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Merge remote-tracking branches 'spi/topic/falcon', 'spi/topic/fsf', 'spi/topic/fsl...
[deliverable/linux.git] / drivers / scsi / megaraid / megaraid_sas_base.c
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 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@lsi.com");
98 MODULE_DESCRIPTION("LSI 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 {}
139 };
140
141 MODULE_DEVICE_TABLE(pci, megasas_pci_table);
142
143 static int megasas_mgmt_majorno;
144 struct megasas_mgmt_info megasas_mgmt_info;
145 static struct fasync_struct *megasas_async_queue;
146 static DEFINE_MUTEX(megasas_async_queue_mutex);
147
148 static int megasas_poll_wait_aen;
149 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
150 static u32 support_poll_for_event;
151 u32 megasas_dbg_lvl;
152 static u32 support_device_change;
153
154 /* define lock for aen poll */
155 spinlock_t poll_aen_lock;
156
157 void
158 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
159 u8 alt_status);
160 static u32
161 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs);
162 static int
163 megasas_adp_reset_gen2(struct megasas_instance *instance,
164 struct megasas_register_set __iomem *reg_set);
165 static irqreturn_t megasas_isr(int irq, void *devp);
166 static u32
167 megasas_init_adapter_mfi(struct megasas_instance *instance);
168 u32
169 megasas_build_and_issue_cmd(struct megasas_instance *instance,
170 struct scsi_cmnd *scmd);
171 static void megasas_complete_cmd_dpc(unsigned long instance_addr);
172 void
173 megasas_release_fusion(struct megasas_instance *instance);
174 int
175 megasas_ioc_init_fusion(struct megasas_instance *instance);
176 void
177 megasas_free_cmds_fusion(struct megasas_instance *instance);
178 u8
179 megasas_get_map_info(struct megasas_instance *instance);
180 int
181 megasas_sync_map_info(struct megasas_instance *instance);
182 int
183 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd,
184 int seconds);
185 void megasas_reset_reply_desc(struct megasas_instance *instance);
186 int megasas_reset_fusion(struct Scsi_Host *shost, int iotimeout);
187 void megasas_fusion_ocr_wq(struct work_struct *work);
188 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
189 int initial);
190 int megasas_check_mpio_paths(struct megasas_instance *instance,
191 struct scsi_cmnd *scmd);
192
193 void
194 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
195 {
196 instance->instancet->fire_cmd(instance,
197 cmd->frame_phys_addr, 0, instance->reg_set);
198 }
199
200 /**
201 * megasas_get_cmd - Get a command from the free pool
202 * @instance: Adapter soft state
203 *
204 * Returns a free command from the pool
205 */
206 struct megasas_cmd *megasas_get_cmd(struct megasas_instance
207 *instance)
208 {
209 unsigned long flags;
210 struct megasas_cmd *cmd = NULL;
211
212 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
213
214 if (!list_empty(&instance->cmd_pool)) {
215 cmd = list_entry((&instance->cmd_pool)->next,
216 struct megasas_cmd, list);
217 list_del_init(&cmd->list);
218 atomic_set(&cmd->mfi_mpt_pthr, MFI_MPT_DETACHED);
219 } else {
220 printk(KERN_ERR "megasas: Command pool empty!\n");
221 }
222
223 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
224 return cmd;
225 }
226
227 /**
228 * __megasas_return_cmd - Return a cmd to free command pool
229 * @instance: Adapter soft state
230 * @cmd: Command packet to be returned to free command pool
231 */
232 inline void
233 __megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
234 {
235 /*
236 * Don't go ahead and free the MFI frame, if corresponding
237 * MPT frame is not freed(valid for only fusion adapters).
238 * In case of MFI adapters, anyways for any allocated MFI
239 * frame will have cmd->mfi_mpt_mpthr set to MFI_MPT_DETACHED
240 */
241 if (atomic_read(&cmd->mfi_mpt_pthr) != MFI_MPT_DETACHED)
242 return;
243
244 cmd->scmd = NULL;
245 cmd->frame_count = 0;
246 cmd->is_wait_event = 0;
247 cmd->mpt_pthr_cmd_blocked = NULL;
248
249 if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) &&
250 (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) &&
251 (instance->pdev->device != PCI_DEVICE_ID_LSI_FURY) &&
252 (reset_devices))
253 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
254
255 atomic_set(&cmd->mfi_mpt_pthr, MFI_LIST_ADDED);
256 list_add(&cmd->list, (&instance->cmd_pool)->next);
257 }
258
259 /**
260 * megasas_return_cmd - Return a cmd to free command pool
261 * @instance: Adapter soft state
262 * @cmd: Command packet to be returned to free command pool
263 */
264 inline void
265 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
266 {
267 unsigned long flags;
268
269 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
270 __megasas_return_cmd(instance, cmd);
271 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
272 }
273
274
275 /**
276 * The following functions are defined for xscale
277 * (deviceid : 1064R, PERC5) controllers
278 */
279
280 /**
281 * megasas_enable_intr_xscale - Enables interrupts
282 * @regs: MFI register set
283 */
284 static inline void
285 megasas_enable_intr_xscale(struct megasas_instance *instance)
286 {
287 struct megasas_register_set __iomem *regs;
288 regs = instance->reg_set;
289 writel(0, &(regs)->outbound_intr_mask);
290
291 /* Dummy readl to force pci flush */
292 readl(&regs->outbound_intr_mask);
293 }
294
295 /**
296 * megasas_disable_intr_xscale -Disables interrupt
297 * @regs: MFI register set
298 */
299 static inline void
300 megasas_disable_intr_xscale(struct megasas_instance *instance)
301 {
302 struct megasas_register_set __iomem *regs;
303 u32 mask = 0x1f;
304 regs = instance->reg_set;
305 writel(mask, &regs->outbound_intr_mask);
306 /* Dummy readl to force pci flush */
307 readl(&regs->outbound_intr_mask);
308 }
309
310 /**
311 * megasas_read_fw_status_reg_xscale - returns the current FW status value
312 * @regs: MFI register set
313 */
314 static u32
315 megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs)
316 {
317 return readl(&(regs)->outbound_msg_0);
318 }
319 /**
320 * megasas_clear_interrupt_xscale - Check & clear interrupt
321 * @regs: MFI register set
322 */
323 static int
324 megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs)
325 {
326 u32 status;
327 u32 mfiStatus = 0;
328 /*
329 * Check if it is our interrupt
330 */
331 status = readl(&regs->outbound_intr_status);
332
333 if (status & MFI_OB_INTR_STATUS_MASK)
334 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
335 if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
336 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
337
338 /*
339 * Clear the interrupt by writing back the same value
340 */
341 if (mfiStatus)
342 writel(status, &regs->outbound_intr_status);
343
344 /* Dummy readl to force pci flush */
345 readl(&regs->outbound_intr_status);
346
347 return mfiStatus;
348 }
349
350 /**
351 * megasas_fire_cmd_xscale - Sends command to the FW
352 * @frame_phys_addr : Physical address of cmd
353 * @frame_count : Number of frames for the command
354 * @regs : MFI register set
355 */
356 static inline void
357 megasas_fire_cmd_xscale(struct megasas_instance *instance,
358 dma_addr_t frame_phys_addr,
359 u32 frame_count,
360 struct megasas_register_set __iomem *regs)
361 {
362 unsigned long flags;
363 spin_lock_irqsave(&instance->hba_lock, flags);
364 writel((frame_phys_addr >> 3)|(frame_count),
365 &(regs)->inbound_queue_port);
366 spin_unlock_irqrestore(&instance->hba_lock, flags);
367 }
368
369 /**
370 * megasas_adp_reset_xscale - For controller reset
371 * @regs: MFI register set
372 */
373 static int
374 megasas_adp_reset_xscale(struct megasas_instance *instance,
375 struct megasas_register_set __iomem *regs)
376 {
377 u32 i;
378 u32 pcidata;
379 writel(MFI_ADP_RESET, &regs->inbound_doorbell);
380
381 for (i = 0; i < 3; i++)
382 msleep(1000); /* sleep for 3 secs */
383 pcidata = 0;
384 pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
385 printk(KERN_NOTICE "pcidata = %x\n", pcidata);
386 if (pcidata & 0x2) {
387 printk(KERN_NOTICE "mfi 1068 offset read=%x\n", pcidata);
388 pcidata &= ~0x2;
389 pci_write_config_dword(instance->pdev,
390 MFI_1068_PCSR_OFFSET, pcidata);
391
392 for (i = 0; i < 2; i++)
393 msleep(1000); /* need to wait 2 secs again */
394
395 pcidata = 0;
396 pci_read_config_dword(instance->pdev,
397 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
398 printk(KERN_NOTICE "1068 offset handshake read=%x\n", pcidata);
399 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
400 printk(KERN_NOTICE "1068 offset pcidt=%x\n", pcidata);
401 pcidata = 0;
402 pci_write_config_dword(instance->pdev,
403 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
404 }
405 }
406 return 0;
407 }
408
409 /**
410 * megasas_check_reset_xscale - For controller reset check
411 * @regs: MFI register set
412 */
413 static int
414 megasas_check_reset_xscale(struct megasas_instance *instance,
415 struct megasas_register_set __iomem *regs)
416 {
417
418 if ((instance->adprecovery != MEGASAS_HBA_OPERATIONAL) &&
419 (le32_to_cpu(*instance->consumer) ==
420 MEGASAS_ADPRESET_INPROG_SIGN))
421 return 1;
422 return 0;
423 }
424
425 static struct megasas_instance_template megasas_instance_template_xscale = {
426
427 .fire_cmd = megasas_fire_cmd_xscale,
428 .enable_intr = megasas_enable_intr_xscale,
429 .disable_intr = megasas_disable_intr_xscale,
430 .clear_intr = megasas_clear_intr_xscale,
431 .read_fw_status_reg = megasas_read_fw_status_reg_xscale,
432 .adp_reset = megasas_adp_reset_xscale,
433 .check_reset = megasas_check_reset_xscale,
434 .service_isr = megasas_isr,
435 .tasklet = megasas_complete_cmd_dpc,
436 .init_adapter = megasas_init_adapter_mfi,
437 .build_and_issue_cmd = megasas_build_and_issue_cmd,
438 .issue_dcmd = megasas_issue_dcmd,
439 };
440
441 /**
442 * This is the end of set of functions & definitions specific
443 * to xscale (deviceid : 1064R, PERC5) controllers
444 */
445
446 /**
447 * The following functions are defined for ppc (deviceid : 0x60)
448 * controllers
449 */
450
451 /**
452 * megasas_enable_intr_ppc - Enables interrupts
453 * @regs: MFI register set
454 */
455 static inline void
456 megasas_enable_intr_ppc(struct megasas_instance *instance)
457 {
458 struct megasas_register_set __iomem *regs;
459 regs = instance->reg_set;
460 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
461
462 writel(~0x80000000, &(regs)->outbound_intr_mask);
463
464 /* Dummy readl to force pci flush */
465 readl(&regs->outbound_intr_mask);
466 }
467
468 /**
469 * megasas_disable_intr_ppc - Disable interrupt
470 * @regs: MFI register set
471 */
472 static inline void
473 megasas_disable_intr_ppc(struct megasas_instance *instance)
474 {
475 struct megasas_register_set __iomem *regs;
476 u32 mask = 0xFFFFFFFF;
477 regs = instance->reg_set;
478 writel(mask, &regs->outbound_intr_mask);
479 /* Dummy readl to force pci flush */
480 readl(&regs->outbound_intr_mask);
481 }
482
483 /**
484 * megasas_read_fw_status_reg_ppc - returns the current FW status value
485 * @regs: MFI register set
486 */
487 static u32
488 megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs)
489 {
490 return readl(&(regs)->outbound_scratch_pad);
491 }
492
493 /**
494 * megasas_clear_interrupt_ppc - Check & clear interrupt
495 * @regs: MFI register set
496 */
497 static int
498 megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs)
499 {
500 u32 status, mfiStatus = 0;
501
502 /*
503 * Check if it is our interrupt
504 */
505 status = readl(&regs->outbound_intr_status);
506
507 if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT)
508 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
509
510 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT)
511 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
512
513 /*
514 * Clear the interrupt by writing back the same value
515 */
516 writel(status, &regs->outbound_doorbell_clear);
517
518 /* Dummy readl to force pci flush */
519 readl(&regs->outbound_doorbell_clear);
520
521 return mfiStatus;
522 }
523
524 /**
525 * megasas_fire_cmd_ppc - Sends command to the FW
526 * @frame_phys_addr : Physical address of cmd
527 * @frame_count : Number of frames for the command
528 * @regs : MFI register set
529 */
530 static inline void
531 megasas_fire_cmd_ppc(struct megasas_instance *instance,
532 dma_addr_t frame_phys_addr,
533 u32 frame_count,
534 struct megasas_register_set __iomem *regs)
535 {
536 unsigned long flags;
537 spin_lock_irqsave(&instance->hba_lock, flags);
538 writel((frame_phys_addr | (frame_count<<1))|1,
539 &(regs)->inbound_queue_port);
540 spin_unlock_irqrestore(&instance->hba_lock, flags);
541 }
542
543 /**
544 * megasas_check_reset_ppc - For controller reset check
545 * @regs: MFI register set
546 */
547 static int
548 megasas_check_reset_ppc(struct megasas_instance *instance,
549 struct megasas_register_set __iomem *regs)
550 {
551 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL)
552 return 1;
553
554 return 0;
555 }
556
557 static struct megasas_instance_template megasas_instance_template_ppc = {
558
559 .fire_cmd = megasas_fire_cmd_ppc,
560 .enable_intr = megasas_enable_intr_ppc,
561 .disable_intr = megasas_disable_intr_ppc,
562 .clear_intr = megasas_clear_intr_ppc,
563 .read_fw_status_reg = megasas_read_fw_status_reg_ppc,
564 .adp_reset = megasas_adp_reset_xscale,
565 .check_reset = megasas_check_reset_ppc,
566 .service_isr = megasas_isr,
567 .tasklet = megasas_complete_cmd_dpc,
568 .init_adapter = megasas_init_adapter_mfi,
569 .build_and_issue_cmd = megasas_build_and_issue_cmd,
570 .issue_dcmd = megasas_issue_dcmd,
571 };
572
573 /**
574 * megasas_enable_intr_skinny - Enables interrupts
575 * @regs: MFI register set
576 */
577 static inline void
578 megasas_enable_intr_skinny(struct megasas_instance *instance)
579 {
580 struct megasas_register_set __iomem *regs;
581 regs = instance->reg_set;
582 writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
583
584 writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
585
586 /* Dummy readl to force pci flush */
587 readl(&regs->outbound_intr_mask);
588 }
589
590 /**
591 * megasas_disable_intr_skinny - Disables interrupt
592 * @regs: MFI register set
593 */
594 static inline void
595 megasas_disable_intr_skinny(struct megasas_instance *instance)
596 {
597 struct megasas_register_set __iomem *regs;
598 u32 mask = 0xFFFFFFFF;
599 regs = instance->reg_set;
600 writel(mask, &regs->outbound_intr_mask);
601 /* Dummy readl to force pci flush */
602 readl(&regs->outbound_intr_mask);
603 }
604
605 /**
606 * megasas_read_fw_status_reg_skinny - returns the current FW status value
607 * @regs: MFI register set
608 */
609 static u32
610 megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem *regs)
611 {
612 return readl(&(regs)->outbound_scratch_pad);
613 }
614
615 /**
616 * megasas_clear_interrupt_skinny - Check & clear interrupt
617 * @regs: MFI register set
618 */
619 static int
620 megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs)
621 {
622 u32 status;
623 u32 mfiStatus = 0;
624
625 /*
626 * Check if it is our interrupt
627 */
628 status = readl(&regs->outbound_intr_status);
629
630 if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
631 return 0;
632 }
633
634 /*
635 * Check if it is our interrupt
636 */
637 if ((megasas_read_fw_status_reg_skinny(regs) & MFI_STATE_MASK) ==
638 MFI_STATE_FAULT) {
639 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
640 } else
641 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
642
643 /*
644 * Clear the interrupt by writing back the same value
645 */
646 writel(status, &regs->outbound_intr_status);
647
648 /*
649 * dummy read to flush PCI
650 */
651 readl(&regs->outbound_intr_status);
652
653 return mfiStatus;
654 }
655
656 /**
657 * megasas_fire_cmd_skinny - Sends command to the FW
658 * @frame_phys_addr : Physical address of cmd
659 * @frame_count : Number of frames for the command
660 * @regs : MFI register set
661 */
662 static inline void
663 megasas_fire_cmd_skinny(struct megasas_instance *instance,
664 dma_addr_t frame_phys_addr,
665 u32 frame_count,
666 struct megasas_register_set __iomem *regs)
667 {
668 unsigned long flags;
669 spin_lock_irqsave(&instance->hba_lock, flags);
670 writel(upper_32_bits(frame_phys_addr),
671 &(regs)->inbound_high_queue_port);
672 writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1,
673 &(regs)->inbound_low_queue_port);
674 spin_unlock_irqrestore(&instance->hba_lock, flags);
675 }
676
677 /**
678 * megasas_check_reset_skinny - For controller reset check
679 * @regs: MFI register set
680 */
681 static int
682 megasas_check_reset_skinny(struct megasas_instance *instance,
683 struct megasas_register_set __iomem *regs)
684 {
685 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL)
686 return 1;
687
688 return 0;
689 }
690
691 static struct megasas_instance_template megasas_instance_template_skinny = {
692
693 .fire_cmd = megasas_fire_cmd_skinny,
694 .enable_intr = megasas_enable_intr_skinny,
695 .disable_intr = megasas_disable_intr_skinny,
696 .clear_intr = megasas_clear_intr_skinny,
697 .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
698 .adp_reset = megasas_adp_reset_gen2,
699 .check_reset = megasas_check_reset_skinny,
700 .service_isr = megasas_isr,
701 .tasklet = megasas_complete_cmd_dpc,
702 .init_adapter = megasas_init_adapter_mfi,
703 .build_and_issue_cmd = megasas_build_and_issue_cmd,
704 .issue_dcmd = megasas_issue_dcmd,
705 };
706
707
708 /**
709 * The following functions are defined for gen2 (deviceid : 0x78 0x79)
710 * controllers
711 */
712
713 /**
714 * megasas_enable_intr_gen2 - Enables interrupts
715 * @regs: MFI register set
716 */
717 static inline void
718 megasas_enable_intr_gen2(struct megasas_instance *instance)
719 {
720 struct megasas_register_set __iomem *regs;
721 regs = instance->reg_set;
722 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
723
724 /* write ~0x00000005 (4 & 1) to the intr mask*/
725 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
726
727 /* Dummy readl to force pci flush */
728 readl(&regs->outbound_intr_mask);
729 }
730
731 /**
732 * megasas_disable_intr_gen2 - Disables interrupt
733 * @regs: MFI register set
734 */
735 static inline void
736 megasas_disable_intr_gen2(struct megasas_instance *instance)
737 {
738 struct megasas_register_set __iomem *regs;
739 u32 mask = 0xFFFFFFFF;
740 regs = instance->reg_set;
741 writel(mask, &regs->outbound_intr_mask);
742 /* Dummy readl to force pci flush */
743 readl(&regs->outbound_intr_mask);
744 }
745
746 /**
747 * megasas_read_fw_status_reg_gen2 - returns the current FW status value
748 * @regs: MFI register set
749 */
750 static u32
751 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs)
752 {
753 return readl(&(regs)->outbound_scratch_pad);
754 }
755
756 /**
757 * megasas_clear_interrupt_gen2 - Check & clear interrupt
758 * @regs: MFI register set
759 */
760 static int
761 megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs)
762 {
763 u32 status;
764 u32 mfiStatus = 0;
765 /*
766 * Check if it is our interrupt
767 */
768 status = readl(&regs->outbound_intr_status);
769
770 if (status & MFI_INTR_FLAG_REPLY_MESSAGE) {
771 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
772 }
773 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
774 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
775 }
776
777 /*
778 * Clear the interrupt by writing back the same value
779 */
780 if (mfiStatus)
781 writel(status, &regs->outbound_doorbell_clear);
782
783 /* Dummy readl to force pci flush */
784 readl(&regs->outbound_intr_status);
785
786 return mfiStatus;
787 }
788 /**
789 * megasas_fire_cmd_gen2 - Sends command to the FW
790 * @frame_phys_addr : Physical address of cmd
791 * @frame_count : Number of frames for the command
792 * @regs : MFI register set
793 */
794 static inline void
795 megasas_fire_cmd_gen2(struct megasas_instance *instance,
796 dma_addr_t frame_phys_addr,
797 u32 frame_count,
798 struct megasas_register_set __iomem *regs)
799 {
800 unsigned long flags;
801 spin_lock_irqsave(&instance->hba_lock, flags);
802 writel((frame_phys_addr | (frame_count<<1))|1,
803 &(regs)->inbound_queue_port);
804 spin_unlock_irqrestore(&instance->hba_lock, flags);
805 }
806
807 /**
808 * megasas_adp_reset_gen2 - For controller reset
809 * @regs: MFI register set
810 */
811 static int
812 megasas_adp_reset_gen2(struct megasas_instance *instance,
813 struct megasas_register_set __iomem *reg_set)
814 {
815 u32 retry = 0 ;
816 u32 HostDiag;
817 u32 *seq_offset = &reg_set->seq_offset;
818 u32 *hostdiag_offset = &reg_set->host_diag;
819
820 if (instance->instancet == &megasas_instance_template_skinny) {
821 seq_offset = &reg_set->fusion_seq_offset;
822 hostdiag_offset = &reg_set->fusion_host_diag;
823 }
824
825 writel(0, seq_offset);
826 writel(4, seq_offset);
827 writel(0xb, seq_offset);
828 writel(2, seq_offset);
829 writel(7, seq_offset);
830 writel(0xd, seq_offset);
831
832 msleep(1000);
833
834 HostDiag = (u32)readl(hostdiag_offset);
835
836 while ( !( HostDiag & DIAG_WRITE_ENABLE) ) {
837 msleep(100);
838 HostDiag = (u32)readl(hostdiag_offset);
839 printk(KERN_NOTICE "RESETGEN2: retry=%x, hostdiag=%x\n",
840 retry, HostDiag);
841
842 if (retry++ >= 100)
843 return 1;
844
845 }
846
847 printk(KERN_NOTICE "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
848
849 writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset);
850
851 ssleep(10);
852
853 HostDiag = (u32)readl(hostdiag_offset);
854 while ( ( HostDiag & DIAG_RESET_ADAPTER) ) {
855 msleep(100);
856 HostDiag = (u32)readl(hostdiag_offset);
857 printk(KERN_NOTICE "RESET_GEN2: retry=%x, hostdiag=%x\n",
858 retry, HostDiag);
859
860 if (retry++ >= 1000)
861 return 1;
862
863 }
864 return 0;
865 }
866
867 /**
868 * megasas_check_reset_gen2 - For controller reset check
869 * @regs: MFI register set
870 */
871 static int
872 megasas_check_reset_gen2(struct megasas_instance *instance,
873 struct megasas_register_set __iomem *regs)
874 {
875 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
876 return 1;
877 }
878
879 return 0;
880 }
881
882 static struct megasas_instance_template megasas_instance_template_gen2 = {
883
884 .fire_cmd = megasas_fire_cmd_gen2,
885 .enable_intr = megasas_enable_intr_gen2,
886 .disable_intr = megasas_disable_intr_gen2,
887 .clear_intr = megasas_clear_intr_gen2,
888 .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
889 .adp_reset = megasas_adp_reset_gen2,
890 .check_reset = megasas_check_reset_gen2,
891 .service_isr = megasas_isr,
892 .tasklet = megasas_complete_cmd_dpc,
893 .init_adapter = megasas_init_adapter_mfi,
894 .build_and_issue_cmd = megasas_build_and_issue_cmd,
895 .issue_dcmd = megasas_issue_dcmd,
896 };
897
898 /**
899 * This is the end of set of functions & definitions
900 * specific to gen2 (deviceid : 0x78, 0x79) controllers
901 */
902
903 /*
904 * Template added for TB (Fusion)
905 */
906 extern struct megasas_instance_template megasas_instance_template_fusion;
907
908 /**
909 * megasas_issue_polled - Issues a polling command
910 * @instance: Adapter soft state
911 * @cmd: Command packet to be issued
912 *
913 * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
914 */
915 int
916 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
917 {
918 int seconds;
919
920 struct megasas_header *frame_hdr = &cmd->frame->hdr;
921
922 frame_hdr->cmd_status = MFI_CMD_STATUS_POLL_MODE;
923 frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
924
925 /*
926 * Issue the frame using inbound queue port
927 */
928 instance->instancet->issue_dcmd(instance, cmd);
929
930 /*
931 * Wait for cmd_status to change
932 */
933 if (instance->requestorId)
934 seconds = MEGASAS_ROUTINE_WAIT_TIME_VF;
935 else
936 seconds = MFI_POLL_TIMEOUT_SECS;
937 return wait_and_poll(instance, cmd, seconds);
938 }
939
940 /**
941 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds
942 * @instance: Adapter soft state
943 * @cmd: Command to be issued
944 * @timeout: Timeout in seconds
945 *
946 * This function waits on an event for the command to be returned from ISR.
947 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
948 * Used to issue ioctl commands.
949 */
950 int
951 megasas_issue_blocked_cmd(struct megasas_instance *instance,
952 struct megasas_cmd *cmd, int timeout)
953 {
954 int ret = 0;
955 cmd->cmd_status = ENODATA;
956
957 cmd->is_wait_event = 1;
958 instance->instancet->issue_dcmd(instance, cmd);
959 if (timeout) {
960 ret = wait_event_timeout(instance->int_cmd_wait_q,
961 cmd->cmd_status != ENODATA, timeout * HZ);
962 if (!ret)
963 return 1;
964 } else
965 wait_event(instance->int_cmd_wait_q,
966 cmd->cmd_status != ENODATA);
967
968 return 0;
969 }
970
971 /**
972 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd
973 * @instance: Adapter soft state
974 * @cmd_to_abort: Previously issued cmd to be aborted
975 * @timeout: Timeout in seconds
976 *
977 * MFI firmware can abort previously issued AEN comamnd (automatic event
978 * notification). The megasas_issue_blocked_abort_cmd() issues such abort
979 * cmd and waits for return status.
980 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
981 */
982 static int
983 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
984 struct megasas_cmd *cmd_to_abort, int timeout)
985 {
986 struct megasas_cmd *cmd;
987 struct megasas_abort_frame *abort_fr;
988 int ret = 0;
989
990 cmd = megasas_get_cmd(instance);
991
992 if (!cmd)
993 return -1;
994
995 abort_fr = &cmd->frame->abort;
996
997 /*
998 * Prepare and issue the abort frame
999 */
1000 abort_fr->cmd = MFI_CMD_ABORT;
1001 abort_fr->cmd_status = 0xFF;
1002 abort_fr->flags = cpu_to_le16(0);
1003 abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index);
1004 abort_fr->abort_mfi_phys_addr_lo =
1005 cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr));
1006 abort_fr->abort_mfi_phys_addr_hi =
1007 cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr));
1008
1009 cmd->sync_cmd = 1;
1010 cmd->cmd_status = ENODATA;
1011
1012 instance->instancet->issue_dcmd(instance, cmd);
1013
1014 if (timeout) {
1015 ret = wait_event_timeout(instance->abort_cmd_wait_q,
1016 cmd->cmd_status != ENODATA, timeout * HZ);
1017 if (!ret) {
1018 dev_err(&instance->pdev->dev, "Command timedout"
1019 "from %s\n", __func__);
1020 return 1;
1021 }
1022 } else
1023 wait_event(instance->abort_cmd_wait_q,
1024 cmd->cmd_status != ENODATA);
1025
1026 cmd->sync_cmd = 0;
1027
1028 megasas_return_cmd(instance, cmd);
1029 return 0;
1030 }
1031
1032 /**
1033 * megasas_make_sgl32 - Prepares 32-bit SGL
1034 * @instance: Adapter soft state
1035 * @scp: SCSI command from the mid-layer
1036 * @mfi_sgl: SGL to be filled in
1037 *
1038 * If successful, this function returns the number of SG elements. Otherwise,
1039 * it returnes -1.
