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ARM: rockchip: fix broken build
[linux/fpc-iii.git] / drivers / scsi / megaraid / megaraid_sas_base.c
blob71b884dae27c7e1413c0aa300b9ce1e30a556d83
1 /*
2 * Linux MegaRAID driver for SAS based RAID controllers
3 *
4 * Copyright (c) 2003-2013 LSI Corporation
5 * Copyright (c) 2013-2014 Avago Technologies
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version 2
10 * of the License, or (at your option) any later version.
11 *
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
16 *
17 * You should have received a copy of the GNU General Public License
18 * along with this program. If not, see <http://www.gnu.org/licenses/>.
19 *
20 * Authors: Avago Technologies
21 * Sreenivas Bagalkote
22 * Sumant Patro
23 * Bo Yang
24 * Adam Radford
25 * Kashyap Desai <kashyap.desai@avagotech.com>
26 * Sumit Saxena <sumit.saxena@avagotech.com>
27 *
28 * Send feedback to: megaraidlinux.pdl@avagotech.com
29 *
30 * Mail to: Avago Technologies, 350 West Trimble Road, Building 90,
31 * San Jose, California 95131
32 */
33
34 #include <linux/kernel.h>
35 #include <linux/types.h>
36 #include <linux/pci.h>
37 #include <linux/list.h>
38 #include <linux/moduleparam.h>
39 #include <linux/module.h>
40 #include <linux/spinlock.h>
41 #include <linux/interrupt.h>
42 #include <linux/delay.h>
43 #include <linux/uio.h>
44 #include <linux/slab.h>
45 #include <asm/uaccess.h>
46 #include <linux/fs.h>
47 #include <linux/compat.h>
48 #include <linux/blkdev.h>
49 #include <linux/mutex.h>
50 #include <linux/poll.h>
51
52 #include <scsi/scsi.h>
53 #include <scsi/scsi_cmnd.h>
54 #include <scsi/scsi_device.h>
55 #include <scsi/scsi_host.h>
56 #include <scsi/scsi_tcq.h>
57 #include "megaraid_sas_fusion.h"
58 #include "megaraid_sas.h"
59
60 /*
61 * Number of sectors per IO command
62 * Will be set in megasas_init_mfi if user does not provide
63 */
64 static unsigned int max_sectors;
65 module_param_named(max_sectors, max_sectors, int, 0);
66 MODULE_PARM_DESC(max_sectors,
67 "Maximum number of sectors per IO command");
68
69 static int msix_disable;
70 module_param(msix_disable, int, S_IRUGO);
71 MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0");
72
73 static unsigned int msix_vectors;
74 module_param(msix_vectors, int, S_IRUGO);
75 MODULE_PARM_DESC(msix_vectors, "MSI-X max vector count. Default: Set by FW");
76
77 static int allow_vf_ioctls;
78 module_param(allow_vf_ioctls, int, S_IRUGO);
79 MODULE_PARM_DESC(allow_vf_ioctls, "Allow ioctls in SR-IOV VF mode. Default: 0");
80
81 static unsigned int throttlequeuedepth = MEGASAS_THROTTLE_QUEUE_DEPTH;
82 module_param(throttlequeuedepth, int, S_IRUGO);
83 MODULE_PARM_DESC(throttlequeuedepth,
84 "Adapter queue depth when throttled due to I/O timeout. Default: 16");
85
86 int resetwaittime = MEGASAS_RESET_WAIT_TIME;
87 module_param(resetwaittime, int, S_IRUGO);
88 MODULE_PARM_DESC(resetwaittime, "Wait time in seconds after I/O timeout "
89 "before resetting adapter. Default: 180");
90
91 int smp_affinity_enable = 1;
92 module_param(smp_affinity_enable, int, S_IRUGO);
93 MODULE_PARM_DESC(smp_affinity_enable, "SMP affinity feature enable/disbale Default: enable(1)");
94
95 MODULE_LICENSE("GPL");
96 MODULE_VERSION(MEGASAS_VERSION);
97 MODULE_AUTHOR("megaraidlinux.pdl@avagotech.com");
98 MODULE_DESCRIPTION("Avago MegaRAID SAS Driver");
99
100 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
101 static int megasas_get_pd_list(struct megasas_instance *instance);
102 static int megasas_ld_list_query(struct megasas_instance *instance,
103 u8 query_type);
104 static int megasas_issue_init_mfi(struct megasas_instance *instance);
105 static int megasas_register_aen(struct megasas_instance *instance,
106 u32 seq_num, u32 class_locale_word);
107 /*
108 * PCI ID table for all supported controllers
109 */
110 static struct pci_device_id megasas_pci_table[] = {
111
112 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
113 /* xscale IOP */
114 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
115 /* ppc IOP */
116 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
117 /* ppc IOP */
118 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
119 /* gen2*/
120 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
121 /* gen2*/
122 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
123 /* skinny*/
124 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
125 /* skinny*/
126 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
127 /* xscale IOP, vega */
128 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
129 /* xscale IOP */
130 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)},
131 /* Fusion */
132 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_PLASMA)},
133 /* Plasma */
134 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)},
135 /* Invader */
136 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FURY)},
137 /* Fury */
138 {}
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 } else {
219 printk(KERN_ERR "megasas: Command pool empty!\n");
220 }
221
222 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
223 return cmd;
224 }
225
226 /**
227 * megasas_return_cmd - Return a cmd to free command pool
228 * @instance: Adapter soft state
229 * @cmd: Command packet to be returned to free command pool
230 */
231 inline void
232 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
233 {
234 unsigned long flags;
235 u32 blk_tags;
236 struct megasas_cmd_fusion *cmd_fusion;
237 struct fusion_context *fusion = instance->ctrl_context;
238
239 /* This flag is used only for fusion adapter.
240 * Wait for Interrupt for Polled mode DCMD
241 */
242 if (cmd->flags & DRV_DCMD_POLLED_MODE)
243 return;
244
245 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
246
247 if (fusion) {
248 blk_tags = instance->max_scsi_cmds + cmd->index;
249 cmd_fusion = fusion->cmd_list[blk_tags];
250 megasas_return_cmd_fusion(instance, cmd_fusion);
251 }
252 cmd->scmd = NULL;
253 cmd->frame_count = 0;
254 cmd->flags = 0;
255 if (!fusion && reset_devices)
256 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
257 list_add(&cmd->list, (&instance->cmd_pool)->next);
258
259 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
260
261 }
262
263 /**
264 * The following functions are defined for xscale
265 * (deviceid : 1064R, PERC5) controllers
266 */
267
268 /**
269 * megasas_enable_intr_xscale - Enables interrupts
270 * @regs: MFI register set
271 */
272 static inline void
273 megasas_enable_intr_xscale(struct megasas_instance *instance)
274 {
275 struct megasas_register_set __iomem *regs;
276 regs = instance->reg_set;
277 writel(0, &(regs)->outbound_intr_mask);
278
279 /* Dummy readl to force pci flush */
280 readl(&regs->outbound_intr_mask);
281 }
282
283 /**
284 * megasas_disable_intr_xscale -Disables interrupt
285 * @regs: MFI register set
286 */
287 static inline void
288 megasas_disable_intr_xscale(struct megasas_instance *instance)
289 {
290 struct megasas_register_set __iomem *regs;
291 u32 mask = 0x1f;
292 regs = instance->reg_set;
293 writel(mask, &regs->outbound_intr_mask);
294 /* Dummy readl to force pci flush */
295 readl(&regs->outbound_intr_mask);
296 }
297
298 /**
299 * megasas_read_fw_status_reg_xscale - returns the current FW status value
300 * @regs: MFI register set
301 */
302 static u32
303 megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs)
304 {
305 return readl(&(regs)->outbound_msg_0);
306 }
307 /**
308 * megasas_clear_interrupt_xscale - Check & clear interrupt
309 * @regs: MFI register set
310 */
311 static int
312 megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs)
313 {
314 u32 status;
315 u32 mfiStatus = 0;
316 /*
317 * Check if it is our interrupt
318 */
319 status = readl(&regs->outbound_intr_status);
320
321 if (status & MFI_OB_INTR_STATUS_MASK)
322 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
323 if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
324 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
325
326 /*
327 * Clear the interrupt by writing back the same value
328 */
329 if (mfiStatus)
330 writel(status, &regs->outbound_intr_status);
331
332 /* Dummy readl to force pci flush */
333 readl(&regs->outbound_intr_status);
334
335 return mfiStatus;
336 }
337
338 /**
339 * megasas_fire_cmd_xscale - Sends command to the FW
340 * @frame_phys_addr : Physical address of cmd
341 * @frame_count : Number of frames for the command
342 * @regs : MFI register set
343 */
344 static inline void
345 megasas_fire_cmd_xscale(struct megasas_instance *instance,
346 dma_addr_t frame_phys_addr,
347 u32 frame_count,
348 struct megasas_register_set __iomem *regs)
349 {
350 unsigned long flags;
351 spin_lock_irqsave(&instance->hba_lock, flags);
352 writel((frame_phys_addr >> 3)|(frame_count),
353 &(regs)->inbound_queue_port);
354 spin_unlock_irqrestore(&instance->hba_lock, flags);
355 }
356
357 /**
358 * megasas_adp_reset_xscale - For controller reset
359 * @regs: MFI register set
360 */
361 static int
362 megasas_adp_reset_xscale(struct megasas_instance *instance,
363 struct megasas_register_set __iomem *regs)
364 {
365 u32 i;
366 u32 pcidata;
367 writel(MFI_ADP_RESET, &regs->inbound_doorbell);
368
369 for (i = 0; i < 3; i++)
370 msleep(1000); /* sleep for 3 secs */
371 pcidata = 0;
372 pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
373 printk(KERN_NOTICE "pcidata = %x\n", pcidata);
374 if (pcidata & 0x2) {
375 printk(KERN_NOTICE "mfi 1068 offset read=%x\n", pcidata);
376 pcidata &= ~0x2;
377 pci_write_config_dword(instance->pdev,
378 MFI_1068_PCSR_OFFSET, pcidata);
379
380 for (i = 0; i < 2; i++)
381 msleep(1000); /* need to wait 2 secs again */
382
383 pcidata = 0;
384 pci_read_config_dword(instance->pdev,
385 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
386 printk(KERN_NOTICE "1068 offset handshake read=%x\n", pcidata);
387 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
388 printk(KERN_NOTICE "1068 offset pcidt=%x\n", pcidata);
389 pcidata = 0;
390 pci_write_config_dword(instance->pdev,
391 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
392 }
393 }
394 return 0;
395 }
396
397 /**
398 * megasas_check_reset_xscale - For controller reset check
399 * @regs: MFI register set
400 */
401 static int
402 megasas_check_reset_xscale(struct megasas_instance *instance,
403 struct megasas_register_set __iomem *regs)
404 {
405
406 if ((instance->adprecovery != MEGASAS_HBA_OPERATIONAL) &&
407 (le32_to_cpu(*instance->consumer) ==
408 MEGASAS_ADPRESET_INPROG_SIGN))
409 return 1;
410 return 0;
411 }
412
413 static struct megasas_instance_template megasas_instance_template_xscale = {
414
415 .fire_cmd = megasas_fire_cmd_xscale,
416 .enable_intr = megasas_enable_intr_xscale,
417 .disable_intr = megasas_disable_intr_xscale,
418 .clear_intr = megasas_clear_intr_xscale,
419 .read_fw_status_reg = megasas_read_fw_status_reg_xscale,
420 .adp_reset = megasas_adp_reset_xscale,
421 .check_reset = megasas_check_reset_xscale,
422 .service_isr = megasas_isr,
423 .tasklet = megasas_complete_cmd_dpc,
424 .init_adapter = megasas_init_adapter_mfi,
425 .build_and_issue_cmd = megasas_build_and_issue_cmd,
426 .issue_dcmd = megasas_issue_dcmd,
427 };
428
429 /**
430 * This is the end of set of functions & definitions specific
431 * to xscale (deviceid : 1064R, PERC5) controllers
432 */
433
434 /**
435 * The following functions are defined for ppc (deviceid : 0x60)
436 * controllers
437 */
438
439 /**
440 * megasas_enable_intr_ppc - Enables interrupts
441 * @regs: MFI register set
442 */
443 static inline void
444 megasas_enable_intr_ppc(struct megasas_instance *instance)
445 {
446 struct megasas_register_set __iomem *regs;
447 regs = instance->reg_set;
448 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
449
450 writel(~0x80000000, &(regs)->outbound_intr_mask);
451
452 /* Dummy readl to force pci flush */
453 readl(&regs->outbound_intr_mask);
454 }
455
456 /**
457 * megasas_disable_intr_ppc - Disable interrupt
458 * @regs: MFI register set
459 */
460 static inline void
461 megasas_disable_intr_ppc(struct megasas_instance *instance)
462 {
463 struct megasas_register_set __iomem *regs;
464 u32 mask = 0xFFFFFFFF;
465 regs = instance->reg_set;
466 writel(mask, &regs->outbound_intr_mask);
467 /* Dummy readl to force pci flush */
468 readl(&regs->outbound_intr_mask);
469 }
470
471 /**
472 * megasas_read_fw_status_reg_ppc - returns the current FW status value
473 * @regs: MFI register set
474 */
475 static u32
476 megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs)
477 {
478 return readl(&(regs)->outbound_scratch_pad);
479 }
480
481 /**
482 * megasas_clear_interrupt_ppc - Check & clear interrupt
483 * @regs: MFI register set
484 */
485 static int
486 megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs)
487 {
488 u32 status, mfiStatus = 0;
489
490 /*
491 * Check if it is our interrupt
492 */
493 status = readl(&regs->outbound_intr_status);
494
495 if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT)
496 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
497
498 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT)
499 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
500
501 /*
502 * Clear the interrupt by writing back the same value
503 */
504 writel(status, &regs->outbound_doorbell_clear);
505
506 /* Dummy readl to force pci flush */
507 readl(&regs->outbound_doorbell_clear);
508
509 return mfiStatus;
510 }
511
512 /**
513 * megasas_fire_cmd_ppc - Sends command to the FW
514 * @frame_phys_addr : Physical address of cmd
515 * @frame_count : Number of frames for the command
516 * @regs : MFI register set
517 */
518 static inline void
519 megasas_fire_cmd_ppc(struct megasas_instance *instance,
520 dma_addr_t frame_phys_addr,
521 u32 frame_count,
522 struct megasas_register_set __iomem *regs)
523 {
524 unsigned long flags;
525 spin_lock_irqsave(&instance->hba_lock, flags);
526 writel((frame_phys_addr | (frame_count<<1))|1,
527 &(regs)->inbound_queue_port);
528 spin_unlock_irqrestore(&instance->hba_lock, flags);
529 }
530
531 /**
532 * megasas_check_reset_ppc - For controller reset check
533 * @regs: MFI register set
534 */
535 static int
536 megasas_check_reset_ppc(struct megasas_instance *instance,
537 struct megasas_register_set __iomem *regs)
538 {
539 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL)
540 return 1;
541
542 return 0;
543 }
544
545 static struct megasas_instance_template megasas_instance_template_ppc = {
546
547 .fire_cmd = megasas_fire_cmd_ppc,
548 .enable_intr = megasas_enable_intr_ppc,
549 .disable_intr = megasas_disable_intr_ppc,
550 .clear_intr = megasas_clear_intr_ppc,
551 .read_fw_status_reg = megasas_read_fw_status_reg_ppc,
552 .adp_reset = megasas_adp_reset_xscale,
553 .check_reset = megasas_check_reset_ppc,
554 .service_isr = megasas_isr,
555 .tasklet = megasas_complete_cmd_dpc,
556 .init_adapter = megasas_init_adapter_mfi,
557 .build_and_issue_cmd = megasas_build_and_issue_cmd,
558 .issue_dcmd = megasas_issue_dcmd,
559 };
560
561 /**
562 * megasas_enable_intr_skinny - Enables interrupts
563 * @regs: MFI register set
564 */
565 static inline void
566 megasas_enable_intr_skinny(struct megasas_instance *instance)
567 {
568 struct megasas_register_set __iomem *regs;
569 regs = instance->reg_set;
570 writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
571
572 writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
573
574 /* Dummy readl to force pci flush */
575 readl(&regs->outbound_intr_mask);
576 }
577
578 /**
579 * megasas_disable_intr_skinny - Disables interrupt
580 * @regs: MFI register set
581 */
582 static inline void
583 megasas_disable_intr_skinny(struct megasas_instance *instance)
584 {
585 struct megasas_register_set __iomem *regs;
586 u32 mask = 0xFFFFFFFF;
587 regs = instance->reg_set;
588 writel(mask, &regs->outbound_intr_mask);
589 /* Dummy readl to force pci flush */
590 readl(&regs->outbound_intr_mask);
591 }
592
593 /**
594 * megasas_read_fw_status_reg_skinny - returns the current FW status value
595 * @regs: MFI register set
596 */
597 static u32
598 megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem *regs)
599 {
600 return readl(&(regs)->outbound_scratch_pad);
601 }
602
603 /**
604 * megasas_clear_interrupt_skinny - Check & clear interrupt
605 * @regs: MFI register set
606 */
607 static int
608 megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs)
609 {
610 u32 status;
611 u32 mfiStatus = 0;
612
613 /*
614 * Check if it is our interrupt
615 */
616 status = readl(&regs->outbound_intr_status);
617
618 if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
619 return 0;
620 }
621
622 /*
623 * Check if it is our interrupt
624 */
625 if ((megasas_read_fw_status_reg_skinny(regs) & MFI_STATE_MASK) ==
626 MFI_STATE_FAULT) {
627 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
628 } else
629 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
630
631 /*
632 * Clear the interrupt by writing back the same value
633 */
634 writel(status, &regs->outbound_intr_status);
635
636 /*
637 * dummy read to flush PCI
638 */
639 readl(&regs->outbound_intr_status);
640
641 return mfiStatus;
642 }
643
644 /**
645 * megasas_fire_cmd_skinny - Sends command to the FW
646 * @frame_phys_addr : Physical address of cmd
647 * @frame_count : Number of frames for the command
648 * @regs : MFI register set
649 */
650 static inline void
651 megasas_fire_cmd_skinny(struct megasas_instance *instance,
652 dma_addr_t frame_phys_addr,
653 u32 frame_count,
654 struct megasas_register_set __iomem *regs)
655 {
656 unsigned long flags;
657 spin_lock_irqsave(&instance->hba_lock, flags);
658 writel(upper_32_bits(frame_phys_addr),
659 &(regs)->inbound_high_queue_port);
660 writel((lower_32_bits(frame_phys_addr) | (frame_count<<1))|1,
661 &(regs)->inbound_low_queue_port);
662 spin_unlock_irqrestore(&instance->hba_lock, flags);
663 }
664
665 /**
666 * megasas_check_reset_skinny - For controller reset check
667 * @regs: MFI register set
668 */
669 static int
670 megasas_check_reset_skinny(struct megasas_instance *instance,
671 struct megasas_register_set __iomem *regs)
672 {
673 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL)
674 return 1;
675
676 return 0;
677 }
678
679 static struct megasas_instance_template megasas_instance_template_skinny = {
680
681 .fire_cmd = megasas_fire_cmd_skinny,
682 .enable_intr = megasas_enable_intr_skinny,
683 .disable_intr = megasas_disable_intr_skinny,
684 .clear_intr = megasas_clear_intr_skinny,
685 .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
686 .adp_reset = megasas_adp_reset_gen2,
687 .check_reset = megasas_check_reset_skinny,
688 .service_isr = megasas_isr,
689 .tasklet = megasas_complete_cmd_dpc,
690 .init_adapter = megasas_init_adapter_mfi,
691 .build_and_issue_cmd = megasas_build_and_issue_cmd,
692 .issue_dcmd = megasas_issue_dcmd,
693 };
694
695
696 /**
697 * The following functions are defined for gen2 (deviceid : 0x78 0x79)
698 * controllers
699 */
700
701 /**
702 * megasas_enable_intr_gen2 - Enables interrupts
703 * @regs: MFI register set
704 */
705 static inline void
706 megasas_enable_intr_gen2(struct megasas_instance *instance)
707 {
708 struct megasas_register_set __iomem *regs;
709 regs = instance->reg_set;
710 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
711
712 /* write ~0x00000005 (4 & 1) to the intr mask*/
713 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
714
715 /* Dummy readl to force pci flush */
716 readl(&regs->outbound_intr_mask);
717 }
718
719 /**
720 * megasas_disable_intr_gen2 - Disables interrupt
721 * @regs: MFI register set
722 */
723 static inline void
724 megasas_disable_intr_gen2(struct megasas_instance *instance)
725 {
726 struct megasas_register_set __iomem *regs;
727 u32 mask = 0xFFFFFFFF;
728 regs = instance->reg_set;
729 writel(mask, &regs->outbound_intr_mask);
730 /* Dummy readl to force pci flush */
731 readl(&regs->outbound_intr_mask);
732 }
733
734 /**
735 * megasas_read_fw_status_reg_gen2 - returns the current FW status value
736 * @regs: MFI register set
737 */
738 static u32
739 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs)
740 {
741 return readl(&(regs)->outbound_scratch_pad);
742 }
743
744 /**
745 * megasas_clear_interrupt_gen2 - Check & clear interrupt
746 * @regs: MFI register set
747 */
748 static int
749 megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs)
750 {
751 u32 status;
752 u32 mfiStatus = 0;
753 /*
754 * Check if it is our interrupt
755 */
756 status = readl(&regs->outbound_intr_status);
757
758 if (status & MFI_INTR_FLAG_REPLY_MESSAGE) {
759 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
760 }
761 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
762 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
763 }
764
765 /*
766 * Clear the interrupt by writing back the same value
767 */
768 if (mfiStatus)
769 writel(status, &regs->outbound_doorbell_clear);
770
771 /* Dummy readl to force pci flush */
772 readl(&regs->outbound_intr_status);
773
774 return mfiStatus;
775 }
776 /**
777 * megasas_fire_cmd_gen2 - Sends command to the FW
778 * @frame_phys_addr : Physical address of cmd
779 * @frame_count : Number of frames for the command
780 * @regs : MFI register set
781 */
782 static inline void
783 megasas_fire_cmd_gen2(struct megasas_instance *instance,
784 dma_addr_t frame_phys_addr,
785 u32 frame_count,
786 struct megasas_register_set __iomem *regs)
787 {
788 unsigned long flags;
789 spin_lock_irqsave(&instance->hba_lock, flags);
790 writel((frame_phys_addr | (frame_count<<1))|1,
791 &(regs)->inbound_queue_port);
792 spin_unlock_irqrestore(&instance->hba_lock, flags);
793 }
794
795 /**
796 * megasas_adp_reset_gen2 - For controller reset
797 * @regs: MFI register set
798 */
799 static int
800 megasas_adp_reset_gen2(struct megasas_instance *instance,
801 struct megasas_register_set __iomem *reg_set)
802 {
803 u32 retry = 0 ;
804 u32 HostDiag;
805 u32 __iomem *seq_offset = &reg_set->seq_offset;
806 u32 __iomem *hostdiag_offset = &reg_set->host_diag;
807
808 if (instance->instancet == &megasas_instance_template_skinny) {
809 seq_offset = &reg_set->fusion_seq_offset;
810 hostdiag_offset = &reg_set->fusion_host_diag;
811 }
812
813 writel(0, seq_offset);
814 writel(4, seq_offset);
815 writel(0xb, seq_offset);
816 writel(2, seq_offset);
817 writel(7, seq_offset);
818 writel(0xd, seq_offset);
819
820 msleep(1000);
821
822 HostDiag = (u32)readl(hostdiag_offset);
823
824 while ( !( HostDiag & DIAG_WRITE_ENABLE) ) {
825 msleep(100);
826 HostDiag = (u32)readl(hostdiag_offset);
827 printk(KERN_NOTICE "RESETGEN2: retry=%x, hostdiag=%x\n",
828 retry, HostDiag);
829
830 if (retry++ >= 100)
831 return 1;
832
833 }
834
835 printk(KERN_NOTICE "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
836
837 writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset);
838
839 ssleep(10);
840
841 HostDiag = (u32)readl(hostdiag_offset);
842 while ( ( HostDiag & DIAG_RESET_ADAPTER) ) {
843 msleep(100);
844 HostDiag = (u32)readl(hostdiag_offset);
845 printk(KERN_NOTICE "RESET_GEN2: retry=%x, hostdiag=%x\n",
846 retry, HostDiag);
847
848 if (retry++ >= 1000)
849 return 1;
850
851 }
852 return 0;
853 }
854
855 /**
856 * megasas_check_reset_gen2 - For controller reset check
857 * @regs: MFI register set
858 */
859 static int
860 megasas_check_reset_gen2(struct megasas_instance *instance,
861 struct megasas_register_set __iomem *regs)
862 {
863 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
864 return 1;
865 }
866
867 return 0;
868 }
869
870 static struct megasas_instance_template megasas_instance_template_gen2 = {
871
872 .fire_cmd = megasas_fire_cmd_gen2,
873 .enable_intr = megasas_enable_intr_gen2,
874 .disable_intr = megasas_disable_intr_gen2,
875 .clear_intr = megasas_clear_intr_gen2,
876 .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
877 .adp_reset = megasas_adp_reset_gen2,
878 .check_reset = megasas_check_reset_gen2,
879 .service_isr = megasas_isr,
880 .tasklet = megasas_complete_cmd_dpc,
881 .init_adapter = megasas_init_adapter_mfi,
882 .build_and_issue_cmd = megasas_build_and_issue_cmd,
883 .issue_dcmd = megasas_issue_dcmd,
884 };
885
886 /**
887 * This is the end of set of functions & definitions
888 * specific to gen2 (deviceid : 0x78, 0x79) controllers
889 */
890
891 /*
892 * Template added for TB (Fusion)
893 */
894 extern struct megasas_instance_template megasas_instance_template_fusion;
895
896 /**
897 * megasas_issue_polled - Issues a polling command
898 * @instance: Adapter soft state
899 * @cmd: Command packet to be issued
900 *
901 * For polling, MFI requires the cmd_status to be set to MFI_STAT_INVALID_STATUS before posting.
902 */
903 int
904 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
905 {
906 int seconds;
907
908 struct megasas_header *frame_hdr = &cmd->frame->hdr;
909
910 frame_hdr->cmd_status = MFI_CMD_STATUS_POLL_MODE;
911 frame_hdr->flags |= cpu_to_le16(MFI_FRAME_DONT_POST_IN_REPLY_QUEUE);
912
913 /*
914 * Issue the frame using inbound queue port
915 */
916 instance->instancet->issue_dcmd(instance, cmd);
917
918 /*
919 * Wait for cmd_status to change
920 */
921 if (instance->requestorId)
922 seconds = MEGASAS_ROUTINE_WAIT_TIME_VF;
923 else
924 seconds = MFI_POLL_TIMEOUT_SECS;
925 return wait_and_poll(instance, cmd, seconds);
926 }
927
928 /**
929 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds
930 * @instance: Adapter soft state
931 * @cmd: Command to be issued
932 * @timeout: Timeout in seconds
933 *
934 * This function waits on an event for the command to be returned from ISR.
935 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
936 * Used to issue ioctl commands.
937 */
938 int
939 megasas_issue_blocked_cmd(struct megasas_instance *instance,
940 struct megasas_cmd *cmd, int timeout)
941 {
942 int ret = 0;
943 cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
944
945 instance->instancet->issue_dcmd(instance, cmd);
946 if (timeout) {
947 ret = wait_event_timeout(instance->int_cmd_wait_q,
948 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS, timeout * HZ);
949 if (!ret)
950 return 1;
951 } else
952 wait_event(instance->int_cmd_wait_q,
953 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS);
954
955 return (cmd->cmd_status_drv == MFI_STAT_OK) ?
956 0 : 1;
957 }
958
959 /**
960 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd
961 * @instance: Adapter soft state
962 * @cmd_to_abort: Previously issued cmd to be aborted
963 * @timeout: Timeout in seconds
964 *
965 * MFI firmware can abort previously issued AEN comamnd (automatic event
966 * notification). The megasas_issue_blocked_abort_cmd() issues such abort
967 * cmd and waits for return status.
968 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
969 */
970 static int
971 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
972 struct megasas_cmd *cmd_to_abort, int timeout)
973 {
974 struct megasas_cmd *cmd;
975 struct megasas_abort_frame *abort_fr;
976 int ret = 0;
977
978 cmd = megasas_get_cmd(instance);
979
980 if (!cmd)
981 return -1;
982
983 abort_fr = &cmd->frame->abort;
984
985 /*
986 * Prepare and issue the abort frame
987 */
988 abort_fr->cmd = MFI_CMD_ABORT;
989 abort_fr->cmd_status = MFI_STAT_INVALID_STATUS;
990 abort_fr->flags = cpu_to_le16(0);
991 abort_fr->abort_context = cpu_to_le32(cmd_to_abort->index);
992 abort_fr->abort_mfi_phys_addr_lo =
993 cpu_to_le32(lower_32_bits(cmd_to_abort->frame_phys_addr));
994 abort_fr->abort_mfi_phys_addr_hi =
995 cpu_to_le32(upper_32_bits(cmd_to_abort->frame_phys_addr));
996
997 cmd->sync_cmd = 1;
998 cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
999
1000 instance->instancet->issue_dcmd(instance, cmd);
1001
1002 if (timeout) {
1003 ret = wait_event_timeout(instance->abort_cmd_wait_q,
1004 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS, timeout * HZ);
1005 if (!ret) {
1006 dev_err(&instance->pdev->dev, "Command timedout"
1007 "from %s\n", __func__);
1008 return 1;
1009 }
1010 } else
1011 wait_event(instance->abort_cmd_wait_q,
1012 cmd->cmd_status_drv != MFI_STAT_INVALID_STATUS);
1013
1014 cmd->sync_cmd = 0;
1015
1016 megasas_return_cmd(instance, cmd);
1017 return 0;
1018 }
1019
1020 /**
1021 * megasas_make_sgl32 - Prepares 32-bit SGL
1022 * @instance: Adapter soft state
1023 * @scp: SCSI command from the mid-layer
1024 * @mfi_sgl: SGL to be filled in
1025 *
1026 * If successful, this function returns the number of SG elements. Otherwise,
1027 * it returnes -1.
