diff options
Diffstat (limited to 'drivers/target/target_core_pscsi.c')
| -rw-r--r-- | drivers/target/target_core_pscsi.c | 316 |
1 files changed, 113 insertions, 203 deletions
diff --git a/drivers/target/target_core_pscsi.c b/drivers/target/target_core_pscsi.c index 331d423fd0e0..2b7b0da9146d 100644 --- a/drivers/target/target_core_pscsi.c +++ b/drivers/target/target_core_pscsi.c @@ -55,24 +55,6 @@ static struct se_subsystem_api pscsi_template; static void pscsi_req_done(struct request *, int); -/* pscsi_get_sh(): - * - * - */ -static struct Scsi_Host *pscsi_get_sh(u32 host_no) -{ - struct Scsi_Host *sh = NULL; - - sh = scsi_host_lookup(host_no); - if (IS_ERR(sh)) { - printk(KERN_ERR "Unable to locate SCSI HBA with Host ID:" - " %u\n", host_no); - return NULL; - } - - return sh; -} - /* pscsi_attach_hba(): * * pscsi_get_sh() used scsi_host_lookup() to locate struct Scsi_Host. @@ -80,28 +62,23 @@ static struct Scsi_Host *pscsi_get_sh(u32 host_no) */ static int pscsi_attach_hba(struct se_hba *hba, u32 host_id) { - int hba_depth; struct pscsi_hba_virt *phv; phv = kzalloc(sizeof(struct pscsi_hba_virt), GFP_KERNEL); - if (!(phv)) { - printk(KERN_ERR "Unable to allocate struct pscsi_hba_virt\n"); - return -1; + if (!phv) { + pr_err("Unable to allocate struct pscsi_hba_virt\n"); + return -ENOMEM; } phv->phv_host_id = host_id; phv->phv_mode = PHV_VIRUTAL_HOST_ID; - hba_depth = PSCSI_VIRTUAL_HBA_DEPTH; - atomic_set(&hba->left_queue_depth, hba_depth); - atomic_set(&hba->max_queue_depth, hba_depth); - hba->hba_ptr = (void *)phv; + hba->hba_ptr = phv; - printk(KERN_INFO "CORE_HBA[%d] - TCM SCSI HBA Driver %s on" + pr_debug("CORE_HBA[%d] - TCM SCSI HBA Driver %s on" " Generic Target Core Stack %s\n", hba->hba_id, PSCSI_VERSION, TARGET_CORE_MOD_VERSION); - printk(KERN_INFO "CORE_HBA[%d] - Attached SCSI HBA to Generic" - " Target Core with TCQ Depth: %d\n", hba->hba_id, - atomic_read(&hba->max_queue_depth)); + pr_debug("CORE_HBA[%d] - Attached SCSI HBA to Generic\n", + hba->hba_id); return 0; } @@ -114,12 +91,12 @@ static void pscsi_detach_hba(struct se_hba *hba) if (scsi_host) { scsi_host_put(scsi_host); - printk(KERN_INFO "CORE_HBA[%d] - Detached SCSI HBA: %s from" + pr_debug("CORE_HBA[%d] - Detached SCSI HBA: %s from" " Generic Target Core\n", hba->hba_id, (scsi_host->hostt->name) ? (scsi_host->hostt->name) : "Unknown"); } else - printk(KERN_INFO "CORE_HBA[%d] - Detached Virtual SCSI HBA" + pr_debug("CORE_HBA[%d] - Detached Virtual SCSI HBA" " from Generic Target Core\n", hba->hba_id); kfree(phv); @@ -130,20 +107,17 @@ static int pscsi_pmode_enable_hba(struct se_hba *hba, unsigned long mode_flag) { struct pscsi_hba_virt *phv = (struct pscsi_hba_virt *)hba->hba_ptr; struct Scsi_Host *sh = phv->phv_lld_host; - int hba_depth = PSCSI_VIRTUAL_HBA_DEPTH; /* * Release the struct Scsi_Host */ - if (!(mode_flag)) { - if (!(sh)) + if (!mode_flag) { + if (!sh) return 0; phv->phv_lld_host = NULL; phv->phv_mode = PHV_VIRUTAL_HOST_ID; - atomic_set(&hba->left_queue_depth, hba_depth); - atomic_set(&hba->max_queue_depth, hba_depth); - printk(KERN_INFO "CORE_HBA[%d] - Disabled pSCSI HBA Passthrough" + pr_debug("CORE_HBA[%d] - Disabled pSCSI HBA Passthrough" " %s\n", hba->hba_id, (sh->hostt->name) ? (sh->hostt->name) : "Unknown"); @@ -154,27 +128,17 @@ static int pscsi_pmode_enable_hba(struct se_hba *hba, unsigned long mode_flag) * Otherwise, locate struct Scsi_Host from the original passed * pSCSI Host ID and enable for phba mode */ - sh = pscsi_get_sh(phv->phv_host_id); - if (!