Commit 523ec773 authored by Andrew Vasquez's avatar Andrew Vasquez Committed by James Bottomley
Browse files

[SCSI] qla2xxx: Add midlayer target/device reset support.



Now that infrastructure is present within the midlayer and there
is a clear distinction between what is expected from a device and
target reset, convert the current device-reset codes to a
target-reset, and add codes to perform a proper device-reset (LUN
reset).

In the process of adding reset support, collapse and consolidate
large sections of mailbox-command (TMF issuance) codes,
generalize the two 'wait-for-commands-to-complete' functions, and
add a generic-reset routine for use by midlayer reset functions.
Signed-off-by: default avatarAndrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@HansenPartnership.com>
parent 3fe7cfb9
......@@ -2062,7 +2062,8 @@ struct isp_operations {
void (*disable_intrs) (struct scsi_qla_host *);
int (*abort_command) (struct scsi_qla_host *, srb_t *);
int (*abort_target) (struct fc_port *);
int (*target_reset) (struct fc_port *, unsigned int);
int (*lun_reset) (struct fc_port *, unsigned int);
int (*fabric_login) (struct scsi_qla_host *, uint16_t, uint8_t,
uint8_t, uint8_t, uint16_t *, uint8_t);
int (*fabric_logout) (struct scsi_qla_host *, uint16_t, uint8_t,
......
......@@ -719,7 +719,7 @@ struct tsk_mgmt_entry {
uint16_t timeout; /* Command timeout. */
uint8_t lun[8]; /* FCP LUN (BE). */
struct scsi_lun lun; /* FCP LUN (BE). */
uint32_t control_flags; /* Control Flags. */
#define TCF_NOTMCMD_TO_TARGET BIT_31
......
......@@ -153,7 +153,10 @@ extern int
qla2x00_abort_command(scsi_qla_host_t *, srb_t *);
extern int
qla2x00_abort_target(fc_port_t *);
qla2x00_abort_target(struct fc_port *, unsigned int);
extern int
qla2x00_lun_reset(struct fc_port *, unsigned int);
extern int
qla2x00_get_adapter_id(scsi_qla_host_t *, uint16_t *, uint8_t *, uint8_t *,
......@@ -219,7 +222,8 @@ qla24xx_get_isp_stats(scsi_qla_host_t *, struct link_statistics *,
dma_addr_t);
extern int qla24xx_abort_command(scsi_qla_host_t *, srb_t *);
extern int qla24xx_abort_target(fc_port_t *);
extern int qla24xx_abort_target(struct fc_port *, unsigned int);
extern int qla24xx_lun_reset(struct fc_port *, unsigned int);
extern int
qla2x00_set_serdes_params(scsi_qla_host_t *, uint16_t, uint16_t, uint16_t);
......
......@@ -784,35 +784,20 @@ qla2x00_abort_command(scsi_qla_host_t *ha, srb_t *sp)
return rval;
}
/*
* qla2x00_abort_target
* Issue abort target mailbox command.
*
* Input:
* ha = adapter block pointer.
*
* Returns:
* qla2x00 local function return status code.
*
* Context:
* Kernel context.
