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 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 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 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 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 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 */
1784 static int
megasas_queue_command(struct Scsi_Host * shost,struct scsi_cmnd * scmd)1785 megasas_queue_command(struct Scsi_Host *shost, 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
1977 instance = (struct megasas_instance *)sdev->host->hostdata;
1978 mr_nvme_pg_size = max_t(u32, instance->nvme_page_size,
1979 MR_DEFAULT_NVME_PAGE_SIZE);
1980
1981 lim->max_hw_sectors = max_io_size / 512;
1982 lim->virt_boundary_mask = mr_nvme_pg_size - 1;
1983 }
1984
1985 /*
1986 * megasas_set_fw_assisted_qd -
1987 * set device queue depth to can_queue
1988 * set device queue depth to fw assisted qd
1989 *
1990 * @sdev: scsi device
1991 * @is_target_prop true, if fw provided target properties.
1992 */
megasas_set_fw_assisted_qd(struct scsi_device * sdev,bool is_target_prop)1993 static void megasas_set_fw_assisted_qd(struct scsi_device *sdev,
1994 bool is_target_prop)
1995 {
1996 u8 interface_type;
1997 u32 device_qd = MEGASAS_DEFAULT_CMD_PER_LUN;
1998 u32 tgt_device_qd;
1999 struct megasas_instance *instance;
2000 struct MR_PRIV_DEVICE *mr_device_priv_data;
2001
2002 instance = megasas_lookup_instance(sdev->host->host_no);
2003 mr_device_priv_data = sdev->hostdata;
2004 interface_type = mr_device_priv_data->interface_type;
2005
2006 switch (interface_type) {
2007 case SAS_PD:
2008 device_qd = MEGASAS_SAS_QD;
2009 break;
2010 case SATA_PD:
2011 device_qd = MEGASAS_SATA_QD;
2012 break;
2013 case NVME_PD:
2014 device_qd = MEGASAS_NVME_QD;
2015 break;
2016 }
2017
2018 if (is_target_prop) {
2019 tgt_device_qd = le32_to_cpu(instance->tgt_prop->device_qdepth);
2020 if (tgt_device_qd)
2021 device_qd = min(instance->host->can_queue,
2022 (int)tgt_device_qd);
2023 }
2024
2025 if (instance->enable_sdev_max_qd && interface_type != UNKNOWN_DRIVE)
2026 device_qd = instance->host->can_queue;
2027
2028 scsi_change_queue_depth(sdev, device_qd);
2029 }
2030
2031 /*
2032 * megasas_set_static_target_properties -
2033 * Device property set by driver are static and it is not required to be
2034 * updated after OCR.
2035 *
2036 * set io timeout
2037 * set device queue depth
2038 * set nvme device properties. see - megasas_set_nvme_device_properties
2039 *
2040 * @sdev: scsi device
2041 * @is_target_prop true, if fw provided target properties.
2042 */
megasas_set_static_target_properties(struct scsi_device * sdev,struct queue_limits * lim,bool is_target_prop)2043 static void megasas_set_static_target_properties(struct scsi_device *sdev,
2044 struct queue_limits *lim, bool is_target_prop)
2045 {
2046 u32 max_io_size_kb = MR_DEFAULT_NVME_MDTS_KB;
2047 struct megasas_instance *instance;
2048
2049 instance = megasas_lookup_instance(sdev->host->host_no);
2050
2051 /*
2052 * The RAID firmware may require extended timeouts.
2053 */
2054 blk_queue_rq_timeout(sdev->request_queue, scmd_timeout * HZ);
2055
2056 /* max_io_size_kb will be set to non zero for
2057 * nvme based vd and syspd.
2058 */
2059 if (is_target_prop)
2060 max_io_size_kb = le32_to_cpu(instance->tgt_prop->max_io_size_kb);
2061
2062 if (instance->nvme_page_size && max_io_size_kb)
2063 megasas_set_nvme_device_properties(sdev, lim,
2064 max_io_size_kb << 10);
2065
2066 megasas_set_fw_assisted_qd(sdev, is_target_prop);
2067 }
2068
2069
megasas_sdev_configure(struct scsi_device * sdev,struct queue_limits * lim)2070 static int megasas_sdev_configure(struct scsi_device *sdev,
2071 struct queue_limits *lim)
2072 {
2073 u16 pd_index = 0;
2074 struct megasas_instance *instance;
2075 int ret_target_prop = DCMD_FAILED;
2076 bool is_target_prop = false;
2077
2078 instance = megasas_lookup_instance(sdev->host->host_no);
2079 if (instance->pd_list_not_supported) {
2080 if (!MEGASAS_IS_LOGICAL(sdev) && sdev->type == TYPE_DISK) {
2081 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
2082 sdev->id;
2083 if (instance->pd_list[pd_index].driveState !=
2084 MR_PD_STATE_SYSTEM)
2085 return -ENXIO;
2086 }
2087 }
2088
2089 mutex_lock(&instance->reset_mutex);
2090 /* Send DCMD to Firmware and cache the information */
2091 if ((instance->pd_info) && !MEGASAS_IS_LOGICAL(sdev))
2092 megasas_get_pd_info(instance, sdev);
2093
2094 /* Some ventura firmware may not have instance->nvme_page_size set.
2095 * Do not send MR_DCMD_DRV_GET_TARGET_PROP
2096 */
2097 if ((instance->tgt_prop) && (instance->nvme_page_size))
2098 ret_target_prop = megasas_get_target_prop(instance, sdev);
2099
2100 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
2101 megasas_set_static_target_properties(sdev, lim, is_target_prop);
2102
2103 /* This sdev property may change post OCR */
2104 megasas_set_dynamic_target_properties(sdev, lim, is_target_prop);
2105
2106 mutex_unlock(&instance->reset_mutex);
2107
2108 return 0;
2109 }
2110
megasas_sdev_init(struct scsi_device * sdev)2111 static int megasas_sdev_init(struct scsi_device *sdev)
2112 {
2113 u16 pd_index = 0, ld_tgt_id;
2114 struct megasas_instance *instance ;
2115 struct MR_PRIV_DEVICE *mr_device_priv_data;
2116
2117 instance = megasas_lookup_instance(sdev->host->host_no);
2118 if (!MEGASAS_IS_LOGICAL(sdev)) {
2119 /*
2120 * Open the OS scan to the SYSTEM PD
2121 */
2122 pd_index =
2123 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
2124 sdev->id;
2125 if ((instance->pd_list_not_supported ||
2126 instance->pd_list[pd_index].driveState ==
2127 MR_PD_STATE_SYSTEM)) {
2128 goto scan_target;
2129 }
2130 return -ENXIO;
2131 } else if (!MEGASAS_IS_LUN_VALID(sdev)) {
2132 sdev_printk(KERN_INFO, sdev, "%s: invalid LUN\n", __func__);
2133 return -ENXIO;
2134 }
2135
2136 scan_target:
2137 mr_device_priv_data = kzalloc(sizeof(*mr_device_priv_data),
2138 GFP_KERNEL);
2139 if (!mr_device_priv_data)
2140 return -ENOMEM;
2141
2142 if (MEGASAS_IS_LOGICAL(sdev)) {
2143 ld_tgt_id = MEGASAS_TARGET_ID(sdev);
2144 instance->ld_tgtid_status[ld_tgt_id] = LD_TARGET_ID_ACTIVE;
2145 if (megasas_dbg_lvl & LD_PD_DEBUG)
2146 sdev_printk(KERN_INFO, sdev, "LD target ID %d created.\n", ld_tgt_id);
2147 }
2148
2149 sdev->hostdata = mr_device_priv_data;
2150
2151 atomic_set(&mr_device_priv_data->r1_ldio_hint,
2152 instance->r1_ldio_hint_default);
2153 return 0;
2154 }
2155
megasas_sdev_destroy(struct scsi_device * sdev)2156 static void megasas_sdev_destroy(struct scsi_device *sdev)
2157 {
2158 u16 ld_tgt_id;
2159 struct megasas_instance *instance;
2160
2161 instance = megasas_lookup_instance(sdev->host->host_no);
2162
2163 if (MEGASAS_IS_LOGICAL(sdev)) {
2164 if (!MEGASAS_IS_LUN_VALID(sdev)) {
2165 sdev_printk(KERN_INFO, sdev, "%s: invalid LUN\n", __func__);
2166 return;
2167 }
2168 ld_tgt_id = MEGASAS_TARGET_ID(sdev);
2169 instance->ld_tgtid_status[ld_tgt_id] = LD_TARGET_ID_DELETED;
2170 if (megasas_dbg_lvl & LD_PD_DEBUG)
2171 sdev_printk(KERN_INFO, sdev,
2172 "LD target ID %d removed from OS stack\n", ld_tgt_id);
2173 }
2174
2175 kfree(sdev->hostdata);
2176 sdev->hostdata = NULL;
2177 }
2178
2179 /*
2180 * megasas_complete_outstanding_ioctls - Complete outstanding ioctls after a
2181 * kill adapter
2182 * @instance: Adapter soft state
2183 *
2184 */
megasas_complete_outstanding_ioctls(struct megasas_instance * instance)2185 static void megasas_complete_outstanding_ioctls(struct megasas_instance *instance)
2186 {
2187 int i;
2188 struct megasas_cmd *cmd_mfi;
2189 struct megasas_cmd_fusion *cmd_fusion;
2190 struct fusion_context *fusion = instance->ctrl_context;
2191
2192 /* Find all outstanding ioctls */
2193 if (fusion) {
2194 for (i = 0; i < instance->max_fw_cmds; i++) {
2195 cmd_fusion = fusion->cmd_list[i];
2196 if (cmd_fusion->sync_cmd_idx != (u32)ULONG_MAX) {
2197 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
2198 if (cmd_mfi->sync_cmd &&
2199 (cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT)) {
2200 cmd_mfi->frame->hdr.cmd_status =
2201 MFI_STAT_WRONG_STATE;
2202 megasas_complete_cmd(instance,
2203 cmd_mfi, DID_OK);
2204 }
2205 }
2206 }
2207 } else {
2208 for (i = 0; i < instance->max_fw_cmds; i++) {
2209 cmd_mfi = instance->cmd_list[i];
2210 if (cmd_mfi->sync_cmd && cmd_mfi->frame->hdr.cmd !=
2211 MFI_CMD_ABORT)
2212 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
2213 }
2214 }
2215 }
2216
2217
megaraid_sas_kill_hba(struct megasas_instance * instance)2218 void megaraid_sas_kill_hba(struct megasas_instance *instance)
2219 {
2220 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2221 dev_warn(&instance->pdev->dev,
2222 "Adapter already dead, skipping kill HBA\n");
2223 return;
2224 }
2225
2226 /* Set critical error to block I/O & ioctls in case caller didn't */
2227 atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2228 /* Wait 1 second to ensure IO or ioctls in build have posted */
2229 msleep(1000);
2230 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2231 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2232 (instance->adapter_type != MFI_SERIES)) {
2233 if (!instance->requestorId) {
2234 writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
2235 /* Flush */
2236 readl(&instance->reg_set->doorbell);
2237 }
2238 if (instance->requestorId && instance->peerIsPresent)
2239 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
2240 } else {
2241 writel(MFI_STOP_ADP,
2242 &instance->reg_set->inbound_doorbell);
2243 }
2244 /* Complete outstanding ioctls when adapter is killed */
2245 megasas_complete_outstanding_ioctls(instance);
2246 }
2247
2248 /**
2249 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
2250 * restored to max value
2251 * @instance: Adapter soft state
2252 *
2253 */
2254 void
megasas_check_and_restore_queue_depth(struct megasas_instance * instance)2255 megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
2256 {
2257 unsigned long flags;
2258
2259 if (instance->flag & MEGASAS_FW_BUSY
2260 && time_after(jiffies, instance->last_time + 5 * HZ)
2261 && atomic_read(&instance->fw_outstanding) <
2262 instance->throttlequeuedepth + 1) {
2263
2264 spin_lock_irqsave(instance->host->host_lock, flags);
2265 instance->flag &= ~MEGASAS_FW_BUSY;
2266
2267 instance->host->can_queue = instance->cur_can_queue;
2268 spin_unlock_irqrestore(instance->host->host_lock, flags);
2269 }
2270 }
2271
2272 /**
2273 * megasas_complete_cmd_dpc - Returns FW's controller structure
2274 * @instance_addr: Address of adapter soft state
2275 *
2276 * Tasklet to complete cmds
2277 */
megasas_complete_cmd_dpc(unsigned long instance_addr)2278 static void megasas_complete_cmd_dpc(unsigned long instance_addr)
2279 {
2280 u32 producer;
2281 u32 consumer;
2282 u32 context;
2283 struct megasas_cmd *cmd;
2284 struct megasas_instance *instance =
2285 (struct megasas_instance *)instance_addr;
2286 unsigned long flags;
2287
2288 /* If we have already declared adapter dead, donot complete cmds */
2289 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
2290 return;
2291
2292 spin_lock_irqsave(&instance->completion_lock, flags);
2293
2294 producer = le32_to_cpu(*instance->producer);
2295 consumer = le32_to_cpu(*instance->consumer);
2296
2297 while (consumer != producer) {
2298 context = le32_to_cpu(instance->reply_queue[consumer]);
2299 if (context >= instance->max_fw_cmds) {
2300 dev_err(&instance->pdev->dev, "Unexpected context value %x\n",
2301 context);
2302 BUG();
2303 }
2304
2305 cmd = instance->cmd_list[context];
2306
2307 megasas_complete_cmd(instance, cmd, DID_OK);
2308
2309 consumer++;
2310 if (consumer == (instance->max_fw_cmds + 1)) {
2311 consumer = 0;
2312 }
2313 }
2314
2315 *instance->consumer = cpu_to_le32(producer);
2316
2317 spin_unlock_irqrestore(&instance->completion_lock, flags);
2318
2319 /*
2320 * Check if we can restore can_queue
2321 */
2322 megasas_check_and_restore_queue_depth(instance);
2323 }
2324
2325 static void megasas_sriov_heartbeat_handler(struct timer_list *t);
2326
2327 /**
2328 * megasas_start_timer - Initializes sriov heartbeat timer object
2329 * @instance: Adapter soft state
2330 *
2331 */
megasas_start_timer(struct megasas_instance * instance)2332 void megasas_start_timer(struct megasas_instance *instance)
2333 {
2334 struct timer_list *timer = &instance->sriov_heartbeat_timer;
2335
2336 timer_setup(timer, megasas_sriov_heartbeat_handler, 0);
2337 timer->expires = jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF;
2338 add_timer(timer);
2339 }
2340
2341 static void
2342 megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
2343
2344 static void
2345 process_fw_state_change_wq(struct work_struct *work);
2346
megasas_do_ocr(struct megasas_instance * instance)2347 static void megasas_do_ocr(struct megasas_instance *instance)
2348 {
2349 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
2350 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
2351 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
2352 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
2353 }
2354 instance->instancet->disable_intr(instance);
2355 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
2356 instance->issuepend_done = 0;
2357
2358 atomic_set(&instance->fw_outstanding, 0);
2359 megasas_internal_reset_defer_cmds(instance);
2360 process_fw_state_change_wq(&instance->work_init);
2361 }
2362
megasas_get_ld_vf_affiliation_111(struct megasas_instance * instance,int initial)2363 static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance,
2364 int initial)
2365 {
2366 struct megasas_cmd *cmd;
2367 struct megasas_dcmd_frame *dcmd;
2368 struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL;
2369 dma_addr_t new_affiliation_111_h;
2370 int ld, retval = 0;
2371 u8 thisVf;
2372
2373 cmd = megasas_get_cmd(instance);
2374
2375 if (!cmd) {
2376 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation_111:"
2377 "Failed to get cmd for scsi%d\n",
2378 instance->host->host_no);
2379 return -ENOMEM;
2380 }
2381
2382 dcmd = &cmd->frame->dcmd;
2383
2384 if (!instance->vf_affiliation_111) {
2385 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2386 "affiliation for scsi%d\n", instance->host->host_no);
2387 megasas_return_cmd(instance, cmd);
2388 return -ENOMEM;
2389 }
2390
2391 if (initial)
2392 memset(instance->vf_affiliation_111, 0,
2393 sizeof(struct MR_LD_VF_AFFILIATION_111));
2394 else {
2395 new_affiliation_111 =
2396 dma_alloc_coherent(&instance->pdev->dev,
2397 sizeof(struct MR_LD_VF_AFFILIATION_111),
2398 &new_affiliation_111_h, GFP_KERNEL);
2399 if (!new_affiliation_111) {
2400 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2401 "memory for new affiliation for scsi%d\n",
2402 instance->host->host_no);
2403 megasas_return_cmd(instance, cmd);
2404 return -ENOMEM;
2405 }
2406 }
2407
2408 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2409
2410 dcmd->cmd = MFI_CMD_DCMD;
2411 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2412 dcmd->sge_count = 1;
2413 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2414 dcmd->timeout = 0;
2415 dcmd->pad_0 = 0;
2416 dcmd->data_xfer_len =
2417 cpu_to_le32(sizeof(struct MR_LD_VF_AFFILIATION_111));
2418 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111);
2419
2420 if (initial)
2421 dcmd->sgl.sge32[0].phys_addr =
2422 cpu_to_le32(instance->vf_affiliation_111_h);
2423 else
2424 dcmd->sgl.sge32[0].phys_addr =
2425 cpu_to_le32(new_affiliation_111_h);
2426
2427 dcmd->sgl.sge32[0].length = cpu_to_le32(
2428 sizeof(struct MR_LD_VF_AFFILIATION_111));
2429
2430 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2431 "scsi%d\n", instance->host->host_no);
2432
2433 if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2434 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2435 " failed with status 0x%x for scsi%d\n",
2436 dcmd->cmd_status, instance->host->host_no);
2437 retval = 1; /* Do a scan if we couldn't get affiliation */
2438 goto out;
2439 }
2440
2441 if (!initial) {
2442 thisVf = new_affiliation_111->thisVf;
2443 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++)
2444 if (instance->vf_affiliation_111->map[ld].policy[thisVf] !=
2445 new_affiliation_111->map[ld].policy[thisVf]) {
2446 dev_warn(&instance->pdev->dev, "SR-IOV: "
2447 "Got new LD/VF affiliation for scsi%d\n",
2448 instance->host->host_no);
2449 memcpy(instance->vf_affiliation_111,
2450 new_affiliation_111,
2451 sizeof(struct MR_LD_VF_AFFILIATION_111));
2452 retval = 1;
2453 goto out;
2454 }
2455 }
2456 out:
2457 if (new_affiliation_111) {
2458 dma_free_coherent(&instance->pdev->dev,
2459 sizeof(struct MR_LD_VF_AFFILIATION_111),
2460 new_affiliation_111,
2461 new_affiliation_111_h);
2462 }
2463
2464 megasas_return_cmd(instance, cmd);
2465
2466 return retval;
2467 }
2468
megasas_get_ld_vf_affiliation_12(struct megasas_instance * instance,int initial)2469 static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance,
2470 int initial)
2471 {
2472 struct megasas_cmd *cmd;
2473 struct megasas_dcmd_frame *dcmd;
2474 struct MR_LD_VF_AFFILIATION *new_affiliation = NULL;
2475 struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL;
2476 dma_addr_t new_affiliation_h;
2477 int i, j, retval = 0, found = 0, doscan = 0;
2478 u8 thisVf;
2479
2480 cmd = megasas_get_cmd(instance);
2481
2482 if (!cmd) {
2483 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation12: "
2484 "Failed to get cmd for scsi%d\n",
2485 instance->host->host_no);
2486 return -ENOMEM;
2487 }
2488
2489 dcmd = &cmd->frame->dcmd;
2490
2491 if (!instance->vf_affiliation) {
2492 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2493 "affiliation for scsi%d\n", instance->host->host_no);
2494 megasas_return_cmd(instance, cmd);
2495 return -ENOMEM;
2496 }
2497
2498 if (initial)
2499 memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
2500 sizeof(struct MR_LD_VF_AFFILIATION));
2501 else {
2502 new_affiliation =
2503 dma_alloc_coherent(&instance->pdev->dev,
2504 (MAX_LOGICAL_DRIVES + 1) * sizeof(struct MR_LD_VF_AFFILIATION),
2505 &new_affiliation_h, GFP_KERNEL);
2506 if (!new_affiliation) {
2507 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2508 "memory for new affiliation for scsi%d\n",
2509 instance->host->host_no);
2510 megasas_return_cmd(instance, cmd);
2511 return -ENOMEM;
2512 }
2513 }
2514
2515 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2516
2517 dcmd->cmd = MFI_CMD_DCMD;
2518 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2519 dcmd->sge_count = 1;
2520 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2521 dcmd->timeout = 0;
2522 dcmd->pad_0 = 0;
2523 dcmd->data_xfer_len = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2524 sizeof(struct MR_LD_VF_AFFILIATION));
2525 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS);
2526
2527 if (initial)
2528 dcmd->sgl.sge32[0].phys_addr =
2529 cpu_to_le32(instance->vf_affiliation_h);
2530 else
2531 dcmd->sgl.sge32[0].phys_addr =
2532 cpu_to_le32(new_affiliation_h);
2533
2534 dcmd->sgl.sge32[0].length = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2535 sizeof(struct MR_LD_VF_AFFILIATION));
2536
2537 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2538 "scsi%d\n", instance->host->host_no);
2539
2540
2541 if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2542 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2543 " failed with status 0x%x for scsi%d\n",
2544 dcmd->cmd_status, instance->host->host_no);
2545 retval = 1; /* Do a scan if we couldn't get affiliation */
2546 goto out;
2547 }
2548
2549 if (!initial) {
2550 if (!new_affiliation->ldCount) {
2551 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2552 "affiliation for passive path for scsi%d\n",
2553 instance->host->host_no);
2554 retval = 1;
2555 goto out;
2556 }
2557 newmap = new_affiliation->map;
2558 savedmap = instance->vf_affiliation->map;
2559 thisVf = new_affiliation->thisVf;
2560 for (i = 0 ; i < new_affiliation->ldCount; i++) {
2561 found = 0;
2562 for (j = 0; j < instance->vf_affiliation->ldCount;
2563 j++) {
2564 if (newmap->ref.targetId ==
2565 savedmap->ref.targetId) {
2566 found = 1;
2567 if (newmap->policy[thisVf] !=
2568 savedmap->policy[thisVf]) {
2569 doscan = 1;
2570 goto out;
2571 }
2572 }
2573 savedmap = (struct MR_LD_VF_MAP *)
2574 ((unsigned char *)savedmap +
2575 savedmap->size);
2576 }
2577 if (!found && newmap->policy[thisVf] !=
2578 MR_LD_ACCESS_HIDDEN) {
2579 doscan = 1;
2580 goto out;
2581 }
2582 newmap = (struct MR_LD_VF_MAP *)
2583 ((unsigned char *)newmap + newmap->size);
2584 }
2585
2586 newmap = new_affiliation->map;
2587 savedmap = instance->vf_affiliation->map;
2588
2589 for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) {
2590 found = 0;
2591 for (j = 0 ; j < new_affiliation->ldCount; j++) {
2592 if (savedmap->ref.targetId ==
2593 newmap->ref.targetId) {
2594 found = 1;
2595 if (savedmap->policy[thisVf] !=
2596 newmap->policy[thisVf]) {
2597 doscan = 1;
2598 goto out;
2599 }
2600 }
2601 newmap = (struct MR_LD_VF_MAP *)
2602 ((unsigned char *)newmap +
2603 newmap->size);
2604 }
2605 if (!found && savedmap->policy[thisVf] !=
2606 MR_LD_ACCESS_HIDDEN) {
2607 doscan = 1;
2608 goto out;
2609 }
2610 savedmap = (struct MR_LD_VF_MAP *)
2611 ((unsigned char *)savedmap +
2612 savedmap->size);
2613 }
2614 }
2615 out:
2616 if (doscan) {
2617 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2618 "affiliation for scsi%d\n", instance->host->host_no);
2619 memcpy(instance->vf_affiliation, new_affiliation,
2620 new_affiliation->size);
2621 retval = 1;
2622 }
2623
2624 if (new_affiliation)
2625 dma_free_coherent(&instance->pdev->dev,
2626 (MAX_LOGICAL_DRIVES + 1) *
2627 sizeof(struct MR_LD_VF_AFFILIATION),
2628 new_affiliation, new_affiliation_h);
2629 megasas_return_cmd(instance, cmd);
2630
2631 return retval;
2632 }
2633
2634 /* This function will get the current SR-IOV LD/VF affiliation */
megasas_get_ld_vf_affiliation(struct megasas_instance * instance,int initial)2635 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
2636 int initial)
2637 {
2638 int retval;
2639
2640 if (instance->PlasmaFW111)
2641 retval = megasas_get_ld_vf_affiliation_111(instance, initial);
2642 else
2643 retval = megasas_get_ld_vf_affiliation_12(instance, initial);
2644 return retval;
2645 }
2646
2647 /* This function will tell FW to start the SR-IOV heartbeat */
megasas_sriov_start_heartbeat(struct megasas_instance * instance,int initial)2648 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
2649 int initial)
2650 {
2651 struct megasas_cmd *cmd;
2652 struct megasas_dcmd_frame *dcmd;
2653 int retval = 0;
2654
2655 cmd = megasas_get_cmd(instance);
2656
2657 if (!cmd) {
2658 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_sriov_start_heartbeat: "
2659 "Failed to get cmd for scsi%d\n",
2660 instance->host->host_no);
2661 return -ENOMEM;
2662 }
2663
2664 dcmd = &cmd->frame->dcmd;
2665
2666 if (initial) {
2667 instance->hb_host_mem =
2668 dma_alloc_coherent(&instance->pdev->dev,
2669 sizeof(struct MR_CTRL_HB_HOST_MEM),
2670 &instance->hb_host_mem_h,
2671 GFP_KERNEL);
2672 if (!instance->hb_host_mem) {
2673 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate"
2674 " memory for heartbeat host memory for scsi%d\n",
2675 instance->host->host_no);
2676 retval = -ENOMEM;
2677 goto out;
2678 }
2679 }
2680
2681 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2682
2683 dcmd->mbox.s[0] = cpu_to_le16(sizeof(struct MR_CTRL_HB_HOST_MEM));
2684 dcmd->cmd = MFI_CMD_DCMD;
2685 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2686 dcmd->sge_count = 1;
2687 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2688 dcmd->timeout = 0;
2689 dcmd->pad_0 = 0;
2690 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM));
2691 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC);
2692
2693 megasas_set_dma_settings(instance, dcmd, instance->hb_host_mem_h,
2694 sizeof(struct MR_CTRL_HB_HOST_MEM));
2695
2696 dev_warn(&instance->pdev->dev, "SR-IOV: Starting heartbeat for scsi%d\n",
2697 instance->host->host_no);
2698
2699 if ((instance->adapter_type != MFI_SERIES) &&
2700 !instance->mask_interrupts)
2701 retval = megasas_issue_blocked_cmd(instance, cmd,
2702 MEGASAS_ROUTINE_WAIT_TIME_VF);
2703 else
2704 retval = megasas_issue_polled(instance, cmd);
2705
2706 if (retval) {
2707 dev_warn(&instance->pdev->dev, "SR-IOV: MR_DCMD_CTRL_SHARED_HOST"
2708 "_MEM_ALLOC DCMD %s for scsi%d\n",
2709 (dcmd->cmd_status == MFI_STAT_INVALID_STATUS) ?
2710 "timed out" : "failed", instance->host->host_no);
2711 retval = 1;
2712 }
2713
2714 out:
2715 megasas_return_cmd(instance, cmd);
2716
2717 return retval;
2718 }
2719
2720 /* Handler for SR-IOV heartbeat */
megasas_sriov_heartbeat_handler(struct timer_list * t)2721 static void megasas_sriov_heartbeat_handler(struct timer_list *t)
2722 {
2723 struct megasas_instance *instance =
2724 from_timer(instance, t, sriov_heartbeat_timer);
2725
2726 if (instance->hb_host_mem->HB.fwCounter !=
2727 instance->hb_host_mem->HB.driverCounter) {
2728 instance->hb_host_mem->HB.driverCounter =
2729 instance->hb_host_mem->HB.fwCounter;
2730 mod_timer(&instance->sriov_heartbeat_timer,
2731 jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
2732 } else {
2733 dev_warn(&instance->pdev->dev, "SR-IOV: Heartbeat never "
2734 "completed for scsi%d\n", instance->host->host_no);
2735 schedule_work(&instance->work_init);
2736 }
2737 }
2738
2739 /**
2740 * megasas_wait_for_outstanding - Wait for all outstanding cmds
2741 * @instance: Adapter soft state
2742 *
2743 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
2744 * complete all its outstanding commands. Returns error if one or more IOs
2745 * are pending after this time period. It also marks the controller dead.
2746 */
megasas_wait_for_outstanding(struct megasas_instance * instance)2747 static int megasas_wait_for_outstanding(struct megasas_instance *instance)
2748 {
2749 int i, sl, outstanding;
2750 u32 reset_index;
2751 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
2752 unsigned long flags;
2753 struct list_head clist_local;
2754 struct megasas_cmd *reset_cmd;
2755 u32 fw_state;
2756
2757 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2758 dev_info(&instance->pdev->dev, "%s:%d HBA is killed.\n",
2759 __func__, __LINE__);
2760 return FAILED;
2761 }
2762
2763 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2764
2765 INIT_LIST_HEAD(&clist_local);
2766 spin_lock_irqsave(&instance->hba_lock, flags);
2767 list_splice_init(&instance->internal_reset_pending_q,
2768 &clist_local);
2769 spin_unlock_irqrestore(&instance->hba_lock, flags);
2770
2771 dev_notice(&instance->pdev->dev, "HBA reset wait ...\n");
2772 for (i = 0; i < wait_time; i++) {
2773 msleep(1000);
2774 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL)
2775 break;
2776 }
2777
2778 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2779 dev_notice(&instance->pdev->dev, "reset: Stopping HBA.\n");
2780 atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2781 return FAILED;
2782 }
2783
2784 reset_index = 0;
2785 while (!list_empty(&clist_local)) {
2786 reset_cmd = list_entry((&clist_local)->next,
2787 struct megasas_cmd, list);
2788 list_del_init(&reset_cmd->list);
2789 if (reset_cmd->scmd) {
2790 reset_cmd->scmd->result = DID_REQUEUE << 16;
2791 dev_notice(&instance->pdev->dev, "%d:%p reset [%02x]\n",
2792 reset_index, reset_cmd,
2793 reset_cmd->scmd->cmnd[0]);
2794
2795 scsi_done(reset_cmd->scmd);
2796 megasas_return_cmd(instance, reset_cmd);
2797 } else if (reset_cmd->sync_cmd) {
2798 dev_notice(&instance->pdev->dev, "%p synch cmds"
2799 "reset queue\n",
2800 reset_cmd);
2801
2802 reset_cmd->cmd_status_drv = DCMD_INIT;
2803 instance->instancet->fire_cmd(instance,
2804 reset_cmd->frame_phys_addr,
2805 0, instance->reg_set);
2806 } else {
2807 dev_notice(&instance->pdev->dev, "%p unexpected"
2808 "cmds lst\n",
2809 reset_cmd);
2810 }
2811 reset_index++;
2812 }
2813
2814 return SUCCESS;
2815 }
2816
2817 for (i = 0; i < resetwaittime; i++) {
2818 outstanding = atomic_read(&instance->fw_outstanding);
2819
2820 if (!outstanding)
2821 break;
2822
2823 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2824 dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
2825 "commands to complete\n",i,outstanding);
2826 /*
2827 * Call cmd completion routine. Cmd to be
2828 * be completed directly without depending on isr.
2829 */
2830 megasas_complete_cmd_dpc((unsigned long)instance);
2831 }
2832
2833 msleep(1000);
2834 }
2835
2836 i = 0;
2837 outstanding = atomic_read(&instance->fw_outstanding);
2838 fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK;
2839
2840 if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2841 goto no_outstanding;
2842
2843 if (instance->disableOnlineCtrlReset)
2844 goto kill_hba_and_failed;
2845 do {
2846 if ((fw_state == MFI_STATE_FAULT) || atomic_read(&instance->fw_outstanding)) {
2847 dev_info(&instance->pdev->dev,
2848 "%s:%d waiting_for_outstanding: before issue OCR. FW state = 0x%x, outstanding 0x%x\n",
2849 __func__, __LINE__, fw_state, atomic_read(&instance->fw_outstanding));
2850 if (i == 3)
2851 goto kill_hba_and_failed;
2852 megasas_do_ocr(instance);
2853
2854 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2855 dev_info(&instance->pdev->dev, "%s:%d OCR failed and HBA is killed.\n",
2856 __func__, __LINE__);
2857 return FAILED;
2858 }
2859 dev_info(&instance->pdev->dev, "%s:%d waiting_for_outstanding: after issue OCR.\n",
2860 __func__, __LINE__);
2861
2862 for (sl = 0; sl < 10; sl++)
2863 msleep(500);
2864
2865 outstanding = atomic_read(&instance->fw_outstanding);
2866
2867 fw_state = instance->instancet->read_fw_status_reg(instance) & MFI_STATE_MASK;
2868 if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2869 goto no_outstanding;
2870 }
2871 i++;
2872 } while (i <= 3);
2873
2874 no_outstanding:
2875
2876 dev_info(&instance->pdev->dev, "%s:%d no more pending commands remain after reset handling.\n",
2877 __func__, __LINE__);
2878 return SUCCESS;
2879
2880 kill_hba_and_failed:
2881
2882 /* Reset not supported, kill adapter */
2883 dev_info(&instance->pdev->dev, "%s:%d killing adapter scsi%d"
2884 " disableOnlineCtrlReset %d fw_outstanding %d \n",
2885 __func__, __LINE__, instance->host->host_no, instance->disableOnlineCtrlReset,
2886 atomic_read(&instance->fw_outstanding));
2887 megasas_dump_pending_frames(instance);
2888 megaraid_sas_kill_hba(instance);
2889
2890 return FAILED;
2891 }
2892
2893 /**
2894 * megasas_generic_reset - Generic reset routine
2895 * @scmd: Mid-layer SCSI command
2896 *
2897 * This routine implements a generic reset handler for device, bus and host
2898 * reset requests. Device, bus and host specific reset handlers can use this
2899 * function after they do their specific tasks.
