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scsi: qla4xxx: skip error recovery in case of register disconnect. 

A system crashes when continuously removing/re-adding the storage
controller.

Signed-off-by: Manish Rangankar <manish.rangankar@cavium.com>
Reviewed-by: Ewan D. Milne <emilne@redhat.com>
Reviewed-by: Tomas Henzl <thenzl@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Manish Rangankar 2018-02-11 22:48:41 -08:00 committed by Martin K. Petersen
parent 00c20cdc79
commit 1bc5ad3a6a
2 changed files with 48 additions and 0 deletions
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2
drivers/scsi/qla4xxx/ql4_def.h
View File

@ -168,6 +168,8 @@
#define DEV_DB_NON_PERSISTENT 0
#define DEV_DB_PERSISTENT 1
#define QL4_ISP_REG_DISCONNECT 0xffffffffU
#define COPY_ISID(dst_isid, src_isid) { \
int i, j; \
for (i = 0, j = ISID_SIZE - 1; i < ISID_SIZE;) \

46
drivers/scsi/qla4xxx/ql4_os.c
View File

@ -262,6 +262,24 @@ static struct iscsi_transport qla4xxx_iscsi_transport = {
static struct scsi_transport_template *qla4xxx_scsi_transport;
static int qla4xxx_isp_check_reg(struct scsi_qla_host *ha)
{
u32 reg_val = 0;
int rval = QLA_SUCCESS;
if (is_qla8022(ha))
reg_val = readl(&ha->qla4_82xx_reg->host_status);
else if (is_qla8032(ha) || is_qla8042(ha))
reg_val = qla4_8xxx_rd_direct(ha, QLA8XXX_PEG_ALIVE_COUNTER);
else
reg_val = readw(&ha->reg->ctrl_status);
if (reg_val == QL4_ISP_REG_DISCONNECT)
rval = QLA_ERROR;
return rval;
}
static int qla4xxx_send_ping(struct Scsi_Host *shost, uint32_t iface_num,
uint32_t iface_type, uint32_t payload_size,
uint32_t pid, struct sockaddr *dst_addr)
@ -9186,10 +9204,17 @@ static int qla4xxx_eh_abort(struct scsi_cmnd *cmd)
struct srb *srb = NULL;
int ret = SUCCESS;
int wait = 0;
int rval;
ql4_printk(KERN_INFO, ha, "scsi%ld:%d:%llu: Abort command issued cmd=%p, cdb=0x%x\n",
ha->host_no, id, lun, cmd, cmd->cmnd[0]);
rval = qla4xxx_isp_check_reg(ha);
if (rval != QLA_SUCCESS) {
ql4_printk(KERN_INFO, ha, "PCI/Register disconnect, exiting.\n");
return FAILED;
}
spin_lock_irqsave(&ha->hardware_lock, flags);
srb = (struct srb *) CMD_SP(cmd);
if (!srb) {
@ -9241,6 +9266,7 @@ static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd)
struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
struct ddb_entry *ddb_entry = cmd->device->hostdata;
int ret = FAILED, stat;
int rval;
if (!ddb_entry)
return ret;
@ -9260,6 +9286,12 @@ static int qla4xxx_eh_device_reset(struct scsi_cmnd *cmd)
cmd, jiffies, cmd->request->timeout / HZ,
ha->dpc_flags, cmd->result, cmd->allowed));
rval = qla4xxx_isp_check_reg(ha);
if (rval != QLA_SUCCESS) {
ql4_printk(KERN_INFO, ha, "PCI/Register disconnect, exiting.\n");
return FAILED;
}
/* FIXME: wait for hba to go online */
stat = qla4xxx_reset_lun(ha, ddb_entry, cmd->device->lun);
if (stat != QLA_SUCCESS) {
@ -9303,6 +9335,7 @@ static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd)
struct scsi_qla_host *ha = to_qla_host(cmd->device->host);
struct ddb_entry *ddb_entry = cmd->device->hostdata;
int stat, ret;
int rval;
if (!ddb_entry)
return FAILED;
@ -9320,6 +9353,12 @@ static int qla4xxx_eh_target_reset(struct scsi_cmnd *cmd)
ha->host_no, cmd, jiffies, cmd->request->timeout / HZ,
ha->dpc_flags, cmd->result, cmd->allowed));
rval = qla4xxx_isp_check_reg(ha);
if (rval != QLA_SUCCESS) {
ql4_printk(KERN_INFO, ha, "PCI/Register disconnect, exiting.\n");
return FAILED;
}
stat = qla4xxx_reset_target(ha, ddb_entry);
if (stat != QLA_SUCCESS) {
starget_printk(KERN_INFO, scsi_target(cmd->device),
@ -9374,9 +9413,16 @@ static int qla4xxx_eh_host_reset(struct scsi_cmnd *cmd)
{
int return_status = FAILED;
struct scsi_qla_host *ha;
int rval;
ha = to_qla_host(cmd->device->host);
rval = qla4xxx_isp_check_reg(ha);
if (rval != QLA_SUCCESS) {
ql4_printk(KERN_INFO, ha, "PCI/Register disconnect, exiting.\n");
return FAILED;
}
if ((is_qla8032(ha) || is_qla8042(ha)) && ql4xdontresethba)
qla4_83xx_set_idc_dontreset(ha);