From 8d91c1e411f55d7ea91b1183a2e9f8088fb4d5be Mon Sep 17 00:00:00 2001 From: André Fabian Silva Delgado Date: Tue, 15 Dec 2015 14:52:16 -0300 Subject: Linux-libre 4.3.2-gnu --- drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c | 213 ++++++++++++++++++++++++-------- 1 file changed, 163 insertions(+), 50 deletions(-) (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c') diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c index 6c66ac8a1..e0b80ccdf 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c @@ -25,54 +25,107 @@ #include #include "amdgpu.h" -static void amdgpu_ctx_do_release(struct kref *ref) +int amdgpu_ctx_init(struct amdgpu_device *adev, bool kernel, + struct amdgpu_ctx *ctx) { - struct amdgpu_ctx *ctx; - struct amdgpu_ctx_mgr *mgr; + unsigned i, j; + int r; - ctx = container_of(ref, struct amdgpu_ctx, refcount); - mgr = &ctx->fpriv->ctx_mgr; + memset(ctx, 0, sizeof(*ctx)); + ctx->adev = adev; + kref_init(&ctx->refcount); + spin_lock_init(&ctx->ring_lock); + for (i = 0; i < AMDGPU_MAX_RINGS; ++i) + ctx->rings[i].sequence = 1; - idr_remove(&mgr->ctx_handles, ctx->id); - kfree(ctx); + if (amdgpu_enable_scheduler) { + /* create context entity for each ring */ + for (i = 0; i < adev->num_rings; i++) { + struct amd_sched_rq *rq; + if (kernel) + rq = &adev->rings[i]->sched.kernel_rq; + else + rq = &adev->rings[i]->sched.sched_rq; + r = amd_sched_entity_init(&adev->rings[i]->sched, + &ctx->rings[i].entity, + rq, amdgpu_sched_jobs); + if (r) + break; + } + + if (i < adev->num_rings) { + for (j = 0; j < i; j++) + amd_sched_entity_fini(&adev->rings[j]->sched, + &ctx->rings[j].entity); + kfree(ctx); + return r; + } + } + return 0; } -int amdgpu_ctx_alloc(struct amdgpu_device *adev, struct amdgpu_fpriv *fpriv, uint32_t *id, uint32_t flags) +void amdgpu_ctx_fini(struct amdgpu_ctx *ctx) +{ + struct amdgpu_device *adev = ctx->adev; + unsigned i, j; + + for (i = 0; i < AMDGPU_MAX_RINGS; ++i) + for (j = 0; j < AMDGPU_CTX_MAX_CS_PENDING; ++j) + fence_put(ctx->rings[i].fences[j]); + + if (amdgpu_enable_scheduler) { + for (i = 0; i < adev->num_rings; i++) + amd_sched_entity_fini(&adev->rings[i]->sched, + &ctx->rings[i].entity); + } +} + +static int amdgpu_ctx_alloc(struct amdgpu_device *adev, + struct amdgpu_fpriv *fpriv, + uint32_t *id) { - int r; - struct amdgpu_ctx *ctx; struct amdgpu_ctx_mgr *mgr = &fpriv->ctx_mgr; + struct amdgpu_ctx *ctx; + int r; ctx = kmalloc(sizeof(*ctx), GFP_KERNEL); if (!ctx) return -ENOMEM; mutex_lock(&mgr->lock); - r = idr_alloc(&mgr->ctx_handles, ctx, 0, 0, GFP_KERNEL); + r = idr_alloc(&mgr->ctx_handles, ctx, 1, 0, GFP_KERNEL); if (r < 0) { mutex_unlock(&mgr->lock); kfree(ctx); return r; } *id = (uint32_t)r; - - memset(ctx, 0, sizeof(*ctx)); - ctx->id = *id; - ctx->fpriv = fpriv; - kref_init(&ctx->refcount); + r = amdgpu_ctx_init(adev, false, ctx); mutex_unlock(&mgr->lock); - return 0; + return r; } -int amdgpu_ctx_free(struct amdgpu_device *adev, struct amdgpu_fpriv *fpriv, uint32_t id) +static void amdgpu_ctx_do_release(struct kref *ref) { struct amdgpu_ctx *ctx; + + ctx = container_of(ref, struct amdgpu_ctx, refcount); + + amdgpu_ctx_fini(ctx); + + kfree(ctx); +} + +static int amdgpu_ctx_free(struct amdgpu_fpriv *fpriv, uint32_t id) +{ struct amdgpu_ctx_mgr *mgr = &fpriv->ctx_mgr; + struct amdgpu_ctx *ctx; mutex_lock(&mgr->lock); ctx = idr_find(&mgr->ctx_handles, id); if (ctx) { + idr_remove(&mgr->ctx_handles, id); kref_put(&ctx->refcount, amdgpu_ctx_do_release); mutex_unlock(&mgr->lock); return 0; @@ -86,9 +139,13 @@ static int amdgpu_ctx_query(struct amdgpu_device *adev, union drm_amdgpu_ctx_out *out) { struct amdgpu_ctx *ctx; - struct amdgpu_ctx_mgr *mgr = &fpriv->ctx_mgr; + struct amdgpu_ctx_mgr *mgr; unsigned reset_counter; + if (!fpriv) + return -EINVAL; + + mgr = &fpriv->ctx_mgr; mutex_lock(&mgr->lock); ctx = idr_find(&mgr->ctx_handles, id); if (!ctx) { @@ -97,8 +154,8 @@ static int amdgpu_ctx_query(struct amdgpu_device *adev, } /* TODO: these two are always zero */ - out->state.flags = ctx->state.flags; - out->state.hangs = ctx->state.hangs; + out->state.flags = 0x0; + out->state.hangs = 0x0; /* determine if a GPU reset has occured since the last call */ reset_counter = atomic_read(&adev->gpu_reset_counter); @@ -113,28 +170,11 @@ static int amdgpu_ctx_query(struct amdgpu_device *adev, return 0; } -void amdgpu_ctx_fini(struct amdgpu_fpriv *fpriv) -{ - struct idr *idp; - struct amdgpu_ctx *ctx; - uint32_t id; - struct amdgpu_ctx_mgr *mgr = &fpriv->ctx_mgr; - idp = &mgr->ctx_handles; - - idr_for_each_entry(idp,ctx,id) { - if (kref_put(&ctx->refcount, amdgpu_ctx_do_release) != 1) - DRM_ERROR("ctx (id=%ul) is still alive\n",ctx->id); - } - - mutex_destroy(&mgr->lock); -} - int amdgpu_ctx_ioctl(struct drm_device *dev, void *data, struct drm_file *filp) { int r; uint32_t id; - uint32_t flags; union drm_amdgpu_ctx *args = data; struct amdgpu_device *adev = dev->dev_private; @@ -142,15 +182,14 @@ int amdgpu_ctx_ioctl(struct drm_device *dev, void *data, r = 0; id = args->in.ctx_id; - flags = args->in.flags; switch (args->in.op) { case AMDGPU_CTX_OP_ALLOC_CTX: - r = amdgpu_ctx_alloc(adev, fpriv, &id, flags); + r = amdgpu_ctx_alloc(adev, fpriv, &id); args->out.alloc.ctx_id = id; break; case AMDGPU_CTX_OP_FREE_CTX: - r = amdgpu_ctx_free(adev, fpriv, id); + r = amdgpu_ctx_free(fpriv, id); break; case AMDGPU_CTX_OP_QUERY_STATE: r = amdgpu_ctx_query(adev, fpriv, id, &args->out); @@ -165,7 +204,12 @@ int amdgpu_ctx_ioctl(struct drm_device *dev, void *data, struct amdgpu_ctx *amdgpu_ctx_get(struct amdgpu_fpriv *fpriv, uint32_t id) { struct amdgpu_ctx *ctx; - struct amdgpu_ctx_mgr *mgr = &fpriv->ctx_mgr; + struct amdgpu_ctx_mgr *mgr; + + if (!fpriv) + return NULL; + + mgr = &fpriv->ctx_mgr; mutex_lock(&mgr->lock); ctx = idr_find(&mgr->ctx_handles, id); @@ -177,17 +221,86 @@ struct amdgpu_ctx *amdgpu_ctx_get(struct amdgpu_fpriv *fpriv, uint32_t id) int amdgpu_ctx_put(struct amdgpu_ctx *ctx) { - struct amdgpu_fpriv *fpriv; - struct amdgpu_ctx_mgr *mgr; - if (ctx == NULL) return -EINVAL; - fpriv = ctx->fpriv; - mgr = &fpriv->ctx_mgr; - mutex_lock(&mgr->lock); kref_put(&ctx->refcount, amdgpu_ctx_do_release); - mutex_unlock(&mgr->lock); - return 0; } + +uint64_t amdgpu_ctx_add_fence(struct amdgpu_ctx *ctx, struct amdgpu_ring *ring, + struct fence *fence) +{ + struct amdgpu_ctx_ring *cring = & ctx->rings[ring->idx]; + uint64_t seq = cring->sequence; + unsigned idx = 0; + struct fence *other = NULL; + + idx = seq % AMDGPU_CTX_MAX_CS_PENDING; + other = cring->fences[idx]; + if (other) { + signed long r; + r = fence_wait_timeout(other, false, MAX_SCHEDULE_TIMEOUT); + if (r < 0) + DRM_ERROR("Error (%ld) waiting for fence!\n", r); + } + + fence_get(fence); + + spin_lock(&ctx->ring_lock); + cring->fences[idx] = fence; + cring->sequence++; + spin_unlock(&ctx->ring_lock); + + fence_put(other); + + return seq; +} + +struct fence *amdgpu_ctx_get_fence(struct amdgpu_ctx *ctx, + struct amdgpu_ring *ring, uint64_t seq) +{ + struct amdgpu_ctx_ring *cring = & ctx->rings[ring->idx]; + struct fence *fence; + + spin_lock(&ctx->ring_lock); + + if (seq >= cring->sequence) { + spin_unlock(&ctx->ring_lock); + return ERR_PTR(-EINVAL); + } + + + if (seq + AMDGPU_CTX_MAX_CS_PENDING < cring->sequence) { + spin_unlock(&ctx->ring_lock); + return NULL; + } + + fence = fence_get(cring->fences[seq % AMDGPU_CTX_MAX_CS_PENDING]); + spin_unlock(&ctx->ring_lock); + + return fence; +} + +void amdgpu_ctx_mgr_init(struct amdgpu_ctx_mgr *mgr) +{ + mutex_init(&mgr->lock); + idr_init(&mgr->ctx_handles); +} + +void amdgpu_ctx_mgr_fini(struct amdgpu_ctx_mgr *mgr) +{ + struct amdgpu_ctx *ctx; + struct idr *idp; + uint32_t id; + + idp = &mgr->ctx_handles; + + idr_for_each_entry(idp, ctx, id) { + if (kref_put(&ctx->refcount, amdgpu_ctx_do_release) != 1) + DRM_ERROR("ctx %p is still alive\n", ctx); + } + + idr_destroy(&mgr->ctx_handles); + mutex_destroy(&mgr->lock); +} -- cgit v1.2.3-54-g00ecf