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-rw-r--r--drivers/scsi/aacraid/aachba.c2
-rw-r--r--drivers/scsi/gdth.c60
-rw-r--r--drivers/scsi/gdth.h2
-rw-r--r--drivers/scsi/gdth_proc.c66
-rw-r--r--drivers/scsi/gdth_proc.h3
-rw-r--r--drivers/scsi/ibmvscsi/ibmvscsi.c2
-rw-r--r--drivers/scsi/ide-scsi.c2
-rw-r--r--drivers/scsi/ipr.c3
-rw-r--r--drivers/scsi/ips.c2
-rw-r--r--drivers/scsi/libiscsi.c17
-rw-r--r--drivers/scsi/libsas/sas_ata.c10
-rw-r--r--drivers/scsi/libsas/sas_internal.h2
-rw-r--r--drivers/scsi/libsas/sas_scsi_host.c30
-rw-r--r--drivers/scsi/megaraid/megaraid_sas.c6
-rw-r--r--drivers/scsi/ncr53c8xx.c4
-rw-r--r--drivers/scsi/qla1280.c4
-rw-r--r--drivers/scsi/qla4xxx/ql4_os.c4
-rw-r--r--drivers/scsi/scsi.c92
-rw-r--r--drivers/scsi/scsi_error.c90
-rw-r--r--drivers/scsi/scsi_lib.c17
-rw-r--r--drivers/scsi/scsi_priv.h7
-rw-r--r--drivers/scsi/scsi_sysfs.c7
-rw-r--r--drivers/scsi/scsi_tgt_lib.c2
-rw-r--r--drivers/scsi/scsi_transport_fc.c6
-rw-r--r--drivers/scsi/sd.c95
-rw-r--r--drivers/scsi/sg.c667
-rw-r--r--drivers/scsi/sr.c7
-rw-r--r--drivers/scsi/sym53c8xx_2/sym_glue.c4
28 files changed, 368 insertions, 845 deletions
diff --git a/drivers/scsi/aacraid/aachba.c b/drivers/scsi/aacraid/aachba.c
index aa4e77c2527..8abfd06b5a7 100644
--- a/drivers/scsi/aacraid/aachba.c
+++ b/drivers/scsi/aacraid/aachba.c
@@ -1139,7 +1139,7 @@ static struct aac_srb * aac_scsi_common(struct fib * fib, struct scsi_cmnd * cmd
srbcmd->id = cpu_to_le32(scmd_id(cmd));
srbcmd->lun = cpu_to_le32(cmd->device->lun);
srbcmd->flags = cpu_to_le32(flag);
- timeout = cmd->timeout_per_command/HZ;
+ timeout = cmd->request->timeout/HZ;
if (timeout == 0)
timeout = 1;
srbcmd->timeout = cpu_to_le32(timeout); // timeout in seconds
diff --git a/drivers/scsi/gdth.c b/drivers/scsi/gdth.c
index 822d5214692..c387c15a212 100644
--- a/drivers/scsi/gdth.c
+++ b/drivers/scsi/gdth.c
@@ -464,7 +464,6 @@ int __gdth_execute(struct scsi_device *sdev, gdth_cmd_str *gdtcmd, char *cmnd,
/* use request field to save the ptr. to completion struct. */
scp->request = (struct request *)&wait;
- scp->timeout_per_command = timeout*HZ;
scp->cmd_len = 12;
scp->cmnd = cmnd;
cmndinfo.priority = IOCTL_PRI;
@@ -1995,23 +1994,12 @@ static void gdth_putq(gdth_ha_str *ha, Scsi_Cmnd *scp, unchar priority)
register Scsi_Cmnd *pscp;
register Scsi_Cmnd *nscp;
ulong flags;
- unchar b, t;
TRACE(("gdth_putq() priority %d\n",priority));
spin_lock_irqsave(&ha->smp_lock, flags);
- if (!cmndinfo->internal_command) {
+ if (!cmndinfo->internal_command)
cmndinfo->priority = priority;
- b = scp->device->channel;
- t = scp->device->id;
- if (priority >= DEFAULT_PRI) {
- if ((b != ha->virt_bus && ha->raw[BUS_L2P(ha,b)].lock) ||
- (b==ha->virt_bus && t<MAX_HDRIVES && ha->hdr[t].lock)) {
- TRACE2(("gdth_putq(): locked IO ->update_timeout()\n"));
- cmndinfo->timeout = gdth_update_timeout(scp, 0);
- }
- }
- }
if (ha->req_first==NULL) {
ha->req_first = scp; /* queue was empty */
@@ -3899,6 +3887,39 @@ static const char *gdth_info(struct Scsi_Host *shp)
return ((const char *)ha->binfo.type_string);
}
+static enum blk_eh_timer_return gdth_timed_out(struct scsi_cmnd *scp)
+{
+ gdth_ha_str *ha = shost_priv(scp->device->host);
+ struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
+ unchar b, t;
+ ulong flags;
+ enum blk_eh_timer_return retval = BLK_EH_NOT_HANDLED;
+
+ TRACE(("%s() cmd 0x%x\n", scp->cmnd[0], __func__));
+ b = scp->device->channel;
+ t = scp->device->id;
+
+ /*
+ * We don't really honor the command timeout, but we try to
+ * honor 6 times of the actual command timeout! So reset the
+ * timer if this is less than 6th timeout on this command!
+ */
+ if (++cmndinfo->timeout_count < 6)
+ retval = BLK_EH_RESET_TIMER;
+
+ /* Reset the timeout if it is locked IO */
+ spin_lock_irqsave(&ha->smp_lock, flags);
+ if ((b != ha->virt_bus && ha->raw[BUS_L2P(ha, b)].lock) ||
+ (b == ha->virt_bus && t < MAX_HDRIVES && ha->hdr[t].lock)) {
+ TRACE2(("%s(): locked IO, reset timeout\n", __func__));
+ retval = BLK_EH_RESET_TIMER;
+ }
+ spin_unlock_irqrestore(&ha->smp_lock, flags);
+
+ return retval;
+}
+
+
static int gdth_eh_bus_reset(Scsi_Cmnd *scp)
{
gdth_ha_str *ha = shost_priv(scp->device->host);
@@ -3992,7 +4013,7 @@ static int gdth_queuecommand(struct scsi_cmnd *scp,
BUG_ON(!cmndinfo);
scp->scsi_done = done;
- gdth_update_timeout(scp, scp->timeout_per_command * 6);
+ cmndinfo->timeout_count = 0;
cmndinfo->priority = DEFAULT_PRI;
return __gdth_queuecommand(ha, scp, cmndinfo);
@@ -4096,12 +4117,10 @@ static int ioc_lockdrv(void __user *arg)
ha->hdr[j].lock = 1;
spin_unlock_irqrestore(&ha->smp_lock, flags);
gdth_wait_completion(ha, ha->bus_cnt, j);
- gdth_stop_timeout(ha, ha->bus_cnt, j);
} else {
spin_lock_irqsave(&ha->smp_lock, flags);
ha->hdr[j].lock = 0;
spin_unlock_irqrestore(&ha->smp_lock, flags);
- gdth_start_timeout(ha, ha->bus_cnt, j);
gdth_next(ha);
}
}
@@ -4539,18 +4558,14 @@ static int gdth_ioctl(struct inode *inode, struct file *filep,
spin_lock_irqsave(&ha->smp_lock, flags);
ha->raw[i].lock = 1;
spin_unlock_irqrestore(&ha->smp_lock, flags);
- for (j = 0; j < ha->tid_cnt; ++j) {
+ for (j = 0; j < ha->tid_cnt; ++j)
gdth_wait_completion(ha, i, j);
- gdth_stop_timeout(ha, i, j);
- }
} else {
spin_lock_irqsave(&ha->smp_lock, flags);
ha->raw[i].lock = 0;
spin_unlock_irqrestore(&ha->smp_lock, flags);
- for (j = 0; j < ha->tid_cnt; ++j) {
- gdth_start_timeout(ha, i, j);
+ for (j = 0; j < ha->tid_cnt; ++j)
gdth_next(ha);
- }
}
}
break;
@@ -4644,6 +4659,7 @@ static struct scsi_host_template gdth_template = {
.slave_configure = gdth_slave_configure,
.bios_param = gdth_bios_param,
.proc_info = gdth_proc_info,
+ .eh_timed_out = gdth_timed_out,
.proc_name = "gdth",
.can_queue = GDTH_MAXCMDS,
.this_id = -1,
diff --git a/drivers/scsi/gdth.h b/drivers/scsi/gdth.h
index ca92476727c..1646444e9bd 100644
--- a/drivers/scsi/gdth.h
+++ b/drivers/scsi/gdth.h
@@ -916,7 +916,7 @@ typedef struct {
gdth_cmd_str *internal_cmd_str; /* crier for internal messages*/
dma_addr_t sense_paddr; /* sense dma-addr */
unchar priority;
- int timeout;
+ int timeout_count; /* # of timeout calls */
volatile int wait_for_completion;
ushort status;
ulong32 info;
diff --git a/drivers/scsi/gdth_proc.c b/drivers/scsi/gdth_proc.c
index ce0228e26ae..59349a316e1 100644
--- a/drivers/scsi/gdth_proc.c
+++ b/drivers/scsi/gdth_proc.c
@@ -748,69 +748,3 @@ static void gdth_wait_completion(gdth_ha_str *ha, int busnum, int id)
}
spin_unlock_irqrestore(&ha->smp_lock, flags);
}
-
-static void gdth_stop_timeout(gdth_ha_str *ha, int busnum, int id)
-{
- ulong flags;
- Scsi_Cmnd *scp;
- unchar b, t;
-
- spin_lock_irqsave(&ha->smp_lock, flags);
-
- for (scp = ha->req_first; scp; scp = (Scsi_Cmnd *)scp->SCp.ptr) {
- struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
- if (!cmndinfo->internal_command) {
- b = scp->device->channel;
- t = scp->device->id;
- if (t == (unchar)id && b == (unchar)busnum) {
- TRACE2(("gdth_stop_timeout(): update_timeout()\n"));
- cmndinfo->timeout = gdth_update_timeout(scp, 0);
- }
- }
- }
- spin_unlock_irqrestore(&ha->smp_lock, flags);
-}
-
-static void gdth_start_timeout(gdth_ha_str *ha, int busnum, int id)
-{
- ulong flags;
- Scsi_Cmnd *scp;
- unchar b, t;
-
- spin_lock_irqsave(&ha->smp_lock, flags);
-
- for (scp = ha->req_first; scp; scp = (Scsi_Cmnd *)scp->SCp.ptr) {
- struct gdth_cmndinfo *cmndinfo = gdth_cmnd_priv(scp);
- if (!cmndinfo->internal_command) {
- b = scp->device->channel;
- t = scp->device->id;
- if (t == (unchar)id && b == (unchar)busnum) {
- TRACE2(("gdth_start_timeout(): update_timeout()\n"));
- gdth_update_timeout(scp, cmndinfo->timeout);
- }
- }
- }
- spin_unlock_irqrestore(&ha->smp_lock, flags);
-}
-
-static int gdth_update_timeout(Scsi_Cmnd *scp, int timeout)
-{
- int oldto;
-
- oldto = scp->timeout_per_command;
- scp->timeout_per_command = timeout;
-
- if (timeout == 0) {
- del_timer(&scp->eh_timeout);
- scp->eh_timeout.data = (unsigned long) NULL;
- scp->eh_timeout.expires = 0;
- } else {
- if (scp->eh_timeout.data != (unsigned long) NULL)
- del_timer(&scp->eh_timeout);
- scp->eh_timeout.data = (unsigned long) scp;
- scp->eh_timeout.expires = jiffies + timeout;
- add_timer(&scp->eh_timeout);
- }
-
- return oldto;
-}
diff --git a/drivers/scsi/gdth_proc.h b/drivers/scsi/gdth_proc.h
index 45e6fdacf36..9b900cc9ebe 100644
--- a/drivers/scsi/gdth_proc.h
+++ b/drivers/scsi/gdth_proc.h
@@ -20,9 +20,6 @@ static char *gdth_ioctl_alloc(gdth_ha_str *ha, int size, int scratch,
ulong64 *paddr);
static void gdth_ioctl_free(gdth_ha_str *ha, int size, char *buf, ulong64 paddr);
static void gdth_wait_completion(gdth_ha_str *ha, int busnum, int id);
