diff options
| -rw-r--r-- | drivers/ieee1394/sbp2.c | 1158 | ||||
| -rw-r--r-- | drivers/ieee1394/sbp2.h | 15 |
2 files changed, 575 insertions, 598 deletions
diff --git a/drivers/ieee1394/sbp2.c b/drivers/ieee1394/sbp2.c index 34280c7..a7fb588 100644 --- a/drivers/ieee1394/sbp2.c +++ b/drivers/ieee1394/sbp2.c @@ -189,24 +189,23 @@ MODULE_PARM_DESC(workarounds, "Work around device bugs (default = 0" /* * Globals */ -static void sbp2scsi_complete_all_commands(struct scsi_id_instance_data *, u32); -static void sbp2scsi_complete_command(struct scsi_id_instance_data *, u32, - struct scsi_cmnd *, +static void sbp2scsi_complete_all_commands(struct sbp2_lu *, u32); +static void sbp2scsi_complete_command(struct sbp2_lu *, u32, struct scsi_cmnd *, void (*)(struct scsi_cmnd *)); -static struct scsi_id_instance_data *sbp2_alloc_device(struct unit_directory *); -static int sbp2_start_device(struct scsi_id_instance_data *); -static void sbp2_remove_device(struct scsi_id_instance_data *); -static int sbp2_login_device(struct scsi_id_instance_data *); -static int sbp2_reconnect_device(struct scsi_id_instance_data *); -static int sbp2_logout_device(struct scsi_id_instance_data *); +static struct sbp2_lu *sbp2_alloc_device(struct unit_directory *); +static int sbp2_start_device(struct sbp2_lu *); +static void sbp2_remove_device(struct sbp2_lu *); +static int sbp2_login_device(struct sbp2_lu *); +static int sbp2_reconnect_device(struct sbp2_lu *); +static int sbp2_logout_device(struct sbp2_lu *); static void sbp2_host_reset(struct hpsb_host *); static int sbp2_handle_status_write(struct hpsb_host *, int, int, quadlet_t *, u64, size_t, u16); -static int sbp2_agent_reset(struct scsi_id_instance_data *, int); -static void sbp2_parse_unit_directory(struct scsi_id_instance_data *, +static int sbp2_agent_reset(struct sbp2_lu *, int); +static void sbp2_parse_unit_directory(struct sbp2_lu *, struct unit_directory *); -static int sbp2_set_busy_timeout(struct scsi_id_instance_data *); -static int sbp2_max_speed_and_size(struct scsi_id_instance_data *); +static int sbp2_set_busy_timeout(struct sbp2_lu *); +static int sbp2_max_speed_and_size(struct sbp2_lu *); static const u8 sbp2_speedto_max_payload[] = { 0x7, 0x8, 0x9, 0xA, 0xB, 0xC }; @@ -369,8 +368,6 @@ static inline void sbp2util_be32_to_cpu_buffer(void *buffer, int length) for (length = (length >> 2); length--; ) temp[length] = be32_to_cpu(temp[length]); - - return; } /* @@ -382,8 +379,6 @@ static inline void sbp2util_cpu_to_be32_buffer(void *buffer, int length) for (length = (length >> 2); length--; ) temp[length] = cpu_to_be32(temp[length]); - - return; } #else /* BIG_ENDIAN */ /* Why waste the cpu cycles? */ @@ -397,18 +392,17 @@ static DECLARE_WAIT_QUEUE_HEAD(sbp2_access_wq); * Waits for completion of an SBP-2 access request. * Returns nonzero if timed out or prematurely interrupted. */ -static int sbp2util_access_timeout(struct scsi_id_instance_data *scsi_id, - int timeout) +static int sbp2util_access_timeout(struct sbp2_lu *lu, int timeout) { long leftover; leftover = wait_event_interruptible_timeout( - sbp2_access_wq, scsi_id->access_complete, timeout); - scsi_id->access_complete = 0; + sbp2_access_wq, lu->access_complete, timeout); + lu->access_complete = 0; return leftover <= 0; } -static void sbp2_free_packet(struct hpsb_packet *packet) +static void sbp2_free_packet(void *packet) { hpsb_free_tlabel(packet); hpsb_free_packet(packet); @@ -419,121 +413,107 @@ static void sbp2_free_packet(struct hpsb_packet *packet) * subaction and returns immediately. Can be used from atomic context. */ static int sbp2util_node_write_no_wait(struct node_entry *ne, u64 addr, - quadlet_t *buffer, size_t length) + quadlet_t *buf, size_t len) { struct hpsb_packet *packet; - packet = hpsb_make_writepacket(ne->host, ne->nodeid, - addr, buffer, length); + packet = hpsb_make_writepacket(ne->host, ne->nodeid, addr, buf, len); if (!packet) return -ENOMEM; - hpsb_set_packet_complete_task(packet, - (void (*)(void *))sbp2_free_packet, - packet); - + hpsb_set_packet_complete_task(packet, sbp2_free_packet, packet); hpsb_node_fill_packet(ne, packet); - if (hpsb_send_packet(packet) < 0) { sbp2_free_packet(packet); return -EIO; } - return 0; } -static void sbp2util_notify_fetch_agent(struct scsi_id_instance_data *scsi_id, - u64 offset, quadlet_t *data, size_t len) +static void sbp2util_notify_fetch_agent(struct sbp2_lu *lu, u64 offset, + quadlet_t *data, size_t len) { - /* - * There is a small window after a bus reset within which the node - * entry's generation is current but the reconnect wasn't completed. - */ - if (unlikely(atomic_read(&scsi_id->state) == SBP2LU_STATE_IN_RESET)) + /* There is a small window after a bus reset within which the node + * entry's generation is current but the reconnect wasn't completed. */ + if (unlikely(atomic_read(&lu->state) == SBP2LU_STATE_IN_RESET)) return; - if (hpsb_node_write(scsi_id->ne, - scsi_id->command_block_agent_addr + offset, + if (hpsb_node_write(lu->ne, lu->command_block_agent_addr + offset, data, len)) SBP2_ERR("sbp2util_notify_fetch_agent failed."); - /* - * Now accept new SCSI commands, unless a bus reset happended during - * hpsb_node_write. - */ - if (likely(atomic_read(&scsi_id->state) != SBP2LU_STATE_IN_RESET)) - scsi_unblock_requests(scsi_id->scsi_host); + + /* Now accept new SCSI commands, unless a bus reset happended during + * hpsb_node_write. */ + if (likely(atomic_read(&lu->state) != SBP2LU_STATE_IN_RESET)) + scsi_unblock_requests(lu->shost); } static void sbp2util_write_orb_pointer(struct work_struct *work) { quadlet_t data[2]; - data[0] = ORB_SET_NODE_ID( - (container_of(work, struct scsi_id_instance_data, protocol_work))->hi->host->node_id); - data[1] = (container_of(work, struct scsi_id_instance_data, protocol_work))->last_orb_dma; + data[0] = ORB_SET_NODE_ID((container_of(work, struct sbp2_lu, protocol_work))->hi->host->node_id); + data[1] = (container_of(work, struct sbp2_lu, protocol_work))->last_orb_dma; sbp2util_cpu_to_be32_buffer(data, 8); - sbp2util_notify_fetch_agent(container_of(work, struct scsi_id_instance_data, protocol_work), SBP2_ORB_POINTER_OFFSET, data, 8); + sbp2util_notify_fetch_agent(container_of(work, struct sbp2_lu, protocol_work), SBP2_ORB_POINTER_OFFSET, data, 8); } static void sbp2util_write_doorbell(struct work_struct *work) { - sbp2util_notify_fetch_agent(container_of(work, struct scsi_id_instance_data, protocol_work), SBP2_DOORBELL_OFFSET, NULL, 4); + sbp2util_notify_fetch_agent(container_of(work, struct sbp2_lu, protocol_work), SBP2_DOORBELL_OFFSET, NULL, 4); } -static int sbp2util_create_command_orb_pool(struct scsi_id_instance_data *scsi_id) +static int sbp2util_create_command_orb_pool(struct sbp2_lu *lu) { - struct sbp2_fwhost_info *hi = scsi_id->hi; + struct sbp2_fwhost_info *hi = lu->hi; int i; unsigned long flags, orbs; - struct sbp2_command_info *command; + struct sbp2_command_info *cmd; orbs = sbp2_serialize_io ? 2 : SBP2_MAX_CMDS; - spin_lock_irqsave(&scsi_id->cmd_orb_lock, flags); + spin_lock_irqsave(&lu->cmd_orb_lock, flags); for (i = 0; i < orbs; i++) { - command = kzalloc(sizeof(*command), GFP_ATOMIC); - if (!command) { - spin_unlock_irqrestore(&scsi_id->cmd_orb_lock, - flags); + cmd = kzalloc(sizeof(*cmd), GFP_ATOMIC); + if (!cmd) { + spin_unlock_irqrestore(&lu->cmd_orb_lock, flags); return -ENOMEM; } - command->command_orb_dma = - pci_map_single(hi->host->pdev, &command->command_orb, - sizeof(struct sbp2_command_orb), - PCI_DMA_TODEVICE); - command->sge_dma = - pci_map_single(hi->host->pdev, - &command->scatter_gather_element, - sizeof(command->scatter_gather_element), - PCI_DMA_BIDIRECTIONAL); - INIT_LIST_HEAD(&command->list); - list_add_tail(&command->list, &scsi_id->cmd_orb_completed); + cmd->command_orb_dma = pci_map_single(hi->host->pdev, + &cmd->command_orb, + sizeof(struct sbp2_command_orb), + PCI_DMA_TODEVICE); + cmd->sge_dma = pci_map_single(hi->host->pdev, + &cmd->scatter_gather_element, + sizeof(cmd->scatter_gather_element), + PCI_DMA_BIDIRECTIONAL); + INIT_LIST_HEAD(&cmd->list); + list_add_tail(&cmd->list, &lu->cmd_orb_completed); } - spin_unlock_irqrestore(&scsi_id->cmd_orb_lock, flags); + spin_unlock_irqrestore(&lu->cmd_orb_lock, flags); return 0; } -static void sbp2util_remove_command_orb_pool(struct scsi_id_instance_data *scsi_id) +static void sbp2util_remove_command_orb_pool(struct sbp2_lu *lu) { - struct hpsb_host *host = scsi_id->hi->host; + struct hpsb_host *host = lu->hi->host; struct list_head *lh, *next; - struct sbp2_command_info *command; + struct sbp2_command_info *cmd; unsigned long flags; - spin_lock_irqsave(&scsi_id->cmd_orb_lock, flags); - if (!list_empty(&scsi_id->cmd_orb_completed)) { - list_for_each_safe(lh, next, &scsi_id->cmd_orb_completed) { - command = list_entry(lh, struct sbp2_command_info, list); - pci_unmap_single(host->pdev, command->command_orb_dma, + spin_lock_irqsave(&lu->cmd_orb_lock, flags); + if (!list_empty(&lu->cmd_orb_completed)) + list_for_each_safe(lh, next, &lu->cmd_orb_completed) { + cmd = list_entry(lh, struct sbp2_command_info, list); + pci_unmap_single(host->pdev, cmd->command_orb_dma, sizeof(struct