Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
drm/panfrost: Add an ioctl to query BO flags
This is useful when importing BOs, so we can know about cacheability
and flush the caches when needed.
v2:
- New commit
v3:
- Add Steve's R-b
v4:
- No changes
v5:
- No changes
v6:
- No changes
v7:
- No changes
v8:
- No changes
Reviewed-by: Steven Price <steven.price@arm.com>
Link: https://patch.msgid.link/20251208100841.730527-12-boris.brezillon@collabora.com
Signed-off-by: Boris Brezillon <boris.brezillon@collabora.com>
+52
+33
drivers/gpu/drm/panfrost/panfrost_drv.c
+33
drivers/gpu/drm/panfrost/panfrost_drv.c
···
630
630
return ret;
631
631
}
632
632
633
+
static int panfrost_ioctl_query_bo_info(struct drm_device *dev, void *data,
634
+
struct drm_file *file_priv)
635
+
{
636
+
struct drm_panfrost_query_bo_info *args = data;
637
+
struct drm_gem_object *gem_obj;
638
+
struct panfrost_gem_object *bo;
639
+
640
+
gem_obj = drm_gem_object_lookup(file_priv, args->handle);
641
+
if (!gem_obj) {
642
+
DRM_DEBUG("Failed to look up GEM BO %d\n", args->handle);
643
+
return -ENOENT;
644
+
}
645
+
646
+
bo = to_panfrost_bo(gem_obj);
647
+
args->pad = 0;
648
+
args->create_flags = 0;
649
+
args->extra_flags = 0;
650
+
651
+
if (drm_gem_is_imported(gem_obj)) {
652
+
args->extra_flags |= DRM_PANFROST_BO_IS_IMPORTED;
653
+
} else {
654
+
if (bo->noexec)
655
+
args->create_flags |= PANFROST_BO_NOEXEC;
656
+
657
+
if (bo->is_heap)
658
+
args->create_flags |= PANFROST_BO_HEAP;
659
+
}
660
+
661
+
drm_gem_object_put(gem_obj);
662
+
return 0;
663
+
}
664
+
633
665
int panfrost_unstable_ioctl_check(void)
634
666
{
635
667
if (!unstable_ioctls)
···
732
700
PANFROST_IOCTL(JM_CTX_CREATE, jm_ctx_create, DRM_RENDER_ALLOW),
733
701
PANFROST_IOCTL(JM_CTX_DESTROY, jm_ctx_destroy, DRM_RENDER_ALLOW),
734
702
PANFROST_IOCTL(SYNC_BO, sync_bo, DRM_RENDER_ALLOW),
703
+
PANFROST_IOCTL(QUERY_BO_INFO, query_bo_info, DRM_RENDER_ALLOW),
735
704
};
736
705
737
706
static void panfrost_gpu_show_fdinfo(struct panfrost_device *pfdev,
+19
include/uapi/drm/panfrost_drm.h
+19
include/uapi/drm/panfrost_drm.h
···
25
25
#define DRM_PANFROST_JM_CTX_CREATE 0x0a
26
26
#define DRM_PANFROST_JM_CTX_DESTROY 0x0b
27
27
#define DRM_PANFROST_SYNC_BO 0x0c
28
+
#define DRM_PANFROST_QUERY_BO_INFO 0x0d
28
29
29
30
#define DRM_IOCTL_PANFROST_SUBMIT DRM_IOW(DRM_COMMAND_BASE + DRM_PANFROST_SUBMIT, struct drm_panfrost_submit)
30
31
#define DRM_IOCTL_PANFROST_WAIT_BO DRM_IOW(DRM_COMMAND_BASE + DRM_PANFROST_WAIT_BO, struct drm_panfrost_wait_bo)
···
38
37
#define DRM_IOCTL_PANFROST_JM_CTX_CREATE DRM_IOWR(DRM_COMMAND_BASE + DRM_PANFROST_JM_CTX_CREATE, struct drm_panfrost_jm_ctx_create)
39
38
#define DRM_IOCTL_PANFROST_JM_CTX_DESTROY DRM_IOWR(DRM_COMMAND_BASE + DRM_PANFROST_JM_CTX_DESTROY, struct drm_panfrost_jm_ctx_destroy)
40
39
#define DRM_IOCTL_PANFROST_SYNC_BO DRM_IOWR(DRM_COMMAND_BASE + DRM_PANFROST_SYNC_BO, struct drm_panfrost_sync_bo)
40
+
#define DRM_IOCTL_PANFROST_QUERY_BO_INFO DRM_IOWR(DRM_COMMAND_BASE + DRM_PANFROST_QUERY_BO_INFO, struct drm_panfrost_query_bo_info)
41
41
42
42
/*
43
43
* Unstable ioctl(s): only exposed when the unsafe unstable_ioctls module
···
352
350
/** Number of BO sync ops */
353
351
__u32 op_count;
354
352
353
+
__u32 pad;
354
+
};
355
+
356
+
/** BO comes from a different subsystem. */
357
+
#define DRM_PANFROST_BO_IS_IMPORTED (1 << 0)
358
+
359
+
struct drm_panfrost_query_bo_info {
360
+
/** Handle of the object being queried. */
361
+
__u32 handle;
362
+
363
+
/** Extra flags that are not coming from the BO_CREATE ioctl(). */
364
+
__u32 extra_flags;
365
+
366
+
/** Flags passed at creation time. */
367
+
__u32 create_flags;
368
+
369
+
/** Will be zero on return. */
355
370
__u32 pad;
356
371
};
357
372