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s390/ptrace: get rid of long longs in psw_bits
[linux/fpc-iii.git] / drivers / scsi / megaraid / megaraid_sas_base.c
blob97a1c1c33b05dd2ba7e2dfe4feb3469dce3b6199
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 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 MODULE_LICENSE("GPL");
96 MODULE_VERSION(MEGASAS_VERSION);
97 MODULE_AUTHOR("megaraidlinux.pdl@avagotech.com");
98 MODULE_DESCRIPTION("Avago MegaRAID SAS Driver");
99
100 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
101 static int megasas_get_pd_list(struct megasas_instance *instance);
102 static int megasas_ld_list_query(struct megasas_instance *instance,
103 u8 query_type);
104 static int megasas_issue_init_mfi(struct megasas_instance *instance);
105 static int megasas_register_aen(struct megasas_instance *instance,
106 u32 seq_num, u32 class_locale_word);
107 /*
108 * PCI ID table for all supported controllers
109 */
110 static struct pci_device_id megasas_pci_table[] = {
111
112 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
113 /* xscale IOP */
114 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
115 /* ppc IOP */
116 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
117 /* ppc IOP */
118 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
119 /* gen2*/
120 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
121 /* gen2*/
122 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
123 /* skinny*/
124 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
125 /* skinny*/
126 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
127 /* xscale IOP, vega */
128 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
129 /* xscale IOP */
130 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)},
131 /* Fusion */
132 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)},
133 /* Plasma */
134 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)},
135 /* Invader */
136 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)},
137 /* Fury */
138 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER)},
139 /* Intruder */
140 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INTRUDER_24)},
141 /* Intruder 24 port*/
142 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_52)},
143 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_CUTLASS_53)},
144 {}
145 };
146
147 MODULE_DEVICE_TABLE(pci, megasas_pci_table);
148
149 static int megasas_mgmt_majorno;
150 struct megasas_mgmt_info megasas_mgmt_info;
151 static struct fasync_struct *megasas_async_queue;
152 static DEFINE_MUTEX(megasas_async_queue_mutex);
153
154 static int megasas_poll_wait_aen;
155 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
156 static u32 support_poll_for_event;
157 u32 megasas_dbg_lvl;
158 static u32 support_device_change;
159
160 /* define lock for aen poll */
161 spinlock_t poll_aen_lock;
162
163 void
164 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
165 u8 alt_status);
166 static u32
167 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs);
168 static int
169 megasas_adp_reset_gen2(struct megasas_instance *instance,
170 struct megasas_register_set __iomem *reg_set);
171 static irqreturn_t megasas_isr(int irq, void *devp);
172 static u32
173 megasas_init_adapter_mfi(struct megasas_instance *instance);
174 u32
175 megasas_build_and_issue_cmd(struct megasas_instance *instance,
176 struct scsi_cmnd *scmd);
177 static void megasas_complete_cmd_dpc(unsigned long instance_addr);
178 void
179 megasas_release_fusion(struct megasas_instance *instance);
180 int
181 megasas_ioc_init_fusion(struct megasas_instance *instance);
182 void
183 megasas_free_cmds_fusion(struct megasas_instance *instance);
184 u8
185 megasas_get_map_info(struct megasas_instance *instance);
186 int
187 megasas_sync_map_info(struct megasas_instance *instance);
188 int
189 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
190 int seconds);
191 void megasas_reset_reply_desc(struct megasas_instance *instance);
192 int megasas_reset_fusion(struct Scsi_Host *shost, int iotimeout);
193 void megasas_fusion_ocr_wq(struct work_struct *work);
194 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
195 int initial);
196 int megasas_check_mpio_paths(struct megasas_instance *instance,
197 struct scsi_cmnd *scmd);
198
199 void
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 }
205
206 /**
207 * megasas_get_cmd - Get a command from the free pool
208 * @instance: Adapter soft state
209 *
210 * Returns a free command from the pool
211 */
212 struct megasas_cmd *megasas_get_cmd(struct megasas_instance
213 *instance)
214 {
215 unsigned long flags;
216 struct megasas_cmd *cmd = NULL;
217
218 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
219
220 if (!list_empty(&instance->cmd_pool)) {
221 cmd = list_entry((&instance->cmd_pool)->next,
222 struct megasas_cmd, list);
223 list_del_init(&cmd->list);
224 } else {
225 dev_err(&instance->pdev->dev, "Command pool empty!\n");
226 }
227
228 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
229 return cmd;
230 }
231
232 /**
233 * megasas_return_cmd - Return a cmd to free command pool
234 * @instance: Adapter soft state
235 * @cmd: Command packet to be returned to free command pool
236 */
237 inline void
238 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
239 {
240 unsigned long flags;
241 u32 blk_tags;
242 struct megasas_cmd_fusion *cmd_fusion;
243 struct fusion_context *fusion = instance->ctrl_context;
244
245 /* This flag is used only for fusion adapter.
246 * Wait for Interrupt for Polled mode DCMD
247 */
248 if (cmd->flags & DRV_DCMD_POLLED_MODE)
249 return;
250
251 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
252
253 if (fusion) {
254 blk_tags = instance->max_scsi_cmds + cmd->index;
255 cmd_fusion = fusion->cmd_list[blk_tags];
256 megasas_return_cmd_fusion(instance, cmd_fusion);
257 }
258 cmd->scmd = NULL;
259 cmd->frame_count = 0;
260 cmd->flags = 0;
261 if (!fusion && reset_devices)
262 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
263 list_add(&cmd->list, (&instance->cmd_pool)->next);
264
265 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
266
267 }
268
269 static const char *
270 format_timestamp(uint32_t timestamp)
271 {
272 static char buffer[32];
273
274 if ((timestamp & 0xff000000) == 0xff000000)
275 snprintf(buffer, sizeof(buffer), "boot + %us", timestamp &
276 0x00ffffff);
277 else
278 snprintf(buffer, sizeof(buffer), "%us", timestamp);
279 return buffer;
280 }
281
282 static const char *
283 format_class(int8_t class)
284 {
285 static char buffer[6];
286
287 switch (class) {
288 case MFI_EVT_CLASS_DEBUG:
289 return "debug";
290 case MFI_EVT_CLASS_PROGRESS:
291 return "progress";
292 case MFI_EVT_CLASS_INFO:
293 return "info";
294 case MFI_EVT_CLASS_WARNING:
295 return "WARN";
296 case MFI_EVT_CLASS_CRITICAL:
297 return "CRIT";
298 case MFI_EVT_CLASS_FATAL:
299 return "FATAL";
300 case MFI_EVT_CLASS_DEAD:
301 return "DEAD";
302 default:
303 snprintf(buffer, sizeof(buffer), "%d", class);
304 return buffer;
305 }
306 }
307
308 /**
309 * megasas_decode_evt: Decode FW AEN event and print critical event
310 * for information.
311 * @instance: Adapter soft state
312 */
313 static void
314 megasas_decode_evt(struct megasas_instance *instance)
315 {
316 struct megasas_evt_detail *evt_detail = instance->evt_detail;
317 union megasas_evt_class_locale class_locale;
318 class_locale.word = le32_to_cpu(evt_detail->cl.word);
319
320 if (class_locale.members.class >= MFI_EVT_CLASS_CRITICAL)
321 dev_info(&instance->pdev->dev, "%d (%s/0x%04x/%s) - %s\n",
322 le32_to_cpu(evt_detail->seq_num),
323 format_timestamp(le32_to_cpu(evt_detail->time_stamp)),
324 (class_locale.members.locale),
325 format_class(class_locale.members.class),
326 evt_detail->description);
327 }
328
329 /**
330 * The following functions are defined for xscale
331 * (deviceid : 1064R, PERC5) controllers
332 */
333
334 /**
335 * megasas_enable_intr_xscale - Enables interrupts
336 * @regs: MFI register set
337 */
338 static inline void
339 megasas_enable_intr_xscale(struct megasas_instance *instance)
340 {
341 struct megasas_register_set __iomem *regs;
342
343 regs = instance->reg_set;
344 writel(0, &(regs)->outbound_intr_mask);
345
346 /* Dummy readl to force pci flush */
347 readl(&regs->outbound_intr_mask);
348 }
349
350 /**
351 * megasas_disable_intr_xscale -Disables interrupt
352 * @regs: MFI register set
353 */
354 static inline void
355 megasas_disable_intr_xscale(struct megasas_instance *instance)
356 {
357 struct megasas_register_set __iomem *regs;
358 u32 mask = 0x1f;
359
360 regs = instance->reg_set;
361 writel(mask, &regs->outbound_intr_mask);
362 /* Dummy readl to force pci flush */
363 readl(&regs->outbound_intr_mask);
364 }
365
366 /**
367 * megasas_read_fw_status_reg_xscale - returns the current FW status value
368 * @regs: MFI register set
369 */
370 static u32
371 megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs)
372 {
373 return readl(&(regs)->outbound_msg_0);
374 }
375 /**
376 * megasas_clear_interrupt_xscale - Check & clear interrupt
377 * @regs: MFI register set
378 */
379 static int
380 megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs)
381 {
382 u32 status;
383 u32 mfiStatus = 0;
384
385 /*
386 * Check if it is our interrupt
387 */
388 status = readl(&regs->outbound_intr_status);
389
390 if (status & MFI_OB_INTR_STATUS_MASK)
391 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
392 if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
393 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
394
395 /*
396 * Clear the interrupt by writing back the same value
397 */
398 if (mfiStatus)
399 writel(status, &regs->outbound_intr_status);
400
401 /* Dummy readl to force pci flush */
402 readl(&regs->outbound_intr_status);
403
404 return mfiStatus;
405 }
406
407 /**
408 * megasas_fire_cmd_xscale - Sends command to the FW
409 * @frame_phys_addr : Physical address of cmd
410 * @frame_count : Number of frames for the command
411 * @regs : MFI register set
412 */
413 static inline void
414 megasas_fire_cmd_xscale(struct megasas_instance *instance,
415 dma_addr_t frame_phys_addr,
416 u32 frame_count,
417 struct megasas_register_set __iomem *regs)
418 {
419 unsigned long flags;
420
421 spin_lock_irqsave(&instance->hba_lock, flags);
422 writel((frame_phys_addr >> 3)|(frame_count),
423 &(regs)->inbound_queue_port);
424 spin_unlock_irqrestore(&instance->hba_lock, flags);
425 }
426
427 /**
428 * megasas_adp_reset_xscale - For controller reset
429 * @regs: MFI register set
430 */
431 static int
432 megasas_adp_reset_xscale(struct megasas_instance *instance,
433 struct megasas_register_set __iomem *regs)
434 {
435 u32 i;
436 u32 pcidata;
437
438 writel(MFI_ADP_RESET, &regs->inbound_doorbell);
439
440 for (i = 0; i < 3; i++)
441 msleep(1000); /* sleep for 3 secs */
442 pcidata = 0;
443 pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
444 dev_notice(&instance->pdev->dev, "pcidata = %x\n", pcidata);
445 if (pcidata & 0x2) {
446 dev_notice(&instance->pdev->dev, "mfi 1068 offset read=%x\n", pcidata);
447 pcidata &= ~0x2;
448 pci_write_config_dword(instance->pdev,
449 MFI_1068_PCSR_OFFSET, pcidata);
450
451 for (i = 0; i < 2; i++)
452 msleep(1000); /* need to wait 2 secs again */
453
454 pcidata = 0;
455 pci_read_config_dword(instance->pdev,
456 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
457 dev_notice(&instance->pdev->dev, "1068 offset handshake read=%x\n", pcidata);
458 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
459 dev_notice(&instance->pdev->dev, "1068 offset pcidt=%x\n", pcidata);
460 pcidata = 0;
461 pci_write_config_dword(instance->pdev,
462 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
463 }
464 }
465 return 0;
466 }
467
468 /**
469 * megasas_check_reset_xscale - For controller reset check
470 * @regs: MFI register set
471 */
472 static int
473 megasas_check_reset_xscale(struct megasas_instance *instance,
474 struct megasas_register_set __iomem *regs)
475 {
476 if ((instance->adprecovery != MEGASAS_HBA_OPERATIONAL) &&
477 (le32_to_cpu(*instance->consumer) ==
478 MEGASAS_ADPRESET_INPROG_SIGN))
479 return 1;
480 return 0;
481 }
482
483 static struct megasas_instance_template megasas_instance_template_xscale = {
484
485 .fire_cmd = megasas_fire_cmd_xscale,
486 .enable_intr = megasas_enable_intr_xscale,
487 .disable_intr = megasas_disable_intr_xscale,
488 .clear_intr = megasas_clear_intr_xscale,
489 .read_fw_status_reg = megasas_read_fw_status_reg_xscale,
490 .adp_reset = megasas_adp_reset_xscale,
491 .check_reset = megasas_check_reset_xscale,
492 .service_isr = megasas_isr,
493 .tasklet = megasas_complete_cmd_dpc,
494 .init_adapter = megasas_init_adapter_mfi,
495 .build_and_issue_cmd = megasas_build_and_issue_cmd,
496 .issue_dcmd = megasas_issue_dcmd,
497 };
498
499 /**
500 * This is the end of set of functions & definitions specific
501 * to xscale (deviceid : 1064R, PERC5) controllers
502 */
503
504 /**
505 * The following functions are defined for ppc (deviceid : 0x60)
506 * controllers
507 */
508
509 /**
510 * megasas_enable_intr_ppc - Enables interrupts
511 * @regs: MFI register set
512 */
513 static inline void
514 megasas_enable_intr_ppc(struct megasas_instance *instance)
515 {
516 struct megasas_register_set __iomem *regs;
517
518 regs = instance->reg_set;
519 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
520
521 writel(~0x80000000, &(regs)->outbound_intr_mask);
522
523 /* Dummy readl to force pci flush */
524 readl(&regs->outbound_intr_mask);
525 }
526
527 /**
528 * megasas_disable_intr_ppc - Disable interrupt
529 * @regs: MFI register set
530 */
531 static inline void
532 megasas_disable_intr_ppc(struct megasas_instance *instance)
533 {
534 struct megasas_register_set __iomem *regs;
535 u32 mask = 0xFFFFFFFF;
536
537 regs = instance->reg_set;
538 writel(mask, &regs->outbound_intr_mask);
539 /* Dummy readl to force pci flush */
540 readl(&regs->outbound_intr_mask);
541 }
542
543 /**
544 * megasas_read_fw_status_reg_ppc - returns the current FW status value
545 * @regs: MFI register set
546 */
547 static u32
548 megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs)
549 {
550 return readl(&(regs)->outbound_scratch_pad);
551 }
552
553 /**
554 * megasas_clear_interrupt_ppc - Check & clear interrupt
555 * @regs: MFI register set
556 */
557 static int
558 megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs)
559 {
560 u32 status, mfiStatus = 0;
561
562 /*
563 * Check if it is our interrupt
564 */
565 status = readl(&regs->outbound_intr_status);
566
567 if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT)
568 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
569
570 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT)
571 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
572
573 /*
574 * Clear the interrupt by writing back the same value
575 */
576 writel(status, &regs->outbound_doorbell_clear);
577
578 /* Dummy readl to force pci flush */
579 readl(&regs->outbound_doorbell_clear);
580
581 return mfiStatus;
582 }
583
584 /**
585 * megasas_fire_cmd_ppc - Sends command to the FW
586 * @frame_phys_addr : Physical address of cmd
587 * @frame_count : Number of frames for the command
588 * @regs : MFI register set
589 */
590 static inline void
591 megasas_fire_cmd_ppc(struct megasas_instance *instance,
592 dma_addr_t frame_phys_addr,
593 u32 frame_count,
594 struct megasas_register_set __iomem *regs)
595 {
596 unsigned long flags;
597
598 spin_lock_irqsave(&instance->hba_lock, flags);
599 writel((frame_phys_addr | (frame_count<<1))|1,
600 &(regs)->inbound_queue_port);
601 spin_unlock_irqrestore(&instance->hba_lock, flags);
602 }
603
604 /**
605 * megasas_check_reset_ppc - For controller reset check
606 * @regs: MFI register set
607 */
608 static int
609 megasas_check_reset_ppc(struct megasas_instance *instance,
610 struct megasas_register_set __iomem *regs)
611 {
612 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL)
613 return 1;
614
615 return 0;
616 }
617
618 static struct megasas_instance_template megasas_instance_template_ppc = {
619
620 .fire_cmd = megasas_fire_cmd_ppc,
621 .enable_intr = megasas_enable_intr_ppc,
622 .disable_intr = megasas_disable_intr_ppc,
623 .clear_intr = megasas_clear_intr_ppc,
624 .read_fw_status_reg = megasas_read_fw_status_reg_ppc,
625 .adp_reset = megasas_adp_reset_xscale,
626 .check_reset = megasas_check_reset_ppc,
627 .service_isr = megasas_isr,
628 .tasklet = megasas_complete_cmd_dpc,
629 .init_adapter = megasas_init_adapter_mfi,
630 .build_and_issue_cmd = megasas_build_and_issue_cmd,
631 .issue_dcmd = megasas_issue_dcmd,
632 };
633
634 /**
635 * megasas_enable_intr_skinny - Enables interrupts
636 * @regs: MFI register set
637 */
638 static inline void
639 megasas_enable_intr_skinny(struct megasas_instance *instance)
640 {
641 struct megasas_register_set __iomem *regs;
642
643 regs = instance->reg_set;
644 writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
645
646 writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
647
648 /* Dummy readl to force pci flush */
649 readl(&regs->outbound_intr_mask);
650 }
651
652 /**
653 * megasas_disable_intr_skinny - Disables interrupt
654 * @regs: MFI register set
655 */
656 static inline void
657 megasas_disable_intr_skinny(struct megasas_instance *instance)
658 {
659 struct megasas_register_set __iomem *regs;
660 u32 mask = 0xFFFFFFFF;
661
662 regs = instance->reg_set;
663 writel(mask, &regs->outbound_intr_mask);
664 /* Dummy readl to force pci flush */
665 readl(&regs->outbound_intr_mask);
666 }
667
668 /**
669 * megasas_read_fw_status_reg_skinny - returns the current FW status value
670 * @regs: MFI register set
671 */
672 static u32
673 megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem *regs)
674 {
675 return readl(&(regs)->outbound_scratch_pad);
676 }
677
678 /**
679 * megasas_clear_interrupt_skinny - Check & clear interrupt
680 * @regs: MFI register set
681 */
682 static int
683 megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs)
684 {
685 u32 status;
686 u32 mfiStatus = 0;
687
688 /*
689 * Check if it is our interrupt
690 */
691 status = readl(&regs->outbound_intr_status);
692
693 if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
694 return 0;
695 }
696
697 /*
698 * Check if it is our interrupt
699 */
700 if ((megasas_read_fw_status_reg_skinny(regs) & MFI_STATE_MASK) ==
701 MFI_STATE_FAULT) {
702 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
703 } else
704 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
705
706 /*
707 * Clear the interrupt by writing back the same value
708 */
709 writel(status, &regs->outbound_intr_status);
710
711 /*
712 * dummy read to flush PCI
713 */
714 readl(&regs->outbound_intr_status);
715
716 return mfiStatus;
717 }
718
719 /**
720 * megasas_fire_cmd_skinny - Sends command to the FW
721 * @frame_phys_addr : Physical address of cmd
722 * @frame_count : Number of frames for the command
723 * @regs : MFI register set
724 */
725 static inline void
726 megasas_fire_cmd_skinny(struct megasas_instance *instance,
727 dma_addr_t frame_phys_addr,
728 u32 frame_count,
729 struct megasas_register_set __iomem *regs)
730 {
731 unsigned long flags;
732
733 spin_lock_irqsave(&instance->hba_lock, flags);
734 writel(upper_32_bits(frame_phys_addr),
735 &(regs)->inbound_high_queue_port);
736 writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1,
737 &(regs)->inbound_low_queue_port);
738 spin_unlock_irqrestore(&instance->hba_lock, flags);
739 }
740
741 /**
742 * megasas_check_reset_skinny - For controller reset check
743 * @regs: MFI register set
744 */
745 static int
746 megasas_check_reset_skinny(struct megasas_instance *instance,
747 struct megasas_register_set __iomem *regs)
748 {
749 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL)
750 return 1;
751
752 return 0;
753 }
754
755 static struct megasas_instance_template megasas_instance_template_skinny = {
756
757 .fire_cmd = megasas_fire_cmd_skinny,
758 .enable_intr = megasas_enable_intr_skinny,
759 .disable_intr = megasas_disable_intr_skinny,
760 .clear_intr = megasas_clear_intr_skinny,
761 .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
762 .adp_reset = megasas_adp_reset_gen2,
763 .check_reset = megasas_check_reset_skinny,
764 .service_isr = megasas_isr,
765 .tasklet = megasas_complete_cmd_dpc,
766 .init_adapter = megasas_init_adapter_mfi,
767 .build_and_issue_cmd = megasas_build_and_issue_cmd,
768 .issue_dcmd = megasas_issue_dcmd,
769 };
770
771
772 /**
773 * The following functions are defined for gen2 (deviceid : 0x78 0x79)
774 * controllers
775 */
776
777 /**
778 * megasas_enable_intr_gen2 - Enables interrupts
779 * @regs: MFI register set
780 */
781 static inline void
782 megasas_enable_intr_gen2(struct megasas_instance *instance)
783 {
784 struct megasas_register_set __iomem *regs;
785
786 regs = instance->reg_set;
787 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
788
789 /* write ~0x00000005 (4 & 1) to the intr mask*/
790 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
791
792 /* Dummy readl to force pci flush */
793 readl(&regs->outbound_intr_mask);
794 }
795
796 /**
797 * megasas_disable_intr_gen2 - Disables interrupt
798 * @regs: MFI register set
799 */
800 static inline void
801 megasas_disable_intr_gen2(struct megasas_instance *instance)
802 {
803 struct megasas_register_set __iomem *regs;
804 u32 mask = 0xFFFFFFFF;
805
806 regs = instance->reg_set;
807 writel(mask, &regs->outbound_intr_mask);
808 /* Dummy readl to force pci flush */
809 readl(&regs->outbound_intr_mask);
810 }
811
812 /**
813 * megasas_read_fw_status_reg_gen2 - returns the current FW status value
814 * @regs: MFI register set
815 */
816 static u32
817 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs)
818 {
819 return readl(&(regs)->outbound_scratch_pad);
820 }
821
822 /**
823 * megasas_clear_interrupt_gen2 - Check & clear interrupt
824 * @regs: MFI register set
825 */
826 static int
827 megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs)
828 {
829 u32 status;
830 u32 mfiStatus = 0;
831
832 /*
833 * Check if it is our interrupt
834 */
835 status = readl(&regs->outbound_intr_status);
836
837 if (status & MFI_INTR_FLAG_REPLY_MESSAGE) {
838 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
839 }
840 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
841 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
842 }
843
844 /*
845 * Clear the interrupt by writing back the same value
846 */
847 if (mfiStatus)
848 writel(status, &regs->outbound_doorbell_clear);
849
850 /* Dummy readl to force pci flush */
851 readl(&regs->outbound_intr_status);
852
853 return mfiStatus;
854 }
855 /**
856 * megasas_fire_cmd_gen2 - Sends command to the FW
857 * @frame_phys_addr : Physical address of cmd
858 * @frame_count : Number of frames for the command
859 * @regs : MFI register set
860 */
861 static inline void
862 megasas_fire_cmd_gen2(struct megasas_instance *instance,
863 dma_addr_t frame_phys_addr,
864 u32 frame_count,
865 struct megasas_register_set __iomem *regs)
866 {
867 unsigned long flags;
868
869 spin_lock_irqsave(&instance->hba_lock, flags);
870 writel((frame_phys_addr | (frame_count<<1))|1,
871 &(regs)->inbound_queue_port);
872 spin_unlock_irqrestore(&instance->hba_lock, flags);
873 }
874
875 /**
876 * megasas_adp_reset_gen2 - For controller reset
877 * @regs: MFI register set
878 */
879 static int
880 megasas_adp_reset_gen2(struct megasas_instance *instance,
881 struct megasas_register_set __iomem *reg_set)
882 {
883 u32 retry = 0 ;
884 u32 HostDiag;
885 u32 __iomem *seq_offset = &reg_set->seq_offset;
886 u32 __iomem *hostdiag_offset = &reg_set->host_diag;
887
888 if (instance->instancet == &megasas_instance_template_skinny) {
889 seq_offset = &reg_set->fusion_seq_offset;
890 hostdiag_offset = &reg_set->fusion_host_diag;
891 }
892
893 writel(0, seq_offset);
894 writel(4, seq_offset);
895 writel(0xb, seq_offset);
896 writel(2, seq_offset);
897 writel(7, seq_offset);
898 writel(0xd, seq_offset);
899
900 msleep(1000);
901
902 HostDiag = (u32)readl(hostdiag_offset);
903
904 while (!(HostDiag & DIAG_WRITE_ENABLE)) {
905 msleep(100);
906 HostDiag = (u32)readl(hostdiag_offset);
907 dev_notice(&instance->pdev->dev, "RESETGEN2: retry=%x, hostdiag=%x\n",
908 retry, HostDiag);
909
910 if (retry++ >= 100)
911 return 1;
912
913 }
914
915 dev_notice(&instance->pdev->dev, "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
916
917 writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset);
918
919 ssleep(10);
920
921 HostDiag = (u32)readl(hostdiag_offset);
922 while (HostDiag & DIAG_RESET_ADAPTER) {
923 msleep(100);
924 HostDiag = (u32)readl(hostdiag_offset);
925 dev_notice(&instance->pdev->dev, "RESET_GEN2: retry=%x, hostdiag=%x\n",
926 retry, HostDiag);
927
928 if (retry++ >= 1000)
929 return 1;
930
931 }
932 return 0;
933 }
934
935 /**
936 * megasas_check_reset_gen2 - For controller reset check
937 * @regs: MFI register set
938 */
939 static int
940 megasas_check_reset_gen2(struct megasas_instance *instance,
941 struct megasas_register_set __iomem *regs)
942 {
943 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
944 return 1;
945 }
946
947 return 0;
948 }
949
950 static struct megasas_instance_template megasas_instance_template_gen2 = {
951
952 .fire_cmd = megasas_fire_cmd_gen2,
953 .enable_intr = megasas_enable_intr_gen2,
954 .disable_intr = megasas_disable_intr_gen2,
955 .clear_intr = megasas_clear_intr_gen2,
956 .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
957 .adp_reset = megasas_adp_reset_gen2,
958 .check_reset = megasas_check_reset_gen2,
959 .service_isr = megasas_isr,
960 .tasklet = megasas_complete_cmd_dpc,
961 .init_adapter = megasas_init_adapter_mfi,
962 .build_and_issue_cmd = megasas_build_and_issue_cmd,
963 .issue_dcmd = megasas_issue_dcmd,
964 };
965
966 /**
967 * This is the end of set of functions & definitions
968 * specific to gen2 (deviceid : 0x78, 0x79) controllers
969 */
970
971 /*
972 * Template added for TB (Fusion)
973 */
974 extern struct megasas_instance_template megasas_instance_template_fusion;
975
976 /**
977 * megasas_issue_polled - Issues a polling command
978 * @instance: Adapter soft state
979 * @cmd: Command packet to be issued
980 *
981 * For polling, MFI requires the cmd_status to be set to MFI_STAT_INVALID_STATUS before posting.
982 */
983 int
984 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
985 {
986 int seconds;
987 struct megasas_header *frame_hdr = &cmd->frame->hdr;
988
989 frame_hdr->cmd_status = MFI_CMD_STATUS_POLL_MODE;
990 frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
991
992 /*
993 * Issue the frame using inbound queue port
994 */
995 instance->instancet->issue_dcmd(instance, cmd);
996
997 /*
998 * Wait for cmd_status to change
999 */
1000 if (instance->requestorId)
1001 seconds = MEGASAS_ROUTINE_WAIT_TIME_VF;
1002 else
1003 seconds = MFI_POLL_TIMEOUT_SECS;
1004 return wait_and_poll(instance, cmd, seconds);
1005 }
1006
1007 /**
1008 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds
1009 * @instance: Adapter soft state
1010 * @cmd: Command to be issued
1011 * @timeout: Timeout in seconds
1012 *
1013 * This function waits on an event for the command to be returned from ISR.
1014 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1015 * Used to issue ioctl commands.
1016 */
1017 int
1018 megasas_issue_blocked_cmd(struct megasas_instance *instance,
1019 struct megasas_cmd *cmd, int timeout)
1020 {
1021 int ret = 0;
1022
1023 cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
1024
1025 instance->instancet->issue_dcmd(instance, cmd);
1026 if (timeout) {
1027 ret = wait_event_timeout(instance->int_cmd_wait_q,
1028 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS, timeout * HZ);
1029 if (!ret)
1030 return 1;
1031 } else
1032 wait_event(instance->int_cmd_wait_q,
1033 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS);
1034
1035 return (cmd->cmd_status_drv == MFI_STAT_OK) ?
