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Linux 4.9.243
[linux/fpc-iii.git] / drivers / scsi / megaraid / megaraid_sas_base.c
blob9fa6a560b16294a788639929850b29576412779a
1 /*
2 * Linux MegaRAID driver for SAS based RAID controllers
3 *
4 * Copyright (c) 2003-2013 LSI Corporation
5 * Copyright (c) 2013-2014 Avago Technologies
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
19 *
20 * Authors: Avago Technologies
21 * Sreenivas Bagalkote
22 * Sumant Patro
23 * Bo Yang
24 * Adam Radford
25 * Kashyap Desai <kashyap.desai@avagotech.com>
26 * Sumit Saxena <sumit.saxena@avagotech.com>
27 *
28 * Send feedback to: megaraidlinux.pdl@avagotech.com
29 *
30 * Mail to: Avago Technologies, 350 West Trimble Road, Building 90,
31 * San Jose, California 95131
32 */
33
34 #include <linux/kernel.h>
35 #include <linux/types.h>
36 #include <linux/pci.h>
37 #include <linux/list.h>
38 #include <linux/moduleparam.h>
39 #include <linux/module.h>
40 #include <linux/spinlock.h>
41 #include <linux/interrupt.h>
42 #include <linux/delay.h>
43 #include <linux/uio.h>
44 #include <linux/slab.h>
45 #include <asm/uaccess.h>
46 #include <linux/fs.h>
47 #include <linux/compat.h>
48 #include <linux/blkdev.h>
49 #include <linux/mutex.h>
50 #include <linux/poll.h>
51
52 #include <scsi/scsi.h>
53 #include <scsi/scsi_cmnd.h>
54 #include <scsi/scsi_device.h>
55 #include <scsi/scsi_host.h>
56 #include <scsi/scsi_tcq.h>
57 #include "megaraid_sas_fusion.h"
58 #include "megaraid_sas.h"
59
60 /*
61 * Number of sectors per IO command
62 * Will be set in megasas_init_mfi if user does not provide
63 */
64 static unsigned int max_sectors;
65 module_param_named(max_sectors, max_sectors, int, 0);
66 MODULE_PARM_DESC(max_sectors,
67 "Maximum number of sectors per IO command");
68
69 static int msix_disable;
70 module_param(msix_disable, int, S_IRUGO);
71 MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0");
72
73 static unsigned int msix_vectors;
74 module_param(msix_vectors, int, S_IRUGO);
75 MODULE_PARM_DESC(msix_vectors, "MSI-X max vector count. Default: Set by FW");
76
77 static int allow_vf_ioctls;
78 module_param(allow_vf_ioctls, int, S_IRUGO);
79 MODULE_PARM_DESC(allow_vf_ioctls, "Allow ioctls in SR-IOV VF mode. Default: 0");
80
81 static unsigned int throttlequeuedepth = MEGASAS_THROTTLE_QUEUE_DEPTH;
82 module_param(throttlequeuedepth, int, S_IRUGO);
83 MODULE_PARM_DESC(throttlequeuedepth,
84 "Adapter queue depth when throttled due to I/O timeout. Default: 16");
85
86 unsigned int resetwaittime = MEGASAS_RESET_WAIT_TIME;
87 module_param(resetwaittime, int, S_IRUGO);
88 MODULE_PARM_DESC(resetwaittime, "Wait time in seconds after I/O timeout "
89 "before resetting adapter. Default: 180");
90
91 int smp_affinity_enable = 1;
92 module_param(smp_affinity_enable, int, S_IRUGO);
93 MODULE_PARM_DESC(smp_affinity_enable, "SMP affinity feature enable/disbale Default: enable(1)");
94
95 int rdpq_enable = 1;
96 module_param(rdpq_enable, int, S_IRUGO);
97 MODULE_PARM_DESC(rdpq_enable, " Allocate reply queue in chunks for large queue depth enable/disable Default: disable(0)");
98
99 unsigned int dual_qdepth_disable;
100 module_param(dual_qdepth_disable, int, S_IRUGO);
101 MODULE_PARM_DESC(dual_qdepth_disable, "Disable dual queue depth feature. Default: 0");
102
103 unsigned int scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
104 module_param(scmd_timeout, int, S_IRUGO);
105 MODULE_PARM_DESC(scmd_timeout, "scsi command timeout (10-90s), default 90s. See megasas_reset_timer.");
106
107 MODULE_LICENSE("GPL");
108 MODULE_VERSION(MEGASAS_VERSION);
109 MODULE_AUTHOR("megaraidlinux.pdl@avagotech.com");
110 MODULE_DESCRIPTION("Avago MegaRAID SAS Driver");
111
112 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
113 static int megasas_get_pd_list(struct megasas_instance *instance);
114 static int megasas_ld_list_query(struct megasas_instance *instance,
115 u8 query_type);
116 static int megasas_issue_init_mfi(struct megasas_instance *instance);
117 static int megasas_register_aen(struct megasas_instance *instance,
118 u32 seq_num, u32 class_locale_word);
119 static int
120 megasas_get_pd_info(struct megasas_instance *instance, u16 device_id);
121 /*
122 * PCI ID table for all supported controllers
123 */
124 static struct pci_device_id megasas_pci_table[] = {
125
126 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
127 /* xscale IOP */
128 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
129 /* ppc IOP */
130 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
131 /* ppc IOP */
132 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
133 /* gen2*/
134 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
135 /* gen2*/
136 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
137 /* skinny*/
138 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
139 /* skinny*/
140 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
141 /* xscale IOP, vega */
142 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
143 /* xscale IOP */
144 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)},
145 /* Fusion */
146 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)},
147 /* Plasma */
148 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)},
149 /* Invader */
150 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)},
151 /* Fury */
152 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER)},
153 /* Intruder */
154 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER_24)},
155 /* Intruder 24 port*/
156 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_52)},
157 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_53)},
158 {}
159 };
160
161 MODULE_DEVICE_TABLE(pci, megasas_pci_table);
162
163 static int megasas_mgmt_majorno;
164 struct megasas_mgmt_info megasas_mgmt_info;
165 static struct fasync_struct *megasas_async_queue;
166 static DEFINE_MUTEX(megasas_async_queue_mutex);
167
168 static int megasas_poll_wait_aen;
169 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
170 static u32 support_poll_for_event;
171 u32 megasas_dbg_lvl;
172 static u32 support_device_change;
173
174 /* define lock for aen poll */
175 spinlock_t poll_aen_lock;
176
177 void
178 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
179 u8 alt_status);
180 static u32
181 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs);
182 static int
183 megasas_adp_reset_gen2(struct megasas_instance *instance,
184 struct megasas_register_set __iomem *reg_set);
185 static irqreturn_t megasas_isr(int irq, void *devp);
186 static u32
187 megasas_init_adapter_mfi(struct megasas_instance *instance);
188 u32
189 megasas_build_and_issue_cmd(struct megasas_instance *instance,
190 struct scsi_cmnd *scmd);
191 static void megasas_complete_cmd_dpc(unsigned long instance_addr);
192 int
193 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
194 int seconds);
195 void megasas_fusion_ocr_wq(struct work_struct *work);
196 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
197 int initial);
198
199 int
200 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
201 {
202 instance->instancet->fire_cmd(instance,
203 cmd->frame_phys_addr, 0, instance->reg_set);
204 return 0;
205 }
206
207 /**
208 * megasas_get_cmd - Get a command from the free pool
209 * @instance: Adapter soft state
210 *
211 * Returns a free command from the pool
212 */
213 struct megasas_cmd *megasas_get_cmd(struct megasas_instance
214 *instance)
215 {
216 unsigned long flags;
217 struct megasas_cmd *cmd = NULL;
218
219 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
220
221 if (!list_empty(&instance->cmd_pool)) {
222 cmd = list_entry((&instance->cmd_pool)->next,
223 struct megasas_cmd, list);
224 list_del_init(&cmd->list);
225 } else {
226 dev_err(&instance->pdev->dev, "Command pool empty!\n");
227 }
228
229 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
230 return cmd;
231 }
232
233 /**
234 * megasas_return_cmd - Return a cmd to free command pool
235 * @instance: Adapter soft state
236 * @cmd: Command packet to be returned to free command pool
237 */
238 inline void
239 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
240 {
241 unsigned long flags;
242 u32 blk_tags;
243 struct megasas_cmd_fusion *cmd_fusion;
244 struct fusion_context *fusion = instance->ctrl_context;
245
246 /* This flag is used only for fusion adapter.
247 * Wait for Interrupt for Polled mode DCMD
248 */
249 if (cmd->flags & DRV_DCMD_POLLED_MODE)
250 return;
251
252 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
253
254 if (fusion) {
255 blk_tags = instance->max_scsi_cmds + cmd->index;
256 cmd_fusion = fusion->cmd_list[blk_tags];
257 megasas_return_cmd_fusion(instance, cmd_fusion);
258 }
259 cmd->scmd = NULL;
260 cmd->frame_count = 0;
261 cmd->flags = 0;
262 if (!fusion && reset_devices)
263 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
264 list_add(&cmd->list, (&instance->cmd_pool)->next);
265
266 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
267
268 }
269
270 static const char *
271 format_timestamp(uint32_t timestamp)
272 {
273 static char buffer[32];
274
275 if ((timestamp & 0xff000000) == 0xff000000)
276 snprintf(buffer, sizeof(buffer), "boot + %us", timestamp &
277 0x00ffffff);
278 else
279 snprintf(buffer, sizeof(buffer), "%us", timestamp);
280 return buffer;
281 }
282
283 static const char *
284 format_class(int8_t class)
285 {
286 static char buffer[6];
287
288 switch (class) {
289 case MFI_EVT_CLASS_DEBUG:
290 return "debug";
291 case MFI_EVT_CLASS_PROGRESS:
292 return "progress";
293 case MFI_EVT_CLASS_INFO:
294 return "info";
295 case MFI_EVT_CLASS_WARNING:
296 return "WARN";
297 case MFI_EVT_CLASS_CRITICAL:
298 return "CRIT";
299 case MFI_EVT_CLASS_FATAL:
300 return "FATAL";
301 case MFI_EVT_CLASS_DEAD:
302 return "DEAD";
303 default:
304 snprintf(buffer, sizeof(buffer), "%d", class);
305 return buffer;
306 }
307 }
308
309 /**
310 * megasas_decode_evt: Decode FW AEN event and print critical event
311 * for information.
312 * @instance: Adapter soft state
313 */
314 static void
315 megasas_decode_evt(struct megasas_instance *instance)
316 {
317 struct megasas_evt_detail *evt_detail = instance->evt_detail;
318 union megasas_evt_class_locale class_locale;
319 class_locale.word = le32_to_cpu(evt_detail->cl.word);
320
321 if (class_locale.members.class >= MFI_EVT_CLASS_CRITICAL)
322 dev_info(&instance->pdev->dev, "%d (%s/0x%04x/%s) - %s\n",
323 le32_to_cpu(evt_detail->seq_num),
324 format_timestamp(le32_to_cpu(evt_detail->time_stamp)),
325 (class_locale.members.locale),
326 format_class(class_locale.members.class),
327 evt_detail->description);
328 }
329
330 /**
331 * The following functions are defined for xscale
332 * (deviceid : 1064R, PERC5) controllers
333 */
334
335 /**
336 * megasas_enable_intr_xscale - Enables interrupts
337 * @regs: MFI register set
338 */
339 static inline void
340 megasas_enable_intr_xscale(struct megasas_instance *instance)
341 {
342 struct megasas_register_set __iomem *regs;
343
344 regs = instance->reg_set;
345 writel(0, &(regs)->outbound_intr_mask);
346
347 /* Dummy readl to force pci flush */
348 readl(&regs->outbound_intr_mask);
349 }
350
351 /**
352 * megasas_disable_intr_xscale -Disables interrupt
353 * @regs: MFI register set
354 */
355 static inline void
356 megasas_disable_intr_xscale(struct megasas_instance *instance)
357 {
358 struct megasas_register_set __iomem *regs;
359 u32 mask = 0x1f;
360
361 regs = instance->reg_set;
362 writel(mask, &regs->outbound_intr_mask);
363 /* Dummy readl to force pci flush */
364 readl(&regs->outbound_intr_mask);
365 }
366
367 /**
368 * megasas_read_fw_status_reg_xscale - returns the current FW status value
369 * @regs: MFI register set
370 */
371 static u32
372 megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs)
373 {
374 return readl(&(regs)->outbound_msg_0);
375 }
376 /**
377 * megasas_clear_interrupt_xscale - Check & clear interrupt
378 * @regs: MFI register set
379 */
380 static int
381 megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs)
382 {
383 u32 status;
384 u32 mfiStatus = 0;
385
386 /*
387 * Check if it is our interrupt
388 */
389 status = readl(&regs->outbound_intr_status);
390
391 if (status & MFI_OB_INTR_STATUS_MASK)
392 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
393 if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
394 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
395
396 /*
397 * Clear the interrupt by writing back the same value
398 */
399 if (mfiStatus)
400 writel(status, &regs->outbound_intr_status);
401
402 /* Dummy readl to force pci flush */
403 readl(&regs->outbound_intr_status);
404
405 return mfiStatus;
406 }
407
408 /**
409 * megasas_fire_cmd_xscale - Sends command to the FW
410 * @frame_phys_addr : Physical address of cmd
411 * @frame_count : Number of frames for the command
412 * @regs : MFI register set
413 */
414 static inline void
415 megasas_fire_cmd_xscale(struct megasas_instance *instance,
416 dma_addr_t frame_phys_addr,
417 u32 frame_count,
418 struct megasas_register_set __iomem *regs)
419 {
420 unsigned long flags;
421
422 spin_lock_irqsave(&instance->hba_lock, flags);
423 writel((frame_phys_addr >> 3)|(frame_count),
424 &(regs)->inbound_queue_port);
425 spin_unlock_irqrestore(&instance->hba_lock, flags);
426 }
427
428 /**
429 * megasas_adp_reset_xscale - For controller reset
430 * @regs: MFI register set
431 */
432 static int
433 megasas_adp_reset_xscale(struct megasas_instance *instance,
434 struct megasas_register_set __iomem *regs)
435 {
436 u32 i;
437 u32 pcidata;
438
439 writel(MFI_ADP_RESET, &regs->inbound_doorbell);
440
441 for (i = 0; i < 3; i++)
442 msleep(1000); /* sleep for 3 secs */
443 pcidata = 0;
444 pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
445 dev_notice(&instance->pdev->dev, "pcidata = %x\n", pcidata);
446 if (pcidata & 0x2) {
447 dev_notice(&instance->pdev->dev, "mfi 1068 offset read=%x\n", pcidata);
448 pcidata &= ~0x2;
449 pci_write_config_dword(instance->pdev,
450 MFI_1068_PCSR_OFFSET, pcidata);
451
452 for (i = 0; i < 2; i++)
453 msleep(1000); /* need to wait 2 secs again */
454
455 pcidata = 0;
456 pci_read_config_dword(instance->pdev,
457 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
458 dev_notice(&instance->pdev->dev, "1068 offset handshake read=%x\n", pcidata);
459 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
460 dev_notice(&instance->pdev->dev, "1068 offset pcidt=%x\n", pcidata);
461 pcidata = 0;
462 pci_write_config_dword(instance->pdev,
463 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
464 }
465 }
466 return 0;
467 }
468
469 /**
470 * megasas_check_reset_xscale - For controller reset check
471 * @regs: MFI register set
472 */
473 static int
474 megasas_check_reset_xscale(struct megasas_instance *instance,
475 struct megasas_register_set __iomem *regs)
476 {
477 if ((atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) &&
478 (le32_to_cpu(*instance->consumer) ==
479 MEGASAS_ADPRESET_INPROG_SIGN))
480 return 1;
481 return 0;
482 }
483
484 static struct megasas_instance_template megasas_instance_template_xscale = {
485
486 .fire_cmd = megasas_fire_cmd_xscale,
487 .enable_intr = megasas_enable_intr_xscale,
488 .disable_intr = megasas_disable_intr_xscale,
489 .clear_intr = megasas_clear_intr_xscale,
490 .read_fw_status_reg = megasas_read_fw_status_reg_xscale,
491 .adp_reset = megasas_adp_reset_xscale,
492 .check_reset = megasas_check_reset_xscale,
493 .service_isr = megasas_isr,
494 .tasklet = megasas_complete_cmd_dpc,
495 .init_adapter = megasas_init_adapter_mfi,
496 .build_and_issue_cmd = megasas_build_and_issue_cmd,
497 .issue_dcmd = megasas_issue_dcmd,
498 };
499
500 /**
501 * This is the end of set of functions & definitions specific
502 * to xscale (deviceid : 1064R, PERC5) controllers
503 */
504
505 /**
506 * The following functions are defined for ppc (deviceid : 0x60)
507 * controllers
508 */
509
510 /**
511 * megasas_enable_intr_ppc - Enables interrupts
512 * @regs: MFI register set
513 */
514 static inline void
515 megasas_enable_intr_ppc(struct megasas_instance *instance)
516 {
517 struct megasas_register_set __iomem *regs;
518
519 regs = instance->reg_set;
520 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
521
522 writel(~0x80000000, &(regs)->outbound_intr_mask);
523
524 /* Dummy readl to force pci flush */
525 readl(&regs->outbound_intr_mask);
526 }
527
528 /**
529 * megasas_disable_intr_ppc - Disable interrupt
530 * @regs: MFI register set
531 */
532 static inline void
533 megasas_disable_intr_ppc(struct megasas_instance *instance)
534 {
535 struct megasas_register_set __iomem *regs;
536 u32 mask = 0xFFFFFFFF;
537
538 regs = instance->reg_set;
539 writel(mask, &regs->outbound_intr_mask);
540 /* Dummy readl to force pci flush */
541 readl(&regs->outbound_intr_mask);
542 }
543
544 /**
545 * megasas_read_fw_status_reg_ppc - returns the current FW status value
546 * @regs: MFI register set
547 */
548 static u32
549 megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs)
550 {
551 return readl(&(regs)->outbound_scratch_pad);
552 }
553
554 /**
555 * megasas_clear_interrupt_ppc - Check & clear interrupt
556 * @regs: MFI register set
557 */
558 static int
559 megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs)
560 {
561 u32 status, mfiStatus = 0;
562
563 /*
564 * Check if it is our interrupt
565 */
566 status = readl(&regs->outbound_intr_status);
567
568 if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT)
569 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
570
571 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT)
572 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
573
574 /*
575 * Clear the interrupt by writing back the same value
576 */
577 writel(status, &regs->outbound_doorbell_clear);
578
579 /* Dummy readl to force pci flush */
580 readl(&regs->outbound_doorbell_clear);
581
582 return mfiStatus;
583 }
584
585 /**
586 * megasas_fire_cmd_ppc - Sends command to the FW
587 * @frame_phys_addr : Physical address of cmd
588 * @frame_count : Number of frames for the command
589 * @regs : MFI register set
590 */
591 static inline void
592 megasas_fire_cmd_ppc(struct megasas_instance *instance,
593 dma_addr_t frame_phys_addr,
594 u32 frame_count,
595 struct megasas_register_set __iomem *regs)
596 {
597 unsigned long flags;
598
599 spin_lock_irqsave(&instance->hba_lock, flags);
600 writel((frame_phys_addr | (frame_count<<1))|1,
601 &(regs)->inbound_queue_port);
602 spin_unlock_irqrestore(&instance->hba_lock, flags);
603 }
604
605 /**
606 * megasas_check_reset_ppc - For controller reset check
607 * @regs: MFI register set
608 */
609 static int
610 megasas_check_reset_ppc(struct megasas_instance *instance,
611 struct megasas_register_set __iomem *regs)
612 {
613 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
614 return 1;
615
616 return 0;
617 }
618
619 static struct megasas_instance_template megasas_instance_template_ppc = {
620
621 .fire_cmd = megasas_fire_cmd_ppc,
622 .enable_intr = megasas_enable_intr_ppc,
623 .disable_intr = megasas_disable_intr_ppc,
624 .clear_intr = megasas_clear_intr_ppc,
625 .read_fw_status_reg = megasas_read_fw_status_reg_ppc,
626 .adp_reset = megasas_adp_reset_xscale,
627 .check_reset = megasas_check_reset_ppc,
628 .service_isr = megasas_isr,
629 .tasklet = megasas_complete_cmd_dpc,
630 .init_adapter = megasas_init_adapter_mfi,
631 .build_and_issue_cmd = megasas_build_and_issue_cmd,
632 .issue_dcmd = megasas_issue_dcmd,
633 };
634
635 /**
636 * megasas_enable_intr_skinny - Enables interrupts
637 * @regs: MFI register set
638 */
639 static inline void
640 megasas_enable_intr_skinny(struct megasas_instance *instance)
641 {
642 struct megasas_register_set __iomem *regs;
643
644 regs = instance->reg_set;
645 writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
646
647 writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
648
649 /* Dummy readl to force pci flush */
650 readl(&regs->outbound_intr_mask);
651 }
652
653 /**
654 * megasas_disable_intr_skinny - Disables interrupt
655 * @regs: MFI register set
656 */
657 static inline void
658 megasas_disable_intr_skinny(struct megasas_instance *instance)
659 {
660 struct megasas_register_set __iomem *regs;
661 u32 mask = 0xFFFFFFFF;
662
663 regs = instance->reg_set;
664 writel(mask, &regs->outbound_intr_mask);
665 /* Dummy readl to force pci flush */
666 readl(&regs->outbound_intr_mask);
667 }
668
669 /**
670 * megasas_read_fw_status_reg_skinny - returns the current FW status value
671 * @regs: MFI register set
672 */
673 static u32
674 megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem *regs)
675 {
676 return readl(&(regs)->outbound_scratch_pad);
677 }
678
679 /**
680 * megasas_clear_interrupt_skinny - Check & clear interrupt
681 * @regs: MFI register set
682 */
683 static int
684 megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs)
685 {
686 u32 status;
687 u32 mfiStatus = 0;
688
689 /*
690 * Check if it is our interrupt
691 */
692 status = readl(&regs->outbound_intr_status);
693
694 if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
695 return 0;
696 }
697
698 /*
699 * Check if it is our interrupt
700 */
701 if ((megasas_read_fw_status_reg_skinny(regs) & MFI_STATE_MASK) ==
702 MFI_STATE_FAULT) {
703 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
704 } else
705 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
706
707 /*
708 * Clear the interrupt by writing back the same value
709 */
710 writel(status, &regs->outbound_intr_status);
711
712 /*
713 * dummy read to flush PCI
714 */
715 readl(&regs->outbound_intr_status);
716
717 return mfiStatus;
718 }
719
720 /**
721 * megasas_fire_cmd_skinny - Sends command to the FW
722 * @frame_phys_addr : Physical address of cmd
723 * @frame_count : Number of frames for the command
724 * @regs : MFI register set
725 */
726 static inline void
727 megasas_fire_cmd_skinny(struct megasas_instance *instance,
728 dma_addr_t frame_phys_addr,
729 u32 frame_count,
730 struct megasas_register_set __iomem *regs)
731 {
732 unsigned long flags;
733
734 spin_lock_irqsave(&instance->hba_lock, flags);
735 writel(upper_32_bits(frame_phys_addr),
736 &(regs)->inbound_high_queue_port);
737 writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1,
738 &(regs)->inbound_low_queue_port);
739 mmiowb();
740 spin_unlock_irqrestore(&instance->hba_lock, flags);
741 }
742
743 /**
744 * megasas_check_reset_skinny - For controller reset check
745 * @regs: MFI register set
746 */
747 static int
748 megasas_check_reset_skinny(struct megasas_instance *instance,
749 struct megasas_register_set __iomem *regs)
750 {
751 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
752 return 1;
753
754 return 0;
755 }
756
757 static struct megasas_instance_template megasas_instance_template_skinny = {
758
759 .fire_cmd = megasas_fire_cmd_skinny,
760 .enable_intr = megasas_enable_intr_skinny,
761 .disable_intr = megasas_disable_intr_skinny,
762 .clear_intr = megasas_clear_intr_skinny,
763 .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
764 .adp_reset = megasas_adp_reset_gen2,
765 .check_reset = megasas_check_reset_skinny,
766 .service_isr = megasas_isr,
767 .tasklet = megasas_complete_cmd_dpc,
768 .init_adapter = megasas_init_adapter_mfi,
769 .build_and_issue_cmd = megasas_build_and_issue_cmd,
770 .issue_dcmd = megasas_issue_dcmd,
771 };
772
773
774 /**
775 * The following functions are defined for gen2 (deviceid : 0x78 0x79)
776 * controllers
777 */
778
779 /**
780 * megasas_enable_intr_gen2 - Enables interrupts
781 * @regs: MFI register set
782 */
783 static inline void
784 megasas_enable_intr_gen2(struct megasas_instance *instance)
785 {
786 struct megasas_register_set __iomem *regs;
787
788 regs = instance->reg_set;
789 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
790
791 /* write ~0x00000005 (4 & 1) to the intr mask*/
792 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
793
794 /* Dummy readl to force pci flush */
795 readl(&regs->outbound_intr_mask);
796 }
797
798 /**
799 * megasas_disable_intr_gen2 - Disables interrupt
800 * @regs: MFI register set
801 */
802 static inline void
803 megasas_disable_intr_gen2(struct megasas_instance *instance)
804 {
805 struct megasas_register_set __iomem *regs;
806 u32 mask = 0xFFFFFFFF;
807
808 regs = instance->reg_set;
809 writel(mask, &regs->outbound_intr_mask);
810 /* Dummy readl to force pci flush */
811 readl(&regs->outbound_intr_mask);
812 }
813
814 /**
815 * megasas_read_fw_status_reg_gen2 - returns the current FW status value
816 * @regs: MFI register set
817 */
818 static u32
819 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs)
820 {
821 return readl(&(regs)->outbound_scratch_pad);
822 }
823
824 /**
825 * megasas_clear_interrupt_gen2 - Check & clear interrupt
826 * @regs: MFI register set
827 */
828 static int
829 megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs)
830 {
831 u32 status;
832 u32 mfiStatus = 0;
833
834 /*
835 * Check if it is our interrupt
836 */
837 status = readl(&regs->outbound_intr_status);
838
839 if (status & MFI_INTR_FLAG_REPLY_MESSAGE) {
840 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
841 }
842 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
843 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
844 }
845
846 /*
847 * Clear the interrupt by writing back the same value
848 */
849 if (mfiStatus)
850 writel(status, &regs->outbound_doorbell_clear);
851
852 /* Dummy readl to force pci flush */
853 readl(&regs->outbound_intr_status);
854
855 return mfiStatus;
856 }
857 /**
858 * megasas_fire_cmd_gen2 - Sends command to the FW
859 * @frame_phys_addr : Physical address of cmd
860 * @frame_count : Number of frames for the command
861 * @regs : MFI register set
862 */
863 static inline void
864 megasas_fire_cmd_gen2(struct megasas_instance *instance,
865 dma_addr_t frame_phys_addr,
866 u32 frame_count,
867 struct megasas_register_set __iomem *regs)
868 {
869 unsigned long flags;
870
871 spin_lock_irqsave(&instance->hba_lock, flags);
872 writel((frame_phys_addr | (frame_count<<1))|1,
873 &(regs)->inbound_queue_port);
874 spin_unlock_irqrestore(&instance->hba_lock, flags);
875 }
876
877 /**
878 * megasas_adp_reset_gen2 - For controller reset
879 * @regs: MFI register set
880 */
881 static int
882 megasas_adp_reset_gen2(struct megasas_instance *instance,
883 struct megasas_register_set __iomem *reg_set)
884 {
885 u32 retry = 0 ;
886 u32 HostDiag;
887 u32 __iomem *seq_offset = &reg_set->seq_offset;
888 u32 __iomem *hostdiag_offset = &reg_set->host_diag;
889
890 if (instance->instancet == &megasas_instance_template_skinny) {
891 seq_offset = &reg_set->fusion_seq_offset;
892 hostdiag_offset = &reg_set->fusion_host_diag;
893 }
894
895 writel(0, seq_offset);
896 writel(4, seq_offset);
897 writel(0xb, seq_offset);
898 writel(2, seq_offset);
899 writel(7, seq_offset);
900 writel(0xd, seq_offset);
901
902 msleep(1000);
903
904 HostDiag = (u32)readl(hostdiag_offset);
905
906 while (!(HostDiag & DIAG_WRITE_ENABLE)) {
907 msleep(100);
908 HostDiag = (u32)readl(hostdiag_offset);
909 dev_notice(&instance->pdev->dev, "RESETGEN2: retry=%x, hostdiag=%x\n",
910 retry, HostDiag);
911
912 if (retry++ >= 100)
913 return 1;
914
915 }
916
917 dev_notice(&instance->pdev->dev, "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
918
919 writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset);
920
921 ssleep(10);
922
923 HostDiag = (u32)readl(hostdiag_offset);
924 while (HostDiag & DIAG_RESET_ADAPTER) {
925 msleep(100);
926 HostDiag = (u32)readl(hostdiag_offset);
927 dev_notice(&instance->pdev->dev, "RESET_GEN2: retry=%x, hostdiag=%x\n",
928 retry, HostDiag);
929
930 if (retry++ >= 1000)
931 return 1;
932
933 }
934 return 0;
935 }
936
937 /**
938 * megasas_check_reset_gen2 - For controller reset check
939 * @regs: MFI register set
940 */
941 static int
942 megasas_check_reset_gen2(struct megasas_instance *instance,
943 struct megasas_register_set __iomem *regs)
944 {
945 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
946 return 1;
947
948 return 0;
949 }
950
951 static struct megasas_instance_template megasas_instance_template_gen2 = {
952
953 .fire_cmd = megasas_fire_cmd_gen2,
954 .enable_intr = megasas_enable_intr_gen2,
955 .disable_intr = megasas_disable_intr_gen2,
956 .clear_intr = megasas_clear_intr_gen2,
957 .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
958 .adp_reset = megasas_adp_reset_gen2,
959 .check_reset = megasas_check_reset_gen2,
960 .service_isr = megasas_isr,
961 .tasklet = megasas_complete_cmd_dpc,
962 .init_adapter = megasas_init_adapter_mfi,
963 .build_and_issue_cmd = megasas_build_and_issue_cmd,
964 .issue_dcmd = megasas_issue_dcmd,
965 };
966
967 /**
968 * This is the end of set of functions & definitions
969 * specific to gen2 (deviceid : 0x78, 0x79) controllers
970 */
971
972 /*
973 * Template added for TB (Fusion)
974 */
975 extern struct megasas_instance_template megasas_instance_template_fusion;
976
977 /**
978 * megasas_issue_polled - Issues a polling command
979 * @instance: Adapter soft state
980 * @cmd: Command packet to be issued
981 *
982 * For polling, MFI requires the cmd_status to be set to MFI_STAT_INVALID_STATUS before posting.