1028 */
1029 static int
1030 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
1031 union megasas_sgl *mfi_sgl)
1032 {
1033 int i;
1034 int sge_count;
1035 struct scatterlist *os_sgl;
1036
1037 sge_count = scsi_dma_map(scp);
1038 BUG_ON(sge_count < 0);
1039
1040 if (sge_count) {
1041 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1042 mfi_sgl->sge32[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1043 mfi_sgl->sge32[i].phys_addr = cpu_to_le32(sg_dma_address(os_sgl));
1044 }
1045 }
1046 return sge_count;
1047 }
1048
1049 /**
1050 * megasas_make_sgl64 - Prepares 64-bit SGL
1051 * @instance: Adapter soft state
1052 * @scp: SCSI command from the mid-layer
1053 * @mfi_sgl: SGL to be filled in
1054 *
1055 * If successful, this function returns the number of SG elements. Otherwise,
1056 * it returnes -1.
1057 */
1058 static int
1059 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
1060 union megasas_sgl *mfi_sgl)
1061 {
1062 int i;
1063 int sge_count;
1064 struct scatterlist *os_sgl;
1065
1066 sge_count = scsi_dma_map(scp);
1067 BUG_ON(sge_count < 0);
1068
1069 if (sge_count) {
1070 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1071 mfi_sgl->sge64[i].length = cpu_to_le32(sg_dma_len(os_sgl));
1072 mfi_sgl->sge64[i].phys_addr = cpu_to_le64(sg_dma_address(os_sgl));
1073 }
1074 }
1075 return sge_count;
1076 }
1077
1078 /**
1079 * megasas_make_sgl_skinny - Prepares IEEE SGL
1080 * @instance: Adapter soft state
1081 * @scp: SCSI command from the mid-layer
1082 * @mfi_sgl: SGL to be filled in
1083 *
1084 * If successful, this function returns the number of SG elements. Otherwise,
1085 * it returnes -1.
1086 */
1087 static int
1088 megasas_make_sgl_skinny(struct megasas_instance *instance,
1089 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
1090 {
1091 int i;
1092 int sge_count;
1093 struct scatterlist *os_sgl;
1094
1095 sge_count = scsi_dma_map(scp);
1096
1097 if (sge_count) {
1098 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1099 mfi_sgl->sge_skinny[i].length =
1100 cpu_to_le32(sg_dma_len(os_sgl));
1101 mfi_sgl->sge_skinny[i].phys_addr =
1102 cpu_to_le64(sg_dma_address(os_sgl));
1103 mfi_sgl->sge_skinny[i].flag = cpu_to_le32(0);
1104 }
1105 }
1106 return sge_count;
1107 }
1108
1109 /**
1110 * megasas_get_frame_count - Computes the number of frames
1111 * @frame_type : type of frame- io or pthru frame
1112 * @sge_count : number of sg elements
1113 *
1114 * Returns the number of frames required for numnber of sge's (sge_count)
1115 */
1116
1117 static u32 megasas_get_frame_count(struct megasas_instance *instance,
1118 u8 sge_count, u8 frame_type)
1119 {
1120 int num_cnt;
1121 int sge_bytes;
1122 u32 sge_sz;
1123 u32 frame_count=0;
1124
1125 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
1126 sizeof(struct megasas_sge32);
1127
1128 if (instance->flag_ieee) {
1129 sge_sz = sizeof(struct megasas_sge_skinny);
1130 }
1131
1132 /*
1133 * Main frame can contain 2 SGEs for 64-bit SGLs and
1134 * 3 SGEs for 32-bit SGLs for ldio &
1135 * 1 SGEs for 64-bit SGLs and
1136 * 2 SGEs for 32-bit SGLs for pthru frame
1137 */
1138 if (unlikely(frame_type == PTHRU_FRAME)) {
1139 if (instance->flag_ieee == 1) {
1140 num_cnt = sge_count - 1;
1141 } else if (IS_DMA64)
1142 num_cnt = sge_count - 1;
1143 else
1144 num_cnt = sge_count - 2;
1145 } else {
1146 if (instance->flag_ieee == 1) {
1147 num_cnt = sge_count - 1;
1148 } else if (IS_DMA64)
1149 num_cnt = sge_count - 2;
1150 else
1151 num_cnt = sge_count - 3;
1152 }
1153
1154 if(num_cnt>0){
1155 sge_bytes = sge_sz * num_cnt;
1156
1157 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
1158 ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
1159 }
1160 /* Main frame */
1161 frame_count +=1;
1162
1163 if (frame_count > 7)
1164 frame_count = 8;
1165 return frame_count;
1166 }
1167
1168 /**
1169 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
1170 * @instance: Adapter soft state
1171 * @scp: SCSI command
1172 * @cmd: Command to be prepared in
1173 *
1174 * This function prepares CDB commands. These are typcially pass-through
1175 * commands to the devices.
1176 */
1177 static int
1178 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
1179 struct megasas_cmd *cmd)
1180 {
1181 u32 is_logical;
1182 u32 device_id;
1183 u16 flags = 0;
1184 struct megasas_pthru_frame *pthru;
1185
1186 is_logical = MEGASAS_IS_LOGICAL(scp);
1187 device_id = MEGASAS_DEV_INDEX(scp);
1188 pthru = (struct megasas_pthru_frame *)cmd->frame;
1189
1190 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1191 flags = MFI_FRAME_DIR_WRITE;
1192 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1193 flags = MFI_FRAME_DIR_READ;
1194 else if (scp->sc_data_direction == PCI_DMA_NONE)
1195 flags = MFI_FRAME_DIR_NONE;
1196
1197 if (instance->flag_ieee == 1) {
1198 flags |= MFI_FRAME_IEEE;
1199 }
1200
1201 /*
1202 * Prepare the DCDB frame
1203 */
1204 pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
1205 pthru->cmd_status = 0x0;
1206 pthru->scsi_status = 0x0;
1207 pthru->target_id = device_id;
1208 pthru->lun = scp->device->lun;
1209 pthru->cdb_len = scp->cmd_len;
1210 pthru->timeout = 0;
1211 pthru->pad_0 = 0;
1212 pthru->flags = cpu_to_le16(flags);
1213 pthru->data_xfer_len = cpu_to_le32(scsi_bufflen(scp));
1214
1215 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1216
1217 /*
1218 * If the command is for the tape device, set the
1219 * pthru timeout to the os layer timeout value.
1220 */
1221 if (scp->device->type == TYPE_TAPE) {
1222 if ((scp->request->timeout / HZ) > 0xFFFF)
1223 pthru->timeout = cpu_to_le16(0xFFFF);
1224 else
1225 pthru->timeout = cpu_to_le16(scp->request->timeout / HZ);
1226 }
1227
1228 /*
1229 * Construct SGL
1230 */
1231 if (instance->flag_ieee == 1) {
1232 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1233 pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
1234 &pthru->sgl);
1235 } else if (IS_DMA64) {
1236 pthru->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1237 pthru->sge_count = megasas_make_sgl64(instance, scp,
1238 &pthru->sgl);
1239 } else
1240 pthru->sge_count = megasas_make_sgl32(instance, scp,
1241 &pthru->sgl);
1242
1243 if (pthru->sge_count > instance->max_num_sge) {
1244 printk(KERN_ERR "megasas: DCDB two many SGE NUM=%x\n",
1245 pthru->sge_count);
1246 return 0;
1247 }
1248
1249 /*
1250 * Sense info specific
1251 */
1252 pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
1253 pthru->sense_buf_phys_addr_hi =
1254 cpu_to_le32(upper_32_bits(cmd->sense_phys_addr));
1255 pthru->sense_buf_phys_addr_lo =
1256 cpu_to_le32(lower_32_bits(cmd->sense_phys_addr));
1257
1258 /*
1259 * Compute the total number of frames this command consumes. FW uses
1260 * this number to pull sufficient number of frames from host memory.
1261 */
1262 cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
1263 PTHRU_FRAME);
1264
1265 return cmd->frame_count;
1266 }
1267
1268 /**
1269 * megasas_build_ldio - Prepares IOs to logical devices
1270 * @instance: Adapter soft state
1271 * @scp: SCSI command
1272 * @cmd: Command to be prepared
1273 *
1274 * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1275 */
1276 static int
1277 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1278 struct megasas_cmd *cmd)
1279 {
1280 u32 device_id;
1281 u8 sc = scp->cmnd[0];
1282 u16 flags = 0;
1283 struct megasas_io_frame *ldio;
1284
1285 device_id = MEGASAS_DEV_INDEX(scp);
1286 ldio = (struct megasas_io_frame *)cmd->frame;
1287
1288 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1289 flags = MFI_FRAME_DIR_WRITE;
1290 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1291 flags = MFI_FRAME_DIR_READ;
1292
1293 if (instance->flag_ieee == 1) {
1294 flags |= MFI_FRAME_IEEE;
1295 }
1296
1297 /*
1298 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
1299 */
1300 ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
1301 ldio->cmd_status = 0x0;
1302 ldio->scsi_status = 0x0;
1303 ldio->target_id = device_id;
1304 ldio->timeout = 0;
1305 ldio->reserved_0 = 0;
1306 ldio->pad_0 = 0;
1307 ldio->flags = cpu_to_le16(flags);
1308 ldio->start_lba_hi = 0;
1309 ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
1310
1311 /*
1312 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1313 */
1314 if (scp->cmd_len == 6) {
1315 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[4]);
1316 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[1] << 16) |
1317 ((u32) scp->cmnd[2] << 8) |
1318 (u32) scp->cmnd[3]);
1319
1320 ldio->start_lba_lo &= cpu_to_le32(0x1FFFFF);
1321 }
1322
1323 /*
1324 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1325 */
1326 else if (scp->cmd_len == 10) {
1327 ldio->lba_count = cpu_to_le32((u32) scp->cmnd[8] |
1328 ((u32) scp->cmnd[7] << 8));
1329 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1330 ((u32) scp->cmnd[3] << 16) |
1331 ((u32) scp->cmnd[4] << 8) |
1332 (u32) scp->cmnd[5]);
1333 }
1334
1335 /*
1336 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1337 */
1338 else if (scp->cmd_len == 12) {
1339 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1340 ((u32) scp->cmnd[7] << 16) |
1341 ((u32) scp->cmnd[8] << 8) |
1342 (u32) scp->cmnd[9]);
1343
1344 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1345 ((u32) scp->cmnd[3] << 16) |
1346 ((u32) scp->cmnd[4] << 8) |
1347 (u32) scp->cmnd[5]);
1348 }
1349
1350 /*
1351 * 16-byte READ(0x88) or WRITE(0x8A) cdb
1352 */
1353 else if (scp->cmd_len == 16) {
1354 ldio->lba_count = cpu_to_le32(((u32) scp->cmnd[10] << 24) |
1355 ((u32) scp->cmnd[11] << 16) |
1356 ((u32) scp->cmnd[12] << 8) |
1357 (u32) scp->cmnd[13]);
1358
1359 ldio->start_lba_lo = cpu_to_le32(((u32) scp->cmnd[6] << 24) |
1360 ((u32) scp->cmnd[7] << 16) |
1361 ((u32) scp->cmnd[8] << 8) |
1362 (u32) scp->cmnd[9]);
1363
1364 ldio->start_lba_hi = cpu_to_le32(((u32) scp->cmnd[2] << 24) |
1365 ((u32) scp->cmnd[3] << 16) |
1366 ((u32) scp->cmnd[4] << 8) |
1367 (u32) scp->cmnd[5]);
1368
1369 }
1370
1371 /*
1372 * Construct SGL
1373 */
1374 if (instance->flag_ieee) {
1375 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1376 ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
1377 &ldio->sgl);
1378 } else if (IS_DMA64) {
1379 ldio->flags |= cpu_to_le16(MFI_FRAME_SGL64);
1380 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
1381 } else
1382 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
1383
1384 if (ldio->sge_count > instance->max_num_sge) {
1385 printk(KERN_ERR "megasas: build_ld_io: sge_count = %x\n",
1386 ldio->sge_count);
1387 return 0;
1388 }
1389
1390 /*
1391 * Sense info specific
1392 */
1393 ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
1394 ldio->sense_buf_phys_addr_hi = 0;
1395 ldio->sense_buf_phys_addr_lo = cpu_to_le32(cmd->sense_phys_addr);
1396
1397 /*
1398 * Compute the total number of frames this command consumes. FW uses
1399 * this number to pull sufficient number of frames from host memory.
1400 */
1401 cmd->frame_count = megasas_get_frame_count(instance,
1402 ldio->sge_count, IO_FRAME);
1403
1404 return cmd->frame_count;
1405 }
1406
1407 /**
1408 * megasas_cmd_type - Checks if the cmd is for logical drive/sysPD
1409 * and whether it's RW or non RW
1410 * @scmd: SCSI command
1411 *
1412 */
1413 inline int megasas_cmd_type(struct scsi_cmnd *cmd)
1414 {
1415 int ret;
1416
1417 switch (cmd->cmnd[0]) {
1418 case READ_10:
1419 case WRITE_10:
1420 case READ_12:
1421 case WRITE_12:
1422 case READ_6:
1423 case WRITE_6:
1424 case READ_16:
1425 case WRITE_16:
1426 ret = (MEGASAS_IS_LOGICAL(cmd)) ?
1427 READ_WRITE_LDIO : READ_WRITE_SYSPDIO;
1428 break;
1429 default:
1430 ret = (MEGASAS_IS_LOGICAL(cmd)) ?
1431 NON_READ_WRITE_LDIO : NON_READ_WRITE_SYSPDIO;
1432 }
1433 return ret;
1434 }
1435
1436 /**
1437 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds
1438 * in FW
1439 * @instance: Adapter soft state
1440 */
1441 static inline void
1442 megasas_dump_pending_frames(struct megasas_instance *instance)
1443 {
1444 struct megasas_cmd *cmd;
1445 int i,n;
1446 union megasas_sgl *mfi_sgl;
1447 struct megasas_io_frame *ldio;
1448 struct megasas_pthru_frame *pthru;
1449 u32 sgcount;
1450 u32 max_cmd = instance->max_fw_cmds;
1451
1452 printk(KERN_ERR "\nmegasas[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
1453 printk(KERN_ERR "megasas[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1454 if (IS_DMA64)
1455 printk(KERN_ERR "\nmegasas[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1456 else
1457 printk(KERN_ERR "\nmegasas[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1458
1459 printk(KERN_ERR "megasas[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1460 for (i = 0; i < max_cmd; i++) {
1461 cmd = instance->cmd_list[i];
1462 if(!cmd->scmd)
1463 continue;
1464 printk(KERN_ERR "megasas[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
1465 if (megasas_cmd_type(cmd->scmd) == READ_WRITE_LDIO) {
1466 ldio = (struct megasas_io_frame *)cmd->frame;
1467 mfi_sgl = &ldio->sgl;
1468 sgcount = ldio->sge_count;
1469 printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x,"
1470 " lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1471 instance->host->host_no, cmd->frame_count, ldio->cmd, ldio->target_id,
1472 le32_to_cpu(ldio->start_lba_lo), le32_to_cpu(ldio->start_lba_hi),
1473 le32_to_cpu(ldio->sense_buf_phys_addr_lo), sgcount);
1474 }
1475 else {
1476 pthru = (struct megasas_pthru_frame *) cmd->frame;
1477 mfi_sgl = &pthru->sgl;
1478 sgcount = pthru->sge_count;
1479 printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, "
1480 "lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",
1481 instance->host->host_no, cmd->frame_count, pthru->cmd, pthru->target_id,
1482 pthru->lun, pthru->cdb_len, le32_to_cpu(pthru->data_xfer_len),
1483 le32_to_cpu(pthru->sense_buf_phys_addr_lo), sgcount);
1484 }
1485 if(megasas_dbg_lvl & MEGASAS_DBG_LVL){
1486 for (n = 0; n < sgcount; n++){
1487 if (IS_DMA64)
1488 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%llx ",
1489 le32_to_cpu(mfi_sgl->sge64[n].length),
1490 le64_to_cpu(mfi_sgl->sge64[n].phys_addr));
1491 else
1492 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%x ",
1493 le32_to_cpu(mfi_sgl->sge32[n].length),
1494 le32_to_cpu(mfi_sgl->sge32[n].phys_addr));
1495 }
1496 }
1497 printk(KERN_ERR "\n");
1498 } /*for max_cmd*/
1499 printk(KERN_ERR "\nmegasas[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1500 for (i = 0; i < max_cmd; i++) {
1501
1502 cmd = instance->cmd_list[i];
1503
1504 if(cmd->sync_cmd == 1){
1505 printk(KERN_ERR "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1506 }
1507 }
1508 printk(KERN_ERR "megasas[%d]: Dumping Done.\n\n",instance->host->host_no);
1509 }
1510
1511 u32
1512 megasas_build_and_issue_cmd(struct megasas_instance *instance,
1513 struct scsi_cmnd *scmd)
1514 {
1515 struct megasas_cmd *cmd;
1516 u32 frame_count;
1517
1518 cmd = megasas_get_cmd(instance);
1519 if (!cmd)
1520 return SCSI_MLQUEUE_HOST_BUSY;
1521
1522 /*
1523 * Logical drive command
1524 */
1525 if (megasas_cmd_type(scmd) == READ_WRITE_LDIO)
1526 frame_count = megasas_build_ldio(instance, scmd, cmd);
1527 else
1528 frame_count = megasas_build_dcdb(instance, scmd, cmd);
1529
1530 if (!frame_count)
1531 goto out_return_cmd;
1532
1533 cmd->scmd = scmd;
1534 scmd->SCp.ptr = (char *)cmd;
1535
1536 /*
1537 * Issue the command to the FW
1538 */
1539 atomic_inc(&instance->fw_outstanding);
1540
1541 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
1542 cmd->frame_count-1, instance->reg_set);
1543
1544 return 0;
1545 out_return_cmd:
1546 megasas_return_cmd(instance, cmd);
1547 return 1;
1548 }
1549
1550
1551 /**
1552 * megasas_queue_command - Queue entry point
1553 * @scmd: SCSI command to be queued
1554 * @done: Callback entry point
1555 */
1556 static int
1557 megasas_queue_command(struct Scsi_Host *shost, struct scsi_cmnd *scmd)
1558 {
1559 struct megasas_instance *instance;
1560 unsigned long flags;
1561
1562 instance = (struct megasas_instance *)
1563 scmd->device->host->hostdata;
1564
1565 if (instance->unload == 1) {
1566 scmd->result = DID_NO_CONNECT << 16;
1567 scmd->scsi_done(scmd);
1568 return 0;
1569 }
1570
1571 if (instance->issuepend_done == 0)
1572 return SCSI_MLQUEUE_HOST_BUSY;
1573
1574 spin_lock_irqsave(&instance->hba_lock, flags);
1575
1576 /* Check for an mpio path and adjust behavior */
1577 if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) {
1578 if (megasas_check_mpio_paths(instance, scmd) ==
1579 (DID_RESET << 16)) {
1580 spin_unlock_irqrestore(&instance->hba_lock, flags);
1581 return SCSI_MLQUEUE_HOST_BUSY;
1582 } else {
1583 spin_unlock_irqrestore(&instance->hba_lock, flags);
1584 scmd->result = DID_NO_CONNECT << 16;
1585 scmd->scsi_done(scmd);
1586 return 0;
1587 }
1588 }
1589
1590 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
1591 spin_unlock_irqrestore(&instance->hba_lock, flags);
1592 scmd->result = DID_NO_CONNECT << 16;
1593 scmd->scsi_done(scmd);
1594 return 0;
1595 }
1596
1597 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
1598 spin_unlock_irqrestore(&instance->hba_lock, flags);
1599 return SCSI_MLQUEUE_HOST_BUSY;
1600 }
1601
1602 spin_unlock_irqrestore(&instance->hba_lock, flags);
1603
1604 scmd->result = 0;
1605
1606 if (MEGASAS_IS_LOGICAL(scmd) &&
1607 (scmd->device->id >= instance->fw_supported_vd_count ||
1608 scmd->device->lun)) {
1609 scmd->result = DID_BAD_TARGET << 16;
1610 goto out_done;
1611 }
1612
1613 switch (scmd->cmnd[0]) {
1614 case SYNCHRONIZE_CACHE:
1615 /*
1616 * FW takes care of flush cache on its own
1617 * No need to send it down
1618 */
1619 scmd->result = DID_OK << 16;
1620 goto out_done;
1621 default:
1622 break;
1623 }
1624
1625 if (instance->instancet->build_and_issue_cmd(instance, scmd)) {
1626 printk(KERN_ERR "megasas: Err returned from build_and_issue_cmd\n");
1627 return SCSI_MLQUEUE_HOST_BUSY;
1628 }
1629
1630 return 0;
1631
1632 out_done:
1633 scmd->scsi_done(scmd);
1634 return 0;
1635 }
1636
1637 static struct megasas_instance *megasas_lookup_instance(u16 host_no)
1638 {
1639 int i;
1640
1641 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
1642
1643 if ((megasas_mgmt_info.instance[i]) &&
1644 (megasas_mgmt_info.instance[i]->host->host_no == host_no))
1645 return megasas_mgmt_info.instance[i];
1646 }
1647
1648 return NULL;
1649 }
1650
1651 static int megasas_slave_configure(struct scsi_device *sdev)
1652 {
1653 /*
1654 * The RAID firmware may require extended timeouts.