(sh)) { - printk(KERN_ERR "pSCSI: Unable to locate SCSI Host for" + sh = scsi_host_lookup(phv->phv_host_id); + if (IS_ERR(sh)) { + pr_err("pSCSI: Unable to locate SCSI Host for" " phv_host_id: %d\n", phv->phv_host_id); - return -1; + return PTR_ERR(sh); } - /* - * Usually the SCSI LLD will use the hostt->can_queue value to define - * its HBA TCQ depth. Some other drivers (like 2.6 megaraid) don't set - * this at all and set sh->can_queue at runtime. - */ - hba_depth = (sh->hostt->can_queue > sh->can_queue) ? - sh->hostt->can_queue : sh->can_queue; - - atomic_set(&hba->left_queue_depth, hba_depth); - atomic_set(&hba->max_queue_depth, hba_depth); phv->phv_lld_host = sh; phv->phv_mode = PHV_LLD_SCSI_HOST_NO; - printk(KERN_INFO "CORE_HBA[%d] - Enabled pSCSI HBA Passthrough %s\n", + pr_debug("CORE_HBA[%d] - Enabled pSCSI HBA Passthrough %s\n", hba->hba_id, (sh->hostt->name) ? (sh->hostt->name) : "Unknown"); return 1; @@ -236,7 +200,7 @@ pscsi_get_inquiry_vpd_serial(struct scsi_device *sdev, struct t10_wwn *wwn) buf = kzalloc(INQUIRY_VPD_SERIAL_LEN, GFP_KERNEL); if (!buf) - return -1; + return -ENOMEM; memset(cdb, 0, MAX_COMMAND_SIZE); cdb[0] = INQUIRY; @@ -259,7 +223,7 @@ pscsi_get_inquiry_vpd_serial(struct scsi_device *sdev, struct t10_wwn *wwn) out_free: kfree(buf); - return -1; + return -EPERM; } static void @@ -293,15 +257,15 @@ pscsi_get_inquiry_vpd_device_ident(struct scsi_device *sdev, page_83 = &buf[off]; ident_len = page_83[3]; if (!ident_len) { - printk(KERN_ERR "page_83[3]: identifier" + pr_err("page_83[3]: identifier" " length zero!\n"); break; } - printk(KERN_INFO "T10 VPD Identifer Length: %d\n", ident_len); + pr_debug("T10 VPD Identifer Length: %d\n", ident_len); vpd = kzalloc(sizeof(struct t10_vpd), GFP_KERNEL); if (!vpd) { - printk(KERN_ERR "Unable to allocate memory for" + pr_err("Unable to allocate memory for" " struct t10_vpd\n"); goto out; } @@ -353,7 +317,7 @@ static struct se_device *pscsi_add_device_to_list( if (!sd->queue_depth) { sd->queue_depth = PSCSI_DEFAULT_QUEUEDEPTH; - printk(KERN_ERR "Set broken SCSI Device %d:%d:%d" + pr_err("Set broken SCSI Device %d:%d:%d" " queue_depth to %d\n", sd->channel, sd->id, sd->lun, sd->queue_depth); } @@ -364,10 +328,8 @@ static struct se_device *pscsi_add_device_to_list( q = sd->request_queue; limits = &dev_limits.limits; limits->logical_block_size = sd->sector_size; - limits->max_hw_sectors = (sd->host->max_sectors > queue_max_hw_sectors(q)) ? - queue_max_hw_sectors(q) : sd->host->max_sectors; - limits->max_sectors = (sd->host->max_sectors > queue_max_sectors(q)) ? - queue_max_sectors(q) : sd->host->max_sectors; + limits->max_hw_sectors = min_t(int, sd->host->max_sectors, queue_max_hw_sectors(q)); + limits->max_sectors = min_t(int, sd->host->max_sectors, queue_max_sectors(q)); dev_limits.hw_queue_depth = sd->queue_depth; dev_limits.queue_depth = sd->queue_depth; /* @@ -391,9 +353,9 @@ static struct se_device *pscsi_add_device_to_list( pdv->pdv_sd = sd; dev = transport_add_device_to_core_hba(hba, &pscsi_template, - se_dev, dev_flags, (void *)pdv, + se_dev, dev_flags, pdv, &dev_limits, NULL, NULL); - if (!