/* * SuperTrak EX Series Storage Controller driver for Linux * * Copyright (C) 2005, 2006 Promise Technology Inc. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. * * Written By: * Ed Lin * * Version: 2.9.0.13 * */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #define DRV_NAME "stex" #define ST_DRIVER_VERSION "2.9.0.13" #define ST_VER_MAJOR 2 #define ST_VER_MINOR 9 #define ST_OEM 0 #define ST_BUILD_VER 13 enum { /* MU register offset */ IMR0 = 0x10, /* MU_INBOUND_MESSAGE_REG0 */ IMR1 = 0x14, /* MU_INBOUND_MESSAGE_REG1 */ OMR0 = 0x18, /* MU_OUTBOUND_MESSAGE_REG0 */ OMR1 = 0x1c, /* MU_OUTBOUND_MESSAGE_REG1 */ IDBL = 0x20, /* MU_INBOUND_DOORBELL */ IIS = 0x24, /* MU_INBOUND_INTERRUPT_STATUS */ IIM = 0x28, /* MU_INBOUND_INTERRUPT_MASK */ ODBL = 0x2c, /* MU_OUTBOUND_DOORBELL */ OIS = 0x30, /* MU_OUTBOUND_INTERRUPT_STATUS */ OIM = 0x3c, /* MU_OUTBOUND_INTERRUPT_MASK */ /* MU register value */ MU_INBOUND_DOORBELL_HANDSHAKE = 1, MU_INBOUND_DOORBELL_REQHEADCHANGED = 2, MU_INBOUND_DOORBELL_STATUSTAILCHANGED = 4, MU_INBOUND_DOORBELL_HMUSTOPPED = 8, MU_INBOUND_DOORBELL_RESET = 16, MU_OUTBOUND_DOORBELL_HANDSHAKE = 1, MU_OUTBOUND_DOORBELL_REQUESTTAILCHANGED = 2, MU_OUTBOUND_DOORBELL_STATUSHEADCHANGED = 4, MU_OUTBOUND_DOORBELL_BUSCHANGE = 8, MU_OUTBOUND_DOORBELL_HASEVENT = 16, /* MU status code */ MU_STATE_STARTING = 1, MU_STATE_FMU_READY_FOR_HANDSHAKE = 2, MU_STATE_SEND_HANDSHAKE_FRAME = 3, MU_STATE_STARTED = 4, MU_STATE_RESETTING = 5, MU_MAX_DELAY_TIME = 240000, MU_HANDSHAKE_SIGNATURE = 0x55aaaa55, HMU_PARTNER_TYPE = 2, /* firmware returned values */ SRB_STATUS_SUCCESS = 0x01, SRB_STATUS_ERROR = 0x04, SRB_STATUS_BUSY = 0x05, SRB_STATUS_INVALID_REQUEST = 0x06, SRB_STATUS_SELECTION_TIMEOUT = 0x0A, SRB_SEE_SENSE = 0x80, /* task attribute */ TASK_ATTRIBUTE_SIMPLE = 0x0, TASK_ATTRIBUTE_HEADOFQUEUE = 0x1, TASK_ATTRIBUTE_ORDERED = 0x2, TASK_ATTRIBUTE_ACA = 0x4, /* request count, etc. */ MU_MAX_REQUEST = 32, TAG_BITMAP_LENGTH = MU_MAX_REQUEST, /* one message wasted, use MU_MAX_REQUEST+1 to handle MU_MAX_REQUEST messages */ MU_REQ_COUNT = (MU_MAX_REQUEST + 1), MU_STATUS_COUNT = (MU_MAX_REQUEST + 1), STEX_CDB_LENGTH = MAX_COMMAND_SIZE, REQ_VARIABLE_LEN = 1024, STATUS_VAR_LEN = 128, ST_CAN_QUEUE = MU_MAX_REQUEST, ST_CMD_PER_LUN = MU_MAX_REQUEST, ST_MAX_SG = 32, /* sg flags */ SG_CF_EOT = 0x80, /* end of table */ SG_CF_64B = 0x40, /* 64 bit item */ SG_CF_HOST = 0x20, /* sg in host memory */ ST_MAX_ARRAY_SUPPORTED = 16, ST_MAX_TARGET_NUM = (ST_MAX_ARRAY_SUPPORTED+1), ST_MAX_LUN_PER_TARGET = 16, st_shasta = 0, st_vsc = 1, PASSTHRU_REQ_TYPE = 0x00000001, PASSTHRU_REQ_NO_WAKEUP = 0x00000100, ST_INTERNAL_TIMEOUT = 30, /* vendor specific commands of Promise */ ARRAY_CMD = 0xe0, CONTROLLER_CMD = 0xe1, DEBUGGING_CMD = 0xe2, PASSTHRU_CMD = 0xe3, PASSTHRU_GET_ADAPTER = 0x05, PASSTHRU_GET_DRVVER = 0x10, CTLR_POWER_STATE_CHANGE = 0x0e, CTLR_POWER_SAVING = 0x01, PASSTHRU_SIGNATURE = 0x4e415041, INQUIRY_EVPD = 0x01, }; struct st_sgitem { u8 ctrl; /* SG_CF_xxx */ u8 reserved[3]; __le32 count; __le32 addr; __le32 addr_hi; }; struct st_sgtable { __le16 sg_count; __le16 max_sg_count; __le32 sz_in_byte; struct st_sgitem table[ST_MAX_SG]; }; struct handshake_frame { __le32 rb_phy; /* request payload queue physical address */ __le32 rb_phy_hi; __le16 req_sz; /* size of each request payload */ __le16 req_cnt; /* count of reqs the buffer can hold */ __le16 status_sz; /* size of each status payload */ __le16 status_cnt; /* count of status the buffer can hold */ __le32 hosttime; /* seconds from Jan 1, 1970 (GMT) */ __le32 hosttime_hi; u8 partner_type; /* who sends this frame */ u8 reserved0[7]; __le32 partner_ver_major; __le32 partner_ver_minor; __le32 partner_ver_oem; __le32 partner_ver_build; u32 reserved1[4]; }; struct