1655 */
1656 blk_queue_rq_timeout(sdev->request_queue,
1657 MEGASAS_DEFAULT_CMD_TIMEOUT * HZ);
1658
1659 return 0;
1660 }
1661
1662 static int megasas_slave_alloc(struct scsi_device *sdev)
1663 {
1664 u16 pd_index = 0;
1665 struct megasas_instance *instance ;
1666 instance = megasas_lookup_instance(sdev->host->host_no);
1667 if (sdev->channel < MEGASAS_MAX_PD_CHANNELS) {
1668 /*
1669 * Open the OS scan to the SYSTEM PD
1670 */
1671 pd_index =
1672 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1673 sdev->id;
1674 if (instance->pd_list[pd_index].driveState ==
1675 MR_PD_STATE_SYSTEM) {
1676 return 0;
1677 }
1678 return -ENXIO;
1679 }
1680 return 0;
1681 }
1682
1683 /*
1684 * megasas_complete_outstanding_ioctls - Complete outstanding ioctls after a
1685 * kill adapter
1686 * @instance: Adapter soft state
1687 *
1688 */
1689 static void megasas_complete_outstanding_ioctls(struct megasas_instance *instance)
1690 {
1691 int i;
1692 struct megasas_cmd *cmd_mfi;
1693 struct megasas_cmd_fusion *cmd_fusion;
1694 struct fusion_context *fusion = instance->ctrl_context;
1695
1696 /* Find all outstanding ioctls */
1697 if (fusion) {
1698 for (i = 0; i < instance->max_fw_cmds; i++) {
1699 cmd_fusion = fusion->cmd_list[i];
1700 if (cmd_fusion->sync_cmd_idx != (u32)ULONG_MAX) {
1701 cmd_mfi = instance->cmd_list[cmd_fusion->sync_cmd_idx];
1702 if (cmd_mfi->sync_cmd &&
1703 cmd_mfi->frame->hdr.cmd != MFI_CMD_ABORT)
1704 megasas_complete_cmd(instance,
1705 cmd_mfi, DID_OK);
1706 }
1707 }
1708 } else {
1709 for (i = 0; i < instance->max_fw_cmds; i++) {
1710 cmd_mfi = instance->cmd_list[i];
1711 if (cmd_mfi->sync_cmd && cmd_mfi->frame->hdr.cmd !=
1712 MFI_CMD_ABORT)
1713 megasas_complete_cmd(instance, cmd_mfi, DID_OK);
1714 }
1715 }
1716 }
1717
1718
1719 void megaraid_sas_kill_hba(struct megasas_instance *instance)
1720 {
1721 /* Set critical error to block I/O & ioctls in case caller didn't */
1722 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
1723 /* Wait 1 second to ensure IO or ioctls in build have posted */
1724 msleep(1000);
1725 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
1726 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
1727 (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
1728 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) ||
1729 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
1730 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
1731 writel(MFI_STOP_ADP,
1732 &instance->reg_set->doorbell);
1733 /* Flush */
1734 readl(&instance->reg_set->doorbell);
1735 if (instance->mpio && instance->requestorId)
1736 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
1737 } else {
1738 writel(MFI_STOP_ADP,
1739 &instance->reg_set->inbound_doorbell);
1740 }
1741 /* Complete outstanding ioctls when adapter is killed */
1742 megasas_complete_outstanding_ioctls(instance);
1743 }
1744
1745 /**
1746 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
1747 * restored to max value
1748 * @instance: Adapter soft state
1749 *
1750 */
1751 void
1752 megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
1753 {
1754 unsigned long flags;
1755
1756 if (instance->flag & MEGASAS_FW_BUSY
1757 && time_after(jiffies, instance->last_time + 5 * HZ)
1758 && atomic_read(&instance->fw_outstanding) <
1759 instance->throttlequeuedepth + 1) {
1760
1761 spin_lock_irqsave(instance->host->host_lock, flags);
1762 instance->flag &= ~MEGASAS_FW_BUSY;
1763
1764 instance->host->can_queue = instance->max_scsi_cmds;
1765 spin_unlock_irqrestore(instance->host->host_lock, flags);
1766 }
1767 }
1768
1769 /**
1770 * megasas_complete_cmd_dpc - Returns FW's controller structure
1771 * @instance_addr: Address of adapter soft state
1772 *
1773 * Tasklet to complete cmds
1774 */
1775 static void megasas_complete_cmd_dpc(unsigned long instance_addr)
1776 {
1777 u32 producer;
1778 u32 consumer;
1779 u32 context;
1780 struct megasas_cmd *cmd;
1781 struct megasas_instance *instance =
1782 (struct megasas_instance *)instance_addr;
1783 unsigned long flags;
1784
1785 /* If we have already declared adapter dead, donot complete cmds */
1786 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR )
1787 return;
1788
1789 spin_lock_irqsave(&instance->completion_lock, flags);
1790
1791 producer = le32_to_cpu(*instance->producer);
1792 consumer = le32_to_cpu(*instance->consumer);
1793
1794 while (consumer != producer) {
1795 context = le32_to_cpu(instance->reply_queue[consumer]);
1796 if (context >= instance->max_fw_cmds) {
1797 printk(KERN_ERR "Unexpected context value %x\n",
1798 context);
1799 BUG();
1800 }
1801
1802 cmd = instance->cmd_list[context];
1803
1804 megasas_complete_cmd(instance, cmd, DID_OK);
1805
1806 consumer++;
1807 if (consumer == (instance->max_fw_cmds + 1)) {
1808 consumer = 0;
1809 }
1810 }
1811
1812 *instance->consumer = cpu_to_le32(producer);
1813
1814 spin_unlock_irqrestore(&instance->completion_lock, flags);
1815
1816 /*
1817 * Check if we can restore can_queue
1818 */
1819 megasas_check_and_restore_queue_depth(instance);
1820 }
1821
1822 /**
1823 * megasas_start_timer - Initializes a timer object
1824 * @instance: Adapter soft state
1825 * @timer: timer object to be initialized
1826 * @fn: timer function
1827 * @interval: time interval between timer function call
1828 *
1829 */
1830 void megasas_start_timer(struct megasas_instance *instance,
1831 struct timer_list *timer,
1832 void *fn, unsigned long interval)
1833 {
1834 init_timer(timer);
1835 timer->expires = jiffies + interval;
1836 timer->data = (unsigned long)instance;
1837 timer->function = fn;
1838 add_timer(timer);
1839 }
1840
1841 static void
1842 megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
1843
1844 static void
1845 process_fw_state_change_wq(struct work_struct *work);
1846
1847 void megasas_do_ocr(struct megasas_instance *instance)
1848 {
1849 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
1850 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
1851 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
1852 *instance->consumer = cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
1853 }
1854 instance->instancet->disable_intr(instance);
1855 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
1856 instance->issuepend_done = 0;
1857
1858 atomic_set(&instance->fw_outstanding, 0);
1859 megasas_internal_reset_defer_cmds(instance);
1860 process_fw_state_change_wq(&instance->work_init);
1861 }
1862
1863 static int megasas_get_ld_vf_affiliation_111(struct megasas_instance *instance,
1864 int initial)
1865 {
1866 struct megasas_cmd *cmd;
1867 struct megasas_dcmd_frame *dcmd;
1868 struct MR_LD_VF_AFFILIATION_111 *new_affiliation_111 = NULL;
1869 dma_addr_t new_affiliation_111_h;
1870 int ld, retval = 0;
1871 u8 thisVf;
1872
1873 cmd = megasas_get_cmd(instance);
1874
1875 if (!cmd) {
1876 printk(KERN_DEBUG "megasas: megasas_get_ld_vf_affiliation_111:"
1877 "Failed to get cmd for scsi%d.\n",
1878 instance->host->host_no);
1879 return -ENOMEM;
1880 }
1881
1882 dcmd = &cmd->frame->dcmd;
1883
1884 if (!instance->vf_affiliation_111) {
1885 printk(KERN_WARNING "megasas: SR-IOV: Couldn't get LD/VF "
1886 "affiliation for scsi%d.\n", instance->host->host_no);
1887 megasas_return_cmd(instance, cmd);
1888 return -ENOMEM;
1889 }
1890
1891 if (initial)
1892 memset(instance->vf_affiliation_111, 0,
1893 sizeof(struct MR_LD_VF_AFFILIATION_111));
1894 else {
1895 new_affiliation_111 =
1896 pci_alloc_consistent(instance->pdev,
1897 sizeof(struct MR_LD_VF_AFFILIATION_111),
1898 &new_affiliation_111_h);
1899 if (!new_affiliation_111) {
1900 printk(KERN_DEBUG "megasas: SR-IOV: Couldn't allocate "
1901 "memory for new affiliation for scsi%d.\n",
1902 instance->host->host_no);
1903 megasas_return_cmd(instance, cmd);
1904 return -ENOMEM;
1905 }
1906 memset(new_affiliation_111, 0,
1907 sizeof(struct MR_LD_VF_AFFILIATION_111));
1908 }
1909
1910 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
1911
1912 dcmd->cmd = MFI_CMD_DCMD;
1913 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
1914 dcmd->sge_count = 1;
1915 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
1916 dcmd->timeout = 0;
1917 dcmd->pad_0 = 0;
1918 dcmd->data_xfer_len =
1919 cpu_to_le32(sizeof(struct MR_LD_VF_AFFILIATION_111));
1920 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS_111);
1921
1922 if (initial)
1923 dcmd->sgl.sge32[0].phys_addr =
1924 cpu_to_le32(instance->vf_affiliation_111_h);
1925 else
1926 dcmd->sgl.sge32[0].phys_addr =
1927 cpu_to_le32(new_affiliation_111_h);
1928
1929 dcmd->sgl.sge32[0].length = cpu_to_le32(
1930 sizeof(struct MR_LD_VF_AFFILIATION_111));
1931
1932 printk(KERN_WARNING "megasas: SR-IOV: Getting LD/VF affiliation for "
1933 "scsi%d\n", instance->host->host_no);
1934
1935 megasas_issue_blocked_cmd(instance, cmd, 0);
1936
1937 if (dcmd->cmd_status) {
1938 printk(KERN_WARNING "megasas: SR-IOV: LD/VF affiliation DCMD"
1939 " failed with status 0x%x for scsi%d.\n",
1940 dcmd->cmd_status, instance->host->host_no);
1941 retval = 1; /* Do a scan if we couldn't get affiliation */
1942 goto out;
1943 }
1944
1945 if (!initial) {
1946 thisVf = new_affiliation_111->thisVf;
1947 for (ld = 0 ; ld < new_affiliation_111->vdCount; ld++)
1948 if (instance->vf_affiliation_111->map[ld].policy[thisVf] !=
1949 new_affiliation_111->map[ld].policy[thisVf]) {
1950 printk(KERN_WARNING "megasas: SR-IOV: "
1951 "Got new LD/VF affiliation "
1952 "for scsi%d.\n",
1953 instance->host->host_no);
1954 memcpy(instance->vf_affiliation_111,
1955 new_affiliation_111,
1956 sizeof(struct MR_LD_VF_AFFILIATION_111));
1957 retval = 1;
1958 goto out;
1959 }
1960 }
1961 out:
1962 if (new_affiliation_111) {
1963 pci_free_consistent(instance->pdev,
1964 sizeof(struct MR_LD_VF_AFFILIATION_111),
1965 new_affiliation_111,
1966 new_affiliation_111_h);
1967 }
1968
1969 megasas_return_cmd(instance, cmd);
1970
1971 return retval;
1972 }
1973
1974 static int megasas_get_ld_vf_affiliation_12(struct megasas_instance *instance,
1975 int initial)
1976 {
1977 struct megasas_cmd *cmd;
1978 struct megasas_dcmd_frame *dcmd;
1979 struct MR_LD_VF_AFFILIATION *new_affiliation = NULL;
1980 struct MR_LD_VF_MAP *newmap = NULL, *savedmap = NULL;
1981 dma_addr_t new_affiliation_h;
1982 int i, j, retval = 0, found = 0, doscan = 0;
1983 u8 thisVf;
1984
1985 cmd = megasas_get_cmd(instance);
1986
1987 if (!cmd) {
1988 printk(KERN_DEBUG "megasas: megasas_get_ld_vf_affiliation12: "
1989 "Failed to get cmd for scsi%d.\n",
1990 instance->host->host_no);
1991 return -ENOMEM;
1992 }
1993
1994 dcmd = &cmd->frame->dcmd;
1995
1996 if (!instance->vf_affiliation) {
1997 printk(KERN_WARNING "megasas: SR-IOV: Couldn't get LD/VF "
1998 "affiliation for scsi%d.\n", instance->host->host_no);
1999 megasas_return_cmd(instance, cmd);
2000 return -ENOMEM;
2001 }
2002
2003 if (initial)
2004 memset(instance->vf_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
2005 sizeof(struct MR_LD_VF_AFFILIATION));
2006 else {
2007 new_affiliation =
2008 pci_alloc_consistent(instance->pdev,
2009 (MAX_LOGICAL_DRIVES + 1) *
2010 sizeof(struct MR_LD_VF_AFFILIATION),
2011 &new_affiliation_h);
2012 if (!new_affiliation) {
2013 printk(KERN_DEBUG "megasas: SR-IOV: Couldn't allocate "
2014 "memory for new affiliation for scsi%d.\n",
2015 instance->host->host_no);
2016 megasas_return_cmd(instance, cmd);
2017 return -ENOMEM;
2018 }
2019 memset(new_affiliation, 0, (MAX_LOGICAL_DRIVES + 1) *
2020 sizeof(struct MR_LD_VF_AFFILIATION));
2021 }
2022
2023 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2024
2025 dcmd->cmd = MFI_CMD_DCMD;
2026 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2027 dcmd->sge_count = 1;
2028 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2029 dcmd->timeout = 0;
2030 dcmd->pad_0 = 0;
2031 dcmd->data_xfer_len = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2032 sizeof(struct MR_LD_VF_AFFILIATION));
2033 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_VF_MAP_GET_ALL_LDS);
2034
2035 if (initial)
2036 dcmd->sgl.sge32[0].phys_addr =
2037 cpu_to_le32(instance->vf_affiliation_h);
2038 else
2039 dcmd->sgl.sge32[0].phys_addr =
2040 cpu_to_le32(new_affiliation_h);
2041
2042 dcmd->sgl.sge32[0].length = cpu_to_le32((MAX_LOGICAL_DRIVES + 1) *
2043 sizeof(struct MR_LD_VF_AFFILIATION));
2044
2045 printk(KERN_WARNING "megasas: SR-IOV: Getting LD/VF affiliation for "
2046 "scsi%d\n", instance->host->host_no);
2047
2048 megasas_issue_blocked_cmd(instance, cmd, 0);
2049
2050 if (dcmd->cmd_status) {
2051 printk(KERN_WARNING "megasas: SR-IOV: LD/VF affiliation DCMD"
2052 " failed with status 0x%x for scsi%d.\n",
2053 dcmd->cmd_status, instance->host->host_no);
2054 retval = 1; /* Do a scan if we couldn't get affiliation */
2055 goto out;
2056 }
2057
2058 if (!initial) {
2059 if (!new_affiliation->ldCount) {
2060 printk(KERN_WARNING "megasas: SR-IOV: Got new LD/VF "
2061 "affiliation for passive path for scsi%d.\n",
2062 instance->host->host_no);
2063 retval = 1;
2064 goto out;
2065 }
2066 newmap = new_affiliation->map;
2067 savedmap = instance->vf_affiliation->map;
2068 thisVf = new_affiliation->thisVf;
2069 for (i = 0 ; i < new_affiliation->ldCount; i++) {
2070 found = 0;
2071 for (j = 0; j < instance->vf_affiliation->ldCount;
2072 j++) {
2073 if (newmap->ref.targetId ==
2074 savedmap->ref.targetId) {
2075 found = 1;
2076 if (newmap->policy[thisVf] !=
2077 savedmap->policy[thisVf]) {
2078 doscan = 1;
2079 goto out;
2080 }
2081 }
2082 savedmap = (struct MR_LD_VF_MAP *)
2083 ((unsigned char *)savedmap +
2084 savedmap->size);
2085 }
2086 if (!found && newmap->policy[thisVf] !=
2087 MR_LD_ACCESS_HIDDEN) {
2088 doscan = 1;
2089 goto out;
2090 }
2091 newmap = (struct MR_LD_VF_MAP *)
2092 ((unsigned char *)newmap + newmap->size);
2093 }
2094
2095 newmap = new_affiliation->map;
2096 savedmap = instance->vf_affiliation->map;
2097
2098 for (i = 0 ; i < instance->vf_affiliation->ldCount; i++) {
2099 found = 0;
2100 for (j = 0 ; j < new_affiliation->ldCount; j++) {
2101 if (savedmap->ref.targetId ==
2102 newmap->ref.targetId) {
2103 found = 1;
2104 if (savedmap->policy[thisVf] !=
2105 newmap->policy[thisVf]) {
2106 doscan = 1;
2107 goto out;
2108 }
2109 }
2110 newmap = (struct MR_LD_VF_MAP *)
2111 ((unsigned char *)newmap +
2112 newmap->size);
2113 }
2114 if (!found && savedmap->policy[thisVf] !=
2115 MR_LD_ACCESS_HIDDEN) {
2116 doscan = 1;
2117 goto out;
2118 }
2119 savedmap = (struct MR_LD_VF_MAP *)
2120 ((unsigned char *)savedmap +
2121 savedmap->size);
2122 }
2123 }
2124 out:
2125 if (doscan) {
2126 printk(KERN_WARNING "megasas: SR-IOV: Got new LD/VF "
2127 "affiliation for scsi%d.\n", instance->host->host_no);
2128 memcpy(instance->vf_affiliation, new_affiliation,
2129 new_affiliation->size);
2130 retval = 1;
2131 }
2132
2133 if (new_affiliation)
2134 pci_free_consistent(instance->pdev,
2135 (MAX_LOGICAL_DRIVES + 1) *
2136 sizeof(struct MR_LD_VF_AFFILIATION),
2137 new_affiliation, new_affiliation_h);
2138 megasas_return_cmd(instance, cmd);
2139
2140 return retval;
2141 }
2142
2143 /* This function will get the current SR-IOV LD/VF affiliation */
2144 static int megasas_get_ld_vf_affiliation(struct megasas_instance *instance,
2145 int initial)
2146 {
2147 int retval;
2148
2149 if (instance->PlasmaFW111)
2150 retval = megasas_get_ld_vf_affiliation_111(instance, initial);
2151 else
2152 retval = megasas_get_ld_vf_affiliation_12(instance, initial);
2153 return retval;
2154 }
2155
2156 /* This function will tell FW to start the SR-IOV heartbeat */
2157 int megasas_sriov_start_heartbeat(struct megasas_instance *instance,
2158 int initial)
2159 {
2160 struct megasas_cmd *cmd;
2161 struct megasas_dcmd_frame *dcmd;
2162 int retval = 0;
2163
2164 cmd = megasas_get_cmd(instance);
2165
2166 if (!cmd) {
2167 printk(KERN_DEBUG "megasas: megasas_sriov_start_heartbeat: "
2168 "Failed to get cmd for scsi%d.\n",
2169 instance->host->host_no);
2170 return -ENOMEM;
2171 }
2172
2173 dcmd = &cmd->frame->dcmd;
2174
2175 if (initial) {
2176 instance->hb_host_mem =
2177 pci_zalloc_consistent(instance->pdev,
2178 sizeof(struct MR_CTRL_HB_HOST_MEM),
2179 &instance->hb_host_mem_h);
2180 if (!instance->hb_host_mem) {
2181 printk(KERN_DEBUG "megasas: SR-IOV: Couldn't allocate"
2182 " memory for heartbeat host memory for "
2183 "scsi%d.\n", instance->host->host_no);
2184 retval = -ENOMEM;
2185 goto out;
2186 }
2187 }
2188
2189 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
2190
2191 dcmd->mbox.s[0] = cpu_to_le16(sizeof(struct MR_CTRL_HB_HOST_MEM));
2192 dcmd->cmd = MFI_CMD_DCMD;
2193 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
2194 dcmd->sge_count = 1;
2195 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_BOTH);
2196 dcmd->timeout = 0;
2197 dcmd->pad_0 = 0;
2198 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM));
2199 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SHARED_HOST_MEM_ALLOC);
2200 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->hb_host_mem_h);
2201 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_CTRL_HB_HOST_MEM));
2202
2203 printk(KERN_WARNING "megasas: SR-IOV: Starting heartbeat for scsi%d\n",
2204 instance->host->host_no);
2205
2206 if (instance->ctrl_context && !instance->mask_interrupts)
2207 retval = megasas_issue_blocked_cmd(instance, cmd,
2208 MEGASAS_ROUTINE_WAIT_TIME_VF);
2209 else
2210 retval = megasas_issue_polled(instance, cmd);
2211
2212 if (retval) {
2213 dev_warn(&instance->pdev->dev, "SR-IOV: MR_DCMD_CTRL_SHARED_HOST"
2214 "_MEM_ALLOC DCMD %s for scsi%d\n",
2215 (dcmd->cmd_status == MFI_STAT_INVALID_STATUS) ?
2216 "timed out" : "failed", instance->host->host_no);
2217 retval = 1;
2218 }
2219
2220 out:
2221 megasas_return_cmd(instance, cmd);
2222
2223 return retval;
2224 }
2225
2226 /* Handler for SR-IOV heartbeat */
2227 void megasas_sriov_heartbeat_handler(unsigned long instance_addr)
2228 {
2229 struct megasas_instance *instance =
2230 (struct megasas_instance *)instance_addr;
2231
2232 if (instance->hb_host_mem->HB.fwCounter !=
2233 instance->hb_host_mem->HB.driverCounter) {
2234 instance->hb_host_mem->HB.driverCounter =
2235 instance->hb_host_mem->HB.fwCounter;
2236 mod_timer(&instance->sriov_heartbeat_timer,
2237 jiffies + MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
2238 } else {
2239 printk(KERN_WARNING "megasas: SR-IOV: Heartbeat never "
2240 "completed for scsi%d\n", instance->host->host_no);
2241 schedule_work(&instance->work_init);
2242 }
2243 }
2244
2245 /**
2246 * megasas_wait_for_outstanding - Wait for all outstanding cmds
2247 * @instance: Adapter soft state
2248 *
2249 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
2250 * complete all its outstanding commands. Returns error if one or more IOs
2251 * are pending after this time period. It also marks the controller dead.
2252 */
2253 static int megasas_wait_for_outstanding(struct megasas_instance *instance)
2254 {
2255 int i;
2256 u32 reset_index;
2257 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
2258 u8 adprecovery;
2259 unsigned long flags;
2260 struct list_head clist_local;
2261 struct megasas_cmd *reset_cmd;
2262 u32 fw_state;
2263 u8 kill_adapter_flag;
2264
2265 spin_lock_irqsave(&instance->hba_lock, flags);
2266 adprecovery = instance->adprecovery;
2267 spin_unlock_irqrestore(&instance->hba_lock, flags);
2268
2269 if (adprecovery != MEGASAS_HBA_OPERATIONAL) {
2270
2271 INIT_LIST_HEAD(&clist_local);
2272 spin_lock_irqsave(&instance->hba_lock, flags);
2273 list_splice_init(&instance->internal_reset_pending_q,
2274 &clist_local);
2275 spin_unlock_irqrestore(&instance->hba_lock, flags);
2276
2277 printk(KERN_NOTICE "megasas: HBA reset wait ...\n");
2278 for (i = 0; i < wait_time; i++) {
2279 msleep(1000);
2280 spin_lock_irqsave(&instance->hba_lock, flags);
2281 adprecovery = instance->adprecovery;
2282 spin_unlock_irqrestore(&instance->hba_lock, flags);
2283 if (adprecovery == MEGASAS_HBA_OPERATIONAL)
2284 break;
2285 }
2286
2287 if (adprecovery != MEGASAS_HBA_OPERATIONAL) {
2288 printk(KERN_NOTICE "megasas: reset: Stopping HBA.\n");
2289 spin_lock_irqsave(&instance->hba_lock, flags);
2290 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
2291 spin_unlock_irqrestore(&instance->hba_lock, flags);
2292 return FAILED;
2293 }
2294
2295 reset_index = 0;
2296 while (!list_empty(&clist_local)) {
2297 reset_cmd = list_entry((&clist_local)->next,
2298 struct megasas_cmd, list);
2299 list_del_init(&reset_cmd->list);
2300 if (reset_cmd->scmd) {
2301 reset_cmd->scmd->result = DID_RESET << 16;
2302 printk(KERN_NOTICE "%d:%p reset [%02x]\n",
2303 reset_index, reset_cmd,
2304 reset_cmd->scmd->cmnd[0]);
2305
2306 reset_cmd->scmd->scsi_done(reset_cmd->scmd);
2307 megasas_return_cmd(instance, reset_cmd);
2308 } else if (reset_cmd->sync_cmd) {
2309 printk(KERN_NOTICE "megasas:%p synch cmds"
2310 "reset queue\n",
2311 reset_cmd);
2312
2313 reset_cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
2314 instance->instancet->fire_cmd(instance,
2315 reset_cmd->frame_phys_addr,
2316 0, instance->reg_set);
2317 } else {
2318 printk(KERN_NOTICE "megasas: %p unexpected"
2319 "cmds lst\n",
2320 reset_cmd);
2321 }
2322 reset_index++;
2323 }
2324
2325 return SUCCESS;
2326 }
2327
2328 for (i = 0; i < resetwaittime; i++) {
2329
2330 int outstanding = atomic_read(&instance->fw_outstanding);
2331
2332 if (!outstanding)
2333 break;
2334
2335 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
2336 printk(KERN_NOTICE "megasas: [%2d]waiting for %d "
2337 "commands to complete\n",i,outstanding);
2338 /*
2339 * Call cmd completion routine. Cmd to be
2340 * be completed directly without depending on isr.
2341 */
2342 megasas_complete_cmd_dpc((unsigned long)instance);
2343 }
2344
2345 msleep(1000);
2346 }
2347
2348 i = 0;
2349 kill_adapter_flag = 0;
2350 do {
2351 fw_state = instance->instancet->read_fw_status_reg(
2352 instance->reg_set) & MFI_STATE_MASK;
2353 if ((fw_state == MFI_STATE_FAULT) &&
2354 (instance->disableOnlineCtrlReset == 0)) {
2355 if (i == 3) {
2356 kill_adapter_flag = 2;
2357 break;
2358 }
2359 megasas_do_ocr(instance);
2360 kill_adapter_flag = 1;
2361
2362 /* wait for 1 secs to let FW finish the pending cmds */
2363 msleep(1000);
2364 }
2365 i++;
2366 } while (i <= 3);
2367
2368 if (atomic_read(&instance->fw_outstanding) &&
2369 !kill_adapter_flag) {
2370 if (instance->disableOnlineCtrlReset == 0) {
2371
2372 megasas_do_ocr(instance);
2373
2374 /* wait for 5 secs to let FW finish the pending cmds */
2375 for (i = 0; i < wait_time; i++) {
2376 int outstanding =
2377 atomic_read(&instance->fw_outstanding);
2378 if (!outstanding)
2379 return SUCCESS;
2380 msleep(1000);
2381 }
2382 }
2383 }
2384
2385 if (atomic_read(&instance->fw_outstanding) ||
2386 (kill_adapter_flag == 2)) {
2387 printk(KERN_NOTICE "megaraid_sas: pending cmds after reset\n");
2388 /*
2389 * Send signal to FW to stop processing any pending cmds.
2390 * The controller will be taken offline by the OS now.
2391 */
2392 if ((instance->pdev->device ==
2393 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2394 (instance->pdev->device ==
2395 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
2396 writel(MFI_STOP_ADP,
2397 &instance->reg_set->doorbell);
2398 } else {
2399 writel(MFI_STOP_ADP,
2400 &instance->reg_set->inbound_doorbell);
2401 }
2402 megasas_dump_pending_frames(instance);
2403 spin_lock_irqsave(&instance->hba_lock, flags);
2404 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
2405 spin_unlock_irqrestore(&instance->hba_lock, flags);
2406 return FAILED;
2407 }
2408
2409 printk(KERN_NOTICE "megaraid_sas: no pending cmds after reset\n");
2410
2411 return SUCCESS;
2412 }
2413
2414 /**
2415 * megasas_generic_reset - Generic reset routine
2416 * @scmd: Mid-layer SCSI command
2417 *
2418 * This routine implements a generic reset handler for device, bus and host
2419 * reset requests. Device, bus and host specific reset handlers can use this
2420 * function after they do their specific tasks.
2421 */
2422 static int megasas_generic_reset(struct scsi_cmnd *scmd)
2423 {
2424 int ret_val;
2425 struct megasas_instance *instance;
2426
2427 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2428
2429 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
2430 scmd->cmnd[0], scmd->retries);
2431
2432 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
2433 printk(KERN_ERR "megasas: cannot recover from previous reset "
2434 "failures\n");
2435 return FAILED;
2436 }
2437
2438 ret_val = megasas_wait_for_outstanding(instance);
2439 if (ret_val == SUCCESS)
2440 printk(KERN_NOTICE "megasas: reset successful \n");
2441 else
2442 printk(KERN_ERR "megasas: failed to do reset\n");
2443
2444 return ret_val;
2445 }
2446
2447 /**
2448 * megasas_reset_timer - quiesce the adapter if required
2449 * @scmd: scsi cmnd
2450 *
2451 * Sets the FW busy flag and reduces the host->can_queue if the
2452 * cmd has not been completed within the timeout period.
2453 */
2454 static enum
2455 blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
2456 {
2457 struct megasas_instance *instance;
2458 unsigned long flags;
2459
2460 if (time_after(jiffies, scmd->jiffies_at_alloc +
2461 (MEGASAS_DEFAULT_CMD_TIMEOUT * 2) * HZ)) {
2462 return BLK_EH_NOT_HANDLED;
2463 }
2464
2465 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2466 if (!(instance->flag & MEGASAS_FW_BUSY)) {
2467 /* FW is busy, throttle IO */
2468 spin_lock_irqsave(instance->host->host_lock, flags);
2469
2470 instance->host->can_queue = instance->throttlequeuedepth;
2471 instance->last_time = jiffies;
2472 instance->flag |= MEGASAS_FW_BUSY;
2473
2474 spin_unlock_irqrestore(instance->host->host_lock, flags);
2475 }
2476 return BLK_EH_RESET_TIMER;
2477 }
2478
2479 /**
2480 * megasas_reset_device - Device reset handler entry point
2481 */
2482 static int megasas_reset_device(struct scsi_cmnd *scmd)
2483 {
2484 int ret;
2485
2486 /*
2487 * First wait for all commands to complete
2488 */
2489 ret = megasas_generic_reset(scmd);
2490
2491 return ret;
2492 }
2493
2494 /**
2495 * megasas_reset_bus_host - Bus & host reset handler entry point
2496 */
2497 static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
2498 {
2499 int ret;
2500 struct megasas_instance *instance;
2501 instance = (struct megasas_instance *)scmd->device->host->hostdata;
2502
2503 /*
2504 * First wait for all commands to complete
2505 */
2506 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
2507 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) ||
2508 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
2509 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY))
2510 ret = megasas_reset_fusion(scmd->device->host, 1);
2511 else
2512 ret = megasas_generic_reset(scmd);
2513
2514 return ret;
2515 }
2516
2517 /**
2518 * megasas_bios_param - Returns disk geometry for a disk
2519 * @sdev: device handle
2520 * @bdev: block device
2521 * @capacity: drive capacity
2522 * @geom: geometry parameters
2523 */
2524 static int
2525 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
2526 sector_t capacity, int geom[])
2527 {
2528 int heads;
2529 int sectors;
2530 sector_t cylinders;
2531 unsigned long tmp;
2532 /* Default heads (64) & sectors (32) */
2533 heads = 64;
2534 sectors = 32;
2535
2536 tmp = heads * sectors;
2537 cylinders = capacity;
2538
2539 sector_div(cylinders, tmp);
2540
2541 /*
2542 * Handle extended translation size for logical drives > 1Gb
2543 */
2544
2545 if (capacity >= 0x200000) {
2546 heads = 255;
2547 sectors = 63;
2548 tmp = heads*sectors;
2549 cylinders = capacity;
2550 sector_div(cylinders, tmp);
2551 }
2552
2553 geom[0] = heads;
2554 geom[1] = sectors;
2555 geom[2] = cylinders;
2556
2557 return 0;
2558 }
2559
2560 static void megasas_aen_polling(struct work_struct *work);
2561
2562 /**
2563 * megasas_service_aen - Processes an event notification
2564 * @instance: Adapter soft state
2565 * @cmd: AEN command completed by the ISR
2566 *
2567 * For AEN, driver sends a command down to FW that is held by the FW till an
2568 * event occurs. When an event of interest occurs, FW completes the command
2569 * that it was previously holding.
2570 *
2571 * This routines sends SIGIO signal to processes that have registered with the
2572 * driver for AEN.
