From: Arun Easi <aeasi@marvell.com>
Date: Tue, 31 Mar 2020 03:40:13 -0700
Subject: scsi: qla2xxx: Fix MPI failure AEN (8200) handling
Patch-mainline: v5.8-rc1
Git-commit: cbb01c2f2f630f1497f703c51ff21538ae2d86b8
References: bsc#1171688 bsc#1174003
Today, upon an MPI failure AEN, on top of collecting an MPI dump, a regular
firmware dump is also taken and then chip reset. This is disruptive to IOs
and not required. Make the firmware dump collection, followed by chip
reset, optional (not done by default).
Firmware dump buffer and MPI dump buffer are independent of each
other with this change and each can have dump that was taken at two
different times for two different issues. The MPI dump is saved in a
separate buffer and is retrieved differently from firmware dump.
To collect full dump on MPI failure AEN, a module parameter is
introduced:
ql2xfulldump_on_mpifail (default: 0)
Link: https://lore.kernel.org/r/20200331104015.24868-2-njavali@marvell.com
Reported-by: kbuild test robot <lkp@intel.com>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Arun Easi <aeasi@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Daniel Wagner <dwagner@suse.de>
---
drivers/scsi/qla2xxx/qla_attr.c | 30 +++++++++-
drivers/scsi/qla2xxx/qla_def.h | 13 ++++
drivers/scsi/qla2xxx/qla_gbl.h | 3 +
drivers/scsi/qla2xxx/qla_init.c | 2
drivers/scsi/qla2xxx/qla_isr.c | 54 ++++++++++++------
drivers/scsi/qla2xxx/qla_os.c | 6 ++
drivers/scsi/qla2xxx/qla_tmpl.c | 119 ++++++++++++++++++++++++++++++++--------
7 files changed, 185 insertions(+), 42 deletions(-)
--- a/drivers/scsi/qla2xxx/qla_attr.c
+++ b/drivers/scsi/qla2xxx/qla_attr.c
@@ -26,7 +26,8 @@ qla2x00_sysfs_read_fw_dump(struct file *
struct qla_hw_data *ha = vha->hw;
int rval = 0;
- if (!(ha->fw_dump_reading || ha->mctp_dump_reading))
+ if (!(ha->fw_dump_reading || ha->mctp_dump_reading ||
+ ha->mpi_fw_dump_reading))
return 0;
mutex_lock(&ha->optrom_mutex);
@@ -42,6 +43,10 @@ qla2x00_sysfs_read_fw_dump(struct file *
} else if (ha->mctp_dumped && ha->mctp_dump_reading) {
rval = memory_read_from_buffer(buf, count, &off, ha->mctp_dump,
MCTP_DUMP_SIZE);
+ } else if (ha->mpi_fw_dumped && ha->mpi_fw_dump_reading) {
+ rval = memory_read_from_buffer(buf, count, &off,
+ ha->mpi_fw_dump,
+ ha->mpi_fw_dump_len);
} else if (ha->fw_dump_reading) {
rval = memory_read_from_buffer(buf, count, &off, ha->fw_dump,
ha->fw_dump_len);
@@ -103,7 +108,6 @@ qla2x00_sysfs_write_fw_dump(struct file
qla82xx_set_reset_owner(vha);
qla8044_idc_unlock(ha);
} else {
- ha->fw_dump_mpi = 1;
qla2x00_system_error(vha);
}
break;
@@ -137,6 +141,22 @@ qla2x00_sysfs_write_fw_dump(struct file
vha->host_no);
