| Message ID | 20241119-vkms-remove-index-v3-1-976321a3f801@bootlin.com (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | [v3] drm/vkms: Remove index parameter from init_vkms_output | expand |
On 19/11/24 - 14:34, Louis Chauvet wrote: > VKMS currently supports only one CRTC, so it make no sense to have this > index configurable. To avoid issues, replace this hardcoded index by > drm_crtc_mask when applicable. > > There is no need to manually set a crtc mask on primary and cursor plane > as it is automatically set by drmm_crtc_alloc_with_planes. > > In addition, this will remove the use of an uninitialized structure in > vkms_add_overlay_plane. This currently works by chance because two things: > - vkms_plane_init always set a possible_crtcs value, so the problematic > branch is never used; > - drm_crtc_mask on an kzalloc'd drm_crtc returns BIT(0), and the VKMS CRTC > always have this id. > > Signed-off-by: Louis Chauvet <louis.chauvet@bootlin.com> Hi Maíra, José, You told me "LGTM" for the v2, but without leaving a Acked/Reviewed-by, should I add them? Or maybe you prefer to formally send them now? Thanks, Louis Chauvet > --- > Changes in v3: > - Rebased on drm-misc-next > - Link to v2: https://lore.kernel.org/r/20241010-vkms-remove-index-v2-1-6b8d6cfd5a15@bootlin.com > > Changes in v2: > - Applied comments from José > - Link to v1: https://lore.kernel.org/r/20240906-vkms-remove-index-v1-1-3cfedd8ccb2f@bootlin.com > --- > drivers/gpu/drm/vkms/vkms_drv.c | 2 +- > drivers/gpu/drm/vkms/vkms_drv.h | 8 ++----- > drivers/gpu/drm/vkms/vkms_output.c | 49 +++++++++++++------------------------- > drivers/gpu/drm/vkms/vkms_plane.c | 4 ++-- > 4 files changed, 21 insertions(+), 42 deletions(-) > > diff --git a/drivers/gpu/drm/vkms/vkms_drv.c b/drivers/gpu/drm/vkms/vkms_drv.c > index bab13943d8e0085bed85092d7bc8727d834768a9..e4ae69d9ef871c9ce436ad0bd8c6551d8fe7f55c 100644 > --- a/drivers/gpu/drm/vkms/vkms_drv.c > +++ b/drivers/gpu/drm/vkms/vkms_drv.c > @@ -174,7 +174,7 @@ static int vkms_modeset_init(struct vkms_device *vkmsdev) > dev->mode_config.preferred_depth = 0; > dev->mode_config.helper_private = &vkms_mode_config_helpers; > > - return vkms_output_init(vkmsdev, 0); > + return vkms_output_init(vkmsdev); > } > > static int vkms_create(struct vkms_config *config) > diff --git a/drivers/gpu/drm/vkms/vkms_drv.h b/drivers/gpu/drm/vkms/vkms_drv.h > index 672fe191e239c03e7358d43eb19215361417a781..036101ee4ea1cb0a335cd2ea78a8ca9da87fbe93 100644 > --- a/drivers/gpu/drm/vkms/vkms_drv.h > +++ b/drivers/gpu/drm/vkms/vkms_drv.h > @@ -212,21 +212,17 @@ int vkms_crtc_init(struct drm_device *dev, struct drm_crtc *crtc, > * vkms_output_init() - Initialize all sub-components needed for a VKMS device. > * > * @vkmsdev: VKMS device to initialize > - * @index: CRTC which can be attached to the planes. The caller must ensure that > - * @index is positive and less or equals to 31. > */ > -int vkms_output_init(struct vkms_device *vkmsdev, int index); > +int vkms_output_init(struct vkms_device *vkmsdev); > > /** > * vkms_plane_init() - Initialize a plane > * > * @vkmsdev: VKMS device containing the plane > * @type: type of plane to initialize > - * @index: CRTC which can be attached to the plane. The caller must ensure that > - * @index is positive and less or equals to 31. > */ > struct vkms_plane *vkms_plane_init(struct vkms_device *vkmsdev, > - enum drm_plane_type type, int index); > + enum drm_plane_type type); > > /* CRC Support */ > const char *const *vkms_get_crc_sources(struct drm_crtc *crtc, > diff --git a/drivers/gpu/drm/vkms/vkms_output.c b/drivers/gpu/drm/vkms/vkms_output.c > index 25a99fde126c7402941954015287ab0887484139..8f4bd5aef087b459d37d0cbbf90fe0145090917a 100644 > --- a/drivers/gpu/drm/vkms/vkms_output.c > +++ b/drivers/gpu/drm/vkms/vkms_output.c > @@ -32,29 +32,14 @@ static const struct drm_connector_helper_funcs vkms_conn_helper_funcs = { > .get_modes = vkms_conn_get_modes, > }; > > -static int vkms_add_overlay_plane(struct vkms_device *vkmsdev, int index, > - struct drm_crtc *crtc) > -{ > - struct vkms_plane *overlay; > - > - overlay = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_OVERLAY, index); > - if (IS_ERR(overlay)) > - return PTR_ERR(overlay); > - > - if (!overlay->base.possible_crtcs) > - overlay->base.possible_crtcs = drm_crtc_mask(crtc); > - > - return 0; > -} > - > -int vkms_output_init(struct vkms_device *vkmsdev, int index) > +int vkms_output_init(struct vkms_device *vkmsdev) > { > struct vkms_output *output = &vkmsdev->output; > struct drm_device *dev = &vkmsdev->drm; > struct drm_connector *connector = &output->connector; > struct drm_encoder *encoder = &output->encoder; > struct drm_crtc *crtc = &output->crtc; > - struct vkms_plane *primary, *cursor = NULL; > + struct vkms_plane *primary, *overlay, *cursor = NULL; > int ret; > int writeback; > unsigned int n; > @@ -65,29 +50,31 @@ int vkms_output_init(struct vkms_device *vkmsdev, int index) > * The overlay and cursor planes are not mandatory, but can be used to perform complex > * composition. > */ > - primary = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_PRIMARY, index); > + primary = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_PRIMARY); > if (IS_ERR(primary)) > return PTR_ERR(primary); > > - if (vkmsdev->config->overlay) { > - for (n = 0; n < NUM_OVERLAY_PLANES; n++) { > - ret = vkms_add_overlay_plane(vkmsdev, index, crtc); > - if (ret) > - return ret; > - } > - } > - > if (vkmsdev->config->cursor) { > - cursor = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_CURSOR, index); > + cursor = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_CURSOR); > if (IS_ERR(cursor)) > return PTR_ERR(cursor); > } > > - /* [1]: Allocation of a CRTC, its index will be BIT(0) = 1 */ > ret = vkms_crtc_init(dev, crtc, &primary->base, &cursor->base); > if (ret) > return ret; > > + if (vkmsdev->config->overlay) { > + for (n = 0; n < NUM_OVERLAY_PLANES; n++) { > + overlay = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_OVERLAY); > + if (IS_ERR(overlay)) { > + DRM_DEV_ERROR(dev->dev, "Failed to init vkms plane\n"); > + return PTR_ERR(overlay); > + } > + overlay->base.possible_crtcs = drm_crtc_mask(crtc); > + } > + } > + > ret = drm_connector_init(dev, connector, &vkms_connector_funcs, > DRM_MODE_CONNECTOR_VIRTUAL); > if (ret) { > @@ -103,11 +90,7 @@ int vkms_output_init(struct vkms_device *vkmsdev, int index) > DRM_ERROR("Failed to init encoder\n"); > goto err_encoder; > } > - /* > - * This is a hardcoded value to select crtc for the encoder. > - * BIT(0) here designate the first registered CRTC, the one allocated in [1] > - */ > - encoder->possible_crtcs = BIT(0); > + encoder->possible_crtcs = drm_crtc_mask(crtc); > > ret = drm_connector_attach_encoder(connector, encoder); > if (ret) { > diff --git a/drivers/gpu/drm/vkms/vkms_plane.c b/drivers/gpu/drm/vkms/vkms_plane.c > index e5c625ab8e3e06cb95f468c59bc3b06ef85eab6f..ad137c9a75f5e9ee3bb62e7bb2c5e3684a6ecbb6 100644 > --- a/drivers/gpu/drm/vkms/vkms_plane.c > +++ b/drivers/gpu/drm/vkms/vkms_plane.c > @@ -198,12 +198,12 @@ static const struct drm_plane_helper_funcs vkms_plane_helper_funcs = { > }; > > struct vkms_plane *vkms_plane_init(struct vkms_device *vkmsdev, > - enum drm_plane_type type, int index) > + enum drm_plane_type type) > { > struct drm_device *dev = &vkmsdev->drm; > struct vkms_plane *plane; > > - plane = drmm_universal_plane_alloc(dev, struct vkms_plane, base, 1 << index, > + plane = drmm_universal_plane_alloc(dev, struct vkms_plane, base, 0, > &vkms_plane_funcs, > vkms_formats, ARRAY_SIZE(vkms_formats), > NULL, type, NULL); > > --- > base-commit: 7d2faa8dbb7055a115fe0cd6068d7090094a573d > change-id: 20240906-vkms-remove-index-3a6e04c38e02 > > Best regards, > -- > Louis Chauvet <louis.chauvet@bootlin.com> >
On Tue, Nov 19, 2024 at 02:56:57PM +0100, Louis Chauvet wrote: > On 19/11/24 - 14:34, Louis Chauvet wrote: > > VKMS currently supports only one CRTC, so it make no sense to have this > > index configurable. To avoid issues, replace this hardcoded index by > > drm_crtc_mask when applicable. > > > > There is no need to manually set a crtc mask on primary and cursor plane > > as it is automatically set by drmm_crtc_alloc_with_planes. > > > > In addition, this will remove the use of an uninitialized structure in > > vkms_add_overlay_plane. This currently works by chance because two things: > > - vkms_plane_init always set a possible_crtcs value, so the problematic > > branch is never used; > > - drm_crtc_mask on an kzalloc'd drm_crtc returns BIT(0), and the VKMS CRTC > > always have this id. > > > > Signed-off-by: Louis Chauvet <louis.chauvet@bootlin.com> > > Hi Maíra, José, > > You told me "LGTM" for the v2, but without leaving a Acked/Reviewed-by, > should I add them? Or maybe you prefer to formally send them now? Yes, feel free to add: Reviewed-by: José Expósito <jose.exposito89@gmail.com> Thanks for rebasing the patch and fixing the conflict! Jose > Thanks, > Louis Chauvet > > > --- > > Changes in v3: > > - Rebased on drm-misc-next > > - Link to v2: https://lore.kernel.org/r/20241010-vkms-remove-index-v2-1-6b8d6cfd5a15@bootlin.com > > > > Changes in v2: > > - Applied comments from José > > - Link to v1: https://lore.kernel.org/r/20240906-vkms-remove-index-v1-1-3cfedd8ccb2f@bootlin.com > > --- > > drivers/gpu/drm/vkms/vkms_drv.c | 2 +- > > drivers/gpu/drm/vkms/vkms_drv.h | 8 ++----- > > drivers/gpu/drm/vkms/vkms_output.c | 49 +++++++++++++------------------------- > > drivers/gpu/drm/vkms/vkms_plane.c | 4 ++-- > > 4 files changed, 21 insertions(+), 42 deletions(-) > > > > diff --git a/drivers/gpu/drm/vkms/vkms_drv.c b/drivers/gpu/drm/vkms/vkms_drv.c > > index bab13943d8e0085bed85092d7bc8727d834768a9..e4ae69d9ef871c9ce436ad0bd8c6551d8fe7f55c 100644 > > --- a/drivers/gpu/drm/vkms/vkms_drv.c > > +++ b/drivers/gpu/drm/vkms/vkms_drv.c > > @@ -174,7 +174,7 @@ static int vkms_modeset_init(struct vkms_device *vkmsdev) > > dev->mode_config.preferred_depth = 0; > > dev->mode_config.helper_private = &vkms_mode_config_helpers; > > > > - return vkms_output_init(vkmsdev, 0); > > + return vkms_output_init(vkmsdev); > > } > > > > static int vkms_create(struct vkms_config *config) > > diff --git a/drivers/gpu/drm/vkms/vkms_drv.h b/drivers/gpu/drm/vkms/vkms_drv.h > > index 672fe191e239c03e7358d43eb19215361417a781..036101ee4ea1cb0a335cd2ea78a8ca9da87fbe93 100644 > > --- a/drivers/gpu/drm/vkms/vkms_drv.h > > +++ b/drivers/gpu/drm/vkms/vkms_drv.h > > @@ -212,21 +212,17 @@ int vkms_crtc_init(struct drm_device *dev, struct drm_crtc *crtc, > > * vkms_output_init() - Initialize all sub-components needed for a VKMS device. > > * > > * @vkmsdev: VKMS device to initialize > > - * @index: CRTC which can be attached to the planes. The caller must ensure that > > - * @index is positive and less or equals to 31. > > */ > > -int vkms_output_init(struct vkms_device *vkmsdev, int index); > > +int vkms_output_init(struct vkms_device *vkmsdev); > > > > /** > > * vkms_plane_init() - Initialize a plane > > * > > * @vkmsdev: VKMS device containing the plane > > * @type: type of plane to initialize > > - * @index: CRTC which can be attached to the plane. The caller must ensure that > > - * @index is positive and less or equals to 31. > > */ > > struct vkms_plane *vkms_plane_init(struct vkms_device *vkmsdev, > > - enum drm_plane_type type, int index); > > + enum drm_plane_type type); > > > > /* CRC Support */ > > const char *const *vkms_get_crc_sources(struct drm_crtc *crtc, > > diff --git a/drivers/gpu/drm/vkms/vkms_output.c b/drivers/gpu/drm/vkms/vkms_output.c > > index 25a99fde126c7402941954015287ab0887484139..8f4bd5aef087b459d37d0cbbf90fe0145090917a 100644 > > --- a/drivers/gpu/drm/vkms/vkms_output.c > > +++ b/drivers/gpu/drm/vkms/vkms_output.c > > @@ -32,29 +32,14 @@ static const struct drm_connector_helper_funcs vkms_conn_helper_funcs = { > > .get_modes = vkms_conn_get_modes, > > }; > > > > -static int vkms_add_overlay_plane(struct vkms_device *vkmsdev, int index, > > - struct drm_crtc *crtc) > > -{ > > - struct vkms_plane *overlay; > > - > > - overlay = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_OVERLAY, index); > > - if (IS_ERR(overlay)) > > - return PTR_ERR(overlay); > > - > > - if (!overlay->base.possible_crtcs) > > - overlay->base.possible_crtcs = drm_crtc_mask(crtc); > > - > > - return 0; > > -} > > - > > -int vkms_output_init(struct vkms_device *vkmsdev, int index) > > +int vkms_output_init(struct vkms_device *vkmsdev) > > { > > struct vkms_output *output = &vkmsdev->output; > > struct drm_device *dev = &vkmsdev->drm; > > struct drm_connector *connector = &output->connector; > > struct drm_encoder *encoder = &output->encoder; > > struct drm_crtc *crtc = &output->crtc; > > - struct vkms_plane *primary, *cursor = NULL; > > + struct vkms_plane *primary, *overlay, *cursor = NULL; > > int ret; > > int writeback; > > unsigned int n; > > @@ -65,29 +50,31 @@ int vkms_output_init(struct vkms_device *vkmsdev, int index) > > * The overlay and cursor planes are not mandatory, but can be used to perform complex > > * composition. > > */ > > - primary = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_PRIMARY, index); > > + primary = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_PRIMARY); > > if (IS_ERR(primary)) > > return PTR_ERR(primary); > > > > - if (vkmsdev->config->overlay) { > > - for (n = 0; n < NUM_OVERLAY_PLANES; n++) { > > - ret = vkms_add_overlay_plane(vkmsdev, index, crtc); > > - if (ret) > > - return ret; > > - } > > - } > > - > > if (vkmsdev->config->cursor) { > > - cursor = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_CURSOR, index); > > + cursor = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_CURSOR); > > if (IS_ERR(cursor)) > > return PTR_ERR(cursor); > > } > > > > - /* [1]: Allocation of a CRTC, its index will be BIT(0) = 1 */ > > ret = vkms_crtc_init(dev, crtc, &primary->base, &cursor->base); > > if (ret) > > return ret; > > > > + if (vkmsdev->config->overlay) { > > + for (n = 0; n < NUM_OVERLAY_PLANES; n++) { > > + overlay = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_OVERLAY); > > + if (IS_ERR(overlay)) { > > + DRM_DEV_ERROR(dev->dev, "Failed to init vkms plane\n"); > > + return PTR_ERR(overlay); > > + } > > + overlay->base.possible_crtcs = drm_crtc_mask(crtc); > > + } > > + } > > + > > ret = drm_connector_init(dev, connector, &vkms_connector_funcs, > > DRM_MODE_CONNECTOR_VIRTUAL); > > if (ret) { > > @@ -103,11 +90,7 @@ int vkms_output_init(struct vkms_device *vkmsdev, int index) > > DRM_ERROR("Failed to init encoder\n"); > > goto err_encoder; > > } > > - /* > > - * This is a hardcoded value to select crtc for the encoder. > > - * BIT(0) here designate the first registered CRTC, the one allocated in [1] > > - */ > > - encoder->possible_crtcs = BIT(0); > > + encoder->possible_crtcs = drm_crtc_mask(crtc); > > > > ret = drm_connector_attach_encoder(connector, encoder); > > if (ret) { > > diff --git a/drivers/gpu/drm/vkms/vkms_plane.c b/drivers/gpu/drm/vkms/vkms_plane.c > > index e5c625ab8e3e06cb95f468c59bc3b06ef85eab6f..ad137c9a75f5e9ee3bb62e7bb2c5e3684a6ecbb6 100644 > > --- a/drivers/gpu/drm/vkms/vkms_plane.c > > +++ b/drivers/gpu/drm/vkms/vkms_plane.c > > @@ -198,12 +198,12 @@ static const struct drm_plane_helper_funcs vkms_plane_helper_funcs = { > > }; > > > > struct vkms_plane *vkms_plane_init(struct vkms_device *vkmsdev, > > - enum drm_plane_type type, int index) > > + enum drm_plane_type type) > > { > > struct drm_device *dev = &vkmsdev->drm; > > struct vkms_plane *plane; > > > > - plane = drmm_universal_plane_alloc(dev, struct vkms_plane, base, 1 << index, > > + plane = drmm_universal_plane_alloc(dev, struct vkms_plane, base, 0, > > &vkms_plane_funcs, > > vkms_formats, ARRAY_SIZE(vkms_formats), > > NULL, type, NULL); > > > > --- > > base-commit: 7d2faa8dbb7055a115fe0cd6068d7090094a573d > > change-id: 20240906-vkms-remove-index-3a6e04c38e02 > > > > Best regards, > > -- > > Louis Chauvet <louis.chauvet@bootlin.com> > >
On 19/11/24 10:56, Louis Chauvet wrote: > On 19/11/24 - 14:34, Louis Chauvet wrote: >> VKMS currently supports only one CRTC, so it make no sense to have this >> index configurable. To avoid issues, replace this hardcoded index by >> drm_crtc_mask when applicable. >> >> There is no need to manually set a crtc mask on primary and cursor plane >> as it is automatically set by drmm_crtc_alloc_with_planes. >> >> In addition, this will remove the use of an uninitialized structure in >> vkms_add_overlay_plane. This currently works by chance because two things: >> - vkms_plane_init always set a possible_crtcs value, so the problematic >> branch is never used; >> - drm_crtc_mask on an kzalloc'd drm_crtc returns BIT(0), and the VKMS CRTC >> always have this id. >> >> Signed-off-by: Louis Chauvet <louis.chauvet@bootlin.com> > > Hi Maíra, José, > > You told me "LGTM" for the v2, but without leaving a Acked/Reviewed-by, > should I add them? Or maybe you prefer to formally send them now? Reviewed-by: Maíra Canal <mcanal@igalia.com> Best Regards, - Maíra > > Thanks, > Louis Chauvet > >> --- >> Changes in v3: >> - Rebased on drm-misc-next >> - Link to v2: https://lore.kernel.org/r/20241010-vkms-remove-index-v2-1-6b8d6cfd5a15@bootlin.com >> >> Changes in v2: >> - Applied comments from José >> - Link to v1: https://lore.kernel.org/r/20240906-vkms-remove-index-v1-1-3cfedd8ccb2f@bootlin.com >> --- >> drivers/gpu/drm/vkms/vkms_drv.c | 2 +- >> drivers/gpu/drm/vkms/vkms_drv.h | 8 ++----- >> drivers/gpu/drm/vkms/vkms_output.c | 49 +++++++++++++------------------------- >> drivers/gpu/drm/vkms/vkms_plane.c | 4 ++-- >> 4 files changed, 21 insertions(+), 42 deletions(-) >> >> diff --git a/drivers/gpu/drm/vkms/vkms_drv.c b/drivers/gpu/drm/vkms/vkms_drv.c >> index bab13943d8e0085bed85092d7bc8727d834768a9..e4ae69d9ef871c9ce436ad0bd8c6551d8fe7f55c 100644 >> --- a/drivers/gpu/drm/vkms/vkms_drv.c >> +++ b/drivers/gpu/drm/vkms/vkms_drv.c >> @@ -174,7 +174,7 @@ static int vkms_modeset_init(struct vkms_device *vkmsdev) >> dev->mode_config.preferred_depth = 0; >> dev->mode_config.helper_private = &vkms_mode_config_helpers; >> >> - return vkms_output_init(vkmsdev, 0); >> + return vkms_output_init(vkmsdev); >> } >> >> static int vkms_create(struct vkms_config *config) >> diff --git a/drivers/gpu/drm/vkms/vkms_drv.h b/drivers/gpu/drm/vkms/vkms_drv.h >> index 672fe191e239c03e7358d43eb19215361417a781..036101ee4ea1cb0a335cd2ea78a8ca9da87fbe93 100644 >> --- a/drivers/gpu/drm/vkms/vkms_drv.h >> +++ b/drivers/gpu/drm/vkms/vkms_drv.h >> @@ -212,21 +212,17 @@ int vkms_crtc_init(struct drm_device *dev, struct drm_crtc *crtc, >> * vkms_output_init() - Initialize all sub-components needed for a VKMS device. >> * >> * @vkmsdev: VKMS device to initialize >> - * @index: CRTC which can be attached to the planes. The caller must ensure that >> - * @index is positive and less or equals to 31. >> */ >> -int vkms_output_init(struct vkms_device *vkmsdev, int index); >> +int vkms_output_init(struct vkms_device *vkmsdev); >> >> /** >> * vkms_plane_init() - Initialize a plane >> * >> * @vkmsdev: VKMS device containing the plane >> * @type: type of plane to initialize >> - * @index: CRTC which can be attached