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drm: introduce fb_modifiers_not_supported flag in mode_config

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If only linear modifier is advertised, since there are many drivers that
only linear supported, the DRM core should handle this rather than
open-coding in every driver. However, there are legacy drivers such as
radeon that do not support modifiers but infer the actual layout of the
underlying buffer. Therefore, a new flag fb_modifiers_not_supported is
introduced for these legacy drivers, and allow_fb_modifiers is replaced
with this new flag.

v3:
 - change the order as follows:
   1. add fb_modifiers_not_supported flag
   2. add default modifiers
   3. remove allow_fb_modifiers flag
 - add a conditional disable in amdgpu_dm_plane_init()

v4:
 - modify kernel docs

v5:
 - modify kernel docs

Signed-off-by: Tomohito Esaki <etom@igel.co.jp>
Acked-by: Harry Wentland <harry.wentland@amd.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20220128060836.11216-2-etom@igel.co.jp
This commit is contained in:
Tomohito Esaki 2022-01-28 15:08:34 +09:00 committed by Daniel Vetter
parent 9987151a90
commit 2af104290d
11 changed files with 33 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
drivers/gpu/drm/amd/amdgpu/amdgpu_display.c
View File

@ -956,7 +956,7 @@ static int amdgpu_display_verify_sizes(struct amdgpu_framebuffer *rfb)
int ret;
unsigned int i, block_width, block_height, block_size_log2;
if (!rfb->base.dev->mode_config.allow_fb_modifiers)
if (rfb->base.dev->mode_config.fb_modifiers_not_supported)
return 0;
for (i = 0; i < format_info->num_planes; ++i) {
@ -1143,7 +1143,7 @@ int amdgpu_display_framebuffer_init(struct drm_device *dev,
if (ret)
return ret;
if (!dev->mode_config.allow_fb_modifiers) {
if (dev->mode_config.fb_modifiers_not_supported) {
drm_WARN_ONCE(dev, adev->family >= AMDGPU_FAMILY_AI,
"GFX9+ requires FB check based on format modifier\n");
ret = check_tiling_flags_gfx6(rfb);
@ -1151,7 +1151,7 @@ int amdgpu_display_framebuffer_init(struct drm_device *dev,
return ret;
}
if (dev->mode_config.allow_fb_modifiers &&
if (!dev->mode_config.fb_modifiers_not_supported &&
!(rfb->base.flags & DRM_MODE_FB_MODIFIERS)) {
ret = convert_tiling_flags_to_modifier(rfb);
if (ret) {

2
drivers/gpu/drm/amd/amdgpu/dce_v10_0.c
View File

@ -2798,6 +2798,8 @@ static int dce_v10_0_sw_init(void *handle)
adev_to_drm(adev)->mode_config.preferred_depth = 24;
adev_to_drm(adev)->mode_config.prefer_shadow = 1;
adev_to_drm(adev)->mode_config.fb_modifiers_not_supported = true;
adev_to_drm(adev)->mode_config.fb_base = adev->gmc.aper_base;
r = amdgpu_display_modeset_create_props(adev);

2
drivers/gpu/drm/amd/amdgpu/dce_v11_0.c
View File

@ -2916,6 +2916,8 @@ static int dce_v11_0_sw_init(void *handle)
adev_to_drm(adev)->mode_config.preferred_depth = 24;
adev_to_drm(adev)->mode_config.prefer_shadow = 1;
adev_to_drm(adev)->mode_config.fb_modifiers_not_supported = true;
adev_to_drm(adev)->mode_config.fb_base = adev->gmc.aper_base;
r = amdgpu_display_modeset_create_props(adev);

1
drivers/gpu/drm/amd/amdgpu/dce_v6_0.c
View File

@ -2674,6 +2674,7 @@ static int dce_v6_0_sw_init(void *handle)
adev_to_drm(adev)->mode_config.max_height = 16384;
adev_to_drm(adev)->mode_config.preferred_depth = 24;
adev_to_drm(adev)->mode_config.prefer_shadow = 1;
adev_to_drm(adev)->mode_config.fb_modifiers_not_supported = true;
adev_to_drm(adev)->mode_config.fb_base = adev->gmc.aper_base;
r = amdgpu_display_modeset_create_props(adev);

