2 * Linux MegaRAID driver for SAS based RAID controllers
4 * Copyright (c) 2003-2012 LSI Corporation.
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version 2
9 * of the License, or (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, write to the Free Software
18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 * FILE: megaraid_sas_base.c
21 * Version : v06.506.00.00-rc1
23 * Authors: LSI Corporation
27 * Adam Radford <linuxraid@lsi.com>
29 * Send feedback to: <megaraidlinux@lsi.com>
31 * Mail to: LSI Corporation, 1621 Barber Lane, Milpitas, CA 95035
35 #include <linux/kernel.h>
36 #include <linux/types.h>
37 #include <linux/pci.h>
38 #include <linux/list.h>
39 #include <linux/moduleparam.h>
40 #include <linux/module.h>
41 #include <linux/spinlock.h>
42 #include <linux/interrupt.h>
43 #include <linux/delay.h>
44 #include <linux/uio.h>
45 #include <linux/slab.h>
46 #include <asm/uaccess.h>
48 #include <linux/compat.h>
49 #include <linux/blkdev.h>
50 #include <linux/mutex.h>
51 #include <linux/poll.h>
53 #include <scsi/scsi.h>
54 #include <scsi/scsi_cmnd.h>
55 #include <scsi/scsi_device.h>
56 #include <scsi/scsi_host.h>
57 #include <scsi/scsi_tcq.h>
58 #include "megaraid_sas_fusion.h"
59 #include "megaraid_sas.h"
62 * Number of sectors per IO command
63 * Will be set in megasas_init_mfi if user does not provide
65 static unsigned int max_sectors;
66 module_param_named(max_sectors, max_sectors, int, 0);
67 MODULE_PARM_DESC(max_sectors,
68 "Maximum number of sectors per IO command");
70 static int msix_disable;
71 module_param(msix_disable, int, S_IRUGO);
72 MODULE_PARM_DESC(msix_disable, "Disable MSI-X interrupt handling. Default: 0");
74 static unsigned int msix_vectors;
75 module_param(msix_vectors, int, S_IRUGO);
76 MODULE_PARM_DESC(msix_vectors, "MSI-X max vector count. Default: Set by FW");
78 static int throttlequeuedepth = MEGASAS_THROTTLE_QUEUE_DEPTH;
79 module_param(throttlequeuedepth, int, S_IRUGO);
80 MODULE_PARM_DESC(throttlequeuedepth,
81 "Adapter queue depth when throttled due to I/O timeout. Default: 16");
83 int resetwaittime = MEGASAS_RESET_WAIT_TIME;
84 module_param(resetwaittime, int, S_IRUGO);
85 MODULE_PARM_DESC(resetwaittime, "Wait time in seconds after I/O timeout "
86 "before resetting adapter. Default: 180");
88 MODULE_LICENSE("GPL");
89 MODULE_VERSION(MEGASAS_VERSION);
90 MODULE_AUTHOR("megaraidlinux@lsi.com");
91 MODULE_DESCRIPTION("LSI MegaRAID SAS Driver");
93 int megasas_transition_to_ready(struct megasas_instance *instance, int ocr);
94 static int megasas_get_pd_list(struct megasas_instance *instance);
95 static int megasas_issue_init_mfi(struct megasas_instance *instance);
96 static int megasas_register_aen(struct megasas_instance *instance,
97 u32 seq_num, u32 class_locale_word);
99 * PCI ID table for all supported controllers
101 static struct pci_device_id megasas_pci_table[] = {
103 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1064R)},
105 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078R)},
107 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078DE)},
109 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS1078GEN2)},
111 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0079GEN2)},
113 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0073SKINNY)},
115 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_SAS0071SKINNY)},
117 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_VERDE_ZCR)},
118 /* xscale IOP, vega */
119 {PCI_DEVICE(PCI_VENDOR_ID_DELL, PCI_DEVICE_ID_DELL_PERC5)},
121 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_FUSION)},
123 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC, PCI_DEVICE_ID_LSI_INVADER)},
128 MODULE_DEVICE_TABLE(pci, megasas_pci_table);
130 static int megasas_mgmt_majorno;
131 static struct megasas_mgmt_info megasas_mgmt_info;
132 static struct fasync_struct *megasas_async_queue;
133 static DEFINE_MUTEX(megasas_async_queue_mutex);
135 static int megasas_poll_wait_aen;
136 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait);
137 static u32 support_poll_for_event;
139 static u32 support_device_change;
141 /* define lock for aen poll */
142 spinlock_t poll_aen_lock;
145 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
148 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs);
150 megasas_adp_reset_gen2(struct megasas_instance *instance,
151 struct megasas_register_set __iomem *reg_set);
152 static irqreturn_t megasas_isr(int irq, void *devp);
154 megasas_init_adapter_mfi(struct megasas_instance *instance);
156 megasas_build_and_issue_cmd(struct megasas_instance *instance,
157 struct scsi_cmnd *scmd);
158 static void megasas_complete_cmd_dpc(unsigned long instance_addr);
160 megasas_release_fusion(struct megasas_instance *instance);
162 megasas_ioc_init_fusion(struct megasas_instance *instance);
164 megasas_free_cmds_fusion(struct megasas_instance *instance);
166 megasas_get_map_info(struct megasas_instance *instance);
168 megasas_sync_map_info(struct megasas_instance *instance);
170 wait_and_poll(struct megasas_instance *instance, struct megasas_cmd *cmd);
171 void megasas_reset_reply_desc(struct megasas_instance *instance);
172 u8 MR_ValidateMapInfo(struct MR_FW_RAID_MAP_ALL *map,
173 struct LD_LOAD_BALANCE_INFO *lbInfo);
174 int megasas_reset_fusion(struct Scsi_Host *shost);
175 void megasas_fusion_ocr_wq(struct work_struct *work);
178 megasas_issue_dcmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
180 instance->instancet->fire_cmd(instance,
181 cmd->frame_phys_addr, 0, instance->reg_set);
185 * megasas_get_cmd - Get a command from the free pool
186 * @instance: Adapter soft state
188 * Returns a free command from the pool
190 struct megasas_cmd *megasas_get_cmd(struct megasas_instance
194 struct megasas_cmd *cmd = NULL;
196 spin_lock_irqsave(&instance->cmd_pool_lock, flags);
198 if (!list_empty(&instance->cmd_pool)) {
199 cmd = list_entry((&instance->cmd_pool)->next,
200 struct megasas_cmd, list);
201 list_del_init(&cmd->list);
203 printk(KERN_ERR "megasas: Command pool empty!\n");
206 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags);
211 * megasas_return_cmd - Return a cmd to free command pool
212 * @instance: Adapter soft state
213 * @cmd: Command packet to be returned to free command pool
216 megasas_return_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd)
220 spin_lock_irqsave(&instance->cmd_pool_lock, flags);
223 cmd->frame_count = 0;
224 if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) &&
225 (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) &&
227 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
228 list_add_tail(&cmd->list, &instance->cmd_pool);
230 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags);
235 * The following functions are defined for xscale
236 * (deviceid : 1064R, PERC5) controllers
240 * megasas_enable_intr_xscale - Enables interrupts
241 * @regs: MFI register set
244 megasas_enable_intr_xscale(struct megasas_register_set __iomem * regs)
246 writel(0, &(regs)->outbound_intr_mask);
248 /* Dummy readl to force pci flush */
249 readl(®s->outbound_intr_mask);
253 * megasas_disable_intr_xscale -Disables interrupt
254 * @regs: MFI register set
257 megasas_disable_intr_xscale(struct megasas_register_set __iomem * regs)
260 writel(mask, ®s->outbound_intr_mask);
261 /* Dummy readl to force pci flush */
262 readl(®s->outbound_intr_mask);
266 * megasas_read_fw_status_reg_xscale - returns the current FW status value
267 * @regs: MFI register set
270 megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem * regs)
272 return readl(&(regs)->outbound_msg_0);
275 * megasas_clear_interrupt_xscale - Check & clear interrupt
276 * @regs: MFI register set
279 megasas_clear_intr_xscale(struct megasas_register_set __iomem * regs)
284 * Check if it is our interrupt
286 status = readl(®s->outbound_intr_status);
288 if (status & MFI_OB_INTR_STATUS_MASK)
289 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
290 if (status & MFI_XSCALE_OMR0_CHANGE_INTERRUPT)
291 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
294 * Clear the interrupt by writing back the same value
297 writel(status, ®s->outbound_intr_status);
299 /* Dummy readl to force pci flush */
300 readl(®s->outbound_intr_status);
306 * megasas_fire_cmd_xscale - Sends command to the FW
307 * @frame_phys_addr : Physical address of cmd
308 * @frame_count : Number of frames for the command
309 * @regs : MFI register set
312 megasas_fire_cmd_xscale(struct megasas_instance *instance,
313 dma_addr_t frame_phys_addr,
315 struct megasas_register_set __iomem *regs)
318 spin_lock_irqsave(&instance->hba_lock, flags);
319 writel((frame_phys_addr >> 3)|(frame_count),
320 &(regs)->inbound_queue_port);
321 spin_unlock_irqrestore(&instance->hba_lock, flags);
325 * megasas_adp_reset_xscale - For controller reset
326 * @regs: MFI register set
329 megasas_adp_reset_xscale(struct megasas_instance *instance,
330 struct megasas_register_set __iomem *regs)
334 writel(MFI_ADP_RESET, ®s->inbound_doorbell);
336 for (i = 0; i < 3; i++)
337 msleep(1000); /* sleep for 3 secs */
339 pci_read_config_dword(instance->pdev, MFI_1068_PCSR_OFFSET, &pcidata);
340 printk(KERN_NOTICE "pcidata = %x\n", pcidata);
342 printk(KERN_NOTICE "mfi 1068 offset read=%x\n", pcidata);
344 pci_write_config_dword(instance->pdev,
345 MFI_1068_PCSR_OFFSET, pcidata);
347 for (i = 0; i < 2; i++)
348 msleep(1000); /* need to wait 2 secs again */
351 pci_read_config_dword(instance->pdev,
352 MFI_1068_FW_HANDSHAKE_OFFSET, &pcidata);
353 printk(KERN_NOTICE "1068 offset handshake read=%x\n", pcidata);
354 if ((pcidata & 0xffff0000) == MFI_1068_FW_READY) {
355 printk(KERN_NOTICE "1068 offset pcidt=%x\n", pcidata);
357 pci_write_config_dword(instance->pdev,
358 MFI_1068_FW_HANDSHAKE_OFFSET, pcidata);
365 * megasas_check_reset_xscale - For controller reset check
366 * @regs: MFI register set
369 megasas_check_reset_xscale(struct megasas_instance *instance,
370 struct megasas_register_set __iomem *regs)
373 consumer = *instance->consumer;
375 if ((instance->adprecovery != MEGASAS_HBA_OPERATIONAL) &&
376 (*instance->consumer == MEGASAS_ADPRESET_INPROG_SIGN)) {
382 static struct megasas_instance_template megasas_instance_template_xscale = {
384 .fire_cmd = megasas_fire_cmd_xscale,
385 .enable_intr = megasas_enable_intr_xscale,
386 .disable_intr = megasas_disable_intr_xscale,
387 .clear_intr = megasas_clear_intr_xscale,
388 .read_fw_status_reg = megasas_read_fw_status_reg_xscale,
389 .adp_reset = megasas_adp_reset_xscale,
390 .check_reset = megasas_check_reset_xscale,
391 .service_isr = megasas_isr,
392 .tasklet = megasas_complete_cmd_dpc,
393 .init_adapter = megasas_init_adapter_mfi,
394 .build_and_issue_cmd = megasas_build_and_issue_cmd,
395 .issue_dcmd = megasas_issue_dcmd,
399 * This is the end of set of functions & definitions specific
400 * to xscale (deviceid : 1064R, PERC5) controllers
404 * The following functions are defined for ppc (deviceid : 0x60)
409 * megasas_enable_intr_ppc - Enables interrupts
410 * @regs: MFI register set
413 megasas_enable_intr_ppc(struct megasas_register_set __iomem * regs)
415 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
417 writel(~0x80000000, &(regs)->outbound_intr_mask);
419 /* Dummy readl to force pci flush */
420 readl(®s->outbound_intr_mask);
424 * megasas_disable_intr_ppc - Disable interrupt
425 * @regs: MFI register set
428 megasas_disable_intr_ppc(struct megasas_register_set __iomem * regs)
430 u32 mask = 0xFFFFFFFF;
431 writel(mask, ®s->outbound_intr_mask);
432 /* Dummy readl to force pci flush */
433 readl(®s->outbound_intr_mask);
437 * megasas_read_fw_status_reg_ppc - returns the current FW status value
438 * @regs: MFI register set
441 megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem * regs)
443 return readl(&(regs)->outbound_scratch_pad);
447 * megasas_clear_interrupt_ppc - Check & clear interrupt
448 * @regs: MFI register set
451 megasas_clear_intr_ppc(struct megasas_register_set __iomem * regs)
453 u32 status, mfiStatus = 0;
456 * Check if it is our interrupt
458 status = readl(®s->outbound_intr_status);
460 if (status & MFI_REPLY_1078_MESSAGE_INTERRUPT)
461 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
463 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT)
464 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
467 * Clear the interrupt by writing back the same value
469 writel(status, ®s->outbound_doorbell_clear);
471 /* Dummy readl to force pci flush */
472 readl(®s->outbound_doorbell_clear);
478 * megasas_fire_cmd_ppc - Sends command to the FW
479 * @frame_phys_addr : Physical address of cmd
480 * @frame_count : Number of frames for the command
481 * @regs : MFI register set
484 megasas_fire_cmd_ppc(struct megasas_instance *instance,
485 dma_addr_t frame_phys_addr,
487 struct megasas_register_set __iomem *regs)
490 spin_lock_irqsave(&instance->hba_lock, flags);
491 writel((frame_phys_addr | (frame_count<<1))|1,
492 &(regs)->inbound_queue_port);
493 spin_unlock_irqrestore(&instance->hba_lock, flags);
497 * megasas_check_reset_ppc - For controller reset check
498 * @regs: MFI register set
501 megasas_check_reset_ppc(struct megasas_instance *instance,
502 struct megasas_register_set __iomem *regs)
504 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL)
510 static struct megasas_instance_template megasas_instance_template_ppc = {
512 .fire_cmd = megasas_fire_cmd_ppc,
513 .enable_intr = megasas_enable_intr_ppc,
514 .disable_intr = megasas_disable_intr_ppc,
515 .clear_intr = megasas_clear_intr_ppc,
516 .read_fw_status_reg = megasas_read_fw_status_reg_ppc,
517 .adp_reset = megasas_adp_reset_xscale,
518 .check_reset = megasas_check_reset_ppc,
519 .service_isr = megasas_isr,
520 .tasklet = megasas_complete_cmd_dpc,
521 .init_adapter = megasas_init_adapter_mfi,
522 .build_and_issue_cmd = megasas_build_and_issue_cmd,
523 .issue_dcmd = megasas_issue_dcmd,
527 * megasas_enable_intr_skinny - Enables interrupts
528 * @regs: MFI register set
531 megasas_enable_intr_skinny(struct megasas_register_set __iomem *regs)
533 writel(0xFFFFFFFF, &(regs)->outbound_intr_mask);
535 writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
537 /* Dummy readl to force pci flush */
538 readl(®s->outbound_intr_mask);
542 * megasas_disable_intr_skinny - Disables interrupt
543 * @regs: MFI register set
546 megasas_disable_intr_skinny(struct megasas_register_set __iomem *regs)
548 u32 mask = 0xFFFFFFFF;
549 writel(mask, ®s->outbound_intr_mask);
550 /* Dummy readl to force pci flush */
551 readl(®s->outbound_intr_mask);
555 * megasas_read_fw_status_reg_skinny - returns the current FW status value
556 * @regs: MFI register set
559 megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem *regs)
561 return readl(&(regs)->outbound_scratch_pad);
565 * megasas_clear_interrupt_skinny - Check & clear interrupt
566 * @regs: MFI register set
569 megasas_clear_intr_skinny(struct megasas_register_set __iomem *regs)
575 * Check if it is our interrupt
577 status = readl(®s->outbound_intr_status);
579 if (!(status & MFI_SKINNY_ENABLE_INTERRUPT_MASK)) {
584 * Check if it is our interrupt
586 if ((megasas_read_fw_status_reg_gen2(regs) & MFI_STATE_MASK) ==
588 mfiStatus = MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
590 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
593 * Clear the interrupt by writing back the same value
595 writel(status, ®s->outbound_intr_status);
598 * dummy read to flush PCI
600 readl(®s->outbound_intr_status);
606 * megasas_fire_cmd_skinny - Sends command to the FW
607 * @frame_phys_addr : Physical address of cmd
608 * @frame_count : Number of frames for the command
609 * @regs : MFI register set
612 megasas_fire_cmd_skinny(struct megasas_instance *instance,
613 dma_addr_t frame_phys_addr,
615 struct megasas_register_set __iomem *regs)
618 spin_lock_irqsave(&instance->hba_lock, flags);
619 writel(0, &(regs)->inbound_high_queue_port);
620 writel((frame_phys_addr | (frame_count<<1))|1,
621 &(regs)->inbound_low_queue_port);
622 spin_unlock_irqrestore(&instance->hba_lock, flags);
626 * megasas_check_reset_skinny - For controller reset check
627 * @regs: MFI register set
630 megasas_check_reset_skinny(struct megasas_instance *instance,
631 struct megasas_register_set __iomem *regs)
633 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL)
639 static struct megasas_instance_template megasas_instance_template_skinny = {
641 .fire_cmd = megasas_fire_cmd_skinny,
642 .enable_intr = megasas_enable_intr_skinny,
643 .disable_intr = megasas_disable_intr_skinny,
644 .clear_intr = megasas_clear_intr_skinny,
645 .read_fw_status_reg = megasas_read_fw_status_reg_skinny,
646 .adp_reset = megasas_adp_reset_gen2,
647 .check_reset = megasas_check_reset_skinny,
648 .service_isr = megasas_isr,
649 .tasklet = megasas_complete_cmd_dpc,
650 .init_adapter = megasas_init_adapter_mfi,
651 .build_and_issue_cmd = megasas_build_and_issue_cmd,
652 .issue_dcmd = megasas_issue_dcmd,
657 * The following functions are defined for gen2 (deviceid : 0x78 0x79)
662 * megasas_enable_intr_gen2 - Enables interrupts
663 * @regs: MFI register set
666 megasas_enable_intr_gen2(struct megasas_register_set __iomem *regs)
668 writel(0xFFFFFFFF, &(regs)->outbound_doorbell_clear);
670 /* write ~0x00000005 (4 & 1) to the intr mask*/
671 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK, &(regs)->outbound_intr_mask);
673 /* Dummy readl to force pci flush */
674 readl(®s->outbound_intr_mask);
678 * megasas_disable_intr_gen2 - Disables interrupt
679 * @regs: MFI register set
682 megasas_disable_intr_gen2(struct megasas_register_set __iomem *regs)
684 u32 mask = 0xFFFFFFFF;
685 writel(mask, ®s->outbound_intr_mask);
686 /* Dummy readl to force pci flush */
687 readl(®s->outbound_intr_mask);
691 * megasas_read_fw_status_reg_gen2 - returns the current FW status value
692 * @regs: MFI register set
695 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem *regs)
697 return readl(&(regs)->outbound_scratch_pad);
701 * megasas_clear_interrupt_gen2 - Check & clear interrupt
702 * @regs: MFI register set
705 megasas_clear_intr_gen2(struct megasas_register_set __iomem *regs)
710 * Check if it is our interrupt
712 status = readl(®s->outbound_intr_status);
714 if (status & MFI_GEN2_ENABLE_INTERRUPT_MASK) {
715 mfiStatus = MFI_INTR_FLAG_REPLY_MESSAGE;
717 if (status & MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT) {
718 mfiStatus |= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE;
722 * Clear the interrupt by writing back the same value
725 writel(status, ®s->outbound_doorbell_clear);
727 /* Dummy readl to force pci flush */
728 readl(®s->outbound_intr_status);
733 * megasas_fire_cmd_gen2 - Sends command to the FW
734 * @frame_phys_addr : Physical address of cmd
735 * @frame_count : Number of frames for the command
736 * @regs : MFI register set
739 megasas_fire_cmd_gen2(struct megasas_instance *instance,
740 dma_addr_t frame_phys_addr,
742 struct megasas_register_set __iomem *regs)
745 spin_lock_irqsave(&instance->hba_lock, flags);
746 writel((frame_phys_addr | (frame_count<<1))|1,
747 &(regs)->inbound_queue_port);
748 spin_unlock_irqrestore(&instance->hba_lock, flags);
752 * megasas_adp_reset_gen2 - For controller reset
753 * @regs: MFI register set
756 megasas_adp_reset_gen2(struct megasas_instance *instance,
757 struct megasas_register_set __iomem *reg_set)
761 u32 *seq_offset = ®_set->seq_offset;
762 u32 *hostdiag_offset = ®_set->host_diag;
764 if (instance->instancet == &megasas_instance_template_skinny) {
765 seq_offset = ®_set->fusion_seq_offset;
766 hostdiag_offset = ®_set->fusion_host_diag;
769 writel(0, seq_offset);
770 writel(4, seq_offset);
771 writel(0xb, seq_offset);
772 writel(2, seq_offset);
773 writel(7, seq_offset);
774 writel(0xd, seq_offset);
778 HostDiag = (u32)readl(hostdiag_offset);
780 while ( !( HostDiag & DIAG_WRITE_ENABLE) ) {
782 HostDiag = (u32)readl(hostdiag_offset);
783 printk(KERN_NOTICE "RESETGEN2: retry=%x, hostdiag=%x\n",
791 printk(KERN_NOTICE "ADP_RESET_GEN2: HostDiag=%x\n", HostDiag);
793 writel((HostDiag | DIAG_RESET_ADAPTER), hostdiag_offset);
797 HostDiag = (u32)readl(hostdiag_offset);
798 while ( ( HostDiag & DIAG_RESET_ADAPTER) ) {
800 HostDiag = (u32)readl(hostdiag_offset);
801 printk(KERN_NOTICE "RESET_GEN2: retry=%x, hostdiag=%x\n",
812 * megasas_check_reset_gen2 - For controller reset check
813 * @regs: MFI register set
816 megasas_check_reset_gen2(struct megasas_instance *instance,
817 struct megasas_register_set __iomem *regs)
819 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
826 static struct megasas_instance_template megasas_instance_template_gen2 = {
828 .fire_cmd = megasas_fire_cmd_gen2,
829 .enable_intr = megasas_enable_intr_gen2,
830 .disable_intr = megasas_disable_intr_gen2,
831 .clear_intr = megasas_clear_intr_gen2,
832 .read_fw_status_reg = megasas_read_fw_status_reg_gen2,
833 .adp_reset = megasas_adp_reset_gen2,
834 .check_reset = megasas_check_reset_gen2,
835 .service_isr = megasas_isr,
836 .tasklet = megasas_complete_cmd_dpc,
837 .init_adapter = megasas_init_adapter_mfi,
838 .build_and_issue_cmd = megasas_build_and_issue_cmd,
839 .issue_dcmd = megasas_issue_dcmd,
843 * This is the end of set of functions & definitions
844 * specific to gen2 (deviceid : 0x78, 0x79) controllers
848 * Template added for TB (Fusion)
850 extern struct megasas_instance_template megasas_instance_template_fusion;
853 * megasas_issue_polled - Issues a polling command
854 * @instance: Adapter soft state
855 * @cmd: Command packet to be issued
857 * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
860 megasas_issue_polled(struct megasas_instance *instance, struct megasas_cmd *cmd)
863 struct megasas_header *frame_hdr = &cmd->frame->hdr;
865 frame_hdr->cmd_status = 0xFF;
866 frame_hdr->flags |= MFI_FRAME_DONT_POST_IN_REPLY_QUEUE;
869 * Issue the frame using inbound queue port
871 instance->instancet->issue_dcmd(instance, cmd);
874 * Wait for cmd_status to change
876 return wait_and_poll(instance, cmd);
880 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds
881 * @instance: Adapter soft state
882 * @cmd: Command to be issued
884 * This function waits on an event for the command to be returned from ISR.