1040 */
1041 static int
1042 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
1043 union megasas_sgl *mfi_sgl)
1044 {
1045 int i;
1046 int sge_count;
1047 struct scatterlist *os_sgl;
1048
1049 sge_count = scsi_dma_map(scp);
1050 BUG_ON(sge_count < 0);
1051
1052 if (sge_count) {
1053 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1054 mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1055 mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl));
1056 }
1057 }
1058 return sge_count;
1059 }
1060
1061 /**
1062 * megasas_make_sgl64 - Prepares 64-bit SGL
1063 * @instance: Adapter soft state
1064 * @scp: SCSI command from the mid-layer
1065 * @mfi_sgl: SGL to be filled in
1066 *
1067 * If successful, this function returns the number of SG elements. Otherwise,
1068 * it returnes -1.
1069 */
1070 static int
1071 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
1072 union megasas_sgl *mfi_sgl)
1073 {
1074 int i;
1075 int sge_count;
1076 struct scatterlist *os_sgl;
1077
1078 sge_count = scsi_dma_map(scp);
1079 BUG_ON(sge_count < 0);
1080
1081 if (sge_count) {
1082 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1083 mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1084 mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl));
1085 }
1086 }
1087 return sge_count;
1088 }
1089
1090 /**
1091 * megasas_make_sgl_skinny - Prepares IEEE SGL
1092 * @instance: Adapter soft state
1093 * @scp: SCSI command from the mid-layer
1094 * @mfi_sgl: SGL to be filled in
1095 *
1096 * If successful, this function returns the number of SG elements. Otherwise,
1097 * it returnes -1.
1098 */
1099 static int
1100 megasas_make_sgl_skinny(struct megasas_instance *instance,
1101 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
1102 {
1103 int i;
1104 int sge_count;
1105 struct scatterlist *os_sgl;
1106
1107 sge_count = scsi_dma_map(scp);
1108
1109 if (sge_count) {
1110 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1111 mfi_sgl->sge_skinny[i].length =
1112 cpu_to_le32(sg_dma_len(os_sgl));
1113 mfi_sgl->sge_skinny[i].phys_addr =
1114 cpu_to_le64(sg_dma_address(os_sgl));
1115 mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0);
1116 }
1117 }
1118 return sge_count;
1119 }
1120
1121 /**
1122 * megasas_get_frame_count - Computes the number of frames
1123 * @frame_type : type of frame- io or pthru frame
1124 * @sge_count : number of sg elements
1125 *
1126 * Returns the number of frames required for numnber of sge's (sge_count)
1127 */
1128
1129 static u32 megasas_get_frame_count(struct megasas_instance *instance,
1130 u8 sge_count, u8 frame_type)
1131 {
1132 int num_cnt;
1133 int sge_bytes;
1134 u32 sge_sz;
1135 u32 frame_count=0;
1136
1137 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
1138 sizeof(struct megasas_sge32);
1139
1140 if (instance->flag_ieee) {
1141 sge_sz = sizeof(struct megasas_sge_skinny);
1142 }
1143
1144 /*
1145 * Main frame can contain 2 SGEs for 64-bit SGLs and
1146 * 3 SGEs for 32-bit SGLs for ldio &
1147 * 1 SGEs for 64-bit SGLs and
1148 * 2 SGEs for 32-bit SGLs for pthru frame
1149 */
1150 if (unlikely(frame_type == PTHRU_FRAME)) {
1151 if (instance->flag_ieee == 1) {
1152 num_cnt = sge_count - 1;
1153 } else if (IS_DMA64)
1154 num_cnt = sge_count - 1;
1155 else
1156 num_cnt = sge_count - 2;
1157 } else {
1158 if (instance->flag_ieee == 1) {
1159 num_cnt = sge_count - 1;
1160 } else if (IS_DMA64)
1161 num_cnt = sge_count - 2;
1162 else
1163 num_cnt = sge_count - 3;
1164 }
1165
1166 if(num_cnt>0){
1167 sge_bytes = sge_sz * num_cnt;
1168
1169 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
1170 ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
1171 }
1172 /* Main frame */
1173 frame_count +=1;
1174
1175 if (frame_count > 7)
1176 frame_count = 8;
1177 return frame_count;
1178 }
1179
1180 /**
1181 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
1182 * @instance: Adapter soft state
1183 * @scp: SCSI command
1184 * @cmd: Command to be prepared in
1185 *
1186 * This function prepares CDB commands. These are typcially pass-through
1187 * commands to the devices.
1188 */
1189 static int
1190 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
1191 struct megasas_cmd *cmd)
1192 {
1193 u32 is_logical;
1194 u32 device_id;
1195 u16 flags = 0;
1196 struct megasas_pthru_frame *pthru;
1197
1198 is_logical = MEGASAS_IS_LOGICAL(scp);
1199 device_id = MEGASAS_DEV_INDEX(instance, scp);
1200 pthru = (struct megasas_pthru_frame *)cmd->frame;
1201
1202 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1203 flags = MFI_FRAME_DIR_WRITE;
1204 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1205 flags = MFI_FRAME_DIR_READ;
1206 else if (scp->sc_data_direction == PCI_DMA_NONE)
1207 flags = MFI_FRAME_DIR_NONE;
1208
1209 if (instance->flag_ieee == 1) {
1210 flags |= MFI_FRAME_IEEE;
1211 }
1212
1213 /*
1214 * Prepare the DCDB frame
1215 */
1216 pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
1217 pthru->cmd_status = 0x0;
1218 pthru->scsi_status = 0x0;
1219 pthru->target_id = device_id;
1220 pthru->lun = scp->device->lun;
1221 pthru->cdb_len = scp->cmd_len;
1222 pthru->timeout = 0;
1223 pthru->pad_0 = 0;
1224 pthru->flags = cpu_to_le16(flags);
1225 pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp));
1226
1227 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1228
1229 /*
1230 * If the command is for the tape device, set the
1231 * pthru timeout to the os layer timeout value.
1232 */
1233 if (scp->device->type == TYPE_TAPE) {
1234 if ((scp->request->timeout / HZ) > 0xFFFF)
1235 pthru->timeout = 0xFFFF;
1236 else
1237 pthru->timeout = cpu_to_le16(scp->request->timeout / HZ);
1238 }
1239
1240 /*
1241 * Construct SGL
1242 */
1243 if (instance->flag_ieee == 1) {
1244 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1245 pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
1246 &pthru->sgl);
1247 } else if (IS_DMA64) {
1248 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1249 pthru->sge_count = megasas_make_sgl64(instance, scp,
1250 &pthru->sgl);
1251 } else
1252 pthru->sge_count = megasas_make_sgl32(instance, scp,
1253 &pthru->sgl);
1254
1255 if (pthru->sge_count > instance->max_num_sge) {
1256 printk(KERN_ERR "megasas: DCDB two many SGE NUM=%x\n",
1257 pthru->sge_count);
1258 return 0;
1259 }
1260
1261 /*
1262 * Sense info specific
1263 */
1264 pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
1265 pthru->sense_buf_phys_addr_hi =
1266 cpu_to_le32(upper_32_bits(cmd->sense_phys_addr));
1267 pthru->sense_buf_phys_addr_lo =
1268 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
1269
1270 /*
1271 * Compute the total number of frames this command consumes. FW uses
1272 * this number to pull sufficient number of frames from host memory.
1273 */
1274 cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
1275 PTHRU_FRAME);
1276
1277 return cmd->frame_count;
1278 }
1279
1280 /**
1281 * megasas_build_ldio - Prepares IOs to logical devices
1282 * @instance: Adapter soft state
1283 * @scp: SCSI command
1284 * @cmd: Command to be prepared
1285 *
1286 * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1287 */
1288 static int
1289 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1290 struct megasas_cmd *cmd)
1291 {
1292 u32 device_id;
1293 u8 sc = scp->cmnd[0];
1294 u16 flags = 0;
1295 struct megasas_io_frame *ldio;
1296
1297 device_id = MEGASAS_DEV_INDEX(instance, scp);
1298 ldio = (struct megasas_io_frame *)cmd->frame;
1299
1300 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1301 flags = MFI_FRAME_DIR_WRITE;
1302 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1303 flags = MFI_FRAME_DIR_READ;
1304
1305 if (instance->flag_ieee == 1) {
1306 flags |= MFI_FRAME_IEEE;
1307 }
1308
1309 /*
1310 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
1311 */
1312 ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
1313 ldio->cmd_status = 0x0;
1314 ldio->scsi_status = 0x0;
1315 ldio->target_id = device_id;
1316 ldio->timeout = 0;
1317 ldio->reserved_0 = 0;
1318 ldio->pad_0 = 0;
1319 ldio->flags = cpu_to_le16(flags);
1320 ldio->start_lba_hi = 0;
1321 ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
1322
1323 /*
1324 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1325 */
1326 if (scp->cmd_len == 6) {
1327 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]);
1328 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) |
1329 ((u32) scp->cmnd[2] << 8) |
1330 (u32) scp->cmnd[3]);
1331
1332 ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF);
1333 }
1334
1335 /*
1336 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1337 */
1338 else if (scp->cmd_len == 10) {
1339 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] |
1340 ((u32) scp->cmnd[7] << 8));
1341 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1342 ((u32) scp->cmnd[3] << 16) |
1343 ((u32) scp->cmnd[4] << 8) |
1344 (u32) scp->cmnd[5]);
1345 }
1346
1347 /*
1348 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1349 */
1350 else if (scp->cmd_len == 12) {
1351 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1352 ((u32) scp->cmnd[7] << 16) |
1353 ((u32) scp->cmnd[8] << 8) |
1354 (u32) scp->cmnd[9]);
1355
1356 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1357 ((u32) scp->cmnd[3] << 16) |
1358 ((u32) scp->cmnd[4] << 8) |
1359 (u32) scp->cmnd[5]);
1360 }
1361
1362 /*
1363 * 16-byte READ(0x88) or WRITE(0x8A) cdb
1364 */
1365 else if (scp->cmd_len == 16) {
1366 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) |
1367 ((u32) scp->cmnd[11] << 16) |
1368 ((u32) scp->cmnd[12] << 8) |
1369 (u32) scp->cmnd[13]);
1370
1371 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1372 ((u32) scp->cmnd[7] << 16) |
1373 ((u32) scp->cmnd[8] << 8) |
1374 (u32) scp->cmnd[9]);
1375
1376 ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1377 ((u32) scp->cmnd[3] << 16) |
1378 ((u32) scp->cmnd[4] << 8) |
1379 (u32) scp->cmnd[5]);
1380
1381 }
1382
1383 /*
1384 * Construct SGL
1385 */
1386 if (instance->flag_ieee) {
1387 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1388 ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
1389 &ldio->sgl);
1390 } else if (IS_DMA64) {
1391 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1392 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
1393 } else
1394 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
1395
1396 if (ldio->sge_count > instance->max_num_sge) {
1397 printk(KERN_ERR "megasas: build_ld_io: sge_count = %x\n",
1398 ldio->sge_count);
1399 return 0;
1400 }
1401
1402 /*
1403 * Sense info specific
1404 */
1405 ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
1406 ldio->sense_buf_phys_addr_hi = 0;
1407 ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr);
1408
1409 /*
1410 * Compute the total number of frames this command consumes. FW uses
1411 * this number to pull sufficient number of frames from host memory.
1412 */
1413 cmd->frame_count = megasas_get_frame_count(instance,
1414 ldio->sge_count, IO_FRAME);
1415
1416 return cmd->frame_count;
1417 }
1418
1419 /**
1420 * megasas_is_ldio - Checks if the cmd is for logical drive
1421 * @scmd: SCSI command
1422 *
1423 * Called by megasas_queue_command to find out if the command to be queued
1424 * is a logical drive command
1425 */
1426 inline int megasas_is_ldio(struct scsi_cmnd *cmd)
1427 {
1428 if (!MEGASAS_IS_LOGICAL(cmd))
1429 return 0;
1430 switch (cmd->cmnd[0]) {
1431 case READ_10:
1432 case WRITE_10:
1433 case READ_12:
1434 case WRITE_12:
1435 case READ_6:
1436 case WRITE_6:
1437 case READ_16:
1438 case WRITE_16:
1439 return 1;
1440 default:
1441 return 0;
1442 }
1443 }
1444
1445 /**
1446 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds
1447 * in FW
1448 * @instance: Adapter soft state
1449 */
1450 static inline void
1451 megasas_dump_pending_frames(struct megasas_instance *instance)
1452 {
1453 struct megasas_cmd *cmd;
1454 int i,n;
1455 union megasas_sgl *mfi_sgl;
1456 struct megasas_io_frame *ldio;
1457 struct megasas_pthru_frame *pthru;
1458 u32 sgcount;
1459 u32 max_cmd = instance->max_fw_cmds;
1460
1461 printk(KERN_ERR "\nmegasas[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
1462 printk(KERN_ERR "megasas[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1463 if (IS_DMA64)
1464 printk(KERN_ERR "\nmegasas[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1465 else
1466 printk(KERN_ERR "\nmegasas[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1467
1468 printk(KERN_ERR "megasas[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1469 for (i = 0; i < max_cmd; i++) {
1470 cmd = instance->cmd_list[i];
1471 if(!cmd->scmd)
1472 continue;
1473 printk(KERN_ERR "megasas[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
1474 if (megasas_is_ldio(cmd->scmd)){
1475 ldio = (struct megasas_io_frame *)cmd->frame;
1476 mfi_sgl = &ldio->sgl;
1477 sgcount = ldio->sge_count;
1478 printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x,"
1479 " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1480 instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id,
1481 le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi),
1482 le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount);
1483 }
1484 else {
1485 pthru = (struct megasas_pthru_frame *) cmd->frame;
1486 mfi_sgl = &pthru->sgl;
1487 sgcount = pthru->sge_count;
1488 printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, "
1489 "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1490 instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id,
1491 pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len),
1492 le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount);
1493 }
1494 if(megasas_dbg_lvl & MEGASAS_DBG_LVL){
1495 for (n = 0; n < sgcount; n++){
1496 if (IS_DMA64)
1497 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%llx ",
1498 le32_to_cpu(mfi_sgl->sge64[n].length),
1499 le64_to_cpu(mfi_sgl->sge64[n].phys_addr));
1500 else
1501 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%x ",
1502 le32_to_cpu(mfi_sgl->sge32[n].length),
1503 le32_to_cpu(mfi_sgl->sge32[n].phys_addr));
1504 }
1505 }
1506 printk(KERN_ERR "\n");
1507 } /*for max_cmd*/
1508 printk(KERN_ERR "\nmegasas[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1509 for (i = 0; i < max_cmd; i++) {
1510
1511 cmd = instance->cmd_list[i];
1512
1513 if(cmd->sync_cmd == 1){
1514 printk(KERN_ERR "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1515 }
1516 }
1517 printk(KERN_ERR "megasas[%d]: Dumping Done.\n\n",instance->host->host_no);
1518 }
1519
1520 u32
1521 megasas_build_and_issue_cmd(struct megasas_instance *instance,
1522 struct scsi_cmnd *scmd)
1523 {
1524 struct megasas_cmd *cmd;
1525 u32 frame_count;
1526
1527 cmd = megasas_get_cmd(instance);
1528 if (!cmd)
1529 return SCSI_MLQUEUE_HOST_BUSY;
1530
1531 /*
1532 * Logical drive command
1533 */
1534 if (megasas_is_ldio(scmd))
1535 frame_count = megasas_build_ldio(instance, scmd, cmd);
1536 else
1537 frame_count = megasas_build_dcdb(instance, scmd, cmd);
1538
1539 if (!frame_count)
1540 goto out_return_cmd;
1541
1542 cmd->scmd = scmd;
1543 scmd->SCp.ptr = (char *)cmd;
1544
1545 /*
1546 * Issue the command to the FW
1547 */
1548 atomic_inc(&instance->fw_outstanding);
1549
1550 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
1551 cmd->frame_count-1, instance->reg_set);
1552
1553 return 0;
1554 out_return_cmd:
1555 megasas_return_cmd(instance, cmd);
1556 return 1;
1557 }
1558
1559
1560 /**
1561 * megasas_queue_command - Queue entry point
1562 * @scmd: SCSI command to be queued
1563 * @done: Callback entry point
1564 */
1565 static int
1566 megasas_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
1567 {
1568 struct megasas_instance *instance;
1569 unsigned long flags;
1570
1571 instance = (struct megasas_instance *)
1572 scmd->device->host->hostdata;
1573
1574 if (instance->unload == 1) {
1575 scmd->result = DID_NO_CONNECT << 16;
1576 scmd->scsi_done(scmd);
1577 return 0;
1578 }
1579
1580 if (instance->issuepend_done == 0)
1581 return SCSI_MLQUEUE_HOST_BUSY;
1582
1583 spin_lock_irqsave(&instance->hba_lock, flags);
1584
1585 /* Check for an mpio path and adjust behavior */
1586 if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) {
1587 if (megasas_check_mpio_paths(instance, scmd) ==
1588 (DID_RESET << 16)) {
1589 spin_unlock_irqrestore(&instance->hba_lock, flags);
1590 return SCSI_MLQUEUE_HOST_BUSY;
1591 } else {
1592 spin_unlock_irqrestore(&instance->hba_lock, flags);
1593 scmd->result = DID_NO_CONNECT << 16;
1594 scmd->scsi_done(scmd);
1595 return 0;
1596 }
1597 }
1598
1599 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
1600 spin_unlock_irqrestore(&instance->hba_lock, flags);
1601 scmd->result = DID_NO_CONNECT << 16;
1602 scmd->scsi_done(scmd);
1603 return 0;
1604 }
1605
1606 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
1607 spin_unlock_irqrestore(&instance->hba_lock, flags);
1608 return SCSI_MLQUEUE_HOST_BUSY;
1609 }
1610
1611 spin_unlock_irqrestore(&instance->hba_lock, flags);
1612
1613 scmd->result = 0;
1614
1615 if (MEGASAS_IS_LOGICAL(scmd) &&
1616 (scmd->device->id >= instance->fw_supported_vd_count ||
1617 scmd->device->lun)) {
1618 scmd->result = DID_BAD_TARGET << 16;
1619 goto out_done;
1620 }
1621
1622 switch (scmd->cmnd[0]) {
1623 case SYNCHRONIZE_CACHE:
1624 /*
1625 * FW takes care of flush cache on its own
1626 * No need to send it down
1627 */
1628 scmd->result = DID_OK << 16;
1629 goto out_done;
1630 default:
1631 break;
1632 }
1633
1634 if (instance->instancet->build_and_issue_cmd(instance, scmd)) {
1635 printk(KERN_ERR "megasas: Err returned from build_and_issue_cmd\n");
1636 return SCSI_MLQUEUE_HOST_BUSY;
1637 }
1638
1639 return 0;
1640
1641 out_done:
1642 scmd->scsi_done(scmd);
1643 return 0;
1644 }
1645
1646 static struct megasas_instance *megasas_lookup_instance(u16 host_no)
1647 {
1648 int i;
1649
1650 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
1651
1652 if ((megasas_mgmt_info.instance[i]) &&
1653 (megasas_mgmt_info.instance[i]->host->host_no == host_no))
1654 return megasas_mgmt_info.instance[i];
1655 }
1656
1657 return NULL;
1658 }
1659
1660 static int megasas_slave_configure(struct scsi_device *sdev)
1661 {
1662 /*
1663 * The RAID firmware may require extended timeouts.
1664 */
1665 blk_queue_rq_timeout(sdev->request_queue,
1666 MEGASAS_DEFAULT_CMD_TIMEOUT * HZ);
1667
1668 return 0;
1669 }
1670
1671 static int megasas_slave_alloc(struct scsi_device *sdev)
1672 {
1673 u16 pd_index = 0;
1674 struct megasas_instance *instance ;
1675 instance = megasas_lookup_instance(sdev->host->host_no);
1676 if (sdev->channel < MEGASAS_MAX_PD_CHANNELS) {
1677 /*
1678 * Open the OS scan to the SYSTEM PD
1679 */
1680 pd_index =
1681 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1682 sdev->id;
1683 if (instance->pd_list[pd_index].driveState ==
1684 MR_PD_STATE_SYSTEM) {
1685 return 0;
1686 }
1687 return -ENXIO;
1688 }
1689 return 0;
1690 }
1691
1692 void megaraid_sas_kill_hba(struct megasas_instance *instance)
1693 {
1694 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
1695 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
1696 (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
1697 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) ||
1698 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
1699 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
1700 writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
1701 /* Flush */
1702 readl(&instance->reg_set->doorbell);
1703 if (instance->mpio && instance->requestorId)
1704 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
1705 } else {
1706 writel(MFI_STOP_ADP, &instance->reg_set->inbound_doorbell);
1707 }
1708 }
1709
1710 /**
1711 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
1712 * restored to max value
1713 * @instance: Adapter soft state
1714 *
1715 */
1716 void
1717 megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
1718 {
1719 unsigned long flags;
1720 if (instance->flag & MEGASAS_FW_BUSY
1721 && time_after(jiffies, instance->last_time + 5 * HZ)
1722 && atomic_read(&instance->fw_outstanding) <
1723 instance->throttlequeuedepth + 1) {
1724
1725 spin_lock_irqsave(instance->host->host_lock, flags);
1726 instance->flag &= ~MEGASAS_FW_BUSY;
1727 if (instance->is_imr) {
1728 instance->host->can_queue =
1729 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS;
1730 } else
1731 instance->host->can_queue =
1732 instance->max_fw_cmds - MEGASAS_INT_CMDS;
1733
1734 spin_unlock_irqrestore(instance->host->host_lock, flags);
1735 }
1736 }
1737
1738 /**
1739 * megasas_complete_cmd_dpc - Returns FW's controller structure
1740 * @instance_addr: Address of adapter soft state
1741 *
1742 * Tasklet to complete cmds
1743 */
1744 static void megasas_complete_cmd_dpc(unsigned long instance_addr)
1745 {
1746 u32 producer;
1747 u32 consumer;
1748 u32 context;
1749 struct megasas_cmd *cmd;
1750 struct megasas_instance *instance =
1751 (struct megasas_instance *)instance_addr;
1752 unsigned long flags;
1753
1754 /* If we have already declared adapter dead, donot complete cmds */
1755 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR )
1756 return;
1757
1758 spin_lock_irqsave(&instance->completion_lock, flags);
1759
1760 producer = le32_to_cpu(*instance->producer);
1761 consumer = le32_to_cpu(*instance->consumer);
1762
1763 while (consumer != producer) {
1764 context = le32_to_cpu(instance->reply_queue[consumer]);
1765 if (context >= instance->max_fw_cmds) {
1766 printk(KERN_ERR "Unexpected context value %x\n",
1767 context);
1768 BUG();
1769 }
1770
1771 cmd = instance->cmd_list[context];
1772
1773 megasas_complete_cmd(instance, cmd, DID_OK);
1774
1775 consumer++;
1776 if (consumer == (instance->max_fw_cmds + 1)) {
1777 consumer = 0;
1778 }
1779 }
1780
1781 *instance->consumer = cpu_to_le32(producer);
1782
1783 spin_unlock_irqrestore(&instance->completion_lock, flags);
1784
1785 /*
1786 * Check if we can restore can_queue
1787 */
1788 megasas_check_and_restore_queue_depth(instance);
1789 }
1790
1791 /**
1792 * megasas_start_timer - Initializes a timer object
1793 * @instance: Adapter soft state
1794 * @timer: timer object to be initialized
1795 * @fn: timer function
1796 * @interval: time interval between timer function call
1797 *
1798 */
1799 void megasas_start_timer(struct megasas_instance *instance,
1800 struct timer_list *timer,
1801 void *fn, unsigned long interval)
1802 {
1803 init_timer(timer);
1804 timer->expires = jiffies + interval;
1805 timer->data = (unsigned long)instance;
1806 timer->function = fn;
1807 add_timer(timer);
1808 }
1809
1810 static void
1811 megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
1812
1813 static void
1814 process_fw_state_change_wq(struct work_struct *work);
1815
1816 void megasas_do_ocr(struct megasas_instance *instance)
1817 {
1818 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
1819 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
1820 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
1821 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
1822 }
1823 instance->instancet->disable_intr(instance);
1824 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
1825 instance->issuepend_done = 0;
1826
1827 atomic_set(&instance->fw_outstanding, 0);
1828 megasas_internal_reset_defer_cmds(instance);
1829 process_fw_state_change_wq(&instance->work_init);
1830 }
1831
1832 static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance,
1833 int initial)
1834 {
1835 struct megasas_cmd *cmd;
1836 struct megasas_dcmd_frame *dcmd;
1837 struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL;
1838 dma_addr_t new_affiliation_111_h;
1839 int ld, retval = 0;
1840 u8 thisVf;
1841
1842 cmd = megasas_get_cmd(instance);
1843
1844 if (!cmd) {
1845 printk(KERN_DEBUG "megasas: megasas_get_ld_vf_affiliation_111:"
1846 "Failed to get cmd for scsi%d.\n",
1847 instance->host->host_no);
1848 return -ENOMEM;
1849 }
1850
1851 dcmd = &cmd->frame->dcmd;
1852
1853 if (!instance->vf_affiliation_111) {
1854 printk(KERN_WARNING "megasas: SR-IOV: Couldn't get LD/VF "
1855 "affiliation for scsi%d.\n", instance->host->host_no);
1856 megasas_return_cmd(instance, cmd);
1857 return -ENOMEM;
1858 }
1859
1860 if (initial)
1861 memset(instance->vf_affiliation_111, 0,
1862 sizeof(struct MR_LD_VF_AFFILIATION_111));
1863 else {
1864 new_affiliation_111 =
1865 pci_alloc_consistent(instance->pdev,
1866 sizeof(struct MR_LD_VF_AFFILIATION_111),
1867 &new_affiliation_111_h);
1868 if (!new_affiliation_111) {
1869 printk(KERN_DEBUG "megasas: SR-IOV: Couldn't allocate "
1870 "memory for new affiliation for scsi%d.\n",
1871 instance->host->host_no);
1872 megasas_return_cmd(instance, cmd);
1873 return -ENOMEM;
1874 }
1875 memset(new_affiliation_111, 0,
1876 sizeof(struct MR_LD_VF_AFFILIATION_111));
1877 }
1878
1879 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1880
1881 dcmd->cmd = MFI_CMD_DCMD;
1882 dcmd->cmd_status = 0xFF;
1883 dcmd->sge_count = 1;
1884 dcmd->flags = MFI_FRAME_DIR_BOTH;
1885 dcmd->timeout = 0;
1886 dcmd->pad_0 = 0;
1887 dcmd->data_xfer_len = sizeof(struct MR_LD_VF_AFFILIATION_111);
1888 dcmd->opcode = MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111;
1889
1890 if (initial)
1891 dcmd->sgl.sge32[0].phys_addr =
1892 instance->vf_affiliation_111_h;
1893 else
1894 dcmd->sgl.sge32[0].phys_addr = new_affiliation_111_h;
1895
1896 dcmd->sgl.sge32[0].length =
1897 sizeof(struct MR_LD_VF_AFFILIATION_111);
1898
1899 printk(KERN_WARNING "megasas: SR-IOV: Getting LD/VF affiliation for "
1900 "scsi%d\n", instance->host->host_no);
1901
1902 megasas_issue_blocked_cmd(instance, cmd, 0);
1903
1904 if (dcmd->cmd_status) {
1905 printk(KERN_WARNING "megasas: SR-IOV: LD/VF affiliation DCMD"
1906 " failed with status 0x%x for scsi%d.\n",
1907 dcmd->cmd_status, instance->host->host_no);
1908 retval = 1; /* Do a scan if we couldn't get affiliation */
1909 goto out;
1910 }
1911
1912 if (!initial) {
1913 thisVf = new_affiliation_111->thisVf;
1914 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++)
1915 if (instance->vf_affiliation_111->map[ld].policy[thisVf] !=
1916 new_affiliation_111->map[ld].policy[thisVf]) {