2900 */
megasas_generic_reset(struct scsi_cmnd * scmd)2901 static int megasas_generic_reset(struct scsi_cmnd *scmd)
2902 {
2903 int ret_val;
2904 struct megasas_instance *instance;
2905
2906 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2907
2908 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
2909 scmd->cmnd[0], scmd->retries);
2910
2911 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2912 dev_err(&instance->pdev->dev, "cannot recover from previous reset failures\n");
2913 return FAILED;
2914 }
2915
2916 ret_val = megasas_wait_for_outstanding(instance);
2917 if (ret_val == SUCCESS)
2918 dev_notice(&instance->pdev->dev, "reset successful\n");
2919 else
2920 dev_err(&instance->pdev->dev, "failed to do reset\n");
2921
2922 return ret_val;
2923 }
2924
2925 /**
2926 * megasas_reset_timer - quiesce the adapter if required
2927 * @scmd: scsi cmnd
2928 *
2929 * Sets the FW busy flag and reduces the host->can_queue if the
2930 * cmd has not been completed within the timeout period.
2931 */
megasas_reset_timer(struct scsi_cmnd * scmd)2932 static enum scsi_timeout_action megasas_reset_timer(struct scsi_cmnd *scmd)
2933 {
2934 struct megasas_instance *instance;
2935 unsigned long flags;
2936
2937 if (time_after(jiffies, scmd->jiffies_at_alloc +
2938 (scmd_timeout * 2) * HZ)) {
2939 return SCSI_EH_NOT_HANDLED;
2940 }
2941
2942 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2943 if (!(instance->flag & MEGASAS_FW_BUSY)) {
2944 /* FW is busy, throttle IO */
2945 spin_lock_irqsave(instance->host->host_lock, flags);
2946
2947 instance->host->can_queue = instance->throttlequeuedepth;
2948 instance->last_time = jiffies;
2949 instance->flag |= MEGASAS_FW_BUSY;
2950
2951 spin_unlock_irqrestore(instance->host->host_lock, flags);
2952 }
2953 return SCSI_EH_RESET_TIMER;
2954 }
2955
2956 /**
2957 * megasas_dump - This function will print hexdump of provided buffer.
2958 * @buf: Buffer to be dumped
2959 * @sz: Size in bytes
2960 * @format: Different formats of dumping e.g. format=n will
2961 * cause only 'n' 32 bit words to be dumped in a single
2962 * line.
2963 */
2964 inline void
megasas_dump(void * buf,int sz,int format)2965 megasas_dump(void *buf, int sz, int format)
2966 {
2967 int i;
2968 __le32 *buf_loc = (__le32 *)buf;
2969
2970 for (i = 0; i < (sz / sizeof(__le32)); i++) {
2971 if ((i % format) == 0) {
2972 if (i != 0)
2973 printk(KERN_CONT "\n");
2974 printk(KERN_CONT "%08x: ", (i * 4));
2975 }
2976 printk(KERN_CONT "%08x ", le32_to_cpu(buf_loc[i]));
2977 }
2978 printk(KERN_CONT "\n");
2979 }
2980
2981 /**
2982 * megasas_dump_reg_set - This function will print hexdump of register set
2983 * @reg_set: Register set to be dumped
2984 */
2985 inline void
megasas_dump_reg_set(void __iomem * reg_set)2986 megasas_dump_reg_set(void __iomem *reg_set)
2987 {
2988 unsigned int i, sz = 256;
2989 u32 __iomem *reg = (u32 __iomem *)reg_set;
2990
2991 for (i = 0; i < (sz / sizeof(u32)); i++)
2992 printk("%08x: %08x\n", (i * 4), readl(®[i]));
2993 }
2994
2995 /**
2996 * megasas_dump_fusion_io - This function will print key details
2997 * of SCSI IO
2998 * @scmd: SCSI command pointer of SCSI IO
2999 */
3000 void
megasas_dump_fusion_io(struct scsi_cmnd * scmd)3001 megasas_dump_fusion_io(struct scsi_cmnd *scmd)
3002 {
3003 struct megasas_cmd_fusion *cmd = megasas_priv(scmd)->cmd_priv;
3004 union MEGASAS_REQUEST_DESCRIPTOR_UNION *req_desc;
3005 struct megasas_instance *instance;
3006
3007 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3008
3009 scmd_printk(KERN_INFO, scmd,
3010 "scmd: (0x%p) retries: 0x%x allowed: 0x%x\n",
3011 scmd, scmd->retries, scmd->allowed);
3012 scsi_print_command(scmd);
3013
3014 if (cmd) {
3015 req_desc = (union MEGASAS_REQUEST_DESCRIPTOR_UNION *)cmd->request_desc;
3016 scmd_printk(KERN_INFO, scmd, "Request descriptor details:\n");
3017 scmd_printk(KERN_INFO, scmd,
3018 "RequestFlags:0x%x MSIxIndex:0x%x SMID:0x%x LMID:0x%x DevHandle:0x%x\n",
3019 req_desc->SCSIIO.RequestFlags,
3020 req_desc->SCSIIO.MSIxIndex, req_desc->SCSIIO.SMID,
3021 req_desc->SCSIIO.LMID, req_desc->SCSIIO.DevHandle);
3022
3023 printk(KERN_INFO "IO request frame:\n");
3024 megasas_dump(cmd->io_request,
3025 MEGA_MPI2_RAID_DEFAULT_IO_FRAME_SIZE, 8);
3026 printk(KERN_INFO "Chain frame:\n");
3027 megasas_dump(cmd->sg_frame,
3028 instance->max_chain_frame_sz, 8);
3029 }
3030
3031 }
3032
3033 /*
3034 * megasas_dump_sys_regs - This function will dump system registers through
3035 * sysfs.
3036 * @reg_set: Pointer to System register set.
3037 * @buf: Buffer to which output is to be written.
3038 * @return: Number of bytes written to buffer.
3039 */
3040 static inline ssize_t
megasas_dump_sys_regs(void __iomem * reg_set,char * buf)3041 megasas_dump_sys_regs(void __iomem *reg_set, char *buf)
3042 {
3043 unsigned int i, sz = 256;
3044 int bytes_wrote = 0;
3045 char *loc = (char *)buf;
3046 u32 __iomem *reg = (u32 __iomem *)reg_set;
3047
3048 for (i = 0; i < sz / sizeof(u32); i++) {
3049 bytes_wrote += scnprintf(loc + bytes_wrote,
3050 PAGE_SIZE - bytes_wrote,
3051 "%08x: %08x\n", (i * 4),
3052 readl(®[i]));
3053 }
3054 return bytes_wrote;
3055 }
3056
3057 /**
3058 * megasas_reset_bus_host - Bus & host reset handler entry point
3059 * @scmd: Mid-layer SCSI command
3060 */
megasas_reset_bus_host(struct scsi_cmnd * scmd)3061 static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
3062 {
3063 int ret;
3064 struct megasas_instance *instance;
3065
3066 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3067
3068 scmd_printk(KERN_INFO, scmd,
3069 "OCR is requested due to IO timeout!!\n");
3070
3071 scmd_printk(KERN_INFO, scmd,
3072 "SCSI host state: %d SCSI host busy: %d FW outstanding: %d\n",
3073 scmd->device->host->shost_state,
3074 scsi_host_busy(scmd->device->host),
3075 atomic_read(&instance->fw_outstanding));
3076 /*
3077 * First wait for all commands to complete
3078 */
3079 if (instance->adapter_type == MFI_SERIES) {
3080 ret = megasas_generic_reset(scmd);
3081 } else {
3082 megasas_dump_fusion_io(scmd);
3083 ret = megasas_reset_fusion(scmd->device->host,
3084 SCSIIO_TIMEOUT_OCR);
3085 }
3086
3087 return ret;
3088 }
3089
3090 /**
3091 * megasas_task_abort - Issues task abort request to firmware
3092 * (supported only for fusion adapters)
3093 * @scmd: SCSI command pointer
3094 */
megasas_task_abort(struct scsi_cmnd * scmd)3095 static int megasas_task_abort(struct scsi_cmnd *scmd)
3096 {
3097 int ret;
3098 struct megasas_instance *instance;
3099
3100 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3101
3102 if (instance->adapter_type != MFI_SERIES)
3103 ret = megasas_task_abort_fusion(scmd);
3104 else {
3105 sdev_printk(KERN_NOTICE, scmd->device, "TASK ABORT not supported\n");
3106 ret = FAILED;
3107 }
3108
3109 return ret;
3110 }
3111
3112 /**
3113 * megasas_reset_target: Issues target reset request to firmware
3114 * (supported only for fusion adapters)
3115 * @scmd: SCSI command pointer
3116 */
megasas_reset_target(struct scsi_cmnd * scmd)3117 static int megasas_reset_target(struct scsi_cmnd *scmd)
3118 {
3119 int ret;
3120 struct megasas_instance *instance;
3121
3122 instance = (struct megasas_instance *)scmd->device->host->hostdata;
3123
3124 if (instance->adapter_type != MFI_SERIES)
3125 ret = megasas_reset_target_fusion(scmd);
3126 else {
3127 sdev_printk(KERN_NOTICE, scmd->device, "TARGET RESET not supported\n");
3128 ret = FAILED;
3129 }
3130
3131 return ret;
3132 }
3133
3134 /**
3135 * megasas_bios_param - Returns disk geometry for a disk
3136 * @sdev: device handle
3137 * @bdev: block device
3138 * @capacity: drive capacity
3139 * @geom: geometry parameters
3140 */
3141 static int
megasas_bios_param(struct scsi_device * sdev,struct block_device * bdev,sector_t capacity,int geom[])3142 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
3143 sector_t capacity, int geom[])
3144 {
3145 int heads;
3146 int sectors;
3147 sector_t cylinders;
3148 unsigned long tmp;
3149
3150 /* Default heads (64) & sectors (32) */
3151 heads = 64;
3152 sectors = 32;
3153
3154 tmp = heads * sectors;
3155 cylinders = capacity;
3156
3157 sector_div(cylinders, tmp);
3158
3159 /*
3160 * Handle extended translation size for logical drives > 1Gb
3161 */
3162
3163 if (capacity >= 0x200000) {
3164 heads = 255;
3165 sectors = 63;
3166 tmp = heads*sectors;
3167 cylinders = capacity;
3168 sector_div(cylinders, tmp);
3169 }
3170
3171 geom[0] = heads;
3172 geom[1] = sectors;
3173 geom[2] = cylinders;
3174
3175 return 0;
3176 }
3177
megasas_map_queues(struct Scsi_Host * shost)3178 static void megasas_map_queues(struct Scsi_Host *shost)
3179 {
3180 struct megasas_instance *instance;
3181 int qoff = 0, offset;
3182 struct blk_mq_queue_map *map;
3183
3184 instance = (struct megasas_instance *)shost->hostdata;
3185
3186 if (shost->nr_hw_queues == 1)
3187 return;
3188
3189 offset = instance->low_latency_index_start;
3190
3191 /* Setup Default hctx */
3192 map = &shost->tag_set.map[HCTX_TYPE_DEFAULT];
3193 map->nr_queues = instance->msix_vectors - offset;
3194 map->queue_offset = 0;
3195 blk_mq_map_hw_queues(map, &instance->pdev->dev, offset);
3196 qoff += map->nr_queues;
3197 offset += map->nr_queues;
3198
3199 /* we never use READ queue, so can't cheat blk-mq */
3200 shost->tag_set.map[HCTX_TYPE_READ].nr_queues = 0;
3201
3202 /* Setup Poll hctx */
3203 map = &shost->tag_set.map[HCTX_TYPE_POLL];
3204 map->nr_queues = instance->iopoll_q_count;
3205 if (map->nr_queues) {
3206 /*
3207 * The poll queue(s) doesn't have an IRQ (and hence IRQ
3208 * affinity), so use the regular blk-mq cpu mapping
3209 */
3210 map->queue_offset = qoff;
3211 blk_mq_map_queues(map);
3212 }
3213 }
3214
3215 static void megasas_aen_polling(struct work_struct *work);
3216
3217 /**
3218 * megasas_service_aen - Processes an event notification
3219 * @instance: Adapter soft state
3220 * @cmd: AEN command completed by the ISR
3221 *
3222 * For AEN, driver sends a command down to FW that is held by the FW till an
3223 * event occurs. When an event of interest occurs, FW completes the command
3224 * that it was previously holding.
3225 *
3226 * This routines sends SIGIO signal to processes that have registered with the
3227 * driver for AEN.
3228 */
3229 static void
megasas_service_aen(struct megasas_instance * instance,struct megasas_cmd * cmd)3230 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
3231 {
3232 unsigned long flags;
3233
3234 /*
3235 * Don't signal app if it is just an aborted previously registered aen
3236 */
3237 if ((!cmd->abort_aen) && (instance->unload == 0)) {
3238 spin_lock_irqsave(&poll_aen_lock, flags);
3239 megasas_poll_wait_aen = 1;
3240 spin_unlock_irqrestore(&poll_aen_lock, flags);
3241 wake_up(&megasas_poll_wait);
3242 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
3243 }
3244 else
3245 cmd->abort_aen = 0;
3246
3247 instance->aen_cmd = NULL;
3248
3249 megasas_return_cmd(instance, cmd);
3250
3251 if ((instance->unload == 0) &&
3252 ((instance->issuepend_done == 1))) {
3253 struct megasas_aen_event *ev;
3254
3255 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
3256 if (!ev) {
3257 dev_err(&instance->pdev->dev, "megasas_service_aen: out of memory\n");
3258 } else {
3259 ev->instance = instance;
3260 instance->ev = ev;
3261 INIT_DELAYED_WORK(&ev->hotplug_work,
3262 megasas_aen_polling);
3263 schedule_delayed_work(&ev->hotplug_work, 0);
3264 }
3265 }
3266 }
3267
3268 static ssize_t
fw_crash_buffer_store(struct device * cdev,struct device_attribute * attr,const char * buf,size_t count)3269 fw_crash_buffer_store(struct device *cdev,
3270 struct device_attribute *attr, const char *buf, size_t count)
3271 {
3272 struct Scsi_Host *shost = class_to_shost(cdev);
3273 struct megasas_instance *instance =
3274 (struct megasas_instance *) shost->hostdata;
3275 int val = 0;
3276
3277 if (kstrtoint(buf, 0, &val) != 0)
3278 return -EINVAL;
3279
3280 mutex_lock(&instance->crashdump_lock);
3281 instance->fw_crash_buffer_offset = val;
3282 mutex_unlock(&instance->crashdump_lock);
3283 return strlen(buf);
3284 }
3285
3286 static ssize_t
fw_crash_buffer_show(struct device * cdev,struct device_attribute * attr,char * buf)3287 fw_crash_buffer_show(struct device *cdev,
3288 struct device_attribute *attr, char *buf)
3289 {
3290 struct Scsi_Host *shost = class_to_shost(cdev);
3291 struct megasas_instance *instance =
3292 (struct megasas_instance *) shost->hostdata;
3293 u32 size;
3294 unsigned long dmachunk = CRASH_DMA_BUF_SIZE;
3295 unsigned long chunk_left_bytes;
3296 unsigned long src_addr;
3297 u32 buff_offset;
3298
3299 mutex_lock(&instance->crashdump_lock);
3300 buff_offset = instance->fw_crash_buffer_offset;
3301 if (!instance->crash_dump_buf ||
3302 !((instance->fw_crash_state == AVAILABLE) ||
3303 (instance->fw_crash_state == COPYING))) {
3304 dev_err(&instance->pdev->dev,
3305 "Firmware crash dump is not available\n");
3306 mutex_unlock(&instance->crashdump_lock);
3307 return -EINVAL;
3308 }
3309
3310 if (buff_offset > (instance->fw_crash_buffer_size * dmachunk)) {
3311 dev_err(&instance->pdev->dev,
3312 "Firmware crash dump offset is out of range\n");
3313 mutex_unlock(&instance->crashdump_lock);
3314 return 0;
3315 }
3316
3317 size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset;
3318 chunk_left_bytes = dmachunk - (buff_offset % dmachunk);
3319 size = (size > chunk_left_bytes) ? chunk_left_bytes : size;
3320 size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size;
3321
3322 src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] +
3323 (buff_offset % dmachunk);
3324 memcpy(buf, (void *)src_addr, size);
3325 mutex_unlock(&instance->crashdump_lock);
3326
3327 return size;
3328 }
3329
3330 static ssize_t
fw_crash_buffer_size_show(struct device * cdev,struct device_attribute * attr,char * buf)3331 fw_crash_buffer_size_show(struct device *cdev,
3332 struct device_attribute *attr, char *buf)
3333 {
3334 struct Scsi_Host *shost = class_to_shost(cdev);
3335 struct megasas_instance *instance =
3336 (struct megasas_instance *) shost->hostdata;
3337
3338 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)
3339 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE);
3340 }
3341
3342 static ssize_t
fw_crash_state_store(struct device * cdev,struct device_attribute * attr,const char * buf,size_t count)3343 fw_crash_state_store(struct device *cdev,
3344 struct device_attribute *attr, const char *buf, size_t count)
3345 {
3346 struct Scsi_Host *shost = class_to_shost(cdev);
3347 struct megasas_instance *instance =
3348 (struct megasas_instance *) shost->hostdata;
3349 int val = 0;
3350
3351 if (kstrtoint(buf, 0, &val) != 0)
3352 return -EINVAL;
3353
3354 if ((val <= AVAILABLE || val > COPY_ERROR)) {
3355 dev_err(&instance->pdev->dev, "application updates invalid "
3356 "firmware crash state\n");
3357 return -EINVAL;
3358 }
3359
3360 instance->fw_crash_state = val;
3361
3362 if ((val == COPIED) || (val == COPY_ERROR)) {
3363 mutex_lock(&instance->crashdump_lock);
3364 megasas_free_host_crash_buffer(instance);
3365 mutex_unlock(&instance->crashdump_lock);
3366 if (val == COPY_ERROR)
3367 dev_info(&instance->pdev->dev, "application failed to "
3368 "copy Firmware crash dump\n");
3369 else
3370 dev_info(&instance->pdev->dev, "Firmware crash dump "
3371 "copied successfully\n");
3372 }
3373 return strlen(buf);
3374 }
3375
3376 static ssize_t
fw_crash_state_show(struct device * cdev,struct device_attribute * attr,char * buf)3377 fw_crash_state_show(struct device *cdev,
3378 struct device_attribute *attr, char *buf)
3379 {
3380 struct Scsi_Host *shost = class_to_shost(cdev);
3381 struct megasas_instance *instance =
3382 (struct megasas_instance *) shost->hostdata;
3383
3384 return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state);
3385 }
3386
3387 static ssize_t
page_size_show(struct device * cdev,struct device_attribute * attr,char * buf)3388 page_size_show(struct device *cdev,
3389 struct device_attribute *attr, char *buf)
3390 {
3391 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1);
3392 }
3393
3394 static ssize_t
ldio_outstanding_show(struct device * cdev,struct device_attribute * attr,char * buf)3395 ldio_outstanding_show(struct device *cdev, struct device_attribute *attr,
3396 char *buf)
3397 {
3398 struct Scsi_Host *shost = class_to_shost(cdev);
3399 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3400
3401 return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->ldio_outstanding));
3402 }
3403
3404 static ssize_t
fw_cmds_outstanding_show(struct device * cdev,struct device_attribute * attr,char * buf)3405 fw_cmds_outstanding_show(struct device *cdev,
3406 struct device_attribute *attr, char *buf)
3407 {
3408 struct Scsi_Host *shost = class_to_shost(cdev);
3409 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3410
3411 return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->fw_outstanding));
3412 }
3413
3414 static ssize_t
enable_sdev_max_qd_show(struct device * cdev,struct device_attribute * attr,char * buf)3415 enable_sdev_max_qd_show(struct device *cdev,
3416 struct device_attribute *attr, char *buf)
3417 {
3418 struct Scsi_Host *shost = class_to_shost(cdev);
3419 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3420
3421 return snprintf(buf, PAGE_SIZE, "%d\n", instance->enable_sdev_max_qd);
3422 }
3423
3424 static ssize_t
enable_sdev_max_qd_store(struct device * cdev,struct device_attribute * attr,const char * buf,size_t count)3425 enable_sdev_max_qd_store(struct device *cdev,
3426 struct device_attribute *attr, const char *buf, size_t count)
3427 {
3428 struct Scsi_Host *shost = class_to_shost(cdev);
3429 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
3430 u32 val = 0;
3431 bool is_target_prop;
3432 int ret_target_prop = DCMD_FAILED;
3433 struct scsi_device *sdev;
3434
3435 if (kstrtou32(buf, 0, &val) != 0) {
3436 pr_err("megasas: could not set enable_sdev_max_qd\n");
3437 return -EINVAL;
3438 }
3439
3440 mutex_lock(&instance->reset_mutex);
3441 if (val)
3442 instance->enable_sdev_max_qd = true;
3443 else
3444 instance->enable_sdev_max_qd = false;
3445
3446 shost_for_each_device(sdev, shost) {
3447 ret_target_prop = megasas_get_target_prop(instance, sdev);
3448 is_target_prop = (ret_target_prop == DCMD_SUCCESS) ? true : false;
3449 megasas_set_fw_assisted_qd(sdev, is_target_prop);
3450 }
3451 mutex_unlock(&instance->reset_mutex);
3452
3453 return strlen(buf);
3454 }
3455
3456 static ssize_t
dump_system_regs_show(struct device * cdev,struct device_attribute * attr,char * buf)3457 dump_system_regs_show(struct device *cdev,
3458 struct device_attribute *attr, char *buf)
3459 {
3460 struct Scsi_Host *shost = class_to_shost(cdev);
3461 struct megasas_instance *instance =
3462 (struct megasas_instance *)shost->hostdata;
3463
3464 return megasas_dump_sys_regs(instance->reg_set, buf);
3465 }
3466
3467 static ssize_t
raid_map_id_show(struct device * cdev,struct device_attribute * attr,char * buf)3468 raid_map_id_show(struct device *cdev, struct device_attribute *attr,
3469 char *buf)
3470 {
3471 struct Scsi_Host *shost = class_to_shost(cdev);
3472 struct megasas_instance *instance =
3473 (struct megasas_instance *)shost->hostdata;
3474
3475 return snprintf(buf, PAGE_SIZE, "%ld\n",
3476 (unsigned long)instance->map_id);
3477 }
3478
3479 static DEVICE_ATTR_RW(fw_crash_buffer);
3480 static DEVICE_ATTR_RO(fw_crash_buffer_size);
3481 static DEVICE_ATTR_RW(fw_crash_state);
3482 static DEVICE_ATTR_RO(page_size);
3483 static DEVICE_ATTR_RO(ldio_outstanding);
3484 static DEVICE_ATTR_RO(fw_cmds_outstanding);
3485 static DEVICE_ATTR_RW(enable_sdev_max_qd);
3486 static DEVICE_ATTR_RO(dump_system_regs);
3487 static DEVICE_ATTR_RO(raid_map_id);
3488
3489 static struct attribute *megaraid_host_attrs[] = {
3490 &dev_attr_fw_crash_buffer_size.attr,
3491 &dev_attr_fw_crash_buffer.attr,
3492 &dev_attr_fw_crash_state.attr,
3493 &dev_attr_page_size.attr,
3494 &dev_attr_ldio_outstanding.attr,
3495 &dev_attr_fw_cmds_outstanding.attr,
3496 &dev_attr_enable_sdev_max_qd.attr,
3497 &dev_attr_dump_system_regs.attr,
3498 &dev_attr_raid_map_id.attr,
3499 NULL,
3500 };
3501
3502 ATTRIBUTE_GROUPS(megaraid_host);
3503
3504 /*
3505 * Scsi host template for megaraid_sas driver
3506 */
3507 static const struct scsi_host_template megasas_template = {
3508
3509 .module = THIS_MODULE,
3510 .name = "Avago SAS based MegaRAID driver",
3511 .proc_name = "megaraid_sas",
3512 .sdev_configure = megasas_sdev_configure,
3513 .sdev_init = megasas_sdev_init,
3514 .sdev_destroy = megasas_sdev_destroy,
3515 .queuecommand = megasas_queue_command,
3516 .eh_target_reset_handler = megasas_reset_target,
3517 .eh_abort_handler = megasas_task_abort,
3518 .eh_host_reset_handler = megasas_reset_bus_host,
3519 .eh_timed_out = megasas_reset_timer,
3520 .shost_groups = megaraid_host_groups,
3521 .bios_param = megasas_bios_param,
3522 .map_queues = megasas_map_queues,
3523 .mq_poll = megasas_blk_mq_poll,
3524 .change_queue_depth = scsi_change_queue_depth,
3525 .max_segment_size = 0xffffffff,
3526 .cmd_size = sizeof(struct megasas_cmd_priv),
3527 };
3528
3529 /**
3530 * megasas_complete_int_cmd - Completes an internal command
3531 * @instance: Adapter soft state
3532 * @cmd: Command to be completed
3533 *
3534 * The megasas_issue_blocked_cmd() function waits for a command to complete
3535 * after it issues a command. This function wakes up that waiting routine by
3536 * calling wake_up() on the wait queue.
3537 */
3538 static void
megasas_complete_int_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd)3539 megasas_complete_int_cmd(struct megasas_instance *instance,
3540 struct megasas_cmd *cmd)
3541 {
3542 if (cmd->cmd_status_drv == DCMD_INIT)
3543 cmd->cmd_status_drv =
3544 (cmd->frame->io.cmd_status == MFI_STAT_OK) ?
3545 DCMD_SUCCESS : DCMD_FAILED;
3546
3547 wake_up(&instance->int_cmd_wait_q);
3548 }
3549
3550 /**
3551 * megasas_complete_abort - Completes aborting a command
3552 * @instance: Adapter soft state
3553 * @cmd: Cmd that was issued to abort another cmd
3554 *
3555 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
3556 * after it issues an abort on a previously issued command. This function
3557 * wakes up all functions waiting on the same wait queue.
3558 */
3559 static void
megasas_complete_abort(struct megasas_instance * instance,struct megasas_cmd * cmd)3560 megasas_complete_abort(struct megasas_instance *instance,
3561 struct megasas_cmd *cmd)
3562 {
3563 if (cmd->sync_cmd) {
3564 cmd->sync_cmd = 0;
3565 cmd->cmd_status_drv = DCMD_SUCCESS;
3566 wake_up(&instance->abort_cmd_wait_q);
3567 }
3568 }
3569
3570 static void
megasas_set_ld_removed_by_fw(struct megasas_instance * instance)3571 megasas_set_ld_removed_by_fw(struct megasas_instance *instance)
3572 {
3573 uint i;
3574
3575 for (i = 0; (i < MEGASAS_MAX_LD_IDS); i++) {
3576 if (instance->ld_ids_prev[i] != 0xff &&
3577 instance->ld_ids_from_raidmap[i] == 0xff) {
3578 if (megasas_dbg_lvl & LD_PD_DEBUG)
3579 dev_info(&instance->pdev->dev,
3580 "LD target ID %d removed from RAID map\n", i);
3581 instance->ld_tgtid_status[i] = LD_TARGET_ID_DELETED;
3582 }
3583 }
3584 }
3585
3586 /**
3587 * megasas_complete_cmd - Completes a command
3588 * @instance: Adapter soft state
3589 * @cmd: Command to be completed
3590 * @alt_status: If non-zero, use this value as status to
3591 * SCSI mid-layer instead of the value returned
3592 * by the FW. This should be used if caller wants
3593 * an alternate status (as in the case of aborted
3594 * commands)
3595 */
3596 void
megasas_complete_cmd(struct megasas_instance * instance,struct megasas_cmd * cmd,u8 alt_status)3597 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
3598 u8 alt_status)
3599 {
3600 int exception = 0;
3601 struct megasas_header *hdr = &cmd->frame->hdr;
3602 unsigned long flags;
3603 struct fusion_context *fusion = instance->ctrl_context;
3604 u32 opcode, status;
3605
3606 /* flag for the retry reset */
3607 cmd->retry_for_fw_reset = 0;
3608
3609 if (cmd->scmd)
3610 megasas_priv(cmd->scmd)->cmd_priv = NULL;
3611
3612 switch (hdr->cmd) {
3613 case MFI_CMD_INVALID:
3614 /* Some older 1068 controller FW may keep a pended
3615 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
3616 when booting the kdump kernel. Ignore this command to
3617 prevent a kernel panic on shutdown of the kdump kernel. */
3618 dev_warn(&instance->pdev->dev, "MFI_CMD_INVALID command "
3619 "completed\n");
3620 dev_warn(&instance->pdev->dev, "If you have a controller "
3621 "other than PERC5, please upgrade your firmware\n");
3622 break;
3623 case MFI_CMD_PD_SCSI_IO:
3624 case MFI_CMD_LD_SCSI_IO:
3625
3626 /*
3627 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
3628 * issued either through an IO path or an IOCTL path. If it
3629 * was via IOCTL, we will send it to internal completion.
3630 */
3631 if (cmd->sync_cmd) {
3632 cmd->sync_cmd = 0;
3633 megasas_complete_int_cmd(instance, cmd);
3634 break;
3635 }
3636 fallthrough;
3637
3638 case MFI_CMD_LD_READ:
3639 case MFI_CMD_LD_WRITE:
3640
3641 if (alt_status) {
3642 cmd->scmd->result = alt_status << 16;
3643 exception = 1;
3644 }
3645
3646 if (exception) {
3647
3648 atomic_dec(&instance->fw_outstanding);
3649
3650 scsi_dma_unmap(cmd->scmd);
3651 scsi_done(cmd->scmd);
3652 megasas_return_cmd(instance, cmd);
3653
3654 break;
3655 }
3656
3657 switch (hdr->cmd_status) {
3658
3659 case MFI_STAT_OK:
3660 cmd->scmd->result = DID_OK << 16;
3661 break;
3662
3663 case MFI_STAT_SCSI_IO_FAILED:
3664 case MFI_STAT_LD_INIT_IN_PROGRESS:
3665 cmd->scmd->result =
3666 (DID_ERROR << 16) | hdr->scsi_status;
3667 break;
3668
3669 case MFI_STAT_SCSI_DONE_WITH_ERROR:
3670
3671 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
3672
3673 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
3674 memset(cmd->scmd->sense_buffer, 0,
3675 SCSI_SENSE_BUFFERSIZE);
3676 memcpy(cmd->scmd->sense_buffer, cmd->sense,
3677 hdr->sense_len);
3678 }
3679
3680 break;
3681
3682 case MFI_STAT_LD_OFFLINE:
3683 case MFI_STAT_DEVICE_NOT_FOUND:
3684 cmd->scmd->result = DID_BAD_TARGET << 16;
3685 break;
3686
3687 default:
3688 dev_printk(KERN_DEBUG, &instance->pdev->dev, "MFI FW status %#x\n",
3689 hdr->cmd_status);
3690 cmd->scmd->result = DID_ERROR << 16;
3691 break;
3692 }
3693
3694 atomic_dec(&instance->fw_outstanding);
3695
3696 scsi_dma_unmap(cmd->scmd);
3697 scsi_done(cmd->scmd);
3698 megasas_return_cmd(instance, cmd);
3699
3700 break;
3701
3702 case MFI_CMD_SMP:
3703 case MFI_CMD_STP:
3704 case MFI_CMD_NVME:
3705 case MFI_CMD_TOOLBOX:
3706 megasas_complete_int_cmd(instance, cmd);
3707 break;
3708
3709 case MFI_CMD_DCMD:
3710 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
3711 /* Check for LD map update */
3712 if ((opcode == MR_DCMD_LD_MAP_GET_INFO)
3713 && (cmd->frame->dcmd.mbox.b[1] == 1)) {
3714 fusion->fast_path_io = 0;
3715 spin_lock_irqsave(instance->host->host_lock, flags);
3716 status = cmd->frame->hdr.cmd_status;
3717 instance->map_update_cmd = NULL;
3718 if (status != MFI_STAT_OK) {
3719 if (status != MFI_STAT_NOT_FOUND)
3720 dev_warn(&instance->pdev->dev, "map syncfailed, status = 0x%x\n",
3721 cmd->frame->hdr.cmd_status);
3722 else {
3723 megasas_return_cmd(instance, cmd);
3724 spin_unlock_irqrestore(
3725 instance->host->host_lock,
3726 flags);
3727 break;
3728 }
3729 }
3730
3731 megasas_return_cmd(instance, cmd);
3732
3733 /*
3734 * Set fast path IO to ZERO.
3735 * Validate Map will set proper value.
3736 * Meanwhile all IOs will go as LD IO.
