2 * SuperTrak EX Series Storage Controller driver for Linux
4 * Copyright (C) 2005, 2006 Promise Technology Inc.
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
12 * Ed Lin <promise_linux@promise.com>
16 #include <linux/init.h>
17 #include <linux/errno.h>
18 #include <linux/kernel.h>
19 #include <linux/delay.h>
20 #include <linux/time.h>
21 #include <linux/pci.h>
22 #include <linux/blkdev.h>
23 #include <linux/interrupt.h>
24 #include <linux/types.h>
25 #include <linux/module.h>
26 #include <linux/spinlock.h>
29 #include <asm/byteorder.h>
30 #include <scsi/scsi.h>
31 #include <scsi/scsi_device.h>
32 #include <scsi/scsi_cmnd.h>
33 #include <scsi/scsi_host.h>
34 #include <scsi/scsi_tcq.h>
35 #include <scsi/scsi_dbg.h>
36 #include <scsi/scsi_eh.h>
38 #define DRV_NAME "stex"
39 #define ST_DRIVER_VERSION "3.6.0000.1"
40 #define ST_VER_MAJOR 3
41 #define ST_VER_MINOR 6
43 #define ST_BUILD_VER 1
46 /* MU register offset */
47 IMR0
= 0x10, /* MU_INBOUND_MESSAGE_REG0 */
48 IMR1
= 0x14, /* MU_INBOUND_MESSAGE_REG1 */
49 OMR0
= 0x18, /* MU_OUTBOUND_MESSAGE_REG0 */
50 OMR1
= 0x1c, /* MU_OUTBOUND_MESSAGE_REG1 */
51 IDBL
= 0x20, /* MU_INBOUND_DOORBELL */
52 IIS
= 0x24, /* MU_INBOUND_INTERRUPT_STATUS */
53 IIM
= 0x28, /* MU_INBOUND_INTERRUPT_MASK */
54 ODBL
= 0x2c, /* MU_OUTBOUND_DOORBELL */
55 OIS
= 0x30, /* MU_OUTBOUND_INTERRUPT_STATUS */
56 OIM
= 0x3c, /* MU_OUTBOUND_INTERRUPT_MASK */
58 /* MU register value */
59 MU_INBOUND_DOORBELL_HANDSHAKE
= 1,
60 MU_INBOUND_DOORBELL_REQHEADCHANGED
= 2,
61 MU_INBOUND_DOORBELL_STATUSTAILCHANGED
= 4,
62 MU_INBOUND_DOORBELL_HMUSTOPPED
= 8,
63 MU_INBOUND_DOORBELL_RESET
= 16,
65 MU_OUTBOUND_DOORBELL_HANDSHAKE
= 1,
66 MU_OUTBOUND_DOORBELL_REQUESTTAILCHANGED
= 2,
67 MU_OUTBOUND_DOORBELL_STATUSHEADCHANGED
= 4,
68 MU_OUTBOUND_DOORBELL_BUSCHANGE
= 8,
69 MU_OUTBOUND_DOORBELL_HASEVENT
= 16,
72 MU_STATE_STARTING
= 1,
73 MU_STATE_FMU_READY_FOR_HANDSHAKE
= 2,
74 MU_STATE_SEND_HANDSHAKE_FRAME
= 3,
76 MU_STATE_RESETTING
= 5,
79 MU_HANDSHAKE_SIGNATURE
= 0x55aaaa55,
80 MU_HANDSHAKE_SIGNATURE_HALF
= 0x5a5a0000,
81 MU_HARD_RESET_WAIT
= 30000,
84 /* firmware returned values */
85 SRB_STATUS_SUCCESS
= 0x01,
86 SRB_STATUS_ERROR
= 0x04,
87 SRB_STATUS_BUSY
= 0x05,
88 SRB_STATUS_INVALID_REQUEST
= 0x06,
89 SRB_STATUS_SELECTION_TIMEOUT
= 0x0A,
93 TASK_ATTRIBUTE_SIMPLE
= 0x0,
94 TASK_ATTRIBUTE_HEADOFQUEUE
= 0x1,
95 TASK_ATTRIBUTE_ORDERED
= 0x2,
96 TASK_ATTRIBUTE_ACA
= 0x4,
98 /* request count, etc. */
101 /* one message wasted, use MU_MAX_REQUEST+1
102 to handle MU_MAX_REQUEST messages */
103 MU_REQ_COUNT
= (MU_MAX_REQUEST
+ 1),
104 MU_STATUS_COUNT
= (MU_MAX_REQUEST
+ 1),
106 STEX_CDB_LENGTH
= MAX_COMMAND_SIZE
,
107 REQ_VARIABLE_LEN
= 1024,
108 STATUS_VAR_LEN
= 128,
109 ST_CAN_QUEUE
= MU_MAX_REQUEST
,
110 ST_CMD_PER_LUN
= MU_MAX_REQUEST
,
114 SG_CF_EOT
= 0x80, /* end of table */
115 SG_CF_64B
= 0x40, /* 64 bit item */
116 SG_CF_HOST
= 0x20, /* sg in host memory */
123 PASSTHRU_REQ_TYPE
= 0x00000001,
124 PASSTHRU_REQ_NO_WAKEUP
= 0x00000100,
125 ST_INTERNAL_TIMEOUT
= 30,
130 /* vendor specific commands of Promise */
132 SINBAND_MGT_CMD
= 0xd9,
134 CONTROLLER_CMD
= 0xe1,
135 DEBUGGING_CMD
= 0xe2,
138 PASSTHRU_GET_ADAPTER
= 0x05,
139 PASSTHRU_GET_DRVVER
= 0x10,
141 CTLR_CONFIG_CMD
= 0x03,
142 CTLR_SHUTDOWN
= 0x0d,
144 CTLR_POWER_STATE_CHANGE
= 0x0e,
145 CTLR_POWER_SAVING
= 0x01,
147 PASSTHRU_SIGNATURE
= 0x4e415041,
148 MGT_CMD_SIGNATURE
= 0xba,
152 ST_ADDITIONAL_MEM
