From: Michael Cyr <mikecyr@xxxxxxxxxx>
[ Upstream commit 79fac9c9b74f4951c9ce82b22e714bcc34ae4a56 ]
This patch reorders functions in a manner necessary for a follow-on
patch. It also makes some minor styling changes (mostly removing extra
spaces) and fixes some typos.
There are no code changes in this patch, with one exception: due to the
reordering of the functions, I needed to explicitly declare a function
at the top of the file. However, this will be removed in the next patch,
since the code requiring the predeclaration will be removed.
Signed-off-by: Michael Cyr <mikecyr@xxxxxxxxxx>
Signed-off-by: Bryant G. Ly <bryantly@xxxxxxxxxxxxxxxxxx>
Tested-by: Steven Royer <seroyer@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxx>
---
drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c | 796 ++++++++++++++++---------------
1 file changed, 399 insertions(+), 397 deletions(-)
diff --git a/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c b/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c
index e4cd8ff..4feae43 100644
--- a/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c
+++ b/drivers/scsi/ibmvscsi_tgt/ibmvscsi_tgt.c
@@ -22,7 +22,7 @@
*
****************************************************************************/
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
#include <linux/module.h>
#include <linux/kernel.h>
@@ -62,6 +62,8 @@ static long ibmvscsis_parse_command(struct scsi_info *vscsi,
static void ibmvscsis_adapter_idle(struct scsi_info *vscsi);
+static void ibmvscsis_reset_queue(struct scsi_info *vscsi, uint new_state);
+
static void ibmvscsis_determine_resid(struct se_cmd *se_cmd,
struct srp_rsp *rsp)
{
@@ -82,7 +84,7 @@ static void ibmvscsis_determine_resid(struct se_cmd *se_cmd,
}
} else if (se_cmd->se_cmd_flags & SCF_OVERFLOW_BIT) {
if (se_cmd->data_direction == DMA_TO_DEVICE) {
- /* residual data from an overflow write */
+ /* residual data from an overflow write */
rsp->flags = SRP_RSP_FLAG_DOOVER;
rsp->data_out_res_cnt = cpu_to_be32(residual_count);
} else if (se_cmd->data_direction == DMA_FROM_DEVICE) {
@@ -102,7 +104,7 @@ static void ibmvscsis_determine_resid(struct se_cmd *se_cmd,
* and the function returns TRUE.
*
* EXECUTION ENVIRONMENT:
- * Interrupt or Process environment
+ * Interrupt or Process environment
*/
static bool connection_broken(struct scsi_info *vscsi)
{
@@ -325,7 +327,7 @@ static struct viosrp_crq *ibmvscsis_cmd_q_dequeue(uint mask,
}
/**
- * ibmvscsis_send_init_message() - send initialize message to the client
+ * ibmvscsis_send_init_message() - send initialize message to the client
* @vscsi: Pointer to our adapter structure
* @format: Which Init Message format to send
*
@@ -383,13 +385,13 @@ static long ibmvscsis_check_init_msg(struct scsi_info *vscsi, uint *format)
vscsi->cmd_q.base_addr);
if (crq) {
*format = (uint)(crq->format);
- rc = ERROR;
+ rc = ERROR;
crq->valid = INVALIDATE_CMD_RESP_EL;
dma_rmb();
}
} else {
*format = (uint)(crq->format);
- rc = ERROR;
+ rc = ERROR;
crq->valid = INVALIDATE_CMD_RESP_EL;
dma_rmb();
}
@@ -398,166 +400,6 @@ static long ibmvscsis_check_init_msg(struct scsi_info *vscsi, uint *format)
}
/**
- * ibmvscsis_establish_new_q() - Establish new CRQ queue
- * @vscsi: Pointer to our adapter structure
- * @new_state: New state being established after resetting the queue
- *
- * Must be called with interrupt lock held.
