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>
18 #include <linux/init.h>
19 #include <linux/errno.h>
20 #include <linux/kernel.h>
21 #include <linux/delay.h>
22 #include <linux/sched.h>
23 #include <linux/time.h>
24 #include <linux/pci.h>
25 #include <linux/blkdev.h>
26 #include <linux/interrupt.h>
27 #include <linux/types.h>
28 #include <linux/module.h>
29 #include <linux/spinlock.h>
32 #include <asm/byteorder.h>
33 #include <scsi/scsi.h>
34 #include <scsi/scsi_device.h>
35 #include <scsi/scsi_cmnd.h>
36 #include <scsi/scsi_host.h>
37 #include <scsi/scsi_tcq.h>
39 #define DRV_NAME "stex"
40 #define ST_DRIVER_VERSION "2.9.0.13"
41 #define ST_VER_MAJOR 2
42 #define ST_VER_MINOR 9
44 #define ST_BUILD_VER 13
47 /* MU register offset */
48 IMR0 = 0x10, /* MU_INBOUND_MESSAGE_REG0 */
49 IMR1 = 0x14, /* MU_INBOUND_MESSAGE_REG1 */
50 OMR0 = 0x18, /* MU_OUTBOUND_MESSAGE_REG0 */
51 OMR1 = 0x1c, /* MU_OUTBOUND_MESSAGE_REG1 */
52 IDBL = 0x20, /* MU_INBOUND_DOORBELL */
53 IIS = 0x24, /* MU_INBOUND_INTERRUPT_STATUS */
54 IIM = 0x28, /* MU_INBOUND_INTERRUPT_MASK */
55 ODBL = 0x2c, /* MU_OUTBOUND_DOORBELL */
56 OIS = 0x30, /* MU_OUTBOUND_INTERRUPT_STATUS */
57 OIM = 0x3c, /* MU_OUTBOUND_INTERRUPT_MASK */
59 /* MU register value */
60 MU_INBOUND_DOORBELL_HANDSHAKE = 1,
61 MU_INBOUND_DOORBELL_REQHEADCHANGED = 2,
62 MU_INBOUND_DOORBELL_STATUSTAILCHANGED = 4,
63 MU_INBOUND_DOORBELL_HMUSTOPPED = 8,
64 MU_INBOUND_DOORBELL_RESET = 16,
66 MU_OUTBOUND_DOORBELL_HANDSHAKE = 1,
67 MU_OUTBOUND_DOORBELL_REQUESTTAILCHANGED = 2,
68 MU_OUTBOUND_DOORBELL_STATUSHEADCHANGED = 4,
69 MU_OUTBOUND_DOORBELL_BUSCHANGE = 8,
70 MU_OUTBOUND_DOORBELL_HASEVENT = 16,
73 MU_STATE_STARTING = 1,
74 MU_STATE_FMU_READY_FOR_HANDSHAKE = 2,
75 MU_STATE_SEND_HANDSHAKE_FRAME = 3,
77 MU_STATE_RESETTING = 5,
79 MU_MAX_DELAY_TIME = 240000,
80 MU_HANDSHAKE_SIGNATURE = 0x55aaaa55,
83 /* firmware returned values */
84 SRB_STATUS_SUCCESS = 0x01,
85 SRB_STATUS_ERROR = 0x04,
86 SRB_STATUS_BUSY = 0x05,
87 SRB_STATUS_INVALID_REQUEST = 0x06,
88 SRB_STATUS_SELECTION_TIMEOUT = 0x0A,
92 TASK_ATTRIBUTE_SIMPLE = 0x0,
93 TASK_ATTRIBUTE_HEADOFQUEUE = 0x1,
94 TASK_ATTRIBUTE_ORDERED = 0x2,
95 TASK_ATTRIBUTE_ACA = 0x4,
97 /* request count, etc. */
100 /* one message wasted, use MU_MAX_REQUEST+1
101 to handle MU_MAX_REQUEST messages */
102 MU_REQ_COUNT = (MU_MAX_REQUEST + 1),
103 MU_STATUS_COUNT = (MU_MAX_REQUEST + 1),
105 STEX_CDB_LENGTH = MAX_COMMAND_SIZE,
106 REQ_VARIABLE_LEN = 1024,
107 STATUS_VAR_LEN = 128,
108 ST_CAN_QUEUE = MU_MAX_REQUEST,
109 ST_CMD_PER_LUN = MU_MAX_REQUEST,
113 SG_CF_EOT = 0x80, /* end of table */
114 SG_CF_64B = 0x40, /* 64 bit item */
115 SG_CF_HOST = 0x20, /* sg in host memory */
117 ST_MAX_ARRAY_SUPPORTED = 16,
118 ST_MAX_TARGET_NUM = (ST_MAX_ARRAY_SUPPORTED+1),
119 ST_MAX_LUN_PER_TARGET = 16,
124 PASSTHRU_REQ_TYPE = 0x00000001,
125 PASSTHRU_REQ_NO_WAKEUP = 0x00000100,
