2 * Linux MegaRAID driver for SAS based RAID controllers
4 * Copyright (c) 2009-2011 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 : v00.00.06.18-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 int throttlequeuedepth
= MEGASAS_THROTTLE_QUEUE_DEPTH
;
75 module_param(throttlequeuedepth
, int, S_IRUGO
);
76 MODULE_PARM_DESC(throttlequeuedepth
,
77 "Adapter queue depth when throttled due to I/O timeout. Default: 16");
79 int resetwaittime
= MEGASAS_RESET_WAIT_TIME
;
80 module_param(resetwaittime
, int, S_IRUGO
);
81 MODULE_PARM_DESC(resetwaittime
, "Wait time in seconds after I/O timeout "
82 "before resetting adapter. Default: 180");
84 MODULE_LICENSE("GPL");
85 MODULE_VERSION(MEGASAS_VERSION
);
86 MODULE_AUTHOR("megaraidlinux@lsi.com");
87 MODULE_DESCRIPTION("LSI MegaRAID SAS Driver");
89 int megasas_transition_to_ready(struct megasas_instance
*instance
, int ocr
);
90 static int megasas_get_pd_list(struct megasas_instance
*instance
);
91 static int megasas_issue_init_mfi(struct megasas_instance
*instance
);
92 static int megasas_register_aen(struct megasas_instance
*instance
,
93 u32 seq_num
, u32 class_locale_word
);
95 * PCI ID table for all supported controllers
97 static struct pci_device_id megasas_pci_table
[] = {
99 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_LSI_SAS1064R
)},
101 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_LSI_SAS1078R
)},
103 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_LSI_SAS1078DE
)},
105 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_LSI_SAS1078GEN2
)},
107 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_LSI_SAS0079GEN2
)},
109 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_LSI_SAS0073SKINNY
)},
111 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_LSI_SAS0071SKINNY
)},
113 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_LSI_VERDE_ZCR
)},
114 /* xscale IOP, vega */
115 {PCI_DEVICE(PCI_VENDOR_ID_DELL
, PCI_DEVICE_ID_DELL_PERC5
)},
117 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_LSI_FUSION
)},
119 {PCI_DEVICE(PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_LSI_INVADER
)},
124 MODULE_DEVICE_TABLE(pci
, megasas_pci_table
);
126 static int megasas_mgmt_majorno
;
127 static struct megasas_mgmt_info megasas_mgmt_info
;
128 static struct fasync_struct
*megasas_async_queue
;
129 static DEFINE_MUTEX(megasas_async_queue_mutex
);
131 static int megasas_poll_wait_aen
;
132 static DECLARE_WAIT_QUEUE_HEAD(megasas_poll_wait
);
133 static u32 support_poll_for_event
;
135 static u32 support_device_change
;
137 /* define lock for aen poll */
138 spinlock_t poll_aen_lock
;
141 megasas_complete_cmd(struct megasas_instance
*instance
, struct megasas_cmd
*cmd
,
144 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem
*regs
);
146 megasas_adp_reset_gen2(struct megasas_instance
*instance
,
147 struct megasas_register_set __iomem
*reg_set
);
148 static irqreturn_t
megasas_isr(int irq
, void *devp
);
150 megasas_init_adapter_mfi(struct megasas_instance
*instance
);
152 megasas_build_and_issue_cmd(struct megasas_instance
*instance
,
153 struct scsi_cmnd
*scmd
);
154 static void megasas_complete_cmd_dpc(unsigned long instance_addr
);
156 megasas_release_fusion(struct megasas_instance
*instance
);
158 megasas_ioc_init_fusion(struct megasas_instance
*instance
);
160 megasas_free_cmds_fusion(struct megasas_instance
*instance
);
162 megasas_get_map_info(struct megasas_instance
*instance
);
164 megasas_sync_map_info(struct megasas_instance
*instance
);
166 wait_and_poll(struct megasas_instance
*instance
, struct megasas_cmd
*cmd
);
167 void megasas_reset_reply_desc(struct megasas_instance
*instance
);
168 u8
MR_ValidateMapInfo(struct MR_FW_RAID_MAP_ALL
*map
,
169 struct LD_LOAD_BALANCE_INFO
*lbInfo
);
170 int megasas_reset_fusion(struct Scsi_Host
*shost
);
171 void megasas_fusion_ocr_wq(struct work_struct
*work
);
174 megasas_issue_dcmd(struct megasas_instance
*instance
, struct megasas_cmd
*cmd
)
176 instance
->instancet
->fire_cmd(instance
,
177 cmd
->frame_phys_addr
, 0, instance
->reg_set
);
181 * megasas_get_cmd - Get a command from the free pool
182 * @instance: Adapter soft state
184 * Returns a free command from the pool
186 struct megasas_cmd
*megasas_get_cmd(struct megasas_instance
190 struct megasas_cmd
*cmd
= NULL
;
192 spin_lock_irqsave(&instance
->cmd_pool_lock
, flags
);
194 if (!list_empty(&instance
->cmd_pool
)) {
195 cmd
= list_entry((&instance
->cmd_pool
)->next
,
196 struct megasas_cmd
, list
);
197 list_del_init(&cmd
->list
);
199 printk(KERN_ERR
"megasas: Command pool empty!\n");
202 spin_unlock_irqrestore(&instance
->cmd_pool_lock
, flags
);
207 * megasas_return_cmd - Return a cmd to free command pool
208 * @instance: Adapter soft state
209 * @cmd: Command packet to be returned to free command pool
212 megasas_return_cmd(struct megasas_instance
*instance
, struct megasas_cmd
*cmd
)
216 spin_lock_irqsave(&instance
->cmd_pool_lock
, flags
);
219 cmd
->frame_count
= 0;
220 if ((instance
->pdev
->device
!= PCI_DEVICE_ID_LSI_FUSION
) &&
221 (instance
->pdev
->device
!= PCI_DEVICE_ID_LSI_INVADER
) &&
223 cmd
->frame
->hdr
.cmd
= MFI_CMD_INVALID
;
224 list_add_tail(&cmd
->list
, &instance
->cmd_pool
);
226 spin_unlock_irqrestore(&instance
->cmd_pool_lock
, flags
);
231 * The following functions are defined for xscale
232 * (deviceid : 1064R, PERC5) controllers
236 * megasas_enable_intr_xscale - Enables interrupts
237 * @regs: MFI register set
240 megasas_enable_intr_xscale(struct megasas_register_set __iomem
* regs
)
242 writel(0, &(regs
)->outbound_intr_mask
);
244 /* Dummy readl to force pci flush */
245 readl(®s
->outbound_intr_mask
);
249 * megasas_disable_intr_xscale -Disables interrupt
250 * @regs: MFI register set
253 megasas_disable_intr_xscale(struct megasas_register_set __iomem
* regs
)
256 writel(mask
, ®s
->outbound_intr_mask
);
257 /* Dummy readl to force pci flush */
258 readl(®s
->outbound_intr_mask
);
262 * megasas_read_fw_status_reg_xscale - returns the current FW status value
263 * @regs: MFI register set
266 megasas_read_fw_status_reg_xscale(struct megasas_register_set __iomem
* regs
)
268 return readl(&(regs
)->outbound_msg_0
);
271 * megasas_clear_interrupt_xscale - Check & clear interrupt
272 * @regs: MFI register set
275 megasas_clear_intr_xscale(struct megasas_register_set __iomem
* regs
)
280 * Check if it is our interrupt
282 status
= readl(®s
->outbound_intr_status
);
284 if (status
& MFI_OB_INTR_STATUS_MASK
)
285 mfiStatus
= MFI_INTR_FLAG_REPLY_MESSAGE
;
286 if (status
& MFI_XSCALE_OMR0_CHANGE_INTERRUPT
)
287 mfiStatus
|= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE
;
290 * Clear the interrupt by writing back the same value
293 writel(status
, ®s
->outbound_intr_status
);
295 /* Dummy readl to force pci flush */
296 readl(®s
->outbound_intr_status
);
302 * megasas_fire_cmd_xscale - Sends command to the FW
303 * @frame_phys_addr : Physical address of cmd
304 * @frame_count : Number of frames for the command
305 * @regs : MFI register set
308 megasas_fire_cmd_xscale(struct megasas_instance
*instance
,
309 dma_addr_t frame_phys_addr
,
311 struct megasas_register_set __iomem
*regs
)
314 spin_lock_irqsave(&instance
->hba_lock
, flags
);
315 writel((frame_phys_addr
>> 3)|(frame_count
),
316 &(regs
)->inbound_queue_port
);
317 spin_unlock_irqrestore(&instance
->hba_lock
, flags
);
321 * megasas_adp_reset_xscale - For controller reset
322 * @regs: MFI register set
325 megasas_adp_reset_xscale(struct megasas_instance
*instance
,
326 struct megasas_register_set __iomem
*regs
)
330 writel(MFI_ADP_RESET
, ®s
->inbound_doorbell
);
332 for (i
= 0; i
< 3; i
++)
333 msleep(1000); /* sleep for 3 secs */
335 pci_read_config_dword(instance
->pdev
, MFI_1068_PCSR_OFFSET
, &pcidata
);
336 printk(KERN_NOTICE
"pcidata = %x\n", pcidata
);
338 printk(KERN_NOTICE
"mfi 1068 offset read=%x\n", pcidata
);
340 pci_write_config_dword(instance
->pdev
,
341 MFI_1068_PCSR_OFFSET
, pcidata
);
343 for (i
= 0; i
< 2; i
++)
344 msleep(1000); /* need to wait 2 secs again */
347 pci_read_config_dword(instance
->pdev
,
348 MFI_1068_FW_HANDSHAKE_OFFSET
, &pcidata
);
349 printk(KERN_NOTICE
"1068 offset handshake read=%x\n", pcidata
);
350 if ((pcidata
& 0xffff0000) == MFI_1068_FW_READY
) {
351 printk(KERN_NOTICE
"1068 offset pcidt=%x\n", pcidata
);
353 pci_write_config_dword(instance
->pdev
,
354 MFI_1068_FW_HANDSHAKE_OFFSET
, pcidata
);
361 * megasas_check_reset_xscale - For controller reset check
362 * @regs: MFI register set
365 megasas_check_reset_xscale(struct megasas_instance
*instance
,
366 struct megasas_register_set __iomem
*regs
)
369 consumer
= *instance
->consumer
;
371 if ((instance
->adprecovery
!= MEGASAS_HBA_OPERATIONAL
) &&
372 (*instance
->consumer
== MEGASAS_ADPRESET_INPROG_SIGN
)) {
378 static struct megasas_instance_template megasas_instance_template_xscale
= {
380 .fire_cmd
= megasas_fire_cmd_xscale
,
381 .enable_intr
= megasas_enable_intr_xscale
,
382 .disable_intr
= megasas_disable_intr_xscale
,
383 .clear_intr
= megasas_clear_intr_xscale
,
384 .read_fw_status_reg
= megasas_read_fw_status_reg_xscale
,
385 .adp_reset
= megasas_adp_reset_xscale
,
386 .check_reset
= megasas_check_reset_xscale
,
387 .service_isr
= megasas_isr
,
388 .tasklet
= megasas_complete_cmd_dpc
,
389 .init_adapter
= megasas_init_adapter_mfi
,
390 .build_and_issue_cmd
= megasas_build_and_issue_cmd
,
391 .issue_dcmd
= megasas_issue_dcmd
,
395 * This is the end of set of functions & definitions specific
396 * to xscale (deviceid : 1064R, PERC5) controllers
400 * The following functions are defined for ppc (deviceid : 0x60)
405 * megasas_enable_intr_ppc - Enables interrupts
406 * @regs: MFI register set
409 megasas_enable_intr_ppc(struct megasas_register_set __iomem
* regs
)
411 writel(0xFFFFFFFF, &(regs
)->outbound_doorbell_clear
);
413 writel(~0x80000000, &(regs
)->outbound_intr_mask
);
415 /* Dummy readl to force pci flush */
416 readl(®s
->outbound_intr_mask
);
420 * megasas_disable_intr_ppc - Disable interrupt
421 * @regs: MFI register set
424 megasas_disable_intr_ppc(struct megasas_register_set __iomem
* regs
)
426 u32 mask
= 0xFFFFFFFF;
427 writel(mask
, ®s
->outbound_intr_mask
);
428 /* Dummy readl to force pci flush */
429 readl(®s
->outbound_intr_mask
);
433 * megasas_read_fw_status_reg_ppc - returns the current FW status value
434 * @regs: MFI register set
437 megasas_read_fw_status_reg_ppc(struct megasas_register_set __iomem
* regs
)
439 return readl(&(regs
)->outbound_scratch_pad
);
443 * megasas_clear_interrupt_ppc - Check & clear interrupt
444 * @regs: MFI register set
447 megasas_clear_intr_ppc(struct megasas_register_set __iomem
* regs
)
449 u32 status
, mfiStatus
= 0;
452 * Check if it is our interrupt
454 status
= readl(®s
->outbound_intr_status
);
456 if (status
& MFI_REPLY_1078_MESSAGE_INTERRUPT
)
457 mfiStatus
= MFI_INTR_FLAG_REPLY_MESSAGE
;
459 if (status
& MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT
)
460 mfiStatus
|= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE
;
463 * Clear the interrupt by writing back the same value
465 writel(status
, ®s
->outbound_doorbell_clear
);
467 /* Dummy readl to force pci flush */
468 readl(®s
->outbound_doorbell_clear
);
474 * megasas_fire_cmd_ppc - Sends command to the FW
475 * @frame_phys_addr : Physical address of cmd
476 * @frame_count : Number of frames for the command
477 * @regs : MFI register set
480 megasas_fire_cmd_ppc(struct megasas_instance
*instance
,
481 dma_addr_t frame_phys_addr
,
483 struct megasas_register_set __iomem
*regs
)
486 spin_lock_irqsave(&instance
->hba_lock
, flags
);
487 writel((frame_phys_addr
| (frame_count
<<1))|1,
488 &(regs
)->inbound_queue_port
);
489 spin_unlock_irqrestore(&instance
->hba_lock
, flags
);
493 * megasas_check_reset_ppc - For controller reset check
494 * @regs: MFI register set
497 megasas_check_reset_ppc(struct megasas_instance
*instance
,
498 struct megasas_register_set __iomem
*regs
)
500 if (instance
->adprecovery
!= MEGASAS_HBA_OPERATIONAL
)
506 static struct megasas_instance_template megasas_instance_template_ppc
= {
508 .fire_cmd
= megasas_fire_cmd_ppc
,
509 .enable_intr
= megasas_enable_intr_ppc
,
510 .disable_intr
= megasas_disable_intr_ppc
,
511 .clear_intr
= megasas_clear_intr_ppc
,
512 .read_fw_status_reg
= megasas_read_fw_status_reg_ppc
,
513 .adp_reset
= megasas_adp_reset_xscale
,
514 .check_reset
= megasas_check_reset_ppc
,
515 .service_isr
= megasas_isr
,
516 .tasklet
= megasas_complete_cmd_dpc
,
517 .init_adapter
= megasas_init_adapter_mfi
,
518 .build_and_issue_cmd
= megasas_build_and_issue_cmd
,
519 .issue_dcmd
= megasas_issue_dcmd
,
523 * megasas_enable_intr_skinny - Enables interrupts
524 * @regs: MFI register set
527 megasas_enable_intr_skinny(struct megasas_register_set __iomem
*regs
)
529 writel(0xFFFFFFFF, &(regs
)->outbound_intr_mask
);
531 writel(~MFI_SKINNY_ENABLE_INTERRUPT_MASK
, &(regs
)->outbound_intr_mask
);
533 /* Dummy readl to force pci flush */
534 readl(®s
->outbound_intr_mask
);
538 * megasas_disable_intr_skinny - Disables interrupt
539 * @regs: MFI register set
542 megasas_disable_intr_skinny(struct megasas_register_set __iomem
*regs
)
544 u32 mask
= 0xFFFFFFFF;
545 writel(mask
, ®s
->outbound_intr_mask
);
546 /* Dummy readl to force pci flush */
547 readl(®s
->outbound_intr_mask
);
551 * megasas_read_fw_status_reg_skinny - returns the current FW status value
552 * @regs: MFI register set
555 megasas_read_fw_status_reg_skinny(struct megasas_register_set __iomem
*regs
)
557 return readl(&(regs
)->outbound_scratch_pad
);
561 * megasas_clear_interrupt_skinny - Check & clear interrupt
562 * @regs: MFI register set
565 megasas_clear_intr_skinny(struct megasas_register_set __iomem
*regs
)
571 * Check if it is our interrupt
573 status
= readl(®s
->outbound_intr_status
);
575 if (!(status
& MFI_SKINNY_ENABLE_INTERRUPT_MASK
)) {
580 * Check if it is our interrupt
582 if ((megasas_read_fw_status_reg_gen2(regs
) & MFI_STATE_MASK
) ==
584 mfiStatus
= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE
;
586 mfiStatus
= MFI_INTR_FLAG_REPLY_MESSAGE
;
589 * Clear the interrupt by writing back the same value
591 writel(status
, ®s
->outbound_intr_status
);
594 * dummy read to flush PCI
596 readl(®s
->outbound_intr_status
);
602 * megasas_fire_cmd_skinny - Sends command to the FW
603 * @frame_phys_addr : Physical address of cmd
604 * @frame_count : Number of frames for the command
605 * @regs : MFI register set
608 megasas_fire_cmd_skinny(struct megasas_instance
*instance
,
609 dma_addr_t frame_phys_addr
,
611 struct megasas_register_set __iomem
*regs
)
614 spin_lock_irqsave(&instance
->hba_lock
, flags
);
615 writel(0, &(regs
)->inbound_high_queue_port
);
616 writel((frame_phys_addr
| (frame_count
<<1))|1,
617 &(regs
)->inbound_low_queue_port
);
618 spin_unlock_irqrestore(&instance
->hba_lock
, flags
);
622 * megasas_check_reset_skinny - For controller reset check
623 * @regs: MFI register set
626 megasas_check_reset_skinny(struct megasas_instance
*instance
,
627 struct megasas_register_set __iomem
*regs
)
629 if (instance
->adprecovery
!= MEGASAS_HBA_OPERATIONAL
)
635 static struct megasas_instance_template megasas_instance_template_skinny
= {
637 .fire_cmd
= megasas_fire_cmd_skinny
,
638 .enable_intr
= megasas_enable_intr_skinny
,
639 .disable_intr
= megasas_disable_intr_skinny
,
640 .clear_intr
= megasas_clear_intr_skinny
,
641 .read_fw_status_reg
= megasas_read_fw_status_reg_skinny
,
642 .adp_reset
= megasas_adp_reset_gen2
,
643 .check_reset
= megasas_check_reset_skinny
,
644 .service_isr
= megasas_isr
,
645 .tasklet
= megasas_complete_cmd_dpc
,
646 .init_adapter
= megasas_init_adapter_mfi
,
647 .build_and_issue_cmd
= megasas_build_and_issue_cmd
,
648 .issue_dcmd
= megasas_issue_dcmd
,
653 * The following functions are defined for gen2 (deviceid : 0x78 0x79)
658 * megasas_enable_intr_gen2 - Enables interrupts
659 * @regs: MFI register set
662 megasas_enable_intr_gen2(struct megasas_register_set __iomem
*regs
)
664 writel(0xFFFFFFFF, &(regs
)->outbound_doorbell_clear
);
666 /* write ~0x00000005 (4 & 1) to the intr mask*/
667 writel(~MFI_GEN2_ENABLE_INTERRUPT_MASK
, &(regs
)->outbound_intr_mask
);
669 /* Dummy readl to force pci flush */
670 readl(®s
->outbound_intr_mask
);
674 * megasas_disable_intr_gen2 - Disables interrupt
675 * @regs: MFI register set
678 megasas_disable_intr_gen2(struct megasas_register_set __iomem
*regs
)
680 u32 mask
= 0xFFFFFFFF;
681 writel(mask
, ®s
->outbound_intr_mask
);
682 /* Dummy readl to force pci flush */
683 readl(®s
->outbound_intr_mask
);
687 * megasas_read_fw_status_reg_gen2 - returns the current FW status value
688 * @regs: MFI register set
691 megasas_read_fw_status_reg_gen2(struct megasas_register_set __iomem
*regs
)
693 return readl(&(regs
)->outbound_scratch_pad
);
697 * megasas_clear_interrupt_gen2 - Check & clear interrupt
698 * @regs: MFI register set
701 megasas_clear_intr_gen2(struct megasas_register_set __iomem
*regs
)
706 * Check if it is our interrupt
708 status
= readl(®s
->outbound_intr_status
);
710 if (status
& MFI_GEN2_ENABLE_INTERRUPT_MASK
) {
711 mfiStatus
= MFI_INTR_FLAG_REPLY_MESSAGE
;
713 if (status
& MFI_G2_OUTBOUND_DOORBELL_CHANGE_INTERRUPT
) {
714 mfiStatus
|= MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE
;
718 * Clear the interrupt by writing back the same value
721 writel(status
, ®s
->outbound_doorbell_clear
);
723 /* Dummy readl to force pci flush */
724 readl(®s
->outbound_intr_status
);
729 * megasas_fire_cmd_gen2 - Sends command to the FW
730 * @frame_phys_addr : Physical address of cmd
731 * @frame_count : Number of frames for the command
732 * @regs : MFI register set
735 megasas_fire_cmd_gen2(struct megasas_instance
*instance
,
736 dma_addr_t frame_phys_addr
,
738 struct megasas_register_set __iomem
*regs
)
741 spin_lock_irqsave(&instance
->hba_lock
, flags
);
742 writel((frame_phys_addr
| (frame_count
<<1))|1,
743 &(regs
)->inbound_queue_port
);
744 spin_unlock_irqrestore(&instance
->hba_lock
, flags
);
748 * megasas_adp_reset_gen2 - For controller reset
749 * @regs: MFI register set
752 megasas_adp_reset_gen2(struct megasas_instance
*instance
,
753 struct megasas_register_set __iomem
*reg_set
)
757 u32
*seq_offset
= ®_set
->seq_offset
;
758 u32
*hostdiag_offset
= ®_set
->host_diag
;
760 if (instance
->instancet
== &megasas_instance_template_skinny
) {
761 seq_offset
= ®_set
->fusion_seq_offset
;
762 hostdiag_offset
= ®_set
->fusion_host_diag
;
765 writel(0, seq_offset
);
766 writel(4, seq_offset
);
767 writel(0xb, seq_offset
);
768 writel(2, seq_offset
);
769 writel(7, seq_offset
);
770 writel(0xd, seq_offset
);
774 HostDiag
= (u32
)readl(hostdiag_offset
);
776 while ( !( HostDiag
& DIAG_WRITE_ENABLE
) ) {
778 HostDiag
= (u32
)readl(hostdiag_offset
);
779 printk(KERN_NOTICE
"RESETGEN2: retry=%x, hostdiag=%x\n",
787 printk(KERN_NOTICE
"ADP_RESET_GEN2: HostDiag=%x\n", HostDiag
);
789 writel((HostDiag
| DIAG_RESET_ADAPTER
), hostdiag_offset
);
793 HostDiag
= (u32
)readl(hostdiag_offset
);
794 while ( ( HostDiag
& DIAG_RESET_ADAPTER
) ) {
796 HostDiag
= (u32
)readl(hostdiag_offset
);
797 printk(KERN_NOTICE
"RESET_GEN2: retry=%x, hostdiag=%x\n",
808 * megasas_check_reset_gen2 - For controller reset check
809 * @regs: MFI register set
812 megasas_check_reset_gen2(struct megasas_instance
*instance
,
813 struct megasas_register_set __iomem
*regs
)
815 if (instance
->adprecovery
!= MEGASAS_HBA_OPERATIONAL
) {
822 static struct megasas_instance_template megasas_instance_template_gen2
= {
824 .fire_cmd
= megasas_fire_cmd_gen2
,
825 .enable_intr
= megasas_enable_intr_gen2
,
826 .disable_intr
= megasas_disable_intr_gen2
,
827 .clear_intr
= megasas_clear_intr_gen2
,
828 .read_fw_status_reg
= megasas_read_fw_status_reg_gen2
,
829 .adp_reset
= megasas_adp_reset_gen2
,
830 .check_reset
= megasas_check_reset_gen2
,
831 .service_isr
= megasas_isr
,
832 .tasklet
= megasas_complete_cmd_dpc
,
833 .init_adapter
= megasas_init_adapter_mfi
,
834 .build_and_issue_cmd
= megasas_build_and_issue_cmd
,
835 .issue_dcmd
= megasas_issue_dcmd
,
839 * This is the end of set of functions & definitions
840 * specific to gen2 (deviceid : 0x78, 0x79) controllers
844 * Template added for TB (Fusion)
846 extern struct megasas_instance_template megasas_instance_template_fusion
;
849 * megasas_issue_polled - Issues a polling command
850 * @instance: Adapter soft state
851 * @cmd: Command packet to be issued
853 * For polling, MFI requires the cmd_status to be set to 0xFF before posting.
