| Message ID | 20200803193547.305660-11-jcrouse@codeaurora.org (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | iommu/arm-smmu: Add Adreno SMMU specific implementation | expand |
On Mon, Aug 3, 2020 at 12:36 PM Jordan Crouse <jcrouse@codeaurora.org> wrote: > > 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> > --- > > drivers/gpu/drm/msm/msm_drv.c | 13 +++++++------ > drivers/gpu/drm/msm/msm_drv.h | 5 +++++ > drivers/gpu/drm/msm/msm_gem_vma.c | 9 +++++++++ > drivers/gpu/drm/msm/msm_gpu.c | 17 +++++++++++++++++ > drivers/gpu/drm/msm/msm_gpu.h | 5 +++++ > 5 files changed, 43 insertions(+), 6 deletions(-) > > diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c > index 108b663c3ef2..f072306f1260 100644 > --- a/drivers/gpu/drm/msm/msm_drv.c > +++ b/drivers/gpu/drm/msm/msm_drv.c > @@ -597,7 +597,7 @@ 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; > @@ -780,18 +780,19 @@ 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, > @@ -830,7 +831,7 @@ 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: */ > diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h > index f69c6d62584d..51a5c9083e13 100644 > --- a/drivers/gpu/drm/msm/msm_drv.h > +++ b/drivers/gpu/drm/msm/msm_drv.h > @@ -249,6 +249,10 @@ int msm_gem_map_vma(struct msm_gem_address_space *aspace, > void msm_gem_close_vma(struct msm_gem_address_space *aspace, > struct msm_gem_vma *vma); > > + > +struct msm_gem_address_space * > +msm_gem_address_space_get(struct msm_gem_address_space *aspace); > + > void msm_gem_address_space_put(struct msm_gem_address_space *aspace); > > struct msm_gem_address_space * > @@ -434,6 +438,7 @@ static inline void msm_file_private_destroy(struct kref *kref) > struct msm_file_private *ctx = container_of(kref, > struct msm_file_private, ref); > > + msm_gem_address_space_put(ctx->aspace); > kfree(ctx); > } > > diff --git a/drivers/gpu/drm/msm/msm_gem_vma.c b/drivers/gpu/drm/msm/msm_gem_vma.c > index 5f6a11211b64..29cc1305cf37 100644 > --- a/drivers/gpu/drm/msm/msm_gem_vma.c > +++ b/drivers/gpu/drm/msm/msm_gem_vma.c > @@ -27,6 +27,15 @@ void msm_gem_address_space_put(struct msm_gem_address_space *aspace) > kref_put(&aspace->kref, msm_gem_address_space_destroy); > } > > +struct msm_gem_address_space * > +msm_gem_address_space_get(struct msm_gem_address_space *aspace) > +{ > + if (!IS_ERR_OR_NULL(aspace)) > + kref_get(&aspace->kref); > + > + return aspace; > +} > + > /* Actually unmap memory for the vma */ > void msm_gem_purge_vma(struct msm_gem_address_space *aspace, > struct msm_gem_vma *vma) > diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c > index a1f3da6550e5..aabbd7908ee5 100644 > --- a/drivers/gpu/drm/msm/msm_gpu.c > +++ b/drivers/gpu/drm/msm/msm_gpu.c > @@ -823,6 +823,23 @@ 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) > +{ > + 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) > + return msm_gem_address_space_get(gpu->aspace); > + > + return gpu->funcs->create_private_address_space(gpu); so if you flip the logic around here, you can get rid of the msm_gem_address_space_get() in per-gen backend and consolidate the error handling here, ie. struct msm_gem_address_space *aspace = NULL; if (gpu->funcs->create_private_address_space) aspace = gpu->funcs->create_private_address_space(...); if (IS_ERR_OR_NULL(aspace)) aspace = msm_gem_address_space_get(...); (and that also simplifies a bit the patch I have on top to show comm in debugfs) BR, -R > +} > + > 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) > diff --git a/drivers/gpu/drm/msm/msm_gpu.h b/drivers/gpu/drm/msm/msm_gpu.h > index d496d488222c..d298657b4730 100644 > --- a/drivers/gpu/drm/msm/msm_gpu.h > +++ b/drivers/gpu/drm/msm/msm_gpu.h > @@ -64,6 +64,8 @@ struct msm_gpu_funcs { > void (*gpu_set_freq)(struct msm_gpu *gpu, struct dev_pm_opp *opp); > struct msm_gem_address_space *(*create_address_space) > (struct msm_gpu *gpu, struct platform_device *pdev); > + struct msm_gem_address_space *(*create_private_address_space) > + (struct msm_gpu *gpu); > }; > > struct msm_gpu { > @@ -286,6 +288,9 @@ 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); > > +struct msm_gem_address_space * > +msm_gpu_create_private_address_space(struct msm_gpu *gpu); > + > void msm_gpu_cleanup(struct msm_gpu *gpu); > > struct msm_gpu *adreno_load_gpu(struct drm_device *dev); > -- > 2.25.1 > > _______________________________________________ > Freedreno mailing list > Freedreno@lists.freedesktop.org > https://lists.freedesktop.org/mailman/listinfo/freedreno
diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 108b663c3ef2..f072306f1260 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -597,7 +597,7 @@ 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; @@ -780,18 +780,19 @@ 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, @@ -830,7 +831,7 @@ 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: */ diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h index f69c6d62584d..51a5c9083e13 100644 --- a/drivers/gpu/drm/msm/msm_drv.h +++ b/drivers/gpu/drm/msm/msm_drv.h @@ -249,6 +249,10 @@ int msm_gem_map_vma(struct msm_gem_address_space *aspace, void msm_gem_close_vma(struct msm_gem_address_space *aspace, struct msm_gem_vma *vma); + +struct msm_gem_address_space * +msm_gem_address_space_get(struct msm_gem_address_space *aspace); + void msm_gem_address_space_put(struct msm_gem_address_space *aspace); struct msm_gem_address_space * @@ -434,6 +438,7 @@ static inline void msm_file_private_destroy(struct kref *kref) struct msm_file_private *ctx = container_of(kref, struct msm_file_private, ref); + msm_gem_address_space_put(ctx->aspace); kfree(ctx); } diff --git a/drivers/gpu/drm/msm/msm_gem_vma.c b/drivers/gpu/drm/msm/msm_gem_vma.c index 5f6a11211b64..29cc1305cf37 100644 --- a/drivers/gpu/drm/msm/msm_gem_vma.c +++ b/drivers/gpu/drm/msm/msm_gem_vma.c @@ -27,6 +27,15 @@ void msm_gem_address_space_put(struct msm_gem_address_space *aspace) kref_put(&aspace->kref, msm_gem_address_space_destroy); } +struct msm_gem_address_space * +msm_gem_address_space_get(struct msm_gem_address_space *aspace) +{ + if (!IS_ERR_OR_NULL(aspace)) + kref_get(&aspace->kref); + + return aspace; +} + /* Actually unmap memory for the vma */ void msm_gem_purge_vma(struct msm_gem_address_space *aspace, struct msm_gem_vma *vma) diff --git a/drivers/gpu/drm/msm/msm_gpu.c b/drivers/gpu/drm/msm/msm_gpu.c index a1f3da6550e5..aabbd7908ee5 100644 --- a/drivers/gpu/drm/msm/msm_gpu.c +++ b/drivers/gpu/drm/msm/msm_gpu.c @@ -823,6 +823,23 @@ 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) +{ + 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) + return msm_gem_address_space_get(gpu->aspace); + + return gpu->funcs->create_private_address_space(gpu); +} + 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) diff --git a/drivers/gpu/drm/msm/msm_gpu.h b/drivers/gpu/drm/msm/msm_gpu.h index d496d488222c..d298657b4730 100644 --- a/drivers/gpu/drm/msm/msm_gpu.h +++ b/drivers/gpu/drm/msm/msm_gpu.h @@ -64,6 +64,8 @@ struct msm_gpu_funcs { void (*gpu_set_freq)(struct msm_gpu *gpu, struct dev_pm_opp *opp); struct msm_gem_address_space *(*create_address_space) (struct msm_gpu *gpu, struct platform_device *pdev); + struct msm_gem_address_space *(*create_private_address_space) + (struct msm_gpu *gpu); }; struct msm_gpu { @@ -286,6 +288,9 @@ 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); +struct msm_gem_address_space * +msm_gpu_create_private_address_space(struct msm_gpu *gpu); + void msm_gpu_cleanup(struct msm_gpu *gpu); struct msm_gpu *adreno_load_gpu(struct drm_device *dev);
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> --- drivers/gpu/drm/msm/msm_drv.c | 13 +++++++------ drivers/gpu/drm/msm/msm_drv.h | 5 +++++ drivers/gpu/drm/msm/msm_gem_vma.c | 9 +++++++++ drivers/gpu/drm/msm/msm_gpu.c | 17 +++++++++++++++++ drivers/gpu/drm/msm/msm_gpu.h | 5 +++++ 5 files changed, 43 insertions(+), 6 deletions(-)