1917 printk(KERN_WARNING "megasas: SR-IOV: "
1918 "Got new LD/VF affiliation "
1919 "for scsi%d.\n",
1920 instance->host->host_no);
1921 memcpy(instance->vf_affiliation_111,
1922 new_affiliation_111,
1923 sizeof(struct MR_LD_VF_AFFILIATION_111));
1924 retval = 1;
1925 goto out;
1926 }
1927 }
1928 out:
1929 if (new_affiliation_111) {
1930 pci_free_consistent(instance->pdev,
1931 sizeof(struct MR_LD_VF_AFFILIATION_111),
1932 new_affiliation_111,
1933 new_affiliation_111_h);
1934 }
1935
1936 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
1937 megasas_return_mfi_mpt_pthr(instance, cmd,
1938 cmd->mpt_pthr_cmd_blocked);
1939 else
1940 megasas_return_cmd(instance, cmd);
1941
1942 return retval;
1943 }
1944
1945 static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance,
1946 int initial)
1947 {
1948 struct megasas_cmd *cmd;
1949 struct megasas_dcmd_frame *dcmd;
1950 struct MR_LD_VF_AFFILIATION *new_affiliation = NULL;
1951 struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL;
1952 dma_addr_t new_affiliation_h;
1953 int i, j, retval = 0, found = 0, doscan = 0;
1954 u8 thisVf;
1955
1956 cmd = megasas_get_cmd(instance);
1957
1958 if (!cmd) {
1959 printk(KERN_DEBUG "megasas: megasas_get_ld_vf_affiliation12: "
1960 "Failed to get cmd for scsi%d.\n",
1961 instance->host->host_no);
1962 return -ENOMEM;
1963 }
1964
1965 dcmd = &cmd->frame->dcmd;
1966
1967 if (!instance->vf_affiliation) {
1968 printk(KERN_WARNING "megasas: SR-IOV: Couldn't get LD/VF "
1969 "affiliation for scsi%d.\n", instance->host->host_no);
1970 megasas_return_cmd(instance, cmd);
1971 return -ENOMEM;
1972 }
1973
1974 if (initial)
1975 memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
1976 sizeof(struct MR_LD_VF_AFFILIATION));
1977 else {
1978 new_affiliation =
1979 pci_alloc_consistent(instance->pdev,
1980 (MAX_LOGICAL_DRIVES + 1) *
1981 sizeof(struct MR_LD_VF_AFFILIATION),
1982 &new_affiliation_h);
1983 if (!new_affiliation) {
1984 printk(KERN_DEBUG "megasas: SR-IOV: Couldn't allocate "
1985 "memory for new affiliation for scsi%d.\n",
1986 instance->host->host_no);
1987 megasas_return_cmd(instance, cmd);
1988 return -ENOMEM;
1989 }
1990 memset(new_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
1991 sizeof(struct MR_LD_VF_AFFILIATION));
1992 }
1993
1994 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1995
1996 dcmd->cmd = MFI_CMD_DCMD;
1997 dcmd->cmd_status = 0xFF;
1998 dcmd->sge_count = 1;
1999 dcmd->flags = MFI_FRAME_DIR_BOTH;
2000 dcmd->timeout = 0;
2001 dcmd->pad_0 = 0;
2002 dcmd->data_xfer_len = (MAX_LOGICAL_DRIVES + 1) *
2003 sizeof(struct MR_LD_VF_AFFILIATION);
2004 dcmd->opcode = MR_DCMD_LD_VF_MAP_GET_ALL_LDS;
2005
2006 if (initial)
2007 dcmd->sgl.sge32[0].phys_addr = instance->vf_affiliation_h;
2008 else
2009 dcmd->sgl.sge32[0].phys_addr = new_affiliation_h;
2010
2011 dcmd->sgl.sge32[0].length = (MAX_LOGICAL_DRIVES + 1) *
2012 sizeof(struct MR_LD_VF_AFFILIATION);
2013
2014 printk(KERN_WARNING "megasas: SR-IOV: Getting LD/VF affiliation for "
2015 "scsi%d\n", instance->host->host_no);
2016
2017 megasas_issue_blocked_cmd(instance, cmd, 0);
2018
2019 if (dcmd->cmd_status) {
2020 printk(KERN_WARNING "megasas: SR-IOV: LD/VF affiliation DCMD"
2021 " failed with status 0x%x for scsi%d.\n",
2022 dcmd->cmd_status, instance->host->host_no);
2023 retval = 1; /* Do a scan if we couldn't get affiliation */
2024 goto out;
2025 }
2026
2027 if (!initial) {
2028 if (!new_affiliation->ldCount) {
2029 printk(KERN_WARNING "megasas: SR-IOV: Got new LD/VF "
2030 "affiliation for passive path for scsi%d.\n",
2031 instance->host->host_no);
2032 retval = 1;
2033 goto out;
2034 }
2035 newmap = new_affiliation->map;
2036 savedmap = instance->vf_affiliation->map;
2037 thisVf = new_affiliation->thisVf;
2038 for (i = 0 ; i < new_affiliation->ldCount; i++) {
2039 found = 0;
2040 for (j = 0; j < instance->vf_affiliation->ldCount;
2041 j++) {
2042 if (newmap->ref.targetId ==
2043 savedmap->ref.targetId) {
2044 found = 1;
2045 if (newmap->policy[thisVf] !=
2046 savedmap->policy[thisVf]) {
2047 doscan = 1;
2048 goto out;
2049 }
2050 }
2051 savedmap = (struct MR_LD_VF_MAP *)
2052 ((unsigned char *)savedmap +
2053 savedmap->size);
2054 }
2055 if (!found && newmap->policy[thisVf] !=
2056 MR_LD_ACCESS_HIDDEN) {
2057 doscan = 1;
2058 goto out;
2059 }
2060 newmap = (struct MR_LD_VF_MAP *)
2061 ((unsigned char *)newmap + newmap->size);
2062 }
2063
2064 newmap = new_affiliation->map;
2065 savedmap = instance->vf_affiliation->map;
2066
2067 for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) {
2068 found = 0;
2069 for (j = 0 ; j < new_affiliation->ldCount; j++) {
2070 if (savedmap->ref.targetId ==
2071 newmap->ref.targetId) {
2072 found = 1;
2073 if (savedmap->policy[thisVf] !=
2074 newmap->policy[thisVf]) {
2075 doscan = 1;
2076 goto out;
2077 }
2078 }
2079 newmap = (struct MR_LD_VF_MAP *)
2080 ((unsigned char *)newmap +
2081 newmap->size);
2082 }
2083 if (!found && savedmap->policy[thisVf] !=
2084 MR_LD_ACCESS_HIDDEN) {
2085 doscan = 1;
2086 goto out;
2087 }
2088 savedmap = (struct MR_LD_VF_MAP *)
2089 ((unsigned char *)savedmap +
2090 savedmap->size);
2091 }
2092 }
2093 out:
2094 if (doscan) {
2095 printk(KERN_WARNING "megasas: SR-IOV: Got new LD/VF "
2096 "affiliation for scsi%d.\n", instance->host->host_no);
2097 memcpy(instance->vf_affiliation, new_affiliation,
2098 new_affiliation->size);
2099 retval = 1;
2100 }
2101
2102 if (new_affiliation)
2103 pci_free_consistent(instance->pdev,
2104 (MAX_LOGICAL_DRIVES + 1) *
2105 sizeof(struct MR_LD_VF_AFFILIATION),
2106 new_affiliation, new_affiliation_h);
2107 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
2108 megasas_return_mfi_mpt_pthr(instance, cmd,
2109 cmd->mpt_pthr_cmd_blocked);
2110 else
2111 megasas_return_cmd(instance, cmd);
2112
2113 return retval;
2114 }
2115
2116 /* This function will get the current SR-IOV LD/VF affiliation */
2117 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
2118 int initial)
2119 {
2120 int retval;
2121
2122 if (instance->PlasmaFW111)
2123 retval = megasas_get_ld_vf_affiliation_111(instance, initial);
2124 else
2125 retval = megasas_get_ld_vf_affiliation_12(instance, initial);
2126 return retval;
2127 }
2128
2129 /* This function will tell FW to start the SR-IOV heartbeat */
2130 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
2131 int initial)
2132 {
2133 struct megasas_cmd *cmd;
2134 struct megasas_dcmd_frame *dcmd;
2135 int retval = 0;
2136
2137 cmd = megasas_get_cmd(instance);
2138
2139 if (!cmd) {
2140 printk(KERN_DEBUG "megasas: megasas_sriov_start_heartbeat: "
2141 "Failed to get cmd for scsi%d.\n",
2142 instance->host->host_no);
2143 return -ENOMEM;
2144 }
2145
2146 dcmd = &cmd->frame->dcmd;
2147
2148 if (initial) {
2149 instance->hb_host_mem =
2150 pci_zalloc_consistent(instance->pdev,
2151 sizeof(struct MR_CTRL_HB_HOST_MEM),
2152 &instance->hb_host_mem_h);
2153 if (!instance->hb_host_mem) {
2154 printk(KERN_DEBUG "megasas: SR-IOV: Couldn't allocate"
2155 " memory for heartbeat host memory for "
2156 "scsi%d.\n", instance->host->host_no);
2157 retval = -ENOMEM;
2158 goto out;
2159 }
2160 }
2161
2162 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2163
2164 dcmd->mbox.s[0] = sizeof(struct MR_CTRL_HB_HOST_MEM);
2165 dcmd->cmd = MFI_CMD_DCMD;
2166 dcmd->cmd_status = 0xFF;
2167 dcmd->sge_count = 1;
2168 dcmd->flags = MFI_FRAME_DIR_BOTH;
2169 dcmd->timeout = 0;
2170 dcmd->pad_0 = 0;
2171 dcmd->data_xfer_len = sizeof(struct MR_CTRL_HB_HOST_MEM);
2172 dcmd->opcode = MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC;
2173 dcmd->sgl.sge32[0].phys_addr = instance->hb_host_mem_h;
2174 dcmd->sgl.sge32[0].length = sizeof(struct MR_CTRL_HB_HOST_MEM);
2175
2176 printk(KERN_WARNING "megasas: SR-IOV: Starting heartbeat for scsi%d\n",
2177 instance->host->host_no);
2178
2179 if (!megasas_issue_polled(instance, cmd)) {
2180 retval = 0;
2181 } else {
2182 printk(KERN_WARNING "megasas: SR-IOV: MR_DCMD_CTRL_SHARED_HOST"
2183 "_MEM_ALLOC DCMD timed out for scsi%d\n",
2184 instance->host->host_no);
2185 retval = 1;
2186 goto out;
2187 }
2188
2189
2190 if (dcmd->cmd_status) {
2191 printk(KERN_WARNING "megasas: SR-IOV: MR_DCMD_CTRL_SHARED_HOST"
2192 "_MEM_ALLOC DCMD failed with status 0x%x for scsi%d\n",
2193 dcmd->cmd_status,
2194 instance->host->host_no);
2195 retval = 1;
2196 goto out;
2197 }
2198
2199 out:
2200 megasas_return_cmd(instance, cmd);
2201
2202 return retval;
2203 }
2204
2205 /* Handler for SR-IOV heartbeat */
2206 void megasas_sriov_heartbeat_handler(unsigned long instance_addr)
2207 {
2208 struct megasas_instance *instance =
2209 (struct megasas_instance *)instance_addr;
2210
2211 if (instance->hb_host_mem->HB.fwCounter !=
2212 instance->hb_host_mem->HB.driverCounter) {
2213 instance->hb_host_mem->HB.driverCounter =
2214 instance->hb_host_mem->HB.fwCounter;
2215 mod_timer(&instance->sriov_heartbeat_timer,
2216 jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
2217 } else {
2218 printk(KERN_WARNING "megasas: SR-IOV: Heartbeat never "
2219 "completed for scsi%d\n", instance->host->host_no);
2220 schedule_work(&instance->work_init);
2221 }
2222 }
2223
2224 /**
2225 * megasas_wait_for_outstanding - Wait for all outstanding cmds
2226 * @instance: Adapter soft state
2227 *
2228 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
2229 * complete all its outstanding commands. Returns error if one or more IOs
2230 * are pending after this time period. It also marks the controller dead.
2231 */
2232 static int megasas_wait_for_outstanding(struct megasas_instance *instance)
2233 {
2234 int i;
2235 u32 reset_index;
2236 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
2237 u8 adprecovery;
2238 unsigned long flags;
2239 struct list_head clist_local;
2240 struct megasas_cmd *reset_cmd;
2241 u32 fw_state;
2242 u8 kill_adapter_flag;
2243
2244 spin_lock_irqsave(&instance->hba_lock, flags);
2245 adprecovery = instance->adprecovery;
2246 spin_unlock_irqrestore(&instance->hba_lock, flags);
2247
2248 if (adprecovery != MEGASAS_HBA_OPERATIONAL) {
2249
2250 INIT_LIST_HEAD(&clist_local);
2251 spin_lock_irqsave(&instance->hba_lock, flags);
2252 list_splice_init(&instance->internal_reset_pending_q,
2253 &clist_local);
2254 spin_unlock_irqrestore(&instance->hba_lock, flags);
2255
2256 printk(KERN_NOTICE "megasas: HBA reset wait ...\n");
2257 for (i = 0; i < wait_time; i++) {
2258 msleep(1000);
2259 spin_lock_irqsave(&instance->hba_lock, flags);
2260 adprecovery = instance->adprecovery;
2261 spin_unlock_irqrestore(&instance->hba_lock, flags);
2262 if (adprecovery == MEGASAS_HBA_OPERATIONAL)
2263 break;
2264 }
2265
2266 if (adprecovery != MEGASAS_HBA_OPERATIONAL) {
2267 printk(KERN_NOTICE "megasas: reset: Stopping HBA.\n");
2268 spin_lock_irqsave(&instance->hba_lock, flags);
2269 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
2270 spin_unlock_irqrestore(&instance->hba_lock, flags);
2271 return FAILED;
2272 }
2273
2274 reset_index = 0;
2275 while (!list_empty(&clist_local)) {
2276 reset_cmd = list_entry((&clist_local)->next,
2277 struct megasas_cmd, list);
2278 list_del_init(&reset_cmd->list);
2279 if (reset_cmd->scmd) {
2280 reset_cmd->scmd->result = DID_RESET << 16;
2281 printk(KERN_NOTICE "%d:%p reset [%02x]\n",
2282 reset_index, reset_cmd,
2283 reset_cmd->scmd->cmnd[0]);
2284
2285 reset_cmd->scmd->scsi_done(reset_cmd->scmd);
2286 megasas_return_cmd(instance, reset_cmd);
2287 } else if (reset_cmd->sync_cmd) {
2288 printk(KERN_NOTICE "megasas:%p synch cmds"
2289 "reset queue\n",
2290 reset_cmd);
2291
2292 reset_cmd->cmd_status = ENODATA;
2293 instance->instancet->fire_cmd(instance,
2294 reset_cmd->frame_phys_addr,
2295 0, instance->reg_set);
2296 } else {
2297 printk(KERN_NOTICE "megasas: %p unexpected"
2298 "cmds lst\n",
2299 reset_cmd);
2300 }
2301 reset_index++;
2302 }
2303
2304 return SUCCESS;
2305 }
2306
2307 for (i = 0; i < resetwaittime; i++) {
2308
2309 int outstanding = atomic_read(&instance->fw_outstanding);
2310
2311 if (!outstanding)
2312 break;
2313
2314 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2315 printk(KERN_NOTICE "megasas: [%2d]waiting for %d "
2316 "commands to complete\n",i,outstanding);
2317 /*
2318 * Call cmd completion routine. Cmd to be
2319 * be completed directly without depending on isr.
2320 */
2321 megasas_complete_cmd_dpc((unsigned long)instance);
2322 }
2323
2324 msleep(1000);
2325 }
2326
2327 i = 0;
2328 kill_adapter_flag = 0;
2329 do {
2330 fw_state = instance->instancet->read_fw_status_reg(
2331 instance->reg_set) & MFI_STATE_MASK;
2332 if ((fw_state == MFI_STATE_FAULT) &&
2333 (instance->disableOnlineCtrlReset == 0)) {
2334 if (i == 3) {
2335 kill_adapter_flag = 2;
2336 break;
2337 }
2338 megasas_do_ocr(instance);
2339 kill_adapter_flag = 1;
2340
2341 /* wait for 1 secs to let FW finish the pending cmds */
2342 msleep(1000);
2343 }
2344 i++;
2345 } while (i <= 3);
2346
2347 if (atomic_read(&instance->fw_outstanding) &&
2348 !kill_adapter_flag) {
2349 if (instance->disableOnlineCtrlReset == 0) {
2350
2351 megasas_do_ocr(instance);
2352
2353 /* wait for 5 secs to let FW finish the pending cmds */
2354 for (i = 0; i < wait_time; i++) {
2355 int outstanding =
2356 atomic_read(&instance->fw_outstanding);
2357 if (!outstanding)
2358 return SUCCESS;
2359 msleep(1000);
2360 }
2361 }
2362 }
2363
2364 if (atomic_read(&instance->fw_outstanding) ||
2365 (kill_adapter_flag == 2)) {
2366 printk(KERN_NOTICE "megaraid_sas: pending cmds after reset\n");
2367 /*
2368 * Send signal to FW to stop processing any pending cmds.
2369 * The controller will be taken offline by the OS now.
2370 */
2371 if ((instance->pdev->device ==
2372 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2373 (instance->pdev->device ==
2374 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
2375 writel(MFI_STOP_ADP,
2376 &instance->reg_set->doorbell);
2377 } else {
2378 writel(MFI_STOP_ADP,
2379 &instance->reg_set->inbound_doorbell);
2380 }
2381 megasas_dump_pending_frames(instance);
2382 spin_lock_irqsave(&instance->hba_lock, flags);
2383 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
2384 spin_unlock_irqrestore(&instance->hba_lock, flags);
2385 return FAILED;
2386 }
2387
2388 printk(KERN_NOTICE "megaraid_sas: no pending cmds after reset\n");
2389
2390 return SUCCESS;
2391 }
2392
2393 /**
2394 * megasas_generic_reset - Generic reset routine
2395 * @scmd: Mid-layer SCSI command
2396 *
2397 * This routine implements a generic reset handler for device, bus and host
2398 * reset requests. Device, bus and host specific reset handlers can use this
2399 * function after they do their specific tasks.
2400 */
2401 static int megasas_generic_reset(struct scsi_cmnd *scmd)
2402 {
2403 int ret_val;
2404 struct megasas_instance *instance;
2405
2406 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2407
2408 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
2409 scmd->cmnd[0], scmd->retries);
2410
2411 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
2412 printk(KERN_ERR "megasas: cannot recover from previous reset "
2413 "failures\n");
2414 return FAILED;
2415 }
2416
2417 ret_val = megasas_wait_for_outstanding(instance);
2418 if (ret_val == SUCCESS)
2419 printk(KERN_NOTICE "megasas: reset successful \n");
2420 else
2421 printk(KERN_ERR "megasas: failed to do reset\n");
2422
2423 return ret_val;
2424 }
2425
2426 /**
2427 * megasas_reset_timer - quiesce the adapter if required
2428 * @scmd: scsi cmnd
2429 *
2430 * Sets the FW busy flag and reduces the host->can_queue if the
2431 * cmd has not been completed within the timeout period.
2432 */
2433 static enum
2434 blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
2435 {
2436 struct megasas_instance *instance;
2437 unsigned long flags;
2438
2439 if (time_after(jiffies, scmd->jiffies_at_alloc +
2440 (MEGASAS_DEFAULT_CMD_TIMEOUT * 2) * HZ)) {
2441 return BLK_EH_NOT_HANDLED;
2442 }
2443
2444 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2445 if (!(instance->flag & MEGASAS_FW_BUSY)) {
2446 /* FW is busy, throttle IO */
2447 spin_lock_irqsave(instance->host->host_lock, flags);
2448
2449 instance->host->can_queue = instance->throttlequeuedepth;
2450 instance->last_time = jiffies;
2451 instance->flag |= MEGASAS_FW_BUSY;
2452
2453 spin_unlock_irqrestore(instance->host->host_lock, flags);
2454 }
2455 return BLK_EH_RESET_TIMER;
2456 }
2457
2458 /**
2459 * megasas_reset_device - Device reset handler entry point
2460 */
2461 static int megasas_reset_device(struct scsi_cmnd *scmd)
2462 {
2463 int ret;
2464
2465 /*
2466 * First wait for all commands to complete
2467 */
2468 ret = megasas_generic_reset(scmd);
2469
2470 return ret;
2471 }
2472
2473 /**
2474 * megasas_reset_bus_host - Bus & host reset handler entry point
2475 */
2476 static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
2477 {
2478 int ret;
2479 struct megasas_instance *instance;
2480 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2481
2482 /*
2483 * First wait for all commands to complete
2484 */
2485 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
2486 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) ||
2487 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
2488 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY))
2489 ret = megasas_reset_fusion(scmd->device->host, 1);
2490 else
2491 ret = megasas_generic_reset(scmd);
2492
2493 return ret;
2494 }
2495
2496 /**
2497 * megasas_bios_param - Returns disk geometry for a disk
2498 * @sdev: device handle
2499 * @bdev: block device
2500 * @capacity: drive capacity
2501 * @geom: geometry parameters
2502 */
2503 static int
2504 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
2505 sector_t capacity, int geom[])
2506 {
2507 int heads;
2508 int sectors;
2509 sector_t cylinders;
2510 unsigned long tmp;
2511 /* Default heads (64) & sectors (32) */
2512 heads = 64;
2513 sectors = 32;
2514
2515 tmp = heads * sectors;
2516 cylinders = capacity;
2517
2518 sector_div(cylinders, tmp);
2519
2520 /*
2521 * Handle extended translation size for logical drives > 1Gb
2522 */
2523
2524 if (capacity >= 0x200000) {
2525 heads = 255;
2526 sectors = 63;
2527 tmp = heads*sectors;
2528 cylinders = capacity;
2529 sector_div(cylinders, tmp);
2530 }
2531
2532 geom[0] = heads;
2533 geom[1] = sectors;
2534 geom[2] = cylinders;
2535
2536 return 0;
2537 }
2538
2539 static void megasas_aen_polling(struct work_struct *work);
2540
2541 /**
2542 * megasas_service_aen - Processes an event notification
2543 * @instance: Adapter soft state
2544 * @cmd: AEN command completed by the ISR
2545 *
2546 * For AEN, driver sends a command down to FW that is held by the FW till an
2547 * event occurs. When an event of interest occurs, FW completes the command
2548 * that it was previously holding.
2549 *
2550 * This routines sends SIGIO signal to processes that have registered with the
2551 * driver for AEN.
2552 */
2553 static void
2554 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
2555 {
2556 unsigned long flags;
2557 /*
2558 * Don't signal app if it is just an aborted previously registered aen
2559 */
2560 if ((!cmd->abort_aen) && (instance->unload == 0)) {
2561 spin_lock_irqsave(&poll_aen_lock, flags);
2562 megasas_poll_wait_aen = 1;
2563 spin_unlock_irqrestore(&poll_aen_lock, flags);
2564 wake_up(&megasas_poll_wait);
2565 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
2566 }
2567 else
2568 cmd->abort_aen = 0;
2569
2570 instance->aen_cmd = NULL;
2571
2572 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
2573 megasas_return_mfi_mpt_pthr(instance, cmd,
2574 cmd->mpt_pthr_cmd_blocked);
2575 else
2576 megasas_return_cmd(instance, cmd);
2577
2578 if ((instance->unload == 0) &&
2579 ((instance->issuepend_done == 1))) {
2580 struct megasas_aen_event *ev;
2581 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
2582 if (!ev) {
2583 printk(KERN_ERR "megasas_service_aen: out of memory\n");
2584 } else {
2585 ev->instance = instance;
2586 instance->ev = ev;
2587 INIT_DELAYED_WORK(&ev->hotplug_work,
2588 megasas_aen_polling);
2589 schedule_delayed_work(&ev->hotplug_work, 0);
2590 }
2591 }
2592 }
2593
2594 static ssize_t
2595 megasas_fw_crash_buffer_store(struct device *cdev,
2596 struct device_attribute *attr, const char *buf, size_t count)
2597 {
2598 struct Scsi_Host *shost = class_to_shost(cdev);
2599 struct megasas_instance *instance =
2600 (struct megasas_instance *) shost->hostdata;
2601 int val = 0;
2602 unsigned long flags;
2603
2604 if (kstrtoint(buf, 0, &val) != 0)
2605 return -EINVAL;
2606
2607 spin_lock_irqsave(&instance->crashdump_lock, flags);
2608 instance->fw_crash_buffer_offset = val;
2609 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2610 return strlen(buf);
2611 }
2612
2613 static ssize_t
2614 megasas_fw_crash_buffer_show(struct device *cdev,
2615 struct device_attribute *attr, char *buf)
2616 {
2617 struct Scsi_Host *shost = class_to_shost(cdev);
2618 struct megasas_instance *instance =
2619 (struct megasas_instance *) shost->hostdata;
2620 u32 size;
2621 unsigned long buff_addr;
2622 unsigned long dmachunk = CRASH_DMA_BUF_SIZE;
2623 unsigned long src_addr;
2624 unsigned long flags;
2625 u32 buff_offset;
2626
2627 spin_lock_irqsave(&instance->crashdump_lock, flags);
2628 buff_offset = instance->fw_crash_buffer_offset;
2629 if (!instance->crash_dump_buf &&
2630 !((instance->fw_crash_state == AVAILABLE) ||
2631 (instance->fw_crash_state == COPYING))) {
2632 dev_err(&instance->pdev->dev,
2633 "Firmware crash dump is not available\n");
2634 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2635 return -EINVAL;
2636 }
2637
2638 buff_addr = (unsigned long) buf;
2639
2640 if (buff_offset >
2641 (instance->fw_crash_buffer_size * dmachunk)) {
2642 dev_err(&instance->pdev->dev,
2643 "Firmware crash dump offset is out of range\n");
2644 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2645 return 0;
2646 }
2647
2648 size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset;
2649 size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size;
2650
2651 src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] +
2652 (buff_offset % dmachunk);
2653 memcpy(buf, (void *)src_addr, size);
2654 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2655
2656 return size;
2657 }
2658
2659 static ssize_t
2660 megasas_fw_crash_buffer_size_show(struct device *cdev,
2661 struct device_attribute *attr, char *buf)
2662 {
2663 struct Scsi_Host *shost = class_to_shost(cdev);
2664 struct megasas_instance *instance =
2665 (struct megasas_instance *) shost->hostdata;
2666
2667 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)
2668 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE);
2669 }
2670
2671 static ssize_t
2672 megasas_fw_crash_state_store(struct device *cdev,
2673 struct device_attribute *attr, const char *buf, size_t count)
2674 {
2675 struct Scsi_Host *shost = class_to_shost(cdev);
2676 struct megasas_instance *instance =
2677 (struct megasas_instance *) shost->hostdata;
2678 int val = 0;
2679 unsigned long flags;
2680
2681 if (kstrtoint(buf, 0, &val) != 0)
2682 return -EINVAL;
2683
2684 if ((val <= AVAILABLE || val > COPY_ERROR)) {
2685 dev_err(&instance->pdev->dev, "application updates invalid "
2686 "firmware crash state\n");
2687 return -EINVAL;
2688 }
2689
2690 instance->fw_crash_state = val;
2691
2692 if ((val == COPIED) || (val == COPY_ERROR)) {
2693 spin_lock_irqsave(&instance->crashdump_lock, flags);
2694 megasas_free_host_crash_buffer(instance);
2695 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2696 if (val == COPY_ERROR)
2697 dev_info(&instance->pdev->dev, "application failed to "
2698 "copy Firmware crash dump\n");
2699 else
2700 dev_info(&instance->pdev->dev, "Firmware crash dump "
2701 "copied successfully\n");
2702 }
2703 return strlen(buf);
2704 }
2705
2706 static ssize_t
2707 megasas_fw_crash_state_show(struct device *cdev,
2708 struct device_attribute *attr, char *buf)
2709 {
2710 struct Scsi_Host *shost = class_to_shost(cdev);
2711 struct megasas_instance *instance =
2712 (struct megasas_instance *) shost->hostdata;
2713 return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state);
2714 }
2715
2716 static ssize_t
2717 megasas_page_size_show(struct device *cdev,
2718 struct device_attribute *attr, char *buf)
2719 {
2720 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1);
2721 }
2722
2723 static DEVICE_ATTR(fw_crash_buffer, S_IRUGO | S_IWUSR,
2724 megasas_fw_crash_buffer_show, megasas_fw_crash_buffer_store);
2725 static DEVICE_ATTR(fw_crash_buffer_size, S_IRUGO,
2726 megasas_fw_crash_buffer_size_show, NULL);
2727 static DEVICE_ATTR(fw_crash_state, S_IRUGO | S_IWUSR,
2728 megasas_fw_crash_state_show, megasas_fw_crash_state_store);
2729 static DEVICE_ATTR(page_size, S_IRUGO,
2730 megasas_page_size_show, NULL);
2731
2732 struct device_attribute *megaraid_host_attrs[] = {
2733 &dev_attr_fw_crash_buffer_size,
2734 &dev_attr_fw_crash_buffer,
2735 &dev_attr_fw_crash_state,
2736 &dev_attr_page_size,
2737 NULL,
2738 };
2739
2740 /*
2741 * Scsi host template for megaraid_sas driver
2742 */
2743 static struct scsi_host_template megasas_template = {
2744
2745 .module = THIS_MODULE,
2746 .name = "LSI SAS based MegaRAID driver",
2747 .proc_name = "megaraid_sas",
2748 .slave_configure = megasas_slave_configure,
2749 .slave_alloc = megasas_slave_alloc,
2750 .queuecommand = megasas_queue_command,
2751 .eh_device_reset_handler = megasas_reset_device,
2752 .eh_bus_reset_handler = megasas_reset_bus_host,
2753 .eh_host_reset_handler = megasas_reset_bus_host,
2754 .eh_timed_out = megasas_reset_timer,
2755 .shost_attrs = megaraid_host_attrs,
2756 .bios_param = megasas_bios_param,
2757 .use_clustering = ENABLE_CLUSTERING,
2758 .change_queue_depth = scsi_change_queue_depth,
2759 .no_write_same = 1,
2760 };
2761
2762 /**
2763 * megasas_complete_int_cmd - Completes an internal command
2764 * @instance: Adapter soft state
2765 * @cmd: Command to be completed
2766 *
2767 * The megasas_issue_blocked_cmd() function waits for a command to complete
2768 * after it issues a command. This function wakes up that waiting routine by
2769 * calling wake_up() on the wait queue.
