[Intel-gfx] [PATCH 14/23] drm/i915: Make sure execbuffer always passes ww state to i915_vma_pin.
Maarten Lankhorst
maarten.lankhorst at linux.intel.com
Fri Jul 3 12:22:12 UTC 2020
As a preparation step for full object locking and wait/wound handling
during pin and object mapping, ensure that we always pass the ww context
in i915_gem_execbuffer.c to i915_vma_pin, use lockdep to ensure this
happens.
This also requires changing the order of eb_parse slightly, to ensure
we pass ww at a point where we could still handle -EDEADLK safely.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
---
drivers/gpu/drm/i915/display/intel_display.c | 2 +-
drivers/gpu/drm/i915/gem/i915_gem_context.c | 4 +-
.../gpu/drm/i915/gem/i915_gem_execbuffer.c | 138 ++++++++++--------
.../i915/gem/selftests/i915_gem_execbuffer.c | 4 +-
drivers/gpu/drm/i915/gt/gen6_ppgtt.c | 4 +-
drivers/gpu/drm/i915/gt/gen6_ppgtt.h | 4 +-
drivers/gpu/drm/i915/gt/intel_context.c | 65 ++++++---
drivers/gpu/drm/i915/gt/intel_context.h | 13 ++
drivers/gpu/drm/i915/gt/intel_context_types.h | 3 +-
drivers/gpu/drm/i915/gt/intel_engine_cs.c | 2 +-
drivers/gpu/drm/i915/gt/intel_gt.c | 2 +-
drivers/gpu/drm/i915/gt/intel_lrc.c | 5 +-
drivers/gpu/drm/i915/gt/intel_renderstate.c | 2 +-
drivers/gpu/drm/i915/gt/intel_ring.c | 10 +-
drivers/gpu/drm/i915/gt/intel_ring.h | 3 +-
.../gpu/drm/i915/gt/intel_ring_submission.c | 15 +-
drivers/gpu/drm/i915/gt/intel_timeline.c | 12 +-
drivers/gpu/drm/i915/gt/intel_timeline.h | 3 +-
drivers/gpu/drm/i915/gt/mock_engine.c | 3 +-
drivers/gpu/drm/i915/gt/selftest_lrc.c | 2 +-
drivers/gpu/drm/i915/gt/selftest_timeline.c | 4 +-
drivers/gpu/drm/i915/gt/uc/intel_guc.c | 2 +-
drivers/gpu/drm/i915/i915_drv.h | 13 +-
drivers/gpu/drm/i915/i915_gem.c | 11 +-
drivers/gpu/drm/i915/i915_vma.c | 13 +-
drivers/gpu/drm/i915/i915_vma.h | 13 +-
26 files changed, 216 insertions(+), 136 deletions(-)
diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 3c8053480dfe..a317318174ca 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -3450,7 +3450,7 @@ initial_plane_vma(struct drm_i915_private *i915,
if (IS_ERR(vma))
goto err_obj;
- if (i915_ggtt_pin(vma, 0, PIN_MAPPABLE | PIN_OFFSET_FIXED | base))
+ if (i915_ggtt_pin(vma, NULL, 0, PIN_MAPPABLE | PIN_OFFSET_FIXED | base))
goto err_obj;
if (i915_gem_object_is_tiled(obj) &&
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_context.c b/drivers/gpu/drm/i915/gem/i915_gem_context.c
index c01fc27c34c0..855452a413e5 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_context.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_context.c
@@ -1140,7 +1140,7 @@ static int context_barrier_task(struct i915_gem_context *ctx,
i915_gem_ww_ctx_init(&ww, true);
retry:
- err = intel_context_pin(ce);
+ err = intel_context_pin_ww(ce, &ww);
if (err)
goto err;
@@ -1233,7 +1233,7 @@ static int pin_ppgtt_update(struct intel_context *ce, struct i915_gem_ww_ctx *ww
if (!HAS_LOGICAL_RING_CONTEXTS(vm->i915))
/* ppGTT is not part of the legacy context image */
- return gen6_ppgtt_pin(i915_vm_to_ppgtt(vm));
+ return gen6_ppgtt_pin(i915_vm_to_ppgtt(vm), ww);
return 0;
}
diff --git a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
index 5764e72a9d26..6296c60b4242 100644
--- a/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/gem/i915_gem_execbuffer.c
@@ -424,16 +424,17 @@ eb_pin_vma(struct i915_execbuffer *eb,
pin_flags |= PIN_GLOBAL;
/* Attempt to reuse the current location if available */
- if (unlikely(i915_vma_pin(vma, 0, 0, pin_flags))) {
+ /* TODO: Add -EDEADLK handling here */
+ if (unlikely(i915_vma_pin_ww(vma, &eb->ww, 0, 0, pin_flags))) {
if (entry->flags & EXEC_OBJECT_PINNED)
return false;
/* Failing that pick any _free_ space if suitable */
- if (unlikely(i915_vma_pin(vma,