126 ST_INTERNAL_TIMEOUT = 30,
128 /* vendor specific commands of Promise */
130 CONTROLLER_CMD = 0xe1,
131 DEBUGGING_CMD = 0xe2,
134 PASSTHRU_GET_ADAPTER = 0x05,
135 PASSTHRU_GET_DRVVER = 0x10,
136 CTLR_POWER_STATE_CHANGE = 0x0e,
137 CTLR_POWER_SAVING = 0x01,
139 PASSTHRU_SIGNATURE = 0x4e415041,
145 u8 ctrl; /* SG_CF_xxx */
156 struct st_sgitem table[ST_MAX_SG];
159 struct handshake_frame {
160 __le32 rb_phy; /* request payload queue physical address */
162 __le16 req_sz; /* size of each request payload */
163 __le16 req_cnt; /* count of reqs the buffer can hold */
164 __le16 status_sz; /* size of each status payload */
165 __le16 status_cnt; /* count of status the buffer can hold */
166 __le32 hosttime; /* seconds from Jan 1, 1970 (GMT) */
168 u8 partner_type; /* who sends this frame */
170 __le32 partner_ver_major;
171 __le32 partner_ver_minor;
172 __le32 partner_ver_oem;
173 __le32 partner_ver_build;
184 u8 payload_sz; /* payload size in 4-byte, not used */
185 u8 cdb[STEX_CDB_LENGTH];
186 u8 variable[REQ_VARIABLE_LEN];
196 u8 payload_sz; /* payload size in 4-byte */
197 u8 variable[STATUS_VAR_LEN];
212 struct ver_info drv_ver;
213 struct ver_info bios_ver;
242 #define MU_REQ_BUFFER_SIZE (MU_REQ_COUNT * sizeof(struct req_msg))
243 #define MU_STATUS_BUFFER_SIZE (MU_STATUS_COUNT * sizeof(struct status_msg))
244 #define MU_BUFFER_SIZE (MU_REQ_BUFFER_SIZE + MU_STATUS_BUFFER_SIZE)
245 #define STEX_BUFFER_SIZE (MU_BUFFER_SIZE + sizeof(struct st_frame))
249 struct scsi_cmnd *cmd;
252 unsigned int sense_bufflen;
261 void __iomem *mmio_base; /* iomapped PCI memory space */
263 dma_addr_t dma_handle;
265 struct Scsi_Host *host;
266 struct pci_dev *pdev;
273 struct status_msg *status_buffer;
274 void *copy_buffer; /* temp buffer for driver-handled commands */
275 struct st_ccb ccb[MU_MAX_REQUEST];
276 struct st_ccb *wait_ccb;
277 wait_queue_head_t waitq;
279 unsigned int mu_status;
282 unsigned int cardtype;
285 static const char console_inq_page[] =
287 0x03,0x00,0x03,0x03,0xFA,0x00,0x00,0x30,
288 0x50,0x72,0x6F,0x6D,0x69,0x73,0x65,0x20, /* "Promise " */
289 0x52,0x41,0x49,0x44,0x20,0x43,0x6F,0x6E, /* "RAID Con" */
290 0x73,0x6F,0x6C,0x65,0x20,0x20,0x20,0x20, /* "sole " */
291 0x31,0x2E,0x30,0x30,0x20,0x20,0x20,0x20, /* "1.00 " */
292 0x53,0x58,0x2F,0x52,0x53,0x41,0x46,0x2D, /* "SX/RSAF-" */
293 0x54,0x45,0x31,0x2E,0x30,0x30,0x20,0x20, /* "TE1.00 " */
294 0x0C,0x20,0x20,0x20,0x20,0x20,0x20,0x20
297 MODULE_AUTHOR("Ed Lin");
298 MODULE_DESCRIPTION("Promise Technology SuperTrak EX Controllers");
299 MODULE_LICENSE("GPL");
300 MODULE_VERSION(ST_DRIVER_VERSION);
302 static void stex_gettime(__le32 *time)
305 do_gettimeofday(&tv);
307 *time = cpu_to_le32(tv.tv_sec & 0xffffffff);
308 *(time + 1) = cpu_to_le32((tv.tv_sec >> 16) >> 16);
311 static struct status_msg *stex_get_status(struct st_hba *hba)
313 struct status_msg *status =