req_msg { __le16 tag; u8 lun; u8 target; u8 task_attr; u8 task_manage; u8 prd_entry; u8 payload_sz; /* payload size in 4-byte */ u8 cdb[STEX_CDB_LENGTH]; u8 variable[REQ_VARIABLE_LEN]; }; struct status_msg { __le16 tag; u8 lun; u8 target; u8 srb_status; u8 scsi_status; u8 reserved; u8 payload_sz; /* payload size in 4-byte */ u8 variable[STATUS_VAR_LEN]; }; struct ver_info { u32 major; u32 minor; u32 oem; u32 build; u32 reserved[2]; }; struct st_frame { u32 base[6]; u32 rom_addr; struct ver_info drv_ver; struct ver_info bios_ver; u32 bus; u32 slot; u32 irq_level; u32 irq_vec; u32 id; u32 subid; u32 dimm_size; u8 dimm_type; u8 reserved[3]; u32 channel; u32 reserved1; }; struct st_drvver { u32 major; u32 minor; u32 oem; u32 build; u32 signature[2]; u8 console_id; u8 host_no; u8 reserved0[2]; u32 reserved[3]; }; #define MU_REQ_BUFFER_SIZE (MU_REQ_COUNT * sizeof(struct req_msg)) #define MU_STATUS_BUFFER_SIZE (MU_STATUS_COUNT * sizeof(struct status_msg)) #define MU_BUFFER_SIZE (MU_REQ_BUFFER_SIZE + MU_STATUS_BUFFER_SIZE) #define STEX_BUFFER_SIZE (MU_BUFFER_SIZE + sizeof(struct st_frame)) struct st_ccb { struct req_msg *req; struct scsi_cmnd *cmd; void *sense_buffer; unsigned int sense_bufflen; int sg_count; u32 req_type; u8 srb_status; u8 scsi_status; }; struct st_hba { void __iomem *mmio_base; /* iomapped PCI memory space */ void *dma_mem; dma_addr_t dma_handle; struct Scsi_Host *host; struct pci_dev *pdev; u32 tag; u32 req_head; u32 req_tail; u32 status_head; u32 status_tail; struct status_msg *status_buffer; void *copy_buffer; /* temp buffer for driver-handled commands */ struct st_ccb ccb[MU_MAX_REQUEST]; struct st_ccb *wait_ccb; wait_queue_head_t waitq; unsigned int mu_status; int out_req_cnt; unsigned int cardtype; }; static const char console_inq_page[] = { 0x03,0x00,0x03,0x03,0xFA,0x00,0x00,0x30, 0x50,0x72,0x6F,0x6D,0x69,0x73,0x65,0x20, /* "Promise " */ 0x52,0x41,0x49,0x44,0x20,0x43,0x6F,0x6E, /* "RAID Con" */ 0x73,0x6F,0x6C,0x65,0x20,0x20,0x20,0x20, /* "sole " */ 0x31,0x2E,0x30,0x30,0x20,0x20,0x20,0x20, /* "1.00 " */ 0x53,0x58,0x2F,0x52,0x53,0x41,0x46,0x2D, /* "SX/RSAF-" */ 0x54,0x45,0x31,0x2E,0x30,0x30,0x20,0x20, /* "TE1.00 " */ 0x0C,0x20,0x20,0x20,0x20,0x20,0x20,0x20 }; MODULE_AUTHOR("Ed Lin"); MODULE_DESCRIPTION("Promise Technology SuperTrak EX Controllers"); MODULE_LICENSE("GPL"); MODULE_VERSION(ST_DRIVER_VERSION); static void stex_gettime(__le32 *time) { struct timeval tv; do_gettimeofday(&tv); *time = cpu_to_le32(tv.tv_sec & 0xffffffff); *(time + 1) = cpu_to_le32((tv.tv_sec >> 16) >> 16); } static u16 __stex_alloc_tag(unsigned long *bitmap) { int i; i = find_first_zero_bit(bitmap, TAG_BITMAP_LENGTH); if (i < TAG_BITMAP_LENGTH) __set_bit(i, bitmap); return (u16)i; } static u16 stex_alloc_tag(struct st_hba *hba, unsigned long *bitmap) { unsigned long flags; u16 tag; spin_lock_irqsave(hba->host->host_lock, flags); tag = __stex_alloc_tag(bitmap); spin_unlock_irqrestore(hba->host->host_lock, flags); return tag; } static void __stex_free_tag(unsigned long *bitmap, u16 tag) { __clear_bit((int)tag, bitmap); } static void stex_free_tag(struct st_hba *hba, unsigned long *bitmap, u16 tag) { unsigned long flags; spin_lock_irqsave(hba->host->host_lock, flags); __stex_free_tag(bitmap, tag); spin_unlock_irqrestore(hba->host->host_lock, flags); } static struct status_msg *stex_get_status(struct st_hba *hba) { struct status_msg *status = hba->status_buffer + hba->status_tail; ++hba->status_tail; hba->status_tail %= MU_STATUS_COUNT; return status; } static void stex_set_sense(struct scsi_cmnd *cmd, u8 sk, u8 asc, u8 ascq) { cmd->result = (DRIVER_SENSE << 24) | SAM_STAT_CHECK_CONDITION; cmd->sense_buffer[0] = 0x70; /* fixed format, current */ cmd->sense_buffer[2] = sk; cmd->sense_buffer[7] = 