2770 */
2771 static void
2772 megasas_complete_int_cmd(struct megasas_instance *instance,
2773 struct megasas_cmd *cmd)
2774 {
2775 cmd->cmd_status = cmd->frame->io.cmd_status;
2776
2777 if (cmd->cmd_status == ENODATA) {
2778 cmd->cmd_status = 0;
2779 }
2780 wake_up(&instance->int_cmd_wait_q);
2781 }
2782
2783 /**
2784 * megasas_complete_abort - Completes aborting a command
2785 * @instance: Adapter soft state
2786 * @cmd: Cmd that was issued to abort another cmd
2787 *
2788 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
2789 * after it issues an abort on a previously issued command. This function
2790 * wakes up all functions waiting on the same wait queue.
2791 */
2792 static void
2793 megasas_complete_abort(struct megasas_instance *instance,
2794 struct megasas_cmd *cmd)
2795 {
2796 if (cmd->sync_cmd) {
2797 cmd->sync_cmd = 0;
2798 cmd->cmd_status = 0;
2799 wake_up(&instance->abort_cmd_wait_q);
2800 }
2801
2802 return;
2803 }
2804
2805 /**
2806 * megasas_complete_cmd - Completes a command
2807 * @instance: Adapter soft state
2808 * @cmd: Command to be completed
2809 * @alt_status: If non-zero, use this value as status to
2810 * SCSI mid-layer instead of the value returned
2811 * by the FW. This should be used if caller wants
2812 * an alternate status (as in the case of aborted
2813 * commands)
2814 */
2815 void
2816 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
2817 u8 alt_status)
2818 {
2819 int exception = 0;
2820 struct megasas_header *hdr = &cmd->frame->hdr;
2821 unsigned long flags;
2822 struct fusion_context *fusion = instance->ctrl_context;
2823 u32 opcode;
2824
2825 /* flag for the retry reset */
2826 cmd->retry_for_fw_reset = 0;
2827
2828 if (cmd->scmd)
2829 cmd->scmd->SCp.ptr = NULL;
2830
2831 switch (hdr->cmd) {
2832 case MFI_CMD_INVALID:
2833 /* Some older 1068 controller FW may keep a pended
2834 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
2835 when booting the kdump kernel. Ignore this command to
2836 prevent a kernel panic on shutdown of the kdump kernel. */
2837 printk(KERN_WARNING "megaraid_sas: MFI_CMD_INVALID command "
2838 "completed.\n");
2839 printk(KERN_WARNING "megaraid_sas: If you have a controller "
2840 "other than PERC5, please upgrade your firmware.\n");
2841 break;
2842 case MFI_CMD_PD_SCSI_IO:
2843 case MFI_CMD_LD_SCSI_IO:
2844
2845 /*
2846 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
2847 * issued either through an IO path or an IOCTL path. If it
2848 * was via IOCTL, we will send it to internal completion.
2849 */
2850 if (cmd->sync_cmd) {
2851 cmd->sync_cmd = 0;
2852 megasas_complete_int_cmd(instance, cmd);
2853 break;
2854 }
2855
2856 case MFI_CMD_LD_READ:
2857 case MFI_CMD_LD_WRITE:
2858
2859 if (alt_status) {
2860 cmd->scmd->result = alt_status << 16;
2861 exception = 1;
2862 }
2863
2864 if (exception) {
2865
2866 atomic_dec(&instance->fw_outstanding);
2867
2868 scsi_dma_unmap(cmd->scmd);
2869 cmd->scmd->scsi_done(cmd->scmd);
2870 megasas_return_cmd(instance, cmd);
2871
2872 break;
2873 }
2874
2875 switch (hdr->cmd_status) {
2876
2877 case MFI_STAT_OK:
2878 cmd->scmd->result = DID_OK << 16;
2879 break;
2880
2881 case MFI_STAT_SCSI_IO_FAILED:
2882 case MFI_STAT_LD_INIT_IN_PROGRESS:
2883 cmd->scmd->result =
2884 (DID_ERROR << 16) | hdr->scsi_status;
2885 break;
2886
2887 case MFI_STAT_SCSI_DONE_WITH_ERROR:
2888
2889 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
2890
2891 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
2892 memset(cmd->scmd->sense_buffer, 0,
2893 SCSI_SENSE_BUFFERSIZE);
2894 memcpy(cmd->scmd->sense_buffer, cmd->sense,
2895 hdr->sense_len);
2896
2897 cmd->scmd->result |= DRIVER_SENSE << 24;
2898 }
2899
2900 break;
2901
2902 case MFI_STAT_LD_OFFLINE:
2903 case MFI_STAT_DEVICE_NOT_FOUND:
2904 cmd->scmd->result = DID_BAD_TARGET << 16;
2905 break;
2906
2907 default:
2908 printk(KERN_DEBUG "megasas: MFI FW status %#x\n",
2909 hdr->cmd_status);
2910 cmd->scmd->result = DID_ERROR << 16;
2911 break;
2912 }
2913
2914 atomic_dec(&instance->fw_outstanding);
2915
2916 scsi_dma_unmap(cmd->scmd);
2917 cmd->scmd->scsi_done(cmd->scmd);
2918 megasas_return_cmd(instance, cmd);
2919
2920 break;
2921
2922 case MFI_CMD_SMP:
2923 case MFI_CMD_STP:
2924 case MFI_CMD_DCMD:
2925 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
2926 /* Check for LD map update */
2927 if ((opcode == MR_DCMD_LD_MAP_GET_INFO)
2928 && (cmd->frame->dcmd.mbox.b[1] == 1)) {
2929 fusion->fast_path_io = 0;
2930 spin_lock_irqsave(instance->host->host_lock, flags);
2931 if (cmd->frame->hdr.cmd_status != 0) {
2932 if (cmd->frame->hdr.cmd_status !=
2933 MFI_STAT_NOT_FOUND)
2934 printk(KERN_WARNING "megasas: map sync"
2935 "failed, status = 0x%x.\n",
2936 cmd->frame->hdr.cmd_status);
2937 else {
2938 megasas_return_mfi_mpt_pthr(instance,
2939 cmd, cmd->mpt_pthr_cmd_blocked);
2940 spin_unlock_irqrestore(
2941 instance->host->host_lock,
2942 flags);
2943 break;
2944 }
2945 } else
2946 instance->map_id++;
2947 megasas_return_mfi_mpt_pthr(instance, cmd,
2948 cmd->mpt_pthr_cmd_blocked);
2949
2950 /*
2951 * Set fast path IO to ZERO.
2952 * Validate Map will set proper value.
2953 * Meanwhile all IOs will go as LD IO.
2954 */
2955 if (MR_ValidateMapInfo(instance))
2956 fusion->fast_path_io = 1;
2957 else
2958 fusion->fast_path_io = 0;
2959 megasas_sync_map_info(instance);
2960 spin_unlock_irqrestore(instance->host->host_lock,
2961 flags);
2962 break;
2963 }
2964 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
2965 opcode == MR_DCMD_CTRL_EVENT_GET) {
2966 spin_lock_irqsave(&poll_aen_lock, flags);
2967 megasas_poll_wait_aen = 0;
2968 spin_unlock_irqrestore(&poll_aen_lock, flags);
2969 }
2970
2971 /*
2972 * See if got an event notification
2973 */
2974 if (opcode == MR_DCMD_CTRL_EVENT_WAIT)
2975 megasas_service_aen(instance, cmd);
2976 else
2977 megasas_complete_int_cmd(instance, cmd);
2978
2979 break;
2980
2981 case MFI_CMD_ABORT:
2982 /*
2983 * Cmd issued to abort another cmd returned
2984 */
2985 megasas_complete_abort(instance, cmd);
2986 break;
2987
2988 default:
2989 printk("megasas: Unknown command completed! [0x%X]\n",
2990 hdr->cmd);
2991 break;
2992 }
2993 }
2994
2995 /**
2996 * megasas_issue_pending_cmds_again - issue all pending cmds
2997 * in FW again because of the fw reset
2998 * @instance: Adapter soft state
2999 */
3000 static inline void
3001 megasas_issue_pending_cmds_again(struct megasas_instance *instance)
3002 {
3003 struct megasas_cmd *cmd;
3004 struct list_head clist_local;
3005 union megasas_evt_class_locale class_locale;
3006 unsigned long flags;
3007 u32 seq_num;
3008
3009 INIT_LIST_HEAD(&clist_local);
3010 spin_lock_irqsave(&instance->hba_lock, flags);
3011 list_splice_init(&instance->internal_reset_pending_q, &clist_local);
3012 spin_unlock_irqrestore(&instance->hba_lock, flags);
3013
3014 while (!list_empty(&clist_local)) {
3015 cmd = list_entry((&clist_local)->next,
3016 struct megasas_cmd, list);
3017 list_del_init(&cmd->list);
3018
3019 if (cmd->sync_cmd || cmd->scmd) {
3020 printk(KERN_NOTICE "megaraid_sas: command %p, %p:%d"
3021 "detected to be pending while HBA reset.\n",
3022 cmd, cmd->scmd, cmd->sync_cmd);
3023
3024 cmd->retry_for_fw_reset++;
3025
3026 if (cmd->retry_for_fw_reset == 3) {
3027 printk(KERN_NOTICE "megaraid_sas: cmd %p, %p:%d"
3028 "was tried multiple times during reset."
3029 "Shutting down the HBA\n",
3030 cmd, cmd->scmd, cmd->sync_cmd);
3031 megaraid_sas_kill_hba(instance);
3032
3033 instance->adprecovery =
3034 MEGASAS_HW_CRITICAL_ERROR;
3035 return;
3036 }
3037 }
3038
3039 if (cmd->sync_cmd == 1) {
3040 if (cmd->scmd) {
3041 printk(KERN_NOTICE "megaraid_sas: unexpected"
3042 "cmd attached to internal command!\n");
3043 }
3044 printk(KERN_NOTICE "megasas: %p synchronous cmd"
3045 "on the internal reset queue,"
3046 "issue it again.\n", cmd);
3047 cmd->cmd_status = ENODATA;
3048 instance->instancet->fire_cmd(instance,
3049 cmd->frame_phys_addr ,
3050 0, instance->reg_set);
3051 } else if (cmd->scmd) {
3052 printk(KERN_NOTICE "megasas: %p scsi cmd [%02x]"
3053 "detected on the internal queue, issue again.\n",
3054 cmd, cmd->scmd->cmnd[0]);
3055
3056 atomic_inc(&instance->fw_outstanding);
3057 instance->instancet->fire_cmd(instance,
3058 cmd->frame_phys_addr,
3059 cmd->frame_count-1, instance->reg_set);
3060 } else {
3061 printk(KERN_NOTICE "megasas: %p unexpected cmd on the"
3062 "internal reset defer list while re-issue!!\n",
3063 cmd);
3064 }
3065 }
3066
3067 if (instance->aen_cmd) {
3068 printk(KERN_NOTICE "megaraid_sas: aen_cmd in def process\n");
3069 megasas_return_cmd(instance, instance->aen_cmd);
3070
3071 instance->aen_cmd = NULL;
3072 }
3073
3074 /*
3075 * Initiate AEN (Asynchronous Event Notification)
3076 */
3077 seq_num = instance->last_seq_num;
3078 class_locale.members.reserved = 0;
3079 class_locale.members.locale = MR_EVT_LOCALE_ALL;
3080 class_locale.members.class = MR_EVT_CLASS_DEBUG;
3081
3082 megasas_register_aen(instance, seq_num, class_locale.word);
3083 }
3084
3085 /**
3086 * Move the internal reset pending commands to a deferred queue.
3087 *
3088 * We move the commands pending at internal reset time to a
3089 * pending queue. This queue would be flushed after successful
3090 * completion of the internal reset sequence. if the internal reset
3091 * did not complete in time, the kernel reset handler would flush
3092 * these commands.
3093 **/
3094 static void
3095 megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
3096 {
3097 struct megasas_cmd *cmd;
3098 int i;
3099 u32 max_cmd = instance->max_fw_cmds;
3100 u32 defer_index;
3101 unsigned long flags;
3102
3103 defer_index = 0;
3104 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
3105 for (i = 0; i < max_cmd; i++) {
3106 cmd = instance->cmd_list[i];
3107 if (cmd->sync_cmd == 1 || cmd->scmd) {
3108 printk(KERN_NOTICE "megasas: moving cmd[%d]:%p:%d:%p"
3109 "on the defer queue as internal\n",
3110 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
3111
3112 if (!list_empty(&cmd->list)) {
3113 printk(KERN_NOTICE "megaraid_sas: ERROR while"
3114 " moving this cmd:%p, %d %p, it was"
3115 "discovered on some list?\n",
3116 cmd, cmd->sync_cmd, cmd->scmd);
3117
3118 list_del_init(&cmd->list);
3119 }
3120 defer_index++;
3121 list_add_tail(&cmd->list,
3122 &instance->internal_reset_pending_q);
3123 }
3124 }
3125 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
3126 }
3127
3128
3129 static void
3130 process_fw_state_change_wq(struct work_struct *work)
3131 {
3132 struct megasas_instance *instance =
3133 container_of(work, struct megasas_instance, work_init);
3134 u32 wait;
3135 unsigned long flags;
3136
3137 if (instance->adprecovery != MEGASAS_ADPRESET_SM_INFAULT) {
3138 printk(KERN_NOTICE "megaraid_sas: error, recovery st %x \n",
3139 instance->adprecovery);
3140 return ;
3141 }
3142
3143 if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) {
3144 printk(KERN_NOTICE "megaraid_sas: FW detected to be in fault"
3145 "state, restarting it...\n");
3146
3147 instance->instancet->disable_intr(instance);
3148 atomic_set(&instance->fw_outstanding, 0);
3149
3150 atomic_set(&instance->fw_reset_no_pci_access, 1);
3151 instance->instancet->adp_reset(instance, instance->reg_set);
3152 atomic_set(&instance->fw_reset_no_pci_access, 0 );
3153
3154 printk(KERN_NOTICE "megaraid_sas: FW restarted successfully,"
3155 "initiating next stage...\n");
3156
3157 printk(KERN_NOTICE "megaraid_sas: HBA recovery state machine,"
3158 "state 2 starting...\n");
3159
3160 /*waitting for about 20 second before start the second init*/
3161 for (wait = 0; wait < 30; wait++) {
3162 msleep(1000);
3163 }
3164
3165 if (megasas_transition_to_ready(instance, 1)) {
3166 printk(KERN_NOTICE "megaraid_sas:adapter not ready\n");
3167
3168 megaraid_sas_kill_hba(instance);
3169 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
3170 return ;
3171 }
3172
3173 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
3174 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
3175 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
3176 ) {
3177 *instance->consumer = *instance->producer;
3178 } else {
3179 *instance->consumer = 0;
3180 *instance->producer = 0;
3181 }
3182
3183 megasas_issue_init_mfi(instance);
3184
3185 spin_lock_irqsave(&instance->hba_lock, flags);
3186 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
3187 spin_unlock_irqrestore(&instance->hba_lock, flags);
3188 instance->instancet->enable_intr(instance);
3189
3190 megasas_issue_pending_cmds_again(instance);
3191 instance->issuepend_done = 1;
3192 }
3193 return ;
3194 }
3195
3196 /**
3197 * megasas_deplete_reply_queue - Processes all completed commands
3198 * @instance: Adapter soft state
3199 * @alt_status: Alternate status to be returned to
3200 * SCSI mid-layer instead of the status
3201 * returned by the FW
3202 * Note: this must be called with hba lock held
3203 */
3204 static int
3205 megasas_deplete_reply_queue(struct megasas_instance *instance,
3206 u8 alt_status)
3207 {
3208 u32 mfiStatus;
3209 u32 fw_state;
3210
3211 if ((mfiStatus = instance->instancet->check_reset(instance,
3212 instance->reg_set)) == 1) {
3213 return IRQ_HANDLED;
3214 }
3215
3216 if ((mfiStatus = instance->instancet->clear_intr(
3217 instance->reg_set)
3218 ) == 0) {
3219 /* Hardware may not set outbound_intr_status in MSI-X mode */
3220 if (!instance->msix_vectors)
3221 return IRQ_NONE;
3222 }
3223
3224 instance->mfiStatus = mfiStatus;
3225
3226 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
3227 fw_state = instance->instancet->read_fw_status_reg(
3228 instance->reg_set) & MFI_STATE_MASK;
3229
3230 if (fw_state != MFI_STATE_FAULT) {
3231 printk(KERN_NOTICE "megaraid_sas: fw state:%x\n",
3232 fw_state);
3233 }
3234
3235 if ((fw_state == MFI_STATE_FAULT) &&
3236 (instance->disableOnlineCtrlReset == 0)) {
3237 printk(KERN_NOTICE "megaraid_sas: wait adp restart\n");
3238
3239 if ((instance->pdev->device ==
3240 PCI_DEVICE_ID_LSI_SAS1064R) ||
3241 (instance->pdev->device ==
3242 PCI_DEVICE_ID_DELL_PERC5) ||
3243 (instance->pdev->device ==
3244 PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
3245
3246 *instance->consumer =
3247 cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
3248 }
3249
3250
3251 instance->instancet->disable_intr(instance);
3252 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
3253 instance->issuepend_done = 0;
3254
3255 atomic_set(&instance->fw_outstanding, 0);
3256 megasas_internal_reset_defer_cmds(instance);
3257
3258 printk(KERN_NOTICE "megasas: fwState=%x, stage:%d\n",
3259 fw_state, instance->adprecovery);
3260
3261 schedule_work(&instance->work_init);
3262 return IRQ_HANDLED;
3263
3264 } else {
3265 printk(KERN_NOTICE "megasas: fwstate:%x, dis_OCR=%x\n",
3266 fw_state, instance->disableOnlineCtrlReset);
3267 }
3268 }
3269
3270 tasklet_schedule(&instance->isr_tasklet);
3271 return IRQ_HANDLED;
3272 }
3273 /**
3274 * megasas_isr - isr entry point
3275 */
3276 static irqreturn_t megasas_isr(int irq, void *devp)
3277 {
3278 struct megasas_irq_context *irq_context = devp;
3279 struct megasas_instance *instance = irq_context->instance;
3280 unsigned long flags;
3281 irqreturn_t rc;
3282
3283 if (atomic_read(&instance->fw_reset_no_pci_access))
3284 return IRQ_HANDLED;
3285
3286 spin_lock_irqsave(&instance->hba_lock, flags);
3287 rc = megasas_deplete_reply_queue(instance, DID_OK);
3288 spin_unlock_irqrestore(&instance->hba_lock, flags);
3289
3290 return rc;
3291 }
3292
3293 /**
3294 * megasas_transition_to_ready - Move the FW to READY state
3295 * @instance: Adapter soft state
3296 *
3297 * During the initialization, FW passes can potentially be in any one of
3298 * several possible states. If the FW in operational, waiting-for-handshake
3299 * states, driver must take steps to bring it to ready state. Otherwise, it
3300 * has to wait for the ready state.
3301 */
3302 int
3303 megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
3304 {
3305 int i;
3306 u8 max_wait;
3307 u32 fw_state;
3308 u32 cur_state;
3309 u32 abs_state, curr_abs_state;
3310
3311 abs_state = instance->instancet->read_fw_status_reg(instance->reg_set);
3312 fw_state = abs_state & MFI_STATE_MASK;
3313
3314 if (fw_state != MFI_STATE_READY)
3315 printk(KERN_INFO "megasas: Waiting for FW to come to ready"
3316 " state\n");
3317
3318 while (fw_state != MFI_STATE_READY) {
3319
3320 switch (fw_state) {
3321
3322 case MFI_STATE_FAULT:
3323 printk(KERN_DEBUG "megasas: FW in FAULT state!!\n");
3324 if (ocr) {
3325 max_wait = MEGASAS_RESET_WAIT_TIME;
3326 cur_state = MFI_STATE_FAULT;
3327 break;
3328 } else
3329 return -ENODEV;
3330
3331 case MFI_STATE_WAIT_HANDSHAKE:
3332 /*
3333 * Set the CLR bit in inbound doorbell
3334 */
3335 if ((instance->pdev->device ==
3336 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3337 (instance->pdev->device ==
3338 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3339 (instance->pdev->device ==
3340 PCI_DEVICE_ID_LSI_FUSION) ||
3341 (instance->pdev->device ==
3342 PCI_DEVICE_ID_LSI_PLASMA) ||
3343 (instance->pdev->device ==
3344 PCI_DEVICE_ID_LSI_INVADER) ||
3345 (instance->pdev->device ==
3346 PCI_DEVICE_ID_LSI_FURY)) {
3347 writel(
3348 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
3349 &instance->reg_set->doorbell);
3350 } else {
3351 writel(
3352 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
3353 &instance->reg_set->inbound_doorbell);
3354 }
3355
3356 max_wait = MEGASAS_RESET_WAIT_TIME;
3357 cur_state = MFI_STATE_WAIT_HANDSHAKE;
3358 break;
3359
3360 case MFI_STATE_BOOT_MESSAGE_PENDING:
3361 if ((instance->pdev->device ==
3362 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3363 (instance->pdev->device ==
3364 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3365 (instance->pdev->device ==
3366 PCI_DEVICE_ID_LSI_FUSION) ||
3367 (instance->pdev->device ==
3368 PCI_DEVICE_ID_LSI_PLASMA) ||
3369 (instance->pdev->device ==
3370 PCI_DEVICE_ID_LSI_INVADER) ||
3371 (instance->pdev->device ==
3372 PCI_DEVICE_ID_LSI_FURY)) {
3373 writel(MFI_INIT_HOTPLUG,
3374 &instance->reg_set->doorbell);
3375 } else
3376 writel(MFI_INIT_HOTPLUG,
3377 &instance->reg_set->inbound_doorbell);
3378
3379 max_wait = MEGASAS_RESET_WAIT_TIME;
3380 cur_state = MFI_STATE_BOOT_MESSAGE_PENDING;
3381 break;
3382
3383 case MFI_STATE_OPERATIONAL:
3384 /*
3385 * Bring it to READY state; assuming max wait 10 secs
3386 */
3387 instance->instancet->disable_intr(instance);
3388 if ((instance->pdev->device ==
3389 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3390 (instance->pdev->device ==
3391 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3392 (instance->pdev->device
3393 == PCI_DEVICE_ID_LSI_FUSION) ||
3394 (instance->pdev->device
3395 == PCI_DEVICE_ID_LSI_PLASMA) ||
3396 (instance->pdev->device
3397 == PCI_DEVICE_ID_LSI_INVADER) ||
3398 (instance->pdev->device
3399 == PCI_DEVICE_ID_LSI_FURY)) {
3400 writel(MFI_RESET_FLAGS,
3401 &instance->reg_set->doorbell);
3402 if ((instance->pdev->device ==
3403 PCI_DEVICE_ID_LSI_FUSION) ||
3404 (instance->pdev->device ==
3405 PCI_DEVICE_ID_LSI_PLASMA) ||
3406 (instance->pdev->device ==
3407 PCI_DEVICE_ID_LSI_INVADER) ||
3408 (instance->pdev->device ==
3409 PCI_DEVICE_ID_LSI_FURY)) {
3410 for (i = 0; i < (10 * 1000); i += 20) {
3411 if (readl(
3412 &instance->
3413 reg_set->
3414 doorbell) & 1)
3415 msleep(20);
3416 else
3417 break;
3418 }
3419 }
3420 } else
3421 writel(MFI_RESET_FLAGS,
3422 &instance->reg_set->inbound_doorbell);
3423
3424 max_wait = MEGASAS_RESET_WAIT_TIME;
3425 cur_state = MFI_STATE_OPERATIONAL;
3426 break;
3427
3428 case MFI_STATE_UNDEFINED:
3429 /*
3430 * This state should not last for more than 2 seconds
3431 */
3432 max_wait = MEGASAS_RESET_WAIT_TIME;
3433 cur_state = MFI_STATE_UNDEFINED;
3434 break;
3435
3436 case MFI_STATE_BB_INIT:
3437 max_wait = MEGASAS_RESET_WAIT_TIME;
3438 cur_state = MFI_STATE_BB_INIT;
3439 break;
3440
3441 case MFI_STATE_FW_INIT:
3442 max_wait = MEGASAS_RESET_WAIT_TIME;
3443 cur_state = MFI_STATE_FW_INIT;
3444 break;
3445
3446 case MFI_STATE_FW_INIT_2:
3447 max_wait = MEGASAS_RESET_WAIT_TIME;
3448 cur_state = MFI_STATE_FW_INIT_2;
3449 break;
3450
3451 case MFI_STATE_DEVICE_SCAN:
3452 max_wait = MEGASAS_RESET_WAIT_TIME;
3453 cur_state = MFI_STATE_DEVICE_SCAN;
3454 break;
3455
3456 case MFI_STATE_FLUSH_CACHE:
3457 max_wait = MEGASAS_RESET_WAIT_TIME;
3458 cur_state = MFI_STATE_FLUSH_CACHE;
3459 break;
3460
3461 default:
3462 printk(KERN_DEBUG "megasas: Unknown state 0x%x\n",
3463 fw_state);
3464 return -ENODEV;
3465 }
3466
3467 /*
3468 * The cur_state should not last for more than max_wait secs
3469 */
3470 for (i = 0; i < (max_wait * 1000); i++) {
3471 curr_abs_state = instance->instancet->
3472 read_fw_status_reg(instance->reg_set);
3473
3474 if (abs_state == curr_abs_state) {
3475 msleep(1);
3476 } else
3477 break;
3478 }
3479
3480 /*
3481 * Return error if fw_state hasn't changed after max_wait
3482 */
3483 if (curr_abs_state == abs_state) {
3484 printk(KERN_DEBUG "FW state [%d] hasn't changed "
3485 "in %d secs\n", fw_state, max_wait);
3486 return -ENODEV;
3487 }
3488
3489 abs_state = curr_abs_state;
3490 fw_state = curr_abs_state & MFI_STATE_MASK;
3491 }
3492 printk(KERN_INFO "megasas: FW now in Ready state\n");
3493
3494 return 0;
3495 }
3496
3497 /**
3498 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool
3499 * @instance: Adapter soft state
3500 */
3501 static void megasas_teardown_frame_pool(struct megasas_instance *instance)
3502 {
3503 int i;
3504 u32 max_cmd = instance->max_mfi_cmds;
3505 struct megasas_cmd *cmd;
3506
3507 if (!instance->frame_dma_pool)
3508 return;
3509
3510 /*
3511 * Return all frames to pool
3512 */
3513 for (i = 0; i < max_cmd; i++) {
3514
3515 cmd = instance->cmd_list[i];
3516
3517 if (cmd->frame)
3518 pci_pool_free(instance->frame_dma_pool, cmd->frame,
3519 cmd->frame_phys_addr);
3520
3521 if (cmd->sense)
3522 pci_pool_free(instance->sense_dma_pool, cmd->sense,
3523 cmd->sense_phys_addr);
3524 }
3525
3526 /*
3527 * Now destroy the pool itself
3528 */
3529 pci_pool_destroy(instance->frame_dma_pool);
3530 pci_pool_destroy(instance->sense_dma_pool);
3531
3532 instance->frame_dma_pool = NULL;
3533 instance->sense_dma_pool = NULL;
3534 }
3535
3536 /**
3537 * megasas_create_frame_pool - Creates DMA pool for cmd frames
3538 * @instance: Adapter soft state
3539 *
3540 * Each command packet has an embedded DMA memory buffer that is used for
3541 * filling MFI frame and the SG list that immediately follows the frame. This
3542 * function creates those DMA memory buffers for each command packet by using
3543 * PCI pool facility.