1036 0 : 1;
1037 }
1038
1039 /**
1040 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd
1041 * @instance: Adapter soft state
1042 * @cmd_to_abort: Previously issued cmd to be aborted
1043 * @timeout: Timeout in seconds
1044 *
1045 * MFI firmware can abort previously issued AEN comamnd (automatic event
1046 * notification). The megasas_issue_blocked_abort_cmd() issues such abort
1047 * cmd and waits for return status.
1048 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
1049 */
1050 static int
1051 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
1052 struct megasas_cmd *cmd_to_abort, int timeout)
1053 {
1054 struct megasas_cmd *cmd;
1055 struct megasas_abort_frame *abort_fr;
1056 int ret = 0;
1057
1058 cmd = megasas_get_cmd(instance);
1059
1060 if (!cmd)
1061 return -1;
1062
1063 abort_fr = &cmd->frame->abort;
1064
1065 /*
1066 * Prepare and issue the abort frame
1067 */
1068 abort_fr->cmd = MFI_CMD_ABORT;
1069 abort_fr->cmd_status = MFI_STAT_INVALID_STATUS;
1070 abort_fr->flags = cpu_to_le16(0);
1071 abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index);
1072 abort_fr->abort_mfi_phys_addr_lo =
1073 cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr));
1074 abort_fr->abort_mfi_phys_addr_hi =
1075 cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr));
1076
1077 cmd->sync_cmd = 1;
1078 cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
1079
1080 instance->instancet->issue_dcmd(instance, cmd);
1081
1082 if (timeout) {
1083 ret = wait_event_timeout(instance->abort_cmd_wait_q,
1084 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS, timeout * HZ);
1085 if (!ret) {
1086 dev_err(&instance->pdev->dev, "Command timedout"
1087 "from %s\n", __func__);
1088 return 1;
1089 }
1090 } else
1091 wait_event(instance->abort_cmd_wait_q,
1092 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS);
1093
1094 cmd->sync_cmd = 0;
1095
1096 megasas_return_cmd(instance, cmd);
1097 return 0;
1098 }
1099
1100 /**
1101 * megasas_make_sgl32 - Prepares 32-bit SGL
1102 * @instance: Adapter soft state
1103 * @scp: SCSI command from the mid-layer
1104 * @mfi_sgl: SGL to be filled in
1105 *
1106 * If successful, this function returns the number of SG elements. Otherwise,
1107 * it returnes -1.
1108 */
1109 static int
1110 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
1111 union megasas_sgl *mfi_sgl)
1112 {
1113 int i;
1114 int sge_count;
1115 struct scatterlist *os_sgl;
1116
1117 sge_count = scsi_dma_map(scp);
1118 BUG_ON(sge_count < 0);
1119
1120 if (sge_count) {
1121 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1122 mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1123 mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl));
1124 }
1125 }
1126 return sge_count;
1127 }
1128
1129 /**
1130 * megasas_make_sgl64 - Prepares 64-bit SGL
1131 * @instance: Adapter soft state
1132 * @scp: SCSI command from the mid-layer
1133 * @mfi_sgl: SGL to be filled in
1134 *
1135 * If successful, this function returns the number of SG elements. Otherwise,
1136 * it returnes -1.
1137 */
1138 static int
1139 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
1140 union megasas_sgl *mfi_sgl)
1141 {
1142 int i;
1143 int sge_count;
1144 struct scatterlist *os_sgl;
1145
1146 sge_count = scsi_dma_map(scp);
1147 BUG_ON(sge_count < 0);
1148
1149 if (sge_count) {
1150 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1151 mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1152 mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl));
1153 }
1154 }
1155 return sge_count;
1156 }
1157
1158 /**
1159 * megasas_make_sgl_skinny - Prepares IEEE SGL
1160 * @instance: Adapter soft state
1161 * @scp: SCSI command from the mid-layer
1162 * @mfi_sgl: SGL to be filled in
1163 *
1164 * If successful, this function returns the number of SG elements. Otherwise,
1165 * it returnes -1.
1166 */
1167 static int
1168 megasas_make_sgl_skinny(struct megasas_instance *instance,
1169 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
1170 {
1171 int i;
1172 int sge_count;
1173 struct scatterlist *os_sgl;
1174
1175 sge_count = scsi_dma_map(scp);
1176
1177 if (sge_count) {
1178 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1179 mfi_sgl->sge_skinny[i].length =
1180 cpu_to_le32(sg_dma_len(os_sgl));
1181 mfi_sgl->sge_skinny[i].phys_addr =
1182 cpu_to_le64(sg_dma_address(os_sgl));
1183 mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0);
1184 }
1185 }
1186 return sge_count;
1187 }
1188
1189 /**
1190 * megasas_get_frame_count - Computes the number of frames
1191 * @frame_type : type of frame- io or pthru frame
1192 * @sge_count : number of sg elements
1193 *
1194 * Returns the number of frames required for numnber of sge's (sge_count)
1195 */
1196
1197 static u32 megasas_get_frame_count(struct megasas_instance *instance,
1198 u8 sge_count, u8 frame_type)
1199 {
1200 int num_cnt;
1201 int sge_bytes;
1202 u32 sge_sz;
1203 u32 frame_count = 0;
1204
1205 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
1206 sizeof(struct megasas_sge32);
1207
1208 if (instance->flag_ieee) {
1209 sge_sz = sizeof(struct megasas_sge_skinny);
1210 }
1211
1212 /*
1213 * Main frame can contain 2 SGEs for 64-bit SGLs and
1214 * 3 SGEs for 32-bit SGLs for ldio &
1215 * 1 SGEs for 64-bit SGLs and
1216 * 2 SGEs for 32-bit SGLs for pthru frame
1217 */
1218 if (unlikely(frame_type == PTHRU_FRAME)) {
1219 if (instance->flag_ieee == 1) {
1220 num_cnt = sge_count - 1;
1221 } else if (IS_DMA64)
1222 num_cnt = sge_count - 1;
1223 else
1224 num_cnt = sge_count - 2;
1225 } else {
1226 if (instance->flag_ieee == 1) {
1227 num_cnt = sge_count - 1;
1228 } else if (IS_DMA64)
1229 num_cnt = sge_count - 2;
1230 else
1231 num_cnt = sge_count - 3;
1232 }
1233
1234 if (num_cnt > 0) {
1235 sge_bytes = sge_sz * num_cnt;
1236
1237 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
1238 ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
1239 }
1240 /* Main frame */
1241 frame_count += 1;
1242
1243 if (frame_count > 7)
1244 frame_count = 8;
1245 return frame_count;
1246 }
1247
1248 /**
1249 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
1250 * @instance: Adapter soft state
1251 * @scp: SCSI command
1252 * @cmd: Command to be prepared in
1253 *
1254 * This function prepares CDB commands. These are typcially pass-through
1255 * commands to the devices.
1256 */
1257 static int
1258 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
1259 struct megasas_cmd *cmd)
1260 {
1261 u32 is_logical;
1262 u32 device_id;
1263 u16 flags = 0;
1264 struct megasas_pthru_frame *pthru;
1265
1266 is_logical = MEGASAS_IS_LOGICAL(scp);
1267 device_id = MEGASAS_DEV_INDEX(scp);
1268 pthru = (struct megasas_pthru_frame *)cmd->frame;
1269
1270 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1271 flags = MFI_FRAME_DIR_WRITE;
1272 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1273 flags = MFI_FRAME_DIR_READ;
1274 else if (scp->sc_data_direction == PCI_DMA_NONE)
1275 flags = MFI_FRAME_DIR_NONE;
1276
1277 if (instance->flag_ieee == 1) {
1278 flags |= MFI_FRAME_IEEE;
1279 }
1280
1281 /*
1282 * Prepare the DCDB frame
1283 */
1284 pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
1285 pthru->cmd_status = 0x0;
1286 pthru->scsi_status = 0x0;
1287 pthru->target_id = device_id;
1288 pthru->lun = scp->device->lun;
1289 pthru->cdb_len = scp->cmd_len;
1290 pthru->timeout = 0;
1291 pthru->pad_0 = 0;
1292 pthru->flags = cpu_to_le16(flags);
1293 pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp));
1294
1295 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1296
1297 /*
1298 * If the command is for the tape device, set the
1299 * pthru timeout to the os layer timeout value.
1300 */
1301 if (scp->device->type == TYPE_TAPE) {
1302 if ((scp->request->timeout / HZ) > 0xFFFF)
1303 pthru->timeout = cpu_to_le16(0xFFFF);
1304 else
1305 pthru->timeout = cpu_to_le16(scp->request->timeout / HZ);
1306 }
1307
1308 /*
1309 * Construct SGL
1310 */
1311 if (instance->flag_ieee == 1) {
1312 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1313 pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
1314 &pthru->sgl);
1315 } else if (IS_DMA64) {
1316 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1317 pthru->sge_count = megasas_make_sgl64(instance, scp,
1318 &pthru->sgl);
1319 } else
1320 pthru->sge_count = megasas_make_sgl32(instance, scp,
1321 &pthru->sgl);
1322
1323 if (pthru->sge_count > instance->max_num_sge) {
1324 dev_err(&instance->pdev->dev, "DCDB too many SGE NUM=%x\n",
1325 pthru->sge_count);
1326 return 0;
1327 }
1328
1329 /*
1330 * Sense info specific
1331 */
1332 pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
1333 pthru->sense_buf_phys_addr_hi =
1334 cpu_to_le32(upper_32_bits(cmd->sense_phys_addr));
1335 pthru->sense_buf_phys_addr_lo =
1336 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
1337
1338 /*
1339 * Compute the total number of frames this command consumes. FW uses
1340 * this number to pull sufficient number of frames from host memory.
1341 */
1342 cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
1343 PTHRU_FRAME);
1344
1345 return cmd->frame_count;
1346 }
1347
1348 /**
1349 * megasas_build_ldio - Prepares IOs to logical devices
1350 * @instance: Adapter soft state
1351 * @scp: SCSI command
1352 * @cmd: Command to be prepared
1353 *
1354 * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1355 */
1356 static int
1357 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1358 struct megasas_cmd *cmd)
1359 {
1360 u32 device_id;
1361 u8 sc = scp->cmnd[0];
1362 u16 flags = 0;
1363 struct megasas_io_frame *ldio;
1364
1365 device_id = MEGASAS_DEV_INDEX(scp);
1366 ldio = (struct megasas_io_frame *)cmd->frame;
1367
1368 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1369 flags = MFI_FRAME_DIR_WRITE;
1370 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1371 flags = MFI_FRAME_DIR_READ;
1372
1373 if (instance->flag_ieee == 1) {
1374 flags |= MFI_FRAME_IEEE;
1375 }
1376
1377 /*
1378 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
1379 */
1380 ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
1381 ldio->cmd_status = 0x0;
1382 ldio->scsi_status = 0x0;
1383 ldio->target_id = device_id;
1384 ldio->timeout = 0;
1385 ldio->reserved_0 = 0;
1386 ldio->pad_0 = 0;
1387 ldio->flags = cpu_to_le16(flags);
1388 ldio->start_lba_hi = 0;
1389 ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
1390
1391 /*
1392 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1393 */
1394 if (scp->cmd_len == 6) {
1395 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]);
1396 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) |
1397 ((u32) scp->cmnd[2] << 8) |
1398 (u32) scp->cmnd[3]);
1399
1400 ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF);
1401 }
1402
1403 /*
1404 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1405 */
1406 else if (scp->cmd_len == 10) {
1407 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] |
1408 ((u32) scp->cmnd[7] << 8));
1409 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1410 ((u32) scp->cmnd[3] << 16) |
1411 ((u32) scp->cmnd[4] << 8) |
1412 (u32) scp->cmnd[5]);
1413 }
1414
1415 /*
1416 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1417 */
1418 else if (scp->cmd_len == 12) {
1419 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1420 ((u32) scp->cmnd[7] << 16) |
1421 ((u32) scp->cmnd[8] << 8) |
1422 (u32) scp->cmnd[9]);
1423
1424 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1425 ((u32) scp->cmnd[3] << 16) |
1426 ((u32) scp->cmnd[4] << 8) |
1427 (u32) scp->cmnd[5]);
1428 }
1429
1430 /*
1431 * 16-byte READ(0x88) or WRITE(0x8A) cdb
1432 */
1433 else if (scp->cmd_len == 16) {
1434 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) |
1435 ((u32) scp->cmnd[11] << 16) |
1436 ((u32) scp->cmnd[12] << 8) |
1437 (u32) scp->cmnd[13]);
1438
1439 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1440 ((u32) scp->cmnd[7] << 16) |
1441 ((u32) scp->cmnd[8] << 8) |
1442 (u32) scp->cmnd[9]);
1443
1444 ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1445 ((u32) scp->cmnd[3] << 16) |
1446 ((u32) scp->cmnd[4] << 8) |
1447 (u32) scp->cmnd[5]);
1448
1449 }
1450
1451 /*
1452 * Construct SGL
1453 */
1454 if (instance->flag_ieee) {
1455 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1456 ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
1457 &ldio->sgl);
1458 } else if (IS_DMA64) {
1459 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1460 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
1461 } else
1462 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
1463
1464 if (ldio->sge_count > instance->max_num_sge) {
1465 dev_err(&instance->pdev->dev, "build_ld_io: sge_count = %x\n",
1466 ldio->sge_count);
1467 return 0;
1468 }
1469
1470 /*
1471 * Sense info specific
1472 */
1473 ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
1474 ldio->sense_buf_phys_addr_hi = 0;
1475 ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr);
1476
1477 /*
1478 * Compute the total number of frames this command consumes. FW uses
1479 * this number to pull sufficient number of frames from host memory.
1480 */
1481 cmd->frame_count = megasas_get_frame_count(instance,
1482 ldio->sge_count, IO_FRAME);
1483
1484 return cmd->frame_count;
1485 }
1486
1487 /**
1488 * megasas_cmd_type - Checks if the cmd is for logical drive/sysPD
1489 * and whether it's RW or non RW
1490 * @scmd: SCSI command
1491 *
1492 */
1493 inline int megasas_cmd_type(struct scsi_cmnd *cmd)
1494 {
1495 int ret;
1496
1497 switch (cmd->cmnd[0]) {
1498 case READ_10:
1499 case WRITE_10:
1500 case READ_12:
1501 case WRITE_12:
1502 case READ_6:
1503 case WRITE_6:
1504 case READ_16:
1505 case WRITE_16:
1506 ret = (MEGASAS_IS_LOGICAL(cmd)) ?
1507 READ_WRITE_LDIO : READ_WRITE_SYSPDIO;
1508 break;
1509 default:
1510 ret = (MEGASAS_IS_LOGICAL(cmd)) ?
1511 NON_READ_WRITE_LDIO : NON_READ_WRITE_SYSPDIO;
1512 }
1513 return ret;
1514 }
1515
1516 /**
1517 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds
1518 * in FW
1519 * @instance: Adapter soft state
1520 */
1521 static inline void
1522 megasas_dump_pending_frames(struct megasas_instance *instance)
1523 {
1524 struct megasas_cmd *cmd;
1525 int i,n;
1526 union megasas_sgl *mfi_sgl;
1527 struct megasas_io_frame *ldio;
1528 struct megasas_pthru_frame *pthru;
1529 u32 sgcount;
1530 u32 max_cmd = instance->max_fw_cmds;
1531
1532 dev_err(&instance->pdev->dev, "[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
1533 dev_err(&instance->pdev->dev, "[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1534 if (IS_DMA64)
1535 dev_err(&instance->pdev->dev, "[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1536 else
1537 dev_err(&instance->pdev->dev, "[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1538
1539 dev_err(&instance->pdev->dev, "[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1540 for (i = 0; i < max_cmd; i++) {
1541 cmd = instance->cmd_list[i];
1542 if (!cmd->scmd)
1543 continue;
1544 dev_err(&instance->pdev->dev, "[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
1545 if (megasas_cmd_type(cmd->scmd) == READ_WRITE_LDIO) {
1546 ldio = (struct megasas_io_frame *)cmd->frame;
1547 mfi_sgl = &ldio->sgl;
1548 sgcount = ldio->sge_count;
1549 dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x,"
1550 " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1551 instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id,
1552 le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi),
1553 le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount);
1554 } else {
1555 pthru = (struct megasas_pthru_frame *) cmd->frame;
1556 mfi_sgl = &pthru->sgl;
1557 sgcount = pthru->sge_count;
1558 dev_err(&instance->pdev->dev, "[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, "
1559 "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1560 instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id,
1561 pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len),
1562 le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount);
1563 }
1564 if (megasas_dbg_lvl & MEGASAS_DBG_LVL) {
1565 for (n = 0; n < sgcount; n++) {
1566 if (IS_DMA64)
1567 dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%llx\n",
1568 le32_to_cpu(mfi_sgl->sge64[n].length),
1569 le64_to_cpu(mfi_sgl->sge64[n].phys_addr));
1570 else
1571 dev_err(&instance->pdev->dev, "sgl len : 0x%x, sgl addr : 0x%x\n",
1572 le32_to_cpu(mfi_sgl->sge32[n].length),
1573 le32_to_cpu(mfi_sgl->sge32[n].phys_addr));
1574 }
1575 }
1576 } /*for max_cmd*/
1577 dev_err(&instance->pdev->dev, "[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1578 for (i = 0; i < max_cmd; i++) {
1579
1580 cmd = instance->cmd_list[i];
1581
1582 if (cmd->sync_cmd == 1)
1583 dev_err(&instance->pdev->dev, "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1584 }
1585 dev_err(&instance->pdev->dev, "[%d]: Dumping Done\n\n",instance->host->host_no);
1586 }
1587
1588 u32
1589 megasas_build_and_issue_cmd(struct megasas_instance *instance,
1590 struct scsi_cmnd *scmd)
1591 {
1592 struct megasas_cmd *cmd;
1593 u32 frame_count;
1594
1595 cmd = megasas_get_cmd(instance);
1596 if (!cmd)
1597 return SCSI_MLQUEUE_HOST_BUSY;
1598
1599 /*
1600 * Logical drive command
1601 */
1602 if (megasas_cmd_type(scmd) == READ_WRITE_LDIO)
1603 frame_count = megasas_build_ldio(instance, scmd, cmd);
1604 else
1605 frame_count = megasas_build_dcdb(instance, scmd, cmd);
1606
1607 if (!frame_count)
1608 goto out_return_cmd;
1609
1610 cmd->scmd = scmd;
1611 scmd->SCp.ptr = (char *)cmd;
1612
1613 /*
1614 * Issue the command to the FW
1615 */
1616 atomic_inc(&instance->fw_outstanding);
1617
1618 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
1619 cmd->frame_count-1, instance->reg_set);
1620
1621 return 0;
1622 out_return_cmd:
1623 megasas_return_cmd(instance, cmd);
1624 return 1;
1625 }
1626
1627
1628 /**
1629 * megasas_queue_command - Queue entry point
1630 * @scmd: SCSI command to be queued
1631 * @done: Callback entry point
1632 */
1633 static int
1634 megasas_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
1635 {
1636 struct megasas_instance *instance;
1637 unsigned long flags;
1638
1639 instance = (struct megasas_instance *)
1640 scmd->device->host->hostdata;
1641
1642 if (instance->unload == 1) {
1643 scmd->result = DID_NO_CONNECT << 16;
1644 scmd->scsi_done(scmd);
1645 return 0;
1646 }
1647
1648 if (instance->issuepend_done == 0)
1649 return SCSI_MLQUEUE_HOST_BUSY;
1650
1651 spin_lock_irqsave(&instance->hba_lock, flags);
1652
1653 /* Check for an mpio path and adjust behavior */
1654 if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) {
1655 if (megasas_check_mpio_paths(instance, scmd) ==
1656 (DID_RESET << 16)) {
1657 spin_unlock_irqrestore(&instance->hba_lock, flags);
1658 return SCSI_MLQUEUE_HOST_BUSY;
1659 } else {
1660 spin_unlock_irqrestore(&instance->hba_lock, flags);
1661 scmd->result = DID_NO_CONNECT << 16;
1662 scmd->scsi_done(scmd);
1663 return 0;
1664 }
1665 }
1666
1667 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
1668 spin_unlock_irqrestore(&instance->hba_lock, flags);
1669 scmd->result = DID_NO_CONNECT << 16;
1670 scmd->scsi_done(scmd);
1671 return 0;
1672 }
1673
1674 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
1675 spin_unlock_irqrestore(&instance->hba_lock, flags);
1676 return SCSI_MLQUEUE_HOST_BUSY;
1677 }
1678
1679 spin_unlock_irqrestore(&instance->hba_lock, flags);
1680
1681 scmd->result = 0;
1682
1683 if (MEGASAS_IS_LOGICAL(scmd) &&
1684 (scmd->device->id >= instance->fw_supported_vd_count ||
1685 scmd->device->lun)) {
1686 scmd->result = DID_BAD_TARGET << 16;
1687 goto out_done;
1688 }
1689
1690 switch (scmd->cmnd[0]) {
1691 case SYNCHRONIZE_CACHE:
1692 /*
1693 * FW takes care of flush cache on its own
1694 * No need to send it down
1695 */
1696 scmd->result = DID_OK << 16;
1697 goto out_done;
1698 default:
1699 break;
1700 }
1701
1702 if (instance->instancet->build_and_issue_cmd(instance, scmd)) {
1703 dev_err(&instance->pdev->dev, "Err returned from build_and_issue_cmd\n");
1704 return SCSI_MLQUEUE_HOST_BUSY;
1705 }
1706
1707 return 0;
1708
1709 out_done:
1710 scmd->scsi_done(scmd);
1711 return 0;
1712 }
1713
1714 static struct megasas_instance *megasas_lookup_instance(u16 host_no)
1715 {
1716 int i;
1717
1718 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
1719
1720 if ((megasas_mgmt_info.instance[i]) &&
1721 (megasas_mgmt_info.instance[i]->host->host_no == host_no))
1722 return megasas_mgmt_info.instance[i];
1723 }
1724
1725 return NULL;
1726 }
1727
1728 /*
1729 * megasas_set_dma_alignment - Set DMA alignment for PI enabled VD
1730 *
1731 * @sdev: OS provided scsi device
1732 *
1733 * Returns void
1734 */
1735 static void megasas_set_dma_alignment(struct scsi_device *sdev)
1736 {
1737 u32 device_id, ld;
1738 struct megasas_instance *instance;
1739 struct fusion_context *fusion;
1740 struct MR_LD_RAID *raid;
1741 struct MR_DRV_RAID_MAP_ALL *local_map_ptr;
1742
1743 instance = megasas_lookup_instance(sdev->host->host_no);
1744 fusion = instance->ctrl_context;
1745
1746 if (!fusion)
1747 return;
1748
1749 if (sdev->channel >= MEGASAS_MAX_PD_CHANNELS) {
1750 device_id = ((sdev->channel % 2) * MEGASAS_MAX_DEV_PER_CHANNEL)
1751 + sdev->id;
1752 local_map_ptr = fusion->ld_drv_map[(instance->map_id & 1)];
1753 ld = MR_TargetIdToLdGet(device_id, local_map_ptr);
1754 raid = MR_LdRaidGet(ld, local_map_ptr);
1755
1756 if (raid->capability.ldPiMode == MR_PROT_INFO_TYPE_CONTROLLER)
1757 blk_queue_update_dma_alignment(sdev->request_queue, 0x7);
1758 }
1759 }
1760
1761 static int megasas_slave_configure(struct scsi_device *sdev)
1762 {
1763 u16 pd_index = 0;
1764 struct megasas_instance *instance;
1765
1766 instance = megasas_lookup_instance(sdev->host->host_no);
1767 if (instance->allow_fw_scan) {
1768 if (sdev->channel < MEGASAS_MAX_PD_CHANNELS &&
1769 sdev->type == TYPE_DISK) {
1770 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1771 sdev->id;
1772 if (instance->pd_list[pd_index].driveState !=
1773 MR_PD_STATE_SYSTEM)
1774 return -ENXIO;
1775 }
1776 }
1777 megasas_set_dma_alignment(sdev);
1778 /*
1779 * The RAID firmware may require extended timeouts.
