| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Jeff Garzik | 4577 | 44.54% | 2 | 3.45% |
| Ed Lin | 4216 | 41.02% | 26 | 44.83% |
| Charles | 1296 | 12.61% | 5 | 8.62% |
| FUJITA Tomonori | 55 | 0.54% | 4 | 6.90% |
| Christoph Hellwig | 35 | 0.34% | 3 | 5.17% |
| Hannes Reinecke | 30 | 0.29% | 4 | 6.90% |
| Bart Van Assche | 23 | 0.22% | 4 | 6.90% |
| Linus Torvalds | 19 | 0.18% | 2 | 3.45% |
| Tina Ruchandani | 13 | 0.13% | 1 | 1.72% |
| James Bottomley | 5 | 0.05% | 1 | 1.72% |
| Gustavo A. R. Silva | 2 | 0.02% | 2 | 3.45% |
| Thomas Gleixner | 2 | 0.02% | 1 | 1.72% |
| Linus Torvalds (pre-git) | 2 | 0.02% | 1 | 1.72% |
| Colin Ian King | 1 | 0.01% | 1 | 1.72% |
| Arjan van de Ven | 1 | 0.01% | 1 | 1.72% |
| Total | 10277 | 58 |
// SPDX-License-Identifier: GPL-2.0-or-later /* * SuperTrak EX Series Storage Controller driver for Linux * * Copyright (C) 2005-2015 Promise Technology Inc. * * Written By: * Ed Lin <promise_linux@promise.com> */ #include <linux/init.h> #include <linux/errno.h> #include <linux/kernel.h> #include <linux/delay.h> #include <linux/slab.h> #include <linux/time.h> #include <linux/pci.h> #include <linux/blkdev.h> #include <linux/interrupt.h> #include <linux/types.h> #include <linux/module.h> #include <linux/spinlock.h> #include <linux/ktime.h> #include <linux/reboot.h> #include <asm/io.h> #include <asm/irq.h> #include <asm/byteorder.h> #include <scsi/scsi.h> #include <scsi/scsi_device.h> #include <scsi/scsi_cmnd.h> #include <scsi/scsi_host.h> #include <scsi/scsi_tcq.h> #include <scsi/scsi_dbg.h> #include <scsi/scsi_eh.h> #define DRV_NAME "stex" #define ST_DRIVER_VERSION "6.02.0000.01" #define ST_VER_MAJOR 6 #define ST_VER_MINOR 02 #define ST_OEM 0000 #define ST_BUILD_VER 01 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 */ YIOA_STATUS = 0x00, YH2I_INT = 0x20, YINT_EN = 0x34, YI2H_INT = 0x9c, YI2H_INT_C = 0xa0, YH2I_REQ = 0xc0, YH2I_REQ_HI = 0xc4, PSCRATCH0 = 0xb0, PSCRATCH1 = 0xb4, PSCRATCH2 = 0xb8, PSCRATCH3 = 0xbc, PSCRATCH4 = 0xc8, MAILBOX_BASE = 0x1000, MAILBOX_HNDSHK_STS = 0x0, /* MU register value */ MU_INBOUND_DOORBELL_HANDSHAKE = (1 << 0), MU_INBOUND_DOORBELL_REQHEADCHANGED = (1 << 1), MU_INBOUND_DOORBELL_STATUSTAILCHANGED = (1 << 2), MU_INBOUND_DOORBELL_HMUSTOPPED = (1 << 3), MU_INBOUND_DOORBELL_RESET = (1 << 4), MU_OUTBOUND_DOORBELL_HANDSHAKE = (1 << 0), MU_OUTBOUND_DOORBELL_REQUESTTAILCHANGED = (1 << 1), MU_OUTBOUND_DOORBELL_STATUSHEADCHANGED = (1 << 2), MU_OUTBOUND_DOORBELL_BUSCHANGE = (1 << 3), MU_OUTBOUND_DOORBELL_HASEVENT = (1 << 4), MU_OUTBOUND_DOORBELL_REQUEST_RESET = (1 << 27), /* MU status code */ MU_STATE_STARTING = 1, MU_STATE_STARTED = 2, MU_STATE_RESETTING = 3, MU_STATE_FAILED = 4, MU_STATE_STOP = 5, MU_STATE_NOCONNECT = 6, MU_MAX_DELAY = 50, MU_HANDSHAKE_SIGNATURE = 0x55aaaa55, MU_HANDSHAKE_SIGNATURE_HALF = 0x5a5a0000, MU_HARD_RESET_WAIT = 30000, 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, }; enum { SS_STS_NORMAL = 0x80000000, SS_STS_DONE = 0x40000000, SS_STS_HANDSHAKE = 0x20000000, SS_HEAD_HANDSHAKE = 0x80, SS_H2I_INT_RESET = 0x100, SS_I2H_REQUEST_RESET = 0x2000, SS_MU_OPERATIONAL = 0x80000000, }; enum { STEX_CDB_LENGTH = 16, STATUS_VAR_LEN = 128, /* sg flags */ SG_CF_EOT = 0x80, /* end of table */ SG_CF_64B = 0x40, /* 64 bit item */ SG_CF_HOST = 0x20, /* sg in host memory */ MSG_DATA_DIR_ND = 0, MSG_DATA_DIR_IN = 1, MSG_DATA_DIR_OUT = 2, st_shasta = 0, st_vsc = 1, st_yosemite = 2, st_seq = 3, st_yel = 4, st_P3 = 5, PASSTHRU_REQ_TYPE = 0x00000001, PASSTHRU_REQ_NO_WAKEUP = 0x00000100, ST_INTERNAL_TIMEOUT = 180, ST_TO_CMD = 0, ST_FROM_CMD = 1, /* vendor specific commands of Promise */ MGT_CMD = 0xd8, SINBAND_MGT_CMD = 0xd9, ARRAY_CMD = 0xe0, CONTROLLER_CMD = 0xe1, DEBUGGING_CMD = 0xe2, PASSTHRU_CMD = 0xe3, PASSTHRU_GET_ADAPTER = 0x05, PASSTHRU_GET_DRVVER = 0x10, CTLR_CONFIG_CMD = 0x03, CTLR_SHUTDOWN = 0x0d, CTLR_POWER_STATE_CHANGE = 0x0e, CTLR_POWER_SAVING = 0x01, PASSTHRU_SIGNATURE = 0x4e415041, MGT_CMD_SIGNATURE = 0xba, INQUIRY_EVPD = 0x01, ST_ADDITIONAL_MEM = 0x200000, ST_ADDITIONAL_MEM_MIN = 0x80000, PMIC_SHUTDOWN = 0x0D, PMIC_REUMSE = 0x10, ST_IGNORED = -1, ST_NOTHANDLED = 7, ST_S3 = 3, ST_S4 = 4, ST_S5 = 5, ST_S6 = 6, }; struct st_sgitem { u8 ctrl; /* SG_CF_xxx */ u8 reserved[3]; __le32 count; __le64 addr; }; struct st_ss_sgitem { __le32 addr; __le32 addr_hi; __le32 count; }; struct st_sgtable { __le16 sg_count; __le16 max_sg_count; __le32 sz_in_byte; }; struct st_msg_header { __le64 handle; u8 flag; u8 channel; __le16 timeout; u32 reserved; }; struct handshake_frame { __le64 rb_phy; /* request payload queue physical address */ __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 */ __le64 hosttime; /* seconds from Jan 1, 1970 (GMT) */ 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; __le32 extra_offset; /* NEW */ __le32 extra_size; /* NEW */ __le32 scratch_size; u32 reserved1; }; struct req_msg { __le16 tag; u8 