885 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
886 * Used to issue ioctl commands.
889 megasas_issue_blocked_cmd(struct megasas_instance *instance,
890 struct megasas_cmd *cmd)
892 cmd->cmd_status = ENODATA;
894 instance->instancet->issue_dcmd(instance, cmd);
896 wait_event(instance->int_cmd_wait_q, cmd->cmd_status != ENODATA);
902 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd
903 * @instance: Adapter soft state
904 * @cmd_to_abort: Previously issued cmd to be aborted
906 * MFI firmware can abort previously issued AEN command (automatic event
907 * notification). The megasas_issue_blocked_abort_cmd() issues such abort
908 * cmd and waits for return status.
909 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
912 megasas_issue_blocked_abort_cmd(struct megasas_instance *instance,
913 struct megasas_cmd *cmd_to_abort)
915 struct megasas_cmd *cmd;
916 struct megasas_abort_frame *abort_fr;
918 cmd = megasas_get_cmd(instance);
923 abort_fr = &cmd->frame->abort;
926 * Prepare and issue the abort frame
928 abort_fr->cmd = MFI_CMD_ABORT;
929 abort_fr->cmd_status = 0xFF;
931 abort_fr->abort_context = cmd_to_abort->index;
932 abort_fr->abort_mfi_phys_addr_lo = cmd_to_abort->frame_phys_addr;
933 abort_fr->abort_mfi_phys_addr_hi = 0;
936 cmd->cmd_status = 0xFF;
938 instance->instancet->issue_dcmd(instance, cmd);
941 * Wait for this cmd to complete
943 wait_event(instance->abort_cmd_wait_q, cmd->cmd_status != 0xFF);
946 megasas_return_cmd(instance, cmd);
951 * megasas_make_sgl32 - Prepares 32-bit SGL
952 * @instance: Adapter soft state
953 * @scp: SCSI command from the mid-layer
954 * @mfi_sgl: SGL to be filled in
956 * If successful, this function returns the number of SG elements. Otherwise,
960 megasas_make_sgl32(struct megasas_instance *instance, struct scsi_cmnd *scp,
961 union megasas_sgl *mfi_sgl)
965 struct scatterlist *os_sgl;
967 sge_count = scsi_dma_map(scp);
968 BUG_ON(sge_count < 0);
971 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
972 mfi_sgl->sge32[i].length = sg_dma_len(os_sgl);
973 mfi_sgl->sge32[i].phys_addr = sg_dma_address(os_sgl);
980 * megasas_make_sgl64 - Prepares 64-bit SGL
981 * @instance: Adapter soft state
982 * @scp: SCSI command from the mid-layer
983 * @mfi_sgl: SGL to be filled in
985 * If successful, this function returns the number of SG elements. Otherwise,
989 megasas_make_sgl64(struct megasas_instance *instance, struct scsi_cmnd *scp,
990 union megasas_sgl *mfi_sgl)
994 struct scatterlist *os_sgl;
996 sge_count = scsi_dma_map(scp);
997 BUG_ON(sge_count < 0);
1000 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1001 mfi_sgl->sge64[i].length = sg_dma_len(os_sgl);
1002 mfi_sgl->sge64[i].phys_addr = sg_dma_address(os_sgl);
1009 * megasas_make_sgl_skinny - Prepares IEEE SGL
1010 * @instance: Adapter soft state
1011 * @scp: SCSI command from the mid-layer
1012 * @mfi_sgl: SGL to be filled in
1014 * If successful, this function returns the number of SG elements. Otherwise,
1018 megasas_make_sgl_skinny(struct megasas_instance *instance,
1019 struct scsi_cmnd *scp, union megasas_sgl *mfi_sgl)
1023 struct scatterlist *os_sgl;
1025 sge_count = scsi_dma_map(scp);
1028 scsi_for_each_sg(scp, os_sgl, sge_count, i) {
1029 mfi_sgl->sge_skinny[i].length = sg_dma_len(os_sgl);
1030 mfi_sgl->sge_skinny[i].phys_addr =
1031 sg_dma_address(os_sgl);
1032 mfi_sgl->sge_skinny[i].flag = 0;
1039 * megasas_get_frame_count - Computes the number of frames
1040 * @frame_type : type of frame- io or pthru frame
1041 * @sge_count : number of sg elements
1043 * Returns the number of frames required for numnber of sge's (sge_count)
1046 static u32 megasas_get_frame_count(struct megasas_instance *instance,
1047 u8 sge_count, u8 frame_type)
1054 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
1055 sizeof(struct megasas_sge32);
1057 if (instance->flag_ieee) {
1058 sge_sz = sizeof(struct megasas_sge_skinny);
1062 * Main frame can contain 2 SGEs for 64-bit SGLs and
1063 * 3 SGEs for 32-bit SGLs for ldio &
1064 * 1 SGEs for 64-bit SGLs and
1065 * 2 SGEs for 32-bit SGLs for pthru frame
1067 if (unlikely(frame_type == PTHRU_FRAME)) {
1068 if (instance->flag_ieee == 1) {
1069 num_cnt = sge_count - 1;
1070 } else if (IS_DMA64)
1071 num_cnt = sge_count - 1;
1073 num_cnt = sge_count - 2;
1075 if (instance->flag_ieee == 1) {
1076 num_cnt = sge_count - 1;
1077 } else if (IS_DMA64)
1078 num_cnt = sge_count - 2;
1080 num_cnt = sge_count - 3;
1084 sge_bytes = sge_sz * num_cnt;
1086 frame_count = (sge_bytes / MEGAMFI_FRAME_SIZE) +
1087 ((sge_bytes % MEGAMFI_FRAME_SIZE) ? 1 : 0) ;
1092 if (frame_count > 7)
1098 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
1099 * @instance: Adapter soft state
1100 * @scp: SCSI command
1101 * @cmd: Command to be prepared in
1103 * This function prepares CDB commands. These are typcially pass-through
1104 * commands to the devices.
1107 megasas_build_dcdb(struct megasas_instance *instance, struct scsi_cmnd *scp,
1108 struct megasas_cmd *cmd)
1113 struct megasas_pthru_frame *pthru;
1115 is_logical = MEGASAS_IS_LOGICAL(scp);
1116 device_id = MEGASAS_DEV_INDEX(instance, scp);
1117 pthru = (struct megasas_pthru_frame *)cmd->frame;
1119 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1120 flags = MFI_FRAME_DIR_WRITE;
1121 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1122 flags = MFI_FRAME_DIR_READ;
1123 else if (scp->sc_data_direction == PCI_DMA_NONE)
1124 flags = MFI_FRAME_DIR_NONE;
1126 if (instance->flag_ieee == 1) {
1127 flags |= MFI_FRAME_IEEE;
1131 * Prepare the DCDB frame
1133 pthru->cmd = (is_logical) ? MFI_CMD_LD_SCSI_IO : MFI_CMD_PD_SCSI_IO;
1134 pthru->cmd_status = 0x0;
1135 pthru->scsi_status = 0x0;
1136 pthru->target_id = device_id;
1137 pthru->lun = scp->device->lun;
1138 pthru->cdb_len = scp->cmd_len;
1141 pthru->flags = flags;
1142 pthru->data_xfer_len = scsi_bufflen(scp);
1144 memcpy(pthru->cdb, scp->cmnd, scp->cmd_len);
1147 * If the command is for the tape device, set the
1148 * pthru timeout to the os layer timeout value.
1150 if (scp->device->type == TYPE_TAPE) {
1151 if ((scp->request->timeout / HZ) > 0xFFFF)
1152 pthru->timeout = 0xFFFF;
1154 pthru->timeout = scp->request->timeout / HZ;
1160 if (instance->flag_ieee == 1) {
1161 pthru->flags |= MFI_FRAME_SGL64;
1162 pthru->sge_count = megasas_make_sgl_skinny(instance, scp,
1164 } else if (IS_DMA64) {
1165 pthru->flags |= MFI_FRAME_SGL64;
1166 pthru->sge_count = megasas_make_sgl64(instance, scp,
1169 pthru->sge_count = megasas_make_sgl32(instance, scp,
1172 if (pthru->sge_count > instance->max_num_sge) {
1173 printk(KERN_ERR "megasas: DCDB two many SGE NUM=%x\n",
1179 * Sense info specific
1181 pthru->sense_len = SCSI_SENSE_BUFFERSIZE;
1182 pthru->sense_buf_phys_addr_hi = 0;
1183 pthru->sense_buf_phys_addr_lo = cmd->sense_phys_addr;
1186 * Compute the total number of frames this command consumes. FW uses
1187 * this number to pull sufficient number of frames from host memory.
1189 cmd->frame_count = megasas_get_frame_count(instance, pthru->sge_count,
1192 return cmd->frame_count;
1196 * megasas_build_ldio - Prepares IOs to logical devices
1197 * @instance: Adapter soft state
1198 * @scp: SCSI command
1199 * @cmd: Command to be prepared
1201 * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1204 megasas_build_ldio(struct megasas_instance *instance, struct scsi_cmnd *scp,
1205 struct megasas_cmd *cmd)
1208 u8 sc = scp->cmnd[0];
1210 struct megasas_io_frame *ldio;
1212 device_id = MEGASAS_DEV_INDEX(instance, scp);
1213 ldio = (struct megasas_io_frame *)cmd->frame;
1215 if (scp->sc_data_direction == PCI_DMA_TODEVICE)
1216 flags = MFI_FRAME_DIR_WRITE;
1217 else if (scp->sc_data_direction == PCI_DMA_FROMDEVICE)
1218 flags = MFI_FRAME_DIR_READ;
1220 if (instance->flag_ieee == 1) {
1221 flags |= MFI_FRAME_IEEE;
1225 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
1227 ldio->cmd = (sc & 0x02) ? MFI_CMD_LD_WRITE : MFI_CMD_LD_READ;
1228 ldio->cmd_status = 0x0;
1229 ldio->scsi_status = 0x0;
1230 ldio->target_id = device_id;
1232 ldio->reserved_0 = 0;
1234 ldio->flags = flags;
1235 ldio->start_lba_hi = 0;
1236 ldio->access_byte = (scp->cmd_len != 6) ? scp->cmnd[1] : 0;
1239 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1241 if (scp->cmd_len == 6) {
1242 ldio->lba_count = (u32) scp->cmnd[4];
1243 ldio->start_lba_lo = ((u32) scp->cmnd[1] << 16) |
1244 ((u32) scp->cmnd[2] << 8) | (u32) scp->cmnd[3];
1246 ldio->start_lba_lo &= 0x1FFFFF;
1250 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1252 else if (scp->cmd_len == 10) {
1253 ldio->lba_count = (u32) scp->cmnd[8] |
1254 ((u32) scp->cmnd[7] << 8);
1255 ldio->start_lba_lo = ((u32) scp->cmnd[2] << 24) |
1256 ((u32) scp->cmnd[3] << 16) |
1257 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1261 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1263 else if (scp->cmd_len == 12) {
1264 ldio->lba_count = ((u32) scp->cmnd[6] << 24) |
1265 ((u32) scp->cmnd[7] << 16) |
1266 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
1268 ldio->start_lba_lo = ((u32) scp->cmnd[2] << 24) |
1269 ((u32) scp->cmnd[3] << 16) |
1270 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1274 * 16-byte READ(0x88) or WRITE(0x8A) cdb
1276 else if (scp->cmd_len == 16) {
1277 ldio->lba_count = ((u32) scp->cmnd[10] << 24) |
1278 ((u32) scp->cmnd[11] << 16) |
1279 ((u32) scp->cmnd[12] << 8) | (u32) scp->cmnd[13];
1281 ldio->start_lba_lo = ((u32) scp->cmnd[6] << 24) |
1282 ((u32) scp->cmnd[7] << 16) |
1283 ((u32) scp->cmnd[8] << 8) | (u32) scp->cmnd[9];
1285 ldio->start_lba_hi = ((u32) scp->cmnd[2] << 24) |
1286 ((u32) scp->cmnd[3] << 16) |
1287 ((u32) scp->cmnd[4] << 8) | (u32) scp->cmnd[5];
1294 if (instance->flag_ieee) {
1295 ldio->flags |= MFI_FRAME_SGL64;
1296 ldio->sge_count = megasas_make_sgl_skinny(instance, scp,
1298 } else if (IS_DMA64) {
1299 ldio->flags |= MFI_FRAME_SGL64;
1300 ldio->sge_count = megasas_make_sgl64(instance, scp, &ldio->sgl);
1302 ldio->sge_count = megasas_make_sgl32(instance, scp, &ldio->sgl);
1304 if (ldio->sge_count > instance->max_num_sge) {
1305 printk(KERN_ERR "megasas: build_ld_io: sge_count = %x\n",
1311 * Sense info specific
1313 ldio->sense_len = SCSI_SENSE_BUFFERSIZE;
1314 ldio->sense_buf_phys_addr_hi = 0;
1315 ldio->sense_buf_phys_addr_lo = cmd->sense_phys_addr;
1318 * Compute the total number of frames this command consumes. FW uses
1319 * this number to pull sufficient number of frames from host memory.
