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/delay.h>
39 #include <linux/proc_fs.h>
40 #include <linux/reboot.h>
41 #include <linux/module.h>
42 #include <linux/list.h>
43 #include <linux/interrupt.h>
44 #include <linux/pci.h>
45 #include <linux/init.h>
46 #include <scsi/scsicam.h>
49 #include <scsi/scsi_host.h>
53 #define MEGARAID_MODULE_VERSION "2.00.3"
55 MODULE_AUTHOR ("LSI Logic Corporation");
56 MODULE_DESCRIPTION ("LSI Logic MegaRAID driver");
57 MODULE_LICENSE ("GPL");
58 MODULE_VERSION(MEGARAID_MODULE_VERSION
);
60 static unsigned int max_cmd_per_lun
= DEF_CMD_PER_LUN
;
61 module_param(max_cmd_per_lun
, uint
, 0);
62 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)");
64 static unsigned short int max_sectors_per_io
= MAX_SECTORS_PER_IO
;
65 module_param(max_sectors_per_io
, ushort
, 0);
66 MODULE_PARM_DESC(max_sectors_per_io
, "Maximum number of sectors per I/O request (default=MAX_SECTORS_PER_IO=128)");
69 static unsigned short int max_mbox_busy_wait
= MBOX_BUSY_WAIT
;
70 module_param(max_mbox_busy_wait
, ushort
, 0);
71 MODULE_PARM_DESC(max_mbox_busy_wait
, "Maximum wait for mailbox in microseconds if busy (default=MBOX_BUSY_WAIT=10)");
73 #define RDINDOOR(adapter) readl((adapter)->base + 0x20)
74 #define RDOUTDOOR(adapter) readl((adapter)->base + 0x2C)
75 #define WRINDOOR(adapter,value) writel(value, (adapter)->base + 0x20)
76 #define WROUTDOOR(adapter,value) writel(value, (adapter)->base + 0x2C)
83 static adapter_t
*hba_soft_state
[MAX_CONTROLLERS
];
84 static struct proc_dir_entry
*mega_proc_dir_entry
;
86 /* For controller re-ordering */
87 static struct mega_hbas mega_hbas
[MAX_CONTROLLERS
];
90 * The File Operations structure for the serial/ioctl interface of the driver
92 static struct file_operations megadev_fops
= {
94 .ioctl
= megadev_ioctl
,
99 * Array to structures for storing the information about the controllers. This
100 * information is sent to the user level applications, when they do an ioctl
101 * for this information.
103 static struct mcontroller mcontroller
[MAX_CONTROLLERS
];
105 /* The current driver version */
106 static u32 driver_ver
= 0x02000000;
108 /* major number used by the device for character interface */
111 #define IS_RAID_CH(hba, ch) (((hba)->mega_ch_class >> (ch)) & 0x01)
115 * Debug variable to print some diagnostic messages
117 static int trace_level
;
120 * mega_setup_mailbox()
121 * @adapter - pointer to our soft state
123 * Allocates a 8 byte aligned memory for the handshake mailbox.
126 mega_setup_mailbox(adapter_t
*adapter
)
130 adapter
->una_mbox64
= pci_alloc_consistent(adapter
->dev
,
131 sizeof(mbox64_t
), &adapter
->una_mbox64_dma
);
133 if( !adapter
->una_mbox64
) return -1;
135 adapter
->mbox
= &adapter
->una_mbox64
->mbox
;
137 adapter
->mbox
= (mbox_t
*)((((unsigned long) adapter
->mbox
) + 15) &
140 adapter
->mbox64
= (mbox64_t
*)(((unsigned long)adapter
->mbox
) - 8);
142 align
= ((void *)adapter
->mbox
) - ((void *)&adapter
->una_mbox64
->mbox
);
144 adapter
->mbox_dma
= adapter
->una_mbox64_dma
+ 8 + align
;
147 * Register the mailbox if the controller is an io-mapped controller
149 if( adapter
->flag
& BOARD_IOMAP
) {
151 outb_p(adapter
->mbox_dma
& 0xFF,
152 adapter
->host
->io_port
+ MBOX_PORT0
);
154 outb_p((adapter
->mbox_dma
>> 8) & 0xFF,
155 adapter
->host
->io_port
+ MBOX_PORT1
);
157 outb_p((adapter
->mbox_dma
>> 16) & 0xFF,
158 adapter
->host
->io_port
+ MBOX_PORT2
);
160 outb_p((adapter
->mbox_dma
>> 24) & 0xFF,
161 adapter
->host
->io_port
+ MBOX_PORT3
);
163 outb_p(ENABLE_MBOX_BYTE
,
164 adapter
->host
->io_port
+ ENABLE_MBOX_REGION
);
176 * mega_query_adapter()
177 * @adapter - pointer to our soft state
179 * Issue the adapter inquiry commands to the controller and find out
180 * information and parameter about the devices attached
183 mega_query_adapter(adapter_t
*adapter
)
185 dma_addr_t prod_info_dma_handle
;
186 mega_inquiry3
*inquiry3
;
187 u8 raw_mbox
[sizeof(struct mbox_out
)];
191 /* Initialize adapter inquiry mailbox */
193 mbox
= (mbox_t
*)raw_mbox
;
195 memset((void *)adapter
->mega_buffer
, 0, MEGA_BUFFER_SIZE
);
196 memset(&mbox
->m_out
, 0, sizeof(raw_mbox
));
199 * Try to issue Inquiry3 command
200 * if not succeeded, then issue MEGA_MBOXCMD_ADAPTERINQ command and
201 * update enquiry3 structure
203 mbox
->m_out
.xferaddr
= (u32
)adapter
->buf_dma_handle
;
205 inquiry3
= (mega_inquiry3
*)adapter
->mega_buffer
;
207 raw_mbox
[0] = FC_NEW_CONFIG
; /* i.e. mbox->cmd=0xA1 */
208 raw_mbox
[2] = NC_SUBOP_ENQUIRY3
; /* i.e. 0x0F */
209 raw_mbox
[3] = ENQ3_GET_SOLICITED_FULL
; /* i.e. 0x02 */
211 /* Issue a blocking command to the card */
212 if ((retval
= issue_scb_block(adapter
, raw_mbox
))) {
213 /* the adapter does not support 40ld */
215 mraid_ext_inquiry
*ext_inq
;
217 dma_addr_t dma_handle
;
219 ext_inq
= pci_alloc_consistent(adapter
->dev
,
220 sizeof(mraid_ext_inquiry
), &dma_handle
);
222 if( ext_inq
== NULL
) return -1;
224 inq
= &ext_inq
->raid_inq
;
226 mbox
->m_out
.xferaddr
= (u32
)dma_handle
;
228 /*issue old 0x04 command to adapter */
229 mbox
->m_out
.cmd
= MEGA_MBOXCMD_ADPEXTINQ
;
231 issue_scb_block(adapter
, raw_mbox
);
234 * update Enquiry3 and ProductInfo structures with
235 * mraid_inquiry structure
237 mega_8_to_40ld(inq
, inquiry3
,
238 (mega_product_info
*)&adapter
->product_info
);
240 pci_free_consistent(adapter
->dev
, sizeof(mraid_ext_inquiry
),
241 ext_inq
, dma_handle
);
243 } else { /*adapter supports 40ld */
244 adapter
->flag
|= BOARD_40LD
;
247 * get product_info, which is static information and will be
250 prod_info_dma_handle
= pci_map_single(adapter
->dev
, (void *)
251 &adapter
->product_info
,
252 sizeof(mega_product_info
), PCI_DMA_FROMDEVICE
);
254 mbox
->m_out
.xferaddr
= prod_info_dma_handle
;
256 raw_mbox
[0] = FC_NEW_CONFIG
; /* i.e. mbox->cmd=0xA1 */
257 raw_mbox
[2] = NC_SUBOP_PRODUCT_INFO
; /* i.e. 0x0E */
259 if ((retval
= issue_scb_block(adapter
, raw_mbox
)))
261 "megaraid: Product_info cmd failed with error: %d\n",
264 pci_unmap_single(adapter
->dev
, prod_info_dma_handle
,
265 sizeof(mega_product_info
), PCI_DMA_FROMDEVICE
);
270 * kernel scans the channels from 0 to <= max_channel
272 adapter
->host
->max_channel
=
273 adapter
->product_info
.nchannels
+ NVIRT_CHAN
-1;
275 adapter
->host
->max_id
= 16; /* max targets per channel */
277 adapter
->host
->max_lun
= 7; /* Upto 7 luns for non disk devices */
279 adapter
->host
->cmd_per_lun
= max_cmd_per_lun
;
281 adapter
->numldrv
= inquiry3
->num_ldrv
;
283 adapter
->max_cmds
= adapter
->product_info
.max_commands
;
285 if(adapter
->max_cmds
> MAX_COMMANDS
)
286 adapter
->max_cmds
= MAX_COMMANDS
;
288 adapter
->host
->can_queue
= adapter
->max_cmds
- 1;
291 * Get the maximum number of scatter-gather elements supported by this
294 mega_get_max_sgl(adapter
);
296 adapter
->host
->sg_tablesize
= adapter
->sglen
;
299 /* use HP firmware and bios version encoding */
300 if (adapter
->product_info
.subsysvid
== HP_SUBSYS_VID
) {
301 sprintf (adapter
->fw_version
, "%c%d%d.%d%d",
302 adapter
->product_info
.fw_version
[2],
303 adapter
->product_info
.fw_version
[1] >> 8,
304 adapter
->product_info
.fw_version
[1] & 0x0f,
305 adapter
->product_info
.fw_version
[0] >> 8,
306 adapter
->product_info
.fw_version
[0] & 0x0f);
307 sprintf (adapter
->bios_version
, "%c%d%d.%d%d",
308 adapter
->product_info
.bios_version
[2],
309 adapter
->product_info
.bios_version
[1] >> 8,
310 adapter
->product_info
.bios_version
[1] & 0x0f,
311 adapter
->product_info
.bios_version
[0] >> 8,
312 adapter
->product_info
.bios_version
[0] & 0x0f);
314 memcpy(adapter
->fw_version
,
315 (char *)adapter
->product_info
.fw_version
, 4);
316 adapter
->fw_version
[4] = 0;
318 memcpy(adapter
->bios_version
,
319 (char *)adapter
->product_info
.bios_version
, 4);
321 adapter
->bios_version
[4] = 0;
324 printk(KERN_NOTICE
"megaraid: [%s:%s] detected %d logical drives.\n",
325 adapter
->fw_version
, adapter
->bios_version
, adapter
->numldrv
);
328 * Do we support extended (>10 bytes) cdbs
330 adapter
->support_ext_cdb
= mega_support_ext_cdb(adapter
);
331 if (adapter
->support_ext_cdb
)
332 printk(KERN_NOTICE
"megaraid: supports extended CDBs.\n");
340 * @adapter - pointer to our soft state
342 * Runs through the list of pending requests.
345 mega_runpendq(adapter_t
*adapter
)
347 if(!list_empty(&adapter
->pending_list
))
348 __mega_runpendq(adapter
);
353 * @scmd - Issue this scsi command
354 * @done - the callback hook into the scsi mid-layer
356 * The command queuing entry point for the mid-layer.
359 megaraid_queue(Scsi_Cmnd
*scmd
, void (*done
)(Scsi_Cmnd
*))
365 adapter
= (adapter_t
*)scmd
->device
->host
->hostdata
;
367 scmd
->scsi_done
= done
;
371 * Allocate and build a SCB request
372 * busy flag will be set if mega_build_cmd() command could not
373 * allocate scb. We will return non-zero status in that case.
374 * NOTE: scb can be null even though certain commands completed
375 * successfully, e.g., MODE_SENSE and TEST_UNIT_READY, we would
376 * return 0 in that case.
379 scb
= mega_build_cmd(adapter
, scmd
, &busy
);
382 scb
->state
|= SCB_PENDQ
;
383 list_add_tail(&scb
->list
, &adapter
->pending_list
);
386 * Check if the HBA is in quiescent state, e.g., during a
387 * delete logical drive opertion. If it is, don't run
390 if(atomic_read(&adapter
->quiescent
) == 0) {
391 mega_runpendq(adapter
);
400 * mega_allocate_scb()
401 * @adapter - pointer to our soft state
402 * @cmd - scsi command from the mid-layer
404 * Allocate a SCB structure. This is the central structure for controller
407 static inline scb_t
*
408 mega_allocate_scb(adapter_t
*adapter
, Scsi_Cmnd
*cmd
)
410 struct list_head
*head
= &adapter
->free_list
;
413 /* Unlink command from Free List */
414 if( !list_empty(head
) ) {
416 scb
= list_entry(head
->next
, scb_t
, list
);
418 list_del_init(head
->next
);
420 scb
->state
= SCB_ACTIVE
;
422 scb
->dma_type
= MEGA_DMA_TYPE_NONE
;
431 * mega_get_ldrv_num()
432 * @adapter - pointer to our soft state
433 * @cmd - scsi mid layer command
434 * @channel - channel on the controller
436 * Calculate the logical drive number based on the information in scsi command
437 * and the channel number.
440 mega_get_ldrv_num(adapter_t
*adapter
, Scsi_Cmnd
*cmd
, int channel
)
445 tgt
= cmd
->device
->id
;
447 if ( tgt
> adapter
->this_id
)
448 tgt
--; /* we do not get inquires for initiator id */
450 ldrv_num
= (channel
* 15) + tgt
;
454 * If we have a logical drive with boot enabled, project it first
456 if( adapter
->boot_ldrv_enabled
) {
457 if( ldrv_num
== 0 ) {
458 ldrv_num
= adapter
->boot_ldrv
;
461 if( ldrv_num
<= adapter
->boot_ldrv
) {
468 * If "delete logical drive" feature is enabled on this controller.
469 * Do only if at least one delete logical drive operation was done.
471 * Also, after logical drive deletion, instead of logical drive number,
472 * the value returned should be 0x80+logical drive id.
474 * These is valid only for IO commands.
477 if (adapter
->support_random_del
&& adapter
->read_ldidmap
)
478 switch (cmd
->cmnd
[0]) {
479 case READ_6
: /* fall through */
480 case WRITE_6
: /* fall through */
481 case READ_10
: /* fall through */
491 * @adapter - pointer to our soft state
492 * @cmd - Prepare using this scsi command
493 * @busy - busy flag if no resources
495 * Prepares a command and scatter gather list for the controller. This routine
496 * also finds out if the commands is intended for a logical drive or a
497 * physical device and prepares the controller command accordingly.
499 * We also re-order the logical drives and physical devices based on their
503 mega_build_cmd(adapter_t
*adapter
, Scsi_Cmnd
*cmd
, int *busy
)
505 mega_ext_passthru
*epthru
;
506 mega_passthru
*pthru
;
514 int ldrv_num
= 0; /* logical drive number */
518 * filter the internal and ioctl commands
520 if((cmd
->cmnd
[0] == MEGA_INTERNAL_CMD
)) {
526 * We know what channels our logical drives are on - mega_find_card()
528 islogical
= adapter
->logdrv_chan
[cmd
->device
->channel
];
531 * The theory: If physical drive is chosen for boot, all the physical
532 * devices are exported before the logical drives, otherwise physical
533 * devices are pushed after logical drives, in which case - Kernel sees
534 * the physical devices on virtual channel which is obviously converted
535 * to actual channel on the HBA.
537 if( adapter
->boot_pdrv_enabled
) {
539 /* logical channel */
540 channel
= cmd
->device
->channel
-
541 adapter
->product_info
.nchannels
;
544 /* this is physical channel */
545 channel
= cmd
->device
->channel
;
546 target
= cmd
->device
->id
;
549 * boot from a physical disk, that disk needs to be
550 * exposed first IF both the channels are SCSI, then
551 * booting from the second channel is not allowed.
554 target
= adapter
->boot_pdrv_tgt
;
556 else if( target
== adapter
->boot_pdrv_tgt
) {
563 /* this is the logical channel */
564 channel
= cmd
->device
->channel
;
567 /* physical channel */
568 channel
= cmd
->device
->channel
- NVIRT_CHAN
;
569 target
= cmd
->device
->id
;
576 /* have just LUN 0 for each target on virtual channels */
577 if (cmd
->device
->lun
) {
578 cmd
->result
= (DID_BAD_TARGET
<< 16);
583 ldrv_num
= mega_get_ldrv_num(adapter
, cmd
, channel
);
586 max_ldrv_num
= (adapter
->flag
& BOARD_40LD
) ?