314 hba->status_buffer + hba->status_tail;
317 hba->status_tail %= MU_STATUS_COUNT;
322 static void stex_set_sense(struct scsi_cmnd *cmd, u8 sk, u8 asc, u8 ascq)
324 cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION;
326 cmd->sense_buffer[0] = 0x70; /* fixed format, current */
327 cmd->sense_buffer[2] = sk;
328 cmd->sense_buffer[7] = 18 - 8; /* additional sense length */
329 cmd->sense_buffer[12] = asc;
330 cmd->sense_buffer[13] = ascq;
333 static void stex_invalid_field(struct scsi_cmnd *cmd,
334 void (*done)(struct scsi_cmnd *))
336 /* "Invalid field in cbd" */
337 stex_set_sense(cmd, ILLEGAL_REQUEST, 0x24, 0x0);
341 static struct req_msg *stex_alloc_req(struct st_hba *hba)
343 struct req_msg *req = ((struct req_msg *)hba->dma_mem) +
347 hba->req_head %= MU_REQ_COUNT;
352 static int stex_map_sg(struct st_hba *hba,
353 struct req_msg *req, struct st_ccb *ccb)
355 struct pci_dev *pdev = hba->pdev;
356 struct scsi_cmnd *cmd;
357 dma_addr_t dma_handle;
358 struct scatterlist *src;
359 struct st_sgtable *dst;
363 dst = (struct st_sgtable *)req->variable;
364 dst->max_sg_count = cpu_to_le16(ST_MAX_SG);
365 dst->sz_in_byte = cpu_to_le32(cmd->request_bufflen);
370 src = (struct scatterlist *) cmd->request_buffer;
371 n_elem = pci_map_sg(pdev, src,
372 cmd->use_sg, cmd->sc_data_direction);
376 ccb->sg_count = n_elem;
377 dst->sg_count = cpu_to_le16((u16)n_elem);
379 for (i = 0; i < n_elem; i++, src++) {
380 dst->table[i].count = cpu_to_le32((u32)sg_dma_len(src));
382 cpu_to_le32(sg_dma_address(src) & 0xffffffff);
383 dst->table[i].addr_hi =
384 cpu_to_le32((sg_dma_address(src) >> 16) >> 16);
385 dst->table[i].ctrl = SG_CF_64B | SG_CF_HOST;
387 dst->table[--i].ctrl |= SG_CF_EOT;
391 dma_handle = pci_map_single(pdev, cmd->request_buffer,
392 cmd->request_bufflen, cmd->sc_data_direction);
393 cmd->SCp.dma_handle = dma_handle;
396 dst->sg_count = cpu_to_le16(1);
397 dst->table[0].addr = cpu_to_le32(dma_handle & 0xffffffff);
398 dst->table[0].addr_hi = cpu_to_le32((dma_handle >> 16) >> 16);
399 dst->table[0].count = cpu_to_le32((u32)cmd->request_bufflen);
400 dst->table[0].ctrl = SG_CF_EOT | SG_CF_64B | SG_CF_HOST;
405 static void stex_internal_copy(struct scsi_cmnd *cmd,
406 const void *src, size_t *count, int sg_count)
410 void *s, *d, *base = NULL;
411 if (*count > cmd->request_bufflen)
412 *count = cmd->request_bufflen;
418 size_t offset = *count - lcount;
420 base = scsi_kmap_atomic_sg(cmd->request_buffer,
421 sg_count, &offset, &len);
428 d = cmd->request_buffer;
434 scsi_kunmap_atomic_sg(base);
438 static int stex_direct_copy(struct scsi_cmnd *cmd,
439 const void *src, size_t count)
441 struct st_hba *hba = (struct st_hba *) &cmd->device->host->hostdata[0];
442 size_t cp_len = count;
446 n_elem = pci_map_sg(hba->pdev, cmd->request_buffer,
447 cmd->use_sg, cmd->sc_data_direction);
452 stex_internal_copy(cmd, src, &cp_len, n_elem);