3737 */
3738 if (status == MFI_STAT_OK &&
3739 (MR_ValidateMapInfo(instance, (instance->map_id + 1)))) {
3740 instance->map_id++;
3741 fusion->fast_path_io = 1;
3742 } else {
3743 fusion->fast_path_io = 0;
3744 }
3745
3746 if (instance->adapter_type >= INVADER_SERIES)
3747 megasas_set_ld_removed_by_fw(instance);
3748
3749 megasas_sync_map_info(instance);
3750 spin_unlock_irqrestore(instance->host->host_lock,
3751 flags);
3752
3753 break;
3754 }
3755 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
3756 opcode == MR_DCMD_CTRL_EVENT_GET) {
3757 spin_lock_irqsave(&poll_aen_lock, flags);
3758 megasas_poll_wait_aen = 0;
3759 spin_unlock_irqrestore(&poll_aen_lock, flags);
3760 }
3761
3762 /* FW has an updated PD sequence */
3763 if ((opcode == MR_DCMD_SYSTEM_PD_MAP_GET_INFO) &&
3764 (cmd->frame->dcmd.mbox.b[0] == 1)) {
3765
3766 spin_lock_irqsave(instance->host->host_lock, flags);
3767 status = cmd->frame->hdr.cmd_status;
3768 instance->jbod_seq_cmd = NULL;
3769 megasas_return_cmd(instance, cmd);
3770
3771 if (status == MFI_STAT_OK) {
3772 instance->pd_seq_map_id++;
3773 /* Re-register a pd sync seq num cmd */
3774 if (megasas_sync_pd_seq_num(instance, true))
3775 instance->use_seqnum_jbod_fp = false;
3776 } else
3777 instance->use_seqnum_jbod_fp = false;
3778
3779 spin_unlock_irqrestore(instance->host->host_lock, flags);
3780 break;
3781 }
3782
3783 /*
3784 * See if got an event notification
3785 */
3786 if (opcode == MR_DCMD_CTRL_EVENT_WAIT)
3787 megasas_service_aen(instance, cmd);
3788 else
3789 megasas_complete_int_cmd(instance, cmd);
3790
3791 break;
3792
3793 case MFI_CMD_ABORT:
3794 /*
3795 * Cmd issued to abort another cmd returned
3796 */
3797 megasas_complete_abort(instance, cmd);
3798 break;
3799
3800 default:
3801 dev_info(&instance->pdev->dev, "Unknown command completed! [0x%X]\n",
3802 hdr->cmd);
3803 megasas_complete_int_cmd(instance, cmd);
3804 break;
3805 }
3806 }
3807
3808 /**
3809 * megasas_issue_pending_cmds_again - issue all pending cmds
3810 * in FW again because of the fw reset
3811 * @instance: Adapter soft state
3812 */
3813 static inline void
megasas_issue_pending_cmds_again(struct megasas_instance * instance)3814 megasas_issue_pending_cmds_again(struct megasas_instance *instance)
3815 {
3816 struct megasas_cmd *cmd;
3817 struct list_head clist_local;
3818 union megasas_evt_class_locale class_locale;
3819 unsigned long flags;
3820 u32 seq_num;
3821
3822 INIT_LIST_HEAD(&clist_local);
3823 spin_lock_irqsave(&instance->hba_lock, flags);
3824 list_splice_init(&instance->internal_reset_pending_q, &clist_local);
3825 spin_unlock_irqrestore(&instance->hba_lock, flags);
3826
3827 while (!list_empty(&clist_local)) {
3828 cmd = list_entry((&clist_local)->next,
3829 struct megasas_cmd, list);
3830 list_del_init(&cmd->list);
3831
3832 if (cmd->sync_cmd || cmd->scmd) {
3833 dev_notice(&instance->pdev->dev, "command %p, %p:%d"
3834 "detected to be pending while HBA reset\n",
3835 cmd, cmd->scmd, cmd->sync_cmd);
3836
3837 cmd->retry_for_fw_reset++;
3838
3839 if (cmd->retry_for_fw_reset == 3) {
3840 dev_notice(&instance->pdev->dev, "cmd %p, %p:%d"
3841 "was tried multiple times during reset."
3842 "Shutting down the HBA\n",
3843 cmd, cmd->scmd, cmd->sync_cmd);
3844 instance->instancet->disable_intr(instance);
3845 atomic_set(&instance->fw_reset_no_pci_access, 1);
3846 megaraid_sas_kill_hba(instance);
3847 return;
3848 }
3849 }
3850
3851 if (cmd->sync_cmd == 1) {
3852 if (cmd->scmd) {
3853 dev_notice(&instance->pdev->dev, "unexpected"
3854 "cmd attached to internal command!\n");
3855 }
3856 dev_notice(&instance->pdev->dev, "%p synchronous cmd"
3857 "on the internal reset queue,"
3858 "issue it again.\n", cmd);
3859 cmd->cmd_status_drv = DCMD_INIT;
3860 instance->instancet->fire_cmd(instance,
3861 cmd->frame_phys_addr,
3862 0, instance->reg_set);
3863 } else if (cmd->scmd) {
3864 dev_notice(&instance->pdev->dev, "%p scsi cmd [%02x]"
3865 "detected on the internal queue, issue again.\n",
3866 cmd, cmd->scmd->cmnd[0]);
3867
3868 atomic_inc(&instance->fw_outstanding);
3869 instance->instancet->fire_cmd(instance,
3870 cmd->frame_phys_addr,
3871 cmd->frame_count-1, instance->reg_set);
3872 } else {
3873 dev_notice(&instance->pdev->dev, "%p unexpected cmd on the"
3874 "internal reset defer list while re-issue!!\n",
3875 cmd);
3876 }
3877 }
3878
3879 if (instance->aen_cmd) {
3880 dev_notice(&instance->pdev->dev, "aen_cmd in def process\n");
3881 megasas_return_cmd(instance, instance->aen_cmd);
3882
3883 instance->aen_cmd = NULL;
3884 }
3885
3886 /*
3887 * Initiate AEN (Asynchronous Event Notification)
3888 */
3889 seq_num = instance->last_seq_num;
3890 class_locale.members.reserved = 0;
3891 class_locale.members.locale = MR_EVT_LOCALE_ALL;
3892 class_locale.members.class = MR_EVT_CLASS_DEBUG;
3893
3894 megasas_register_aen(instance, seq_num, class_locale.word);
3895 }
3896
3897 /*
3898 * Move the internal reset pending commands to a deferred queue.
3899 *
3900 * We move the commands pending at internal reset time to a
3901 * pending queue. This queue would be flushed after successful
3902 * completion of the internal reset sequence. if the internal reset
3903 * did not complete in time, the kernel reset handler would flush
3904 * these commands.
3905 */
3906 static void
megasas_internal_reset_defer_cmds(struct megasas_instance * instance)3907 megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
3908 {
3909 struct megasas_cmd *cmd;
3910 int i;
3911 u16 max_cmd = instance->max_fw_cmds;
3912 u32 defer_index;
3913 unsigned long flags;
3914
3915 defer_index = 0;
3916 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
3917 for (i = 0; i < max_cmd; i++) {
3918 cmd = instance->cmd_list[i];
3919 if (cmd->sync_cmd == 1 || cmd->scmd) {
3920 dev_notice(&instance->pdev->dev, "moving cmd[%d]:%p:%d:%p"
3921 "on the defer queue as internal\n",
3922 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
3923
3924 if (!list_empty(&cmd->list)) {
3925 dev_notice(&instance->pdev->dev, "ERROR while"
3926 " moving this cmd:%p, %d %p, it was"
3927 "discovered on some list?\n",
3928 cmd, cmd->sync_cmd, cmd->scmd);
3929
3930 list_del_init(&cmd->list);
3931 }
3932 defer_index++;
3933 list_add_tail(&cmd->list,
3934 &instance->internal_reset_pending_q);
3935 }
3936 }
3937 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
3938 }
3939
3940
3941 static void
process_fw_state_change_wq(struct work_struct * work)3942 process_fw_state_change_wq(struct work_struct *work)
3943 {
3944 struct megasas_instance *instance =
3945 container_of(work, struct megasas_instance, work_init);
3946 u32 wait;
3947 unsigned long flags;
3948
3949 if (atomic_read(&instance->adprecovery) != MEGASAS_ADPRESET_SM_INFAULT) {
3950 dev_notice(&instance->pdev->dev, "error, recovery st %x\n",
3951 atomic_read(&instance->adprecovery));
3952 return ;
3953 }
3954
3955 if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
3956 dev_notice(&instance->pdev->dev, "FW detected to be in fault"
3957 "state, restarting it...\n");
3958
3959 instance->instancet->disable_intr(instance);
3960 atomic_set(&instance->fw_outstanding, 0);
3961
3962 atomic_set(&instance->fw_reset_no_pci_access, 1);
3963 instance->instancet->adp_reset(instance, instance->reg_set);
3964 atomic_set(&instance->fw_reset_no_pci_access, 0);
3965
3966 dev_notice(&instance->pdev->dev, "FW restarted successfully,"
3967 "initiating next stage...\n");
3968
3969 dev_notice(&instance->pdev->dev, "HBA recovery state machine,"
3970 "state 2 starting...\n");
3971
3972 /* waiting for about 20 second before start the second init */
3973 for (wait = 0; wait < 30; wait++) {
3974 msleep(1000);
3975 }
3976
3977 if (megasas_transition_to_ready(instance, 1)) {
3978 dev_notice(&instance->pdev->dev, "adapter not ready\n");
3979
3980 atomic_set(&instance->fw_reset_no_pci_access, 1);
3981 megaraid_sas_kill_hba(instance);
3982 return ;
3983 }
3984
3985 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
3986 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
3987 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
3988 ) {
3989 *instance->consumer = *instance->producer;
3990 } else {
3991 *instance->consumer = 0;
3992 *instance->producer = 0;
3993 }
3994
3995 megasas_issue_init_mfi(instance);
3996
3997 spin_lock_irqsave(&instance->hba_lock, flags);
3998 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
3999 spin_unlock_irqrestore(&instance->hba_lock, flags);
4000 instance->instancet->enable_intr(instance);
4001
4002 megasas_issue_pending_cmds_again(instance);
4003 instance->issuepend_done = 1;
4004 }
4005 }
4006
4007 /**
4008 * megasas_deplete_reply_queue - Processes all completed commands
4009 * @instance: Adapter soft state
4010 * @alt_status: Alternate status to be returned to
4011 * SCSI mid-layer instead of the status
4012 * returned by the FW
4013 * Note: this must be called with hba lock held
4014 */
4015 static int
megasas_deplete_reply_queue(struct megasas_instance * instance,u8 alt_status)4016 megasas_deplete_reply_queue(struct megasas_instance *instance,
4017 u8 alt_status)
4018 {
4019 u32 mfiStatus;
4020 u32 fw_state;
4021
4022 if (instance->instancet->check_reset(instance, instance->reg_set) == 1)
4023 return IRQ_HANDLED;
4024
4025 mfiStatus = instance->instancet->clear_intr(instance);
4026 if (mfiStatus == 0) {
4027 /* Hardware may not set outbound_intr_status in MSI-X mode */
4028 if (!instance->msix_vectors)
4029 return IRQ_NONE;
4030 }
4031
4032 instance->mfiStatus = mfiStatus;
4033
4034 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
4035 fw_state = instance->instancet->read_fw_status_reg(
4036 instance) & MFI_STATE_MASK;
4037
4038 if (fw_state != MFI_STATE_FAULT) {
4039 dev_notice(&instance->pdev->dev, "fw state:%x\n",
4040 fw_state);
4041 }
4042
4043 if ((fw_state == MFI_STATE_FAULT) &&
4044 (instance->disableOnlineCtrlReset == 0)) {
4045 dev_notice(&instance->pdev->dev, "wait adp restart\n");
4046
4047 if ((instance->pdev->device ==
4048 PCI_DEVICE_ID_LSI_SAS1064R) ||
4049 (instance->pdev->device ==
4050 PCI_DEVICE_ID_DELL_PERC5) ||
4051 (instance->pdev->device ==
4052 PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
4053
4054 *instance->consumer =
4055 cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
4056 }
4057
4058
4059 instance->instancet->disable_intr(instance);
4060 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
4061 instance->issuepend_done = 0;
4062
4063 atomic_set(&instance->fw_outstanding, 0);
4064 megasas_internal_reset_defer_cmds(instance);
4065
4066 dev_notice(&instance->pdev->dev, "fwState=%x, stage:%d\n",
4067 fw_state, atomic_read(&instance->adprecovery));
4068
4069 schedule_work(&instance->work_init);
4070 return IRQ_HANDLED;
4071
4072 } else {
4073 dev_notice(&instance->pdev->dev, "fwstate:%x, dis_OCR=%x\n",
4074 fw_state, instance->disableOnlineCtrlReset);
4075 }
4076 }
4077
4078 tasklet_schedule(&instance->isr_tasklet);
4079 return IRQ_HANDLED;
4080 }
4081
4082 /**
4083 * megasas_isr - isr entry point
4084 * @irq: IRQ number
4085 * @devp: IRQ context address
4086 */
megasas_isr(int irq,void * devp)4087 static irqreturn_t megasas_isr(int irq, void *devp)
4088 {
4089 struct megasas_irq_context *irq_context = devp;
4090 struct megasas_instance *instance = irq_context->instance;
4091 unsigned long flags;
4092 irqreturn_t rc;
4093
4094 if (atomic_read(&instance->fw_reset_no_pci_access))
4095 return IRQ_HANDLED;
4096
4097 spin_lock_irqsave(&instance->hba_lock, flags);
4098 rc = megasas_deplete_reply_queue(instance, DID_OK);
4099 spin_unlock_irqrestore(&instance->hba_lock, flags);
4100
4101 return rc;
4102 }
4103
4104 /**
4105 * megasas_transition_to_ready - Move the FW to READY state
4106 * @instance: Adapter soft state
4107 * @ocr: Adapter reset state
4108 *
4109 * During the initialization, FW passes can potentially be in any one of
4110 * several possible states. If the FW in operational, waiting-for-handshake
4111 * states, driver must take steps to bring it to ready state. Otherwise, it
4112 * has to wait for the ready state.
4113 */
4114 int
megasas_transition_to_ready(struct megasas_instance * instance,int ocr)4115 megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
4116 {
4117 int i;
4118 u8 max_wait;
4119 u32 fw_state;
4120 u32 abs_state, curr_abs_state;
4121
4122 abs_state = instance->instancet->read_fw_status_reg(instance);
4123 fw_state = abs_state & MFI_STATE_MASK;
4124
4125 if (fw_state != MFI_STATE_READY)
4126 dev_info(&instance->pdev->dev, "Waiting for FW to come to ready"
4127 " state\n");
4128
4129 while (fw_state != MFI_STATE_READY) {
4130
4131 switch (fw_state) {
4132
4133 case MFI_STATE_FAULT:
4134 dev_printk(KERN_ERR, &instance->pdev->dev,
4135 "FW in FAULT state, Fault code:0x%x subcode:0x%x func:%s\n",
4136 abs_state & MFI_STATE_FAULT_CODE,
4137 abs_state & MFI_STATE_FAULT_SUBCODE, __func__);
4138 if (ocr) {
4139 max_wait = MEGASAS_RESET_WAIT_TIME;
4140 break;
4141 } else {
4142 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4143 megasas_dump_reg_set(instance->reg_set);
4144 return -ENODEV;
4145 }
4146
4147 case MFI_STATE_WAIT_HANDSHAKE:
4148 /*
4149 * Set the CLR bit in inbound doorbell
4150 */
4151 if ((instance->pdev->device ==
4152 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4153 (instance->pdev->device ==
4154 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4155 (instance->adapter_type != MFI_SERIES))
4156 writel(
4157 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
4158 &instance->reg_set->doorbell);
4159 else
4160 writel(
4161 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
4162 &instance->reg_set->inbound_doorbell);
4163
4164 max_wait = MEGASAS_RESET_WAIT_TIME;
4165 break;
4166
4167 case MFI_STATE_BOOT_MESSAGE_PENDING:
4168 if ((instance->pdev->device ==
4169 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4170 (instance->pdev->device ==
4171 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4172 (instance->adapter_type != MFI_SERIES))
4173 writel(MFI_INIT_HOTPLUG,
4174 &instance->reg_set->doorbell);
4175 else
4176 writel(MFI_INIT_HOTPLUG,
4177 &instance->reg_set->inbound_doorbell);
4178
4179 max_wait = MEGASAS_RESET_WAIT_TIME;
4180 break;
4181
4182 case MFI_STATE_OPERATIONAL:
4183 /*
4184 * Bring it to READY state; assuming max wait 10 secs
4185 */
4186 instance->instancet->disable_intr(instance);
4187 if ((instance->pdev->device ==
4188 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4189 (instance->pdev->device ==
4190 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
4191 (instance->adapter_type != MFI_SERIES)) {
4192 writel(MFI_RESET_FLAGS,
4193 &instance->reg_set->doorbell);
4194
4195 if (instance->adapter_type != MFI_SERIES) {
4196 for (i = 0; i < (10 * 1000); i += 20) {
4197 if (megasas_readl(
4198 instance,
4199 &instance->
4200 reg_set->
4201 doorbell) & 1)
4202 msleep(20);
4203 else
4204 break;
4205 }
4206 }
4207 } else
4208 writel(MFI_RESET_FLAGS,
4209 &instance->reg_set->inbound_doorbell);
4210
4211 max_wait = MEGASAS_RESET_WAIT_TIME;
4212 break;
4213
4214 case MFI_STATE_UNDEFINED:
4215 /*
4216 * This state should not last for more than 2 seconds
4217 */
4218 max_wait = MEGASAS_RESET_WAIT_TIME;
4219 break;
4220
4221 case MFI_STATE_BB_INIT:
4222 max_wait = MEGASAS_RESET_WAIT_TIME;
4223 break;
4224
4225 case MFI_STATE_FW_INIT:
4226 max_wait = MEGASAS_RESET_WAIT_TIME;
4227 break;
4228
4229 case MFI_STATE_FW_INIT_2:
4230 max_wait = MEGASAS_RESET_WAIT_TIME;
4231 break;
4232
4233 case MFI_STATE_DEVICE_SCAN:
4234 max_wait = MEGASAS_RESET_WAIT_TIME;
4235 break;
4236
4237 case MFI_STATE_FLUSH_CACHE:
4238 max_wait = MEGASAS_RESET_WAIT_TIME;
4239 break;
4240
4241 default:
4242 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Unknown state 0x%x\n",
4243 fw_state);
4244 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4245 megasas_dump_reg_set(instance->reg_set);
4246 return -ENODEV;
4247 }
4248
4249 /*
4250 * The cur_state should not last for more than max_wait secs
4251 */
4252 for (i = 0; i < max_wait * 50; i++) {
4253 curr_abs_state = instance->instancet->
4254 read_fw_status_reg(instance);
4255
4256 if (abs_state == curr_abs_state) {
4257 msleep(20);
4258 } else
4259 break;
4260 }
4261
4262 /*
4263 * Return error if fw_state hasn't changed after max_wait
4264 */
4265 if (curr_abs_state == abs_state) {
4266 dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW state [%d] hasn't changed "
4267 "in %d secs\n", fw_state, max_wait);
4268 dev_printk(KERN_DEBUG, &instance->pdev->dev, "System Register set:\n");
4269 megasas_dump_reg_set(instance->reg_set);
4270 return -ENODEV;
4271 }
4272
4273 abs_state = curr_abs_state;
4274 fw_state = curr_abs_state & MFI_STATE_MASK;
4275 }
4276 dev_info(&instance->pdev->dev, "FW now in Ready state\n");
4277
4278 return 0;
4279 }
4280
4281 /**
4282 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool
4283 * @instance: Adapter soft state
4284 */
megasas_teardown_frame_pool(struct megasas_instance * instance)4285 static void megasas_teardown_frame_pool(struct megasas_instance *instance)
4286 {
4287 int i;
4288 u16 max_cmd = instance->max_mfi_cmds;
4289 struct megasas_cmd *cmd;
4290
4291 if (!instance->frame_dma_pool)
4292 return;
4293
4294 /*
4295 * Return all frames to pool
4296 */
4297 for (i = 0; i < max_cmd; i++) {
4298
4299 cmd = instance->cmd_list[i];
4300
4301 if (cmd->frame)
4302 dma_pool_free(instance->frame_dma_pool, cmd->frame,
4303 cmd->frame_phys_addr);
4304
4305 if (cmd->sense)
4306 dma_pool_free(instance->sense_dma_pool, cmd->sense,
4307 cmd->sense_phys_addr);
4308 }
4309
4310 /*
4311 * Now destroy the pool itself
4312 */
4313 dma_pool_destroy(instance->frame_dma_pool);
4314 dma_pool_destroy(instance->sense_dma_pool);
4315
4316 instance->frame_dma_pool = NULL;
4317 instance->sense_dma_pool = NULL;
4318 }
4319
4320 /**
4321 * megasas_create_frame_pool - Creates DMA pool for cmd frames
4322 * @instance: Adapter soft state
4323 *
4324 * Each command packet has an embedded DMA memory buffer that is used for
4325 * filling MFI frame and the SG list that immediately follows the frame. This
4326 * function creates those DMA memory buffers for each command packet by using
4327 * PCI pool facility.
4328 */
megasas_create_frame_pool(struct megasas_instance * instance)4329 static int megasas_create_frame_pool(struct megasas_instance *instance)
4330 {
4331 int i;
4332 u16 max_cmd;
4333 u32 frame_count;
4334 struct megasas_cmd *cmd;
4335
4336 max_cmd = instance->max_mfi_cmds;
4337
4338 /*
4339 * For MFI controllers.
4340 * max_num_sge = 60
4341 * max_sge_sz = 16 byte (sizeof megasas_sge_skinny)
4342 * Total 960 byte (15 MFI frame of 64 byte)
4343 *
4344 * Fusion adapter require only 3 extra frame.
4345 * max_num_sge = 16 (defined as MAX_IOCTL_SGE)
4346 * max_sge_sz = 12 byte (sizeof megasas_sge64)
4347 * Total 192 byte (3 MFI frame of 64 byte)
4348 */
4349 frame_count = (instance->adapter_type == MFI_SERIES) ?
4350 (15 + 1) : (3 + 1);
4351 instance->mfi_frame_size = MEGAMFI_FRAME_SIZE * frame_count;
4352 /*
4353 * Use DMA pool facility provided by PCI layer
4354 */
4355 instance->frame_dma_pool = dma_pool_create("megasas frame pool",
4356 &instance->pdev->dev,
4357 instance->mfi_frame_size, 256, 0);
4358
4359 if (!instance->frame_dma_pool) {
4360 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup frame pool\n");
4361 return -ENOMEM;
4362 }
4363
4364 instance->sense_dma_pool = dma_pool_create("megasas sense pool",
4365 &instance->pdev->dev, 128,
4366 4, 0);
4367
4368 if (!instance->sense_dma_pool) {
4369 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup sense pool\n");
4370
4371 dma_pool_destroy(instance->frame_dma_pool);
4372 instance->frame_dma_pool = NULL;
4373
4374 return -ENOMEM;
4375 }
4376
4377 /*
4378 * Allocate and attach a frame to each of the commands in cmd_list.
4379 * By making cmd->index as the context instead of the &cmd, we can
4380 * always use 32bit context regardless of the architecture
4381 */
4382 for (i = 0; i < max_cmd; i++) {
4383
4384 cmd = instance->cmd_list[i];
4385
4386 cmd->frame = dma_pool_zalloc(instance->frame_dma_pool,
4387 GFP_KERNEL, &cmd->frame_phys_addr);
4388
4389 cmd->sense = dma_pool_alloc(instance->sense_dma_pool,
4390 GFP_KERNEL, &cmd->sense_phys_addr);
4391
4392 /*
4393 * megasas_teardown_frame_pool() takes care of freeing
4394 * whatever has been allocated
4395 */
4396 if (!cmd->frame || !cmd->sense) {
4397 dev_printk(KERN_DEBUG, &instance->pdev->dev, "dma_pool_alloc failed\n");
4398 megasas_teardown_frame_pool(instance);
4399 return -ENOMEM;
4400 }
4401
4402 cmd->frame->io.context = cpu_to_le32(cmd->index);
4403 cmd->frame->io.pad_0 = 0;
4404 if ((instance->adapter_type == MFI_SERIES) && reset_devices)
4405 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
4406 }
4407
4408 return 0;
4409 }
4410
4411 /**
4412 * megasas_free_cmds - Free all the cmds in the free cmd pool
4413 * @instance: Adapter soft state
4414 */
megasas_free_cmds(struct megasas_instance * instance)4415 void megasas_free_cmds(struct megasas_instance *instance)
4416 {
4417 int i;
4418
4419 /* First free the MFI frame pool */
4420 megasas_teardown_frame_pool(instance);
4421
4422 /* Free all the commands in the cmd_list */
4423 for (i = 0; i < instance->max_mfi_cmds; i++)
4424
4425 kfree(instance->cmd_list[i]);
4426
4427 /* Free the cmd_list buffer itself */
4428 kfree(instance->cmd_list);
4429 instance->cmd_list = NULL;
4430
4431 INIT_LIST_HEAD(&instance->cmd_pool);
4432 }
4433
4434 /**
4435 * megasas_alloc_cmds - Allocates the command packets
4436 * @instance: Adapter soft state
4437 *
4438 * Each command that is issued to the FW, whether IO commands from the OS or
4439 * internal commands like IOCTLs, are wrapped in local data structure called
4440 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
4441 * the FW.
4442 *
4443 * Each frame has a 32-bit field called context (tag). This context is used
4444 * to get back the megasas_cmd from the frame when a frame gets completed in
4445 * the ISR. Typically the address of the megasas_cmd itself would be used as
4446 * the context. But we wanted to keep the differences between 32 and 64 bit
4447 * systems to the mininum. We always use 32 bit integers for the context. In
4448 * this driver, the 32 bit values are the indices into an array cmd_list.
4449 * This array is used only to look up the megasas_cmd given the context. The
4450 * free commands themselves are maintained in a linked list called cmd_pool.
4451 */
megasas_alloc_cmds(struct megasas_instance * instance)4452 int megasas_alloc_cmds(struct megasas_instance *instance)
4453 {
4454 int i;
4455 int j;
4456 u16 max_cmd;
4457 struct megasas_cmd *cmd;
4458
4459 max_cmd = instance->max_mfi_cmds;
4460
4461 /*
4462 * instance->cmd_list is an array of struct megasas_cmd pointers.
4463 * Allocate the dynamic array first and then allocate individual
4464 * commands.
4465 */
4466 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
4467
4468 if (!instance->cmd_list) {
4469 dev_printk(KERN_DEBUG, &instance->pdev->dev, "out of memory\n");
4470 return -ENOMEM;
4471 }
4472
4473 for (i = 0; i < max_cmd; i++) {
4474 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
4475 GFP_KERNEL);
4476
4477 if (!instance->cmd_list[i]) {
4478
4479 for (j = 0; j < i; j++)
4480 kfree(instance->cmd_list[j]);
4481
4482 kfree(instance->cmd_list);
4483 instance->cmd_list = NULL;
4484
4485 return -ENOMEM;
4486 }
4487 }
4488
4489 for (i = 0; i < max_cmd; i++) {
4490 cmd = instance->cmd_list[i];
4491 memset(cmd, 0, sizeof(struct megasas_cmd));
4492 cmd->index = i;
4493 cmd->scmd = NULL;
4494 cmd->instance = instance;
4495
4496 list_add_tail(&cmd->list, &instance->cmd_pool);
4497 }
4498
4499 /*
4500 * Create a frame pool and assign one frame to each cmd
4501 */
4502 if (megasas_create_frame_pool(instance)) {
4503 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error creating frame DMA pool\n");
4504 megasas_free_cmds(instance);
4505 return -ENOMEM;
4506 }
4507
4508 return 0;
4509 }
4510
4511 /*
4512 * dcmd_timeout_ocr_possible - Check if OCR is possible based on Driver/FW state.
4513 * @instance: Adapter soft state
4514 *
4515 * Return 0 for only Fusion adapter, if driver load/unload is not in progress
4516 * or FW is not under OCR.
4517 */
4518 inline int
dcmd_timeout_ocr_possible(struct megasas_instance * instance)4519 dcmd_timeout_ocr_possible(struct megasas_instance *instance) {
4520
4521 if (instance->adapter_type == MFI_SERIES)
4522 return KILL_ADAPTER;
4523 else if (instance->unload ||
4524 test_bit(MEGASAS_FUSION_OCR_NOT_POSSIBLE,
4525 &instance->reset_flags))
4526 return IGNORE_TIMEOUT;
4527 else
4528 return INITIATE_OCR;
4529 }
4530
4531 static void
megasas_get_pd_info(struct megasas_instance * instance,struct scsi_device * sdev)4532 megasas_get_pd_info(struct megasas_instance *instance, struct scsi_device *sdev)
4533 {
4534 int ret;
4535 struct megasas_cmd *cmd;
4536 struct megasas_dcmd_frame *dcmd;
4537
4538 struct MR_PRIV_DEVICE *mr_device_priv_data;
4539 u16 device_id = 0;
4540
4541 device_id = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + sdev->id;
4542 cmd = megasas_get_cmd(instance);
4543
4544 if (!cmd) {
4545 dev_err(&instance->pdev->dev, "Failed to get cmd %s\n", __func__);
4546 return;
4547 }
4548
4549 dcmd = &cmd->frame->dcmd;
4550
4551 memset(instance->pd_info, 0, sizeof(*instance->pd_info));
4552 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4553
4554 dcmd->mbox.s[0] = cpu_to_le16(device_id);
4555 dcmd->cmd = MFI_CMD_DCMD;
4556 dcmd->cmd_status = 0xFF;
4557 dcmd->sge_count = 1;
4558 dcmd->flags = MFI_FRAME_DIR_READ;
4559 dcmd->timeout = 0;
4560 dcmd->pad_0 = 0;
4561 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_PD_INFO));
4562 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_GET_INFO);
4563
4564 megasas_set_dma_settings(instance, dcmd, instance->pd_info_h,
4565 sizeof(struct MR_PD_INFO));
4566
4567 if ((instance->adapter_type != MFI_SERIES) &&
4568 !instance->mask_interrupts)
4569 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4570 else
4571 ret = megasas_issue_polled(instance, cmd);
4572
4573 switch (ret) {
4574 case DCMD_SUCCESS:
4575 mr_device_priv_data = sdev->hostdata;
4576 le16_to_cpus((u16 *)&instance->pd_info->state.ddf.pdType);
4577 mr_device_priv_data->interface_type =
4578 instance->pd_info->state.ddf.pdType.intf;
4579 break;
4580
4581 case DCMD_TIMEOUT:
4582
4583 switch (dcmd_timeout_ocr_possible(instance)) {
4584 case INITIATE_OCR:
4585 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4586 mutex_unlock(&instance->reset_mutex);
4587 megasas_reset_fusion(instance->host,
4588 MFI_IO_TIMEOUT_OCR);
4589 mutex_lock(&instance->reset_mutex);
4590 break;
4591 case KILL_ADAPTER:
4592 megaraid_sas_kill_hba(instance);
4593 break;
4594 case IGNORE_TIMEOUT:
4595 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4596 __func__, __LINE__);
4597 break;
4598 }
4599
4600 break;
4601 }
4602
4603 if (ret != DCMD_TIMEOUT)
4604 megasas_return_cmd(instance, cmd);
4605
4606 return;
4607 }
4608 /*
4609 * megasas_get_pd_list_info - Returns FW's pd_list structure
4610 * @instance: Adapter soft state
4611 * @pd_list: pd_list structure
4612 *
4613 * Issues an internal command (DCMD) to get the FW's controller PD
4614 * list structure. This information is mainly used to find out SYSTEM
4615 * supported by the FW.
4616 */
4617 static int
megasas_get_pd_list(struct megasas_instance * instance)4618 megasas_get_pd_list(struct megasas_instance *instance)
4619 {
4620 int ret = 0, pd_index = 0;
4621 struct megasas_cmd *cmd;
4622 struct megasas_dcmd_frame *dcmd;
4623 struct MR_PD_LIST *ci;
4624 struct MR_PD_ADDRESS *pd_addr;
4625
4626 if (instance->pd_list_not_supported) {
4627 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4628 "not supported by firmware\n");
4629 return ret;
4630 }
4631
4632 ci = instance->pd_list_buf;
4633
4634 cmd = megasas_get_cmd(instance);
4635
4636 if (!cmd) {
4637 dev_printk(KERN_DEBUG, &instance->pdev->dev, "(get_pd_list): Failed to get cmd\n");
4638 return -ENOMEM;
4639 }
4640
4641 dcmd = &cmd->frame->dcmd;
4642
4643 memset(ci, 0, sizeof(*ci));
4644 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4645
4646 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
4647 dcmd->mbox.b[1] = 0;
4648 dcmd->cmd = MFI_CMD_DCMD;
4649 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4650 dcmd->sge_count = 1;
4651 dcmd->flags = MFI_FRAME_DIR_READ;
4652 dcmd->timeout = 0;
4653 dcmd->pad_0 = 0;
4654 dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
4655 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY);
4656
4657 megasas_set_dma_settings(instance, dcmd, instance->pd_list_buf_h,
4658 (MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST)));
4659
4660 if ((instance->adapter_type != MFI_SERIES) &&
4661 !instance->mask_interrupts)
4662 ret = megasas_issue_blocked_cmd(instance, cmd,
4663 MFI_IO_TIMEOUT_SECS);
4664 else
4665 ret = megasas_issue_polled(instance, cmd);
4666
4667 switch (ret) {
4668 case DCMD_FAILED:
4669 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4670 "failed/not supported by firmware\n");
4671
4672 if (instance->adapter_type != MFI_SERIES)
4673 megaraid_sas_kill_hba(instance);
4674 else
4675 instance->pd_list_not_supported = 1;
4676 break;
4677 case DCMD_TIMEOUT:
4678
4679 switch (dcmd_timeout_ocr_possible(instance)) {
4680 case INITIATE_OCR:
4681 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4682 /*
4683 * DCMD failed from AEN path.
