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drm/xe/guc: Add GuC log event buffer output in LFD format

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Add GuC log event buffer output in LFD format.

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/20251127170759.2620994-5-zhanjun.dong@intel.com
This commit is contained in:
Zhanjun Dong
2025-11-27 12:07:57 -05:00
committed by Ashutosh Dixit
parent 9124732b14
commit fc40e8f6fc
1 changed files with 76 additions and 1 deletions
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77
drivers/gpu/drm/xe/xe_guc_log.c
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@@ -428,6 +428,76 @@ xe_guc_log_output_lfd_init(struct drm_printer *p, struct xe_guc_log_snapshot *sn
return size;
}
static void
xe_guc_log_print_chunks(struct drm_printer *p, struct xe_guc_log_snapshot *snapshot,
u32 from, u32 to)
{
int chunk_from = from % GUC_LOG_CHUNK_SIZE;
int chunk_id = from / GUC_LOG_CHUNK_SIZE;
int to_chunk_id = to / GUC_LOG_CHUNK_SIZE;
int chunk_to = to % GUC_LOG_CHUNK_SIZE;
int pos = from;
do {
size_t size = (to_chunk_id == chunk_id ? chunk_to : GUC_LOG_CHUNK_SIZE) -
chunk_from;
lfd_output_binary(p, snapshot->copy[chunk_id] + chunk_from, size);
pos += size;
chunk_id++;
chunk_from = 0;
} while (pos < to);
}
static inline int
xe_guc_log_add_log_event(struct drm_printer *p, struct xe_guc_log_snapshot *snapshot,
struct guc_lic_save *config)
{
size_t size;
u32 data_len, section_len;
struct guc_lfd_data lfd;
struct guc_log_buffer_entry_list *entry;
struct guc_lfd_data_log_events_buf events_buf;
entry = &config->entry[GUC_LOG_TYPE_EVENT_DATA];
/* Skip empty log */
if (entry->rd_ptr == entry->wr_ptr)
return 0;
size = xe_guc_log_add_lfd_header(&lfd);
lfd.header |= FIELD_PREP(GUC_LFD_DATA_HEADER_MASK_TYPE, GUC_LFD_TYPE_LOG_EVENTS_BUFFER);
events_buf.log_events_format_version = config->version;
/* Adjust to log_format_buf */
section_len = offsetof(struct guc_lfd_data_log_events_buf, log_event);
data_len = section_len;
/* Calculate data length */
data_len += entry->rd_ptr < entry->wr_ptr ? (entry->wr_ptr - entry->rd_ptr) :
(entry->wr_ptr + entry->wrap_offset - entry->rd_ptr);
/* make length u32 aligned */
lfd.data_count = DIV_ROUND_UP(data_len, sizeof(u32));
/* Output GUC_LFD_TYPE_LOG_EVENTS_BUFFER header */
lfd_output_binary(p, (char *)&lfd, size);
lfd_output_binary(p, (char *)&events_buf, section_len);
/* Output data from guc log chunks directly */
if (entry->rd_ptr < entry->wr_ptr) {
xe_guc_log_print_chunks(p, snapshot, entry->offset + entry->rd_ptr,
entry->offset + entry->wr_ptr);
} else {
/* 1st, print from rd to wrap offset */
xe_guc_log_print_chunks(p, snapshot, entry->offset + entry->rd_ptr,
entry->offset + entry->wrap_offset);
/* 2nd, print from buf start to wr */
xe_guc_log_print_chunks(p, snapshot, entry->offset, entry->offset + entry->wr_ptr);
}
return size;
}
void
xe_guc_log_snapshot_print_lfd(struct xe_guc_log_snapshot *snapshot, struct drm_printer *p);
void
@@ -435,6 +505,7 @@ xe_guc_log_snapshot_print_lfd(struct xe_guc_log_snapshot *snapshot, struct drm_p
{
struct guc_lfd_file_header header;
struct guc_lic_save config;
size_t size;
if (!snapshot || !snapshot->size)
return;
@@ -451,7 +522,11 @@ xe_guc_log_snapshot_print_lfd(struct xe_guc_log_snapshot *snapshot, struct drm_p
/* Output LFD stream */
xe_guc_log_load_lic(snapshot->copy[0], &config);
xe_guc_log_output_lfd_init(p, snapshot, &config);
size = xe_guc_log_output_lfd_init(p, snapshot, &config);
if (!size)
return;
xe_guc_log_add_log_event(p, snapshot, &config);
}
/**