2573 */
2574 static void
2575 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
2576 {
2577 unsigned long flags;
2578 /*
2579 * Don't signal app if it is just an aborted previously registered aen
2580 */
2581 if ((!cmd->abort_aen) && (instance->unload == 0)) {
2582 spin_lock_irqsave(&poll_aen_lock, flags);
2583 megasas_poll_wait_aen = 1;
2584 spin_unlock_irqrestore(&poll_aen_lock, flags);
2585 wake_up(&megasas_poll_wait);
2586 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
2587 }
2588 else
2589 cmd->abort_aen = 0;
2590
2591 instance->aen_cmd = NULL;
2592
2593 megasas_return_cmd(instance, cmd);
2594
2595 if ((instance->unload == 0) &&
2596 ((instance->issuepend_done == 1))) {
2597 struct megasas_aen_event *ev;
2598 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
2599 if (!ev) {
2600 printk(KERN_ERR "megasas_service_aen: out of memory\n");
2601 } else {
2602 ev->instance = instance;
2603 instance->ev = ev;
2604 INIT_DELAYED_WORK(&ev->hotplug_work,
2605 megasas_aen_polling);
2606 schedule_delayed_work(&ev->hotplug_work, 0);
2607 }
2608 }
2609 }
2610
2611 static ssize_t
2612 megasas_fw_crash_buffer_store(struct device *cdev,
2613 struct device_attribute *attr, const char *buf, size_t count)
2614 {
2615 struct Scsi_Host *shost = class_to_shost(cdev);
2616 struct megasas_instance *instance =
2617 (struct megasas_instance *) shost->hostdata;
2618 int val = 0;
2619 unsigned long flags;
2620
2621 if (kstrtoint(buf, 0, &val) != 0)
2622 return -EINVAL;
2623
2624 spin_lock_irqsave(&instance->crashdump_lock, flags);
2625 instance->fw_crash_buffer_offset = val;
2626 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2627 return strlen(buf);
2628 }
2629
2630 static ssize_t
2631 megasas_fw_crash_buffer_show(struct device *cdev,
2632 struct device_attribute *attr, char *buf)
2633 {
2634 struct Scsi_Host *shost = class_to_shost(cdev);
2635 struct megasas_instance *instance =
2636 (struct megasas_instance *) shost->hostdata;
2637 u32 size;
2638 unsigned long buff_addr;
2639 unsigned long dmachunk = CRASH_DMA_BUF_SIZE;
2640 unsigned long src_addr;
2641 unsigned long flags;
2642 u32 buff_offset;
2643
2644 spin_lock_irqsave(&instance->crashdump_lock, flags);
2645 buff_offset = instance->fw_crash_buffer_offset;
2646 if (!instance->crash_dump_buf &&
2647 !((instance->fw_crash_state == AVAILABLE) ||
2648 (instance->fw_crash_state == COPYING))) {
2649 dev_err(&instance->pdev->dev,
2650 "Firmware crash dump is not available\n");
2651 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2652 return -EINVAL;
2653 }
2654
2655 buff_addr = (unsigned long) buf;
2656
2657 if (buff_offset >
2658 (instance->fw_crash_buffer_size * dmachunk)) {
2659 dev_err(&instance->pdev->dev,
2660 "Firmware crash dump offset is out of range\n");
2661 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2662 return 0;
2663 }
2664
2665 size = (instance->fw_crash_buffer_size * dmachunk) - buff_offset;
2666 size = (size >= PAGE_SIZE) ? (PAGE_SIZE - 1) : size;
2667
2668 src_addr = (unsigned long)instance->crash_buf[buff_offset / dmachunk] +
2669 (buff_offset % dmachunk);
2670 memcpy(buf, (void *)src_addr, size);
2671 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2672
2673 return size;
2674 }
2675
2676 static ssize_t
2677 megasas_fw_crash_buffer_size_show(struct device *cdev,
2678 struct device_attribute *attr, char *buf)
2679 {
2680 struct Scsi_Host *shost = class_to_shost(cdev);
2681 struct megasas_instance *instance =
2682 (struct megasas_instance *) shost->hostdata;
2683
2684 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)
2685 ((instance->fw_crash_buffer_size) * 1024 * 1024)/PAGE_SIZE);
2686 }
2687
2688 static ssize_t
2689 megasas_fw_crash_state_store(struct device *cdev,
2690 struct device_attribute *attr, const char *buf, size_t count)
2691 {
2692 struct Scsi_Host *shost = class_to_shost(cdev);
2693 struct megasas_instance *instance =
2694 (struct megasas_instance *) shost->hostdata;
2695 int val = 0;
2696 unsigned long flags;
2697
2698 if (kstrtoint(buf, 0, &val) != 0)
2699 return -EINVAL;
2700
2701 if ((val <= AVAILABLE || val > COPY_ERROR)) {
2702 dev_err(&instance->pdev->dev, "application updates invalid "
2703 "firmware crash state\n");
2704 return -EINVAL;
2705 }
2706
2707 instance->fw_crash_state = val;
2708
2709 if ((val == COPIED) || (val == COPY_ERROR)) {
2710 spin_lock_irqsave(&instance->crashdump_lock, flags);
2711 megasas_free_host_crash_buffer(instance);
2712 spin_unlock_irqrestore(&instance->crashdump_lock, flags);
2713 if (val == COPY_ERROR)
2714 dev_info(&instance->pdev->dev, "application failed to "
2715 "copy Firmware crash dump\n");
2716 else
2717 dev_info(&instance->pdev->dev, "Firmware crash dump "
2718 "copied successfully\n");
2719 }
2720 return strlen(buf);
2721 }
2722
2723 static ssize_t
2724 megasas_fw_crash_state_show(struct device *cdev,
2725 struct device_attribute *attr, char *buf)
2726 {
2727 struct Scsi_Host *shost = class_to_shost(cdev);
2728 struct megasas_instance *instance =
2729 (struct megasas_instance *) shost->hostdata;
2730 return snprintf(buf, PAGE_SIZE, "%d\n", instance->fw_crash_state);
2731 }
2732
2733 static ssize_t
2734 megasas_page_size_show(struct device *cdev,
2735 struct device_attribute *attr, char *buf)
2736 {
2737 return snprintf(buf, PAGE_SIZE, "%ld\n", (unsigned long)PAGE_SIZE - 1);
2738 }
2739
2740 static DEVICE_ATTR(fw_crash_buffer, S_IRUGO | S_IWUSR,
2741 megasas_fw_crash_buffer_show, megasas_fw_crash_buffer_store);
2742 static DEVICE_ATTR(fw_crash_buffer_size, S_IRUGO,
2743 megasas_fw_crash_buffer_size_show, NULL);
2744 static DEVICE_ATTR(fw_crash_state, S_IRUGO | S_IWUSR,
2745 megasas_fw_crash_state_show, megasas_fw_crash_state_store);
2746 static DEVICE_ATTR(page_size, S_IRUGO,
2747 megasas_page_size_show, NULL);
2748
2749 struct device_attribute *megaraid_host_attrs[] = {
2750 &dev_attr_fw_crash_buffer_size,
2751 &dev_attr_fw_crash_buffer,
2752 &dev_attr_fw_crash_state,
2753 &dev_attr_page_size,
2754 NULL,
2755 };
2756
2757 /*
2758 * Scsi host template for megaraid_sas driver
2759 */
2760 static struct scsi_host_template megasas_template = {
2761
2762 .module = THIS_MODULE,
2763 .name = "Avago SAS based MegaRAID driver",
2764 .proc_name = "megaraid_sas",
2765 .slave_configure = megasas_slave_configure,
2766 .slave_alloc = megasas_slave_alloc,
2767 .queuecommand = megasas_queue_command,
2768 .eh_device_reset_handler = megasas_reset_device,
2769 .eh_bus_reset_handler = megasas_reset_bus_host,
2770 .eh_host_reset_handler = megasas_reset_bus_host,
2771 .eh_timed_out = megasas_reset_timer,
2772 .shost_attrs = megaraid_host_attrs,
2773 .bios_param = megasas_bios_param,
2774 .use_clustering = ENABLE_CLUSTERING,
2775 .change_queue_depth = scsi_change_queue_depth,
2776 .no_write_same = 1,
2777 };
2778
2779 /**
2780 * megasas_complete_int_cmd - Completes an internal command
2781 * @instance: Adapter soft state
2782 * @cmd: Command to be completed
2783 *
2784 * The megasas_issue_blocked_cmd() function waits for a command to complete
2785 * after it issues a command. This function wakes up that waiting routine by
2786 * calling wake_up() on the wait queue.
2787 */
2788 static void
2789 megasas_complete_int_cmd(struct megasas_instance *instance,
2790 struct megasas_cmd *cmd)
2791 {
2792 cmd->cmd_status_drv = cmd->frame->io.cmd_status;
2793 wake_up(&instance->int_cmd_wait_q);
2794 }
2795
2796 /**
2797 * megasas_complete_abort - Completes aborting a command
2798 * @instance: Adapter soft state
2799 * @cmd: Cmd that was issued to abort another cmd
2800 *
2801 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
2802 * after it issues an abort on a previously issued command. This function
2803 * wakes up all functions waiting on the same wait queue.
2804 */
2805 static void
2806 megasas_complete_abort(struct megasas_instance *instance,
2807 struct megasas_cmd *cmd)
2808 {
2809 if (cmd->sync_cmd) {
2810 cmd->sync_cmd = 0;
2811 cmd->cmd_status_drv = 0;
2812 wake_up(&instance->abort_cmd_wait_q);
2813 }
2814
2815 return;
2816 }
2817
2818 /**
2819 * megasas_complete_cmd - Completes a command
2820 * @instance: Adapter soft state
2821 * @cmd: Command to be completed
2822 * @alt_status: If non-zero, use this value as status to
2823 * SCSI mid-layer instead of the value returned
2824 * by the FW. This should be used if caller wants
2825 * an alternate status (as in the case of aborted
2826 * commands)
2827 */
2828 void
2829 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
2830 u8 alt_status)
2831 {
2832 int exception = 0;
2833 struct megasas_header *hdr = &cmd->frame->hdr;
2834 unsigned long flags;
2835 struct fusion_context *fusion = instance->ctrl_context;
2836 u32 opcode;
2837
2838 /* flag for the retry reset */
2839 cmd->retry_for_fw_reset = 0;
2840
2841 if (cmd->scmd)
2842 cmd->scmd->SCp.ptr = NULL;
2843
2844 switch (hdr->cmd) {
2845 case MFI_CMD_INVALID:
2846 /* Some older 1068 controller FW may keep a pended
2847 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
2848 when booting the kdump kernel. Ignore this command to
2849 prevent a kernel panic on shutdown of the kdump kernel. */
2850 printk(KERN_WARNING "megaraid_sas: MFI_CMD_INVALID command "
2851 "completed.\n");
2852 printk(KERN_WARNING "megaraid_sas: If you have a controller "
2853 "other than PERC5, please upgrade your firmware.\n");
2854 break;
2855 case MFI_CMD_PD_SCSI_IO:
2856 case MFI_CMD_LD_SCSI_IO:
2857
2858 /*
2859 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
2860 * issued either through an IO path or an IOCTL path. If it
2861 * was via IOCTL, we will send it to internal completion.
2862 */
2863 if (cmd->sync_cmd) {
2864 cmd->sync_cmd = 0;
2865 megasas_complete_int_cmd(instance, cmd);
2866 break;
2867 }
2868
2869 case MFI_CMD_LD_READ:
2870 case MFI_CMD_LD_WRITE:
2871
2872 if (alt_status) {
2873 cmd->scmd->result = alt_status << 16;
2874 exception = 1;
2875 }
2876
2877 if (exception) {
2878
2879 atomic_dec(&instance->fw_outstanding);
2880
2881 scsi_dma_unmap(cmd->scmd);
2882 cmd->scmd->scsi_done(cmd->scmd);
2883 megasas_return_cmd(instance, cmd);
2884
2885 break;
2886 }
2887
2888 switch (hdr->cmd_status) {
2889
2890 case MFI_STAT_OK:
2891 cmd->scmd->result = DID_OK << 16;
2892 break;
2893
2894 case MFI_STAT_SCSI_IO_FAILED:
2895 case MFI_STAT_LD_INIT_IN_PROGRESS:
2896 cmd->scmd->result =
2897 (DID_ERROR << 16) | hdr->scsi_status;
2898 break;
2899
2900 case MFI_STAT_SCSI_DONE_WITH_ERROR:
2901
2902 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
2903
2904 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
2905 memset(cmd->scmd->sense_buffer, 0,
2906 SCSI_SENSE_BUFFERSIZE);
2907 memcpy(cmd->scmd->sense_buffer, cmd->sense,
2908 hdr->sense_len);
2909
2910 cmd->scmd->result |= DRIVER_SENSE << 24;
2911 }
2912
2913 break;
2914
2915 case MFI_STAT_LD_OFFLINE:
2916 case MFI_STAT_DEVICE_NOT_FOUND:
2917 cmd->scmd->result = DID_BAD_TARGET << 16;
2918 break;
2919
2920 default:
2921 printk(KERN_DEBUG "megasas: MFI FW status %#x\n",
2922 hdr->cmd_status);
2923 cmd->scmd->result = DID_ERROR << 16;
2924 break;
2925 }
2926
2927 atomic_dec(&instance->fw_outstanding);
2928
2929 scsi_dma_unmap(cmd->scmd);
2930 cmd->scmd->scsi_done(cmd->scmd);
2931 megasas_return_cmd(instance, cmd);
2932
2933 break;
2934
2935 case MFI_CMD_SMP:
2936 case MFI_CMD_STP:
2937 case MFI_CMD_DCMD:
2938 opcode = le32_to_cpu(cmd->frame->dcmd.opcode);
2939 /* Check for LD map update */
2940 if ((opcode == MR_DCMD_LD_MAP_GET_INFO)
2941 && (cmd->frame->dcmd.mbox.b[1] == 1)) {
2942 fusion->fast_path_io = 0;
2943 spin_lock_irqsave(instance->host->host_lock, flags);
2944 if (cmd->frame->hdr.cmd_status != 0) {
2945 if (cmd->frame->hdr.cmd_status !=
2946 MFI_STAT_NOT_FOUND)
2947 printk(KERN_WARNING "megasas: map sync"
2948 "failed, status = 0x%x.\n",
2949 cmd->frame->hdr.cmd_status);
2950 else {
2951 megasas_return_cmd(instance, cmd);
2952 spin_unlock_irqrestore(
2953 instance->host->host_lock,
2954 flags);
2955 break;
2956 }
2957 } else
2958 instance->map_id++;
2959 megasas_return_cmd(instance, cmd);
2960
2961 /*
2962 * Set fast path IO to ZERO.
2963 * Validate Map will set proper value.
2964 * Meanwhile all IOs will go as LD IO.
2965 */
2966 if (MR_ValidateMapInfo(instance))
2967 fusion->fast_path_io = 1;
2968 else
2969 fusion->fast_path_io = 0;
2970 megasas_sync_map_info(instance);
2971 spin_unlock_irqrestore(instance->host->host_lock,
2972 flags);
2973 break;
2974 }
2975 if (opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
2976 opcode == MR_DCMD_CTRL_EVENT_GET) {
2977 spin_lock_irqsave(&poll_aen_lock, flags);
2978 megasas_poll_wait_aen = 0;
2979 spin_unlock_irqrestore(&poll_aen_lock, flags);
2980 }
2981
2982 /*
2983 * See if got an event notification
2984 */
2985 if (opcode == MR_DCMD_CTRL_EVENT_WAIT)
2986 megasas_service_aen(instance, cmd);
2987 else
2988 megasas_complete_int_cmd(instance, cmd);
2989
2990 break;
2991
2992 case MFI_CMD_ABORT:
2993 /*
2994 * Cmd issued to abort another cmd returned
2995 */
2996 megasas_complete_abort(instance, cmd);
2997 break;
2998
2999 default:
3000 printk("megasas: Unknown command completed! [0x%X]\n",
3001 hdr->cmd);
3002 break;
3003 }
3004 }
3005
3006 /**
3007 * megasas_issue_pending_cmds_again - issue all pending cmds
3008 * in FW again because of the fw reset
3009 * @instance: Adapter soft state
3010 */
3011 static inline void
3012 megasas_issue_pending_cmds_again(struct megasas_instance *instance)
3013 {
3014 struct megasas_cmd *cmd;
3015 struct list_head clist_local;
3016 union megasas_evt_class_locale class_locale;
3017 unsigned long flags;
3018 u32 seq_num;
3019
3020 INIT_LIST_HEAD(&clist_local);
3021 spin_lock_irqsave(&instance->hba_lock, flags);
3022 list_splice_init(&instance->internal_reset_pending_q, &clist_local);
3023 spin_unlock_irqrestore(&instance->hba_lock, flags);
3024
3025 while (!list_empty(&clist_local)) {
3026 cmd = list_entry((&clist_local)->next,
3027 struct megasas_cmd, list);
3028 list_del_init(&cmd->list);
3029
3030 if (cmd->sync_cmd || cmd->scmd) {
3031 printk(KERN_NOTICE "megaraid_sas: command %p, %p:%d"
3032 "detected to be pending while HBA reset.\n",
3033 cmd, cmd->scmd, cmd->sync_cmd);
3034
3035 cmd->retry_for_fw_reset++;
3036
3037 if (cmd->retry_for_fw_reset == 3) {
3038 printk(KERN_NOTICE "megaraid_sas: cmd %p, %p:%d"
3039 "was tried multiple times during reset."
3040 "Shutting down the HBA\n",
3041 cmd, cmd->scmd, cmd->sync_cmd);
3042 instance->instancet->disable_intr(instance);
3043 atomic_set(&instance->fw_reset_no_pci_access, 1);
3044 megaraid_sas_kill_hba(instance);
3045 return;
3046 }
3047 }
3048
3049 if (cmd->sync_cmd == 1) {
3050 if (cmd->scmd) {
3051 printk(KERN_NOTICE "megaraid_sas: unexpected"
3052 "cmd attached to internal command!\n");
3053 }
3054 printk(KERN_NOTICE "megasas: %p synchronous cmd"
3055 "on the internal reset queue,"
3056 "issue it again.\n", cmd);
3057 cmd->cmd_status_drv = MFI_STAT_INVALID_STATUS;
3058 instance->instancet->fire_cmd(instance,
3059 cmd->frame_phys_addr ,
3060 0, instance->reg_set);
3061 } else if (cmd->scmd) {
3062 printk(KERN_NOTICE "megasas: %p scsi cmd [%02x]"
3063 "detected on the internal queue, issue again.\n",
3064 cmd, cmd->scmd->cmnd[0]);
3065
3066 atomic_inc(&instance->fw_outstanding);
3067 instance->instancet->fire_cmd(instance,
3068 cmd->frame_phys_addr,
3069 cmd->frame_count-1, instance->reg_set);
3070 } else {
3071 printk(KERN_NOTICE "megasas: %p unexpected cmd on the"
3072 "internal reset defer list while re-issue!!\n",
3073 cmd);
3074 }
3075 }
3076
3077 if (instance->aen_cmd) {
3078 printk(KERN_NOTICE "megaraid_sas: aen_cmd in def process\n");
3079 megasas_return_cmd(instance, instance->aen_cmd);
3080
3081 instance->aen_cmd = NULL;
3082 }
3083
3084 /*
3085 * Initiate AEN (Asynchronous Event Notification)
3086 */
3087 seq_num = instance->last_seq_num;
3088 class_locale.members.reserved = 0;
3089 class_locale.members.locale = MR_EVT_LOCALE_ALL;
3090 class_locale.members.class = MR_EVT_CLASS_DEBUG;
3091
3092 megasas_register_aen(instance, seq_num, class_locale.word);
3093 }
3094
3095 /**
3096 * Move the internal reset pending commands to a deferred queue.
3097 *
3098 * We move the commands pending at internal reset time to a
3099 * pending queue. This queue would be flushed after successful
3100 * completion of the internal reset sequence. if the internal reset
3101 * did not complete in time, the kernel reset handler would flush
3102 * these commands.
3103 **/
3104 static void
3105 megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
3106 {
3107 struct megasas_cmd *cmd;
3108 int i;
3109 u32 max_cmd = instance->max_fw_cmds;
3110 u32 defer_index;
3111 unsigned long flags;
3112
3113 defer_index = 0;
3114 spin_lock_irqsave(&instance->mfi_pool_lock, flags);
3115 for (i = 0; i < max_cmd; i++) {
3116 cmd = instance->cmd_list[i];
3117 if (cmd->sync_cmd == 1 || cmd->scmd) {
3118 printk(KERN_NOTICE "megasas: moving cmd[%d]:%p:%d:%p"
3119 "on the defer queue as internal\n",
3120 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
3121
3122 if (!list_empty(&cmd->list)) {
3123 printk(KERN_NOTICE "megaraid_sas: ERROR while"
3124 " moving this cmd:%p, %d %p, it was"
3125 "discovered on some list?\n",
3126 cmd, cmd->sync_cmd, cmd->scmd);
3127
3128 list_del_init(&cmd->list);
3129 }
3130 defer_index++;
3131 list_add_tail(&cmd->list,
3132 &instance->internal_reset_pending_q);
3133 }
3134 }
3135 spin_unlock_irqrestore(&instance->mfi_pool_lock, flags);
3136 }
3137
3138
3139 static void
3140 process_fw_state_change_wq(struct work_struct *work)
3141 {
3142 struct megasas_instance *instance =
3143 container_of(work, struct megasas_instance, work_init);
3144 u32 wait;
3145 unsigned long flags;
3146
3147 if (instance->adprecovery != MEGASAS_ADPRESET_SM_INFAULT) {
3148 printk(KERN_NOTICE "megaraid_sas: error, recovery st %x \n",
3149 instance->adprecovery);
3150 return ;
3151 }
3152
3153 if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) {
3154 printk(KERN_NOTICE "megaraid_sas: FW detected to be in fault"
3155 "state, restarting it...\n");
3156
3157 instance->instancet->disable_intr(instance);
3158 atomic_set(&instance->fw_outstanding, 0);
3159
3160 atomic_set(&instance->fw_reset_no_pci_access, 1);
3161 instance->instancet->adp_reset(instance, instance->reg_set);
3162 atomic_set(&instance->fw_reset_no_pci_access, 0 );
3163
3164 printk(KERN_NOTICE "megaraid_sas: FW restarted successfully,"
3165 "initiating next stage...\n");
3166
3167 printk(KERN_NOTICE "megaraid_sas: HBA recovery state machine,"
3168 "state 2 starting...\n");
3169
3170 /*waitting for about 20 second before start the second init*/
3171 for (wait = 0; wait < 30; wait++) {
3172 msleep(1000);
3173 }
3174
3175 if (megasas_transition_to_ready(instance, 1)) {
3176 printk(KERN_NOTICE "megaraid_sas:adapter not ready\n");
3177
3178 atomic_set(&instance->fw_reset_no_pci_access, 1);
3179 megaraid_sas_kill_hba(instance);
3180 return ;
3181 }
3182
3183 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
3184 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
3185 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
3186 ) {
3187 *instance->consumer = *instance->producer;
3188 } else {
3189 *instance->consumer = 0;
3190 *instance->producer = 0;
3191 }
3192
3193 megasas_issue_init_mfi(instance);
3194
3195 spin_lock_irqsave(&instance->hba_lock, flags);
3196 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
3197 spin_unlock_irqrestore(&instance->hba_lock, flags);
3198 instance->instancet->enable_intr(instance);
3199
3200 megasas_issue_pending_cmds_again(instance);
3201 instance->issuepend_done = 1;
3202 }
3203 return ;
3204 }
3205
3206 /**
3207 * megasas_deplete_reply_queue - Processes all completed commands
3208 * @instance: Adapter soft state
3209 * @alt_status: Alternate status to be returned to
3210 * SCSI mid-layer instead of the status
3211 * returned by the FW
3212 * Note: this must be called with hba lock held
3213 */
3214 static int
3215 megasas_deplete_reply_queue(struct megasas_instance *instance,
3216 u8 alt_status)
3217 {
3218 u32 mfiStatus;
3219 u32 fw_state;
3220
3221 if ((mfiStatus = instance->instancet->check_reset(instance,
3222 instance->reg_set)) == 1) {
3223 return IRQ_HANDLED;
3224 }
3225
3226 if ((mfiStatus = instance->instancet->clear_intr(
3227 instance->reg_set)
3228 ) == 0) {
3229 /* Hardware may not set outbound_intr_status in MSI-X mode */
3230 if (!instance->msix_vectors)
3231 return IRQ_NONE;
3232 }
3233
3234 instance->mfiStatus = mfiStatus;
3235
3236 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
3237 fw_state = instance->instancet->read_fw_status_reg(
3238 instance->reg_set) & MFI_STATE_MASK;
3239
3240 if (fw_state != MFI_STATE_FAULT) {
3241 printk(KERN_NOTICE "megaraid_sas: fw state:%x\n",
3242 fw_state);
3243 }
3244
3245 if ((fw_state == MFI_STATE_FAULT) &&
3246 (instance->disableOnlineCtrlReset == 0)) {
3247 printk(KERN_NOTICE "megaraid_sas: wait adp restart\n");
3248
3249 if ((instance->pdev->device ==
3250 PCI_DEVICE_ID_LSI_SAS1064R) ||
3251 (instance->pdev->device ==
3252 PCI_DEVICE_ID_DELL_PERC5) ||
3253 (instance->pdev->device ==
3254 PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
3255
3256 *instance->consumer =
3257 cpu_to_le32(MEGASAS_ADPRESET_INPROG_SIGN);
3258 }
3259
3260
3261 instance->instancet->disable_intr(instance);
3262 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
3263 instance->issuepend_done = 0;
3264
3265 atomic_set(&instance->fw_outstanding, 0);
3266 megasas_internal_reset_defer_cmds(instance);
3267
3268 printk(KERN_NOTICE "megasas: fwState=%x, stage:%d\n",
3269 fw_state, instance->adprecovery);
3270
3271 schedule_work(&instance->work_init);
3272 return IRQ_HANDLED;
3273
3274 } else {
3275 printk(KERN_NOTICE "megasas: fwstate:%x, dis_OCR=%x\n",
3276 fw_state, instance->disableOnlineCtrlReset);
3277 }
3278 }
3279
3280 tasklet_schedule(&instance->isr_tasklet);
3281 return IRQ_HANDLED;
3282 }
3283 /**
3284 * megasas_isr - isr entry point
3285 */
3286 static irqreturn_t megasas_isr(int irq, void *devp)
3287 {
3288 struct megasas_irq_context *irq_context = devp;
3289 struct megasas_instance *instance = irq_context->instance;
3290 unsigned long flags;
3291 irqreturn_t rc;
3292
3293 if (atomic_read(&instance->fw_reset_no_pci_access))
3294 return IRQ_HANDLED;
3295
3296 spin_lock_irqsave(&instance->hba_lock, flags);
3297 rc = megasas_deplete_reply_queue(instance, DID_OK);
3298 spin_unlock_irqrestore(&instance->hba_lock, flags);
3299
3300 return rc;
3301 }
3302
3303 /**
3304 * megasas_transition_to_ready - Move the FW to READY state
3305 * @instance: Adapter soft state
3306 *
3307 * During the initialization, FW passes can potentially be in any one of
3308 * several possible states. If the FW in operational, waiting-for-handshake
3309 * states, driver must take steps to bring it to ready state. Otherwise, it
3310 * has to wait for the ready state.
3311 */
3312 int
3313 megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
3314 {
3315 int i;
3316 u8 max_wait;
3317 u32 fw_state;
3318 u32 cur_state;
3319 u32 abs_state, curr_abs_state;
3320
3321 abs_state = instance->instancet->read_fw_status_reg(instance->reg_set);
3322 fw_state = abs_state & MFI_STATE_MASK;
3323
3324 if (fw_state != MFI_STATE_READY)
3325 printk(KERN_INFO "megasas: Waiting for FW to come to ready"
3326 " state\n");
3327
3328 while (fw_state != MFI_STATE_READY) {
3329
3330 switch (fw_state) {
3331
3332 case MFI_STATE_FAULT:
3333 printk(KERN_DEBUG "megasas: FW in FAULT state!!\n");
3334 if (ocr) {
3335 max_wait = MEGASAS_RESET_WAIT_TIME;
3336 cur_state = MFI_STATE_FAULT;
3337 break;
3338 } else
3339 return -ENODEV;
3340
3341 case MFI_STATE_WAIT_HANDSHAKE:
3342 /*
3343 * Set the CLR bit in inbound doorbell
3344 */
3345 if ((instance->pdev->device ==
3346 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3347 (instance->pdev->device ==
3348 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3349 (instance->pdev->device ==
3350 PCI_DEVICE_ID_LSI_FUSION) ||
3351 (instance->pdev->device ==
3352 PCI_DEVICE_ID_LSI_PLASMA) ||
3353 (instance->pdev->device ==
3354 PCI_DEVICE_ID_LSI_INVADER) ||
3355 (instance->pdev->device ==
3356 PCI_DEVICE_ID_LSI_FURY)) {
3357 writel(
3358 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
3359 &instance->reg_set->doorbell);
3360 } else {
3361 writel(
3362 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
3363 &instance->reg_set->inbound_doorbell);
3364 }
3365
3366 max_wait = MEGASAS_RESET_WAIT_TIME;
3367 cur_state = MFI_STATE_WAIT_HANDSHAKE;
3368 break;
3369
3370 case MFI_STATE_BOOT_MESSAGE_PENDING:
3371 if ((instance->pdev->device ==
3372 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3373 (instance->pdev->device ==
3374 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3375 (instance->pdev->device ==
3376 PCI_DEVICE_ID_LSI_FUSION) ||
3377 (instance->pdev->device ==
3378 PCI_DEVICE_ID_LSI_PLASMA) ||
3379 (instance->pdev->device ==
3380 PCI_DEVICE_ID_LSI_INVADER) ||
3381 (instance->pdev->device ==
3382 PCI_DEVICE_ID_LSI_FURY)) {
3383 writel(MFI_INIT_HOTPLUG,
3384 &instance->reg_set->doorbell);
3385 } else
3386 writel(MFI_INIT_HOTPLUG,
3387 &instance->reg_set->inbound_doorbell);
3388
3389 max_wait = MEGASAS_RESET_WAIT_TIME;
3390 cur_state = MFI_STATE_BOOT_MESSAGE_PENDING;
3391 break;
3392
3393 case MFI_STATE_OPERATIONAL:
3394 /*
3395 * Bring it to READY state; assuming max wait 10 secs
3396 */
3397 instance->instancet->disable_intr(instance);
3398 if ((instance->pdev->device ==
3399 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3400 (instance->pdev->device ==
3401 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
3402 (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 writel(MFI_RESET_FLAGS,
3411 &instance->reg_set->doorbell);
3412 if ((instance->pdev->device ==
3413 PCI_DEVICE_ID_LSI_FUSION) ||
3414 (instance->pdev->device ==
3415 PCI_DEVICE_ID_LSI_PLASMA) ||
3416 (instance->pdev->device ==
3417 PCI_DEVICE_ID_LSI_INVADER) ||
3418 (instance->pdev->device ==
3419 PCI_DEVICE_ID_LSI_FURY)) {
3420 for (i = 0; i < (10 * 1000); i += 20) {
3421 if (readl(
3422 &instance->
3423 reg_set->
3424 doorbell) & 1)
3425 msleep(20);
3426 else
3427 break;
3428 }
3429 }
3430 } else
3431 writel(MFI_RESET_FLAGS,
3432 &instance->reg_set->inbound_doorbell);
3433
3434 max_wait = MEGASAS_RESET_WAIT_TIME;
3435 cur_state = MFI_STATE_OPERATIONAL;
3436 break;
3437
3438 case MFI_STATE_UNDEFINED:
3439 /*
3440 * This state should not last for more than 2 seconds
3441 */
3442 max_wait = MEGASAS_RESET_WAIT_TIME;
3443 cur_state = MFI_STATE_UNDEFINED;
3444 break;
3445
3446 case MFI_STATE_BB_INIT:
3447 max_wait = MEGASAS_RESET_WAIT_TIME;
3448 cur_state = MFI_STATE_BB_INIT;
3449 break;
3450
3451 case MFI_STATE_FW_INIT:
3452 max_wait = MEGASAS_RESET_WAIT_TIME;
3453 cur_state = MFI_STATE_FW_INIT;
3454 break;
3455
3456 case MFI_STATE_FW_INIT_2:
3457 max_wait = MEGASAS_RESET_WAIT_TIME;
3458 cur_state = MFI_STATE_FW_INIT_2;
3459 break;
3460
3461 case MFI_STATE_DEVICE_SCAN:
3462 max_wait = MEGASAS_RESET_WAIT_TIME;
3463 cur_state = MFI_STATE_DEVICE_SCAN;
3464 break;
3465
3466 case MFI_STATE_FLUSH_CACHE:
3467 max_wait = MEGASAS_RESET_WAIT_TIME;
3468 cur_state = MFI_STATE_FLUSH_CACHE;
3469 break;
3470
3471 default:
3472 printk(KERN_DEBUG "megasas: Unknown state 0x%x\n",
3473 fw_state);
3474 return -ENODEV;
3475 }
3476
3477 /*
3478 * The cur_state should not last for more than max_wait secs
3479 */
3480 for (i = 0; i < (max_wait * 1000); i++) {
3481 curr_abs_state = instance->instancet->
3482 read_fw_status_reg(instance->reg_set);
3483
3484 if (abs_state == curr_abs_state) {
3485 msleep(1);
3486 } else
3487 break;
3488 }
3489
3490 /*
3491 * Return error if fw_state hasn't changed after max_wait
3492 */
3493 if (curr_abs_state == abs_state) {
3494 printk(KERN_DEBUG "FW state [%d] hasn't changed "
3495 "in %d secs\n", fw_state, max_wait);
3496 return -ENODEV;
3497 }
3498
3499 abs_state = curr_abs_state;
3500 fw_state = curr_abs_state & MFI_STATE_MASK;
3501 }
3502 printk(KERN_INFO "megasas: FW now in Ready state\n");
3503
3504 return 0;
3505 }
3506
3507 /**
3508 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool
3509 * @instance: Adapter soft state
3510 */
3511 static void megasas_teardown_frame_pool(struct megasas_instance *instance)
3512 {
3513 int i;
3514 u32 max_cmd = instance->max_mfi_cmds;
3515 struct megasas_cmd *cmd;
3516
3517 if (!instance->frame_dma_pool)
3518 return;
3519
3520 /*
3521 * Return all frames to pool
3522 */
3523 for (i = 0; i < max_cmd; i++) {
3524
3525 cmd = instance->cmd_list[i];
3526
3527 if (cmd->frame)
3528 pci_pool_free(instance->frame_dma_pool, cmd->frame,
3529 cmd->frame_phys_addr);
3530
3531 if (cmd->sense)
3532 pci_pool_free(instance->sense_dma_pool, cmd->sense,
3533 cmd->sense_phys_addr);
3534 }
3535
3536 /*
3537 * Now destroy the pool itself
3538 */
3539 pci_pool_destroy(instance->frame_dma_pool);
3540 pci_pool_destroy(instance->sense_dma_pool);
3541
3542 instance->frame_dma_pool = NULL;
3543 instance->sense_dma_pool = NULL;
3544 }
3545
3546 /**
3547 * megasas_create_frame_pool - Creates DMA pool for cmd frames
3548 * @instance: Adapter soft state
3549 *
3550 * Each command packet has an embedded DMA memory buffer that is used for
3551 * filling MFI frame and the SG list that immediately follows the frame. This
3552 * function creates those DMA memory buffers for each command packet by using
3553 * PCI pool facility.
