3 * Linux MegaRAID device driver
5 * Copyright © 2002 LSI Logic Corporation.
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License
9 * as published by the Free Software Foundation; either version
10 * 2 of the License, or (at your option) any later version.
12 * Copyright (c) 2002 Red Hat, Inc. All rights reserved.
14 * - speed-ups (list handling fixes, issued_list, optimizations.)
17 * Copyright (c) 2003 Christoph Hellwig <hch@lst.de>
18 * - new-style, hotplug-aware pci probing and scsi registration
20 * Version : v2.00.3 (Feb 19, 2003) - Atul Mukker <Atul.Mukker@lsil.com>
22 * Description: Linux device driver for LSI Logic MegaRAID controller
24 * Supported controllers: MegaRAID 418, 428, 438, 466, 762, 467, 471, 490, 493
27 * This driver is supported by LSI Logic, with assistance from Red Hat, Dell,
28 * and others. Please send updates to the mailing list
29 * linux-scsi@vger.kernel.org .
35 #include <linux/blkdev.h>
36 #include <asm/uaccess.h>
38 #include <linux/completion.h>
39 #include <linux/delay.h>
40 #include <linux/proc_fs.h>
41 #include <linux/reboot.h>
42 #include <linux/module.h>
43 #include <linux/list.h>
44 #include <linux/interrupt.h>
45 #include <linux/pci.h>
46 #include <linux/init.h>
47 #include <scsi/scsicam.h>
50 #include <scsi/scsi_host.h>
54 #define MEGARAID_MODULE_VERSION "2.00.3"
56 MODULE_AUTHOR ("LSI Logic Corporation");
57 MODULE_DESCRIPTION ("LSI Logic MegaRAID driver");
58 MODULE_LICENSE ("GPL");
59 MODULE_VERSION(MEGARAID_MODULE_VERSION
);
61 static unsigned int max_cmd_per_lun
= DEF_CMD_PER_LUN
;
62 module_param(max_cmd_per_lun
, uint
, 0);
63 MODULE_PARM_DESC(max_cmd_per_lun
, "Maximum number of commands which can be issued to a single LUN (default=DEF_CMD_PER_LUN=63)");
65 static unsigned short int max_sectors_per_io
= MAX_SECTORS_PER_IO
;
66 module_param(max_sectors_per_io
, ushort
, 0);
67 MODULE_PARM_DESC(max_sectors_per_io
, "Maximum number of sectors per I/O request (default=MAX_SECTORS_PER_IO=128)");
70 static unsigned short int max_mbox_busy_wait
= MBOX_BUSY_WAIT
;
71 module_param(max_mbox_busy_wait
, ushort
, 0);
72 MODULE_PARM_DESC(max_mbox_busy_wait
, "Maximum wait for mailbox in microseconds if busy (default=MBOX_BUSY_WAIT=10)");
74 #define RDINDOOR(adapter) readl((adapter)->base + 0x20)
75 #define RDOUTDOOR(adapter) readl((adapter)->base + 0x2C)
76 #define WRINDOOR(adapter,value) writel(value, (adapter)->base + 0x20)
77 #define WROUTDOOR(adapter,value) writel(value, (adapter)->base + 0x2C)
84 static adapter_t
*hba_soft_state
[MAX_CONTROLLERS
];
85 static struct proc_dir_entry
*mega_proc_dir_entry
;
87 /* For controller re-ordering */
88 static struct mega_hbas mega_hbas
[MAX_CONTROLLERS
];
91 * The File Operations structure for the serial/ioctl interface of the driver
93 static struct file_operations megadev_fops
= {
95 .ioctl
= megadev_ioctl
,
100 * Array to structures for storing the information about the controllers. This
101 * information is sent to the user level applications, when they do an ioctl
102 * for this information.
104 static struct mcontroller mcontroller
[MAX_CONTROLLERS
];
106 /* The current driver version */
107 static u32 driver_ver
= 0x02000000;
109 /* major number used by the device for character interface */
112 #define IS_RAID_CH(hba, ch) (((hba)->mega_ch_class >> (ch)) & 0x01)
116 * Debug variable to print some diagnostic messages
118 static int trace_level
;
121 * mega_setup_mailbox()
122 * @adapter - pointer to our soft state
124 * Allocates a 8 byte aligned memory for the handshake mailbox.
127 mega_setup_mailbox(adapter_t
*adapter
)
131 adapter
->una_mbox64
= pci_alloc_consistent(adapter
->dev
,
132 sizeof(mbox64_t
), &adapter
->una_mbox64_dma
);
134 if( !adapter
->una_mbox64
) return -1;
136 adapter
->mbox
= &adapter
->una_mbox64
->mbox
;
138 adapter
->mbox
= (mbox_t
*)((((unsigned long) adapter
->mbox
) + 15) &
141 adapter
->mbox64
= (mbox64_t
*)(((unsigned long)adapter
->mbox
) - 8);
143 align
= ((void *)adapter
->mbox
) - ((void *)&adapter
->una_mbox64
->mbox
);
145 adapter
->mbox_dma
= adapter
->una_mbox64_dma
+ 8 + align
;
148 * Register the mailbox if the controller is an io-mapped controller
150 if( adapter
->flag
& BOARD_IOMAP
) {
152 outb_p(adapter
->mbox_dma
& 0xFF,
153 adapter
->host
->io_port
+ MBOX_PORT0
);
155 outb_p((adapter
->mbox_dma
>> 8) & 0xFF,
156 adapter
->host
->io_port
+ MBOX_PORT1
);
158 outb_p((adapter
->mbox_dma
>> 16) & 0xFF,
159 adapter
->host
->io_port
+ MBOX_PORT2
);
161 outb_p((adapter
->mbox_dma
>> 24) & 0xFF,
162 adapter
->host
->io_port
+ MBOX_PORT3
);
164 outb_p(ENABLE_MBOX_BYTE
,
165 adapter
->host
->io_port
+ ENABLE_MBOX_REGION
);
177 * mega_query_adapter()
178 * @adapter - pointer to our soft state
180 * Issue the adapter inquiry commands to the controller and find out
181 * information and parameter about the devices attached
184 mega_query_adapter(adapter_t
*adapter
)
186 dma_addr_t prod_info_dma_handle
;
187 mega_inquiry3
*inquiry3
;
188 u8 raw_mbox
[sizeof(struct mbox_out
)];
192 /* Initialize adapter inquiry mailbox */
194 mbox
= (mbox_t
*)raw_mbox
;
196 memset((void *)adapter
->mega_buffer
, 0, MEGA_BUFFER_SIZE
);
197 memset(&mbox
->m_out
, 0, sizeof(raw_mbox
));
200 * Try to issue Inquiry3 command
201 * if not succeeded, then issue MEGA_MBOXCMD_ADAPTERINQ command and
202 * update enquiry3 structure
204 mbox
->m_out
.xferaddr
= (u32
)adapter
->buf_dma_handle
;
206 inquiry3
= (mega_inquiry3
*)adapter
->mega_buffer
;
208 raw_mbox
[0] = FC_NEW_CONFIG
; /* i.e. mbox->cmd=0xA1 */
209 raw_mbox
[2] = NC_SUBOP_ENQUIRY3
; /* i.e. 0x0F */
210 raw_mbox
[3] = ENQ3_GET_SOLICITED_FULL
; /* i.e. 0x02 */
212 /* Issue a blocking command to the card */
213 if ((retval
= issue_scb_block(adapter
, raw_mbox
))) {
214 /* the adapter does not support 40ld */
216 mraid_ext_inquiry
*ext_inq
;
218 dma_addr_t dma_handle
;
220 ext_inq
= pci_alloc_consistent(adapter
->dev
,
221 sizeof(mraid_ext_inquiry
), &dma_handle
);
223 if( ext_inq
== NULL
) return -1;
225 inq
= &ext_inq
->raid_inq
;
227 mbox
->m_out
.xferaddr
= (u32
)dma_handle
;
229 /*issue old 0x04 command to adapter */
230 mbox
->m_out
.cmd
= MEGA_MBOXCMD_ADPEXTINQ
;
232 issue_scb_block(adapter
, raw_mbox
);
235 * update Enquiry3 and ProductInfo structures with
236 * mraid_inquiry structure
238 mega_8_to_40ld(inq
, inquiry3
,
239 (mega_product_info
*)&adapter
->product_info
);
241 pci_free_consistent(adapter
->dev
, sizeof(mraid_ext_inquiry
),
242 ext_inq
, dma_handle
);
244 } else { /*adapter supports 40ld */
245 adapter
->flag
|= BOARD_40LD
;
248 * get product_info, which is static information and will be
251 prod_info_dma_handle
= pci_map_single(adapter
->dev
, (void *)
252 &adapter
->product_info
,
253 sizeof(mega_product_info
), PCI_DMA_FROMDEVICE
);
255 mbox
->m_out
.xferaddr
= prod_info_dma_handle
;
257 raw_mbox
[0] = FC_NEW_CONFIG
; /* i.e. mbox->cmd=0xA1 */
258 raw_mbox
[2] = NC_SUBOP_PRODUCT_INFO
; /* i.e. 0x0E */
260 if ((retval
= issue_scb_block(adapter
, raw_mbox
)))
262 "megaraid: Product_info cmd failed with error: %d\n",
265 pci_unmap_single(adapter
->dev
, prod_info_dma_handle
,
266 sizeof(mega_product_info
), PCI_DMA_FROMDEVICE
);
271 * kernel scans the channels from 0 to <= max_channel
273 adapter
->host
->max_channel
=
274 adapter
->product_info
.nchannels
+ NVIRT_CHAN
-1;
276 adapter
->host
->max_id
= 16; /* max targets per channel */
278 adapter
->host
->max_lun
= 7; /* Upto 7 luns for non disk devices */
280 adapter
->host
->cmd_per_lun
= max_cmd_per_lun
;
282 adapter
->numldrv
= inquiry3
->num_ldrv
;
284 adapter
->max_cmds
= adapter
->product_info
.max_commands
;
286 if(adapter
->max_cmds
> MAX_COMMANDS
)
287 adapter
->max_cmds
= MAX_COMMANDS
;
289 adapter
->host
->can_queue
= adapter
->max_cmds
- 1;
292 * Get the maximum number of scatter-gather elements supported by this
295 mega_get_max_sgl(adapter
);
297 adapter
->host
->sg_tablesize
= adapter
->sglen
;
300 /* use HP firmware and bios version encoding */
301 if (adapter
->product_info
.subsysvid
== HP_SUBSYS_VID
) {
302 sprintf (adapter
->fw_version
, "%c%d%d.%d%d",
303 adapter
->product_info
.fw_version
[2],
304 adapter
->product_info
.fw_version
[1] >> 8,
305 adapter
->product_info
.fw_version
[1] & 0x0f,
306 adapter
->product_info
.fw_version
[0] >> 8,
307 adapter
->product_info
.fw_version
[0] & 0x0f);
308 sprintf (adapter
->bios_version
, "%c%d%d.%d%d",
309 adapter
->product_info
.bios_version
[2],
310 adapter
->product_info
.bios_version
[1] >> 8,
311 adapter
->product_info
.bios_version
[1] & 0x0f,
312 adapter
->product_info
.bios_version
[0] >> 8,
313 adapter
->product_info
.bios_version
[0] & 0x0f);
315 memcpy(adapter
->fw_version
,
316 (char *)adapter
->product_info
.fw_version
, 4);
317 adapter
->fw_version
[4] = 0;
319 memcpy(adapter
->bios_version
,
320 (char *)adapter
->product_info
.bios_version
, 4);
322 adapter
->bios_version
[4] = 0;
325 printk(KERN_NOTICE
"megaraid: [%s:%s] detected %d logical drives.\n",
326 adapter
->fw_version
, adapter
->bios_version
, adapter
->numldrv
);
329 * Do we support extended (>10 bytes) cdbs
331 adapter
->support_ext_cdb
= mega_support_ext_cdb(adapter
);
332 if (adapter
->support_ext_cdb
)
333 printk(KERN_NOTICE
"megaraid: supports extended CDBs.\n");
341 * @adapter - pointer to our soft state
343 * Runs through the list of pending requests.
346 mega_runpendq(adapter_t
*adapter
)
348 if(!list_empty(&adapter
->pending_list
))
349 __mega_runpendq(adapter
);
354 * @scmd - Issue this scsi command
355 * @done - the callback hook into the scsi mid-layer
357 * The command queuing entry point for the mid-layer.
360 megaraid_queue(Scsi_Cmnd
*scmd
, void (*done
)(Scsi_Cmnd
*))
367 adapter
= (adapter_t
*)scmd
->device
->host
->hostdata
;
369 scmd
->scsi_done
= done
;
373 * Allocate and build a SCB request
374 * busy flag will be set if mega_build_cmd() command could not
375 * allocate scb. We will return non-zero status in that case.
376 * NOTE: scb can be null even though certain commands completed
377 * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, we would
378 * return 0 in that case.
381 spin_lock_irqsave(&adapter
->lock
, flags
);
382 scb
= mega_build_cmd(adapter
, scmd
, &busy
);
386 scb
->state
|= SCB_PENDQ
;
387 list_add_tail(&scb
->list
, &adapter
->pending_list
);
390 * Check if the HBA is in quiescent state, e.g., during a
391 * delete logical drive opertion. If it is, don't run
394 if (atomic_read(&adapter
->quiescent
) == 0)
395 mega_runpendq(adapter
);
399 spin_unlock_irqrestore(&adapter
->lock
, flags
);
404 * mega_allocate_scb()
405 * @adapter - pointer to our soft state
406 * @cmd - scsi command from the mid-layer
408 * Allocate a SCB structure. This is the central structure for controller
411 static inline scb_t
*
412 mega_allocate_scb(adapter_t
*adapter
, Scsi_Cmnd
*cmd
)
414 struct list_head
*head
= &adapter
->free_list
;
417 /* Unlink command from Free List */
418 if( !list_empty(head
) ) {
420 scb
= list_entry(head
->next
, scb_t
, list
);
422 list_del_init(head
->next
);
424 scb
->state
= SCB_ACTIVE
;
426 scb
->dma_type
= MEGA_DMA_TYPE_NONE
;
435 * mega_get_ldrv_num()
436 * @adapter - pointer to our soft state
437 * @cmd - scsi mid layer command
438 * @channel - channel on the controller
440 * Calculate the logical drive number based on the information in scsi command
441 * and the channel number.
444 mega_get_ldrv_num(adapter_t
*adapter
, Scsi_Cmnd
*cmd
, int channel
)
449 tgt
= cmd
->device
->id
;
451 if ( tgt
> adapter
->this_id
)
452 tgt
--; /* we do not get inquires for initiator id */
454 ldrv_num
= (channel
* 15) + tgt
;
458 * If we have a logical drive with boot enabled, project it first
460 if( adapter
->boot_ldrv_enabled
) {
461 if( ldrv_num
== 0 ) {
462 ldrv_num
= adapter
->boot_ldrv
;
465 if( ldrv_num
<= adapter
->boot_ldrv
) {
472 * If "delete logical drive" feature is enabled on this controller.
473 * Do only if at least one delete logical drive operation was done.
475 * Also, after logical drive deletion, instead of logical drive number,
476 * the value returned should be 0x80+logical drive id.
478 * These is valid only for IO commands.
481 if (adapter
->support_random_del
&& adapter
->read_ldidmap
)
482 switch (cmd
->cmnd
[0]) {
483 case READ_6
: /* fall through */
484 case WRITE_6
: /* fall through */
485 case READ_10
: /* fall through */
495 * @adapter - pointer to our soft state
496 * @cmd - Prepare using this scsi command
497 * @busy - busy flag if no resources
499 * Prepares a command and scatter gather list for the controller. This routine
500 * also finds out if the commands is intended for a logical drive or a
501 * physical device and prepares the controller command accordingly.
503 * We also re-order the logical drives and physical devices based on their
507 mega_build_cmd(adapter_t
*adapter
, Scsi_Cmnd
*cmd
, int *busy
)
509 mega_ext_passthru
*epthru
;
510 mega_passthru
*pthru
;
518 int ldrv_num
= 0; /* logical drive number */
522 * filter the internal and ioctl commands
524 if((cmd
->cmnd
[0] == MEGA_INTERNAL_CMD
)) {
530 * We know what channels our logical drives are on - mega_find_card()
532 islogical
= adapter
->logdrv_chan
[cmd
->device
->channel
];
535 * The theory: If physical drive is chosen for boot, all the physical
536 * devices are exported before the logical drives, otherwise physical
537 * devices are pushed after logical drives, in which case - Kernel sees
538 * the physical devices on virtual channel which is obviously converted
539 * to actual channel on the HBA.
541 if( adapter
->boot_pdrv_enabled
) {
543 /* logical channel */
544 channel
= cmd
->device
->channel
-
545 adapter
->product_info
.nchannels
;
548 /* this is physical channel */
549 channel
= cmd
->device
->channel
;
550 target
= cmd
->device
->id
;
553 * boot from a physical disk, that disk needs to be
554 * exposed first IF both the channels are SCSI, then
555 * booting from the second channel is not allowed.
558 target
= adapter
->boot_pdrv_tgt
;
560 else if( target
== adapter
->boot_pdrv_tgt
) {
567 /* this is the logical channel */
568 channel
= cmd
->device
->channel
;
571 /* physical channel */
572 channel
= cmd
->device
->channel
- NVIRT_CHAN
;
573 target
= cmd
->device
->id
;
580 /* have just LUN 0 for each target on virtual channels */
581 if (cmd
->device
->lun
) {
582 cmd
->result
= (DID_BAD_TARGET
<< 16);
587 ldrv_num
= mega_get_ldrv_num(adapter
, cmd
, channel
);
590 max_ldrv_num
= (adapter
->flag
& BOARD_40LD
) ?
