1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Linux MegaRAID driver for SAS based RAID controllers
4 *
5 * Copyright (c) 2003-2013 LSI Corporation
6 * Copyright (c) 2013-2016 Avago Technologies
7 * Copyright (c) 2016-2018 Broadcom Inc.
8 *
9 * Authors: Broadcom Inc.
10 * Sreenivas Bagalkote
11 * Sumant Patro
12 * Bo Yang
13 * Adam Radford
14 * Kashyap Desai <kashyap.desai@broadcom.com>
15 * Sumit Saxena <sumit.saxena@broadcom.com>
16 *
17 * Send feedback to: megaraidlinux.pdl@broadcom.com
18 */
19
20 #include <linux/kernel.h>
21 #include <linux/types.h>
22 #include <linux/pci.h>
23 #include <linux/list.h>
24 #include <linux/moduleparam.h>
25 #include <linux/module.h>
26 #include <linux/spinlock.h>
27 #include <linux/interrupt.h>
28 #include <linux/delay.h>
29 #include <linux/uio.h>
30 #include <linux/slab.h>
31 #include <linux/uaccess.h>
32 #include <linux/unaligned.h>
33 #include <linux/fs.h>
34 #include <linux/compat.h>
35 #include <linux/blkdev.h>
36 #include <linux/mutex.h>
37 #include <linux/poll.h>
38 #include <linux/vmalloc.h>
39 #include <linux/irq_poll.h>
40
41 #include <scsi/scsi.h>
42 #include <scsi/scsi_cmnd.h>
43 #include <scsi/scsi_device.h>
44 #include <scsi/scsi_host.h>
45 #include <scsi/scsi_tcq.h>
46 #include <scsi/scsi_dbg.h>
47 #include "megaraid_sas_fusion.h"
48 #include "megaraid_sas.h"
49
50 /*
51 * Number of sectors per IO command
52 * Will be set in megasas_init_mfi if user does not provide
53 */
54 static unsigned int max_sectors;
55 module_param_named(max_sectors, max_sectors, int, 0444);
56 MODULE_PARM_DESC(max_sectors,
57 "Maximum number of sectors per IO command");
58
59 static int msix_disable;
60 module_param(msix_disable, int, 0444);
61 MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0");
62
63 static unsigned int msix_vectors;
64 module_param(msix_vectors, int, 0444);
65 MODULE_PARM_DESC(msix_vectors, "MSI-X max vector count. Default: Set by FW");
66
67 static int allow_vf_ioctls;
68 module_param(allow_vf_ioctls, int, 0444);
69 MODULE_PARM_DESC(allow_vf_ioctls, "Allow ioctls in SR-IOV VF mode. Default: 0");
70
71 static unsigned int throttlequeuedepth = MEGASAS_THROTTLE_QUEUE_DEPTH;
72 module_param(throttlequeuedepth, int, 0444);
73 MODULE_PARM_DESC(throttlequeuedepth,
74 "Adapter queue depth when throttled due to I/O timeout. Default: 16");
75
76 unsigned int resetwaittime = MEGASAS_RESET_WAIT_TIME;
77 module_param(resetwaittime, int, 0444);
78 MODULE_PARM_DESC(resetwaittime, "Wait time in (1-180s) after I/O timeout before resetting adapter. Default: 180s");
79
80 static int smp_affinity_enable = 1;
81 module_param(smp_affinity_enable, int, 0444);
82 MODULE_PARM_DESC(smp_affinity_enable, "SMP affinity feature enable/disable Default: enable(1)");
83
84 static int rdpq_enable = 1;
85 module_param(rdpq_enable, int, 0444);
86 MODULE_PARM_DESC(rdpq_enable, "Allocate reply queue in chunks for large queue depth enable/disable Default: enable(1)");
87
88 unsigned int dual_qdepth_disable;
89 module_param(dual_qdepth_disable, int, 0444);
90 MODULE_PARM_DESC(dual_qdepth_disable, "Disable dual queue depth feature. Default: 0");
91
92 static unsigned int scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
93 module_param(scmd_timeout, int, 0444);
94 MODULE_PARM_DESC(scmd_timeout, "scsi command timeout (10-90s), default 90s. See megasas_reset_timer.");
95
96 static int perf_mode = -1;
97 module_param(perf_mode, int, 0444);
98 MODULE_PARM_DESC(perf_mode, "Performance mode (only for Aero adapters), options:\n\t\t"
99 "0 - balanced: High iops and low latency queues are allocated &\n\t\t"
100 "interrupt coalescing is enabled only on high iops queues\n\t\t"
101 "1 - iops: High iops queues are not allocated &\n\t\t"
102 "interrupt coalescing is enabled on all queues\n\t\t"
103 "2 - latency: High iops queues are not allocated &\n\t\t"
104 "interrupt coalescing is disabled on all queues\n\t\t"
105 "default mode is 'balanced'"
106 );
107
108 static int event_log_level = MFI_EVT_CLASS_CRITICAL;
109 module_param(event_log_level, int, 0644);
110 MODULE_PARM_DESC(event_log_level, "Asynchronous event logging level- range is: -2(CLASS_DEBUG) to 4(CLASS_DEAD), Default: 2(CLASS_CRITICAL)");
111
112 static unsigned int enable_sdev_max_qd;
113 module_param(enable_sdev_max_qd, int, 0444);
114 MODULE_PARM_DESC(enable_sdev_max_qd, "Enable sdev max qd as can_queue. Default: 0");
115
116 static int poll_queues;
117 module_param(poll_queues, int, 0444);
118 MODULE_PARM_DESC(poll_queues, "Number of queues to be use for io_uring poll mode.\n\t\t"
119 "This parameter is effective only if host_tagset_enable=1 &\n\t\t"
120 "It is not applicable for MFI_SERIES. &\n\t\t"
121 "Driver will work in latency mode. &\n\t\t"
122 "High iops queues are not allocated &\n\t\t"
123 );
124
125 static int host_tagset_enable = 1;
126 module_param(host_tagset_enable, int, 0444);
127 MODULE_PARM_DESC(host_tagset_enable, "Shared host tagset enable/disable Default: enable(1)");
128
129 MODULE_LICENSE("GPL");
130 MODULE_VERSION(MEGASAS_VERSION);
131 MODULE_AUTHOR("megaraidlinux.pdl@broadcom.com");
132 MODULE_DESCRIPTION("Broadcom MegaRAID SAS Driver");
133
134 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
135 static int megasas_get_pd_list(struct megasas_instance *instance);
136 static int megasas_ld_list_query(struct megasas_instance *instance,
137 u8 query_type);
138 static int megasas_issue_init_mfi(struct megasas_instance *instance);
139 static int megasas_register_aen(struct megasas_instance *instance,
140 u32 seq_num, u32 class_locale_word);
141 static void megasas_get_pd_info(struct megasas_instance *instance,
142 struct scsi_device *sdev);
143 static void
144 megasas_set_ld_removed_by_fw(struct megasas_instance *instance);
145
146 /*
147 * PCI ID table for all supported controllers
148 */
149 static const struct pci_device_id megasas_pci_table[] = {
150
151 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
152 /* xscale IOP */
153 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
154 /* ppc IOP */
155 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
156 /* ppc IOP */
157 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
158 /* gen2*/
159 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
160 /* gen2*/
161 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
162 /* skinny*/
163 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
164 /* skinny*/
165 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
166 /* xscale IOP, vega */
167 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
168 /* xscale IOP */
169 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)},
170 /* Fusion */
171 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)},
172 /* Plasma */
173 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)},
174 /* Invader */
175 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)},
176 /* Fury */
177 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER)},
178 /* Intruder */
179 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER_24)},
180 /* Intruder 24 port*/
181 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_52)},
182 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_53)},
183 /* VENTURA */
184 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA)},
185 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER)},
186 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_HARPOON)},
187 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_TOMCAT)},
188 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VENTURA_4PORT)},
189 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CRUSADER_4PORT)},
190 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E1)},
191 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E2)},
192 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E5)},
193 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E6)},
194 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E0)},
195 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E3)},
196 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E4)},
197 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_AERO_10E7)},
198 {}
199 };
200
201 MODULE_DEVICE_TABLE(pci, megasas_pci_table);
202
203 static int megasas_mgmt_majorno;
204 struct megasas_mgmt_info megasas_mgmt_info;
205 static struct fasync_struct *megasas_async_queue;
206 static DEFINE_MUTEX(megasas_async_queue_mutex);
207
208 static int megasas_poll_wait_aen;
209 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
210 static u32 support_poll_for_event;
211 u32 megasas_dbg_lvl;
212 static u32 support_device_change;
213 static bool support_nvme_encapsulation;
214 static bool support_pci_lane_margining;
215
216 /* define lock for aen poll */
217 static DEFINE_SPINLOCK(poll_aen_lock);
218
219 extern struct dentry *megasas_debugfs_root;
220 extern int megasas_blk_mq_poll(struct Scsi_Host *shost, unsigned int queue_num);
221
222 void
223 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
224 u8 alt_status);
225 static u32
226 megasas_read_fw_status_reg_gen2(struct megasas_instance *instance);
227 static int
228 megasas_adp_reset_gen2(struct megasas_instance *instance,
229 struct megasas_register_set __iomem *reg_set);
230 static irqreturn_t megasas_isr(int irq, void *devp);
231 static u32
232 megasas_init_adapter_mfi(struct megasas_instance *instance);
233 u32
234 megasas_build_and_issue_cmd(struct megasas_instance *instance,
235 struct scsi_cmnd *scmd);
236 static void megasas_complete_cmd_dpc(unsigned long instance_addr);
237 int
238 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
239 int seconds);
240 void megasas_fusion_ocr_wq(struct work_struct *work);
241 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
242 int initial);
243 static int
244 megasas_set_dma_mask(struct megasas_instance *instance);
245 static int
246 megasas_alloc_ctrl_mem(struct megasas_instance *instance);
247 static inline void
248 megasas_free_ctrl_mem(struct megasas_instance *instance);
249 static inline int
250 megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance);
251 static inline void
252 megasas_free_ctrl_dma_buffers(struct megasas_instance *instance);
253 static inline void
254 megasas_init_ctrl_params(struct megasas_instance *instance);
255
megasas_readl(struct megasas_instance * instance,const volatile void __iomem * addr)256 u32 megasas_readl(struct megasas_instance *instance,
257 const volatile void __iomem *addr)
258 {
259 u32 i = 0, ret_val;
260 /*
261 * Due to a HW errata in Aero controllers, reads to certain
262 * Fusion registers could intermittently return all zeroes.
263 * This behavior is transient in nature and subsequent reads will
264 * return valid value. As a workaround in driver, retry readl for
265 * up to thirty times until a non-zero value is read.
266 */
267 if (instance->adapter_type == AERO_SERIES) {
268 do {
269 ret_val = readl(addr);
270 i++;
271 } while (ret_val == 0 && i < 30);
272 return ret_val;
273 } else {
274 return readl(addr);
275 }
276 }
277
278 /**
279 * megasas_set_dma_settings - Populate DMA address, length and flags for DCMDs
280 * @instance: Adapter soft state
281 * @dcmd: DCMD frame inside MFI command
282 * @dma_addr: DMA address of buffer to be passed to FW
283 * @dma_len: Length of DMA buffer to be passed to FW
284 * @return: void
285 */
megasas_set_dma_settings(struct megasas_instance * instance,struct megasas_dcmd_frame * dcmd,dma_addr_t dma_addr,u32 dma_len)286 void megasas_set_dma_settings(struct megasas_instance *instance,
287 struct megasas_dcmd_frame *dcmd,
288 dma_addr_t dma_addr, u32 dma_len)
289 {
290 if (instance->consistent_mask_64bit) {
291 dcmd->sgl.sge64[0].phys_addr = cpu_to_le64(dma_addr);
292 dcmd->sgl.sge64[0].length = cpu_to_le32(dma_len);
293 dcmd->flags = cpu_to_le16(dcmd->flags | MFI_FRAME_SGL64);
294
295 } else {
296 dcmd->sgl.sge32[0].phys_addr =
297 cpu_to_le32(lower_32_bits(dma_addr));
298 dcmd->sgl.sge32[0].length = cpu_to_le32(dma_len);
299 dcmd->flags = cpu_to_le16(dcmd->flags);
300 }
301 }
302
303 static void
megasas_issue_dcmd(struct megasas_instance * instance,struct megasas_cmd * cmd)304 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
305 {
306 instance->instancet->fire_cmd(instance,
307 cmd->frame_phys_addr, 0, instance->reg_set);
308 return;
309 }
310
311 /**
312 * megasas_get_cmd - Get a command from the free pool
313 * @instance: Adapter soft state
314 *
315 * Returns a free command from the pool
316 */
megasas_get_cmd(struct megasas_instance * instance)317 struct megasas_cmd *megasas_get_cmd(struct megasas_instance
318 *instance)
319 {
320 unsigned long flags;
321 struct megasas_cmd *cmd = NULL;
322
323 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
324
325 if (!list_empty(&instance->cmd_pool)) {
326 cmd = list_entry((&instance->cmd_pool)->next,
327 struct megasas_cmd, list);
328 list_del_init(&cmd->list);
329 } else {
330 dev_err(&instance->pdev->dev, "Command pool empty!\n");
331 }
332
333 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
334 return cmd;
335 }
336
337 /**
338 * megasas_return_cmd - Return a cmd to free command pool
339 * @instance: Adapter soft state
340 * @cmd: Command packet to be returned to free command pool
341 */
342 void
megasas_return_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd)343 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
344 {
345 unsigned long flags;
346 u32 blk_tags;
347 struct megasas_cmd_fusion *cmd_fusion;
348 struct fusion_context *fusion = instance->ctrl_context;
349
350 /* This flag is used only for fusion adapter.
351 * Wait for Interrupt for Polled mode DCMD
352 */
353 if (cmd->flags & DRV_DCMD_POLLED_MODE)
354 return;
355
356 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
357
358 if (fusion) {
359 blk_tags = instance->max_scsi_cmds + cmd->index;
360 cmd_fusion = fusion->cmd_list[blk_tags];
361 megasas_return_cmd_fusion(instance, cmd_fusion);
362 }
363 cmd->scmd = NULL;
364 cmd->frame_count = 0;
365 cmd->flags = 0;
366 memset(cmd->frame, 0, instance->mfi_frame_size);
367 cmd->frame->io.context = cpu_to_le32(cmd->index);
368 if (!fusion && reset_devices)
369 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
370 list_add(&cmd->list, (&instance->cmd_pool)->next);
371
372 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
373
374 }
375
376 static const char *
format_timestamp(uint32_t timestamp)377 format_timestamp(uint32_t timestamp)
378 {
379 static char buffer[32];
380
381 if ((timestamp & 0xff000000) == 0xff000000)
382 snprintf(buffer, sizeof(buffer), "boot + %us", timestamp &
383 0x00ffffff);
384 else
385 snprintf(buffer, sizeof(buffer), "%us", timestamp);
386 return buffer;
387 }
388
389 static const char *
format_class(int8_t class)390 format_class(int8_t class)
391 {
392 static char buffer[6];
393
394 switch (class) {
395 case MFI_EVT_CLASS_DEBUG:
396 return "debug";
397 case MFI_EVT_CLASS_PROGRESS:
398 return "progress";
399 case MFI_EVT_CLASS_INFO:
400 return "info";
401 case MFI_EVT_CLASS_WARNING:
402 return "WARN";
403 case MFI_EVT_CLASS_CRITICAL:
404 return "CRIT";
405 case MFI_EVT_CLASS_FATAL:
406 return "FATAL";
407 case MFI_EVT_CLASS_DEAD:
408 return "DEAD";
409 default:
410 snprintf(buffer, sizeof(buffer), "%d", class);
411 return buffer;
412 }
413 }
414
415 /**
416 * megasas_decode_evt: Decode FW AEN event and print critical event
417 * for information.
418 * @instance: Adapter soft state
419 */
420 static void
megasas_decode_evt(struct megasas_instance * instance)421 megasas_decode_evt(struct megasas_instance *instance)
422 {
423 struct megasas_evt_detail *evt_detail = instance->evt_detail;
424 union megasas_evt_class_locale class_locale;
425 class_locale.word = le32_to_cpu(evt_detail->cl.word);
426
427 if ((event_log_level < MFI_EVT_CLASS_DEBUG) ||
428 (event_log_level > MFI_EVT_CLASS_DEAD)) {
429 printk(KERN_WARNING "megaraid_sas: provided event log level is out of range, setting it to default 2(CLASS_CRITICAL), permissible range is: -2 to 4\n");
430 event_log_level = MFI_EVT_CLASS_CRITICAL;
431 }
432
433 if (class_locale.members.class >= event_log_level)
434 dev_info(&instance->pdev->dev, "%d (%s/0x%04x/%s) - %s\n",
435 le32_to_cpu(evt_detail->seq_num),
436 format_timestamp(le32_to_cpu(evt_detail->time_stamp)),
437 (class_locale.members.locale),
438 format_class(class_locale.members.class),
439 evt_detail->description);
440
441 if (megasas_dbg_lvl & LD_PD_DEBUG)
442 dev_info(&instance->pdev->dev,
443 "evt_detail.args.ld.target_id/index %d/%d\n",
444 evt_detail->args.ld.target_id, evt_detail->args.ld.ld_index);
445
446 }
447
448 /*
449 * The following functions are defined for xscale
450 * (deviceid : 1064R, PERC5) controllers
451 */
452
453 /**
454 * megasas_enable_intr_xscale - Enables interrupts
455 * @instance: Adapter soft state
456 */
457 static inline void
megasas_enable_intr_xscale(struct megasas_instance * instance)458 megasas_enable_intr_xscale(struct megasas_instance *instance)
459 {
460 struct megasas_register_set __iomem *regs;
461
462 regs = instance->reg_set;
463 writel(0, &(regs)->outbound_intr_mask);
464
465 /* Dummy readl to force pci flush */
466 readl(®s->outbound_intr_mask);
467 }
468
469 /**
470 * megasas_disable_intr_xscale -Disables interrupt
471 * @instance: Adapter soft state
472 */
473 static inline void
megasas_disable_intr_xscale(struct megasas_instance * instance)474 megasas_disable_intr_xscale(struct megasas_instance *instance)
475 {
476 struct megasas_register_set __iomem *regs;
477 u32 mask = 0x1f;
478
479 regs = instance->reg_set;
480 writel(mask, ®s->outbound_intr_mask);
481 /* Dummy readl to force pci flush */
482 readl(®s->outbound_intr_mask);
483 }
484
485 /**
486 * megasas_read_fw_status_reg_xscale - returns the current FW status value
487 * @instance: Adapter soft state
488 */
489 static u32
megasas_read_fw_status_reg_xscale(struct megasas_instance * instance)490 megasas_read_fw_status_reg_xscale(struct megasas_instance *instance)
491 {
492 return readl(&instance->reg_set->outbound_msg_0);
493 }
494 /**
495 * megasas_clear_intr_xscale - Check & clear interrupt
496 * @instance: Adapter soft state
497 */
498 static int
megasas_clear_intr_xscale(struct megasas_instance * instance)499 megasas_clear_intr_xscale(struct megasas_instance *instance)
500 {
501 u32 status;
502 u32 mfiStatus = 0;
503 struct megasas_register_set __iomem *regs;
504 regs = instance->reg_set;
505
506 /*
507 * Check if it is our interrupt
508 */
509 status = readl(®s->outbound_intr_status);
510
511 if (status & MFI_OB_INTR_STATUS_MASK)
512 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
513 if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
514 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
515
516 /*
517 * Clear the interrupt by writing back the same value
518 */
519 if (mfiStatus)
520 writel(status, ®s->outbound_intr_status);
521
522 /* Dummy readl to force pci flush */
523 readl(®s->outbound_intr_status);
524
525 return mfiStatus;
526 }
527
528 /**
529 * megasas_fire_cmd_xscale - Sends command to the FW
530 * @instance: Adapter soft state
531 * @frame_phys_addr : Physical address of cmd
532 * @frame_count : Number of frames for the command
533 * @regs : MFI register set
534 */
535 static inline void
megasas_fire_cmd_xscale(struct megasas_instance * instance,dma_addr_t frame_phys_addr,u32 frame_count,struct megasas_register_set __iomem * regs)536 megasas_fire_cmd_xscale(struct megasas_instance *instance,
537 dma_addr_t frame_phys_addr,
538 u32 frame_count,
539 struct megasas_register_set __iomem *regs)
540 {
541 unsigned long flags;
542
543 spin_lock_irqsave(&instance->hba_lock, flags);
544 writel((frame_phys_addr >> 3)|(frame_count),
545 &(regs)->inbound_queue_port);
546 spin_unlock_irqrestore(&instance->hba_lock, flags);
547 }
548
549 /**
550 * megasas_adp_reset_xscale - For controller reset
551 * @instance: Adapter soft state
552 * @regs: MFI register set
553 */
554 static int
megasas_adp_reset_xscale(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)555 megasas_adp_reset_xscale(struct megasas_instance *instance,
556 struct megasas_register_set __iomem *regs)
557 {
558 u32 i;
559 u32 pcidata;
560
561 writel(MFI_ADP_RESET, ®s->inbound_doorbell);
562
563 for (i = 0; i < 3; i++)
564 msleep(1000); /* sleep for 3 secs */
565 pcidata = 0;
566 pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
567 dev_notice(&instance->pdev->dev, "pcidata = %x\n", pcidata);
568 if (pcidata & 0x2) {
569 dev_notice(&instance->pdev->dev, "mfi 1068 offset read=%x\n", pcidata);
570 pcidata &= ~0x2;
571 pci_write_config_dword(instance->pdev,
572 MFI_1068_PCSR_OFFSET, pcidata);
573
574 for (i = 0; i < 2; i++)
575 msleep(1000); /* need to wait 2 secs again */
576
577 pcidata = 0;
578 pci_read_config_dword(instance->pdev,
579 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
580 dev_notice(&instance->pdev->dev, "1068 offset handshake read=%x\n", pcidata);
581 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
582 dev_notice(&instance->pdev->dev, "1068 offset pcidt=%x\n", pcidata);
583 pcidata = 0;
584 pci_write_config_dword(instance->pdev,
585 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
586 }
587 }
588 return 0;
589 }
590
591 /**
592 * megasas_check_reset_xscale - For controller reset check
593 * @instance: Adapter soft state
594 * @regs: MFI register set
595 */
596 static int
megasas_check_reset_xscale(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)597 megasas_check_reset_xscale(struct megasas_instance *instance,
598 struct megasas_register_set __iomem *regs)
599 {
600 if ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) &&
601 (le32_to_cpu(*instance->consumer) ==
602 MEGASAS_ADPRESET_INPROG_SIGN))
603 return 1;
604 return 0;
605 }
606
607 static struct megasas_instance_template megasas_instance_template_xscale = {
608
609 .fire_cmd = megasas_fire_cmd_xscale,
610 .enable_intr = megasas_enable_intr_xscale,
611 .disable_intr = megasas_disable_intr_xscale,
612 .clear_intr = megasas_clear_intr_xscale,
613 .read_fw_status_reg = megasas_read_fw_status_reg_xscale,
614 .adp_reset = megasas_adp_reset_xscale,
615 .check_reset = megasas_check_reset_xscale,
616 .service_isr = megasas_isr,
617 .tasklet = megasas_complete_cmd_dpc,
618 .init_adapter = megasas_init_adapter_mfi,
619 .build_and_issue_cmd = megasas_build_and_issue_cmd,
620 .issue_dcmd = megasas_issue_dcmd,
621 };
622
623 /*
624 * This is the end of set of functions & definitions specific
625 * to xscale (deviceid : 1064R, PERC5) controllers
626 */
627
628 /*
629 * The following functions are defined for ppc (deviceid : 0x60)
630 * controllers
631 */
632
633 /**
634 * megasas_enable_intr_ppc - Enables interrupts
635 * @instance: Adapter soft state
636 */
637 static inline void
megasas_enable_intr_ppc(struct megasas_instance * instance)638 megasas_enable_intr_ppc(struct megasas_instance *instance)
639 {
640 struct megasas_register_set __iomem *regs;
641
642 regs = instance->reg_set;
643 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
644
645 writel(~0x80000000, &(regs)->outbound_intr_mask);
646
647 /* Dummy readl to force pci flush */
648 readl(®s->outbound_intr_mask);
649 }
650
651 /**
652 * megasas_disable_intr_ppc - Disable interrupt
653 * @instance: Adapter soft state
654 */
655 static inline void
megasas_disable_intr_ppc(struct megasas_instance * instance)656 megasas_disable_intr_ppc(struct megasas_instance *instance)
657 {
658 struct megasas_register_set __iomem *regs;
659 u32 mask = 0xFFFFFFFF;
660
661 regs = instance->reg_set;
662 writel(mask, ®s->outbound_intr_mask);
663 /* Dummy readl to force pci flush */
664 readl(®s->outbound_intr_mask);
665 }
666
667 /**
668 * megasas_read_fw_status_reg_ppc - returns the current FW status value
669 * @instance: Adapter soft state
670 */
671 static u32
megasas_read_fw_status_reg_ppc(struct megasas_instance * instance)672 megasas_read_fw_status_reg_ppc(struct megasas_instance *instance)
673 {
674 return readl(&instance->reg_set->outbound_scratch_pad_0);
675 }
676
677 /**
678 * megasas_clear_intr_ppc - Check & clear interrupt
679 * @instance: Adapter soft state
680 */
681 static int
megasas_clear_intr_ppc(struct megasas_instance * instance)682 megasas_clear_intr_ppc(struct megasas_instance *instance)
683 {
684 u32 status, mfiStatus = 0;
685 struct megasas_register_set __iomem *regs;
686 regs = instance->reg_set;
687
688 /*
689 * Check if it is our interrupt
690 */
691 status = readl(®s->outbound_intr_status);
692
693 if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT)
694 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
695
696 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT)
697 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
698
699 /*
700 * Clear the interrupt by writing back the same value
701 */
702 writel(status, ®s->outbound_doorbell_clear);
703
704 /* Dummy readl to force pci flush */
705 readl(®s->outbound_doorbell_clear);
706
707 return mfiStatus;
708 }
709
710 /**
711 * megasas_fire_cmd_ppc - Sends command to the FW
712 * @instance: Adapter soft state
713 * @frame_phys_addr: Physical address of cmd
714 * @frame_count: Number of frames for the command
715 * @regs: MFI register set
716 */
717 static inline void
megasas_fire_cmd_ppc(struct megasas_instance * instance,dma_addr_t frame_phys_addr,u32 frame_count,struct megasas_register_set __iomem * regs)718 megasas_fire_cmd_ppc(struct megasas_instance *instance,
719 dma_addr_t frame_phys_addr,
720 u32 frame_count,
721 struct megasas_register_set __iomem *regs)
722 {
723 unsigned long flags;
724
725 spin_lock_irqsave(&instance->hba_lock, flags);
726 writel((frame_phys_addr | (frame_count<<1))|1,
727 &(regs)->inbound_queue_port);
728 spin_unlock_irqrestore(&instance->hba_lock, flags);
729 }
730
731 /**
732 * megasas_check_reset_ppc - For controller reset check
733 * @instance: Adapter soft state
734 * @regs: MFI register set
735 */
736 static int
megasas_check_reset_ppc(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)737 megasas_check_reset_ppc(struct megasas_instance *instance,
738 struct megasas_register_set __iomem *regs)
739 {
740 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
741 return 1;
742
743 return 0;
744 }
745
746 static struct megasas_instance_template megasas_instance_template_ppc = {
747
748 .fire_cmd = megasas_fire_cmd_ppc,
749 .enable_intr = megasas_enable_intr_ppc,
750 .disable_intr = megasas_disable_intr_ppc,
751 .clear_intr = megasas_clear_intr_ppc,
752 .read_fw_status_reg = megasas_read_fw_status_reg_ppc,
753 .adp_reset = megasas_adp_reset_xscale,
754 .check_reset = megasas_check_reset_ppc,
755 .service_isr = megasas_isr,
756 .tasklet = megasas_complete_cmd_dpc,
757 .init_adapter = megasas_init_adapter_mfi,
758 .build_and_issue_cmd = megasas_build_and_issue_cmd,
759 .issue_dcmd = megasas_issue_dcmd,
760 };
761
762 /**
763 * megasas_enable_intr_skinny - Enables interrupts
764 * @instance: Adapter soft state
765 */
766 static inline void
megasas_enable_intr_skinny(struct megasas_instance * instance)767 megasas_enable_intr_skinny(struct megasas_instance *instance)
768 {
769 struct megasas_register_set __iomem *regs;
770
771 regs = instance->reg_set;
772 writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
773
774 writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
775
776 /* Dummy readl to force pci flush */
777 readl(®s->outbound_intr_mask);
778 }
779
780 /**
781 * megasas_disable_intr_skinny - Disables interrupt
782 * @instance: Adapter soft state
783 */
784 static inline void
megasas_disable_intr_skinny(struct megasas_instance * instance)785 megasas_disable_intr_skinny(struct megasas_instance *instance)
786 {
787 struct megasas_register_set __iomem *regs;
788 u32 mask = 0xFFFFFFFF;
789
790 regs = instance->reg_set;
791 writel(mask, ®s->outbound_intr_mask);
792 /* Dummy readl to force pci flush */
793 readl(®s->outbound_intr_mask);
794 }
795
796 /**
797 * megasas_read_fw_status_reg_skinny - returns the current FW status value
798 * @instance: Adapter soft state
799 */
800 static u32
megasas_read_fw_status_reg_skinny(struct megasas_instance * instance)801 megasas_read_fw_status_reg_skinny(struct megasas_instance *instance)
802 {
803 return readl(&instance->reg_set->outbound_scratch_pad_0);
804 }
805
806 /**
807 * megasas_clear_intr_skinny - Check & clear interrupt
808 * @instance: Adapter soft state
809 */
810 static int
megasas_clear_intr_skinny(struct megasas_instance * instance)811 megasas_clear_intr_skinny(struct megasas_instance *instance)
812 {
813 u32 status;
814 u32 mfiStatus = 0;
815 struct megasas_register_set __iomem *regs;
816 regs = instance->reg_set;
817
818 /*
819 * Check if it is our interrupt
820 */
821 status = readl(®s->outbound_intr_status);
822
823 if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
824 return 0;
825 }
826
827 /*
828 * Check if it is our interrupt
829 */
830 if ((megasas_read_fw_status_reg_skinny(instance) & MFI_STATE_MASK) ==
831 MFI_STATE_FAULT) {
832 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
833 } else
834 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
835
836 /*
837 * Clear the interrupt by writing back the same value
838 */
839 writel(status, ®s->outbound_intr_status);
840
841 /*
842 * dummy read to flush PCI
843 */
844 readl(®s->outbound_intr_status);
845
846 return mfiStatus;
847 }
848
849 /**
850 * megasas_fire_cmd_skinny - Sends command to the FW
851 * @instance: Adapter soft state
852 * @frame_phys_addr: Physical address of cmd
853 * @frame_count: Number of frames for the command
854 * @regs: MFI register set
855 */
856 static inline void
megasas_fire_cmd_skinny(struct megasas_instance * instance,dma_addr_t frame_phys_addr,u32 frame_count,struct megasas_register_set __iomem * regs)857 megasas_fire_cmd_skinny(struct megasas_instance *instance,
858 dma_addr_t frame_phys_addr,
859 u32 frame_count,
860 struct megasas_register_set __iomem *regs)
861 {
862 unsigned long flags;
863
864 spin_lock_irqsave(&instance->hba_lock, flags);
865 writel(upper_32_bits(frame_phys_addr),
866 &(regs)->inbound_high_queue_port);
867 writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1,
868 &(regs)->inbound_low_queue_port);
869 spin_unlock_irqrestore(&instance->hba_lock, flags);
870 }
871
872 /**
873 * megasas_check_reset_skinny - For controller reset check
874 * @instance: Adapter soft state
875 * @regs: MFI register set
876 */
877 static int
megasas_check_reset_skinny(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)878 megasas_check_reset_skinny(struct megasas_instance *instance,
879 struct megasas_register_set __iomem *regs)
880 {
881 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
882 return 1;
883
884 return 0;
885 }
886
887 static struct megasas_instance_template megasas_instance_template_skinny = {
888
889 .fire_cmd = megasas_fire_cmd_skinny,
890 .enable_intr = megasas_enable_intr_skinny,
891 .disable_intr = megasas_disable_intr_skinny,
892 .clear_intr = megasas_clear_intr_skinny,
893 .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
894 .adp_reset = megasas_adp_reset_gen2,
895 .check_reset = megasas_check_reset_skinny,
896 .service_isr = megasas_isr,
897 .tasklet = megasas_complete_cmd_dpc,
898 .init_adapter = megasas_init_adapter_mfi,
899 .build_and_issue_cmd = megasas_build_and_issue_cmd,
900 .issue_dcmd = megasas_issue_dcmd,
901 };
902
903
904 /*
905 * The following functions are defined for gen2 (deviceid : 0x78 0x79)
906 * controllers
907 */
908
909 /**
910 * megasas_enable_intr_gen2 - Enables interrupts
911 * @instance: Adapter soft state
912 */
913 static inline void
megasas_enable_intr_gen2(struct megasas_instance * instance)914 megasas_enable_intr_gen2(struct megasas_instance *instance)
915 {
916 struct megasas_register_set __iomem *regs;
917
918 regs = instance->reg_set;
919 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
920
921 /* write ~0x00000005 (4 & 1) to the intr mask*/
922 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
923
924 /* Dummy readl to force pci flush */
925 readl(®s->outbound_intr_mask);
926 }
927
928 /**
929 * megasas_disable_intr_gen2 - Disables interrupt
930 * @instance: Adapter soft state
931 */
932 static inline void
megasas_disable_intr_gen2(struct megasas_instance * instance)933 megasas_disable_intr_gen2(struct megasas_instance *instance)
934 {
935 struct megasas_register_set __iomem *regs;
936 u32 mask = 0xFFFFFFFF;
937
938 regs = instance->reg_set;
939 writel(mask, ®s->outbound_intr_mask);
940 /* Dummy readl to force pci flush */
941 readl(®s->outbound_intr_mask);
942 }
943
944 /**
945 * megasas_read_fw_status_reg_gen2 - returns the current FW status value
946 * @instance: Adapter soft state
947 */
948 static u32
megasas_read_fw_status_reg_gen2(struct megasas_instance * instance)949 megasas_read_fw_status_reg_gen2(struct megasas_instance *instance)
950 {
951 return readl(&instance->reg_set->outbound_scratch_pad_0);
952 }
953
954 /**
955 * megasas_clear_intr_gen2 - Check & clear interrupt
956 * @instance: Adapter soft state
957 */
958 static int
megasas_clear_intr_gen2(struct megasas_instance * instance)959 megasas_clear_intr_gen2(struct megasas_instance *instance)
960 {
961 u32 status;
962 u32 mfiStatus = 0;
963 struct megasas_register_set __iomem *regs;
964 regs = instance->reg_set;
965
966 /*
967 * Check if it is our interrupt
968 */
969 status = readl(®s->outbound_intr_status);
970
971 if (status & MFI_INTR_FLAG_REPLY_MESSAGE) {
972 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
973 }
974 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
975 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
976 }
977
978 /*
979 * Clear the interrupt by writing back the same value
980 */
981 if (mfiStatus)
982 writel(status, ®s->outbound_doorbell_clear);
983
984 /* Dummy readl to force pci flush */
985 readl(®s->outbound_intr_status);
986
987 return mfiStatus;
988 }
989
990 /**
991 * megasas_fire_cmd_gen2 - Sends command to the FW
992 * @instance: Adapter soft state
993 * @frame_phys_addr: Physical address of cmd
994 * @frame_count: Number of frames for the command
995 * @regs: MFI register set
996 */
997 static inline void
megasas_fire_cmd_gen2(struct megasas_instance * instance,dma_addr_t frame_phys_addr,u32 frame_count,struct megasas_register_set __iomem * regs)998 megasas_fire_cmd_gen2(struct megasas_instance *instance,
999 dma_addr_t frame_phys_addr,
1000 u32 frame_count,
1001 struct megasas_register_set __iomem *regs)
1002 {
1003 unsigned long flags;
1004
1005 spin_lock_irqsave(&instance->hba_lock, flags);
1006 writel((frame_phys_addr | (frame_count<<1))|1,
1007 &(regs)->inbound_queue_port);
1008 spin_unlock_irqrestore(&instance->hba_lock, flags);
1009 }
1010
1011 /**
1012 * megasas_adp_reset_gen2 - For controller reset
1013 * @instance: Adapter soft state
1014 * @reg_set: MFI register set
1015 */
1016 static int
megasas_adp_reset_gen2(struct megasas_instance * instance,struct megasas_register_set __iomem * reg_set)1017 megasas_adp_reset_gen2(struct megasas_instance *instance,
1018 struct megasas_register_set __iomem *reg_set)
1019 {
1020 u32 retry = 0 ;
1021 u32 HostDiag;
1022 u32 __iomem *seq_offset = ®_set->seq_offset;
1023 u32 __iomem *hostdiag_offset = ®_set->host_diag;
1024
1025 if (instance->instancet == &megasas_instance_template_skinny) {
1026 seq_offset = ®_set->fusion_seq_offset;
1027 hostdiag_offset = ®_set->fusion_host_diag;
1028 }
1029
1030 writel(0, seq_offset);
1031 writel(4, seq_offset);
1032 writel(0xb, seq_offset);
1033 writel(2, seq_offset);
1034 writel(7, seq_offset);
1035 writel(0xd, seq_offset);
1036
1037 msleep(1000);
1038
1039 HostDiag = (u32)readl(hostdiag_offset);
1040
1041 while (!(HostDiag & DIAG_WRITE_ENABLE)) {
1042 msleep(100);
1043 HostDiag = (u32)readl(hostdiag_offset);
1044 dev_notice(&instance->pdev->dev, "RESETGEN2: retry=%x, hostdiag=%x\n",
1045 retry, HostDiag);
1046
1047 if (retry++ >= 100)
1048 return 1;
1049
1050 }
1051
1052 dev_notice(&instance->pdev->dev, "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
1053
1054 writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset);
1055
1056 ssleep(10);
1057
1058 HostDiag = (u32)readl(hostdiag_offset);
1059 while (HostDiag & DIAG_RESET_ADAPTER) {
1060 msleep(100);
1061 HostDiag = (u32)readl(hostdiag_offset);
1062 dev_notice(&instance->pdev->dev, "RESET_GEN2: retry=%x, hostdiag=%x\n",
1063 retry, HostDiag);
1064
1065 if (retry++ >= 1000)
1066 return 1;
1067
1068 }
1069 return 0;
1070 }
1071
1072 /**
1073 * megasas_check_reset_gen2 - For controller reset check
1074 * @instance: Adapter soft state
1075 * @regs: MFI register set
1076 */
1077 static int
megasas_check_reset_gen2(struct megasas_instance * instance,struct megasas_register_set __iomem * regs)1078 megasas_check_reset_gen2(struct megasas_instance *instance,
1079 struct megasas_register_set __iomem *regs)
1080 {
1081 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
1082 return 1;
1083
1084 return 0;
1085 }
1086
1087 static struct megasas_instance_template megasas_instance_template_gen2 = {
1088
1089 .fire_cmd = megasas_fire_cmd_gen2,
1090 .enable_intr = megasas_enable_intr_gen2,
1091 .disable_intr = megasas_disable_intr_gen2,
1092 .clear_intr = megasas_clear_intr_gen2,
1093 .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
1094 .adp_reset = megasas_adp_reset_gen2,
1095 .check_reset = megasas_check_reset_gen2,
1096 .service_isr = megasas_isr,
1097 .tasklet = megasas_complete_cmd_dpc,
1098 .init_adapter = megasas_init_adapter_mfi,
1099 .build_and_issue_cmd = megasas_build_and_issue_cmd,
1100 .issue_dcmd = megasas_issue_dcmd,
1101 };
1102
1103 /*
1104 * This is the end of set of functions & definitions
1105 * specific to gen2 (deviceid : 0x78, 0x79) controllers
1106 */
1107
1108 /*
1109 * Template added for TB (Fusion)
1110 */
1111 extern struct megasas_instance_template megasas_instance_template_fusion;
1112
1113 /**
1114 * megasas_issue_polled - Issues a polling command
1115 * @instance: Adapter soft state
1116 * @cmd: Command packet to be issued
1117 *
1118 * For polling, MFI requires the cmd_status to be set to MFI_STAT_INVALID_STATUS before posting.
1119 */
1120 int
megasas_issue_polled(struct megasas_instance * instance,struct megasas_cmd * cmd)1121 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
1122 {
1123 struct megasas_header *frame_hdr = &cmd->frame->hdr;
1124
1125 frame_hdr->cmd_status = MFI_STAT_INVALID_STATUS;
1126 frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
1127
1128 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1129 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1130 __func__, __LINE__);
1131 return DCMD_INIT;
1132 }
1133
1134 instance->instancet->issue_dcmd(instance, cmd);
1135
1136 return wait_and_poll(instance, cmd, instance->requestorId ?
1137 MEGASAS_ROUTINE_WAIT_TIME_VF : MFI_IO_TIMEOUT_SECS);
1138 }
1139
1140 /**
1141 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds
1142 * @instance: Adapter soft state
1143 * @cmd: Command to be issued
1144 * @timeout: Timeout in seconds
1145 *
1146 * This function waits on an event for the command to be returned from ISR.
1147 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1148 * Used to issue ioctl commands.