4684 * AEN path already hold reset_mutex to avoid PCI access
4685 * while OCR is in progress.
4686 */
4687 mutex_unlock(&instance->reset_mutex);
4688 megasas_reset_fusion(instance->host,
4689 MFI_IO_TIMEOUT_OCR);
4690 mutex_lock(&instance->reset_mutex);
4691 break;
4692 case KILL_ADAPTER:
4693 megaraid_sas_kill_hba(instance);
4694 break;
4695 case IGNORE_TIMEOUT:
4696 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d \n",
4697 __func__, __LINE__);
4698 break;
4699 }
4700
4701 break;
4702
4703 case DCMD_SUCCESS:
4704 pd_addr = ci->addr;
4705 if (megasas_dbg_lvl & LD_PD_DEBUG)
4706 dev_info(&instance->pdev->dev, "%s, sysPD count: 0x%x\n",
4707 __func__, le32_to_cpu(ci->count));
4708
4709 if ((le32_to_cpu(ci->count) >
4710 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL)))
4711 break;
4712
4713 memset(instance->local_pd_list, 0,
4714 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
4715
4716 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) {
4717 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid =
4718 le16_to_cpu(pd_addr->deviceId);
4719 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType =
4720 pd_addr->scsiDevType;
4721 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState =
4722 MR_PD_STATE_SYSTEM;
4723 if (megasas_dbg_lvl & LD_PD_DEBUG)
4724 dev_info(&instance->pdev->dev,
4725 "PD%d: targetID: 0x%03x deviceType:0x%x\n",
4726 pd_index, le16_to_cpu(pd_addr->deviceId),
4727 pd_addr->scsiDevType);
4728 pd_addr++;
4729 }
4730
4731 memcpy(instance->pd_list, instance->local_pd_list,
4732 sizeof(instance->pd_list));
4733 break;
4734
4735 }
4736
4737 if (ret != DCMD_TIMEOUT)
4738 megasas_return_cmd(instance, cmd);
4739
4740 return ret;
4741 }
4742
4743 /*
4744 * megasas_get_ld_list_info - Returns FW's ld_list structure
4745 * @instance: Adapter soft state
4746 * @ld_list: ld_list structure
4747 *
4748 * Issues an internal command (DCMD) to get the FW's controller PD
4749 * list structure. This information is mainly used to find out SYSTEM
4750 * supported by the FW.
4751 */
4752 static int
megasas_get_ld_list(struct megasas_instance * instance)4753 megasas_get_ld_list(struct megasas_instance *instance)
4754 {
4755 int ret = 0, ld_index = 0, ids = 0;
4756 struct megasas_cmd *cmd;
4757 struct megasas_dcmd_frame *dcmd;
4758 struct MR_LD_LIST *ci;
4759 dma_addr_t ci_h = 0;
4760 u32 ld_count;
4761
4762 ci = instance->ld_list_buf;
4763 ci_h = instance->ld_list_buf_h;
4764
4765 cmd = megasas_get_cmd(instance);
4766
4767 if (!cmd) {
4768 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_list: Failed to get cmd\n");
4769 return -ENOMEM;
4770 }
4771
4772 dcmd = &cmd->frame->dcmd;
4773
4774 memset(ci, 0, sizeof(*ci));
4775 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4776
4777 if (instance->supportmax256vd)
4778 dcmd->mbox.b[0] = 1;
4779 dcmd->cmd = MFI_CMD_DCMD;
4780 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4781 dcmd->sge_count = 1;
4782 dcmd->flags = MFI_FRAME_DIR_READ;
4783 dcmd->timeout = 0;
4784 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST));
4785 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST);
4786 dcmd->pad_0 = 0;
4787
4788 megasas_set_dma_settings(instance, dcmd, ci_h,
4789 sizeof(struct MR_LD_LIST));
4790
4791 if ((instance->adapter_type != MFI_SERIES) &&
4792 !instance->mask_interrupts)
4793 ret = megasas_issue_blocked_cmd(instance, cmd,
4794 MFI_IO_TIMEOUT_SECS);
4795 else
4796 ret = megasas_issue_polled(instance, cmd);
4797
4798 ld_count = le32_to_cpu(ci->ldCount);
4799
4800 switch (ret) {
4801 case DCMD_FAILED:
4802 megaraid_sas_kill_hba(instance);
4803 break;
4804 case DCMD_TIMEOUT:
4805
4806 switch (dcmd_timeout_ocr_possible(instance)) {
4807 case INITIATE_OCR:
4808 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4809 /*
4810 * DCMD failed from AEN path.
4811 * AEN path already hold reset_mutex to avoid PCI access
4812 * while OCR is in progress.
4813 */
4814 mutex_unlock(&instance->reset_mutex);
4815 megasas_reset_fusion(instance->host,
4816 MFI_IO_TIMEOUT_OCR);
4817 mutex_lock(&instance->reset_mutex);
4818 break;
4819 case KILL_ADAPTER:
4820 megaraid_sas_kill_hba(instance);
4821 break;
4822 case IGNORE_TIMEOUT:
4823 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4824 __func__, __LINE__);
4825 break;
4826 }
4827
4828 break;
4829
4830 case DCMD_SUCCESS:
4831 if (megasas_dbg_lvl & LD_PD_DEBUG)
4832 dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n",
4833 __func__, ld_count);
4834
4835 if (ld_count > instance->fw_supported_vd_count)
4836 break;
4837
4838 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
4839
4840 for (ld_index = 0; ld_index < ld_count; ld_index++) {
4841 if (ci->ldList[ld_index].state != 0) {
4842 ids = ci->ldList[ld_index].ref.targetId;
4843 instance->ld_ids[ids] = ci->ldList[ld_index].ref.targetId;
4844 if (megasas_dbg_lvl & LD_PD_DEBUG)
4845 dev_info(&instance->pdev->dev,
4846 "LD%d: targetID: 0x%03x\n",
4847 ld_index, ids);
4848 }
4849 }
4850
4851 break;
4852 }
4853
4854 if (ret != DCMD_TIMEOUT)
4855 megasas_return_cmd(instance, cmd);
4856
4857 return ret;
4858 }
4859
4860 /**
4861 * megasas_ld_list_query - Returns FW's ld_list structure
4862 * @instance: Adapter soft state
4863 * @query_type: ld_list structure type
4864 *
4865 * Issues an internal command (DCMD) to get the FW's controller PD
4866 * list structure. This information is mainly used to find out SYSTEM
4867 * supported by the FW.
4868 */
4869 static int
megasas_ld_list_query(struct megasas_instance * instance,u8 query_type)4870 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
4871 {
4872 int ret = 0, ld_index = 0, ids = 0;
4873 struct megasas_cmd *cmd;
4874 struct megasas_dcmd_frame *dcmd;
4875 struct MR_LD_TARGETID_LIST *ci;
4876 dma_addr_t ci_h = 0;
4877 u32 tgtid_count;
4878
4879 ci = instance->ld_targetid_list_buf;
4880 ci_h = instance->ld_targetid_list_buf_h;
4881
4882 cmd = megasas_get_cmd(instance);
4883
4884 if (!cmd) {
4885 dev_warn(&instance->pdev->dev,
4886 "megasas_ld_list_query: Failed to get cmd\n");
4887 return -ENOMEM;
4888 }
4889
4890 dcmd = &cmd->frame->dcmd;
4891
4892 memset(ci, 0, sizeof(*ci));
4893 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4894
4895 dcmd->mbox.b[0] = query_type;
4896 if (instance->supportmax256vd)
4897 dcmd->mbox.b[2] = 1;
4898
4899 dcmd->cmd = MFI_CMD_DCMD;
4900 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4901 dcmd->sge_count = 1;
4902 dcmd->flags = MFI_FRAME_DIR_READ;
4903 dcmd->timeout = 0;
4904 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
4905 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY);
4906 dcmd->pad_0 = 0;
4907
4908 megasas_set_dma_settings(instance, dcmd, ci_h,
4909 sizeof(struct MR_LD_TARGETID_LIST));
4910
4911 if ((instance->adapter_type != MFI_SERIES) &&
4912 !instance->mask_interrupts)
4913 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4914 else
4915 ret = megasas_issue_polled(instance, cmd);
4916
4917 switch (ret) {
4918 case DCMD_FAILED:
4919 dev_info(&instance->pdev->dev,
4920 "DCMD not supported by firmware - %s %d\n",
4921 __func__, __LINE__);
4922 ret = megasas_get_ld_list(instance);
4923 break;
4924 case DCMD_TIMEOUT:
4925 switch (dcmd_timeout_ocr_possible(instance)) {
4926 case INITIATE_OCR:
4927 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4928 /*
4929 * DCMD failed from AEN path.
4930 * AEN path already hold reset_mutex to avoid PCI access
4931 * while OCR is in progress.
4932 */
4933 mutex_unlock(&instance->reset_mutex);
4934 megasas_reset_fusion(instance->host,
4935 MFI_IO_TIMEOUT_OCR);
4936 mutex_lock(&instance->reset_mutex);
4937 break;
4938 case KILL_ADAPTER:
4939 megaraid_sas_kill_hba(instance);
4940 break;
4941 case IGNORE_TIMEOUT:
4942 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4943 __func__, __LINE__);
4944 break;
4945 }
4946
4947 break;
4948 case DCMD_SUCCESS:
4949 tgtid_count = le32_to_cpu(ci->count);
4950
4951 if (megasas_dbg_lvl & LD_PD_DEBUG)
4952 dev_info(&instance->pdev->dev, "%s, LD count: 0x%x\n",
4953 __func__, tgtid_count);
4954
4955 if ((tgtid_count > (instance->fw_supported_vd_count)))
4956 break;
4957
4958 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
4959 for (ld_index = 0; ld_index < tgtid_count; ld_index++) {
4960 ids = ci->targetId[ld_index];
4961 instance->ld_ids[ids] = ci->targetId[ld_index];
4962 if (megasas_dbg_lvl & LD_PD_DEBUG)
4963 dev_info(&instance->pdev->dev, "LD%d: targetID: 0x%03x\n",
4964 ld_index, ci->targetId[ld_index]);
4965 }
4966
4967 break;
4968 }
4969
4970 if (ret != DCMD_TIMEOUT)
4971 megasas_return_cmd(instance, cmd);
4972
4973 return ret;
4974 }
4975
4976 /**
4977 * megasas_host_device_list_query
4978 * dcmd.opcode - MR_DCMD_CTRL_DEVICE_LIST_GET
4979 * dcmd.mbox - reserved
4980 * dcmd.sge IN - ptr to return MR_HOST_DEVICE_LIST structure
4981 * Desc: This DCMD will return the combined device list
4982 * Status: MFI_STAT_OK - List returned successfully
4983 * MFI_STAT_INVALID_CMD - Firmware support for the feature has been
4984 * disabled
4985 * @instance: Adapter soft state
4986 * @is_probe: Driver probe check
4987 * Return: 0 if DCMD succeeded
4988 * non-zero if failed
4989 */
4990 static int
megasas_host_device_list_query(struct megasas_instance * instance,bool is_probe)4991 megasas_host_device_list_query(struct megasas_instance *instance,
4992 bool is_probe)
4993 {
4994 int ret, i, target_id;
4995 struct megasas_cmd *cmd;
4996 struct megasas_dcmd_frame *dcmd;
4997 struct MR_HOST_DEVICE_LIST *ci;
4998 u32 count;
4999 dma_addr_t ci_h;
5000
5001 ci = instance->host_device_list_buf;
5002 ci_h = instance->host_device_list_buf_h;
5003
5004 cmd = megasas_get_cmd(instance);
5005
5006 if (!cmd) {
5007 dev_warn(&instance->pdev->dev,
5008 "%s: failed to get cmd\n",
5009 __func__);
5010 return -ENOMEM;
5011 }
5012
5013 dcmd = &cmd->frame->dcmd;
5014
5015 memset(ci, 0, sizeof(*ci));
5016 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5017
5018 dcmd->mbox.b[0] = is_probe ? 0 : 1;
5019 dcmd->cmd = MFI_CMD_DCMD;
5020 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5021 dcmd->sge_count = 1;
5022 dcmd->flags = MFI_FRAME_DIR_READ;
5023 dcmd->timeout = 0;
5024 dcmd->pad_0 = 0;
5025 dcmd->data_xfer_len = cpu_to_le32(HOST_DEVICE_LIST_SZ);
5026 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_DEVICE_LIST_GET);
5027
5028 megasas_set_dma_settings(instance, dcmd, ci_h, HOST_DEVICE_LIST_SZ);
5029
5030 if (!instance->mask_interrupts) {
5031 ret = megasas_issue_blocked_cmd(instance, cmd,
5032 MFI_IO_TIMEOUT_SECS);
5033 } else {
5034 ret = megasas_issue_polled(instance, cmd);
5035 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5036 }
5037
5038 switch (ret) {
5039 case DCMD_SUCCESS:
5040 /* Fill the internal pd_list and ld_ids array based on
5041 * targetIds returned by FW
5042 */
5043 count = le32_to_cpu(ci->count);
5044
5045 if (count > (MEGASAS_MAX_PD + MAX_LOGICAL_DRIVES_EXT))
5046 break;
5047
5048 if (megasas_dbg_lvl & LD_PD_DEBUG)
5049 dev_info(&instance->pdev->dev, "%s, Device count: 0x%x\n",
5050 __func__, count);
5051
5052 memset(instance->local_pd_list, 0,
5053 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
5054 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
5055 for (i = 0; i < count; i++) {
5056 target_id = le16_to_cpu(ci->host_device_list[i].target_id);
5057 if (ci->host_device_list[i].flags.u.bits.is_sys_pd) {
5058 instance->local_pd_list[target_id].tid = target_id;
5059 instance->local_pd_list[target_id].driveType =
5060 ci->host_device_list[i].scsi_type;
5061 instance->local_pd_list[target_id].driveState =
5062 MR_PD_STATE_SYSTEM;
5063 if (megasas_dbg_lvl & LD_PD_DEBUG)
5064 dev_info(&instance->pdev->dev,
5065 "Device %d: PD targetID: 0x%03x deviceType:0x%x\n",
5066 i, target_id, ci->host_device_list[i].scsi_type);
5067 } else {
5068 instance->ld_ids[target_id] = target_id;
5069 if (megasas_dbg_lvl & LD_PD_DEBUG)
5070 dev_info(&instance->pdev->dev,
5071 "Device %d: LD targetID: 0x%03x\n",
5072 i, target_id);
5073 }
5074 }
5075
5076 memcpy(instance->pd_list, instance->local_pd_list,
5077 sizeof(instance->pd_list));
5078 break;
5079
5080 case DCMD_TIMEOUT:
5081 switch (dcmd_timeout_ocr_possible(instance)) {
5082 case INITIATE_OCR:
5083 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5084 mutex_unlock(&instance->reset_mutex);
5085 megasas_reset_fusion(instance->host,
5086 MFI_IO_TIMEOUT_OCR);
5087 mutex_lock(&instance->reset_mutex);
5088 break;
5089 case KILL_ADAPTER:
5090 megaraid_sas_kill_hba(instance);
5091 break;
5092 case IGNORE_TIMEOUT:
5093 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5094 __func__, __LINE__);
5095 break;
5096 }
5097 break;
5098 case DCMD_FAILED:
5099 dev_err(&instance->pdev->dev,
5100 "%s: MR_DCMD_CTRL_DEVICE_LIST_GET failed\n",
5101 __func__);
5102 break;
5103 }
5104
5105 if (ret != DCMD_TIMEOUT)
5106 megasas_return_cmd(instance, cmd);
5107
5108 return ret;
5109 }
5110
5111 /*
5112 * megasas_update_ext_vd_details : Update details w.r.t Extended VD
5113 * instance : Controller's instance
5114 */
megasas_update_ext_vd_details(struct megasas_instance * instance)5115 static void megasas_update_ext_vd_details(struct megasas_instance *instance)
5116 {
5117 struct fusion_context *fusion;
5118 u32 ventura_map_sz = 0;
5119
5120 fusion = instance->ctrl_context;
5121 /* For MFI based controllers return dummy success */
5122 if (!fusion)
5123 return;
5124
5125 instance->supportmax256vd =
5126 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs;
5127 /* Below is additional check to address future FW enhancement */
5128 if (instance->ctrl_info_buf->max_lds > 64)
5129 instance->supportmax256vd = 1;
5130
5131 instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS
5132 * MEGASAS_MAX_DEV_PER_CHANNEL;
5133 instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS
5134 * MEGASAS_MAX_DEV_PER_CHANNEL;
5135 if (instance->supportmax256vd) {
5136 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT;
5137 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
5138 } else {
5139 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
5140 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
5141 }
5142
5143 dev_info(&instance->pdev->dev,
5144 "FW provided supportMaxExtLDs: %d\tmax_lds: %d\n",
5145 instance->ctrl_info_buf->adapterOperations3.supportMaxExtLDs ? 1 : 0,
5146 instance->ctrl_info_buf->max_lds);
5147
5148 if (instance->max_raid_mapsize) {
5149 ventura_map_sz = instance->max_raid_mapsize *
5150 MR_MIN_MAP_SIZE; /* 64k */
5151 fusion->current_map_sz = ventura_map_sz;
5152 fusion->max_map_sz = ventura_map_sz;
5153 } else {
5154 fusion->old_map_sz =
5155 struct_size_t(struct MR_FW_RAID_MAP, ldSpanMap,
5156 instance->fw_supported_vd_count);
5157 fusion->new_map_sz = sizeof(struct MR_FW_RAID_MAP_EXT);
5158
5159 fusion->max_map_sz =
5160 max(fusion->old_map_sz, fusion->new_map_sz);
5161
5162 if (instance->supportmax256vd)
5163 fusion->current_map_sz = fusion->new_map_sz;
5164 else
5165 fusion->current_map_sz = fusion->old_map_sz;
5166 }
5167 /* irrespective of FW raid maps, driver raid map is constant */
5168 fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP_ALL);
5169 }
5170
5171 /*
5172 * dcmd.opcode - MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES
5173 * dcmd.hdr.length - number of bytes to read
5174 * dcmd.sge - Ptr to MR_SNAPDUMP_PROPERTIES
5175 * Desc: Fill in snapdump properties
5176 * Status: MFI_STAT_OK- Command successful
5177 */
megasas_get_snapdump_properties(struct megasas_instance * instance)5178 void megasas_get_snapdump_properties(struct megasas_instance *instance)
5179 {
5180 int ret = 0;
5181 struct megasas_cmd *cmd;
5182 struct megasas_dcmd_frame *dcmd;
5183 struct MR_SNAPDUMP_PROPERTIES *ci;
5184 dma_addr_t ci_h = 0;
5185
5186 ci = instance->snapdump_prop;
5187 ci_h = instance->snapdump_prop_h;
5188
5189 if (!ci)
5190 return;
5191
5192 cmd = megasas_get_cmd(instance);
5193
5194 if (!cmd) {
5195 dev_dbg(&instance->pdev->dev, "Failed to get a free cmd\n");
5196 return;
5197 }
5198
5199 dcmd = &cmd->frame->dcmd;
5200
5201 memset(ci, 0, sizeof(*ci));
5202 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5203
5204 dcmd->cmd = MFI_CMD_DCMD;
5205 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5206 dcmd->sge_count = 1;
5207 dcmd->flags = MFI_FRAME_DIR_READ;
5208 dcmd->timeout = 0;
5209 dcmd->pad_0 = 0;
5210 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_SNAPDUMP_PROPERTIES));
5211 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SNAPDUMP_GET_PROPERTIES);
5212
5213 megasas_set_dma_settings(instance, dcmd, ci_h,
5214 sizeof(struct MR_SNAPDUMP_PROPERTIES));
5215
5216 if (!instance->mask_interrupts) {
5217 ret = megasas_issue_blocked_cmd(instance, cmd,
5218 MFI_IO_TIMEOUT_SECS);
5219 } else {
5220 ret = megasas_issue_polled(instance, cmd);
5221 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5222 }
5223
5224 switch (ret) {
5225 case DCMD_SUCCESS:
5226 instance->snapdump_wait_time =
5227 min_t(u8, ci->trigger_min_num_sec_before_ocr,
5228 MEGASAS_MAX_SNAP_DUMP_WAIT_TIME);
5229 break;
5230
5231 case DCMD_TIMEOUT:
5232 switch (dcmd_timeout_ocr_possible(instance)) {
5233 case INITIATE_OCR:
5234 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5235 mutex_unlock(&instance->reset_mutex);
5236 megasas_reset_fusion(instance->host,
5237 MFI_IO_TIMEOUT_OCR);
5238 mutex_lock(&instance->reset_mutex);
5239 break;
5240 case KILL_ADAPTER:
5241 megaraid_sas_kill_hba(instance);
5242 break;
5243 case IGNORE_TIMEOUT:
5244 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5245 __func__, __LINE__);
5246 break;
5247 }
5248 }
5249
5250 if (ret != DCMD_TIMEOUT)
5251 megasas_return_cmd(instance, cmd);
5252 }
5253
5254 /**
5255 * megasas_get_ctrl_info - Returns FW's controller structure
5256 * @instance: Adapter soft state
5257 *
5258 * Issues an internal command (DCMD) to get the FW's controller structure.
5259 * This information is mainly used to find out the maximum IO transfer per
5260 * command supported by the FW.
5261 */
5262 int
megasas_get_ctrl_info(struct megasas_instance * instance)5263 megasas_get_ctrl_info(struct megasas_instance *instance)
5264 {
5265 int ret = 0;
5266 struct megasas_cmd *cmd;
5267 struct megasas_dcmd_frame *dcmd;
5268 struct megasas_ctrl_info *ci;
5269 dma_addr_t ci_h = 0;
5270
5271 ci = instance->ctrl_info_buf;
5272 ci_h = instance->ctrl_info_buf_h;
5273
5274 cmd = megasas_get_cmd(instance);
5275
5276 if (!cmd) {
5277 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a free cmd\n");
5278 return -ENOMEM;
5279 }
5280
5281 dcmd = &cmd->frame->dcmd;
5282
5283 memset(ci, 0, sizeof(*ci));
5284 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5285
5286 dcmd->cmd = MFI_CMD_DCMD;
5287 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5288 dcmd->sge_count = 1;
5289 dcmd->flags = MFI_FRAME_DIR_READ;
5290 dcmd->timeout = 0;
5291 dcmd->pad_0 = 0;
5292 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info));
5293 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO);
5294 dcmd->mbox.b[0] = 1;
5295
5296 megasas_set_dma_settings(instance, dcmd, ci_h,
5297 sizeof(struct megasas_ctrl_info));
5298
5299 if ((instance->adapter_type != MFI_SERIES) &&
5300 !instance->mask_interrupts) {
5301 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
5302 } else {
5303 ret = megasas_issue_polled(instance, cmd);
5304 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5305 }
5306
5307 switch (ret) {
5308 case DCMD_SUCCESS:
5309 /* Save required controller information in
5310 * CPU endianness format.
5311 */
5312 le32_to_cpus((u32 *)&ci->properties.OnOffProperties);
5313 le16_to_cpus((u16 *)&ci->properties.on_off_properties2);
5314 le32_to_cpus((u32 *)&ci->adapterOperations2);
5315 le32_to_cpus((u32 *)&ci->adapterOperations3);
5316 le16_to_cpus((u16 *)&ci->adapter_operations4);
5317 le32_to_cpus((u32 *)&ci->adapter_operations5);
5318
5319 /* Update the latest Ext VD info.
5320 * From Init path, store current firmware details.
5321 * From OCR path, detect any firmware properties changes.
5322 * in case of Firmware upgrade without system reboot.
5323 */
5324 megasas_update_ext_vd_details(instance);
5325 instance->support_seqnum_jbod_fp =
5326 ci->adapterOperations3.useSeqNumJbodFP;
5327 instance->support_morethan256jbod =
5328 ci->adapter_operations4.support_pd_map_target_id;
5329 instance->support_nvme_passthru =
5330 ci->adapter_operations4.support_nvme_passthru;
5331 instance->support_pci_lane_margining =
5332 ci->adapter_operations5.support_pci_lane_margining;
5333 instance->task_abort_tmo = ci->TaskAbortTO;
5334 instance->max_reset_tmo = ci->MaxResetTO;
5335
5336 /*Check whether controller is iMR or MR */
5337 instance->is_imr = (ci->memory_size ? 0 : 1);
5338
5339 instance->snapdump_wait_time =
5340 (ci->properties.on_off_properties2.enable_snap_dump ?
5341 MEGASAS_DEFAULT_SNAP_DUMP_WAIT_TIME : 0);
5342
5343 instance->enable_fw_dev_list =
5344 ci->properties.on_off_properties2.enable_fw_dev_list;
5345
5346 dev_info(&instance->pdev->dev,
5347 "controller type\t: %s(%dMB)\n",
5348 instance->is_imr ? "iMR" : "MR",
5349 le16_to_cpu(ci->memory_size));
5350
5351 instance->disableOnlineCtrlReset =
5352 ci->properties.OnOffProperties.disableOnlineCtrlReset;
5353 instance->secure_jbod_support =
5354 ci->adapterOperations3.supportSecurityonJBOD;
5355 dev_info(&instance->pdev->dev, "Online Controller Reset(OCR)\t: %s\n",
5356 instance->disableOnlineCtrlReset ? "Disabled" : "Enabled");
5357 dev_info(&instance->pdev->dev, "Secure JBOD support\t: %s\n",
5358 instance->secure_jbod_support ? "Yes" : "No");
5359 dev_info(&instance->pdev->dev, "NVMe passthru support\t: %s\n",
5360 instance->support_nvme_passthru ? "Yes" : "No");
5361 dev_info(&instance->pdev->dev,
5362 "FW provided TM TaskAbort/Reset timeout\t: %d secs/%d secs\n",
5363 instance->task_abort_tmo, instance->max_reset_tmo);
5364 dev_info(&instance->pdev->dev, "JBOD sequence map support\t: %s\n",
5365 instance->support_seqnum_jbod_fp ? "Yes" : "No");
5366 dev_info(&instance->pdev->dev, "PCI Lane Margining support\t: %s\n",
5367 instance->support_pci_lane_margining ? "Yes" : "No");
5368
5369 break;
5370
5371 case DCMD_TIMEOUT:
5372 switch (dcmd_timeout_ocr_possible(instance)) {
5373 case INITIATE_OCR:
5374 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5375 mutex_unlock(&instance->reset_mutex);
5376 megasas_reset_fusion(instance->host,
5377 MFI_IO_TIMEOUT_OCR);
5378 mutex_lock(&instance->reset_mutex);
5379 break;
5380 case KILL_ADAPTER:
5381 megaraid_sas_kill_hba(instance);
5382 break;
5383 case IGNORE_TIMEOUT:
5384 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5385 __func__, __LINE__);
5386 break;
5387 }
5388 break;
5389 case DCMD_FAILED:
5390 megaraid_sas_kill_hba(instance);
5391 break;
5392
5393 }
5394
5395 if (ret != DCMD_TIMEOUT)
5396 megasas_return_cmd(instance, cmd);
5397
5398 return ret;
5399 }
5400
5401 /*
5402 * megasas_set_crash_dump_params - Sends address of crash dump DMA buffer
5403 * to firmware
5404 *
5405 * @instance: Adapter soft state
5406 * @crash_buf_state - tell FW to turn ON/OFF crash dump feature
5407 MR_CRASH_BUF_TURN_OFF = 0
5408 MR_CRASH_BUF_TURN_ON = 1
5409 * @return 0 on success non-zero on failure.
5410 * Issues an internal command (DCMD) to set parameters for crash dump feature.
5411 * Driver will send address of crash dump DMA buffer and set mbox to tell FW
5412 * that driver supports crash dump feature. This DCMD will be sent only if
5413 * crash dump feature is supported by the FW.
5414 *
5415 */
megasas_set_crash_dump_params(struct megasas_instance * instance,u8 crash_buf_state)5416 int megasas_set_crash_dump_params(struct megasas_instance *instance,
5417 u8 crash_buf_state)
5418 {
5419 int ret = 0;
5420 struct megasas_cmd *cmd;
5421 struct megasas_dcmd_frame *dcmd;
5422
5423 cmd = megasas_get_cmd(instance);
5424
5425 if (!cmd) {
5426 dev_err(&instance->pdev->dev, "Failed to get a free cmd\n");
5427 return -ENOMEM;
5428 }
5429
5430
5431 dcmd = &cmd->frame->dcmd;
5432
5433 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5434 dcmd->mbox.b[0] = crash_buf_state;
5435 dcmd->cmd = MFI_CMD_DCMD;
5436 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
5437 dcmd->sge_count = 1;
5438 dcmd->flags = MFI_FRAME_DIR_NONE;
5439 dcmd->timeout = 0;
5440 dcmd->pad_0 = 0;
5441 dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE);
5442 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS);
5443
5444 megasas_set_dma_settings(instance, dcmd, instance->crash_dump_h,
5445 CRASH_DMA_BUF_SIZE);
5446
5447 if ((instance->adapter_type != MFI_SERIES) &&
5448 !instance->mask_interrupts)
5449 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
5450 else
5451 ret = megasas_issue_polled(instance, cmd);
5452
5453 if (ret == DCMD_TIMEOUT) {
5454 switch (dcmd_timeout_ocr_possible(instance)) {
5455 case INITIATE_OCR:
5456 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
5457 megasas_reset_fusion(instance->host,
5458 MFI_IO_TIMEOUT_OCR);
5459 break;
5460 case KILL_ADAPTER:
5461 megaraid_sas_kill_hba(instance);
5462 break;
5463 case IGNORE_TIMEOUT:
5464 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
5465 __func__, __LINE__);
5466 break;
5467 }
5468 } else
5469 megasas_return_cmd(instance, cmd);
5470
5471 return ret;
5472 }
5473
5474 /**
5475 * megasas_issue_init_mfi - Initializes the FW
5476 * @instance: Adapter soft state
5477 *
5478 * Issues the INIT MFI cmd
5479 */
5480 static int
megasas_issue_init_mfi(struct megasas_instance * instance)5481 megasas_issue_init_mfi(struct megasas_instance *instance)
5482 {
5483 __le32 context;
5484 struct megasas_cmd *cmd;
5485 struct megasas_init_frame *init_frame;
5486 struct megasas_init_queue_info *initq_info;
5487 dma_addr_t init_frame_h;
5488 dma_addr_t initq_info_h;
5489
5490 /*
5491 * Prepare a init frame. Note the init frame points to queue info
5492 * structure. Each frame has SGL allocated after first 64 bytes. For
5493 * this frame - since we don't need any SGL - we use SGL's space as
5494 * queue info structure
5495 *
5496 * We will not get a NULL command below. We just created the pool.
5497 */
5498 cmd = megasas_get_cmd(instance);
5499
5500 init_frame = (struct megasas_init_frame *)cmd->frame;
5501 initq_info = (struct megasas_init_queue_info *)
5502 ((unsigned long)init_frame + 64);
5503
5504 init_frame_h = cmd->frame_phys_addr;
5505 initq_info_h = init_frame_h + 64;
5506
5507 context = init_frame->context;
5508 memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
5509 memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
5510 init_frame->context = context;
5511
5512 initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1);
5513 initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h);
5514
5515 initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h);
5516 initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h);
5517
5518 init_frame->cmd = MFI_CMD_INIT;
5519 init_frame->cmd_status = MFI_STAT_INVALID_STATUS;
5520 init_frame->queue_info_new_phys_addr_lo =
5521 cpu_to_le32(lower_32_bits(initq_info_h));
5522 init_frame->queue_info_new_phys_addr_hi =
5523 cpu_to_le32(upper_32_bits(initq_info_h));
5524
5525 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info));
5526
5527 /*
5528 * disable the intr before firing the init frame to FW
5529 */
5530 instance->instancet->disable_intr(instance);
5531
5532 /*
5533 * Issue the init frame in polled mode
5534 */
5535
5536 if (megasas_issue_polled(instance, cmd)) {
5537 dev_err(&instance->pdev->dev, "Failed to init firmware\n");
5538 megasas_return_cmd(instance, cmd);
5539 goto fail_fw_init;
5540 }
5541
5542 megasas_return_cmd(instance, cmd);
5543
5544 return 0;
5545
5546 fail_fw_init:
5547 return -EINVAL;
5548 }
5549
5550 static u32
megasas_init_adapter_mfi(struct megasas_instance * instance)5551 megasas_init_adapter_mfi(struct megasas_instance *instance)
5552 {
5553 u32 context_sz;
5554 u32 reply_q_sz;
5555
5556 /*
5557 * Get various operational parameters from status register
5558 */
5559 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(instance) & 0x00FFFF;
5560 /*
5561 * Reduce the max supported cmds by 1. This is to ensure that the
5562 * reply_q_sz (1 more than the max cmd that driver may send)
5563 * does not exceed max cmds that the FW can support
5564 */
5565 instance->max_fw_cmds = instance->max_fw_cmds-1;
5566 instance->max_mfi_cmds = instance->max_fw_cmds;
5567 instance->max_num_sge = (instance->instancet->read_fw_status_reg(instance) & 0xFF0000) >>
5568 0x10;
5569 /*
5570 * For MFI skinny adapters, MEGASAS_SKINNY_INT_CMDS commands
5571 * are reserved for IOCTL + driver's internal DCMDs.