591 MAX_LOGICAL_DRIVES_40LD
: MAX_LOGICAL_DRIVES_8LD
;
594 * max_ldrv_num increases by 0x80 if some logical drive was
597 if(adapter
->read_ldidmap
)
598 max_ldrv_num
+= 0x80;
600 if(ldrv_num
> max_ldrv_num
) {
601 cmd
->result
= (DID_BAD_TARGET
<< 16);
608 if( cmd
->device
->lun
> 7) {
610 * Do not support lun >7 for physically accessed
613 cmd
->result
= (DID_BAD_TARGET
<< 16);
621 * Logical drive commands
625 switch (cmd
->cmnd
[0]) {
626 case TEST_UNIT_READY
:
627 #if MEGA_HAVE_CLUSTERING
629 * Do we support clustering and is the support enabled
630 * If no, return success always
632 if( !adapter
->has_cluster
) {
633 cmd
->result
= (DID_OK
<< 16);
638 if(!(scb
= mega_allocate_scb(adapter
, cmd
))) {
643 scb
->raw_mbox
[0] = MEGA_CLUSTER_CMD
;
644 scb
->raw_mbox
[2] = MEGA_RESERVATION_STATUS
;
645 scb
->raw_mbox
[3] = ldrv_num
;
647 scb
->dma_direction
= PCI_DMA_NONE
;
651 cmd
->result
= (DID_OK
<< 16);
660 struct scatterlist
*sg
;
662 sg
= (struct scatterlist
*)cmd
->request_buffer
;
663 buf
= kmap_atomic(sg
->page
, KM_IRQ0
) +
666 buf
= cmd
->request_buffer
;
667 memset(cmd
->request_buffer
, 0, cmd
->cmnd
[4]);
669 struct scatterlist
*sg
;
671 sg
= (struct scatterlist
*)cmd
->request_buffer
;
672 kunmap_atomic(buf
- sg
->offset
, KM_IRQ0
);
674 cmd
->result
= (DID_OK
<< 16);
682 if(!(adapter
->flag
& (1L << cmd
->device
->channel
))) {
685 "scsi%d: scanning scsi channel %d ",
686 adapter
->host
->host_no
,
687 cmd
->device
->channel
);
688 printk("for logical drives.\n");
690 adapter
->flag
|= (1L << cmd
->device
->channel
);
693 /* Allocate a SCB and initialize passthru */
694 if(!(scb
= mega_allocate_scb(adapter
, cmd
))) {
700 mbox
= (mbox_t
*)scb
->raw_mbox
;
701 memset(mbox
, 0, sizeof(scb
->raw_mbox
));
702 memset(pthru
, 0, sizeof(mega_passthru
));
706 pthru
->reqsenselen
= 14;
707 pthru
->islogical
= 1;
708 pthru
->logdrv
= ldrv_num
;
709 pthru
->cdblen
= cmd
->cmd_len
;
710 memcpy(pthru
->cdb
, cmd
->cmnd
, cmd
->cmd_len
);
712 if( adapter
->has_64bit_addr
) {
713 mbox
->m_out
.cmd
= MEGA_MBOXCMD_PASSTHRU64
;
716 mbox
->m_out
.cmd
= MEGA_MBOXCMD_PASSTHRU
;
719 scb
->dma_direction
= PCI_DMA_FROMDEVICE
;
721 pthru
->numsgelements
= mega_build_sglist(adapter
, scb
,
722 &pthru
->dataxferaddr
, &pthru
->dataxferlen
);
724 mbox
->m_out
.xferaddr
= scb
->pthru_dma_addr
;
735 /* Allocate a SCB and initialize mailbox */
736 if(!(scb
= mega_allocate_scb(adapter
, cmd
))) {
740 mbox
= (mbox_t
*)scb
->raw_mbox
;
742 memset(mbox
, 0, sizeof(scb
->raw_mbox
));
743 mbox
->m_out
.logdrv
= ldrv_num
;
746 * A little hack: 2nd bit is zero for all scsi read
747 * commands and is set for all scsi write commands
749 if( adapter
->has_64bit_addr
) {
750 mbox
->m_out
.cmd
= (*cmd
->cmnd
& 0x02) ?
751 MEGA_MBOXCMD_LWRITE64
:
752 MEGA_MBOXCMD_LREAD64
;
755 mbox
->m_out
.cmd
= (*cmd
->cmnd
& 0x02) ?
761 * 6-byte READ(0x08) or WRITE(0x0A) cdb
763 if( cmd
->cmd_len
== 6 ) {
764 mbox
->m_out
.numsectors
= (u32
) cmd
->cmnd
[4];
766 ((u32
)cmd
->cmnd
[1] << 16) |
767 ((u32
)cmd
->cmnd
[2] << 8) |
770 mbox
->m_out
.lba
&= 0x1FFFFF;
774 * Take modulo 0x80, since the logical drive
775 * number increases by 0x80 when a logical
778 if (*cmd
->cmnd
== READ_6
) {
779 adapter
->nreads
[ldrv_num
%0x80]++;
780 adapter
->nreadblocks
[ldrv_num
%0x80] +=
781 mbox
->m_out
.numsectors
;
783 adapter
->nwrites
[ldrv_num
%0x80]++;
784 adapter
->nwriteblocks
[ldrv_num
%0x80] +=
785 mbox
->m_out
.numsectors
;
791 * 10-byte READ(0x28) or WRITE(0x2A) cdb
793 if( cmd
->cmd_len
== 10 ) {
794 mbox
->m_out
.numsectors
=
796 ((u32
)cmd
->cmnd
[7] << 8);
798 ((u32
)cmd
->cmnd
[2] << 24) |
799 ((u32
)cmd
->cmnd
[3] << 16) |
800 ((u32
)cmd
->cmnd
[4] << 8) |
804 if (*cmd
->cmnd
== READ_10
) {
805 adapter
->nreads
[ldrv_num
%0x80]++;
806 adapter
->nreadblocks
[ldrv_num
%0x80] +=
807 mbox
->m_out
.numsectors
;
809 adapter
->nwrites
[ldrv_num
%0x80]++;
810 adapter
->nwriteblocks
[ldrv_num
%0x80] +=
811 mbox
->m_out
.numsectors
;
817 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
819 if( cmd
->cmd_len
== 12 ) {
821 ((u32
)cmd
->cmnd
[2] << 24) |
822 ((u32
)cmd
->cmnd
[3] << 16) |
823 ((u32
)cmd
->cmnd
[4] << 8) |
826 mbox
->m_out
.numsectors
=
827 ((u32
)cmd
->cmnd
[6] << 24) |
828 ((u32
)cmd
->cmnd
[7] << 16) |
829 ((u32
)cmd
->cmnd
[8] << 8) |
833 if (*cmd
->cmnd
== READ_12
) {
834 adapter
->nreads
[ldrv_num
%0x80]++;
835 adapter
->nreadblocks
[ldrv_num
%0x80] +=
836 mbox
->m_out
.numsectors
;
838 adapter
->nwrites
[ldrv_num
%0x80]++;
839 adapter
->nwriteblocks
[ldrv_num
%0x80] +=
840 mbox
->m_out
.numsectors
;
846 * If it is a read command
848 if( (*cmd
->cmnd
& 0x0F) == 0x08 ) {
849 scb
->dma_direction
= PCI_DMA_FROMDEVICE
;
852 scb
->dma_direction
= PCI_DMA_TODEVICE
;
855 /* Calculate Scatter-Gather info */
856 mbox
->m_out
.numsgelements
= mega_build_sglist(adapter
, scb
,
857 (u32
*)&mbox
->m_out
.xferaddr
, (u32
*)&seg
);
861 #if MEGA_HAVE_CLUSTERING
862 case RESERVE
: /* Fall through */
866 * Do we support clustering and is the support enabled
868 if( ! adapter
->has_cluster
) {
870 cmd
->result
= (DID_BAD_TARGET
<< 16);
875 /* Allocate a SCB and initialize mailbox */
876 if(!(scb
= mega_allocate_scb(adapter
, cmd
))) {
881 scb
->raw_mbox
[0] = MEGA_CLUSTER_CMD
;
882 scb
->raw_mbox
[2] = ( *cmd
->cmnd
== RESERVE
) ?
883 MEGA_RESERVE_LD
: MEGA_RELEASE_LD
;
885 scb
->raw_mbox
[3] = ldrv_num
;
887 scb
->dma_direction
= PCI_DMA_NONE
;
893 cmd
->result
= (DID_BAD_TARGET
<< 16);
900 * Passthru drive commands
903 /* Allocate a SCB and initialize passthru */
904 if(!(scb
= mega_allocate_scb(adapter
, cmd
))) {
909 mbox
= (mbox_t
*)scb
->raw_mbox
;
910 memset(mbox
, 0, sizeof(scb
->raw_mbox
));
912 if( adapter
->support_ext_cdb
) {
914 epthru
= mega_prepare_extpassthru(adapter
, scb
, cmd
,
917 mbox
->m_out
.cmd
= MEGA_MBOXCMD_EXTPTHRU
;
919 mbox
->m_out
.xferaddr
= scb
->epthru_dma_addr
;
924 pthru
= mega_prepare_passthru(adapter
, scb
, cmd
,
927 /* Initialize mailbox */
928 if( adapter
->has_64bit_addr
) {
929 mbox
->m_out
.cmd
= MEGA_MBOXCMD_PASSTHRU64
;
932 mbox
->m_out
.cmd
= MEGA_MBOXCMD_PASSTHRU
;
935 mbox
->m_out
.xferaddr
= scb
->pthru_dma_addr
;
945 * mega_prepare_passthru()
946 * @adapter - pointer to our soft state
947 * @scb - our scsi control block
948 * @cmd - scsi command from the mid-layer
949 * @channel - actual channel on the controller
950 * @target - actual id on the controller.
952 * prepare a command for the scsi physical devices.
954 static mega_passthru
*
955 mega_prepare_passthru(adapter_t
*adapter
, scb_t
*scb
, Scsi_Cmnd
*cmd
,
956 int channel
, int target
)
958 mega_passthru
*pthru
;
961 memset(pthru
, 0, sizeof (mega_passthru
));
963 /* 0=6sec/1=60sec/2=10min/3=3hrs */
967 pthru
->reqsenselen
= 14;
968 pthru
->islogical
= 0;
970 pthru
->channel
= (adapter
->flag
& BOARD_40LD
) ? 0 : channel
;
972 pthru
->target
= (adapter
->flag
& BOARD_40LD
) ?
973 (channel
<< 4) | target
: target
;
975 pthru
->cdblen
= cmd
->cmd_len
;
976 pthru
->logdrv
= cmd
->device
->lun
;
978 memcpy(pthru
->cdb
, cmd
->cmnd
, cmd
->cmd_len
);
980 /* Not sure about the direction */
981 scb
->dma_direction
= PCI_DMA_BIDIRECTIONAL
;
983 /* Special Code for Handling READ_CAPA/ INQ using bounce buffers */
984 switch (cmd
->cmnd
[0]) {
987 if(!(adapter
->flag
& (1L << cmd
->device
->channel
))) {
990 "scsi%d: scanning scsi channel %d [P%d] ",
991 adapter
->host
->host_no
,
992 cmd
->device
->channel
, channel
);
993 printk("for physical devices.\n");
995 adapter
->flag
|= (1L << cmd
->device
->channel
);
999 pthru
->numsgelements
= mega_build_sglist(adapter
, scb
,
1000 &pthru
->dataxferaddr
, &pthru
->dataxferlen
);
1008 * mega_prepare_extpassthru()
1009 * @adapter - pointer to our soft state
1010 * @scb - our scsi control block
1011 * @cmd - scsi command from the mid-layer
1012 * @channel - actual channel on the controller
1013 * @target - actual id on the controller.
1015 * prepare a command for the scsi physical devices. This rountine prepares
1016 * commands for devices which can take extended CDBs (>10 bytes)
1018 static mega_ext_passthru
*
1019 mega_prepare_extpassthru(adapter_t
*adapter
, scb_t
*scb
, Scsi_Cmnd
*cmd
,
1020 int channel
, int target
)
1022 mega_ext_passthru
*epthru
;
1024 epthru
= scb
->epthru
;
1025 memset(epthru
, 0, sizeof(mega_ext_passthru
));
1027 /* 0=6sec/1=60sec/2=10min/3=3hrs */
1028 epthru
->timeout
= 2;
1031 epthru
->reqsenselen
= 14;
1032 epthru
->islogical
= 0;
1034 epthru
->channel
= (adapter
->flag
& BOARD_40LD
) ? 0 : channel
;
1035 epthru
->target
= (adapter
->flag
& BOARD_40LD
) ?
1036 (channel
<< 4) | target
: target
;
1038 epthru
->cdblen
= cmd
->cmd_len
;
1039 epthru
->logdrv
= cmd
->device
->lun
;
1041 memcpy(epthru
->cdb
, cmd
->cmnd
, cmd
->cmd_len
);
1043 /* Not sure about the direction */
1044 scb
->dma_direction
= PCI_DMA_BIDIRECTIONAL
;
1046 switch(cmd
->cmnd
[0]) {
1049 if(!(adapter
->flag
& (1L << cmd
->device
->channel
))) {
1052 "scsi%d: scanning scsi channel %d [P%d] ",
1053 adapter
->host
->host_no
,
1054 cmd
->device
->channel
, channel
);
1055 printk("for physical devices.\n");
1057 adapter
->flag
|= (1L << cmd
->device
->channel
);
1061 epthru
->numsgelements
= mega_build_sglist(adapter
, scb
,
1062 &epthru
->dataxferaddr
, &epthru
->dataxferlen
);
1070 __mega_runpendq(adapter_t
*adapter
)
1073 struct list_head
*pos
, *next
;
1075 /* Issue any pending commands to the card */
1076 list_for_each_safe(pos
, next
, &adapter
->pending_list
) {
1078 scb
= list_entry(pos
, scb_t
, list
);
1080 if( !(scb
->state
& SCB_ISSUED
) ) {
1082 if( issue_scb(adapter
, scb
) != 0 )
1093 * @adapter - pointer to our soft state
1094 * @scb - scsi control block
1096 * Post a command to the card if the mailbox is available, otherwise return
1097 * busy. We also take the scb from the pending list if the mailbox is
1101 issue_scb(adapter_t
*adapter
, scb_t
*scb
)
1103 volatile mbox64_t
*mbox64
= adapter
->mbox64
;
1104 volatile mbox_t
*mbox
= adapter
->mbox
;
1107 if(unlikely(mbox
->m_in
.busy
)) {
1111 } while( mbox
->m_in
.busy
&& (i
< max_mbox_busy_wait
) );
1113 if(mbox
->m_in
.busy
) return -1;
1116 /* Copy mailbox data into host structure */
1117 memcpy((char *)&mbox
->m_out
, (char *)scb
->raw_mbox
,
1118 sizeof(struct mbox_out
));
1120 mbox
->m_out
.cmdid
= scb
->idx
; /* Set cmdid */
1121 mbox
->m_in
.busy
= 1; /* Set busy */
1125 * Increment the pending queue counter
1127 atomic_inc(&adapter
->pend_cmds
);
1129 switch (mbox
->m_out
.cmd
) {
1130 case MEGA_MBOXCMD_LREAD64
:
1131 case MEGA_MBOXCMD_LWRITE64
:
1132 case MEGA_MBOXCMD_PASSTHRU64
:
1133 case MEGA_MBOXCMD_EXTPTHRU
:
1134 mbox64
->xfer_segment_lo
= mbox
->m_out
.xferaddr
;
1135 mbox64
->xfer_segment_hi
= 0;
1136 mbox
->m_out
.xferaddr
= 0xFFFFFFFF;
1139 mbox64
->xfer_segment_lo
= 0;
1140 mbox64
->xfer_segment_hi
= 0;
1146 scb
->state
|= SCB_ISSUED
;
1148 if( likely(adapter
->flag
& BOARD_MEMMAP
) ) {
1149 mbox
->m_in
.poll
= 0;
1151 WRINDOOR(adapter
, adapter
->mbox_dma
| 0x1);
1154 irq_enable(adapter
);
1155 issue_command(adapter
);
1162 * Wait until the controller's mailbox is available
1165 mega_busywait_mbox (adapter_t
*adapter
)
1167 if (adapter
->mbox
->m_in
.busy
)
1168 return __mega_busywait_mbox(adapter
);
1174 * @adapter - pointer to our soft state
1175 * @raw_mbox - the mailbox
1177 * Issue a scb in synchronous and non-interrupt mode
1180 issue_scb_block(adapter_t
*adapter
, u_char
*raw_mbox
)
1182 volatile mbox64_t
*mbox64
= adapter
->mbox64
;
1183 volatile mbox_t
*mbox
= adapter
->mbox
;
1186 /* Wait until mailbox is free */
1187 if(mega_busywait_mbox (adapter
))
1188 goto bug_blocked_mailbox
;
1190 /* Copy mailbox data into host structure */
1191 memcpy((char *) mbox
, raw_mbox
, sizeof(struct mbox_out
));
1192 mbox
->m_out
.cmdid
= 0xFE;
1193 mbox
->m_in
.busy
= 1;
1195 switch (raw_mbox
[0]) {
1196 case MEGA_MBOXCMD_LREAD64
:
1197 case MEGA_MBOXCMD_LWRITE64
:
1198 case MEGA_MBOXCMD_PASSTHRU64
:
1199 case MEGA_MBOXCMD_EXTPTHRU
:
1200 mbox64
->xfer_segment_lo
= mbox
->m_out
.xferaddr
;
1201 mbox64
->xfer_segment_hi
= 0;
1202 mbox
->m_out
.xferaddr
= 0xFFFFFFFF;
1205 mbox64
->xfer_segment_lo
= 0;
1206 mbox64
->xfer_segment_hi
= 0;
1209 if( likely(adapter
->flag
& BOARD_MEMMAP
) ) {
1210 mbox
->m_in
.poll
= 0;
1212 mbox
->m_in
.numstatus
= 0xFF;
1213 mbox
->m_in
.status
= 0xFF;
1214 WRINDOOR(adapter
, adapter
->mbox_dma
| 0x1);
1216 while((volatile u8
)mbox
->m_in
.numstatus
== 0xFF)
1219 mbox
->m_in
.numstatus
= 0xFF;
1221 while( (volatile u8
)mbox
->m_in
.poll
!= 0x77 )
1224 mbox
->m_in
.poll
= 0;
1225 mbox
->m_in
.ack
= 0x77;
1227 WRINDOOR(adapter
, adapter
->mbox_dma
| 0x2);
1229 while(RDINDOOR(adapter
) & 0x2)
1233 irq_disable(adapter
);
1234 issue_command(adapter
);
1236 while (!((byte
= irq_state(adapter
)) & INTR_VALID
))
1239 set_irq_state(adapter
, byte
);
1240 irq_enable(adapter
);
1244 return mbox
->m_in
.status
;
1246 bug_blocked_mailbox
:
1247 printk(KERN_WARNING
"megaraid: Blocked mailbox......!!\n");
1254 * megaraid_isr_iomapped()
1256 * @devp - pointer to our soft state
1259 * Interrupt service routine for io-mapped controllers.