1149 */
1150 int
megasas_issue_blocked_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd,int timeout)1151 megasas_issue_blocked_cmd(struct megasas_instance *instance,
1152 struct megasas_cmd *cmd, int timeout)
1153 {
1154 int ret = 0;
1155 cmd->cmd_status_drv = DCMD_INIT;
1156
1157 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1158 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1159 __func__, __LINE__);
1160 return DCMD_INIT;
1161 }
1162
1163 instance->instancet->issue_dcmd(instance, cmd);
1164
1165 if (timeout) {
1166 ret = wait_event_timeout(instance->int_cmd_wait_q,
1167 cmd->cmd_status_drv != DCMD_INIT, timeout * HZ);
1168 if (!ret) {
1169 dev_err(&instance->pdev->dev,
1170 "DCMD(opcode: 0x%x) is timed out, func:%s\n",
1171 cmd->frame->dcmd.opcode, __func__);
1172 return DCMD_TIMEOUT;
1173 }
1174 } else
1175 wait_event(instance->int_cmd_wait_q,
1176 cmd->cmd_status_drv != DCMD_INIT);
1177
1178 return cmd->cmd_status_drv;
1179 }
1180
1181 /**
1182 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd
1183 * @instance: Adapter soft state
1184 * @cmd_to_abort: Previously issued cmd to be aborted
1185 * @timeout: Timeout in seconds
1186 *
1187 * MFI firmware can abort previously issued AEN comamnd (automatic event
1188 * notification). The megasas_issue_blocked_abort_cmd() issues such abort
1189 * cmd and waits for return status.
1190 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1191 */
1192 static int
megasas_issue_blocked_abort_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd_to_abort,int timeout)1193 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
1194 struct megasas_cmd *cmd_to_abort, int timeout)
1195 {
1196 struct megasas_cmd *cmd;
1197 struct megasas_abort_frame *abort_fr;
1198 int ret = 0;
1199 u32 opcode;
1200
1201 cmd = megasas_get_cmd(instance);
1202
1203 if (!cmd)
1204 return -1;
1205
1206 abort_fr = &cmd->frame->abort;
1207
1208 /*
1209 * Prepare and issue the abort frame
1210 */
1211 abort_fr->cmd = MFI_CMD_ABORT;
1212 abort_fr->cmd_status = MFI_STAT_INVALID_STATUS;
1213 abort_fr->flags = cpu_to_le16(0);
1214 abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index);
1215 abort_fr->abort_mfi_phys_addr_lo =
1216 cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr));
1217 abort_fr->abort_mfi_phys_addr_hi =
1218 cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr));
1219
1220 cmd->sync_cmd = 1;
1221 cmd->cmd_status_drv = DCMD_INIT;
1222
1223 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1224 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1225 __func__, __LINE__);
1226 return DCMD_INIT;
1227 }
1228
1229 instance->instancet->issue_dcmd(instance, cmd);
1230
1231 if (timeout) {
1232 ret = wait_event_timeout(instance->abort_cmd_wait_q,
1233 cmd->cmd_status_drv != DCMD_INIT, timeout * HZ);
1234 if (!ret) {
1235 opcode = cmd_to_abort->frame->dcmd.opcode;
1236 dev_err(&instance->pdev->dev,
1237 "Abort(to be aborted DCMD opcode: 0x%x) is timed out func:%s\n",
1238 opcode, __func__);
1239 return DCMD_TIMEOUT;
1240 }
1241 } else
1242 wait_event(instance->abort_cmd_wait_q,
1243 cmd->cmd_status_drv != DCMD_INIT);
1244
1245 cmd->sync_cmd = 0;
1246
1247 megasas_return_cmd(instance, cmd);
1248 return cmd->cmd_status_drv;
1249 }
1250
1251 /**
1252 * megasas_make_sgl32 - Prepares 32-bit SGL
1253 * @instance: Adapter soft state
1254 * @scp: SCSI command from the mid-layer
1255 * @mfi_sgl: SGL to be filled in
1256 *
1257 * If successful, this function returns the number of SG elements. Otherwise,
1258 * it returnes -1.
1259 */
1260 static int
megasas_make_sgl32(struct megasas_instance * instance,struct scsi_cmnd * scp,union megasas_sgl * mfi_sgl)1261 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
1262 union megasas_sgl *mfi_sgl)
1263 {
1264 int i;
1265 int sge_count;
1266 struct scatterlist *os_sgl;
1267
1268 sge_count = scsi_dma_map(scp);
1269 BUG_ON(sge_count < 0);
1270
1271 if (sge_count) {
1272 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1273 mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1274 mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl));
1275 }
1276 }
1277 return sge_count;
1278 }
1279
1280 /**
1281 * megasas_make_sgl64 - Prepares 64-bit SGL
1282 * @instance: Adapter soft state
1283 * @scp: SCSI command from the mid-layer
1284 * @mfi_sgl: SGL to be filled in
1285 *
1286 * If successful, this function returns the number of SG elements. Otherwise,
1287 * it returnes -1.
1288 */
1289 static int
megasas_make_sgl64(struct megasas_instance * instance,struct scsi_cmnd * scp,union megasas_sgl * mfi_sgl)1290 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
1291 union megasas_sgl *mfi_sgl)
1292 {
1293 int i;
1294 int sge_count;
1295 struct scatterlist *os_sgl;
1296
1297 sge_count = scsi_dma_map(scp);
1298 BUG_ON(sge_count < 0);
1299
1300 if (sge_count) {
1301 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1302 mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1303 mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl));
1304 }
1305 }
1306 return sge_count;
1307 }
1308
1309 /**
1310 * megasas_make_sgl_skinny - Prepares IEEE SGL
1311 * @instance: Adapter soft state
1312 * @scp: SCSI command from the mid-layer
1313 * @mfi_sgl: SGL to be filled in
1314 *
1315 * If successful, this function returns the number of SG elements. Otherwise,
1316 * it returnes -1.
1317 */
1318 static int
megasas_make_sgl_skinny(struct megasas_instance * instance,struct scsi_cmnd * scp,union megasas_sgl * mfi_sgl)1319 megasas_make_sgl_skinny(struct megasas_instance *instance,
1320 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
1321 {
1322 int i;
1323 int sge_count;
1324 struct scatterlist *os_sgl;
1325
1326 sge_count = scsi_dma_map(scp);
1327
1328 if (sge_count) {
1329 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1330 mfi_sgl->sge_skinny[i].length =
1331 cpu_to_le32(sg_dma_len(os_sgl));
1332 mfi_sgl->sge_skinny[i].phys_addr =
1333 cpu_to_le64(sg_dma_address(os_sgl));
1334 mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0);
1335 }
1336 }
1337 return sge_count;
1338 }
1339
1340 /**
1341 * megasas_get_frame_count - Computes the number of frames
1342 * @frame_type : type of frame- io or pthru frame
1343 * @sge_count : number of sg elements
1344 *
1345 * Returns the number of frames required for numnber of sge's (sge_count)
1346 */
1347
megasas_get_frame_count(struct megasas_instance * instance,u8 sge_count,u8 frame_type)1348 static u32 megasas_get_frame_count(struct megasas_instance *instance,
1349 u8 sge_count, u8 frame_type)
1350 {
1351 int num_cnt;
1352 int sge_bytes;
1353 u32 sge_sz;
1354 u32 frame_count = 0;
1355
1356 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
1357 sizeof(struct megasas_sge32);
1358
1359 if (instance->flag_ieee) {
1360 sge_sz = sizeof(struct megasas_sge_skinny);
1361 }
1362
1363 /*
1364 * Main frame can contain 2 SGEs for 64-bit SGLs and
1365 * 3 SGEs for 32-bit SGLs for ldio &
1366 * 1 SGEs for 64-bit SGLs and
1367 * 2 SGEs for 32-bit SGLs for pthru frame
1368 */
1369 if (unlikely(frame_type == PTHRU_FRAME)) {
1370 if (instance->flag_ieee == 1) {
1371 num_cnt = sge_count - 1;
1372 } else if (IS_DMA64)
1373 num_cnt = sge_count - 1;
1374 else
1375 num_cnt = sge_count - 2;
1376 } else {
1377 if (instance->flag_ieee == 1) {
1378 num_cnt = sge_count - 1;
1379 } else if (IS_DMA64)
1380 num_cnt = sge_count - 2;
1381 else
1382 num_cnt = sge_count - 3;
1383 }
1384
1385 if (num_cnt > 0) {
1386 sge_bytes = sge_sz * num_cnt;
1387
1388 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
1389 ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
1390 }
1391 /* Main frame */
1392 frame_count += 1;
1393
1394 if (frame_count > 7)
1395 frame_count = 8;
1396 return frame_count;
1397 }
1398
1399 /**
1400 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
1401 * @instance: Adapter soft state
1402 * @scp: SCSI command
1403 * @cmd: Command to be prepared in
1404 *
1405 * This function prepares CDB commands. These are typcially pass-through
1406 * commands to the devices.
1407 */
1408 static int
megasas_build_dcdb(struct megasas_instance * instance,struct scsi_cmnd * scp,struct megasas_cmd * cmd)1409 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
1410 struct megasas_cmd *cmd)
1411 {
1412 u32 is_logical;
1413 u32 device_id;
1414 u16 flags = 0;
1415 struct megasas_pthru_frame *pthru;
1416
1417 is_logical = MEGASAS_IS_LOGICAL(scp->device);
1418 device_id = MEGASAS_DEV_INDEX(scp);
1419 pthru = (struct megasas_pthru_frame *)cmd->frame;
1420
1421 if (scp->sc_data_direction == DMA_TO_DEVICE)
1422 flags = MFI_FRAME_DIR_WRITE;
1423 else if (scp->sc_data_direction == DMA_FROM_DEVICE)
1424 flags = MFI_FRAME_DIR_READ;
1425 else if (scp->sc_data_direction == DMA_NONE)
1426 flags = MFI_FRAME_DIR_NONE;
1427
1428 if (instance->flag_ieee == 1) {
1429 flags |= MFI_FRAME_IEEE;
1430 }
1431
1432 /*
1433 * Prepare the DCDB frame
1434 */
1435 pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
1436 pthru->cmd_status = 0x0;
1437 pthru->scsi_status = 0x0;
1438 pthru->target_id = device_id;
1439 pthru->lun = scp->device->lun;
1440 pthru->cdb_len = scp->cmd_len;
1441 pthru->timeout = 0;
1442 pthru->pad_0 = 0;
1443 pthru->flags = cpu_to_le16(flags);
1444 pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp));
1445
1446 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1447
1448 /*
1449 * If the command is for the tape device, set the
1450 * pthru timeout to the os layer timeout value.
1451 */
1452 if (scp->device->type == TYPE_TAPE) {
1453 if (scsi_cmd_to_rq(scp)->timeout / HZ > 0xFFFF)
1454 pthru->timeout = cpu_to_le16(0xFFFF);
1455 else
1456 pthru->timeout = cpu_to_le16(scsi_cmd_to_rq(scp)->timeout / HZ);
1457 }
1458
1459 /*
1460 * Construct SGL
1461 */
1462 if (instance->flag_ieee == 1) {
1463 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1464 pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
1465 &pthru->sgl);
1466 } else if (IS_DMA64) {
1467 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1468 pthru->sge_count = megasas_make_sgl64(instance, scp,
1469 &pthru->sgl);
1470 } else
1471 pthru->sge_count = megasas_make_sgl32(instance, scp,
1472 &pthru->sgl);
1473
1474 if (pthru->sge_count > instance->max_num_sge) {
1475 dev_err(&instance->pdev->dev, "DCDB too many SGE NUM=%x\n",
1476 pthru->sge_count);
1477 return 0;
1478 }
1479
1480 /*
1481 * Sense info specific
1482 */
1483 pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
1484 pthru->sense_buf_phys_addr_hi =
1485 cpu_to_le32(upper_32_bits(cmd->sense_phys_addr));
1486 pthru->sense_buf_phys_addr_lo =
1487 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
1488
1489 /*
1490 * Compute the total number of frames this command consumes. FW uses
1491 * this number to pull sufficient number of frames from host memory.
1492 */
1493 cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
1494 PTHRU_FRAME);
1495
1496 return cmd->frame_count;
1497 }
1498
1499 /**
1500 * megasas_build_ldio - Prepares IOs to logical devices
1501 * @instance: Adapter soft state
1502 * @scp: SCSI command
1503 * @cmd: Command to be prepared
1504 *
1505 * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1506 */
1507 static int
megasas_build_ldio(struct megasas_instance * instance,struct scsi_cmnd * scp,struct megasas_cmd * cmd)1508 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1509 struct megasas_cmd *cmd)
1510 {
1511 u32 device_id;
1512 u8 sc = scp->cmnd[0];
1513 u16 flags = 0;
1514 struct megasas_io_frame *ldio;
1515
1516 device_id = MEGASAS_DEV_INDEX(scp);
1517 ldio = (struct megasas_io_frame *)cmd->frame;
1518
1519 if (scp->sc_data_direction == DMA_TO_DEVICE)
1520 flags = MFI_FRAME_DIR_WRITE;
1521 else if (scp->sc_data_direction == DMA_FROM_DEVICE)
1522 flags = MFI_FRAME_DIR_READ;
1523
1524 if (instance->flag_ieee == 1) {
1525 flags |= MFI_FRAME_IEEE;
1526 }
1527
1528 /*
1529 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
1530 */
1531 ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
1532 ldio->cmd_status = 0x0;
1533 ldio->scsi_status = 0x0;
1534 ldio->target_id = device_id;
1535 ldio->timeout = 0;
1536 ldio->reserved_0 = 0;
1537 ldio->pad_0 = 0;
1538 ldio->flags = cpu_to_le16(flags);
1539 ldio->start_lba_hi = 0;
1540 ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
1541
1542 /*
1543 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1544 */
1545 if (scp->cmd_len == 6) {
1546 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]);
1547 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) |
1548 ((u32) scp->cmnd[2] << 8) |
1549 (u32) scp->cmnd[3]);
1550
1551 ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF);
1552 }
1553
1554 /*
1555 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1556 */
1557 else if (scp->cmd_len == 10) {
1558 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] |
1559 ((u32) scp->cmnd[7] << 8));
1560 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1561 ((u32) scp->cmnd[3] << 16) |
1562 ((u32) scp->cmnd[4] << 8) |
1563 (u32) scp->cmnd[5]);
1564 }
1565
1566 /*
1567 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1568 */
1569 else if (scp->cmd_len == 12) {
1570 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1571 ((u32) scp->cmnd[7] << 16) |
1572 ((u32) scp->cmnd[8] << 8) |
1573 (u32) scp->cmnd[9]);
1574
1575 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1576 ((u32) scp->cmnd[3] << 16) |
1577 ((u32) scp->cmnd[4] << 8) |
1578 (u32) scp->cmnd[5]);
1579 }
1580
1581 /*
1582 * 16-byte READ(0x88) or WRITE(0x8A) cdb
1583 */
1584 else if (scp->cmd_len == 16) {
1585 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) |
1586 ((u32) scp->cmnd[11] << 16) |
1587 ((u32) scp->cmnd[12] << 8) |
1588 (u32) scp->cmnd[13]);
1589
1590 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1591 ((u32) scp->cmnd[7] << 16) |
1592 ((u32) scp->cmnd[8] << 8) |
1593 (u32) scp->cmnd[9]);
1594
1595 ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1596 ((u32) scp->cmnd[3] << 16) |
1597 ((u32) scp->cmnd[4] << 8) |
1598 (u32) scp->cmnd[5]);
1599
1600 }
1601
1602 /*
1603 * Construct SGL
1604 */
1605 if (instance->flag_ieee) {
1606 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1607 ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
1608 &ldio->sgl);
1609 } else if (IS_DMA64) {
1610 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1611 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
1612 } else
1613 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
1614
1615 if (ldio->sge_count > instance->max_num_sge) {
1616 dev_err(&instance->pdev->dev, "build_ld_io: sge_count = %x\n",
1617 ldio->sge_count);
1618 return 0;
1619 }
1620
1621 /*
1622 * Sense info specific
1623 */
1624 ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
1625 ldio->sense_buf_phys_addr_hi = 0;
1626 ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr);
1627
1628 /*
1629 * Compute the total number of frames this command consumes. FW uses
1630 * this number to pull sufficient number of frames from host memory.
1631 */
1632 cmd->frame_count = megasas_get_frame_count(instance,
1633 ldio->sge_count, IO_FRAME);
1634
1635 return cmd->frame_count;
1636 }
1637
1638 /**
1639 * megasas_cmd_type - Checks if the cmd is for logical drive/sysPD
1640 * and whether it's RW or non RW
1641 * @cmd: SCSI command
1642 *
1643 */
megasas_cmd_type(struct scsi_cmnd * cmd)1644 inline int megasas_cmd_type(struct scsi_cmnd *cmd)
1645 {
1646 int ret;
1647
1648 switch (cmd->cmnd[0]) {
1649 case READ_10:
1650 case WRITE_10:
1651 case READ_12:
1652 case WRITE_12:
1653 case READ_6:
1654 case WRITE_6:
1655 case READ_16:
1656 case WRITE_16:
1657 ret = (MEGASAS_IS_LOGICAL(cmd->device)) ?
1658 READ_WRITE_LDIO : READ_WRITE_SYSPDIO;
1659 break;
1660 default:
1661 ret = (MEGASAS_IS_LOGICAL(cmd->device)) ?
1662 NON_READ_WRITE_LDIO : NON_READ_WRITE_SYSPDIO;
1663 }
1664 return ret;
1665 }
1666
1667 /**
1668 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds
1669 * in FW
1670 * @instance: Adapter soft state
1671 */
1672 static inline void
megasas_dump_pending_frames(struct megasas_instance * instance)1673 megasas_dump_pending_frames(struct megasas_instance *instance)
1674 {
1675 struct megasas_cmd *cmd;
1676 int i,n;
1677 union megasas_sgl *mfi_sgl;
1678 struct megasas_io_frame *ldio;
1679 struct megasas_pthru_frame *pthru;
1680 u32 sgcount;
1681 u16 max_cmd = instance->max_fw_cmds;
1682
1683 dev_err(&instance->pdev->dev, "[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
1684 dev_err(&instance->pdev->dev, "[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1685 if (IS_DMA64)
1686 dev_err(&instance->pdev->dev, "[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1687 else
1688 dev_err(&instance->pdev->dev, "[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1689
1690 dev_err(&instance->pdev->dev, "[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1691 for (i = 0; i < max_cmd; i++) {
1692 cmd = instance->cmd_list[i];
1693 if (!cmd->scmd)
1694 continue;
1695 dev_err(&instance->pdev->dev, "[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
1696 if (megasas_cmd_type(cmd->scmd) == READ_WRITE_LDIO) {
1697 ldio = (struct megasas_io_frame *)cmd->frame;
1698 mfi_sgl = &ldio->sgl;
1699 sgcount = ldio->sge_count;
1700 dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x,"
1701 " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1702 instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id,
1703 le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi),
1704 le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount);
1705 } else {
1706 pthru = (struct megasas_pthru_frame *) cmd->frame;
1707 mfi_sgl = &pthru->sgl;
1708 sgcount = pthru->sge_count;
1709 dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, "
1710 "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1711 instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id,
1712 pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len),
1713 le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount);
1714 }
1715 if (megasas_dbg_lvl & MEGASAS_DBG_LVL) {
1716 for (n = 0; n < sgcount; n++) {
1717 if (IS_DMA64)
1718 dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%llx\n",
1719 le32_to_cpu(mfi_sgl->sge64[n].length),
1720 le64_to_cpu(mfi_sgl->sge64[n].phys_addr));
1721 else
1722 dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%x\n",
1723 le32_to_cpu(mfi_sgl->sge32[n].length),
1724 le32_to_cpu(mfi_sgl->sge32[n].phys_addr));
1725 }
1726 }
1727 } /*for max_cmd*/
1728 dev_err(&instance->pdev->dev, "[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1729 for (i = 0; i < max_cmd; i++) {
1730
1731 cmd = instance->cmd_list[i];
1732
1733 if (cmd->sync_cmd == 1)
1734 dev_err(&instance->pdev->dev, "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1735 }
1736 dev_err(&instance->pdev->dev, "[%d]: Dumping Done\n\n",instance->host->host_no);
1737 }
1738
1739 u32
megasas_build_and_issue_cmd(struct megasas_instance * instance,struct scsi_cmnd * scmd)1740 megasas_build_and_issue_cmd(struct megasas_instance *instance,
1741 struct scsi_cmnd *scmd)
1742 {
1743 struct megasas_cmd *cmd;
1744 u32 frame_count;
1745
1746 cmd = megasas_get_cmd(instance);
1747 if (!cmd)
1748 return SCSI_MLQUEUE_HOST_BUSY;
1749
1750 /*
1751 * Logical drive command
1752 */
1753 if (megasas_cmd_type(scmd) == READ_WRITE_LDIO)
1754 frame_count = megasas_build_ldio(instance, scmd, cmd);
1755 else
1756 frame_count = megasas_build_dcdb(instance, scmd, cmd);
1757
1758 if (!frame_count)
1759 goto out_return_cmd;
1760
1761 cmd->scmd = scmd;
1762 megasas_priv(scmd)->cmd_priv = cmd;
1763
1764 /*
1765 * Issue the command to the FW
1766 */
1767 atomic_inc(&instance->fw_outstanding);
1768
1769 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
1770 cmd->frame_count-1, instance->reg_set);
1771
1772 return 0;
1773 out_return_cmd:
1774 megasas_return_cmd(instance, cmd);
1775 return SCSI_MLQUEUE_HOST_BUSY;
1776 }
1777
1778
1779 /**
1780 * megasas_queue_command - Queue entry point
1781 * @shost: adapter SCSI host
1782 * @scmd: SCSI command to be queued
1783 */
megasas_queue_command(struct Scsi_Host * shost,struct scsi_cmnd * scmd)1784 static enum scsi_qc_status megasas_queue_command(struct Scsi_Host *shost,
1785 struct scsi_cmnd *scmd)
1786 {
1787 struct megasas_instance *instance;
1788 struct MR_PRIV_DEVICE *mr_device_priv_data;
1789 u32 ld_tgt_id;
1790
1791 instance = (struct megasas_instance *)
1792 scmd->device->host->hostdata;
1793
1794 if (instance->unload == 1) {
1795 scmd->result = DID_NO_CONNECT << 16;
1796 scsi_done(scmd);
1797 return 0;
1798 }
1799
1800 if (instance->issuepend_done == 0)
1801 return SCSI_MLQUEUE_HOST_BUSY;
1802
1803
1804 /* Check for an mpio path and adjust behavior */
1805 if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
1806 if (megasas_check_mpio_paths(instance, scmd) ==
1807 (DID_REQUEUE << 16)) {
1808 return SCSI_MLQUEUE_HOST_BUSY;
1809 } else {
1810 scmd->result = DID_NO_CONNECT << 16;
1811 scsi_done(scmd);
1812 return 0;
1813 }
1814 }
1815
1816 mr_device_priv_data = scmd->device->hostdata;
1817 if (!mr_device_priv_data ||
1818 (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)) {
1819 scmd->result = DID_NO_CONNECT << 16;
1820 scsi_done(scmd);
1821 return 0;
1822 }
1823
1824 if (MEGASAS_IS_LOGICAL(scmd->device)) {
1825 ld_tgt_id = MEGASAS_TARGET_ID(scmd->device);
1826 if (instance->ld_tgtid_status[ld_tgt_id] == LD_TARGET_ID_DELETED) {
1827 scmd->result = DID_NO_CONNECT << 16;
1828 scsi_done(scmd);
1829 return 0;
1830 }
1831 }
1832
1833 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
1834 return SCSI_MLQUEUE_HOST_BUSY;
1835
1836 if (mr_device_priv_data->tm_busy)
1837 return SCSI_MLQUEUE_DEVICE_BUSY;
1838
1839
1840 scmd->result = 0;
1841
1842 if (MEGASAS_IS_LOGICAL(scmd->device) &&
1843 (scmd->device->id >= instance->fw_supported_vd_count ||
1844 scmd->device->lun)) {
1845 scmd->result = DID_BAD_TARGET << 16;
1846 goto out_done;
1847 }
1848
1849 if ((scmd->cmnd[0] == SYNCHRONIZE_CACHE) &&
1850 MEGASAS_IS_LOGICAL(scmd->device) &&
1851 (!instance->fw_sync_cache_support)) {
1852 scmd->result = DID_OK << 16;
1853 goto out_done;
1854 }
1855
1856 return instance->instancet->build_and_issue_cmd(instance, scmd);
1857
1858 out_done:
1859 scsi_done(scmd);
1860 return 0;
1861 }
1862
megasas_lookup_instance(u16 host_no)1863 static struct megasas_instance *megasas_lookup_instance(u16 host_no)
1864 {
1865 int i;
1866
1867 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
1868
1869 if ((megasas_mgmt_info.instance[i]) &&
1870 (megasas_mgmt_info.instance[i]->host->host_no == host_no))
1871 return megasas_mgmt_info.instance[i];
1872 }
1873
1874 return NULL;
1875 }
1876
1877 /*
1878 * megasas_set_dynamic_target_properties -
1879 * Device property set by driver may not be static and it is required to be
1880 * updated after OCR
1881 *
1882 * set tm_capable.
1883 * set dma alignment (only for eedp protection enable vd).
1884 *
1885 * @sdev: OS provided scsi device
1886 *
1887 * Returns void
1888 */
megasas_set_dynamic_target_properties(struct scsi_device * sdev,struct queue_limits * lim,bool is_target_prop)1889 void megasas_set_dynamic_target_properties(struct scsi_device *sdev,
1890 struct queue_limits *lim, bool is_target_prop)
1891 {
1892 u16 pd_index = 0, ld;
1893 u32 device_id;
1894 struct megasas_instance *instance;
1895 struct fusion_context *fusion;
1896 struct MR_PRIV_DEVICE *mr_device_priv_data;
1897 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
1898 struct MR_LD_RAID *raid;
1899 struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
1900
1901 instance = megasas_lookup_instance(sdev->host->host_no);
1902 fusion = instance->ctrl_context;
1903 mr_device_priv_data = sdev->hostdata;
1904
1905 if (!fusion || !mr_device_priv_data)
1906 return;
1907
1908 if (MEGASAS_IS_LOGICAL(sdev)) {
1909 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL)
1910 + sdev->id;
1911 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
1912 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
1913 if (ld >= instance->fw_supported_vd_count)
1914 return;
1915 raid = MR_LdRaidGet(ld, local_map_ptr);
1916
1917 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER) {
1918 if (lim)
1919 lim->dma_alignment = 0x7;
1920 }
1921
1922 mr_device_priv_data->is_tm_capable =
1923 raid->capability.tmCapable;
1924
1925 if (!raid->flags.isEPD)
1926 sdev->no_write_same = 1;
1927
1928 } else if (instance->use_seqnum_jbod_fp) {
1929 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1930 sdev->id;
1931 pd_sync = (void *)fusion->pd_seq_sync
1932 [(instance->pd_seq_map_id - 1) & 1];
1933 mr_device_priv_data->is_tm_capable =
1934 pd_sync->seq[pd_index].capability.tmCapable;
1935 }
1936
1937 if (is_target_prop && instance->tgt_prop->reset_tmo) {
1938 /*
1939 * If FW provides a target reset timeout value, driver will use
1940 * it. If not set, fallback to default values.
1941 */
1942 mr_device_priv_data->target_reset_tmo =
1943 min_t(u8, instance->max_reset_tmo,
1944 instance->tgt_prop->reset_tmo);
1945 mr_device_priv_data->task_abort_tmo = instance->task_abort_tmo;
1946 } else {
1947 mr_device_priv_data->target_reset_tmo =
1948 MEGASAS_DEFAULT_TM_TIMEOUT;
1949 mr_device_priv_data->task_abort_tmo =
1950 MEGASAS_DEFAULT_TM_TIMEOUT;
1951 }
1952 }
1953
1954 /*
1955 * megasas_set_nvme_device_properties -
1956 * set nomerges=2
1957 * set virtual page boundary = 4K (current mr_nvme_pg_size is 4K).
1958 * set maximum io transfer = MDTS of NVME device provided by MR firmware.
1959 *
1960 * MR firmware provides value in KB. Caller of this function converts
1961 * kb into bytes.
1962 *
1963 * e.a MDTS=5 means 2^5 * nvme page size. (In case of 4K page size,
1964 * MR firmware provides value 128 as (32 * 4K) = 128K.
1965 *
1966 * @sdev: scsi device
1967 * @max_io_size: maximum io transfer size
1968 *
1969 */
1970 static inline void
megasas_set_nvme_device_properties(struct scsi_device * sdev,struct queue_limits * lim,u32 max_io_size)1971 megasas_set_nvme_device_properties(struct scsi_device *sdev,
1972 struct queue_limits *lim, u32 max_io_size)
1973 {
1974 struct megasas_instance *instance;
1975 u32 mr_nvme_pg_size;
1976 u64 max_prp_io;
1977
1978 instance = (struct megasas_instance *)sdev->host->hostdata;
1979 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
1980 MR_DEFAULT_NVME_PAGE_SIZE);
1981
1982 /*
1983 * megasas_make_prp_nvme() builds the PRP list in cmd->sg_frame without
1984 * bounding it against that buffer, and spends one entry per page of
1985 * it on the chain pointer. Cap the transfer at what the buffer holds,
1986 * less one page for lists that start off a page boundary.
1987 */
1988 max_prp_io = (u64)((instance->max_chain_frame_sz / sizeof(u64)) -
1989 (instance->max_chain_frame_sz / mr_nvme_pg_size) - 1) *
1990 mr_nvme_pg_size;
1991
1992 lim->max_hw_sectors = min_t(u64, max_io_size, max_prp_io) >> SECTOR_SHIFT;
1993 lim->virt_boundary_mask = mr_nvme_pg_size - 1;
1994 }
1995
1996 /*
1997 * megasas_set_fw_assisted_qd -
1998 * set device queue depth to can_queue
1999 * set device queue depth to fw assisted qd
2000 *
2001 * @sdev: scsi device
2002 * @is_target_prop true, if fw provided target properties.
2003 */
megasas_set_fw_assisted_qd(struct scsi_device * sdev,bool is_target_prop)2004 static void megasas_set_fw_assisted_qd(struct scsi_device *sdev,
2005 bool is_target_prop)
2006 {
2007 u8 interface_type;
2008 u32 device_qd = MEGASAS_DEFAULT_CMD_PER_LUN;
2009 u32 tgt_device_qd;
2010 struct megasas_instance *instance;
2011 struct MR_PRIV_DEVICE *mr_device_priv_data;
2012
2013 instance = megasas_lookup_instance(sdev->host->host_no);
2014 mr_device_priv_data = sdev->hostdata;
2015 interface_type = mr_device_priv_data->interface_type;
2016
2017 switch (interface_type) {
2018 case SAS_PD:
2019 device_qd = MEGASAS_SAS_QD;
2020 break;
2021 case SATA_PD:
2022 device_qd = MEGASAS_SATA_QD;
2023 break;
2024 case NVME_PD:
2025 device_qd = MEGASAS_NVME_QD;
2026 break;
2027 }
2028
2029 if (is_target_prop) {
2030 tgt_device_qd = le32_to_cpu(instance->tgt_prop->device_qdepth);
2031 if (tgt_device_qd)
2032 device_qd = min(instance->host->can_queue,
2033 (int)tgt_device_qd);
2034 }
2035
2036 if (instance->enable_sdev_max_qd && interface_type != UNKNOWN_DRIVE)
2037 device_qd = instance->host->can_queue;
2038
2039 scsi_change_queue_depth(sdev, device_qd);
2040 }
2041
2042 /*
2043 * megasas_set_static_target_properties -
2044 * Device property set by driver are static and it is not required to be
2045 * updated after OCR.
2046 *
2047 * set io timeout
2048 * set device queue depth
2049 * set nvme device properties. see - megasas_set_nvme_device_properties
2050 *
2051 * @sdev: scsi device
2052 * @is_target_prop true, if fw provided target properties.
2053 */
megasas_set_static_target_properties(struct scsi_device * sdev,struct queue_limits * lim,bool is_target_prop)2054 static void megasas_set_static_target_properties(struct scsi_device *sdev,
2055 struct queue_limits *lim, bool is_target_prop)
2056 {
2057 u32 max_io_size_kb = MR_DEFAULT_NVME_MDTS_KB;
2058 struct megasas_instance *instance;
2059
2060 instance = megasas_lookup_instance(sdev->host->host_no);
2061
2062 /*
2063 * The RAID firmware may require extended timeouts.
2064 */
2065 blk_queue_rq_timeout(sdev->request_queue, scmd_timeout * HZ);
2066
2067 /* max_io_size_kb will be set to non zero for
2068 * nvme based vd and syspd.
2069 */
2070 if (is_target_prop)
2071 max_io_size_kb = le32_to_cpu(instance->tgt_prop->max_io_size_kb);
2072
2073 if (instance->nvme_page_size && max_io_size_kb)
2074 megasas_set_nvme_device_properties(sdev, lim,
2075 max_io_size_kb << 10);
2076
2077 megasas_set_fw_assisted_qd(sdev, is_target_prop);
2078 }
2079
2080
megasas_sdev_configure(struct scsi_device * sdev,struct queue_limits * lim)2081 static int megasas_sdev_configure(struct scsi_device *sdev,
2082 struct queue_limits *lim)
2083 {
2084 u16 pd_index = 0;
2085 struct megasas_instance *instance;
2086 int ret_target_prop = DCMD_FAILED;
2087 bool is_target_prop = false;
2088
2089 instance = megasas_lookup_instance(sdev->host->host_no);
2090 if (instance->pd_list_not_supported) {
2091 if (!MEGASAS_IS_LOGICAL(sdev) && sdev->type == TYPE_DISK) {
2092 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
2093 sdev->id;
2094 if (instance->pd_list[pd_index].driveState !=
2095 MR_PD_STATE_SYSTEM)
2096 return -ENXIO;
2097 }
2098 }
2099
2100 mutex_lock(&instance->reset_mutex);
2101 /* Send DCMD to Firmware and cache the information */
2102 if ((instance->pd_info) && !MEGASAS_IS_LOGICAL(sdev))
2103 megasas_get_pd_info(instance, sdev);
2104
2105 /* Some ventura firmware may not have instance->nvme_page_size set.