1321 cmd->frame_count = megasas_get_frame_count(instance,
1322 ldio->sge_count, IO_FRAME);
1324 return cmd->frame_count;
1328 * megasas_is_ldio - Checks if the cmd is for logical drive
1329 * @scmd: SCSI command
1331 * Called by megasas_queue_command to find out if the command to be queued
1332 * is a logical drive command
1334 inline int megasas_is_ldio(struct scsi_cmnd *cmd)
1336 if (!MEGASAS_IS_LOGICAL(cmd))
1338 switch (cmd->cmnd[0]) {
1354 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds
1356 * @instance: Adapter soft state
1359 megasas_dump_pending_frames(struct megasas_instance *instance)
1361 struct megasas_cmd *cmd;
1363 union megasas_sgl *mfi_sgl;
1364 struct megasas_io_frame *ldio;
1365 struct megasas_pthru_frame *pthru;
1367 u32 max_cmd = instance->max_fw_cmds;
1369 printk(KERN_ERR "\nmegasas[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance->host->host_no);
1370 printk(KERN_ERR "megasas[%d]: Total OS Pending cmds : %d\n",instance->host->host_no,atomic_read(&instance->fw_outstanding));
1372 printk(KERN_ERR "\nmegasas[%d]: 64 bit SGLs were sent to FW\n",instance->host->host_no);
1374 printk(KERN_ERR "\nmegasas[%d]: 32 bit SGLs were sent to FW\n",instance->host->host_no);
1376 printk(KERN_ERR "megasas[%d]: Pending OS cmds in FW : \n",instance->host->host_no);
1377 for (i = 0; i < max_cmd; i++) {
1378 cmd = instance->cmd_list[i];
1381 printk(KERN_ERR "megasas[%d]: Frame addr :0x%08lx : ",instance->host->host_no,(unsigned long)cmd->frame_phys_addr);
1382 if (megasas_is_ldio(cmd->scmd)){
1383 ldio = (struct megasas_io_frame *)cmd->frame;
1384 mfi_sgl = &ldio->sgl;
1385 sgcount = ldio->sge_count;
1386 printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, lba lo : 0x%x, lba_hi : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",instance->host->host_no, cmd->frame_count,ldio->cmd,ldio->target_id, ldio->start_lba_lo,ldio->start_lba_hi,ldio->sense_buf_phys_addr_lo,sgcount);
1389 pthru = (struct megasas_pthru_frame *) cmd->frame;
1390 mfi_sgl = &pthru->sgl;
1391 sgcount = pthru->sge_count;
1392 printk(KERN_ERR "megasas[%d]: frame count : 0x%x, Cmd : 0x%x, Tgt id : 0x%x, lun : 0x%x, cdb_len : 0x%x, data xfer len : 0x%x, sense_buf addr : 0x%x,sge count : 0x%x\n",instance->host->host_no,cmd->frame_count,pthru->cmd,pthru->target_id,pthru->lun,pthru->cdb_len , pthru->data_xfer_len,pthru->sense_buf_phys_addr_lo,sgcount);
1394 if(megasas_dbg_lvl & MEGASAS_DBG_LVL){
1395 for (n = 0; n < sgcount; n++){
1397 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%08lx ",mfi_sgl->sge64[n].length , (unsigned long)mfi_sgl->sge64[n].phys_addr) ;
1399 printk(KERN_ERR "megasas: sgl len : 0x%x, sgl addr : 0x%x ",mfi_sgl->sge32[n].length , mfi_sgl->sge32[n].phys_addr) ;
1402 printk(KERN_ERR "\n");
1404 printk(KERN_ERR "\nmegasas[%d]: Pending Internal cmds in FW : \n",instance->host->host_no);
1405 for (i = 0; i < max_cmd; i++) {
1407 cmd = instance->cmd_list[i];
1409 if(cmd->sync_cmd == 1){
1410 printk(KERN_ERR "0x%08lx : ", (unsigned long)cmd->frame_phys_addr);
1413 printk(KERN_ERR "megasas[%d]: Dumping Done.\n\n",instance->host->host_no);
1417 megasas_build_and_issue_cmd(struct megasas_instance *instance,
1418 struct scsi_cmnd *scmd)
1420 struct megasas_cmd *cmd;
1423 cmd = megasas_get_cmd(instance);
1425 return SCSI_MLQUEUE_HOST_BUSY;
1428 * Logical drive command
1430 if (megasas_is_ldio(scmd))
1431 frame_count = megasas_build_ldio(instance, scmd, cmd);
1433 frame_count = megasas_build_dcdb(instance, scmd, cmd);
1436 goto out_return_cmd;
1439 scmd->SCp.ptr = (char *)cmd;
1442 * Issue the command to the FW
1444 atomic_inc(&instance->fw_outstanding);
1446 instance->instancet->fire_cmd(instance, cmd->frame_phys_addr,
1447 cmd->frame_count-1, instance->reg_set);
1451 megasas_return_cmd(instance, cmd);
1457 * megasas_queue_command - Queue entry point
1458 * @scmd: SCSI command to be queued
1459 * @done: Callback entry point
1462 megasas_queue_command_lck(struct scsi_cmnd *scmd, void (*done) (struct scsi_cmnd *))
1464 struct megasas_instance *instance;
1465 unsigned long flags;
1467 instance = (struct megasas_instance *)
1468 scmd->device->host->hostdata;
1470 if (instance->issuepend_done == 0)
1471 return SCSI_MLQUEUE_HOST_BUSY;
1473 spin_lock_irqsave(&instance->hba_lock, flags);
1474 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
1475 spin_unlock_irqrestore(&instance->hba_lock, flags);
1476 return SCSI_MLQUEUE_HOST_BUSY;
1479 spin_unlock_irqrestore(&instance->hba_lock, flags);
1481 scmd->scsi_done = done;
1484 if (MEGASAS_IS_LOGICAL(scmd) &&
1485 (scmd->device->id >= MEGASAS_MAX_LD || scmd->device->lun)) {
1486 scmd->result = DID_BAD_TARGET << 16;
1490 switch (scmd->cmnd[0]) {
1491 case SYNCHRONIZE_CACHE:
1493 * FW takes care of flush cache on its own
1494 * No need to send it down
1496 scmd->result = DID_OK << 16;
1502 if (instance->instancet->build_and_issue_cmd(instance, scmd)) {
1503 printk(KERN_ERR "megasas: Err returned from build_and_issue_cmd\n");
1504 return SCSI_MLQUEUE_HOST_BUSY;
1514 static DEF_SCSI_QCMD(megasas_queue_command)
1516 static struct megasas_instance *megasas_lookup_instance(u16 host_no)
1520 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
1522 if ((megasas_mgmt_info.instance[i]) &&
1523 (megasas_mgmt_info.instance[i]->host->host_no == host_no))
1524 return megasas_mgmt_info.instance[i];
1530 static int megasas_slave_configure(struct scsi_device *sdev)
1533 struct megasas_instance *instance ;
1535 instance = megasas_lookup_instance(sdev->host->host_no);
1538 * Don't export physical disk devices to the disk driver.
1540 * FIXME: Currently we don't export them to the midlayer at all.
1541 * That will be fixed once LSI engineers have audited the
1542 * firmware for possible issues.
1544 if (sdev->channel < MEGASAS_MAX_PD_CHANNELS &&
1545 sdev->type == TYPE_DISK) {
1546 pd_index = (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1548 if (instance->pd_list[pd_index].driveState ==
1549 MR_PD_STATE_SYSTEM) {
1550 blk_queue_rq_timeout(sdev->request_queue,
1551 MEGASAS_DEFAULT_CMD_TIMEOUT * HZ);
1558 * The RAID firmware may require extended timeouts.
1560 blk_queue_rq_timeout(sdev->request_queue,
1561 MEGASAS_DEFAULT_CMD_TIMEOUT * HZ);
1565 static int megasas_slave_alloc(struct scsi_device *sdev)
1568 struct megasas_instance *instance ;
1569 instance = megasas_lookup_instance(sdev->host->host_no);
1570 if ((sdev->channel < MEGASAS_MAX_PD_CHANNELS) &&
1571 (sdev->type == TYPE_DISK)) {
1573 * Open the OS scan to the SYSTEM PD
1576 (sdev->channel * MEGASAS_MAX_DEV_PER_CHANNEL) +
1578 if ((instance->pd_list[pd_index].driveState ==
1579 MR_PD_STATE_SYSTEM) &&
1580 (instance->pd_list[pd_index].driveType ==
1589 void megaraid_sas_kill_hba(struct megasas_instance *instance)
1591 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
1592 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
1593 (instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
1594 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)) {
1595 writel(MFI_STOP_ADP, &instance->reg_set->doorbell);
1597 writel(MFI_STOP_ADP, &instance->reg_set->inbound_doorbell);
1602 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
1603 * restored to max value
1604 * @instance: Adapter soft state
1608 megasas_check_and_restore_queue_depth(struct megasas_instance *instance)
1610 unsigned long flags;
1611 if (instance->flag & MEGASAS_FW_BUSY
1612 && time_after(jiffies, instance->last_time + 5 * HZ)
1613 && atomic_read(&instance->fw_outstanding) <
1614 instance->throttlequeuedepth + 1) {
1616 spin_lock_irqsave(instance->host->host_lock, flags);
1617 instance->flag &= ~MEGASAS_FW_BUSY;
1618 if ((instance->pdev->device ==
1619 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
1620 (instance->pdev->device ==
1621 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
1622 instance->host->can_queue =
1623 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS;
1625 instance->host->can_queue =
1626 instance->max_fw_cmds - MEGASAS_INT_CMDS;
1628 spin_unlock_irqrestore(instance->host->host_lock, flags);
1633 * megasas_complete_cmd_dpc - Returns FW's controller structure
1634 * @instance_addr: Address of adapter soft state
1636 * Tasklet to complete cmds
1638 static void megasas_complete_cmd_dpc(unsigned long instance_addr)
1643 struct megasas_cmd *cmd;
1644 struct megasas_instance *instance =
1645 (struct megasas_instance *)instance_addr;
1646 unsigned long flags;
1648 /* If we have already declared adapter dead, donot complete cmds */
1649 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR )
1652 spin_lock_irqsave(&instance->completion_lock, flags);
1654 producer = *instance->producer;
1655 consumer = *instance->consumer;
1657 while (consumer != producer) {
1658 context = instance->reply_queue[consumer];
1659 if (context >= instance->max_fw_cmds) {
1660 printk(KERN_ERR "Unexpected context value %x\n",
1665 cmd = instance->cmd_list[context];
1667 megasas_complete_cmd(instance, cmd, DID_OK);
1670 if (consumer == (instance->max_fw_cmds + 1)) {
1675 *instance->consumer = producer;
1677 spin_unlock_irqrestore(&instance->completion_lock, flags);
1680 * Check if we can restore can_queue
1682 megasas_check_and_restore_queue_depth(instance);
1686 megasas_internal_reset_defer_cmds(struct megasas_instance *instance);
1689 process_fw_state_change_wq(struct work_struct *work);
1691 void megasas_do_ocr(struct megasas_instance *instance)
1693 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
1694 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
1695 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
1696 *instance->consumer = MEGASAS_ADPRESET_INPROG_SIGN;
1698 instance->instancet->disable_intr(instance->reg_set);
1699 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
1700 instance->issuepend_done = 0;
1702 atomic_set(&instance->fw_outstanding, 0);
1703 megasas_internal_reset_defer_cmds(instance);
1704 process_fw_state_change_wq(&instance->work_init);
1708 * megasas_wait_for_outstanding - Wait for all outstanding cmds
1709 * @instance: Adapter soft state
1711 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
1712 * complete all its outstanding commands. Returns error if one or more IOs
1713 * are pending after this time period. It also marks the controller dead.
1715 static int megasas_wait_for_outstanding(struct megasas_instance *instance)
1719 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
1721 unsigned long flags;
1722 struct list_head clist_local;
1723 struct megasas_cmd *reset_cmd;
1725 u8 kill_adapter_flag;
1727 spin_lock_irqsave(&instance->hba_lock, flags);
1728 adprecovery = instance->adprecovery;
1729 spin_unlock_irqrestore(&instance->hba_lock, flags);
1731 if (adprecovery != MEGASAS_HBA_OPERATIONAL) {
1733 INIT_LIST_HEAD(&clist_local);
1734 spin_lock_irqsave(&instance->hba_lock, flags);
1735 list_splice_init(&instance->internal_reset_pending_q,
1737 spin_unlock_irqrestore(&instance->hba_lock, flags);
1739 printk(KERN_NOTICE "megasas: HBA reset wait ...\n");
1740 for (i = 0; i < wait_time; i++) {
1742 spin_lock_irqsave(&instance->hba_lock, flags);
1743 adprecovery = instance->adprecovery;
1744 spin_unlock_irqrestore(&instance->hba_lock, flags);
1745 if (adprecovery == MEGASAS_HBA_OPERATIONAL)
1749 if (adprecovery != MEGASAS_HBA_OPERATIONAL) {
1750 printk(KERN_NOTICE "megasas: reset: Stopping HBA.\n");
1751 spin_lock_irqsave(&instance->hba_lock, flags);
1752 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
1753 spin_unlock_irqrestore(&instance->hba_lock, flags);
1758 while (!list_empty(&clist_local)) {
1759 reset_cmd = list_entry((&clist_local)->next,
1760 struct megasas_cmd, list);
1761 list_del_init(&reset_cmd->list);
1762 if (reset_cmd->scmd) {
1763 reset_cmd->scmd->result = DID_RESET << 16;
1764 printk(KERN_NOTICE "%d:%p reset [%02x]\n",
1765 reset_index, reset_cmd,
1766 reset_cmd->scmd->cmnd[0]);
1768 reset_cmd->scmd->scsi_done(reset_cmd->scmd);
1769 megasas_return_cmd(instance, reset_cmd);
1770 } else if (reset_cmd->sync_cmd) {
1771 printk(KERN_NOTICE "megasas:%p synch cmds"
1775 reset_cmd->cmd_status = ENODATA;
1776 instance->instancet->fire_cmd(instance,
1777 reset_cmd->frame_phys_addr,
1778 0, instance->reg_set);
1780 printk(KERN_NOTICE "megasas: %p unexpected"
1790 for (i = 0; i < resetwaittime; i++) {
1792 int outstanding = atomic_read(&instance->fw_outstanding);
1797 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
1798 printk(KERN_NOTICE "megasas: [%2d]waiting for %d "
1799 "commands to complete\n",i,outstanding);
1801 * Call cmd completion routine. Cmd to be
1802 * be completed directly without depending on isr.
1804 megasas_complete_cmd_dpc((unsigned long)instance);
1811 kill_adapter_flag = 0;
1813 fw_state = instance->instancet->read_fw_status_reg(
1814 instance->reg_set) & MFI_STATE_MASK;
1815 if ((fw_state == MFI_STATE_FAULT) &&
1816 (instance->disableOnlineCtrlReset == 0)) {
1818 kill_adapter_flag = 2;
1821 megasas_do_ocr(instance);
1822 kill_adapter_flag = 1;
1824 /* wait for 1 secs to let FW finish the pending cmds */
1830 if (atomic_read(&instance->fw_outstanding) &&
1831 !kill_adapter_flag) {
1832 if (instance->disableOnlineCtrlReset == 0) {
1834 megasas_do_ocr(instance);
1836 /* wait for 5 secs to let FW finish the pending cmds */
1837 for (i = 0; i < wait_time; i++) {
1839 atomic_read(&instance->fw_outstanding);
1847 if (atomic_read(&instance->fw_outstanding) ||
1848 (kill_adapter_flag == 2)) {
1849 printk(KERN_NOTICE "megaraid_sas: pending cmds after reset\n");
1851 * Send signal to FW to stop processing any pending cmds.
1852 * The controller will be taken offline by the OS now.
1854 if ((instance->pdev->device ==
1855 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
1856 (instance->pdev->device ==
1857 PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
1858 writel(MFI_STOP_ADP,
1859 &instance->reg_set->doorbell);
1861 writel(MFI_STOP_ADP,
1862 &instance->reg_set->inbound_doorbell);
1864 megasas_dump_pending_frames(instance);
1865 spin_lock_irqsave(&instance->hba_lock, flags);
1866 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
1867 spin_unlock_irqrestore(&instance->hba_lock, flags);
1871 printk(KERN_NOTICE "megaraid_sas: no pending cmds after reset\n");
1877 * megasas_generic_reset - Generic reset routine
1878 * @scmd: Mid-layer SCSI command
1880 * This routine implements a generic reset handler for device, bus and host
1881 * reset requests. Device, bus and host specific reset handlers can use this
1882 * function after they do their specific tasks.
1884 static int megasas_generic_reset(struct scsi_cmnd *scmd)
1887 struct megasas_instance *instance;
1889 instance = (struct megasas_instance *)scmd->device->host->hostdata;
1891 scmd_printk(KERN_NOTICE, scmd, "megasas: RESET cmd=%x retries=%x\n",
1892 scmd->cmnd[0], scmd->retries);
1894 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
1895 printk(KERN_ERR "megasas: cannot recover from previous reset "
1900 ret_val = megasas_wait_for_outstanding(instance);
1901 if (ret_val == SUCCESS)
1902 printk(KERN_NOTICE "megasas: reset successful \n");
1904 printk(KERN_ERR "megasas: failed to do reset\n");
1910 * megasas_reset_timer - quiesce the adapter if required
1913 * Sets the FW busy flag and reduces the host->can_queue if the
1914 * cmd has not been completed within the timeout period.
1917 blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
1919 struct megasas_instance *instance;
1920 unsigned long flags;
1922 if (time_after(jiffies, scmd->jiffies_at_alloc +
1923 (MEGASAS_DEFAULT_CMD_TIMEOUT * 2) * HZ)) {
1924 return BLK_EH_NOT_HANDLED;
1927 instance = (struct megasas_instance *)scmd->device->host->hostdata;
1928 if (!(instance->flag & MEGASAS_FW_BUSY)) {
1929 /* FW is busy, throttle IO */
1930 spin_lock_irqsave(instance->host->host_lock, flags);
1932 instance->host->can_queue = instance->throttlequeuedepth;
1933 instance->last_time = jiffies;
1934 instance->flag |= MEGASAS_FW_BUSY;
1936 spin_unlock_irqrestore(instance->host->host_lock, flags);
1938 return BLK_EH_RESET_TIMER;
1942 * megasas_reset_device - Device reset handler entry point
1944 static int megasas_reset_device(struct scsi_cmnd *scmd)
1949 * First wait for all commands to complete
1951 ret = megasas_generic_reset(scmd);
1957 * megasas_reset_bus_host - Bus & host reset handler entry point
1959 static int megasas_reset_bus_host(struct scsi_cmnd *scmd)
1962 struct megasas_instance *instance;
1963 instance = (struct megasas_instance *)scmd->device->host->hostdata;
1966 * First wait for all commands to complete
1968 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
1969 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER))
1970 ret = megasas_reset_fusion(scmd->device->host);
1972 ret = megasas_generic_reset(scmd);
1978 * megasas_bios_param - Returns disk geometry for a disk
1979 * @sdev: device handle
1980 * @bdev: block device
1981 * @capacity: drive capacity
1982 * @geom: geometry parameters
1985 megasas_bios_param(struct scsi_device *sdev, struct block_device *bdev,
1986 sector_t capacity, int geom[])
1992 /* Default heads (64) & sectors (32) */
1996 tmp = heads * sectors;
1997 cylinders = capacity;
1999 sector_div(cylinders, tmp);
2002 * Handle extended translation size for logical drives > 1Gb
2005 if (capacity >= 0x200000) {
2008 tmp = heads*sectors;
2009 cylinders = capacity;
2010 sector_div(cylinders, tmp);
2015 geom[2] = cylinders;
2020 static void megasas_aen_polling(struct work_struct *work);
2023 * megasas_service_aen - Processes an event notification
2024 * @instance: Adapter soft state
2025 * @cmd: AEN command completed by the ISR
2027 * For AEN, driver sends a command down to FW that is held by the FW till an
2028 * event occurs. When an event of interest occurs, FW completes the command
2029 * that it was previously holding.
2031 * This routines sends SIGIO signal to processes that have registered with the
2035 megasas_service_aen(struct megasas_instance *instance, struct megasas_cmd *cmd)
2037 unsigned long flags;
2039 * Don't signal app if it is just an aborted previously registered aen
2041 if ((!cmd->abort_aen) && (instance->unload == 0)) {
2042 spin_lock_irqsave(&poll_aen_lock, flags);
2043 megasas_poll_wait_aen = 1;
2044 spin_unlock_irqrestore(&poll_aen_lock, flags);
2045 wake_up(&megasas_poll_wait);
2046 kill_fasync(&megasas_async_queue, SIGIO, POLL_IN);
2051 instance->aen_cmd = NULL;
2052 megasas_return_cmd(instance, cmd);
2054 if ((instance->unload == 0) &&
2055 ((instance->issuepend_done == 1))) {
2056 struct megasas_aen_event *ev;
2057 ev = kzalloc(sizeof(*ev), GFP_ATOMIC);
2059 printk(KERN_ERR "megasas_service_aen: out of memory\n");
2061 ev->instance = instance;
2063 INIT_DELAYED_WORK(&ev->hotplug_work,
2064 megasas_aen_polling);
2065 schedule_delayed_work(&ev->hotplug_work, 0);
2070 static int megasas_change_queue_depth(struct scsi_device *sdev,
2071 int queue_depth, int reason)
2073 if (reason != SCSI_QDEPTH_DEFAULT)
2076 if (queue_depth > sdev->host->can_queue)
2077 queue_depth = sdev->host->can_queue;
2078 scsi_adjust_queue_depth(sdev, scsi_get_tag_type(sdev),
2085 * Scsi host template for megaraid_sas driver
2087 static struct scsi_host_template megasas_template = {
2089 .module = THIS_MODULE,
2090 .name = "LSI SAS based MegaRAID driver",
2091 .proc_name = "megaraid_sas",
2092 .slave_configure = megasas_slave_configure,
2093 .slave_alloc = megasas_slave_alloc,
2094 .queuecommand = megasas_queue_command,
2095 .eh_device_reset_handler = megasas_reset_device,
2096 .eh_bus_reset_handler = megasas_reset_bus_host,
2097 .eh_host_reset_handler = megasas_reset_bus_host,
2098 .eh_timed_out = megasas_reset_timer,
2099 .bios_param = megasas_bios_param,
2100 .use_clustering = ENABLE_CLUSTERING,
2101 .change_queue_depth = megasas_change_queue_depth,
2106 * megasas_complete_int_cmd - Completes an internal command
2107 * @instance: Adapter soft state
2108 * @cmd: Command to be completed
2110 * The megasas_issue_blocked_cmd() function waits for a command to complete
2111 * after it issues a command. This function wakes up that waiting routine by
2112 * calling wake_up() on the wait queue.
