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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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13
drivers/gpu/drm/msm/msm_drv.c
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@@ -589,7 +589,7 @@ static int context_init(struct drm_device *dev, struct drm_file *file)
kref_init(&ctx->ref);
msm_submitqueue_init(dev, ctx);
ctx->aspace = priv->gpu ? priv->gpu->aspace : NULL;
ctx->aspace = msm_gpu_create_private_address_space(priv->gpu);
file->driver_priv = ctx;
return 0;
@@ -772,18 +772,19 @@ static int msm_ioctl_gem_cpu_fini(struct drm_device *dev, void *data,
}
static int msm_ioctl_gem_info_iova(struct drm_device *dev,
struct drm_gem_object *obj, uint64_t *iova)
struct drm_file *file, struct drm_gem_object *obj,
uint64_t *iova)
{
struct msm_drm_private *priv = dev->dev_private;
struct msm_file_private *ctx = file->driver_priv;
if (!priv->gpu)
if (!ctx->aspace)
return -EINVAL;
/*
* Don't pin the memory here - just get an address so that userspace can
* be productive
*/
return msm_gem_get_iova(obj, priv->gpu->aspace, iova);
return msm_gem_get_iova(obj, ctx->aspace, iova);
}
static int msm_ioctl_gem_info(struct drm_device *dev, void *data,
@@ -822,7 +823,7 @@ static int msm_ioctl_gem_info(struct drm_device *dev, void *data,
args->value = msm_gem_mmap_offset(obj);
break;
case MSM_INFO_GET_IOVA:
ret = msm_ioctl_gem_info_iova(dev, obj, &args->value);
ret = msm_ioctl_gem_info_iova(dev, file, obj, &args->value);
break;
case MSM_INFO_SET_NAME:
/* length check should leave room for terminating null: */