3544 */
3545 static int megasas_create_frame_pool(struct megasas_instance *instance)
3546 {
3547 int i;
3548 u32 max_cmd;
3549 u32 sge_sz;
3550 u32 sgl_sz;
3551 u32 total_sz;
3552 u32 frame_count;
3553 struct megasas_cmd *cmd;
3554
3555 max_cmd = instance->max_mfi_cmds;
3556
3557 /*
3558 * Size of our frame is 64 bytes for MFI frame, followed by max SG
3559 * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer
3560 */
3561 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
3562 sizeof(struct megasas_sge32);
3563
3564 if (instance->flag_ieee) {
3565 sge_sz = sizeof(struct megasas_sge_skinny);
3566 }
3567
3568 /*
3569 * Calculated the number of 64byte frames required for SGL
3570 */
3571 sgl_sz = sge_sz * instance->max_num_sge;
3572 frame_count = (sgl_sz + MEGAMFI_FRAME_SIZE - 1) / MEGAMFI_FRAME_SIZE;
3573 frame_count = 15;
3574
3575 /*
3576 * We need one extra frame for the MFI command
3577 */
3578 frame_count++;
3579
3580 total_sz = MEGAMFI_FRAME_SIZE * frame_count;
3581 /*
3582 * Use DMA pool facility provided by PCI layer
3583 */
3584 instance->frame_dma_pool = pci_pool_create("megasas frame pool",
3585 instance->pdev, total_sz, 64,
3586 0);
3587
3588 if (!instance->frame_dma_pool) {
3589 printk(KERN_DEBUG "megasas: failed to setup frame pool\n");
3590 return -ENOMEM;
3591 }
3592
3593 instance->sense_dma_pool = pci_pool_create("megasas sense pool",
3594 instance->pdev, 128, 4, 0);
3595
3596 if (!instance->sense_dma_pool) {
3597 printk(KERN_DEBUG "megasas: failed to setup sense pool\n");
3598
3599 pci_pool_destroy(instance->frame_dma_pool);
3600 instance->frame_dma_pool = NULL;
3601
3602 return -ENOMEM;
3603 }
3604
3605 /*
3606 * Allocate and attach a frame to each of the commands in cmd_list.
3607 * By making cmd->index as the context instead of the &cmd, we can
3608 * always use 32bit context regardless of the architecture
3609 */
3610 for (i = 0; i < max_cmd; i++) {
3611
3612 cmd = instance->cmd_list[i];
3613
3614 cmd->frame = pci_pool_alloc(instance->frame_dma_pool,
3615 GFP_KERNEL, &cmd->frame_phys_addr);
3616
3617 cmd->sense = pci_pool_alloc(instance->sense_dma_pool,
3618 GFP_KERNEL, &cmd->sense_phys_addr);
3619
3620 /*
3621 * megasas_teardown_frame_pool() takes care of freeing
3622 * whatever has been allocated
3623 */
3624 if (!cmd->frame || !cmd->sense) {
3625 printk(KERN_DEBUG "megasas: pci_pool_alloc failed \n");
3626 megasas_teardown_frame_pool(instance);
3627 return -ENOMEM;
3628 }
3629
3630 memset(cmd->frame, 0, total_sz);
3631 cmd->frame->io.context = cpu_to_le32(cmd->index);
3632 cmd->frame->io.pad_0 = 0;
3633 if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) &&
3634 (instance->pdev->device != PCI_DEVICE_ID_LSI_PLASMA) &&
3635 (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) &&
3636 (instance->pdev->device != PCI_DEVICE_ID_LSI_FURY) &&
3637 (reset_devices))
3638 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
3639 }
3640
3641 return 0;
3642 }
3643
3644 /**
3645 * megasas_free_cmds - Free all the cmds in the free cmd pool
3646 * @instance: Adapter soft state
3647 */
3648 void megasas_free_cmds(struct megasas_instance *instance)
3649 {
3650 int i;
3651 /* First free the MFI frame pool */
3652 megasas_teardown_frame_pool(instance);
3653
3654 /* Free all the commands in the cmd_list */
3655 for (i = 0; i < instance->max_mfi_cmds; i++)
3656
3657 kfree(instance->cmd_list[i]);
3658
3659 /* Free the cmd_list buffer itself */
3660 kfree(instance->cmd_list);
3661 instance->cmd_list = NULL;
3662
3663 INIT_LIST_HEAD(&instance->cmd_pool);
3664 }
3665
3666 /**
3667 * megasas_alloc_cmds - Allocates the command packets
3668 * @instance: Adapter soft state
3669 *
3670 * Each command that is issued to the FW, whether IO commands from the OS or
3671 * internal commands like IOCTLs, are wrapped in local data structure called
3672 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
3673 * the FW.
3674 *
3675 * Each frame has a 32-bit field called context (tag). This context is used
3676 * to get back the megasas_cmd from the frame when a frame gets completed in
3677 * the ISR. Typically the address of the megasas_cmd itself would be used as
3678 * the context. But we wanted to keep the differences between 32 and 64 bit
3679 * systems to the mininum. We always use 32 bit integers for the context. In
3680 * this driver, the 32 bit values are the indices into an array cmd_list.
3681 * This array is used only to look up the megasas_cmd given the context. The
3682 * free commands themselves are maintained in a linked list called cmd_pool.
3683 */
3684 int megasas_alloc_cmds(struct megasas_instance *instance)
3685 {
3686 int i;
3687 int j;
3688 u32 max_cmd;
3689 struct megasas_cmd *cmd;
3690 struct fusion_context *fusion;
3691
3692 fusion = instance->ctrl_context;
3693 max_cmd = instance->max_mfi_cmds;
3694
3695 /*
3696 * instance->cmd_list is an array of struct megasas_cmd pointers.
3697 * Allocate the dynamic array first and then allocate individual
3698 * commands.
3699 */
3700 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
3701
3702 if (!instance->cmd_list) {
3703 printk(KERN_DEBUG "megasas: out of memory\n");
3704 return -ENOMEM;
3705 }
3706
3707 memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd);
3708
3709 for (i = 0; i < max_cmd; i++) {
3710 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
3711 GFP_KERNEL);
3712
3713 if (!instance->cmd_list[i]) {
3714
3715 for (j = 0; j < i; j++)
3716 kfree(instance->cmd_list[j]);
3717
3718 kfree(instance->cmd_list);
3719 instance->cmd_list = NULL;
3720
3721 return -ENOMEM;
3722 }
3723 }
3724
3725 for (i = 0; i < max_cmd; i++) {
3726 cmd = instance->cmd_list[i];
3727 memset(cmd, 0, sizeof(struct megasas_cmd));
3728 cmd->index = i;
3729 atomic_set(&cmd->mfi_mpt_pthr, MFI_LIST_ADDED);
3730 cmd->scmd = NULL;
3731 cmd->instance = instance;
3732
3733 list_add_tail(&cmd->list, &instance->cmd_pool);
3734 }
3735
3736 /*
3737 * Create a frame pool and assign one frame to each cmd
3738 */
3739 if (megasas_create_frame_pool(instance)) {
3740 printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n");
3741 megasas_free_cmds(instance);
3742 }
3743
3744 return 0;
3745 }
3746
3747 /*
3748 * megasas_get_pd_list_info - Returns FW's pd_list structure
3749 * @instance: Adapter soft state
3750 * @pd_list: pd_list structure
3751 *
3752 * Issues an internal command (DCMD) to get the FW's controller PD
3753 * list structure. This information is mainly used to find out SYSTEM
3754 * supported by the FW.
3755 */
3756 static int
3757 megasas_get_pd_list(struct megasas_instance *instance)
3758 {
3759 int ret = 0, pd_index = 0;
3760 struct megasas_cmd *cmd;
3761 struct megasas_dcmd_frame *dcmd;
3762 struct MR_PD_LIST *ci;
3763 struct MR_PD_ADDRESS *pd_addr;
3764 dma_addr_t ci_h = 0;
3765
3766 cmd = megasas_get_cmd(instance);
3767
3768 if (!cmd) {
3769 printk(KERN_DEBUG "megasas (get_pd_list): Failed to get cmd\n");
3770 return -ENOMEM;
3771 }
3772
3773 dcmd = &cmd->frame->dcmd;
3774
3775 ci = pci_alloc_consistent(instance->pdev,
3776 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h);
3777
3778 if (!ci) {
3779 printk(KERN_DEBUG "Failed to alloc mem for pd_list\n");
3780 megasas_return_cmd(instance, cmd);
3781 return -ENOMEM;
3782 }
3783
3784 memset(ci, 0, sizeof(*ci));
3785 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3786
3787 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
3788 dcmd->mbox.b[1] = 0;
3789 dcmd->cmd = MFI_CMD_DCMD;
3790 dcmd->cmd_status = 0xFF;
3791 dcmd->sge_count = 1;
3792 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
3793 dcmd->timeout = 0;
3794 dcmd->pad_0 = 0;
3795 dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
3796 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY);
3797 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
3798 dcmd->sgl.sge32[0].length = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
3799
3800 if (instance->ctrl_context && !instance->mask_interrupts)
3801 ret = megasas_issue_blocked_cmd(instance, cmd,
3802 MEGASAS_BLOCKED_CMD_TIMEOUT);
3803 else
3804 ret = megasas_issue_polled(instance, cmd);
3805
3806 /*
3807 * the following function will get the instance PD LIST.
3808 */
3809
3810 pd_addr = ci->addr;
3811
3812 if ( ret == 0 &&
3813 (le32_to_cpu(ci->count) <
3814 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) {
3815
3816 memset(instance->local_pd_list, 0,
3817 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
3818
3819 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) {
3820
3821 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid =
3822 le16_to_cpu(pd_addr->deviceId);
3823 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType =
3824 pd_addr->scsiDevType;
3825 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState =
3826 MR_PD_STATE_SYSTEM;
3827 pd_addr++;
3828 }
3829 memcpy(instance->pd_list, instance->local_pd_list,
3830 sizeof(instance->pd_list));
3831 }
3832
3833 pci_free_consistent(instance->pdev,
3834 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
3835 ci, ci_h);
3836
3837 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
3838 megasas_return_mfi_mpt_pthr(instance, cmd,
3839 cmd->mpt_pthr_cmd_blocked);
3840 else
3841 megasas_return_cmd(instance, cmd);
3842
3843 return ret;
3844 }
3845
3846 /*
3847 * megasas_get_ld_list_info - Returns FW's ld_list structure
3848 * @instance: Adapter soft state
3849 * @ld_list: ld_list structure
3850 *
3851 * Issues an internal command (DCMD) to get the FW's controller PD
3852 * list structure. This information is mainly used to find out SYSTEM
3853 * supported by the FW.
3854 */
3855 static int
3856 megasas_get_ld_list(struct megasas_instance *instance)
3857 {
3858 int ret = 0, ld_index = 0, ids = 0;
3859 struct megasas_cmd *cmd;
3860 struct megasas_dcmd_frame *dcmd;
3861 struct MR_LD_LIST *ci;
3862 dma_addr_t ci_h = 0;
3863 u32 ld_count;
3864
3865 cmd = megasas_get_cmd(instance);
3866
3867 if (!cmd) {
3868 printk(KERN_DEBUG "megasas_get_ld_list: Failed to get cmd\n");
3869 return -ENOMEM;
3870 }
3871
3872 dcmd = &cmd->frame->dcmd;
3873
3874 ci = pci_alloc_consistent(instance->pdev,
3875 sizeof(struct MR_LD_LIST),
3876 &ci_h);
3877
3878 if (!ci) {
3879 printk(KERN_DEBUG "Failed to alloc mem in get_ld_list\n");
3880 megasas_return_cmd(instance, cmd);
3881 return -ENOMEM;
3882 }
3883
3884 memset(ci, 0, sizeof(*ci));
3885 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3886
3887 if (instance->supportmax256vd)
3888 dcmd->mbox.b[0] = 1;
3889 dcmd->cmd = MFI_CMD_DCMD;
3890 dcmd->cmd_status = 0xFF;
3891 dcmd->sge_count = 1;
3892 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
3893 dcmd->timeout = 0;
3894 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST));
3895 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST);
3896 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
3897 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_LIST));
3898 dcmd->pad_0 = 0;
3899
3900 if (instance->ctrl_context && !instance->mask_interrupts)
3901 ret = megasas_issue_blocked_cmd(instance, cmd,
3902 MEGASAS_BLOCKED_CMD_TIMEOUT);
3903 else
3904 ret = megasas_issue_polled(instance, cmd);
3905
3906
3907 ld_count = le32_to_cpu(ci->ldCount);
3908
3909 /* the following function will get the instance PD LIST */
3910
3911 if ((ret == 0) && (ld_count <= instance->fw_supported_vd_count)) {
3912 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
3913
3914 for (ld_index = 0; ld_index < ld_count; ld_index++) {
3915 if (ci->ldList[ld_index].state != 0) {
3916 ids = ci->ldList[ld_index].ref.targetId;
3917 instance->ld_ids[ids] =
3918 ci->ldList[ld_index].ref.targetId;
3919 }
3920 }
3921 }
3922
3923 pci_free_consistent(instance->pdev,
3924 sizeof(struct MR_LD_LIST),
3925 ci,
3926 ci_h);
3927
3928 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
3929 megasas_return_mfi_mpt_pthr(instance, cmd,
3930 cmd->mpt_pthr_cmd_blocked);
3931 else
3932 megasas_return_cmd(instance, cmd);
3933 return ret;
3934 }
3935
3936 /**
3937 * megasas_ld_list_query - Returns FW's ld_list structure
3938 * @instance: Adapter soft state
3939 * @ld_list: ld_list structure
3940 *
3941 * Issues an internal command (DCMD) to get the FW's controller PD
3942 * list structure. This information is mainly used to find out SYSTEM
3943 * supported by the FW.
3944 */
3945 static int
3946 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
3947 {
3948 int ret = 0, ld_index = 0, ids = 0;
3949 struct megasas_cmd *cmd;
3950 struct megasas_dcmd_frame *dcmd;
3951 struct MR_LD_TARGETID_LIST *ci;
3952 dma_addr_t ci_h = 0;
3953 u32 tgtid_count;
3954
3955 cmd = megasas_get_cmd(instance);
3956
3957 if (!cmd) {
3958 printk(KERN_WARNING
3959 "megasas:(megasas_ld_list_query): Failed to get cmd\n");
3960 return -ENOMEM;
3961 }
3962
3963 dcmd = &cmd->frame->dcmd;
3964
3965 ci = pci_alloc_consistent(instance->pdev,
3966 sizeof(struct MR_LD_TARGETID_LIST), &ci_h);
3967
3968 if (!ci) {
3969 printk(KERN_WARNING
3970 "megasas: Failed to alloc mem for ld_list_query\n");
3971 megasas_return_cmd(instance, cmd);
3972 return -ENOMEM;
3973 }
3974
3975 memset(ci, 0, sizeof(*ci));
3976 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3977
3978 dcmd->mbox.b[0] = query_type;
3979 if (instance->supportmax256vd)
3980 dcmd->mbox.b[2] = 1;
3981
3982 dcmd->cmd = MFI_CMD_DCMD;
3983 dcmd->cmd_status = 0xFF;
3984 dcmd->sge_count = 1;
3985 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
3986 dcmd->timeout = 0;
3987 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
3988 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY);
3989 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
3990 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
3991 dcmd->pad_0 = 0;
3992
3993 if (instance->ctrl_context && !instance->mask_interrupts)
3994 ret = megasas_issue_blocked_cmd(instance, cmd,
3995 MEGASAS_BLOCKED_CMD_TIMEOUT);
3996 else
3997 ret = megasas_issue_polled(instance, cmd);
3998
3999 tgtid_count = le32_to_cpu(ci->count);
4000
4001 if ((ret == 0) && (tgtid_count <= (instance->fw_supported_vd_count))) {
4002 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
4003 for (ld_index = 0; ld_index < tgtid_count; ld_index++) {
4004 ids = ci->targetId[ld_index];
4005 instance->ld_ids[ids] = ci->targetId[ld_index];
4006 }
4007
4008 }
4009
4010 pci_free_consistent(instance->pdev, sizeof(struct MR_LD_TARGETID_LIST),
4011 ci, ci_h);
4012
4013 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
4014 megasas_return_mfi_mpt_pthr(instance, cmd,
4015 cmd->mpt_pthr_cmd_blocked);
4016 else
4017 megasas_return_cmd(instance, cmd);
4018
4019 return ret;
4020 }
4021
4022 /*
4023 * megasas_update_ext_vd_details : Update details w.r.t Extended VD
4024 * instance : Controller's instance
4025 */
4026 static void megasas_update_ext_vd_details(struct megasas_instance *instance)
4027 {
4028 struct fusion_context *fusion;
4029 u32 old_map_sz;
4030 u32 new_map_sz;
4031
4032 fusion = instance->ctrl_context;
4033 /* For MFI based controllers return dummy success */
4034 if (!fusion)
4035 return;
4036
4037 instance->supportmax256vd =
4038 instance->ctrl_info->adapterOperations3.supportMaxExtLDs;
4039 /* Below is additional check to address future FW enhancement */
4040 if (instance->ctrl_info->max_lds > 64)
4041 instance->supportmax256vd = 1;
4042
4043 instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS
4044 * MEGASAS_MAX_DEV_PER_CHANNEL;
4045 instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS
4046 * MEGASAS_MAX_DEV_PER_CHANNEL;
4047 if (instance->supportmax256vd) {
4048 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT;
4049 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
4050 } else {
4051 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
4052 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
4053 }
4054 dev_info(&instance->pdev->dev, "Firmware supports %d VD %d PD\n",
4055 instance->fw_supported_vd_count,
4056 instance->fw_supported_pd_count);
4057 dev_info(&instance->pdev->dev, "Driver supports %d VD %d PD\n",
4058 instance->drv_supported_vd_count,
4059 instance->drv_supported_pd_count);
4060
4061 old_map_sz = sizeof(struct MR_FW_RAID_MAP) +
4062 (sizeof(struct MR_LD_SPAN_MAP) *
4063 (instance->fw_supported_vd_count - 1));
4064 new_map_sz = sizeof(struct MR_FW_RAID_MAP_EXT);
4065 fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP) +
4066 (sizeof(struct MR_LD_SPAN_MAP) *
4067 (instance->drv_supported_vd_count - 1));
4068
4069 fusion->max_map_sz = max(old_map_sz, new_map_sz);
4070
4071
4072 if (instance->supportmax256vd)
4073 fusion->current_map_sz = new_map_sz;
4074 else
4075 fusion->current_map_sz = old_map_sz;
4076
4077 }
4078
4079 /**
4080 * megasas_get_controller_info - Returns FW's controller structure
4081 * @instance: Adapter soft state
4082 *
4083 * Issues an internal command (DCMD) to get the FW's controller structure.
4084 * This information is mainly used to find out the maximum IO transfer per
4085 * command supported by the FW.
4086 */
4087 int
4088 megasas_get_ctrl_info(struct megasas_instance *instance)
4089 {
4090 int ret = 0;
4091 struct megasas_cmd *cmd;
4092 struct megasas_dcmd_frame *dcmd;
4093 struct megasas_ctrl_info *ci;
4094 struct megasas_ctrl_info *ctrl_info;
4095 dma_addr_t ci_h = 0;
4096
4097 ctrl_info = instance->ctrl_info;
4098
4099 cmd = megasas_get_cmd(instance);
4100
4101 if (!cmd) {
4102 printk(KERN_DEBUG "megasas: Failed to get a free cmd\n");
4103 return -ENOMEM;
4104 }
4105
4106 dcmd = &cmd->frame->dcmd;
4107
4108 ci = pci_alloc_consistent(instance->pdev,
4109 sizeof(struct megasas_ctrl_info), &ci_h);
4110
4111 if (!ci) {
4112 printk(KERN_DEBUG "Failed to alloc mem for ctrl info\n");
4113 megasas_return_cmd(instance, cmd);
4114 return -ENOMEM;
4115 }
4116
4117 memset(ci, 0, sizeof(*ci));
4118 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4119
4120 dcmd->cmd = MFI_CMD_DCMD;
4121 dcmd->cmd_status = 0xFF;
4122 dcmd->sge_count = 1;
4123 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4124 dcmd->timeout = 0;
4125 dcmd->pad_0 = 0;
4126 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info));
4127 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO);
4128 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
4129 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_ctrl_info));
4130 dcmd->mbox.b[0] = 1;
4131
4132 if (instance->ctrl_context && !instance->mask_interrupts)
4133 ret = megasas_issue_blocked_cmd(instance, cmd,
4134 MEGASAS_BLOCKED_CMD_TIMEOUT);
4135 else
4136 ret = megasas_issue_polled(instance, cmd);
4137
4138 if (!ret) {
4139 memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info));
4140 le32_to_cpus((u32 *)&ctrl_info->properties.OnOffProperties);
4141 le32_to_cpus((u32 *)&ctrl_info->adapterOperations2);
4142 le32_to_cpus((u32 *)&ctrl_info->adapterOperations3);
4143 megasas_update_ext_vd_details(instance);
4144 }
4145
4146 pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info),
4147 ci, ci_h);
4148
4149 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
4150 megasas_return_mfi_mpt_pthr(instance, cmd,
4151 cmd->mpt_pthr_cmd_blocked);
4152 else
4153 megasas_return_cmd(instance, cmd);
4154 return ret;
4155 }
4156
4157 /*
4158 * megasas_set_crash_dump_params - Sends address of crash dump DMA buffer
4159 * to firmware
4160 *
4161 * @instance: Adapter soft state
4162 * @crash_buf_state - tell FW to turn ON/OFF crash dump feature
4163 MR_CRASH_BUF_TURN_OFF = 0
4164 MR_CRASH_BUF_TURN_ON = 1
4165 * @return 0 on success non-zero on failure.
4166 * Issues an internal command (DCMD) to set parameters for crash dump feature.
4167 * Driver will send address of crash dump DMA buffer and set mbox to tell FW
4168 * that driver supports crash dump feature. This DCMD will be sent only if
4169 * crash dump feature is supported by the FW.
4170 *
4171 */
4172 int megasas_set_crash_dump_params(struct megasas_instance *instance,
4173 u8 crash_buf_state)
4174 {
4175 int ret = 0;
4176 struct megasas_cmd *cmd;
4177 struct megasas_dcmd_frame *dcmd;
4178
4179 cmd = megasas_get_cmd(instance);
4180
4181 if (!cmd) {
4182 dev_err(&instance->pdev->dev, "Failed to get a free cmd\n");
4183 return -ENOMEM;
4184 }
4185
4186
4187 dcmd = &cmd->frame->dcmd;
4188
4189 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4190 dcmd->mbox.b[0] = crash_buf_state;
4191 dcmd->cmd = MFI_CMD_DCMD;
4192 dcmd->cmd_status = 0xFF;
4193 dcmd->sge_count = 1;
4194 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
4195 dcmd->timeout = 0;
4196 dcmd->pad_0 = 0;
4197 dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE);
4198 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS);
4199 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->crash_dump_h);
4200 dcmd->sgl.sge32[0].length = cpu_to_le32(CRASH_DMA_BUF_SIZE);
4201
4202 if (instance->ctrl_context && !instance->mask_interrupts)
4203 ret = megasas_issue_blocked_cmd(instance, cmd,
4204 MEGASAS_BLOCKED_CMD_TIMEOUT);
4205 else
4206 ret = megasas_issue_polled(instance, cmd);
4207
4208 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
4209 megasas_return_mfi_mpt_pthr(instance, cmd,
4210 cmd->mpt_pthr_cmd_blocked);
4211 else
4212 megasas_return_cmd(instance, cmd);
4213 return ret;
4214 }
4215
4216 /**
4217 * megasas_issue_init_mfi - Initializes the FW
4218 * @instance: Adapter soft state
4219 *
4220 * Issues the INIT MFI cmd
4221 */
4222 static int
4223 megasas_issue_init_mfi(struct megasas_instance *instance)
4224 {
4225 u32 context;
4226
4227 struct megasas_cmd *cmd;
4228
4229 struct megasas_init_frame *init_frame;
4230 struct megasas_init_queue_info *initq_info;
4231 dma_addr_t init_frame_h;
4232 dma_addr_t initq_info_h;
4233
4234 /*
4235 * Prepare a init frame. Note the init frame points to queue info
4236 * structure. Each frame has SGL allocated after first 64 bytes. For
4237 * this frame - since we don't need any SGL - we use SGL's space as
4238 * queue info structure
4239 *
4240 * We will not get a NULL command below. We just created the pool.
4241 */
4242 cmd = megasas_get_cmd(instance);
4243
4244 init_frame = (struct megasas_init_frame *)cmd->frame;
4245 initq_info = (struct megasas_init_queue_info *)
4246 ((unsigned long)init_frame + 64);
4247
4248 init_frame_h = cmd->frame_phys_addr;
4249 initq_info_h = init_frame_h + 64;
4250
4251 context = init_frame->context;
4252 memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
4253 memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
4254 init_frame->context = context;
4255
4256 initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1);
4257 initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h);
4258
4259 initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h);
4260 initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h);
4261
4262 init_frame->cmd = MFI_CMD_INIT;
4263 init_frame->cmd_status = 0xFF;
4264 init_frame->queue_info_new_phys_addr_lo =
4265 cpu_to_le32(lower_32_bits(initq_info_h));
4266 init_frame->queue_info_new_phys_addr_hi =
4267 cpu_to_le32(upper_32_bits(initq_info_h));
4268
4269 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info));
4270
4271 /*
4272 * disable the intr before firing the init frame to FW
4273 */
4274 instance->instancet->disable_intr(instance);
4275
4276 /*
4277 * Issue the init frame in polled mode
4278 */
4279
4280 if (megasas_issue_polled(instance, cmd)) {
4281 printk(KERN_ERR "megasas: Failed to init firmware\n");
4282 megasas_return_cmd(instance, cmd);
4283 goto fail_fw_init;
4284 }
4285
4286 megasas_return_cmd(instance, cmd);
4287
4288 return 0;
4289
4290 fail_fw_init:
4291 return -EINVAL;
4292 }
4293
4294 static u32
4295 megasas_init_adapter_mfi(struct megasas_instance *instance)
4296 {
4297 struct megasas_register_set __iomem *reg_set;
4298 u32 context_sz;
4299 u32 reply_q_sz;
4300
4301 reg_set = instance->reg_set;
4302
4303 /*
4304 * Get various operational parameters from status register
4305 */
4306 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF;
4307 /*
4308 * Reduce the max supported cmds by 1. This is to ensure that the
4309 * reply_q_sz (1 more than the max cmd that driver may send)
4310 * does not exceed max cmds that the FW can support
4311 */
4312 instance->max_fw_cmds = instance->max_fw_cmds-1;
4313 instance->max_mfi_cmds = instance->max_fw_cmds;
4314 instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >>
4315 0x10;
4316 /*
4317 * Create a pool of commands
4318 */
4319 if (megasas_alloc_cmds(instance))
4320 goto fail_alloc_cmds;
4321
4322 /*
4323 * Allocate memory for reply queue. Length of reply queue should
4324 * be _one_ more than the maximum commands handled by the firmware.