*/
int
qla2x00_abort_target(fc_port_t *fcport)
qla2x00_abort_target(struct fc_port *fcport, unsigned int l)
{
int rval;
int rval, rval2;
mbx_cmd_t mc;
mbx_cmd_t *mcp = &mc;
scsi_qla_host_t *ha;
if (fcport == NULL)
return 0;
DEBUG11(printk("%s(%ld): entered.\n", __func__, fcport->ha->host_no));
l = l;
ha = fcport->ha;
mcp->mb[0] = MBC_ABORT_TARGET;
mcp->out_mb = MBX_2|MBX_1|MBX_0;
mcp->out_mb = MBX_9|MBX_2|MBX_1|MBX_0;
if (HAS_EXTENDED_IDS(ha)) {
mcp->mb[1] = fcport->loop_id;
mcp->mb[10] = 0;
......@@ -821,22 +806,66 @@ qla2x00_abort_target(fc_port_t *fcport)
mcp->mb[1] = fcport->loop_id << 8;
}
mcp->mb[2] = ha->loop_reset_delay;
mcp->mb[9] = ha->vp_idx;
mcp->in_mb = MBX_0;
mcp->tov = 30;
mcp->flags = 0;
rval = qla2x00_mailbox_command(ha, mcp);
if (rval != QLA_SUCCESS) {
DEBUG2_3_11(printk("%s(%ld): failed=%x.\n", __func__,
ha->host_no, rval));
}
/* Issue marker IOCB. */
rval2 = qla2x00_marker(ha, fcport->loop_id, 0, MK_SYNC_ID);
if (rval2 != QLA_SUCCESS) {
DEBUG2_3_11(printk("%s(%ld): failed to issue Marker IOCB "
"(%x).\n", __func__, ha->host_no, rval2));
} else {
DEBUG11(printk("%s(%ld): done.\n", __func__, ha->host_no));
}
return rval;
}
int
qla2x00_lun_reset(struct fc_port *fcport, unsigned int l)
{
int rval, rval2;
mbx_cmd_t mc;
mbx_cmd_t *mcp = &mc;
scsi_qla_host_t *ha;
DEBUG11(printk("%s(%ld): entered.\n", __func__, fcport->ha->host_no));
/* Issue marker command. */
ha->marker_needed = 1;
ha = fcport->ha;
mcp->mb[0] = MBC_LUN_RESET;
mcp->out_mb = MBX_9|MBX_3|MBX_2|MBX_1|MBX_0;
if (HAS_EXTENDED_IDS(ha))
mcp->mb[1] = fcport->loop_id;
else
mcp->mb[1] = fcport->loop_id << 8;
mcp->mb[2] = l;
mcp->mb[3] = 0;
mcp->mb[9] = ha->vp_idx;
mcp->in_mb = MBX_0;
mcp->tov = 30;
mcp->flags = 0;
rval = qla2x00_mailbox_command(ha, mcp);
if (rval != QLA_SUCCESS) {
DEBUG2_3_11(printk("qla2x00_abort_target(%ld): failed=%x.\n",
DEBUG2_3_11(printk("%s(%ld): failed=%x.\n", __func__,
ha->host_no, rval));
}
/* Issue marker IOCB. */
rval2 = qla2x00_marker(ha, fcport->loop_id, l, MK_SYNC_ID_LUN);
if (rval2 != QLA_SUCCESS) {
DEBUG2_3_11(printk("%s(%ld): failed to issue Marker IOCB "
"(%x).\n", __func__, ha->host_no, rval2));
} else {
/*EMPTY*/
DEBUG11(printk("qla2x00_abort_target(%ld): done.\n",
ha->host_no));
DEBUG11(printk("%s(%ld): done.\n", __func__, ha->host_no));
}
return rval;
......@@ -2186,17 +2215,15 @@ struct tsk_mgmt_cmd {
} p;
};
int
qla24xx_abort_target(fc_port_t *fcport)
static int
__qla24xx_issue_tmf(char *name, uint32_t type, struct fc_port *fcport,
unsigned int l)
{
int rval;
int rval, rval2;
struct tsk_mgmt_cmd *tsk;
dma_addr_t tsk_dma;
scsi_qla_host_t *ha, *pha;
if (fcport == NULL)
return 0;
DEBUG11(printk("%s(%ld): entered.\n", __func__, fcport->ha->host_no));
ha = fcport->ha;
......@@ -2213,47 +2240,61 @@ qla24xx_abort_target(fc_port_t *fcport)
tsk->p.tsk.entry_count = 1;
tsk->p.tsk.nport_handle = cpu_to_le16(fcport->loop_id);
tsk->p.tsk.timeout = cpu_to_le16(ha->r_a_tov / 10 * 2);
tsk->p.tsk.control_flags = __constant_cpu_to_le32(TCF_TARGET_RESET);
tsk->p.tsk.control_flags = cpu_to_le32(type);
tsk->p.tsk.port_id[0] = fcport->d_id.b.al_pa;
tsk->p.tsk.port_id[1] = fcport->d_id.b.area;
tsk->p.tsk.port_id[2] = fcport->d_id.b.domain;
tsk->p.tsk.vp_index = fcport->vp_idx;
if (type == TCF_LUN_RESET) {