1780 */
1781 blk_queue_rq_timeout(sdev->request_queue,
1782 MEGASAS_DEFAULT_CMD_TIMEOUT * HZ);
1783
1784 return 0;
1785 }
1786
1787 static int megasas_slave_alloc(struct scsi_device *sdev)
1788 {
1789 u16 pd_index = 0;
1790 struct megasas_instance *instance ;
1791
1792 instance = megasas_lookup_instance(sdev->host->host_no);
1793 if (sdev->channel < MEGASAS_MAX_PD_CHANNELS) {
1794 /*
1795 * Open the OS scan to the SYSTEM PD
1796 */
1797 pd_index =
1798 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1799 sdev->id;
1800 if ((instance->allow_fw_scan || instance->pd_list[pd_index].driveState ==
1801 MR_PD_STATE_SYSTEM)) {
1802 return 0;
1803 }
1804 return -ENXIO;
1805 }
1806 return 0;
1807 }
1808
1809 /*
1810 * megasas_complete_outstanding_ioctls - Complete outstanding ioctls after a
1811 * kill adapter
1812 * @instance: Adapter soft state
1813 *
1814 */
1815 static void megasas_complete_outstanding_ioctls(struct megasas_instance *instance)
1816 {
1817 int i;
1818 struct megasas_cmd *cmd_mfi;
1819 struct megasas_cmd_fusion *cmd_fusion;
1820 struct fusion_context *fusion = instance->ctrl_context;
1821
1822 /* Find all outstanding ioctls */
1823 if (fusion) {
1824 for (i = 0; i < instance->max_fw_cmds; i++) {
1825 cmd_fusion = fusion->cmd_list[i];
1826 if (cmd_fusion->sync_cmd_idx != (u32)ULONG_MAX) {
1827 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
1828 if (cmd_mfi->sync_cmd &&
1829 cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT)
1830 megasas_complete_cmd(instance,
1831 cmd_mfi, DID_OK);
1832 }
1833 }
1834 } else {
1835 for (i = 0; i < instance->max_fw_cmds; i++) {
1836 cmd_mfi = instance->cmd_list[i];
1837 if (cmd_mfi->sync_cmd && cmd_mfi->frame->hdr.cmd !=
1838 MFI_CMD_ABORT)
1839 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
1840 }
1841 }
1842 }
1843
1844
1845 void megaraid_sas_kill_hba(struct megasas_instance *instance)
1846 {
1847 /* Set critical error to block I/O & ioctls in case caller didn't */
1848 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
1849 /* Wait 1 second to ensure IO or ioctls in build have posted */
1850 msleep(1000);
1851 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
1852 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
1853 (instance->ctrl_context)) {
1854 writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
1855 /* Flush */
1856 readl(&instance->reg_set->doorbell);
1857 if (instance->mpio && instance->requestorId)
1858 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
1859 } else {
1860 writel(MFI_STOP_ADP,
1861 &instance->reg_set->inbound_doorbell);
1862 }
1863 /* Complete outstanding ioctls when adapter is killed */
1864 megasas_complete_outstanding_ioctls(instance);
1865 }
1866
1867 /**
1868 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
1869 * restored to max value
1870 * @instance: Adapter soft state
1871 *
1872 */
1873 void
1874 megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
1875 {
1876 unsigned long flags;
1877
1878 if (instance->flag & MEGASAS_FW_BUSY
1879 && time_after(jiffies, instance->last_time + 5 * HZ)
1880 && atomic_read(&instance->fw_outstanding) <
1881 instance->throttlequeuedepth + 1) {
1882
1883 spin_lock_irqsave(instance->host->host_lock, flags);
1884 instance->flag &= ~MEGASAS_FW_BUSY;
1885
1886 instance->host->can_queue = instance->max_scsi_cmds;
1887 spin_unlock_irqrestore(instance->host->host_lock, flags);
1888 }
1889 }
1890
1891 /**
1892 * megasas_complete_cmd_dpc - Returns FW's controller structure
1893 * @instance_addr: Address of adapter soft state
1894 *
1895 * Tasklet to complete cmds
1896 */
1897 static void megasas_complete_cmd_dpc(unsigned long instance_addr)
1898 {
1899 u32 producer;
1900 u32 consumer;
1901 u32 context;
1902 struct megasas_cmd *cmd;
1903 struct megasas_instance *instance =
1904 (struct megasas_instance *)instance_addr;
1905 unsigned long flags;
1906
1907 /* If we have already declared adapter dead, donot complete cmds */
1908 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
1909 return;
1910
1911 spin_lock_irqsave(&instance->completion_lock, flags);
1912
1913 producer = le32_to_cpu(*instance->producer);
1914 consumer = le32_to_cpu(*instance->consumer);
1915
1916 while (consumer != producer) {
1917 context = le32_to_cpu(instance->reply_queue[consumer]);
1918 if (context >= instance->max_fw_cmds) {
1919 dev_err(&instance->pdev->dev, "Unexpected context value %x\n",
1920 context);
1921 BUG();
1922 }
1923
1924 cmd = instance->cmd_list[context];
1925
1926 megasas_complete_cmd(instance, cmd, DID_OK);
1927
1928 consumer++;
1929 if (consumer == (instance->max_fw_cmds + 1)) {
1930 consumer = 0;
1931 }
1932 }
1933
1934 *instance->consumer = cpu_to_le32(producer);
1935
1936 spin_unlock_irqrestore(&instance->completion_lock, flags);
1937
1938 /*
1939 * Check if we can restore can_queue
1940 */
1941 megasas_check_and_restore_queue_depth(instance);
1942 }
1943
1944 /**
1945 * megasas_start_timer - Initializes a timer object
1946 * @instance: Adapter soft state
1947 * @timer: timer object to be initialized
1948 * @fn: timer function
1949 * @interval: time interval between timer function call
1950 *
1951 */
1952 void megasas_start_timer(struct megasas_instance *instance,
1953 struct timer_list *timer,
1954 void *fn, unsigned long interval)
1955 {
1956 init_timer(timer);
1957 timer->expires = jiffies + interval;
1958 timer->data = (unsigned long)instance;
1959 timer->function = fn;
1960 add_timer(timer);
1961 }
1962
1963 static void
1964 megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
1965
1966 static void
1967 process_fw_state_change_wq(struct work_struct *work);
1968
1969 void megasas_do_ocr(struct megasas_instance *instance)
1970 {
1971 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
1972 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
1973 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
1974 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
1975 }
1976 instance->instancet->disable_intr(instance);
1977 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
1978 instance->issuepend_done = 0;
1979
1980 atomic_set(&instance->fw_outstanding, 0);
1981 megasas_internal_reset_defer_cmds(instance);
1982 process_fw_state_change_wq(&instance->work_init);
1983 }
1984
1985 static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance,
1986 int initial)
1987 {
1988 struct megasas_cmd *cmd;
1989 struct megasas_dcmd_frame *dcmd;
1990 struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL;
1991 dma_addr_t new_affiliation_111_h;
1992 int ld, retval = 0;
1993 u8 thisVf;
1994
1995 cmd = megasas_get_cmd(instance);
1996
1997 if (!cmd) {
1998 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation_111:"
1999 "Failed to get cmd for scsi%d\n",
2000 instance->host->host_no);
2001 return -ENOMEM;
2002 }
2003
2004 dcmd = &cmd->frame->dcmd;
2005
2006 if (!instance->vf_affiliation_111) {
2007 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2008 "affiliation for scsi%d\n", instance->host->host_no);
2009 megasas_return_cmd(instance, cmd);
2010 return -ENOMEM;
2011 }
2012
2013 if (initial)
2014 memset(instance->vf_affiliation_111, 0,
2015 sizeof(struct MR_LD_VF_AFFILIATION_111));
2016 else {
2017 new_affiliation_111 =
2018 pci_alloc_consistent(instance->pdev,
2019 sizeof(struct MR_LD_VF_AFFILIATION_111),
2020 &new_affiliation_111_h);
2021 if (!new_affiliation_111) {
2022 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2023 "memory for new affiliation for scsi%d\n",
2024 instance->host->host_no);
2025 megasas_return_cmd(instance, cmd);
2026 return -ENOMEM;
2027 }
2028 memset(new_affiliation_111, 0,
2029 sizeof(struct MR_LD_VF_AFFILIATION_111));
2030 }
2031
2032 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2033
2034 dcmd->cmd = MFI_CMD_DCMD;
2035 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2036 dcmd->sge_count = 1;
2037 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2038 dcmd->timeout = 0;
2039 dcmd->pad_0 = 0;
2040 dcmd->data_xfer_len =
2041 cpu_to_le32(sizeof(struct MR_LD_VF_AFFILIATION_111));
2042 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111);
2043
2044 if (initial)
2045 dcmd->sgl.sge32[0].phys_addr =
2046 cpu_to_le32(instance->vf_affiliation_111_h);
2047 else
2048 dcmd->sgl.sge32[0].phys_addr =
2049 cpu_to_le32(new_affiliation_111_h);
2050
2051 dcmd->sgl.sge32[0].length = cpu_to_le32(
2052 sizeof(struct MR_LD_VF_AFFILIATION_111));
2053
2054 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2055 "scsi%d\n", instance->host->host_no);
2056
2057 megasas_issue_blocked_cmd(instance, cmd, 0);
2058
2059 if (dcmd->cmd_status) {
2060 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2061 " failed with status 0x%x for scsi%d\n",
2062 dcmd->cmd_status, instance->host->host_no);
2063 retval = 1; /* Do a scan if we couldn't get affiliation */
2064 goto out;
2065 }
2066
2067 if (!initial) {
2068 thisVf = new_affiliation_111->thisVf;
2069 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++)
2070 if (instance->vf_affiliation_111->map[ld].policy[thisVf] !=
2071 new_affiliation_111->map[ld].policy[thisVf]) {
2072 dev_warn(&instance->pdev->dev, "SR-IOV: "
2073 "Got new LD/VF affiliation for scsi%d\n",
2074 instance->host->host_no);
2075 memcpy(instance->vf_affiliation_111,
2076 new_affiliation_111,
2077 sizeof(struct MR_LD_VF_AFFILIATION_111));
2078 retval = 1;
2079 goto out;
2080 }
2081 }
2082 out:
2083 if (new_affiliation_111) {
2084 pci_free_consistent(instance->pdev,
2085 sizeof(struct MR_LD_VF_AFFILIATION_111),
2086 new_affiliation_111,
2087 new_affiliation_111_h);
2088 }
2089
2090 megasas_return_cmd(instance, cmd);
2091
2092 return retval;
2093 }
2094
2095 static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance,
2096 int initial)
2097 {
2098 struct megasas_cmd *cmd;
2099 struct megasas_dcmd_frame *dcmd;
2100 struct MR_LD_VF_AFFILIATION *new_affiliation = NULL;
2101 struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL;
2102 dma_addr_t new_affiliation_h;
2103 int i, j, retval = 0, found = 0, doscan = 0;
2104 u8 thisVf;
2105
2106 cmd = megasas_get_cmd(instance);
2107
2108 if (!cmd) {
2109 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_vf_affiliation12: "
2110 "Failed to get cmd for scsi%d\n",
2111 instance->host->host_no);
2112 return -ENOMEM;
2113 }
2114
2115 dcmd = &cmd->frame->dcmd;
2116
2117 if (!instance->vf_affiliation) {
2118 dev_warn(&instance->pdev->dev, "SR-IOV: Couldn't get LD/VF "
2119 "affiliation for scsi%d\n", instance->host->host_no);
2120 megasas_return_cmd(instance, cmd);
2121 return -ENOMEM;
2122 }
2123
2124 if (initial)
2125 memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
2126 sizeof(struct MR_LD_VF_AFFILIATION));
2127 else {
2128 new_affiliation =
2129 pci_alloc_consistent(instance->pdev,
2130 (MAX_LOGICAL_DRIVES + 1) *
2131 sizeof(struct MR_LD_VF_AFFILIATION),
2132 &new_affiliation_h);
2133 if (!new_affiliation) {
2134 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate "
2135 "memory for new affiliation for scsi%d\n",
2136 instance->host->host_no);
2137 megasas_return_cmd(instance, cmd);
2138 return -ENOMEM;
2139 }
2140 memset(new_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
2141 sizeof(struct MR_LD_VF_AFFILIATION));
2142 }
2143
2144 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2145
2146 dcmd->cmd = MFI_CMD_DCMD;
2147 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2148 dcmd->sge_count = 1;
2149 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2150 dcmd->timeout = 0;
2151 dcmd->pad_0 = 0;
2152 dcmd->data_xfer_len = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2153 sizeof(struct MR_LD_VF_AFFILIATION));
2154 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS);
2155
2156 if (initial)
2157 dcmd->sgl.sge32[0].phys_addr =
2158 cpu_to_le32(instance->vf_affiliation_h);
2159 else
2160 dcmd->sgl.sge32[0].phys_addr =
2161 cpu_to_le32(new_affiliation_h);
2162
2163 dcmd->sgl.sge32[0].length = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2164 sizeof(struct MR_LD_VF_AFFILIATION));
2165
2166 dev_warn(&instance->pdev->dev, "SR-IOV: Getting LD/VF affiliation for "
2167 "scsi%d\n", instance->host->host_no);
2168
2169 megasas_issue_blocked_cmd(instance, cmd, 0);
2170
2171 if (dcmd->cmd_status) {
2172 dev_warn(&instance->pdev->dev, "SR-IOV: LD/VF affiliation DCMD"
2173 " failed with status 0x%x for scsi%d\n",
2174 dcmd->cmd_status, instance->host->host_no);
2175 retval = 1; /* Do a scan if we couldn't get affiliation */
2176 goto out;
2177 }
2178
2179 if (!initial) {
2180 if (!new_affiliation->ldCount) {
2181 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2182 "affiliation for passive path for scsi%d\n",
2183 instance->host->host_no);
2184 retval = 1;
2185 goto out;
2186 }
2187 newmap = new_affiliation->map;
2188 savedmap = instance->vf_affiliation->map;
2189 thisVf = new_affiliation->thisVf;
2190 for (i = 0 ; i < new_affiliation->ldCount; i++) {
2191 found = 0;
2192 for (j = 0; j < instance->vf_affiliation->ldCount;
2193 j++) {
2194 if (newmap->ref.targetId ==
2195 savedmap->ref.targetId) {
2196 found = 1;
2197 if (newmap->policy[thisVf] !=
2198 savedmap->policy[thisVf]) {
2199 doscan = 1;
2200 goto out;
2201 }
2202 }
2203 savedmap = (struct MR_LD_VF_MAP *)
2204 ((unsigned char *)savedmap +
2205 savedmap->size);
2206 }
2207 if (!found && newmap->policy[thisVf] !=
2208 MR_LD_ACCESS_HIDDEN) {
2209 doscan = 1;
2210 goto out;
2211 }
2212 newmap = (struct MR_LD_VF_MAP *)
2213 ((unsigned char *)newmap + newmap->size);
2214 }
2215
2216 newmap = new_affiliation->map;
2217 savedmap = instance->vf_affiliation->map;
2218
2219 for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) {
2220 found = 0;
2221 for (j = 0 ; j < new_affiliation->ldCount; j++) {
2222 if (savedmap->ref.targetId ==
2223 newmap->ref.targetId) {
2224 found = 1;
2225 if (savedmap->policy[thisVf] !=
2226 newmap->policy[thisVf]) {
2227 doscan = 1;
2228 goto out;
2229 }
2230 }
2231 newmap = (struct MR_LD_VF_MAP *)
2232 ((unsigned char *)newmap +
2233 newmap->size);
2234 }
2235 if (!found && savedmap->policy[thisVf] !=
2236 MR_LD_ACCESS_HIDDEN) {
2237 doscan = 1;
2238 goto out;
2239 }
2240 savedmap = (struct MR_LD_VF_MAP *)
2241 ((unsigned char *)savedmap +
2242 savedmap->size);
2243 }
2244 }
2245 out:
2246 if (doscan) {
2247 dev_warn(&instance->pdev->dev, "SR-IOV: Got new LD/VF "
2248 "affiliation for scsi%d\n", instance->host->host_no);
2249 memcpy(instance->vf_affiliation, new_affiliation,
2250 new_affiliation->size);
2251 retval = 1;
2252 }
2253
2254 if (new_affiliation)
2255 pci_free_consistent(instance->pdev,
2256 (MAX_LOGICAL_DRIVES + 1) *
2257 sizeof(struct MR_LD_VF_AFFILIATION),
2258 new_affiliation, new_affiliation_h);
2259 megasas_return_cmd(instance, cmd);
2260
2261 return retval;
2262 }
2263
2264 /* This function will get the current SR-IOV LD/VF affiliation */
2265 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
2266 int initial)
2267 {
2268 int retval;
2269
2270 if (instance->PlasmaFW111)
2271 retval = megasas_get_ld_vf_affiliation_111(instance, initial);
2272 else
2273 retval = megasas_get_ld_vf_affiliation_12(instance, initial);
2274 return retval;
2275 }
2276
2277 /* This function will tell FW to start the SR-IOV heartbeat */
2278 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
2279 int initial)
2280 {
2281 struct megasas_cmd *cmd;
2282 struct megasas_dcmd_frame *dcmd;
2283 int retval = 0;
2284
2285 cmd = megasas_get_cmd(instance);
2286
2287 if (!cmd) {
2288 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_sriov_start_heartbeat: "
2289 "Failed to get cmd for scsi%d\n",
2290 instance->host->host_no);
2291 return -ENOMEM;
2292 }
2293
2294 dcmd = &cmd->frame->dcmd;
2295
2296 if (initial) {
2297 instance->hb_host_mem =
2298 pci_zalloc_consistent(instance->pdev,
2299 sizeof(struct MR_CTRL_HB_HOST_MEM),
2300 &instance->hb_host_mem_h);
2301 if (!instance->hb_host_mem) {
2302 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SR-IOV: Couldn't allocate"
2303 " memory for heartbeat host memory for scsi%d\n",
2304 instance->host->host_no);
2305 retval = -ENOMEM;
2306 goto out;
2307 }
2308 }
2309
2310 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2311
2312 dcmd->mbox.s[0] = cpu_to_le16(sizeof(struct MR_CTRL_HB_HOST_MEM));
2313 dcmd->cmd = MFI_CMD_DCMD;
2314 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2315 dcmd->sge_count = 1;
2316 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2317 dcmd->timeout = 0;
2318 dcmd->pad_0 = 0;
2319 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM));
2320 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC);
2321 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->hb_host_mem_h);
2322 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM));
2323
2324 dev_warn(&instance->pdev->dev, "SR-IOV: Starting heartbeat for scsi%d\n",
2325 instance->host->host_no);
2326
2327 if (instance->ctrl_context && !instance->mask_interrupts)
2328 retval = megasas_issue_blocked_cmd(instance, cmd,
2329 MEGASAS_ROUTINE_WAIT_TIME_VF);
2330 else
2331 retval = megasas_issue_polled(instance, cmd);
2332
2333 if (retval) {
2334 dev_warn(&instance->pdev->dev, "SR-IOV: MR_DCMD_CTRL_SHARED_HOST"
2335 "_MEM_ALLOC DCMD %s for scsi%d\n",
2336 (dcmd->cmd_status == MFI_STAT_INVALID_STATUS) ?
2337 "timed out" : "failed", instance->host->host_no);
2338 retval = 1;
2339 }
2340
2341 out:
2342 megasas_return_cmd(instance, cmd);
2343
2344 return retval;
2345 }
2346
2347 /* Handler for SR-IOV heartbeat */
2348 void megasas_sriov_heartbeat_handler(unsigned long instance_addr)
2349 {
2350 struct megasas_instance *instance =
2351 (struct megasas_instance *)instance_addr;
2352
2353 if (instance->hb_host_mem->HB.fwCounter !=
2354 instance->hb_host_mem->HB.driverCounter) {
2355 instance->hb_host_mem->HB.driverCounter =
2356 instance->hb_host_mem->HB.fwCounter;
2357 mod_timer(&instance->sriov_heartbeat_timer,
2358 jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
2359 } else {
2360 dev_warn(&instance->pdev->dev, "SR-IOV: Heartbeat never "
2361 "completed for scsi%d\n", instance->host->host_no);
2362 schedule_work(&instance->work_init);
2363 }
2364 }
2365
2366 /**
2367 * megasas_wait_for_outstanding - Wait for all outstanding cmds
2368 * @instance: Adapter soft state
2369 *
2370 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
2371 * complete all its outstanding commands. Returns error if one or more IOs
2372 * are pending after this time period. It also marks the controller dead.
2373 */
2374 static int megasas_wait_for_outstanding(struct megasas_instance *instance)
2375 {
2376 int i;
2377 u32 reset_index;
2378 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
2379 u8 adprecovery;
2380 unsigned long flags;
2381 struct list_head clist_local;
2382 struct megasas_cmd *reset_cmd;
2383 u32 fw_state;
2384 u8 kill_adapter_flag;
2385
2386 spin_lock_irqsave(&instance->hba_lock, flags);
2387 adprecovery = instance->adprecovery;
2388 spin_unlock_irqrestore(&instance->hba_lock, flags);
2389
2390 if (adprecovery != MEGASAS_HBA_OPERATIONAL) {
2391
2392 INIT_LIST_HEAD(&clist_local);
2393 spin_lock_irqsave(&instance->hba_lock, flags);
2394 list_splice_init(&instance->internal_reset_pending_q,
2395 &clist_local);
2396 spin_unlock_irqrestore(&instance->hba_lock, flags);
2397
2398 dev_notice(&instance->pdev->dev, "HBA reset wait ...\n");
2399 for (i = 0; i < wait_time; i++) {
2400 msleep(1000);
2401 spin_lock_irqsave(&instance->hba_lock, flags);
2402 adprecovery = instance->adprecovery;
2403 spin_unlock_irqrestore(&instance->hba_lock, flags);
2404 if (adprecovery == MEGASAS_HBA_OPERATIONAL)
2405 break;
2406 }
2407
2408 if (adprecovery != MEGASAS_HBA_OPERATIONAL) {
2409 dev_notice(&instance->pdev->dev, "reset: Stopping HBA.\n");
2410 spin_lock_irqsave(&instance->hba_lock, flags);
2411 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
2412 spin_unlock_irqrestore(&instance->hba_lock, flags);
2413 return FAILED;
2414 }
2415
2416 reset_index = 0;
2417 while (!list_empty(&clist_local)) {
2418 reset_cmd = list_entry((&clist_local)->next,
2419 struct megasas_cmd, list);
2420 list_del_init(&reset_cmd->list);
2421 if (reset_cmd->scmd) {
2422 reset_cmd->scmd->result = DID_RESET << 16;
2423 dev_notice(&instance->pdev->dev, "%d:%p reset [%02x]\n",
2424 reset_index, reset_cmd,
2425 reset_cmd->scmd->cmnd[0]);
2426
2427 reset_cmd->scmd->scsi_done(reset_cmd->scmd);
2428 megasas_return_cmd(instance, reset_cmd);
2429 } else if (reset_cmd->sync_cmd) {
2430 dev_notice(&instance->pdev->dev, "%p synch cmds"
2431 "reset queue\n",
2432 reset_cmd);
2433
2434 reset_cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
2435 instance->instancet->fire_cmd(instance,
2436 reset_cmd->frame_phys_addr,
2437 0, instance->reg_set);
2438 } else {
2439 dev_notice(&instance->pdev->dev, "%p unexpected"
2440 "cmds lst\n",
2441 reset_cmd);
2442 }
2443 reset_index++;
2444 }
2445
2446 return SUCCESS;
2447 }
2448
2449 for (i = 0; i < resetwaittime; i++) {
2450 int outstanding = atomic_read(&instance->fw_outstanding);
2451
2452 if (!outstanding)
2453 break;
2454
2455 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2456 dev_notice(&instance->pdev->dev, "[%2d]waiting for %d "
2457 "commands to complete\n",i,outstanding);
2458 /*
2459 * Call cmd completion routine. Cmd to be
2460 * be completed directly without depending on isr.
2461 */
2462 megasas_complete_cmd_dpc((unsigned long)instance);
2463 }
2464
2465 msleep(1000);
2466 }
2467
2468 i = 0;
2469 kill_adapter_flag = 0;
2470 do {
2471 fw_state = instance->instancet->read_fw_status_reg(
2472 instance->reg_set) & MFI_STATE_MASK;
2473 if ((fw_state == MFI_STATE_FAULT) &&
2474 (instance->disableOnlineCtrlReset == 0)) {
2475 if (i == 3) {
2476 kill_adapter_flag = 2;
2477 break;
2478 }
2479 megasas_do_ocr(instance);
2480 kill_adapter_flag = 1;
2481
2482 /* wait for 1 secs to let FW finish the pending cmds */
2483 msleep(1000);
2484 }
2485 i++;
2486 } while (i <= 3);
2487
2488 if (atomic_read(&instance->fw_outstanding) && !kill_adapter_flag) {
2489 if (instance->disableOnlineCtrlReset == 0) {
2490 megasas_do_ocr(instance);
2491
2492 /* wait for 5 secs to let FW finish the pending cmds */
2493 for (i = 0; i < wait_time; i++) {
2494 int outstanding =
2495 atomic_read(&instance->fw_outstanding);
2496 if (!outstanding)
2497 return SUCCESS;
2498 msleep(1000);
2499 }
2500 }
2501 }
2502
2503 if (atomic_read(&instance->fw_outstanding) ||
2504 (kill_adapter_flag == 2)) {
2505 dev_notice(&instance->pdev->dev, "pending cmds after reset\n");
2506 /*
2507 * Send signal to FW to stop processing any pending cmds.
2508 * The controller will be taken offline by the OS now.
2509 */
2510 if ((instance->pdev->device ==
2511 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2512 (instance->pdev->device ==
2513 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
2514 writel(MFI_STOP_ADP,
2515 &instance->reg_set->doorbell);
2516 } else {
2517 writel(MFI_STOP_ADP,
2518 &instance->reg_set->inbound_doorbell);
2519 }
2520 megasas_dump_pending_frames(instance);
2521 spin_lock_irqsave(&instance->hba_lock, flags);
2522 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
2523 spin_unlock_irqrestore(&instance->hba_lock, flags);
2524 return FAILED;
2525 }
2526
2527 dev_notice(&instance->pdev->dev, "no pending cmds after reset\n");
2528
2529 return SUCCESS;
2530 }
2531
2532 /**
2533 * megasas_generic_reset - Generic reset routine
2534 * @scmd: Mid-layer SCSI command
2535 *
2536 * This routine implements a generic reset handler for device, bus and host
2537 * reset requests. Device, bus and host specific reset handlers can use this
2538 * function after they do their specific tasks.
2539 */
2540 static int megasas_generic_reset(struct scsi_cmnd *scmd)
2541 {
2542 int ret_val;
2543 struct megasas_instance *instance;
2544
2545 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2546
2547 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
2548 scmd->cmnd[0], scmd->retries);
2549
2550 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
2551 dev_err(&instance->pdev->dev, "cannot recover from previous reset failures\n");
2552 return FAILED;
2553 }
2554
2555 ret_val = megasas_wait_for_outstanding(instance);
2556 if (ret_val == SUCCESS)
2557 dev_notice(&instance->pdev->dev, "reset successful\n");
2558 else
2559 dev_err(&instance->pdev->dev, "failed to do reset\n");
2560
2561 return ret_val;
2562 }
2563
2564 /**
2565 * megasas_reset_timer - quiesce the adapter if required
2566 * @scmd: scsi cmnd
2567 *
2568 * Sets the FW busy flag and reduces the host->can_queue if the
2569 * cmd has not been completed within the timeout period.
2570 */
2571 static enum
2572 blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
2573 {
2574 struct megasas_instance *instance;
2575 unsigned long flags;
2576
2577 if (time_after(jiffies, scmd->jiffies_at_alloc +
2578 (MEGASAS_DEFAULT_CMD_TIMEOUT * 2) * HZ)) {
2579 return BLK_EH_NOT_HANDLED;
2580 }
2581
2582 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2583 if (!(instance->flag & MEGASAS_FW_BUSY)) {
2584 /* FW is busy, throttle IO */
2585 spin_lock_irqsave(instance->host->host_lock, flags);
2586
2587 instance->host->can_queue = instance->throttlequeuedepth;
2588 instance->last_time = jiffies;
2589 instance->flag |= MEGASAS_FW_BUSY;
2590
2591 spin_unlock_irqrestore(instance->host->host_lock, flags);
2592 }
2593 return BLK_EH_RESET_TIMER;
2594 }
2595
2596 /**
2597 * megasas_reset_device - Device reset handler entry point
2598 */
2599 static int megasas_reset_device(struct scsi_cmnd *scmd)
2600 {
2601 /*
2602 * First wait for all commands to complete
2603 */
2604 return megasas_generic_reset(scmd);
2605 }
2606
2607 /**
2608 * megasas_reset_bus_host - Bus & host reset handler entry point
2609 */
2610 static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
2611 {
2612 int ret;
2613 struct megasas_instance *instance;
2614
2615 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2616
2617 /*
2618 * First wait for all commands to complete
2619 */
2620 if (instance->ctrl_context)
2621 ret = megasas_reset_fusion(scmd->device->host, 1);
2622 else
2623 ret = megasas_generic_reset(scmd);
2624
2625 return ret;
2626 }
2627
2628 /**
2629 * megasas_bios_param - Returns disk geometry for a disk
2630 * @sdev: device handle
2631 * @bdev: block device
2632 * @capacity: drive capacity
2633 * @geom: geometry parameters
2634 */
2635 static int
2636 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
2637 sector_t capacity, int geom[])
2638 {
2639 int heads;
2640 int sectors;
2641 sector_t cylinders;
2642 unsigned long tmp;
2643
2644 /* Default heads (64) & sectors (32) */
2645 heads = 64;
2646 sectors = 32;
2647
2648 tmp = heads * sectors;
2649 cylinders = capacity;
2650
2651 sector_div(cylinders, tmp);
2652
2653 /*
2654 * Handle extended translation size for logical drives > 1Gb
2655 */
2656
2657 if (capacity >= 0x200000) {
2658 heads = 255;
2659 sectors = 63;
2660 tmp = heads*sectors;
2661 cylinders = capacity;
2662 sector_div(cylinders, tmp);
2663 }
2664
2665 geom[0] = heads;
2666 geom[1] = sectors;
2667 geom[2] = cylinders;
2668
2669 return 0;
2670 }
2671
2672 static void megasas_aen_polling(struct work_struct *work);
2673
2674 /**
2675 * megasas_service_aen - Processes an event notification
2676 * @instance: Adapter soft state
2677 * @cmd: AEN command completed by the ISR
2678 *
2679 * For AEN, driver sends a command down to FW that is held by the FW till an
2680 * event occurs. When an event of interest occurs, FW completes the command
2681 * that it was previously holding.
2682 *
2683 * This routines sends SIGIO signal to processes that have registered with the
2684 * driver for AEN.