983 */
984 int
985 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
986 {
987 struct megasas_header *frame_hdr = &cmd->frame->hdr;
988
989 frame_hdr->cmd_status = MFI_STAT_INVALID_STATUS;
990 frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
991
992 if ((atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) ||
993 (instance->instancet->issue_dcmd(instance, cmd))) {
994 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
995 __func__, __LINE__);
996 return DCMD_NOT_FIRED;
997 }
998
999 return wait_and_poll(instance, cmd, instance->requestorId ?
1000 MEGASAS_ROUTINE_WAIT_TIME_VF : MFI_IO_TIMEOUT_SECS);
1001 }
1002
1003 /**
1004 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds
1005 * @instance: Adapter soft state
1006 * @cmd: Command to be issued
1007 * @timeout: Timeout in seconds
1008 *
1009 * This function waits on an event for the command to be returned from ISR.
1010 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1011 * Used to issue ioctl commands.
1012 */
1013 int
1014 megasas_issue_blocked_cmd(struct megasas_instance *instance,
1015 struct megasas_cmd *cmd, int timeout)
1016 {
1017 int ret = 0;
1018 cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
1019
1020 if ((atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) ||
1021 (instance->instancet->issue_dcmd(instance, cmd))) {
1022 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1023 __func__, __LINE__);
1024 return DCMD_NOT_FIRED;
1025 }
1026
1027 if (timeout) {
1028 ret = wait_event_timeout(instance->int_cmd_wait_q,
1029 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS, timeout * HZ);
1030 if (!ret) {
1031 dev_err(&instance->pdev->dev, "Failed from %s %d DCMD Timed out\n",
1032 __func__, __LINE__);
1033 return DCMD_TIMEOUT;
1034 }
1035 } else
1036 wait_event(instance->int_cmd_wait_q,
1037 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS);
1038
1039 return (cmd->cmd_status_drv == MFI_STAT_OK) ?
1040 DCMD_SUCCESS : DCMD_FAILED;
1041 }
1042
1043 /**
1044 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd
1045 * @instance: Adapter soft state
1046 * @cmd_to_abort: Previously issued cmd to be aborted
1047 * @timeout: Timeout in seconds
1048 *
1049 * MFI firmware can abort previously issued AEN comamnd (automatic event
1050 * notification). The megasas_issue_blocked_abort_cmd() issues such abort
1051 * cmd and waits for return status.
1052 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1053 */
1054 static int
1055 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
1056 struct megasas_cmd *cmd_to_abort, int timeout)
1057 {
1058 struct megasas_cmd *cmd;
1059 struct megasas_abort_frame *abort_fr;
1060 int ret = 0;
1061
1062 cmd = megasas_get_cmd(instance);
1063
1064 if (!cmd)
1065 return -1;
1066
1067 abort_fr = &cmd->frame->abort;
1068
1069 /*
1070 * Prepare and issue the abort frame
1071 */
1072 abort_fr->cmd = MFI_CMD_ABORT;
1073 abort_fr->cmd_status = MFI_STAT_INVALID_STATUS;
1074 abort_fr->flags = cpu_to_le16(0);
1075 abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index);
1076 abort_fr->abort_mfi_phys_addr_lo =
1077 cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr));
1078 abort_fr->abort_mfi_phys_addr_hi =
1079 cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr));
1080
1081 cmd->sync_cmd = 1;
1082 cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
1083
1084 if ((atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) ||
1085 (instance->instancet->issue_dcmd(instance, cmd))) {
1086 dev_err(&instance->pdev->dev, "Failed from %s %d\n",
1087 __func__, __LINE__);
1088 return DCMD_NOT_FIRED;
1089 }
1090
1091 if (timeout) {
1092 ret = wait_event_timeout(instance->abort_cmd_wait_q,
1093 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS, timeout * HZ);
1094 if (!ret) {
1095 dev_err(&instance->pdev->dev, "Failed from %s %d Abort Timed out\n",
1096 __func__, __LINE__);
1097 return DCMD_TIMEOUT;
1098 }
1099 } else
1100 wait_event(instance->abort_cmd_wait_q,
1101 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS);
1102
1103 cmd->sync_cmd = 0;
1104
1105 megasas_return_cmd(instance, cmd);
1106 return (cmd->cmd_status_drv == MFI_STAT_OK) ?
1107 DCMD_SUCCESS : DCMD_FAILED;
1108 }
1109
1110 /**
1111 * megasas_make_sgl32 - Prepares 32-bit SGL
1112 * @instance: Adapter soft state
1113 * @scp: SCSI command from the mid-layer
1114 * @mfi_sgl: SGL to be filled in
1115 *
1116 * If successful, this function returns the number of SG elements. Otherwise,
1117 * it returnes -1.
1118 */
1119 static int
1120 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
1121 union megasas_sgl *mfi_sgl)
1122 {
1123 int i;
1124 int sge_count;
1125 struct scatterlist *os_sgl;
1126
1127 sge_count = scsi_dma_map(scp);
1128 BUG_ON(sge_count < 0);
1129
1130 if (sge_count) {
1131 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1132 mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1133 mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl));
1134 }
1135 }
1136 return sge_count;
1137 }
1138
1139 /**
1140 * megasas_make_sgl64 - Prepares 64-bit SGL
1141 * @instance: Adapter soft state
1142 * @scp: SCSI command from the mid-layer
1143 * @mfi_sgl: SGL to be filled in
1144 *
1145 * If successful, this function returns the number of SG elements. Otherwise,
1146 * it returnes -1.
1147 */
1148 static int
1149 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
1150 union megasas_sgl *mfi_sgl)
1151 {
1152 int i;
1153 int sge_count;
1154 struct scatterlist *os_sgl;
1155
1156 sge_count = scsi_dma_map(scp);
1157 BUG_ON(sge_count < 0);
1158
1159 if (sge_count) {
1160 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1161 mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1162 mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl));
1163 }
1164 }
1165 return sge_count;
1166 }
1167
1168 /**
1169 * megasas_make_sgl_skinny - Prepares IEEE SGL
1170 * @instance: Adapter soft state
1171 * @scp: SCSI command from the mid-layer
1172 * @mfi_sgl: SGL to be filled in
1173 *
1174 * If successful, this function returns the number of SG elements. Otherwise,
1175 * it returnes -1.
1176 */
1177 static int
1178 megasas_make_sgl_skinny(struct megasas_instance *instance,
1179 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
1180 {
1181 int i;
1182 int sge_count;
1183 struct scatterlist *os_sgl;
1184
1185 sge_count = scsi_dma_map(scp);
1186
1187 if (sge_count) {
1188 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1189 mfi_sgl->sge_skinny[i].length =
1190 cpu_to_le32(sg_dma_len(os_sgl));
1191 mfi_sgl->sge_skinny[i].phys_addr =
1192 cpu_to_le64(sg_dma_address(os_sgl));
1193 mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0);
1194 }
1195 }
1196 return sge_count;
1197 }
1198
1199 /**
1200 * megasas_get_frame_count - Computes the number of frames
1201 * @frame_type : type of frame- io or pthru frame
1202 * @sge_count : number of sg elements
1203 *
1204 * Returns the number of frames required for numnber of sge's (sge_count)
1205 */
1206
1207 static u32 megasas_get_frame_count(struct megasas_instance *instance,
1208 u8 sge_count, u8 frame_type)
1209 {
1210 int num_cnt;
1211 int sge_bytes;
1212 u32 sge_sz;
1213 u32 frame_count = 0;
1214
1215 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
1216 sizeof(struct megasas_sge32);
1217
1218 if (instance->flag_ieee) {
1219 sge_sz = sizeof(struct megasas_sge_skinny);
1220 }
1221
1222 /*
1223 * Main frame can contain 2 SGEs for 64-bit SGLs and
1224 * 3 SGEs for 32-bit SGLs for ldio &
1225 * 1 SGEs for 64-bit SGLs and
1226 * 2 SGEs for 32-bit SGLs for pthru frame
1227 */
1228 if (unlikely(frame_type == PTHRU_FRAME)) {
1229 if (instance->flag_ieee == 1) {
1230 num_cnt = sge_count - 1;
1231 } else if (IS_DMA64)
1232 num_cnt = sge_count - 1;
1233 else
1234 num_cnt = sge_count - 2;
1235 } else {
1236 if (instance->flag_ieee == 1) {
1237 num_cnt = sge_count - 1;
1238 } else if (IS_DMA64)
1239 num_cnt = sge_count - 2;
1240 else
1241 num_cnt = sge_count - 3;
1242 }
1243
1244 if (num_cnt > 0) {
1245 sge_bytes = sge_sz * num_cnt;
1246
1247 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
1248 ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
1249 }
1250 /* Main frame */
1251 frame_count += 1;
1252
1253 if (frame_count > 7)
1254 frame_count = 8;
1255 return frame_count;
1256 }
1257
1258 /**
1259 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
1260 * @instance: Adapter soft state
1261 * @scp: SCSI command
1262 * @cmd: Command to be prepared in
1263 *
1264 * This function prepares CDB commands. These are typcially pass-through
1265 * commands to the devices.
1266 */
1267 static int
1268 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
1269 struct megasas_cmd *cmd)
1270 {
1271 u32 is_logical;
1272 u32 device_id;
1273 u16 flags = 0;
1274 struct megasas_pthru_frame *pthru;
1275
1276 is_logical = MEGASAS_IS_LOGICAL(scp);
1277 device_id = MEGASAS_DEV_INDEX(scp);
1278 pthru = (struct megasas_pthru_frame *)cmd->frame;
1279
1280 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1281 flags = MFI_FRAME_DIR_WRITE;
1282 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1283 flags = MFI_FRAME_DIR_READ;
1284 else if (scp->sc_data_direction == PCI_DMA_NONE)
1285 flags = MFI_FRAME_DIR_NONE;
1286
1287 if (instance->flag_ieee == 1) {
1288 flags |= MFI_FRAME_IEEE;
1289 }
1290
1291 /*
1292 * Prepare the DCDB frame
1293 */
1294 pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
1295 pthru->cmd_status = 0x0;
1296 pthru->scsi_status = 0x0;
1297 pthru->target_id = device_id;
1298 pthru->lun = scp->device->lun;
1299 pthru->cdb_len = scp->cmd_len;
1300 pthru->timeout = 0;
1301 pthru->pad_0 = 0;
1302 pthru->flags = cpu_to_le16(flags);
1303 pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp));
1304
1305 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1306
1307 /*
1308 * If the command is for the tape device, set the
1309 * pthru timeout to the os layer timeout value.
1310 */
1311 if (scp->device->type == TYPE_TAPE) {
1312 if ((scp->request->timeout / HZ) > 0xFFFF)
1313 pthru->timeout = cpu_to_le16(0xFFFF);
1314 else
1315 pthru->timeout = cpu_to_le16(scp->request->timeout / HZ);
1316 }
1317
1318 /*
1319 * Construct SGL
1320 */
1321 if (instance->flag_ieee == 1) {
1322 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1323 pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
1324 &pthru->sgl);
1325 } else if (IS_DMA64) {
1326 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1327 pthru->sge_count = megasas_make_sgl64(instance, scp,
1328 &pthru->sgl);
1329 } else
1330 pthru->sge_count = megasas_make_sgl32(instance, scp,
1331 &pthru->sgl);
1332
1333 if (pthru->sge_count > instance->max_num_sge) {
1334 dev_err(&instance->pdev->dev, "DCDB too many SGE NUM=%x\n",
1335 pthru->sge_count);
1336 return 0;
1337 }
1338
1339 /*
1340 * Sense info specific
1341 */
1342 pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
1343 pthru->sense_buf_phys_addr_hi =
1344 cpu_to_le32(upper_32_bits(cmd->sense_phys_addr));
1345 pthru->sense_buf_phys_addr_lo =
1346 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
1347
1348 /*
1349 * Compute the total number of frames this command consumes. FW uses
1350 * this number to pull sufficient number of frames from host memory.
1351 */
1352 cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
1353 PTHRU_FRAME);
1354
1355 return cmd->frame_count;
1356 }
1357
1358 /**
1359 * megasas_build_ldio - Prepares IOs to logical devices
1360 * @instance: Adapter soft state
1361 * @scp: SCSI command
1362 * @cmd: Command to be prepared
1363 *
1364 * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1365 */
1366 static int
1367 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1368 struct megasas_cmd *cmd)
1369 {
1370 u32 device_id;
1371 u8 sc = scp->cmnd[0];
1372 u16 flags = 0;
1373 struct megasas_io_frame *ldio;
1374
1375 device_id = MEGASAS_DEV_INDEX(scp);
1376 ldio = (struct megasas_io_frame *)cmd->frame;
1377
1378 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1379 flags = MFI_FRAME_DIR_WRITE;
1380 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1381 flags = MFI_FRAME_DIR_READ;
1382
1383 if (instance->flag_ieee == 1) {
1384 flags |= MFI_FRAME_IEEE;
1385 }
1386
1387 /*
1388 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
1389 */
1390 ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
1391 ldio->cmd_status = 0x0;
1392 ldio->scsi_status = 0x0;
1393 ldio->target_id = device_id;
1394 ldio->timeout = 0;
1395 ldio->reserved_0 = 0;
1396 ldio->pad_0 = 0;
1397 ldio->flags = cpu_to_le16(flags);
1398 ldio->start_lba_hi = 0;
1399 ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
1400
1401 /*
1402 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1403 */
1404 if (scp->cmd_len == 6) {
1405 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]);
1406 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) |
1407 ((u32) scp->cmnd[2] << 8) |
1408 (u32) scp->cmnd[3]);
1409
1410 ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF);
1411 }
1412
1413 /*
1414 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1415 */
1416 else if (scp->cmd_len == 10) {
1417 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] |
1418 ((u32) scp->cmnd[7] << 8));
1419 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1420 ((u32) scp->cmnd[3] << 16) |
1421 ((u32) scp->cmnd[4] << 8) |
1422 (u32) scp->cmnd[5]);
1423 }
1424
1425 /*
1426 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1427 */
1428 else if (scp->cmd_len == 12) {
1429 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1430 ((u32) scp->cmnd[7] << 16) |
1431 ((u32) scp->cmnd[8] << 8) |
1432 (u32) scp->cmnd[9]);
1433
1434 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1435 ((u32) scp->cmnd[3] << 16) |
1436 ((u32) scp->cmnd[4] << 8) |
1437 (u32) scp->cmnd[5]);
1438 }
1439
1440 /*
1441 * 16-byte READ(0x88) or WRITE(0x8A) cdb
1442 */
1443 else if (scp->cmd_len == 16) {
1444 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) |
1445 ((u32) scp->cmnd[11] << 16) |
1446 ((u32) scp->cmnd[12] << 8) |
1447 (u32) scp->cmnd[13]);
1448
1449 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1450 ((u32) scp->cmnd[7] << 16) |
1451 ((u32) scp->cmnd[8] << 8) |
1452 (u32) scp->cmnd[9]);
1453
1454 ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1455 ((u32) scp->cmnd[3] << 16) |
1456 ((u32) scp->cmnd[4] << 8) |
1457 (u32) scp->cmnd[5]);
1458
1459 }
1460
1461 /*
1462 * Construct SGL
1463 */
1464 if (instance->flag_ieee) {
1465 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1466 ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
1467 &ldio->sgl);
1468 } else if (IS_DMA64) {
1469 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1470 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
1471 } else
1472 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
1473
1474 if (ldio->sge_count > instance->max_num_sge) {
1475 dev_err(&instance->pdev->dev, "build_ld_io: sge_count = %x\n",
1476 ldio->sge_count);
1477 return 0;
1478 }
1479
1480 /*
1481 * Sense info specific
1482 */
1483 ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
1484 ldio->sense_buf_phys_addr_hi = 0;
1485 ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr);
1486
1487 /*
1488 * Compute the total number of frames this command consumes. FW uses
1489 * this number to pull sufficient number of frames from host memory.
1490 */
1491 cmd->frame_count = megasas_get_frame_count(instance,
1492 ldio->sge_count, IO_FRAME);
1493
1494 return cmd->frame_count;
1495 }
1496
1497 /**
1498 * megasas_cmd_type - Checks if the cmd is for logical drive/sysPD
1499 * and whether it's RW or non RW
1500 * @scmd: SCSI command
1501 *
1502 */
1503 inline int megasas_cmd_type(struct scsi_cmnd *cmd)
1504 {
1505 int ret;
1506
1507 switch (cmd->cmnd[0]) {
1508 case READ_10:
1509 case WRITE_10:
1510 case READ_12:
1511 case WRITE_12:
1512 case READ_6:
1513 case WRITE_6:
1514 case READ_16:
1515 case WRITE_16:
1516 ret = (MEGASAS_IS_LOGICAL(cmd)) ?
1517 READ_WRITE_LDIO : READ_WRITE_SYSPDIO;
1518 break;
1519 default:
1520 ret = (MEGASAS_IS_LOGICAL(cmd)) ?
1521 NON_READ_WRITE_LDIO : NON_READ_WRITE_SYSPDIO;
1522 }
1523 return ret;
1524 }
1525
1526 /**
1527 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds
1528 * in FW
1529 * @instance: Adapter soft state
1530 */
1531 static inline void
1532 megasas_dump_pending_frames(struct megasas_instance *instance)
1533 {
1534 struct megasas_cmd *cmd;
1535 int i,n;
1536 union megasas_sgl *mfi_sgl;
1537 struct megasas_io_frame *ldio;
1538 struct megasas_pthru_frame *pthru;
1539 u32 sgcount;
1540 u32 max_cmd = instance->max_fw_cmds;
1541
1542 dev_err(&instance->pdev->dev, "[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
1543 dev_err(&instance->pdev->dev, "[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1544 if (IS_DMA64)
1545 dev_err(&instance->pdev->dev, "[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1546 else
1547 dev_err(&instance->pdev->dev, "[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1548
1549 dev_err(&instance->pdev->dev, "[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1550 for (i = 0; i < max_cmd; i++) {
1551 cmd = instance->cmd_list[i];
1552 if (!cmd->scmd)
1553 continue;
1554 dev_err(&instance->pdev->dev, "[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
1555 if (megasas_cmd_type(cmd->scmd) == READ_WRITE_LDIO) {
1556 ldio = (struct megasas_io_frame *)cmd->frame;
1557 mfi_sgl = &ldio->sgl;
1558 sgcount = ldio->sge_count;
1559 dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x,"
1560 " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1561 instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id,
1562 le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi),
1563 le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount);
1564 } else {
1565 pthru = (struct megasas_pthru_frame *) cmd->frame;
1566 mfi_sgl = &pthru->sgl;
1567 sgcount = pthru->sge_count;
1568 dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, "
1569 "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1570 instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id,
1571 pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len),
1572 le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount);
1573 }
1574 if (megasas_dbg_lvl & MEGASAS_DBG_LVL) {
1575 for (n = 0; n < sgcount; n++) {
1576 if (IS_DMA64)
1577 dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%llx\n",
1578 le32_to_cpu(mfi_sgl->sge64[n].length),
1579 le64_to_cpu(mfi_sgl->sge64[n].phys_addr));
1580 else
1581 dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%x\n",
1582 le32_to_cpu(mfi_sgl->sge32[n].length),
1583 le32_to_cpu(mfi_sgl->sge32[n].phys_addr));
1584 }
1585 }
1586 } /*for max_cmd*/
1587 dev_err(&instance->pdev->dev, "[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1588 for (i = 0; i < max_cmd; i++) {
1589
1590 cmd = instance->cmd_list[i];
1591
1592 if (cmd->sync_cmd == 1)
1593 dev_err(&instance->pdev->dev, "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1594 }
1595 dev_err(&instance->pdev->dev, "[%d]: Dumping Done\n\n",instance->host->host_no);
1596 }
1597
1598 u32
1599 megasas_build_and_issue_cmd(struct megasas_instance *instance,
1600 struct scsi_cmnd *scmd)
1601 {
1602 struct megasas_cmd *cmd;
1603 u32 frame_count;
1604
1605 cmd = megasas_get_cmd(instance);
1606 if (!cmd)
1607 return SCSI_MLQUEUE_HOST_BUSY;
1608
1609 /*
1610 * Logical drive command
1611 */
1612 if (megasas_cmd_type(scmd) == READ_WRITE_LDIO)
1613 frame_count = megasas_build_ldio(instance, scmd, cmd);
1614 else
1615 frame_count = megasas_build_dcdb(instance, scmd, cmd);
1616
1617 if (!frame_count)
1618 goto out_return_cmd;
1619
1620 cmd->scmd = scmd;
1621 scmd->SCp.ptr = (char *)cmd;
1622
1623 /*
1624 * Issue the command to the FW
1625 */
1626 atomic_inc(&instance->fw_outstanding);
1627
1628 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
1629 cmd->frame_count-1, instance->reg_set);
1630
1631 return 0;
1632 out_return_cmd:
1633 megasas_return_cmd(instance, cmd);
1634 return SCSI_MLQUEUE_HOST_BUSY;
1635 }
1636
1637
1638 /**
1639 * megasas_queue_command - Queue entry point
1640 * @scmd: SCSI command to be queued
1641 * @done: Callback entry point
1642 */
1643 static int
1644 megasas_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
1645 {
1646 struct megasas_instance *instance;
1647 struct MR_PRIV_DEVICE *mr_device_priv_data;
1648
1649 instance = (struct megasas_instance *)
1650 scmd->device->host->hostdata;
1651
1652 if (instance->unload == 1) {
1653 scmd->result = DID_NO_CONNECT << 16;
1654 scmd->scsi_done(scmd);
1655 return 0;
1656 }
1657
1658 if (instance->issuepend_done == 0)
1659 return SCSI_MLQUEUE_HOST_BUSY;
1660
1661
1662 /* Check for an mpio path and adjust behavior */
1663 if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
1664 if (megasas_check_mpio_paths(instance, scmd) ==
1665 (DID_RESET << 16)) {
1666 return SCSI_MLQUEUE_HOST_BUSY;
1667 } else {
1668 scmd->result = DID_NO_CONNECT << 16;
1669 scmd->scsi_done(scmd);
1670 return 0;
1671 }
1672 }
1673
1674 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
1675 scmd->result = DID_NO_CONNECT << 16;
1676 scmd->scsi_done(scmd);
1677 return 0;
1678 }
1679
1680 mr_device_priv_data = scmd->device->hostdata;
1681 if (!mr_device_priv_data) {
1682 scmd->result = DID_NO_CONNECT << 16;
1683 scmd->scsi_done(scmd);
1684 return 0;
1685 }
1686
1687 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL)
1688 return SCSI_MLQUEUE_HOST_BUSY;
1689
1690 if (mr_device_priv_data->tm_busy)
1691 return SCSI_MLQUEUE_DEVICE_BUSY;
1692
1693
1694 scmd->result = 0;
1695
1696 if (MEGASAS_IS_LOGICAL(scmd) &&
1697 (scmd->device->id >= instance->fw_supported_vd_count ||
1698 scmd->device->lun)) {
1699 scmd->result = DID_BAD_TARGET << 16;
1700 goto out_done;
1701 }
1702
1703 /*
1704 * FW takes care of flush cache on its own for Virtual Disk.
1705 * No need to send it down for VD. For JBOD send SYNCHRONIZE_CACHE to FW.
1706 */
1707 if ((scmd->cmnd[0] == SYNCHRONIZE_CACHE) && MEGASAS_IS_LOGICAL(scmd)) {
1708 scmd->result = DID_OK << 16;
1709 goto out_done;
1710 }
1711
1712 return instance->instancet->build_and_issue_cmd(instance, scmd);
1713
1714 out_done:
1715 scmd->scsi_done(scmd);
1716 return 0;
1717 }
1718
1719 static struct megasas_instance *megasas_lookup_instance(u16 host_no)
1720 {
1721 int i;
1722
1723 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
1724
1725 if ((megasas_mgmt_info.instance[i]) &&
1726 (megasas_mgmt_info.instance[i]->host->host_no == host_no))
1727 return megasas_mgmt_info.instance[i];
1728 }
1729
1730 return NULL;
1731 }
1732
1733 /*
1734 * megasas_update_sdev_properties - Update sdev structure based on controller's FW capabilities
1735 *
1736 * @sdev: OS provided scsi device
1737 *
1738 * Returns void
1739 */
1740 void megasas_update_sdev_properties(struct scsi_device *sdev)
1741 {
1742 u16 pd_index = 0;
1743 u32 device_id, ld;
1744 struct megasas_instance *instance;
1745 struct fusion_context *fusion;
1746 struct MR_PRIV_DEVICE *mr_device_priv_data;
1747 struct MR_PD_CFG_SEQ_NUM_SYNC *pd_sync;
1748 struct MR_LD_RAID *raid;
1749 struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
1750
1751 instance = megasas_lookup_instance(sdev->host->host_no);
1752 fusion = instance->ctrl_context;
1753 mr_device_priv_data = sdev->hostdata;
1754
1755 if (!fusion)
1756 return;
1757
1758 if (sdev->channel < MEGASAS_MAX_PD_CHANNELS &&
1759 instance->use_seqnum_jbod_fp) {
1760 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1761 sdev->id;
1762 pd_sync = (void *)fusion->pd_seq_sync
1763 [(instance->pd_seq_map_id - 1) & 1];
1764 mr_device_priv_data->is_tm_capable =
1765 pd_sync->seq[pd_index].capability.tmCapable;
1766 } else {
1767 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL)
1768 + sdev->id;
1769 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
1770 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
1771 raid = MR_LdRaidGet(ld, local_map_ptr);
1772
1773 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER)
1774 blk_queue_update_dma_alignment(sdev->request_queue, 0x7);
1775 mr_device_priv_data->is_tm_capable =
1776 raid->capability.tmCapable;
1777 }
1778 }
1779
1780 static void megasas_set_device_queue_depth(struct scsi_device *sdev)
1781 {
1782 u16 pd_index = 0;
1783 int ret = DCMD_FAILED;
1784 struct megasas_instance *instance;
1785
1786 instance = megasas_lookup_instance(sdev->host->host_no);
1787
1788 if (sdev->channel < MEGASAS_MAX_PD_CHANNELS) {
1789 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) + sdev->id;
1790
1791 if (instance->pd_info) {
1792 mutex_lock(&instance->hba_mutex);
1793 ret = megasas_get_pd_info(instance, pd_index);
1794 mutex_unlock(&instance->hba_mutex);
1795 }
1796
1797 if (ret != DCMD_SUCCESS)
1798 return;
1799
1800 if (instance->pd_list[pd_index].driveState == MR_PD_STATE_SYSTEM) {
1801
1802 switch (instance->pd_list[pd_index].interface) {
1803 case SAS_PD:
1804 scsi_change_queue_depth(sdev, MEGASAS_SAS_QD);
1805 break;
1806
1807 case SATA_PD:
1808 scsi_change_queue_depth(sdev, MEGASAS_SATA_QD);
1809 break;
1810
1811 default:
1812 scsi_change_queue_depth(sdev, MEGASAS_DEFAULT_PD_QD);
1813 }
1814 }
1815 }
1816 }
1817
1818
1819 static int megasas_slave_configure(struct scsi_device *sdev)
1820 {
1821 u16 pd_index = 0;
1822 struct megasas_instance *instance;
1823
1824 instance = megasas_lookup_instance(sdev->host->host_no);
1825 if (instance->pd_list_not_supported) {
1826 if (sdev->channel < MEGASAS_MAX_PD_CHANNELS &&
1827 sdev->type == TYPE_DISK) {
1828 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1829 sdev->id;
1830 if (instance->pd_list[pd_index].driveState !=
1831 MR_PD_STATE_SYSTEM)
1832 return -ENXIO;
1833 }
1834 }
1835 megasas_set_device_queue_depth(sdev);
1836 megasas_update_sdev_properties(sdev);
1837
1838 /*
1839 * The RAID firmware may require extended timeouts.