1260 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1261 * and service the completed commands.
1264 megaraid_isr_iomapped(int irq
, void *devp
, struct pt_regs
*regs
)
1266 adapter_t
*adapter
= devp
;
1267 unsigned long flags
;
1270 u8 completed
[MAX_FIRMWARE_STATUS
];
1276 * loop till F/W has more commands for us to complete.
1278 spin_lock_irqsave(&adapter
->lock
, flags
);
1281 /* Check if a valid interrupt is pending */
1282 byte
= irq_state(adapter
);
1283 if( (byte
& VALID_INTR_BYTE
) == 0 ) {
1285 * No more pending commands
1289 set_irq_state(adapter
, byte
);
1291 while((nstatus
= (volatile u8
)adapter
->mbox
->m_in
.numstatus
)
1294 adapter
->mbox
->m_in
.numstatus
= 0xFF;
1296 status
= adapter
->mbox
->m_in
.status
;
1299 * decrement the pending queue counter
1301 atomic_sub(nstatus
, &adapter
->pend_cmds
);
1303 memcpy(completed
, (void *)adapter
->mbox
->m_in
.completed
,
1306 /* Acknowledge interrupt */
1309 mega_cmd_done(adapter
, completed
, nstatus
, status
);
1311 mega_rundoneq(adapter
);
1315 /* Loop through any pending requests */
1316 if(atomic_read(&adapter
->quiescent
) == 0) {
1317 mega_runpendq(adapter
);
1324 spin_unlock_irqrestore(&adapter
->lock
, flags
);
1326 return IRQ_RETVAL(handled
);
1331 * megaraid_isr_memmapped()
1333 * @devp - pointer to our soft state
1336 * Interrupt service routine for memory-mapped controllers.
1337 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1338 * and service the completed commands.
1341 megaraid_isr_memmapped(int irq
, void *devp
, struct pt_regs
*regs
)
1343 adapter_t
*adapter
= devp
;
1344 unsigned long flags
;
1348 u8 completed
[MAX_FIRMWARE_STATUS
];
1353 * loop till F/W has more commands for us to complete.
1355 spin_lock_irqsave(&adapter
->lock
, flags
);
1358 /* Check if a valid interrupt is pending */
1359 dword
= RDOUTDOOR(adapter
);
1360 if(dword
!= 0x10001234) {
1362 * No more pending commands
1366 WROUTDOOR(adapter
, 0x10001234);
1368 while((nstatus
= (volatile u8
)adapter
->mbox
->m_in
.numstatus
)
1372 adapter
->mbox
->m_in
.numstatus
= 0xFF;
1374 status
= adapter
->mbox
->m_in
.status
;
1377 * decrement the pending queue counter
1379 atomic_sub(nstatus
, &adapter
->pend_cmds
);
1381 memcpy(completed
, (void *)adapter
->mbox
->m_in
.completed
,
1384 /* Acknowledge interrupt */
1385 WRINDOOR(adapter
, 0x2);
1389 while( RDINDOOR(adapter
) & 0x02 ) cpu_relax();
1391 mega_cmd_done(adapter
, completed
, nstatus
, status
);
1393 mega_rundoneq(adapter
);
1395 /* Loop through any pending requests */
1396 if(atomic_read(&adapter
->quiescent
) == 0) {
1397 mega_runpendq(adapter
);
1404 spin_unlock_irqrestore(&adapter
->lock
, flags
);
1406 return IRQ_RETVAL(handled
);
1410 * @adapter - pointer to our soft state
1411 * @completed - array of ids of completed commands
1412 * @nstatus - number of completed commands
1413 * @status - status of the last command completed
1415 * Complete the comamnds and call the scsi mid-layer callback hooks.
1418 mega_cmd_done(adapter_t
*adapter
, u8 completed
[], int nstatus
, int status
)
1420 mega_ext_passthru
*epthru
= NULL
;
1421 struct scatterlist
*sgl
;
1422 Scsi_Cmnd
*cmd
= NULL
;
1423 mega_passthru
*pthru
= NULL
;
1424 mbox_t
*mbox
= NULL
;
1432 * for all the commands completed, call the mid-layer callback routine
1435 for( i
= 0; i
< nstatus
; i
++ ) {
1437 cmdid
= completed
[i
];
1439 if( cmdid
== CMDID_INT_CMDS
) { /* internal command */
1440 scb
= &adapter
->int_scb
;
1442 mbox
= (mbox_t
*)scb
->raw_mbox
;
1445 * Internal command interface do not fire the extended
1446 * passthru or 64-bit passthru
1452 scb
= &adapter
->scb_list
[cmdid
];
1455 * Make sure f/w has completed a valid command
1457 if( !(scb
->state
& SCB_ISSUED
) || scb
->cmd
== NULL
) {
1459 "megaraid: invalid command ");
1460 printk("Id %d, scb->state:%x, scsi cmd:%p\n",
1461 cmdid
, scb
->state
, scb
->cmd
);
1467 * Was a abort issued for this command
1469 if( scb
->state
& SCB_ABORT
) {
1472 "megaraid: aborted cmd %lx[%x] complete.\n",
1473 scb
->cmd
->serial_number
, scb
->idx
);
1475 scb
->cmd
->result
= (DID_ABORT
<< 16);
1477 list_add_tail(SCSI_LIST(scb
->cmd
),
1478 &adapter
->completed_list
);
1480 mega_free_scb(adapter
, scb
);
1486 * Was a reset issued for this command
1488 if( scb
->state
& SCB_RESET
) {
1491 "megaraid: reset cmd %lx[%x] complete.\n",
1492 scb
->cmd
->serial_number
, scb
->idx
);
1494 scb
->cmd
->result
= (DID_RESET
<< 16);
1496 list_add_tail(SCSI_LIST(scb
->cmd
),
1497 &adapter
->completed_list
);
1499 mega_free_scb (adapter
, scb
);
1506 epthru
= scb
->epthru
;
1507 mbox
= (mbox_t
*)scb
->raw_mbox
;
1512 int logdrv
= mbox
->m_out
.logdrv
;
1514 islogical
= adapter
->logdrv_chan
[cmd
->channel
];
1516 * Maintain an error counter for the logical drive.
1517 * Some application like SNMP agent need such
1520 if( status
&& islogical
&& (cmd
->cmnd
[0] == READ_6
||
1521 cmd
->cmnd
[0] == READ_10
||
1522 cmd
->cmnd
[0] == READ_12
)) {
1524 * Logical drive number increases by 0x80 when
1525 * a logical drive is deleted
1527 adapter
->rd_errors
[logdrv
%0x80]++;
1530 if( status
&& islogical
&& (cmd
->cmnd
[0] == WRITE_6
||
1531 cmd
->cmnd
[0] == WRITE_10
||
1532 cmd
->cmnd
[0] == WRITE_12
)) {
1534 * Logical drive number increases by 0x80 when
1535 * a logical drive is deleted
1537 adapter
->wr_errors
[logdrv
%0x80]++;
1545 * Do not return the presence of hard disk on the channel so,
1546 * inquiry sent, and returned data==hard disk or removable
1547 * hard disk and not logical, request should return failure! -
1550 islogical
= adapter
->logdrv_chan
[cmd
->device
->channel
];
1551 if( cmd
->cmnd
[0] == INQUIRY
&& !islogical
) {
1554 sgl
= (struct scatterlist
*)
1555 cmd
->request_buffer
;
1558 c
= *(unsigned char *)
1559 page_address((&sgl
[0])->page
) +
1564 "megaraid: invalid sg.\n");
1569 c
= *(u8
*)cmd
->request_buffer
;
1572 if(IS_RAID_CH(adapter
, cmd
->device
->channel
) &&
1573 ((c
& 0x1F ) == TYPE_DISK
)) {
1578 /* clear result; otherwise, success returns corrupt value */
1581 /* Convert MegaRAID status to Linux error code */
1583 case 0x00: /* SUCCESS , i.e. SCSI_STATUS_GOOD */
1584 cmd
->result
|= (DID_OK
<< 16);
1587 case 0x02: /* ERROR_ABORTED, i.e.
1588 SCSI_STATUS_CHECK_CONDITION */
1590 /* set sense_buffer and result fields */
1591 if( mbox
->m_out
.cmd
== MEGA_MBOXCMD_PASSTHRU
||
1592 mbox
->m_out
.cmd
== MEGA_MBOXCMD_PASSTHRU64
) {
1594 memcpy(cmd
->sense_buffer
, pthru
->reqsensearea
,
1597 cmd
->result
= (DRIVER_SENSE
<< 24) |
1599 (CHECK_CONDITION
<< 1);
1602 if (mbox
->m_out
.cmd
== MEGA_MBOXCMD_EXTPTHRU
) {
1604 memcpy(cmd
->sense_buffer
,
1605 epthru
->reqsensearea
, 14);
1607 cmd
->result
= (DRIVER_SENSE
<< 24) |
1609 (CHECK_CONDITION
<< 1);
1611 cmd
->sense_buffer
[0] = 0x70;
1612 cmd
->sense_buffer
[2] = ABORTED_COMMAND
;
1613 cmd
->result
|= (CHECK_CONDITION
<< 1);
1618 case 0x08: /* ERR_DEST_DRIVE_FAILED, i.e.
1620 cmd
->result
|= (DID_BUS_BUSY
<< 16) | status
;
1624 #if MEGA_HAVE_CLUSTERING
1626 * If TEST_UNIT_READY fails, we know
1627 * MEGA_RESERVATION_STATUS failed
1629 if( cmd
->cmnd
[0] == TEST_UNIT_READY
) {
1630 cmd
->result
|= (DID_ERROR
<< 16) |
1631 (RESERVATION_CONFLICT
<< 1);
1635 * Error code returned is 1 if Reserve or Release
1636 * failed or the input parameter is invalid
1639 (cmd
->cmnd
[0] == RESERVE
||
1640 cmd
->cmnd
[0] == RELEASE
) ) {
1642 cmd
->result
|= (DID_ERROR
<< 16) |
1643 (RESERVATION_CONFLICT
<< 1);
1647 cmd
->result
|= (DID_BAD_TARGET
<< 16)|status
;
1651 * Only free SCBs for the commands coming down from the
1652 * mid-layer, not for which were issued internally
1654 * For internal command, restore the status returned by the
1655 * firmware so that user can interpret it.
1657 if( cmdid
== CMDID_INT_CMDS
) { /* internal command */
1658 cmd
->result
= status
;
1661 * Remove the internal command from the pending list
1663 list_del_init(&scb
->list
);
1664 scb
->state
= SCB_FREE
;
1667 mega_free_scb(adapter
, scb
);
1670 /* Add Scsi_Command to end of completed queue */
1671 list_add_tail(SCSI_LIST(cmd
), &adapter
->completed_list
);
1679 * Run through the list of completed requests and finish it
1682 mega_rundoneq (adapter_t
*adapter
)
1685 struct list_head
*pos
;
1687 list_for_each(pos
, &adapter
->completed_list
) {
1689 struct scsi_pointer
* spos
= (struct scsi_pointer
*)pos
;
1691 cmd
= list_entry(spos
, Scsi_Cmnd
, SCp
);
1692 cmd
->scsi_done(cmd
);
1695 INIT_LIST_HEAD(&adapter
->completed_list
);
1700 * Free a SCB structure
1701 * Note: We assume the scsi commands associated with this scb is not free yet.
1704 mega_free_scb(adapter_t
*adapter
, scb_t
*scb
)
1706 unsigned long length
;
1708 switch( scb
->dma_type
) {
1710 case MEGA_DMA_TYPE_NONE
:
1713 case MEGA_BULK_DATA
:
1714 if (scb
->cmd
->use_sg
== 0)
1715 length
= scb
->cmd
->request_bufflen
;
1717 struct scatterlist
*sgl
=
1718 (struct scatterlist
*)scb
->cmd
->request_buffer
;
1719 length
= sgl
->length
;
1721 pci_unmap_page(adapter
->dev
, scb
->dma_h_bulkdata
,
1722 length
, scb
->dma_direction
);
1726 pci_unmap_sg(adapter
->dev
, scb
->cmd
->request_buffer
,
1727 scb
->cmd
->use_sg
, scb
->dma_direction
);
1735 * Remove from the pending list
1737 list_del_init(&scb
->list
);
1739 /* Link the scb back into free list */
1740 scb
->state
= SCB_FREE
;
1743 list_add(&scb
->list
, &adapter
->free_list
);
1748 __mega_busywait_mbox (adapter_t
*adapter
)
1750 volatile mbox_t
*mbox
= adapter
->mbox
;
1753 for (counter
= 0; counter
< 10000; counter
++) {
1754 if (!mbox
->m_in
.busy
)
1756 udelay(100); yield();
1758 return -1; /* give up after 1 second */
1762 * Copies data to SGLIST
1763 * Note: For 64 bit cards, we need a minimum of one SG element for read/write
1766 mega_build_sglist(adapter_t
*adapter
, scb_t
*scb
, u32
*buf
, u32
*len
)
1768 struct scatterlist
*sgl
;
1770 unsigned long offset
;
1771 unsigned int length
;
1778 /* Scatter-gather not used */
1779 if( cmd
->use_sg
== 0 || (cmd
->use_sg
== 1 &&
1780 !adapter
->has_64bit_addr
)) {
1782 if (cmd
->use_sg
== 0) {
1783 page
= virt_to_page(cmd
->request_buffer
);
1784 offset
= offset_in_page(cmd
->request_buffer
);
1785 length
= cmd
->request_bufflen
;
1787 sgl
= (struct scatterlist
*)cmd
->request_buffer
;
1789 offset
= sgl
->offset
;
1790 length
= sgl
->length
;
1793 scb
->dma_h_bulkdata
= pci_map_page(adapter
->dev
,
1796 scb
->dma_direction
);
1797 scb
->dma_type
= MEGA_BULK_DATA
;
1800 * We need to handle special 64-bit commands that need a
1803 if( adapter
->has_64bit_addr
) {
1804 scb
->sgl64
[0].address
= scb
->dma_h_bulkdata
;
1805 scb
->sgl64
[0].length
= length
;
1806 *buf
= (u32
)scb
->sgl_dma_addr
;
1811 *buf
= (u32
)scb
->dma_h_bulkdata
;
1817 sgl
= (struct scatterlist
*)cmd
->request_buffer
;
1820 * Copy Scatter-Gather list info into controller structure.
1822 * The number of sg elements returned must not exceed our limit
1824 sgcnt
= pci_map_sg(adapter
->dev
, sgl
, cmd
->use_sg
,
1825 scb
->dma_direction
);
1827 scb
->dma_type
= MEGA_SGLIST
;
1829 if( sgcnt
> adapter
->sglen
) BUG();
1833 for( idx
= 0; idx
< sgcnt
; idx
++, sgl
++ ) {
1835 if( adapter
->has_64bit_addr
) {
1836 scb
->sgl64
[idx
].address
= sg_dma_address(sgl
);
1837 *len
+= scb
->sgl64
[idx
].length
= sg_dma_len(sgl
);
1840 scb
->sgl
[idx
].address
= sg_dma_address(sgl
);
1841 *len
+= scb
->sgl
[idx
].length
= sg_dma_len(sgl
);
1845 /* Reset pointer and length fields */
1846 *buf
= scb
->sgl_dma_addr
;
1848 /* Return count of SG requests */
1856 * takes all info in AdapterInquiry structure and puts it into ProductInfo and
1857 * Enquiry3 structures for later use
1860 mega_8_to_40ld(mraid_inquiry
*inquiry
, mega_inquiry3
*enquiry3
,
1861 mega_product_info
*product_info
)
1865 product_info
->max_commands
= inquiry
->adapter_info
.max_commands
;
1866 enquiry3
->rebuild_rate
= inquiry
->adapter_info
.rebuild_rate
;
1867 product_info
->nchannels
= inquiry
->adapter_info
.nchannels
;
1869 for (i
= 0; i
< 4; i
++) {
1870 product_info
->fw_version
[i
] =
1871 inquiry
->adapter_info
.fw_version
[i
];
1873 product_info
->bios_version
[i
] =
1874 inquiry
->adapter_info
.bios_version
[i
];
1876 enquiry3
->cache_flush_interval
=
1877 inquiry
->adapter_info
.cache_flush_interval
;
1879 product_info
->dram_size
= inquiry
->adapter_info
.dram_size
;
1881 enquiry3
->num_ldrv
= inquiry
->logdrv_info
.num_ldrv
;
1883 for (i
= 0; i
< MAX_LOGICAL_DRIVES_8LD
; i
++) {
1884 enquiry3
->ldrv_size
[i
] = inquiry
->logdrv_info
.ldrv_size
[i
];
1885 enquiry3
->ldrv_prop
[i
] = inquiry
->logdrv_info
.ldrv_prop
[i
];
1886 enquiry3
->ldrv_state
[i
] = inquiry
->logdrv_info
.ldrv_state
[i
];
1889 for (i
= 0; i
< (MAX_PHYSICAL_DRIVES
); i
++)
1890 enquiry3
->pdrv_state
[i
] = inquiry
->pdrv_info
.pdrv_state
[i
];
1894 mega_free_sgl(adapter_t
*adapter
)
1899 for(i
= 0; i
< adapter
->max_cmds
; i
++) {
1901 scb
= &adapter
->scb_list
[i
];
1904 pci_free_consistent(adapter
->dev
,
1905 sizeof(mega_sgl64
) * adapter
->sglen
,
1913 pci_free_consistent(adapter
->dev
, sizeof(mega_passthru
),
1914 scb
->pthru
, scb
->pthru_dma_addr
);
1920 pci_free_consistent(adapter
->dev
,
1921 sizeof(mega_ext_passthru
),
1922 scb
->epthru
, scb
->epthru_dma_addr
);
1932 * Get information about the card/driver
1935 megaraid_info(struct Scsi_Host
*host
)
1937 static char buffer
[512];
1940 adapter
= (adapter_t
*)host
->hostdata
;
1943 "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns",
1944 adapter
->fw_version
, adapter
->product_info
.max_commands
,
1945 adapter
->host
->max_id
, adapter
->host
->max_channel
,
1946 adapter
->host
->max_lun
);
1951 * Abort a previous SCSI request. Only commands on the pending list can be
1952 * aborted. All the commands issued to the F/W must complete.