= 0x200000,
155 /* SCSI inquiry data */
156 typedef struct st_inq
{
158 u8 DeviceTypeQualifier
:3;
159 u8 DeviceTypeModifier
:7;
160 u8 RemovableMedia
:1;
162 u8 ResponseDataFormat
:4;
172 u8 LinkedCommands
:1;
176 u8 RelativeAddressing
:1;
179 u8 ProductRevisionLevel
[4];
180 u8 VendorSpecific
[20];
185 u8 ctrl
; /* SG_CF_xxx */
196 struct st_sgitem table
[ST_MAX_SG
];
199 struct handshake_frame
{
200 __le32 rb_phy
; /* request payload queue physical address */
202 __le16 req_sz
; /* size of each request payload */
203 __le16 req_cnt
; /* count of reqs the buffer can hold */
204 __le16 status_sz
; /* size of each status payload */
205 __le16 status_cnt
; /* count of status the buffer can hold */
206 __le32 hosttime
; /* seconds from Jan 1, 1970 (GMT) */
208 u8 partner_type
; /* who sends this frame */
210 __le32 partner_ver_major
;
211 __le32 partner_ver_minor
;
212 __le32 partner_ver_oem
;
213 __le32 partner_ver_build
;
214 __le32 extra_offset
; /* NEW */
215 __le32 extra_size
; /* NEW */
226 u8 payload_sz
; /* payload size in 4-byte, not used */
227 u8 cdb
[STEX_CDB_LENGTH
];
228 u8 variable
[REQ_VARIABLE_LEN
];
238 u8 payload_sz
; /* payload size in 4-byte */
239 u8 variable
[STATUS_VAR_LEN
];
254 struct ver_info drv_ver
;
255 struct ver_info bios_ver
;
284 #define MU_REQ_BUFFER_SIZE (MU_REQ_COUNT * sizeof(struct req_msg))
285 #define MU_STATUS_BUFFER_SIZE (MU_STATUS_COUNT * sizeof(struct status_msg))
286 #define MU_BUFFER_SIZE (MU_REQ_BUFFER_SIZE + MU_STATUS_BUFFER_SIZE)
287 #define STEX_EXTRA_SIZE max(sizeof(struct st_frame), sizeof(ST_INQ))
288 #define STEX_BUFFER_SIZE (MU_BUFFER_SIZE + STEX_EXTRA_SIZE)
292 struct scsi_cmnd
*cmd
;
295 unsigned int sense_bufflen
;
304 void __iomem
*mmio_base
; /* iomapped PCI memory space */
306 dma_addr_t dma_handle
;
309 struct Scsi_Host
*host
;
310 struct pci_dev
*pdev
;
317 struct status_msg
*status_buffer
;
318 void *copy_buffer
; /* temp buffer for driver-handled commands */
319 struct st_ccb ccb
[MU_MAX_REQUEST
];
320 struct st_ccb
*wait_ccb
;
321 wait_queue_head_t waitq
;
323 unsigned int mu_status
;
326 unsigned int cardtype
;
329 static const char console_inq_page
[] =
331 0x03,0x00,0x03,0x03,0xFA,0x00,0x00,0x30,
332 0x50,0x72,0x6F,0x6D,0x69,0x73,0x65,0x20, /* "Promise " */
333 0x52,0x41,0x49,0x44,0x20,0x43,0x6F,0x6E, /* "RAID Con" */
334 0x73,0x6F,0x6C,0x65,0x20,0x20,0x20,0x20, /* "sole " */
335 0x31,0x2E,0x30,0x30,0x20,0x20,0x20,0x20, /* "1.00 " */
336 0x53,0x58,0x2F,0x52,0x53,0x41,0x46,0x2D, /* "SX/RSAF-" */
337 0x54,0x45,0x31,0x2E,0x30,0x30,0x20,0x20, /* "TE1.00 " */
338 0x0C,0x20,0x20,0x20,0x20,0x20,0x20,0x20
341 MODULE_AUTHOR("Ed Lin");
342 MODULE_DESCRIPTION("Promise Technology SuperTrak EX Controllers");
343 MODULE_LICENSE("GPL");
344 MODULE_VERSION(ST_DRIVER_VERSION
);
346 static void stex_gettime(__le32
*time
)
349 do_gettimeofday(&tv
);
351 *time
= cpu_to_le32(tv
.tv_sec
& 0xffffffff);
352 *(time
+ 1) = cpu_to_le32((tv
.tv_sec
>> 16) >> 16);
355 static struct status_msg
*stex_get_status(struct st_hba
*hba
)
357 struct status_msg
*status
=
358 hba
->status_buffer
+ hba
->status_tail
;
361 hba
->status_tail
%= MU_STATUS_COUNT
;
366 static void stex_invalid_field(struct scsi_cmnd
*cmd
,
367 void (*done
)(struct scsi_cmnd
*))
369 cmd
->result
= (DRIVER_SENSE
<< 24) | SAM_STAT_CHECK_CONDITION
;
371 /* "Invalid field in cbd" */
372 scsi_build_sense_buffer(0, cmd
->sense_buffer
, ILLEGAL_REQUEST