- */
-static long ibmvscsis_establish_new_q(struct scsi_info *vscsi, uint new_state)
-{
- long rc = ADAPT_SUCCESS;
- uint format;
-
- vscsi->flags &= PRESERVE_FLAG_FIELDS;
- vscsi->rsp_q_timer.timer_pops = 0;
- vscsi->debit = 0;
- vscsi->credit = 0;
-
- rc = vio_enable_interrupts(vscsi->dma_dev);
- if (rc) {
- pr_warn("reset_queue: failed to enable interrupts, rc %ld\n",
- rc);
- return rc;
- }
-
- rc = ibmvscsis_check_init_msg(vscsi, &format);
- if (rc) {
- dev_err(&vscsi->dev, "reset_queue: check_init_msg failed, rc %ld\n",
- rc);
- return rc;
- }
-
- if (format == UNUSED_FORMAT && new_state == WAIT_CONNECTION) {
- rc = ibmvscsis_send_init_message(vscsi, INIT_MSG);
- switch (rc) {
- case H_SUCCESS:
- case H_DROPPED:
- case H_CLOSED:
- rc = ADAPT_SUCCESS;
- break;
-
- case H_PARAMETER:
- case H_HARDWARE:
- break;
-
- default:
- vscsi->state = UNDEFINED;
- rc = H_HARDWARE;
- break;
- }
- }
-
- return rc;
-}
-
-/**
- * ibmvscsis_reset_queue() - Reset CRQ Queue
- * @vscsi: Pointer to our adapter structure
- * @new_state: New state to establish after resetting the queue
- *
- * This function calls h_free_q and then calls h_reg_q and does all
- * of the bookkeeping to get us back to where we can communicate.
- *
- * Actually, we don't always call h_free_crq. A problem was discovered
- * where one partition would close and reopen his queue, which would
- * cause his partner to get a transport event, which would cause him to
- * close and reopen his queue, which would cause the original partition
- * to get a transport event, etc., etc. To prevent this, we don't
- * actually close our queue if the client initiated the reset, (i.e.
- * either we got a transport event or we have detected that the client's
- * queue is gone)
- *
- * EXECUTION ENVIRONMENT:
- * Process environment, called with interrupt lock held
- */
-static void ibmvscsis_reset_queue(struct scsi_info *vscsi, uint new_state)
-{
- int bytes;
- long rc = ADAPT_SUCCESS;
-
- pr_debug("reset_queue: flags 0x%x\n", vscsi->flags);
-
- /* don't reset, the client did it for us */
- if (vscsi->flags & (CLIENT_FAILED | TRANS_EVENT)) {
- vscsi->flags &= PRESERVE_FLAG_FIELDS;
- vscsi->rsp_q_timer.timer_pops = 0;
- vscsi->debit = 0;
- vscsi->credit = 0;
- vscsi->state = new_state;
- vio_enable_interrupts(vscsi->dma_dev);
- } else {
- rc = ibmvscsis_free_command_q(vscsi);
- if (rc == ADAPT_SUCCESS) {
- vscsi->state = new_state;
-
- bytes = vscsi->cmd_q.size * PAGE_SIZE;
- rc = h_reg_crq(vscsi->dds.unit_id,
- vscsi->cmd_q.crq_token, bytes);
- if (rc == H_CLOSED || rc == H_SUCCESS) {
- rc = ibmvscsis_establish_new_q(vscsi,
- new_state);
- }
-
- if (rc != ADAPT_SUCCESS) {
- pr_debug("reset_queue: reg_crq rc %ld\n", rc);
-
- vscsi->state = ERR_DISCONNECTED;
- vscsi->flags |= RESPONSE_Q_DOWN;
- ibmvscsis_free_command_q(vscsi);
- }
- } else {
- vscsi->state = ERR_DISCONNECTED;
- vscsi->flags |= RESPONSE_Q_DOWN;
- }
- }
-}
-
-/**
- * ibmvscsis_free_cmd_resources() - Free command resources
- * @vscsi: Pointer to our adapter structure
- * @cmd: Command which is not longer in use
- *
- * Must be called with interrupt lock held.
- */
-static void ibmvscsis_free_cmd_resources(struct scsi_info *vscsi,
- struct ibmvscsis_cmd *cmd)
-{
- struct iu_entry *iue = cmd->iue;
-
- switch (cmd->type) {
- case TASK_MANAGEMENT:
- case SCSI_CDB:
- /*
- * When the queue goes down this value is cleared, so it
- * cannot be cleared in this general purpose function.