int_to_scsilun(l, &tsk->p.tsk.lun);
host_to_fcp_swap((uint8_t *)&tsk->p.tsk.lun,
sizeof(tsk->p.tsk.lun));
}
rval = qla2x00_issue_iocb(ha, tsk, tsk_dma, 0);
if (rval != QLA_SUCCESS) {
DEBUG2_3_11(printk("%s(%ld): failed to issue Target Reset IOCB "
"(%x).\n", __func__, ha->host_no, rval));
goto atarget_done;
DEBUG2_3_11(printk("%s(%ld): failed to issue %s Reset IOCB "
"(%x).\n", __func__, ha->host_no, name, rval));
} else if (tsk->p.sts.entry_status != 0) {
DEBUG2_3_11(printk("%s(%ld): failed to complete IOCB "
"-- error status (%x).\n", __func__, ha->host_no,
tsk->p.sts.entry_status));
rval = QLA_FUNCTION_FAILED;
goto atarget_done;
} else if (tsk->p.sts.comp_status !=
__constant_cpu_to_le16(CS_COMPLETE)) {
DEBUG2_3_11(printk("%s(%ld): failed to complete IOCB "
"-- completion status (%x).\n", __func__,
ha->host_no, le16_to_cpu(tsk->p.sts.comp_status)));
rval = QLA_FUNCTION_FAILED;
goto atarget_done;
}
/* Issue marker IOCB. */
rval = qla2x00_marker(ha, fcport->loop_id, 0, MK_SYNC_ID);
if (rval != QLA_SUCCESS) {
rval2 = qla2x00_marker(ha, fcport->loop_id, l,
type == TCF_LUN_RESET ? MK_SYNC_ID_LUN: MK_SYNC_ID);
if (rval2 != QLA_SUCCESS) {
DEBUG2_3_11(printk("%s(%ld): failed to issue Marker IOCB "
"(%x).\n", __func__, ha->host_no, rval));
"(%x).\n", __func__, ha->host_no, rval2));
} else {
DEBUG11(printk("%s(%ld): done.\n", __func__, ha->host_no));
}
atarget_done:
dma_pool_free(pha->s_dma_pool, tsk, tsk_dma);
return rval;
}
int
qla24xx_abort_target(struct fc_port *fcport, unsigned int l)
{
return __qla24xx_issue_tmf("Target", TCF_TARGET_RESET, fcport, l);
}
int
qla24xx_lun_reset(struct fc_port *fcport, unsigned int l)
{
return __qla24xx_issue_tmf("Lun", TCF_LUN_RESET, fcport, l);
}
#if 0
int
......
......@@ -100,6 +100,7 @@ static int qla24xx_queuecommand(struct scsi_cmnd *cmd,
void (*fn)(struct scsi_cmnd *));
static int qla2xxx_eh_abort(struct scsi_cmnd *);
static int qla2xxx_eh_device_reset(struct scsi_cmnd *);
static int qla2xxx_eh_target_reset(struct scsi_cmnd *);
static int qla2xxx_eh_bus_reset(struct scsi_cmnd *);
static int qla2xxx_eh_host_reset(struct scsi_cmnd *);
......@@ -113,6 +114,7 @@ static struct scsi_host_template qla2x00_driver_template = {
.eh_abort_handler = qla2xxx_eh_abort,
.eh_device_reset_handler = qla2xxx_eh_device_reset,
.eh_target_reset_handler = qla2xxx_eh_target_reset,
.eh_bus_reset_handler = qla2xxx_eh_bus_reset,
.eh_host_reset_handler = qla2xxx_eh_host_reset,
......@@ -144,6 +146,7 @@ struct scsi_host_template qla24xx_driver_template = {
.eh_abort_handler = qla2xxx_eh_abort,
.eh_device_reset_handler = qla2xxx_eh_device_reset,
.eh_target_reset_handler = qla2xxx_eh_target_reset,
.eh_bus_reset_handler = qla2xxx_eh_bus_reset,
.eh_host_reset_handler = qla2xxx_eh_host_reset,
......@@ -566,8 +569,6 @@ qla2x00_wait_for_hba_online(scsi_qla_host_t *ha)
else
return_status = QLA_FUNCTION_FAILED;
DEBUG2(printk("%s return_status=%d\n",__func__,return_status));
return (return_status);
}
......@@ -714,181 +715,122 @@ qla2xxx_eh_abort(struct scsi_cmnd *cmd)
return ret;
}
/**************************************************************************
* qla2x00_eh_wait_for_pending_target_commands
*
* Description:
* Waits for all the commands to come back from the specified target.
*
* Input:
* ha - pointer to scsi_qla_host structure.
* t - target
* Returns:
* Either SUCCESS or FAILED.
*
* Note:
**************************************************************************/
enum nexus_wait_type {
WAIT_HOST = 0,
WAIT_TARGET,
WAIT_LUN,
};
static int
qla2x00_eh_wait_for_pending_target_commands(scsi_qla_host_t *ha, unsigned int t)
qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha, unsigned int t,
unsigned int l, enum nexus_wait_type type)
{
int cnt;
int status;
srb_t *sp;
struct scsi_cmnd *cmd;
int cnt, match, status;
srb_t *sp;
unsigned long flags;
scsi_qla_host_t *pha = to_qla_parent(ha);
status = 0;
/*
* Waiting for all commands for the designated target in the active
* array
*/
for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
spin_lock_irqsave(&pha->hardware_lock, flags);
status = QLA_SUCCESS;
spin_lock_irqsave(&pha->hardware_lock, flags);
for (cnt = 1; status == QLA_SUCCESS && cnt < MAX_OUTSTANDING_COMMANDS;
cnt++) {
sp = pha->outstanding_cmds[cnt];
if (sp) {
cmd = sp->cmd;
spin_unlock_irqrestore(&pha->hardware_lock, flags);
if (cmd->device->id == t &&
ha->vp_idx == sp->ha->vp_idx) {
if (!qla2x00_eh_wait_on_command(ha, cmd)) {
status = 1;
break;
}
}
} else {
spin_unlock_irqrestore(&pha->hardware_lock, flags);
if (!sp)
continue;
if (ha->vp_idx != sp->ha->vp_idx)
continue;
match = 0;
switch (type) {
case WAIT_HOST:
match = 1;
break;
case WAIT_TARGET:
match = sp->cmd->device->id == t;
break;
case WAIT_LUN:
match = (sp->cmd->device->id == t &&
sp->cmd->device->lun == l);
break;
}
if (!match)
continue;
spin_unlock_irqrestore(&pha->hardware_lock, flags);
status = qla2x00_eh_wait_on_command(ha, sp->cmd);
spin_lock_irqsave(&pha->hardware_lock, flags);
}
return (status);
spin_unlock_irqrestore(&pha->hardware_lock, flags);
return status;
}
static char *reset_errors[] = {
"HBA not online",
"HBA not ready",
"Task management failed",
"Waiting for command completions",
};
/**************************************************************************
* qla2xxx_eh_device_reset
*
* Description:
* The device reset function will reset the target and abort any
* executing commands.
*
* NOTE: The use of SP is undefined within this context. Do *NOT*
* attempt to use this value, even if you determine it is
* non-null.
*
* Input:
* cmd = Linux SCSI command packet of the command that cause the
* bus device reset.
*
* Returns:
* SUCCESS/FAILURE (defined as macro in scsi.h).