1955 megaraid_abort(Scsi_Cmnd
*cmd
)
1960 adapter
= (adapter_t
*)cmd
->device
->host
->hostdata
;
1962 rval
= megaraid_abort_and_reset(adapter
, cmd
, SCB_ABORT
);
1965 * This is required here to complete any completed requests
1966 * to be communicated over to the mid layer.
1968 mega_rundoneq(adapter
);
1975 megaraid_reset(struct scsi_cmnd
*cmd
)
1981 adapter
= (adapter_t
*)cmd
->device
->host
->hostdata
;
1983 #if MEGA_HAVE_CLUSTERING
1984 mc
.cmd
= MEGA_CLUSTER_CMD
;
1985 mc
.opcode
= MEGA_RESET_RESERVATIONS
;
1987 if( mega_internal_command(adapter
, &mc
, NULL
) != 0 ) {
1989 "megaraid: reservation reset failed.\n");
1992 printk(KERN_INFO
"megaraid: reservation reset.\n");
1996 spin_lock_irq(&adapter
->lock
);
1998 rval
= megaraid_abort_and_reset(adapter
, cmd
, SCB_RESET
);
2001 * This is required here to complete any completed requests
2002 * to be communicated over to the mid layer.
2004 mega_rundoneq(adapter
);
2005 spin_unlock_irq(&adapter
->lock
);
2011 * megaraid_abort_and_reset()
2012 * @adapter - megaraid soft state
2013 * @cmd - scsi command to be aborted or reset
2014 * @aor - abort or reset flag
2016 * Try to locate the scsi command in the pending queue. If found and is not
2017 * issued to the controller, abort/reset it. Otherwise return failure
2020 megaraid_abort_and_reset(adapter_t
*adapter
, Scsi_Cmnd
*cmd
, int aor
)
2022 struct list_head
*pos
, *next
;
2025 printk(KERN_WARNING
"megaraid: %s-%lx cmd=%x <c=%d t=%d l=%d>\n",
2026 (aor
== SCB_ABORT
)? "ABORTING":"RESET", cmd
->serial_number
,
2027 cmd
->cmnd
[0], cmd
->device
->channel
,
2028 cmd
->device
->id
, cmd
->device
->lun
);
2030 if(list_empty(&adapter
->pending_list
))
2033 list_for_each_safe(pos
, next
, &adapter
->pending_list
) {
2035 scb
= list_entry(pos
, scb_t
, list
);
2037 if (scb
->cmd
== cmd
) { /* Found command */
2042 * Check if this command has firmare owenership. If
2043 * yes, we cannot reset this command. Whenever, f/w
2044 * completes this command, we will return appropriate
2047 if( scb
->state
& SCB_ISSUED
) {
2050 "megaraid: %s-%lx[%x], fw owner.\n",
2051 (aor
==SCB_ABORT
) ? "ABORTING":"RESET",
2052 cmd
->serial_number
, scb
->idx
);
2059 * Not yet issued! Remove from the pending
2063 "megaraid: %s-%lx[%x], driver owner.\n",
2064 (aor
==SCB_ABORT
) ? "ABORTING":"RESET",
2065 cmd
->serial_number
, scb
->idx
);
2067 mega_free_scb(adapter
, scb
);
2069 if( aor
== SCB_ABORT
) {
2070 cmd
->result
= (DID_ABORT
<< 16);
2073 cmd
->result
= (DID_RESET
<< 16);
2076 list_add_tail(SCSI_LIST(cmd
),
2077 &adapter
->completed_list
);
2088 make_local_pdev(adapter_t
*adapter
, struct pci_dev
**pdev
)
2090 *pdev
= kmalloc(sizeof(struct pci_dev
), GFP_KERNEL
);
2092 if( *pdev
== NULL
) return -1;
2094 memcpy(*pdev
, adapter
->dev
, sizeof(struct pci_dev
));
2096 if( pci_set_dma_mask(*pdev
, 0xffffffff) != 0 ) {
2105 free_local_pdev(struct pci_dev
*pdev
)
2111 * mega_allocate_inquiry()
2112 * @dma_handle - handle returned for dma address
2113 * @pdev - handle to pci device
2115 * allocates memory for inquiry structure
2117 static inline void *
2118 mega_allocate_inquiry(dma_addr_t
*dma_handle
, struct pci_dev
*pdev
)
2120 return pci_alloc_consistent(pdev
, sizeof(mega_inquiry3
), dma_handle
);
2125 mega_free_inquiry(void *inquiry
, dma_addr_t dma_handle
, struct pci_dev
*pdev
)
2127 pci_free_consistent(pdev
, sizeof(mega_inquiry3
), inquiry
, dma_handle
);
2131 #ifdef CONFIG_PROC_FS
2132 /* Following code handles /proc fs */
2134 #define CREATE_READ_PROC(string, func) create_proc_read_entry(string, \
2135 S_IRUSR | S_IFREG, \
2136 controller_proc_dir_entry, \
2140 * mega_create_proc_entry()
2141 * @index - index in soft state array
2142 * @parent - parent node for this /proc entry
2144 * Creates /proc entries for our controllers.
2147 mega_create_proc_entry(int index
, struct proc_dir_entry
*parent
)
2149 struct proc_dir_entry
*controller_proc_dir_entry
= NULL
;
2150 u8 string
[64] = { 0 };
2151 adapter_t
*adapter
= hba_soft_state
[index
];
2153 sprintf(string
, "hba%d", adapter
->host
->host_no
);
2155 controller_proc_dir_entry
=
2156 adapter
->controller_proc_dir_entry
= proc_mkdir(string
, parent
);
2158 if(!controller_proc_dir_entry
) {
2159 printk(KERN_WARNING
"\nmegaraid: proc_mkdir failed\n");
2162 adapter
->proc_read
= CREATE_READ_PROC("config", proc_read_config
);
2163 adapter
->proc_stat
= CREATE_READ_PROC("stat", proc_read_stat
);
2164 adapter
->proc_mbox
= CREATE_READ_PROC("mailbox", proc_read_mbox
);
2165 #if MEGA_HAVE_ENH_PROC
2166 adapter
->proc_rr
= CREATE_READ_PROC("rebuild-rate", proc_rebuild_rate
);
2167 adapter
->proc_battery
= CREATE_READ_PROC("battery-status",
2171 * Display each physical drive on its channel
2173 adapter
->proc_pdrvstat
[0] = CREATE_READ_PROC("diskdrives-ch0",
2175 adapter
->proc_pdrvstat
[1] = CREATE_READ_PROC("diskdrives-ch1",
2177 adapter
->proc_pdrvstat
[2] = CREATE_READ_PROC("diskdrives-ch2",
2179 adapter
->proc_pdrvstat
[3] = CREATE_READ_PROC("diskdrives-ch3",
2183 * Display a set of up to 10 logical drive through each of following
2186 adapter
->proc_rdrvstat
[0] = CREATE_READ_PROC("raiddrives-0-9",
2188 adapter
->proc_rdrvstat
[1] = CREATE_READ_PROC("raiddrives-10-19",
2190 adapter
->proc_rdrvstat
[2] = CREATE_READ_PROC("raiddrives-20-29",
2192 adapter
->proc_rdrvstat
[3] = CREATE_READ_PROC("raiddrives-30-39",
2199 * proc_read_config()
2200 * @page - buffer to write the data in
2201 * @start - where the actual data has been written in page
2202 * @offset - same meaning as the read system call
2203 * @count - same meaning as the read system call
2204 * @eof - set if no more data needs to be returned
2205 * @data - pointer to our soft state
2207 * Display configuration information about the controller.
2210 proc_read_config(char *page
, char **start
, off_t offset
, int count
, int *eof
,
2214 adapter_t
*adapter
= (adapter_t
*)data
;
2217 len
+= sprintf(page
+len
, "%s", MEGARAID_VERSION
);
2219 if(adapter
->product_info
.product_name
[0])
2220 len
+= sprintf(page
+len
, "%s\n",
2221 adapter
->product_info
.product_name
);
2223 len
+= sprintf(page
+len
, "Controller Type: ");
2225 if( adapter
->flag
& BOARD_MEMMAP
) {
2226 len
+= sprintf(page
+len
,
2227 "438/466/467/471/493/518/520/531/532\n");
2230 len
+= sprintf(page
+len
,
2234 if(adapter
->flag
& BOARD_40LD
) {
2235 len
+= sprintf(page
+len
,
2236 "Controller Supports 40 Logical Drives\n");
2239 if(adapter
->flag
& BOARD_64BIT
) {
2240 len
+= sprintf(page
+len
,
2241 "Controller capable of 64-bit memory addressing\n");
2243 if( adapter
->has_64bit_addr
) {
2244 len
+= sprintf(page
+len
,
2245 "Controller using 64-bit memory addressing\n");
2248 len
+= sprintf(page
+len
,
2249 "Controller is not using 64-bit memory addressing\n");
2252 len
+= sprintf(page
+len
, "Base = %08lx, Irq = %d, ", adapter
->base
,
2253 adapter
->host
->irq
);
2255 len
+= sprintf(page
+len
, "Logical Drives = %d, Channels = %d\n",
2256 adapter
->numldrv
, adapter
->product_info
.nchannels
);
2258 len
+= sprintf(page
+len
, "Version =%s:%s, DRAM = %dMb\n",
2259 adapter
->fw_version
, adapter
->bios_version
,
2260 adapter
->product_info
.dram_size
);
2262 len
+= sprintf(page
+len
,
2263 "Controller Queue Depth = %d, Driver Queue Depth = %d\n",
2264 adapter
->product_info
.max_commands
, adapter
->max_cmds
);
2266 len
+= sprintf(page
+len
, "support_ext_cdb = %d\n",
2267 adapter
->support_ext_cdb
);
2268 len
+= sprintf(page
+len
, "support_random_del = %d\n",
2269 adapter
->support_random_del
);
2270 len
+= sprintf(page
+len
, "boot_ldrv_enabled = %d\n",
2271 adapter
->boot_ldrv_enabled
);
2272 len
+= sprintf(page
+len
, "boot_ldrv = %d\n",
2273 adapter
->boot_ldrv
);
2274 len
+= sprintf(page
+len
, "boot_pdrv_enabled = %d\n",
2275 adapter
->boot_pdrv_enabled
);
2276 len
+= sprintf(page
+len
, "boot_pdrv_ch = %d\n",
2277 adapter
->boot_pdrv_ch
);
2278 len
+= sprintf(page
+len
, "boot_pdrv_tgt = %d\n",
2279 adapter
->boot_pdrv_tgt
);
2280 len
+= sprintf(page
+len
, "quiescent = %d\n",
2281 atomic_read(&adapter
->quiescent
));
2282 len
+= sprintf(page
+len
, "has_cluster = %d\n",
2283 adapter
->has_cluster
);
2285 len
+= sprintf(page
+len
, "\nModule Parameters:\n");
2286 len
+= sprintf(page
+len
, "max_cmd_per_lun = %d\n",
2288 len
+= sprintf(page
+len
, "max_sectors_per_io = %d\n",
2289 max_sectors_per_io
);
2300 * @page - buffer to write the data in
2301 * @start - where the actual data has been written in page
2302 * @offset - same meaning as the read system call
2303 * @count - same meaning as the read system call
2304 * @eof - set if no more data needs to be returned
2305 * @data - pointer to our soft state
2307 * Diaplay statistical information about the I/O activity.
2310 proc_read_stat(char *page
, char **start
, off_t offset
, int count
, int *eof
,
2317 i
= 0; /* avoid compilation warnings */
2319 adapter
= (adapter_t
*)data
;
2321 len
= sprintf(page
, "Statistical Information for this controller\n");
2322 len
+= sprintf(page
+len
, "pend_cmds = %d\n",
2323 atomic_read(&adapter
->pend_cmds
));
2325 for(i
= 0; i
< adapter
->numldrv
; i
++) {
2326 len
+= sprintf(page
+len
, "Logical Drive %d:\n", i
);
2328 len
+= sprintf(page
+len
,
2329 "\tReads Issued = %lu, Writes Issued = %lu\n",
2330 adapter
->nreads
[i
], adapter
->nwrites
[i
]);
2332 len
+= sprintf(page
+len
,
2333 "\tSectors Read = %lu, Sectors Written = %lu\n",
2334 adapter
->nreadblocks
[i
], adapter
->nwriteblocks
[i
]);
2336 len
+= sprintf(page
+len
,
2337 "\tRead errors = %lu, Write errors = %lu\n\n",
2338 adapter
->rd_errors
[i
], adapter
->wr_errors
[i
]);
2341 len
+= sprintf(page
+len
,
2342 "IO and error counters not compiled in driver.\n");
2353 * @page - buffer to write the data in
2354 * @start - where the actual data has been written in page
2355 * @offset - same meaning as the read system call
2356 * @count - same meaning as the read system call
2357 * @eof - set if no more data needs to be returned
2358 * @data - pointer to our soft state
2360 * Display mailbox information for the last command issued. This information
2361 * is good for debugging.
2364 proc_read_mbox(char *page
, char **start
, off_t offset
, int count
, int *eof
,
2368 adapter_t
*adapter
= (adapter_t
*)data
;
2369 volatile mbox_t
*mbox
= adapter
->mbox
;
2372 len
= sprintf(page
, "Contents of Mail Box Structure\n");
2373 len
+= sprintf(page
+len
, " Fw Command = 0x%02x\n",
2375 len
+= sprintf(page
+len
, " Cmd Sequence = 0x%02x\n",
2377 len
+= sprintf(page
+len
, " No of Sectors= %04d\n",
2378 mbox
->m_out
.numsectors
);
2379 len
+= sprintf(page
+len
, " LBA = 0x%02x\n",
2381 len
+= sprintf(page
+len
, " DTA = 0x%08x\n",
2382 mbox
->m_out
.xferaddr
);
2383 len
+= sprintf(page
+len
, " Logical Drive= 0x%02x\n",
2384 mbox
->m_out
.logdrv
);
2385 len
+= sprintf(page
+len
, " No of SG Elmt= 0x%02x\n",
2386 mbox
->m_out
.numsgelements
);
2387 len
+= sprintf(page
+len
, " Busy = %01x\n",
2389 len
+= sprintf(page
+len
, " Status = 0x%02x\n",
2399 * proc_rebuild_rate()
2400 * @page - buffer to write the data in
2401 * @start - where the actual data has been written in page
2402 * @offset - same meaning as the read system call
2403 * @count - same meaning as the read system call
2404 * @eof - set if no more data needs to be returned
2405 * @data - pointer to our soft state
2407 * Display current rebuild rate
2410 proc_rebuild_rate(char *page
, char **start
, off_t offset
, int count
, int *eof
,
2413 adapter_t
*adapter
= (adapter_t
*)data
;
2414 dma_addr_t dma_handle
;
2416 struct pci_dev
*pdev
;
2419 if( make_local_pdev(adapter
, &pdev
) != 0 ) {
2424 if( (inquiry
= mega_allocate_inquiry(&dma_handle
, pdev
)) == NULL
) {
2425 free_local_pdev(pdev
);
2430 if( mega_adapinq(adapter
, dma_handle
) != 0 ) {
2432 len
= sprintf(page
, "Adapter inquiry failed.\n");
2434 printk(KERN_WARNING
"megaraid: inquiry failed.\n");
2436 mega_free_inquiry(inquiry
, dma_handle
, pdev
);
2438 free_local_pdev(pdev
);
2445 if( adapter
->flag
& BOARD_40LD
) {
2446 len
= sprintf(page
, "Rebuild Rate: [%d%%]\n",
2447 ((mega_inquiry3
*)inquiry
)->rebuild_rate
);
2450 len
= sprintf(page
, "Rebuild Rate: [%d%%]\n",
2451 ((mraid_ext_inquiry
*)
2452 inquiry
)->raid_inq
.adapter_info
.rebuild_rate
);
2456 mega_free_inquiry(inquiry
, dma_handle
, pdev
);
2458 free_local_pdev(pdev
);
2468 * @page - buffer to write the data in
2469 * @start - where the actual data has been written in page
2470 * @offset - same meaning as the read system call
2471 * @count - same meaning as the read system call
2472 * @eof - set if no more data needs to be returned
2473 * @data - pointer to our soft state
2475 * Display information about the battery module on the controller.