-static void gdth_stop_timeout(gdth_ha_str *ha, int busnum, int id);
-static void gdth_start_timeout(gdth_ha_str *ha, int busnum, int id);
-static int gdth_update_timeout(Scsi_Cmnd *scp, int timeout);
#endif
diff --git a/drivers/scsi/ibmvscsi/ibmvscsi.c b/drivers/scsi/ibmvscsi/ibmvscsi.c
index 7b1502c0ab6..87e09f35d3d 100644
--- a/drivers/scsi/ibmvscsi/ibmvscsi.c
+++ b/drivers/scsi/ibmvscsi/ibmvscsi.c
@@ -756,7 +756,7 @@ static int ibmvscsi_queuecommand(struct scsi_cmnd *cmnd,
init_event_struct(evt_struct,
handle_cmd_rsp,
VIOSRP_SRP_FORMAT,
- cmnd->timeout_per_command/HZ);
+ cmnd->request->timeout/HZ);
evt_struct->cmnd = cmnd;
evt_struct->cmnd_done = done;
diff --git a/drivers/scsi/ide-scsi.c b/drivers/scsi/ide-scsi.c
index 461331d3dc4..81c16cba541 100644
--- a/drivers/scsi/ide-scsi.c
+++ b/drivers/scsi/ide-scsi.c
@@ -612,7 +612,7 @@ static int idescsi_queue (struct scsi_cmnd *cmd,
pc->req_xfer = pc->buf_size = scsi_bufflen(cmd);
pc->scsi_cmd = cmd;
pc->done = done;
- pc->timeout = jiffies + cmd->timeout_per_command;
+ pc->timeout = jiffies + cmd->request->timeout;
if (test_bit(IDESCSI_LOG_CMD, &scsi->log)) {
printk ("ide-scsi: %s: que %lu, cmd = ", drive->name, cmd->serial_number);
diff --git a/drivers/scsi/ipr.c b/drivers/scsi/ipr.c
index e7a3a655442..d30eb7ba018 100644
--- a/drivers/scsi/ipr.c
+++ b/drivers/scsi/ipr.c
@@ -3670,7 +3670,8 @@ static int ipr_slave_configure(struct scsi_device *sdev)
sdev->no_uld_attach = 1;
}
if (ipr_is_vset_device(res)) {
- sdev->timeout = IPR_VSET_RW_TIMEOUT;
+ blk_queue_rq_timeout(sdev->request_queue,
+ IPR_VSET_RW_TIMEOUT);
blk_queue_max_sectors(sdev->request_queue, IPR_VSET_MAX_SECTORS);
}
if (ipr_is_vset_device(res) || ipr_is_scsi_disk(res))
diff --git a/drivers/scsi/ips.c b/drivers/scsi/ips.c
index bc9e6ddf41d..ef683f0d2b5 100644
--- a/drivers/scsi/ips.c
+++ b/drivers/scsi/ips.c
@@ -3818,7 +3818,7 @@ ips_send_cmd(ips_ha_t * ha, ips_scb_t * scb)
scb->cmd.dcdb.segment_4G = 0;
scb->cmd.dcdb.enhanced_sg = 0;
- TimeOut = scb->scsi_cmd->timeout_per_command;
+ TimeOut = scb->scsi_cmd->request->timeout;
if (ha->subsys->param[4] & 0x00100000) { /* If NEW Tape DCDB is Supported */
if (!scb->sg_len) {
diff --git a/drivers/scsi/libiscsi.c b/drivers/scsi/libiscsi.c
index 0b7457d558f..da7b67d30d9 100644
--- a/drivers/scsi/libiscsi.c
+++ b/drivers/scsi/libiscsi.c
@@ -1476,12 +1476,12 @@ static void iscsi_start_tx(struct iscsi_conn *conn)
scsi_queue_work(conn->session->host, &conn->xmitwork);
}
-static enum scsi_eh_timer_return iscsi_eh_cmd_timed_out(struct scsi_cmnd *scmd)
+static enum blk_eh_timer_return iscsi_eh_cmd_timed_out(struct scsi_cmnd *scmd)
{
struct iscsi_cls_session *cls_session;
struct iscsi_session *session;
struct iscsi_conn *conn;
- enum scsi_eh_timer_return rc = EH_NOT_HANDLED;
+ enum blk_eh_timer_return rc = BLK_EH_NOT_HANDLED;
cls_session = starget_to_session(scsi_target(scmd->device));
session = cls_session->dd_data;
@@ -1494,14 +1494,14 @@ static enum scsi_eh_timer_return iscsi_eh_cmd_timed_out(struct scsi_cmnd *scmd)
* We are probably in the middle of iscsi recovery so let
* that complete and handle the error.
*/
- rc = EH_RESET_TIMER;
+ rc = BLK_EH_RESET_TIMER;
goto done;
}
conn = session->leadconn;
if (!conn) {
/* In the middle of shuting down */
- rc = EH_RESET_TIMER;
+ rc = BLK_EH_RESET_TIMER;
goto done;
}
@@ -1513,20 +1513,21 @@ static enum scsi_eh_timer_return iscsi_eh_cmd_timed_out(struct scsi_cmnd *scmd)
*/
if (time_before_eq(conn->last_recv + (conn->recv_timeout * HZ) +
(conn->ping_timeout * HZ), jiffies))
- rc = EH_RESET_TIMER;
+ rc = BLK_EH_RESET_TIMER;
/*
* if we are about to check the transport then give the command
* more time
*/
if (time_before_eq(conn->last_recv + (conn->recv_timeout * HZ),
jiffies))
- rc = EH_RESET_TIMER;
+ rc = BLK_EH_RESET_TIMER;
/* if in the middle of checking the transport then give us more time */
if (conn->ping_task)
- rc = EH_RESET_TIMER;
+ rc = BLK_EH_RESET_TIMER;
done:
spin_unlock(&session->lock);
- debug_scsi("return %s\n", rc == EH_RESET_TIMER ? "timer reset" : "nh");
+ debug_scsi("return %s\n", rc == BLK_EH_RESET_TIMER ?
+ "timer reset" : "nh");
return rc;
}
diff --git a/drivers/scsi/libsas/sas_ata.c b/drivers/scsi/libsas/sas_ata.c
index 48ee8c7f5bd..e1550117069 100644
--- a/drivers/scsi/libsas/sas_ata.c
+++ b/drivers/scsi/libsas/sas_ata.c
@@ -294,10 +294,10 @@ static void sas_ata_post_internal(struct ata_queued_cmd *qc)
}
}
-static int sas_ata_scr_write(struct ata_port *ap, unsigned int sc_reg_in,
+static int sas_ata_scr_write(struct ata_link *link, unsigned int sc_reg_in,
u32 val)
{
- struct domain_device *dev = ap->private_data;
+ struct domain_device *dev = link->ap->private_data;
SAS_DPRINTK("STUB %s\n", __func__);
switch (sc_reg_in) {
@@ -319,10 +319,10 @@ static int sas_ata_scr_write(struct ata_port *ap, unsigned int sc_reg_in,
return 0;
}
-static int sas_ata_scr_read(struct ata_port *ap, unsigned int sc_reg_in,
+static int sas_ata_scr_read(struct ata_link *link, unsigned int sc_reg_in,
u32 *val)
{
- struct domain_device *dev = ap->private_data;
+ struct domain_device *dev = link->ap->private_data;
SAS_DPRINTK("STUB %s\n", __func__);
switch (sc_reg_in) {
@@ -398,7 +398,7 @@ void sas_ata_task_abort(struct sas_task *task)
/* Bounce SCSI-initiated commands to the SCSI EH */
if (qc->scsicmd) {
- scsi_req_abort_cmd(qc->scsicmd);
+ blk_abort_request(qc->scsicmd->request);
scsi_schedule_eh(qc->scsicmd->device->host);
return;
}
diff --git a/drivers/scsi/libsas/sas_internal.h b/drivers/scsi/libsas/sas_internal.h
index b4f9368f116..0001374bd6b 100644
--- a/drivers/scsi/libsas/sas_internal.h
+++ b/drivers/scsi/libsas/sas_internal.h
@@ -55,7 +55,7 @@ void sas_unregister_phys(struct sas_ha_struct *sas_ha);
int sas_register_ports(struct sas_ha_struct *sas_ha);
void sas_unregister_ports(struct sas_ha_struct *sas_ha);
-enum scsi_eh_timer_return sas_scsi_timed_out(struct scsi_cmnd *);
+enum blk_eh_timer_return sas_scsi_timed_out(struct scsi_cmnd *);
int sas_init_queue(struct sas_ha_struct *sas_ha);
int sas_init_events(struct sas_ha_struct *sas_ha);
diff --git a/drivers/scsi/libsas/sas_scsi_host.c b/drivers/scsi/libsas/sas_scsi_host.c
index a8e3ef30907..744838780ad 100644
--- a/drivers/scsi/libsas/sas_scsi_host.c
+++ b/drivers/scsi/libsas/sas_scsi_host.c
@@ -673,43 +673,43 @@ out:
return;
}
-enum scsi_eh_timer_return sas_scsi_timed_out(struct scsi_cmnd *cmd)
+enum blk_eh_timer_return sas_scsi_timed_out(struct scsi_cmnd *cmd)
{
struct sas_task *task = TO_SAS_TASK(cmd);
unsigned long flags;
if (!task) {
- cmd->timeout_per_command /= 2;
+ cmd->request->timeout /= 2;
SAS_DPRINTK("command 0x%p, task 0x%p, gone: %s\n",
- cmd, task, (cmd->timeout_per_command ?
- "EH_RESET_TIMER" : "EH_NOT_HANDLED"));
- if (!cmd->timeout_per_command)
- return EH_NOT_HANDLED;
- return EH_RESET_TIMER;
+ cmd, task, (cmd->request->timeout ?
+ "BLK_EH_RESET_TIMER" : "BLK_EH_NOT_HANDLED"));
+ if (!cmd->request->timeout)
+ return BLK_EH_NOT_HANDLED;
+ return BLK_EH_RESET_TIMER;
}
spin_lock_irqsave(&task->task_state_lock, flags);
BUG_ON(task->task_state_flags & SAS_TASK_STATE_ABORTED);
if (task->task_state_flags & SAS_TASK_STATE_DONE) {
spin_unlock_irqrestore(&task->task_state_lock, flags);
- SAS_DPRINTK("command 0x%p, task 0x%p, timed out: EH_HANDLED\n",
- cmd, task);
- return EH_HANDLED;
+ SAS_DPRINTK("command 0x%p, task 0x%p, timed out: "
+ "BLK_EH_HANDLED\n", cmd, task);
+ return BLK_EH_HANDLED;
}
if (!(task->task_state_flags & SAS_TASK_AT_INITIATOR)) {
spin_unlock_irqrestore(&task->task_state_lock, flags);
SAS_DPRINTK("command 0x%p, task 0x%p, not at initiator: "
- "EH_RESET_TIMER\n",
+ "BLK_EH_RESET_TIMER\n",
cmd, task);
- return EH_RESET_TIMER;
+ return BLK_EH_RESET_TIMER;
}
task->task_state_flags |= SAS_TASK_STATE_ABORTED;
spin_unlock_irqrestore(&task->task_state_lock, flags);
- SAS_DPRINTK("command 0x%p, task 0x%p, timed out: EH_NOT_HANDLED\n",
+ SAS_DPRINTK("command 0x%p, task 0x%p, timed out: BLK_EH_NOT_HANDLED\n",
cmd, task);
- return EH_NOT_HANDLED;
+ return BLK_EH_NOT_HANDLED;
}
int sas_ioctl(struct scsi_device *sdev, int cmd, void __user *arg)
@@ -1039,7 +1039,7 @@ void sas_task_abort(struct sas_task *task)
return;
}
- scsi_req_abort_cmd(sc);
+ blk_abort_request(sc->request);
scsi_schedule_eh(sc->device->host);
}
diff --git a/drivers/scsi/megaraid/megaraid_sas.c b/drivers/scsi/megaraid/megaraid_sas.c
index 97b763378e7..afe1de99876 100644
--- a/drivers/scsi/megaraid/megaraid_sas.c
+++ b/drivers/scsi/megaraid/megaraid_sas.c
@@ -1167,7 +1167,7 @@ static int megasas_generic_reset(struct scsi_cmnd *scmd)
* cmd has not been completed within the timeout period.