- entry->pad_to_size,
- entry->alignment,
- eb_pin_flags(entry, ev->flags) |
- PIN_USER | PIN_NOEVICT)))
+ if (unlikely(i915_vma_pin_ww(vma, &eb->ww,
+ entry->pad_to_size,
+ entry->alignment,
+ eb_pin_flags(entry, ev->flags) |
+ PIN_USER | PIN_NOEVICT)))
return false;
}
@@ -574,7 +575,7 @@ static inline int use_cpu_reloc(const struct reloc_cache *cache,
obj->cache_level != I915_CACHE_NONE);
}
-static int eb_reserve_vma(const struct i915_execbuffer *eb,
+static int eb_reserve_vma(struct i915_execbuffer *eb,
struct eb_vma *ev,
u64 pin_flags)
{
@@ -589,7 +590,7 @@ static int eb_reserve_vma(const struct i915_execbuffer *eb,
return err;
}
- err = i915_vma_pin(vma,
+ err = i915_vma_pin_ww(vma, &eb->ww,
entry->pad_to_size, entry->alignment,
eb_pin_flags(entry, ev->flags) | pin_flags);
if (err)
@@ -1108,9 +1109,10 @@ static void *reloc_kmap(struct drm_i915_gem_object *obj,
}
static void *reloc_iomap(struct drm_i915_gem_object *obj,
- struct reloc_cache *cache,
+ struct i915_execbuffer *eb,
unsigned long page)
{
+ struct reloc_cache *cache = &eb->reloc_cache;
struct i915_ggtt *ggtt = cache_to_ggtt(cache);
unsigned long offset;
void *vaddr;
@@ -1132,10 +1134,13 @@ static void *reloc_iomap(struct drm_i915_gem_object *obj,
if (err)
return ERR_PTR(err);
- vma = i915_gem_object_ggtt_pin(obj, NULL, 0, 0,
- PIN_MAPPABLE |
- PIN_NONBLOCK /* NOWARN */ |
- PIN_NOEVICT);
+ vma = i915_gem_object_ggtt_pin_ww(obj, &eb->ww, NULL, 0, 0,
+ PIN_MAPPABLE |
+ PIN_NONBLOCK /* NOWARN */ |
+ PIN_NOEVICT);
+ if (vma == ERR_PTR(-EDEADLK))
+ return vma;
+
if (IS_ERR(vma)) {
memset(&cache->node, 0, sizeof(cache->node));
mutex_lock(&ggtt->vm.mutex);
@@ -1171,9 +1176,10 @@ static void *reloc_iomap(struct drm_i915_gem_object *obj,
}
static void *reloc_vaddr(struct drm_i915_gem_object *obj,
- struct reloc_cache *cache,
+ struct i915_execbuffer *eb,
unsigned long page)
{
+ struct reloc_cache *cache = &eb->reloc_cache;
void *vaddr;
if (cache->page == page) {
@@ -1181,7 +1187,7 @@ static void *reloc_vaddr(struct drm_i915_gem_object *obj,
} else {
vaddr = NULL;
if ((cache->vaddr & KMAP) == 0)
- vaddr = reloc_iomap(obj, cache, page);
+ vaddr = reloc_iomap(obj, eb, page);
if (!vaddr)
vaddr = reloc_kmap(obj, cache, page);
}
@@ -1268,7 +1274,7 @@ static int __reloc_gpu_alloc(struct i915_execbuffer *eb,
goto err_unmap;
}
- err = i915_vma_pin(batch, 0, 0, PIN_USER | PIN_NONBLOCK);
+ err = i915_vma_pin_ww(batch, &eb->ww, 0, 0, PIN_USER | PIN_NONBLOCK);
if (err)
goto err_unmap;
@@ -1505,8 +1511,7 @@ relocate_entry(struct i915_vma *vma,
void *vaddr;
repeat:
- vaddr = reloc_vaddr(vma->obj,
- &eb->reloc_cache,
+ vaddr = reloc_vaddr(vma->obj, eb,
offset >> PAGE_SHIFT);
if (IS_ERR(vaddr))
return PTR_ERR(vaddr);
@@ -1922,6 +1927,7 @@ static noinline int eb_relocate_parse_slow(struct i915_execbuffer *eb,
rq = eb_pin_engine(eb, false);
if (IS_ERR(rq)) {
err = PTR_ERR(rq);
+ rq = NULL;
goto err;
}
@@ -2204,7 +2210,8 @@ static int i915_reset_gen7_sol_offsets(struct i915_request *rq)
}
static struct i915_vma *
-shadow_batch_pin(struct drm_i915_gem_object *obj,
+shadow_batch_pin(struct i915_execbuffer *eb,
+ struct drm_i915_gem_object *obj,
struct i915_address_space *vm,
unsigned int flags)
{
@@ -2215,7 +2222,7 @@ shadow_batch_pin(struct drm_i915_gem_object *obj,
if (IS_ERR(vma))
return vma;
- err = i915_vma_pin(vma, 0, 0, flags);
+ err = i915_vma_pin_ww(vma, &eb->ww, 0, 0, flags);
if (err)
return ERR_PTR(err);
@@ -2365,16 +2372,33 @@ static int eb_parse_pipeline(struct i915_execbuffer *eb,
return err;
}
+static struct i915_vma *eb_dispatch_secure(struct i915_execbuffer *eb, struct i915_vma *vma)
+{
+ /*
+ * snb/ivb/vlv conflate the "batch in ppgtt" bit with the "non-secure
+ * batch" bit. Hence we need to pin secure batches into the global gtt.