856 megasas_issue_polled(struct megasas_instance
*instance
, struct megasas_cmd
*cmd
)
859 struct megasas_header
*frame_hdr
= &cmd
->frame
->hdr
;
861 frame_hdr
->cmd_status
= 0xFF;
862 frame_hdr
->flags
|= MFI_FRAME_DONT_POST_IN_REPLY_QUEUE
;
865 * Issue the frame using inbound queue port
867 instance
->instancet
->issue_dcmd(instance
, cmd
);
870 * Wait for cmd_status to change
872 return wait_and_poll(instance
, cmd
);
876 * megasas_issue_blocked_cmd - Synchronous wrapper around regular FW cmds
877 * @instance: Adapter soft state
878 * @cmd: Command to be issued
880 * This function waits on an event for the command to be returned from ISR.
881 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
882 * Used to issue ioctl commands.
885 megasas_issue_blocked_cmd(struct megasas_instance
*instance
,
886 struct megasas_cmd
*cmd
)
888 cmd
->cmd_status
= ENODATA
;
890 instance
->instancet
->issue_dcmd(instance
, cmd
);
892 wait_event(instance
->int_cmd_wait_q
, cmd
->cmd_status
!= ENODATA
);
898 * megasas_issue_blocked_abort_cmd - Aborts previously issued cmd
899 * @instance: Adapter soft state
900 * @cmd_to_abort: Previously issued cmd to be aborted
902 * MFI firmware can abort previously issued AEN command (automatic event
903 * notification). The megasas_issue_blocked_abort_cmd() issues such abort
904 * cmd and waits for return status.
905 * Max wait time is MEGASAS_INTERNAL_CMD_WAIT_TIME secs
908 megasas_issue_blocked_abort_cmd(struct megasas_instance
*instance
,
909 struct megasas_cmd
*cmd_to_abort
)
911 struct megasas_cmd
*cmd
;
912 struct megasas_abort_frame
*abort_fr
;
914 cmd
= megasas_get_cmd(instance
);
919 abort_fr
= &cmd
->frame
->abort
;
922 * Prepare and issue the abort frame
924 abort_fr
->cmd
= MFI_CMD_ABORT
;
925 abort_fr
->cmd_status
= 0xFF;
927 abort_fr
->abort_context
= cmd_to_abort
->index
;
928 abort_fr
->abort_mfi_phys_addr_lo
= cmd_to_abort
->frame_phys_addr
;
929 abort_fr
->abort_mfi_phys_addr_hi
= 0;
932 cmd
->cmd_status
= 0xFF;
934 instance
->instancet
->issue_dcmd(instance
, cmd
);
937 * Wait for this cmd to complete
939 wait_event(instance
->abort_cmd_wait_q
, cmd
->cmd_status
!= 0xFF);
942 megasas_return_cmd(instance
, cmd
);
947 * megasas_make_sgl32 - Prepares 32-bit SGL
948 * @instance: Adapter soft state
949 * @scp: SCSI command from the mid-layer
950 * @mfi_sgl: SGL to be filled in
952 * If successful, this function returns the number of SG elements. Otherwise,
956 megasas_make_sgl32(struct megasas_instance
*instance
, struct scsi_cmnd
*scp
,
957 union megasas_sgl
*mfi_sgl
)
961 struct scatterlist
*os_sgl
;
963 sge_count
= scsi_dma_map(scp
);
964 BUG_ON(sge_count
< 0);
967 scsi_for_each_sg(scp
, os_sgl
, sge_count
, i
) {
968 mfi_sgl
->sge32
[i
].length
= sg_dma_len(os_sgl
);
969 mfi_sgl
->sge32
[i
].phys_addr
= sg_dma_address(os_sgl
);
976 * megasas_make_sgl64 - Prepares 64-bit SGL
977 * @instance: Adapter soft state
978 * @scp: SCSI command from the mid-layer
979 * @mfi_sgl: SGL to be filled in
981 * If successful, this function returns the number of SG elements. Otherwise,
985 megasas_make_sgl64(struct megasas_instance
*instance
, struct scsi_cmnd
*scp
,
986 union megasas_sgl
*mfi_sgl
)
990 struct scatterlist
*os_sgl
;
992 sge_count
= scsi_dma_map(scp
);
993 BUG_ON(sge_count
< 0);
996 scsi_for_each_sg(scp
, os_sgl
, sge_count
, i
) {
997 mfi_sgl
->sge64
[i
].length
= sg_dma_len(os_sgl
);
998 mfi_sgl
->sge64
[i
].phys_addr
= sg_dma_address(os_sgl
);
1005 * megasas_make_sgl_skinny - Prepares IEEE SGL
1006 * @instance: Adapter soft state
1007 * @scp: SCSI command from the mid-layer
1008 * @mfi_sgl: SGL to be filled in
1010 * If successful, this function returns the number of SG elements. Otherwise,
1014 megasas_make_sgl_skinny(struct megasas_instance
*instance
,
1015 struct scsi_cmnd
*scp
, union megasas_sgl
*mfi_sgl
)
1019 struct scatterlist
*os_sgl
;
1021 sge_count
= scsi_dma_map(scp
);
1024 scsi_for_each_sg(scp
, os_sgl
, sge_count
, i
) {
1025 mfi_sgl
->sge_skinny
[i
].length
= sg_dma_len(os_sgl
);
1026 mfi_sgl
->sge_skinny
[i
].phys_addr
=
1027 sg_dma_address(os_sgl
);
1028 mfi_sgl
->sge_skinny
[i
].flag
= 0;
1035 * megasas_get_frame_count - Computes the number of frames
1036 * @frame_type : type of frame- io or pthru frame
1037 * @sge_count : number of sg elements
1039 * Returns the number of frames required for numnber of sge's (sge_count)
1042 static u32
megasas_get_frame_count(struct megasas_instance
*instance
,
1043 u8 sge_count
, u8 frame_type
)
1050 sge_sz
= (IS_DMA64
) ? sizeof(struct megasas_sge64
) :
1051 sizeof(struct megasas_sge32
);
1053 if (instance
->flag_ieee
) {
1054 sge_sz
= sizeof(struct megasas_sge_skinny
);
1058 * Main frame can contain 2 SGEs for 64-bit SGLs and
1059 * 3 SGEs for 32-bit SGLs for ldio &
1060 * 1 SGEs for 64-bit SGLs and
1061 * 2 SGEs for 32-bit SGLs for pthru frame
1063 if (unlikely(frame_type
== PTHRU_FRAME
)) {
1064 if (instance
->flag_ieee
== 1) {
1065 num_cnt
= sge_count
- 1;
1066 } else if (IS_DMA64
)
1067 num_cnt
= sge_count
- 1;
1069 num_cnt
= sge_count
- 2;
1071 if (instance
->flag_ieee
== 1) {
1072 num_cnt
= sge_count
- 1;
1073 } else if (IS_DMA64
)
1074 num_cnt
= sge_count
- 2;
1076 num_cnt
= sge_count
- 3;
1080 sge_bytes
= sge_sz
* num_cnt
;
1082 frame_count
= (sge_bytes
/ MEGAMFI_FRAME_SIZE
) +
1083 ((sge_bytes
% MEGAMFI_FRAME_SIZE
) ? 1 : 0) ;
1088 if (frame_count
> 7)
1094 * megasas_build_dcdb - Prepares a direct cdb (DCDB) command
1095 * @instance: Adapter soft state
1096 * @scp: SCSI command
1097 * @cmd: Command to be prepared in
1099 * This function prepares CDB commands. These are typcially pass-through
1100 * commands to the devices.
1103 megasas_build_dcdb(struct megasas_instance
*instance
, struct scsi_cmnd
*scp
,
1104 struct megasas_cmd
*cmd
)
1109 struct megasas_pthru_frame
*pthru
;
1111 is_logical
= MEGASAS_IS_LOGICAL(scp
);
1112 device_id
= MEGASAS_DEV_INDEX(instance
, scp
);
1113 pthru
= (struct megasas_pthru_frame
*)cmd
->frame
;
1115 if (scp
->sc_data_direction
== PCI_DMA_TODEVICE
)
1116 flags
= MFI_FRAME_DIR_WRITE
;
1117 else if (scp
->sc_data_direction
== PCI_DMA_FROMDEVICE
)
1118 flags
= MFI_FRAME_DIR_READ
;
1119 else if (scp
->sc_data_direction
== PCI_DMA_NONE
)
1120 flags
= MFI_FRAME_DIR_NONE
;
1122 if (instance
->flag_ieee
== 1) {
1123 flags
|= MFI_FRAME_IEEE
;
1127 * Prepare the DCDB frame
1129 pthru
->cmd
= (is_logical
) ? MFI_CMD_LD_SCSI_IO
: MFI_CMD_PD_SCSI_IO
;
1130 pthru
->cmd_status
= 0x0;
1131 pthru
->scsi_status
= 0x0;
1132 pthru
->target_id
= device_id
;
1133 pthru
->lun
= scp
->device
->lun
;
1134 pthru
->cdb_len
= scp
->cmd_len
;
1137 pthru
->flags
= flags
;
1138 pthru
->data_xfer_len
= scsi_bufflen(scp
);
1140 memcpy(pthru
->cdb
, scp
->cmnd
, scp
->cmd_len
);
1143 * If the command is for the tape device, set the
1144 * pthru timeout to the os layer timeout value.
1146 if (scp
->device
->type
== TYPE_TAPE
) {
1147 if ((scp
->request
->timeout
/ HZ
) > 0xFFFF)
1148 pthru
->timeout
= 0xFFFF;
1150 pthru
->timeout
= scp
->request
->timeout
/ HZ
;
1156 if (instance
->flag_ieee
== 1) {
1157 pthru
->flags
|= MFI_FRAME_SGL64
;
1158 pthru
->sge_count
= megasas_make_sgl_skinny(instance
, scp
,
1160 } else if (IS_DMA64
) {
1161 pthru
->flags
|= MFI_FRAME_SGL64
;
1162 pthru
->sge_count
= megasas_make_sgl64(instance
, scp
,
1165 pthru
->sge_count
= megasas_make_sgl32(instance
, scp
,
1168 if (pthru
->sge_count
> instance
->max_num_sge
) {
1169 printk(KERN_ERR
"megasas: DCDB two many SGE NUM=%x\n",
1175 * Sense info specific
1177 pthru
->sense_len
= SCSI_SENSE_BUFFERSIZE
;
1178 pthru
->sense_buf_phys_addr_hi
= 0;
1179 pthru
->sense_buf_phys_addr_lo
= cmd
->sense_phys_addr
;
1182 * Compute the total number of frames this command consumes. FW uses
1183 * this number to pull sufficient number of frames from host memory.
1185 cmd
->frame_count
= megasas_get_frame_count(instance
, pthru
->sge_count
,
1188 return cmd
->frame_count
;
1192 * megasas_build_ldio - Prepares IOs to logical devices
1193 * @instance: Adapter soft state
1194 * @scp: SCSI command
1195 * @cmd: Command to be prepared
1197 * Frames (and accompanying SGLs) for regular SCSI IOs use this function.
1200 megasas_build_ldio(struct megasas_instance
*instance
, struct scsi_cmnd
*scp
,
1201 struct megasas_cmd
*cmd
)
1204 u8 sc
= scp
->cmnd
[0];
1206 struct megasas_io_frame
*ldio
;
1208 device_id
= MEGASAS_DEV_INDEX(instance
, scp
);
1209 ldio
= (struct megasas_io_frame
*)cmd
->frame
;
1211 if (scp
->sc_data_direction
== PCI_DMA_TODEVICE
)
1212 flags
= MFI_FRAME_DIR_WRITE
;
1213 else if (scp
->sc_data_direction
== PCI_DMA_FROMDEVICE
)
1214 flags
= MFI_FRAME_DIR_READ
;
1216 if (instance
->flag_ieee
== 1) {
1217 flags
|= MFI_FRAME_IEEE
;
1221 * Prepare the Logical IO frame: 2nd bit is zero for all read cmds
1223 ldio
->cmd
= (sc
& 0x02) ? MFI_CMD_LD_WRITE
: MFI_CMD_LD_READ
;
1224 ldio
->cmd_status
= 0x0;
1225 ldio
->scsi_status
= 0x0;
1226 ldio
->target_id
= device_id
;
1228 ldio
->reserved_0
= 0;
1230 ldio
->flags
= flags
;
1231 ldio
->start_lba_hi
= 0;
1232 ldio
->access_byte
= (scp
->cmd_len
!= 6) ? scp
->cmnd
[1] : 0;
1235 * 6-byte READ(0x08) or WRITE(0x0A) cdb
1237 if (scp
->cmd_len
== 6) {
1238 ldio
->lba_count
= (u32
) scp
->cmnd
[4];
1239 ldio
->start_lba_lo
= ((u32
) scp
->cmnd
[1] << 16) |
1240 ((u32
) scp
->cmnd
[2] << 8) | (u32
) scp
->cmnd
[3];
1242 ldio
->start_lba_lo
&= 0x1FFFFF;
1246 * 10-byte READ(0x28) or WRITE(0x2A) cdb
1248 else if (scp
->cmd_len
== 10) {
1249 ldio
->lba_count
= (u32
) scp
->cmnd
[8] |
1250 ((u32
) scp
->cmnd
[7] << 8);
1251 ldio
->start_lba_lo
= ((u32
) scp
->cmnd
[2] << 24) |
1252 ((u32
) scp
->cmnd
[3] << 16) |
1253 ((u32
) scp
->cmnd
[4] << 8) | (u32
) scp
->cmnd
[5];
1257 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
1259 else if (scp
->cmd_len
== 12) {
1260 ldio
->lba_count
= ((u32
) scp
->cmnd
[6] << 24) |
1261 ((u32
) scp
->cmnd
[7] << 16) |
1262 ((u32
) scp
->cmnd
[8] << 8) | (u32
) scp
->cmnd
[9];
1264 ldio
->start_lba_lo
= ((u32
) scp
->cmnd
[2] << 24) |
1265 ((u32
) scp
->cmnd
[3] << 16) |
1266 ((u32
) scp
->cmnd
[4] << 8) | (u32
) scp
->cmnd
[5];
1270 * 16-byte READ(0x88) or WRITE(0x8A) cdb
1272 else if (scp
->cmd_len
== 16) {
1273 ldio
->lba_count
= ((u32
) scp
->cmnd
[10] << 24) |
1274 ((u32
) scp
->cmnd
[11] << 16) |
1275 ((u32
) scp
->cmnd
[12] << 8) | (u32
) scp
->cmnd
[13];
1277 ldio
->start_lba_lo
= ((u32
) scp
->cmnd
[6] << 24) |
1278 ((u32
) scp
->cmnd
[7] << 16) |
1279 ((u32
) scp
->cmnd
[8] << 8) | (u32
) scp
->cmnd
[9];
1281 ldio
->start_lba_hi
= ((u32
) scp
->cmnd
[2] << 24) |
1282 ((u32
) scp
->cmnd
[3] << 16) |
1283 ((u32
) scp
->cmnd
[4] << 8) | (u32
) scp
->cmnd
[5];
1290 if (instance
->flag_ieee
) {
1291 ldio
->flags
|= MFI_FRAME_SGL64
;
1292 ldio
->sge_count
= megasas_make_sgl_skinny(instance
, scp
,
1294 } else if (IS_DMA64
) {
1295 ldio
->flags
|= MFI_FRAME_SGL64
;
1296 ldio
->sge_count
= megasas_make_sgl64(instance
, scp
, &ldio
->sgl
);
1298 ldio
->sge_count
= megasas_make_sgl32(instance
, scp
, &ldio
->sgl
);
1300 if (ldio
->sge_count
> instance
->max_num_sge
) {
1301 printk(KERN_ERR
"megasas: build_ld_io: sge_count = %x\n",
1307 * Sense info specific
1309 ldio
->sense_len
= SCSI_SENSE_BUFFERSIZE
;
1310 ldio
->sense_buf_phys_addr_hi
= 0;
1311 ldio
->sense_buf_phys_addr_lo
= cmd
->sense_phys_addr
;
1314 * Compute the total number of frames this command consumes. FW uses
1315 * this number to pull sufficient number of frames from host memory.
1317 cmd
->frame_count
= megasas_get_frame_count(instance
,
1318 ldio
->sge_count
, IO_FRAME
);
1320 return cmd
->frame_count
;
1324 * megasas_is_ldio - Checks if the cmd is for logical drive
1325 * @scmd: SCSI command
1327 * Called by megasas_queue_command to find out if the command to be queued
1328 * is a logical drive command
1330 inline int megasas_is_ldio(struct scsi_cmnd
*cmd
)
1332 if (!MEGASAS_IS_LOGICAL(cmd
))
1334 switch (cmd
->cmnd
[0]) {
1350 * megasas_dump_pending_frames - Dumps the frame address of all pending cmds
1352 * @instance: Adapter soft state
1355 megasas_dump_pending_frames(struct megasas_instance
*instance
)
1357 struct megasas_cmd
*cmd
;
1359 union megasas_sgl
*mfi_sgl
;
1360 struct megasas_io_frame
*ldio
;
1361 struct megasas_pthru_frame
*pthru
;
1363 u32 max_cmd
= instance
->max_fw_cmds
;
1365 printk(KERN_ERR
"\nmegasas[%d]: Dumping Frame Phys Address of all pending cmds in FW\n",instance
->host
->host_no
);
1366 printk(KERN_ERR
"megasas[%d]: Total OS Pending cmds : %d\n",instance
->host
->host_no
,atomic_read(&instance
->fw_outstanding
));
1368 printk(KERN_ERR
"\nmegasas[%d]: 64 bit SGLs were sent to FW\n",instance
->host
->host_no
);
1370 printk(KERN_ERR
"\nmegasas[%d]: 32 bit SGLs were sent to FW\n",instance
->host
->host_no
);
1372 printk(KERN_ERR
"megasas[%d]: Pending OS cmds in FW : \n",instance
->host
->host_no
);
1373 for (i
= 0; i
< max_cmd
; i
++) {
1374 cmd
= instance
->cmd_list
[i
];
1377 printk(KERN_ERR
"megasas[%d]: Frame addr :0x%08lx : ",instance
->host
->host_no
,(unsigned long)cmd
->frame_phys_addr
);
1378 if (megasas_is_ldio(cmd
->scmd
)){
1379 ldio
= (struct megasas_io_frame
*)cmd
->frame
;
1380 mfi_sgl
= &ldio
->sgl
;
1381 sgcount
= ldio
->sge_count
;
1382 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
);
1385 pthru
= (struct megasas_pthru_frame
*) cmd
->frame
;
1386 mfi_sgl
= &pthru
->sgl
;
1387 sgcount
= pthru
->sge_count
;
1388 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
);
1390 if(megasas_dbg_lvl
& MEGASAS_DBG_LVL
){
1391 for (n
= 0; n
< sgcount
; n
++){
1393 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
) ;
1395 printk(KERN_ERR
"megasas: sgl len : 0x%x, sgl addr : 0x%x ",mfi_sgl
->sge32
[n
].length
, mfi_sgl
->sge32
[n
].phys_addr
) ;
1398 printk(KERN_ERR
"\n");
1400 printk(KERN_ERR
"\nmegasas[%d]: Pending Internal cmds in FW : \n",instance
->host
->host_no
);
1401 for (i
= 0; i
< max_cmd
; i
++) {
1403 cmd
= instance
->cmd_list
[i
];
1405 if(cmd
->sync_cmd
== 1){
1406 printk(KERN_ERR
"0x%08lx : ", (unsigned long)cmd
->frame_phys_addr
);
1409 printk(KERN_ERR
"megasas[%d]: Dumping Done.\n\n",instance
->host
->host_no
);
1413 megasas_build_and_issue_cmd(struct megasas_instance
*instance
,
1414 struct scsi_cmnd
*scmd
)
1416 struct megasas_cmd
*cmd
;
1419 cmd
= megasas_get_cmd(instance
);
1421 return SCSI_MLQUEUE_HOST_BUSY
;
1424 * Logical drive command
1426 if (megasas_is_ldio(scmd
))
1427 frame_count
= megasas_build_ldio(instance
, scmd
, cmd
);
1429 frame_count
= megasas_build_dcdb(instance
, scmd
, cmd
);
1432 goto out_return_cmd
;
1435 scmd
->SCp
.ptr
= (char *)cmd
;
1438 * Issue the command to the FW
1440 atomic_inc(&instance
->fw_outstanding
);
1442 instance
->instancet
->fire_cmd(instance
, cmd
->frame_phys_addr
,
1443 cmd
->frame_count
-1, instance
->reg_set
);
1447 megasas_return_cmd(instance
, cmd
);
1453 * megasas_queue_command - Queue entry point
1454 * @scmd: SCSI command to be queued
1455 * @done: Callback entry point
1458 megasas_queue_command_lck(struct scsi_cmnd
*scmd
, void (*done
) (struct scsi_cmnd
*))
1460 struct megasas_instance
*instance
;
1461 unsigned long flags
;
1463 instance
= (struct megasas_instance
*)
1464 scmd
->device
->host
->hostdata
;
1466 if (instance
->issuepend_done
== 0)
1467 return SCSI_MLQUEUE_HOST_BUSY
;
1469 spin_lock_irqsave(&instance
->hba_lock
, flags
);
1470 if (instance
->adprecovery
!= MEGASAS_HBA_OPERATIONAL
) {
1471 spin_unlock_irqrestore(&instance
->hba_lock
, flags
);
1472 return SCSI_MLQUEUE_HOST_BUSY
;
1475 spin_unlock_irqrestore(&instance
->hba_lock
, flags
);
1477 scmd
->scsi_done
= done
;
1480 if (MEGASAS_IS_LOGICAL(scmd
) &&
1481 (scmd
->device
->id
>= MEGASAS_MAX_LD
|| scmd
->device
->lun
)) {
1482 scmd
->result
= DID_BAD_TARGET
<< 16;
1486 switch (scmd
->cmnd
[0]) {
1487 case SYNCHRONIZE_CACHE
:
1489 * FW takes care of flush cache on its own
1490 * No need to send it down
1492 scmd
->result
= DID_OK
<< 16;
1498 if (instance
->instancet
->build_and_issue_cmd(instance
, scmd
)) {
1499 printk(KERN_ERR
"megasas: Err returned from build_and_issue_cmd\n");
1500 return SCSI_MLQUEUE_HOST_BUSY
;
1510 static DEF_SCSI_QCMD(megasas_queue_command
)
1512 static struct megasas_instance
*megasas_lookup_instance(u16 host_no
)
1516 for (i
= 0; i
< megasas_mgmt_info
.max_index
; i
++) {
1518 if ((megasas_mgmt_info
.instance
[i
]) &&
1519 (megasas_mgmt_info
.instance
[i
]->host
->host_no
== host_no
))
1520 return megasas_mgmt_info
.instance
[i
];
1526 static int megasas_slave_configure(struct scsi_device
*sdev
)
1529 struct megasas_instance
*instance
;
1531 instance
= megasas_lookup_instance(sdev
->host
->host_no
);
1534 * Don't export physical disk devices to the disk driver.