2115 megasas_complete_int_cmd(struct megasas_instance *instance,
2116 struct megasas_cmd *cmd)
2118 cmd->cmd_status = cmd->frame->io.cmd_status;
2120 if (cmd->cmd_status == ENODATA) {
2121 cmd->cmd_status = 0;
2123 wake_up(&instance->int_cmd_wait_q);
2127 * megasas_complete_abort - Completes aborting a command
2128 * @instance: Adapter soft state
2129 * @cmd: Cmd that was issued to abort another cmd
2131 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
2132 * after it issues an abort on a previously issued command. This function
2133 * wakes up all functions waiting on the same wait queue.
2136 megasas_complete_abort(struct megasas_instance *instance,
2137 struct megasas_cmd *cmd)
2139 if (cmd->sync_cmd) {
2141 cmd->cmd_status = 0;
2142 wake_up(&instance->abort_cmd_wait_q);
2149 * megasas_complete_cmd - Completes a command
2150 * @instance: Adapter soft state
2151 * @cmd: Command to be completed
2152 * @alt_status: If non-zero, use this value as status to
2153 * SCSI mid-layer instead of the value returned
2154 * by the FW. This should be used if caller wants
2155 * an alternate status (as in the case of aborted
2159 megasas_complete_cmd(struct megasas_instance *instance, struct megasas_cmd *cmd,
2163 struct megasas_header *hdr = &cmd->frame->hdr;
2164 unsigned long flags;
2165 struct fusion_context *fusion = instance->ctrl_context;
2167 /* flag for the retry reset */
2168 cmd->retry_for_fw_reset = 0;
2171 cmd->scmd->SCp.ptr = NULL;
2174 case MFI_CMD_INVALID:
2175 /* Some older 1068 controller FW may keep a pended
2176 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
2177 when booting the kdump kernel. Ignore this command to
2178 prevent a kernel panic on shutdown of the kdump kernel. */
2179 printk(KERN_WARNING "megaraid_sas: MFI_CMD_INVALID command "
2181 printk(KERN_WARNING "megaraid_sas: If you have a controller "
2182 "other than PERC5, please upgrade your firmware.\n");
2184 case MFI_CMD_PD_SCSI_IO:
2185 case MFI_CMD_LD_SCSI_IO:
2188 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
2189 * issued either through an IO path or an IOCTL path. If it
2190 * was via IOCTL, we will send it to internal completion.
2192 if (cmd->sync_cmd) {
2194 megasas_complete_int_cmd(instance, cmd);
2198 case MFI_CMD_LD_READ:
2199 case MFI_CMD_LD_WRITE:
2202 cmd->scmd->result = alt_status << 16;
2208 atomic_dec(&instance->fw_outstanding);
2210 scsi_dma_unmap(cmd->scmd);
2211 cmd->scmd->scsi_done(cmd->scmd);
2212 megasas_return_cmd(instance, cmd);
2217 switch (hdr->cmd_status) {
2220 cmd->scmd->result = DID_OK << 16;
2223 case MFI_STAT_SCSI_IO_FAILED:
2224 case MFI_STAT_LD_INIT_IN_PROGRESS:
2226 (DID_ERROR << 16) | hdr->scsi_status;
2229 case MFI_STAT_SCSI_DONE_WITH_ERROR:
2231 cmd->scmd->result = (DID_OK << 16) | hdr->scsi_status;
2233 if (hdr->scsi_status == SAM_STAT_CHECK_CONDITION) {
2234 memset(cmd->scmd->sense_buffer, 0,
2235 SCSI_SENSE_BUFFERSIZE);
2236 memcpy(cmd->scmd->sense_buffer, cmd->sense,
2239 cmd->scmd->result |= DRIVER_SENSE << 24;
2244 case MFI_STAT_LD_OFFLINE:
2245 case MFI_STAT_DEVICE_NOT_FOUND:
2246 cmd->scmd->result = DID_BAD_TARGET << 16;
2250 printk(KERN_DEBUG "megasas: MFI FW status %#x\n",
2252 cmd->scmd->result = DID_ERROR << 16;
2256 atomic_dec(&instance->fw_outstanding);
2258 scsi_dma_unmap(cmd->scmd);
2259 cmd->scmd->scsi_done(cmd->scmd);
2260 megasas_return_cmd(instance, cmd);
2267 /* Check for LD map update */
2268 if ((cmd->frame->dcmd.opcode == MR_DCMD_LD_MAP_GET_INFO) &&
2269 (cmd->frame->dcmd.mbox.b[1] == 1)) {
2270 spin_lock_irqsave(instance->host->host_lock, flags);
2271 if (cmd->frame->hdr.cmd_status != 0) {
2272 if (cmd->frame->hdr.cmd_status !=
2274 printk(KERN_WARNING "megasas: map sync"
2275 "failed, status = 0x%x.\n",
2276 cmd->frame->hdr.cmd_status);
2278 megasas_return_cmd(instance, cmd);
2279 spin_unlock_irqrestore(
2280 instance->host->host_lock,
2286 megasas_return_cmd(instance, cmd);
2287 if (MR_ValidateMapInfo(
2288 fusion->ld_map[(instance->map_id & 1)],
2289 fusion->load_balance_info))
2290 fusion->fast_path_io = 1;
2292 fusion->fast_path_io = 0;
2293 megasas_sync_map_info(instance);
2294 spin_unlock_irqrestore(instance->host->host_lock,
2298 if (cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_GET_INFO ||
2299 cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_GET) {
2300 spin_lock_irqsave(&poll_aen_lock, flags);
2301 megasas_poll_wait_aen = 0;
2302 spin_unlock_irqrestore(&poll_aen_lock, flags);
2306 * See if got an event notification
2308 if (cmd->frame->dcmd.opcode == MR_DCMD_CTRL_EVENT_WAIT)
2309 megasas_service_aen(instance, cmd);
2311 megasas_complete_int_cmd(instance, cmd);
2317 * Cmd issued to abort another cmd returned
2319 megasas_complete_abort(instance, cmd);
2323 printk("megasas: Unknown command completed! [0x%X]\n",
2330 * megasas_issue_pending_cmds_again - issue all pending cmds
2331 * in FW again because of the fw reset
2332 * @instance: Adapter soft state
2335 megasas_issue_pending_cmds_again(struct megasas_instance *instance)
2337 struct megasas_cmd *cmd;
2338 struct list_head clist_local;
2339 union megasas_evt_class_locale class_locale;
2340 unsigned long flags;
2343 INIT_LIST_HEAD(&clist_local);
2344 spin_lock_irqsave(&instance->hba_lock, flags);
2345 list_splice_init(&instance->internal_reset_pending_q, &clist_local);
2346 spin_unlock_irqrestore(&instance->hba_lock, flags);
2348 while (!list_empty(&clist_local)) {
2349 cmd = list_entry((&clist_local)->next,
2350 struct megasas_cmd, list);
2351 list_del_init(&cmd->list);
2353 if (cmd->sync_cmd || cmd->scmd) {
2354 printk(KERN_NOTICE "megaraid_sas: command %p, %p:%d"
2355 "detected to be pending while HBA reset.\n",
2356 cmd, cmd->scmd, cmd->sync_cmd);
2358 cmd->retry_for_fw_reset++;
2360 if (cmd->retry_for_fw_reset == 3) {
2361 printk(KERN_NOTICE "megaraid_sas: cmd %p, %p:%d"
2362 "was tried multiple times during reset."
2363 "Shutting down the HBA\n",
2364 cmd, cmd->scmd, cmd->sync_cmd);
2365 megaraid_sas_kill_hba(instance);
2367 instance->adprecovery =
2368 MEGASAS_HW_CRITICAL_ERROR;
2373 if (cmd->sync_cmd == 1) {
2375 printk(KERN_NOTICE "megaraid_sas: unexpected"
2376 "cmd attached to internal command!\n");
2378 printk(KERN_NOTICE "megasas: %p synchronous cmd"
2379 "on the internal reset queue,"
2380 "issue it again.\n", cmd);
2381 cmd->cmd_status = ENODATA;
2382 instance->instancet->fire_cmd(instance,
2383 cmd->frame_phys_addr ,
2384 0, instance->reg_set);
2385 } else if (cmd->scmd) {
2386 printk(KERN_NOTICE "megasas: %p scsi cmd [%02x]"
2387 "detected on the internal queue, issue again.\n",
2388 cmd, cmd->scmd->cmnd[0]);
2390 atomic_inc(&instance->fw_outstanding);
2391 instance->instancet->fire_cmd(instance,
2392 cmd->frame_phys_addr,
2393 cmd->frame_count-1, instance->reg_set);
2395 printk(KERN_NOTICE "megasas: %p unexpected cmd on the"
2396 "internal reset defer list while re-issue!!\n",
2401 if (instance->aen_cmd) {
2402 printk(KERN_NOTICE "megaraid_sas: aen_cmd in def process\n");
2403 megasas_return_cmd(instance, instance->aen_cmd);
2405 instance->aen_cmd = NULL;
2409 * Initiate AEN (Asynchronous Event Notification)
2411 seq_num = instance->last_seq_num;
2412 class_locale.members.reserved = 0;
2413 class_locale.members.locale = MR_EVT_LOCALE_ALL;
2414 class_locale.members.class = MR_EVT_CLASS_DEBUG;
2416 megasas_register_aen(instance, seq_num, class_locale.word);
2420 * Move the internal reset pending commands to a deferred queue.
2422 * We move the commands pending at internal reset time to a
2423 * pending queue. This queue would be flushed after successful
2424 * completion of the internal reset sequence. if the internal reset
2425 * did not complete in time, the kernel reset handler would flush
2429 megasas_internal_reset_defer_cmds(struct megasas_instance *instance)
2431 struct megasas_cmd *cmd;
2433 u32 max_cmd = instance->max_fw_cmds;
2435 unsigned long flags;
2438 spin_lock_irqsave(&instance->cmd_pool_lock, flags);
2439 for (i = 0; i < max_cmd; i++) {
2440 cmd = instance->cmd_list[i];
2441 if (cmd->sync_cmd == 1 || cmd->scmd) {
2442 printk(KERN_NOTICE "megasas: moving cmd[%d]:%p:%d:%p"
2443 "on the defer queue as internal\n",
2444 defer_index, cmd, cmd->sync_cmd, cmd->scmd);
2446 if (!list_empty(&cmd->list)) {
2447 printk(KERN_NOTICE "megaraid_sas: ERROR while"
2448 " moving this cmd:%p, %d %p, it was"
2449 "discovered on some list?\n",
2450 cmd, cmd->sync_cmd, cmd->scmd);
2452 list_del_init(&cmd->list);
2455 list_add_tail(&cmd->list,
2456 &instance->internal_reset_pending_q);
2459 spin_unlock_irqrestore(&instance->cmd_pool_lock, flags);
2464 process_fw_state_change_wq(struct work_struct *work)
2466 struct megasas_instance *instance =
2467 container_of(work, struct megasas_instance, work_init);
2469 unsigned long flags;
2471 if (instance->adprecovery != MEGASAS_ADPRESET_SM_INFAULT) {
2472 printk(KERN_NOTICE "megaraid_sas: error, recovery st %x \n",
2473 instance->adprecovery);
2477 if (instance->adprecovery == MEGASAS_ADPRESET_SM_INFAULT) {
2478 printk(KERN_NOTICE "megaraid_sas: FW detected to be in fault"
2479 "state, restarting it...\n");
2481 instance->instancet->disable_intr(instance->reg_set);
2482 atomic_set(&instance->fw_outstanding, 0);
2484 atomic_set(&instance->fw_reset_no_pci_access, 1);
2485 instance->instancet->adp_reset(instance, instance->reg_set);
2486 atomic_set(&instance->fw_reset_no_pci_access, 0 );
2488 printk(KERN_NOTICE "megaraid_sas: FW restarted successfully,"
2489 "initiating next stage...\n");
2491 printk(KERN_NOTICE "megaraid_sas: HBA recovery state machine,"
2492 "state 2 starting...\n");
2494 /*waitting for about 20 second before start the second init*/
2495 for (wait = 0; wait < 30; wait++) {
2499 if (megasas_transition_to_ready(instance, 1)) {
2500 printk(KERN_NOTICE "megaraid_sas:adapter not ready\n");
2502 megaraid_sas_kill_hba(instance);
2503 instance->adprecovery = MEGASAS_HW_CRITICAL_ERROR;
2507 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS1064R) ||
2508 (instance->pdev->device == PCI_DEVICE_ID_DELL_PERC5) ||
2509 (instance->pdev->device == PCI_DEVICE_ID_LSI_VERDE_ZCR)
2511 *instance->consumer = *instance->producer;
2513 *instance->consumer = 0;
2514 *instance->producer = 0;
2517 megasas_issue_init_mfi(instance);
2519 spin_lock_irqsave(&instance->hba_lock, flags);
2520 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
2521 spin_unlock_irqrestore(&instance->hba_lock, flags);
2522 instance->instancet->enable_intr(instance->reg_set);
2524 megasas_issue_pending_cmds_again(instance);
2525 instance->issuepend_done = 1;
2531 * megasas_deplete_reply_queue - Processes all completed commands
2532 * @instance: Adapter soft state
2533 * @alt_status: Alternate status to be returned to
2534 * SCSI mid-layer instead of the status
2535 * returned by the FW
2536 * Note: this must be called with hba lock held
2539 megasas_deplete_reply_queue(struct megasas_instance *instance,
2545 if ((mfiStatus = instance->instancet->check_reset(instance,
2546 instance->reg_set)) == 1) {
2550 if ((mfiStatus = instance->instancet->clear_intr(
2553 /* Hardware may not set outbound_intr_status in MSI-X mode */
2554 if (!instance->msix_vectors)
2558 instance->mfiStatus = mfiStatus;
2560 if ((mfiStatus & MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE)) {
2561 fw_state = instance->instancet->read_fw_status_reg(
2562 instance->reg_set) & MFI_STATE_MASK;
2564 if (fw_state != MFI_STATE_FAULT) {
2565 printk(KERN_NOTICE "megaraid_sas: fw state:%x\n",
2569 if ((fw_state == MFI_STATE_FAULT) &&
2570 (instance->disableOnlineCtrlReset == 0)) {
2571 printk(KERN_NOTICE "megaraid_sas: wait adp restart\n");
2573 if ((instance->pdev->device ==
2574 PCI_DEVICE_ID_LSI_SAS1064R) ||
2575 (instance->pdev->device ==
2576 PCI_DEVICE_ID_DELL_PERC5) ||
2577 (instance->pdev->device ==
2578 PCI_DEVICE_ID_LSI_VERDE_ZCR)) {
2580 *instance->consumer =
2581 MEGASAS_ADPRESET_INPROG_SIGN;
2585 instance->instancet->disable_intr(instance->reg_set);
2586 instance->adprecovery = MEGASAS_ADPRESET_SM_INFAULT;
2587 instance->issuepend_done = 0;
2589 atomic_set(&instance->fw_outstanding, 0);
2590 megasas_internal_reset_defer_cmds(instance);
2592 printk(KERN_NOTICE "megasas: fwState=%x, stage:%d\n",
2593 fw_state, instance->adprecovery);
2595 schedule_work(&instance->work_init);
2599 printk(KERN_NOTICE "megasas: fwstate:%x, dis_OCR=%x\n",
2600 fw_state, instance->disableOnlineCtrlReset);
2604 tasklet_schedule(&instance->isr_tasklet);
2608 * megasas_isr - isr entry point
2610 static irqreturn_t megasas_isr(int irq, void *devp)
2612 struct megasas_irq_context *irq_context = devp;
2613 struct megasas_instance *instance = irq_context->instance;
2614 unsigned long flags;
2617 if (atomic_read(&instance->fw_reset_no_pci_access))
2620 spin_lock_irqsave(&instance->hba_lock, flags);
2621 rc = megasas_deplete_reply_queue(instance, DID_OK);
2622 spin_unlock_irqrestore(&instance->hba_lock, flags);
2628 * megasas_transition_to_ready - Move the FW to READY state
2629 * @instance: Adapter soft state
2631 * During the initialization, FW passes can potentially be in any one of
2632 * several possible states. If the FW in operational, waiting-for-handshake
2633 * states, driver must take steps to bring it to ready state. Otherwise, it
2634 * has to wait for the ready state.
2637 megasas_transition_to_ready(struct megasas_instance *instance, int ocr)
2643 u32 abs_state, curr_abs_state;
2645 fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) & MFI_STATE_MASK;
2647 if (fw_state != MFI_STATE_READY)
2648 printk(KERN_INFO "megasas: Waiting for FW to come to ready"
2651 while (fw_state != MFI_STATE_READY) {
2654 instance->instancet->read_fw_status_reg(instance->reg_set);
2658 case MFI_STATE_FAULT:
2659 printk(KERN_DEBUG "megasas: FW in FAULT state!!\n");
2661 max_wait = MEGASAS_RESET_WAIT_TIME;
2662 cur_state = MFI_STATE_FAULT;
2667 case MFI_STATE_WAIT_HANDSHAKE:
2669 * Set the CLR bit in inbound doorbell
2671 if ((instance->pdev->device ==
2672 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2673 (instance->pdev->device ==
2674 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2675 (instance->pdev->device ==
2676 PCI_DEVICE_ID_LSI_FUSION) ||
2677 (instance->pdev->device ==
2678 PCI_DEVICE_ID_LSI_INVADER)) {
2680 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
2681 &instance->reg_set->doorbell);
2684 MFI_INIT_CLEAR_HANDSHAKE|MFI_INIT_HOTPLUG,
2685 &instance->reg_set->inbound_doorbell);
2688 max_wait = MEGASAS_RESET_WAIT_TIME;
2689 cur_state = MFI_STATE_WAIT_HANDSHAKE;
2692 case MFI_STATE_BOOT_MESSAGE_PENDING:
2693 if ((instance->pdev->device ==
2694 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2695 (instance->pdev->device ==
2696 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2697 (instance->pdev->device ==
2698 PCI_DEVICE_ID_LSI_FUSION) ||
2699 (instance->pdev->device ==
2700 PCI_DEVICE_ID_LSI_INVADER)) {
2701 writel(MFI_INIT_HOTPLUG,
2702 &instance->reg_set->doorbell);
2704 writel(MFI_INIT_HOTPLUG,
2705 &instance->reg_set->inbound_doorbell);
2707 max_wait = MEGASAS_RESET_WAIT_TIME;
2708 cur_state = MFI_STATE_BOOT_MESSAGE_PENDING;
2711 case MFI_STATE_OPERATIONAL:
2713 * Bring it to READY state; assuming max wait 10 secs
2715 instance->instancet->disable_intr(instance->reg_set);
2716 if ((instance->pdev->device ==
2717 PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
2718 (instance->pdev->device ==
2719 PCI_DEVICE_ID_LSI_SAS0071SKINNY) ||
2720 (instance->pdev->device
2721 == PCI_DEVICE_ID_LSI_FUSION) ||
2722 (instance->pdev->device
2723 == PCI_DEVICE_ID_LSI_INVADER)) {
2724 writel(MFI_RESET_FLAGS,
2725 &instance->reg_set->doorbell);
2726 if ((instance->pdev->device ==
2727 PCI_DEVICE_ID_LSI_FUSION) ||
2728 (instance->pdev->device ==
2729 PCI_DEVICE_ID_LSI_INVADER)) {
2730 for (i = 0; i < (10 * 1000); i += 20) {
2741 writel(MFI_RESET_FLAGS,
2742 &instance->reg_set->inbound_doorbell);
2744 max_wait = MEGASAS_RESET_WAIT_TIME;
2745 cur_state = MFI_STATE_OPERATIONAL;
2748 case MFI_STATE_UNDEFINED:
2750 * This state should not last for more than 2 seconds
2752 max_wait = MEGASAS_RESET_WAIT_TIME;
2753 cur_state = MFI_STATE_UNDEFINED;
2756 case MFI_STATE_BB_INIT:
2757 max_wait = MEGASAS_RESET_WAIT_TIME;
2758 cur_state = MFI_STATE_BB_INIT;
2761 case MFI_STATE_FW_INIT:
2762 max_wait = MEGASAS_RESET_WAIT_TIME;
2763 cur_state = MFI_STATE_FW_INIT;
2766 case MFI_STATE_FW_INIT_2:
2767 max_wait = MEGASAS_RESET_WAIT_TIME;
2768 cur_state = MFI_STATE_FW_INIT_2;
2771 case MFI_STATE_DEVICE_SCAN:
2772 max_wait = MEGASAS_RESET_WAIT_TIME;
2773 cur_state = MFI_STATE_DEVICE_SCAN;
2776 case MFI_STATE_FLUSH_CACHE:
2777 max_wait = MEGASAS_RESET_WAIT_TIME;
2778 cur_state = MFI_STATE_FLUSH_CACHE;
2782 printk(KERN_DEBUG "megasas: Unknown state 0x%x\n",
2788 * The cur_state should not last for more than max_wait secs
2790 for (i = 0; i < (max_wait * 1000); i++) {
2791 fw_state = instance->instancet->read_fw_status_reg(instance->reg_set) &
2794 instance->instancet->read_fw_status_reg(instance->reg_set);
2796 if (abs_state == curr_abs_state) {
2803 * Return error if fw_state hasn't changed after max_wait
2805 if (curr_abs_state == abs_state) {
2806 printk(KERN_DEBUG "FW state [%d] hasn't changed "
2807 "in %d secs\n", fw_state, max_wait);
2811 printk(KERN_INFO "megasas: FW now in Ready state\n");
2817 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool
2818 * @instance: Adapter soft state
2820 static void megasas_teardown_frame_pool(struct megasas_instance *instance)
2823 u32 max_cmd = instance->max_mfi_cmds;
2824 struct megasas_cmd *cmd;
2826 if (!instance->frame_dma_pool)
2830 * Return all frames to pool
2832 for (i = 0; i < max_cmd; i++) {
2834 cmd = instance->cmd_list[i];
2837 pci_pool_free(instance->frame_dma_pool, cmd->frame,
2838 cmd->frame_phys_addr);
2841 pci_pool_free(instance->sense_dma_pool, cmd->sense,
2842 cmd->sense_phys_addr);
2846 * Now destroy the pool itself
2848 pci_pool_destroy(instance->frame_dma_pool);
2849 pci_pool_destroy(instance->sense_dma_pool);
2851 instance->frame_dma_pool = NULL;
2852 instance->sense_dma_pool = NULL;
2856 * megasas_create_frame_pool - Creates DMA pool for cmd frames
2857 * @instance: Adapter soft state
2859 * Each command packet has an embedded DMA memory buffer that is used for
2860 * filling MFI frame and the SG list that immediately follows the frame. This
2861 * function creates those DMA memory buffers for each command packet by using
2862 * PCI pool facility.
