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drm/panfrost: Add support for devcoredump

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In the event of a job timeout, debug dump information will be written into
/sys/class/devcoredump.

Inspired by etnaviv's similar feature.

Signed-off-by: Adrián Larumbe <adrian.larumbe@collabora.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220729144610.2105223-3-adrian.larumbe@collabora.com
This commit is contained in:
Adrián Larumbe
2022-07-29 15:46:10 +01:00
committed by Steven Price
parent 6a3aaa2bc0
commit 730c2bf4ad
6 changed files with 314 additions and 1 deletions
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47
include/uapi/drm/panfrost_drm.h
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@@ -224,6 +224,53 @@ struct drm_panfrost_madvise {
__u32 retained; /* out, whether backing store still exists */
};
/* Definitions for coredump decoding in user space */
#define PANFROSTDUMP_MAJOR 1
#define PANFROSTDUMP_MINOR 0
#define PANFROSTDUMP_MAGIC 0x464E4150 /* PANF */
#define PANFROSTDUMP_BUF_REG 0
#define PANFROSTDUMP_BUF_BOMAP (PANFROSTDUMP_BUF_REG + 1)
#define PANFROSTDUMP_BUF_BO (PANFROSTDUMP_BUF_BOMAP + 1)
#define PANFROSTDUMP_BUF_TRAILER (PANFROSTDUMP_BUF_BO + 1)
struct panfrost_dump_object_header {
__le32 magic;
__le32 type;
__le32 file_size;
__le32 file_offset;
union {
struct pan_reg_hdr {
__le64 jc;
__le32 gpu_id;
__le32 major;
__le32 minor;
__le64 nbos;
} reghdr;
struct pan_bomap_hdr {
__le32 valid;
__le64 iova;
__le32 data[2];
} bomap;
/*
* Force same size in case we want to expand the header
* with new fields and also keep it 512-byte aligned
*/
__le32 sizer[496];
};
};
/* Registers object, an array of these */
struct panfrost_dump_registers {
__le32 reg;
__le32 value;
};
#if defined(__cplusplus)
}
#endif