2106 * Do not send MR_DCMD_DRV_GET_TARGET_PROP
2107 */
2108 if ((instance->tgt_prop) && (instance->nvme_page_size))
2109 ret_target_prop = megasas_get_target_prop(instance, sdev);
2110
2111 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
2112 megasas_set_static_target_properties(sdev, lim, is_target_prop);
2113
2114 /* This sdev property may change post OCR */
2115 megasas_set_dynamic_target_properties(sdev, lim, is_target_prop);
2116
2117 if (!MEGASAS_IS_LOGICAL(sdev))
2118 sdev->no_vpd_size = 1;
2119
2120 mutex_unlock(&instance->reset_mutex);
2121
2122 return 0;
2123 }
2124
megasas_sdev_init(struct scsi_device * sdev)2125 static int megasas_sdev_init(struct scsi_device *sdev)
2126 {
2127 u16 pd_index = 0, ld_tgt_id;
2128 struct megasas_instance *instance ;
2129 struct MR_PRIV_DEVICE *mr_device_priv_data;
2130
2131 instance = megasas_lookup_instance(sdev->host->host_no);
2132 if (!MEGASAS_IS_LOGICAL(sdev)) {
2133 /*
2134 * Open the OS scan to the SYSTEM PD
2135 */
2136 pd_index =
2137 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
2138 sdev->id;
2139 if ((instance->pd_list_not_supported ||
2140 instance->pd_list[pd_index].driveState ==
2141 MR_PD_STATE_SYSTEM)) {
2142 goto scan_target;
2143 }
2144 return -ENXIO;
2145 } else if (!MEGASAS_IS_LUN_VALID(sdev)) {
2146 sdev_printk(KERN_INFO, sdev, "%s: invalid LUN\n", __func__);
2147 return -ENXIO;
2148 }
2149
2150 scan_target:
2151 mr_device_priv_data = kzalloc_obj(*mr_device_priv_data);
2152 if (!mr_device_priv_data)
2153 return -ENOMEM;
2154
2155 if (MEGASAS_IS_LOGICAL(sdev)) {
2156 ld_tgt_id = MEGASAS_TARGET_ID(sdev);
2157 instance->ld_tgtid_status[ld_tgt_id] = LD_TARGET_ID_ACTIVE;
2158 if (megasas_dbg_lvl & LD_PD_DEBUG)
2159 sdev_printk(KERN_INFO, sdev, "LD target ID %d created.\n", ld_tgt_id);
2160 }
2161
2162 sdev->hostdata = mr_device_priv_data;
2163
2164 atomic_set(&mr_device_priv_data->r1_ldio_hint,
2165 instance->r1_ldio_hint_default);
2166 return 0;
2167 }
2168
megasas_sdev_destroy(struct scsi_device * sdev)2169 static void megasas_sdev_destroy(struct scsi_device *sdev)
2170 {
2171 u16 ld_tgt_id;
2172 struct megasas_instance *instance;
2173
2174 instance = megasas_lookup_instance(sdev->host->host_no);
2175
2176 if (MEGASAS_IS_LOGICAL(sdev)) {
2177 if (!MEGASAS_IS_LUN_VALID(sdev)) {
2178 sdev_printk(KERN_INFO, sdev, "%s: invalid LUN\n", __func__);
2179 return;
2180 }
2181 ld_tgt_id = MEGASAS_TARGET_ID(sdev);
2182 instance->ld_tgtid_status[ld_tgt_id] = LD_TARGET_ID_DELETED;
2183 if (megasas_dbg_lvl & LD_PD_DEBUG)
2184 sdev_printk(KERN_INFO, sdev,
2185 "LD target ID %d removed from OS stack\n", ld_tgt_id);
2186 }
2187
2188 kfree(sdev->hostdata);
2189 sdev->hostdata = NULL;
2190 }
2191
2192 /*
2193 * megasas_complete_outstanding_ioctls - Complete outstanding ioctls after a
2194 * kill adapter
2195 * @instance: Adapter soft state
2196 *
2197 */
megasas_complete_outstanding_ioctls(struct megasas_instance * instance)2198 static void megasas_complete_outstanding_ioctls(struct megasas_instance *instance)
2199 {
2200 int i;
2201 struct megasas_cmd *cmd_mfi;
2202 struct megasas_cmd_fusion *cmd_fusion;
2203 struct fusion_context *fusion = instance->ctrl_context;
2204
2205 /* Find all outstanding ioctls */
2206 if (fusion) {
2207 for (i = 0; i < instance->max_fw_cmds; i++) {
2208 cmd_fusion = fusion->cmd_list[i];
2209 if (cmd_fusion->sync_cmd_idx != (u32)ULONG_MAX) {
2210 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
2211 if (cmd_mfi->sync_cmd &&
2212 (cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT)) {
2213 cmd_mfi->frame->hdr.cmd_status =
2214 MFI_STAT_WRONG_STATE;
2215 megasas_complete_cmd(instance,
2216 cmd_mfi, DID_OK);
2217 }
2218 }
2219 }
2220 } else {
2221 for (i = 0; i < instance->max_fw_cmds; i++) {
2222 cmd_mfi = instance->cmd_list[i];
2223 if (cmd_mfi->sync_cmd && cmd_mfi->frame->hdr.cmd !=
2224 MFI_CMD_ABORT)
2225 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
2226 }
2227 }
2228 }
2229
2230
megaraid_sas_kill_hba(struct megasas_instance * instance)2231 void megaraid_sas_kill_hba(struct megasas_instance *instance)
2232 {
2233 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2234 dev_warn(&instance->pdev->dev,
2235 "Adapter already dead, skipping kill HBA\n");
2236 return;
2237 }
2238
2239 /* Set critical error to block I/O & ioctls in case caller didn't */
2240 atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2241 /* Wait 1 second to ensure IO or ioctls in build have posted */
2242 msleep(1000);
2243 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2244 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2245 (instance->adapter_type != MFI_SERIES)) {
2246 if (!instance->requestorId) {
2247 writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
2248 /* Flush */
2249 readl(&instance->reg_set->doorbell);
2250 }
2251 if (instance->requestorId && instance->peerIsPresent)
2252 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
2253 } else {
2254 writel(MFI_STOP_ADP,
2255 &instance->reg_set->inbound_doorbell);
2256 }
2257 /* Complete outstanding ioctls when adapter is killed */
2258 megasas_complete_outstanding_ioctls(instance);
2259 }
2260
2261 /**
2262 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
2263 * restored to max value
2264 * @instance: Adapter soft state
2265 *
2266 */
2267 void
megasas_check_and_restore_queue_depth(struct megasas_instance * instance)2268 megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
2269 {
2270 unsigned long flags;
2271
2272 if (instance->flag & MEGASAS_FW_BUSY
2273 && time_after(jiffies, instance->last_time + 5 * HZ)
2274 && atomic_read(&instance->fw_outstanding) <
2275 instance->throttlequeuedepth + 1) {
2276
2277 spin_lock_irqsave(instance->host->host_lock, flags);
2278 instance->flag &= ~MEGASAS_FW_BUSY;
2279
2280 instance->host->can_queue = instance->cur_can_queue;
2281 spin_unlock_irqrestore(instance->host->host_lock, flags);
2282 }
2283 }
2284
2285 /**
2286 * megasas_complete_cmd_dpc - Returns FW's controller structure
2287 * @instance_addr: Address of adapter soft state
2288 *
2289 * Tasklet to complete cmds
2290 */
megasas_complete_cmd_dpc(unsigned long instance_addr)2291 static void megasas_complete_cmd_dpc(unsigned long instance_addr)
2292 {
2293 u32 producer;
2294 u32 consumer;
2295 u32 context;
2296 struct megasas_cmd *cmd;
2297 struct megasas_instance *instance =
2298 (struct megasas_instance *)instance_addr;
2299 unsigned long flags;
2300
2301 /* If we have already declared adapter dead, donot complete cmds */
2302 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
2303 return;
2304
2305 spin_lock_irqsave(&instance->completion_lock, flags);
2306
2307 producer = le32_to_cpu(*instance->producer);
2308 consumer = le32_to_cpu(*instance->consumer);
2309
2310 while (consumer != producer) {
2311 context = le32_to_cpu(instance->reply_queue[consumer]);
2312 if (context >= instance->max_fw_cmds) {
2313 dev_err(&instance->pdev->dev, "Unexpected context value %x\n",
2314 context);
2315 BUG();
2316 }
2317
2318 cmd = instance->cmd_list[context];
2319
2320 megasas_complete_cmd(instance, cmd, DID_OK);
2321
2322 consumer++;
2323 if (consumer == (instance->max_fw_cmds + 1)) {
2324 consumer = 0;
2325 }
2326 }
2327
2328 *instance->consumer = cpu_to_le32(producer);
2329
2330 spin_unlock_irqrestore(&instance->completion_lock, flags);
2331
2332 /*
2333 * Check if we can restore can_queue
2334 */
2335 megasas_check_and_restore_queue_depth(instance);
2336 }
2337
2338 static void megasas_sriov_heartbeat_handler(struct timer_list *t);
2339
2340 /**
2341 * megasas_start_timer - Initializes sriov heartbeat timer object
2342 * @instance: Adapter soft state
2343 *
2344 */
megasas_start_timer(struct megasas_instance * instance)2345 void megasas_start_timer(struct megasas_instance *instance)
2346 {
2347 struct timer_list *timer = &instance->sriov_heartbeat_timer;
2348
2349 timer_setup(timer, megasas_sriov_heartbeat_handler, 0);
2350 timer->expires = jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF;
2351 add_timer(timer);
2352 }
2353
2354 static void
2355 megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
2356
2357 static void
2358 process_fw_state_change_wq(struct work_struct *work);
2359
megasas_do_ocr(struct megasas_instance * instance)2360 static void megasas_do_ocr(struct megasas_instance *instance)
2361 {
2362 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
2363 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
2364 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
2365 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
2366 }
2367 instance->instancet->disable_intr(instance);
2368 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
2369 instance->issuepend_done = 0;
2370
2371 atomic_set(&instance->fw_outstanding, 0);
2372 megasas_internal_reset_defer_cmds(instance);
2373 process_fw_state_change_wq(&instance->work_init);
2374 }
2375
megasas_get_ld_vf_affiliation_111(struct megasas_instance * instance,int initial)2376 static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance,
2377 int initial)
2378 {
2379 struct megasas_cmd *cmd;
2380 struct megasas_dcmd_frame *dcmd;
2381 struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL;
2382 dma_addr_t new_affiliation_111_h;
2383 int ld, retval = 0;
2384 u8 thisVf;
2385
2386 cmd = megasas_get_cmd(instance);
2387
2388 if (!cmd) {
2389 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation_111:"
2390 "Failed to get cmd for scsi%d\n",
2391 instance->host->host_no);
2392 return -ENOMEM;
2393 }
2394
2395 dcmd = &cmd->frame->dcmd;
2396
2397 if (!instance->vf_affiliation_111) {
2398 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2399 "affiliation for scsi%d\n", instance->host->host_no);
2400 megasas_return_cmd(instance, cmd);
2401 return -ENOMEM;
2402 }
2403
2404 if (initial)
2405 memset(instance->vf_affiliation_111, 0,
2406 sizeof(struct MR_LD_VF_AFFILIATION_111));
2407 else {
2408 new_affiliation_111 =
2409 dma_alloc_coherent(&instance->pdev->dev,
2410 sizeof(struct MR_LD_VF_AFFILIATION_111),
2411 &new_affiliation_111_h, GFP_KERNEL);
2412 if (!new_affiliation_111) {
2413 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2414 "memory for new affiliation for scsi%d\n",
2415 instance->host->host_no);
2416 megasas_return_cmd(instance, cmd);
2417 return -ENOMEM;
2418 }
2419 }
2420
2421 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2422
2423 dcmd->cmd = MFI_CMD_DCMD;
2424 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2425 dcmd->sge_count = 1;
2426 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2427 dcmd->timeout = 0;
2428 dcmd->pad_0 = 0;
2429 dcmd->data_xfer_len =
2430 cpu_to_le32(sizeof(struct MR_LD_VF_AFFILIATION_111));
2431 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111);
2432
2433 if (initial)
2434 dcmd->sgl.sge32[0].phys_addr =
2435 cpu_to_le32(instance->vf_affiliation_111_h);
2436 else
2437 dcmd->sgl.sge32[0].phys_addr =
2438 cpu_to_le32(new_affiliation_111_h);
2439
2440 dcmd->sgl.sge32[0].length = cpu_to_le32(
2441 sizeof(struct MR_LD_VF_AFFILIATION_111));
2442
2443 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2444 "scsi%d\n", instance->host->host_no);
2445
2446 if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2447 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2448 " failed with status 0x%x for scsi%d\n",
2449 dcmd->cmd_status, instance->host->host_no);
2450 retval = 1; /* Do a scan if we couldn't get affiliation */
2451 goto out;
2452 }
2453
2454 if (!initial) {
2455 thisVf = new_affiliation_111->thisVf;
2456 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++)
2457 if (instance->vf_affiliation_111->map[ld].policy[thisVf] !=
2458 new_affiliation_111->map[ld].policy[thisVf]) {
2459 dev_warn(&instance->pdev->dev, "SR-IOV: "
2460 "Got new LD/VF affiliation for scsi%d\n",
2461 instance->host->host_no);
2462 memcpy(instance->vf_affiliation_111,
2463 new_affiliation_111,
2464 sizeof(struct MR_LD_VF_AFFILIATION_111));
2465 retval = 1;
2466 goto out;
2467 }
2468 }
2469 out:
2470 if (new_affiliation_111) {
2471 dma_free_coherent(&instance->pdev->dev,
2472 sizeof(struct MR_LD_VF_AFFILIATION_111),
2473 new_affiliation_111,
2474 new_affiliation_111_h);
2475 }
2476
2477 megasas_return_cmd(instance, cmd);
2478
2479 return retval;
2480 }
2481
megasas_get_ld_vf_affiliation_12(struct megasas_instance * instance,int initial)2482 static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance,
2483 int initial)
2484 {
2485 struct megasas_cmd *cmd;
2486 struct megasas_dcmd_frame *dcmd;
2487 struct MR_LD_VF_AFFILIATION *new_affiliation = NULL;
2488 struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL;
2489 dma_addr_t new_affiliation_h;
2490 int i, j, retval = 0, found = 0, doscan = 0;
2491 u8 thisVf;
2492
2493 cmd = megasas_get_cmd(instance);
2494
2495 if (!cmd) {
2496 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation12: "
2497 "Failed to get cmd for scsi%d\n",
2498 instance->host->host_no);
2499 return -ENOMEM;
2500 }
2501
2502 dcmd = &cmd->frame->dcmd;
2503
2504 if (!instance->vf_affiliation) {
2505 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2506 "affiliation for scsi%d\n", instance->host->host_no);
2507 megasas_return_cmd(instance, cmd);
2508 return -ENOMEM;
2509 }
2510
2511 if (initial)
2512 memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
2513 sizeof(struct MR_LD_VF_AFFILIATION));
2514 else {
2515 new_affiliation =
2516 dma_alloc_coherent(&instance->pdev->dev,
2517 (MAX_LOGICAL_DRIVES + 1) * sizeof(struct MR_LD_VF_AFFILIATION),
2518 &new_affiliation_h, GFP_KERNEL);
2519 if (!new_affiliation) {
2520 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2521 "memory for new affiliation for scsi%d\n",
2522 instance->host->host_no);
2523 megasas_return_cmd(instance, cmd);
2524 return -ENOMEM;
2525 }
2526 }
2527
2528 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2529
2530 dcmd->cmd = MFI_CMD_DCMD;
2531 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2532 dcmd->sge_count = 1;
2533 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2534 dcmd->timeout = 0;
2535 dcmd->pad_0 = 0;
2536 dcmd->data_xfer_len = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2537 sizeof(struct MR_LD_VF_AFFILIATION));
2538 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS);
2539
2540 if (initial)
2541 dcmd->sgl.sge32[0].phys_addr =
2542 cpu_to_le32(instance->vf_affiliation_h);
2543 else
2544 dcmd->sgl.sge32[0].phys_addr =
2545 cpu_to_le32(new_affiliation_h);
2546
2547 dcmd->sgl.sge32[0].length = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2548 sizeof(struct MR_LD_VF_AFFILIATION));
2549
2550 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2551 "scsi%d\n", instance->host->host_no);
2552
2553
2554 if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2555 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2556 " failed with status 0x%x for scsi%d\n",
2557 dcmd->cmd_status, instance->host->host_no);
2558 retval = 1; /* Do a scan if we couldn't get affiliation */
2559 goto out;
2560 }
2561
2562 if (!initial) {
2563 if (!new_affiliation->ldCount) {
2564 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2565 "affiliation for passive path for scsi%d\n",
2566 instance->host->host_no);
2567 retval = 1;
2568 goto out;
2569 }
2570 newmap = new_affiliation->map;
2571 savedmap = instance->vf_affiliation->map;
2572 thisVf = new_affiliation->thisVf;
2573 for (i = 0 ; i < new_affiliation->ldCount; i++) {
2574 found = 0;
2575 for (j = 0; j < instance->vf_affiliation->ldCount;
2576 j++) {
2577 if (newmap->ref.targetId ==
2578 savedmap->ref.targetId) {
2579 found = 1;
2580 if (newmap->policy[thisVf] !=
2581 savedmap->policy[thisVf]) {
2582 doscan = 1;
2583 goto out;
2584 }
2585 }
2586 savedmap = (struct MR_LD_VF_MAP *)
2587 ((unsigned char *)savedmap +
2588 savedmap->size);
2589 }
2590 if (!found && newmap->policy[thisVf] !=
2591 MR_LD_ACCESS_HIDDEN) {
2592 doscan = 1;
2593 goto out;
2594 }
2595 newmap = (struct MR_LD_VF_MAP *)
2596 ((unsigned char *)newmap + newmap->size);
2597 }
2598
2599 newmap = new_affiliation->map;
2600 savedmap = instance->vf_affiliation->map;
2601
2602 for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) {
2603 found = 0;
2604 for (j = 0 ; j < new_affiliation->ldCount; j++) {
2605 if (savedmap->ref.targetId ==
2606 newmap->ref.targetId) {
2607 found = 1;
2608 if (savedmap->policy[thisVf] !=
2609 newmap->policy[thisVf]) {
2610 doscan = 1;
2611 goto out;
2612 }
2613 }
2614 newmap = (struct MR_LD_VF_MAP *)
2615 ((unsigned char *)newmap +
2616 newmap->size);
2617 }
2618 if (!found && savedmap->policy[thisVf] !=
2619 MR_LD_ACCESS_HIDDEN) {
2620 doscan = 1;
2621 goto out;
2622 }
2623 savedmap = (struct MR_LD_VF_MAP *)
2624 ((unsigned char *)savedmap +
2625 savedmap->size);
2626 }
2627 }
2628 out:
2629 if (doscan) {
2630 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2631 "affiliation for scsi%d\n", instance->host->host_no);
2632 memcpy(instance->vf_affiliation, new_affiliation,
2633 new_affiliation->size);
2634 retval = 1;
2635 }
2636
2637 if (new_affiliation)
2638 dma_free_coherent(&instance->pdev->dev,
2639 (MAX_LOGICAL_DRIVES + 1) *
2640 sizeof(struct MR_LD_VF_AFFILIATION),
2641 new_affiliation, new_affiliation_h);
2642 megasas_return_cmd(instance, cmd);
2643
2644 return retval;
2645 }
2646
2647 /* This function will get the current SR-IOV LD/VF affiliation */
megasas_get_ld_vf_affiliation(struct megasas_instance * instance,int initial)2648 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
2649 int initial)
2650 {
2651 int retval;
2652
2653 if (instance->PlasmaFW111)
2654 retval = megasas_get_ld_vf_affiliation_111(instance, initial);
2655 else
2656 retval = megasas_get_ld_vf_affiliation_12(instance, initial);
2657 return retval;
2658 }
2659
2660 /* This function will tell FW to start the SR-IOV heartbeat */
megasas_sriov_start_heartbeat(struct megasas_instance * instance,int initial)2661 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
2662 int initial)
2663 {
2664 struct megasas_cmd *cmd;
2665 struct megasas_dcmd_frame *dcmd;
2666 int retval = 0;
2667
2668 cmd = megasas_get_cmd(instance);
2669
2670 if (!cmd) {
2671 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_sriov_start_heartbeat: "
2672 "Failed to get cmd for scsi%d\n",
2673 instance->host->host_no);
2674 return -ENOMEM;
2675 }
2676
2677 dcmd = &cmd->frame->dcmd;
2678
2679 if (initial) {
2680 instance->hb_host_mem =
2681 dma_alloc_coherent(&instance->pdev->dev,
2682 sizeof(struct MR_CTRL_HB_HOST_MEM),
2683 &instance->hb_host_mem_h,
2684 GFP_KERNEL);
2685 if (!instance->hb_host_mem) {
2686 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate"
2687 " memory for heartbeat host memory for scsi%d\n",
2688 instance->host->host_no);
2689 retval = -ENOMEM;
2690 goto out;
2691 }
2692 }
2693
2694 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2695
2696 dcmd->mbox.s[0] = cpu_to_le16(sizeof(struct MR_CTRL_HB_HOST_MEM));
2697 dcmd->cmd = MFI_CMD_DCMD;
2698 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2699 dcmd->sge_count = 1;
2700 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2701 dcmd->timeout = 0;
2702 dcmd->pad_0 = 0;
2703 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM));
2704 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC);
2705
2706 megasas_set_dma_settings(instance, dcmd, instance->hb_host_mem_h,
2707 sizeof(struct MR_CTRL_HB_HOST_MEM));
2708
2709 dev_warn(&instance->pdev->dev, "SR-IOV: Starting heartbeat for scsi%d\n",
2710 instance->host->host_no);
2711
2712 if ((instance->adapter_type != MFI_SERIES) &&
2713 !instance->mask_interrupts)
2714 retval = megasas_issue_blocked_cmd(instance, cmd,
2715 MEGASAS_ROUTINE_WAIT_TIME_VF);
2716 else
2717 retval = megasas_issue_polled(instance, cmd);
2718
2719 if (retval) {
2720 dev_warn(&instance->pdev->dev, "SR-IOV: MR_DCMD_CTRL_SHARED_HOST"
2721 "_MEM_ALLOC DCMD %s for scsi%d\n",
2722 (dcmd->cmd_status == MFI_STAT_INVALID_STATUS) ?
2723 "timed out" : "failed", instance->host->host_no);
2724 retval = 1;
2725 }
2726
2727 out:
2728 megasas_return_cmd(instance, cmd);
2729
2730 return retval;
2731 }
2732
2733 /* Handler for SR-IOV heartbeat */
megasas_sriov_heartbeat_handler(struct timer_list * t)2734 static void megasas_sriov_heartbeat_handler(struct timer_list *t)
2735 {
2736 struct megasas_instance *instance =
2737 timer_container_of(instance, t, sriov_heartbeat_timer);
2738
2739 if (instance->hb_host_mem->HB.fwCounter !=
2740 instance->hb_host_mem->HB.driverCounter) {
2741 instance->hb_host_mem->HB.driverCounter =
2742 instance->hb_host_mem->HB.fwCounter;
2743 mod_timer(&instance->sriov_heartbeat_timer,
2744 jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
2745 } else {
2746 dev_warn(&instance->pdev->dev, "SR-IOV: Heartbeat never "
2747 "completed for scsi%d\n", instance->host->host_no);
2748 schedule_work(&instance->work_init);
2749 }
2750 }
2751
2752 /**
2753 * megasas_wait_for_outstanding - Wait for all outstanding cmds
2754 * @instance: Adapter soft state
2755 *
2756 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
2757 * complete all its outstanding commands. Returns error if one or more IOs
2758 * are pending after this time period. It also marks the controller dead.
2759 */
megasas_wait_for_outstanding(struct megasas_instance * instance)2760 static int megasas_wait_for_outstanding(struct megasas_instance *instance)
2761 {
2762 int i, sl, outstanding;
2763 u32 reset_index;
2764 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
2765 unsigned long flags;
2766 struct list_head clist_local;
2767 struct megasas_cmd *reset_cmd;
2768 u32 fw_state;
2769
2770 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2771 dev_info(&instance->pdev->dev, "%s:%d HBA is killed.\n",
2772 __func__, __LINE__);
2773 return FAILED;
2774 }
2775
2776 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2777
2778 INIT_LIST_HEAD(&clist_local);
2779 spin_lock_irqsave(&instance->hba_lock, flags);
2780 list_splice_init(&instance->internal_reset_pending_q,
2781 &clist_local);
2782 spin_unlock_irqrestore(&instance->hba_lock, flags);
2783
2784 dev_notice(&instance->pdev->dev, "HBA reset wait ...\n");
2785 for (i = 0; i < wait_time; i++) {
2786 msleep(1000);
2787 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL)
2788 break;
2789 }
2790
2791 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2792 dev_notice(&instance->pdev->dev, "reset: Stopping HBA.\n");
2793 atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2794 return FAILED;
2795 }
2796
2797 reset_index = 0;
2798 while (!list_empty(&clist_local)) {
2799 reset_cmd = list_entry((&clist_local)->next,
2800 struct megasas_cmd, list);
2801 list_del_init(&reset_cmd->list);
2802 if (reset_cmd->scmd) {
2803 reset_cmd->scmd->result = DID_REQUEUE << 16;
2804 dev_notice(&instance->pdev->dev, "%d:%p reset [%02x]\n",
2805 reset_index, reset_cmd,
2806 reset_cmd->scmd->cmnd[0]);
2807
2808 scsi_done(reset_cmd->scmd);
2809 megasas_return_cmd(instance, reset_cmd);
2810 } else if (reset_cmd->sync_cmd) {
2811 dev_notice(&instance->pdev->dev, "%p synch cmds"
2812 "reset queue\n",
2813 reset_cmd);
2814
2815 reset_cmd->cmd_status_drv = DCMD_INIT;
2816 instance->instancet->fire_cmd(instance,
2817 reset_cmd->frame_phys_addr,
2818 0, instance->reg_set);
2819 } else {
2820 dev_notice(&instance->pdev->dev, "%p unexpected"
2821 "cmds lst\n",
2822 reset_cmd);
2823 }
2824 reset_index++;
2825 }
2826
2827 return SUCCESS;
2828 }
2829
2830 for (i = 0; i < resetwaittime; i++) {
2831 outstanding = atomic_read(&instance->fw_outstanding);
2832
2833 if (!outstanding)
2834 break;
2835
2836 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2837 dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
2838 "commands to complete\n",i,outstanding);
2839 /*
2840 * Call cmd completion routine. Cmd to be
2841 * be completed directly without depending on isr.
2842 */
2843 megasas_complete_cmd_dpc((unsigned long)instance);
2844 }
2845
2846 msleep(1000);
2847 }
2848
2849 i = 0;
2850 outstanding = atomic_read(&instance->fw_outstanding);
2851 fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK;
2852
2853 if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2854 goto no_outstanding;
2855
2856 if (instance->disableOnlineCtrlReset)
2857 goto kill_hba_and_failed;
2858 do {
2859 if ((fw_state == MFI_STATE_FAULT) || atomic_read(&instance->fw_outstanding)) {
2860 dev_info(&instance->pdev->dev,
2861 "%s:%d waiting_for_outstanding: before issue OCR. FW state = 0x%x, outstanding 0x%x\n",
2862 __func__, __LINE__, fw_state, atomic_read(&instance->fw_outstanding));
2863 if (i == 3)
2864 goto kill_hba_and_failed;
2865 megasas_do_ocr(instance);
2866
2867 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2868 dev_info(&instance->pdev->dev, "%s:%d OCR failed and HBA is killed.\n",
2869 __func__, __LINE__);
2870 return FAILED;
2871 }
2872 dev_info(&instance->pdev->dev, "%s:%d waiting_for_outstanding: after issue OCR.\n",
2873 __func__, __LINE__);
2874
2875 for (sl = 0; sl < 10; sl++)
2876 msleep(500);
2877
2878 outstanding = atomic_read(&instance->fw_outstanding);
2879
2880 fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK;
2881 if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2882 goto no_outstanding;
2883 }
2884 i++;
2885 } while (i <= 3);
2886
2887 no_outstanding:
2888
2889 dev_info(&instance->pdev->dev, "%s:%d no more pending commands remain after reset handling.\n",
2890 __func__, __LINE__);
2891 return SUCCESS;
2892
2893 kill_hba_and_failed:
2894
2895 /* Reset not supported, kill adapter */
2896 dev_info(&instance->pdev->dev, "%s:%d killing adapter scsi%d"
2897 " disableOnlineCtrlReset %d fw_outstanding %d \n",
2898 __func__, __LINE__, instance->host->host_no, instance->disableOnlineCtrlReset,
2899 atomic_read(&instance->fw_outstanding));
2900 megasas_dump_pending_frames(instance);
2901 megaraid_sas_kill_hba(instance);
2902
2903 return FAILED;
2904 }
2905
2906 /**
2907 * megasas_generic_reset - Generic reset routine
2908 * @scmd: Mid-layer SCSI command
2909 *
2910 * This routine implements a generic reset handler for device, bus and host
2911 * reset requests. Device, bus and host specific reset handlers can use this
2912 * function after they do their specific tasks.
2913 */
megasas_generic_reset(struct scsi_cmnd * scmd)2914 static int megasas_generic_reset(struct scsi_cmnd *scmd)
2915 {
2916 int ret_val;
2917 struct megasas_instance *instance;
2918
2919 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2920
2921 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
2922 scmd->cmnd[0], scmd->retries);
2923
2924 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2925 dev_err(&instance->pdev->dev, "cannot recover from previous reset failures\n");
2926 return FAILED;
2927 }
2928
2929 ret_val = megasas_wait_for_outstanding(instance);
2930 if (ret_val == SUCCESS)
2931 dev_notice(&instance->pdev->dev, "reset successful\n");
2932 else
2933 dev_err(&instance->pdev->dev, "failed to do reset\n");
2934
2935 return ret_val;
2936 }
2937
2938 /**
2939 * megasas_reset_timer - quiesce the adapter if required
2940 * @scmd: scsi cmnd
2941 *
2942 * Sets the FW busy flag and reduces the host->can_queue if the
2943 * cmd has not been completed within the timeout period.
2944 */
megasas_reset_timer(struct scsi_cmnd * scmd)2945 static enum scsi_timeout_action megasas_reset_timer(struct scsi_cmnd *scmd)
2946 {
2947 struct megasas_instance *instance;
2948 unsigned long flags;
2949
2950 if (time_after(jiffies, scmd->jiffies_at_alloc +
2951 (scmd_timeout * 2) * HZ)) {
2952 return SCSI_EH_NOT_HANDLED;
2953 }
2954
2955 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2956 if (!(instance->flag & MEGASAS_FW_BUSY)) {
2957 /* FW is busy, throttle IO */
2958 spin_lock_irqsave(instance->host->host_lock, flags);
2959
2960 instance->host->can_queue = instance->throttlequeuedepth;
2961 instance->last_time = jiffies;
2962 instance->flag |= MEGASAS_FW_BUSY;
2963
2964 spin_unlock_irqrestore(instance->host->host_lock, flags);
2965 }
2966 return SCSI_EH_RESET_TIMER;
2967 }
2968
2969 /**
2970 * megasas_dump - This function will print hexdump of provided buffer.
2971 * @buf: Buffer to be dumped
2972 * @sz: Size in bytes
2973 * @format: Different formats of dumping e.g. format=n will
2974 * cause only 'n' 32 bit words to be dumped in a single
2975 * line.
2976 */
2977 inline void
megasas_dump(void * buf,int sz,int format)2978 megasas_dump(void *buf, int sz, int format)
2979 {
2980 int i;
2981 __le32 *buf_loc = (__le32 *)buf;
2982
2983 for (i = 0; i < (sz / sizeof(__le32)); i++) {
2984 if ((i % format) == 0) {
2985 if (i != 0)
2986 printk(KERN_CONT "\n");
2987 printk(KERN_CONT "%08x: ", (i * 4));
2988 }
2989 printk(KERN_CONT "%08x ", le32_to_cpu(buf_loc[i]));
2990 }
2991 printk(KERN_CONT "\n");
2992 }
2993
2994 /**
2995 * megasas_dump_reg_set - This function will print hexdump of register set
2996 * @reg_set: Register set to be dumped
2997 */
2998 inline void
megasas_dump_reg_set(void __iomem * reg_set)2999 megasas_dump_reg_set(void __iomem *reg_set)
3000 {
3001 unsigned int i, sz = 256;
3002 u32 __iomem *reg = (u32 __iomem *)reg_set;
3003
3004 for (i = 0; i < (sz / sizeof(u32)); i++)
3005 printk("%08x: %08x\n", (i * 4), readl(®[i]));
3006 }
3007
3008 /**
3009 * megasas_dump_fusion_io - This function will print key details
3010 * of SCSI IO
3011 * @scmd: SCSI command pointer of SCSI IO
3012 */
3013 void
megasas_dump_fusion_io(struct scsi_cmnd * scmd)3014 megasas_dump_fusion_io(struct scsi_cmnd *scmd)
3015 {
3016 struct megasas_cmd_fusion *cmd = megasas_priv(scmd)->cmd_priv;
3017 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
3018 struct megasas_instance *instance;
3019
3020 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3021
3022 scmd_printk(KERN_INFO, scmd,
3023 "scmd: (0x%p) retries: 0x%x allowed: 0x%x\n",
3024 scmd, scmd->retries, scmd->allowed);
3025 scsi_print_command(scmd);
3026
3027 if (cmd) {
3028 req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc;
3029 scmd_printk(KERN_INFO, scmd, "Request descriptor details:\n");
3030 scmd_printk(KERN_INFO, scmd,
3031 "RequestFlags:0x%x MSIxIndex:0x%x SMID:0x%x LMID:0x%x DevHandle:0x%x\n",
3032 req_desc->SCSIIO.RequestFlags,
3033 req_desc->SCSIIO.MSIxIndex, req_desc->SCSIIO.SMID,
3034 req_desc->SCSIIO.LMID, req_desc->SCSIIO.DevHandle);
3035
3036 printk(KERN_INFO "IO request frame:\n");
3037 megasas_dump(cmd->io_request,
3038 MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE, 8);
3039 printk(KERN_INFO "Chain frame:\n");
3040 megasas_dump(cmd->sg_frame,
3041 instance->max_chain_frame_sz, 8);
3042 }
3043
3044 }
3045
3046 /*
3047 * megasas_dump_sys_regs - This function will dump system registers through
3048 * sysfs.
3049 * @reg_set: Pointer to System register set.
3050 * @buf: Buffer to which output is to be written.
3051 * @return: Number of bytes written to buffer.
3052 */
3053 static inline ssize_t
megasas_dump_sys_regs(void __iomem * reg_set,char * buf)3054 megasas_dump_sys_regs(void __iomem *reg_set, char *buf)
3055 {
3056 unsigned int i, sz = 256;
3057 int bytes_wrote = 0;
3058 char *loc = (char *)buf;
3059 u32 __iomem *reg = (u32 __iomem *)reg_set;
3060
3061 for (i = 0; i < sz / sizeof(u32); i++) {
3062 bytes_wrote += scnprintf(loc + bytes_wrote,
3063 PAGE_SIZE - bytes_wrote,
3064 "%08x: %08x\n", (i * 4),
3065 readl(®[i]));
3066 }
3067 return bytes_wrote;
3068 }
3069
3070 /**
3071 * megasas_reset_bus_host - Bus & host reset handler entry point
3072 * @scmd: Mid-layer SCSI command
3073 */
megasas_reset_bus_host(struct scsi_cmnd * scmd)3074 static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
3075 {
3076 int ret;
3077 struct megasas_instance *instance;
3078
3079 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3080
3081 scmd_printk(KERN_INFO, scmd,
3082 "OCR is requested due to IO timeout!!\n");
3083
3084 scmd_printk(KERN_INFO, scmd,
3085 "SCSI host state: %d SCSI host busy: %d FW outstanding: %d\n",
3086 scsi_get_host_state(scmd->device->host),
3087 scsi_host_busy(scmd->device->host),
3088 atomic_read(&instance->fw_outstanding));
3089 /*
3090 * First wait for all commands to complete
3091 */
3092 if (instance->adapter_type == MFI_SERIES) {
3093 ret = megasas_generic_reset(scmd);
3094 } else {
3095 megasas_dump_fusion_io(scmd);
3096 ret = megasas_reset_fusion(scmd->device->host,
3097 SCSIIO_TIMEOUT_OCR);
3098 }
3099
3100 return ret;
3101 }
3102
3103 /**
3104 * megasas_task_abort - Issues task abort request to firmware
3105 * (supported only for fusion adapters)
3106 * @scmd: SCSI command pointer
3107 */
megasas_task_abort(struct scsi_cmnd * scmd)3108 static int megasas_task_abort(struct scsi_cmnd *scmd)
3109 {
3110 int ret;
3111 struct megasas_instance *instance;
3112
3113 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3114
3115 if (instance->adapter_type != MFI_SERIES)
3116 ret = megasas_task_abort_fusion(scmd);
3117 else {
3118 sdev_printk(KERN_NOTICE, scmd->device, "TASK ABORT not supported\n");
3119 ret = FAILED;
3120 }
3121
3122 return ret;
3123 }
3124
3125 /**
3126 * megasas_reset_target: Issues target reset request to firmware
3127 * (supported only for fusion adapters)
3128 * @scmd: SCSI command pointer
3129 */
megasas_reset_target(struct scsi_cmnd * scmd)3130 static int megasas_reset_target(struct scsi_cmnd *scmd)
3131 {
3132 int ret;
3133 struct megasas_instance *instance;
3134
3135 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3136
3137 if (instance->adapter_type != MFI_SERIES)
3138 ret = megasas_reset_target_fusion(scmd);
3139 else {
3140 sdev_printk(KERN_NOTICE, scmd->device, "TARGET RESET not supported\n");
3141 ret = FAILED;
3142 }
3143
3144 return ret;
3145 }
3146
3147 /**
3148 * megasas_bios_param - Returns disk geometry for a disk
3149 * @sdev: device handle
3150 * @unused: gendisk
3151 * @capacity: drive capacity
3152 * @geom: geometry parameters
3153 */
3154 static int
megasas_bios_param(struct scsi_device * sdev,struct gendisk * unused,sector_t capacity,int geom[])3155 megasas_bios_param(struct scsi_device *sdev, struct gendisk *unused,
3156 sector_t capacity, int geom[])
3157 {
3158 int heads;
3159 int sectors;
3160 sector_t cylinders;
3161 unsigned long tmp;
3162
3163 /* Default heads (64) & sectors (32) */
3164 heads = 64;
3165 sectors = 32;
3166
3167 tmp = heads * sectors;
3168 cylinders = capacity;
3169
3170 sector_div(cylinders, tmp);
3171
3172 /*
3173 * Handle extended translation size for logical drives > 1Gb
3174 */
3175
3176 if (capacity >= 0x200000) {
3177 heads = 255;
3178 sectors = 63;
3179 tmp = heads*sectors;
3180 cylinders = capacity;
3181 sector_div(cylinders, tmp);
3182 }
3183
3184 geom[0] = heads;
3185 geom[1] = sectors;
3186 geom[2] = cylinders;
3187
3188 return 0;
3189 }
3190
megasas_map_queues(struct Scsi_Host * shost)3191 static void megasas_map_queues(struct Scsi_Host *shost)
3192 {
3193 struct megasas_instance *instance;
3194 int qoff = 0, offset;
3195 struct blk_mq_queue_map *map;
3196
3197 instance = (struct megasas_instance *)shost->hostdata;
3198
3199 if (shost->nr_hw_queues == 1)
3200 return;
3201
3202 offset = instance->low_latency_index_start;
3203
3204 /* Setup Default hctx */
3205 map = &shost->tag_set.map[HCTX_TYPE_DEFAULT];
3206 map->nr_queues = instance->msix_vectors - offset;
3207 map->queue_offset = 0;
3208 blk_mq_map_hw_queues(map, &instance->pdev->dev, offset);
3209 qoff += map->nr_queues;
3210 offset += map->nr_queues;
3211
3212 /* we never use READ queue, so can't cheat blk-mq */
3213 shost->tag_set.map[HCTX_TYPE_READ].nr_queues = 0;
3214
3215 /* Setup Poll hctx */
3216 map = &shost->tag_set.map[HCTX_TYPE_POLL];
3217 map->nr_queues = instance->iopoll_q_count;
3218 if (map->nr_queues) {
3219 /*
3220 * The poll queue(s) doesn't have an IRQ (and hence IRQ
3221 * affinity), so use the regular blk-mq cpu mapping
3222 */
3223 map->queue_offset = qoff;
3224 blk_mq_map_queues(map);
3225 }
3226 }
3227
3228 static void megasas_aen_polling(struct work_struct *work);
3229
3230 /**
3231 * megasas_service_aen - Processes an event notification
3232 * @instance: Adapter soft state
3233 * @cmd: AEN command completed by the ISR
3234 *
3235 * For AEN, driver sends a command down to FW that is held by the FW till an
3236 * event occurs. When an event of interest occurs, FW completes the command
3237 * that it was previously holding.
3238 *
3239 * This routines sends SIGIO signal to processes that have registered with the
3240 * driver for AEN.
3241 */
3242 static void
megasas_service_aen(struct megasas_instance * instance,struct megasas_cmd * cmd)3243 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
3244 {
3245 unsigned long flags;
3246
3247 /*
3248 * Don't signal app if it is just an aborted previously registered aen
3249 */
3250 if ((!cmd->abort_aen) && (instance->unload == 0)) {
3251 spin_lock_irqsave(&poll_aen_lock, flags);
3252 megasas_poll_wait_aen = 1;
3253 spin_unlock_irqrestore(&poll_aen_lock, flags);
3254 wake_up(&megasas_poll_wait);
3255 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
3256 }
3257 else
3258 cmd->abort_aen = 0;
3259
3260 instance->aen_cmd = NULL;
3261
3262 megasas_return_cmd(instance, cmd);
3263
3264 if ((instance->unload == 0) &&
3265 ((instance->issuepend_done == 1))) {
3266 struct megasas_aen_event *ev;
3267
3268 ev = kzalloc_obj(*ev, GFP_ATOMIC);
3269 if (!ev) {
3270 dev_err(&instance->pdev->dev, "megasas_service_aen: out of memory\n");
3271 } else {
3272 ev->instance = instance;
3273 instance->ev = ev;
3274 INIT_DELAYED_WORK(&ev->hotplug_work,
3275 megasas_aen_polling);
3276 schedule_delayed_work(&ev->hotplug_work, 0);
3277 }
3278 }
3279 }
3280
3281 static ssize_t
fw_crash_buffer_store(struct device * cdev,struct device_attribute * attr,const char * buf,size_t count)3282 fw_crash_buffer_store(struct device *cdev,
3283 struct device_attribute *attr, const char *buf, size_t count)
3284 {
3285 struct Scsi_Host *shost = class_to_shost(cdev);
3286 struct megasas_instance *instance =
3287 (struct megasas_instance *) shost->hostdata;
3288 int val = 0;
3289
3290 if (kstrtoint(buf, 0, &val) != 0)
3291 return -EINVAL;
3292
3293 mutex_lock(&instance->crashdump_lock);
3294 instance->fw_crash_buffer_offset = val;
3295 mutex_unlock(&instance->crashdump_lock);
3296 return strlen(buf);
3297 }
3298
3299 static ssize_t
fw_crash_buffer_show(struct device * cdev,struct device_attribute * attr,char * buf)3300 fw_crash_buffer_show(struct device *cdev,
3301 struct device_attribute *attr, char *buf)
3302 {
3303 struct Scsi_Host *shost = class_to_shost(cdev);
3304 struct megasas_instance *instance =
3305 (struct megasas_instance *) shost->hostdata;
3306 u32 size;
3307 unsigned long dmachunk = CRASH_DMA_BUF_SIZE;
3308 unsigned long chunk_left_bytes;
3309 unsigned long src_addr;
3310 u32 buff_offset;
3311
3312 mutex_lock(&instance->crashdump_lock);
3313 buff_offset = instance->fw_crash_buffer_offset;
3314 if (!instance->crash_dump_buf ||
3315 !((instance->fw_crash_state == AVAILABLE) ||
3316 (instance->fw_crash_state == COPYING))) {
3317 dev_err(&instance->pdev->dev,
3318 "Firmware crash dump is not available\n");
3319 mutex_unlock(&instance->crashdump_lock);
3320 return -EINVAL;
3321 }
3322
3323 if (buff_offset > (instance->fw_crash_buffer_size * dmachunk)) {
3324 dev_err(&instance->pdev->dev,
3325 "Firmware crash dump offset is out of range\n");
3326 mutex_unlock(&instance->crashdump_lock);
3327 return 0;
3328 }
3329
3330 size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset;
3331 chunk_left_bytes = dmachunk - (buff_offset % dmachunk);
3332 size = (size > chunk_left_bytes) ? chunk_left_bytes : size;
3333 size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size;
3334
3335 src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] +
3336 (buff_offset % dmachunk);
3337 memcpy(buf, (void *)src_addr, size);
3338 mutex_unlock(&instance->crashdump_lock);
3339
3340 return size;
3341 }
3342
3343 static ssize_t
fw_crash_buffer_size_show(struct device * cdev,struct device_attribute * attr,char * buf)3344 fw_crash_buffer_size_show(struct device *cdev,
3345 struct device_attribute *attr, char *buf)
3346 {
3347 struct Scsi_Host *shost = class_to_shost(cdev);
3348 struct megasas_instance *instance =
3349 (struct megasas_instance *) shost->hostdata;
3350
3351 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)
3352 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE);
3353 }
3354
3355 static ssize_t
fw_crash_state_store(struct device * cdev,struct device_attribute * attr,const char * buf,size_t count)3356 fw_crash_state_store(struct device *cdev,
3357 struct device_attribute *attr, const char *buf, size_t count)
3358 {
3359 struct Scsi_Host *shost = class_to_shost(cdev);
3360 struct megasas_instance *instance =
3361 (struct megasas_instance *) shost->hostdata;
3362 int val = 0;
3363
3364 if (kstrtoint(buf, 0, &val) != 0)
3365 return -EINVAL;
3366
3367 if ((val <= AVAILABLE || val > COPY_ERROR)) {
3368 dev_err(&instance->pdev->dev, "application updates invalid "
3369 "firmware crash state\n");
3370 return -EINVAL;
3371 }
3372
3373 instance->fw_crash_state = val;
3374
3375 if ((val == COPIED) || (val == COPY_ERROR)) {
3376 mutex_lock(&instance->crashdump_lock);
3377 megasas_free_host_crash_buffer(instance);
3378 mutex_unlock(&instance->crashdump_lock);
3379 if (val == COPY_ERROR)
3380 dev_info(&instance->pdev->dev, "application failed to "
3381 "copy Firmware crash dump\n");
3382 else
3383 dev_info(&instance->pdev->dev, "Firmware crash dump "
3384 "copied successfully\n");
3385 }
3386 return strlen(buf);
3387 }
3388
3389 static ssize_t
fw_crash_state_show(struct device * cdev,struct device_attribute * attr,char * buf)3390 fw_crash_state_show(struct device *cdev,
3391 struct device_attribute *attr, char *buf)
3392 {
3393 struct Scsi_Host *shost = class_to_shost(cdev);
3394 struct megasas_instance *instance =
3395 (struct megasas_instance *) shost->hostdata;
3396
3397 return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state);
3398 }
3399
3400 static ssize_t
page_size_show(struct device * cdev,struct device_attribute * attr,char * buf)3401 page_size_show(struct device *cdev,
3402 struct device_attribute *attr, char *buf)
3403 {
3404 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1);
3405 }
3406
3407 static ssize_t
ldio_outstanding_show(struct device * cdev,struct device_attribute * attr,char * buf)3408 ldio_outstanding_show(struct device *cdev, struct device_attribute *attr,
3409 char *buf)
3410 {
3411 struct Scsi_Host *shost = class_to_shost(cdev);
3412 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3413
3414 return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->ldio_outstanding));
3415 }
3416
3417 static ssize_t
fw_cmds_outstanding_show(struct device * cdev,struct device_attribute * attr,char * buf)3418 fw_cmds_outstanding_show(struct device *cdev,
3419 struct device_attribute *attr, char *buf)
3420 {
3421 struct Scsi_Host *shost = class_to_shost(cdev);
3422 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3423
3424 return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->fw_outstanding));
3425 }
3426
3427 static ssize_t
enable_sdev_max_qd_show(struct device * cdev,struct device_attribute * attr,char * buf)3428 enable_sdev_max_qd_show(struct device *cdev,
3429 struct device_attribute *attr, char *buf)
3430 {
3431 struct Scsi_Host *shost = class_to_shost(cdev);
3432 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3433
3434 return snprintf(buf, PAGE_SIZE, "%d\n", instance->enable_sdev_max_qd);
3435 }
3436
3437 static ssize_t
enable_sdev_max_qd_store(struct device * cdev,struct device_attribute * attr,const char * buf,size_t count)3438 enable_sdev_max_qd_store(struct device *cdev,
3439 struct device_attribute *attr, const char *buf, size_t count)
3440 {
3441 struct Scsi_Host *shost = class_to_shost(cdev);
3442 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3443 u32 val = 0;
3444 bool is_target_prop;
3445 int ret_target_prop = DCMD_FAILED;
3446 struct scsi_device *sdev;
3447
3448 if (kstrtou32(buf, 0, &val) != 0) {
3449 pr_err("megasas: could not set enable_sdev_max_qd\n");
3450 return -EINVAL;
3451 }
3452
3453 mutex_lock(&instance->reset_mutex);
3454 if (val)
3455 instance->enable_sdev_max_qd = true;
3456 else
3457 instance->enable_sdev_max_qd = false;
3458
3459 shost_for_each_device(sdev, shost) {
3460 ret_target_prop = megasas_get_target_prop(instance, sdev);
3461 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
3462 megasas_set_fw_assisted_qd(sdev, is_target_prop);
3463 }
3464 mutex_unlock(&instance->reset_mutex);
3465
3466 return strlen(buf);
3467 }
3468
3469 static ssize_t
dump_system_regs_show(struct device * cdev,struct device_attribute * attr,char * buf)3470 dump_system_regs_show(struct device *cdev,
3471 struct device_attribute *attr, char *buf)
3472 {
3473 struct Scsi_Host *shost = class_to_shost(cdev);
3474 struct megasas_instance *instance =
3475 (struct megasas_instance *)shost->hostdata;
3476
3477 return megasas_dump_sys_regs(instance->reg_set, buf);
3478 }
3479
3480 static ssize_t
raid_map_id_show(struct device * cdev,struct device_attribute * attr,char * buf)3481 raid_map_id_show(struct device *cdev, struct device_attribute *attr,
3482 char *buf)
3483 {
3484 struct Scsi_Host *shost = class_to_shost(cdev);
3485 struct megasas_instance *instance =
3486 (struct megasas_instance *)shost->hostdata;
3487
3488 return snprintf(buf, PAGE_SIZE, "%ld\n",
3489 (unsigned long)instance->map_id);
3490 }
3491
3492 static DEVICE_ATTR_RW(fw_crash_buffer);
3493 static DEVICE_ATTR_RO(fw_crash_buffer_size);
3494 static DEVICE_ATTR_RW(fw_crash_state);
3495 static DEVICE_ATTR_RO(page_size);
3496 static DEVICE_ATTR_RO(ldio_outstanding);
3497 static DEVICE_ATTR_RO(fw_cmds_outstanding);
3498 static DEVICE_ATTR_RW(enable_sdev_max_qd);
3499 static DEVICE_ATTR_RO(dump_system_regs);
3500 static DEVICE_ATTR_RO(raid_map_id);
3501
3502 static struct attribute *megaraid_host_attrs[] = {
3503 &dev_attr_fw_crash_buffer_size.attr,
3504 &dev_attr_fw_crash_buffer.attr,
3505 &dev_attr_fw_crash_state.attr,
3506 &dev_attr_page_size.attr,
3507 &dev_attr_ldio_outstanding.attr,
3508 &dev_attr_fw_cmds_outstanding.attr,
3509 &dev_attr_enable_sdev_max_qd.attr,
3510 &dev_attr_dump_system_regs.attr,
3511 &dev_attr_raid_map_id.attr,
3512 NULL,
3513 };
3514
3515 ATTRIBUTE_GROUPS(megaraid_host);
3516
3517 /*
3518 * Scsi host template for megaraid_sas driver
3519 */
3520 static const struct scsi_host_template megasas_template = {
3521
3522 .module = THIS_MODULE,
3523 .name = "Avago SAS based MegaRAID driver",
3524 .proc_name = "megaraid_sas",
3525 .sdev_configure = megasas_sdev_configure,
3526 .sdev_init = megasas_sdev_init,
3527 .sdev_destroy = megasas_sdev_destroy,
3528 .queuecommand = megasas_queue_command,
3529 .eh_target_reset_handler = megasas_reset_target,
3530 .eh_abort_handler = megasas_task_abort,
3531 .eh_host_reset_handler = megasas_reset_bus_host,
3532 .eh_timed_out = megasas_reset_timer,
3533 .shost_groups = megaraid_host_groups,
3534 .bios_param = megasas_bios_param,
3535 .map_queues = megasas_map_queues,
3536 .mq_poll = megasas_blk_mq_poll,
3537 .change_queue_depth = scsi_change_queue_depth,
3538 .max_segment_size = 0xffffffff,
3539 .cmd_size = sizeof(struct megasas_cmd_priv),
3540 };
3541
3542 /**
3543 * megasas_complete_int_cmd - Completes an internal command
3544 * @instance: Adapter soft state
3545 * @cmd: Command to be completed
3546 *
3547 * The megasas_issue_blocked_cmd() function waits for a command to complete
3548 * after it issues a command. This function wakes up that waiting routine by
3549 * calling wake_up() on the wait queue.