- */
- if (vscsi->debit)
- vscsi->debit -= 1;
- break;
- case ADAPTER_MAD:
- vscsi->flags &= ~PROCESSING_MAD;
- break;
- case UNSET_TYPE:
- break;
- default:
- dev_err(&vscsi->dev, "free_cmd_resources unknown type %d\n",
- cmd->type);
- break;
- }
-
- cmd->iue = NULL;
- list_add_tail(&cmd->list, &vscsi->free_cmd);
- srp_iu_put(iue);
-
- if (list_empty(&vscsi->active_q) && list_empty(&vscsi->schedule_q) &&
- list_empty(&vscsi->waiting_rsp) && (vscsi->flags & WAIT_FOR_IDLE)) {
- vscsi->flags &= ~WAIT_FOR_IDLE;
- complete(&vscsi->wait_idle);
- }
-}
-
-/**
* ibmvscsis_disconnect() - Helper function to disconnect
* @work: Pointer to work_struct, gives access to our adapter structure
*
@@ -590,7 +432,7 @@ static void ibmvscsis_disconnect(struct work_struct *work)
* should transitition to the new state
*/
switch (vscsi->state) {
- /* Should never be called while in this state. */
+ /* Should never be called while in this state. */
case NO_QUEUE:
/*
* Can never transition from this state;
@@ -726,84 +568,394 @@ static void ibmvscsis_disconnect(struct work_struct *work)
* the new state (if the one passed in is more "severe" than the
* previous one).
*
- * PRECONDITION:
- * interrupt lock is held
+ * PRECONDITION:
+ * interrupt lock is held
+ */
+static void ibmvscsis_post_disconnect(struct scsi_info *vscsi, uint new_state,
+ uint flag_bits)
+{
+ uint state;
+
+ /* check the validity of the new state */
+ switch (new_state) {
+ case UNCONFIGURING:
+ case ERR_DISCONNECT:
+ case ERR_DISCONNECT_RECONNECT:
+ case WAIT_IDLE:
+ break;
+
+ default:
+ dev_err(&vscsi->dev, "post_disconnect: Invalid new state %d\n",
+ new_state);
+ return;
+ }
+
+ vscsi->flags |= flag_bits;
+
+ pr_debug("post_disconnect: new_state 0x%x, flag_bits 0x%x, vscsi->flags 0x%x, state %hx\n",
+ new_state, flag_bits, vscsi->flags, vscsi->state);
+
+ if (!(vscsi->flags & (DISCONNECT_SCHEDULED | SCHEDULE_DISCONNECT))) {
+ vscsi->flags |= SCHEDULE_DISCONNECT;
+ vscsi->new_state = new_state;
+
+ INIT_WORK(&vscsi->proc_work, ibmvscsis_disconnect);
+ (void)queue_work(vscsi->work_q, &vscsi->proc_work);
+ } else {
+ if (vscsi->new_state)
+ state = vscsi->new_state;
+ else
+ state = vscsi->state;
+
+ switch (state) {
+ case NO_QUEUE:
+ case UNCONFIGURING:
+ break;
+
+ case ERR_DISCONNECTED:
+ case ERR_DISCONNECT:
+ case UNDEFINED:
+ if (new_state == UNCONFIGURING)
+ vscsi->new_state = new_state;
+ break;
+
+ case ERR_DISCONNECT_RECONNECT:
+ switch (new_state) {
+ case UNCONFIGURING:
+ case ERR_DISCONNECT:
+ vscsi->new_state = new_state;
+ break;
+ default:
+ break;
+ }
+ break;
+
+ case WAIT_ENABLED:
+ case PART_UP_WAIT_ENAB:
+ case WAIT_IDLE:
+ case WAIT_CONNECTION:
+ case CONNECTED:
+ case SRP_PROCESSING:
+ vscsi->new_state = new_state;
+ break;
+
+ default:
+ break;
+ }
+ }
+
+ pr_debug("Leaving post_disconnect: flags 0x%x, new_state 0x%x\n",
+ vscsi->flags, vscsi->new_state);
+}
+
+/**
+ * ibmvscsis_handle_init_compl_msg() - Respond to an Init Complete Message
+ * @vscsi: Pointer to our adapter structure
+ *
+ * Must be called with interrupt lock held.