+ * hsw should have this fixed, but bdw mucks it up again. */
+ if (eb->batch_flags & I915_DISPATCH_SECURE)
+ return i915_gem_object_ggtt_pin_ww(vma->obj, &eb->ww, NULL, 0, 0, 0);
+
+ return NULL;
+}
+
static int eb_parse(struct i915_execbuffer *eb)
{
struct drm_i915_private *i915 = eb->i915;
struct intel_gt_buffer_pool_node *pool = eb->batch_pool;
- struct i915_vma *shadow, *trampoline;
+ struct i915_vma *shadow, *trampoline, *batch;
unsigned int len;
int err;
- if (!eb_use_cmdparser(eb))
- return 0;
+ if (!eb_use_cmdparser(eb)) {
+ batch = eb_dispatch_secure(eb, eb->batch->vma);
+ if (IS_ERR(batch))
+ return PTR_ERR(batch);
+
+ goto secure_batch;
+ }
len = eb->batch_len;
if (!CMDPARSER_USES_GGTT(eb->i915)) {
@@ -2402,7 +2426,7 @@ static int eb_parse(struct i915_execbuffer *eb)
if (err)
goto err;
- shadow = shadow_batch_pin(pool->obj, eb->context->vm, PIN_USER);
+ shadow = shadow_batch_pin(eb, pool->obj, eb->context->vm, PIN_USER);
if (IS_ERR(shadow)) {
err = PTR_ERR(shadow);
goto err;
@@ -2414,7 +2438,7 @@ static int eb_parse(struct i915_execbuffer *eb)
if (CMDPARSER_USES_GGTT(eb->i915)) {
trampoline = shadow;
- shadow = shadow_batch_pin(pool->obj,
+ shadow = shadow_batch_pin(eb, pool->obj,
&eb->engine->gt->ggtt->vm,
PIN_GLOBAL);
if (IS_ERR(shadow)) {
@@ -2427,19 +2451,34 @@ static int eb_parse(struct i915_execbuffer *eb)
eb->batch_flags |= I915_DISPATCH_SECURE;
}
+ batch = eb_dispatch_secure(eb, shadow);
+ if (IS_ERR(batch)) {
+ err = PTR_ERR(batch);
+ goto err_trampoline;
+ }
+
err = eb_parse_pipeline(eb, shadow, trampoline);
if (err)
- goto err_trampoline;
+ goto err_unpin_batch;
- eb->vma[eb->buffer_count].vma = i915_vma_get(shadow);
- eb->vma[eb->buffer_count].flags = __EXEC_OBJECT_HAS_PIN;
eb->batch = &eb->vma[eb->buffer_count++];
+ eb->batch->vma = i915_vma_get(shadow);
+ eb->batch->flags = __EXEC_OBJECT_HAS_PIN;
eb->trampoline = trampoline;
eb->batch_start_offset = 0;
+secure_batch:
+ if (batch) {
+ eb->batch = &eb->vma[eb->buffer_count++];
+ eb->batch->flags = __EXEC_OBJECT_HAS_PIN;
+ eb->batch->vma = i915_vma_get(batch);
+ }
return 0;
+err_unpin_batch:
+ if (batch)
+ i915_vma_unpin(batch);
err_trampoline:
if (trampoline)
i915_vma_unpin(trampoline);
@@ -2594,7 +2633,7 @@ static struct i915_request *eb_pin_engine(struct i915_execbuffer *eb, bool throt
* GGTT space, so do this first before we reserve a seqno for
* ourselves.
*/
- err = intel_context_pin(ce);
+ err = intel_context_pin_ww(ce, &eb->ww);
if (err)
return ERR_PTR(err);
@@ -3017,33 +3056,7 @@ i915_gem_do_execbuffer(struct drm_device *dev,
ww_acquire_done(&eb.ww.ctx);
- /*
- * snb/ivb/vlv conflate the "batch in ppgtt" bit with the "non-secure
- * batch" bit. Hence we need to pin secure batches into the global gtt.
- * hsw should have this fixed, but bdw mucks it up again. */
- if (eb.batch_flags & I915_DISPATCH_SECURE) {
- struct i915_vma *vma;
-
- /*
- * So on first glance it looks freaky that we pin the batch here
- * outside of the reservation loop. But:
- * - The batch is already pinned into the relevant ppgtt, so we
- * already have the backing storage fully allocated.
- * - No other BO uses the global gtt (well contexts, but meh),
- * so we don't really have issues with multiple objects not
- * fitting due to fragmentation.
- * So this is actually safe.
- */
- vma = i915_gem_object_ggtt_pin(eb.batch->vma->obj, NULL, 0, 0, 0);
- if (IS_ERR(vma)) {
- err = PTR_ERR(vma);
- goto err_vma;
- }
-
- batch = vma;
- } else {
- batch = eb.batch->vma;
- }
+ batch = eb.batch->vma;
/* All GPU relocation batches must be submitted prior to the user rq */
GEM_BUG_ON(eb.reloc_cache.rq);
@@ -3052,7 +3065,7 @@ i915_gem_do_execbuffer(struct drm_device *dev,
eb.request = i915_request_create(eb.context);
if (IS_ERR(eb.request)) {
err = PTR_ERR(eb.request);
- goto err_batch_unpin;
+ goto err_vma;
}
if (in_fence) {
@@ -3114,9 +3127,6 @@ i915_gem_do_execbuffer(struct drm_device *dev,
}
i915_request_put(eb.request);
-err_batch_unpin:
- if (eb.batch_flags & I915_DISPATCH_SECURE)
- i915_vma_unpin(batch);
err_vma:
eb_release_vmas(&eb, true);
if (eb.trampoline)
@@ -3200,7 +3210,9 @@ i915_gem_execbuffer_ioctl(struct drm_device *dev, void *data,
/* Copy in the exec list from userland */
exec_list = kvmalloc_array(count, sizeof(*exec_list),
__GFP_NOWARN | GFP_KERNEL);
- exec2_list = kvmalloc_array(count + 1, eb_element_size(),
+
+ /* Allocate extra slots for use by the command parser */
+ exec2_list = kvmalloc_array(count + 2, eb_element_size(),
__GFP_NOWARN | GFP_KERNEL);
if (exec_list == NULL || exec2_list == NULL) {
drm_dbg(&i915->drm,
@@ -3278,8 +3290,8 @@ i915_gem_execbuffer2_ioctl(struct drm_device *dev, void *data,
if (err)
return err;
- /* Allocate an extra slot for use by the command parser */
- exec2_list = kvmalloc_array(count + 1, eb_element_size(),