587 MAX_LOGICAL_DRIVES_40LD
: MAX_LOGICAL_DRIVES_8LD
;
590 * max_ldrv_num increases by 0x80 if some logical drive was
593 if(adapter
->read_ldidmap
)
594 max_ldrv_num
+= 0x80;
596 if(ldrv_num
> max_ldrv_num
) {
597 cmd
->result
= (DID_BAD_TARGET
<< 16);
604 if( cmd
->device
->lun
> 7) {
606 * Do not support lun >7 for physically accessed
609 cmd
->result
= (DID_BAD_TARGET
<< 16);
617 * Logical drive commands
621 switch (cmd
->cmnd
[0]) {
622 case TEST_UNIT_READY
:
623 memset(cmd
->request_buffer
, 0, cmd
->request_bufflen
);
625 #if MEGA_HAVE_CLUSTERING
627 * Do we support clustering and is the support enabled
628 * If no, return success always
630 if( !adapter
->has_cluster
) {
631 cmd
->result
= (DID_OK
<< 16);
636 if(!(scb
= mega_allocate_scb(adapter
, cmd
))) {
641 scb
->raw_mbox
[0] = MEGA_CLUSTER_CMD
;
642 scb
->raw_mbox
[2] = MEGA_RESERVATION_STATUS
;
643 scb
->raw_mbox
[3] = ldrv_num
;
645 scb
->dma_direction
= PCI_DMA_NONE
;
649 cmd
->result
= (DID_OK
<< 16);
655 memset(cmd
->request_buffer
, 0, cmd
->cmnd
[4]);
656 cmd
->result
= (DID_OK
<< 16);
663 if(!(adapter
->flag
& (1L << cmd
->device
->channel
))) {
666 "scsi%d: scanning scsi channel %d ",
667 adapter
->host
->host_no
,
668 cmd
->device
->channel
);
669 printk("for logical drives.\n");
671 adapter
->flag
|= (1L << cmd
->device
->channel
);
674 /* Allocate a SCB and initialize passthru */
675 if(!(scb
= mega_allocate_scb(adapter
, cmd
))) {
681 mbox
= (mbox_t
*)scb
->raw_mbox
;
682 memset(mbox
, 0, sizeof(scb
->raw_mbox
));
683 memset(pthru
, 0, sizeof(mega_passthru
));
687 pthru
->reqsenselen
= 14;
688 pthru
->islogical
= 1;
689 pthru
->logdrv
= ldrv_num
;
690 pthru
->cdblen
= cmd
->cmd_len
;
691 memcpy(pthru
->cdb
, cmd
->cmnd
, cmd
->cmd_len
);
693 if( adapter
->has_64bit_addr
) {
694 mbox
->m_out
.cmd
= MEGA_MBOXCMD_PASSTHRU64
;
697 mbox
->m_out
.cmd
= MEGA_MBOXCMD_PASSTHRU
;
700 scb
->dma_direction
= PCI_DMA_FROMDEVICE
;
702 pthru
->numsgelements
= mega_build_sglist(adapter
, scb
,
703 &pthru
->dataxferaddr
, &pthru
->dataxferlen
);
705 mbox
->m_out
.xferaddr
= scb
->pthru_dma_addr
;
716 /* Allocate a SCB and initialize mailbox */
717 if(!(scb
= mega_allocate_scb(adapter
, cmd
))) {
721 mbox
= (mbox_t
*)scb
->raw_mbox
;
723 memset(mbox
, 0, sizeof(scb
->raw_mbox
));
724 mbox
->m_out
.logdrv
= ldrv_num
;
727 * A little hack: 2nd bit is zero for all scsi read
728 * commands and is set for all scsi write commands
730 if( adapter
->has_64bit_addr
) {
731 mbox
->m_out
.cmd
= (*cmd
->cmnd
& 0x02) ?
732 MEGA_MBOXCMD_LWRITE64
:
733 MEGA_MBOXCMD_LREAD64
;
736 mbox
->m_out
.cmd
= (*cmd
->cmnd
& 0x02) ?
742 * 6-byte READ(0x08) or WRITE(0x0A) cdb
744 if( cmd
->cmd_len
== 6 ) {
745 mbox
->m_out
.numsectors
= (u32
) cmd
->cmnd
[4];
747 ((u32
)cmd
->cmnd
[1] << 16) |
748 ((u32
)cmd
->cmnd
[2] << 8) |
751 mbox
->m_out
.lba
&= 0x1FFFFF;
755 * Take modulo 0x80, since the logical drive
756 * number increases by 0x80 when a logical
759 if (*cmd
->cmnd
== READ_6
) {
760 adapter
->nreads
[ldrv_num
%0x80]++;
761 adapter
->nreadblocks
[ldrv_num
%0x80] +=
762 mbox
->m_out
.numsectors
;
764 adapter
->nwrites
[ldrv_num
%0x80]++;
765 adapter
->nwriteblocks
[ldrv_num
%0x80] +=
766 mbox
->m_out
.numsectors
;
772 * 10-byte READ(0x28) or WRITE(0x2A) cdb
774 if( cmd
->cmd_len
== 10 ) {
775 mbox
->m_out
.numsectors
=
777 ((u32
)cmd
->cmnd
[7] << 8);
779 ((u32
)cmd
->cmnd
[2] << 24) |
780 ((u32
)cmd
->cmnd
[3] << 16) |
781 ((u32
)cmd
->cmnd
[4] << 8) |
785 if (*cmd
->cmnd
== READ_10
) {
786 adapter
->nreads
[ldrv_num
%0x80]++;
787 adapter
->nreadblocks
[ldrv_num
%0x80] +=
788 mbox
->m_out
.numsectors
;
790 adapter
->nwrites
[ldrv_num
%0x80]++;
791 adapter
->nwriteblocks
[ldrv_num
%0x80] +=
792 mbox
->m_out
.numsectors
;
798 * 12-byte READ(0xA8) or WRITE(0xAA) cdb
800 if( cmd
->cmd_len
== 12 ) {
802 ((u32
)cmd
->cmnd
[2] << 24) |
803 ((u32
)cmd
->cmnd
[3] << 16) |
804 ((u32
)cmd
->cmnd
[4] << 8) |
807 mbox
->m_out
.numsectors
=
808 ((u32
)cmd
->cmnd
[6] << 24) |
809 ((u32
)cmd
->cmnd
[7] << 16) |
810 ((u32
)cmd
->cmnd
[8] << 8) |
814 if (*cmd
->cmnd
== READ_12
) {
815 adapter
->nreads
[ldrv_num
%0x80]++;
816 adapter
->nreadblocks
[ldrv_num
%0x80] +=
817 mbox
->m_out
.numsectors
;
819 adapter
->nwrites
[ldrv_num
%0x80]++;
820 adapter
->nwriteblocks
[ldrv_num
%0x80] +=
821 mbox
->m_out
.numsectors
;
827 * If it is a read command
829 if( (*cmd
->cmnd
& 0x0F) == 0x08 ) {
830 scb
->dma_direction
= PCI_DMA_FROMDEVICE
;
833 scb
->dma_direction
= PCI_DMA_TODEVICE
;
836 /* Calculate Scatter-Gather info */
837 mbox
->m_out
.numsgelements
= mega_build_sglist(adapter
, scb
,
838 (u32
*)&mbox
->m_out
.xferaddr
, (u32
*)&seg
);
842 #if MEGA_HAVE_CLUSTERING
843 case RESERVE
: /* Fall through */
847 * Do we support clustering and is the support enabled
849 if( ! adapter
->has_cluster
) {
851 cmd
->result
= (DID_BAD_TARGET
<< 16);
856 /* Allocate a SCB and initialize mailbox */
857 if(!(scb
= mega_allocate_scb(adapter
, cmd
))) {
862 scb
->raw_mbox
[0] = MEGA_CLUSTER_CMD
;
863 scb
->raw_mbox
[2] = ( *cmd
->cmnd
== RESERVE
) ?
864 MEGA_RESERVE_LD
: MEGA_RELEASE_LD
;
866 scb
->raw_mbox
[3] = ldrv_num
;
868 scb
->dma_direction
= PCI_DMA_NONE
;
874 cmd
->result
= (DID_BAD_TARGET
<< 16);
881 * Passthru drive commands
884 /* Allocate a SCB and initialize passthru */
885 if(!(scb
= mega_allocate_scb(adapter
, cmd
))) {
890 mbox
= (mbox_t
*)scb
->raw_mbox
;
891 memset(mbox
, 0, sizeof(scb
->raw_mbox
));
893 if( adapter
->support_ext_cdb
) {
895 epthru
= mega_prepare_extpassthru(adapter
, scb
, cmd
,
898 mbox
->m_out
.cmd
= MEGA_MBOXCMD_EXTPTHRU
;
900 mbox
->m_out
.xferaddr
= scb
->epthru_dma_addr
;
905 pthru
= mega_prepare_passthru(adapter
, scb
, cmd
,
908 /* Initialize mailbox */
909 if( adapter
->has_64bit_addr
) {
910 mbox
->m_out
.cmd
= MEGA_MBOXCMD_PASSTHRU64
;
913 mbox
->m_out
.cmd
= MEGA_MBOXCMD_PASSTHRU
;
916 mbox
->m_out
.xferaddr
= scb
->pthru_dma_addr
;
926 * mega_prepare_passthru()
927 * @adapter - pointer to our soft state
928 * @scb - our scsi control block
929 * @cmd - scsi command from the mid-layer
930 * @channel - actual channel on the controller
931 * @target - actual id on the controller.
933 * prepare a command for the scsi physical devices.
935 static mega_passthru
*
936 mega_prepare_passthru(adapter_t
*adapter
, scb_t
*scb
, Scsi_Cmnd
*cmd
,
937 int channel
, int target
)
939 mega_passthru
*pthru
;
942 memset(pthru
, 0, sizeof (mega_passthru
));
944 /* 0=6sec/1=60sec/2=10min/3=3hrs */
948 pthru
->reqsenselen
= 14;
949 pthru
->islogical
= 0;
951 pthru
->channel
= (adapter
->flag
& BOARD_40LD
) ? 0 : channel
;
953 pthru
->target
= (adapter
->flag
& BOARD_40LD
) ?
954 (channel
<< 4) | target
: target
;
956 pthru
->cdblen
= cmd
->cmd_len
;
957 pthru
->logdrv
= cmd
->device
->lun
;
959 memcpy(pthru
->cdb
, cmd
->cmnd
, cmd
->cmd_len
);
961 /* Not sure about the direction */
962 scb
->dma_direction
= PCI_DMA_BIDIRECTIONAL
;
964 /* Special Code for Handling READ_CAPA/ INQ using bounce buffers */
965 switch (cmd
->cmnd
[0]) {
968 if(!(adapter
->flag
& (1L << cmd
->device
->channel
))) {
971 "scsi%d: scanning scsi channel %d [P%d] ",
972 adapter
->host
->host_no
,
973 cmd
->device
->channel
, channel
);
974 printk("for physical devices.\n");
976 adapter
->flag
|= (1L << cmd
->device
->channel
);
980 pthru
->numsgelements
= mega_build_sglist(adapter
, scb
,
981 &pthru
->dataxferaddr
, &pthru
->dataxferlen
);
989 * mega_prepare_extpassthru()
990 * @adapter - pointer to our soft state
991 * @scb - our scsi control block
992 * @cmd - scsi command from the mid-layer
993 * @channel - actual channel on the controller
994 * @target - actual id on the controller.
996 * prepare a command for the scsi physical devices. This rountine prepares
997 * commands for devices which can take extended CDBs (>10 bytes)
999 static mega_ext_passthru
*
1000 mega_prepare_extpassthru(adapter_t
*adapter
, scb_t
*scb
, Scsi_Cmnd
*cmd
,
1001 int channel
, int target
)
1003 mega_ext_passthru
*epthru
;
1005 epthru
= scb
->epthru
;
1006 memset(epthru
, 0, sizeof(mega_ext_passthru
));
1008 /* 0=6sec/1=60sec/2=10min/3=3hrs */
1009 epthru
->timeout
= 2;
1012 epthru
->reqsenselen
= 14;
1013 epthru
->islogical
= 0;
1015 epthru
->channel
= (adapter
->flag
& BOARD_40LD
) ? 0 : channel
;
1016 epthru
->target
= (adapter
->flag
& BOARD_40LD
) ?
1017 (channel
<< 4) | target
: target
;
1019 epthru
->cdblen
= cmd
->cmd_len
;
1020 epthru
->logdrv
= cmd
->device
->lun
;
1022 memcpy(epthru
->cdb
, cmd
->cmnd
, cmd
->cmd_len
);
1024 /* Not sure about the direction */
1025 scb
->dma_direction
= PCI_DMA_BIDIRECTIONAL
;
1027 switch(cmd
->cmnd
[0]) {
1030 if(!(adapter
->flag
& (1L << cmd
->device
->channel
))) {
1033 "scsi%d: scanning scsi channel %d [P%d] ",
1034 adapter
->host
->host_no
,
1035 cmd
->device
->channel
, channel
);
1036 printk("for physical devices.\n");
1038 adapter
->flag
|= (1L << cmd
->device
->channel
);
1042 epthru
->numsgelements
= mega_build_sglist(adapter
, scb
,
1043 &epthru
->dataxferaddr
, &epthru
->dataxferlen
);
1051 __mega_runpendq(adapter_t
*adapter
)
1054 struct list_head
*pos
, *next
;
1056 /* Issue any pending commands to the card */
1057 list_for_each_safe(pos
, next
, &adapter
->pending_list
) {
1059 scb
= list_entry(pos
, scb_t
, list
);
1061 if( !(scb
->state
& SCB_ISSUED
) ) {
1063 if( issue_scb(adapter
, scb
) != 0 )
1074 * @adapter - pointer to our soft state
1075 * @scb - scsi control block
1077 * Post a command to the card if the mailbox is available, otherwise return
1078 * busy. We also take the scb from the pending list if the mailbox is
1082 issue_scb(adapter_t
*adapter
, scb_t
*scb
)
1084 volatile mbox64_t
*mbox64
= adapter
->mbox64
;
1085 volatile mbox_t
*mbox
= adapter
->mbox
;
1088 if(unlikely(mbox
->m_in
.busy
)) {
1092 } while( mbox
->m_in
.busy
&& (i
< max_mbox_busy_wait
) );
1094 if(mbox
->m_in
.busy
) return -1;
1097 /* Copy mailbox data into host structure */
1098 memcpy((char *)&mbox
->m_out
, (char *)scb
->raw_mbox
,
1099 sizeof(struct mbox_out
));
1101 mbox
->m_out
.cmdid
= scb
->idx
; /* Set cmdid */
1102 mbox
->m_in
.busy
= 1; /* Set busy */
1106 * Increment the pending queue counter
1108 atomic_inc(&adapter
->pend_cmds
);
1110 switch (mbox
->m_out
.cmd
) {
1111 case MEGA_MBOXCMD_LREAD64
:
1112 case MEGA_MBOXCMD_LWRITE64
:
1113 case MEGA_MBOXCMD_PASSTHRU64
:
1114 case MEGA_MBOXCMD_EXTPTHRU
:
1115 mbox64
->xfer_segment_lo
= mbox
->m_out
.xferaddr
;
1116 mbox64
->xfer_segment_hi
= 0;
1117 mbox
->m_out
.xferaddr
= 0xFFFFFFFF;
1120 mbox64
->xfer_segment_lo
= 0;
1121 mbox64
->xfer_segment_hi
= 0;
1127 scb
->state
|= SCB_ISSUED
;
1129 if( likely(adapter
->flag
& BOARD_MEMMAP
) ) {
1130 mbox
->m_in
.poll
= 0;
1132 WRINDOOR(adapter
, adapter
->mbox_dma
| 0x1);
1135 irq_enable(adapter
);
1136 issue_command(adapter
);
1143 * Wait until the controller's mailbox is available
1146 mega_busywait_mbox (adapter_t
*adapter
)
1148 if (adapter
->mbox
->m_in
.busy
)
1149 return __mega_busywait_mbox(adapter
);
1155 * @adapter - pointer to our soft state
1156 * @raw_mbox - the mailbox
1158 * Issue a scb in synchronous and non-interrupt mode
1161 issue_scb_block(adapter_t
*adapter
, u_char
*raw_mbox
)
1163 volatile mbox64_t
*mbox64
= adapter
->mbox64
;
1164 volatile mbox_t
*mbox
= adapter
->mbox
;
1167 /* Wait until mailbox is free */
1168 if(mega_busywait_mbox (adapter
))
1169 goto bug_blocked_mailbox
;
1171 /* Copy mailbox data into host structure */
1172 memcpy((char *) mbox
, raw_mbox
, sizeof(struct mbox_out
));
1173 mbox
->m_out
.cmdid
= 0xFE;
1174 mbox
->m_in
.busy
= 1;
1176 switch (raw_mbox
[0]) {
1177 case MEGA_MBOXCMD_LREAD64
:
1178 case MEGA_MBOXCMD_LWRITE64
:
1179 case MEGA_MBOXCMD_PASSTHRU64
:
1180 case MEGA_MBOXCMD_EXTPTHRU
:
1181 mbox64
->xfer_segment_lo
= mbox
->m_out
.xferaddr
;
1182 mbox64
->xfer_segment_hi
= 0;
1183 mbox
->m_out
.xferaddr
= 0xFFFFFFFF;
1186 mbox64
->xfer_segment_lo
= 0;
1187 mbox64
->xfer_segment_hi
= 0;
1190 if( likely(adapter
->flag
& BOARD_MEMMAP
) ) {
1191 mbox
->m_in
.poll
= 0;
1193 mbox
->m_in
.numstatus
= 0xFF;
1194 mbox
->m_in
.status
= 0xFF;
1195 WRINDOOR(adapter
, adapter
->mbox_dma
| 0x1);
1197 while((volatile u8
)mbox
->m_in
.numstatus
== 0xFF)
1200 mbox
->m_in
.numstatus
= 0xFF;
1202 while( (volatile u8
)mbox
->m_in
.poll
!= 0x77 )
1205 mbox
->m_in
.poll
= 0;
1206 mbox
->m_in
.ack
= 0x77;
1208 WRINDOOR(adapter
, adapter
->mbox_dma
| 0x2);
1210 while(RDINDOOR(adapter
) & 0x2)
1214 irq_disable(adapter
);
1215 issue_command(adapter
);
1217 while (!((byte
= irq_state(adapter
)) & INTR_VALID
))
1220 set_irq_state(adapter
, byte
);
1221 irq_enable(adapter
);
1225 return mbox
->m_in
.status
;
1227 bug_blocked_mailbox
:
1228 printk(KERN_WARNING
"megaraid: Blocked mailbox......!!\n");
1235 * megaraid_isr_iomapped()
1237 * @devp - pointer to our soft state
1240 * Interrupt service routine for io-mapped controllers.
1241 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1242 * and service the completed commands.
1245 megaraid_isr_iomapped(int irq
, void *devp
, struct pt_regs
*regs
)
1247 adapter_t
*adapter
= devp
;
1248 unsigned long flags
;
1251 u8 completed
[MAX_FIRMWARE_STATUS
];
1257 * loop till F/W has more commands for us to complete.
