diff options
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/stex.c | 201 |
1 files changed, 125 insertions, 76 deletions
diff --git a/drivers/scsi/stex.c b/drivers/scsi/stex.c index c4eb5c1cc1b..75f5079e569 100644 --- a/drivers/scsi/stex.c +++ b/drivers/scsi/stex.c @@ -95,19 +95,8 @@ enum { TASK_ATTRIBUTE_ORDERED = 0x2, TASK_ATTRIBUTE_ACA = 0x4, - /* request count, etc. */ - MU_MAX_REQUEST = 32, - - /* 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 = 16, - 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 */ @@ -120,9 +109,8 @@ enum { st_shasta = 0, st_vsc = 1, - st_vsc1 = 2, - st_yosemite = 3, - st_seq = 4, + st_yosemite = 2, + st_seq = 3, PASSTHRU_REQ_TYPE = 0x00000001, PASSTHRU_REQ_NO_WAKEUP = 0x00000100, @@ -196,7 +184,7 @@ struct req_msg { u8 data_dir; u8 payload_sz; /* payload size in 4-byte, not used */ u8 cdb[STEX_CDB_LENGTH]; - u8 variable[REQ_VARIABLE_LEN]; + u32 variable[0]; }; struct status_msg { @@ -252,12 +240,6 @@ struct st_drvver { 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_EXTRA_SIZE sizeof(struct st_frame) -#define STEX_BUFFER_SIZE (MU_BUFFER_SIZE + STEX_EXTRA_SIZE) - struct st_ccb { struct req_msg *req; struct scsi_cmnd *cmd; @@ -288,13 +270,26 @@ struct st_hba { struct status_msg *status_buffer; void *copy_buffer; /* temp buffer for driver-handled commands */ - struct st_ccb ccb[MU_MAX_REQUEST]; + struct st_ccb *ccb; struct st_ccb *wait_ccb; 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; +}; + +struct st_card_info { + unsigned int max_id; + unsigned int max_lun; + unsigned int max_channel; + u16 rq_count; + u16 rq_size; + u16 sts_count; }; static int msi; @@ -331,7 +326,7 @@ 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; + hba->status_tail %= hba->sts_count+1; return status; } @@ -349,11 +344,10 @@ static void stex_invalid_field(struct scsi_cmnd *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; + struct req_msg *req = hba->dma_mem + hba->req_head * hba->rq_size; ++hba->req_head; - hba->req_head %= MU_REQ_COUNT; + hba->req_head %= hba->rq_count+1; return req; } @@ -653,7 +647,7 @@ static void stex_mu_intr(struct st_hba *hba, u32 doorbell) /* status payloads */ hba->status_head = readl(base + OMR1); - if (unlikely(hba->status_head >= MU_STATUS_COUNT)) { + if (unlikely(hba->status_head > hba->sts_count)) { printk(KERN_WARNING DRV_NAME "(%s): invalid status head\n", pci_name(hba->pdev)); return; @@ -789,19 +783,19 @@ static int stex_handshake(struct st_hba *hba) h = (struct handshake_frame *)hba->status_buffer; h->rb_phy = cpu_to_le64(hba->dma_handle); - h->req_sz = cpu_to_le16(sizeof(struct req_msg)); - h->req_cnt = cpu_to_le16(MU_REQ_COUNT); + 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(MU_STATUS_COUNT); + h->status_cnt = cpu_to_le16(hba->sts_count+1); stex_gettime(&h->hosttime); h->partner_type = HMU_PARTNER_TYPE; - if (hba->dma_size > STEX_BUFFER_SIZE) { - h->extra_offset = cpu_to_le32(STEX_BUFFER_SIZE); + if (hba->extra_offset) { + h->extra_offset = cpu_to_le32(hba->extra_offset); h->extra_size = cpu_to_le32(ST_ADDITIONAL_MEM); } else h->extra_offset = h->extra_size = 0; - status_phys = hba->dma_handle + MU_REQ_BUFFER_SIZE; + 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); @@ -1026,10 +1020,72 @@ static struct scsi_host_template driver_template = { .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 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, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_yosemite }, + + /* st_seq */ + { 0x105a, 0x3360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_seq }, + { } /* 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, + }, + + /* st_vsc */ + { + .max_id = 129, + .max_lun = 1, + .max_channel = 0, + .rq_count = 32, + .rq_size = 1048, + .sts_count = 32, + }, + + /* st_yosemite */ + { + .max_id = 2, + .max_lun = 256, + .max_channel = 0, + .rq_count = 256, + .rq_size = 1048, + .sts_count = 256, + }, + + /* st_seq */ + { + .max_id = 129, + .max_lun = 1, + .max_channel = 0, + .rq_count = 32, + .rq_size = 1048, + .sts_count = 32, + }, }; static int stex_set_dma_mask(struct pci_dev * pdev) @@ -1084,6 +1140,8 @@ 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; int err; err = pci_enable_device(pdev); @@ -1127,10 +1185,15 @@ stex_probe(struct pci_dev *pdev, const struct pci_device_id *id) } hba->cardtype = (unsigned int) id->driver_data; - if (hba->cardtype == st_vsc && (pdev->subsystem_device & 1)) - hba->cardtype = st_vsc1; - hba->dma_size = (hba->cardtype == st_vsc1 || hba->cardtype == st_seq) ? - (STEX_BUFFER_SIZE + ST_ADDITIONAL_MEM) : (STEX_BUFFER_SIZE); + ci = &stex_card_info[hba->cardtype]; + sts_offset = (ci->rq_count+1) * ci->rq_size; + 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) { @@ -1140,23 +1203,26 @@ stex_probe(struct pci_dev *pdev, const struct pci_device_id *id) 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->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; + } + + 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->mu_status = MU_STATE_STARTING; - if (hba->cardtype == st_shasta) { - host->max_lun = 8; - host->max_id = 16 + 1; - } else if (hba->cardtype == st_yosemite) { - host->max_lun = 256; - host->max_id = 1 + 1; - } else { - /* st_vsc , st_vsc1 and st_seq */ - host->max_lun = 1; - host->max_id = 128 + 1; - } - host->max_channel = 0; + 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; @@ -1167,7 +1233,7 @@ stex_probe(struct pci_dev *pdev, const struct pci_device_id *id) if (err) { printk(KERN_ERR DRV_NAME "(%s): request irq failed\n", pci_name(pdev)); - goto out_pci_free; + goto out_ccb_free; } err = stex_handshake(hba); @@ -1196,6 +1262,8 @@ stex_probe(struct pci_dev *pdev, const struct pci_device_id *id) out_free_irq: stex_free_irq(hba); +out_ccb_free: + kfree(hba->ccb); out_pci_free: dma_free_coherent(&pdev->dev, hba->dma_size, hba->dma_mem, hba->dma_handle); @@ -1260,6 +1328,8 @@ static void stex_hba_free(struct st_hba *hba) pci_release_regions(hba->pdev); + kfree(hba->ccb); + dma_free_coherent(&hba->pdev->dev, hba->dma_size, hba->dma_mem, hba->dma_handle); } @@ -1288,27 +1358,6 @@ static void stex_shutdown(struct pci_dev *pdev) stex_hba_stop(hba); } -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, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_yosemite }, - - /* st_seq */ - { 0x105a, 0x3360, PCI_ANY_ID, PCI_ANY_ID, 0, 0, st_seq }, - { } /* terminate list */ -}; MODULE_DEVICE_TABLE(pci, stex_pci_tbl); static struct pci_driver stex_pci_driver = { |