2685 */
2686 static void
2687 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
2688 {
2689 unsigned long flags;
2690
2691 /*
2692 * Don't signal app if it is just an aborted previously registered aen
2693 */
2694 if ((!cmd->abort_aen) && (instance->unload == 0)) {
2695 spin_lock_irqsave(&poll_aen_lock, flags);
2696 megasas_poll_wait_aen = 1;
2697 spin_unlock_irqrestore(&poll_aen_lock, flags);
2698 wake_up(&megasas_poll_wait);
2699 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
2700 }
2701 else
2702 cmd->abort_aen = 0;
2703
2704 instance->aen_cmd = NULL;
2705
2706 megasas_return_cmd(instance, cmd);
2707
2708 if ((instance->unload == 0) &&
2709 ((instance->issuepend_done == 1))) {
2710 struct megasas_aen_event *ev;
2711
2712 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
2713 if (!ev) {
2714 dev_err(&instance->pdev->dev, "megasas_service_aen: out of memory\n");
2715 } else {
2716 ev->instance = instance;
2717 instance->ev = ev;
2718 INIT_DELAYED_WORK(&ev->hotplug_work,
2719 megasas_aen_polling);
2720 schedule_delayed_work(&ev->hotplug_work, 0);
2721 }
2722 }
2723 }
2724
2725 static ssize_t
2726 megasas_fw_crash_buffer_store(struct device *cdev,
2727 struct device_attribute *attr, const char *buf, size_t count)
2728 {
2729 struct Scsi_Host *shost = class_to_shost(cdev);
2730 struct megasas_instance *instance =
2731 (struct megasas_instance *) shost->hostdata;
2732 int val = 0;
2733 unsigned long flags;
2734
2735 if (kstrtoint(buf, 0, &val) != 0)
2736 return -EINVAL;
2737
2738 spin_lock_irqsave(&instance->crashdump_lock, flags);
2739 instance->fw_crash_buffer_offset = val;
2740 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2741 return strlen(buf);
2742 }
2743
2744 static ssize_t
2745 megasas_fw_crash_buffer_show(struct device *cdev,
2746 struct device_attribute *attr, char *buf)
2747 {
2748 struct Scsi_Host *shost = class_to_shost(cdev);
2749 struct megasas_instance *instance =
2750 (struct megasas_instance *) shost->hostdata;
2751 u32 size;
2752 unsigned long buff_addr;
2753 unsigned long dmachunk = CRASH_DMA_BUF_SIZE;
2754 unsigned long src_addr;
2755 unsigned long flags;
2756 u32 buff_offset;
2757
2758 spin_lock_irqsave(&instance->crashdump_lock, flags);
2759 buff_offset = instance->fw_crash_buffer_offset;
2760 if (!instance->crash_dump_buf &&
2761 !((instance->fw_crash_state == AVAILABLE) ||
2762 (instance->fw_crash_state == COPYING))) {
2763 dev_err(&instance->pdev->dev,
2764 "Firmware crash dump is not available\n");
2765 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2766 return -EINVAL;
2767 }
2768
2769 buff_addr = (unsigned long) buf;
2770
2771 if (buff_offset > (instance->fw_crash_buffer_size * dmachunk)) {
2772 dev_err(&instance->pdev->dev,
2773 "Firmware crash dump offset is out of range\n");
2774 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2775 return 0;
2776 }
2777
2778 size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset;
2779 size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size;
2780
2781 src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] +
2782 (buff_offset % dmachunk);
2783 memcpy(buf, (void *)src_addr, size);
2784 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2785
2786 return size;
2787 }
2788
2789 static ssize_t
2790 megasas_fw_crash_buffer_size_show(struct device *cdev,
2791 struct device_attribute *attr, char *buf)
2792 {
2793 struct Scsi_Host *shost = class_to_shost(cdev);
2794 struct megasas_instance *instance =
2795 (struct megasas_instance *) shost->hostdata;
2796
2797 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)
2798 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE);
2799 }
2800
2801 static ssize_t
2802 megasas_fw_crash_state_store(struct device *cdev,
2803 struct device_attribute *attr, const char *buf, size_t count)
2804 {
2805 struct Scsi_Host *shost = class_to_shost(cdev);
2806 struct megasas_instance *instance =
2807 (struct megasas_instance *) shost->hostdata;
2808 int val = 0;
2809 unsigned long flags;
2810
2811 if (kstrtoint(buf, 0, &val) != 0)
2812 return -EINVAL;
2813
2814 if ((val <= AVAILABLE || val > COPY_ERROR)) {
2815 dev_err(&instance->pdev->dev, "application updates invalid "
2816 "firmware crash state\n");
2817 return -EINVAL;
2818 }
2819
2820 instance->fw_crash_state = val;
2821
2822 if ((val == COPIED) || (val == COPY_ERROR)) {
2823 spin_lock_irqsave(&instance->crashdump_lock, flags);
2824 megasas_free_host_crash_buffer(instance);
2825 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2826 if (val == COPY_ERROR)
2827 dev_info(&instance->pdev->dev, "application failed to "
2828 "copy Firmware crash dump\n");
2829 else
2830 dev_info(&instance->pdev->dev, "Firmware crash dump "
2831 "copied successfully\n");
2832 }
2833 return strlen(buf);
2834 }
2835
2836 static ssize_t
2837 megasas_fw_crash_state_show(struct device *cdev,
2838 struct device_attribute *attr, char *buf)
2839 {
2840 struct Scsi_Host *shost = class_to_shost(cdev);
2841 struct megasas_instance *instance =
2842 (struct megasas_instance *) shost->hostdata;
2843
2844 return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state);
2845 }
2846
2847 static ssize_t
2848 megasas_page_size_show(struct device *cdev,
2849 struct device_attribute *attr, char *buf)
2850 {
2851 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1);
2852 }
2853
2854 static DEVICE_ATTR(fw_crash_buffer, S_IRUGO | S_IWUSR,
2855 megasas_fw_crash_buffer_show, megasas_fw_crash_buffer_store);
2856 static DEVICE_ATTR(fw_crash_buffer_size, S_IRUGO,
2857 megasas_fw_crash_buffer_size_show, NULL);
2858 static DEVICE_ATTR(fw_crash_state, S_IRUGO | S_IWUSR,
2859 megasas_fw_crash_state_show, megasas_fw_crash_state_store);
2860 static DEVICE_ATTR(page_size, S_IRUGO,
2861 megasas_page_size_show, NULL);
2862
2863 struct device_attribute *megaraid_host_attrs[] = {
2864 &dev_attr_fw_crash_buffer_size,
2865 &dev_attr_fw_crash_buffer,
2866 &dev_attr_fw_crash_state,
2867 &dev_attr_page_size,
2868 NULL,
2869 };
2870
2871 /*
2872 * Scsi host template for megaraid_sas driver
2873 */
2874 static struct scsi_host_template megasas_template = {
2875
2876 .module = THIS_MODULE,
2877 .name = "Avago SAS based MegaRAID driver",
2878 .proc_name = "megaraid_sas",
2879 .slave_configure = megasas_slave_configure,
2880 .slave_alloc = megasas_slave_alloc,
2881 .queuecommand = megasas_queue_command,
2882 .eh_device_reset_handler = megasas_reset_device,
2883 .eh_bus_reset_handler = megasas_reset_bus_host,
2884 .eh_host_reset_handler = megasas_reset_bus_host,
2885 .eh_timed_out = megasas_reset_timer,
2886 .shost_attrs = megaraid_host_attrs,
2887 .bios_param = megasas_bios_param,
2888 .use_clustering = ENABLE_CLUSTERING,
2889 .change_queue_depth = scsi_change_queue_depth,
2890 .no_write_same = 1,
2891 };
2892
2893 /**
2894 * megasas_complete_int_cmd - Completes an internal command
2895 * @instance: Adapter soft state
2896 * @cmd: Command to be completed
2897 *
2898 * The megasas_issue_blocked_cmd() function waits for a command to complete
2899 * after it issues a command. This function wakes up that waiting routine by
2900 * calling wake_up() on the wait queue.
2901 */
2902 static void
2903 megasas_complete_int_cmd(struct megasas_instance *instance,
2904 struct megasas_cmd *cmd)
2905 {
2906 cmd->cmd_status_drv = cmd->frame->io.cmd_status;
2907 wake_up(&instance->int_cmd_wait_q);
2908 }
2909
2910 /**
2911 * megasas_complete_abort - Completes aborting a command
2912 * @instance: Adapter soft state
2913 * @cmd: Cmd that was issued to abort another cmd
2914 *
2915 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
2916 * after it issues an abort on a previously issued command. This function
2917 * wakes up all functions waiting on the same wait queue.
2918 */
2919 static void
2920 megasas_complete_abort(struct megasas_instance *instance,
2921 struct megasas_cmd *cmd)
2922 {
2923 if (cmd->sync_cmd) {
2924 cmd->sync_cmd = 0;
2925 cmd->cmd_status_drv = 0;
2926 wake_up(&instance->abort_cmd_wait_q);
2927 }
2928 }
2929
2930 /**
2931 * megasas_complete_cmd - Completes a command
2932 * @instance: Adapter soft state
2933 * @cmd: Command to be completed
2934 * @alt_status: If non-zero, use this value as status to
2935 * SCSI mid-layer instead of the value returned
2936 * by the FW. This should be used if caller wants
2937 * an alternate status (as in the case of aborted
2938 * commands)
2939 */
2940 void
2941 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
2942 u8 alt_status)
2943 {
2944 int exception = 0;
2945 struct megasas_header *hdr = &cmd->frame->hdr;
2946 unsigned long flags;
2947 struct fusion_context *fusion = instance->ctrl_context;
2948 u32 opcode, status;
2949
2950 /* flag for the retry reset */
2951 cmd->retry_for_fw_reset = 0;
2952
2953 if (cmd->scmd)
2954 cmd->scmd->SCp.ptr = NULL;
2955
2956 switch (hdr->cmd) {
2957 case MFI_CMD_INVALID:
2958 /* Some older 1068 controller FW may keep a pended
2959 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
2960 when booting the kdump kernel. Ignore this command to
2961 prevent a kernel panic on shutdown of the kdump kernel. */
2962 dev_warn(&instance->pdev->dev, "MFI_CMD_INVALID command "
2963 "completed\n");
2964 dev_warn(&instance->pdev->dev, "If you have a controller "
2965 "other than PERC5, please upgrade your firmware\n");
2966 break;
2967 case MFI_CMD_PD_SCSI_IO:
2968 case MFI_CMD_LD_SCSI_IO:
2969
2970 /*
2971 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
2972 * issued either through an IO path or an IOCTL path. If it
2973 * was via IOCTL, we will send it to internal completion.
2974 */
2975 if (cmd->sync_cmd) {
2976 cmd->sync_cmd = 0;
2977 megasas_complete_int_cmd(instance, cmd);
2978 break;
2979 }
2980
2981 case MFI_CMD_LD_READ:
2982 case MFI_CMD_LD_WRITE:
2983
2984 if (alt_status) {
2985 cmd->scmd->result = alt_status << 16;
2986 exception = 1;
2987 }
2988
2989 if (exception) {
2990
2991 atomic_dec(&instance->fw_outstanding);
2992
2993 scsi_dma_unmap(cmd->scmd);
2994 cmd->scmd->scsi_done(cmd->scmd);
2995 megasas_return_cmd(instance, cmd);
2996
2997 break;
2998 }
2999
3000 switch (hdr->cmd_status) {
3001
3002 case MFI_STAT_OK:
3003 cmd->scmd->result = DID_OK << 16;
3004 break;
3005
3006 case MFI_STAT_SCSI_IO_FAILED:
3007 case MFI_STAT_LD_INIT_IN_PROGRESS:
3008 cmd->scmd->result =
3009 (DID_ERROR << 16) | hdr->scsi_status;
3010 break;
3011
3012 case MFI_STAT_SCSI_DONE_WITH_ERROR:
3013
3014 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
3015
3016 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
3017 memset(cmd->scmd->sense_buffer, 0,
3018 SCSI_SENSE_BUFFERSIZE);
3019 memcpy(cmd->scmd->sense_buffer, cmd->sense,
3020 hdr->sense_len);
3021
3022 cmd->scmd->result |= DRIVER_SENSE << 24;
3023 }
3024
3025 break;
3026
3027 case MFI_STAT_LD_OFFLINE:
3028 case MFI_STAT_DEVICE_NOT_FOUND:
3029 cmd->scmd->result = DID_BAD_TARGET << 16;
3030 break;
3031
3032 default:
3033 dev_printk(KERN_DEBUG, &instance->pdev->dev, "MFI FW status %#x\n",
3034 hdr->cmd_status);
3035 cmd->scmd->result = DID_ERROR << 16;
3036 break;
3037 }
3038
3039 atomic_dec(&instance->fw_outstanding);
3040
3041 scsi_dma_unmap(cmd->scmd);
3042 cmd->scmd->scsi_done(cmd->scmd);
3043 megasas_return_cmd(instance, cmd);
3044
3045 break;
3046
3047 case MFI_CMD_SMP:
3048 case MFI_CMD_STP:
3049 case MFI_CMD_DCMD:
3050 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
3051 /* Check for LD map update */
3052 if ((opcode == MR_DCMD_LD_MAP_GET_INFO)
3053 && (cmd->frame->dcmd.mbox.b[1] == 1)) {
3054 fusion->fast_path_io = 0;
3055 spin_lock_irqsave(instance->host->host_lock, flags);
3056 instance->map_update_cmd = NULL;
3057 if (cmd->frame->hdr.cmd_status != 0) {
3058 if (cmd->frame->hdr.cmd_status !=
3059 MFI_STAT_NOT_FOUND)
3060 dev_warn(&instance->pdev->dev, "map syncfailed, status = 0x%x\n",
3061 cmd->frame->hdr.cmd_status);
3062 else {
3063 megasas_return_cmd(instance, cmd);
3064 spin_unlock_irqrestore(
3065 instance->host->host_lock,
3066 flags);
3067 break;
3068 }
3069 } else
3070 instance->map_id++;
3071 megasas_return_cmd(instance, cmd);
3072
3073 /*
3074 * Set fast path IO to ZERO.
3075 * Validate Map will set proper value.
3076 * Meanwhile all IOs will go as LD IO.
3077 */
3078 if (MR_ValidateMapInfo(instance))
3079 fusion->fast_path_io = 1;
3080 else
3081 fusion->fast_path_io = 0;
3082 megasas_sync_map_info(instance);
3083 spin_unlock_irqrestore(instance->host->host_lock,
3084 flags);
3085 break;
3086 }
3087 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
3088 opcode == MR_DCMD_CTRL_EVENT_GET) {
3089 spin_lock_irqsave(&poll_aen_lock, flags);
3090 megasas_poll_wait_aen = 0;
3091 spin_unlock_irqrestore(&poll_aen_lock, flags);
3092 }
3093
3094 /* FW has an updated PD sequence */
3095 if ((opcode == MR_DCMD_SYSTEM_PD_MAP_GET_INFO) &&
3096 (cmd->frame->dcmd.mbox.b[0] == 1)) {
3097
3098 spin_lock_irqsave(instance->host->host_lock, flags);
3099 status = cmd->frame->hdr.cmd_status;
3100 instance->jbod_seq_cmd = NULL;
3101 megasas_return_cmd(instance, cmd);
3102
3103 if (status == MFI_STAT_OK) {
3104 instance->pd_seq_map_id++;
3105 /* Re-register a pd sync seq num cmd */
3106 if (megasas_sync_pd_seq_num(instance, true))
3107 instance->use_seqnum_jbod_fp = false;
3108 } else
3109 instance->use_seqnum_jbod_fp = false;
3110
3111 spin_unlock_irqrestore(instance->host->host_lock, flags);
3112 break;
3113 }
3114
3115 /*
3116 * See if got an event notification
3117 */
3118 if (opcode == MR_DCMD_CTRL_EVENT_WAIT)
3119 megasas_service_aen(instance, cmd);
3120 else
3121 megasas_complete_int_cmd(instance, cmd);
3122
3123 break;
3124
3125 case MFI_CMD_ABORT:
3126 /*
3127 * Cmd issued to abort another cmd returned
3128 */
3129 megasas_complete_abort(instance, cmd);
3130 break;
3131
3132 default:
3133 dev_info(&instance->pdev->dev, "Unknown command completed! [0x%X]\n",
3134 hdr->cmd);
3135 break;
3136 }
3137 }
3138
3139 /**
3140 * megasas_issue_pending_cmds_again - issue all pending cmds
3141 * in FW again because of the fw reset
3142 * @instance: Adapter soft state
3143 */
3144 static inline void
3145 megasas_issue_pending_cmds_again(struct megasas_instance *instance)
3146 {
3147 struct megasas_cmd *cmd;
3148 struct list_head clist_local;
3149 union megasas_evt_class_locale class_locale;
3150 unsigned long flags;
3151 u32 seq_num;
3152
3153 INIT_LIST_HEAD(&clist_local);
3154 spin_lock_irqsave(&instance->hba_lock, flags);
3155 list_splice_init(&instance->internal_reset_pending_q, &clist_local);
3156 spin_unlock_irqrestore(&instance->hba_lock, flags);
3157
3158 while (!list_empty(&clist_local)) {
3159 cmd = list_entry((&clist_local)->next,
3160 struct megasas_cmd, list);
3161 list_del_init(&cmd->list);
3162
3163 if (cmd->sync_cmd || cmd->scmd) {
3164 dev_notice(&instance->pdev->dev, "command %p, %p:%d"
3165 "detected to be pending while HBA reset\n",
3166 cmd, cmd->scmd, cmd->sync_cmd);
3167
3168 cmd->retry_for_fw_reset++;
3169
3170 if (cmd->retry_for_fw_reset == 3) {
3171 dev_notice(&instance->pdev->dev, "cmd %p, %p:%d"
3172 "was tried multiple times during reset."
3173 "Shutting down the HBA\n",
3174 cmd, cmd->scmd, cmd->sync_cmd);
3175 instance->instancet->disable_intr(instance);
3176 atomic_set(&instance->fw_reset_no_pci_access, 1);
3177 megaraid_sas_kill_hba(instance);
3178 return;
3179 }
3180 }
3181
3182 if (cmd->sync_cmd == 1) {
3183 if (cmd->scmd) {
3184 dev_notice(&instance->pdev->dev, "unexpected"
3185 "cmd attached to internal command!\n");
3186 }
3187 dev_notice(&instance->pdev->dev, "%p synchronous cmd"
3188 "on the internal reset queue,"
3189 "issue it again.\n", cmd);
3190 cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
3191 instance->instancet->fire_cmd(instance,
3192 cmd->frame_phys_addr,
3193 0, instance->reg_set);
3194 } else if (cmd->scmd) {
3195 dev_notice(&instance->pdev->dev, "%p scsi cmd [%02x]"
3196 "detected on the internal queue, issue again.\n",
3197 cmd, cmd->scmd->cmnd[0]);
3198
3199 atomic_inc(&instance->fw_outstanding);
3200 instance->instancet->fire_cmd(instance,
3201 cmd->frame_phys_addr,
3202 cmd->frame_count-1, instance->reg_set);
3203 } else {
3204 dev_notice(&instance->pdev->dev, "%p unexpected cmd on the"
3205 "internal reset defer list while re-issue!!\n",
3206 cmd);
3207 }
3208 }
3209
3210 if (instance->aen_cmd) {
3211 dev_notice(&instance->pdev->dev, "aen_cmd in def process\n");
3212 megasas_return_cmd(instance, instance->aen_cmd);
3213
3214 instance->aen_cmd = NULL;
3215 }
3216
3217 /*
3218 * Initiate AEN (Asynchronous Event Notification)
3219 */
3220 seq_num = instance->last_seq_num;
3221 class_locale.members.reserved = 0;
3222 class_locale.members.locale = MR_EVT_LOCALE_ALL;
3223 class_locale.members.class = MR_EVT_CLASS_DEBUG;
3224
3225 megasas_register_aen(instance, seq_num, class_locale.word);
3226 }
3227
3228 /**
3229 * Move the internal reset pending commands to a deferred queue.
3230 *
3231 * We move the commands pending at internal reset time to a
3232 * pending queue. This queue would be flushed after successful
3233 * completion of the internal reset sequence. if the internal reset
3234 * did not complete in time, the kernel reset handler would flush
3235 * these commands.
3236 **/
3237 static void
3238 megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
3239 {
3240 struct megasas_cmd *cmd;
3241 int i;
3242 u32 max_cmd = instance->max_fw_cmds;
3243 u32 defer_index;
3244 unsigned long flags;
3245
3246 defer_index = 0;
3247 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
3248 for (i = 0; i < max_cmd; i++) {
3249 cmd = instance->cmd_list[i];
3250 if (cmd->sync_cmd == 1 || cmd->scmd) {
3251 dev_notice(&instance->pdev->dev, "moving cmd[%d]:%p:%d:%p"
3252 "on the defer queue as internal\n",
3253 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
3254
3255 if (!list_empty(&cmd->list)) {
3256 dev_notice(&instance->pdev->dev, "ERROR while"
3257 " moving this cmd:%p, %d %p, it was"
3258 "discovered on some list?\n",
3259 cmd, cmd->sync_cmd, cmd->scmd);
3260
3261 list_del_init(&cmd->list);
3262 }
3263 defer_index++;
3264 list_add_tail(&cmd->list,
3265 &instance->internal_reset_pending_q);
3266 }
3267 }
3268 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
3269 }
3270
3271
3272 static void
3273 process_fw_state_change_wq(struct work_struct *work)
3274 {
3275 struct megasas_instance *instance =
3276 container_of(work, struct megasas_instance, work_init);
3277 u32 wait;
3278 unsigned long flags;
3279
3280 if (instance->adprecovery != MEGASAS_ADPRESET_SM_INFAULT) {
3281 dev_notice(&instance->pdev->dev, "error, recovery st %x\n",
3282 instance->adprecovery);
3283 return ;
3284 }
3285
3286 if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) {
3287 dev_notice(&instance->pdev->dev, "FW detected to be in fault"
3288 "state, restarting it...\n");
3289
3290 instance->instancet->disable_intr(instance);
3291 atomic_set(&instance->fw_outstanding, 0);
3292
3293 atomic_set(&instance->fw_reset_no_pci_access, 1);
3294 instance->instancet->adp_reset(instance, instance->reg_set);
3295 atomic_set(&instance->fw_reset_no_pci_access, 0);
3296
3297 dev_notice(&instance->pdev->dev, "FW restarted successfully,"
3298 "initiating next stage...\n");
3299
3300 dev_notice(&instance->pdev->dev, "HBA recovery state machine,"
3301 "state 2 starting...\n");
3302
3303 /* waiting for about 20 second before start the second init */
3304 for (wait = 0; wait < 30; wait++) {
3305 msleep(1000);
3306 }
3307
3308 if (megasas_transition_to_ready(instance, 1)) {
3309 dev_notice(&instance->pdev->dev, "adapter not ready\n");
3310
3311 atomic_set(&instance->fw_reset_no_pci_access, 1);
3312 megaraid_sas_kill_hba(instance);
3313 return ;
3314 }
3315
3316 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
3317 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
3318 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
3319 ) {
3320 *instance->consumer = *instance->producer;
3321 } else {
3322 *instance->consumer = 0;
3323 *instance->producer = 0;
3324 }
3325
3326 megasas_issue_init_mfi(instance);
3327
3328 spin_lock_irqsave(&instance->hba_lock, flags);
3329 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
3330 spin_unlock_irqrestore(&instance->hba_lock, flags);
3331 instance->instancet->enable_intr(instance);
3332
3333 megasas_issue_pending_cmds_again(instance);
3334 instance->issuepend_done = 1;
3335 }
3336 }
3337
3338 /**
3339 * megasas_deplete_reply_queue - Processes all completed commands
3340 * @instance: Adapter soft state
3341 * @alt_status: Alternate status to be returned to
3342 * SCSI mid-layer instead of the status
3343 * returned by the FW
3344 * Note: this must be called with hba lock held
3345 */
3346 static int
3347 megasas_deplete_reply_queue(struct megasas_instance *instance,
3348 u8 alt_status)
3349 {
3350 u32 mfiStatus;
3351 u32 fw_state;
3352
3353 if ((mfiStatus = instance->instancet->check_reset(instance,
3354 instance->reg_set)) == 1) {
3355 return IRQ_HANDLED;
3356 }
3357
3358 if ((mfiStatus = instance->instancet->clear_intr(
3359 instance->reg_set)
3360 ) == 0) {
3361 /* Hardware may not set outbound_intr_status in MSI-X mode */
3362 if (!instance->msix_vectors)
3363 return IRQ_NONE;
3364 }
3365
3366 instance->mfiStatus = mfiStatus;
3367
3368 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
3369 fw_state = instance->instancet->read_fw_status_reg(
3370 instance->reg_set) & MFI_STATE_MASK;
3371
3372 if (fw_state != MFI_STATE_FAULT) {
3373 dev_notice(&instance->pdev->dev, "fw state:%x\n",
3374 fw_state);
3375 }
3376
3377 if ((fw_state == MFI_STATE_FAULT) &&
3378 (instance->disableOnlineCtrlReset == 0)) {
3379 dev_notice(&instance->pdev->dev, "wait adp restart\n");
3380
3381 if ((instance->pdev->device ==
3382 PCI_DEVICE_ID_LSI_SAS1064R) ||
3383 (instance->pdev->device ==
3384 PCI_DEVICE_ID_DELL_PERC5) ||
3385 (instance->pdev->device ==
3386 PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
3387
3388 *instance->consumer =
3389 cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
3390 }
3391
3392
3393 instance->instancet->disable_intr(instance);
3394 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
3395 instance->issuepend_done = 0;
3396
3397 atomic_set(&instance->fw_outstanding, 0);
3398 megasas_internal_reset_defer_cmds(instance);
3399
3400 dev_notice(&instance->pdev->dev, "fwState=%x, stage:%d\n",
3401 fw_state, instance->adprecovery);
3402
3403 schedule_work(&instance->work_init);
3404 return IRQ_HANDLED;
3405
3406 } else {
3407 dev_notice(&instance->pdev->dev, "fwstate:%x, dis_OCR=%x\n",
3408 fw_state, instance->disableOnlineCtrlReset);
3409 }
3410 }
3411
3412 tasklet_schedule(&instance->isr_tasklet);
3413 return IRQ_HANDLED;
3414 }
3415 /**
3416 * megasas_isr - isr entry point
3417 */
3418 static irqreturn_t megasas_isr(int irq, void *devp)
3419 {
3420 struct megasas_irq_context *irq_context = devp;
3421 struct megasas_instance *instance = irq_context->instance;
3422 unsigned long flags;
3423 irqreturn_t rc;
3424
3425 if (atomic_read(&instance->fw_reset_no_pci_access))
3426 return IRQ_HANDLED;
3427
3428 spin_lock_irqsave(&instance->hba_lock, flags);
3429 rc = megasas_deplete_reply_queue(instance, DID_OK);
3430 spin_unlock_irqrestore(&instance->hba_lock, flags);
3431
3432 return rc;
3433 }
3434
3435 /**
3436 * megasas_transition_to_ready - Move the FW to READY state
3437 * @instance: Adapter soft state
3438 *
3439 * During the initialization, FW passes can potentially be in any one of
3440 * several possible states. If the FW in operational, waiting-for-handshake
3441 * states, driver must take steps to bring it to ready state. Otherwise, it
3442 * has to wait for the ready state.
3443 */
3444 int
3445 megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
3446 {
3447 int i;
3448 u8 max_wait;
3449 u32 fw_state;
3450 u32 cur_state;
3451 u32 abs_state, curr_abs_state;
3452
3453 abs_state = instance->instancet->read_fw_status_reg(instance->reg_set);
3454 fw_state = abs_state & MFI_STATE_MASK;
3455
3456 if (fw_state != MFI_STATE_READY)
3457 dev_info(&instance->pdev->dev, "Waiting for FW to come to ready"
3458 " state\n");
3459
3460 while (fw_state != MFI_STATE_READY) {
3461
3462 switch (fw_state) {
3463
3464 case MFI_STATE_FAULT:
3465 dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW in FAULT state!!\n");
3466 if (ocr) {
3467 max_wait = MEGASAS_RESET_WAIT_TIME;
3468 cur_state = MFI_STATE_FAULT;
3469 break;
3470 } else
3471 return -ENODEV;
3472
3473 case MFI_STATE_WAIT_HANDSHAKE:
3474 /*
3475 * Set the CLR bit in inbound doorbell
3476 */
3477 if ((instance->pdev->device ==
3478 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3479 (instance->pdev->device ==
3480 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3481 (instance->ctrl_context))
3482 writel(
3483 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
3484 &instance->reg_set->doorbell);
3485 else
3486 writel(
3487 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
3488 &instance->reg_set->inbound_doorbell);
3489
3490 max_wait = MEGASAS_RESET_WAIT_TIME;
3491 cur_state = MFI_STATE_WAIT_HANDSHAKE;
3492 break;
3493
3494 case MFI_STATE_BOOT_MESSAGE_PENDING:
3495 if ((instance->pdev->device ==
3496 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3497 (instance->pdev->device ==
3498 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3499 (instance->ctrl_context))
3500 writel(MFI_INIT_HOTPLUG,
3501 &instance->reg_set->doorbell);
3502 else
3503 writel(MFI_INIT_HOTPLUG,
3504 &instance->reg_set->inbound_doorbell);
3505
3506 max_wait = MEGASAS_RESET_WAIT_TIME;
3507 cur_state = MFI_STATE_BOOT_MESSAGE_PENDING;
3508 break;
3509
3510 case MFI_STATE_OPERATIONAL:
3511 /*
3512 * Bring it to READY state; assuming max wait 10 secs
3513 */
3514 instance->instancet->disable_intr(instance);
3515 if ((instance->pdev->device ==
3516 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3517 (instance->pdev->device ==
3518 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3519 (instance->ctrl_context)) {
3520 writel(MFI_RESET_FLAGS,
3521 &instance->reg_set->doorbell);
3522
3523 if (instance->ctrl_context) {
3524 for (i = 0; i < (10 * 1000); i += 20) {
3525 if (readl(
3526 &instance->
3527 reg_set->
3528 doorbell) & 1)
3529 msleep(20);
3530 else
3531 break;
3532 }
3533 }
3534 } else
3535 writel(MFI_RESET_FLAGS,
3536 &instance->reg_set->inbound_doorbell);
3537
3538 max_wait = MEGASAS_RESET_WAIT_TIME;
3539 cur_state = MFI_STATE_OPERATIONAL;
3540 break;
3541
3542 case MFI_STATE_UNDEFINED:
3543 /*
3544 * This state should not last for more than 2 seconds
3545 */
3546 max_wait = MEGASAS_RESET_WAIT_TIME;
3547 cur_state = MFI_STATE_UNDEFINED;
3548 break;
3549
3550 case MFI_STATE_BB_INIT:
3551 max_wait = MEGASAS_RESET_WAIT_TIME;
3552 cur_state = MFI_STATE_BB_INIT;
3553 break;
3554
3555 case MFI_STATE_FW_INIT:
3556 max_wait = MEGASAS_RESET_WAIT_TIME;
3557 cur_state = MFI_STATE_FW_INIT;
3558 break;
3559
3560 case MFI_STATE_FW_INIT_2:
3561 max_wait = MEGASAS_RESET_WAIT_TIME;
3562 cur_state = MFI_STATE_FW_INIT_2;
3563 break;
3564
3565 case MFI_STATE_DEVICE_SCAN:
3566 max_wait = MEGASAS_RESET_WAIT_TIME;
3567 cur_state = MFI_STATE_DEVICE_SCAN;
3568 break;
3569
3570 case MFI_STATE_FLUSH_CACHE:
3571 max_wait = MEGASAS_RESET_WAIT_TIME;
3572 cur_state = MFI_STATE_FLUSH_CACHE;
3573 break;
3574
3575 default:
3576 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Unknown state 0x%x\n",
3577 fw_state);
3578 return -ENODEV;
3579 }
3580
3581 /*
3582 * The cur_state should not last for more than max_wait secs
3583 */
3584 for (i = 0; i < (max_wait * 1000); i++) {
3585 curr_abs_state = instance->instancet->
3586 read_fw_status_reg(instance->reg_set);
3587
3588 if (abs_state == curr_abs_state) {
3589 msleep(1);
3590 } else
3591 break;
3592 }
3593
3594 /*
3595 * Return error if fw_state hasn't changed after max_wait
3596 */
3597 if (curr_abs_state == abs_state) {
3598 dev_printk(KERN_DEBUG, &instance->pdev->dev, "FW state [%d] hasn't changed "
3599 "in %d secs\n", fw_state, max_wait);
3600 return -ENODEV;
3601 }
3602
3603 abs_state = curr_abs_state;
3604 fw_state = curr_abs_state & MFI_STATE_MASK;
3605 }
3606 dev_info(&instance->pdev->dev, "FW now in Ready state\n");
3607
3608 return 0;
3609 }
3610
3611 /**
3612 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool
3613 * @instance: Adapter soft state
3614 */
3615 static void megasas_teardown_frame_pool(struct megasas_instance *instance)
3616 {
3617 int i;
3618 u32 max_cmd = instance->max_mfi_cmds;
3619 struct megasas_cmd *cmd;
3620
3621 if (!instance->frame_dma_pool)
3622 return;
3623
3624 /*
3625 * Return all frames to pool
3626 */
3627 for (i = 0; i < max_cmd; i++) {
3628
3629 cmd = instance->cmd_list[i];
3630
3631 if (cmd->frame)
3632 pci_pool_free(instance->frame_dma_pool, cmd->frame,
3633 cmd->frame_phys_addr);
3634
3635 if (cmd->sense)
3636 pci_pool_free(instance->sense_dma_pool, cmd->sense,
3637 cmd->sense_phys_addr);
3638 }
3639
3640 /*
3641 * Now destroy the pool itself
3642 */
3643 pci_pool_destroy(instance->frame_dma_pool);
3644 pci_pool_destroy(instance->sense_dma_pool);
3645
3646 instance->frame_dma_pool = NULL;
3647 instance->sense_dma_pool = NULL;
3648 }
3649
3650 /**
3651 * megasas_create_frame_pool - Creates DMA pool for cmd frames
3652 * @instance: Adapter soft state
3653 *
3654 * Each command packet has an embedded DMA memory buffer that is used for
3655 * filling MFI frame and the SG list that immediately follows the frame. This
3656 * function creates those DMA memory buffers for each command packet by using
3657 * PCI pool facility.