1259 spin_lock_irqsave(&adapter
->lock
, flags
);
1262 /* Check if a valid interrupt is pending */
1263 byte
= irq_state(adapter
);
1264 if( (byte
& VALID_INTR_BYTE
) == 0 ) {
1266 * No more pending commands
1270 set_irq_state(adapter
, byte
);
1272 while((nstatus
= (volatile u8
)adapter
->mbox
->m_in
.numstatus
)
1275 adapter
->mbox
->m_in
.numstatus
= 0xFF;
1277 status
= adapter
->mbox
->m_in
.status
;
1280 * decrement the pending queue counter
1282 atomic_sub(nstatus
, &adapter
->pend_cmds
);
1284 memcpy(completed
, (void *)adapter
->mbox
->m_in
.completed
,
1287 /* Acknowledge interrupt */
1290 mega_cmd_done(adapter
, completed
, nstatus
, status
);
1292 mega_rundoneq(adapter
);
1296 /* Loop through any pending requests */
1297 if(atomic_read(&adapter
->quiescent
) == 0) {
1298 mega_runpendq(adapter
);
1305 spin_unlock_irqrestore(&adapter
->lock
, flags
);
1307 return IRQ_RETVAL(handled
);
1312 * megaraid_isr_memmapped()
1314 * @devp - pointer to our soft state
1317 * Interrupt service routine for memory-mapped controllers.
1318 * Find out if our device is interrupting. If yes, acknowledge the interrupt
1319 * and service the completed commands.
1322 megaraid_isr_memmapped(int irq
, void *devp
, struct pt_regs
*regs
)
1324 adapter_t
*adapter
= devp
;
1325 unsigned long flags
;
1329 u8 completed
[MAX_FIRMWARE_STATUS
];
1334 * loop till F/W has more commands for us to complete.
1336 spin_lock_irqsave(&adapter
->lock
, flags
);
1339 /* Check if a valid interrupt is pending */
1340 dword
= RDOUTDOOR(adapter
);
1341 if(dword
!= 0x10001234) {
1343 * No more pending commands
1347 WROUTDOOR(adapter
, 0x10001234);
1349 while((nstatus
= (volatile u8
)adapter
->mbox
->m_in
.numstatus
)
1353 adapter
->mbox
->m_in
.numstatus
= 0xFF;
1355 status
= adapter
->mbox
->m_in
.status
;
1358 * decrement the pending queue counter
1360 atomic_sub(nstatus
, &adapter
->pend_cmds
);
1362 memcpy(completed
, (void *)adapter
->mbox
->m_in
.completed
,
1365 /* Acknowledge interrupt */
1366 WRINDOOR(adapter
, 0x2);
1370 while( RDINDOOR(adapter
) & 0x02 ) cpu_relax();
1372 mega_cmd_done(adapter
, completed
, nstatus
, status
);
1374 mega_rundoneq(adapter
);
1376 /* Loop through any pending requests */
1377 if(atomic_read(&adapter
->quiescent
) == 0) {
1378 mega_runpendq(adapter
);
1385 spin_unlock_irqrestore(&adapter
->lock
, flags
);
1387 return IRQ_RETVAL(handled
);
1391 * @adapter - pointer to our soft state
1392 * @completed - array of ids of completed commands
1393 * @nstatus - number of completed commands
1394 * @status - status of the last command completed
1396 * Complete the comamnds and call the scsi mid-layer callback hooks.
1399 mega_cmd_done(adapter_t
*adapter
, u8 completed
[], int nstatus
, int status
)
1401 mega_ext_passthru
*epthru
= NULL
;
1402 struct scatterlist
*sgl
;
1403 Scsi_Cmnd
*cmd
= NULL
;
1404 mega_passthru
*pthru
= NULL
;
1405 mbox_t
*mbox
= NULL
;
1413 * for all the commands completed, call the mid-layer callback routine
1416 for( i
= 0; i
< nstatus
; i
++ ) {
1418 cmdid
= completed
[i
];
1420 if( cmdid
== CMDID_INT_CMDS
) { /* internal command */
1421 scb
= &adapter
->int_scb
;
1423 mbox
= (mbox_t
*)scb
->raw_mbox
;
1426 * Internal command interface do not fire the extended
1427 * passthru or 64-bit passthru
1433 scb
= &adapter
->scb_list
[cmdid
];
1436 * Make sure f/w has completed a valid command
1438 if( !(scb
->state
& SCB_ISSUED
) || scb
->cmd
== NULL
) {
1440 "megaraid: invalid command ");
1441 printk("Id %d, scb->state:%x, scsi cmd:%p\n",
1442 cmdid
, scb
->state
, scb
->cmd
);
1448 * Was a abort issued for this command
1450 if( scb
->state
& SCB_ABORT
) {
1453 "megaraid: aborted cmd %lx[%x] complete.\n",
1454 scb
->cmd
->serial_number
, scb
->idx
);
1456 scb
->cmd
->result
= (DID_ABORT
<< 16);
1458 list_add_tail(SCSI_LIST(scb
->cmd
),
1459 &adapter
->completed_list
);
1461 mega_free_scb(adapter
, scb
);
1467 * Was a reset issued for this command
1469 if( scb
->state
& SCB_RESET
) {
1472 "megaraid: reset cmd %lx[%x] complete.\n",
1473 scb
->cmd
->serial_number
, scb
->idx
);
1475 scb
->cmd
->result
= (DID_RESET
<< 16);
1477 list_add_tail(SCSI_LIST(scb
->cmd
),
1478 &adapter
->completed_list
);
1480 mega_free_scb (adapter
, scb
);
1487 epthru
= scb
->epthru
;
1488 mbox
= (mbox_t
*)scb
->raw_mbox
;
1493 int logdrv
= mbox
->m_out
.logdrv
;
1495 islogical
= adapter
->logdrv_chan
[cmd
->channel
];
1497 * Maintain an error counter for the logical drive.
1498 * Some application like SNMP agent need such
1501 if( status
&& islogical
&& (cmd
->cmnd
[0] == READ_6
||
1502 cmd
->cmnd
[0] == READ_10
||
1503 cmd
->cmnd
[0] == READ_12
)) {
1505 * Logical drive number increases by 0x80 when
1506 * a logical drive is deleted
1508 adapter
->rd_errors
[logdrv
%0x80]++;
1511 if( status
&& islogical
&& (cmd
->cmnd
[0] == WRITE_6
||
1512 cmd
->cmnd
[0] == WRITE_10
||
1513 cmd
->cmnd
[0] == WRITE_12
)) {
1515 * Logical drive number increases by 0x80 when
1516 * a logical drive is deleted
1518 adapter
->wr_errors
[logdrv
%0x80]++;
1526 * Do not return the presence of hard disk on the channel so,
1527 * inquiry sent, and returned data==hard disk or removable
1528 * hard disk and not logical, request should return failure! -
1531 islogical
= adapter
->logdrv_chan
[cmd
->device
->channel
];
1532 if( cmd
->cmnd
[0] == INQUIRY
&& !islogical
) {
1535 sgl
= (struct scatterlist
*)
1536 cmd
->request_buffer
;
1539 c
= *(unsigned char *)
1540 page_address((&sgl
[0])->page
) +
1545 "megaraid: invalid sg.\n");
1550 c
= *(u8
*)cmd
->request_buffer
;
1553 if(IS_RAID_CH(adapter
, cmd
->device
->channel
) &&
1554 ((c
& 0x1F ) == TYPE_DISK
)) {
1559 /* clear result; otherwise, success returns corrupt value */
1562 /* Convert MegaRAID status to Linux error code */
1564 case 0x00: /* SUCCESS , i.e. SCSI_STATUS_GOOD */
1565 cmd
->result
|= (DID_OK
<< 16);
1568 case 0x02: /* ERROR_ABORTED, i.e.
1569 SCSI_STATUS_CHECK_CONDITION */
1571 /* set sense_buffer and result fields */
1572 if( mbox
->m_out
.cmd
== MEGA_MBOXCMD_PASSTHRU
||
1573 mbox
->m_out
.cmd
== MEGA_MBOXCMD_PASSTHRU64
) {
1575 memcpy(cmd
->sense_buffer
, pthru
->reqsensearea
,
1578 cmd
->result
= (DRIVER_SENSE
<< 24) |
1580 (CHECK_CONDITION
<< 1);
1583 if (mbox
->m_out
.cmd
== MEGA_MBOXCMD_EXTPTHRU
) {
1585 memcpy(cmd
->sense_buffer
,
1586 epthru
->reqsensearea
, 14);
1588 cmd
->result
= (DRIVER_SENSE
<< 24) |
1590 (CHECK_CONDITION
<< 1);
1592 cmd
->sense_buffer
[0] = 0x70;
1593 cmd
->sense_buffer
[2] = ABORTED_COMMAND
;
1594 cmd
->result
|= (CHECK_CONDITION
<< 1);
1599 case 0x08: /* ERR_DEST_DRIVE_FAILED, i.e.
1601 cmd
->result
|= (DID_BUS_BUSY
<< 16) | status
;
1605 #if MEGA_HAVE_CLUSTERING
1607 * If TEST_UNIT_READY fails, we know
1608 * MEGA_RESERVATION_STATUS failed
1610 if( cmd
->cmnd
[0] == TEST_UNIT_READY
) {
1611 cmd
->result
|= (DID_ERROR
<< 16) |
1612 (RESERVATION_CONFLICT
<< 1);
1616 * Error code returned is 1 if Reserve or Release
1617 * failed or the input parameter is invalid
1620 (cmd
->cmnd
[0] == RESERVE
||
1621 cmd
->cmnd
[0] == RELEASE
) ) {
1623 cmd
->result
|= (DID_ERROR
<< 16) |
1624 (RESERVATION_CONFLICT
<< 1);
1628 cmd
->result
|= (DID_BAD_TARGET
<< 16)|status
;
1632 * Only free SCBs for the commands coming down from the
1633 * mid-layer, not for which were issued internally
1635 * For internal command, restore the status returned by the
1636 * firmware so that user can interpret it.
1638 if( cmdid
== CMDID_INT_CMDS
) { /* internal command */
1639 cmd
->result
= status
;
1642 * Remove the internal command from the pending list
1644 list_del_init(&scb
->list
);
1645 scb
->state
= SCB_FREE
;
1648 mega_free_scb(adapter
, scb
);
1651 /* Add Scsi_Command to end of completed queue */
1652 list_add_tail(SCSI_LIST(cmd
), &adapter
->completed_list
);
1660 * Run through the list of completed requests and finish it
1663 mega_rundoneq (adapter_t
*adapter
)
1666 struct list_head
*pos
;
1668 list_for_each(pos
, &adapter
->completed_list
) {
1670 Scsi_Pointer
* spos
= (Scsi_Pointer
*)pos
;
1672 cmd
= list_entry(spos
, Scsi_Cmnd
, SCp
);
1673 cmd
->scsi_done(cmd
);
1676 INIT_LIST_HEAD(&adapter
->completed_list
);
1681 * Free a SCB structure
1682 * Note: We assume the scsi commands associated with this scb is not free yet.
1685 mega_free_scb(adapter_t
*adapter
, scb_t
*scb
)
1687 switch( scb
->dma_type
) {
1689 case MEGA_DMA_TYPE_NONE
:
1692 case MEGA_BULK_DATA
:
1693 pci_unmap_page(adapter
->dev
, scb
->dma_h_bulkdata
,
1694 scb
->cmd
->request_bufflen
, scb
->dma_direction
);
1698 pci_unmap_sg(adapter
->dev
, scb
->cmd
->request_buffer
,
1699 scb
->cmd
->use_sg
, scb
->dma_direction
);
1707 * Remove from the pending list
1709 list_del_init(&scb
->list
);
1711 /* Link the scb back into free list */
1712 scb
->state
= SCB_FREE
;
1715 list_add(&scb
->list
, &adapter
->free_list
);
1720 __mega_busywait_mbox (adapter_t
*adapter
)
1722 volatile mbox_t
*mbox
= adapter
->mbox
;
1725 for (counter
= 0; counter
< 10000; counter
++) {
1726 if (!mbox
->m_in
.busy
)
1728 udelay(100); yield();
1730 return -1; /* give up after 1 second */
1734 * Copies data to SGLIST
1735 * Note: For 64 bit cards, we need a minimum of one SG element for read/write
1738 mega_build_sglist(adapter_t
*adapter
, scb_t
*scb
, u32
*buf
, u32
*len
)
1740 struct scatterlist
*sgl
;
1742 unsigned long offset
;
1749 /* Scatter-gather not used */
1750 if( !cmd
->use_sg
) {
1752 page
= virt_to_page(cmd
->request_buffer
);
1753 offset
= offset_in_page(cmd
->request_buffer
);
1755 scb
->dma_h_bulkdata
= pci_map_page(adapter
->dev
,
1757 cmd
->request_bufflen
,
1758 scb
->dma_direction
);
1759 scb
->dma_type
= MEGA_BULK_DATA
;
1762 * We need to handle special 64-bit commands that need a
1765 if( adapter
->has_64bit_addr
) {
1766 scb
->sgl64
[0].address
= scb
->dma_h_bulkdata
;
1767 scb
->sgl64
[0].length
= cmd
->request_bufflen
;
1768 *buf
= (u32
)scb
->sgl_dma_addr
;
1769 *len
= (u32
)cmd
->request_bufflen
;
1773 *buf
= (u32
)scb
->dma_h_bulkdata
;
1774 *len
= (u32
)cmd
->request_bufflen
;
1779 sgl
= (struct scatterlist
*)cmd
->request_buffer
;
1782 * Copy Scatter-Gather list info into controller structure.
1784 * The number of sg elements returned must not exceed our limit
1786 sgcnt
= pci_map_sg(adapter
->dev
, sgl
, cmd
->use_sg
,
1787 scb
->dma_direction
);
1789 scb
->dma_type
= MEGA_SGLIST
;
1791 if( sgcnt
> adapter
->sglen
) BUG();
1793 for( idx
= 0; idx
< sgcnt
; idx
++, sgl
++ ) {
1795 if( adapter
->has_64bit_addr
) {
1796 scb
->sgl64
[idx
].address
= sg_dma_address(sgl
);
1797 scb
->sgl64
[idx
].length
= sg_dma_len(sgl
);
1800 scb
->sgl
[idx
].address
= sg_dma_address(sgl
);
1801 scb
->sgl
[idx
].length
= sg_dma_len(sgl
);
1805 /* Reset pointer and length fields */
1806 *buf
= scb
->sgl_dma_addr
;
1809 * For passthru command, dataxferlen must be set, even for commands
1812 *len
= (u32
)cmd
->request_bufflen
;
1814 /* Return count of SG requests */
1822 * takes all info in AdapterInquiry structure and puts it into ProductInfo and
1823 * Enquiry3 structures for later use
1826 mega_8_to_40ld(mraid_inquiry
*inquiry
, mega_inquiry3
*enquiry3
,
1827 mega_product_info
*product_info
)
1831 product_info
->max_commands
= inquiry
->adapter_info
.max_commands
;
1832 enquiry3
->rebuild_rate
= inquiry
->adapter_info
.rebuild_rate
;
1833 product_info
->nchannels
= inquiry
->adapter_info
.nchannels
;
1835 for (i
= 0; i
< 4; i
++) {
1836 product_info
->fw_version
[i
] =
1837 inquiry
->adapter_info
.fw_version
[i
];
1839 product_info
->bios_version
[i
] =
1840 inquiry
->adapter_info
.bios_version
[i
];
1842 enquiry3
->cache_flush_interval
=
1843 inquiry
->adapter_info
.cache_flush_interval
;
1845 product_info
->dram_size
= inquiry
->adapter_info
.dram_size
;
1847 enquiry3
->num_ldrv
= inquiry
->logdrv_info
.num_ldrv
;
1849 for (i
= 0; i
< MAX_LOGICAL_DRIVES_8LD
; i
++) {
1850 enquiry3
->ldrv_size
[i
] = inquiry
->logdrv_info
.ldrv_size
[i
];
1851 enquiry3
->ldrv_prop
[i
] = inquiry
->logdrv_info
.ldrv_prop
[i
];
1852 enquiry3
->ldrv_state
[i
] = inquiry
->logdrv_info
.ldrv_state
[i
];
1855 for (i
= 0; i
< (MAX_PHYSICAL_DRIVES
); i
++)
1856 enquiry3
->pdrv_state
[i
] = inquiry
->pdrv_info
.pdrv_state
[i
];
1860 mega_free_sgl(adapter_t
*adapter
)
1865 for(i
= 0; i
< adapter
->max_cmds
; i
++) {
1867 scb
= &adapter
->scb_list
[i
];
1870 pci_free_consistent(adapter
->dev
,
1871 sizeof(mega_sgl64
) * adapter
->sglen
,
1879 pci_free_consistent(adapter
->dev
, sizeof(mega_passthru
),
1880 scb
->pthru
, scb
->pthru_dma_addr
);
1886 pci_free_consistent(adapter
->dev
,
1887 sizeof(mega_ext_passthru
),
1888 scb
->epthru
, scb
->epthru_dma_addr
);
1898 * Get information about the card/driver
1901 megaraid_info(struct Scsi_Host
*host
)
1903 static char buffer
[512];
1906 adapter
= (adapter_t
*)host
->hostdata
;
1909 "LSI Logic MegaRAID %s %d commands %d targs %d chans %d luns",
1910 adapter
->fw_version
, adapter
->product_info
.max_commands
,
1911 adapter
->host
->max_id
, adapter
->host
->max_channel
,
1912 adapter
->host
->max_lun
);
1917 * Abort a previous SCSI request. Only commands on the pending list can be
1918 * aborted. All the commands issued to the F/W must complete.
1921 megaraid_abort(Scsi_Cmnd
*cmd
)
1926 adapter
= (adapter_t
*)cmd
->device
->host
->hostdata
;
1928 rval
= megaraid_abort_and_reset(adapter
, cmd
, SCB_ABORT
);
1931 * This is required here to complete any completed requests
1932 * to be communicated over to the mid layer.
1934 mega_rundoneq(adapter
);
1941 __megaraid_reset(Scsi_Cmnd
*cmd
)
1947 adapter
= (adapter_t
*)cmd
->device
->host
->hostdata
;
1949 #if MEGA_HAVE_CLUSTERING
1950 mc
.cmd
= MEGA_CLUSTER_CMD
;
1951 mc
.opcode
= MEGA_RESET_RESERVATIONS
;
1953 spin_unlock_irq(&adapter
->lock
);
1954 if( mega_internal_command(adapter
, LOCK_INT
, &mc
, NULL
) != 0 ) {
1956 "megaraid: reservation reset failed.\n");
1959 printk(KERN_INFO
"megaraid: reservation reset.\n");
1961 spin_lock_irq(&adapter
->lock
);
1964 rval
= megaraid_abort_and_reset(adapter
, cmd
, SCB_RESET
);
1967 * This is required here to complete any completed requests
1968 * to be communicated over to the mid layer.
1970 mega_rundoneq(adapter
);
1976 megaraid_reset(Scsi_Cmnd
*cmd
)
1978 adapter_t
*adapter
= (adapter_t
*)cmd
->device
->host
->hostdata
;
1981 spin_lock_irq(&adapter
->lock
);
1982 rc
= __megaraid_reset(cmd
);
1983 spin_unlock_irq(&adapter
->lock
);
1990 * megaraid_abort_and_reset()
1991 * @adapter - megaraid soft state
1992 * @cmd - scsi command to be aborted or reset
1993 * @aor - abort or reset flag
1995 * Try to locate the scsi command in the pending queue. If found and is not
1996 * issued to the controller, abort/reset it. Otherwise return failure
1999 megaraid_abort_and_reset(adapter_t
*adapter
, Scsi_Cmnd
*cmd
, int aor
)
2001 struct list_head
*pos
, *next
;
2004 printk(KERN_WARNING
"megaraid: %s-%lx cmd=%x <c=%d t=%d l=%d>\n",
2005 (aor
== SCB_ABORT
)? "ABORTING":"RESET", cmd
->serial_number
,
2006 cmd
->cmnd
[0], cmd
->device
->channel
,
2007 cmd
->device
->id
, cmd
->device
->lun
);
2009 if(list_empty(&adapter
->pending_list
))
2012 list_for_each_safe(pos
, next
, &adapter
->pending_list
) {
2014 scb
= list_entry(pos
, scb_t
, list
);
2016 if (scb
->cmd
== cmd
) { /* Found command */
2021 * Check if this command has firmare owenership. If
2022 * yes, we cannot reset this command. Whenever, f/w
2023 * completes this command, we will return appropriate
2026 if( scb
->state
& SCB_ISSUED
) {
2029 "megaraid: %s-%lx[%x], fw owner.\n",
2030 (aor
==SCB_ABORT
) ? "ABORTING":"RESET",
2031 cmd
->serial_number
, scb
->idx
);
2038 * Not yet issued! Remove from the pending
2042 "megaraid: %s-%lx[%x], driver owner.\n",
2043 (aor
==SCB_ABORT
) ? "ABORTING":"RESET",
2044 cmd
->serial_number
, scb
->idx
);
2046 mega_free_scb(adapter
, scb
);
2048 if( aor
== SCB_ABORT
) {
2049 cmd
->result
= (DID_ABORT
<< 16);
2052 cmd
->result
= (DID_RESET
<< 16);
2055 list_add_tail(SCSI_LIST(cmd
),
2056 &adapter
->completed_list
);
2067 make_local_pdev(adapter_t
*adapter
, struct pci_dev
**pdev
)
2069 *pdev
= kmalloc(sizeof(struct pci_dev
), GFP_KERNEL
);
2071 if( *pdev
== NULL
) return -1;
2073 memcpy(*pdev
, adapter
->dev
, sizeof(struct pci_dev
));
2075 if( pci_set_dma_mask(*pdev
, 0xffffffff) != 0 ) {
2084 free_local_pdev(struct pci_dev
*pdev
)
2090 * mega_allocate_inquiry()
2091 * @dma_handle - handle returned for dma address
2092 * @pdev - handle to pci device
2094 * allocates memory for inquiry structure
2096 static inline void *
2097 mega_allocate_inquiry(dma_addr_t
*dma_handle
, struct pci_dev
*pdev
)
2099 return pci_alloc_consistent(pdev
, sizeof(mega_inquiry3
), dma_handle
);
2104 mega_free_inquiry(void *inquiry
, dma_addr_t dma_handle
, struct pci_dev
*pdev
)
2106 pci_free_consistent(pdev
, sizeof(mega_inquiry3
), inquiry
, dma_handle
);
2110 #ifdef CONFIG_PROC_FS
2111 /* Following code handles /proc fs */
2113 #define CREATE_READ_PROC(string, func) create_proc_read_entry(string, \
2114 S_IRUSR | S_IFREG, \
2115 controller_proc_dir_entry, \
2119 * mega_create_proc_entry()
2120 * @index - index in soft state array
2121 * @parent - parent node for this /proc entry
2123 * Creates /proc entries for our controllers.
2126 mega_create_proc_entry(int index
, struct proc_dir_entry
*parent
)
2128 struct proc_dir_entry
*controller_proc_dir_entry
= NULL
;
2129 u8 string
[64] = { 0 };
2130 adapter_t
*adapter
= hba_soft_state
[index
];
2132 sprintf(string
, "hba%d", adapter
->host
->host_no
);
2134 controller_proc_dir_entry
=
2135 adapter
->controller_proc_dir_entry
= proc_mkdir(string
, parent
);
2137 if(!controller_proc_dir_entry
) {
2138 printk(KERN_WARNING
"\nmegaraid: proc_mkdir failed\n");
2141 adapter
->proc_read
= CREATE_READ_PROC("config", proc_read_config
);
2142 adapter
->proc_stat
= CREATE_READ_PROC("stat", proc_read_stat
);
2143 adapter
->proc_mbox
= CREATE_READ_PROC("mailbox", proc_read_mbox
);
2144 #if MEGA_HAVE_ENH_PROC
2145 adapter
->proc_rr
= CREATE_READ_PROC("rebuild-rate", proc_rebuild_rate
);
2146 adapter
->proc_battery
= CREATE_READ_PROC("battery-status",
2150 * Display each physical drive on its channel
2152 adapter
->proc_pdrvstat
[0] = CREATE_READ_PROC("diskdrives-ch0",
2154 adapter
->proc_pdrvstat
[1] = CREATE_READ_PROC("diskdrives-ch1",
2156 adapter
->proc_pdrvstat
[2] = CREATE_READ_PROC("diskdrives-ch2",
2158 adapter
->proc_pdrvstat
[3] = CREATE_READ_PROC("diskdrives-ch3",
2162 * Display a set of up to 10 logical drive through each of following
2165 adapter
->proc_rdrvstat
[0] = CREATE_READ_PROC("raiddrives-0-9",
2167 adapter
->proc_rdrvstat
[1] = CREATE_READ_PROC("raiddrives-10-19",
2169 adapter
->proc_rdrvstat
[2] = CREATE_READ_PROC("raiddrives-20-29",
2171 adapter
->proc_rdrvstat
[3] = CREATE_READ_PROC("raiddrives-30-39",
2178 * proc_read_config()
2179 * @page - buffer to write the data in
2180 * @start - where the actual data has been written in page
2181 * @offset - same meaning as the read system call
2182 * @count - same meaning as the read system call
2183 * @eof - set if no more data needs to be returned
2184 * @data - pointer to our soft state
2186 * Display configuration information about the controller.
2189 proc_read_config(char *page
, char **start
, off_t offset
, int count
, int *eof
,
2193 adapter_t
*adapter
= (adapter_t
*)data
;
2196 len
+= sprintf(page
+len
, "%s", MEGARAID_VERSION
);
2198 if(adapter
->product_info
.product_name
[0])
2199 len
+= sprintf(page
+len
, "%s\n",
2200 adapter
->product_info
.product_name
);
2202 len
+= sprintf(page
+len
, "Controller Type: ");
2204 if( adapter
->flag
& BOARD_MEMMAP
) {
2205 len
+= sprintf(page
+len
,
2206 "438/466/467/471/493/518/520/531/532\n");
2209 len
+= sprintf(page
+len
,
2213 if(adapter
->flag
& BOARD_40LD
) {
2214 len
+= sprintf(page
+len
,
2215 "Controller Supports 40 Logical Drives\n");
2218 if(adapter
->flag
& BOARD_64BIT
) {
2219 len
+= sprintf(page
+len
,
2220 "Controller capable of 64-bit memory addressing\n");
2222 if( adapter
->has_64bit_addr
) {
2223 len
+= sprintf(page
+len
,
2224 "Controller using 64-bit memory addressing\n");
2227 len
+= sprintf(page
+len
,
2228 "Controller is not using 64-bit memory addressing\n");
2231 len
+= sprintf(page
+len
, "Base = %08lx, Irq = %d, ", adapter
->base
,
2232 adapter
->host
->irq
);
2234 len
+= sprintf(page
+len
, "Logical Drives = %d, Channels = %d\n",
2235 adapter
->numldrv
, adapter
->product_info
.nchannels
);
2237 len
+= sprintf(page
+len
, "Version =%s:%s, DRAM = %dMb\n",
2238 adapter
->fw_version
, adapter
->bios_version
,
2239 adapter
->product_info
.dram_size
);
2241 len
+= sprintf(page
+len
,
2242 "Controller Queue Depth = %d, Driver Queue Depth = %d\n",
2243 adapter
->product_info
.max_commands
, adapter
->max_cmds
);
2245 len
+= sprintf(page
+len
, "support_ext_cdb = %d\n",
2246 adapter
->support_ext_cdb
);
2247 len
+= sprintf(page
+len
, "support_random_del = %d\n",
2248 adapter
->support_random_del
);
2249 len
+= sprintf(page
+len
, "boot_ldrv_enabled = %d\n",
2250 adapter
->boot_ldrv_enabled
);
2251 len
+= sprintf(page
+len
, "boot_ldrv = %d\n",
2252 adapter
->boot_ldrv
);
2253 len
+= sprintf(page
+len
, "boot_pdrv_enabled = %d\n",
2254 adapter
->boot_pdrv_enabled
);
2255 len
+= sprintf(page
+len
, "boot_pdrv_ch = %d\n",
2256 adapter
->boot_pdrv_ch
);
2257 len
+= sprintf(page
+len
, "boot_pdrv_tgt = %d\n",
2258 adapter
->boot_pdrv_tgt
);
2259 len
+= sprintf(page
+len
, "quiescent = %d\n",
2260 atomic_read(&adapter
->quiescent
));
2261 len
+= sprintf(page
+len
, "has_cluster = %d\n",
2262 adapter
->has_cluster
);
2264 len
+= sprintf(page
+len
, "\nModule Parameters:\n");
2265 len
+= sprintf(page
+len
, "max_cmd_per_lun = %d\n",
2267 len
+= sprintf(page
+len
, "max_sectors_per_io = %d\n",
2268 max_sectors_per_io
);
2279 * @page - buffer to write the data in
2280 * @start - where the actual data has been written in page
2281 * @offset - same meaning as the read system call
2282 * @count - same meaning as the read system call
2283 * @eof - set if no more data needs to be returned
2284 * @data - pointer to our soft state
2286 * Diaplay statistical information about the I/O activity.
2289 proc_read_stat(char *page
, char **start
, off_t offset
, int count
, int *eof
,
2296 i
= 0; /* avoid compilation warnings */
2298 adapter
= (adapter_t
*)data
;
2300 len
= sprintf(page
, "Statistical Information for this controller\n");
2301 len
+= sprintf(page
+len
, "pend_cmds = %d\n",
2302 atomic_read(&adapter
->pend_cmds
));
2304 for(i
= 0; i
< adapter
->numldrv
; i
++) {
2305 len
+= sprintf(page
+len
, "Logical Drive %d:\n", i
);
2307 len
+= sprintf(page
+len
,
2308 "\tReads Issued = %lu, Writes Issued = %lu\n",
2309 adapter
->nreads
[i
], adapter
->nwrites
[i
]);
2311 len
+= sprintf(page
+len
,
2312 "\tSectors Read = %lu, Sectors Written = %lu\n",
2313 adapter
->nreadblocks
[i
], adapter
->nwriteblocks
[i
]);
2315 len
+= sprintf(page
+len
,
2316 "\tRead errors = %lu, Write errors = %lu\n\n",
2317 adapter
->rd_errors
[i
], adapter
->wr_errors
[i
]);
2320 len
+= sprintf(page
+len
,
2321 "IO and error counters not compiled in driver.\n");
2332 * @page - buffer to write the data in
2333 * @start - where the actual data has been written in page
2334 * @offset - same meaning as the read system call
2335 * @count - same meaning as the read system call
2336 * @eof - set if no more data needs to be returned
2337 * @data - pointer to our soft state
2339 * Display mailbox information for the last command issued. This information
2340 * is good for debugging.
2343 proc_read_mbox(char *page
, char **start
, off_t offset
, int count
, int *eof
,
2347 adapter_t
*adapter
= (adapter_t
*)data
;
2348 volatile mbox_t
*mbox
= adapter
->mbox
;
2351 len
= sprintf(page
, "Contents of Mail Box Structure\n");
2352 len
+= sprintf(page
+len
, " Fw Command = 0x%02x\n",
2354 len
+= sprintf(page
+len
, " Cmd Sequence = 0x%02x\n",
2356 len
+= sprintf(page
+len
, " No of Sectors= %04d\n",
2357 mbox
->m_out
.numsectors
);
2358 len
+= sprintf(page
+len
, " LBA = 0x%02x\n",
2360 len
+= sprintf(page
+len
, " DTA = 0x%08x\n",
2361 mbox
->m_out
.xferaddr
);
2362 len
+= sprintf(page
+len
, " Logical Drive= 0x%02x\n",
2363 mbox
->m_out
.logdrv
);
2364 len
+= sprintf(page
+len
, " No of SG Elmt= 0x%02x\n",
2365 mbox
->m_out
.numsgelements
);
2366 len
+= sprintf(page
+len
, " Busy = %01x\n",
2368 len
+= sprintf(page
+len
, " Status = 0x%02x\n",
2378 * proc_rebuild_rate()
2379 * @page - buffer to write the data in
2380 * @start - where the actual data has been written in page
2381 * @offset - same meaning as the read system call
2382 * @count - same meaning as the read system call
2383 * @eof - set if no more data needs to be returned
2384 * @data - pointer to our soft state
2386 * Display current rebuild rate
2389 proc_rebuild_rate(char *page
, char **start
, off_t offset
, int count
, int *eof
,
2392 adapter_t
*adapter
= (adapter_t
*)data
;
2393 dma_addr_t dma_handle
;
2395 struct pci_dev
*pdev
;
2398 if( make_local_pdev(adapter
, &pdev
) != 0 ) {
2403 if( (inquiry
= mega_allocate_inquiry(&dma_handle
, pdev
)) == NULL
) {
2404 free_local_pdev(pdev
);
2409 if( mega_adapinq(adapter
, dma_handle
) != 0 ) {
2411 len
= sprintf(page
, "Adapter inquiry failed.\n");
2413 printk(KERN_WARNING
"megaraid: inquiry failed.\n");
2415 mega_free_inquiry(inquiry
, dma_handle
, pdev
);
2417 free_local_pdev(pdev
);
2424 if( adapter
->flag
& BOARD_40LD
) {
2425 len
= sprintf(page
, "Rebuild Rate: [%d%%]\n",
2426 ((mega_inquiry3
*)inquiry
)->rebuild_rate
);
2429 len
= sprintf(page
, "Rebuild Rate: [%d%%]\n",
2430 ((mraid_ext_inquiry
*)
2431 inquiry
)->raid_inq
.adapter_info
.rebuild_rate
);
2435 mega_free_inquiry(inquiry
, dma_handle
, pdev
);
2437 free_local_pdev(pdev
);
2447 * @page - buffer to write the data in
2448 * @start - where the actual data has been written in page
2449 * @offset - same meaning as the read system call
2450 * @count - same meaning as the read system call
2451 * @eof - set if no more data needs to be returned
2452 * @data - pointer to our soft state
2454 * Display information about the battery module on the controller.
2457 proc_battery(char *page
, char **start
, off_t offset
, int count
, int *eof
,
2460 adapter_t
*adapter
= (adapter_t
*)data
;
2461 dma_addr_t dma_handle
;
2463 struct pci_dev
*pdev
;
2464 u8 battery_status
= 0;
2468 if( make_local_pdev(adapter
, &pdev
) != 0 ) {
2473 if( (inquiry
= mega_allocate_inquiry(&dma_handle
, pdev
)) == NULL
) {
2474 free_local_pdev(pdev
);
2479 if( mega_adapinq(adapter
, dma_handle
) != 0 ) {
2481 len
= sprintf(page
, "Adapter inquiry failed.\n");
2483 printk(KERN_WARNING
"megaraid: inquiry failed.\n");
2485 mega_free_inquiry(inquiry
, dma_handle
, pdev
);
2487 free_local_pdev(pdev
);
2494 if( adapter
->flag
& BOARD_40LD
) {
2495 battery_status
= ((mega_inquiry3
*)inquiry
)->battery_status
;
2498 battery_status
= ((mraid_ext_inquiry
*)inquiry
)->
2499 raid_inq
.adapter_info
.battery_status
;
2503 * Decode the battery status
2505 sprintf(str
, "Battery Status:[%d]", battery_status
);
2507 if(battery_status
== MEGA_BATT_CHARGE_DONE
)
2508 strcat(str
, " Charge Done");
2510 if(battery_status
& MEGA_BATT_MODULE_MISSING
)
2511 strcat(str
, " Module Missing");
2513 if(battery_status
& MEGA_BATT_LOW_VOLTAGE
)
2514 strcat(str
, " Low Voltage");
2516 if(battery_status
& MEGA_BATT_TEMP_HIGH
)
2517 strcat(str
, " Temperature High");
2519 if(battery_status
& MEGA_BATT_PACK_MISSING
)
2520 strcat(str
, " Pack Missing");
2522 if(battery_status
& MEGA_BATT_CHARGE_INPROG
)
2523 strcat(str
, " Charge In-progress");
2525 if(battery_status
& MEGA_BATT_CHARGE_FAIL
)
2526 strcat(str
, " Charge Fail");
2528 if(battery_status
& MEGA_BATT_CYCLES_EXCEEDED
)
2529 strcat(str
, " Cycles Exceeded");
2531 len
= sprintf(page
, "%s\n", str
);
2534 mega_free_inquiry(inquiry
, dma_handle
, pdev
);
2536 free_local_pdev(pdev
);
2546 * @page - buffer to write the data in
2547 * @start - where the actual data has been written in page
2548 * @offset - same meaning as the read system call
2549 * @count - same meaning as the read system call
2550 * @eof - set if no more data needs to be returned
2551 * @data - pointer to our soft state
2553 * Display information about the physical drives on physical channel 0.
2556 proc_pdrv_ch0(char *page
, char **start
, off_t offset
, int count
, int *eof
,
2559 adapter_t
*adapter
= (adapter_t
*)data
;
2563 return (proc_pdrv(adapter
, page
, 0));
2569 * @page - buffer to write the data in
2570 * @start - where the actual data has been written in page
2571 * @offset - same meaning as the read system call
2572 * @count - same meaning as the read system call
2573 * @eof - set if no more data needs to be returned
2574 * @data - pointer to our soft state
2576 * Display information about the physical drives on physical channel 1.
2579 proc_pdrv_ch1(char *page
, char **start
, off_t offset
, int count
, int *eof
,
2582 adapter_t
*adapter
= (adapter_t
*)data
;
2586 return (proc_pdrv(adapter
, page
, 1));
2592 * @page - buffer to write the data in
2593 * @start - where the actual data has been written in page
2594 * @offset - same meaning as the read system call
2595 * @count - same meaning as the read system call
2596 * @eof - set if no more data needs to be returned
2597 * @data - pointer to our soft state
2599 * Display information about the physical drives on physical channel 2.
2602 proc_pdrv_ch2(char *page
, char **start
, off_t offset
, int count
, int *eof
,
2605 adapter_t
*adapter
= (adapter_t
*)data
;
2609 return (proc_pdrv(adapter
, page
, 2));
2615 * @page - buffer to write the data in
2616 * @start - where the actual data has been written in page
2617 * @offset - same meaning as the read system call
2618 * @count - same meaning as the read system call
2619 * @eof - set if no more data needs to be returned
2620 * @data - pointer to our soft state
2622 * Display information about the physical drives on physical channel 3.
2625 proc_pdrv_ch3(char *page
, char **start
, off_t offset
, int count
, int *eof
,
2628 adapter_t
*adapter
= (adapter_t
*)data
;
2632 return (proc_pdrv(adapter
, page
, 3));
2638 * @page - buffer to write the data in
2639 * @adapter - pointer to our soft state
2641 * Display information about the physical drives.
2644 proc_pdrv(adapter_t
*adapter
, char *page
, int channel
)
2646 dma_addr_t dma_handle
;
2648 dma_addr_t scsi_inq_dma_handle
;
2650 struct pci_dev
*pdev
;
2659 if( make_local_pdev(adapter
, &pdev
) != 0 ) {
2663 if( (inquiry
= mega_allocate_inquiry(&dma_handle
, pdev
)) == NULL
) {
2667 if( mega_adapinq(adapter
, dma_handle
) != 0 ) {
2668 len
= sprintf(page
, "Adapter inquiry failed.\n");
2670 printk(KERN_WARNING
"megaraid: inquiry failed.\n");
2676 scsi_inq
= pci_alloc_consistent(pdev
, 256, &scsi_inq_dma_handle
);
2678 if( scsi_inq
== NULL
) {
2679 len
= sprintf(page
, "memory not available for scsi inq.\n");
2684 if( adapter
->flag
& BOARD_40LD
) {
2685 pdrv_state
= ((mega_inquiry3
*)inquiry
)->pdrv_state
;
2688 pdrv_state
= ((mraid_ext_inquiry
*)inquiry
)->
2689 raid_inq
.pdrv_info
.pdrv_state
;
2692 max_channels
= adapter
->product_info
.nchannels
;
2694 if( channel
>= max_channels
) {
2698 for( tgt
= 0; tgt
<= MAX_TARGET
; tgt
++ ) {
2700 i
= channel
*16 + tgt
;
2702 state
= *(pdrv_state
+ i
);
2704 switch( state
& 0x0F ) {
2708 "Channel:%2d Id:%2d State: Online",
2714 "Channel:%2d Id:%2d State: Failed",
2720 "Channel:%2d Id:%2d State: Rebuild",
2726 "Channel:%2d Id:%2d State: Hot spare",
2732 "Channel:%2d Id:%2d State: Un-configured",
2739 * This interface displays inquiries for disk drives
2740 * only. Inquries for logical drives and non-disk
2741 * devices are available through /proc/scsi/scsi
2743 memset(scsi_inq
, 0, 256);
2744 if( mega_internal_dev_inquiry(adapter
, channel
, tgt
,
2745 scsi_inq_dma_handle
) ||
2746 (scsi_inq
[0] & 0x1F) != TYPE_DISK
) {
2751 * Check for overflow. We print less than 240
2752 * characters for inquiry
2754 if( (len
+ 240) >= PAGE_SIZE
) break;
2756 len
+= sprintf(page
+len
, "%s.\n", str
);
2758 len
+= mega_print_inquiry(page
+len
, scsi_inq
);
2762 pci_free_consistent(pdev
, 256, scsi_inq
, scsi_inq_dma_handle
);
2764 mega_free_inquiry(inquiry
, dma_handle
, pdev
);
2766 free_local_pdev(pdev
);
2773 * Display scsi inquiry
2776 mega_print_inquiry(char *page
, char *scsi_inq
)
2781 len
= sprintf(page
, " Vendor: ");
2782 for( i
= 8; i
< 16; i
++ ) {
2783 len
+= sprintf(page
+len
, "%c", scsi_inq
[i
]);
2786 len
+= sprintf(page
+len
, " Model: ");
2788 for( i
= 16; i
< 32; i
++ ) {
2789 len
+= sprintf(page
+len
, "%c", scsi_inq
[i
]);
2792 len
+= sprintf(page
+len
, " Rev: ");
2794 for( i
= 32; i
< 36; i
++ ) {
2795 len
+= sprintf(page
+len
, "%c", scsi_inq
[i
]);
2798 len
+= sprintf(page
+len
, "\n");
2800 i
= scsi_inq
[0] & 0x1f;
2802 len
+= sprintf(page
+len
, " Type: %s ",
2803 i
< MAX_SCSI_DEVICE_CODE
? scsi_device_types
[i
] :
2806 len
+= sprintf(page
+len
,
2807 " ANSI SCSI revision: %02x", scsi_inq
[2] & 0x07);
2809 if( (scsi_inq
[2] & 0x07) == 1 && (scsi_inq
[3] & 0x0f) == 1 )
2810 len
+= sprintf(page
+len
, " CCS\n");
2812 len
+= sprintf(page
+len
, "\n");
2820 * @page - buffer to write the data in
2821 * @start - where the actual data has been written in page
2822 * @offset - same meaning as the read system call
2823 * @count - same meaning as the read system call
2824 * @eof - set if no more data needs to be returned
2825 * @data - pointer to our soft state
2827 * Display real time information about the logical drives 0 through 9.
2830 proc_rdrv_10(char *page
, char **start
, off_t offset
, int count
, int *eof
,
2833 adapter_t
*adapter
= (adapter_t
*)data
;
2837 return (proc_rdrv(adapter
, page
, 0, 9));
2843 * @page - buffer to write the data in
2844 * @start - where the actual data has been written in page
2845 * @offset - same meaning as the read system call
2846 * @count - same meaning as the read system call
2847 * @eof - set if no more data needs to be returned
2848 * @data - pointer to our soft state
2850 * Display real time information about the logical drives 0 through 9.
2853 proc_rdrv_20(char *page
, char **start
, off_t offset
, int count
, int *eof
,
2856 adapter_t
*adapter
= (adapter_t
*)data
;
2860 return (proc_rdrv(adapter
, page
, 10, 19));
2866 * @page - buffer to write the data in
2867 * @start - where the actual data has been written in page
2868 * @offset - same meaning as the read system call
2869 * @count - same meaning as the read system call
2870 * @eof - set if no more data needs to be returned
2871 * @data - pointer to our soft state
2873 * Display real time information about the logical drives 0 through 9.
2876 proc_rdrv_30(char *page
, char **start
, off_t offset
, int count
, int *eof
,
2879 adapter_t
*adapter
= (adapter_t
*)data
;
2883 return (proc_rdrv(adapter
, page
, 20, 29));
2889 * @page - buffer to write the data in
2890 * @start - where the actual data has been written in page
2891 * @offset - same meaning as the read system call
2892 * @count - same meaning as the read system call
2893 * @eof - set if no more data needs to be returned
2894 * @data - pointer to our soft state
2896 * Display real time information about the logical drives 0 through 9.
2899 proc_rdrv_40(char *page
, char **start
, off_t offset
, int count
, int *eof
,
2902 adapter_t
*adapter
= (adapter_t
*)data
;
2906 return (proc_rdrv(adapter
, page
, 30, 39));
2912 * @page - buffer to write the data in
2913 * @adapter - pointer to our soft state
2914 * @start - starting logical drive to display
2915 * @end - ending logical drive to display
2917 * We do not print the inquiry information since its already available through
2918 * /proc/scsi/scsi interface
2921 proc_rdrv(adapter_t
*adapter
, char *page
, int start
, int end
)
2923 dma_addr_t dma_handle
;
2924 logdrv_param
*lparam
;
2927 dma_addr_t disk_array_dma_handle
;
2929 struct pci_dev
*pdev
;
2936 if( make_local_pdev(adapter
, &pdev
) != 0 ) {
2940 if( (inquiry
= mega_allocate_inquiry(&dma_handle
, pdev
)) == NULL
) {
2941 free_local_pdev(pdev
);
2945 if( mega_adapinq(adapter
, dma_handle
) != 0 ) {
2947 len
= sprintf(page
, "Adapter inquiry failed.\n");
2949 printk(KERN_WARNING
"megaraid: inquiry failed.\n");
2951 mega_free_inquiry(inquiry
, dma_handle
, pdev
);
2953 free_local_pdev(pdev
);
2958 memset(&mc
, 0, sizeof(megacmd_t
));
2960 if( adapter
->flag
& BOARD_40LD
) {
2961 array_sz
= sizeof(disk_array_40ld
);
2963 rdrv_state
= ((mega_inquiry3
*)inquiry
)->ldrv_state
;
2965 num_ldrv
= ((mega_inquiry3
*)inquiry
)->num_ldrv
;
2968 array_sz
= sizeof(disk_array_8ld
);
2970 rdrv_state
= ((mraid_ext_inquiry
*)inquiry
)->
2971 raid_inq
.logdrv_info
.ldrv_state
;
2973 num_ldrv
= ((mraid_ext_inquiry
*)inquiry
)->
2974 raid_inq
.logdrv_info
.num_ldrv
;
2977 disk_array
= pci_alloc_consistent(pdev
, array_sz
,
2978 &disk_array_dma_handle
);
2980 if( disk_array
== NULL
) {
2981 len
= sprintf(page
, "memory not available.\n");
2983 mega_free_inquiry(inquiry
, dma_handle
, pdev
);
2985 free_local_pdev(pdev
);
2990 mc
.xferaddr
= (u32
)disk_array_dma_handle
;
2992 if( adapter
->flag
& BOARD_40LD
) {
2993 mc
.cmd
= FC_NEW_CONFIG
;
2994 mc
.opcode
= OP_DCMD_READ_CONFIG
;
2996 if( mega_internal_command(adapter
, LOCK_INT
, &mc
, NULL
) ) {
2998 len
= sprintf(page
, "40LD read config failed.\n");
3000 mega_free_inquiry(inquiry
, dma_handle
, pdev
);
3002 pci_free_consistent(pdev
, array_sz
, disk_array
,
3003 disk_array_dma_handle
);
3005 free_local_pdev(pdev
);
3012 mc
.cmd
= NEW_READ_CONFIG_8LD
;
3014 if( mega_internal_command(adapter
, LOCK_INT
, &mc
, NULL
) ) {
3016 mc
.cmd
= READ_CONFIG_8LD
;
3018 if( mega_internal_command(adapter
, LOCK_INT
, &mc
,
3022 "8LD read config failed.\n");
3024 mega_free_inquiry(inquiry
, dma_handle
, pdev
);
3026 pci_free_consistent(pdev
, array_sz
,
3028 disk_array_dma_handle
);
3030 free_local_pdev(pdev
);
3037 for( i
= start
; i
< ( (end
+1 < num_ldrv
) ? end
+1 : num_ldrv
); i
++ ) {
3039 if( adapter
->flag
& BOARD_40LD
) {
3041 &((disk_array_40ld
*)disk_array
)->ldrv
[i
].lparam
;
3045 &((disk_array_8ld
*)disk_array
)->ldrv
[i
].lparam
;
3049 * Check for overflow. We print less than 240 characters for
3050 * information about each logical drive.
3052 if( (len
+ 240) >= PAGE_SIZE
) break;
3054 len
+= sprintf(page
+len
, "Logical drive:%2d:, ", i
);
3056 switch( rdrv_state
[i
] & 0x0F ) {
3058 len
+= sprintf(page
+len
, "state: offline");
3062 len
+= sprintf(page
+len
, "state: degraded");
3066 len
+= sprintf(page
+len
, "state: optimal");
3070 len
+= sprintf(page
+len
, "state: deleted");
3074 len
+= sprintf(page
+len
, "state: unknown");
3079 * Check if check consistency or initialization is going on
3080 * for this logical drive.
3082 if( (rdrv_state
[i
] & 0xF0) == 0x20 ) {
3083 len
+= sprintf(page
+len
,
3084 ", check-consistency in progress");
3086 else if( (rdrv_state
[i
] & 0xF0) == 0x10 ) {
3087 len
+= sprintf(page
+len
,
3088 ", initialization in progress");
3091 len
+= sprintf(page
+len
, "\n");
3093 len
+= sprintf(page
+len
, "Span depth:%3d, ",
3094 lparam
->span_depth
);
3096 len
+= sprintf(page
+len
, "RAID level:%3d, ",
3099 len
+= sprintf(page
+len
, "Stripe size:%3d, ",
3100 lparam
->stripe_sz
? lparam
->stripe_sz
/2: 128);
3102 len
+= sprintf(page
+len
, "Row size:%3d\n",
3106 len
+= sprintf(page
+len
, "Read Policy: ");
3108 switch(lparam
->read_ahead
) {
3111 len
+= sprintf(page
+len
, "No read ahead, ");
3115 len
+= sprintf(page
+len
, "Read ahead, ");
3118 case ADAP_READ_AHEAD
:
3119 len
+= sprintf(page
+len
, "Adaptive, ");
3124 len
+= sprintf(page
+len
, "Write Policy: ");
3126 switch(lparam
->write_mode
) {
3128 case WRMODE_WRITE_THRU
:
3129 len
+= sprintf(page
+len
, "Write thru, ");
3132 case WRMODE_WRITE_BACK
:
3133 len
+= sprintf(page
+len
, "Write back, ");
3137 len
+= sprintf(page
+len
, "Cache Policy: ");
3139 switch(lparam
->direct_io
) {
3142 len
+= sprintf(page
+len
, "Cached IO\n\n");
3146 len
+= sprintf(page
+len
, "Direct IO\n\n");
3151 mega_free_inquiry(inquiry
, dma_handle
, pdev
);
3153 pci_free_consistent(pdev
, array_sz
, disk_array
,
3154 disk_array_dma_handle
);
3156 free_local_pdev(pdev
);
3165 * megaraid_biosparam()
3167 * Return the disk geometry for a particular disk
3170 megaraid_biosparam(struct scsi_device
*sdev
, struct block_device
*bdev
,
3171 sector_t capacity
, int geom
[])
3180 /* Get pointer to host config structure */
3181 adapter
= (adapter_t
*)sdev
->host
->hostdata
;
3183 if (IS_RAID_CH(adapter
, sdev
->channel
)) {
3184 /* Default heads (64) & sectors (32) */
3187 cylinders
= (ulong
)capacity
/ (heads
* sectors
);
3190 * Handle extended translation size for logical drives
3193 if ((ulong
)capacity
>= 0x200000) {
3196 cylinders
= (ulong
)capacity
/ (heads
* sectors
);
3202 geom
[2] = cylinders
;
3205 bh
= scsi_bios_ptable(bdev
);
3208 rval
= scsi_partsize(bh
, capacity
,
3209 &geom
[2], &geom
[0], &geom
[1]);
3216 "megaraid: invalid partition on this disk on channel %d\n",
3219 /* Default heads (64) & sectors (32) */
3222 cylinders
= (ulong
)capacity
/ (heads
* sectors
);
3224 /* Handle extended translation size for logical drives > 1Gb */
3225 if ((ulong
)capacity
>= 0x200000) {
3228 cylinders
= (ulong
)capacity
/ (heads
* sectors
);
3234 geom
[2] = cylinders
;
3242 * @adapter - pointer to our soft state
3244 * Allocate memory for the various pointers in the scb structures:
3245 * scatter-gather list pointer, passthru and extended passthru structure
3249 mega_init_scb(adapter_t
*adapter
)
3254 for( i
= 0; i
< adapter
->max_cmds
; i
++ ) {
3256 scb
= &adapter
->scb_list
[i
];
3264 for( i
= 0; i
< adapter
->max_cmds
; i
++ ) {
3266 scb
= &adapter
->scb_list
[i
];
3270 scb
->sgl64
= pci_alloc_consistent(adapter
->dev
,
3271 sizeof(mega_sgl64
) * adapter
->sglen
,
3272 &scb
->sgl_dma_addr
);
3274 scb
->sgl
= (mega_sglist
*)scb
->sgl64
;
3277 printk(KERN_WARNING
"RAID: Can't allocate sglist.\n");
3278 mega_free_sgl(adapter
);
3282 scb
->pthru
= pci_alloc_consistent(adapter
->dev
,
3283 sizeof(mega_passthru
),
3284 &scb
->pthru_dma_addr
);
3287 printk(KERN_WARNING
"RAID: Can't allocate passthru.\n");
3288 mega_free_sgl(adapter
);
3292 scb
->epthru
= pci_alloc_consistent(adapter
->dev
,
3293 sizeof(mega_ext_passthru
),
3294 &scb
->epthru_dma_addr
);
3296 if( !scb
->epthru
) {
3298 "Can't allocate extended passthru.\n");
3299 mega_free_sgl(adapter
);
3304 scb
->dma_type
= MEGA_DMA_TYPE_NONE
;
3308 * lock not required since we are loading the driver, so no
3309 * commands possible right now.
