On 10/10/2025 11:11, Boris Brezillon wrote: > This is useful when importing BOs, so we can know about cacheability > and flush the caches when needed. > > v2: > - New commit > > Signed-off-by: Boris Brezillon <[email protected]>
Reviewed-by: Steven Price <[email protected]> Although see comment on the next patch... Thanks, Steve > --- > drivers/gpu/drm/panfrost/panfrost_drv.c | 33 +++++++++++++++++++++++++ > include/uapi/drm/panfrost_drm.h | 19 ++++++++++++++ > 2 files changed, 52 insertions(+) > > diff --git a/drivers/gpu/drm/panfrost/panfrost_drv.c > b/drivers/gpu/drm/panfrost/panfrost_drv.c > index cabf544f0437..00c0881fa2f0 100644 > --- a/drivers/gpu/drm/panfrost/panfrost_drv.c > +++ b/drivers/gpu/drm/panfrost/panfrost_drv.c > @@ -635,6 +635,38 @@ static int panfrost_ioctl_sync_bo(struct drm_device > *ddev, void *data, > return ret; > } > > +static int panfrost_ioctl_query_bo_info(struct drm_device *dev, void *data, > + struct drm_file *file_priv) > +{ > + struct drm_panfrost_query_bo_info *args = data; > + struct drm_gem_object *gem_obj; > + struct panfrost_gem_object *bo; > + > + gem_obj = drm_gem_object_lookup(file_priv, args->handle); > + if (!gem_obj) { > + DRM_DEBUG("Failed to look up GEM BO %d\n", args->handle); > + return -ENOENT; > + } > + > + bo = to_panfrost_bo(gem_obj); > + args->pad = 0; > + args->create_flags = 0; > + args->extra_flags = 0; > + > + if (drm_gem_is_imported(gem_obj)) { > + args->extra_flags |= DRM_PANFROST_BO_IS_IMPORTED; > + } else { > + if (bo->noexec) > + args->create_flags |= PANFROST_BO_NOEXEC; > + > + if (bo->is_heap) > + args->create_flags |= PANFROST_BO_HEAP; > + } > + > + drm_gem_object_put(gem_obj); > + return 0; > +} > + > int panfrost_unstable_ioctl_check(void) > { > if (!unstable_ioctls) > @@ -705,6 +737,7 @@ static const struct drm_ioctl_desc > panfrost_drm_driver_ioctls[] = { > PANFROST_IOCTL(JM_CTX_CREATE, jm_ctx_create, DRM_RENDER_ALLOW), > PANFROST_IOCTL(JM_CTX_DESTROY, jm_ctx_destroy, DRM_RENDER_ALLOW), > PANFROST_IOCTL(SYNC_BO, sync_bo, DRM_RENDER_ALLOW), > + PANFROST_IOCTL(QUERY_BO_INFO, query_bo_info, DRM_RENDER_ALLOW), > }; > > static void panfrost_gpu_show_fdinfo(struct panfrost_device *pfdev, > diff --git a/include/uapi/drm/panfrost_drm.h b/include/uapi/drm/panfrost_drm.h > index fcc9f930df5f..5832a291adc4 100644 > --- a/include/uapi/drm/panfrost_drm.h > +++ b/include/uapi/drm/panfrost_drm.h > @@ -25,6 +25,7 @@ extern "C" { > #define DRM_PANFROST_JM_CTX_CREATE 0x0a > #define DRM_PANFROST_JM_CTX_DESTROY 0x0b > #define DRM_PANFROST_SYNC_BO 0x0c > +#define DRM_PANFROST_QUERY_BO_INFO 0x0d > > #define DRM_IOCTL_PANFROST_SUBMIT DRM_IOW(DRM_COMMAND_BASE + > DRM_PANFROST_SUBMIT, struct drm_panfrost_submit) > #define DRM_IOCTL_PANFROST_WAIT_BO DRM_IOW(DRM_COMMAND_BASE + > DRM_PANFROST_WAIT_BO, struct drm_panfrost_wait_bo) > @@ -37,6 +38,7 @@ extern "C" { > #define DRM_IOCTL_PANFROST_JM_CTX_CREATE DRM_IOWR(DRM_COMMAND_BASE + > DRM_PANFROST_JM_CTX_CREATE, struct drm_panfrost_jm_ctx_create) > #define DRM_IOCTL_PANFROST_JM_CTX_DESTROY DRM_IOWR(DRM_COMMAND_BASE + > DRM_PANFROST_JM_CTX_DESTROY, struct drm_panfrost_jm_ctx_destroy) > #define DRM_IOCTL_PANFROST_SYNC_BO DRM_IOWR(DRM_COMMAND_BASE + > DRM_PANFROST_SYNC_BO, struct drm_panfrost_sync_bo) > +#define DRM_IOCTL_PANFROST_QUERY_BO_INFO DRM_IOWR(DRM_COMMAND_BASE + > DRM_PANFROST_QUERY_BO_INFO, struct drm_panfrost_query_bo_info) > > /* > * Unstable ioctl(s): only exposed when the unsafe unstable_ioctls module > @@ -313,6 +315,23 @@ struct drm_panfrost_sync_bo { > __u32 pad; > }; > > +/** BO comes from a different subsystem. */ > +#define DRM_PANFROST_BO_IS_IMPORTED (1 << 0) > + > +struct drm_panfrost_query_bo_info { > + /** Handle of the object being queried. */ > + __u32 handle; > + > + /** Extra flags that are not coming from the BO_CREATE ioctl(). */ > + __u32 extra_flags; > + > + /** Flags passed at creation time. */ > + __u32 create_flags; > + > + /** Will be zero on return. */ > + __u32 pad; > +}; > + > /* Definitions for coredump decoding in user space */ > #define PANFROSTDUMP_MAJOR 1 > #define PANFROSTDUMP_MINOR 0