1840 */
1841 blk_queue_rq_timeout(sdev->request_queue,
1842 scmd_timeout * HZ);
1843
1844 return 0;
1845 }
1846
1847 static int megasas_slave_alloc(struct scsi_device *sdev)
1848 {
1849 u16 pd_index = 0;
1850 struct megasas_instance *instance ;
1851 struct MR_PRIV_DEVICE *mr_device_priv_data;
1852
1853 instance = megasas_lookup_instance(sdev->host->host_no);
1854 if (sdev->channel < MEGASAS_MAX_PD_CHANNELS) {
1855 /*
1856 * Open the OS scan to the SYSTEM PD
1857 */
1858 pd_index =
1859 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1860 sdev->id;
1861 if ((instance->pd_list_not_supported ||
1862 instance->pd_list[pd_index].driveState ==
1863 MR_PD_STATE_SYSTEM)) {
1864 goto scan_target;
1865 }
1866 return -ENXIO;
1867 }
1868
1869 scan_target:
1870 mr_device_priv_data = kzalloc(sizeof(*mr_device_priv_data),
1871 GFP_KERNEL);
1872 if (!mr_device_priv_data)
1873 return -ENOMEM;
1874 sdev->hostdata = mr_device_priv_data;
1875 return 0;
1876 }
1877
1878 static void megasas_slave_destroy(struct scsi_device *sdev)
1879 {
1880 kfree(sdev->hostdata);
1881 sdev->hostdata = NULL;
1882 }
1883
1884 /*
1885 * megasas_complete_outstanding_ioctls - Complete outstanding ioctls after a
1886 * kill adapter
1887 * @instance: Adapter soft state
1888 *
1889 */
1890 static void megasas_complete_outstanding_ioctls(struct megasas_instance *instance)
1891 {
1892 int i;
1893 struct megasas_cmd *cmd_mfi;
1894 struct megasas_cmd_fusion *cmd_fusion;
1895 struct fusion_context *fusion = instance->ctrl_context;
1896
1897 /* Find all outstanding ioctls */
1898 if (fusion) {
1899 for (i = 0; i < instance->max_fw_cmds; i++) {
1900 cmd_fusion = fusion->cmd_list[i];
1901 if (cmd_fusion->sync_cmd_idx != (u32)ULONG_MAX) {
1902 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
1903 if (cmd_mfi->sync_cmd &&
1904 (cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT)) {
1905 cmd_mfi->frame->hdr.cmd_status =
1906 MFI_STAT_WRONG_STATE;
1907 megasas_complete_cmd(instance,
1908 cmd_mfi, DID_OK);
1909 }
1910 }
1911 }
1912 } else {
1913 for (i = 0; i < instance->max_fw_cmds; i++) {
1914 cmd_mfi = instance->cmd_list[i];
1915 if (cmd_mfi->sync_cmd && cmd_mfi->frame->hdr.cmd !=
1916 MFI_CMD_ABORT)
1917 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
1918 }
1919 }
1920 }
1921
1922
1923 void megaraid_sas_kill_hba(struct megasas_instance *instance)
1924 {
1925 /* Set critical error to block I/O & ioctls in case caller didn't */
1926 atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
1927 /* Wait 1 second to ensure IO or ioctls in build have posted */
1928 msleep(1000);
1929 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
1930 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
1931 (instance->ctrl_context)) {
1932 writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
1933 /* Flush */
1934 readl(&instance->reg_set->doorbell);
1935 if (instance->requestorId && instance->peerIsPresent)
1936 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
1937 } else {
1938 writel(MFI_STOP_ADP,
1939 &instance->reg_set->inbound_doorbell);
1940 }
1941 /* Complete outstanding ioctls when adapter is killed */
1942 megasas_complete_outstanding_ioctls(instance);
1943 }
1944
1945 /**
1946 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
1947 * restored to max value
1948 * @instance: Adapter soft state
1949 *
1950 */
1951 void
1952 megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
1953 {
1954 unsigned long flags;
1955
1956 if (instance->flag & MEGASAS_FW_BUSY
1957 && time_after(jiffies, instance->last_time + 5 * HZ)
1958 && atomic_read(&instance->fw_outstanding) <
1959 instance->throttlequeuedepth + 1) {
1960
1961 spin_lock_irqsave(instance->host->host_lock, flags);
1962 instance->flag &= ~MEGASAS_FW_BUSY;
1963
1964 instance->host->can_queue = instance->cur_can_queue;
1965 spin_unlock_irqrestore(instance->host->host_lock, flags);
1966 }
1967 }
1968
1969 /**
1970 * megasas_complete_cmd_dpc - Returns FW's controller structure
1971 * @instance_addr: Address of adapter soft state
1972 *
1973 * Tasklet to complete cmds
1974 */
1975 static void megasas_complete_cmd_dpc(unsigned long instance_addr)
1976 {
1977 u32 producer;
1978 u32 consumer;
1979 u32 context;
1980 struct megasas_cmd *cmd;
1981 struct megasas_instance *instance =
1982 (struct megasas_instance *)instance_addr;
1983 unsigned long flags;
1984
1985 /* If we have already declared adapter dead, donot complete cmds */
1986 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
1987 return;
1988
1989 spin_lock_irqsave(&instance->completion_lock, flags);
1990
1991 producer = le32_to_cpu(*instance->producer);
1992 consumer = le32_to_cpu(*instance->consumer);
1993
1994 while (consumer != producer) {
1995 context = le32_to_cpu(instance->reply_queue[consumer]);
1996 if (context >= instance->max_fw_cmds) {
1997 dev_err(&instance->pdev->dev, "Unexpected context value %x\n",
1998 context);
1999 BUG();
2000 }
2001
2002 cmd = instance->cmd_list[context];
2003
2004 megasas_complete_cmd(instance, cmd, DID_OK);
2005
2006 consumer++;
2007 if (consumer == (instance->max_fw_cmds + 1)) {
2008 consumer = 0;
2009 }
2010 }
2011
2012 *instance->consumer = cpu_to_le32(producer);
2013
2014 spin_unlock_irqrestore(&instance->completion_lock, flags);
2015
2016 /*
2017 * Check if we can restore can_queue
2018 */
2019 megasas_check_and_restore_queue_depth(instance);
2020 }
2021
2022 /**
2023 * megasas_start_timer - Initializes a timer object
2024 * @instance: Adapter soft state
2025 * @timer: timer object to be initialized
2026 * @fn: timer function
2027 * @interval: time interval between timer function call
2028 *
2029 */
2030 void megasas_start_timer(struct megasas_instance *instance,
2031 struct timer_list *timer,
2032 void *fn, unsigned long interval)
2033 {
2034 init_timer(timer);
2035 timer->expires = jiffies + interval;
2036 timer->data = (unsigned long)instance;
2037 timer->function = fn;
2038 add_timer(timer);
2039 }
2040
2041 static void
2042 megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
2043
2044 static void
2045 process_fw_state_change_wq(struct work_struct *work);
2046
2047 void megasas_do_ocr(struct megasas_instance *instance)
2048 {
2049 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
2050 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
2051 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
2052 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
2053 }
2054 instance->instancet->disable_intr(instance);
2055 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
2056 instance->issuepend_done = 0;
2057
2058 atomic_set(&instance->fw_outstanding, 0);
2059 megasas_internal_reset_defer_cmds(instance);
2060 process_fw_state_change_wq(&instance->work_init);
2061 }
2062
2063 static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance,
2064 int initial)
2065 {
2066 struct megasas_cmd *cmd;
2067 struct megasas_dcmd_frame *dcmd;
2068 struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL;
2069 dma_addr_t new_affiliation_111_h;
2070 int ld, retval = 0;
2071 u8 thisVf;
2072
2073 cmd = megasas_get_cmd(instance);
2074
2075 if (!cmd) {
2076 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation_111:"
2077 "Failed to get cmd for scsi%d\n",
2078 instance->host->host_no);
2079 return -ENOMEM;
2080 }
2081
2082 dcmd = &cmd->frame->dcmd;
2083
2084 if (!instance->vf_affiliation_111) {
2085 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2086 "affiliation for scsi%d\n", instance->host->host_no);
2087 megasas_return_cmd(instance, cmd);
2088 return -ENOMEM;
2089 }
2090
2091 if (initial)
2092 memset(instance->vf_affiliation_111, 0,
2093 sizeof(struct MR_LD_VF_AFFILIATION_111));
2094 else {
2095 new_affiliation_111 =
2096 pci_alloc_consistent(instance->pdev,
2097 sizeof(struct MR_LD_VF_AFFILIATION_111),
2098 &new_affiliation_111_h);
2099 if (!new_affiliation_111) {
2100 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2101 "memory for new affiliation for scsi%d\n",
2102 instance->host->host_no);
2103 megasas_return_cmd(instance, cmd);
2104 return -ENOMEM;
2105 }
2106 memset(new_affiliation_111, 0,
2107 sizeof(struct MR_LD_VF_AFFILIATION_111));
2108 }
2109
2110 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2111
2112 dcmd->cmd = MFI_CMD_DCMD;
2113 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2114 dcmd->sge_count = 1;
2115 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2116 dcmd->timeout = 0;
2117 dcmd->pad_0 = 0;
2118 dcmd->data_xfer_len =
2119 cpu_to_le32(sizeof(struct MR_LD_VF_AFFILIATION_111));
2120 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111);
2121
2122 if (initial)
2123 dcmd->sgl.sge32[0].phys_addr =
2124 cpu_to_le32(instance->vf_affiliation_111_h);
2125 else
2126 dcmd->sgl.sge32[0].phys_addr =
2127 cpu_to_le32(new_affiliation_111_h);
2128
2129 dcmd->sgl.sge32[0].length = cpu_to_le32(
2130 sizeof(struct MR_LD_VF_AFFILIATION_111));
2131
2132 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2133 "scsi%d\n", instance->host->host_no);
2134
2135 if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2136 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2137 " failed with status 0x%x for scsi%d\n",
2138 dcmd->cmd_status, instance->host->host_no);
2139 retval = 1; /* Do a scan if we couldn't get affiliation */
2140 goto out;
2141 }
2142
2143 if (!initial) {
2144 thisVf = new_affiliation_111->thisVf;
2145 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++)
2146 if (instance->vf_affiliation_111->map[ld].policy[thisVf] !=
2147 new_affiliation_111->map[ld].policy[thisVf]) {
2148 dev_warn(&instance->pdev->dev, "SR-IOV: "
2149 "Got new LD/VF affiliation for scsi%d\n",
2150 instance->host->host_no);
2151 memcpy(instance->vf_affiliation_111,
2152 new_affiliation_111,
2153 sizeof(struct MR_LD_VF_AFFILIATION_111));
2154 retval = 1;
2155 goto out;
2156 }
2157 }
2158 out:
2159 if (new_affiliation_111) {
2160 pci_free_consistent(instance->pdev,
2161 sizeof(struct MR_LD_VF_AFFILIATION_111),
2162 new_affiliation_111,
2163 new_affiliation_111_h);
2164 }
2165
2166 megasas_return_cmd(instance, cmd);
2167
2168 return retval;
2169 }
2170
2171 static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance,
2172 int initial)
2173 {
2174 struct megasas_cmd *cmd;
2175 struct megasas_dcmd_frame *dcmd;
2176 struct MR_LD_VF_AFFILIATION *new_affiliation = NULL;
2177 struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL;
2178 dma_addr_t new_affiliation_h;
2179 int i, j, retval = 0, found = 0, doscan = 0;
2180 u8 thisVf;
2181
2182 cmd = megasas_get_cmd(instance);
2183
2184 if (!cmd) {
2185 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation12: "
2186 "Failed to get cmd for scsi%d\n",
2187 instance->host->host_no);
2188 return -ENOMEM;
2189 }
2190
2191 dcmd = &cmd->frame->dcmd;
2192
2193 if (!instance->vf_affiliation) {
2194 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2195 "affiliation for scsi%d\n", instance->host->host_no);
2196 megasas_return_cmd(instance, cmd);
2197 return -ENOMEM;
2198 }
2199
2200 if (initial)
2201 memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
2202 sizeof(struct MR_LD_VF_AFFILIATION));
2203 else {
2204 new_affiliation =
2205 pci_alloc_consistent(instance->pdev,
2206 (MAX_LOGICAL_DRIVES + 1) *
2207 sizeof(struct MR_LD_VF_AFFILIATION),
2208 &new_affiliation_h);
2209 if (!new_affiliation) {
2210 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2211 "memory for new affiliation for scsi%d\n",
2212 instance->host->host_no);
2213 megasas_return_cmd(instance, cmd);
2214 return -ENOMEM;
2215 }
2216 memset(new_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
2217 sizeof(struct MR_LD_VF_AFFILIATION));
2218 }
2219
2220 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2221
2222 dcmd->cmd = MFI_CMD_DCMD;
2223 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2224 dcmd->sge_count = 1;
2225 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2226 dcmd->timeout = 0;
2227 dcmd->pad_0 = 0;
2228 dcmd->data_xfer_len = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2229 sizeof(struct MR_LD_VF_AFFILIATION));
2230 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS);
2231
2232 if (initial)
2233 dcmd->sgl.sge32[0].phys_addr =
2234 cpu_to_le32(instance->vf_affiliation_h);
2235 else
2236 dcmd->sgl.sge32[0].phys_addr =
2237 cpu_to_le32(new_affiliation_h);
2238
2239 dcmd->sgl.sge32[0].length = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2240 sizeof(struct MR_LD_VF_AFFILIATION));
2241
2242 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2243 "scsi%d\n", instance->host->host_no);
2244
2245
2246 if (megasas_issue_blocked_cmd(instance, cmd, 0) != DCMD_SUCCESS) {
2247 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2248 " failed with status 0x%x for scsi%d\n",
2249 dcmd->cmd_status, instance->host->host_no);
2250 retval = 1; /* Do a scan if we couldn't get affiliation */
2251 goto out;
2252 }
2253
2254 if (!initial) {
2255 if (!new_affiliation->ldCount) {
2256 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2257 "affiliation for passive path for scsi%d\n",
2258 instance->host->host_no);
2259 retval = 1;
2260 goto out;
2261 }
2262 newmap = new_affiliation->map;
2263 savedmap = instance->vf_affiliation->map;
2264 thisVf = new_affiliation->thisVf;
2265 for (i = 0 ; i < new_affiliation->ldCount; i++) {
2266 found = 0;
2267 for (j = 0; j < instance->vf_affiliation->ldCount;
2268 j++) {
2269 if (newmap->ref.targetId ==
2270 savedmap->ref.targetId) {
2271 found = 1;
2272 if (newmap->policy[thisVf] !=
2273 savedmap->policy[thisVf]) {
2274 doscan = 1;
2275 goto out;
2276 }
2277 }
2278 savedmap = (struct MR_LD_VF_MAP *)
2279 ((unsigned char *)savedmap +
2280 savedmap->size);
2281 }
2282 if (!found && newmap->policy[thisVf] !=
2283 MR_LD_ACCESS_HIDDEN) {
2284 doscan = 1;
2285 goto out;
2286 }
2287 newmap = (struct MR_LD_VF_MAP *)
2288 ((unsigned char *)newmap + newmap->size);
2289 }
2290
2291 newmap = new_affiliation->map;
2292 savedmap = instance->vf_affiliation->map;
2293
2294 for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) {
2295 found = 0;
2296 for (j = 0 ; j < new_affiliation->ldCount; j++) {
2297 if (savedmap->ref.targetId ==
2298 newmap->ref.targetId) {
2299 found = 1;
2300 if (savedmap->policy[thisVf] !=
2301 newmap->policy[thisVf]) {
2302 doscan = 1;
2303 goto out;
2304 }
2305 }
2306 newmap = (struct MR_LD_VF_MAP *)
2307 ((unsigned char *)newmap +
2308 newmap->size);
2309 }
2310 if (!found && savedmap->policy[thisVf] !=
2311 MR_LD_ACCESS_HIDDEN) {
2312 doscan = 1;
2313 goto out;
2314 }
2315 savedmap = (struct MR_LD_VF_MAP *)
2316 ((unsigned char *)savedmap +
2317 savedmap->size);
2318 }
2319 }
2320 out:
2321 if (doscan) {
2322 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2323 "affiliation for scsi%d\n", instance->host->host_no);
2324 memcpy(instance->vf_affiliation, new_affiliation,
2325 new_affiliation->size);
2326 retval = 1;
2327 }
2328
2329 if (new_affiliation)
2330 pci_free_consistent(instance->pdev,
2331 (MAX_LOGICAL_DRIVES + 1) *
2332 sizeof(struct MR_LD_VF_AFFILIATION),
2333 new_affiliation, new_affiliation_h);
2334 megasas_return_cmd(instance, cmd);
2335
2336 return retval;
2337 }
2338
2339 /* This function will get the current SR-IOV LD/VF affiliation */
2340 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
2341 int initial)
2342 {
2343 int retval;
2344
2345 if (instance->PlasmaFW111)
2346 retval = megasas_get_ld_vf_affiliation_111(instance, initial);
2347 else
2348 retval = megasas_get_ld_vf_affiliation_12(instance, initial);
2349 return retval;
2350 }
2351
2352 /* This function will tell FW to start the SR-IOV heartbeat */
2353 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
2354 int initial)
2355 {
2356 struct megasas_cmd *cmd;
2357 struct megasas_dcmd_frame *dcmd;
2358 int retval = 0;
2359
2360 cmd = megasas_get_cmd(instance);
2361
2362 if (!cmd) {
2363 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_sriov_start_heartbeat: "
2364 "Failed to get cmd for scsi%d\n",
2365 instance->host->host_no);
2366 return -ENOMEM;
2367 }
2368
2369 dcmd = &cmd->frame->dcmd;
2370
2371 if (initial) {
2372 instance->hb_host_mem =
2373 pci_zalloc_consistent(instance->pdev,
2374 sizeof(struct MR_CTRL_HB_HOST_MEM),
2375 &instance->hb_host_mem_h);
2376 if (!instance->hb_host_mem) {
2377 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate"
2378 " memory for heartbeat host memory for scsi%d\n",
2379 instance->host->host_no);
2380 retval = -ENOMEM;
2381 goto out;
2382 }
2383 }
2384
2385 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2386
2387 dcmd->mbox.s[0] = cpu_to_le16(sizeof(struct MR_CTRL_HB_HOST_MEM));
2388 dcmd->cmd = MFI_CMD_DCMD;
2389 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2390 dcmd->sge_count = 1;
2391 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2392 dcmd->timeout = 0;
2393 dcmd->pad_0 = 0;
2394 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM));
2395 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC);
2396 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->hb_host_mem_h);
2397 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM));
2398
2399 dev_warn(&instance->pdev->dev, "SR-IOV: Starting heartbeat for scsi%d\n",
2400 instance->host->host_no);
2401
2402 if (instance->ctrl_context && !instance->mask_interrupts)
2403 retval = megasas_issue_blocked_cmd(instance, cmd,
2404 MEGASAS_ROUTINE_WAIT_TIME_VF);
2405 else
2406 retval = megasas_issue_polled(instance, cmd);
2407
2408 if (retval) {
2409 dev_warn(&instance->pdev->dev, "SR-IOV: MR_DCMD_CTRL_SHARED_HOST"
2410 "_MEM_ALLOC DCMD %s for scsi%d\n",
2411 (dcmd->cmd_status == MFI_STAT_INVALID_STATUS) ?
2412 "timed out" : "failed", instance->host->host_no);
2413 retval = 1;
2414 }
2415
2416 out:
2417 megasas_return_cmd(instance, cmd);
2418
2419 return retval;
2420 }
2421
2422 /* Handler for SR-IOV heartbeat */
2423 void megasas_sriov_heartbeat_handler(unsigned long instance_addr)
2424 {
2425 struct megasas_instance *instance =
2426 (struct megasas_instance *)instance_addr;
2427
2428 if (instance->hb_host_mem->HB.fwCounter !=
2429 instance->hb_host_mem->HB.driverCounter) {
2430 instance->hb_host_mem->HB.driverCounter =
2431 instance->hb_host_mem->HB.fwCounter;
2432 mod_timer(&instance->sriov_heartbeat_timer,
2433 jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
2434 } else {
2435 dev_warn(&instance->pdev->dev, "SR-IOV: Heartbeat never "
2436 "completed for scsi%d\n", instance->host->host_no);
2437 schedule_work(&instance->work_init);
2438 }
2439 }
2440
2441 /**
2442 * megasas_wait_for_outstanding - Wait for all outstanding cmds
2443 * @instance: Adapter soft state
2444 *
2445 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
2446 * complete all its outstanding commands. Returns error if one or more IOs
2447 * are pending after this time period. It also marks the controller dead.
2448 */
2449 static int megasas_wait_for_outstanding(struct megasas_instance *instance)
2450 {
2451 int i, sl, outstanding;
2452 u32 reset_index;
2453 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
2454 unsigned long flags;
2455 struct list_head clist_local;
2456 struct megasas_cmd *reset_cmd;
2457 u32 fw_state;
2458
2459 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2460 dev_info(&instance->pdev->dev, "%s:%d HBA is killed.\n",
2461 __func__, __LINE__);
2462 return FAILED;
2463 }
2464
2465 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2466
2467 INIT_LIST_HEAD(&clist_local);
2468 spin_lock_irqsave(&instance->hba_lock, flags);
2469 list_splice_init(&instance->internal_reset_pending_q,
2470 &clist_local);
2471 spin_unlock_irqrestore(&instance->hba_lock, flags);
2472
2473 dev_notice(&instance->pdev->dev, "HBA reset wait ...\n");
2474 for (i = 0; i < wait_time; i++) {
2475 msleep(1000);
2476 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL)
2477 break;
2478 }
2479
2480 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
2481 dev_notice(&instance->pdev->dev, "reset: Stopping HBA.\n");
2482 atomic_set(&instance->adprecovery, MEGASAS_HW_CRITICAL_ERROR);
2483 return FAILED;
2484 }
2485
2486 reset_index = 0;
2487 while (!list_empty(&clist_local)) {
2488 reset_cmd = list_entry((&clist_local)->next,
2489 struct megasas_cmd, list);
2490 list_del_init(&reset_cmd->list);
2491 if (reset_cmd->scmd) {
2492 reset_cmd->scmd->result = DID_RESET << 16;
2493 dev_notice(&instance->pdev->dev, "%d:%p reset [%02x]\n",
2494 reset_index, reset_cmd,
2495 reset_cmd->scmd->cmnd[0]);
2496
2497 reset_cmd->scmd->scsi_done(reset_cmd->scmd);
2498 megasas_return_cmd(instance, reset_cmd);
2499 } else if (reset_cmd->sync_cmd) {
2500 dev_notice(&instance->pdev->dev, "%p synch cmds"
2501 "reset queue\n",
2502 reset_cmd);
2503
2504 reset_cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
2505 instance->instancet->fire_cmd(instance,
2506 reset_cmd->frame_phys_addr,
2507 0, instance->reg_set);
2508 } else {
2509 dev_notice(&instance->pdev->dev, "%p unexpected"
2510 "cmds lst\n",
2511 reset_cmd);
2512 }
2513 reset_index++;
2514 }
2515
2516 return SUCCESS;
2517 }
2518
2519 for (i = 0; i < resetwaittime; i++) {
2520 outstanding = atomic_read(&instance->fw_outstanding);
2521
2522 if (!outstanding)
2523 break;
2524
2525 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2526 dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
2527 "commands to complete\n",i,outstanding);
2528 /*
2529 * Call cmd completion routine. Cmd to be
2530 * be completed directly without depending on isr.
2531 */
2532 megasas_complete_cmd_dpc((unsigned long)instance);
2533 }
2534
2535 msleep(1000);
2536 }
2537
2538 i = 0;
2539 outstanding = atomic_read(&instance->fw_outstanding);
2540 fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK;
2541
2542 if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2543 goto no_outstanding;
2544
2545 if (instance->disableOnlineCtrlReset)
2546 goto kill_hba_and_failed;
2547 do {
2548 if ((fw_state == MFI_STATE_FAULT) || atomic_read(&instance->fw_outstanding)) {
2549 dev_info(&instance->pdev->dev,
2550 "%s:%d waiting_for_outstanding: before issue OCR. FW state = 0x%x, oustanding 0x%x\n",
2551 __func__, __LINE__, fw_state, atomic_read(&instance->fw_outstanding));
2552 if (i == 3)
2553 goto kill_hba_and_failed;
2554 megasas_do_ocr(instance);
2555
2556 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2557 dev_info(&instance->pdev->dev, "%s:%d OCR failed and HBA is killed.\n",
2558 __func__, __LINE__);
2559 return FAILED;
2560 }
2561 dev_info(&instance->pdev->dev, "%s:%d waiting_for_outstanding: after issue OCR.\n",
2562 __func__, __LINE__);
2563
2564 for (sl = 0; sl < 10; sl++)
2565 msleep(500);
2566
2567 outstanding = atomic_read(&instance->fw_outstanding);
2568
2569 fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK;
2570 if ((!outstanding && (fw_state == MFI_STATE_OPERATIONAL)))
2571 goto no_outstanding;
2572 }
2573 i++;
2574 } while (i <= 3);
2575
2576 no_outstanding:
2577
2578 dev_info(&instance->pdev->dev, "%s:%d no more pending commands remain after reset handling.\n",
2579 __func__, __LINE__);
2580 return SUCCESS;
2581
2582 kill_hba_and_failed:
2583
2584 /* Reset not supported, kill adapter */
2585 dev_info(&instance->pdev->dev, "%s:%d killing adapter scsi%d"
2586 " disableOnlineCtrlReset %d fw_outstanding %d \n",
2587 __func__, __LINE__, instance->host->host_no, instance->disableOnlineCtrlReset,
2588 atomic_read(&instance->fw_outstanding));
2589 megasas_dump_pending_frames(instance);
2590 megaraid_sas_kill_hba(instance);
2591
2592 return FAILED;
2593 }
2594
2595 /**
2596 * megasas_generic_reset - Generic reset routine
2597 * @scmd: Mid-layer SCSI command
2598 *
2599 * This routine implements a generic reset handler for device, bus and host
2600 * reset requests. Device, bus and host specific reset handlers can use this
2601 * function after they do their specific tasks.
2602 */
2603 static int megasas_generic_reset(struct scsi_cmnd *scmd)
2604 {
2605 int ret_val;
2606 struct megasas_instance *instance;
2607
2608 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2609
2610 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
2611 scmd->cmnd[0], scmd->retries);
2612
2613 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
2614 dev_err(&instance->pdev->dev, "cannot recover from previous reset failures\n");
2615 return FAILED;
2616 }
2617
2618 ret_val = megasas_wait_for_outstanding(instance);
2619 if (ret_val == SUCCESS)
2620 dev_notice(&instance->pdev->dev, "reset successful\n");
2621 else
2622 dev_err(&instance->pdev->dev, "failed to do reset\n");
2623
2624 return ret_val;
2625 }
2626
2627 /**
2628 * megasas_reset_timer - quiesce the adapter if required
2629 * @scmd: scsi cmnd
2630 *
2631 * Sets the FW busy flag and reduces the host->can_queue if the
2632 * cmd has not been completed within the timeout period.
2633 */
2634 static enum
2635 blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
2636 {
2637 struct megasas_instance *instance;
2638 unsigned long flags;
2639
2640 if (time_after(jiffies, scmd->jiffies_at_alloc +
2641 (scmd_timeout * 2) * HZ)) {
2642 return BLK_EH_NOT_HANDLED;
2643 }
2644
2645 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2646 if (!(instance->flag & MEGASAS_FW_BUSY)) {
2647 /* FW is busy, throttle IO */
2648 spin_lock_irqsave(instance->host->host_lock, flags);
2649
2650 instance->host->can_queue = instance->throttlequeuedepth;
2651 instance->last_time = jiffies;
2652 instance->flag |= MEGASAS_FW_BUSY;
2653
2654 spin_unlock_irqrestore(instance->host->host_lock, flags);
2655 }
2656 return BLK_EH_RESET_TIMER;
2657 }
2658
2659 /**
2660 * megasas_reset_bus_host - Bus & host reset handler entry point
2661 */
2662 static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
2663 {
2664 int ret;
2665 struct megasas_instance *instance;
2666
2667 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2668
2669 /*
2670 * First wait for all commands to complete
2671 */
2672 if (instance->ctrl_context)
2673 ret = megasas_reset_fusion(scmd->device->host, 1);
2674 else
2675 ret = megasas_generic_reset(scmd);
2676
2677 return ret;
2678 }
2679
2680 /**
2681 * megasas_task_abort - Issues task abort request to firmware
2682 * (supported only for fusion adapters)
2683 * @scmd: SCSI command pointer
2684 */
2685 static int megasas_task_abort(struct scsi_cmnd *scmd)
2686 {
2687 int ret;
2688 struct megasas_instance *instance;
2689
2690 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2691
2692 if (instance->ctrl_context)
2693 ret = megasas_task_abort_fusion(scmd);
2694 else {
2695 sdev_printk(KERN_NOTICE, scmd->device, "TASK ABORT not supported\n");
2696 ret = FAILED;
2697 }
2698
2699 return ret;
2700 }
2701
2702 /**
2703 * megasas_reset_target: Issues target reset request to firmware
2704 * (supported only for fusion adapters)
2705 * @scmd: SCSI command pointer
2706 */
2707 static int megasas_reset_target(struct scsi_cmnd *scmd)
2708 {
2709 int ret;
2710 struct megasas_instance *instance;
2711
2712 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2713
2714 if (instance->ctrl_context)
2715 ret = megasas_reset_target_fusion(scmd);
2716 else {
2717 sdev_printk(KERN_NOTICE, scmd->device, "TARGET RESET not supported\n");
2718 ret = FAILED;
2719 }
2720
2721 return ret;
2722 }
2723
2724 /**
2725 * megasas_bios_param - Returns disk geometry for a disk
2726 * @sdev: device handle
2727 * @bdev: block device
2728 * @capacity: drive capacity
2729 * @geom: geometry parameters
2730 */
2731 static int
2732 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
2733 sector_t capacity, int geom[])
2734 {
2735 int heads;
2736 int sectors;
2737 sector_t cylinders;
2738 unsigned long tmp;
2739
2740 /* Default heads (64) & sectors (32) */
2741 heads = 64;
2742 sectors = 32;
2743
2744 tmp = heads * sectors;
2745 cylinders = capacity;
2746
2747 sector_div(cylinders, tmp);
2748
2749 /*
2750 * Handle extended translation size for logical drives > 1Gb
2751 */
2752
2753 if (capacity >= 0x200000) {
2754 heads = 255;
2755 sectors = 63;
2756 tmp = heads*sectors;
2757 cylinders = capacity;
2758 sector_div(cylinders, tmp);
2759 }
2760
2761 geom[0] = heads;
2762 geom[1] = sectors;
2763 geom[2] = cylinders;
2764
2765 return 0;
2766 }
2767
2768 static void megasas_aen_polling(struct work_struct *work);
2769
2770 /**
2771 * megasas_service_aen - Processes an event notification
2772 * @instance: Adapter soft state
2773 * @cmd: AEN command completed by the ISR
2774 *
2775 * For AEN, driver sends a command down to FW that is held by the FW till an
2776 * event occurs. When an event of interest occurs, FW completes the command
2777 * that it was previously holding.
2778 *
2779 * This routines sends SIGIO signal to processes that have registered with the
2780 * driver for AEN.