3554 */
3555 static int megasas_create_frame_pool(struct megasas_instance *instance)
3556 {
3557 int i;
3558 u32 max_cmd;
3559 u32 sge_sz;
3560 u32 total_sz;
3561 u32 frame_count;
3562 struct megasas_cmd *cmd;
3563
3564 max_cmd = instance->max_mfi_cmds;
3565
3566 /*
3567 * Size of our frame is 64 bytes for MFI frame, followed by max SG
3568 * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer
3569 */
3570 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
3571 sizeof(struct megasas_sge32);
3572
3573 if (instance->flag_ieee) {
3574 sge_sz = sizeof(struct megasas_sge_skinny);
3575 }
3576
3577 /*
3578 * For MFI controllers.
3579 * max_num_sge = 60
3580 * max_sge_sz = 16 byte (sizeof megasas_sge_skinny)
3581 * Total 960 byte (15 MFI frame of 64 byte)
3582 *
3583 * Fusion adapter require only 3 extra frame.
3584 * max_num_sge = 16 (defined as MAX_IOCTL_SGE)
3585 * max_sge_sz = 12 byte (sizeof megasas_sge64)
3586 * Total 192 byte (3 MFI frame of 64 byte)
3587 */
3588 frame_count = instance->ctrl_context ? (3 + 1) : (15 + 1);
3589 total_sz = MEGAMFI_FRAME_SIZE * frame_count;
3590 /*
3591 * Use DMA pool facility provided by PCI layer
3592 */
3593 instance->frame_dma_pool = pci_pool_create("megasas frame pool",
3594 instance->pdev, total_sz, 256, 0);
3595
3596 if (!instance->frame_dma_pool) {
3597 printk(KERN_DEBUG "megasas: failed to setup frame pool\n");
3598 return -ENOMEM;
3599 }
3600
3601 instance->sense_dma_pool = pci_pool_create("megasas sense pool",
3602 instance->pdev, 128, 4, 0);
3603
3604 if (!instance->sense_dma_pool) {
3605 printk(KERN_DEBUG "megasas: failed to setup sense pool\n");
3606
3607 pci_pool_destroy(instance->frame_dma_pool);
3608 instance->frame_dma_pool = NULL;
3609
3610 return -ENOMEM;
3611 }
3612
3613 /*
3614 * Allocate and attach a frame to each of the commands in cmd_list.
3615 * By making cmd->index as the context instead of the &cmd, we can
3616 * always use 32bit context regardless of the architecture
3617 */
3618 for (i = 0; i < max_cmd; i++) {
3619
3620 cmd = instance->cmd_list[i];
3621
3622 cmd->frame = pci_pool_alloc(instance->frame_dma_pool,
3623 GFP_KERNEL, &cmd->frame_phys_addr);
3624
3625 cmd->sense = pci_pool_alloc(instance->sense_dma_pool,
3626 GFP_KERNEL, &cmd->sense_phys_addr);
3627
3628 /*
3629 * megasas_teardown_frame_pool() takes care of freeing
3630 * whatever has been allocated
3631 */
3632 if (!cmd->frame || !cmd->sense) {
3633 printk(KERN_DEBUG "megasas: pci_pool_alloc failed \n");
3634 megasas_teardown_frame_pool(instance);
3635 return -ENOMEM;
3636 }
3637
3638 memset(cmd->frame, 0, total_sz);
3639 cmd->frame->io.context = cpu_to_le32(cmd->index);
3640 cmd->frame->io.pad_0 = 0;
3641 if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) &&
3642 (instance->pdev->device != PCI_DEVICE_ID_LSI_PLASMA) &&
3643 (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) &&
3644 (instance->pdev->device != PCI_DEVICE_ID_LSI_FURY) &&
3645 (reset_devices))
3646 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
3647 }
3648
3649 return 0;
3650 }
3651
3652 /**
3653 * megasas_free_cmds - Free all the cmds in the free cmd pool
3654 * @instance: Adapter soft state
3655 */
3656 void megasas_free_cmds(struct megasas_instance *instance)
3657 {
3658 int i;
3659 /* First free the MFI frame pool */
3660 megasas_teardown_frame_pool(instance);
3661
3662 /* Free all the commands in the cmd_list */
3663 for (i = 0; i < instance->max_mfi_cmds; i++)
3664
3665 kfree(instance->cmd_list[i]);
3666
3667 /* Free the cmd_list buffer itself */
3668 kfree(instance->cmd_list);
3669 instance->cmd_list = NULL;
3670
3671 INIT_LIST_HEAD(&instance->cmd_pool);
3672 }
3673
3674 /**
3675 * megasas_alloc_cmds - Allocates the command packets
3676 * @instance: Adapter soft state
3677 *
3678 * Each command that is issued to the FW, whether IO commands from the OS or
3679 * internal commands like IOCTLs, are wrapped in local data structure called
3680 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
3681 * the FW.
3682 *
3683 * Each frame has a 32-bit field called context (tag). This context is used
3684 * to get back the megasas_cmd from the frame when a frame gets completed in
3685 * the ISR. Typically the address of the megasas_cmd itself would be used as
3686 * the context. But we wanted to keep the differences between 32 and 64 bit
3687 * systems to the mininum. We always use 32 bit integers for the context. In
3688 * this driver, the 32 bit values are the indices into an array cmd_list.
3689 * This array is used only to look up the megasas_cmd given the context. The
3690 * free commands themselves are maintained in a linked list called cmd_pool.
3691 */
3692 int megasas_alloc_cmds(struct megasas_instance *instance)
3693 {
3694 int i;
3695 int j;
3696 u32 max_cmd;
3697 struct megasas_cmd *cmd;
3698 struct fusion_context *fusion;
3699
3700 fusion = instance->ctrl_context;
3701 max_cmd = instance->max_mfi_cmds;
3702
3703 /*
3704 * instance->cmd_list is an array of struct megasas_cmd pointers.
3705 * Allocate the dynamic array first and then allocate individual
3706 * commands.
3707 */
3708 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
3709
3710 if (!instance->cmd_list) {
3711 printk(KERN_DEBUG "megasas: out of memory\n");
3712 return -ENOMEM;
3713 }
3714
3715 memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd);
3716
3717 for (i = 0; i < max_cmd; i++) {
3718 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
3719 GFP_KERNEL);
3720
3721 if (!instance->cmd_list[i]) {
3722
3723 for (j = 0; j < i; j++)
3724 kfree(instance->cmd_list[j]);
3725
3726 kfree(instance->cmd_list);
3727 instance->cmd_list = NULL;
3728
3729 return -ENOMEM;
3730 }
3731 }
3732
3733 for (i = 0; i < max_cmd; i++) {
3734 cmd = instance->cmd_list[i];
3735 memset(cmd, 0, sizeof(struct megasas_cmd));
3736 cmd->index = i;
3737 cmd->scmd = NULL;
3738 cmd->instance = instance;
3739
3740 list_add_tail(&cmd->list, &instance->cmd_pool);
3741 }
3742
3743 /*
3744 * Create a frame pool and assign one frame to each cmd
3745 */
3746 if (megasas_create_frame_pool(instance)) {
3747 printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n");
3748 megasas_free_cmds(instance);
3749 }
3750
3751 return 0;
3752 }
3753
3754 /*
3755 * megasas_get_pd_list_info - Returns FW's pd_list structure
3756 * @instance: Adapter soft state
3757 * @pd_list: pd_list structure
3758 *
3759 * Issues an internal command (DCMD) to get the FW's controller PD
3760 * list structure. This information is mainly used to find out SYSTEM
3761 * supported by the FW.
3762 */
3763 static int
3764 megasas_get_pd_list(struct megasas_instance *instance)
3765 {
3766 int ret = 0, pd_index = 0;
3767 struct megasas_cmd *cmd;
3768 struct megasas_dcmd_frame *dcmd;
3769 struct MR_PD_LIST *ci;
3770 struct MR_PD_ADDRESS *pd_addr;
3771 dma_addr_t ci_h = 0;
3772
3773 cmd = megasas_get_cmd(instance);
3774
3775 if (!cmd) {
3776 printk(KERN_DEBUG "megasas (get_pd_list): Failed to get cmd\n");
3777 return -ENOMEM;
3778 }
3779
3780 dcmd = &cmd->frame->dcmd;
3781
3782 ci = pci_alloc_consistent(instance->pdev,
3783 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h);
3784
3785 if (!ci) {
3786 printk(KERN_DEBUG "Failed to alloc mem for pd_list\n");
3787 megasas_return_cmd(instance, cmd);
3788 return -ENOMEM;
3789 }
3790
3791 memset(ci, 0, sizeof(*ci));
3792 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3793
3794 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
3795 dcmd->mbox.b[1] = 0;
3796 dcmd->cmd = MFI_CMD_DCMD;
3797 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
3798 dcmd->sge_count = 1;
3799 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
3800 dcmd->timeout = 0;
3801 dcmd->pad_0 = 0;
3802 dcmd->data_xfer_len = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
3803 dcmd->opcode = cpu_to_le32(MR_DCMD_PD_LIST_QUERY);
3804 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
3805 dcmd->sgl.sge32[0].length = cpu_to_le32(MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST));
3806
3807 if (instance->ctrl_context && !instance->mask_interrupts)
3808 ret = megasas_issue_blocked_cmd(instance, cmd,
3809 MEGASAS_BLOCKED_CMD_TIMEOUT);
3810 else
3811 ret = megasas_issue_polled(instance, cmd);
3812
3813 /*
3814 * the following function will get the instance PD LIST.
3815 */
3816
3817 pd_addr = ci->addr;
3818
3819 if ( ret == 0 &&
3820 (le32_to_cpu(ci->count) <
3821 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) {
3822
3823 memset(instance->local_pd_list, 0,
3824 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
3825
3826 for (pd_index = 0; pd_index < le32_to_cpu(ci->count); pd_index++) {
3827
3828 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].tid =
3829 le16_to_cpu(pd_addr->deviceId);
3830 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveType =
3831 pd_addr->scsiDevType;
3832 instance->local_pd_list[le16_to_cpu(pd_addr->deviceId)].driveState =
3833 MR_PD_STATE_SYSTEM;
3834 pd_addr++;
3835 }
3836 memcpy(instance->pd_list, instance->local_pd_list,
3837 sizeof(instance->pd_list));
3838 }
3839
3840 pci_free_consistent(instance->pdev,
3841 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
3842 ci, ci_h);
3843
3844 megasas_return_cmd(instance, cmd);
3845
3846 return ret;
3847 }
3848
3849 /*
3850 * megasas_get_ld_list_info - Returns FW's ld_list structure
3851 * @instance: Adapter soft state
3852 * @ld_list: ld_list structure
3853 *
3854 * Issues an internal command (DCMD) to get the FW's controller PD
3855 * list structure. This information is mainly used to find out SYSTEM
3856 * supported by the FW.
3857 */
3858 static int
3859 megasas_get_ld_list(struct megasas_instance *instance)
3860 {
3861 int ret = 0, ld_index = 0, ids = 0;
3862 struct megasas_cmd *cmd;
3863 struct megasas_dcmd_frame *dcmd;
3864 struct MR_LD_LIST *ci;
3865 dma_addr_t ci_h = 0;
3866 u32 ld_count;
3867
3868 cmd = megasas_get_cmd(instance);
3869
3870 if (!cmd) {
3871 printk(KERN_DEBUG "megasas_get_ld_list: Failed to get cmd\n");
3872 return -ENOMEM;
3873 }
3874
3875 dcmd = &cmd->frame->dcmd;
3876
3877 ci = pci_alloc_consistent(instance->pdev,
3878 sizeof(struct MR_LD_LIST),
3879 &ci_h);
3880
3881 if (!ci) {
3882 printk(KERN_DEBUG "Failed to alloc mem in get_ld_list\n");
3883 megasas_return_cmd(instance, cmd);
3884 return -ENOMEM;
3885 }
3886
3887 memset(ci, 0, sizeof(*ci));
3888 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3889
3890 if (instance->supportmax256vd)
3891 dcmd->mbox.b[0] = 1;
3892 dcmd->cmd = MFI_CMD_DCMD;
3893 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
3894 dcmd->sge_count = 1;
3895 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
3896 dcmd->timeout = 0;
3897 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_LIST));
3898 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_GET_LIST);
3899 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
3900 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_LIST));
3901 dcmd->pad_0 = 0;
3902
3903 if (instance->ctrl_context && !instance->mask_interrupts)
3904 ret = megasas_issue_blocked_cmd(instance, cmd,
3905 MEGASAS_BLOCKED_CMD_TIMEOUT);
3906 else
3907 ret = megasas_issue_polled(instance, cmd);
3908
3909
3910 ld_count = le32_to_cpu(ci->ldCount);
3911
3912 /* the following function will get the instance PD LIST */
3913
3914 if ((ret == 0) && (ld_count <= instance->fw_supported_vd_count)) {
3915 memset(instance->ld_ids, 0xff, MAX_LOGICAL_DRIVES_EXT);
3916
3917 for (ld_index = 0; ld_index < ld_count; ld_index++) {
3918 if (ci->ldList[ld_index].state != 0) {
3919 ids = ci->ldList[ld_index].ref.targetId;
3920 instance->ld_ids[ids] =
3921 ci->ldList[ld_index].ref.targetId;
3922 }
3923 }
3924 }
3925
3926 pci_free_consistent(instance->pdev,
3927 sizeof(struct MR_LD_LIST),
3928 ci,
3929 ci_h);
3930
3931 megasas_return_cmd(instance, cmd);
3932 return ret;
3933 }
3934
3935 /**
3936 * megasas_ld_list_query - Returns FW's ld_list structure
3937 * @instance: Adapter soft state
3938 * @ld_list: ld_list structure
3939 *
3940 * Issues an internal command (DCMD) to get the FW's controller PD
3941 * list structure. This information is mainly used to find out SYSTEM
3942 * supported by the FW.
3943 */
3944 static int
3945 megasas_ld_list_query(struct megasas_instance *instance, u8 query_type)
3946 {
3947 int ret = 0, ld_index = 0, ids = 0;
3948 struct megasas_cmd *cmd;
3949 struct megasas_dcmd_frame *dcmd;
3950 struct MR_LD_TARGETID_LIST *ci;
3951 dma_addr_t ci_h = 0;
3952 u32 tgtid_count;
3953
3954 cmd = megasas_get_cmd(instance);
3955
3956 if (!cmd) {
3957 printk(KERN_WARNING
3958 "megasas:(megasas_ld_list_query): Failed to get cmd\n");
3959 return -ENOMEM;
3960 }
3961
3962 dcmd = &cmd->frame->dcmd;
3963
3964 ci = pci_alloc_consistent(instance->pdev,
3965 sizeof(struct MR_LD_TARGETID_LIST), &ci_h);
3966
3967 if (!ci) {
3968 printk(KERN_WARNING
3969 "megasas: Failed to alloc mem for ld_list_query\n");
3970 megasas_return_cmd(instance, cmd);
3971 return -ENOMEM;
3972 }
3973
3974 memset(ci, 0, sizeof(*ci));
3975 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3976
3977 dcmd->mbox.b[0] = query_type;
3978 if (instance->supportmax256vd)
3979 dcmd->mbox.b[2] = 1;
3980
3981 dcmd->cmd = MFI_CMD_DCMD;
3982 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
3983 dcmd->sge_count = 1;
3984 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
3985 dcmd->timeout = 0;
3986 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
3987 dcmd->opcode = cpu_to_le32(MR_DCMD_LD_LIST_QUERY);
3988 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
3989 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct MR_LD_TARGETID_LIST));
3990 dcmd->pad_0 = 0;
3991
3992 if (instance->ctrl_context && !instance->mask_interrupts)
3993 ret = megasas_issue_blocked_cmd(instance, cmd,
3994 MEGASAS_BLOCKED_CMD_TIMEOUT);
3995 else
3996 ret = megasas_issue_polled(instance, cmd);
3997
3998 tgtid_count = le32_to_cpu(ci->count);
3999
4000 if ((ret == 0) && (tgtid_count <= (instance->fw_supported_vd_count))) {
4001 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
4002 for (ld_index = 0; ld_index < tgtid_count; ld_index++) {
4003 ids = ci->targetId[ld_index];
4004 instance->ld_ids[ids] = ci->targetId[ld_index];
4005 }
4006
4007 }
4008
4009 pci_free_consistent(instance->pdev, sizeof(struct MR_LD_TARGETID_LIST),
4010 ci, ci_h);
4011
4012 megasas_return_cmd(instance, cmd);
4013
4014 return ret;
4015 }
4016
4017 /*
4018 * megasas_update_ext_vd_details : Update details w.r.t Extended VD
4019 * instance : Controller's instance
4020 */
4021 static void megasas_update_ext_vd_details(struct megasas_instance *instance)
4022 {
4023 struct fusion_context *fusion;
4024 u32 old_map_sz;
4025 u32 new_map_sz;
4026
4027 fusion = instance->ctrl_context;
4028 /* For MFI based controllers return dummy success */
4029 if (!fusion)
4030 return;
4031
4032 instance->supportmax256vd =
4033 instance->ctrl_info->adapterOperations3.supportMaxExtLDs;
4034 /* Below is additional check to address future FW enhancement */
4035 if (instance->ctrl_info->max_lds > 64)
4036 instance->supportmax256vd = 1;
4037
4038 instance->drv_supported_vd_count = MEGASAS_MAX_LD_CHANNELS
4039 * MEGASAS_MAX_DEV_PER_CHANNEL;
4040 instance->drv_supported_pd_count = MEGASAS_MAX_PD_CHANNELS
4041 * MEGASAS_MAX_DEV_PER_CHANNEL;
4042 if (instance->supportmax256vd) {
4043 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES_EXT;
4044 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
4045 } else {
4046 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
4047 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
4048 }
4049
4050 dev_info(&instance->pdev->dev,
4051 "firmware type\t: %s\n",
4052 instance->supportmax256vd ? "Extended VD(240 VD)firmware" :
4053 "Legacy(64 VD) firmware");
4054
4055 old_map_sz = sizeof(struct MR_FW_RAID_MAP) +
4056 (sizeof(struct MR_LD_SPAN_MAP) *
4057 (instance->fw_supported_vd_count - 1));
4058 new_map_sz = sizeof(struct MR_FW_RAID_MAP_EXT);
4059 fusion->drv_map_sz = sizeof(struct MR_DRV_RAID_MAP) +
4060 (sizeof(struct MR_LD_SPAN_MAP) *
4061 (instance->drv_supported_vd_count - 1));
4062
4063 fusion->max_map_sz = max(old_map_sz, new_map_sz);
4064
4065
4066 if (instance->supportmax256vd)
4067 fusion->current_map_sz = new_map_sz;
4068 else
4069 fusion->current_map_sz = old_map_sz;
4070
4071 }
4072
4073 /**
4074 * megasas_get_controller_info - Returns FW's controller structure
4075 * @instance: Adapter soft state
4076 *
4077 * Issues an internal command (DCMD) to get the FW's controller structure.
4078 * This information is mainly used to find out the maximum IO transfer per
4079 * command supported by the FW.
4080 */
4081 int
4082 megasas_get_ctrl_info(struct megasas_instance *instance)
4083 {
4084 int ret = 0;
4085 struct megasas_cmd *cmd;
4086 struct megasas_dcmd_frame *dcmd;
4087 struct megasas_ctrl_info *ci;
4088 struct megasas_ctrl_info *ctrl_info;
4089 dma_addr_t ci_h = 0;
4090
4091 ctrl_info = instance->ctrl_info;
4092
4093 cmd = megasas_get_cmd(instance);
4094
4095 if (!cmd) {
4096 printk(KERN_DEBUG "megasas: Failed to get a free cmd\n");
4097 return -ENOMEM;
4098 }
4099
4100 dcmd = &cmd->frame->dcmd;
4101
4102 ci = pci_alloc_consistent(instance->pdev,
4103 sizeof(struct megasas_ctrl_info), &ci_h);
4104
4105 if (!ci) {
4106 printk(KERN_DEBUG "Failed to alloc mem for ctrl info\n");
4107 megasas_return_cmd(instance, cmd);
4108 return -ENOMEM;
4109 }
4110
4111 memset(ci, 0, sizeof(*ci));
4112 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4113
4114 dcmd->cmd = MFI_CMD_DCMD;
4115 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4116 dcmd->sge_count = 1;
4117 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4118 dcmd->timeout = 0;
4119 dcmd->pad_0 = 0;
4120 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_ctrl_info));
4121 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_GET_INFO);
4122 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(ci_h);
4123 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_ctrl_info));
4124 dcmd->mbox.b[0] = 1;
4125
4126 if (instance->ctrl_context && !instance->mask_interrupts)
4127 ret = megasas_issue_blocked_cmd(instance, cmd,
4128 MEGASAS_BLOCKED_CMD_TIMEOUT);
4129 else
4130 ret = megasas_issue_polled(instance, cmd);
4131
4132 if (!ret) {
4133 memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info));
4134 le32_to_cpus((u32 *)&ctrl_info->properties.OnOffProperties);
4135 le32_to_cpus((u32 *)&ctrl_info->adapterOperations2);
4136 le32_to_cpus((u32 *)&ctrl_info->adapterOperations3);
4137 megasas_update_ext_vd_details(instance);
4138 instance->is_imr = (ctrl_info->memory_size ? 0 : 1);
4139 dev_info(&instance->pdev->dev,
4140 "controller type\t: %s(%dMB)\n",
4141 instance->is_imr ? "iMR" : "MR",
4142 le16_to_cpu(ctrl_info->memory_size));
4143 }
4144
4145 pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info),
4146 ci, ci_h);
4147
4148 megasas_return_cmd(instance, cmd);
4149 return ret;
4150 }
4151
4152 /*
4153 * megasas_set_crash_dump_params - Sends address of crash dump DMA buffer
4154 * to firmware
4155 *
4156 * @instance: Adapter soft state
4157 * @crash_buf_state - tell FW to turn ON/OFF crash dump feature
4158 MR_CRASH_BUF_TURN_OFF = 0
4159 MR_CRASH_BUF_TURN_ON = 1
4160 * @return 0 on success non-zero on failure.
4161 * Issues an internal command (DCMD) to set parameters for crash dump feature.
4162 * Driver will send address of crash dump DMA buffer and set mbox to tell FW
4163 * that driver supports crash dump feature. This DCMD will be sent only if
4164 * crash dump feature is supported by the FW.
4165 *
4166 */
4167 int megasas_set_crash_dump_params(struct megasas_instance *instance,
4168 u8 crash_buf_state)
4169 {
4170 int ret = 0;
4171 struct megasas_cmd *cmd;
4172 struct megasas_dcmd_frame *dcmd;
4173
4174 cmd = megasas_get_cmd(instance);
4175
4176 if (!cmd) {
4177 dev_err(&instance->pdev->dev, "Failed to get a free cmd\n");
4178 return -ENOMEM;
4179 }
4180
4181
4182 dcmd = &cmd->frame->dcmd;
4183
4184 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4185 dcmd->mbox.b[0] = crash_buf_state;
4186 dcmd->cmd = MFI_CMD_DCMD;
4187 dcmd->cmd_status = MFI_STAT_INVALID_STATUS;
4188 dcmd->sge_count = 1;
4189 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
4190 dcmd->timeout = 0;
4191 dcmd->pad_0 = 0;
4192 dcmd->data_xfer_len = cpu_to_le32(CRASH_DMA_BUF_SIZE);
4193 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_SET_CRASH_DUMP_PARAMS);
4194 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->crash_dump_h);
4195 dcmd->sgl.sge32[0].length = cpu_to_le32(CRASH_DMA_BUF_SIZE);
4196
4197 if (instance->ctrl_context && !instance->mask_interrupts)
4198 ret = megasas_issue_blocked_cmd(instance, cmd,
4199 MEGASAS_BLOCKED_CMD_TIMEOUT);
4200 else
4201 ret = megasas_issue_polled(instance, cmd);
4202
4203 megasas_return_cmd(instance, cmd);
4204 return ret;
4205 }
4206
4207 /**
4208 * megasas_issue_init_mfi - Initializes the FW
4209 * @instance: Adapter soft state
4210 *
4211 * Issues the INIT MFI cmd
4212 */
4213 static int
4214 megasas_issue_init_mfi(struct megasas_instance *instance)
4215 {
4216 __le32 context;
4217
4218 struct megasas_cmd *cmd;
4219
4220 struct megasas_init_frame *init_frame;
4221 struct megasas_init_queue_info *initq_info;
4222 dma_addr_t init_frame_h;
4223 dma_addr_t initq_info_h;
4224
4225 /*
4226 * Prepare a init frame. Note the init frame points to queue info
4227 * structure. Each frame has SGL allocated after first 64 bytes. For
4228 * this frame - since we don't need any SGL - we use SGL's space as
4229 * queue info structure
4230 *
4231 * We will not get a NULL command below. We just created the pool.
4232 */
4233 cmd = megasas_get_cmd(instance);
4234
4235 init_frame = (struct megasas_init_frame *)cmd->frame;
4236 initq_info = (struct megasas_init_queue_info *)
4237 ((unsigned long)init_frame + 64);
4238
4239 init_frame_h = cmd->frame_phys_addr;
4240 initq_info_h = init_frame_h + 64;
4241
4242 context = init_frame->context;
4243 memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
4244 memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
4245 init_frame->context = context;
4246
4247 initq_info->reply_queue_entries = cpu_to_le32(instance->max_fw_cmds + 1);
4248 initq_info->reply_queue_start_phys_addr_lo = cpu_to_le32(instance->reply_queue_h);
4249
4250 initq_info->producer_index_phys_addr_lo = cpu_to_le32(instance->producer_h);
4251 initq_info->consumer_index_phys_addr_lo = cpu_to_le32(instance->consumer_h);
4252
4253 init_frame->cmd = MFI_CMD_INIT;
4254 init_frame->cmd_status = MFI_STAT_INVALID_STATUS;
4255 init_frame->queue_info_new_phys_addr_lo =
4256 cpu_to_le32(lower_32_bits(initq_info_h));
4257 init_frame->queue_info_new_phys_addr_hi =
4258 cpu_to_le32(upper_32_bits(initq_info_h));
4259
4260 init_frame->data_xfer_len = cpu_to_le32(sizeof(struct megasas_init_queue_info));
4261
4262 /*
4263 * disable the intr before firing the init frame to FW
4264 */
4265 instance->instancet->disable_intr(instance);
4266
4267 /*
4268 * Issue the init frame in polled mode
4269 */
4270
4271 if (megasas_issue_polled(instance, cmd)) {
4272 printk(KERN_ERR "megasas: Failed to init firmware\n");
4273 megasas_return_cmd(instance, cmd);
4274 goto fail_fw_init;
4275 }
4276
4277 megasas_return_cmd(instance, cmd);
4278
4279 return 0;
4280
4281 fail_fw_init:
4282 return -EINVAL;
4283 }
4284
4285 static u32
4286 megasas_init_adapter_mfi(struct megasas_instance *instance)
4287 {
4288 struct megasas_register_set __iomem *reg_set;
4289 u32 context_sz;
4290 u32 reply_q_sz;
4291
4292 reg_set = instance->reg_set;
4293
4294 /*
4295 * Get various operational parameters from status register
4296 */
4297 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF;
4298 /*
4299 * Reduce the max supported cmds by 1. This is to ensure that the
4300 * reply_q_sz (1 more than the max cmd that driver may send)
4301 * does not exceed max cmds that the FW can support
4302 */
4303 instance->max_fw_cmds = instance->max_fw_cmds-1;
4304 instance->max_mfi_cmds = instance->max_fw_cmds;
4305 instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >>
4306 0x10;
4307 /*
4308 * For MFI skinny adapters, MEGASAS_SKINNY_INT_CMDS commands
4309 * are reserved for IOCTL + driver's internal DCMDs.