1536 * FIXME: Currently we don't export them to the midlayer at all.
1537 * That will be fixed once LSI engineers have audited the
1538 * firmware for possible issues.
1540 if (sdev
->channel
< MEGASAS_MAX_PD_CHANNELS
&&
1541 sdev
->type
== TYPE_DISK
) {
1542 pd_index
= (sdev
->channel
* MEGASAS_MAX_DEV_PER_CHANNEL
) +
1544 if (instance
->pd_list
[pd_index
].driveState
==
1545 MR_PD_STATE_SYSTEM
) {
1546 blk_queue_rq_timeout(sdev
->request_queue
,
1547 MEGASAS_DEFAULT_CMD_TIMEOUT
* HZ
);
1554 * The RAID firmware may require extended timeouts.
1556 blk_queue_rq_timeout(sdev
->request_queue
,
1557 MEGASAS_DEFAULT_CMD_TIMEOUT
* HZ
);
1561 static int megasas_slave_alloc(struct scsi_device
*sdev
)
1564 struct megasas_instance
*instance
;
1565 instance
= megasas_lookup_instance(sdev
->host
->host_no
);
1566 if ((sdev
->channel
< MEGASAS_MAX_PD_CHANNELS
) &&
1567 (sdev
->type
== TYPE_DISK
)) {
1569 * Open the OS scan to the SYSTEM PD
1572 (sdev
->channel
* MEGASAS_MAX_DEV_PER_CHANNEL
) +
1574 if ((instance
->pd_list
[pd_index
].driveState
==
1575 MR_PD_STATE_SYSTEM
) &&
1576 (instance
->pd_list
[pd_index
].driveType
==
1585 void megaraid_sas_kill_hba(struct megasas_instance
*instance
)
1587 if ((instance
->pdev
->device
== PCI_DEVICE_ID_LSI_SAS0073SKINNY
) ||
1588 (instance
->pdev
->device
== PCI_DEVICE_ID_LSI_SAS0071SKINNY
) ||
1589 (instance
->pdev
->device
== PCI_DEVICE_ID_LSI_FUSION
) ||
1590 (instance
->pdev
->device
== PCI_DEVICE_ID_LSI_INVADER
)) {
1591 writel(MFI_STOP_ADP
, &instance
->reg_set
->doorbell
);
1593 writel(MFI_STOP_ADP
, &instance
->reg_set
->inbound_doorbell
);
1598 * megasas_check_and_restore_queue_depth - Check if queue depth needs to be
1599 * restored to max value
1600 * @instance: Adapter soft state
1604 megasas_check_and_restore_queue_depth(struct megasas_instance
*instance
)
1606 unsigned long flags
;
1607 if (instance
->flag
& MEGASAS_FW_BUSY
1608 && time_after(jiffies
, instance
->last_time
+ 5 * HZ
)
1609 && atomic_read(&instance
->fw_outstanding
) <
1610 instance
->throttlequeuedepth
+ 1) {
1612 spin_lock_irqsave(instance
->host
->host_lock
, flags
);
1613 instance
->flag
&= ~MEGASAS_FW_BUSY
;
1614 if ((instance
->pdev
->device
==
1615 PCI_DEVICE_ID_LSI_SAS0073SKINNY
) ||
1616 (instance
->pdev
->device
==
1617 PCI_DEVICE_ID_LSI_SAS0071SKINNY
)) {
1618 instance
->host
->can_queue
=
1619 instance
->max_fw_cmds
- MEGASAS_SKINNY_INT_CMDS
;
1621 instance
->host
->can_queue
=
1622 instance
->max_fw_cmds
- MEGASAS_INT_CMDS
;
1624 spin_unlock_irqrestore(instance
->host
->host_lock
, flags
);
1629 * megasas_complete_cmd_dpc - Returns FW's controller structure
1630 * @instance_addr: Address of adapter soft state
1632 * Tasklet to complete cmds
1634 static void megasas_complete_cmd_dpc(unsigned long instance_addr
)
1639 struct megasas_cmd
*cmd
;
1640 struct megasas_instance
*instance
=
1641 (struct megasas_instance
*)instance_addr
;
1642 unsigned long flags
;
1644 /* If we have already declared adapter dead, donot complete cmds */
1645 if (instance
->adprecovery
== MEGASAS_HW_CRITICAL_ERROR
)
1648 spin_lock_irqsave(&instance
->completion_lock
, flags
);
1650 producer
= *instance
->producer
;
1651 consumer
= *instance
->consumer
;
1653 while (consumer
!= producer
) {
1654 context
= instance
->reply_queue
[consumer
];
1655 if (context
>= instance
->max_fw_cmds
) {
1656 printk(KERN_ERR
"Unexpected context value %x\n",
1661 cmd
= instance
->cmd_list
[context
];
1663 megasas_complete_cmd(instance
, cmd
, DID_OK
);
1666 if (consumer
== (instance
->max_fw_cmds
+ 1)) {
1671 *instance
->consumer
= producer
;
1673 spin_unlock_irqrestore(&instance
->completion_lock
, flags
);
1676 * Check if we can restore can_queue
1678 megasas_check_and_restore_queue_depth(instance
);
1682 megasas_internal_reset_defer_cmds(struct megasas_instance
*instance
);
1685 process_fw_state_change_wq(struct work_struct
*work
);
1687 void megasas_do_ocr(struct megasas_instance
*instance
)
1689 if ((instance
->pdev
->device
== PCI_DEVICE_ID_LSI_SAS1064R
) ||
1690 (instance
->pdev
->device
== PCI_DEVICE_ID_DELL_PERC5
) ||
1691 (instance
->pdev
->device
== PCI_DEVICE_ID_LSI_VERDE_ZCR
)) {
1692 *instance
->consumer
= MEGASAS_ADPRESET_INPROG_SIGN
;
1694 instance
->instancet
->disable_intr(instance
->reg_set
);
1695 instance
->adprecovery
= MEGASAS_ADPRESET_SM_INFAULT
;
1696 instance
->issuepend_done
= 0;
1698 atomic_set(&instance
->fw_outstanding
, 0);
1699 megasas_internal_reset_defer_cmds(instance
);
1700 process_fw_state_change_wq(&instance
->work_init
);
1704 * megasas_wait_for_outstanding - Wait for all outstanding cmds
1705 * @instance: Adapter soft state
1707 * This function waits for up to MEGASAS_RESET_WAIT_TIME seconds for FW to
1708 * complete all its outstanding commands. Returns error if one or more IOs
1709 * are pending after this time period. It also marks the controller dead.
1711 static int megasas_wait_for_outstanding(struct megasas_instance
*instance
)
1715 u32 wait_time
= MEGASAS_RESET_WAIT_TIME
;
1717 unsigned long flags
;
1718 struct list_head clist_local
;
1719 struct megasas_cmd
*reset_cmd
;
1721 u8 kill_adapter_flag
;
1723 spin_lock_irqsave(&instance
->hba_lock
, flags
);
1724 adprecovery
= instance
->adprecovery
;
1725 spin_unlock_irqrestore(&instance
->hba_lock
, flags
);
1727 if (adprecovery
!= MEGASAS_HBA_OPERATIONAL
) {
1729 INIT_LIST_HEAD(&clist_local
);
1730 spin_lock_irqsave(&instance
->hba_lock
, flags
);
1731 list_splice_init(&instance
->internal_reset_pending_q
,
1733 spin_unlock_irqrestore(&instance
->hba_lock
, flags
);
1735 printk(KERN_NOTICE
"megasas: HBA reset wait ...\n");
1736 for (i
= 0; i
< wait_time
; i
++) {
1738 spin_lock_irqsave(&instance
->hba_lock
, flags
);
1739 adprecovery
= instance
->adprecovery
;
1740 spin_unlock_irqrestore(&instance
->hba_lock
, flags
);
1741 if (adprecovery
== MEGASAS_HBA_OPERATIONAL
)
1745 if (adprecovery
!= MEGASAS_HBA_OPERATIONAL
) {
1746 printk(KERN_NOTICE
"megasas: reset: Stopping HBA.\n");
1747 spin_lock_irqsave(&instance
->hba_lock
, flags
);
1748 instance
->adprecovery
= MEGASAS_HW_CRITICAL_ERROR
;
1749 spin_unlock_irqrestore(&instance
->hba_lock
, flags
);
1754 while (!list_empty(&clist_local
)) {
1755 reset_cmd
= list_entry((&clist_local
)->next
,
1756 struct megasas_cmd
, list
);
1757 list_del_init(&reset_cmd
->list
);
1758 if (reset_cmd
->scmd
) {
1759 reset_cmd
->scmd
->result
= DID_RESET
<< 16;
1760 printk(KERN_NOTICE
"%d:%p reset [%02x]\n",
1761 reset_index
, reset_cmd
,
1762 reset_cmd
->scmd
->cmnd
[0]);
1764 reset_cmd
->scmd
->scsi_done(reset_cmd
->scmd
);
1765 megasas_return_cmd(instance
, reset_cmd
);
1766 } else if (reset_cmd
->sync_cmd
) {
1767 printk(KERN_NOTICE
"megasas:%p synch cmds"
1771 reset_cmd
->cmd_status
= ENODATA
;
1772 instance
->instancet
->fire_cmd(instance
,
1773 reset_cmd
->frame_phys_addr
,
1774 0, instance
->reg_set
);
1776 printk(KERN_NOTICE
"megasas: %p unexpected"
1786 for (i
= 0; i
< resetwaittime
; i
++) {
1788 int outstanding
= atomic_read(&instance
->fw_outstanding
);
1793 if (!(i
% MEGASAS_RESET_NOTICE_INTERVAL
)) {
1794 printk(KERN_NOTICE
"megasas: [%2d]waiting for %d "
1795 "commands to complete\n",i
,outstanding
);
1797 * Call cmd completion routine. Cmd to be
1798 * be completed directly without depending on isr.
1800 megasas_complete_cmd_dpc((unsigned long)instance
);
1807 kill_adapter_flag
= 0;
1809 fw_state
= instance
->instancet
->read_fw_status_reg(
1810 instance
->reg_set
) & MFI_STATE_MASK
;
1811 if ((fw_state
== MFI_STATE_FAULT
) &&
1812 (instance
->disableOnlineCtrlReset
== 0)) {
1814 kill_adapter_flag
= 2;
1817 megasas_do_ocr(instance
);
1818 kill_adapter_flag
= 1;
1820 /* wait for 1 secs to let FW finish the pending cmds */
1826 if (atomic_read(&instance
->fw_outstanding
) &&
1827 !kill_adapter_flag
) {
1828 if (instance
->disableOnlineCtrlReset
== 0) {
1830 megasas_do_ocr(instance
);
1832 /* wait for 5 secs to let FW finish the pending cmds */
1833 for (i
= 0; i
< wait_time
; i
++) {
1835 atomic_read(&instance
->fw_outstanding
);
1843 if (atomic_read(&instance
->fw_outstanding
) ||
1844 (kill_adapter_flag
== 2)) {
1845 printk(KERN_NOTICE
"megaraid_sas: pending cmds after reset\n");
1847 * Send signal to FW to stop processing any pending cmds.
1848 * The controller will be taken offline by the OS now.
1850 if ((instance
->pdev
->device
==
1851 PCI_DEVICE_ID_LSI_SAS0073SKINNY
) ||
1852 (instance
->pdev
->device
==
1853 PCI_DEVICE_ID_LSI_SAS0071SKINNY
)) {
1854 writel(MFI_STOP_ADP
,
1855 &instance
->reg_set
->doorbell
);
1857 writel(MFI_STOP_ADP
,
1858 &instance
->reg_set
->inbound_doorbell
);
1860 megasas_dump_pending_frames(instance
);
1861 spin_lock_irqsave(&instance
->hba_lock
, flags
);
1862 instance
->adprecovery
= MEGASAS_HW_CRITICAL_ERROR
;
1863 spin_unlock_irqrestore(&instance
->hba_lock
, flags
);
1867 printk(KERN_NOTICE
"megaraid_sas: no pending cmds after reset\n");
1873 * megasas_generic_reset - Generic reset routine
1874 * @scmd: Mid-layer SCSI command
1876 * This routine implements a generic reset handler for device, bus and host
1877 * reset requests. Device, bus and host specific reset handlers can use this
1878 * function after they do their specific tasks.
1880 static int megasas_generic_reset(struct scsi_cmnd
*scmd
)
1883 struct megasas_instance
*instance
;
1885 instance
= (struct megasas_instance
*)scmd
->device
->host
->hostdata
;
1887 scmd_printk(KERN_NOTICE
, scmd
, "megasas: RESET cmd=%x retries=%x\n",
1888 scmd
->cmnd
[0], scmd
->retries
);
1890 if (instance
->adprecovery
== MEGASAS_HW_CRITICAL_ERROR
) {
1891 printk(KERN_ERR
"megasas: cannot recover from previous reset "
1896 ret_val
= megasas_wait_for_outstanding(instance
);
1897 if (ret_val
== SUCCESS
)
1898 printk(KERN_NOTICE
"megasas: reset successful \n");
1900 printk(KERN_ERR
"megasas: failed to do reset\n");
1906 * megasas_reset_timer - quiesce the adapter if required
1909 * Sets the FW busy flag and reduces the host->can_queue if the
1910 * cmd has not been completed within the timeout period.
1913 blk_eh_timer_return
megasas_reset_timer(struct scsi_cmnd
*scmd
)
1915 struct megasas_instance
*instance
;
1916 unsigned long flags
;
1918 if (time_after(jiffies
, scmd
->jiffies_at_alloc
+
1919 (MEGASAS_DEFAULT_CMD_TIMEOUT
* 2) * HZ
)) {
1920 return BLK_EH_NOT_HANDLED
;
1923 instance
= (struct megasas_instance
*)scmd
->device
->host
->hostdata
;
1924 if (!(instance
->flag
& MEGASAS_FW_BUSY
)) {
1925 /* FW is busy, throttle IO */
1926 spin_lock_irqsave(instance
->host
->host_lock
, flags
);
1928 instance
->host
->can_queue
= instance
->throttlequeuedepth
;
1929 instance
->last_time
= jiffies
;
1930 instance
->flag
|= MEGASAS_FW_BUSY
;
1932 spin_unlock_irqrestore(instance
->host
->host_lock
, flags
);
1934 return BLK_EH_RESET_TIMER
;
1938 * megasas_reset_device - Device reset handler entry point
1940 static int megasas_reset_device(struct scsi_cmnd
*scmd
)
1945 * First wait for all commands to complete
1947 ret
= megasas_generic_reset(scmd
);
1953 * megasas_reset_bus_host - Bus & host reset handler entry point
1955 static int megasas_reset_bus_host(struct scsi_cmnd
*scmd
)
1958 struct megasas_instance
*instance
;
1959 instance
= (struct megasas_instance
*)scmd
->device
->host
->hostdata
;
1962 * First wait for all commands to complete
1964 if ((instance
->pdev
->device
== PCI_DEVICE_ID_LSI_FUSION
) ||
1965 (instance
->pdev
->device
== PCI_DEVICE_ID_LSI_INVADER
))
1966 ret
= megasas_reset_fusion(scmd
->device
->host
);
1968 ret
= megasas_generic_reset(scmd
);
1974 * megasas_bios_param - Returns disk geometry for a disk
1975 * @sdev: device handle
1976 * @bdev: block device
1977 * @capacity: drive capacity
1978 * @geom: geometry parameters
1981 megasas_bios_param(struct scsi_device
*sdev
, struct block_device
*bdev
,
1982 sector_t capacity
, int geom
[])
1988 /* Default heads (64) & sectors (32) */
1992 tmp
= heads
* sectors
;
1993 cylinders
= capacity
;
1995 sector_div(cylinders
, tmp
);
1998 * Handle extended translation size for logical drives > 1Gb
2001 if (capacity
>= 0x200000) {
2004 tmp
= heads
*sectors
;
2005 cylinders
= capacity
;
2006 sector_div(cylinders
, tmp
);
2011 geom
[2] = cylinders
;
2016 static void megasas_aen_polling(struct work_struct
*work
);
2019 * megasas_service_aen - Processes an event notification
2020 * @instance: Adapter soft state
2021 * @cmd: AEN command completed by the ISR
2023 * For AEN, driver sends a command down to FW that is held by the FW till an
2024 * event occurs. When an event of interest occurs, FW completes the command
2025 * that it was previously holding.
2027 * This routines sends SIGIO signal to processes that have registered with the
2031 megasas_service_aen(struct megasas_instance
*instance
, struct megasas_cmd
*cmd
)
2033 unsigned long flags
;
2035 * Don't signal app if it is just an aborted previously registered aen
2037 if ((!cmd
->abort_aen
) && (instance
->unload
== 0)) {
2038 spin_lock_irqsave(&poll_aen_lock
, flags
);
2039 megasas_poll_wait_aen
= 1;
2040 spin_unlock_irqrestore(&poll_aen_lock
, flags
);
2041 wake_up(&megasas_poll_wait
);
2042 kill_fasync(&megasas_async_queue
, SIGIO
, POLL_IN
);
2047 instance
->aen_cmd
= NULL
;
2048 megasas_return_cmd(instance
, cmd
);
2050 if ((instance
->unload
== 0) &&
2051 ((instance
->issuepend_done
== 1))) {
2052 struct megasas_aen_event
*ev
;
2053 ev
= kzalloc(sizeof(*ev
), GFP_ATOMIC
);
2055 printk(KERN_ERR
"megasas_service_aen: out of memory\n");
2057 ev
->instance
= instance
;
2059 INIT_WORK(&ev
->hotplug_work
, megasas_aen_polling
);
2060 schedule_delayed_work(
2061 (struct delayed_work
*)&ev
->hotplug_work
, 0);
2066 static int megasas_change_queue_depth(struct scsi_device
*sdev
,
2067 int queue_depth
, int reason
)
2069 if (reason
!= SCSI_QDEPTH_DEFAULT
)
2072 if (queue_depth
> sdev
->host
->can_queue
)
2073 queue_depth
= sdev
->host
->can_queue
;
2074 scsi_adjust_queue_depth(sdev
, scsi_get_tag_type(sdev
),
2081 * Scsi host template for megaraid_sas driver
2083 static struct scsi_host_template megasas_template
= {
2085 .module
= THIS_MODULE
,
2086 .name
= "LSI SAS based MegaRAID driver",
2087 .proc_name
= "megaraid_sas",
2088 .slave_configure
= megasas_slave_configure
,
2089 .slave_alloc
= megasas_slave_alloc
,
2090 .queuecommand
= megasas_queue_command
,
2091 .eh_device_reset_handler
= megasas_reset_device
,
2092 .eh_bus_reset_handler
= megasas_reset_bus_host
,
2093 .eh_host_reset_handler
= megasas_reset_bus_host
,
2094 .eh_timed_out
= megasas_reset_timer
,
2095 .bios_param
= megasas_bios_param
,
2096 .use_clustering
= ENABLE_CLUSTERING
,
2097 .change_queue_depth
= megasas_change_queue_depth
,
2101 * megasas_complete_int_cmd - Completes an internal command
2102 * @instance: Adapter soft state
2103 * @cmd: Command to be completed
2105 * The megasas_issue_blocked_cmd() function waits for a command to complete
2106 * after it issues a command. This function wakes up that waiting routine by
2107 * calling wake_up() on the wait queue.