4325 *
4326 * Note: When FW completes commands, it places corresponding contex
4327 * values in this circular reply queue. This circular queue is a fairly
4328 * typical producer-consumer queue. FW is the producer (of completed
4329 * commands) and the driver is the consumer.
4330 */
4331 context_sz = sizeof(u32);
4332 reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
4333
4334 instance->reply_queue = pci_alloc_consistent(instance->pdev,
4335 reply_q_sz,
4336 &instance->reply_queue_h);
4337
4338 if (!instance->reply_queue) {
4339 printk(KERN_DEBUG "megasas: Out of DMA mem for reply queue\n");
4340 goto fail_reply_queue;
4341 }
4342
4343 if (megasas_issue_init_mfi(instance))
4344 goto fail_fw_init;
4345
4346 if (megasas_get_ctrl_info(instance)) {
4347 dev_err(&instance->pdev->dev, "(%d): Could get controller info "
4348 "Fail from %s %d\n", instance->unique_id,
4349 __func__, __LINE__);
4350 goto fail_fw_init;
4351 }
4352
4353 instance->fw_support_ieee = 0;
4354 instance->fw_support_ieee =
4355 (instance->instancet->read_fw_status_reg(reg_set) &
4356 0x04000000);
4357
4358 printk(KERN_NOTICE "megasas_init_mfi: fw_support_ieee=%d",
4359 instance->fw_support_ieee);
4360
4361 if (instance->fw_support_ieee)
4362 instance->flag_ieee = 1;
4363
4364 return 0;
4365
4366 fail_fw_init:
4367
4368 pci_free_consistent(instance->pdev, reply_q_sz,
4369 instance->reply_queue, instance->reply_queue_h);
4370 fail_reply_queue:
4371 megasas_free_cmds(instance);
4372
4373 fail_alloc_cmds:
4374 return 1;
4375 }
4376
4377 /**
4378 * megasas_init_fw - Initializes the FW
4379 * @instance: Adapter soft state
4380 *
4381 * This is the main function for initializing firmware
4382 */
4383
4384 static int megasas_init_fw(struct megasas_instance *instance)
4385 {
4386 u32 max_sectors_1;
4387 u32 max_sectors_2;
4388 u32 tmp_sectors, msix_enable, scratch_pad_2;
4389 resource_size_t base_addr;
4390 struct megasas_register_set __iomem *reg_set;
4391 struct megasas_ctrl_info *ctrl_info = NULL;
4392 unsigned long bar_list;
4393 int i, loop, fw_msix_count = 0;
4394 struct IOV_111 *iovPtr;
4395
4396 /* Find first memory bar */
4397 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
4398 instance->bar = find_first_bit(&bar_list, sizeof(unsigned long));
4399 if (pci_request_selected_regions(instance->pdev, instance->bar,
4400 "megasas: LSI")) {
4401 printk(KERN_DEBUG "megasas: IO memory region busy!\n");
4402 return -EBUSY;
4403 }
4404
4405 base_addr = pci_resource_start(instance->pdev, instance->bar);
4406 instance->reg_set = ioremap_nocache(base_addr, 8192);
4407
4408 if (!instance->reg_set) {
4409 printk(KERN_DEBUG "megasas: Failed to map IO mem\n");
4410 goto fail_ioremap;
4411 }
4412
4413 reg_set = instance->reg_set;
4414
4415 switch (instance->pdev->device) {
4416 case PCI_DEVICE_ID_LSI_FUSION:
4417 case PCI_DEVICE_ID_LSI_PLASMA:
4418 case PCI_DEVICE_ID_LSI_INVADER:
4419 case PCI_DEVICE_ID_LSI_FURY:
4420 instance->instancet = &megasas_instance_template_fusion;
4421 break;
4422 case PCI_DEVICE_ID_LSI_SAS1078R:
4423 case PCI_DEVICE_ID_LSI_SAS1078DE:
4424 instance->instancet = &megasas_instance_template_ppc;
4425 break;
4426 case PCI_DEVICE_ID_LSI_SAS1078GEN2:
4427 case PCI_DEVICE_ID_LSI_SAS0079GEN2:
4428 instance->instancet = &megasas_instance_template_gen2;
4429 break;
4430 case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
4431 case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
4432 instance->instancet = &megasas_instance_template_skinny;
4433 break;
4434 case PCI_DEVICE_ID_LSI_SAS1064R:
4435 case PCI_DEVICE_ID_DELL_PERC5:
4436 default:
4437 instance->instancet = &megasas_instance_template_xscale;
4438 break;
4439 }
4440
4441 if (megasas_transition_to_ready(instance, 0)) {
4442 atomic_set(&instance->fw_reset_no_pci_access, 1);
4443 instance->instancet->adp_reset
4444 (instance, instance->reg_set);
4445 atomic_set(&instance->fw_reset_no_pci_access, 0);
4446 dev_info(&instance->pdev->dev,
4447 "megasas: FW restarted successfully from %s!\n",
4448 __func__);
4449
4450 /*waitting for about 30 second before retry*/
4451 ssleep(30);
4452
4453 if (megasas_transition_to_ready(instance, 0))
4454 goto fail_ready_state;
4455 }
4456
4457 /*
4458 * MSI-X host index 0 is common for all adapter.
4459 * It is used for all MPT based Adapters.
4460 */
4461 instance->reply_post_host_index_addr[0] =
4462 (u32 *)((u8 *)instance->reg_set +
4463 MPI2_REPLY_POST_HOST_INDEX_OFFSET);
4464
4465 /* Check if MSI-X is supported while in ready state */
4466 msix_enable = (instance->instancet->read_fw_status_reg(reg_set) &
4467 0x4000000) >> 0x1a;
4468 if (msix_enable && !msix_disable) {
4469 scratch_pad_2 = readl
4470 (&instance->reg_set->outbound_scratch_pad_2);
4471 /* Check max MSI-X vectors */
4472 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
4473 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA)) {
4474 instance->msix_vectors = (scratch_pad_2
4475 & MR_MAX_REPLY_QUEUES_OFFSET) + 1;
4476 fw_msix_count = instance->msix_vectors;
4477 if (msix_vectors)
4478 instance->msix_vectors =
4479 min(msix_vectors,
4480 instance->msix_vectors);
4481 } else if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)
4482 || (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
4483 /* Invader/Fury supports more than 8 MSI-X */
4484 instance->msix_vectors = ((scratch_pad_2
4485 & MR_MAX_REPLY_QUEUES_EXT_OFFSET)
4486 >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1;
4487 fw_msix_count = instance->msix_vectors;
4488 /* Save 1-15 reply post index address to local memory
4489 * Index 0 is already saved from reg offset
4490 * MPI2_REPLY_POST_HOST_INDEX_OFFSET
4491 */
4492 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) {
4493 instance->reply_post_host_index_addr[loop] =
4494 (u32 *)((u8 *)instance->reg_set +
4495 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET
4496 + (loop * 0x10));
4497 }
4498 if (msix_vectors)
4499 instance->msix_vectors = min(msix_vectors,
4500 instance->msix_vectors);
4501 } else
4502 instance->msix_vectors = 1;
4503 /* Don't bother allocating more MSI-X vectors than cpus */
4504 instance->msix_vectors = min(instance->msix_vectors,
4505 (unsigned int)num_online_cpus());
4506 for (i = 0; i < instance->msix_vectors; i++)
4507 instance->msixentry[i].entry = i;
4508 i = pci_enable_msix_range(instance->pdev, instance->msixentry,
4509 1, instance->msix_vectors);
4510 if (i > 0)
4511 instance->msix_vectors = i;
4512 else
4513 instance->msix_vectors = 0;
4514
4515 dev_info(&instance->pdev->dev, "[scsi%d]: FW supports"
4516 "<%d> MSIX vector,Online CPUs: <%d>,"
4517 "Current MSIX <%d>\n", instance->host->host_no,
4518 fw_msix_count, (unsigned int)num_online_cpus(),
4519 instance->msix_vectors);
4520 }
4521
4522 instance->ctrl_info = kzalloc(sizeof(struct megasas_ctrl_info),
4523 GFP_KERNEL);
4524 if (instance->ctrl_info == NULL)
4525 goto fail_init_adapter;
4526
4527 /*
4528 * Below are default value for legacy Firmware.
4529 * non-fusion based controllers
4530 */
4531 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
4532 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
4533 /* Get operational params, sge flags, send init cmd to controller */
4534 if (instance->instancet->init_adapter(instance))
4535 goto fail_init_adapter;
4536
4537 printk(KERN_ERR "megasas: INIT adapter done\n");
4538
4539 /** for passthrough
4540 * the following function will get the PD LIST.
4541 */
4542
4543 memset(instance->pd_list, 0 ,
4544 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)));
4545 if (megasas_get_pd_list(instance) < 0) {
4546 printk(KERN_ERR "megasas: failed to get PD list\n");
4547 goto fail_init_adapter;
4548 }
4549
4550 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
4551 if (megasas_ld_list_query(instance,
4552 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
4553 megasas_get_ld_list(instance);
4554
4555 /*
4556 * Compute the max allowed sectors per IO: The controller info has two
4557 * limits on max sectors. Driver should use the minimum of these two.
4558 *
4559 * 1 << stripe_sz_ops.min = max sectors per strip
4560 *
4561 * Note that older firmwares ( < FW ver 30) didn't report information
4562 * to calculate max_sectors_1. So the number ended up as zero always.
4563 */
4564 tmp_sectors = 0;
4565 ctrl_info = instance->ctrl_info;
4566
4567 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
4568 le16_to_cpu(ctrl_info->max_strips_per_io);
4569 max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size);
4570
4571 tmp_sectors = min_t(u32, max_sectors_1 , max_sectors_2);
4572
4573 /*Check whether controller is iMR or MR */
4574 if (ctrl_info->memory_size) {
4575 instance->is_imr = 0;
4576 dev_info(&instance->pdev->dev, "Controller type: MR,"
4577 "Memory size is: %dMB\n",
4578 le16_to_cpu(ctrl_info->memory_size));
4579 } else {
4580 instance->is_imr = 1;
4581 dev_info(&instance->pdev->dev,
4582 "Controller type: iMR\n");
4583 }
4584 instance->disableOnlineCtrlReset =
4585 ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset;
4586 instance->mpio = ctrl_info->adapterOperations2.mpio;
4587 instance->UnevenSpanSupport =
4588 ctrl_info->adapterOperations2.supportUnevenSpans;
4589 if (instance->UnevenSpanSupport) {
4590 struct fusion_context *fusion = instance->ctrl_context;
4591
4592 dev_info(&instance->pdev->dev, "FW supports: "
4593 "UnevenSpanSupport=%x\n", instance->UnevenSpanSupport);
4594 if (MR_ValidateMapInfo(instance))
4595 fusion->fast_path_io = 1;
4596 else
4597 fusion->fast_path_io = 0;
4598
4599 }
4600 if (ctrl_info->host_interface.SRIOV) {
4601 if (!ctrl_info->adapterOperations2.activePassive)
4602 instance->PlasmaFW111 = 1;
4603
4604 if (!instance->PlasmaFW111)
4605 instance->requestorId =
4606 ctrl_info->iov.requestorId;
4607 else {
4608 iovPtr = (struct IOV_111 *)((unsigned char *)ctrl_info + IOV_111_OFFSET);
4609 instance->requestorId = iovPtr->requestorId;
4610 }
4611 dev_warn(&instance->pdev->dev, "I am VF "
4612 "requestorId %d\n", instance->requestorId);
4613 }
4614
4615 instance->crash_dump_fw_support =
4616 ctrl_info->adapterOperations3.supportCrashDump;
4617 instance->crash_dump_drv_support =
4618 (instance->crash_dump_fw_support &&
4619 instance->crash_dump_buf);
4620 if (instance->crash_dump_drv_support) {
4621 dev_info(&instance->pdev->dev, "Firmware Crash dump "
4622 "feature is supported\n");
4623 megasas_set_crash_dump_params(instance,
4624 MR_CRASH_BUF_TURN_OFF);
4625
4626 } else {
4627 if (instance->crash_dump_buf)
4628 pci_free_consistent(instance->pdev,
4629 CRASH_DMA_BUF_SIZE,
4630 instance->crash_dump_buf,
4631 instance->crash_dump_h);
4632 instance->crash_dump_buf = NULL;
4633 }
4634 instance->max_sectors_per_req = instance->max_num_sge *
4635 PAGE_SIZE / 512;
4636 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
4637 instance->max_sectors_per_req = tmp_sectors;
4638
4639 /* Check for valid throttlequeuedepth module parameter */
4640 if (instance->is_imr) {
4641 if (throttlequeuedepth > (instance->max_fw_cmds -
4642 MEGASAS_SKINNY_INT_CMDS))
4643 instance->throttlequeuedepth =
4644 MEGASAS_THROTTLE_QUEUE_DEPTH;
4645 else
4646 instance->throttlequeuedepth = throttlequeuedepth;
4647 } else {
4648 if (throttlequeuedepth > (instance->max_fw_cmds -
4649 MEGASAS_INT_CMDS))
4650 instance->throttlequeuedepth =
4651 MEGASAS_THROTTLE_QUEUE_DEPTH;
4652 else
4653 instance->throttlequeuedepth = throttlequeuedepth;
4654 }
4655
4656 /*
4657 * Setup tasklet for cmd completion
4658 */
4659
4660 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
4661 (unsigned long)instance);
4662
4663 /* Launch SR-IOV heartbeat timer */
4664 if (instance->requestorId) {
4665 if (!megasas_sriov_start_heartbeat(instance, 1))
4666 megasas_start_timer(instance,
4667 &instance->sriov_heartbeat_timer,
4668 megasas_sriov_heartbeat_handler,
4669 MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
4670 else
4671 instance->skip_heartbeat_timer_del = 1;
4672 }
4673
4674 return 0;
4675
4676 fail_init_adapter:
4677 fail_ready_state:
4678 kfree(instance->ctrl_info);
4679 instance->ctrl_info = NULL;
4680 iounmap(instance->reg_set);
4681
4682 fail_ioremap:
4683 pci_release_selected_regions(instance->pdev, instance->bar);
4684
4685 return -EINVAL;
4686 }
4687
4688 /**
4689 * megasas_release_mfi - Reverses the FW initialization
4690 * @intance: Adapter soft state
4691 */
4692 static void megasas_release_mfi(struct megasas_instance *instance)
4693 {
4694 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
4695
4696 if (instance->reply_queue)
4697 pci_free_consistent(instance->pdev, reply_q_sz,
4698 instance->reply_queue, instance->reply_queue_h);
4699
4700 megasas_free_cmds(instance);
4701
4702 iounmap(instance->reg_set);
4703
4704 pci_release_selected_regions(instance->pdev, instance->bar);
4705 }
4706
4707 /**
4708 * megasas_get_seq_num - Gets latest event sequence numbers
4709 * @instance: Adapter soft state
4710 * @eli: FW event log sequence numbers information
4711 *
4712 * FW maintains a log of all events in a non-volatile area. Upper layers would
4713 * usually find out the latest sequence number of the events, the seq number at
4714 * the boot etc. They would "read" all the events below the latest seq number
4715 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
4716 * number), they would subsribe to AEN (asynchronous event notification) and
4717 * wait for the events to happen.
4718 */
4719 static int
4720 megasas_get_seq_num(struct megasas_instance *instance,
4721 struct megasas_evt_log_info *eli)
4722 {
4723 struct megasas_cmd *cmd;
4724 struct megasas_dcmd_frame *dcmd;
4725 struct megasas_evt_log_info *el_info;
4726 dma_addr_t el_info_h = 0;
4727
4728 cmd = megasas_get_cmd(instance);
4729
4730 if (!cmd) {
4731 return -ENOMEM;
4732 }
4733
4734 dcmd = &cmd->frame->dcmd;
4735 el_info = pci_alloc_consistent(instance->pdev,
4736 sizeof(struct megasas_evt_log_info),
4737 &el_info_h);
4738
4739 if (!el_info) {
4740 megasas_return_cmd(instance, cmd);
4741 return -ENOMEM;
4742 }
4743
4744 memset(el_info, 0, sizeof(*el_info));
4745 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4746
4747 dcmd->cmd = MFI_CMD_DCMD;
4748 dcmd->cmd_status = 0x0;
4749 dcmd->sge_count = 1;
4750 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4751 dcmd->timeout = 0;
4752 dcmd->pad_0 = 0;
4753 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info));
4754 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO);
4755 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(el_info_h);
4756 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_log_info));
4757
4758 if (megasas_issue_blocked_cmd(instance, cmd, 30))
4759 dev_err(&instance->pdev->dev, "Command timedout"
4760 "from %s\n", __func__);
4761 else {
4762 /*
4763 * Copy the data back into callers buffer
4764 */
4765 eli->newest_seq_num = le32_to_cpu(el_info->newest_seq_num);
4766 eli->oldest_seq_num = le32_to_cpu(el_info->oldest_seq_num);
4767 eli->clear_seq_num = le32_to_cpu(el_info->clear_seq_num);
4768 eli->shutdown_seq_num = le32_to_cpu(el_info->shutdown_seq_num);
4769 eli->boot_seq_num = le32_to_cpu(el_info->boot_seq_num);
4770 }
4771
4772 pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info),
4773 el_info, el_info_h);
4774
4775 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
4776 megasas_return_mfi_mpt_pthr(instance, cmd,
4777 cmd->mpt_pthr_cmd_blocked);
4778 else
4779 megasas_return_cmd(instance, cmd);
4780
4781 return 0;
4782 }
4783
4784 /**
4785 * megasas_register_aen - Registers for asynchronous event notification
4786 * @instance: Adapter soft state
4787 * @seq_num: The starting sequence number
4788 * @class_locale: Class of the event
4789 *
4790 * This function subscribes for AEN for events beyond the @seq_num. It requests
4791 * to be notified if and only if the event is of type @class_locale
4792 */
4793 static int
4794 megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
4795 u32 class_locale_word)
4796 {
4797 int ret_val;
4798 struct megasas_cmd *cmd;
4799 struct megasas_dcmd_frame *dcmd;
4800 union megasas_evt_class_locale curr_aen;
4801 union megasas_evt_class_locale prev_aen;
4802
4803 /*
4804 * If there an AEN pending already (aen_cmd), check if the
4805 * class_locale of that pending AEN is inclusive of the new
4806 * AEN request we currently have. If it is, then we don't have
4807 * to do anything. In other words, whichever events the current
4808 * AEN request is subscribing to, have already been subscribed
4809 * to.
4810 *
4811 * If the old_cmd is _not_ inclusive, then we have to abort
4812 * that command, form a class_locale that is superset of both
4813 * old and current and re-issue to the FW
4814 */
4815
4816 curr_aen.word = class_locale_word;
4817
4818 if (instance->aen_cmd) {
4819
4820 prev_aen.word = instance->aen_cmd->frame->dcmd.mbox.w[1];
4821 prev_aen.members.locale = le16_to_cpu(prev_aen.members.locale);
4822
4823 /*
4824 * A class whose enum value is smaller is inclusive of all
4825 * higher values. If a PROGRESS (= -1) was previously
4826 * registered, then a new registration requests for higher
4827 * classes need not be sent to FW. They are automatically
4828 * included.
4829 *
4830 * Locale numbers don't have such hierarchy. They are bitmap
4831 * values
4832 */
4833 if ((prev_aen.members.class <= curr_aen.members.class) &&
4834 !((prev_aen.members.locale & curr_aen.members.locale) ^
4835 curr_aen.members.locale)) {
4836 /*
4837 * Previously issued event registration includes
4838 * current request. Nothing to do.
4839 */
4840 return 0;
4841 } else {
4842 curr_aen.members.locale |= prev_aen.members.locale;
4843
4844 if (prev_aen.members.class < curr_aen.members.class)
4845 curr_aen.members.class = prev_aen.members.class;
4846
4847 instance->aen_cmd->abort_aen = 1;
4848 ret_val = megasas_issue_blocked_abort_cmd(instance,
4849 instance->
4850 aen_cmd, 30);
4851
4852 if (ret_val) {
4853 printk(KERN_DEBUG "megasas: Failed to abort "
4854 "previous AEN command\n");
4855 return ret_val;
4856 }
4857 }
4858 }
4859
4860 cmd = megasas_get_cmd(instance);
4861
4862 if (!cmd)
4863 return -ENOMEM;
4864
4865 dcmd = &cmd->frame->dcmd;
4866
4867 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
4868
4869 /*
4870 * Prepare DCMD for aen registration
4871 */
4872 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4873
4874 dcmd->cmd = MFI_CMD_DCMD;
4875 dcmd->cmd_status = 0x0;
4876 dcmd->sge_count = 1;
4877 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4878 dcmd->timeout = 0;
4879 dcmd->pad_0 = 0;
4880 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail));
4881 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT);
4882 dcmd->mbox.w[0] = cpu_to_le32(seq_num);
4883 instance->last_seq_num = seq_num;
4884 dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word);
4885 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->evt_detail_h);
4886 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_detail));
4887
4888 if (instance->aen_cmd != NULL) {
4889 megasas_return_cmd(instance, cmd);
4890 return 0;
4891 }
4892
4893 /*
4894 * Store reference to the cmd used to register for AEN. When an
4895 * application wants us to register for AEN, we have to abort this
4896 * cmd and re-register with a new EVENT LOCALE supplied by that app
4897 */
4898 instance->aen_cmd = cmd;
4899
4900 /*
4901 * Issue the aen registration frame
4902 */
4903 instance->instancet->issue_dcmd(instance, cmd);
4904
4905 return 0;
4906 }
4907
4908 /**
4909 * megasas_start_aen - Subscribes to AEN during driver load time
4910 * @instance: Adapter soft state
4911 */
4912 static int megasas_start_aen(struct megasas_instance *instance)
4913 {
4914 struct megasas_evt_log_info eli;
4915 union megasas_evt_class_locale class_locale;
4916
4917 /*
4918 * Get the latest sequence number from FW
4919 */
4920 memset(&eli, 0, sizeof(eli));
4921
4922 if (megasas_get_seq_num(instance, &eli))
4923 return -1;
4924
4925 /*
4926 * Register AEN with FW for latest sequence number plus 1
4927 */
4928 class_locale.members.reserved = 0;
4929 class_locale.members.locale = MR_EVT_LOCALE_ALL;
4930 class_locale.members.class = MR_EVT_CLASS_DEBUG;
4931
4932 return megasas_register_aen(instance,
4933 eli.newest_seq_num + 1,
4934 class_locale.word);
4935 }
4936
4937 /**
4938 * megasas_io_attach - Attaches this driver to SCSI mid-layer
4939 * @instance: Adapter soft state
4940 */
4941 static int megasas_io_attach(struct megasas_instance *instance)
4942 {
4943 struct Scsi_Host *host = instance->host;
4944
4945 /*
4946 * Export parameters required by SCSI mid-layer
4947 */
4948 host->irq = instance->pdev->irq;
4949 host->unique_id = instance->unique_id;
4950 if (instance->is_imr) {
4951 host->can_queue =
4952 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS;
4953 } else
4954 host->can_queue =
4955 instance->max_fw_cmds - MEGASAS_INT_CMDS;
4956 host->this_id = instance->init_id;
4957 host->sg_tablesize = instance->max_num_sge;
4958
4959 if (instance->fw_support_ieee)
4960 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
4961
4962 /*
4963 * Check if the module parameter value for max_sectors can be used
4964 */
4965 if (max_sectors && max_sectors < instance->max_sectors_per_req)
4966 instance->max_sectors_per_req = max_sectors;
4967 else {
4968 if (max_sectors) {
4969 if (((instance->pdev->device ==
4970 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
4971 (instance->pdev->device ==
4972 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
4973 (max_sectors <= MEGASAS_MAX_SECTORS)) {
4974 instance->max_sectors_per_req = max_sectors;
4975 } else {
4976 printk(KERN_INFO "megasas: max_sectors should be > 0"
4977 "and <= %d (or < 1MB for GEN2 controller)\n",
4978 instance->max_sectors_per_req);
4979 }
4980 }
4981 }
4982
4983 host->max_sectors = instance->max_sectors_per_req;
4984 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
4985 host->max_channel = MEGASAS_MAX_CHANNELS - 1;
4986 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
4987 host->max_lun = MEGASAS_MAX_LUN;
4988 host->max_cmd_len = 16;
4989
4990 /* Fusion only supports host reset */
4991 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
4992 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) ||
4993 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
4994 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
4995 host->hostt->eh_device_reset_handler = NULL;
4996 host->hostt->eh_bus_reset_handler = NULL;
4997 }
4998
4999 /*
5000 * Notify the mid-layer about the new controller
5001 */
5002 if (scsi_add_host(host, &instance->pdev->dev)) {
5003 printk(KERN_DEBUG "megasas: scsi_add_host failed\n");
5004 return -ENODEV;
5005 }
5006
5007 return 0;
5008 }
5009
5010 static int
5011 megasas_set_dma_mask(struct pci_dev *pdev)
5012 {
5013 /*
5014 * All our contollers are capable of performing 64-bit DMA
5015 */
5016 if (IS_DMA64) {
5017 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) {
5018
5019 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
5020 goto fail_set_dma_mask;
5021 }
5022 } else {
5023 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
5024 goto fail_set_dma_mask;
5025 }
5026 /*
5027 * Ensure that all data structures are allocated in 32-bit
5028 * memory.
