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Commit 138c8af8 authored by Stefan Richter's avatar Stefan Richter
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ieee1394: sbp2: more concise names for types and variables 

"struct scsi_id_instance_data" represents a logical unit.
Rename it to "struct sbp2_lu", and "scsi_id" to "lu".
Rename some other variables too.
Wrap almost all lines after at most 80 columns.
Signed-off-by: default avatarStefan Richter <stefanr@s5r6.in-berlin.de>
parent 9117c6dc
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Showing with 575 additions and 598 deletions
drivers/ieee1394/sbp2.c
View file @ 138c8af8
......@@ -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 @@ static int sbp2scsi_queuecommand(struct scsi_cmnd *SCpnt,
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>");
......
drivers/ieee1394/sbp2.h
View file @ 138c8af8
......@@ -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
......
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