2110 megasas_complete_int_cmd(struct megasas_instance
*instance
,
2111 struct megasas_cmd
*cmd
)
2113 cmd
->cmd_status
= cmd
->frame
->io
.cmd_status
;
2115 if (cmd
->cmd_status
== ENODATA
) {
2116 cmd
->cmd_status
= 0;
2118 wake_up(&instance
->int_cmd_wait_q
);
2122 * megasas_complete_abort - Completes aborting a command
2123 * @instance: Adapter soft state
2124 * @cmd: Cmd that was issued to abort another cmd
2126 * The megasas_issue_blocked_abort_cmd() function waits on abort_cmd_wait_q
2127 * after it issues an abort on a previously issued command. This function
2128 * wakes up all functions waiting on the same wait queue.
2131 megasas_complete_abort(struct megasas_instance
*instance
,
2132 struct megasas_cmd
*cmd
)
2134 if (cmd
->sync_cmd
) {
2136 cmd
->cmd_status
= 0;
2137 wake_up(&instance
->abort_cmd_wait_q
);
2144 * megasas_complete_cmd - Completes a command
2145 * @instance: Adapter soft state
2146 * @cmd: Command to be completed
2147 * @alt_status: If non-zero, use this value as status to
2148 * SCSI mid-layer instead of the value returned
2149 * by the FW. This should be used if caller wants
2150 * an alternate status (as in the case of aborted
2154 megasas_complete_cmd(struct megasas_instance
*instance
, struct megasas_cmd
*cmd
,
2158 struct megasas_header
*hdr
= &cmd
->frame
->hdr
;
2159 unsigned long flags
;
2160 struct fusion_context
*fusion
= instance
->ctrl_context
;
2162 /* flag for the retry reset */
2163 cmd
->retry_for_fw_reset
= 0;
2166 cmd
->scmd
->SCp
.ptr
= NULL
;
2169 case MFI_CMD_INVALID
:
2170 /* Some older 1068 controller FW may keep a pended
2171 MR_DCMD_CTRL_EVENT_GET_INFO left over from the main kernel
2172 when booting the kdump kernel. Ignore this command to
2173 prevent a kernel panic on shutdown of the kdump kernel. */
2174 printk(KERN_WARNING
"megaraid_sas: MFI_CMD_INVALID command "
2176 printk(KERN_WARNING
"megaraid_sas: If you have a controller "
2177 "other than PERC5, please upgrade your firmware.\n");
2179 case MFI_CMD_PD_SCSI_IO
:
2180 case MFI_CMD_LD_SCSI_IO
:
2183 * MFI_CMD_PD_SCSI_IO and MFI_CMD_LD_SCSI_IO could have been
2184 * issued either through an IO path or an IOCTL path. If it
2185 * was via IOCTL, we will send it to internal completion.
2187 if (cmd
->sync_cmd
) {
2189 megasas_complete_int_cmd(instance
, cmd
);
2193 case MFI_CMD_LD_READ
:
2194 case MFI_CMD_LD_WRITE
:
2197 cmd
->scmd
->result
= alt_status
<< 16;
2203 atomic_dec(&instance
->fw_outstanding
);
2205 scsi_dma_unmap(cmd
->scmd
);
2206 cmd
->scmd
->scsi_done(cmd
->scmd
);
2207 megasas_return_cmd(instance
, cmd
);
2212 switch (hdr
->cmd_status
) {
2215 cmd
->scmd
->result
= DID_OK
<< 16;
2218 case MFI_STAT_SCSI_IO_FAILED
:
2219 case MFI_STAT_LD_INIT_IN_PROGRESS
:
2221 (DID_ERROR
<< 16) | hdr
->scsi_status
;
2224 case MFI_STAT_SCSI_DONE_WITH_ERROR
:
2226 cmd
->scmd
->result
= (DID_OK
<< 16) | hdr
->scsi_status
;
2228 if (hdr
->scsi_status
== SAM_STAT_CHECK_CONDITION
) {
2229 memset(cmd
->scmd
->sense_buffer
, 0,
2230 SCSI_SENSE_BUFFERSIZE
);
2231 memcpy(cmd
->scmd
->sense_buffer
, cmd
->sense
,
2234 cmd
->scmd
->result
|= DRIVER_SENSE
<< 24;
2239 case MFI_STAT_LD_OFFLINE
:
2240 case MFI_STAT_DEVICE_NOT_FOUND
:
2241 cmd
->scmd
->result
= DID_BAD_TARGET
<< 16;
2245 printk(KERN_DEBUG
"megasas: MFI FW status %#x\n",
2247 cmd
->scmd
->result
= DID_ERROR
<< 16;
2251 atomic_dec(&instance
->fw_outstanding
);
2253 scsi_dma_unmap(cmd
->scmd
);
2254 cmd
->scmd
->scsi_done(cmd
->scmd
);
2255 megasas_return_cmd(instance
, cmd
);
2262 /* Check for LD map update */
2263 if ((cmd
->frame
->dcmd
.opcode
== MR_DCMD_LD_MAP_GET_INFO
) &&
2264 (cmd
->frame
->dcmd
.mbox
.b
[1] == 1)) {
2265 spin_lock_irqsave(instance
->host
->host_lock
, flags
);
2266 if (cmd
->frame
->hdr
.cmd_status
!= 0) {
2267 if (cmd
->frame
->hdr
.cmd_status
!=
2269 printk(KERN_WARNING
"megasas: map sync"
2270 "failed, status = 0x%x.\n",
2271 cmd
->frame
->hdr
.cmd_status
);
2273 megasas_return_cmd(instance
, cmd
);
2274 spin_unlock_irqrestore(
2275 instance
->host
->host_lock
,
2281 megasas_return_cmd(instance
, cmd
);
2282 if (MR_ValidateMapInfo(
2283 fusion
->ld_map
[(instance
->map_id
& 1)],
2284 fusion
->load_balance_info
))
2285 fusion
->fast_path_io
= 1;
2287 fusion
->fast_path_io
= 0;
2288 megasas_sync_map_info(instance
);
2289 spin_unlock_irqrestore(instance
->host
->host_lock
,
2293 if (cmd
->frame
->dcmd
.opcode
== MR_DCMD_CTRL_EVENT_GET_INFO
||
2294 cmd
->frame
->dcmd
.opcode
== MR_DCMD_CTRL_EVENT_GET
) {
2295 spin_lock_irqsave(&poll_aen_lock
, flags
);
2296 megasas_poll_wait_aen
= 0;
2297 spin_unlock_irqrestore(&poll_aen_lock
, flags
);
2301 * See if got an event notification
2303 if (cmd
->frame
->dcmd
.opcode
== MR_DCMD_CTRL_EVENT_WAIT
)
2304 megasas_service_aen(instance
, cmd
);
2306 megasas_complete_int_cmd(instance
, cmd
);
2312 * Cmd issued to abort another cmd returned
2314 megasas_complete_abort(instance
, cmd
);
2318 printk("megasas: Unknown command completed! [0x%X]\n",
2325 * megasas_issue_pending_cmds_again - issue all pending cmds
2326 * in FW again because of the fw reset
2327 * @instance: Adapter soft state
2330 megasas_issue_pending_cmds_again(struct megasas_instance
*instance
)
2332 struct megasas_cmd
*cmd
;
2333 struct list_head clist_local
;
2334 union megasas_evt_class_locale class_locale
;
2335 unsigned long flags
;
2338 INIT_LIST_HEAD(&clist_local
);
2339 spin_lock_irqsave(&instance
->hba_lock
, flags
);
2340 list_splice_init(&instance
->internal_reset_pending_q
, &clist_local
);
2341 spin_unlock_irqrestore(&instance
->hba_lock
, flags
);
2343 while (!list_empty(&clist_local
)) {
2344 cmd
= list_entry((&clist_local
)->next
,
2345 struct megasas_cmd
, list
);
2346 list_del_init(&cmd
->list
);
2348 if (cmd
->sync_cmd
|| cmd
->scmd
) {
2349 printk(KERN_NOTICE
"megaraid_sas: command %p, %p:%d"
2350 "detected to be pending while HBA reset.\n",
2351 cmd
, cmd
->scmd
, cmd
->sync_cmd
);
2353 cmd
->retry_for_fw_reset
++;
2355 if (cmd
->retry_for_fw_reset
== 3) {
2356 printk(KERN_NOTICE
"megaraid_sas: cmd %p, %p:%d"
2357 "was tried multiple times during reset."
2358 "Shutting down the HBA\n",
2359 cmd
, cmd
->scmd
, cmd
->sync_cmd
);
2360 megaraid_sas_kill_hba(instance
);
2362 instance
->adprecovery
=
2363 MEGASAS_HW_CRITICAL_ERROR
;
2368 if (cmd
->sync_cmd
== 1) {
2370 printk(KERN_NOTICE
"megaraid_sas: unexpected"
2371 "cmd attached to internal command!\n");
2373 printk(KERN_NOTICE
"megasas: %p synchronous cmd"
2374 "on the internal reset queue,"
2375 "issue it again.\n", cmd
);
2376 cmd
->cmd_status
= ENODATA
;
2377 instance
->instancet
->fire_cmd(instance
,
2378 cmd
->frame_phys_addr
,
2379 0, instance
->reg_set
);
2380 } else if (cmd
->scmd
) {
2381 printk(KERN_NOTICE
"megasas: %p scsi cmd [%02x]"
2382 "detected on the internal queue, issue again.\n",
2383 cmd
, cmd
->scmd
->cmnd
[0]);
2385 atomic_inc(&instance
->fw_outstanding
);
2386 instance
->instancet
->fire_cmd(instance
,
2387 cmd
->frame_phys_addr
,
2388 cmd
->frame_count
-1, instance
->reg_set
);
2390 printk(KERN_NOTICE
"megasas: %p unexpected cmd on the"
2391 "internal reset defer list while re-issue!!\n",
2396 if (instance
->aen_cmd
) {
2397 printk(KERN_NOTICE
"megaraid_sas: aen_cmd in def process\n");
2398 megasas_return_cmd(instance
, instance
->aen_cmd
);
2400 instance
->aen_cmd
= NULL
;
2404 * Initiate AEN (Asynchronous Event Notification)
2406 seq_num
= instance
->last_seq_num
;
2407 class_locale
.members
.reserved
= 0;
2408 class_locale
.members
.locale
= MR_EVT_LOCALE_ALL
;
2409 class_locale
.members
.class = MR_EVT_CLASS_DEBUG
;
2411 megasas_register_aen(instance
, seq_num
, class_locale
.word
);
2415 * Move the internal reset pending commands to a deferred queue.
2417 * We move the commands pending at internal reset time to a
2418 * pending queue. This queue would be flushed after successful
2419 * completion of the internal reset sequence. if the internal reset
2420 * did not complete in time, the kernel reset handler would flush
2424 megasas_internal_reset_defer_cmds(struct megasas_instance
*instance
)
2426 struct megasas_cmd
*cmd
;
2428 u32 max_cmd
= instance
->max_fw_cmds
;
2430 unsigned long flags
;
2433 spin_lock_irqsave(&instance
->cmd_pool_lock
, flags
);
2434 for (i
= 0; i
< max_cmd
; i
++) {
2435 cmd
= instance
->cmd_list
[i
];
2436 if (cmd
->sync_cmd
== 1 || cmd
->scmd
) {
2437 printk(KERN_NOTICE
"megasas: moving cmd[%d]:%p:%d:%p"
2438 "on the defer queue as internal\n",
2439 defer_index
, cmd
, cmd
->sync_cmd
, cmd
->scmd
);
2441 if (!list_empty(&cmd
->list
)) {
2442 printk(KERN_NOTICE
"megaraid_sas: ERROR while"
2443 " moving this cmd:%p, %d %p, it was"
2444 "discovered on some list?\n",
2445 cmd
, cmd
->sync_cmd
, cmd
->scmd
);
2447 list_del_init(&cmd
->list
);
2450 list_add_tail(&cmd
->list
,
2451 &instance
->internal_reset_pending_q
);
2454 spin_unlock_irqrestore(&instance
->cmd_pool_lock
, flags
);
2459 process_fw_state_change_wq(struct work_struct
*work
)
2461 struct megasas_instance
*instance
=
2462 container_of(work
, struct megasas_instance
, work_init
);
2464 unsigned long flags
;
2466 if (instance
->adprecovery
!= MEGASAS_ADPRESET_SM_INFAULT
) {
2467 printk(KERN_NOTICE
"megaraid_sas: error, recovery st %x \n",
2468 instance
->adprecovery
);
2472 if (instance
->adprecovery
== MEGASAS_ADPRESET_SM_INFAULT
) {
2473 printk(KERN_NOTICE
"megaraid_sas: FW detected to be in fault"
2474 "state, restarting it...\n");
2476 instance
->instancet
->disable_intr(instance
->reg_set
);
2477 atomic_set(&instance
->fw_outstanding
, 0);
2479 atomic_set(&instance
->fw_reset_no_pci_access
, 1);
2480 instance
->instancet
->adp_reset(instance
, instance
->reg_set
);
2481 atomic_set(&instance
->fw_reset_no_pci_access
, 0 );
2483 printk(KERN_NOTICE
"megaraid_sas: FW restarted successfully,"
2484 "initiating next stage...\n");
2486 printk(KERN_NOTICE
"megaraid_sas: HBA recovery state machine,"
2487 "state 2 starting...\n");
2489 /*waitting for about 20 second before start the second init*/
2490 for (wait
= 0; wait
< 30; wait
++) {
2494 if (megasas_transition_to_ready(instance
, 1)) {
2495 printk(KERN_NOTICE
"megaraid_sas:adapter not ready\n");
2497 megaraid_sas_kill_hba(instance
);
2498 instance
->adprecovery
= MEGASAS_HW_CRITICAL_ERROR
;
2502 if ((instance
->pdev
->device
== PCI_DEVICE_ID_LSI_SAS1064R
) ||
2503 (instance
->pdev
->device
== PCI_DEVICE_ID_DELL_PERC5
) ||
2504 (instance
->pdev
->device
== PCI_DEVICE_ID_LSI_VERDE_ZCR
)
2506 *instance
->consumer
= *instance
->producer
;
2508 *instance
->consumer
= 0;
2509 *instance
->producer
= 0;
2512 megasas_issue_init_mfi(instance
);
2514 spin_lock_irqsave(&instance
->hba_lock
, flags
);
2515 instance
->adprecovery
= MEGASAS_HBA_OPERATIONAL
;
2516 spin_unlock_irqrestore(&instance
->hba_lock
, flags
);
2517 instance
->instancet
->enable_intr(instance
->reg_set
);
2519 megasas_issue_pending_cmds_again(instance
);
2520 instance
->issuepend_done
= 1;
2526 * megasas_deplete_reply_queue - Processes all completed commands
2527 * @instance: Adapter soft state
2528 * @alt_status: Alternate status to be returned to
2529 * SCSI mid-layer instead of the status
2530 * returned by the FW
2531 * Note: this must be called with hba lock held
2534 megasas_deplete_reply_queue(struct megasas_instance
*instance
,
2540 if ((mfiStatus
= instance
->instancet
->check_reset(instance
,
2541 instance
->reg_set
)) == 1) {
2545 if ((mfiStatus
= instance
->instancet
->clear_intr(
2548 /* Hardware may not set outbound_intr_status in MSI-X mode */
2549 if (!instance
->msix_vectors
)
2553 instance
->mfiStatus
= mfiStatus
;
2555 if ((mfiStatus
& MFI_INTR_FLAG_FIRMWARE_STATE_CHANGE
)) {
2556 fw_state
= instance
->instancet
->read_fw_status_reg(
2557 instance
->reg_set
) & MFI_STATE_MASK
;
2559 if (fw_state
!= MFI_STATE_FAULT
) {
2560 printk(KERN_NOTICE
"megaraid_sas: fw state:%x\n",
2564 if ((fw_state
== MFI_STATE_FAULT
) &&
2565 (instance
->disableOnlineCtrlReset
== 0)) {
2566 printk(KERN_NOTICE
"megaraid_sas: wait adp restart\n");
2568 if ((instance
->pdev
->device
==
2569 PCI_DEVICE_ID_LSI_SAS1064R
) ||
2570 (instance
->pdev
->device
==
2571 PCI_DEVICE_ID_DELL_PERC5
) ||
2572 (instance
->pdev
->device
==
2573 PCI_DEVICE_ID_LSI_VERDE_ZCR
)) {
2575 *instance
->consumer
=
2576 MEGASAS_ADPRESET_INPROG_SIGN
;
2580 instance
->instancet
->disable_intr(instance
->reg_set
);
2581 instance
->adprecovery
= MEGASAS_ADPRESET_SM_INFAULT
;
2582 instance
->issuepend_done
= 0;
2584 atomic_set(&instance
->fw_outstanding
, 0);
2585 megasas_internal_reset_defer_cmds(instance
);
2587 printk(KERN_NOTICE
"megasas: fwState=%x, stage:%d\n",
2588 fw_state
, instance
->adprecovery
);
2590 schedule_work(&instance
->work_init
);
2594 printk(KERN_NOTICE
"megasas: fwstate:%x, dis_OCR=%x\n",
2595 fw_state
, instance
->disableOnlineCtrlReset
);
2599 tasklet_schedule(&instance
->isr_tasklet
);
2603 * megasas_isr - isr entry point
2605 static irqreturn_t
megasas_isr(int irq
, void *devp
)
2607 struct megasas_irq_context
*irq_context
= devp
;
2608 struct megasas_instance
*instance
= irq_context
->instance
;
2609 unsigned long flags
;
2612 if (atomic_read(&instance
->fw_reset_no_pci_access
))
2615 spin_lock_irqsave(&instance
->hba_lock
, flags
);
2616 rc
= megasas_deplete_reply_queue(instance
, DID_OK
);
2617 spin_unlock_irqrestore(&instance
->hba_lock
, flags
);
2623 * megasas_transition_to_ready - Move the FW to READY state
2624 * @instance: Adapter soft state
2626 * During the initialization, FW passes can potentially be in any one of
2627 * several possible states. If the FW in operational, waiting-for-handshake
2628 * states, driver must take steps to bring it to ready state. Otherwise, it
2629 * has to wait for the ready state.
2632 megasas_transition_to_ready(struct megasas_instance
*instance
, int ocr
)
2638 u32 abs_state
, curr_abs_state
;
2640 fw_state
= instance
->instancet
->read_fw_status_reg(instance
->reg_set
) & MFI_STATE_MASK
;
2642 if (fw_state
!= MFI_STATE_READY
)
2643 printk(KERN_INFO
"megasas: Waiting for FW to come to ready"
2646 while (fw_state
!= MFI_STATE_READY
) {
2649 instance
->instancet
->read_fw_status_reg(instance
->reg_set
);
2653 case MFI_STATE_FAULT
:
2654 printk(KERN_DEBUG
"megasas: FW in FAULT state!!\n");
2656 max_wait
= MEGASAS_RESET_WAIT_TIME
;
2657 cur_state
= MFI_STATE_FAULT
;
2662 case MFI_STATE_WAIT_HANDSHAKE
:
2664 * Set the CLR bit in inbound doorbell
2666 if ((instance
->pdev
->device
==
2667 PCI_DEVICE_ID_LSI_SAS0073SKINNY
) ||
2668 (instance
->pdev
->device
==
2669 PCI_DEVICE_ID_LSI_SAS0071SKINNY
) ||
2670 (instance
->pdev
->device
==
2671 PCI_DEVICE_ID_LSI_FUSION
) ||
2672 (instance
->pdev
->device
==
2673 PCI_DEVICE_ID_LSI_INVADER
)) {
2675 MFI_INIT_CLEAR_HANDSHAKE
|MFI_INIT_HOTPLUG
,
2676 &instance
->reg_set
->doorbell
);
2679 MFI_INIT_CLEAR_HANDSHAKE
|MFI_INIT_HOTPLUG
,
2680 &instance
->reg_set
->inbound_doorbell
);
2683 max_wait
= MEGASAS_RESET_WAIT_TIME
;
2684 cur_state
= MFI_STATE_WAIT_HANDSHAKE
;
2687 case MFI_STATE_BOOT_MESSAGE_PENDING
:
2688 if ((instance
->pdev
->device
==
2689 PCI_DEVICE_ID_LSI_SAS0073SKINNY
) ||
2690 (instance
->pdev
->device
==
2691 PCI_DEVICE_ID_LSI_SAS0071SKINNY
) ||
2692 (instance
->pdev
->device
==
2693 PCI_DEVICE_ID_LSI_FUSION
) ||
2694 (instance
->pdev
->device
==
2695 PCI_DEVICE_ID_LSI_INVADER
)) {
2696 writel(MFI_INIT_HOTPLUG
,
2697 &instance
->reg_set
->doorbell
);
2699 writel(MFI_INIT_HOTPLUG
,
2700 &instance
->reg_set
->inbound_doorbell
);
2702 max_wait
= MEGASAS_RESET_WAIT_TIME
;
2703 cur_state
= MFI_STATE_BOOT_MESSAGE_PENDING
;
2706 case MFI_STATE_OPERATIONAL
:
2708 * Bring it to READY state; assuming max wait 10 secs
2710 instance
->instancet
->disable_intr(instance
->reg_set
);
2711 if ((instance
->pdev
->device
==
2712 PCI_DEVICE_ID_LSI_SAS0073SKINNY
) ||
2713 (instance
->pdev
->device
==
2714 PCI_DEVICE_ID_LSI_SAS0071SKINNY
) ||
2715 (instance
->pdev
->device
2716 == PCI_DEVICE_ID_LSI_FUSION
) ||
2717 (instance
->pdev
->device
2718 == PCI_DEVICE_ID_LSI_INVADER
)) {
2719 writel(MFI_RESET_FLAGS
,
2720 &instance
->reg_set
->doorbell
);
2721 if ((instance
->pdev
->device
==
2722 PCI_DEVICE_ID_LSI_FUSION
) ||
2723 (instance
->pdev
->device
==
2724 PCI_DEVICE_ID_LSI_INVADER
)) {
2725 for (i
= 0; i
< (10 * 1000); i
+= 20) {
2736 writel(MFI_RESET_FLAGS
,
2737 &instance
->reg_set
->inbound_doorbell
);
2739 max_wait
= MEGASAS_RESET_WAIT_TIME
;
2740 cur_state
= MFI_STATE_OPERATIONAL
;
2743 case MFI_STATE_UNDEFINED
:
2745 * This state should not last for more than 2 seconds
2747 max_wait
= MEGASAS_RESET_WAIT_TIME
;
2748 cur_state
= MFI_STATE_UNDEFINED
;
2751 case MFI_STATE_BB_INIT
:
2752 max_wait
= MEGASAS_RESET_WAIT_TIME
;
2753 cur_state
= MFI_STATE_BB_INIT
;
2756 case MFI_STATE_FW_INIT
:
2757 max_wait
= MEGASAS_RESET_WAIT_TIME
;
2758 cur_state
= MFI_STATE_FW_INIT
;
2761 case MFI_STATE_FW_INIT_2
:
2762 max_wait
= MEGASAS_RESET_WAIT_TIME
;
2763 cur_state
= MFI_STATE_FW_INIT_2
;
2766 case MFI_STATE_DEVICE_SCAN
:
2767 max_wait
= MEGASAS_RESET_WAIT_TIME
;
2768 cur_state
= MFI_STATE_DEVICE_SCAN
;
2771 case MFI_STATE_FLUSH_CACHE
:
2772 max_wait
= MEGASAS_RESET_WAIT_TIME
;
2773 cur_state
= MFI_STATE_FLUSH_CACHE
;
2777 printk(KERN_DEBUG
"megasas: Unknown state 0x%x\n",
2783 * The cur_state should not last for more than max_wait secs
2785 for (i
= 0; i
< (max_wait
* 1000); i
++) {
2786 fw_state
= instance
->instancet
->read_fw_status_reg(instance
->reg_set
) &
2789 instance
->instancet
->read_fw_status_reg(instance
->reg_set
);
2791 if (abs_state
== curr_abs_state
) {
2798 * Return error if fw_state hasn't changed after max_wait
2800 if (curr_abs_state
== abs_state
) {
2801 printk(KERN_DEBUG
"FW state [%d] hasn't changed "
2802 "in %d secs\n", fw_state
, max_wait
);
2806 printk(KERN_INFO
"megasas: FW now in Ready state\n");
2812 * megasas_teardown_frame_pool - Destroy the cmd frame DMA pool
2813 * @instance: Adapter soft state
2815 static void megasas_teardown_frame_pool(struct megasas_instance
*instance
)
2818 u32 max_cmd
= instance
->max_mfi_cmds
;
2819 struct megasas_cmd
*cmd
;
2821 if (!instance
->frame_dma_pool
)
2825 * Return all frames to pool
2827 for (i
= 0; i
< max_cmd
; i
++) {
2829 cmd
= instance
->cmd_list
[i
];
2832 pci_pool_free(instance
->frame_dma_pool
, cmd
->frame
,
2833 cmd
->frame_phys_addr
);
2836 pci_pool_free(instance
->sense_dma_pool
, cmd
->sense
,
2837 cmd
->sense_phys_addr
);
2841 * Now destroy the pool itself
2843 pci_pool_destroy(instance
->frame_dma_pool
);
2844 pci_pool_destroy(instance
->sense_dma_pool
);
2846 instance
->frame_dma_pool
= NULL
;
2847 instance
->sense_dma_pool
= NULL
;
2851 * megasas_create_frame_pool - Creates DMA pool for cmd frames
2852 * @instance: Adapter soft state
2854 * Each command packet has an embedded DMA memory buffer that is used for
2855 * filling MFI frame and the SG list that immediately follows the frame. This
2856 * function creates those DMA memory buffers for each command packet by using
2857 * PCI pool facility.