*
**************************************************************************/
static int
qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
__qla2xxx_eh_generic_reset(char *name, enum nexus_wait_type type,
struct scsi_cmnd *cmd, int (*do_reset)(struct fc_port *, unsigned int))
{
scsi_qla_host_t *ha = shost_priv(cmd->device->host);
fc_port_t *fcport = (struct fc_port *) cmd->device->hostdata;
int ret = FAILED;
unsigned int id, lun;
unsigned long serial;
int err;
qla2x00_block_error_handler(cmd);
id = cmd->device->id;
lun = cmd->device->lun;
serial = cmd->serial_number;
if (!fcport)
return ret;
return FAILED;
qla_printk(KERN_INFO, ha,
"scsi(%ld:%d:%d): DEVICE RESET ISSUED.\n", ha->host_no, id, lun);
qla_printk(KERN_INFO, ha, "scsi(%ld:%d:%d): %s RESET ISSUED.\n",
ha->host_no, cmd->device->id, cmd->device->lun, name);
err = 0;
if (qla2x00_wait_for_hba_online(ha) != QLA_SUCCESS)
goto eh_dev_reset_done;
if (qla2x00_wait_for_loop_ready(ha) == QLA_SUCCESS) {
if (ha->isp_ops->abort_target(fcport) == 0)
ret = SUCCESS;
} else {
DEBUG2(printk(KERN_INFO
"%s failed: loop not ready\n",__func__));
}
if (ret == FAILED) {
DEBUG3(printk("%s(%ld): device reset failed\n",
__func__, ha->host_no));
qla_printk(KERN_INFO, ha, "%s: device reset failed\n",
__func__);
goto eh_reset_failed;
err = 1;
if (qla2x00_wait_for_loop_ready(ha) != QLA_SUCCESS)
goto eh_reset_failed;
err = 2;
if (do_reset(fcport, cmd->device->lun) != QLA_SUCCESS)
goto eh_reset_failed;
err = 3;
if (qla2x00_eh_wait_for_pending_commands(ha, cmd->device->id,
cmd->device->lun, type) != QLA_SUCCESS)
goto eh_reset_failed;
qla_printk(KERN_INFO, ha, "scsi(%ld:%d:%d): %s RESET SUCCEEDED.\n",
ha->host_no, cmd->device->id, cmd->device->lun, name);
return SUCCESS;
eh_reset_failed:
qla_printk(KERN_INFO, ha, "scsi(%ld:%d:%d): %s RESET FAILED: %s.\n",
ha->host_no, cmd->device->id, cmd->device->lun, name,
reset_errors[err]);
return FAILED;
}
goto eh_dev_reset_done;
}
static int
qla2xxx_eh_device_reset(struct scsi_cmnd *cmd)
{
scsi_qla_host_t *ha = shost_priv(cmd->device->host);
/* Flush outstanding commands. */
if (qla2x00_eh_wait_for_pending_target_commands(ha, id))
ret = FAILED;
if (ret == FAILED) {
DEBUG3(printk("%s(%ld): failed while waiting for commands\n",
__func__, ha->host_no));
qla_printk(KERN_INFO, ha,
"%s: failed while waiting for commands\n", __func__);
} else
qla_printk(KERN_INFO, ha,
"scsi(%ld:%d:%d): DEVICE RESET SUCCEEDED.\n", ha->host_no,
id, lun);
eh_dev_reset_done:
return ret;
return __qla2xxx_eh_generic_reset("DEVICE", WAIT_LUN, cmd,
ha->isp_ops->lun_reset);
}
/**************************************************************************
* qla2x00_eh_wait_for_pending_commands
*
* Description:
* Waits for all the commands to come back from the specified host.
*
* Input:
* ha - pointer to scsi_qla_host structure.