455 pci_unmap_sg(hba->pdev, cmd->request_buffer,
456 cmd->use_sg, cmd->sc_data_direction);
457 return cp_len == count;
460 static void stex_controller_info(struct st_hba *hba, struct st_ccb *ccb)
463 size_t count = sizeof(struct st_frame);
465 p = hba->copy_buffer;
466 memset(p->base, 0, sizeof(u32)*6);
467 *(unsigned long *)(p->base) = pci_resource_start(hba->pdev, 0);
470 p->drv_ver.major = ST_VER_MAJOR;
471 p->drv_ver.minor = ST_VER_MINOR;
472 p->drv_ver.oem = ST_OEM;
473 p->drv_ver.build = ST_BUILD_VER;
475 p->bus = hba->pdev->bus->number;
476 p->slot = hba->pdev->devfn;
478 p->irq_vec = hba->pdev->irq;
479 p->id = hba->pdev->vendor << 16 | hba->pdev->device;
481 hba->pdev->subsystem_vendor << 16 | hba->pdev->subsystem_device;
483 stex_internal_copy(ccb->cmd, p, &count, ccb->sg_count);
487 stex_send_cmd(struct st_hba *hba, struct req_msg *req, u16 tag)
489 req->tag = cpu_to_le16(tag);
490 req->task_attr = TASK_ATTRIBUTE_SIMPLE;
491 req->task_manage = 0; /* not supported yet */
493 hba->ccb[tag].req = req;
496 writel(hba->req_head, hba->mmio_base + IMR0);
497 writel(MU_INBOUND_DOORBELL_REQHEADCHANGED, hba->mmio_base + IDBL);
498 readl(hba->mmio_base + IDBL); /* flush */
502 stex_slave_alloc(struct scsi_device *sdev)
504 /* Cheat: usually extracted from Inquiry data */
505 sdev->tagged_supported = 1;
507 scsi_activate_tcq(sdev, sdev->host->can_queue);
513 stex_slave_config(struct scsi_device *sdev)
515 sdev->use_10_for_rw = 1;
516 sdev->use_10_for_ms = 1;
517 sdev->timeout = 60 * HZ;
518 sdev->tagged_supported = 1;
524 stex_slave_destroy(struct scsi_device *sdev)
526 scsi_deactivate_tcq(sdev, 1);
530 stex_queuecommand(struct scsi_cmnd *cmd, void (* done)(struct scsi_cmnd *))
533 struct Scsi_Host *host;
537 host = cmd->device->host;
538 id = cmd->device->id;
539 lun = cmd->device->channel; /* firmware lun issue work around */
540 hba = (struct st_hba *) &host->hostdata[0];
542 switch (cmd->cmnd[0]) {
545 static char ms10_caching_page[12] =
546 { 0, 0x12, 0, 0, 0, 0, 0, 0, 0x8, 0xa, 0x4, 0 };
548 page = cmd->cmnd[2] & 0x3f;
549 if (page == 0x8 || page == 0x3f) {
550 stex_direct_copy(cmd, ms10_caching_page,
551 sizeof(ms10_caching_page));
552 cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8;
555 stex_invalid_field(cmd, done);
559 if (id != ST_MAX_ARRAY_SUPPORTED)
561 if (lun == 0 && (cmd->cmnd[1] & INQUIRY_EVPD) == 0) {
562 stex_direct_copy(cmd, console_inq_page,
563 sizeof(console_inq_page));
564 cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8;
567 stex_invalid_field(cmd, done);
570 if (cmd->cmnd[1] == PASSTHRU_GET_DRVVER) {
571 struct st_drvver ver;
572 ver.major = ST_VER_MAJOR;
573 ver.minor = ST_VER_MINOR;
575 ver.build = ST_BUILD_VER;
576 ver.signature[0] = PASSTHRU_SIGNATURE;
577 ver.console_id = ST_MAX_ARRAY_SUPPORTED;
578 ver.host_no = hba->host->host_no;
579 cmd->result = stex_direct_copy(cmd, &ver, sizeof(ver)) ?
