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drm/amdgpu: add and implement the GPU reset status query
Signed-off-by: Marek Olšák <marek.olsak@amd.com> Reviewed-by: Christian König <christian.koenig@amd.com> Reviewed-by: Jammy Zhou <Jammy.Zhou@amd.com>
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@ -1040,7 +1040,7 @@ struct amdgpu_vm_manager {
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struct amdgpu_ctx_state {
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uint64_t flags;
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uint64_t hangs;
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uint32_t hangs;
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};
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struct amdgpu_ctx {
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@ -1049,6 +1049,7 @@ struct amdgpu_ctx {
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struct amdgpu_fpriv *fpriv;
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struct amdgpu_ctx_state state;
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uint32_t id;
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unsigned reset_counter;
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};
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struct amdgpu_ctx_mgr {
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@ -1897,8 +1898,6 @@ int amdgpu_ctx_alloc(struct amdgpu_device *adev,struct amdgpu_fpriv *fpriv,
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uint32_t *id,uint32_t flags);
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int amdgpu_ctx_free(struct amdgpu_device *adev, struct amdgpu_fpriv *fpriv,
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uint32_t id);
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int amdgpu_ctx_query(struct amdgpu_device *adev, struct amdgpu_fpriv *fpriv,
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uint32_t id,struct amdgpu_ctx_state *state);
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void amdgpu_ctx_fini(struct amdgpu_fpriv *fpriv);
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struct amdgpu_ctx *amdgpu_ctx_get(struct amdgpu_fpriv *fpriv, uint32_t id);
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@ -2006,6 +2005,7 @@ struct amdgpu_device {
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atomic64_t vram_vis_usage;
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atomic64_t gtt_usage;
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atomic64_t num_bytes_moved;
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atomic_t gpu_reset_counter;
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/* display */
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struct amdgpu_mode_info mode_info;
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@ -81,21 +81,36 @@ int amdgpu_ctx_free(struct amdgpu_device *adev, struct amdgpu_fpriv *fpriv, uint
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return -EINVAL;
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}
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int amdgpu_ctx_query(struct amdgpu_device *adev, struct amdgpu_fpriv *fpriv, uint32_t id, struct amdgpu_ctx_state *state)
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static int amdgpu_ctx_query(struct amdgpu_device *adev,
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struct amdgpu_fpriv *fpriv, uint32_t id,
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union drm_amdgpu_ctx_out *out)
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{
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struct amdgpu_ctx *ctx;
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struct amdgpu_ctx_mgr *mgr = &fpriv->ctx_mgr;
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unsigned reset_counter;
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mutex_lock(&mgr->lock);
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ctx = idr_find(&mgr->ctx_handles, id);
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if (ctx) {
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/* state should alter with CS activity */
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*state = ctx->state;
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if (!ctx) {
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mutex_unlock(&mgr->lock);
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return 0;
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return -EINVAL;
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}
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/* TODO: these two are always zero */
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out->state.flags = ctx->state.flags;
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out->state.hangs = ctx->state.hangs;
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/* determine if a GPU reset has occured since the last call */
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reset_counter = atomic_read(&adev->gpu_reset_counter);
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/* TODO: this should ideally return NO, GUILTY, or INNOCENT. */
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if (ctx->reset_counter == reset_counter)
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out->state.reset_status = AMDGPU_CTX_NO_RESET;
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else
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out->state.reset_status = AMDGPU_CTX_UNKNOWN_RESET;
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ctx->reset_counter = reset_counter;
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mutex_unlock(&mgr->lock);
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return -EINVAL;
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return 0;
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}
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void amdgpu_ctx_fini(struct amdgpu_fpriv *fpriv)
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@ -115,12 +130,11 @@ void amdgpu_ctx_fini(struct amdgpu_fpriv *fpriv)
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}
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int amdgpu_ctx_ioctl(struct drm_device *dev, void *data,
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struct drm_file *filp)
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struct drm_file *filp)
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{
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int r;
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uint32_t id;
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uint32_t flags;
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struct amdgpu_ctx_state state;
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union drm_amdgpu_ctx *args = data;
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struct amdgpu_device *adev = dev->dev_private;
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@ -139,11 +153,7 @@ int amdgpu_ctx_ioctl(struct drm_device *dev, void *data,
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r = amdgpu_ctx_free(adev, fpriv, id);
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break;
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case AMDGPU_CTX_OP_QUERY_STATE:
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r = amdgpu_ctx_query(adev, fpriv, id, &state);
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if (r == 0) {
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args->out.state.flags = state.flags;
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args->out.state.hangs = state.hangs;
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}
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r = amdgpu_ctx_query(adev, fpriv, id, &args->out);
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break;
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default:
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return -EINVAL;
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@ -1781,6 +1781,7 @@ int amdgpu_gpu_reset(struct amdgpu_device *adev)
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}
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adev->needs_reset = false;
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atomic_inc(&adev->gpu_reset_counter);
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/* block TTM */
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resched = ttm_bo_lock_delayed_workqueue(&adev->mman.bdev);
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@ -149,6 +149,12 @@ union drm_amdgpu_bo_list {
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#define AMDGPU_CTX_OP_STATE_RUNNING 1
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/* GPU reset status */
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#define AMDGPU_CTX_NO_RESET 0
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#define AMDGPU_CTX_GUILTY_RESET 1 /* this the context caused it */
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#define AMDGPU_CTX_INNOCENT_RESET 2 /* some other context caused it */
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#define AMDGPU_CTX_UNKNOWN_RESET 3 /* unknown cause */
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struct drm_amdgpu_ctx_in {
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uint32_t op;
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uint32_t flags;
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@ -164,7 +170,10 @@ union drm_amdgpu_ctx_out {
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struct {
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uint64_t flags;
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uint64_t hangs;
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/** Number of resets caused by this context so far. */
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uint32_t hangs;
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/** Reset status since the last call of the ioctl. */
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uint32_t reset_status;
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} state;
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};
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