, 0x24,
377 static struct req_msg
*stex_alloc_req(struct st_hba
*hba
)
379 struct req_msg
*req
= ((struct req_msg
*)hba
->dma_mem
) +
383 hba
->req_head
%= MU_REQ_COUNT
;
388 static int stex_map_sg(struct st_hba
*hba
,
389 struct req_msg
*req
, struct st_ccb
*ccb
)
391 struct scsi_cmnd
*cmd
;
392 struct scatterlist
*sg
;
393 struct st_sgtable
*dst
;
397 dst
= (struct st_sgtable
*)req
->variable
;
398 dst
->max_sg_count
= cpu_to_le16(ST_MAX_SG
);
399 dst
->sz_in_byte
= cpu_to_le32(scsi_bufflen(cmd
));
401 nseg
= scsi_dma_map(cmd
);
405 ccb
->sg_count
= nseg
;
406 dst
->sg_count
= cpu_to_le16((u16
)nseg
);
408 scsi_for_each_sg(cmd
, sg
, nseg
, i
) {
409 dst
->table
[i
].count
= cpu_to_le32((u32
)sg_dma_len(sg
));
411 cpu_to_le32(sg_dma_address(sg
) & 0xffffffff);
412 dst
->table
[i
].addr_hi
=
413 cpu_to_le32((sg_dma_address(sg
) >> 16) >> 16);
414 dst
->table
[i
].ctrl
= SG_CF_64B
| SG_CF_HOST
;
416 dst
->table
[--i
].ctrl
|= SG_CF_EOT
;
422 static void stex_controller_info(struct st_hba
*hba
, struct st_ccb
*ccb
)
425 size_t count
= sizeof(struct st_frame
);
427 p
= hba
->copy_buffer
;
428 count
= scsi_sg_copy_to_buffer(ccb
->cmd
, p
, count
);
429 memset(p
->base
, 0, sizeof(u32
)*6);
430 *(unsigned long *)(p
->base
) = pci_resource_start(hba
->pdev
, 0);
433 p
->drv_ver
.major
= ST_VER_MAJOR
;
434 p
->drv_ver
.minor
= ST_VER_MINOR
;
435 p
->drv_ver
.oem
= ST_OEM
;
436 p
->drv_ver
.build
= ST_BUILD_VER
;
438 p
->bus
= hba
->pdev
->bus
->number
;
439 p
->slot
= hba
->pdev
->devfn
;
441 p
->irq_vec
= hba
->pdev
->irq
;
442 p
->id
= hba
->pdev
->vendor
<< 16 | hba
->pdev
->device
;
444 hba
->pdev
->subsystem_vendor
<< 16 | hba
->pdev
->subsystem_device
;
446 count
= scsi_sg_copy_from_buffer(ccb
->cmd
, p
, count
);
450 stex_send_cmd(struct st_hba
*hba
, struct req_msg
*req
, u16 tag
)
452 req
->tag
= cpu_to_le16(tag
);
453 req
->task_attr
= TASK_ATTRIBUTE_SIMPLE
;
454 req
->task_manage
= 0; /* not supported yet */
456 hba
->ccb
[tag
].req
= req
;
459 writel(hba
->req_head
, hba
->mmio_base
+ IMR0
);
460 writel(MU_INBOUND_DOORBELL_REQHEADCHANGED
, hba
->mmio_base
+ IDBL
);
461 readl(hba
->mmio_base
+ IDBL
); /* flush */
465 stex_slave_alloc(struct scsi_device
*sdev
)
467 /* Cheat: usually extracted from Inquiry data */
468 sdev
->tagged_supported
= 1;
470 scsi_activate_tcq(sdev
, sdev
->host
->can_queue
);
476 stex_slave_config(struct scsi_device
*sdev
)
478 sdev
->use_10_for_rw
= 1;
479 sdev
->use_10_for_ms
= 1;
480 sdev
->timeout
= 60 * HZ
;
481 sdev
->tagged_supported
= 1;
487 stex_slave_destroy(struct scsi_device
*sdev
)
489 scsi_deactivate_tcq(sdev
, 1);
493 stex_queuecommand(struct scsi_cmnd
*cmd
, void (* done
)(struct scsi_cmnd
*))
496 struct Scsi_Host
*host
;
500 host
= cmd
->device
->host
;
501 id
= cmd
->device
->id
;
502 lun
= cmd
->device
->lun
;
503 hba
= (struct st_hba
*) &host
->hostdata
[0];
505 switch (cmd
->cmnd
[0]) {
508 static char ms10_caching_page
[12] =
509 { 0, 0x12, 0, 0, 0, 0, 0, 0, 0x8, 0xa, 0x4, 0 };
511 page
= cmd
->cmnd
[2] & 0x3f;
512 if (page
== 0x8 || page
== 0x3f) {
513 scsi_sg_copy_from_buffer(cmd
, ms10_caching_page
,
514 sizeof(ms10_caching_page
));
515 cmd
->result
= DID_OK
<< 16 | COMMAND_COMPLETE
<< 8;
518 stex_invalid_field(cmd
, done
);
523 * The shasta firmware does not report actual luns in the
524 * target, so fail the command to force sequential lun scan.
525 * Also, the console device does not support this command.