580 DID_OK << 16 | COMMAND_COMPLETE << 8 :
581 DID_ERROR << 16 | COMMAND_COMPLETE << 8;
589 cmd->scsi_done = done;
591 tag = cmd->request->tag;
593 if (unlikely(tag >= host->can_queue))
594 return SCSI_MLQUEUE_HOST_BUSY;
596 req = stex_alloc_req(hba);
601 memcpy(req->cdb, cmd->cmnd, STEX_CDB_LENGTH);
603 hba->ccb[tag].cmd = cmd;
604 hba->ccb[tag].sense_bufflen = SCSI_SENSE_BUFFERSIZE;
605 hba->ccb[tag].sense_buffer = cmd->sense_buffer;
606 hba->ccb[tag].req_type = 0;
608 if (cmd->sc_data_direction != DMA_NONE)
609 stex_map_sg(hba, req, &hba->ccb[tag]);
611 stex_send_cmd(hba, req, tag);
615 static void stex_unmap_sg(struct st_hba *hba, struct scsi_cmnd *cmd)
617 if (cmd->sc_data_direction != DMA_NONE) {
619 pci_unmap_sg(hba->pdev, cmd->request_buffer,
620 cmd->use_sg, cmd->sc_data_direction);
622 pci_unmap_single(hba->pdev, cmd->SCp.dma_handle,
623 cmd->request_bufflen, cmd->sc_data_direction);
627 static void stex_scsi_done(struct st_ccb *ccb)
629 struct scsi_cmnd *cmd = ccb->cmd;
632 if (ccb->srb_status == SRB_STATUS_SUCCESS || ccb->srb_status == 0) {
633 result = ccb->scsi_status;
634 switch (ccb->scsi_status) {
636 result |= DID_OK << 16 | COMMAND_COMPLETE << 8;
638 case SAM_STAT_CHECK_CONDITION:
639 result |= DRIVER_SENSE << 24;
642 result |= DID_BUS_BUSY << 16 | COMMAND_COMPLETE << 8;
645 result |= DID_ERROR << 16 | COMMAND_COMPLETE << 8;
649 else if (ccb->srb_status & SRB_SEE_SENSE)
650 result = DRIVER_SENSE << 24 | SAM_STAT_CHECK_CONDITION;
651 else switch (ccb->srb_status) {
652 case SRB_STATUS_SELECTION_TIMEOUT:
653 result = DID_NO_CONNECT << 16 | COMMAND_COMPLETE << 8;
655 case SRB_STATUS_BUSY:
656 result = DID_BUS_BUSY << 16 | COMMAND_COMPLETE << 8;
658 case SRB_STATUS_INVALID_REQUEST:
659 case SRB_STATUS_ERROR:
661 result = DID_ERROR << 16 | COMMAND_COMPLETE << 8;
665 cmd->result = result;
669 static void stex_copy_data(struct st_ccb *ccb,
670 struct status_msg *resp, unsigned int variable)
672 size_t count = variable;
673 if (resp->scsi_status != SAM_STAT_GOOD) {
674 if (ccb->sense_buffer != NULL)
675 memcpy(ccb->sense_buffer, resp->variable,
676 min(variable, ccb->sense_bufflen));
680 if (ccb->cmd == NULL)
682 stex_internal_copy(ccb->cmd, resp->variable, &count, ccb->sg_count);
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));
704 if (unlikely(hba->mu_status != MU_STATE_STARTED ||
705 hba->out_req_cnt <= 0)) {
706 hba->status_tail = hba->status_head;
710 while (hba->status_tail != hba->status_head) {
711 resp = stex_get_status(hba);
712 tag = le16_to_cpu(resp->tag);
713 if (unlikely(tag >= hba->host->can_queue)) {
714 printk(KERN_WARNING DRV_NAME
715 "(%s): invalid tag\n", pci_name(hba->pdev));
719 ccb = &hba->ccb[tag];
720 if (hba->wait_ccb == ccb)
721 hba->wait_ccb = NULL;
722 if (unlikely(ccb->req == NULL)) {
723 printk(KERN_WARNING DRV_NAME
724 "(%s): lagging req\n", pci_name(hba->pdev));
728 size = resp->payload_sz * sizeof(u32); /* payload size */
729 if (unlikely(size < sizeof(*resp) - STATUS_VAR_LEN ||
730 size > sizeof(*resp))) {
731 printk(KERN_WARNING DRV_NAME "(%s): bad status size\n",
732 pci_name(hba->pdev));
734 size -= sizeof(*resp) - STATUS_VAR_LEN; /* copy size */
736 stex_copy_data(ccb, resp, size);
739 ccb->srb_status = resp->srb_status;
740 ccb->scsi_status = resp->scsi_status;
742 if (likely(ccb->cmd != NULL)) {
743 if (unlikely(ccb->cmd->cmnd[0] == PASSTHRU_CMD &&
744 ccb->cmd->cmnd[1] == PASSTHRU_GET_ADAPTER))
745 stex_controller_info(hba, ccb);
746 stex_unmap_sg(hba, ccb->cmd);
749 } else if (ccb->req_type & PASSTHRU_REQ_TYPE) {
751 if (ccb->req_type & PASSTHRU_REQ_NO_WAKEUP) {
756 if (waitqueue_active(&hba->waitq))