2478 proc_battery(char *page
, char **start
, off_t offset
, int count
, int *eof
,
2481 adapter_t
*adapter
= (adapter_t
*)data
;
2482 dma_addr_t dma_handle
;
2484 struct pci_dev
*pdev
;
2485 u8 battery_status
= 0;
2489 if( make_local_pdev(adapter
, &pdev
) != 0 ) {
2494 if( (inquiry
= mega_allocate_inquiry(&dma_handle
, pdev
)) == NULL
) {
2495 free_local_pdev(pdev
);
2500 if( mega_adapinq(adapter
, dma_handle
) != 0 ) {
2502 len
= sprintf(page
, "Adapter inquiry failed.\n");
2504 printk(KERN_WARNING
"megaraid: inquiry failed.\n");
2506 mega_free_inquiry(inquiry
, dma_handle
, pdev
);
2508 free_local_pdev(pdev
);
2515 if( adapter
->flag
& BOARD_40LD
) {
2516 battery_status
= ((mega_inquiry3
*)inquiry
)->battery_status
;
2519 battery_status
= ((mraid_ext_inquiry
*)inquiry
)->
2520 raid_inq
.adapter_info
.battery_status
;
2524 * Decode the battery status
2526 sprintf(str
, "Battery Status:[%d]", battery_status
);
2528 if(battery_status
== MEGA_BATT_CHARGE_DONE
)
2529 strcat(str
, " Charge Done");
2531 if(battery_status
& MEGA_BATT_MODULE_MISSING
)
2532 strcat(str
, " Module Missing");
2534 if(battery_status
& MEGA_BATT_LOW_VOLTAGE
)
2535 strcat(str
, " Low Voltage");
2537 if(battery_status
& MEGA_BATT_TEMP_HIGH
)
2538 strcat(str
, " Temperature High");
2540 if(battery_status
& MEGA_BATT_PACK_MISSING
)
2541 strcat(str
, " Pack Missing");
2543 if(battery_status
& MEGA_BATT_CHARGE_INPROG
)
2544 strcat(str
, " Charge In-progress");
2546 if(battery_status
& MEGA_BATT_CHARGE_FAIL
)
2547 strcat(str
, " Charge Fail");
2549 if(battery_status
& MEGA_BATT_CYCLES_EXCEEDED
)
2550 strcat(str
, " Cycles Exceeded");
2552 len
= sprintf(page
, "%s\n", str
);
2555 mega_free_inquiry(inquiry
, dma_handle
, pdev
);
2557 free_local_pdev(pdev
);
2567 * @page - buffer to write the data in
2568 * @start - where the actual data has been written in page
2569 * @offset - same meaning as the read system call
2570 * @count - same meaning as the read system call
2571 * @eof - set if no more data needs to be returned
2572 * @data - pointer to our soft state
2574 * Display information about the physical drives on physical channel 0.
2577 proc_pdrv_ch0(char *page
, char **start
, off_t offset
, int count
, int *eof
,
2580 adapter_t
*adapter
= (adapter_t
*)data
;
2584 return (proc_pdrv(adapter
, page
, 0));
2590 * @page - buffer to write the data in
2591 * @start - where the actual data has been written in page
2592 * @offset - same meaning as the read system call
2593 * @count - same meaning as the read system call
2594 * @eof - set if no more data needs to be returned
2595 * @data - pointer to our soft state
2597 * Display information about the physical drives on physical channel 1.
2600 proc_pdrv_ch1(char *page
, char **start
, off_t offset
, int count
, int *eof
,
2603 adapter_t
*adapter
= (adapter_t
*)data
;
2607 return (proc_pdrv(adapter
, page
, 1));
2613 * @page - buffer to write the data in
2614 * @start - where the actual data has been written in page
2615 * @offset - same meaning as the read system call
2616 * @count - same meaning as the read system call
2617 * @eof - set if no more data needs to be returned
2618 * @data - pointer to our soft state
2620 * Display information about the physical drives on physical channel 2.
2623 proc_pdrv_ch2(char *page
, char **start
, off_t offset
, int count
, int *eof
,
2626 adapter_t
*adapter
= (adapter_t
*)data
;
2630 return (proc_pdrv(adapter
, page
, 2));
2636 * @page - buffer to write the data in
2637 * @start - where the actual data has been written in page
2638 * @offset - same meaning as the read system call
2639 * @count - same meaning as the read system call
2640 * @eof - set if no more data needs to be returned
2641 * @data - pointer to our soft state
2643 * Display information about the physical drives on physical channel 3.
2646 proc_pdrv_ch3(char *page
, char **start
, off_t offset
, int count
, int *eof
,
2649 adapter_t
*adapter
= (adapter_t
*)data
;
2653 return (proc_pdrv(adapter
, page
, 3));
2659 * @page - buffer to write the data in
2660 * @adapter - pointer to our soft state
2662 * Display information about the physical drives.
2665 proc_pdrv(adapter_t
*adapter
, char *page
, int channel
)
2667 dma_addr_t dma_handle
;
2669 dma_addr_t scsi_inq_dma_handle
;
2671 struct pci_dev
*pdev
;
2680 if( make_local_pdev(adapter
, &pdev
) != 0 ) {
2684 if( (inquiry
= mega_allocate_inquiry(&dma_handle
, pdev
)) == NULL
) {
2688 if( mega_adapinq(adapter
, dma_handle
) != 0 ) {
2689 len
= sprintf(page
, "Adapter inquiry failed.\n");
2691 printk(KERN_WARNING
"megaraid: inquiry failed.\n");
2697 scsi_inq
= pci_alloc_consistent(pdev
, 256, &scsi_inq_dma_handle
);
2699 if( scsi_inq
== NULL
) {
2700 len
= sprintf(page
, "memory not available for scsi inq.\n");
2705 if( adapter
->flag
& BOARD_40LD
) {
2706 pdrv_state
= ((mega_inquiry3
*)inquiry
)->pdrv_state
;
2709 pdrv_state
= ((mraid_ext_inquiry
*)inquiry
)->
2710 raid_inq
.pdrv_info
.pdrv_state
;
2713 max_channels
= adapter
->product_info
.nchannels
;
2715 if( channel
>= max_channels
) {
2719 for( tgt
= 0; tgt
<= MAX_TARGET
; tgt
++ ) {
2721 i
= channel
*16 + tgt
;
2723 state
= *(pdrv_state
+ i
);
2725 switch( state
& 0x0F ) {
2729 "Channel:%2d Id:%2d State: Online",
2735 "Channel:%2d Id:%2d State: Failed",
2741 "Channel:%2d Id:%2d State: Rebuild",
2747 "Channel:%2d Id:%2d State: Hot spare",
2753 "Channel:%2d Id:%2d State: Un-configured",
2760 * This interface displays inquiries for disk drives
2761 * only. Inquries for logical drives and non-disk
2762 * devices are available through /proc/scsi/scsi
2764 memset(scsi_inq
, 0, 256);
2765 if( mega_internal_dev_inquiry(adapter
, channel
, tgt
,
2766 scsi_inq_dma_handle
) ||
2767 (scsi_inq
[0] & 0x1F) != TYPE_DISK
) {
2772 * Check for overflow. We print less than 240
2773 * characters for inquiry
2775 if( (len
+ 240) >= PAGE_SIZE
) break;
2777 len
+= sprintf(page
+len
, "%s.\n", str
);
2779 len
+= mega_print_inquiry(page
+len
, scsi_inq
);
2783 pci_free_consistent(pdev
, 256, scsi_inq
, scsi_inq_dma_handle
);
2785 mega_free_inquiry(inquiry
, dma_handle
, pdev
);
2787 free_local_pdev(pdev
);
2794 * Display scsi inquiry
2797 mega_print_inquiry(char *page
, char *scsi_inq
)
2802 len
= sprintf(page
, " Vendor: ");
2803 for( i
= 8; i
< 16; i
++ ) {
2804 len
+= sprintf(page
+len
, "%c", scsi_inq
[i
]);
2807 len
+= sprintf(page
+len
, " Model: ");
2809 for( i
= 16; i
< 32; i
++ ) {
2810 len
+= sprintf(page
+len
, "%c", scsi_inq
[i
]);
2813 len
+= sprintf(page
+len
, " Rev: ");
2815 for( i
= 32; i
< 36; i
++ ) {
2816 len
+= sprintf(page
+len
, "%c", scsi_inq
[i
]);
2819 len
+= sprintf(page
+len
, "\n");
2821 i
= scsi_inq
[0] & 0x1f;
2823 len
+= sprintf(page
+len
, " Type: %s ",
2824 i
< MAX_SCSI_DEVICE_CODE
? scsi_device_types
[i
] :
2827 len
+= sprintf(page
+len
,
2828 " ANSI SCSI revision: %02x", scsi_inq
[2] & 0x07);
2830 if( (scsi_inq
[2] & 0x07) == 1 && (scsi_inq
[3] & 0x0f) == 1 )
2831 len
+= sprintf(page
+len
, " CCS\n");
2833 len
+= sprintf(page
+len
, "\n");
2841 * @page - buffer to write the data in
2842 * @start - where the actual data has been written in page
2843 * @offset - same meaning as the read system call
2844 * @count - same meaning as the read system call
2845 * @eof - set if no more data needs to be returned
2846 * @data - pointer to our soft state
2848 * Display real time information about the logical drives 0 through 9.
2851 proc_rdrv_10(char *page
, char **start
, off_t offset
, int count
, int *eof
,
2854 adapter_t
*adapter
= (adapter_t
*)data
;
2858 return (proc_rdrv(adapter
, page
, 0, 9));
2864 * @page - buffer to write the data in
2865 * @start - where the actual data has been written in page
2866 * @offset - same meaning as the read system call
2867 * @count - same meaning as the read system call
2868 * @eof - set if no more data needs to be returned
2869 * @data - pointer to our soft state
2871 * Display real time information about the logical drives 0 through 9.
2874 proc_rdrv_20(char *page
, char **start
, off_t offset
, int count
, int *eof
,
2877 adapter_t
*adapter
= (adapter_t
*)data
;
2881 return (proc_rdrv(adapter
, page
, 10, 19));
2887 * @page - buffer to write the data in
2888 * @start - where the actual data has been written in page
2889 * @offset - same meaning as the read system call
2890 * @count - same meaning as the read system call
2891 * @eof - set if no more data needs to be returned
2892 * @data - pointer to our soft state
2894 * Display real time information about the logical drives 0 through 9.
2897 proc_rdrv_30(char *page
, char **start
, off_t offset
, int count
, int *eof
,
2900 adapter_t
*adapter
= (adapter_t
*)data
;
2904 return (proc_rdrv(adapter
, page
, 20, 29));
2910 * @page - buffer to write the data in
2911 * @start - where the actual data has been written in page
2912 * @offset - same meaning as the read system call
2913 * @count - same meaning as the read system call
2914 * @eof - set if no more data needs to be returned
2915 * @data - pointer to our soft state
2917 * Display real time information about the logical drives 0 through 9.
2920 proc_rdrv_40(char *page
, char **start
, off_t offset
, int count
, int *eof
,
2923 adapter_t
*adapter
= (adapter_t
*)data
;
2927 return (proc_rdrv(adapter
, page
, 30, 39));
2933 * @page - buffer to write the data in
2934 * @adapter - pointer to our soft state
2935 * @start - starting logical drive to display
2936 * @end - ending logical drive to display
2938 * We do not print the inquiry information since its already available through
2939 * /proc/scsi/scsi interface
2942 proc_rdrv(adapter_t
*adapter
, char *page
, int start
, int end
)
2944 dma_addr_t dma_handle
;
2945 logdrv_param
*lparam
;
2948 dma_addr_t disk_array_dma_handle
;
2950 struct pci_dev
*pdev
;
2957 if( make_local_pdev(adapter
, &pdev
) != 0 ) {
2961 if( (inquiry
= mega_allocate_inquiry(&dma_handle
, pdev
)) == NULL
) {
2962 free_local_pdev(pdev
);
2966 if( mega_adapinq(adapter
, dma_handle
) != 0 ) {
2968 len
= sprintf(page
, "Adapter inquiry failed.\n");
2970 printk(KERN_WARNING
"megaraid: inquiry failed.\n");
2972 mega_free_inquiry(inquiry
, dma_handle
, pdev
);
2974 free_local_pdev(pdev
);
2979 memset(&mc
, 0, sizeof(megacmd_t
));
2981 if( adapter
->flag
& BOARD_40LD
) {
2982 array_sz
= sizeof(disk_array_40ld
);
2984 rdrv_state
= ((mega_inquiry3
*)inquiry
)->ldrv_state
;
2986 num_ldrv
= ((mega_inquiry3
*)inquiry
)->num_ldrv
;
2989 array_sz
= sizeof(disk_array_8ld
);
2991 rdrv_state
= ((mraid_ext_inquiry
*)inquiry
)->
2992 raid_inq
.logdrv_info
.ldrv_state
;
2994 num_ldrv
= ((mraid_ext_inquiry
*)inquiry
)->
2995 raid_inq
.logdrv_info
.num_ldrv
;
2998 disk_array
= pci_alloc_consistent(pdev
, array_sz
,
2999 &disk_array_dma_handle
);
3001 if( disk_array
== NULL
) {
3002 len
= sprintf(page
, "memory not available.\n");
3004 mega_free_inquiry(inquiry
, dma_handle
, pdev
);
3006 free_local_pdev(pdev
);
3011 mc
.xferaddr
= (u32
)disk_array_dma_handle
;
3013 if( adapter
->flag
& BOARD_40LD
) {
3014 mc
.cmd
= FC_NEW_CONFIG
;
3015 mc
.opcode
= OP_DCMD_READ_CONFIG
;
3017 if( mega_internal_command(adapter
, &mc
, NULL
) ) {
3019 len
= sprintf(page
, "40LD read config failed.\n");
3021 mega_free_inquiry(inquiry
, dma_handle
, pdev
);
3023 pci_free_consistent(pdev
, array_sz
, disk_array
,
3024 disk_array_dma_handle
);
3026 free_local_pdev(pdev
);
3033 mc
.cmd
= NEW_READ_CONFIG_8LD
;
3035 if( mega_internal_command(adapter
, &mc
, NULL
) ) {
3037 mc
.cmd
= READ_CONFIG_8LD
;
3039 if( mega_internal_command(adapter
, &mc
,
3043 "8LD read config failed.\n");
3045 mega_free_inquiry(inquiry
, dma_handle
, pdev
);
3047 pci_free_consistent(pdev
, array_sz
,
3049 disk_array_dma_handle
);
3051 free_local_pdev(pdev
);
3058 for( i
= start
; i
< ( (end
+1 < num_ldrv
) ? end
+1 : num_ldrv
); i
++ ) {
3060 if( adapter
->flag
& BOARD_40LD
) {
3062 &((disk_array_40ld
*)disk_array
)->ldrv
[i
].lparam
;
3066 &((disk_array_8ld
*)disk_array
)->ldrv
[i
].lparam
;
3070 * Check for overflow. We print less than 240 characters for
3071 * information about each logical drive.
3073 if( (len
+ 240) >= PAGE_SIZE
) break;
3075 len
+= sprintf(page
+len
, "Logical drive:%2d:, ", i
);
3077 switch( rdrv_state
[i
] & 0x0F ) {
3079 len
+= sprintf(page
+len
, "state: offline");
3083 len
+= sprintf(page
+len
, "state: degraded");
3087 len
+= sprintf(page
+len
, "state: optimal");
3091 len
+= sprintf(page
+len
, "state: deleted");
3095 len
+= sprintf(page
+len
, "state: unknown");
3100 * Check if check consistency or initialization is going on
3101 * for this logical drive.
3103 if( (rdrv_state
[i
] & 0xF0) == 0x20 ) {
3104 len
+= sprintf(page
+len
,
3105 ", check-consistency in progress");
3107 else if( (rdrv_state
[i
] & 0xF0) == 0x10 ) {
3108 len
+= sprintf(page
+len
,
3109 ", initialization in progress");
3112 len
+= sprintf(page
+len
, "\n");
3114 len
+= sprintf(page
+len
, "Span depth:%3d, ",
3115 lparam
->span_depth
);
3117 len
+= sprintf(page
+len
, "RAID level:%3d, ",
3120 len
+= sprintf(page
+len
, "Stripe size:%3d, ",
3121 lparam
->stripe_sz
? lparam
->stripe_sz
/2: 128);
3123 len
+= sprintf(page
+len
, "Row size:%3d\n",
3127 len
+= sprintf(page
+len
, "Read Policy: ");
3129 switch(lparam
->read_ahead
) {
3132 len
+= sprintf(page
+len
, "No read ahead, ");
3136 len
+= sprintf(page
+len
, "Read ahead, ");
3139 case ADAP_READ_AHEAD
:
3140 len
+= sprintf(page
+len
, "Adaptive, ");
3145 len
+= sprintf(page
+len
, "Write Policy: ");
3147 switch(lparam
->write_mode
) {
3149 case WRMODE_WRITE_THRU
:
3150 len
+= sprintf(page
+len
, "Write thru, ");
3153 case WRMODE_WRITE_BACK
:
3154 len
+= sprintf(page
+len
, "Write back, ");
3158 len
+= sprintf(page
+len
, "Cache Policy: ");
3160 switch(lparam
->direct_io
) {
3163 len
+= sprintf(page
+len
, "Cached IO\n\n");
3167 len
+= sprintf(page
+len
, "Direct IO\n\n");
3172 mega_free_inquiry(inquiry
, dma_handle
, pdev
);
3174 pci_free_consistent(pdev
, array_sz
, disk_array
,
3175 disk_array_dma_handle
);
3177 free_local_pdev(pdev
);
3186 * megaraid_biosparam()
3188 * Return the disk geometry for a particular disk
3191 megaraid_biosparam(struct scsi_device
*sdev
, struct block_device
*bdev
,
3192 sector_t capacity
, int geom
[])
3201 /* Get pointer to host config structure */
3202 adapter
= (adapter_t
*)sdev
->host
->hostdata
;
3204 if (IS_RAID_CH(adapter
, sdev
->channel
)) {
3205 /* Default heads (64) & sectors (32) */
3208 cylinders
= (ulong
)capacity
/ (heads
* sectors
);
3211 * Handle extended translation size for logical drives
3214 if ((ulong
)capacity
>= 0x200000) {
3217 cylinders
= (ulong
)capacity
/ (heads
* sectors
);
3223 geom
[2] = cylinders
;
3226 bh
= scsi_bios_ptable(bdev
);
3229 rval
= scsi_partsize(bh
, capacity
,
3230 &geom
[2], &geom
[0], &geom
[1]);
3237 "megaraid: invalid partition on this disk on channel %d\n",
3240 /* Default heads (64) & sectors (32) */
3243 cylinders
= (ulong
)capacity
/ (heads
* sectors
);
3245 /* Handle extended translation size for logical drives > 1Gb */
3246 if ((ulong
)capacity
>= 0x200000) {
3249 cylinders
= (ulong
)capacity
/ (heads
* sectors
);
3255 geom
[2] = cylinders
;
3263 * @adapter - pointer to our soft state
3265 * Allocate memory for the various pointers in the scb structures:
3266 * scatter-gather list pointer, passthru and extended passthru structure
3270 mega_init_scb(adapter_t
*adapter
)
3275 for( i
= 0; i
< adapter
->max_cmds
; i
++ ) {
3277 scb
= &adapter
->scb_list
[i
];
3285 for( i
= 0; i
< adapter
->max_cmds
; i
++ ) {
3287 scb
= &adapter
->scb_list
[i
];
3291 scb
->sgl64
= pci_alloc_consistent(adapter
->dev
,
3292 sizeof(mega_sgl64
) * adapter
->sglen
,
3293 &scb
->sgl_dma_addr
);
3295 scb
->sgl
= (mega_sglist
*)scb
->sgl64
;
3298 printk(KERN_WARNING
"RAID: Can't allocate sglist.\n");
3299 mega_free_sgl(adapter
);
3303 scb
->pthru
= pci_alloc_consistent(adapter
->dev
,
3304 sizeof(mega_passthru
),
3305 &scb
->pthru_dma_addr
);
3308 printk(KERN_WARNING
"RAID: Can't allocate passthru.\n");
3309 mega_free_sgl(adapter
);
3313 scb
->epthru
= pci_alloc_consistent(adapter
->dev
,
3314 sizeof(mega_ext_passthru
),
3315 &scb
->epthru_dma_addr
);
3317 if( !scb
->epthru
) {
3319 "Can't allocate extended passthru.\n");
3320 mega_free_sgl(adapter
);
3325 scb
->dma_type
= MEGA_DMA_TYPE_NONE
;
3329 * lock not required since we are loading the driver, so no
3330 * commands possible right now.
