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authorQuinn Tran <qutran@marvell.com>2022-01-10 08:02:06 +0300
committerMartin K. Petersen <martin.petersen@oracle.com>2022-01-25 07:57:30 +0300
commite35920ab7874d5e2faeb4f958a74bfa793f1ce5a (patch)
tree6562e779c501e121c2807790cd00c2c26306061a /drivers/scsi/qla2xxx
parent64f24af75b79cba3b86b0760e27e0fa904db570f (diff)
downloadlinux-e35920ab7874d5e2faeb4f958a74bfa793f1ce5a.tar.xz
scsi: qla2xxx: Fix premature hw access after PCI error
After a recoverable PCI error has been detected and recovered, qla driver needs to check to see if the error condition still persist and/or wait for the OS to give the resume signal. Sep 8 22:26:03 localhost kernel: WARNING: CPU: 9 PID: 124606 at qla_tmpl.c:440 qla27xx_fwdt_entry_t266+0x55/0x60 [qla2xxx] Sep 8 22:26:03 localhost kernel: RIP: 0010:qla27xx_fwdt_entry_t266+0x55/0x60 [qla2xxx] Sep 8 22:26:03 localhost kernel: Call Trace: Sep 8 22:26:03 localhost kernel: ? qla27xx_walk_template+0xb1/0x1b0 [qla2xxx] Sep 8 22:26:03 localhost kernel: ? qla27xx_execute_fwdt_template+0x12a/0x160 [qla2xxx] Sep 8 22:26:03 localhost kernel: ? qla27xx_fwdump+0xa0/0x1c0 [qla2xxx] Sep 8 22:26:03 localhost kernel: ? qla2xxx_pci_mmio_enabled+0xfb/0x120 [qla2xxx] Sep 8 22:26:03 localhost kernel: ? report_mmio_enabled+0x44/0x80 Sep 8 22:26:03 localhost kernel: ? report_slot_reset+0x80/0x80 Sep 8 22:26:03 localhost kernel: ? pci_walk_bus+0x70/0x90 Sep 8 22:26:03 localhost kernel: ? aer_dev_correctable_show+0xc0/0xc0 Sep 8 22:26:03 localhost kernel: ? pcie_do_recovery+0x1bb/0x240 Sep 8 22:26:03 localhost kernel: ? aer_recover_work_func+0xaa/0xd0 Sep 8 22:26:03 localhost kernel: ? process_one_work+0x1a7/0x360 .. Sep 8 22:26:03 localhost kernel: qla2xxx [0000:42:00.2]-8041:22: detected PCI disconnect. Sep 8 22:26:03 localhost kernel: qla2xxx [0000:42:00.2]-107ff:22: qla27xx_fwdt_entry_t262: dump ram MB failed. Area 5h start 198013h end 198013h Sep 8 22:26:03 localhost kernel: qla2xxx [0000:42:00.2]-107ff:22: Unable to capture FW dump Sep 8 22:26:03 localhost kernel: qla2xxx [0000:42:00.2]-1015:22: cmd=0x0, waited 5221 msecs Sep 8 22:26:03 localhost kernel: qla2xxx [0000:42:00.2]-680d:22: mmio enabled returning. Sep 8 22:26:03 localhost kernel: qla2xxx [0000:42:00.2]-d04c:22: MBX Command timeout for cmd 0, iocontrol=ffffffff jiffies=10140f2e5 mb[0-3]=[0xffff 0xffff 0xffff 0xffff] Link: https://lore.kernel.org/r/20220110050218.3958-6-njavali@marvell.com Cc: stable@vger.kernel.org Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com> Signed-off-by: Quinn Tran <qutran@marvell.com> Signed-off-by: Nilesh Javali <njavali@marvell.com> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/qla2xxx')
-rw-r--r--drivers/scsi/qla2xxx/qla_os.c10
-rw-r--r--drivers/scsi/qla2xxx/qla_tmpl.c9
2 files changed, 16 insertions, 3 deletions
diff --git a/drivers/scsi/qla2xxx/qla_os.c b/drivers/scsi/qla2xxx/qla_os.c
index 0a7b00d165c7..c4b4b4496399 100644
--- a/drivers/scsi/qla2xxx/qla_os.c
+++ b/drivers/scsi/qla2xxx/qla_os.c
@@ -7639,7 +7639,7 @@ qla2xxx_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state)
switch (state) {
case pci_channel_io_normal:
- ha->flags.eeh_busy = 0;
+ qla_pci_set_eeh_busy(vha);
if (ql2xmqsupport || ql2xnvmeenable) {
set_bit(QPAIR_ONLINE_CHECK_NEEDED, &vha->dpc_flags);
qla2xxx_wake_dpc(vha);
@@ -7680,9 +7680,16 @@ qla2xxx_pci_mmio_enabled(struct pci_dev *pdev)
"mmio enabled\n");
ha->pci_error_state = QLA_PCI_MMIO_ENABLED;
+
if (IS_QLA82XX(ha))
return PCI_ERS_RESULT_RECOVERED;
+ if (qla2x00_isp_reg_stat(ha)) {
+ ql_log(ql_log_info, base_vha, 0x803f,
+ "During mmio enabled, PCI/Register disconnect still detected.\n");
+ goto out;
+ }
+
spin_lock_irqsave(&ha->hardware_lock, flags);
if (IS_QLA2100(ha) || IS_QLA2200(ha)){
stat = rd_reg_word(&reg->hccr);
@@ -7704,6 +7711,7 @@ qla2xxx_pci_mmio_enabled(struct pci_dev *pdev)
"RISC paused -- mmio_enabled, Dumping firmware.\n");
qla2xxx_dump_fw(base_vha);
}
+out:
/* set PCI_ERS_RESULT_NEED_RESET to trigger call to qla2xxx_pci_slot_reset */
ql_dbg(ql_dbg_aer, base_vha, 0x600d,
"mmio enabled returning.\n");
diff --git a/drivers/scsi/qla2xxx/qla_tmpl.c b/drivers/scsi/qla2xxx/qla_tmpl.c
index 26c13a953b97..b0a74b036cf4 100644
--- a/drivers/scsi/qla2xxx/qla_tmpl.c
+++ b/drivers/scsi/qla2xxx/qla_tmpl.c
@@ -435,8 +435,13 @@ qla27xx_fwdt_entry_t266(struct scsi_qla_host *vha,
{
ql_dbg(ql_dbg_misc, vha, 0xd20a,
"%s: reset risc [%lx]\n", __func__, *len);
- if (buf)
- WARN_ON_ONCE(qla24xx_soft_reset(vha->hw) != QLA_SUCCESS);
+ if (buf) {
+ if (qla24xx_soft_reset(vha->hw) != QLA_SUCCESS) {
+ ql_dbg(ql_dbg_async, vha, 0x5001,
+ "%s: unable to soft reset\n", __func__);
+ return INVALID_ENTRY;
+ }
+ }
return qla27xx_next_entry(ent);
}