diff options
Diffstat (limited to 'drivers/block/cciss_scsi.c')
| -rw-r--r-- | drivers/block/cciss_scsi.c | 591 |
1 files changed, 288 insertions, 303 deletions
diff --git a/drivers/block/cciss_scsi.c b/drivers/block/cciss_scsi.c index 3604b72f2af..9133ad4c7b1 100644 --- a/drivers/block/cciss_scsi.c +++ b/drivers/block/cciss_scsi.c @@ -44,7 +44,7 @@ #define CCISS_ABORT_MSG 0x00 #define CCISS_RESET_MSG 0x01 -static int fill_cmd(CommandList_struct *c, __u8 cmd, int ctlr, void *buff, +static int fill_cmd(ctlr_info_t *h, CommandList_struct *c, __u8 cmd, void *buff, size_t size, __u8 page_code, unsigned char *scsi3addr, int cmd_type); @@ -127,16 +127,16 @@ struct cciss_scsi_adapter_data_t { spinlock_t lock; // to protect ccissscsi[ctlr]; }; -#define CPQ_TAPE_LOCK(ctlr, flags) spin_lock_irqsave( \ - &hba[ctlr]->scsi_ctlr->lock, flags); -#define CPQ_TAPE_UNLOCK(ctlr, flags) spin_unlock_irqrestore( \ - &hba[ctlr]->scsi_ctlr->lock, flags); +#define CPQ_TAPE_LOCK(h, flags) spin_lock_irqsave( \ + &h->scsi_ctlr->lock, flags); +#define CPQ_TAPE_UNLOCK(h, flags) spin_unlock_irqrestore( \ + &h->scsi_ctlr->lock, flags); static CommandList_struct * scsi_cmd_alloc(ctlr_info_t *h) { /* assume only one process in here at a time, locking done by caller. */ - /* use CCISS_LOCK(ctlr) */ + /* use h->lock */ /* might be better to rewrite how we allocate scsi commands in a way that */ /* needs no locking at all. */ @@ -177,10 +177,10 @@ scsi_cmd_alloc(ctlr_info_t *h) } static void -scsi_cmd_free(ctlr_info_t *h, CommandList_struct *cmd) +scsi_cmd_free(ctlr_info_t *h, CommandList_struct *c) { /* assume only one process in here at a time, locking done by caller. */ - /* use CCISS_LOCK(ctlr) */ + /* use h->lock */ /* drop the free memory chunk on top of the stack. */ struct cciss_scsi_adapter_data_t *sa; @@ -193,19 +193,19 @@ scsi_cmd_free(ctlr_info_t *h, CommandList_struct *cmd) printk("cciss: scsi_cmd_free called too many times.\n"); BUG(); } - stk->elem[stk->top] = (struct cciss_scsi_cmd_stack_elem_t *) cmd; + stk->elem[stk->top] = (struct cciss_scsi_cmd_stack_elem_t *) c; } static int -scsi_cmd_stack_setup(int ctlr, struct cciss_scsi_adapter_data_t *sa) +scsi_cmd_stack_setup(ctlr_info_t *h, struct cciss_scsi_adapter_data_t *sa) { int i; struct cciss_scsi_cmd_stack_t *stk; size_t size; - sa->cmd_sg_list = cciss_allocate_sg_chain_blocks(hba[ctlr], - hba[ctlr]->chainsize, CMD_STACK_SIZE); - if (!sa->cmd_sg_list && hba[ctlr]->chainsize > 0) + sa->cmd_sg_list = cciss_allocate_sg_chain_blocks(h, + h->chainsize, CMD_STACK_SIZE); + if (!sa->cmd_sg_list && h->chainsize > 0) return -ENOMEM; stk = &sa->cmd_stack; @@ -215,7 +215,7 @@ scsi_cmd_stack_setup(int ctlr, struct cciss_scsi_adapter_data_t *sa) BUILD_BUG_ON((sizeof(*stk->pool) % COMMANDLIST_ALIGNMENT) != 0); /* pci_alloc_consistent guarantees 32-bit DMA address will be used */ stk->pool = (struct cciss_scsi_cmd_stack_elem_t *) - pci_alloc_consistent(hba[ctlr]->pdev, size, &stk->cmd_pool_handle); + pci_alloc_consistent(h->pdev, size, &stk->cmd_pool_handle); if (stk->pool == NULL) { cciss_free_sg_chain_blocks(sa->cmd_sg_list, CMD_STACK_SIZE); @@ -234,13 +234,13 @@ scsi_cmd_stack_setup(int ctlr, struct cciss_scsi_adapter_data_t *sa) } static void -scsi_cmd_stack_free(int ctlr) +scsi_cmd_stack_free(ctlr_info_t *h) { struct cciss_scsi_adapter_data_t *sa; struct cciss_scsi_cmd_stack_t *stk; size_t size; - sa = hba[ctlr]->scsi_ctlr; + sa = h->scsi_ctlr; stk = &sa->cmd_stack; if (stk->top != CMD_STACK_SIZE-1) { printk( "cciss: %d scsi commands are still outstanding.\n", @@ -250,7 +250,7 @@ scsi_cmd_stack_free(int ctlr) } size = sizeof(struct cciss_scsi_cmd_stack_elem_t) * CMD_STACK_SIZE; - pci_free_consistent(hba[ctlr]->pdev, size, stk->pool, stk->cmd_pool_handle); + pci_free_consistent(h->pdev, size, stk->pool, stk->cmd_pool_handle); stk->pool = NULL; cciss_free_sg_chain_blocks(sa->cmd_sg_list, CMD_STACK_SIZE); } @@ -342,20 +342,20 @@ print_cmd(CommandList_struct *cp) #endif static int -find_bus_target_lun(int ctlr, int *bus, int *target, int *lun) +find_bus_target_lun(ctlr_info_t *h, int *bus, int *target, int *lun) { /* finds an unused bus, target, lun for a new device */ - /* assumes hba[ctlr]->scsi_ctlr->lock is held */ + /* assumes h->scsi_ctlr->lock is held */ int i, found=0; unsigned char target_taken[CCISS_MAX_SCSI_DEVS_PER_HBA]; memset(&target_taken[0], 0, CCISS_MAX_SCSI_DEVS_PER_HBA); target_taken[SELF_SCSI_ID] = 1; - for (i=0;i<ccissscsi[ctlr].ndevices;i++) - target_taken[ccissscsi[ctlr].dev[i].target] = 1; + for (i = 0; i < ccissscsi[h->ctlr].ndevices; i++) + target_taken[ccissscsi[h->ctlr].dev[i].target] = 1; - for (i=0;i<CCISS_MAX_SCSI_DEVS_PER_HBA;i++) { + for (i = 0; i < CCISS_MAX_SCSI_DEVS_PER_HBA; i++) { if (!target_taken[i]) { *bus = 0; *target=i; *lun = 0; found=1; break; @@ -369,19 +369,19 @@ struct scsi2map { }; static int -cciss_scsi_add_entry(int ctlr, int hostno, +cciss_scsi_add_entry(ctlr_info_t *h, int hostno, struct cciss_scsi_dev_t *device, struct scsi2map *added, int *nadded) { - /* assumes hba[ctlr]->scsi_ctlr->lock is held */ - int n = ccissscsi[ctlr].ndevices; + /* assumes h->scsi_ctlr->lock is held */ + int n = ccissscsi[h->ctlr].ndevices; struct cciss_scsi_dev_t *sd; int i, bus, target, lun; unsigned char addr1[8], addr2[8]; if (n >= CCISS_MAX_SCSI_DEVS_PER_HBA) { printk("cciss%d: Too many devices, " - "some will be inaccessible.\n", ctlr); + "some will be inaccessible.