3332 scb
->state
= SCB_FREE
;
3334 list_add(&scb
->list
, &adapter
->free_list
);
3346 * Routines for the character/ioctl interface to the driver. Find out if this
3347 * is a valid open. If yes, increment the module use count so that it cannot
3351 megadev_open (struct inode
*inode
, struct file
*filep
)
3354 * Only allow superuser to access private ioctl interface
3356 if( !capable(CAP_SYS_ADMIN
) ) return -EACCES
;
3364 * @inode - Our device inode
3366 * @cmd - ioctl command
3367 * @arg - user buffer
3369 * ioctl entry point for our private ioctl interface. We move the data in from
3370 * the user space, prepare the command (if necessary, convert the old MIMD
3371 * ioctl to new ioctl command), and issue a synchronous command to the
3375 megadev_ioctl(struct inode
*inode
, struct file
*filep
, unsigned int cmd
,
3382 mega_passthru __user
*upthru
; /* user address for passthru */
3383 mega_passthru
*pthru
; /* copy user passthru here */
3384 dma_addr_t pthru_dma_hndl
;
3385 void *data
= NULL
; /* data to be transferred */
3386 dma_addr_t data_dma_hndl
; /* dma handle for data xfer area */
3388 megastat_t __user
*ustats
;
3391 struct pci_dev
*pdev
;
3393 ustats
= NULL
; /* avoid compilation warnings */
3397 * Make sure only USCSICMD are issued through this interface.
3398 * MIMD application would still fire different command.
3400 if( (_IOC_TYPE(cmd
) != MEGAIOC_MAGIC
) && (cmd
!= USCSICMD
) ) {
3405 * Check and convert a possible MIMD command to NIT command.
3406 * mega_m_to_n() copies the data from the user space, so we do not
3407 * have to do it here.
3408 * NOTE: We will need some user address to copyout the data, therefore
3409 * the inteface layer will also provide us with the required user
3412 memset(&uioc
, 0, sizeof(nitioctl_t
));
3413 if( (rval
= mega_m_to_n( (void __user
*)arg
, &uioc
)) != 0 )
3417 switch( uioc
.opcode
) {
3419 case GET_DRIVER_VER
:
3420 if( put_user(driver_ver
, (u32 __user
*)uioc
.uioc_uaddr
) )
3426 if( put_user(hba_count
, (u32 __user
*)uioc
.uioc_uaddr
) )
3430 * Shucks. MIMD interface returns a positive value for number
3431 * of adapters. TODO: Change it to return 0 when there is no
3432 * applicatio using mimd interface.
3441 if( (adapno
= GETADAP(uioc
.adapno
)) >= hba_count
)
3444 if( copy_to_user(uioc
.uioc_uaddr
, mcontroller
+adapno
,
3445 sizeof(struct mcontroller
)) )
3455 if( (adapno
= GETADAP(uioc
.adapno
)) >= hba_count
)
3458 adapter
= hba_soft_state
[adapno
];
3460 ustats
= uioc
.uioc_uaddr
;
3462 if( copy_from_user(&num_ldrv
, &ustats
->num_ldrv
, sizeof(int)) )
3466 * Check for the validity of the logical drive number
3468 if( num_ldrv
>= MAX_LOGICAL_DRIVES_40LD
) return -EINVAL
;
3470 if( copy_to_user(ustats
->nreads
, adapter
->nreads
,
3471 num_ldrv
*sizeof(u32
)) )
3474 if( copy_to_user(ustats
->nreadblocks
, adapter
->nreadblocks
,
3475 num_ldrv
*sizeof(u32
)) )
3478 if( copy_to_user(ustats
->nwrites
, adapter
->nwrites
,
3479 num_ldrv
*sizeof(u32
)) )
3482 if( copy_to_user(ustats
->nwriteblocks
, adapter
->nwriteblocks
,
3483 num_ldrv
*sizeof(u32
)) )
3486 if( copy_to_user(ustats
->rd_errors
, adapter
->rd_errors
,
3487 num_ldrv
*sizeof(u32
)) )
3490 if( copy_to_user(ustats
->wr_errors
, adapter
->wr_errors
,
3491 num_ldrv
*sizeof(u32
)) )
3502 if( (adapno
= GETADAP(uioc
.adapno
)) >= hba_count
)
3505 adapter
= hba_soft_state
[adapno
];
3508 * Deletion of logical drive is a special case. The adapter
3509 * should be quiescent before this command is issued.
3511 if( uioc
.uioc_rmbox
[0] == FC_DEL_LOGDRV
&&
3512 uioc
.uioc_rmbox
[2] == OP_DEL_LOGDRV
) {
3515 * Do we support this feature
3517 if( !adapter
->support_random_del
) {
3518 printk(KERN_WARNING
"megaraid: logdrv ");
3519 printk("delete on non-supporting F/W.\n");
3524 rval
= mega_del_logdrv( adapter
, uioc
.uioc_rmbox
[3] );
3527 memset(&mc
, 0, sizeof(megacmd_t
));
3531 rval
= mega_n_to_m((void __user
*)arg
, &mc
);
3537 * This interface only support the regular passthru commands.
3538 * Reject extended passthru and 64-bit passthru
3540 if( uioc
.uioc_rmbox
[0] == MEGA_MBOXCMD_PASSTHRU64
||
3541 uioc
.uioc_rmbox
[0] == MEGA_MBOXCMD_EXTPTHRU
) {
3543 printk(KERN_WARNING
"megaraid: rejected passthru.\n");
3549 * For all internal commands, the buffer must be allocated in
3550 * <4GB address range
3552 if( make_local_pdev(adapter
, &pdev
) != 0 )
3555 /* Is it a passthru command or a DCMD */
3556 if( uioc
.uioc_rmbox
[0] == MEGA_MBOXCMD_PASSTHRU
) {
3557 /* Passthru commands */
3559 pthru
= pci_alloc_consistent(pdev
,
3560 sizeof(mega_passthru
),
3563 if( pthru
== NULL
) {
3564 free_local_pdev(pdev
);
3569 * The user passthru structure
3571 upthru
= (mega_passthru __user
*)MBOX(uioc
)->xferaddr
;
3574 * Copy in the user passthru here.
3576 if( copy_from_user(pthru
, upthru
,
3577 sizeof(mega_passthru
)) ) {
3579 pci_free_consistent(pdev
,
3580 sizeof(mega_passthru
), pthru
,
3583 free_local_pdev(pdev
);
3589 * Is there a data transfer
3591 if( pthru
->dataxferlen
) {
3592 data
= pci_alloc_consistent(pdev
,
3596 if( data
== NULL
) {
3597 pci_free_consistent(pdev
,
3598 sizeof(mega_passthru
),
3602 free_local_pdev(pdev
);
3608 * Save the user address and point the kernel
3609 * address at just allocated memory
3611 uxferaddr
= pthru
->dataxferaddr
;
3612 pthru
->dataxferaddr
= data_dma_hndl
;
3617 * Is data coming down-stream
3619 if( pthru
->dataxferlen
&& (uioc
.flags
& UIOC_WR
) ) {
3623 if( copy_from_user(data
, (char __user
*)uxferaddr
,
3624 pthru
->dataxferlen
) ) {
3626 goto freemem_and_return
;
3630 memset(&mc
, 0, sizeof(megacmd_t
));
3632 mc
.cmd
= MEGA_MBOXCMD_PASSTHRU
;
3633 mc
.xferaddr
= (u32
)pthru_dma_hndl
;
3638 mega_internal_command(adapter
, &mc
, pthru
);
3640 rval
= mega_n_to_m((void __user
*)arg
, &mc
);
3642 if( rval
) goto freemem_and_return
;
3646 * Is data going up-stream
3648 if( pthru
->dataxferlen
&& (uioc
.flags
& UIOC_RD
) ) {
3649 if( copy_to_user((char __user
*)uxferaddr
, data
,
3650 pthru
->dataxferlen
) ) {
3656 * Send the request sense data also, irrespective of
3657 * whether the user has asked for it or not.
3659 copy_to_user(upthru
->reqsensearea
,
3660 pthru
->reqsensearea
, 14);
3663 if( pthru
->dataxferlen
) {
3664 pci_free_consistent(pdev
,
3665 pthru
->dataxferlen
, data
,
3669 pci_free_consistent(pdev
, sizeof(mega_passthru
),
3670 pthru
, pthru_dma_hndl
);
3672 free_local_pdev(pdev
);
3680 * Is there a data transfer
3682 if( uioc
.xferlen
) {
3683 data
= pci_alloc_consistent(pdev
,
3684 uioc
.xferlen
, &data_dma_hndl
);
3686 if( data
== NULL
) {
3687 free_local_pdev(pdev
);
3691 uxferaddr
= MBOX(uioc
)->xferaddr
;
3695 * Is data coming down-stream
3697 if( uioc
.xferlen
&& (uioc
.flags
& UIOC_WR
) ) {
3701 if( copy_from_user(data
, (char __user
*)uxferaddr
,
3704 pci_free_consistent(pdev
,
3706 data
, data_dma_hndl
);
3708 free_local_pdev(pdev
);
3714 memcpy(&mc
, MBOX(uioc
), sizeof(megacmd_t
));
3716 mc
.xferaddr
= (u32
)data_dma_hndl
;
3721 mega_internal_command(adapter
, &mc
, NULL
);
3723 rval
= mega_n_to_m((void __user
*)arg
, &mc
);
3726 if( uioc
.xferlen
) {
3727 pci_free_consistent(pdev
,
3732 free_local_pdev(pdev
);
3738 * Is data going up-stream
3740 if( uioc
.xferlen
&& (uioc
.flags
& UIOC_RD
) ) {
3741 if( copy_to_user((char __user
*)uxferaddr
, data
,
3748 if( uioc
.xferlen
) {
3749 pci_free_consistent(pdev
,
3754 free_local_pdev(pdev
);
3768 * @arg - user address
3769 * @uioc - new ioctl structure
3771 * A thin layer to convert older mimd interface ioctl structure to NIT ioctl
3774 * Converts the older mimd ioctl structure to newer NIT structure
3777 mega_m_to_n(void __user
*arg
, nitioctl_t
*uioc
)
3779 struct uioctl_t uioc_mimd
;
3780 char signature
[8] = {0};
3786 * check is the application conforms to NIT. We do not have to do much
3788 * We exploit the fact that the signature is stored in the very
3789 * begining of the structure.
3792 if( copy_from_user(signature
, arg
, 7) )
3795 if( memcmp(signature
, "MEGANIT", 7) == 0 ) {
3798 * NOTE NOTE: The nit ioctl is still under flux because of
3799 * change of mailbox definition, in HPE. No applications yet
3800 * use this interface and let's not have applications use this
3801 * interface till the new specifitions are in place.
3805 if( copy_from_user(uioc
, arg
, sizeof(nitioctl_t
)) )
3812 * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t
3814 * Get the user ioctl structure
3816 if( copy_from_user(&uioc_mimd
, arg
, sizeof(struct uioctl_t
)) )
3821 * Get the opcode and subopcode for the commands
3823 opcode
= uioc_mimd
.ui
.fcs
.opcode
;
3824 subopcode
= uioc_mimd
.ui
.fcs
.subopcode
;
3829 switch (subopcode
) {
3831 case MEGAIOC_QDRVRVER
: /* Query driver version */
3832 uioc
->opcode
= GET_DRIVER_VER
;
3833 uioc
->uioc_uaddr
= uioc_mimd
.data
;
3836 case MEGAIOC_QNADAP
: /* Get # of adapters */
3837 uioc
->opcode
= GET_N_ADAP
;
3838 uioc
->uioc_uaddr
= uioc_mimd
.data
;
3841 case MEGAIOC_QADAPINFO
: /* Get adapter information */
3842 uioc
->opcode
= GET_ADAP_INFO
;
3843 uioc
->adapno
= uioc_mimd
.ui
.fcs
.adapno
;
3844 uioc
->uioc_uaddr
= uioc_mimd
.data
;
3856 uioc
->opcode
= MBOX_CMD
;
3857 uioc
->adapno
= uioc_mimd
.ui
.fcs
.adapno
;
3859 memcpy(uioc
->uioc_rmbox
, uioc_mimd
.mbox
, 18);
3861 uioc
->xferlen
= uioc_mimd
.ui
.fcs
.length
;
3863 if( uioc_mimd
.outlen
) uioc
->flags
= UIOC_RD
;
3864 if( uioc_mimd
.inlen
) uioc
->flags
|= UIOC_WR
;
3870 uioc
->opcode
= MBOX_CMD
;
3871 uioc
->adapno
= uioc_mimd
.ui
.fcs
.adapno
;
3873 memcpy(uioc
->uioc_rmbox
, uioc_mimd
.mbox
, 18);
3876 * Choose the xferlen bigger of input and output data
3878 uioc
->xferlen
= uioc_mimd
.outlen
> uioc_mimd
.inlen
?
3879 uioc_mimd
.outlen
: uioc_mimd
.inlen
;
3881 if( uioc_mimd
.outlen
) uioc
->flags
= UIOC_RD
;
3882 if( uioc_mimd
.inlen
) uioc
->flags
|= UIOC_WR
;
3896 * @arg - user address
3897 * @mc - mailbox command
3899 * Updates the status information to the application, depending on application
3900 * conforms to older mimd ioctl interface or newer NIT ioctl interface
3903 mega_n_to_m(void __user
*arg
, megacmd_t
*mc
)
3905 nitioctl_t __user
*uiocp
;
3906 megacmd_t __user
*umc
;
3907 mega_passthru __user
*upthru
;
3908 struct uioctl_t __user
*uioc_mimd
;
3909 char signature
[8] = {0};
3912 * check is the application conforms to NIT.
3914 if( copy_from_user(signature
, arg
, 7) )
3917 if( memcmp(signature
, "MEGANIT", 7) == 0 ) {
3921 if( put_user(mc
->status
, (u8 __user
*)&MBOX_P(uiocp
)->status
) )
3924 if( mc
->cmd
== MEGA_MBOXCMD_PASSTHRU
) {
3926 umc
= MBOX_P(uiocp
);
3928 if (get_user(upthru
, (mega_passthru __user
* __user
*)&umc
->xferaddr
))
3931 if( put_user(mc
->status
, (u8 __user
*)&upthru
->scsistatus
))
3938 if( put_user(mc
->status
, (u8 __user
*)&uioc_mimd
->mbox
[17]) )
3941 if( mc
->cmd
== MEGA_MBOXCMD_PASSTHRU
) {
3943 umc
= (megacmd_t __user
*)uioc_mimd
->mbox
;
3945 if (get_user(upthru
, (mega_passthru __user
* __user
*)&umc
->xferaddr
))
3948 if( put_user(mc
->status
, (u8 __user
*)&upthru
->scsistatus
) )
3958 * MEGARAID 'FW' commands.
3962 * mega_is_bios_enabled()
3963 * @adapter - pointer to our soft state
3965 * issue command to find out if the BIOS is enabled for this controller
3968 mega_is_bios_enabled(adapter_t
*adapter
)
3970 unsigned char raw_mbox
[sizeof(struct mbox_out
)];
3974 mbox
= (mbox_t
*)raw_mbox
;
3976 memset(&mbox
->m_out
, 0, sizeof(raw_mbox
));
3978 memset((void *)adapter
->mega_buffer
, 0, MEGA_BUFFER_SIZE
);
3980 mbox
->m_out
.xferaddr
= (u32
)adapter
->buf_dma_handle
;
3982 raw_mbox
[0] = IS_BIOS_ENABLED
;
3983 raw_mbox
[2] = GET_BIOS
;
3986 ret
= issue_scb_block(adapter
, raw_mbox
);
3988 return *(char *)adapter
->mega_buffer
;
3993 * mega_enum_raid_scsi()
3994 * @adapter - pointer to our soft state
3996 * Find out what channels are RAID/SCSI. This information is used to
3997 * differentiate the virtual channels and physical channels and to support
3998 * ROMB feature and non-disk devices.