3311 scb
->state
= SCB_FREE
;
3313 list_add(&scb
->list
, &adapter
->free_list
);
3325 * Routines for the character/ioctl interface to the driver. Find out if this
3326 * is a valid open. If yes, increment the module use count so that it cannot
3330 megadev_open (struct inode
*inode
, struct file
*filep
)
3333 * Only allow superuser to access private ioctl interface
3335 if( !capable(CAP_SYS_ADMIN
) ) return -EACCES
;
3343 * @inode - Our device inode
3345 * @cmd - ioctl command
3346 * @arg - user buffer
3348 * ioctl entry point for our private ioctl interface. We move the data in from
3349 * the user space, prepare the command (if necessary, convert the old MIMD
3350 * ioctl to new ioctl command), and issue a synchronous command to the
3354 megadev_ioctl(struct inode
*inode
, struct file
*filep
, unsigned int cmd
,
3361 mega_passthru __user
*upthru
; /* user address for passthru */
3362 mega_passthru
*pthru
; /* copy user passthru here */
3363 dma_addr_t pthru_dma_hndl
;
3364 void *data
= NULL
; /* data to be transferred */
3365 dma_addr_t data_dma_hndl
; /* dma handle for data xfer area */
3367 megastat_t __user
*ustats
;
3370 struct pci_dev
*pdev
;
3372 ustats
= NULL
; /* avoid compilation warnings */
3376 * Make sure only USCSICMD are issued through this interface.
3377 * MIMD application would still fire different command.
3379 if( (_IOC_TYPE(cmd
) != MEGAIOC_MAGIC
) && (cmd
!= USCSICMD
) ) {
3384 * Check and convert a possible MIMD command to NIT command.
3385 * mega_m_to_n() copies the data from the user space, so we do not
3386 * have to do it here.
3387 * NOTE: We will need some user address to copyout the data, therefore
3388 * the inteface layer will also provide us with the required user
3391 memset(&uioc
, 0, sizeof(nitioctl_t
));
3392 if( (rval
= mega_m_to_n( (void __user
*)arg
, &uioc
)) != 0 )
3396 switch( uioc
.opcode
) {
3398 case GET_DRIVER_VER
:
3399 if( put_user(driver_ver
, (u32 __user
*)uioc
.uioc_uaddr
) )
3405 if( put_user(hba_count
, (u32 __user
*)uioc
.uioc_uaddr
) )
3409 * Shucks. MIMD interface returns a positive value for number
3410 * of adapters. TODO: Change it to return 0 when there is no
3411 * applicatio using mimd interface.
3420 if( (adapno
= GETADAP(uioc
.adapno
)) >= hba_count
)
3423 if( copy_to_user(uioc
.uioc_uaddr
, mcontroller
+adapno
,
3424 sizeof(struct mcontroller
)) )
3434 if( (adapno
= GETADAP(uioc
.adapno
)) >= hba_count
)
3437 adapter
= hba_soft_state
[adapno
];
3439 ustats
= uioc
.uioc_uaddr
;
3441 if( copy_from_user(&num_ldrv
, &ustats
->num_ldrv
, sizeof(int)) )
3445 * Check for the validity of the logical drive number
3447 if( num_ldrv
>= MAX_LOGICAL_DRIVES_40LD
) return -EINVAL
;
3449 if( copy_to_user(ustats
->nreads
, adapter
->nreads
,
3450 num_ldrv
*sizeof(u32
)) )
3453 if( copy_to_user(ustats
->nreadblocks
, adapter
->nreadblocks
,
3454 num_ldrv
*sizeof(u32
)) )
3457 if( copy_to_user(ustats
->nwrites
, adapter
->nwrites
,
3458 num_ldrv
*sizeof(u32
)) )
3461 if( copy_to_user(ustats
->nwriteblocks
, adapter
->nwriteblocks
,
3462 num_ldrv
*sizeof(u32
)) )
3465 if( copy_to_user(ustats
->rd_errors
, adapter
->rd_errors
,
3466 num_ldrv
*sizeof(u32
)) )
3469 if( copy_to_user(ustats
->wr_errors
, adapter
->wr_errors
,
3470 num_ldrv
*sizeof(u32
)) )
3481 if( (adapno
= GETADAP(uioc
.adapno
)) >= hba_count
)
3484 adapter
= hba_soft_state
[adapno
];
3487 * Deletion of logical drive is a special case. The adapter
3488 * should be quiescent before this command is issued.
3490 if( uioc
.uioc_rmbox
[0] == FC_DEL_LOGDRV
&&
3491 uioc
.uioc_rmbox
[2] == OP_DEL_LOGDRV
) {
3494 * Do we support this feature
3496 if( !adapter
->support_random_del
) {
3497 printk(KERN_WARNING
"megaraid: logdrv ");
3498 printk("delete on non-supporting F/W.\n");
3503 rval
= mega_del_logdrv( adapter
, uioc
.uioc_rmbox
[3] );
3506 memset(&mc
, 0, sizeof(megacmd_t
));
3510 rval
= mega_n_to_m((void __user
*)arg
, &mc
);
3516 * This interface only support the regular passthru commands.
3517 * Reject extended passthru and 64-bit passthru
3519 if( uioc
.uioc_rmbox
[0] == MEGA_MBOXCMD_PASSTHRU64
||
3520 uioc
.uioc_rmbox
[0] == MEGA_MBOXCMD_EXTPTHRU
) {
3522 printk(KERN_WARNING
"megaraid: rejected passthru.\n");
3528 * For all internal commands, the buffer must be allocated in
3529 * <4GB address range
3531 if( make_local_pdev(adapter
, &pdev
) != 0 )
3534 /* Is it a passthru command or a DCMD */
3535 if( uioc
.uioc_rmbox
[0] == MEGA_MBOXCMD_PASSTHRU
) {
3536 /* Passthru commands */
3538 pthru
= pci_alloc_consistent(pdev
,
3539 sizeof(mega_passthru
),
3542 if( pthru
== NULL
) {
3543 free_local_pdev(pdev
);
3548 * The user passthru structure
3550 upthru
= (mega_passthru __user
*)MBOX(uioc
)->xferaddr
;
3553 * Copy in the user passthru here.
3555 if( copy_from_user(pthru
, upthru
,
3556 sizeof(mega_passthru
)) ) {
3558 pci_free_consistent(pdev
,
3559 sizeof(mega_passthru
), pthru
,
3562 free_local_pdev(pdev
);
3568 * Is there a data transfer
3570 if( pthru
->dataxferlen
) {
3571 data
= pci_alloc_consistent(pdev
,
3575 if( data
== NULL
) {
3576 pci_free_consistent(pdev
,
3577 sizeof(mega_passthru
),
3581 free_local_pdev(pdev
);
3587 * Save the user address and point the kernel
3588 * address at just allocated memory
3590 uxferaddr
= pthru
->dataxferaddr
;
3591 pthru
->dataxferaddr
= data_dma_hndl
;
3596 * Is data coming down-stream
3598 if( pthru
->dataxferlen
&& (uioc
.flags
& UIOC_WR
) ) {
3602 if( copy_from_user(data
, (char __user
*)uxferaddr
,
3603 pthru
->dataxferlen
) ) {
3605 goto freemem_and_return
;
3609 memset(&mc
, 0, sizeof(megacmd_t
));
3611 mc
.cmd
= MEGA_MBOXCMD_PASSTHRU
;
3612 mc
.xferaddr
= (u32
)pthru_dma_hndl
;
3617 mega_internal_command(adapter
, LOCK_INT
, &mc
, pthru
);
3619 rval
= mega_n_to_m((void __user
*)arg
, &mc
);
3621 if( rval
) goto freemem_and_return
;
3625 * Is data going up-stream
3627 if( pthru
->dataxferlen
&& (uioc
.flags
& UIOC_RD
) ) {
3628 if( copy_to_user((char __user
*)uxferaddr
, data
,
3629 pthru
->dataxferlen
) ) {
3635 * Send the request sense data also, irrespective of
3636 * whether the user has asked for it or not.
3638 copy_to_user(upthru
->reqsensearea
,
3639 pthru
->reqsensearea
, 14);
3642 if( pthru
->dataxferlen
) {
3643 pci_free_consistent(pdev
,
3644 pthru
->dataxferlen
, data
,
3648 pci_free_consistent(pdev
, sizeof(mega_passthru
),
3649 pthru
, pthru_dma_hndl
);
3651 free_local_pdev(pdev
);
3659 * Is there a data transfer
3661 if( uioc
.xferlen
) {
3662 data
= pci_alloc_consistent(pdev
,
3663 uioc
.xferlen
, &data_dma_hndl
);
3665 if( data
== NULL
) {
3666 free_local_pdev(pdev
);
3670 uxferaddr
= MBOX(uioc
)->xferaddr
;
3674 * Is data coming down-stream
3676 if( uioc
.xferlen
&& (uioc
.flags
& UIOC_WR
) ) {
3680 if( copy_from_user(data
, (char __user
*)uxferaddr
,
3683 pci_free_consistent(pdev
,
3685 data
, data_dma_hndl
);
3687 free_local_pdev(pdev
);
3693 memcpy(&mc
, MBOX(uioc
), sizeof(megacmd_t
));
3695 mc
.xferaddr
= (u32
)data_dma_hndl
;
3700 mega_internal_command(adapter
, LOCK_INT
, &mc
, NULL
);
3702 rval
= mega_n_to_m((void __user
*)arg
, &mc
);
3705 if( uioc
.xferlen
) {
3706 pci_free_consistent(pdev
,
3711 free_local_pdev(pdev
);
3717 * Is data going up-stream
3719 if( uioc
.xferlen
&& (uioc
.flags
& UIOC_RD
) ) {
3720 if( copy_to_user((char __user
*)uxferaddr
, data
,
3727 if( uioc
.xferlen
) {
3728 pci_free_consistent(pdev
,
3733 free_local_pdev(pdev
);
3747 * @arg - user address
3748 * @uioc - new ioctl structure
3750 * A thin layer to convert older mimd interface ioctl structure to NIT ioctl
3753 * Converts the older mimd ioctl structure to newer NIT structure
3756 mega_m_to_n(void __user
*arg
, nitioctl_t
*uioc
)
3758 struct uioctl_t uioc_mimd
;
3759 char signature
[8] = {0};
3765 * check is the application conforms to NIT. We do not have to do much
3767 * We exploit the fact that the signature is stored in the very
3768 * begining of the structure.
3771 if( copy_from_user(signature
, arg
, 7) )
3774 if( memcmp(signature
, "MEGANIT", 7) == 0 ) {
3777 * NOTE NOTE: The nit ioctl is still under flux because of
3778 * change of mailbox definition, in HPE. No applications yet
3779 * use this interface and let's not have applications use this
3780 * interface till the new specifitions are in place.
3784 if( copy_from_user(uioc
, arg
, sizeof(nitioctl_t
)) )
3791 * Else assume we have mimd uioctl_t as arg. Convert to nitioctl_t
3793 * Get the user ioctl structure
3795 if( copy_from_user(&uioc_mimd
, arg
, sizeof(struct uioctl_t
)) )
3800 * Get the opcode and subopcode for the commands
3802 opcode
= uioc_mimd
.ui
.fcs
.opcode
;
3803 subopcode
= uioc_mimd
.ui
.fcs
.subopcode
;
3808 switch (subopcode
) {
3810 case MEGAIOC_QDRVRVER
: /* Query driver version */
3811 uioc
->opcode
= GET_DRIVER_VER
;
3812 uioc
->uioc_uaddr
= uioc_mimd
.data
;
3815 case MEGAIOC_QNADAP
: /* Get # of adapters */
3816 uioc
->opcode
= GET_N_ADAP
;
3817 uioc
->uioc_uaddr
= uioc_mimd
.data
;
3820 case MEGAIOC_QADAPINFO
: /* Get adapter information */
3821 uioc
->opcode
= GET_ADAP_INFO
;
3822 uioc
->adapno
= uioc_mimd
.ui
.fcs
.adapno
;
3823 uioc
->uioc_uaddr
= uioc_mimd
.data
;
3835 uioc
->opcode
= MBOX_CMD
;
3836 uioc
->adapno
= uioc_mimd
.ui
.fcs
.adapno
;
3838 memcpy(uioc
->uioc_rmbox
, uioc_mimd
.mbox
, 18);
3840 uioc
->xferlen
= uioc_mimd
.ui
.fcs
.length
;
3842 if( uioc_mimd
.outlen
) uioc
->flags
= UIOC_RD
;
3843 if( uioc_mimd
.inlen
) uioc
->flags
|= UIOC_WR
;
3849 uioc
->opcode
= MBOX_CMD
;
3850 uioc
->adapno
= uioc_mimd
.ui
.fcs
.adapno
;
3852 memcpy(uioc
->uioc_rmbox
, uioc_mimd
.mbox
, 18);
3855 * Choose the xferlen bigger of input and output data
3857 uioc
->xferlen
= uioc_mimd
.outlen
> uioc_mimd
.inlen
?
3858 uioc_mimd
.outlen
: uioc_mimd
.inlen
;
3860 if( uioc_mimd
.outlen
) uioc
->flags
= UIOC_RD
;
3861 if( uioc_mimd
.inlen
) uioc
->flags
|= UIOC_WR
;
3875 * @arg - user address
3876 * @mc - mailbox command
3878 * Updates the status information to the application, depending on application
3879 * conforms to older mimd ioctl interface or newer NIT ioctl interface
3882 mega_n_to_m(void __user
*arg
, megacmd_t
*mc
)
3884 nitioctl_t __user
*uiocp
;
3885 megacmd_t __user
*umc
;
3886 mega_passthru __user
*upthru
;
3887 struct uioctl_t __user
*uioc_mimd
;
3888 char signature
[8] = {0};
3891 * check is the application conforms to NIT.
3893 if( copy_from_user(signature
, arg
, 7) )
3896 if( memcmp(signature
, "MEGANIT", 7) == 0 ) {
3900 if( put_user(mc
->status
, (u8 __user
*)&MBOX_P(uiocp
)->status
) )
3903 if( mc
->cmd
== MEGA_MBOXCMD_PASSTHRU
) {
3905 umc
= MBOX_P(uiocp
);
3907 if (get_user(upthru
, (mega_passthru __user
* __user
*)&umc
->xferaddr
))
3910 if( put_user(mc
->status
, (u8 __user
*)&upthru
->scsistatus
))
3917 if( put_user(mc
->status
, (u8 __user
*)&uioc_mimd
->mbox
[17]) )
3920 if( mc
->cmd
== MEGA_MBOXCMD_PASSTHRU
) {
3922 umc
= (megacmd_t __user
*)uioc_mimd
->mbox
;
3924 if (get_user(upthru
, (mega_passthru __user
* __user
*)&umc
->xferaddr
))
3927 if( put_user(mc
->status
, (u8 __user
*)&upthru
->scsistatus
) )
3937 * MEGARAID 'FW' commands.
3941 * mega_is_bios_enabled()
3942 * @adapter - pointer to our soft state
3944 * issue command to find out if the BIOS is enabled for this controller
3947 mega_is_bios_enabled(adapter_t
*adapter
)
3949 unsigned char raw_mbox
[sizeof(struct mbox_out
)];
3953 mbox
= (mbox_t
*)raw_mbox
;
3955 memset(&mbox
->m_out
, 0, sizeof(raw_mbox
));
3957 memset((void *)adapter
->mega_buffer
, 0, MEGA_BUFFER_SIZE
);
3959 mbox
->m_out
.xferaddr
= (u32
)adapter
->buf_dma_handle
;
3961 raw_mbox
[0] = IS_BIOS_ENABLED
;
3962 raw_mbox
[2] = GET_BIOS
;
3965 ret
= issue_scb_block(adapter
, raw_mbox
);
3967 return *(char *)adapter
->mega_buffer
;
3972 * mega_enum_raid_scsi()
3973 * @adapter - pointer to our soft state
3975 * Find out what channels are RAID/SCSI. This information is used to
3976 * differentiate the virtual channels and physical channels and to support
3977 * ROMB feature and non-disk devices.
3980 mega_enum_raid_scsi(adapter_t
*adapter
)
3982 unsigned char raw_mbox
[sizeof(struct mbox_out
)];
3986 mbox
= (mbox_t
*)raw_mbox
;
3988 memset(&mbox
->m_out
, 0, sizeof(raw_mbox
));
3991 * issue command to find out what channels are raid/scsi
3993 raw_mbox
[0] = CHNL_CLASS
;
3994 raw_mbox
[2] = GET_CHNL_CLASS
;
3996 memset((void *)adapter
->mega_buffer
, 0, MEGA_BUFFER_SIZE
);
3998 mbox
->m_out
.xferaddr
= (u32
)adapter
->buf_dma_handle
;
4001 * Non-ROMB firmware fail this command, so all channels
4002 * must be shown RAID
4004 adapter
->mega_ch_class
= 0xFF;
4006 if(!issue_scb_block(adapter
, raw_mbox
)) {
4007 adapter
->mega_ch_class
= *((char *)adapter
->mega_buffer
);
4011 for( i
= 0; i
< adapter
->product_info
.nchannels
; i
++ ) {
4012 if( (adapter
->mega_ch_class
>> i
) & 0x01 ) {
4013 printk(KERN_INFO
"megaraid: channel[%d] is raid.\n",
4017 printk(KERN_INFO
"megaraid: channel[%d] is scsi.\n",
4027 * mega_get_boot_drv()
4028 * @adapter - pointer to our soft state
4030 * Find out which device is the boot device. Note, any logical drive or any
4031 * phyical device (e.g., a CDROM) can be designated as a boot device.