(dev)) { + if (!dev) { pdv->pdv_sd = NULL; return NULL; } @@ -423,14 +385,14 @@ static void *pscsi_allocate_virtdevice(struct se_hba *hba, const char *name) struct pscsi_dev_virt *pdv; pdv = kzalloc(sizeof(struct pscsi_dev_virt), GFP_KERNEL); - if (!(pdv)) { - printk(KERN_ERR "Unable to allocate memory for struct pscsi_dev_virt\n"); + if (!pdv) { + pr_err("Unable to allocate memory for struct pscsi_dev_virt\n"); return NULL; } pdv->pdv_se_hba = hba; - printk(KERN_INFO "PSCSI: Allocated pdv: %p for %s\n", pdv, name); - return (void *)pdv; + pr_debug("PSCSI: Allocated pdv: %p for %s\n", pdv, name); + return pdv; } /* @@ -450,7 +412,7 @@ static struct se_device *pscsi_create_type_disk( u32 dev_flags = 0; if (scsi_device_get(sd)) { - printk(KERN_ERR "scsi_device_get() failed for %d:%d:%d:%d\n", + pr_err("scsi_device_get() failed for %d:%d:%d:%d\n", sh->host_no, sd->channel, sd->id, sd->lun); spin_unlock_irq(sh->host_lock); return NULL; @@ -463,19 +425,19 @@ static struct se_device *pscsi_create_type_disk( bd = blkdev_get_by_path(se_dev->se_dev_udev_path, FMODE_WRITE|FMODE_READ|FMODE_EXCL, pdv); if (IS_ERR(bd)) { - printk(KERN_ERR "pSCSI: blkdev_get_by_path() failed\n"); + pr_err("pSCSI: blkdev_get_by_path() failed\n"); scsi_device_put(sd); return NULL; } pdv->pdv_bd = bd; dev = pscsi_add_device_to_list(hba, se_dev, pdv, sd, dev_flags); - if (!(dev)) { + if (!dev) { blkdev_put(pdv->pdv_bd, FMODE_WRITE|FMODE_READ|FMODE_EXCL); scsi_device_put(sd); return NULL; } - printk(KERN_INFO "CORE_PSCSI[%d] - Added TYPE_DISK for %d:%d:%d:%d\n", + pr_debug("CORE_PSCSI[%d] - Added TYPE_DISK for %d:%d:%d:%d\n", phv->phv_host_id, sh->host_no, sd->channel, sd->id, sd->lun); return dev; @@ -497,7 +459,7 @@ static struct se_device *pscsi_create_type_rom( u32 dev_flags = 0; if (scsi_device_get(sd)) { - printk(KERN_ERR "scsi_device_get() failed for %d:%d:%d:%d\n", + pr_err("scsi_device_get() failed for %d:%d:%d:%d\n", sh->host_no, sd->channel, sd->id, sd->lun); spin_unlock_irq(sh->host_lock); return NULL; @@ -505,11 +467,11 @@ static struct se_device *pscsi_create_type_rom( spin_unlock_irq(sh->host_lock); dev = pscsi_add_device_to_list(hba, se_dev, pdv, sd, dev_flags); - if (!(dev)) { + if (!dev) { scsi_device_put(sd); return NULL; } - printk(KERN_INFO "CORE_PSCSI[%d] - Added Type: %s for %d:%d:%d:%d\n", + pr_debug("CORE_PSCSI[%d] - Added Type: %s for %d:%d:%d:%d\n", phv->phv_host_id, scsi_device_type(sd->type), sh->host_no, sd->channel, sd->id, sd->lun); @@ -533,10 +495,10 @@ static struct se_device *pscsi_create_type_other( spin_unlock_irq(sh->host_lock); dev = pscsi_add_device_to_list(hba, se_dev, pdv, sd, dev_flags); - if (!(dev)) + if (!dev) return NULL; - printk(KERN_INFO "CORE_PSCSI[%d] - Added Type: %s for %d:%d:%d:%d\n", + pr_debug("CORE_PSCSI[%d] - Added Type: %s for %d:%d:%d:%d\n", phv->phv_host_id, scsi_device_type(sd->type), sh->host_no, sd->channel, sd->id, sd->lun); @@ -555,8 +517,8 @@ static struct se_device *pscsi_create_virtdevice( struct Scsi_Host *sh = phv->phv_lld_host; int legacy_mode_enable = 0; - if (!