4001 mega_enum_raid_scsi(adapter_t
*adapter
)
4003 unsigned char raw_mbox
[sizeof(struct mbox_out
)];
4007 mbox
= (mbox_t
*)raw_mbox
;
4009 memset(&mbox
->m_out
, 0, sizeof(raw_mbox
));
4012 * issue command to find out what channels are raid/scsi
4014 raw_mbox
[0] = CHNL_CLASS
;
4015 raw_mbox
[2] = GET_CHNL_CLASS
;
4017 memset((void *)adapter
->mega_buffer
, 0, MEGA_BUFFER_SIZE
);
4019 mbox
->m_out
.xferaddr
= (u32
)adapter
->buf_dma_handle
;
4022 * Non-ROMB firmware fail this command, so all channels
4023 * must be shown RAID
4025 adapter
->mega_ch_class
= 0xFF;
4027 if(!issue_scb_block(adapter
, raw_mbox
)) {
4028 adapter
->mega_ch_class
= *((char *)adapter
->mega_buffer
);
4032 for( i
= 0; i
< adapter
->product_info
.nchannels
; i
++ ) {
4033 if( (adapter
->mega_ch_class
>> i
) & 0x01 ) {
4034 printk(KERN_INFO
"megaraid: channel[%d] is raid.\n",
4038 printk(KERN_INFO
"megaraid: channel[%d] is scsi.\n",
4048 * mega_get_boot_drv()
4049 * @adapter - pointer to our soft state
4051 * Find out which device is the boot device. Note, any logical drive or any
4052 * phyical device (e.g., a CDROM) can be designated as a boot device.
4055 mega_get_boot_drv(adapter_t
*adapter
)
4057 struct private_bios_data
*prv_bios_data
;
4058 unsigned char raw_mbox
[sizeof(struct mbox_out
)];
4065 mbox
= (mbox_t
*)raw_mbox
;
4067 memset(&mbox
->m_out
, 0, sizeof(raw_mbox
));
4069 raw_mbox
[0] = BIOS_PVT_DATA
;
4070 raw_mbox
[2] = GET_BIOS_PVT_DATA
;
4072 memset((void *)adapter
->mega_buffer
, 0, MEGA_BUFFER_SIZE
);
4074 mbox
->m_out
.xferaddr
= (u32
)adapter
->buf_dma_handle
;
4076 adapter
->boot_ldrv_enabled
= 0;
4077 adapter
->boot_ldrv
= 0;
4079 adapter
->boot_pdrv_enabled
= 0;
4080 adapter
->boot_pdrv_ch
= 0;
4081 adapter
->boot_pdrv_tgt
= 0;
4083 if(issue_scb_block(adapter
, raw_mbox
) == 0) {
4085 (struct private_bios_data
*)adapter
->mega_buffer
;
4088 cksum_p
= (char *)prv_bios_data
;
4089 for (i
= 0; i
< 14; i
++ ) {
4090 cksum
+= (u16
)(*cksum_p
++);
4093 if (prv_bios_data
->cksum
== (u16
)(0-cksum
) ) {
4096 * If MSB is set, a physical drive is set as boot
4099 if( prv_bios_data
->boot_drv
& 0x80 ) {
4100 adapter
->boot_pdrv_enabled
= 1;
4101 boot_pdrv
= prv_bios_data
->boot_drv
& 0x7F;
4102 adapter
->boot_pdrv_ch
= boot_pdrv
/ 16;
4103 adapter
->boot_pdrv_tgt
= boot_pdrv
% 16;
4106 adapter
->boot_ldrv_enabled
= 1;
4107 adapter
->boot_ldrv
= prv_bios_data
->boot_drv
;
4115 * mega_support_random_del()
4116 * @adapter - pointer to our soft state
4118 * Find out if this controller supports random deletion and addition of
4122 mega_support_random_del(adapter_t
*adapter
)
4124 unsigned char raw_mbox
[sizeof(struct mbox_out
)];
4128 mbox
= (mbox_t
*)raw_mbox
;
4130 memset(&mbox
->m_out
, 0, sizeof(raw_mbox
));
4135 raw_mbox
[0] = FC_DEL_LOGDRV
;
4136 raw_mbox
[2] = OP_SUP_DEL_LOGDRV
;
4138 rval
= issue_scb_block(adapter
, raw_mbox
);
4145 * mega_support_ext_cdb()
4146 * @adapter - pointer to our soft state
4148 * Find out if this firmware support cdblen > 10
4151 mega_support_ext_cdb(adapter_t
*adapter
)
4153 unsigned char raw_mbox
[sizeof(struct mbox_out
)];
4157 mbox
= (mbox_t
*)raw_mbox
;
4159 memset(&mbox
->m_out
, 0, sizeof(raw_mbox
));
4161 * issue command to find out if controller supports extended CDBs.
4166 rval
= issue_scb_block(adapter
, raw_mbox
);
4174 * @adapter - pointer to our soft state
4175 * @logdrv - logical drive to be deleted
4177 * Delete the specified logical drive. It is the responsibility of the user
4178 * app to let the OS know about this operation.
4181 mega_del_logdrv(adapter_t
*adapter
, int logdrv
)
4183 unsigned long flags
;
4188 * Stop sending commands to the controller, queue them internally.
4189 * When deletion is complete, ISR will flush the queue.
4191 atomic_set(&adapter
->quiescent
, 1);
4194 * Wait till all the issued commands are complete and there are no
4195 * commands in the pending queue
4197 while (atomic_read(&adapter
->pend_cmds
) > 0 ||
4198 !list_empty(&adapter
->pending_list
))
4199 msleep(1000); /* sleep for 1s */
4201 rval
= mega_do_del_logdrv(adapter
, logdrv
);
4203 spin_lock_irqsave(&adapter
->lock
, flags
);
4206 * If delete operation was successful, add 0x80 to the logical drive
4207 * ids for commands in the pending queue.
4209 if (adapter
->read_ldidmap
) {
4210 struct list_head
*pos
;
4211 list_for_each(pos
, &adapter
->pending_list
) {
4212 scb
= list_entry(pos
, scb_t
, list
);
4213 if (scb
->pthru
->logdrv
< 0x80 )
4214 scb
->pthru
->logdrv
+= 0x80;
4218 atomic_set(&adapter
->quiescent
, 0);
4220 mega_runpendq(adapter
);
4222 spin_unlock_irqrestore(&adapter
->lock
, flags
);
4229 mega_do_del_logdrv(adapter_t
*adapter
, int logdrv
)
4234 memset( &mc
, 0, sizeof(megacmd_t
));
4236 mc
.cmd
= FC_DEL_LOGDRV
;
4237 mc
.opcode
= OP_DEL_LOGDRV
;
4238 mc
.subopcode
= logdrv
;
4240 rval
= mega_internal_command(adapter
, &mc
, NULL
);
4242 /* log this event */
4244 printk(KERN_WARNING
"megaraid: Delete LD-%d failed.", logdrv
);
4249 * After deleting first logical drive, the logical drives must be
4250 * addressed by adding 0x80 to the logical drive id.
4252 adapter
->read_ldidmap
= 1;
4259 * mega_get_max_sgl()
4260 * @adapter - pointer to our soft state
4262 * Find out the maximum number of scatter-gather elements supported by this
4263 * version of the firmware
4266 mega_get_max_sgl(adapter_t
*adapter
)
4268 unsigned char raw_mbox
[sizeof(struct mbox_out
)];
4271 mbox
= (mbox_t
*)raw_mbox
;
4273 memset(mbox
, 0, sizeof(raw_mbox
));
4275 memset((void *)adapter
->mega_buffer
, 0, MEGA_BUFFER_SIZE
);
4277 mbox
->m_out
.xferaddr
= (u32
)adapter
->buf_dma_handle
;
4279 raw_mbox
[0] = MAIN_MISC_OPCODE
;
4280 raw_mbox
[2] = GET_MAX_SG_SUPPORT
;
4283 if( issue_scb_block(adapter
, raw_mbox
) ) {
4285 * f/w does not support this command. Choose the default value
4287 adapter
->sglen
= MIN_SGLIST
;
4290 adapter
->sglen
= *((char *)adapter
->mega_buffer
);
4293 * Make sure this is not more than the resources we are
4294 * planning to allocate
4296 if ( adapter
->sglen
> MAX_SGLIST
)
4297 adapter
->sglen
= MAX_SGLIST
;
4305 * mega_support_cluster()
4306 * @adapter - pointer to our soft state
4308 * Find out if this firmware support cluster calls.
4311 mega_support_cluster(adapter_t
*adapter
)
4313 unsigned char raw_mbox
[sizeof(struct mbox_out
)];
4316 mbox
= (mbox_t
*)raw_mbox
;
4318 memset(mbox
, 0, sizeof(raw_mbox
));
4320 memset((void *)adapter
->mega_buffer
, 0, MEGA_BUFFER_SIZE
);
4322 mbox
->m_out
.xferaddr
= (u32
)adapter
->buf_dma_handle
;
4325 * Try to get the initiator id. This command will succeed iff the
4326 * clustering is available on this HBA.
4328 raw_mbox
[0] = MEGA_GET_TARGET_ID
;
4330 if( issue_scb_block(adapter
, raw_mbox
) == 0 ) {
4333 * Cluster support available. Get the initiator target id.
4334 * Tell our id to mid-layer too.
4336 adapter
->this_id
= *(u32
*)adapter
->mega_buffer
;
4337 adapter
->host
->this_id
= adapter
->this_id
;
4348 * @adapter - pointer to our soft state
4349 * @dma_handle - DMA address of the buffer
4351 * Issue internal comamnds while interrupts are available.
4352 * We only issue direct mailbox commands from within the driver. ioctl()
4353 * interface using these routines can issue passthru commands.
4356 mega_adapinq(adapter_t
*adapter
, dma_addr_t dma_handle
)
4360 memset(&mc
, 0, sizeof(megacmd_t
));
4362 if( adapter
->flag
& BOARD_40LD
) {
4363 mc
.cmd
= FC_NEW_CONFIG
;
4364 mc
.opcode
= NC_SUBOP_ENQUIRY3
;
4365 mc
.subopcode
= ENQ3_GET_SOLICITED_FULL
;
4368 mc
.cmd
= MEGA_MBOXCMD_ADPEXTINQ
;
4371 mc
.xferaddr
= (u32
)dma_handle
;
4373 if ( mega_internal_command(adapter
, &mc
, NULL
) != 0 ) {
4381 /** mega_internal_dev_inquiry()
4382 * @adapter - pointer to our soft state
4383 * @ch - channel for this device
4384 * @tgt - ID of this device
4385 * @buf_dma_handle - DMA address of the buffer
4387 * Issue the scsi inquiry for the specified device.
4390 mega_internal_dev_inquiry(adapter_t
*adapter
, u8 ch
, u8 tgt
,
4391 dma_addr_t buf_dma_handle
)
4393 mega_passthru
*pthru
;
4394 dma_addr_t pthru_dma_handle
;
4397 struct pci_dev
*pdev
;
4401 * For all internal commands, the buffer must be allocated in <4GB
4404 if( make_local_pdev(adapter
, &pdev
) != 0 ) return -1;
4406 pthru
= pci_alloc_consistent(pdev
, sizeof(mega_passthru
),
4409 if( pthru
== NULL
) {
4410 free_local_pdev(pdev
);
4416 pthru
->reqsenselen
= 14;
4417 pthru
->islogical
= 0;
4419 pthru
->channel
= (adapter
->flag
& BOARD_40LD
) ? 0 : ch
;
4421 pthru
->target
= (adapter
->flag
& BOARD_40LD
) ? (ch
<< 4)|tgt
: tgt
;
4425 pthru
->cdb
[0] = INQUIRY
;
4429 pthru
->cdb
[4] = 255;
4433 pthru
->dataxferaddr
= (u32
)buf_dma_handle
;
4434 pthru
->dataxferlen
= 256;
4436 memset(&mc
, 0, sizeof(megacmd_t
));
4438 mc
.cmd
= MEGA_MBOXCMD_PASSTHRU
;
4439 mc
.xferaddr
= (u32
)pthru_dma_handle
;
4441 rval
= mega_internal_command(adapter
, &mc
, pthru
);
4443 pci_free_consistent(pdev
, sizeof(mega_passthru
), pthru
,
4446 free_local_pdev(pdev
);
4453 * mega_internal_command()
4454 * @adapter - pointer to our soft state
4455 * @mc - the mailbox command
4456 * @pthru - Passthru structure for DCDB commands
4458 * Issue the internal commands in interrupt mode.
4459 * The last argument is the address of the passthru structure if the command
4460 * to be fired is a passthru command
4462 * lockscope specifies whether the caller has already acquired the lock. Of
4463 * course, the caller must know which lock we are talking about.
4465 * Note: parameter 'pthru' is null for non-passthru commands.
4468 mega_internal_command(adapter_t
*adapter
, megacmd_t
*mc
, mega_passthru
*pthru
)
4471 struct scsi_device
*sdev
;
4472 unsigned long flags
= 0;
4477 * The internal commands share one command id and hence are
4478 * serialized. This is so because we want to reserve maximum number of
4479 * available command ids for the I/O commands.
4481 down(&adapter
->int_mtx
);
4483 scb
= &adapter
->int_scb
;
4484 memset(scb
, 0, sizeof(scb_t
));
4486 scmd
= &adapter
->int_scmd
;
4487 memset(scmd
, 0, sizeof(Scsi_Cmnd
));
4489 sdev
= kmalloc(sizeof(struct scsi_device
), GFP_KERNEL
);
4490 memset(sdev
, 0, sizeof(struct scsi_device
));
4491 scmd
->device
= sdev
;
4493 scmd
->device
->host
= adapter
->host
;
4494 scmd
->buffer
= (void *)scb
;
4495 scmd
->cmnd
[0] = MEGA_INTERNAL_CMD
;
4497 scb
->state
|= SCB_ACTIVE
;
4500 memcpy(scb
->raw_mbox
, mc
, sizeof(megacmd_t
));
4503 * Is it a passthru command
4505 if( mc
->cmd
== MEGA_MBOXCMD_PASSTHRU
) {
4510 scb
->idx
= CMDID_INT_CMDS
;
4512 megaraid_queue(scmd
, mega_internal_done
);
4514 wait_for_completion(&adapter
->int_waitq
);
4516 rval
= scmd
->result
;
4517 mc
->status
= scmd
->result
;
4521 * Print a debug message for all failed commands. Applications can use
4524 if( scmd
->result
&& trace_level
) {
4525 printk("megaraid: cmd [%x, %x, %x] status:[%x]\n",
4526 mc
->cmd
, mc
->opcode
, mc
->subopcode
, scmd
->result
);
4529 up(&adapter
->int_mtx
);
4536 * mega_internal_done()
4537 * @scmd - internal scsi command
4539 * Callback routine for internal commands.