5572 */
5573 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
5574 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
5575 instance->max_scsi_cmds = (instance->max_fw_cmds -
5576 MEGASAS_SKINNY_INT_CMDS);
5577 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
5578 } else {
5579 instance->max_scsi_cmds = (instance->max_fw_cmds -
5580 MEGASAS_INT_CMDS);
5581 sema_init(&instance->ioctl_sem, (MEGASAS_MFI_IOCTL_CMDS));
5582 }
5583
5584 instance->cur_can_queue = instance->max_scsi_cmds;
5585 /*
5586 * Create a pool of commands
5587 */
5588 if (megasas_alloc_cmds(instance))
5589 goto fail_alloc_cmds;
5590
5591 /*
5592 * Allocate memory for reply queue. Length of reply queue should
5593 * be _one_ more than the maximum commands handled by the firmware.
5594 *
5595 * Note: When FW completes commands, it places corresponding contex
5596 * values in this circular reply queue. This circular queue is a fairly
5597 * typical producer-consumer queue. FW is the producer (of completed
5598 * commands) and the driver is the consumer.
5599 */
5600 context_sz = sizeof(u32);
5601 reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
5602
5603 instance->reply_queue = dma_alloc_coherent(&instance->pdev->dev,
5604 reply_q_sz, &instance->reply_queue_h, GFP_KERNEL);
5605
5606 if (!instance->reply_queue) {
5607 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Out of DMA mem for reply queue\n");
5608 goto fail_reply_queue;
5609 }
5610
5611 if (megasas_issue_init_mfi(instance))
5612 goto fail_fw_init;
5613
5614 if (megasas_get_ctrl_info(instance)) {
5615 dev_err(&instance->pdev->dev, "(%d): Could get controller info "
5616 "Fail from %s %d\n", instance->unique_id,
5617 __func__, __LINE__);
5618 goto fail_fw_init;
5619 }
5620
5621 instance->fw_support_ieee = 0;
5622 instance->fw_support_ieee =
5623 (instance->instancet->read_fw_status_reg(instance) &
5624 0x04000000);
5625
5626 dev_notice(&instance->pdev->dev, "megasas_init_mfi: fw_support_ieee=%d",
5627 instance->fw_support_ieee);
5628
5629 if (instance->fw_support_ieee)
5630 instance->flag_ieee = 1;
5631
5632 return 0;
5633
5634 fail_fw_init:
5635
5636 dma_free_coherent(&instance->pdev->dev, reply_q_sz,
5637 instance->reply_queue, instance->reply_queue_h);
5638 fail_reply_queue:
5639 megasas_free_cmds(instance);
5640
5641 fail_alloc_cmds:
5642 return 1;
5643 }
5644
5645 static
megasas_setup_irq_poll(struct megasas_instance * instance)5646 void megasas_setup_irq_poll(struct megasas_instance *instance)
5647 {
5648 struct megasas_irq_context *irq_ctx;
5649 u32 count, i;
5650
5651 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
5652
5653 /* Initialize IRQ poll */
5654 for (i = 0; i < count; i++) {
5655 irq_ctx = &instance->irq_context[i];
5656 irq_ctx->os_irq = pci_irq_vector(instance->pdev, i);
5657 irq_ctx->irq_poll_scheduled = false;
5658 irq_poll_init(&irq_ctx->irqpoll,
5659 instance->threshold_reply_count,
5660 megasas_irqpoll);
5661 }
5662 }
5663
5664 /*
5665 * megasas_setup_irqs_ioapic - register legacy interrupts.
5666 * @instance: Adapter soft state
5667 *
5668 * Do not enable interrupt, only setup ISRs.
5669 *
5670 * Return 0 on success.
5671 */
5672 static int
megasas_setup_irqs_ioapic(struct megasas_instance * instance)5673 megasas_setup_irqs_ioapic(struct megasas_instance *instance)
5674 {
5675 struct pci_dev *pdev;
5676
5677 pdev = instance->pdev;
5678 instance->irq_context[0].instance = instance;
5679 instance->irq_context[0].MSIxIndex = 0;
5680 snprintf(instance->irq_context->name, MEGASAS_MSIX_NAME_LEN, "%s%u",
5681 "megasas", instance->host->host_no);
5682 if (request_irq(pci_irq_vector(pdev, 0),
5683 instance->instancet->service_isr, IRQF_SHARED,
5684 instance->irq_context->name, &instance->irq_context[0])) {
5685 dev_err(&instance->pdev->dev,
5686 "Failed to register IRQ from %s %d\n",
5687 __func__, __LINE__);
5688 return -1;
5689 }
5690 instance->perf_mode = MR_LATENCY_PERF_MODE;
5691 instance->low_latency_index_start = 0;
5692 return 0;
5693 }
5694
5695 /**
5696 * megasas_setup_irqs_msix - register MSI-x interrupts.
5697 * @instance: Adapter soft state
5698 * @is_probe: Driver probe check
5699 *
5700 * Do not enable interrupt, only setup ISRs.
5701 *
5702 * Return 0 on success.
5703 */
5704 static int
megasas_setup_irqs_msix(struct megasas_instance * instance,u8 is_probe)5705 megasas_setup_irqs_msix(struct megasas_instance *instance, u8 is_probe)
5706 {
5707 int i, j;
5708 struct pci_dev *pdev;
5709
5710 pdev = instance->pdev;
5711
5712 /* Try MSI-x */
5713 for (i = 0; i < instance->msix_vectors; i++) {
5714 instance->irq_context[i].instance = instance;
5715 instance->irq_context[i].MSIxIndex = i;
5716 snprintf(instance->irq_context[i].name, MEGASAS_MSIX_NAME_LEN, "%s%u-msix%u",
5717 "megasas", instance->host->host_no, i);
5718 if (request_irq(pci_irq_vector(pdev, i),
5719 instance->instancet->service_isr, 0, instance->irq_context[i].name,
5720 &instance->irq_context[i])) {
5721 dev_err(&instance->pdev->dev,
5722 "Failed to register IRQ for vector %d.\n", i);
5723 for (j = 0; j < i; j++) {
5724 if (j < instance->low_latency_index_start)
5725 irq_update_affinity_hint(
5726 pci_irq_vector(pdev, j), NULL);
5727 free_irq(pci_irq_vector(pdev, j),
5728 &instance->irq_context[j]);
5729 }
5730 /* Retry irq register for IO_APIC*/
5731 instance->msix_vectors = 0;
5732 instance->msix_load_balance = false;
5733 if (is_probe) {
5734 pci_free_irq_vectors(instance->pdev);
5735 return megasas_setup_irqs_ioapic(instance);
5736 } else {
5737 return -1;
5738 }
5739 }
5740 }
5741
5742 return 0;
5743 }
5744
5745 /*
5746 * megasas_destroy_irqs- unregister interrupts.
5747 * @instance: Adapter soft state
5748 * return: void
5749 */
5750 static void
megasas_destroy_irqs(struct megasas_instance * instance)5751 megasas_destroy_irqs(struct megasas_instance *instance) {
5752
5753 int i;
5754 int count;
5755 struct megasas_irq_context *irq_ctx;
5756
5757 count = instance->msix_vectors > 0 ? instance->msix_vectors : 1;
5758 if (instance->adapter_type != MFI_SERIES) {
5759 for (i = 0; i < count; i++) {
5760 irq_ctx = &instance->irq_context[i];
5761 irq_poll_disable(&irq_ctx->irqpoll);
5762 }
5763 }
5764
5765 if (instance->msix_vectors)
5766 for (i = 0; i < instance->msix_vectors; i++) {
5767 if (i < instance->low_latency_index_start)
5768 irq_update_affinity_hint(
5769 pci_irq_vector(instance->pdev, i), NULL);
5770 free_irq(pci_irq_vector(instance->pdev, i),
5771 &instance->irq_context[i]);
5772 }
5773 else
5774 free_irq(pci_irq_vector(instance->pdev, 0),
5775 &instance->irq_context[0]);
5776 }
5777
5778 /**
5779 * megasas_setup_jbod_map - setup jbod map for FP seq_number.
5780 * @instance: Adapter soft state
5781 *
5782 * Return 0 on success.
5783 */
5784 void
megasas_setup_jbod_map(struct megasas_instance * instance)5785 megasas_setup_jbod_map(struct megasas_instance *instance)
5786 {
5787 int i;
5788 struct fusion_context *fusion = instance->ctrl_context;
5789 size_t pd_seq_map_sz;
5790
5791 pd_seq_map_sz = struct_size_t(struct MR_PD_CFG_SEQ_NUM_SYNC, seq,
5792 MAX_PHYSICAL_DEVICES);
5793
5794 instance->use_seqnum_jbod_fp =
5795 instance->support_seqnum_jbod_fp;
5796 if (reset_devices || !fusion ||
5797 !instance->support_seqnum_jbod_fp) {
5798 dev_info(&instance->pdev->dev,
5799 "JBOD sequence map is disabled %s %d\n",
5800 __func__, __LINE__);
5801 instance->use_seqnum_jbod_fp = false;
5802 return;
5803 }
5804
5805 if (fusion->pd_seq_sync[0])
5806 goto skip_alloc;
5807
5808 for (i = 0; i < JBOD_MAPS_COUNT; i++) {
5809 fusion->pd_seq_sync[i] = dma_alloc_coherent
5810 (&instance->pdev->dev, pd_seq_map_sz,
5811 &fusion->pd_seq_phys[i], GFP_KERNEL);
5812 if (!fusion->pd_seq_sync[i]) {
5813 dev_err(&instance->pdev->dev,
5814 "Failed to allocate memory from %s %d\n",
5815 __func__, __LINE__);
5816 if (i == 1) {
5817 dma_free_coherent(&instance->pdev->dev,
5818 pd_seq_map_sz, fusion->pd_seq_sync[0],
5819 fusion->pd_seq_phys[0]);
5820 fusion->pd_seq_sync[0] = NULL;
5821 }
5822 instance->use_seqnum_jbod_fp = false;
5823 return;
5824 }
5825 }
5826
5827 skip_alloc:
5828 if (!megasas_sync_pd_seq_num(instance, false) &&
5829 !megasas_sync_pd_seq_num(instance, true))
5830 instance->use_seqnum_jbod_fp = true;
5831 else
5832 instance->use_seqnum_jbod_fp = false;
5833 }
5834
megasas_setup_reply_map(struct megasas_instance * instance)5835 static void megasas_setup_reply_map(struct megasas_instance *instance)
5836 {
5837 const struct cpumask *mask;
5838 unsigned int queue, cpu, low_latency_index_start;
5839
5840 low_latency_index_start = instance->low_latency_index_start;
5841
5842 for (queue = low_latency_index_start; queue < instance->msix_vectors; queue++) {
5843 mask = pci_irq_get_affinity(instance->pdev, queue);
5844 if (!mask)
5845 goto fallback;
5846
5847 for_each_cpu(cpu, mask)
5848 instance->reply_map[cpu] = queue;
5849 }
5850 return;
5851
5852 fallback:
5853 queue = low_latency_index_start;
5854 for_each_possible_cpu(cpu) {
5855 instance->reply_map[cpu] = queue;
5856 if (queue == (instance->msix_vectors - 1))
5857 queue = low_latency_index_start;
5858 else
5859 queue++;
5860 }
5861 }
5862
5863 /**
5864 * megasas_get_device_list - Get the PD and LD device list from FW.
5865 * @instance: Adapter soft state
5866 * @return: Success or failure
5867 *
5868 * Issue DCMDs to Firmware to get the PD and LD list.
5869 * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination
5870 * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list.
5871 */
5872 static
megasas_get_device_list(struct megasas_instance * instance)5873 int megasas_get_device_list(struct megasas_instance *instance)
5874 {
5875 if (instance->enable_fw_dev_list) {
5876 if (megasas_host_device_list_query(instance, true))
5877 return FAILED;
5878 } else {
5879 if (megasas_get_pd_list(instance) < 0) {
5880 dev_err(&instance->pdev->dev, "failed to get PD list\n");
5881 return FAILED;
5882 }
5883
5884 if (megasas_ld_list_query(instance,
5885 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST)) {
5886 dev_err(&instance->pdev->dev, "failed to get LD list\n");
5887 return FAILED;
5888 }
5889 }
5890
5891 return SUCCESS;
5892 }
5893
5894 /**
5895 * megasas_set_high_iops_queue_affinity_and_hint - Set affinity and hint
5896 * for high IOPS queues
5897 * @instance: Adapter soft state
5898 * return: void
5899 */
5900 static inline void
megasas_set_high_iops_queue_affinity_and_hint(struct megasas_instance * instance)5901 megasas_set_high_iops_queue_affinity_and_hint(struct megasas_instance *instance)
5902 {
5903 int i;
5904 unsigned int irq;
5905 const struct cpumask *mask;
5906
5907 if (instance->perf_mode == MR_BALANCED_PERF_MODE) {
5908 mask = cpumask_of_node(dev_to_node(&instance->pdev->dev));
5909
5910 for (i = 0; i < instance->low_latency_index_start; i++) {
5911 irq = pci_irq_vector(instance->pdev, i);
5912 irq_set_affinity_and_hint(irq, mask);
5913 }
5914 }
5915 }
5916
5917 static int
__megasas_alloc_irq_vectors(struct megasas_instance * instance)5918 __megasas_alloc_irq_vectors(struct megasas_instance *instance)
5919 {
5920 int i, irq_flags;
5921 struct irq_affinity desc = { .pre_vectors = instance->low_latency_index_start };
5922 struct irq_affinity *descp = &desc;
5923
5924 irq_flags = PCI_IRQ_MSIX;
5925
5926 if (instance->smp_affinity_enable)
5927 irq_flags |= PCI_IRQ_AFFINITY | PCI_IRQ_ALL_TYPES;
5928 else
5929 descp = NULL;
5930
5931 /* Do not allocate msix vectors for poll_queues.
5932 * msix_vectors is always within a range of FW supported reply queue.
5933 */
5934 i = pci_alloc_irq_vectors_affinity(instance->pdev,
5935 instance->low_latency_index_start,
5936 instance->msix_vectors - instance->iopoll_q_count, irq_flags, descp);
5937
5938 return i;
5939 }
5940
5941 /**
5942 * megasas_alloc_irq_vectors - Allocate IRQ vectors/enable MSI-x vectors
5943 * @instance: Adapter soft state
5944 * return: void
5945 */
5946 static void
megasas_alloc_irq_vectors(struct megasas_instance * instance)5947 megasas_alloc_irq_vectors(struct megasas_instance *instance)
5948 {
5949 int i;
5950 unsigned int num_msix_req;
5951
5952 instance->iopoll_q_count = 0;
5953 if ((instance->adapter_type != MFI_SERIES) &&
5954 poll_queues) {
5955
5956 instance->perf_mode = MR_LATENCY_PERF_MODE;
5957 instance->low_latency_index_start = 1;
5958
5959 /* reserve for default and non-mananged pre-vector. */
5960 if (instance->msix_vectors > (poll_queues + 2))
5961 instance->iopoll_q_count = poll_queues;
5962 else
5963 instance->iopoll_q_count = 0;
5964
5965 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
5966 instance->msix_vectors = min(num_msix_req,
5967 instance->msix_vectors);
5968
5969 }
5970
5971 i = __megasas_alloc_irq_vectors(instance);
5972
5973 if (((instance->perf_mode == MR_BALANCED_PERF_MODE)
5974 || instance->iopoll_q_count) &&
5975 (i != (instance->msix_vectors - instance->iopoll_q_count))) {
5976 if (instance->msix_vectors)
5977 pci_free_irq_vectors(instance->pdev);
5978 /* Disable Balanced IOPS mode and try realloc vectors */
5979 instance->perf_mode = MR_LATENCY_PERF_MODE;
5980 instance->low_latency_index_start = 1;
5981 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
5982
5983 instance->msix_vectors = min(num_msix_req,
5984 instance->msix_vectors);
5985
5986 instance->iopoll_q_count = 0;
5987 i = __megasas_alloc_irq_vectors(instance);
5988
5989 }
5990
5991 dev_info(&instance->pdev->dev,
5992 "requested/available msix %d/%d poll_queue %d\n",
5993 instance->msix_vectors - instance->iopoll_q_count,
5994 i, instance->iopoll_q_count);
5995
5996 if (i > 0)
5997 instance->msix_vectors = i;
5998 else
5999 instance->msix_vectors = 0;
6000
6001 if (instance->smp_affinity_enable)
6002 megasas_set_high_iops_queue_affinity_and_hint(instance);
6003 }
6004
6005 /**
6006 * megasas_init_fw - Initializes the FW
6007 * @instance: Adapter soft state
6008 *
6009 * This is the main function for initializing firmware
6010 */
6011
megasas_init_fw(struct megasas_instance * instance)6012 static int megasas_init_fw(struct megasas_instance *instance)
6013 {
6014 u32 max_sectors_1;
6015 u32 max_sectors_2, tmp_sectors, msix_enable;
6016 u32 scratch_pad_1, scratch_pad_2, scratch_pad_3, status_reg;
6017 resource_size_t base_addr;
6018 void *base_addr_phys;
6019 struct megasas_ctrl_info *ctrl_info = NULL;
6020 unsigned long bar_list;
6021 int i, j, loop;
6022 struct IOV_111 *iovPtr;
6023 struct fusion_context *fusion;
6024 bool intr_coalescing;
6025 unsigned int num_msix_req;
6026 u16 lnksta, speed;
6027
6028 fusion = instance->ctrl_context;
6029
6030 /* Find first memory bar */
6031 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
6032 instance->bar = find_first_bit(&bar_list, BITS_PER_LONG);
6033 if (pci_request_selected_regions(instance->pdev, 1<<instance->bar,
6034 "megasas: LSI")) {
6035 dev_printk(KERN_DEBUG, &instance->pdev->dev, "IO memory region busy!\n");
6036 return -EBUSY;
6037 }
6038
6039 base_addr = pci_resource_start(instance->pdev, instance->bar);
6040 instance->reg_set = ioremap(base_addr, 8192);
6041
6042 if (!instance->reg_set) {
6043 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to map IO mem\n");
6044 goto fail_ioremap;
6045 }
6046
6047 base_addr_phys = &base_addr;
6048 dev_printk(KERN_DEBUG, &instance->pdev->dev,
6049 "BAR:0x%lx BAR's base_addr(phys):%pa mapped virt_addr:0x%p\n",
6050 instance->bar, base_addr_phys, instance->reg_set);
6051
6052 if (instance->adapter_type != MFI_SERIES)
6053 instance->instancet = &megasas_instance_template_fusion;
6054 else {
6055 switch (instance->pdev->device) {
6056 case PCI_DEVICE_ID_LSI_SAS1078R:
6057 case PCI_DEVICE_ID_LSI_SAS1078DE:
6058 instance->instancet = &megasas_instance_template_ppc;
6059 break;
6060 case PCI_DEVICE_ID_LSI_SAS1078GEN2:
6061 case PCI_DEVICE_ID_LSI_SAS0079GEN2:
6062 instance->instancet = &megasas_instance_template_gen2;
6063 break;
6064 case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
6065 case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
6066 instance->instancet = &megasas_instance_template_skinny;
6067 break;
6068 case PCI_DEVICE_ID_LSI_SAS1064R:
6069 case PCI_DEVICE_ID_DELL_PERC5:
6070 default:
6071 instance->instancet = &megasas_instance_template_xscale;
6072 instance->pd_list_not_supported = 1;
6073 break;
6074 }
6075 }
6076
6077 if (megasas_transition_to_ready(instance, 0)) {
6078 dev_info(&instance->pdev->dev,
6079 "Failed to transition controller to ready from %s!\n",
6080 __func__);
6081 if (instance->adapter_type != MFI_SERIES) {
6082 status_reg = instance->instancet->read_fw_status_reg(
6083 instance);
6084 if (status_reg & MFI_RESET_ADAPTER) {
6085 if (megasas_adp_reset_wait_for_ready
6086 (instance, true, 0) == FAILED)
6087 goto fail_ready_state;
6088 } else {
6089 goto fail_ready_state;
6090 }
6091 } else {
6092 atomic_set(&instance->fw_reset_no_pci_access, 1);
6093 instance->instancet->adp_reset
6094 (instance, instance->reg_set);
6095 atomic_set(&instance->fw_reset_no_pci_access, 0);
6096
6097 /*waiting for about 30 second before retry*/
6098 ssleep(30);
6099
6100 if (megasas_transition_to_ready(instance, 0))
6101 goto fail_ready_state;
6102 }
6103
6104 dev_info(&instance->pdev->dev,
6105 "FW restarted successfully from %s!\n",
6106 __func__);
6107 }
6108
6109 megasas_init_ctrl_params(instance);
6110
6111 if (megasas_set_dma_mask(instance))
6112 goto fail_ready_state;
6113
6114 if (megasas_alloc_ctrl_mem(instance))
6115 goto fail_alloc_dma_buf;
6116
6117 if (megasas_alloc_ctrl_dma_buffers(instance))
6118 goto fail_alloc_dma_buf;
6119
6120 fusion = instance->ctrl_context;
6121
6122 if (instance->adapter_type >= VENTURA_SERIES) {
6123 scratch_pad_2 =
6124 megasas_readl(instance,
6125 &instance->reg_set->outbound_scratch_pad_2);
6126 instance->max_raid_mapsize = ((scratch_pad_2 >>
6127 MR_MAX_RAID_MAP_SIZE_OFFSET_SHIFT) &
6128 MR_MAX_RAID_MAP_SIZE_MASK);
6129 }
6130
6131 instance->enable_sdev_max_qd = enable_sdev_max_qd;
6132
6133 switch (instance->adapter_type) {
6134 case VENTURA_SERIES:
6135 fusion->pcie_bw_limitation = true;
6136 break;
6137 case AERO_SERIES:
6138 fusion->r56_div_offload = true;
6139 break;
6140 default:
6141 break;
6142 }
6143
6144 /* Check if MSI-X is supported while in ready state */
6145 msix_enable = (instance->instancet->read_fw_status_reg(instance) &
6146 0x4000000) >> 0x1a;
6147 if (msix_enable && !msix_disable) {
6148
6149 scratch_pad_1 = megasas_readl
6150 (instance, &instance->reg_set->outbound_scratch_pad_1);
6151 /* Check max MSI-X vectors */
6152 if (fusion) {
6153 if (instance->adapter_type == THUNDERBOLT_SERIES) {
6154 /* Thunderbolt Series*/
6155 instance->msix_vectors = (scratch_pad_1
6156 & MR_MAX_REPLY_QUEUES_OFFSET) + 1;
6157 } else {
6158 instance->msix_vectors = ((scratch_pad_1
6159 & MR_MAX_REPLY_QUEUES_EXT_OFFSET)
6160 >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1;
6161
6162 /*
6163 * For Invader series, > 8 MSI-x vectors
6164 * supported by FW/HW implies combined
6165 * reply queue mode is enabled.
6166 * For Ventura series, > 16 MSI-x vectors
6167 * supported by FW/HW implies combined
6168 * reply queue mode is enabled.
6169 */
6170 switch (instance->adapter_type) {
6171 case INVADER_SERIES:
6172 if (instance->msix_vectors > 8)
6173 instance->msix_combined = true;
6174 break;
6175 case AERO_SERIES:
6176 case VENTURA_SERIES:
6177 if (instance->msix_vectors > 16)
6178 instance->msix_combined = true;
6179 break;
6180 }
6181
6182 if (rdpq_enable)
6183 instance->is_rdpq = (scratch_pad_1 & MR_RDPQ_MODE_OFFSET) ?
6184 1 : 0;
6185
6186 if (instance->adapter_type >= INVADER_SERIES &&
6187 !instance->msix_combined) {
6188 instance->msix_load_balance = true;
6189 instance->smp_affinity_enable = false;
6190 }
6191
6192 /* Save 1-15 reply post index address to local memory
6193 * Index 0 is already saved from reg offset
6194 * MPI2_REPLY_POST_HOST_INDEX_OFFSET
6195 */
6196 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) {
6197 instance->reply_post_host_index_addr[loop] =
6198 (u32 __iomem *)
6199 ((u8 __iomem *)instance->reg_set +
6200 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET
6201 + (loop * 0x10));
6202 }
6203 }
6204
6205 dev_info(&instance->pdev->dev,
6206 "firmware supports msix\t: (%d)",
6207 instance->msix_vectors);
6208 if (msix_vectors)
6209 instance->msix_vectors = min(msix_vectors,
6210 instance->msix_vectors);
6211 } else /* MFI adapters */
6212 instance->msix_vectors = 1;
6213
6214
6215 /*
6216 * For Aero (if some conditions are met), driver will configure a
6217 * few additional reply queues with interrupt coalescing enabled.
6218 * These queues with interrupt coalescing enabled are called
6219 * High IOPS queues and rest of reply queues (based on number of
6220 * logical CPUs) are termed as Low latency queues.
6221 *
6222 * Total Number of reply queues = High IOPS queues + low latency queues
6223 *
6224 * For rest of fusion adapters, 1 additional reply queue will be
6225 * reserved for management commands, rest of reply queues
6226 * (based on number of logical CPUs) will be used for IOs and
6227 * referenced as IO queues.
6228 * Total Number of reply queues = 1 + IO queues
6229 *
6230 * MFI adapters supports single MSI-x so single reply queue
6231 * will be used for IO and management commands.
6232 */
6233
6234 intr_coalescing = (scratch_pad_1 & MR_INTR_COALESCING_SUPPORT_OFFSET) ?
6235 true : false;
6236 if (intr_coalescing &&
6237 (num_online_cpus() >= MR_HIGH_IOPS_QUEUE_COUNT) &&
6238 (instance->msix_vectors == MEGASAS_MAX_MSIX_QUEUES))
6239 instance->perf_mode = MR_BALANCED_PERF_MODE;
6240 else
6241 instance->perf_mode = MR_LATENCY_PERF_MODE;
6242
6243
6244 if (instance->adapter_type == AERO_SERIES) {
6245 pcie_capability_read_word(instance->pdev, PCI_EXP_LNKSTA, &lnksta);
6246 speed = lnksta & PCI_EXP_LNKSTA_CLS;
6247
6248 /*
6249 * For Aero, if PCIe link speed is <16 GT/s, then driver should operate
6250 * in latency perf mode and enable R1 PCI bandwidth algorithm
6251 */
6252 if (speed < 0x4) {
6253 instance->perf_mode = MR_LATENCY_PERF_MODE;
6254 fusion->pcie_bw_limitation = true;
6255 }
6256
6257 /*
6258 * Performance mode settings provided through module parameter-perf_mode will
6259 * take affect only for:
6260 * 1. Aero family of adapters.
6261 * 2. When user sets module parameter- perf_mode in range of 0-2.
6262 */
6263 if ((perf_mode >= MR_BALANCED_PERF_MODE) &&
6264 (perf_mode <= MR_LATENCY_PERF_MODE))
6265 instance->perf_mode = perf_mode;
6266 /*
6267 * If intr coalescing is not supported by controller FW, then IOPS
6268 * and Balanced modes are not feasible.
6269 */
6270 if (!intr_coalescing)
6271 instance->perf_mode = MR_LATENCY_PERF_MODE;
6272
6273 }
6274
6275 if (instance->perf_mode == MR_BALANCED_PERF_MODE)
6276 instance->low_latency_index_start =
6277 MR_HIGH_IOPS_QUEUE_COUNT;
6278 else
6279 instance->low_latency_index_start = 1;
6280
6281 num_msix_req = num_online_cpus() + instance->low_latency_index_start;
6282
6283 instance->msix_vectors = min(num_msix_req,
6284 instance->msix_vectors);
6285
6286 megasas_alloc_irq_vectors(instance);
6287 if (!instance->msix_vectors)
6288 instance->msix_load_balance = false;
6289 }
6290 /*
6291 * MSI-X host index 0 is common for all adapter.
6292 * It is used for all MPT based Adapters.
6293 */
6294 if (instance->msix_combined) {
6295 instance->reply_post_host_index_addr[0] =
6296 (u32 *)((u8 *)instance->reg_set +
6297 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET);
6298 } else {
6299 instance->reply_post_host_index_addr[0] =
6300 (u32 *)((u8 *)instance->reg_set +
6301 MPI2_REPLY_POST_HOST_INDEX_OFFSET);
6302 }
6303
6304 if (!instance->msix_vectors) {
6305 i = pci_alloc_irq_vectors(instance->pdev, 1, 1, PCI_IRQ_INTX);
6306 if (i < 0)
6307 goto fail_init_adapter;
6308 }
6309
6310 megasas_setup_reply_map(instance);
6311
6312 dev_info(&instance->pdev->dev,
6313 "current msix/online cpus\t: (%d/%d)\n",
6314 instance->msix_vectors, (unsigned int)num_online_cpus());
6315 dev_info(&instance->pdev->dev,
6316 "RDPQ mode\t: (%s)\n", instance->is_rdpq ? "enabled" : "disabled");
6317
6318 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
6319 (unsigned long)instance);
6320
6321 /*
6322 * Below are default value for legacy Firmware.
6323 * non-fusion based controllers
6324 */
6325 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
6326 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
6327 /* Get operational params, sge flags, send init cmd to controller */
6328 if (instance->instancet->init_adapter(instance))
6329 goto fail_init_adapter;
6330
6331 if (instance->adapter_type >= VENTURA_SERIES) {
6332 scratch_pad_3 =
6333 megasas_readl(instance,
6334 &instance->reg_set->outbound_scratch_pad_3);
6335 if ((scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK) >=
6336 MR_DEFAULT_NVME_PAGE_SHIFT)
6337 instance->nvme_page_size =
6338 (1 << (scratch_pad_3 & MR_NVME_PAGE_SIZE_MASK));
6339
6340 dev_info(&instance->pdev->dev,
6341 "NVME page size\t: (%d)\n", instance->nvme_page_size);
6342 }
6343
6344 if (instance->msix_vectors ?
6345 megasas_setup_irqs_msix(instance, 1) :
6346 megasas_setup_irqs_ioapic(instance))
6347 goto fail_init_adapter;
6348
6349 if (instance->adapter_type != MFI_SERIES)
6350 megasas_setup_irq_poll(instance);
6351
6352 instance->instancet->enable_intr(instance);
6353
6354 dev_info(&instance->pdev->dev, "INIT adapter done\n");
6355
6356 megasas_setup_jbod_map(instance);
6357
6358 if (megasas_get_device_list(instance) != SUCCESS) {
6359 dev_err(&instance->pdev->dev,
6360 "%s: megasas_get_device_list failed\n",
6361 __func__);
6362 goto fail_get_ld_pd_list;
6363 }
6364
6365 /* stream detection initialization */
6366 if (instance->adapter_type >= VENTURA_SERIES) {
6367 fusion->stream_detect_by_ld =
6368 kcalloc(MAX_LOGICAL_DRIVES_EXT,
6369 sizeof(struct LD_STREAM_DETECT *),
6370 GFP_KERNEL);
6371 if (!fusion->stream_detect_by_ld) {
6372 dev_err(&instance->pdev->dev,
6373 "unable to allocate stream detection for pool of LDs\n");
6374 goto fail_get_ld_pd_list;
6375 }
6376 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i) {
6377 fusion->stream_detect_by_ld[i] =
6378 kzalloc(sizeof(struct LD_STREAM_DETECT),
6379 GFP_KERNEL);
6380 if (!fusion->stream_detect_by_ld[i]) {
6381 dev_err(&instance->pdev->dev,
6382 "unable to allocate stream detect by LD\n");
6383 for (j = 0; j < i; ++j)
6384 kfree(fusion->stream_detect_by_ld[j]);
6385 kfree(fusion->stream_detect_by_ld);
6386 fusion->stream_detect_by_ld = NULL;
6387 goto fail_get_ld_pd_list;
6388 }
6389 fusion->stream_detect_by_ld[i]->mru_bit_map
6390 = MR_STREAM_BITMAP;
6391 }
6392 }
6393
6394 /*
6395 * Compute the max allowed sectors per IO: The controller info has two
6396 * limits on max sectors. Driver should use the minimum of these two.
6397 *
6398 * 1 << stripe_sz_ops.min = max sectors per strip
6399 *
6400 * Note that older firmwares ( < FW ver 30) didn't report information
6401 * to calculate max_sectors_1. So the number ended up as zero always.