527 if (hba
->cardtype
== st_shasta
|| id
== host
->max_id
- 1) {
528 stex_invalid_field(cmd
, done
);
532 case TEST_UNIT_READY
:
533 if (id
== host
->max_id
- 1) {
534 cmd
->result
= DID_OK
<< 16 | COMMAND_COMPLETE
<< 8;
540 if (id
!= host
->max_id
- 1)
542 if (lun
== 0 && (cmd
->cmnd
[1] & INQUIRY_EVPD
) == 0) {
543 scsi_sg_copy_from_buffer(cmd
, (void *)console_inq_page
,
544 sizeof(console_inq_page
));
545 cmd
->result
= DID_OK
<< 16 | COMMAND_COMPLETE
<< 8;
548 stex_invalid_field(cmd
, done
);
551 if (cmd
->cmnd
[1] == PASSTHRU_GET_DRVVER
) {
552 struct st_drvver ver
;
553 size_t cp_len
= sizeof(ver
);
554 ver
.major
= ST_VER_MAJOR
;
555 ver
.minor
= ST_VER_MINOR
;
557 ver
.build
= ST_BUILD_VER
;
558 ver
.signature
[0] = PASSTHRU_SIGNATURE
;
559 ver
.console_id
= host
->max_id
- 1;
560 ver
.host_no
= hba
->host
->host_no
;
561 cp_len
= scsi_sg_copy_from_buffer(cmd
, &ver
, cp_len
);
562 cmd
->result
= sizeof(ver
) == cp_len
?
563 DID_OK
<< 16 | COMMAND_COMPLETE
<< 8 :
564 DID_ERROR
<< 16 | COMMAND_COMPLETE
<< 8;
572 cmd
->scsi_done
= done
;
574 tag
= cmd
->request
->tag
;
576 if (unlikely(tag
>= host
->can_queue
))
577 return SCSI_MLQUEUE_HOST_BUSY
;
579 req
= stex_alloc_req(hba
);
585 memcpy(req
->cdb
, cmd
->cmnd
, STEX_CDB_LENGTH
);
587 hba
->ccb
[tag
].cmd
= cmd
;
588 hba
->ccb
[tag
].sense_bufflen
= SCSI_SENSE_BUFFERSIZE
;
589 hba
->ccb
[tag
].sense_buffer
= cmd
->sense_buffer
;
590 hba
->ccb
[tag
].req_type
= 0;
592 if (cmd
->sc_data_direction
!= DMA_NONE
)
593 stex_map_sg(hba
, req
, &hba
->ccb
[tag
]);
595 stex_send_cmd(hba
, req
, tag
);
599 static void stex_scsi_done(struct st_ccb
*ccb
)
601 struct scsi_cmnd
*cmd
= ccb
->cmd
;
604 if (ccb
->srb_status
== SRB_STATUS_SUCCESS
|| ccb
->srb_status
== 0) {
605 result
= ccb
->scsi_status
;
606 switch (ccb
->scsi_status
) {
608 result
|= DID_OK
<< 16 | COMMAND_COMPLETE
<< 8;
610 case SAM_STAT_CHECK_CONDITION
:
611 result
|= DRIVER_SENSE
<< 24;
614 result
|= DID_BUS_BUSY
<< 16 | COMMAND_COMPLETE
<< 8;
617 result
|= DID_ERROR
<< 16 | COMMAND_COMPLETE
<< 8;
621 else if (ccb
->srb_status
& SRB_SEE_SENSE
)
622 result
= DRIVER_SENSE
<< 24 | SAM_STAT_CHECK_CONDITION
;
623 else switch (ccb
->srb_status
) {
624 case SRB_STATUS_SELECTION_TIMEOUT
:
625 result
= DID_NO_CONNECT
<< 16 | COMMAND_COMPLETE
<< 8;
627 case SRB_STATUS_BUSY
:
628 result
= DID_BUS_BUSY
<< 16 | COMMAND_COMPLETE
<< 8;
630 case SRB_STATUS_INVALID_REQUEST
:
631 case SRB_STATUS_ERROR
:
633 result
= DID_ERROR
<< 16 | COMMAND_COMPLETE
<< 8;
637 cmd
->result
= result
;
641 static void stex_copy_data(struct st_ccb
*ccb
,
642 struct status_msg
*resp
, unsigned int variable
)
644 size_t count
= variable
;
645 if (resp
->scsi_status
!= SAM_STAT_GOOD
) {
646 if (ccb
->sense_buffer
!= NULL
)
647 memcpy(ccb
->sense_buffer
, resp
->variable
,
648 min(variable
, ccb
->sense_bufflen
));
652 if (ccb
->cmd
== NULL
)
654 count
= scsi_sg_copy_from_buffer(ccb
->cmd
, resp
->variable
, count
);
657 static void stex_ys_commands(struct st_hba
*hba
,
658 struct st_ccb
*ccb
, struct status_msg
*resp
)
660 if (ccb
->cmd
->cmnd
[0] == MGT_CMD
&&
661 resp
->scsi_status
!= SAM_STAT_CHECK_CONDITION
) {
662 scsi_set_resid(ccb
->cmd
, scsi_bufflen(ccb
->cmd
) -
663 le32_to_cpu(*(__le32
*)&resp
->variable
[0]));
667 if (resp
->srb_status
!= 0)
670 /* determine inquiry command status by DeviceTypeQualifier */
671 if (ccb
->cmd
->cmnd
[0] == INQUIRY
&&
672 resp
->scsi_status
== SAM_STAT_GOOD
) {
675 scsi_sg_copy_to_buffer(ccb
->cmd
, hba
->copy_buffer
,
677 inq_data
= (ST_INQ
*)hba
->copy_buffer
;
678 if (inq_data
->DeviceTypeQualifier
!= 0)
679 ccb
->srb_status
= SRB_STATUS_SELECTION_TIMEOUT
;
681 ccb
->srb_status
= SRB_STATUS_SUCCESS
;
685 static void stex_mu_intr(struct st_hba
*hba
, u32 doorbell
)
687 void __iomem
*base
= hba
->mmio_base
;
688 struct status_msg
*resp
;