2
drivers/gpu/drm/amd/amdgpu/dce_v8_0.c
View File

@ -2695,6 +2695,8 @@ static int dce_v8_0_sw_init(void *handle)
adev_to_drm(adev)->mode_config.preferred_depth = 24;
adev_to_drm(adev)->mode_config.prefer_shadow = 1;
adev_to_drm(adev)->mode_config.fb_modifiers_not_supported = true;
adev_to_drm(adev)->mode_config.fb_base = adev->gmc.aper_base;
r = amdgpu_display_modeset_create_props(adev);

3
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
View File

@ -7828,6 +7828,9 @@ static int amdgpu_dm_plane_init(struct amdgpu_display_manager *dm,
if (res)
return res;
if (modifiers == NULL)
adev_to_drm(dm->adev)->mode_config.fb_modifiers_not_supported = true;
res = drm_universal_plane_init(adev_to_drm(dm->adev), plane, possible_crtcs,
&dm_plane_funcs, formats, num_formats,
modifiers, plane->type, NULL);

6
drivers/gpu/drm/drm_framebuffer.c
View File

@ -309,7 +309,7 @@ drm_internal_framebuffer_create(struct drm_device *dev,
}
if (r->flags & DRM_MODE_FB_MODIFIERS &&
!dev->mode_config.allow_fb_modifiers) {
dev->mode_config.fb_modifiers_not_supported) {
DRM_DEBUG_KMS("driver does not support fb modifiers\n");
return ERR_PTR(-EINVAL);
}
@ -594,7 +594,7 @@ int drm_mode_getfb2_ioctl(struct drm_device *dev,
r->pixel_format = fb->format->format;
r->flags = 0;
if (dev->mode_config.allow_fb_modifiers)
if (!dev->mode_config.fb_modifiers_not_supported)
r->flags |= DRM_MODE_FB_MODIFIERS;
for (i = 0; i < ARRAY_SIZE(r->handles); i++) {
@ -607,7 +607,7 @@ int drm_mode_getfb2_ioctl(struct drm_device *dev,
for (i = 0; i < fb->format->num_planes; i++) {
r->pitches[i] = fb->pitches[i];
r->offsets[i] = fb->offsets[i];
if (dev->mode_config.allow_fb_modifiers)
if (!dev->mode_config.fb_modifiers_not_supported)
r->modifier[i] = fb->modifier;
}

2
drivers/gpu/drm/drm_ioctl.c
View File

@ -297,7 +297,7 @@ static int drm_getcap(struct drm_device *dev, void *data, struct drm_file *file_
req->value = 64;
break;
case DRM_CAP_ADDFB2_MODIFIERS:
req->value = dev->mode_config.allow_fb_modifiers;
req->value = !dev->mode_config.fb_modifiers_not_supported;
break;
case DRM_CAP_CRTC_IN_VBLANK_EVENT:
req->value = 1;

6
drivers/gpu/drm/nouveau/nouveau_display.c
View File

@ -708,10 +708,12 @@ nouveau_display_create(struct drm_device *dev)
&disp->disp);
if (ret == 0) {
nouveau_display_create_properties(dev);
if (disp->disp.object.oclass < NV50_DISP)
if (disp->disp.object.oclass < NV50_DISP) {
dev->mode_config.fb_modifiers_not_supported = true;
ret = nv04_display_create(dev);
else
} else {
ret = nv50_display_create(dev);
}
}
} else {
ret = 0;

2
drivers/gpu/drm/radeon/radeon_display.c
View File

@ -1596,6 +1596,8 @@ int radeon_modeset_init(struct radeon_device *rdev)
rdev->ddev->mode_config.preferred_depth = 24;
rdev->ddev->mode_config.prefer_shadow = 1;
rdev->ddev->mode_config.fb_modifiers_not_supported = true;
rdev->ddev->mode_config.fb_base = rdev->mc.aper_base;
ret = radeon_modeset_create_props(rdev);

10
include/drm/drm_mode_config.h
View File

@ -933,6 +933,16 @@ struct drm_mode_config {
*/
bool allow_fb_modifiers;
/**
* @fb_modifiers_not_supported:
*
* When this flag is set, the DRM device will not expose modifier
* support to userspace. This is only used by legacy drivers that infer
* the buffer layout through heuristics without using modifiers. New
* drivers shall not set fhis flag.
*/
bool fb_modifiers_not_supported;
/**
* @normalize_zpos:
*