Wait for the oldest sequence on the ring
to be signaled in order to make sure there
will be no command overrun.
v2: fix coding stype and remove abs operation
Signed-off-by: Yintian Tao <yttao@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c | 10 +++++++++-
drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c | 22 ++++++++++++++++++----
drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h | 3 ++-
drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c | 8 +++++++-
drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c | 1 -
drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c | 1 -
drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c | 14 +++++++++++---
drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c | 8 +++++++-
drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c | 8 +++++++-
9 files changed, 61 insertions(+), 14 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
index 7531527067df..397bd5fa77cb 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_fence.c
@@ -192,14 +192,22 @@ int amdgpu_fence_emit(struct amdgpu_ring *ring, struct dma_fence **f,
* Used For polling fence.
* Returns 0 on success, -ENOMEM on failure.
*/
-int amdgpu_fence_emit_polling(struct amdgpu_ring *ring, uint32_t *s)
+int amdgpu_fence_emit_polling(struct amdgpu_ring *ring, uint32_t *s,
+ uint32_t timeout)
{
uint32_t seq;
+ signed long r = 0;
if (!s)
return -EINVAL;
seq = ++ring->fence_drv.sync_seq;
+ r = amdgpu_fence_wait_polling(ring,
+ seq - ring->fence_drv.num_fences_mask,
+ timeout);
+ if (r < 1)
+ return -ETIMEDOUT;
+
amdgpu_ring_emit_fence(ring, ring->fence_drv.gpu_addr,
seq, 0);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
index a721b0e0ff69..0103acc57474 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c
@@ -675,13 +675,15 @@ uint32_t amdgpu_kiq_rreg(struct amdgpu_device *adev, uint32_t reg)
spin_lock_irqsave(&kiq->ring_lock, flags);
if (amdgpu_device_wb_get(adev, ®_val_offs)) {
- spin_unlock_irqrestore(&kiq->ring_lock, flags);
pr_err("critical bug! too many kiq readers\n");
- goto failed_kiq_read;
+ goto failed_unlock;
}
amdgpu_ring_alloc(ring, 32);
amdgpu_ring_emit_rreg(ring, reg, reg_val_offs);
- amdgpu_fence_emit_polling(ring, &seq);
+ r = amdgpu_fence_emit_polling(ring, &seq, MAX_KIQ_REG_WAIT);
+ if (r)
+ goto failed_undo;
+
amdgpu_ring_commit(ring);
spin_unlock_irqrestore(&kiq->ring_lock, flags);
@@ -712,7 +714,13 @@ uint32_t amdgpu_kiq_rreg(struct amdgpu_device *adev, uint32_t reg)
amdgpu_device_wb_free(adev, reg_val_offs);
return value;
+failed_undo:
+ amdgpu_ring_undo(ring);
+failed_unlock:
+ spin_unlock_irqrestore(&kiq->ring_lock, flags);
failed_kiq_read:
+ if (reg_val_offs)
+ amdgpu_device_wb_free(adev, reg_val_offs);
pr_err("failed to read reg:%x\n", reg);
return ~0;
}
@@ -730,7 +738,10 @@ void amdgpu_kiq_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v)
spin_lock_irqsave(&kiq->ring_lock, flags);
amdgpu_ring_alloc(ring, 32);
amdgpu_ring_emit_wreg(ring, reg, v);
- amdgpu_fence_emit_polling(ring, &seq);
+ r = amdgpu_fence_emit_polling(ring, &seq, MAX_KIQ_REG_WAIT);
+ if (r)
+ goto failed_undo;
+
amdgpu_ring_commit(ring);
spin_unlock_irqrestore(&kiq->ring_lock, flags);
@@ -759,6 +770,9 @@ void amdgpu_kiq_wreg(struct amdgpu_device *adev, uint32_t reg, uint32_t v)
return;
+failed_undo:
+ amdgpu_ring_undo(ring);
+ spin_unlock_irqrestore(&kiq->ring_lock, flags);
failed_kiq_write:
pr_err("failed to write reg:%x\n", reg);
}
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
index 137d3d2b46e8..be218754629a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ring.h
@@ -118,7 +118,8 @@ void amdgpu_fence_driver_suspend(struct amdgpu_device *adev);
void amdgpu_fence_driver_resume(struct amdgpu_device *adev);
int amdgpu_fence_emit(struct amdgpu_ring *ring, struct dma_fence **fence,
unsigned flags);
-int amdgpu_fence_emit_polling(struct amdgpu_ring *ring, uint32_t *s);
+int amdgpu_fence_emit_polling(struct amdgpu_ring *ring, uint32_t *s,
+ uint32_t timeout);
bool amdgpu_fence_process(struct amdgpu_ring *ring);
int amdgpu_fence_wait_empty(struct amdgpu_ring *ring);
signed long amdgpu_fence_wait_polling(struct amdgpu_ring *ring,
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
index 8c10084f44ef..cbbb8d02535a 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
@@ -60,7 +60,10 @@ void amdgpu_virt_kiq_reg_write_reg_wait(struct amdgpu_device *adev,