+ */
+static long ibmvscsis_handle_init_compl_msg(struct scsi_info *vscsi)
+{
+ long rc = ADAPT_SUCCESS;
+
+ switch (vscsi->state) {
+ case NO_QUEUE:
+ case ERR_DISCONNECT:
+ case ERR_DISCONNECT_RECONNECT:
+ case ERR_DISCONNECTED:
+ case UNCONFIGURING:
+ case UNDEFINED:
+ rc = ERROR;
+ break;
+
+ case WAIT_CONNECTION:
+ vscsi->state = CONNECTED;
+ break;
+
+ case WAIT_IDLE:
+ case SRP_PROCESSING:
+ case CONNECTED:
+ case WAIT_ENABLED:
+ case PART_UP_WAIT_ENAB:
+ default:
+ rc = ERROR;
+ dev_err(&vscsi->dev, "init_msg: invalid state %d to get init compl msg\n",
+ vscsi->state);
+ ibmvscsis_post_disconnect(vscsi, ERR_DISCONNECT_RECONNECT, 0);
+ break;
+ }
+
+ return rc;
+}
+
+/**
+ * ibmvscsis_handle_init_msg() - Respond to an Init Message
+ * @vscsi: Pointer to our adapter structure
+ *
+ * Must be called with interrupt lock held.
+ */
+static long ibmvscsis_handle_init_msg(struct scsi_info *vscsi)
+{
+ long rc = ADAPT_SUCCESS;
+
+ switch (vscsi->state) {
+ case WAIT_ENABLED:
+ vscsi->state = PART_UP_WAIT_ENAB;
+ break;
+
+ case WAIT_CONNECTION:
+ rc = ibmvscsis_send_init_message(vscsi, INIT_COMPLETE_MSG);
+ switch (rc) {
+ case H_SUCCESS:
+ vscsi->state = CONNECTED;
+ break;
+
+ case H_PARAMETER:
+ dev_err(&vscsi->dev, "init_msg: failed to send, rc %ld\n",
+ rc);
+ ibmvscsis_post_disconnect(vscsi, ERR_DISCONNECT, 0);
+ break;
+
+ case H_DROPPED:
+ dev_err(&vscsi->dev, "init_msg: failed to send, rc %ld\n",
+ rc);
+ rc = ERROR;
+ ibmvscsis_post_disconnect(vscsi,
+ ERR_DISCONNECT_RECONNECT, 0);
+ break;
+
+ case H_CLOSED:
+ pr_warn("init_msg: failed to send, rc %ld\n", rc);
+ rc = 0;
+ break;
+ }
+ break;
+
+ case UNDEFINED:
+ rc = ERROR;
+ break;
+
+ case UNCONFIGURING:
+ break;
+
+ case PART_UP_WAIT_ENAB:
+ case CONNECTED:
+ case SRP_PROCESSING:
+ case WAIT_IDLE:
+ case NO_QUEUE:
+ case ERR_DISCONNECT:
+ case ERR_DISCONNECT_RECONNECT:
+ case ERR_DISCONNECTED:
+ default:
+ rc = ERROR;
+ dev_err(&vscsi->dev, "init_msg: invalid state %d to get init msg\n",
+ vscsi->state);
+ ibmvscsis_post_disconnect(vscsi, ERR_DISCONNECT_RECONNECT, 0);
+ break;
+ }
+
+ return rc;
+}
+
+/**
+ * ibmvscsis_init_msg() - Respond to an init message
+ * @vscsi: Pointer to our adapter structure
+ * @crq: Pointer to CRQ element containing the Init Message
+ *
+ * EXECUTION ENVIRONMENT:
+ * Interrupt, interrupt lock held
+ */
+static long ibmvscsis_init_msg(struct scsi_info *vscsi, struct viosrp_crq *crq)
+{
+ long rc = ADAPT_SUCCESS;
+
+ pr_debug("init_msg: state 0x%hx\n", vscsi->state);
+
+ rc = h_vioctl(vscsi->dds.unit_id, H_GET_PARTNER_INFO,
+ (u64)vscsi->map_ioba | ((u64)PAGE_SIZE << 32), 0, 0, 0,
+ 0);
+ if (rc == H_SUCCESS) {
+ vscsi->client_data.partition_number =
+ be64_to_cpu(*(u64 *)vscsi->map_buf);
+ pr_debug("init_msg, part num %d\n",
+ vscsi->client_data.partition_number);
+ } else {
+ pr_debug("init_msg h_vioctl rc %ld\n", rc);
+ rc = ADAPT_SUCCESS;
+ }
+
+ if (crq->format == INIT_MSG) {
+ rc = ibmvscsis_handle_init_msg(vscsi);
+ } else if (crq->format == INIT_COMPLETE_MSG) {
+ rc = ibmvscsis_handle_init_compl_msg(vscsi);
+ } else {
+ rc = ERROR;
+ dev_err(&vscsi->dev, "init_msg: invalid format %d\n",
+ (uint)crq->format);
+ ibmvscsis_post_disconnect(vscsi, ERR_DISCONNECT_RECONNECT, 0);
+ }
+
+ return rc;
+}
+
+/**
+ * ibmvscsis_establish_new_q() - Establish new CRQ queue
+ * @vscsi: Pointer to our adapter structure
+ * @new_state: New state being established after resetting the queue
+ *
+ * Must be called with interrupt lock held.
