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