3550 */
3551 static void
megasas_complete_int_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd)3552 megasas_complete_int_cmd(struct megasas_instance *instance,
3553 struct megasas_cmd *cmd)
3554 {
3555 if (cmd->cmd_status_drv == DCMD_INIT)
3556 cmd->cmd_status_drv =
3557 (cmd->frame->io.cmd_status == MFI_STAT_OK) ?
3558 DCMD_SUCCESS : DCMD_FAILED;
3559
3560 wake_up(&instance->int_cmd_wait_q);
3561 }
3562
3563 /**
3564 * megasas_complete_abort - Completes aborting a command
3565 * @instance: Adapter soft state
3566 * @cmd: Cmd that was issued to abort another cmd
3567 *
3568 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
3569 * after it issues an abort on a previously issued command. This function
3570 * wakes up all functions waiting on the same wait queue.
3571 */
3572 static void
megasas_complete_abort(struct megasas_instance * instance,struct megasas_cmd * cmd)3573 megasas_complete_abort(struct megasas_instance *instance,
3574 struct megasas_cmd *cmd)
3575 {
3576 if (cmd->sync_cmd) {
3577 cmd->sync_cmd = 0;
3578 cmd->cmd_status_drv = DCMD_SUCCESS;
3579 wake_up(&instance->abort_cmd_wait_q);
3580 }
3581 }
3582
3583 static void
megasas_set_ld_removed_by_fw(struct megasas_instance * instance)3584 megasas_set_ld_removed_by_fw(struct megasas_instance *instance)
3585 {
3586 uint i;
3587
3588 for (i = 0; (i < MEGASAS_MAX_LD_IDS); i++) {
3589 if (instance->ld_ids_prev[i] != 0xff &&
3590 instance->ld_ids_from_raidmap[i] == 0xff) {
3591 if (megasas_dbg_lvl & LD_PD_DEBUG)
3592 dev_info(&instance->pdev->dev,
3593 "LD target ID %d removed from RAID map\n", i);
3594 instance->ld_tgtid_status[i] = LD_TARGET_ID_DELETED;
3595 }
3596 }
3597 }
3598
3599 /**
3600 * megasas_complete_cmd - Completes a command
3601 * @instance: Adapter soft state
3602 * @cmd: Command to be completed
3603 * @alt_status: If non-zero, use this value as status to
3604 * SCSI mid-layer instead of the value returned
3605 * by the FW. This should be used if caller wants
3606 * an alternate status (as in the case of aborted
3607 * commands)
3608 */
3609 void
megasas_complete_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd,u8 alt_status)3610 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
3611 u8 alt_status)
3612 {
3613 int exception = 0;
3614 struct megasas_header *hdr = &cmd->frame->hdr;
3615 unsigned long flags;
3616 struct fusion_context *fusion = instance->ctrl_context;
3617 u32 opcode, status;
3618
3619 /* flag for the retry reset */
3620 cmd->retry_for_fw_reset = 0;
3621
3622 if (cmd->scmd)
3623 megasas_priv(cmd->scmd)->cmd_priv = NULL;
3624
3625 switch (hdr->cmd) {
3626 case MFI_CMD_INVALID:
3627 /* Some older 1068 controller FW may keep a pended
3628 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
3629 when booting the kdump kernel. Ignore this command to
3630 prevent a kernel panic on shutdown of the kdump kernel. */
3631 dev_warn(&instance->pdev->dev, "MFI_CMD_INVALID command "
3632 "completed\n");
3633 dev_warn(&instance->pdev->dev, "If you have a controller "
3634 "other than PERC5, please upgrade your firmware\n");
3635 break;
3636 case MFI_CMD_PD_SCSI_IO:
3637 case MFI_CMD_LD_SCSI_IO:
3638
3639 /*
3640 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
3641 * issued either through an IO path or an IOCTL path. If it
3642 * was via IOCTL, we will send it to internal completion.
3643 */
3644 if (cmd->sync_cmd) {
3645 cmd->sync_cmd = 0;
3646 megasas_complete_int_cmd(instance, cmd);
3647 break;
3648 }
3649 fallthrough;
3650
3651 case MFI_CMD_LD_READ:
3652 case MFI_CMD_LD_WRITE:
3653
3654 if (alt_status) {
3655 cmd->scmd->result = alt_status << 16;
3656 exception = 1;
3657 }
3658
3659 if (exception) {
3660
3661 atomic_dec(&instance->fw_outstanding);
3662
3663 scsi_dma_unmap(cmd->scmd);
3664 scsi_done(cmd->scmd);
3665 megasas_return_cmd(instance, cmd);
3666
3667 break;
3668 }
3669
3670 switch (hdr->cmd_status) {
3671
3672 case MFI_STAT_OK:
3673 cmd->scmd->result = DID_OK << 16;
3674 break;
3675
3676 case MFI_STAT_SCSI_IO_FAILED:
3677 case MFI_STAT_LD_INIT_IN_PROGRESS:
3678 if (hdr->scsi_status == 0xf0)
3679 cmd->scmd->result = (DID_ERROR << 16) | SAM_STAT_CHECK_CONDITION;
3680 else
3681 cmd->scmd->result = (DID_ERROR << 16) | hdr->scsi_status;
3682 break;
3683
3684 case MFI_STAT_SCSI_DONE_WITH_ERROR:
3685
3686 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
3687
3688 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
3689 memset(cmd->scmd->sense_buffer, 0,
3690 SCSI_SENSE_BUFFERSIZE);
3691 memcpy(cmd->scmd->sense_buffer, cmd->sense,
3692 hdr->sense_len);
3693 }
3694
3695 break;
3696
3697 case MFI_STAT_LD_OFFLINE:
3698 case MFI_STAT_DEVICE_NOT_FOUND:
3699 cmd->scmd->result = DID_BAD_TARGET << 16;
3700 break;
3701
3702 default:
3703 dev_printk(KERN_DEBUG, &instance->pdev->dev, "MFI FW status %#x\n",
3704 hdr->cmd_status);
3705 cmd->scmd->result = DID_ERROR << 16;
3706 break;
3707 }
3708
3709 atomic_dec(&instance->fw_outstanding);
3710
3711 scsi_dma_unmap(cmd->scmd);
3712 scsi_done(cmd->scmd);
3713 megasas_return_cmd(instance, cmd);
3714
3715 break;
3716
3717 case MFI_CMD_SMP:
3718 case MFI_CMD_STP:
3719 case MFI_CMD_NVME:
3720 case MFI_CMD_TOOLBOX:
3721 megasas_complete_int_cmd(instance, cmd);
3722 break;
3723
3724 case MFI_CMD_DCMD:
3725 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
3726 /* Check for LD map update */
3727 if ((opcode == MR_DCMD_LD_MAP_GET_INFO)
3728 && (cmd->frame->dcmd.mbox.b[1] == 1)) {
3729 fusion->fast_path_io = 0;
3730 spin_lock_irqsave(instance->host->host_lock, flags);
3731 status = cmd->frame->hdr.cmd_status;
3732 instance->map_update_cmd = NULL;
3733 if (status != MFI_STAT_OK) {
3734 if (status != MFI_STAT_NOT_FOUND)
3735 dev_warn(&instance->pdev->dev, "map syncfailed, status = 0x%x\n",
3736 cmd->frame->hdr.cmd_status);
3737 else {
3738 megasas_return_cmd(instance, cmd);
3739 spin_unlock_irqrestore(
3740 instance->host->host_lock,
3741 flags);
3742 break;
3743 }
3744 }
3745
3746 megasas_return_cmd(instance, cmd);
3747
3748 /*
3749 * Set fast path IO to ZERO.
3750 * Validate Map will set proper value.
3751 * Meanwhile all IOs will go as LD IO.
3752 */
3753 if (status == MFI_STAT_OK &&
3754 (MR_ValidateMapInfo(instance, (instance->map_id + 1)))) {
3755 instance->map_id++;
3756 fusion->fast_path_io = 1;
3757 } else {
3758 fusion->fast_path_io = 0;
3759 }
3760
3761 if (instance->adapter_type >= INVADER_SERIES)
3762 megasas_set_ld_removed_by_fw(instance);
3763
3764 megasas_sync_map_info(instance);
3765 spin_unlock_irqrestore(instance->host->host_lock,
3766 flags);
3767
3768 break;
3769 }
3770 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
3771 opcode == MR_DCMD_CTRL_EVENT_GET) {
3772 spin_lock_irqsave(&poll_aen_lock, flags);
3773 megasas_poll_wait_aen = 0;
3774 spin_unlock_irqrestore(&poll_aen_lock, flags);
3775 }
3776
3777 /* FW has an updated PD sequence */
3778 if ((opcode == MR_DCMD_SYSTEM_PD_MAP_GET_INFO) &&
3779 (cmd->frame->dcmd.mbox.b[0] == 1)) {
3780
3781 spin_lock_irqsave(instance->host->host_lock, flags);
3782 status = cmd->frame->hdr.cmd_status;
3783 instance->jbod_seq_cmd = NULL;
3784 megasas_return_cmd(instance, cmd);
3785
3786 if (status == MFI_STAT_OK) {
3787 instance->pd_seq_map_id++;
3788 /* Re-register a pd sync seq num cmd */
3789 if (megasas_sync_pd_seq_num(instance, true))
3790 instance->use_seqnum_jbod_fp = false;
3791 } else
3792 instance->use_seqnum_jbod_fp = false;
3793
3794 spin_unlock_irqrestore(instance->host->host_lock, flags);
3795 break;
3796 }
3797
3798 /*
3799 * See if got an event notification
3800 */
3801 if (opcode == MR_DCMD_CTRL_EVENT_WAIT)
3802 megasas_service_aen(instance, cmd);
3803 else
3804 megasas_complete_int_cmd(instance, cmd);
3805
3806 break;
3807
3808 case MFI_CMD_ABORT:
3809 /*
3810 * Cmd issued to abort another cmd returned
3811 */
3812 megasas_complete_abort(instance, cmd);
3813 break;
3814
3815 default:
3816 dev_info(&instance->pdev->dev, "Unknown command completed! [0x%X]\n",
3817 hdr->cmd);
3818 megasas_complete_int_cmd(instance, cmd);
3819 break;
3820 }
3821 }
3822
3823 /**
3824 * megasas_issue_pending_cmds_again - issue all pending cmds
3825 * in FW again because of the fw reset
3826 * @instance: Adapter soft state
3827 */
3828 static inline void
megasas_issue_pending_cmds_again(struct megasas_instance * instance)3829 megasas_issue_pending_cmds_again(struct megasas_instance *instance)
3830 {
3831 struct megasas_cmd *cmd;
3832 struct list_head clist_local;
3833 union megasas_evt_class_locale class_locale;
3834 unsigned long flags;
3835 u32 seq_num;
3836
3837 INIT_LIST_HEAD(&clist_local);
3838 spin_lock_irqsave(&instance->hba_lock, flags);
3839 list_splice_init(&instance->internal_reset_pending_q, &clist_local);
3840 spin_unlock_irqrestore(&instance->hba_lock, flags);
3841
3842 while (!list_empty(&clist_local)) {
3843 cmd = list_entry((&clist_local)->next,
3844 struct megasas_cmd, list);
3845 list_del_init(&cmd->list);
3846
3847 if (cmd->sync_cmd || cmd->scmd) {
3848 dev_notice(&instance->pdev->dev, "command %p, %p:%d"
3849 "detected to be pending while HBA reset\n",
3850 cmd, cmd->scmd, cmd->sync_cmd);
3851
3852 cmd->retry_for_fw_reset++;
3853
3854 if (cmd->retry_for_fw_reset == 3) {
3855 dev_notice(&instance->pdev->dev, "cmd %p, %p:%d"
3856 "was tried multiple times during reset."
3857 "Shutting down the HBA\n",
3858 cmd, cmd->scmd, cmd->sync_cmd);
3859 instance->instancet->disable_intr(instance);
3860 atomic_set(&instance->fw_reset_no_pci_access, 1);
3861 megaraid_sas_kill_hba(instance);
3862 return;
3863 }
3864 }
3865
3866 if (cmd->sync_cmd == 1) {
3867 if (cmd->scmd) {
3868 dev_notice(&instance->pdev->dev, "unexpected"
3869 "cmd attached to internal command!\n");
3870 }
3871 dev_notice(&instance->pdev->dev, "%p synchronous cmd"
3872 "on the internal reset queue,"
3873 "issue it again.\n", cmd);
3874 cmd->cmd_status_drv = DCMD_INIT;
3875 instance->instancet->fire_cmd(instance,
3876 cmd->frame_phys_addr,
3877 0, instance->reg_set);
3878 } else if (cmd->scmd) {
3879 dev_notice(&instance->pdev->dev, "%p scsi cmd [%02x]"
3880 "detected on the internal queue, issue again.\n",
3881 cmd, cmd->scmd->cmnd[0]);
3882
3883 atomic_inc(&instance->fw_outstanding);
3884 instance->instancet->fire_cmd(instance,
3885 cmd->frame_phys_addr,
3886 cmd->frame_count-1, instance->reg_set);
3887 } else {
3888 dev_notice(&instance->pdev->dev, "%p unexpected cmd on the"
3889 "internal reset defer list while re-issue!!\n",
3890 cmd);
3891 }
3892 }
3893
3894 if (instance->aen_cmd) {
3895 dev_notice(&instance->pdev->dev, "aen_cmd in def process\n");
3896 megasas_return_cmd(instance, instance->aen_cmd);
3897
3898 instance->aen_cmd = NULL;
3899 }
3900
3901 /*
3902 * Initiate AEN (Asynchronous Event Notification)
3903 */
3904 seq_num = instance->last_seq_num;
3905 class_locale.members.reserved = 0;
3906 class_locale.members.locale = MR_EVT_LOCALE_ALL;
3907 class_locale.members.class = MR_EVT_CLASS_DEBUG;
3908
3909 megasas_register_aen(instance, seq_num, class_locale.word);
3910 }
3911
3912 /*
3913 * Move the internal reset pending commands to a deferred queue.
3914 *
3915 * We move the commands pending at internal reset time to a
3916 * pending queue. This queue would be flushed after successful
3917 * completion of the internal reset sequence. if the internal reset
3918 * did not complete in time, the kernel reset handler would flush
3919 * these commands.
3920 */
3921 static void
megasas_internal_reset_defer_cmds(struct megasas_instance * instance)3922 megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
3923 {
3924 struct megasas_cmd *cmd;
3925 int i;
3926 u16 max_cmd = instance->max_fw_cmds;
3927 u32 defer_index;
3928 unsigned long flags;
3929
3930 defer_index = 0;
3931 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
3932 for (i = 0; i < max_cmd; i++) {
3933 cmd = instance->cmd_list[i];
3934 if (cmd->sync_cmd == 1 || cmd->scmd) {
3935 dev_notice(&instance->pdev->dev, "moving cmd[%d]:%p:%d:%p"
3936 "on the defer queue as internal\n",
3937 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
3938
3939 if (!list_empty(&cmd->list)) {
3940 dev_notice(&instance->pdev->dev, "ERROR while"
3941 " moving this cmd:%p, %d %p, it was"
3942 "discovered on some list?\n",
3943 cmd, cmd->sync_cmd, cmd->scmd);
3944
3945 list_del_init(&cmd->list);
3946 }
3947 defer_index++;
3948 list_add_tail(&cmd->list,
3949 &instance->internal_reset_pending_q);
3950 }
3951 }
3952 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
3953 }
3954
3955
3956 static void
process_fw_state_change_wq(struct work_struct * work)3957 process_fw_state_change_wq(struct work_struct *work)
3958 {
3959 struct megasas_instance *instance =
3960 container_of(work, struct megasas_instance, work_init);
3961 u32 wait;
3962 unsigned long flags;
3963
3964 if (atomic_read(&instance->adprecovery) != MEGASAS_ADPRESET_SM_INFAULT) {
3965 dev_notice(&instance->pdev->dev, "error, recovery st %x\n",
3966 atomic_read(&instance->adprecovery));
3967 return ;
3968 }
3969
3970 if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
3971 dev_notice(&instance->pdev->dev, "FW detected to be in fault"
3972 "state, restarting it...\n");
3973
3974 instance->instancet->disable_intr(instance);
3975 atomic_set(&instance->fw_outstanding, 0);
3976
3977 atomic_set(&instance->fw_reset_no_pci_access, 1);
3978 instance->instancet->adp_reset(instance, instance->reg_set);
3979 atomic_set(&instance->fw_reset_no_pci_access, 0);
3980
3981 dev_notice(&instance->pdev->dev, "FW restarted successfully,"
3982 "initiating next stage...\n");
3983
3984 dev_notice(&instance->pdev->dev, "HBA recovery state machine,"
3985 "state 2 starting...\n");
3986
3987 /* waiting for about 20 second before start the second init */
3988 for (wait = 0; wait < 30; wait++) {
3989 msleep(1000);
3990 }
3991
3992 if (megasas_transition_to_ready(instance, 1)) {
3993 dev_notice(&instance->pdev->dev, "adapter not ready\n");
3994
3995 atomic_set(&instance->fw_reset_no_pci_access, 1);
3996 megaraid_sas_kill_hba(instance);
3997 return ;
3998 }
3999
4000 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
4001 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
4002 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
4003 ) {
4004 *instance->consumer = *instance->producer;
4005 } else {
4006 *instance->consumer = 0;
4007 *instance->producer = 0;
4008 }
4009
4010 megasas_issue_init_mfi(instance);
4011
4012 spin_lock_irqsave(&instance->hba_lock, flags);
4013 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
4014 spin_unlock_irqrestore(&instance->hba_lock, flags);
4015 instance->instancet->enable_intr(instance);
4016
4017 megasas_issue_pending_cmds_again(instance);
4018 instance->issuepend_done = 1;
4019 }
4020 }
4021
4022 /**
4023 * megasas_deplete_reply_queue - Processes all completed commands
4024 * @instance: Adapter soft state
4025 * @alt_status: Alternate status to be returned to
4026 * SCSI mid-layer instead of the status
4027 * returned by the FW
4028 * Note: this must be called with hba lock held
4029 */
4030 static int
megasas_deplete_reply_queue(struct megasas_instance * instance,u8 alt_status)4031 megasas_deplete_reply_queue(struct megasas_instance *instance,
4032 u8 alt_status)
4033 {
4034 u32 mfiStatus;
4035 u32 fw_state;
4036
4037 if (instance->instancet->check_reset(instance, instance->reg_set) == 1)
4038 return IRQ_HANDLED;
4039
4040 mfiStatus = instance->instancet->clear_intr(instance);
4041 if (mfiStatus == 0) {
4042 /* Hardware may not set outbound_intr_status in MSI-X mode */
4043 if (!instance->msix_vectors)
4044 return IRQ_NONE;
4045 }
4046
4047 instance->mfiStatus = mfiStatus;
4048
4049 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
4050 fw_state = instance->instancet->read_fw_status_reg(
4051 instance) & MFI_STATE_MASK;
4052
4053 if (fw_state != MFI_STATE_FAULT) {
4054 dev_notice(&instance->pdev->dev, "fw state:%x\n",
4055 fw_state);
4056 }
4057
4058 if ((fw_state == MFI_STATE_FAULT) &&
4059 (instance->disableOnlineCtrlReset == 0)) {
4060 dev_notice(&instance->pdev->dev, "wait adp restart\n");
4061
4062 if ((instance->pdev->device ==
4063 PCI_DEVICE_ID_LSI_SAS1064R) ||
4064 (instance->pdev->device ==
4065 PCI_DEVICE_ID_DELL_PERC5) ||
4066 (instance->pdev->device ==
4067 PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
4068
4069 *instance->consumer =
4070 cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
4071 }
4072
4073
4074 instance->instancet->disable_intr(instance);
4075 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
4076 instance->issuepend_done = 0;
4077
4078 atomic_set(&instance->fw_outstanding, 0);
4079 megasas_internal_reset_defer_cmds(instance);
4080
4081 dev_notice(&instance->pdev->dev, "fwState=%x, stage:%d\n",
4082 fw_state, atomic_read(&instance->adprecovery));
4083
4084 schedule_work(&instance->work_init);
4085 return IRQ_HANDLED;
4086
4087 } else {
4088 dev_notice(&instance->pdev->dev, "fwstate:%x, dis_OCR=%x\n",
4089 fw_state, instance->disableOnlineCtrlReset);
4090 }
4091 }
4092
4093 tasklet_schedule(&instance->isr_tasklet);
4094 return IRQ_HANDLED;
4095 }
4096
4097 /**
4098 * megasas_isr - isr entry point
4099 * @irq: IRQ number
4100 * @devp: IRQ context address
4101 */
megasas_isr(int irq,void * devp)4102 static irqreturn_t megasas_isr(int irq, void *devp)
4103 {
4104 struct megasas_irq_context *irq_context = devp;
4105 struct megasas_instance *instance = irq_context->instance;
4106 unsigned long flags;
4107 irqreturn_t rc;
4108
4109 if (atomic_read(&instance->fw_reset_no_pci_access))
4110 return IRQ_HANDLED;
4111
4112 spin_lock_irqsave(&instance->hba_lock, flags);
4113 rc = megasas_deplete_reply_queue(instance, DID_OK);
4114 spin_unlock_irqrestore(&instance->hba_lock, flags);
4115
4116 return rc;
4117 }
4118
4119 /**
4120 * megasas_transition_to_ready - Move the FW to READY state
4121 * @instance: Adapter soft state
4122 * @ocr: Adapter reset state
4123 *
4124 * During the initialization, FW passes can potentially be in any one of
4125 * several possible states. If the FW in operational, waiting-for-handshake
4126 * states, driver must take steps to bring it to ready state. Otherwise, it
4127 * has to wait for the ready state.
4128 */
4129 int
megasas_transition_to_ready(struct megasas_instance * instance,int ocr)4130 megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
4131 {
4132 int i;
4133 u8 max_wait;
4134 u32 fw_state;
4135 u32 abs_state, curr_abs_state;
4136
4137 abs_state = instance->instancet->read_fw_status_reg(instance);
4138 fw_state = abs_state & MFI_STATE_MASK;
4139
4140 if (fw_state != MFI_STATE_READY)
4141 dev_info(&instance->pdev->dev, "Waiting for FW to come to ready"
4142 " state\n");
4143
4144 while (fw_state != MFI_STATE_READY) {
4145
4146 switch (fw_state) {
4147
4148 case MFI_STATE_FAULT:
4149 dev_printk(KERN_ERR, &instance->pdev->dev,
4150 "FW in FAULT state, Fault code:0x%x subcode:0x%x func:%s\n",
4151 abs_state & MFI_STATE_FAULT_CODE,
4152 abs_state & MFI_STATE_FAULT_SUBCODE, __func__);
4153 if (ocr) {
4154 max_wait = MEGASAS_RESET_WAIT_TIME;
4155 break;
4156 } else {
4157 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4158 megasas_dump_reg_set(instance->reg_set);
4159 return -ENODEV;
4160 }
4161
4162 case MFI_STATE_WAIT_HANDSHAKE:
4163 /*
4164 * Set the CLR bit in inbound doorbell
4165 */
4166 if ((instance->pdev->device ==
4167 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4168 (instance->pdev->device ==
4169 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4170 (instance->adapter_type != MFI_SERIES))
4171 writel(
4172 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
4173 &instance->reg_set->doorbell);
4174 else
4175 writel(
4176 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
4177 &instance->reg_set->inbound_doorbell);
4178
4179 max_wait = MEGASAS_RESET_WAIT_TIME;
4180 break;
4181
4182 case MFI_STATE_BOOT_MESSAGE_PENDING:
4183 if ((instance->pdev->device ==
4184 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4185 (instance->pdev->device ==
4186 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4187 (instance->adapter_type != MFI_SERIES))
4188 writel(MFI_INIT_HOTPLUG,
4189 &instance->reg_set->doorbell);
4190 else
4191 writel(MFI_INIT_HOTPLUG,
4192 &instance->reg_set->inbound_doorbell);
4193
4194 max_wait = MEGASAS_RESET_WAIT_TIME;
4195 break;
4196
4197 case MFI_STATE_OPERATIONAL:
4198 /*
4199 * Bring it to READY state; assuming max wait 10 secs
4200 */
4201 instance->instancet->disable_intr(instance);
4202 if ((instance->pdev->device ==
4203 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4204 (instance->pdev->device ==
4205 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4206 (instance->adapter_type != MFI_SERIES)) {
4207 writel(MFI_RESET_FLAGS,
4208 &instance->reg_set->doorbell);
4209
4210 if (instance->adapter_type != MFI_SERIES) {
4211 for (i = 0; i < (10 * 1000); i += 20) {
4212 if (megasas_readl(
4213 instance,
4214 &instance->
4215 reg_set->
4216 doorbell) & 1)
4217 msleep(20);
4218 else
4219 break;
4220 }
4221 }
4222 } else
4223 writel(MFI_RESET_FLAGS,
4224 &instance->reg_set->inbound_doorbell);
4225
4226 max_wait = MEGASAS_RESET_WAIT_TIME;
4227 break;
4228
4229 case MFI_STATE_UNDEFINED:
4230 /*
4231 * This state should not last for more than 2 seconds
4232 */
4233 max_wait = MEGASAS_RESET_WAIT_TIME;
4234 break;
4235
4236 case MFI_STATE_BB_INIT:
4237 max_wait = MEGASAS_RESET_WAIT_TIME;
4238 break;
4239
4240 case MFI_STATE_FW_INIT:
4241 max_wait = MEGASAS_RESET_WAIT_TIME;
4242 break;
4243
4244 case MFI_STATE_FW_INIT_2:
4245 max_wait = MEGASAS_RESET_WAIT_TIME;
4246 break;
4247
4248 case MFI_STATE_DEVICE_SCAN:
4249 max_wait = MEGASAS_RESET_WAIT_TIME;
4250 break;
4251
4252 case MFI_STATE_FLUSH_CACHE:
4253 max_wait = MEGASAS_RESET_WAIT_TIME;
4254 break;
4255
4256 default:
4257 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Unknown state 0x%x\n",
4258 fw_state);
4259 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4260 megasas_dump_reg_set(instance->reg_set);
4261 return -ENODEV;
4262 }
4263
4264 /*
4265 * The cur_state should not last for more than max_wait secs
4266 */
4267 for (i = 0; i < max_wait * 50; i++) {
4268 curr_abs_state = instance->instancet->
4269 read_fw_status_reg(instance);
4270
4271 if (abs_state == curr_abs_state) {
4272 msleep(20);
4273 } else
4274 break;
4275 }
4276
4277 /*
4278 * Return error if fw_state hasn't changed after max_wait
4279 */
4280 if (curr_abs_state == abs_state) {
4281 dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW state [%d] hasn't changed "
4282 "in %d secs\n", fw_state, max_wait);
4283 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4284 megasas_dump_reg_set(instance->reg_set);
4285 return -ENODEV;
4286 }
4287
4288 abs_state = curr_abs_state;
4289 fw_state = curr_abs_state & MFI_STATE_MASK;
4290 }
4291 dev_info(&instance->pdev->dev, "FW now in Ready state\n");
4292
4293 return 0;
4294 }
4295
4296 /**
4297 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool
4298 * @instance: Adapter soft state
4299 */
megasas_teardown_frame_pool(struct megasas_instance * instance)4300 static void megasas_teardown_frame_pool(struct megasas_instance *instance)
4301 {
4302 int i;
4303 u16 max_cmd = instance->max_mfi_cmds;
4304 struct megasas_cmd *cmd;
4305
4306 if (!instance->frame_dma_pool)
4307 return;
4308
4309 /*
4310 * Return all frames to pool
4311 */
4312 for (i = 0; i < max_cmd; i++) {
4313
4314 cmd = instance->cmd_list[i];
4315
4316 if (cmd->frame)
4317 dma_pool_free(instance->frame_dma_pool, cmd->frame,
4318 cmd->frame_phys_addr);
4319
4320 if (cmd->sense)
4321 dma_pool_free(instance->sense_dma_pool, cmd->sense,
4322 cmd->sense_phys_addr);
4323 }
4324
4325 /*
4326 * Now destroy the pool itself
4327 */
4328 dma_pool_destroy(instance->frame_dma_pool);
4329 dma_pool_destroy(instance->sense_dma_pool);
4330
4331 instance->frame_dma_pool = NULL;
4332 instance->sense_dma_pool = NULL;
4333 }
4334
4335 /**
4336 * megasas_create_frame_pool - Creates DMA pool for cmd frames
4337 * @instance: Adapter soft state
4338 *
4339 * Each command packet has an embedded DMA memory buffer that is used for
4340 * filling MFI frame and the SG list that immediately follows the frame. This
4341 * function creates those DMA memory buffers for each command packet by using
4342 * PCI pool facility.
4343 */
megasas_create_frame_pool(struct megasas_instance * instance)4344 static int megasas_create_frame_pool(struct megasas_instance *instance)
4345 {
4346 int i;
4347 u16 max_cmd;
4348 u32 frame_count;
4349 struct megasas_cmd *cmd;
4350
4351 max_cmd = instance->max_mfi_cmds;
4352
4353 /*
4354 * For MFI controllers.
4355 * max_num_sge = 60
4356 * max_sge_sz = 16 byte (sizeof megasas_sge_skinny)
4357 * Total 960 byte (15 MFI frame of 64 byte)
4358 *
4359 * Fusion adapter require only 3 extra frame.
4360 * max_num_sge = 16 (defined as MAX_IOCTL_SGE)
4361 * max_sge_sz = 12 byte (sizeof megasas_sge64)
4362 * Total 192 byte (3 MFI frame of 64 byte)
4363 */
4364 frame_count = (instance->adapter_type == MFI_SERIES) ?
4365 (15 + 1) : (3 + 1);
4366 instance->mfi_frame_size = MEGAMFI_FRAME_SIZE * frame_count;
4367 /*
4368 * Use DMA pool facility provided by PCI layer
4369 */
4370 instance->frame_dma_pool = dma_pool_create("megasas frame pool",
4371 &instance->pdev->dev,
4372 instance->mfi_frame_size, 256, 0);
4373
4374 if (!instance->frame_dma_pool) {
4375 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup frame pool\n");
4376 return -ENOMEM;
4377 }
4378
4379 instance->sense_dma_pool = dma_pool_create("megasas sense pool",
4380 &instance->pdev->dev, 128,
4381 4, 0);
4382
4383 if (!instance->sense_dma_pool) {
4384 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup sense pool\n");
4385
4386 dma_pool_destroy(instance->frame_dma_pool);
4387 instance->frame_dma_pool = NULL;
4388
4389 return -ENOMEM;
4390 }
4391
4392 /*
4393 * Allocate and attach a frame to each of the commands in cmd_list.
4394 * By making cmd->index as the context instead of the &cmd, we can
4395 * always use 32bit context regardless of the architecture
4396 */
4397 for (i = 0; i < max_cmd; i++) {
4398
4399 cmd = instance->cmd_list[i];
4400
4401 cmd->frame = dma_pool_zalloc(instance->frame_dma_pool,
4402 GFP_KERNEL, &cmd->frame_phys_addr);
4403
4404 cmd->sense = dma_pool_alloc(instance->sense_dma_pool,
4405 GFP_KERNEL, &cmd->sense_phys_addr);
4406
4407 /*
4408 * megasas_teardown_frame_pool() takes care of freeing
4409 * whatever has been allocated
4410 */
4411 if (!cmd->frame || !cmd->sense) {
4412 dev_printk(KERN_DEBUG, &instance->pdev->dev, "dma_pool_alloc failed\n");
4413 megasas_teardown_frame_pool(instance);
4414 return -ENOMEM;
4415 }
4416
4417 cmd->frame->io.context = cpu_to_le32(cmd->index);
4418 cmd->frame->io.pad_0 = 0;
4419 if ((instance->adapter_type == MFI_SERIES) && reset_devices)
4420 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
4421 }
4422
4423 return 0;
4424 }
4425
4426 /**
4427 * megasas_free_cmds - Free all the cmds in the free cmd pool
4428 * @instance: Adapter soft state
4429 */
megasas_free_cmds(struct megasas_instance * instance)4430 void megasas_free_cmds(struct megasas_instance *instance)
4431 {
4432 int i;
4433
4434 /* First free the MFI frame pool */
4435 megasas_teardown_frame_pool(instance);
4436
4437 /* Free all the commands in the cmd_list */
4438 for (i = 0; i < instance->max_mfi_cmds; i++)
4439
4440 kfree(instance->cmd_list[i]);
4441
4442 /* Free the cmd_list buffer itself */
4443 kfree(instance->cmd_list);
4444 instance->cmd_list = NULL;
4445
4446 INIT_LIST_HEAD(&instance->cmd_pool);
4447 }
4448
4449 /**
4450 * megasas_alloc_cmds - Allocates the command packets
4451 * @instance: Adapter soft state
4452 *
4453 * Each command that is issued to the FW, whether IO commands from the OS or
4454 * internal commands like IOCTLs, are wrapped in local data structure called
4455 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
4456 * the FW.
4457 *
4458 * Each frame has a 32-bit field called context (tag). This context is used
4459 * to get back the megasas_cmd from the frame when a frame gets completed in
4460 * the ISR. Typically the address of the megasas_cmd itself would be used as
4461 * the context. But we wanted to keep the differences between 32 and 64 bit
4462 * systems to the mininum. We always use 32 bit integers for the context. In
4463 * this driver, the 32 bit values are the indices into an array cmd_list.
4464 * This array is used only to look up the megasas_cmd given the context. The
4465 * free commands themselves are maintained in a linked list called cmd_pool.
4466 */
megasas_alloc_cmds(struct megasas_instance * instance)4467 int megasas_alloc_cmds(struct megasas_instance *instance)
4468 {
4469 int i;
4470 int j;
4471 u16 max_cmd;
4472 struct megasas_cmd *cmd;
4473
4474 max_cmd = instance->max_mfi_cmds;
4475
4476 /*
4477 * instance->cmd_list is an array of struct megasas_cmd pointers.
4478 * Allocate the dynamic array first and then allocate individual
4479 * commands.
4480 */
4481 instance->cmd_list = kzalloc_objs(struct megasas_cmd *, max_cmd);
4482
4483 if (!instance->cmd_list) {
4484 dev_printk(KERN_DEBUG, &instance->pdev->dev, "out of memory\n");
4485 return -ENOMEM;
4486 }
4487
4488 for (i = 0; i < max_cmd; i++) {
4489 instance->cmd_list[i] = kmalloc_obj(struct megasas_cmd);
4490
4491 if (!instance->cmd_list[i]) {
4492
4493 for (j = 0; j < i; j++)
4494 kfree(instance->cmd_list[j]);
4495
4496 kfree(instance->cmd_list);
4497 instance->cmd_list = NULL;
4498
4499 return -ENOMEM;
4500 }
4501 }
4502
4503 for (i = 0; i < max_cmd; i++) {
4504 cmd = instance->cmd_list[i];
4505 memset(cmd, 0, sizeof(struct megasas_cmd));
4506 cmd->index = i;
4507 cmd->scmd = NULL;
4508 cmd->instance = instance;
4509
4510 list_add_tail(&cmd->list, &instance->cmd_pool);
4511 }
4512
4513 /*
4514 * Create a frame pool and assign one frame to each cmd
4515 */
4516 if (megasas_create_frame_pool(instance)) {
4517 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error creating frame DMA pool\n");
4518 megasas_free_cmds(instance);
4519 return -ENOMEM;
4520 }
4521
4522 return 0;
4523 }
4524
4525 /*
4526 * dcmd_timeout_ocr_possible - Check if OCR is possible based on Driver/FW state.
4527 * @instance: Adapter soft state
4528 *
4529 * Return 0 for only Fusion adapter, if driver load/unload is not in progress
4530 * or FW is not under OCR.
4531 */
4532 inline int
dcmd_timeout_ocr_possible(struct megasas_instance * instance)4533 dcmd_timeout_ocr_possible(struct megasas_instance *instance) {
4534
4535 if (instance->adapter_type == MFI_SERIES)
4536 return KILL_ADAPTER;
4537 else if (instance->unload ||
4538 test_bit(MEGASAS_FUSION_OCR_NOT_POSSIBLE,
4539 &instance->reset_flags))
4540 return IGNORE_TIMEOUT;
4541 else
4542 return INITIATE_OCR;
4543 }
4544
4545 static void
megasas_get_pd_info(struct megasas_instance * instance,struct scsi_device * sdev)4546 megasas_get_pd_info(struct megasas_instance *instance, struct scsi_device *sdev)
4547 {
4548 int ret;
4549 struct megasas_cmd *cmd;
4550 struct megasas_dcmd_frame *dcmd;
4551
4552 struct MR_PRIV_DEVICE *mr_device_priv_data;
4553 u16 device_id = 0;
4554
4555 device_id = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + sdev->id;
4556 cmd = megasas_get_cmd(instance);
4557
4558 if (!cmd) {
4559 dev_err(&instance->pdev->dev, "Failed to get cmd %s\n", __func__);
4560 return;
4561 }
4562
4563 dcmd = &cmd->frame->dcmd;
4564
4565 memset(instance->pd_info, 0, sizeof(*instance->pd_info));
4566 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4567
4568 dcmd->mbox.s[0] = cpu_to_le16(device_id);
4569 dcmd->cmd = MFI_CMD_DCMD;
4570 dcmd->cmd_status = 0xFF;
4571 dcmd->sge_count = 1;
4572 dcmd->flags = MFI_FRAME_DIR_READ;
4573 dcmd->timeout = 0;
4574 dcmd->pad_0 = 0;
4575 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_PD_INFO));
4576 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_GET_INFO);
4577
4578 megasas_set_dma_settings(instance, dcmd, instance->pd_info_h,
4579 sizeof(struct MR_PD_INFO));
4580
4581 if ((instance->adapter_type != MFI_SERIES) &&
4582 !instance->mask_interrupts)
4583 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4584 else
4585 ret = megasas_issue_polled(instance, cmd);
4586
4587 switch (ret) {
4588 case DCMD_SUCCESS:
4589 mr_device_priv_data = sdev->hostdata;
4590 le16_to_cpus((u16 *)&instance->pd_info->state.ddf.pdType);
4591 mr_device_priv_data->interface_type =
4592 instance->pd_info->state.ddf.pdType.intf;
4593 break;
4594
4595 case DCMD_TIMEOUT:
4596
4597 switch (dcmd_timeout_ocr_possible(instance)) {
4598 case INITIATE_OCR:
4599 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4600 mutex_unlock(&instance->reset_mutex);
4601 megasas_reset_fusion(instance->host,
4602 MFI_IO_TIMEOUT_OCR);
4603 mutex_lock(&instance->reset_mutex);
4604 break;
4605 case KILL_ADAPTER:
4606 megaraid_sas_kill_hba(instance);
4607 break;
4608 case IGNORE_TIMEOUT:
4609 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4610 __func__, __LINE__);
4611 break;
4612 }
4613
4614 break;
4615 }
4616
4617 if (ret != DCMD_TIMEOUT)
4618 megasas_return_cmd(instance, cmd);
4619
4620 return;
4621 }
4622 /*
4623 * megasas_get_pd_list_info - Returns FW's pd_list structure
4624 * @instance: Adapter soft state
4625 * @pd_list: pd_list structure
4626 *
4627 * Issues an internal command (DCMD) to get the FW's controller PD
4628 * list structure. This information is mainly used to find out SYSTEM
4629 * supported by the FW.