lun; u8 target; u8 task_attr; u8 task_manage; u8 data_dir; u8 payload_sz; /* payload size in 4-byte, not used */ u8 cdb[STEX_CDB_LENGTH]; u32 variable[]; }; 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]; }; 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; u8 reserved[2]; }; struct st_hba { void __iomem *mmio_base; /* iomapped PCI memory space */ void *dma_mem; dma_addr_t dma_handle; size_t dma_size; struct Scsi_Host *host; struct pci_dev *pdev; struct req_msg * (*alloc_rq) (struct st_hba *); int (*map_sg)(struct st_hba *, struct req_msg *, struct st_ccb *); void (*send) (struct st_hba *, struct req_msg *, u16); 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; struct st_ccb *wait_ccb; __le32 *scratch; char work_q_name[20]; struct workqueue_struct *work_q; struct work_struct reset_work; wait_queue_head_t reset_waitq; unsigned int mu_status; unsigned int cardtype; int msi_enabled; int out_req_cnt; u32 extra_offset; u16 rq_count; u16 rq_size; u16 sts_count; u8 supports_pm; int msi_lock; }; struct st_card_info { struct req_msg * (*alloc_rq) (struct st_hba *); int (*map_sg)(struct st_hba *, struct req_msg *, struct st_ccb *); void (*send) (struct st_hba *, struct req_msg *, u16); unsigned int max_id; unsigned int max_lun; unsigned int max_channel; u16 rq_count; u16 rq_size; u16 sts_count; }; static int S6flag; static int stex_halt(struct notifier_block *nb, ulong event, void *buf); static struct notifier_block stex_notifier = { stex_halt, NULL, 0 }; static int msi; module_param(msi, int, 0); MODULE_PARM_DESC(msi, "Enable Message Signaled Interrupts(0=off, 1=on)"); 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 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 %= hba->sts_count+1; return status; } static void stex_invalid_field(struct scsi_cmnd *cmd, void (*done)(struct scsi_cmnd *)) { /* "Invalid field in cdb" */ scsi_build_sense(cmd, 0, ILLEGAL_REQUEST, 0x24, 0x0); done(cmd); } static struct req_msg *stex_alloc_req(struct st_hba *hba) { struct req_msg *req = hba->dma_mem + hba->req_head * hba->rq_size; ++hba->req_head; hba->req_head %= hba->rq_count+1; return req; } static struct req_msg *stex_ss_alloc_req(struct st_hba *hba) { return (struct req_msg *)(hba->dma_mem + hba->req_head * hba->rq_size + sizeof(struct st_msg_header)); } static int stex_map_sg(struct st_hba *hba, struct req_msg *req, struct st_ccb *ccb) { struct scsi_cmnd *cmd; struct scatterlist *sg; struct st_sgtable *dst; struct st_sgitem *table; int i, nseg; cmd = ccb->cmd; nseg = scsi_dma_map(cmd); BUG_ON(nseg < 0); if (nseg) { dst = (struct st_sgtable *)req->variable; ccb->sg_count = nseg; dst->sg_count = cpu_to_le16((u16)nseg); dst->max_sg_count = cpu_to_le16(hba->host->sg_tablesize); dst->sz_in_byte = cpu_to_le32(scsi_bufflen(cmd)); table = (struct st_sgitem *)(dst + 1); scsi_for_each_sg(cmd, sg, nseg, i) { table[i].count = cpu_to_le32((u32)sg_dma_len(sg)); table[i].addr = cpu_to_le64(sg_dma_address(sg)); table[i].ctrl = SG_CF_64B | SG_CF_HOST; } table[--i].ctrl |= SG_CF_EOT; } return nseg; } static int stex_ss_map_sg(struct st_hba *hba, struct req_msg *req, struct st_ccb *ccb) { struct scsi_cmnd *cmd; struct scatterlist *sg; struct st_sgtable *dst; struct st_ss_sgitem *table; int i, nseg; cmd = ccb->cmd; nseg = scsi_dma_map(cmd); BUG_ON(nseg < 0); if (nseg) { dst = (struct st_sgtable *)req->variable; ccb->sg_count = nseg; dst->sg_count = cpu_to_le16((u16)nseg); dst->max_sg_count = cpu_to_le16(hba->host->sg_tablesize); dst->sz_in_byte = cpu_to_le32(scsi_bufflen(cmd)); table = (struct st_ss_sgitem *)(dst + 1); scsi_for_each_sg(cmd, sg, nseg, i) { table[i].count = cpu_to_le32((u32)sg_dma_len(sg)); table[i].addr = cpu_to_le32(sg_dma_address(sg) & 0xffffffff); table[i].addr_hi = cpu_to_le32((sg_dma_address(sg) >> 16) >> 16); } } return nseg; } 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; scsi_sg_copy_to_buffer(ccb->cmd, p, count); 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; scsi_sg_copy_from_buffer(ccb->cmd, p, count); } static void stex_send_cmd(struct st_hba *hba, struct req_msg *req, u16 tag) { req->tag = cpu_to_le16(tag); 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 void stex_ss_send_cmd(struct st_hba *hba, struct req_msg *req, u16 tag) { struct scsi_cmnd *cmd; struct st_msg_header *msg_h; dma_addr_t addr; req->tag = cpu_to_le16(tag); hba->ccb[tag].req = req; hba->out_req_cnt++; cmd = hba->ccb[tag].cmd; msg_h = (struct st_msg_header *)req - 1; if (likely(cmd)) { msg_h->channel = (u8)cmd->device->channel; msg_h->timeout = cpu_to_le16(scsi_cmd_to_rq(cmd)->timeout / HZ); } addr = hba->dma_handle + hba->req_head * hba->rq_size; addr += (hba->ccb[tag].sg_count+4)/11; msg_h->handle = cpu_to_le64(addr); ++hba->req_head; hba->req_head %= hba->rq_count+1; if (hba->cardtype == st_P3) { writel((addr >> 16) >> 16, hba->mmio_base + YH2I_REQ_HI); writel(addr, hba->mmio_base + YH2I_REQ); } else { writel((addr >> 16) >> 16, hba->mmio_base + YH2I_REQ_HI); readl(hba->mmio_base + YH2I_REQ_HI); /* flush */ writel(addr, hba->mmio_base + YH2I_REQ); readl(hba->mmio_base + YH2I_REQ); /* flush */ } } static void return_abnormal_state(struct st_hba *hba, int status) { struct st_ccb *ccb; unsigned long flags; u16 tag; spin_lock_irqsave(hba->host->host_lock, flags); for (tag = 0; tag < hba->host->can_queue; tag++) { ccb = &hba->ccb[tag]; if (ccb->req == NULL) continue; ccb->req = NULL; if (ccb->cmd) { scsi_dma_unmap(ccb->cmd); ccb->cmd->result = status << 16; scsi_done(ccb->cmd); ccb->cmd = NULL; } } spin_unlock_irqrestore(hba->host->host_lock, flags); } static int stex_slave_config(struct scsi_device *sdev) { sdev->use_10_for_rw = 1; sdev->use_10_for_ms = 1; blk_queue_rq_timeout(sdev->request_queue, 60 * HZ); return 0; } static int stex_queuecommand_lck(struct scsi_cmnd *cmd) { void (*done)(struct scsi_cmnd *) = scsi_done; 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->lun; hba = (struct st_hba *) &host->hostdata[0]; if (hba->mu_status == MU_STATE_NOCONNECT) { cmd->result = DID_NO_CONNECT; done(cmd); return 0; } if (unlikely(hba->mu_status != MU_STATE_STARTED)) return SCSI_MLQUEUE_HOST_BUSY; 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) { scsi_sg_copy_from_buffer(cmd, ms10_caching_page, sizeof(ms10_caching_page)); cmd->result = DID_OK << 16; done(cmd); } else stex_invalid_field(cmd, done); return 0; } case REPORT_LUNS: /* * The shasta firmware does not report actual luns in the * target, so fail the command to force sequential lun scan. * Also, the console device does not support this command. */ if (hba->cardtype == st_shasta || id == host->max_id - 1) { stex_invalid_field(cmd, done); return 0; } break; case TEST_UNIT_READY: if (id == host->max_id - 1) { cmd->result = DID_OK << 16; done(cmd); return 0; } break; case INQUIRY: if (lun >= host->max_lun) { cmd->result = DID_NO_CONNECT << 16; done(cmd); return 0; } if (id != host->max_id - 1) break; if (!lun && !cmd->device->channel && (cmd->cmnd[1] & INQUIRY_EVPD) == 0) { scsi_sg_copy_from_buffer(cmd, (void *)console_inq_page, sizeof(console_inq_page)); cmd->result = DID_OK << 16; done(cmd); } else stex_invalid_field(cmd, done); return 0; case PASSTHRU_CMD: if (cmd->cmnd[1] == PASSTHRU_GET_DRVVER) { const struct st_drvver ver = { .major = ST_VER_MAJOR, .minor = ST_VER_MINOR, .oem = ST_OEM, .build = ST_BUILD_VER, .signature[0] = PASSTHRU_SIGNATURE, .console_id = host->max_id - 1, .host_no = hba->host->host_no, }; size_t cp_len = sizeof(ver); cp_len = scsi_sg_copy_from_buffer(cmd, &ver, cp_len); if (sizeof(ver) == cp_len) cmd->result = DID_OK << 16; else cmd->result = DID_ERROR << 16; done(cmd); return 0; } break; default: break; } tag = scsi_cmd_to_rq(cmd)->tag; if (unlikely(tag >= host->can_queue)) return SCSI_MLQUEUE_HOST_BUSY; req = hba->alloc_rq(hba); req->lun = lun; req->target = id; /* cdb */ memcpy(req->cdb, cmd->cmnd, STEX_CDB_LENGTH); if (cmd->sc_data_direction == DMA_FROM_DEVICE) req->data_dir = MSG_DATA_DIR_IN; else if (cmd->sc_data_direction == DMA_TO_DEVICE) req->data_dir = MSG_DATA_DIR_OUT; else req->data_dir = MSG_DATA_DIR_ND; hba->ccb[tag].cmd = cmd; hba->ccb[tag].sense_bufflen = SCSI_SENSE_BUFFERSIZE; hba->ccb[tag].sense_buffer = cmd->sense_buffer; if (!hba->map_sg(hba, req, &hba->ccb[tag])) { hba->ccb[tag].sg_count = 0; memset(&req->variable[0], 0, 8); } hba->send(hba, req, tag); return 0; } static DEF_SCSI_QCMD(stex_queuecommand) 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; break; case SAM_STAT_CHECK_CONDITION: result |= DID_OK << 16; break; case SAM_STAT_BUSY: result |= DID_BUS_BUSY << 16; break; default: result |= DID_ERROR << 16; break; } } else if (ccb->srb_status & SRB_SEE_SENSE) result = SAM_STAT_CHECK_CONDITION; else switch (ccb->srb_status) { case SRB_STATUS_SELECTION_TIMEOUT: result = DID_NO_CONNECT << 16; break; case SRB_STATUS_BUSY: result = DID_BUS_BUSY << 16; break; case SRB_STATUS_INVALID_REQUEST: case SRB_STATUS_ERROR: default: result = DID_ERROR << 16; break; } cmd->result = result; scsi_done(cmd); } static void stex_copy_data(struct st_ccb *ccb, struct status_msg *resp, unsigned int 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; scsi_sg_copy_from_buffer(ccb->cmd, resp->variable, variable); } static void stex_check_cmd(struct st_hba *hba, struct st_ccb *ccb, struct status_msg *resp) { if (ccb->cmd->cmnd[0] == MGT_CMD && resp->scsi_status != SAM_STAT_CHECK_CONDITION) scsi_set_resid(ccb->cmd, scsi_bufflen(ccb->cmd) - le32_to_cpu(*(__le32 *)&resp->variable[0])); } 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 (unlikely(!