4310 */
4311 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4312 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
4313 instance->max_scsi_cmds = (instance->max_fw_cmds -
4314 MEGASAS_SKINNY_INT_CMDS);
4315 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
4316 } else {
4317 instance->max_scsi_cmds = (instance->max_fw_cmds -
4318 MEGASAS_INT_CMDS);
4319 sema_init(&instance->ioctl_sem, (MEGASAS_MFI_IOCTL_CMDS));
4320 }
4321
4322 /*
4323 * Create a pool of commands
4324 */
4325 if (megasas_alloc_cmds(instance))
4326 goto fail_alloc_cmds;
4327
4328 /*
4329 * Allocate memory for reply queue. Length of reply queue should
4330 * be _one_ more than the maximum commands handled by the firmware.
4331 *
4332 * Note: When FW completes commands, it places corresponding contex
4333 * values in this circular reply queue. This circular queue is a fairly
4334 * typical producer-consumer queue. FW is the producer (of completed
4335 * commands) and the driver is the consumer.
4336 */
4337 context_sz = sizeof(u32);
4338 reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
4339
4340 instance->reply_queue = pci_alloc_consistent(instance->pdev,
4341 reply_q_sz,
4342 &instance->reply_queue_h);
4343
4344 if (!instance->reply_queue) {
4345 printk(KERN_DEBUG "megasas: Out of DMA mem for reply queue\n");
4346 goto fail_reply_queue;
4347 }
4348
4349 if (megasas_issue_init_mfi(instance))
4350 goto fail_fw_init;
4351
4352 if (megasas_get_ctrl_info(instance)) {
4353 dev_err(&instance->pdev->dev, "(%d): Could get controller info "
4354 "Fail from %s %d\n", instance->unique_id,
4355 __func__, __LINE__);
4356 goto fail_fw_init;
4357 }
4358
4359 instance->fw_support_ieee = 0;
4360 instance->fw_support_ieee =
4361 (instance->instancet->read_fw_status_reg(reg_set) &
4362 0x04000000);
4363
4364 printk(KERN_NOTICE "megasas_init_mfi: fw_support_ieee=%d",
4365 instance->fw_support_ieee);
4366
4367 if (instance->fw_support_ieee)
4368 instance->flag_ieee = 1;
4369
4370 return 0;
4371
4372 fail_fw_init:
4373
4374 pci_free_consistent(instance->pdev, reply_q_sz,
4375 instance->reply_queue, instance->reply_queue_h);
4376 fail_reply_queue:
4377 megasas_free_cmds(instance);
4378
4379 fail_alloc_cmds:
4380 return 1;
4381 }
4382
4383 /*
4384 * megasas_setup_irqs_msix - register legacy interrupts.
4385 * @instance: Adapter soft state
4386 *
4387 * Do not enable interrupt, only setup ISRs.
4388 *
4389 * Return 0 on success.
4390 */
4391 static int
4392 megasas_setup_irqs_ioapic(struct megasas_instance *instance)
4393 {
4394 struct pci_dev *pdev;
4395
4396 pdev = instance->pdev;
4397 instance->irq_context[0].instance = instance;
4398 instance->irq_context[0].MSIxIndex = 0;
4399 if (request_irq(pdev->irq, instance->instancet->service_isr,
4400 IRQF_SHARED, "megasas", &instance->irq_context[0])) {
4401 dev_err(&instance->pdev->dev,
4402 "Failed to register IRQ from %s %d\n",
4403 __func__, __LINE__);
4404 return -1;
4405 }
4406 return 0;
4407 }
4408
4409 /**
4410 * megasas_setup_irqs_msix - register MSI-x interrupts.
4411 * @instance: Adapter soft state
4412 * @is_probe: Driver probe check
4413 *
4414 * Do not enable interrupt, only setup ISRs.
4415 *
4416 * Return 0 on success.
4417 */
4418 static int
4419 megasas_setup_irqs_msix(struct megasas_instance *instance, u8 is_probe)
4420 {
4421 int i, j, cpu;
4422 struct pci_dev *pdev;
4423
4424 pdev = instance->pdev;
4425
4426 /* Try MSI-x */
4427 cpu = cpumask_first(cpu_online_mask);
4428 for (i = 0; i < instance->msix_vectors; i++) {
4429 instance->irq_context[i].instance = instance;
4430 instance->irq_context[i].MSIxIndex = i;
4431 if (request_irq(instance->msixentry[i].vector,
4432 instance->instancet->service_isr, 0, "megasas",
4433 &instance->irq_context[i])) {
4434 dev_err(&instance->pdev->dev,
4435 "Failed to register IRQ for vector %d.\n", i);
4436 for (j = 0; j < i; j++) {
4437 if (smp_affinity_enable)
4438 irq_set_affinity_hint(
4439 instance->msixentry[j].vector, NULL);
4440 free_irq(instance->msixentry[j].vector,
4441 &instance->irq_context[j]);
4442 }
4443 /* Retry irq register for IO_APIC*/
4444 instance->msix_vectors = 0;
4445 if (is_probe)
4446 return megasas_setup_irqs_ioapic(instance);
4447 else
4448 return -1;
4449 }
4450 if (smp_affinity_enable) {
4451 if (irq_set_affinity_hint(instance->msixentry[i].vector,
4452 get_cpu_mask(cpu)))
4453 dev_err(&instance->pdev->dev,
4454 "Failed to set affinity hint"
4455 " for cpu %d\n", cpu);
4456 cpu = cpumask_next(cpu, cpu_online_mask);
4457 }
4458 }
4459 return 0;
4460 }
4461
4462 /*
4463 * megasas_destroy_irqs- unregister interrupts.
4464 * @instance: Adapter soft state
4465 * return: void
4466 */
4467 static void
4468 megasas_destroy_irqs(struct megasas_instance *instance) {
4469
4470 int i;
4471
4472 if (instance->msix_vectors)
4473 for (i = 0; i < instance->msix_vectors; i++) {
4474 if (smp_affinity_enable)
4475 irq_set_affinity_hint(
4476 instance->msixentry[i].vector, NULL);
4477 free_irq(instance->msixentry[i].vector,
4478 &instance->irq_context[i]);
4479 }
4480 else
4481 free_irq(instance->pdev->irq, &instance->irq_context[0]);
4482 }
4483
4484 /**
4485 * megasas_init_fw - Initializes the FW
4486 * @instance: Adapter soft state
4487 *
4488 * This is the main function for initializing firmware
4489 */
4490
4491 static int megasas_init_fw(struct megasas_instance *instance)
4492 {
4493 u32 max_sectors_1;
4494 u32 max_sectors_2;
4495 u32 tmp_sectors, msix_enable, scratch_pad_2;
4496 resource_size_t base_addr;
4497 struct megasas_register_set __iomem *reg_set;
4498 struct megasas_ctrl_info *ctrl_info = NULL;
4499 unsigned long bar_list;
4500 int i, loop, fw_msix_count = 0;
4501 struct IOV_111 *iovPtr;
4502
4503 /* Find first memory bar */
4504 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
4505 instance->bar = find_first_bit(&bar_list, sizeof(unsigned long));
4506 if (pci_request_selected_regions(instance->pdev, instance->bar,
4507 "megasas: LSI")) {
4508 printk(KERN_DEBUG "megasas: IO memory region busy!\n");
4509 return -EBUSY;
4510 }
4511
4512 base_addr = pci_resource_start(instance->pdev, instance->bar);
4513 instance->reg_set = ioremap_nocache(base_addr, 8192);
4514
4515 if (!instance->reg_set) {
4516 printk(KERN_DEBUG "megasas: Failed to map IO mem\n");
4517 goto fail_ioremap;
4518 }
4519
4520 reg_set = instance->reg_set;
4521
4522 switch (instance->pdev->device) {
4523 case PCI_DEVICE_ID_LSI_FUSION:
4524 case PCI_DEVICE_ID_LSI_PLASMA:
4525 case PCI_DEVICE_ID_LSI_INVADER:
4526 case PCI_DEVICE_ID_LSI_FURY:
4527 instance->instancet = &megasas_instance_template_fusion;
4528 break;
4529 case PCI_DEVICE_ID_LSI_SAS1078R:
4530 case PCI_DEVICE_ID_LSI_SAS1078DE:
4531 instance->instancet = &megasas_instance_template_ppc;
4532 break;
4533 case PCI_DEVICE_ID_LSI_SAS1078GEN2:
4534 case PCI_DEVICE_ID_LSI_SAS0079GEN2:
4535 instance->instancet = &megasas_instance_template_gen2;
4536 break;
4537 case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
4538 case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
4539 instance->instancet = &megasas_instance_template_skinny;
4540 break;
4541 case PCI_DEVICE_ID_LSI_SAS1064R:
4542 case PCI_DEVICE_ID_DELL_PERC5:
4543 default:
4544 instance->instancet = &megasas_instance_template_xscale;
4545 break;
4546 }
4547
4548 if (megasas_transition_to_ready(instance, 0)) {
4549 atomic_set(&instance->fw_reset_no_pci_access, 1);
4550 instance->instancet->adp_reset
4551 (instance, instance->reg_set);
4552 atomic_set(&instance->fw_reset_no_pci_access, 0);
4553 dev_info(&instance->pdev->dev,
4554 "megasas: FW restarted successfully from %s!\n",
4555 __func__);
4556
4557 /*waitting for about 30 second before retry*/
4558 ssleep(30);
4559
4560 if (megasas_transition_to_ready(instance, 0))
4561 goto fail_ready_state;
4562 }
4563
4564 /*
4565 * MSI-X host index 0 is common for all adapter.
4566 * It is used for all MPT based Adapters.
4567 */
4568 instance->reply_post_host_index_addr[0] =
4569 (u32 __iomem *)((u8 __iomem *)instance->reg_set +
4570 MPI2_REPLY_POST_HOST_INDEX_OFFSET);
4571
4572 /* Check if MSI-X is supported while in ready state */
4573 msix_enable = (instance->instancet->read_fw_status_reg(reg_set) &
4574 0x4000000) >> 0x1a;
4575 if (msix_enable && !msix_disable) {
4576 scratch_pad_2 = readl
4577 (&instance->reg_set->outbound_scratch_pad_2);
4578 /* Check max MSI-X vectors */
4579 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
4580 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA)) {
4581 instance->msix_vectors = (scratch_pad_2
4582 & MR_MAX_REPLY_QUEUES_OFFSET) + 1;
4583 fw_msix_count = instance->msix_vectors;
4584 if (msix_vectors)
4585 instance->msix_vectors =
4586 min(msix_vectors,
4587 instance->msix_vectors);
4588 } else if ((instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)
4589 || (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
4590 /* Invader/Fury supports more than 8 MSI-X */
4591 instance->msix_vectors = ((scratch_pad_2
4592 & MR_MAX_REPLY_QUEUES_EXT_OFFSET)
4593 >> MR_MAX_REPLY_QUEUES_EXT_OFFSET_SHIFT) + 1;
4594 fw_msix_count = instance->msix_vectors;
4595 /* Save 1-15 reply post index address to local memory
4596 * Index 0 is already saved from reg offset
4597 * MPI2_REPLY_POST_HOST_INDEX_OFFSET
4598 */
4599 for (loop = 1; loop < MR_MAX_MSIX_REG_ARRAY; loop++) {
4600 instance->reply_post_host_index_addr[loop] =
4601 (u32 __iomem *)
4602 ((u8 __iomem *)instance->reg_set +
4603 MPI2_SUP_REPLY_POST_HOST_INDEX_OFFSET
4604 + (loop * 0x10));
4605 }
4606 if (msix_vectors)
4607 instance->msix_vectors = min(msix_vectors,
4608 instance->msix_vectors);
4609 } else
4610 instance->msix_vectors = 1;
4611 /* Don't bother allocating more MSI-X vectors than cpus */
4612 instance->msix_vectors = min(instance->msix_vectors,
4613 (unsigned int)num_online_cpus());
4614 for (i = 0; i < instance->msix_vectors; i++)
4615 instance->msixentry[i].entry = i;
4616 i = pci_enable_msix_range(instance->pdev, instance->msixentry,
4617 1, instance->msix_vectors);
4618 if (i > 0)
4619 instance->msix_vectors = i;
4620 else
4621 instance->msix_vectors = 0;
4622 }
4623
4624 dev_info(&instance->pdev->dev,
4625 "firmware supports msix\t: (%d)", fw_msix_count);
4626 dev_info(&instance->pdev->dev,
4627 "current msix/online cpus\t: (%d/%d)\n",
4628 instance->msix_vectors, (unsigned int)num_online_cpus());
4629
4630 if (instance->msix_vectors ?
4631 megasas_setup_irqs_msix(instance, 1) :
4632 megasas_setup_irqs_ioapic(instance))
4633 goto fail_setup_irqs;
4634
4635 instance->ctrl_info = kzalloc(sizeof(struct megasas_ctrl_info),
4636 GFP_KERNEL);
4637 if (instance->ctrl_info == NULL)
4638 goto fail_init_adapter;
4639
4640 /*
4641 * Below are default value for legacy Firmware.
4642 * non-fusion based controllers
4643 */
4644 instance->fw_supported_vd_count = MAX_LOGICAL_DRIVES;
4645 instance->fw_supported_pd_count = MAX_PHYSICAL_DEVICES;
4646 /* Get operational params, sge flags, send init cmd to controller */
4647 if (instance->instancet->init_adapter(instance))
4648 goto fail_init_adapter;
4649
4650 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
4651 (unsigned long)instance);
4652
4653 instance->instancet->enable_intr(instance);
4654
4655 printk(KERN_ERR "megasas: INIT adapter done\n");
4656
4657 /** for passthrough
4658 * the following function will get the PD LIST.
4659 */
4660
4661 memset(instance->pd_list, 0 ,
4662 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)));
4663 if (megasas_get_pd_list(instance) < 0) {
4664 printk(KERN_ERR "megasas: failed to get PD list\n");
4665 goto fail_get_pd_list;
4666 }
4667
4668 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
4669 if (megasas_ld_list_query(instance,
4670 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
4671 megasas_get_ld_list(instance);
4672
4673 /*
4674 * Compute the max allowed sectors per IO: The controller info has two
4675 * limits on max sectors. Driver should use the minimum of these two.
4676 *
4677 * 1 << stripe_sz_ops.min = max sectors per strip
4678 *
4679 * Note that older firmwares ( < FW ver 30) didn't report information
4680 * to calculate max_sectors_1. So the number ended up as zero always.
4681 */
4682 tmp_sectors = 0;
4683 ctrl_info = instance->ctrl_info;
4684
4685 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
4686 le16_to_cpu(ctrl_info->max_strips_per_io);
4687 max_sectors_2 = le32_to_cpu(ctrl_info->max_request_size);
4688
4689 tmp_sectors = min_t(u32, max_sectors_1 , max_sectors_2);
4690
4691 instance->disableOnlineCtrlReset =
4692 ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset;
4693 instance->mpio = ctrl_info->adapterOperations2.mpio;
4694 instance->UnevenSpanSupport =
4695 ctrl_info->adapterOperations2.supportUnevenSpans;
4696 if (instance->UnevenSpanSupport) {
4697 struct fusion_context *fusion = instance->ctrl_context;
4698 if (MR_ValidateMapInfo(instance))
4699 fusion->fast_path_io = 1;
4700 else
4701 fusion->fast_path_io = 0;
4702
4703 }
4704 if (ctrl_info->host_interface.SRIOV) {
4705 if (!ctrl_info->adapterOperations2.activePassive)
4706 instance->PlasmaFW111 = 1;
4707
4708 if (!instance->PlasmaFW111)
4709 instance->requestorId =
4710 ctrl_info->iov.requestorId;
4711 else {
4712 iovPtr = (struct IOV_111 *)((unsigned char *)ctrl_info + IOV_111_OFFSET);
4713 instance->requestorId = iovPtr->requestorId;
4714 }
4715 dev_warn(&instance->pdev->dev, "I am VF "
4716 "requestorId %d\n", instance->requestorId);
4717 }
4718
4719 instance->crash_dump_fw_support =
4720 ctrl_info->adapterOperations3.supportCrashDump;
4721 instance->crash_dump_drv_support =
4722 (instance->crash_dump_fw_support &&
4723 instance->crash_dump_buf);
4724 if (instance->crash_dump_drv_support)
4725 megasas_set_crash_dump_params(instance,
4726 MR_CRASH_BUF_TURN_OFF);
4727
4728 else {
4729 if (instance->crash_dump_buf)
4730 pci_free_consistent(instance->pdev,
4731 CRASH_DMA_BUF_SIZE,
4732 instance->crash_dump_buf,
4733 instance->crash_dump_h);
4734 instance->crash_dump_buf = NULL;
4735 }
4736
4737 instance->secure_jbod_support =
4738 ctrl_info->adapterOperations3.supportSecurityonJBOD;
4739
4740 dev_info(&instance->pdev->dev,
4741 "pci id\t\t: (0x%04x)/(0x%04x)/(0x%04x)/(0x%04x)\n",
4742 le16_to_cpu(ctrl_info->pci.vendor_id),
4743 le16_to_cpu(ctrl_info->pci.device_id),
4744 le16_to_cpu(ctrl_info->pci.sub_vendor_id),
4745 le16_to_cpu(ctrl_info->pci.sub_device_id));
4746 dev_info(&instance->pdev->dev, "unevenspan support : %s\n",
4747 instance->UnevenSpanSupport ? "yes" : "no");
4748 dev_info(&instance->pdev->dev, "disable ocr : %s\n",
4749 instance->disableOnlineCtrlReset ? "yes" : "no");
4750 dev_info(&instance->pdev->dev, "firmware crash dump : %s\n",
4751 instance->crash_dump_drv_support ? "yes" : "no");
4752 dev_info(&instance->pdev->dev, "secure jbod : %s\n",
4753 instance->secure_jbod_support ? "yes" : "no");
4754
4755
4756 instance->max_sectors_per_req = instance->max_num_sge *
4757 PAGE_SIZE / 512;
4758 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
4759 instance->max_sectors_per_req = tmp_sectors;
4760
4761 /* Check for valid throttlequeuedepth module parameter */
4762 if (throttlequeuedepth &&
4763 throttlequeuedepth <= instance->max_scsi_cmds)
4764 instance->throttlequeuedepth = throttlequeuedepth;
4765 else
4766 instance->throttlequeuedepth =
4767 MEGASAS_THROTTLE_QUEUE_DEPTH;
4768
4769
4770 /* Launch SR-IOV heartbeat timer */
4771 if (instance->requestorId) {
4772 if (!megasas_sriov_start_heartbeat(instance, 1))
4773 megasas_start_timer(instance,
4774 &instance->sriov_heartbeat_timer,
4775 megasas_sriov_heartbeat_handler,
4776 MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
4777 else
4778 instance->skip_heartbeat_timer_del = 1;
4779 }
4780
4781 return 0;
4782
4783 fail_get_pd_list:
4784 instance->instancet->disable_intr(instance);
4785 fail_init_adapter:
4786 megasas_destroy_irqs(instance);
4787 fail_setup_irqs:
4788 if (instance->msix_vectors)
4789 pci_disable_msix(instance->pdev);
4790 instance->msix_vectors = 0;
4791 fail_ready_state:
4792 kfree(instance->ctrl_info);
4793 instance->ctrl_info = NULL;
4794 iounmap(instance->reg_set);
4795
4796 fail_ioremap:
4797 pci_release_selected_regions(instance->pdev, instance->bar);
4798
4799 return -EINVAL;
4800 }
4801
4802 /**
4803 * megasas_release_mfi - Reverses the FW initialization
4804 * @instance: Adapter soft state
4805 */
4806 static void megasas_release_mfi(struct megasas_instance *instance)
4807 {
4808 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
4809
4810 if (instance->reply_queue)
4811 pci_free_consistent(instance->pdev, reply_q_sz,
4812 instance->reply_queue, instance->reply_queue_h);
4813
4814 megasas_free_cmds(instance);
4815
4816 iounmap(instance->reg_set);
4817
4818 pci_release_selected_regions(instance->pdev, instance->bar);
4819 }
4820
4821 /**
4822 * megasas_get_seq_num - Gets latest event sequence numbers
4823 * @instance: Adapter soft state
4824 * @eli: FW event log sequence numbers information
4825 *
4826 * FW maintains a log of all events in a non-volatile area. Upper layers would
4827 * usually find out the latest sequence number of the events, the seq number at
4828 * the boot etc. They would "read" all the events below the latest seq number
4829 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
4830 * number), they would subsribe to AEN (asynchronous event notification) and
4831 * wait for the events to happen.
4832 */
4833 static int
4834 megasas_get_seq_num(struct megasas_instance *instance,
4835 struct megasas_evt_log_info *eli)
4836 {
4837 struct megasas_cmd *cmd;
4838 struct megasas_dcmd_frame *dcmd;
4839 struct megasas_evt_log_info *el_info;
4840 dma_addr_t el_info_h = 0;
4841
4842 cmd = megasas_get_cmd(instance);
4843
4844 if (!cmd) {
4845 return -ENOMEM;
4846 }
4847
4848 dcmd = &cmd->frame->dcmd;
4849 el_info = pci_alloc_consistent(instance->pdev,
4850 sizeof(struct megasas_evt_log_info),
4851 &el_info_h);
4852
4853 if (!el_info) {
4854 megasas_return_cmd(instance, cmd);
4855 return -ENOMEM;
4856 }
4857
4858 memset(el_info, 0, sizeof(*el_info));
4859 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4860
4861 dcmd->cmd = MFI_CMD_DCMD;
4862 dcmd->cmd_status = 0x0;
4863 dcmd->sge_count = 1;
4864 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4865 dcmd->timeout = 0;
4866 dcmd->pad_0 = 0;
4867 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_log_info));
4868 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_GET_INFO);
4869 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(el_info_h);
4870 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_log_info));
4871
4872 if (megasas_issue_blocked_cmd(instance, cmd, 30))
4873 dev_err(&instance->pdev->dev, "Command timedout"
4874 "from %s\n", __func__);
4875 else {
4876 /*
4877 * Copy the data back into callers buffer
4878 */
4879 eli->newest_seq_num = el_info->newest_seq_num;
4880 eli->oldest_seq_num = el_info->oldest_seq_num;
4881 eli->clear_seq_num = el_info->clear_seq_num;
4882 eli->shutdown_seq_num = el_info->shutdown_seq_num;
4883 eli->boot_seq_num = el_info->boot_seq_num;
4884 }
4885
4886 pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info),
4887 el_info, el_info_h);
4888
4889 megasas_return_cmd(instance, cmd);
4890
4891 return 0;
4892 }
4893
4894 /**
4895 * megasas_register_aen - Registers for asynchronous event notification
4896 * @instance: Adapter soft state
4897 * @seq_num: The starting sequence number
4898 * @class_locale: Class of the event
4899 *
4900 * This function subscribes for AEN for events beyond the @seq_num. It requests
4901 * to be notified if and only if the event is of type @class_locale
4902 */
4903 static int
4904 megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
4905 u32 class_locale_word)
4906 {
4907 int ret_val;
4908 struct megasas_cmd *cmd;
4909 struct megasas_dcmd_frame *dcmd;
4910 union megasas_evt_class_locale curr_aen;
4911 union megasas_evt_class_locale prev_aen;
4912
4913 /*
4914 * If there an AEN pending already (aen_cmd), check if the
4915 * class_locale of that pending AEN is inclusive of the new
4916 * AEN request we currently have. If it is, then we don't have
4917 * to do anything. In other words, whichever events the current
4918 * AEN request is subscribing to, have already been subscribed
4919 * to.
4920 *
4921 * If the old_cmd is _not_ inclusive, then we have to abort
4922 * that command, form a class_locale that is superset of both
4923 * old and current and re-issue to the FW
4924 */
4925
4926 curr_aen.word = class_locale_word;
4927
4928 if (instance->aen_cmd) {
4929
4930 prev_aen.word =
4931 le32_to_cpu(instance->aen_cmd->frame->dcmd.mbox.w[1]);
4932
4933 /*
4934 * A class whose enum value is smaller is inclusive of all
4935 * higher values. If a PROGRESS (= -1) was previously
4936 * registered, then a new registration requests for higher
4937 * classes need not be sent to FW. They are automatically
4938 * included.
4939 *
4940 * Locale numbers don't have such hierarchy. They are bitmap
4941 * values
4942 */
4943 if ((prev_aen.members.class <= curr_aen.members.class) &&
4944 !((prev_aen.members.locale & curr_aen.members.locale) ^
4945 curr_aen.members.locale)) {
4946 /*
4947 * Previously issued event registration includes
4948 * current request. Nothing to do.
4949 */
4950 return 0;
4951 } else {
4952 curr_aen.members.locale |= prev_aen.members.locale;
4953
4954 if (prev_aen.members.class < curr_aen.members.class)
4955 curr_aen.members.class = prev_aen.members.class;
4956
4957 instance->aen_cmd->abort_aen = 1;
4958 ret_val = megasas_issue_blocked_abort_cmd(instance,
4959 instance->
4960 aen_cmd, 30);
4961
4962 if (ret_val) {
4963 printk(KERN_DEBUG "megasas: Failed to abort "
4964 "previous AEN command\n");
4965 return ret_val;
4966 }
4967 }
4968 }
4969
4970 cmd = megasas_get_cmd(instance);
4971
4972 if (!cmd)
4973 return -ENOMEM;
4974
4975 dcmd = &cmd->frame->dcmd;
4976
4977 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
4978
4979 /*
4980 * Prepare DCMD for aen registration
4981 */
4982 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4983
4984 dcmd->cmd = MFI_CMD_DCMD;
4985 dcmd->cmd_status = 0x0;
4986 dcmd->sge_count = 1;
4987 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_READ);
4988 dcmd->timeout = 0;
4989 dcmd->pad_0 = 0;
4990 dcmd->data_xfer_len = cpu_to_le32(sizeof(struct megasas_evt_detail));
4991 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_EVENT_WAIT);
4992 dcmd->mbox.w[0] = cpu_to_le32(seq_num);
4993 instance->last_seq_num = seq_num;
4994 dcmd->mbox.w[1] = cpu_to_le32(curr_aen.word);
4995 dcmd->sgl.sge32[0].phys_addr = cpu_to_le32(instance->evt_detail_h);
4996 dcmd->sgl.sge32[0].length = cpu_to_le32(sizeof(struct megasas_evt_detail));
4997
4998 if (instance->aen_cmd != NULL) {
4999 megasas_return_cmd(instance, cmd);
5000 return 0;
5001 }
5002
5003 /*
5004 * Store reference to the cmd used to register for AEN. When an
5005 * application wants us to register for AEN, we have to abort this
5006 * cmd and re-register with a new EVENT LOCALE supplied by that app
5007 */
5008 instance->aen_cmd = cmd;
5009
5010 /*
5011 * Issue the aen registration frame
5012 */
5013 instance->instancet->issue_dcmd(instance, cmd);
5014
5015 return 0;
5016 }
5017
5018 /**
5019 * megasas_start_aen - Subscribes to AEN during driver load time
5020 * @instance: Adapter soft state
5021 */
5022 static int megasas_start_aen(struct megasas_instance *instance)
5023 {
5024 struct megasas_evt_log_info eli;
5025 union megasas_evt_class_locale class_locale;
5026
5027 /*
5028 * Get the latest sequence number from FW
5029 */
5030 memset(&eli, 0, sizeof(eli));
5031
5032 if (megasas_get_seq_num(instance, &eli))
5033 return -1;
5034
5035 /*
5036 * Register AEN with FW for latest sequence number plus 1
5037 */
5038 class_locale.members.reserved = 0;
5039 class_locale.members.locale = MR_EVT_LOCALE_ALL;
5040 class_locale.members.class = MR_EVT_CLASS_DEBUG;
5041
5042 return megasas_register_aen(instance,
5043 le32_to_cpu(eli.newest_seq_num) + 1,
5044 class_locale.word);
5045 }
5046
5047 /**
5048 * megasas_io_attach - Attaches this driver to SCSI mid-layer
5049 * @instance: Adapter soft state
5050 */
5051 static int megasas_io_attach(struct megasas_instance *instance)
5052 {
5053 struct Scsi_Host *host = instance->host;
5054 u32 error;
5055
5056 /*
5057 * Export parameters required by SCSI mid-layer
5058 */
5059 host->irq = instance->pdev->irq;
5060 host->unique_id = instance->unique_id;
5061 host->can_queue = instance->max_scsi_cmds;
5062 host->this_id = instance->init_id;
5063 host->sg_tablesize = instance->max_num_sge;
5064
5065 if (instance->fw_support_ieee)
5066 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
5067
5068 /*
5069 * Check if the module parameter value for max_sectors can be used
5070 */
5071 if (max_sectors && max_sectors < instance->max_sectors_per_req)
5072 instance->max_sectors_per_req = max_sectors;
5073 else {
5074 if (max_sectors) {
5075 if (((instance->pdev->device ==
5076 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
5077 (instance->pdev->device ==
5078 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
5079 (max_sectors <= MEGASAS_MAX_SECTORS)) {
5080 instance->max_sectors_per_req = max_sectors;
5081 } else {
5082 printk(KERN_INFO "megasas: max_sectors should be > 0"
5083 "and <= %d (or < 1MB for GEN2 controller)\n",
5084 instance->max_sectors_per_req);
5085 }
5086 }
5087 }
5088
5089 host->max_sectors = instance->max_sectors_per_req;
5090 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
5091 host->max_channel = MEGASAS_MAX_CHANNELS - 1;
5092 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
5093 host->max_lun = MEGASAS_MAX_LUN;
5094 host->max_cmd_len = 16;
5095
5096 /* Fusion only supports host reset */
5097 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
5098 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) ||
5099 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
5100 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
5101 host->hostt->eh_device_reset_handler = NULL;
5102 host->hostt->eh_bus_reset_handler = NULL;
5103 }
5104 error = scsi_init_shared_tag_map(host, host->can_queue);
5105 if (error) {
5106 dev_err(&instance->pdev->dev,
5107 "Failed to shared tag from %s %d\n",
5108 __func__, __LINE__);
5109 return -ENODEV;
5110 }
5111
5112 /*
5113 * Notify the mid-layer about the new controller
5114 */
5115 if (scsi_add_host(host, &instance->pdev->dev)) {
5116 dev_err(&instance->pdev->dev,
5117 "Failed to add host from %s %d\n",
5118 __func__, __LINE__);
5119 return -ENODEV;
5120 }
5121
5122 return 0;
5123 }
5124
5125 static int
5126 megasas_set_dma_mask(struct pci_dev *pdev)
5127 {
5128 /*
5129 * All our contollers are capable of performing 64-bit DMA
5130 */
5131 if (IS_DMA64) {
5132 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) {
5133
5134 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
5135 goto fail_set_dma_mask;
5136 }
5137 } else {
5138 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
5139 goto fail_set_dma_mask;
5140 }
5141 /*
5142 * Ensure that all data structures are allocated in 32-bit
5143 * memory.