4630 */
4631 static int
megasas_get_pd_list(struct megasas_instance * instance)4632 megasas_get_pd_list(struct megasas_instance *instance)
4633 {
4634 int ret = 0, pd_index = 0;
4635 struct megasas_cmd *cmd;
4636 struct megasas_dcmd_frame *dcmd;
4637 struct MR_PD_LIST *ci;
4638 struct MR_PD_ADDRESS *pd_addr;
4639
4640 if (instance->pd_list_not_supported) {
4641 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4642 "not supported by firmware\n");
4643 return ret;
4644 }
4645
4646 ci = instance->pd_list_buf;
4647
4648 cmd = megasas_get_cmd(instance);
4649
4650 if (!cmd) {
4651 dev_printk(KERN_DEBUG, &instance->pdev->dev, "(get_pd_list): Failed to get cmd\n");
4652 return -ENOMEM;
4653 }
4654
4655 dcmd = &cmd->frame->dcmd;
4656
4657 memset(ci, 0, sizeof(*ci));
4658 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4659
4660 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
4661 dcmd->mbox.b[1] = 0;
4662 dcmd->cmd = MFI_CMD_DCMD;
4663 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4664 dcmd->sge_count = 1;
4665 dcmd->flags = MFI_FRAME_DIR_READ;
4666 dcmd->timeout = 0;
4667 dcmd->pad_0 = 0;
4668 dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
4669 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY);
4670
4671 megasas_set_dma_settings(instance, dcmd, instance->pd_list_buf_h,
4672 (MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)));
4673
4674 if ((instance->adapter_type != MFI_SERIES) &&
4675 !instance->mask_interrupts)
4676 ret = megasas_issue_blocked_cmd(instance, cmd,
4677 MFI_IO_TIMEOUT_SECS);
4678 else
4679 ret = megasas_issue_polled(instance, cmd);
4680
4681 switch (ret) {
4682 case DCMD_FAILED:
4683 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4684 "failed/not supported by firmware\n");
4685
4686 if (instance->adapter_type != MFI_SERIES)
4687 megaraid_sas_kill_hba(instance);
4688 else
4689 instance->pd_list_not_supported = 1;
4690 break;
4691 case DCMD_TIMEOUT:
4692
4693 switch (dcmd_timeout_ocr_possible(instance)) {
4694 case INITIATE_OCR:
4695 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4696 /*
4697 * DCMD failed from AEN path.
4698 * AEN path already hold reset_mutex to avoid PCI access
4699 * while OCR is in progress.
4700 */
4701 mutex_unlock(&instance->reset_mutex);
4702 megasas_reset_fusion(instance->host,
4703 MFI_IO_TIMEOUT_OCR);
4704 mutex_lock(&instance->reset_mutex);
4705 break;
4706 case KILL_ADAPTER:
4707 megaraid_sas_kill_hba(instance);
4708 break;
4709 case IGNORE_TIMEOUT:
4710 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d \n",
4711 __func__, __LINE__);
4712 break;
4713 }
4714
4715 break;
4716
4717 case DCMD_SUCCESS:
4718 pd_addr = ci->addr;
4719 if (megasas_dbg_lvl & LD_PD_DEBUG)
4720 dev_info(&instance->pdev->dev, "%s, sysPD count: 0x%x\n",
4721 __func__, le32_to_cpu(ci->count));
4722
4723 if ((le32_to_cpu(ci->count) >
4724 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL)))
4725 break;
4726
4727 memset(instance->local_pd_list, 0,
4728 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
4729
4730 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) {
4731 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid =
4732 le16_to_cpu(pd_addr->deviceId);
4733 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType =
4734 pd_addr->scsiDevType;
4735 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState =
4736 MR_PD_STATE_SYSTEM;
4737 if (megasas_dbg_lvl & LD_PD_DEBUG)
4738 dev_info(&instance->pdev->dev,
4739 "PD%d: targetID: 0x%03x deviceType:0x%x\n",
4740 pd_index, le16_to_cpu(pd_addr->deviceId),
4741 pd_addr->scsiDevType);
4742 pd_addr++;
4743 }
4744
4745 memcpy(instance->pd_list, instance->local_pd_list,
4746 sizeof(instance->pd_list));
4747 break;
4748
4749 }
4750
4751 if (ret != DCMD_TIMEOUT)
4752 megasas_return_cmd(instance, cmd);
4753
4754 return ret;
4755 }
4756
4757 /*
4758 * megasas_get_ld_list_info - Returns FW's ld_list structure
4759 * @instance: Adapter soft state
4760 * @ld_list: ld_list structure
4761 *
4762 * Issues an internal command (DCMD) to get the FW's controller PD
4763 * list structure. This information is mainly used to find out SYSTEM
4764 * supported by the FW.
4765 */
4766 static int
megasas_get_ld_list(struct megasas_instance * instance)4767 megasas_get_ld_list(struct megasas_instance *instance)
4768 {
4769 int ret = 0, ld_index = 0, ids = 0;
4770 struct megasas_cmd *cmd;
4771 struct megasas_dcmd_frame *dcmd;
4772 struct MR_LD_LIST *ci;
4773 dma_addr_t ci_h = 0;
4774 u32 ld_count;
4775
4776 ci = instance->ld_list_buf;
4777 ci_h = instance->ld_list_buf_h;
4778
4779 cmd = megasas_get_cmd(instance);
4780
4781 if (!cmd) {
4782 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_list: Failed to get cmd\n");
4783 return -ENOMEM;
4784 }
4785
4786 dcmd = &cmd->frame->dcmd;
4787
4788 memset(ci, 0, sizeof(*ci));
4789 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4790
4791 if (instance->supportmax256vd)
4792 dcmd->mbox.b[0] = 1;
4793 dcmd->cmd = MFI_CMD_DCMD;
4794 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4795 dcmd->sge_count = 1;
4796 dcmd->flags = MFI_FRAME_DIR_READ;
4797 dcmd->timeout = 0;
4798 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST));
4799 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST);
4800 dcmd->pad_0 = 0;
4801
4802 megasas_set_dma_settings(instance, dcmd, ci_h,
4803 sizeof(struct MR_LD_LIST));
4804
4805 if ((instance->adapter_type != MFI_SERIES) &&
4806 !instance->mask_interrupts)
4807 ret = megasas_issue_blocked_cmd(instance, cmd,
4808 MFI_IO_TIMEOUT_SECS);
4809 else
4810 ret = megasas_issue_polled(instance, cmd);
4811
4812 ld_count = le32_to_cpu(ci->ldCount);
4813
4814 switch (ret) {
4815 case DCMD_FAILED:
4816 megaraid_sas_kill_hba(instance);
4817 break;
4818 case DCMD_TIMEOUT:
4819
4820 switch (dcmd_timeout_ocr_possible(instance)) {
4821 case INITIATE_OCR:
4822 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4823 /*
4824 * DCMD failed from AEN path.
4825 * AEN path already hold reset_mutex to avoid PCI access
4826 * while OCR is in progress.
4827 */
4828 mutex_unlock(&instance->reset_mutex);
4829 megasas_reset_fusion(instance->host,
4830 MFI_IO_TIMEOUT_OCR);
4831 mutex_lock(&instance->reset_mutex);
4832 break;
4833 case KILL_ADAPTER:
4834 megaraid_sas_kill_hba(instance);
4835 break;
4836 case IGNORE_TIMEOUT:
4837 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4838 __func__, __LINE__);
4839 break;
4840 }
4841
4842 break;
4843
4844 case DCMD_SUCCESS:
4845 if (megasas_dbg_lvl & LD_PD_DEBUG)
4846 dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n",
4847 __func__, ld_count);
4848
4849 if (ld_count > instance->fw_supported_vd_count)
4850 break;
4851
4852 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
4853
4854 for (ld_index = 0; ld_index < ld_count; ld_index++) {
4855 if (ci->ldList[ld_index].state != 0) {
4856 ids = ci->ldList[ld_index].ref.targetId;
4857 instance->ld_ids[ids] = ci->ldList[ld_index].ref.targetId;
4858 if (megasas_dbg_lvl & LD_PD_DEBUG)
4859 dev_info(&instance->pdev->dev,
4860 "LD%d: targetID: 0x%03x\n",
4861 ld_index, ids);
4862 }
4863 }
4864
4865 break;
4866 }
4867
4868 if (ret != DCMD_TIMEOUT)
4869 megasas_return_cmd(instance, cmd);
4870
4871 return ret;
4872 }
4873
4874 /**
4875 * megasas_ld_list_query - Returns FW's ld_list structure
4876 * @instance: Adapter soft state
4877 * @query_type: ld_list structure type
4878 *
4879 * Issues an internal command (DCMD) to get the FW's controller PD
4880 * list structure. This information is mainly used to find out SYSTEM
4881 * supported by the FW.
4882 */
4883 static int
megasas_ld_list_query(struct megasas_instance * instance,u8 query_type)4884 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
4885 {
4886 int ret = 0, ld_index = 0, ids = 0;
4887 struct megasas_cmd *cmd;
4888 struct megasas_dcmd_frame *dcmd;
4889 struct MR_LD_TARGETID_LIST *ci;
4890 dma_addr_t ci_h = 0;
4891 u32 tgtid_count;
4892
4893 ci = instance->ld_targetid_list_buf;
4894 ci_h = instance->ld_targetid_list_buf_h;
4895
4896 cmd = megasas_get_cmd(instance);
4897
4898 if (!cmd) {
4899 dev_warn(&instance->pdev->dev,
4900 "megasas_ld_list_query: Failed to get cmd\n");
4901 return -ENOMEM;
4902 }
4903
4904 dcmd = &cmd->frame->dcmd;
4905
4906 memset(ci, 0, sizeof(*ci));
4907 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4908
4909 dcmd->mbox.b[0] = query_type;
4910 if (instance->supportmax256vd)
4911 dcmd->mbox.b[2] = 1;
4912
4913 dcmd->cmd = MFI_CMD_DCMD;
4914 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4915 dcmd->sge_count = 1;
4916 dcmd->flags = MFI_FRAME_DIR_READ;
4917 dcmd->timeout = 0;
4918 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
4919 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY);
4920 dcmd->pad_0 = 0;
4921
4922 megasas_set_dma_settings(instance, dcmd, ci_h,
4923 sizeof(struct MR_LD_TARGETID_LIST));
4924
4925 if ((instance->adapter_type != MFI_SERIES) &&
4926 !instance->mask_interrupts)
4927 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4928 else
4929 ret = megasas_issue_polled(instance, cmd);
4930
4931 switch (ret) {
4932 case DCMD_FAILED:
4933 dev_info(&instance->pdev->dev,
4934 "DCMD not supported by firmware - %s %d\n",
4935 __func__, __LINE__);
4936 ret = megasas_get_ld_list(instance);
4937 break;
4938 case DCMD_TIMEOUT:
4939 switch (dcmd_timeout_ocr_possible(instance)) {
4940 case INITIATE_OCR:
4941 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4942 /*
4943 * DCMD failed from AEN path.
4944 * AEN path already hold reset_mutex to avoid PCI access
4945 * while OCR is in progress.
4946 */
4947 mutex_unlock(&instance->reset_mutex);
4948 megasas_reset_fusion(instance->host,
4949 MFI_IO_TIMEOUT_OCR);
4950 mutex_lock(&instance->reset_mutex);
4951 break;
4952 case KILL_ADAPTER:
4953 megaraid_sas_kill_hba(instance);
4954 break;
4955 case IGNORE_TIMEOUT:
4956 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4957 __func__, __LINE__);
4958 break;
4959 }
4960
4961 break;
4962 case DCMD_SUCCESS:
4963 tgtid_count = le32_to_cpu(ci->count);
4964
4965 if (megasas_dbg_lvl & LD_PD_DEBUG)
4966 dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n",
4967 __func__, tgtid_count);
4968
4969 if ((tgtid_count > (instance->fw_supported_vd_count)))
4970 break;
4971
4972 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
4973 for (ld_index = 0; ld_index < tgtid_count; ld_index++) {
4974 ids = ci->targetId[ld_index];
4975 instance->ld_ids[ids] = ci->targetId[ld_index];
4976 if (megasas_dbg_lvl & LD_PD_DEBUG)
4977 dev_info(&instance->pdev->dev, "LD%d: targetID: 0x%03x\n",
4978 ld_index, ci->targetId[ld_index]);
4979 }
4980
4981 break;
4982 }
4983
4984 if (ret != DCMD_TIMEOUT)
4985 megasas_return_cmd(instance, cmd);
4986
4987 return ret;
4988 }
4989
4990 /**
4991 * megasas_host_device_list_query
4992 * dcmd.opcode - MR_DCMD_CTRL_DEVICE_LIST_GET
4993 * dcmd.mbox - reserved
4994 * dcmd.sge IN - ptr to return MR_HOST_DEVICE_LIST structure
4995 * Desc: This DCMD will return the combined device list
4996 * Status: MFI_STAT_OK - List returned successfully
4997 * MFI_STAT_INVALID_CMD - Firmware support for the feature has been
4998 * disabled
4999 * @instance: Adapter soft state
5000 * @is_probe: Driver probe check
5001 * Return: 0 if DCMD succeeded
5002 * non-zero if failed
5003 */
5004 static int
megasas_host_device_list_query(struct megasas_instance * instance,bool is_probe)5005 megasas_host_device_list_query(struct megasas_instance *instance,
5006 bool is_probe)
5007 {
5008 int ret, i, target_id;
5009 struct megasas_cmd *cmd;
5010 struct megasas_dcmd_frame *dcmd;
5011 struct MR_HOST_DEVICE_LIST *ci;
5012 u32 count;
5013 dma_addr_t ci_h;
5014
5015 ci = instance->host_device_list_buf;
5016 ci_h = instance->host_device_list_buf_h;
5017
5018 cmd = megasas_get_cmd(instance);
5019
5020 if (!cmd) {
5021 dev_warn(&instance->pdev->dev,
5022 "%s: failed to get cmd\n",
5023 __func__);
5024 return -ENOMEM;
5025 }
5026
5027 dcmd = &cmd->frame->dcmd;
5028
5029 memset(ci, 0, sizeof(*ci));
5030 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5031
5032 dcmd->mbox.b[0] = is_probe ? 0 : 1;
5033 dcmd->cmd = MFI_CMD_DCMD;
5034 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5035 dcmd->sge_count = 1;
5036 dcmd->flags = MFI_FRAME_DIR_READ;
5037 dcmd->timeout = 0;
5038 dcmd->pad_0 = 0;
5039 dcmd->data_xfer_len = cpu_to_le32(HOST_DEVICE_LIST_SZ);
5040 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_DEVICE_LIST_GET);
5041
5042 megasas_set_dma_settings(instance, dcmd, ci_h, HOST_DEVICE_LIST_SZ);
5043
5044 if (!instance->mask_interrupts) {
5045 ret = megasas_issue_blocked_cmd(instance, cmd,
5046 MFI_IO_TIMEOUT_SECS);
5047 } else {
5048 ret = megasas_issue_polled(instance, cmd);
5049 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5050 }
5051
5052 switch (ret) {
5053 case DCMD_SUCCESS:
5054 /* Fill the internal pd_list and ld_ids array based on
5055 * targetIds returned by FW
5056 */
5057 count = le32_to_cpu(ci->count);
5058
5059 if (count > (MEGASAS_MAX_PD + MAX_LOGICAL_DRIVES_EXT))
5060 break;
5061
5062 if (megasas_dbg_lvl & LD_PD_DEBUG)
5063 dev_info(&instance->pdev->dev, "%s, Device count: 0x%x\n",
5064 __func__, count);
5065
5066 memset(instance->local_pd_list, 0,
5067 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
5068 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
5069 for (i = 0; i < count; i++) {
5070 target_id = le16_to_cpu(ci->host_device_list[i].target_id);
5071 if (ci->host_device_list[i].flags.u.bits.is_sys_pd) {
5072 instance->local_pd_list[target_id].tid = target_id;
5073 instance->local_pd_list[target_id].driveType =
5074 ci->host_device_list[i].scsi_type;
5075 instance->local_pd_list[target_id].driveState =
5076 MR_PD_STATE_SYSTEM;
5077 if (megasas_dbg_lvl & LD_PD_DEBUG)
5078 dev_info(&instance->pdev->dev,
5079 "Device %d: PD targetID: 0x%03x deviceType:0x%x\n",
5080 i, target_id, ci->host_device_list[i].scsi_type);
5081 } else {
5082 instance->ld_ids[target_id] = target_id;
5083 if (megasas_dbg_lvl & LD_PD_DEBUG)
5084 dev_info(&instance->pdev->dev,
5085 "Device %d: LD targetID: 0x%03x\n",
5086 i, target_id);
5087 }
5088 }
5089
5090 memcpy(instance->pd_list, instance->local_pd_list,
5091 sizeof(instance->pd_list));
5092 break;
5093
5094 case DCMD_TIMEOUT:
5095 switch (dcmd_timeout_ocr_possible(instance)) {
5096 case INITIATE_OCR:
5097 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5098 mutex_unlock(&instance->reset_mutex);
5099 megasas_reset_fusion(instance->host,
5100 MFI_IO_TIMEOUT_OCR);
5101 mutex_lock(&instance->reset_mutex);
5102 break;
5103 case KILL_ADAPTER:
5104 megaraid_sas_kill_hba(instance);
5105 break;
5106 case IGNORE_TIMEOUT:
5107 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5108 __func__, __LINE__);
5109 break;
5110 }
5111 break;
5112 case DCMD_FAILED:
5113 dev_err(&instance->pdev->dev,
5114 "%s: MR_DCMD_CTRL_DEVICE_LIST_GET failed\n",
5115 __func__);
5116 break;
5117 }
5118
5119 if (ret != DCMD_TIMEOUT)
5120 megasas_return_cmd(instance, cmd);
5121
5122 return ret;
5123 }
5124
5125 /*
5126 * megasas_update_ext_vd_details : Update details w.r.t Extended VD
5127 * instance : Controller's instance
5128 */
megasas_update_ext_vd_details(struct megasas_instance * instance)5129 static void megasas_update_ext_vd_details(struct megasas_instance *instance)
5130 {
5131 struct fusion_context *fusion;
5132 u32 ventura_map_sz = 0;
5133
5134 fusion = instance->ctrl_context;
5135 /* For MFI based controllers return dummy success */
5136 if (!fusion)
5137 return;
5138
5139 instance->supportmax256vd =
5140 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs;
5141 /* Below is additional check to address future FW enhancement */
5142 if (instance->ctrl_info_buf->max_lds > 64)
5143 instance->supportmax256vd = 1;
5144
5145 instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS
5146 * MEGASAS_MAX_DEV_PER_CHANNEL;
5147 instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS
5148 * MEGASAS_MAX_DEV_PER_CHANNEL;
5149 if (instance->supportmax256vd) {
5150 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT;
5151 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
5152 } else {
5153 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
5154 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
5155 }
5156
5157 dev_info(&instance->pdev->dev,
5158 "FW provided supportMaxExtLDs: %d\tmax_lds: %d\n",
5159 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs ? 1 : 0,
5160 instance->ctrl_info_buf->max_lds);
5161
5162 if (instance->max_raid_mapsize) {
5163 ventura_map_sz = instance->max_raid_mapsize *
5164 MR_MIN_MAP_SIZE; /* 64k */
5165 fusion->current_map_sz = ventura_map_sz;
5166 fusion->max_map_sz = ventura_map_sz;
5167 } else {
5168 fusion->old_map_sz =
5169 struct_size_t(struct MR_FW_RAID_MAP, ldSpanMap,
5170 instance->fw_supported_vd_count);
5171 fusion->new_map_sz = sizeof(struct MR_FW_RAID_MAP_EXT);
5172
5173 fusion->max_map_sz =
5174 max(fusion->old_map_sz, fusion->new_map_sz);
5175
5176 if (instance->supportmax256vd)
5177 fusion->current_map_sz = fusion->new_map_sz;
5178 else
5179 fusion->current_map_sz = fusion->old_map_sz;
5180 }
5181 /* irrespective of FW raid maps, driver raid map is constant */
5182 fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP_ALL);
5183 }
5184
5185 /*
5186 * dcmd.opcode - MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES
5187 * dcmd.hdr.length - number of bytes to read
5188 * dcmd.sge - Ptr to MR_SNAPDUMP_PROPERTIES
5189 * Desc: Fill in snapdump properties
5190 * Status: MFI_STAT_OK- Command successful
5191 */
megasas_get_snapdump_properties(struct megasas_instance * instance)5192 void megasas_get_snapdump_properties(struct megasas_instance *instance)
5193 {
5194 int ret = 0;
5195 struct megasas_cmd *cmd;
5196 struct megasas_dcmd_frame *dcmd;
5197 struct MR_SNAPDUMP_PROPERTIES *ci;
5198 dma_addr_t ci_h = 0;
5199
5200 ci = instance->snapdump_prop;
5201 ci_h = instance->snapdump_prop_h;
5202
5203 if (!ci)
5204 return;
5205
5206 cmd = megasas_get_cmd(instance);
5207
5208 if (!cmd) {
5209 dev_dbg(&instance->pdev->dev, "Failed to get a free cmd\n");
5210 return;
5211 }
5212
5213 dcmd = &cmd->frame->dcmd;
5214
5215 memset(ci, 0, sizeof(*ci));
5216 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5217
5218 dcmd->cmd = MFI_CMD_DCMD;
5219 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5220 dcmd->sge_count = 1;
5221 dcmd->flags = MFI_FRAME_DIR_READ;
5222 dcmd->timeout = 0;
5223 dcmd->pad_0 = 0;
5224 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_SNAPDUMP_PROPERTIES));
5225 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES);
5226
5227 megasas_set_dma_settings(instance, dcmd, ci_h,
5228 sizeof(struct MR_SNAPDUMP_PROPERTIES));
5229
5230 if (!instance->mask_interrupts) {
5231 ret = megasas_issue_blocked_cmd(instance, cmd,
5232 MFI_IO_TIMEOUT_SECS);
5233 } else {
5234 ret = megasas_issue_polled(instance, cmd);
5235 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5236 }
5237
5238 switch (ret) {
5239 case DCMD_SUCCESS:
5240 instance->snapdump_wait_time =
5241 min_t(u8, ci->trigger_min_num_sec_before_ocr,
5242 MEGASAS_MAX_SNAP_DUMP_WAIT_TIME);
5243 break;
5244
5245 case DCMD_TIMEOUT:
5246 switch (dcmd_timeout_ocr_possible(instance)) {
5247 case INITIATE_OCR:
5248 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5249 mutex_unlock(&instance->reset_mutex);
5250 megasas_reset_fusion(instance->host,
5251 MFI_IO_TIMEOUT_OCR);
5252 mutex_lock(&instance->reset_mutex);
5253 break;
5254 case KILL_ADAPTER:
5255 megaraid_sas_kill_hba(instance);
5256 break;
5257 case IGNORE_TIMEOUT:
5258 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5259 __func__, __LINE__);
5260 break;
5261 }
5262 }
5263
5264 if (ret != DCMD_TIMEOUT)
5265 megasas_return_cmd(instance, cmd);
5266 }
5267
5268 /**
5269 * megasas_get_ctrl_info - Returns FW's controller structure
5270 * @instance: Adapter soft state
5271 *
5272 * Issues an internal command (DCMD) to get the FW's controller structure.
5273 * This information is mainly used to find out the maximum IO transfer per
5274 * command supported by the FW.
5275 */
5276 int
megasas_get_ctrl_info(struct megasas_instance * instance)5277 megasas_get_ctrl_info(struct megasas_instance *instance)
5278 {
5279 int ret = 0;
5280 struct megasas_cmd *cmd;
5281 struct megasas_dcmd_frame *dcmd;
5282 struct megasas_ctrl_info *ci;
5283 dma_addr_t ci_h = 0;
5284
5285 ci = instance->ctrl_info_buf;
5286 ci_h = instance->ctrl_info_buf_h;
5287
5288 cmd = megasas_get_cmd(instance);
5289
5290 if (!cmd) {
5291 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a free cmd\n");
5292 return -ENOMEM;
5293 }
5294
5295 dcmd = &cmd->frame->dcmd;
5296
5297 memset(ci, 0, sizeof(*ci));
5298 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5299
5300 dcmd->cmd = MFI_CMD_DCMD;
5301 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5302 dcmd->sge_count = 1;
5303 dcmd->flags = MFI_FRAME_DIR_READ;
5304 dcmd->timeout = 0;
5305 dcmd->pad_0 = 0;
5306 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info));
5307 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO);
5308 dcmd->mbox.b[0] = 1;
5309
5310 megasas_set_dma_settings(instance, dcmd, ci_h,
5311 sizeof(struct megasas_ctrl_info));
5312
5313 if ((instance->adapter_type != MFI_SERIES) &&
5314 !instance->mask_interrupts) {
5315 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
5316 } else {
5317 ret = megasas_issue_polled(instance, cmd);
5318 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5319 }
5320
5321 switch (ret) {
5322 case DCMD_SUCCESS:
5323 /* Save required controller information in
5324 * CPU endianness format.
5325 */
5326 le32_to_cpus((u32 *)&ci->properties.OnOffProperties);
5327 le16_to_cpus((u16 *)&ci->properties.on_off_properties2);
5328 le32_to_cpus((u32 *)&ci->adapterOperations2);
5329 le32_to_cpus((u32 *)&ci->adapterOperations3);
5330 le16_to_cpus((u16 *)&ci->adapter_operations4);
5331 le32_to_cpus((u32 *)&ci->adapter_operations5);
5332
5333 /* Update the latest Ext VD info.
5334 * From Init path, store current firmware details.
5335 * From OCR path, detect any firmware properties changes.
5336 * in case of Firmware upgrade without system reboot.
5337 */
5338 megasas_update_ext_vd_details(instance);
5339 instance->support_seqnum_jbod_fp =
5340 ci->adapterOperations3.useSeqNumJbodFP;
5341 instance->support_morethan256jbod =
5342 ci->adapter_operations4.support_pd_map_target_id;
5343 instance->support_nvme_passthru =
5344 ci->adapter_operations4.support_nvme_passthru;
5345 instance->support_pci_lane_margining =
5346 ci->adapter_operations5.support_pci_lane_margining;
5347 instance->task_abort_tmo = ci->TaskAbortTO;
5348 instance->max_reset_tmo = ci->MaxResetTO;
5349
5350 /*Check whether controller is iMR or MR */
5351 instance->is_imr = (ci->memory_size ? 0 : 1);
5352
5353 instance->snapdump_wait_time =
5354 (ci->properties.on_off_properties2.enable_snap_dump ?
5355 MEGASAS_DEFAULT_SNAP_DUMP_WAIT_TIME : 0);
5356
5357 instance->enable_fw_dev_list =
5358 ci->properties.on_off_properties2.enable_fw_dev_list;
5359
5360 dev_info(&instance->pdev->dev,
5361 "controller type\t: %s(%dMB)\n",
5362 instance->is_imr ? "iMR" : "MR",
5363 le16_to_cpu(ci->memory_size));
5364
5365 instance->disableOnlineCtrlReset =
5366 ci->properties.OnOffProperties.disableOnlineCtrlReset;
5367 instance->secure_jbod_support =
5368 ci->adapterOperations3.supportSecurityonJBOD;
5369 dev_info(&instance->pdev->dev, "Online Controller Reset(OCR)\t: %s\n",
5370 instance->disableOnlineCtrlReset ? "Disabled" : "Enabled");
5371 dev_info(&instance->pdev->dev, "Secure JBOD support\t: %s\n",
5372 instance->secure_jbod_support ? "Yes" : "No");
5373 dev_info(&instance->pdev->dev, "NVMe passthru support\t: %s\n",
5374 instance->support_nvme_passthru ? "Yes" : "No");
5375 dev_info(&instance->pdev->dev,
5376 "FW provided TM TaskAbort/Reset timeout\t: %d secs/%d secs\n",
5377 instance->task_abort_tmo, instance->max_reset_tmo);
5378 dev_info(&instance->pdev->dev, "JBOD sequence map support\t: %s\n",
5379 instance->support_seqnum_jbod_fp ? "Yes" : "No");
5380 dev_info(&instance->pdev->dev, "PCI Lane Margining support\t: %s\n",
5381 instance->support_pci_lane_margining ? "Yes" : "No");
5382
5383 break;
5384
5385 case DCMD_TIMEOUT:
5386 switch (dcmd_timeout_ocr_possible(instance)) {
5387 case INITIATE_OCR:
5388 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5389 mutex_unlock(&instance->reset_mutex);
5390 megasas_reset_fusion(instance->host,
5391 MFI_IO_TIMEOUT_OCR);
5392 mutex_lock(&instance->reset_mutex);
5393 break;
5394 case KILL_ADAPTER:
5395 megaraid_sas_kill_hba(instance);
5396 break;
5397 case IGNORE_TIMEOUT:
5398 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5399 __func__, __LINE__);
5400 break;
5401 }
5402 break;
5403 case DCMD_FAILED:
5404 megaraid_sas_kill_hba(instance);
5405 break;
5406
5407 }
5408
5409 if (ret != DCMD_TIMEOUT)
5410 megasas_return_cmd(instance, cmd);
5411
5412 return ret;
5413 }
5414
5415 /*
5416 * megasas_set_crash_dump_params - Sends address of crash dump DMA buffer
5417 * to firmware
5418 *
5419 * @instance: Adapter soft state
5420 * @crash_buf_state - tell FW to turn ON/OFF crash dump feature
5421 MR_CRASH_BUF_TURN_OFF = 0
5422 MR_CRASH_BUF_TURN_ON = 1
5423 * @return 0 on success non-zero on failure.
5424 * Issues an internal command (DCMD) to set parameters for crash dump feature.
5425 * Driver will send address of crash dump DMA buffer and set mbox to tell FW
5426 * that driver supports crash dump feature. This DCMD will be sent only if
5427 * crash dump feature is supported by the FW.
5428 *
5429 */
megasas_set_crash_dump_params(struct megasas_instance * instance,u8 crash_buf_state)5430 int megasas_set_crash_dump_params(struct megasas_instance *instance,
5431 u8 crash_buf_state)
5432 {
5433 int ret = 0;
5434 struct megasas_cmd *cmd;
5435 struct megasas_dcmd_frame *dcmd;
5436
5437 cmd = megasas_get_cmd(instance);
5438
5439 if (!cmd) {
5440 dev_err(&instance->pdev->dev, "Failed to get a free cmd\n");
5441 return -ENOMEM;
5442 }
5443
5444
5445 dcmd = &cmd->frame->dcmd;
5446
5447 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5448 dcmd->mbox.b[0] = crash_buf_state;
5449 dcmd->cmd = MFI_CMD_DCMD;
5450 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5451 dcmd->sge_count = 1;
5452 dcmd->flags = MFI_FRAME_DIR_NONE;
5453 dcmd->timeout = 0;
5454 dcmd->pad_0 = 0;
5455 dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE);
5456 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS);
5457
5458 megasas_set_dma_settings(instance, dcmd, instance->crash_dump_h,
5459 CRASH_DMA_BUF_SIZE);
5460
5461 if ((instance->adapter_type != MFI_SERIES) &&
5462 !instance->mask_interrupts)
5463 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
5464 else
5465 ret = megasas_issue_polled(instance, cmd);
5466
5467 if (ret == DCMD_TIMEOUT) {
5468 switch (dcmd_timeout_ocr_possible(instance)) {
5469 case INITIATE_OCR:
5470 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5471 megasas_reset_fusion(instance->host,
5472 MFI_IO_TIMEOUT_OCR);
5473 break;
5474 case KILL_ADAPTER:
5475 megaraid_sas_kill_hba(instance);
5476 break;
5477 case IGNORE_TIMEOUT:
5478 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5479 __func__, __LINE__);
5480 break;
5481 }
5482 } else
5483 megasas_return_cmd(instance, cmd);
5484
5485 return ret;
5486 }
5487
5488 /**
5489 * megasas_issue_init_mfi - Initializes the FW
5490 * @instance: Adapter soft state
5491 *
5492 * Issues the INIT MFI cmd
5493 */
5494 static int
megasas_issue_init_mfi(struct megasas_instance * instance)5495 megasas_issue_init_mfi(struct megasas_instance *instance)
5496 {
5497 __le32 context;
5498 struct megasas_cmd *cmd;
5499 struct megasas_init_frame *init_frame;
5500 struct megasas_init_queue_info *initq_info;
5501 dma_addr_t init_frame_h;
5502 dma_addr_t initq_info_h;
5503
5504 /*
5505 * Prepare a init frame. Note the init frame points to queue info
5506 * structure. Each frame has SGL allocated after first 64 bytes. For
5507 * this frame - since we don't need any SGL - we use SGL's space as
5508 * queue info structure
5509 *
5510 * We will not get a NULL command below. We just created the pool.
5511 */
5512 cmd = megasas_get_cmd(instance);
5513
5514 init_frame = (struct megasas_init_frame *)cmd->frame;
5515 initq_info = (struct megasas_init_queue_info *)
5516 ((unsigned long)init_frame + 64);
5517
5518 init_frame_h = cmd->frame_phys_addr;
5519 initq_info_h = init_frame_h + 64;
5520
5521 context = init_frame->context;
5522 memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
5523 memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
5524 init_frame->context = context;
5525
5526 initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1);
5527 initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h);
5528
5529 initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h);
5530 initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h);
5531
5532 init_frame->cmd = MFI_CMD_INIT;
5533 init_frame->cmd_status = MFI_STAT_INVALID_STATUS;
5534 init_frame->queue_info_new_phys_addr_lo =
5535 cpu_to_le32(lower_32_bits(initq_info_h));
5536 init_frame->queue_info_new_phys_addr_hi =
5537 cpu_to_le32(upper_32_bits(initq_info_h));
5538
5539 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info));
5540
5541 /*
5542 * disable the intr before firing the init frame to FW
5543 */
5544 instance->instancet->disable_intr(instance);
5545
5546 /*
5547 * Issue the init frame in polled mode
5548 */
5549
5550 if (megasas_issue_polled(instance, cmd)) {
5551 dev_err(&instance->pdev->dev, "Failed to init firmware\n");
5552 megasas_return_cmd(instance, cmd);
5553 goto fail_fw_init;
5554 }
5555
5556 megasas_return_cmd(instance, cmd);
5557
5558 return 0;
5559
5560 fail_fw_init:
5561 return -EINVAL;
5562 }
5563
5564 static u32
megasas_init_adapter_mfi(struct megasas_instance * instance)5565 megasas_init_adapter_mfi(struct megasas_instance *instance)
5566 {
5567 u32 context_sz;
5568 u32 reply_q_sz;
5569
5570 /*
5571 * Get various operational parameters from status register
5572 */
5573 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(instance) & 0x00FFFF;
5574 /*
5575 * Reduce the max supported cmds by 1. This is to ensure that the
5576 * reply_q_sz (1 more than the max cmd that driver may send)
5577 * does not exceed max cmds that the FW can support
5578 */
5579 instance->max_fw_cmds = instance->max_fw_cmds-1;
5580 instance->max_mfi_cmds = instance->max_fw_cmds;
5581 instance->max_num_sge = (instance->instancet->read_fw_status_reg(instance) & 0xFF0000) >>
5582 0x10;
5583 /*
5584 * For MFI skinny adapters, MEGASAS_SKINNY_INT_CMDS commands
5585 * are reserved for IOCTL + driver's internal DCMDs.
5586 */
5587 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
5588 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
5589 instance->max_scsi_cmds = (instance->max_fw_cmds -
5590 MEGASAS_SKINNY_INT_CMDS);
5591 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
5592 } else {
5593 instance->max_scsi_cmds = (instance->max_fw_cmds -
5594 MEGASAS_INT_CMDS);
5595 sema_init(&instance->ioctl_sem, (MEGASAS_MFI_IOCTL_CMDS));
5596 }
5597
5598 instance->cur_can_queue = instance->max_scsi_cmds;
5599 /*
5600 * Create a pool of commands
5601 */
5602 if (megasas_alloc_cmds(instance))
5603 goto fail_alloc_cmds;
5604
5605 /*
5606 * Allocate memory for reply queue. Length of reply queue should
5607 * be _one_ more than the maximum commands handled by the firmware.
5608 *
5609 * Note: When FW completes commands, it places corresponding contex
5610 * values in this circular reply queue. This circular queue is a fairly
5611 * typical producer-consumer queue. FW is the producer (of completed
5612 * commands) and the driver is the consumer.
5613 */
5614 context_sz = sizeof(u32);
5615 reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
5616
5617 instance->reply_queue = dma_alloc_coherent(&instance->pdev->dev,
5618 reply_q_sz, &instance->reply_queue_h, GFP_KERNEL);
5619
5620 if (!instance->reply_queue) {
5621 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Out of DMA mem for reply queue\n");
5622 goto fail_reply_queue;
5623 }
5624
5625 if (megasas_issue_init_mfi(instance))
5626 goto fail_fw_init;
5627
5628 if (megasas_get_ctrl_info(instance)) {
5629 dev_err(&instance->pdev->dev, "(%d): Could get controller info "
5630 "Fail from %s %d\n", instance->unique_id,
5631 __func__, __LINE__);
5632 goto fail_fw_init;
5633 }
5634
5635 instance->fw_support_ieee = 0;
5636 instance->fw_support_ieee =
5637 (instance->instancet->read_fw_status_reg(instance) &
5638 0x04000000);
5639
5640 dev_notice(&instance->pdev->dev, "megasas_init_mfi: fw_support_ieee=%d",
5641 instance->fw_support_ieee);
5642
5643 if (instance->fw_support_ieee)
5644 instance->flag_ieee = 1;
5645
5646 return 0;
5647
5648 fail_fw_init:
5649
5650 dma_free_coherent(&instance->pdev->dev, reply_q_sz,
5651 instance->reply_queue, instance->reply_queue_h);
5652 fail_reply_queue:
5653 megasas_free_cmds(instance);
5654
5655 fail_alloc_cmds:
5656 return 1;
5657 }
5658
5659 static
megasas_setup_irq_poll(struct megasas_instance * instance)5660 void megasas_setup_irq_poll(struct megasas_instance *instance)
5661 {
5662 struct megasas_irq_context *irq_ctx;
5663 u32 count, i;
5664
5665 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
5666
5667 /* Initialize IRQ poll */
5668 for (i = 0; i < count; i++) {
5669 irq_ctx = &instance->irq_context[i];
5670 irq_ctx->os_irq = pci_irq_vector(instance->pdev, i);
5671 irq_ctx->irq_poll_scheduled = false;
5672 irq_poll_init(&irq_ctx->irqpoll,
5673 instance->threshold_reply_count,
5674 megasas_irqpoll);
5675 }
5676 }
5677
5678 /*
5679 * megasas_setup_irqs_ioapic - register legacy interrupts.
5680 * @instance: Adapter soft state
5681 *
5682 * Do not enable interrupt, only setup ISRs.
5683 *
5684 * Return 0 on success.
5685 */
5686 static int
megasas_setup_irqs_ioapic(struct megasas_instance * instance)5687 megasas_setup_irqs_ioapic(struct megasas_instance *instance)
5688 {
5689 struct pci_dev *pdev;
5690
5691 pdev = instance->pdev;
5692 instance->irq_context[0].instance = instance;
5693 instance->irq_context[0].MSIxIndex = 0;
5694 snprintf(instance->irq_context->name, MEGASAS_MSIX_NAME_LEN, "%s%u",
5695 "megasas", instance->host->host_no);
5696 if (request_irq(pci_irq_vector(pdev, 0),
5697 instance->instancet->service_isr, IRQF_SHARED,
5698 instance->irq_context->name, &instance->irq_context[0])) {
5699 dev_err(&instance->pdev->dev,
5700 "Failed to register IRQ from %s %d\n",
5701 __func__, __LINE__);
5702 return -1;
5703 }
5704 instance->perf_mode = MR_LATENCY_PERF_MODE;
5705 instance->low_latency_index_start = 0;
5706 return 0;
5707 }
5708
5709 /**
5710 * megasas_setup_irqs_msix - register MSI-x interrupts.
5711 * @instance: Adapter soft state
5712 * @is_probe: Driver probe check
5713 *
5714 * Do not enable interrupt, only setup ISRs.
5715 *
5716 * Return 0 on success.
5717 */
5718 static int
megasas_setup_irqs_msix(struct megasas_instance * instance,u8 is_probe)5719 megasas_setup_irqs_msix(struct megasas_instance *instance, u8 is_probe)
5720 {
5721 int i, j;
5722 struct pci_dev *pdev;
5723
5724 pdev = instance->pdev;
5725
5726 /* Try MSI-x */
5727 for (i = 0; i < instance->msix_vectors; i++) {
5728 instance->irq_context[i].instance = instance;
5729 instance->irq_context[i].MSIxIndex = i;
5730 snprintf(instance->irq_context[i].name, MEGASAS_MSIX_NAME_LEN, "%s%u-msix%u",
5731 "megasas", instance->host->host_no, i);
5732 if (request_irq(pci_irq_vector(pdev, i),
5733 instance->instancet->service_isr, 0, instance->irq_context[i].name,
5734 &instance->irq_context[i])) {
5735 dev_err(&instance->pdev->dev,
5736 "Failed to register IRQ for vector %d.\n", i);
5737 for (j = 0; j < i; j++) {
5738 if (j < instance->low_latency_index_start)
5739 irq_update_affinity_hint(
5740 pci_irq_vector(pdev, j), NULL);
5741 free_irq(pci_irq_vector(pdev, j),
5742 &instance->irq_context[j]);
5743 }
5744 /* Retry irq register for IO_APIC*/
5745 instance->msix_vectors = 0;
5746 instance->msix_load_balance = false;
5747 if (is_probe) {
5748 pci_free_irq_vectors(instance->pdev);
5749 return megasas_setup_irqs_ioapic(instance);
5750 } else {
5751 return -1;
5752 }
5753 }
5754 }
5755
5756 return 0;
5757 }
5758
5759 /*
5760 * megasas_destroy_irqs- unregister interrupts.
