Commit 09fb6bcc authored by Zhanjun Dong's avatar Zhanjun Dong Committed by Ashutosh Dixit
Browse files

drm/xe/guc: Only add GuC crash dump if available 



Add GuC crash dump data empty check. LFD will only include crash dump
section when data is not empty.

Signed-off-by: default avatarZhanjun Dong <zhanjun.dong@intel.com>
Reviewed-by: default avatarJulia Filipchuk <julia.filipchuk@intel.com>
Signed-off-by: default avatarAshutosh Dixit <ashutosh.dixit@intel.com>
Link: https://patch.msgid.link/20251127170759.2620994-6-zhanjun.dong@intel.com
parent fc40e8f6

drivers/gpu/drm/xe/xe_guc_log.c

+45 −0
Original line number Diff line number Diff line
@@ -498,6 +498,50 @@ xe_guc_log_add_log_event(struct drm_printer *p, struct xe_guc_log_snapshot *snap 
	return size;

}



static int

xe_guc_log_add_crash_dump(struct drm_printer *p, struct xe_guc_log_snapshot *snapshot,

			  struct guc_lic_save *config)

{

	struct guc_log_buffer_entry_list *entry;

	int chunk_from, chunk_id;

	int from, to, i;

	size_t size = 0;

	u32 *buf32;



	entry = &config->entry[GUC_LOG_TYPE_CRASH_DUMP];



	/* Skip zero sized crash dump */

	if (!entry->buf_size)

		return 0;



	/* Check if crash dump section are all zero */

	from = entry->offset;

	to = entry->offset + entry->buf_size;

	chunk_from = from % GUC_LOG_CHUNK_SIZE;

	chunk_id = from / GUC_LOG_CHUNK_SIZE;

	buf32 = snapshot->copy[chunk_id] + chunk_from;



	for (i = 0; i < entry->buf_size / sizeof(u32); i++)

		if (buf32[i])

			break;



	/* Buffer has non-zero data? */

	if (i < entry->buf_size / sizeof(u32)) {

		struct guc_lfd_data lfd;



		size = xe_guc_log_add_lfd_header(&lfd);

		lfd.header |= FIELD_PREP(GUC_LFD_DATA_HEADER_MASK_TYPE, GUC_LFD_TYPE_FW_CRASH_DUMP);

		/* Calculate data length */

		lfd.data_count = DIV_ROUND_UP(entry->buf_size, sizeof(u32));

		/* Output GUC_LFD_TYPE_FW_CRASH_DUMP header */

		lfd_output_binary(p, (char *)&lfd, size);



		/* rd/wr ptr is not used for crash dump */

		xe_guc_log_print_chunks(p, snapshot, from, to);

	}

	return size;

}



void

xe_guc_log_snapshot_print_lfd(struct xe_guc_log_snapshot *snapshot, struct drm_printer *p);

void
@@ -527,6 +571,7 @@ xe_guc_log_snapshot_print_lfd(struct xe_guc_log_snapshot *snapshot, struct drm_p 
		return;



	xe_guc_log_add_log_event(p, snapshot, &config);

	xe_guc_log_add_crash_dump(p, snapshot, &config);

}



/**