[Intel-gfx] [PATCH 2/8] drm/i915/guc: Add an explicit 'submission_initialized' flag

John.C.Harrison
2022-02-17T23:52:42Z

From: John Harrison <John.C.Harrison@Intel.com>

The LRC descriptor pool is going away. So, stop using it as a check
for whether submission has been initialised or not.

Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
---
drivers/gpu/drm/i915/gt/uc/intel_guc.h | 2 ++
drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c | 8 +++++---
2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc.h b/drivers/gpu/drm/i915/gt/uc/intel_guc.h
index 9d779de16613..568eb6352ef0 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc.h
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc.h
@@ -137,6 +137,8 @@ struct intel_guc {
bool submission_supported;
/** @submission_selected: tracks whether the user enabled GuC submission */
bool submission_selected;
+ /** @submission_initialized: tracks whether GuC submission has been initialised */
+ bool submission_initialized;
/**
* @rc_supported: tracks whether we support GuC rc on the current platform
*/
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
index 7fb889e14995..11bf56b5a266 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc_submission.c
@@ -511,7 +511,7 @@ static void guc_lrc_desc_pool_destroy(struct intel_guc *guc)

static inline bool guc_submission_initialized(struct intel_guc *guc)
{
- return !!guc->lrc_desc_pool_vaddr;
+ return guc->submission_initialized;
}

static inline void _reset_lrc_desc(struct intel_guc *guc, u32 id)
@@ -1813,7 +1813,7 @@ int intel_guc_submission_init(struct intel_guc *guc)
struct intel_gt *gt = guc_to_gt(guc);
int ret;

- if (guc->lrc_desc_pool)
+ if (guc->submission_initialized)
return 0;

ret = guc_lrc_desc_pool_create(guc);
@@ -1845,19 +1845,21 @@ int intel_guc_submission_init(struct intel_guc *guc)
INIT_DELAYED_WORK(&guc->timestamp.work, guc_timestamp_ping);
guc->timestamp.ping_delay = (POLL_TIME_CLKS / gt->clock_frequency + 1) * HZ;
guc->timestamp.shift = gpm_timestamp_shift(gt);
+ guc->submission_initialized = true;

return 0;
}

void intel_guc_submission_fini(struct intel_guc *guc)
{
- if (!guc->lrc_desc_pool)
+ if (!guc->submission_initialized)
return;

guc_flush_destroyed_contexts(guc);
guc_lrc_desc_pool_destroy(guc);
i915_sched_engine_put(guc->sched_engine);
bitmap_free(guc->submission_state.guc_ids_bitmap);
+ guc->submission_initialized = false;
}

static inline void queue_request(struct i915_sched_engine *sched_engine,
--
2.25.1