6402 */
6403 tmp_sectors = 0;
6404 ctrl_info = instance->ctrl_info_buf;
6405
6406 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
6407 le16_to_cpu(ctrl_info->max_strips_per_io);
6408 max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size);
6409
6410 tmp_sectors = min_t(u32, max_sectors_1, max_sectors_2);
6411
6412 instance->peerIsPresent = ctrl_info->cluster.peerIsPresent;
6413 instance->passive = ctrl_info->cluster.passive;
6414 memcpy(instance->clusterId, ctrl_info->clusterId, sizeof(instance->clusterId));
6415 instance->UnevenSpanSupport =
6416 ctrl_info->adapterOperations2.supportUnevenSpans;
6417 if (instance->UnevenSpanSupport) {
6418 struct fusion_context *fusion = instance->ctrl_context;
6419 if (MR_ValidateMapInfo(instance, instance->map_id))
6420 fusion->fast_path_io = 1;
6421 else
6422 fusion->fast_path_io = 0;
6423
6424 }
6425 if (ctrl_info->host_interface.SRIOV) {
6426 instance->requestorId = ctrl_info->iov.requestorId;
6427 if (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) {
6428 if (!ctrl_info->adapterOperations2.activePassive)
6429 instance->PlasmaFW111 = 1;
6430
6431 dev_info(&instance->pdev->dev, "SR-IOV: firmware type: %s\n",
6432 instance->PlasmaFW111 ? "1.11" : "new");
6433
6434 if (instance->PlasmaFW111) {
6435 iovPtr = (struct IOV_111 *)
6436 ((unsigned char *)ctrl_info + IOV_111_OFFSET);
6437 instance->requestorId = iovPtr->requestorId;
6438 }
6439 }
6440 dev_info(&instance->pdev->dev, "SRIOV: VF requestorId %d\n",
6441 instance->requestorId);
6442 }
6443
6444 instance->crash_dump_fw_support =
6445 ctrl_info->adapterOperations3.supportCrashDump;
6446 instance->crash_dump_drv_support =
6447 (instance->crash_dump_fw_support &&
6448 instance->crash_dump_buf);
6449 if (instance->crash_dump_drv_support)
6450 megasas_set_crash_dump_params(instance,
6451 MR_CRASH_BUF_TURN_OFF);
6452
6453 else {
6454 if (instance->crash_dump_buf)
6455 dma_free_coherent(&instance->pdev->dev,
6456 CRASH_DMA_BUF_SIZE,
6457 instance->crash_dump_buf,
6458 instance->crash_dump_h);
6459 instance->crash_dump_buf = NULL;
6460 }
6461
6462 if (instance->snapdump_wait_time) {
6463 megasas_get_snapdump_properties(instance);
6464 dev_info(&instance->pdev->dev, "Snap dump wait time\t: %d\n",
6465 instance->snapdump_wait_time);
6466 }
6467
6468 dev_info(&instance->pdev->dev,
6469 "pci id\t\t: (0x%04x)/(0x%04x)/(0x%04x)/(0x%04x)\n",
6470 le16_to_cpu(ctrl_info->pci.vendor_id),
6471 le16_to_cpu(ctrl_info->pci.device_id),
6472 le16_to_cpu(ctrl_info->pci.sub_vendor_id),
6473 le16_to_cpu(ctrl_info->pci.sub_device_id));
6474 dev_info(&instance->pdev->dev, "unevenspan support : %s\n",
6475 instance->UnevenSpanSupport ? "yes" : "no");
6476 dev_info(&instance->pdev->dev, "firmware crash dump : %s\n",
6477 instance->crash_dump_drv_support ? "yes" : "no");
6478 dev_info(&instance->pdev->dev, "JBOD sequence map : %s\n",
6479 instance->use_seqnum_jbod_fp ? "enabled" : "disabled");
6480
6481 instance->max_sectors_per_req = instance->max_num_sge *
6482 SGE_BUFFER_SIZE / 512;
6483 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
6484 instance->max_sectors_per_req = tmp_sectors;
6485
6486 /* Check for valid throttlequeuedepth module parameter */
6487 if (throttlequeuedepth &&
6488 throttlequeuedepth <= instance->max_scsi_cmds)
6489 instance->throttlequeuedepth = throttlequeuedepth;
6490 else
6491 instance->throttlequeuedepth =
6492 MEGASAS_THROTTLE_QUEUE_DEPTH;
6493
6494 if ((resetwaittime < 1) ||
6495 (resetwaittime > MEGASAS_RESET_WAIT_TIME))
6496 resetwaittime = MEGASAS_RESET_WAIT_TIME;
6497
6498 if ((scmd_timeout < 10) || (scmd_timeout > MEGASAS_DEFAULT_CMD_TIMEOUT))
6499 scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
6500
6501 /* Launch SR-IOV heartbeat timer */
6502 if (instance->requestorId) {
6503 if (!megasas_sriov_start_heartbeat(instance, 1)) {
6504 megasas_start_timer(instance);
6505 } else {
6506 instance->skip_heartbeat_timer_del = 1;
6507 goto fail_get_ld_pd_list;
6508 }
6509 }
6510
6511 /*
6512 * Create and start watchdog thread which will monitor
6513 * controller state every 1 sec and trigger OCR when
6514 * it enters fault state
6515 */
6516 if (instance->adapter_type != MFI_SERIES)
6517 if (megasas_fusion_start_watchdog(instance) != SUCCESS)
6518 goto fail_start_watchdog;
6519
6520 return 0;
6521
6522 fail_start_watchdog:
6523 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
6524 del_timer_sync(&instance->sriov_heartbeat_timer);
6525 fail_get_ld_pd_list:
6526 instance->instancet->disable_intr(instance);
6527 megasas_destroy_irqs(instance);
6528 fail_init_adapter:
6529 if (instance->msix_vectors)
6530 pci_free_irq_vectors(instance->pdev);
6531 instance->msix_vectors = 0;
6532 fail_alloc_dma_buf:
6533 megasas_free_ctrl_dma_buffers(instance);
6534 megasas_free_ctrl_mem(instance);
6535 fail_ready_state:
6536 iounmap(instance->reg_set);
6537
6538 fail_ioremap:
6539 pci_release_selected_regions(instance->pdev, 1<<instance->bar);
6540
6541 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
6542 __func__, __LINE__);
6543 return -EINVAL;
6544 }
6545
6546 /**
6547 * megasas_release_mfi - Reverses the FW initialization
6548 * @instance: Adapter soft state
6549 */
megasas_release_mfi(struct megasas_instance * instance)6550 static void megasas_release_mfi(struct megasas_instance *instance)
6551 {
6552 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
6553
6554 if (instance->reply_queue)
6555 dma_free_coherent(&instance->pdev->dev, reply_q_sz,
6556 instance->reply_queue, instance->reply_queue_h);
6557
6558 megasas_free_cmds(instance);
6559
6560 iounmap(instance->reg_set);
6561
6562 pci_release_selected_regions(instance->pdev, 1<<instance->bar);
6563 }
6564
6565 /**
6566 * megasas_get_seq_num - Gets latest event sequence numbers
6567 * @instance: Adapter soft state
6568 * @eli: FW event log sequence numbers information
6569 *
6570 * FW maintains a log of all events in a non-volatile area. Upper layers would
6571 * usually find out the latest sequence number of the events, the seq number at
6572 * the boot etc. They would "read" all the events below the latest seq number
6573 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
6574 * number), they would subsribe to AEN (asynchronous event notification) and
6575 * wait for the events to happen.
6576 */
6577 static int
megasas_get_seq_num(struct megasas_instance * instance,struct megasas_evt_log_info * eli)6578 megasas_get_seq_num(struct megasas_instance *instance,
6579 struct megasas_evt_log_info *eli)
6580 {
6581 struct megasas_cmd *cmd;
6582 struct megasas_dcmd_frame *dcmd;
6583 struct megasas_evt_log_info *el_info;
6584 dma_addr_t el_info_h = 0;
6585 int ret;
6586
6587 cmd = megasas_get_cmd(instance);
6588
6589 if (!cmd) {
6590 return -ENOMEM;
6591 }
6592
6593 dcmd = &cmd->frame->dcmd;
6594 el_info = dma_alloc_coherent(&instance->pdev->dev,
6595 sizeof(struct megasas_evt_log_info),
6596 &el_info_h, GFP_KERNEL);
6597 if (!el_info) {
6598 megasas_return_cmd(instance, cmd);
6599 return -ENOMEM;
6600 }
6601
6602 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6603
6604 dcmd->cmd = MFI_CMD_DCMD;
6605 dcmd->cmd_status = 0x0;
6606 dcmd->sge_count = 1;
6607 dcmd->flags = MFI_FRAME_DIR_READ;
6608 dcmd->timeout = 0;
6609 dcmd->pad_0 = 0;
6610 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info));
6611 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO);
6612
6613 megasas_set_dma_settings(instance, dcmd, el_info_h,
6614 sizeof(struct megasas_evt_log_info));
6615
6616 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
6617 if (ret != DCMD_SUCCESS) {
6618 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
6619 __func__, __LINE__);
6620 goto dcmd_failed;
6621 }
6622
6623 /*
6624 * Copy the data back into callers buffer
6625 */
6626 eli->newest_seq_num = el_info->newest_seq_num;
6627 eli->oldest_seq_num = el_info->oldest_seq_num;
6628 eli->clear_seq_num = el_info->clear_seq_num;
6629 eli->shutdown_seq_num = el_info->shutdown_seq_num;
6630 eli->boot_seq_num = el_info->boot_seq_num;
6631
6632 dcmd_failed:
6633 dma_free_coherent(&instance->pdev->dev,
6634 sizeof(struct megasas_evt_log_info),
6635 el_info, el_info_h);
6636
6637 megasas_return_cmd(instance, cmd);
6638
6639 return ret;
6640 }
6641
6642 /**
6643 * megasas_register_aen - Registers for asynchronous event notification
6644 * @instance: Adapter soft state
6645 * @seq_num: The starting sequence number
6646 * @class_locale_word: Class of the event
6647 *
6648 * This function subscribes for AEN for events beyond the @seq_num. It requests
6649 * to be notified if and only if the event is of type @class_locale
6650 */
6651 static int
megasas_register_aen(struct megasas_instance * instance,u32 seq_num,u32 class_locale_word)6652 megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
6653 u32 class_locale_word)
6654 {
6655 int ret_val;
6656 struct megasas_cmd *cmd;
6657 struct megasas_dcmd_frame *dcmd;
6658 union megasas_evt_class_locale curr_aen;
6659 union megasas_evt_class_locale prev_aen;
6660
6661 /*
6662 * If there an AEN pending already (aen_cmd), check if the
6663 * class_locale of that pending AEN is inclusive of the new
6664 * AEN request we currently have. If it is, then we don't have
6665 * to do anything. In other words, whichever events the current
6666 * AEN request is subscribing to, have already been subscribed
6667 * to.
6668 *
6669 * If the old_cmd is _not_ inclusive, then we have to abort
6670 * that command, form a class_locale that is superset of both
6671 * old and current and re-issue to the FW
6672 */
6673
6674 curr_aen.word = class_locale_word;
6675
6676 if (instance->aen_cmd) {
6677
6678 prev_aen.word =
6679 le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]);
6680
6681 if ((curr_aen.members.class < MFI_EVT_CLASS_DEBUG) ||
6682 (curr_aen.members.class > MFI_EVT_CLASS_DEAD)) {
6683 dev_info(&instance->pdev->dev,
6684 "%s %d out of range class %d send by application\n",
6685 __func__, __LINE__, curr_aen.members.class);
6686 return 0;
6687 }
6688
6689 /*
6690 * A class whose enum value is smaller is inclusive of all
6691 * higher values. If a PROGRESS (= -1) was previously
6692 * registered, then a new registration requests for higher
6693 * classes need not be sent to FW. They are automatically
6694 * included.
6695 *
6696 * Locale numbers don't have such hierarchy. They are bitmap
6697 * values
6698 */
6699 if ((prev_aen.members.class <= curr_aen.members.class) &&
6700 !((prev_aen.members.locale & curr_aen.members.locale) ^
6701 curr_aen.members.locale)) {
6702 /*
6703 * Previously issued event registration includes
6704 * current request. Nothing to do.
6705 */
6706 return 0;
6707 } else {
6708 curr_aen.members.locale |= prev_aen.members.locale;
6709
6710 if (prev_aen.members.class < curr_aen.members.class)
6711 curr_aen.members.class = prev_aen.members.class;
6712
6713 instance->aen_cmd->abort_aen = 1;
6714 ret_val = megasas_issue_blocked_abort_cmd(instance,
6715 instance->
6716 aen_cmd, 30);
6717
6718 if (ret_val) {
6719 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to abort "
6720 "previous AEN command\n");
6721 return ret_val;
6722 }
6723 }
6724 }
6725
6726 cmd = megasas_get_cmd(instance);
6727
6728 if (!cmd)
6729 return -ENOMEM;
6730
6731 dcmd = &cmd->frame->dcmd;
6732
6733 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
6734
6735 /*
6736 * Prepare DCMD for aen registration
6737 */
6738 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6739
6740 dcmd->cmd = MFI_CMD_DCMD;
6741 dcmd->cmd_status = 0x0;
6742 dcmd->sge_count = 1;
6743 dcmd->flags = MFI_FRAME_DIR_READ;
6744 dcmd->timeout = 0;
6745 dcmd->pad_0 = 0;
6746 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail));
6747 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT);
6748 dcmd->mbox.w[0] = cpu_to_le32(seq_num);
6749 instance->last_seq_num = seq_num;
6750 dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word);
6751
6752 megasas_set_dma_settings(instance, dcmd, instance->evt_detail_h,
6753 sizeof(struct megasas_evt_detail));
6754
6755 if (instance->aen_cmd != NULL) {
6756 megasas_return_cmd(instance, cmd);
6757 return 0;
6758 }
6759
6760 /*
6761 * Store reference to the cmd used to register for AEN. When an
6762 * application wants us to register for AEN, we have to abort this
6763 * cmd and re-register with a new EVENT LOCALE supplied by that app
6764 */
6765 instance->aen_cmd = cmd;
6766
6767 /*
6768 * Issue the aen registration frame
6769 */
6770 instance->instancet->issue_dcmd(instance, cmd);
6771
6772 return 0;
6773 }
6774
6775 /* megasas_get_target_prop - Send DCMD with below details to firmware.
6776 *
6777 * This DCMD will fetch few properties of LD/system PD defined
6778 * in MR_TARGET_DEV_PROPERTIES. eg. Queue Depth, MDTS value.
6779 *
6780 * DCMD send by drivers whenever new target is added to the OS.
6781 *
6782 * dcmd.opcode - MR_DCMD_DEV_GET_TARGET_PROP
6783 * dcmd.mbox.b[0] - DCMD is to be fired for LD or system PD.
6784 * 0 = system PD, 1 = LD.
6785 * dcmd.mbox.s[1] - TargetID for LD/system PD.
6786 * dcmd.sge IN - Pointer to return MR_TARGET_DEV_PROPERTIES.
6787 *
6788 * @instance: Adapter soft state
6789 * @sdev: OS provided scsi device
6790 *
6791 * Returns 0 on success non-zero on failure.
6792 */
6793 int
megasas_get_target_prop(struct megasas_instance * instance,struct scsi_device * sdev)6794 megasas_get_target_prop(struct megasas_instance *instance,
6795 struct scsi_device *sdev)
6796 {
6797 int ret;
6798 struct megasas_cmd *cmd;
6799 struct megasas_dcmd_frame *dcmd;
6800 u16 targetId = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL) +
6801 sdev->id;
6802
6803 cmd = megasas_get_cmd(instance);
6804
6805 if (!cmd) {
6806 dev_err(&instance->pdev->dev,
6807 "Failed to get cmd %s\n", __func__);
6808 return -ENOMEM;
6809 }
6810
6811 dcmd = &cmd->frame->dcmd;
6812
6813 memset(instance->tgt_prop, 0, sizeof(*instance->tgt_prop));
6814 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6815 dcmd->mbox.b[0] = MEGASAS_IS_LOGICAL(sdev);
6816
6817 dcmd->mbox.s[1] = cpu_to_le16(targetId);
6818 dcmd->cmd = MFI_CMD_DCMD;
6819 dcmd->cmd_status = 0xFF;
6820 dcmd->sge_count = 1;
6821 dcmd->flags = MFI_FRAME_DIR_READ;
6822 dcmd->timeout = 0;
6823 dcmd->pad_0 = 0;
6824 dcmd->data_xfer_len =
6825 cpu_to_le32(sizeof(struct MR_TARGET_PROPERTIES));
6826 dcmd->opcode = cpu_to_le32(MR_DCMD_DRV_GET_TARGET_PROP);
6827
6828 megasas_set_dma_settings(instance, dcmd, instance->tgt_prop_h,
6829 sizeof(struct MR_TARGET_PROPERTIES));
6830
6831 if ((instance->adapter_type != MFI_SERIES) &&
6832 !instance->mask_interrupts)
6833 ret = megasas_issue_blocked_cmd(instance,
6834 cmd, MFI_IO_TIMEOUT_SECS);
6835 else
6836 ret = megasas_issue_polled(instance, cmd);
6837
6838 switch (ret) {
6839 case DCMD_TIMEOUT:
6840 switch (dcmd_timeout_ocr_possible(instance)) {
6841 case INITIATE_OCR:
6842 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
6843 mutex_unlock(&instance->reset_mutex);
6844 megasas_reset_fusion(instance->host,
6845 MFI_IO_TIMEOUT_OCR);
6846 mutex_lock(&instance->reset_mutex);
6847 break;
6848 case KILL_ADAPTER:
6849 megaraid_sas_kill_hba(instance);
6850 break;
6851 case IGNORE_TIMEOUT:
6852 dev_info(&instance->pdev->dev,
6853 "Ignore DCMD timeout: %s %d\n",
6854 __func__, __LINE__);
6855 break;
6856 }
6857 break;
6858
6859 default:
6860 megasas_return_cmd(instance, cmd);
6861 }
6862 if (ret != DCMD_SUCCESS)
6863 dev_err(&instance->pdev->dev,
6864 "return from %s %d return value %d\n",
6865 __func__, __LINE__, ret);
6866
6867 return ret;
6868 }
6869
6870 /**
6871 * megasas_start_aen - Subscribes to AEN during driver load time
6872 * @instance: Adapter soft state
6873 */
megasas_start_aen(struct megasas_instance * instance)6874 static int megasas_start_aen(struct megasas_instance *instance)
6875 {
6876 struct megasas_evt_log_info eli;
6877 union megasas_evt_class_locale class_locale;
6878
6879 /*
6880 * Get the latest sequence number from FW
6881 */
6882 memset(&eli, 0, sizeof(eli));
6883
6884 if (megasas_get_seq_num(instance, &eli))
6885 return -1;
6886
6887 /*
6888 * Register AEN with FW for latest sequence number plus 1
6889 */
6890 class_locale.members.reserved = 0;
6891 class_locale.members.locale = MR_EVT_LOCALE_ALL;
6892 class_locale.members.class = MR_EVT_CLASS_DEBUG;
6893
6894 return megasas_register_aen(instance,
6895 le32_to_cpu(eli.newest_seq_num) + 1,
6896 class_locale.word);
6897 }
6898
6899 /**
6900 * megasas_io_attach - Attaches this driver to SCSI mid-layer
6901 * @instance: Adapter soft state
6902 */
megasas_io_attach(struct megasas_instance * instance)6903 static int megasas_io_attach(struct megasas_instance *instance)
6904 {
6905 struct Scsi_Host *host = instance->host;
6906
6907 /*
6908 * Export parameters required by SCSI mid-layer
6909 */
6910 host->unique_id = instance->unique_id;
6911 host->can_queue = instance->max_scsi_cmds;
6912 host->this_id = instance->init_id;
6913 host->sg_tablesize = instance->max_num_sge;
6914
6915 if (instance->fw_support_ieee)
6916 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
6917
6918 /*
6919 * Check if the module parameter value for max_sectors can be used
6920 */
6921 if (max_sectors && max_sectors < instance->max_sectors_per_req)
6922 instance->max_sectors_per_req = max_sectors;
6923 else {
6924 if (max_sectors) {
6925 if (((instance->pdev->device ==
6926 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
6927 (instance->pdev->device ==
6928 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
6929 (max_sectors <= MEGASAS_MAX_SECTORS)) {
6930 instance->max_sectors_per_req = max_sectors;
6931 } else {
6932 dev_info(&instance->pdev->dev, "max_sectors should be > 0"
6933 "and <= %d (or < 1MB for GEN2 controller)\n",
6934 instance->max_sectors_per_req);
6935 }
6936 }
6937 }
6938
6939 host->max_sectors = instance->max_sectors_per_req;
6940 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
6941 host->max_channel = MEGASAS_MAX_CHANNELS - 1;
6942 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
6943 host->max_lun = MEGASAS_MAX_LUN;
6944 host->max_cmd_len = 16;
6945
6946 /* Use shared host tagset only for fusion adaptors
6947 * if there are managed interrupts (smp affinity enabled case).
6948 * Single msix_vectors in kdump, so shared host tag is also disabled.
6949 */
6950
6951 host->host_tagset = 0;
6952 host->nr_hw_queues = 1;
6953
6954 if ((instance->adapter_type != MFI_SERIES) &&
6955 (instance->msix_vectors > instance->low_latency_index_start) &&
6956 host_tagset_enable &&
6957 instance->smp_affinity_enable) {
6958 host->host_tagset = 1;
6959 host->nr_hw_queues = instance->msix_vectors -
6960 instance->low_latency_index_start + instance->iopoll_q_count;
6961 if (instance->iopoll_q_count)
6962 host->nr_maps = 3;
6963 } else {
6964 instance->iopoll_q_count = 0;
6965 }
6966
6967 dev_info(&instance->pdev->dev,
6968 "Max firmware commands: %d shared with default "
6969 "hw_queues = %d poll_queues %d\n", instance->max_fw_cmds,
6970 host->nr_hw_queues - instance->iopoll_q_count,
6971 instance->iopoll_q_count);
6972 /*
6973 * Notify the mid-layer about the new controller
6974 */
6975 if (scsi_add_host(host, &instance->pdev->dev)) {
6976 dev_err(&instance->pdev->dev,
6977 "Failed to add host from %s %d\n",
6978 __func__, __LINE__);
6979 return -ENODEV;
6980 }
6981
6982 return 0;
6983 }
6984
6985 /**
6986 * megasas_set_dma_mask - Set DMA mask for supported controllers
6987 *
6988 * @instance: Adapter soft state
6989 * Description:
6990 *
6991 * For Ventura, driver/FW will operate in 63bit DMA addresses.
6992 *
6993 * For invader-
6994 * By default, driver/FW will operate in 32bit DMA addresses
6995 * for consistent DMA mapping but if 32 bit consistent
6996 * DMA mask fails, driver will try with 63 bit consistent
6997 * mask provided FW is true 63bit DMA capable
6998 *
6999 * For older controllers(Thunderbolt and MFI based adapters)-
7000 * driver/FW will operate in 32 bit consistent DMA addresses.
7001 */
7002 static int
megasas_set_dma_mask(struct megasas_instance * instance)7003 megasas_set_dma_mask(struct megasas_instance *instance)
7004 {
7005 u64 consistent_mask;
7006 struct pci_dev *pdev;
7007 u32 scratch_pad_1;
7008
7009 pdev = instance->pdev;
7010 consistent_mask = (instance->adapter_type >= VENTURA_SERIES) ?
7011 DMA_BIT_MASK(63) : DMA_BIT_MASK(32);
7012
7013 if (IS_DMA64) {
7014 if (dma_set_mask(&pdev->dev, DMA_BIT_MASK(63)) &&
7015 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
7016 goto fail_set_dma_mask;
7017
7018 if ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) &&
7019 (dma_set_coherent_mask(&pdev->dev, consistent_mask) &&
7020 dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))) {
7021 /*
7022 * If 32 bit DMA mask fails, then try for 64 bit mask
7023 * for FW capable of handling 64 bit DMA.
7024 */
7025 scratch_pad_1 = megasas_readl
7026 (instance, &instance->reg_set->outbound_scratch_pad_1);
7027
7028 if (!(scratch_pad_1 & MR_CAN_HANDLE_64_BIT_DMA_OFFSET))
7029 goto fail_set_dma_mask;
7030 else if (dma_set_mask_and_coherent(&pdev->dev,
7031 DMA_BIT_MASK(63)))
7032 goto fail_set_dma_mask;
7033 }
7034 } else if (dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)))
7035 goto fail_set_dma_mask;
7036
7037 if (pdev->dev.coherent_dma_mask == DMA_BIT_MASK(32))
7038 instance->consistent_mask_64bit = false;
7039 else
7040 instance->consistent_mask_64bit = true;
7041
7042 dev_info(&pdev->dev, "%s bit DMA mask and %s bit consistent mask\n",
7043 ((*pdev->dev.dma_mask == DMA_BIT_MASK(63)) ? "63" : "32"),
7044 (instance->consistent_mask_64bit ? "63" : "32"));
7045
7046 return 0;
7047
7048 fail_set_dma_mask:
7049 dev_err(&pdev->dev, "Failed to set DMA mask\n");
7050 return -1;
7051
7052 }
7053
7054 /*
7055 * megasas_set_adapter_type - Set adapter type.
7056 * Supported controllers can be divided in
7057 * different categories-
7058 * enum MR_ADAPTER_TYPE {
7059 * MFI_SERIES = 1,
7060 * THUNDERBOLT_SERIES = 2,
7061 * INVADER_SERIES = 3,
7062 * VENTURA_SERIES = 4,
7063 * AERO_SERIES = 5,
7064 * };
7065 * @instance: Adapter soft state
7066 * return: void
7067 */
megasas_set_adapter_type(struct megasas_instance * instance)7068 static inline void megasas_set_adapter_type(struct megasas_instance *instance)
7069 {
7070 if ((instance->pdev->vendor == PCI_VENDOR_ID_DELL) &&
7071 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5)) {
7072 instance->adapter_type = MFI_SERIES;
7073 } else {
7074 switch (instance->pdev->device) {
7075 case PCI_DEVICE_ID_LSI_AERO_10E1:
7076 case PCI_DEVICE_ID_LSI_AERO_10E2:
7077 case PCI_DEVICE_ID_LSI_AERO_10E5:
7078 case PCI_DEVICE_ID_LSI_AERO_10E6:
7079 instance->adapter_type = AERO_SERIES;
7080 break;
7081 case PCI_DEVICE_ID_LSI_VENTURA:
7082 case PCI_DEVICE_ID_LSI_CRUSADER:
7083 case PCI_DEVICE_ID_LSI_HARPOON:
7084 case PCI_DEVICE_ID_LSI_TOMCAT:
7085 case PCI_DEVICE_ID_LSI_VENTURA_4PORT:
7086 case PCI_DEVICE_ID_LSI_CRUSADER_4PORT:
7087 instance->adapter_type = VENTURA_SERIES;
7088 break;
7089 case PCI_DEVICE_ID_LSI_FUSION:
7090 case PCI_DEVICE_ID_LSI_PLASMA:
7091 instance->adapter_type = THUNDERBOLT_SERIES;
7092 break;
7093 case PCI_DEVICE_ID_LSI_INVADER:
7094 case PCI_DEVICE_ID_LSI_INTRUDER:
7095 case PCI_DEVICE_ID_LSI_INTRUDER_24:
7096 case PCI_DEVICE_ID_LSI_CUTLASS_52:
7097 case PCI_DEVICE_ID_LSI_CUTLASS_53:
7098 case PCI_DEVICE_ID_LSI_FURY:
7099 instance->adapter_type = INVADER_SERIES;
7100 break;
7101 default: /* For all other supported controllers */
7102 instance->adapter_type = MFI_SERIES;
7103 break;
7104 }
7105 }
7106 }
7107
megasas_alloc_mfi_ctrl_mem(struct megasas_instance * instance)7108 static inline int megasas_alloc_mfi_ctrl_mem(struct megasas_instance *instance)
7109 {
7110 instance->producer = dma_alloc_coherent(&instance->pdev->dev,
7111 sizeof(u32), &instance->producer_h, GFP_KERNEL);
7112 instance->consumer = dma_alloc_coherent(&instance->pdev->dev,
7113 sizeof(u32), &instance->consumer_h, GFP_KERNEL);
7114
7115 if (!instance->producer || !instance->consumer) {
7116 dev_err(&instance->pdev->dev,
7117 "Failed to allocate memory for producer, consumer\n");
7118 return -1;
7119 }
7120
7121 *instance->producer = 0;
7122 *instance->consumer = 0;
7123 return 0;
7124 }
7125
7126 /**
7127 * megasas_alloc_ctrl_mem - Allocate per controller memory for core data
7128 * structures which are not common across MFI
7129 * adapters and fusion adapters.
7130 * For MFI based adapters, allocate producer and
7131 * consumer buffers. For fusion adapters, allocate
7132 * memory for fusion context.