}
break;
+ case 8:
+ if (!ha->mpi_fw_dump_reading)
+ break;
+ ql_log(ql_log_info, vha, 0x70e7,
+ "MPI firmware dump cleared on (%ld).\n", vha->host_no);
+ ha->mpi_fw_dump_reading = 0;
+ ha->mpi_fw_dumped = 0;
+ break;
+ case 9:
+ if (ha->mpi_fw_dumped && !ha->mpi_fw_dump_reading) {
+ ha->mpi_fw_dump_reading = 1;
+ ql_log(ql_log_info, vha, 0x70e8,
+ "Raw MPI firmware dump ready for read on (%ld).\n",
+ vha->host_no);
+ }
+ break;
}
return count;
}
@@ -706,7 +726,8 @@ qla2x00_sysfs_write_reset(struct file *f
scsi_unblock_requests(vha->host);
break;
case 0x2025d:
- if (!IS_QLA81XX(ha) && !IS_QLA83XX(ha))
+ if (!IS_QLA81XX(ha) && !IS_QLA83XX(ha) &&
+ !IS_QLA27XX(ha) && !IS_QLA28XX(ha))
return -EPERM;
ql_log(ql_log_info, vha, 0x706f,
@@ -724,6 +745,8 @@ qla2x00_sysfs_write_reset(struct file *f
qla83xx_idc_audit(vha, IDC_AUDIT_TIMESTAMP);
qla83xx_idc_unlock(vha, 0);
break;
+ } else if (IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
+ qla27xx_reset_mpi(vha);
} else {
/* Make sure FC side is not in reset */
WARN_ON_ONCE(qla2x00_wait_for_hba_online(vha) !=
@@ -737,6 +760,7 @@ qla2x00_sysfs_write_reset(struct file *f
scsi_unblock_requests(vha->host);
break;
}
+ break;
case 0x2025e:
if (!IS_P3P_TYPE(ha) || vha != base_vha) {
ql_log(ql_log_info, vha, 0x7071,
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -3223,6 +3223,7 @@ struct isp_operations {
uint32_t);
void (*fw_dump) (struct scsi_qla_host *, int);
+ void (*mpi_fw_dump)(struct scsi_qla_host *, int);
int (*beacon_on) (struct scsi_qla_host *);
int (*beacon_off) (struct scsi_qla_host *);
@@ -3748,6 +3749,11 @@ struct qlt_hw_data {
#define LEAK_EXCHG_THRESH_HOLD_PERCENT 75 /* 75 percent */
+struct qla_hw_data_stat {
+ u32 num_fw_dump;
+ u32 num_mpi_reset;
+};
+
/*
* Qlogic host adapter specific data structure.
*/
@@ -4230,7 +4236,6 @@ struct qla_hw_data {
uint32_t fw_dump_len;
u32 fw_dump_alloc_len;
bool fw_dumped;
- bool fw_dump_mpi;
unsigned long fw_dump_cap_flags;
#define RISC_PAUSE_CMPL 0
#define DMA_SHUTDOWN_CMPL 1
@@ -4241,6 +4246,10 @@ struct qla_hw_data {
#define ISP_MBX_RDY 6
#define ISP_SOFT_RESET_CMPL 7
int fw_dump_reading;
+ void *mpi_fw_dump;
+ u32 mpi_fw_dump_len;
+ int mpi_fw_dump_reading:1;
+ int mpi_fw_dumped:1;
int prev_minidump_failed;
dma_addr_t eft_dma;
void *eft;
@@ -4454,6 +4463,8 @@ struct qla_hw_data {
uint16_t last_zio_threshold;
#define DEFAULT_ZIO_THRESHOLD 5
+
+ struct qla_hw_data_stat stat;
};
struct active_regions {
--- a/drivers/scsi/qla2xxx/qla_gbl.h
+++ b/drivers/scsi/qla2xxx/qla_gbl.h
@@ -173,6 +173,7 @@ extern int ql2xenablemsix;
extern int qla2xuseresexchforels;
extern int ql2xexlogins;