+ /* Allocate extra slots for use by the command parser */
+ exec2_list = kvmalloc_array(count + 2, eb_element_size(),
__GFP_NOWARN | GFP_KERNEL);
if (exec2_list == NULL) {
drm_dbg(&i915->drm, "Failed to allocate exec list for %zd buffers\n",
diff --git a/drivers/gpu/drm/i915/gem/selftests/i915_gem_execbuffer.c b/drivers/gpu/drm/i915/gem/selftests/i915_gem_execbuffer.c
index bc08c02b5767..1df5bf73a4cb 100644
--- a/drivers/gpu/drm/i915/gem/selftests/i915_gem_execbuffer.c
+++ b/drivers/gpu/drm/i915/gem/selftests/i915_gem_execbuffer.c
@@ -36,7 +36,7 @@ static int __igt_gpu_reloc(struct i915_execbuffer *eb,
if (err)
return err;
- err = i915_vma_pin(vma, 0, 0, PIN_USER | PIN_HIGH);
+ err = i915_vma_pin_ww(vma, &eb->ww, 0, 0, PIN_USER | PIN_HIGH);
if (err)
return err;
@@ -138,7 +138,7 @@ static int igt_gpu_reloc(void *arg)
i915_gem_ww_ctx_init(&eb.ww, false);
retry:
- err = intel_context_pin(eb.context);
+ err = intel_context_pin_ww(eb.context, &eb.ww);
if (!err) {
err = __igt_gpu_reloc(&eb, scratch);
diff --git a/drivers/gpu/drm/i915/gt/gen6_ppgtt.c b/drivers/gpu/drm/i915/gt/gen6_ppgtt.c
index f4fec7eb4064..8248efa9229f 100644
--- a/drivers/gpu/drm/i915/gt/gen6_ppgtt.c
+++ b/drivers/gpu/drm/i915/gt/gen6_ppgtt.c
@@ -376,7 +376,7 @@ static struct i915_vma *pd_vma_create(struct gen6_ppgtt *ppgtt, int size)
return vma;
}
-int gen6_ppgtt_pin(struct i915_ppgtt *base)
+int gen6_ppgtt_pin(struct i915_ppgtt *base, struct i915_gem_ww_ctx *ww)
{
struct gen6_ppgtt *ppgtt = to_gen6_ppgtt(base);
int err;
@@ -402,7 +402,7 @@ int gen6_ppgtt_pin(struct i915_ppgtt *base)
*/
err = 0;
if (!atomic_read(&ppgtt->pin_count))
- err = i915_ggtt_pin(ppgtt->vma, GEN6_PD_ALIGN, PIN_HIGH);
+ err = i915_ggtt_pin(ppgtt->vma, ww, GEN6_PD_ALIGN, PIN_HIGH);
if (!err)
atomic_inc(&ppgtt->pin_count);
mutex_unlock(&ppgtt->pin_mutex);
diff --git a/drivers/gpu/drm/i915/gt/gen6_ppgtt.h b/drivers/gpu/drm/i915/gt/gen6_ppgtt.h
index 72e481806c96..00032a931bae 100644
--- a/drivers/gpu/drm/i915/gt/gen6_ppgtt.h
+++ b/drivers/gpu/drm/i915/gt/gen6_ppgtt.h
@@ -8,6 +8,8 @@
#include "intel_gtt.h"
+struct i915_gem_ww_ctx;
+
struct gen6_ppgtt {
struct i915_ppgtt base;
@@ -66,7 +68,7 @@ static inline struct gen6_ppgtt *to_gen6_ppgtt(struct i915_ppgtt *base)
(pt = i915_pt_entry(pd, iter), true); \
++iter)
-int gen6_ppgtt_pin(struct i915_ppgtt *base);
+int gen6_ppgtt_pin(struct i915_ppgtt *base, struct i915_gem_ww_ctx *ww);
void gen6_ppgtt_unpin(struct i915_ppgtt *base);
void gen6_ppgtt_unpin_all(struct i915_ppgtt *base);
void gen6_ppgtt_enable(struct intel_gt *gt);
diff --git a/drivers/gpu/drm/i915/gt/intel_context.c b/drivers/gpu/drm/i915/gt/intel_context.c
index c039e87a46c4..64948386630f 100644
--- a/drivers/gpu/drm/i915/gt/intel_context.c
+++ b/drivers/gpu/drm/i915/gt/intel_context.c
@@ -93,12 +93,12 @@ static void intel_context_active_release(struct intel_context *ce)
i915_active_release(&ce->active);
}
-static int __context_pin_state(struct i915_vma *vma)
+static int __context_pin_state(struct i915_vma *vma, struct i915_gem_ww_ctx *ww)
{
unsigned int bias = i915_ggtt_pin_bias(vma) | PIN_OFFSET_BIAS;
int err;
- err = i915_ggtt_pin(vma, 0, bias | PIN_HIGH);
+ err = i915_ggtt_pin(vma, ww, 0, bias | PIN_HIGH);
if (err)
return err;
@@ -127,7 +127,8 @@ static void __context_unpin_state(struct i915_vma *vma)
__i915_vma_unpin(vma);
}
-static int __ring_active(struct intel_ring *ring)
+static int __ring_active(struct intel_ring *ring,
+ struct i915_gem_ww_ctx *ww)
{
int err;
@@ -135,7 +136,7 @@ static int __ring_active(struct intel_ring *ring)
if (err)
return err;
- err = intel_ring_pin(ring);
+ err = intel_ring_pin(ring, ww);
if (err)
goto err_active;
@@ -152,24 +153,25 @@ static void __ring_retire(struct intel_ring *ring)
i915_active_release(&ring->vma->active);
}
-static int intel_context_pre_pin(struct intel_context *ce)
+static int intel_context_pre_pin(struct intel_context *ce,
+ struct i915_gem_ww_ctx *ww)
{
int err;
CE_TRACE(ce, "active\n");
- err = __ring_active(ce->ring);
+ err = __ring_active(ce->ring, ww);
if (err)
return err;
- err = intel_timeline_pin(ce->timeline);
+ err = intel_timeline_pin(ce->timeline, ww);
if (err)
goto err_ring;
if (!ce->state)
return 0;
- err = __context_pin_state(ce->state);
+ err = __context_pin_state(ce->state, ww);
if (err)
goto err_timeline;
@@ -192,7 +194,8 @@ static void intel_context_post_unpin(struct intel_context *ce)
__ring_retire(ce->ring);
}
-int __intel_context_do_pin(struct intel_context *ce)
+int __intel_context_do_pin_ww(struct intel_context *ce,
+ struct i915_gem_ww_ctx *ww)
{
bool handoff = false;
void *vaddr;
@@ -209,7 +212,14 @@ int __intel_context_do_pin(struct intel_context *ce)
* refcount for __intel_context_active(), which prevent a lock
* inversion of ce->pin_mutex vs dma_resv_lock().