757 wake_up(&hba->waitq);
762 writel(hba->status_head, base + IMR1);
763 readl(base + IMR1); /* flush */
766 static irqreturn_t stex_intr(int irq, void *__hba, struct pt_regs *regs)
768 struct st_hba *hba = __hba;
769 void __iomem *base = hba->mmio_base;
774 spin_lock_irqsave(hba->host->host_lock, flags);
776 data = readl(base + ODBL);
778 if (data && data != 0xffffffff) {
779 /* clear the interrupt */
780 writel(data, base + ODBL);
781 readl(base + ODBL); /* flush */
782 stex_mu_intr(hba, data);
786 spin_unlock_irqrestore(hba->host->host_lock, flags);
788 return IRQ_RETVAL(handled);
791 static int stex_handshake(struct st_hba *hba)
793 void __iomem *base = hba->mmio_base;
794 struct handshake_frame *h;
795 dma_addr_t status_phys;
798 if (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) {
799 writel(MU_INBOUND_DOORBELL_HANDSHAKE, base + IDBL);
801 for (i = 0; readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE
802 && i < MU_MAX_DELAY_TIME; i++) {
807 if (i == MU_MAX_DELAY_TIME) {
808 printk(KERN_ERR DRV_NAME
809 "(%s): no handshake signature\n",
810 pci_name(hba->pdev));
817 h = (struct handshake_frame *)(hba->dma_mem + MU_REQ_BUFFER_SIZE);
818 h->rb_phy = cpu_to_le32(hba->dma_handle);
819 h->rb_phy_hi = cpu_to_le32((hba->dma_handle >> 16) >> 16);
820 h->req_sz = cpu_to_le16(sizeof(struct req_msg));
821 h->req_cnt = cpu_to_le16(MU_REQ_COUNT);
822 h->status_sz = cpu_to_le16(sizeof(struct status_msg));
823 h->status_cnt = cpu_to_le16(MU_STATUS_COUNT);
824 stex_gettime(&h->hosttime);
825 h->partner_type = HMU_PARTNER_TYPE;
827 status_phys = hba->dma_handle + MU_REQ_BUFFER_SIZE;
828 writel(status_phys, base + IMR0);
830 writel((status_phys >> 16) >> 16, base + IMR1);
833 writel((status_phys >> 16) >> 16, base + OMR0); /* old fw compatible */
835 writel(MU_INBOUND_DOORBELL_HANDSHAKE, base + IDBL);
836 readl(base + IDBL); /* flush */
839 for (i = 0; readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE
840 && i < MU_MAX_DELAY_TIME; i++) {
845 if (i == MU_MAX_DELAY_TIME) {
846 printk(KERN_ERR DRV_NAME
847 "(%s): no signature after handshake frame\n",
848 pci_name(hba->pdev));
852 writel(0, base + IMR0);
854 writel(0, base + OMR0);
856 writel(0, base + IMR1);
858 writel(0, base + OMR1);
859 readl(base + OMR1); /* flush */
860 hba->mu_status = MU_STATE_STARTED;
864 static int stex_abort(struct scsi_cmnd *cmd)
866 struct Scsi_Host *host = cmd->device->host;
867 struct st_hba *hba = (struct st_hba *)host->hostdata;
868 u16 tag = cmd->request->tag;
871 int result = SUCCESS;
873 base = hba->mmio_base;
874 spin_lock_irqsave(host->host_lock, flags);
875 if (tag < host->can_queue && hba->ccb[tag].cmd == cmd)
876 hba->wait_ccb = &hba->ccb[tag];
878 for (tag = 0; tag < host->can_queue; tag++)
879 if (hba->ccb[tag].cmd == cmd) {
880 hba->wait_ccb = &hba->ccb[tag];
883 if (tag >= host->can_queue)
887 data = readl(base + ODBL);
888 if (data == 0 || data == 0xffffffff)
891 writel(data, base + ODBL);
892 readl(base + ODBL); /* flush */
894 stex_mu_intr(hba, data);
896 if (hba->wait_ccb == NULL) {
897 printk(KERN_WARNING DRV_NAME
898 "(%s): lost interrupt\n", pci_name(hba->pdev));
903 stex_unmap_sg(hba, cmd);
904 hba->wait_ccb->req = NULL; /* nullify the req's future return */
905 hba->wait_ccb = NULL;
908 spin_unlock_irqrestore(host->host_lock, flags);
912 static void stex_hard_reset(struct st_hba *hba)
919 for (i = 0; i < 16; i++)
920 pci_read_config_dword(hba->pdev, i * 4,
921 &hba->pdev->saved_config_space[i]);
923 /* Reset secondary bus. Our controller(MU/ATU) is the only device on
924 secondary bus. Consult Intel 80331/3 developer's manual for detail */