693 if (!(doorbell
& MU_OUTBOUND_DOORBELL_STATUSHEADCHANGED
))
696 /* status payloads */
697 hba
->status_head
= readl(base
+ OMR1
);
698 if (unlikely(hba
->status_head
>= MU_STATUS_COUNT
)) {
699 printk(KERN_WARNING DRV_NAME
"(%s): invalid status head\n",
700 pci_name(hba
->pdev
));
705 * it's not a valid status payload if:
706 * 1. there are no pending requests(e.g. during init stage)
707 * 2. there are some pending requests, but the controller is in
708 * reset status, and its type is not st_yosemite
709 * firmware of st_yosemite in reset status will return pending requests
710 * to driver, so we allow it to pass
712 if (unlikely(hba
->out_req_cnt
<= 0 ||
713 (hba
->mu_status
== MU_STATE_RESETTING
&&
714 hba
->cardtype
!= st_yosemite
))) {
715 hba
->status_tail
= hba
->status_head
;
719 while (hba
->status_tail
!= hba
->status_head
) {
720 resp
= stex_get_status(hba
);
721 tag
= le16_to_cpu(resp
->tag
);
722 if (unlikely(tag
>= hba
->host
->can_queue
)) {
723 printk(KERN_WARNING DRV_NAME
724 "(%s): invalid tag\n", pci_name(hba
->pdev
));
728 ccb
= &hba
->ccb
[tag
];
729 if (hba
->wait_ccb
== ccb
)
730 hba
->wait_ccb
= NULL
;
731 if (unlikely(ccb
->req
== NULL
)) {
732 printk(KERN_WARNING DRV_NAME
733 "(%s): lagging req\n", pci_name(hba
->pdev
));
738 size
= resp
->payload_sz
* sizeof(u32
); /* payload size */
739 if (unlikely(size
< sizeof(*resp
) - STATUS_VAR_LEN
||
740 size
> sizeof(*resp
))) {
741 printk(KERN_WARNING DRV_NAME
"(%s): bad status size\n",
742 pci_name(hba
->pdev
));
744 size
-= sizeof(*resp
) - STATUS_VAR_LEN
; /* copy size */
746 stex_copy_data(ccb
, resp
, size
);
749 ccb
->srb_status
= resp
->srb_status
;
750 ccb
->scsi_status
= resp
->scsi_status
;
752 if (likely(ccb
->cmd
!= NULL
)) {
753 if (hba
->cardtype
== st_yosemite
)
754 stex_ys_commands(hba
, ccb
, resp
);
756 if (unlikely(ccb
->cmd
->cmnd
[0] == PASSTHRU_CMD
&&
757 ccb
->cmd
->cmnd
[1] == PASSTHRU_GET_ADAPTER
))
758 stex_controller_info(hba
, ccb
);
760 scsi_dma_unmap(ccb
->cmd
);
763 } else if (ccb
->req_type
& PASSTHRU_REQ_TYPE
) {
765 if (ccb
->req_type
& PASSTHRU_REQ_NO_WAKEUP
) {
770 if (waitqueue_active(&hba
->waitq
))
771 wake_up(&hba
->waitq
);
776 writel(hba
->status_head
, base
+ IMR1
);
777 readl(base
+ IMR1
); /* flush */
780 static irqreturn_t
stex_intr(int irq
, void *__hba
)
782 struct st_hba
*hba
= __hba
;
783 void __iomem
*base
= hba
->mmio_base
;
788 spin_lock_irqsave(hba
->host
->host_lock
, flags
);
790 data
= readl(base
+ ODBL
);
792 if (data
&& data
!= 0xffffffff) {
793 /* clear the interrupt */
794 writel(data
, base
+ ODBL
);
795 readl(base
+ ODBL
); /* flush */
796 stex_mu_intr(hba
, data
);
800 spin_unlock_irqrestore(hba
->host
->host_lock
, flags
);
802 return IRQ_RETVAL(handled
);
805 static int stex_handshake(struct st_hba
*hba
)
807 void __iomem
*base
= hba
->mmio_base
;
808 struct handshake_frame
*h
;
809 dma_addr_t status_phys
;
811 unsigned long before
;
813 if (readl(base
+ OMR0
) != MU_HANDSHAKE_SIGNATURE
) {
814 writel(MU_INBOUND_DOORBELL_HANDSHAKE
, base
+ IDBL
);
817 while (readl(base
+ OMR0
) != MU_HANDSHAKE_SIGNATURE
) {
818 if (time_after(jiffies
, before
+ MU_MAX_DELAY
* HZ
)) {
819 printk(KERN_ERR DRV_NAME
820 "(%s): no handshake signature\n",
821 pci_name(hba
->pdev
));
831 data
= readl(base
+ OMR1
);
832 if ((data
& 0xffff0000) == MU_HANDSHAKE_SIGNATURE_HALF
) {
834 if (hba
->host
->can_queue
> data
)
835 hba
->host
->can_queue
= data
;
838 h
= (struct handshake_frame
*)(hba
->dma_mem
+ MU_REQ_BUFFER_SIZE
);
839 h
->rb_phy
= cpu_to_le32(hba
->dma_handle
);
840 h
->rb_phy_hi
= cpu_to_le32((hba
->dma_handle
>> 16) >> 16);
841 h
->req_sz
= cpu_to_le16(sizeof(struct req_msg
));
842 h
->req_cnt
= cpu_to_le16(MU_REQ_COUNT
);
843 h
->status_sz
= cpu_to_le16(sizeof(struct status_msg
));
844 h
->status_cnt
= cpu_to_le16(MU_STATUS_COUNT
);