\n", h->ctlr); return -1; } @@ -397,7 +397,7 @@ cciss_scsi_add_entry(int ctlr, int hostno, memcpy(addr1, device->scsi3addr, 8); addr1[4] = 0; for (i = 0; i < n; i++) { - sd = &ccissscsi[ctlr].dev[i]; + sd = &ccissscsi[h->ctlr].dev[i]; memcpy(addr2, sd->scsi3addr, 8); addr2[4] = 0; /* differ only in byte 4? */ @@ -410,9 +410,9 @@ cciss_scsi_add_entry(int ctlr, int hostno, } } - sd = &ccissscsi[ctlr].dev[n]; + sd = &ccissscsi[h->ctlr].dev[n]; if (lun == 0) { - if (find_bus_target_lun(ctlr, + if (find_bus_target_lun(h, &sd->bus, &sd->target, &sd->lun) != 0) return -1; } else { @@ -431,37 +431,37 @@ cciss_scsi_add_entry(int ctlr, int hostno, memcpy(sd->device_id, device->device_id, sizeof(sd->device_id)); sd->devtype = device->devtype; - ccissscsi[ctlr].ndevices++; + ccissscsi[h->ctlr].ndevices++; /* initially, (before registering with scsi layer) we don't know our hostno and we don't want to print anything first time anyway (the scsi layer's inquiries will show that info) */ if (hostno != -1) printk("cciss%d: %s device c%db%dt%dl%d added.\n", - ctlr, scsi_device_type(sd->devtype), hostno, + h->ctlr, scsi_device_type(sd->devtype), hostno, sd->bus, sd->target, sd->lun); return 0; } static void -cciss_scsi_remove_entry(int ctlr, int hostno, int entry, +cciss_scsi_remove_entry(ctlr_info_t *h, int hostno, int entry, struct scsi2map *removed, int *nremoved) { - /* assumes hba[ctlr]->scsi_ctlr->lock is held */ + /* assumes h->ctlr]->scsi_ctlr->lock is held */ int i; struct cciss_scsi_dev_t sd; if (entry < 0 || entry >= CCISS_MAX_SCSI_DEVS_PER_HBA) return; - sd = ccissscsi[ctlr].dev[entry]; + sd = ccissscsi[h->ctlr].dev[entry]; removed[*nremoved].bus = sd.bus; removed[*nremoved].target = sd.target; removed[*nremoved].lun = sd.lun; (*nremoved)++; - for (i=entry;i<ccissscsi[ctlr].ndevices-1;i++) - ccissscsi[ctlr].dev[i] = ccissscsi[ctlr].dev[i+1]; - ccissscsi[ctlr].ndevices--; + for (i = entry; i < ccissscsi[h->ctlr].ndevices-1; i++) + ccissscsi[h->ctlr].dev[i] = ccissscsi[h->ctlr].dev[i+1]; + ccissscsi[h->ctlr].ndevices--; printk("cciss%d: %s device c%db%dt%dl%d removed.\n", - ctlr, scsi_device_type(sd.devtype), hostno, + h->ctlr, scsi_device_type(sd.devtype), hostno, sd.bus, sd.target, sd.lun); } @@ -476,24 +476,24 @@ cciss_scsi_remove_entry(int ctlr, int hostno, int entry, (a)[1] == (b)[1] && \ (a)[0] == (b)[0]) -static void fixup_botched_add(int ctlr, char *scsi3addr) +static void fixup_botched_add(ctlr_info_t *h, char *scsi3addr) { /* called when scsi_add_device fails in order to re-adjust */ /* ccissscsi[] to match the mid layer's view. */ unsigned long flags; int i, j; - CPQ_TAPE_LOCK(ctlr, flags); - for (i = 0; i < ccissscsi[ctlr].ndevices; i++) { + CPQ_TAPE_LOCK(h, flags); + for (i = 0; i < ccissscsi[h->ctlr].ndevices; i++) { if (memcmp(scsi3addr, - ccissscsi[ctlr].dev[i].scsi3addr, 8) == 0) { - for (j = i; j < ccissscsi[ctlr].ndevices-1; j++) - ccissscsi[ctlr].dev[j] = - ccissscsi[ctlr].dev[j+1]; - ccissscsi[ctlr].ndevices--; + ccissscsi[h->ctlr].dev[i].scsi3addr, 8) == 0) { + for (j = i; j < ccissscsi[h->ctlr].ndevices-1; j++) + ccissscsi[h->ctlr].dev[j] = + ccissscsi[h->ctlr].dev[j+1]; + ccissscsi[h->ctlr].ndevices--; break; } } - CPQ_TAPE_UNLOCK(ctlr, flags); + CPQ_TAPE_UNLOCK(h, flags); } static int device_is_the_same(struct cciss_scsi_dev_t *dev1, @@ -513,7 +513,7 @@ static int device_is_the_same(struct cciss_scsi_dev_t *dev1, } static int -adjust_cciss_scsi_table(int ctlr, int hostno, +adjust_cciss_scsi_table(ctlr_info_t *h, int hostno, struct cciss_scsi_dev_t sd[], int nsds) { /* sd contains scsi3 addresses and devtypes, but @@ -535,14 +535,14 @@ adjust_cciss_scsi_table(int ctlr, int hostno, if (!added || !removed) { printk(KERN_WARNING "cciss%d: Out of memory in " - "adjust_cciss_scsi_table\n", ctlr); + "adjust_cciss_scsi_table\n", h->ctlr); goto free_and_out; } - CPQ_TAPE_LOCK(ctlr, flags); + CPQ_TAPE_LOCK(h, flags); if (hostno != -1) /* if it's not the first time... */ - sh = hba[ctlr]->scsi_ctlr->scsi_host; + sh = h->scsi_ctlr->scsi_host; /* find any devices in ccissscsi[] that are not in sd[] and remove them from ccissscsi[] */ @@ -550,8 +550,8 @@ adjust_cciss_scsi_table(int ctlr, int hostno, i = 0; nremoved = 0; nadded = 0; - while(i<ccissscsi[ctlr].ndevices) { - csd = &ccissscsi[ctlr].dev[i]; + while (i < ccissscsi[h->ctlr].ndevices) { + csd = &ccissscsi[h->ctlr].dev[i]; found=0; for (j=0;j<nsds;j++) { if (SCSI3ADDR_EQ(sd[j].scsi3addr, @@ -567,19 +567,20 @@ adjust_cciss_scsi_table(int ctlr, int hostno, if (found == 0) { /* device no longer present. */ changes++; /* printk("cciss%d: %s device c%db%dt%dl%d removed.\n", - ctlr, scsi_device_type(csd->devtype), hostno, + h->ctlr, scsi_device_type(csd->devtype), hostno, csd->bus, csd->target, csd->lun); */ - cciss_scsi_remove_entry(ctlr, hostno, i, + cciss_scsi_remove_entry(h, hostno, i, removed, &nremoved); /* remove ^^^, hence i not incremented */ } else if (found == 1) { /* device is different in some way */ changes++; printk("cciss%d: device c%db%dt%dl%d has changed.\n", - ctlr, hostno, csd->bus, csd->target, csd->lun); - cciss_scsi_remove_entry(ctlr, hostno, i, + h->ctlr, hostno, + csd->bus, csd->target, csd->lun); + cciss_scsi_remove_entry(h, hostno, i, removed, &nremoved); /* remove ^^^, hence i not incremented */ - if (cciss_scsi_add_entry(ctlr, hostno, &sd[j], + if (cciss_scsi_add_entry(h, hostno, &sd[j], added, &nadded) != 0) /* we just removed one, so add can't fail. */ BUG(); @@ -601,8 +602,8 @@ adjust_cciss_scsi_table(int ctlr, int hostno, for (i=0;i<nsds;i++) { found=0; - for (j=0;j<ccissscsi[ctlr].ndevices;j++) { - csd = &ccissscsi[ctlr].dev[j]; + for (j = 0; j < ccissscsi[h->ctlr].ndevices; j++) { + csd = &ccissscsi[h->ctlr].dev[j]; if (SCSI3ADDR_EQ(sd[i].scsi3addr, csd->scsi3addr)) { if (device_is_the_same(&sd[i], csd)) @@ -614,18 +615,18 @@ adjust_cciss_scsi_table(int ctlr, int hostno, } if (!found) { changes++; - if (cciss_scsi_add_entry(ctlr, hostno, &sd[i], + if (cciss_scsi_add_entry(h, hostno, &sd[i], added, &nadded) != 0) break; } else if (found == 1) { /* should never happen... */ changes++; printk(KERN_WARNING "cciss%d: device " - "unexpectedly changed\n", ctlr); + "unexpectedly changed\n", h->ctlr); /* but if it does happen, we just ignore that device */ } } - CPQ_TAPE_UNLOCK(ctlr, flags); + CPQ_TAPE_UNLOCK(h, flags); /* Don't notify scsi mid layer of any changes the first time through */ /* (or if there are no changes) scsi_scan_host will do it later the */ @@ -647,7 +648,7 @@ adjust_cciss_scsi_table(int ctlr, int hostno, /* timeout as if the device was gone. */ printk(KERN_WARNING "cciss%d: didn't find " "c%db%dt%dl%d\n for removal.", - ctlr, hostno, removed[i].bus, + h->ctlr, hostno, removed[i].bus, removed[i].target, removed[i].lun); } } @@ -661,11 +662,11 @@ adjust_cciss_scsi_table(int ctlr, int hostno, continue; printk(KERN_WARNING "cciss%d: scsi_add_device " "c%db%dt%dl%d failed, device not added.\n", - ctlr, hostno, + h->ctlr, hostno, added[i].bus, added[i].target, added[i].lun); /* now we have to remove it from ccissscsi, */ /* since it didn't get added to scsi mid layer */ - fixup_botched_add(ctlr, added[i].scsi3addr); + fixup_botched_add(h, added[i].scsi3addr); } free_and_out: @@ -675,33 +676,33 @@ free_and_out: } static int -lookup_scsi3addr(int ctlr, int bus, int target, int lun, char *scsi3addr) +lookup_scsi3addr(ctlr_info_t *h, int bus, int target, int lun, char *scsi3addr) { int i; struct cciss_scsi_dev_t *sd; unsigned long flags; - CPQ_TAPE_LOCK(ctlr, flags); - for (i=0;i<ccissscsi[ctlr].ndevices;i++) { - sd = &ccissscsi[ctlr].dev[i]; + CPQ_TAPE_LOCK(h, flags); + for (i = 0; i < ccissscsi[h->ctlr].ndevices; i++) { + sd = &ccissscsi[h->ctlr].dev[i]; if (sd->bus == bus && sd->target == target && sd->lun == lun) { memcpy(scsi3addr, &sd->scsi3addr[0], 8); - CPQ_TAPE_UNLOCK(ctlr, flags); + CPQ_TAPE_UNLOCK(h, flags); return 0; } } - CPQ_TAPE_UNLOCK(ctlr, flags); + CPQ_TAPE_UNLOCK(h, flags); return -1; } static void -cciss_scsi_setup(int cntl_num) +cciss_scsi_setup(ctlr_info_t *h) { struct cciss_scsi_adapter_data_t * shba; - ccissscsi[cntl_num].ndevices = 0; + ccissscsi[h->ctlr].ndevices = 0; shba = (struct cciss_scsi_adapter_data_t *) kmalloc(sizeof(*shba), GFP_KERNEL); if (shba == NULL) @@ -709,35 +710,35 @@ cciss_scsi_setup(int cntl_num) shba->scsi_host = NULL; spin_lock_init(&shba->lock); shba->registered = 0; - if (scsi_cmd_stack_setup(cntl_num, shba) != 0) { + if (scsi_cmd_stack_setup(h, shba) != 0) { kfree(shba); shba = NULL; } - hba[cntl_num]->scsi_ctlr = shba; + h->scsi_ctlr = shba; return; } -static void -complete_scsi_command( CommandList_struct *cp, int timeout, __u32 tag) +static void complete_scsi_command(CommandList_struct *c, int timeout, + __u32 tag) { struct scsi_cmnd *cmd; - ctlr_info_t *ctlr; + ctlr_info_t *h; ErrorInfo_struct *ei; - ei = cp->err_info; + ei = c->err_info; /* First, see if it was a message rather than a command */ - if (cp->Request.Type.Type == TYPE_MSG) { - cp->cmd_type = CMD_MSG_DONE; + if (c->Request.Type.Type == TYPE_MSG) { + c->cmd_type = CMD_MSG_DONE; return; } - cmd = (struct scsi_cmnd *) cp->scsi_cmd; - ctlr = hba[cp->ctlr]; + cmd = (struct scsi_cmnd *) c->scsi_cmd; + h = hba[c->ctlr]; scsi_dma_unmap(cmd); - if (cp->Header.SGTotal > ctlr->max_cmd_sgentries) - cciss_unmap_sg_chain_block(ctlr, cp); + if (c->Header.SGTotal > h->max_cmd_sgentries) + cciss_unmap_sg_chain_block(h, c); cmd->result = (DID_OK << 16); /* host byte */ cmd->result |= (COMMAND_COMPLETE << 8); /* msg byte */ @@ -764,9 +765,8 @@ complete_scsi_command( CommandList_struct *cp, int timeout, __u32 tag) { #if 0 printk(KERN_WARNING "cciss: cmd %p " - "has SCSI Status = %x\n", - cp, - ei->ScsiStatus); + "has SCSI Status = %x\n", + c, ei->ScsiStatus); #endif cmd->result |= (ei->ScsiStatus << 1); } @@ -786,13 +786,13 @@ complete_scsi_command( CommandList_struct *cp, int timeout, __u32 tag) case CMD_DATA_UNDERRUN: /* let mid layer handle it. */ break; case CMD_DATA_OVERRUN: - printk(KERN_WARNING "cciss: cp %p has" + printk(KERN_WARNING "cciss: %p has" " completed with data overrun " - "reported\n", cp); + "reported\n", c); break; case CMD_INVALID: { - /* print_bytes(cp, sizeof(*cp), 1, 0); - print_cmd(cp); */ + /* print_bytes(c, sizeof(*c), 1, 0); + print_cmd(c); */ /* We get CMD_INVALID if you address a non-existent tape drive instead of a selection timeout (no response). You will see this if you yank out a tape drive, then try to access it. This is kind of a shame @@ -802,54 +802,52 @@ complete_scsi_command( CommandList_struct *cp, int timeout, __u32 tag) } break; case CMD_PROTOCOL_ERR: - printk(KERN_WARNING "cciss: cp %p has " - "protocol error \n", cp); + printk(KERN_WARNING "cciss: %p has " + "protocol error\n", c); break; case CMD_HARDWARE_ERR: cmd->result = DID_ERROR << 16; - printk(KERN_WARNING "cciss: cp %p had " - " hardware error\n", cp); + printk(KERN_WARNING "cciss: %p had " + " hardware error\n", c); break; case CMD_CONNECTION_LOST: cmd->result = DID_ERROR << 16; - printk(KERN_WARNING "cciss: cp %p had " - "connection lost\n", cp); + printk(KERN_WARNING "cciss: %p had " + "connection lost\n", c); break; case CMD_ABORTED: cmd->result = DID_ABORT << 16; - printk(KERN_WARNING "cciss: cp %p was " - "aborted\n", cp); + printk(KERN_WARNING "cciss: %p was " + "aborted\n", c); break; case CMD_ABORT_FAILED: cmd->result = DID_ERROR << 16; - printk(KERN_WARNING "cciss: cp %p reports " - "abort failed\n", cp); + printk(KERN_WARNING "cciss: %p reports " + "abort failed\n", c); break; case CMD_UNSOLICITED_ABORT: cmd->result = DID_ABORT << 16; - printk(KERN_WARNING "cciss: cp %p aborted " - "do to an unsolicited abort\n", cp); + printk(KERN_WARNING "cciss: %p aborted " + "do to an unsolicited abort\n", c); break; case CMD_TIMEOUT: cmd->result = DID_TIME_OUT << 16; - printk(KERN_WARNING "cciss: cp %p timedout\n", - cp); + printk(KERN_WARNING "cciss: %p timedout\n", + c); break; default: cmd->result = DID_ERROR << 16; - printk(KERN_WARNING "cciss: cp %p returned " - "unknown status %x\n", cp, + printk(KERN_WARNING "cciss: %p returned " + "unknown status %x\n", c, ei->CommandStatus); } } - // printk("c:%p:c%db%dt%dl%d ", cmd, ctlr->ctlr, cmd->channel, - // cmd->target, cmd->lun); cmd->scsi_done(cmd); - scsi_cmd_free(ctlr, cp); + scsi_cmd_free(h, c); } static int -cciss_scsi_detect(int ctlr) +cciss_scsi_detect(ctlr_info_t *h) { struct Scsi_Host *sh; int error; @@ -860,15 +858,15 @@ cciss_scsi_detect(int ctlr) sh->io_port = 0; // good enough? FIXME, sh->n_io_port = 0; // I don't think we use these two... sh->this_id = SELF_SCSI_ID; - sh->sg_tablesize = hba[ctlr]->maxsgentries; + sh->sg_tablesize = h->maxsgentries; sh->max_cmd_len = MAX_COMMAND_SIZE; ((struct cciss_scsi_adapter_data_t *) - hba[ctlr]->scsi_ctlr)->scsi_host = sh; - sh->hostdata[0] = (unsigned long) hba[ctlr]; - sh->irq = hba[ctlr]->intr[SIMPLE_MODE_INT]; + h->scsi_ctlr)->scsi_host = sh; + sh->hostdata[0] = (unsigned long) h; + sh->irq = h->intr[SIMPLE_MODE_INT]; sh->unique_id = sh->irq; - error = scsi_add_host(sh, &hba[ctlr]->pdev->dev); + error = scsi_add_host(sh, &h->pdev->dev); if (error) goto fail_host_put; scsi_scan_host(sh); @@ -882,20 +880,20 @@ cciss_scsi_detect(int ctlr) static void cciss_unmap_one(struct pci_dev *pdev, - CommandList_struct *cp, + CommandList_struct *c, size_t buflen, int data_direction) { u64bit addr64; - addr64.val32.lower = cp->SG[0].Addr.lower; - addr64.val32.upper = cp->SG[0].Addr.upper; + addr64.val32.lower = c->SG[0].Addr.lower; + addr64.val32.upper = c->SG[0].Addr.upper; pci_unmap_single(pdev, (dma_addr_t) addr64.val, buflen, data_direction); } static void cciss_map_one(struct pci_dev *pdev, - CommandList_struct *cp, + CommandList_struct *c, unsigned char *buf, size_t buflen, int data_direction) @@ -903,18 +901,18 @@ cciss_map_one(struct pci_dev *pdev, __u64 addr64; addr64 = (__u64) pci_map_single(pdev, buf, buflen, data_direction); - cp->SG[0].Addr.lower = + c->SG[0].Addr.lower = (__u32) (addr64 & (__u64) 0x00000000FFFFFFFF); - cp->SG[0].Addr.upper = + c->SG[0].Addr.upper = (__u32) ((addr64 >> 32) & (__u64) 0x00000000FFFFFFFF); - cp->SG[0].Len = buflen; - cp->Header.SGList = (__u8) 1; /* no. SGs contig in this cmd */ - cp->Header.SGTotal = (__u16) 1; /* total sgs in this cmd list */ + c->SG[0].Len = buflen; + c->Header.SGList = (__u8) 1; /* no. SGs contig in this cmd */ + c->Header.SGTotal = (__u16) 1; /* total sgs in this cmd list */ } static int -cciss_scsi_do_simple_cmd(ctlr_info_t *c, - CommandList_struct *cp, +cciss_scsi_do_simple_cmd(ctlr_info_t *h, + CommandList_struct *c, unsigned char *scsi3addr, unsigned char *cdb, unsigned char cdblen, @@ -923,53 +921,52 @@ cciss_scsi_do_simple_cmd(ctlr_info_t *c, { DECLARE_COMPLETION_ONSTACK(wait); - cp->cmd_type = CMD_IOCTL_PEND; // treat this like an ioctl - cp->scsi_cmd = NULL; - cp->Header.ReplyQueue = 0; // unused in simple mode - memcpy(&cp->Header.LUN, scsi3addr, sizeof(cp->Header.LUN)); - cp->Header.Tag.lower = cp->busaddr; // Use k. address of cmd as tag + c->cmd_type = CMD_IOCTL_PEND; /* treat this like an ioctl */ + c->scsi_cmd = NULL; + c->Header.ReplyQueue = 0; /* unused in simple mode */ + memcpy(&c->Header.LUN, scsi3addr, sizeof(c->Header.LUN)); + c->Header.Tag.lower = c->busaddr; /* Use k. address of cmd as tag */ // Fill in the request block... /* printk("Using scsi3addr 0x%02x%0x2%0x2%0x2%0x2%0x2%0x2%0x2\n", scsi3addr[0], scsi3addr[1], scsi3addr[2], scsi3addr[3], scsi3addr[4], scsi3addr[5], scsi3addr[6], scsi3addr[7]); */ - memset(cp->Request.CDB, 0, sizeof(cp->Request.CDB)); - memcpy(cp->Request.CDB, cdb, cdblen); - cp->Request.Timeout = 0; - cp->Request.CDBLen = cdblen; - cp->Request.Type.Type = TYPE_CMD; - cp->Request.Type.Attribute = ATTR_SIMPLE; - cp->Request.Type.Direction = direction; + memset(c->Request.CDB, 0, sizeof(c->Request.CDB)); + memcpy(c->Request.CDB, cdb, cdblen); + c->Request.Timeout = 0; + c->Request.CDBLen = cdblen; + c->Request.Type.Type = TYPE_CMD; + c->Request.Type.Attribute = ATTR_SIMPLE; + c->Request.Type.Direction = direction; /* Fill in the SG list and do dma mapping */ - cciss_map_one(c->pdev, cp, (unsigned char *) buf, + cciss_map_one(h->pdev, c, (unsigned char *) buf, bufsize, DMA_FROM_DEVICE); - cp->waiting = &wait; - enqueue_cmd_and_start_io(c, cp); + c->waiting = &wait; + enqueue_cmd_and_start_io(h, c); wait_for_completion(&wait); /* undo the dma mapping */ - cciss_unmap_one(c->pdev, cp, bufsize, DMA_FROM_DEVICE); + cciss_unmap_one(h->pdev, c, bufsize, DMA_FROM_DEVICE); return(0); } static void -cciss_scsi_interpret_error(CommandList_struct *cp) +cciss_scsi_interpret_error(CommandList_struct *c) { ErrorInfo_struct *ei; - ei = cp->err_info; + ei = c->err_info; switch(ei->CommandStatus) { case CMD_TARGET_STATUS: printk(KERN_WARNING "cciss: cmd %p has " - "completed with errors\n", cp); + "completed with errors\n", c); printk(KERN_WARNING "cciss: cmd %p " "has SCSI Status = %x\n", - cp, - ei->ScsiStatus); + c, ei->ScsiStatus); if (ei->ScsiStatus == 0) printk(KERN_WARNING "cciss:SCSI status is abnormally zero. " @@ -981,78 +978,75 @@ cciss_scsi_interpret_error(CommandList_struct *cp) printk("UNDERRUN\n"); break; case CMD_DATA_OVERRUN: - printk(KERN_WARNING "cciss: cp %p has" + printk(KERN_WARNING "cciss: %p has" " completed with data overrun " - "reported\n", cp); + "reported\n", c); break; case CMD_INVALID: { /* controller unfortunately reports SCSI passthru's */ /* to non-existent targets as invalid commands. */ - printk(KERN_WARNING "cciss: cp %p is " + printk(KERN_WARNING "cciss: %p is " "reported invalid (probably means " - "target device no longer present)\n", - cp); - /* print_bytes((unsigned char *) cp, sizeof(*cp), 1, 0); - print_cmd(cp); */ + "target device no longer present)\n", c); + /* print_bytes((unsigned char *) c, sizeof(*c), 1, 0); + print_cmd(c); */ } break; case CMD_PROTOCOL_ERR: - printk(KERN_WARNING "cciss: cp %p has " - "protocol error \n", cp); + printk(KERN_WARNING "cciss: %p has " + "protocol error\n", c); break; case CMD_HARDWARE_ERR: /* cmd->result = DID_ERROR << 16; */ - printk(KERN_WARNING "cciss: cp %p had " - " hardware error\n", cp); + printk(KERN_WARNING "cciss: %p had " + " hardware error\n", c); break; case CMD_CONNECTION_LOST: - printk(KERN_WARNING "cciss: cp %p had " - "connection lost\n", cp); + printk(KERN_WARNING "cciss: %p had " + "connection lost\n", c); break; case CMD_ABORTED: - printk(KERN_WARNING "cciss: cp %p was " - "aborted\n", cp); + printk(KERN_WARNING "cciss: %p was " + "aborted\n", c); break; case CMD_ABORT_FAILED: - printk(KERN_WARNING "cciss: cp %p reports " - "abort failed\n", cp); + printk(KERN_WARNING "cciss: %p reports " + "abort failed\n", c); break; case CMD_UNSOLICITED_ABORT: - printk(KERN_WARNING "cciss: cp %p aborted " - "do to an unsolicited abort\n", cp); + printk(KERN_WARNING "cciss: %p aborted " + "do to an unsolicited abort\n", c); break; case CMD_TIMEOUT: - printk(KERN_WARNING "cciss: cp %p timedout\n", - cp); + printk(KERN_WARNING "cciss: %p timedout\n", c); break; default: - printk(KERN_WARNING "cciss: cp %p returned " - "unknown status %x\n", cp, - ei->CommandStatus); + printk(KERN_WARNING "cciss: %p returned " + "unknown status %x\n", c, ei->CommandStatus); } } static int -cciss_scsi_do_inquiry(ctlr_info_t *c, unsigned char *scsi3addr, +cciss_scsi_do_inquiry(ctlr_info_t *h, unsigned char *scsi3addr, unsigned char page, unsigned char *buf, unsigned char bufsize) { int rc; - CommandList_struct *cp; + CommandList_struct *c; char cdb[6]; ErrorInfo_struct *ei; unsigned long flags; - spin_lock_irqsave(CCISS_LOCK(c->ctlr), flags); - cp = scsi_cmd_alloc(c); - spin_unlock_irqrestore(CCISS_LOCK(c->ctlr), flags); + spin_lock_irqsave(&h->lock, flags); + c = scsi_cmd_alloc(h); + spin_unlock_irqrestore(&h->lock, flags); - if (cp == NULL) { /* trouble... */ + if (c == NULL) { /* trouble... */ printk("cmd_alloc returned NULL!\n"); return -1; } - ei = cp->err_info; + ei = c->err_info; cdb[0] = CISS_INQUIRY; cdb[1] = (page != 0); @@ -1060,24 +1054,24 @@ cciss_scsi_do_inquiry(ctlr_info_t *c, unsigned char *scsi3addr, cdb[3] = 0; cdb[4] = bufsize; cdb[5] = 0; - rc = cciss_scsi_do_simple_cmd(c, cp, scsi3addr, cdb, + rc = cciss_scsi_do_simple_cmd(h, c, scsi3addr, cdb, 6, buf, bufsize, XFER_READ); if (rc != 0) return rc; /* something went wrong */ if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) { - cciss_scsi_interpret_error(cp); + cciss_scsi_interpret_error(c); rc = -1; } - spin_lock_irqsave(CCISS_LOCK(c->ctlr), flags); - scsi_cmd_free(c, cp); - spin_unlock_irqrestore(CCISS_LOCK(c->ctlr), flags); + spin_lock_irqsave(&h->lock, flags); + scsi_cmd_free(h, c); + spin_unlock_irqrestore(&h->lock, flags); return rc; } /* Get the device id from inquiry page 0x83 */ -static int cciss_scsi_get_device_id(ctlr_info_t *c, unsigned char *scsi3addr, +static int cciss_scsi_get_device_id(ctlr_info_t *h, unsigned char *scsi3addr, unsigned char *device_id, int buflen) { int rc; @@ -1088,7 +1082,7 @@ static int cciss_scsi_get_device_id(ctlr_info_t *c, unsigned char *scsi3addr, buf = kzalloc(64, GFP_KERNEL); if (!buf) return -1; - rc = cciss_scsi_do_inquiry(c, scsi3addr, 0x83, buf, 64); + rc = cciss_scsi_do_inquiry(h, scsi3addr, 0x83, buf, 64); if (rc == 0) memcpy(device_id, &buf[8], buflen); kfree(buf); @@ -1096,20 +1090,20 @@ static int cciss_scsi_get_device_id(ctlr_info_t *c, unsigned char *scsi3addr, } static int -cciss_scsi_do_report_phys_luns(ctlr_info_t *c, +cciss_scsi_do_report_phys_luns(ctlr_info_t *h, ReportLunData_struct *buf, int bufsize) { int rc; - CommandList_struct *cp; + CommandList_struct *c; unsigned char cdb[12]; unsigned char scsi3addr[8]; ErrorInfo_struct *ei; unsigned long flags; - spin_lock_irqsave(CCISS_LOCK(c->ctlr), flags); - cp = scsi_cmd_alloc(c); - spin_unlock_irqrestore(CCISS_LOCK(c->ctlr), flags); - if (cp == NULL) { /* trouble... */ + spin_lock_irqsave(&h->lock, flags); + c = scsi_cmd_alloc(h); + spin_unlock_irqrestore(&h->lock, flags); + if (c == NULL) { /* trouble... */ printk("cmd_alloc returned NULL!