925 bus = hba->pdev->bus;
926 pci_read_config_byte(bus->self, PCI_BRIDGE_CONTROL, &pci_bctl);
927 pci_bctl |= PCI_BRIDGE_CTL_BUS_RESET;
928 pci_write_config_byte(bus->self, PCI_BRIDGE_CONTROL, pci_bctl);
930 pci_bctl &= ~PCI_BRIDGE_CTL_BUS_RESET;
931 pci_write_config_byte(bus->self, PCI_BRIDGE_CONTROL, pci_bctl);
933 for (i = 0; i < MU_MAX_DELAY_TIME; i++) {
934 pci_read_config_word(hba->pdev, PCI_COMMAND, &pci_cmd);
935 if (pci_cmd & PCI_COMMAND_MASTER)
941 for (i = 0; i < 16; i++)
942 pci_write_config_dword(hba->pdev, i * 4,
943 hba->pdev->saved_config_space[i]);
946 static int stex_reset(struct scsi_cmnd *cmd)
950 hba = (struct st_hba *) &cmd->device->host->hostdata[0];
952 hba->mu_status = MU_STATE_RESETTING;
954 if (hba->cardtype == st_shasta)
955 stex_hard_reset(hba);
957 if (stex_handshake(hba)) {
958 printk(KERN_WARNING DRV_NAME
959 "(%s): resetting: handshake failed\n",
960 pci_name(hba->pdev));
963 spin_lock_irqsave(hba->host->host_lock, flags);
966 hba->status_head = 0;
967 hba->status_tail = 0;
968 hba->out_req_cnt = 0;
969 spin_unlock_irqrestore(hba->host->host_lock, flags);
974 static int stex_biosparam(struct scsi_device *sdev,
975 struct block_device *bdev, sector_t capacity, int geom[])
977 int heads = 255, sectors = 63, cylinders;
979 if (capacity < 0x200000) {
984 cylinders = sector_div(capacity, heads * sectors);
993 static struct scsi_host_template driver_template = {
994 .module = THIS_MODULE,
996 .proc_name = DRV_NAME,
997 .bios_param = stex_biosparam,
998 .queuecommand = stex_queuecommand,
999 .slave_alloc = stex_slave_alloc,
1000 .slave_configure = stex_slave_config,
1001 .slave_destroy = stex_slave_destroy,
1002 .eh_abort_handler = stex_abort,
1003 .eh_host_reset_handler = stex_reset,
1004 .can_queue = ST_CAN_QUEUE,
1006 .sg_tablesize = ST_MAX_SG,
1007 .cmd_per_lun = ST_CMD_PER_LUN,
1010 static int stex_set_dma_mask(struct pci_dev * pdev)
1013 if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)
1014 && !pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK))
1016 ret = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
1018 ret = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK);
1022 static int __devinit
1023 stex_probe(struct pci_dev *pdev, const struct pci_device_id *id)
1026 struct Scsi_Host *host;
1029 err = pci_enable_device(pdev);
1033 pci_set_master(pdev);
1035 host = scsi_host_alloc(&driver_template, sizeof(struct st_hba));
1038 printk(KERN_ERR DRV_NAME "(%s): scsi_host_alloc failed\n",
1044 hba = (struct st_hba *)host->hostdata;
1045 memset(hba, 0, sizeof(struct st_hba));
1047 err = pci_request_regions(pdev, DRV_NAME);
1049 printk(KERN_ERR DRV_NAME "(%s): request regions failed\n",
1051 goto out_scsi_host_put;
1054 hba->mmio_base = ioremap(pci_resource_start(pdev, 0),
1055 pci_resource_len(pdev, 0));
1056 if ( !hba->mmio_base) {
1057 printk(KERN_ERR DRV_NAME "(%s): memory map failed\n",
1060 goto out_release_regions;
1063 err = stex_set_dma_mask(pdev);
1065 printk(KERN_ERR DRV_NAME "(%s): set dma mask failed\n",
1070 hba->dma_mem = dma_alloc_coherent(&pdev->dev,
1071 STEX_BUFFER_SIZE, &hba->dma_handle, GFP_KERNEL);
1072 if (!hba->dma_mem) {
1074 printk(KERN_ERR DRV_NAME "(%s): dma mem alloc failed\n",
1079 hba->status_buffer =
1080 (struct status_msg *)(hba->dma_mem + MU_REQ_BUFFER_SIZE);
1081 hba->copy_buffer = hba->dma_mem + MU_BUFFER_SIZE;
1082 hba->mu_status = MU_STATE_STARTING;
1084 hba->cardtype = (unsigned int) id->driver_data;
1086 /* firmware uses id/lun pair for a logical drive, but lun would be
1087 always 0 if CONFIG_SCSI_MULTI_LUN not configured, so we use
1088 channel to map lun here */