2781 */
2782 static void
2783 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
2784 {
2785 unsigned long flags;
2786
2787 /*
2788 * Don't signal app if it is just an aborted previously registered aen
2789 */
2790 if ((!cmd->abort_aen) && (instance->unload == 0)) {
2791 spin_lock_irqsave(&poll_aen_lock, flags);
2792 megasas_poll_wait_aen = 1;
2793 spin_unlock_irqrestore(&poll_aen_lock, flags);
2794 wake_up(&megasas_poll_wait);
2795 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
2796 }
2797 else
2798 cmd->abort_aen = 0;
2799
2800 instance->aen_cmd = NULL;
2801
2802 megasas_return_cmd(instance, cmd);
2803
2804 if ((instance->unload == 0) &&
2805 ((instance->issuepend_done == 1))) {
2806 struct megasas_aen_event *ev;
2807
2808 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
2809 if (!ev) {
2810 dev_err(&instance->pdev->dev, "megasas_service_aen: out of memory\n");
2811 } else {
2812 ev->instance = instance;
2813 instance->ev = ev;
2814 INIT_DELAYED_WORK(&ev->hotplug_work,
2815 megasas_aen_polling);
2816 schedule_delayed_work(&ev->hotplug_work, 0);
2817 }
2818 }
2819 }
2820
2821 static ssize_t
2822 megasas_fw_crash_buffer_store(struct device *cdev,
2823 struct device_attribute *attr, const char *buf, size_t count)
2824 {
2825 struct Scsi_Host *shost = class_to_shost(cdev);
2826 struct megasas_instance *instance =
2827 (struct megasas_instance *) shost->hostdata;
2828 int val = 0;
2829 unsigned long flags;
2830
2831 if (kstrtoint(buf, 0, &val) != 0)
2832 return -EINVAL;
2833
2834 spin_lock_irqsave(&instance->crashdump_lock, flags);
2835 instance->fw_crash_buffer_offset = val;
2836 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2837 return strlen(buf);
2838 }
2839
2840 static ssize_t
2841 megasas_fw_crash_buffer_show(struct device *cdev,
2842 struct device_attribute *attr, char *buf)
2843 {
2844 struct Scsi_Host *shost = class_to_shost(cdev);
2845 struct megasas_instance *instance =
2846 (struct megasas_instance *) shost->hostdata;
2847 u32 size;
2848 unsigned long buff_addr;
2849 unsigned long dmachunk = CRASH_DMA_BUF_SIZE;
2850 unsigned long chunk_left_bytes;
2851 unsigned long src_addr;
2852 unsigned long flags;
2853 u32 buff_offset;
2854
2855 spin_lock_irqsave(&instance->crashdump_lock, flags);
2856 buff_offset = instance->fw_crash_buffer_offset;
2857 if (!instance->crash_dump_buf &&
2858 !((instance->fw_crash_state == AVAILABLE) ||
2859 (instance->fw_crash_state == COPYING))) {
2860 dev_err(&instance->pdev->dev,
2861 "Firmware crash dump is not available\n");
2862 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2863 return -EINVAL;
2864 }
2865
2866 buff_addr = (unsigned long) buf;
2867
2868 if (buff_offset > (instance->fw_crash_buffer_size * dmachunk)) {
2869 dev_err(&instance->pdev->dev,
2870 "Firmware crash dump offset is out of range\n");
2871 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2872 return 0;
2873 }
2874
2875 size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset;
2876 chunk_left_bytes = dmachunk - (buff_offset % dmachunk);
2877 size = (size > chunk_left_bytes) ? chunk_left_bytes : size;
2878 size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size;
2879
2880 src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] +
2881 (buff_offset % dmachunk);
2882 memcpy(buf, (void *)src_addr, size);
2883 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2884
2885 return size;
2886 }
2887
2888 static ssize_t
2889 megasas_fw_crash_buffer_size_show(struct device *cdev,
2890 struct device_attribute *attr, char *buf)
2891 {
2892 struct Scsi_Host *shost = class_to_shost(cdev);
2893 struct megasas_instance *instance =
2894 (struct megasas_instance *) shost->hostdata;
2895
2896 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)
2897 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE);
2898 }
2899
2900 static ssize_t
2901 megasas_fw_crash_state_store(struct device *cdev,
2902 struct device_attribute *attr, const char *buf, size_t count)
2903 {
2904 struct Scsi_Host *shost = class_to_shost(cdev);
2905 struct megasas_instance *instance =
2906 (struct megasas_instance *) shost->hostdata;
2907 int val = 0;
2908 unsigned long flags;
2909
2910 if (kstrtoint(buf, 0, &val) != 0)
2911 return -EINVAL;
2912
2913 if ((val <= AVAILABLE || val > COPY_ERROR)) {
2914 dev_err(&instance->pdev->dev, "application updates invalid "
2915 "firmware crash state\n");
2916 return -EINVAL;
2917 }
2918
2919 instance->fw_crash_state = val;
2920
2921 if ((val == COPIED) || (val == COPY_ERROR)) {
2922 spin_lock_irqsave(&instance->crashdump_lock, flags);
2923 megasas_free_host_crash_buffer(instance);
2924 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2925 if (val == COPY_ERROR)
2926 dev_info(&instance->pdev->dev, "application failed to "
2927 "copy Firmware crash dump\n");
2928 else
2929 dev_info(&instance->pdev->dev, "Firmware crash dump "
2930 "copied successfully\n");
2931 }
2932 return strlen(buf);
2933 }
2934
2935 static ssize_t
2936 megasas_fw_crash_state_show(struct device *cdev,
2937 struct device_attribute *attr, char *buf)
2938 {
2939 struct Scsi_Host *shost = class_to_shost(cdev);
2940 struct megasas_instance *instance =
2941 (struct megasas_instance *) shost->hostdata;
2942
2943 return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state);
2944 }
2945
2946 static ssize_t
2947 megasas_page_size_show(struct device *cdev,
2948 struct device_attribute *attr, char *buf)
2949 {
2950 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1);
2951 }
2952
2953 static ssize_t
2954 megasas_ldio_outstanding_show(struct device *cdev, struct device_attribute *attr,
2955 char *buf)
2956 {
2957 struct Scsi_Host *shost = class_to_shost(cdev);
2958 struct megasas_instance *instance = (struct megasas_instance *)shost->hostdata;
2959
2960 return snprintf(buf, PAGE_SIZE, "%d\n", atomic_read(&instance->ldio_outstanding));
2961 }
2962
2963 static DEVICE_ATTR(fw_crash_buffer, S_IRUGO | S_IWUSR,
2964 megasas_fw_crash_buffer_show, megasas_fw_crash_buffer_store);
2965 static DEVICE_ATTR(fw_crash_buffer_size, S_IRUGO,
2966 megasas_fw_crash_buffer_size_show, NULL);
2967 static DEVICE_ATTR(fw_crash_state, S_IRUGO | S_IWUSR,
2968 megasas_fw_crash_state_show, megasas_fw_crash_state_store);
2969 static DEVICE_ATTR(page_size, S_IRUGO,
2970 megasas_page_size_show, NULL);
2971 static DEVICE_ATTR(ldio_outstanding, S_IRUGO,
2972 megasas_ldio_outstanding_show, NULL);
2973
2974 struct device_attribute *megaraid_host_attrs[] = {
2975 &dev_attr_fw_crash_buffer_size,
2976 &dev_attr_fw_crash_buffer,
2977 &dev_attr_fw_crash_state,
2978 &dev_attr_page_size,
2979 &dev_attr_ldio_outstanding,
2980 NULL,
2981 };
2982
2983 /*
2984 * Scsi host template for megaraid_sas driver
2985 */
2986 static struct scsi_host_template megasas_template = {
2987
2988 .module = THIS_MODULE,
2989 .name = "Avago SAS based MegaRAID driver",
2990 .proc_name = "megaraid_sas",
2991 .slave_configure = megasas_slave_configure,
2992 .slave_alloc = megasas_slave_alloc,
2993 .slave_destroy = megasas_slave_destroy,
2994 .queuecommand = megasas_queue_command,
2995 .eh_target_reset_handler = megasas_reset_target,
2996 .eh_abort_handler = megasas_task_abort,
2997 .eh_host_reset_handler = megasas_reset_bus_host,
2998 .eh_timed_out = megasas_reset_timer,
2999 .shost_attrs = megaraid_host_attrs,
3000 .bios_param = megasas_bios_param,
3001 .use_clustering = ENABLE_CLUSTERING,
3002 .change_queue_depth = scsi_change_queue_depth,
3003 .no_write_same = 1,
3004 };
3005
3006 /**
3007 * megasas_complete_int_cmd - Completes an internal command
3008 * @instance: Adapter soft state
3009 * @cmd: Command to be completed
3010 *
3011 * The megasas_issue_blocked_cmd() function waits for a command to complete
3012 * after it issues a command. This function wakes up that waiting routine by
3013 * calling wake_up() on the wait queue.
3014 */
3015 static void
3016 megasas_complete_int_cmd(struct megasas_instance *instance,
3017 struct megasas_cmd *cmd)
3018 {
3019 cmd->cmd_status_drv = cmd->frame->io.cmd_status;
3020 wake_up(&instance->int_cmd_wait_q);
3021 }
3022
3023 /**
3024 * megasas_complete_abort - Completes aborting a command
3025 * @instance: Adapter soft state
3026 * @cmd: Cmd that was issued to abort another cmd
3027 *
3028 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
3029 * after it issues an abort on a previously issued command. This function
3030 * wakes up all functions waiting on the same wait queue.
3031 */
3032 static void
3033 megasas_complete_abort(struct megasas_instance *instance,
3034 struct megasas_cmd *cmd)
3035 {
3036 if (cmd->sync_cmd) {
3037 cmd->sync_cmd = 0;
3038 cmd->cmd_status_drv = 0;
3039 wake_up(&instance->abort_cmd_wait_q);
3040 }
3041 }
3042
3043 /**
3044 * megasas_complete_cmd - Completes a command
3045 * @instance: Adapter soft state
3046 * @cmd: Command to be completed
3047 * @alt_status: If non-zero, use this value as status to
3048 * SCSI mid-layer instead of the value returned
3049 * by the FW. This should be used if caller wants
3050 * an alternate status (as in the case of aborted
3051 * commands)
3052 */
3053 void
3054 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
3055 u8 alt_status)
3056 {
3057 int exception = 0;
3058 struct megasas_header *hdr = &cmd->frame->hdr;
3059 unsigned long flags;
3060 struct fusion_context *fusion = instance->ctrl_context;
3061 u32 opcode, status;
3062
3063 /* flag for the retry reset */
3064 cmd->retry_for_fw_reset = 0;
3065
3066 if (cmd->scmd)
3067 cmd->scmd->SCp.ptr = NULL;
3068
3069 switch (hdr->cmd) {
3070 case MFI_CMD_INVALID:
3071 /* Some older 1068 controller FW may keep a pended
3072 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
3073 when booting the kdump kernel. Ignore this command to
3074 prevent a kernel panic on shutdown of the kdump kernel. */
3075 dev_warn(&instance->pdev->dev, "MFI_CMD_INVALID command "
3076 "completed\n");
3077 dev_warn(&instance->pdev->dev, "If you have a controller "
3078 "other than PERC5, please upgrade your firmware\n");
3079 break;
3080 case MFI_CMD_PD_SCSI_IO:
3081 case MFI_CMD_LD_SCSI_IO:
3082
3083 /*
3084 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
3085 * issued either through an IO path or an IOCTL path. If it
3086 * was via IOCTL, we will send it to internal completion.
3087 */
3088 if (cmd->sync_cmd) {
3089 cmd->sync_cmd = 0;
3090 megasas_complete_int_cmd(instance, cmd);
3091 break;
3092 }
3093
3094 case MFI_CMD_LD_READ:
3095 case MFI_CMD_LD_WRITE:
3096
3097 if (alt_status) {
3098 cmd->scmd->result = alt_status << 16;
3099 exception = 1;
3100 }
3101
3102 if (exception) {
3103
3104 atomic_dec(&instance->fw_outstanding);
3105
3106 scsi_dma_unmap(cmd->scmd);
3107 cmd->scmd->scsi_done(cmd->scmd);
3108 megasas_return_cmd(instance, cmd);
3109
3110 break;
3111 }
3112
3113 switch (hdr->cmd_status) {
3114
3115 case MFI_STAT_OK:
3116 cmd->scmd->result = DID_OK << 16;
3117 break;
3118
3119 case MFI_STAT_SCSI_IO_FAILED:
3120 case MFI_STAT_LD_INIT_IN_PROGRESS:
3121 cmd->scmd->result =
3122 (DID_ERROR << 16) | hdr->scsi_status;
3123 break;
3124
3125 case MFI_STAT_SCSI_DONE_WITH_ERROR:
3126
3127 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
3128
3129 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
3130 memset(cmd->scmd->sense_buffer, 0,
3131 SCSI_SENSE_BUFFERSIZE);
3132 memcpy(cmd->scmd->sense_buffer, cmd->sense,
3133 hdr->sense_len);
3134
3135 cmd->scmd->result |= DRIVER_SENSE << 24;
3136 }
3137
3138 break;
3139
3140 case MFI_STAT_LD_OFFLINE:
3141 case MFI_STAT_DEVICE_NOT_FOUND:
3142 cmd->scmd->result = DID_BAD_TARGET << 16;
3143 break;
3144
3145 default:
3146 dev_printk(KERN_DEBUG, &instance->pdev->dev, "MFI FW status %#x\n",
3147 hdr->cmd_status);
3148 cmd->scmd->result = DID_ERROR << 16;
3149 break;
3150 }
3151
3152 atomic_dec(&instance->fw_outstanding);
3153
3154 scsi_dma_unmap(cmd->scmd);
3155 cmd->scmd->scsi_done(cmd->scmd);
3156 megasas_return_cmd(instance, cmd);
3157
3158 break;
3159
3160 case MFI_CMD_SMP:
3161 case MFI_CMD_STP:
3162 case MFI_CMD_DCMD:
3163 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
3164 /* Check for LD map update */
3165 if ((opcode == MR_DCMD_LD_MAP_GET_INFO)
3166 && (cmd->frame->dcmd.mbox.b[1] == 1)) {
3167 fusion->fast_path_io = 0;
3168 spin_lock_irqsave(instance->host->host_lock, flags);
3169 instance->map_update_cmd = NULL;
3170 if (cmd->frame->hdr.cmd_status != 0) {
3171 if (cmd->frame->hdr.cmd_status !=
3172 MFI_STAT_NOT_FOUND)
3173 dev_warn(&instance->pdev->dev, "map syncfailed, status = 0x%x\n",
3174 cmd->frame->hdr.cmd_status);
3175 else {
3176 megasas_return_cmd(instance, cmd);
3177 spin_unlock_irqrestore(
3178 instance->host->host_lock,
3179 flags);
3180 break;
3181 }
3182 } else
3183 instance->map_id++;
3184 megasas_return_cmd(instance, cmd);
3185
3186 /*
3187 * Set fast path IO to ZERO.
3188 * Validate Map will set proper value.
3189 * Meanwhile all IOs will go as LD IO.
3190 */
3191 if (MR_ValidateMapInfo(instance))
3192 fusion->fast_path_io = 1;
3193 else
3194 fusion->fast_path_io = 0;
3195 megasas_sync_map_info(instance);
3196 spin_unlock_irqrestore(instance->host->host_lock,
3197 flags);
3198 break;
3199 }
3200 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
3201 opcode == MR_DCMD_CTRL_EVENT_GET) {
3202 spin_lock_irqsave(&poll_aen_lock, flags);
3203 megasas_poll_wait_aen = 0;
3204 spin_unlock_irqrestore(&poll_aen_lock, flags);
3205 }
3206
3207 /* FW has an updated PD sequence */
3208 if ((opcode == MR_DCMD_SYSTEM_PD_MAP_GET_INFO) &&
3209 (cmd->frame->dcmd.mbox.b[0] == 1)) {
3210
3211 spin_lock_irqsave(instance->host->host_lock, flags);
3212 status = cmd->frame->hdr.cmd_status;
3213 instance->jbod_seq_cmd = NULL;
3214 megasas_return_cmd(instance, cmd);
3215
3216 if (status == MFI_STAT_OK) {
3217 instance->pd_seq_map_id++;
3218 /* Re-register a pd sync seq num cmd */
3219 if (megasas_sync_pd_seq_num(instance, true))
3220 instance->use_seqnum_jbod_fp = false;
3221 } else
3222 instance->use_seqnum_jbod_fp = false;
3223
3224 spin_unlock_irqrestore(instance->host->host_lock, flags);
3225 break;
3226 }
3227
3228 /*
3229 * See if got an event notification
3230 */
3231 if (opcode == MR_DCMD_CTRL_EVENT_WAIT)
3232 megasas_service_aen(instance, cmd);
3233 else
3234 megasas_complete_int_cmd(instance, cmd);
3235
3236 break;
3237
3238 case MFI_CMD_ABORT:
3239 /*
3240 * Cmd issued to abort another cmd returned
3241 */
3242 megasas_complete_abort(instance, cmd);
3243 break;
3244
3245 default:
3246 dev_info(&instance->pdev->dev, "Unknown command completed! [0x%X]\n",
3247 hdr->cmd);
3248 break;
3249 }
3250 }
3251
3252 /**
3253 * megasas_issue_pending_cmds_again - issue all pending cmds
3254 * in FW again because of the fw reset
3255 * @instance: Adapter soft state
3256 */
3257 static inline void
3258 megasas_issue_pending_cmds_again(struct megasas_instance *instance)
3259 {
3260 struct megasas_cmd *cmd;
3261 struct list_head clist_local;
3262 union megasas_evt_class_locale class_locale;
3263 unsigned long flags;
3264 u32 seq_num;
3265
3266 INIT_LIST_HEAD(&clist_local);
3267 spin_lock_irqsave(&instance->hba_lock, flags);
3268 list_splice_init(&instance->internal_reset_pending_q, &clist_local);
3269 spin_unlock_irqrestore(&instance->hba_lock, flags);
3270
3271 while (!list_empty(&clist_local)) {
3272 cmd = list_entry((&clist_local)->next,
3273 struct megasas_cmd, list);
3274 list_del_init(&cmd->list);
3275
3276 if (cmd->sync_cmd || cmd->scmd) {
3277 dev_notice(&instance->pdev->dev, "command %p, %p:%d"
3278 "detected to be pending while HBA reset\n",
3279 cmd, cmd->scmd, cmd->sync_cmd);
3280
3281 cmd->retry_for_fw_reset++;
3282
3283 if (cmd->retry_for_fw_reset == 3) {
3284 dev_notice(&instance->pdev->dev, "cmd %p, %p:%d"
3285 "was tried multiple times during reset."
3286 "Shutting down the HBA\n",
3287 cmd, cmd->scmd, cmd->sync_cmd);
3288 instance->instancet->disable_intr(instance);
3289 atomic_set(&instance->fw_reset_no_pci_access, 1);
3290 megaraid_sas_kill_hba(instance);
3291 return;
3292 }
3293 }
3294
3295 if (cmd->sync_cmd == 1) {
3296 if (cmd->scmd) {
3297 dev_notice(&instance->pdev->dev, "unexpected"
3298 "cmd attached to internal command!\n");
3299 }
3300 dev_notice(&instance->pdev->dev, "%p synchronous cmd"
3301 "on the internal reset queue,"
3302 "issue it again.\n", cmd);
3303 cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
3304 instance->instancet->fire_cmd(instance,
3305 cmd->frame_phys_addr,
3306 0, instance->reg_set);
3307 } else if (cmd->scmd) {
3308 dev_notice(&instance->pdev->dev, "%p scsi cmd [%02x]"
3309 "detected on the internal queue, issue again.\n",
3310 cmd, cmd->scmd->cmnd[0]);
3311
3312 atomic_inc(&instance->fw_outstanding);
3313 instance->instancet->fire_cmd(instance,
3314 cmd->frame_phys_addr,
3315 cmd->frame_count-1, instance->reg_set);
3316 } else {
3317 dev_notice(&instance->pdev->dev, "%p unexpected cmd on the"
3318 "internal reset defer list while re-issue!!\n",
3319 cmd);
3320 }
3321 }
3322
3323 if (instance->aen_cmd) {
3324 dev_notice(&instance->pdev->dev, "aen_cmd in def process\n");
3325 megasas_return_cmd(instance, instance->aen_cmd);
3326
3327 instance->aen_cmd = NULL;
3328 }
3329
3330 /*
3331 * Initiate AEN (Asynchronous Event Notification)
3332 */
3333 seq_num = instance->last_seq_num;
3334 class_locale.members.reserved = 0;
3335 class_locale.members.locale = MR_EVT_LOCALE_ALL;
3336 class_locale.members.class = MR_EVT_CLASS_DEBUG;
3337
3338 megasas_register_aen(instance, seq_num, class_locale.word);
3339 }
3340
3341 /**
3342 * Move the internal reset pending commands to a deferred queue.
3343 *
3344 * We move the commands pending at internal reset time to a
3345 * pending queue. This queue would be flushed after successful
3346 * completion of the internal reset sequence. if the internal reset
3347 * did not complete in time, the kernel reset handler would flush
3348 * these commands.
3349 **/
3350 static void
3351 megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
3352 {
3353 struct megasas_cmd *cmd;
3354 int i;
3355 u32 max_cmd = instance->max_fw_cmds;
3356 u32 defer_index;
3357 unsigned long flags;
3358
3359 defer_index = 0;
3360 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
3361 for (i = 0; i < max_cmd; i++) {
3362 cmd = instance->cmd_list[i];
3363 if (cmd->sync_cmd == 1 || cmd->scmd) {
3364 dev_notice(&instance->pdev->dev, "moving cmd[%d]:%p:%d:%p"
3365 "on the defer queue as internal\n",
3366 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
3367
3368 if (!list_empty(&cmd->list)) {
3369 dev_notice(&instance->pdev->dev, "ERROR while"
3370 " moving this cmd:%p, %d %p, it was"
3371 "discovered on some list?\n",
3372 cmd, cmd->sync_cmd, cmd->scmd);
3373
3374 list_del_init(&cmd->list);
3375 }
3376 defer_index++;
3377 list_add_tail(&cmd->list,
3378 &instance->internal_reset_pending_q);
3379 }
3380 }
3381 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
3382 }
3383
3384
3385 static void
3386 process_fw_state_change_wq(struct work_struct *work)
3387 {
3388 struct megasas_instance *instance =
3389 container_of(work, struct megasas_instance, work_init);
3390 u32 wait;
3391 unsigned long flags;
3392
3393 if (atomic_read(&instance->adprecovery) != MEGASAS_ADPRESET_SM_INFAULT) {
3394 dev_notice(&instance->pdev->dev, "error, recovery st %x\n",
3395 atomic_read(&instance->adprecovery));
3396 return ;
3397 }
3398
3399 if (atomic_read(&instance->adprecovery) == MEGASAS_ADPRESET_SM_INFAULT) {
3400 dev_notice(&instance->pdev->dev, "FW detected to be in fault"
3401 "state, restarting it...\n");
3402
3403 instance->instancet->disable_intr(instance);
3404 atomic_set(&instance->fw_outstanding, 0);
3405
3406 atomic_set(&instance->fw_reset_no_pci_access, 1);
3407 instance->instancet->adp_reset(instance, instance->reg_set);
3408 atomic_set(&instance->fw_reset_no_pci_access, 0);
3409
3410 dev_notice(&instance->pdev->dev, "FW restarted successfully,"
3411 "initiating next stage...\n");
3412
3413 dev_notice(&instance->pdev->dev, "HBA recovery state machine,"
3414 "state 2 starting...\n");
3415
3416 /* waiting for about 20 second before start the second init */
3417 for (wait = 0; wait < 30; wait++) {
3418 msleep(1000);
3419 }
3420
3421 if (megasas_transition_to_ready(instance, 1)) {
3422 dev_notice(&instance->pdev->dev, "adapter not ready\n");
3423
3424 atomic_set(&instance->fw_reset_no_pci_access, 1);
3425 megaraid_sas_kill_hba(instance);
3426 return ;
3427 }
3428
3429 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
3430 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
3431 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
3432 ) {
3433 *instance->consumer = *instance->producer;
3434 } else {
3435 *instance->consumer = 0;
3436 *instance->producer = 0;
3437 }
3438
3439 megasas_issue_init_mfi(instance);
3440
3441 spin_lock_irqsave(&instance->hba_lock, flags);
3442 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
3443 spin_unlock_irqrestore(&instance->hba_lock, flags);
3444 instance->instancet->enable_intr(instance);
3445
3446 megasas_issue_pending_cmds_again(instance);
3447 instance->issuepend_done = 1;
3448 }
3449 }
3450
3451 /**
3452 * megasas_deplete_reply_queue - Processes all completed commands
3453 * @instance: Adapter soft state
3454 * @alt_status: Alternate status to be returned to
3455 * SCSI mid-layer instead of the status
3456 * returned by the FW
3457 * Note: this must be called with hba lock held
3458 */
3459 static int
3460 megasas_deplete_reply_queue(struct megasas_instance *instance,
3461 u8 alt_status)
3462 {
3463 u32 mfiStatus;
3464 u32 fw_state;
3465
3466 if ((mfiStatus = instance->instancet->check_reset(instance,
3467 instance->reg_set)) == 1) {
3468 return IRQ_HANDLED;
3469 }
3470
3471 if ((mfiStatus = instance->instancet->clear_intr(
3472 instance->reg_set)
3473 ) == 0) {
3474 /* Hardware may not set outbound_intr_status in MSI-X mode */
3475 if (!instance->msix_vectors)
3476 return IRQ_NONE;
3477 }
3478
3479 instance->mfiStatus = mfiStatus;
3480
3481 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
3482 fw_state = instance->instancet->read_fw_status_reg(
3483 instance->reg_set) & MFI_STATE_MASK;
3484
3485 if (fw_state != MFI_STATE_FAULT) {
3486 dev_notice(&instance->pdev->dev, "fw state:%x\n",
3487 fw_state);
3488 }
3489
3490 if ((fw_state == MFI_STATE_FAULT) &&
3491 (instance->disableOnlineCtrlReset == 0)) {
3492 dev_notice(&instance->pdev->dev, "wait adp restart\n");
3493
3494 if ((instance->pdev->device ==
3495 PCI_DEVICE_ID_LSI_SAS1064R) ||
3496 (instance->pdev->device ==
3497 PCI_DEVICE_ID_DELL_PERC5) ||
3498 (instance->pdev->device ==
3499 PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
3500
3501 *instance->consumer =
3502 cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
3503 }
3504
3505
3506 instance->instancet->disable_intr(instance);
3507 atomic_set(&instance->adprecovery, MEGASAS_ADPRESET_SM_INFAULT);
3508 instance->issuepend_done = 0;
3509
3510 atomic_set(&instance->fw_outstanding, 0);
3511 megasas_internal_reset_defer_cmds(instance);
3512
3513 dev_notice(&instance->pdev->dev, "fwState=%x, stage:%d\n",
3514 fw_state, atomic_read(&instance->adprecovery));
3515
3516 schedule_work(&instance->work_init);
3517 return IRQ_HANDLED;
3518
3519 } else {
3520 dev_notice(&instance->pdev->dev, "fwstate:%x, dis_OCR=%x\n",
3521 fw_state, instance->disableOnlineCtrlReset);
3522 }
3523 }
3524
3525 tasklet_schedule(&instance->isr_tasklet);
3526 return IRQ_HANDLED;
3527 }
3528 /**
3529 * megasas_isr - isr entry point
3530 */
3531 static irqreturn_t megasas_isr(int irq, void *devp)
3532 {
3533 struct megasas_irq_context *irq_context = devp;
3534 struct megasas_instance *instance = irq_context->instance;
3535 unsigned long flags;
3536 irqreturn_t rc;
3537
3538 if (atomic_read(&instance->fw_reset_no_pci_access))
3539 return IRQ_HANDLED;
3540
3541 spin_lock_irqsave(&instance->hba_lock, flags);
3542 rc = megasas_deplete_reply_queue(instance, DID_OK);
3543 spin_unlock_irqrestore(&instance->hba_lock, flags);
3544
3545 return rc;
3546 }
3547
3548 /**
3549 * megasas_transition_to_ready - Move the FW to READY state
3550 * @instance: Adapter soft state
3551 *
3552 * During the initialization, FW passes can potentially be in any one of
3553 * several possible states. If the FW in operational, waiting-for-handshake
3554 * states, driver must take steps to bring it to ready state. Otherwise, it
3555 * has to wait for the ready state.
3556 */
3557 int
3558 megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
3559 {
3560 int i;
3561 u8 max_wait;
3562 u32 fw_state;
3563 u32 cur_state;
3564 u32 abs_state, curr_abs_state;
3565
3566 abs_state = instance->instancet->read_fw_status_reg(instance->reg_set);
3567 fw_state = abs_state & MFI_STATE_MASK;
3568
3569 if (fw_state != MFI_STATE_READY)
3570 dev_info(&instance->pdev->dev, "Waiting for FW to come to ready"
3571 " state\n");
3572
3573 while (fw_state != MFI_STATE_READY) {
3574
3575 switch (fw_state) {
3576
3577 case MFI_STATE_FAULT:
3578 dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW in FAULT state!!\n");
3579 if (ocr) {
3580 max_wait = MEGASAS_RESET_WAIT_TIME;
3581 cur_state = MFI_STATE_FAULT;
3582 break;
3583 } else
3584 return -ENODEV;
3585
3586 case MFI_STATE_WAIT_HANDSHAKE:
3587 /*
3588 * Set the CLR bit in inbound doorbell
3589 */
3590 if ((instance->pdev->device ==
3591 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3592 (instance->pdev->device ==
3593 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3594 (instance->ctrl_context))
3595 writel(
3596 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
3597 &instance->reg_set->doorbell);
3598 else
3599 writel(
3600 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
3601 &instance->reg_set->inbound_doorbell);
3602
3603 max_wait = MEGASAS_RESET_WAIT_TIME;
3604 cur_state = MFI_STATE_WAIT_HANDSHAKE;
3605 break;
3606
3607 case MFI_STATE_BOOT_MESSAGE_PENDING:
3608 if ((instance->pdev->device ==
3609 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3610 (instance->pdev->device ==
3611 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3612 (instance->ctrl_context))
3613 writel(MFI_INIT_HOTPLUG,
3614 &instance->reg_set->doorbell);
3615 else
3616 writel(MFI_INIT_HOTPLUG,
3617 &instance->reg_set->inbound_doorbell);
3618
3619 max_wait = MEGASAS_RESET_WAIT_TIME;
3620 cur_state = MFI_STATE_BOOT_MESSAGE_PENDING;
3621 break;
3622
3623 case MFI_STATE_OPERATIONAL:
3624 /*
3625 * Bring it to READY state; assuming max wait 10 secs
3626 */
3627 instance->instancet->disable_intr(instance);
3628 if ((instance->pdev->device ==
3629 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3630 (instance->pdev->device ==
3631 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3632 (instance->ctrl_context)) {
3633 writel(MFI_RESET_FLAGS,
3634 &instance->reg_set->doorbell);
3635
3636 if (instance->ctrl_context) {
3637 for (i = 0; i < (10 * 1000); i += 20) {
3638 if (readl(
3639 &instance->
3640 reg_set->
3641 doorbell) & 1)
3642 msleep(20);
3643 else
3644 break;
3645 }
3646 }
3647 } else
3648 writel(MFI_RESET_FLAGS,
3649 &instance->reg_set->inbound_doorbell);
3650
3651 max_wait = MEGASAS_RESET_WAIT_TIME;
3652 cur_state = MFI_STATE_OPERATIONAL;
3653 break;
3654
3655 case MFI_STATE_UNDEFINED:
3656 /*
3657 * This state should not last for more than 2 seconds
3658 */
3659 max_wait = MEGASAS_RESET_WAIT_TIME;
3660 cur_state = MFI_STATE_UNDEFINED;
3661 break;
3662
3663 case MFI_STATE_BB_INIT:
3664 max_wait = MEGASAS_RESET_WAIT_TIME;
3665 cur_state = MFI_STATE_BB_INIT;
3666 break;
3667
3668 case MFI_STATE_FW_INIT:
3669 max_wait = MEGASAS_RESET_WAIT_TIME;
3670 cur_state = MFI_STATE_FW_INIT;
3671 break;
3672
3673 case MFI_STATE_FW_INIT_2:
3674 max_wait = MEGASAS_RESET_WAIT_TIME;
3675 cur_state = MFI_STATE_FW_INIT_2;
3676 break;
3677
3678 case MFI_STATE_DEVICE_SCAN:
3679 max_wait = MEGASAS_RESET_WAIT_TIME;
3680 cur_state = MFI_STATE_DEVICE_SCAN;
3681 break;
3682
3683 case MFI_STATE_FLUSH_CACHE:
3684 max_wait = MEGASAS_RESET_WAIT_TIME;
3685 cur_state = MFI_STATE_FLUSH_CACHE;
3686 break;
3687
3688 default:
3689 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Unknown state 0x%x\n",
3690 fw_state);
3691 return -ENODEV;
3692 }
3693
3694 /*
3695 * The cur_state should not last for more than max_wait secs
3696 */
3697 for (i = 0; i < max_wait * 50; i++) {
3698 curr_abs_state = instance->instancet->
3699 read_fw_status_reg(instance->reg_set);
3700
3701 if (abs_state == curr_abs_state) {
3702 msleep(20);
3703 } else
3704 break;
3705 }
3706
3707 /*
3708 * Return error if fw_state hasn't changed after max_wait
3709 */
3710 if (curr_abs_state == abs_state) {
3711 dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW state [%d] hasn't changed "
3712 "in %d secs\n", fw_state, max_wait);
3713 return -ENODEV;
3714 }
3715
3716 abs_state = curr_abs_state;
3717 fw_state = curr_abs_state & MFI_STATE_MASK;
3718 }
3719 dev_info(&instance->pdev->dev, "FW now in Ready state\n");
3720
3721 return 0;
3722 }
3723
3724 /**
3725 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool
3726 * @instance: Adapter soft state
3727 */
3728 static void megasas_teardown_frame_pool(struct megasas_instance *instance)
3729 {
3730 int i;
3731 u32 max_cmd = instance->max_mfi_cmds;
3732 struct megasas_cmd *cmd;
3733
3734 if (!instance->frame_dma_pool)
3735 return;
3736
3737 /*
3738 * Return all frames to pool
3739 */
3740 for (i = 0; i < max_cmd; i++) {
3741
3742 cmd = instance->cmd_list[i];
3743
3744 if (cmd->frame)
3745 pci_pool_free(instance->frame_dma_pool, cmd->frame,
3746 cmd->frame_phys_addr);
3747
3748 if (cmd->sense)
3749 pci_pool_free(instance->sense_dma_pool, cmd->sense,
3750 cmd->sense_phys_addr);
3751 }
3752
3753 /*
3754 * Now destroy the pool itself
3755 */
3756 pci_pool_destroy(instance->frame_dma_pool);
3757 pci_pool_destroy(instance->sense_dma_pool);
3758
3759 instance->frame_dma_pool = NULL;
3760 instance->sense_dma_pool = NULL;
3761 }
3762
3763 /**
3764 * megasas_create_frame_pool - Creates DMA pool for cmd frames
3765 * @instance: Adapter soft state
3766 *
3767 * Each command packet has an embedded DMA memory buffer that is used for
3768 * filling MFI frame and the SG list that immediately follows the frame. This
3769 * function creates those DMA memory buffers for each command packet by using
3770 * PCI pool facility.