2859 static int megasas_create_frame_pool(struct megasas_instance
*instance
)
2867 struct megasas_cmd
*cmd
;
2869 max_cmd
= instance
->max_mfi_cmds
;
2872 * Size of our frame is 64 bytes for MFI frame, followed by max SG
2873 * elements and finally SCSI_SENSE_BUFFERSIZE bytes for sense buffer
2875 sge_sz
= (IS_DMA64
) ? sizeof(struct megasas_sge64
) :
2876 sizeof(struct megasas_sge32
);
2878 if (instance
->flag_ieee
) {
2879 sge_sz
= sizeof(struct megasas_sge_skinny
);
2883 * Calculated the number of 64byte frames required for SGL
2885 sgl_sz
= sge_sz
* instance
->max_num_sge
;
2886 frame_count
= (sgl_sz
+ MEGAMFI_FRAME_SIZE
- 1) / MEGAMFI_FRAME_SIZE
;
2890 * We need one extra frame for the MFI command
2894 total_sz
= MEGAMFI_FRAME_SIZE
* frame_count
;
2896 * Use DMA pool facility provided by PCI layer
2898 instance
->frame_dma_pool
= pci_pool_create("megasas frame pool",
2899 instance
->pdev
, total_sz
, 64,
2902 if (!instance
->frame_dma_pool
) {
2903 printk(KERN_DEBUG
"megasas: failed to setup frame pool\n");
2907 instance
->sense_dma_pool
= pci_pool_create("megasas sense pool",
2908 instance
->pdev
, 128, 4, 0);
2910 if (!instance
->sense_dma_pool
) {
2911 printk(KERN_DEBUG
"megasas: failed to setup sense pool\n");
2913 pci_pool_destroy(instance
->frame_dma_pool
);
2914 instance
->frame_dma_pool
= NULL
;
2920 * Allocate and attach a frame to each of the commands in cmd_list.
2921 * By making cmd->index as the context instead of the &cmd, we can
2922 * always use 32bit context regardless of the architecture
2924 for (i
= 0; i
< max_cmd
; i
++) {
2926 cmd
= instance
->cmd_list
[i
];
2928 cmd
->frame
= pci_pool_alloc(instance
->frame_dma_pool
,
2929 GFP_KERNEL
, &cmd
->frame_phys_addr
);
2931 cmd
->sense
= pci_pool_alloc(instance
->sense_dma_pool
,
2932 GFP_KERNEL
, &cmd
->sense_phys_addr
);
2935 * megasas_teardown_frame_pool() takes care of freeing
2936 * whatever has been allocated
2938 if (!cmd
->frame
|| !cmd
->sense
) {
2939 printk(KERN_DEBUG
"megasas: pci_pool_alloc failed \n");
2940 megasas_teardown_frame_pool(instance
);
2944 memset(cmd
->frame
, 0, total_sz
);
2945 cmd
->frame
->io
.context
= cmd
->index
;
2946 cmd
->frame
->io
.pad_0
= 0;
2947 if ((instance
->pdev
->device
!= PCI_DEVICE_ID_LSI_FUSION
) &&
2948 (instance
->pdev
->device
!= PCI_DEVICE_ID_LSI_INVADER
) &&
2950 cmd
->frame
->hdr
.cmd
= MFI_CMD_INVALID
;
2957 * megasas_free_cmds - Free all the cmds in the free cmd pool
2958 * @instance: Adapter soft state
2960 void megasas_free_cmds(struct megasas_instance
*instance
)
2963 /* First free the MFI frame pool */
2964 megasas_teardown_frame_pool(instance
);
2966 /* Free all the commands in the cmd_list */
2967 for (i
= 0; i
< instance
->max_mfi_cmds
; i
++)
2969 kfree(instance
->cmd_list
[i
]);
2971 /* Free the cmd_list buffer itself */
2972 kfree(instance
->cmd_list
);
2973 instance
->cmd_list
= NULL
;
2975 INIT_LIST_HEAD(&instance
->cmd_pool
);
2979 * megasas_alloc_cmds - Allocates the command packets
2980 * @instance: Adapter soft state
2982 * Each command that is issued to the FW, whether IO commands from the OS or
2983 * internal commands like IOCTLs, are wrapped in local data structure called
2984 * megasas_cmd. The frame embedded in this megasas_cmd is actually issued to
2987 * Each frame has a 32-bit field called context (tag). This context is used
2988 * to get back the megasas_cmd from the frame when a frame gets completed in
2989 * the ISR. Typically the address of the megasas_cmd itself would be used as
2990 * the context. But we wanted to keep the differences between 32 and 64 bit
2991 * systems to the mininum. We always use 32 bit integers for the context. In
2992 * this driver, the 32 bit values are the indices into an array cmd_list.
2993 * This array is used only to look up the megasas_cmd given the context. The
2994 * free commands themselves are maintained in a linked list called cmd_pool.
2996 int megasas_alloc_cmds(struct megasas_instance
*instance
)
3001 struct megasas_cmd
*cmd
;
3003 max_cmd
= instance
->max_mfi_cmds
;
3006 * instance->cmd_list is an array of struct megasas_cmd pointers.
3007 * Allocate the dynamic array first and then allocate individual
3010 instance
->cmd_list
= kcalloc(max_cmd
, sizeof(struct megasas_cmd
*), GFP_KERNEL
);
3012 if (!instance
->cmd_list
) {
3013 printk(KERN_DEBUG
"megasas: out of memory\n");
3017 memset(instance
->cmd_list
, 0, sizeof(struct megasas_cmd
*) *max_cmd
);
3019 for (i
= 0; i
< max_cmd
; i
++) {
3020 instance
->cmd_list
[i
] = kmalloc(sizeof(struct megasas_cmd
),
3023 if (!instance
->cmd_list
[i
]) {
3025 for (j
= 0; j
< i
; j
++)
3026 kfree(instance
->cmd_list
[j
]);
3028 kfree(instance
->cmd_list
);
3029 instance
->cmd_list
= NULL
;
3036 * Add all the commands to command pool (instance->cmd_pool)
3038 for (i
= 0; i
< max_cmd
; i
++) {
3039 cmd
= instance
->cmd_list
[i
];
3040 memset(cmd
, 0, sizeof(struct megasas_cmd
));
3043 cmd
->instance
= instance
;
3045 list_add_tail(&cmd
->list
, &instance
->cmd_pool
);
3049 * Create a frame pool and assign one frame to each cmd
3051 if (megasas_create_frame_pool(instance
)) {
3052 printk(KERN_DEBUG
"megasas: Error creating frame DMA pool\n");
3053 megasas_free_cmds(instance
);
3060 * megasas_get_pd_list_info - Returns FW's pd_list structure
3061 * @instance: Adapter soft state
3062 * @pd_list: pd_list structure
3064 * Issues an internal command (DCMD) to get the FW's controller PD
3065 * list structure. This information is mainly used to find out SYSTEM
3066 * supported by the FW.
3069 megasas_get_pd_list(struct megasas_instance
*instance
)
3071 int ret
= 0, pd_index
= 0;
3072 struct megasas_cmd
*cmd
;
3073 struct megasas_dcmd_frame
*dcmd
;
3074 struct MR_PD_LIST
*ci
;
3075 struct MR_PD_ADDRESS
*pd_addr
;
3076 dma_addr_t ci_h
= 0;
3078 cmd
= megasas_get_cmd(instance
);
3081 printk(KERN_DEBUG
"megasas (get_pd_list): Failed to get cmd\n");
3085 dcmd
= &cmd
->frame
->dcmd
;
3087 ci
= pci_alloc_consistent(instance
->pdev
,
3088 MEGASAS_MAX_PD
* sizeof(struct MR_PD_LIST
), &ci_h
);
3091 printk(KERN_DEBUG
"Failed to alloc mem for pd_list\n");
3092 megasas_return_cmd(instance
, cmd
);
3096 memset(ci
, 0, sizeof(*ci
));
3097 memset(dcmd
->mbox
.b
, 0, MFI_MBOX_SIZE
);
3099 dcmd
->mbox
.b
[0] = MR_PD_QUERY_TYPE_EXPOSED_TO_HOST
;
3100 dcmd
->mbox
.b
[1] = 0;
3101 dcmd
->cmd
= MFI_CMD_DCMD
;
3102 dcmd
->cmd_status
= 0xFF;
3103 dcmd
->sge_count
= 1;
3104 dcmd
->flags
= MFI_FRAME_DIR_READ
;
3107 dcmd
->data_xfer_len
= MEGASAS_MAX_PD
* sizeof(struct MR_PD_LIST
);
3108 dcmd
->opcode
= MR_DCMD_PD_LIST_QUERY
;
3109 dcmd
->sgl
.sge32
[0].phys_addr
= ci_h
;
3110 dcmd
->sgl
.sge32
[0].length
= MEGASAS_MAX_PD
* sizeof(struct MR_PD_LIST
);
3112 if (!megasas_issue_polled(instance
, cmd
)) {
3119 * the following function will get the instance PD LIST.
3126 (MEGASAS_MAX_PD_CHANNELS
* MEGASAS_MAX_DEV_PER_CHANNEL
))) {
3128 memset(instance
->pd_list
, 0,
3129 MEGASAS_MAX_PD
* sizeof(struct megasas_pd_list
));
3131 for (pd_index
= 0; pd_index
< ci
->count
; pd_index
++) {
3133 instance
->pd_list
[pd_addr
->deviceId
].tid
=
3135 instance
->pd_list
[pd_addr
->deviceId
].driveType
=
3136 pd_addr
->scsiDevType
;
3137 instance
->pd_list
[pd_addr
->deviceId
].driveState
=
3143 pci_free_consistent(instance
->pdev
,
3144 MEGASAS_MAX_PD
* sizeof(struct MR_PD_LIST
),
3146 megasas_return_cmd(instance
, cmd
);
3152 * megasas_get_ld_list_info - Returns FW's ld_list structure
3153 * @instance: Adapter soft state
3154 * @ld_list: ld_list structure
3156 * Issues an internal command (DCMD) to get the FW's controller PD
3157 * list structure. This information is mainly used to find out SYSTEM
3158 * supported by the FW.
3161 megasas_get_ld_list(struct megasas_instance
*instance
)
3163 int ret
= 0, ld_index
= 0, ids
= 0;
3164 struct megasas_cmd
*cmd
;
3165 struct megasas_dcmd_frame
*dcmd
;
3166 struct MR_LD_LIST
*ci
;
3167 dma_addr_t ci_h
= 0;
3169 cmd
= megasas_get_cmd(instance
);
3172 printk(KERN_DEBUG
"megasas_get_ld_list: Failed to get cmd\n");
3176 dcmd
= &cmd
->frame
->dcmd
;
3178 ci
= pci_alloc_consistent(instance
->pdev
,
3179 sizeof(struct MR_LD_LIST
),
3183 printk(KERN_DEBUG
"Failed to alloc mem in get_ld_list\n");
3184 megasas_return_cmd(instance
, cmd
);
3188 memset(ci
, 0, sizeof(*ci
));
3189 memset(dcmd
->mbox
.b
, 0, MFI_MBOX_SIZE
);
3191 dcmd
->cmd
= MFI_CMD_DCMD
;
3192 dcmd
->cmd_status
= 0xFF;
3193 dcmd
->sge_count
= 1;
3194 dcmd
->flags
= MFI_FRAME_DIR_READ
;
3196 dcmd
->data_xfer_len
= sizeof(struct MR_LD_LIST
);
3197 dcmd
->opcode
= MR_DCMD_LD_GET_LIST
;
3198 dcmd
->sgl
.sge32
[0].phys_addr
= ci_h
;
3199 dcmd
->sgl
.sge32
[0].length
= sizeof(struct MR_LD_LIST
);
3202 if (!megasas_issue_polled(instance
, cmd
)) {
3208 /* the following function will get the instance PD LIST */
3210 if ((ret
== 0) && (ci
->ldCount
<= MAX_LOGICAL_DRIVES
)) {
3211 memset(instance
->ld_ids
, 0xff, MEGASAS_MAX_LD_IDS
);
3213 for (ld_index
= 0; ld_index
< ci
->ldCount
; ld_index
++) {
3214 if (ci
->ldList
[ld_index
].state
!= 0) {
3215 ids
= ci
->ldList
[ld_index
].ref
.targetId
;
3216 instance
->ld_ids
[ids
] =
3217 ci
->ldList
[ld_index
].ref
.targetId
;
3222 pci_free_consistent(instance
->pdev
,
3223 sizeof(struct MR_LD_LIST
),
3227 megasas_return_cmd(instance
, cmd
);
3232 * megasas_get_controller_info - Returns FW's controller structure
3233 * @instance: Adapter soft state
3234 * @ctrl_info: Controller information structure
3236 * Issues an internal command (DCMD) to get the FW's controller structure.
3237 * This information is mainly used to find out the maximum IO transfer per
3238 * command supported by the FW.
3241 megasas_get_ctrl_info(struct megasas_instance
*instance
,
3242 struct megasas_ctrl_info
*ctrl_info
)
3245 struct megasas_cmd
*cmd
;
3246 struct megasas_dcmd_frame
*dcmd
;
3247 struct megasas_ctrl_info
*ci
;
3248 dma_addr_t ci_h
= 0;
3250 cmd
= megasas_get_cmd(instance
);
3253 printk(KERN_DEBUG
"megasas: Failed to get a free cmd\n");
3257 dcmd
= &cmd
->frame
->dcmd
;
3259 ci
= pci_alloc_consistent(instance
->pdev
,
3260 sizeof(struct megasas_ctrl_info
), &ci_h
);
3263 printk(KERN_DEBUG
"Failed to alloc mem for ctrl info\n");
3264 megasas_return_cmd(instance
, cmd
);
3268 memset(ci
, 0, sizeof(*ci
));
3269 memset(dcmd
->mbox
.b
, 0, MFI_MBOX_SIZE
);
3271 dcmd
->cmd
= MFI_CMD_DCMD
;
3272 dcmd
->cmd_status
= 0xFF;
3273 dcmd
->sge_count
= 1;
3274 dcmd
->flags
= MFI_FRAME_DIR_READ
;
3277 dcmd
->data_xfer_len
= sizeof(struct megasas_ctrl_info
);
3278 dcmd
->opcode
= MR_DCMD_CTRL_GET_INFO
;
3279 dcmd
->sgl
.sge32
[0].phys_addr
= ci_h
;
3280 dcmd
->sgl
.sge32
[0].length
= sizeof(struct megasas_ctrl_info
);
3282 if (!megasas_issue_polled(instance
, cmd
)) {
3284 memcpy(ctrl_info
, ci
, sizeof(struct megasas_ctrl_info
));
3289 pci_free_consistent(instance
->pdev
, sizeof(struct megasas_ctrl_info
),
3292 megasas_return_cmd(instance
, cmd
);
3297 * megasas_issue_init_mfi - Initializes the FW
3298 * @instance: Adapter soft state
3300 * Issues the INIT MFI cmd
3303 megasas_issue_init_mfi(struct megasas_instance
*instance
)
3307 struct megasas_cmd
*cmd
;
3309 struct megasas_init_frame
*init_frame
;
3310 struct megasas_init_queue_info
*initq_info
;
3311 dma_addr_t init_frame_h
;
3312 dma_addr_t initq_info_h
;
3315 * Prepare a init frame. Note the init frame points to queue info
3316 * structure. Each frame has SGL allocated after first 64 bytes. For
3317 * this frame - since we don't need any SGL - we use SGL's space as
3318 * queue info structure
3320 * We will not get a NULL command below. We just created the pool.
3322 cmd
= megasas_get_cmd(instance
);
3324 init_frame
= (struct megasas_init_frame
*)cmd
->frame
;
3325 initq_info
= (struct megasas_init_queue_info
*)
3326 ((unsigned long)init_frame
+ 64);
3328 init_frame_h
= cmd
->frame_phys_addr
;
3329 initq_info_h
= init_frame_h
+ 64;
3331 context
= init_frame
->context
;
3332 memset(init_frame
, 0, MEGAMFI_FRAME_SIZE
);
3333 memset(initq_info
, 0, sizeof(struct megasas_init_queue_info
));
3334 init_frame
->context
= context
;
3336 initq_info
->reply_queue_entries
= instance
->max_fw_cmds
+ 1;
3337 initq_info
->reply_queue_start_phys_addr_lo
= instance
->reply_queue_h
;
3339 initq_info
->producer_index_phys_addr_lo
= instance
->producer_h
;
3340 initq_info
->consumer_index_phys_addr_lo
= instance
->consumer_h
;
3342 init_frame
->cmd
= MFI_CMD_INIT
;
3343 init_frame
->cmd_status
= 0xFF;
3344 init_frame
->queue_info_new_phys_addr_lo
= initq_info_h
;
3346 init_frame
->data_xfer_len
= sizeof(struct megasas_init_queue_info
);
3349 * disable the intr before firing the init frame to FW
3351 instance
->instancet
->disable_intr(instance
->reg_set
);
3354 * Issue the init frame in polled mode
3357 if (megasas_issue_polled(instance
, cmd
)) {
3358 printk(KERN_ERR
"megasas: Failed to init firmware\n");
3359 megasas_return_cmd(instance
, cmd
);
3363 megasas_return_cmd(instance
, cmd
);
3372 megasas_init_adapter_mfi(struct megasas_instance
*instance
)
3374 struct megasas_register_set __iomem
*reg_set
;
3378 reg_set
= instance
->reg_set
;
3381 * Get various operational parameters from status register
3383 instance
->max_fw_cmds
= instance
->instancet
->read_fw_status_reg(reg_set
) & 0x00FFFF;
3385 * Reduce the max supported cmds by 1. This is to ensure that the
3386 * reply_q_sz (1 more than the max cmd that driver may send)
3387 * does not exceed max cmds that the FW can support
3389 instance
->max_fw_cmds
= instance
->max_fw_cmds
-1;
3390 instance
->max_mfi_cmds
= instance
->max_fw_cmds
;
3391 instance
->max_num_sge
= (instance
->instancet
->read_fw_status_reg(reg_set
) & 0xFF0000) >>
3394 * Create a pool of commands
3396 if (megasas_alloc_cmds(instance
))
3397 goto fail_alloc_cmds
;
3400 * Allocate memory for reply queue. Length of reply queue should
3401 * be _one_ more than the maximum commands handled by the firmware.
3403 * Note: When FW completes commands, it places corresponding contex
3404 * values in this circular reply queue. This circular queue is a fairly
3405 * typical producer-consumer queue. FW is the producer (of completed
3406 * commands) and the driver is the consumer.