(pdv)) { - printk(KERN_ERR "Unable to locate struct pscsi_dev_virt" + if (!pdv) { + pr_err("Unable to locate struct pscsi_dev_virt" " parameter\n"); return ERR_PTR(-EINVAL); } @@ -564,9 +526,9 @@ static struct se_device *pscsi_create_virtdevice( * If not running in PHV_LLD_SCSI_HOST_NO mode, locate the * struct Scsi_Host we will need to bring the TCM/pSCSI object online */ - if (!(sh)) { + if (!sh) { if (phv->phv_mode == PHV_LLD_SCSI_HOST_NO) { - printk(KERN_ERR "pSCSI: Unable to locate struct" + pr_err("pSCSI: Unable to locate struct" " Scsi_Host for PHV_LLD_SCSI_HOST_NO\n"); return ERR_PTR(-ENODEV); } @@ -575,7 +537,7 @@ static struct se_device *pscsi_create_virtdevice( * reference, we enforce that udev_path has been set */ if (!(se_dev->su_dev_flags & SDF_USING_UDEV_PATH)) { - printk(KERN_ERR "pSCSI: udev_path attribute has not" + pr_err("pSCSI: udev_path attribute has not" " been set before ENABLE=1\n"); return ERR_PTR(-EINVAL); } @@ -586,8 +548,8 @@ static struct se_device *pscsi_create_virtdevice( */ if (!(pdv->pdv_flags & PDF_HAS_VIRT_HOST_ID)) { spin_lock(&hba->device_lock); - if (!(list_empty(&hba->hba_dev_list))) { - printk(KERN_ERR "pSCSI: Unable to set hba_mode" + if (!list_empty(&hba->hba_dev_list)) { + pr_err("pSCSI: Unable to set hba_mode" " with active devices\n"); spin_unlock(&hba->device_lock); return ERR_PTR(-EEXIST); @@ -601,16 +563,16 @@ static struct se_device *pscsi_create_virtdevice( hba->hba_flags |= HBA_FLAGS_PSCSI_MODE; sh = phv->phv_lld_host; } else { - sh = pscsi_get_sh(pdv->pdv_host_id); - if (!(sh)) { - printk(KERN_ERR "pSCSI: Unable to locate" + sh = scsi_host_lookup(pdv->pdv_host_id); + if (IS_ERR(sh)) { + pr_err("pSCSI: Unable to locate" " pdv_host_id: %d\n", pdv->pdv_host_id); - return ERR_PTR(-ENODEV); + return (struct se_device *) sh; } } } else { if (phv->phv_mode == PHV_VIRUTAL_HOST_ID) { - printk(KERN_ERR "pSCSI: PHV_VIRUTAL_HOST_ID set while" + pr_err("pSCSI: PHV_VIRUTAL_HOST_ID set while" " struct Scsi_Host exists\n"); return ERR_PTR(-EEXIST); } @@ -639,7 +601,7 @@ static struct se_device *pscsi_create_virtdevice( break; } - if (!(dev)) { + if (!dev) { if (phv->phv_mode == PHV_VIRUTAL_HOST_ID) scsi_host_put(sh); else if (legacy_mode_enable) { @@ -653,7 +615,7 @@ static struct se_device *pscsi_create_virtdevice( } spin_unlock_irq(sh->host_lock); - printk(KERN_ERR "pSCSI: Unable to locate %d:%d:%d:%d\n", sh->host_no, + pr_err("pSCSI: Unable to locate %d:%d:%d:%d\n", sh->host_no, pdv->pdv_channel_id, pdv->pdv_target_id, pdv->pdv_lun_id); if (phv->phv_mode == PHV_VIRUTAL_HOST_ID) @@ -728,13 +690,12 @@ static int pscsi_transport_complete(struct se_task *task) */ if (((cdb[0] == MODE_SENSE) || (cdb[0] == MODE_SENSE_10)) && (status_byte(result) << 1) == SAM_STAT_GOOD) { - if (!TASK_CMD(task)->se_deve) + if (!task->task_se_cmd->se_deve) goto after_mode_sense; - if (TASK_CMD(task)->se_deve->lun_flags & + if (task->task_se_cmd->se_deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY) { - unsigned char *buf = (unsigned char *) - T_TASK(task->task_se_cmd)->t_task_buf; + unsigned char *buf = transport_kmap_first_data_page(task->task_se_cmd); if (cdb[0] == MODE_SENSE_10) { if (!