+ */
+static long ibmvscsis_establish_new_q(struct scsi_info *vscsi, uint new_state)
+{
+ long rc = ADAPT_SUCCESS;
+ uint format;
+
+ vscsi->flags &= PRESERVE_FLAG_FIELDS;
+ vscsi->rsp_q_timer.timer_pops = 0;
+ vscsi->debit = 0;
+ vscsi->credit = 0;
+
+ rc = vio_enable_interrupts(vscsi->dma_dev);
+ if (rc) {
+ pr_warn("reset_queue: failed to enable interrupts, rc %ld\n",
+ rc);
+ return rc;
+ }
+
+ rc = ibmvscsis_check_init_msg(vscsi, &format);
+ if (rc) {
+ dev_err(&vscsi->dev, "reset_queue: check_init_msg failed, rc %ld\n",
+ rc);
+ return rc;
+ }
+
+ if (format == UNUSED_FORMAT && new_state == WAIT_CONNECTION) {
+ rc = ibmvscsis_send_init_message(vscsi, INIT_MSG);
+ switch (rc) {
+ case H_SUCCESS:
+ case H_DROPPED:
+ case H_CLOSED:
+ rc = ADAPT_SUCCESS;
+ break;
+
+ case H_PARAMETER:
+ case H_HARDWARE:
+ break;
+
+ default:
+ vscsi->state = UNDEFINED;
+ rc = H_HARDWARE;
+ break;
+ }
+ }
+
+ return rc;
+}
+
+/**
+ * ibmvscsis_reset_queue() - Reset CRQ Queue
+ * @vscsi: Pointer to our adapter structure
+ * @new_state: New state to establish after resetting the queue
+ *
+ * This function calls h_free_q and then calls h_reg_q and does all
+ * of the bookkeeping to get us back to where we can communicate.
+ *
+ * Actually, we don't always call h_free_crq. A problem was discovered
+ * where one partition would close and reopen his queue, which would
+ * cause his partner to get a transport event, which would cause him to
+ * close and reopen his queue, which would cause the original partition
+ * to get a transport event, etc., etc. To prevent this, we don't
+ * actually close our queue if the client initiated the reset, (i.e.
+ * either we got a transport event or we have detected that the client's
+ * queue is gone)
+ *
+ * EXECUTION ENVIRONMENT:
+ * Process environment, called with interrupt lock held
+ */
+static void ibmvscsis_reset_queue(struct scsi_info *vscsi, uint new_state)
+{
+ int bytes;
+ long rc = ADAPT_SUCCESS;
+
+ pr_debug("reset_queue: flags 0x%x\n", vscsi->flags);
+
+ /* don't reset, the client did it for us */
+ if (vscsi->flags & (CLIENT_FAILED | TRANS_EVENT)) {
+ vscsi->flags &= PRESERVE_FLAG_FIELDS;
+ vscsi->rsp_q_timer.timer_pops = 0;
+ vscsi->debit = 0;
+ vscsi->credit = 0;
+ vscsi->state = new_state;
+ vio_enable_interrupts(vscsi->dma_dev);
+ } else {
+ rc = ibmvscsis_free_command_q(vscsi);
+ if (rc == ADAPT_SUCCESS) {
+ vscsi->state = new_state;
+
+ bytes = vscsi->cmd_q.size * PAGE_SIZE;
+ rc = h_reg_crq(vscsi->dds.unit_id,
+ vscsi->cmd_q.crq_token, bytes);
+ if (rc == H_CLOSED || rc == H_SUCCESS) {
+ rc = ibmvscsis_establish_new_q(vscsi,
+ new_state);
+ }
+
+ if (rc != ADAPT_SUCCESS) {
+ pr_debug("reset_queue: reg_crq rc %ld\n", rc);
+
+ vscsi->state = ERR_DISCONNECTED;
+ vscsi->flags |= RESPONSE_Q_DOWN;
+ ibmvscsis_free_command_q(vscsi);
+ }
+ } else {
+ vscsi->state = ERR_DISCONNECTED;
+ vscsi->flags |= RESPONSE_Q_DOWN;
+ }
+ }
+}
+
+/**
+ * ibmvscsis_free_cmd_resources() - Free command resources
+ * @vscsi: Pointer to our adapter structure
+ * @cmd: Command which is not longer in use
+ *
+ * Must be called with interrupt lock held.