3658 */
3659 static int megasas_create_frame_pool(struct megasas_instance *instance)
3660 {
3661 int i;
3662 u32 max_cmd;
3663 u32 sge_sz;
3664 u32 total_sz;
3665 u32 frame_count;
3666 struct megasas_cmd *cmd;
3667
3668 max_cmd = instance->max_mfi_cmds;
3669
3670 /*
3671 * Size of our frame is 64 bytes for MFI frame, followed by max SG
3672 * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer
3673 */
3674 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
3675 sizeof(struct megasas_sge32);
3676
3677 if (instance->flag_ieee)
3678 sge_sz = sizeof(struct megasas_sge_skinny);
3679
3680 /*
3681 * For MFI controllers.
3682 * max_num_sge = 60
3683 * max_sge_sz = 16 byte (sizeof megasas_sge_skinny)
3684 * Total 960 byte (15 MFI frame of 64 byte)
3685 *
3686 * Fusion adapter require only 3 extra frame.
3687 * max_num_sge = 16 (defined as MAX_IOCTL_SGE)
3688 * max_sge_sz = 12 byte (sizeof megasas_sge64)
3689 * Total 192 byte (3 MFI frame of 64 byte)
3690 */
3691 frame_count = instance->ctrl_context ? (3 + 1) : (15 + 1);
3692 total_sz = MEGAMFI_FRAME_SIZE * frame_count;
3693 /*
3694 * Use DMA pool facility provided by PCI layer
3695 */
3696 instance->frame_dma_pool = pci_pool_create("megasas frame pool",
3697 instance->pdev, total_sz, 256, 0);
3698
3699 if (!instance->frame_dma_pool) {
3700 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup frame pool\n");
3701 return -ENOMEM;
3702 }
3703
3704 instance->sense_dma_pool = pci_pool_create("megasas sense pool",
3705 instance->pdev, 128, 4, 0);
3706
3707 if (!instance->sense_dma_pool) {
3708 dev_printk(KERN_DEBUG, &instance->pdev->dev, "failed to setup sense pool\n");
3709
3710 pci_pool_destroy(instance->frame_dma_pool);
3711 instance->frame_dma_pool = NULL;
3712
3713 return -ENOMEM;
3714 }
3715
3716 /*
3717 * Allocate and attach a frame to each of the commands in cmd_list.
3718 * By making cmd->index as the context instead of the &cmd, we can
3719 * always use 32bit context regardless of the architecture
3720 */
3721 for (i = 0; i < max_cmd; i++) {
3722
3723 cmd = instance->cmd_list[i];
3724
3725 cmd->frame = pci_pool_alloc(instance->frame_dma_pool,
3726 GFP_KERNEL, &cmd->frame_phys_addr);
3727
3728 cmd->sense = pci_pool_alloc(instance->sense_dma_pool,
3729 GFP_KERNEL, &cmd->sense_phys_addr);
3730
3731 /*
3732 * megasas_teardown_frame_pool() takes care of freeing
3733 * whatever has been allocated
3734 */
3735 if (!cmd->frame || !cmd->sense) {
3736 dev_printk(KERN_DEBUG, &instance->pdev->dev, "pci_pool_alloc failed\n");
3737 megasas_teardown_frame_pool(instance);
3738 return -ENOMEM;
3739 }
3740
3741 memset(cmd->frame, 0, total_sz);
3742 cmd->frame->io.context = cpu_to_le32(cmd->index);
3743 cmd->frame->io.pad_0 = 0;
3744 if (!instance->ctrl_context && reset_devices)
3745 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
3746 }
3747
3748 return 0;
3749 }
3750
3751 /**
3752 * megasas_free_cmds - Free all the cmds in the free cmd pool
3753 * @instance: Adapter soft state
3754 */
3755 void megasas_free_cmds(struct megasas_instance *instance)
3756 {
3757 int i;
3758
3759 /* First free the MFI frame pool */
3760 megasas_teardown_frame_pool(instance);
3761
3762 /* Free all the commands in the cmd_list */
3763 for (i = 0; i < instance->max_mfi_cmds; i++)
3764
3765 kfree(instance->cmd_list[i]);
3766
3767 /* Free the cmd_list buffer itself */
3768 kfree(instance->cmd_list);
3769 instance->cmd_list = NULL;
3770
3771 INIT_LIST_HEAD(&instance->cmd_pool);
3772 }
3773
3774 /**
3775 * megasas_alloc_cmds - Allocates the command packets
3776 * @instance: Adapter soft state
3777 *
3778 * Each command that is issued to the FW, whether IO commands from the OS or
3779 * internal commands like IOCTLs, are wrapped in local data structure called
3780 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
3781 * the FW.
3782 *
3783 * Each frame has a 32-bit field called context (tag). This context is used
3784 * to get back the megasas_cmd from the frame when a frame gets completed in
3785 * the ISR. Typically the address of the megasas_cmd itself would be used as
3786 * the context. But we wanted to keep the differences between 32 and 64 bit
3787 * systems to the mininum. We always use 32 bit integers for the context. In
3788 * this driver, the 32 bit values are the indices into an array cmd_list.
3789 * This array is used only to look up the megasas_cmd given the context. The
3790 * free commands themselves are maintained in a linked list called cmd_pool.
3791 */
3792 int megasas_alloc_cmds(struct megasas_instance *instance)
3793 {
3794 int i;
3795 int j;
3796 u32 max_cmd;
3797 struct megasas_cmd *cmd;
3798 struct fusion_context *fusion;
3799
3800 fusion = instance->ctrl_context;
3801 max_cmd = instance->max_mfi_cmds;
3802
3803 /*
3804 * instance->cmd_list is an array of struct megasas_cmd pointers.
3805 * Allocate the dynamic array first and then allocate individual
3806 * commands.
3807 */
3808 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
3809
3810 if (!instance->cmd_list) {
3811 dev_printk(KERN_DEBUG, &instance->pdev->dev, "out of memory\n");
3812 return -ENOMEM;
3813 }
3814
3815 memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd);
3816
3817 for (i = 0; i < max_cmd; i++) {
3818 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
3819 GFP_KERNEL);
3820
3821 if (!instance->cmd_list[i]) {
3822
3823 for (j = 0; j < i; j++)
3824 kfree(instance->cmd_list[j]);
3825
3826 kfree(instance->cmd_list);
3827 instance->cmd_list = NULL;
3828
3829 return -ENOMEM;
3830 }
3831 }
3832
3833 for (i = 0; i < max_cmd; i++) {
3834 cmd = instance->cmd_list[i];
3835 memset(cmd, 0, sizeof(struct megasas_cmd));
3836 cmd->index = i;
3837 cmd->scmd = NULL;
3838 cmd->instance = instance;
3839
3840 list_add_tail(&cmd->list, &instance->cmd_pool);
3841 }
3842
3843 /*
3844 * Create a frame pool and assign one frame to each cmd
3845 */
3846 if (megasas_create_frame_pool(instance)) {
3847 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error creating frame DMA pool\n");
3848 megasas_free_cmds(instance);
3849 }
3850
3851 return 0;
3852 }
3853
3854 /*
3855 * megasas_get_pd_list_info - Returns FW's pd_list structure
3856 * @instance: Adapter soft state
3857 * @pd_list: pd_list structure
3858 *
3859 * Issues an internal command (DCMD) to get the FW's controller PD
3860 * list structure. This information is mainly used to find out SYSTEM
3861 * supported by the FW.
3862 */
3863 static int
3864 megasas_get_pd_list(struct megasas_instance *instance)
3865 {
3866 int ret = 0, pd_index = 0;
3867 struct megasas_cmd *cmd;
3868 struct megasas_dcmd_frame *dcmd;
3869 struct MR_PD_LIST *ci;
3870 struct MR_PD_ADDRESS *pd_addr;
3871 dma_addr_t ci_h = 0;
3872
3873 cmd = megasas_get_cmd(instance);
3874
3875 if (!cmd) {
3876 dev_printk(KERN_DEBUG, &instance->pdev->dev, "(get_pd_list): Failed to get cmd\n");
3877 return -ENOMEM;
3878 }
3879
3880 dcmd = &cmd->frame->dcmd;
3881
3882 ci = pci_alloc_consistent(instance->pdev,
3883 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h);
3884
3885 if (!ci) {
3886 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for pd_list\n");
3887 megasas_return_cmd(instance, cmd);
3888 return -ENOMEM;
3889 }
3890
3891 memset(ci, 0, sizeof(*ci));
3892 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3893
3894 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
3895 dcmd->mbox.b[1] = 0;
3896 dcmd->cmd = MFI_CMD_DCMD;
3897 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
3898 dcmd->sge_count = 1;
3899 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
3900 dcmd->timeout = 0;
3901 dcmd->pad_0 = 0;
3902 dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
3903 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY);
3904 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
3905 dcmd->sgl.sge32[0].length = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
3906
3907 if (instance->ctrl_context && !instance->mask_interrupts)
3908 ret = megasas_issue_blocked_cmd(instance, cmd,
3909 MEGASAS_BLOCKED_CMD_TIMEOUT);
3910 else
3911 ret = megasas_issue_polled(instance, cmd);
3912
3913 /*
3914 * the following function will get the instance PD LIST.
3915 */
3916
3917 pd_addr = ci->addr;
3918
3919 if (ret == 0 &&
3920 (le32_to_cpu(ci->count) <
3921 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) {
3922
3923 memset(instance->local_pd_list, 0,
3924 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
3925
3926 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) {
3927
3928 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid =
3929 le16_to_cpu(pd_addr->deviceId);
3930 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType =
3931 pd_addr->scsiDevType;
3932 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState =
3933 MR_PD_STATE_SYSTEM;
3934 pd_addr++;
3935 }
3936 memcpy(instance->pd_list, instance->local_pd_list,
3937 sizeof(instance->pd_list));
3938 }
3939
3940 pci_free_consistent(instance->pdev,
3941 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
3942 ci, ci_h);
3943
3944 megasas_return_cmd(instance, cmd);
3945
3946 return ret;
3947 }
3948
3949 /*
3950 * megasas_get_ld_list_info - Returns FW's ld_list structure
3951 * @instance: Adapter soft state
3952 * @ld_list: ld_list structure
3953 *
3954 * Issues an internal command (DCMD) to get the FW's controller PD
3955 * list structure. This information is mainly used to find out SYSTEM
3956 * supported by the FW.
3957 */
3958 static int
3959 megasas_get_ld_list(struct megasas_instance *instance)
3960 {
3961 int ret = 0, ld_index = 0, ids = 0;
3962 struct megasas_cmd *cmd;
3963 struct megasas_dcmd_frame *dcmd;
3964 struct MR_LD_LIST *ci;
3965 dma_addr_t ci_h = 0;
3966 u32 ld_count;
3967
3968 cmd = megasas_get_cmd(instance);
3969
3970 if (!cmd) {
3971 dev_printk(KERN_DEBUG, &instance->pdev->dev, "megasas_get_ld_list: Failed to get cmd\n");
3972 return -ENOMEM;
3973 }
3974
3975 dcmd = &cmd->frame->dcmd;
3976
3977 ci = pci_alloc_consistent(instance->pdev,
3978 sizeof(struct MR_LD_LIST),
3979 &ci_h);
3980
3981 if (!ci) {
3982 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem in get_ld_list\n");
3983 megasas_return_cmd(instance, cmd);
3984 return -ENOMEM;
3985 }
3986
3987 memset(ci, 0, sizeof(*ci));
3988 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3989
3990 if (instance->supportmax256vd)
3991 dcmd->mbox.b[0] = 1;
3992 dcmd->cmd = MFI_CMD_DCMD;
3993 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
3994 dcmd->sge_count = 1;
3995 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
3996 dcmd->timeout = 0;
3997 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST));
3998 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST);
3999 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
4000 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_LIST));
4001 dcmd->pad_0 = 0;
4002
4003 if (instance->ctrl_context && !instance->mask_interrupts)
4004 ret = megasas_issue_blocked_cmd(instance, cmd,
4005 MEGASAS_BLOCKED_CMD_TIMEOUT);
4006 else
4007 ret = megasas_issue_polled(instance, cmd);
4008
4009
4010 ld_count = le32_to_cpu(ci->ldCount);
4011
4012 /* the following function will get the instance PD LIST */
4013
4014 if ((ret == 0) && (ld_count <= instance->fw_supported_vd_count)) {
4015 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
4016
4017 for (ld_index = 0; ld_index < ld_count; ld_index++) {
4018 if (ci->ldList[ld_index].state != 0) {
4019 ids = ci->ldList[ld_index].ref.targetId;
4020 instance->ld_ids[ids] =
4021 ci->ldList[ld_index].ref.targetId;
4022 }
4023 }
4024 }
4025
4026 pci_free_consistent(instance->pdev,
4027 sizeof(struct MR_LD_LIST),
4028 ci,
4029 ci_h);
4030
4031 megasas_return_cmd(instance, cmd);
4032 return ret;
4033 }
4034
4035 /**
4036 * megasas_ld_list_query - Returns FW's ld_list structure
4037 * @instance: Adapter soft state
4038 * @ld_list: ld_list structure
4039 *
4040 * Issues an internal command (DCMD) to get the FW's controller PD
4041 * list structure. This information is mainly used to find out SYSTEM
4042 * supported by the FW.
4043 */
4044 static int
4045 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
4046 {
4047 int ret = 0, ld_index = 0, ids = 0;
4048 struct megasas_cmd *cmd;
4049 struct megasas_dcmd_frame *dcmd;
4050 struct MR_LD_TARGETID_LIST *ci;
4051 dma_addr_t ci_h = 0;
4052 u32 tgtid_count;
4053
4054 cmd = megasas_get_cmd(instance);
4055
4056 if (!cmd) {
4057 dev_warn(&instance->pdev->dev,
4058 "megasas_ld_list_query: Failed to get cmd\n");
4059 return -ENOMEM;
4060 }
4061
4062 dcmd = &cmd->frame->dcmd;
4063
4064 ci = pci_alloc_consistent(instance->pdev,
4065 sizeof(struct MR_LD_TARGETID_LIST), &ci_h);
4066
4067 if (!ci) {
4068 dev_warn(&instance->pdev->dev,
4069 "Failed to alloc mem for ld_list_query\n");
4070 megasas_return_cmd(instance, cmd);
4071 return -ENOMEM;
4072 }
4073
4074 memset(ci, 0, sizeof(*ci));
4075 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4076
4077 dcmd->mbox.b[0] = query_type;
4078 if (instance->supportmax256vd)
4079 dcmd->mbox.b[2] = 1;
4080
4081 dcmd->cmd = MFI_CMD_DCMD;
4082 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4083 dcmd->sge_count = 1;
4084 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4085 dcmd->timeout = 0;
4086 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
4087 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY);
4088 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
4089 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
4090 dcmd->pad_0 = 0;
4091
4092 if (instance->ctrl_context && !instance->mask_interrupts)
4093 ret = megasas_issue_blocked_cmd(instance, cmd,
4094 MEGASAS_BLOCKED_CMD_TIMEOUT);
4095 else
4096 ret = megasas_issue_polled(instance, cmd);
4097
4098 tgtid_count = le32_to_cpu(ci->count);
4099
4100 if ((ret == 0) && (tgtid_count <= (instance->fw_supported_vd_count))) {
4101 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
4102 for (ld_index = 0; ld_index < tgtid_count; ld_index++) {
4103 ids = ci->targetId[ld_index];
4104 instance->ld_ids[ids] = ci->targetId[ld_index];
4105 }
4106
4107 }
4108
4109 pci_free_consistent(instance->pdev, sizeof(struct MR_LD_TARGETID_LIST),
4110 ci, ci_h);
4111
4112 megasas_return_cmd(instance, cmd);
4113
4114 return ret;
4115 }
4116
4117 /*
4118 * megasas_update_ext_vd_details : Update details w.r.t Extended VD
4119 * instance : Controller's instance
4120 */
4121 static void megasas_update_ext_vd_details(struct megasas_instance *instance)
4122 {
4123 struct fusion_context *fusion;
4124 u32 old_map_sz;
4125 u32 new_map_sz;
4126
4127 fusion = instance->ctrl_context;
4128 /* For MFI based controllers return dummy success */
4129 if (!fusion)
4130 return;
4131
4132 instance->supportmax256vd =
4133 instance->ctrl_info->adapterOperations3.supportMaxExtLDs;
4134 /* Below is additional check to address future FW enhancement */
4135 if (instance->ctrl_info->max_lds > 64)
4136 instance->supportmax256vd = 1;
4137
4138 instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS
4139 * MEGASAS_MAX_DEV_PER_CHANNEL;
4140 instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS
4141 * MEGASAS_MAX_DEV_PER_CHANNEL;
4142 if (instance->supportmax256vd) {
4143 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT;
4144 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
4145 } else {
4146 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
4147 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
4148 }
4149
4150 dev_info(&instance->pdev->dev,
4151 "firmware type\t: %s\n",
4152 instance->supportmax256vd ? "Extended VD(240 VD)firmware" :
4153 "Legacy(64 VD) firmware");
4154
4155 old_map_sz = sizeof(struct MR_FW_RAID_MAP) +
4156 (sizeof(struct MR_LD_SPAN_MAP) *
4157 (instance->fw_supported_vd_count - 1));
4158 new_map_sz = sizeof(struct MR_FW_RAID_MAP_EXT);
4159 fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP) +
4160 (sizeof(struct MR_LD_SPAN_MAP) *
4161 (instance->drv_supported_vd_count - 1));
4162
4163 fusion->max_map_sz = max(old_map_sz, new_map_sz);
4164
4165
4166 if (instance->supportmax256vd)
4167 fusion->current_map_sz = new_map_sz;
4168 else
4169 fusion->current_map_sz = old_map_sz;
4170 }
4171
4172 /**
4173 * megasas_get_controller_info - Returns FW's controller structure
4174 * @instance: Adapter soft state
4175 *
4176 * Issues an internal command (DCMD) to get the FW's controller structure.
4177 * This information is mainly used to find out the maximum IO transfer per
4178 * command supported by the FW.
4179 */
4180 int
4181 megasas_get_ctrl_info(struct megasas_instance *instance)
4182 {
4183 int ret = 0;
4184 struct megasas_cmd *cmd;
4185 struct megasas_dcmd_frame *dcmd;
4186 struct megasas_ctrl_info *ci;
4187 struct megasas_ctrl_info *ctrl_info;
4188 dma_addr_t ci_h = 0;
4189
4190 ctrl_info = instance->ctrl_info;
4191
4192 cmd = megasas_get_cmd(instance);
4193
4194 if (!cmd) {
4195 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a free cmd\n");
4196 return -ENOMEM;
4197 }
4198
4199 dcmd = &cmd->frame->dcmd;
4200
4201 ci = pci_alloc_consistent(instance->pdev,
4202 sizeof(struct megasas_ctrl_info), &ci_h);
4203
4204 if (!ci) {
4205 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc mem for ctrl info\n");
4206 megasas_return_cmd(instance, cmd);
4207 return -ENOMEM;
4208 }
4209
4210 memset(ci, 0, sizeof(*ci));
4211 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4212
4213 dcmd->cmd = MFI_CMD_DCMD;
4214 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4215 dcmd->sge_count = 1;
4216 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4217 dcmd->timeout = 0;
4218 dcmd->pad_0 = 0;
4219 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info));
4220 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO);
4221 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
4222 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_ctrl_info));
4223 dcmd->mbox.b[0] = 1;
4224
4225 if (instance->ctrl_context && !instance->mask_interrupts)
4226 ret = megasas_issue_blocked_cmd(instance, cmd,
4227 MEGASAS_BLOCKED_CMD_TIMEOUT);
4228 else
4229 ret = megasas_issue_polled(instance, cmd);
4230
4231 if (!ret) {
4232 memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info));
4233 le32_to_cpus((u32 *)&ctrl_info->properties.OnOffProperties);
4234 le32_to_cpus((u32 *)&ctrl_info->adapterOperations2);
4235 le32_to_cpus((u32 *)&ctrl_info->adapterOperations3);
4236 megasas_update_ext_vd_details(instance);
4237 instance->use_seqnum_jbod_fp =
4238 ctrl_info->adapterOperations3.useSeqNumJbodFP;
4239 instance->is_imr = (ctrl_info->memory_size ? 0 : 1);
4240 dev_info(&instance->pdev->dev,
4241 "controller type\t: %s(%dMB)\n",
4242 instance->is_imr ? "iMR" : "MR",
4243 le16_to_cpu(ctrl_info->memory_size));
4244 instance->disableOnlineCtrlReset =
4245 ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset;
4246 dev_info(&instance->pdev->dev, "Online Controller Reset(OCR)\t: %s\n",
4247 instance->disableOnlineCtrlReset ? "Disabled" : "Enabled");
4248 instance->secure_jbod_support =
4249 ctrl_info->adapterOperations3.supportSecurityonJBOD;
4250 dev_info(&instance->pdev->dev, "Secure JBOD support\t: %s\n",
4251 instance->secure_jbod_support ? "Yes" : "No");
4252 }
4253
4254 pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info),
4255 ci, ci_h);
4256
4257 megasas_return_cmd(instance, cmd);
4258 return ret;
4259 }
4260
4261 /*
4262 * megasas_set_crash_dump_params - Sends address of crash dump DMA buffer
4263 * to firmware
4264 *
4265 * @instance: Adapter soft state
4266 * @crash_buf_state - tell FW to turn ON/OFF crash dump feature
4267 MR_CRASH_BUF_TURN_OFF = 0
4268 MR_CRASH_BUF_TURN_ON = 1
4269 * @return 0 on success non-zero on failure.
4270 * Issues an internal command (DCMD) to set parameters for crash dump feature.
4271 * Driver will send address of crash dump DMA buffer and set mbox to tell FW
4272 * that driver supports crash dump feature. This DCMD will be sent only if
4273 * crash dump feature is supported by the FW.
4274 *
4275 */
4276 int megasas_set_crash_dump_params(struct megasas_instance *instance,
4277 u8 crash_buf_state)
4278 {
4279 int ret = 0;
4280 struct megasas_cmd *cmd;
4281 struct megasas_dcmd_frame *dcmd;
4282
4283 cmd = megasas_get_cmd(instance);
4284
4285 if (!cmd) {
4286 dev_err(&instance->pdev->dev, "Failed to get a free cmd\n");
4287 return -ENOMEM;
4288 }
4289
4290
4291 dcmd = &cmd->frame->dcmd;
4292
4293 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4294 dcmd->mbox.b[0] = crash_buf_state;
4295 dcmd->cmd = MFI_CMD_DCMD;
4296 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4297 dcmd->sge_count = 1;
4298 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
4299 dcmd->timeout = 0;
4300 dcmd->pad_0 = 0;
4301 dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE);
4302 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS);
4303 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->crash_dump_h);
4304 dcmd->sgl.sge32[0].length = cpu_to_le32(CRASH_DMA_BUF_SIZE);
4305
4306 if (instance->ctrl_context && !instance->mask_interrupts)
4307 ret = megasas_issue_blocked_cmd(instance, cmd,
4308 MEGASAS_BLOCKED_CMD_TIMEOUT);
4309 else
4310 ret = megasas_issue_polled(instance, cmd);
4311
4312 megasas_return_cmd(instance, cmd);
4313 return ret;
4314 }
4315
4316 /**
4317 * megasas_issue_init_mfi - Initializes the FW
4318 * @instance: Adapter soft state
4319 *
4320 * Issues the INIT MFI cmd
4321 */
4322 static int
4323 megasas_issue_init_mfi(struct megasas_instance *instance)
4324 {
4325 __le32 context;
4326 struct megasas_cmd *cmd;
4327 struct megasas_init_frame *init_frame;
4328 struct megasas_init_queue_info *initq_info;
4329 dma_addr_t init_frame_h;
4330 dma_addr_t initq_info_h;
4331
4332 /*
4333 * Prepare a init frame. Note the init frame points to queue info
4334 * structure. Each frame has SGL allocated after first 64 bytes. For
4335 * this frame - since we don't need any SGL - we use SGL's space as
4336 * queue info structure
4337 *
4338 * We will not get a NULL command below. We just created the pool.
4339 */
4340 cmd = megasas_get_cmd(instance);
4341
4342 init_frame = (struct megasas_init_frame *)cmd->frame;
4343 initq_info = (struct megasas_init_queue_info *)
4344 ((unsigned long)init_frame + 64);
4345
4346 init_frame_h = cmd->frame_phys_addr;
4347 initq_info_h = init_frame_h + 64;
4348
4349 context = init_frame->context;
4350 memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
4351 memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
4352 init_frame->context = context;
4353
4354 initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1);
4355 initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h);
4356
4357 initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h);
4358 initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h);
4359
4360 init_frame->cmd = MFI_CMD_INIT;
4361 init_frame->cmd_status = MFI_STAT_INVALID_STATUS;
4362 init_frame->queue_info_new_phys_addr_lo =
4363 cpu_to_le32(lower_32_bits(initq_info_h));
4364 init_frame->queue_info_new_phys_addr_hi =
4365 cpu_to_le32(upper_32_bits(initq_info_h));
4366
4367 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info));
4368
4369 /*
4370 * disable the intr before firing the init frame to FW
4371 */
4372 instance->instancet->disable_intr(instance);
4373
4374 /*
4375 * Issue the init frame in polled mode
4376 */
4377
4378 if (megasas_issue_polled(instance, cmd)) {
4379 dev_err(&instance->pdev->dev, "Failed to init firmware\n");
4380 megasas_return_cmd(instance, cmd);
4381 goto fail_fw_init;
4382 }
4383
4384 megasas_return_cmd(instance, cmd);
4385
4386 return 0;
4387
4388 fail_fw_init:
4389 return -EINVAL;
4390 }
4391
4392 static u32
4393 megasas_init_adapter_mfi(struct megasas_instance *instance)
4394 {
4395 struct megasas_register_set __iomem *reg_set;
4396 u32 context_sz;
4397 u32 reply_q_sz;
4398
4399 reg_set = instance->reg_set;
4400
4401 /*
4402 * Get various operational parameters from status register
4403 */
4404 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF;
4405 /*
4406 * Reduce the max supported cmds by 1. This is to ensure that the
4407 * reply_q_sz (1 more than the max cmd that driver may send)
4408 * does not exceed max cmds that the FW can support
4409 */
4410 instance->max_fw_cmds = instance->max_fw_cmds-1;
4411 instance->max_mfi_cmds = instance->max_fw_cmds;
4412 instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >>
4413 0x10;
4414 /*
4415 * For MFI skinny adapters, MEGASAS_SKINNY_INT_CMDS commands
4416 * are reserved for IOCTL + driver's internal DCMDs.
4417 */
4418 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4419 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
4420 instance->max_scsi_cmds = (instance->max_fw_cmds -
4421 MEGASAS_SKINNY_INT_CMDS);
4422 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
4423 } else {
4424 instance->max_scsi_cmds = (instance->max_fw_cmds -
4425 MEGASAS_INT_CMDS);
4426 sema_init(&instance->ioctl_sem, (MEGASAS_MFI_IOCTL_CMDS));
4427 }
4428
4429 /*
4430 * Create a pool of commands
4431 */
4432 if (megasas_alloc_cmds(instance))
4433 goto fail_alloc_cmds;
4434
4435 /*
4436 * Allocate memory for reply queue. Length of reply queue should
4437 * be _one_ more than the maximum commands handled by the firmware.
