scsi: ufs: dump debug info during failures
Inserts driver dumps for UFS Host Controller registers, Transfer Requests and Task Management Requests. The dumps will occur on driver initialization failure, ufshcd_abort() and on error handling path. Signed-off-by: Dolev Raviv <draviv@codeaurora.org> Signed-off-by: Subhash Jadavani <subhashj@codeaurora.org> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Dolev Raviv
Martin K. Petersen
parent
364757e468
commit
66cc820f9c
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@ -94,6 +94,9 @@
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_ret; \
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})
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#define ufshcd_hex_dump(prefix_str, buf, len) \
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print_hex_dump(KERN_ERR, prefix_str, DUMP_PREFIX_OFFSET, 16, 4, buf, len, false)
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static u32 ufs_query_desc_max_size[] = {
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QUERY_DESC_DEVICE_MAX_SIZE,
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QUERY_DESC_CONFIGURAION_MAX_SIZE,
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@ -267,6 +270,77 @@ static inline void ufshcd_remove_non_printable(char *val)
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*val = ' ';
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}
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static void ufshcd_print_host_regs(struct ufs_hba *hba)
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{
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/*
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* hex_dump reads its data without the readl macro. This might
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* cause inconsistency issues on some platform, as the printed
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* values may be from cache and not the most recent value.
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* To know whether you are looking at an un-cached version verify
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* that IORESOURCE_MEM flag is on when xxx_get_resource() is invoked
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* during platform/pci probe function.
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*/
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ufshcd_hex_dump("host regs: ", hba->mmio_base, UFSHCI_REG_SPACE_SIZE);
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dev_err(hba->dev, "hba->ufs_version = 0x%x, hba->capabilities = 0x%x\n",
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hba->ufs_version, hba->capabilities);
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dev_err(hba->dev,
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"hba->outstanding_reqs = 0x%x, hba->outstanding_tasks = 0x%x\n",
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(u32)hba->outstanding_reqs, (u32)hba->outstanding_tasks);
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}
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static
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void ufshcd_print_trs(struct ufs_hba *hba, unsigned long bitmap, bool pr_prdt)
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{
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struct ufshcd_lrb *lrbp;
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int tag;
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for_each_set_bit(tag, &bitmap, hba->nutrs) {
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lrbp = &hba->lrb[tag];
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dev_err(hba->dev, "UPIU[%d] - Transfer Request Descriptor\n",
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tag);
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ufshcd_hex_dump("UPIU TRD: ", lrbp->utr_descriptor_ptr,
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sizeof(struct utp_transfer_req_desc));
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dev_err(hba->dev, "UPIU[%d] - Request UPIU\n", tag);
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ufshcd_hex_dump("UPIU REQ: ", lrbp->ucd_req_ptr,
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sizeof(struct utp_upiu_req));
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dev_err(hba->dev, "UPIU[%d] - Response UPIU\n", tag);
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ufshcd_hex_dump("UPIU RSP: ", lrbp->ucd_rsp_ptr,
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sizeof(struct utp_upiu_rsp));
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if (pr_prdt) {
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int prdt_length = le16_to_cpu(
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lrbp->utr_descriptor_ptr->prd_table_length);
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dev_err(hba->dev, "UPIU[%d] - PRDT - %d entries\n", tag,
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prdt_length);
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ufshcd_hex_dump("UPIU PRDT: ", lrbp->ucd_prdt_ptr,
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sizeof(struct ufshcd_sg_entry) *
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prdt_length);
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}
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}
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}
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static void ufshcd_print_tmrs(struct ufs_hba *hba, unsigned long bitmap)
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{
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struct utp_task_req_desc *tmrdp;
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int tag;
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for_each_set_bit(tag, &bitmap, hba->nutmrs) {
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tmrdp = &hba->utmrdl_base_addr[tag];
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dev_err(hba->dev, "TM[%d] - Task Management Header\n", tag);
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ufshcd_hex_dump("TM TRD: ", &tmrdp->header,
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sizeof(struct request_desc_header));
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dev_err(hba->dev, "TM[%d] - Task Management Request UPIU\n",
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tag);
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ufshcd_hex_dump("TM REQ: ", tmrdp->task_req_upiu,
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sizeof(struct utp_upiu_req));
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dev_err(hba->dev, "TM[%d] - Task Management Response UPIU\n",
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tag);
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ufshcd_hex_dump("TM RSP: ", tmrdp->task_rsp_upiu,
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sizeof(struct utp_task_req_desc));
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}
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}
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/*
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* ufshcd_wait_for_register - wait for register value to change
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* @hba - per-adapter interface
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@ -2391,6 +2465,32 @@ out:
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return -ENOMEM;
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}
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/**
