Am 31.01.25 um 17:23 schrieb Sathishkumar S:
Add ring reset function callback for JPEG4_0_3 to
recover from job timeouts without a full gpu reset.

Signed-off-by: Sathishkumar S <sathishkumar.sundarar...@amd.com>
---
  drivers/gpu/drm/amd/amdgpu/jpeg_v4_0_3.c | 60 ++++++++++++++++++++++--
  1 file changed, 57 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/jpeg_v4_0_3.c 
b/drivers/gpu/drm/amd/amdgpu/jpeg_v4_0_3.c
index be0b3b4c8690..62d8628dccc5 100644
--- a/drivers/gpu/drm/amd/amdgpu/jpeg_v4_0_3.c
+++ b/drivers/gpu/drm/amd/amdgpu/jpeg_v4_0_3.c
@@ -204,9 +204,7 @@ static int jpeg_v4_0_3_sw_init(struct amdgpu_ip_block 
*ip_block)
        if (r)
                return r;
- /* TODO: Add queue reset mask when FW fully supports it */
-       adev->jpeg.supported_reset =
-               
amdgpu_get_soft_full_reset_mask(&adev->jpeg.inst[0].ring_dec[0]);
+       adev->jpeg.supported_reset = AMDGPU_RESET_TYPE_PER_PIPE;
        r = amdgpu_jpeg_sysfs_reset_mask_init(adev);
        if (r)
                return r;
@@ -231,6 +229,7 @@ static int jpeg_v4_0_3_sw_fini(struct amdgpu_ip_block 
*ip_block)
                return r;
amdgpu_jpeg_sysfs_reset_mask_fini(adev);
+
        r = amdgpu_jpeg_sw_fini(adev);
return r;
@@ -1099,6 +1098,60 @@ static int jpeg_v4_0_3_process_interrupt(struct 
amdgpu_device *adev,
        return 0;
  }
+static int jpeg_v4_0_3_wait_for_idle_on_inst(struct amdgpu_ring *ring)
+{
+       struct amdgpu_device *adev = ring->adev;
+       struct amdgpu_ring *r;
+       int ret, j;
+
+       for (j = 0; j < adev->jpeg.num_jpeg_rings; ++j) {
+               r = &adev->jpeg.inst[ring->me].ring_dec[j];
+               r->sched.ready = false;
+       }
+       /* publish update */
+       smp_rmb();

Using smp_rmb() to publish the update is 100% incorrect.

What exactly are you trying to do?

Regards,
Christian.


+       for (j = 0; j < adev->jpeg.num_jpeg_rings; ++j) {
+               r = &adev->jpeg.inst[ring->me].ring_dec[j];
+               if (r->pipe == j)
+                       continue;
+               ret = SOC15_WAIT_ON_RREG_OFFSET(JPEG, GET_INST(JPEG, ring->me),
+                                               regUVD_JRBC0_UVD_JRBC_STATUS,
+                                               jpeg_v4_0_3_core_reg_offset(j),
+                                               
UVD_JRBC0_UVD_JRBC_STATUS__RB_JOB_DONE_MASK,
+                                               
UVD_JRBC0_UVD_JRBC_STATUS__RB_JOB_DONE_MASK);
+               if (ret)
+                       return ret;
+       }
+
+       return 0;
+}
+
+static int jpeg_v4_0_3_ring_reset(struct amdgpu_ring *ring, unsigned int vmid)
+{
+       struct amdgpu_device *adev = ring->adev;
+       struct amdgpu_ring *r;
+       int ret, j;
+
+       if (amdgpu_sriov_vf(adev))
+               return -EINVAL;
+
+       jpeg_v4_0_3_wait_for_idle_on_inst(ring);
+       jpeg_v4_0_3_stop_inst(ring->adev, ring->me);
+       jpeg_v4_0_3_start_inst(ring->adev, ring->me);
+       for (j = 0; j < adev->jpeg.num_jpeg_rings; ++j) {
+               r = &adev->jpeg.inst[ring->me].ring_dec[j];
+               jpeg_v4_0_3_start_jrbc(r);
+               ret = amdgpu_ring_test_helper(r);
+               if (ret)
+                       return ret;
+               r->sched.ready = true;
+       }
+       /* publish update */
+       smp_rmb();
+       dev_info(adev->dev, "Reset on %s succeeded\n", ring->sched.name);
+       return 0;
+}
+
  static const struct amd_ip_funcs jpeg_v4_0_3_ip_funcs = {
        .name = "jpeg_v4_0_3",
        .early_init = jpeg_v4_0_3_early_init,
@@ -1145,6 +1198,7 @@ static const struct amdgpu_ring_funcs 
jpeg_v4_0_3_dec_ring_vm_funcs = {
        .emit_wreg = jpeg_v4_0_3_dec_ring_emit_wreg,
        .emit_reg_wait = jpeg_v4_0_3_dec_ring_emit_reg_wait,
        .emit_reg_write_reg_wait = amdgpu_ring_emit_reg_write_reg_wait_helper,
+       .reset = jpeg_v4_0_3_ring_reset,
  };
static void jpeg_v4_0_3_set_dec_ring_funcs(struct amdgpu_device *adev)

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