\n"); return -1; } @@ -1128,27 +1122,27 @@ cciss_scsi_do_report_phys_luns(ctlr_info_t *c, cdb[10] = 0; cdb[11] = 0; - rc = cciss_scsi_do_simple_cmd(c, cp, scsi3addr, + rc = cciss_scsi_do_simple_cmd(h, c, scsi3addr, cdb, 12, (unsigned char *) buf, bufsize, XFER_READ); if (rc != 0) return rc; /* something went wrong */ - ei = cp->err_info; + ei = c->err_info; if (ei->CommandStatus != 0 && ei->CommandStatus != CMD_DATA_UNDERRUN) { - cciss_scsi_interpret_error(cp); + cciss_scsi_interpret_error(c); rc = -1; } - spin_lock_irqsave(CCISS_LOCK(c->ctlr), flags); - scsi_cmd_free(c, cp); - spin_unlock_irqrestore(CCISS_LOCK(c->ctlr), flags); + spin_lock_irqsave(&h->lock, flags); + scsi_cmd_free(h, c); + spin_unlock_irqrestore(&h->lock, flags); return rc; } static void -cciss_update_non_disk_devices(int cntl_num, int hostno) +cciss_update_non_disk_devices(ctlr_info_t *h, int hostno) { /* the idea here is we could get notified from /proc that some devices have changed, so we do a report @@ -1181,7 +1175,6 @@ cciss_update_non_disk_devices(int cntl_num, int hostno) ReportLunData_struct *ld_buff; unsigned char *inq_buff; unsigned char scsi3addr[8]; - ctlr_info_t *c; __u32 num_luns=0; unsigned char *ch; struct cciss_scsi_dev_t *currentsd, *this_device; @@ -1189,7 +1182,6 @@ cciss_update_non_disk_devices(int cntl_num, int hostno) int reportlunsize = sizeof(*ld_buff) + CISS_MAX_PHYS_LUN * 8; int i; - c = (ctlr_info_t *) hba[cntl_num]; ld_buff = kzalloc(reportlunsize, GFP_KERNEL); inq_buff = kmalloc(OBDR_TAPE_INQ_SIZE, GFP_KERNEL); currentsd = kzalloc(sizeof(*currentsd) * @@ -1199,7 +1191,7 @@ cciss_update_non_disk_devices(int cntl_num, int hostno) goto out; } this_device = ¤tsd[CCISS_MAX_SCSI_DEVS_PER_HBA]; - if (cciss_scsi_do_report_phys_luns(c, ld_buff, reportlunsize) == 0) { + if (cciss_scsi_do_report_phys_luns(h, ld_buff, reportlunsize) == 0) { ch = &ld_buff->LUNListLength[0]; num_luns = ((ch[0]<<24) | (ch[1]<<16) | (ch[2]<<8) | ch[3]) / 8; if (num_luns > CISS_MAX_PHYS_LUN) { @@ -1223,7 +1215,7 @@ cciss_update_non_disk_devices(int cntl_num, int hostno) memset(inq_buff, 0, OBDR_TAPE_INQ_SIZE); memcpy(&scsi3addr[0], &ld_buff->LUN[i][0], 8); - if (cciss_scsi_do_inquiry(hba[cntl_num], scsi3addr, 0, inq_buff, + if (cciss_scsi_do_inquiry(h, scsi3addr, 0, inq_buff, (unsigned char) OBDR_TAPE_INQ_SIZE) != 0) /* Inquiry failed (msg printed already) */ continue; /* so we will skip this device. */ @@ -1241,7 +1233,7 @@ cciss_update_non_disk_devices(int cntl_num, int hostno) sizeof(this_device->revision)); memset(this_device->device_id, 0, sizeof(this_device->device_id)); - cciss_scsi_get_device_id(hba[cntl_num], scsi3addr, + cciss_scsi_get_device_id(h, scsi3addr, this_device->device_id, sizeof(this_device->device_id)); switch (this_device->devtype) @@ -1268,7 +1260,7 @@ cciss_update_non_disk_devices(int cntl_num, int hostno) case 0x08: /* medium changer */ if (ncurrent >= CCISS_MAX_SCSI_DEVS_PER_HBA) { printk(KERN_INFO "cciss%d: %s ignored, " - "too many devices.\n", cntl_num, + "too many devices.\n", h->ctlr, scsi_device_type(this_device->devtype)); break; } @@ -1280,7 +1272,7 @@ cciss_update_non_disk_devices(int cntl_num, int hostno) } } - adjust_cciss_scsi_table(cntl_num, hostno, currentsd, ncurrent); + adjust_cciss_scsi_table(h, hostno, currentsd, ncurrent); out: kfree(inq_buff); kfree(ld_buff); @@ -1299,12 +1291,12 @@ is_keyword(char *ptr, int len, char *verb) // Thanks to ncr53c8xx.c } static int -cciss_scsi_user_command(int ctlr, int hostno, char *buffer, int length) +cciss_scsi_user_command(ctlr_info_t *h, int hostno, char *buffer, int length) { int arg_len; if ((arg_len = is_keyword(buffer, length, "rescan")) != 0) - cciss_update_non_disk_devices(ctlr, hostno); + cciss_update_non_disk_devices(h, hostno); else return -EINVAL; return length; @@ -1321,20 +1313,16 @@ cciss_scsi_proc_info(struct Scsi_Host *sh, { int buflen, datalen; - ctlr_info_t *ci; + ctlr_info_t *h; int i; - int cntl_num; - - ci = (ctlr_info_t *) sh->hostdata[0]; - if (ci == NULL) /* This really shouldn't ever happen. */ + h = (ctlr_info_t *) sh->hostdata[0]; + if (h == NULL) /* This really shouldn't ever happen. */ return -EINVAL; - cntl_num = ci->ctlr; /* Get our index into the hba[] array */ - if (func == 0) { /* User is reading from /proc/scsi/ciss*?/?* */ buflen = sprintf(buffer, "cciss%d: SCSI host: %d\n", - cntl_num, sh->host_no); + h->ctlr, sh->host_no); /* this information is needed by apps to know which cciss device corresponds to which scsi host number without @@ -1344,8 +1332,9 @@ cciss_scsi_proc_info(struct Scsi_Host *sh, this info is for an app to be able to use to know how to get them back in sync. */ - for (i=0;i<ccissscsi[cntl_num].ndevices;i++) { - struct cciss_scsi_dev_t *sd = &ccissscsi[cntl_num].dev[i]; + for (i = 0; i < ccissscsi[h->ctlr].ndevices; i++) { + struct cciss_scsi_dev_t *sd = + &ccissscsi[h->ctlr].dev[i]; buflen += sprintf(&buffer[buflen], "c%db%dt%dl%d %02d " "0x%02x%02x%02x%02x%02x%02x%02x%02x\n", sh->host_no, sd->bus, sd->target, sd->lun, @@ -1363,15 +1352,15 @@ cciss_scsi_proc_info(struct Scsi_Host *sh, *start = buffer + offset; return(datalen); } else /* User is writing to /proc/scsi/cciss*?/?