*/
static enum
-scsi_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
+blk_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
{
struct megasas_cmd *cmd = (struct megasas_cmd *)scmd->SCp.ptr;
struct megasas_instance *instance;
@@ -1175,7 +1175,7 @@ scsi_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
if (time_after(jiffies, scmd->jiffies_at_alloc +
(MEGASAS_DEFAULT_CMD_TIMEOUT * 2) * HZ)) {
- return EH_NOT_HANDLED;
+ return BLK_EH_NOT_HANDLED;
}
instance = cmd->instance;
@@ -1189,7 +1189,7 @@ scsi_eh_timer_return megasas_reset_timer(struct scsi_cmnd *scmd)
spin_unlock_irqrestore(instance->host->host_lock, flags);
}
- return EH_RESET_TIMER;
+ return BLK_EH_RESET_TIMER;
}
/**
diff --git a/drivers/scsi/ncr53c8xx.c b/drivers/scsi/ncr53c8xx.c
index c57c94c0ffd..3b7240e4081 100644
--- a/drivers/scsi/ncr53c8xx.c
+++ b/drivers/scsi/ncr53c8xx.c
@@ -4170,8 +4170,8 @@ static int ncr_queue_command (struct ncb *np, struct scsi_cmnd *cmd)
**
**----------------------------------------------------
*/
- if (np->settle_time && cmd->timeout_per_command >= HZ) {
- u_long tlimit = jiffies + cmd->timeout_per_command - HZ;
+ if (np->settle_time && cmd->request->timeout >= HZ) {
+ u_long tlimit = jiffies + cmd->request->timeout - HZ;
if (time_after(np->settle_time, tlimit))
np->settle_time = tlimit;
}
diff --git a/drivers/scsi/qla1280.c b/drivers/scsi/qla1280.c
index 37f9ba0cd79..b6cd12b2e99 100644
--- a/drivers/scsi/qla1280.c
+++ b/drivers/scsi/qla1280.c
@@ -2845,7 +2845,7 @@ qla1280_64bit_start_scsi(struct scsi_qla_host *ha, struct srb * sp)
memset(((char *)pkt + 8), 0, (REQUEST_ENTRY_SIZE - 8));
/* Set ISP command timeout. */
- pkt->timeout = cpu_to_le16(cmd->timeout_per_command/HZ);
+ pkt->timeout = cpu_to_le16(cmd->request->timeout/HZ);
/* Set device target ID and LUN */
pkt->lun = SCSI_LUN_32(cmd);
@@ -3114,7 +3114,7 @@ qla1280_32bit_start_scsi(struct scsi_qla_host *ha, struct srb * sp)
memset(((char *)pkt + 8), 0, (REQUEST_ENTRY_SIZE - 8));
/* Set ISP command timeout. */
- pkt->timeout = cpu_to_le16(cmd->timeout_per_command/HZ);
+ pkt->timeout = cpu_to_le16(cmd->request->timeout/HZ);
/* Set device target ID and LUN */
pkt->lun = SCSI_LUN_32(cmd);
diff --git a/drivers/scsi/qla4xxx/ql4_os.c b/drivers/scsi/qla4xxx/ql4_os.c
index 88bebb13bc5..de8279ad7d8 100644
--- a/drivers/scsi/qla4xxx/ql4_os.c
+++ b/drivers/scsi/qla4xxx/ql4_os.c
@@ -1542,7 +1542,7 @@ static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd)
DEBUG2(printk(KERN_INFO
"scsi%ld: DEVICE_RESET cmd=%p jiffies = 0x%lx, to=%x,"
"dpc_flags=%lx, status=%x allowed=%d\n", ha->host_no,
- cmd, jiffies, cmd->timeout_per_command / HZ,
+ cmd, jiffies, cmd->request->timeout / HZ,
ha->dpc_flags, cmd->result, cmd->allowed));
/* FIXME: wait for hba to go online */
@@ -1598,7 +1598,7 @@ static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd)
DEBUG2(printk(KERN_INFO
"scsi%ld: TARGET_DEVICE_RESET cmd=%p jiffies = 0x%lx, "
"to=%x,dpc_flags=%lx, status=%x allowed=%d\n",
- ha->host_no, cmd, jiffies, cmd->timeout_per_command / HZ,
+ ha->host_no, cmd, jiffies, cmd->request->timeout / HZ,
ha->dpc_flags, cmd->result, cmd->allowed));
stat = qla4xxx_reset_target(ha, ddb_entry);
diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c
index 762a8797e0b..2ac3cb2b908 100644
--- a/drivers/scsi/scsi.c
+++ b/drivers/scsi/scsi.c
@@ -291,7 +291,6 @@ struct scsi_cmnd *scsi_get_command(struct scsi_device *dev, gfp_t gfp_mask)
unsigned long flags;
cmd->device = dev;
- init_timer(&cmd->eh_timeout);
INIT_LIST_HEAD(&cmd->list);
spin_lock_irqsave(&dev->list_lock, flags);
list_add_tail(&cmd->list, &dev->cmd_list);
@@ -652,14 +651,19 @@ int scsi_dispatch_cmd(struct scsi_cmnd *cmd)
unsigned long timeout;
int rtn = 0;
+ /*
+ * We will use a queued command if possible, otherwise we will
+ * emulate the queuing and calling of completion function ourselves.
+ */
+ atomic_inc(&cmd->device->iorequest_cnt);
+
/* check if the device is still usable */
if (unlikely(cmd->device->sdev_state == SDEV_DEL)) {
/* in SDEV_DEL we error all commands. DID_NO_CONNECT
* returns an immediate error upwards, and signals
* that the device is no longer present */
cmd->result = DID_NO_CONNECT << 16;
- atomic_inc(&cmd->device->iorequest_cnt);
- __scsi_done(cmd);
+ scsi_done(cmd);
/* return 0 (because the command has been processed) */
goto out;
}
@@ -673,6 +677,7 @@ int scsi_dispatch_cmd(struct scsi_cmnd *cmd)
* occur until the device transitions out of the
* suspend state.
*/
+
scsi_queue_insert(cmd, SCSI_MLQUEUE_DEVICE_BUSY);
SCSI_LOG_MLQUEUE(3, printk("queuecommand : device blocked \n"));
@@ -715,21 +720,9 @@ int scsi_dispatch_cmd(struct scsi_cmnd *cmd)
host->resetting = 0;
}
- /*
- * AK: unlikely race here: for some reason the timer could
- * expire before the serial number is set up below.
- */
- scsi_add_timer(cmd, cmd->timeout_per_command, scsi_times_out);
-
scsi_log_send(cmd);
/*
- * We will use a queued command if possible, otherwise we will
- * emulate the queuing and calling of completion function ourselves.
- */
- atomic_inc(&cmd->device->iorequest_cnt);
-
- /*
* Before we queue this command, check if the command
* length exceeds what the host adapter can handle.
*/
@@ -745,6 +738,12 @@ int scsi_dispatch_cmd(struct scsi_cmnd *cmd)
}
spin_lock_irqsave(host->host_lock, flags);
+ /*
+ * AK: unlikely race here: for some reason the timer could
+ * expire before the serial number is set up below.
+ *
+ * TODO: kill serial or move to blk layer
+ */
scsi_cmd_get_serial(host, cmd);
if (unlikely(host->shost_state == SHOST_DEL)) {
@@ -755,12 +754,8 @@ int scsi_dispatch_cmd(struct scsi_cmnd *cmd)
}
spin_unlock_irqrestore(host->host_lock, flags);
if (rtn) {
- if (scsi_delete_timer(cmd)) {
- atomic_inc(&cmd->device->iodone_cnt);
- scsi_queue_insert(cmd,
- (rtn == SCSI_MLQUEUE_DEVICE_BUSY) ?
- rtn : SCSI_MLQUEUE_HOST_BUSY);
- }
+ scsi_queue_insert(cmd, (rtn == SCSI_MLQUEUE_DEVICE_BUSY) ?
+ rtn : SCSI_MLQUEUE_HOST_BUSY);
SCSI_LOG_MLQUEUE(3,
printk("queuecommand : request rejected\n"));
}
@@ -771,24 +766,6 @@ int scsi_dispatch_cmd(struct scsi_cmnd *cmd)
}
/**
- * scsi_req_abort_cmd -- Request command recovery for the specified command
- * @cmd: pointer to the SCSI command of interest
- *
- * This function requests that SCSI Core start recovery for the
- * command by deleting the timer and adding the command to the eh
- * queue. It can be called by either LLDDs or SCSI Core. LLDDs who
- * implement their own error recovery MAY ignore the timeout event if
- * they generated scsi_req_abort_cmd.
- */
-void scsi_req_abort_cmd(struct scsi_cmnd *cmd)
-{
- if (!scsi_delete_timer(cmd))
- return;
- scsi_times_out(cmd);
-}
-EXPORT_SYMBOL(scsi_req_abort_cmd);
-
-/**
* scsi_done - Enqueue the finished SCSI command into the done queue.
* @cmd: The SCSI Command for which a low-level device driver (LLDD) gives
* ownership back to SCSI Core -- i.e. the LLDD has finished with it.
@@ -803,42 +780,7 @@ EXPORT_SYMBOL(scsi_req_abort_cmd);
*/
static void scsi_done(struct scsi_cmnd *cmd)
{
- /*
- * We don't have to worry about this one timing out anymore.
- * If we are unable to remove the timer, then the command
- * has already timed out. In which case, we have no choice but to
- * let the timeout function run, as we have no idea where in fact
- * that function could really be. It might be on another processor,
- * etc, etc.
- */
- if (!scsi_delete_timer(cmd))
- return;
- __scsi_done(cmd);
-}
-
-/* Private entry to scsi_done() to complete a command when the timer
- * isn't running --- used by scsi_times_out */
-void __scsi_done(struct scsi_cmnd *cmd)
-{
- struct request *rq = cmd->request;
-
- /*
- * Set the serial numbers back to zero
- */
- cmd->serial_number = 0;
-
- atomic_inc(&cmd->device->iodone_cnt);
- if (cmd->result)
- atomic_inc(&cmd->device->ioerr_cnt);
-
- BUG_ON(!rq);
-
- /*
- * The uptodate/nbytes values don't matter, as we allow partial
- * completes and thus will check this in the softirq callback
- */
- rq->completion_data = cmd;
- blk_complete_request(rq);
+ blk_complete_request(cmd->request);
}
/* Move this to a header if it becomes more generally useful */
diff --git a/drivers/scsi/scsi_error.c b/drivers/scsi/scsi_error.c
index 39ce3aba1da..fecefa05cb6 100644
--- a/drivers/scsi/scsi_error.c
+++ b/drivers/scsi/scsi_error.c
@@ -112,69 +112,8 @@ int scsi_eh_scmd_add(struct scsi_cmnd *scmd, int eh_flag)
}
/**
- * scsi_add_timer - Start timeout timer for a single scsi command.