4438 *
4439 * Note: When FW completes commands, it places corresponding contex
4440 * values in this circular reply queue. This circular queue is a fairly
4441 * typical producer-consumer queue. FW is the producer (of completed
4442 * commands) and the driver is the consumer.
4443 */
4444 context_sz = sizeof(u32);
4445 reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
4446
4447 instance->reply_queue = pci_alloc_consistent(instance->pdev,
4448 reply_q_sz,
4449 &instance->reply_queue_h);
4450
4451 if (!instance->reply_queue) {
4452 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Out of DMA mem for reply queue\n");
4453 goto fail_reply_queue;
4454 }
4455
4456 if (megasas_issue_init_mfi(instance))
4457 goto fail_fw_init;
4458
4459 if (megasas_get_ctrl_info(instance)) {
4460 dev_err(&instance->pdev->dev, "(%d): Could get controller info "
4461 "Fail from %s %d\n", instance->unique_id,
4462 __func__, __LINE__);
4463 goto fail_fw_init;
4464 }
4465
4466 instance->fw_support_ieee = 0;
4467 instance->fw_support_ieee =
4468 (instance->instancet->read_fw_status_reg(reg_set) &
4469 0x04000000);
4470
4471 dev_notice(&instance->pdev->dev, "megasas_init_mfi: fw_support_ieee=%d",
4472 instance->fw_support_ieee);
4473
4474 if (instance->fw_support_ieee)
4475 instance->flag_ieee = 1;
4476
4477 return 0;
4478
4479 fail_fw_init:
4480
4481 pci_free_consistent(instance->pdev, reply_q_sz,
4482 instance->reply_queue, instance->reply_queue_h);
4483 fail_reply_queue:
4484 megasas_free_cmds(instance);
4485
4486 fail_alloc_cmds:
4487 return 1;
4488 }
4489
4490 /*
4491 * megasas_setup_irqs_msix - register legacy interrupts.
4492 * @instance: Adapter soft state
4493 *
4494 * Do not enable interrupt, only setup ISRs.
4495 *
4496 * Return 0 on success.
4497 */
4498 static int
4499 megasas_setup_irqs_ioapic(struct megasas_instance *instance)
4500 {
4501 struct pci_dev *pdev;
4502
4503 pdev = instance->pdev;
4504 instance->irq_context[0].instance = instance;
4505 instance->irq_context[0].MSIxIndex = 0;
4506 if (request_irq(pdev->irq, instance->instancet->service_isr,
4507 IRQF_SHARED, "megasas", &instance->irq_context[0])) {
4508 dev_err(&instance->pdev->dev,
4509 "Failed to register IRQ from %s %d\n",
4510 __func__, __LINE__);
4511 return -1;
4512 }
4513 return 0;
4514 }
4515
4516 /**
4517 * megasas_setup_irqs_msix - register MSI-x interrupts.
4518 * @instance: Adapter soft state
4519 * @is_probe: Driver probe check
4520 *
4521 * Do not enable interrupt, only setup ISRs.
4522 *
4523 * Return 0 on success.
4524 */
4525 static int
4526 megasas_setup_irqs_msix(struct megasas_instance *instance, u8 is_probe)
4527 {
4528 int i, j, cpu;
4529 struct pci_dev *pdev;
4530
4531 pdev = instance->pdev;
4532
4533 /* Try MSI-x */
4534 cpu = cpumask_first(cpu_online_mask);
4535 for (i = 0; i < instance->msix_vectors; i++) {
4536 instance->irq_context[i].instance = instance;
4537 instance->irq_context[i].MSIxIndex = i;
4538 if (request_irq(instance->msixentry[i].vector,
4539 instance->instancet->service_isr, 0, "megasas",
4540 &instance->irq_context[i])) {
4541 dev_err(&instance->pdev->dev,
4542 "Failed to register IRQ for vector %d.\n", i);
4543 for (j = 0; j < i; j++) {
4544 if (smp_affinity_enable)
4545 irq_set_affinity_hint(
4546 instance->msixentry[j].vector, NULL);
4547 free_irq(instance->msixentry[j].vector,
4548 &instance->irq_context[j]);
4549 }
4550 /* Retry irq register for IO_APIC*/
4551 instance->msix_vectors = 0;
4552 if (is_probe)
4553 return megasas_setup_irqs_ioapic(instance);
4554 else
4555 return -1;
4556 }
4557 if (smp_affinity_enable) {
4558 if (irq_set_affinity_hint(instance->msixentry[i].vector,
4559 get_cpu_mask(cpu)))
4560 dev_err(&instance->pdev->dev,
4561 "Failed to set affinity hint"
4562 " for cpu %d\n", cpu);
4563 cpu = cpumask_next(cpu, cpu_online_mask);
4564 }
4565 }
4566 return 0;
4567 }
4568
4569 /*
4570 * megasas_destroy_irqs- unregister interrupts.
4571 * @instance: Adapter soft state
4572 * return: void
4573 */
4574 static void
4575 megasas_destroy_irqs(struct megasas_instance *instance) {
4576
4577 int i;
4578
4579 if (instance->msix_vectors)
4580 for (i = 0; i < instance->msix_vectors; i++) {
4581 if (smp_affinity_enable)
4582 irq_set_affinity_hint(
4583 instance->msixentry[i].vector, NULL);
4584 free_irq(instance->msixentry[i].vector,
4585 &instance->irq_context[i]);
4586 }
4587 else
4588 free_irq(instance->pdev->irq, &instance->irq_context[0]);
4589 }
4590
4591 /**
4592 * megasas_setup_jbod_map - setup jbod map for FP seq_number.
4593 * @instance: Adapter soft state
4594 * @is_probe: Driver probe check
4595 *
4596 * Return 0 on success.
4597 */
4598 void
4599 megasas_setup_jbod_map(struct megasas_instance *instance)
4600 {
4601 int i;
4602 struct fusion_context *fusion = instance->ctrl_context;
4603 u32 pd_seq_map_sz;
4604
4605 pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
4606 (sizeof(struct MR_PD_CFG_SEQ) * (MAX_PHYSICAL_DEVICES - 1));
4607
4608 if (reset_devices || !fusion ||
4609 !instance->ctrl_info->adapterOperations3.useSeqNumJbodFP) {
4610 dev_info(&instance->pdev->dev,
4611 "Jbod map is not supported %s %d\n",
4612 __func__, __LINE__);
4613 instance->use_seqnum_jbod_fp = false;
4614 return;
4615 }
4616
4617 if (fusion->pd_seq_sync[0])
4618 goto skip_alloc;
4619
4620 for (i = 0; i < JBOD_MAPS_COUNT; i++) {
4621 fusion->pd_seq_sync[i] = dma_alloc_coherent
4622 (&instance->pdev->dev, pd_seq_map_sz,
4623 &fusion->pd_seq_phys[i], GFP_KERNEL);
4624 if (!fusion->pd_seq_sync[i]) {
4625 dev_err(&instance->pdev->dev,
4626 "Failed to allocate memory from %s %d\n",
4627 __func__, __LINE__);
4628 if (i == 1) {
4629 dma_free_coherent(&instance->pdev->dev,
4630 pd_seq_map_sz, fusion->pd_seq_sync[0],
4631 fusion->pd_seq_phys[0]);
4632 fusion->pd_seq_sync[0] = NULL;
4633 }
4634 instance->use_seqnum_jbod_fp = false;
4635 return;
4636 }
4637 }
4638
4639 skip_alloc:
4640 if (!megasas_sync_pd_seq_num(instance, false) &&
4641 !megasas_sync_pd_seq_num(instance, true))
4642 instance->use_seqnum_jbod_fp = true;
4643 else
4644 instance->use_seqnum_jbod_fp = false;
4645 }
4646
4647 /**
4648 * megasas_init_fw - Initializes the FW
4649 * @instance: Adapter soft state
4650 *
4651 * This is the main function for initializing firmware
4652 */
4653
4654 static int megasas_init_fw(struct megasas_instance *instance)
4655 {
4656 u32 max_sectors_1;
4657 u32 max_sectors_2;
4658 u32 tmp_sectors, msix_enable, scratch_pad_2;
4659 resource_size_t base_addr;
4660 struct megasas_register_set __iomem *reg_set;
4661 struct megasas_ctrl_info *ctrl_info = NULL;
4662 unsigned long bar_list;
4663 int i, loop, fw_msix_count = 0;
4664 struct IOV_111 *iovPtr;
4665 struct fusion_context *fusion;
4666
4667 fusion = instance->ctrl_context;
4668
4669 /* Find first memory bar */
4670 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
4671 instance->bar = find_first_bit(&bar_list, sizeof(unsigned long));
4672 if (pci_request_selected_regions(instance->pdev, instance->bar,
4673 "megasas: LSI")) {
4674 dev_printk(KERN_DEBUG, &instance->pdev->dev, "IO memory region busy!\n");
4675 return -EBUSY;
4676 }
4677
4678 base_addr = pci_resource_start(instance->pdev, instance->bar);
4679 instance->reg_set = ioremap_nocache(base_addr, 8192);
4680
4681 if (!instance->reg_set) {
4682 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to map IO mem\n");
4683 goto fail_ioremap;
4684 }
4685
4686 reg_set = instance->reg_set;
4687
4688 switch (instance->pdev->device) {
4689 case PCI_DEVICE_ID_LSI_FUSION:
4690 case PCI_DEVICE_ID_LSI_PLASMA:
4691 case PCI_DEVICE_ID_LSI_INVADER:
4692 case PCI_DEVICE_ID_LSI_FURY:
4693 case PCI_DEVICE_ID_LSI_INTRUDER:
4694 case PCI_DEVICE_ID_LSI_INTRUDER_24:
4695 case PCI_DEVICE_ID_LSI_CUTLASS_52:
4696 case PCI_DEVICE_ID_LSI_CUTLASS_53:
4697 instance->instancet = &megasas_instance_template_fusion;
4698 break;
4699 case PCI_DEVICE_ID_LSI_SAS1078R:
4700 case PCI_DEVICE_ID_LSI_SAS1078DE:
4701 instance->instancet = &megasas_instance_template_ppc;
4702 break;
4703 case PCI_DEVICE_ID_LSI_SAS1078GEN2:
4704 case PCI_DEVICE_ID_LSI_SAS0079GEN2:
4705 instance->instancet = &megasas_instance_template_gen2;
4706 break;
4707 case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
4708 case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
4709 instance->instancet = &megasas_instance_template_skinny;
4710 break;
4711 case PCI_DEVICE_ID_LSI_SAS1064R:
4712 case PCI_DEVICE_ID_DELL_PERC5:
4713 default:
4714 instance->instancet = &megasas_instance_template_xscale;
4715 instance->allow_fw_scan = 1;
4716 break;
4717 }
4718
4719 if (megasas_transition_to_ready(instance, 0)) {
4720 atomic_set(&instance->fw_reset_no_pci_access, 1);
4721 instance->instancet->adp_reset
4722 (instance, instance->reg_set);
4723 atomic_set(&instance->fw_reset_no_pci_access, 0);
4724 dev_info(&instance->pdev->dev,
4725 "FW restarted successfully from %s!\n",
4726 __func__);
4727
4728 /*waitting for about 30 second before retry*/
4729 ssleep(30);
4730
4731 if (megasas_transition_to_ready(instance, 0))
4732 goto fail_ready_state;
4733 }
4734
4735 /*
4736 * MSI-X host index 0 is common for all adapter.
4737 * It is used for all MPT based Adapters.
4738 */
4739 instance->reply_post_host_index_addr[0] =
4740 (u32 __iomem *)((u8 __iomem *)instance->reg_set +
4741 MPI2_REPLY_POST_HOST_INDEX_OFFSET);
4742
4743 /* Check if MSI-X is supported while in ready state */
4744 msix_enable = (instance->instancet->read_fw_status_reg(reg_set) &
4745 0x4000000) >> 0x1a;
4746 if (msix_enable && !msix_disable) {
4747 scratch_pad_2 = readl
4748 (&instance->reg_set->outbound_scratch_pad_2);
4749 /* Check max MSI-X vectors */
4750 if (fusion) {
4751 if (fusion->adapter_type == THUNDERBOLT_SERIES) { /* Thunderbolt Series*/
4752 instance->msix_vectors = (scratch_pad_2
4753 & MR_MAX_REPLY_QUEUES_OFFSET) + 1;
4754 fw_msix_count = instance->msix_vectors;
4755 } else { /* Invader series supports more than 8 MSI-x vectors*/
4756 instance->msix_vectors = ((scratch_pad_2
4757 & MR_MAX_REPLY_QUEUES_EXT_OFFSET)
4758 >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1;
4759 fw_msix_count = instance->msix_vectors;
4760 /* Save 1-15 reply post index address to local memory
4761 * Index 0 is already saved from reg offset
4762 * MPI2_REPLY_POST_HOST_INDEX_OFFSET
4763 */
4764 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) {
4765 instance->reply_post_host_index_addr[loop] =
4766 (u32 __iomem *)
4767 ((u8 __iomem *)instance->reg_set +
4768 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET
4769 + (loop * 0x10));
4770 }
4771 }
4772 if (msix_vectors)
4773 instance->msix_vectors = min(msix_vectors,
4774 instance->msix_vectors);
4775 } else /* MFI adapters */
4776 instance->msix_vectors = 1;
4777 /* Don't bother allocating more MSI-X vectors than cpus */
4778 instance->msix_vectors = min(instance->msix_vectors,
4779 (unsigned int)num_online_cpus());
4780 for (i = 0; i < instance->msix_vectors; i++)
4781 instance->msixentry[i].entry = i;
4782 i = pci_enable_msix_range(instance->pdev, instance->msixentry,
4783 1, instance->msix_vectors);
4784 if (i > 0)
4785 instance->msix_vectors = i;
4786 else
4787 instance->msix_vectors = 0;
4788 }
4789
4790 dev_info(&instance->pdev->dev,
4791 "firmware supports msix\t: (%d)", fw_msix_count);
4792 dev_info(&instance->pdev->dev,
4793 "current msix/online cpus\t: (%d/%d)\n",
4794 instance->msix_vectors, (unsigned int)num_online_cpus());
4795
4796 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
4797 (unsigned long)instance);
4798
4799 if (instance->msix_vectors ?
4800 megasas_setup_irqs_msix(instance, 1) :
4801 megasas_setup_irqs_ioapic(instance))
4802 goto fail_setup_irqs;
4803
4804 instance->ctrl_info = kzalloc(sizeof(struct megasas_ctrl_info),
4805 GFP_KERNEL);
4806 if (instance->ctrl_info == NULL)
4807 goto fail_init_adapter;
4808
4809 /*
4810 * Below are default value for legacy Firmware.
4811 * non-fusion based controllers
4812 */
4813 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
4814 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
4815 /* Get operational params, sge flags, send init cmd to controller */
4816 if (instance->instancet->init_adapter(instance))
4817 goto fail_init_adapter;
4818
4819
4820 instance->instancet->enable_intr(instance);
4821
4822 dev_err(&instance->pdev->dev, "INIT adapter done\n");
4823
4824 megasas_setup_jbod_map(instance);
4825
4826 /** for passthrough
4827 * the following function will get the PD LIST.
4828 */
4829 memset(instance->pd_list, 0,
4830 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)));
4831 if (megasas_get_pd_list(instance) < 0) {
4832 dev_err(&instance->pdev->dev, "failed to get PD list\n");
4833 goto fail_get_pd_list;
4834 }
4835
4836 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
4837 if (megasas_ld_list_query(instance,
4838 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
4839 megasas_get_ld_list(instance);
4840
4841 /*
4842 * Compute the max allowed sectors per IO: The controller info has two
4843 * limits on max sectors. Driver should use the minimum of these two.
4844 *
4845 * 1 << stripe_sz_ops.min = max sectors per strip
4846 *
4847 * Note that older firmwares ( < FW ver 30) didn't report information
4848 * to calculate max_sectors_1. So the number ended up as zero always.
4849 */
4850 tmp_sectors = 0;
4851 ctrl_info = instance->ctrl_info;
4852
4853 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
4854 le16_to_cpu(ctrl_info->max_strips_per_io);
4855 max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size);
4856
4857 tmp_sectors = min_t(u32, max_sectors_1, max_sectors_2);
4858
4859 instance->mpio = ctrl_info->adapterOperations2.mpio;
4860 instance->UnevenSpanSupport =
4861 ctrl_info->adapterOperations2.supportUnevenSpans;
4862 if (instance->UnevenSpanSupport) {
4863 struct fusion_context *fusion = instance->ctrl_context;
4864 if (MR_ValidateMapInfo(instance))
4865 fusion->fast_path_io = 1;
4866 else
4867 fusion->fast_path_io = 0;
4868
4869 }
4870 if (ctrl_info->host_interface.SRIOV) {
4871 instance->requestorId = ctrl_info->iov.requestorId;
4872 if (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) {
4873 if (!ctrl_info->adapterOperations2.activePassive)
4874 instance->PlasmaFW111 = 1;
4875
4876 dev_info(&instance->pdev->dev, "SR-IOV: firmware type: %s\n",
4877 instance->PlasmaFW111 ? "1.11" : "new");
4878
4879 if (instance->PlasmaFW111) {
4880 iovPtr = (struct IOV_111 *)
4881 ((unsigned char *)ctrl_info + IOV_111_OFFSET);
4882 instance->requestorId = iovPtr->requestorId;
4883 }
4884 }
4885 dev_info(&instance->pdev->dev, "SRIOV: VF requestorId %d\n",
4886 instance->requestorId);
4887 }
4888
4889 instance->crash_dump_fw_support =
4890 ctrl_info->adapterOperations3.supportCrashDump;
4891 instance->crash_dump_drv_support =
4892 (instance->crash_dump_fw_support &&
4893 instance->crash_dump_buf);
4894 if (instance->crash_dump_drv_support)
4895 megasas_set_crash_dump_params(instance,
4896 MR_CRASH_BUF_TURN_OFF);
4897
4898 else {
4899 if (instance->crash_dump_buf)
4900 pci_free_consistent(instance->pdev,
4901 CRASH_DMA_BUF_SIZE,
4902 instance->crash_dump_buf,
4903 instance->crash_dump_h);
4904 instance->crash_dump_buf = NULL;
4905 }
4906
4907
4908 dev_info(&instance->pdev->dev,
4909 "pci id\t\t: (0x%04x)/(0x%04x)/(0x%04x)/(0x%04x)\n",
4910 le16_to_cpu(ctrl_info->pci.vendor_id),
4911 le16_to_cpu(ctrl_info->pci.device_id),
4912 le16_to_cpu(ctrl_info->pci.sub_vendor_id),
4913 le16_to_cpu(ctrl_info->pci.sub_device_id));
4914 dev_info(&instance->pdev->dev, "unevenspan support : %s\n",
4915 instance->UnevenSpanSupport ? "yes" : "no");
4916 dev_info(&instance->pdev->dev, "firmware crash dump : %s\n",
4917 instance->crash_dump_drv_support ? "yes" : "no");
4918 dev_info(&instance->pdev->dev, "jbod sync map : %s\n",
4919 instance->use_seqnum_jbod_fp ? "yes" : "no");
4920
4921
4922 instance->max_sectors_per_req = instance->max_num_sge *
4923 SGE_BUFFER_SIZE / 512;
4924 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
4925 instance->max_sectors_per_req = tmp_sectors;
4926
4927 /* Check for valid throttlequeuedepth module parameter */
4928 if (throttlequeuedepth &&
4929 throttlequeuedepth <= instance->max_scsi_cmds)
4930 instance->throttlequeuedepth = throttlequeuedepth;
4931 else
4932 instance->throttlequeuedepth =
4933 MEGASAS_THROTTLE_QUEUE_DEPTH;
4934
4935
4936 /* Launch SR-IOV heartbeat timer */
4937 if (instance->requestorId) {
4938 if (!megasas_sriov_start_heartbeat(instance, 1))
4939 megasas_start_timer(instance,
4940 &instance->sriov_heartbeat_timer,
4941 megasas_sriov_heartbeat_handler,
4942 MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
4943 else
4944 instance->skip_heartbeat_timer_del = 1;
4945 }
4946
4947 return 0;
4948
4949 fail_get_pd_list:
4950 instance->instancet->disable_intr(instance);
4951 fail_init_adapter:
4952 megasas_destroy_irqs(instance);
4953 fail_setup_irqs:
4954 if (instance->msix_vectors)
4955 pci_disable_msix(instance->pdev);
4956 instance->msix_vectors = 0;
4957 fail_ready_state:
4958 kfree(instance->ctrl_info);
4959 instance->ctrl_info = NULL;
4960 iounmap(instance->reg_set);
4961
4962 fail_ioremap:
4963 pci_release_selected_regions(instance->pdev, instance->bar);
4964
4965 return -EINVAL;
4966 }
4967
4968 /**
4969 * megasas_release_mfi - Reverses the FW initialization
4970 * @instance: Adapter soft state
4971 */
4972 static void megasas_release_mfi(struct megasas_instance *instance)
4973 {
4974 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
4975
4976 if (instance->reply_queue)
4977 pci_free_consistent(instance->pdev, reply_q_sz,
4978 instance->reply_queue, instance->reply_queue_h);
4979
4980 megasas_free_cmds(instance);
4981
4982 iounmap(instance->reg_set);
4983
4984 pci_release_selected_regions(instance->pdev, instance->bar);
4985 }
4986
4987 /**
4988 * megasas_get_seq_num - Gets latest event sequence numbers
4989 * @instance: Adapter soft state
4990 * @eli: FW event log sequence numbers information
4991 *
4992 * FW maintains a log of all events in a non-volatile area. Upper layers would
4993 * usually find out the latest sequence number of the events, the seq number at
4994 * the boot etc. They would "read" all the events below the latest seq number
4995 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
4996 * number), they would subsribe to AEN (asynchronous event notification) and
4997 * wait for the events to happen.
4998 */
4999 static int
5000 megasas_get_seq_num(struct megasas_instance *instance,
5001 struct megasas_evt_log_info *eli)
5002 {
5003 struct megasas_cmd *cmd;
5004 struct megasas_dcmd_frame *dcmd;
5005 struct megasas_evt_log_info *el_info;
5006 dma_addr_t el_info_h = 0;
5007
5008 cmd = megasas_get_cmd(instance);
5009
5010 if (!cmd) {
5011 return -ENOMEM;
5012 }
5013
5014 dcmd = &cmd->frame->dcmd;
5015 el_info = pci_alloc_consistent(instance->pdev,
5016 sizeof(struct megasas_evt_log_info),
5017 &el_info_h);
5018
5019 if (!el_info) {
5020 megasas_return_cmd(instance, cmd);
5021 return -ENOMEM;
5022 }
5023
5024 memset(el_info, 0, sizeof(*el_info));
5025 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5026
5027 dcmd->cmd = MFI_CMD_DCMD;
5028 dcmd->cmd_status = 0x0;
5029 dcmd->sge_count = 1;
5030 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
5031 dcmd->timeout = 0;
5032 dcmd->pad_0 = 0;
5033 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info));
5034 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO);
5035 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(el_info_h);
5036 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_log_info));
5037
5038 if (megasas_issue_blocked_cmd(instance, cmd, 30))
5039 dev_err(&instance->pdev->dev, "Command timedout"
5040 "from %s\n", __func__);
5041 else {
5042 /*
5043 * Copy the data back into callers buffer
5044 */
5045 eli->newest_seq_num = el_info->newest_seq_num;
5046 eli->oldest_seq_num = el_info->oldest_seq_num;
5047 eli->clear_seq_num = el_info->clear_seq_num;
5048 eli->shutdown_seq_num = el_info->shutdown_seq_num;
5049 eli->boot_seq_num = el_info->boot_seq_num;
5050 }
5051
5052 pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info),
5053 el_info, el_info_h);
5054
5055 megasas_return_cmd(instance, cmd);
5056
5057 return 0;
5058 }
5059
5060 /**
5061 * megasas_register_aen - Registers for asynchronous event notification
5062 * @instance: Adapter soft state
5063 * @seq_num: The starting sequence number
5064 * @class_locale: Class of the event
5065 *
5066 * This function subscribes for AEN for events beyond the @seq_num. It requests
5067 * to be notified if and only if the event is of type @class_locale
5068 */
5069 static int
5070 megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
5071 u32 class_locale_word)
5072 {
5073 int ret_val;
5074 struct megasas_cmd *cmd;
5075 struct megasas_dcmd_frame *dcmd;
5076 union megasas_evt_class_locale curr_aen;
5077 union megasas_evt_class_locale prev_aen;
5078
5079 /*
5080 * If there an AEN pending already (aen_cmd), check if the
5081 * class_locale of that pending AEN is inclusive of the new
5082 * AEN request we currently have. If it is, then we don't have
5083 * to do anything. In other words, whichever events the current
5084 * AEN request is subscribing to, have already been subscribed
5085 * to.
5086 *
5087 * If the old_cmd is _not_ inclusive, then we have to abort
5088 * that command, form a class_locale that is superset of both
5089 * old and current and re-issue to the FW
5090 */
5091
5092 curr_aen.word = class_locale_word;
5093
5094 if (instance->aen_cmd) {
5095
5096 prev_aen.word =
5097 le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]);
5098
5099 /*
5100 * A class whose enum value is smaller is inclusive of all
5101 * higher values. If a PROGRESS (= -1) was previously
5102 * registered, then a new registration requests for higher
5103 * classes need not be sent to FW. They are automatically
5104 * included.
5105 *
5106 * Locale numbers don't have such hierarchy. They are bitmap
5107 * values
5108 */
5109 if ((prev_aen.members.class <= curr_aen.members.class) &&
5110 !((prev_aen.members.locale & curr_aen.members.locale) ^
5111 curr_aen.members.locale)) {
5112 /*
5113 * Previously issued event registration includes
5114 * current request. Nothing to do.
5115 */
5116 return 0;
5117 } else {
5118 curr_aen.members.locale |= prev_aen.members.locale;
5119
5120 if (prev_aen.members.class < curr_aen.members.class)
5121 curr_aen.members.class = prev_aen.members.class;
5122
5123 instance->aen_cmd->abort_aen = 1;
5124 ret_val = megasas_issue_blocked_abort_cmd(instance,
5125 instance->
5126 aen_cmd, 30);
5127
5128 if (ret_val) {
5129 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to abort "
5130 "previous AEN command\n");
5131 return ret_val;
5132 }
5133 }
5134 }
5135
5136 cmd = megasas_get_cmd(instance);
5137
5138 if (!cmd)
5139 return -ENOMEM;
5140
5141 dcmd = &cmd->frame->dcmd;
5142
5143 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
5144
5145 /*
5146 * Prepare DCMD for aen registration
5147 */
5148 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5149
5150 dcmd->cmd = MFI_CMD_DCMD;
5151 dcmd->cmd_status = 0x0;
5152 dcmd->sge_count = 1;
5153 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
5154 dcmd->timeout = 0;
5155 dcmd->pad_0 = 0;
5156 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail));
5157 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT);
5158 dcmd->mbox.w[0] = cpu_to_le32(seq_num);
5159 instance->last_seq_num = seq_num;
5160 dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word);
5161 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->evt_detail_h);
5162 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_detail));
5163
5164 if (instance->aen_cmd != NULL) {
5165 megasas_return_cmd(instance, cmd);
5166 return 0;
5167 }
5168
5169 /*
5170 * Store reference to the cmd used to register for AEN. When an
5171 * application wants us to register for AEN, we have to abort this
5172 * cmd and re-register with a new EVENT LOCALE supplied by that app
5173 */
5174 instance->aen_cmd = cmd;
5175
5176 /*
5177 * Issue the aen registration frame
5178 */
5179 instance->instancet->issue_dcmd(instance, cmd);
5180
5181 return 0;
5182 }
5183
5184 /**
5185 * megasas_start_aen - Subscribes to AEN during driver load time
5186 * @instance: Adapter soft state
5187 */
5188 static int megasas_start_aen(struct megasas_instance *instance)
5189 {
5190 struct megasas_evt_log_info eli;
5191 union megasas_evt_class_locale class_locale;
5192
5193 /*
5194 * Get the latest sequence number from FW
5195 */
5196 memset(&eli, 0, sizeof(eli));
5197
5198 if (megasas_get_seq_num(instance, &eli))
5199 return -1;
5200
5201 /*
5202 * Register AEN with FW for latest sequence number plus 1
5203 */
5204 class_locale.members.reserved = 0;
5205 class_locale.members.locale = MR_EVT_LOCALE_ALL;
5206 class_locale.members.class = MR_EVT_CLASS_DEBUG;
5207
5208 return megasas_register_aen(instance,
5209 le32_to_cpu(eli.newest_seq_num) + 1,
5210 class_locale.word);
5211 }
5212
5213 /**
5214 * megasas_io_attach - Attaches this driver to SCSI mid-layer
5215 * @instance: Adapter soft state
5216 */
5217 static int megasas_io_attach(struct megasas_instance *instance)
5218 {
5219 struct Scsi_Host *host = instance->host;
5220
5221 /*
5222 * Export parameters required by SCSI mid-layer
5223 */
5224 host->irq = instance->pdev->irq;
5225 host->unique_id = instance->unique_id;
5226 host->can_queue = instance->max_scsi_cmds;
5227 host->this_id = instance->init_id;
5228 host->sg_tablesize = instance->max_num_sge;
5229
5230 if (instance->fw_support_ieee)
5231 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
5232
5233 /*
5234 * Check if the module parameter value for max_sectors can be used
5235 */
5236 if (max_sectors && max_sectors < instance->max_sectors_per_req)
5237 instance->max_sectors_per_req = max_sectors;
5238 else {
5239 if (max_sectors) {
5240 if (((instance->pdev->device ==
5241 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
5242 (instance->pdev->device ==
5243 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
5244 (max_sectors <= MEGASAS_MAX_SECTORS)) {
5245 instance->max_sectors_per_req = max_sectors;
5246 } else {
5247 dev_info(&instance->pdev->dev, "max_sectors should be > 0"
5248 "and <= %d (or < 1MB for GEN2 controller)\n",
5249 instance->max_sectors_per_req);
5250 }
5251 }
5252 }
5253
5254 host->max_sectors = instance->max_sectors_per_req;
5255 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
5256 host->max_channel = MEGASAS_MAX_CHANNELS - 1;
5257 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
5258 host->max_lun = MEGASAS_MAX_LUN;
5259 host->max_cmd_len = 16;
5260
5261 /* Fusion only supports host reset */
5262 if (instance->ctrl_context) {
5263 host->hostt->eh_device_reset_handler = NULL;
5264 host->hostt->eh_bus_reset_handler = NULL;
5265 }
5266
5267 /*
5268 * Notify the mid-layer about the new controller
5269 */
5270 if (scsi_add_host(host, &instance->pdev->dev)) {
5271 dev_err(&instance->pdev->dev,
5272 "Failed to add host from %s %d\n",
5273 __func__, __LINE__);
5274 return -ENODEV;
5275 }
5276
5277 return 0;
5278 }
5279
5280 static int
5281 megasas_set_dma_mask(struct pci_dev *pdev)
5282 {
5283 /*
5284 * All our controllers are capable of performing 64-bit DMA
5285 */
5286 if (IS_DMA64) {
5287 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) {
5288
5289 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
5290 goto fail_set_dma_mask;
5291 }
5292 } else {
5293 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
5294 goto fail_set_dma_mask;
5295 }
5296 /*
5297 * Ensure that all data structures are allocated in 32-bit
5298 * memory.