3408 context_sz
= sizeof(u32
);
3409 reply_q_sz
= context_sz
* (instance
->max_fw_cmds
+ 1);
3411 instance
->reply_queue
= pci_alloc_consistent(instance
->pdev
,
3413 &instance
->reply_queue_h
);
3415 if (!instance
->reply_queue
) {
3416 printk(KERN_DEBUG
"megasas: Out of DMA mem for reply queue\n");
3417 goto fail_reply_queue
;
3420 if (megasas_issue_init_mfi(instance
))
3423 instance
->fw_support_ieee
= 0;
3424 instance
->fw_support_ieee
=
3425 (instance
->instancet
->read_fw_status_reg(reg_set
) &
3428 printk(KERN_NOTICE
"megasas_init_mfi: fw_support_ieee=%d",
3429 instance
->fw_support_ieee
);
3431 if (instance
->fw_support_ieee
)
3432 instance
->flag_ieee
= 1;
3438 pci_free_consistent(instance
->pdev
, reply_q_sz
,
3439 instance
->reply_queue
, instance
->reply_queue_h
);
3441 megasas_free_cmds(instance
);
3448 * megasas_init_fw - Initializes the FW
3449 * @instance: Adapter soft state
3451 * This is the main function for initializing firmware
3454 static int megasas_init_fw(struct megasas_instance
*instance
)
3458 u32 tmp_sectors
, msix_enable
;
3459 struct megasas_register_set __iomem
*reg_set
;
3460 struct megasas_ctrl_info
*ctrl_info
;
3461 unsigned long bar_list
;
3464 /* Find first memory bar */
3465 bar_list
= pci_select_bars(instance
->pdev
, IORESOURCE_MEM
);
3466 instance
->bar
= find_first_bit(&bar_list
, sizeof(unsigned long));
3467 instance
->base_addr
= pci_resource_start(instance
->pdev
, instance
->bar
);
3468 if (pci_request_selected_regions(instance
->pdev
, instance
->bar
,
3470 printk(KERN_DEBUG
"megasas: IO memory region busy!\n");
3474 instance
->reg_set
= ioremap_nocache(instance
->base_addr
, 8192);
3476 if (!instance
->reg_set
) {
3477 printk(KERN_DEBUG
"megasas: Failed to map IO mem\n");
3481 reg_set
= instance
->reg_set
;
3483 switch (instance
->pdev
->device
) {
3484 case PCI_DEVICE_ID_LSI_FUSION
:
3485 case PCI_DEVICE_ID_LSI_INVADER
:
3486 instance
->instancet
= &megasas_instance_template_fusion
;
3488 case PCI_DEVICE_ID_LSI_SAS1078R
:
3489 case PCI_DEVICE_ID_LSI_SAS1078DE
:
3490 instance
->instancet
= &megasas_instance_template_ppc
;
3492 case PCI_DEVICE_ID_LSI_SAS1078GEN2
:
3493 case PCI_DEVICE_ID_LSI_SAS0079GEN2
:
3494 instance
->instancet
= &megasas_instance_template_gen2
;
3496 case PCI_DEVICE_ID_LSI_SAS0073SKINNY
:
3497 case PCI_DEVICE_ID_LSI_SAS0071SKINNY
:
3498 instance
->instancet
= &megasas_instance_template_skinny
;
3500 case PCI_DEVICE_ID_LSI_SAS1064R
:
3501 case PCI_DEVICE_ID_DELL_PERC5
:
3503 instance
->instancet
= &megasas_instance_template_xscale
;
3508 * We expect the FW state to be READY
3510 if (megasas_transition_to_ready(instance
, 0))
3511 goto fail_ready_state
;
3513 /* Check if MSI-X is supported while in ready state */
3514 msix_enable
= (instance
->instancet
->read_fw_status_reg(reg_set
) &
3516 if (msix_enable
&& !msix_disable
) {
3517 /* Check max MSI-X vectors */
3518 if ((instance
->pdev
->device
== PCI_DEVICE_ID_LSI_FUSION
) ||
3519 (instance
->pdev
->device
== PCI_DEVICE_ID_LSI_INVADER
)) {
3520 instance
->msix_vectors
= (readl(&instance
->reg_set
->
3521 outbound_scratch_pad_2
3524 instance
->msix_vectors
= 1;
3525 /* Don't bother allocating more MSI-X vectors than cpus */
3526 instance
->msix_vectors
= min(instance
->msix_vectors
,
3527 (unsigned int)num_online_cpus());
3528 for (i
= 0; i
< instance
->msix_vectors
; i
++)
3529 instance
->msixentry
[i
].entry
= i
;
3530 i
= pci_enable_msix(instance
->pdev
, instance
->msixentry
,
3531 instance
->msix_vectors
);
3534 if (!pci_enable_msix(instance
->pdev
,
3535 instance
->msixentry
, i
))
3536 instance
->msix_vectors
= i
;
3538 instance
->msix_vectors
= 0;
3541 instance
->msix_vectors
= 0;
3544 /* Get operational params, sge flags, send init cmd to controller */
3545 if (instance
->instancet
->init_adapter(instance
))
3546 goto fail_init_adapter
;
3548 printk(KERN_ERR
"megasas: INIT adapter done\n");
3551 * the following function will get the PD LIST.
3554 memset(instance
->pd_list
, 0 ,
3555 (MEGASAS_MAX_PD
* sizeof(struct megasas_pd_list
)));
3556 megasas_get_pd_list(instance
);
3558 memset(instance
->ld_ids
, 0xff, MEGASAS_MAX_LD_IDS
);
3559 megasas_get_ld_list(instance
);
3561 ctrl_info
= kmalloc(sizeof(struct megasas_ctrl_info
), GFP_KERNEL
);
3564 * Compute the max allowed sectors per IO: The controller info has two
3565 * limits on max sectors. Driver should use the minimum of these two.
3567 * 1 << stripe_sz_ops.min = max sectors per strip
3569 * Note that older firmwares ( < FW ver 30) didn't report information
3570 * to calculate max_sectors_1. So the number ended up as zero always.
3573 if (ctrl_info
&& !megasas_get_ctrl_info(instance
, ctrl_info
)) {
3575 max_sectors_1
= (1 << ctrl_info
->stripe_sz_ops
.min
) *
3576 ctrl_info
->max_strips_per_io
;
3577 max_sectors_2
= ctrl_info
->max_request_size
;
3579 tmp_sectors
= min_t(u32
, max_sectors_1
, max_sectors_2
);
3580 instance
->disableOnlineCtrlReset
=
3581 ctrl_info
->properties
.OnOffProperties
.disableOnlineCtrlReset
;
3584 instance
->max_sectors_per_req
= instance
->max_num_sge
*
3586 if (tmp_sectors
&& (instance
->max_sectors_per_req
> tmp_sectors
))
3587 instance
->max_sectors_per_req
= tmp_sectors
;
3591 /* Check for valid throttlequeuedepth module parameter */
3592 if (instance
->pdev
->device
== PCI_DEVICE_ID_LSI_SAS0073SKINNY
||
3593 instance
->pdev
->device
== PCI_DEVICE_ID_LSI_SAS0071SKINNY
) {
3594 if (throttlequeuedepth
> (instance
->max_fw_cmds
-
3595 MEGASAS_SKINNY_INT_CMDS
))
3596 instance
->throttlequeuedepth
=
3597 MEGASAS_THROTTLE_QUEUE_DEPTH
;
3599 instance
->throttlequeuedepth
= throttlequeuedepth
;
3601 if (throttlequeuedepth
> (instance
->max_fw_cmds
-
3603 instance
->throttlequeuedepth
=
3604 MEGASAS_THROTTLE_QUEUE_DEPTH
;
3606 instance
->throttlequeuedepth
= throttlequeuedepth
;
3610 * Setup tasklet for cmd completion
3613 tasklet_init(&instance
->isr_tasklet
, instance
->instancet
->tasklet
,
3614 (unsigned long)instance
);
3620 iounmap(instance
->reg_set
);
3623 pci_release_selected_regions(instance
->pdev
, instance
->bar
);
3629 * megasas_release_mfi - Reverses the FW initialization
3630 * @intance: Adapter soft state
3632 static void megasas_release_mfi(struct megasas_instance
*instance
)
3634 u32 reply_q_sz
= sizeof(u32
) *(instance
->max_mfi_cmds
+ 1);
3636 if (instance
->reply_queue
)
3637 pci_free_consistent(instance
->pdev
, reply_q_sz
,
3638 instance
->reply_queue
, instance
->reply_queue_h
);
3640 megasas_free_cmds(instance
);
3642 iounmap(instance
->reg_set
);
3644 pci_release_selected_regions(instance
->pdev
, instance
->bar
);
3648 * megasas_get_seq_num - Gets latest event sequence numbers
3649 * @instance: Adapter soft state
3650 * @eli: FW event log sequence numbers information
3652 * FW maintains a log of all events in a non-volatile area. Upper layers would
3653 * usually find out the latest sequence number of the events, the seq number at
3654 * the boot etc. They would "read" all the events below the latest seq number
3655 * by issuing a direct fw cmd (DCMD). For the future events (beyond latest seq
3656 * number), they would subsribe to AEN (asynchronous event notification) and
3657 * wait for the events to happen.
3660 megasas_get_seq_num(struct megasas_instance
*instance
,
3661 struct megasas_evt_log_info
*eli
)
3663 struct megasas_cmd
*cmd
;
3664 struct megasas_dcmd_frame
*dcmd
;
3665 struct megasas_evt_log_info
*el_info
;
3666 dma_addr_t el_info_h
= 0;
3668 cmd
= megasas_get_cmd(instance
);
3674 dcmd
= &cmd
->frame
->dcmd
;
3675 el_info
= pci_alloc_consistent(instance
->pdev
,
3676 sizeof(struct megasas_evt_log_info
),
3680 megasas_return_cmd(instance
, cmd
);
3684 memset(el_info
, 0, sizeof(*el_info
));
3685 memset(dcmd
->mbox
.b
, 0, MFI_MBOX_SIZE
);
3687 dcmd
->cmd
= MFI_CMD_DCMD
;
3688 dcmd
->cmd_status
= 0x0;
3689 dcmd
->sge_count
= 1;
3690 dcmd
->flags
= MFI_FRAME_DIR_READ
;
3693 dcmd
->data_xfer_len
= sizeof(struct megasas_evt_log_info
);
3694 dcmd
->opcode
= MR_DCMD_CTRL_EVENT_GET_INFO
;
3695 dcmd
->sgl
.sge32
[0].phys_addr
= el_info_h
;
3696 dcmd
->sgl
.sge32
[0].length
= sizeof(struct megasas_evt_log_info
);
3698 megasas_issue_blocked_cmd(instance
, cmd
);
3701 * Copy the data back into callers buffer
3703 memcpy(eli
, el_info
, sizeof(struct megasas_evt_log_info
));
3705 pci_free_consistent(instance
->pdev
, sizeof(struct megasas_evt_log_info
),
3706 el_info
, el_info_h
);
3708 megasas_return_cmd(instance
, cmd
);
3714 * megasas_register_aen - Registers for asynchronous event notification
3715 * @instance: Adapter soft state
3716 * @seq_num: The starting sequence number
3717 * @class_locale: Class of the event
3719 * This function subscribes for AEN for events beyond the @seq_num. It requests
3720 * to be notified if and only if the event is of type @class_locale
3723 megasas_register_aen(struct megasas_instance
*instance
, u32 seq_num
,
3724 u32 class_locale_word
)
3727 struct megasas_cmd
*cmd
;
3728 struct megasas_dcmd_frame
*dcmd
;
3729 union megasas_evt_class_locale curr_aen
;
3730 union megasas_evt_class_locale prev_aen
;
3733 * If there an AEN pending already (aen_cmd), check if the
3734 * class_locale of that pending AEN is inclusive of the new
3735 * AEN request we currently have. If it is, then we don't have
3736 * to do anything. In other words, whichever events the current
3737 * AEN request is subscribing to, have already been subscribed
3740 * If the old_cmd is _not_ inclusive, then we have to abort
3741 * that command, form a class_locale that is superset of both
3742 * old and current and re-issue to the FW
3745 curr_aen
.word
= class_locale_word
;
3747 if (instance
->aen_cmd
) {
3749 prev_aen
.word
= instance
->aen_cmd
->frame
->dcmd
.mbox
.w
[1];
3752 * A class whose enum value is smaller is inclusive of all
3753 * higher values. If a PROGRESS (= -1) was previously
3754 * registered, then a new registration requests for higher
3755 * classes need not be sent to FW. They are automatically
3758 * Locale numbers don't have such hierarchy. They are bitmap
3761 if ((prev_aen
.members
.class <= curr_aen
.members
.class) &&
3762 !((prev_aen
.members
.locale
& curr_aen
.members
.locale
) ^
3763 curr_aen
.members
.locale
)) {
3765 * Previously issued event registration includes
3766 * current request. Nothing to do.
3770 curr_aen
.members
.locale
|= prev_aen
.members
.locale
;
3772 if (prev_aen
.members
.class < curr_aen
.members
.class)
3773 curr_aen
.members
.class = prev_aen
.members
.class;
3775 instance
->aen_cmd
->abort_aen
= 1;
3776 ret_val
= megasas_issue_blocked_abort_cmd(instance
,
3781 printk(KERN_DEBUG
"megasas: Failed to abort "
3782 "previous AEN command\n");
3788 cmd
= megasas_get_cmd(instance
);
3793 dcmd
= &cmd
->frame
->dcmd
;
3795 memset(instance
->evt_detail
, 0, sizeof(struct megasas_evt_detail
));
3798 * Prepare DCMD for aen registration
3800 memset(dcmd
->mbox
.b
, 0, MFI_MBOX_SIZE
);
3802 dcmd
->cmd
= MFI_CMD_DCMD
;
3803 dcmd
->cmd_status
= 0x0;
3804 dcmd
->sge_count
= 1;
3805 dcmd
->flags
= MFI_FRAME_DIR_READ
;
3808 instance
->last_seq_num
= seq_num
;
3809 dcmd
->data_xfer_len
= sizeof(struct megasas_evt_detail
);
3810 dcmd
->opcode
= MR_DCMD_CTRL_EVENT_WAIT
;
3811 dcmd
->mbox
.w
[0] = seq_num
;
3812 dcmd
->mbox
.w
[1] = curr_aen
.word
;
3813 dcmd
->sgl
.sge32
[0].phys_addr
= (u32
) instance
->evt_detail_h
;
3814 dcmd
->sgl
.sge32
[0].length
= sizeof(struct megasas_evt_detail
);
3816 if (instance
->aen_cmd
!= NULL
) {
3817 megasas_return_cmd(instance
, cmd
);
3822 * Store reference to the cmd used to register for AEN. When an
3823 * application wants us to register for AEN, we have to abort this
3824 * cmd and re-register with a new EVENT LOCALE supplied by that app
3826 instance
->aen_cmd
= cmd
;
3829 * Issue the aen registration frame
3831 instance
->instancet
->issue_dcmd(instance
, cmd
);
3837 * megasas_start_aen - Subscribes to AEN during driver load time
3838 * @instance: Adapter soft state
3840 static int megasas_start_aen(struct megasas_instance
*instance
)
3842 struct megasas_evt_log_info eli
;
3843 union megasas_evt_class_locale class_locale
;
3846 * Get the latest sequence number from FW
3848 memset(&eli
, 0, sizeof(eli
));
3850 if (megasas_get_seq_num(instance
, &eli
))
3854 * Register AEN with FW for latest sequence number plus 1
3856 class_locale
.members
.reserved
= 0;
3857 class_locale
.members
.locale
= MR_EVT_LOCALE_ALL
;
3858 class_locale
.members
.class = MR_EVT_CLASS_DEBUG
;
3860 return megasas_register_aen(instance
, eli
.newest_seq_num
+ 1,
3865 * megasas_io_attach - Attaches this driver to SCSI mid-layer
3866 * @instance: Adapter soft state
3868 static int megasas_io_attach(struct megasas_instance
*instance
)
3870 struct Scsi_Host
*host
= instance
->host
;
3873 * Export parameters required by SCSI mid-layer
3875 host
->irq
= instance
->pdev
->irq
;
3876 host
->unique_id
= instance
->unique_id
;
3877 if ((instance
->pdev
->device
== PCI_DEVICE_ID_LSI_SAS0073SKINNY
) ||
3878 (instance
->pdev
->device
== PCI_DEVICE_ID_LSI_SAS0071SKINNY
)) {
3880 instance
->max_fw_cmds
- MEGASAS_SKINNY_INT_CMDS
;
3883 instance
->max_fw_cmds
- MEGASAS_INT_CMDS
;
3884 host
->this_id
= instance
->init_id
;
3885 host
->sg_tablesize
= instance
->max_num_sge
;
3887 if (instance
->fw_support_ieee
)
3888 instance
->max_sectors_per_req
= MEGASAS_MAX_SECTORS_IEEE
;
3891 * Check if the module parameter value for max_sectors can be used
3893 if (max_sectors
&& max_sectors
< instance
->max_sectors_per_req
)
3894 instance
->max_sectors_per_req
= max_sectors
;
3897 if (((instance
->pdev
->device
==
3898 PCI_DEVICE_ID_LSI_SAS1078GEN2
) ||
3899 (instance
->pdev
->device
==
3900 PCI_DEVICE_ID_LSI_SAS0079GEN2
)) &&
3901 (max_sectors
<= MEGASAS_MAX_SECTORS
)) {
3902 instance
->max_sectors_per_req
= max_sectors
;
3904 printk(KERN_INFO
"megasas: max_sectors should be > 0"
3905 "and <= %d (or < 1MB for GEN2 controller)\n",
3906 instance
->max_sectors_per_req
);
3911 host
->max_sectors
= instance
->max_sectors_per_req
;
3912 host
->cmd_per_lun
= MEGASAS_DEFAULT_CMD_PER_LUN
;
3913 host
->max_channel
= MEGASAS_MAX_CHANNELS
- 1;
3914 host
->max_id
= MEGASAS_MAX_DEV_PER_CHANNEL
;
3915 host
->max_lun
= MEGASAS_MAX_LUN
;
3916 host
->max_cmd_len
= 16;
3918 /* Fusion only supports host reset */
3919 if ((instance
->pdev
->device
== PCI_DEVICE_ID_LSI_FUSION
) ||
3920 (instance
->pdev
->device
== PCI_DEVICE_ID_LSI_INVADER
)) {
3921 host
->hostt
->eh_device_reset_handler
= NULL
;
3922 host
->hostt
->eh_bus_reset_handler
= NULL
;
3926 * Notify the mid-layer about the new controller
3928 if (scsi_add_host(host
, &instance
->pdev
->dev
)) {
3929 printk(KERN_DEBUG
"megasas: scsi_add_host failed\n");
3934 * Trigger SCSI to scan our drives
3936 scsi_scan_host(host
);
3941 megasas_set_dma_mask(struct pci_dev
*pdev
)
3944 * All our contollers are capable of performing 64-bit DMA
3947 if (pci_set_dma_mask(pdev
, DMA_BIT_MASK(64)) != 0) {
3949 if (pci_set_dma_mask(pdev
, DMA_BIT_MASK(32)) != 0)
3950 goto fail_set_dma_mask
;
3953 if (pci_set_dma_mask(pdev
, DMA_BIT_MASK(32)) != 0)
3954 goto fail_set_dma_mask
;
3963 * megasas_probe_one - PCI hotplug entry point
3964 * @pdev: PCI device structure
3965 * @id: PCI ids of supported hotplugged adapter
3967 static int __devinit
3968 megasas_probe_one(struct pci_dev
*pdev
, const struct pci_device_id
*id
)
3970 int rval
, pos
, i
, j
;
3971 struct Scsi_Host
*host
;
3972 struct megasas_instance
*instance
;
3975 /* Reset MSI-X in the kdump kernel */
3976 if (reset_devices
) {
3977 pos
= pci_find_capability(pdev
, PCI_CAP_ID_MSIX
);
3979 pci_read_config_word(pdev
, msi_control_reg(pos
),
3981 if (control
& PCI_MSIX_FLAGS_ENABLE
) {
3982 dev_info(&pdev
->dev
, "resetting MSI-X\n");
3983 pci_write_config_word(pdev
,
3984 msi_control_reg(pos
),
3986 ~PCI_MSIX_FLAGS_ENABLE
);
3992 * Announce PCI information
3994 printk(KERN_INFO
"megasas: %#4.04x:%#4.04x:%#4.04x:%#4.04x: ",
3995 pdev
->vendor
, pdev
->device
, pdev
->subsystem_vendor
,
3996 pdev
->subsystem_device
);
3998 printk("bus %d:slot %d:func %d\n",
3999 pdev
->bus
->number
, PCI_SLOT(pdev
->devfn
), PCI_FUNC(pdev
->devfn
));
4002 * PCI prepping: enable device set bus mastering and dma mask
4004 rval
= pci_enable_device_mem(pdev
);
4010 pci_set_master(pdev
);
4012 if (megasas_set_dma_mask(pdev
))
4013 goto fail_set_dma_mask
;
4015 host
= scsi_host_alloc(&megasas_template
,
4016 sizeof(struct megasas_instance
));
4019 printk(KERN_DEBUG
"megasas: scsi_host_alloc failed\n");
4020 goto fail_alloc_instance
;
4023 instance
= (struct megasas_instance
*)host
->hostdata
;
4024 memset(instance
, 0, sizeof(*instance
));
4025 atomic_set( &instance
->fw_reset_no_pci_access
, 0 );
4026 instance
->pdev
= pdev
;
4028 switch (instance
->pdev
->device
) {
4029 case PCI_DEVICE_ID_LSI_FUSION
:
4030 case PCI_DEVICE_ID_LSI_INVADER
:
4032 struct fusion_context
*fusion
;
4034 instance
->ctrl_context
=
4035 kzalloc(sizeof(struct fusion_context
), GFP_KERNEL
);
4036 if (!instance
->ctrl_context
) {
4037 printk(KERN_DEBUG
"megasas: Failed to allocate "
4038 "memory for Fusion context info\n");
4039 goto fail_alloc_dma_buf
;
4041 fusion
= instance
->ctrl_context
;
4042 INIT_LIST_HEAD(&fusion
->cmd_pool
);
4043 spin_lock_init(&fusion
->cmd_pool_lock
);
4046 default: /* For all other supported controllers */
4048 instance
->producer
=
4049 pci_alloc_consistent(pdev
, sizeof(u32
),
4050 &instance
->producer_h
);
4051 instance
->consumer
=