3771 */
3772 static int megasas_create_frame_pool(struct megasas_instance *instance)
3773 {
3774 int i;
3775 u32 max_cmd;
3776 u32 sge_sz;
3777 u32 total_sz;
3778 u32 frame_count;
3779 struct megasas_cmd *cmd;
3780
3781 max_cmd = instance->max_mfi_cmds;
3782
3783 /*
3784 * Size of our frame is 64 bytes for MFI frame, followed by max SG
3785 * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer
3786 */
3787 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
3788 sizeof(struct megasas_sge32);
3789
3790 if (instance->flag_ieee)
3791 sge_sz = sizeof(struct megasas_sge_skinny);
3792
3793 /*
3794 * For MFI controllers.
3795 * max_num_sge = 60
3796 * max_sge_sz = 16 byte (sizeof megasas_sge_skinny)
3797 * Total 960 byte (15 MFI frame of 64 byte)
3798 *
3799 * Fusion adapter require only 3 extra frame.
3800 * max_num_sge = 16 (defined as MAX_IOCTL_SGE)
3801 * max_sge_sz = 12 byte (sizeof megasas_sge64)
3802 * Total 192 byte (3 MFI frame of 64 byte)
3803 */
3804 frame_count = instance->ctrl_context ? (3 + 1) : (15 + 1);
3805 total_sz = MEGAMFI_FRAME_SIZE * frame_count;
3806 /*
3807 * Use DMA pool facility provided by PCI layer
3808 */
3809 instance->frame_dma_pool = pci_pool_create("megasas frame pool",
3810 instance->pdev, total_sz, 256, 0);
3811
3812 if (!instance->frame_dma_pool) {
3813 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup frame pool\n");
3814 return -ENOMEM;
3815 }
3816
3817 instance->sense_dma_pool = pci_pool_create("megasas sense pool",
3818 instance->pdev, 128, 4, 0);
3819
3820 if (!instance->sense_dma_pool) {
3821 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup sense pool\n");
3822
3823 pci_pool_destroy(instance->frame_dma_pool);
3824 instance->frame_dma_pool = NULL;
3825
3826 return -ENOMEM;
3827 }
3828
3829 /*
3830 * Allocate and attach a frame to each of the commands in cmd_list.
3831 * By making cmd->index as the context instead of the &cmd, we can
3832 * always use 32bit context regardless of the architecture
3833 */
3834 for (i = 0; i < max_cmd; i++) {
3835
3836 cmd = instance->cmd_list[i];
3837
3838 cmd->frame = pci_pool_alloc(instance->frame_dma_pool,
3839 GFP_KERNEL, &cmd->frame_phys_addr);
3840
3841 cmd->sense = pci_pool_alloc(instance->sense_dma_pool,
3842 GFP_KERNEL, &cmd->sense_phys_addr);
3843
3844 /*
3845 * megasas_teardown_frame_pool() takes care of freeing
3846 * whatever has been allocated
3847 */
3848 if (!cmd->frame || !cmd->sense) {
3849 dev_printk(KERN_DEBUG, &instance->pdev->dev, "pci_pool_alloc failed\n");
3850 megasas_teardown_frame_pool(instance);
3851 return -ENOMEM;
3852 }
3853
3854 memset(cmd->frame, 0, total_sz);
3855 cmd->frame->io.context = cpu_to_le32(cmd->index);
3856 cmd->frame->io.pad_0 = 0;
3857 if (!instance->ctrl_context && reset_devices)
3858 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
3859 }
3860
3861 return 0;
3862 }
3863
3864 /**
3865 * megasas_free_cmds - Free all the cmds in the free cmd pool
3866 * @instance: Adapter soft state
3867 */
3868 void megasas_free_cmds(struct megasas_instance *instance)
3869 {
3870 int i;
3871
3872 /* First free the MFI frame pool */
3873 megasas_teardown_frame_pool(instance);
3874
3875 /* Free all the commands in the cmd_list */
3876 for (i = 0; i < instance->max_mfi_cmds; i++)
3877
3878 kfree(instance->cmd_list[i]);
3879
3880 /* Free the cmd_list buffer itself */
3881 kfree(instance->cmd_list);
3882 instance->cmd_list = NULL;
3883
3884 INIT_LIST_HEAD(&instance->cmd_pool);
3885 }
3886
3887 /**
3888 * megasas_alloc_cmds - Allocates the command packets
3889 * @instance: Adapter soft state
3890 *
3891 * Each command that is issued to the FW, whether IO commands from the OS or
3892 * internal commands like IOCTLs, are wrapped in local data structure called
3893 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
3894 * the FW.
3895 *
3896 * Each frame has a 32-bit field called context (tag). This context is used
3897 * to get back the megasas_cmd from the frame when a frame gets completed in
3898 * the ISR. Typically the address of the megasas_cmd itself would be used as
3899 * the context. But we wanted to keep the differences between 32 and 64 bit
3900 * systems to the mininum. We always use 32 bit integers for the context. In
3901 * this driver, the 32 bit values are the indices into an array cmd_list.
3902 * This array is used only to look up the megasas_cmd given the context. The
3903 * free commands themselves are maintained in a linked list called cmd_pool.
3904 */
3905 int megasas_alloc_cmds(struct megasas_instance *instance)
3906 {
3907 int i;
3908 int j;
3909 u32 max_cmd;
3910 struct megasas_cmd *cmd;
3911 struct fusion_context *fusion;
3912
3913 fusion = instance->ctrl_context;
3914 max_cmd = instance->max_mfi_cmds;
3915
3916 /*
3917 * instance->cmd_list is an array of struct megasas_cmd pointers.
3918 * Allocate the dynamic array first and then allocate individual
3919 * commands.
3920 */
3921 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
3922
3923 if (!instance->cmd_list) {
3924 dev_printk(KERN_DEBUG, &instance->pdev->dev, "out of memory\n");
3925 return -ENOMEM;
3926 }
3927
3928 memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd);
3929
3930 for (i = 0; i < max_cmd; i++) {
3931 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
3932 GFP_KERNEL);
3933
3934 if (!instance->cmd_list[i]) {
3935
3936 for (j = 0; j < i; j++)
3937 kfree(instance->cmd_list[j]);
3938
3939 kfree(instance->cmd_list);
3940 instance->cmd_list = NULL;
3941
3942 return -ENOMEM;
3943 }
3944 }
3945
3946 for (i = 0; i < max_cmd; i++) {
3947 cmd = instance->cmd_list[i];
3948 memset(cmd, 0, sizeof(struct megasas_cmd));
3949 cmd->index = i;
3950 cmd->scmd = NULL;
3951 cmd->instance = instance;
3952
3953 list_add_tail(&cmd->list, &instance->cmd_pool);
3954 }
3955
3956 /*
3957 * Create a frame pool and assign one frame to each cmd
3958 */
3959 if (megasas_create_frame_pool(instance)) {
3960 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error creating frame DMA pool\n");
3961 megasas_free_cmds(instance);
3962 return -ENOMEM;
3963 }
3964
3965 return 0;
3966 }
3967
3968 /*
3969 * dcmd_timeout_ocr_possible - Check if OCR is possible based on Driver/FW state.
3970 * @instance: Adapter soft state
3971 *
3972 * Return 0 for only Fusion adapter, if driver load/unload is not in progress
3973 * or FW is not under OCR.
3974 */
3975 inline int
3976 dcmd_timeout_ocr_possible(struct megasas_instance *instance) {
3977
3978 if (!instance->ctrl_context)
3979 return KILL_ADAPTER;
3980 else if (instance->unload ||
3981 test_bit(MEGASAS_FUSION_OCR_NOT_POSSIBLE,
3982 &instance->reset_flags))
3983 return IGNORE_TIMEOUT;
3984 else
3985 return INITIATE_OCR;
3986 }
3987
3988 static int
3989 megasas_get_pd_info(struct megasas_instance *instance, u16 device_id)
3990 {
3991 int ret;
3992 struct megasas_cmd *cmd;
3993 struct megasas_dcmd_frame *dcmd;
3994
3995 cmd = megasas_get_cmd(instance);
3996
3997 if (!cmd) {
3998 dev_err(&instance->pdev->dev, "Failed to get cmd %s\n", __func__);
3999 return -ENOMEM;
4000 }
4001
4002 dcmd = &cmd->frame->dcmd;
4003
4004 memset(instance->pd_info, 0, sizeof(*instance->pd_info));
4005 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4006
4007 dcmd->mbox.s[0] = cpu_to_le16(device_id);
4008 dcmd->cmd = MFI_CMD_DCMD;
4009 dcmd->cmd_status = 0xFF;
4010 dcmd->sge_count = 1;
4011 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4012 dcmd->timeout = 0;
4013 dcmd->pad_0 = 0;
4014 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_PD_INFO));
4015 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_GET_INFO);
4016 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->pd_info_h);
4017 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_PD_INFO));
4018
4019 if (instance->ctrl_context && !instance->mask_interrupts)
4020 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4021 else
4022 ret = megasas_issue_polled(instance, cmd);
4023
4024 switch (ret) {
4025 case DCMD_SUCCESS:
4026 instance->pd_list[device_id].interface =
4027 instance->pd_info->state.ddf.pdType.intf;
4028 break;
4029
4030 case DCMD_TIMEOUT:
4031
4032 switch (dcmd_timeout_ocr_possible(instance)) {
4033 case INITIATE_OCR:
4034 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4035 megasas_reset_fusion(instance->host,
4036 MFI_IO_TIMEOUT_OCR);
4037 break;
4038 case KILL_ADAPTER:
4039 megaraid_sas_kill_hba(instance);
4040 break;
4041 case IGNORE_TIMEOUT:
4042 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4043 __func__, __LINE__);
4044 break;
4045 }
4046
4047 break;
4048 }
4049
4050 if (ret != DCMD_TIMEOUT)
4051 megasas_return_cmd(instance, cmd);
4052
4053 return ret;
4054 }
4055 /*
4056 * megasas_get_pd_list_info - Returns FW's pd_list structure
4057 * @instance: Adapter soft state
4058 * @pd_list: pd_list structure
4059 *
4060 * Issues an internal command (DCMD) to get the FW's controller PD
4061 * list structure. This information is mainly used to find out SYSTEM
4062 * supported by the FW.
4063 */
4064 static int
4065 megasas_get_pd_list(struct megasas_instance *instance)
4066 {
4067 int ret = 0, pd_index = 0;
4068 struct megasas_cmd *cmd;
4069 struct megasas_dcmd_frame *dcmd;
4070 struct MR_PD_LIST *ci;
4071 struct MR_PD_ADDRESS *pd_addr;
4072 dma_addr_t ci_h = 0;
4073
4074 if (instance->pd_list_not_supported) {
4075 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4076 "not supported by firmware\n");
4077 return ret;
4078 }
4079
4080 cmd = megasas_get_cmd(instance);
4081
4082 if (!cmd) {
4083 dev_printk(KERN_DEBUG, &instance->pdev->dev, "(get_pd_list): Failed to get cmd\n");
4084 return -ENOMEM;
4085 }
4086
4087 dcmd = &cmd->frame->dcmd;
4088
4089 ci = pci_alloc_consistent(instance->pdev,
4090 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h);
4091
4092 if (!ci) {
4093 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for pd_list\n");
4094 megasas_return_cmd(instance, cmd);
4095 return -ENOMEM;
4096 }
4097
4098 memset(ci, 0, sizeof(*ci));
4099 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4100
4101 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
4102 dcmd->mbox.b[1] = 0;
4103 dcmd->cmd = MFI_CMD_DCMD;
4104 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4105 dcmd->sge_count = 1;
4106 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4107 dcmd->timeout = 0;
4108 dcmd->pad_0 = 0;
4109 dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
4110 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY);
4111 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
4112 dcmd->sgl.sge32[0].length = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
4113
4114 if (instance->ctrl_context && !instance->mask_interrupts)
4115 ret = megasas_issue_blocked_cmd(instance, cmd,
4116 MFI_IO_TIMEOUT_SECS);
4117 else
4118 ret = megasas_issue_polled(instance, cmd);
4119
4120 switch (ret) {
4121 case DCMD_FAILED:
4122 dev_info(&instance->pdev->dev, "MR_DCMD_PD_LIST_QUERY "
4123 "failed/not supported by firmware\n");
4124
4125 if (instance->ctrl_context)
4126 megaraid_sas_kill_hba(instance);
4127 else
4128 instance->pd_list_not_supported = 1;
4129 break;
4130 case DCMD_TIMEOUT:
4131
4132 switch (dcmd_timeout_ocr_possible(instance)) {
4133 case INITIATE_OCR:
4134 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4135 /*
4136 * DCMD failed from AEN path.
4137 * AEN path already hold reset_mutex to avoid PCI access
4138 * while OCR is in progress.
4139 */
4140 mutex_unlock(&instance->reset_mutex);
4141 megasas_reset_fusion(instance->host,
4142 MFI_IO_TIMEOUT_OCR);
4143 mutex_lock(&instance->reset_mutex);
4144 break;
4145 case KILL_ADAPTER:
4146 megaraid_sas_kill_hba(instance);
4147 break;
4148 case IGNORE_TIMEOUT:
4149 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d \n",
4150 __func__, __LINE__);
4151 break;
4152 }
4153
4154 break;
4155
4156 case DCMD_SUCCESS:
4157 pd_addr = ci->addr;
4158
4159 if ((le32_to_cpu(ci->count) >
4160 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL)))
4161 break;
4162
4163 memset(instance->local_pd_list, 0,
4164 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
4165
4166 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) {
4167 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid =
4168 le16_to_cpu(pd_addr->deviceId);
4169 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType =
4170 pd_addr->scsiDevType;
4171 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState =
4172 MR_PD_STATE_SYSTEM;
4173 pd_addr++;
4174 }
4175
4176 memcpy(instance->pd_list, instance->local_pd_list,
4177 sizeof(instance->pd_list));
4178 break;
4179
4180 }
4181
4182 pci_free_consistent(instance->pdev,
4183 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
4184 ci, ci_h);
4185
4186 if (ret != DCMD_TIMEOUT)
4187 megasas_return_cmd(instance, cmd);
4188
4189 return ret;
4190 }
4191
4192 /*
4193 * megasas_get_ld_list_info - Returns FW's ld_list structure
4194 * @instance: Adapter soft state
4195 * @ld_list: ld_list structure
4196 *
4197 * Issues an internal command (DCMD) to get the FW's controller PD
4198 * list structure. This information is mainly used to find out SYSTEM
4199 * supported by the FW.
4200 */
4201 static int
4202 megasas_get_ld_list(struct megasas_instance *instance)
4203 {
4204 int ret = 0, ld_index = 0, ids = 0;
4205 struct megasas_cmd *cmd;
4206 struct megasas_dcmd_frame *dcmd;
4207 struct MR_LD_LIST *ci;
4208 dma_addr_t ci_h = 0;
4209 u32 ld_count;
4210
4211 cmd = megasas_get_cmd(instance);
4212
4213 if (!cmd) {
4214 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_list: Failed to get cmd\n");
4215 return -ENOMEM;
4216 }
4217
4218 dcmd = &cmd->frame->dcmd;
4219
4220 ci = pci_alloc_consistent(instance->pdev,
4221 sizeof(struct MR_LD_LIST),
4222 &ci_h);
4223
4224 if (!ci) {
4225 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem in get_ld_list\n");
4226 megasas_return_cmd(instance, cmd);
4227 return -ENOMEM;
4228 }
4229
4230 memset(ci, 0, sizeof(*ci));
4231 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4232
4233 if (instance->supportmax256vd)
4234 dcmd->mbox.b[0] = 1;
4235 dcmd->cmd = MFI_CMD_DCMD;
4236 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4237 dcmd->sge_count = 1;
4238 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4239 dcmd->timeout = 0;
4240 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST));
4241 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST);
4242 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
4243 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_LIST));
4244 dcmd->pad_0 = 0;
4245
4246 if (instance->ctrl_context && !instance->mask_interrupts)
4247 ret = megasas_issue_blocked_cmd(instance, cmd,
4248 MFI_IO_TIMEOUT_SECS);
4249 else
4250 ret = megasas_issue_polled(instance, cmd);
4251
4252 ld_count = le32_to_cpu(ci->ldCount);
4253
4254 switch (ret) {
4255 case DCMD_FAILED:
4256 megaraid_sas_kill_hba(instance);
4257 break;
4258 case DCMD_TIMEOUT:
4259
4260 switch (dcmd_timeout_ocr_possible(instance)) {
4261 case INITIATE_OCR:
4262 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4263 /*
4264 * DCMD failed from AEN path.
4265 * AEN path already hold reset_mutex to avoid PCI access
4266 * while OCR is in progress.
4267 */
4268 mutex_unlock(&instance->reset_mutex);
4269 megasas_reset_fusion(instance->host,
4270 MFI_IO_TIMEOUT_OCR);
4271 mutex_lock(&instance->reset_mutex);
4272 break;
4273 case KILL_ADAPTER:
4274 megaraid_sas_kill_hba(instance);
4275 break;
4276 case IGNORE_TIMEOUT:
4277 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4278 __func__, __LINE__);
4279 break;
4280 }
4281
4282 break;
4283
4284 case DCMD_SUCCESS:
4285 if (ld_count > instance->fw_supported_vd_count)
4286 break;
4287
4288 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
4289
4290 for (ld_index = 0; ld_index < ld_count; ld_index++) {
4291 if (ci->ldList[ld_index].state != 0) {
4292 ids = ci->ldList[ld_index].ref.targetId;
4293 instance->ld_ids[ids] = ci->ldList[ld_index].ref.targetId;
4294 }
4295 }
4296
4297 break;
4298 }
4299
4300 pci_free_consistent(instance->pdev, sizeof(struct MR_LD_LIST), ci, ci_h);
4301
4302 if (ret != DCMD_TIMEOUT)
4303 megasas_return_cmd(instance, cmd);
4304
4305 return ret;
4306 }
4307
4308 /**
4309 * megasas_ld_list_query - Returns FW's ld_list structure
4310 * @instance: Adapter soft state
4311 * @ld_list: ld_list structure
4312 *
4313 * Issues an internal command (DCMD) to get the FW's controller PD
4314 * list structure. This information is mainly used to find out SYSTEM
4315 * supported by the FW.
4316 */
4317 static int
4318 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
4319 {
4320 int ret = 0, ld_index = 0, ids = 0;
4321 struct megasas_cmd *cmd;
4322 struct megasas_dcmd_frame *dcmd;
4323 struct MR_LD_TARGETID_LIST *ci;
4324 dma_addr_t ci_h = 0;
4325 u32 tgtid_count;
4326
4327 cmd = megasas_get_cmd(instance);
4328
4329 if (!cmd) {
4330 dev_warn(&instance->pdev->dev,
4331 "megasas_ld_list_query: Failed to get cmd\n");
4332 return -ENOMEM;
4333 }
4334
4335 dcmd = &cmd->frame->dcmd;
4336
4337 ci = pci_alloc_consistent(instance->pdev,
4338 sizeof(struct MR_LD_TARGETID_LIST), &ci_h);
4339
4340 if (!ci) {
4341 dev_warn(&instance->pdev->dev,
4342 "Failed to alloc mem for ld_list_query\n");
4343 megasas_return_cmd(instance, cmd);
4344 return -ENOMEM;
4345 }
4346
4347 memset(ci, 0, sizeof(*ci));
4348 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4349
4350 dcmd->mbox.b[0] = query_type;
4351 if (instance->supportmax256vd)
4352 dcmd->mbox.b[2] = 1;
4353
4354 dcmd->cmd = MFI_CMD_DCMD;
4355 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4356 dcmd->sge_count = 1;
4357 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4358 dcmd->timeout = 0;
4359 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
4360 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY);
4361 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
4362 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
4363 dcmd->pad_0 = 0;
4364
4365 if (instance->ctrl_context && !instance->mask_interrupts)
4366 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4367 else
4368 ret = megasas_issue_polled(instance, cmd);
4369
4370 switch (ret) {
4371 case DCMD_FAILED:
4372 dev_info(&instance->pdev->dev,
4373 "DCMD not supported by firmware - %s %d\n",
4374 __func__, __LINE__);
4375 ret = megasas_get_ld_list(instance);
4376 break;
4377 case DCMD_TIMEOUT:
4378 switch (dcmd_timeout_ocr_possible(instance)) {
4379 case INITIATE_OCR:
4380 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4381 /*
4382 * DCMD failed from AEN path.
4383 * AEN path already hold reset_mutex to avoid PCI access
4384 * while OCR is in progress.
4385 */
4386 mutex_unlock(&instance->reset_mutex);
4387 megasas_reset_fusion(instance->host,
4388 MFI_IO_TIMEOUT_OCR);
4389 mutex_lock(&instance->reset_mutex);
4390 break;
4391 case KILL_ADAPTER:
4392 megaraid_sas_kill_hba(instance);
4393 break;
4394 case IGNORE_TIMEOUT:
4395 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4396 __func__, __LINE__);
4397 break;
4398 }
4399
4400 break;
4401 case DCMD_SUCCESS:
4402 tgtid_count = le32_to_cpu(ci->count);
4403
4404 if ((tgtid_count > (instance->fw_supported_vd_count)))
4405 break;
4406
4407 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
4408 for (ld_index = 0; ld_index < tgtid_count; ld_index++) {
4409 ids = ci->targetId[ld_index];
4410 instance->ld_ids[ids] = ci->targetId[ld_index];
4411 }
4412
4413 break;
4414 }
4415
4416 pci_free_consistent(instance->pdev, sizeof(struct MR_LD_TARGETID_LIST),
4417 ci, ci_h);
4418
4419 if (ret != DCMD_TIMEOUT)
4420 megasas_return_cmd(instance, cmd);
4421
4422 return ret;
4423 }
4424
4425 /*
4426 * megasas_update_ext_vd_details : Update details w.r.t Extended VD
4427 * instance : Controller's instance
4428 */
4429 static void megasas_update_ext_vd_details(struct megasas_instance *instance)
4430 {
4431 struct fusion_context *fusion;
4432 u32 old_map_sz;
4433 u32 new_map_sz;
4434
4435 fusion = instance->ctrl_context;
4436 /* For MFI based controllers return dummy success */
4437 if (!fusion)
4438 return;
4439
4440 instance->supportmax256vd =
4441 instance->ctrl_info->adapterOperations3.supportMaxExtLDs;
4442 /* Below is additional check to address future FW enhancement */
4443 if (instance->ctrl_info->max_lds > 64)
4444 instance->supportmax256vd = 1;
4445
4446 instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS
4447 * MEGASAS_MAX_DEV_PER_CHANNEL;
4448 instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS
4449 * MEGASAS_MAX_DEV_PER_CHANNEL;
4450 if (instance->supportmax256vd) {
4451 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT;
4452 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
4453 } else {
4454 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
4455 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
4456 }
4457
4458 dev_info(&instance->pdev->dev,
4459 "firmware type\t: %s\n",
4460 instance->supportmax256vd ? "Extended VD(240 VD)firmware" :
4461 "Legacy(64 VD) firmware");
4462
4463 old_map_sz = sizeof(struct MR_FW_RAID_MAP) +
4464 (sizeof(struct MR_LD_SPAN_MAP) *
4465 (instance->fw_supported_vd_count - 1));
4466 new_map_sz = sizeof(struct MR_FW_RAID_MAP_EXT);
4467 fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP) +
4468 (sizeof(struct MR_LD_SPAN_MAP) *
4469 (instance->drv_supported_vd_count - 1));
4470
4471 fusion->max_map_sz = max(old_map_sz, new_map_sz);
4472
4473
4474 if (instance->supportmax256vd)
4475 fusion->current_map_sz = new_map_sz;
4476 else
4477 fusion->current_map_sz = old_map_sz;
4478 }
4479
4480 /**
4481 * megasas_get_controller_info - Returns FW's controller structure
4482 * @instance: Adapter soft state
4483 *
4484 * Issues an internal command (DCMD) to get the FW's controller structure.
4485 * This information is mainly used to find out the maximum IO transfer per
4486 * command supported by the FW.
4487 */
4488 int
4489 megasas_get_ctrl_info(struct megasas_instance *instance)
4490 {
4491 int ret = 0;
4492 struct megasas_cmd *cmd;
4493 struct megasas_dcmd_frame *dcmd;
4494 struct megasas_ctrl_info *ci;
4495 struct megasas_ctrl_info *ctrl_info;
4496 dma_addr_t ci_h = 0;
4497
4498 ctrl_info = instance->ctrl_info;
4499
4500 cmd = megasas_get_cmd(instance);
4501
4502 if (!cmd) {
4503 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a free cmd\n");
4504 return -ENOMEM;
4505 }
4506
4507 dcmd = &cmd->frame->dcmd;
4508
4509 ci = pci_alloc_consistent(instance->pdev,
4510 sizeof(struct megasas_ctrl_info), &ci_h);
4511
4512 if (!ci) {
4513 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for ctrl info\n");
4514 megasas_return_cmd(instance, cmd);
4515 return -ENOMEM;
4516 }
4517
4518 memset(ci, 0, sizeof(*ci));
4519 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4520
4521 dcmd->cmd = MFI_CMD_DCMD;
4522 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4523 dcmd->sge_count = 1;
4524 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4525 dcmd->timeout = 0;
4526 dcmd->pad_0 = 0;
4527 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info));
4528 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO);
4529 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
4530 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_ctrl_info));
4531 dcmd->mbox.b[0] = 1;
4532
4533 if (instance->ctrl_context && !instance->mask_interrupts)
4534 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4535 else
4536 ret = megasas_issue_polled(instance, cmd);
4537
4538 switch (ret) {
4539 case DCMD_SUCCESS:
4540 memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info));
4541 /* Save required controller information in
4542 * CPU endianness format.
4543 */
4544 le32_to_cpus((u32 *)&ctrl_info->properties.OnOffProperties);
4545 le32_to_cpus((u32 *)&ctrl_info->adapterOperations2);
4546 le32_to_cpus((u32 *)&ctrl_info->adapterOperations3);
4547
4548 /* Update the latest Ext VD info.
4549 * From Init path, store current firmware details.
4550 * From OCR path, detect any firmware properties changes.
4551 * in case of Firmware upgrade without system reboot.
4552 */
4553 megasas_update_ext_vd_details(instance);
4554 instance->use_seqnum_jbod_fp =
4555 ctrl_info->adapterOperations3.useSeqNumJbodFP;
4556
4557 /*Check whether controller is iMR or MR */
4558 instance->is_imr = (ctrl_info->memory_size ? 0 : 1);
4559 dev_info(&instance->pdev->dev,
4560 "controller type\t: %s(%dMB)\n",
4561 instance->is_imr ? "iMR" : "MR",
4562 le16_to_cpu(ctrl_info->memory_size));
4563
4564 instance->disableOnlineCtrlReset =
4565 ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset;
4566 instance->secure_jbod_support =
4567 ctrl_info->adapterOperations3.supportSecurityonJBOD;
4568 dev_info(&instance->pdev->dev, "Online Controller Reset(OCR)\t: %s\n",
4569 instance->disableOnlineCtrlReset ? "Disabled" : "Enabled");
4570 dev_info(&instance->pdev->dev, "Secure JBOD support\t: %s\n",
4571 instance->secure_jbod_support ? "Yes" : "No");
4572 break;
4573
4574 case DCMD_TIMEOUT:
4575 switch (dcmd_timeout_ocr_possible(instance)) {
4576 case INITIATE_OCR:
4577 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4578 megasas_reset_fusion(instance->host,
4579 MFI_IO_TIMEOUT_OCR);
4580 break;
4581 case KILL_ADAPTER:
4582 megaraid_sas_kill_hba(instance);
4583 break;
4584 case IGNORE_TIMEOUT:
4585 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4586 __func__, __LINE__);
4587 break;
4588 }
4589 case DCMD_FAILED:
4590 megaraid_sas_kill_hba(instance);
4591 break;
4592
4593 }
4594
4595 pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info),
4596 ci, ci_h);
4597
4598 megasas_return_cmd(instance, cmd);
4599
4600
4601 return ret;
4602 }
4603
4604 /*
4605 * megasas_set_crash_dump_params - Sends address of crash dump DMA buffer
4606 * to firmware
4607 *
4608 * @instance: Adapter soft state
4609 * @crash_buf_state - tell FW to turn ON/OFF crash dump feature
4610 MR_CRASH_BUF_TURN_OFF = 0
4611 MR_CRASH_BUF_TURN_ON = 1
4612 * @return 0 on success non-zero on failure.
4613 * Issues an internal command (DCMD) to set parameters for crash dump feature.
4614 * Driver will send address of crash dump DMA buffer and set mbox to tell FW
4615 * that driver supports crash dump feature. This DCMD will be sent only if
4616 * crash dump feature is supported by the FW.