2864 static int megasas_create_frame_pool(struct megasas_instance *instance)
2872 struct megasas_cmd *cmd;
2874 max_cmd = instance->max_mfi_cmds;
2877 * Size of our frame is 64 bytes for MFI frame, followed by max SG
2878 * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer
2880 sge_sz = (IS_DMA64) ? sizeof(struct megasas_sge64) :
2881 sizeof(struct megasas_sge32);
2883 if (instance->flag_ieee) {
2884 sge_sz = sizeof(struct megasas_sge_skinny);
2888 * Calculated the number of 64byte frames required for SGL
2890 sgl_sz = sge_sz * instance->max_num_sge;
2891 frame_count = (sgl_sz + MEGAMFI_FRAME_SIZE - 1) / MEGAMFI_FRAME_SIZE;
2895 * We need one extra frame for the MFI command
2899 total_sz = MEGAMFI_FRAME_SIZE * frame_count;
2901 * Use DMA pool facility provided by PCI layer
2903 instance->frame_dma_pool = pci_pool_create("megasas frame pool",
2904 instance->pdev, total_sz, 64,
2907 if (!instance->frame_dma_pool) {
2908 printk(KERN_DEBUG "megasas: failed to setup frame pool\n");
2912 instance->sense_dma_pool = pci_pool_create("megasas sense pool",
2913 instance->pdev, 128, 4, 0);
2915 if (!instance->sense_dma_pool) {
2916 printk(KERN_DEBUG "megasas: failed to setup sense pool\n");
2918 pci_pool_destroy(instance->frame_dma_pool);
2919 instance->frame_dma_pool = NULL;
2925 * Allocate and attach a frame to each of the commands in cmd_list.
2926 * By making cmd->index as the context instead of the &cmd, we can
2927 * always use 32bit context regardless of the architecture
2929 for (i = 0; i < max_cmd; i++) {
2931 cmd = instance->cmd_list[i];
2933 cmd->frame = pci_pool_alloc(instance->frame_dma_pool,
2934 GFP_KERNEL, &cmd->frame_phys_addr);
2936 cmd->sense = pci_pool_alloc(instance->sense_dma_pool,
2937 GFP_KERNEL, &cmd->sense_phys_addr);
2940 * megasas_teardown_frame_pool() takes care of freeing
2941 * whatever has been allocated
2943 if (!cmd->frame || !cmd->sense) {
2944 printk(KERN_DEBUG "megasas: pci_pool_alloc failed \n");
2945 megasas_teardown_frame_pool(instance);
2949 memset(cmd->frame, 0, total_sz);
2950 cmd->frame->io.context = cmd->index;
2951 cmd->frame->io.pad_0 = 0;
2952 if ((instance->pdev->device != PCI_DEVICE_ID_LSI_FUSION) &&
2953 (instance->pdev->device != PCI_DEVICE_ID_LSI_INVADER) &&
2955 cmd->frame->hdr.cmd = MFI_CMD_INVALID;
2962 * megasas_free_cmds - Free all the cmds in the free cmd pool
2963 * @instance: Adapter soft state
2965 void megasas_free_cmds(struct megasas_instance *instance)
2968 /* First free the MFI frame pool */
2969 megasas_teardown_frame_pool(instance);
2971 /* Free all the commands in the cmd_list */
2972 for (i = 0; i < instance->max_mfi_cmds; i++)
2974 kfree(instance->cmd_list[i]);
2976 /* Free the cmd_list buffer itself */
2977 kfree(instance->cmd_list);
2978 instance->cmd_list = NULL;
2980 INIT_LIST_HEAD(&instance->cmd_pool);
2984 * megasas_alloc_cmds - Allocates the command packets
2985 * @instance: Adapter soft state
2987 * Each command that is issued to the FW, whether IO commands from the OS or
2988 * internal commands like IOCTLs, are wrapped in local data structure called
2989 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
2992 * Each frame has a 32-bit field called context (tag). This context is used
2993 * to get back the megasas_cmd from the frame when a frame gets completed in
2994 * the ISR. Typically the address of the megasas_cmd itself would be used as
2995 * the context. But we wanted to keep the differences between 32 and 64 bit
2996 * systems to the mininum. We always use 32 bit integers for the context. In
2997 * this driver, the 32 bit values are the indices into an array cmd_list.
2998 * This array is used only to look up the megasas_cmd given the context. The
2999 * free commands themselves are maintained in a linked list called cmd_pool.
3001 int megasas_alloc_cmds(struct megasas_instance *instance)
3006 struct megasas_cmd *cmd;
3008 max_cmd = instance->max_mfi_cmds;
3011 * instance->cmd_list is an array of struct megasas_cmd pointers.
3012 * Allocate the dynamic array first and then allocate individual
3015 instance->cmd_list = kcalloc(max_cmd, sizeof(struct megasas_cmd*), GFP_KERNEL);
3017 if (!instance->cmd_list) {
3018 printk(KERN_DEBUG "megasas: out of memory\n");
3022 memset(instance->cmd_list, 0, sizeof(struct megasas_cmd *) *max_cmd);
3024 for (i = 0; i < max_cmd; i++) {
3025 instance->cmd_list[i] = kmalloc(sizeof(struct megasas_cmd),
3028 if (!instance->cmd_list[i]) {
3030 for (j = 0; j < i; j++)
3031 kfree(instance->cmd_list[j]);
3033 kfree(instance->cmd_list);
3034 instance->cmd_list = NULL;
3041 * Add all the commands to command pool (instance->cmd_pool)
3043 for (i = 0; i < max_cmd; i++) {
3044 cmd = instance->cmd_list[i];
3045 memset(cmd, 0, sizeof(struct megasas_cmd));
3048 cmd->instance = instance;
3050 list_add_tail(&cmd->list, &instance->cmd_pool);
3054 * Create a frame pool and assign one frame to each cmd
3056 if (megasas_create_frame_pool(instance)) {
3057 printk(KERN_DEBUG "megasas: Error creating frame DMA pool\n");
3058 megasas_free_cmds(instance);
3065 * megasas_get_pd_list_info - Returns FW's pd_list structure
3066 * @instance: Adapter soft state
3067 * @pd_list: pd_list structure
3069 * Issues an internal command (DCMD) to get the FW's controller PD
3070 * list structure. This information is mainly used to find out SYSTEM
3071 * supported by the FW.
3074 megasas_get_pd_list(struct megasas_instance *instance)
3076 int ret = 0, pd_index = 0;
3077 struct megasas_cmd *cmd;
3078 struct megasas_dcmd_frame *dcmd;
3079 struct MR_PD_LIST *ci;
3080 struct MR_PD_ADDRESS *pd_addr;
3081 dma_addr_t ci_h = 0;
3083 cmd = megasas_get_cmd(instance);
3086 printk(KERN_DEBUG "megasas (get_pd_list): Failed to get cmd\n");
3090 dcmd = &cmd->frame->dcmd;
3092 ci = pci_alloc_consistent(instance->pdev,
3093 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST), &ci_h);
3096 printk(KERN_DEBUG "Failed to alloc mem for pd_list\n");
3097 megasas_return_cmd(instance, cmd);
3101 memset(ci, 0, sizeof(*ci));
3102 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3104 dcmd->mbox.b[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST;
3105 dcmd->mbox.b[1] = 0;
3106 dcmd->cmd = MFI_CMD_DCMD;
3107 dcmd->cmd_status = 0xFF;
3108 dcmd->sge_count = 1;
3109 dcmd->flags = MFI_FRAME_DIR_READ;
3112 dcmd->data_xfer_len = MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST);
3113 dcmd->opcode = MR_DCMD_PD_LIST_QUERY;
3114 dcmd->sgl.sge32[0].phys_addr = ci_h;
3115 dcmd->sgl.sge32[0].length = MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST);
3117 if (!megasas_issue_polled(instance, cmd)) {
3124 * the following function will get the instance PD LIST.
3131 (MEGASAS_MAX_PD_CHANNELS * MEGASAS_MAX_DEV_PER_CHANNEL))) {
3133 memset(instance->pd_list, 0,
3134 MEGASAS_MAX_PD * sizeof(struct megasas_pd_list));
3136 for (pd_index = 0; pd_index < ci->count; pd_index++) {
3138 instance->pd_list[pd_addr->deviceId].tid =
3140 instance->pd_list[pd_addr->deviceId].driveType =
3141 pd_addr->scsiDevType;
3142 instance->pd_list[pd_addr->deviceId].driveState =
3148 pci_free_consistent(instance->pdev,
3149 MEGASAS_MAX_PD * sizeof(struct MR_PD_LIST),
3151 megasas_return_cmd(instance, cmd);
3157 * megasas_get_ld_list_info - Returns FW's ld_list structure
3158 * @instance: Adapter soft state
3159 * @ld_list: ld_list structure
3161 * Issues an internal command (DCMD) to get the FW's controller PD
3162 * list structure. This information is mainly used to find out SYSTEM
3163 * supported by the FW.
3166 megasas_get_ld_list(struct megasas_instance *instance)
3168 int ret = 0, ld_index = 0, ids = 0;
3169 struct megasas_cmd *cmd;
3170 struct megasas_dcmd_frame *dcmd;
3171 struct MR_LD_LIST *ci;
3172 dma_addr_t ci_h = 0;
3174 cmd = megasas_get_cmd(instance);
3177 printk(KERN_DEBUG "megasas_get_ld_list: Failed to get cmd\n");
3181 dcmd = &cmd->frame->dcmd;
3183 ci = pci_alloc_consistent(instance->pdev,
3184 sizeof(struct MR_LD_LIST),
3188 printk(KERN_DEBUG "Failed to alloc mem in get_ld_list\n");
3189 megasas_return_cmd(instance, cmd);
3193 memset(ci, 0, sizeof(*ci));
3194 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3196 dcmd->cmd = MFI_CMD_DCMD;
3197 dcmd->cmd_status = 0xFF;
3198 dcmd->sge_count = 1;
3199 dcmd->flags = MFI_FRAME_DIR_READ;
3201 dcmd->data_xfer_len = sizeof(struct MR_LD_LIST);
3202 dcmd->opcode = MR_DCMD_LD_GET_LIST;
3203 dcmd->sgl.sge32[0].phys_addr = ci_h;
3204 dcmd->sgl.sge32[0].length = sizeof(struct MR_LD_LIST);
3207 if (!megasas_issue_polled(instance, cmd)) {
3213 /* the following function will get the instance PD LIST */
3215 if ((ret == 0) && (ci->ldCount <= MAX_LOGICAL_DRIVES)) {
3216 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
3218 for (ld_index = 0; ld_index < ci->ldCount; ld_index++) {
3219 if (ci->ldList[ld_index].state != 0) {
3220 ids = ci->ldList[ld_index].ref.targetId;
3221 instance->ld_ids[ids] =
3222 ci->ldList[ld_index].ref.targetId;
3227 pci_free_consistent(instance->pdev,
3228 sizeof(struct MR_LD_LIST),
3232 megasas_return_cmd(instance, cmd);
3237 * megasas_get_controller_info - Returns FW's controller structure
3238 * @instance: Adapter soft state
3239 * @ctrl_info: Controller information structure
3241 * Issues an internal command (DCMD) to get the FW's controller structure.
3242 * This information is mainly used to find out the maximum IO transfer per
3243 * command supported by the FW.
3246 megasas_get_ctrl_info(struct megasas_instance *instance,
3247 struct megasas_ctrl_info *ctrl_info)
3250 struct megasas_cmd *cmd;
3251 struct megasas_dcmd_frame *dcmd;
3252 struct megasas_ctrl_info *ci;
3253 dma_addr_t ci_h = 0;
3255 cmd = megasas_get_cmd(instance);
3258 printk(KERN_DEBUG "megasas: Failed to get a free cmd\n");
3262 dcmd = &cmd->frame->dcmd;
3264 ci = pci_alloc_consistent(instance->pdev,
3265 sizeof(struct megasas_ctrl_info), &ci_h);
3268 printk(KERN_DEBUG "Failed to alloc mem for ctrl info\n");
3269 megasas_return_cmd(instance, cmd);
3273 memset(ci, 0, sizeof(*ci));
3274 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3276 dcmd->cmd = MFI_CMD_DCMD;
3277 dcmd->cmd_status = 0xFF;
3278 dcmd->sge_count = 1;
3279 dcmd->flags = MFI_FRAME_DIR_READ;
3282 dcmd->data_xfer_len = sizeof(struct megasas_ctrl_info);
3283 dcmd->opcode = MR_DCMD_CTRL_GET_INFO;
3284 dcmd->sgl.sge32[0].phys_addr = ci_h;
3285 dcmd->sgl.sge32[0].length = sizeof(struct megasas_ctrl_info);
3287 if (!megasas_issue_polled(instance, cmd)) {
3289 memcpy(ctrl_info, ci, sizeof(struct megasas_ctrl_info));
3294 pci_free_consistent(instance->pdev, sizeof(struct megasas_ctrl_info),
3297 megasas_return_cmd(instance, cmd);
3302 * megasas_issue_init_mfi - Initializes the FW
3303 * @instance: Adapter soft state
3305 * Issues the INIT MFI cmd
3308 megasas_issue_init_mfi(struct megasas_instance *instance)
3312 struct megasas_cmd *cmd;
3314 struct megasas_init_frame *init_frame;
3315 struct megasas_init_queue_info *initq_info;
3316 dma_addr_t init_frame_h;
3317 dma_addr_t initq_info_h;
3320 * Prepare a init frame. Note the init frame points to queue info
3321 * structure. Each frame has SGL allocated after first 64 bytes. For
3322 * this frame - since we don't need any SGL - we use SGL's space as
3323 * queue info structure
3325 * We will not get a NULL command below. We just created the pool.
3327 cmd = megasas_get_cmd(instance);
3329 init_frame = (struct megasas_init_frame *)cmd->frame;
3330 initq_info = (struct megasas_init_queue_info *)
3331 ((unsigned long)init_frame + 64);
3333 init_frame_h = cmd->frame_phys_addr;
3334 initq_info_h = init_frame_h + 64;
3336 context = init_frame->context;
3337 memset(init_frame, 0, MEGAMFI_FRAME_SIZE);
3338 memset(initq_info, 0, sizeof(struct megasas_init_queue_info));
3339 init_frame->context = context;
3341 initq_info->reply_queue_entries = instance->max_fw_cmds + 1;
3342 initq_info->reply_queue_start_phys_addr_lo = instance->reply_queue_h;
3344 initq_info->producer_index_phys_addr_lo = instance->producer_h;
3345 initq_info->consumer_index_phys_addr_lo = instance->consumer_h;
3347 init_frame->cmd = MFI_CMD_INIT;
3348 init_frame->cmd_status = 0xFF;
3349 init_frame->queue_info_new_phys_addr_lo = initq_info_h;
3351 init_frame->data_xfer_len = sizeof(struct megasas_init_queue_info);
3354 * disable the intr before firing the init frame to FW
3356 instance->instancet->disable_intr(instance->reg_set);
3359 * Issue the init frame in polled mode
3362 if (megasas_issue_polled(instance, cmd)) {
3363 printk(KERN_ERR "megasas: Failed to init firmware\n");
3364 megasas_return_cmd(instance, cmd);
3368 megasas_return_cmd(instance, cmd);
3377 megasas_init_adapter_mfi(struct megasas_instance *instance)
3379 struct megasas_register_set __iomem *reg_set;
3383 reg_set = instance->reg_set;
3386 * Get various operational parameters from status register
3388 instance->max_fw_cmds = instance->instancet->read_fw_status_reg(reg_set) & 0x00FFFF;
3390 * Reduce the max supported cmds by 1. This is to ensure that the
3391 * reply_q_sz (1 more than the max cmd that driver may send)
3392 * does not exceed max cmds that the FW can support
3394 instance->max_fw_cmds = instance->max_fw_cmds-1;
3395 instance->max_mfi_cmds = instance->max_fw_cmds;
3396 instance->max_num_sge = (instance->instancet->read_fw_status_reg(reg_set) & 0xFF0000) >>
3399 * Create a pool of commands
3401 if (megasas_alloc_cmds(instance))
3402 goto fail_alloc_cmds;
3405 * Allocate memory for reply queue. Length of reply queue should
3406 * be _one_ more than the maximum commands handled by the firmware.
3408 * Note: When FW completes commands, it places corresponding contex
3409 * values in this circular reply queue. This circular queue is a fairly
3410 * typical producer-consumer queue. FW is the producer (of completed
3411 * commands) and the driver is the consumer.
