[PATCH 06/14] drm: extract drm_atomic_uapi.c
Rodrigo Vivi
rodrigo.vivi at intel.com
Tue Sep 4 20:41:33 UTC 2018
On Mon, Sep 03, 2018 at 06:54:31PM +0200, Daniel Vetter wrote:
> This leaves all the commit/check and state handling in drm_atomic.c,
> while pulling all the uapi glue and the huge ioctl itself into a
> seprate file.
>
> This seems to almost perfectly split the rather big drm_atomic.c file
> into 2 equal sizes.
>
> Also adjust the kerneldoc and type a very terse overview text.
>
> v2: Rebase.
>
> v3: Fix tiny typo.
>
> Signed-off-by: Daniel Vetter <daniel.vetter at intel.com>
> Cc: David Airlie <airlied at linux.ie>
> Cc: Gustavo Padovan <gustavo at padovan.org>
> Cc: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
> Cc: Sean Paul <seanpaul at chromium.org>
> Cc: Jani Nikula <jani.nikula at linux.intel.com>
> Cc: Joonas Lahtinen <joonas.lahtinen at linux.intel.com>
> Cc: Rodrigo Vivi <rodrigo.vivi at intel.com>
> Cc: Rob Clark <robdclark at gmail.com>
> Cc: Eric Anholt <eric at anholt.net>
> Cc: intel-gfx at lists.freedesktop.org
> Cc: linux-arm-msm at vger.kernel.org
> Cc: freedreno at lists.freedesktop.org
> ---
> Documentation/gpu/drm-kms.rst | 11 +-
> drivers/gpu/drm/Makefile | 3 +-
> drivers/gpu/drm/drm_atomic.c | 1359 +----------------
> drivers/gpu/drm/drm_atomic_helper.c | 1 +
> drivers/gpu/drm/drm_atomic_uapi.c | 1393 ++++++++++++++++++
> drivers/gpu/drm/drm_crtc_helper.c | 1 +
> drivers/gpu/drm/drm_crtc_internal.h | 5 +
> drivers/gpu/drm/drm_framebuffer.c | 1 +
> drivers/gpu/drm/drm_gem_framebuffer_helper.c | 1 +
> drivers/gpu/drm/drm_plane_helper.c | 1 +
> drivers/gpu/drm/i915/intel_display.c | 1 +
> drivers/gpu/drm/msm/msm_atomic.c | 2 +
> drivers/gpu/drm/vc4/vc4_crtc.c | 1 +
> drivers/gpu/drm/vc4/vc4_plane.c | 1 +
> include/drm/drm_atomic.h | 16 -
> include/drm/drm_atomic_uapi.h | 58 +
> 16 files changed, 1480 insertions(+), 1375 deletions(-)
> create mode 100644 drivers/gpu/drm/drm_atomic_uapi.c
> create mode 100644 include/drm/drm_atomic_uapi.h
>
> diff --git a/Documentation/gpu/drm-kms.rst b/Documentation/gpu/drm-kms.rst
> index 3a9dd68b97c9..4b1501b4835b 100644
> --- a/Documentation/gpu/drm-kms.rst
> +++ b/Documentation/gpu/drm-kms.rst
> @@ -287,6 +287,15 @@ Atomic Mode Setting Function Reference
> .. kernel-doc:: drivers/gpu/drm/drm_atomic.c
> :export:
>
> +Atomic Mode Setting IOCTL and UAPI Functions
> +--------------------------------------------
> +
> +.. kernel-doc:: drivers/gpu/drm/drm_atomic_uapi.c
> + :doc: overview
> +
> +.. kernel-doc:: drivers/gpu/drm/drm_atomic_uapi.c
> + :export:
> +
> CRTC Abstraction
> ================
>
> @@ -563,7 +572,7 @@ Tile Group Property
> Explicit Fencing Properties
> ---------------------------
>
> -.. kernel-doc:: drivers/gpu/drm/drm_atomic.c
> +.. kernel-doc:: drivers/gpu/drm/drm_atomic_uapi.c
> :doc: explicit fencing properties
>
> Existing KMS Properties
> diff --git a/drivers/gpu/drm/Makefile b/drivers/gpu/drm/Makefile
> index a6771cef85e2..bc6a16a3c36e 100644
> --- a/drivers/gpu/drm/Makefile
> +++ b/drivers/gpu/drm/Makefile
> @@ -18,7 +18,8 @@ drm-y := drm_auth.o drm_bufs.o drm_cache.o \
> drm_encoder.o drm_mode_object.o drm_property.o \
> drm_plane.o drm_color_mgmt.o drm_print.o \
> drm_dumb_buffers.o drm_mode_config.o drm_vblank.o \
> - drm_syncobj.o drm_lease.o drm_writeback.o drm_client.o
> + drm_syncobj.o drm_lease.o drm_writeback.o drm_client.o \
> + drm_atomic_uapi.o
>
> drm-$(CONFIG_DRM_LIB_RANDOM) += lib/drm_random.o
> drm-$(CONFIG_DRM_VM) += drm_vm.o
> diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
> index 29a4e6959358..19634e03b78e 100644
> --- a/drivers/gpu/drm/drm_atomic.c
> +++ b/drivers/gpu/drm/drm_atomic.c
> @@ -28,6 +28,7 @@
>
> #include <drm/drmP.h>
> #include <drm/drm_atomic.h>
> +#include <drm/drm_atomic_uapi.h>
> #include <drm/drm_mode.h>
> #include <drm/drm_print.h>
> #include <drm/drm_writeback.h>
> @@ -309,285 +310,6 @@ drm_atomic_get_crtc_state(struct drm_atomic_state *state,
> }
> EXPORT_SYMBOL(drm_atomic_get_crtc_state);
>
> -static void set_out_fence_for_crtc(struct drm_atomic_state *state,
> - struct drm_crtc *crtc, s32 __user *fence_ptr)
> -{
> - state->crtcs[drm_crtc_index(crtc)].out_fence_ptr = fence_ptr;
> -}
> -
> -static s32 __user *get_out_fence_for_crtc(struct drm_atomic_state *state,
> - struct drm_crtc *crtc)
> -{
> - s32 __user *fence_ptr;
> -
> - fence_ptr = state->crtcs[drm_crtc_index(crtc)].out_fence_ptr;
> - state->crtcs[drm_crtc_index(crtc)].out_fence_ptr = NULL;
> -
> - return fence_ptr;
> -}
> -
> -static int set_out_fence_for_connector(struct drm_atomic_state *state,
> - struct drm_connector *connector,
> - s32 __user *fence_ptr)
> -{
> - unsigned int index = drm_connector_index(connector);
> -
> - if (!fence_ptr)
> - return 0;
> -
> - if (put_user(-1, fence_ptr))
> - return -EFAULT;
> -
> - state->connectors[index].out_fence_ptr = fence_ptr;
> -
> - return 0;
> -}
> -
> -static s32 __user *get_out_fence_for_connector(struct drm_atomic_state *state,
> - struct drm_connector *connector)
> -{
> - unsigned int index = drm_connector_index(connector);
> - s32 __user *fence_ptr;
> -
> - fence_ptr = state->connectors[index].out_fence_ptr;
> - state->connectors[index].out_fence_ptr = NULL;
> -
> - return fence_ptr;
> -}
> -
> -/**
> - * drm_atomic_set_mode_for_crtc - set mode for CRTC
> - * @state: the CRTC whose incoming state to update
> - * @mode: kernel-internal mode to use for the CRTC, or NULL to disable
> - *
> - * Set a mode (originating from the kernel) on the desired CRTC state and update
> - * the enable property.
> - *
> - * RETURNS:
> - * Zero on success, error code on failure. Cannot return -EDEADLK.
> - */
> -int drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state,
> - const struct drm_display_mode *mode)
> -{
> - struct drm_crtc *crtc = state->crtc;
> - struct drm_mode_modeinfo umode;
> -
> - /* Early return for no change. */
> - if (mode && memcmp(&state->mode, mode, sizeof(*mode)) == 0)
> - return 0;
> -
> - drm_property_blob_put(state->mode_blob);
> - state->mode_blob = NULL;
> -
> - if (mode) {
> - drm_mode_convert_to_umode(&umode, mode);
> - state->mode_blob =
> - drm_property_create_blob(state->crtc->dev,
> - sizeof(umode),
> - &umode);
> - if (IS_ERR(state->mode_blob))
> - return PTR_ERR(state->mode_blob);
> -
> - drm_mode_copy(&state->mode, mode);
> - state->enable = true;
> - DRM_DEBUG_ATOMIC("Set [MODE:%s] for [CRTC:%d:%s] state %p\n",
> - mode->name, crtc->base.id, crtc->name, state);
> - } else {
> - memset(&state->mode, 0, sizeof(state->mode));
> - state->enable = false;
> - DRM_DEBUG_ATOMIC("Set [NOMODE] for [CRTC:%d:%s] state %p\n",
> - crtc->base.id, crtc->name, state);
> - }
> -
> - return 0;
> -}
> -EXPORT_SYMBOL(drm_atomic_set_mode_for_crtc);
> -
> -/**
> - * drm_atomic_set_mode_prop_for_crtc - set mode for CRTC
> - * @state: the CRTC whose incoming state to update
> - * @blob: pointer to blob property to use for mode
> - *
> - * Set a mode (originating from a blob property) on the desired CRTC state.