4617 *
4618 */
4619 int megasas_set_crash_dump_params(struct megasas_instance *instance,
4620 u8 crash_buf_state)
4621 {
4622 int ret = 0;
4623 struct megasas_cmd *cmd;
4624 struct megasas_dcmd_frame *dcmd;
4625
4626 cmd = megasas_get_cmd(instance);
4627
4628 if (!cmd) {
4629 dev_err(&instance->pdev->dev, "Failed to get a free cmd\n");
4630 return -ENOMEM;
4631 }
4632
4633
4634 dcmd = &cmd->frame->dcmd;
4635
4636 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4637 dcmd->mbox.b[0] = crash_buf_state;
4638 dcmd->cmd = MFI_CMD_DCMD;
4639 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4640 dcmd->sge_count = 1;
4641 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
4642 dcmd->timeout = 0;
4643 dcmd->pad_0 = 0;
4644 dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE);
4645 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS);
4646 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->crash_dump_h);
4647 dcmd->sgl.sge32[0].length = cpu_to_le32(CRASH_DMA_BUF_SIZE);
4648
4649 if (instance->ctrl_context && !instance->mask_interrupts)
4650 ret = megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS);
4651 else
4652 ret = megasas_issue_polled(instance, cmd);
4653
4654 if (ret == DCMD_TIMEOUT) {
4655 switch (dcmd_timeout_ocr_possible(instance)) {
4656 case INITIATE_OCR:
4657 cmd->flags |= DRV_DCMD_SKIP_REFIRE;
4658 megasas_reset_fusion(instance->host,
4659 MFI_IO_TIMEOUT_OCR);
4660 break;
4661 case KILL_ADAPTER:
4662 megaraid_sas_kill_hba(instance);
4663 break;
4664 case IGNORE_TIMEOUT:
4665 dev_info(&instance->pdev->dev, "Ignore DCMD timeout: %s %d\n",
4666 __func__, __LINE__);
4667 break;
4668 }
4669 } else
4670 megasas_return_cmd(instance, cmd);
4671
4672 return ret;
4673 }
4674
4675 /**
4676 * megasas_issue_init_mfi - Initializes the FW
4677 * @instance: Adapter soft state
4678 *
4679 * Issues the INIT MFI cmd
4680 */
4681 static int
4682 megasas_issue_init_mfi(struct megasas_instance *instance)
4683 {
4684 __le32 context;
4685 struct megasas_cmd *cmd;
4686 struct megasas_init_frame *init_frame;
4687 struct megasas_init_queue_info *initq_info;
4688 dma_addr_t init_frame_h;
4689 dma_addr_t initq_info_h;
4690
4691 /*
4692 * Prepare a init frame. Note the init frame points to queue info
4693 * structure. Each frame has SGL allocated after first 64 bytes. For
4694 * this frame - since we don't need any SGL - we use SGL's space as
4695 * queue info structure
4696 *
4697 * We will not get a NULL command below. We just created the pool.
4698 */
4699 cmd = megasas_get_cmd(instance);
4700
4701 init_frame = (struct megasas_init_frame *)cmd->frame;
4702 initq_info = (struct megasas_init_queue_info *)
4703 ((unsigned long)init_frame + 64);
4704
4705 init_frame_h = cmd->frame_phys_addr;
4706 initq_info_h = init_frame_h + 64;
4707
4708 context = init_frame->context;
4709 memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
4710 memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
4711 init_frame->context = context;
4712
4713 initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1);
4714 initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h);
4715
4716 initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h);
4717 initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h);
4718
4719 init_frame->cmd = MFI_CMD_INIT;
4720 init_frame->cmd_status = MFI_STAT_INVALID_STATUS;
4721 init_frame->queue_info_new_phys_addr_lo =
4722 cpu_to_le32(lower_32_bits(initq_info_h));
4723 init_frame->queue_info_new_phys_addr_hi =
4724 cpu_to_le32(upper_32_bits(initq_info_h));
4725
4726 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info));
4727
4728 /*
4729 * disable the intr before firing the init frame to FW
4730 */
4731 instance->instancet->disable_intr(instance);
4732
4733 /*
4734 * Issue the init frame in polled mode
4735 */
4736
4737 if (megasas_issue_polled(instance, cmd)) {
4738 dev_err(&instance->pdev->dev, "Failed to init firmware\n");
4739 megasas_return_cmd(instance, cmd);
4740 goto fail_fw_init;
4741 }
4742
4743 megasas_return_cmd(instance, cmd);
4744
4745 return 0;
4746
4747 fail_fw_init:
4748 return -EINVAL;
4749 }
4750
4751 static u32
4752 megasas_init_adapter_mfi(struct megasas_instance *instance)
4753 {
4754 struct megasas_register_set __iomem *reg_set;
4755 u32 context_sz;
4756 u32 reply_q_sz;
4757
4758 reg_set = instance->reg_set;
4759
4760 /*
4761 * Get various operational parameters from status register
4762 */
4763 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF;
4764 /*
4765 * Reduce the max supported cmds by 1. This is to ensure that the
4766 * reply_q_sz (1 more than the max cmd that driver may send)
4767 * does not exceed max cmds that the FW can support
4768 */
4769 instance->max_fw_cmds = instance->max_fw_cmds-1;
4770 instance->max_mfi_cmds = instance->max_fw_cmds;
4771 instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >>
4772 0x10;
4773 /*
4774 * For MFI skinny adapters, MEGASAS_SKINNY_INT_CMDS commands
4775 * are reserved for IOCTL + driver's internal DCMDs.
4776 */
4777 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4778 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
4779 instance->max_scsi_cmds = (instance->max_fw_cmds -
4780 MEGASAS_SKINNY_INT_CMDS);
4781 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
4782 } else {
4783 instance->max_scsi_cmds = (instance->max_fw_cmds -
4784 MEGASAS_INT_CMDS);
4785 sema_init(&instance->ioctl_sem, (MEGASAS_MFI_IOCTL_CMDS));
4786 }
4787
4788 instance->cur_can_queue = instance->max_scsi_cmds;
4789 /*
4790 * Create a pool of commands
4791 */
4792 if (megasas_alloc_cmds(instance))
4793 goto fail_alloc_cmds;
4794
4795 /*
4796 * Allocate memory for reply queue. Length of reply queue should
4797 * be _one_ more than the maximum commands handled by the firmware.
4798 *
4799 * Note: When FW completes commands, it places corresponding contex
4800 * values in this circular reply queue. This circular queue is a fairly
4801 * typical producer-consumer queue. FW is the producer (of completed
4802 * commands) and the driver is the consumer.
4803 */
4804 context_sz = sizeof(u32);
4805 reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
4806
4807 instance->reply_queue = pci_alloc_consistent(instance->pdev,
4808 reply_q_sz,
4809 &instance->reply_queue_h);
4810
4811 if (!instance->reply_queue) {
4812 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Out of DMA mem for reply queue\n");
4813 goto fail_reply_queue;
4814 }
4815
4816 if (megasas_issue_init_mfi(instance))
4817 goto fail_fw_init;
4818
4819 if (megasas_get_ctrl_info(instance)) {
4820 dev_err(&instance->pdev->dev, "(%d): Could get controller info "
4821 "Fail from %s %d\n", instance->unique_id,
4822 __func__, __LINE__);
4823 goto fail_fw_init;
4824 }
4825
4826 instance->fw_support_ieee = 0;
4827 instance->fw_support_ieee =
4828 (instance->instancet->read_fw_status_reg(reg_set) &
4829 0x04000000);
4830
4831 dev_notice(&instance->pdev->dev, "megasas_init_mfi: fw_support_ieee=%d",
4832 instance->fw_support_ieee);
4833
4834 if (instance->fw_support_ieee)
4835 instance->flag_ieee = 1;
4836
4837 return 0;
4838
4839 fail_fw_init:
4840
4841 pci_free_consistent(instance->pdev, reply_q_sz,
4842 instance->reply_queue, instance->reply_queue_h);
4843 fail_reply_queue:
4844 megasas_free_cmds(instance);
4845
4846 fail_alloc_cmds:
4847 return 1;
4848 }
4849
4850 /*
4851 * megasas_setup_irqs_msix - register legacy interrupts.
4852 * @instance: Adapter soft state
4853 *
4854 * Do not enable interrupt, only setup ISRs.
4855 *
4856 * Return 0 on success.
4857 */
4858 static int
4859 megasas_setup_irqs_ioapic(struct megasas_instance *instance)
4860 {
4861 struct pci_dev *pdev;
4862
4863 pdev = instance->pdev;
4864 instance->irq_context[0].instance = instance;
4865 instance->irq_context[0].MSIxIndex = 0;
4866 if (request_irq(pdev->irq, instance->instancet->service_isr,
4867 IRQF_SHARED, "megasas", &instance->irq_context[0])) {
4868 dev_err(&instance->pdev->dev,
4869 "Failed to register IRQ from %s %d\n",
4870 __func__, __LINE__);
4871 return -1;
4872 }
4873 return 0;
4874 }
4875
4876 /**
4877 * megasas_setup_irqs_msix - register MSI-x interrupts.
4878 * @instance: Adapter soft state
4879 * @is_probe: Driver probe check
4880 *
4881 * Do not enable interrupt, only setup ISRs.
4882 *
4883 * Return 0 on success.
4884 */
4885 static int
4886 megasas_setup_irqs_msix(struct megasas_instance *instance, u8 is_probe)
4887 {
4888 int i, j, cpu;
4889 struct pci_dev *pdev;
4890
4891 pdev = instance->pdev;
4892
4893 /* Try MSI-x */
4894 cpu = cpumask_first(cpu_online_mask);
4895 for (i = 0; i < instance->msix_vectors; i++) {
4896 instance->irq_context[i].instance = instance;
4897 instance->irq_context[i].MSIxIndex = i;
4898 if (request_irq(instance->msixentry[i].vector,
4899 instance->instancet->service_isr, 0, "megasas",
4900 &instance->irq_context[i])) {
4901 dev_err(&instance->pdev->dev,
4902 "Failed to register IRQ for vector %d.\n", i);
4903 for (j = 0; j < i; j++) {
4904 if (smp_affinity_enable)
4905 irq_set_affinity_hint(
4906 instance->msixentry[j].vector, NULL);
4907 free_irq(instance->msixentry[j].vector,
4908 &instance->irq_context[j]);
4909 }
4910 /* Retry irq register for IO_APIC*/
4911 instance->msix_vectors = 0;
4912 if (is_probe)
4913 return megasas_setup_irqs_ioapic(instance);
4914 else
4915 return -1;
4916 }
4917 if (smp_affinity_enable) {
4918 if (irq_set_affinity_hint(instance->msixentry[i].vector,
4919 get_cpu_mask(cpu)))
4920 dev_err(&instance->pdev->dev,
4921 "Failed to set affinity hint"
4922 " for cpu %d\n", cpu);
4923 cpu = cpumask_next(cpu, cpu_online_mask);
4924 }
4925 }
4926 return 0;
4927 }
4928
4929 /*
4930 * megasas_destroy_irqs- unregister interrupts.
4931 * @instance: Adapter soft state
4932 * return: void
4933 */
4934 static void
4935 megasas_destroy_irqs(struct megasas_instance *instance) {
4936
4937 int i;
4938
4939 if (instance->msix_vectors)
4940 for (i = 0; i < instance->msix_vectors; i++) {
4941 if (smp_affinity_enable)
4942 irq_set_affinity_hint(
4943 instance->msixentry[i].vector, NULL);
4944 free_irq(instance->msixentry[i].vector,
4945 &instance->irq_context[i]);
4946 }
4947 else
4948 free_irq(instance->pdev->irq, &instance->irq_context[0]);
4949 }
4950
4951 /**
4952 * megasas_setup_jbod_map - setup jbod map for FP seq_number.
4953 * @instance: Adapter soft state
4954 * @is_probe: Driver probe check
4955 *
4956 * Return 0 on success.
4957 */
4958 void
4959 megasas_setup_jbod_map(struct megasas_instance *instance)
4960 {
4961 int i;
4962 struct fusion_context *fusion = instance->ctrl_context;
4963 u32 pd_seq_map_sz;
4964
4965 pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
4966 (sizeof(struct MR_PD_CFG_SEQ) * (MAX_PHYSICAL_DEVICES - 1));
4967
4968 if (reset_devices || !fusion ||
4969 !instance->ctrl_info->adapterOperations3.useSeqNumJbodFP) {
4970 dev_info(&instance->pdev->dev,
4971 "Jbod map is not supported %s %d\n",
4972 __func__, __LINE__);
4973 instance->use_seqnum_jbod_fp = false;
4974 return;
4975 }
4976
4977 if (fusion->pd_seq_sync[0])
4978 goto skip_alloc;
4979
4980 for (i = 0; i < JBOD_MAPS_COUNT; i++) {
4981 fusion->pd_seq_sync[i] = dma_alloc_coherent
4982 (&instance->pdev->dev, pd_seq_map_sz,
4983 &fusion->pd_seq_phys[i], GFP_KERNEL);
4984 if (!fusion->pd_seq_sync[i]) {
4985 dev_err(&instance->pdev->dev,
4986 "Failed to allocate memory from %s %d\n",
4987 __func__, __LINE__);
4988 if (i == 1) {
4989 dma_free_coherent(&instance->pdev->dev,
4990 pd_seq_map_sz, fusion->pd_seq_sync[0],
4991 fusion->pd_seq_phys[0]);
4992 fusion->pd_seq_sync[0] = NULL;
4993 }
4994 instance->use_seqnum_jbod_fp = false;
4995 return;
4996 }
4997 }
4998
4999 skip_alloc:
5000 if (!megasas_sync_pd_seq_num(instance, false) &&
5001 !megasas_sync_pd_seq_num(instance, true))
5002 instance->use_seqnum_jbod_fp = true;
5003 else
5004 instance->use_seqnum_jbod_fp = false;
5005 }
5006
5007 /**
5008 * megasas_init_fw - Initializes the FW
5009 * @instance: Adapter soft state
5010 *
5011 * This is the main function for initializing firmware
5012 */
5013
5014 static int megasas_init_fw(struct megasas_instance *instance)
5015 {
5016 u32 max_sectors_1;
5017 u32 max_sectors_2;
5018 u32 tmp_sectors, msix_enable, scratch_pad_2;
5019 resource_size_t base_addr;
5020 struct megasas_register_set __iomem *reg_set;
5021 struct megasas_ctrl_info *ctrl_info = NULL;
5022 unsigned long bar_list;
5023 int i, loop, fw_msix_count = 0;
5024 struct IOV_111 *iovPtr;
5025 struct fusion_context *fusion;
5026
5027 fusion = instance->ctrl_context;
5028
5029 /* Find first memory bar */
5030 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
5031 instance->bar = find_first_bit(&bar_list, BITS_PER_LONG);
5032 if (pci_request_selected_regions(instance->pdev, 1<<instance->bar,
5033 "megasas: LSI")) {
5034 dev_printk(KERN_DEBUG, &instance->pdev->dev, "IO memory region busy!\n");
5035 return -EBUSY;
5036 }
5037
5038 base_addr = pci_resource_start(instance->pdev, instance->bar);
5039 instance->reg_set = ioremap_nocache(base_addr, 8192);
5040
5041 if (!instance->reg_set) {
5042 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to map IO mem\n");
5043 goto fail_ioremap;
5044 }
5045
5046 reg_set = instance->reg_set;
5047
5048 switch (instance->pdev->device) {
5049 case PCI_DEVICE_ID_LSI_FUSION:
5050 case PCI_DEVICE_ID_LSI_PLASMA:
5051 case PCI_DEVICE_ID_LSI_INVADER:
5052 case PCI_DEVICE_ID_LSI_FURY:
5053 case PCI_DEVICE_ID_LSI_INTRUDER:
5054 case PCI_DEVICE_ID_LSI_INTRUDER_24:
5055 case PCI_DEVICE_ID_LSI_CUTLASS_52:
5056 case PCI_DEVICE_ID_LSI_CUTLASS_53:
5057 instance->instancet = &megasas_instance_template_fusion;
5058 break;
5059 case PCI_DEVICE_ID_LSI_SAS1078R:
5060 case PCI_DEVICE_ID_LSI_SAS1078DE:
5061 instance->instancet = &megasas_instance_template_ppc;
5062 break;
5063 case PCI_DEVICE_ID_LSI_SAS1078GEN2:
5064 case PCI_DEVICE_ID_LSI_SAS0079GEN2:
5065 instance->instancet = &megasas_instance_template_gen2;
5066 break;
5067 case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
5068 case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
5069 instance->instancet = &megasas_instance_template_skinny;
5070 break;
5071 case PCI_DEVICE_ID_LSI_SAS1064R:
5072 case PCI_DEVICE_ID_DELL_PERC5:
5073 default:
5074 instance->instancet = &megasas_instance_template_xscale;
5075 break;
5076 }
5077
5078 if (megasas_transition_to_ready(instance, 0)) {
5079 atomic_set(&instance->fw_reset_no_pci_access, 1);
5080 instance->instancet->adp_reset
5081 (instance, instance->reg_set);
5082 atomic_set(&instance->fw_reset_no_pci_access, 0);
5083 dev_info(&instance->pdev->dev,
5084 "FW restarted successfully from %s!\n",
5085 __func__);
5086
5087 /*waitting for about 30 second before retry*/
5088 ssleep(30);
5089
5090 if (megasas_transition_to_ready(instance, 0))
5091 goto fail_ready_state;
5092 }
5093
5094 /*
5095 * MSI-X host index 0 is common for all adapter.
5096 * It is used for all MPT based Adapters.
5097 */
5098 instance->reply_post_host_index_addr[0] =
5099 (u32 __iomem *)((u8 __iomem *)instance->reg_set +
5100 MPI2_REPLY_POST_HOST_INDEX_OFFSET);
5101
5102 /* Check if MSI-X is supported while in ready state */
5103 msix_enable = (instance->instancet->read_fw_status_reg(reg_set) &
5104 0x4000000) >> 0x1a;
5105 if (msix_enable && !msix_disable) {
5106 scratch_pad_2 = readl
5107 (&instance->reg_set->outbound_scratch_pad_2);
5108 /* Check max MSI-X vectors */
5109 if (fusion) {
5110 if (fusion->adapter_type == THUNDERBOLT_SERIES) { /* Thunderbolt Series*/
5111 instance->msix_vectors = (scratch_pad_2
5112 & MR_MAX_REPLY_QUEUES_OFFSET) + 1;
5113 fw_msix_count = instance->msix_vectors;
5114 } else { /* Invader series supports more than 8 MSI-x vectors*/
5115 instance->msix_vectors = ((scratch_pad_2
5116 & MR_MAX_REPLY_QUEUES_EXT_OFFSET)
5117 >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1;
5118 if (rdpq_enable)
5119 instance->is_rdpq = (scratch_pad_2 & MR_RDPQ_MODE_OFFSET) ?
5120 1 : 0;
5121 fw_msix_count = instance->msix_vectors;
5122 /* Save 1-15 reply post index address to local memory
5123 * Index 0 is already saved from reg offset
5124 * MPI2_REPLY_POST_HOST_INDEX_OFFSET
5125 */
5126 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) {
5127 instance->reply_post_host_index_addr[loop] =
5128 (u32 __iomem *)
5129 ((u8 __iomem *)instance->reg_set +
5130 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET
5131 + (loop * 0x10));
5132 }
5133 }
5134 if (msix_vectors)
5135 instance->msix_vectors = min(msix_vectors,
5136 instance->msix_vectors);
5137 } else /* MFI adapters */
5138 instance->msix_vectors = 1;
5139 /* Don't bother allocating more MSI-X vectors than cpus */
5140 instance->msix_vectors = min(instance->msix_vectors,
5141 (unsigned int)num_online_cpus());
5142 for (i = 0; i < instance->msix_vectors; i++)
5143 instance->msixentry[i].entry = i;
5144 i = pci_enable_msix_range(instance->pdev, instance->msixentry,
5145 1, instance->msix_vectors);
5146 if (i > 0)
5147 instance->msix_vectors = i;
5148 else
5149 instance->msix_vectors = 0;
5150 }
5151
5152 dev_info(&instance->pdev->dev,
5153 "firmware supports msix\t: (%d)", fw_msix_count);
5154 dev_info(&instance->pdev->dev,
5155 "current msix/online cpus\t: (%d/%d)\n",
5156 instance->msix_vectors, (unsigned int)num_online_cpus());
5157 dev_info(&instance->pdev->dev,
5158 "RDPQ mode\t: (%s)\n", instance->is_rdpq ? "enabled" : "disabled");
5159
5160 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
5161 (unsigned long)instance);
5162
5163 if (instance->msix_vectors ?
5164 megasas_setup_irqs_msix(instance, 1) :
5165 megasas_setup_irqs_ioapic(instance))
5166 goto fail_setup_irqs;
5167
5168 instance->ctrl_info = kzalloc(sizeof(struct megasas_ctrl_info),
5169 GFP_KERNEL);
5170 if (instance->ctrl_info == NULL)
5171 goto fail_init_adapter;
5172
5173 /*
5174 * Below are default value for legacy Firmware.
5175 * non-fusion based controllers
5176 */
5177 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
5178 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
5179 /* Get operational params, sge flags, send init cmd to controller */
5180 if (instance->instancet->init_adapter(instance))
5181 goto fail_init_adapter;
5182
5183
5184 instance->instancet->enable_intr(instance);
5185
5186 dev_info(&instance->pdev->dev, "INIT adapter done\n");
5187
5188 megasas_setup_jbod_map(instance);
5189
5190 /** for passthrough
5191 * the following function will get the PD LIST.
5192 */
5193 memset(instance->pd_list, 0,
5194 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)));
5195 if (megasas_get_pd_list(instance) < 0) {
5196 dev_err(&instance->pdev->dev, "failed to get PD list\n");
5197 goto fail_get_pd_list;
5198 }
5199
5200 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
5201 if (megasas_ld_list_query(instance,
5202 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
5203 megasas_get_ld_list(instance);
5204
5205 /*
5206 * Compute the max allowed sectors per IO: The controller info has two
5207 * limits on max sectors. Driver should use the minimum of these two.
5208 *
5209 * 1 << stripe_sz_ops.min = max sectors per strip
5210 *
5211 * Note that older firmwares ( < FW ver 30) didn't report information
5212 * to calculate max_sectors_1. So the number ended up as zero always.
5213 */
5214 tmp_sectors = 0;
5215 ctrl_info = instance->ctrl_info;
5216
5217 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
5218 le16_to_cpu(ctrl_info->max_strips_per_io);
5219 max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size);
5220
5221 tmp_sectors = min_t(u32, max_sectors_1, max_sectors_2);
5222
5223 instance->peerIsPresent = ctrl_info->cluster.peerIsPresent;
5224 instance->passive = ctrl_info->cluster.passive;
5225 memcpy(instance->clusterId, ctrl_info->clusterId, sizeof(instance->clusterId));
5226 instance->UnevenSpanSupport =
5227 ctrl_info->adapterOperations2.supportUnevenSpans;
5228 if (instance->UnevenSpanSupport) {
5229 struct fusion_context *fusion = instance->ctrl_context;
5230 if (MR_ValidateMapInfo(instance))
5231 fusion->fast_path_io = 1;
5232 else
5233 fusion->fast_path_io = 0;
5234
5235 }
5236 if (ctrl_info->host_interface.SRIOV) {
5237 instance->requestorId = ctrl_info->iov.requestorId;
5238 if (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) {
5239 if (!ctrl_info->adapterOperations2.activePassive)
5240 instance->PlasmaFW111 = 1;
5241
5242 dev_info(&instance->pdev->dev, "SR-IOV: firmware type: %s\n",
5243 instance->PlasmaFW111 ? "1.11" : "new");
5244
5245 if (instance->PlasmaFW111) {
5246 iovPtr = (struct IOV_111 *)
5247 ((unsigned char *)ctrl_info + IOV_111_OFFSET);
5248 instance->requestorId = iovPtr->requestorId;
5249 }
5250 }
5251 dev_info(&instance->pdev->dev, "SRIOV: VF requestorId %d\n",
5252 instance->requestorId);
5253 }
5254
5255 instance->crash_dump_fw_support =
5256 ctrl_info->adapterOperations3.supportCrashDump;
5257 instance->crash_dump_drv_support =
5258 (instance->crash_dump_fw_support &&
5259 instance->crash_dump_buf);
5260 if (instance->crash_dump_drv_support)
5261 megasas_set_crash_dump_params(instance,
5262 MR_CRASH_BUF_TURN_OFF);
5263
5264 else {
5265 if (instance->crash_dump_buf)
5266 pci_free_consistent(instance->pdev,
5267 CRASH_DMA_BUF_SIZE,
5268 instance->crash_dump_buf,
5269 instance->crash_dump_h);
5270 instance->crash_dump_buf = NULL;
5271 }
5272
5273
5274 dev_info(&instance->pdev->dev,
5275 "pci id\t\t: (0x%04x)/(0x%04x)/(0x%04x)/(0x%04x)\n",
5276 le16_to_cpu(ctrl_info->pci.vendor_id),
5277 le16_to_cpu(ctrl_info->pci.device_id),
5278 le16_to_cpu(ctrl_info->pci.sub_vendor_id),
5279 le16_to_cpu(ctrl_info->pci.sub_device_id));
5280 dev_info(&instance->pdev->dev, "unevenspan support : %s\n",
5281 instance->UnevenSpanSupport ? "yes" : "no");
5282 dev_info(&instance->pdev->dev, "firmware crash dump : %s\n",
5283 instance->crash_dump_drv_support ? "yes" : "no");
5284 dev_info(&instance->pdev->dev, "jbod sync map : %s\n",
5285 instance->use_seqnum_jbod_fp ? "yes" : "no");
5286
5287
5288 instance->max_sectors_per_req = instance->max_num_sge *
5289 SGE_BUFFER_SIZE / 512;
5290 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
5291 instance->max_sectors_per_req = tmp_sectors;
5292
5293 /* Check for valid throttlequeuedepth module parameter */
5294 if (throttlequeuedepth &&
5295 throttlequeuedepth <= instance->max_scsi_cmds)
5296 instance->throttlequeuedepth = throttlequeuedepth;
5297 else
5298 instance->throttlequeuedepth =
5299 MEGASAS_THROTTLE_QUEUE_DEPTH;
5300
5301 if ((resetwaittime < 1) ||
5302 (resetwaittime > MEGASAS_RESET_WAIT_TIME))
5303 resetwaittime = MEGASAS_RESET_WAIT_TIME;
5304
5305 if ((scmd_timeout < 10) || (scmd_timeout > MEGASAS_DEFAULT_CMD_TIMEOUT))
5306 scmd_timeout = MEGASAS_DEFAULT_CMD_TIMEOUT;
5307
5308 /* Launch SR-IOV heartbeat timer */
5309 if (instance->requestorId) {
5310 if (!megasas_sriov_start_heartbeat(instance, 1))
5311 megasas_start_timer(instance,
5312 &instance->sriov_heartbeat_timer,
5313 megasas_sriov_heartbeat_handler,
5314 MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
5315 else
5316 instance->skip_heartbeat_timer_del = 1;
5317 }
5318
5319 return 0;
5320
5321 fail_get_pd_list:
5322 instance->instancet->disable_intr(instance);
5323 fail_init_adapter:
5324 megasas_destroy_irqs(instance);
5325 fail_setup_irqs:
5326 if (instance->msix_vectors)
5327 pci_disable_msix(instance->pdev);
5328 instance->msix_vectors = 0;
5329 fail_ready_state:
5330 kfree(instance->ctrl_info);
5331 instance->ctrl_info = NULL;
5332 iounmap(instance->reg_set);
5333
5334 fail_ioremap:
5335 pci_release_selected_regions(instance->pdev, 1<<instance->bar);
5336
5337 return -EINVAL;
5338 }
5339
5340 /**
5341 * megasas_release_mfi - Reverses the FW initialization
5342 * @instance: Adapter soft state
5343 */
5344 static void megasas_release_mfi(struct megasas_instance *instance)
5345 {
5346 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
5347
5348 if (instance->reply_queue)
5349 pci_free_consistent(instance->pdev, reply_q_sz,
5350 instance->reply_queue, instance->reply_queue_h);
5351
5352 megasas_free_cmds(instance);
5353
5354 iounmap(instance->reg_set);
5355
5356 pci_release_selected_regions(instance->pdev, 1<<instance->bar);
5357 }
5358
5359 /**
5360 * megasas_get_seq_num - Gets latest event sequence numbers
5361 * @instance: Adapter soft state
5362 * @eli: FW event log sequence numbers information
5363 *
5364 * FW maintains a log of all events in a non-volatile area. Upper layers would
5365 * usually find out the latest sequence number of the events, the seq number at
5366 * the boot etc. They would "read" all the events below the latest seq number
5367 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
5368 * number), they would subsribe to AEN (asynchronous event notification) and
5369 * wait for the events to happen.
5370 */
5371 static int
5372 megasas_get_seq_num(struct megasas_instance *instance,
5373 struct megasas_evt_log_info *eli)
5374 {
5375 struct megasas_cmd *cmd;
5376 struct megasas_dcmd_frame *dcmd;
5377 struct megasas_evt_log_info *el_info;
5378 dma_addr_t el_info_h = 0;
5379
5380 cmd = megasas_get_cmd(instance);
5381
5382 if (!cmd) {
5383 return -ENOMEM;
5384 }
5385
5386 dcmd = &cmd->frame->dcmd;
5387 el_info = pci_alloc_consistent(instance->pdev,
5388 sizeof(struct megasas_evt_log_info),
5389 &el_info_h);
5390
5391 if (!el_info) {
5392 megasas_return_cmd(instance, cmd);
5393 return -ENOMEM;
5394 }
5395
5396 memset(el_info, 0, sizeof(*el_info));
5397 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5398
5399 dcmd->cmd = MFI_CMD_DCMD;
5400 dcmd->cmd_status = 0x0;
5401 dcmd->sge_count = 1;
5402 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
5403 dcmd->timeout = 0;
5404 dcmd->pad_0 = 0;
5405 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info));
5406 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO);
5407 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(el_info_h);
5408 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_log_info));
5409
5410 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS) ==
5411 DCMD_SUCCESS) {
5412 /*
5413 * Copy the data back into callers buffer
5414 */
5415 eli->newest_seq_num = el_info->newest_seq_num;
5416 eli->oldest_seq_num = el_info->oldest_seq_num;
5417 eli->clear_seq_num = el_info->clear_seq_num;
5418 eli->shutdown_seq_num = el_info->shutdown_seq_num;
5419 eli->boot_seq_num = el_info->boot_seq_num;
5420 } else
5421 dev_err(&instance->pdev->dev, "DCMD failed "
5422 "from %s\n", __func__);
5423
5424 pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info),
5425 el_info, el_info_h);
5426
5427 megasas_return_cmd(instance, cmd);
5428
5429 return 0;
5430 }
5431
5432 /**
5433 * megasas_register_aen - Registers for asynchronous event notification
5434 * @instance: Adapter soft state
5435 * @seq_num: The starting sequence number
5436 * @class_locale: Class of the event
5437 *
5438 * This function subscribes for AEN for events beyond the @seq_num. It requests
5439 * to be notified if and only if the event is of type @class_locale
5440 */
5441 static int
5442 megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
5443 u32 class_locale_word)
5444 {
5445 int ret_val;
5446 struct megasas_cmd *cmd;
5447 struct megasas_dcmd_frame *dcmd;
5448 union megasas_evt_class_locale curr_aen;
5449 union megasas_evt_class_locale prev_aen;
5450
5451 /*
5452 * If there an AEN pending already (aen_cmd), check if the
5453 * class_locale of that pending AEN is inclusive of the new
5454 * AEN request we currently have. If it is, then we don't have
5455 * to do anything. In other words, whichever events the current
5456 * AEN request is subscribing to, have already been subscribed
5457 * to.
