Commit ca1bb061 authored by Stanley Chu's avatar Stanley Chu Committed by Martin K. Petersen
Browse files

scsi: ufs-mediatek: Introduce event_notify implementation 

Introduce event_notify implementation on MediaTek UFS platform. A
vendor-specific tracepoint is added that can be used for debugging
purposes.

Link: https://lore.kernel.org/r/20201205115901.26815-5-stanley.chu@mediatek.com


Reviewed-by: default avatarAvri Altman <avri.altman@wdc.com>
Signed-off-by: default avatarStanley Chu <stanley.chu@mediatek.com>
Signed-off-by: default avatarMartin K. Petersen <martin.petersen@oracle.com>
parent 172614a9

drivers/scsi/ufs/ufs-mediatek-trace.h

0 → 100644
+36 −0
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0 */

/*

 * Copyright (C) 2020 MediaTek Inc.

 */

#undef TRACE_SYSTEM

#define TRACE_SYSTEM ufs_mtk



#if !defined(_TRACE_EVENT_UFS_MEDIATEK_H) || defined(TRACE_HEADER_MULTI_READ)

#define _TRACE_EVENT_UFS_MEDIATEK_H



#include <linux/tracepoint.h>



TRACE_EVENT(ufs_mtk_event,

	TP_PROTO(unsigned int type, unsigned int data),

	TP_ARGS(type, data),



	TP_STRUCT__entry(

		__field(unsigned int, type)

		__field(unsigned int, data)

	),



	TP_fast_assign(

		__entry->type = type;

		__entry->data = data;

	),



	TP_printk("ufs:event=%u data=%u",

		  __entry->type, __entry->data)

	);

#endif



#undef TRACE_INCLUDE_PATH

#undef TRACE_INCLUDE_FILE

#define TRACE_INCLUDE_PATH .

#define TRACE_INCLUDE_FILE ufs-mediatek-trace

#include <trace/define_trace.h>

drivers/scsi/ufs/ufs-mediatek.c

+12 −0
Original line number Diff line number Diff line
@@ -24,6 +24,9 @@ 
#include "unipro.h"

#include "ufs-mediatek.h"



#define CREATE_TRACE_POINTS

#include "ufs-mediatek-trace.h"



#define ufs_mtk_smc(cmd, val, res) \

	arm_smccc_smc(MTK_SIP_UFS_CONTROL, \

		      cmd, val, 0, 0, 0, 0, 0, &(res))
@@ -1002,6 +1005,14 @@ static void ufs_mtk_fixup_dev_quirks(struct ufs_hba *hba) 
	ufshcd_fixup_dev_quirks(hba, ufs_mtk_dev_fixups);

}



static void ufs_mtk_event_notify(struct ufs_hba *hba,

				 enum ufs_event_type evt, void *data)

{

	unsigned int val = *(u32 *)data;



	trace_ufs_mtk_event(evt, val);

}



/*

 * struct ufs_hba_mtk_vops - UFS MTK specific variant operations

 *
@@ -1021,6 +1032,7 @@ static const struct ufs_hba_variant_ops ufs_hba_mtk_vops = { 
	.resume              = ufs_mtk_resume,

	.dbg_register_dump   = ufs_mtk_dbg_register_dump,

	.device_reset        = ufs_mtk_device_reset,

	.event_notify        = ufs_mtk_event_notify,

};



/**