extern int ql2xdifbundlinginternalbuffers;
+extern int ql2xfulldump_on_mpifail;
extern int qla2x00_loop_reset(scsi_qla_host_t *);
extern void qla2x00_abort_all_cmds(scsi_qla_host_t *, int);
@@ -645,6 +646,7 @@ extern void qla82xx_fw_dump(scsi_qla_hos
extern void qla8044_fw_dump(scsi_qla_host_t *, int);
extern void qla27xx_fwdump(scsi_qla_host_t *, int);
+extern void qla27xx_mpi_fwdump(scsi_qla_host_t *, int);
extern ulong qla27xx_fwdt_calculate_dump_size(struct scsi_qla_host *, void *);
extern int qla27xx_fwdt_template_valid(void *);
extern ulong qla27xx_fwdt_template_size(void *);
@@ -933,5 +935,6 @@ extern void qla24xx_process_purex_list(s
/* nvme.c */
void qla_nvme_unregister_remote_port(struct fc_port *fcport);
+void qla27xx_reset_mpi(scsi_qla_host_t *vha);
void qla_handle_els_plogi_done(scsi_qla_host_t *vha, struct event_arg *ea);
#endif /* _QLA_GBL_H */
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -3341,6 +3341,8 @@ qla2x00_alloc_fw_dump(scsi_qla_host_t *v
dump_size / 1024);
if (IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
+ ha->mpi_fw_dump = (char *)fw_dump +
+ ha->fwdt[1].dump_size;
mutex_unlock(&ha->optrom_mutex);
return;
}
--- a/drivers/scsi/qla2xxx/qla_isr.c
+++ b/drivers/scsi/qla2xxx/qla_isr.c
@@ -756,6 +756,39 @@ qla2x00_find_fcport_by_nportid(scsi_qla_
return NULL;
}
+/* Shall be called only on supported adapters. */
+static void
+qla27xx_handle_8200_aen(scsi_qla_host_t *vha, uint16_t *mb)
+{
+ struct qla_hw_data *ha = vha->hw;
+ bool reset_isp_needed = 0;
+
+ ql_log(ql_log_warn, vha, 0x02f0,
+ "MPI Heartbeat stop. MPI reset is%s needed. "
+ "MB0[%xh] MB1[%xh] MB2[%xh] MB3[%xh]\n",
+ mb[0] & BIT_8 ? "" : " not",
+ mb[0], mb[1], mb[2], mb[3]);
+
+ if ((mb[1] & BIT_8) == 0)
+ return;
+
+ ql_log(ql_log_warn, vha, 0x02f1,
+ "MPI Heartbeat stop. FW dump needed\n");
+
+ if (ql2xfulldump_on_mpifail) {
+ ha->isp_ops->fw_dump(vha, 1);
+ reset_isp_needed = 1;
+ }
+
+ ha->isp_ops->mpi_fw_dump(vha, 1);
+
+ if (reset_isp_needed) {
+ vha->hw->flags.fw_init_done = 0;
+ set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
+ qla2xxx_wake_dpc(vha);
+ }
+}
+
/**
* qla2x00_async_event() - Process aynchronous events.
* @vha: SCSI driver HA context
@@ -871,9 +904,9 @@ qla2x00_async_event(scsi_qla_host_t *vha
"ISP System Error - mbx1=%xh mbx2=%xh mbx3=%xh.\n ",
mb[1], mb[2], mb[3]);
- ha->fw_dump_mpi =
- (IS_QLA27XX(ha) || IS_QLA28XX(ha)) &&
- RD_REG_WORD(®24->mailbox7) & BIT_8;
+ if ((IS_QLA27XX(ha) || IS_QLA28XX(ha)) &&
+ RD_REG_WORD(®24->mailbox7) & BIT_8)
+ ha->isp_ops->mpi_fw_dump(vha, 1);
ha->isp_ops->fw_dump(vha, 1);
ha->flags.fw_init_done = 0;
QLA_FW_STOPPED(ha);