to the plane. The caller must ensure that >> - * @index is positive and less or equals to 31. >> */ >> struct vkms_plane *vkms_plane_init(struct vkms_device *vkmsdev, >> - enum drm_plane_type type, int index); >> + enum drm_plane_type type); >> >> /* CRC Support */ >> const char *const *vkms_get_crc_sources(struct drm_crtc *crtc, >> diff --git a/drivers/gpu/drm/vkms/vkms_output.c b/drivers/gpu/drm/vkms/vkms_output.c >> index 25a99fde126c7402941954015287ab0887484139..8f4bd5aef087b459d37d0cbbf90fe0145090917a 100644 >> --- a/drivers/gpu/drm/vkms/vkms_output.c >> +++ b/drivers/gpu/drm/vkms/vkms_output.c >> @@ -32,29 +32,14 @@ static const struct drm_connector_helper_funcs vkms_conn_helper_funcs = { >> .get_modes = vkms_conn_get_modes, >> }; >> >> -static int vkms_add_overlay_plane(struct vkms_device *vkmsdev, int index, >> - struct drm_crtc *crtc) >> -{ >> - struct vkms_plane *overlay; >> - >> - overlay = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_OVERLAY, index); >> - if (IS_ERR(overlay)) >> - return PTR_ERR(overlay); >> - >> - if (!overlay->base.possible_crtcs) >> - overlay->base.possible_crtcs = drm_crtc_mask(crtc); >> - >> - return 0; >> -} >> - >> -int vkms_output_init(struct vkms_device *vkmsdev, int index) >> +int vkms_output_init(struct vkms_device *vkmsdev) >> { >> struct vkms_output *output = &vkmsdev->output; >> struct drm_device *dev = &vkmsdev->drm; >> struct drm_connector *connector = &output->connector; >> struct drm_encoder *encoder = &output->encoder; >> struct drm_crtc *crtc = &output->crtc; >> - struct vkms_plane *primary, *cursor = NULL; >> + struct vkms_plane *primary, *overlay, *cursor = NULL; >> int ret; >> int writeback; >> unsigned int n; >> @@ -65,29 +50,31 @@ int vkms_output_init(struct vkms_device *vkmsdev, int index) >> * The overlay and cursor planes are not mandatory, but can be used to perform complex >> * composition. >> */ >> - primary = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_PRIMARY, index); >> + primary = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_PRIMARY); >> if (IS_ERR(primary)) >> return PTR_ERR(primary); >> >> - if (vkmsdev->config->overlay) { >> - for (n = 0; n < NUM_OVERLAY_PLANES; n++) { >> - ret = vkms_add_overlay_plane(vkmsdev, index, crtc); >> - if (ret) >> - return ret; >> - } >> - } >> - >> if (vkmsdev->config->cursor) { >> - cursor = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_CURSOR, index); >> + cursor = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_CURSOR); >> if (IS_ERR(cursor)) >> return PTR_ERR(cursor); >> } >> >> - /* [1]: Allocation of a CRTC, its index will be BIT(0) = 1 */ >> ret = vkms_crtc_init(dev, crtc, &primary->base, &cursor->base); >> if (ret) >> return ret; >> >> + if (vkmsdev->config->overlay) { >> + for (n = 0; n < NUM_OVERLAY_PLANES; n++) { >> + overlay = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_OVERLAY); >> + if (IS_ERR(overlay)) { >> + DRM_DEV_ERROR(dev->dev, "Failed to init vkms plane\n"); >> + return PTR_ERR(overlay); >> + } >> + overlay->base.possible_crtcs = drm_crtc_mask(crtc); >> + } >> + } >> + >> ret = drm_connector_init(dev, connector, &vkms_connector_funcs, >> DRM_MODE_CONNECTOR_VIRTUAL); >> if (ret) { >> @@ -103,11 +90,7 @@ int vkms_output_init(struct vkms_device *vkmsdev, int index) >> DRM_ERROR("Failed to init encoder\n"); >> goto err_encoder; >> } >> - /* >> - * This is a hardcoded value to select crtc for the encoder. >> - * BIT(0) here designate the first registered CRTC, the one allocated in [1] >> - */ >> - encoder->possible_crtcs = BIT(0); >> + encoder->possible_crtcs = drm_crtc_mask(crtc); >> >> ret = drm_connector_attach_encoder(connector, encoder); >> if (ret) { >> diff --git a/drivers/gpu/drm/vkms/vkms_plane.c b/drivers/gpu/drm/vkms/vkms_plane.c >> index e5c625ab8e3e06cb95f468c59bc3b06ef85eab6f..ad137c9a75f5e9ee3bb62e7bb2c5e3684a6ecbb6 100644 >> --- a/drivers/gpu/drm/vkms/vkms_plane.c >> +++ b/drivers/gpu/drm/vkms/vkms_plane.c >> @@ -198,12 +198,12 @@ static const struct drm_plane_helper_funcs vkms_plane_helper_funcs = { >> }; >> >> struct vkms_plane *vkms_plane_init(struct vkms_device *vkmsdev, >> - enum drm_plane_type type, int index) >> + enum drm_plane_type type) >> { >> struct drm_device *dev = &vkmsdev->drm; >> struct vkms_plane *plane; >> >> - plane = drmm_universal_plane_alloc(dev, struct vkms_plane, base, 1 << index, >> + plane = drmm_universal_plane_alloc(dev, struct vkms_plane, base, 0, >> &vkms_plane_funcs, >> vkms_formats, ARRAY_SIZE(vkms_formats), >> NULL, type, NULL); >> >> --- >> base-commit: 7d2faa8dbb7055a115fe0cd6068d7090094a573d >> change-id: 20240906-vkms-remove-index-3a6e04c38e02 >> >> Best regards, >> -- >> Louis Chauvet <louis.chauvet@bootlin.com> >>