3413 context_sz = sizeof(u32);
3414 reply_q_sz = context_sz * (instance->max_fw_cmds + 1);
3416 instance->reply_queue = pci_alloc_consistent(instance->pdev,
3418 &instance->reply_queue_h);
3420 if (!instance->reply_queue) {
3421 printk(KERN_DEBUG "megasas: Out of DMA mem for reply queue\n");
3422 goto fail_reply_queue;
3425 if (megasas_issue_init_mfi(instance))
3428 instance->fw_support_ieee = 0;
3429 instance->fw_support_ieee =
3430 (instance->instancet->read_fw_status_reg(reg_set) &
3433 printk(KERN_NOTICE "megasas_init_mfi: fw_support_ieee=%d",
3434 instance->fw_support_ieee);
3436 if (instance->fw_support_ieee)
3437 instance->flag_ieee = 1;
3443 pci_free_consistent(instance->pdev, reply_q_sz,
3444 instance->reply_queue, instance->reply_queue_h);
3446 megasas_free_cmds(instance);
3453 * megasas_init_fw - Initializes the FW
3454 * @instance: Adapter soft state
3456 * This is the main function for initializing firmware
3459 static int megasas_init_fw(struct megasas_instance *instance)
3463 u32 tmp_sectors, msix_enable;
3464 resource_size_t base_addr;
3465 struct megasas_register_set __iomem *reg_set;
3466 struct megasas_ctrl_info *ctrl_info;
3467 unsigned long bar_list;
3470 /* Find first memory bar */
3471 bar_list = pci_select_bars(instance->pdev, IORESOURCE_MEM);
3472 instance->bar = find_first_bit(&bar_list, sizeof(unsigned long));
3473 if (pci_request_selected_regions(instance->pdev, instance->bar,
3475 printk(KERN_DEBUG "megasas: IO memory region busy!\n");
3479 base_addr = pci_resource_start(instance->pdev, instance->bar);
3480 instance->reg_set = ioremap_nocache(base_addr, 8192);
3482 if (!instance->reg_set) {
3483 printk(KERN_DEBUG "megasas: Failed to map IO mem\n");
3487 reg_set = instance->reg_set;
3489 switch (instance->pdev->device) {
3490 case PCI_DEVICE_ID_LSI_FUSION:
3491 case PCI_DEVICE_ID_LSI_INVADER:
3492 instance->instancet = &megasas_instance_template_fusion;
3494 case PCI_DEVICE_ID_LSI_SAS1078R:
3495 case PCI_DEVICE_ID_LSI_SAS1078DE:
3496 instance->instancet = &megasas_instance_template_ppc;
3498 case PCI_DEVICE_ID_LSI_SAS1078GEN2:
3499 case PCI_DEVICE_ID_LSI_SAS0079GEN2:
3500 instance->instancet = &megasas_instance_template_gen2;
3502 case PCI_DEVICE_ID_LSI_SAS0073SKINNY:
3503 case PCI_DEVICE_ID_LSI_SAS0071SKINNY:
3504 instance->instancet = &megasas_instance_template_skinny;
3506 case PCI_DEVICE_ID_LSI_SAS1064R:
3507 case PCI_DEVICE_ID_DELL_PERC5:
3509 instance->instancet = &megasas_instance_template_xscale;
3513 if (megasas_transition_to_ready(instance, 0)) {
3514 atomic_set(&instance->fw_reset_no_pci_access, 1);
3515 instance->instancet->adp_reset
3516 (instance, instance->reg_set);
3517 atomic_set(&instance->fw_reset_no_pci_access, 0);
3518 dev_info(&instance->pdev->dev,
3519 "megasas: FW restarted successfully from %s!\n",
3522 /*waitting for about 30 second before retry*/
3525 if (megasas_transition_to_ready(instance, 0))
3526 goto fail_ready_state;
3529 /* Check if MSI-X is supported while in ready state */
3530 msix_enable = (instance->instancet->read_fw_status_reg(reg_set) &
3532 if (msix_enable && !msix_disable) {
3533 /* Check max MSI-X vectors */
3534 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
3535 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)) {
3536 instance->msix_vectors = (readl(&instance->reg_set->
3537 outbound_scratch_pad_2
3540 instance->msix_vectors =
3542 instance->msix_vectors);
3544 instance->msix_vectors = 1;
3545 /* Don't bother allocating more MSI-X vectors than cpus */
3546 instance->msix_vectors = min(instance->msix_vectors,
3547 (unsigned int)num_online_cpus());
3548 for (i = 0; i < instance->msix_vectors; i++)
3549 instance->msixentry[i].entry = i;
3550 i = pci_enable_msix(instance->pdev, instance->msixentry,
3551 instance->msix_vectors);
3554 if (!pci_enable_msix(instance->pdev,
3555 instance->msixentry, i))
3556 instance->msix_vectors = i;
3558 instance->msix_vectors = 0;
3561 instance->msix_vectors = 0;
3564 /* Get operational params, sge flags, send init cmd to controller */
3565 if (instance->instancet->init_adapter(instance))
3566 goto fail_init_adapter;
3568 printk(KERN_ERR "megasas: INIT adapter done\n");
3571 * the following function will get the PD LIST.
3574 memset(instance->pd_list, 0 ,
3575 (MEGASAS_MAX_PD * sizeof(struct megasas_pd_list)));
3576 megasas_get_pd_list(instance);
3578 memset(instance->ld_ids, 0xff, MEGASAS_MAX_LD_IDS);
3579 megasas_get_ld_list(instance);
3581 ctrl_info = kmalloc(sizeof(struct megasas_ctrl_info), GFP_KERNEL);
3584 * Compute the max allowed sectors per IO: The controller info has two
3585 * limits on max sectors. Driver should use the minimum of these two.
3587 * 1 << stripe_sz_ops.min = max sectors per strip
3589 * Note that older firmwares ( < FW ver 30) didn't report information
3590 * to calculate max_sectors_1. So the number ended up as zero always.
3593 if (ctrl_info && !megasas_get_ctrl_info(instance, ctrl_info)) {
3595 max_sectors_1 = (1 << ctrl_info->stripe_sz_ops.min) *
3596 ctrl_info->max_strips_per_io;
3597 max_sectors_2 = ctrl_info->max_request_size;
3599 tmp_sectors = min_t(u32, max_sectors_1 , max_sectors_2);
3600 instance->disableOnlineCtrlReset =
3601 ctrl_info->properties.OnOffProperties.disableOnlineCtrlReset;
3604 instance->max_sectors_per_req = instance->max_num_sge *
3606 if (tmp_sectors && (instance->max_sectors_per_req > tmp_sectors))
3607 instance->max_sectors_per_req = tmp_sectors;
3611 /* Check for valid throttlequeuedepth module parameter */
3612 if (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY ||
3613 instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY) {
3614 if (throttlequeuedepth > (instance->max_fw_cmds -
3615 MEGASAS_SKINNY_INT_CMDS))
3616 instance->throttlequeuedepth =
3617 MEGASAS_THROTTLE_QUEUE_DEPTH;
3619 instance->throttlequeuedepth = throttlequeuedepth;
3621 if (throttlequeuedepth > (instance->max_fw_cmds -
3623 instance->throttlequeuedepth =
3624 MEGASAS_THROTTLE_QUEUE_DEPTH;
3626 instance->throttlequeuedepth = throttlequeuedepth;
3630 * Setup tasklet for cmd completion
3633 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
3634 (unsigned long)instance);
3640 iounmap(instance->reg_set);
3643 pci_release_selected_regions(instance->pdev, instance->bar);
3649 * megasas_release_mfi - Reverses the FW initialization
3650 * @intance: Adapter soft state
3652 static void megasas_release_mfi(struct megasas_instance *instance)
3654 u32 reply_q_sz = sizeof(u32) *(instance->max_mfi_cmds + 1);
3656 if (instance->reply_queue)
3657 pci_free_consistent(instance->pdev, reply_q_sz,
3658 instance->reply_queue, instance->reply_queue_h);
3660 megasas_free_cmds(instance);
3662 iounmap(instance->reg_set);
3664 pci_release_selected_regions(instance->pdev, instance->bar);
3668 * megasas_get_seq_num - Gets latest event sequence numbers
3669 * @instance: Adapter soft state
3670 * @eli: FW event log sequence numbers information
3672 * FW maintains a log of all events in a non-volatile area. Upper layers would
3673 * usually find out the latest sequence number of the events, the seq number at
3674 * the boot etc. They would "read" all the events below the latest seq number
3675 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
3676 * number), they would subsribe to AEN (asynchronous event notification) and
3677 * wait for the events to happen.
3680 megasas_get_seq_num(struct megasas_instance *instance,
3681 struct megasas_evt_log_info *eli)
3683 struct megasas_cmd *cmd;
3684 struct megasas_dcmd_frame *dcmd;
3685 struct megasas_evt_log_info *el_info;
3686 dma_addr_t el_info_h = 0;
3688 cmd = megasas_get_cmd(instance);
3694 dcmd = &cmd->frame->dcmd;
3695 el_info = pci_alloc_consistent(instance->pdev,
3696 sizeof(struct megasas_evt_log_info),
3700 megasas_return_cmd(instance, cmd);
3704 memset(el_info, 0, sizeof(*el_info));
3705 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3707 dcmd->cmd = MFI_CMD_DCMD;
3708 dcmd->cmd_status = 0x0;
3709 dcmd->sge_count = 1;
3710 dcmd->flags = MFI_FRAME_DIR_READ;
3713 dcmd->data_xfer_len = sizeof(struct megasas_evt_log_info);
3714 dcmd->opcode = MR_DCMD_CTRL_EVENT_GET_INFO;
3715 dcmd->sgl.sge32[0].phys_addr = el_info_h;
3716 dcmd->sgl.sge32[0].length = sizeof(struct megasas_evt_log_info);
3718 megasas_issue_blocked_cmd(instance, cmd);
3721 * Copy the data back into callers buffer
3723 memcpy(eli, el_info, sizeof(struct megasas_evt_log_info));
3725 pci_free_consistent(instance->pdev, sizeof(struct megasas_evt_log_info),
3726 el_info, el_info_h);
3728 megasas_return_cmd(instance, cmd);
3734 * megasas_register_aen - Registers for asynchronous event notification
3735 * @instance: Adapter soft state
3736 * @seq_num: The starting sequence number
3737 * @class_locale: Class of the event
3739 * This function subscribes for AEN for events beyond the @seq_num. It requests
3740 * to be notified if and only if the event is of type @class_locale
3743 megasas_register_aen(struct megasas_instance *instance, u32 seq_num,
3744 u32 class_locale_word)
3747 struct megasas_cmd *cmd;
3748 struct megasas_dcmd_frame *dcmd;
3749 union megasas_evt_class_locale curr_aen;
3750 union megasas_evt_class_locale prev_aen;
3753 * If there an AEN pending already (aen_cmd), check if the
3754 * class_locale of that pending AEN is inclusive of the new
3755 * AEN request we currently have. If it is, then we don't have
3756 * to do anything. In other words, whichever events the current
3757 * AEN request is subscribing to, have already been subscribed
3760 * If the old_cmd is _not_ inclusive, then we have to abort
3761 * that command, form a class_locale that is superset of both
3762 * old and current and re-issue to the FW
3765 curr_aen.word = class_locale_word;
3767 if (instance->aen_cmd) {
3769 prev_aen.word = instance->aen_cmd->frame->dcmd.mbox.w[1];
3772 * A class whose enum value is smaller is inclusive of all
3773 * higher values. If a PROGRESS (= -1) was previously
3774 * registered, then a new registration requests for higher
3775 * classes need not be sent to FW. They are automatically
3778 * Locale numbers don't have such hierarchy. They are bitmap
3781 if ((prev_aen.members.class <= curr_aen.members.class) &&
3782 !((prev_aen.members.locale & curr_aen.members.locale) ^
3783 curr_aen.members.locale)) {
3785 * Previously issued event registration includes
3786 * current request. Nothing to do.
3790 curr_aen.members.locale |= prev_aen.members.locale;
3792 if (prev_aen.members.class < curr_aen.members.class)
3793 curr_aen.members.class = prev_aen.members.class;
3795 instance->aen_cmd->abort_aen = 1;
3796 ret_val = megasas_issue_blocked_abort_cmd(instance,
3801 printk(KERN_DEBUG "megasas: Failed to abort "
3802 "previous AEN command\n");
3808 cmd = megasas_get_cmd(instance);
3813 dcmd = &cmd->frame->dcmd;
3815 memset(instance->evt_detail, 0, sizeof(struct megasas_evt_detail));
3818 * Prepare DCMD for aen registration
3820 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
3822 dcmd->cmd = MFI_CMD_DCMD;
3823 dcmd->cmd_status = 0x0;
3824 dcmd->sge_count = 1;
3825 dcmd->flags = MFI_FRAME_DIR_READ;
3828 instance->last_seq_num = seq_num;
3829 dcmd->data_xfer_len = sizeof(struct megasas_evt_detail);
3830 dcmd->opcode = MR_DCMD_CTRL_EVENT_WAIT;
3831 dcmd->mbox.w[0] = seq_num;
3832 dcmd->mbox.w[1] = curr_aen.word;
3833 dcmd->sgl.sge32[0].phys_addr = (u32) instance->evt_detail_h;
3834 dcmd->sgl.sge32[0].length = sizeof(struct megasas_evt_detail);
3836 if (instance->aen_cmd != NULL) {
3837 megasas_return_cmd(instance, cmd);
3842 * Store reference to the cmd used to register for AEN. When an
3843 * application wants us to register for AEN, we have to abort this
3844 * cmd and re-register with a new EVENT LOCALE supplied by that app
3846 instance->aen_cmd = cmd;
3849 * Issue the aen registration frame
3851 instance->instancet->issue_dcmd(instance, cmd);
3857 * megasas_start_aen - Subscribes to AEN during driver load time
3858 * @instance: Adapter soft state
3860 static int megasas_start_aen(struct megasas_instance *instance)
3862 struct megasas_evt_log_info eli;
3863 union megasas_evt_class_locale class_locale;
3866 * Get the latest sequence number from FW
3868 memset(&eli, 0, sizeof(eli));
3870 if (megasas_get_seq_num(instance, &eli))
3874 * Register AEN with FW for latest sequence number plus 1
3876 class_locale.members.reserved = 0;
3877 class_locale.members.locale = MR_EVT_LOCALE_ALL;
3878 class_locale.members.class = MR_EVT_CLASS_DEBUG;
3880 return megasas_register_aen(instance, eli.newest_seq_num + 1,
3885 * megasas_io_attach - Attaches this driver to SCSI mid-layer
3886 * @instance: Adapter soft state
3888 static int megasas_io_attach(struct megasas_instance *instance)
3890 struct Scsi_Host *host = instance->host;
3893 * Export parameters required by SCSI mid-layer
3895 host->irq = instance->pdev->irq;
3896 host->unique_id = instance->unique_id;
3897 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
3898 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
3900 instance->max_fw_cmds - MEGASAS_SKINNY_INT_CMDS;
3903 instance->max_fw_cmds - MEGASAS_INT_CMDS;
3904 host->this_id = instance->init_id;
3905 host->sg_tablesize = instance->max_num_sge;
3907 if (instance->fw_support_ieee)
3908 instance->max_sectors_per_req = MEGASAS_MAX_SECTORS_IEEE;
3911 * Check if the module parameter value for max_sectors can be used
3913 if (max_sectors && max_sectors < instance->max_sectors_per_req)
3914 instance->max_sectors_per_req = max_sectors;
3917 if (((instance->pdev->device ==
3918 PCI_DEVICE_ID_LSI_SAS1078GEN2) ||
3919 (instance->pdev->device ==
3920 PCI_DEVICE_ID_LSI_SAS0079GEN2)) &&
3921 (max_sectors <= MEGASAS_MAX_SECTORS)) {
3922 instance->max_sectors_per_req = max_sectors;
3924 printk(KERN_INFO "megasas: max_sectors should be > 0"
3925 "and <= %d (or < 1MB for GEN2 controller)\n",
3926 instance->max_sectors_per_req);
3931 host->max_sectors = instance->max_sectors_per_req;
3932 host->cmd_per_lun = MEGASAS_DEFAULT_CMD_PER_LUN;
3933 host->max_channel = MEGASAS_MAX_CHANNELS - 1;
3934 host->max_id = MEGASAS_MAX_DEV_PER_CHANNEL;
3935 host->max_lun = MEGASAS_MAX_LUN;
3936 host->max_cmd_len = 16;
3938 /* Fusion only supports host reset */
3939 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
3940 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER)) {
3941 host->hostt->eh_device_reset_handler = NULL;
3942 host->hostt->eh_bus_reset_handler = NULL;
3946 * Notify the mid-layer about the new controller
3948 if (scsi_add_host(host, &instance->pdev->dev)) {
3949 printk(KERN_DEBUG "megasas: scsi_add_host failed\n");
3954 * Trigger SCSI to scan our drives
3956 scsi_scan_host(host);
3961 megasas_set_dma_mask(struct pci_dev *pdev)
3964 * All our contollers are capable of performing 64-bit DMA
3967 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(64)) != 0) {
3969 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
3970 goto fail_set_dma_mask;
3973 if (pci_set_dma_mask(pdev, DMA_BIT_MASK(32)) != 0)
3974 goto fail_set_dma_mask;
3983 * megasas_probe_one - PCI hotplug entry point
3984 * @pdev: PCI device structure
3985 * @id: PCI ids of supported hotplugged adapter
3987 static int megasas_probe_one(struct pci_dev *pdev,
3988 const struct pci_device_id *id)
3990 int rval, pos, i, j;
3991 struct Scsi_Host *host;
3992 struct megasas_instance *instance;
3995 /* Reset MSI-X in the kdump kernel */
3996 if (reset_devices) {
3997 pos = pci_find_capability(pdev, PCI_CAP_ID_MSIX);
3999 pci_read_config_word(pdev, pos + PCI_MSIX_FLAGS,
4001 if (control & PCI_MSIX_FLAGS_ENABLE) {
4002 dev_info(&pdev->dev, "resetting MSI-X\n");
4003 pci_write_config_word(pdev,
4004 pos + PCI_MSIX_FLAGS,
4006 ~PCI_MSIX_FLAGS_ENABLE);
4012 * Announce PCI information
4014 printk(KERN_INFO "megasas: %#4.04x:%#4.04x:%#4.04x:%#4.04x: ",
4015 pdev->vendor, pdev->device, pdev->subsystem_vendor,
4016 pdev->subsystem_device);
4018 printk("bus %d:slot %d:func %d\n",
4019 pdev->bus->number, PCI_SLOT(pdev->devfn), PCI_FUNC(pdev->devfn));
4022 * PCI prepping: enable device set bus mastering and dma mask
4024 rval = pci_enable_device_mem(pdev);
4030 pci_set_master(pdev);
4032 if (megasas_set_dma_mask(pdev))
4033 goto fail_set_dma_mask;
4035 host = scsi_host_alloc(&megasas_template,
4036 sizeof(struct megasas_instance));
4039 printk(KERN_DEBUG "megasas: scsi_host_alloc failed\n");
4040 goto fail_alloc_instance;
4043 instance = (struct megasas_instance *)host->hostdata;
4044 memset(instance, 0, sizeof(*instance));
4045 atomic_set( &instance->fw_reset_no_pci_access, 0 );
4046 instance->pdev = pdev;
4048 switch (instance->pdev->device) {
4049 case PCI_DEVICE_ID_LSI_FUSION:
4050 case PCI_DEVICE_ID_LSI_INVADER:
4052 struct fusion_context *fusion;
4054 instance->ctrl_context =
4055 kzalloc(sizeof(struct fusion_context), GFP_KERNEL);
4056 if (!instance->ctrl_context) {
4057 printk(KERN_DEBUG "megasas: Failed to allocate "
4058 "memory for Fusion context info\n");
4059 goto fail_alloc_dma_buf;