- * @scmd: scsi command that is about to start running.
- * @timeout: amount of time to allow this command to run.
- * @complete: timeout function to call if timer isn't canceled.
- *
- * Notes:
- * This should be turned into an inline function. Each scsi command
- * has its own timer, and as it is added to the queue, we set up the
- * timer. When the command completes, we cancel the timer.
- */
-void scsi_add_timer(struct scsi_cmnd *scmd, int timeout,
- void (*complete)(struct scsi_cmnd *))
-{
-
- /*
- * If the clock was already running for this command, then
- * first delete the timer. The timer handling code gets rather
- * confused if we don't do this.
- */
- if (scmd->eh_timeout.function)
- del_timer(&scmd->eh_timeout);
-
- scmd->eh_timeout.data = (unsigned long)scmd;
- scmd->eh_timeout.expires = jiffies + timeout;
- scmd->eh_timeout.function = (void (*)(unsigned long)) complete;
-
- SCSI_LOG_ERROR_RECOVERY(5, printk("%s: scmd: %p, time:"
- " %d, (%p)\n", __func__,
- scmd, timeout, complete));
-
- add_timer(&scmd->eh_timeout);
-}
-
-/**
- * scsi_delete_timer - Delete/cancel timer for a given function.
- * @scmd: Cmd that we are canceling timer for
- *
- * Notes:
- * This should be turned into an inline function.
- *
- * Return value:
- * 1 if we were able to detach the timer. 0 if we blew it, and the
- * timer function has already started to run.
- */
-int scsi_delete_timer(struct scsi_cmnd *scmd)
-{
- int rtn;
-
- rtn = del_timer(&scmd->eh_timeout);
-
- SCSI_LOG_ERROR_RECOVERY(5, printk("%s: scmd: %p,"
- " rtn: %d\n", __func__,
- scmd, rtn));
-
- scmd->eh_timeout.data = (unsigned long)NULL;
- scmd->eh_timeout.function = NULL;
-
- return rtn;
-}
-
-/**
* scsi_times_out - Timeout function for normal scsi commands.
- * @scmd: Cmd that is timing out.
+ * @req: request that is timing out.
*
* Notes:
* We do not need to lock this. There is the potential for a race
@@ -182,9 +121,11 @@ int scsi_delete_timer(struct scsi_cmnd *scmd)
* normal completion function determines that the timer has already
* fired, then it mustn't do anything.
*/
-void scsi_times_out(struct scsi_cmnd *scmd)
+enum blk_eh_timer_return scsi_times_out(struct request *req)
{
- enum scsi_eh_timer_return (* eh_timed_out)(struct scsi_cmnd *);
+ struct scsi_cmnd *scmd = req->special;
+ enum blk_eh_timer_return (*eh_timed_out)(struct scsi_cmnd *);
+ enum blk_eh_timer_return rtn = BLK_EH_NOT_HANDLED;
scsi_log_completion(scmd, TIMEOUT_ERROR);
@@ -196,22 +137,20 @@ void scsi_times_out(struct scsi_cmnd *scmd)
eh_timed_out = NULL;
if (eh_timed_out)
- switch (eh_timed_out(scmd)) {
- case EH_HANDLED:
- __scsi_done(scmd);
- return;
- case EH_RESET_TIMER:
- scsi_add_timer(scmd, scmd->timeout_per_command,
- scsi_times_out);
- return;
- case EH_NOT_HANDLED:
+ rtn = eh_timed_out(scmd);
+ switch (rtn) {
+ case BLK_EH_NOT_HANDLED:
break;
+ default:
+ return rtn;
}
if (unlikely(!scsi_eh_scmd_add(scmd, SCSI_EH_CANCEL_CMD))) {
scmd->result |= DID_TIME_OUT << 16;
- __scsi_done(scmd);
+ return BLK_EH_HANDLED;
}
+
+ return BLK_EH_NOT_HANDLED;
}
/**
@@ -1793,7 +1732,6 @@ scsi_reset_provider(struct scsi_device *dev, int flag)
blk_rq_init(NULL, &req);
scmd->request = &req;
- memset(&scmd->eh_timeout, 0, sizeof(scmd->eh_timeout));
scmd->cmnd = req.cmd;
@@ -1804,8 +1742,6 @@ scsi_reset_provider(struct scsi_device *dev, int flag)
scmd->sc_data_direction = DMA_BIDIRECTIONAL;
- init_timer(&scmd->eh_timeout);
-
spin_lock_irqsave(shost->host_lock, flags);
shost->tmf_in_progress = 1;
spin_unlock_irqrestore(shost->host_lock, flags);
diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index d2884bffa1b..98ee55ced59 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -1181,7 +1181,6 @@ int scsi_setup_blk_pc_cmnd(struct scsi_device *sdev, struct request *req)
cmd->transfersize = req->data_len;
cmd->allowed = req->retries;
- cmd->timeout_per_command = req->timeout;
return BLKPREP_OK;
}
EXPORT_SYMBOL(scsi_setup_blk_pc_cmnd);
@@ -1417,17 +1416,26 @@ static void scsi_kill_request(struct request *req, struct request_queue *q)
spin_unlock(shost->host_lock);
spin_lock(sdev->request_queue->queue_lock);
- __scsi_done(cmd);
+ blk_complete_request(req);
}
static void scsi_softirq_done(struct request *rq)
{
- struct scsi_cmnd *cmd = rq->completion_data;
- unsigned long wait_for = (cmd->allowed + 1) * cmd->timeout_per_command;
+ struct scsi_cmnd *cmd = rq->special;
+ unsigned long wait_for = (cmd->allowed + 1) * rq->timeout;
int disposition;
INIT_LIST_HEAD(&cmd->eh_entry);
+ /*
+ * Set the serial numbers back to zero
+ */
+ cmd->serial_number = 0;
+
+ atomic_inc(&cmd->device->iodone_cnt);
+ if (cmd->result)
+ atomic_inc(&cmd->device->ioerr_cnt);
+
disposition = scsi_decide_disposition(cmd);
if (disposition != SUCCESS &&
time_before(cmd->jiffies_at_alloc + wait_for, jiffies)) {
@@ -1676,6 +1684,7 @@ struct request_queue *scsi_alloc_queue(struct scsi_device *sdev)
blk_queue_prep_rq(q, scsi_prep_fn);
blk_queue_softirq_done(q, scsi_softirq_done);
+ blk_queue_rq_timed_out(q, scsi_times_out);
return q;
}
diff --git a/drivers/scsi/scsi_priv.h b/drivers/scsi/scsi_priv.h
index 79f0f751120..6cddd5dd323 100644
--- a/drivers/scsi/scsi_priv.h
+++ b/drivers/scsi/scsi_priv.h
@@ -4,6 +4,7 @@
#include <linux/device.h>
struct request_queue;
+struct request;
struct scsi_cmnd;
struct scsi_device;
struct scsi_host_template;
@@ -27,7 +28,6 @@ extern void scsi_exit_hosts(void);
extern int scsi_dispatch_cmd(struct scsi_cmnd *cmd);
extern int scsi_setup_command_freelist(struct Scsi_Host *shost);
extern void scsi_destroy_command_freelist(struct Scsi_Host *shost);
-extern void __scsi_done(struct scsi_cmnd *cmd);
#ifdef CONFIG_SCSI_LOGGING
void scsi_log_send(struct scsi_cmnd *cmd);
void scsi_log_completion(struct scsi_cmnd *cmd, int disposition);
@@ -49,10 +49,7 @@ extern int __init scsi_init_devinfo(void);
extern void scsi_exit_devinfo(void);
/* scsi_error.c */
-extern void scsi_add_timer(struct scsi_cmnd *, int,
- void (*)(struct scsi_cmnd *));
-extern int scsi_delete_timer(struct scsi_cmnd *);
-extern void scsi_times_out(struct scsi_cmnd *cmd);
+extern enum blk_eh_timer_return scsi_times_out(struct request *req);
extern int scsi_error_handler(void *host);
extern int scsi_decide_disposition(struct scsi_cmnd *cmd);
extern void scsi_eh_wakeup(struct Scsi_Host *shost);
diff --git a/drivers/scsi/scsi_sysfs.c b/drivers/scsi/scsi_sysfs.c
index 09d311d559d..93c28f30bbd 100644
--- a/drivers/scsi/scsi_sysfs.c
+++ b/drivers/scsi/scsi_sysfs.c
@@ -561,12 +561,15 @@ sdev_rd_attr (vendor, "%.8s\n");
sdev_rd_attr (model, "%.16s\n");
sdev_rd_attr (rev, "%.4s\n");
+/*
+ * TODO: can we make these symlinks to the block layer ones?
+ */
static ssize_t
sdev_show_timeout (struct device *dev, struct device_attribute *attr, char *buf)
{
struct scsi_device *sdev;
sdev = to_scsi_device(dev);
- return snprintf (buf, 20, "%d\n", sdev->timeout / HZ);
+ return snprintf(buf, 20, "%d\n", sdev->request_queue->rq_timeout / HZ);
}
static ssize_t
@@ -577,7 +580,7 @@ sdev_store_timeout (struct device *dev, struct device_attribute *attr,
int timeout;
sdev = to_scsi_device(dev);
sscanf (buf, "%d\n", &timeout);
- sdev->timeout = timeout * HZ;
+ blk_queue_rq_timeout(sdev->request_queue, timeout * HZ);
return count;
}
static DEVICE_ATTR(timeout, S_IRUGO | S_IWUSR, sdev_show_timeout, sdev_store_timeout);
diff --git a/drivers/scsi/scsi_tgt_lib.c b/drivers/scsi/scsi_tgt_lib.c
index f26299dfc5d..48ba413f7f6 100644
--- a/drivers/scsi/scsi_tgt_lib.c
+++ b/drivers/scsi/scsi_tgt_lib.c
@@ -362,7 +362,7 @@ static int scsi_map_user_pages(struct scsi_tgt_cmd *tcmd, struct scsi_cmnd *cmd,
int err;
dprintk("%lx %u\n", uaddr, len);
- err = blk_rq_map_user(q, rq, (void *)uaddr, len);
+ err = blk_rq_map_user(q, rq, NULL, (void *)uaddr, len, GFP_KERNEL);
if (err) {
/*
* TODO: need to fixup sg_tablesize, max_segment_size,
diff --git a/drivers/scsi/scsi_transport_fc.c b/drivers/scsi/scsi_transport_fc.c
index cb971f0b784..d5f7653bb94 100644
--- a/drivers/scsi/scsi_transport_fc.c
+++ b/drivers/scsi/scsi_transport_fc.c
@@ -1926,15 +1926,15 @@ static int fc_vport_match(struct attribute_container *cont,
* Notes:
* This routine assumes no locks are held on entry.