*/
- err = intel_context_pre_pin(ce);
+
+ err = i915_gem_object_lock(ce->timeline->hwsp_ggtt->obj, ww);
+ if (!err && ce->ring->vma->obj)
+ err = i915_gem_object_lock(ce->ring->vma->obj, ww);
+ if (!err && ce->state)
+ err = i915_gem_object_lock(ce->state->obj, ww);
+ if (!err)
+ err = intel_context_pre_pin(ce, ww);
if (err)
return err;
@@ -217,7 +227,7 @@ int __intel_context_do_pin(struct intel_context *ce)
if (err)
goto err_ctx_unpin;
- err = ce->ops->pre_pin(ce, &vaddr);
+ err = ce->ops->pre_pin(ce, ww, &vaddr);
if (err)
goto err_release;
@@ -264,6 +274,23 @@ int __intel_context_do_pin(struct intel_context *ce)
return err;
}
+int __intel_context_do_pin(struct intel_context *ce)
+{
+ struct i915_gem_ww_ctx ww;
+ int err;
+
+ i915_gem_ww_ctx_init(&ww, true);
+retry:
+ err = __intel_context_do_pin_ww(ce, &ww);
+ if (err == -EDEADLK) {
+ err = i915_gem_ww_ctx_backoff(&ww);
+ if (!err)
+ goto retry;
+ }
+ i915_gem_ww_ctx_fini(&ww);
+ return err;
+}
+
void intel_context_unpin(struct intel_context *ce)
{
if (!atomic_dec_and_test(&ce->pin_count))
@@ -301,18 +328,14 @@ static void __intel_context_retire(struct i915_active *active)
static int __intel_context_active(struct i915_active *active)
{
struct intel_context *ce = container_of(active, typeof(*ce), active);
- int err;
intel_context_get(ce);
/* everything should already be activated by intel_context_pre_pin() */
- err = __ring_active(ce->ring);
- if (GEM_WARN_ON(err))
- goto err_put;
+ GEM_WARN_ON(!i915_active_acquire_if_busy(&ce->ring->vma->active));
+ __intel_ring_pin(ce->ring);
- err = intel_timeline_pin(ce->timeline);
- if (GEM_WARN_ON(err))
- goto err_ring;
+ __intel_timeline_pin(ce->timeline);
if (ce->state) {
GEM_WARN_ON(!i915_active_acquire_if_busy(&ce->state->active));
@@ -321,12 +344,6 @@ static int __intel_context_active(struct i915_active *active)
}
return 0;
-
-err_ring:
- __ring_retire(ce->ring);
-err_put:
- intel_context_put(ce);
- return err;
}
void
diff --git a/drivers/gpu/drm/i915/gt/intel_context.h b/drivers/gpu/drm/i915/gt/intel_context.h
index 07be021882cc..fda2eba81e22 100644
--- a/drivers/gpu/drm/i915/gt/intel_context.h
+++ b/drivers/gpu/drm/i915/gt/intel_context.h
@@ -25,6 +25,8 @@
##__VA_ARGS__); \
} while (0)
+struct i915_gem_ww_ctx;
+
void intel_context_init(struct intel_context *ce,
struct intel_engine_cs *engine);
void intel_context_fini(struct intel_context *ce);
@@ -81,6 +83,8 @@ static inline void intel_context_unlock_pinned(struct intel_context *ce)
}
int __intel_context_do_pin(struct intel_context *ce);
+int __intel_context_do_pin_ww(struct intel_context *ce,
+ struct i915_gem_ww_ctx *ww);
static inline bool intel_context_pin_if_active(struct intel_context *ce)
{
@@ -95,6 +99,15 @@ static inline int intel_context_pin(struct intel_context *ce)
return __intel_context_do_pin(ce);
}
+static inline int intel_context_pin_ww(struct intel_context *ce,
+ struct i915_gem_ww_ctx *ww)
+{
+ if (likely(intel_context_pin_if_active(ce)))
+ return 0;
+
+ return __intel_context_do_pin_ww(ce, ww);
+}
+
static inline void __intel_context_pin(struct intel_context *ce)
{
GEM_BUG_ON(!intel_context_is_pinned(ce));
diff --git a/drivers/gpu/drm/i915/gt/intel_context_types.h b/drivers/gpu/drm/i915/gt/intel_context_types.h
index ca8e05b4d3ef..552cb57a2e8c 100644
--- a/drivers/gpu/drm/i915/gt/intel_context_types.h
+++ b/drivers/gpu/drm/i915/gt/intel_context_types.h
@@ -23,6 +23,7 @@
DECLARE_EWMA(runtime, 3, 8);
struct i915_gem_context;
+struct i915_gem_ww_ctx;
struct i915_vma;
struct intel_context;
struct intel_ring;
@@ -30,7 +31,7 @@ struct intel_ring;
struct intel_context_ops {
int (*alloc)(struct intel_context *ce);
- int (*pre_pin)(struct intel_context *ce, void **vaddr);
+ int (*pre_pin)(struct intel_context *ce, struct i915_gem_ww_ctx *ww, void **vaddr);
int (*pin)(struct intel_context *ce, void *vaddr);
void (*unpin)(struct intel_context *ce);
void (*post_unpin)(struct intel_context *ce);
diff --git a/drivers/gpu/drm/i915/gt/intel_engine_cs.c b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
index 7bf2f76212f0..8167c4b2f795 100644
--- a/drivers/gpu/drm/i915/gt/intel_engine_cs.c
+++ b/drivers/gpu/drm/i915/gt/intel_engine_cs.c
@@ -559,7 +559,7 @@ static int pin_ggtt_status_page(struct intel_engine_cs *engine,
else
flags = PIN_HIGH;