* ... */ - return cciss_scsi_user_command(cntl_num, sh->host_no, + return cciss_scsi_user_command(h, sh->host_no, buffer, length); } /* cciss_scatter_gather takes a struct scsi_cmnd, (cmd), and does the pci dma mapping and fills in the scatter gather entries of the - cciss command, cp. */ + cciss command, c. */ -static void cciss_scatter_gather(ctlr_info_t *h, CommandList_struct *cp, +static void cciss_scatter_gather(ctlr_info_t *h, CommandList_struct *c, struct scsi_cmnd *cmd) { unsigned int len; @@ -1385,7 +1374,7 @@ static void cciss_scatter_gather(ctlr_info_t *h, CommandList_struct *cp, chained = 0; sg_index = 0; - curr_sg = cp->SG; + curr_sg = c->SG; request_nsgs = scsi_dma_map(cmd); if (request_nsgs) { scsi_for_each_sg(cmd, sg, request_nsgs, i) { @@ -1393,7 +1382,7 @@ static void cciss_scatter_gather(ctlr_info_t *h, CommandList_struct *cp, !chained && request_nsgs - i > 1) { chained = 1; sg_index = 0; - curr_sg = sa->cmd_sg_list[cp->cmdindex]; + curr_sg = sa->cmd_sg_list[c->cmdindex]; } addr64 = (__u64) sg_dma_address(sg); len = sg_dma_len(sg); @@ -1406,19 +1395,19 @@ static void cciss_scatter_gather(ctlr_info_t *h, CommandList_struct *cp, ++sg_index; } if (chained) - cciss_map_sg_chain_block(h, cp, - sa->cmd_sg_list[cp->cmdindex], + cciss_map_sg_chain_block(h, c, + sa->cmd_sg_list[c->cmdindex], (request_nsgs - (h->max_cmd_sgentries - 1)) * sizeof(SGDescriptor_struct)); } /* track how many SG entries we are using */ if (request_nsgs > h->maxSG) h->maxSG = request_nsgs; - cp->Header.SGTotal = (__u8) request_nsgs + chained; + c->Header.SGTotal = (__u8) request_nsgs + chained; if (request_nsgs > h->max_cmd_sgentries) - cp->Header.SGList = h->max_cmd_sgentries; + c->Header.SGList = h->max_cmd_sgentries; else - cp->Header.SGList = cp->Header.SGTotal; + c->Header.SGList = c->Header.SGTotal; return; } @@ -1426,18 +1415,17 @@ static void cciss_scatter_gather(ctlr_info_t *h, CommandList_struct *cp, static int cciss_scsi_queue_command (struct scsi_cmnd *cmd, void (* done)(struct scsi_cmnd *)) { - ctlr_info_t *c; - int ctlr, rc; + ctlr_info_t *h; + int rc; unsigned char scsi3addr[8]; - CommandList_struct *cp; + CommandList_struct *c; unsigned long flags; // Get the ptr to our adapter structure (hba[i]) out of cmd->host. // We violate cmd->host privacy here. (Is there another way?) - c = (ctlr_info_t *) cmd->device->host->hostdata[0]; - ctlr = c->ctlr; + h = (ctlr_info_t *) cmd->device->host->hostdata[0]; - rc = lookup_scsi3addr(ctlr, cmd->device->channel, cmd->device->id, + rc = lookup_scsi3addr(h, cmd->device->channel, cmd->device->id, cmd->device->lun, scsi3addr); if (rc != 0) { /* the scsi nexus does not match any that we presented... */ @@ -1449,18 +1437,13 @@ cciss_scsi_queue_command (struct scsi_cmnd *cmd, void (* done)(struct scsi_cmnd return 0; } - /* printk("cciss_queue_command, p=%p, cmd=0x%02x, c%db%dt%dl%d\n", - cmd, cmd->cmnd[0], ctlr, cmd->channel, cmd->target, cmd->lun);*/ - // printk("q:%p:c%db%dt%dl%d ", cmd, ctlr, cmd->channel, - // cmd->target, cmd->lun); - /* Ok, we have a reasonable scsi nexus, so send the cmd down, and see what the device thinks of it. */ - spin_lock_irqsave(CCISS_LOCK(ctlr), flags); - cp = scsi_cmd_alloc(c); - spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); - if (cp == NULL) { /* trouble... */ + spin_lock_irqsave(&h->lock, flags); + c = scsi_cmd_alloc(h); + spin_unlock_irqrestore(&h->lock, flags); + if (c == NULL) { /* trouble... */ printk("scsi_cmd_alloc returned NULL!\n"); /* FIXME: next 3 lines are -> BAD! <- */ cmd->result = DID_NO_CONNECT << 16; @@ -1472,35 +1455,41 @@ cciss_scsi_queue_command (struct scsi_cmnd *cmd, void (* done)(struct scsi_cmnd cmd->scsi_done = done; // save this for use by completion code - // save cp in case we have to abort it - cmd->host_scribble = (unsigned char *) cp; + /* save c in case we have to abort it */ + cmd->host_scribble = (unsigned char *) c; - cp->cmd_type = CMD_SCSI; - cp->scsi_cmd = cmd; - cp->Header.ReplyQueue = 0; // unused in simple mode - memcpy(&cp->Header.LUN.LunAddrBytes[0], &scsi3addr[0], 8); - cp->Header.Tag.lower = cp->busaddr; // Use k. address of cmd as tag + c->cmd_type = CMD_SCSI; + c->scsi_cmd = cmd; + c->Header.ReplyQueue = 0; /* unused in simple mode */ + memcpy(&c->Header.LUN.LunAddrBytes[0], &scsi3addr[0], 8); + c->Header.Tag.lower = c->busaddr; /* Use k. address of cmd as tag */ // Fill in the request block... - cp->Request.Timeout = 0; - memset(cp->Request.CDB, 0, sizeof(cp->Request.CDB)); - BUG_ON(cmd->cmd_len > sizeof(cp->Request.CDB)); - cp->Request.CDBLen = cmd->cmd_len; - memcpy(cp->Request.CDB, cmd->cmnd, cmd->cmd_len); - cp->Request.Type.Type = TYPE_CMD; - cp->Request.Type.Attribute = ATTR_SIMPLE; + c->Request.Timeout = 0; + memset(c->Request.CDB, 0, sizeof(c->Request.CDB)); + BUG_ON(cmd->cmd_len > sizeof(c->Request.CDB)); + c->Request.CDBLen = cmd->cmd_len; + memcpy(c->Request.CDB, cmd->cmnd, cmd->cmd_len); + c->Request.Type.Type = TYPE_CMD; + c->Request.Type.Attribute = ATTR_SIMPLE; switch(cmd->sc_data_direction) { - case DMA_TO_DEVICE: cp->Request.Type.Direction = XFER_WRITE; break; - case DMA_FROM_DEVICE: cp->Request.Type.Direction = XFER_READ; break; - case DMA_NONE: cp->Request.Type.Direction = XFER_NONE; break; + case DMA_TO_DEVICE: + c->Request.Type.Direction = XFER_WRITE; + break; + case DMA_FROM_DEVICE: + c->Request.Type.Direction = XFER_READ; + break; + case DMA_NONE: + c->Request.Type.Direction = XFER_NONE; + break; case DMA_BIDIRECTIONAL: // This can happen if a buggy application does a scsi passthru // and sets both inlen and outlen to non-zero. ( see // ../scsi/scsi_ioctl.c:scsi_ioctl_send_command() ) - cp->Request.Type.Direction = XFER_RSVD; + c->Request.Type.Direction = XFER_RSVD; // This is technically wrong, and cciss controllers should // reject it with CMD_INVALID, which is the most correct // response, but non-fibre backends appear to let