845 stex_gettime(&h
->hosttime
);
846 h
->partner_type
= HMU_PARTNER_TYPE
;
847 if (hba
->dma_size
> STEX_BUFFER_SIZE
) {
848 h
->extra_offset
= cpu_to_le32(STEX_BUFFER_SIZE
);
849 h
->extra_size
= cpu_to_le32(ST_ADDITIONAL_MEM
);
851 h
->extra_offset
= h
->extra_size
= 0;
853 status_phys
= hba
->dma_handle
+ MU_REQ_BUFFER_SIZE
;
854 writel(status_phys
, base
+ IMR0
);
856 writel((status_phys
>> 16) >> 16, base
+ IMR1
);
859 writel((status_phys
>> 16) >> 16, base
+ OMR0
); /* old fw compatible */
861 writel(MU_INBOUND_DOORBELL_HANDSHAKE
, base
+ IDBL
);
862 readl(base
+ IDBL
); /* flush */
866 while (readl(base
+ OMR0
) != MU_HANDSHAKE_SIGNATURE
) {
867 if (time_after(jiffies
, before
+ MU_MAX_DELAY
* HZ
)) {
868 printk(KERN_ERR DRV_NAME
869 "(%s): no signature after handshake frame\n",
870 pci_name(hba
->pdev
));
877 writel(0, base
+ IMR0
);
879 writel(0, base
+ OMR0
);
881 writel(0, base
+ IMR1
);
883 writel(0, base
+ OMR1
);
884 readl(base
+ OMR1
); /* flush */
885 hba
->mu_status
= MU_STATE_STARTED
;
889 static int stex_abort(struct scsi_cmnd
*cmd
)
891 struct Scsi_Host
*host
= cmd
->device
->host
;
892 struct st_hba
*hba
= (struct st_hba
*)host
->hostdata
;
893 u16 tag
= cmd
->request
->tag
;
896 int result
= SUCCESS
;
899 printk(KERN_INFO DRV_NAME
900 "(%s): aborting command\n", pci_name(hba
->pdev
));
901 scsi_print_command(cmd
);
903 base
= hba
->mmio_base
;
904 spin_lock_irqsave(host
->host_lock
, flags
);
905 if (tag
< host
->can_queue
&& hba
->ccb
[tag
].cmd
== cmd
)
906 hba
->wait_ccb
= &hba
->ccb
[tag
];
908 for (tag
= 0; tag
< host
->can_queue
; tag
++)
909 if (hba
->ccb
[tag
].cmd
== cmd
) {
910 hba
->wait_ccb
= &hba
->ccb
[tag
];
913 if (tag
>= host
->can_queue
)
917 data
= readl(base
+ ODBL
);
918 if (data
== 0 || data
== 0xffffffff)
921 writel(data
, base
+ ODBL
);
922 readl(base
+ ODBL
); /* flush */
924 stex_mu_intr(hba
, data
);
926 if (hba
->wait_ccb
== NULL
) {
927 printk(KERN_WARNING DRV_NAME
928 "(%s): lost interrupt\n", pci_name(hba
->pdev
));
934 hba
->wait_ccb
->req
= NULL
; /* nullify the req's future return */
935 hba
->wait_ccb
= NULL
;
938 spin_unlock_irqrestore(host
->host_lock
, flags
);
942 static void stex_hard_reset(struct st_hba
*hba
)
949 for (i
= 0; i
< 16; i
++)
950 pci_read_config_dword(hba
->pdev
, i
* 4,
951 &hba
->pdev
->saved_config_space
[i
]);
953 /* Reset secondary bus. Our controller(MU/ATU) is the only device on
954 secondary bus. Consult Intel 80331/3 developer's manual for detail */
955 bus
= hba
->pdev
->bus
;
956 pci_read_config_byte(bus
->self
, PCI_BRIDGE_CONTROL
, &pci_bctl
);
957 pci_bctl
|= PCI_BRIDGE_CTL_BUS_RESET
;
958 pci_write_config_byte(bus
->self
, PCI_BRIDGE_CONTROL
, pci_bctl
);
961 * 1 ms may be enough for 8-port controllers. But 16-port controllers
962 * require more time to finish bus reset. Use 100 ms here for safety
965 pci_bctl
&= ~PCI_BRIDGE_CTL_BUS_RESET
;
966 pci_write_config_byte(bus
->self
, PCI_BRIDGE_CONTROL
, pci_bctl
);
968 for (i
= 0; i
< MU_HARD_RESET_WAIT
; i
++) {
969 pci_read_config_word(hba
->pdev
, PCI_COMMAND
, &pci_cmd
);
970 if (pci_cmd
!= 0xffff && (pci_cmd
& PCI_COMMAND_MASTER
))
976 for (i
= 0; i
< 16; i
++)
977 pci_write_config_dword(hba
->pdev
, i
* 4,
978 hba
->pdev
->saved_config_space
[i
]);
981 static int stex_reset(struct scsi_cmnd
*cmd
)
985 unsigned long before
;
986 hba
= (struct st_hba
*) &cmd
->device
->host
->hostdata
[0];
988 printk(KERN_INFO DRV_NAME
989 "(%s): resetting host\n", pci_name(hba
->pdev
));
990 scsi_print_command(cmd
);
992 hba
->mu_status
= MU_STATE_RESETTING
;
994 if (hba
->cardtype
== st_shasta
)
995 stex_hard_reset(hba
);
997 if (hba
->cardtype
!= st_yosemite
) {
998 if (stex_handshake(hba
)) {
999 printk(KERN_WARNING DRV_NAME
1000 "(%s): resetting: handshake failed\n",
1001 pci_name(hba
->pdev
));
1004 spin_lock_irqsave(hba
->host
->host_lock