7133 * @instance: Adapter soft state
7134 * return: 0 for SUCCESS
7135 */
megasas_alloc_ctrl_mem(struct megasas_instance * instance)7136 static int megasas_alloc_ctrl_mem(struct megasas_instance *instance)
7137 {
7138 instance->reply_map = kcalloc(nr_cpu_ids, sizeof(unsigned int),
7139 GFP_KERNEL);
7140 if (!instance->reply_map)
7141 return -ENOMEM;
7142
7143 switch (instance->adapter_type) {
7144 case MFI_SERIES:
7145 if (megasas_alloc_mfi_ctrl_mem(instance))
7146 return -ENOMEM;
7147 break;
7148 case AERO_SERIES:
7149 case VENTURA_SERIES:
7150 case THUNDERBOLT_SERIES:
7151 case INVADER_SERIES:
7152 if (megasas_alloc_fusion_context(instance))
7153 return -ENOMEM;
7154 break;
7155 }
7156
7157 return 0;
7158 }
7159
7160 /*
7161 * megasas_free_ctrl_mem - Free fusion context for fusion adapters and
7162 * producer, consumer buffers for MFI adapters
7163 *
7164 * @instance - Adapter soft instance
7165 *
7166 */
megasas_free_ctrl_mem(struct megasas_instance * instance)7167 static inline void megasas_free_ctrl_mem(struct megasas_instance *instance)
7168 {
7169 kfree(instance->reply_map);
7170 if (instance->adapter_type == MFI_SERIES) {
7171 if (instance->producer)
7172 dma_free_coherent(&instance->pdev->dev, sizeof(u32),
7173 instance->producer,
7174 instance->producer_h);
7175 if (instance->consumer)
7176 dma_free_coherent(&instance->pdev->dev, sizeof(u32),
7177 instance->consumer,
7178 instance->consumer_h);
7179 } else {
7180 megasas_free_fusion_context(instance);
7181 }
7182 }
7183
7184 /**
7185 * megasas_alloc_ctrl_dma_buffers - Allocate consistent DMA buffers during
7186 * driver load time
7187 *
7188 * @instance: Adapter soft instance
7189 *
7190 * @return: O for SUCCESS
7191 */
7192 static inline
megasas_alloc_ctrl_dma_buffers(struct megasas_instance * instance)7193 int megasas_alloc_ctrl_dma_buffers(struct megasas_instance *instance)
7194 {
7195 struct pci_dev *pdev = instance->pdev;
7196 struct fusion_context *fusion = instance->ctrl_context;
7197
7198 instance->evt_detail = dma_alloc_coherent(&pdev->dev,
7199 sizeof(struct megasas_evt_detail),
7200 &instance->evt_detail_h, GFP_KERNEL);
7201
7202 if (!instance->evt_detail) {
7203 dev_err(&instance->pdev->dev,
7204 "Failed to allocate event detail buffer\n");
7205 return -ENOMEM;
7206 }
7207
7208 if (fusion) {
7209 fusion->ioc_init_request =
7210 dma_alloc_coherent(&pdev->dev,
7211 sizeof(struct MPI2_IOC_INIT_REQUEST),
7212 &fusion->ioc_init_request_phys,
7213 GFP_KERNEL);
7214
7215 if (!fusion->ioc_init_request) {
7216 dev_err(&pdev->dev,
7217 "Failed to allocate ioc init request\n");
7218 return -ENOMEM;
7219 }
7220
7221 instance->snapdump_prop = dma_alloc_coherent(&pdev->dev,
7222 sizeof(struct MR_SNAPDUMP_PROPERTIES),
7223 &instance->snapdump_prop_h, GFP_KERNEL);
7224
7225 if (!instance->snapdump_prop)
7226 dev_err(&pdev->dev,
7227 "Failed to allocate snapdump properties buffer\n");
7228
7229 instance->host_device_list_buf = dma_alloc_coherent(&pdev->dev,
7230 HOST_DEVICE_LIST_SZ,
7231 &instance->host_device_list_buf_h,
7232 GFP_KERNEL);
7233
7234 if (!instance->host_device_list_buf) {
7235 dev_err(&pdev->dev,
7236 "Failed to allocate targetid list buffer\n");
7237 return -ENOMEM;
7238 }
7239
7240 }
7241
7242 instance->pd_list_buf =
7243 dma_alloc_coherent(&pdev->dev,
7244 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
7245 &instance->pd_list_buf_h, GFP_KERNEL);
7246
7247 if (!instance->pd_list_buf) {
7248 dev_err(&pdev->dev, "Failed to allocate PD list buffer\n");
7249 return -ENOMEM;
7250 }
7251
7252 instance->ctrl_info_buf =
7253 dma_alloc_coherent(&pdev->dev,
7254 sizeof(struct megasas_ctrl_info),
7255 &instance->ctrl_info_buf_h, GFP_KERNEL);
7256
7257 if (!instance->ctrl_info_buf) {
7258 dev_err(&pdev->dev,
7259 "Failed to allocate controller info buffer\n");
7260 return -ENOMEM;
7261 }
7262
7263 instance->ld_list_buf =
7264 dma_alloc_coherent(&pdev->dev,
7265 sizeof(struct MR_LD_LIST),
7266 &instance->ld_list_buf_h, GFP_KERNEL);
7267
7268 if (!instance->ld_list_buf) {
7269 dev_err(&pdev->dev, "Failed to allocate LD list buffer\n");
7270 return -ENOMEM;
7271 }
7272
7273 instance->ld_targetid_list_buf =
7274 dma_alloc_coherent(&pdev->dev,
7275 sizeof(struct MR_LD_TARGETID_LIST),
7276 &instance->ld_targetid_list_buf_h, GFP_KERNEL);
7277
7278 if (!instance->ld_targetid_list_buf) {
7279 dev_err(&pdev->dev,
7280 "Failed to allocate LD targetid list buffer\n");
7281 return -ENOMEM;
7282 }
7283
7284 if (!reset_devices) {
7285 instance->system_info_buf =
7286 dma_alloc_coherent(&pdev->dev,
7287 sizeof(struct MR_DRV_SYSTEM_INFO),
7288 &instance->system_info_h, GFP_KERNEL);
7289 instance->pd_info =
7290 dma_alloc_coherent(&pdev->dev,
7291 sizeof(struct MR_PD_INFO),
7292 &instance->pd_info_h, GFP_KERNEL);
7293 instance->tgt_prop =
7294 dma_alloc_coherent(&pdev->dev,
7295 sizeof(struct MR_TARGET_PROPERTIES),
7296 &instance->tgt_prop_h, GFP_KERNEL);
7297 instance->crash_dump_buf =
7298 dma_alloc_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE,
7299 &instance->crash_dump_h, GFP_KERNEL);
7300
7301 if (!instance->system_info_buf)
7302 dev_err(&instance->pdev->dev,
7303 "Failed to allocate system info buffer\n");
7304
7305 if (!instance->pd_info)
7306 dev_err(&instance->pdev->dev,
7307 "Failed to allocate pd_info buffer\n");
7308
7309 if (!instance->tgt_prop)
7310 dev_err(&instance->pdev->dev,
7311 "Failed to allocate tgt_prop buffer\n");
7312
7313 if (!instance->crash_dump_buf)
7314 dev_err(&instance->pdev->dev,
7315 "Failed to allocate crash dump buffer\n");
7316 }
7317
7318 return 0;
7319 }
7320
7321 /*
7322 * megasas_free_ctrl_dma_buffers - Free consistent DMA buffers allocated
7323 * during driver load time
7324 *
7325 * @instance- Adapter soft instance
7326 *
7327 */
7328 static inline
megasas_free_ctrl_dma_buffers(struct megasas_instance * instance)7329 void megasas_free_ctrl_dma_buffers(struct megasas_instance *instance)
7330 {
7331 struct pci_dev *pdev = instance->pdev;
7332 struct fusion_context *fusion = instance->ctrl_context;
7333
7334 if (instance->evt_detail)
7335 dma_free_coherent(&pdev->dev, sizeof(struct megasas_evt_detail),
7336 instance->evt_detail,
7337 instance->evt_detail_h);
7338
7339 if (fusion && fusion->ioc_init_request)
7340 dma_free_coherent(&pdev->dev,
7341 sizeof(struct MPI2_IOC_INIT_REQUEST),
7342 fusion->ioc_init_request,
7343 fusion->ioc_init_request_phys);
7344
7345 if (instance->pd_list_buf)
7346 dma_free_coherent(&pdev->dev,
7347 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
7348 instance->pd_list_buf,
7349 instance->pd_list_buf_h);
7350
7351 if (instance->ld_list_buf)
7352 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_LIST),
7353 instance->ld_list_buf,
7354 instance->ld_list_buf_h);
7355
7356 if (instance->ld_targetid_list_buf)
7357 dma_free_coherent(&pdev->dev, sizeof(struct MR_LD_TARGETID_LIST),
7358 instance->ld_targetid_list_buf,
7359 instance->ld_targetid_list_buf_h);
7360
7361 if (instance->ctrl_info_buf)
7362 dma_free_coherent(&pdev->dev, sizeof(struct megasas_ctrl_info),
7363 instance->ctrl_info_buf,
7364 instance->ctrl_info_buf_h);
7365
7366 if (instance->system_info_buf)
7367 dma_free_coherent(&pdev->dev, sizeof(struct MR_DRV_SYSTEM_INFO),
7368 instance->system_info_buf,
7369 instance->system_info_h);
7370
7371 if (instance->pd_info)
7372 dma_free_coherent(&pdev->dev, sizeof(struct MR_PD_INFO),
7373 instance->pd_info, instance->pd_info_h);
7374
7375 if (instance->tgt_prop)
7376 dma_free_coherent(&pdev->dev, sizeof(struct MR_TARGET_PROPERTIES),
7377 instance->tgt_prop, instance->tgt_prop_h);
7378
7379 if (instance->crash_dump_buf)
7380 dma_free_coherent(&pdev->dev, CRASH_DMA_BUF_SIZE,
7381 instance->crash_dump_buf,
7382 instance->crash_dump_h);
7383
7384 if (instance->snapdump_prop)
7385 dma_free_coherent(&pdev->dev,
7386 sizeof(struct MR_SNAPDUMP_PROPERTIES),
7387 instance->snapdump_prop,
7388 instance->snapdump_prop_h);
7389
7390 if (instance->host_device_list_buf)
7391 dma_free_coherent(&pdev->dev,
7392 HOST_DEVICE_LIST_SZ,
7393 instance->host_device_list_buf,
7394 instance->host_device_list_buf_h);
7395
7396 }
7397
7398 /*
7399 * megasas_init_ctrl_params - Initialize controller's instance
7400 * parameters before FW init
7401 * @instance - Adapter soft instance
7402 * @return - void
7403 */
megasas_init_ctrl_params(struct megasas_instance * instance)7404 static inline void megasas_init_ctrl_params(struct megasas_instance *instance)
7405 {
7406 instance->fw_crash_state = UNAVAILABLE;
7407
7408 megasas_poll_wait_aen = 0;
7409 instance->issuepend_done = 1;
7410 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
7411
7412 /*
7413 * Initialize locks and queues
7414 */
7415 INIT_LIST_HEAD(&instance->cmd_pool);
7416 INIT_LIST_HEAD(&instance->internal_reset_pending_q);
7417
7418 atomic_set(&instance->fw_outstanding, 0);
7419 atomic64_set(&instance->total_io_count, 0);
7420
7421 init_waitqueue_head(&instance->int_cmd_wait_q);
7422 init_waitqueue_head(&instance->abort_cmd_wait_q);
7423
7424 mutex_init(&instance->crashdump_lock);
7425 spin_lock_init(&instance->mfi_pool_lock);
7426 spin_lock_init(&instance->hba_lock);
7427 spin_lock_init(&instance->stream_lock);
7428 spin_lock_init(&instance->completion_lock);
7429
7430 mutex_init(&instance->reset_mutex);
7431
7432 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
7433 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY))
7434 instance->flag_ieee = 1;
7435
7436 instance->flag = 0;
7437 instance->unload = 1;
7438 instance->last_time = 0;
7439 instance->disableOnlineCtrlReset = 1;
7440 instance->UnevenSpanSupport = 0;
7441 instance->smp_affinity_enable = smp_affinity_enable ? true : false;
7442 instance->msix_load_balance = false;
7443
7444 if (instance->adapter_type != MFI_SERIES)
7445 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
7446 else
7447 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
7448 }
7449
7450 /**
7451 * megasas_probe_one - PCI hotplug entry point
7452 * @pdev: PCI device structure
7453 * @id: PCI ids of supported hotplugged adapter
7454 */
megasas_probe_one(struct pci_dev * pdev,const struct pci_device_id * id)7455 static int megasas_probe_one(struct pci_dev *pdev,
7456 const struct pci_device_id *id)
7457 {
7458 int rval, pos;
7459 struct Scsi_Host *host;
7460 struct megasas_instance *instance;
7461 u16 control = 0;
7462
7463 switch (pdev->device) {
7464 case PCI_DEVICE_ID_LSI_AERO_10E0:
7465 case PCI_DEVICE_ID_LSI_AERO_10E3:
7466 case PCI_DEVICE_ID_LSI_AERO_10E4:
7467 case PCI_DEVICE_ID_LSI_AERO_10E7:
7468 dev_err(&pdev->dev, "Adapter is in non secure mode\n");
7469 return 1;
7470 case PCI_DEVICE_ID_LSI_AERO_10E1:
7471 case PCI_DEVICE_ID_LSI_AERO_10E5:
7472 dev_info(&pdev->dev, "Adapter is in configurable secure mode\n");
7473 break;
7474 }
7475
7476 /* Reset MSI-X in the kdump kernel */
7477 if (reset_devices) {
7478 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
7479 if (pos) {
7480 pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS,
7481 &control);
7482 if (control & PCI_MSIX_FLAGS_ENABLE) {
7483 dev_info(&pdev->dev, "resetting MSI-X\n");
7484 pci_write_config_word(pdev,
7485 pos + PCI_MSIX_FLAGS,
7486 control &
7487 ~PCI_MSIX_FLAGS_ENABLE);
7488 }
7489 }
7490 }
7491
7492 /*
7493 * PCI prepping: enable device set bus mastering and dma mask
7494 */
7495 rval = pci_enable_device_mem(pdev);
7496
7497 if (rval) {
7498 return rval;
7499 }
7500
7501 pci_set_master(pdev);
7502
7503 host = scsi_host_alloc(&megasas_template,
7504 sizeof(struct megasas_instance));
7505
7506 if (!host) {
7507 dev_printk(KERN_DEBUG, &pdev->dev, "scsi_host_alloc failed\n");
7508 goto fail_alloc_instance;
7509 }
7510
7511 instance = (struct megasas_instance *)host->hostdata;
7512 memset(instance, 0, sizeof(*instance));
7513 atomic_set(&instance->fw_reset_no_pci_access, 0);
7514
7515 /*
7516 * Initialize PCI related and misc parameters
7517 */
7518 instance->pdev = pdev;
7519 instance->host = host;
7520 instance->unique_id = pci_dev_id(pdev);
7521 instance->init_id = MEGASAS_DEFAULT_INIT_ID;
7522
7523 megasas_set_adapter_type(instance);
7524
7525 /*
7526 * Initialize MFI Firmware
7527 */
7528 if (megasas_init_fw(instance))
7529 goto fail_init_mfi;
7530
7531 if (instance->requestorId) {
7532 if (instance->PlasmaFW111) {
7533 instance->vf_affiliation_111 =
7534 dma_alloc_coherent(&pdev->dev,
7535 sizeof(struct MR_LD_VF_AFFILIATION_111),
7536 &instance->vf_affiliation_111_h,
7537 GFP_KERNEL);
7538 if (!instance->vf_affiliation_111)
7539 dev_warn(&pdev->dev, "Can't allocate "
7540 "memory for VF affiliation buffer\n");
7541 } else {
7542 instance->vf_affiliation =
7543 dma_alloc_coherent(&pdev->dev,
7544 (MAX_LOGICAL_DRIVES + 1) *
7545 sizeof(struct MR_LD_VF_AFFILIATION),
7546 &instance->vf_affiliation_h,
7547 GFP_KERNEL);
7548 if (!instance->vf_affiliation)
7549 dev_warn(&pdev->dev, "Can't allocate "
7550 "memory for VF affiliation buffer\n");
7551 }
7552 }
7553
7554 /*
7555 * Store instance in PCI softstate
7556 */
7557 pci_set_drvdata(pdev, instance);
7558
7559 /*
7560 * Add this controller to megasas_mgmt_info structure so that it
7561 * can be exported to management applications
7562 */
7563 megasas_mgmt_info.count++;
7564 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
7565 megasas_mgmt_info.max_index++;
7566
7567 /*
7568 * Register with SCSI mid-layer
7569 */
7570 if (megasas_io_attach(instance))
7571 goto fail_io_attach;
7572
7573 instance->unload = 0;
7574 /*
7575 * Trigger SCSI to scan our drives
7576 */
7577 if (!instance->enable_fw_dev_list ||
7578 (instance->host_device_list_buf->count > 0))
7579 scsi_scan_host(host);
7580
7581 /*
7582 * Initiate AEN (Asynchronous Event Notification)
7583 */
7584 if (megasas_start_aen(instance)) {
7585 dev_printk(KERN_DEBUG, &pdev->dev, "start aen failed\n");
7586 goto fail_start_aen;
7587 }
7588
7589 megasas_setup_debugfs(instance);
7590
7591 /* Get current SR-IOV LD/VF affiliation */
7592 if (instance->requestorId)
7593 megasas_get_ld_vf_affiliation(instance, 1);
7594
7595 return 0;
7596
7597 fail_start_aen:
7598 instance->unload = 1;
7599 scsi_remove_host(instance->host);
7600 fail_io_attach:
7601 megasas_mgmt_info.count--;
7602 megasas_mgmt_info.max_index--;
7603 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
7604
7605 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7606 del_timer_sync(&instance->sriov_heartbeat_timer);
7607
7608 instance->instancet->disable_intr(instance);
7609 megasas_destroy_irqs(instance);
7610
7611 if (instance->adapter_type != MFI_SERIES)
7612 megasas_release_fusion(instance);
7613 else
7614 megasas_release_mfi(instance);
7615
7616 if (instance->msix_vectors)
7617 pci_free_irq_vectors(instance->pdev);
7618 instance->msix_vectors = 0;
7619
7620 if (instance->fw_crash_state != UNAVAILABLE)
7621 megasas_free_host_crash_buffer(instance);
7622
7623 if (instance->adapter_type != MFI_SERIES)
7624 megasas_fusion_stop_watchdog(instance);
7625 fail_init_mfi:
7626 scsi_host_put(host);
7627 fail_alloc_instance:
7628 pci_disable_device(pdev);
7629
7630 return -ENODEV;
7631 }
7632
7633 /**
7634 * megasas_flush_cache - Requests FW to flush all its caches
7635 * @instance: Adapter soft state
7636 */
megasas_flush_cache(struct megasas_instance * instance)7637 static void megasas_flush_cache(struct megasas_instance *instance)
7638 {
7639 struct megasas_cmd *cmd;
7640 struct megasas_dcmd_frame *dcmd;
7641
7642 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
7643 return;
7644
7645 cmd = megasas_get_cmd(instance);
7646
7647 if (!cmd)
7648 return;
7649
7650 dcmd = &cmd->frame->dcmd;
7651
7652 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
7653
7654 dcmd->cmd = MFI_CMD_DCMD;
7655 dcmd->cmd_status = 0x0;
7656 dcmd->sge_count = 0;
7657 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
7658 dcmd->timeout = 0;
7659 dcmd->pad_0 = 0;
7660 dcmd->data_xfer_len = 0;
7661 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH);
7662 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
7663
7664 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
7665 != DCMD_SUCCESS) {
7666 dev_err(&instance->pdev->dev,
7667 "return from %s %d\n", __func__, __LINE__);
7668 return;
7669 }
7670
7671 megasas_return_cmd(instance, cmd);
7672 }
7673
7674 /**
7675 * megasas_shutdown_controller - Instructs FW to shutdown the controller
7676 * @instance: Adapter soft state
7677 * @opcode: Shutdown/Hibernate
7678 */
megasas_shutdown_controller(struct megasas_instance * instance,u32 opcode)7679 static void megasas_shutdown_controller(struct megasas_instance *instance,
7680 u32 opcode)
7681 {
7682 struct megasas_cmd *cmd;
7683 struct megasas_dcmd_frame *dcmd;
7684
7685 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
7686 return;
7687
7688 cmd = megasas_get_cmd(instance);
7689
7690 if (!cmd)
7691 return;
7692
7693 if (instance->aen_cmd)
7694 megasas_issue_blocked_abort_cmd(instance,
7695 instance->aen_cmd, MFI_IO_TIMEOUT_SECS);
7696 if (instance->map_update_cmd)
7697 megasas_issue_blocked_abort_cmd(instance,
7698 instance->map_update_cmd, MFI_IO_TIMEOUT_SECS);
7699 if (instance->jbod_seq_cmd)
7700 megasas_issue_blocked_abort_cmd(instance,
7701 instance->jbod_seq_cmd, MFI_IO_TIMEOUT_SECS);
7702
7703 dcmd = &cmd->frame->dcmd;
7704
7705 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
7706
7707 dcmd->cmd = MFI_CMD_DCMD;
7708 dcmd->cmd_status = 0x0;
7709 dcmd->sge_count = 0;
7710 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
7711 dcmd->timeout = 0;
7712 dcmd->pad_0 = 0;
7713 dcmd->data_xfer_len = 0;
7714 dcmd->opcode = cpu_to_le32(opcode);
7715
7716 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
7717 != DCMD_SUCCESS) {
7718 dev_err(&instance->pdev->dev,
7719 "return from %s %d\n", __func__, __LINE__);
7720 return;
7721 }
7722
7723 megasas_return_cmd(instance, cmd);
7724 }
7725
7726 /**
7727 * megasas_suspend - driver suspend entry point
7728 * @dev: Device structure
7729 */
7730 static int __maybe_unused
megasas_suspend(struct device * dev)7731 megasas_suspend(struct device *dev)
7732 {
7733 struct megasas_instance *instance;
7734
7735 instance = dev_get_drvdata(dev);
7736
7737 if (!instance)
7738 return 0;
7739
7740 instance->unload = 1;
7741
7742 dev_info(dev, "%s is called\n", __func__);
7743
7744 /* Shutdown SR-IOV heartbeat timer */
7745 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7746 del_timer_sync(&instance->sriov_heartbeat_timer);
7747
7748 /* Stop the FW fault detection watchdog */
7749 if (instance->adapter_type != MFI_SERIES)
7750 megasas_fusion_stop_watchdog(instance);
7751
7752 megasas_flush_cache(instance);
7753 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
7754
7755 /* cancel the delayed work if this work still in queue */
7756 if (instance->ev != NULL) {
7757 struct megasas_aen_event *ev = instance->ev;
7758 cancel_delayed_work_sync(&ev->hotplug_work);
7759 instance->ev = NULL;
7760 }
7761
7762 tasklet_kill(&instance->isr_tasklet);
7763
7764 pci_set_drvdata(instance->pdev, instance);
7765 instance->instancet->disable_intr(instance);
7766
7767 megasas_destroy_irqs(instance);
7768
7769 if (instance->msix_vectors)
7770 pci_free_irq_vectors(instance->pdev);
7771
7772 return 0;
7773 }
7774
7775 /**
7776 * megasas_resume- driver resume entry point
7777 * @dev: Device structure
7778 */
7779 static int __maybe_unused
megasas_resume(struct device * dev)7780 megasas_resume(struct device *dev)
7781 {
7782 int rval;
7783 struct Scsi_Host *host;
7784 struct megasas_instance *instance;
7785 u32 status_reg;
7786
7787 instance = dev_get_drvdata(dev);
7788
7789 if (!instance)
7790 return 0;
7791
7792 host = instance->host;
7793
7794 dev_info(dev, "%s is called\n", __func__);
7795
7796 /*
7797 * We expect the FW state to be READY
7798 */
7799
7800 if (megasas_transition_to_ready(instance, 0)) {
7801 dev_info(&instance->pdev->dev,
7802 "Failed to transition controller to ready from %s!\n",
7803 __func__);
7804 if (instance->adapter_type != MFI_SERIES) {
7805 status_reg =
7806 instance->instancet->read_fw_status_reg(instance);
7807 if (!(status_reg & MFI_RESET_ADAPTER) ||
7808 ((megasas_adp_reset_wait_for_ready
7809 (instance, true, 0)) == FAILED))
7810 goto fail_ready_state;
7811 } else {
7812 atomic_set(&instance->fw_reset_no_pci_access, 1);
7813 instance->instancet->adp_reset
7814 (instance, instance->reg_set);
7815 atomic_set(&instance->fw_reset_no_pci_access, 0);
7816
7817 /* waiting for about 30 seconds before retry */
7818 ssleep(30);
7819
7820 if (megasas_transition_to_ready(instance, 0))
7821 goto fail_ready_state;
7822 }
7823
7824 dev_info(&instance->pdev->dev,
7825 "FW restarted successfully from %s!\n",
7826 __func__);
7827 }
7828 if (megasas_set_dma_mask(instance))
7829 goto fail_set_dma_mask;
7830
7831 /*
7832 * Initialize MFI Firmware
7833 */
7834
7835 atomic_set(&instance->fw_outstanding, 0);
7836 atomic_set(&instance->ldio_outstanding, 0);
7837
7838 /* Now re-enable MSI-X */
7839 if (instance->msix_vectors)
7840 megasas_alloc_irq_vectors(instance);
7841
7842 if (!instance->msix_vectors) {
7843 rval = pci_alloc_irq_vectors(instance->pdev, 1, 1,
7844 PCI_IRQ_INTX);
7845 if (rval < 0)
7846 goto fail_reenable_msix;
7847 }
7848
7849 megasas_setup_reply_map(instance);
7850
7851 if (instance->adapter_type != MFI_SERIES) {
7852 megasas_reset_reply_desc(instance);
7853 if (megasas_ioc_init_fusion(instance)) {
7854 megasas_free_cmds(instance);
7855 megasas_free_cmds_fusion(instance);
7856 goto fail_init_mfi;
7857 }
7858 if (!megasas_get_map_info(instance))
7859 megasas_sync_map_info(instance);
7860 } else {
7861 *instance->producer = 0;
7862 *instance->consumer = 0;
7863 if (megasas_issue_init_mfi(instance))
7864 goto fail_init_mfi;
7865 }
7866
7867 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS)
7868 goto fail_init_mfi;
7869
7870 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
7871 (unsigned long)instance);
7872
7873 if (instance->msix_vectors ?
7874 megasas_setup_irqs_msix(instance, 0) :
7875 megasas_setup_irqs_ioapic(instance))
7876 goto fail_init_mfi;
7877
7878 if (instance->adapter_type != MFI_SERIES)
7879 megasas_setup_irq_poll(instance);
7880
7881 /* Re-launch SR-IOV heartbeat timer */
7882 if (instance->requestorId) {
7883 if (!megasas_sriov_start_heartbeat(instance, 0))
7884 megasas_start_timer(instance);
7885 else {
7886 instance->skip_heartbeat_timer_del = 1;
7887 goto fail_init_mfi;
7888 }
7889 }
7890
7891 instance->instancet->enable_intr(instance);
7892 megasas_setup_jbod_map(instance);
7893 instance->unload = 0;
7894
7895 /*
7896 * Initiate AEN (Asynchronous Event Notification)
7897 */
7898 if (megasas_start_aen(instance))
7899 dev_err(&instance->pdev->dev, "Start AEN failed\n");
7900
7901 /* Re-launch FW fault watchdog */
7902 if (instance->adapter_type != MFI_SERIES)
7903 if (megasas_fusion_start_watchdog(instance) != SUCCESS)
7904 goto fail_start_watchdog;
7905
7906 return 0;
7907
7908 fail_start_watchdog:
7909 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7910 del_timer_sync(&instance->sriov_heartbeat_timer);
7911 fail_init_mfi:
7912 megasas_free_ctrl_dma_buffers(instance);
7913 megasas_free_ctrl_mem(instance);
7914 scsi_host_put(host);
7915
7916 fail_reenable_msix:
7917 fail_set_dma_mask:
7918 fail_ready_state:
7919
7920 return -ENODEV;
7921 }
7922
7923 static inline int
megasas_wait_for_adapter_operational(struct megasas_instance * instance)7924 megasas_wait_for_adapter_operational(struct megasas_instance *instance)
7925 {
7926 int wait_time = MEGASAS_RESET_WAIT_TIME * 2;
7927 int i;
7928 u8 adp_state;
7929
7930 for (i = 0; i < wait_time; i++) {
7931 adp_state = atomic_read(&instance->adprecovery);
7932 if ((adp_state == MEGASAS_HBA_OPERATIONAL) ||
7933 (adp_state == MEGASAS_HW_CRITICAL_ERROR))
7934 break;
7935
7936 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL))
7937 dev_notice(&instance->pdev->dev, "waiting for controller reset to finish\n");
7938
7939 msleep(1000);
7940 }
7941
7942 if (adp_state != MEGASAS_HBA_OPERATIONAL) {
7943 dev_info(&instance->pdev->dev,
7944 "%s HBA failed to become operational, adp_state %d\n",
7945 __func__, adp_state);
7946 return 1;
7947 }
7948
7949 return 0;
7950 }
7951
7952 /**
7953 * megasas_detach_one - PCI hot"un"plug entry point
7954 * @pdev: PCI device structure
7955 */
megasas_detach_one(struct pci_dev * pdev)7956 static void megasas_detach_one(struct pci_dev *pdev)
7957 {
7958 int i;
7959 struct Scsi_Host *host;
7960 struct megasas_instance *instance;
7961 struct fusion_context *fusion;
7962 size_t pd_seq_map_sz;
7963
7964 instance = pci_get_drvdata(pdev);
7965
7966 if (!instance)
7967 return;
7968
7969 host = instance->host;
7970 fusion = instance->ctrl_context;
7971
7972 /* Shutdown SR-IOV heartbeat timer */
7973 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
7974 del_timer_sync(&instance->sriov_heartbeat_timer);
7975
7976 /* Stop the FW fault detection watchdog */
7977 if (instance->adapter_type != MFI_SERIES)
7978 megasas_fusion_stop_watchdog(instance);
7979
7980 if (instance->fw_crash_state != UNAVAILABLE)
7981 megasas_free_host_crash_buffer(instance);
7982 scsi_remove_host(instance->host);
7983 instance->unload = 1;
7984
7985 if (megasas_wait_for_adapter_operational(instance))
7986 goto skip_firing_dcmds;
7987
7988 megasas_flush_cache(instance);
7989 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
7990
7991 skip_firing_dcmds:
7992 /* cancel the delayed work if this work still in queue*/
7993 if (instance->ev != NULL) {
7994 struct megasas_aen_event *ev = instance->ev;
7995 cancel_delayed_work_sync(&ev->hotplug_work);
7996 instance->ev = NULL;
7997 }
7998
7999 /* cancel all wait events */
8000 wake_up_all(&instance->int_cmd_wait_q);
8001
8002 tasklet_kill(&instance->isr_tasklet);
8003
8004 /*
8005 * Take the instance off the instance array. Note that we will not
8006 * decrement the max_index. We let this array be sparse array
8007 */
8008 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
8009 if (megasas_mgmt_info.instance[i] == instance) {
8010 megasas_mgmt_info.count--;
8011 megasas_mgmt_info.instance[i] = NULL;
8012
8013 break;
8014 }
8015 }
8016
8017 instance->instancet->disable_intr(instance);
8018
8019 megasas_destroy_irqs(instance);
8020
8021 if (instance->msix_vectors)
8022 pci_free_irq_vectors(instance->pdev);
8023
8024 if (instance->adapter_type >= VENTURA_SERIES) {
8025 for (i = 0; i < MAX_LOGICAL_DRIVES_EXT; ++i)
8026 kfree(fusion->stream_detect_by_ld[i]);
8027 kfree(fusion->stream_detect_by_ld);
8028 fusion->stream_detect_by_ld = NULL;
8029 }
8030
8031
8032 if (instance->adapter_type != MFI_SERIES) {
8033 megasas_release_fusion(instance);
8034 pd_seq_map_sz =
8035 struct_size_t(struct MR_PD_CFG_SEQ_NUM_SYNC,
8036 seq, MAX_PHYSICAL_DEVICES);
8037 for (i = 0; i < 2 ; i++) {
8038 if (fusion->ld_map[i])
8039 dma_free_coherent(&instance->pdev->dev,
8040 fusion->max_map_sz,
8041 fusion->ld_map[i],
8042 fusion->ld_map_phys[i]);
8043 if (fusion->ld_drv_map[i]) {
8044 if (is_vmalloc_addr(fusion->ld_drv_map[i]))
8045 vfree(fusion->ld_drv_map[i]);
8046 else
8047 free_pages((ulong)fusion->ld_drv_map[i],
8048 fusion->drv_map_pages);
8049 }
8050
8051 if (fusion->pd_seq_sync[i])
8052 dma_free_coherent(&instance->pdev->dev,
8053 pd_seq_map_sz,
8054 fusion->pd_seq_sync[i],
8055 fusion->pd_seq_phys[i]);
8056 }
8057 } else {
8058 megasas_release_mfi(instance);
8059 }
8060
8061 if (instance->vf_affiliation)
8062 dma_free_coherent(&pdev->dev, (MAX_LOGICAL_DRIVES + 1) *
8063 sizeof(struct MR_LD_VF_AFFILIATION),
8064 instance->vf_affiliation,
8065 instance->vf_affiliation_h);
8066
8067 if (instance->vf_affiliation_111)
8068 dma_free_coherent(&pdev->dev,
8069 sizeof(struct MR_LD_VF_AFFILIATION_111),
8070 instance->vf_affiliation_111,
8071 instance->vf_affiliation_111_h);
8072
8073 if (instance->hb_host_mem)
8074 dma_free_coherent(&pdev->dev, sizeof(struct MR_CTRL_HB_HOST_MEM),
8075 instance->hb_host_mem,
8076 instance->hb_host_mem_h);
8077
8078 megasas_free_ctrl_dma_buffers(instance);
8079
8080 megasas_free_ctrl_mem(instance);
8081
8082 megasas_destroy_debugfs(instance);
8083
8084 scsi_host_put(host);
8085
8086 pci_disable_device(pdev);
8087 }
8088
8089 /**
8090 * megasas_shutdown - Shutdown entry point
8091 * @pdev: PCI device structure
8092 */
megasas_shutdown(struct pci_dev * pdev)8093 static void megasas_shutdown(struct pci_dev *pdev)
8094 {
8095 struct megasas_instance *instance = pci_get_drvdata(pdev);
8096
8097 if (!instance)
8098 return;
8099
8100 instance->unload = 1;
8101
8102 if (megasas_wait_for_adapter_operational(instance))
8103 goto skip_firing_dcmds;
8104
8105 megasas_flush_cache(instance);
8106 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
8107
8108 skip_firing_dcmds:
8109 instance->instancet->disable_intr(instance);
8110 megasas_destroy_irqs(instance);
8111
8112 if (instance->msix_vectors)
8113 pci_free_irq_vectors(instance->pdev);
8114 }
8115
8116 /*
8117 * megasas_mgmt_open - char node "open" entry point
8118 * @inode: char node inode
8119 * @filep: char node file
8120 */
megasas_mgmt_open(struct inode * inode,struct file * filep)8121 static int megasas_mgmt_open(struct inode *inode, struct file *filep)
8122 {
8123 /*
8124 * Allow only those users with admin rights
8125 */
8126 if (!capable(CAP_SYS_ADMIN))
8127 return -EACCES;
8128
8129 return 0;
8130 }
8131
8132 /*
8133 * megasas_mgmt_fasync - Async notifier registration from applications
8134 * @fd: char node file descriptor number
8135 * @filep: char node file
8136 * @mode: notifier on/off
8137 *
8138 * This function adds the calling process to a driver global queue. When an
8139 * event occurs, SIGIO will be sent to all processes in this queue.