4034 mega_get_boot_drv(adapter_t
*adapter
)
4036 struct private_bios_data
*prv_bios_data
;
4037 unsigned char raw_mbox
[sizeof(struct mbox_out
)];
4044 mbox
= (mbox_t
*)raw_mbox
;
4046 memset(&mbox
->m_out
, 0, sizeof(raw_mbox
));
4048 raw_mbox
[0] = BIOS_PVT_DATA
;
4049 raw_mbox
[2] = GET_BIOS_PVT_DATA
;
4051 memset((void *)adapter
->mega_buffer
, 0, MEGA_BUFFER_SIZE
);
4053 mbox
->m_out
.xferaddr
= (u32
)adapter
->buf_dma_handle
;
4055 adapter
->boot_ldrv_enabled
= 0;
4056 adapter
->boot_ldrv
= 0;
4058 adapter
->boot_pdrv_enabled
= 0;
4059 adapter
->boot_pdrv_ch
= 0;
4060 adapter
->boot_pdrv_tgt
= 0;
4062 if(issue_scb_block(adapter
, raw_mbox
) == 0) {
4064 (struct private_bios_data
*)adapter
->mega_buffer
;
4067 cksum_p
= (char *)prv_bios_data
;
4068 for (i
= 0; i
< 14; i
++ ) {
4069 cksum
+= (u16
)(*cksum_p
++);
4072 if (prv_bios_data
->cksum
== (u16
)(0-cksum
) ) {
4075 * If MSB is set, a physical drive is set as boot
4078 if( prv_bios_data
->boot_drv
& 0x80 ) {
4079 adapter
->boot_pdrv_enabled
= 1;
4080 boot_pdrv
= prv_bios_data
->boot_drv
& 0x7F;
4081 adapter
->boot_pdrv_ch
= boot_pdrv
/ 16;
4082 adapter
->boot_pdrv_tgt
= boot_pdrv
% 16;
4085 adapter
->boot_ldrv_enabled
= 1;
4086 adapter
->boot_ldrv
= prv_bios_data
->boot_drv
;
4094 * mega_support_random_del()
4095 * @adapter - pointer to our soft state
4097 * Find out if this controller supports random deletion and addition of
4101 mega_support_random_del(adapter_t
*adapter
)
4103 unsigned char raw_mbox
[sizeof(struct mbox_out
)];
4107 mbox
= (mbox_t
*)raw_mbox
;
4109 memset(&mbox
->m_out
, 0, sizeof(raw_mbox
));
4114 raw_mbox
[0] = FC_DEL_LOGDRV
;
4115 raw_mbox
[2] = OP_SUP_DEL_LOGDRV
;
4117 rval
= issue_scb_block(adapter
, raw_mbox
);
4124 * mega_support_ext_cdb()
4125 * @adapter - pointer to our soft state
4127 * Find out if this firmware support cdblen > 10
4130 mega_support_ext_cdb(adapter_t
*adapter
)
4132 unsigned char raw_mbox
[sizeof(struct mbox_out
)];
4136 mbox
= (mbox_t
*)raw_mbox
;
4138 memset(&mbox
->m_out
, 0, sizeof(raw_mbox
));
4140 * issue command to find out if controller supports extended CDBs.
4145 rval
= issue_scb_block(adapter
, raw_mbox
);
4153 * @adapter - pointer to our soft state
4154 * @logdrv - logical drive to be deleted
4156 * Delete the specified logical drive. It is the responsibility of the user
4157 * app to let the OS know about this operation.
4160 mega_del_logdrv(adapter_t
*adapter
, int logdrv
)
4162 unsigned long flags
;
4167 * Stop sending commands to the controller, queue them internally.
4168 * When deletion is complete, ISR will flush the queue.
4170 atomic_set(&adapter
->quiescent
, 1);
4173 * Wait till all the issued commands are complete and there are no
4174 * commands in the pending queue
4176 while (atomic_read(&adapter
->pend_cmds
) > 0 ||
4177 !list_empty(&adapter
->pending_list
))
4178 msleep(1000); /* sleep for 1s */
4180 rval
= mega_do_del_logdrv(adapter
, logdrv
);
4182 spin_lock_irqsave(&adapter
->lock
, flags
);
4185 * If delete operation was successful, add 0x80 to the logical drive
4186 * ids for commands in the pending queue.
4188 if (adapter
->read_ldidmap
) {
4189 struct list_head
*pos
;
4190 list_for_each(pos
, &adapter
->pending_list
) {
4191 scb
= list_entry(pos
, scb_t
, list
);
4192 if (scb
->pthru
->logdrv
< 0x80 )
4193 scb
->pthru
->logdrv
+= 0x80;
4197 atomic_set(&adapter
->quiescent
, 0);
4199 mega_runpendq(adapter
);
4201 spin_unlock_irqrestore(&adapter
->lock
, flags
);
4208 mega_do_del_logdrv(adapter_t
*adapter
, int logdrv
)
4213 memset( &mc
, 0, sizeof(megacmd_t
));
4215 mc
.cmd
= FC_DEL_LOGDRV
;
4216 mc
.opcode
= OP_DEL_LOGDRV
;
4217 mc
.subopcode
= logdrv
;
4219 rval
= mega_internal_command(adapter
, LOCK_INT
, &mc
, NULL
);
4221 /* log this event */
4223 printk(KERN_WARNING
"megaraid: Delete LD-%d failed.", logdrv
);
4228 * After deleting first logical drive, the logical drives must be
4229 * addressed by adding 0x80 to the logical drive id.
4231 adapter
->read_ldidmap
= 1;
4238 * mega_get_max_sgl()
4239 * @adapter - pointer to our soft state
4241 * Find out the maximum number of scatter-gather elements supported by this
4242 * version of the firmware
4245 mega_get_max_sgl(adapter_t
*adapter
)
4247 unsigned char raw_mbox
[sizeof(struct mbox_out
)];
4250 mbox
= (mbox_t
*)raw_mbox
;
4252 memset(mbox
, 0, sizeof(raw_mbox
));
4254 memset((void *)adapter
->mega_buffer
, 0, MEGA_BUFFER_SIZE
);
4256 mbox
->m_out
.xferaddr
= (u32
)adapter
->buf_dma_handle
;
4258 raw_mbox
[0] = MAIN_MISC_OPCODE
;
4259 raw_mbox
[2] = GET_MAX_SG_SUPPORT
;
4262 if( issue_scb_block(adapter
, raw_mbox
) ) {
4264 * f/w does not support this command. Choose the default value
4266 adapter
->sglen
= MIN_SGLIST
;
4269 adapter
->sglen
= *((char *)adapter
->mega_buffer
);
4272 * Make sure this is not more than the resources we are
4273 * planning to allocate
4275 if ( adapter
->sglen
> MAX_SGLIST
)
4276 adapter
->sglen
= MAX_SGLIST
;
4284 * mega_support_cluster()
4285 * @adapter - pointer to our soft state
4287 * Find out if this firmware support cluster calls.
4290 mega_support_cluster(adapter_t
*adapter
)
4292 unsigned char raw_mbox
[sizeof(struct mbox_out
)];
4295 mbox
= (mbox_t
*)raw_mbox
;
4297 memset(mbox
, 0, sizeof(raw_mbox
));
4299 memset((void *)adapter
->mega_buffer
, 0, MEGA_BUFFER_SIZE
);
4301 mbox
->m_out
.xferaddr
= (u32
)adapter
->buf_dma_handle
;
4304 * Try to get the initiator id. This command will succeed iff the
4305 * clustering is available on this HBA.
4307 raw_mbox
[0] = MEGA_GET_TARGET_ID
;
4309 if( issue_scb_block(adapter
, raw_mbox
) == 0 ) {
4312 * Cluster support available. Get the initiator target id.
4313 * Tell our id to mid-layer too.
4315 adapter
->this_id
= *(u32
*)adapter
->mega_buffer
;
4316 adapter
->host
->this_id
= adapter
->this_id
;
4327 * @adapter - pointer to our soft state
4328 * @dma_handle - DMA address of the buffer
4330 * Issue internal comamnds while interrupts are available.
4331 * We only issue direct mailbox commands from within the driver. ioctl()
4332 * interface using these routines can issue passthru commands.
4335 mega_adapinq(adapter_t
*adapter
, dma_addr_t dma_handle
)
4339 memset(&mc
, 0, sizeof(megacmd_t
));
4341 if( adapter
->flag
& BOARD_40LD
) {
4342 mc
.cmd
= FC_NEW_CONFIG
;
4343 mc
.opcode
= NC_SUBOP_ENQUIRY3
;
4344 mc
.subopcode
= ENQ3_GET_SOLICITED_FULL
;
4347 mc
.cmd
= MEGA_MBOXCMD_ADPEXTINQ
;
4350 mc
.xferaddr
= (u32
)dma_handle
;
4352 if ( mega_internal_command(adapter
, LOCK_INT
, &mc
, NULL
) != 0 ) {
4360 /** mega_internal_dev_inquiry()
4361 * @adapter - pointer to our soft state
4362 * @ch - channel for this device
4363 * @tgt - ID of this device
4364 * @buf_dma_handle - DMA address of the buffer
4366 * Issue the scsi inquiry for the specified device.
4369 mega_internal_dev_inquiry(adapter_t
*adapter
, u8 ch
, u8 tgt
,
4370 dma_addr_t buf_dma_handle
)
4372 mega_passthru
*pthru
;
4373 dma_addr_t pthru_dma_handle
;
4376 struct pci_dev
*pdev
;
4380 * For all internal commands, the buffer must be allocated in <4GB
4383 if( make_local_pdev(adapter
, &pdev
) != 0 ) return -1;
4385 pthru
= pci_alloc_consistent(pdev
, sizeof(mega_passthru
),
4388 if( pthru
== NULL
) {
4389 free_local_pdev(pdev
);
4395 pthru
->reqsenselen
= 14;
4396 pthru
->islogical
= 0;
4398 pthru
->channel
= (adapter
->flag
& BOARD_40LD
) ? 0 : ch
;
4400 pthru
->target
= (adapter
->flag
& BOARD_40LD
) ? (ch
<< 4)|tgt
: tgt
;
4404 pthru
->cdb
[0] = INQUIRY
;
4408 pthru
->cdb
[4] = 255;
4412 pthru
->dataxferaddr
= (u32
)buf_dma_handle
;
4413 pthru
->dataxferlen
= 256;
4415 memset(&mc
, 0, sizeof(megacmd_t
));
4417 mc
.cmd
= MEGA_MBOXCMD_PASSTHRU
;
4418 mc
.xferaddr
= (u32
)pthru_dma_handle
;
4420 rval
= mega_internal_command(adapter
, LOCK_INT
, &mc
, pthru
);
4422 pci_free_consistent(pdev
, sizeof(mega_passthru
), pthru
,
4425 free_local_pdev(pdev
);
4432 * mega_internal_command()
4433 * @adapter - pointer to our soft state
4434 * @ls - the scope of the exclusion lock.
4435 * @mc - the mailbox command
4436 * @pthru - Passthru structure for DCDB commands
4438 * Issue the internal commands in interrupt mode.
4439 * The last argument is the address of the passthru structure if the command
4440 * to be fired is a passthru command
4442 * lockscope specifies whether the caller has already acquired the lock. Of
4443 * course, the caller must know which lock we are talking about.
4445 * Note: parameter 'pthru' is null for non-passthru commands.
4448 mega_internal_command(adapter_t
*adapter
, lockscope_t ls
, megacmd_t
*mc
,
4449 mega_passthru
*pthru
)
4452 struct scsi_device
*sdev
;
4453 unsigned long flags
= 0;
4458 * The internal commands share one command id and hence are
4459 * serialized. This is so because we want to reserve maximum number of
4460 * available command ids for the I/O commands.
4462 down(&adapter
->int_mtx
);
4464 scb
= &adapter
->int_scb
;
4465 memset(scb
, 0, sizeof(scb_t
));
4467 scmd
= &adapter
->int_scmd
;
4468 memset(scmd
, 0, sizeof(Scsi_Cmnd
));
4470 sdev
= kmalloc(sizeof(struct scsi_device
), GFP_KERNEL
);
4471 memset(sdev
, 0, sizeof(struct scsi_device
));
4472 scmd
->device
= sdev
;
4474 scmd
->device
->host
= adapter
->host
;
4475 scmd
->buffer
= (void *)scb
;
4476 scmd
->cmnd
[0] = MEGA_INTERNAL_CMD
;
4478 scb
->state
|= SCB_ACTIVE
;
4481 memcpy(scb
->raw_mbox
, mc
, sizeof(megacmd_t
));
4484 * Is it a passthru command
4486 if( mc
->cmd
== MEGA_MBOXCMD_PASSTHRU
) {
4491 scb
->idx
= CMDID_INT_CMDS
;
4496 * Get the lock only if the caller has not acquired it already
4498 if( ls
== LOCK_INT
) spin_lock_irqsave(&adapter
->lock
, flags
);
4500 megaraid_queue(scmd
, mega_internal_done
);
4502 if( ls
== LOCK_INT
) spin_unlock_irqrestore(&adapter
->lock
, flags
);
4505 * Wait till this command finishes. Do not use
4506 * wait_event_interruptible(). It causes panic if CTRL-C is hit when
4507 * dumping e.g., physical disk information through /proc interface.
4510 wait_event_interruptible(adapter
->int_waitq
, scmd
->state
);
4512 wait_event(adapter
->int_waitq
, scmd
->state
);
4514 rval
= scmd
->result
;
4515 mc
->status
= scmd
->result
;
4519 * Print a debug message for all failed commands. Applications can use
4522 if( scmd
->result
&& trace_level
) {
4523 printk("megaraid: cmd [%x, %x, %x] status:[%x]\n",
4524 mc
->cmd
, mc
->opcode
, mc
->subopcode
, scmd
->result
);
4527 up(&adapter
->int_mtx
);
4534 * mega_internal_done()
4535 * @scmd - internal scsi command
4537 * Callback routine for internal commands.
4540 mega_internal_done(Scsi_Cmnd
*scmd
)
4544 adapter
= (adapter_t
*)scmd
->device
->host
->hostdata
;
4546 scmd
->state
= 1; /* thread waiting for its command to complete */
4549 * See comment in mega_internal_command() routine for
4550 * wait_event_interruptible()
4553 wake_up_interruptible(&adapter
->int_waitq
);
4555 wake_up(&adapter
->int_waitq
);
4560 static struct scsi_host_template megaraid_template
= {
4561 .module
= THIS_MODULE
,
4563 .proc_name
= "megaraid",
4564 .info
= megaraid_info
,
4565 .queuecommand
= megaraid_queue
,
4566 .bios_param
= megaraid_biosparam
,
4567 .max_sectors
= MAX_SECTORS_PER_IO
,
4568 .can_queue
= MAX_COMMANDS
,
4569 .this_id
= DEFAULT_INITIATOR_ID
,
4570 .sg_tablesize
= MAX_SGLIST
,
4571 .cmd_per_lun
= DEF_CMD_PER_LUN
,
4572 .use_clustering
= ENABLE_CLUSTERING
,
4573 .eh_abort_handler
= megaraid_abort
,
4574 .eh_device_reset_handler
= megaraid_reset
,
4575 .eh_bus_reset_handler
= megaraid_reset
,
4576 .eh_host_reset_handler
= megaraid_reset
,
4579 static int __devinit
4580 megaraid_probe_one(struct pci_dev
*pdev
, const struct pci_device_id
*id
)
4582 struct Scsi_Host
*host
;
4584 unsigned long mega_baseport
, tbase
, flag
= 0;
4585 u16 subsysid
, subsysvid
;
4586 u8 pci_bus
, pci_dev_func
;
4588 int error
= -ENODEV
;
4590 if (pci_enable_device(pdev
))
4592 pci_set_master(pdev
);
4594 pci_bus
= pdev
->bus
->number
;
4595 pci_dev_func
= pdev
->devfn
;
4598 * The megaraid3 stuff reports the ID of the Intel part which is not
4599 * remotely specific to the megaraid
4601 if (pdev
->vendor
== PCI_VENDOR_ID_INTEL
) {
4604 * Don't fall over the Compaq management cards using the same
4607 if (pdev
->subsystem_vendor
== PCI_VENDOR_ID_COMPAQ
&&
4608 pdev
->subsystem_device
== 0xC000)
4610 /* Now check the magic signature byte */
4611 pci_read_config_word(pdev
, PCI_CONF_AMISIG
, &magic
);
4612 if (magic
!= HBA_SIGNATURE_471
&& magic
!= HBA_SIGNATURE
)
4614 /* Ok it is probably a megaraid */
4618 * For these vendor and device ids, signature offsets are not
4619 * valid and 64 bit is implicit
4621 if (id
->driver_data
& BOARD_64BIT
)
4622 flag
|= BOARD_64BIT
;
4626 pci_read_config_dword(pdev
, PCI_CONF_AMISIG64
, &magic64
);
4627 if (magic64
== HBA_SIGNATURE_64BIT
)
4628 flag
|= BOARD_64BIT
;
4631 subsysvid
= pdev
->subsystem_vendor
;
4632 subsysid
= pdev
->subsystem_device
;
4634 printk(KERN_NOTICE
"megaraid: found 0x%4.04x:0x%4.04x:bus %d:",
4635 id
->vendor
, id
->device
, pci_bus
);
4637 printk("slot %d:func %d\n",
4638 PCI_SLOT(pci_dev_func
), PCI_FUNC(pci_dev_func
));
4640 /* Read the base port and IRQ from PCI */
4641 mega_baseport
= pci_resource_start(pdev
, 0);
4644 tbase
= mega_baseport
;
4645 if (pci_resource_flags(pdev
, 0) & IORESOURCE_MEM
) {
4646 flag
|= BOARD_MEMMAP
;
4648 if (!request_mem_region(mega_baseport
, 128, "megaraid")) {
4649 printk(KERN_WARNING
"megaraid: mem region busy!\n");
4650 goto out_disable_device
;
4653 mega_baseport
= (unsigned long)ioremap(mega_baseport
, 128);
4654 if (!mega_baseport
) {
4656 "megaraid: could not map hba memory\n");
4657 goto out_release_region
;
4660 flag
|= BOARD_IOMAP
;
4661 mega_baseport
+= 0x10;
4663 if (!request_region(mega_baseport
, 16, "megaraid"))
4664 goto out_disable_device
;
4667 /* Initialize SCSI Host structure */
4668 host
= scsi_host_alloc(&megaraid_template
, sizeof(adapter_t
));
4672 adapter
= (adapter_t
*)host
->hostdata
;
4673 memset(adapter
, 0, sizeof(adapter_t
));
4676 "scsi%d:Found MegaRAID controller at 0x%lx, IRQ:%d\n",
4677 host
->host_no
, mega_baseport
, irq
);
4679 adapter
->base
= mega_baseport
;
4681 INIT_LIST_HEAD(&adapter
->free_list
);
4682 INIT_LIST_HEAD(&adapter
->pending_list
);
4683 INIT_LIST_HEAD(&adapter
->completed_list
);
4685 adapter
->flag
= flag
;
4686 spin_lock_init(&adapter
->lock
);
4687 scsi_assign_lock(host
, &adapter
->lock
);
4689 host
->cmd_per_lun
= max_cmd_per_lun
;
4690 host
->max_sectors
= max_sectors_per_io
;
4692 adapter
->dev
= pdev
;
4693 adapter
->host
= host
;
4695 adapter
->host
->irq
= irq
;
4697 if (flag
& BOARD_MEMMAP
)
4698 adapter
->host
->base
= tbase
;
4700 adapter
->host
->io_port
= tbase
;
4701 adapter
->host
->n_io_port
= 16;
4704 adapter
->host
->unique_id
= (pci_bus
<< 8) | pci_dev_func
;
4707 * Allocate buffer to issue internal commands.