5761 * @instance: Adapter soft state
5762 * return: void
5763 */
5764 static void
megasas_destroy_irqs(struct megasas_instance * instance)5765 megasas_destroy_irqs(struct megasas_instance *instance) {
5766
5767 int i;
5768 int count;
5769 struct megasas_irq_context *irq_ctx;
5770
5771 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
5772 if (instance->adapter_type != MFI_SERIES) {
5773 for (i = 0; i < count; i++) {
5774 irq_ctx = &instance->irq_context[i];
5775 irq_poll_disable(&irq_ctx->irqpoll);
5776 }
5777 }
5778
5779 if (instance->msix_vectors)
5780 for (i = 0; i < instance->msix_vectors; i++) {
5781 if (i < instance->low_latency_index_start)
5782 irq_update_affinity_hint(
5783 pci_irq_vector(instance->pdev, i), NULL);
5784 free_irq(pci_irq_vector(instance->pdev, i),
5785 &instance->irq_context[i]);
5786 }
5787 else
5788 free_irq(pci_irq_vector(instance->pdev, 0),
5789 &instance->irq_context[0]);
5790 }
5791
5792 /**
5793 * megasas_setup_jbod_map - setup jbod map for FP seq_number.
5794 * @instance: Adapter soft state
5795 *
5796 * Return 0 on success.
5797 */
5798 void
megasas_setup_jbod_map(struct megasas_instance * instance)5799 megasas_setup_jbod_map(struct megasas_instance *instance)
5800 {
5801 int i;
5802 struct fusion_context *fusion = instance->ctrl_context;
5803 size_t pd_seq_map_sz;
5804
5805 pd_seq_map_sz = struct_size_t(struct MR_PD_CFG_SEQ_NUM_SYNC, seq,
5806 MAX_PHYSICAL_DEVICES);
5807
5808 instance->use_seqnum_jbod_fp =
5809 instance->support_seqnum_jbod_fp;
5810 if (reset_devices || !fusion ||
5811 !instance->support_seqnum_jbod_fp) {
5812 dev_info(&instance->pdev->dev,
5813 "JBOD sequence map is disabled %s %d\n",
5814 __func__, __LINE__);
5815 instance->use_seqnum_jbod_fp = false;
5816 return;
5817 }
5818
5819 if (fusion->pd_seq_sync[0])
5820 goto skip_alloc;
5821
5822 for (i = 0; i < JBOD_MAPS_COUNT; i++) {
5823 fusion->pd_seq_sync[i] = dma_alloc_coherent
5824 (&instance->pdev->dev, pd_seq_map_sz,
5825 &fusion->pd_seq_phys[i], GFP_KERNEL);
5826 if (!fusion->pd_seq_sync[i]) {
5827 dev_err(&instance->pdev->dev,
5828 "Failed to allocate memory from %s %d\n",
5829 __func__, __LINE__);
5830 if (i == 1) {
5831 dma_free_coherent(&instance->pdev->dev,
5832 pd_seq_map_sz, fusion->pd_seq_sync[0],
5833 fusion->pd_seq_phys[0]);
5834 fusion->pd_seq_sync[0] = NULL;
5835 }
5836 instance->use_seqnum_jbod_fp = false;
5837 return;
5838 }
5839 }
5840
5841 skip_alloc:
5842 if (!megasas_sync_pd_seq_num(instance, false) &&
5843 !megasas_sync_pd_seq_num(instance, true))
5844 instance->use_seqnum_jbod_fp = true;
5845 else
5846 instance->use_seqnum_jbod_fp = false;
5847 }
5848
megasas_setup_reply_map(struct megasas_instance * instance)5849 static void megasas_setup_reply_map(struct megasas_instance *instance)
5850 {
5851 const struct cpumask *mask;
5852 unsigned int queue, cpu, low_latency_index_start;
5853
5854 low_latency_index_start = instance->low_latency_index_start;
5855
5856 for (queue = low_latency_index_start; queue < instance->msix_vectors; queue++) {
5857 mask = pci_irq_get_affinity(instance->pdev, queue);
5858 if (!mask)
5859 goto fallback;
5860
5861 for_each_cpu(cpu, mask)
5862 instance->reply_map[cpu] = queue;
5863 }
5864 return;
5865
5866 fallback:
5867 queue = low_latency_index_start;
5868 for_each_possible_cpu(cpu) {
5869 instance->reply_map[cpu] = queue;
5870 if (queue == (instance->msix_vectors - 1))
5871 queue = low_latency_index_start;
5872 else
5873 queue++;
5874 }
5875 }
5876
5877 /**
5878 * megasas_get_device_list - Get the PD and LD device list from FW.
5879 * @instance: Adapter soft state
5880 * @return: Success or failure
5881 *
5882 * Issue DCMDs to Firmware to get the PD and LD list.
5883 * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination
5884 * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list.
5885 */
5886 static
megasas_get_device_list(struct megasas_instance * instance)5887 int megasas_get_device_list(struct megasas_instance *instance)
5888 {
5889 if (instance->enable_fw_dev_list) {
5890 if (megasas_host_device_list_query(instance, true))
5891 return FAILED;
5892 } else {
5893 if (megasas_get_pd_list(instance) < 0) {
5894 dev_err(&instance->pdev->dev, "failed to get PD list\n");
5895 return FAILED;
5896 }
5897
5898 if (megasas_ld_list_query(instance,
5899 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) {
5900 dev_err(&instance->pdev->dev, "failed to get LD list\n");
5901 return FAILED;
5902 }
5903 }
5904
5905 return SUCCESS;
5906 }
5907
5908 /**
5909 * megasas_set_high_iops_queue_affinity_and_hint - Set affinity and hint
5910 * for high IOPS queues
5911 * @instance: Adapter soft state
5912 * return: void
5913 */
5914 static inline void
megasas_set_high_iops_queue_affinity_and_hint(struct megasas_instance * instance)5915 megasas_set_high_iops_queue_affinity_and_hint(struct megasas_instance *instance)
5916 {
5917 int i;
5918 unsigned int irq;
5919 const struct cpumask *mask;
5920
5921 if (instance->perf_mode == MR_BALANCED_PERF_MODE) {
5922 int nid = dev_to_node(&instance->pdev->dev);
5923
5924 if (nid == NUMA_NO_NODE)
5925 nid = 0;
5926 mask = cpumask_of_node(nid);
5927
5928 for (i = 0; i < instance->low_latency_index_start; i++) {
5929 irq = pci_irq_vector(instance->pdev, i);
5930 irq_set_affinity_and_hint(irq, mask);
5931 }
5932 }
5933 }
5934
5935 static int
__megasas_alloc_irq_vectors(struct megasas_instance * instance)5936 __megasas_alloc_irq_vectors(struct megasas_instance *instance)
5937 {
5938 int i, irq_flags;
5939 struct irq_affinity desc = { .pre_vectors = instance->low_latency_index_start };
5940 struct irq_affinity *descp = &desc;
5941
5942 irq_flags = PCI_IRQ_MSIX;
5943
5944 if (instance->smp_affinity_enable)
5945 irq_flags |= PCI_IRQ_AFFINITY | PCI_IRQ_ALL_TYPES;
5946 else
5947 descp = NULL;
5948
5949 /* Do not allocate msix vectors for poll_queues.
5950 * msix_vectors is always within a range of FW supported reply queue.
5951 */
5952 i = pci_alloc_irq_vectors_affinity(instance->pdev,
5953 instance->low_latency_index_start,
5954 instance->msix_vectors - instance->iopoll_q_count, irq_flags, descp);
5955
5956 return i;
5957 }
5958
5959 /**
5960 * megasas_alloc_irq_vectors - Allocate IRQ vectors/enable MSI-x vectors
5961 * @instance: Adapter soft state
5962 * return: void
5963 */
5964 static void
megasas_alloc_irq_vectors(struct megasas_instance * instance)5965 megasas_alloc_irq_vectors(struct megasas_instance *instance)
5966 {
5967 int i;
5968 unsigned int num_msix_req;
5969
5970 instance->iopoll_q_count = 0;
5971 if ((instance->adapter_type != MFI_SERIES) &&
5972 poll_queues) {
5973
5974 instance->perf_mode = MR_LATENCY_PERF_MODE;
5975 instance->low_latency_index_start = 1;
5976
5977 /* reserve for default and non-mananged pre-vector. */
5978 if (instance->msix_vectors > (poll_queues + 2))
5979 instance->iopoll_q_count = poll_queues;
5980 else
5981 instance->iopoll_q_count = 0;
5982
5983 num_msix_req = blk_mq_num_online_queues(0) +
5984 instance->low_latency_index_start;
5985 instance->msix_vectors = min(num_msix_req,
5986 instance->msix_vectors);
5987
5988 }
5989
5990 i = __megasas_alloc_irq_vectors(instance);
5991
5992 if (((instance->perf_mode == MR_BALANCED_PERF_MODE)
5993 || instance->iopoll_q_count) &&
5994 (i != (instance->msix_vectors - instance->iopoll_q_count))) {
5995 if (instance->msix_vectors)
5996 pci_free_irq_vectors(instance->pdev);
5997 /* Disable Balanced IOPS mode and try realloc vectors */
5998 instance->perf_mode = MR_LATENCY_PERF_MODE;
5999 instance->low_latency_index_start = 1;
6000 num_msix_req = blk_mq_num_online_queues(0) +
6001 instance->low_latency_index_start;
6002
6003 instance->msix_vectors = min(num_msix_req,
6004 instance->msix_vectors);
6005
6006 instance->iopoll_q_count = 0;
6007 i = __megasas_alloc_irq_vectors(instance);
6008
6009 }
6010
6011 dev_info(&instance->pdev->dev,
6012 "requested/available msix %d/%d poll_queue %d\n",
6013 instance->msix_vectors - instance->iopoll_q_count,
6014 i, instance->iopoll_q_count);
6015
6016 if (i > 0)
6017 instance->msix_vectors = i;
6018 else
6019 instance->msix_vectors = 0;
6020
6021 if (instance->smp_affinity_enable)
6022 megasas_set_high_iops_queue_affinity_and_hint(instance);
6023 }
6024
6025 /**
6026 * megasas_init_fw - Initializes the FW
6027 * @instance: Adapter soft state
6028 *
6029 * This is the main function for initializing firmware
6030 */
6031
megasas_init_fw(struct megasas_instance * instance)6032 static int megasas_init_fw(struct megasas_instance *instance)
6033 {
6034 u32 max_sectors_1;
6035 u32 max_sectors_2, tmp_sectors, msix_enable;
6036 u32 scratch_pad_1, scratch_pad_2, scratch_pad_3, status_reg;
6037 resource_size_t base_addr;
6038 void *base_addr_phys;
6039 struct megasas_ctrl_info *ctrl_info = NULL;
6040 unsigned long bar_list;
6041 int i, j, loop;
6042 struct IOV_111 *iovPtr;
6043 struct fusion_context *fusion;
6044 bool intr_coalescing;
6045 unsigned int num_msix_req;
6046 u16 lnksta, speed;
6047
6048 fusion = instance->ctrl_context;
6049
6050 /* Find first memory bar */
6051 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
6052 instance->bar = find_first_bit(&bar_list, BITS_PER_LONG);
6053 if (pci_request_selected_regions(instance->pdev, 1<<instance->bar,
6054 "megasas: LSI")) {
6055 dev_printk(KERN_DEBUG, &instance->pdev->dev, "IO memory region busy!\n");
6056 return -EBUSY;
6057 }
6058
6059 base_addr = pci_resource_start(instance->pdev, instance->bar);
6060 instance->reg_set = ioremap(base_addr, 8192);
6061
6062 if (!instance->reg_set) {
6063 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to map IO mem\n");
6064 goto fail_ioremap;
6065 }
6066
6067 base_addr_phys = &base_addr;
6068 dev_printk(KERN_DEBUG, &instance->pdev->dev,
6069 "BAR:0x%lx BAR's base_addr(phys):%pa mapped virt_addr:0x%p\n",
6070 instance->bar, base_addr_phys, instance->reg_set);
6071
6072 if (instance->adapter_type != MFI_SERIES)
6073 instance->instancet = &megasas_instance_template_fusion;
6074 else {
6075 switch (instance->pdev->device) {
6076 case PCI_DEVICE_ID_LSI_SAS1078R:
6077 case PCI_DEVICE_ID_LSI_SAS1078DE:
6078 instance->instancet = &megasas_instance_template_ppc;
6079 break;
6080 case PCI_DEVICE_ID_LSI_SAS1078GEN2:
6081 case PCI_DEVICE_ID_LSI_SAS0079GEN2:
6082 instance->instancet = &megasas_instance_template_gen2;
6083 break;
6084 case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
6085 case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
6086 instance->instancet = &megasas_instance_template_skinny;
6087 break;
6088 case PCI_DEVICE_ID_LSI_SAS1064R:
6089 case PCI_DEVICE_ID_DELL_PERC5:
6090 default:
6091 instance->instancet = &megasas_instance_template_xscale;
6092 instance->pd_list_not_supported = 1;
6093 break;
6094 }
6095 }
6096
6097 if (megasas_transition_to_ready(instance, 0)) {
6098 dev_info(&instance->pdev->dev,
6099 "Failed to transition controller to ready from %s!\n",
6100 __func__);
6101 if (instance->adapter_type != MFI_SERIES) {
6102 status_reg = instance->instancet->read_fw_status_reg(
6103 instance);
6104 if (status_reg & MFI_RESET_ADAPTER) {
6105 if (megasas_adp_reset_wait_for_ready
6106 (instance, true, 0) == FAILED)
6107 goto fail_ready_state;
6108 } else {
6109 goto fail_ready_state;
6110 }
6111 } else {
6112 atomic_set(&instance->fw_reset_no_pci_access, 1);
6113 instance->instancet->adp_reset
6114 (instance, instance->reg_set);
6115 atomic_set(&instance->fw_reset_no_pci_access, 0);
6116
6117 /*waiting for about 30 second before retry*/
6118 ssleep(30);
6119
6120 if (megasas_transition_to_ready(instance, 0))
6121 goto fail_ready_state;
6122 }
6123
6124 dev_info(&instance->pdev->dev,
6125 "FW restarted successfully from %s!\n",
6126 __func__);
6127 }
6128
6129 megasas_init_ctrl_params(instance);
6130
6131 if (megasas_set_dma_mask(instance))
6132 goto fail_ready_state;
6133
6134 if (megasas_alloc_ctrl_mem(instance))
6135 goto fail_alloc_dma_buf;
6136
6137 if (megasas_alloc_ctrl_dma_buffers(instance))
6138 goto fail_alloc_dma_buf;
6139
6140 fusion = instance->ctrl_context;
6141
6142 if (instance->adapter_type >= VENTURA_SERIES) {
6143 scratch_pad_2 =
6144 megasas_readl(instance,
6145 &instance->reg_set->outbound_scratch_pad_2);
6146 instance->max_raid_mapsize = ((scratch_pad_2 >>
6147 MR_MAX_RAID_MAP_SIZE_OFFSET_SHIFT) &
6148 MR_MAX_RAID_MAP_SIZE_MASK);
6149 }
6150
6151 instance->enable_sdev_max_qd = enable_sdev_max_qd;
6152
6153 switch (instance->adapter_type) {
6154 case VENTURA_SERIES:
6155 fusion->pcie_bw_limitation = true;
6156 break;
6157 case AERO_SERIES:
6158 fusion->r56_div_offload = true;
6159 break;
6160 default:
6161 break;
6162 }
6163
6164 /* Check if MSI-X is supported while in ready state */
6165 msix_enable = (instance->instancet->read_fw_status_reg(instance) &
6166 0x4000000) >> 0x1a;
6167 if (msix_enable && !msix_disable) {
6168
6169 scratch_pad_1 = megasas_readl
6170 (instance, &instance->reg_set->outbound_scratch_pad_1);
6171 /* Check max MSI-X vectors */
6172 if (fusion) {
6173 if (instance->adapter_type == THUNDERBOLT_SERIES) {
6174 /* Thunderbolt Series*/
6175 instance->msix_vectors = (scratch_pad_1
6176 & MR_MAX_REPLY_QUEUES_OFFSET) + 1;
6177 } else {
6178 instance->msix_vectors = ((scratch_pad_1
6179 & MR_MAX_REPLY_QUEUES_EXT_OFFSET)
6180 >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1;
6181
6182 /*
6183 * For Invader series, > 8 MSI-x vectors
6184 * supported by FW/HW implies combined
6185 * reply queue mode is enabled.
6186 * For Ventura series, > 16 MSI-x vectors
6187 * supported by FW/HW implies combined
6188 * reply queue mode is enabled.
6189 */
6190 switch (instance->adapter_type) {
6191 case INVADER_SERIES:
6192 if (instance->msix_vectors > 8)
6193 instance->msix_combined = true;
6194 break;
6195 case AERO_SERIES:
6196 case VENTURA_SERIES:
6197 if (instance->msix_vectors > 16)
6198 instance->msix_combined = true;
6199 break;
6200 }
6201
6202 if (rdpq_enable)
6203 instance->is_rdpq = (scratch_pad_1 & MR_RDPQ_MODE_OFFSET) ?
6204 1 : 0;
6205
6206 if (instance->adapter_type >= INVADER_SERIES &&
6207 !instance->msix_combined) {
6208 instance->msix_load_balance = true;
6209 instance->smp_affinity_enable = false;
6210 }
6211
6212 /* Save 1-15 reply post index address to local memory
6213 * Index 0 is already saved from reg offset
6214 * MPI2_REPLY_POST_HOST_INDEX_OFFSET
6215 */
6216 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) {
6217 instance->reply_post_host_index_addr[loop] =
6218 (u32 __iomem *)
6219 ((u8 __iomem *)instance->reg_set +
6220 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET
6221 + (loop * 0x10));
6222 }
6223 }
6224
6225 dev_info(&instance->pdev->dev,
6226 "firmware supports msix\t: (%d)",
6227 instance->msix_vectors);
6228 if (msix_vectors)
6229 instance->msix_vectors = min(msix_vectors,
6230 instance->msix_vectors);
6231 } else /* MFI adapters */
6232 instance->msix_vectors = 1;
6233
6234
6235 /*
6236 * For Aero (if some conditions are met), driver will configure a
6237 * few additional reply queues with interrupt coalescing enabled.
6238 * These queues with interrupt coalescing enabled are called
6239 * High IOPS queues and rest of reply queues (based on number of
6240 * logical CPUs) are termed as Low latency queues.
6241 *
6242 * Total Number of reply queues = High IOPS queues + low latency queues
6243 *
6244 * For rest of fusion adapters, 1 additional reply queue will be
6245 * reserved for management commands, rest of reply queues
6246 * (based on number of logical CPUs) will be used for IOs and
6247 * referenced as IO queues.
6248 * Total Number of reply queues = 1 + IO queues
6249 *
6250 * MFI adapters supports single MSI-x so single reply queue
6251 * will be used for IO and management commands.
6252 */
6253
6254 intr_coalescing = (scratch_pad_1 & MR_INTR_COALESCING_SUPPORT_OFFSET) ?
6255 true : false;
6256 if (intr_coalescing &&
6257 (blk_mq_num_online_queues(0) >= MR_HIGH_IOPS_QUEUE_COUNT) &&
6258 (instance->msix_vectors == MEGASAS_MAX_MSIX_QUEUES))
6259 instance->perf_mode = MR_BALANCED_PERF_MODE;
6260 else
6261 instance->perf_mode = MR_LATENCY_PERF_MODE;
6262
6263
6264 if (instance->adapter_type == AERO_SERIES) {
6265 pcie_capability_read_word(instance->pdev, PCI_EXP_LNKSTA, &lnksta);
6266 speed = lnksta & PCI_EXP_LNKSTA_CLS;
6267
6268 /*
6269 * For Aero, if PCIe link speed is <16 GT/s, then driver should operate
6270 * in latency perf mode and enable R1 PCI bandwidth algorithm
6271 */
6272 if (speed < 0x4) {
6273 instance->perf_mode = MR_LATENCY_PERF_MODE;
6274 fusion->pcie_bw_limitation = true;
6275 }
6276
6277 /*
6278 * Performance mode settings provided through module parameter-perf_mode will
6279 * take affect only for:
6280 * 1. Aero family of adapters.
6281 * 2. When user sets module parameter- perf_mode in range of 0-2.
6282 */
6283 if ((perf_mode >= MR_BALANCED_PERF_MODE) &&
6284 (perf_mode <= MR_LATENCY_PERF_MODE))
6285 instance->perf_mode = perf_mode;
6286 /*
6287 * If intr coalescing is not supported by controller FW, then IOPS
6288 * and Balanced modes are not feasible.
6289 */
6290 if (!intr_coalescing)
6291 instance->perf_mode = MR_LATENCY_PERF_MODE;
6292
6293 }
6294
6295 if (instance->perf_mode == MR_BALANCED_PERF_MODE)
6296 instance->low_latency_index_start =
6297 MR_HIGH_IOPS_QUEUE_COUNT;
6298 else
6299 instance->low_latency_index_start = 1;
6300
6301 num_msix_req = blk_mq_num_online_queues(0) +
6302 instance->low_latency_index_start;
6303
6304 instance->msix_vectors = min(num_msix_req,
6305 instance->msix_vectors);
6306
6307 megasas_alloc_irq_vectors(instance);
6308 if (!instance->msix_vectors)
6309 instance->msix_load_balance = false;
6310 }
6311 /*
6312 * MSI-X host index 0 is common for all adapter.
6313 * It is used for all MPT based Adapters.
6314 */
6315 if (instance->msix_combined) {
6316 instance->reply_post_host_index_addr[0] =
6317 (u32 *)((u8 *)instance->reg_set +
6318 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET);
6319 } else {
6320 instance->reply_post_host_index_addr[0] =
6321 (u32 *)((u8 *)instance->reg_set +
6322 MPI2_REPLY_POST_HOST_INDEX_OFFSET);
6323 }
6324
6325 if (!instance->msix_vectors) {
6326 i = pci_alloc_irq_vectors(instance->pdev, 1, 1, PCI_IRQ_INTX);
6327 if (i < 0)
6328 goto fail_init_adapter;
6329 }
6330
6331 megasas_setup_reply_map(instance);
6332
6333 dev_info(&instance->pdev->dev,
6334 "current msix/max num queues\t: (%d/%u)\n",
6335 instance->msix_vectors, blk_mq_num_online_queues(0));
6336 dev_info(&instance->pdev->dev,
6337 "RDPQ mode\t: (%s)\n", instance->is_rdpq ? "enabled" : "disabled");
6338
6339 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
6340 (unsigned long)instance);
6341
6342 /*
6343 * Below are default value for legacy Firmware.
6344 * non-fusion based controllers
6345 */
6346 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
6347 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
6348 /* Get operational params, sge flags, send init cmd to controller */
6349 if (instance->instancet->init_adapter(instance))
6350 goto fail_init_adapter;
6351
6352 if (instance->adapter_type >= VENTURA_SERIES) {
6353 scratch_pad_3 =
6354 megasas_readl(instance,
6355 &instance->reg_set->outbound_scratch_pad_3);
6356 if ((scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK) >=
6357 MR_DEFAULT_NVME_PAGE_SHIFT)
6358 instance->nvme_page_size =
6359 (1 << (scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK));
6360
6361 dev_info(&instance->pdev->dev,
6362 "NVME page size\t: (%d)\n", instance->nvme_page_size);
6363 }
6364
6365 if (instance->msix_vectors ?
6366 megasas_setup_irqs_msix(instance, 1) :
6367 megasas_setup_irqs_ioapic(instance))
6368 goto fail_init_adapter;
6369
6370 if (instance->adapter_type != MFI_SERIES)
6371 megasas_setup_irq_poll(instance);
6372
6373 instance->instancet->enable_intr(instance);
6374
6375 dev_info(&instance->pdev->dev, "INIT adapter done\n");
6376
6377 megasas_setup_jbod_map(instance);
6378
6379 scoped_guard(mutex, &instance->reset_mutex) {
6380 if (megasas_get_device_list(instance) != SUCCESS) {
6381 dev_err(&instance->pdev->dev,
6382 "%s: megasas_get_device_list failed\n",
6383 __func__);
6384 goto fail_get_ld_pd_list;
6385 }
6386 }
6387
6388 /* stream detection initialization */
6389 if (instance->adapter_type >= VENTURA_SERIES) {
6390 fusion->stream_detect_by_ld =
6391 kzalloc_objs(struct LD_STREAM_DETECT *,
6392 MAX_LOGICAL_DRIVES_EXT);
6393 if (!fusion->stream_detect_by_ld) {
6394 dev_err(&instance->pdev->dev,
6395 "unable to allocate stream detection for pool of LDs\n");
6396 goto fail_get_ld_pd_list;
6397 }
6398 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i) {
6399 fusion->stream_detect_by_ld[i] =
6400 kzalloc_obj(struct LD_STREAM_DETECT);
6401 if (!fusion->stream_detect_by_ld[i]) {
6402 dev_err(&instance->pdev->dev,
6403 "unable to allocate stream detect by LD\n");
6404 for (j = 0; j < i; ++j)
6405 kfree(fusion->stream_detect_by_ld[j]);
6406 kfree(fusion->stream_detect_by_ld);
6407 fusion->stream_detect_by_ld = NULL;
6408 goto fail_get_ld_pd_list;
6409 }
6410 fusion->stream_detect_by_ld[i]->mru_bit_map
6411 = MR_STREAM_BITMAP;
6412 }
6413 }
6414
6415 /*
6416 * Compute the max allowed sectors per IO: The controller info has two
6417 * limits on max sectors. Driver should use the minimum of these two.
6418 *
6419 * 1 << stripe_sz_ops.min = max sectors per strip
6420 *
6421 * Note that older firmwares ( < FW ver 30) didn't report information
6422 * to calculate max_sectors_1. So the number ended up as zero always.
6423 */
6424 tmp_sectors = 0;
6425 ctrl_info = instance->ctrl_info_buf;
6426
6427 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
6428 le16_to_cpu(ctrl_info->max_strips_per_io);
6429 max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size);
6430
6431 tmp_sectors = min_t(u32, max_sectors_1, max_sectors_2);
6432
6433 instance->peerIsPresent = ctrl_info->cluster.peerIsPresent;
6434 instance->passive = ctrl_info->cluster.passive;
6435 memcpy(instance->clusterId, ctrl_info->clusterId, sizeof(instance->clusterId));
6436 instance->UnevenSpanSupport =
6437 ctrl_info->adapterOperations2.supportUnevenSpans;
6438 if (instance->UnevenSpanSupport) {
6439 struct fusion_context *fusion = instance->ctrl_context;
6440 if (MR_ValidateMapInfo(instance, instance->map_id))
6441 fusion->fast_path_io = 1;
6442 else
6443 fusion->fast_path_io = 0;
6444
6445 }
6446 if (ctrl_info->host_interface.SRIOV) {
6447 instance->requestorId = ctrl_info->iov.requestorId;
6448 if (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) {
6449 if (!ctrl_info->adapterOperations2.activePassive)
6450 instance->PlasmaFW111 = 1;
6451
6452 dev_info(&instance->pdev->dev, "SR-IOV: firmware type: %s\n",
6453 instance->PlasmaFW111 ? "1.11" : "new");
6454
6455 if (instance->PlasmaFW111) {
6456 iovPtr = (struct IOV_111 *)
6457 ((unsigned char *)ctrl_info + IOV_111_OFFSET);
6458 instance->requestorId = iovPtr->requestorId;
6459 }
6460 }
6461 dev_info(&instance->pdev->dev, "SRIOV: VF requestorId %d\n",
6462 instance->requestorId);
6463 }
6464
6465 instance->crash_dump_fw_support =
6466 ctrl_info->adapterOperations3.supportCrashDump;
6467 instance->crash_dump_drv_support =
6468 (instance->crash_dump_fw_support &&
6469 instance->crash_dump_buf);
6470 if (instance->crash_dump_drv_support)
6471 megasas_set_crash_dump_params(instance,
6472 MR_CRASH_BUF_TURN_OFF);
6473
6474 else {
6475 if (instance->crash_dump_buf)
6476 dma_free_coherent(&instance->pdev->dev,
6477 CRASH_DMA_BUF_SIZE,
6478 instance->crash_dump_buf,
6479 instance->crash_dump_h);
6480 instance->crash_dump_buf = NULL;
6481 }
6482
6483 if (instance->snapdump_wait_time) {
6484 scoped_guard(mutex, &instance->reset_mutex)
6485 megasas_get_snapdump_properties(instance);
6486 dev_info(&instance->pdev->dev, "Snap dump wait time\t: %d\n",
6487 instance->snapdump_wait_time);
6488 }
6489
6490 dev_info(&instance->pdev->dev,
6491 "pci id\t\t: (0x%04x)/(0x%04x)/(0x%04x)/(0x%04x)\n",
6492 le16_to_cpu(ctrl_info->pci.vendor_id),
6493 le16_to_cpu(ctrl_info->pci.device_id),
6494 le16_to_cpu(ctrl_info->pci.sub_vendor_id),
6495 le16_to_cpu(ctrl_info->pci.sub_device_id));
6496 dev_info(&instance->pdev->dev, "unevenspan support : %s\n",
6497 instance->UnevenSpanSupport ? "yes" : "no");
6498 dev_info(&instance->pdev->dev, "firmware crash dump : %s\n",
6499 instance->crash_dump_drv_support ? "yes" : "no");
6500 dev_info(&instance->pdev->dev, "JBOD sequence map : %s\n",
6501 instance->use_seqnum_jbod_fp ? "enabled" : "disabled");
6502
6503 instance->max_sectors_per_req = instance->max_num_sge *
6504 SGE_BUFFER_SIZE / 512;
6505 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
6506 instance->max_sectors_per_req = tmp_sectors;
6507
6508 /* Check for valid throttlequeuedepth module parameter */
6509 if (throttlequeuedepth &&
6510 throttlequeuedepth <= instance->max_scsi_cmds)
6511 instance->throttlequeuedepth = throttlequeuedepth;
6512 else
6513 instance->throttlequeuedepth =
6514 MEGASAS_THROTTLE_QUEUE_DEPTH;
6515
6516 if ((resetwaittime < 1) ||
6517 (resetwaittime > MEGASAS_RESET_WAIT_TIME))
6518 resetwaittime = MEGASAS_RESET_WAIT_TIME;
6519
6520 if ((scmd_timeout < 10) || (scmd_timeout > MEGASAS_DEFAULT_CMD_TIMEOUT))
6521 scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
6522
6523 /* Launch SR-IOV heartbeat timer */
6524 if (instance->requestorId) {
6525 if (!megasas_sriov_start_heartbeat(instance, 1)) {
6526 megasas_start_timer(instance);
6527 } else {
6528 instance->skip_heartbeat_timer_del = 1;
6529 goto fail_get_ld_pd_list;
6530 }
6531 }
6532
6533 /*
6534 * Create and start watchdog thread which will monitor
6535 * controller state every 1 sec and trigger OCR when
6536 * it enters fault state
6537 */
6538 if (instance->adapter_type != MFI_SERIES)
6539 if (megasas_fusion_start_watchdog(instance) != SUCCESS)
6540 goto fail_start_watchdog;
6541
6542 return 0;
6543
6544 fail_start_watchdog:
6545 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
6546 timer_delete_sync(&instance->sriov_heartbeat_timer);
6547 fail_get_ld_pd_list:
6548 instance->instancet->disable_intr(instance);
6549 megasas_destroy_irqs(instance);
6550 fail_init_adapter:
6551 if (instance->msix_vectors)
6552 pci_free_irq_vectors(instance->pdev);
6553 instance->msix_vectors = 0;
6554 fail_alloc_dma_buf:
6555 megasas_free_ctrl_dma_buffers(instance);
6556 megasas_free_ctrl_mem(instance);
6557 fail_ready_state:
6558 iounmap(instance->reg_set);
6559
6560 fail_ioremap:
6561 pci_release_selected_regions(instance->pdev, 1<<instance->bar);
6562
6563 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
6564 __func__, __LINE__);
6565 return -EINVAL;
6566 }
6567
6568 /**
6569 * megasas_release_mfi - Reverses the FW initialization
6570 * @instance: Adapter soft state
6571 */
megasas_release_mfi(struct megasas_instance * instance)6572 static void megasas_release_mfi(struct megasas_instance *instance)
6573 {
6574 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
6575
6576 if (instance->reply_queue)
6577 dma_free_coherent(&instance->pdev->dev, reply_q_sz,
6578 instance->reply_queue, instance->reply_queue_h);
6579
6580 megasas_free_cmds(instance);
6581
6582 iounmap(instance->reg_set);
6583
6584 pci_release_selected_regions(instance->pdev, 1<<instance->bar);
6585 }
6586
6587 /**
6588 * megasas_get_seq_num - Gets latest event sequence numbers
6589 * @instance: Adapter soft state
6590 * @eli: FW event log sequence numbers information
6591 *
6592 * FW maintains a log of all events in a non-volatile area. Upper layers would
6593 * usually find out the latest sequence number of the events, the seq number at
6594 * the boot etc. They would "read" all the events below the latest seq number
6595 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
6596 * number), they would subsribe to AEN (asynchronous event notification) and
6597 * wait for the events to happen.
6598 */
6599 static int
megasas_get_seq_num(struct megasas_instance * instance,struct megasas_evt_log_info * eli)6600 megasas_get_seq_num(struct megasas_instance *instance,
6601 struct megasas_evt_log_info *eli)
6602 {
6603 struct megasas_cmd *cmd;
6604 struct megasas_dcmd_frame *dcmd;
6605 struct megasas_evt_log_info *el_info;
6606 dma_addr_t el_info_h = 0;
6607 int ret;
6608
6609 cmd = megasas_get_cmd(instance);
6610
6611 if (!cmd) {
6612 return -ENOMEM;
6613 }
6614
6615 dcmd = &cmd->frame->dcmd;
6616 el_info = dma_alloc_coherent(&instance->pdev->dev,
6617 sizeof(struct megasas_evt_log_info),
6618 &el_info_h, GFP_KERNEL);
6619 if (!el_info) {
6620 megasas_return_cmd(instance, cmd);
6621 return -ENOMEM;
6622 }
6623
6624 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6625
6626 dcmd->cmd = MFI_CMD_DCMD;
6627 dcmd->cmd_status = 0x0;
6628 dcmd->sge_count = 1;
6629 dcmd->flags = MFI_FRAME_DIR_READ;
6630 dcmd->timeout = 0;
6631 dcmd->pad_0 = 0;
6632 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info));
6633 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO);
6634
6635 megasas_set_dma_settings(instance, dcmd, el_info_h,
6636 sizeof(struct megasas_evt_log_info));
6637
6638 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
6639 if (ret != DCMD_SUCCESS) {
6640 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
6641 __func__, __LINE__);
6642 goto dcmd_failed;
6643 }
6644
6645 /*
6646 * Copy the data back into callers buffer
6647 */
6648 eli->newest_seq_num = el_info->newest_seq_num;
6649 eli->oldest_seq_num = el_info->oldest_seq_num;
6650 eli->clear_seq_num = el_info->clear_seq_num;
6651 eli->shutdown_seq_num = el_info->shutdown_seq_num;
6652 eli->boot_seq_num = el_info->boot_seq_num;
6653
6654 dcmd_failed:
6655 dma_free_coherent(&instance->pdev->dev,
6656 sizeof(struct megasas_evt_log_info),
6657 el_info, el_info_h);
6658
6659 megasas_return_cmd(instance, cmd);
6660
6661 return ret;
6662 }
6663
6664 /**
6665 * megasas_register_aen - Registers for asynchronous event notification
6666 * @instance: Adapter soft state
6667 * @seq_num: The starting sequence number
6668 * @class_locale_word: Class of the event
6669 *
6670 * This function subscribes for AEN for events beyond the @seq_num. It requests
6671 * to be notified if and only if the event is of type @class_locale
6672 */
6673 static int
megasas_register_aen(struct megasas_instance * instance,u32 seq_num,u32 class_locale_word)6674 megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
6675 u32 class_locale_word)
6676 {
6677 int ret_val;
6678 struct megasas_cmd *cmd;
6679 struct megasas_dcmd_frame *dcmd;
6680 union megasas_evt_class_locale curr_aen;
6681 union megasas_evt_class_locale prev_aen;
6682
6683 /*
6684 * If there an AEN pending already (aen_cmd), check if the
6685 * class_locale of that pending AEN is inclusive of the new
6686 * AEN request we currently have. If it is, then we don't have
6687 * to do anything. In other words, whichever events the current
6688 * AEN request is subscribing to, have already been subscribed
6689 * to.
6690 *
6691 * If the old_cmd is _not_ inclusive, then we have to abort
6692 * that command, form a class_locale that is superset of both
6693 * old and current and re-issue to the FW
6694 */
6695
6696 curr_aen.word = class_locale_word;
6697
6698 if (instance->aen_cmd) {
6699
6700 prev_aen.word =
6701 le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]);
6702
6703 if ((curr_aen.members.class < MFI_EVT_CLASS_DEBUG) ||
6704 (curr_aen.members.class > MFI_EVT_CLASS_DEAD)) {
6705 dev_info(&instance->pdev->dev,
6706 "%s %d out of range class %d send by application\n",
6707 __func__, __LINE__, curr_aen.members.class);
6708 return 0;
6709 }
6710
6711 /*
6712 * A class whose enum value is smaller is inclusive of all
6713 * higher values. If a PROGRESS (= -1) was previously
6714 * registered, then a new registration requests for higher
6715 * classes need not be sent to FW. They are automatically
6716 * included.
6717 *
6718 * Locale numbers don't have such hierarchy. They are bitmap
6719 * values
6720 */
6721 if ((prev_aen.members.class <= curr_aen.members.class) &&
6722 !((prev_aen.members.locale & curr_aen.members.locale) ^
6723 curr_aen.members.locale)) {
6724 /*
6725 * Previously issued event registration includes
6726 * current request. Nothing to do.
6727 */
6728 return 0;
6729 } else {
6730 curr_aen.members.locale |= prev_aen.members.locale;
6731
6732 if (prev_aen.members.class < curr_aen.members.class)
6733 curr_aen.members.class = prev_aen.members.class;
6734
6735 instance->aen_cmd->abort_aen = 1;
6736 ret_val = megasas_issue_blocked_abort_cmd(instance,
6737 instance->
6738 aen_cmd, 30);
6739
6740 if (ret_val) {
6741 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to abort "
6742 "previous AEN command\n");
6743 return ret_val;
6744 }
6745 }
6746 }
6747
6748 cmd = megasas_get_cmd(instance);
6749
6750 if (!cmd)
6751 return -ENOMEM;
6752
6753 dcmd = &cmd->frame->dcmd;
6754
6755 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
6756
6757 /*
6758 * Prepare DCMD for aen registration
6759 */
6760 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6761
6762 dcmd->cmd = MFI_CMD_DCMD;
6763 dcmd->cmd_status = 0x0;
6764 dcmd->sge_count = 1;
6765 dcmd->flags = MFI_FRAME_DIR_READ;
6766 dcmd->timeout = 0;
6767 dcmd->pad_0 = 0;
6768 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail));
6769 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT);
6770 dcmd->mbox.w[0] = cpu_to_le32(seq_num);
6771 instance->last_seq_num = seq_num;
6772 dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word);
6773
6774 megasas_set_dma_settings(instance, dcmd, instance->evt_detail_h,
6775 sizeof(struct megasas_evt_detail));
6776
6777 if (instance->aen_cmd != NULL) {
6778 megasas_return_cmd(instance, cmd);
6779 return 0;
6780 }
6781
6782 /*
6783 * Store reference to the cmd used to register for AEN. When an
6784 * application wants us to register for AEN, we have to abort this
6785 * cmd and re-register with a new EVENT LOCALE supplied by that app
6786 */
6787 instance->aen_cmd = cmd;
6788
6789 /*
6790 * Issue the aen registration frame
6791 */
6792 instance->instancet->issue_dcmd(instance, cmd);
6793
6794 return 0;
6795 }
6796
6797 /* megasas_get_target_prop - Send DCMD with below details to firmware.
6798 *
6799 * This DCMD will fetch few properties of LD/system PD defined
6800 * in MR_TARGET_DEV_PROPERTIES. eg. Queue Depth, MDTS value.
6801 *
6802 * DCMD send by drivers whenever new target is added to the OS.
6803 *
6804 * dcmd.opcode - MR_DCMD_DEV_GET_TARGET_PROP
6805 * dcmd.mbox.b[0] - DCMD is to be fired for LD or system PD.
6806 * 0 = system PD, 1 = LD.
6807 * dcmd.mbox.s[1] - TargetID for LD/system PD.
6808 * dcmd.sge IN - Pointer to return MR_TARGET_DEV_PROPERTIES.
6809 *
6810 * @instance: Adapter soft state
6811 * @sdev: OS provided scsi device
6812 *
6813 * Returns 0 on success non-zero on failure.