On 19/11/24 - 14:34, Louis Chauvet wrote: > VKMS currently supports only one CRTC, so it make no sense to have this > index configurable. To avoid issues, replace this hardcoded index by > drm_crtc_mask when applicable. > > There is no need to manually set a crtc mask on primary and cursor plane > as it is automatically set by drmm_crtc_alloc_with_planes. > > In addition, this will remove the use of an uninitialized structure in > vkms_add_overlay_plane. This currently works by chance because two things: > - vkms_plane_init always set a possible_crtcs value, so the problematic > branch is never used; > - drm_crtc_mask on an kzalloc'd drm_crtc returns BIT(0), and the VKMS CRTC > always have this id. > > Signed-off-by: Louis Chauvet <louis.chauvet@bootlin.com> Applied on drm-misc-next: https://gitlab.freedesktop.org/drm/misc/kernel/-/commit/12e755103f2404fa87bd1d7af93100ec45b43feb > --- > Changes in v3: > - Rebased on drm-misc-next > - Link to v2: https://lore.kernel.org/r/20241010-vkms-remove-index-v2-1-6b8d6cfd5a15@bootlin.com > > Changes in v2: > - Applied comments from José > - Link to v1: https://lore.kernel.org/r/20240906-vkms-remove-index-v1-1-3cfedd8ccb2f@bootlin.com > --- > drivers/gpu/drm/vkms/vkms_drv.c | 2 +- > drivers/gpu/drm/vkms/vkms_drv.h | 8 ++----- > drivers/gpu/drm/vkms/vkms_output.c | 49 +++++++++++++------------------------- > drivers/gpu/drm/vkms/vkms_plane.c | 4 ++-- > 4 files changed, 21 insertions(+), 42 deletions(-) > > diff --git a/drivers/gpu/drm/vkms/vkms_drv.c b/drivers/gpu/drm/vkms/vkms_drv.c > index bab13943d8e0085bed85092d7bc8727d834768a9..e4ae69d9ef871c9ce436ad0bd8c6551d8fe7f55c 100644 > --- a/drivers/gpu/drm/vkms/vkms_drv.c > +++ b/drivers/gpu/drm/vkms/vkms_drv.c > @@ -174,7 +174,7 @@ static int vkms_modeset_init(struct vkms_device *vkmsdev) > dev->mode_config.preferred_depth = 0; > dev->mode_config.helper_private = &vkms_mode_config_helpers; > > - return vkms_output_init(vkmsdev, 0); > + return vkms_output_init(vkmsdev); > } > > static int vkms_create(struct vkms_config *config) > diff --git a/drivers/gpu/drm/vkms/vkms_drv.h b/drivers/gpu/drm/vkms/vkms_drv.h > index 672fe191e239c03e7358d43eb19215361417a781..036101ee4ea1cb0a335cd2ea78a8ca9da87fbe93 100644 > --- a/drivers/gpu/drm/vkms/vkms_drv.h > +++ b/drivers/gpu/drm/vkms/vkms_drv.h > @@ -212,21 +212,17 @@ int vkms_crtc_init(struct drm_device *dev, struct drm_crtc *crtc, > * vkms_output_init() - Initialize all sub-components needed for a VKMS device. > * > * @vkmsdev: VKMS device to initialize > - * @index: CRTC which can be attached to the planes. The caller must ensure that > - * @index is positive and less or equals to 31. > */ > -int vkms_output_init(struct vkms_device *vkmsdev, int index); > +int vkms_output_init(struct vkms_device *vkmsdev); > > /** > * vkms_plane_init() - Initialize a plane > * > * @vkmsdev: VKMS device containing the plane > * @type: type of plane to initialize > - * @index: CRTC which can be attached to the plane. The caller must ensure that > - * @index is positive and less or equals to 31. > */ > struct vkms_plane *vkms_plane_init(struct vkms_device *vkmsdev, > - enum drm_plane_type type, int index); > + enum drm_plane_type type); > > /* CRC Support */ > const char *const *vkms_get_crc_sources(struct drm_crtc *crtc, > diff --git a/drivers/gpu/drm/vkms/vkms_output.c b/drivers/gpu/drm/vkms/vkms_output.c > index 25a99fde126c7402941954015287ab0887484139..8f4bd5aef087b459d37d0cbbf90fe0145090917a 100644 > --- a/drivers/gpu/drm/vkms/vkms_output.c > +++ b/drivers/gpu/drm/vkms/vkms_output.c > @@ -32,29 +32,14 @@ static const struct drm_connector_helper_funcs vkms_conn_helper_funcs = { > .get_modes = vkms_conn_get_modes, > }; > > -static int vkms_add_overlay_plane(struct vkms_device *vkmsdev, int index, > - struct drm_crtc *crtc) > -{ > - struct vkms_plane *overlay; > - > - overlay = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_OVERLAY, index); > - if (IS_ERR(overlay)) > - return PTR_ERR(overlay); > - > - if (!overlay->base.possible_crtcs) > - overlay->base.possible_crtcs = drm_crtc_mask(crtc); > - > - return 0; > -} > - > -int vkms_output_init(struct vkms_device *vkmsdev, int index) > +int vkms_output_init(struct vkms_device *vkmsdev) > { > struct vkms_output *output = &vkmsdev->output; > struct drm_device *dev = &vkmsdev->drm; > struct drm_connector *connector = &output->connector; > struct drm_encoder *encoder = &output->encoder; > struct drm_crtc *crtc = &output->crtc; > - struct vkms_plane *primary, *cursor = NULL; > + struct vkms_plane *primary, *overlay, *cursor = NULL; > int ret; > int writeback; > unsigned int n; > @@ -65,29 +50,31 @@ int vkms_output_init(struct vkms_device *vkmsdev, int index) > * The overlay and cursor planes are not mandatory, but can be used to perform complex > * composition. > */ > - primary = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_PRIMARY, index); > + primary = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_PRIMARY); > if (IS_ERR(primary)) > return PTR_ERR(primary); > > - if (vkmsdev->config->overlay) { > - for (n = 0; n < NUM_OVERLAY_PLANES; n++) { > - ret = vkms_add_overlay_plane(vkmsdev, index, crtc); > - if (ret) > - return ret; > - } > - } > - > if (vkmsdev->config->cursor) { > - cursor = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_CURSOR, index); > + cursor = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_CURSOR); > if (IS_ERR(cursor)) > return PTR_ERR(cursor); > } > > - /* [1]: Allocation of a CRTC, its index will be BIT(0) = 1 */ > ret = vkms_crtc_init(dev, crtc, &primary->base, &cursor->base); > if (ret) > return ret; > > + if (vkmsdev->config->overlay) { > + for (n = 0; n < NUM_OVERLAY_PLANES; n++) { > + overlay = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_OVERLAY); > + if (IS_ERR(overlay)) { > + DRM_DEV_ERROR(dev->dev, "Failed to init vkms plane\n"); > + return PTR_ERR(overlay); > + } > + overlay->base.possible_crtcs = drm_crtc_mask(crtc); > + } > + } > + > ret = drm_connector_init(dev, connector, &vkms_connector_funcs, > DRM_MODE_CONNECTOR_VIRTUAL); > if (ret) { > @@ -103,11 +90,7 @@ int vkms_output_init(struct vkms_device *vkmsdev, int index) > DRM_ERROR("Failed to init encoder\n"); > goto err_encoder; > } > - /* > - * This is a hardcoded value to select crtc for the encoder. > - * BIT(0) here designate the first registered CRTC, the one allocated in [1] > - */ > - encoder->possible_crtcs = BIT(0); > + encoder->possible_crtcs = drm_crtc_mask(crtc); > > ret = drm_connector_attach_encoder(connector, encoder); > if (ret) { > diff --git a/drivers/gpu/drm/vkms/vkms_plane.c b/drivers/gpu/drm/vkms/vkms_plane.c > index e5c625ab8e3e06cb95f468c59bc3b06ef85eab6f..ad137c9a75f5e9ee3bb62e7bb2c5e3684a6ecbb6 100644 > --- a/drivers/gpu/drm/vkms/vkms_plane.c > +++ b/drivers/gpu/drm/vkms/vkms_plane.c > @@ -198,12 +198,12 @@ static const struct drm_plane_helper_funcs vkms_plane_helper_funcs = { > }; > > struct vkms_plane *vkms_plane_init(struct vkms_device *vkmsdev, > - enum drm_plane_type type, int index) > + enum drm_plane_type type) > { > struct drm_device *dev = &vkmsdev->drm; > struct vkms_plane *plane; > > - plane = drmm_universal_plane_alloc(dev, struct vkms_plane, base, 1 << index, > + plane = drmm_universal_plane_alloc(dev, struct vkms_plane, base, 0, > &vkms_plane_funcs, > vkms_formats, ARRAY_SIZE(vkms_formats), > NULL, type, NULL); > > --- > base-commit: 7d2faa8dbb7055a115fe0cd6068d7090094a573d > change-id: 20240906-vkms-remove-index-3a6e04c38e02 > > Best regards, > -- > Louis Chauvet <louis.chauvet@bootlin.com> >
diff --git a/drivers/gpu/drm/vkms/vkms_drv.c b/drivers/gpu/drm/vkms/vkms_drv.c index bab13943d8e0085bed85092d7bc8727d834768a9..e4ae69d9ef871c9ce436ad0bd8c6551d8fe7f55c 100644 --- a/drivers/gpu/drm/vkms/vkms_drv.c +++ b/drivers/gpu/drm/vkms/vkms_drv.c @@ -174,7 +174,7 @@ static int vkms_modeset_init(struct vkms_device *vkmsdev) dev->mode_config.preferred_depth = 0; dev->mode_config.helper_private = &vkms_mode_config_helpers; - return vkms_output_init(vkmsdev, 0); + return vkms_output_init(vkmsdev); } static int vkms_create(struct vkms_config *config) diff --git a/drivers/gpu/drm/vkms/vkms_drv.h b/drivers/gpu/drm/vkms/vkms_drv.h index 672fe191e239c03e7358d43eb19215361417a781..036101ee4ea1cb0a335cd2ea78a8ca9da87fbe93 100644 --- a/drivers/gpu/drm/vkms/vkms_drv.h +++ b/drivers/gpu/drm/vkms/vkms_drv.h @@ -212,21 +212,17 @@ int vkms_crtc_init(struct drm_device *dev, struct drm_crtc *crtc, * vkms_output_init() - Initialize all sub-components needed for a VKMS device. * * @vkmsdev: VKMS device to initialize - * @index: CRTC which can be attached to the planes. The caller must ensure that - * @index is positive and less or equals to 31. */ -int vkms_output_init(struct vkms_device *vkmsdev, int index); +int vkms_output_init(struct vkms_device *vkmsdev); /** * vkms_plane_init() - Initialize a plane * * @vkmsdev: VKMS device containing the plane * @type: type of plane to initialize - * @index: CRTC which can be attached to the plane. The caller must ensure that - * @index is positive and less or equals to 31. */ struct vkms_plane *vkms_plane_init(struct vkms_device *vkmsdev, - enum drm_plane_type type, int index); + enum drm_plane_type type); /* CRC Support */ const char *const *vkms_get_crc_sources(struct drm_crtc *crtc, diff --git a/drivers/gpu/drm/vkms/vkms_output.c b/drivers/gpu/drm/vkms/vkms_output.c index 25a99fde126c7402941954015287ab0887484139..8f4bd5aef087b459d37d0cbbf90fe0145090917a 100644 --- a/drivers/gpu/drm/vkms/vkms_output.c +++ b/drivers/gpu/drm/vkms/vkms_output.c @@ -32,29 +32,14 @@ static const struct drm_connector_helper_funcs vkms_conn_helper_funcs = { .get_modes = vkms_conn_get_modes, }; -static