- return i915_ggtt_pin(vma, 0, flags);
+ return i915_ggtt_pin(vma, NULL, 0, flags);
}
static int init_status_page(struct intel_engine_cs *engine)
diff --git a/drivers/gpu/drm/i915/gt/intel_gt.c b/drivers/gpu/drm/i915/gt/intel_gt.c
index 24a0e47a2477..1942f53a60c2 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt.c
+++ b/drivers/gpu/drm/i915/gt/intel_gt.c
@@ -348,7 +348,7 @@ static int intel_gt_init_scratch(struct intel_gt *gt, unsigned int size)
goto err_unref;
}
- ret = i915_ggtt_pin(vma, 0, PIN_HIGH);
+ ret = i915_ggtt_pin(vma, NULL, 0, PIN_HIGH);
if (ret)
goto err_unref;
diff --git a/drivers/gpu/drm/i915/gt/intel_lrc.c b/drivers/gpu/drm/i915/gt/intel_lrc.c
index 3dca5e5d8451..7c016f5e244f 100644
--- a/drivers/gpu/drm/i915/gt/intel_lrc.c
+++ b/drivers/gpu/drm/i915/gt/intel_lrc.c
@@ -3444,7 +3444,8 @@ __execlists_update_reg_state(const struct intel_context *ce,
}
static int
-execlists_context_pre_pin(struct intel_context *ce, void **vaddr)
+execlists_context_pre_pin(struct intel_context *ce,
+ struct i915_gem_ww_ctx *ww, void **vaddr)
{
GEM_BUG_ON(!ce->state);
GEM_BUG_ON(!i915_vma_is_pinned(ce->state));
@@ -3863,7 +3864,7 @@ static int lrc_setup_wa_ctx(struct intel_engine_cs *engine)
goto err;
}
- err = i915_ggtt_pin(vma, 0, PIN_HIGH);
+ err = i915_ggtt_pin(vma, NULL, 0, PIN_HIGH);
if (err)
goto err;
diff --git a/drivers/gpu/drm/i915/gt/intel_renderstate.c b/drivers/gpu/drm/i915/gt/intel_renderstate.c
index 3f7881de6a3c..76b39f4c29b5 100644
--- a/drivers/gpu/drm/i915/gt/intel_renderstate.c
+++ b/drivers/gpu/drm/i915/gt/intel_renderstate.c
@@ -184,7 +184,7 @@ int intel_renderstate_init(struct intel_renderstate *so,
i915_gem_ww_ctx_init(&so->ww, true);
retry:
- err = intel_context_pin(ce);
+ err = intel_context_pin_ww(ce, &so->ww);
if (err)
goto err_fini;
diff --git a/drivers/gpu/drm/i915/gt/intel_ring.c b/drivers/gpu/drm/i915/gt/intel_ring.c
index bdb324167ef3..4034a4bac7f0 100644
--- a/drivers/gpu/drm/i915/gt/intel_ring.c
+++ b/drivers/gpu/drm/i915/gt/intel_ring.c
@@ -21,7 +21,13 @@ unsigned int intel_ring_update_space(struct intel_ring *ring)
return space;
}
-int intel_ring_pin(struct intel_ring *ring)
+void __intel_ring_pin(struct intel_ring *ring)
+{
+ GEM_BUG_ON(!atomic_read(&ring->pin_count));
+ atomic_inc(&ring->pin_count);
+}
+
+int intel_ring_pin(struct intel_ring *ring, struct i915_gem_ww_ctx *ww)
{
struct i915_vma *vma = ring->vma;
unsigned int flags;
@@ -39,7 +45,7 @@ int intel_ring_pin(struct intel_ring *ring)
else
flags |= PIN_HIGH;
- ret = i915_ggtt_pin(vma, 0, flags);
+ ret = i915_ggtt_pin(vma, ww, 0, flags);
if (unlikely(ret))
goto err_unpin;
diff --git a/drivers/gpu/drm/i915/gt/intel_ring.h b/drivers/gpu/drm/i915/gt/intel_ring.h
index cc0ebca65167..1700579bdc93 100644
--- a/drivers/gpu/drm/i915/gt/intel_ring.h
+++ b/drivers/gpu/drm/i915/gt/intel_ring.h
@@ -21,7 +21,8 @@ int intel_ring_cacheline_align(struct i915_request *rq);
unsigned int intel_ring_update_space(struct intel_ring *ring);
-int intel_ring_pin(struct intel_ring *ring);
+void __intel_ring_pin(struct intel_ring *ring);
+int intel_ring_pin(struct intel_ring *ring, struct i915_gem_ww_ctx *ww);
void intel_ring_unpin(struct intel_ring *ring);
void intel_ring_reset(struct intel_ring *ring, u32 tail);
diff --git a/drivers/gpu/drm/i915/gt/intel_ring_submission.c b/drivers/gpu/drm/i915/gt/intel_ring_submission.c
index 6914abf3a88d..4201b9841fd7 100644
--- a/drivers/gpu/drm/i915/gt/intel_ring_submission.c
+++ b/drivers/gpu/drm/i915/gt/intel_ring_submission.c
@@ -474,14 +474,16 @@ static void ring_context_destroy(struct kref *ref)
intel_context_free(ce);
}
-static int __context_pin_ppgtt(struct intel_context *ce)
+static int ring_context_pre_pin(struct intel_context *ce,
+ struct i915_gem_ww_ctx *ww,
+ void **unused)
{
struct i915_address_space *vm;
int err = 0;
vm = vm_alias(ce->vm);
if (vm)
- err = gen6_ppgtt_pin(i915_vm_to_ppgtt((vm)));
+ err = gen6_ppgtt_pin(i915_vm_to_ppgtt((vm)), ww);
return err;
}
@@ -588,11 +590,6 @@ static int ring_context_alloc(struct intel_context *ce)
return 0;
}
-static int ring_context_pre_pin(struct intel_context *ce, void **unused)
-{
- return __context_pin_ppgtt(ce);
-}
-
static int ring_context_pin(struct intel_context *ce, void *unused)
{
return 0;
@@ -1268,7 +1265,7 @@ int intel_ring_submission_setup(struct intel_engine_cs *engine)