*
* Returns:
* 1 : SUCCESS
* 0 : FAILED
*
* Note:
**************************************************************************/
static int
qla2x00_eh_wait_for_pending_commands(scsi_qla_host_t *ha)
qla2xxx_eh_target_reset(struct scsi_cmnd *cmd)
{
int cnt;
int status;
srb_t *sp;
struct scsi_cmnd *cmd;
unsigned long flags;
status = 1;
scsi_qla_host_t *ha = shost_priv(cmd->device->host);
/*
* Waiting for all commands for the designated target in the active
* array
*/
for (cnt = 1; cnt < MAX_OUTSTANDING_COMMANDS; cnt++) {
spin_lock_irqsave(&ha->hardware_lock, flags);
sp = ha->outstanding_cmds[cnt];
if (sp) {
cmd = sp->cmd;
spin_unlock_irqrestore(&ha->hardware_lock, flags);
status = qla2x00_eh_wait_on_command(ha, cmd);
if (status == 0)
break;
}
else {
spin_unlock_irqrestore(&ha->hardware_lock, flags);
}
}
return (status);
return __qla2xxx_eh_generic_reset("TARGET", WAIT_TARGET, cmd,
ha->isp_ops->target_reset);
}
/**************************************************************************
* qla2xxx_eh_bus_reset
*
......@@ -939,7 +881,8 @@ qla2xxx_eh_bus_reset(struct scsi_cmnd *cmd)
goto eh_bus_reset_done;
/* Flush outstanding commands. */
if (!qla2x00_eh_wait_for_pending_commands(pha))
if (qla2x00_eh_wait_for_pending_commands(pha, 0, 0, WAIT_HOST) !=
QLA_SUCCESS)
ret = FAILED;
eh_bus_reset_done:
......@@ -1010,7 +953,8 @@ qla2xxx_eh_host_reset(struct scsi_cmnd *cmd)
clear_bit(ABORT_ISP_ACTIVE, &pha->dpc_flags);
/* Waiting for our command in done_queue to be returned to OS.*/
if (qla2x00_eh_wait_for_pending_commands(pha))
if (qla2x00_eh_wait_for_pending_commands(pha, 0, 0, WAIT_HOST) ==
QLA_SUCCESS)
ret = SUCCESS;
if (ha->parent)
......@@ -1066,7 +1010,7 @@ qla2x00_loop_reset(scsi_qla_host_t *ha)
if (fcport->port_type != FCT_TARGET)
continue;
ret = ha->isp_ops->abort_target(fcport);
ret = ha->isp_ops->target_reset(fcport, 0);
if (ret != QLA_SUCCESS) {
DEBUG2_3(printk("%s(%ld): bus_reset failed: "
"target_reset=%d d_id=%x.\n", __func__,
......@@ -1258,7 +1202,8 @@ static struct isp_operations qla2100_isp_ops = {
.enable_intrs = qla2x00_enable_intrs,
.disable_intrs = qla2x00_disable_intrs,
.abort_command = qla2x00_abort_command,
.abort_target = qla2x00_abort_target,
.target_reset = qla2x00_abort_target,
.lun_reset = qla2x00_lun_reset,
.fabric_login = qla2x00_login_fabric,
.fabric_logout = qla2x00_fabric_logout,
.calc_req_entries = qla2x00_calc_iocbs_32,
......@@ -1291,7 +1236,8 @@ static struct isp_operations qla2300_isp_ops = {
.enable_intrs = qla2x00_enable_intrs,
.disable_intrs = qla2x00_disable_intrs,
.abort_command = qla2x00_abort_command,
.abort_target = qla2x00_abort_target,
.target_reset = qla2x00_abort_target,
.lun_reset = qla2x00_lun_reset,
.fabric_login = qla2x00_login_fabric,
.fabric_logout = qla2x00_fabric_logout,
.calc_req_entries = qla2x00_calc_iocbs_32,
......@@ -1324,7 +1270,8 @@ static struct isp_operations qla24xx_isp_ops = {
.enable_intrs = qla24xx_enable_intrs,
.disable_intrs = qla24xx_disable_intrs,
.abort_command = qla24xx_abort_command,
.abort_target = qla24xx_abort_target,
.target_reset = qla24xx_abort_target,
.lun_reset = qla24xx_lun_reset,
.fabric_login = qla24xx_login_fabric,
.fabric_logout = qla24xx_fabric_logout,
.calc_req_entries = NULL,
......@@ -1357,7 +1304,8 @@ static struct isp_operations qla25xx_isp_ops = {
.enable_intrs = qla24xx_enable_intrs,
.disable_intrs = qla24xx_disable_intrs,
.abort_command = qla24xx_abort_command,
.abort_target = qla24xx_abort_target,
.target_reset = qla24xx_abort_target,
.lun_reset = qla24xx_lun_reset,
.fabric_login = qla24xx_login_fabric,
.fabric_logout = qla24xx_fabric_logout,