5458 *
5459 * If the old_cmd is _not_ inclusive, then we have to abort
5460 * that command, form a class_locale that is superset of both
5461 * old and current and re-issue to the FW
5462 */
5463
5464 curr_aen.word = class_locale_word;
5465
5466 if (instance->aen_cmd) {
5467
5468 prev_aen.word =
5469 le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]);
5470
5471 if ((curr_aen.members.class < MFI_EVT_CLASS_DEBUG) ||
5472 (curr_aen.members.class > MFI_EVT_CLASS_DEAD)) {
5473 dev_info(&instance->pdev->dev,
5474 "%s %d out of range class %d send by application\n",
5475 __func__, __LINE__, curr_aen.members.class);
5476 return 0;
5477 }
5478
5479 /*
5480 * A class whose enum value is smaller is inclusive of all
5481 * higher values. If a PROGRESS (= -1) was previously
5482 * registered, then a new registration requests for higher
5483 * classes need not be sent to FW. They are automatically
5484 * included.
5485 *
5486 * Locale numbers don't have such hierarchy. They are bitmap
5487 * values
5488 */
5489 if ((prev_aen.members.class <= curr_aen.members.class) &&
5490 !((prev_aen.members.locale & curr_aen.members.locale) ^
5491 curr_aen.members.locale)) {
5492 /*
5493 * Previously issued event registration includes
5494 * current request. Nothing to do.
5495 */
5496 return 0;
5497 } else {
5498 curr_aen.members.locale |= prev_aen.members.locale;
5499
5500 if (prev_aen.members.class < curr_aen.members.class)
5501 curr_aen.members.class = prev_aen.members.class;
5502
5503 instance->aen_cmd->abort_aen = 1;
5504 ret_val = megasas_issue_blocked_abort_cmd(instance,
5505 instance->
5506 aen_cmd, 30);
5507
5508 if (ret_val) {
5509 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to abort "
5510 "previous AEN command\n");
5511 return ret_val;
5512 }
5513 }
5514 }
5515
5516 cmd = megasas_get_cmd(instance);
5517
5518 if (!cmd)
5519 return -ENOMEM;
5520
5521 dcmd = &cmd->frame->dcmd;
5522
5523 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
5524
5525 /*
5526 * Prepare DCMD for aen registration
5527 */
5528 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5529
5530 dcmd->cmd = MFI_CMD_DCMD;
5531 dcmd->cmd_status = 0x0;
5532 dcmd->sge_count = 1;
5533 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
5534 dcmd->timeout = 0;
5535 dcmd->pad_0 = 0;
5536 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail));
5537 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT);
5538 dcmd->mbox.w[0] = cpu_to_le32(seq_num);
5539 instance->last_seq_num = seq_num;
5540 dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word);
5541 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->evt_detail_h);
5542 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_detail));
5543
5544 if (instance->aen_cmd != NULL) {
5545 megasas_return_cmd(instance, cmd);
5546 return 0;
5547 }
5548
5549 /*
5550 * Store reference to the cmd used to register for AEN. When an
5551 * application wants us to register for AEN, we have to abort this
5552 * cmd and re-register with a new EVENT LOCALE supplied by that app
5553 */
5554 instance->aen_cmd = cmd;
5555
5556 /*
5557 * Issue the aen registration frame
5558 */
5559 instance->instancet->issue_dcmd(instance, cmd);
5560
5561 return 0;
5562 }
5563
5564 /**
5565 * megasas_start_aen - Subscribes to AEN during driver load time
5566 * @instance: Adapter soft state
5567 */
5568 static int megasas_start_aen(struct megasas_instance *instance)
5569 {
5570 struct megasas_evt_log_info eli;
5571 union megasas_evt_class_locale class_locale;
5572
5573 /*
5574 * Get the latest sequence number from FW
5575 */
5576 memset(&eli, 0, sizeof(eli));
5577
5578 if (megasas_get_seq_num(instance, &eli))
5579 return -1;
5580
5581 /*
5582 * Register AEN with FW for latest sequence number plus 1
5583 */
5584 class_locale.members.reserved = 0;
5585 class_locale.members.locale = MR_EVT_LOCALE_ALL;
5586 class_locale.members.class = MR_EVT_CLASS_DEBUG;
5587
5588 return megasas_register_aen(instance,
5589 le32_to_cpu(eli.newest_seq_num) + 1,
5590 class_locale.word);
5591 }
5592
5593 /**
5594 * megasas_io_attach - Attaches this driver to SCSI mid-layer
5595 * @instance: Adapter soft state
5596 */
5597 static int megasas_io_attach(struct megasas_instance *instance)
5598 {
5599 struct Scsi_Host *host = instance->host;
5600
5601 /*
5602 * Export parameters required by SCSI mid-layer
5603 */
5604 host->irq = instance->pdev->irq;
5605 host->unique_id = instance->unique_id;
5606 host->can_queue = instance->max_scsi_cmds;
5607 host->this_id = instance->init_id;
5608 host->sg_tablesize = instance->max_num_sge;
5609
5610 if (instance->fw_support_ieee)
5611 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
5612
5613 /*
5614 * Check if the module parameter value for max_sectors can be used
5615 */
5616 if (max_sectors && max_sectors < instance->max_sectors_per_req)
5617 instance->max_sectors_per_req = max_sectors;
5618 else {
5619 if (max_sectors) {
5620 if (((instance->pdev->device ==
5621 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
5622 (instance->pdev->device ==
5623 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
5624 (max_sectors <= MEGASAS_MAX_SECTORS)) {
5625 instance->max_sectors_per_req = max_sectors;
5626 } else {
5627 dev_info(&instance->pdev->dev, "max_sectors should be > 0"
5628 "and <= %d (or < 1MB for GEN2 controller)\n",
5629 instance->max_sectors_per_req);
5630 }
5631 }
5632 }
5633
5634 host->max_sectors = instance->max_sectors_per_req;
5635 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
5636 host->max_channel = MEGASAS_MAX_CHANNELS - 1;
5637 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
5638 host->max_lun = MEGASAS_MAX_LUN;
5639 host->max_cmd_len = 16;
5640
5641 /*
5642 * Notify the mid-layer about the new controller
5643 */
5644 if (scsi_add_host(host, &instance->pdev->dev)) {
5645 dev_err(&instance->pdev->dev,
5646 "Failed to add host from %s %d\n",
5647 __func__, __LINE__);
5648 return -ENODEV;
5649 }
5650
5651 return 0;
5652 }
5653
5654 static int
5655 megasas_set_dma_mask(struct pci_dev *pdev)
5656 {
5657 /*
5658 * All our controllers are capable of performing 64-bit DMA
5659 */
5660 if (IS_DMA64) {
5661 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) {
5662
5663 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
5664 goto fail_set_dma_mask;
5665 }
5666 } else {
5667 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
5668 goto fail_set_dma_mask;
5669 }
5670 /*
5671 * Ensure that all data structures are allocated in 32-bit
5672 * memory.
5673 */
5674 if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) {
5675 /* Try 32bit DMA mask and 32 bit Consistent dma mask */
5676 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))
5677 && !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
5678 dev_info(&pdev->dev, "set 32bit DMA mask"
5679 "and 32 bit consistent mask\n");
5680 else
5681 goto fail_set_dma_mask;
5682 }
5683
5684 return 0;
5685
5686 fail_set_dma_mask:
5687 return 1;
5688 }
5689
5690 /**
5691 * megasas_probe_one - PCI hotplug entry point
5692 * @pdev: PCI device structure
5693 * @id: PCI ids of supported hotplugged adapter
5694 */
5695 static int megasas_probe_one(struct pci_dev *pdev,
5696 const struct pci_device_id *id)
5697 {
5698 int rval, pos;
5699 struct Scsi_Host *host;
5700 struct megasas_instance *instance;
5701 u16 control = 0;
5702 struct fusion_context *fusion = NULL;
5703
5704 /* Reset MSI-X in the kdump kernel */
5705 if (reset_devices) {
5706 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
5707 if (pos) {
5708 pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS,
5709 &control);
5710 if (control & PCI_MSIX_FLAGS_ENABLE) {
5711 dev_info(&pdev->dev, "resetting MSI-X\n");
5712 pci_write_config_word(pdev,
5713 pos + PCI_MSIX_FLAGS,
5714 control &
5715 ~PCI_MSIX_FLAGS_ENABLE);
5716 }
5717 }
5718 }
5719
5720 /*
5721 * PCI prepping: enable device set bus mastering and dma mask
5722 */
5723 rval = pci_enable_device_mem(pdev);
5724
5725 if (rval) {
5726 return rval;
5727 }
5728
5729 pci_set_master(pdev);
5730
5731 if (megasas_set_dma_mask(pdev))
5732 goto fail_set_dma_mask;
5733
5734 host = scsi_host_alloc(&megasas_template,
5735 sizeof(struct megasas_instance));
5736
5737 if (!host) {
5738 dev_printk(KERN_DEBUG, &pdev->dev, "scsi_host_alloc failed\n");
5739 goto fail_alloc_instance;
5740 }
5741
5742 instance = (struct megasas_instance *)host->hostdata;
5743 memset(instance, 0, sizeof(*instance));
5744 atomic_set(&instance->fw_reset_no_pci_access, 0);
5745 instance->pdev = pdev;
5746
5747 switch (instance->pdev->device) {
5748 case PCI_DEVICE_ID_LSI_FUSION:
5749 case PCI_DEVICE_ID_LSI_PLASMA:
5750 case PCI_DEVICE_ID_LSI_INVADER:
5751 case PCI_DEVICE_ID_LSI_FURY:
5752 case PCI_DEVICE_ID_LSI_INTRUDER:
5753 case PCI_DEVICE_ID_LSI_INTRUDER_24:
5754 case PCI_DEVICE_ID_LSI_CUTLASS_52:
5755 case PCI_DEVICE_ID_LSI_CUTLASS_53:
5756 {
5757 instance->ctrl_context_pages =
5758 get_order(sizeof(struct fusion_context));
5759 instance->ctrl_context = (void *)__get_free_pages(GFP_KERNEL,
5760 instance->ctrl_context_pages);
5761 if (!instance->ctrl_context) {
5762 dev_printk(KERN_DEBUG, &pdev->dev, "Failed to allocate "
5763 "memory for Fusion context info\n");
5764 goto fail_alloc_dma_buf;
5765 }
5766 fusion = instance->ctrl_context;
5767 memset(fusion, 0,
5768 ((1 << PAGE_SHIFT) << instance->ctrl_context_pages));
5769 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
5770 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA))
5771 fusion->adapter_type = THUNDERBOLT_SERIES;
5772 else
5773 fusion->adapter_type = INVADER_SERIES;
5774 }
5775 break;
5776 default: /* For all other supported controllers */
5777
5778 instance->producer =
5779 pci_alloc_consistent(pdev, sizeof(u32),
5780 &instance->producer_h);
5781 instance->consumer =
5782 pci_alloc_consistent(pdev, sizeof(u32),
5783 &instance->consumer_h);
5784
5785 if (!instance->producer || !instance->consumer) {
5786 dev_printk(KERN_DEBUG, &pdev->dev, "Failed to allocate "
5787 "memory for producer, consumer\n");
5788 goto fail_alloc_dma_buf;
5789 }
5790
5791 *instance->producer = 0;
5792 *instance->consumer = 0;
5793 break;
5794 }
5795
5796 /* Crash dump feature related initialisation*/
5797 instance->drv_buf_index = 0;
5798 instance->drv_buf_alloc = 0;
5799 instance->crash_dump_fw_support = 0;
5800 instance->crash_dump_app_support = 0;
5801 instance->fw_crash_state = UNAVAILABLE;
5802 spin_lock_init(&instance->crashdump_lock);
5803 instance->crash_dump_buf = NULL;
5804
5805 megasas_poll_wait_aen = 0;
5806 instance->flag_ieee = 0;
5807 instance->ev = NULL;
5808 instance->issuepend_done = 1;
5809 atomic_set(&instance->adprecovery, MEGASAS_HBA_OPERATIONAL);
5810 instance->is_imr = 0;
5811
5812 instance->evt_detail = pci_alloc_consistent(pdev,
5813 sizeof(struct
5814 megasas_evt_detail),
5815 &instance->evt_detail_h);
5816
5817 if (!instance->evt_detail) {
5818 dev_printk(KERN_DEBUG, &pdev->dev, "Failed to allocate memory for "
5819 "event detail structure\n");
5820 goto fail_alloc_dma_buf;
5821 }
5822
5823 if (!reset_devices) {
5824 instance->system_info_buf = pci_zalloc_consistent(pdev,
5825 sizeof(struct MR_DRV_SYSTEM_INFO),
5826 &instance->system_info_h);
5827 if (!instance->system_info_buf)
5828 dev_info(&instance->pdev->dev, "Can't allocate system info buffer\n");
5829
5830 instance->pd_info = pci_alloc_consistent(pdev,
5831 sizeof(struct MR_PD_INFO), &instance->pd_info_h);
5832
5833 if (!instance->pd_info)
5834 dev_err(&instance->pdev->dev, "Failed to alloc mem for pd_info\n");
5835
5836 instance->crash_dump_buf = pci_alloc_consistent(pdev,
5837 CRASH_DMA_BUF_SIZE,
5838 &instance->crash_dump_h);
5839 if (!instance->crash_dump_buf)
5840 dev_err(&pdev->dev, "Can't allocate Firmware "
5841 "crash dump DMA buffer\n");
5842 }
5843
5844 /*
5845 * Initialize locks and queues
5846 */
5847 INIT_LIST_HEAD(&instance->cmd_pool);
5848 INIT_LIST_HEAD(&instance->internal_reset_pending_q);
5849
5850 atomic_set(&instance->fw_outstanding,0);
5851
5852 init_waitqueue_head(&instance->int_cmd_wait_q);
5853 init_waitqueue_head(&instance->abort_cmd_wait_q);
5854
5855 spin_lock_init(&instance->mfi_pool_lock);
5856 spin_lock_init(&instance->hba_lock);
5857 spin_lock_init(&instance->completion_lock);
5858
5859 mutex_init(&instance->reset_mutex);
5860 mutex_init(&instance->hba_mutex);
5861
5862 /*
5863 * Initialize PCI related and misc parameters
5864 */
5865 instance->host = host;
5866 instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
5867 instance->init_id = MEGASAS_DEFAULT_INIT_ID;
5868 instance->ctrl_info = NULL;
5869
5870
5871 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
5872 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY))
5873 instance->flag_ieee = 1;
5874
5875 megasas_dbg_lvl = 0;
5876 instance->flag = 0;
5877 instance->unload = 1;
5878 instance->last_time = 0;
5879 instance->disableOnlineCtrlReset = 1;
5880 instance->UnevenSpanSupport = 0;
5881
5882 if (instance->ctrl_context) {
5883 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
5884 INIT_WORK(&instance->crash_init, megasas_fusion_crash_dump_wq);
5885 } else
5886 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
5887
5888 /*
5889 * Initialize MFI Firmware
5890 */
5891 if (megasas_init_fw(instance))
5892 goto fail_init_mfi;
5893
5894 if (instance->requestorId) {
5895 if (instance->PlasmaFW111) {
5896 instance->vf_affiliation_111 =
5897 pci_alloc_consistent(pdev, sizeof(struct MR_LD_VF_AFFILIATION_111),
5898 &instance->vf_affiliation_111_h);
5899 if (!instance->vf_affiliation_111)
5900 dev_warn(&pdev->dev, "Can't allocate "
5901 "memory for VF affiliation buffer\n");
5902 } else {
5903 instance->vf_affiliation =
5904 pci_alloc_consistent(pdev,
5905 (MAX_LOGICAL_DRIVES + 1) *
5906 sizeof(struct MR_LD_VF_AFFILIATION),
5907 &instance->vf_affiliation_h);
5908 if (!instance->vf_affiliation)
5909 dev_warn(&pdev->dev, "Can't allocate "
5910 "memory for VF affiliation buffer\n");
5911 }
5912 }
5913
5914 /*
5915 * Store instance in PCI softstate
5916 */
5917 pci_set_drvdata(pdev, instance);
5918
5919 /*
5920 * Add this controller to megasas_mgmt_info structure so that it
5921 * can be exported to management applications
5922 */
5923 megasas_mgmt_info.count++;
5924 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
5925 megasas_mgmt_info.max_index++;
5926
5927 /*
5928 * Register with SCSI mid-layer
5929 */
5930 if (megasas_io_attach(instance))
5931 goto fail_io_attach;
5932
5933 instance->unload = 0;
5934 /*
5935 * Trigger SCSI to scan our drives
5936 */
5937 scsi_scan_host(host);
5938
5939 /*
5940 * Initiate AEN (Asynchronous Event Notification)
5941 */
5942 if (megasas_start_aen(instance)) {
5943 dev_printk(KERN_DEBUG, &pdev->dev, "start aen failed\n");
5944 goto fail_start_aen;
5945 }
5946
5947 /* Get current SR-IOV LD/VF affiliation */
5948 if (instance->requestorId)
5949 megasas_get_ld_vf_affiliation(instance, 1);
5950
5951 return 0;
5952
5953 fail_start_aen:
5954 fail_io_attach:
5955 megasas_mgmt_info.count--;
5956 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
5957 megasas_mgmt_info.max_index--;
5958
5959 instance->instancet->disable_intr(instance);
5960 megasas_destroy_irqs(instance);
5961
5962 if (instance->ctrl_context)
5963 megasas_release_fusion(instance);
5964 else
5965 megasas_release_mfi(instance);
5966 if (instance->msix_vectors)
5967 pci_disable_msix(instance->pdev);
5968 fail_init_mfi:
5969 fail_alloc_dma_buf:
5970 if (instance->evt_detail)
5971 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
5972 instance->evt_detail,
5973 instance->evt_detail_h);
5974
5975 if (instance->pd_info)
5976 pci_free_consistent(pdev, sizeof(struct MR_PD_INFO),
5977 instance->pd_info,
5978 instance->pd_info_h);
5979 if (instance->producer)
5980 pci_free_consistent(pdev, sizeof(u32), instance->producer,
5981 instance->producer_h);
5982 if (instance->consumer)
5983 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
5984 instance->consumer_h);
5985 scsi_host_put(host);
5986
5987 fail_alloc_instance:
5988 fail_set_dma_mask:
5989 pci_disable_device(pdev);
5990
5991 return -ENODEV;
5992 }
5993
5994 /**
5995 * megasas_flush_cache - Requests FW to flush all its caches
5996 * @instance: Adapter soft state
5997 */
5998 static void megasas_flush_cache(struct megasas_instance *instance)
5999 {
6000 struct megasas_cmd *cmd;
6001 struct megasas_dcmd_frame *dcmd;
6002
6003 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
6004 return;
6005
6006 cmd = megasas_get_cmd(instance);
6007
6008 if (!cmd)
6009 return;
6010
6011 dcmd = &cmd->frame->dcmd;
6012
6013 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6014
6015 dcmd->cmd = MFI_CMD_DCMD;
6016 dcmd->cmd_status = 0x0;
6017 dcmd->sge_count = 0;
6018 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
6019 dcmd->timeout = 0;
6020 dcmd->pad_0 = 0;
6021 dcmd->data_xfer_len = 0;
6022 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH);
6023 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
6024
6025 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
6026 != DCMD_SUCCESS) {
6027 dev_err(&instance->pdev->dev,
6028 "return from %s %d\n", __func__, __LINE__);
6029 return;
6030 }
6031
6032 megasas_return_cmd(instance, cmd);
6033 }
6034
6035 /**
6036 * megasas_shutdown_controller - Instructs FW to shutdown the controller
6037 * @instance: Adapter soft state
6038 * @opcode: Shutdown/Hibernate
6039 */
6040 static void megasas_shutdown_controller(struct megasas_instance *instance,
6041 u32 opcode)
6042 {
6043 struct megasas_cmd *cmd;
6044 struct megasas_dcmd_frame *dcmd;
6045
6046 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR)
6047 return;
6048
6049 cmd = megasas_get_cmd(instance);
6050
6051 if (!cmd)
6052 return;
6053
6054 if (instance->aen_cmd)
6055 megasas_issue_blocked_abort_cmd(instance,
6056 instance->aen_cmd, MFI_IO_TIMEOUT_SECS);
6057 if (instance->map_update_cmd)
6058 megasas_issue_blocked_abort_cmd(instance,
6059 instance->map_update_cmd, MFI_IO_TIMEOUT_SECS);
6060 if (instance->jbod_seq_cmd)
6061 megasas_issue_blocked_abort_cmd(instance,
6062 instance->jbod_seq_cmd, MFI_IO_TIMEOUT_SECS);
6063
6064 dcmd = &cmd->frame->dcmd;
6065
6066 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
6067
6068 dcmd->cmd = MFI_CMD_DCMD;
6069 dcmd->cmd_status = 0x0;
6070 dcmd->sge_count = 0;
6071 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
6072 dcmd->timeout = 0;
6073 dcmd->pad_0 = 0;
6074 dcmd->data_xfer_len = 0;
6075 dcmd->opcode = cpu_to_le32(opcode);
6076
6077 if (megasas_issue_blocked_cmd(instance, cmd, MFI_IO_TIMEOUT_SECS)
6078 != DCMD_SUCCESS) {
6079 dev_err(&instance->pdev->dev,
6080 "return from %s %d\n", __func__, __LINE__);
6081 return;
6082 }
6083
6084 megasas_return_cmd(instance, cmd);
6085 }
6086
6087 #ifdef CONFIG_PM
6088 /**
6089 * megasas_suspend - driver suspend entry point
6090 * @pdev: PCI device structure
6091 * @state: PCI power state to suspend routine
6092 */
6093 static int
6094 megasas_suspend(struct pci_dev *pdev, pm_message_t state)
6095 {
6096 struct Scsi_Host *host;
6097 struct megasas_instance *instance;
6098
6099 instance = pci_get_drvdata(pdev);
6100 host = instance->host;
6101 instance->unload = 1;
6102
6103 /* Shutdown SR-IOV heartbeat timer */
6104 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
6105 del_timer_sync(&instance->sriov_heartbeat_timer);
6106
6107 megasas_flush_cache(instance);
6108 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
6109
6110 /* cancel the delayed work if this work still in queue */
6111 if (instance->ev != NULL) {
6112 struct megasas_aen_event *ev = instance->ev;
6113 cancel_delayed_work_sync(&ev->hotplug_work);
6114 instance->ev = NULL;
6115 }
6116
6117 tasklet_kill(&instance->isr_tasklet);
6118
6119 pci_set_drvdata(instance->pdev, instance);
6120 instance->instancet->disable_intr(instance);
6121
6122 megasas_destroy_irqs(instance);
6123
6124 if (instance->msix_vectors)
6125 pci_disable_msix(instance->pdev);
6126
6127 pci_save_state(pdev);
6128 pci_disable_device(pdev);
6129
6130 pci_set_power_state(pdev, pci_choose_state(pdev, state));
6131
6132 return 0;
6133 }
6134
6135 /**
6136 * megasas_resume- driver resume entry point
6137 * @pdev: PCI device structure
6138 */
6139 static int
6140 megasas_resume(struct pci_dev *pdev)
6141 {
6142 int rval;
6143 struct Scsi_Host *host;
6144 struct megasas_instance *instance;
6145
6146 instance = pci_get_drvdata(pdev);
6147 host = instance->host;
6148 pci_set_power_state(pdev, PCI_D0);
6149 pci_enable_wake(pdev, PCI_D0, 0);
6150 pci_restore_state(pdev);
6151
6152 /*
6153 * PCI prepping: enable device set bus mastering and dma mask
6154 */
6155 rval = pci_enable_device_mem(pdev);
6156
6157 if (rval) {
6158 dev_err(&pdev->dev, "Enable device failed\n");
6159 return rval;
6160 }
6161
6162 pci_set_master(pdev);
6163
6164 if (megasas_set_dma_mask(pdev))
6165 goto fail_set_dma_mask;
6166
6167 /*
6168 * Initialize MFI Firmware
6169 */
6170
6171 atomic_set(&instance->fw_outstanding, 0);
6172
6173 /*
6174 * We expect the FW state to be READY
6175 */
6176 if (megasas_transition_to_ready(instance, 0))
6177 goto fail_ready_state;
6178
6179 /* Now re-enable MSI-X */
6180 if (instance->msix_vectors &&
6181 pci_enable_msix_exact(instance->pdev, instance->msixentry,
6182 instance->msix_vectors))
6183 goto fail_reenable_msix;
6184
6185 if (instance->ctrl_context) {
6186 megasas_reset_reply_desc(instance);
6187 if (megasas_ioc_init_fusion(instance)) {
6188 megasas_free_cmds(instance);
6189 megasas_free_cmds_fusion(instance);
6190 goto fail_init_mfi;
6191 }
6192 if (!megasas_get_map_info(instance))
6193 megasas_sync_map_info(instance);
6194 } else {
6195 *instance->producer = 0;
6196 *instance->consumer = 0;
6197 if (megasas_issue_init_mfi(instance))
6198 goto fail_init_mfi;
6199 }
6200
6201 if (megasas_get_ctrl_info(instance) != DCMD_SUCCESS)
6202 goto fail_init_mfi;
6203
6204 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
6205 (unsigned long)instance);
6206
6207 if (instance->msix_vectors ?
6208 megasas_setup_irqs_msix(instance, 0) :
6209 megasas_setup_irqs_ioapic(instance))
6210 goto fail_init_mfi;
6211
6212 /* Re-launch SR-IOV heartbeat timer */
6213 if (instance->requestorId) {
6214 if (!megasas_sriov_start_heartbeat(instance, 0))
6215 megasas_start_timer(instance,
6216 &instance->sriov_heartbeat_timer,
6217 megasas_sriov_heartbeat_handler,
6218 MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
6219 else {
6220 instance->skip_heartbeat_timer_del = 1;
6221 goto fail_init_mfi;
6222 }
6223 }
6224
6225 instance->instancet->enable_intr(instance);
6226 megasas_setup_jbod_map(instance);
6227 instance->unload = 0;
6228
6229 /*
6230 * Initiate AEN (Asynchronous Event Notification)
6231 */
6232 if (megasas_start_aen(instance))
6233 dev_err(&instance->pdev->dev, "Start AEN failed\n");
6234
6235 return 0;
6236
6237 fail_init_mfi:
6238 if (instance->evt_detail)
6239 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
6240 instance->evt_detail,
6241 instance->evt_detail_h);
6242
6243 if (instance->pd_info)
6244 pci_free_consistent(pdev, sizeof(struct MR_PD_INFO),
6245 instance->pd_info,
6246 instance->pd_info_h);
6247 if (instance->producer)
6248 pci_free_consistent(pdev, sizeof(u32), instance->producer,
6249 instance->producer_h);
6250 if (instance->consumer)
6251 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
6252 instance->consumer_h);
6253 scsi_host_put(host);
6254
6255 fail_set_dma_mask:
6256 fail_ready_state:
6257 fail_reenable_msix:
6258
6259 pci_disable_device(pdev);
6260
6261 return -ENODEV;
6262 }
6263 #else
6264 #define megasas_suspend NULL
6265 #define megasas_resume NULL
6266 #endif
6267
6268 /**
6269 * megasas_detach_one - PCI hot"un"plug entry point
6270 * @pdev: PCI device structure
6271 */
6272 static void megasas_detach_one(struct pci_dev *pdev)
6273 {
6274 int i;
6275 struct Scsi_Host *host;
6276 struct megasas_instance *instance;
6277 struct fusion_context *fusion;
6278 u32 pd_seq_map_sz;
6279
6280 instance = pci_get_drvdata(pdev);
6281 instance->unload = 1;
6282 host = instance->host;
6283 fusion = instance->ctrl_context;
6284
6285 /* Shutdown SR-IOV heartbeat timer */
6286 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
6287 del_timer_sync(&instance->sriov_heartbeat_timer);
6288
6289 if (instance->fw_crash_state != UNAVAILABLE)
6290 megasas_free_host_crash_buffer(instance);
6291 scsi_remove_host(instance->host);
6292 megasas_flush_cache(instance);
6293 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
6294
6295 /* cancel the delayed work if this work still in queue*/
6296 if (instance->ev != NULL) {
6297 struct megasas_aen_event *ev = instance->ev;
6298 cancel_delayed_work_sync(&ev->hotplug_work);
6299 instance->ev = NULL;
6300 }
6301
6302 /* cancel all wait events */
6303 wake_up_all(&instance->int_cmd_wait_q);
6304
6305 tasklet_kill(&instance->isr_tasklet);
6306
6307 /*
6308 * Take the instance off the instance array. Note that we will not
6309 * decrement the max_index. We let this array be sparse array
6310 */
6311 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
6312 if (megasas_mgmt_info.instance[i] == instance) {
6313 megasas_mgmt_info.count--;
6314 megasas_mgmt_info.instance[i] = NULL;
6315
6316 break;
6317 }
6318 }
6319
6320 instance->instancet->disable_intr(instance);
6321
6322 megasas_destroy_irqs(instance);
6323
6324 if (instance->msix_vectors)
6325 pci_disable_msix(instance->pdev);
6326
6327 if (instance->ctrl_context) {
6328 megasas_release_fusion(instance);
6329 pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
6330 (sizeof(struct MR_PD_CFG_SEQ) *
6331 (MAX_PHYSICAL_DEVICES - 1));
6332 for (i = 0; i < 2 ; i++) {
6333 if (fusion->ld_map[i])
6334 dma_free_coherent(&instance->pdev->dev,
6335 fusion->max_map_sz,
6336 fusion->ld_map[i],
6337 fusion->ld_map_phys[i]);
6338 if (fusion->ld_drv_map[i])
6339 free_pages((ulong)fusion->ld_drv_map[i],
6340 fusion->drv_map_pages);
6341 if (fusion->pd_seq_sync[i])
6342 dma_free_coherent(&instance->pdev->dev,
6343 pd_seq_map_sz,
6344 fusion->pd_seq_sync[i],
6345 fusion->pd_seq_phys[i]);
6346 }
6347 free_pages((ulong)instance->ctrl_context,
6348 instance->ctrl_context_pages);
6349 } else {
6350 megasas_release_mfi(instance);
6351 pci_free_consistent(pdev, sizeof(u32),
6352 instance->producer,
6353 instance->producer_h);
6354 pci_free_consistent(pdev, sizeof(u32),
6355 instance->consumer,
6356 instance->consumer_h);
6357 }
6358
6359 kfree(instance->ctrl_info);
6360
6361 if (instance->evt_detail)
6362 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
6363 instance->evt_detail, instance->evt_detail_h);
6364
6365 if (instance->pd_info)
6366 pci_free_consistent(pdev, sizeof(struct MR_PD_INFO),
6367 instance->pd_info,
6368 instance->pd_info_h);
6369 if (instance->vf_affiliation)
6370 pci_free_consistent(pdev, (MAX_LOGICAL_DRIVES + 1) *
6371 sizeof(struct MR_LD_VF_AFFILIATION),
6372 instance->vf_affiliation,
6373 instance->vf_affiliation_h);
6374
6375 if (instance->vf_affiliation_111)
6376 pci_free_consistent(pdev,
6377 sizeof(struct MR_LD_VF_AFFILIATION_111),
6378 instance->vf_affiliation_111,
6379 instance->vf_affiliation_111_h);
6380
6381 if (instance->hb_host_mem)
6382 pci_free_consistent(pdev, sizeof(struct MR_CTRL_HB_HOST_MEM),
6383 instance->hb_host_mem,
6384 instance->hb_host_mem_h);
6385
6386 if (instance->crash_dump_buf)
6387 pci_free_consistent(pdev, CRASH_DMA_BUF_SIZE,
6388 instance->crash_dump_buf, instance->crash_dump_h);
6389
6390 if (instance->system_info_buf)
6391 pci_free_consistent(pdev, sizeof(struct MR_DRV_SYSTEM_INFO),
6392 instance->system_info_buf, instance->system_info_h);
6393
6394 scsi_host_put(host);
6395
6396 pci_disable_device(pdev);
6397 }
6398
6399 /**
6400 * megasas_shutdown - Shutdown entry point
6401 * @device: Generic device structure
6402 */
6403 static void megasas_shutdown(struct pci_dev *pdev)
6404 {
6405 struct megasas_instance *instance = pci_get_drvdata(pdev);
6406
6407 instance->unload = 1;
6408 megasas_flush_cache(instance);
6409 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
6410 instance->instancet->disable_intr(instance);
6411 megasas_destroy_irqs(instance);
6412
6413 if (instance->msix_vectors)
6414 pci_disable_msix(instance->pdev);
6415 }
6416
6417 /**
6418 * megasas_mgmt_open - char node "open" entry point
6419 */
6420 static int megasas_mgmt_open(struct inode *inode, struct file *filep)
6421 {
6422 /*
6423 * Allow only those users with admin rights
6424 */
6425 if (!capable(CAP_SYS_ADMIN))
6426 return -EACCES;
6427
6428 return 0;
6429 }
6430
6431 /**
6432 * megasas_mgmt_fasync - Async notifier registration from applications
6433 *
6434 * This function adds the calling process to a driver global queue. When an
6435 * event occurs, SIGIO will be sent to all processes in this queue.