5299 */
5300 if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) {
5301 /* Try 32bit DMA mask and 32 bit Consistent dma mask */
5302 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))
5303 && !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
5304 dev_info(&pdev->dev, "set 32bit DMA mask"
5305 "and 32 bit consistent mask\n");
5306 else
5307 goto fail_set_dma_mask;
5308 }
5309
5310 return 0;
5311
5312 fail_set_dma_mask:
5313 return 1;
5314 }
5315
5316 /**
5317 * megasas_probe_one - PCI hotplug entry point
5318 * @pdev: PCI device structure
5319 * @id: PCI ids of supported hotplugged adapter
5320 */
5321 static int megasas_probe_one(struct pci_dev *pdev,
5322 const struct pci_device_id *id)
5323 {
5324 int rval, pos;
5325 struct Scsi_Host *host;
5326 struct megasas_instance *instance;
5327 u16 control = 0;
5328 struct fusion_context *fusion = NULL;
5329
5330 /* Reset MSI-X in the kdump kernel */
5331 if (reset_devices) {
5332 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
5333 if (pos) {
5334 pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS,
5335 &control);
5336 if (control & PCI_MSIX_FLAGS_ENABLE) {
5337 dev_info(&pdev->dev, "resetting MSI-X\n");
5338 pci_write_config_word(pdev,
5339 pos + PCI_MSIX_FLAGS,
5340 control &
5341 ~PCI_MSIX_FLAGS_ENABLE);
5342 }
5343 }
5344 }
5345
5346 /*
5347 * PCI prepping: enable device set bus mastering and dma mask
5348 */
5349 rval = pci_enable_device_mem(pdev);
5350
5351 if (rval) {
5352 return rval;
5353 }
5354
5355 pci_set_master(pdev);
5356
5357 if (megasas_set_dma_mask(pdev))
5358 goto fail_set_dma_mask;
5359
5360 host = scsi_host_alloc(&megasas_template,
5361 sizeof(struct megasas_instance));
5362
5363 if (!host) {
5364 dev_printk(KERN_DEBUG, &pdev->dev, "scsi_host_alloc failed\n");
5365 goto fail_alloc_instance;
5366 }
5367
5368 instance = (struct megasas_instance *)host->hostdata;
5369 memset(instance, 0, sizeof(*instance));
5370 atomic_set(&instance->fw_reset_no_pci_access, 0);
5371 instance->pdev = pdev;
5372
5373 switch (instance->pdev->device) {
5374 case PCI_DEVICE_ID_LSI_FUSION:
5375 case PCI_DEVICE_ID_LSI_PLASMA:
5376 case PCI_DEVICE_ID_LSI_INVADER:
5377 case PCI_DEVICE_ID_LSI_FURY:
5378 case PCI_DEVICE_ID_LSI_INTRUDER:
5379 case PCI_DEVICE_ID_LSI_INTRUDER_24:
5380 case PCI_DEVICE_ID_LSI_CUTLASS_52:
5381 case PCI_DEVICE_ID_LSI_CUTLASS_53:
5382 {
5383 instance->ctrl_context_pages =
5384 get_order(sizeof(struct fusion_context));
5385 instance->ctrl_context = (void *)__get_free_pages(GFP_KERNEL,
5386 instance->ctrl_context_pages);
5387 if (!instance->ctrl_context) {
5388 dev_printk(KERN_DEBUG, &pdev->dev, "Failed to allocate "
5389 "memory for Fusion context info\n");
5390 goto fail_alloc_dma_buf;
5391 }
5392 fusion = instance->ctrl_context;
5393 memset(fusion, 0,
5394 ((1 << PAGE_SHIFT) << instance->ctrl_context_pages));
5395 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
5396 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA))
5397 fusion->adapter_type = THUNDERBOLT_SERIES;
5398 else
5399 fusion->adapter_type = INVADER_SERIES;
5400 }
5401 break;
5402 default: /* For all other supported controllers */
5403
5404 instance->producer =
5405 pci_alloc_consistent(pdev, sizeof(u32),
5406 &instance->producer_h);
5407 instance->consumer =
5408 pci_alloc_consistent(pdev, sizeof(u32),
5409 &instance->consumer_h);
5410
5411 if (!instance->producer || !instance->consumer) {
5412 dev_printk(KERN_DEBUG, &pdev->dev, "Failed to allocate"
5413 "memory for producer, consumer\n");
5414 goto fail_alloc_dma_buf;
5415 }
5416
5417 *instance->producer = 0;
5418 *instance->consumer = 0;
5419 break;
5420 }
5421
5422 instance->system_info_buf = pci_zalloc_consistent(pdev,
5423 sizeof(struct MR_DRV_SYSTEM_INFO),
5424 &instance->system_info_h);
5425
5426 if (!instance->system_info_buf)
5427 dev_info(&instance->pdev->dev, "Can't allocate system info buffer\n");
5428
5429 /* Crash dump feature related initialisation*/
5430 instance->drv_buf_index = 0;
5431 instance->drv_buf_alloc = 0;
5432 instance->crash_dump_fw_support = 0;
5433 instance->crash_dump_app_support = 0;
5434 instance->fw_crash_state = UNAVAILABLE;
5435 spin_lock_init(&instance->crashdump_lock);
5436 instance->crash_dump_buf = NULL;
5437
5438 if (!reset_devices)
5439 instance->crash_dump_buf = pci_alloc_consistent(pdev,
5440 CRASH_DMA_BUF_SIZE,
5441 &instance->crash_dump_h);
5442 if (!instance->crash_dump_buf)
5443 dev_err(&pdev->dev, "Can't allocate Firmware "
5444 "crash dump DMA buffer\n");
5445
5446 megasas_poll_wait_aen = 0;
5447 instance->flag_ieee = 0;
5448 instance->ev = NULL;
5449 instance->issuepend_done = 1;
5450 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
5451 instance->is_imr = 0;
5452
5453 instance->evt_detail = pci_alloc_consistent(pdev,
5454 sizeof(struct
5455 megasas_evt_detail),
5456 &instance->evt_detail_h);
5457
5458 if (!instance->evt_detail) {
5459 dev_printk(KERN_DEBUG, &pdev->dev, "Failed to allocate memory for "
5460 "event detail structure\n");
5461 goto fail_alloc_dma_buf;
5462 }
5463
5464 /*
5465 * Initialize locks and queues
5466 */
5467 INIT_LIST_HEAD(&instance->cmd_pool);
5468 INIT_LIST_HEAD(&instance->internal_reset_pending_q);
5469
5470 atomic_set(&instance->fw_outstanding,0);
5471
5472 init_waitqueue_head(&instance->int_cmd_wait_q);
5473 init_waitqueue_head(&instance->abort_cmd_wait_q);
5474
5475 spin_lock_init(&instance->mfi_pool_lock);
5476 spin_lock_init(&instance->hba_lock);
5477 spin_lock_init(&instance->completion_lock);
5478
5479 mutex_init(&instance->aen_mutex);
5480 mutex_init(&instance->reset_mutex);
5481
5482 /*
5483 * Initialize PCI related and misc parameters
5484 */
5485 instance->host = host;
5486 instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
5487 instance->init_id = MEGASAS_DEFAULT_INIT_ID;
5488 instance->ctrl_info = NULL;
5489
5490
5491 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
5492 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY))
5493 instance->flag_ieee = 1;
5494
5495 megasas_dbg_lvl = 0;
5496 instance->flag = 0;
5497 instance->unload = 1;
5498 instance->last_time = 0;
5499 instance->disableOnlineCtrlReset = 1;
5500 instance->UnevenSpanSupport = 0;
5501
5502 if (instance->ctrl_context) {
5503 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
5504 INIT_WORK(&instance->crash_init, megasas_fusion_crash_dump_wq);
5505 } else
5506 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
5507
5508 /*
5509 * Initialize MFI Firmware
5510 */
5511 if (megasas_init_fw(instance))
5512 goto fail_init_mfi;
5513
5514 if (instance->requestorId) {
5515 if (instance->PlasmaFW111) {
5516 instance->vf_affiliation_111 =
5517 pci_alloc_consistent(pdev, sizeof(struct MR_LD_VF_AFFILIATION_111),
5518 &instance->vf_affiliation_111_h);
5519 if (!instance->vf_affiliation_111)
5520 dev_warn(&pdev->dev, "Can't allocate "
5521 "memory for VF affiliation buffer\n");
5522 } else {
5523 instance->vf_affiliation =
5524 pci_alloc_consistent(pdev,
5525 (MAX_LOGICAL_DRIVES + 1) *
5526 sizeof(struct MR_LD_VF_AFFILIATION),
5527 &instance->vf_affiliation_h);
5528 if (!instance->vf_affiliation)
5529 dev_warn(&pdev->dev, "Can't allocate "
5530 "memory for VF affiliation buffer\n");
5531 }
5532 }
5533
5534 /*
5535 * Store instance in PCI softstate
5536 */
5537 pci_set_drvdata(pdev, instance);
5538
5539 /*
5540 * Add this controller to megasas_mgmt_info structure so that it
5541 * can be exported to management applications
5542 */
5543 megasas_mgmt_info.count++;
5544 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
5545 megasas_mgmt_info.max_index++;
5546
5547 /*
5548 * Register with SCSI mid-layer
5549 */
5550 if (megasas_io_attach(instance))
5551 goto fail_io_attach;
5552
5553 instance->unload = 0;
5554 /*
5555 * Trigger SCSI to scan our drives
5556 */
5557 scsi_scan_host(host);
5558
5559 /*
5560 * Initiate AEN (Asynchronous Event Notification)
5561 */
5562 if (megasas_start_aen(instance)) {
5563 dev_printk(KERN_DEBUG, &pdev->dev, "start aen failed\n");
5564 goto fail_start_aen;
5565 }
5566
5567 /* Get current SR-IOV LD/VF affiliation */
5568 if (instance->requestorId)
5569 megasas_get_ld_vf_affiliation(instance, 1);
5570
5571 return 0;
5572
5573 fail_start_aen:
5574 fail_io_attach:
5575 megasas_mgmt_info.count--;
5576 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
5577 megasas_mgmt_info.max_index--;
5578
5579 instance->instancet->disable_intr(instance);
5580 megasas_destroy_irqs(instance);
5581
5582 if (instance->ctrl_context)
5583 megasas_release_fusion(instance);
5584 else
5585 megasas_release_mfi(instance);
5586 if (instance->msix_vectors)
5587 pci_disable_msix(instance->pdev);
5588 fail_init_mfi:
5589 fail_alloc_dma_buf:
5590 if (instance->evt_detail)
5591 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
5592 instance->evt_detail,
5593 instance->evt_detail_h);
5594
5595 if (instance->producer)
5596 pci_free_consistent(pdev, sizeof(u32), instance->producer,
5597 instance->producer_h);
5598 if (instance->consumer)
5599 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
5600 instance->consumer_h);
5601 scsi_host_put(host);
5602
5603 fail_alloc_instance:
5604 fail_set_dma_mask:
5605 pci_disable_device(pdev);
5606
5607 return -ENODEV;
5608 }
5609
5610 /**
5611 * megasas_flush_cache - Requests FW to flush all its caches
5612 * @instance: Adapter soft state
5613 */
5614 static void megasas_flush_cache(struct megasas_instance *instance)
5615 {
5616 struct megasas_cmd *cmd;
5617 struct megasas_dcmd_frame *dcmd;
5618
5619 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
5620 return;
5621
5622 cmd = megasas_get_cmd(instance);
5623
5624 if (!cmd)
5625 return;
5626
5627 dcmd = &cmd->frame->dcmd;
5628
5629 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5630
5631 dcmd->cmd = MFI_CMD_DCMD;
5632 dcmd->cmd_status = 0x0;
5633 dcmd->sge_count = 0;
5634 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
5635 dcmd->timeout = 0;
5636 dcmd->pad_0 = 0;
5637 dcmd->data_xfer_len = 0;
5638 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH);
5639 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
5640
5641 if (megasas_issue_blocked_cmd(instance, cmd, 30))
5642 dev_err(&instance->pdev->dev, "Command timedout"
5643 " from %s\n", __func__);
5644
5645 megasas_return_cmd(instance, cmd);
5646 }
5647
5648 /**
5649 * megasas_shutdown_controller - Instructs FW to shutdown the controller
5650 * @instance: Adapter soft state
5651 * @opcode: Shutdown/Hibernate
5652 */
5653 static void megasas_shutdown_controller(struct megasas_instance *instance,
5654 u32 opcode)
5655 {
5656 struct megasas_cmd *cmd;
5657 struct megasas_dcmd_frame *dcmd;
5658
5659 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
5660 return;
5661
5662 cmd = megasas_get_cmd(instance);
5663
5664 if (!cmd)
5665 return;
5666
5667 if (instance->aen_cmd)
5668 megasas_issue_blocked_abort_cmd(instance,
5669 instance->aen_cmd, MEGASAS_BLOCKED_CMD_TIMEOUT);
5670 if (instance->map_update_cmd)
5671 megasas_issue_blocked_abort_cmd(instance,
5672 instance->map_update_cmd, MEGASAS_BLOCKED_CMD_TIMEOUT);
5673 if (instance->jbod_seq_cmd)
5674 megasas_issue_blocked_abort_cmd(instance,
5675 instance->jbod_seq_cmd, MEGASAS_BLOCKED_CMD_TIMEOUT);
5676
5677 dcmd = &cmd->frame->dcmd;
5678
5679 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5680
5681 dcmd->cmd = MFI_CMD_DCMD;
5682 dcmd->cmd_status = 0x0;
5683 dcmd->sge_count = 0;
5684 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
5685 dcmd->timeout = 0;
5686 dcmd->pad_0 = 0;
5687 dcmd->data_xfer_len = 0;
5688 dcmd->opcode = cpu_to_le32(opcode);
5689
5690 if (megasas_issue_blocked_cmd(instance, cmd, 30))
5691 dev_err(&instance->pdev->dev, "Command timedout"
5692 "from %s\n", __func__);
5693
5694 megasas_return_cmd(instance, cmd);
5695 }
5696
5697 #ifdef CONFIG_PM
5698 /**
5699 * megasas_suspend - driver suspend entry point
5700 * @pdev: PCI device structure
5701 * @state: PCI power state to suspend routine
5702 */
5703 static int
5704 megasas_suspend(struct pci_dev *pdev, pm_message_t state)
5705 {
5706 struct Scsi_Host *host;
5707 struct megasas_instance *instance;
5708
5709 instance = pci_get_drvdata(pdev);
5710 host = instance->host;
5711 instance->unload = 1;
5712
5713 /* Shutdown SR-IOV heartbeat timer */
5714 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
5715 del_timer_sync(&instance->sriov_heartbeat_timer);
5716
5717 megasas_flush_cache(instance);
5718 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
5719
5720 /* cancel the delayed work if this work still in queue */
5721 if (instance->ev != NULL) {
5722 struct megasas_aen_event *ev = instance->ev;
5723 cancel_delayed_work_sync(&ev->hotplug_work);
5724 instance->ev = NULL;
5725 }
5726
5727 tasklet_kill(&instance->isr_tasklet);
5728
5729 pci_set_drvdata(instance->pdev, instance);
5730 instance->instancet->disable_intr(instance);
5731
5732 megasas_destroy_irqs(instance);
5733
5734 if (instance->msix_vectors)
5735 pci_disable_msix(instance->pdev);
5736
5737 pci_save_state(pdev);
5738 pci_disable_device(pdev);
5739
5740 pci_set_power_state(pdev, pci_choose_state(pdev, state));
5741
5742 return 0;
5743 }
5744
5745 /**
5746 * megasas_resume- driver resume entry point
5747 * @pdev: PCI device structure
5748 */
5749 static int
5750 megasas_resume(struct pci_dev *pdev)
5751 {
5752 int rval;
5753 struct Scsi_Host *host;
5754 struct megasas_instance *instance;
5755
5756 instance = pci_get_drvdata(pdev);
5757 host = instance->host;
5758 pci_set_power_state(pdev, PCI_D0);
5759 pci_enable_wake(pdev, PCI_D0, 0);
5760 pci_restore_state(pdev);
5761
5762 /*
5763 * PCI prepping: enable device set bus mastering and dma mask
5764 */
5765 rval = pci_enable_device_mem(pdev);
5766
5767 if (rval) {
5768 dev_err(&pdev->dev, "Enable device failed\n");
5769 return rval;
5770 }
5771
5772 pci_set_master(pdev);
5773
5774 if (megasas_set_dma_mask(pdev))
5775 goto fail_set_dma_mask;
5776
5777 /*
5778 * Initialize MFI Firmware
5779 */
5780
5781 atomic_set(&instance->fw_outstanding, 0);
5782
5783 /*
5784 * We expect the FW state to be READY
5785 */
5786 if (megasas_transition_to_ready(instance, 0))
5787 goto fail_ready_state;
5788
5789 /* Now re-enable MSI-X */
5790 if (instance->msix_vectors &&
5791 pci_enable_msix_exact(instance->pdev, instance->msixentry,
5792 instance->msix_vectors))
5793 goto fail_reenable_msix;
5794
5795 if (instance->ctrl_context) {
5796 megasas_reset_reply_desc(instance);
5797 if (megasas_ioc_init_fusion(instance)) {
5798 megasas_free_cmds(instance);
5799 megasas_free_cmds_fusion(instance);
5800 goto fail_init_mfi;
5801 }
5802 if (!megasas_get_map_info(instance))
5803 megasas_sync_map_info(instance);
5804 } else {
5805 *instance->producer = 0;
5806 *instance->consumer = 0;
5807 if (megasas_issue_init_mfi(instance))
5808 goto fail_init_mfi;
5809 }
5810
5811 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
5812 (unsigned long)instance);
5813
5814 if (instance->msix_vectors ?
5815 megasas_setup_irqs_msix(instance, 0) :
5816 megasas_setup_irqs_ioapic(instance))
5817 goto fail_init_mfi;
5818
5819 /* Re-launch SR-IOV heartbeat timer */
5820 if (instance->requestorId) {
5821 if (!megasas_sriov_start_heartbeat(instance, 0))
5822 megasas_start_timer(instance,
5823 &instance->sriov_heartbeat_timer,
5824 megasas_sriov_heartbeat_handler,
5825 MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
5826 else {
5827 instance->skip_heartbeat_timer_del = 1;
5828 goto fail_init_mfi;
5829 }
5830 }
5831
5832 instance->instancet->enable_intr(instance);
5833 megasas_setup_jbod_map(instance);
5834 instance->unload = 0;
5835
5836 /*
5837 * Initiate AEN (Asynchronous Event Notification)
5838 */
5839 if (megasas_start_aen(instance))
5840 dev_err(&instance->pdev->dev, "Start AEN failed\n");
5841
5842 return 0;
5843
5844 fail_init_mfi:
5845 if (instance->evt_detail)
5846 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
5847 instance->evt_detail,
5848 instance->evt_detail_h);
5849
5850 if (instance->producer)
5851 pci_free_consistent(pdev, sizeof(u32), instance->producer,
5852 instance->producer_h);
5853 if (instance->consumer)
5854 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
5855 instance->consumer_h);
5856 scsi_host_put(host);
5857
5858 fail_set_dma_mask:
5859 fail_ready_state:
5860 fail_reenable_msix:
5861
5862 pci_disable_device(pdev);
5863
5864 return -ENODEV;
5865 }
5866 #else
5867 #define megasas_suspend NULL
5868 #define megasas_resume NULL
5869 #endif
5870
5871 /**
5872 * megasas_detach_one - PCI hot"un"plug entry point
5873 * @pdev: PCI device structure
5874 */
5875 static void megasas_detach_one(struct pci_dev *pdev)
5876 {
5877 int i;
5878 struct Scsi_Host *host;
5879 struct megasas_instance *instance;
5880 struct fusion_context *fusion;
5881 u32 pd_seq_map_sz;
5882
5883 instance = pci_get_drvdata(pdev);
5884 instance->unload = 1;
5885 host = instance->host;
5886 fusion = instance->ctrl_context;
5887
5888 /* Shutdown SR-IOV heartbeat timer */
5889 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
5890 del_timer_sync(&instance->sriov_heartbeat_timer);
5891
5892 if (instance->fw_crash_state != UNAVAILABLE)
5893 megasas_free_host_crash_buffer(instance);
5894 scsi_remove_host(instance->host);
5895 megasas_flush_cache(instance);
5896 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
5897
5898 /* cancel the delayed work if this work still in queue*/
5899 if (instance->ev != NULL) {
5900 struct megasas_aen_event *ev = instance->ev;
5901 cancel_delayed_work_sync(&ev->hotplug_work);
5902 instance->ev = NULL;
5903 }
5904
5905 /* cancel all wait events */
5906 wake_up_all(&instance->int_cmd_wait_q);
5907
5908 tasklet_kill(&instance->isr_tasklet);
5909
5910 /*
5911 * Take the instance off the instance array. Note that we will not
5912 * decrement the max_index. We let this array be sparse array
5913 */
5914 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
5915 if (megasas_mgmt_info.instance[i] == instance) {
5916 megasas_mgmt_info.count--;
5917 megasas_mgmt_info.instance[i] = NULL;
5918
5919 break;
5920 }
5921 }
5922
5923 instance->instancet->disable_intr(instance);
5924
5925 megasas_destroy_irqs(instance);
5926
5927 if (instance->msix_vectors)
5928 pci_disable_msix(instance->pdev);
5929
5930 if (instance->ctrl_context) {
5931 megasas_release_fusion(instance);
5932 pd_seq_map_sz = sizeof(struct MR_PD_CFG_SEQ_NUM_SYNC) +
5933 (sizeof(struct MR_PD_CFG_SEQ) *
5934 (MAX_PHYSICAL_DEVICES - 1));
5935 for (i = 0; i < 2 ; i++) {
5936 if (fusion->ld_map[i])
5937 dma_free_coherent(&instance->pdev->dev,
5938 fusion->max_map_sz,
5939 fusion->ld_map[i],
5940 fusion->ld_map_phys[i]);
5941 if (fusion->ld_drv_map[i])
5942 free_pages((ulong)fusion->ld_drv_map[i],
5943 fusion->drv_map_pages);
5944 if (fusion->pd_seq_sync)
5945 dma_free_coherent(&instance->pdev->dev,
5946 pd_seq_map_sz,
5947 fusion->pd_seq_sync[i],
5948 fusion->pd_seq_phys[i]);
5949 }
5950 free_pages((ulong)instance->ctrl_context,
5951 instance->ctrl_context_pages);
5952 } else {
5953 megasas_release_mfi(instance);
5954 pci_free_consistent(pdev, sizeof(u32),
5955 instance->producer,
5956 instance->producer_h);
5957 pci_free_consistent(pdev, sizeof(u32),
5958 instance->consumer,
5959 instance->consumer_h);
5960 }
5961
5962 kfree(instance->ctrl_info);
5963
5964 if (instance->evt_detail)
5965 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
5966 instance->evt_detail, instance->evt_detail_h);
5967
5968 if (instance->vf_affiliation)
5969 pci_free_consistent(pdev, (MAX_LOGICAL_DRIVES + 1) *
5970 sizeof(struct MR_LD_VF_AFFILIATION),
5971 instance->vf_affiliation,
5972 instance->vf_affiliation_h);
5973
5974 if (instance->vf_affiliation_111)
5975 pci_free_consistent(pdev,
5976 sizeof(struct MR_LD_VF_AFFILIATION_111),
5977 instance->vf_affiliation_111,
5978 instance->vf_affiliation_111_h);
5979
5980 if (instance->hb_host_mem)
5981 pci_free_consistent(pdev, sizeof(struct MR_CTRL_HB_HOST_MEM),
5982 instance->hb_host_mem,
5983 instance->hb_host_mem_h);
5984
5985 if (instance->crash_dump_buf)
5986 pci_free_consistent(pdev, CRASH_DMA_BUF_SIZE,
5987 instance->crash_dump_buf, instance->crash_dump_h);
5988
5989 if (instance->system_info_buf)
5990 pci_free_consistent(pdev, sizeof(struct MR_DRV_SYSTEM_INFO),
5991 instance->system_info_buf, instance->system_info_h);
5992
5993 scsi_host_put(host);
5994
5995 pci_disable_device(pdev);
5996 }
5997
5998 /**
5999 * megasas_shutdown - Shutdown entry point
6000 * @device: Generic device structure
6001 */
6002 static void megasas_shutdown(struct pci_dev *pdev)
6003 {
6004 struct megasas_instance *instance = pci_get_drvdata(pdev);
6005
6006 instance->unload = 1;
6007 megasas_flush_cache(instance);
6008 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
6009 instance->instancet->disable_intr(instance);
6010 megasas_destroy_irqs(instance);
6011
6012 if (instance->msix_vectors)
6013 pci_disable_msix(instance->pdev);
6014 }
6015
6016 /**
6017 * megasas_mgmt_open - char node "open" entry point
6018 */
6019 static int megasas_mgmt_open(struct inode *inode, struct file *filep)
6020 {
6021 /*
6022 * Allow only those users with admin rights
6023 */
6024 if (!capable(CAP_SYS_ADMIN))
6025 return -EACCES;
6026
6027 return 0;
6028 }
6029
6030 /**
6031 * megasas_mgmt_fasync - Async notifier registration from applications
6032 *
6033 * This function adds the calling process to a driver global queue. When an
6034 * event occurs, SIGIO will be sent to all processes in this queue.