4542 mega_internal_done(Scsi_Cmnd
*scmd
)
4546 adapter
= (adapter_t
*)scmd
->device
->host
->hostdata
;
4548 complete(&adapter
->int_waitq
);
4553 static struct scsi_host_template megaraid_template
= {
4554 .module
= THIS_MODULE
,
4556 .proc_name
= "megaraid",
4557 .info
= megaraid_info
,
4558 .queuecommand
= megaraid_queue
,
4559 .bios_param
= megaraid_biosparam
,
4560 .max_sectors
= MAX_SECTORS_PER_IO
,
4561 .can_queue
= MAX_COMMANDS
,
4562 .this_id
= DEFAULT_INITIATOR_ID
,
4563 .sg_tablesize
= MAX_SGLIST
,
4564 .cmd_per_lun
= DEF_CMD_PER_LUN
,
4565 .use_clustering
= ENABLE_CLUSTERING
,
4566 .eh_abort_handler
= megaraid_abort
,
4567 .eh_device_reset_handler
= megaraid_reset
,
4568 .eh_bus_reset_handler
= megaraid_reset
,
4569 .eh_host_reset_handler
= megaraid_reset
,
4572 static int __devinit
4573 megaraid_probe_one(struct pci_dev
*pdev
, const struct pci_device_id
*id
)
4575 struct Scsi_Host
*host
;
4577 unsigned long mega_baseport
, tbase
, flag
= 0;
4578 u16 subsysid
, subsysvid
;
4579 u8 pci_bus
, pci_dev_func
;
4581 int error
= -ENODEV
;
4583 if (pci_enable_device(pdev
))
4585 pci_set_master(pdev
);
4587 pci_bus
= pdev
->bus
->number
;
4588 pci_dev_func
= pdev
->devfn
;
4591 * The megaraid3 stuff reports the ID of the Intel part which is not
4592 * remotely specific to the megaraid
4594 if (pdev
->vendor
== PCI_VENDOR_ID_INTEL
) {
4597 * Don't fall over the Compaq management cards using the same
4600 if (pdev
->subsystem_vendor
== PCI_VENDOR_ID_COMPAQ
&&
4601 pdev
->subsystem_device
== 0xC000)
4603 /* Now check the magic signature byte */
4604 pci_read_config_word(pdev
, PCI_CONF_AMISIG
, &magic
);
4605 if (magic
!= HBA_SIGNATURE_471
&& magic
!= HBA_SIGNATURE
)
4607 /* Ok it is probably a megaraid */
4611 * For these vendor and device ids, signature offsets are not
4612 * valid and 64 bit is implicit
4614 if (id
->driver_data
& BOARD_64BIT
)
4615 flag
|= BOARD_64BIT
;
4619 pci_read_config_dword(pdev
, PCI_CONF_AMISIG64
, &magic64
);
4620 if (magic64
== HBA_SIGNATURE_64BIT
)
4621 flag
|= BOARD_64BIT
;
4624 subsysvid
= pdev
->subsystem_vendor
;
4625 subsysid
= pdev
->subsystem_device
;
4627 printk(KERN_NOTICE
"megaraid: found 0x%4.04x:0x%4.04x:bus %d:",
4628 id
->vendor
, id
->device
, pci_bus
);
4630 printk("slot %d:func %d\n",
4631 PCI_SLOT(pci_dev_func
), PCI_FUNC(pci_dev_func
));
4633 /* Read the base port and IRQ from PCI */
4634 mega_baseport
= pci_resource_start(pdev
, 0);
4637 tbase
= mega_baseport
;
4638 if (pci_resource_flags(pdev
, 0) & IORESOURCE_MEM
) {
4639 flag
|= BOARD_MEMMAP
;
4641 if (!request_mem_region(mega_baseport
, 128, "megaraid")) {
4642 printk(KERN_WARNING
"megaraid: mem region busy!\n");
4643 goto out_disable_device
;
4646 mega_baseport
= (unsigned long)ioremap(mega_baseport
, 128);
4647 if (!mega_baseport
) {
4649 "megaraid: could not map hba memory\n");
4650 goto out_release_region
;
4653 flag
|= BOARD_IOMAP
;
4654 mega_baseport
+= 0x10;
4656 if (!request_region(mega_baseport
, 16, "megaraid"))
4657 goto out_disable_device
;
4660 /* Initialize SCSI Host structure */
4661 host
= scsi_host_alloc(&megaraid_template
, sizeof(adapter_t
));
4665 adapter
= (adapter_t
*)host
->hostdata
;
4666 memset(adapter
, 0, sizeof(adapter_t
));
4669 "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n",
4670 host
->host_no
, mega_baseport
, irq
);
4672 adapter
->base
= mega_baseport
;
4674 INIT_LIST_HEAD(&adapter
->free_list
);
4675 INIT_LIST_HEAD(&adapter
->pending_list
);
4676 INIT_LIST_HEAD(&adapter
->completed_list
);
4678 adapter
->flag
= flag
;
4679 spin_lock_init(&adapter
->lock
);
4681 host
->cmd_per_lun
= max_cmd_per_lun
;
4682 host
->max_sectors
= max_sectors_per_io
;
4684 adapter
->dev
= pdev
;
4685 adapter
->host
= host
;
4687 adapter
->host
->irq
= irq
;
4689 if (flag
& BOARD_MEMMAP
)
4690 adapter
->host
->base
= tbase
;
4692 adapter
->host
->io_port
= tbase
;
4693 adapter
->host
->n_io_port
= 16;
4696 adapter
->host
->unique_id
= (pci_bus
<< 8) | pci_dev_func
;
4699 * Allocate buffer to issue internal commands.
4701 adapter
->mega_buffer
= pci_alloc_consistent(adapter
->dev
,
4702 MEGA_BUFFER_SIZE
, &adapter
->buf_dma_handle
);
4703 if (!adapter
->mega_buffer
) {
4704 printk(KERN_WARNING
"megaraid: out of RAM.\n");
4708 adapter
->scb_list
= kmalloc(sizeof(scb_t
) * MAX_COMMANDS
, GFP_KERNEL
);
4709 if (!adapter
->scb_list
) {
4710 printk(KERN_WARNING
"megaraid: out of RAM.\n");
4711 goto out_free_cmd_buffer
;
4714 if (request_irq(irq
, (adapter
->flag
& BOARD_MEMMAP
) ?
4715 megaraid_isr_memmapped
: megaraid_isr_iomapped
,
4716 SA_SHIRQ
, "megaraid", adapter
)) {
4718 "megaraid: Couldn't register IRQ %d!\n", irq
);
4719 goto out_free_scb_list
;
4722 if (mega_setup_mailbox(adapter
))
4725 if (mega_query_adapter(adapter
))
4729 * Have checks for some buggy f/w
4731 if ((subsysid
== 0x1111) && (subsysvid
== 0x1111)) {
4735 if (!strcmp(adapter
->fw_version
, "3.00") ||
4736 !strcmp(adapter
->fw_version
, "3.01")) {
4738 printk( KERN_WARNING
4739 "megaraid: Your card is a Dell PERC "
4740 "2/SC RAID controller with "
4741 "firmware\nmegaraid: 3.00 or 3.01. "
4742 "This driver is known to have "
4743 "corruption issues\nmegaraid: with "
4744 "those firmware versions on this "
4745 "specific card. In order\nmegaraid: "
4746 "to protect your data, please upgrade "
4747 "your firmware to version\nmegaraid: "
4748 "3.10 or later, available from the "
4749 "Dell Technical Support web\n"
4750 "megaraid: site at\nhttp://support."
4751 "dell.com/us/en/filelib/download/"
4752 "index.asp?fileid=2940\n"
4758 * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with
4759 * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit
4760 * support, since this firmware cannot handle 64 bit
4763 if ((subsysvid
== HP_SUBSYS_VID
) &&
4764 ((subsysid
== 0x60E7) || (subsysid
== 0x60E8))) {
4768 if (!strcmp(adapter
->fw_version
, "H01.07") ||
4769 !strcmp(adapter
->fw_version
, "H01.08") ||
4770 !strcmp(adapter
->fw_version
, "H01.09") ) {
4772 "megaraid: Firmware H.01.07, "
4773 "H.01.08, and H.01.09 on 1M/2M "
4775 "megaraid: do not support 64 bit "
4776 "addressing.\nmegaraid: DISABLING "
4777 "64 bit support.\n");
4778 adapter
->flag
&= ~BOARD_64BIT
;
4782 if (mega_is_bios_enabled(adapter
))
4783 mega_hbas
[hba_count
].is_bios_enabled
= 1;
4784 mega_hbas
[hba_count
].hostdata_addr
= adapter
;
4787 * Find out which channel is raid and which is scsi. This is
4790 mega_enum_raid_scsi(adapter
);
4793 * Find out if a logical drive is set as the boot drive. If
4794 * there is one, will make that as the first logical drive.
4795 * ROMB: Do we have to boot from a physical drive. Then all
4796 * the physical drives would appear before the logical disks.
4797 * Else, all the physical drives would be exported to the mid
4798 * layer after logical drives.
4800 mega_get_boot_drv(adapter
);
4802 if (adapter
->boot_pdrv_enabled
) {
4803 j
= adapter
->product_info
.nchannels
;
4804 for( i
= 0; i
< j
; i
++ )
4805 adapter
->logdrv_chan
[i
] = 0;
4806 for( i
= j
; i
< NVIRT_CHAN
+ j
; i
++ )
4807 adapter
->logdrv_chan
[i
] = 1;
4809 for (i
= 0; i
< NVIRT_CHAN
; i
++)
4810 adapter
->logdrv_chan
[i
] = 1;
4811 for (i
= NVIRT_CHAN
; i
< MAX_CHANNELS
+NVIRT_CHAN
; i
++)
4812 adapter
->logdrv_chan
[i
] = 0;
4813 adapter
->mega_ch_class
<<= NVIRT_CHAN
;
4817 * Do we support random deletion and addition of logical
4820 adapter
->read_ldidmap
= 0; /* set it after first logdrv
4822 adapter
->support_random_del
= mega_support_random_del(adapter
);
4824 /* Initialize SCBs */
4825 if (mega_init_scb(adapter
))
4829 * Reset the pending commands counter
4831 atomic_set(&adapter
->pend_cmds
, 0);
4834 * Reset the adapter quiescent flag
4836 atomic_set(&adapter
->quiescent
, 0);
4838 hba_soft_state
[hba_count
] = adapter
;
4841 * Fill in the structure which needs to be passed back to the
4842 * application when it does an ioctl() for controller related
4847 mcontroller
[i
].base
= mega_baseport
;
4848 mcontroller
[i
].irq
= irq
;
4849 mcontroller
[i
].numldrv
= adapter
->numldrv
;
4850 mcontroller
[i
].pcibus
= pci_bus
;
4851 mcontroller
[i
].pcidev
= id
->device
;
4852 mcontroller
[i
].pcifun
= PCI_FUNC (pci_dev_func
);
4853 mcontroller
[i
].pciid
= -1;
4854 mcontroller
[i
].pcivendor
= id
->vendor
;
4855 mcontroller
[i
].pcislot
= PCI_SLOT(pci_dev_func
);
4856 mcontroller
[i
].uid
= (pci_bus
<< 8) | pci_dev_func
;
4859 /* Set the Mode of addressing to 64 bit if we can */
4860 if ((adapter
->flag
& BOARD_64BIT
) && (sizeof(dma_addr_t
) == 8)) {
4861 pci_set_dma_mask(pdev
, 0xffffffffffffffffULL
);
4862 adapter
->has_64bit_addr
= 1;
4864 pci_set_dma_mask(pdev
, 0xffffffff);
4865 adapter
->has_64bit_addr
= 0;
4868 init_MUTEX(&adapter
->int_mtx
);
4869 init_completion(&adapter
->int_waitq
);
4871 adapter
->this_id
= DEFAULT_INITIATOR_ID
;
4872 adapter
->host
->this_id
= DEFAULT_INITIATOR_ID
;
4874 #if MEGA_HAVE_CLUSTERING
4876 * Is cluster support enabled on this controller
4877 * Note: In a cluster the HBAs ( the initiators ) will have
4878 * different target IDs and we cannot assume it to be 7. Call
4879 * to mega_support_cluster() will get the target ids also if
4880 * the cluster support is available
4882 adapter
->has_cluster
= mega_support_cluster(adapter
);
4883 if (adapter
->has_cluster
) {
4885 "megaraid: Cluster driver, initiator id:%d\n",
4890 pci_set_drvdata(pdev
, host
);
4892 mega_create_proc_entry(hba_count
, mega_proc_dir_entry
);
4894 error
= scsi_add_host(host
, &pdev
->dev
);
4898 scsi_scan_host(host
);
4903 pci_free_consistent(adapter
->dev
, sizeof(mbox64_t
),
4904 adapter
->una_mbox64
, adapter
->una_mbox64_dma
);
4906 free_irq(adapter
->host
->irq
, adapter
);
4908 kfree(adapter
->scb_list
);
4909 out_free_cmd_buffer
:
4910 pci_free_consistent(adapter
->dev
, MEGA_BUFFER_SIZE
,
4911 adapter
->mega_buffer
, adapter
->buf_dma_handle
);
4913 scsi_host_put(host
);
4915 if (flag
& BOARD_MEMMAP
)
4916 iounmap((void *)mega_baseport
);
4918 if (flag
& BOARD_MEMMAP
)
4919 release_mem_region(tbase
, 128);
4921 release_region(mega_baseport
, 16);
4923 pci_disable_device(pdev
);
4929 __megaraid_shutdown(adapter_t
*adapter
)
4931 u_char raw_mbox
[sizeof(struct mbox_out
)];
4932 mbox_t
*mbox
= (mbox_t
*)raw_mbox
;
4935 /* Flush adapter cache */
4936 memset(&mbox
->m_out
, 0, sizeof(raw_mbox
));
4937 raw_mbox
[0] = FLUSH_ADAPTER
;
4939 free_irq(adapter
->host
->irq
, adapter
);
4941 /* Issue a blocking (interrupts disabled) command to the card */
4942 issue_scb_block(adapter
, raw_mbox
);
4944 /* Flush disks cache */
4945 memset(&mbox
->m_out
, 0, sizeof(raw_mbox
));
4946 raw_mbox
[0] = FLUSH_SYSTEM
;
4948 /* Issue a blocking (interrupts disabled) command to the card */
4949 issue_scb_block(adapter
, raw_mbox
);
4951 if (atomic_read(&adapter
->pend_cmds
) > 0)
4952 printk(KERN_WARNING
"megaraid: pending commands!!\n");
4955 * Have a delibrate delay to make sure all the caches are
4958 for (i
= 0; i
<= 10; i
++)
4963 megaraid_remove_one(struct pci_dev
*pdev
)
4965 struct Scsi_Host
*host
= pci_get_drvdata(pdev
);
4966 adapter_t
*adapter
= (adapter_t
*)host
->hostdata
;
4967 char buf
[12] = { 0 };
4969 scsi_remove_host(host
);
4971 __megaraid_shutdown(adapter
);
4973 /* Free our resources */
4974 if (adapter
->flag
& BOARD_MEMMAP
) {
4975 iounmap((void *)adapter
->base
);
4976 release_mem_region(adapter
->host
->base
, 128);
4978 release_region(adapter
->base
, 16);
4980 mega_free_sgl(adapter
);
4982 #ifdef CONFIG_PROC_FS
4983 if (adapter
->controller_proc_dir_entry
) {
4984 remove_proc_entry("stat", adapter
->controller_proc_dir_entry
);
4985 remove_proc_entry("config",
4986 adapter
->controller_proc_dir_entry
);
4987 remove_proc_entry("mailbox",
4988 adapter
->controller_proc_dir_entry
);
4989 #if MEGA_HAVE_ENH_PROC
4990 remove_proc_entry("rebuild-rate",
4991 adapter
->controller_proc_dir_entry
);
4992 remove_proc_entry("battery-status",
4993 adapter
->controller_proc_dir_entry
);
4995 remove_proc_entry("diskdrives-ch0",
4996 adapter
->controller_proc_dir_entry
);
4997 remove_proc_entry("diskdrives-ch1",
4998 adapter
->controller_proc_dir_entry
);
4999 remove_proc_entry("diskdrives-ch2",
5000 adapter
->controller_proc_dir_entry
);
5001 remove_proc_entry("diskdrives-ch3",
5002 adapter
->controller_proc_dir_entry
);
5004 remove_proc_entry("raiddrives-0-9",
5005 adapter
->controller_proc_dir_entry
);
5006 remove_proc_entry("raiddrives-10-19",
5007 adapter
->controller_proc_dir_entry
);
5008 remove_proc_entry("raiddrives-20-29",
5009 adapter
->controller_proc_dir_entry
);
5010 remove_proc_entry("raiddrives-30-39",
5011 adapter
->controller_proc_dir_entry
);
5013 sprintf(buf
, "hba%d", adapter
->host
->host_no
);
5014 remove_proc_entry(buf
, mega_proc_dir_entry
);
5018 pci_free_consistent(adapter
->dev
, MEGA_BUFFER_SIZE
,
5019 adapter
->mega_buffer
, adapter
->buf_dma_handle
);
5020 kfree(adapter
->scb_list
);
5021 pci_free_consistent(adapter
->dev
, sizeof(mbox64_t
),
5022 adapter
->una_mbox64
, adapter
->una_mbox64_dma
);
5024 scsi_host_put(host
);
5025 pci_disable_device(pdev
);
5031 megaraid_shutdown(struct pci_dev
*pdev
)
5033 struct Scsi_Host
*host
= pci_get_drvdata(pdev
);
5034 adapter_t
*adapter
= (adapter_t
*)host
->hostdata
;
5036 __megaraid_shutdown(adapter
);
5039 static struct pci_device_id megaraid_pci_tbl
[] = {
5040 {PCI_VENDOR_ID_DELL
, PCI_DEVICE_ID_DISCOVERY
,
5041 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0},
5042 {PCI_VENDOR_ID_DELL
, PCI_DEVICE_ID_PERC4_DI
,
5043 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, BOARD_64BIT
},
5044 {PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_PERC4_QC_VERDE
,
5045 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, BOARD_64BIT
},
5046 {PCI_VENDOR_ID_AMI
, PCI_DEVICE_ID_AMI_MEGARAID
,
5047 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0},
5048 {PCI_VENDOR_ID_AMI
, PCI_DEVICE_ID_AMI_MEGARAID2
,
5049 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0},
5050 {PCI_VENDOR_ID_AMI
, PCI_DEVICE_ID_AMI_MEGARAID3
,
5051 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0},
5052 {PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_AMI_MEGARAID3
,
5053 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0},
5054 {PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_AMI_MEGARAID3
,
5055 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0},
5058 MODULE_DEVICE_TABLE(pci
, megaraid_pci_tbl
);
5060 static struct pci_driver megaraid_pci_driver
= {
5062 .id_table
= megaraid_pci_tbl
,
5063 .probe
= megaraid_probe_one
,
5064 .remove
= __devexit_p(megaraid_remove_one
),
5065 .shutdown
= megaraid_shutdown
,
5068 static int __init
megaraid_init(void)
5072 if ((max_cmd_per_lun
<= 0) || (max_cmd_per_lun
> MAX_CMD_PER_LUN
))
5073 max_cmd_per_lun
= MAX_CMD_PER_LUN
;
5074 if (max_mbox_busy_wait
> MBOX_BUSY_WAIT
)
5075 max_mbox_busy_wait
= MBOX_BUSY_WAIT
;
5077 #ifdef CONFIG_PROC_FS
5078 mega_proc_dir_entry
= proc_mkdir("megaraid", &proc_root
);
5079 if (!mega_proc_dir_entry
) {
5081 "megaraid: failed to create megaraid root\n");
5084 error
= pci_module_init(&megaraid_pci_driver
);
5086 #ifdef CONFIG_PROC_FS
5087 remove_proc_entry("megaraid", &proc_root
);
5093 * Register the driver as a character device, for applications
5094 * to access it for ioctls.
5095 * First argument (major) to register_chrdev implies a dynamic
5096 * major number allocation.
5098 major
= register_chrdev(0, "megadev", &megadev_fops
);
5101 "megaraid: failed to register char device\n");
5107 static void __exit
megaraid_exit(void)
5110 * Unregister the character device interface to the driver.
5112 unregister_chrdev(major
, "megadev");
5114 pci_unregister_driver(&megaraid_pci_driver
);
5116 #ifdef CONFIG_PROC_FS
5117 remove_proc_entry("megaraid", &proc_root
);
5121 module_init(megaraid_init
);
5122 module_exit(megaraid_exit
);
5124 /* vi: set ts=8 sw=8 tw=78: */