sbp2_command_orb), PCI_DMA_TODEVICE); - pci_unmap_single(host->pdev, command->sge_dma, - sizeof(command->scatter_gather_element), + pci_unmap_single(host->pdev, cmd->sge_dma, + sizeof(cmd->scatter_gather_element), PCI_DMA_BIDIRECTIONAL); - kfree(command); + kfree(cmd); } - } - spin_unlock_irqrestore(&scsi_id->cmd_orb_lock, flags); + spin_unlock_irqrestore(&lu->cmd_orb_lock, flags); return; } @@ -542,116 +522,114 @@ static void sbp2util_remove_command_orb_pool(struct scsi_id_instance_data *scsi_ * Only looks at the in-use list. */ static struct sbp2_command_info *sbp2util_find_command_for_orb( - struct scsi_id_instance_data *scsi_id, dma_addr_t orb) + struct sbp2_lu *lu, dma_addr_t orb) { - struct sbp2_command_info *command; + struct sbp2_command_info *cmd; unsigned long flags; - spin_lock_irqsave(&scsi_id->cmd_orb_lock, flags); - if (!list_empty(&scsi_id->cmd_orb_inuse)) { - list_for_each_entry(command, &scsi_id->cmd_orb_inuse, list) { - if (command->command_orb_dma == orb) { - spin_unlock_irqrestore(&scsi_id->cmd_orb_lock, flags); - return command; + spin_lock_irqsave(&lu->cmd_orb_lock, flags); + if (!list_empty(&lu->cmd_orb_inuse)) + list_for_each_entry(cmd, &lu->cmd_orb_inuse, list) + if (cmd->command_orb_dma == orb) { + spin_unlock_irqrestore( + &lu->cmd_orb_lock, flags); + return cmd; } - } - } - spin_unlock_irqrestore(&scsi_id->cmd_orb_lock, flags); + spin_unlock_irqrestore(&lu->cmd_orb_lock, flags); return NULL; } /* * Finds the sbp2_command for a given outstanding SCpnt. * Only looks at the in-use list. - * Must be called with scsi_id->cmd_orb_lock held. + * Must be called with lu->cmd_orb_lock held. */ static struct sbp2_command_info *sbp2util_find_command_for_SCpnt( - struct scsi_id_instance_data *scsi_id, void *SCpnt) + struct sbp2_lu *lu, void *SCpnt) { - struct sbp2_command_info *command; + struct sbp2_command_info *cmd; - if (!list_empty(&scsi_id->cmd_orb_inuse)) - list_for_each_entry(command, &scsi_id->cmd_orb_inuse, list) - if (command->Current_SCpnt == SCpnt) - return command; + if (!list_empty(&lu->cmd_orb_inuse)) + list_for_each_entry(cmd, &lu->cmd_orb_inuse, list) + if (cmd->Current_SCpnt == SCpnt) + return cmd; return NULL; } static struct sbp2_command_info *sbp2util_allocate_command_orb( - struct scsi_id_instance_data *scsi_id, - struct scsi_cmnd *Current_SCpnt, - void (*Current_done)(struct scsi_cmnd *)) + struct sbp2_lu *lu, + struct scsi_cmnd *Current_SCpnt, + void (*Current_done)(struct scsi_cmnd *)) { struct list_head *lh; - struct sbp2_command_info *command = NULL; + struct sbp2_command_info *cmd = NULL; unsigned long flags; - spin_lock_irqsave(&scsi_id->cmd_orb_lock, flags); - if (!list_empty(&scsi_id->cmd_orb_completed)) { - lh = scsi_id->cmd_orb_completed.next; + spin_lock_irqsave(&lu->cmd_orb_lock, flags); + if (!list_empty(&lu->cmd_orb_completed)) { + lh = lu->cmd_orb_completed.next; list_del(lh); - command = list_entry(lh, struct sbp2_command_info, list); - command->Current_done = Current_done; - command->Current_SCpnt = Current_SCpnt; - list_add_tail(&command->list, &scsi_id->cmd_orb_inuse); - } else { + cmd = list_entry(lh, struct sbp2_command_info, list); + cmd->Current_done = Current_done; + cmd->Current_SCpnt = Current_SCpnt; + list_add_tail(&cmd->list, &lu->cmd_orb_inuse); + } else SBP2_ERR("%s: no orbs available", __FUNCTION__); - } - spin_unlock_irqrestore(&scsi_id->cmd_orb_lock, flags); - return command; + spin_unlock_irqrestore(&lu->cmd_orb_lock, flags); + return cmd; } -static void sbp2util_free_command_dma(struct sbp2_command_info *command) +static void sbp2util_free_command_dma(struct sbp2_command_info *cmd) { - struct scsi_id_instance_data *scsi_id = - (struct scsi_id_instance_data *)command->Current_SCpnt->device->host->hostdata[0]; + struct sbp2_lu *lu = (struct sbp2_lu *) + cmd->Current_SCpnt->device->host->hostdata[0]; struct hpsb_host *host; - if (!scsi_id) { - SBP2_ERR("%s: scsi_id == NULL", __FUNCTION__); + if (!lu) { + SBP2_ERR("%s: lu == NULL", __FUNCTION__); return; } - host = scsi_id->ud->ne->host; + host = lu->ud->ne->host; - if (command->cmd_dma) { - if (command->dma_type == CMD_DMA_SINGLE) - pci_unmap_single(host->pdev, command->cmd_dma, - command->dma_size, command->dma_dir); - else if (command->dma_type == CMD_DMA_PAGE) - pci_unmap_page(host->pdev, command->cmd_dma, - command->dma_size, command->dma_dir); + if (cmd->cmd_dma) { + if (cmd->dma_type == CMD_DMA_SINGLE) + pci_unmap_single(host->pdev, cmd->cmd_dma, + cmd->dma_size, cmd->dma_dir); + else if (cmd->dma_type == CMD_DMA_PAGE) + pci_unmap_page(host->pdev, cmd->cmd_dma, + cmd->dma_size, cmd->dma_dir); /* XXX: Check for CMD_DMA_NONE bug */ - command->dma_type = CMD_DMA_NONE; - command->cmd_dma = 0; + cmd->dma_type = CMD_DMA_NONE; + cmd->cmd_dma = 0; } - if (command->sge_buffer) { - pci_unmap_sg(host->pdev, command->sge_buffer, - command->dma_size, command->dma_dir); - command->sge_buffer = NULL; + if (cmd->sge_buffer) { + pci_unmap_sg(host->pdev, cmd->sge_buffer, + cmd->dma_size, cmd->dma_dir); + cmd->sge_buffer = NULL; } } /* * This function moves a command to the completed orb list. - * Must be called with scsi_id->cmd_orb_lock held. + * Must be called with lu->cmd_orb_lock held. */ static void sbp2util_mark_command_completed( - struct scsi_id_instance_data *scsi_id, - struct sbp2_command_info *command) + struct sbp2_lu *lu, + struct sbp2_command_info *cmd) { - list_del(&command->list); - sbp2util_free_command_dma(command); - list_add_tail(&command->list, &scsi_id->cmd_orb_completed); + list_del(&cmd->list); + sbp2util_free_command_dma(cmd); + list_add_tail(&cmd->list, &lu->cmd_orb_completed); } /* - * Is scsi_id valid? Is the 1394 node still present? + * Is lu valid? Is the 1394 node still present? */ -static inline int sbp2util_node_is_available(struct scsi_id_instance_data *scsi_id) +static inline int sbp2util_node_is_available(struct sbp2_lu *lu) { - return scsi_id && scsi_id->ne && !scsi_id->ne->in_limbo; + return lu && lu->ne && !lu->ne->in_limbo; } /********************************************* @@ -661,7 +639,7 @@ static inline int sbp2util_node_is_available(struct scsi_id_instance_data *scsi_ static int sbp2_probe(struct device *dev) { struct unit_directory *ud; - struct scsi_id_instance_data *scsi_id; + struct sbp2_lu *lu; ud = container_of(dev, struct unit_directory, device); @@ -670,60 +648,58 @@ static int sbp2_probe(struct device *dev) if (ud->flags & UNIT_DIRECTORY_HAS_LUN_DIRECTORY) return -ENODEV; - scsi_id = sbp2_alloc_device(ud); - - if (!scsi_id) + lu = sbp2_alloc_device(ud); + if (!lu) return -ENOMEM; - sbp2_parse_unit_directory(scsi_id, ud); - - return sbp2_start_device(scsi_id); + sbp2_parse_unit_directory(lu, ud); + return sbp2_start_device(lu); } static int sbp2_remove(struct device *dev) { struct unit_directory *ud; - struct scsi_id_instance_data *scsi_id; + struct sbp2_lu *lu; struct scsi_device *sdev; ud = container_of(dev, struct unit_directory, device); - scsi_id = ud->device.driver_data; - if (!scsi_id) + lu = ud->device.driver_data; + if (!lu) return 0; - if (scsi_id->scsi_host) { + if (lu->shost) { /* Get rid of enqueued commands if there is no chance to * send them. */ - if (!sbp2util_node_is_available(scsi_id)) - sbp2scsi_complete_all_commands(scsi_id, DID_NO_CONNECT); + if (!sbp2util_node_is_available(lu)) + sbp2scsi_complete_all_commands(lu, DID_NO_CONNECT); /* scsi_remove_device() may trigger shutdown functions of SCSI * highlevel drivers which would deadlock if blocked. */ - atomic_set(&scsi_id->state, SBP2LU_STATE_IN_SHUTDOWN); - scsi_unblock_requests(scsi_id->scsi_host); + atomic_set(&lu->state, SBP2LU_STATE_IN_SHUTDOWN); + scsi_unblock_requests(lu->shost); } - sdev = scsi_id->sdev; + sdev = lu->sdev; if (sdev) { - scsi_id->sdev = NULL; + lu->sdev = NULL; scsi_remove_device(sdev); } - sbp2_logout_device(scsi_id); - sbp2_remove_device(scsi_id); + sbp2_logout_device(lu); + sbp2_remove_device(lu); return 0; } static int sbp2_update(struct unit_directory *ud) { - struct scsi_id_instance_data *scsi_id = ud->device.driver_data; + struct sbp2_lu *lu = ud->device.driver_data; - if (sbp2_reconnect_device(scsi_id)) { + if (sbp2_reconnect_device(lu)) { /* Reconnect has failed. Perhaps we didn't reconnect fast * enough. Try a regular login, but first log out just in * case of any weirdness. */ - sbp2_logout_device(scsi_id); + sbp2_logout_device(lu); - if (sbp2_login_device(scsi_id)) { + if (sbp2_login_device(lu)) { /* Login failed too, just fail, and the backend * will call our sbp2_remove for us */ SBP2_ERR("Failed to reconnect to sbp2 device!"); @@ -731,58 +707,59 @@ static int sbp2_update(struct unit_directory *ud) } } - sbp2_set_busy_timeout(scsi_id); - sbp2_agent_reset(scsi_id, 1); - sbp2_max_speed_and_size(scsi_id); + sbp2_set_busy_timeout(lu); + sbp2_agent_reset(lu, 1); + sbp2_max_speed_and_size(lu); /* Complete any pending commands with busy (so they get retried) * and remove them from our queue. */ - sbp2scsi_complete_all_commands(scsi_id, DID_BUS_BUSY); + sbp2scsi_complete_all_commands(lu, DID_BUS_BUSY); /* Accept new commands unless there was another bus reset in the * meantime. */ - if (hpsb_node_entry_valid(scsi_id->ne)) { - atomic_set(&scsi_id->state, SBP2LU_STATE_RUNNING); - scsi_unblock_requests(scsi_id->scsi_host); + if (hpsb_node_entry_valid(lu->ne)) { + atomic_set(&lu->state, SBP2LU_STATE_RUNNING); + scsi_unblock_requests(lu->shost); } return 