18 - 8; /* additional sense length */ cmd->sense_buffer[12] = asc; cmd->sense_buffer[13] = ascq; } static void stex_invalid_field(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)) { /* "Invalid field in cbd" */ stex_set_sense(cmd, ILLEGAL_REQUEST, 0x24, 0x0); done(cmd); } static struct req_msg *stex_alloc_req(struct st_hba *hba) { struct req_msg *req = ((struct req_msg *)hba->dma_mem) + hba->req_head; ++hba->req_head; hba->req_head %= MU_REQ_COUNT; return req; } static int stex_map_sg(struct st_hba *hba, struct req_msg *req, struct st_ccb *ccb) { struct pci_dev *pdev = hba->pdev; struct scsi_cmnd *cmd; dma_addr_t dma_handle; struct scatterlist *src; struct st_sgtable *dst; int i; cmd = ccb->cmd; dst = (struct st_sgtable *)req->variable; dst->max_sg_count = cpu_to_le16(ST_MAX_SG); dst->sz_in_byte = cpu_to_le32(cmd->request_bufflen); if (cmd->use_sg) { int n_elem; src = (struct scatterlist *) cmd->request_buffer; n_elem = pci_map_sg(pdev, src, cmd->use_sg, cmd->sc_data_direction); if (n_elem <= 0) return -EIO; ccb->sg_count = n_elem; dst->sg_count = cpu_to_le16((u16)n_elem); for (i = 0; i < n_elem; i++, src++) { dst->table[i].count = cpu_to_le32((u32)sg_dma_len(src)); dst->table[i].addr = cpu_to_le32(sg_dma_address(src) & 0xffffffff); dst->table[i].addr_hi = cpu_to_le32((sg_dma_address(src) >> 16) >> 16); dst->table[i].ctrl = SG_CF_64B | SG_CF_HOST; } dst->table[--i].ctrl |= SG_CF_EOT; return 0; } dma_handle = pci_map_single(pdev, cmd->request_buffer, cmd->request_bufflen, cmd->sc_data_direction); cmd->SCp.dma_handle = dma_handle; ccb->sg_count = 1; dst->sg_count = cpu_to_le16(1); dst->table[0].addr = cpu_to_le32(dma_handle & 0xffffffff); dst->table[0].addr_hi = cpu_to_le32((dma_handle >> 16) >> 16); dst->table[0].count = cpu_to_le32((u32)cmd->request_bufflen); dst->table[0].ctrl = SG_CF_EOT | SG_CF_64B | SG_CF_HOST; return 0; } static void stex_internal_copy(struct scsi_cmnd *cmd, const void *src, size_t *count, int sg_count) { size_t lcount; size_t len; void *s, *d, *base = NULL; if (*count > cmd->request_bufflen) *count = cmd->request_bufflen; lcount = *count; while (lcount) { len = lcount; s = (void *)src; if (cmd->use_sg) { size_t offset = *count - lcount; s += offset; base = scsi_kmap_atomic_sg(cmd->request_buffer, sg_count, &offset, &len); if (base == NULL) { *count -= lcount; return; } d = base + offset; } else d = cmd->request_buffer; memcpy(d, s, len); lcount -= len; if (cmd->use_sg) scsi_kunmap_atomic_sg(base); } } static int stex_direct_copy(struct scsi_cmnd *cmd, const void *src, size_t count) { struct st_hba *hba = (struct st_hba *) &cmd->device->host->hostdata[0]; size_t cp_len = count; int n_elem = 0; if (cmd->use_sg) { n_elem = pci_map_sg(hba->pdev, cmd->request_buffer, cmd->use_sg, cmd->sc_data_direction); if (n_elem <= 0) return 0; } stex_internal_copy(cmd, src, &cp_len, n_elem); if (cmd->use_sg) pci_unmap_sg(hba->pdev, cmd->request_buffer, cmd->use_sg, cmd->sc_data_direction); return cp_len == count; } static void stex_controller_info(struct st_hba *hba, struct st_ccb *ccb) { struct st_frame *p; size_t count = sizeof(struct st_frame); p = hba->copy_buffer; memset(p->base, 0, sizeof(u32)*6); *(unsigned long *)(p->base) = pci_resource_start(hba->pdev, 0); p->rom_addr = 0; p->drv_ver.major = ST_VER_MAJOR; p->drv_ver.minor = ST_VER_MINOR; p->drv_ver.oem = ST_OEM; p->drv_ver.build = ST_BUILD_VER; p->bus = hba->pdev->bus->number; p->slot = hba->pdev->devfn; p->irq_level = 0; p->irq_vec = hba->pdev->irq; p->id = hba->pdev->vendor << 16 | hba->pdev->device; p->subid = hba->pdev->subsystem_vendor << 16 | hba->pdev->subsystem_device; stex_internal_copy(ccb->cmd, p, &count, ccb->sg_count); } static void stex_send_cmd(struct st_hba *hba, struct req_msg *req, u16 tag) { req->tag = cpu_to_le16(tag); req->task_attr = TASK_ATTRIBUTE_SIMPLE; req->task_manage = 0; /* not supported yet */ req->payload_sz = (u8)(sizeof(struct req_msg)/sizeof(u32)); hba->ccb[tag].req = req; hba->out_req_cnt++; writel(hba->req_head, hba->mmio_base + IMR0); writel(MU_INBOUND_DOORBELL_REQHEADCHANGED, hba->mmio_base + IDBL); readl(hba->mmio_base + IDBL); /* flush */ } static int stex_slave_config(struct scsi_device *sdev) { sdev->use_10_for_rw = 1; sdev->use_10_for_ms = 1; sdev->timeout = 60 * HZ; return 0; } static void stex_slave_destroy(struct scsi_device *sdev) { struct st_hba *hba = (struct st_hba *) sdev->host->hostdata; struct req_msg *req; unsigned long flags; unsigned long before; u16 tag; if (sdev->type != TYPE_DISK) return; before = jiffies; while ((tag = stex_alloc_tag(hba, (unsigned long *)&hba->tag)) == TAG_BITMAP_LENGTH) { if (time_after(jiffies, before + ST_INTERNAL_TIMEOUT * HZ)) return; msleep(10); } spin_lock_irqsave(hba->host->host_lock, flags); req = stex_alloc_req(hba); memset(req->cdb, 0, STEX_CDB_LENGTH); req->target = sdev->id; req->lun = sdev->channel; /* firmware lun issue work around */ req->cdb[0] = SYNCHRONIZE_CACHE; hba->ccb[tag].cmd = NULL; hba->ccb[tag].sg_count = 0; hba->ccb[tag].sense_bufflen = 0; hba->ccb[tag].sense_buffer = NULL; hba->ccb[tag].req_type |= PASSTHRU_REQ_TYPE; stex_send_cmd(hba, req, tag); spin_unlock_irqrestore(hba->host->host_lock, flags); wait_event_timeout(hba->waitq, !(hba->ccb[tag].req_type), ST_INTERNAL_TIMEOUT * HZ); if (hba->ccb[tag].req_type & PASSTHRU_REQ_TYPE) return; stex_free_tag(hba, (unsigned long *)&hba->tag, tag); } static int stex_queuecommand(struct scsi_cmnd *cmd, void (* done)(struct scsi_cmnd *)) { struct st_hba *hba; struct Scsi_Host *host; unsigned int id,lun; struct req_msg *req; u16 tag; host = cmd->device->host; id = cmd->device->id; lun = cmd->device->channel; /* firmware lun issue work around */ hba = (struct st_hba *) &host->hostdata[0]; switch (cmd->cmnd[0]) { case MODE_SENSE_10: { static char ms10_caching_page[12] = { 0, 0x12, 0, 0, 0, 0, 0, 0, 0x8, 0xa, 0x4, 0 }; unsigned char page; page = cmd->cmnd[2] & 0x3f; if (page == 0x8 || page == 0x3f) { stex_direct_copy(cmd, ms10_caching_page, sizeof(ms10_caching_page)); cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8; done(cmd); } else stex_invalid_field(cmd, done); return 0; } case INQUIRY: if (id != ST_MAX_ARRAY_SUPPORTED) break; if (lun == 0 && (cmd->cmnd[1] & INQUIRY_EVPD) == 0) { stex_direct_copy(cmd, console_inq_page, sizeof(console_inq_page)); cmd->result = DID_OK << 16 | COMMAND_COMPLETE << 8; done(cmd); } else stex_invalid_field(cmd, done); return 0; case PASSTHRU_CMD: if (cmd->cmnd[1] == PASSTHRU_GET_DRVVER) { struct st_drvver ver; ver.major = ST_VER_MAJOR; ver.minor = ST_VER_MINOR; ver.oem = ST_OEM; ver.build = ST_BUILD_VER; ver.signature[0] = PASSTHRU_SIGNATURE; ver.console_id = ST_MAX_ARRAY_SUPPORTED; ver.host_no = hba->host->host_no; cmd->result = stex_direct_copy(cmd, &ver, sizeof(ver)) ? DID_OK << 16 | COMMAND_COMPLETE << 8 : DID_ERROR << 16 | COMMAND_COMPLETE << 8; done(cmd); return 0; } default: break; } cmd->scsi_done = done; if (unlikely((tag = __stex_alloc_tag((unsigned long *)&hba->tag)) == TAG_BITMAP_LENGTH)) return SCSI_MLQUEUE_HOST_BUSY; req = stex_alloc_req(hba); req->lun = lun; req->target = id; /* cdb */ memcpy(req->cdb, cmd->cmnd, STEX_CDB_LENGTH); hba->ccb[tag].cmd = cmd; hba->ccb[tag].sense_bufflen = SCSI_SENSE_BUFFERSIZE; hba->ccb[tag].sense_buffer = cmd->sense_buffer; hba->ccb[tag].req_type = 0; if (cmd->sc_data_direction != DMA_NONE) stex_map_sg(hba, req, &hba->ccb[tag]); stex_send_cmd(hba, req, tag); return 0; } static void stex_unmap_sg(struct st_hba *hba, struct scsi_cmnd *cmd) { if (cmd->sc_data_direction != DMA_NONE) { if (cmd->use_sg) pci_unmap_sg(hba->pdev, cmd->request_buffer, cmd->use_sg, cmd->sc_data_direction); else pci_unmap_single(hba->pdev, cmd->SCp.dma_handle, cmd->request_bufflen, cmd->sc_data_direction); } } static void stex_scsi_done(struct st_ccb *ccb) { struct scsi_cmnd *cmd = ccb->cmd; int result; if (ccb->srb_status == SRB_STATUS_SUCCESS || ccb->srb_status == 0) { result = ccb->scsi_status; switch (ccb->scsi_status) { case SAM_STAT_GOOD: result |= DID_OK << 16 | COMMAND_COMPLETE << 8; break; case SAM_STAT_CHECK_CONDITION: result |= DRIVER_SENSE << 24; break; case SAM_STAT_BUSY: result |= DID_BUS_BUSY << 16 | COMMAND_COMPLETE << 8; break; default: result |= DID_ERROR << 16 | COMMAND_COMPLETE << 8; break; } } else if (ccb->srb_status & SRB_SEE_SENSE) result = DRIVER_SENSE << 24 | SAM_STAT_CHECK_CONDITION; else switch (ccb->srb_status) { case SRB_STATUS_SELECTION_TIMEOUT: result = DID_NO_CONNECT << 16 | COMMAND_COMPLETE << 8; break; case SRB_STATUS_BUSY: result = DID_BUS_BUSY << 16 | COMMAND_COMPLETE << 8; break; case SRB_STATUS_INVALID_REQUEST: case SRB_STATUS_ERROR: default: result = DID_ERROR << 16 | COMMAND_COMPLETE << 8; break; } cmd->result = result; cmd->scsi_done(cmd); } static void stex_copy_data(struct st_ccb *ccb, struct status_msg *resp, unsigned int variable) { size_t count = variable; if (resp->scsi_status != SAM_STAT_GOOD) { if (ccb->sense_buffer != NULL) memcpy(ccb->sense_buffer, resp->variable, min(variable, ccb->sense_bufflen)); return; } if (ccb->cmd == NULL) return; stex_internal_copy(ccb->cmd, resp->variable, &count, ccb->sg_count); } static void stex_mu_intr(struct st_hba *hba, u32 doorbell) { void __iomem *base = hba->mmio_base; struct status_msg *resp; struct st_ccb *ccb; unsigned int size; u16 tag; if (!(doorbell & MU_OUTBOUND_DOORBELL_STATUSHEADCHANGED)) return; /* status payloads */ hba->status_head = readl(base + OMR1); if (unlikely(hba->status_head >= MU_STATUS_COUNT)) { printk(KERN_WARNING DRV_NAME "(%s): invalid status head\n", pci_name(hba->pdev)); return; } if (unlikely(hba->mu_status != MU_STATE_STARTED || hba->out_req_cnt <= 0)) { hba->status_tail = hba->status_head; goto update_status; } while (hba->status_tail != hba->status_head) { resp = stex_get_status(hba); tag = le16_to_cpu(resp->tag); if (unlikely(tag >= TAG_BITMAP_LENGTH)) { printk(KERN_WARNING DRV_NAME "(%s): invalid tag\n", pci_name(hba->pdev)); continue; } if (unlikely((hba->tag & (1 << tag)) == 0)) { printk(KERN_WARNING DRV_NAME "(%s): null tag\n", pci_name(hba->pdev)); continue; } hba->out_req_cnt--; ccb = &hba->ccb[tag]; if (hba->wait_ccb == ccb) hba->wait_ccb = NULL; if (unlikely(ccb->req == NULL)) { printk(KERN_WARNING DRV_NAME "(%s): lagging req\n", pci_name(hba->pdev)); __stex_free_tag((unsigned long *)&hba->tag, tag); stex_unmap_sg(hba, ccb->cmd); /* ??? */ continue; } size = resp->payload_sz * sizeof(u32); /* payload size */ if (unlikely(size < sizeof(*resp) - STATUS_VAR_LEN || size > sizeof(*resp))) { printk(KERN_WARNING DRV_NAME "(%s): bad status size\n", pci_name(hba->pdev)); } else { size -= sizeof(*resp) - STATUS_VAR_LEN; /* copy size */ if (size) stex_copy_data(ccb, resp, size); } ccb->srb_status = resp->srb_status; ccb->scsi_status = resp->scsi_status; if (ccb->req_type & PASSTHRU_REQ_TYPE) { if (ccb->req_type & PASSTHRU_REQ_NO_WAKEUP) { ccb->req_type = 0; continue; } ccb->req_type = 0; if (waitqueue_active(&hba->waitq)) wake_up(&hba->waitq); continue; } if (ccb->cmd->cmnd[0] == PASSTHRU_CMD && ccb->cmd->cmnd[1] == PASSTHRU_GET_ADAPTER) stex_controller_info(hba, ccb); __stex_free_tag((unsigned long *)&hba->tag, tag); stex_unmap_sg(hba, ccb->cmd); stex_scsi_done(ccb); } update_status: writel(hba->status_head, base + IMR1); readl(base + IMR1); /* flush */ } static irqreturn_t stex_intr(int irq, void *__hba, struct pt_regs *regs) { struct st_hba *hba = __hba; void __iomem *base = hba->mmio_base; u32 data; unsigned long flags; int handled = 0; spin_lock_irqsave(hba->host->host_lock, flags); data = readl(base + ODBL); if (data && data != 0xffffffff) { /* clear the interrupt */ writel(data, base + ODBL); readl(base + ODBL); /* flush */ stex_mu_intr(hba, data); handled = 1; } spin_unlock_irqrestore(hba->host->host_lock, flags); return IRQ_RETVAL(handled); } static int stex_handshake(struct st_hba *hba) { void __iomem *base = hba->mmio_base; struct handshake_frame *h; dma_addr_t status_phys; int i; if (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) { writel(MU_INBOUND_DOORBELL_HANDSHAKE, base + IDBL); readl(base + IDBL); for (i = 0; readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE && i < MU_MAX_DELAY_TIME; i++) { rmb(); msleep(1); } if (i == MU_MAX_DELAY_TIME) { printk(KERN_ERR DRV_NAME "(%s): no handshake signature\n", pci_name(hba->pdev)); return -1; } } udelay(10); h = (struct handshake_frame *)(hba->dma_mem + MU_REQ_BUFFER_SIZE); h->rb_phy = cpu_to_le32(hba->dma_handle); h->rb_phy_hi = cpu_to_le32((hba->dma_handle >> 16) >> 16); h->req_sz = cpu_to_le16(sizeof(struct req_msg)); h->req_cnt = cpu_to_le16(MU_REQ_COUNT); h->status_sz = cpu_to_le16(sizeof(struct status_msg)); h->status_cnt = cpu_to_le16(MU_STATUS_COUNT); stex_gettime(&h->hosttime); h->partner_type = HMU_PARTNER_TYPE; status_phys = hba->dma_handle + MU_REQ_BUFFER_SIZE; writel(status_phys, base + IMR0); readl(base + IMR0); writel((status_phys >> 16) >> 16, base + IMR1); readl(base + IMR1); writel((status_phys >> 16) >> 16, base + OMR0); /* old fw compatible */ readl(base + OMR0); writel(MU_INBOUND_DOORBELL_HANDSHAKE, base + IDBL); readl(base + IDBL); /* flush */ udelay(10); for (i = 0; readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE && i < MU_MAX_DELAY_TIME; i++) { rmb(); msleep(1); } if (i == MU_MAX_DELAY_TIME) { printk(KERN_ERR DRV_NAME "(%s): no signature after handshake frame\n", pci_name(hba->pdev)); return -1; } writel(0, base + IMR0); readl(base + IMR0); writel(0, base + OMR0); readl(base + OMR0); writel(0, base + IMR1); readl(base + IMR1); writel(0, base + OMR1); readl(base + OMR1); /* flush */ hba->mu_status = MU_STATE_STARTED; return 0; } static int stex_abort(struct scsi_cmnd *cmd) { struct Scsi_Host *host = cmd->device->host; struct st_hba *hba = (struct st_hba *)host->hostdata; u16 tag; void __iomem *base; u32 data; int result = SUCCESS; unsigned long flags; base = hba->mmio_base; spin_lock_irqsave(host->host_lock, flags); for (tag = 0; tag < MU_MAX_REQUEST; tag++) if (hba->ccb[tag].cmd == cmd && (hba->tag & (1 << tag))) { hba->wait_ccb = &(hba->ccb[tag]); break; } if (tag >= MU_MAX_REQUEST) goto out; data = readl(base + ODBL); if (data == 0 || data == 0xffffffff) goto fail_out; writel(data, base + ODBL); readl(base + ODBL); /* flush */ stex_mu_intr(hba, data); if (hba->wait_ccb == NULL) { printk(KERN_WARNING DRV_NAME "(%s): lost interrupt\n", pci_name(hba->pdev)); goto out; } fail_out: hba->wait_ccb->req = NULL; /* nullify the req's future return */ hba->wait_ccb = NULL; result = FAILED; out: spin_unlock_irqrestore(host->host_lock, flags); return result; } static void stex_hard_reset(struct st_hba *hba) { struct pci_bus *bus; int i; u16 pci_cmd; u8 pci_bctl; for (i = 0; i < 16; i++) pci_read_config_dword(hba->pdev, i * 4, &hba->pdev->saved_config_space[i]); /* Reset secondary bus. Our controller(MU/ATU) is the only device on secondary bus. Consult Intel 80331/3 developer's manual for detail */ bus = hba->pdev->bus; pci_read_config_byte(bus->self, PCI_BRIDGE_CONTROL, &pci_bctl); pci_bctl |= PCI_BRIDGE_CTL_BUS_RESET; pci_write_config_byte(bus->self, PCI_BRIDGE_CONTROL, pci_bctl); msleep(1); pci_bctl &= ~PCI_BRIDGE_CTL_BUS_RESET; pci_write_config_byte(bus->self, PCI_BRIDGE_CONTROL, pci_bctl); for (i = 0; i < MU_MAX_DELAY_TIME; i++) { pci_read_config_word(hba->pdev, PCI_COMMAND, &pci_cmd); if (pci_cmd & PCI_COMMAND_MASTER) break; msleep(1); } ssleep(5); for (i = 0; i < 16; i++) pci_write_config_dword(hba->pdev, i * 4, hba->pdev->saved_config_space[i]); } static int stex_reset(struct scsi_cmnd *cmd) { struct st_hba *hba; unsigned long flags; hba = (struct st_hba *) &cmd->device->host->hostdata[0]; hba->mu_status = MU_STATE_RESETTING; if (hba->cardtype == st_shasta) stex_hard_reset(hba); if (stex_handshake(hba)) { printk(KERN_WARNING DRV_NAME "(%s): resetting: handshake failed\n", pci_name(hba->pdev)); return FAILED; } spin_lock_irqsave(hba->host->host_lock, flags); hba->tag = 0; hba->req_head = 0; hba->req_tail = 0; hba->status_head = 0; hba->status_tail = 0; hba->out_req_cnt = 0; spin_unlock_irqrestore(hba->host->host_lock, flags); return SUCCESS; } static int stex_biosparam(struct scsi_device *sdev, struct block_device *bdev, sector_t capacity, int geom[]) { int heads = 255, sectors = 63, cylinders; if (capacity < 0x200000) { heads = 64; sectors = 32; } cylinders = sector_div(capacity, heads * sectors); geom[0] = heads; geom[1] = sectors; geom[2] = cylinders; return 0; } static struct scsi_host_template driver_template = { .module = THIS_MODULE, .name = DRV_NAME, .proc_name = DRV_NAME, .bios_param = stex_biosparam, .queuecommand = stex_queuecommand, .slave_configure = stex_slave_config, .slave_destroy = stex_slave_destroy, .eh_abort_handler = stex_abort, .eh_host_reset_handler = stex_reset, .can_queue = ST_CAN_QUEUE, .this_id = -1, .sg_tablesize = ST_MAX_SG, .cmd_per_lun = ST_CMD_PER_LUN, }; static int stex_set_dma_mask(struct pci_dev * pdev) { int ret; if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK) && !pci_set_consistent_dma_mask(pdev, DMA_64BIT_MASK)) return 0; ret = pci_set_dma_mask(pdev, DMA_32BIT_MASK); if (!ret) ret = pci_set_consistent_dma_mask(pdev, DMA_32BIT_MASK); return ret; } static int __devinit stex_probe(struct pci_dev *pdev, const struct pci_device_id *id) { struct st_hba *hba; struct Scsi_Host *host; int err; err = pci_enable_device(pdev); if (err) return err; pci_set_master(pdev); host = scsi_host_alloc(&driver_template, sizeof(struct st_hba)); if (!host) { printk(KERN_ERR DRV_NAME "(%s): scsi_host_alloc failed\n", pci_name(pdev)); err = -ENOMEM; goto out_disable; } hba = (struct st_hba *)host->hostdata; memset(hba, 0, sizeof(struct st_hba)); err = pci_request_regions(pdev, DRV_NAME); if (err < 0) { printk(KERN_ERR DRV_NAME "(%s): request regions failed\n", pci_name(pdev)); goto out_scsi_host_put; } hba->mmio_base = ioremap(pci_resource_start(pdev, 0), pci_resource_len(pdev, 0)); if ( !hba->mmio_base) { printk(KERN_ERR DRV_NAME "(%s): memory map failed\n", pci_name(pdev)); err = -ENOMEM; goto out_release_regions; } err = stex_set_dma_mask(pdev); if (err) { printk(KERN_ERR DRV_NAME "(%s): set dma mask failed\n", pci_name(pdev)); goto out_iounmap; } hba->dma_mem = dma_alloc_coherent(&pdev->dev, STEX_BUFFER_SIZE, &hba->dma_handle, GFP_KERNEL); if (!hba->dma_mem) { err = -ENOMEM; printk(KERN_ERR DRV_NAME "(%s): dma mem alloc failed\n", pci_name(pdev)); goto out_iounmap; } hba->status_buffer = (struct status_msg *)(hba->dma_mem + MU_REQ_BUFFER_SIZE); hba->copy_buffer = hba->dma_mem + MU_BUFFER_SIZE; hba->mu_status = MU_STATE_STARTING; hba->cardtype = (unsigned int) id->driver_data; /* firmware uses id/lun pair for a logical drive, but lun would be always 0 if CONFIG_SCSI_MULTI_LUN not configured, so we use channel to map lun here */ host->max_channel = ST_MAX_LUN_PER_TARGET - 1; host->max_id = ST_MAX_TARGET_NUM; host->max_lun = 1; host->unique_id = host->host_no; host->max_cmd_len = STEX_CDB_LENGTH; hba->host = host; hba->pdev = pdev; init_waitqueue_head(&hba->waitq); err = request_irq(pdev->irq, stex_intr, IRQF_SHARED, DRV_NAME, hba); if (err) { printk(KERN_ERR DRV_NAME "(%s): request irq failed\n", pci_name(pdev)); goto out_pci_free; } err = stex_handshake(hba); if (err) goto out_free_irq; pci_set_drvdata(pdev, hba); err = scsi_add_host(host, &pdev->dev); if (err) { printk(KERN_ERR DRV_NAME "(%s): scsi_add_host failed\n", pci_name(pdev)); goto out_free_irq; } scsi_scan_host(host); return 0; out_free_irq: free_irq(pdev->irq, hba); out_pci_free: dma_free_coherent(&pdev->dev, STEX_BUFFER_SIZE, hba->dma_mem, hba->dma_handle); out_iounmap: iounmap(hba->mmio_base); out_release_regions: pci_release_regions(pdev); out_scsi_host_put: scsi_host_put(host); out_disable: pci_disable_device(pdev); return err; } static void stex_hba_stop(struct st_hba *hba) { struct req_msg *req; unsigned long flags; unsigned long before; u16 tag; before = jiffies; while ((tag = stex_alloc_tag(hba, (unsigned long *)&hba->tag)) == TAG_BITMAP_LENGTH) { if (time_after(jiffies, before + ST_INTERNAL_TIMEOUT * HZ)) return; msleep(10); } spin_lock_irqsave(hba->host->host_lock, flags); req = stex_alloc_req(hba); memset(req->cdb, 0, STEX_CDB_LENGTH); req->cdb[0] = CONTROLLER_CMD; req->cdb[1] = CTLR_POWER_STATE_CHANGE; req->cdb[2] = CTLR_POWER_SAVING; hba->ccb[tag].cmd = NULL; hba->ccb[tag].sg_count = 0; hba->ccb[tag].sense_bufflen = 0; hba->ccb[tag].sense_buffer = NULL; hba->ccb[tag].req_type |= PASSTHRU_REQ_TYPE; stex_send_cmd(hba, req, tag); spin_unlock_irqrestore(hba->host->host_lock, flags); wait_event_timeout(hba->waitq, !(hba->ccb[tag].req_type), ST_INTERNAL_TIMEOUT * HZ); if (hba->ccb[tag].req_type & PASSTHRU_REQ_TYPE) return; stex_free_tag(hba, (unsigned long *)&hba->tag, tag); } static void stex_hba_free(struct st_hba *hba) { free_irq(hba->pdev->irq, hba); iounmap(hba->mmio_base); pci_release_regions(hba->pdev); dma_free_coherent(&hba->pdev->dev, STEX_BUFFER_SIZE, hba->dma_mem, hba->dma_handle); } static void stex_remove(struct pci_dev *pdev) { struct st_hba *hba = pci_get_drvdata(pdev); scsi_remove_host(hba->host); pci_set_drvdata(pdev, NULL); stex_hba_stop(hba); stex_hba_free(hba); scsi_host_put(hba->host); pci_disable_device(pdev); } static void stex_shutdown(struct pci_dev *pdev) { struct st_hba *hba = pci_get_drvdata(pdev); stex_hba_stop(hba); } static struct pci_device_id stex_pci_tbl[] = { { 0x105a, 0x8350, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_shasta }, { 0x105a, 0xc350, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_shasta }, { 0x105a, 0xf350, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_shasta }, { 0x105a, 0x4301, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_shasta }, { 0x105a, 0x4302, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_shasta }, { 0x105a, 0x8301, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_shasta }, { 0x105a, 0x8302, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_shasta }, { 0x1725, 0x7250, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_vsc }, { } /* terminate list */ }; MODULE_DEVICE_TABLE(pci, stex_pci_tbl); static struct pci_driver stex_pci_driver = { .name = DRV_NAME, .id_table = stex_pci_tbl, .probe = stex_probe, .remove = __devexit_p(stex_remove), .shutdown = stex_shutdown, }; static int __init stex_init(void) { printk(KERN_INFO DRV_NAME ": Promise SuperTrak EX Driver version: %s\n", ST_DRIVER_VERSION); return pci_register_driver(&stex_pci_driver); } static void __exit stex_exit(void) { pci_unregister_driver(&stex_pci_driver); } module_init(stex_init); module_exit(stex_exit);