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* ufshcd_print_pwr_info - print power params as saved in hba
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* power info
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* @hba: per-adapter instance
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*/
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static void ufshcd_print_pwr_info(struct ufs_hba *hba)
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{
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static const char * const names[] = {
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"INVALID MODE",
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"FAST MODE",
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"SLOW_MODE",
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"INVALID MODE",
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"FASTAUTO_MODE",
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"SLOWAUTO_MODE",
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"INVALID MODE",
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};
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dev_info(hba->dev, "%s:[RX, TX]: gear=[%d, %d], lane[%d, %d], pwr[%s, %s], rate = %d\n",
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__func__,
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hba->pwr_info.gear_rx, hba->pwr_info.gear_tx,
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hba->pwr_info.lane_rx, hba->pwr_info.lane_tx,
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names[hba->pwr_info.pwr_rx],
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names[hba->pwr_info.pwr_tx],
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hba->pwr_info.hs_rate);
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}
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/**
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* ufshcd_host_memory_configure - configure local reference block with
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* memory offsets
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@ -2973,6 +3073,8 @@ static int ufshcd_change_power_mode(struct ufs_hba *hba,
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sizeof(struct ufs_pa_layer_attr));
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}
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ufshcd_print_pwr_info(hba);
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return ret;
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}
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@ -3656,6 +3758,8 @@ ufshcd_transfer_rsp_status(struct ufs_hba *hba, struct ufshcd_lrb *lrbp)
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break;
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} /* end of switch */
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if (host_byte(result) != DID_OK)
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ufshcd_print_trs(hba, 1 << lrbp->task_tag, true);
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return result;
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}
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@ -4327,6 +4431,22 @@ static void ufshcd_check_errors(struct ufs_hba *hba)
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scsi_block_requests(hba->host);
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hba->ufshcd_state = UFSHCD_STATE_EH_SCHEDULED;
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/* dump controller state before resetting */
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if (hba->saved_err & (INT_FATAL_ERRORS | UIC_ERROR)) {
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bool pr_prdt = !!(hba->saved_err &
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SYSTEM_BUS_FATAL_ERROR);
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dev_err(hba->dev, "%s: saved_err 0x%x saved_uic_err 0x%x\n",
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__func__, hba->saved_err,
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hba->saved_uic_err);
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ufshcd_print_host_regs(hba);
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ufshcd_print_pwr_info(hba);
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ufshcd_print_tmrs(hba, hba->outstanding_tasks);
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ufshcd_print_trs(hba, hba->outstanding_reqs,
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pr_prdt);
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}
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schedule_work(&hba->eh_work);
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}
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}
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@ -4617,6 +4737,13 @@ static int ufshcd_abort(struct scsi_cmnd *cmd)
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__func__, tag);
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}
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/* Print Transfer Request of aborted task */
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dev_err(hba->dev, "%s: Device abort task at tag %d\n", __func__, tag);
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scsi_print_command(hba->lrb[tag].cmd);
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ufshcd_print_host_regs(hba);
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ufshcd_print_pwr_info(hba);
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ufshcd_print_trs(hba, 1 << tag, true);
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lrbp = &hba->lrb[tag];
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for (poll_cnt = 100; poll_cnt; poll_cnt--) {
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err = ufshcd_issue_tm_cmd(hba, lrbp->lun, lrbp->task_tag,
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@ -5256,6 +5383,7 @@ static int ufshcd_probe_hba(struct ufs_hba *hba)
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goto out;
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ufshcd_init_pwr_info(hba);
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ufshcd_print_pwr_info(hba);
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/* set the default level for urgent bkops */
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hba->urgent_bkops_lvl = BKOPS_STATUS_PERF_IMPACT;
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@ -6795,6 +6923,7 @@ int ufshcd_init(struct ufs_hba *hba, void __iomem *mmio_base, unsigned int irq)
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err = ufshcd_hba_enable(hba);
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if (err) {
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dev_err(hba->dev, "Host controller enable failed\n");
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ufshcd_print_host_regs(hba);
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goto out_remove_scsi_host;
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}
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@ -72,6 +72,9 @@ enum {
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REG_UIC_COMMAND_ARG_1 = 0x94,
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REG_UIC_COMMAND_ARG_2 = 0x98,
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REG_UIC_COMMAND_ARG_3 = 0x9C,
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UFSHCI_REG_SPACE_SIZE = 0xA0,
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REG_UFS_CCAP = 0x100,
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REG_UFS_CRYPTOCAP = 0x104,
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