(buf[3] & 0x80)) @@ -743,6 +704,8 @@ static int pscsi_transport_complete(struct se_task *task) if (!(buf[2] & 0x80)) buf[2] |= 0x80; } + + transport_kunmap_first_data_page(task->task_se_cmd); } } after_mode_sense: @@ -766,8 +729,8 @@ after_mode_sense: u32 blocksize; buf = sg_virt(&sg[0]); - if (!(buf)) { - printk(KERN_ERR "Unable to get buf for scatterlist\n"); + if (!buf) { + pr_err("Unable to get buf for scatterlist\n"); goto after_mode_select; } @@ -797,34 +760,20 @@ after_mode_select: } static struct se_task * -pscsi_alloc_task(struct se_cmd *cmd) +pscsi_alloc_task(unsigned char *cdb) { struct pscsi_plugin_task *pt; - unsigned char *cdb = T_TASK(cmd)->t_task_cdb; - pt = kzalloc(sizeof(struct pscsi_plugin_task), GFP_KERNEL); + /* + * Dynamically alloc cdb space, since it may be larger than + * TCM_MAX_COMMAND_SIZE + */ + pt = kzalloc(sizeof(*pt) + scsi_command_size(cdb), GFP_KERNEL); if (!pt) { - printk(KERN_ERR "Unable to allocate struct pscsi_plugin_task\n"); + pr_err("Unable to allocate struct pscsi_plugin_task\n"); return NULL; } - /* - * If TCM Core is signaling a > TCM_MAX_COMMAND_SIZE allocation, - * allocate the extended CDB buffer for per struct se_task context - * pt->pscsi_cdb now. - */ - if (T_TASK(cmd)->t_task_cdb != T_TASK(cmd)->__t_task_cdb) { - - pt->pscsi_cdb = kzalloc(scsi_command_size(cdb), GFP_KERNEL); - if (!(pt->pscsi_cdb)) { - printk(KERN_ERR "pSCSI: Unable to allocate extended" - " pt->pscsi_cdb\n"); - kfree(pt); - return NULL; - } - } else - pt->pscsi_cdb = &pt->__pscsi_cdb[0]; - return &pt->pscsi_task; } @@ -849,7 +798,7 @@ static inline void pscsi_blk_init_request( * also set the end_io_data pointer.to struct se_task. */ req->end_io = pscsi_req_done; - req->end_io_data = (void *)task; + req->end_io_data = task; /* * Load the referenced struct se_task's SCSI CDB into * include/linux/blkdev.h:struct request->cmd @@ -859,7 +808,7 @@ static inline void pscsi_blk_init_request( /* * Setup pointer for outgoing sense data. */ - req->sense = (void *)&pt->pscsi_sense[0]; + req->sense = &pt->pscsi_sense[0]; req->sense_len = 0; } @@ -874,8 +823,8 @@ static int pscsi_blk_get_request(struct se_task *task) pt->pscsi_req = blk_get_request(pdv->pdv_sd->request_queue, (task->task_data_direction == DMA_TO_DEVICE), GFP_KERNEL); - if (!(pt->pscsi_req) || IS_ERR(pt->pscsi_req)) { - printk(KERN_ERR "PSCSI: blk_get_request() failed: %ld\n", + if (!pt->pscsi_req || IS_ERR(pt->pscsi_req)) { + pr_err("PSCSI: blk_get_request() failed: %ld\n", IS_ERR(pt->pscsi_req)); return PYX_TRANSPORT_LU_COMM_FAILURE; } @@ -920,15 +869,8 @@ static int pscsi_do_task(struct se_task *task) static void pscsi_free_task(struct se_task *task) { struct pscsi_plugin_task *pt = PSCSI_TASK(task); - struct se_cmd *cmd = task->task_se_cmd; /* - * Release the extended CDB allocation from pscsi_alloc_task() - * if one exists. - */ - if (T_TASK(cmd)->t_task_cdb != T_TASK(cmd)->__t_task_cdb) - kfree(pt->pscsi_cdb); - /* * We do not release the bio(s) here associated with this task, as * this is handled by bio_put() and pscsi_bi_endio(). */ @@ -973,7 +915,7 @@ static ssize_t pscsi_set_configfs_dev_params(struct se_hba *hba, switch (token) { case