*/
-static void ibmvscsis_post_disconnect(struct scsi_info *vscsi, uint new_state,
- uint flag_bits)
+static void ibmvscsis_free_cmd_resources(struct scsi_info *vscsi,
+ struct ibmvscsis_cmd *cmd)
{
- uint state;
+ struct iu_entry *iue = cmd->iue;
- /* check the validity of the new state */
- switch (new_state) {
- case UNCONFIGURING:
- case ERR_DISCONNECT:
- case ERR_DISCONNECT_RECONNECT:
- case WAIT_IDLE:
+ switch (cmd->type) {
+ case TASK_MANAGEMENT:
+ case SCSI_CDB:
+ /*
+ * When the queue goes down this value is cleared, so it
+ * cannot be cleared in this general purpose function.
+ */
+ if (vscsi->debit)
+ vscsi->debit -= 1;
+ break;
+ case ADAPTER_MAD:
+ vscsi->flags &= ~PROCESSING_MAD;
+ break;
+ case UNSET_TYPE:
break;
-
default:
- dev_err(&vscsi->dev, "post_disconnect: Invalid new state %d\n",
- new_state);
- return;
+ dev_err(&vscsi->dev, "free_cmd_resources unknown type %d\n",
+ cmd->type);
+ break;
}
- vscsi->flags |= flag_bits;
-
- pr_debug("post_disconnect: new_state 0x%x, flag_bits 0x%x, vscsi->flags 0x%x, state %hx\n",
- new_state, flag_bits, vscsi->flags, vscsi->state);
-
- if (!(vscsi->flags & (DISCONNECT_SCHEDULED | SCHEDULE_DISCONNECT))) {
- vscsi->flags |= SCHEDULE_DISCONNECT;
- vscsi->new_state = new_state;
-
- INIT_WORK(&vscsi->proc_work, ibmvscsis_disconnect);
- (void)queue_work(vscsi->work_q, &vscsi->proc_work);
- } else {
- if (vscsi->new_state)
- state = vscsi->new_state;
- else
- state = vscsi->state;
-
- switch (state) {
- case NO_QUEUE:
- case UNCONFIGURING:
- break;
-
- case ERR_DISCONNECTED:
- case ERR_DISCONNECT:
- case UNDEFINED:
- if (new_state == UNCONFIGURING)
- vscsi->new_state = new_state;
- break;
-
- case ERR_DISCONNECT_RECONNECT:
- switch (new_state) {
- case UNCONFIGURING:
- case ERR_DISCONNECT:
- vscsi->new_state = new_state;
- break;
- default:
- break;
- }
- break;
-
- case WAIT_ENABLED:
- case PART_UP_WAIT_ENAB:
- case WAIT_IDLE:
- case WAIT_CONNECTION:
- case CONNECTED:
- case SRP_PROCESSING:
- vscsi->new_state = new_state;
- break;
+ cmd->iue = NULL;
+ list_add_tail(&cmd->list, &vscsi->free_cmd);
+ srp_iu_put(iue);
- default:
- break;
- }
+ if (list_empty(&vscsi->active_q) && list_empty(&vscsi->schedule_q) &&
+ list_empty(&vscsi->waiting_rsp) && (vscsi->flags & WAIT_FOR_IDLE)) {
+ vscsi->flags &= ~WAIT_FOR_IDLE;
+ complete(&vscsi->wait_idle);
}
-
- pr_debug("Leaving post_disconnect: flags 0x%x, new_state 0x%x\n",
- vscsi->flags, vscsi->new_state);