0; } -static struct scsi_id_instance_data *sbp2_alloc_device(struct unit_directory *ud) +static struct sbp2_lu *sbp2_alloc_device(struct unit_directory *ud) { struct sbp2_fwhost_info *hi; - struct Scsi_Host *scsi_host = NULL; - struct scsi_id_instance_data *scsi_id = NULL; + struct Scsi_Host *shost = NULL; + struct sbp2_lu *lu = NULL; - scsi_id = kzalloc(sizeof(*scsi_id), GFP_KERNEL); - if (!scsi_id) { - SBP2_ERR("failed to create scsi_id"); + lu = kzalloc(sizeof(*lu), GFP_KERNEL); + if (!lu) { + SBP2_ERR("failed to create lu"); goto failed_alloc; } - scsi_id->ne = ud->ne; - scsi_id->ud = ud; - scsi_id->speed_code = IEEE1394_SPEED_100; - scsi_id->max_payload_size = sbp2_speedto_max_payload[IEEE1394_SPEED_100]; - scsi_id->status_fifo_addr = CSR1212_INVALID_ADDR_SPACE; - INIT_LIST_HEAD(&scsi_id->cmd_orb_inuse); - INIT_LIST_HEAD(&scsi_id->cmd_orb_completed); - INIT_LIST_HEAD(&scsi_id->scsi_list); - spin_lock_init(&scsi_id->cmd_orb_lock); - atomic_set(&scsi_id->state, SBP2LU_STATE_RUNNING); - INIT_WORK(&scsi_id->protocol_work, NULL); + lu->ne = ud->ne; + lu->ud = ud; + lu->speed_code = IEEE1394_SPEED_100; + lu->max_payload_size = sbp2_speedto_max_payload[IEEE1394_SPEED_100]; + lu->status_fifo_addr = CSR1212_INVALID_ADDR_SPACE; + INIT_LIST_HEAD(&lu->cmd_orb_inuse); + INIT_LIST_HEAD(&lu->cmd_orb_completed); + INIT_LIST_HEAD(&lu->lu_list); + spin_lock_init(&lu->cmd_orb_lock); + atomic_set(&lu->state, SBP2LU_STATE_RUNNING); + INIT_WORK(&lu->protocol_work, NULL); - ud->device.driver_data = scsi_id; + ud->device.driver_data = lu; hi = hpsb_get_hostinfo(&sbp2_highlevel, ud->ne->host); if (!hi) { - hi = hpsb_create_hostinfo(&sbp2_highlevel, ud->ne->host, sizeof(*hi)); + hi = hpsb_create_hostinfo(&sbp2_highlevel, ud->ne->host, + sizeof(*hi)); if (!hi) { SBP2_ERR("failed to allocate hostinfo"); goto failed_alloc; } hi->host = ud->ne->host; - INIT_LIST_HEAD(&hi->scsi_ids); + INIT_LIST_HEAD(&hi->logical_units); #ifdef CONFIG_IEEE1394_SBP2_PHYS_DMA /* Handle data movement if physical dma is not @@ -802,9 +779,9 @@ static struct scsi_id_instance_data *sbp2_alloc_device(struct unit_directory *ud goto failed_alloc; } - scsi_id->hi = hi; + lu->hi = hi; - list_add_tail(&scsi_id->scsi_list, &hi->scsi_ids); + list_add_tail(&lu->lu_list, &hi->logical_units); /* Register the status FIFO address range. We could use the same FIFO * for targets at different nodes. However we need different FIFOs per @@ -814,197 +791,190 @@ static struct scsi_id_instance_data *sbp2_alloc_device(struct unit_directory *ud * then be performed as unified transactions. This slightly reduces * bandwidth usage, and some Prolific based devices seem to require it. */ - scsi_id->status_fifo_addr = hpsb_allocate_and_register_addrspace( + lu->status_fifo_addr = hpsb_allocate_and_register_addrspace( &sbp2_highlevel, ud->ne->host, &sbp2_ops, sizeof(struct sbp2_status_block), sizeof(quadlet_t), ud->ne->host->low_addr_space, CSR1212_ALL_SPACE_END); - if (scsi_id->status_fifo_addr == CSR1212_INVALID_ADDR_SPACE) { + if (lu->status_fifo_addr == CSR1212_INVALID_ADDR_SPACE) { SBP2_ERR("failed to allocate status FIFO address range"); goto failed_alloc; } - scsi_host = scsi_host_alloc(&sbp2_shost_template, - sizeof(unsigned long)); - if (!scsi_host) { + shost = scsi_host_alloc(&sbp2_shost_template, sizeof(unsigned long)); + if (!shost) { SBP2_ERR("failed to register scsi host"); goto failed_alloc; } - scsi_host->hostdata[0] = (unsigned long)scsi_id; + shost->hostdata[0] = (unsigned long)lu; - if (!scsi_add_host(scsi_host, &ud->device)) { - scsi_id->scsi_host = scsi_host; - return scsi_id; + if (!scsi_add_host(shost, &ud->device)) { + lu->shost = shost; + return lu; } SBP2_ERR("failed to add scsi host"); - scsi_host_put(scsi_host); + scsi_host_put(shost); failed_alloc: - sbp2_remove_device(scsi_id); + sbp2_remove_device(lu); return NULL; } static void sbp2_host_reset(struct hpsb_host *host) { struct sbp2_fwhost_info *hi; - struct scsi_id_instance_data *scsi_id; + struct sbp2_lu *lu; hi = hpsb_get_hostinfo(&sbp2_highlevel, host); if (!hi) return; - list_for_each_entry(scsi_id, &hi->scsi_ids, scsi_list) - if (likely(atomic_read(&scsi_id->state) != + list_for_each_entry(lu, &hi->logical_units, lu_list) + if (likely(atomic_read(&lu->state) != SBP2LU_STATE_IN_SHUTDOWN)) { - atomic_set(&scsi_id->state, SBP2LU_STATE_IN_RESET); - scsi_block_requests(scsi_id->scsi_host); + atomic_set(&lu->state, SBP2LU_STATE_IN_RESET); + scsi_block_requests(lu->shost); } } -static int sbp2_start_device(struct scsi_id_instance_data *scsi_id) +static int sbp2_start_device(struct sbp2_lu *lu) { - struct sbp2_fwhost_info *hi = scsi_id->hi; + struct sbp2_fwhost_info *hi = lu->hi; int error; - scsi_id->login_response = - pci_alloc_consistent(hi->host->pdev, + lu->login_response = pci_alloc_consistent(hi->host->pdev, sizeof(struct sbp2_login_response), - &scsi_id->login_response_dma); - if (!scsi_id->login_response) + &lu->login_response_dma); + if (!lu->login_response) goto alloc_fail; - scsi_id->query_logins_orb = - pci_alloc_consistent(hi->host->pdev, + lu->query_logins_orb = pci_alloc_consistent(hi->host->pdev, sizeof(struct sbp2_query_logins_orb), - &scsi_id->query_logins_orb_dma); - if (!scsi_id->query_logins_orb) + &lu->query_logins_orb_dma); + if (!lu->query_logins_orb) goto alloc_fail; - scsi_id->query_logins_response = - pci_alloc_consistent(hi->host->pdev, + lu->query_logins_response = pci_alloc_consistent(hi->host->pdev, sizeof(struct sbp2_query_logins_response), - &scsi_id->query_logins_response_dma); - if (!scsi_id->query_logins_response) + &lu->query_logins_response_dma); + if (!lu->query_logins_response) goto alloc_fail; - scsi_id->reconnect_orb = - pci_alloc_consistent(hi->host->pdev, + lu->reconnect_orb = pci_alloc_consistent(hi->host->pdev, sizeof(struct sbp2_reconnect_orb), - &scsi_id->reconnect_orb_dma); - if (!scsi_id->reconnect_orb) + &lu->reconnect_orb_dma); + if (!lu->reconnect_orb) goto alloc_fail; - scsi_id->logout_orb = - pci_alloc_consistent(hi->host->pdev, + lu->logout_orb = pci_alloc_consistent(hi->host->pdev, sizeof(struct sbp2_logout_orb), - &scsi_id->logout_orb_dma); - if (!scsi_id->logout_orb) + &lu->logout_orb_dma); + if (!lu->logout_orb) goto alloc_fail; - scsi_id->login_orb = - pci_alloc_consistent(hi->host->pdev, + lu->login_orb = pci_alloc_consistent(hi->host->pdev, sizeof(struct sbp2_login_orb), - &scsi_id->login_orb_dma); - if (!scsi_id->login_orb) + &lu->login_orb_dma); + if (!lu->login_orb) goto alloc_fail; - if (sbp2util_create_command_orb_pool(scsi_id)) { + if (sbp2util_create_command_orb_pool(lu)) { SBP2_ERR("sbp2util_create_command_orb_pool failed!"); - sbp2_remove_device(scsi_id); + sbp2_remove_device(lu); return -ENOMEM; } /* Wait a second before trying to log in. Previously logged in * initiators need a chance to reconnect. */ if (msleep_interruptible(1000)) { - sbp2_remove_device(scsi_id); + sbp2_remove_device(lu); return -EINTR; } - if (sbp2_login_device(scsi_id)) { - sbp2_remove_device(scsi_id); + if (sbp2_login_device(lu)) { + sbp2_remove_device(lu); return -EBUSY; } - sbp2_set_busy_timeout(scsi_id); - sbp2_agent_reset(scsi_id, 1); - sbp2_max_speed_and_size(scsi_id); + sbp2_set_busy_timeout(lu); + sbp2_agent_reset(lu, 1); + sbp2_max_speed_and_size(lu); - error = scsi_add_device(scsi_id->scsi_host, 0, scsi_id->ud->id, 0); + error = scsi_add_device(lu->shost, 0, lu->ud->id, 0); if (error) { SBP2_ERR("scsi_add_device failed"); - sbp2_logout_device(scsi_id); - sbp2_remove_device(scsi_id); + sbp2_logout_device(lu); + sbp2_remove_device(lu); return error; } return 0; alloc_fail: - SBP2_ERR("Could not allocate memory for scsi_id"); - sbp2_remove_device(scsi_id); + SBP2_ERR("Could not allocate memory for lu"); + sbp2_remove_device(lu); return -ENOMEM; } -static void sbp2_remove_device(struct scsi_id_instance_data *scsi_id) +static void sbp2_remove_device(struct sbp2_lu *lu) { struct sbp2_fwhost_info *hi; - if (!scsi_id) + if (!lu) return; - hi = scsi_id->hi; + hi = lu->hi; - if (scsi_id->scsi_host) { - scsi_remove_host(scsi_id->scsi_host); - scsi_host_put(scsi_id->scsi_host); + if (lu->shost) { + scsi_remove_host(lu->shost); + scsi_host_put(lu->shost); } flush_scheduled_work(); - sbp2util_remove_command_orb_pool(scsi_id); + sbp2util_remove_command_orb_pool(lu); - list_del(&scsi_id->scsi_list); + list_del(&lu->lu_list); - if (scsi_id->login_response) + if (lu->login_response) pci_free_consistent(hi->host->pdev, sizeof(struct sbp2_login_response), - scsi_id->login_response, - scsi_id->login_response_dma); - if (scsi_id->login_orb) + lu->login_response, + lu->login_response_dma); + if (lu->login_orb) pci_free_consistent(hi->host->pdev, sizeof(struct sbp2_login_orb), - scsi_id->login_orb, - scsi_id->login_orb_dma); - if (scsi_id->reconnect_orb) + lu->login_orb, + lu->login_orb_dma); + if (lu->reconnect_orb) pci_free_consistent(hi->host->pdev, sizeof(struct sbp2_reconnect_orb), - scsi_id->reconnect_orb, - scsi_id->reconnect_orb_dma); - if (scsi_id->logout_orb) + lu->reconnect_orb, + lu->reconnect_orb_dma); + if (lu->logout_orb) pci_free_consistent(hi->host->pdev, sizeof(struct sbp2_logout_orb), - scsi_id->logout_orb, - scsi_id->logout_orb_dma); - if (scsi_id->query_logins_orb) + lu->logout_orb, + lu->logout_orb_dma); + if (lu->query_logins_orb) pci_free_consistent(hi->host->pdev, sizeof(struct sbp2_query_logins_orb), - scsi_id->query_logins_orb, - scsi_id->query_logins_orb_dma); - if (scsi_id->query_logins_response) + lu->query_logins_orb, + lu->query_logins_orb_dma); + if (lu->query_logins_response) pci_free_consistent(hi->host->pdev, sizeof(struct sbp2_query_logins_response), - scsi_id->query_logins_response, - scsi_id->query_logins_response_dma); + lu->query_logins_response, + lu->query_logins_response_dma); - if (scsi_id->status_fifo_addr != CSR1212_INVALID_ADDR_SPACE) + if (lu->status_fifo_addr != CSR1212_INVALID_ADDR_SPACE) hpsb_unregister_addrspace(&sbp2_highlevel, hi->host, - scsi_id->status_fifo_addr); + lu->status_fifo_addr); - scsi_id->ud->device.driver_data = NULL; + lu->ud->device.driver_data = NULL; if (hi) module_put(hi->host->driver->owner); - kfree(scsi_id); + kfree(lu); } #ifdef CONFIG_IEEE1394_SBP2_PHYS_DMA @@ -1037,62 +1007,69 @@ static int sbp2_handle_physdma_read(struct hpsb_host *host, int nodeid, * SBP-2 protocol related section **************************************/ -static int sbp2_query_logins(struct scsi_id_instance_data *scsi_id) +static int sbp2_query_logins(struct sbp2_lu *lu) { - struct sbp2_fwhost_info *hi = scsi_id->hi; + struct sbp2_fwhost_info *hi = lu->hi; quadlet_t data[2]; int max_logins; int active_logins; - scsi_id->query_logins_orb->reserved1 = 0x0; - scsi_id->query_logins_orb->reserved2 = 0x0; - - scsi_id->query_logins_orb->query_response_lo = scsi_id->query_logins_response_dma; - scsi_id->query_logins_orb->query_response_hi = ORB_SET_NODE_ID(hi->host->node_id); + lu->query_logins_orb->reserved1 = 0x0; + lu->query_logins_orb->reserved2 = 0x0; - scsi_id->query_logins_orb->lun_misc = ORB_SET_FUNCTION(SBP2_QUERY_LOGINS_REQUEST); - scsi_id->query_logins_orb->lun_misc |= ORB_SET_NOTIFY(1); - scsi_id->query_logins_orb->lun_misc |= ORB_SET_LUN(scsi_id->lun); + lu->query_logins_orb->query_response_lo = lu->query_logins_response_dma; + lu->query_logins_orb->query_response_hi = + ORB_SET_NODE_ID(hi->host->node_id); + lu->query_logins_orb->lun_misc = + ORB_SET_FUNCTION(SBP2_QUERY_LOGINS_REQUEST); + lu->query_logins_orb->lun_misc |= ORB_SET_NOTIFY(1); + lu->query_logins_orb->lun_misc |= ORB_SET_LUN(lu->lun); - scsi_id->query_logins_orb->reserved_resp_length = - ORB_SET_QUERY_LOGINS_RESP_LENGTH(sizeof(struct sbp2_query_logins_response)); + lu->query_logins_orb->reserved_resp_length = + ORB_SET_QUERY_LOGINS_RESP_LENGTH( + sizeof(struct sbp2_query_logins_response)); - scsi_id->query_logins_orb->status_fifo_hi = - ORB_SET_STATUS_FIFO_HI(scsi_id->status_fifo_addr, hi->host->node_id); - scsi_id->query_logins_orb->status_fifo_lo = - ORB_SET_STATUS_FIFO_LO(scsi_id->status_fifo_addr); + lu->query_logins_orb->status_fifo_hi = + ORB_SET_STATUS_FIFO_HI(lu->status_fifo_addr, hi->host->node_id); + lu->query_logins_orb->status_fifo_lo = + ORB_SET_STATUS_FIFO_LO(lu->status_fifo_addr); - sbp2util_cpu_to_be32_buffer(scsi_id->query_logins_orb, sizeof(struct sbp2_query_logins_orb)); + sbp2util_cpu_to_be32_buffer(lu->query_logins_orb, + sizeof(struct sbp2_query_logins_orb)); - memset(scsi_id->query_logins_response, 0, sizeof(struct sbp2_query_logins_response)); + memset(lu->query_logins_response, 0, + sizeof(struct sbp2_query_logins_response)); data[0] = ORB_SET_NODE_ID(hi->host->node_id); - data[1] = scsi_id->query_logins_orb_dma; + data[1] = lu->query_logins_orb_dma; sbp2util_cpu_to_be32_buffer(data, 8); - hpsb_node_write(scsi_id->ne, scsi_id->management_agent_addr, data, 8); + hpsb_node_write(lu->ne, lu->management_agent_addr, data, 8); - if (sbp2util_access_timeout(scsi_id, 2*HZ)) { + if (sbp2util_access_timeout(lu, 2*HZ)) { SBP2_INFO("Error querying logins to SBP-2 device - timed out"); return -EIO; } - if (scsi_id->status_block.ORB_offset_lo != scsi_id->query_logins_orb_dma) { + if (lu->status_block.ORB_offset_lo != lu->query_logins_orb_dma) { SBP2_INFO("Error querying logins to SBP-2 device - timed out"); return -EIO; } - if (STATUS_TEST_RDS(scsi_id->status_block.ORB_offset_hi_misc)) { + if (STATUS_TEST_RDS(lu->status_block.ORB_offset_hi_misc)) { SBP2_INFO("Error querying logins to SBP-2 device - failed"); return -EIO; } - sbp2util_cpu_to_be32_buffer(scsi_id->query_logins_response, sizeof(struct sbp2_query_logins_response)); + sbp2util_cpu_to_be32_buffer(lu->query_logins_response, + sizeof(struct sbp2_query_logins_response)); - max_logins = RESPONSE_GET_MAX_LOGINS(scsi_id->query_logins_response->length_max_logins); + max_logins = RESPONSE_GET_MAX_LOGINS( + lu->query_logins_response->length_max_logins); SBP2_INFO("Maximum concurrent logins supported: %d", max_logins); - active_logins = RESPONSE_GET_ACTIVE_LOGINS(scsi_id->query_logins_response->length_max_logins); + active_logins = RESPONSE_GET_ACTIVE_LOGINS( + lu->query_logins_response->length_max_logins); SBP2_INFO("Number of active logins: %d", active_logins); if (active_logins >= max_logins) { @@ -1102,164 +1079,169 @@ static int sbp2_query_logins(struct scsi_id_instance_data *scsi_id) return 0; } -static int sbp2_login_device(struct scsi_id_instance_data *scsi_id) +static int sbp2_login_device(struct sbp2_lu *lu) { - struct sbp2_fwhost_info *hi = scsi_id->hi; + struct sbp2_fwhost_info *hi = lu->hi; quadlet_t data[2]; - if (!scsi_id->login_orb) + if (!lu->login_orb) return -EIO; - if (!sbp2_exclusive_login && sbp2_query_logins(scsi_id)) { + if (!sbp2_exclusive_login && sbp2_query_logins(lu)) { SBP2_INFO("Device does not support any more concurrent logins"); return -EIO; } /* assume no password */ - scsi_id->login_orb->password_hi = 0; - scsi_id->login_orb->password_lo = 0; + lu->login_orb->password_hi = 0; + lu->login_orb->password_lo = 0; - scsi_id->login_orb->login_response_lo = scsi_id->login_response_dma; - scsi_id->login_orb->login_response_hi = ORB_SET_NODE_ID(hi->host->node_id); - scsi_id->login_orb->lun_misc = ORB_SET_FUNCTION(SBP2_LOGIN_REQUEST); + lu->login_orb->login_response_lo = lu->login_response_dma; + lu->login_orb->login_response_hi = ORB_SET_NODE_ID(hi->host->node_id); + lu->login_orb->lun_misc = ORB_SET_FUNCTION(SBP2_LOGIN_REQUEST); /* one second reconnect time */ - scsi_id->login_orb->lun_misc |= ORB_SET_RECONNECT(0); - scsi_id->login_orb->lun_misc |= ORB_SET_EXCLUSIVE(sbp2_exclusive_login); - scsi_id->login_orb->lun_misc |= ORB_SET_NOTIFY(1); - scsi_id->login_orb->lun_misc |= ORB_SET_LUN(scsi_id->lun); + lu->login_orb->lun_misc |= ORB_SET_RECONNECT(0); + lu->login_orb->lun_misc |= ORB_SET_EXCLUSIVE(sbp2_exclusive_login); + lu->login_orb->lun_misc |= ORB_SET_NOTIFY(1); + lu->login_orb->lun_misc |= ORB_SET_LUN(lu->lun); - scsi_id->login_orb->passwd_resp_lengths = + lu->login_orb->passwd_resp_lengths = ORB_SET_LOGIN_RESP_LENGTH(sizeof(struct sbp2_login_response)); - scsi_id->login_orb->status_fifo_hi = - ORB_SET_STATUS_FIFO_HI(scsi_id->status_fifo_addr, hi->host->node_id); - scsi_id->login_orb->status_fifo_lo = - ORB_SET_STATUS_FIFO_LO(scsi_id->status_fifo_addr); + lu->login_orb->status_fifo_hi = + ORB_SET_STATUS_FIFO_HI(lu->status_fifo_addr, hi->host->node_id); + lu->login_orb->status_fifo_lo = + ORB_SET_STATUS_FIFO_LO(lu->status_fifo_addr); - sbp2util_cpu_to_be32_buffer(scsi_id->login_orb, sizeof(struct sbp2_login_orb)); + sbp2util_cpu_to_be32_buffer(lu->login_orb, + sizeof(struct sbp2_login_orb)); - memset(scsi_id->login_response, 0, sizeof(struct sbp2_login_response)); + memset(lu->login_response, 0, sizeof(struct sbp2_login_response)); data[0] = ORB_SET_NODE_ID(hi->host->node_id); - data[1] = scsi_id->login_orb_dma; + data[1] = lu->login_orb_dma; sbp2util_cpu_to_be32_buffer(data, 8); - hpsb_node_write(scsi_id->ne, scsi_id->management_agent_addr, data, 8); + hpsb_node_write(lu->ne, lu->management_agent_addr, data, 8); /* wait up to 20 seconds for login status */ - if (sbp2util_access_timeout(scsi_id, 20*HZ)) { + if (sbp2util_access_timeout(lu, 20*HZ)) { SBP2_ERR("Error logging into SBP-2 device - timed out"); return -EIO; } /* make sure that the returned status matches the login ORB */ - if (scsi_id->status_block.ORB_offset_lo != scsi_id->login_orb_dma) { + if (lu->status_block.ORB_offset_lo != lu->login_orb_dma) { SBP2_ERR("Error logging into SBP-2 device - timed out"); return -EIO; } - if (STATUS_TEST_RDS(scsi_id->status_block.ORB_offset_hi_misc)) { + if (STATUS_TEST_RDS(lu->status_block.ORB_offset_hi_misc)) { SBP2_ERR("Error logging into SBP-2 device - failed"); return -EIO; } - sbp2util_cpu_to_be32_buffer(scsi_id->login_response, sizeof(struct sbp2_login_response)); - scsi_id->command_block_agent_addr = - ((u64)scsi_id->login_response->command_block_agent_hi) << 32; - scsi_id->command_block_agent_addr |= ((u64)scsi_id->login_response->command_block_agent_lo); - scsi_id->command_block_agent_addr &= 0x0000ffffffffffffULL; + sbp2util_cpu_to_be32_buffer(lu->login_response, + sizeof(struct sbp2_login_response)); + lu->command_block_agent_addr = + ((u64)lu->login_response->command_block_agent_hi) << 32; + lu->command_block_agent_addr |= + ((u64)lu->login_response->command_block_agent_lo); + lu->command_block_agent_addr &= 0x0000ffffffffffffULL; SBP2_INFO("Logged into SBP-2 device"); return 0; } -static int sbp2_logout_device(struct scsi_id_instance_data *scsi_id) +static int sbp2_logout_device(struct sbp2_lu *lu) { - struct sbp2_fwhost_info *hi = scsi_id->hi; + struct sbp2_fwhost_info *hi = lu->hi; quadlet_t data[2]; int error; - scsi_id->logout_orb->reserved1 = 0x0; - scsi_id->logout_orb->reserved2 = 0x0; - scsi_id->logout_orb->reserved3 = 0x0; - scsi_id->logout_orb->reserved4 = 0x0; + lu->logout_orb->reserved1 = 0x0; + lu->logout_orb->reserved2 = 0x0; + lu->logout_orb->reserved3 = 0x0; + lu->logout_orb->reserved4 = 0x0; - scsi_id->logout_orb->login_ID_misc = ORB_SET_FUNCTION(SBP2_LOGOUT_REQUEST); - scsi_id->logout_orb->login_ID_misc |= ORB_SET_LOGIN_ID(scsi_id->login_response->length_login_ID); - scsi_id->logout_orb->login_ID_misc |= ORB_SET_NOTIFY(1); + lu->logout_orb->login_ID_misc = ORB_SET_FUNCTION(SBP2_LOGOUT_REQUEST); + lu->logout_orb->login_ID_misc |= + ORB_SET_LOGIN_ID(lu->login_response->length_login_ID); + lu->logout_orb->login_ID_misc |= ORB_SET_NOTIFY(1); - scsi_id->logout_orb->reserved5 = 0x0; - scsi_id->logout_orb->status_fifo_hi = - ORB_SET_STATUS_FIFO_HI(scsi_id->status_fifo_addr, hi->host->node_id); - scsi_id->logout_orb->status_fifo_lo = - ORB_SET_STATUS_FIFO_LO(scsi_id->status_fifo_addr); + lu->logout_orb->reserved5 = 0x0; + lu->logout_orb->status_fifo_hi = + ORB_SET_STATUS_FIFO_HI(lu->status_fifo_addr, hi->host->node_id); + lu->logout_orb->status_fifo_lo = + ORB_SET_STATUS_FIFO_LO(lu->status_fifo_addr); - sbp2util_cpu_to_be32_buffer(scsi_id->logout_orb, sizeof(struct sbp2_logout_orb)); + sbp2util_cpu_to_be32_buffer(lu->logout_orb, + sizeof(struct sbp2_logout_orb)); data[0] = ORB_SET_NODE_ID(hi->host->node_id); - data[1] = scsi_id->logout_orb_dma; + data[1] = lu->logout_orb_dma; sbp2util_cpu_to_be32_buffer(data, 8); - error = hpsb_node_write(scsi_id->ne, - scsi_id->management_agent_addr, data, 8); + error = hpsb_node_write(lu->ne, lu->management_agent_addr, data, 8); if (error) return error; /* wait up to 1 second for the device to complete logout */ - if (sbp2util_access_timeout(scsi_id, HZ)) + if (sbp2util_access_timeout(lu, HZ)) return -EIO; SBP2_INFO("Logged out of SBP-2 device"); return 0; } -static int sbp2_reconnect_device(struct scsi_id_instance_data *scsi_id) +static int sbp2_reconnect_device(struct sbp2_lu *lu) { - struct sbp2_fwhost_info *hi = scsi_id->hi; + struct sbp2_fwhost_info *hi = lu->hi; quadlet_t data[2]; int error; - scsi_id->reconnect_orb->reserved1 = 0x0; - scsi_id->reconnect_orb->reserved2 = 0x0; - scsi_id->reconnect_orb->reserved3 = 0x0; - scsi_id->reconnect_orb->reserved4 = 0x0; + lu->reconnect_orb->reserved1 = 0x0; + lu->reconnect_orb->reserved2 = 0x0; + lu->reconnect_orb->reserved3 = 0x0; + lu->reconnect_orb->reserved4 = 0x0; - scsi_id->reconnect_orb->login_ID_misc = ORB_SET_FUNCTION(SBP2_RECONNECT_REQUEST); - scsi_id->reconnect_orb->login_ID_misc |= - ORB_SET_LOGIN_ID(scsi_id->login_response->length_login_ID); - scsi_id->reconnect_orb->login_ID_misc |= ORB_SET_NOTIFY(1); + lu->reconnect_orb->login_ID_misc = + ORB_SET_FUNCTION(SBP2_RECONNECT_REQUEST); + lu->reconnect_orb->login_ID_misc |= + ORB_SET_LOGIN_ID(lu->login_response->length_login_ID); + lu->reconnect_orb->login_ID_misc |= ORB_SET_NOTIFY(1); - scsi_id->reconnect_orb->reserved5 = 0x0; - scsi_id->reconnect_orb->status_fifo_hi = - ORB_SET_STATUS_FIFO_HI(scsi_id->status_fifo_addr, hi->host->node_id); - scsi_id->reconnect_orb->status_fifo_lo = - ORB_SET_STATUS_FIFO_LO(scsi_id->status_fifo_addr); + lu->reconnect_orb->reserved5 = 0x0; + lu->reconnect_orb->status_fifo_hi = + ORB_SET_STATUS_FIFO_HI(lu->status_fifo_addr, hi->host->node_id); + lu->reconnect_orb->status_fifo_lo = + ORB_SET_STATUS_FIFO_LO(lu->status_fifo_addr); - sbp2util_cpu_to_be32_buffer(scsi_id->reconnect_orb, sizeof(struct sbp2_reconnect_orb)); + sbp2util_cpu_to_be32_buffer(lu->reconnect_orb, + sizeof(struct sbp2_reconnect_orb)); data[0] = ORB_SET_NODE_ID(hi->host->node_id); - data[1] = scsi_id->reconnect_orb_dma; + data[1] = lu->reconnect_orb_dma; sbp2util_cpu_to_be32_buffer(data, 8); - error = hpsb_node_write(scsi_id->ne, - scsi_id->management_agent_addr, data, 8); + error = hpsb_node_write(lu->ne, lu->management_agent_addr, data, 8); if (error) return error; /* wait up to 1 second for reconnect status */ - if (sbp2util_access_timeout(scsi_id, HZ)) { + if (sbp2util_access_timeout(lu, HZ)) { SBP2_ERR("Error reconnecting to SBP-2 device - timed out"); return -EIO; } /* make sure that the returned status matches the reconnect ORB */ - if (scsi_id->status_block.ORB_offset_lo != scsi_id->reconnect_orb_dma) { + if (lu->status_block.ORB_offset_lo != lu->reconnect_orb_dma) { SBP2_ERR("Error reconnecting to SBP-2 device - timed out"); return -EIO; } - if (STATUS_TEST_RDS(scsi_id->status_block.ORB_offset_hi_misc)) { + if (STATUS_TEST_RDS(lu->status_block.ORB_offset_hi_misc)) { SBP2_ERR("Error reconnecting to SBP-2 device - failed"); return -EIO; } @@ -1272,17 +1254,17 @@ static int sbp2_reconnect_device(struct scsi_id_instance_data *scsi_id) * Set the target node's Single Phase Retry limit. Affects the target's retry * behaviour if our node is too busy to accept requests. */ -static int sbp2_set_busy_timeout(struct scsi_id_instance_data *scsi_id) +static int sbp2_set_busy_timeout(struct sbp2_lu *lu) { quadlet_t data; data = cpu_to_be32(SBP2_BUSY_TIMEOUT_VALUE); - if (hpsb_node_write(scsi_id->ne, SBP2_BUSY_TIMEOUT_ADDRESS, &data, 4)) + if (hpsb_node_write(lu->ne, SBP2_BUSY_TIMEOUT_ADDRESS, &data, 4)) SBP2_ERR("%s error", __FUNCTION__); return 0; } -static void sbp2_parse_unit_directory(struct scsi_id_instance_data *scsi_id, +static void sbp2_parse_unit_directory(struct sbp2_lu *lu, struct unit_directory *ud) { struct csr1212_keyval *kv; @@ -1305,8 +1287,7 @@ static void sbp2_parse_unit_directory(struct scsi_id_instance_data *scsi_id, (kv->value.csr_offset << 2); else if (kv->key.type == CSR1212_KV_TYPE_IMMEDIATE) - scsi_id->lun = - ORB_SET_LUN(kv->value.immediate); + lu->lun = ORB_SET_LUN(kv->value.immediate); break; case SBP2_UNIT_CHARACTERISTICS_KEY: @@ -1364,14 +1345,14 @@ static void sbp2_parse_unit_directory(struct scsi_id_instance_data *scsi_id, /* If this is a logical unit directory entry, process the parent * to get the values. */ if (ud->flags & UNIT_DIRECTORY_LUN_DIRECTORY) { - struct unit_directory *parent_ud = - container_of(ud->device.parent, struct unit_directory, device); - sbp2_parse_unit_directory(scsi_id, parent_ud); + struct unit_directory *parent_ud = container_of( + ud->device.parent, struct unit_directory, device); + sbp2_parse_unit_directory(lu, parent_ud); } else { - scsi_id->management_agent_addr = management_agent_addr; - scsi_id->workarounds = workarounds; + lu->management_agent_addr = management_agent_addr; + lu->workarounds = workarounds; if (ud->flags & UNIT_DIRECTORY_HAS_LUN) - scsi_id->lun = ORB_SET_LUN(ud->lun); + lu->lun = ORB_SET_LUN(ud->lun); } } @@ -1386,59 +1367,58 @@ static void sbp2_parse_unit_directory(struct scsi_id_instance_data *scsi_id, * the speed that it needs to use, and the max_rec the host supports, and * it takes care of the rest. */ -static int sbp2_max_speed_and_size(struct scsi_id_instance_data *scsi_id) +static int sbp2_max_speed_and_size(struct sbp2_lu *lu) { - struct sbp2_fwhost_info *hi = scsi_id->hi; + struct sbp2_fwhost_info *hi = lu->hi; u8 payload; - scsi_id->speed_code = - hi->host->speed[NODEID_TO_NODE(scsi_id->ne->nodeid)]; + lu->speed_code = hi->host->speed[NODEID_TO_NODE(lu->ne->nodeid)]; - if (scsi_id->speed_code > sbp2_max_speed) { - scsi_id->speed_code = sbp2_max_speed; + if (lu->speed_code > sbp2_max_speed) { + lu->speed_code = sbp2_max_speed; SBP2_INFO("Reducing speed to %s", hpsb_speedto_str[sbp2_max_speed]); } /* Payload size is the lesser of what our speed supports and what * our host supports. */ - payload = min(sbp2_speedto_max_payload[scsi_id->speed_code], + payload = min(sbp2_speedto_max_payload[lu->speed_code], (u8) (hi->host->csr.max_rec - 1)); /* If physical DMA is off, work around limitation in ohci1394: * packet size must not exceed PAGE_SIZE */ - if (scsi_id->ne->host->low_addr_space < (1ULL << 32)) + if (lu->ne->host->low_addr_space < (1ULL << 32)) while (SBP2_PAYLOAD_TO_BYTES(payload) + 24 > PAGE_SIZE && payload) payload--; SBP2_INFO("Node " NODE_BUS_FMT ": Max speed [%s] - Max payload [%u]", - NODE_BUS_ARGS(hi->host, scsi_id->ne->nodeid), - hpsb_speedto_str[scsi_id->speed_code], + NODE_BUS_ARGS(hi->host, lu->ne->nodeid), + hpsb_speedto_str[lu->speed_code], SBP2_PAYLOAD_TO_BYTES(payload)); - scsi_id->max_payload_size = payload; + lu->max_payload_size = payload; return 0; } -static int sbp2_agent_reset(struct scsi_id_instance_data *scsi_id, int wait) +static int sbp2_agent_reset(struct sbp2_lu *lu, int wait) { quadlet_t data; u64 addr; int retval; unsigned long flags; - /* cancel_delayed_work(&scsi_id->protocol_work); */ + /* cancel_delayed_work(&lu->protocol_work); */ if (wait) flush_scheduled_work(); data = ntohl(SBP2_AGENT_RESET_DATA); - addr = scsi_id->command_block_agent_addr + SBP2_AGENT_RESET_OFFSET; + addr = lu->command_block_agent_addr + SBP2_AGENT_RESET_OFFSET; if (wait) - retval = hpsb_node_write(scsi_id->ne, addr, &data, 4); + retval = hpsb_node_write(lu->ne, addr, &data, 4); else - retval = sbp2util_node_write_no_wait(scsi_id->ne, addr, &data, 4); + retval = sbp2util_node_write_no_wait(lu->ne, addr, &data, 4); if (retval < 0) { SBP2_ERR("hpsb_node_write failed.