Opt_scsi_host_id: if (phv->phv_mode == PHV_LLD_SCSI_HOST_NO) { - printk(KERN_ERR "PSCSI[%d]: Unable to accept" + pr_err("PSCSI[%d]: Unable to accept" " scsi_host_id while phv_mode ==" " PHV_LLD_SCSI_HOST_NO\n", phv->phv_host_id); @@ -982,14 +924,14 @@ static ssize_t pscsi_set_configfs_dev_params(struct se_hba *hba, } match_int(args, &arg); pdv->pdv_host_id = arg; - printk(KERN_INFO "PSCSI[%d]: Referencing SCSI Host ID:" + pr_debug("PSCSI[%d]: Referencing SCSI Host ID:" " %d\n", phv->phv_host_id, pdv->pdv_host_id); pdv->pdv_flags |= PDF_HAS_VIRT_HOST_ID; break; case Opt_scsi_channel_id: match_int(args, &arg); pdv->pdv_channel_id = arg; - printk(KERN_INFO "PSCSI[%d]: Referencing SCSI Channel" + pr_debug("PSCSI[%d]: Referencing SCSI Channel" " ID: %d\n", phv->phv_host_id, pdv->pdv_channel_id); pdv->pdv_flags |= PDF_HAS_CHANNEL_ID; @@ -997,7 +939,7 @@ static ssize_t pscsi_set_configfs_dev_params(struct se_hba *hba, case Opt_scsi_target_id: match_int(args, &arg); pdv->pdv_target_id = arg; - printk(KERN_INFO "PSCSI[%d]: Referencing SCSI Target" + pr_debug("PSCSI[%d]: Referencing SCSI Target" " ID: %d\n", phv->phv_host_id, pdv->pdv_target_id); pdv->pdv_flags |= PDF_HAS_TARGET_ID; @@ -1005,7 +947,7 @@ static ssize_t pscsi_set_configfs_dev_params(struct se_hba *hba, case Opt_scsi_lun_id: match_int(args, &arg); pdv->pdv_lun_id = arg; - printk(KERN_INFO "PSCSI[%d]: Referencing SCSI LUN ID:" + pr_debug("PSCSI[%d]: Referencing SCSI LUN ID:" " %d\n", phv->phv_host_id, pdv->pdv_lun_id); pdv->pdv_flags |= PDF_HAS_LUN_ID; break; @@ -1028,9 +970,9 @@ static ssize_t pscsi_check_configfs_dev_params( if (!(pdv->pdv_flags & PDF_HAS_CHANNEL_ID) || !(pdv->pdv_flags & PDF_HAS_TARGET_ID) || !(pdv->pdv_flags & PDF_HAS_LUN_ID)) { - printk(KERN_ERR "Missing scsi_channel_id=, scsi_target_id= and" + pr_err("Missing scsi_channel_id=, scsi_target_id= and" " scsi_lun_id= parameters\n"); - return -1; + return -EINVAL; } return 0; @@ -1090,7 +1032,7 @@ static void pscsi_bi_endio(struct bio *bio, int error) bio_put(bio); } -static inline struct bio *pscsi_get_bio(struct pscsi_dev_virt *pdv, int sg_num) +static inline struct bio *pscsi_get_bio(int sg_num) { struct bio *bio; /* @@ -1098,8 +1040,8 @@ static inline struct bio *pscsi_get_bio(struct pscsi_dev_virt *pdv, int sg_num) * in block/blk-core.c:blk_make_request() */ bio = bio_kmalloc(GFP_KERNEL, sg_num); - if (!(bio)) { - printk(KERN_ERR "PSCSI: bio_kmalloc() failed\n"); + if (!bio) { + pr_err("PSCSI: bio_kmalloc() failed\n"); return NULL; } bio->bi_end_io = pscsi_bi_endio; @@ -1107,13 +1049,7 @@ static inline struct bio *pscsi_get_bio(struct pscsi_dev_virt *pdv, int sg_num) return bio; } -#if 0 -#define DEBUG_PSCSI(x...) printk(x) -#else -#define DEBUG_PSCSI(x...) -#endif - -static int __pscsi_map_task_SG( +static int __pscsi_map_SG( struct se_task *task, struct scatterlist *task_sg, u32 task_sg_num, @@ -1134,7 +1070,7 @@ static int __pscsi_map_task_SG( return 0; /* * For SCF_SCSI_DATA_SG_IO_CDB, Use fs/bio.c:bio_add_page() to setup - * the bio_vec maplist from TC< struct se_mem -> task->task_sg -> + * the bio_vec maplist from task->task_sg -> * struct scatterlist memory. The struct se_task->task_sg[] currently needs * to be