@@ -1374,20 +1407,7 @@ qla2x00_async_event(scsi_qla_host_t *vha
case MBA_IDC_AEN:
if (IS_QLA27XX(ha) || IS_QLA28XX(ha)) {
- ha->flags.fw_init_done = 0;
- ql_log(ql_log_warn, vha, 0xffff,
- "MPI Heartbeat stop. Chip reset needed. MB0[%xh] MB1[%xh] MB2[%xh] MB3[%xh]\n",
- mb[0], mb[1], mb[2], mb[3]);
-
- if ((mb[1] & BIT_8) ||
- (mb[2] & BIT_8)) {
- ql_log(ql_log_warn, vha, 0xd013,
- "MPI Heartbeat stop. FW dump needed\n");
- ha->fw_dump_mpi = 1;
- ha->isp_ops->fw_dump(vha, 1);
- }
- set_bit(ISP_ABORT_NEEDED, &vha->dpc_flags);
- qla2xxx_wake_dpc(vha);
+ qla27xx_handle_8200_aen(vha, mb);
} else if (IS_QLA83XX(ha)) {
mb[4] = RD_REG_WORD(®24->mailbox4);
mb[5] = RD_REG_WORD(®24->mailbox5);
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -35,6 +35,11 @@ static int apidev_major;
*/
struct kmem_cache *srb_cachep;
+int ql2xfulldump_on_mpifail;
+module_param(ql2xfulldump_on_mpifail, int, S_IRUGO | S_IWUSR);
+MODULE_PARM_DESC(ql2xfulldump_on_mpifail,
+ "Set this to take full dump on MPI hang.");
+
/*
* CT6 CTX allocation cache
*/
@@ -2524,6 +2529,7 @@ static struct isp_operations qla27xx_isp
.read_nvram = NULL,
.write_nvram = NULL,
.fw_dump = qla27xx_fwdump,
+ .mpi_fw_dump = qla27xx_mpi_fwdump,
.beacon_on = qla24xx_beacon_on,
.beacon_off = qla24xx_beacon_off,
.beacon_blink = qla83xx_beacon_blink,
--- a/drivers/scsi/qla2xxx/qla_tmpl.c
+++ b/drivers/scsi/qla2xxx/qla_tmpl.c
@@ -12,6 +12,33 @@
#define IOBASE(vha) IOBAR(ISPREG(vha))
#define INVALID_ENTRY ((struct qla27xx_fwdt_entry *)0xffffffffffffffffUL)
+/* hardware_lock assumed held. */
+static void
+qla27xx_write_remote_reg(struct scsi_qla_host *vha,
+ u32 addr, u32 data)
+{
+ char *reg = (char *)ISPREG(vha);
+
+ ql_dbg(ql_dbg_misc, vha, 0xd300,
+ "%s: addr/data = %xh/%xh\n", __func__, addr, data);
+
+ WRT_REG_DWORD(reg + IOBASE(vha), 0x40);
+ WRT_REG_DWORD(reg + 0xc4, data);
+ WRT_REG_DWORD(reg + 0xc0, addr);
+}
+
+void
+qla27xx_reset_mpi(scsi_qla_host_t *vha)
+{
+ ql_dbg(ql_dbg_misc + ql_dbg_verbose, vha, 0xd301,
+ "Entered %s.\n", __func__);
+
+ qla27xx_write_remote_reg(vha, 0x104050, 0x40004);
+ qla27xx_write_remote_reg(vha, 0x10405c, 0x4);
+
+ vha->hw->stat.num_mpi_reset++;
+}
+
static inline void
qla27xx_insert16(uint16_t value, void *buf, ulong *len)
{
@@ -998,6 +1025,62 @@ qla27xx_fwdt_template_valid(void *p)
}
void
+qla27xx_mpi_fwdump(scsi_qla_host_t *vha, int hardware_locked)
+{
+ ulong flags = 0;
+ bool need_mpi_reset = 1;
+
+#ifndef __CHECKER__
+ if (!hardware_locked)
+ spin_lock_irqsave(&vha->hw->hardware_lock, flags);
+#endif
+ if (!vha->hw->mpi_fw_dump) {
+ ql_log(ql_log_warn, vha, 0x02f3, "-> mpi_fwdump no buffer\n");
+ } else if (vha->hw->mpi_fw_dumped) {
