scsi: ufs-mediatek: Introduce event_notify implementation
authorStanley Chu <stanley.chu@mediatek.com>
Sat, 5 Dec 2020 11:59:01 +0000 (19:59 +0800)
committerMartin K. Petersen <martin.petersen@oracle.com>
Mon, 7 Dec 2020 22:51:49 +0000 (17:51 -0500)
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: Avri Altman <avri.altman@wdc.com>
Signed-off-by: Stanley Chu <stanley.chu@mediatek.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
drivers/scsi/ufs/ufs-mediatek-trace.h [new file with mode: 0644]
drivers/scsi/ufs/ufs-mediatek.c

diff --git a/drivers/scsi/ufs/ufs-mediatek-trace.h b/drivers/scsi/ufs/ufs-mediatek-trace.h
new file mode 100644 (file)
index 0000000..fd6f84c
--- /dev/null
@@ -0,0 +1,36 @@
+/* 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>
index 1d3c5cd..3522458 100644 (file)
@@ -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,
 };
 
 /**