\n"); @@ -1446,22 +1426,22 @@ static int sbp2_agent_reset(struct scsi_id_instance_data *scsi_id, int wait) } /* make sure that the ORB_POINTER is written on next command */ - spin_lock_irqsave(&scsi_id->cmd_orb_lock, flags); - scsi_id->last_orb = NULL; - spin_unlock_irqrestore(&scsi_id->cmd_orb_lock, flags); + spin_lock_irqsave(&lu->cmd_orb_lock, flags); + lu->last_orb = NULL; + spin_unlock_irqrestore(&lu->cmd_orb_lock, flags); return 0; } static void sbp2_prep_command_orb_sg(struct sbp2_command_orb *orb, struct sbp2_fwhost_info *hi, - struct sbp2_command_info *command, + struct sbp2_command_info *cmd, unsigned int scsi_use_sg, struct scatterlist *sgpnt, u32 orb_direction, enum dma_data_direction dma_dir) { - command->dma_dir = dma_dir; + cmd->dma_dir = dma_dir; orb->data_descriptor_hi = ORB_SET_NODE_ID(hi->host->node_id); orb->misc |= ORB_SET_DIRECTION(orb_direction); @@ -1469,31 +1449,29 @@ static void sbp2_prep_command_orb_sg(struct sbp2_command_orb *orb, if ((scsi_use_sg == 1) && (sgpnt[0].length <= SBP2_MAX_SG_ELEMENT_LENGTH)) { - command->dma_size = sgpnt[0].length; - command->dma_type = CMD_DMA_PAGE; - command->cmd_dma = pci_map_page(hi->host->pdev, - sgpnt[0].page, - sgpnt[0].offset, - command->dma_size, - command->dma_dir); + cmd->dma_size = sgpnt[0].length; + cmd->dma_type = CMD_DMA_PAGE; + cmd->cmd_dma = pci_map_page(hi->host->pdev, + sgpnt[0].page, sgpnt[0].offset, + cmd->dma_size, cmd->dma_dir); - orb->data_descriptor_lo = command->cmd_dma; - orb->misc |= ORB_SET_DATA_SIZE(command->dma_size); + orb->data_descriptor_lo = cmd->cmd_dma; + orb->misc |= ORB_SET_DATA_SIZE(cmd->dma_size); } else { struct sbp2_unrestricted_page_table *sg_element = - &command->scatter_gather_element[0]; + &cmd->scatter_gather_element[0]; u32 sg_count, sg_len; dma_addr_t sg_addr; int i, count = pci_map_sg(hi->host->pdev, sgpnt, scsi_use_sg, dma_dir); - command->dma_size = scsi_use_sg; - command->sge_buffer = sgpnt; + cmd->dma_size = scsi_use_sg; + cmd->sge_buffer = sgpnt; /* use page tables (s/g) */ orb->misc |= ORB_SET_PAGE_TABLE_PRESENT(0x1); - orb->data_descriptor_lo = command->sge_dma; + orb->data_descriptor_lo = cmd->sge_dma; /* loop through and fill out our SBP-2 page tables * (and split up anything too large) */ @@ -1519,25 +1497,25 @@ static void sbp2_prep_command_orb_sg(struct sbp2_command_orb *orb, orb->misc |= ORB_SET_DATA_SIZE(sg_count); sbp2util_cpu_to_be32_buffer(sg_element, - (sizeof(struct sbp2_unrestricted_page_table)) * - sg_count); + (sizeof(struct sbp2_unrestricted_page_table)) * + sg_count); } } static void sbp2_prep_command_orb_no_sg(struct sbp2_command_orb *orb, struct sbp2_fwhost_info *hi, - struct sbp2_command_info *command, + struct sbp2_command_info *cmd, struct scatterlist *sgpnt, u32 orb_direction, unsigned int scsi_request_bufflen, void *scsi_request_buffer, enum dma_data_direction dma_dir) { - command->dma_dir = dma_dir; - command->dma_size = scsi_request_bufflen; - command->dma_type = CMD_DMA_SINGLE; - command->cmd_dma = pci_map_single(hi->host->pdev, scsi_request_buffer, - command->dma_size, command->dma_dir); + cmd->dma_dir = dma_dir; + cmd->dma_size = scsi_request_bufflen; + cmd->dma_type = CMD_DMA_SINGLE; + cmd->cmd_dma = pci_map_single(hi->host->pdev, scsi_request_buffer, + cmd->dma_size, cmd->dma_dir); orb->data_descriptor_hi = ORB_SET_NODE_ID(hi->host->node_id); orb->misc |= ORB_SET_DIRECTION(orb_direction); @@ -1545,24 +1523,24 @@ static void sbp2_prep_command_orb_no_sg(struct sbp2_command_orb *orb, * (but check for transfers larger than 64K) */ if (scsi_request_bufflen <= SBP2_MAX_SG_ELEMENT_LENGTH) { - orb->data_descriptor_lo = command->cmd_dma; + orb->data_descriptor_lo = cmd->cmd_dma; orb->misc |= ORB_SET_DATA_SIZE(scsi_request_bufflen); } else { /* The buffer is too large. Turn this into page tables. */ struct sbp2_unrestricted_page_table *sg_element = - &command->scatter_gather_element[0]; + &cmd->scatter_gather_element[0]; u32 sg_count, sg_len; dma_addr_t sg_addr; - orb->data_descriptor_lo = command->sge_dma; + orb->data_descriptor_lo = cmd->sge_dma; orb->misc |= ORB_SET_PAGE_TABLE_PRESENT(0x1); /* fill out our SBP-2 page tables; split up the large buffer */ sg_count = 0; sg_len = scsi_request_bufflen; - sg_addr = command->cmd_dma; + sg_addr = cmd->cmd_dma; while (sg_len) { sg_element[sg_count].segment_base_lo = sg_addr; if (sg_len > SBP2_MAX_SG_ELEMENT_LENGTH) { @@ -1581,22 +1559,22 @@ static void sbp2_prep_command_orb_no_sg(struct sbp2_command_orb *orb, orb->misc |= ORB_SET_DATA_SIZE(sg_count); sbp2util_cpu_to_be32_buffer(sg_element, - (sizeof(struct sbp2_unrestricted_page_table)) * - sg_count); + (sizeof(struct sbp2_unrestricted_page_table)) * + sg_count); } } -static void sbp2_create_command_orb(struct scsi_id_instance_data *scsi_id, - struct sbp2_command_info *command, +static void sbp2_create_command_orb(struct sbp2_lu *lu, + struct sbp2_command_info *cmd, unchar *scsi_cmd, unsigned int scsi_use_sg, unsigned int scsi_request_bufflen, void *scsi_request_buffer, enum dma_data_direction dma_dir) { - struct sbp2_fwhost_info *hi = scsi_id->hi; + struct sbp2_fwhost_info *hi = lu->hi; struct scatterlist *sgpnt = (struct scatterlist *)scsi_request_buffer; - struct sbp2_command_orb *command_orb = &command->command_orb; + struct sbp2_command_orb *orb = &cmd->command_orb; u32 orb_direction; /* @@ -1607,11 +1585,11 @@ static void sbp2_create_command_orb(struct scsi_id_instance_data *scsi_id, * that data_size becomes the number of s/g elements, and * page_size should be zero (for unrestricted). */ - command_orb->next_ORB_hi = ORB_SET_NULL_PTR(1); - command_orb->next_ORB_lo = 0x0; - command_orb->misc = ORB_SET_MAX_PAYLOAD(scsi_id->max_payload_size); - command_orb->misc |= ORB_SET_SPEED(scsi_id->speed_code); - command_orb->misc |= ORB_SET_NOTIFY(1); + orb->next_ORB_hi = ORB_SET_NULL_PTR(1); + orb->next_ORB_lo = 0x0; + orb->misc = ORB_SET_MAX_PAYLOAD(lu->max_payload_size); + orb->misc |= ORB_SET_SPEED(lu->speed_code); + orb->misc |= ORB_SET_NOTIFY(1); if (dma_dir == DMA_NONE) orb_direction = ORB_DIRECTION_NO_DATA_TRANSFER; @@ -1626,46 +1604,45 @@ static void sbp2_create_command_orb(struct scsi_id_instance_data *scsi_id, /* set up our page table stuff */ if (orb_direction == ORB_DIRECTION_NO_DATA_TRANSFER) { - command_orb->data_descriptor_hi = 0x0; - command_orb->data_descriptor_lo = 0x0; - command_orb->misc |= ORB_SET_DIRECTION(1); + orb->data_descriptor_hi = 0x0; + orb->data_descriptor_lo = 0x0; + orb->misc |= ORB_SET_DIRECTION(1); } else if (scsi_use_sg) - sbp2_prep_command_orb_sg(command_orb, hi, command, scsi_use_sg, - sgpnt, orb_direction, dma_dir); + sbp2_prep_command_orb_sg(orb, hi, cmd, scsi_use_sg, sgpnt, + orb_direction, dma_dir); else - sbp2_prep_command_orb_no_sg(command_orb, hi, command, sgpnt, - orb_direction, scsi_request_bufflen, + sbp2_prep_command_orb_no_sg(orb, hi, cmd, sgpnt, orb_direction, + scsi_request_bufflen, scsi_request_buffer, dma_dir); - sbp2util_cpu_to_be32_buffer(command_orb, sizeof(struct sbp2_command_orb)); + sbp2util_cpu_to_be32_buffer(orb, sizeof(*orb)); - memset(command_orb->cdb, 0, 12); - memcpy(command_orb->cdb, scsi_cmd, COMMAND_SIZE(*scsi_cmd)); + memset(orb->cdb, 0, 12); + memcpy(orb->cdb, scsi_cmd, COMMAND_SIZE(*scsi_cmd)); } -static void sbp2_link_orb_command(struct scsi_id_instance_data *scsi_id, - struct sbp2_command_info *command) +static void sbp2_link_orb_command(struct sbp2_lu *lu, + struct sbp2_command_info *cmd) { - struct sbp2_fwhost_info *hi = scsi_id->hi; - struct sbp2_command_orb *command_orb = &command->command_orb; + struct sbp2_fwhost_info *hi = lu->hi; struct sbp2_command_orb *last_orb; dma_addr_t last_orb_dma; - u64 addr = scsi_id->command_block_agent_addr; + u64 addr = lu->command_block_agent_addr; quadlet_t data[2]; size_t length; unsigned long flags; - pci_dma_sync_single_for_device(hi->host->pdev, command->command_orb_dma, + pci_dma_sync_single_for_device(hi->host->pdev, cmd->command_orb_dma, sizeof(struct sbp2_command_orb), PCI_DMA_TODEVICE); - pci_dma_sync_single_for_device(hi->host->pdev, command->sge_dma, - sizeof(command->scatter_gather_element), + pci_dma_sync_single_for_device(hi->host->pdev, cmd->sge_dma, + sizeof(cmd->scatter_gather_element), PCI_DMA_BIDIRECTIONAL); /* check to see if there are any previous orbs to use */ - spin_lock_irqsave(&scsi_id->cmd_orb_lock, flags); - last_orb = scsi_id->last_orb; - last_orb_dma = scsi_id->last_orb_dma; + spin_lock_irqsave(&lu->cmd_orb_lock, flags); + last_orb = lu->last_orb; + last_orb_dma = lu->last_orb_dma; if (!last_orb) { /* * last_orb == NULL means: We know that the target's fetch agent @@ -1673,7 +1650,7 @@ static void sbp2_link_orb_command(struct scsi_id_instance_data *scsi_id, */ addr += SBP2_ORB_POINTER_OFFSET; data[0] = ORB_SET_NODE_ID(hi->host->node_id); - data[1] = command->command_orb_dma; + data[1] = cmd->command_orb_dma; sbp2util_cpu_to_be32_buffer(data, 8); length = 8; } else { @@ -1687,7 +1664,7 @@ static void sbp2_link_orb_command(struct scsi_id_instance_data *scsi_id, pci_dma_sync_single_for_cpu(hi->host->pdev, last_orb_dma, sizeof(struct sbp2_command_orb), PCI_DMA_TODEVICE); - last_orb->next_ORB_lo = cpu_to_be32(command->command_orb_dma); + last_orb->next_ORB_lo = cpu_to_be32(cmd->command_orb_dma); wmb(); /* Tells hardware that this pointer is valid */ last_orb->next_ORB_hi = 0; @@ -1698,11 +1675,11 @@ static void sbp2_link_orb_command(struct scsi_id_instance_data *scsi_id, data[0] = 0; length = 4; } - scsi_id->last_orb = command_orb; - scsi_id->last_orb_dma = command->command_orb_dma; - spin_unlock_irqrestore(&scsi_id->cmd_orb_lock, flags); + lu->last_orb = &cmd->command_orb; + lu->last_orb_dma = cmd->command_orb_dma; + spin_unlock_irqrestore(&lu->cmd_orb_lock, flags); - if (sbp2util_node_write_no_wait(scsi_id->ne, addr, data, length)) { + if (sbp2util_node_write_no_wait(lu->ne, addr, data, length)) { /* * sbp2util_node_write_no_wait failed. We certainly ran out * of transaction labels, perhaps just because there were no @@ -1711,31 +1688,30 @@ static void sbp2_link_orb_command(struct scsi_id_instance_data *scsi_id, * the workqueue job will sleep to guaranteedly get a tlabel. * We do not accept new commands until the job is over. */ - scsi_block_requests(scsi_id->scsi_host); - PREPARE_WORK(&scsi_id->protocol_work, + scsi_block_requests(lu->shost); + PREPARE_WORK(&lu->protocol_work, last_orb ? sbp2util_write_doorbell: sbp2util_write_orb_pointer /* */); - schedule_work(&scsi_id->protocol_work); + schedule_work(&lu->protocol_work); } } -static int sbp2_send_command(struct scsi_id_instance_data *scsi_id, - struct scsi_cmnd *SCpnt, +static int sbp2_send_command(struct sbp2_lu *lu, struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *)) { - unchar *cmd = (unchar *) SCpnt->cmnd; + unchar *scsi_cmd = (unchar *)SCpnt->cmnd; unsigned int request_bufflen = SCpnt->request_bufflen; - struct sbp2_command_info *command; + struct sbp2_command_info *cmd; - command = sbp2util_allocate_command_orb(scsi_id, SCpnt, done); - if (!command) + cmd = sbp2util_allocate_command_orb(lu, SCpnt, done); + if (!cmd) return -EIO; - sbp2_create_command_orb(scsi_id, command, cmd, SCpnt->use_sg, + sbp2_create_command_orb(lu, cmd, scsi_cmd, SCpnt->use_sg, request_bufflen, SCpnt->request_buffer, SCpnt->sc_data_direction); - sbp2_link_orb_command(scsi_id, command); + sbp2_link_orb_command(lu, cmd); return 0; } @@ -1743,7 +1719,8 @@ static int sbp2_send_command(struct scsi_id_instance_data *scsi_id, /* * Translates SBP-2 status into SCSI sense data for check conditions */ -static unsigned int sbp2_status_to_sense_data(unchar *sbp2_status, unchar *sense_data) +static unsigned int sbp2_status_to_sense_data(unchar *sbp2_status, + unchar *sense_data) { /* OK, it's pretty ugly... ;-) */ sense_data[0] = 0x70; @@ -1771,11 +1748,11 @@ static int sbp2_handle_status_write(struct hpsb_host *host, int nodeid, size_t length, u16 fl) { struct sbp2_fwhost_info *hi; - struct scsi_id_instance_data *scsi_id = NULL, *scsi_id_tmp; + struct sbp2_lu *lu = NULL, *lu_tmp; struct scsi_cmnd *SCpnt = NULL; struct sbp2_status_block *sb; u32 scsi_status = SBP2_SCSI_STATUS_GOOD; - struct sbp2_command_info *command; + struct sbp2_command_info *cmd; unsigned long flags; if (unlikely(length < 8 || length > sizeof(struct sbp2_status_block))) { @@ -1793,49 +1770,50 @@ static int sbp2_handle_status_write(struct hpsb_host *host, int nodeid, } /* Find the unit which wrote the status. */ - list_for_each_entry(scsi_id_tmp, &hi->scsi_ids, scsi_list) { - if (scsi_id_tmp->ne->nodeid == nodeid && - scsi_id_tmp->status_fifo_addr == addr) { - scsi_id = scsi_id_tmp; + list_for_each_entry(lu_tmp, &hi->logical_units, lu_list) { + if (lu_tmp->ne->nodeid == nodeid && + lu_tmp->status_fifo_addr == addr) { + lu = lu_tmp; break; } } - if (unlikely(!scsi_id)) { - SBP2_ERR("scsi_id is NULL - device is gone?"); + if (unlikely(!lu)) { + SBP2_ERR("lu is NULL - device is gone?"); return RCODE_ADDRESS_ERROR; } - /* Put response into scsi_id status fifo buffer. The first two bytes + /* Put response into lu status fifo buffer. The first two bytes * come in big endian bit order. Often the target writes only a * truncated status block, minimally the first two quadlets. The rest * is implied to be zeros. */ - sb = &scsi_id->status_block; + sb = &lu->status_block; memset(sb->command_set_dependent, 0, sizeof(sb->command_set_dependent)); memcpy(sb, data, length); sbp2util_be32_to_cpu_buffer(sb, 8); /* Ignore unsolicited status. Handle command ORB status. */ if (unlikely(STATUS_GET_SRC(sb->ORB_offset_hi_misc) == 2)) - command = NULL; + cmd = NULL; else - command = sbp2util_find_command_for_orb(scsi_id, - sb->ORB_offset_lo); - if (command) { - pci_dma_sync_single_for_cpu(hi->host->pdev, command->command_orb_dma, - sizeof(struct sbp2_command_orb), - PCI_DMA_TODEVICE); - pci_dma_sync_single_for_cpu(hi->host->pdev, command->sge_dma, - sizeof(command->scatter_gather_element), - PCI_DMA_BIDIRECTIONAL); + cmd = sbp2util_find_command_for_orb(lu, sb->ORB_offset_lo); + if (cmd) { + pci_dma_sync_single_for_cpu(hi->host->pdev, + cmd->command_orb_dma, + sizeof(struct sbp2_command_orb), + PCI_DMA_TODEVICE); + pci_dma_sync_single_for_cpu(hi->host->pdev, + cmd->sge_dma, + sizeof(cmd->scatter_gather_element), + PCI_DMA_BIDIRECTIONAL); /* Grab SCSI command pointers and check status. */ /* * FIXME: If the src field in the status is 1, the ORB DMA must * not be reused until status for a subsequent ORB is received. */ - SCpnt = command->Current_SCpnt; - spin_lock_irqsave(&scsi_id->cmd_orb_lock, flags); - sbp2util_mark_command_completed(scsi_id, command); - spin_unlock_irqrestore(&scsi_id->cmd_orb_lock, flags); + SCpnt = cmd->Current_SCpnt; + spin_lock_irqsave(&lu->cmd_orb_lock, flags); + sbp2util_mark_command_completed(lu, cmd); + spin_unlock_irqrestore(&lu->cmd_orb_lock, flags); if (SCpnt) { u32 h = sb->ORB_offset_hi_misc; @@ -1855,7 +1833,7 @@ static int sbp2_handle_status_write(struct hpsb_host *host, int nodeid, (unchar *)sb, SCpnt->sense_buffer); if (STATUS_TEST_DEAD(h)) - sbp2_agent_reset(scsi_id, 0); + sbp2_agent_reset(lu, 0); } /* Check here to see if there are no commands in-use. If there @@ -1864,25 +1842,25 @@ static int sbp2_handle_status_write(struct hpsb_host *host, int nodeid, * last_orb so that next time we write directly to the * ORB_POINTER register. That way the fetch agent does not need * to refetch the next_ORB. */ - spin_lock_irqsave(&scsi_id->cmd_orb_lock, flags); - if (list_empty(&scsi_id->cmd_orb_inuse)) - scsi_id->last_orb = NULL; - spin_unlock_irqrestore(&scsi_id->cmd_orb_lock, flags); + spin_lock_irqsave(&lu->cmd_orb_lock, flags); + if (list_empty(&lu->cmd_orb_inuse)) + lu->last_orb = NULL; + spin_unlock_irqrestore(&lu->cmd_orb_lock, flags); } else { /* It's probably status after a management request. */ - if ((sb->ORB_offset_lo == scsi_id->reconnect_orb_dma) || - (sb->ORB_offset_lo == scsi_id->login_orb_dma) || - (sb->ORB_offset_lo == scsi_id->query_logins_orb_dma) || - (sb->ORB_offset_lo == scsi_id->logout_orb_dma)) { - scsi_id->access_complete = 1; + if ((sb->ORB_offset_lo == lu->reconnect_orb_dma) || + (sb->ORB_offset_lo == lu->login_orb_dma) || + (sb->ORB_offset_lo == lu->query_logins_orb_dma) || + (sb->ORB_offset_lo == lu->logout_orb_dma)) { + lu->access_complete = 1; wake_up_interruptible(&sbp2_access_wq); } } if (SCpnt) - sbp2scsi_complete_command(scsi_id, scsi_status, SCpnt, - command->Current_done); + sbp2scsi_complete_command(lu, scsi_status, SCpnt, + cmd->Current_done); return RCODE_COMPLETE; } @@ -1893,15 +1871,14 @@ static int sbp2_handle_status_write(struct hpsb_host *host, int nodeid, static int sbp2scsi_queuecommand(struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *)) { - struct scsi_id_instance_data *scsi_id = - (struct scsi_id_instance_data *)SCpnt->device->host->hostdata[0]; + struct sbp2_lu *lu = (struct sbp2_lu *)SCpnt->device->host->hostdata[0]; struct sbp2_fwhost_info *hi; int result = DID_NO_CONNECT << 16; - if (unlikely(!sbp2util_node_is_available(scsi_id))) + if (unlikely(!sbp2util_node_is_available(lu))) goto done; - hi = scsi_id->hi; + hi = lu->hi; if (unlikely(!hi)) { SBP2_ERR("sbp2_fwhost_info is NULL - this is bad!"); @@ -1916,13 +1893,15 @@ static int sbp2scsi_queuecommand(struct scsi_cmnd *SCpnt, /* handle the request sense command here (auto-request sense) */ if (SCpnt->cmnd[0] == REQUEST_SENSE) { - memcpy(SCpnt->request_buffer, SCpnt->sense_buffer, SCpnt->request_bufflen); + memcpy(SCpnt->request_buffer, SCpnt->sense_buffer, + SCpnt->request_bufflen); memset(SCpnt->sense_buffer, 0, sizeof(SCpnt->sense_buffer)); - sbp2scsi_complete_command(scsi_id, SBP2_SCSI_STATUS_GOOD, SCpnt, done); + sbp2scsi_complete_command(lu, SBP2_SCSI_STATUS_GOOD, SCpnt, + done); return 0; } - if (unlikely(!hpsb_node_entry_valid(scsi_id->ne))) { + if (unlikely(!hpsb_node_entry_valid(lu->ne))) { SBP2_ERR("Bus reset in progress - rejecting command"); result = DID_BUS_BUSY << 16; goto done; @@ -1936,9 +1915,10 @@ static int sbp2scsi_queuecommand(struct scsi_cmnd *SCpnt, goto done; } - if (sbp2_send_command(scsi_id, SCpnt, done)) { + if (sbp2_send_command(lu, SCpnt, done)) { SBP2_ERR("Error sending SCSI command"); - sbp2scsi_complete_command(scsi_id, SBP2_SCSI_STATUS_SELECTION_TIMEOUT, + sbp2scsi_complete_command(lu, + SBP2_SCSI_STATUS_SELECTION_TIMEOUT, SCpnt, done); } return 0; @@ -1949,31 +1929,31 @@ done: return 0; } -static void