, flags
);
1007 hba
->status_head
= 0;
1008 hba
->status_tail
= 0;
1009 hba
->out_req_cnt
= 0;
1010 spin_unlock_irqrestore(hba
->host
->host_lock
, flags
);
1015 writel(MU_INBOUND_DOORBELL_RESET
, hba
->mmio_base
+ IDBL
);
1016 readl(hba
->mmio_base
+ IDBL
); /* flush */
1018 while (hba
->out_req_cnt
> 0) {
1019 if (time_after(jiffies
, before
+ ST_INTERNAL_TIMEOUT
* HZ
)) {
1020 printk(KERN_WARNING DRV_NAME
1021 "(%s): reset timeout\n", pci_name(hba
->pdev
));
1027 hba
->mu_status
= MU_STATE_STARTED
;
1031 static int stex_biosparam(struct scsi_device
*sdev
,
1032 struct block_device
*bdev
, sector_t capacity
, int geom
[])
1034 int heads
= 255, sectors
= 63;
1036 if (capacity
< 0x200000) {
1041 sector_div(capacity
, heads
* sectors
);
1050 static struct scsi_host_template driver_template
= {
1051 .module
= THIS_MODULE
,
1053 .proc_name
= DRV_NAME
,
1054 .bios_param
= stex_biosparam
,
1055 .queuecommand
= stex_queuecommand
,
1056 .slave_alloc
= stex_slave_alloc
,
1057 .slave_configure
= stex_slave_config
,
1058 .slave_destroy
= stex_slave_destroy
,
1059 .eh_abort_handler
= stex_abort
,
1060 .eh_host_reset_handler
= stex_reset
,
1061 .can_queue
= ST_CAN_QUEUE
,
1063 .sg_tablesize
= ST_MAX_SG
,
1064 .cmd_per_lun
= ST_CMD_PER_LUN
,
1067 static int stex_set_dma_mask(struct pci_dev
* pdev
)
1070 if (!pci_set_dma_mask(pdev
, DMA_64BIT_MASK
)
1071 && !pci_set_consistent_dma_mask(pdev
, DMA_64BIT_MASK
))
1073 ret
= pci_set_dma_mask(pdev
, DMA_32BIT_MASK
);
1075 ret
= pci_set_consistent_dma_mask(pdev
, DMA_32BIT_MASK
);
1079 static int __devinit
1080 stex_probe(struct pci_dev
*pdev
, const struct pci_device_id
*id
)
1083 struct Scsi_Host
*host
;
1086 err
= pci_enable_device(pdev
);
1090 pci_set_master(pdev
);
1092 host
= scsi_host_alloc(&driver_template
, sizeof(struct st_hba
));
1095 printk(KERN_ERR DRV_NAME
"(%s): scsi_host_alloc failed\n",
1101 hba
= (struct st_hba
*)host
->hostdata
;
1102 memset(hba
, 0, sizeof(struct st_hba
));
1104 err
= pci_request_regions(pdev
, DRV_NAME
);
1106 printk(KERN_ERR DRV_NAME
"(%s): request regions failed\n",
1108 goto out_scsi_host_put
;
1111 hba
->mmio_base
= ioremap_nocache(pci_resource_start(pdev
, 0),
1112 pci_resource_len(pdev
, 0));
1113 if ( !hba
->mmio_base
) {
1114 printk(KERN_ERR DRV_NAME
"(%s): memory map failed\n",
1117 goto out_release_regions
;
1120 err
= stex_set_dma_mask(pdev
);
1122 printk(KERN_ERR DRV_NAME
"(%s): set dma mask failed\n",
1127 hba
->cardtype
= (unsigned int) id
->driver_data
;
1128 if (hba
->cardtype
== st_vsc
&& (pdev
->subsystem_device
& 0xf) == 0x1)
1129 hba
->cardtype
= st_vsc1
;
1130 hba
->dma_size
= (hba
->cardtype
== st_vsc1
) ?
1131 (STEX_BUFFER_SIZE
+ ST_ADDITIONAL_MEM
) : (STEX_BUFFER_SIZE
);
1132 hba
->dma_mem
= dma_alloc_coherent(&pdev
->dev
,
1133 hba
->dma_size
, &hba
->dma_handle
, GFP_KERNEL
);
1134 if (!hba
->dma_mem
) {
1136 printk(KERN_ERR DRV_NAME
"(%s): dma mem alloc failed\n",
1141 hba
->status_buffer
=
1142 (struct status_msg
*)(hba
->dma_mem
+ MU_REQ_BUFFER_SIZE
);
1143 hba
->copy_buffer
= hba
->dma_mem
+ MU_BUFFER_SIZE
;
1144 hba
->mu_status
= MU_STATE_STARTING
;
1146 if (hba
->cardtype
== st_shasta
) {
1148 host
->max_id
= 16 + 1;
1149 } else if (hba
->cardtype
== st_yosemite
) {
1150 host
->max_lun
= 128;
1151 host
->max_id
= 1 + 1;
1153 /* st_vsc and st_vsc1 */
1155 host
->max_id
= 128 + 1;
1157 host
->max_channel
= 0;
1158 host
->unique_id
= host
->host_no
;
1159 host
->max_cmd_len
= STEX_CDB_LENGTH
;
1163 init_waitqueue_head(&hba
->waitq
);
1165 err
= request_irq(pdev
->irq
, stex_intr
, IRQF_SHARED
, DRV_NAME
, hba
);
1167 printk(KERN_ERR DRV_NAME
"(%s): request irq failed\n",
1172 err
= stex_handshake(hba
);
1176 err
= scsi_init_shared_tag_map(host
, host
->can_queue
);
1178 printk(KERN_ERR DRV_NAME
"(%s): init shared queue failed\n",
1183 pci_set_drvdata(pdev
, hba
