Commit 6ba65588 authored by Gilad Broner's avatar Gilad Broner Committed by Martin K. Petersen
Browse files

scsi: ufs: add host state prints in failure cases 



Whenever some UFS failure occurs the driver prints the UFS
registers in order to help with analysis of the failure.
However this may not be sufficient in some cases, so having
the host controller state as it is represented and managed in
the driver will contribute to analysis efforts.
Added prints of various fields in the hba struct which may be
of interest.

Signed-off-by: default avatarGilad Broner <gbroner@codeaurora.org>
Signed-off-by: default avatarSubhash Jadavani <subhashj@codeaurora.org>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent a3cd5ec5

drivers/scsi/ufs/ufshcd.c

+25 −0
Original line number Diff line number Diff line
@@ -453,6 +453,28 @@ static void ufshcd_print_tmrs(struct ufs_hba *hba, unsigned long bitmap) 
	}

}



static void ufshcd_print_host_state(struct ufs_hba *hba)

{

	dev_err(hba->dev, "UFS Host state=%d\n", hba->ufshcd_state);

	dev_err(hba->dev, "lrb in use=0x%lx, outstanding reqs=0x%lx tasks=0x%lx\n",

		hba->lrb_in_use, hba->outstanding_tasks, hba->outstanding_reqs);

	dev_err(hba->dev, "saved_err=0x%x, saved_uic_err=0x%x\n",

		hba->saved_err, hba->saved_uic_err);

	dev_err(hba->dev, "Device power mode=%d, UIC link state=%d\n",

		hba->curr_dev_pwr_mode, hba->uic_link_state);

	dev_err(hba->dev, "PM in progress=%d, sys. suspended=%d\n",

		hba->pm_op_in_progress, hba->is_sys_suspended);

	dev_err(hba->dev, "Auto BKOPS=%d, Host self-block=%d\n",

		hba->auto_bkops_enabled, hba->host->host_self_blocked);

	dev_err(hba->dev, "Clk gate=%d\n", hba->clk_gating.state);

	dev_err(hba->dev, "error handling flags=0x%x, req. abort count=%d\n",

		hba->eh_flags, hba->req_abort_count);

	dev_err(hba->dev, "Host capabilities=0x%x, caps=0x%x\n",

		hba->capabilities, hba->caps);

	dev_err(hba->dev, "quirks=0x%x, dev. quirks=0x%x\n", hba->quirks,

		hba->dev_quirks);

}



/**

 * ufshcd_print_pwr_info - print power params as saved in hba

 * power info
@@ -4426,6 +4448,7 @@ ufshcd_transfer_rsp_status(struct ufs_hba *hba, struct ufshcd_lrb *lrbp) 
				"OCS error from controller = %x for tag %d\n",

				ocs, lrbp->task_tag);

		ufshcd_print_host_regs(hba);

		ufshcd_print_host_state(hba);

		break;

	} /* end of switch */
@@ -5477,6 +5500,7 @@ static int ufshcd_abort(struct scsi_cmnd *cmd) 
	scsi_print_command(hba->lrb[tag].cmd);

	if (!hba->req_abort_count) {

		ufshcd_print_host_regs(hba);

		ufshcd_print_host_state(hba);

		ufshcd_print_pwr_info(hba);

		ufshcd_print_trs(hba, 1 << tag, true);

	} else {
@@ -7738,6 +7762,7 @@ int ufshcd_init(struct ufs_hba *hba, void __iomem *mmio_base, unsigned int irq) 
	if (err) {

		dev_err(hba->dev, "Host controller enable failed\n");

		ufshcd_print_host_regs(hba);

		ufshcd_print_host_state(hba);

		goto out_remove_scsi_host;

	}

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