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drm/xe: Add LRC ctx timestamp support functions

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LRC ctx timestamp support functions are used to determine how long a job
has run on the hardware.

v2:
 - Don't use static inlines (Jani)
 - Kernel doc
 - s/ctx_timestamp_job/ctx_job_timestamp
v6:
 - Add kernel doc for xe_lrc_update_timestamp (Lucas)
 - Call xe_lrc_ctx_timestamp() in xe_lrc_update_timestamp (Lucas)

Signed-off-by: Matthew Brost <matthew.brost@intel.com>
Reviewed-by: Jonathan Cavitt <jonathan.cavitt@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240611144053.2805091-2-matthew.brost@intel.com
This commit is contained in:
Matthew Brost 2024-06-11 07:40:43 -07:00
parent e54700f7d6
commit 8b9544e07d
2 changed files with 82 additions and 1 deletions
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78
drivers/gpu/drm/xe/xe_lrc.c
View File

@ -652,6 +652,7 @@ u32 xe_lrc_pphwsp_offset(struct xe_lrc *lrc)
#define LRC_SEQNO_PPHWSP_OFFSET 512
#define LRC_START_SEQNO_PPHWSP_OFFSET (LRC_SEQNO_PPHWSP_OFFSET + 8)
#define LRC_CTX_JOB_TIMESTAMP_OFFSET (LRC_START_SEQNO_PPHWSP_OFFSET + 8)
#define LRC_PARALLEL_PPHWSP_OFFSET 2048
#define LRC_PPHWSP_SIZE SZ_4K
@ -680,6 +681,12 @@ static inline u32 __xe_lrc_start_seqno_offset(struct xe_lrc *lrc)
return xe_lrc_pphwsp_offset(lrc) + LRC_START_SEQNO_PPHWSP_OFFSET;
}
static u32 __xe_lrc_ctx_job_timestamp_offset(struct xe_lrc *lrc)
{
/* The start seqno is stored in the driver-defined portion of PPHWSP */
return xe_lrc_pphwsp_offset(lrc) + LRC_CTX_JOB_TIMESTAMP_OFFSET;
}
static inline u32 __xe_lrc_parallel_offset(struct xe_lrc *lrc)
{
/* The parallel is stored in the driver-defined portion of PPHWSP */
@ -691,6 +698,11 @@ static inline u32 __xe_lrc_regs_offset(struct xe_lrc *lrc)
return xe_lrc_pphwsp_offset(lrc) + LRC_PPHWSP_SIZE;
}
static u32 __xe_lrc_ctx_timestamp_offset(struct xe_lrc *lrc)
{
return __xe_lrc_regs_offset(lrc) + CTX_TIMESTAMP * sizeof(u32);
}
static inline u32 __xe_lrc_indirect_ring_offset(struct xe_lrc *lrc)
{
/* Indirect ring state page is at the very end of LRC */
@ -716,11 +728,65 @@ DECL_MAP_ADDR_HELPERS(pphwsp)
DECL_MAP_ADDR_HELPERS(seqno)
DECL_MAP_ADDR_HELPERS(regs)
DECL_MAP_ADDR_HELPERS(start_seqno)
DECL_MAP_ADDR_HELPERS(ctx_job_timestamp)
DECL_MAP_ADDR_HELPERS(ctx_timestamp)
DECL_MAP_ADDR_HELPERS(parallel)
DECL_MAP_ADDR_HELPERS(indirect_ring)
#undef DECL_MAP_ADDR_HELPERS
/**
* xe_lrc_ctx_timestamp_ggtt_addr() - Get ctx timestamp GGTT address
* @lrc: Pointer to the lrc.
*
* Returns: ctx timestamp GGTT address
*/
u32 xe_lrc_ctx_timestamp_ggtt_addr(struct xe_lrc *lrc)
{
return __xe_lrc_ctx_timestamp_ggtt_addr(lrc);
}
/**
* xe_lrc_ctx_timestamp() - Read ctx timestamp value
* @lrc: Pointer to the lrc.
*
* Returns: ctx timestamp value
*/
u32 xe_lrc_ctx_timestamp(struct xe_lrc *lrc)
{
struct xe_device *xe = lrc_to_xe(lrc);
struct iosys_map map;
map = __xe_lrc_ctx_timestamp_map(lrc);
return xe_map_read32(xe, &map);
}
/**
* xe_lrc_ctx_job_timestamp_ggtt_addr() - Get ctx job timestamp GGTT address
* @lrc: Pointer to the lrc.
*
* Returns: ctx timestamp job GGTT address
*/
u32 xe_lrc_ctx_job_timestamp_ggtt_addr(struct xe_lrc *lrc)
{
return __xe_lrc_ctx_job_timestamp_ggtt_addr(lrc);
}
/**
* xe_lrc_ctx_job_timestamp() - Read ctx job timestamp value
* @lrc: Pointer to the lrc.
*
* Returns: ctx timestamp job value
*/
u32 xe_lrc_ctx_job_timestamp(struct xe_lrc *lrc)
{
struct xe_device *xe = lrc_to_xe(lrc);
struct iosys_map map;
map = __xe_lrc_ctx_job_timestamp_map(lrc);
return xe_map_read32(xe, &map);
}
u32 xe_lrc_ggtt_addr(struct xe_lrc *lrc)
{
return __xe_lrc_pphwsp_ggtt_addr(lrc);
@ -1659,11 +1725,21 @@ void xe_lrc_snapshot_free(struct xe_lrc_snapshot *snapshot)
kfree(snapshot);
}
/**
* xe_lrc_update_timestamp() - Update ctx timestamp
* @lrc: Pointer to the lrc.
* @old_ts: Old timestamp value
*
* Populate @old_ts current saved ctx timestamp, read new ctx timestamp and
* update saved value.
*
* Returns: New ctx timestamp value
*/
u32 xe_lrc_update_timestamp(struct xe_lrc *lrc, u32 *old_ts)
{
*old_ts = lrc->ctx_timestamp;
lrc->ctx_timestamp = xe_lrc_read_ctx_reg(lrc, CTX_TIMESTAMP);
lrc->ctx_timestamp = xe_lrc_ctx_timestamp(lrc);
return lrc->ctx_timestamp;
}

5
drivers/gpu/drm/xe/xe_lrc.h
View File

@ -94,6 +94,11 @@ void xe_lrc_snapshot_capture_delayed(struct xe_lrc_snapshot *snapshot);
void xe_lrc_snapshot_print(struct xe_lrc_snapshot *snapshot, struct drm_printer *p);
void xe_lrc_snapshot_free(struct xe_lrc_snapshot *snapshot);
u32 xe_lrc_ctx_timestamp_ggtt_addr(struct xe_lrc *lrc);
u32 xe_lrc_ctx_timestamp(struct xe_lrc *lrc);
u32 xe_lrc_ctx_job_timestamp_ggtt_addr(struct xe_lrc *lrc);
u32 xe_lrc_ctx_job_timestamp(struct xe_lrc *lrc);
/**
* xe_lrc_update_timestamp - readout LRC timestamp and update cached value
* @lrc: logical ring context for this exec queue