);
1185 err
= scsi_add_host(host
, &pdev
->dev
);
1187 printk(KERN_ERR DRV_NAME
"(%s): scsi_add_host failed\n",
1192 scsi_scan_host(host
);
1197 free_irq(pdev
->irq
, hba
);
1199 dma_free_coherent(&pdev
->dev
, hba
->dma_size
,
1200 hba
->dma_mem
, hba
->dma_handle
);
1202 iounmap(hba
->mmio_base
);
1203 out_release_regions
:
1204 pci_release_regions(pdev
);
1206 scsi_host_put(host
);
1208 pci_disable_device(pdev
);
1213 static void stex_hba_stop(struct st_hba
*hba
)
1215 struct req_msg
*req
;
1216 unsigned long flags
;
1217 unsigned long before
;
1220 spin_lock_irqsave(hba
->host
->host_lock
, flags
);
1221 req
= stex_alloc_req(hba
);
1222 memset(req
->cdb
, 0, STEX_CDB_LENGTH
);
1224 if (hba
->cardtype
== st_yosemite
) {
1225 req
->cdb
[0] = MGT_CMD
;
1226 req
->cdb
[1] = MGT_CMD_SIGNATURE
;
1227 req
->cdb
[2] = CTLR_CONFIG_CMD
;
1228 req
->cdb
[3] = CTLR_SHUTDOWN
;
1230 req
->cdb
[0] = CONTROLLER_CMD
;
1231 req
->cdb
[1] = CTLR_POWER_STATE_CHANGE
;
1232 req
->cdb
[2] = CTLR_POWER_SAVING
;
1235 hba
->ccb
[tag
].cmd
= NULL
;
1236 hba
->ccb
[tag
].sg_count
= 0;
1237 hba
->ccb
[tag
].sense_bufflen
= 0;
1238 hba
->ccb
[tag
].sense_buffer
= NULL
;
1239 hba
->ccb
[tag
].req_type
|= PASSTHRU_REQ_TYPE
;
1241 stex_send_cmd(hba
, req
, tag
);
1242 spin_unlock_irqrestore(hba
->host
->host_lock
, flags
);
1245 while (hba
->ccb
[tag
].req_type
& PASSTHRU_REQ_TYPE
) {
1246 if (time_after(jiffies
, before
+ ST_INTERNAL_TIMEOUT
* HZ
))
1252 static void stex_hba_free(struct st_hba
*hba
)
1254 free_irq(hba
->pdev
->irq
, hba
);
1256 iounmap(hba
->mmio_base
);
1258 pci_release_regions(hba
->pdev
);
1260 dma_free_coherent(&hba
->pdev
->dev
, hba
->dma_size
,
1261 hba
->dma_mem
, hba
->dma_handle
);
1264 static void stex_remove(struct pci_dev
*pdev
)
1266 struct st_hba
*hba
= pci_get_drvdata(pdev
);
1268 scsi_remove_host(hba
->host
);
1270 pci_set_drvdata(pdev
, NULL
);
1276 scsi_host_put(hba
->host
);
1278 pci_disable_device(pdev
);
1281 static void stex_shutdown(struct pci_dev
*pdev
)
1283 struct st_hba
*hba
= pci_get_drvdata(pdev
);
1288 static struct pci_device_id stex_pci_tbl
[] = {
1290 { 0x105a, 0x8350, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
1291 st_shasta
}, /* SuperTrak EX8350/8300/16350/16300 */
1292 { 0x105a, 0xc350, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
1293 st_shasta
}, /* SuperTrak EX12350 */
1294 { 0x105a, 0x4302, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
1295 st_shasta
}, /* SuperTrak EX4350 */
1296 { 0x105a, 0xe350, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
1297 st_shasta
}, /* SuperTrak EX24350 */
1300 { 0x105a, 0x7250, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0, st_vsc
},
1303 { 0x105a, 0x8650, PCI_ANY_ID
, 0x4600, 0, 0,
1304 st_yosemite
}, /* SuperTrak EX4650 */
1305 { 0x105a, 0x8650, PCI_ANY_ID
, 0x4610, 0, 0,
1306 st_yosemite
}, /* SuperTrak EX4650o */
1307 { 0x105a, 0x8650, PCI_ANY_ID
, 0x8600, 0, 0,
1308 st_yosemite
}, /* SuperTrak EX8650EL */
1309 { 0x105a, 0x8650, PCI_ANY_ID
, 0x8601, 0, 0,
1310 st_yosemite
}, /* SuperTrak EX8650 */
1311 { 0x105a, 0x8650, PCI_ANY_ID
, 0x8602, 0, 0,
1312 st_yosemite
}, /* SuperTrak EX8654 */
1313 { 0x105a, 0x8650, PCI_ANY_ID
, PCI_ANY_ID
, 0, 0,
1314 st_yosemite
}, /* generic st_yosemite */
1315 { } /* terminate list */
1317 MODULE_DEVICE_TABLE(pci
, stex_pci_tbl
);
1319 static struct pci_driver stex_pci_driver
= {
1321 .id_table
= stex_pci_tbl
,
1322 .probe
= stex_probe
,
1323 .remove
= __devexit_p(stex_remove
),
1324 .shutdown
= stex_shutdown
,
1327 static int __init
stex_init(void)
1329 printk(KERN_INFO DRV_NAME
1330 ": Promise SuperTrak EX Driver version: %s\n",
1333 return pci_register_driver(&stex_pci_driver
);
1336 static void __exit
stex_exit(void)
1338 pci_unregister_driver(&stex_pci_driver
);
1341 module_init(stex_init
);
1342 module_exit(stex_exit
);