4061 fusion = instance->ctrl_context;
4062 INIT_LIST_HEAD(&fusion->cmd_pool);
4063 spin_lock_init(&fusion->cmd_pool_lock);
4066 default: /* For all other supported controllers */
4068 instance->producer =
4069 pci_alloc_consistent(pdev, sizeof(u32),
4070 &instance->producer_h);
4071 instance->consumer =
4072 pci_alloc_consistent(pdev, sizeof(u32),
4073 &instance->consumer_h);
4075 if (!instance->producer || !instance->consumer) {
4076 printk(KERN_DEBUG "megasas: Failed to allocate"
4077 "memory for producer, consumer\n");
4078 goto fail_alloc_dma_buf;
4081 *instance->producer = 0;
4082 *instance->consumer = 0;
4086 megasas_poll_wait_aen = 0;
4087 instance->flag_ieee = 0;
4088 instance->ev = NULL;
4089 instance->issuepend_done = 1;
4090 instance->adprecovery = MEGASAS_HBA_OPERATIONAL;
4091 megasas_poll_wait_aen = 0;
4093 instance->evt_detail = pci_alloc_consistent(pdev,
4095 megasas_evt_detail),
4096 &instance->evt_detail_h);
4098 if (!instance->evt_detail) {
4099 printk(KERN_DEBUG "megasas: Failed to allocate memory for "
4100 "event detail structure\n");
4101 goto fail_alloc_dma_buf;
4105 * Initialize locks and queues
4107 INIT_LIST_HEAD(&instance->cmd_pool);
4108 INIT_LIST_HEAD(&instance->internal_reset_pending_q);
4110 atomic_set(&instance->fw_outstanding,0);
4112 init_waitqueue_head(&instance->int_cmd_wait_q);
4113 init_waitqueue_head(&instance->abort_cmd_wait_q);
4115 spin_lock_init(&instance->cmd_pool_lock);
4116 spin_lock_init(&instance->hba_lock);
4117 spin_lock_init(&instance->completion_lock);
4119 mutex_init(&instance->aen_mutex);
4120 mutex_init(&instance->reset_mutex);
4123 * Initialize PCI related and misc parameters
4125 instance->host = host;
4126 instance->unique_id = pdev->bus->number << 8 | pdev->devfn;
4127 instance->init_id = MEGASAS_DEFAULT_INIT_ID;
4129 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0073SKINNY) ||
4130 (instance->pdev->device == PCI_DEVICE_ID_LSI_SAS0071SKINNY)) {
4131 instance->flag_ieee = 1;
4132 sema_init(&instance->ioctl_sem, MEGASAS_SKINNY_INT_CMDS);
4134 sema_init(&instance->ioctl_sem, MEGASAS_INT_CMDS);
4136 megasas_dbg_lvl = 0;
4138 instance->unload = 1;
4139 instance->last_time = 0;
4140 instance->disableOnlineCtrlReset = 1;
4142 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
4143 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER))
4144 INIT_WORK(&instance->work_init, megasas_fusion_ocr_wq);
4146 INIT_WORK(&instance->work_init, process_fw_state_change_wq);
4149 * Initialize MFI Firmware
4151 if (megasas_init_fw(instance))
4157 if (instance->msix_vectors) {
4158 for (i = 0 ; i < instance->msix_vectors; i++) {
4159 instance->irq_context[i].instance = instance;
4160 instance->irq_context[i].MSIxIndex = i;
4161 if (request_irq(instance->msixentry[i].vector,
4162 instance->instancet->service_isr, 0,
4164 &instance->irq_context[i])) {
4165 printk(KERN_DEBUG "megasas: Failed to "
4166 "register IRQ for vector %d.\n", i);
4167 for (j = 0 ; j < i ; j++)
4169 instance->msixentry[j].vector,
4170 &instance->irq_context[j]);
4175 instance->irq_context[0].instance = instance;
4176 instance->irq_context[0].MSIxIndex = 0;
4177 if (request_irq(pdev->irq, instance->instancet->service_isr,
4178 IRQF_SHARED, "megasas",
4179 &instance->irq_context[0])) {
4180 printk(KERN_DEBUG "megasas: Failed to register IRQ\n");
4185 instance->instancet->enable_intr(instance->reg_set);
4188 * Store instance in PCI softstate
4190 pci_set_drvdata(pdev, instance);
4193 * Add this controller to megasas_mgmt_info structure so that it
4194 * can be exported to management applications
4196 megasas_mgmt_info.count++;
4197 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = instance;
4198 megasas_mgmt_info.max_index++;
4201 * Register with SCSI mid-layer
4203 if (megasas_io_attach(instance))
4204 goto fail_io_attach;
4206 instance->unload = 0;
4209 * Initiate AEN (Asynchronous Event Notification)
4211 if (megasas_start_aen(instance)) {
4212 printk(KERN_DEBUG "megasas: start aen failed\n");
4213 goto fail_start_aen;
4220 megasas_mgmt_info.count--;
4221 megasas_mgmt_info.instance[megasas_mgmt_info.max_index] = NULL;
4222 megasas_mgmt_info.max_index--;
4224 pci_set_drvdata(pdev, NULL);
4225 instance->instancet->disable_intr(instance->reg_set);
4226 if (instance->msix_vectors)
4227 for (i = 0 ; i < instance->msix_vectors; i++)
4228 free_irq(instance->msixentry[i].vector,
4229 &instance->irq_context[i]);
4231 free_irq(instance->pdev->irq, &instance->irq_context[0]);
4233 if ((instance->pdev->device == PCI_DEVICE_ID_LSI_FUSION) ||
4234 (instance->pdev->device == PCI_DEVICE_ID_LSI_INVADER))
4235 megasas_release_fusion(instance);
4237 megasas_release_mfi(instance);
4239 if (instance->msix_vectors)
4240 pci_disable_msix(instance->pdev);
4242 if (instance->evt_detail)
4243 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
4244 instance->evt_detail,
4245 instance->evt_detail_h);
4247 if (instance->producer)
4248 pci_free_consistent(pdev, sizeof(u32), instance->producer,
4249 instance->producer_h);
4250 if (instance->consumer)
4251 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
4252 instance->consumer_h);
4253 scsi_host_put(host);
4255 fail_alloc_instance:
4257 pci_disable_device(pdev);
4263 * megasas_flush_cache - Requests FW to flush all its caches
4264 * @instance: Adapter soft state
4266 static void megasas_flush_cache(struct megasas_instance *instance)
4268 struct megasas_cmd *cmd;
4269 struct megasas_dcmd_frame *dcmd;
4271 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
4274 cmd = megasas_get_cmd(instance);
4279 dcmd = &cmd->frame->dcmd;
4281 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4283 dcmd->cmd = MFI_CMD_DCMD;
4284 dcmd->cmd_status = 0x0;
4285 dcmd->sge_count = 0;
4286 dcmd->flags = MFI_FRAME_DIR_NONE;
4289 dcmd->data_xfer_len = 0;
4290 dcmd->opcode = MR_DCMD_CTRL_CACHE_FLUSH;
4291 dcmd->mbox.b[0] = MR_FLUSH_CTRL_CACHE | MR_FLUSH_DISK_CACHE;
4293 megasas_issue_blocked_cmd(instance, cmd);
4295 megasas_return_cmd(instance, cmd);
4301 * megasas_shutdown_controller - Instructs FW to shutdown the controller
4302 * @instance: Adapter soft state
4303 * @opcode: Shutdown/Hibernate
4305 static void megasas_shutdown_controller(struct megasas_instance *instance,
4308 struct megasas_cmd *cmd;
4309 struct megasas_dcmd_frame *dcmd;
4311 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR)
4314 cmd = megasas_get_cmd(instance);
4319 if (instance->aen_cmd)
4320 megasas_issue_blocked_abort_cmd(instance, instance->aen_cmd);
4321 if (instance->map_update_cmd)
4322 megasas_issue_blocked_abort_cmd(instance,
4323 instance->map_update_cmd);
4324 dcmd = &cmd->frame->dcmd;
4326 memset(dcmd->mbox.b, 0, MFI_MBOX_SIZE);
4328 dcmd->cmd = MFI_CMD_DCMD;
4329 dcmd->cmd_status = 0x0;
4330 dcmd->sge_count = 0;
4331 dcmd->flags = MFI_FRAME_DIR_NONE;
4334 dcmd->data_xfer_len = 0;
4335 dcmd->opcode = opcode;
4337 megasas_issue_blocked_cmd(instance, cmd);
4339 megasas_return_cmd(instance, cmd);
4346 * megasas_suspend - driver suspend entry point
4347 * @pdev: PCI device structure
4348 * @state: PCI power state to suspend routine
4351 megasas_suspend(struct pci_dev *pdev, pm_message_t state)
4353 struct Scsi_Host *host;
4354 struct megasas_instance *instance;
4357 instance = pci_get_drvdata(pdev);
4358 host = instance->host;
4359 instance->unload = 1;
4361 megasas_flush_cache(instance);
4362 megasas_shutdown_controller(instance, MR_DCMD_HIBERNATE_SHUTDOWN);
4364 /* cancel the delayed work if this work still in queue */
4365 if (instance->ev != NULL) {
4366 struct megasas_aen_event *ev = instance->ev;
4367 cancel_delayed_work_sync(&ev->hotplug_work);
4368 instance->ev = NULL;
4371 tasklet_kill(&instance->isr_tasklet);
4373 pci_set_drvdata(instance->pdev, instance);
4374 instance->instancet->disable_intr(instance->reg_set);
4376 if (instance->msix_vectors)
4377 for (i = 0 ; i < instance->msix_vectors; i++)
4378 free_irq(instance->msixentry[i].vector,
4379 &instance->irq_context[i]);
4381 free_irq(instance->pdev->irq, &instance->irq_context[0]);
4382 if (instance->msix_vectors)
4383 pci_disable_msix(instance->pdev);
4385 pci_save_state(pdev);
4386 pci_disable_device(pdev);
4388 pci_set_power_state(pdev, pci_choose_state(pdev, state));
4394 * megasas_resume- driver resume entry point
4395 * @pdev: PCI device structure
4398 megasas_resume(struct pci_dev *pdev)
4401 struct Scsi_Host *host;
4402 struct megasas_instance *instance;
4404 instance = pci_get_drvdata(pdev);
4405 host = instance->host;
4406 pci_set_power_state(pdev, PCI_D0);
4407 pci_enable_wake(pdev, PCI_D0, 0);
4408 pci_restore_state(pdev);
4411 * PCI prepping: enable device set bus mastering and dma mask
4413 rval = pci_enable_device_mem(pdev);
4416 printk(KERN_ERR "megasas: Enable device failed\n");
4420 pci_set_master(pdev);
4422 if (megasas_set_dma_mask(pdev))
4423 goto fail_set_dma_mask;
4426 * Initialize MFI Firmware
4429 atomic_set(&instance->fw_outstanding, 0);
4432 * We expect the FW state to be READY
4434 if (megasas_transition_to_ready(instance, 0))
4435 goto fail_ready_state;
4437 /* Now re-enable MSI-X */
4438 if (instance->msix_vectors)
4439 pci_enable_msix(instance->pdev, instance->msixentry,
4440 instance->msix_vectors);
4442 switch (instance->pdev->device) {
4443 case PCI_DEVICE_ID_LSI_FUSION:
4444 case PCI_DEVICE_ID_LSI_INVADER:
4446 megasas_reset_reply_desc(instance);
4447 if (megasas_ioc_init_fusion(instance)) {
4448 megasas_free_cmds(instance);
4449 megasas_free_cmds_fusion(instance);
4452 if (!megasas_get_map_info(instance))
4453 megasas_sync_map_info(instance);
4457 *instance->producer = 0;
4458 *instance->consumer = 0;
4459 if (megasas_issue_init_mfi(instance))
4464 tasklet_init(&instance->isr_tasklet, instance->instancet->tasklet,
4465 (unsigned long)instance);
4470 if (instance->msix_vectors) {
4471 for (i = 0 ; i < instance->msix_vectors; i++) {
4472 instance->irq_context[i].instance = instance;
4473 instance->irq_context[i].MSIxIndex = i;
4474 if (request_irq(instance->msixentry[i].vector,
4475 instance->instancet->service_isr, 0,
4477 &instance->irq_context[i])) {
4478 printk(KERN_DEBUG "megasas: Failed to "
4479 "register IRQ for vector %d.\n", i);
4480 for (j = 0 ; j < i ; j++)
4482 instance->msixentry[j].vector,
4483 &instance->irq_context[j]);
4488 instance->irq_context[0].instance = instance;
4489 instance->irq_context[0].MSIxIndex = 0;
4490 if (request_irq(pdev->irq, instance->instancet->service_isr,
4491 IRQF_SHARED, "megasas",
4492 &instance->irq_context[0])) {
4493 printk(KERN_DEBUG "megasas: Failed to register IRQ\n");
4498 instance->instancet->enable_intr(instance->reg_set);
4499 instance->unload = 0;
4502 * Initiate AEN (Asynchronous Event Notification)
4504 if (megasas_start_aen(instance))
4505 printk(KERN_ERR "megasas: Start AEN failed\n");
4511 if (instance->evt_detail)
4512 pci_free_consistent(pdev, sizeof(struct megasas_evt_detail),
4513 instance->evt_detail,
4514 instance->evt_detail_h);
4516 if (instance->producer)
4517 pci_free_consistent(pdev, sizeof(u32), instance->producer,
4518 instance->producer_h);
4519 if (instance->consumer)
4520 pci_free_consistent(pdev, sizeof(u32), instance->consumer,
4521 instance->consumer_h);
4522 scsi_host_put(host);
4527 pci_disable_device(pdev);
4532 #define megasas_suspend NULL
4533 #define megasas_resume NULL
4537 * megasas_detach_one - PCI hot"un"plug entry point
4538 * @pdev: PCI device structure
4540 static void megasas_detach_one(struct pci_dev *pdev)
4543 struct Scsi_Host *host;
4544 struct megasas_instance *instance;
4545 struct fusion_context *fusion;
4547 instance = pci_get_drvdata(pdev);
4548 instance->unload = 1;
4549 host = instance->host;
4550 fusion = instance->ctrl_context;
4552 scsi_remove_host(instance->host);
4553 megasas_flush_cache(instance);
4554 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
4556 /* cancel the delayed work if this work still in queue*/
4557 if (instance->ev != NULL) {
4558 struct megasas_aen_event *ev = instance->ev;
4559 cancel_delayed_work_sync(&ev->hotplug_work);
4560 instance->ev = NULL;
4563 tasklet_kill(&instance->isr_tasklet);
4566 * Take the instance off the instance array. Note that we will not
4567 * decrement the max_index. We let this array be sparse array
4569 for (i = 0; i < megasas_mgmt_info.max_index; i++) {
4570 if (megasas_mgmt_info.instance[i] == instance) {
4571 megasas_mgmt_info.count--;
4572 megasas_mgmt_info.instance[i] = NULL;
4578 pci_set_drvdata(instance->pdev, NULL);
4580 instance->instancet->disable_intr(instance->reg_set);
4582 if (instance->msix_vectors)
4583 for (i = 0 ; i < instance->msix_vectors; i++)
4584 free_irq(instance->msixentry[i].vector,
4585 &instance->irq_context[i]);
4587 free_irq(instance->pdev->irq, &instance->irq_context[0]);
4588 if (instance->msix_vectors)
4589 pci_disable_msix(instance->pdev);
4591 switch (instance->pdev->device) {
4592 case PCI_DEVICE_ID_LSI_FUSION:
4593 case PCI_DEVICE_ID_LSI_INVADER:
4594 megasas_release_fusion(instance);
4595 for (i = 0; i < 2 ; i++)
4596 if (fusion->ld_map[i])
4597 dma_free_coherent(&instance->pdev->dev,
4602 kfree(instance->ctrl_context);
4605 megasas_release_mfi(instance);
4606 pci_free_consistent(pdev,
4607 sizeof(struct megasas_evt_detail),
4608 instance->evt_detail,
4609 instance->evt_detail_h);
4610 pci_free_consistent(pdev, sizeof(u32),
4612 instance->producer_h);
4613 pci_free_consistent(pdev, sizeof(u32),
4615 instance->consumer_h);
4619 scsi_host_put(host);
4621 pci_set_drvdata(pdev, NULL);
4623 pci_disable_device(pdev);
4629 * megasas_shutdown - Shutdown entry point
4630 * @device: Generic device structure
4632 static void megasas_shutdown(struct pci_dev *pdev)
4635 struct megasas_instance *instance = pci_get_drvdata(pdev);
4637 instance->unload = 1;
4638 megasas_flush_cache(instance);
4639 megasas_shutdown_controller(instance, MR_DCMD_CTRL_SHUTDOWN);
4640 instance->instancet->disable_intr(instance->reg_set);
4641 if (instance->msix_vectors)
4642 for (i = 0 ; i < instance->msix_vectors; i++)
4643 free_irq(instance->msixentry[i].vector,
4644 &instance->irq_context[i]);
4646 free_irq(instance->pdev->irq, &instance->irq_context[0]);
4647 if (instance->msix_vectors)
4648 pci_disable_msix(instance->pdev);
4652 * megasas_mgmt_open - char node "open" entry point
4654 static int megasas_mgmt_open(struct inode *inode, struct file *filep)
4657 * Allow only those users with admin rights
4659 if (!capable(CAP_SYS_ADMIN))
4666 * megasas_mgmt_fasync - Async notifier registration from applications
4668 * This function adds the calling process to a driver global queue. When an
4669 * event occurs, SIGIO will be sent to all processes in this queue.
4671 static int megasas_mgmt_fasync(int fd, struct file *filep, int mode)
4675 mutex_lock(&megasas_async_queue_mutex);
4677 rc = fasync_helper(fd, filep, mode, &megasas_async_queue);
4679 mutex_unlock(&megasas_async_queue_mutex);
4682 /* For sanity check when we get ioctl */
4683 filep->private_data = filep;
4687 printk(KERN_DEBUG "megasas: fasync_helper failed [%d]\n", rc);
4693 * megasas_mgmt_poll - char node "poll" entry point
4695 static unsigned int megasas_mgmt_poll(struct file *file, poll_table *wait)
4698 unsigned long flags;
4699 poll_wait(file, &megasas_poll_wait, wait);
4700 spin_lock_irqsave(&poll_aen_lock, flags);
4701 if (megasas_poll_wait_aen)
4702 mask = (POLLIN | POLLRDNORM);
4705 spin_unlock_irqrestore(&poll_aen_lock, flags);
4710 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW
4711 * @instance: Adapter soft state
4712 * @argp: User's ioctl packet
4715 megasas_mgmt_fw_ioctl(struct megasas_instance *instance,
4716 struct megasas_iocpacket __user * user_ioc,
4717 struct megasas_iocpacket *ioc)
4719 struct megasas_sge32 *kern_sge32;
4720 struct megasas_cmd *cmd;
4721 void *kbuff_arr[MAX_IOCTL_SGE];
4722 dma_addr_t buf_handle = 0;
4725 dma_addr_t sense_handle;
4726 unsigned long *sense_ptr;
4728 memset(kbuff_arr, 0, sizeof(kbuff_arr));
4730 if (ioc->sge_count > MAX_IOCTL_SGE) {
4731 printk(KERN_DEBUG "megasas: SGE count [%d] > max limit [%d]\n",
4732 ioc->sge_count, MAX_IOCTL_SGE);
4736 cmd = megasas_get_cmd(instance);
4738 printk(KERN_DEBUG "megasas: Failed to get a cmd packet\n");
4743 * User's IOCTL packet has 2 frames (maximum). Copy those two
4744 * frames into our cmd's frames. cmd->frame's context will get
4745 * overwritten when we copy from user's frames. So set that value
4748 memcpy(cmd->frame, ioc->frame.raw, 2 * MEGAMFI_FRAME_SIZE);
4749 cmd->frame->hdr.context = cmd->index;
4750 cmd->frame->hdr.pad_0 = 0;
4751 cmd->frame->hdr.flags &= ~(MFI_FRAME_IEEE | MFI_FRAME_SGL64 |
4755 * The management interface between applications and the fw uses
4756 * MFI frames. E.g, RAID configuration changes, LD property changes
4757 * etc are accomplishes through different kinds of MFI frames. The
4758 * driver needs to care only about substituting user buffers with
4759 * kernel buffers in SGLs. The location of SGL is embedded in the
4760 * struct iocpacket itself.