}
GEM_BUG_ON(timeline->has_initial_breadcrumb);
- err = intel_timeline_pin(timeline);
+ err = intel_timeline_pin(timeline, NULL);
if (err)
goto err_timeline;
@@ -1278,7 +1275,7 @@ int intel_ring_submission_setup(struct intel_engine_cs *engine)
goto err_timeline_unpin;
}
- err = intel_ring_pin(ring);
+ err = intel_ring_pin(ring, NULL);
if (err)
goto err_ring;
diff --git a/drivers/gpu/drm/i915/gt/intel_timeline.c b/drivers/gpu/drm/i915/gt/intel_timeline.c
index 4546284fede1..e53f958bb819 100644
--- a/drivers/gpu/drm/i915/gt/intel_timeline.c
+++ b/drivers/gpu/drm/i915/gt/intel_timeline.c
@@ -313,14 +313,20 @@ intel_timeline_create(struct intel_gt *gt, struct i915_vma *global_hwsp)
return timeline;
}
-int intel_timeline_pin(struct intel_timeline *tl)
+void __intel_timeline_pin(struct intel_timeline *tl)
+{
+ GEM_BUG_ON(!atomic_read(&tl->pin_count));
+ atomic_inc(&tl->pin_count);
+}
+
+int intel_timeline_pin(struct intel_timeline *tl, struct i915_gem_ww_ctx *ww)
{
int err;
if (atomic_add_unless(&tl->pin_count, 1, 0))
return 0;
- err = i915_ggtt_pin(tl->hwsp_ggtt, 0, PIN_HIGH);
+ err = i915_ggtt_pin(tl->hwsp_ggtt, ww, 0, PIN_HIGH);
if (err)
return err;
@@ -460,7 +466,7 @@ __intel_timeline_get_seqno(struct intel_timeline *tl,
goto err_rollback;
}
- err = i915_ggtt_pin(vma, 0, PIN_HIGH);
+ err = i915_ggtt_pin(vma, NULL, 0, PIN_HIGH);
if (err) {
__idle_hwsp_free(vma->private, cacheline);
goto err_rollback;
diff --git a/drivers/gpu/drm/i915/gt/intel_timeline.h b/drivers/gpu/drm/i915/gt/intel_timeline.h
index 4298b9ac7327..ff293dfdbc3b 100644
--- a/drivers/gpu/drm/i915/gt/intel_timeline.h
+++ b/drivers/gpu/drm/i915/gt/intel_timeline.h
@@ -71,7 +71,8 @@ static inline bool intel_timeline_sync_is_later(struct intel_timeline *tl,
return __intel_timeline_sync_is_later(tl, fence->context, fence->seqno);
}
-int intel_timeline_pin(struct intel_timeline *tl);
+void __intel_timeline_pin(struct intel_timeline *tl);
+int intel_timeline_pin(struct intel_timeline *tl, struct i915_gem_ww_ctx *ww);
void intel_timeline_enter(struct intel_timeline *tl);
int intel_timeline_get_seqno(struct intel_timeline *tl,
struct i915_request *rq,
diff --git a/drivers/gpu/drm/i915/gt/mock_engine.c b/drivers/gpu/drm/i915/gt/mock_engine.c
index 62664601e683..f349cb9115ce 100644
--- a/drivers/gpu/drm/i915/gt/mock_engine.c
+++ b/drivers/gpu/drm/i915/gt/mock_engine.c
@@ -168,7 +168,8 @@ static int mock_context_alloc(struct intel_context *ce)
return 0;
}
-static int mock_context_pre_pin(struct intel_context *ce, void **unused)
+static int mock_context_pre_pin(struct intel_context *ce,
+ struct i915_gem_ww_ctx *ww, void **unused)
{
return 0;
}
diff --git a/drivers/gpu/drm/i915/gt/selftest_lrc.c b/drivers/gpu/drm/i915/gt/selftest_lrc.c
index daa4aabab9a7..19ae1e6ba976 100644
--- a/drivers/gpu/drm/i915/gt/selftest_lrc.c
+++ b/drivers/gpu/drm/i915/gt/selftest_lrc.c
@@ -3090,7 +3090,7 @@ static struct i915_vma *create_global(struct intel_gt *gt, size_t sz)
return vma;
}
- err = i915_ggtt_pin(vma, 0, 0);
+ err = i915_ggtt_pin(vma, NULL, 0, 0);
if (err) {
i915_vma_put(vma);
return ERR_PTR(err);
diff --git a/drivers/gpu/drm/i915/gt/selftest_timeline.c b/drivers/gpu/drm/i915/gt/selftest_timeline.c
index fcdee951579b..efeb354c81ad 100644
--- a/drivers/gpu/drm/i915/gt/selftest_timeline.c
+++ b/drivers/gpu/drm/i915/gt/selftest_timeline.c
@@ -455,7 +455,7 @@ tl_write(struct intel_timeline *tl, struct intel_engine_cs *engine, u32 value)
struct i915_request *rq;
int err;
- err = intel_timeline_pin(tl);
+ err = intel_timeline_pin(tl, NULL);
if (err) {
rq = ERR_PTR(err);
goto out;
@@ -665,7 +665,7 @@ static int live_hwsp_wrap(void *arg)
if (!tl->has_initial_breadcrumb || !tl->hwsp_cacheline)
goto out_free;
- err = intel_timeline_pin(tl);
+ err = intel_timeline_pin(tl, NULL);
if (err)
goto out_free;
diff --git a/drivers/gpu/drm/i915/gt/uc/intel_guc.c b/drivers/gpu/drm/i915/gt/uc/intel_guc.c
index 861657897c0f..942c7c187adb 100644
--- a/drivers/gpu/drm/i915/gt/uc/intel_guc.c
+++ b/drivers/gpu/drm/i915/gt/uc/intel_guc.c
@@ -677,7 +677,7 @@ struct i915_vma *intel_guc_allocate_vma(struct intel_guc *guc, u32 size)
goto err;
flags = PIN_OFFSET_BIAS | i915_ggtt_pin_bias(vma);
- ret = i915_ggtt_pin(vma, 0, flags);