(doorbell & MU_OUTBOUND_DOORBELL_STATUSHEADCHANGED))) return; /* status payloads */ hba->status_head = readl(base + OMR1); if (unlikely(hba->status_head > hba->sts_count)) { printk(KERN_WARNING DRV_NAME "(%s): invalid status head\n", pci_name(hba->pdev)); return; } /* * it's not a valid status payload if: * 1. there are no pending requests(e.g. during init stage) * 2. there are some pending requests, but the controller is in * reset status, and its type is not st_yosemite * firmware of st_yosemite in reset status will return pending requests * to driver, so we allow it to pass */ if (unlikely(hba->out_req_cnt <= 0 || (hba->mu_status == MU_STATE_RESETTING && hba->cardtype != st_yosemite))) { 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 >= hba->host->can_queue)) { printk(KERN_WARNING DRV_NAME "(%s): invalid tag\n", pci_name(hba->pdev)); continue; } hba->out_req_cnt--; ccb = &hba->ccb[tag]; if (unlikely(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)); 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->req = NULL; ccb->srb_status = resp->srb_status; ccb->scsi_status = resp->scsi_status; if (likely(ccb->cmd != NULL)) { if (hba->cardtype == st_yosemite) stex_check_cmd(hba, ccb, resp); if (unlikely(ccb->cmd->cmnd[0] == PASSTHRU_CMD && ccb->cmd->cmnd[1] == PASSTHRU_GET_ADAPTER)) stex_controller_info(hba, ccb); scsi_dma_unmap(ccb->cmd); stex_scsi_done(ccb); } else ccb->req_type = 0; } update_status: writel(hba->status_head, base + IMR1); readl(base + IMR1); /* flush */ } static irqreturn_t stex_intr(int irq, void *__hba) { struct st_hba *hba = __hba; void __iomem *base = hba->mmio_base; u32 data; unsigned long flags; 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); spin_unlock_irqrestore(hba->host->host_lock, flags); if (unlikely(data & MU_OUTBOUND_DOORBELL_REQUEST_RESET && hba->cardtype == st_shasta)) queue_work(hba->work_q, &hba->reset_work); return IRQ_HANDLED; } spin_unlock_irqrestore(hba->host->host_lock, flags); return IRQ_NONE; } static void stex_ss_mu_intr(struct st_hba *hba) { struct status_msg *resp; struct st_ccb *ccb; __le32 *scratch; unsigned int size; int count = 0; u32 value; u16 tag; if (unlikely(hba->out_req_cnt <= 0 || hba->mu_status == MU_STATE_RESETTING)) return; while (count < hba->sts_count) { scratch = hba->scratch + hba->status_tail; value = le32_to_cpu(*scratch); if (unlikely(!(value & SS_STS_NORMAL))) return; resp = hba->status_buffer + hba->status_tail; *scratch = 0; ++count; ++hba->status_tail; hba->status_tail %= hba->sts_count+1; tag = (u16)value; if (unlikely(tag >= hba->host->can_queue)) { printk(KERN_WARNING DRV_NAME "(%s): invalid tag\n", pci_name(hba->pdev)); continue; } hba->out_req_cnt--; ccb = &hba->ccb[tag]; if (unlikely(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)); continue; } ccb->req = NULL; if (likely(value & SS_STS_DONE)) { /* normal case */ ccb->srb_status = SRB_STATUS_SUCCESS; ccb->scsi_status = SAM_STAT_GOOD; } else { ccb->srb_status = resp->srb_status; ccb->scsi_status = resp->scsi_status; size = resp->payload_sz * sizeof(u32); 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; if (size) stex_copy_data(ccb, resp, size); } if (likely(ccb->cmd != NULL)) stex_check_cmd(hba, ccb, resp); } if (likely(ccb->cmd != NULL)) { scsi_dma_unmap(ccb->cmd); stex_scsi_done(ccb); } else ccb->req_type = 0; } } static irqreturn_t stex_ss_intr(int irq, void *__hba) { struct st_hba *hba = __hba; void __iomem *base = hba->mmio_base; u32 data; unsigned long flags; spin_lock_irqsave(hba->host->host_lock, flags); if (hba->cardtype == st_yel) { data = readl(base + YI2H_INT); if (data && data != 0xffffffff) { /* clear the interrupt */ writel(data, base + YI2H_INT_C); stex_ss_mu_intr(hba); spin_unlock_irqrestore(hba->host->host_lock, flags); if (unlikely(data & SS_I2H_REQUEST_RESET)) queue_work(hba->work_q, &hba->reset_work); return IRQ_HANDLED; } } else { data = readl(base + PSCRATCH4); if (data != 0xffffffff) { if (data != 0) { /* clear the interrupt */ writel(data, base + PSCRATCH1); writel((1 << 22), base + YH2I_INT); } stex_ss_mu_intr(hba); spin_unlock_irqrestore(hba->host->host_lock, flags); if (unlikely(data & SS_I2H_REQUEST_RESET)) queue_work(hba->work_q, &hba->reset_work); return IRQ_HANDLED; } } spin_unlock_irqrestore(hba->host->host_lock, flags); return IRQ_NONE; } static int stex_common_handshake(struct st_hba *hba) { void __iomem *base = hba->mmio_base; struct handshake_frame *h; dma_addr_t status_phys; u32 data; unsigned long before; if (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) { writel(MU_INBOUND_DOORBELL_HANDSHAKE, base + IDBL); readl(base + IDBL); before = jiffies; while (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) { if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) { printk(KERN_ERR DRV_NAME "(%s): no handshake signature\n", pci_name(hba->pdev)); return -1; } rmb(); msleep(1); } } udelay(10); data = readl(base + OMR1); if ((data & 0xffff0000) == MU_HANDSHAKE_SIGNATURE_HALF) { data &= 0x0000ffff; if (hba->host->can_queue > data) { hba->host->can_queue = data; hba->host->cmd_per_lun = data; } } h = (struct handshake_frame *)hba->status_buffer; h->rb_phy = cpu_to_le64(hba->dma_handle); h->req_sz = cpu_to_le16(hba->rq_size); h->req_cnt = cpu_to_le16(hba->rq_count+1); h->status_sz = cpu_to_le16(sizeof(struct status_msg)); h->status_cnt = cpu_to_le16(hba->sts_count+1); h->hosttime = cpu_to_le64(ktime_get_real_seconds()); h->partner_type = HMU_PARTNER_TYPE; if (hba->extra_offset) { h->extra_offset = cpu_to_le32(hba->extra_offset); h->extra_size = cpu_to_le32(hba->dma_size - hba->extra_offset); } else h->extra_offset = h->extra_size = 0; status_phys = hba->dma_handle + (hba->rq_count+1) * hba->rq_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); before = jiffies; while (readl(base + OMR0) != MU_HANDSHAKE_SIGNATURE) { if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) { printk(KERN_ERR DRV_NAME "(%s): no signature after handshake frame\n", pci_name(hba->pdev)); return -1; } rmb(); msleep(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 */ return 0; } static int stex_ss_handshake(struct st_hba *hba) { void __iomem *base = hba->mmio_base; struct st_msg_header *msg_h; struct handshake_frame *h; __le32 *scratch; u32 data, scratch_size, mailboxdata, operationaldata; unsigned long before; int ret = 0; before = jiffies; if (hba->cardtype == st_yel) { operationaldata = readl(base + YIOA_STATUS); while (operationaldata != SS_MU_OPERATIONAL) { if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) { printk(KERN_ERR DRV_NAME "(%s): firmware not operational\n", pci_name(hba->pdev)); return -1; } msleep(1); operationaldata = readl(base + YIOA_STATUS); } } else { operationaldata = readl(base + PSCRATCH3); while (operationaldata != SS_MU_OPERATIONAL) { if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) { printk(KERN_ERR DRV_NAME "(%s): firmware not operational\n", pci_name(hba->pdev)); return -1; } msleep(1); operationaldata = readl(base + PSCRATCH3); } } msg_h = (struct st_msg_header *)hba->dma_mem; msg_h->handle = cpu_to_le64(hba->dma_handle); msg_h->flag = SS_HEAD_HANDSHAKE; h = (struct handshake_frame *)(msg_h + 1); h->rb_phy = cpu_to_le64(hba->dma_handle); h->req_sz = cpu_to_le16(hba->rq_size); h->req_cnt = cpu_to_le16(hba->rq_count+1); h->status_sz = cpu_to_le16(sizeof(struct status_msg)); h->status_cnt = cpu_to_le16(hba->sts_count+1); h->hosttime = cpu_to_le64(ktime_get_real_seconds()); h->partner_type = HMU_PARTNER_TYPE; h->extra_offset = h->extra_size = 0; scratch_size = (hba->sts_count+1)*sizeof(u32); h->scratch_size = cpu_to_le32(scratch_size); if (hba->cardtype == st_yel) { data = readl(base + YINT_EN); data &= ~4; writel(data, base + YINT_EN); writel((hba->dma_handle >> 16) >> 16, base + YH2I_REQ_HI); readl(base + YH2I_REQ_HI); writel(hba->dma_handle, base + YH2I_REQ); readl(base + YH2I_REQ); /* flush */ } else { data = readl(base + YINT_EN); data &= ~(1 << 0); data &= ~(1 << 2); writel(data, base + YINT_EN); if (hba->msi_lock == 0) { /* P3 MSI Register cannot access twice */ writel((1 << 6), base + YH2I_INT); hba->msi_lock = 1; } writel((hba->dma_handle >> 16) >> 16, base + YH2I_REQ_HI); writel(hba->dma_handle, base + YH2I_REQ); } before = jiffies; scratch = hba->scratch; if (hba->cardtype == st_yel) { while (!(le32_to_cpu(*scratch) & SS_STS_HANDSHAKE)) { if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) { printk(KERN_ERR DRV_NAME "(%s): no signature after handshake frame\n", pci_name(hba->pdev)); ret = -1; break; } rmb(); msleep(1); } } else { mailboxdata = readl(base + MAILBOX_BASE + MAILBOX_HNDSHK_STS); while (mailboxdata != SS_STS_HANDSHAKE) { if (time_after(jiffies, before + MU_MAX_DELAY * HZ)) { printk(KERN_ERR DRV_NAME "(%s): no signature after handshake frame\n", pci_name(hba->pdev)); ret = -1; break; } rmb(); msleep(1); mailboxdata = readl(base + MAILBOX_BASE + MAILBOX_HNDSHK_STS); } } memset(scratch, 0, scratch_size); msg_h->flag = 0; return ret; } static int stex_handshake(struct st_hba *hba) { int err; unsigned long flags; unsigned int mu_status; if (hba->cardtype == st_yel || hba->cardtype == st_P3) err = stex_ss_handshake(hba); else err = stex_common_handshake(hba); spin_lock_irqsave(hba->host->host_lock, flags); mu_status = hba->mu_status; if (err == 0) { hba->req_head = 0; hba->req_tail = 0; hba->status_head = 0; hba->status_tail = 0; hba->out_req_cnt = 0; hba->mu_status = MU_STATE_STARTED; } else hba->mu_status = MU_STATE_FAILED; if (mu_status == MU_STATE_RESETTING) wake_up_all(&hba->reset_waitq); spin_unlock_irqrestore(hba->host->host_lock, flags); return err; } 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 = scsi_cmd_to_rq(cmd)->tag; void __iomem *base; u32 data; int result = SUCCESS; unsigned long flags; scmd_printk(KERN_INFO, cmd, "aborting command\n"); base = hba->mmio_base; spin_lock_irqsave(host->host_lock, flags); if (tag < host->can_queue && hba->ccb[tag].req && hba->ccb[tag].cmd == cmd) hba->wait_ccb = &hba->ccb[tag]; else goto out; if (hba->cardtype == st_yel) { data = readl(base + YI2H_INT); if (data == 0 || data == 0xffffffff) goto fail_out; writel(data, base + YI2H_INT_C); stex_ss_mu_intr(hba); } else if (hba->cardtype == st_P3) { data = readl(base + PSCRATCH4); if (data == 0xffffffff) goto fail_out; if (data != 0) { writel(data, base + PSCRATCH1); writel((1 << 22), base + YH2I_INT); } stex_ss_mu_intr(hba); } else { 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: scsi_dma_unmap(cmd); 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); /* * 1 ms may be enough for 8-port controllers. But 16-port controllers * require more time to finish bus reset. Use 100 ms here for safety */ msleep(100); pci_bctl &= ~PCI_BRIDGE_CTL_BUS_RESET; pci_write_config_byte(bus->self, PCI_BRIDGE_CONTROL, pci_bctl); for (i = 0; i < MU_HARD_RESET_WAIT; i++) { pci_read_config_word(hba->pdev, PCI_COMMAND, &pci_cmd); if (pci_cmd != 0xffff && (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_yos_reset(struct st_hba *hba) { void __iomem *base; unsigned long flags, before; int ret = 0; base = hba->mmio_base; writel(MU_INBOUND_DOORBELL_RESET, base + IDBL); readl(base + IDBL); /* flush */ before = jiffies; while (hba->out_req_cnt > 0) { if (time_after(jiffies, before + ST_INTERNAL_TIMEOUT * HZ)) { printk(KERN_WARNING DRV_NAME "(%s): reset timeout\n", pci_name(hba->pdev)); ret = -1; break; } msleep(1); } spin_lock_irqsave(hba->host->host_lock, flags); if (ret == -1) hba->mu_status = MU_STATE_FAILED; else hba->mu_status = MU_STATE_STARTED; wake_up_all(&hba->reset_waitq); spin_unlock_irqrestore(hba->host->host_lock, flags); return ret; } static void stex_ss_reset(struct st_hba *hba) { writel(SS_H2I_INT_RESET, hba->mmio_base + YH2I_INT); readl(hba->mmio_base + YH2I_INT); ssleep(5); } static void stex_p3_reset(struct st_hba *hba) { writel(SS_H2I_INT_RESET, hba->mmio_base + YH2I_INT); ssleep(5); } static int stex_do_reset(struct st_hba *hba) { unsigned long flags; unsigned int mu_status = MU_STATE_RESETTING; spin_lock_irqsave(hba->host->host_lock, flags); if (hba->mu_status == MU_STATE_STARTING) { spin_unlock_irqrestore(hba->host->host_lock, flags); printk(KERN_INFO DRV_NAME "(%s): request reset during init\n", pci_name(hba->pdev)); return 0; } while (hba->mu_status == MU_STATE_RESETTING) { spin_unlock_irqrestore(hba->host->host_lock, flags); wait_event_timeout(hba->reset_waitq, hba->mu_status != MU_STATE_RESETTING, MU_MAX_DELAY * HZ); spin_lock_irqsave(hba->host->host_lock, flags); mu_status = hba->mu_status; } if (mu_status != MU_STATE_RESETTING) { spin_unlock_irqrestore(hba->host->host_lock, flags); return (mu_status == MU_STATE_STARTED) ? 0 : -1; } hba->mu_status = MU_STATE_RESETTING; spin_unlock_irqrestore(hba->host->host_lock, flags); if (hba->cardtype == st_yosemite) return stex_yos_reset(hba); if (hba->cardtype == st_shasta) stex_hard_reset(hba); else if (hba->cardtype == st_yel) stex_ss_reset(hba); else if (hba->cardtype == st_P3) stex_p3_reset(hba); return_abnormal_state(hba, DID_RESET); if (stex_handshake(hba) == 0) return 0; printk(KERN_WARNING DRV_NAME "(%s): resetting: handshake failed\n", pci_name(hba->pdev)); return -1; } static int stex_reset(struct scsi_cmnd *cmd) { struct st_hba *hba; hba = (struct st_hba *) &cmd->device->host->hostdata[0]; shost_printk(KERN_INFO, cmd->device->host, "resetting host\n"); return stex_do_reset(hba) ? FAILED : SUCCESS; } static void stex_reset_work(struct work_struct *work) { struct st_hba *hba = container_of(work, struct st_hba, reset_work); stex_do_reset(hba); } static int stex_biosparam(struct scsi_device *sdev, struct block_device *bdev, sector_t capacity, int geom[]) { int heads = 255, sectors = 63; if (capacity < 0x200000) { heads = 64; sectors = 32; } sector_div(capacity, heads * sectors); geom[0] = heads; geom[1] = sectors; geom[2] = capacity; return 0; } static const 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, .eh_abort_handler = stex_abort, .eh_host_reset_handler = stex_reset, .this_id = -1, .dma_boundary = PAGE_SIZE - 1, }; static struct pci_device_id stex_pci_tbl[] = { /* st_shasta */ { 0x105a, 0x8350, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_shasta }, /* SuperTrak EX8350/8300/16350/16300 */ { 0x105a, 0xc350, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_shasta }, /* SuperTrak EX12350 */ { 0x105a, 0x4302, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_shasta }, /* SuperTrak EX4350 */ { 0x105a, 0xe350, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_shasta }, /* SuperTrak EX24350 */ /* st_vsc */ { 0x105a, 0x7250, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_vsc }, /* st_yosemite */ { 0x105a, 0x8650, 0x105a, PCI_ANY_ID, 0, 0, st_yosemite }, /* st_seq */ { 0x105a, 0x3360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_seq }, /* st_yel */ { 0x105a, 0x8650, 0x1033, PCI_ANY_ID, 0, 0, st_yel }, { 0x105a, 0x8760, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_yel }, /* st_P3, pluto */ { PCI_VENDOR_ID_PROMISE, 0x8870, PCI_VENDOR_ID_PROMISE, 0x8870, 0, 0, st_P3 }, /* st_P3, p3 */ { PCI_VENDOR_ID_PROMISE, 0x8870, PCI_VENDOR_ID_PROMISE, 0x4300, 0, 0, st_P3 }, /* st_P3, SymplyStor4E */ { PCI_VENDOR_ID_PROMISE, 0x8871, PCI_VENDOR_ID_PROMISE, 0x4311, 0, 0, st_P3 }, /* st_P3, SymplyStor8E */ { PCI_VENDOR_ID_PROMISE, 0x8871, PCI_VENDOR_ID_PROMISE, 0x4312, 0, 0, st_P3 }, /* st_P3, SymplyStor4 */ { PCI_VENDOR_ID_PROMISE, 0x8871, PCI_VENDOR_ID_PROMISE, 0x4321, 0, 0, st_P3 }, /* st_P3, SymplyStor8 */ { PCI_VENDOR_ID_PROMISE, 0x8871, PCI_VENDOR_ID_PROMISE, 0x4322, 0, 0, st_P3 }, { } /* terminate list */ }; static struct st_card_info stex_card_info[] = { /* st_shasta */ { .max_id = 17, .max_lun = 8, .max_channel = 0, .rq_count = 32, .rq_size = 1048, .sts_count = 32, .alloc_rq = stex_alloc_req, .map_sg = stex_map_sg, .send = stex_send_cmd, }, /* st_vsc */ { .max_id = 129, .max_lun = 1, .max_channel = 0, .rq_count = 32, .rq_size = 1048, .sts_count = 32, .alloc_rq = stex_alloc_req, .map_sg = stex_map_sg, .send = stex_send_cmd, }, /* st_yosemite */ { .max_id = 2, .max_lun = 256, .max_channel = 0, .rq_count = 256, .rq_size = 1048, .sts_count = 256, .alloc_rq = stex_alloc_req, .map_sg = stex_map_sg, .send = stex_send_cmd, }, /* st_seq */ { .max_id = 129, .max_lun = 1, .max_channel = 0, .rq_count = 32, .rq_size = 1048, .sts_count = 32, .alloc_rq = stex_alloc_req, .map_sg = stex_map_sg, .send = stex_send_cmd, }, /* st_yel */ { .max_id = 129, .max_lun = 256, .max_channel = 3, .rq_count = 801, .rq_size = 512, .sts_count = 801, .alloc_rq = stex_ss_alloc_req, .map_sg = stex_ss_map_sg, .send = stex_ss_send_cmd, }, /* st_P3 */ { .max_id = 129, .max_lun = 256, .max_channel = 0, .rq_count = 801, .rq_size = 512, .sts_count = 801, .alloc_rq = stex_ss_alloc_req, .map_sg = stex_ss_map_sg, .send = stex_ss_send_cmd, }, }; static int stex_request_irq(struct st_hba *hba) { struct pci_dev *pdev = hba->pdev; int status; if (msi || hba->cardtype == st_P3) { status = pci_enable_msi(pdev); if (status != 0) printk(KERN_ERR DRV_NAME "(%s): error %d setting up MSI\n", pci_name(pdev), status); else hba->msi_enabled = 1; } else hba->msi_enabled = 0; status = request_irq(pdev->irq, (hba->cardtype == st_yel || hba->cardtype == st_P3) ? stex_ss_intr : stex_intr, IRQF_SHARED, DRV_NAME, hba); if (status != 0) { if (hba->msi_enabled) pci_disable_msi(pdev); } return status; } static void stex_free_irq(struct st_hba *hba) { struct pci_dev *pdev = hba->pdev; free_irq(pdev->irq, hba); if (hba->msi_enabled) pci_disable_msi(pdev); } static int stex_probe(struct pci_dev *pdev, const struct pci_device_id *id) { struct st_hba *hba; struct Scsi_Host *host; const struct st_card_info *ci = NULL; u32 sts_offset, cp_offset, scratch_offset; int err; err = pci_enable_device(pdev); if (err) return err; pci_set_master(pdev); S6flag = 0; register_reboot_notifier(&stex_notifier); 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 = pci_ioremap_bar(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 = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); if (err) err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(32)); if (err) { printk(KERN_ERR DRV_NAME "(%s): set dma mask failed\n", pci_name(pdev)); goto out_iounmap; } hba->cardtype = (unsigned int) id->driver_data; ci = &stex_card_info[hba->cardtype]; switch (id->subdevice) { case 0x4221: case 0x4222: case 0x4223: case 0x4224: case 0x4225: case 0x4226: case 0x4227: case 0x4261: case 0x4262: case 0x4263: case 0x4264: case 0x4265: break; default: if (hba->cardtype == st_yel || hba->cardtype == st_P3) hba->supports_pm = 1; } sts_offset = scratch_offset = (ci->rq_count+1) * ci->rq_size; if (hba->cardtype == st_yel || hba->cardtype == st_P3) sts_offset += (ci->sts_count+1) * sizeof(u32); cp_offset = sts_offset + (ci->sts_count+1) * sizeof(struct status_msg); hba->dma_size = cp_offset + sizeof(struct st_frame); if (hba->cardtype == st_seq || (hba->cardtype == st_vsc && (pdev->subsystem_device & 1))) { hba->extra_offset = hba->dma_size; hba->dma_size += ST_ADDITIONAL_MEM; } hba->dma_mem = dma_alloc_coherent(&pdev->dev, hba->dma_size, &hba->dma_handle, GFP_KERNEL); if (!hba->dma_mem) { /* Retry minimum coherent mapping for st_seq and st_vsc */ if (hba->cardtype == st_seq || (hba->cardtype == st_vsc && (pdev->subsystem_device & 1))) { printk(KERN_WARNING DRV_NAME "(%s): allocating min buffer for controller\n", pci_name(pdev)); hba->dma_size = hba->extra_offset + ST_ADDITIONAL_MEM_MIN; hba->dma_mem = dma_alloc_coherent(&pdev->dev, hba->dma_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->ccb = kcalloc(ci->rq_count, sizeof(struct st_ccb), GFP_KERNEL); if (!hba->ccb) { err = -ENOMEM; printk(KERN_ERR DRV_NAME "(%s): ccb alloc failed\n", pci_name(pdev)); goto out_pci_free; } if (hba->cardtype == st_yel || hba->cardtype == st_P3) hba->scratch = (__le32 *)(hba->dma_mem + scratch_offset); hba->status_buffer = (struct status_msg *)(hba->dma_mem + sts_offset); hba->copy_buffer = hba->dma_mem + cp_offset; hba->rq_count = ci->rq_count; hba->rq_size = ci->rq_size; hba->sts_count = ci->sts_count; hba->alloc_rq = ci->alloc_rq; hba->map_sg = ci->map_sg; hba->send = ci->send; hba->mu_status = MU_STATE_STARTING; hba->msi_lock = 0; if (hba->cardtype == st_yel || hba->cardtype == st_P3) host->sg_tablesize = 38; else host->sg_tablesize = 32; host->can_queue = ci->rq_count; host->cmd_per_lun = ci->rq_count; host->max_id = ci->max_id; host->max_lun = ci->max_lun; host->max_channel = ci->max_channel; host->unique_id = host->host_no; host->max_cmd_len = STEX_CDB_LENGTH; hba->host = host; hba->pdev = pdev; init_waitqueue_head(&hba->reset_waitq); snprintf(hba->work_q_name, sizeof(hba->work_q_name), "stex_wq_%d", host->host_no); hba->work_q = create_singlethread_workqueue(hba->work_q_name); if (!hba->work_q) { printk(KERN_ERR DRV_NAME "(%s): create workqueue failed\n", pci_name(pdev)); err = -ENOMEM; goto out_ccb_free; } INIT_WORK(&hba->reset_work, stex_reset_work); err = stex_request_irq(hba); if (err) { printk(KERN_ERR DRV_NAME "(%s): request irq failed\n", pci_name(pdev)); goto out_free_wq; } 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: stex_free_irq(hba); out_free_wq: destroy_workqueue(hba->work_q); out_ccb_free: kfree(hba->ccb); out_pci_free: dma_free_coherent(&pdev->dev, hba->dma_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, int st_sleep_mic) { struct req_msg *req; struct st_msg_header *msg_h; unsigned long flags; unsigned long before; u16 tag = 0; spin_lock_irqsave(hba->host->host_lock, flags); if ((hba->cardtype == st_yel || hba->cardtype == st_P3) && hba->supports_pm == 1) { if (st_sleep_mic == ST_NOTHANDLED) { spin_unlock_irqrestore(hba->host->host_lock, flags); return; } } req = hba->alloc_rq(hba); if (hba->cardtype == st_yel || hba->cardtype == st_P3) { msg_h = (struct st_msg_header *)req - 1; memset(msg_h, 0, hba->rq_size); } else memset(req, 0, hba->rq_size); if ((hba->cardtype == st_yosemite || hba->cardtype == st_yel || hba->cardtype == st_P3) && st_sleep_mic == ST_IGNORED) { req->cdb[0] = MGT_CMD; req->cdb[1] = MGT_CMD_SIGNATURE; req->cdb[2] = CTLR_CONFIG_CMD; req->cdb[3] = CTLR_SHUTDOWN; } else if ((hba->cardtype == st_yel || hba->cardtype == st_P3) && st_sleep_mic != ST_IGNORED) { req->cdb[0] = MGT_CMD; req->cdb[1] = MGT_CMD_SIGNATURE; req->cdb[2] = CTLR_CONFIG_CMD; req->cdb[3] = PMIC_SHUTDOWN; req->cdb[4] = st_sleep_mic; } else { 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; hba->send(hba, req, tag); spin_unlock_irqrestore(hba->host->host_lock, flags); before = jiffies; while (hba->ccb[tag].req_type & PASSTHRU_REQ_TYPE) { if (time_after(jiffies, before + ST_INTERNAL_TIMEOUT * HZ)) { hba->ccb[tag].req_type = 0; hba->mu_status = MU_STATE_STOP; return; } msleep(1); } hba->mu_status = MU_STATE_STOP; } static void stex_hba_free(struct st_hba *hba) { stex_free_irq(hba); destroy_workqueue(hba->work_q); iounmap(hba->mmio_base); pci_release_regions(hba->pdev); kfree(hba->ccb); dma_free_coherent(&hba->pdev->dev, hba->dma_size, hba->dma_mem, hba->dma_handle); } static void stex_remove(struct pci_dev *pdev) { struct st_hba *hba = pci_get_drvdata(pdev); hba->mu_status = MU_STATE_NOCONNECT; return_abnormal_state(hba, DID_NO_CONNECT); scsi_remove_host(hba->host); scsi_block_requests(hba->host); stex_hba_free(hba); scsi_host_put(hba->host); pci_disable_device(pdev); unregister_reboot_notifier(&stex_notifier); } static void stex_shutdown(struct pci_dev *pdev) { struct st_hba *hba = pci_get_drvdata(pdev); if (hba->supports_pm == 0) { stex_hba_stop(hba, ST_IGNORED); } else if (hba->supports_pm == 1 && S6flag) { unregister_reboot_notifier(&stex_notifier); stex_hba_stop(hba, ST_S6); } else stex_hba_stop(hba, ST_S5); } static int stex_choice_sleep_mic(struct st_hba *hba, pm_message_t state) { switch (state.event) { case PM_EVENT_SUSPEND: return ST_S3; case PM_EVENT_HIBERNATE: hba->msi_lock = 0; return ST_S4; default: return ST_NOTHANDLED; } } static int stex_suspend(struct pci_dev *pdev, pm_message_t state) { struct st_hba *hba = pci_get_drvdata(pdev); if ((hba->cardtype == st_yel || hba->cardtype == st_P3) && hba->supports_pm == 1) stex_hba_stop(hba, stex_choice_sleep_mic(hba, state)); else stex_hba_stop(hba, ST_IGNORED); return 0; } static int stex_resume(struct pci_dev *pdev) { struct st_hba *hba = pci_get_drvdata(pdev); hba->mu_status = MU_STATE_STARTING; stex_handshake(hba); return 0; } static int stex_halt(struct notifier_block *nb, unsigned long event, void *buf) { S6flag = 1; return NOTIFY_OK; } 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 = stex_remove, .shutdown = stex_shutdown, .suspend = stex_suspend, .resume = stex_resume, }; 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);
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