5029 */
5030 if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) {
5031 /* Try 32bit DMA mask and 32 bit Consistent dma mask */
5032 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))
5033 && !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
5034 dev_info(&pdev->dev, "set 32bit DMA mask"
5035 "and 32 bit consistent mask\n");
5036 else
5037 goto fail_set_dma_mask;
5038 }
5039
5040 return 0;
5041
5042 fail_set_dma_mask:
5043 return 1;
5044 }
5045
5046 /**
5047 * megasas_probe_one - PCI hotplug entry point
5048 * @pdev: PCI device structure
5049 * @id: PCI ids of supported hotplugged adapter
5050 */
5051 static int megasas_probe_one(struct pci_dev *pdev,
5052 const struct pci_device_id *id)
5053 {
5054 int rval, pos, i, j, cpu;
5055 struct Scsi_Host *host;
5056 struct megasas_instance *instance;
5057 u16 control = 0;
5058 struct fusion_context *fusion = NULL;
5059
5060 /* Reset MSI-X in the kdump kernel */
5061 if (reset_devices) {
5062 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
5063 if (pos) {
5064 pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS,
5065 &control);
5066 if (control & PCI_MSIX_FLAGS_ENABLE) {
5067 dev_info(&pdev->dev, "resetting MSI-X\n");
5068 pci_write_config_word(pdev,
5069 pos + PCI_MSIX_FLAGS,
5070 control &
5071 ~PCI_MSIX_FLAGS_ENABLE);
5072 }
5073 }
5074 }
5075
5076 /*
5077 * Announce PCI information
5078 */
5079 printk(KERN_INFO "megasas: %#4.04x:%#4.04x:%#4.04x:%#4.04x: ",
5080 pdev->vendor, pdev->device, pdev->subsystem_vendor,
5081 pdev->subsystem_device);
5082
5083 printk("bus %d:slot %d:func %d\n",
5084 pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn));
5085
5086 /*
5087 * PCI prepping: enable device set bus mastering and dma mask
5088 */
5089 rval = pci_enable_device_mem(pdev);
5090
5091 if (rval) {
5092 return rval;
5093 }
5094
5095 pci_set_master(pdev);
5096
5097 if (megasas_set_dma_mask(pdev))
5098 goto fail_set_dma_mask;
5099
5100 host = scsi_host_alloc(&megasas_template,
5101 sizeof(struct megasas_instance));
5102
5103 if (!host) {
5104 printk(KERN_DEBUG "megasas: scsi_host_alloc failed\n");
5105 goto fail_alloc_instance;
5106 }
5107
5108 instance = (struct megasas_instance *)host->hostdata;
5109 memset(instance, 0, sizeof(*instance));
5110 atomic_set( &instance->fw_reset_no_pci_access, 0 );
5111 instance->pdev = pdev;
5112
5113 switch (instance->pdev->device) {
5114 case PCI_DEVICE_ID_LSI_FUSION:
5115 case PCI_DEVICE_ID_LSI_PLASMA:
5116 case PCI_DEVICE_ID_LSI_INVADER:
5117 case PCI_DEVICE_ID_LSI_FURY:
5118 {
5119 instance->ctrl_context_pages =
5120 get_order(sizeof(struct fusion_context));
5121 instance->ctrl_context = (void *)__get_free_pages(GFP_KERNEL,
5122 instance->ctrl_context_pages);
5123 if (!instance->ctrl_context) {
5124 printk(KERN_DEBUG "megasas: Failed to allocate "
5125 "memory for Fusion context info\n");
5126 goto fail_alloc_dma_buf;
5127 }
5128 fusion = instance->ctrl_context;
5129 memset(fusion, 0,
5130 ((1 << PAGE_SHIFT) << instance->ctrl_context_pages));
5131 INIT_LIST_HEAD(&fusion->cmd_pool);
5132 spin_lock_init(&fusion->mpt_pool_lock);
5133 memset(fusion->load_balance_info, 0,
5134 sizeof(struct LD_LOAD_BALANCE_INFO) * MAX_LOGICAL_DRIVES_EXT);
5135 }
5136 break;
5137 default: /* For all other supported controllers */
5138
5139 instance->producer =
5140 pci_alloc_consistent(pdev, sizeof(u32),
5141 &instance->producer_h);
5142 instance->consumer =
5143 pci_alloc_consistent(pdev, sizeof(u32),
5144 &instance->consumer_h);
5145
5146 if (!instance->producer || !instance->consumer) {
5147 printk(KERN_DEBUG "megasas: Failed to allocate"
5148 "memory for producer, consumer\n");
5149 goto fail_alloc_dma_buf;
5150 }
5151
5152 *instance->producer = 0;
5153 *instance->consumer = 0;
5154 break;
5155 }
5156
5157 /* Crash dump feature related initialisation*/
5158 instance->drv_buf_index = 0;
5159 instance->drv_buf_alloc = 0;
5160 instance->crash_dump_fw_support = 0;
5161 instance->crash_dump_app_support = 0;
5162 instance->fw_crash_state = UNAVAILABLE;
5163 spin_lock_init(&instance->crashdump_lock);
5164 instance->crash_dump_buf = NULL;
5165
5166 if (!reset_devices)
5167 instance->crash_dump_buf = pci_alloc_consistent(pdev,
5168 CRASH_DMA_BUF_SIZE,
5169 &instance->crash_dump_h);
5170 if (!instance->crash_dump_buf)
5171 dev_err(&instance->pdev->dev, "Can't allocate Firmware "
5172 "crash dump DMA buffer\n");
5173
5174 megasas_poll_wait_aen = 0;
5175 instance->flag_ieee = 0;
5176 instance->ev = NULL;
5177 instance->issuepend_done = 1;
5178 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
5179 instance->is_imr = 0;
5180
5181 instance->evt_detail = pci_alloc_consistent(pdev,
5182 sizeof(struct
5183 megasas_evt_detail),
5184 &instance->evt_detail_h);
5185
5186 if (!instance->evt_detail) {
5187 printk(KERN_DEBUG "megasas: Failed to allocate memory for "
5188 "event detail structure\n");
5189 goto fail_alloc_dma_buf;
5190 }
5191
5192 /*
5193 * Initialize locks and queues
5194 */
5195 INIT_LIST_HEAD(&instance->cmd_pool);
5196 INIT_LIST_HEAD(&instance->internal_reset_pending_q);
5197
5198 atomic_set(&instance->fw_outstanding,0);
5199
5200 init_waitqueue_head(&instance->int_cmd_wait_q);
5201 init_waitqueue_head(&instance->abort_cmd_wait_q);
5202
5203 spin_lock_init(&instance->mfi_pool_lock);
5204 spin_lock_init(&instance->hba_lock);
5205 spin_lock_init(&instance->completion_lock);
5206
5207 mutex_init(&instance->aen_mutex);
5208 mutex_init(&instance->reset_mutex);
5209
5210 /*
5211 * Initialize PCI related and misc parameters
5212 */
5213 instance->host = host;
5214 instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
5215 instance->init_id = MEGASAS_DEFAULT_INIT_ID;
5216 instance->ctrl_info = NULL;
5217
5218 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
5219 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
5220 instance->flag_ieee = 1;
5221 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
5222 } else
5223 sema_init(&instance->ioctl_sem, (MEGASAS_INT_CMDS - 5));
5224
5225 megasas_dbg_lvl = 0;
5226 instance->flag = 0;
5227 instance->unload = 1;
5228 instance->last_time = 0;
5229 instance->disableOnlineCtrlReset = 1;
5230 instance->UnevenSpanSupport = 0;
5231
5232 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
5233 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) ||
5234 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
5235 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
5236 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
5237 INIT_WORK(&instance->crash_init, megasas_fusion_crash_dump_wq);
5238 } else
5239 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
5240
5241 /*
5242 * Initialize MFI Firmware
5243 */
5244 if (megasas_init_fw(instance))
5245 goto fail_init_mfi;
5246
5247 if (instance->requestorId) {
5248 if (instance->PlasmaFW111) {
5249 instance->vf_affiliation_111 =
5250 pci_alloc_consistent(pdev, sizeof(struct MR_LD_VF_AFFILIATION_111),
5251 &instance->vf_affiliation_111_h);
5252 if (!instance->vf_affiliation_111)
5253 printk(KERN_WARNING "megasas: Can't allocate "
5254 "memory for VF affiliation buffer\n");
5255 } else {
5256 instance->vf_affiliation =
5257 pci_alloc_consistent(pdev,
5258 (MAX_LOGICAL_DRIVES + 1) *
5259 sizeof(struct MR_LD_VF_AFFILIATION),
5260 &instance->vf_affiliation_h);
5261 if (!instance->vf_affiliation)
5262 printk(KERN_WARNING "megasas: Can't allocate "
5263 "memory for VF affiliation buffer\n");
5264 }
5265 }
5266
5267 retry_irq_register:
5268 /*
5269 * Register IRQ
5270 */
5271 if (instance->msix_vectors) {
5272 cpu = cpumask_first(cpu_online_mask);
5273 for (i = 0; i < instance->msix_vectors; i++) {
5274 instance->irq_context[i].instance = instance;
5275 instance->irq_context[i].MSIxIndex = i;
5276 if (request_irq(instance->msixentry[i].vector,
5277 instance->instancet->service_isr, 0,
5278 "megasas",
5279 &instance->irq_context[i])) {
5280 printk(KERN_DEBUG "megasas: Failed to "
5281 "register IRQ for vector %d.\n", i);
5282 for (j = 0; j < i; j++) {
5283 if (smp_affinity_enable)
5284 irq_set_affinity_hint(
5285 instance->msixentry[j].vector, NULL);
5286 free_irq(
5287 instance->msixentry[j].vector,
5288 &instance->irq_context[j]);
5289 }
5290 /* Retry irq register for IO_APIC */
5291 instance->msix_vectors = 0;
5292 goto retry_irq_register;
5293 }
5294 if (smp_affinity_enable) {
5295 if (irq_set_affinity_hint(instance->msixentry[i].vector,
5296 get_cpu_mask(cpu)))
5297 dev_err(&instance->pdev->dev,
5298 "Error setting affinity hint "
5299 "for cpu %d\n", cpu);
5300 cpu = cpumask_next(cpu, cpu_online_mask);
5301 }
5302 }
5303 } else {
5304 instance->irq_context[0].instance = instance;
5305 instance->irq_context[0].MSIxIndex = 0;
5306 if (request_irq(pdev->irq, instance->instancet->service_isr,
5307 IRQF_SHARED, "megasas",
5308 &instance->irq_context[0])) {
5309 printk(KERN_DEBUG "megasas: Failed to register IRQ\n");
5310 goto fail_irq;
5311 }
5312 }
5313
5314 instance->instancet->enable_intr(instance);
5315
5316 /*
5317 * Store instance in PCI softstate
5318 */
5319 pci_set_drvdata(pdev, instance);
5320
5321 /*
5322 * Add this controller to megasas_mgmt_info structure so that it
5323 * can be exported to management applications
5324 */
5325 megasas_mgmt_info.count++;
5326 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
5327 megasas_mgmt_info.max_index++;
5328
5329 /*
5330 * Register with SCSI mid-layer
5331 */
5332 if (megasas_io_attach(instance))
5333 goto fail_io_attach;
5334
5335 instance->unload = 0;
5336 /*
5337 * Trigger SCSI to scan our drives
5338 */
5339 scsi_scan_host(host);
5340
5341 /*
5342 * Initiate AEN (Asynchronous Event Notification)
5343 */
5344 if (megasas_start_aen(instance)) {
5345 printk(KERN_DEBUG "megasas: start aen failed\n");
5346 goto fail_start_aen;
5347 }
5348
5349 /* Get current SR-IOV LD/VF affiliation */
5350 if (instance->requestorId)
5351 megasas_get_ld_vf_affiliation(instance, 1);
5352
5353 return 0;
5354
5355 fail_start_aen:
5356 fail_io_attach:
5357 megasas_mgmt_info.count--;
5358 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
5359 megasas_mgmt_info.max_index--;
5360
5361 instance->instancet->disable_intr(instance);
5362 if (instance->msix_vectors)
5363 for (i = 0; i < instance->msix_vectors; i++) {
5364 if (smp_affinity_enable)
5365 irq_set_affinity_hint(
5366 instance->msixentry[i].vector, NULL);
5367 free_irq(instance->msixentry[i].vector,
5368 &instance->irq_context[i]);
5369 }
5370 else
5371 free_irq(instance->pdev->irq, &instance->irq_context[0]);
5372 fail_irq:
5373 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
5374 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) ||
5375 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
5376 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY))
5377 megasas_release_fusion(instance);
5378 else
5379 megasas_release_mfi(instance);
5380 fail_init_mfi:
5381 if (instance->msix_vectors)
5382 pci_disable_msix(instance->pdev);
5383 fail_alloc_dma_buf:
5384 if (instance->evt_detail)
5385 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
5386 instance->evt_detail,
5387 instance->evt_detail_h);
5388
5389 if (instance->producer)
5390 pci_free_consistent(pdev, sizeof(u32), instance->producer,
5391 instance->producer_h);
5392 if (instance->consumer)
5393 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
5394 instance->consumer_h);
5395 scsi_host_put(host);
5396
5397 fail_alloc_instance:
5398 fail_set_dma_mask:
5399 pci_disable_device(pdev);
5400
5401 return -ENODEV;
5402 }
5403
5404 /**
5405 * megasas_flush_cache - Requests FW to flush all its caches
5406 * @instance: Adapter soft state
5407 */
5408 static void megasas_flush_cache(struct megasas_instance *instance)
5409 {
5410 struct megasas_cmd *cmd;
5411 struct megasas_dcmd_frame *dcmd;
5412
5413 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
5414 return;
5415
5416 cmd = megasas_get_cmd(instance);
5417
5418 if (!cmd)
5419 return;
5420
5421 dcmd = &cmd->frame->dcmd;
5422
5423 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5424
5425 dcmd->cmd = MFI_CMD_DCMD;
5426 dcmd->cmd_status = 0x0;
5427 dcmd->sge_count = 0;
5428 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
5429 dcmd->timeout = 0;
5430 dcmd->pad_0 = 0;
5431 dcmd->data_xfer_len = 0;
5432 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH);
5433 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
5434
5435 if (megasas_issue_blocked_cmd(instance, cmd, 30))
5436 dev_err(&instance->pdev->dev, "Command timedout"
5437 " from %s\n", __func__);
5438
5439 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
5440 megasas_return_mfi_mpt_pthr(instance, cmd,
5441 cmd->mpt_pthr_cmd_blocked);
5442 else
5443 megasas_return_cmd(instance, cmd);
5444
5445 return;
5446 }
5447
5448 /**
5449 * megasas_shutdown_controller - Instructs FW to shutdown the controller
5450 * @instance: Adapter soft state
5451 * @opcode: Shutdown/Hibernate
5452 */
5453 static void megasas_shutdown_controller(struct megasas_instance *instance,
5454 u32 opcode)
5455 {
5456 struct megasas_cmd *cmd;
5457 struct megasas_dcmd_frame *dcmd;
5458
5459 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
5460 return;
5461
5462 cmd = megasas_get_cmd(instance);
5463
5464 if (!cmd)
5465 return;
5466
5467 if (instance->aen_cmd)
5468 megasas_issue_blocked_abort_cmd(instance,
5469 instance->aen_cmd, 30);
5470 if (instance->map_update_cmd)
5471 megasas_issue_blocked_abort_cmd(instance,
5472 instance->map_update_cmd, 30);
5473 dcmd = &cmd->frame->dcmd;
5474
5475 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5476
5477 dcmd->cmd = MFI_CMD_DCMD;
5478 dcmd->cmd_status = 0x0;
5479 dcmd->sge_count = 0;
5480 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
5481 dcmd->timeout = 0;
5482 dcmd->pad_0 = 0;
5483 dcmd->data_xfer_len = 0;
5484 dcmd->opcode = cpu_to_le32(opcode);
5485
5486 if (megasas_issue_blocked_cmd(instance, cmd, 30))
5487 dev_err(&instance->pdev->dev, "Command timedout"
5488 "from %s\n", __func__);
5489
5490 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
5491 megasas_return_mfi_mpt_pthr(instance, cmd,
5492 cmd->mpt_pthr_cmd_blocked);
5493 else
5494 megasas_return_cmd(instance, cmd);
5495
5496 return;
5497 }
5498
5499 #ifdef CONFIG_PM
5500 /**
5501 * megasas_suspend - driver suspend entry point
5502 * @pdev: PCI device structure
5503 * @state: PCI power state to suspend routine
5504 */
5505 static int
5506 megasas_suspend(struct pci_dev *pdev, pm_message_t state)
5507 {
5508 struct Scsi_Host *host;
5509 struct megasas_instance *instance;
5510 int i;
5511
5512 instance = pci_get_drvdata(pdev);
5513 host = instance->host;
5514 instance->unload = 1;
5515
5516 /* Shutdown SR-IOV heartbeat timer */
5517 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
5518 del_timer_sync(&instance->sriov_heartbeat_timer);
5519
5520 megasas_flush_cache(instance);
5521 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
5522
5523 /* cancel the delayed work if this work still in queue */
5524 if (instance->ev != NULL) {
5525 struct megasas_aen_event *ev = instance->ev;
5526 cancel_delayed_work_sync(&ev->hotplug_work);
5527 instance->ev = NULL;
5528 }
5529
5530 tasklet_kill(&instance->isr_tasklet);
5531
5532 pci_set_drvdata(instance->pdev, instance);
5533 instance->instancet->disable_intr(instance);
5534
5535 if (instance->msix_vectors)
5536 for (i = 0; i < instance->msix_vectors; i++) {
5537 if (smp_affinity_enable)
5538 irq_set_affinity_hint(
5539 instance->msixentry[i].vector, NULL);
5540 free_irq(instance->msixentry[i].vector,
5541 &instance->irq_context[i]);
5542 }
5543 else
5544 free_irq(instance->pdev->irq, &instance->irq_context[0]);
5545 if (instance->msix_vectors)
5546 pci_disable_msix(instance->pdev);
5547
5548 pci_save_state(pdev);
5549 pci_disable_device(pdev);
5550
5551 pci_set_power_state(pdev, pci_choose_state(pdev, state));
5552
5553 return 0;
5554 }
5555
5556 /**
5557 * megasas_resume- driver resume entry point
5558 * @pdev: PCI device structure
5559 */
5560 static int
5561 megasas_resume(struct pci_dev *pdev)
5562 {
5563 int rval, i, j, cpu;
5564 struct Scsi_Host *host;
5565 struct megasas_instance *instance;
5566
5567 instance = pci_get_drvdata(pdev);
5568 host = instance->host;
5569 pci_set_power_state(pdev, PCI_D0);
5570 pci_enable_wake(pdev, PCI_D0, 0);
5571 pci_restore_state(pdev);
5572
5573 /*
5574 * PCI prepping: enable device set bus mastering and dma mask
5575 */
5576 rval = pci_enable_device_mem(pdev);
5577
5578 if (rval) {
5579 printk(KERN_ERR "megasas: Enable device failed\n");
5580 return rval;
5581 }
5582
5583 pci_set_master(pdev);
5584
5585 if (megasas_set_dma_mask(pdev))
5586 goto fail_set_dma_mask;
5587
5588 /*
5589 * Initialize MFI Firmware
5590 */
5591
5592 atomic_set(&instance->fw_outstanding, 0);
5593
5594 /*
5595 * We expect the FW state to be READY
5596 */
5597 if (megasas_transition_to_ready(instance, 0))
5598 goto fail_ready_state;
5599
5600 /* Now re-enable MSI-X */
5601 if (instance->msix_vectors &&
5602 pci_enable_msix_exact(instance->pdev, instance->msixentry,
5603 instance->msix_vectors))
5604 goto fail_reenable_msix;
5605
5606 switch (instance->pdev->device) {
5607 case PCI_DEVICE_ID_LSI_FUSION:
5608 case PCI_DEVICE_ID_LSI_PLASMA:
5609 case PCI_DEVICE_ID_LSI_INVADER:
5610 case PCI_DEVICE_ID_LSI_FURY:
5611 {
5612 megasas_reset_reply_desc(instance);
5613 if (megasas_ioc_init_fusion(instance)) {
5614 megasas_free_cmds(instance);
5615 megasas_free_cmds_fusion(instance);
5616 goto fail_init_mfi;
5617 }
5618 if (!megasas_get_map_info(instance))
5619 megasas_sync_map_info(instance);
5620 }
5621 break;
5622 default:
5623 *instance->producer = 0;
5624 *instance->consumer = 0;
5625 if (megasas_issue_init_mfi(instance))
5626 goto fail_init_mfi;
5627 break;
5628 }
5629
5630 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
5631 (unsigned long)instance);
5632
5633 /*
5634 * Register IRQ
5635 */
5636 if (instance->msix_vectors) {
5637 cpu = cpumask_first(cpu_online_mask);
5638 for (i = 0 ; i < instance->msix_vectors; i++) {
5639 instance->irq_context[i].instance = instance;
5640 instance->irq_context[i].MSIxIndex = i;
5641 if (request_irq(instance->msixentry[i].vector,
5642 instance->instancet->service_isr, 0,
5643 "megasas",
5644 &instance->irq_context[i])) {
5645 printk(KERN_DEBUG "megasas: Failed to "
5646 "register IRQ for vector %d.\n", i);
5647 for (j = 0; j < i; j++) {
5648 if (smp_affinity_enable)
5649 irq_set_affinity_hint(
5650 instance->msixentry[j].vector, NULL);
5651 free_irq(
5652 instance->msixentry[j].vector,
5653 &instance->irq_context[j]);
5654 }
5655 goto fail_irq;
5656 }
5657
5658 if (smp_affinity_enable) {
5659 if (irq_set_affinity_hint(instance->msixentry[i].vector,
5660 get_cpu_mask(cpu)))
5661 dev_err(&instance->pdev->dev, "Error "
5662 "setting affinity hint for cpu "
5663 "%d\n", cpu);
5664 cpu = cpumask_next(cpu, cpu_online_mask);
5665 }
5666 }
5667 } else {
5668 instance->irq_context[0].instance = instance;
5669 instance->irq_context[0].MSIxIndex = 0;
5670 if (request_irq(pdev->irq, instance->instancet->service_isr,
5671 IRQF_SHARED, "megasas",
5672 &instance->irq_context[0])) {
5673 printk(KERN_DEBUG "megasas: Failed to register IRQ\n");
5674 goto fail_irq;
5675 }
5676 }
5677
5678 /* Re-launch SR-IOV heartbeat timer */
5679 if (instance->requestorId) {
5680 if (!megasas_sriov_start_heartbeat(instance, 0))
5681 megasas_start_timer(instance,
5682 &instance->sriov_heartbeat_timer,
5683 megasas_sriov_heartbeat_handler,
5684 MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
5685 else
5686 instance->skip_heartbeat_timer_del = 1;
5687 }
5688
5689 instance->instancet->enable_intr(instance);
5690 instance->unload = 0;
5691
5692 /*
5693 * Initiate AEN (Asynchronous Event Notification)
5694 */
5695 if (megasas_start_aen(instance))
5696 printk(KERN_ERR "megasas: Start AEN failed\n");
5697
5698 return 0;
5699
5700 fail_irq:
5701 fail_init_mfi:
5702 if (instance->evt_detail)
5703 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
5704 instance->evt_detail,
5705 instance->evt_detail_h);
5706
5707 if (instance->producer)
5708 pci_free_consistent(pdev, sizeof(u32), instance->producer,
5709 instance->producer_h);
5710 if (instance->consumer)
5711 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
5712 instance->consumer_h);
5713 scsi_host_put(host);
5714
5715 fail_set_dma_mask:
5716 fail_ready_state:
5717 fail_reenable_msix:
5718
5719 pci_disable_device(pdev);
5720
5721 return -ENODEV;
5722 }
5723 #else
5724 #define megasas_suspend NULL
5725 #define megasas_resume NULL
5726 #endif
5727
5728 /**
5729 * megasas_detach_one - PCI hot"un"plug entry point
5730 * @pdev: PCI device structure
5731 */
5732 static void megasas_detach_one(struct pci_dev *pdev)
5733 {
5734 int i;
5735 struct Scsi_Host *host;
5736 struct megasas_instance *instance;
5737 struct fusion_context *fusion;
5738
5739 instance = pci_get_drvdata(pdev);
5740 instance->unload = 1;
5741 host = instance->host;
5742 fusion = instance->ctrl_context;
5743
5744 /* Shutdown SR-IOV heartbeat timer */
5745 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
5746 del_timer_sync(&instance->sriov_heartbeat_timer);
5747
5748 if (instance->fw_crash_state != UNAVAILABLE)
5749 megasas_free_host_crash_buffer(instance);
5750 scsi_remove_host(instance->host);
5751 megasas_flush_cache(instance);
5752 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
5753
5754 /* cancel the delayed work if this work still in queue*/
5755 if (instance->ev != NULL) {
5756 struct megasas_aen_event *ev = instance->ev;
5757 cancel_delayed_work_sync(&ev->hotplug_work);
5758 instance->ev = NULL;
5759 }
5760
5761 /* cancel all wait events */
5762 wake_up_all(&instance->int_cmd_wait_q);
5763
5764 tasklet_kill(&instance->isr_tasklet);
5765
5766 /*
5767 * Take the instance off the instance array. Note that we will not
5768 * decrement the max_index. We let this array be sparse array
5769 */
5770 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
5771 if (megasas_mgmt_info.instance[i] == instance) {
5772 megasas_mgmt_info.count--;
5773 megasas_mgmt_info.instance[i] = NULL;
5774
5775 break;
5776 }
5777 }
5778
5779 instance->instancet->disable_intr(instance);
5780
5781 if (instance->msix_vectors)
5782 for (i = 0; i < instance->msix_vectors; i++) {
5783 if (smp_affinity_enable)
5784 irq_set_affinity_hint(
5785 instance->msixentry[i].vector, NULL);
5786 free_irq(instance->msixentry[i].vector,
5787 &instance->irq_context[i]);
5788 }
5789 else
5790 free_irq(instance->pdev->irq, &instance->irq_context[0]);
5791 if (instance->msix_vectors)
5792 pci_disable_msix(instance->pdev);
5793
5794 switch (instance->pdev->device) {
5795 case PCI_DEVICE_ID_LSI_FUSION:
5796 case PCI_DEVICE_ID_LSI_PLASMA:
5797 case PCI_DEVICE_ID_LSI_INVADER:
5798 case PCI_DEVICE_ID_LSI_FURY:
5799 megasas_release_fusion(instance);
5800 for (i = 0; i < 2 ; i++) {
5801 if (fusion->ld_map[i])
5802 dma_free_coherent(&instance->pdev->dev,
5803 fusion->max_map_sz,
5804 fusion->ld_map[i],
5805 fusion->ld_map_phys[i]);
5806 if (fusion->ld_drv_map[i])
5807 free_pages((ulong)fusion->ld_drv_map[i],
5808 fusion->drv_map_pages);
5809 }
5810 free_pages((ulong)instance->ctrl_context,
5811 instance->ctrl_context_pages);
5812 break;
5813 default:
5814 megasas_release_mfi(instance);
5815 pci_free_consistent(pdev, sizeof(u32),
5816 instance->producer,
5817 instance->producer_h);
5818 pci_free_consistent(pdev, sizeof(u32),
5819 instance->consumer,
5820 instance->consumer_h);
5821 break;
5822 }
5823
5824 kfree(instance->ctrl_info);
5825
5826 if (instance->evt_detail)
5827 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
5828 instance->evt_detail, instance->evt_detail_h);
5829
5830 if (instance->vf_affiliation)
5831 pci_free_consistent(pdev, (MAX_LOGICAL_DRIVES + 1) *
5832 sizeof(struct MR_LD_VF_AFFILIATION),
5833 instance->vf_affiliation,
5834 instance->vf_affiliation_h);
5835
5836 if (instance->vf_affiliation_111)
5837 pci_free_consistent(pdev,
5838 sizeof(struct MR_LD_VF_AFFILIATION_111),
5839 instance->vf_affiliation_111,
5840 instance->vf_affiliation_111_h);
5841
5842 if (instance->hb_host_mem)
5843 pci_free_consistent(pdev, sizeof(struct MR_CTRL_HB_HOST_MEM),
5844 instance->hb_host_mem,
5845 instance->hb_host_mem_h);
5846
5847 if (instance->crash_dump_buf)
5848 pci_free_consistent(pdev, CRASH_DMA_BUF_SIZE,
5849 instance->crash_dump_buf, instance->crash_dump_h);
5850
5851 scsi_host_put(host);
5852
5853 pci_disable_device(pdev);
5854
5855 return;
5856 }
5857
5858 /**
5859 * megasas_shutdown - Shutdown entry point
5860 * @device: Generic device structure
5861 */
5862 static void megasas_shutdown(struct pci_dev *pdev)
5863 {
5864 int i;
5865 struct megasas_instance *instance = pci_get_drvdata(pdev);
5866
5867 instance->unload = 1;
5868 megasas_flush_cache(instance);
5869 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
5870 instance->instancet->disable_intr(instance);
5871 if (instance->msix_vectors)
5872 for (i = 0; i < instance->msix_vectors; i++) {
5873 if (smp_affinity_enable)
5874 irq_set_affinity_hint(
5875 instance->msixentry[i].vector, NULL);
5876 free_irq(instance->msixentry[i].vector,
5877 &instance->irq_context[i]);
5878 }
5879 else
5880 free_irq(instance->pdev->irq, &instance->irq_context[0]);
5881 if (instance->msix_vectors)
5882 pci_disable_msix(instance->pdev);
5883 }
5884
5885 /**
5886 * megasas_mgmt_open - char node "open" entry point
5887 */
5888 static int megasas_mgmt_open(struct inode *inode, struct file *filep)
5889 {
5890 /*
5891 * Allow only those users with admin rights
5892 */
5893 if (!capable(CAP_SYS_ADMIN))
5894 return -EACCES;
5895
5896 return 0;
5897 }
5898
5899 /**
5900 * megasas_mgmt_fasync - Async notifier registration from applications
5901 *
5902 * This function adds the calling process to a driver global queue. When an
5903 * event occurs, SIGIO will be sent to all processes in this queue.