6814 */
6815 int
megasas_get_target_prop(struct megasas_instance * instance,struct scsi_device * sdev)6816 megasas_get_target_prop(struct megasas_instance *instance,
6817 struct scsi_device *sdev)
6818 {
6819 int ret;
6820 struct megasas_cmd *cmd;
6821 struct megasas_dcmd_frame *dcmd;
6822 u16 targetId = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) +
6823 sdev->id;
6824
6825 cmd = megasas_get_cmd(instance);
6826
6827 if (!cmd) {
6828 dev_err(&instance->pdev->dev,
6829 "Failed to get cmd %s\n", __func__);
6830 return -ENOMEM;
6831 }
6832
6833 dcmd = &cmd->frame->dcmd;
6834
6835 memset(instance->tgt_prop, 0, sizeof(*instance->tgt_prop));
6836 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6837 dcmd->mbox.b[0] = MEGASAS_IS_LOGICAL(sdev);
6838
6839 dcmd->mbox.s[1] = cpu_to_le16(targetId);
6840 dcmd->cmd = MFI_CMD_DCMD;
6841 dcmd->cmd_status = 0xFF;
6842 dcmd->sge_count = 1;
6843 dcmd->flags = MFI_FRAME_DIR_READ;
6844 dcmd->timeout = 0;
6845 dcmd->pad_0 = 0;
6846 dcmd->data_xfer_len =
6847 cpu_to_le32(sizeof(struct MR_TARGET_PROPERTIES));
6848 dcmd->opcode = cpu_to_le32(MR_DCMD_DRV_GET_TARGET_PROP);
6849
6850 megasas_set_dma_settings(instance, dcmd, instance->tgt_prop_h,
6851 sizeof(struct MR_TARGET_PROPERTIES));
6852
6853 if ((instance->adapter_type != MFI_SERIES) &&
6854 !instance->mask_interrupts)
6855 ret = megasas_issue_blocked_cmd(instance,
6856 cmd, MFI_IO_TIMEOUT_SECS);
6857 else
6858 ret = megasas_issue_polled(instance, cmd);
6859
6860 switch (ret) {
6861 case DCMD_TIMEOUT:
6862 switch (dcmd_timeout_ocr_possible(instance)) {
6863 case INITIATE_OCR:
6864 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
6865 mutex_unlock(&instance->reset_mutex);
6866 megasas_reset_fusion(instance->host,
6867 MFI_IO_TIMEOUT_OCR);
6868 mutex_lock(&instance->reset_mutex);
6869 break;
6870 case KILL_ADAPTER:
6871 megaraid_sas_kill_hba(instance);
6872 break;
6873 case IGNORE_TIMEOUT:
6874 dev_info(&instance->pdev->dev,
6875 "Ignore DCMD timeout: %s %d\n",
6876 __func__, __LINE__);
6877 break;
6878 }
6879 break;
6880
6881 default:
6882 megasas_return_cmd(instance, cmd);
6883 }
6884 if (ret != DCMD_SUCCESS)
6885 dev_err(&instance->pdev->dev,
6886 "return from %s %d return value %d\n",
6887 __func__, __LINE__, ret);
6888
6889 return ret;
6890 }
6891
6892 /**
6893 * megasas_start_aen - Subscribes to AEN during driver load time
6894 * @instance: Adapter soft state
6895 */
megasas_start_aen(struct megasas_instance * instance)6896 static int megasas_start_aen(struct megasas_instance *instance)
6897 {
6898 struct megasas_evt_log_info eli;
6899 union megasas_evt_class_locale class_locale;
6900
6901 /*
6902 * Get the latest sequence number from FW
6903 */
6904 memset(&eli, 0, sizeof(eli));
6905
6906 if (megasas_get_seq_num(instance, &eli))
6907 return -1;
6908
6909 /*
6910 * Register AEN with FW for latest sequence number plus 1
6911 */
6912 class_locale.members.reserved = 0;
6913 class_locale.members.locale = MR_EVT_LOCALE_ALL;
6914 class_locale.members.class = MR_EVT_CLASS_DEBUG;
6915
6916 return megasas_register_aen(instance,
6917 le32_to_cpu(eli.newest_seq_num) + 1,
6918 class_locale.word);
6919 }
6920
6921 /**
6922 * megasas_io_attach - Attaches this driver to SCSI mid-layer
6923 * @instance: Adapter soft state
6924 */
megasas_io_attach(struct megasas_instance * instance)6925 static int megasas_io_attach(struct megasas_instance *instance)
6926 {
6927 struct Scsi_Host *host = instance->host;
6928
6929 /*
6930 * Export parameters required by SCSI mid-layer
6931 */
6932 host->unique_id = instance->unique_id;
6933 host->can_queue = instance->max_scsi_cmds;
6934 host->this_id = instance->init_id;
6935 host->sg_tablesize = instance->max_num_sge;
6936
6937 if (instance->fw_support_ieee)
6938 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
6939
6940 /*
6941 * Check if the module parameter value for max_sectors can be used
6942 */
6943 if (max_sectors && max_sectors < instance->max_sectors_per_req)
6944 instance->max_sectors_per_req = max_sectors;
6945 else {
6946 if (max_sectors) {
6947 if (((instance->pdev->device ==
6948 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
6949 (instance->pdev->device ==
6950 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
6951 (max_sectors <= MEGASAS_MAX_SECTORS)) {
6952 instance->max_sectors_per_req = max_sectors;
6953 } else {
6954 dev_info(&instance->pdev->dev, "max_sectors should be > 0"
6955 "and <= %d (or < 1MB for GEN2 controller)\n",
6956 instance->max_sectors_per_req);
6957 }
6958 }
6959 }
6960
6961 host->max_sectors = instance->max_sectors_per_req;
6962 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
6963 host->max_channel = MEGASAS_MAX_CHANNELS - 1;
6964 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
6965 host->max_lun = MEGASAS_MAX_LUN;
6966 host->max_cmd_len = 16;
6967
6968 /* Use shared host tagset only for fusion adaptors
6969 * if there are managed interrupts (smp affinity enabled case).
6970 * Single msix_vectors in kdump, so shared host tag is also disabled.
6971 */
6972
6973 host->host_tagset = 0;
6974 host->nr_hw_queues = 1;
6975
6976 if ((instance->adapter_type != MFI_SERIES) &&
6977 (instance->msix_vectors > instance->low_latency_index_start) &&
6978 host_tagset_enable &&
6979 instance->smp_affinity_enable) {
6980 host->host_tagset = 1;
6981 host->nr_hw_queues = instance->msix_vectors -
6982 instance->low_latency_index_start + instance->iopoll_q_count;
6983 if (instance->iopoll_q_count)
6984 host->nr_maps = 3;
6985 } else {
6986 instance->iopoll_q_count = 0;
6987 }
6988
6989 dev_info(&instance->pdev->dev,
6990 "Max firmware commands: %d shared with default "
6991 "hw_queues = %d poll_queues %d\n", instance->max_fw_cmds,
6992 host->nr_hw_queues - instance->iopoll_q_count,
6993 instance->iopoll_q_count);
6994 /*
6995 * Notify the mid-layer about the new controller
6996 */
6997 if (scsi_add_host(host, &instance->pdev->dev)) {
6998 dev_err(&instance->pdev->dev,
6999 "Failed to add host from %s %d\n",
7000 __func__, __LINE__);
7001 return -ENODEV;
7002 }
7003
7004 return 0;
7005 }
7006
7007 /**
7008 * megasas_set_dma_mask - Set DMA mask for supported controllers
7009 *
7010 * @instance: Adapter soft state
7011 * Description:
7012 *
7013 * For Ventura, driver/FW will operate in 63bit DMA addresses.
7014 *
7015 * For invader-
7016 * By default, driver/FW will operate in 32bit DMA addresses
7017 * for consistent DMA mapping but if 32 bit consistent
7018 * DMA mask fails, driver will try with 63 bit consistent
7019 * mask provided FW is true 63bit DMA capable
7020 *
7021 * For older controllers(Thunderbolt and MFI based adapters)-
7022 * driver/FW will operate in 32 bit consistent DMA addresses.
7023 */
7024 static int
megasas_set_dma_mask(struct megasas_instance * instance)7025 megasas_set_dma_mask(struct megasas_instance *instance)
7026 {
7027 u64 consistent_mask;
7028 struct pci_dev *pdev;
7029 u32 scratch_pad_1;
7030
7031 pdev = instance->pdev;
7032 consistent_mask = (instance->adapter_type >= VENTURA_SERIES) ?
7033 DMA_BIT_MASK(63) : DMA_BIT_MASK(32);
7034
7035 if (IS_DMA64) {
7036 if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(63)) &&
7037 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
7038 goto fail_set_dma_mask;
7039
7040 if ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) &&
7041 (dma_set_coherent_mask(&pdev->dev, consistent_mask) &&
7042 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))) {
7043 /*
7044 * If 32 bit DMA mask fails, then try for 64 bit mask
7045 * for FW capable of handling 64 bit DMA.
7046 */
7047 scratch_pad_1 = megasas_readl
7048 (instance, &instance->reg_set->outbound_scratch_pad_1);
7049
7050 if (!(scratch_pad_1 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET))
7051 goto fail_set_dma_mask;
7052 else if (dma_set_mask_and_coherent(&pdev->dev,
7053 DMA_BIT_MASK(63)))
7054 goto fail_set_dma_mask;
7055 }
7056 } else if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
7057 goto fail_set_dma_mask;
7058
7059 if (pdev->dev.coherent_dma_mask == DMA_BIT_MASK(32))
7060 instance->consistent_mask_64bit = false;
7061 else
7062 instance->consistent_mask_64bit = true;
7063
7064 dev_info(&pdev->dev, "%s bit DMA mask and %s bit consistent mask\n",
7065 ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) ? "63" : "32"),
7066 (instance->consistent_mask_64bit ? "63" : "32"));
7067
7068 return 0;
7069
7070 fail_set_dma_mask:
7071 dev_err(&pdev->dev, "Failed to set DMA mask\n");
7072 return -1;
7073
7074 }
7075
7076 /*
7077 * megasas_set_adapter_type - Set adapter type.
7078 * Supported controllers can be divided in
7079 * different categories-
7080 * enum MR_ADAPTER_TYPE {
7081 * MFI_SERIES = 1,
7082 * THUNDERBOLT_SERIES = 2,
7083 * INVADER_SERIES = 3,
7084 * VENTURA_SERIES = 4,
7085 * AERO_SERIES = 5,
7086 * };
7087 * @instance: Adapter soft state
7088 * return: void
7089 */
megasas_set_adapter_type(struct megasas_instance * instance)7090 static inline void megasas_set_adapter_type(struct megasas_instance *instance)
7091 {
7092 if ((instance->pdev->vendor == PCI_VENDOR_ID_DELL) &&
7093 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5)) {
7094 instance->adapter_type = MFI_SERIES;
7095 } else {
7096 switch (instance->pdev->device) {
7097 case PCI_DEVICE_ID_LSI_AERO_10E1:
7098 case PCI_DEVICE_ID_LSI_AERO_10E2:
7099 case PCI_DEVICE_ID_LSI_AERO_10E5:
7100 case PCI_DEVICE_ID_LSI_AERO_10E6:
7101 instance->adapter_type = AERO_SERIES;
7102 break;
7103 case PCI_DEVICE_ID_LSI_VENTURA:
7104 case PCI_DEVICE_ID_LSI_CRUSADER:
7105 case PCI_DEVICE_ID_LSI_HARPOON:
7106 case PCI_DEVICE_ID_LSI_TOMCAT:
7107 case PCI_DEVICE_ID_LSI_VENTURA_4PORT:
7108 case PCI_DEVICE_ID_LSI_CRUSADER_4PORT:
7109 instance->adapter_type = VENTURA_SERIES;
7110 break;
7111 case PCI_DEVICE_ID_LSI_FUSION:
7112 case PCI_DEVICE_ID_LSI_PLASMA:
7113 instance->adapter_type = THUNDERBOLT_SERIES;
7114 break;
7115 case PCI_DEVICE_ID_LSI_INVADER:
7116 case PCI_DEVICE_ID_LSI_INTRUDER:
7117 case PCI_DEVICE_ID_LSI_INTRUDER_24:
7118 case PCI_DEVICE_ID_LSI_CUTLASS_52:
7119 case PCI_DEVICE_ID_LSI_CUTLASS_53:
7120 case PCI_DEVICE_ID_LSI_FURY:
7121 instance->adapter_type = INVADER_SERIES;
7122 break;
7123 default: /* For all other supported controllers */
7124 instance->adapter_type = MFI_SERIES;
7125 break;
7126 }
7127 }
7128 }
7129
megasas_alloc_mfi_ctrl_mem(struct megasas_instance * instance)7130 static inline int megasas_alloc_mfi_ctrl_mem(struct megasas_instance *instance)
7131 {
7132 instance->producer = dma_alloc_coherent(&instance->pdev->dev,
7133 sizeof(u32), &instance->producer_h, GFP_KERNEL);
7134 instance->consumer = dma_alloc_coherent(&instance->pdev->dev,
7135 sizeof(u32), &instance->consumer_h, GFP_KERNEL);
7136
7137 if (!instance->producer || !instance->consumer) {
7138 dev_err(&instance->pdev->dev,
7139 "Failed to allocate memory for producer, consumer\n");
7140 return -1;
7141 }
7142
7143 *instance->producer = 0;
7144 *instance->consumer = 0;
7145 return 0;
7146 }
7147
7148 /**
7149 * megasas_alloc_ctrl_mem - Allocate per controller memory for core data
7150 * structures which are not common across MFI
7151 * adapters and fusion adapters.
7152 * For MFI based adapters, allocate producer and
7153 * consumer buffers. For fusion adapters, allocate
7154 * memory for fusion context.
7155 * @instance: Adapter soft state
7156 * return: 0 for SUCCESS
7157 */
megasas_alloc_ctrl_mem(struct megasas_instance * instance)7158 static int megasas_alloc_ctrl_mem(struct megasas_instance *instance)
7159 {
7160 instance->reply_map = kcalloc(nr_cpu_ids, sizeof(unsigned int),
7161 GFP_KERNEL);
7162 if (!instance->reply_map)
7163 return -ENOMEM;
7164
7165 switch (instance->adapter_type) {
7166 case MFI_SERIES:
7167 if (megasas_alloc_mfi_ctrl_mem(instance))
7168 return -ENOMEM;
7169 break;
7170 case AERO_SERIES:
7171 case VENTURA_SERIES:
7172 case THUNDERBOLT_SERIES:
7173 case INVADER_SERIES:
7174 if (megasas_alloc_fusion_context(instance))
7175 return -ENOMEM;
7176 break;
7177 }
7178
7179 return 0;
7180 }
7181
7182 /*
7183 * megasas_free_ctrl_mem - Free fusion context for fusion adapters and
7184 * producer, consumer buffers for MFI adapters
7185 *
7186 * @instance - Adapter soft instance
7187 *
7188 */
megasas_free_ctrl_mem(struct megasas_instance * instance)7189 static inline void megasas_free_ctrl_mem(struct megasas_instance *instance)
7190 {
7191 kfree(instance->reply_map);
7192 if (instance->adapter_type == MFI_SERIES) {
7193 if (instance->producer)
7194 dma_free_coherent(&instance->pdev->dev, sizeof(u32),
7195 instance->producer,
7196 instance->producer_h);
7197 if (instance->consumer)
7198 dma_free_coherent(&instance->pdev->dev, sizeof(u32),
7199 instance->consumer,
7200 instance->consumer_h);
7201 } else {
7202 megasas_free_fusion_context(instance);
7203 }
7204 }
7205
7206 /**
7207 * megasas_alloc_ctrl_dma_buffers - Allocate consistent DMA buffers during
7208 * driver load time
7209 *
7210 * @instance: Adapter soft instance
7211 *
7212 * @return: O for SUCCESS
7213 */
7214 static inline
megasas_alloc_ctrl_dma_buffers(struct megasas_instance * instance)7215 int megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance)
7216 {
7217 struct pci_dev *pdev = instance->pdev;
7218 struct fusion_context *fusion = instance->ctrl_context;
7219
7220 instance->evt_detail = dma_alloc_coherent(&pdev->dev,
7221 sizeof(struct megasas_evt_detail),
7222 &instance->evt_detail_h, GFP_KERNEL);
7223
7224 if (!instance->evt_detail) {
7225 dev_err(&instance->pdev->dev,
7226 "Failed to allocate event detail buffer\n");
7227 return -ENOMEM;
7228 }
7229
7230 if (fusion) {
7231 fusion->ioc_init_request =
7232 dma_alloc_coherent(&pdev->dev,
7233 sizeof(struct MPI2_IOC_INIT_REQUEST),
7234 &fusion->ioc_init_request_phys,
7235 GFP_KERNEL);
7236
7237 if (!fusion->ioc_init_request) {
7238 dev_err(&pdev->dev,
7239 "Failed to allocate ioc init request\n");
7240 return -ENOMEM;
7241 }
7242
7243 instance->snapdump_prop = dma_alloc_coherent(&pdev->dev,
7244 sizeof(struct MR_SNAPDUMP_PROPERTIES),
7245 &instance->snapdump_prop_h, GFP_KERNEL);
7246
7247 if (!instance->snapdump_prop)
7248 dev_err(&pdev->dev,
7249 "Failed to allocate snapdump properties buffer\n");
7250
7251 instance->host_device_list_buf = dma_alloc_coherent(&pdev->dev,
7252 HOST_DEVICE_LIST_SZ,
7253 &instance->host_device_list_buf_h,
7254 GFP_KERNEL);
7255
7256 if (!instance->host_device_list_buf) {
7257 dev_err(&pdev->dev,
7258 "Failed to allocate targetid list buffer\n");
7259 return -ENOMEM;
7260 }
7261
7262 }
7263
7264 instance->pd_list_buf =
7265 dma_alloc_coherent(&pdev->dev,
7266 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
7267 &instance->pd_list_buf_h, GFP_KERNEL);
7268
7269 if (!instance->pd_list_buf) {
7270 dev_err(&pdev->dev, "Failed to allocate PD list buffer\n");
7271 return -ENOMEM;
7272 }
7273
7274 instance->ctrl_info_buf =
7275 dma_alloc_coherent(&pdev->dev,
7276 sizeof(struct megasas_ctrl_info),
7277 &instance->ctrl_info_buf_h, GFP_KERNEL);
7278
7279 if (!instance->ctrl_info_buf) {
7280 dev_err(&pdev->dev,
7281 "Failed to allocate controller info buffer\n");
7282 return -ENOMEM;
7283 }
7284
7285 instance->ld_list_buf =
7286 dma_alloc_coherent(&pdev->dev,
7287 sizeof(struct MR_LD_LIST),
7288 &instance->ld_list_buf_h, GFP_KERNEL);
7289
7290 if (!instance->ld_list_buf) {
7291 dev_err(&pdev->dev, "Failed to allocate LD list buffer\n");
7292 return -ENOMEM;
7293 }
7294
7295 instance->ld_targetid_list_buf =
7296 dma_alloc_coherent(&pdev->dev,
7297 sizeof(struct MR_LD_TARGETID_LIST),
7298 &instance->ld_targetid_list_buf_h, GFP_KERNEL);
7299
7300 if (!instance->ld_targetid_list_buf) {
7301 dev_err(&pdev->dev,
7302 "Failed to allocate LD targetid list buffer\n");
7303 return -ENOMEM;
7304 }
7305
7306 if (!reset_devices) {
7307 instance->system_info_buf =
7308 dma_alloc_coherent(&pdev->dev,
7309 sizeof(struct MR_DRV_SYSTEM_INFO),
7310 &instance->system_info_h, GFP_KERNEL);
7311 instance->pd_info =
7312 dma_alloc_coherent(&pdev->dev,
7313 sizeof(struct MR_PD_INFO),
7314 &instance->pd_info_h, GFP_KERNEL);
7315 instance->tgt_prop =
7316 dma_alloc_coherent(&pdev->dev,
7317 sizeof(struct MR_TARGET_PROPERTIES),
7318 &instance->tgt_prop_h, GFP_KERNEL);
7319 instance->crash_dump_buf =
7320 dma_alloc_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE,
7321 &instance->crash_dump_h, GFP_KERNEL);
7322
7323 if (!instance->system_info_buf)
7324 dev_err(&instance->pdev->dev,
7325 "Failed to allocate system info buffer\n");
7326
7327 if (!instance->pd_info)
7328 dev_err(&instance->pdev->dev,
7329 "Failed to allocate pd_info buffer\n");
7330
7331 if (!instance->tgt_prop)
7332 dev_err(&instance->pdev->dev,
7333 "Failed to allocate tgt_prop buffer\n");
7334
7335 if (!instance->crash_dump_buf)
7336 dev_err(&instance->pdev->dev,
7337 "Failed to allocate crash dump buffer\n");
7338 }
7339
7340 return 0;
7341 }
7342
7343 /*
7344 * megasas_free_ctrl_dma_buffers - Free consistent DMA buffers allocated
7345 * during driver load time
7346 *
7347 * @instance- Adapter soft instance
7348 *
7349 */
7350 static inline
megasas_free_ctrl_dma_buffers(struct megasas_instance * instance)7351 void megasas_free_ctrl_dma_buffers(struct megasas_instance *instance)
7352 {
7353 struct pci_dev *pdev = instance->pdev;
7354 struct fusion_context *fusion = instance->ctrl_context;
7355
7356 if (instance->evt_detail)
7357 dma_free_coherent(&pdev->dev, sizeof(struct megasas_evt_detail),
7358 instance->evt_detail,
7359 instance->evt_detail_h);
7360
7361 if (fusion && fusion->ioc_init_request)
7362 dma_free_coherent(&pdev->dev,
7363 sizeof(struct MPI2_IOC_INIT_REQUEST),
7364 fusion->ioc_init_request,
7365 fusion->ioc_init_request_phys);
7366
7367 if (instance->pd_list_buf)
7368 dma_free_coherent(&pdev->dev,
7369 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
7370 instance->pd_list_buf,
7371 instance->pd_list_buf_h);
7372
7373 if (instance->ld_list_buf)
7374 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_LIST),
7375 instance->ld_list_buf,
7376 instance->ld_list_buf_h);
7377
7378 if (instance->ld_targetid_list_buf)
7379 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_TARGETID_LIST),
7380 instance->ld_targetid_list_buf,
7381 instance->ld_targetid_list_buf_h);
7382
7383 if (instance->ctrl_info_buf)
7384 dma_free_coherent(&pdev->dev, sizeof(struct megasas_ctrl_info),
7385 instance->ctrl_info_buf,
7386 instance->ctrl_info_buf_h);
7387
7388 if (instance->system_info_buf)
7389 dma_free_coherent(&pdev->dev, sizeof(struct MR_DRV_SYSTEM_INFO),
7390 instance->system_info_buf,
7391 instance->system_info_h);
7392
7393 if (instance->pd_info)
7394 dma_free_coherent(&pdev->dev, sizeof(struct MR_PD_INFO),
7395 instance->pd_info, instance->pd_info_h);
7396
7397 if (instance->tgt_prop)
7398 dma_free_coherent(&pdev->dev, sizeof(struct MR_TARGET_PROPERTIES),
7399 instance->tgt_prop, instance->tgt_prop_h);
7400
7401 if (instance->crash_dump_buf)
7402 dma_free_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE,
7403 instance->crash_dump_buf,
7404 instance->crash_dump_h);
7405
7406 if (instance->snapdump_prop)
7407 dma_free_coherent(&pdev->dev,
7408 sizeof(struct MR_SNAPDUMP_PROPERTIES),
7409 instance->snapdump_prop,
7410 instance->snapdump_prop_h);
7411
7412 if (instance->host_device_list_buf)
7413 dma_free_coherent(&pdev->dev,
7414 HOST_DEVICE_LIST_SZ,
7415 instance->host_device_list_buf,
7416 instance->host_device_list_buf_h);
7417
7418 }
7419
7420 /*
7421 * megasas_init_ctrl_params - Initialize controller's instance
7422 * parameters before FW init
7423 * @instance - Adapter soft instance
7424 * @return - void
7425 */
megasas_init_ctrl_params(struct megasas_instance * instance)7426 static inline void megasas_init_ctrl_params(struct megasas_instance *instance)
7427 {
7428 instance->fw_crash_state = UNAVAILABLE;
7429
7430 megasas_poll_wait_aen = 0;
7431 instance->issuepend_done = 1;
7432 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
7433
7434 /*
7435 * Initialize locks and queues
7436 */
7437 INIT_LIST_HEAD(&instance->cmd_pool);
7438 INIT_LIST_HEAD(&instance->internal_reset_pending_q);
7439
7440 atomic_set(&instance->fw_outstanding, 0);
7441 atomic64_set(&instance->total_io_count, 0);
7442
7443 init_waitqueue_head(&instance->int_cmd_wait_q);
7444 init_waitqueue_head(&instance->abort_cmd_wait_q);
7445
7446 mutex_init(&instance->crashdump_lock);
7447 spin_lock_init(&instance->mfi_pool_lock);
7448 spin_lock_init(&instance->hba_lock);
7449 spin_lock_init(&instance->stream_lock);
7450 spin_lock_init(&instance->completion_lock);
7451
7452 mutex_init(&instance->reset_mutex);
7453
7454 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
7455 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY))
7456 instance->flag_ieee = 1;
7457
7458 instance->flag = 0;
7459 instance->unload = 1;
7460 instance->last_time = 0;
7461 instance->disableOnlineCtrlReset = 1;
7462 instance->UnevenSpanSupport = 0;
7463 instance->smp_affinity_enable = smp_affinity_enable ? true : false;
7464 instance->msix_load_balance = false;
7465
7466 if (instance->adapter_type != MFI_SERIES)
7467 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
7468 else
7469 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
7470 }
7471
7472 /**
7473 * megasas_probe_one - PCI hotplug entry point
7474 * @pdev: PCI device structure
7475 * @id: PCI ids of supported hotplugged adapter
7476 */
megasas_probe_one(struct pci_dev * pdev,const struct pci_device_id * id)7477 static int megasas_probe_one(struct pci_dev *pdev,
7478 const struct pci_device_id *id)
7479 {
7480 int rval, pos;
7481 struct Scsi_Host *host;
7482 struct megasas_instance *instance;
7483 u16 control = 0;
7484
7485 switch (pdev->device) {
7486 case PCI_DEVICE_ID_LSI_AERO_10E0:
7487 case PCI_DEVICE_ID_LSI_AERO_10E3:
7488 case PCI_DEVICE_ID_LSI_AERO_10E4:
7489 case PCI_DEVICE_ID_LSI_AERO_10E7:
7490 dev_err(&pdev->dev, "Adapter is in non secure mode\n");
7491 return 1;
7492 case PCI_DEVICE_ID_LSI_AERO_10E1:
7493 case PCI_DEVICE_ID_LSI_AERO_10E5:
7494 dev_info(&pdev->dev, "Adapter is in configurable secure mode\n");
7495 break;
7496 }
7497
7498 /* Reset MSI-X in the kdump kernel */
7499 if (reset_devices) {
7500 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
7501 if (pos) {
7502 pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS,
7503 &control);
7504 if (control & PCI_MSIX_FLAGS_ENABLE) {
7505 dev_info(&pdev->dev, "resetting MSI-X\n");
7506 pci_write_config_word(pdev,
7507 pos + PCI_MSIX_FLAGS,
7508 control &
7509 ~PCI_MSIX_FLAGS_ENABLE);
7510 }
7511 }
7512 }
7513
7514 /*
7515 * PCI prepping: enable device set bus mastering and dma mask
7516 */
7517 rval = pci_enable_device_mem(pdev);
7518
7519 if (rval) {
7520 return rval;
7521 }
7522
7523 pci_set_master(pdev);
7524
7525 host = scsi_host_alloc(&megasas_template,
7526 sizeof(struct megasas_instance));
7527
7528 if (!host) {
7529 dev_printk(KERN_DEBUG, &pdev->dev, "scsi_host_alloc failed\n");
7530 goto fail_alloc_instance;
7531 }
7532
7533 instance = (struct megasas_instance *)host->hostdata;
7534 memset(instance, 0, sizeof(*instance));
7535 atomic_set(&instance->fw_reset_no_pci_access, 0);
7536
7537 /*
7538 * Initialize PCI related and misc parameters
7539 */
7540 instance->pdev = pdev;
7541 instance->host = host;
7542 instance->unique_id = pci_dev_id(pdev);
7543 instance->init_id = MEGASAS_DEFAULT_INIT_ID;
7544
7545 megasas_set_adapter_type(instance);
7546
7547 /*
7548 * Initialize MFI Firmware
7549 */
7550 if (megasas_init_fw(instance))
7551 goto fail_init_mfi;
7552
7553 if (instance->requestorId) {
7554 if (instance->PlasmaFW111) {
7555 instance->vf_affiliation_111 =
7556 dma_alloc_coherent(&pdev->dev,
7557 sizeof(struct MR_LD_VF_AFFILIATION_111),
7558 &instance->vf_affiliation_111_h,
7559 GFP_KERNEL);
7560 if (!instance->vf_affiliation_111)
7561 dev_warn(&pdev->dev, "Can't allocate "
7562 "memory for VF affiliation buffer\n");
7563 } else {
7564 instance->vf_affiliation =
7565 dma_alloc_coherent(&pdev->dev,
7566 (MAX_LOGICAL_DRIVES + 1) *
7567 sizeof(struct MR_LD_VF_AFFILIATION),
7568 &instance->vf_affiliation_h,
7569 GFP_KERNEL);
7570 if (!instance->vf_affiliation)
7571 dev_warn(&pdev->dev, "Can't allocate "
7572 "memory for VF affiliation buffer\n");
7573 }
7574 }
7575
7576 /*
7577 * Store instance in PCI softstate
7578 */
7579 pci_set_drvdata(pdev, instance);
7580
7581 /*
7582 * Add this controller to megasas_mgmt_info structure so that it
7583 * can be exported to management applications
7584 */
7585 megasas_mgmt_info.count++;
7586 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
7587 megasas_mgmt_info.max_index++;
7588
7589 /*
7590 * Register with SCSI mid-layer
7591 */
7592 if (megasas_io_attach(instance))
7593 goto fail_io_attach;
7594
7595 instance->unload = 0;
7596 /*
7597 * Trigger SCSI to scan our drives
7598 */
7599 if (!instance->enable_fw_dev_list ||
7600 (instance->host_device_list_buf->count > 0))
7601 scsi_scan_host(host);
7602
7603 /*
7604 * Initiate AEN (Asynchronous Event Notification)
7605 */
7606 if (megasas_start_aen(instance)) {
7607 dev_printk(KERN_DEBUG, &pdev->dev, "start aen failed\n");
7608 goto fail_start_aen;
7609 }
7610
7611 megasas_setup_debugfs(instance);
7612
7613 /* Get current SR-IOV LD/VF affiliation */
7614 if (instance->requestorId)
7615 megasas_get_ld_vf_affiliation(instance, 1);
7616
7617 return 0;
7618
7619 fail_start_aen:
7620 instance->unload = 1;
7621 scsi_remove_host(instance->host);
7622 fail_io_attach:
7623 megasas_mgmt_info.count--;
7624 megasas_mgmt_info.max_index--;
7625 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
7626
7627 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7628 timer_delete_sync(&instance->sriov_heartbeat_timer);
7629
7630 instance->instancet->disable_intr(instance);
7631 megasas_destroy_irqs(instance);
7632
7633 if (instance->adapter_type != MFI_SERIES)
7634 megasas_release_fusion(instance);
7635 else
7636 megasas_release_mfi(instance);
7637
7638 if (instance->msix_vectors)
7639 pci_free_irq_vectors(instance->pdev);
7640 instance->msix_vectors = 0;
7641
7642 if (instance->fw_crash_state != UNAVAILABLE)
7643 megasas_free_host_crash_buffer(instance);
7644
7645 if (instance->adapter_type != MFI_SERIES)
7646 megasas_fusion_stop_watchdog(instance);
7647 fail_init_mfi:
7648 scsi_host_put(host);
7649 fail_alloc_instance:
7650 pci_disable_device(pdev);
7651
7652 return -ENODEV;
7653 }
7654
7655 /**
7656 * megasas_flush_cache - Requests FW to flush all its caches
7657 * @instance: Adapter soft state
7658 */
megasas_flush_cache(struct megasas_instance * instance)7659 static void megasas_flush_cache(struct megasas_instance *instance)
7660 {
7661 struct megasas_cmd *cmd;
7662 struct megasas_dcmd_frame *dcmd;
7663
7664 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
7665 return;
7666
7667 cmd = megasas_get_cmd(instance);
7668
7669 if (!cmd)
7670 return;
7671
7672 dcmd = &cmd->frame->dcmd;
7673
7674 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
7675
7676 dcmd->cmd = MFI_CMD_DCMD;
7677 dcmd->cmd_status = 0x0;
7678 dcmd->sge_count = 0;
7679 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
7680 dcmd->timeout = 0;
7681 dcmd->pad_0 = 0;
7682 dcmd->data_xfer_len = 0;
7683 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH);
7684 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
7685
7686 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
7687 != DCMD_SUCCESS) {
7688 dev_err(&instance->pdev->dev,
7689 "return from %s %d\n", __func__, __LINE__);
7690 return;
7691 }
7692
7693 megasas_return_cmd(instance, cmd);
7694 }
7695
7696 /**
7697 * megasas_shutdown_controller - Instructs FW to shutdown the controller
7698 * @instance: Adapter soft state
7699 * @opcode: Shutdown/Hibernate
7700 */
megasas_shutdown_controller(struct megasas_instance * instance,u32 opcode)7701 static void megasas_shutdown_controller(struct megasas_instance *instance,
7702 u32 opcode)
7703 {
7704 struct megasas_cmd *cmd;
7705 struct megasas_dcmd_frame *dcmd;
7706
7707 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
7708 return;
7709
7710 cmd = megasas_get_cmd(instance);
7711
7712 if (!cmd)
7713 return;
7714
7715 if (instance->aen_cmd)
7716 megasas_issue_blocked_abort_cmd(instance,
7717 instance->aen_cmd, MFI_IO_TIMEOUT_SECS);
7718 if (instance->map_update_cmd)
7719 megasas_issue_blocked_abort_cmd(instance,
7720 instance->map_update_cmd, MFI_IO_TIMEOUT_SECS);
7721 if (instance->jbod_seq_cmd)
7722 megasas_issue_blocked_abort_cmd(instance,
7723 instance->jbod_seq_cmd, MFI_IO_TIMEOUT_SECS);
7724
7725 dcmd = &cmd->frame->dcmd;
7726
7727 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
7728
7729 dcmd->cmd = MFI_CMD_DCMD;
7730 dcmd->cmd_status = 0x0;
7731 dcmd->sge_count = 0;
7732 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
7733 dcmd->timeout = 0;
7734 dcmd->pad_0 = 0;
7735 dcmd->data_xfer_len = 0;
7736 dcmd->opcode = cpu_to_le32(opcode);
7737
7738 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
7739 != DCMD_SUCCESS) {
7740 dev_err(&instance->pdev->dev,
7741 "return from %s %d\n", __func__, __LINE__);
7742 return;
7743 }
7744
7745 megasas_return_cmd(instance, cmd);
7746 }
7747
7748 /**
7749 * megasas_suspend - driver suspend entry point
7750 * @dev: Device structure
7751 */
7752 static int __maybe_unused
megasas_suspend(struct device * dev)7753 megasas_suspend(struct device *dev)
7754 {
7755 struct megasas_instance *instance;
7756
7757 instance = dev_get_drvdata(dev);
7758
7759 if (!instance)
7760 return 0;
7761
7762 instance->unload = 1;
7763
7764 dev_info(dev, "%s is called\n", __func__);
7765
7766 /* Shutdown SR-IOV heartbeat timer */
7767 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7768 timer_delete_sync(&instance->sriov_heartbeat_timer);
7769
7770 /* Stop the FW fault detection watchdog */
7771 if (instance->adapter_type != MFI_SERIES)
7772 megasas_fusion_stop_watchdog(instance);
7773
7774 megasas_flush_cache(instance);
7775 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
7776
7777 /* cancel the delayed work if this work still in queue */
7778 if (instance->ev != NULL) {
7779 struct megasas_aen_event *ev = instance->ev;
7780 cancel_delayed_work_sync(&ev->hotplug_work);
7781 instance->ev = NULL;
7782 }
7783
7784 tasklet_kill(&instance->isr_tasklet);
7785
7786 pci_set_drvdata(instance->pdev, instance);
7787 instance->instancet->disable_intr(instance);
7788
7789 megasas_destroy_irqs(instance);
7790
7791 if (instance->msix_vectors)
7792 pci_free_irq_vectors(instance->pdev);
7793
7794 return 0;
7795 }
7796
7797 /**
7798 * megasas_resume- driver resume entry point
7799 * @dev: Device structure
7800 */
7801 static int __maybe_unused
megasas_resume(struct device * dev)7802 megasas_resume(struct device *dev)
7803 {
7804 int rval;
7805 struct Scsi_Host *host;
7806 struct megasas_instance *instance;
7807 u32 status_reg;
7808
7809 instance = dev_get_drvdata(dev);
7810
7811 if (!instance)
7812 return 0;
7813
7814 host = instance->host;
7815
7816 dev_info(dev, "%s is called\n", __func__);
7817
7818 /*
7819 * We expect the FW state to be READY
7820 */
7821
7822 if (megasas_transition_to_ready(instance, 0)) {
7823 dev_info(&instance->pdev->dev,
7824 "Failed to transition controller to ready from %s!\n",
7825 __func__);
7826 if (instance->adapter_type != MFI_SERIES) {
7827 status_reg =
7828 instance->instancet->read_fw_status_reg(instance);
7829 if (!(status_reg & MFI_RESET_ADAPTER) ||
7830 ((megasas_adp_reset_wait_for_ready
7831 (instance, true, 0)) == FAILED))
7832 goto fail_ready_state;
7833 } else {
7834 atomic_set(&instance->fw_reset_no_pci_access, 1);
7835 instance->instancet->adp_reset
7836 (instance, instance->reg_set);
7837 atomic_set(&instance->fw_reset_no_pci_access, 0);
7838
7839 /* waiting for about 30 seconds before retry */
7840 ssleep(30);
7841
7842 if (megasas_transition_to_ready(instance, 0))
7843 goto fail_ready_state;
7844 }
7845
7846 dev_info(&instance->pdev->dev,
7847 "FW restarted successfully from %s!\n",
7848 __func__);
7849 }
7850 if (megasas_set_dma_mask(instance))
7851 goto fail_set_dma_mask;
7852
7853 /*
7854 * Initialize MFI Firmware
7855 */
7856
7857 atomic_set(&instance->fw_outstanding, 0);
7858 atomic_set(&instance->ldio_outstanding, 0);
7859
7860 /* Now re-enable MSI-X */
7861 if (instance->msix_vectors)
7862 megasas_alloc_irq_vectors(instance);
7863
7864 if (!instance->msix_vectors) {
7865 rval = pci_alloc_irq_vectors(instance->pdev, 1, 1,
7866 PCI_IRQ_INTX);
7867 if (rval < 0)
7868 goto fail_reenable_msix;
7869 }
7870
7871 megasas_setup_reply_map(instance);
7872
7873 if (instance->adapter_type != MFI_SERIES) {
7874 megasas_reset_reply_desc(instance);
7875 if (megasas_ioc_init_fusion(instance)) {
7876 megasas_free_cmds(instance);
7877 megasas_free_cmds_fusion(instance);
7878 goto fail_init_mfi;
7879 }
7880 if (!megasas_get_map_info(instance))
7881 megasas_sync_map_info(instance);
7882 } else {
7883 *instance->producer = 0;
7884 *instance->consumer = 0;
7885 if (megasas_issue_init_mfi(instance))
7886 goto fail_init_mfi;
7887 }
7888
7889 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS)
7890 goto fail_init_mfi;
7891
7892 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
7893 (unsigned long)instance);
7894
7895 if (instance->msix_vectors ?