+ ret = i915_ggtt_pin(vma, NULL, 0, flags);
if (ret) {
vma = ERR_PTR(ret);
goto err;
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 2c2e88d49f3e..cb2ae5542174 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1778,11 +1778,18 @@ static inline void i915_gem_drain_workqueue(struct drm_i915_private *i915)
}
struct i915_vma * __must_check
+i915_gem_object_ggtt_pin_ww(struct drm_i915_gem_object *obj,
+ struct i915_gem_ww_ctx *ww,
+ const struct i915_ggtt_view *view,
+ u64 size, u64 alignment, u64 flags);
+
+static inline struct i915_vma * __must_check
i915_gem_object_ggtt_pin(struct drm_i915_gem_object *obj,
const struct i915_ggtt_view *view,
- u64 size,
- u64 alignment,
- u64 flags);
+ u64 size, u64 alignment, u64 flags)
+{
+ return i915_gem_object_ggtt_pin_ww(obj, NULL, view, size, alignment, flags);
+}
int i915_gem_object_unbind(struct drm_i915_gem_object *obj,
unsigned long flags);
diff --git a/drivers/gpu/drm/i915/i915_gem.c b/drivers/gpu/drm/i915/i915_gem.c
index 20653b660b61..625b4fc8842f 100644
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -962,11 +962,10 @@ static void discard_ggtt_vma(struct i915_vma *vma)
}
struct i915_vma *
-i915_gem_object_ggtt_pin(struct drm_i915_gem_object *obj,
- const struct i915_ggtt_view *view,
- u64 size,
- u64 alignment,
- u64 flags)
+i915_gem_object_ggtt_pin_ww(struct drm_i915_gem_object *obj,
+ struct i915_gem_ww_ctx *ww,
+ const struct i915_ggtt_view *view,
+ u64 size, u64 alignment, u64 flags)
{
struct drm_i915_private *i915 = to_i915(obj->base.dev);
struct i915_ggtt *ggtt = &i915->ggtt;
@@ -1032,7 +1031,7 @@ i915_gem_object_ggtt_pin(struct drm_i915_gem_object *obj,
return ERR_PTR(ret);
}
- ret = i915_vma_pin(vma, size, alignment, flags | PIN_GLOBAL);
+ ret = i915_vma_pin_ww(vma, ww, size, alignment, flags | PIN_GLOBAL);
if (ret)
return ERR_PTR(ret);
diff --git a/drivers/gpu/drm/i915/i915_vma.c b/drivers/gpu/drm/i915/i915_vma.c
index f4e22e256ac6..3497a4f1c98a 100644
--- a/drivers/gpu/drm/i915/i915_vma.c
+++ b/drivers/gpu/drm/i915/i915_vma.c
@@ -853,13 +853,19 @@ static void vma_unbind_pages(struct i915_vma *vma)
__vma_put_pages(vma, count | count << I915_VMA_PAGES_BIAS);
}
-int i915_vma_pin(struct i915_vma *vma, u64 size, u64 alignment, u64 flags)
+int i915_vma_pin_ww(struct i915_vma *vma, struct i915_gem_ww_ctx *ww,
+ u64 size, u64 alignment, u64 flags)
{
struct i915_vma_work *work = NULL;
intel_wakeref_t wakeref = 0;
unsigned int bound;
int err;
+#ifdef CONFIG_PROVE_LOCKING
+ if (debug_locks && lockdep_is_held(&vma->vm->i915->drm.struct_mutex))
+ WARN_ON(!ww);
+#endif
+
BUILD_BUG_ON(PIN_GLOBAL != I915_VMA_GLOBAL_BIND);
BUILD_BUG_ON(PIN_USER != I915_VMA_LOCAL_BIND);
@@ -989,7 +995,8 @@ static void flush_idle_contexts(struct intel_gt *gt)
intel_gt_wait_for_idle(gt, MAX_SCHEDULE_TIMEOUT);
}
-int i915_ggtt_pin(struct i915_vma *vma, u32 align, unsigned int flags)
+int i915_ggtt_pin(struct i915_vma *vma, struct i915_gem_ww_ctx *ww,
+ u32 align, unsigned int flags)
{
struct i915_address_space *vm = vma->vm;
int err;
@@ -997,7 +1004,7 @@ int i915_ggtt_pin(struct i915_vma *vma, u32 align, unsigned int flags)
GEM_BUG_ON(!i915_vma_is_ggtt(vma));
do {
- err = i915_vma_pin(vma, 0, align, flags | PIN_GLOBAL);
+ err = i915_vma_pin_ww(vma, ww, 0, align, flags | PIN_GLOBAL);
if (err != -ENOSPC) {
if (!err) {
err = i915_vma_wait_for_bind(vma);
diff --git a/drivers/gpu/drm/i915/i915_vma.h b/drivers/gpu/drm/i915/i915_vma.h
index d0d01f909548..5b3a3c653454 100644
--- a/drivers/gpu/drm/i915/i915_vma.h
+++ b/drivers/gpu/drm/i915/i915_vma.h
@@ -237,8 +237,17 @@ static inline void i915_vma_unlock(struct i915_vma *vma)
}
int __must_check
-i915_vma_pin(struct i915_vma *vma, u64 size, u64 alignment, u64 flags);
-int i915_ggtt_pin(struct i915_vma *vma, u32 align, unsigned int flags);
+i915_vma_pin_ww(struct i915_vma *vma, struct i915_gem_ww_ctx *ww,
+ u64 size, u64 alignment, u64 flags);
+
+static inline int __must_check
+i915_vma_pin(struct i915_vma *vma, u64 size, u64 alignment, u64 flags)
+{
+ return i915_vma_pin_ww(vma, NULL, size, alignment, flags);
+}
+
+int i915_ggtt_pin(struct i915_vma *vma, struct i915_gem_ww_ctx *ww,
+ u32 align, unsigned int flags);
static inline int i915_vma_pin_count(const struct i915_vma *vma)
{
--
2.27.0
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