6436 */
6437 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
6438 {
6439 int rc;
6440
6441 mutex_lock(&megasas_async_queue_mutex);
6442
6443 rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
6444
6445 mutex_unlock(&megasas_async_queue_mutex);
6446
6447 if (rc >= 0) {
6448 /* For sanity check when we get ioctl */
6449 filep->private_data = filep;
6450 return 0;
6451 }
6452
6453 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
6454
6455 return rc;
6456 }
6457
6458 /**
6459 * megasas_mgmt_poll - char node "poll" entry point
6460 * */
6461 static unsigned int megasas_mgmt_poll(struct file *file, poll_table *wait)
6462 {
6463 unsigned int mask;
6464 unsigned long flags;
6465
6466 poll_wait(file, &megasas_poll_wait, wait);
6467 spin_lock_irqsave(&poll_aen_lock, flags);
6468 if (megasas_poll_wait_aen)
6469 mask = (POLLIN | POLLRDNORM);
6470 else
6471 mask = 0;
6472 megasas_poll_wait_aen = 0;
6473 spin_unlock_irqrestore(&poll_aen_lock, flags);
6474 return mask;
6475 }
6476
6477 /*
6478 * megasas_set_crash_dump_params_ioctl:
6479 * Send CRASH_DUMP_MODE DCMD to all controllers
6480 * @cmd: MFI command frame
6481 */
6482
6483 static int megasas_set_crash_dump_params_ioctl(struct megasas_cmd *cmd)
6484 {
6485 struct megasas_instance *local_instance;
6486 int i, error = 0;
6487 int crash_support;
6488
6489 crash_support = cmd->frame->dcmd.mbox.w[0];
6490
6491 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
6492 local_instance = megasas_mgmt_info.instance[i];
6493 if (local_instance && local_instance->crash_dump_drv_support) {
6494 if ((atomic_read(&local_instance->adprecovery) ==
6495 MEGASAS_HBA_OPERATIONAL) &&
6496 !megasas_set_crash_dump_params(local_instance,
6497 crash_support)) {
6498 local_instance->crash_dump_app_support =
6499 crash_support;
6500 dev_info(&local_instance->pdev->dev,
6501 "Application firmware crash "
6502 "dump mode set success\n");
6503 error = 0;
6504 } else {
6505 dev_info(&local_instance->pdev->dev,
6506 "Application firmware crash "
6507 "dump mode set failed\n");
6508 error = -1;
6509 }
6510 }
6511 }
6512 return error;
6513 }
6514
6515 /**
6516 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW
6517 * @instance: Adapter soft state
6518 * @argp: User's ioctl packet
6519 */
6520 static int
6521 megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
6522 struct megasas_iocpacket __user * user_ioc,
6523 struct megasas_iocpacket *ioc)
6524 {
6525 struct megasas_sge32 *kern_sge32;
6526 struct megasas_cmd *cmd;
6527 void *kbuff_arr[MAX_IOCTL_SGE];
6528 dma_addr_t buf_handle = 0;
6529 int error = 0, i;
6530 void *sense = NULL;
6531 dma_addr_t sense_handle;
6532 unsigned long *sense_ptr;
6533
6534 memset(kbuff_arr, 0, sizeof(kbuff_arr));
6535
6536 if (ioc->sge_count > MAX_IOCTL_SGE) {
6537 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SGE count [%d] > max limit [%d]\n",
6538 ioc->sge_count, MAX_IOCTL_SGE);
6539 return -EINVAL;
6540 }
6541
6542 cmd = megasas_get_cmd(instance);
6543 if (!cmd) {
6544 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a cmd packet\n");
6545 return -ENOMEM;
6546 }
6547
6548 /*
6549 * User's IOCTL packet has 2 frames (maximum). Copy those two
6550 * frames into our cmd's frames. cmd->frame's context will get
6551 * overwritten when we copy from user's frames. So set that value
6552 * alone separately
6553 */
6554 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
6555 cmd->frame->hdr.context = cpu_to_le32(cmd->index);
6556 cmd->frame->hdr.pad_0 = 0;
6557 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_IEEE |
6558 MFI_FRAME_SGL64 |
6559 MFI_FRAME_SENSE64));
6560
6561 if (cmd->frame->dcmd.opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) {
6562 error = megasas_set_crash_dump_params_ioctl(cmd);
6563 megasas_return_cmd(instance, cmd);
6564 return error;
6565 }
6566
6567 /*
6568 * The management interface between applications and the fw uses
6569 * MFI frames. E.g, RAID configuration changes, LD property changes
6570 * etc are accomplishes through different kinds of MFI frames. The
6571 * driver needs to care only about substituting user buffers with
6572 * kernel buffers in SGLs. The location of SGL is embedded in the
6573 * struct iocpacket itself.
6574 */
6575 kern_sge32 = (struct megasas_sge32 *)
6576 ((unsigned long)cmd->frame + ioc->sgl_off);
6577
6578 /*
6579 * For each user buffer, create a mirror buffer and copy in
6580 */
6581 for (i = 0; i < ioc->sge_count; i++) {
6582 if (!ioc->sgl[i].iov_len)
6583 continue;
6584
6585 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
6586 ioc->sgl[i].iov_len,
6587 &buf_handle, GFP_KERNEL);
6588 if (!kbuff_arr[i]) {
6589 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc "
6590 "kernel SGL buffer for IOCTL\n");
6591 error = -ENOMEM;
6592 goto out;
6593 }
6594
6595 /*
6596 * We don't change the dma_coherent_mask, so
6597 * pci_alloc_consistent only returns 32bit addresses
6598 */
6599 kern_sge32[i].phys_addr = cpu_to_le32(buf_handle);
6600 kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
6601
6602 /*
6603 * We created a kernel buffer corresponding to the
6604 * user buffer. Now copy in from the user buffer
6605 */
6606 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
6607 (u32) (ioc->sgl[i].iov_len))) {
6608 error = -EFAULT;
6609 goto out;
6610 }
6611 }
6612
6613 if (ioc->sense_len) {
6614 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
6615 &sense_handle, GFP_KERNEL);
6616 if (!sense) {
6617 error = -ENOMEM;
6618 goto out;
6619 }
6620
6621 sense_ptr =
6622 (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off);
6623 *sense_ptr = cpu_to_le32(sense_handle);
6624 }
6625
6626 /*
6627 * Set the sync_cmd flag so that the ISR knows not to complete this
6628 * cmd to the SCSI mid-layer
6629 */
6630 cmd->sync_cmd = 1;
6631 if (megasas_issue_blocked_cmd(instance, cmd, 0) == DCMD_NOT_FIRED) {
6632 cmd->sync_cmd = 0;
6633 dev_err(&instance->pdev->dev,
6634 "return -EBUSY from %s %d opcode 0x%x cmd->cmd_status_drv 0x%x\n",
6635 __func__, __LINE__, cmd->frame->dcmd.opcode,
6636 cmd->cmd_status_drv);
6637 return -EBUSY;
6638 }
6639
6640 cmd->sync_cmd = 0;
6641
6642 if (instance->unload == 1) {
6643 dev_info(&instance->pdev->dev, "Driver unload is in progress "
6644 "don't submit data to application\n");
6645 goto out;
6646 }
6647 /*
6648 * copy out the kernel buffers to user buffers
6649 */
6650 for (i = 0; i < ioc->sge_count; i++) {
6651 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
6652 ioc->sgl[i].iov_len)) {
6653 error = -EFAULT;
6654 goto out;
6655 }
6656 }
6657
6658 /*
6659 * copy out the sense
6660 */
6661 if (ioc->sense_len) {
6662 /*
6663 * sense_ptr points to the location that has the user
6664 * sense buffer address
6665 */
6666 sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw +
6667 ioc->sense_off);
6668
6669 if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)),
6670 sense, ioc->sense_len)) {
6671 dev_err(&instance->pdev->dev, "Failed to copy out to user "
6672 "sense data\n");
6673 error = -EFAULT;
6674 goto out;
6675 }
6676 }
6677
6678 /*
6679 * copy the status codes returned by the fw
6680 */
6681 if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
6682 &cmd->frame->hdr.cmd_status, sizeof(u8))) {
6683 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error copying out cmd_status\n");
6684 error = -EFAULT;
6685 }
6686
6687 out:
6688 if (sense) {
6689 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
6690 sense, sense_handle);
6691 }
6692
6693 for (i = 0; i < ioc->sge_count; i++) {
6694 if (kbuff_arr[i]) {
6695 dma_free_coherent(&instance->pdev->dev,
6696 le32_to_cpu(kern_sge32[i].length),
6697 kbuff_arr[i],
6698 le32_to_cpu(kern_sge32[i].phys_addr));
6699 kbuff_arr[i] = NULL;
6700 }
6701 }
6702
6703 megasas_return_cmd(instance, cmd);
6704 return error;
6705 }
6706
6707 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
6708 {
6709 struct megasas_iocpacket __user *user_ioc =
6710 (struct megasas_iocpacket __user *)arg;
6711 struct megasas_iocpacket *ioc;
6712 struct megasas_instance *instance;
6713 int error;
6714 int i;
6715 unsigned long flags;
6716 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
6717
6718 ioc = memdup_user(user_ioc, sizeof(*ioc));
6719 if (IS_ERR(ioc))
6720 return PTR_ERR(ioc);
6721
6722 instance = megasas_lookup_instance(ioc->host_no);
6723 if (!instance) {
6724 error = -ENODEV;
6725 goto out_kfree_ioc;
6726 }
6727
6728 /* Adjust ioctl wait time for VF mode */
6729 if (instance->requestorId)
6730 wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF;
6731
6732 /* Block ioctls in VF mode */
6733 if (instance->requestorId && !allow_vf_ioctls) {
6734 error = -ENODEV;
6735 goto out_kfree_ioc;
6736 }
6737
6738 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
6739 dev_err(&instance->pdev->dev, "Controller in crit error\n");
6740 error = -ENODEV;
6741 goto out_kfree_ioc;
6742 }
6743
6744 if (instance->unload == 1) {
6745 error = -ENODEV;
6746 goto out_kfree_ioc;
6747 }
6748
6749 if (down_interruptible(&instance->ioctl_sem)) {
6750 error = -ERESTARTSYS;
6751 goto out_kfree_ioc;
6752 }
6753
6754 for (i = 0; i < wait_time; i++) {
6755
6756 spin_lock_irqsave(&instance->hba_lock, flags);
6757 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) {
6758 spin_unlock_irqrestore(&instance->hba_lock, flags);
6759 break;
6760 }
6761 spin_unlock_irqrestore(&instance->hba_lock, flags);
6762
6763 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
6764 dev_notice(&instance->pdev->dev, "waiting"
6765 "for controller reset to finish\n");
6766 }
6767
6768 msleep(1000);
6769 }
6770
6771 spin_lock_irqsave(&instance->hba_lock, flags);
6772 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
6773 spin_unlock_irqrestore(&instance->hba_lock, flags);
6774
6775 dev_err(&instance->pdev->dev, "timed out while"
6776 "waiting for HBA to recover\n");
6777 error = -ENODEV;
6778 goto out_up;
6779 }
6780 spin_unlock_irqrestore(&instance->hba_lock, flags);
6781
6782 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
6783 out_up:
6784 up(&instance->ioctl_sem);
6785
6786 out_kfree_ioc:
6787 kfree(ioc);
6788 return error;
6789 }
6790
6791 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
6792 {
6793 struct megasas_instance *instance;
6794 struct megasas_aen aen;
6795 int error;
6796 int i;
6797 unsigned long flags;
6798 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
6799
6800 if (file->private_data != file) {
6801 printk(KERN_DEBUG "megasas: fasync_helper was not "
6802 "called first\n");
6803 return -EINVAL;
6804 }
6805
6806 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
6807 return -EFAULT;
6808
6809 instance = megasas_lookup_instance(aen.host_no);
6810
6811 if (!instance)
6812 return -ENODEV;
6813
6814 if (atomic_read(&instance->adprecovery) == MEGASAS_HW_CRITICAL_ERROR) {
6815 return -ENODEV;
6816 }
6817
6818 if (instance->unload == 1) {
6819 return -ENODEV;
6820 }
6821
6822 for (i = 0; i < wait_time; i++) {
6823
6824 spin_lock_irqsave(&instance->hba_lock, flags);
6825 if (atomic_read(&instance->adprecovery) == MEGASAS_HBA_OPERATIONAL) {
6826 spin_unlock_irqrestore(&instance->hba_lock,
6827 flags);
6828 break;
6829 }
6830
6831 spin_unlock_irqrestore(&instance->hba_lock, flags);
6832
6833 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
6834 dev_notice(&instance->pdev->dev, "waiting for"
6835 "controller reset to finish\n");
6836 }
6837
6838 msleep(1000);
6839 }
6840
6841 spin_lock_irqsave(&instance->hba_lock, flags);
6842 if (atomic_read(&instance->adprecovery) != MEGASAS_HBA_OPERATIONAL) {
6843 spin_unlock_irqrestore(&instance->hba_lock, flags);
6844 dev_err(&instance->pdev->dev, "timed out while waiting"
6845 "for HBA to recover\n");
6846 return -ENODEV;
6847 }
6848 spin_unlock_irqrestore(&instance->hba_lock, flags);
6849
6850 mutex_lock(&instance->reset_mutex);
6851 error = megasas_register_aen(instance, aen.seq_num,
6852 aen.class_locale_word);
6853 mutex_unlock(&instance->reset_mutex);
6854 return error;
6855 }
6856
6857 /**
6858 * megasas_mgmt_ioctl - char node ioctl entry point
6859 */
6860 static long
6861 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
6862 {
6863 switch (cmd) {
6864 case MEGASAS_IOC_FIRMWARE:
6865 return megasas_mgmt_ioctl_fw(file, arg);
6866
6867 case MEGASAS_IOC_GET_AEN:
6868 return megasas_mgmt_ioctl_aen(file, arg);
6869 }
6870
6871 return -ENOTTY;
6872 }
6873
6874 #ifdef CONFIG_COMPAT
6875 static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg)
6876 {
6877 struct compat_megasas_iocpacket __user *cioc =
6878 (struct compat_megasas_iocpacket __user *)arg;
6879 struct megasas_iocpacket __user *ioc =
6880 compat_alloc_user_space(sizeof(struct megasas_iocpacket));
6881 int i;
6882 int error = 0;
6883 compat_uptr_t ptr;
6884 u32 local_sense_off;
6885 u32 local_sense_len;
6886 u32 user_sense_off;
6887
6888 if (clear_user(ioc, sizeof(*ioc)))
6889 return -EFAULT;
6890
6891 if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) ||
6892 copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) ||
6893 copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) ||
6894 copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) ||
6895 copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) ||
6896 copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32)))
6897 return -EFAULT;
6898
6899 /*
6900 * The sense_ptr is used in megasas_mgmt_fw_ioctl only when
6901 * sense_len is not null, so prepare the 64bit value under
6902 * the same condition.
6903 */
6904 if (get_user(local_sense_off, &ioc->sense_off) ||
6905 get_user(local_sense_len, &ioc->sense_len) ||
6906 get_user(user_sense_off, &cioc->sense_off))
6907 return -EFAULT;
6908
6909 if (local_sense_off != user_sense_off)
6910 return -EINVAL;
6911
6912 if (local_sense_len) {
6913 void __user **sense_ioc_ptr =
6914 (void __user **)((u8 *)((unsigned long)&ioc->frame.raw) + local_sense_off);
6915 compat_uptr_t *sense_cioc_ptr =
6916 (compat_uptr_t *)(((unsigned long)&cioc->frame.raw) + user_sense_off);
6917 if (get_user(ptr, sense_cioc_ptr) ||
6918 put_user(compat_ptr(ptr), sense_ioc_ptr))
6919 return -EFAULT;
6920 }
6921
6922 for (i = 0; i < MAX_IOCTL_SGE; i++) {
6923 if (get_user(ptr, &cioc->sgl[i].iov_base) ||
6924 put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) ||
6925 copy_in_user(&ioc->sgl[i].iov_len,
6926 &cioc->sgl[i].iov_len, sizeof(compat_size_t)))
6927 return -EFAULT;
6928 }
6929
6930 error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc);
6931
6932 if (copy_in_user(&cioc->frame.hdr.cmd_status,
6933 &ioc->frame.hdr.cmd_status, sizeof(u8))) {
6934 printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n");
6935 return -EFAULT;
6936 }
6937 return error;
6938 }
6939
6940 static long
6941 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
6942 unsigned long arg)
6943 {
6944 switch (cmd) {
6945 case MEGASAS_IOC_FIRMWARE32:
6946 return megasas_mgmt_compat_ioctl_fw(file, arg);
6947 case MEGASAS_IOC_GET_AEN:
6948 return megasas_mgmt_ioctl_aen(file, arg);
6949 }
6950
6951 return -ENOTTY;
6952 }
6953 #endif
6954
6955 /*
6956 * File operations structure for management interface
6957 */
6958 static const struct file_operations megasas_mgmt_fops = {
6959 .owner = THIS_MODULE,
6960 .open = megasas_mgmt_open,
6961 .fasync = megasas_mgmt_fasync,
6962 .unlocked_ioctl = megasas_mgmt_ioctl,
6963 .poll = megasas_mgmt_poll,
6964 #ifdef CONFIG_COMPAT
6965 .compat_ioctl = megasas_mgmt_compat_ioctl,
6966 #endif
6967 .llseek = noop_llseek,
6968 };
6969
6970 /*
6971 * PCI hotplug support registration structure
6972 */
6973 static struct pci_driver megasas_pci_driver = {
6974
6975 .name = "megaraid_sas",
6976 .id_table = megasas_pci_table,
6977 .probe = megasas_probe_one,
6978 .remove = megasas_detach_one,
6979 .suspend = megasas_suspend,
6980 .resume = megasas_resume,
6981 .shutdown = megasas_shutdown,
6982 };
6983
6984 /*
6985 * Sysfs driver attributes
6986 */
6987 static ssize_t megasas_sysfs_show_version(struct device_driver *dd, char *buf)
6988 {
6989 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
6990 MEGASAS_VERSION);
6991 }
6992
6993 static DRIVER_ATTR(version, S_IRUGO, megasas_sysfs_show_version, NULL);
6994
6995 static ssize_t
6996 megasas_sysfs_show_release_date(struct device_driver *dd, char *buf)
6997 {
6998 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
6999 MEGASAS_RELDATE);
7000 }
7001
7002 static DRIVER_ATTR(release_date, S_IRUGO, megasas_sysfs_show_release_date, NULL);
7003
7004 static ssize_t
7005 megasas_sysfs_show_support_poll_for_event(struct device_driver *dd, char *buf)
7006 {
7007 return sprintf(buf, "%u\n", support_poll_for_event);
7008 }
7009
7010 static DRIVER_ATTR(support_poll_for_event, S_IRUGO,
7011 megasas_sysfs_show_support_poll_for_event, NULL);
7012
7013 static ssize_t
7014 megasas_sysfs_show_support_device_change(struct device_driver *dd, char *buf)
7015 {
7016 return sprintf(buf, "%u\n", support_device_change);
7017 }
7018
7019 static DRIVER_ATTR(support_device_change, S_IRUGO,
7020 megasas_sysfs_show_support_device_change, NULL);
7021
7022 static ssize_t
7023 megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf)
7024 {
7025 return sprintf(buf, "%u\n", megasas_dbg_lvl);
7026 }
7027
7028 static ssize_t
7029 megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count)
7030 {
7031 int retval = count;
7032
7033 if (sscanf(buf, "%u", &megasas_dbg_lvl) < 1) {
7034 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
7035 retval = -EINVAL;
7036 }
7037 return retval;
7038 }
7039
7040 static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUSR, megasas_sysfs_show_dbg_lvl,
7041 megasas_sysfs_set_dbg_lvl);
7042
7043 static void
7044 megasas_aen_polling(struct work_struct *work)
7045 {
7046 struct megasas_aen_event *ev =
7047 container_of(work, struct megasas_aen_event, hotplug_work.work);
7048 struct megasas_instance *instance = ev->instance;
7049 union megasas_evt_class_locale class_locale;
7050 struct Scsi_Host *host;
7051 struct scsi_device *sdev1;
7052 u16 pd_index = 0;
7053 u16 ld_index = 0;
7054 int i, j, doscan = 0;
7055 u32 seq_num, wait_time = MEGASAS_RESET_WAIT_TIME;
7056 int error;
7057 u8 dcmd_ret = DCMD_SUCCESS;
7058
7059 if (!instance) {
7060 printk(KERN_ERR "invalid instance!\n");
7061 kfree(ev);
7062 return;
7063 }
7064
7065 /* Adjust event workqueue thread wait time for VF mode */
7066 if (instance->requestorId)
7067 wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF;
7068
7069 /* Don't run the event workqueue thread if OCR is running */
7070 mutex_lock(&instance->reset_mutex);
7071
7072 instance->ev = NULL;
7073 host = instance->host;
7074 if (instance->evt_detail) {
7075 megasas_decode_evt(instance);
7076
7077 switch (le32_to_cpu(instance->evt_detail->code)) {
7078
7079 case MR_EVT_PD_INSERTED:
7080 case MR_EVT_PD_REMOVED:
7081 dcmd_ret = megasas_get_pd_list(instance);
7082 if (dcmd_ret == DCMD_SUCCESS)
7083 doscan = SCAN_PD_CHANNEL;
7084 break;
7085
7086 case MR_EVT_LD_OFFLINE:
7087 case MR_EVT_CFG_CLEARED:
7088 case MR_EVT_LD_DELETED:
7089 case MR_EVT_LD_CREATED:
7090 if (!instance->requestorId ||
7091 (instance->requestorId && megasas_get_ld_vf_affiliation(instance, 0)))
7092 dcmd_ret = megasas_ld_list_query(instance, MR_LD_QUERY_TYPE_EXPOSED_TO_HOST);
7093
7094 if (dcmd_ret == DCMD_SUCCESS)
7095 doscan = SCAN_VD_CHANNEL;
7096
7097 break;
7098
7099 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
7100 case MR_EVT_FOREIGN_CFG_IMPORTED:
7101 case MR_EVT_LD_STATE_CHANGE:
7102 dcmd_ret = megasas_get_pd_list(instance);
7103
7104 if (dcmd_ret != DCMD_SUCCESS)
7105 break;
7106
7107 if (!instance->requestorId ||
7108 (instance->requestorId && megasas_get_ld_vf_affiliation(instance, 0)))
7109 dcmd_ret = megasas_ld_list_query(instance, MR_LD_QUERY_TYPE_EXPOSED_TO_HOST);
7110
7111 if (dcmd_ret != DCMD_SUCCESS)
7112 break;
7113
7114 doscan = SCAN_VD_CHANNEL | SCAN_PD_CHANNEL;
7115 dev_info(&instance->pdev->dev, "scanning for scsi%d...\n",
7116 instance->host->host_no);
7117 break;
7118
7119 case MR_EVT_CTRL_PROP_CHANGED:
7120 dcmd_ret = megasas_get_ctrl_info(instance);
7121 break;
7122 default:
7123 doscan = 0;
7124 break;
7125 }
7126 } else {
7127 dev_err(&instance->pdev->dev, "invalid evt_detail!\n");
7128 mutex_unlock(&instance->reset_mutex);
7129 kfree(ev);
7130 return;
7131 }
7132
7133 mutex_unlock(&instance->reset_mutex);
7134
7135 if (doscan & SCAN_PD_CHANNEL) {
7136 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
7137 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
7138 pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j;
7139 sdev1 = scsi_device_lookup(host, i, j, 0);
7140 if (instance->pd_list[pd_index].driveState ==
7141 MR_PD_STATE_SYSTEM) {
7142 if (!sdev1)
7143 scsi_add_device(host, i, j, 0);
7144 else
7145 scsi_device_put(sdev1);
7146 } else {
7147 if (sdev1) {
7148 scsi_remove_device(sdev1);
7149 scsi_device_put(sdev1);
7150 }
7151 }
7152 }
7153 }
7154 }
7155
7156 if (doscan & SCAN_VD_CHANNEL) {
7157 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
7158 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
7159 ld_index = (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
7160 sdev1 = scsi_device_lookup(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
7161 if (instance->ld_ids[ld_index] != 0xff) {
7162 if (!sdev1)
7163 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
7164 else
7165 scsi_device_put(sdev1);
7166 } else {
7167 if (sdev1) {
7168 scsi_remove_device(sdev1);
7169 scsi_device_put(sdev1);
7170 }
7171 }
7172 }
7173 }
7174 }
7175
7176 if (dcmd_ret == DCMD_SUCCESS)
7177 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1;
7178 else
7179 seq_num = instance->last_seq_num;
7180
7181 /* Register AEN with FW for latest sequence number plus 1 */
7182 class_locale.members.reserved = 0;
7183 class_locale.members.locale = MR_EVT_LOCALE_ALL;
7184 class_locale.members.class = MR_EVT_CLASS_DEBUG;
7185
7186 if (instance->aen_cmd != NULL) {
7187 kfree(ev);
7188 return;
7189 }
7190
7191 mutex_lock(&instance->reset_mutex);
7192 error = megasas_register_aen(instance, seq_num,
7193 class_locale.word);
7194 if (error)
7195 dev_err(&instance->pdev->dev,
7196 "register aen failed error %x\n", error);
7197
7198 mutex_unlock(&instance->reset_mutex);
7199 kfree(ev);
7200 }
7201
7202 /**
7203 * megasas_init - Driver load entry point
7204 */
7205 static int __init megasas_init(void)
7206 {
7207 int rval;
7208
7209 /*
7210 * Booted in kdump kernel, minimize memory footprints by
7211 * disabling few features
7212 */
7213 if (reset_devices) {
7214 msix_vectors = 1;
7215 rdpq_enable = 0;
7216 dual_qdepth_disable = 1;
7217 }
7218
7219 /*
7220 * Announce driver version and other information
7221 */
7222 pr_info("megasas: %s\n", MEGASAS_VERSION);
7223
7224 spin_lock_init(&poll_aen_lock);
7225
7226 support_poll_for_event = 2;
7227 support_device_change = 1;
7228
7229 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
7230
7231 /*
7232 * Register character device node
7233 */
7234 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
7235
7236 if (rval < 0) {
7237 printk(KERN_DEBUG "megasas: failed to open device node\n");
7238 return rval;
7239 }
7240
7241 megasas_mgmt_majorno = rval;
7242
7243 /*
7244 * Register ourselves as PCI hotplug module
7245 */
7246 rval = pci_register_driver(&megasas_pci_driver);
7247
7248 if (rval) {
7249 printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n");
7250 goto err_pcidrv;
7251 }
7252
7253 rval = driver_create_file(&megasas_pci_driver.driver,
7254 &driver_attr_version);
7255 if (rval)
7256 goto err_dcf_attr_ver;
7257
7258 rval = driver_create_file(&megasas_pci_driver.driver,
7259 &driver_attr_release_date);
7260 if (rval)
7261 goto err_dcf_rel_date;
7262
7263 rval = driver_create_file(&megasas_pci_driver.driver,
7264 &driver_attr_support_poll_for_event);
7265 if (rval)
7266 goto err_dcf_support_poll_for_event;
7267
7268 rval = driver_create_file(&megasas_pci_driver.driver,
7269 &driver_attr_dbg_lvl);
7270 if (rval)
7271 goto err_dcf_dbg_lvl;
7272 rval = driver_create_file(&megasas_pci_driver.driver,
7273 &driver_attr_support_device_change);
7274 if (rval)
7275 goto err_dcf_support_device_change;
7276
7277 return rval;
7278
7279 err_dcf_support_device_change:
7280 driver_remove_file(&megasas_pci_driver.driver,
7281 &driver_attr_dbg_lvl);
7282 err_dcf_dbg_lvl:
7283 driver_remove_file(&megasas_pci_driver.driver,
7284 &driver_attr_support_poll_for_event);
7285 err_dcf_support_poll_for_event:
7286 driver_remove_file(&megasas_pci_driver.driver,
7287 &driver_attr_release_date);
7288 err_dcf_rel_date:
7289 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
7290 err_dcf_attr_ver:
7291 pci_unregister_driver(&megasas_pci_driver);
7292 err_pcidrv:
7293 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
7294 return rval;
7295 }
7296
7297 /**
7298 * megasas_exit - Driver unload entry point
7299 */
7300 static void __exit megasas_exit(void)
7301 {
7302 driver_remove_file(&megasas_pci_driver.driver,
7303 &driver_attr_dbg_lvl);
7304 driver_remove_file(&megasas_pci_driver.driver,
7305 &driver_attr_support_poll_for_event);
7306 driver_remove_file(&megasas_pci_driver.driver,
7307 &driver_attr_support_device_change);
7308 driver_remove_file(&megasas_pci_driver.driver,
7309 &driver_attr_release_date);
7310 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
7311
7312 pci_unregister_driver(&megasas_pci_driver);
7313 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
7314 }
7315
7316 module_init(megasas_init);
7317 module_exit(megasas_exit);
Linux with added FPC-III support