5144 */
5145 if (pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)) != 0) {
5146 /* Try 32bit DMA mask and 32 bit Consistent dma mask */
5147 if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))
5148 && !pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)))
5149 dev_info(&pdev->dev, "set 32bit DMA mask"
5150 "and 32 bit consistent mask\n");
5151 else
5152 goto fail_set_dma_mask;
5153 }
5154
5155 return 0;
5156
5157 fail_set_dma_mask:
5158 return 1;
5159 }
5160
5161 /**
5162 * megasas_probe_one - PCI hotplug entry point
5163 * @pdev: PCI device structure
5164 * @id: PCI ids of supported hotplugged adapter
5165 */
5166 static int megasas_probe_one(struct pci_dev *pdev,
5167 const struct pci_device_id *id)
5168 {
5169 int rval, pos;
5170 struct Scsi_Host *host;
5171 struct megasas_instance *instance;
5172 u16 control = 0;
5173 struct fusion_context *fusion = NULL;
5174
5175 /* Reset MSI-X in the kdump kernel */
5176 if (reset_devices) {
5177 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
5178 if (pos) {
5179 pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS,
5180 &control);
5181 if (control & PCI_MSIX_FLAGS_ENABLE) {
5182 dev_info(&pdev->dev, "resetting MSI-X\n");
5183 pci_write_config_word(pdev,
5184 pos + PCI_MSIX_FLAGS,
5185 control &
5186 ~PCI_MSIX_FLAGS_ENABLE);
5187 }
5188 }
5189 }
5190
5191 /*
5192 * PCI prepping: enable device set bus mastering and dma mask
5193 */
5194 rval = pci_enable_device_mem(pdev);
5195
5196 if (rval) {
5197 return rval;
5198 }
5199
5200 pci_set_master(pdev);
5201
5202 if (megasas_set_dma_mask(pdev))
5203 goto fail_set_dma_mask;
5204
5205 host = scsi_host_alloc(&megasas_template,
5206 sizeof(struct megasas_instance));
5207
5208 if (!host) {
5209 printk(KERN_DEBUG "megasas: scsi_host_alloc failed\n");
5210 goto fail_alloc_instance;
5211 }
5212
5213 instance = (struct megasas_instance *)host->hostdata;
5214 memset(instance, 0, sizeof(*instance));
5215 atomic_set( &instance->fw_reset_no_pci_access, 0 );
5216 instance->pdev = pdev;
5217
5218 switch (instance->pdev->device) {
5219 case PCI_DEVICE_ID_LSI_FUSION:
5220 case PCI_DEVICE_ID_LSI_PLASMA:
5221 case PCI_DEVICE_ID_LSI_INVADER:
5222 case PCI_DEVICE_ID_LSI_FURY:
5223 {
5224 instance->ctrl_context_pages =
5225 get_order(sizeof(struct fusion_context));
5226 instance->ctrl_context = (void *)__get_free_pages(GFP_KERNEL,
5227 instance->ctrl_context_pages);
5228 if (!instance->ctrl_context) {
5229 printk(KERN_DEBUG "megasas: Failed to allocate "
5230 "memory for Fusion context info\n");
5231 goto fail_alloc_dma_buf;
5232 }
5233 fusion = instance->ctrl_context;
5234 memset(fusion, 0,
5235 ((1 << PAGE_SHIFT) << instance->ctrl_context_pages));
5236 }
5237 break;
5238 default: /* For all other supported controllers */
5239
5240 instance->producer =
5241 pci_alloc_consistent(pdev, sizeof(u32),
5242 &instance->producer_h);
5243 instance->consumer =
5244 pci_alloc_consistent(pdev, sizeof(u32),
5245 &instance->consumer_h);
5246
5247 if (!instance->producer || !instance->consumer) {
5248 printk(KERN_DEBUG "megasas: Failed to allocate"
5249 "memory for producer, consumer\n");
5250 goto fail_alloc_dma_buf;
5251 }
5252
5253 *instance->producer = 0;
5254 *instance->consumer = 0;
5255 break;
5256 }
5257
5258 instance->system_info_buf = pci_zalloc_consistent(pdev,
5259 sizeof(struct MR_DRV_SYSTEM_INFO),
5260 &instance->system_info_h);
5261
5262 if (!instance->system_info_buf)
5263 dev_info(&instance->pdev->dev, "Can't allocate system info buffer\n");
5264
5265 /* Crash dump feature related initialisation*/
5266 instance->drv_buf_index = 0;
5267 instance->drv_buf_alloc = 0;
5268 instance->crash_dump_fw_support = 0;
5269 instance->crash_dump_app_support = 0;
5270 instance->fw_crash_state = UNAVAILABLE;
5271 spin_lock_init(&instance->crashdump_lock);
5272 instance->crash_dump_buf = NULL;
5273
5274 if (!reset_devices)
5275 instance->crash_dump_buf = pci_alloc_consistent(pdev,
5276 CRASH_DMA_BUF_SIZE,
5277 &instance->crash_dump_h);
5278 if (!instance->crash_dump_buf)
5279 dev_err(&instance->pdev->dev, "Can't allocate Firmware "
5280 "crash dump DMA buffer\n");
5281
5282 megasas_poll_wait_aen = 0;
5283 instance->flag_ieee = 0;
5284 instance->ev = NULL;
5285 instance->issuepend_done = 1;
5286 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
5287 instance->is_imr = 0;
5288
5289 instance->evt_detail = pci_alloc_consistent(pdev,
5290 sizeof(struct
5291 megasas_evt_detail),
5292 &instance->evt_detail_h);
5293
5294 if (!instance->evt_detail) {
5295 printk(KERN_DEBUG "megasas: Failed to allocate memory for "
5296 "event detail structure\n");
5297 goto fail_alloc_dma_buf;
5298 }
5299
5300 /*
5301 * Initialize locks and queues
5302 */
5303 INIT_LIST_HEAD(&instance->cmd_pool);
5304 INIT_LIST_HEAD(&instance->internal_reset_pending_q);
5305
5306 atomic_set(&instance->fw_outstanding,0);
5307
5308 init_waitqueue_head(&instance->int_cmd_wait_q);
5309 init_waitqueue_head(&instance->abort_cmd_wait_q);
5310
5311 spin_lock_init(&instance->mfi_pool_lock);
5312 spin_lock_init(&instance->hba_lock);
5313 spin_lock_init(&instance->completion_lock);
5314
5315 mutex_init(&instance->aen_mutex);
5316 mutex_init(&instance->reset_mutex);
5317
5318 /*
5319 * Initialize PCI related and misc parameters
5320 */
5321 instance->host = host;
5322 instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
5323 instance->init_id = MEGASAS_DEFAULT_INIT_ID;
5324 instance->ctrl_info = NULL;
5325
5326
5327 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
5328 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY))
5329 instance->flag_ieee = 1;
5330
5331 megasas_dbg_lvl = 0;
5332 instance->flag = 0;
5333 instance->unload = 1;
5334 instance->last_time = 0;
5335 instance->disableOnlineCtrlReset = 1;
5336 instance->UnevenSpanSupport = 0;
5337
5338 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
5339 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) ||
5340 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
5341 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY)) {
5342 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
5343 INIT_WORK(&instance->crash_init, megasas_fusion_crash_dump_wq);
5344 } else
5345 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
5346
5347 /*
5348 * Initialize MFI Firmware
5349 */
5350 if (megasas_init_fw(instance))
5351 goto fail_init_mfi;
5352
5353 if (instance->requestorId) {
5354 if (instance->PlasmaFW111) {
5355 instance->vf_affiliation_111 =
5356 pci_alloc_consistent(pdev, sizeof(struct MR_LD_VF_AFFILIATION_111),
5357 &instance->vf_affiliation_111_h);
5358 if (!instance->vf_affiliation_111)
5359 printk(KERN_WARNING "megasas: Can't allocate "
5360 "memory for VF affiliation buffer\n");
5361 } else {
5362 instance->vf_affiliation =
5363 pci_alloc_consistent(pdev,
5364 (MAX_LOGICAL_DRIVES + 1) *
5365 sizeof(struct MR_LD_VF_AFFILIATION),
5366 &instance->vf_affiliation_h);
5367 if (!instance->vf_affiliation)
5368 printk(KERN_WARNING "megasas: Can't allocate "
5369 "memory for VF affiliation buffer\n");
5370 }
5371 }
5372
5373 /*
5374 * Store instance in PCI softstate
5375 */
5376 pci_set_drvdata(pdev, instance);
5377
5378 /*
5379 * Add this controller to megasas_mgmt_info structure so that it
5380 * can be exported to management applications
5381 */
5382 megasas_mgmt_info.count++;
5383 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
5384 megasas_mgmt_info.max_index++;
5385
5386 /*
5387 * Register with SCSI mid-layer
5388 */
5389 if (megasas_io_attach(instance))
5390 goto fail_io_attach;
5391
5392 instance->unload = 0;
5393 /*
5394 * Trigger SCSI to scan our drives
5395 */
5396 scsi_scan_host(host);
5397
5398 /*
5399 * Initiate AEN (Asynchronous Event Notification)
5400 */
5401 if (megasas_start_aen(instance)) {
5402 printk(KERN_DEBUG "megasas: start aen failed\n");
5403 goto fail_start_aen;
5404 }
5405
5406 /* Get current SR-IOV LD/VF affiliation */
5407 if (instance->requestorId)
5408 megasas_get_ld_vf_affiliation(instance, 1);
5409
5410 return 0;
5411
5412 fail_start_aen:
5413 fail_io_attach:
5414 megasas_mgmt_info.count--;
5415 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
5416 megasas_mgmt_info.max_index--;
5417
5418 instance->instancet->disable_intr(instance);
5419 megasas_destroy_irqs(instance);
5420
5421 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
5422 (instance->pdev->device == PCI_DEVICE_ID_LSI_PLASMA) ||
5423 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER) ||
5424 (instance->pdev->device == PCI_DEVICE_ID_LSI_FURY))
5425 megasas_release_fusion(instance);
5426 else
5427 megasas_release_mfi(instance);
5428 if (instance->msix_vectors)
5429 pci_disable_msix(instance->pdev);
5430 fail_init_mfi:
5431 fail_alloc_dma_buf:
5432 if (instance->evt_detail)
5433 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
5434 instance->evt_detail,
5435 instance->evt_detail_h);
5436
5437 if (instance->producer)
5438 pci_free_consistent(pdev, sizeof(u32), instance->producer,
5439 instance->producer_h);
5440 if (instance->consumer)
5441 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
5442 instance->consumer_h);
5443 scsi_host_put(host);
5444
5445 fail_alloc_instance:
5446 fail_set_dma_mask:
5447 pci_disable_device(pdev);
5448
5449 return -ENODEV;
5450 }
5451
5452 /**
5453 * megasas_flush_cache - Requests FW to flush all its caches
5454 * @instance: Adapter soft state
5455 */
5456 static void megasas_flush_cache(struct megasas_instance *instance)
5457 {
5458 struct megasas_cmd *cmd;
5459 struct megasas_dcmd_frame *dcmd;
5460
5461 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
5462 return;
5463
5464 cmd = megasas_get_cmd(instance);
5465
5466 if (!cmd)
5467 return;
5468
5469 dcmd = &cmd->frame->dcmd;
5470
5471 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5472
5473 dcmd->cmd = MFI_CMD_DCMD;
5474 dcmd->cmd_status = 0x0;
5475 dcmd->sge_count = 0;
5476 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
5477 dcmd->timeout = 0;
5478 dcmd->pad_0 = 0;
5479 dcmd->data_xfer_len = 0;
5480 dcmd->opcode = cpu_to_le32(MR_DCMD_CTRL_CACHE_FLUSH);
5481 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
5482
5483 if (megasas_issue_blocked_cmd(instance, cmd, 30))
5484 dev_err(&instance->pdev->dev, "Command timedout"
5485 " from %s\n", __func__);
5486
5487 megasas_return_cmd(instance, cmd);
5488
5489 return;
5490 }
5491
5492 /**
5493 * megasas_shutdown_controller - Instructs FW to shutdown the controller
5494 * @instance: Adapter soft state
5495 * @opcode: Shutdown/Hibernate
5496 */
5497 static void megasas_shutdown_controller(struct megasas_instance *instance,
5498 u32 opcode)
5499 {
5500 struct megasas_cmd *cmd;
5501 struct megasas_dcmd_frame *dcmd;
5502
5503 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
5504 return;
5505
5506 cmd = megasas_get_cmd(instance);
5507
5508 if (!cmd)
5509 return;
5510
5511 if (instance->aen_cmd)
5512 megasas_issue_blocked_abort_cmd(instance,
5513 instance->aen_cmd, 30);
5514 if (instance->map_update_cmd)
5515 megasas_issue_blocked_abort_cmd(instance,
5516 instance->map_update_cmd, 30);
5517 dcmd = &cmd->frame->dcmd;
5518
5519 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
5520
5521 dcmd->cmd = MFI_CMD_DCMD;
5522 dcmd->cmd_status = 0x0;
5523 dcmd->sge_count = 0;
5524 dcmd->flags = cpu_to_le16(MFI_FRAME_DIR_NONE);
5525 dcmd->timeout = 0;
5526 dcmd->pad_0 = 0;
5527 dcmd->data_xfer_len = 0;
5528 dcmd->opcode = cpu_to_le32(opcode);
5529
5530 if (megasas_issue_blocked_cmd(instance, cmd, 30))
5531 dev_err(&instance->pdev->dev, "Command timedout"
5532 "from %s\n", __func__);
5533
5534 megasas_return_cmd(instance, cmd);
5535
5536 return;
5537 }
5538
5539 #ifdef CONFIG_PM
5540 /**
5541 * megasas_suspend - driver suspend entry point
5542 * @pdev: PCI device structure
5543 * @state: PCI power state to suspend routine
5544 */
5545 static int
5546 megasas_suspend(struct pci_dev *pdev, pm_message_t state)
5547 {
5548 struct Scsi_Host *host;
5549 struct megasas_instance *instance;
5550
5551 instance = pci_get_drvdata(pdev);
5552 host = instance->host;
5553 instance->unload = 1;
5554
5555 /* Shutdown SR-IOV heartbeat timer */
5556 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
5557 del_timer_sync(&instance->sriov_heartbeat_timer);
5558
5559 megasas_flush_cache(instance);
5560 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
5561
5562 /* cancel the delayed work if this work still in queue */
5563 if (instance->ev != NULL) {
5564 struct megasas_aen_event *ev = instance->ev;
5565 cancel_delayed_work_sync(&ev->hotplug_work);
5566 instance->ev = NULL;
5567 }
5568
5569 tasklet_kill(&instance->isr_tasklet);
5570
5571 pci_set_drvdata(instance->pdev, instance);
5572 instance->instancet->disable_intr(instance);
5573
5574 megasas_destroy_irqs(instance);
5575
5576 if (instance->msix_vectors)
5577 pci_disable_msix(instance->pdev);
5578
5579 pci_save_state(pdev);
5580 pci_disable_device(pdev);
5581
5582 pci_set_power_state(pdev, pci_choose_state(pdev, state));
5583
5584 return 0;
5585 }
5586
5587 /**
5588 * megasas_resume- driver resume entry point
5589 * @pdev: PCI device structure
5590 */
5591 static int
5592 megasas_resume(struct pci_dev *pdev)
5593 {
5594 int rval;
5595 struct Scsi_Host *host;
5596 struct megasas_instance *instance;
5597
5598 instance = pci_get_drvdata(pdev);
5599 host = instance->host;
5600 pci_set_power_state(pdev, PCI_D0);
5601 pci_enable_wake(pdev, PCI_D0, 0);
5602 pci_restore_state(pdev);
5603
5604 /*
5605 * PCI prepping: enable device set bus mastering and dma mask
5606 */
5607 rval = pci_enable_device_mem(pdev);
5608
5609 if (rval) {
5610 printk(KERN_ERR "megasas: Enable device failed\n");
5611 return rval;
5612 }
5613
5614 pci_set_master(pdev);
5615
5616 if (megasas_set_dma_mask(pdev))
5617 goto fail_set_dma_mask;
5618
5619 /*
5620 * Initialize MFI Firmware
5621 */
5622
5623 atomic_set(&instance->fw_outstanding, 0);
5624
5625 /*
5626 * We expect the FW state to be READY
5627 */
5628 if (megasas_transition_to_ready(instance, 0))
5629 goto fail_ready_state;
5630
5631 /* Now re-enable MSI-X */
5632 if (instance->msix_vectors &&
5633 pci_enable_msix_exact(instance->pdev, instance->msixentry,
5634 instance->msix_vectors))
5635 goto fail_reenable_msix;
5636
5637 switch (instance->pdev->device) {
5638 case PCI_DEVICE_ID_LSI_FUSION:
5639 case PCI_DEVICE_ID_LSI_PLASMA:
5640 case PCI_DEVICE_ID_LSI_INVADER:
5641 case PCI_DEVICE_ID_LSI_FURY:
5642 {
5643 megasas_reset_reply_desc(instance);
5644 if (megasas_ioc_init_fusion(instance)) {
5645 megasas_free_cmds(instance);
5646 megasas_free_cmds_fusion(instance);
5647 goto fail_init_mfi;
5648 }
5649 if (!megasas_get_map_info(instance))
5650 megasas_sync_map_info(instance);
5651 }
5652 break;
5653 default:
5654 *instance->producer = 0;
5655 *instance->consumer = 0;
5656 if (megasas_issue_init_mfi(instance))
5657 goto fail_init_mfi;
5658 break;
5659 }
5660
5661 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
5662 (unsigned long)instance);
5663
5664 if (instance->msix_vectors ?
5665 megasas_setup_irqs_msix(instance, 0) :
5666 megasas_setup_irqs_ioapic(instance))
5667 goto fail_init_mfi;
5668
5669 /* Re-launch SR-IOV heartbeat timer */
5670 if (instance->requestorId) {
5671 if (!megasas_sriov_start_heartbeat(instance, 0))
5672 megasas_start_timer(instance,
5673 &instance->sriov_heartbeat_timer,
5674 megasas_sriov_heartbeat_handler,
5675 MEGASAS_SRIOV_HEARTBEAT_INTERVAL_VF);
5676 else {
5677 instance->skip_heartbeat_timer_del = 1;
5678 goto fail_init_mfi;
5679 }
5680 }
5681
5682 instance->instancet->enable_intr(instance);
5683 instance->unload = 0;
5684
5685 /*
5686 * Initiate AEN (Asynchronous Event Notification)
5687 */
5688 if (megasas_start_aen(instance))
5689 printk(KERN_ERR "megasas: Start AEN failed\n");
5690
5691 return 0;
5692
5693 fail_init_mfi:
5694 if (instance->evt_detail)
5695 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
5696 instance->evt_detail,
5697 instance->evt_detail_h);
5698
5699 if (instance->producer)
5700 pci_free_consistent(pdev, sizeof(u32), instance->producer,
5701 instance->producer_h);
5702 if (instance->consumer)
5703 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
5704 instance->consumer_h);
5705 scsi_host_put(host);
5706
5707 fail_set_dma_mask:
5708 fail_ready_state:
5709 fail_reenable_msix:
5710
5711 pci_disable_device(pdev);
5712
5713 return -ENODEV;
5714 }
5715 #else
5716 #define megasas_suspend NULL
5717 #define megasas_resume NULL
5718 #endif
5719
5720 /**
5721 * megasas_detach_one - PCI hot"un"plug entry point
5722 * @pdev: PCI device structure
5723 */
5724 static void megasas_detach_one(struct pci_dev *pdev)
5725 {
5726 int i;
5727 struct Scsi_Host *host;
5728 struct megasas_instance *instance;
5729 struct fusion_context *fusion;
5730
5731 instance = pci_get_drvdata(pdev);
5732 instance->unload = 1;
5733 host = instance->host;
5734 fusion = instance->ctrl_context;
5735
5736 /* Shutdown SR-IOV heartbeat timer */
5737 if (instance->requestorId && !instance->skip_heartbeat_timer_del)
5738 del_timer_sync(&instance->sriov_heartbeat_timer);
5739
5740 if (instance->fw_crash_state != UNAVAILABLE)
5741 megasas_free_host_crash_buffer(instance);
5742 scsi_remove_host(instance->host);
5743 megasas_flush_cache(instance);
5744 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
5745
5746 /* cancel the delayed work if this work still in queue*/
5747 if (instance->ev != NULL) {
5748 struct megasas_aen_event *ev = instance->ev;
5749 cancel_delayed_work_sync(&ev->hotplug_work);
5750 instance->ev = NULL;
5751 }
5752
5753 /* cancel all wait events */
5754 wake_up_all(&instance->int_cmd_wait_q);
5755
5756 tasklet_kill(&instance->isr_tasklet);
5757
5758 /*
5759 * Take the instance off the instance array. Note that we will not
5760 * decrement the max_index. We let this array be sparse array
5761 */
5762 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
5763 if (megasas_mgmt_info.instance[i] == instance) {
5764 megasas_mgmt_info.count--;
5765 megasas_mgmt_info.instance[i] = NULL;
5766
5767 break;
5768 }
5769 }
5770
5771 instance->instancet->disable_intr(instance);
5772
5773 megasas_destroy_irqs(instance);
5774
5775 if (instance->msix_vectors)
5776 pci_disable_msix(instance->pdev);
5777
5778 switch (instance->pdev->device) {
5779 case PCI_DEVICE_ID_LSI_FUSION:
5780 case PCI_DEVICE_ID_LSI_PLASMA:
5781 case PCI_DEVICE_ID_LSI_INVADER:
5782 case PCI_DEVICE_ID_LSI_FURY:
5783 megasas_release_fusion(instance);
5784 for (i = 0; i < 2 ; i++) {
5785 if (fusion->ld_map[i])
5786 dma_free_coherent(&instance->pdev->dev,
5787 fusion->max_map_sz,
5788 fusion->ld_map[i],
5789 fusion->ld_map_phys[i]);
5790 if (fusion->ld_drv_map[i])
5791 free_pages((ulong)fusion->ld_drv_map[i],
5792 fusion->drv_map_pages);
5793 }
5794 free_pages((ulong)instance->ctrl_context,
5795 instance->ctrl_context_pages);
5796 break;
5797 default:
5798 megasas_release_mfi(instance);
5799 pci_free_consistent(pdev, sizeof(u32),
5800 instance->producer,
5801 instance->producer_h);
5802 pci_free_consistent(pdev, sizeof(u32),
5803 instance->consumer,
5804 instance->consumer_h);
5805 break;
5806 }
5807
5808 kfree(instance->ctrl_info);
5809
5810 if (instance->evt_detail)
5811 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
5812 instance->evt_detail, instance->evt_detail_h);
5813
5814 if (instance->vf_affiliation)
5815 pci_free_consistent(pdev, (MAX_LOGICAL_DRIVES + 1) *
5816 sizeof(struct MR_LD_VF_AFFILIATION),
5817 instance->vf_affiliation,
5818 instance->vf_affiliation_h);
5819
5820 if (instance->vf_affiliation_111)
5821 pci_free_consistent(pdev,
5822 sizeof(struct MR_LD_VF_AFFILIATION_111),
5823 instance->vf_affiliation_111,
5824 instance->vf_affiliation_111_h);
5825
5826 if (instance->hb_host_mem)
5827 pci_free_consistent(pdev, sizeof(struct MR_CTRL_HB_HOST_MEM),
5828 instance->hb_host_mem,
5829 instance->hb_host_mem_h);
5830
5831 if (instance->crash_dump_buf)
5832 pci_free_consistent(pdev, CRASH_DMA_BUF_SIZE,
5833 instance->crash_dump_buf, instance->crash_dump_h);
5834
5835 if (instance->system_info_buf)
5836 pci_free_consistent(pdev, sizeof(struct MR_DRV_SYSTEM_INFO),
5837 instance->system_info_buf, instance->system_info_h);
5838
5839 scsi_host_put(host);
5840
5841 pci_disable_device(pdev);
5842
5843 return;
5844 }
5845
5846 /**
5847 * megasas_shutdown - Shutdown entry point
5848 * @device: Generic device structure
5849 */
5850 static void megasas_shutdown(struct pci_dev *pdev)
5851 {
5852 struct megasas_instance *instance = pci_get_drvdata(pdev);
5853
5854 instance->unload = 1;
5855 megasas_flush_cache(instance);
5856 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
5857 instance->instancet->disable_intr(instance);
5858 megasas_destroy_irqs(instance);
5859
5860 if (instance->msix_vectors)
5861 pci_disable_msix(instance->pdev);
5862 }
5863
5864 /**
5865 * megasas_mgmt_open - char node "open" entry point
5866 */
5867 static int megasas_mgmt_open(struct inode *inode, struct file *filep)
5868 {
5869 /*
5870 * Allow only those users with admin rights
5871 */
5872 if (!capable(CAP_SYS_ADMIN))
5873 return -EACCES;
5874
5875 return 0;
5876 }
5877
5878 /**
5879 * megasas_mgmt_fasync - Async notifier registration from applications
5880 *
5881 * This function adds the calling process to a driver global queue. When an
5882 * event occurs, SIGIO will be sent to all processes in this queue.