7896 megasas_setup_irqs_msix(instance, 0) :
7897 megasas_setup_irqs_ioapic(instance))
7898 goto fail_init_mfi;
7899
7900 if (instance->adapter_type != MFI_SERIES)
7901 megasas_setup_irq_poll(instance);
7902
7903 /* Re-launch SR-IOV heartbeat timer */
7904 if (instance->requestorId) {
7905 if (!megasas_sriov_start_heartbeat(instance, 0))
7906 megasas_start_timer(instance);
7907 else {
7908 instance->skip_heartbeat_timer_del = 1;
7909 goto fail_init_mfi;
7910 }
7911 }
7912
7913 instance->instancet->enable_intr(instance);
7914 megasas_setup_jbod_map(instance);
7915 instance->unload = 0;
7916
7917 /*
7918 * Initiate AEN (Asynchronous Event Notification)
7919 */
7920 if (megasas_start_aen(instance))
7921 dev_err(&instance->pdev->dev, "Start AEN failed\n");
7922
7923 /* Re-launch FW fault watchdog */
7924 if (instance->adapter_type != MFI_SERIES)
7925 if (megasas_fusion_start_watchdog(instance) != SUCCESS)
7926 goto fail_start_watchdog;
7927
7928 return 0;
7929
7930 fail_start_watchdog:
7931 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7932 timer_delete_sync(&instance->sriov_heartbeat_timer);
7933 fail_init_mfi:
7934 megasas_free_ctrl_dma_buffers(instance);
7935 megasas_free_ctrl_mem(instance);
7936 scsi_host_put(host);
7937
7938 fail_reenable_msix:
7939 fail_set_dma_mask:
7940 fail_ready_state:
7941
7942 return -ENODEV;
7943 }
7944
7945 static inline int
megasas_wait_for_adapter_operational(struct megasas_instance * instance)7946 megasas_wait_for_adapter_operational(struct megasas_instance *instance)
7947 {
7948 int wait_time = MEGASAS_RESET_WAIT_TIME * 2;
7949 int i;
7950 u8 adp_state;
7951
7952 for (i = 0; i < wait_time; i++) {
7953 adp_state = atomic_read(&instance->adprecovery);
7954 if ((adp_state == MEGASAS_HBA_OPERATIONAL) ||
7955 (adp_state == MEGASAS_HW_CRITICAL_ERROR))
7956 break;
7957
7958 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL))
7959 dev_notice(&instance->pdev->dev, "waiting for controller reset to finish\n");
7960
7961 msleep(1000);
7962 }
7963
7964 if (adp_state != MEGASAS_HBA_OPERATIONAL) {
7965 dev_info(&instance->pdev->dev,
7966 "%s HBA failed to become operational, adp_state %d\n",
7967 __func__, adp_state);
7968 return 1;
7969 }
7970
7971 return 0;
7972 }
7973
7974 /**
7975 * megasas_detach_one - PCI hot"un"plug entry point
7976 * @pdev: PCI device structure
7977 */
megasas_detach_one(struct pci_dev * pdev)7978 static void megasas_detach_one(struct pci_dev *pdev)
7979 {
7980 int i;
7981 struct Scsi_Host *host;
7982 struct megasas_instance *instance;
7983 struct fusion_context *fusion;
7984 size_t pd_seq_map_sz;
7985
7986 instance = pci_get_drvdata(pdev);
7987
7988 if (!instance)
7989 return;
7990
7991 host = instance->host;
7992 fusion = instance->ctrl_context;
7993
7994 /* Shutdown SR-IOV heartbeat timer */
7995 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7996 timer_delete_sync(&instance->sriov_heartbeat_timer);
7997
7998 /* Stop the FW fault detection watchdog */
7999 if (instance->adapter_type != MFI_SERIES)
8000 megasas_fusion_stop_watchdog(instance);
8001
8002 if (instance->fw_crash_state != UNAVAILABLE)
8003 megasas_free_host_crash_buffer(instance);
8004 scsi_remove_host(instance->host);
8005 instance->unload = 1;
8006
8007 if (megasas_wait_for_adapter_operational(instance))
8008 goto skip_firing_dcmds;
8009
8010 megasas_flush_cache(instance);
8011 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
8012
8013 skip_firing_dcmds:
8014 /* cancel the delayed work if this work still in queue*/
8015 if (instance->ev != NULL) {
8016 struct megasas_aen_event *ev = instance->ev;
8017 cancel_delayed_work_sync(&ev->hotplug_work);
8018 instance->ev = NULL;
8019 }
8020
8021 /* cancel all wait events */
8022 wake_up_all(&instance->int_cmd_wait_q);
8023
8024 tasklet_kill(&instance->isr_tasklet);
8025
8026 /*
8027 * Take the instance off the instance array. Note that we will not
8028 * decrement the max_index. We let this array be sparse array
8029 */
8030 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
8031 if (megasas_mgmt_info.instance[i] == instance) {
8032 megasas_mgmt_info.count--;
8033 megasas_mgmt_info.instance[i] = NULL;
8034
8035 break;
8036 }
8037 }
8038
8039 instance->instancet->disable_intr(instance);
8040
8041 megasas_destroy_irqs(instance);
8042
8043 if (instance->msix_vectors)
8044 pci_free_irq_vectors(instance->pdev);
8045
8046 if (instance->adapter_type >= VENTURA_SERIES) {
8047 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i)
8048 kfree(fusion->stream_detect_by_ld[i]);
8049 kfree(fusion->stream_detect_by_ld);
8050 fusion->stream_detect_by_ld = NULL;
8051 }
8052
8053
8054 if (instance->adapter_type != MFI_SERIES) {
8055 megasas_release_fusion(instance);
8056 pd_seq_map_sz =
8057 struct_size_t(struct MR_PD_CFG_SEQ_NUM_SYNC,
8058 seq, MAX_PHYSICAL_DEVICES);
8059 for (i = 0; i < 2 ; i++) {
8060 if (fusion->ld_map[i])
8061 dma_free_coherent(&instance->pdev->dev,
8062 fusion->max_map_sz,
8063 fusion->ld_map[i],
8064 fusion->ld_map_phys[i]);
8065 if (fusion->ld_drv_map[i]) {
8066 if (is_vmalloc_addr(fusion->ld_drv_map[i]))
8067 vfree(fusion->ld_drv_map[i]);
8068 else
8069 free_pages((ulong)fusion->ld_drv_map[i],
8070 fusion->drv_map_pages);
8071 }
8072
8073 if (fusion->pd_seq_sync[i])
8074 dma_free_coherent(&instance->pdev->dev,
8075 pd_seq_map_sz,
8076 fusion->pd_seq_sync[i],
8077 fusion->pd_seq_phys[i]);
8078 }
8079 } else {
8080 megasas_release_mfi(instance);
8081 }
8082
8083 if (instance->vf_affiliation)
8084 dma_free_coherent(&pdev->dev, (MAX_LOGICAL_DRIVES + 1) *
8085 sizeof(struct MR_LD_VF_AFFILIATION),
8086 instance->vf_affiliation,
8087 instance->vf_affiliation_h);
8088
8089 if (instance->vf_affiliation_111)
8090 dma_free_coherent(&pdev->dev,
8091 sizeof(struct MR_LD_VF_AFFILIATION_111),
8092 instance->vf_affiliation_111,
8093 instance->vf_affiliation_111_h);
8094
8095 if (instance->hb_host_mem)
8096 dma_free_coherent(&pdev->dev, sizeof(struct MR_CTRL_HB_HOST_MEM),
8097 instance->hb_host_mem,
8098 instance->hb_host_mem_h);
8099
8100 megasas_free_ctrl_dma_buffers(instance);
8101
8102 megasas_free_ctrl_mem(instance);
8103
8104 megasas_destroy_debugfs(instance);
8105
8106 scsi_host_put(host);
8107
8108 pci_disable_device(pdev);
8109 }
8110
8111 /**
8112 * megasas_shutdown - Shutdown entry point
8113 * @pdev: PCI device structure
8114 */
megasas_shutdown(struct pci_dev * pdev)8115 static void megasas_shutdown(struct pci_dev *pdev)
8116 {
8117 struct megasas_instance *instance = pci_get_drvdata(pdev);
8118
8119 if (!instance)
8120 return;
8121
8122 instance->unload = 1;
8123
8124 if (megasas_wait_for_adapter_operational(instance))
8125 goto skip_firing_dcmds;
8126
8127 megasas_flush_cache(instance);
8128 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
8129
8130 skip_firing_dcmds:
8131 instance->instancet->disable_intr(instance);
8132 megasas_destroy_irqs(instance);
8133
8134 if (instance->msix_vectors)
8135 pci_free_irq_vectors(instance->pdev);
8136 }
8137
8138 /*
8139 * megasas_mgmt_open - char node "open" entry point
8140 * @inode: char node inode
8141 * @filep: char node file
8142 */
megasas_mgmt_open(struct inode * inode,struct file * filep)8143 static int megasas_mgmt_open(struct inode *inode, struct file *filep)
8144 {
8145 /*
8146 * Allow only those users with admin rights
8147 */
8148 if (!capable(CAP_SYS_ADMIN))
8149 return -EACCES;
8150
8151 return 0;
8152 }
8153
8154 /*
8155 * megasas_mgmt_fasync - Async notifier registration from applications
8156 * @fd: char node file descriptor number
8157 * @filep: char node file
8158 * @mode: notifier on/off
8159 *
8160 * This function adds the calling process to a driver global queue. When an
8161 * event occurs, SIGIO will be sent to all processes in this queue.
8162 */
megasas_mgmt_fasync(int fd,struct file * filep,int mode)8163 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
8164 {
8165 int rc;
8166
8167 mutex_lock(&megasas_async_queue_mutex);
8168
8169 rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
8170
8171 mutex_unlock(&megasas_async_queue_mutex);
8172
8173 if (rc >= 0) {
8174 /* For sanity check when we get ioctl */
8175 filep->private_data = filep;
8176 return 0;
8177 }
8178
8179 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
8180
8181 return rc;
8182 }
8183
8184 /*
8185 * megasas_mgmt_poll - char node "poll" entry point
8186 * @filep: char node file
8187 * @wait: Events to poll for
8188 */
megasas_mgmt_poll(struct file * file,poll_table * wait)8189 static __poll_t megasas_mgmt_poll(struct file *file, poll_table *wait)
8190 {
8191 __poll_t mask;
8192 unsigned long flags;
8193
8194 poll_wait(file, &megasas_poll_wait, wait);
8195 spin_lock_irqsave(&poll_aen_lock, flags);
8196 if (megasas_poll_wait_aen)
8197 mask = (EPOLLIN | EPOLLRDNORM);
8198 else
8199 mask = 0;
8200 megasas_poll_wait_aen = 0;
8201 spin_unlock_irqrestore(&poll_aen_lock, flags);
8202 return mask;
8203 }
8204
8205 /*
8206 * megasas_set_crash_dump_params_ioctl:
8207 * Send CRASH_DUMP_MODE DCMD to all controllers
8208 * @cmd: MFI command frame
8209 */
8210
megasas_set_crash_dump_params_ioctl(struct megasas_cmd * cmd)8211 static int megasas_set_crash_dump_params_ioctl(struct megasas_cmd *cmd)
8212 {
8213 struct megasas_instance *local_instance;
8214 int i, error = 0;
8215 int crash_support;
8216
8217 crash_support = cmd->frame->dcmd.mbox.w[0];
8218
8219 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
8220 local_instance = megasas_mgmt_info.instance[i];
8221 if (local_instance && local_instance->crash_dump_drv_support) {
8222 if ((atomic_read(&local_instance->adprecovery) ==
8223 MEGASAS_HBA_OPERATIONAL) &&
8224 !megasas_set_crash_dump_params(local_instance,
8225 crash_support)) {
8226 local_instance->crash_dump_app_support =
8227 crash_support;
8228 dev_info(&local_instance->pdev->dev,
8229 "Application firmware crash "
8230 "dump mode set success\n");
8231 error = 0;
8232 } else {
8233 dev_info(&local_instance->pdev->dev,
8234 "Application firmware crash "
8235 "dump mode set failed\n");
8236 error = -1;
8237 }
8238 }
8239 }
8240 return error;
8241 }
8242
8243 /**
8244 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW
8245 * @instance: Adapter soft state
8246 * @user_ioc: User's ioctl packet
8247 * @ioc: ioctl packet
8248 */
8249 static int
megasas_mgmt_fw_ioctl(struct megasas_instance * instance,struct megasas_iocpacket __user * user_ioc,struct megasas_iocpacket * ioc)8250 megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
8251 struct megasas_iocpacket __user * user_ioc,
8252 struct megasas_iocpacket *ioc)
8253 {
8254 struct megasas_sge64 *kern_sge64 = NULL;
8255 struct megasas_sge32 *kern_sge32 = NULL;
8256 struct megasas_cmd *cmd;
8257 void *kbuff_arr[MAX_IOCTL_SGE];
8258 dma_addr_t buf_handle = 0;
8259 int error = 0, i;
8260 void *sense = NULL;
8261 dma_addr_t sense_handle;
8262 void *sense_ptr;
8263 u32 opcode = 0;
8264 int ret = DCMD_SUCCESS;
8265
8266 memset(kbuff_arr, 0, sizeof(kbuff_arr));
8267
8268 if (ioc->sge_count > MAX_IOCTL_SGE) {
8269 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SGE count [%d] > max limit [%d]\n",
8270 ioc->sge_count, MAX_IOCTL_SGE);
8271 return -EINVAL;
8272 }
8273
8274 if ((ioc->frame.hdr.cmd >= MFI_CMD_OP_COUNT) ||
8275 ((ioc->frame.hdr.cmd == MFI_CMD_NVME) &&
8276 !instance->support_nvme_passthru) ||
8277 ((ioc->frame.hdr.cmd == MFI_CMD_TOOLBOX) &&
8278 !instance->support_pci_lane_margining)) {
8279 dev_err(&instance->pdev->dev,
8280 "Received invalid ioctl command 0x%x\n",
8281 ioc->frame.hdr.cmd);
8282 return -ENOTSUPP;
8283 }
8284
8285 cmd = megasas_get_cmd(instance);
8286 if (!cmd) {
8287 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a cmd packet\n");
8288 return -ENOMEM;
8289 }
8290
8291 /*
8292 * User's IOCTL packet has 2 frames (maximum). Copy those two
8293 * frames into our cmd's frames. cmd->frame's context will get
8294 * overwritten when we copy from user's frames. So set that value
8295 * alone separately
8296 */
8297 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
8298 cmd->frame->hdr.context = cpu_to_le32(cmd->index);
8299 cmd->frame->hdr.pad_0 = 0;
8300
8301 cmd->frame->hdr.flags &= (~MFI_FRAME_IEEE);
8302
8303 if (instance->consistent_mask_64bit)
8304 cmd->frame->hdr.flags |= cpu_to_le16((MFI_FRAME_SGL64 |
8305 MFI_FRAME_SENSE64));
8306 else
8307 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_SGL64 |
8308 MFI_FRAME_SENSE64));
8309
8310 if (cmd->frame->hdr.cmd == MFI_CMD_DCMD)
8311 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
8312
8313 if (opcode == MR_DCMD_CTRL_SHUTDOWN) {
8314 mutex_lock(&instance->reset_mutex);
8315 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS) {
8316 megasas_return_cmd(instance, cmd);
8317 mutex_unlock(&instance->reset_mutex);
8318 return -1;
8319 }
8320 mutex_unlock(&instance->reset_mutex);
8321 }
8322
8323 if (opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) {
8324 error = megasas_set_crash_dump_params_ioctl(cmd);
8325 megasas_return_cmd(instance, cmd);
8326 return error;
8327 }
8328
8329 /*
8330 * The management interface between applications and the fw uses
8331 * MFI frames. E.g, RAID configuration changes, LD property changes
8332 * etc are accomplishes through different kinds of MFI frames. The
8333 * driver needs to care only about substituting user buffers with
8334 * kernel buffers in SGLs. The location of SGL is embedded in the
8335 * struct iocpacket itself.
8336 */
8337 if (instance->consistent_mask_64bit)
8338 kern_sge64 = (struct megasas_sge64 *)
8339 ((unsigned long)cmd->frame + ioc->sgl_off);
8340 else
8341 kern_sge32 = (struct megasas_sge32 *)
8342 ((unsigned long)cmd->frame + ioc->sgl_off);
8343
8344 /*
8345 * For each user buffer, create a mirror buffer and copy in
8346 */
8347 for (i = 0; i < ioc->sge_count; i++) {
8348 if (!ioc->sgl[i].iov_len)
8349 continue;
8350
8351 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
8352 ioc->sgl[i].iov_len,
8353 &buf_handle, GFP_KERNEL);
8354 if (!kbuff_arr[i]) {
8355 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc "
8356 "kernel SGL buffer for IOCTL\n");
8357 error = -ENOMEM;
8358 goto out;
8359 }
8360
8361 /*
8362 * We don't change the dma_coherent_mask, so
8363 * dma_alloc_coherent only returns 32bit addresses
8364 */
8365 if (instance->consistent_mask_64bit) {
8366 kern_sge64[i].phys_addr = cpu_to_le64(buf_handle);
8367 kern_sge64[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
8368 } else {
8369 kern_sge32[i].phys_addr = cpu_to_le32(buf_handle);
8370 kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
8371 }
8372
8373 /*
8374 * We created a kernel buffer corresponding to the
8375 * user buffer. Now copy in from the user buffer
8376 */
8377 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
8378 (u32) (ioc->sgl[i].iov_len))) {
8379 error = -EFAULT;
8380 goto out;
8381 }
8382 }
8383
8384 if (ioc->sense_len) {
8385 /* make sure the pointer is part of the frame */
8386 if (ioc->sense_off >
8387 (sizeof(union megasas_frame) - sizeof(__le64))) {
8388 error = -EINVAL;
8389 goto out;
8390 }
8391
8392 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
8393 &sense_handle, GFP_KERNEL);
8394 if (!sense) {
8395 error = -ENOMEM;
8396 goto out;
8397 }
8398
8399 /* always store 64 bits regardless of addressing */
8400 sense_ptr = (void *)cmd->frame + ioc->sense_off;
8401 put_unaligned_le64(sense_handle, sense_ptr);
8402 }
8403
8404 /*
8405 * Set the sync_cmd flag so that the ISR knows not to complete this
8406 * cmd to the SCSI mid-layer
8407 */
8408 cmd->sync_cmd = 1;
8409
8410 ret = megasas_issue_blocked_cmd(instance, cmd, 0);
8411 switch (ret) {
8412 case DCMD_INIT:
8413 case DCMD_BUSY:
8414 cmd->sync_cmd = 0;
8415 dev_err(&instance->pdev->dev,
8416 "return -EBUSY from %s %d cmd 0x%x opcode 0x%x cmd->cmd_status_drv 0x%x\n",
8417 __func__, __LINE__, cmd->frame->hdr.cmd, opcode,
8418 cmd->cmd_status_drv);
8419 error = -EBUSY;
8420 goto out;
8421 }
8422
8423 cmd->sync_cmd = 0;
8424
8425 if (instance->unload == 1) {
8426 dev_info(&instance->pdev->dev, "Driver unload is in progress "
8427 "don't submit data to application\n");
8428 goto out;
8429 }
8430 /*
8431 * copy out the kernel buffers to user buffers
8432 */
8433 for (i = 0; i < ioc->sge_count; i++) {
8434 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
8435 ioc->sgl[i].iov_len)) {
8436 error = -EFAULT;
8437 goto out;
8438 }
8439 }
8440
8441 /*
8442 * copy out the sense
8443 */
8444 if (ioc->sense_len) {
8445 void __user *uptr;
8446 /*
8447 * sense_ptr points to the location that has the user
8448 * sense buffer address
8449 */
8450 sense_ptr = (void *)ioc->frame.raw + ioc->sense_off;
8451 if (in_compat_syscall())
8452 uptr = compat_ptr(get_unaligned((compat_uptr_t *)
8453 sense_ptr));
8454 else
8455 uptr = get_unaligned((void __user **)sense_ptr);
8456
8457 if (copy_to_user(uptr, sense, ioc->sense_len)) {
8458 dev_err(&instance->pdev->dev, "Failed to copy out to user "
8459 "sense data\n");
8460 error = -EFAULT;
8461 goto out;
8462 }
8463 }
8464
8465 /*
8466 * copy the status codes returned by the fw
8467 */
8468 if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
8469 &cmd->frame->hdr.cmd_status, sizeof(u8))) {
8470 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error copying out cmd_status\n");
8471 error = -EFAULT;
8472 }
8473
8474 out:
8475 if (sense) {
8476 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
8477 sense, sense_handle);
8478 }
8479
8480 for (i = 0; i < ioc->sge_count; i++) {
8481 if (kbuff_arr[i]) {
8482 if (instance->consistent_mask_64bit)
8483 dma_free_coherent(&instance->pdev->dev,
8484 le32_to_cpu(kern_sge64[i].length),
8485 kbuff_arr[i],
8486 le64_to_cpu(kern_sge64[i].phys_addr));
8487 else
8488 dma_free_coherent(&instance->pdev->dev,
8489 le32_to_cpu(kern_sge32[i].length),
8490 kbuff_arr[i],
8491 le32_to_cpu(kern_sge32[i].phys_addr));
8492 kbuff_arr[i] = NULL;
8493 }
8494 }
8495
8496 megasas_return_cmd(instance, cmd);
8497 return error;
8498 }
8499
8500 static struct megasas_iocpacket *
megasas_compat_iocpacket_get_user(void __user * arg)8501 megasas_compat_iocpacket_get_user(void __user *arg)
8502 {
8503 struct megasas_iocpacket *ioc;
8504 struct compat_megasas_iocpacket __user *cioc = arg;
8505 size_t size;
8506 int err = -EFAULT;
8507 int i;
8508
8509 ioc = kzalloc_obj(*ioc);
8510 if (!ioc)
8511 return ERR_PTR(-ENOMEM);
8512 size = offsetof(struct megasas_iocpacket, frame) + sizeof(ioc->frame);
8513 if (copy_from_user(ioc, arg, size))
8514 goto out;
8515
8516 for (i = 0; i < MAX_IOCTL_SGE; i++) {
8517 compat_uptr_t iov_base;
8518
8519 if (get_user(iov_base, &cioc->sgl[i].iov_base) ||
8520 get_user(ioc->sgl[i].iov_len, &cioc->sgl[i].iov_len))
8521 goto out;
8522
8523 ioc->sgl[i].iov_base = compat_ptr(iov_base);
8524 }
8525
8526 return ioc;
8527 out:
8528 kfree(ioc);
8529 return ERR_PTR(err);
8530 }
8531
megasas_mgmt_ioctl_fw(struct file * file,unsigned long arg)8532 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
8533 {
8534 struct megasas_iocpacket __user *user_ioc =
8535 (struct megasas_iocpacket __user *)arg;
8536 struct megasas_iocpacket *ioc;
8537 struct megasas_instance *instance;
8538 int error;
8539
8540 if (in_compat_syscall())
8541 ioc = megasas_compat_iocpacket_get_user(user_ioc);
8542 else
8543 ioc = memdup_user(user_ioc, sizeof(struct megasas_iocpacket));
8544
8545 if (IS_ERR(ioc))
8546 return PTR_ERR(ioc);
8547
8548 instance = megasas_lookup_instance(ioc->host_no);
8549 if (!instance) {
8550 error = -ENODEV;
8551 goto out_kfree_ioc;
8552 }
8553
8554 /* Block ioctls in VF mode */
8555 if (instance->requestorId && !allow_vf_ioctls) {
8556 error = -ENODEV;
8557 goto out_kfree_ioc;
8558 }
8559
8560 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
8561 dev_err(&instance->pdev->dev, "Controller in crit error\n");
8562 error = -ENODEV;
8563 goto out_kfree_ioc;
8564 }
8565
8566 if (instance->unload == 1) {
8567 error = -ENODEV;
8568 goto out_kfree_ioc;
8569 }
8570
8571 if (down_interruptible(&instance->ioctl_sem)) {
8572 error = -ERESTARTSYS;
8573 goto out_kfree_ioc;
8574 }
8575
8576 if (megasas_wait_for_adapter_operational(instance)) {
8577 error = -ENODEV;
8578 goto out_up;
8579 }
8580
8581 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
8582 out_up:
8583 up(&instance->ioctl_sem);
8584
8585 out_kfree_ioc:
8586 kfree(ioc);
8587 return error;
8588 }
8589
megasas_mgmt_ioctl_aen(struct file * file,unsigned long arg)8590 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
8591 {
8592 struct megasas_instance *instance;
8593 struct megasas_aen aen;
8594 int error;
8595
8596 if (file->private_data != file) {
8597 printk(KERN_DEBUG "megasas: fasync_helper was not "
8598 "called first\n");
8599 return -EINVAL;
8600 }
8601
8602 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
8603 return -EFAULT;
8604
8605 instance = megasas_lookup_instance(aen.host_no);
8606
8607 if (!instance)
8608 return -ENODEV;
8609
8610 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
8611 return -ENODEV;
8612 }
8613
8614 if (instance->unload == 1) {
8615 return -ENODEV;
8616 }
8617
8618 if (megasas_wait_for_adapter_operational(instance))
8619 return -ENODEV;
8620
8621 mutex_lock(&instance->reset_mutex);
8622 error = megasas_register_aen(instance, aen.seq_num,
8623 aen.class_locale_word);
8624 mutex_unlock(&instance->reset_mutex);
8625 return error;
8626 }
8627
8628 /**
8629 * megasas_mgmt_ioctl - char node ioctl entry point
8630 * @file: char device file pointer
8631 * @cmd: ioctl command
8632 * @arg: ioctl command arguments address
8633 */
8634 static long
megasas_mgmt_ioctl(struct file * file,unsigned int cmd,unsigned long arg)8635 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
8636 {
8637 switch (cmd) {
8638 case MEGASAS_IOC_FIRMWARE:
8639 return megasas_mgmt_ioctl_fw(file, arg);
8640
8641 case MEGASAS_IOC_GET_AEN:
8642 return megasas_mgmt_ioctl_aen(file, arg);
8643 }
8644
8645 return -ENOTTY;
8646 }
8647
8648 #ifdef CONFIG_COMPAT
8649 static long
megasas_mgmt_compat_ioctl(struct file * file,unsigned int cmd,unsigned long arg)8650 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
8651 unsigned long arg)
8652 {
8653 switch (cmd) {
8654 case MEGASAS_IOC_FIRMWARE32:
8655 return megasas_mgmt_ioctl_fw(file, arg);
8656 case MEGASAS_IOC_GET_AEN:
8657 return megasas_mgmt_ioctl_aen(file, arg);
8658 }
8659
8660 return -ENOTTY;
8661 }
8662 #endif
8663
8664 /*
8665 * File operations structure for management interface
8666 */
8667 static const struct file_operations megasas_mgmt_fops = {
8668 .owner = THIS_MODULE,
8669 .open = megasas_mgmt_open,
8670 .fasync = megasas_mgmt_fasync,
8671 .unlocked_ioctl = megasas_mgmt_ioctl,
8672 .poll = megasas_mgmt_poll,
8673 #ifdef CONFIG_COMPAT
8674 .compat_ioctl = megasas_mgmt_compat_ioctl,
8675 #endif
8676 .llseek = noop_llseek,
8677 };
8678
8679 static SIMPLE_DEV_PM_OPS(megasas_pm_ops, megasas_suspend, megasas_resume);
8680
8681 /*
8682 * PCI hotplug support registration structure
8683 */
8684 static struct pci_driver megasas_pci_driver = {
8685
8686 .name = "megaraid_sas",
8687 .id_table = megasas_pci_table,
8688 .probe = megasas_probe_one,
8689 .remove = megasas_detach_one,
8690 .driver.pm = &megasas_pm_ops,
8691 .shutdown = megasas_shutdown,
8692 };
8693
8694 /*
8695 * Sysfs driver attributes
8696 */
version_show(struct device_driver * dd,char * buf)8697 static ssize_t version_show(struct device_driver *dd, char *buf)
8698 {
8699 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
8700 MEGASAS_VERSION);
8701 }
8702 static DRIVER_ATTR_RO(version);
8703
release_date_show(struct device_driver * dd,char * buf)8704 static ssize_t release_date_show(struct device_driver *dd, char *buf)
8705 {
8706 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
8707 MEGASAS_RELDATE);
8708 }
8709 static DRIVER_ATTR_RO(release_date);
8710
support_poll_for_event_show(struct device_driver * dd,char * buf)8711 static ssize_t support_poll_for_event_show(struct device_driver *dd, char *buf)
8712 {
8713 return sprintf(buf, "%u\n", support_poll_for_event);
8714 }
8715 static DRIVER_ATTR_RO(support_poll_for_event);
8716
support_device_change_show(struct device_driver * dd,char * buf)8717 static ssize_t support_device_change_show(struct device_driver *dd, char *buf)
8718 {
8719 return sprintf(buf, "%u\n", support_device_change);
8720 }
8721 static DRIVER_ATTR_RO(support_device_change);
8722
dbg_lvl_show(struct device_driver * dd,char * buf)8723 static ssize_t dbg_lvl_show(struct device_driver *dd, char *buf)
8724 {
8725 return sprintf(buf, "%u\n", megasas_dbg_lvl);
8726 }
8727
dbg_lvl_store(struct device_driver * dd,const char * buf,size_t count)8728 static ssize_t dbg_lvl_store(struct device_driver *dd, const char *buf,
8729 size_t count)
8730 {
8731 int retval = count;
8732
8733 if (sscanf(buf, "%u", &megasas_dbg_lvl) < 1) {
8734 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
8735 retval = -EINVAL;
8736 }
8737 return retval;
8738 }
8739 static DRIVER_ATTR_RW(dbg_lvl);
8740
8741 static ssize_t
support_nvme_encapsulation_show(struct device_driver * dd,char * buf)8742 support_nvme_encapsulation_show(struct device_driver *dd, char *buf)
8743 {
8744 return sprintf(buf, "%u\n", support_nvme_encapsulation);
8745 }
8746
8747 static DRIVER_ATTR_RO(support_nvme_encapsulation);
8748
8749 static ssize_t
support_pci_lane_margining_show(struct device_driver * dd,char * buf)8750 support_pci_lane_margining_show(struct device_driver *dd, char *buf)
8751 {
8752 return sprintf(buf, "%u\n", support_pci_lane_margining);
8753 }
8754
8755 static DRIVER_ATTR_RO(support_pci_lane_margining);
8756
megasas_remove_scsi_device(struct scsi_device * sdev)8757 static inline void megasas_remove_scsi_device(struct scsi_device *sdev)
8758 {
8759 sdev_printk(KERN_INFO, sdev, "SCSI device is removed\n");
8760 scsi_remove_device(sdev);
8761 scsi_device_put(sdev);
8762 }
8763
8764 /**
8765 * megasas_update_device_list - Update the PD and LD device list from FW
8766 * after an AEN event notification
8767 * @instance: Adapter soft state
8768 * @event_type: Indicates type of event (PD or LD event)
8769 *
8770 * @return: Success or failure
8771 *
8772 * Issue DCMDs to Firmware to update the internal device list in driver.
8773 * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination
8774 * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list.
8775 */
8776 static
megasas_update_device_list(struct megasas_instance * instance,int event_type)8777 int megasas_update_device_list(struct megasas_instance *instance,
8778 int event_type)
8779 {
8780 int dcmd_ret;
8781
8782 if (instance->enable_fw_dev_list) {
8783 return megasas_host_device_list_query(instance, false);
8784 } else {
8785 if (event_type & SCAN_PD_CHANNEL) {
8786 dcmd_ret = megasas_get_pd_list(instance);
8787 if (dcmd_ret != DCMD_SUCCESS)
8788 return dcmd_ret;
8789 }
8790
8791 if (event_type & SCAN_VD_CHANNEL) {
8792 if (!instance->requestorId ||
8793 megasas_get_ld_vf_affiliation(instance, 0)) {
8794 return megasas_ld_list_query(instance,
8795 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST);
8796 }
8797 }
8798 }
8799 return DCMD_SUCCESS;
8800 }
8801
8802 /**
8803 * megasas_add_remove_devices - Add/remove devices to SCSI mid-layer
8804 * after an AEN event notification
8805 * @instance: Adapter soft state
8806 * @scan_type: Indicates type of devices (PD/LD) to add
8807 * @return void
8808 */
8809 static
megasas_add_remove_devices(struct megasas_instance * instance,int scan_type)8810 void megasas_add_remove_devices(struct megasas_instance *instance,
8811 int scan_type)
8812 {
8813 int i, j;
8814 u16 pd_index = 0;
8815 u16 ld_index = 0;
8816 u16 channel = 0, id = 0;
8817 struct Scsi_Host *host;
8818 struct scsi_device *sdev1;
8819 struct MR_HOST_DEVICE_LIST *targetid_list = NULL;
8820 struct MR_HOST_DEVICE_LIST_ENTRY *targetid_entry = NULL;
8821
8822 host = instance->host;
8823
8824 if (instance->enable_fw_dev_list) {
8825 targetid_list = instance->host_device_list_buf;
8826 for (i = 0; i < targetid_list->count; i++) {
8827 targetid_entry = &targetid_list->host_device_list[i];
8828 if (targetid_entry->flags.u.bits.is_sys_pd) {
8829 channel = le16_to_cpu(targetid_entry->target_id) /
8830 MEGASAS_MAX_DEV_PER_CHANNEL;
8831 id = le16_to_cpu(targetid_entry->target_id) %
8832 MEGASAS_MAX_DEV_PER_CHANNEL;
8833 } else {
8834 channel = MEGASAS_MAX_PD_CHANNELS +
8835 (le16_to_cpu(targetid_entry->target_id) /
8836 MEGASAS_MAX_DEV_PER_CHANNEL);
8837 id = le16_to_cpu(targetid_entry->target_id) %
8838 MEGASAS_MAX_DEV_PER_CHANNEL;
8839 }
8840 sdev1 = scsi_device_lookup(host, channel, id, 0);
8841 if (!sdev1) {
8842 scsi_add_device(host, channel, id, 0);
8843 } else {
8844 scsi_device_put(sdev1);
8845 }
8846 }
8847 }
8848
8849 if (scan_type & SCAN_PD_CHANNEL) {
8850 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
8851 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
8852 pd_index = i * MEGASAS_MAX_DEV_PER_CHANNEL + j;
8853 sdev1 = scsi_device_lookup(host, i, j, 0);
8854 if (instance->pd_list[pd_index].driveState ==
8855 MR_PD_STATE_SYSTEM) {
8856 if (!sdev1)
8857 scsi_add_device(host, i, j, 0);
8858 else
8859 scsi_device_put(sdev1);
8860 } else {
8861 if (sdev1)
8862 megasas_remove_scsi_device(sdev1);
8863 }
8864 }
8865 }
8866 }
8867
8868 if (scan_type & SCAN_VD_CHANNEL) {
8869 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
8870 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
8871 ld_index = (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
8872 sdev1 = scsi_device_lookup(host,
8873 MEGASAS_MAX_PD_CHANNELS + i, j, 0);
8874 if (instance->ld_ids[ld_index] != 0xff) {
8875 if (!sdev1)
8876 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
8877 else
8878 scsi_device_put(sdev1);
8879 } else {
8880 if (sdev1)
8881 megasas_remove_scsi_device(sdev1);
8882 }
8883 }
8884 }
8885 }
8886
8887 }
8888
8889 static void
megasas_aen_polling(struct work_struct * work)8890 megasas_aen_polling(struct work_struct *work)
8891 {
8892 struct megasas_aen_event *ev =
8893 container_of(work, struct megasas_aen_event, hotplug_work.work);
8894 struct megasas_instance *instance = ev->instance;
8895 union megasas_evt_class_locale class_locale;
8896 int event_type = 0;
8897 u32 seq_num;
8898 u16 ld_target_id;
8899 int error;
8900 u8 dcmd_ret = DCMD_SUCCESS;
8901 struct scsi_device *sdev1;
8902
8903 if (!instance) {
8904 printk(KERN_ERR "invalid instance!\n");
8905 kfree(ev);
8906 return;
8907 }
8908
8909 /* Don't run the event workqueue thread if OCR is running */
8910 mutex_lock(&instance->reset_mutex);
8911
8912 instance->ev = NULL;
8913 if (instance->evt_detail) {
8914 megasas_decode_evt(instance);
8915
8916 switch (le32_to_cpu(instance->evt_detail->code)) {
8917
8918 case MR_EVT_PD_INSERTED:
8919 case MR_EVT_PD_REMOVED:
8920 event_type = SCAN_PD_CHANNEL;
8921 break;
8922
8923 case MR_EVT_LD_OFFLINE:
8924 case MR_EVT_LD_DELETED:
8925 ld_target_id = instance->evt_detail->args.ld.target_id;
8926 sdev1 = scsi_device_lookup(instance->host,
8927 MEGASAS_MAX_PD_CHANNELS +
8928 (ld_target_id / MEGASAS_MAX_DEV_PER_CHANNEL),
8929 (ld_target_id % MEGASAS_MAX_DEV_PER_CHANNEL),
8930 0);
8931 if (sdev1) {
8932 mutex_unlock(&instance->reset_mutex);
8933 megasas_remove_scsi_device(sdev1);
8934 mutex_lock(&instance->reset_mutex);
8935 }
8936
8937 event_type = SCAN_VD_CHANNEL;
8938 break;
8939 case MR_EVT_LD_CREATED:
8940 event_type = SCAN_VD_CHANNEL;
8941 break;
8942
8943 case MR_EVT_CFG_CLEARED:
8944 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
8945 case MR_EVT_FOREIGN_CFG_IMPORTED:
8946 case MR_EVT_LD_STATE_CHANGE:
8947 event_type = SCAN_PD_CHANNEL | SCAN_VD_CHANNEL;
8948 dev_info(&instance->pdev->dev, "scanning for scsi%d...\n",
8949 instance->host->host_no);
8950 break;
8951
8952 case MR_EVT_CTRL_PROP_CHANGED:
8953 dcmd_ret = megasas_get_ctrl_info(instance);
8954 if (dcmd_ret == DCMD_SUCCESS &&
8955 instance->snapdump_wait_time) {
8956 megasas_get_snapdump_properties(instance);
8957 dev_info(&instance->pdev->dev,
8958 "Snap dump wait time\t: %d\n",
8959 instance->snapdump_wait_time);
8960 }
8961 break;
8962 default:
8963 event_type = 0;
8964 break;
8965 }
8966 } else {
8967 dev_err(&instance->pdev->dev, "invalid evt_detail!\n");
8968 mutex_unlock(&instance->reset_mutex);
8969 kfree(ev);
8970 return;
8971 }
8972
8973 if (event_type)
8974 dcmd_ret = megasas_update_device_list(instance, event_type);
8975
8976 mutex_unlock(&instance->reset_mutex);
8977
8978 if (event_type && dcmd_ret == DCMD_SUCCESS)
8979 megasas_add_remove_devices(instance, event_type);
8980
8981 if (dcmd_ret == DCMD_SUCCESS)
8982 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1;
8983 else
8984 seq_num = instance->last_seq_num;
8985
8986 /* Register AEN with FW for latest sequence number plus 1 */
8987 class_locale.members.reserved = 0;
8988 class_locale.members.locale = MR_EVT_LOCALE_ALL;
8989 class_locale.members.class = MR_EVT_CLASS_DEBUG;
8990
8991 if (instance->aen_cmd != NULL) {
8992 kfree(ev);
8993 return;
8994 }
8995
8996 mutex_lock(&instance->reset_mutex);
8997 error = megasas_register_aen(instance, seq_num,
8998 class_locale.word);
8999 if (error)
9000 dev_err(&instance->pdev->dev,
9001 "register aen failed error %x\n", error);
9002
9003 mutex_unlock(&instance->reset_mutex);
9004 kfree(ev);
9005 }
9006
9007 /**
9008 * megasas_init - Driver load entry point
9009 */
megasas_init(void)9010 static int __init megasas_init(void)
9011 {
9012 int rval;
9013
9014 /*
9015 * Booted in kdump kernel, minimize memory footprints by
9016 * disabling few features
9017 */
9018 if (reset_devices) {
9019 msix_vectors = 1;
9020 rdpq_enable = 0;
9021 dual_qdepth_disable = 1;
9022 poll_queues = 0;
9023 }
9024
9025 /*
9026 * Announce driver version and other information
9027 */
9028 pr_info("megasas: %s\n", MEGASAS_VERSION);
9029
9030 megasas_dbg_lvl = 0;
9031 support_poll_for_event = 2;
9032 support_device_change = 1;
9033 support_nvme_encapsulation = true;
9034 support_pci_lane_margining = true;
9035
9036 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
9037
9038 /*
9039 * Register character device node
9040 */
9041 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
9042
9043 if (rval < 0) {
9044 printk(KERN_DEBUG "megasas: failed to open device node\n");
9045 return rval;
9046 }
9047
9048 megasas_mgmt_majorno = rval;
9049
9050 megasas_init_debugfs();
9051
9052 /*
9053 * Register ourselves as PCI hotplug module
9054 */
9055 rval = pci_register_driver(&megasas_pci_driver);
9056
9057 if (rval) {
9058 printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n");
9059 goto err_pcidrv;
9060 }
9061
9062 if ((event_log_level < MFI_EVT_CLASS_DEBUG) ||
9063 (event_log_level > MFI_EVT_CLASS_DEAD)) {
9064 pr_warn("megaraid_sas: provided event log level is out of range, setting it to default 2(CLASS_CRITICAL), permissible range is: -2 to 4\n");
9065 event_log_level = MFI_EVT_CLASS_CRITICAL;
9066 }
9067
9068 rval = driver_create_file(&megasas_pci_driver.driver,
9069 &driver_attr_version);
9070 if (rval)
9071 goto err_dcf_attr_ver;
9072
9073 rval = driver_create_file(&megasas_pci_driver.driver,
9074 &driver_attr_release_date);
9075 if (rval)
9076 goto err_dcf_rel_date;
9077
9078 rval = driver_create_file(&megasas_pci_driver.driver,
9079 &driver_attr_support_poll_for_event);
9080 if (rval)
9081 goto err_dcf_support_poll_for_event;
9082
9083 rval = driver_create_file(&megasas_pci_driver.driver,
9084 &driver_attr_dbg_lvl);
9085 if (rval)
9086 goto err_dcf_dbg_lvl;
9087 rval = driver_create_file(&megasas_pci_driver.driver,
9088 &driver_attr_support_device_change);
9089 if (rval)
9090 goto err_dcf_support_device_change;
9091
9092 rval = driver_create_file(&megasas_pci_driver.driver,
9093 &driver_attr_support_nvme_encapsulation);
9094 if (rval)
9095 goto err_dcf_support_nvme_encapsulation;
9096
9097 rval = driver_create_file(&megasas_pci_driver.driver,
9098 &driver_attr_support_pci_lane_margining);
9099 if (rval)
9100 goto err_dcf_support_pci_lane_margining;
9101
9102 return rval;
9103
9104 err_dcf_support_pci_lane_margining:
9105 driver_remove_file(&megasas_pci_driver.driver,
9106 &driver_attr_support_nvme_encapsulation);
9107
9108 err_dcf_support_nvme_encapsulation:
9109 driver_remove_file(&megasas_pci_driver.driver,
9110 &driver_attr_support_device_change);
9111
9112 err_dcf_support_device_change:
9113 driver_remove_file(&megasas_pci_driver.driver,
9114 &driver_attr_dbg_lvl);
9115 err_dcf_dbg_lvl:
9116 driver_remove_file(&megasas_pci_driver.driver,
9117 &driver_attr_support_poll_for_event);
9118 err_dcf_support_poll_for_event:
9119 driver_remove_file(&megasas_pci_driver.driver,
9120 &driver_attr_release_date);
9121 err_dcf_rel_date:
9122 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
9123 err_dcf_attr_ver:
9124 pci_unregister_driver(&megasas_pci_driver);
9125 err_pcidrv:
9126 megasas_exit_debugfs();
9127 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
9128 return rval;
9129 }
9130
9131 /**
9132 * megasas_exit - Driver unload entry point
9133 */
megasas_exit(void)9134 static void __exit megasas_exit(void)
9135 {
9136 driver_remove_file(&megasas_pci_driver.driver,
9137 &driver_attr_dbg_lvl);
9138 driver_remove_file(&megasas_pci_driver.driver,
9139 &driver_attr_support_poll_for_event);
9140 driver_remove_file(&megasas_pci_driver.driver,
9141 &driver_attr_support_device_change);
9142 driver_remove_file(&megasas_pci_driver.driver,
9143 &driver_attr_release_date);
9144 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
9145 driver_remove_file(&megasas_pci_driver.driver,
9146 &driver_attr_support_nvme_encapsulation);
9147 driver_remove_file(&megasas_pci_driver.driver,
9148 &driver_attr_support_pci_lane_margining);
9149
9150 pci_unregister_driver(&megasas_pci_driver);
9151 megasas_exit_debugfs();
9152 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
9153 }
9154
9155 module_init(megasas_init);
9156 module_exit(megasas_exit);
9157