*/
-static enum scsi_eh_timer_return
+static enum blk_eh_timer_return
fc_timed_out(struct scsi_cmnd *scmd)
{
struct fc_rport *rport = starget_to_rport(scsi_target(scmd->device));
if (rport->port_state == FC_PORTSTATE_BLOCKED)
- return EH_RESET_TIMER;
+ return BLK_EH_RESET_TIMER;
- return EH_NOT_HANDLED;
+ return BLK_EH_NOT_HANDLED;
}
/*
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c
index af9e406a3ad..a7b53be6336 100644
--- a/drivers/scsi/sd.c
+++ b/drivers/scsi/sd.c
@@ -87,6 +87,12 @@ MODULE_ALIAS_SCSI_DEVICE(TYPE_DISK);
MODULE_ALIAS_SCSI_DEVICE(TYPE_MOD);
MODULE_ALIAS_SCSI_DEVICE(TYPE_RBC);
+#if !defined(CONFIG_DEBUG_BLOCK_EXT_DEVT)
+#define SD_MINORS 16
+#else
+#define SD_MINORS 0
+#endif
+
static int sd_revalidate_disk(struct gendisk *);
static int sd_probe(struct device *);
static int sd_remove(struct device *);
@@ -160,7 +166,7 @@ sd_store_cache_type(struct device *dev, struct device_attribute *attr,
sd_print_sense_hdr(sdkp, &sshdr);
return -EINVAL;
}
- sd_revalidate_disk(sdkp->disk);
+ revalidate_disk(sdkp->disk);
return count;
}
@@ -378,7 +384,6 @@ static int sd_prep_fn(struct request_queue *q, struct request *rq)
sector_t block = rq->sector;
sector_t threshold;
unsigned int this_count = rq->nr_sectors;
- unsigned int timeout = sdp->timeout;
int ret;
if (rq->cmd_type == REQ_TYPE_BLOCK_PC) {
@@ -579,7 +584,6 @@ static int sd_prep_fn(struct request_queue *q, struct request *rq)
SCpnt->transfersize = sdp->sector_size;
SCpnt->underflow = this_count << 9;
SCpnt->allowed = SD_MAX_RETRIES;
- SCpnt->timeout_per_command = timeout;
/*
* This indicates that the command is ready from our end to be
@@ -911,7 +915,7 @@ static void sd_rescan(struct device *dev)
struct scsi_disk *sdkp = scsi_disk_get_from_dev(dev);
if (sdkp) {
- sd_revalidate_disk(sdkp->disk);
+ revalidate_disk(sdkp->disk);
scsi_disk_put(sdkp);
}
}
@@ -1759,6 +1763,52 @@ static int sd_revalidate_disk(struct gendisk *disk)
}
/**
+ * sd_format_disk_name - format disk name
+ * @prefix: name prefix - ie. "sd" for SCSI disks
+ * @index: index of the disk to format name for
+ * @buf: output buffer
+ * @buflen: length of the output buffer
+ *
+ * SCSI disk names starts at sda. The 26th device is sdz and the
+ * 27th is sdaa. The last one for two lettered suffix is sdzz
+ * which is followed by sdaaa.
+ *
+ * This is basically 26 base counting with one extra 'nil' entry
+ * at the beggining from the second digit on and can be
+ * determined using similar method as 26 base conversion with the
+ * index shifted -1 after each digit is computed.
+ *
+ * CONTEXT:
+ * Don't care.
+ *
+ * RETURNS:
+ * 0 on success, -errno on failure.
+ */
+static int sd_format_disk_name(char *prefix, int index, char *buf, int buflen)
+{
+ const int base = 'z' - 'a' + 1;
+ char *begin = buf + strlen(prefix);
+ char *end = buf + buflen;
+ char *p;
+ int unit;
+
+ p = end - 1;
+ *p = '\0';
+ unit = base;
+ do {
+ if (p == begin)
+ return -EINVAL;
+ *--p = 'a' + (index % unit);
+ index = (index / unit) - 1;
+ } while (index >= 0);
+
+ memmove(begin, p, end - p);
+ memcpy(buf, prefix, strlen(prefix));
+
+ return 0;
+}
+
+/**
* sd_probe - called during driver initialization and whenever a
* new scsi device is attached to the system. It is called once
* for each scsi device (not just disks) present.
@@ -1796,7 +1846,7 @@ static int sd_probe(struct device *dev)
if (!sdkp)
goto out;
- gd = alloc_disk(16);
+ gd = alloc_disk(SD_MINORS);
if (!gd)
goto out_free;
@@ -1810,8 +1860,8 @@ static int sd_probe(struct device *dev)
if (error)
goto out_put;
- error = -EBUSY;
- if (index >= SD_MAX_DISKS)
+ error = sd_format_disk_name("sd", index, gd->disk_name, DISK_NAME_LEN);
+ if (error)
goto out_free_index;
sdkp->device = sdp;
@@ -1821,11 +1871,12 @@ static int sd_probe(struct device *dev)
sdkp->openers = 0;
sdkp->previous_state = 1;
- if (!sdp->timeout) {
+ if (!sdp->request_queue->rq_timeout) {
if (sdp->type != TYPE_MOD)
- sdp->timeout = SD_TIMEOUT;
+ blk_queue_rq_timeout(sdp->request_queue, SD_TIMEOUT);
else
- sdp->timeout = SD_MOD_TIMEOUT;
+ blk_queue_rq_timeout(sdp->request_queue,
+ SD_MOD_TIMEOUT);
}
device_initialize(&sdkp->dev);
@@ -1838,24 +1889,12 @@ static int sd_probe(struct device *dev)
get_device(&sdp->sdev_gendev);
- gd->major = sd_major((index & 0xf0) >> 4);
- gd->first_minor = ((index & 0xf) << 4) | (index & 0xfff00);
- gd->minors = 16;
- gd->fops = &sd_fops;
-
- if (index < 26) {
- sprintf(gd->disk_name, "sd%c", 'a' + index % 26);
- } else if (index < (26 + 1) * 26) {
- sprintf(gd->disk_name, "sd%c%c",
- 'a' + index / 26 - 1,'a' + index % 26);
- } else {
- const unsigned int m1 = (index / 26 - 1) / 26 - 1;
- const unsigned int m2 = (index / 26 - 1) % 26;
- const unsigned int m3 = index % 26;
- sprintf(gd->disk_name, "sd%c%c%c",
- 'a' + m1, 'a' + m2, 'a' + m3);
+ if (index < SD_MAX_DISKS) {
+ gd->major = sd_major((index & 0xf0) >> 4);
+ gd->first_minor = ((index & 0xf) << 4) | (index & 0xfff00);
+ gd->minors = SD_MINORS;
}
-
+ gd->fops = &sd_fops;
gd->private_data = &sdkp->driver;
gd->queue = sdkp->device->request_queue;
@@ -1864,7 +1903,7 @@ static int sd_probe(struct device *dev)
blk_queue_prep_rq(sdp->request_queue, sd_prep_fn);
gd->driverfs_dev = &sdp->sdev_gendev;
- gd->flags = GENHD_FL_DRIVERFS;
+ gd->flags = GENHD_FL_EXT_DEVT | GENHD_FL_DRIVERFS;
if (sdp->removable)
gd->flags |= GENHD_FL_REMOVABLE;
diff --git a/drivers/scsi/sg.c b/drivers/scsi/sg.c
index 661f9f21650..ba9b9bbd4e7 100644
--- a/drivers/scsi/sg.c
+++ b/drivers/scsi/sg.c
@@ -47,7 +47,6 @@ static int sg_version_num = 30534; /* 2 digits for each component */
#include <linux/seq_file.h>
#include <linux/blkdev.h>
#include <linux/delay.h>
-#include <linux/scatterlist.h>
#include <linux/blktrace_api.h>
#include <linux/smp_lock.h>
@@ -69,7 +68,6 @@ static void sg_proc_cleanup(void);
#endif
#define SG_ALLOW_DIO_DEF 0
-#define SG_ALLOW_DIO_CODE /* compile out by commenting this define */
#define SG_MAX_DEVS 32768
@@ -118,8 +116,8 @@ typedef struct sg_scatter_hold { /* holding area for scsi scatter gather info */
unsigned short k_use_sg; /* Count of kernel scatter-gather pieces */
unsigned sglist_len; /* size of malloc'd scatter-gather list ++ */
unsigned bufflen; /* Size of (aggregate) data buffer */
- unsigned b_malloc_len; /* actual len malloc'ed in buffer */
- struct scatterlist *buffer;/* scatter list */
+ struct page **pages;
+ int page_order;
char dio_in_use; /* 0->indirect IO (or mmap), 1->dio */
unsigned char cmd_opcode; /* first byte of command */
} Sg_scatter_hold;
@@ -137,6 +135,8 @@ typedef struct sg_request { /* SG_MAX_QUEUE requests outstanding per file */
char orphan; /* 1 -> drop on sight, 0 -> normal */
char sg_io_owned; /* 1 -> packet belongs to SG_IO */
volatile char done; /* 0->before bh, 1->before read, 2->read */
+ struct request *rq;
+ struct bio *bio;
} Sg_request;
typedef struct sg_fd { /* holds the state of a file descriptor */
@@ -175,8 +175,8 @@ typedef struct sg_device { /* holds the state of each scsi generic device */
static int sg_fasync(int fd, struct file *filp, int mode);
/* tasklet or soft irq callback */
-static void sg_cmd_done(void *data, char *sense, int result, int resid);
-static int sg_start_req(Sg_request * srp);
+static void sg_rq_end_io(struct request *rq, int uptodate);
+static int sg_start_req(Sg_request *srp, unsigned char *cmd);
static void sg_finish_rem_req(Sg_request * srp);
static int sg_build_indirect(Sg_scatter_hold * schp, Sg_fd * sfp, int buff_size);
static int sg_build_sgat(Sg_scatter_hold * schp, const Sg_fd * sfp,
@@ -188,17 +188,11 @@ static ssize_t sg_new_write(Sg_fd *sfp, struct file *file,
int read_only, Sg_request **o_srp);
static int sg_common_write(Sg_fd * sfp, Sg_request * srp,
unsigned char *cmnd, int timeout, int blocking);
-static int sg_u_iovec(sg_io_hdr_t * hp, int sg_num, int ind,
- int wr_xf, int *countp, unsigned char __user **up);
-static int sg_write_xfer(Sg_request * srp);
-static int sg_read_xfer(Sg_request * srp);
static int sg_read_oxfer(Sg_request * srp, char __user *outp, int num_read_xfer);
static void sg_remove_scat(Sg_scatter_hold * schp);
static void sg_build_reserve(Sg_fd * sfp, int req_size);
static void sg_link_reserve(Sg_fd * sfp, Sg_request * srp, int size);
static void sg_unlink_reserve(Sg_fd * sfp, Sg_request * srp);
-static struct page *sg_page_malloc(int rqSz, int lowDma, int *retSzp);
-static void sg_page_free(struct page *page, int size);
static Sg_fd *sg_add_sfp(Sg_device * sdp, int dev);
static int sg_remove_sfp(Sg_device * sdp, Sg_fd * sfp);
static void __sg_remove_sfp(Sg_device * sdp, Sg_fd * sfp);
@@ -206,7 +200,6 @@ static Sg_request *sg_get_rq_mark(Sg_fd * sfp, int pack_id);
static Sg_request *sg_add_request(Sg_fd * sfp);
static int sg_remove_request(Sg_fd * sfp, Sg_request * srp);
static int sg_res_in_use(Sg_fd * sfp);