4052 pci_alloc_consistent(pdev
, sizeof(u32
),
4053 &instance
->consumer_h
);
4055 if (!instance
->producer
|| !instance
->consumer
) {
4056 printk(KERN_DEBUG
"megasas: Failed to allocate"
4057 "memory for producer, consumer\n");
4058 goto fail_alloc_dma_buf
;
4061 *instance
->producer
= 0;
4062 *instance
->consumer
= 0;
4066 megasas_poll_wait_aen
= 0;
4067 instance
->flag_ieee
= 0;
4068 instance
->ev
= NULL
;
4069 instance
->issuepend_done
= 1;
4070 instance
->adprecovery
= MEGASAS_HBA_OPERATIONAL
;
4071 megasas_poll_wait_aen
= 0;
4073 instance
->evt_detail
= pci_alloc_consistent(pdev
,
4075 megasas_evt_detail
),
4076 &instance
->evt_detail_h
);
4078 if (!instance
->evt_detail
) {
4079 printk(KERN_DEBUG
"megasas: Failed to allocate memory for "
4080 "event detail structure\n");
4081 goto fail_alloc_dma_buf
;
4085 * Initialize locks and queues
4087 INIT_LIST_HEAD(&instance
->cmd_pool
);
4088 INIT_LIST_HEAD(&instance
->internal_reset_pending_q
);
4090 atomic_set(&instance
->fw_outstanding
,0);
4092 init_waitqueue_head(&instance
->int_cmd_wait_q
);
4093 init_waitqueue_head(&instance
->abort_cmd_wait_q
);
4095 spin_lock_init(&instance
->cmd_pool_lock
);
4096 spin_lock_init(&instance
->hba_lock
);
4097 spin_lock_init(&instance
->completion_lock
);
4099 mutex_init(&instance
->aen_mutex
);
4100 mutex_init(&instance
->reset_mutex
);
4103 * Initialize PCI related and misc parameters
4105 instance
->host
= host
;
4106 instance
->unique_id
= pdev
->bus
->number
<< 8 | pdev
->devfn
;
4107 instance
->init_id
= MEGASAS_DEFAULT_INIT_ID
;
4109 if ((instance
->pdev
->device
== PCI_DEVICE_ID_LSI_SAS0073SKINNY
) ||
4110 (instance
->pdev
->device
== PCI_DEVICE_ID_LSI_SAS0071SKINNY
)) {
4111 instance
->flag_ieee
= 1;
4112 sema_init(&instance
->ioctl_sem
, MEGASAS_SKINNY_INT_CMDS
);
4114 sema_init(&instance
->ioctl_sem
, MEGASAS_INT_CMDS
);
4116 megasas_dbg_lvl
= 0;
4118 instance
->unload
= 1;
4119 instance
->last_time
= 0;
4120 instance
->disableOnlineCtrlReset
= 1;
4122 if ((instance
->pdev
->device
== PCI_DEVICE_ID_LSI_FUSION
) ||
4123 (instance
->pdev
->device
== PCI_DEVICE_ID_LSI_INVADER
))
4124 INIT_WORK(&instance
->work_init
, megasas_fusion_ocr_wq
);
4126 INIT_WORK(&instance
->work_init
, process_fw_state_change_wq
);
4129 * Initialize MFI Firmware
4131 if (megasas_init_fw(instance
))
4137 if (instance
->msix_vectors
) {
4138 for (i
= 0 ; i
< instance
->msix_vectors
; i
++) {
4139 instance
->irq_context
[i
].instance
= instance
;
4140 instance
->irq_context
[i
].MSIxIndex
= i
;
4141 if (request_irq(instance
->msixentry
[i
].vector
,
4142 instance
->instancet
->service_isr
, 0,
4144 &instance
->irq_context
[i
])) {
4145 printk(KERN_DEBUG
"megasas: Failed to "
4146 "register IRQ for vector %d.\n", i
);
4147 for (j
= 0 ; j
< i
; j
++)
4149 instance
->msixentry
[j
].vector
,
4150 &instance
->irq_context
[j
]);
4155 instance
->irq_context
[0].instance
= instance
;
4156 instance
->irq_context
[0].MSIxIndex
= 0;
4157 if (request_irq(pdev
->irq
, instance
->instancet
->service_isr
,
4158 IRQF_SHARED
, "megasas",
4159 &instance
->irq_context
[0])) {
4160 printk(KERN_DEBUG
"megasas: Failed to register IRQ\n");
4165 instance
->instancet
->enable_intr(instance
->reg_set
);
4168 * Store instance in PCI softstate
4170 pci_set_drvdata(pdev
, instance
);
4173 * Add this controller to megasas_mgmt_info structure so that it
4174 * can be exported to management applications
4176 megasas_mgmt_info
.count
++;
4177 megasas_mgmt_info
.instance
[megasas_mgmt_info
.max_index
] = instance
;
4178 megasas_mgmt_info
.max_index
++;
4181 * Register with SCSI mid-layer
4183 if (megasas_io_attach(instance
))
4184 goto fail_io_attach
;
4186 instance
->unload
= 0;
4189 * Initiate AEN (Asynchronous Event Notification)
4191 if (megasas_start_aen(instance
)) {
4192 printk(KERN_DEBUG
"megasas: start aen failed\n");
4193 goto fail_start_aen
;
4200 megasas_mgmt_info
.count
--;
4201 megasas_mgmt_info
.instance
[megasas_mgmt_info
.max_index
] = NULL
;
4202 megasas_mgmt_info
.max_index
--;
4204 pci_set_drvdata(pdev
, NULL
);
4205 instance
->instancet
->disable_intr(instance
->reg_set
);
4206 if (instance
->msix_vectors
)
4207 for (i
= 0 ; i
< instance
->msix_vectors
; i
++)
4208 free_irq(instance
->msixentry
[i
].vector
,
4209 &instance
->irq_context
[i
]);
4211 free_irq(instance
->pdev
->irq
, &instance
->irq_context
[0]);
4213 if ((instance
->pdev
->device
== PCI_DEVICE_ID_LSI_FUSION
) ||
4214 (instance
->pdev
->device
== PCI_DEVICE_ID_LSI_INVADER
))
4215 megasas_release_fusion(instance
);
4217 megasas_release_mfi(instance
);
4219 if (instance
->msix_vectors
)
4220 pci_disable_msix(instance
->pdev
);
4222 if (instance
->evt_detail
)
4223 pci_free_consistent(pdev
, sizeof(struct megasas_evt_detail
),
4224 instance
->evt_detail
,
4225 instance
->evt_detail_h
);
4227 if (instance
->producer
)
4228 pci_free_consistent(pdev
, sizeof(u32
), instance
->producer
,
4229 instance
->producer_h
);
4230 if (instance
->consumer
)
4231 pci_free_consistent(pdev
, sizeof(u32
), instance
->consumer
,
4232 instance
->consumer_h
);
4233 scsi_host_put(host
);
4235 fail_alloc_instance
:
4237 pci_disable_device(pdev
);
4243 * megasas_flush_cache - Requests FW to flush all its caches
4244 * @instance: Adapter soft state
4246 static void megasas_flush_cache(struct megasas_instance
*instance
)
4248 struct megasas_cmd
*cmd
;
4249 struct megasas_dcmd_frame
*dcmd
;
4251 if (instance
->adprecovery
== MEGASAS_HW_CRITICAL_ERROR
)
4254 cmd
= megasas_get_cmd(instance
);
4259 dcmd
= &cmd
->frame
->dcmd
;
4261 memset(dcmd
->mbox
.b
, 0, MFI_MBOX_SIZE
);
4263 dcmd
->cmd
= MFI_CMD_DCMD
;
4264 dcmd
->cmd_status
= 0x0;
4265 dcmd
->sge_count
= 0;
4266 dcmd
->flags
= MFI_FRAME_DIR_NONE
;
4269 dcmd
->data_xfer_len
= 0;
4270 dcmd
->opcode
= MR_DCMD_CTRL_CACHE_FLUSH
;
4271 dcmd
->mbox
.b
[0] = MR_FLUSH_CTRL_CACHE
| MR_FLUSH_DISK_CACHE
;
4273 megasas_issue_blocked_cmd(instance
, cmd
);
4275 megasas_return_cmd(instance
, cmd
);
4281 * megasas_shutdown_controller - Instructs FW to shutdown the controller
4282 * @instance: Adapter soft state
4283 * @opcode: Shutdown/Hibernate
4285 static void megasas_shutdown_controller(struct megasas_instance
*instance
,
4288 struct megasas_cmd
*cmd
;
4289 struct megasas_dcmd_frame
*dcmd
;
4291 if (instance
->adprecovery
== MEGASAS_HW_CRITICAL_ERROR
)
4294 cmd
= megasas_get_cmd(instance
);
4299 if (instance
->aen_cmd
)
4300 megasas_issue_blocked_abort_cmd(instance
, instance
->aen_cmd
);
4301 if (instance
->map_update_cmd
)
4302 megasas_issue_blocked_abort_cmd(instance
,
4303 instance
->map_update_cmd
);
4304 dcmd
= &cmd
->frame
->dcmd
;
4306 memset(dcmd
->mbox
.b
, 0, MFI_MBOX_SIZE
);
4308 dcmd
->cmd
= MFI_CMD_DCMD
;
4309 dcmd
->cmd_status
= 0x0;
4310 dcmd
->sge_count
= 0;
4311 dcmd
->flags
= MFI_FRAME_DIR_NONE
;
4314 dcmd
->data_xfer_len
= 0;
4315 dcmd
->opcode
= opcode
;
4317 megasas_issue_blocked_cmd(instance
, cmd
);
4319 megasas_return_cmd(instance
, cmd
);
4326 * megasas_suspend - driver suspend entry point
4327 * @pdev: PCI device structure
4328 * @state: PCI power state to suspend routine
4331 megasas_suspend(struct pci_dev
*pdev
, pm_message_t state
)
4333 struct Scsi_Host
*host
;
4334 struct megasas_instance
*instance
;
4337 instance
= pci_get_drvdata(pdev
);
4338 host
= instance
->host
;
4339 instance
->unload
= 1;
4341 megasas_flush_cache(instance
);
4342 megasas_shutdown_controller(instance
, MR_DCMD_HIBERNATE_SHUTDOWN
);
4344 /* cancel the delayed work if this work still in queue */
4345 if (instance
->ev
!= NULL
) {
4346 struct megasas_aen_event
*ev
= instance
->ev
;
4347 cancel_delayed_work_sync(
4348 (struct delayed_work
*)&ev
->hotplug_work
);
4349 instance
->ev
= NULL
;
4352 tasklet_kill(&instance
->isr_tasklet
);
4354 pci_set_drvdata(instance
->pdev
, instance
);
4355 instance
->instancet
->disable_intr(instance
->reg_set
);
4357 if (instance
->msix_vectors
)
4358 for (i
= 0 ; i
< instance
->msix_vectors
; i
++)
4359 free_irq(instance
->msixentry
[i
].vector
,
4360 &instance
->irq_context
[i
]);
4362 free_irq(instance
->pdev
->irq
, &instance
->irq_context
[0]);
4363 if (instance
->msix_vectors
)
4364 pci_disable_msix(instance
->pdev
);
4366 pci_save_state(pdev
);
4367 pci_disable_device(pdev
);
4369 pci_set_power_state(pdev
, pci_choose_state(pdev
, state
));
4375 * megasas_resume- driver resume entry point
4376 * @pdev: PCI device structure
4379 megasas_resume(struct pci_dev
*pdev
)
4382 struct Scsi_Host
*host
;
4383 struct megasas_instance
*instance
;
4385 instance
= pci_get_drvdata(pdev
);
4386 host
= instance
->host
;
4387 pci_set_power_state(pdev
, PCI_D0
);
4388 pci_enable_wake(pdev
, PCI_D0
, 0);
4389 pci_restore_state(pdev
);
4392 * PCI prepping: enable device set bus mastering and dma mask
4394 rval
= pci_enable_device_mem(pdev
);
4397 printk(KERN_ERR
"megasas: Enable device failed\n");
4401 pci_set_master(pdev
);
4403 if (megasas_set_dma_mask(pdev
))
4404 goto fail_set_dma_mask
;
4407 * Initialize MFI Firmware
4410 atomic_set(&instance
->fw_outstanding
, 0);
4413 * We expect the FW state to be READY
4415 if (megasas_transition_to_ready(instance
, 0))
4416 goto fail_ready_state
;
4418 /* Now re-enable MSI-X */
4419 if (instance
->msix_vectors
)
4420 pci_enable_msix(instance
->pdev
, instance
->msixentry
,
4421 instance
->msix_vectors
);
4423 switch (instance
->pdev
->device
) {
4424 case PCI_DEVICE_ID_LSI_FUSION
:
4425 case PCI_DEVICE_ID_LSI_INVADER
:
4427 megasas_reset_reply_desc(instance
);
4428 if (megasas_ioc_init_fusion(instance
)) {
4429 megasas_free_cmds(instance
);
4430 megasas_free_cmds_fusion(instance
);
4433 if (!megasas_get_map_info(instance
))
4434 megasas_sync_map_info(instance
);
4438 *instance
->producer
= 0;
4439 *instance
->consumer
= 0;
4440 if (megasas_issue_init_mfi(instance
))
4445 tasklet_init(&instance
->isr_tasklet
, instance
->instancet
->tasklet
,
4446 (unsigned long)instance
);
4451 if (instance
->msix_vectors
) {
4452 for (i
= 0 ; i
< instance
->msix_vectors
; i
++) {
4453 instance
->irq_context
[i
].instance
= instance
;
4454 instance
->irq_context
[i
].MSIxIndex
= i
;
4455 if (request_irq(instance
->msixentry
[i
].vector
,
4456 instance
->instancet
->service_isr
, 0,
4458 &instance
->irq_context
[i
])) {
4459 printk(KERN_DEBUG
"megasas: Failed to "
4460 "register IRQ for vector %d.\n", i
);
4461 for (j
= 0 ; j
< i
; j
++)
4463 instance
->msixentry
[j
].vector
,
4464 &instance
->irq_context
[j
]);
4469 instance
->irq_context
[0].instance
= instance
;
4470 instance
->irq_context
[0].MSIxIndex
= 0;
4471 if (request_irq(pdev
->irq
, instance
->instancet
->service_isr
,
4472 IRQF_SHARED
, "megasas",
4473 &instance
->irq_context
[0])) {
4474 printk(KERN_DEBUG
"megasas: Failed to register IRQ\n");
4479 instance
->instancet
->enable_intr(instance
->reg_set
);
4480 instance
->unload
= 0;
4483 * Initiate AEN (Asynchronous Event Notification)
4485 if (megasas_start_aen(instance
))
4486 printk(KERN_ERR
"megasas: Start AEN failed\n");
4492 if (instance
->evt_detail
)
4493 pci_free_consistent(pdev
, sizeof(struct megasas_evt_detail
),
4494 instance
->evt_detail
,
4495 instance
->evt_detail_h
);
4497 if (instance
->producer
)
4498 pci_free_consistent(pdev
, sizeof(u32
), instance
->producer
,
4499 instance
->producer_h
);
4500 if (instance
->consumer
)
4501 pci_free_consistent(pdev
, sizeof(u32
), instance
->consumer
,
4502 instance
->consumer_h
);
4503 scsi_host_put(host
);
4508 pci_disable_device(pdev
);
4513 #define megasas_suspend NULL
4514 #define megasas_resume NULL
4518 * megasas_detach_one - PCI hot"un"plug entry point
4519 * @pdev: PCI device structure
4521 static void __devexit
megasas_detach_one(struct pci_dev
*pdev
)
4524 struct Scsi_Host
*host
;
4525 struct megasas_instance
*instance
;
4526 struct fusion_context
*fusion
;
4528 instance
= pci_get_drvdata(pdev
);
4529 instance
->unload
= 1;
4530 host
= instance
->host
;
4531 fusion
= instance
->ctrl_context
;
4533 scsi_remove_host(instance
->host
);
4534 megasas_flush_cache(instance
);
4535 megasas_shutdown_controller(instance
, MR_DCMD_CTRL_SHUTDOWN
);
4537 /* cancel the delayed work if this work still in queue*/
4538 if (instance
->ev
!= NULL
) {
4539 struct megasas_aen_event
*ev
= instance
->ev
;
4540 cancel_delayed_work_sync(
4541 (struct delayed_work
*)&ev
->hotplug_work
);
4542 instance
->ev
= NULL
;
4545 tasklet_kill(&instance
->isr_tasklet
);
4548 * Take the instance off the instance array. Note that we will not
4549 * decrement the max_index. We let this array be sparse array
4551 for (i
= 0; i
< megasas_mgmt_info
.max_index
; i
++) {
4552 if (megasas_mgmt_info
.instance
[i
] == instance
) {
4553 megasas_mgmt_info
.count
--;
4554 megasas_mgmt_info
.instance
[i
] = NULL
;
4560 pci_set_drvdata(instance
->pdev
, NULL
);
4562 instance
->instancet
->disable_intr(instance
->reg_set
);
4564 if (instance
->msix_vectors
)
4565 for (i
= 0 ; i
< instance
->msix_vectors
; i
++)
4566 free_irq(instance
->msixentry
[i
].vector
,
4567 &instance
->irq_context
[i
]);
4569 free_irq(instance
->pdev
->irq
, &instance
->irq_context
[0]);
4570 if (instance
->msix_vectors
)
4571 pci_disable_msix(instance
->pdev
);
4573 switch (instance
->pdev
->device
) {
4574 case PCI_DEVICE_ID_LSI_FUSION
:
4575 case PCI_DEVICE_ID_LSI_INVADER
:
4576 megasas_release_fusion(instance
);
4577 for (i
= 0; i
< 2 ; i
++)
4578 if (fusion
->ld_map
[i
])
4579 dma_free_coherent(&instance
->pdev
->dev
,
4584 kfree(instance
->ctrl_context
);
4587 megasas_release_mfi(instance
);
4588 pci_free_consistent(pdev
,
4589 sizeof(struct megasas_evt_detail
),
4590 instance
->evt_detail
,
4591 instance
->evt_detail_h
);
4592 pci_free_consistent(pdev
, sizeof(u32
),
4594 instance
->producer_h
);
4595 pci_free_consistent(pdev
, sizeof(u32
),
4597 instance
->consumer_h
);
4601 scsi_host_put(host
);
4603 pci_set_drvdata(pdev
, NULL
);
4605 pci_disable_device(pdev
);
4611 * megasas_shutdown - Shutdown entry point
4612 * @device: Generic device structure
4614 static void megasas_shutdown(struct pci_dev
*pdev
)
4617 struct megasas_instance
*instance
= pci_get_drvdata(pdev
);
4619 instance
->unload
= 1;
4620 megasas_flush_cache(instance
);
4621 megasas_shutdown_controller(instance
, MR_DCMD_CTRL_SHUTDOWN
);
4622 instance
->instancet
->disable_intr(instance
->reg_set
);
4623 if (instance
->msix_vectors
)
4624 for (i
= 0 ; i
< instance
->msix_vectors
; i
++)
4625 free_irq(instance
->msixentry
[i
].vector
,
4626 &instance
->irq_context
[i
]);
4628 free_irq(instance
->pdev
->irq
, &instance
->irq_context
[0]);
4629 if (instance
->msix_vectors
)
4630 pci_disable_msix(instance
->pdev
);
4634 * megasas_mgmt_open - char node "open" entry point
4636 static int megasas_mgmt_open(struct inode
*inode
, struct file
*filep
)
4639 * Allow only those users with admin rights
4641 if (!capable(CAP_SYS_ADMIN
))
4648 * megasas_mgmt_fasync - Async notifier registration from applications
4650 * This function adds the calling process to a driver global queue. When an
4651 * event occurs, SIGIO will be sent to all processes in this queue.
4653 static int megasas_mgmt_fasync(int fd
, struct file
*filep
, int mode
)
4657 mutex_lock(&megasas_async_queue_mutex
);
4659 rc
= fasync_helper(fd
, filep
, mode
, &megasas_async_queue
);
4661 mutex_unlock(&megasas_async_queue_mutex
);
4664 /* For sanity check when we get ioctl */
4665 filep
->private_data
= filep
;
4669 printk(KERN_DEBUG
"megasas: fasync_helper failed [%d]\n", rc
);
4675 * megasas_mgmt_poll - char node "poll" entry point
4677 static unsigned int megasas_mgmt_poll(struct file
*file
, poll_table
*wait
)
4680 unsigned long flags
;
4681 poll_wait(file
, &megasas_poll_wait
, wait
);
4682 spin_lock_irqsave(&poll_aen_lock
, flags
);
4683 if (megasas_poll_wait_aen
)
4684 mask
= (POLLIN
| POLLRDNORM
);
4687 spin_unlock_irqrestore(&poll_aen_lock
, flags
);
4692 * megasas_mgmt_fw_ioctl - Issues management ioctls to FW
4693 * @instance: Adapter soft state
4694 * @argp: User's ioctl packet
4697 megasas_mgmt_fw_ioctl(struct megasas_instance
*instance
,
4698 struct megasas_iocpacket __user
* user_ioc
,
4699 struct megasas_iocpacket
*ioc
)
4701 struct megasas_sge32
*kern_sge32
;
4702 struct megasas_cmd
*cmd
;
4703 void *kbuff_arr
[MAX_IOCTL_SGE
];
4704 dma_addr_t buf_handle
= 0;
4707 dma_addr_t sense_handle
;
4708 unsigned long *sense_ptr
;
4710 memset(kbuff_arr
, 0, sizeof(kbuff_arr
));
4712 if (ioc
->sge_count
> MAX_IOCTL_SGE
) {
4713 printk(KERN_DEBUG
"megasas: SGE count [%d] > max limit [%d]\n",
4714 ioc
->sge_count
, MAX_IOCTL_SGE
);
4718 cmd
= megasas_get_cmd(instance
);
4720 printk(KERN_DEBUG
"megasas: Failed to get a cmd packet\n");
4725 * User's IOCTL packet has 2 frames (maximum). Copy those two
4726 * frames into our cmd's frames. cmd->frame's context will get
4727 * overwritten when we copy from user's frames. So set that value
4730 memcpy(cmd
->frame
, ioc
->frame
.raw
, 2 * MEGAMFI_FRAME_SIZE
);
4731 cmd
->frame
->hdr
.context
= cmd
->index
;
4732 cmd
->frame
->hdr
.pad_0
= 0;
4733 cmd
->frame
->hdr
.flags
&= ~(MFI_FRAME_IEEE
| MFI_FRAME_SGL64
|
4737 * The management interface between applications and the fw uses
4738 * MFI frames. E.g, RAID configuration changes, LD property changes
4739 * etc are accomplishes through different kinds of MFI frames. The
4740 * driver needs to care only about substituting user buffers with
4741 * kernel buffers in SGLs. The location of SGL is embedded in the
4742 * struct iocpacket itself.