4709 adapter
->mega_buffer
= pci_alloc_consistent(adapter
->dev
,
4710 MEGA_BUFFER_SIZE
, &adapter
->buf_dma_handle
);
4711 if (!adapter
->mega_buffer
) {
4712 printk(KERN_WARNING
"megaraid: out of RAM.\n");
4716 adapter
->scb_list
= kmalloc(sizeof(scb_t
) * MAX_COMMANDS
, GFP_KERNEL
);
4717 if (!adapter
->scb_list
) {
4718 printk(KERN_WARNING
"megaraid: out of RAM.\n");
4719 goto out_free_cmd_buffer
;
4722 if (request_irq(irq
, (adapter
->flag
& BOARD_MEMMAP
) ?
4723 megaraid_isr_memmapped
: megaraid_isr_iomapped
,
4724 SA_SHIRQ
, "megaraid", adapter
)) {
4726 "megaraid: Couldn't register IRQ %d!\n", irq
);
4727 goto out_free_scb_list
;
4730 if (mega_setup_mailbox(adapter
))
4733 if (mega_query_adapter(adapter
))
4737 * Have checks for some buggy f/w
4739 if ((subsysid
== 0x1111) && (subsysvid
== 0x1111)) {
4743 if (!strcmp(adapter
->fw_version
, "3.00") ||
4744 !strcmp(adapter
->fw_version
, "3.01")) {
4746 printk( KERN_WARNING
4747 "megaraid: Your card is a Dell PERC "
4748 "2/SC RAID controller with "
4749 "firmware\nmegaraid: 3.00 or 3.01. "
4750 "This driver is known to have "
4751 "corruption issues\nmegaraid: with "
4752 "those firmware versions on this "
4753 "specific card. In order\nmegaraid: "
4754 "to protect your data, please upgrade "
4755 "your firmware to version\nmegaraid: "
4756 "3.10 or later, available from the "
4757 "Dell Technical Support web\n"
4758 "megaraid: site at\nhttp://support."
4759 "dell.com/us/en/filelib/download/"
4760 "index.asp?fileid=2940\n"
4766 * If we have a HP 1M(0x60E7)/2M(0x60E8) controller with
4767 * firmware H.01.07, H.01.08, and H.01.09 disable 64 bit
4768 * support, since this firmware cannot handle 64 bit
4771 if ((subsysvid
== HP_SUBSYS_VID
) &&
4772 ((subsysid
== 0x60E7) || (subsysid
== 0x60E8))) {
4776 if (!strcmp(adapter
->fw_version
, "H01.07") ||
4777 !strcmp(adapter
->fw_version
, "H01.08") ||
4778 !strcmp(adapter
->fw_version
, "H01.09") ) {
4780 "megaraid: Firmware H.01.07, "
4781 "H.01.08, and H.01.09 on 1M/2M "
4783 "megaraid: do not support 64 bit "
4784 "addressing.\nmegaraid: DISABLING "
4785 "64 bit support.\n");
4786 adapter
->flag
&= ~BOARD_64BIT
;
4790 if (mega_is_bios_enabled(adapter
))
4791 mega_hbas
[hba_count
].is_bios_enabled
= 1;
4792 mega_hbas
[hba_count
].hostdata_addr
= adapter
;
4795 * Find out which channel is raid and which is scsi. This is
4798 mega_enum_raid_scsi(adapter
);
4801 * Find out if a logical drive is set as the boot drive. If
4802 * there is one, will make that as the first logical drive.
4803 * ROMB: Do we have to boot from a physical drive. Then all
4804 * the physical drives would appear before the logical disks.
4805 * Else, all the physical drives would be exported to the mid
4806 * layer after logical drives.
4808 mega_get_boot_drv(adapter
);
4810 if (adapter
->boot_pdrv_enabled
) {
4811 j
= adapter
->product_info
.nchannels
;
4812 for( i
= 0; i
< j
; i
++ )
4813 adapter
->logdrv_chan
[i
] = 0;
4814 for( i
= j
; i
< NVIRT_CHAN
+ j
; i
++ )
4815 adapter
->logdrv_chan
[i
] = 1;
4817 for (i
= 0; i
< NVIRT_CHAN
; i
++)
4818 adapter
->logdrv_chan
[i
] = 1;
4819 for (i
= NVIRT_CHAN
; i
< MAX_CHANNELS
+NVIRT_CHAN
; i
++)
4820 adapter
->logdrv_chan
[i
] = 0;
4821 adapter
->mega_ch_class
<<= NVIRT_CHAN
;
4825 * Do we support random deletion and addition of logical
4828 adapter
->read_ldidmap
= 0; /* set it after first logdrv
4830 adapter
->support_random_del
= mega_support_random_del(adapter
);
4832 /* Initialize SCBs */
4833 if (mega_init_scb(adapter
))
4837 * Reset the pending commands counter
4839 atomic_set(&adapter
->pend_cmds
, 0);
4842 * Reset the adapter quiescent flag
4844 atomic_set(&adapter
->quiescent
, 0);
4846 hba_soft_state
[hba_count
] = adapter
;
4849 * Fill in the structure which needs to be passed back to the
4850 * application when it does an ioctl() for controller related
4855 mcontroller
[i
].base
= mega_baseport
;
4856 mcontroller
[i
].irq
= irq
;
4857 mcontroller
[i
].numldrv
= adapter
->numldrv
;
4858 mcontroller
[i
].pcibus
= pci_bus
;
4859 mcontroller
[i
].pcidev
= id
->device
;
4860 mcontroller
[i
].pcifun
= PCI_FUNC (pci_dev_func
);
4861 mcontroller
[i
].pciid
= -1;
4862 mcontroller
[i
].pcivendor
= id
->vendor
;
4863 mcontroller
[i
].pcislot
= PCI_SLOT(pci_dev_func
);
4864 mcontroller
[i
].uid
= (pci_bus
<< 8) | pci_dev_func
;
4867 /* Set the Mode of addressing to 64 bit if we can */
4868 if ((adapter
->flag
& BOARD_64BIT
) && (sizeof(dma_addr_t
) == 8)) {
4869 pci_set_dma_mask(pdev
, 0xffffffffffffffffULL
);
4870 adapter
->has_64bit_addr
= 1;
4872 pci_set_dma_mask(pdev
, 0xffffffff);
4873 adapter
->has_64bit_addr
= 0;
4876 init_MUTEX(&adapter
->int_mtx
);
4877 init_waitqueue_head(&adapter
->int_waitq
);
4879 adapter
->this_id
= DEFAULT_INITIATOR_ID
;
4880 adapter
->host
->this_id
= DEFAULT_INITIATOR_ID
;
4882 #if MEGA_HAVE_CLUSTERING
4884 * Is cluster support enabled on this controller
4885 * Note: In a cluster the HBAs ( the initiators ) will have
4886 * different target IDs and we cannot assume it to be 7. Call
4887 * to mega_support_cluster() will get the target ids also if
4888 * the cluster support is available
4890 adapter
->has_cluster
= mega_support_cluster(adapter
);
4891 if (adapter
->has_cluster
) {
4893 "megaraid: Cluster driver, initiator id:%d\n",
4898 pci_set_drvdata(pdev
, host
);
4900 mega_create_proc_entry(hba_count
, mega_proc_dir_entry
);
4902 error
= scsi_add_host(host
, &pdev
->dev
);
4906 scsi_scan_host(host
);
4911 pci_free_consistent(adapter
->dev
, sizeof(mbox64_t
),
4912 adapter
->una_mbox64
, adapter
->una_mbox64_dma
);
4914 free_irq(adapter
->host
->irq
, adapter
);
4916 kfree(adapter
->scb_list
);
4917 out_free_cmd_buffer
:
4918 pci_free_consistent(adapter
->dev
, MEGA_BUFFER_SIZE
,
4919 adapter
->mega_buffer
, adapter
->buf_dma_handle
);
4921 scsi_host_put(host
);
4923 if (flag
& BOARD_MEMMAP
)
4924 iounmap((void *)mega_baseport
);
4926 if (flag
& BOARD_MEMMAP
)
4927 release_mem_region(tbase
, 128);
4929 release_region(mega_baseport
, 16);
4931 pci_disable_device(pdev
);
4937 __megaraid_shutdown(adapter_t
*adapter
)
4939 u_char raw_mbox
[sizeof(struct mbox_out
)];
4940 mbox_t
*mbox
= (mbox_t
*)raw_mbox
;
4943 /* Flush adapter cache */
4944 memset(&mbox
->m_out
, 0, sizeof(raw_mbox
));
4945 raw_mbox
[0] = FLUSH_ADAPTER
;
4947 free_irq(adapter
->host
->irq
, adapter
);
4949 /* Issue a blocking (interrupts disabled) command to the card */
4950 issue_scb_block(adapter
, raw_mbox
);
4952 /* Flush disks cache */
4953 memset(&mbox
->m_out
, 0, sizeof(raw_mbox
));
4954 raw_mbox
[0] = FLUSH_SYSTEM
;
4956 /* Issue a blocking (interrupts disabled) command to the card */
4957 issue_scb_block(adapter
, raw_mbox
);
4959 if (atomic_read(&adapter
->pend_cmds
) > 0)
4960 printk(KERN_WARNING
"megaraid: pending commands!!\n");
4963 * Have a delibrate delay to make sure all the caches are
4966 for (i
= 0; i
<= 10; i
++)
4971 megaraid_remove_one(struct pci_dev
*pdev
)
4973 struct Scsi_Host
*host
= pci_get_drvdata(pdev
);
4974 adapter_t
*adapter
= (adapter_t
*)host
->hostdata
;
4975 char buf
[12] = { 0 };
4977 scsi_remove_host(host
);
4979 __megaraid_shutdown(adapter
);
4981 /* Free our resources */
4982 if (adapter
->flag
& BOARD_MEMMAP
) {
4983 iounmap((void *)adapter
->base
);
4984 release_mem_region(adapter
->host
->base
, 128);
4986 release_region(adapter
->base
, 16);
4988 mega_free_sgl(adapter
);
4990 #ifdef CONFIG_PROC_FS
4991 if (adapter
->controller_proc_dir_entry
) {
4992 remove_proc_entry("stat", adapter
->controller_proc_dir_entry
);
4993 remove_proc_entry("config",
4994 adapter
->controller_proc_dir_entry
);
4995 remove_proc_entry("mailbox",
4996 adapter
->controller_proc_dir_entry
);
4997 #if MEGA_HAVE_ENH_PROC
4998 remove_proc_entry("rebuild-rate",
4999 adapter
->controller_proc_dir_entry
);
5000 remove_proc_entry("battery-status",
5001 adapter
->controller_proc_dir_entry
);
5003 remove_proc_entry("diskdrives-ch0",
5004 adapter
->controller_proc_dir_entry
);
5005 remove_proc_entry("diskdrives-ch1",
5006 adapter
->controller_proc_dir_entry
);
5007 remove_proc_entry("diskdrives-ch2",
5008 adapter
->controller_proc_dir_entry
);
5009 remove_proc_entry("diskdrives-ch3",
5010 adapter
->controller_proc_dir_entry
);
5012 remove_proc_entry("raiddrives-0-9",
5013 adapter
->controller_proc_dir_entry
);
5014 remove_proc_entry("raiddrives-10-19",
5015 adapter
->controller_proc_dir_entry
);
5016 remove_proc_entry("raiddrives-20-29",
5017 adapter
->controller_proc_dir_entry
);
5018 remove_proc_entry("raiddrives-30-39",
5019 adapter
->controller_proc_dir_entry
);
5021 sprintf(buf
, "hba%d", adapter
->host
->host_no
);
5022 remove_proc_entry(buf
, mega_proc_dir_entry
);
5026 pci_free_consistent(adapter
->dev
, MEGA_BUFFER_SIZE
,
5027 adapter
->mega_buffer
, adapter
->buf_dma_handle
);
5028 kfree(adapter
->scb_list
);
5029 pci_free_consistent(adapter
->dev
, sizeof(mbox64_t
),
5030 adapter
->una_mbox64
, adapter
->una_mbox64_dma
);
5032 scsi_host_put(host
);
5033 pci_disable_device(pdev
);
5039 megaraid_shutdown(struct device
*dev
)
5041 struct Scsi_Host
*host
= pci_get_drvdata(to_pci_dev(dev
));
5042 adapter_t
*adapter
= (adapter_t
*)host
->hostdata
;
5044 __megaraid_shutdown(adapter
);
5047 static struct pci_device_id megaraid_pci_tbl
[] = {
5048 {PCI_VENDOR_ID_DELL
, PCI_DEVICE_ID_DISCOVERY
,
5049 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0},
5050 {PCI_VENDOR_ID_DELL
, PCI_DEVICE_ID_PERC4_DI
,
5051 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, BOARD_64BIT
},
5052 {PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_PERC4_QC_VERDE
,
5053 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, BOARD_64BIT
},
5054 {PCI_VENDOR_ID_AMI
, PCI_DEVICE_ID_AMI_MEGARAID
,
5055 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0},
5056 {PCI_VENDOR_ID_AMI
, PCI_DEVICE_ID_AMI_MEGARAID2
,
5057 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0},
5058 {PCI_VENDOR_ID_AMI
, PCI_DEVICE_ID_AMI_MEGARAID3
,
5059 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0},
5060 {PCI_VENDOR_ID_INTEL
, PCI_DEVICE_ID_AMI_MEGARAID3
,
5061 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0},
5062 {PCI_VENDOR_ID_LSI_LOGIC
, PCI_DEVICE_ID_AMI_MEGARAID3
,
5063 PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, 0},
5066 MODULE_DEVICE_TABLE(pci
, megaraid_pci_tbl
);
5068 static struct pci_driver megaraid_pci_driver
= {
5070 .id_table
= megaraid_pci_tbl
,
5071 .probe
= megaraid_probe_one
,
5072 .remove
= __devexit_p(megaraid_remove_one
),
5074 .shutdown
= megaraid_shutdown
,
5078 static int __init
megaraid_init(void)
5082 if ((max_cmd_per_lun
<= 0) || (max_cmd_per_lun
> MAX_CMD_PER_LUN
))
5083 max_cmd_per_lun
= MAX_CMD_PER_LUN
;
5084 if (max_mbox_busy_wait
> MBOX_BUSY_WAIT
)
5085 max_mbox_busy_wait
= MBOX_BUSY_WAIT
;
5087 #ifdef CONFIG_PROC_FS
5088 mega_proc_dir_entry
= proc_mkdir("megaraid", &proc_root
);
5089 if (!mega_proc_dir_entry
) {
5091 "megaraid: failed to create megaraid root\n");
5094 error
= pci_module_init(&megaraid_pci_driver
);
5096 #ifdef CONFIG_PROC_FS
5097 remove_proc_entry("megaraid", &proc_root
);
5103 * Register the driver as a character device, for applications
5104 * to access it for ioctls.
5105 * First argument (major) to register_chrdev implies a dynamic
5106 * major number allocation.
5108 major
= register_chrdev(0, "megadev", &megadev_fops
);
5111 "megaraid: failed to register char device\n");
5117 static void __exit
megaraid_exit(void)
5120 * Unregister the character device interface to the driver.
5122 unregister_chrdev(major
, "megadev");
5124 pci_unregister_driver(&megaraid_pci_driver
);
5126 #ifdef CONFIG_PROC_FS
5127 remove_proc_entry("megaraid", &proc_root
);
5131 module_init(megaraid_init
);
5132 module_exit(megaraid_exit
);
5134 /* vi: set ts=8 sw=8 tw=78: */