4762 kern_sge32 = (struct megasas_sge32 *)
4763 ((unsigned long)cmd->frame + ioc->sgl_off);
4766 * For each user buffer, create a mirror buffer and copy in
4768 for (i = 0; i < ioc->sge_count; i++) {
4769 if (!ioc->sgl[i].iov_len)
4772 kbuff_arr[i] = dma_alloc_coherent(&instance->pdev->dev,
4773 ioc->sgl[i].iov_len,
4774 &buf_handle, GFP_KERNEL);
4775 if (!kbuff_arr[i]) {
4776 printk(KERN_DEBUG "megasas: Failed to alloc "
4777 "kernel SGL buffer for IOCTL \n");
4783 * We don't change the dma_coherent_mask, so
4784 * pci_alloc_consistent only returns 32bit addresses
4786 kern_sge32[i].phys_addr = (u32) buf_handle;
4787 kern_sge32[i].length = ioc->sgl[i].iov_len;
4790 * We created a kernel buffer corresponding to the
4791 * user buffer. Now copy in from the user buffer
4793 if (copy_from_user(kbuff_arr[i], ioc->sgl[i].iov_base,
4794 (u32) (ioc->sgl[i].iov_len))) {
4800 if (ioc->sense_len) {
4801 sense = dma_alloc_coherent(&instance->pdev->dev, ioc->sense_len,
4802 &sense_handle, GFP_KERNEL);
4809 (unsigned long *) ((unsigned long)cmd->frame + ioc->sense_off);
4810 *sense_ptr = sense_handle;
4814 * Set the sync_cmd flag so that the ISR knows not to complete this
4815 * cmd to the SCSI mid-layer
4818 megasas_issue_blocked_cmd(instance, cmd);
4822 * copy out the kernel buffers to user buffers
4824 for (i = 0; i < ioc->sge_count; i++) {
4825 if (copy_to_user(ioc->sgl[i].iov_base, kbuff_arr[i],
4826 ioc->sgl[i].iov_len)) {
4833 * copy out the sense
4835 if (ioc->sense_len) {
4837 * sense_ptr points to the location that has the user
4838 * sense buffer address
4840 sense_ptr = (unsigned long *) ((unsigned long)ioc->frame.raw +
4843 if (copy_to_user((void __user *)((unsigned long)(*sense_ptr)),
4844 sense, ioc->sense_len)) {
4845 printk(KERN_ERR "megasas: Failed to copy out to user "
4853 * copy the status codes returned by the fw
4855 if (copy_to_user(&user_ioc->frame.hdr.cmd_status,
4856 &cmd->frame->hdr.cmd_status, sizeof(u8))) {
4857 printk(KERN_DEBUG "megasas: Error copying out cmd_status\n");
4863 dma_free_coherent(&instance->pdev->dev, ioc->sense_len,
4864 sense, sense_handle);
4867 for (i = 0; i < ioc->sge_count; i++) {
4869 dma_free_coherent(&instance->pdev->dev,
4870 kern_sge32[i].length,
4872 kern_sge32[i].phys_addr);
4875 megasas_return_cmd(instance, cmd);
4879 static int megasas_mgmt_ioctl_fw(struct file *file, unsigned long arg)
4881 struct megasas_iocpacket __user *user_ioc =
4882 (struct megasas_iocpacket __user *)arg;
4883 struct megasas_iocpacket *ioc;
4884 struct megasas_instance *instance;
4887 unsigned long flags;
4888 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
4890 ioc = kmalloc(sizeof(*ioc), GFP_KERNEL);
4894 if (copy_from_user(ioc, user_ioc, sizeof(*ioc))) {
4899 instance = megasas_lookup_instance(ioc->host_no);
4905 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
4906 printk(KERN_ERR "Controller in crit error\n");
4911 if (instance->unload == 1) {
4917 * We will allow only MEGASAS_INT_CMDS number of parallel ioctl cmds
4919 if (down_interruptible(&instance->ioctl_sem)) {
4920 error = -ERESTARTSYS;
4924 for (i = 0; i < wait_time; i++) {
4926 spin_lock_irqsave(&instance->hba_lock, flags);
4927 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
4928 spin_unlock_irqrestore(&instance->hba_lock, flags);
4931 spin_unlock_irqrestore(&instance->hba_lock, flags);
4933 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
4934 printk(KERN_NOTICE "megasas: waiting"
4935 "for controller reset to finish\n");
4941 spin_lock_irqsave(&instance->hba_lock, flags);
4942 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
4943 spin_unlock_irqrestore(&instance->hba_lock, flags);
4945 printk(KERN_ERR "megaraid_sas: timed out while"
4946 "waiting for HBA to recover\n");
4950 spin_unlock_irqrestore(&instance->hba_lock, flags);
4952 error = megasas_mgmt_fw_ioctl(instance, user_ioc, ioc);
4954 up(&instance->ioctl_sem);
4961 static int megasas_mgmt_ioctl_aen(struct file *file, unsigned long arg)
4963 struct megasas_instance *instance;
4964 struct megasas_aen aen;
4967 unsigned long flags;
4968 u32 wait_time = MEGASAS_RESET_WAIT_TIME;
4970 if (file->private_data != file) {
4971 printk(KERN_DEBUG "megasas: fasync_helper was not "
4976 if (copy_from_user(&aen, (void __user *)arg, sizeof(aen)))
4979 instance = megasas_lookup_instance(aen.host_no);
4984 if (instance->adprecovery == MEGASAS_HW_CRITICAL_ERROR) {
4988 if (instance->unload == 1) {
4992 for (i = 0; i < wait_time; i++) {
4994 spin_lock_irqsave(&instance->hba_lock, flags);
4995 if (instance->adprecovery == MEGASAS_HBA_OPERATIONAL) {
4996 spin_unlock_irqrestore(&instance->hba_lock,
5001 spin_unlock_irqrestore(&instance->hba_lock, flags);
5003 if (!(i % MEGASAS_RESET_NOTICE_INTERVAL)) {
5004 printk(KERN_NOTICE "megasas: waiting for"
5005 "controller reset to finish\n");
5011 spin_lock_irqsave(&instance->hba_lock, flags);
5012 if (instance->adprecovery != MEGASAS_HBA_OPERATIONAL) {
5013 spin_unlock_irqrestore(&instance->hba_lock, flags);
5014 printk(KERN_ERR "megaraid_sas: timed out while waiting"
5015 "for HBA to recover.\n");
5018 spin_unlock_irqrestore(&instance->hba_lock, flags);
5020 mutex_lock(&instance->aen_mutex);
5021 error = megasas_register_aen(instance, aen.seq_num,
5022 aen.class_locale_word);
5023 mutex_unlock(&instance->aen_mutex);
5028 * megasas_mgmt_ioctl - char node ioctl entry point
5031 megasas_mgmt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
5034 case MEGASAS_IOC_FIRMWARE:
5035 return megasas_mgmt_ioctl_fw(file, arg);
5037 case MEGASAS_IOC_GET_AEN:
5038 return megasas_mgmt_ioctl_aen(file, arg);
5044 #ifdef CONFIG_COMPAT
5045 static int megasas_mgmt_compat_ioctl_fw(struct file *file, unsigned long arg)
5047 struct compat_megasas_iocpacket __user *cioc =
5048 (struct compat_megasas_iocpacket __user *)arg;
5049 struct megasas_iocpacket __user *ioc =
5050 compat_alloc_user_space(sizeof(struct megasas_iocpacket));
5055 if (clear_user(ioc, sizeof(*ioc)))
5058 if (copy_in_user(&ioc->host_no, &cioc->host_no, sizeof(u16)) ||
5059 copy_in_user(&ioc->sgl_off, &cioc->sgl_off, sizeof(u32)) ||
5060 copy_in_user(&ioc->sense_off, &cioc->sense_off, sizeof(u32)) ||
5061 copy_in_user(&ioc->sense_len, &cioc->sense_len, sizeof(u32)) ||
5062 copy_in_user(ioc->frame.raw, cioc->frame.raw, 128) ||
5063 copy_in_user(&ioc->sge_count, &cioc->sge_count, sizeof(u32)))
5067 * The sense_ptr is used in megasas_mgmt_fw_ioctl only when
5068 * sense_len is not null, so prepare the 64bit value under
5069 * the same condition.
5071 if (ioc->sense_len) {
5072 void __user **sense_ioc_ptr =
5073 (void __user **)(ioc->frame.raw + ioc->sense_off);
5074 compat_uptr_t *sense_cioc_ptr =
5075 (compat_uptr_t *)(cioc->frame.raw + cioc->sense_off);
5076 if (get_user(ptr, sense_cioc_ptr) ||
5077 put_user(compat_ptr(ptr), sense_ioc_ptr))
5081 for (i = 0; i < MAX_IOCTL_SGE; i++) {
5082 if (get_user(ptr, &cioc->sgl[i].iov_base) ||
5083 put_user(compat_ptr(ptr), &ioc->sgl[i].iov_base) ||
5084 copy_in_user(&ioc->sgl[i].iov_len,
5085 &cioc->sgl[i].iov_len, sizeof(compat_size_t)))
5089 error = megasas_mgmt_ioctl_fw(file, (unsigned long)ioc);
5091 if (copy_in_user(&cioc->frame.hdr.cmd_status,
5092 &ioc->frame.hdr.cmd_status, sizeof(u8))) {
5093 printk(KERN_DEBUG "megasas: error copy_in_user cmd_status\n");
5100 megasas_mgmt_compat_ioctl(struct file *file, unsigned int cmd,
5104 case MEGASAS_IOC_FIRMWARE32:
5105 return megasas_mgmt_compat_ioctl_fw(file, arg);
5106 case MEGASAS_IOC_GET_AEN:
5107 return megasas_mgmt_ioctl_aen(file, arg);
5115 * File operations structure for management interface
5117 static const struct file_operations megasas_mgmt_fops = {
5118 .owner = THIS_MODULE,
5119 .open = megasas_mgmt_open,
5120 .fasync = megasas_mgmt_fasync,
5121 .unlocked_ioctl = megasas_mgmt_ioctl,
5122 .poll = megasas_mgmt_poll,
5123 #ifdef CONFIG_COMPAT
5124 .compat_ioctl = megasas_mgmt_compat_ioctl,
5126 .llseek = noop_llseek,
5130 * PCI hotplug support registration structure
5132 static struct pci_driver megasas_pci_driver = {
5134 .name = "megaraid_sas",
5135 .id_table = megasas_pci_table,
5136 .probe = megasas_probe_one,
5137 .remove = megasas_detach_one,
5138 .suspend = megasas_suspend,
5139 .resume = megasas_resume,
5140 .shutdown = megasas_shutdown,
5144 * Sysfs driver attributes
5146 static ssize_t megasas_sysfs_show_version(struct device_driver *dd, char *buf)
5148 return snprintf(buf, strlen(MEGASAS_VERSION) + 2, "%s\n",
5152 static DRIVER_ATTR(version, S_IRUGO, megasas_sysfs_show_version, NULL);
5155 megasas_sysfs_show_release_date(struct device_driver *dd, char *buf)
5157 return snprintf(buf, strlen(MEGASAS_RELDATE) + 2, "%s\n",
5161 static DRIVER_ATTR(release_date, S_IRUGO, megasas_sysfs_show_release_date,
5165 megasas_sysfs_show_support_poll_for_event(struct device_driver *dd, char *buf)
5167 return sprintf(buf, "%u\n", support_poll_for_event);
5170 static DRIVER_ATTR(support_poll_for_event, S_IRUGO,
5171 megasas_sysfs_show_support_poll_for_event, NULL);
5174 megasas_sysfs_show_support_device_change(struct device_driver *dd, char *buf)
5176 return sprintf(buf, "%u\n", support_device_change);
5179 static DRIVER_ATTR(support_device_change, S_IRUGO,
5180 megasas_sysfs_show_support_device_change, NULL);
5183 megasas_sysfs_show_dbg_lvl(struct device_driver *dd, char *buf)
5185 return sprintf(buf, "%u\n", megasas_dbg_lvl);
5189 megasas_sysfs_set_dbg_lvl(struct device_driver *dd, const char *buf, size_t count)
5192 if(sscanf(buf,"%u",&megasas_dbg_lvl)<1){
5193 printk(KERN_ERR "megasas: could not set dbg_lvl\n");
5199 static DRIVER_ATTR(dbg_lvl, S_IRUGO|S_IWUSR, megasas_sysfs_show_dbg_lvl,
5200 megasas_sysfs_set_dbg_lvl);
5203 megasas_aen_polling(struct work_struct *work)
5205 struct megasas_aen_event *ev =
5206 container_of(work, struct megasas_aen_event, hotplug_work.work);
5207 struct megasas_instance *instance = ev->instance;
5208 union megasas_evt_class_locale class_locale;
5209 struct Scsi_Host *host;
5210 struct scsi_device *sdev1;
5213 int i, j, doscan = 0;
5218 printk(KERN_ERR "invalid instance!\n");
5222 instance->ev = NULL;
5223 host = instance->host;
5224 if (instance->evt_detail) {
5226 switch (instance->evt_detail->code) {
5227 case MR_EVT_PD_INSERTED:
5228 if (megasas_get_pd_list(instance) == 0) {
5229 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
5231 j < MEGASAS_MAX_DEV_PER_CHANNEL;
5235 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
5238 scsi_device_lookup(host, i, j, 0);
5240 if (instance->pd_list[pd_index].driveState
5241 == MR_PD_STATE_SYSTEM) {
5243 scsi_add_device(host, i, j, 0);
5247 scsi_device_put(sdev1);
5255 case MR_EVT_PD_REMOVED:
5256 if (megasas_get_pd_list(instance) == 0) {
5257 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
5259 j < MEGASAS_MAX_DEV_PER_CHANNEL;
5263 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
5266 scsi_device_lookup(host, i, j, 0);
5268 if (instance->pd_list[pd_index].driveState
5269 == MR_PD_STATE_SYSTEM) {
5271 scsi_device_put(sdev1);
5275 scsi_remove_device(sdev1);
5276 scsi_device_put(sdev1);
5285 case MR_EVT_LD_OFFLINE:
5286 case MR_EVT_CFG_CLEARED:
5287 case MR_EVT_LD_DELETED:
5288 megasas_get_ld_list(instance);
5289 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
5291 j < MEGASAS_MAX_DEV_PER_CHANNEL;
5295 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
5297 sdev1 = scsi_device_lookup(host,
5298 i + MEGASAS_MAX_LD_CHANNELS,
5302 if (instance->ld_ids[ld_index] != 0xff) {
5304 scsi_device_put(sdev1);
5308 scsi_remove_device(sdev1);
5309 scsi_device_put(sdev1);
5316 case MR_EVT_LD_CREATED:
5317 megasas_get_ld_list(instance);
5318 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
5320 j < MEGASAS_MAX_DEV_PER_CHANNEL;
5323 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
5325 sdev1 = scsi_device_lookup(host,
5326 i+MEGASAS_MAX_LD_CHANNELS,
5329 if (instance->ld_ids[ld_index] !=
5332 scsi_add_device(host,
5338 scsi_device_put(sdev1);
5344 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED:
5345 case MR_EVT_FOREIGN_CFG_IMPORTED:
5346 case MR_EVT_LD_STATE_CHANGE:
5354 printk(KERN_ERR "invalid evt_detail!\n");
5360 printk(KERN_INFO "scanning ...\n");
5361 megasas_get_pd_list(instance);
5362 for (i = 0; i < MEGASAS_MAX_PD_CHANNELS; i++) {
5363 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
5364 pd_index = i*MEGASAS_MAX_DEV_PER_CHANNEL + j;
5365 sdev1 = scsi_device_lookup(host, i, j, 0);
5366 if (instance->pd_list[pd_index].driveState ==
5367 MR_PD_STATE_SYSTEM) {
5369 scsi_add_device(host, i, j, 0);
5372 scsi_device_put(sdev1);
5375 scsi_remove_device(sdev1);
5376 scsi_device_put(sdev1);
5382 megasas_get_ld_list(instance);
5383 for (i = 0; i < MEGASAS_MAX_LD_CHANNELS; i++) {
5384 for (j = 0; j < MEGASAS_MAX_DEV_PER_CHANNEL; j++) {
5386 (i * MEGASAS_MAX_DEV_PER_CHANNEL) + j;
5388 sdev1 = scsi_device_lookup(host,
5389 i+MEGASAS_MAX_LD_CHANNELS, j, 0);
5390 if (instance->ld_ids[ld_index] != 0xff) {
5392 scsi_add_device(host,
5396 scsi_device_put(sdev1);
5400 scsi_remove_device(sdev1);
5401 scsi_device_put(sdev1);
5408 if ( instance->aen_cmd != NULL ) {
5413 seq_num = instance->evt_detail->seq_num + 1;
5415 /* Register AEN with FW for latest sequence number plus 1 */
5416 class_locale.members.reserved = 0;
5417 class_locale.members.locale = MR_EVT_LOCALE_ALL;
5418 class_locale.members.class = MR_EVT_CLASS_DEBUG;
5419 mutex_lock(&instance->aen_mutex);
5420 error = megasas_register_aen(instance, seq_num,
5422 mutex_unlock(&instance->aen_mutex);
5425 printk(KERN_ERR "register aen failed error %x\n", error);
5431 * megasas_init - Driver load entry point
5433 static int __init megasas_init(void)
5438 * Announce driver version and other information
5440 printk(KERN_INFO "megasas: %s %s\n", MEGASAS_VERSION,
5441 MEGASAS_EXT_VERSION);
5443 spin_lock_init(&poll_aen_lock);
5445 support_poll_for_event = 2;
5446 support_device_change = 1;
5448 memset(&megasas_mgmt_info, 0, sizeof(megasas_mgmt_info));
5451 * Register character device node
5453 rval = register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops);
5456 printk(KERN_DEBUG "megasas: failed to open device node\n");
5460 megasas_mgmt_majorno = rval;
5463 * Register ourselves as PCI hotplug module
5465 rval = pci_register_driver(&megasas_pci_driver);
5468 printk(KERN_DEBUG "megasas: PCI hotplug regisration failed \n");
5472 rval = driver_create_file(&megasas_pci_driver.driver,
5473 &driver_attr_version);
5475 goto err_dcf_attr_ver;
5476 rval = driver_create_file(&megasas_pci_driver.driver,
5477 &driver_attr_release_date);
5479 goto err_dcf_rel_date;
5481 rval = driver_create_file(&megasas_pci_driver.driver,
5482 &driver_attr_support_poll_for_event);
5484 goto err_dcf_support_poll_for_event;
5486 rval = driver_create_file(&megasas_pci_driver.driver,
5487 &driver_attr_dbg_lvl);
5489 goto err_dcf_dbg_lvl;
5490 rval = driver_create_file(&megasas_pci_driver.driver,
5491 &driver_attr_support_device_change);
5493 goto err_dcf_support_device_change;
5497 err_dcf_support_device_change:
5498 driver_remove_file(&megasas_pci_driver.driver,
5499 &driver_attr_dbg_lvl);
5501 driver_remove_file(&megasas_pci_driver.driver,
5502 &driver_attr_support_poll_for_event);
5504 err_dcf_support_poll_for_event:
5505 driver_remove_file(&megasas_pci_driver.driver,
5506 &driver_attr_release_date);
5509 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
5511 pci_unregister_driver(&megasas_pci_driver);
5513 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
5518 * megasas_exit - Driver unload entry point
5520 static void __exit megasas_exit(void)
5522 driver_remove_file(&megasas_pci_driver.driver,
5523 &driver_attr_dbg_lvl);
5524 driver_remove_file(&megasas_pci_driver.driver,
5525 &driver_attr_support_poll_for_event);
5526 driver_remove_file(&megasas_pci_driver.driver,
5527 &driver_attr_support_device_change);
5528 driver_remove_file(&megasas_pci_driver.driver,
5529 &driver_attr_release_date);
5530 driver_remove_file(&megasas_pci_driver.driver, &driver_attr_version);
5532 pci_unregister_driver(&megasas_pci_driver);
5533 unregister_chrdev(megasas_mgmt_majorno, "megaraid_sas_ioctl");
5536 module_init(megasas_init);
5537 module_exit(megasas_exit);