it @@ -1516,14 +1505,13 @@ cciss_scsi_queue_command (struct scsi_cmnd *cmd, void (* done)(struct scsi_cmnd BUG(); break; } - cciss_scatter_gather(c, cp, cmd); - enqueue_cmd_and_start_io(c, cp); + cciss_scatter_gather(h, c, cmd); + enqueue_cmd_and_start_io(h, c); /* the cmd'll come back via intr handler in complete_scsi_command() */ return 0; } -static void -cciss_unregister_scsi(int ctlr) +static void cciss_unregister_scsi(ctlr_info_t *h) { struct cciss_scsi_adapter_data_t *sa; struct cciss_scsi_cmd_stack_t *stk; @@ -1531,59 +1519,59 @@ cciss_unregister_scsi(int ctlr) /* we are being forcibly unloaded, and may not refuse. */ - spin_lock_irqsave(CCISS_LOCK(ctlr), flags); - sa = hba[ctlr]->scsi_ctlr; + spin_lock_irqsave(&h->lock, flags); + sa = h->scsi_ctlr; stk = &sa->cmd_stack; /* if we weren't ever actually registered, don't unregister */ if (sa->registered) { - spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); + spin_unlock_irqrestore(&h->lock, flags); scsi_remove_host(sa->scsi_host); scsi_host_put(sa->scsi_host); - spin_lock_irqsave(CCISS_LOCK(ctlr), flags); + spin_lock_irqsave(&h->lock, flags); } /* set scsi_host to NULL so our detect routine will find us on register */ sa->scsi_host = NULL; - spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); - scsi_cmd_stack_free(ctlr); + spin_unlock_irqrestore(&h->lock, flags); + scsi_cmd_stack_free(h); kfree(sa); } -static int -cciss_engage_scsi(int ctlr) +static int cciss_engage_scsi(ctlr_info_t *h) { struct cciss_scsi_adapter_data_t *sa; struct cciss_scsi_cmd_stack_t *stk; unsigned long flags; - spin_lock_irqsave(CCISS_LOCK(ctlr), flags); - sa = hba[ctlr]->scsi_ctlr; + spin_lock_irqsave(&h->lock, flags); + sa = h->scsi_ctlr; stk = &sa->cmd_stack; if (sa->registered) { - printk("cciss%d: SCSI subsystem already engaged.\n", ctlr); - spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); + printk(KERN_INFO "cciss%d: SCSI subsystem already engaged.\n", + h->ctlr); + spin_unlock_irqrestore(&h->lock, flags); return -ENXIO; } sa->registered = 1; - spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); - cciss_update_non_disk_devices(ctlr, -1); - cciss_scsi_detect(ctlr); + spin_unlock_irqrestore(&h->lock, flags); + cciss_update_non_disk_devices(h, -1); + cciss_scsi_detect(h); return 0; } static void -cciss_seq_tape_report(struct seq_file *seq, int ctlr) +cciss_seq_tape_report(struct seq_file *seq, ctlr_info_t *h) { unsigned long flags; - CPQ_TAPE_LOCK(ctlr, flags); + CPQ_TAPE_LOCK(h, flags); seq_printf(seq, "Sequential access devices: %d\n\n", - ccissscsi[ctlr].ndevices); - CPQ_TAPE_UNLOCK(ctlr, flags); + ccissscsi[h->ctlr].ndevices); + CPQ_TAPE_UNLOCK(h, flags); } static int wait_for_device_to_become_ready(ctlr_info_t *h, @@ -1615,7 +1603,7 @@ static int wait_for_device_to_become_ready(ctlr_info_t *h, waittime = waittime * 2; /* Send the Test Unit Ready */ - rc = fill_cmd(c, TEST_UNIT_READY, h->ctlr, NULL, 0, 0, + rc = fill_cmd(h, c, TEST_UNIT_READY, NULL, 0, 0, lunaddr, TYPE_CMD); if (rc == 0) rc = sendcmd_withirq_core(h, c, 0); @@ -1672,26 +1660,25 @@ static int cciss_eh_device_reset_handler(struct scsi_cmnd *scsicmd) int rc; CommandList_struct *cmd_in_trouble; unsigned char lunaddr[8]; - ctlr_info_t *c; - int ctlr; + ctlr_info_t *h; /* find the controller to which the command to be aborted was sent */ - c = (ctlr_info_t *) scsicmd->device->host->hostdata[0]; - if (c == NULL) /* paranoia */ + h = (ctlr_info_t *) scsicmd->device->host->hostdata[0]; + if (h == NULL) /* paranoia */ return FAILED; - ctlr = c->ctlr; - printk(KERN_WARNING "cciss%d: resetting tape drive or medium changer.\n", ctlr); + printk(KERN_WARNING + "cciss%d: resetting tape drive or medium changer.\n", h->ctlr); /* find the command that's giving us trouble */ cmd_in_trouble = (CommandList_struct *) scsicmd->host_scribble; if (cmd_in_trouble == NULL) /* paranoia */ return FAILED; memcpy(lunaddr, &cmd_in_trouble->Header.LUN.LunAddrBytes[0], 8); /* send a reset to the SCSI LUN which the command was sent to */ - rc = sendcmd_withirq(CCISS_RESET_MSG, ctlr, NULL, 0, 0, lunaddr, + rc = sendcmd_withirq(h, CCISS_RESET_MSG, NULL, 0, 0, lunaddr, TYPE_MSG); - if (rc == 0 && wait_for_device_to_become_ready(c, lunaddr) == 0) + if (rc == 0 && wait_for_device_to_become_ready(h, lunaddr) == 0) return SUCCESS; - printk(KERN_WARNING "cciss%d: resetting device failed.\n", ctlr); + printk(KERN_WARNING "cciss%d: resetting device failed.\n", h->ctlr); return FAILED; } @@ -1700,22 +1687,20 @@ static int cciss_eh_abort_handler(struct scsi_cmnd *scsicmd) int rc; CommandList_struct *cmd_to_abort; unsigned char lunaddr[8]; - ctlr_info_t *c; - int ctlr; + ctlr_info_t *h; /* find the controller to which the command to be aborted was sent */ - c = (ctlr_info_t *) scsicmd->device->host->hostdata[0]; - if (c == NULL) /* paranoia */ + h = (ctlr_info_t *) scsicmd->device->host->hostdata[0]; + if (h == NULL) /* paranoia */ return FAILED; - ctlr = c->ctlr; - printk(KERN_WARNING "cciss%d: aborting tardy SCSI cmd\n", ctlr); + printk(KERN_WARNING "cciss%d: aborting tardy SCSI cmd\n", h->ctlr); /* find the command to be aborted */ cmd_to_abort = (CommandList_struct *) scsicmd->host_scribble; if (cmd_to_abort == NULL) /* paranoia */ return FAILED; memcpy(lunaddr, &cmd_to_abort->Header.LUN.LunAddrBytes[0], 8); - rc = sendcmd_withirq(CCISS_ABORT_MSG, ctlr, &cmd_to_abort->Header.Tag, + rc = sendcmd_withirq(h, CCISS_ABORT_MSG, &cmd_to_abort->Header.Tag, 0, 0, lunaddr, TYPE_MSG); if (rc == 0) return SUCCESS; |