-static int sg_build_direct(Sg_request * srp, Sg_fd * sfp, int dxfer_len);
static Sg_device *sg_get_dev(int dev);
#ifdef CONFIG_SCSI_PROC_FS
static int sg_last_dev(void);
@@ -529,8 +522,7 @@ sg_new_read(Sg_fd * sfp, char __user *buf, size_t count, Sg_request * srp)
err = -EFAULT;
goto err_out;
}
- err = sg_read_xfer(srp);
- err_out:
+err_out:
sg_finish_rem_req(srp);
return (0 == err) ? count : err;
}
@@ -612,7 +604,10 @@ sg_write(struct file *filp, const char __user *buf, size_t count, loff_t * ppos)
else
hp->dxfer_direction = (mxsize > 0) ? SG_DXFER_FROM_DEV : SG_DXFER_NONE;
hp->dxfer_len = mxsize;
- hp->dxferp = (char __user *)buf + cmd_size;
+ if (hp->dxfer_direction == SG_DXFER_TO_DEV)
+ hp->dxferp = (char __user *)buf + cmd_size;
+ else
+ hp->dxferp = NULL;
hp->sbp = NULL;
hp->timeout = old_hdr.reply_len; /* structure abuse ... */
hp->flags = input_size; /* structure abuse ... */
@@ -732,16 +727,12 @@ sg_common_write(Sg_fd * sfp, Sg_request * srp,
SCSI_LOG_TIMEOUT(4, printk("sg_common_write: scsi opcode=0x%02x, cmd_size=%d\n",
(int) cmnd[0], (int) hp->cmd_len));
- if ((k = sg_start_req(srp))) {
+ k = sg_start_req(srp, cmnd);
+ if (k) {
SCSI_LOG_TIMEOUT(1, printk("sg_common_write: start_req err=%d\n", k));
sg_finish_rem_req(srp);
return k; /* probably out of space --> ENOMEM */
}
- if ((k = sg_write_xfer(srp))) {
- SCSI_LOG_TIMEOUT(1, printk("sg_common_write: write_xfer, bad address\n"));
- sg_finish_rem_req(srp);
- return k;
- }
if (sdp->detached) {
sg_finish_rem_req(srp);
return -ENODEV;
@@ -763,20 +754,11 @@ sg_common_write(Sg_fd * sfp, Sg_request * srp,
break;
}
hp->duration = jiffies_to_msecs(jiffies);
-/* Now send everything of to mid-level. The next time we hear about this
- packet is when sg_cmd_done() is called (i.e. a callback). */
- if (scsi_execute_async(sdp->device, cmnd, hp->cmd_len, data_dir, srp->data.buffer,
- hp->dxfer_len, srp->data.k_use_sg, timeout,
- SG_DEFAULT_RETRIES, srp, sg_cmd_done,
- GFP_ATOMIC)) {
- SCSI_LOG_TIMEOUT(1, printk("sg_common_write: scsi_execute_async failed\n"));
- /*
- * most likely out of mem, but could also be a bad map
- */
- sg_finish_rem_req(srp);
- return -ENOMEM;
- } else
- return 0;
+
+ srp->rq->timeout = timeout;
+ blk_execute_rq_nowait(sdp->device->request_queue, sdp->disk,
+ srp->rq, 1, sg_rq_end_io);
+ return 0;
}
static int
@@ -1192,8 +1174,7 @@ sg_vma_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
Sg_fd *sfp;
unsigned long offset, len, sa;
Sg_scatter_hold *rsv_schp;
- struct scatterlist *sg;
- int k;
+ int k, length;
if ((NULL == vma) || (!(sfp = (Sg_fd *) vma->vm_private_data)))
return VM_FAULT_SIGBUS;
@@ -1203,15 +1184,14 @@ sg_vma_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
return VM_FAULT_SIGBUS;
SCSI_LOG_TIMEOUT(3, printk("sg_vma_fault: offset=%lu, scatg=%d\n",
offset, rsv_schp->k_use_sg));
- sg = rsv_schp->buffer;
sa = vma->vm_start;
- for (k = 0; (k < rsv_schp->k_use_sg) && (sa < vma->vm_end);
- ++k, sg = sg_next(sg)) {
+ length = 1 << (PAGE_SHIFT + rsv_schp->page_order);
+ for (k = 0; k < rsv_schp->k_use_sg && sa < vma->vm_end; k++) {
len = vma->vm_end - sa;
- len = (len < sg->length) ? len : sg->length;
+ len = (len < length) ? len : length;
if (offset < len) {
- struct page *page;
- page = virt_to_page(page_address(sg_page(sg)) + offset);
+ struct page *page = nth_page(rsv_schp->pages[k],
+ offset >> PAGE_SHIFT);
get_page(page); /* increment page count */
vmf->page = page;
return 0; /* success */
@@ -1233,8 +1213,7 @@ sg_mmap(struct file *filp, struct vm_area_struct *vma)
Sg_fd *sfp;
unsigned long req_sz, len, sa;
Sg_scatter_hold *rsv_schp;
- int k;
- struct scatterlist *sg;
+ int k, length;
if ((!filp) || (!vma) || (!(sfp = (Sg_fd *) filp->private_data)))
return -ENXIO;
@@ -1248,11 +1227,10 @@ sg_mmap(struct file *filp, struct vm_area_struct *vma)
return -ENOMEM; /* cannot map more than reserved buffer */
sa = vma->vm_start;
- sg = rsv_schp->buffer;
- for (k = 0; (k < rsv_schp->k_use_sg) && (sa < vma->vm_end);
- ++k, sg = sg_next(sg)) {
+ length = 1 << (PAGE_SHIFT + rsv_schp->page_order);
+ for (k = 0; k < rsv_schp->k_use_sg && sa < vma->vm_end; k++) {
len = vma->vm_end - sa;
- len = (len < sg->length) ? len : sg->length;
+ len = (len < length) ? len : length;
sa += len;
}
@@ -1263,16 +1241,19 @@ sg_mmap(struct file *filp, struct vm_area_struct *vma)
return 0;
}
-/* This function is a "bottom half" handler that is called by the
- * mid level when a command is completed (or has failed). */
-static void
-sg_cmd_done(void *data, char *sense, int result, int resid)
+/*
+ * This function is a "bottom half" handler that is called by the mid
+ * level when a command is completed (or has failed).
+ */
+static void sg_rq_end_io(struct request *rq, int uptodate)
{
- Sg_request *srp = data;
+ struct sg_request *srp = rq->end_io_data;
Sg_device *sdp = NULL;
Sg_fd *sfp;
unsigned long iflags;
unsigned int ms;
+ char *sense;
+ int result, resid;
if (NULL == srp) {
printk(KERN_ERR "sg_cmd_done: NULL request\n");
@@ -1286,6 +1267,9 @@ sg_cmd_done(void *data, char *sense, int result, int resid)
return;
}
+ sense = rq->sense;
+ result = rq->errors;
+ resid = rq->data_len;
SCSI_LOG_TIMEOUT(4, printk("sg_cmd_done: %s, pack_id=%d, res=0x%x\n",
sdp->disk->disk_name, srp->header.pack_id, result));
@@ -1296,7 +1280,6 @@ sg_cmd_done(void *data, char *sense, int result, int resid)
if (0 != result) {
struct scsi_sense_hdr sshdr;
- memcpy(srp->sense_b, sense, sizeof (srp->sense_b));
srp->header.status = 0xff & result;
srp->header.masked_status = status_byte(result);
srp->header.msg_status = msg_byte(result);
@@ -1634,37 +1617,79 @@ exit_sg(void)
idr_destroy(&sg_index_idr);
}
-static int
-sg_start_req(Sg_request * srp)
+static int sg_start_req(Sg_request *srp, unsigned char *cmd)
{
int res;
+ struct request *rq;
Sg_fd *sfp = srp->parentfp;
sg_io_hdr_t *hp = &srp->header;
int dxfer_len = (int) hp->dxfer_len;
int dxfer_dir = hp->dxfer_direction;
+ unsigned int iov_count = hp->iovec_count;
Sg_scatter_hold *req_schp = &srp->data;
Sg_scatter_hold *rsv_schp = &sfp->reserve;
+ struct request_queue *q = sfp->parentdp->device->request_queue;
+ struct rq_map_data *md, map_data;
+ int rw = hp->dxfer_direction == SG_DXFER_TO_DEV ? WRITE : READ;
+
+ SCSI_LOG_TIMEOUT(4, printk(KERN_INFO "sg_start_req: dxfer_len=%d\n",
+ dxfer_len));
+
+ rq = blk_get_request(q, rw, GFP_ATOMIC);
+ if (!rq)
+ return -ENOMEM;
+
+ memcpy(rq->cmd, cmd, hp->cmd_len);
+
+ rq->cmd_len = hp->cmd_len;
+ rq->cmd_type = REQ_TYPE_BLOCK_PC;
+
+ srp->rq = rq;
+ rq->end_io_data = srp;
+ rq->sense = srp->sense_b;
+ rq->retries = SG_DEFAULT_RETRIES;
- SCSI_LOG_TIMEOUT(4, printk("sg_start_req: dxfer_len=%d\n", dxfer_len));
if ((dxfer_len <= 0) || (dxfer_dir == SG_DXFER_NONE))
return 0;
- if (sg_allow_dio && (hp->flags & SG_FLAG_DIRECT_IO) &&
- (dxfer_dir != SG_DXFER_UNKNOWN) && (0 == hp->iovec_count) &&
- (!sfp->parentdp->device->host->unchecked_isa_dma)) {
- res = sg_build_direct(srp, sfp, dxfer_len);
- if (res <= 0) /* -ve -> error, 0 -> done, 1 -> try indirect */
- return res;
- }
- if ((!sg_res_in_use(sfp)) && (dxfer_len <= rsv_schp->bufflen))
- sg_link_reserve(sfp, srp, dxfer_len);
- else {
- res = sg_build_indirect(req_schp, sfp, dxfer_len);
- if (res) {
- sg_remove_scat(req_schp);
- return res;
+
+ if (sg_allow_dio && hp->flags & SG_FLAG_DIRECT_IO &&
+ dxfer_dir != SG_DXFER_UNKNOWN && !iov_count &&
+ !sfp->parentdp->device->host->unchecked_isa_dma &&
+ blk_rq_aligned(q, hp->dxferp, dxfer_len))
+ md = NULL;
+ else
+ md = &map_data;
+
+ if (md) {
+ if (!sg_res_in_use(sfp) && dxfer_len <= rsv_schp->bufflen)
+ sg_link_reserve(sfp, srp, dxfer_len);
+ else {
+ res = sg_build_indirect(req_schp, sfp, dxfer_len);
+ if (res)
+ return res;
}
+
+ md->pages = req_schp->pages;
+ md->page_order = req_schp->page_order;
+ md->nr_entries = req_schp->k_use_sg;
}
- return 0;
+
+ if (iov_count)
+ res = blk_rq_map_user_iov(q, rq, md, hp->dxferp, iov_count,
+ hp->dxfer_len, GFP_ATOMIC);
+ else
+ res = blk_rq_map_user(q, rq, md, hp->dxferp,
+ hp->dxfer_len, GFP_ATOMIC);
+
+ if (!res) {
+ srp->bio = rq->bio;
+
+ if (!md) {
+ req_schp->dio_in_use = 1;
+ hp->info |= SG_INFO_DIRECT_IO;
+ }
+ }
+ return res;
}
static void
@@ -1678,186 +1703,37 @@ sg_finish_rem_req(Sg_request * srp)
sg_unlink_reserve(sfp, srp);
else
sg_remove_scat(req_schp);
+
+ if (srp->rq) {
+ if (srp->bio)
+ blk_rq_unmap_user(srp->bio);
+
+ blk_put_request(srp->rq);
+ }
+
sg_remove_request(sfp, srp);
}
static int
sg_build_sgat(Sg_scatter_hold * schp, const Sg_fd * sfp, int tablesize)
{
- int sg_bufflen = tablesize * sizeof(struct scatterlist);
+ int sg_bufflen = tablesize * sizeof(struct page *);
gfp_t gfp_flags = GFP_ATOMIC | __GFP_NOWARN;
- /*
- * TODO: test without low_dma, we should not need it since
- * the block layer will bounce the buffer for us
- *
- * XXX(hch): we shouldn't need GFP_DMA for the actual S/G list.
