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

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

Signed-off-by: Zhanjun Dong <zhanjun.dong@intel.com>
Reviewed-by: Julia Filipchuk <julia.filipchuk@intel.com>
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Link: https://patch.msgid.link/20251127170759.2620994-6-zhanjun.dong@intel.com
This commit is contained in:
Zhanjun Dong
2025-11-27 12:07:58 -05:00
committed by Ashutosh Dixit
parent fc40e8f6fc
commit 09fb6bccef
1 changed files with 45 additions and 0 deletions
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45
drivers/gpu/drm/xe/xe_guc_log.c
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@@ -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);
}
/**