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drm/msm: Add support for private address space instances

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Add support for allocating private address space instances. Targets that
support per-context pagetables should implement their own function to
allocate private address spaces.

The default will return a pointer to the global address space.

Signed-off-by: Jordan Crouse <jcrouse@codeaurora.org>
Signed-off-by: Rob Clark <robdclark@chromium.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
This commit is contained in:
Jordan Crouse
2020-08-17 15:01:40 -07:00
committed by Rob Clark
parent b145c6e65e
commit 933415e24b
5 changed files with 48 additions and 6 deletions
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22
drivers/gpu/drm/msm/msm_gpu.c
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@@ -827,6 +827,28 @@ static int get_clocks(struct platform_device *pdev, struct msm_gpu *gpu)
return 0;
}
/* Return a new address space for a msm_drm_private instance */
struct msm_gem_address_space *
msm_gpu_create_private_address_space(struct msm_gpu *gpu)
{
struct msm_gem_address_space *aspace = NULL;
if (!gpu)
return NULL;
/*
* If the target doesn't support private address spaces then return
* the global one
*/
if (gpu->funcs->create_private_address_space)
aspace = gpu->funcs->create_private_address_space(gpu);
if (IS_ERR_OR_NULL(aspace))
aspace = msm_gem_address_space_get(gpu->aspace);
return aspace;
}
int msm_gpu_init(struct drm_device *drm, struct platform_device *pdev,
struct msm_gpu *gpu, const struct msm_gpu_funcs *funcs,
const char *name, struct msm_gpu_config *config)