int vkms_add_overlay_plane(struct vkms_device *vkmsdev, int index, - struct drm_crtc *crtc) -{ - struct vkms_plane *overlay; - - overlay = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_OVERLAY, index); - if (IS_ERR(overlay)) - return PTR_ERR(overlay); - - if (!overlay->base.possible_crtcs) - overlay->base.possible_crtcs = drm_crtc_mask(crtc); - - return 0; -} - -int vkms_output_init(struct vkms_device *vkmsdev, int index) +int vkms_output_init(struct vkms_device *vkmsdev) { struct vkms_output *output = &vkmsdev->output; struct drm_device *dev = &vkmsdev->drm; struct drm_connector *connector = &output->connector; struct drm_encoder *encoder = &output->encoder; struct drm_crtc *crtc = &output->crtc; - struct vkms_plane *primary, *cursor = NULL; + struct vkms_plane *primary, *overlay, *cursor = NULL; int ret; int writeback; unsigned int n; @@ -65,29 +50,31 @@ int vkms_output_init(struct vkms_device *vkmsdev, int index) * The overlay and cursor planes are not mandatory, but can be used to perform complex * composition. */ - primary = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_PRIMARY, index); + primary = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_PRIMARY); if (IS_ERR(primary)) return PTR_ERR(primary); - if (vkmsdev->config->overlay) { - for (n = 0; n < NUM_OVERLAY_PLANES; n++) { - ret = vkms_add_overlay_plane(vkmsdev, index, crtc); - if (ret) - return ret; - } - } - if (vkmsdev->config->cursor) { - cursor = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_CURSOR, index); + cursor = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_CURSOR); if (IS_ERR(cursor)) return PTR_ERR(cursor); } - /* [1]: Allocation of a CRTC, its index will be BIT(0) = 1 */ ret = vkms_crtc_init(dev, crtc, &primary->base, &cursor->base); if (ret) return ret; + if (vkmsdev->config->overlay) { + for (n = 0; n < NUM_OVERLAY_PLANES; n++) { + overlay = vkms_plane_init(vkmsdev, DRM_PLANE_TYPE_OVERLAY); + if (IS_ERR(overlay)) { + DRM_DEV_ERROR(dev->dev, "Failed to init vkms plane\n"); + return PTR_ERR(overlay); + } + overlay->base.possible_crtcs = drm_crtc_mask(crtc); + } + } + ret = drm_connector_init(dev, connector, &vkms_connector_funcs, DRM_MODE_CONNECTOR_VIRTUAL); if (ret) { @@ -103,11 +90,7 @@ int vkms_output_init(struct vkms_device *vkmsdev, int index) DRM_ERROR("Failed to init encoder\n"); goto err_encoder; } - /* - * This is a hardcoded value to select crtc for the encoder. - * BIT(0) here designate the first registered CRTC, the one allocated in [1] - */ - encoder->possible_crtcs = BIT(0); + encoder->possible_crtcs = drm_crtc_mask(crtc); ret = drm_connector_attach_encoder(connector, encoder); if (ret) { diff --git a/drivers/gpu/drm/vkms/vkms_plane.c b/drivers/gpu/drm/vkms/vkms_plane.c index e5c625ab8e3e06cb95f468c59bc3b06ef85eab6f..ad137c9a75f5e9ee3bb62e7bb2c5e3684a6ecbb6 100644 --- a/drivers/gpu/drm/vkms/vkms_plane.c +++ b/drivers/gpu/drm/vkms/vkms_plane.c @@ -198,12 +198,12 @@ static const struct drm_plane_helper_funcs vkms_plane_helper_funcs = { }; struct vkms_plane *vkms_plane_init(struct vkms_device *vkmsdev, - enum drm_plane_type type, int index) + enum drm_plane_type type) { struct drm_device *dev = &vkmsdev->drm; struct vkms_plane *plane; - plane = drmm_universal_plane_alloc(dev, struct vkms_plane, base, 1 << index, + plane = drmm_universal_plane_alloc(dev, struct vkms_plane, base, 0, &vkms_plane_funcs, vkms_formats, ARRAY_SIZE(vkms_formats), NULL, type, NULL);
VKMS currently supports only one CRTC, so it make no sense to have this index configurable. To avoid issues, replace this hardcoded index by drm_crtc_mask when applicable. There is no need to manually set a crtc mask on primary and cursor plane as it is automatically set by drmm_crtc_alloc_with_planes. In addition, this will remove the use of an uninitialized structure in vkms_add_overlay_plane. This currently works by chance because two things: - vkms_plane_init always set a possible_crtcs value, so the problematic branch is never used; - drm_crtc_mask on an kzalloc'd drm_crtc returns BIT(0), and the VKMS CRTC always have this id. Signed-off-by: Louis Chauvet <louis.chauvet@bootlin.com> --- Changes in v3: - Rebased on drm-misc-next - Link to v2: https://lore.kernel.org/r/20241010-vkms-remove-index-v2-1-6b8d6cfd5a15@bootlin.com Changes in v2: - Applied comments from José - Link to v1: https://lore.kernel.org/r/20240906-vkms-remove-index-v1-1-3cfedd8ccb2f@bootlin.com --- drivers/gpu/drm/vkms/vkms_drv.c | 2 +- drivers/gpu/drm/vkms/vkms_drv.h | 8 ++----- drivers/gpu/drm/vkms/vkms_output.c | 49 +++++++++++++------------------------- drivers/gpu/drm/vkms/vkms_plane.c | 4 ++-- 4 files changed, 21 insertions(+), 42 deletions(-) --- base-commit: 7d2faa8dbb7055a115fe0cd6068d7090094a573d change-id: 20240906-vkms-remove-index-3a6e04c38e02 Best regards,