6035 */
6036 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
6037 {
6038 int rc;
6039
6040 mutex_lock(&megasas_async_queue_mutex);
6041
6042 rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
6043
6044 mutex_unlock(&megasas_async_queue_mutex);
6045
6046 if (rc >= 0) {
6047 /* For sanity check when we get ioctl */
6048 filep->private_data = filep;
6049 return 0;
6050 }
6051
6052 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
6053
6054 return rc;
6055 }
6056
6057 /**
6058 * megasas_mgmt_poll - char node "poll" entry point
6059 * */
6060 static unsigned int megasas_mgmt_poll(struct file *file, poll_table *wait)
6061 {
6062 unsigned int mask;
6063 unsigned long flags;
6064
6065 poll_wait(file, &megasas_poll_wait, wait);
6066 spin_lock_irqsave(&poll_aen_lock, flags);
6067 if (megasas_poll_wait_aen)
6068 mask = (POLLIN | POLLRDNORM);
6069 else
6070 mask = 0;
6071 megasas_poll_wait_aen = 0;
6072 spin_unlock_irqrestore(&poll_aen_lock, flags);
6073 return mask;
6074 }
6075
6076 /*
6077 * megasas_set_crash_dump_params_ioctl:
6078 * Send CRASH_DUMP_MODE DCMD to all controllers
6079 * @cmd: MFI command frame
6080 */
6081
6082 static int megasas_set_crash_dump_params_ioctl(struct megasas_cmd *cmd)
6083 {
6084 struct megasas_instance *local_instance;
6085 int i, error = 0;
6086 int crash_support;
6087
6088 crash_support = cmd->frame->dcmd.mbox.w[0];
6089
6090 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
6091 local_instance = megasas_mgmt_info.instance[i];
6092 if (local_instance && local_instance->crash_dump_drv_support) {
6093 if ((local_instance->adprecovery ==
6094 MEGASAS_HBA_OPERATIONAL) &&
6095 !megasas_set_crash_dump_params(local_instance,
6096 crash_support)) {
6097 local_instance->crash_dump_app_support =
6098 crash_support;
6099 dev_info(&local_instance->pdev->dev,
6100 "Application firmware crash "
6101 "dump mode set success\n");
6102 error = 0;
6103 } else {
6104 dev_info(&local_instance->pdev->dev,
6105 "Application firmware crash "
6106 "dump mode set failed\n");
6107 error = -1;
6108 }
6109 }
6110 }
6111 return error;
6112 }
6113
6114 /**
6115 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW
6116 * @instance: Adapter soft state
6117 * @argp: User's ioctl packet
6118 */
6119 static int
6120 megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
6121 struct megasas_iocpacket __user * user_ioc,
6122 struct megasas_iocpacket *ioc)
6123 {
6124 struct megasas_sge32 *kern_sge32;
6125 struct megasas_cmd *cmd;
6126 void *kbuff_arr[MAX_IOCTL_SGE];
6127 dma_addr_t buf_handle = 0;
6128 int error = 0, i;
6129 void *sense = NULL;
6130 dma_addr_t sense_handle;
6131 unsigned long *sense_ptr;
6132
6133 memset(kbuff_arr, 0, sizeof(kbuff_arr));
6134
6135 if (ioc->sge_count > MAX_IOCTL_SGE) {
6136 dev_printk(KERN_DEBUG, &instance->pdev->dev, "SGE count [%d] > max limit [%d]\n",
6137 ioc->sge_count, MAX_IOCTL_SGE);
6138 return -EINVAL;
6139 }
6140
6141 cmd = megasas_get_cmd(instance);
6142 if (!cmd) {
6143 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to get a cmd packet\n");
6144 return -ENOMEM;
6145 }
6146
6147 /*
6148 * User's IOCTL packet has 2 frames (maximum). Copy those two
6149 * frames into our cmd's frames. cmd->frame's context will get
6150 * overwritten when we copy from user's frames. So set that value
6151 * alone separately
6152 */
6153 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
6154 cmd->frame->hdr.context = cpu_to_le32(cmd->index);
6155 cmd->frame->hdr.pad_0 = 0;
6156 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_IEEE |
6157 MFI_FRAME_SGL64 |
6158 MFI_FRAME_SENSE64));
6159
6160 if (cmd->frame->dcmd.opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) {
6161 error = megasas_set_crash_dump_params_ioctl(cmd);
6162 megasas_return_cmd(instance, cmd);
6163 return error;
6164 }
6165
6166 /*
6167 * The management interface between applications and the fw uses
6168 * MFI frames. E.g, RAID configuration changes, LD property changes
6169 * etc are accomplishes through different kinds of MFI frames. The
6170 * driver needs to care only about substituting user buffers with
6171 * kernel buffers in SGLs. The location of SGL is embedded in the
6172 * struct iocpacket itself.
6173 */
6174 kern_sge32 = (struct megasas_sge32 *)
6175 ((unsigned long)cmd->frame + ioc->sgl_off);
6176
6177 /*
6178 * For each user buffer, create a mirror buffer and copy in
6179 */
6180 for (i = 0; i < ioc->sge_count; i++) {
6181 if (!ioc->sgl[i].iov_len)
6182 continue;
6183
6184 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
6185 ioc->sgl[i].iov_len,
6186 &buf_handle, GFP_KERNEL);
6187 if (!kbuff_arr[i]) {
6188 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Failed to alloc "
6189 "kernel SGL buffer for IOCTL\n");
6190 error = -ENOMEM;
6191 goto out;
6192 }
6193
6194 /*
6195 * We don't change the dma_coherent_mask, so
6196 * pci_alloc_consistent only returns 32bit addresses
6197 */
6198 kern_sge32[i].phys_addr = cpu_to_le32(buf_handle);
6199 kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
6200
6201 /*
6202 * We created a kernel buffer corresponding to the
6203 * user buffer. Now copy in from the user buffer
6204 */
6205 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
6206 (u32) (ioc->sgl[i].iov_len))) {
6207 error = -EFAULT;
6208 goto out;
6209 }
6210 }
6211
6212 if (ioc->sense_len) {
6213 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
6214 &sense_handle, GFP_KERNEL);
6215 if (!sense) {
6216 error = -ENOMEM;
6217 goto out;
6218 }
6219
6220 sense_ptr =
6221 (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off);
6222 *sense_ptr = cpu_to_le32(sense_handle);
6223 }
6224
6225 /*
6226 * Set the sync_cmd flag so that the ISR knows not to complete this
6227 * cmd to the SCSI mid-layer
6228 */
6229 cmd->sync_cmd = 1;
6230 megasas_issue_blocked_cmd(instance, cmd, 0);
6231 cmd->sync_cmd = 0;
6232
6233 if (instance->unload == 1) {
6234 dev_info(&instance->pdev->dev, "Driver unload is in progress "
6235 "don't submit data to application\n");
6236 goto out;
6237 }
6238 /*
6239 * copy out the kernel buffers to user buffers
6240 */
6241 for (i = 0; i < ioc->sge_count; i++) {
6242 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
6243 ioc->sgl[i].iov_len)) {
6244 error = -EFAULT;
6245 goto out;
6246 }
6247 }
6248
6249 /*
6250 * copy out the sense
6251 */
6252 if (ioc->sense_len) {
6253 /*
6254 * sense_ptr points to the location that has the user
6255 * sense buffer address
6256 */
6257 sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw +
6258 ioc->sense_off);
6259
6260 if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)),
6261 sense, ioc->sense_len)) {
6262 dev_err(&instance->pdev->dev, "Failed to copy out to user "
6263 "sense data\n");
6264 error = -EFAULT;
6265 goto out;
6266 }
6267 }
6268
6269 /*
6270 * copy the status codes returned by the fw
6271 */
6272 if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
6273 &cmd->frame->hdr.cmd_status, sizeof(u8))) {
6274 dev_printk(KERN_DEBUG, &instance->pdev->dev, "Error copying out cmd_status\n");
6275 error = -EFAULT;
6276 }
6277
6278 out:
6279 if (sense) {
6280 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
6281 sense, sense_handle);
6282 }
6283
6284 for (i = 0; i < ioc->sge_count; i++) {
6285 if (kbuff_arr[i])
6286 dma_free_coherent(&instance->pdev->dev,
6287 le32_to_cpu(kern_sge32[i].length),
6288 kbuff_arr[i],
6289 le32_to_cpu(kern_sge32[i].phys_addr));
6290 kbuff_arr[i] = NULL;
6291 }
6292
6293 megasas_return_cmd(instance, cmd);
6294 return error;
6295 }
6296
6297 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
6298 {
6299 struct megasas_iocpacket __user *user_ioc =
6300 (struct megasas_iocpacket __user *)arg;
6301 struct megasas_iocpacket *ioc;
6302 struct megasas_instance *instance;
6303 int error;
6304 int i;
6305 unsigned long flags;
6306 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
6307
6308 ioc = kmalloc(sizeof(*ioc), GFP_KERNEL);
6309 if (!ioc)
6310 return -ENOMEM;
6311
6312 if (copy_from_user(ioc, user_ioc, sizeof(*ioc))) {
6313 error = -EFAULT;
6314 goto out_kfree_ioc;
6315 }
6316
6317 instance = megasas_lookup_instance(ioc->host_no);
6318 if (!instance) {
6319 error = -ENODEV;
6320 goto out_kfree_ioc;
6321 }
6322
6323 /* Adjust ioctl wait time for VF mode */
6324 if (instance->requestorId)
6325 wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF;
6326
6327 /* Block ioctls in VF mode */
6328 if (instance->requestorId && !allow_vf_ioctls) {
6329 error = -ENODEV;
6330 goto out_kfree_ioc;
6331 }
6332
6333 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
6334 dev_err(&instance->pdev->dev, "Controller in crit error\n");
6335 error = -ENODEV;
6336 goto out_kfree_ioc;
6337 }
6338
6339 if (instance->unload == 1) {
6340 error = -ENODEV;
6341 goto out_kfree_ioc;
6342 }
6343
6344 if (down_interruptible(&instance->ioctl_sem)) {
6345 error = -ERESTARTSYS;
6346 goto out_kfree_ioc;
6347 }
6348
6349 for (i = 0; i < wait_time; i++) {
6350
6351 spin_lock_irqsave(&instance->hba_lock, flags);
6352 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
6353 spin_unlock_irqrestore(&instance->hba_lock, flags);
6354 break;
6355 }
6356 spin_unlock_irqrestore(&instance->hba_lock, flags);
6357
6358 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
6359 dev_notice(&instance->pdev->dev, "waiting"
6360 "for controller reset to finish\n");
6361 }
6362
6363 msleep(1000);
6364 }
6365
6366 spin_lock_irqsave(&instance->hba_lock, flags);
6367 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
6368 spin_unlock_irqrestore(&instance->hba_lock, flags);
6369
6370 dev_err(&instance->pdev->dev, "timed out while"
6371 "waiting for HBA to recover\n");
6372 error = -ENODEV;
6373 goto out_up;
6374 }
6375 spin_unlock_irqrestore(&instance->hba_lock, flags);
6376
6377 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
6378 out_up:
6379 up(&instance->ioctl_sem);
6380
6381 out_kfree_ioc:
6382 kfree(ioc);
6383 return error;
6384 }
6385
6386 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
6387 {
6388 struct megasas_instance *instance;
6389 struct megasas_aen aen;
6390 int error;
6391 int i;
6392 unsigned long flags;
6393 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
6394
6395 if (file->private_data != file) {
6396 printk(KERN_DEBUG "megasas: fasync_helper was not "
6397 "called first\n");
6398 return -EINVAL;
6399 }
6400
6401 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
6402 return -EFAULT;
6403
6404 instance = megasas_lookup_instance(aen.host_no);
6405
6406 if (!instance)
6407 return -ENODEV;
6408
6409 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
6410 return -ENODEV;
6411 }
6412
6413 if (instance->unload == 1) {
6414 return -ENODEV;
6415 }
6416
6417 for (i = 0; i < wait_time; i++) {
6418
6419 spin_lock_irqsave(&instance->hba_lock, flags);
6420 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
6421 spin_unlock_irqrestore(&instance->hba_lock,
6422 flags);
6423 break;
6424 }
6425
6426 spin_unlock_irqrestore(&instance->hba_lock, flags);
6427
6428 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
6429 dev_notice(&instance->pdev->dev, "waiting for"
6430 "controller reset to finish\n");
6431 }
6432
6433 msleep(1000);
6434 }
6435
6436 spin_lock_irqsave(&instance->hba_lock, flags);
6437 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
6438 spin_unlock_irqrestore(&instance->hba_lock, flags);
6439 dev_err(&instance->pdev->dev, "timed out while waiting"
6440 "for HBA to recover\n");
6441 return -ENODEV;
6442 }
6443 spin_unlock_irqrestore(&instance->hba_lock, flags);
6444
6445 mutex_lock(&instance->aen_mutex);
6446 error = megasas_register_aen(instance, aen.seq_num,
6447 aen.class_locale_word);
6448 mutex_unlock(&instance->aen_mutex);
6449 return error;
6450 }
6451
6452 /**
6453 * megasas_mgmt_ioctl - char node ioctl entry point
6454 */
6455 static long
6456 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
6457 {
6458 switch (cmd) {
6459 case MEGASAS_IOC_FIRMWARE:
6460 return megasas_mgmt_ioctl_fw(file, arg);
6461
6462 case MEGASAS_IOC_GET_AEN:
6463 return megasas_mgmt_ioctl_aen(file, arg);
6464 }
6465
6466 return -ENOTTY;
6467 }
6468
6469 #ifdef CONFIG_COMPAT
6470 static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg)
6471 {
6472 struct compat_megasas_iocpacket __user *cioc =
6473 (struct compat_megasas_iocpacket __user *)arg;
6474 struct megasas_iocpacket __user *ioc =
6475 compat_alloc_user_space(sizeof(struct megasas_iocpacket));
6476 int i;
6477 int error = 0;
6478 compat_uptr_t ptr;
6479 unsigned long local_raw_ptr;
6480 u32 local_sense_off;
6481 u32 local_sense_len;
6482
6483 if (clear_user(ioc, sizeof(*ioc)))
6484 return -EFAULT;
6485
6486 if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) ||
6487 copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) ||
6488 copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) ||
6489 copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) ||
6490 copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) ||
6491 copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32)))
6492 return -EFAULT;
6493
6494 /*
6495 * The sense_ptr is used in megasas_mgmt_fw_ioctl only when
6496 * sense_len is not null, so prepare the 64bit value under
6497 * the same condition.
6498 */
6499 if (get_user(local_raw_ptr, ioc->frame.raw) ||
6500 get_user(local_sense_off, &ioc->sense_off) ||
6501 get_user(local_sense_len, &ioc->sense_len))
6502 return -EFAULT;
6503
6504
6505 if (local_sense_len) {
6506 void __user **sense_ioc_ptr =
6507 (void __user **)((u8*)local_raw_ptr + local_sense_off);
6508 compat_uptr_t *sense_cioc_ptr =
6509 (compat_uptr_t *)(cioc->frame.raw + cioc->sense_off);
6510 if (get_user(ptr, sense_cioc_ptr) ||
6511 put_user(compat_ptr(ptr), sense_ioc_ptr))
6512 return -EFAULT;
6513 }
6514
6515 for (i = 0; i < MAX_IOCTL_SGE; i++) {
6516 if (get_user(ptr, &cioc->sgl[i].iov_base) ||
6517 put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) ||
6518 copy_in_user(&ioc->sgl[i].iov_len,
6519 &cioc->sgl[i].iov_len, sizeof(compat_size_t)))
6520 return -EFAULT;
6521 }
6522
6523 error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc);
6524
6525 if (copy_in_user(&cioc->frame.hdr.cmd_status,
6526 &ioc->frame.hdr.cmd_status, sizeof(u8))) {
6527 printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n");
6528 return -EFAULT;
6529 }
6530 return error;
6531 }
6532
6533 static long
6534 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
6535 unsigned long arg)
6536 {
6537 switch (cmd) {
6538 case MEGASAS_IOC_FIRMWARE32:
6539 return megasas_mgmt_compat_ioctl_fw(file, arg);
6540 case MEGASAS_IOC_GET_AEN:
6541 return megasas_mgmt_ioctl_aen(file, arg);
6542 }
6543
6544 return -ENOTTY;
6545 }
6546 #endif
6547
6548 /*
6549 * File operations structure for management interface
6550 */
6551 static const struct file_operations megasas_mgmt_fops = {
6552 .owner = THIS_MODULE,
6553 .open = megasas_mgmt_open,
6554 .fasync = megasas_mgmt_fasync,
6555 .unlocked_ioctl = megasas_mgmt_ioctl,
6556 .poll = megasas_mgmt_poll,
6557 #ifdef CONFIG_COMPAT
6558 .compat_ioctl = megasas_mgmt_compat_ioctl,
6559 #endif
6560 .llseek = noop_llseek,
6561 };
6562
6563 /*
6564 * PCI hotplug support registration structure
6565 */
6566 static struct pci_driver megasas_pci_driver = {
6567
6568 .name = "megaraid_sas",
6569 .id_table = megasas_pci_table,
6570 .probe = megasas_probe_one,
6571 .remove = megasas_detach_one,
6572 .suspend = megasas_suspend,
6573 .resume = megasas_resume,
6574 .shutdown = megasas_shutdown,
6575 };
6576
6577 /*
6578 * Sysfs driver attributes
6579 */
6580 static ssize_t megasas_sysfs_show_version(struct device_driver *dd, char *buf)
6581 {
6582 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
6583 MEGASAS_VERSION);
6584 }
6585
6586 static DRIVER_ATTR(version, S_IRUGO, megasas_sysfs_show_version, NULL);
6587
6588 static ssize_t
6589 megasas_sysfs_show_release_date(struct device_driver *dd, char *buf)
6590 {
6591 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
6592 MEGASAS_RELDATE);
6593 }
6594
6595 static DRIVER_ATTR(release_date, S_IRUGO, megasas_sysfs_show_release_date, NULL);
6596
6597 static ssize_t
6598 megasas_sysfs_show_support_poll_for_event(struct device_driver *dd, char *buf)
6599 {
6600 return sprintf(buf, "%u\n", support_poll_for_event);
6601 }
6602
6603 static DRIVER_ATTR(support_poll_for_event, S_IRUGO,
6604 megasas_sysfs_show_support_poll_for_event, NULL);
6605
6606 static ssize_t
6607 megasas_sysfs_show_support_device_change(struct device_driver *dd, char *buf)
6608 {
6609 return sprintf(buf, "%u\n", support_device_change);
6610 }
6611
6612 static DRIVER_ATTR(support_device_change, S_IRUGO,
6613 megasas_sysfs_show_support_device_change, NULL);
6614
6615 static ssize_t
6616 megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf)
6617 {
6618 return sprintf(buf, "%u\n", megasas_dbg_lvl);
6619 }
6620
6621 static ssize_t
6622 megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count)
6623 {
6624 int retval = count;
6625
6626 if (sscanf(buf, "%u", &megasas_dbg_lvl) < 1) {
6627 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
6628 retval = -EINVAL;
6629 }
6630 return retval;
6631 }
6632
6633 static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUSR, megasas_sysfs_show_dbg_lvl,
6634 megasas_sysfs_set_dbg_lvl);
6635
6636 static void
6637 megasas_aen_polling(struct work_struct *work)
6638 {
6639 struct megasas_aen_event *ev =
6640 container_of(work, struct megasas_aen_event, hotplug_work.work);
6641 struct megasas_instance *instance = ev->instance;
6642 union megasas_evt_class_locale class_locale;
6643 struct Scsi_Host *host;
6644 struct scsi_device *sdev1;
6645 u16 pd_index = 0;
6646 u16 ld_index = 0;
6647 int i, j, doscan = 0;
6648 u32 seq_num, wait_time = MEGASAS_RESET_WAIT_TIME;
6649 int error;
6650
6651 if (!instance) {
6652 printk(KERN_ERR "invalid instance!\n");
6653 kfree(ev);
6654 return;
6655 }
6656
6657 /* Adjust event workqueue thread wait time for VF mode */
6658 if (instance->requestorId)
6659 wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF;
6660
6661 /* Don't run the event workqueue thread if OCR is running */
6662 for (i = 0; i < wait_time; i++) {
6663 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL)
6664 break;
6665 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
6666 dev_notice(&instance->pdev->dev, "%s waiting for "
6667 "controller reset to finish for scsi%d\n",
6668 __func__, instance->host->host_no);
6669 }
6670 msleep(1000);
6671 }
6672
6673 instance->ev = NULL;
6674 host = instance->host;
6675 if (instance->evt_detail) {
6676 megasas_decode_evt(instance);
6677
6678 switch (le32_to_cpu(instance->evt_detail->code)) {
6679 case MR_EVT_PD_INSERTED:
6680 if (megasas_get_pd_list(instance) == 0) {
6681 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
6682 for (j = 0;
6683 j < MEGASAS_MAX_DEV_PER_CHANNEL;
6684 j++) {
6685
6686 pd_index =
6687 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
6688
6689 sdev1 = scsi_device_lookup(host, i, j, 0);
6690
6691 if (instance->pd_list[pd_index].driveState
6692 == MR_PD_STATE_SYSTEM) {
6693 if (!sdev1)
6694 scsi_add_device(host, i, j, 0);
6695
6696 if (sdev1)
6697 scsi_device_put(sdev1);
6698 }
6699 }
6700 }
6701 }
6702 doscan = 0;
6703 break;
6704
6705 case MR_EVT_PD_REMOVED:
6706 if (megasas_get_pd_list(instance) == 0) {
6707 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
6708 for (j = 0;
6709 j < MEGASAS_MAX_DEV_PER_CHANNEL;
6710 j++) {
6711
6712 pd_index =
6713 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
6714
6715 sdev1 = scsi_device_lookup(host, i, j, 0);
6716
6717 if (instance->pd_list[pd_index].driveState
6718 == MR_PD_STATE_SYSTEM) {
6719 if (sdev1)
6720 scsi_device_put(sdev1);
6721 } else {
6722 if (sdev1) {
6723 scsi_remove_device(sdev1);
6724 scsi_device_put(sdev1);
6725 }
6726 }
6727 }
6728 }
6729 }
6730 doscan = 0;
6731 break;
6732
6733 case MR_EVT_LD_OFFLINE:
6734 case MR_EVT_CFG_CLEARED:
6735 case MR_EVT_LD_DELETED:
6736 if (!instance->requestorId ||
6737 megasas_get_ld_vf_affiliation(instance, 0)) {
6738 if (megasas_ld_list_query(instance,
6739 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
6740 megasas_get_ld_list(instance);
6741 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
6742 for (j = 0;
6743 j < MEGASAS_MAX_DEV_PER_CHANNEL;
6744 j++) {
6745
6746 ld_index =
6747 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
6748
6749 sdev1 = scsi_device_lookup(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
6750
6751 if (instance->ld_ids[ld_index]
6752 != 0xff) {
6753 if (sdev1)
6754 scsi_device_put(sdev1);
6755 } else {
6756 if (sdev1) {
6757 scsi_remove_device(sdev1);
6758 scsi_device_put(sdev1);
6759 }
6760 }
6761 }
6762 }
6763 doscan = 0;
6764 }
6765 break;
6766 case MR_EVT_LD_CREATED:
6767 if (!instance->requestorId ||
6768 megasas_get_ld_vf_affiliation(instance, 0)) {
6769 if (megasas_ld_list_query(instance,
6770 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
6771 megasas_get_ld_list(instance);
6772 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
6773 for (j = 0;
6774 j < MEGASAS_MAX_DEV_PER_CHANNEL;
6775 j++) {
6776 ld_index =
6777 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
6778
6779 sdev1 = scsi_device_lookup(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
6780
6781 if (instance->ld_ids[ld_index]
6782 != 0xff) {
6783 if (!sdev1)
6784 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
6785 }
6786 if (sdev1)
6787 scsi_device_put(sdev1);
6788 }
6789 }
6790 doscan = 0;
6791 }
6792 break;
6793 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
6794 case MR_EVT_FOREIGN_CFG_IMPORTED:
6795 case MR_EVT_LD_STATE_CHANGE:
6796 doscan = 1;
6797 break;
6798 case MR_EVT_CTRL_PROP_CHANGED:
6799 megasas_get_ctrl_info(instance);
6800 break;
6801 default:
6802 doscan = 0;
6803 break;
6804 }
6805 } else {
6806 dev_err(&instance->pdev->dev, "invalid evt_detail!\n");
6807 kfree(ev);
6808 return;
6809 }
6810
6811 if (doscan) {
6812 dev_info(&instance->pdev->dev, "scanning for scsi%d...\n",
6813 instance->host->host_no);
6814 if (megasas_get_pd_list(instance) == 0) {
6815 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
6816 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
6817 pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j;
6818 sdev1 = scsi_device_lookup(host, i, j, 0);
6819 if (instance->pd_list[pd_index].driveState ==
6820 MR_PD_STATE_SYSTEM) {
6821 if (!sdev1) {
6822 scsi_add_device(host, i, j, 0);
6823 }
6824 if (sdev1)
6825 scsi_device_put(sdev1);
6826 } else {
6827 if (sdev1) {
6828 scsi_remove_device(sdev1);
6829 scsi_device_put(sdev1);
6830 }
6831 }
6832 }
6833 }
6834 }
6835
6836 if (!instance->requestorId ||
6837 megasas_get_ld_vf_affiliation(instance, 0)) {
6838 if (megasas_ld_list_query(instance,
6839 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
6840 megasas_get_ld_list(instance);
6841 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
6842 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL;
6843 j++) {
6844 ld_index =
6845 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
6846
6847 sdev1 = scsi_device_lookup(host,
6848 MEGASAS_MAX_PD_CHANNELS + i, j, 0);
6849 if (instance->ld_ids[ld_index]
6850 != 0xff) {
6851 if (!sdev1)
6852 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
6853 else
6854 scsi_device_put(sdev1);
6855 } else {
6856 if (sdev1) {
6857 scsi_remove_device(sdev1);
6858 scsi_device_put(sdev1);
6859 }
6860 }
6861 }
6862 }
6863 }
6864 }
6865
6866 if (instance->aen_cmd != NULL) {
6867 kfree(ev);
6868 return ;
6869 }
6870
6871 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1;
6872
6873 /* Register AEN with FW for latest sequence number plus 1 */
6874 class_locale.members.reserved = 0;
6875 class_locale.members.locale = MR_EVT_LOCALE_ALL;
6876 class_locale.members.class = MR_EVT_CLASS_DEBUG;
6877 mutex_lock(&instance->aen_mutex);
6878 error = megasas_register_aen(instance, seq_num,
6879 class_locale.word);
6880 mutex_unlock(&instance->aen_mutex);
6881
6882 if (error)
6883 dev_err(&instance->pdev->dev, "register aen failed error %x\n", error);
6884
6885 kfree(ev);
6886 }
6887
6888 /**
6889 * megasas_init - Driver load entry point
6890 */
6891 static int __init megasas_init(void)
6892 {
6893 int rval;
6894
6895 /*
6896 * Announce driver version and other information
6897 */
6898 pr_info("megasas: %s\n", MEGASAS_VERSION);
6899
6900 spin_lock_init(&poll_aen_lock);
6901
6902 support_poll_for_event = 2;
6903 support_device_change = 1;
6904
6905 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
6906
6907 /*
6908 * Register character device node
6909 */
6910 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
6911
6912 if (rval < 0) {
6913 printk(KERN_DEBUG "megasas: failed to open device node\n");
6914 return rval;
6915 }
6916
6917 megasas_mgmt_majorno = rval;
6918
6919 /*
6920 * Register ourselves as PCI hotplug module
6921 */
6922 rval = pci_register_driver(&megasas_pci_driver);
6923
6924 if (rval) {
6925 printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n");
6926 goto err_pcidrv;
6927 }
6928
6929 rval = driver_create_file(&megasas_pci_driver.driver,
6930 &driver_attr_version);
6931 if (rval)
6932 goto err_dcf_attr_ver;
6933
6934 rval = driver_create_file(&megasas_pci_driver.driver,
6935 &driver_attr_release_date);
6936 if (rval)
6937 goto err_dcf_rel_date;
6938
6939 rval = driver_create_file(&megasas_pci_driver.driver,
6940 &driver_attr_support_poll_for_event);
6941 if (rval)
6942 goto err_dcf_support_poll_for_event;
6943
6944 rval = driver_create_file(&megasas_pci_driver.driver,
6945 &driver_attr_dbg_lvl);
6946 if (rval)
6947 goto err_dcf_dbg_lvl;
6948 rval = driver_create_file(&megasas_pci_driver.driver,
6949 &driver_attr_support_device_change);
6950 if (rval)
6951 goto err_dcf_support_device_change;
6952
6953 return rval;
6954
6955 err_dcf_support_device_change:
6956 driver_remove_file(&megasas_pci_driver.driver,
6957 &driver_attr_dbg_lvl);
6958 err_dcf_dbg_lvl:
6959 driver_remove_file(&megasas_pci_driver.driver,
6960 &driver_attr_support_poll_for_event);
6961 err_dcf_support_poll_for_event:
6962 driver_remove_file(&megasas_pci_driver.driver,
6963 &driver_attr_release_date);
6964 err_dcf_rel_date:
6965 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
6966 err_dcf_attr_ver:
6967 pci_unregister_driver(&megasas_pci_driver);
6968 err_pcidrv:
6969 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
6970 return rval;
6971 }
6972
6973 /**
6974 * megasas_exit - Driver unload entry point
6975 */
6976 static void __exit megasas_exit(void)
6977 {
6978 driver_remove_file(&megasas_pci_driver.driver,
6979 &driver_attr_dbg_lvl);
6980 driver_remove_file(&megasas_pci_driver.driver,
6981 &driver_attr_support_poll_for_event);
6982 driver_remove_file(&megasas_pci_driver.driver,
6983 &driver_attr_support_device_change);
6984 driver_remove_file(&megasas_pci_driver.driver,
6985 &driver_attr_release_date);
6986 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
6987
6988 pci_unregister_driver(&megasas_pci_driver);
6989 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
6990 }
6991
6992 module_init(megasas_init);
6993 module_exit(megasas_exit);
Linux with added FPC-III support