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drm/amdgpu: add ctx_id to the WAIT_CS IOCTL (v4)

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It is required to support fence per context.

v2: add amdgpu_ctx_get/put
v3: improve get/put
v4: squash hlock fix

Signed-off-by: Jammy Zhou <Jammy.Zhou@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
This commit is contained in:
Jammy Zhou
2015-05-08 17:29:40 +08:00
committed by Alex Deucher
parent 74a5d1656e
commit 66b3cf2ab3
4 changed files with 39 additions and 1 deletions
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30
drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
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@@ -151,3 +151,33 @@ int amdgpu_ctx_ioctl(struct drm_device *dev, void *data,
return r;
}
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;
mutex_lock(&mgr->lock);
ctx = idr_find(&mgr->ctx_handles, id);
if (ctx)
kref_get(&ctx->refcount);
mutex_unlock(&mgr->lock);
return ctx;
}
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;
}