From: yangxingui yangxingui@huawei.com

driver inclusion category: bugfix bugzilla: NA CVE: NA

--------------------------- The sense data of the sas disk is used by the kernel and upper layers to perform some policies on disks when the I/O is abnormally completed.

Such as the logs as follow, if the driver transmit sense data to the upper layer, the disk may be repaired by remap policy of disk management system.

[Wed Sep 15 13:03:04 2021] hisi_sas_v3_hw 0000:74:02.0: erroneous completion iptt=3342 task= pK-error dev id=0 sas_addr=0x5541310520e0b000 CQ hdr: 0x1503 0xd0e 0x0 0x20000 Error info: 0x1200 0x0 0x0 0x40 [Wed Sep 15 13:03:04 2021] hisi_sas_v3_hw 0000:74:02.0: data underflow, rsp_code:0x72, sensekey:0x3, ASC:0x11, ASCQ:0x0.

Signed-off-by: yangxingui yangxingui@huawei.com Reviewed-by: ouyangdelong < ouyangdelong@huawei.com> Signed-off-by: Yang Yingliang yangyingliang@huawei.com --- drivers/scsi/hisi_sas/hisi_sas.h | 2 ++ drivers/scsi/hisi_sas/hisi_sas_main.c | 17 +++++++++++++++++ drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 1 + 3 files changed, 20 insertions(+)

diff --git a/drivers/scsi/hisi_sas/hisi_sas.h b/drivers/scsi/hisi_sas/hisi_sas.h index eae0e533ce7fc..193fc960d87fd 100644 --- a/drivers/scsi/hisi_sas/hisi_sas.h +++ b/drivers/scsi/hisi_sas/hisi_sas.h @@ -571,6 +571,8 @@ extern void hisi_sas_free(struct hisi_hba *hisi_hba); extern u8 hisi_sas_get_ata_protocol(struct host_to_dev_fis *fis, int direction); extern struct hisi_sas_port *to_hisi_sas_port(struct asd_sas_port *sas_port); +extern void hisi_sas_set_sense_data(struct sas_task *task, + struct hisi_sas_slot *slot); extern void hisi_sas_sata_done(struct sas_task *task, struct hisi_sas_slot *slot); extern int hisi_sas_get_fw_info(struct hisi_hba *hisi_hba); diff --git a/drivers/scsi/hisi_sas/hisi_sas_main.c b/drivers/scsi/hisi_sas/hisi_sas_main.c index f944371ac3133..51555cfc40578 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_main.c +++ b/drivers/scsi/hisi_sas/hisi_sas_main.c @@ -105,6 +105,23 @@ u8 hisi_sas_get_ata_protocol(struct host_to_dev_fis *fis, int direction) } EXPORT_SYMBOL_GPL(hisi_sas_get_ata_protocol);

+void hisi_sas_set_sense_data(struct sas_task *task, + struct hisi_sas_slot *slot) +{ + struct ssp_response_iu *iu = + hisi_sas_status_buf_addr_mem(slot) + + sizeof(struct hisi_sas_err_record); + if (iu->datapres == 2) { + struct task_status_struct *ts = &task->task_status; + + ts->buf_valid_size = + min_t(int, SAS_STATUS_BUF_SIZE, + be32_to_cpu(iu->sense_data_len)); + memcpy(ts->buf, iu->sense_data, ts->buf_valid_size); + } +} +EXPORT_SYMBOL_GPL(hisi_sas_set_sense_data); + void hisi_sas_sata_done(struct sas_task *task, struct hisi_sas_slot *slot) { diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c index a9f53dbb91679..06b4f2db62f7b 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c +++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c @@ -2234,6 +2234,7 @@ slot_err_v3_hw(struct hisi_hba *hisi_hba, struct sas_task *task, ts->stat = SAS_OPEN_REJECT; ts->open_rej_reason = SAS_OREJ_RSVD_RETRY; } + hisi_sas_set_sense_data(task, slot); break; case SAS_PROTOCOL_SATA: case SAS_PROTOCOL_STP: