diff options
| author | Maarten Lankhorst <maarten.lankhorst@linux.intel.com> | 2020-08-19 16:08:53 +0200 |
|---|---|---|
| committer | Joonas Lahtinen <joonas.lahtinen@linux.intel.com> | 2020-09-07 14:31:02 +0300 |
| commit | 3999a7087989af0bfb9406b77d3d8444031aab7d (patch) | |
| tree | cd83e17e64f0e7bf5605128706c45ed1e294478d /drivers/gpu/drm/i915/gt/intel_lrc.c | |
| parent | 2bf541ff6d06f4169e198adaa6c4133e178caaa5 (diff) | |
drm/i915: Rework intel_context pinning to do everything outside of pin_mutex
Instead of doing everything inside of pin_mutex, we move all pinning
outside. Because i915_active has its own reference counting and
pinning is also having the same issues vs mutexes, we make sure
everything is pinned first, so the pinning in i915_active only needs
to bump refcounts. This allows us to take pin refcounts correctly
all the time.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Reviewed-by: Thomas Hellström <thomas.hellstrom@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20200819140904.1708856-14-maarten.lankhorst@linux.intel.com
Signed-off-by: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915/gt/intel_lrc.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gt/intel_lrc.c | 34 |
1 files changed, 22 insertions, 12 deletions
diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c index 801ebe1326f3..1f6dc69b2490 100644 --- a/drivers/gpu/drm/i915/gt/intel_lrc.c +++ b/drivers/gpu/drm/i915/gt/intel_lrc.c @@ -3296,7 +3296,10 @@ static void execlists_context_unpin(struct intel_context *ce) { check_redzone((void *)ce->lrc_reg_state - LRC_STATE_OFFSET, ce->engine); +} +static void execlists_context_post_unpin(struct intel_context *ce) +{ i915_gem_object_unpin_map(ce->state->obj); } @@ -3458,20 +3461,23 @@ __execlists_update_reg_state(const struct intel_context *ce, } static int -__execlists_context_pin(struct intel_context *ce, - struct intel_engine_cs *engine) +execlists_context_pre_pin(struct intel_context *ce, void **vaddr) { - void *vaddr; - GEM_BUG_ON(!ce->state); GEM_BUG_ON(!i915_vma_is_pinned(ce->state)); - vaddr = i915_gem_object_pin_map(ce->state->obj, - i915_coherent_map_type(engine->i915) | + *vaddr = i915_gem_object_pin_map(ce->state->obj, + i915_coherent_map_type(ce->engine->i915) | I915_MAP_OVERRIDE); - if (IS_ERR(vaddr)) - return PTR_ERR(vaddr); + return PTR_ERR_OR_ZERO(*vaddr); +} + +static int +__execlists_context_pin(struct intel_context *ce, + struct intel_engine_cs *engine, + void *vaddr) +{ ce->lrc.lrca = lrc_descriptor(ce, engine) | CTX_DESC_FORCE_RESTORE; ce->lrc_reg_state = vaddr + LRC_STATE_OFFSET; __execlists_update_reg_state(ce, engine, ce->ring->tail); @@ -3479,9 +3485,9 @@ __execlists_context_pin(struct intel_context *ce, return 0; } -static int execlists_context_pin(struct intel_context *ce) +static int execlists_context_pin(struct intel_context *ce, void *vaddr) { - return __execlists_context_pin(ce, ce->engine); + return __execlists_context_pin(ce, ce->engine, vaddr); } static int execlists_context_alloc(struct intel_context *ce) @@ -3507,8 +3513,10 @@ static void execlists_context_reset(struct intel_context *ce) static const struct intel_context_ops execlists_context_ops = { .alloc = execlists_context_alloc, + .pre_pin = execlists_context_pre_pin, .pin = execlists_context_pin, .unpin = execlists_context_unpin, + .post_unpin = execlists_context_post_unpin, .enter = intel_context_enter_engine, .exit = intel_context_exit_engine, @@ -5447,12 +5455,12 @@ static int virtual_context_alloc(struct intel_context *ce) return __execlists_context_alloc(ce, ve->siblings[0]); } -static int virtual_context_pin(struct intel_context *ce) +static int virtual_context_pin(struct intel_context *ce, void *vaddr) { struct virtual_engine *ve = container_of(ce, typeof(*ve), context); /* Note: we must use a real engine class for setting up reg state */ - return __execlists_context_pin(ce, ve->siblings[0]); + return __execlists_context_pin(ce, ve->siblings[0], vaddr); } static void virtual_context_enter(struct intel_context *ce) @@ -5480,8 +5488,10 @@ static void virtual_context_exit(struct intel_context *ce) static const struct intel_context_ops virtual_context_ops = { .alloc = virtual_context_alloc, + .pre_pin = execlists_context_pre_pin, .pin = virtual_context_pin, .unpin = execlists_context_unpin, + .post_unpin = execlists_context_post_unpin, .enter = virtual_context_enter, .exit = virtual_context_exit, |