attached to struct bios for submission to Linux/SCSI using * struct request to struct scsi_device->request_queue. @@ -1143,34 +1079,34 @@ static int __pscsi_map_task_SG( * is ported to upstream SCSI passthrough functionality that accepts * struct scatterlist->page_link or struct page as a paraemeter. */ - DEBUG_PSCSI("PSCSI: nr_pages: %d\n", nr_pages); + pr_debug("PSCSI: nr_pages: %d\n", nr_pages); for_each_sg(task_sg, sg, task_sg_num, i) { page = sg_page(sg); off = sg->offset; len = sg->length; - DEBUG_PSCSI("PSCSI: i: %d page: %p len: %d off: %d\n", i, + pr_debug("PSCSI: i: %d page: %p len: %d off: %d\n", i, page, len, off); while (len > 0 && data_len > 0) { bytes = min_t(unsigned int, len, PAGE_SIZE - off); bytes = min(bytes, data_len); - if (!(bio)) { + if (!bio) { nr_vecs = min_t(int, BIO_MAX_PAGES, nr_pages); nr_pages -= nr_vecs; /* * Calls bio_kmalloc() and sets bio->bi_end_io() */ - bio = pscsi_get_bio(pdv, nr_vecs); - if (!(bio)) + bio = pscsi_get_bio(nr_vecs); + if (!bio) goto fail; if (rw) bio->bi_rw |= REQ_WRITE; - DEBUG_PSCSI("PSCSI: Allocated bio: %p," + pr_debug("PSCSI: Allocated bio: %p," " dir: %s nr_vecs: %d\n", bio, (rw) ? "rw" : "r", nr_vecs); /* @@ -1185,7 +1121,7 @@ static int __pscsi_map_task_SG( tbio = tbio->bi_next = bio; } - DEBUG_PSCSI("PSCSI: Calling bio_add_pc_page() i: %d" + pr_debug("PSCSI: Calling bio_add_pc_page() i: %d" " bio: %p page: %p len: %d off: %d\n", i, bio, page, len, off); @@ -1194,11 +1130,11 @@ static int __pscsi_map_task_SG( if (rc != bytes) goto fail; - DEBUG_PSCSI("PSCSI: bio->bi_vcnt: %d nr_vecs: %d\n", + pr_debug("PSCSI: bio->bi_vcnt: %d nr_vecs: %d\n", bio->bi_vcnt, nr_vecs); if (bio->bi_vcnt > nr_vecs) { - DEBUG_PSCSI("PSCSI: Reached bio->bi_vcnt max:" + pr_debug("PSCSI: Reached bio->bi_vcnt max:" " %d i: %d bio: %p, allocating another" " bio\n", bio->bi_vcnt, i, bio); /* @@ -1220,15 +1156,15 @@ static int __pscsi_map_task_SG( * Setup the primary pt->pscsi_req used for non BIDI and BIDI-COMMAND * primary SCSI WRITE poayload mapped for struct se_task->task_sg[] */ - if (!(bidi_read)) { + if (!bidi_read) { /* * Starting with v2.6.31, call blk_make_request() passing in *hbio to * allocate the pSCSI task a struct request. */ pt->pscsi_req = blk_make_request(pdv->pdv_sd->request_queue, hbio, GFP_KERNEL); - if (!(pt->pscsi_req)) { - printk(KERN_ERR "pSCSI: blk_make_request() failed\n"); + if (!pt->pscsi_req) { + pr_err("pSCSI: blk_make_request() failed\n"); goto fail; } /* @@ -1237,7 +1173,7 @@ static int __pscsi_map_task_SG( */ pscsi_blk_init_request(task, pt, pt->pscsi_req, 0); - return task->task_sg_num; + return task->task_sg_nents; } /* * Setup the secondary pt->pscsi_req->next_rq used for the extra BIDI-COMMAND @@ -1245,13 +1181,13 @@ static int __pscsi_map_task_SG( */ pt->pscsi_req->next_rq = blk_make_request(pdv->pdv_sd->request_queue, hbio, GFP_KERNEL); - if (!