}
/**
@@ -896,7 +1048,7 @@ static long ibmvscsis_trans_event(struct scsi_info *vscsi,
}
}
- rc = vscsi->flags & SCHEDULE_DISCONNECT;
+ rc = vscsi->flags & SCHEDULE_DISCONNECT;
pr_debug("Leaving trans_event: flags 0x%x, state 0x%hx, rc %ld\n",
vscsi->flags, vscsi->state, rc);
@@ -1221,7 +1373,7 @@ static long ibmvscsis_copy_crq_packet(struct scsi_info *vscsi,
* @iue: Information Unit containing the Adapter Info MAD request
*
* EXECUTION ENVIRONMENT:
- * Interrupt adpater lock is held
+ * Interrupt adapter lock is held
*/
static long ibmvscsis_adapter_info(struct scsi_info *vscsi,
struct iu_entry *iue)
@@ -1692,7 +1844,7 @@ static void ibmvscsis_send_mad_resp(struct scsi_info *vscsi,
* @crq: Pointer to the CRQ entry containing the MAD request
*
* EXECUTION ENVIRONMENT:
- * Interrupt called with adapter lock held
+ * Interrupt, called with adapter lock held
*/
static long ibmvscsis_mad(struct scsi_info *vscsi, struct viosrp_crq *crq)
{
@@ -1858,7 +2010,7 @@ static long ibmvscsis_srp_login_rej(struct scsi_info *vscsi,
break;
case H_PERMISSION:
if (connection_broken(vscsi))
- flag_bits = RESPONSE_Q_DOWN | CLIENT_FAILED;
+ flag_bits = RESPONSE_Q_DOWN | CLIENT_FAILED;
dev_err(&vscsi->dev, "login_rej: error copying to client, rc %ld\n",
rc);
ibmvscsis_post_disconnect(vscsi, ERR_DISCONNECT_RECONNECT,
@@ -2181,156 +2333,6 @@ static long ibmvscsis_ping_response(struct scsi_info *vscsi)
}
/**
- * ibmvscsis_handle_init_compl_msg() - Respond to an Init Complete Message
- * @vscsi: Pointer to our adapter structure
- *
- * Must be called with interrupt lock held.
- */
-static long ibmvscsis_handle_init_compl_msg(struct scsi_info *vscsi)
-{
- long rc = ADAPT_SUCCESS;
-
- switch (vscsi->state) {
- case NO_QUEUE:
- case ERR_DISCONNECT:
- case ERR_DISCONNECT_RECONNECT:
- case ERR_DISCONNECTED:
- case UNCONFIGURING:
- case UNDEFINED:
- rc = ERROR;
- break;
-
- case WAIT_CONNECTION:
- vscsi->state = CONNECTED;
- break;
-
- case WAIT_IDLE:
- case SRP_PROCESSING:
- case CONNECTED:
- case WAIT_ENABLED:
- case PART_UP_WAIT_ENAB:
- default:
- rc = ERROR;
- dev_err(&vscsi->dev, "init_msg: invalid state %d to get init compl msg\n",
- vscsi->state);
- ibmvscsis_post_disconnect(vscsi, ERR_DISCONNECT_RECONNECT, 0);
- break;
- }
-
- return rc;
-}
-
-/**
- * ibmvscsis_handle_init_msg() - Respond to an Init Message
- * @vscsi: Pointer to our adapter structure
- *
- * Must be called with interrupt lock held.