5883 */
5884 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
5885 {
5886 int rc;
5887
5888 mutex_lock(&megasas_async_queue_mutex);
5889
5890 rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
5891
5892 mutex_unlock(&megasas_async_queue_mutex);
5893
5894 if (rc >= 0) {
5895 /* For sanity check when we get ioctl */
5896 filep->private_data = filep;
5897 return 0;
5898 }
5899
5900 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
5901
5902 return rc;
5903 }
5904
5905 /**
5906 * megasas_mgmt_poll - char node "poll" entry point
5907 * */
5908 static unsigned int megasas_mgmt_poll(struct file *file, poll_table *wait)
5909 {
5910 unsigned int mask;
5911 unsigned long flags;
5912 poll_wait(file, &megasas_poll_wait, wait);
5913 spin_lock_irqsave(&poll_aen_lock, flags);
5914 if (megasas_poll_wait_aen)
5915 mask = (POLLIN | POLLRDNORM);
5916
5917 else
5918 mask = 0;
5919 megasas_poll_wait_aen = 0;
5920 spin_unlock_irqrestore(&poll_aen_lock, flags);
5921 return mask;
5922 }
5923
5924 /*
5925 * megasas_set_crash_dump_params_ioctl:
5926 * Send CRASH_DUMP_MODE DCMD to all controllers
5927 * @cmd: MFI command frame
5928 */
5929
5930 static int megasas_set_crash_dump_params_ioctl(
5931 struct megasas_cmd *cmd)
5932 {
5933 struct megasas_instance *local_instance;
5934 int i, error = 0;
5935 int crash_support;
5936
5937 crash_support = cmd->frame->dcmd.mbox.w[0];
5938
5939 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
5940 local_instance = megasas_mgmt_info.instance[i];
5941 if (local_instance && local_instance->crash_dump_drv_support) {
5942 if ((local_instance->adprecovery ==
5943 MEGASAS_HBA_OPERATIONAL) &&
5944 !megasas_set_crash_dump_params(local_instance,
5945 crash_support)) {
5946 local_instance->crash_dump_app_support =
5947 crash_support;
5948 dev_info(&local_instance->pdev->dev,
5949 "Application firmware crash "
5950 "dump mode set success\n");
5951 error = 0;
5952 } else {
5953 dev_info(&local_instance->pdev->dev,
5954 "Application firmware crash "
5955 "dump mode set failed\n");
5956 error = -1;
5957 }
5958 }
5959 }
5960 return error;
5961 }
5962
5963 /**
5964 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW
5965 * @instance: Adapter soft state
5966 * @argp: User's ioctl packet
5967 */
5968 static int
5969 megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
5970 struct megasas_iocpacket __user * user_ioc,
5971 struct megasas_iocpacket *ioc)
5972 {
5973 struct megasas_sge32 *kern_sge32;
5974 struct megasas_cmd *cmd;
5975 void *kbuff_arr[MAX_IOCTL_SGE];
5976 dma_addr_t buf_handle = 0;
5977 int error = 0, i;
5978 void *sense = NULL;
5979 dma_addr_t sense_handle;
5980 unsigned long *sense_ptr;
5981
5982 memset(kbuff_arr, 0, sizeof(kbuff_arr));
5983
5984 if (ioc->sge_count > MAX_IOCTL_SGE) {
5985 printk(KERN_DEBUG "megasas: SGE count [%d] > max limit [%d]\n",
5986 ioc->sge_count, MAX_IOCTL_SGE);
5987 return -EINVAL;
5988 }
5989
5990 cmd = megasas_get_cmd(instance);
5991 if (!cmd) {
5992 printk(KERN_DEBUG "megasas: Failed to get a cmd packet\n");
5993 return -ENOMEM;
5994 }
5995
5996 /*
5997 * User's IOCTL packet has 2 frames (maximum). Copy those two
5998 * frames into our cmd's frames. cmd->frame's context will get
5999 * overwritten when we copy from user's frames. So set that value
6000 * alone separately
6001 */
6002 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
6003 cmd->frame->hdr.context = cpu_to_le32(cmd->index);
6004 cmd->frame->hdr.pad_0 = 0;
6005 cmd->frame->hdr.flags &= cpu_to_le16(~(MFI_FRAME_IEEE |
6006 MFI_FRAME_SGL64 |
6007 MFI_FRAME_SENSE64));
6008
6009 if (cmd->frame->dcmd.opcode == MR_DRIVER_SET_APP_CRASHDUMP_MODE) {
6010 error = megasas_set_crash_dump_params_ioctl(cmd);
6011 megasas_return_cmd(instance, cmd);
6012 return error;
6013 }
6014
6015 /*
6016 * The management interface between applications and the fw uses
6017 * MFI frames. E.g, RAID configuration changes, LD property changes
6018 * etc are accomplishes through different kinds of MFI frames. The
6019 * driver needs to care only about substituting user buffers with
6020 * kernel buffers in SGLs. The location of SGL is embedded in the
6021 * struct iocpacket itself.
6022 */
6023 kern_sge32 = (struct megasas_sge32 *)
6024 ((unsigned long)cmd->frame + ioc->sgl_off);
6025
6026 /*
6027 * For each user buffer, create a mirror buffer and copy in
6028 */
6029 for (i = 0; i < ioc->sge_count; i++) {
6030 if (!ioc->sgl[i].iov_len)
6031 continue;
6032
6033 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
6034 ioc->sgl[i].iov_len,
6035 &buf_handle, GFP_KERNEL);
6036 if (!kbuff_arr[i]) {
6037 printk(KERN_DEBUG "megasas: Failed to alloc "
6038 "kernel SGL buffer for IOCTL \n");
6039 error = -ENOMEM;
6040 goto out;
6041 }
6042
6043 /*
6044 * We don't change the dma_coherent_mask, so
6045 * pci_alloc_consistent only returns 32bit addresses
6046 */
6047 kern_sge32[i].phys_addr = cpu_to_le32(buf_handle);
6048 kern_sge32[i].length = cpu_to_le32(ioc->sgl[i].iov_len);
6049
6050 /*
6051 * We created a kernel buffer corresponding to the
6052 * user buffer. Now copy in from the user buffer
6053 */
6054 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
6055 (u32) (ioc->sgl[i].iov_len))) {
6056 error = -EFAULT;
6057 goto out;
6058 }
6059 }
6060
6061 if (ioc->sense_len) {
6062 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
6063 &sense_handle, GFP_KERNEL);
6064 if (!sense) {
6065 error = -ENOMEM;
6066 goto out;
6067 }
6068
6069 sense_ptr =
6070 (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off);
6071 *sense_ptr = cpu_to_le32(sense_handle);
6072 }
6073
6074 /*
6075 * Set the sync_cmd flag so that the ISR knows not to complete this
6076 * cmd to the SCSI mid-layer
6077 */
6078 cmd->sync_cmd = 1;
6079 megasas_issue_blocked_cmd(instance, cmd, 0);
6080 cmd->sync_cmd = 0;
6081
6082 if (instance->unload == 1) {
6083 dev_info(&instance->pdev->dev, "Driver unload is in progress "
6084 "don't submit data to application\n");
6085 goto out;
6086 }
6087 /*
6088 * copy out the kernel buffers to user buffers
6089 */
6090 for (i = 0; i < ioc->sge_count; i++) {
6091 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
6092 ioc->sgl[i].iov_len)) {
6093 error = -EFAULT;
6094 goto out;
6095 }
6096 }
6097
6098 /*
6099 * copy out the sense
6100 */
6101 if (ioc->sense_len) {
6102 /*
6103 * sense_ptr points to the location that has the user
6104 * sense buffer address
6105 */
6106 sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw +
6107 ioc->sense_off);
6108
6109 if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)),
6110 sense, ioc->sense_len)) {
6111 printk(KERN_ERR "megasas: Failed to copy out to user "
6112 "sense data\n");
6113 error = -EFAULT;
6114 goto out;
6115 }
6116 }
6117
6118 /*
6119 * copy the status codes returned by the fw
6120 */
6121 if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
6122 &cmd->frame->hdr.cmd_status, sizeof(u8))) {
6123 printk(KERN_DEBUG "megasas: Error copying out cmd_status\n");
6124 error = -EFAULT;
6125 }
6126
6127 out:
6128 if (sense) {
6129 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
6130 sense, sense_handle);
6131 }
6132
6133 for (i = 0; i < ioc->sge_count; i++) {
6134 if (kbuff_arr[i])
6135 dma_free_coherent(&instance->pdev->dev,
6136 le32_to_cpu(kern_sge32[i].length),
6137 kbuff_arr[i],
6138 le32_to_cpu(kern_sge32[i].phys_addr));
6139 kbuff_arr[i] = NULL;
6140 }
6141
6142 megasas_return_cmd(instance, cmd);
6143 return error;
6144 }
6145
6146 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
6147 {
6148 struct megasas_iocpacket __user *user_ioc =
6149 (struct megasas_iocpacket __user *)arg;
6150 struct megasas_iocpacket *ioc;
6151 struct megasas_instance *instance;
6152 int error;
6153 int i;
6154 unsigned long flags;
6155 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
6156
6157 ioc = kmalloc(sizeof(*ioc), GFP_KERNEL);
6158 if (!ioc)
6159 return -ENOMEM;
6160
6161 if (copy_from_user(ioc, user_ioc, sizeof(*ioc))) {
6162 error = -EFAULT;
6163 goto out_kfree_ioc;
6164 }
6165
6166 instance = megasas_lookup_instance(ioc->host_no);
6167 if (!instance) {
6168 error = -ENODEV;
6169 goto out_kfree_ioc;
6170 }
6171
6172 /* Adjust ioctl wait time for VF mode */
6173 if (instance->requestorId)
6174 wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF;
6175
6176 /* Block ioctls in VF mode */
6177 if (instance->requestorId && !allow_vf_ioctls) {
6178 error = -ENODEV;
6179 goto out_kfree_ioc;
6180 }
6181
6182 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
6183 printk(KERN_ERR "Controller in crit error\n");
6184 error = -ENODEV;
6185 goto out_kfree_ioc;
6186 }
6187
6188 if (instance->unload == 1) {
6189 error = -ENODEV;
6190 goto out_kfree_ioc;
6191 }
6192
6193 if (down_interruptible(&instance->ioctl_sem)) {
6194 error = -ERESTARTSYS;
6195 goto out_kfree_ioc;
6196 }
6197
6198 for (i = 0; i < wait_time; i++) {
6199
6200 spin_lock_irqsave(&instance->hba_lock, flags);
6201 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
6202 spin_unlock_irqrestore(&instance->hba_lock, flags);
6203 break;
6204 }
6205 spin_unlock_irqrestore(&instance->hba_lock, flags);
6206
6207 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
6208 printk(KERN_NOTICE "megasas: waiting"
6209 "for controller reset to finish\n");
6210 }
6211
6212 msleep(1000);
6213 }
6214
6215 spin_lock_irqsave(&instance->hba_lock, flags);
6216 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
6217 spin_unlock_irqrestore(&instance->hba_lock, flags);
6218
6219 printk(KERN_ERR "megaraid_sas: timed out while"
6220 "waiting for HBA to recover\n");
6221 error = -ENODEV;
6222 goto out_up;
6223 }
6224 spin_unlock_irqrestore(&instance->hba_lock, flags);
6225
6226 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
6227 out_up:
6228 up(&instance->ioctl_sem);
6229
6230 out_kfree_ioc:
6231 kfree(ioc);
6232 return error;
6233 }
6234
6235 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
6236 {
6237 struct megasas_instance *instance;
6238 struct megasas_aen aen;
6239 int error;
6240 int i;
6241 unsigned long flags;
6242 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
6243
6244 if (file->private_data != file) {
6245 printk(KERN_DEBUG "megasas: fasync_helper was not "
6246 "called first\n");
6247 return -EINVAL;
6248 }
6249
6250 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
6251 return -EFAULT;
6252
6253 instance = megasas_lookup_instance(aen.host_no);
6254
6255 if (!instance)
6256 return -ENODEV;
6257
6258 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
6259 return -ENODEV;
6260 }
6261
6262 if (instance->unload == 1) {
6263 return -ENODEV;
6264 }
6265
6266 for (i = 0; i < wait_time; i++) {
6267
6268 spin_lock_irqsave(&instance->hba_lock, flags);
6269 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
6270 spin_unlock_irqrestore(&instance->hba_lock,
6271 flags);
6272 break;
6273 }
6274
6275 spin_unlock_irqrestore(&instance->hba_lock, flags);
6276
6277 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
6278 printk(KERN_NOTICE "megasas: waiting for"
6279 "controller reset to finish\n");
6280 }
6281
6282 msleep(1000);
6283 }
6284
6285 spin_lock_irqsave(&instance->hba_lock, flags);
6286 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
6287 spin_unlock_irqrestore(&instance->hba_lock, flags);
6288 printk(KERN_ERR "megaraid_sas: timed out while waiting"
6289 "for HBA to recover.\n");
6290 return -ENODEV;
6291 }
6292 spin_unlock_irqrestore(&instance->hba_lock, flags);
6293
6294 mutex_lock(&instance->aen_mutex);
6295 error = megasas_register_aen(instance, aen.seq_num,
6296 aen.class_locale_word);
6297 mutex_unlock(&instance->aen_mutex);
6298 return error;
6299 }
6300
6301 /**
6302 * megasas_mgmt_ioctl - char node ioctl entry point
6303 */
6304 static long
6305 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
6306 {
6307 switch (cmd) {
6308 case MEGASAS_IOC_FIRMWARE:
6309 return megasas_mgmt_ioctl_fw(file, arg);
6310
6311 case MEGASAS_IOC_GET_AEN:
6312 return megasas_mgmt_ioctl_aen(file, arg);
6313 }
6314
6315 return -ENOTTY;
6316 }
6317
6318 #ifdef CONFIG_COMPAT
6319 static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg)
6320 {
6321 struct compat_megasas_iocpacket __user *cioc =
6322 (struct compat_megasas_iocpacket __user *)arg;
6323 struct megasas_iocpacket __user *ioc =
6324 compat_alloc_user_space(sizeof(struct megasas_iocpacket));
6325 int i;
6326 int error = 0;
6327 compat_uptr_t ptr;
6328
6329 if (clear_user(ioc, sizeof(*ioc)))
6330 return -EFAULT;
6331
6332 if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) ||
6333 copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) ||
6334 copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) ||
6335 copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) ||
6336 copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) ||
6337 copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32)))
6338 return -EFAULT;
6339
6340 /*
6341 * The sense_ptr is used in megasas_mgmt_fw_ioctl only when
6342 * sense_len is not null, so prepare the 64bit value under
6343 * the same condition.
6344 */
6345 if (ioc->sense_len) {
6346 void __user **sense_ioc_ptr =
6347 (void __user **)(ioc->frame.raw + ioc->sense_off);
6348 compat_uptr_t *sense_cioc_ptr =
6349 (compat_uptr_t *)(cioc->frame.raw + cioc->sense_off);
6350 if (get_user(ptr, sense_cioc_ptr) ||
6351 put_user(compat_ptr(ptr), sense_ioc_ptr))
6352 return -EFAULT;
6353 }
6354
6355 for (i = 0; i < MAX_IOCTL_SGE; i++) {
6356 if (get_user(ptr, &cioc->sgl[i].iov_base) ||
6357 put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) ||
6358 copy_in_user(&ioc->sgl[i].iov_len,
6359 &cioc->sgl[i].iov_len, sizeof(compat_size_t)))
6360 return -EFAULT;
6361 }
6362
6363 error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc);
6364
6365 if (copy_in_user(&cioc->frame.hdr.cmd_status,
6366 &ioc->frame.hdr.cmd_status, sizeof(u8))) {
6367 printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n");
6368 return -EFAULT;
6369 }
6370 return error;
6371 }
6372
6373 static long
6374 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
6375 unsigned long arg)
6376 {
6377 switch (cmd) {
6378 case MEGASAS_IOC_FIRMWARE32:
6379 return megasas_mgmt_compat_ioctl_fw(file, arg);
6380 case MEGASAS_IOC_GET_AEN:
6381 return megasas_mgmt_ioctl_aen(file, arg);
6382 }
6383
6384 return -ENOTTY;
6385 }
6386 #endif
6387
6388 /*
6389 * File operations structure for management interface
6390 */
6391 static const struct file_operations megasas_mgmt_fops = {
6392 .owner = THIS_MODULE,
6393 .open = megasas_mgmt_open,
6394 .fasync = megasas_mgmt_fasync,
6395 .unlocked_ioctl = megasas_mgmt_ioctl,
6396 .poll = megasas_mgmt_poll,
6397 #ifdef CONFIG_COMPAT
6398 .compat_ioctl = megasas_mgmt_compat_ioctl,
6399 #endif
6400 .llseek = noop_llseek,
6401 };
6402
6403 /*
6404 * PCI hotplug support registration structure
6405 */
6406 static struct pci_driver megasas_pci_driver = {
6407
6408 .name = "megaraid_sas",
6409 .id_table = megasas_pci_table,
6410 .probe = megasas_probe_one,
6411 .remove = megasas_detach_one,
6412 .suspend = megasas_suspend,
6413 .resume = megasas_resume,
6414 .shutdown = megasas_shutdown,
6415 };
6416
6417 /*
6418 * Sysfs driver attributes
6419 */
6420 static ssize_t megasas_sysfs_show_version(struct device_driver *dd, char *buf)
6421 {
6422 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
6423 MEGASAS_VERSION);
6424 }
6425
6426 static DRIVER_ATTR(version, S_IRUGO, megasas_sysfs_show_version, NULL);
6427
6428 static ssize_t
6429 megasas_sysfs_show_release_date(struct device_driver *dd, char *buf)
6430 {
6431 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
6432 MEGASAS_RELDATE);
6433 }
6434
6435 static DRIVER_ATTR(release_date, S_IRUGO, megasas_sysfs_show_release_date, NULL);
6436
6437 static ssize_t
6438 megasas_sysfs_show_support_poll_for_event(struct device_driver *dd, char *buf)
6439 {
6440 return sprintf(buf, "%u\n", support_poll_for_event);
6441 }
6442
6443 static DRIVER_ATTR(support_poll_for_event, S_IRUGO,
6444 megasas_sysfs_show_support_poll_for_event, NULL);
6445
6446 static ssize_t
6447 megasas_sysfs_show_support_device_change(struct device_driver *dd, char *buf)
6448 {
6449 return sprintf(buf, "%u\n", support_device_change);
6450 }
6451
6452 static DRIVER_ATTR(support_device_change, S_IRUGO,
6453 megasas_sysfs_show_support_device_change, NULL);
6454
6455 static ssize_t
6456 megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf)
6457 {
6458 return sprintf(buf, "%u\n", megasas_dbg_lvl);
6459 }
6460
6461 static ssize_t
6462 megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count)
6463 {
6464 int retval = count;
6465 if(sscanf(buf,"%u",&megasas_dbg_lvl)<1){
6466 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
6467 retval = -EINVAL;
6468 }
6469 return retval;
6470 }
6471
6472 static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUSR, megasas_sysfs_show_dbg_lvl,
6473 megasas_sysfs_set_dbg_lvl);
6474
6475 static void
6476 megasas_aen_polling(struct work_struct *work)
6477 {
6478 struct megasas_aen_event *ev =
6479 container_of(work, struct megasas_aen_event, hotplug_work.work);
6480 struct megasas_instance *instance = ev->instance;
6481 union megasas_evt_class_locale class_locale;
6482 struct Scsi_Host *host;
6483 struct scsi_device *sdev1;
6484 u16 pd_index = 0;
6485 u16 ld_index = 0;
6486 int i, j, doscan = 0;
6487 u32 seq_num, wait_time = MEGASAS_RESET_WAIT_TIME;
6488 int error;
6489
6490 if (!instance) {
6491 printk(KERN_ERR "invalid instance!\n");
6492 kfree(ev);
6493 return;
6494 }
6495
6496 /* Adjust event workqueue thread wait time for VF mode */
6497 if (instance->requestorId)
6498 wait_time = MEGASAS_ROUTINE_WAIT_TIME_VF;
6499
6500 /* Don't run the event workqueue thread if OCR is running */
6501 for (i = 0; i < wait_time; i++) {
6502 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL)
6503 break;
6504 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
6505 printk(KERN_NOTICE "megasas: %s waiting for "
6506 "controller reset to finish for scsi%d\n",
6507 __func__, instance->host->host_no);
6508 }
6509 msleep(1000);
6510 }
6511
6512 instance->ev = NULL;
6513 host = instance->host;
6514 if (instance->evt_detail) {
6515
6516 switch (le32_to_cpu(instance->evt_detail->code)) {
6517 case MR_EVT_PD_INSERTED:
6518 if (megasas_get_pd_list(instance) == 0) {
6519 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
6520 for (j = 0;
6521 j < MEGASAS_MAX_DEV_PER_CHANNEL;
6522 j++) {
6523
6524 pd_index =
6525 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
6526
6527 sdev1 =
6528 scsi_device_lookup(host, i, j, 0);
6529
6530 if (instance->pd_list[pd_index].driveState
6531 == MR_PD_STATE_SYSTEM) {
6532 if (!sdev1) {
6533 scsi_add_device(host, i, j, 0);
6534 }
6535
6536 if (sdev1)
6537 scsi_device_put(sdev1);
6538 }
6539 }
6540 }
6541 }
6542 doscan = 0;
6543 break;
6544
6545 case MR_EVT_PD_REMOVED:
6546 if (megasas_get_pd_list(instance) == 0) {
6547 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
6548 for (j = 0;
6549 j < MEGASAS_MAX_DEV_PER_CHANNEL;
6550 j++) {
6551
6552 pd_index =
6553 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
6554
6555 sdev1 =
6556 scsi_device_lookup(host, i, j, 0);
6557
6558 if (instance->pd_list[pd_index].driveState
6559 == MR_PD_STATE_SYSTEM) {
6560 if (sdev1) {
6561 scsi_device_put(sdev1);
6562 }
6563 } else {
6564 if (sdev1) {
6565 scsi_remove_device(sdev1);
6566 scsi_device_put(sdev1);
6567 }
6568 }
6569 }
6570 }
6571 }
6572 doscan = 0;
6573 break;
6574
6575 case MR_EVT_LD_OFFLINE:
6576 case MR_EVT_CFG_CLEARED:
6577 case MR_EVT_LD_DELETED:
6578 if (!instance->requestorId ||
6579 (instance->requestorId &&
6580 megasas_get_ld_vf_affiliation(instance, 0))) {
6581 if (megasas_ld_list_query(instance,
6582 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
6583 megasas_get_ld_list(instance);
6584 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
6585 for (j = 0;
6586 j < MEGASAS_MAX_DEV_PER_CHANNEL;
6587 j++) {
6588
6589 ld_index =
6590 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
6591
6592 sdev1 = scsi_device_lookup(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
6593
6594 if (instance->ld_ids[ld_index]
6595 != 0xff) {
6596 if (sdev1)
6597 scsi_device_put(sdev1);
6598 } else {
6599 if (sdev1) {
6600 scsi_remove_device(sdev1);
6601 scsi_device_put(sdev1);
6602 }
6603 }
6604 }
6605 }
6606 doscan = 0;
6607 }
6608 break;
6609 case MR_EVT_LD_CREATED:
6610 if (!instance->requestorId ||
6611 (instance->requestorId &&
6612 megasas_get_ld_vf_affiliation(instance, 0))) {
6613 if (megasas_ld_list_query(instance,
6614 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
6615 megasas_get_ld_list(instance);
6616 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
6617 for (j = 0;
6618 j < MEGASAS_MAX_DEV_PER_CHANNEL;
6619 j++) {
6620 ld_index =
6621 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
6622
6623 sdev1 = scsi_device_lookup(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
6624
6625 if (instance->ld_ids[ld_index]
6626 != 0xff) {
6627 if (!sdev1)
6628 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
6629 }
6630 if (sdev1)
6631 scsi_device_put(sdev1);
6632 }
6633 }
6634 doscan = 0;
6635 }
6636 break;
6637 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
6638 case MR_EVT_FOREIGN_CFG_IMPORTED:
6639 case MR_EVT_LD_STATE_CHANGE:
6640 doscan = 1;
6641 break;
6642 default:
6643 doscan = 0;
6644 break;
6645 }
6646 } else {
6647 printk(KERN_ERR "invalid evt_detail!\n");
6648 kfree(ev);
6649 return;
6650 }
6651
6652 if (doscan) {
6653 printk(KERN_INFO "megaraid_sas: scanning for scsi%d...\n",
6654 instance->host->host_no);
6655 if (megasas_get_pd_list(instance) == 0) {
6656 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
6657 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
6658 pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j;
6659 sdev1 = scsi_device_lookup(host, i, j, 0);
6660 if (instance->pd_list[pd_index].driveState ==
6661 MR_PD_STATE_SYSTEM) {
6662 if (!sdev1) {
6663 scsi_add_device(host, i, j, 0);
6664 }
6665 if (sdev1)
6666 scsi_device_put(sdev1);
6667 } else {
6668 if (sdev1) {
6669 scsi_remove_device(sdev1);
6670 scsi_device_put(sdev1);
6671 }
6672 }
6673 }
6674 }
6675 }
6676
6677 if (!instance->requestorId ||
6678 (instance->requestorId &&
6679 megasas_get_ld_vf_affiliation(instance, 0))) {
6680 if (megasas_ld_list_query(instance,
6681 MR_LD_QUERY_TYPE_EXPOSED_TO_HOST))
6682 megasas_get_ld_list(instance);
6683 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
6684 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL;
6685 j++) {
6686 ld_index =
6687 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
6688
6689 sdev1 = scsi_device_lookup(host,
6690 MEGASAS_MAX_PD_CHANNELS + i, j, 0);
6691 if (instance->ld_ids[ld_index]
6692 != 0xff) {
6693 if (!sdev1)
6694 scsi_add_device(host, MEGASAS_MAX_PD_CHANNELS + i, j, 0);
6695 else
6696 scsi_device_put(sdev1);
6697 } else {
6698 if (sdev1) {
6699 scsi_remove_device(sdev1);
6700 scsi_device_put(sdev1);
6701 }
6702 }
6703 }
6704 }
6705 }
6706 }
6707
6708 if ( instance->aen_cmd != NULL ) {
6709 kfree(ev);
6710 return ;
6711 }
6712
6713 seq_num = le32_to_cpu(instance->evt_detail->seq_num) + 1;
6714
6715 /* Register AEN with FW for latest sequence number plus 1 */
6716 class_locale.members.reserved = 0;
6717 class_locale.members.locale = MR_EVT_LOCALE_ALL;
6718 class_locale.members.class = MR_EVT_CLASS_DEBUG;
6719 mutex_lock(&instance->aen_mutex);
6720 error = megasas_register_aen(instance, seq_num,
6721 class_locale.word);
6722 mutex_unlock(&instance->aen_mutex);
6723
6724 if (error)
6725 printk(KERN_ERR "register aen failed error %x\n", error);
6726
6727 kfree(ev);
6728 }
6729
6730 /**
6731 * megasas_init - Driver load entry point
6732 */
6733 static int __init megasas_init(void)
6734 {
6735 int rval;
6736
6737 /*
6738 * Announce driver version and other information
6739 */
6740 pr_info("megasas: %s\n", MEGASAS_VERSION);
6741
6742 spin_lock_init(&poll_aen_lock);
6743
6744 support_poll_for_event = 2;
6745 support_device_change = 1;
6746
6747 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
6748
6749 /*
6750 * Register character device node
6751 */
6752 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
6753
6754 if (rval < 0) {
6755 printk(KERN_DEBUG "megasas: failed to open device node\n");
6756 return rval;
6757 }
6758
6759 megasas_mgmt_majorno = rval;
6760
6761 /*
6762 * Register ourselves as PCI hotplug module
6763 */
6764 rval = pci_register_driver(&megasas_pci_driver);
6765
6766 if (rval) {
6767 printk(KERN_DEBUG "megasas: PCI hotplug registration failed \n");
6768 goto err_pcidrv;
6769 }
6770
6771 rval = driver_create_file(&megasas_pci_driver.driver,
6772 &driver_attr_version);
6773 if (rval)
6774 goto err_dcf_attr_ver;
6775
6776 rval = driver_create_file(&megasas_pci_driver.driver,
6777 &driver_attr_release_date);
6778 if (rval)
6779 goto err_dcf_rel_date;
6780
6781 rval = driver_create_file(&megasas_pci_driver.driver,
6782 &driver_attr_support_poll_for_event);
6783 if (rval)
6784 goto err_dcf_support_poll_for_event;
6785
6786 rval = driver_create_file(&megasas_pci_driver.driver,
6787 &driver_attr_dbg_lvl);
6788 if (rval)
6789 goto err_dcf_dbg_lvl;
6790 rval = driver_create_file(&megasas_pci_driver.driver,
6791 &driver_attr_support_device_change);
6792 if (rval)
6793 goto err_dcf_support_device_change;
6794
6795 return rval;
6796
6797 err_dcf_support_device_change:
6798 driver_remove_file(&megasas_pci_driver.driver,
6799 &driver_attr_dbg_lvl);
6800 err_dcf_dbg_lvl:
6801 driver_remove_file(&megasas_pci_driver.driver,
6802 &driver_attr_support_poll_for_event);
6803 err_dcf_support_poll_for_event:
6804 driver_remove_file(&megasas_pci_driver.driver,
6805 &driver_attr_release_date);
6806 err_dcf_rel_date:
6807 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
6808 err_dcf_attr_ver:
6809 pci_unregister_driver(&megasas_pci_driver);
6810 err_pcidrv:
6811 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
6812 return rval;
6813 }
6814
6815 /**
6816 * megasas_exit - Driver unload entry point
6817 */
6818 static void __exit megasas_exit(void)
6819 {
6820 driver_remove_file(&megasas_pci_driver.driver,
6821 &driver_attr_dbg_lvl);
6822 driver_remove_file(&megasas_pci_driver.driver,
6823 &driver_attr_support_poll_for_event);
6824 driver_remove_file(&megasas_pci_driver.driver,
6825 &driver_attr_support_device_change);
6826 driver_remove_file(&megasas_pci_driver.driver,
6827 &driver_attr_release_date);
6828 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
6829
6830 pci_unregister_driver(&megasas_pci_driver);
6831 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
6832 }
6833
6834 module_init(megasas_init);
6835 module_exit(megasas_exit);
Linux with added FPC-III support