8140 */
megasas_mgmt_fasync(int fd,struct file * filep,int mode)8141 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
8142 {
8143 int rc;
8144
8145 mutex_lock(&megasas_async_queue_mutex);
8146
8147 rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
8148
8149 mutex_unlock(&megasas_async_queue_mutex);
8150
8151 if (rc >= 0) {
8152 /* For sanity check when we get ioctl */
8153 filep->private_data = filep;
8154 return 0;
8155 }
8156
8157 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
8158
8159 return rc;
8160 }
8161
8162 /*
8163 * megasas_mgmt_poll - char node "poll" entry point
8164 * @filep: char node file
8165 * @wait: Events to poll for
8166 */
megasas_mgmt_poll(struct file * file,poll_table * wait)8167 static __poll_t megasas_mgmt_poll(struct file *file, poll_table *wait)
8168 {
8169 __poll_t mask;
8170 unsigned long flags;
8171
8172 poll_wait(file, &megasas_poll_wait, wait);
8173 spin_lock_irqsave(&poll_aen_lock, flags);
8174 if (megasas_poll_wait_aen)
8175 mask = (EPOLLIN | EPOLLRDNORM);
8176 else
8177 mask = 0;
8178 megasas_poll_wait_aen = 0;
8179 spin_unlock_irqrestore(&poll_aen_lock, flags);
8180 return mask;
8181 }
8182
8183 /*
8184 * megasas_set_crash_dump_params_ioctl:
8185 * Send CRASH_DUMP_MODE DCMD to all controllers
8186 * @cmd: MFI command frame
8187 */
8188
megasas_set_crash_dump_params_ioctl(struct megasas_cmd * cmd)8189 static int megasas_set_crash_dump_params_ioctl(struct megasas_cmd *cmd)
8190 {
8191 struct megasas_instance *local_instance;
8192 int i, error = 0;
8193 int crash_support;
8194
8195 crash_support = cmd->frame->dcmd.mbox.w[0];
8196
8197 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
8198 local_instance = megasas_mgmt_info.instance[i];
8199 if (local_instance && local_instance->crash_dump_drv_support) {
8200 if ((atomic_read(&local_instance->adprecovery) ==
8201 MEGASAS_HBA_OPERATIONAL) &&
8202 !megasas_set_crash_dump_params(local_instance,
8203 crash_support)) {
8204 local_instance->crash_dump_app_support =
8205 crash_support;
8206 dev_info(&local_instance->pdev->dev,
8207 "Application firmware crash "
8208 "dump mode set success\n");
8209 error = 0;
8210 } else {
8211 dev_info(&local_instance->pdev->dev,
8212 "Application firmware crash "
8213 "dump mode set failed\n");
8214 error = -1;
8215 }
8216 }
8217 }
8218 return error;
8219 }
8220
8221 /**
8222 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW
8223 * @instance: Adapter soft state
8224 * @user_ioc: User's ioctl packet
8225 * @ioc: ioctl packet
8226 */
8227 static int
megasas_mgmt_fw_ioctl(struct megasas_instance * instance,struct megasas_iocpacket __user * user_ioc,struct megasas_iocpacket * ioc)8228 megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
8229 struct megasas_iocpacket __user * user_ioc,
8230 struct megasas_iocpacket *ioc)
8231 {
8232 struct megasas_sge64 *kern_sge64 = NULL;
8233 struct megasas_sge32 *kern_sge32 = NULL;
8234 struct megasas_cmd *cmd;
8235 void *kbuff_arr[MAX_IOCTL_SGE];
8236 dma_addr_t buf_handle = 0;
8237 int error = 0, i;
8238 void *sense = NULL;
8239 dma_addr_t sense_handle;
8240 void *sense_ptr;
8241 u32 opcode = 0;
8242 int ret = DCMD_SUCCESS;
8243
8244 memset(kbuff_arr, 0, sizeof(kbuff_arr));
8245
8246 if (ioc->sge_count > MAX_IOCTL_SGE) {
8247 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SGE count [%d] > max limit [%d]\n",
8248 ioc->sge_count, MAX_IOCTL_SGE);
8249 return -EINVAL;
8250 }
8251
8252 if ((ioc->frame.hdr.cmd >= MFI_CMD_OP_COUNT) ||
8253 ((ioc->frame.hdr.cmd == MFI_CMD_NVME) &&
8254 !instance->support_nvme_passthru) ||
8255 ((ioc->frame.hdr.cmd == MFI_CMD_TOOLBOX) &&
8256 !instance->support_pci_lane_margining)) {
8257 dev_err(&instance->pdev->dev,
8258 "Received invalid ioctl command 0x%x\n",
8259 ioc->frame.hdr.cmd);
8260 return -ENOTSUPP;
8261 }
8262
8263 cmd = megasas_get_cmd(instance);
8264 if (!cmd) {
8265 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a cmd packet\n");
8266 return -ENOMEM;
8267 }
8268
8269 /*
8270 * User's IOCTL packet has 2 frames (maximum). Copy those two
8271 * frames into our cmd's frames. cmd->frame's context will get
8272 * overwritten when we copy from user's frames. So set that value
8273 * alone separately
8274 */
8275 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
8276 cmd->frame->hdr.context = cpu_to_le32(cmd->index);
8277 cmd->frame->hdr.pad_0 = 0;
8278
8279 cmd->frame->hdr.flags &= (~MFI_FRAME_IEEE);
8280
8281 if (instance->consistent_mask_64bit)
8282 cmd->frame->hdr.flags |= cpu_to_le16((MFI_FRAME_SGL64 |
8283 MFI_FRAME_SENSE64));
8284 else
8285 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_SGL64 |
8286 MFI_FRAME_SENSE64));
8287
8288 if (cmd->frame->hdr.cmd == MFI_CMD_DCMD)
8289 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
8290
8291 if (opcode == MR_DCMD_CTRL_SHUTDOWN) {
8292 mutex_lock(&instance->reset_mutex);
8293 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS) {
8294 megasas_return_cmd(instance, cmd);
8295 mutex_unlock(&instance->reset_mutex);
8296 return -1;
8297 }
8298 mutex_unlock(&instance->reset_mutex);
8299 }
8300
8301 if (opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) {
8302 error = megasas_set_crash_dump_params_ioctl(cmd);
8303 megasas_return_cmd(instance, cmd);
8304 return error;
8305 }
8306
8307 /*
8308 * The management interface between applications and the fw uses
8309 * MFI frames. E.g, RAID configuration changes, LD property changes
8310 * etc are accomplishes through different kinds of MFI frames. The
8311 * driver needs to care only about substituting user buffers with
8312 * kernel buffers in SGLs. The location of SGL is embedded in the
8313 * struct iocpacket itself.
8314 */
8315 if (instance->consistent_mask_64bit)
8316 kern_sge64 = (struct megasas_sge64 *)
8317 ((unsigned long)cmd->frame + ioc->sgl_off);
8318 else
8319 kern_sge32 = (struct megasas_sge32 *)
8320 ((unsigned long)cmd->frame + ioc->sgl_off);
8321
8322 /*
8323 * For each user buffer, create a mirror buffer and copy in
8324 */
8325 for (i = 0; i < ioc->sge_count; i++) {
8326 if (!ioc->sgl[i].iov_len)
8327 continue;
8328
8329 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
8330 ioc->sgl[i].iov_len,
8331 &buf_handle, GFP_KERNEL);
8332 if (!kbuff_arr[i]) {
8333 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc "
8334 "kernel SGL buffer for IOCTL\n");
8335 error = -ENOMEM;
8336 goto out;
8337 }
8338
8339 /*
8340 * We don't change the dma_coherent_mask, so
8341 * dma_alloc_coherent only returns 32bit addresses
8342 */
8343 if (instance->consistent_mask_64bit) {
8344 kern_sge64[i].phys_addr = cpu_to_le64(buf_handle);
8345 kern_sge64[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
8346 } else {
8347 kern_sge32[i].phys_addr = cpu_to_le32(buf_handle);
8348 kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
8349 }
8350
8351 /*
8352 * We created a kernel buffer corresponding to the
8353 * user buffer. Now copy in from the user buffer
8354 */
8355 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
8356 (u32) (ioc->sgl[i].iov_len))) {
8357 error = -EFAULT;
8358 goto out;
8359 }
8360 }
8361
8362 if (ioc->sense_len) {
8363 /* make sure the pointer is part of the frame */
8364 if (ioc->sense_off >
8365 (sizeof(union megasas_frame) - sizeof(__le64))) {
8366 error = -EINVAL;
8367 goto out;
8368 }
8369
8370 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
8371 &sense_handle, GFP_KERNEL);
8372 if (!sense) {
8373 error = -ENOMEM;
8374 goto out;
8375 }
8376
8377 /* always store 64 bits regardless of addressing */
8378 sense_ptr = (void *)cmd->frame + ioc->sense_off;
8379 put_unaligned_le64(sense_handle, sense_ptr);
8380 }
8381
8382 /*
8383 * Set the sync_cmd flag so that the ISR knows not to complete this
8384 * cmd to the SCSI mid-layer
8385 */
8386 cmd->sync_cmd = 1;
8387
8388 ret = megasas_issue_blocked_cmd(instance, cmd, 0);
8389 switch (ret) {
8390 case DCMD_INIT:
8391 case DCMD_BUSY:
8392 cmd->sync_cmd = 0;
8393 dev_err(&instance->pdev->dev,
8394 "return -EBUSY from %s %d cmd 0x%x opcode 0x%x cmd->cmd_status_drv 0x%x\n",
8395 __func__, __LINE__, cmd->frame->hdr.cmd, opcode,
8396 cmd->cmd_status_drv);
8397 error = -EBUSY;
8398 goto out;
8399 }
8400
8401 cmd->sync_cmd = 0;
8402
8403 if (instance->unload == 1) {
8404 dev_info(&instance->pdev->dev, "Driver unload is in progress "
8405 "don't submit data to application\n");
8406 goto out;
8407 }
8408 /*
8409 * copy out the kernel buffers to user buffers
8410 */
8411 for (i = 0; i < ioc->sge_count; i++) {
8412 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
8413 ioc->sgl[i].iov_len)) {
8414 error = -EFAULT;
8415 goto out;
8416 }
8417 }
8418
8419 /*
8420 * copy out the sense
8421 */
8422 if (ioc->sense_len) {
8423 void __user *uptr;
8424 /*
8425 * sense_ptr points to the location that has the user
8426 * sense buffer address
8427 */
8428 sense_ptr = (void *)ioc->frame.raw + ioc->sense_off;
8429 if (in_compat_syscall())
8430 uptr = compat_ptr(get_unaligned((compat_uptr_t *)
8431 sense_ptr));
8432 else
8433 uptr = get_unaligned((void __user **)sense_ptr);
8434
8435 if (copy_to_user(uptr, sense, ioc->sense_len)) {
8436 dev_err(&instance->pdev->dev, "Failed to copy out to user "
8437 "sense data\n");
8438 error = -EFAULT;
8439 goto out;
8440 }
8441 }
8442
8443 /*
8444 * copy the status codes returned by the fw
8445 */
8446 if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
8447 &cmd->frame->hdr.cmd_status, sizeof(u8))) {
8448 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error copying out cmd_status\n");
8449 error = -EFAULT;
8450 }
8451
8452 out:
8453 if (sense) {
8454 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
8455 sense, sense_handle);
8456 }
8457
8458 for (i = 0; i < ioc->sge_count; i++) {
8459 if (kbuff_arr[i]) {
8460 if (instance->consistent_mask_64bit)
8461 dma_free_coherent(&instance->pdev->dev,
8462 le32_to_cpu(kern_sge64[i].length),
8463 kbuff_arr[i],
8464 le64_to_cpu(kern_sge64[i].phys_addr));
8465 else
8466 dma_free_coherent(&instance->pdev->dev,
8467 le32_to_cpu(kern_sge32[i].length),
8468 kbuff_arr[i],
8469 le32_to_cpu(kern_sge32[i].phys_addr));
8470 kbuff_arr[i] = NULL;
8471 }
8472 }
8473
8474 megasas_return_cmd(instance, cmd);
8475 return error;
8476 }
8477
8478 static struct megasas_iocpacket *
megasas_compat_iocpacket_get_user(void __user * arg)8479 megasas_compat_iocpacket_get_user(void __user *arg)
8480 {
8481 struct megasas_iocpacket *ioc;
8482 struct compat_megasas_iocpacket __user *cioc = arg;
8483 size_t size;
8484 int err = -EFAULT;
8485 int i;
8486
8487 ioc = kzalloc(sizeof(*ioc), GFP_KERNEL);
8488 if (!ioc)
8489 return ERR_PTR(-ENOMEM);
8490 size = offsetof(struct megasas_iocpacket, frame) + sizeof(ioc->frame);
8491 if (copy_from_user(ioc, arg, size))
8492 goto out;
8493
8494 for (i = 0; i < MAX_IOCTL_SGE; i++) {
8495 compat_uptr_t iov_base;
8496
8497 if (get_user(iov_base, &cioc->sgl[i].iov_base) ||
8498 get_user(ioc->sgl[i].iov_len, &cioc->sgl[i].iov_len))
8499 goto out;
8500
8501 ioc->sgl[i].iov_base = compat_ptr(iov_base);
8502 }
8503
8504 return ioc;
8505 out:
8506 kfree(ioc);
8507 return ERR_PTR(err);
8508 }
8509
megasas_mgmt_ioctl_fw(struct file * file,unsigned long arg)8510 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
8511 {
8512 struct megasas_iocpacket __user *user_ioc =
8513 (struct megasas_iocpacket __user *)arg;
8514 struct megasas_iocpacket *ioc;
8515 struct megasas_instance *instance;
8516 int error;
8517
8518 if (in_compat_syscall())
8519 ioc = megasas_compat_iocpacket_get_user(user_ioc);
8520 else
8521 ioc = memdup_user(user_ioc, sizeof(struct megasas_iocpacket));
8522
8523 if (IS_ERR(ioc))
8524 return PTR_ERR(ioc);
8525
8526 instance = megasas_lookup_instance(ioc->host_no);
8527 if (!instance) {
8528 error = -ENODEV;
8529 goto out_kfree_ioc;
8530 }
8531
8532 /* Block ioctls in VF mode */
8533 if (instance->requestorId && !allow_vf_ioctls) {
8534 error = -ENODEV;
8535 goto out_kfree_ioc;
8536 }
8537
8538 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
8539 dev_err(&instance->pdev->dev, "Controller in crit error\n");
8540 error = -ENODEV;
8541 goto out_kfree_ioc;
8542 }
8543
8544 if (instance->unload == 1) {
8545 error = -ENODEV;
8546 goto out_kfree_ioc;
8547 }
8548
8549 if (down_interruptible(&instance->ioctl_sem)) {
8550 error = -ERESTARTSYS;
8551 goto out_kfree_ioc;
8552 }
8553
8554 if (megasas_wait_for_adapter_operational(instance)) {
8555 error = -ENODEV;
8556 goto out_up;
8557 }
8558
8559 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
8560 out_up:
8561 up(&instance->ioctl_sem);
8562
8563 out_kfree_ioc:
8564 kfree(ioc);
8565 return error;
8566 }
8567
megasas_mgmt_ioctl_aen(struct file * file,unsigned long arg)8568 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
8569 {
8570 struct megasas_instance *instance;
8571 struct megasas_aen aen;
8572 int error;
8573
8574 if (file->private_data != file) {
8575 printk(KERN_DEBUG "megasas: fasync_helper was not "
8576 "called first\n");
8577 return -EINVAL;
8578 }
8579
8580 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
8581 return -EFAULT;
8582
8583 instance = megasas_lookup_instance(aen.host_no);
8584
8585 if (!instance)
8586 return -ENODEV;
8587
8588 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
8589 return -ENODEV;
8590 }
8591
8592 if (instance->unload == 1) {
8593 return -ENODEV;
8594 }
8595
8596 if (megasas_wait_for_adapter_operational(instance))
8597 return -ENODEV;
8598
8599 mutex_lock(&instance->reset_mutex);
8600 error = megasas_register_aen(instance, aen.seq_num,
8601 aen.class_locale_word);
8602 mutex_unlock(&instance->reset_mutex);
8603 return error;
8604 }
8605
8606 /**
8607 * megasas_mgmt_ioctl - char node ioctl entry point
8608 * @file: char device file pointer
8609 * @cmd: ioctl command
8610 * @arg: ioctl command arguments address
8611 */
8612 static long
megasas_mgmt_ioctl(struct file * file,unsigned int cmd,unsigned long arg)8613 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
8614 {
8615 switch (cmd) {
8616 case MEGASAS_IOC_FIRMWARE:
8617 return megasas_mgmt_ioctl_fw(file, arg);
8618
8619 case MEGASAS_IOC_GET_AEN:
8620 return megasas_mgmt_ioctl_aen(file, arg);
8621 }
8622
8623 return -ENOTTY;
8624 }
8625
8626 #ifdef CONFIG_COMPAT
8627 static long
megasas_mgmt_compat_ioctl(struct file * file,unsigned int cmd,unsigned long arg)8628 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
8629 unsigned long arg)
8630 {
8631 switch (cmd) {
8632 case MEGASAS_IOC_FIRMWARE32:
8633 return megasas_mgmt_ioctl_fw(file, arg);
8634 case MEGASAS_IOC_GET_AEN:
8635 return megasas_mgmt_ioctl_aen(file, arg);
8636 }
8637
8638 return -ENOTTY;
8639 }
8640 #endif
8641
8642 /*
8643 * File operations structure for management interface
8644 */
8645 static const struct file_operations megasas_mgmt_fops = {
8646 .owner = THIS_MODULE,
8647 .open = megasas_mgmt_open,
8648 .fasync = megasas_mgmt_fasync,
8649 .unlocked_ioctl = megasas_mgmt_ioctl,
8650 .poll = megasas_mgmt_poll,
8651 #ifdef CONFIG_COMPAT
8652 .compat_ioctl = megasas_mgmt_compat_ioctl,
8653 #endif
8654 .llseek = noop_llseek,
8655 };
8656
8657 static SIMPLE_DEV_PM_OPS(megasas_pm_ops, megasas_suspend, megasas_resume);
8658
8659 /*
8660 * PCI hotplug support registration structure
8661 */
8662 static struct pci_driver megasas_pci_driver = {
8663
8664 .name = "megaraid_sas",
8665 .id_table = megasas_pci_table,
8666 .probe = megasas_probe_one,
8667 .remove = megasas_detach_one,
8668 .driver.pm = &megasas_pm_ops,
8669 .shutdown = megasas_shutdown,
8670 };
8671
8672 /*
8673 * Sysfs driver attributes
8674 */
version_show(struct device_driver * dd,char * buf)8675 static ssize_t version_show(struct device_driver *dd, char *buf)
8676 {
8677 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
8678 MEGASAS_VERSION);
8679 }
8680 static DRIVER_ATTR_RO(version);
8681
release_date_show(struct device_driver * dd,char * buf)8682 static ssize_t release_date_show(struct device_driver *dd, char *buf)
8683 {
8684 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
8685 MEGASAS_RELDATE);
8686 }
8687 static DRIVER_ATTR_RO(release_date);
8688
support_poll_for_event_show(struct device_driver * dd,char * buf)8689 static ssize_t support_poll_for_event_show(struct device_driver *dd, char *buf)
8690 {
8691 return sprintf(buf, "%u\n", support_poll_for_event);
8692 }
8693 static DRIVER_ATTR_RO(support_poll_for_event);
8694
support_device_change_show(struct device_driver * dd,char * buf)8695 static ssize_t support_device_change_show(struct device_driver *dd, char *buf)
8696 {
8697 return sprintf(buf, "%u\n", support_device_change);
8698 }
8699 static DRIVER_ATTR_RO(support_device_change);
8700
dbg_lvl_show(struct device_driver * dd,char * buf)8701 static ssize_t dbg_lvl_show(struct device_driver *dd, char *buf)
8702 {
8703 return sprintf(buf, "%u\n", megasas_dbg_lvl);
8704 }
8705
dbg_lvl_store(struct device_driver * dd,const char * buf,size_t count)8706 static ssize_t dbg_lvl_store(struct device_driver *dd, const char *buf,
8707 size_t count)
8708 {
8709 int retval = count;
8710
8711 if (sscanf(buf, "%u", &megasas_dbg_lvl) < 1) {
8712 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
8713 retval = -EINVAL;
8714 }
8715 return retval;
8716 }
8717 static DRIVER_ATTR_RW(dbg_lvl);
8718
8719 static ssize_t
support_nvme_encapsulation_show(struct device_driver * dd,char * buf)8720 support_nvme_encapsulation_show(struct device_driver *dd, char *buf)
8721 {
8722 return sprintf(buf, "%u\n", support_nvme_encapsulation);
8723 }
8724
8725 static DRIVER_ATTR_RO(support_nvme_encapsulation);
8726
8727 static ssize_t
support_pci_lane_margining_show(struct device_driver * dd,char * buf)8728 support_pci_lane_margining_show(struct device_driver *dd, char *buf)
8729 {
8730 return sprintf(buf, "%u\n", support_pci_lane_margining);
8731 }
8732
8733 static DRIVER_ATTR_RO(support_pci_lane_margining);
8734
megasas_remove_scsi_device(struct scsi_device * sdev)8735 static inline void megasas_remove_scsi_device(struct scsi_device *sdev)
8736 {
8737 sdev_printk(KERN_INFO, sdev, "SCSI device is removed\n");
8738 scsi_remove_device(sdev);
8739 scsi_device_put(sdev);
8740 }
8741
8742 /**
8743 * megasas_update_device_list - Update the PD and LD device list from FW
8744 * after an AEN event notification
8745 * @instance: Adapter soft state
8746 * @event_type: Indicates type of event (PD or LD event)
8747 *
8748 * @return: Success or failure
8749 *
8750 * Issue DCMDs to Firmware to update the internal device list in driver.
8751 * Based on the FW support, driver sends the HOST_DEVICE_LIST or combination
8752 * of PD_LIST/LD_LIST_QUERY DCMDs to get the device list.
8753 */
8754 static
megasas_update_device_list(struct megasas_instance * instance,int event_type)8755 int megasas_update_device_list(struct megasas_instance *instance,
8756 int event_type)
8757 {
8758 int dcmd_ret;
8759
8760 if (instance->enable_fw_dev_list) {
8761 return megasas_host_device_list_query(instance, false);
8762 } else {
8763 if (event_type & SCAN_PD_CHANNEL) {
8764 dcmd_ret = megasas_get_pd_list(instance);
8765 if (dcmd_ret != DCMD_SUCCESS)
8766 return dcmd_ret;
8767 }
8768
8769 if (event_type & SCAN_VD_CHANNEL) {
8770 if (!instance->requestorId ||
8771 megasas_get_ld_vf_affiliation(instance, 0)) {
8772 return megasas_ld_list_query(instance,
8773 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST);
8774 }
8775 }
8776 }
8777 return DCMD_SUCCESS;
8778 }
8779
8780 /**
8781 * megasas_add_remove_devices - Add/remove devices to SCSI mid-layer
8782 * after an AEN event notification
8783 * @instance: Adapter soft state
8784 * @scan_type: Indicates type of devices (PD/LD) to add
8785 * @return void
8786 */
8787 static
megasas_add_remove_devices(struct megasas_instance * instance,int scan_type)8788 void megasas_add_remove_devices(struct megasas_instance *instance,
8789 int scan_type)
8790 {
8791 int i, j;
8792 u16 pd_index = 0;
8793 u16 ld_index = 0;
8794 u16 channel = 0, id = 0;
8795 struct Scsi_Host *host;
8796 struct scsi_device *sdev1;
8797 struct MR_HOST_DEVICE_LIST *targetid_list = NULL;
8798 struct MR_HOST_DEVICE_LIST_ENTRY *targetid_entry = NULL;
8799
8800 host = instance->host;
8801
8802 if (instance->enable_fw_dev_list) {
8803 targetid_list = instance->host_device_list_buf;
8804 for (i = 0; i < targetid_list->count; i++) {
8805 targetid_entry = &targetid_list->host_device_list[i];
8806 if (targetid_entry->flags.u.bits.is_sys_pd) {
8807 channel = le16_to_cpu(targetid_entry->target_id) /
8808 MEGASAS_MAX_DEV_PER_CHANNEL;
8809 id = le16_to_cpu(targetid_entry->target_id) %
8810 MEGASAS_MAX_DEV_PER_CHANNEL;
8811 } else {
8812 channel = MEGASAS_MAX_PD_CHANNELS +
8813 (le16_to_cpu(targetid_entry->target_id) /
8814 MEGASAS_MAX_DEV_PER_CHANNEL);
8815 id = le16_to_cpu(targetid_entry->target_id) %
8816 MEGASAS_MAX_DEV_PER_CHANNEL;
8817 }
8818 sdev1 = scsi_device_lookup(host, channel, id, 0);
8819 if (!sdev1) {
8820 scsi_add_device(host, channel, id, 0);
8821 } else {
8822 scsi_device_put(sdev1);
8823 }
8824 }
8825 }
8826
8827 if (scan_type & SCAN_PD_CHANNEL) {
8828 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
8829 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
8830 pd_index = i * MEGASAS_MAX_DEV_PER_CHANNEL + j;
8831 sdev1 = scsi_device_lookup(host, i, j, 0);
8832 if (instance->pd_list[pd_index].driveState ==
8833 MR_PD_STATE_SYSTEM) {
8834 if (!sdev1)
8835 scsi_add_device(host, i, j, 0);
8836 else
8837 scsi_device_put(sdev1);
8838 } else {
8839 if (sdev1)
8840 megasas_remove_scsi_device(sdev1);
8841 }
8842 }
8843 }
8844 }
8845
8846 if (scan_type & SCAN_VD_CHANNEL) {
8847 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
8848 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
8849 ld_index = (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
8850 sdev1 = scsi_device_lookup(host,
8851 MEGASAS_MAX_PD_CHANNELS + i, j, 0);
8852 if (instance->ld_ids[ld_index] != 0xff) {
8853 if (!sdev1)
8854 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
8855 else
8856 scsi_device_put(sdev1);
8857 } else {
8858 if (sdev1)
8859 megasas_remove_scsi_device(sdev1);
8860 }
8861 }
8862 }
8863 }
8864
8865 }
8866
8867 static void
megasas_aen_polling(struct work_struct * work)8868 megasas_aen_polling(struct work_struct *work)
8869 {
8870 struct megasas_aen_event *ev =
8871 container_of(work, struct megasas_aen_event, hotplug_work.work);
8872 struct megasas_instance *instance = ev->instance;
8873 union megasas_evt_class_locale class_locale;
8874 int event_type = 0;
8875 u32 seq_num;
8876 u16 ld_target_id;
8877 int error;
8878 u8 dcmd_ret = DCMD_SUCCESS;
8879 struct scsi_device *sdev1;
8880
8881 if (!instance) {
8882 printk(KERN_ERR "invalid instance!\n");
8883 kfree(ev);
8884 return;
8885 }
8886
8887 /* Don't run the event workqueue thread if OCR is running */
8888 mutex_lock(&instance->reset_mutex);
8889
8890 instance->ev = NULL;
8891 if (instance->evt_detail) {
8892 megasas_decode_evt(instance);
8893
8894 switch (le32_to_cpu(instance->evt_detail->code)) {
8895
8896 case MR_EVT_PD_INSERTED:
8897 case MR_EVT_PD_REMOVED:
8898 event_type = SCAN_PD_CHANNEL;
8899 break;
8900
8901 case MR_EVT_LD_OFFLINE:
8902 case MR_EVT_LD_DELETED:
8903 ld_target_id = instance->evt_detail->args.ld.target_id;
8904 sdev1 = scsi_device_lookup(instance->host,
8905 MEGASAS_MAX_PD_CHANNELS +
8906 (ld_target_id / MEGASAS_MAX_DEV_PER_CHANNEL),
8907 (ld_target_id % MEGASAS_MAX_DEV_PER_CHANNEL),
8908 0);
8909 if (sdev1) {
8910 mutex_unlock(&instance->reset_mutex);
8911 megasas_remove_scsi_device(sdev1);
8912 mutex_lock(&instance->reset_mutex);
8913 }
8914
8915 event_type = SCAN_VD_CHANNEL;
8916 break;
8917 case MR_EVT_LD_CREATED:
8918 event_type = SCAN_VD_CHANNEL;
8919 break;
8920
8921 case MR_EVT_CFG_CLEARED:
8922 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
8923 case MR_EVT_FOREIGN_CFG_IMPORTED:
8924 case MR_EVT_LD_STATE_CHANGE:
8925 event_type = SCAN_PD_CHANNEL | SCAN_VD_CHANNEL;
8926 dev_info(&instance->pdev->dev, "scanning for scsi%d...\n",
8927 instance->host->host_no);
8928 break;
8929
8930 case MR_EVT_CTRL_PROP_CHANGED:
8931 dcmd_ret = megasas_get_ctrl_info(instance);
8932 if (dcmd_ret == DCMD_SUCCESS &&
8933 instance->snapdump_wait_time) {
8934 megasas_get_snapdump_properties(instance);
8935 dev_info(&instance->pdev->dev,
8936 "Snap dump wait time\t: %d\n",
8937 instance->snapdump_wait_time);
8938 }
8939 break;
8940 default:
8941 event_type = 0;
8942 break;
8943 }
8944 } else {
8945 dev_err(&instance->pdev->dev, "invalid evt_detail!\n");
8946 mutex_unlock(&instance->reset_mutex);
8947 kfree(ev);
8948 return;
8949 }
8950
8951 if (event_type)
8952 dcmd_ret = megasas_update_device_list(instance, event_type);
8953
8954 mutex_unlock(&instance->reset_mutex);
8955
8956 if (event_type && dcmd_ret == DCMD_SUCCESS)
8957 megasas_add_remove_devices(instance, event_type);
8958
8959 if (dcmd_ret == DCMD_SUCCESS)
8960 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1;
8961 else
8962 seq_num = instance->last_seq_num;
8963
8964 /* Register AEN with FW for latest sequence number plus 1 */
8965 class_locale.members.reserved = 0;
8966 class_locale.members.locale = MR_EVT_LOCALE_ALL;
8967 class_locale.members.class = MR_EVT_CLASS_DEBUG;
8968
8969 if (instance->aen_cmd != NULL) {
8970 kfree(ev);
8971 return;
8972 }
8973
8974 mutex_lock(&instance->reset_mutex);
8975 error = megasas_register_aen(instance, seq_num,
8976 class_locale.word);
8977 if (error)
8978 dev_err(&instance->pdev->dev,
8979 "register aen failed error %x\n", error);
8980
8981 mutex_unlock(&instance->reset_mutex);
8982 kfree(ev);
8983 }
8984
8985 /**
8986 * megasas_init - Driver load entry point
8987 */
megasas_init(void)8988 static int __init megasas_init(void)
8989 {
8990 int rval;
8991
8992 /*
8993 * Booted in kdump kernel, minimize memory footprints by
8994 * disabling few features
8995 */
8996 if (reset_devices) {
8997 msix_vectors = 1;
8998 rdpq_enable = 0;
8999 dual_qdepth_disable = 1;
9000 poll_queues = 0;
9001 }
9002
9003 /*
9004 * Announce driver version and other information
9005 */
9006 pr_info("megasas: %s\n", MEGASAS_VERSION);
9007
9008 megasas_dbg_lvl = 0;
9009 support_poll_for_event = 2;
9010 support_device_change = 1;
9011 support_nvme_encapsulation = true;
9012 support_pci_lane_margining = true;
9013
9014 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
9015
9016 /*
9017 * Register character device node
9018 */
9019 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
9020
9021 if (rval < 0) {
9022 printk(KERN_DEBUG "megasas: failed to open device node\n");
9023 return rval;
9024 }
9025
9026 megasas_mgmt_majorno = rval;
9027
9028 megasas_init_debugfs();
9029
9030 /*
9031 * Register ourselves as PCI hotplug module
9032 */
9033 rval = pci_register_driver(&megasas_pci_driver);
9034
9035 if (rval) {
9036 printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n");
9037 goto err_pcidrv;
9038 }
9039
9040 if ((event_log_level < MFI_EVT_CLASS_DEBUG) ||
9041 (event_log_level > MFI_EVT_CLASS_DEAD)) {
9042 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");
9043 event_log_level = MFI_EVT_CLASS_CRITICAL;
9044 }
9045
9046 rval = driver_create_file(&megasas_pci_driver.driver,
9047 &driver_attr_version);
9048 if (rval)
9049 goto err_dcf_attr_ver;
9050
9051 rval = driver_create_file(&megasas_pci_driver.driver,
9052 &driver_attr_release_date);
9053 if (rval)
9054 goto err_dcf_rel_date;
9055
9056 rval = driver_create_file(&megasas_pci_driver.driver,
9057 &driver_attr_support_poll_for_event);
9058 if (rval)
9059 goto err_dcf_support_poll_for_event;
9060
9061 rval = driver_create_file(&megasas_pci_driver.driver,
9062 &driver_attr_dbg_lvl);
9063 if (rval)
9064 goto err_dcf_dbg_lvl;
9065 rval = driver_create_file(&megasas_pci_driver.driver,
9066 &driver_attr_support_device_change);
9067 if (rval)
9068 goto err_dcf_support_device_change;
9069
9070 rval = driver_create_file(&megasas_pci_driver.driver,
9071 &driver_attr_support_nvme_encapsulation);
9072 if (rval)
9073 goto err_dcf_support_nvme_encapsulation;
9074
9075 rval = driver_create_file(&megasas_pci_driver.driver,
9076 &driver_attr_support_pci_lane_margining);
9077 if (rval)
9078 goto err_dcf_support_pci_lane_margining;
9079
9080 return rval;
9081
9082 err_dcf_support_pci_lane_margining:
9083 driver_remove_file(&megasas_pci_driver.driver,
9084 &driver_attr_support_nvme_encapsulation);
9085
9086 err_dcf_support_nvme_encapsulation:
9087 driver_remove_file(&megasas_pci_driver.driver,
9088 &driver_attr_support_device_change);
9089
9090 err_dcf_support_device_change:
9091 driver_remove_file(&megasas_pci_driver.driver,
9092 &driver_attr_dbg_lvl);
9093 err_dcf_dbg_lvl:
9094 driver_remove_file(&megasas_pci_driver.driver,
9095 &driver_attr_support_poll_for_event);
9096 err_dcf_support_poll_for_event:
9097 driver_remove_file(&megasas_pci_driver.driver,
9098 &driver_attr_release_date);
9099 err_dcf_rel_date:
9100 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
9101 err_dcf_attr_ver:
9102 pci_unregister_driver(&megasas_pci_driver);
9103 err_pcidrv:
9104 megasas_exit_debugfs();
9105 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
9106 return rval;
9107 }
9108
9109 /**
9110 * megasas_exit - Driver unload entry point
9111 */
megasas_exit(void)9112 static void __exit megasas_exit(void)
9113 {
9114 driver_remove_file(&megasas_pci_driver.driver,
9115 &driver_attr_dbg_lvl);
9116 driver_remove_file(&megasas_pci_driver.driver,
9117 &driver_attr_support_poll_for_event);
9118 driver_remove_file(&megasas_pci_driver.driver,
9119 &driver_attr_support_device_change);
9120 driver_remove_file(&megasas_pci_driver.driver,
9121 &driver_attr_release_date);
9122 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
9123 driver_remove_file(&megasas_pci_driver.driver,
9124 &driver_attr_support_nvme_encapsulation);
9125 driver_remove_file(&megasas_pci_driver.driver,
9126 &driver_attr_support_pci_lane_margining);
9127
9128 pci_unregister_driver(&megasas_pci_driver);
9129 megasas_exit_debugfs();
9130 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
9131 }
9132
9133 module_init(megasas_init);
9134 module_exit(megasas_exit);
9135