+ ql_log(ql_log_warn, vha, 0x02f4,
+ "-> MPI firmware already dumped (%p) -- ignoring request\n",
+ vha->hw->mpi_fw_dump);
+ } else {
+ struct fwdt *fwdt = &vha->hw->fwdt[1];
+ ulong len;
+ void *buf = vha->hw->mpi_fw_dump;
+
+ ql_log(ql_log_warn, vha, 0x02f5, "-> fwdt1 running...\n");
+ if (!fwdt->template) {
+ ql_log(ql_log_warn, vha, 0x02f6,
+ "-> fwdt1 no template\n");
+ goto bailout;
+ }
+ len = qla27xx_execute_fwdt_template(vha, fwdt->template, buf);
+ if (len == 0) {
+ goto bailout;
+ } else if (len != fwdt->dump_size) {
+ ql_log(ql_log_warn, vha, 0x02f7,
+ "-> fwdt1 fwdump residual=%+ld\n",
+ fwdt->dump_size - len);
+ } else {
+ need_mpi_reset = 0;
+ }
+
+ vha->hw->mpi_fw_dump_len = len;
+ vha->hw->mpi_fw_dumped = 1;
+
+ ql_log(ql_log_warn, vha, 0x02f8,
+ "-> MPI firmware dump saved to buffer (%lu/%p)\n",
+ vha->host_no, vha->hw->mpi_fw_dump);
+ qla2x00_post_uevent_work(vha, QLA_UEVENT_CODE_FW_DUMP);
+ }
+
+bailout:
+ if (need_mpi_reset)
+ qla27xx_reset_mpi(vha);
+#ifndef __CHECKER__
+ if (!hardware_locked)
+ spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);
+#endif
+}
+
+void
qla27xx_fwdump(scsi_qla_host_t *vha, int hardware_locked)
{
ulong flags = 0;
@@ -1015,30 +1098,25 @@ qla27xx_fwdump(scsi_qla_host_t *vha, int
vha->hw->fw_dump);
} else {
struct fwdt *fwdt = vha->hw->fwdt;
- uint j;
ulong len;
void *buf = vha->hw->fw_dump;
- uint count = vha->hw->fw_dump_mpi ? 2 : 1;
- for (j = 0; j < count; j++, fwdt++, buf += len) {
- ql_log(ql_log_warn, vha, 0xd011,
- "-> fwdt%u running...\n", j);
- if (!fwdt->template) {
- ql_log(ql_log_warn, vha, 0xd012,
- "-> fwdt%u no template\n", j);
- break;
- }
- len = qla27xx_execute_fwdt_template(vha,
- fwdt->template, buf);
- if (len == 0) {
- goto bailout;
- } else if (len != fwdt->dump_size) {
- ql_log(ql_log_warn, vha, 0xd013,
- "-> fwdt%u fwdump residual=%+ld\n",
- j, fwdt->dump_size - len);
- }
+ ql_log(ql_log_warn, vha, 0xd011, "-> fwdt0 running...\n");
+ if (!fwdt->template) {
+ ql_log(ql_log_warn, vha, 0xd012,
+ "-> fwdt0 no template\n");
+ goto bailout;
}
- vha->hw->fw_dump_len = buf - (void *)vha->hw->fw_dump;
+ len = qla27xx_execute_fwdt_template(vha, fwdt->template, buf);
+ if (len == 0) {
+ goto bailout;
+ } else if (len != fwdt->dump_size) {
+ ql_log(ql_log_warn, vha, 0xd013,
+ "-> fwdt0 fwdump residual=%+ld\n",
+ fwdt->dump_size - len);
+ }
+
+ vha->hw->fw_dump_len = len;
vha->hw->fw_dumped = 1;
ql_log(ql_log_warn, vha, 0xd015,
@@ -1048,7 +1126,6 @@ qla27xx_fwdump(scsi_qla_host_t *vha, int
}
bailout:
- vha->hw->fw_dump_mpi = 0;
#ifndef __CHECKER__
if (!hardware_locked)
spin_unlock_irqrestore(&vha->hw->hardware_lock, flags);