1089 host->max_channel = ST_MAX_LUN_PER_TARGET - 1;
1090 host->max_id = ST_MAX_TARGET_NUM;
1092 host->unique_id = host->host_no;
1093 host->max_cmd_len = STEX_CDB_LENGTH;
1097 init_waitqueue_head(&hba->waitq);
1099 err = request_irq(pdev->irq, stex_intr, IRQF_SHARED, DRV_NAME, hba);
1101 printk(KERN_ERR DRV_NAME "(%s): request irq failed\n",
1106 err = stex_handshake(hba);
1110 err = scsi_init_shared_tag_map(host, ST_CAN_QUEUE);
1112 printk(KERN_ERR DRV_NAME "(%s): init shared queue failed\n",
1117 pci_set_drvdata(pdev, hba);
1119 err = scsi_add_host(host, &pdev->dev);
1121 printk(KERN_ERR DRV_NAME "(%s): scsi_add_host failed\n",
1126 scsi_scan_host(host);
1131 free_irq(pdev->irq, hba);
1133 dma_free_coherent(&pdev->dev, STEX_BUFFER_SIZE,
1134 hba->dma_mem, hba->dma_handle);
1136 iounmap(hba->mmio_base);
1137 out_release_regions:
1138 pci_release_regions(pdev);
1140 scsi_host_put(host);
1142 pci_disable_device(pdev);
1147 static void stex_hba_stop(struct st_hba *hba)
1149 struct req_msg *req;
1150 unsigned long flags;
1151 unsigned long before;
1154 spin_lock_irqsave(hba->host->host_lock, flags);
1155 req = stex_alloc_req(hba);
1156 memset(req->cdb, 0, STEX_CDB_LENGTH);
1158 req->cdb[0] = CONTROLLER_CMD;
1159 req->cdb[1] = CTLR_POWER_STATE_CHANGE;
1160 req->cdb[2] = CTLR_POWER_SAVING;
1162 hba->ccb[tag].cmd = NULL;
1163 hba->ccb[tag].sg_count = 0;
1164 hba->ccb[tag].sense_bufflen = 0;
1165 hba->ccb[tag].sense_buffer = NULL;
1166 hba->ccb[tag].req_type |= PASSTHRU_REQ_TYPE;
1168 stex_send_cmd(hba, req, tag);
1169 spin_unlock_irqrestore(hba->host->host_lock, flags);
1172 while (hba->ccb[tag].req_type & PASSTHRU_REQ_TYPE) {
1173 if (time_after(jiffies, before + ST_INTERNAL_TIMEOUT * HZ))
1179 static void stex_hba_free(struct st_hba *hba)
1181 free_irq(hba->pdev->irq, hba);
1183 iounmap(hba->mmio_base);
1185 pci_release_regions(hba->pdev);
1187 dma_free_coherent(&hba->pdev->dev, STEX_BUFFER_SIZE,
1188 hba->dma_mem, hba->dma_handle);
1191 static void stex_remove(struct pci_dev *pdev)
1193 struct st_hba *hba = pci_get_drvdata(pdev);
1195 scsi_remove_host(hba->host);
1197 pci_set_drvdata(pdev, NULL);
1203 scsi_host_put(hba->host);
1205 pci_disable_device(pdev);
1208 static void stex_shutdown(struct pci_dev *pdev)
1210 struct st_hba *hba = pci_get_drvdata(pdev);
1215 static struct pci_device_id stex_pci_tbl[] = {
1216 { 0x105a, 0x8350, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_shasta },
1217 { 0x105a, 0xc350, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_shasta },
1218 { 0x105a, 0xf350, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_shasta },
1219 { 0x105a, 0x4301, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_shasta },
1220 { 0x105a, 0x4302, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_shasta },
1221 { 0x105a, 0x8301, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_shasta },
1222 { 0x105a, 0x8302, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_shasta },
1223 { 0x1725, 0x7250, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_vsc },
1224 { } /* terminate list */
1226 MODULE_DEVICE_TABLE(pci, stex_pci_tbl);
1228 static struct pci_driver stex_pci_driver = {
1230 .id_table = stex_pci_tbl,
1231 .probe = stex_probe,
1232 .remove = __devexit_p(stex_remove),
1233 .shutdown = stex_shutdown,
1236 static int __init stex_init(void)
1238 printk(KERN_INFO DRV_NAME
1239 ": Promise SuperTrak EX Driver version: %s\n",
1242 return pci_register_driver(&stex_pci_driver);
1245 static void __exit stex_exit(void)
1247 pci_unregister_driver(&stex_pci_driver);
1250 module_init(stex_init);
1251 module_exit(stex_exit);