(pt->pscsi_req->next_rq)) { - printk(KERN_ERR "pSCSI: blk_make_request() failed for BIDI\n"); + if (!pt->pscsi_req->next_rq) { + pr_err("pSCSI: blk_make_request() failed for BIDI\n"); goto fail; } pscsi_blk_init_request(task, pt, pt->pscsi_req->next_rq, 1); - return task->task_sg_num; + return task->task_sg_nents; fail: while (hbio) { bio = hbio; @@ -1262,7 +1198,10 @@ fail: return ret; } -static int pscsi_map_task_SG(struct se_task *task) +/* + * pSCSI maps both ->map_control_SG() and ->map_data_SG() to a single call. + */ +static int pscsi_map_SG(struct se_task *task) { int ret; @@ -1270,14 +1209,14 @@ static int pscsi_map_task_SG(struct se_task *task) * Setup the main struct request for the task->task_sg[] payload */ - ret = __pscsi_map_task_SG(task, task->task_sg, task->task_sg_num, 0); + ret = __pscsi_map_SG(task, task->task_sg, task->task_sg_nents, 0); if (ret >= 0 && task->task_sg_bidi) { /* * If present, set up the extra BIDI-COMMAND SCSI READ * struct request and payload. */ - ret = __pscsi_map_task_SG(task, task->task_sg_bidi, - task->task_sg_num, 1); + ret = __pscsi_map_SG(task, task->task_sg_bidi, + task->task_sg_nents, 1); } if (ret < 0) @@ -1285,33 +1224,6 @@ static int pscsi_map_task_SG(struct se_task *task) return 0; } -/* pscsi_map_task_non_SG(): - * - * - */ -static int pscsi_map_task_non_SG(struct se_task *task) -{ - struct se_cmd *cmd = TASK_CMD(task); - struct pscsi_plugin_task *pt = PSCSI_TASK(task); - struct pscsi_dev_virt *pdv = task->se_dev->dev_ptr; - int ret = 0; - - if (pscsi_blk_get_request(task) < 0) - return PYX_TRANSPORT_LU_COMM_FAILURE; - - if (!task->task_size) - return 0; - - ret = blk_rq_map_kern(pdv->pdv_sd->request_queue, - pt->pscsi_req, T_TASK(cmd)->t_task_buf, - task->task_size, GFP_KERNEL); - if (ret < 0) { - printk(KERN_ERR "PSCSI: blk_rq_map_kern() failed: %d\n", ret); - return PYX_TRANSPORT_LU_COMM_FAILURE; - } - return 0; -} - static int pscsi_CDB_none(struct se_task *task) { return pscsi_blk_get_request(task); @@ -1383,9 +1295,9 @@ static inline void pscsi_process_SAM_status( struct pscsi_plugin_task *pt) { task->task_scsi_status = status_byte(pt->pscsi_result); - if ((task->task_scsi_status)) { + if (task->task_scsi_status) { task->task_scsi_status <<= 1; - printk(KERN_INFO "PSCSI Status Byte exception at task: %p CDB:" + pr_debug("PSCSI Status Byte exception at task: %p CDB:" " 0x%02x Result: 0x%08x\n", task, pt->pscsi_cdb[0], pt->pscsi_result); } @@ -1395,18 +1307,16 @@ static inline void pscsi_process_SAM_status( transport_complete_task(task, (!task->task_scsi_status)); break; default: - printk(KERN_INFO "PSCSI Host Byte exception at task: %p CDB:" + pr_debug("PSCSI Host Byte exception at task: %p CDB:" " 0x%02x Result: 0x%08x\n", task, pt->pscsi_cdb[0], pt->pscsi_result); task->task_scsi_status = SAM_STAT_CHECK_CONDITION; task->task_error_status = PYX_TRANSPORT_UNKNOWN_SAM_OPCODE; - TASK_CMD(task)->transport_error_status = + task->task_se_cmd->transport_error_status = PYX_TRANSPORT_UNKNOWN_SAM_OPCODE; transport_complete_task(task, 0); break; } - - return; } static void pscsi_req_done(struct request *req, int uptodate) @@ -1433,8 +1343,8 @@ static struct se_subsystem_api pscsi_template = { .owner = THIS_MODULE, .transport_type = TRANSPORT_PLUGIN_PHBA_PDEV, .cdb_none = pscsi_CDB_none, - .map_task_non_SG = pscsi_map_task_non_SG, - .map_task_SG = pscsi_map_task_SG, + .map_control_SG = pscsi_map_SG, + .map_data_SG = pscsi_map_SG, .attach_hba = pscsi_attach_hba, .detach_hba = pscsi_detach_hba, .pmode_enable_hba = pscsi_pmode_enable_hba, |