- */
-static long ibmvscsis_handle_init_msg(struct scsi_info *vscsi)
-{
- long rc = ADAPT_SUCCESS;
-
- switch (vscsi->state) {
- case WAIT_ENABLED:
- vscsi->state = PART_UP_WAIT_ENAB;
- break;
-
- case WAIT_CONNECTION:
- rc = ibmvscsis_send_init_message(vscsi, INIT_COMPLETE_MSG);
- switch (rc) {
- case H_SUCCESS:
- vscsi->state = CONNECTED;
- break;
-
- case H_PARAMETER:
- dev_err(&vscsi->dev, "init_msg: failed to send, rc %ld\n",
- rc);
- ibmvscsis_post_disconnect(vscsi, ERR_DISCONNECT, 0);
- break;
-
- case H_DROPPED:
- dev_err(&vscsi->dev, "init_msg: failed to send, rc %ld\n",
- rc);
- rc = ERROR;
- ibmvscsis_post_disconnect(vscsi,
- ERR_DISCONNECT_RECONNECT, 0);
- break;
-
- case H_CLOSED:
- pr_warn("init_msg: failed to send, rc %ld\n", rc);
- rc = 0;
- break;
- }
- break;
-
- case UNDEFINED:
- rc = ERROR;
- break;
-
- case UNCONFIGURING:
- break;
-
- case PART_UP_WAIT_ENAB:
- case CONNECTED:
- case SRP_PROCESSING:
- case WAIT_IDLE:
- case NO_QUEUE:
- case ERR_DISCONNECT:
- case ERR_DISCONNECT_RECONNECT:
- case ERR_DISCONNECTED:
- default:
- rc = ERROR;
- dev_err(&vscsi->dev, "init_msg: invalid state %d to get init msg\n",
- vscsi->state);
- ibmvscsis_post_disconnect(vscsi, ERR_DISCONNECT_RECONNECT, 0);
- break;
- }
-
- return rc;
-}
-
-/**
- * ibmvscsis_init_msg() - Respond to an init message
- * @vscsi: Pointer to our adapter structure
- * @crq: Pointer to CRQ element containing the Init Message
- *
- * EXECUTION ENVIRONMENT:
- * Interrupt, interrupt lock held
- */
-static long ibmvscsis_init_msg(struct scsi_info *vscsi, struct viosrp_crq *crq)
-{
- long rc = ADAPT_SUCCESS;
-
- pr_debug("init_msg: state 0x%hx\n", vscsi->state);
-
- rc = h_vioctl(vscsi->dds.unit_id, H_GET_PARTNER_INFO,
- (u64)vscsi->map_ioba | ((u64)PAGE_SIZE << 32), 0, 0, 0,
- 0);
- if (rc == H_SUCCESS) {
- vscsi->client_data.partition_number =
- be64_to_cpu(*(u64 *)vscsi->map_buf);
- pr_debug("init_msg, part num %d\n",
- vscsi->client_data.partition_number);
- } else {
- pr_debug("init_msg h_vioctl rc %ld\n", rc);
- rc = ADAPT_SUCCESS;
- }
-
- if (crq->format == INIT_MSG) {
- rc = ibmvscsis_handle_init_msg(vscsi);
- } else if (crq->format == INIT_COMPLETE_MSG) {
- rc = ibmvscsis_handle_init_compl_msg(vscsi);
- } else {
- rc = ERROR;
- dev_err(&vscsi->dev, "init_msg: invalid format %d\n",
- (uint)crq->format);
- ibmvscsis_post_disconnect(vscsi, ERR_DISCONNECT_RECONNECT, 0);
- }
-
- return rc;
-}
-
-/**
* ibmvscsis_parse_command() - Parse an element taken from the cmd rsp queue.
* @vscsi: Pointer to our adapter structure
* @crq: Pointer to CRQ element containing the SRP request
@@ -2385,7 +2387,7 @@ static long ibmvscsis_parse_command(struct scsi_info *vscsi,
break;
case VALID_TRANS_EVENT:
- rc = ibmvscsis_trans_event(vscsi, crq);
+ rc = ibmvscsis_trans_event(vscsi, crq);
break;
case VALID_INIT_MSG:
@@ -3270,7 +3272,7 @@ static void ibmvscsis_handle_crq(unsigned long data)
/*
* if we are in a path where we are waiting for all pending commands
* to complete because we received a transport event and anything in
- * the command queue is for a new connection, do nothing
+ * the command queue is for a new connection, do nothing
*/
if (TARGET_STOP(vscsi)) {
vio_enable_interrupts(vscsi->dma_dev);
@@ -3314,7 +3316,7 @@ static void ibmvscsis_handle_crq(unsigned long data)
* everything but transport events on the queue
*
* need to decrement the queue index so we can
- * look at the elment again
+ * look at the element again
*/
if (vscsi->cmd_q.index)
vscsi->cmd_q.index -= 1;
@@ -3988,10 +3990,10 @@ static struct attribute *ibmvscsis_dev_attrs[] = {
ATTRIBUTE_GROUPS(ibmvscsis_dev);
static struct class ibmvscsis_class = {
- .name = "ibmvscsis",
- .dev_release = ibmvscsis_dev_release,
- .class_attrs = ibmvscsis_class_attrs,
- .dev_groups = ibmvscsis_dev_groups,
+ .name = "ibmvscsis",
+ .dev_release = ibmvscsis_dev_release,
+ .class_attrs = ibmvscsis_class_attrs,
+ .dev_groups = ibmvscsis_dev_groups,
};
static struct vio_device_id ibmvscsis_device_table[] = {
--
2.9.3