- */
- if (sfp->low_dma)
- gfp_flags |= GFP_DMA;
- schp->buffer = kzalloc(sg_bufflen, gfp_flags);
- if (!schp->buffer)
+ schp->pages = kzalloc(sg_bufflen, gfp_flags);
+ if (!schp->pages)
return -ENOMEM;
- sg_init_table(schp->buffer, tablesize);
schp->sglist_len = sg_bufflen;
return tablesize; /* number of scat_gath elements allocated */
}
-#ifdef SG_ALLOW_DIO_CODE
-/* vvvvvvvv following code borrowed from st driver's direct IO vvvvvvvvv */
- /* TODO: hopefully we can use the generic block layer code */
-
-/* Pin down user pages and put them into a scatter gather list. Returns <= 0 if
- - mapping of all pages not successful
- (i.e., either completely successful or fails)
-*/
-static int
-st_map_user_pages(struct scatterlist *sgl, const unsigned int max_pages,
- unsigned long uaddr, size_t count, int rw)
-{
- unsigned long end = (uaddr + count + PAGE_SIZE - 1) >> PAGE_SHIFT;
- unsigned long start = uaddr >> PAGE_SHIFT;
- const int nr_pages = end - start;
- int res, i, j;
- struct page **pages;
-
- /* User attempted Overflow! */
- if ((uaddr + count) < uaddr)
- return -EINVAL;
-
- /* Too big */
- if (nr_pages > max_pages)
- return -ENOMEM;
-
- /* Hmm? */
- if (count == 0)
- return 0;
-
- if ((pages = kmalloc(max_pages * sizeof(*pages), GFP_ATOMIC)) == NULL)
- return -ENOMEM;
-
- /* Try to fault in all of the necessary pages */
- down_read(&current->mm->mmap_sem);
- /* rw==READ means read from drive, write into memory area */
- res = get_user_pages(
- current,
- current->mm,
- uaddr,
- nr_pages,
- rw == READ,
- 0, /* don't force */
- pages,
- NULL);
- up_read(&current->mm->mmap_sem);
-
- /* Errors and no page mapped should return here */
- if (res < nr_pages)
- goto out_unmap;
-
- for (i=0; i < nr_pages; i++) {
- /* FIXME: flush superflous for rw==READ,
- * probably wrong function for rw==WRITE
- */
- flush_dcache_page(pages[i]);
- /* ?? Is locking needed? I don't think so */
- /* if (!trylock_page(pages[i]))
- goto out_unlock; */
- }
-
- sg_set_page(sgl, pages[0], 0, uaddr & ~PAGE_MASK);
- if (nr_pages > 1) {
- sgl[0].length = PAGE_SIZE - sgl[0].offset;
- count -= sgl[0].length;
- for (i=1; i < nr_pages ; i++)
- sg_set_page(&sgl[i], pages[i], count < PAGE_SIZE ? count : PAGE_SIZE, 0);
- }
- else {
- sgl[0].length = count;
- }
-
- kfree(pages);
- return nr_pages;
-
- out_unmap:
- if (res > 0) {
- for (j=0; j < res; j++)
- page_cache_release(pages[j]);
- res = 0;
- }
- kfree(pages);
- return res;
-}
-
-
-/* And unmap them... */
-static int
-st_unmap_user_pages(struct scatterlist *sgl, const unsigned int nr_pages,
- int dirtied)
-{
- int i;
-
- for (i=0; i < nr_pages; i++) {
- struct page *page = sg_page(&sgl[i]);
-
- if (dirtied)
- SetPageDirty(page);
- /* unlock_page(page); */
- /* FIXME: cache flush missing for rw==READ
- * FIXME: call the correct reference counting function
- */
- page_cache_release(page);
- }
-
- return 0;
-}
-
-/* ^^^^^^^^ above code borrowed from st driver's direct IO ^^^^^^^^^ */
-#endif
-
-
-/* Returns: -ve -> error, 0 -> done, 1 -> try indirect */
-static int
-sg_build_direct(Sg_request * srp, Sg_fd * sfp, int dxfer_len)
-{
-#ifdef SG_ALLOW_DIO_CODE
- sg_io_hdr_t *hp = &srp->header;
- Sg_scatter_hold *schp = &srp->data;
- int sg_tablesize = sfp->parentdp->sg_tablesize;
- int mx_sc_elems, res;
- struct scsi_device *sdev = sfp->parentdp->device;
-
- if (((unsigned long)hp->dxferp &
- queue_dma_alignment(sdev->request_queue)) != 0)
- return 1;
-
- mx_sc_elems = sg_build_sgat(schp, sfp, sg_tablesize);
- if (mx_sc_elems <= 0) {
- return 1;
- }
- res = st_map_user_pages(schp->buffer, mx_sc_elems,
- (unsigned long)hp->dxferp, dxfer_len,
- (SG_DXFER_TO_DEV == hp->dxfer_direction) ? 1 : 0);
- if (res <= 0) {
- sg_remove_scat(schp);
- return 1;
- }
- schp->k_use_sg = res;
- schp->dio_in_use = 1;
- hp->info |= SG_INFO_DIRECT_IO;
- return 0;
-#else
- return 1;
-#endif
-}
-
static int
sg_build_indirect(Sg_scatter_hold * schp, Sg_fd * sfp, int buff_size)
{
- struct scatterlist *sg;
- int ret_sz = 0, k, rem_sz, num, mx_sc_elems;
+ int ret_sz = 0, i, k, rem_sz, num, mx_sc_elems;
int sg_tablesize = sfp->parentdp->sg_tablesize;
- int blk_size = buff_size;
- struct page *p = NULL;
+ int blk_size = buff_size, order;
+ gfp_t gfp_mask = GFP_ATOMIC | __GFP_COMP | __GFP_NOWARN;
if (blk_size < 0)
return -EFAULT;
@@ -1881,15 +1757,26 @@ sg_build_indirect(Sg_scatter_hold * schp, Sg_fd * sfp, int buff_size)
} else
scatter_elem_sz_prev = num;
}
- for (k = 0, sg = schp->buffer, rem_sz = blk_size;
- (rem_sz > 0) && (k < mx_sc_elems);
- ++k, rem_sz -= ret_sz, sg = sg_next(sg)) {
-
+
+ if (sfp->low_dma)
+ gfp_mask |= GFP_DMA;
+
+ if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
+ gfp_mask |= __GFP_ZERO;
+
+ order = get_order(num);
+retry:
+ ret_sz = 1 << (PAGE_SHIFT + order);
+
+ for (k = 0, rem_sz = blk_size; rem_sz > 0 && k < mx_sc_elems;
+ k++, rem_sz -= ret_sz) {
+
num = (rem_sz > scatter_elem_sz_prev) ?
- scatter_elem_sz_prev : rem_sz;
- p = sg_page_malloc(num, sfp->low_dma, &ret_sz);
- if (!p)
- return -ENOMEM;
+ scatter_elem_sz_prev : rem_sz;
+
+ schp->pages[k] = alloc_pages(gfp_mask, order);
+ if (!schp->pages[k])
+ goto out;
if (num == scatter_elem_sz_prev) {
if (unlikely(ret_sz > scatter_elem_sz_prev)) {
@@ -1897,12 +1784,12 @@ sg_build_indirect(Sg_scatter_hold * schp, Sg_fd * sfp, int buff_size)
scatter_elem_sz_prev = ret_sz;
}
}
- sg_set_page(sg, p, (ret_sz > num) ? num : ret_sz, 0);
SCSI_LOG_TIMEOUT(5, printk("sg_build_indirect: k=%d, num=%d, "
"ret_sz=%d\n", k, num, ret_sz));
} /* end of for loop */
+ schp->page_order = order;
schp->k_use_sg = k;
SCSI_LOG_TIMEOUT(5, printk("sg_build_indirect: k_use_sg=%d, "
"rem_sz=%d\n", k, rem_sz));
@@ -1910,223 +1797,42 @@ sg_build_indirect(Sg_scatter_hold * schp, Sg_fd * sfp, int buff_size)
schp->bufflen = blk_size;
if (rem_sz > 0) /* must have failed */
return -ENOMEM;
-
return 0;
-}
-
-static int
-sg_write_xfer(Sg_request * srp)
-{
- sg_io_hdr_t *hp = &srp->header;
- Sg_scatter_hold *schp = &srp->data;
- struct scatterlist *sg = schp->buffer;
- int num_xfer = 0;
- int j, k, onum, usglen, ksglen, res;
- int iovec_count = (int) hp->iovec_count;
- int dxfer_dir = hp->dxfer_direction;
- unsigned char *p;
- unsigned char __user *up;
- int new_interface = ('\0' == hp->interface_id) ? 0 : 1;
-
- if ((SG_DXFER_UNKNOWN == dxfer_dir) || (SG_DXFER_TO_DEV == dxfer_dir) ||
- (SG_DXFER_TO_FROM_DEV == dxfer_dir)) {
- num_xfer = (int) (new_interface ? hp->dxfer_len : hp->flags);
- if (schp->bufflen < num_xfer)
- num_xfer = schp->bufflen;
- }
- if ((num_xfer <= 0) || (schp->dio_in_use) ||
- (new_interface
- && ((SG_FLAG_NO_DXFER | SG_FLAG_MMAP_IO) & hp->flags)))
- return 0;
-
- SCSI_LOG_TIMEOUT(4, printk("sg_write_xfer: num_xfer=%d, iovec_count=%d, k_use_sg=%d\n",
- num_xfer, iovec_count, schp->k_use_sg));
- if (iovec_count) {
- onum = iovec_count;
- if (!access_ok(VERIFY_READ, hp->dxferp, SZ_SG_IOVEC * onum))
- return -EFAULT;
- } else
- onum = 1;
-
- ksglen = sg->length;
- p = page_address(sg_page(sg));
- for (j = 0, k = 0; j < onum; ++j) {
- res = sg_u_iovec(hp, iovec_count, j, 1, &usglen, &up);
- if (res)
- return res;
-
- for (; p; sg = sg_next(sg), ksglen = sg->length,
- p = page_address(sg_page(sg))) {
- if (usglen <= 0)
- break;
- if (ksglen > usglen) {
- if (usglen >= num_xfer) {
- if (__copy_from_user(p, up, num_xfer))
- return -EFAULT;
- return 0;
- }
- if (__copy_from_user(p, up, usglen))
- return -EFAULT;
- p += usglen;
- ksglen -= usglen;
- break;
- } else {
- if (ksglen >= num_xfer) {
- if (__copy_from_user(p, up, num_xfer))
- return -EFAULT;
- return 0;
- }
- if (__copy_from_user(p, up, ksglen))
- return -EFAULT;
- up += ksglen;
- usglen -= ksglen;
- }
- ++k;
- if (k >= schp->k_use_sg)
- return 0;
- }
- }
-
- return 0;
-}
+out:
+ for (i = 0; i < k; i++)
+ __free_pages(schp->pages[k], order);
-static int
-sg_u_iovec(sg_io_hdr_t * hp, int sg_num, int ind,
- int wr_xf, int *countp, unsigned char __user **up)
-{
- int num_xfer = (int) hp->dxfer_len;
- unsigned char __user *p = hp->dxferp;
- int count;
+ if (--order >= 0)
+ goto retry;
- if (0 == sg_num) {
- if (wr_xf && ('\0' == hp->interface_id))
- count = (int) hp->flags; /* holds "old" input_size */
- else
- count = num_xfer;
- } else {
- sg_iovec_t iovec;
- if (__copy_from_user(&iovec, p + ind*SZ_SG_IOVEC, SZ_SG_IOVEC))
- return -EFAULT;
- p = iovec.iov_base;
- count = (int) iovec.iov_len;
- }
- if (!access_ok(wr_xf ? VERIFY_READ : VERIFY_WRITE, p, count))
- return -EFAULT;
- if (up)
- *up = p;
- if (countp)
- *countp = count;
- return 0;
+ return -ENOMEM;
}
static void
sg_remove_scat(Sg_scatter_hold * schp)
{