sbp2scsi_complete_all_commands(struct scsi_id_instance_data *scsi_id, - u32 status) +static void sbp2scsi_complete_all_commands(struct sbp2_lu *lu, u32 status) { - struct sbp2_fwhost_info *hi = scsi_id->hi; + struct sbp2_fwhost_info *hi = lu->hi; struct list_head *lh; - struct sbp2_command_info *command; + struct sbp2_command_info *cmd; unsigned long flags; - spin_lock_irqsave(&scsi_id->cmd_orb_lock, flags); - while (!list_empty(&scsi_id->cmd_orb_inuse)) { - lh = scsi_id->cmd_orb_inuse.next; - command = list_entry(lh, struct sbp2_command_info, list); - pci_dma_sync_single_for_cpu(hi->host->pdev, command->command_orb_dma, - sizeof(struct sbp2_command_orb), - PCI_DMA_TODEVICE); - pci_dma_sync_single_for_cpu(hi->host->pdev, command->sge_dma, - sizeof(command->scatter_gather_element), - PCI_DMA_BIDIRECTIONAL); - sbp2util_mark_command_completed(scsi_id, command); - if (command->Current_SCpnt) { - command->Current_SCpnt->result = status << 16; - command->Current_done(command->Current_SCpnt); + spin_lock_irqsave(&lu->cmd_orb_lock, flags); + while (!list_empty(&lu->cmd_orb_inuse)) { + lh = lu->cmd_orb_inuse.next; + cmd = list_entry(lh, struct sbp2_command_info, list); + pci_dma_sync_single_for_cpu(hi->host->pdev, + cmd->command_orb_dma, + sizeof(struct sbp2_command_orb), + PCI_DMA_TODEVICE); + pci_dma_sync_single_for_cpu(hi->host->pdev, cmd->sge_dma, + sizeof(cmd->scatter_gather_element), + PCI_DMA_BIDIRECTIONAL); + sbp2util_mark_command_completed(lu, cmd); + if (cmd->Current_SCpnt) { + cmd->Current_SCpnt->result = status << 16; + cmd->Current_done(cmd->Current_SCpnt); } } - spin_unlock_irqrestore(&scsi_id->cmd_orb_lock, flags); + spin_unlock_irqrestore(&lu->cmd_orb_lock, flags); return; } @@ -1981,8 +1961,8 @@ static void sbp2scsi_complete_all_commands(struct scsi_id_instance_data *scsi_id /* * Complete a regular SCSI command. Can be called in atomic context. */ -static void sbp2scsi_complete_command(struct scsi_id_instance_data *scsi_id, - u32 scsi_status, struct scsi_cmnd *SCpnt, +static void sbp2scsi_complete_command(struct sbp2_lu *lu, u32 scsi_status, + struct scsi_cmnd *SCpnt, void (*done)(struct scsi_cmnd *)) { if (!SCpnt) { @@ -2025,7 +2005,7 @@ static void sbp2scsi_complete_command(struct scsi_id_instance_data *scsi_id, /* If a bus reset is in progress and there was an error, complete * the command as busy so that it will get retried. */ - if (!hpsb_node_entry_valid(scsi_id->ne) + if (!hpsb_node_entry_valid(lu->ne) && (scsi_status != SBP2_SCSI_STATUS_GOOD)) { SBP2_ERR("Completing command with busy (bus reset)"); SCpnt->result = DID_BUS_BUSY << 16; @@ -2037,36 +2017,34 @@ static void sbp2scsi_complete_command(struct scsi_id_instance_data *scsi_id, static int sbp2scsi_slave_alloc(struct scsi_device *sdev) { - struct scsi_id_instance_data *scsi_id = - (struct scsi_id_instance_data *)sdev->host->hostdata[0]; + struct sbp2_lu *lu = (struct sbp2_lu *)sdev->host->hostdata[0]; - scsi_id->sdev = sdev; + lu->sdev = sdev; sdev->allow_restart = 1; - if (scsi_id->workarounds & SBP2_WORKAROUND_INQUIRY_36) + if (lu->workarounds & SBP2_WORKAROUND_INQUIRY_36) sdev->inquiry_len = 36; return 0; } static int sbp2scsi_slave_configure(struct scsi_device *sdev) { - struct scsi_id_instance_data *scsi_id = - (struct scsi_id_instance_data *)sdev->host->hostdata[0]; + struct sbp2_lu *lu = (struct sbp2_lu *)sdev->host->hostdata[0]; blk_queue_dma_alignment(sdev->request_queue, (512 - 1)); sdev->use_10_for_rw = 1; if (sdev->type == TYPE_DISK && - scsi_id->workarounds & SBP2_WORKAROUND_MODE_SENSE_8) + lu->workarounds & SBP2_WORKAROUND_MODE_SENSE_8) sdev->skip_ms_page_8 = 1; - if (scsi_id->workarounds & SBP2_WORKAROUND_FIX_CAPACITY) + if (lu->workarounds & SBP2_WORKAROUND_FIX_CAPACITY) sdev->fix_capacity = 1; return 0; } static void sbp2scsi_slave_destroy(struct scsi_device *sdev) { - ((struct scsi_id_instance_data *)sdev->host->hostdata[0])->sdev = NULL; + ((struct sbp2_lu *)sdev->host->hostdata[0])->sdev = NULL; return; } @@ -2076,39 +2054,38 @@ static void sbp2scsi_slave_destroy(struct scsi_device *sdev) */ static int sbp2scsi_abort(struct scsi_cmnd *SCpnt) { - struct scsi_id_instance_data *scsi_id = - (struct scsi_id_instance_data *)SCpnt->device->host->hostdata[0]; - struct sbp2_fwhost_info *hi = scsi_id->hi; - struct sbp2_command_info *command; + struct sbp2_lu *lu = (struct sbp2_lu *)SCpnt->device->host->hostdata[0]; + struct sbp2_fwhost_info *hi = lu->hi; + struct sbp2_command_info *cmd; unsigned long flags; SBP2_INFO("aborting sbp2 command"); scsi_print_command(SCpnt); - if (sbp2util_node_is_available(scsi_id)) { - sbp2_agent_reset(scsi_id, 1); + if (sbp2util_node_is_available(lu)) { + sbp2_agent_reset(lu, 1); /* Return a matching command structure to the free pool. */ - spin_lock_irqsave(&scsi_id->cmd_orb_lock, flags); - command = sbp2util_find_command_for_SCpnt(scsi_id, SCpnt); - if (command) { + spin_lock_irqsave(&lu->cmd_orb_lock, flags); + cmd = sbp2util_find_command_for_SCpnt(lu, SCpnt); + if (cmd) { pci_dma_sync_single_for_cpu(hi->host->pdev, - command->command_orb_dma, - sizeof(struct sbp2_command_orb), - PCI_DMA_TODEVICE); + cmd->command_orb_dma, + sizeof(struct sbp2_command_orb), + PCI_DMA_TODEVICE); pci_dma_sync_single_for_cpu(hi->host->pdev, - command->sge_dma, - sizeof(command->scatter_gather_element), - PCI_DMA_BIDIRECTIONAL); - sbp2util_mark_command_completed(scsi_id, command); - if (command->Current_SCpnt) { - command->Current_SCpnt->result = DID_ABORT << 16; - command->Current_done(command->Current_SCpnt); + cmd->sge_dma, + sizeof(cmd->scatter_gather_element), + PCI_DMA_BIDIRECTIONAL); + sbp2util_mark_command_completed(lu, cmd); + if (cmd->Current_SCpnt) { + cmd->Current_SCpnt->result = DID_ABORT << 16; + cmd->Current_done(cmd->Current_SCpnt); } } - spin_unlock_irqrestore(&scsi_id->cmd_orb_lock, flags); + spin_unlock_irqrestore(&lu->cmd_orb_lock, flags); - sbp2scsi_complete_all_commands(scsi_id, DID_BUS_BUSY); + sbp2scsi_complete_all_commands(lu, DID_BUS_BUSY); } return SUCCESS; @@ -2119,14 +2096,13 @@ static int sbp2scsi_abort(struct scsi_cmnd *SCpnt) */ static int sbp2scsi_reset(struct scsi_cmnd *SCpnt) { - struct scsi_id_instance_data *scsi_id = - (struct scsi_id_instance_data *)SCpnt->device->host->hostdata[0]; + struct sbp2_lu *lu = (struct sbp2_lu *)SCpnt->device->host->hostdata[0]; SBP2_INFO("reset requested"); - if (sbp2util_node_is_available(scsi_id)) { + if (sbp2util_node_is_available(lu)) { SBP2_INFO("generating sbp2 fetch agent reset"); - sbp2_agent_reset(scsi_id, 1); + sbp2_agent_reset(lu, 1); } return SUCCESS; @@ -2137,16 +2113,16 @@ static ssize_t sbp2_sysfs_ieee1394_id_show(struct device *dev, char *buf) { struct scsi_device *sdev; - struct scsi_id_instance_data *scsi_id; + struct sbp2_lu *lu; if (!(sdev = to_scsi_device(dev))) return 0; - if (!(scsi_id = (struct scsi_id_instance_data *)sdev->host->hostdata[0])) + if (!(lu = (struct sbp2_lu *)sdev->host->hostdata[0])) return 0; - return sprintf(buf, "%016Lx:%d:%d\n", (unsigned long long)scsi_id->ne->guid, - scsi_id->ud->id, ORB_SET_LUN(scsi_id->lun)); + return sprintf(buf, "%016Lx:%d:%d\n", (unsigned long long)lu->ne->guid, + lu->ud->id, ORB_SET_LUN(lu->lun)); } MODULE_AUTHOR("Ben Collins <bcollins@debian.org>"); diff --git a/drivers/ieee1394/sbp2.h b/drivers/ieee1394/sbp2.h index 8902a46..38ca119 100644 --- a/drivers/ieee1394/sbp2.h +++ b/drivers/ieee1394/sbp2.h @@ -256,7 +256,8 @@ struct sbp2_command_info { void (*Current_done)(struct scsi_cmnd *); /* Also need s/g structure for each sbp2 command */ - struct sbp2_unrestricted_page_table scatter_gather_element[SG_ALL] ____cacheline_aligned; + struct sbp2_unrestricted_page_table + scatter_gather_element[SG_ALL] ____cacheline_aligned; dma_addr_t sge_dma ____cacheline_aligned; void *sge_buffer; dma_addr_t cmd_dma; @@ -268,11 +269,11 @@ struct sbp2_command_info { /* Per FireWire host */ struct sbp2_fwhost_info { struct hpsb_host *host; - struct list_head scsi_ids; + struct list_head logical_units; }; /* Per logical unit */ -struct scsi_id_instance_data { +struct sbp2_lu { /* Operation request blocks */ struct sbp2_command_orb *last_orb; dma_addr_t last_orb_dma; @@ -310,7 +311,7 @@ struct scsi_id_instance_data { /* Backlink to FireWire host; list of units attached to the host */ struct sbp2_fwhost_info *hi; - struct list_head scsi_list; + struct list_head lu_list; /* IEEE 1394 core's device representations */ struct node_entry *ne; @@ -318,7 +319,7 @@ struct scsi_id_instance_data { /* SCSI core's device representations */ struct scsi_device *sdev; - struct Scsi_Host *scsi_host; + struct Scsi_Host *shost; /* Device specific workarounds/brokeness */ unsigned workarounds; @@ -330,14 +331,14 @@ struct scsi_id_instance_data { struct work_struct protocol_work; }; -/* For use in scsi_id_instance_data.state */ +/* For use in sbp2_lu.state */ enum sbp2lu_state_types { SBP2LU_STATE_RUNNING, /* all normal */ SBP2LU_STATE_IN_RESET, /* between bus reset and reconnect */ SBP2LU_STATE_IN_SHUTDOWN /* when sbp2_remove was called */ }; -/* For use in scsi_id_instance_data.workarounds and in the corresponding +/* For use in sbp2_lu.workarounds and in the corresponding * module load parameter */ #define SBP2_WORKAROUND_128K_MAX_TRANS 0x1 #define SBP2_WORKAROUND_INQUIRY_36 0x2 |