4744 kern_sge32
= (struct megasas_sge32
*)
4745 ((unsigned long)cmd
->frame
+ ioc
->sgl_off
);
4748 * For each user buffer, create a mirror buffer and copy in
4750 for (i
= 0; i
< ioc
->sge_count
; i
++) {
4751 if (!ioc
->sgl
[i
].iov_len
)
4754 kbuff_arr
[i
] = dma_alloc_coherent(&instance
->pdev
->dev
,
4755 ioc
->sgl
[i
].iov_len
,
4756 &buf_handle
, GFP_KERNEL
);
4757 if (!kbuff_arr
[i
]) {
4758 printk(KERN_DEBUG
"megasas: Failed to alloc "
4759 "kernel SGL buffer for IOCTL \n");
4765 * We don't change the dma_coherent_mask, so
4766 * pci_alloc_consistent only returns 32bit addresses
4768 kern_sge32
[i
].phys_addr
= (u32
) buf_handle
;
4769 kern_sge32
[i
].length
= ioc
->sgl
[i
].iov_len
;
4772 * We created a kernel buffer corresponding to the
4773 * user buffer. Now copy in from the user buffer
4775 if (copy_from_user(kbuff_arr
[i
], ioc
->sgl
[i
].iov_base
,
4776 (u32
) (ioc
->sgl
[i
].iov_len
))) {
4782 if (ioc
->sense_len
) {
4783 sense
= dma_alloc_coherent(&instance
->pdev
->dev
, ioc
->sense_len
,
4784 &sense_handle
, GFP_KERNEL
);
4791 (unsigned long *) ((unsigned long)cmd
->frame
+ ioc
->sense_off
);
4792 *sense_ptr
= sense_handle
;
4796 * Set the sync_cmd flag so that the ISR knows not to complete this
4797 * cmd to the SCSI mid-layer
4800 megasas_issue_blocked_cmd(instance
, cmd
);
4804 * copy out the kernel buffers to user buffers
4806 for (i
= 0; i
< ioc
->sge_count
; i
++) {
4807 if (copy_to_user(ioc
->sgl
[i
].iov_base
, kbuff_arr
[i
],
4808 ioc
->sgl
[i
].iov_len
)) {
4815 * copy out the sense
4817 if (ioc
->sense_len
) {
4819 * sense_ptr points to the location that has the user
4820 * sense buffer address
4822 sense_ptr
= (unsigned long *) ((unsigned long)ioc
->frame
.raw
+
4825 if (copy_to_user((void __user
*)((unsigned long)(*sense_ptr
)),
4826 sense
, ioc
->sense_len
)) {
4827 printk(KERN_ERR
"megasas: Failed to copy out to user "
4835 * copy the status codes returned by the fw
4837 if (copy_to_user(&user_ioc
->frame
.hdr
.cmd_status
,
4838 &cmd
->frame
->hdr
.cmd_status
, sizeof(u8
))) {
4839 printk(KERN_DEBUG
"megasas: Error copying out cmd_status\n");
4845 dma_free_coherent(&instance
->pdev
->dev
, ioc
->sense_len
,
4846 sense
, sense_handle
);
4849 for (i
= 0; i
< ioc
->sge_count
&& kbuff_arr
[i
]; i
++) {
4850 dma_free_coherent(&instance
->pdev
->dev
,
4851 kern_sge32
[i
].length
,
4852 kbuff_arr
[i
], kern_sge32
[i
].phys_addr
);
4855 megasas_return_cmd(instance
, cmd
);
4859 static int megasas_mgmt_ioctl_fw(struct file
*file
, unsigned long arg
)
4861 struct megasas_iocpacket __user
*user_ioc
=
4862 (struct megasas_iocpacket __user
*)arg
;
4863 struct megasas_iocpacket
*ioc
;
4864 struct megasas_instance
*instance
;
4867 unsigned long flags
;
4868 u32 wait_time
= MEGASAS_RESET_WAIT_TIME
;
4870 ioc
= kmalloc(sizeof(*ioc
), GFP_KERNEL
);
4874 if (copy_from_user(ioc
, user_ioc
, sizeof(*ioc
))) {
4879 instance
= megasas_lookup_instance(ioc
->host_no
);
4885 if (instance
->adprecovery
== MEGASAS_HW_CRITICAL_ERROR
) {
4886 printk(KERN_ERR
"Controller in crit error\n");
4891 if (instance
->unload
== 1) {
4897 * We will allow only MEGASAS_INT_CMDS number of parallel ioctl cmds
4899 if (down_interruptible(&instance
->ioctl_sem
)) {
4900 error
= -ERESTARTSYS
;
4904 for (i
= 0; i
< wait_time
; i
++) {
4906 spin_lock_irqsave(&instance
->hba_lock
, flags
);
4907 if (instance
->adprecovery
== MEGASAS_HBA_OPERATIONAL
) {
4908 spin_unlock_irqrestore(&instance
->hba_lock
, flags
);
4911 spin_unlock_irqrestore(&instance
->hba_lock
, flags
);
4913 if (!(i
% MEGASAS_RESET_NOTICE_INTERVAL
)) {
4914 printk(KERN_NOTICE
"megasas: waiting"
4915 "for controller reset to finish\n");
4921 spin_lock_irqsave(&instance
->hba_lock
, flags
);
4922 if (instance
->adprecovery
!= MEGASAS_HBA_OPERATIONAL
) {
4923 spin_unlock_irqrestore(&instance
->hba_lock
, flags
);
4925 printk(KERN_ERR
"megaraid_sas: timed out while"
4926 "waiting for HBA to recover\n");
4930 spin_unlock_irqrestore(&instance
->hba_lock
, flags
);
4932 error
= megasas_mgmt_fw_ioctl(instance
, user_ioc
, ioc
);
4933 up(&instance
->ioctl_sem
);
4940 static int megasas_mgmt_ioctl_aen(struct file
*file
, unsigned long arg
)
4942 struct megasas_instance
*instance
;
4943 struct megasas_aen aen
;
4946 unsigned long flags
;
4947 u32 wait_time
= MEGASAS_RESET_WAIT_TIME
;
4949 if (file
->private_data
!= file
) {
4950 printk(KERN_DEBUG
"megasas: fasync_helper was not "
4955 if (copy_from_user(&aen
, (void __user
*)arg
, sizeof(aen
)))
4958 instance
= megasas_lookup_instance(aen
.host_no
);
4963 if (instance
->adprecovery
== MEGASAS_HW_CRITICAL_ERROR
) {
4967 if (instance
->unload
== 1) {
4971 for (i
= 0; i
< wait_time
; i
++) {
4973 spin_lock_irqsave(&instance
->hba_lock
, flags
);
4974 if (instance
->adprecovery
== MEGASAS_HBA_OPERATIONAL
) {
4975 spin_unlock_irqrestore(&instance
->hba_lock
,
4980 spin_unlock_irqrestore(&instance
->hba_lock
, flags
);
4982 if (!(i
% MEGASAS_RESET_NOTICE_INTERVAL
)) {
4983 printk(KERN_NOTICE
"megasas: waiting for"
4984 "controller reset to finish\n");
4990 spin_lock_irqsave(&instance
->hba_lock
, flags
);
4991 if (instance
->adprecovery
!= MEGASAS_HBA_OPERATIONAL
) {
4992 spin_unlock_irqrestore(&instance
->hba_lock
, flags
);
4993 printk(KERN_ERR
"megaraid_sas: timed out while waiting"
4994 "for HBA to recover.\n");
4997 spin_unlock_irqrestore(&instance
->hba_lock
, flags
);
4999 mutex_lock(&instance
->aen_mutex
);
5000 error
= megasas_register_aen(instance
, aen
.seq_num
,
5001 aen
.class_locale_word
);
5002 mutex_unlock(&instance
->aen_mutex
);
5007 * megasas_mgmt_ioctl - char node ioctl entry point
5010 megasas_mgmt_ioctl(struct file
*file
, unsigned int cmd
, unsigned long arg
)
5013 case MEGASAS_IOC_FIRMWARE
:
5014 return megasas_mgmt_ioctl_fw(file
, arg
);
5016 case MEGASAS_IOC_GET_AEN
:
5017 return megasas_mgmt_ioctl_aen(file
, arg
);
5023 #ifdef CONFIG_COMPAT
5024 static int megasas_mgmt_compat_ioctl_fw(struct file
*file
, unsigned long arg
)
5026 struct compat_megasas_iocpacket __user
*cioc
=
5027 (struct compat_megasas_iocpacket __user
*)arg
;
5028 struct megasas_iocpacket __user
*ioc
=
5029 compat_alloc_user_space(sizeof(struct megasas_iocpacket
));
5034 if (clear_user(ioc
, sizeof(*ioc
)))
5037 if (copy_in_user(&ioc
->host_no
, &cioc
->host_no
, sizeof(u16
)) ||
5038 copy_in_user(&ioc
->sgl_off
, &cioc
->sgl_off
, sizeof(u32
)) ||
5039 copy_in_user(&ioc
->sense_off
, &cioc
->sense_off
, sizeof(u32
)) ||
5040 copy_in_user(&ioc
->sense_len
, &cioc
->sense_len
, sizeof(u32
)) ||
5041 copy_in_user(ioc
->frame
.raw
, cioc
->frame
.raw
, 128) ||
5042 copy_in_user(&ioc
->sge_count
, &cioc
->sge_count
, sizeof(u32
)))
5046 * The sense_ptr is used in megasas_mgmt_fw_ioctl only when
5047 * sense_len is not null, so prepare the 64bit value under
5048 * the same condition.
5050 if (ioc
->sense_len
) {
5051 void __user
**sense_ioc_ptr
=
5052 (void __user
**)(ioc
->frame
.raw
+ ioc
->sense_off
);
5053 compat_uptr_t
*sense_cioc_ptr
=
5054 (compat_uptr_t
*)(cioc
->frame
.raw
+ cioc
->sense_off
);
5055 if (get_user(ptr
, sense_cioc_ptr
) ||
5056 put_user(compat_ptr(ptr
), sense_ioc_ptr
))
5060 for (i
= 0; i
< MAX_IOCTL_SGE
; i
++) {
5061 if (get_user(ptr
, &cioc
->sgl
[i
].iov_base
) ||
5062 put_user(compat_ptr(ptr
), &ioc
->sgl
[i
].iov_base
) ||
5063 copy_in_user(&ioc
->sgl
[i
].iov_len
,
5064 &cioc
->sgl
[i
].iov_len
, sizeof(compat_size_t
)))
5068 error
= megasas_mgmt_ioctl_fw(file
, (unsigned long)ioc
);
5070 if (copy_in_user(&cioc
->frame
.hdr
.cmd_status
,
5071 &ioc
->frame
.hdr
.cmd_status
, sizeof(u8
))) {
5072 printk(KERN_DEBUG
"megasas: error copy_in_user cmd_status\n");
5079 megasas_mgmt_compat_ioctl(struct file
*file
, unsigned int cmd
,
5083 case MEGASAS_IOC_FIRMWARE32
:
5084 return megasas_mgmt_compat_ioctl_fw(file
, arg
);
5085 case MEGASAS_IOC_GET_AEN
:
5086 return megasas_mgmt_ioctl_aen(file
, arg
);
5094 * File operations structure for management interface
5096 static const struct file_operations megasas_mgmt_fops
= {
5097 .owner
= THIS_MODULE
,
5098 .open
= megasas_mgmt_open
,
5099 .fasync
= megasas_mgmt_fasync
,
5100 .unlocked_ioctl
= megasas_mgmt_ioctl
,
5101 .poll
= megasas_mgmt_poll
,
5102 #ifdef CONFIG_COMPAT
5103 .compat_ioctl
= megasas_mgmt_compat_ioctl
,
5105 .llseek
= noop_llseek
,
5109 * PCI hotplug support registration structure
5111 static struct pci_driver megasas_pci_driver
= {
5113 .name
= "megaraid_sas",
5114 .id_table
= megasas_pci_table
,
5115 .probe
= megasas_probe_one
,
5116 .remove
= __devexit_p(megasas_detach_one
),
5117 .suspend
= megasas_suspend
,
5118 .resume
= megasas_resume
,
5119 .shutdown
= megasas_shutdown
,
5123 * Sysfs driver attributes
5125 static ssize_t
megasas_sysfs_show_version(struct device_driver
*dd
, char *buf
)
5127 return snprintf(buf
, strlen(MEGASAS_VERSION
) + 2, "%s\n",
5131 static DRIVER_ATTR(version
, S_IRUGO
, megasas_sysfs_show_version
, NULL
);
5134 megasas_sysfs_show_release_date(struct device_driver
*dd
, char *buf
)
5136 return snprintf(buf
, strlen(MEGASAS_RELDATE
) + 2, "%s\n",
5140 static DRIVER_ATTR(release_date
, S_IRUGO
, megasas_sysfs_show_release_date
,
5144 megasas_sysfs_show_support_poll_for_event(struct device_driver
*dd
, char *buf
)
5146 return sprintf(buf
, "%u\n", support_poll_for_event
);
5149 static DRIVER_ATTR(support_poll_for_event
, S_IRUGO
,
5150 megasas_sysfs_show_support_poll_for_event
, NULL
);
5153 megasas_sysfs_show_support_device_change(struct device_driver
*dd
, char *buf
)
5155 return sprintf(buf
, "%u\n", support_device_change
);
5158 static DRIVER_ATTR(support_device_change
, S_IRUGO
,
5159 megasas_sysfs_show_support_device_change
, NULL
);
5162 megasas_sysfs_show_dbg_lvl(struct device_driver
*dd
, char *buf
)
5164 return sprintf(buf
, "%u\n", megasas_dbg_lvl
);
5168 megasas_sysfs_set_dbg_lvl(struct device_driver
*dd
, const char *buf
, size_t count
)
5171 if(sscanf(buf
,"%u",&megasas_dbg_lvl
)<1){
5172 printk(KERN_ERR
"megasas: could not set dbg_lvl\n");
5178 static DRIVER_ATTR(dbg_lvl
, S_IRUGO
|S_IWUSR
, megasas_sysfs_show_dbg_lvl
,
5179 megasas_sysfs_set_dbg_lvl
);
5182 megasas_aen_polling(struct work_struct
*work
)
5184 struct megasas_aen_event
*ev
=
5185 container_of(work
, struct megasas_aen_event
, hotplug_work
);
5186 struct megasas_instance
*instance
= ev
->instance
;
5187 union megasas_evt_class_locale class_locale
;
5188 struct Scsi_Host
*host
;
5189 struct scsi_device
*sdev1
;
5192 int i
, j
, doscan
= 0;
5197 printk(KERN_ERR
"invalid instance!\n");
5201 instance
->ev
= NULL
;
5202 host
= instance
->host
;
5203 if (instance
->evt_detail
) {
5205 switch (instance
->evt_detail
->code
) {
5206 case MR_EVT_PD_INSERTED
:
5207 if (megasas_get_pd_list(instance
) == 0) {
5208 for (i
= 0; i
< MEGASAS_MAX_PD_CHANNELS
; i
++) {
5210 j
< MEGASAS_MAX_DEV_PER_CHANNEL
;
5214 (i
* MEGASAS_MAX_DEV_PER_CHANNEL
) + j
;
5217 scsi_device_lookup(host
, i
, j
, 0);
5219 if (instance
->pd_list
[pd_index
].driveState
5220 == MR_PD_STATE_SYSTEM
) {
5222 scsi_add_device(host
, i
, j
, 0);
5226 scsi_device_put(sdev1
);
5234 case MR_EVT_PD_REMOVED
:
5235 if (megasas_get_pd_list(instance
) == 0) {
5236 megasas_get_pd_list(instance
);
5237 for (i
= 0; i
< MEGASAS_MAX_PD_CHANNELS
; i
++) {
5239 j
< MEGASAS_MAX_DEV_PER_CHANNEL
;
5243 (i
* MEGASAS_MAX_DEV_PER_CHANNEL
) + j
;
5246 scsi_device_lookup(host
, i
, j
, 0);
5248 if (instance
->pd_list
[pd_index
].driveState
5249 == MR_PD_STATE_SYSTEM
) {
5251 scsi_device_put(sdev1
);
5255 scsi_remove_device(sdev1
);
5256 scsi_device_put(sdev1
);
5265 case MR_EVT_LD_OFFLINE
:
5266 case MR_EVT_CFG_CLEARED
:
5267 case MR_EVT_LD_DELETED
:
5268 megasas_get_ld_list(instance
);
5269 for (i
= 0; i
< MEGASAS_MAX_LD_CHANNELS
; i
++) {
5271 j
< MEGASAS_MAX_DEV_PER_CHANNEL
;
5275 (i
* MEGASAS_MAX_DEV_PER_CHANNEL
) + j
;
5277 sdev1
= scsi_device_lookup(host
,
5278 i
+ MEGASAS_MAX_LD_CHANNELS
,
5282 if (instance
->ld_ids
[ld_index
] != 0xff) {
5284 scsi_device_put(sdev1
);
5288 scsi_remove_device(sdev1
);
5289 scsi_device_put(sdev1
);
5296 case MR_EVT_LD_CREATED
:
5297 megasas_get_ld_list(instance
);
5298 for (i
= 0; i
< MEGASAS_MAX_LD_CHANNELS
; i
++) {
5300 j
< MEGASAS_MAX_DEV_PER_CHANNEL
;
5303 (i
* MEGASAS_MAX_DEV_PER_CHANNEL
) + j
;
5305 sdev1
= scsi_device_lookup(host
,
5306 i
+MEGASAS_MAX_LD_CHANNELS
,
5309 if (instance
->ld_ids
[ld_index
] !=
5312 scsi_add_device(host
,
5318 scsi_device_put(sdev1
);
5324 case MR_EVT_CTRL_HOST_BUS_SCAN_REQUESTED
:
5325 case MR_EVT_FOREIGN_CFG_IMPORTED
:
5326 case MR_EVT_LD_STATE_CHANGE
:
5334 printk(KERN_ERR
"invalid evt_detail!\n");
5340 printk(KERN_INFO
"scanning ...\n");
5341 megasas_get_pd_list(instance
);
5342 for (i
= 0; i
< MEGASAS_MAX_PD_CHANNELS
; i
++) {
5343 for (j
= 0; j
< MEGASAS_MAX_DEV_PER_CHANNEL
; j
++) {
5344 pd_index
= i
*MEGASAS_MAX_DEV_PER_CHANNEL
+ j
;
5345 sdev1
= scsi_device_lookup(host
, i
, j
, 0);
5346 if (instance
->pd_list
[pd_index
].driveState
==
5347 MR_PD_STATE_SYSTEM
) {
5349 scsi_add_device(host
, i
, j
, 0);
5352 scsi_device_put(sdev1
);
5355 scsi_remove_device(sdev1
);
5356 scsi_device_put(sdev1
);
5362 megasas_get_ld_list(instance
);
5363 for (i
= 0; i
< MEGASAS_MAX_LD_CHANNELS
; i
++) {
5364 for (j
= 0; j
< MEGASAS_MAX_DEV_PER_CHANNEL
; j
++) {
5366 (i
* MEGASAS_MAX_DEV_PER_CHANNEL
) + j
;
5368 sdev1
= scsi_device_lookup(host
,
5369 i
+MEGASAS_MAX_LD_CHANNELS
, j
, 0);
5370 if (instance
->ld_ids
[ld_index
] != 0xff) {
5372 scsi_add_device(host
,
5376 scsi_device_put(sdev1
);
5380 scsi_remove_device(sdev1
);
5381 scsi_device_put(sdev1
);
5388 if ( instance
->aen_cmd
!= NULL
) {
5393 seq_num
= instance
->evt_detail
->seq_num
+ 1;
5395 /* Register AEN with FW for latest sequence number plus 1 */
5396 class_locale
.members
.reserved
= 0;
5397 class_locale
.members
.locale
= MR_EVT_LOCALE_ALL
;
5398 class_locale
.members
.class = MR_EVT_CLASS_DEBUG
;
5399 mutex_lock(&instance
->aen_mutex
);
5400 error
= megasas_register_aen(instance
, seq_num
,
5402 mutex_unlock(&instance
->aen_mutex
);
5405 printk(KERN_ERR
"register aen failed error %x\n", error
);
5411 * megasas_init - Driver load entry point
5413 static int __init
megasas_init(void)
5418 * Announce driver version and other information
5420 printk(KERN_INFO
"megasas: %s %s\n", MEGASAS_VERSION
,
5421 MEGASAS_EXT_VERSION
);
5423 spin_lock_init(&poll_aen_lock
);
5425 support_poll_for_event
= 2;
5426 support_device_change
= 1;
5428 memset(&megasas_mgmt_info
, 0, sizeof(megasas_mgmt_info
));
5431 * Register character device node
5433 rval
= register_chrdev(0, "megaraid_sas_ioctl", &megasas_mgmt_fops
);
5436 printk(KERN_DEBUG
"megasas: failed to open device node\n");
5440 megasas_mgmt_majorno
= rval
;
5443 * Register ourselves as PCI hotplug module
5445 rval
= pci_register_driver(&megasas_pci_driver
);
5448 printk(KERN_DEBUG
"megasas: PCI hotplug regisration failed \n");
5452 rval
= driver_create_file(&megasas_pci_driver
.driver
,
5453 &driver_attr_version
);
5455 goto err_dcf_attr_ver
;
5456 rval
= driver_create_file(&megasas_pci_driver
.driver
,
5457 &driver_attr_release_date
);
5459 goto err_dcf_rel_date
;
5461 rval
= driver_create_file(&megasas_pci_driver
.driver
,
5462 &driver_attr_support_poll_for_event
);
5464 goto err_dcf_support_poll_for_event
;
5466 rval
= driver_create_file(&megasas_pci_driver
.driver
,
5467 &driver_attr_dbg_lvl
);
5469 goto err_dcf_dbg_lvl
;
5470 rval
= driver_create_file(&megasas_pci_driver
.driver
,
5471 &driver_attr_support_device_change
);
5473 goto err_dcf_support_device_change
;
5477 err_dcf_support_device_change
:
5478 driver_remove_file(&megasas_pci_driver
.driver
,
5479 &driver_attr_dbg_lvl
);
5481 driver_remove_file(&megasas_pci_driver
.driver
,
5482 &driver_attr_support_poll_for_event
);
5484 err_dcf_support_poll_for_event
:
5485 driver_remove_file(&megasas_pci_driver
.driver
,
5486 &driver_attr_release_date
);
5489 driver_remove_file(&megasas_pci_driver
.driver
, &driver_attr_version
);
5491 pci_unregister_driver(&megasas_pci_driver
);
5493 unregister_chrdev(megasas_mgmt_majorno
, "megaraid_sas_ioctl");
5498 * megasas_exit - Driver unload entry point
5500 static void __exit
megasas_exit(void)
5502 driver_remove_file(&megasas_pci_driver
.driver
,
5503 &driver_attr_dbg_lvl
);
5504 driver_remove_file(&megasas_pci_driver
.driver
,
5505 &driver_attr_support_poll_for_event
);
5506 driver_remove_file(&megasas_pci_driver
.driver
,
5507 &driver_attr_support_device_change
);
5508 driver_remove_file(&megasas_pci_driver
.driver
,
5509 &driver_attr_release_date
);
5510 driver_remove_file(&megasas_pci_driver
.driver
, &driver_attr_version
);
5512 pci_unregister_driver(&megasas_pci_driver
);
5513 unregister_chrdev(megasas_mgmt_majorno
, "megaraid_sas_ioctl");
5516 module_init(megasas_init
);
5517 module_exit(megasas_exit
);