amdgpu_ring_alloc(ring, 32);
amdgpu_ring_emit_reg_write_reg_wait(ring, reg0, reg1,
ref, mask);
- amdgpu_fence_emit_polling(ring, &seq);
+ r = amdgpu_fence_emit_polling(ring, &seq, MAX_KIQ_REG_WAIT);
+ if (r)
+ goto failed_undo;
+
amdgpu_ring_commit(ring);
spin_unlock_irqrestore(&kiq->ring_lock, flags);
@@ -82,6 +85,9 @@ void amdgpu_virt_kiq_reg_write_reg_wait(struct amdgpu_device *adev,
return;
+failed_undo:
+ amdgpu_ring_undo(ring);
+ spin_unlock_irqrestore(&kiq->ring_lock, flags);
failed_kiq:
pr_err("failed to write reg %x wait reg %x\n", reg0, reg1);
}
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
index 8a579ce8757d..2b6d7687f4cb 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c
@@ -7605,7 +7605,6 @@ static void gfx_v10_0_ring_emit_rreg(struct amdgpu_ring *ring, uint32_t reg,
uint32_t reg_val_offs)
{
struct amdgpu_device *adev = ring->adev;
- struct amdgpu_kiq *kiq = &adev->gfx.kiq;
amdgpu_ring_write(ring, PACKET3(PACKET3_COPY_DATA, 4));
amdgpu_ring_write(ring, 0 | /* src: register*/
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
index 6c56cedce4c3..6ae78b9e9551 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v8_0.c
@@ -6393,7 +6393,6 @@ static void gfx_v8_0_ring_emit_rreg(struct amdgpu_ring *ring, uint32_t reg,
uint32_t reg_val_offs)
{
struct amdgpu_device *adev = ring->adev;
- struct amdgpu_kiq *kiq = &adev->gfx.kiq;
amdgpu_ring_write(ring, PACKET3(PACKET3_COPY_DATA, 4));
amdgpu_ring_write(ring, 0 | /* src: register*/
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
index 09aa5f509bd2..be05ab221b16 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
@@ -4054,9 +4054,8 @@ static uint64_t gfx_v9_0_kiq_read_clock(struct amdgpu_device *adev)
spin_lock_irqsave(&kiq->ring_lock, flags);
if (amdgpu_device_wb_get(adev, ®_val_offs)) {
- spin_unlock_irqrestore(&kiq->ring_lock, flags);
pr_err("critical bug! too many kiq readers\n");
- goto failed_kiq_read;
+ goto failed_unlock;
}
amdgpu_ring_alloc(ring, 32);
amdgpu_ring_write(ring, PACKET3(PACKET3_COPY_DATA, 4));
@@ -4070,7 +4069,10 @@ static uint64_t gfx_v9_0_kiq_read_clock(struct amdgpu_device *adev)
reg_val_offs * 4));
amdgpu_ring_write(ring, upper_32_bits(adev->wb.gpu_addr +
reg_val_offs * 4));
- amdgpu_fence_emit_polling(ring, &seq);
+ r = amdgpu_fence_emit_polling(ring, &seq, MAX_KIQ_REG_WAIT);
+ if (r)
+ goto failed_undo;
+
amdgpu_ring_commit(ring);
spin_unlock_irqrestore(&kiq->ring_lock, flags);
@@ -4102,7 +4104,13 @@ static uint64_t gfx_v9_0_kiq_read_clock(struct amdgpu_device *adev)
amdgpu_device_wb_free(adev, reg_val_offs);
return value;
+failed_undo:
+ amdgpu_ring_undo(ring);
+failed_unlock:
+ spin_unlock_irqrestore(&kiq->ring_lock, flags);
failed_kiq_read:
+ if (reg_val_offs)
+ amdgpu_device_wb_free(adev, reg_val_offs);
pr_err("failed to read gpu clock\n");
return ~0;
}
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
index 30b75d79efdb..b120f9160f13 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v10_0.c
@@ -427,7 +427,13 @@ static int gmc_v10_0_flush_gpu_tlb_pasid(struct amdgpu_device *adev,
amdgpu_ring_alloc(ring, kiq->pmf->invalidate_tlbs_size + 8);
kiq->pmf->kiq_invalidate_tlbs(ring,
pasid, flush_type, all_hub);
- amdgpu_fence_emit_polling(ring, &seq);
+ r = amdgpu_fence_emit_polling(ring, &seq, MAX_KIQ_REG_WAIT);
+ if (r) {
+ amdgpu_ring_undo(ring);
+ spin_unlock(&kiq->ring_lock);
+ return -ETIME;
+ }
+
amdgpu_ring_commit(ring);
spin_unlock(&adev->gfx.kiq.ring_lock);
r = amdgpu_fence_wait_polling(ring, seq, adev->usec_timeout);
diff --git a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
index fecdbc471983..0a6026308343 100644
--- a/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gmc_v9_0.c
@@ -621,7 +621,13 @@ static int gmc_v9_0_flush_gpu_tlb_pasid(struct amdgpu_device *adev,
pasid, 2, all_hub);
kiq->pmf->kiq_invalidate_tlbs(ring,
pasid, flush_type, all_hub);
- amdgpu_fence_emit_polling(ring, &seq);
+ r = amdgpu_fence_emit_polling(ring, &seq, MAX_KIQ_REG_WAIT);
+ if (r) {
+ amdgpu_ring_undo(ring);
+ spin_unlock(&kiq->ring_lock);
+ return -ETIME;
+ }
+
amdgpu_ring_commit(ring);
spin_unlock(&adev->gfx.kiq.ring_lock);
r = amdgpu_fence_wait_polling(ring, seq, adev->usec_timeout);
--
2.17.1
_______________________________________________
amd-gfx mailing list
amd-gfx@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/amd-gfx