SCSI_LOG_TIMEOUT(4, printk("sg_remove_scat: k_use_sg=%d\n", schp->k_use_sg));
- if (schp->buffer && (schp->sglist_len > 0)) {
- struct scatterlist *sg = schp->buffer;
-
- if (schp->dio_in_use) {
-#ifdef SG_ALLOW_DIO_CODE
- st_unmap_user_pages(sg, schp->k_use_sg, TRUE);
-#endif
- } else {
+ if (schp->pages && schp->sglist_len > 0) {
+ if (!schp->dio_in_use) {
int k;
- for (k = 0; (k < schp->k_use_sg) && sg_page(sg);
- ++k, sg = sg_next(sg)) {
+ for (k = 0; k < schp->k_use_sg && schp->pages[k]; k++) {
SCSI_LOG_TIMEOUT(5, printk(
- "sg_remove_scat: k=%d, pg=0x%p, len=%d\n",
- k, sg_page(sg), sg->length));
- sg_page_free(sg_page(sg), sg->length);
+ "sg_remove_scat: k=%d, pg=0x%p\n",
+ k, schp->pages[k]));
+ __free_pages(schp->pages[k], schp->page_order);
}
- }
- kfree(schp->buffer);
- }
- memset(schp, 0, sizeof (*schp));
-}
-static int
-sg_read_xfer(Sg_request * srp)
-{
- sg_io_hdr_t *hp = &srp->header;
- Sg_scatter_hold *schp = &srp->data;
- struct scatterlist *sg = schp->buffer;
- int num_xfer = 0;
- int j, k, onum, usglen, ksglen, res;
- int iovec_count = (int) hp->iovec_count;
- int dxfer_dir = hp->dxfer_direction;
- unsigned char *p;
- unsigned char __user *up;
- int new_interface = ('\0' == hp->interface_id) ? 0 : 1;
-
- if ((SG_DXFER_UNKNOWN == dxfer_dir) || (SG_DXFER_FROM_DEV == dxfer_dir)
- || (SG_DXFER_TO_FROM_DEV == dxfer_dir)) {
- num_xfer = hp->dxfer_len;
- if (schp->bufflen < num_xfer)
- num_xfer = schp->bufflen;
- }
- if ((num_xfer <= 0) || (schp->dio_in_use) ||
- (new_interface
- && ((SG_FLAG_NO_DXFER | SG_FLAG_MMAP_IO) & hp->flags)))
- return 0;
-
- SCSI_LOG_TIMEOUT(4, printk("sg_read_xfer: num_xfer=%d, iovec_count=%d, k_use_sg=%d\n",
- num_xfer, iovec_count, schp->k_use_sg));
- if (iovec_count) {
- onum = iovec_count;
- if (!access_ok(VERIFY_READ, hp->dxferp, SZ_SG_IOVEC * onum))
- return -EFAULT;
- } else
- onum = 1;
-
- p = page_address(sg_page(sg));
- ksglen = sg->length;
- for (j = 0, k = 0; j < onum; ++j) {
- res = sg_u_iovec(hp, iovec_count, j, 0, &usglen, &up);
- if (res)
- return res;
-
- for (; p; sg = sg_next(sg), ksglen = sg->length,
- p = page_address(sg_page(sg))) {
- if (usglen <= 0)
- break;
- if (ksglen > usglen) {
- if (usglen >= num_xfer) {
- if (__copy_to_user(up, p, num_xfer))
- return -EFAULT;
- return 0;
- }
- if (__copy_to_user(up, p, usglen))
- return -EFAULT;
- p += usglen;
- ksglen -= usglen;
- break;
- } else {
- if (ksglen >= num_xfer) {
- if (__copy_to_user(up, p, num_xfer))
- return -EFAULT;
- return 0;
- }
- if (__copy_to_user(up, p, ksglen))
- return -EFAULT;
- up += ksglen;
- usglen -= ksglen;
- }
- ++k;
- if (k >= schp->k_use_sg)
- return 0;
+ kfree(schp->pages);
}
}
-
- return 0;
+ memset(schp, 0, sizeof (*schp));
}
static int
sg_read_oxfer(Sg_request * srp, char __user *outp, int num_read_xfer)
{
Sg_scatter_hold *schp = &srp->data;
- struct scatterlist *sg = schp->buffer;
int k, num;
SCSI_LOG_TIMEOUT(4, printk("sg_read_oxfer: num_read_xfer=%d\n",
@@ -2134,15 +1840,15 @@ sg_read_oxfer(Sg_request * srp, char __user *outp, int num_read_xfer)
if ((!outp) || (num_read_xfer <= 0))
return 0;
- for (k = 0; (k < schp->k_use_sg) && sg_page(sg); ++k, sg = sg_next(sg)) {
- num = sg->length;
+ num = 1 << (PAGE_SHIFT + schp->page_order);
+ for (k = 0; k < schp->k_use_sg && schp->pages[k]; k++) {
if (num > num_read_xfer) {
- if (__copy_to_user(outp, page_address(sg_page(sg)),
+ if (__copy_to_user(outp, page_address(schp->pages[k]),
num_read_xfer))
return -EFAULT;
break;
} else {
- if (__copy_to_user(outp, page_address(sg_page(sg)),
+ if (__copy_to_user(outp, page_address(schp->pages[k]),
num))
return -EFAULT;
num_read_xfer -= num;
@@ -2177,24 +1883,21 @@ sg_link_reserve(Sg_fd * sfp, Sg_request * srp, int size)
{
Sg_scatter_hold *req_schp = &srp->data;
Sg_scatter_hold *rsv_schp = &sfp->reserve;
- struct scatterlist *sg = rsv_schp->buffer;
int k, num, rem;
srp->res_used = 1;
SCSI_LOG_TIMEOUT(4, printk("sg_link_reserve: size=%d\n", size));
rem = size;
- for (k = 0; k < rsv_schp->k_use_sg; ++k, sg = sg_next(sg)) {
- num = sg->length;
+ num = 1 << (PAGE_SHIFT + rsv_schp->page_order);
+ for (k = 0; k < rsv_schp->k_use_sg; k++) {
if (rem <= num) {
- sfp->save_scat_len = num;
- sg->length = rem;
req_schp->k_use_sg = k + 1;
req_schp->sglist_len = rsv_schp->sglist_len;
- req_schp->buffer = rsv_schp->buffer;
+ req_schp->pages = rsv_schp->pages;
req_schp->bufflen = size;
- req_schp->b_malloc_len = rsv_schp->b_malloc_len;
+ req_schp->page_order = rsv_schp->page_order;
break;
} else
rem -= num;
@@ -2208,22 +1911,13 @@ static void
sg_unlink_reserve(Sg_fd * sfp, Sg_request * srp)
{
Sg_scatter_hold *req_schp = &srp->data;
- Sg_scatter_hold *rsv_schp = &sfp->reserve;
SCSI_LOG_TIMEOUT(4, printk("sg_unlink_reserve: req->k_use_sg=%d\n",
(int) req_schp->k_use_sg));
- if ((rsv_schp->k_use_sg > 0) && (req_schp->k_use_sg > 0)) {
- struct scatterlist *sg = rsv_schp->buffer;
-
- if (sfp->save_scat_len > 0)
- (sg + (req_schp->k_use_sg - 1))->length =
- (unsigned) sfp->save_scat_len;
- else
- SCSI_LOG_TIMEOUT(1, printk ("sg_unlink_reserve: BAD save_scat_len\n"));
- }
req_schp->k_use_sg = 0;
req_schp->bufflen = 0;
- req_schp->buffer = NULL;
+ req_schp->pages = NULL;
+ req_schp->page_order = 0;
req_schp->sglist_len = 0;
sfp->save_scat_len = 0;
srp->res_used = 0;
@@ -2481,53 +2175,6 @@ sg_res_in_use(Sg_fd * sfp)
return srp ? 1 : 0;
}
-/* The size fetched (value output via retSzp) set when non-NULL return */
-static struct page *
-sg_page_malloc(int rqSz, int lowDma, int *retSzp)
-{
- struct page *resp = NULL;
- gfp_t page_mask;
- int order, a_size;
- int resSz;
-
- if ((rqSz <= 0) || (NULL == retSzp))
- return resp;
-
- if (lowDma)
- page_mask = GFP_ATOMIC | GFP_DMA | __GFP_COMP | __GFP_NOWARN;
- else
- page_mask = GFP_ATOMIC | __GFP_COMP | __GFP_NOWARN;
-
- for (order = 0, a_size = PAGE_SIZE; a_size < rqSz;
- order++, a_size <<= 1) ;
- resSz = a_size; /* rounded up if necessary */
- resp = alloc_pages(page_mask, order);
- while ((!resp) && order) {
- --order;
- a_size >>= 1; /* divide by 2, until PAGE_SIZE */
- resp = alloc_pages(page_mask, order); /* try half */
- resSz = a_size;
- }
- if (resp) {
- if (!capable(CAP_SYS_ADMIN) || !capable(CAP_SYS_RAWIO))
- memset(page_address(resp), 0, resSz);
- *retSzp = resSz;
- }
- return resp;
-}
-
-static void
-sg_page_free(struct page *page, int size)
-{
- int order, a_size;
-
- if (!page)
- return;
- for (order = 0, a_size = PAGE_SIZE; a_size < size;
- order++, a_size <<= 1) ;
- __free_pages(page, order);
-}
-
#ifdef CONFIG_SCSI_PROC_FS
static int
sg_idr_max_id(int id, void *p, void *data)
diff --git a/drivers/scsi/sr.c b/drivers/scsi/sr.c
index 27f5bfd1def..0f17009c99d 100644
--- a/drivers/scsi/sr.c
+++ b/drivers/scsi/sr.c
@@ -331,7 +331,7 @@ static int sr_done(struct scsi_cmnd *SCpnt)
static int sr_prep_fn(struct request_queue *q, struct request *rq)
{
- int block=0, this_count, s_size, timeout = SR_TIMEOUT;
+ int block = 0, this_count, s_size;
struct scsi_cd *cd;
struct scsi_cmnd *SCpnt;
struct scsi_device *sdp = q->queuedata;
@@ -461,7 +461,6 @@ static int sr_prep_fn(struct request_queue *q, struct request *rq)
SCpnt->transfersize = cd->device->sector_size;
SCpnt->underflow = this_count << 9;
SCpnt->allowed = MAX_RETRIES;
- SCpnt->timeout_per_command = timeout;
/*
* This indicates that the command is ready from our end to be
@@ -620,6 +619,8 @@ static int sr_probe(struct device *dev)
disk->fops = &sr_bdops;
disk->flags = GENHD_FL_CD;
+ blk_queue_rq_timeout(sdev->request_queue, SR_TIMEOUT);
+
cd->device = sdev;
cd->disk = disk;
cd->driver = &sr_template;
@@ -878,7 +879,7 @@ static void sr_kref_release(struct kref *kref)
struct gendisk *disk = cd->disk;
spin_lock(&sr_index_lock);
- clear_bit(disk->first_minor, sr_index_bits);
+ clear_bit(MINOR(disk_devt(disk)), sr_index_bits);
spin_unlock(&sr_index_lock);
unregister_cdrom(&cd->cdi);
diff --git a/drivers/scsi/sym53c8xx_2/sym_glue.c b/drivers/scsi/sym53c8xx_2/sym_glue.c
index d39107b7669..f4e6cde1fd0 100644
--- a/drivers/scsi/sym53c8xx_2/sym_glue.c
+++ b/drivers/scsi/sym53c8xx_2/sym_glue.c
@@ -519,8 +519,8 @@ static int sym53c8xx_queue_command(struct scsi_cmnd *cmd,
* Shorten our settle_time if needed for
* this command not to time out.
*/
- if (np->s.settle_time_valid && cmd->timeout_per_command) {
- unsigned long tlimit = jiffies + cmd->timeout_per_command;
+ if (np->s.settle_time_valid && cmd->request->timeout) {
+ unsigned long tlimit = jiffies + cmd->request->timeout;
tlimit -= SYM_CONF_TIMER_INTERVAL*2;
if (time_after(np->s.settle_time, tlimit)) {
np->s.settle_time = tlimit;
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-22 14:03:00 +0000