5904 */
5905 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
5906 {
5907 int rc;
5908
5909 mutex_lock(&megasas_async_queue_mutex);
5910
5911 rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
5912
5913 mutex_unlock(&megasas_async_queue_mutex);
5914
5915 if (rc >= 0) {
5916 /* For sanity check when we get ioctl */
5917 filep->private_data = filep;
5918 return 0;
5919 }
5920
5921 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
5922
5923 return rc;
5924 }
5925
5926 /**
5927 * megasas_mgmt_poll - char node "poll" entry point
5928 * */
5929 static unsigned int megasas_mgmt_poll(struct file *file, poll_table *wait)
5930 {
5931 unsigned int mask;
5932 unsigned long flags;
5933 poll_wait(file, &megasas_poll_wait, wait);
5934 spin_lock_irqsave(&poll_aen_lock, flags);
5935 if (megasas_poll_wait_aen)
5936 mask = (POLLIN | POLLRDNORM);
5937
5938 else
5939 mask = 0;
5940 megasas_poll_wait_aen = 0;
5941 spin_unlock_irqrestore(&poll_aen_lock, flags);
5942 return mask;
5943 }
5944
5945 /*
5946 * megasas_set_crash_dump_params_ioctl:
5947 * Send CRASH_DUMP_MODE DCMD to all controllers
5948 * @cmd: MFI command frame
5949 */
5950
5951 static int megasas_set_crash_dump_params_ioctl(
5952 struct megasas_cmd *cmd)
5953 {
5954 struct megasas_instance *local_instance;
5955 int i, error = 0;
5956 int crash_support;
5957
5958 crash_support = cmd->frame->dcmd.mbox.w[0];
5959
5960 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
5961 local_instance = megasas_mgmt_info.instance[i];
5962 if (local_instance && local_instance->crash_dump_drv_support) {
5963 if ((local_instance->adprecovery ==
5964 MEGASAS_HBA_OPERATIONAL) &&
5965 !megasas_set_crash_dump_params(local_instance,
5966 crash_support)) {
5967 local_instance->crash_dump_app_support =
5968 crash_support;
5969 dev_info(&local_instance->pdev->dev,
5970 "Application firmware crash "
5971 "dump mode set success\n");
5972 error = 0;
5973 } else {
5974 dev_info(&local_instance->pdev->dev,
5975 "Application firmware crash "
5976 "dump mode set failed\n");
5977 error = -1;
5978 }
5979 }
5980 }
5981 return error;
5982 }
5983
5984 /**
5985 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW
5986 * @instance: Adapter soft state
5987 * @argp: User's ioctl packet
5988 */
5989 static int
5990 megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
5991 struct megasas_iocpacket __user * user_ioc,
5992 struct megasas_iocpacket *ioc)
5993 {
5994 struct megasas_sge32 *kern_sge32;
5995 struct megasas_cmd *cmd;
5996 void *kbuff_arr[MAX_IOCTL_SGE];
5997 dma_addr_t buf_handle = 0;
5998 int error = 0, i;
5999 void *sense = NULL;
6000 dma_addr_t sense_handle;
6001 unsigned long *sense_ptr;
6002
6003 memset(kbuff_arr, 0, sizeof(kbuff_arr));
6004
6005 if (ioc->sge_count > MAX_IOCTL_SGE) {
6006 printk(KERN_DEBUG "megasas: SGE count [%d] > max limit [%d]\n",
6007 ioc->sge_count, MAX_IOCTL_SGE);
6008 return -EINVAL;
6009 }
6010
6011 cmd = megasas_get_cmd(instance);
6012 if (!cmd) {
6013 printk(KERN_DEBUG "megasas: Failed to get a cmd packet\n");
6014 return -ENOMEM;
6015 }
6016
6017 /*
6018 * User's IOCTL packet has 2 frames (maximum). Copy those two
6019 * frames into our cmd's frames. cmd->frame's context will get
6020 * overwritten when we copy from user's frames. So set that value
6021 * alone separately
6022 */
6023 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
6024 cmd->frame->hdr.context = cpu_to_le32(cmd->index);
6025 cmd->frame->hdr.pad_0 = 0;
6026 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_IEEE |
6027 MFI_FRAME_SGL64 |
6028 MFI_FRAME_SENSE64));
6029
6030 if (cmd->frame->dcmd.opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) {
6031 error = megasas_set_crash_dump_params_ioctl(cmd);
6032 megasas_return_cmd(instance, cmd);
6033 return error;
6034 }
6035
6036 /*
6037 * The management interface between applications and the fw uses
6038 * MFI frames. E.g, RAID configuration changes, LD property changes
6039 * etc are accomplishes through different kinds of MFI frames. The
6040 * driver needs to care only about substituting user buffers with
6041 * kernel buffers in SGLs. The location of SGL is embedded in the
6042 * struct iocpacket itself.
6043 */
6044 kern_sge32 = (struct megasas_sge32 *)
6045 ((unsigned long)cmd->frame + ioc->sgl_off);
6046
6047 /*
6048 * For each user buffer, create a mirror buffer and copy in
6049 */
6050 for (i = 0; i < ioc->sge_count; i++) {
6051 if (!ioc->sgl[i].iov_len)
6052 continue;
6053
6054 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
6055 ioc->sgl[i].iov_len,
6056 &buf_handle, GFP_KERNEL);
6057 if (!kbuff_arr[i]) {
6058 printk(KERN_DEBUG "megasas: Failed to alloc "
6059 "kernel SGL buffer for IOCTL \n");
6060 error = -ENOMEM;
6061 goto out;
6062 }
6063
6064 /*
6065 * We don't change the dma_coherent_mask, so
6066 * pci_alloc_consistent only returns 32bit addresses
6067 */
6068 kern_sge32[i].phys_addr = cpu_to_le32(buf_handle);
6069 kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
6070
6071 /*
6072 * We created a kernel buffer corresponding to the
6073 * user buffer. Now copy in from the user buffer
6074 */
6075 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
6076 (u32) (ioc->sgl[i].iov_len))) {
6077 error = -EFAULT;
6078 goto out;
6079 }
6080 }
6081
6082 if (ioc->sense_len) {
6083 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
6084 &sense_handle, GFP_KERNEL);
6085 if (!sense) {
6086 error = -ENOMEM;
6087 goto out;
6088 }
6089
6090 sense_ptr =
6091 (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off);
6092 *sense_ptr = cpu_to_le32(sense_handle);
6093 }
6094
6095 /*
6096 * Set the sync_cmd flag so that the ISR knows not to complete this
6097 * cmd to the SCSI mid-layer
6098 */
6099 cmd->sync_cmd = 1;
6100 megasas_issue_blocked_cmd(instance, cmd, 0);
6101 cmd->sync_cmd = 0;
6102
6103 if (instance->unload == 1) {
6104 dev_info(&instance->pdev->dev, "Driver unload is in progress "
6105 "don't submit data to application\n");
6106 goto out;
6107 }
6108 /*
6109 * copy out the kernel buffers to user buffers
6110 */
6111 for (i = 0; i < ioc->sge_count; i++) {
6112 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
6113 ioc->sgl[i].iov_len)) {
6114 error = -EFAULT;
6115 goto out;
6116 }
6117 }
6118
6119 /*
6120 * copy out the sense
6121 */
6122 if (ioc->sense_len) {
6123 /*
6124 * sense_ptr points to the location that has the user
6125 * sense buffer address
6126 */
6127 sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw +
6128 ioc->sense_off);
6129
6130 if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)),
6131 sense, ioc->sense_len)) {
6132 printk(KERN_ERR "megasas: Failed to copy out to user "
6133 "sense data\n");
6134 error = -EFAULT;
6135 goto out;
6136 }
6137 }
6138
6139 /*
6140 * copy the status codes returned by the fw
6141 */
6142 if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
6143 &cmd->frame->hdr.cmd_status, sizeof(u8))) {
6144 printk(KERN_DEBUG "megasas: Error copying out cmd_status\n");
6145 error = -EFAULT;
6146 }
6147
6148 out:
6149 if (sense) {
6150 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
6151 sense, sense_handle);
6152 }
6153
6154 for (i = 0; i < ioc->sge_count; i++) {
6155 if (kbuff_arr[i])
6156 dma_free_coherent(&instance->pdev->dev,
6157 le32_to_cpu(kern_sge32[i].length),
6158 kbuff_arr[i],
6159 le32_to_cpu(kern_sge32[i].phys_addr));
6160 kbuff_arr[i] = NULL;
6161 }
6162
6163 if (instance->ctrl_context && cmd->mpt_pthr_cmd_blocked)
6164 megasas_return_mfi_mpt_pthr(instance, cmd,
6165 cmd->mpt_pthr_cmd_blocked);
6166 else
6167 megasas_return_cmd(instance, cmd);
6168 return error;
6169 }
6170
6171 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
6172 {
6173 struct megasas_iocpacket __user *user_ioc =
6174 (struct megasas_iocpacket __user *)arg;
6175 struct megasas_iocpacket *ioc;
6176 struct megasas_instance *instance;
6177 int error;
6178 int i;
6179 unsigned long flags;
6180 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
6181
6182 ioc = kmalloc(sizeof(*ioc), GFP_KERNEL);
6183 if (!ioc)
6184 return -ENOMEM;
6185
6186 if (copy_from_user(ioc, user_ioc, sizeof(*ioc))) {
6187 error = -EFAULT;
6188 goto out_kfree_ioc;
6189 }
6190
6191 instance = megasas_lookup_instance(ioc->host_no);
6192 if (!instance) {
6193 error = -ENODEV;
6194 goto out_kfree_ioc;
6195 }
6196
6197 /* Adjust ioctl wait time for VF mode */
6198 if (instance->requestorId)
6199 wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF;
6200
6201 /* Block ioctls in VF mode */
6202 if (instance->requestorId && !allow_vf_ioctls) {
6203 error = -ENODEV;
6204 goto out_kfree_ioc;
6205 }
6206
6207 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
6208 printk(KERN_ERR "Controller in crit error\n");
6209 error = -ENODEV;
6210 goto out_kfree_ioc;
6211 }
6212
6213 if (instance->unload == 1) {
6214 error = -ENODEV;
6215 goto out_kfree_ioc;
6216 }
6217
6218 /*
6219 * We will allow only MEGASAS_INT_CMDS number of parallel ioctl cmds
6220 */
6221 if (down_interruptible(&instance->ioctl_sem)) {
6222 error = -ERESTARTSYS;
6223 goto out_kfree_ioc;
6224 }
6225
6226 for (i = 0; i < wait_time; i++) {
6227
6228 spin_lock_irqsave(&instance->hba_lock, flags);
6229 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
6230 spin_unlock_irqrestore(&instance->hba_lock, flags);
6231 break;
6232 }
6233 spin_unlock_irqrestore(&instance->hba_lock, flags);
6234
6235 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
6236 printk(KERN_NOTICE "megasas: waiting"
6237 "for controller reset to finish\n");
6238 }
6239
6240 msleep(1000);
6241 }
6242
6243 spin_lock_irqsave(&instance->hba_lock, flags);
6244 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
6245 spin_unlock_irqrestore(&instance->hba_lock, flags);
6246
6247 printk(KERN_ERR "megaraid_sas: timed out while"
6248 "waiting for HBA to recover\n");
6249 error = -ENODEV;
6250 goto out_up;
6251 }
6252 spin_unlock_irqrestore(&instance->hba_lock, flags);
6253
6254 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
6255 out_up:
6256 up(&instance->ioctl_sem);
6257
6258 out_kfree_ioc:
6259 kfree(ioc);
6260 return error;
6261 }
6262
6263 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
6264 {
6265 struct megasas_instance *instance;
6266 struct megasas_aen aen;
6267 int error;
6268 int i;
6269 unsigned long flags;
6270 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
6271
6272 if (file->private_data != file) {
6273 printk(KERN_DEBUG "megasas: fasync_helper was not "
6274 "called first\n");
6275 return -EINVAL;
6276 }
6277
6278 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
6279 return -EFAULT;
6280
6281 instance = megasas_lookup_instance(aen.host_no);
6282
6283 if (!instance)
6284 return -ENODEV;
6285
6286 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
6287 return -ENODEV;
6288 }
6289
6290 if (instance->unload == 1) {
6291 return -ENODEV;
6292 }
6293
6294 for (i = 0; i < wait_time; i++) {
6295
6296 spin_lock_irqsave(&instance->hba_lock, flags);
6297 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
6298 spin_unlock_irqrestore(&instance->hba_lock,
6299 flags);
6300 break;
6301 }
6302
6303 spin_unlock_irqrestore(&instance->hba_lock, flags);
6304
6305 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
6306 printk(KERN_NOTICE "megasas: waiting for"
6307 "controller reset to finish\n");
6308 }
6309
6310 msleep(1000);
6311 }
6312
6313 spin_lock_irqsave(&instance->hba_lock, flags);
6314 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
6315 spin_unlock_irqrestore(&instance->hba_lock, flags);
6316 printk(KERN_ERR "megaraid_sas: timed out while waiting"
6317 "for HBA to recover.\n");
6318 return -ENODEV;
6319 }
6320 spin_unlock_irqrestore(&instance->hba_lock, flags);
6321
6322 mutex_lock(&instance->aen_mutex);
6323 error = megasas_register_aen(instance, aen.seq_num,
6324 aen.class_locale_word);
6325 mutex_unlock(&instance->aen_mutex);
6326 return error;
6327 }
6328
6329 /**
6330 * megasas_mgmt_ioctl - char node ioctl entry point
6331 */
6332 static long
6333 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
6334 {
6335 switch (cmd) {
6336 case MEGASAS_IOC_FIRMWARE:
6337 return megasas_mgmt_ioctl_fw(file, arg);
6338
6339 case MEGASAS_IOC_GET_AEN:
6340 return megasas_mgmt_ioctl_aen(file, arg);
6341 }
6342
6343 return -ENOTTY;
6344 }
6345
6346 #ifdef CONFIG_COMPAT
6347 static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg)
6348 {
6349 struct compat_megasas_iocpacket __user *cioc =
6350 (struct compat_megasas_iocpacket __user *)arg;
6351 struct megasas_iocpacket __user *ioc =
6352 compat_alloc_user_space(sizeof(struct megasas_iocpacket));
6353 int i;
6354 int error = 0;
6355 compat_uptr_t ptr;
6356
6357 if (clear_user(ioc, sizeof(*ioc)))
6358 return -EFAULT;
6359
6360 if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) ||
6361 copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) ||
6362 copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) ||
6363 copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) ||
6364 copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) ||
6365 copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32)))
6366 return -EFAULT;
6367
6368 /*
6369 * The sense_ptr is used in megasas_mgmt_fw_ioctl only when
6370 * sense_len is not null, so prepare the 64bit value under
6371 * the same condition.
6372 */
6373 if (ioc->sense_len) {
6374 void __user **sense_ioc_ptr =
6375 (void __user **)(ioc->frame.raw + ioc->sense_off);
6376 compat_uptr_t *sense_cioc_ptr =
6377 (compat_uptr_t *)(cioc->frame.raw + cioc->sense_off);
6378 if (get_user(ptr, sense_cioc_ptr) ||
6379 put_user(compat_ptr(ptr), sense_ioc_ptr))
6380 return -EFAULT;
6381 }
6382
6383 for (i = 0; i < MAX_IOCTL_SGE; i++) {
6384 if (get_user(ptr, &cioc->sgl[i].iov_base) ||
6385 put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) ||
6386 copy_in_user(&ioc->sgl[i].iov_len,
6387 &cioc->sgl[i].iov_len, sizeof(compat_size_t)))
6388 return -EFAULT;
6389 }
6390
6391 error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc);
6392
6393 if (copy_in_user(&cioc->frame.hdr.cmd_status,
6394 &ioc->frame.hdr.cmd_status, sizeof(u8))) {
6395 printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n");
6396 return -EFAULT;
6397 }
6398 return error;
6399 }
6400
6401 static long
6402 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
6403 unsigned long arg)
6404 {
6405 switch (cmd) {
6406 case MEGASAS_IOC_FIRMWARE32:
6407 return megasas_mgmt_compat_ioctl_fw(file, arg);
6408 case MEGASAS_IOC_GET_AEN:
6409 return megasas_mgmt_ioctl_aen(file, arg);
6410 }
6411
6412 return -ENOTTY;
6413 }
6414 #endif
6415
6416 /*
6417 * File operations structure for management interface
6418 */
6419 static const struct file_operations megasas_mgmt_fops = {
6420 .owner = THIS_MODULE,
6421 .open = megasas_mgmt_open,
6422 .fasync = megasas_mgmt_fasync,
6423 .unlocked_ioctl = megasas_mgmt_ioctl,
6424 .poll = megasas_mgmt_poll,
6425 #ifdef CONFIG_COMPAT
6426 .compat_ioctl = megasas_mgmt_compat_ioctl,
6427 #endif
6428 .llseek = noop_llseek,
6429 };
6430
6431 /*
6432 * PCI hotplug support registration structure
6433 */
6434 static struct pci_driver megasas_pci_driver = {
6435
6436 .name = "megaraid_sas",
6437 .id_table = megasas_pci_table,
6438 .probe = megasas_probe_one,
6439 .remove = megasas_detach_one,
6440 .suspend = megasas_suspend,
6441 .resume = megasas_resume,
6442 .shutdown = megasas_shutdown,
6443 };
6444
6445 /*
6446 * Sysfs driver attributes
6447 */
6448 static ssize_t megasas_sysfs_show_version(struct device_driver *dd, char *buf)
6449 {
6450 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
6451 MEGASAS_VERSION);
6452 }
6453
6454 static DRIVER_ATTR(version, S_IRUGO, megasas_sysfs_show_version, NULL);
6455
6456 static ssize_t
6457 megasas_sysfs_show_support_poll_for_event(struct device_driver *dd, char *buf)
6458 {
6459 return sprintf(buf, "%u\n", support_poll_for_event);
6460 }
6461
6462 static DRIVER_ATTR(support_poll_for_event, S_IRUGO,
6463 megasas_sysfs_show_support_poll_for_event, NULL);
6464
6465 static ssize_t
6466 megasas_sysfs_show_support_device_change(struct device_driver *dd, char *buf)
6467 {
6468 return sprintf(buf, "%u\n", support_device_change);
6469 }
6470
6471 static DRIVER_ATTR(support_device_change, S_IRUGO,
6472 megasas_sysfs_show_support_device_change, NULL);
6473
6474 static ssize_t
6475 megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf)
6476 {
6477 return sprintf(buf, "%u\n", megasas_dbg_lvl);
6478 }
6479
6480 static ssize_t
6481 megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count)
6482 {
6483 int retval = count;
6484 if(sscanf(buf,"%u",&megasas_dbg_lvl)<1){
6485 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
6486 retval = -EINVAL;
6487 }
6488 return retval;
6489 }
6490
6491 static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUSR, megasas_sysfs_show_dbg_lvl,
6492 megasas_sysfs_set_dbg_lvl);
6493
6494 static void
6495 megasas_aen_polling(struct work_struct *work)
6496 {
6497 struct megasas_aen_event *ev =
6498 container_of(work, struct megasas_aen_event, hotplug_work.work);
6499 struct megasas_instance *instance = ev->instance;
6500 union megasas_evt_class_locale class_locale;
6501 struct Scsi_Host *host;
6502 struct scsi_device *sdev1;
6503 u16 pd_index = 0;
6504 u16 ld_index = 0;
6505 int i, j, doscan = 0;
6506 u32 seq_num, wait_time = MEGASAS_RESET_WAIT_TIME;
6507 int error;
6508
6509 if (!instance) {
6510 printk(KERN_ERR "invalid instance!\n");
6511 kfree(ev);
6512 return;
6513 }
6514
6515 /* Adjust event workqueue thread wait time for VF mode */
6516 if (instance->requestorId)
6517 wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF;
6518
6519 /* Don't run the event workqueue thread if OCR is running */
6520 for (i = 0; i < wait_time; i++) {
6521 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL)
6522 break;
6523 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
6524 printk(KERN_NOTICE "megasas: %s waiting for "
6525 "controller reset to finish for scsi%d\n",
6526 __func__, instance->host->host_no);
6527 }
6528 msleep(1000);
6529 }
6530
6531 instance->ev = NULL;
6532 host = instance->host;
6533 if (instance->evt_detail) {
6534
6535 switch (le32_to_cpu(instance->evt_detail->code)) {
6536 case MR_EVT_PD_INSERTED:
6537 if (megasas_get_pd_list(instance) == 0) {
6538 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
6539 for (j = 0;
6540 j < MEGASAS_MAX_DEV_PER_CHANNEL;
6541 j++) {
6542
6543 pd_index =
6544 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
6545
6546 sdev1 =
6547 scsi_device_lookup(host, i, j, 0);
6548
6549 if (instance->pd_list[pd_index].driveState
6550 == MR_PD_STATE_SYSTEM) {
6551 if (!sdev1) {
6552 scsi_add_device(host, i, j, 0);
6553 }
6554
6555 if (sdev1)
6556 scsi_device_put(sdev1);
6557 }
6558 }
6559 }
6560 }
6561 doscan = 0;
6562 break;
6563
6564 case MR_EVT_PD_REMOVED:
6565 if (megasas_get_pd_list(instance) == 0) {
6566 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
6567 for (j = 0;
6568 j < MEGASAS_MAX_DEV_PER_CHANNEL;
6569 j++) {
6570
6571 pd_index =
6572 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
6573
6574 sdev1 =
6575 scsi_device_lookup(host, i, j, 0);
6576
6577 if (instance->pd_list[pd_index].driveState
6578 == MR_PD_STATE_SYSTEM) {
6579 if (sdev1) {
6580 scsi_device_put(sdev1);
6581 }
6582 } else {
6583 if (sdev1) {
6584 scsi_remove_device(sdev1);
6585 scsi_device_put(sdev1);
6586 }
6587 }
6588 }
6589 }
6590 }
6591 doscan = 0;
6592 break;
6593
6594 case MR_EVT_LD_OFFLINE:
6595 case MR_EVT_CFG_CLEARED:
6596 case MR_EVT_LD_DELETED:
6597 if (!instance->requestorId ||
6598 (instance->requestorId &&
6599 megasas_get_ld_vf_affiliation(instance, 0))) {
6600 if (megasas_ld_list_query(instance,
6601 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
6602 megasas_get_ld_list(instance);
6603 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
6604 for (j = 0;
6605 j < MEGASAS_MAX_DEV_PER_CHANNEL;
6606 j++) {
6607
6608 ld_index =
6609 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
6610
6611 sdev1 = scsi_device_lookup(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
6612
6613 if (instance->ld_ids[ld_index]
6614 != 0xff) {
6615 if (sdev1)
6616 scsi_device_put(sdev1);
6617 } else {
6618 if (sdev1) {
6619 scsi_remove_device(sdev1);
6620 scsi_device_put(sdev1);
6621 }
6622 }
6623 }
6624 }
6625 doscan = 0;
6626 }
6627 break;
6628 case MR_EVT_LD_CREATED:
6629 if (!instance->requestorId ||
6630 (instance->requestorId &&
6631 megasas_get_ld_vf_affiliation(instance, 0))) {
6632 if (megasas_ld_list_query(instance,
6633 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
6634 megasas_get_ld_list(instance);
6635 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
6636 for (j = 0;
6637 j < MEGASAS_MAX_DEV_PER_CHANNEL;
6638 j++) {
6639 ld_index =
6640 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
6641
6642 sdev1 = scsi_device_lookup(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
6643
6644 if (instance->ld_ids[ld_index]
6645 != 0xff) {
6646 if (!sdev1)
6647 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
6648 }
6649 if (sdev1)
6650 scsi_device_put(sdev1);
6651 }
6652 }
6653 doscan = 0;
6654 }
6655 break;
6656 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
6657 case MR_EVT_FOREIGN_CFG_IMPORTED:
6658 case MR_EVT_LD_STATE_CHANGE:
6659 doscan = 1;
6660 break;
6661 default:
6662 doscan = 0;
6663 break;
6664 }
6665 } else {
6666 printk(KERN_ERR "invalid evt_detail!\n");
6667 kfree(ev);
6668 return;
6669 }
6670
6671 if (doscan) {
6672 printk(KERN_INFO "megaraid_sas: scanning for scsi%d...\n",
6673 instance->host->host_no);
6674 if (megasas_get_pd_list(instance) == 0) {
6675 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
6676 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
6677 pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j;
6678 sdev1 = scsi_device_lookup(host, i, j, 0);
6679 if (instance->pd_list[pd_index].driveState ==
6680 MR_PD_STATE_SYSTEM) {
6681 if (!sdev1) {
6682 scsi_add_device(host, i, j, 0);
6683 }
6684 if (sdev1)
6685 scsi_device_put(sdev1);
6686 } else {
6687 if (sdev1) {
6688 scsi_remove_device(sdev1);
6689 scsi_device_put(sdev1);
6690 }
6691 }
6692 }
6693 }
6694 }
6695
6696 if (!instance->requestorId ||
6697 (instance->requestorId &&
6698 megasas_get_ld_vf_affiliation(instance, 0))) {
6699 if (megasas_ld_list_query(instance,
6700 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
6701 megasas_get_ld_list(instance);
6702 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
6703 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL;
6704 j++) {
6705 ld_index =
6706 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
6707
6708 sdev1 = scsi_device_lookup(host,
6709 MEGASAS_MAX_PD_CHANNELS + i, j, 0);
6710 if (instance->ld_ids[ld_index]
6711 != 0xff) {
6712 if (!sdev1)
6713 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
6714 else
6715 scsi_device_put(sdev1);
6716 } else {
6717 if (sdev1) {
6718 scsi_remove_device(sdev1);
6719 scsi_device_put(sdev1);
6720 }
6721 }
6722 }
6723 }
6724 }
6725 }
6726
6727 if ( instance->aen_cmd != NULL ) {
6728 kfree(ev);
6729 return ;
6730 }
6731
6732 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1;
6733
6734 /* Register AEN with FW for latest sequence number plus 1 */
6735 class_locale.members.reserved = 0;
6736 class_locale.members.locale = MR_EVT_LOCALE_ALL;
6737 class_locale.members.class = MR_EVT_CLASS_DEBUG;
6738 mutex_lock(&instance->aen_mutex);
6739 error = megasas_register_aen(instance, seq_num,
6740 class_locale.word);
6741 mutex_unlock(&instance->aen_mutex);
6742
6743 if (error)
6744 printk(KERN_ERR "register aen failed error %x\n", error);
6745
6746 kfree(ev);
6747 }
6748
6749 /**
6750 * megasas_init - Driver load entry point
6751 */
6752 static int __init megasas_init(void)
6753 {
6754 int rval;
6755
6756 /*
6757 * Announce driver version and other information
6758 */
6759 pr_info("megasas: %s\n", MEGASAS_VERSION);
6760
6761 spin_lock_init(&poll_aen_lock);
6762
6763 support_poll_for_event = 2;
6764 support_device_change = 1;
6765
6766 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
6767
6768 /*
6769 * Register character device node
6770 */
6771 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
6772
6773 if (rval < 0) {
6774 printk(KERN_DEBUG "megasas: failed to open device node\n");
6775 return rval;
6776 }
6777
6778 megasas_mgmt_majorno = rval;
6779
6780 /*
6781 * Register ourselves as PCI hotplug module
6782 */
6783 rval = pci_register_driver(&megasas_pci_driver);
6784
6785 if (rval) {
6786 printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n");
6787 goto err_pcidrv;
6788 }
6789
6790 rval = driver_create_file(&megasas_pci_driver.driver,
6791 &driver_attr_version);
6792 if (rval)
6793 goto err_dcf_attr_ver;
6794
6795 rval = driver_create_file(&megasas_pci_driver.driver,
6796 &driver_attr_support_poll_for_event);
6797 if (rval)
6798 goto err_dcf_support_poll_for_event;
6799
6800 rval = driver_create_file(&megasas_pci_driver.driver,
6801 &driver_attr_dbg_lvl);
6802 if (rval)
6803 goto err_dcf_dbg_lvl;
6804 rval = driver_create_file(&megasas_pci_driver.driver,
6805 &driver_attr_support_device_change);
6806 if (rval)
6807 goto err_dcf_support_device_change;
6808
6809 return rval;
6810
6811 err_dcf_support_device_change:
6812 driver_remove_file(&megasas_pci_driver.driver,
6813 &driver_attr_dbg_lvl);
6814 err_dcf_dbg_lvl:
6815 driver_remove_file(&megasas_pci_driver.driver,
6816 &driver_attr_support_poll_for_event);
6817 err_dcf_support_poll_for_event:
6818 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
6819 err_dcf_attr_ver:
6820 pci_unregister_driver(&megasas_pci_driver);
6821 err_pcidrv:
6822 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
6823 return rval;
6824 }
6825
6826 /**
6827 * megasas_exit - Driver unload entry point
6828 */
6829 static void __exit megasas_exit(void)
6830 {
6831 driver_remove_file(&megasas_pci_driver.driver,
6832 &driver_attr_dbg_lvl);
6833 driver_remove_file(&megasas_pci_driver.driver,
6834 &driver_attr_support_poll_for_event);
6835 driver_remove_file(&megasas_pci_driver.driver,
6836 &driver_attr_support_device_change);
6837 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
6838
6839 pci_unregister_driver(&megasas_pci_driver);
6840 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
6841 }
6842
6843 module_init(megasas_init);
6844 module_exit(megasas_exit);
Linux kernel - Deliverables
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