> - * This function will take a reference on the blob property for the CRTC state,
> - * and release the reference held on the state's existing mode property, if any
> - * was set.
> - *
> - * RETURNS:
> - * Zero on success, error code on failure. Cannot return -EDEADLK.
> - */
> -int drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state *state,
> - struct drm_property_blob *blob)
> -{
> - struct drm_crtc *crtc = state->crtc;
> -
> - if (blob == state->mode_blob)
> - return 0;
> -
> - drm_property_blob_put(state->mode_blob);
> - state->mode_blob = NULL;
> -
> - memset(&state->mode, 0, sizeof(state->mode));
> -
> - if (blob) {
> - int ret;
> -
> - if (blob->length != sizeof(struct drm_mode_modeinfo)) {
> - DRM_DEBUG_ATOMIC("[CRTC:%d:%s] bad mode blob length: %zu\n",
> - crtc->base.id, crtc->name,
> - blob->length);
> - return -EINVAL;
> - }
> -
> - ret = drm_mode_convert_umode(crtc->dev,
> - &state->mode, blob->data);
> - if (ret) {
> - DRM_DEBUG_ATOMIC("[CRTC:%d:%s] invalid mode (ret=%d, status=%s):\n",
> - crtc->base.id, crtc->name,
> - ret, drm_get_mode_status_name(state->mode.status));
> - drm_mode_debug_printmodeline(&state->mode);
> - return -EINVAL;
> - }
> -
> - state->mode_blob = drm_property_blob_get(blob);
> - state->enable = true;
> - DRM_DEBUG_ATOMIC("Set [MODE:%s] for [CRTC:%d:%s] state %p\n",
> - state->mode.name, crtc->base.id, crtc->name,
> - state);
> - } else {
> - state->enable = false;
> - DRM_DEBUG_ATOMIC("Set [NOMODE] for [CRTC:%d:%s] state %p\n",
> - crtc->base.id, crtc->name, state);
> - }
> -
> - return 0;
> -}
> -EXPORT_SYMBOL(drm_atomic_set_mode_prop_for_crtc);
> -
> -static int
> -drm_atomic_replace_property_blob_from_id(struct drm_device *dev,
> - struct drm_property_blob **blob,
> - uint64_t blob_id,
> - ssize_t expected_size,
> - ssize_t expected_elem_size,
> - bool *replaced)
> -{
> - struct drm_property_blob *new_blob = NULL;
> -
> - if (blob_id != 0) {
> - new_blob = drm_property_lookup_blob(dev, blob_id);
> - if (new_blob == NULL)
> - return -EINVAL;
> -
> - if (expected_size > 0 &&
> - new_blob->length != expected_size) {
> - drm_property_blob_put(new_blob);
> - return -EINVAL;
> - }
> - if (expected_elem_size > 0 &&
> - new_blob->length % expected_elem_size != 0) {
> - drm_property_blob_put(new_blob);
> - return -EINVAL;
> - }
> - }
> -
> - *replaced |= drm_property_replace_blob(blob, new_blob);
> - drm_property_blob_put(new_blob);
> -
> - return 0;
> -}
> -
> -static int drm_atomic_crtc_set_property(struct drm_crtc *crtc,
> - struct drm_crtc_state *state, struct drm_property *property,
> - uint64_t val)
> -{
> - struct drm_device *dev = crtc->dev;
> - struct drm_mode_config *config = &dev->mode_config;
> - bool replaced = false;
> - int ret;
> -
> - if (property == config->prop_active)
> - state->active = val;
> - else if (property == config->prop_mode_id) {
> - struct drm_property_blob *mode =
> - drm_property_lookup_blob(dev, val);
> - ret = drm_atomic_set_mode_prop_for_crtc(state, mode);
> - drm_property_blob_put(mode);
> - return ret;
> - } else if (property == config->degamma_lut_property) {
> - ret = drm_atomic_replace_property_blob_from_id(dev,
> - &state->degamma_lut,
> - val,
> - -1, sizeof(struct drm_color_lut),
> - &replaced);
> - state->color_mgmt_changed |= replaced;
> - return ret;
> - } else if (property == config->ctm_property) {
> - ret = drm_atomic_replace_property_blob_from_id(dev,
> - &state->ctm,
> - val,
> - sizeof(struct drm_color_ctm), -1,
> - &replaced);
> - state->color_mgmt_changed |= replaced;
> - return ret;
> - } else if (property == config->gamma_lut_property) {
> - ret = drm_atomic_replace_property_blob_from_id(dev,
> - &state->gamma_lut,
> - val,
> - -1, sizeof(struct drm_color_lut),
> - &replaced);
> - state->color_mgmt_changed |= replaced;
> - return ret;
> - } else if (property == config->prop_out_fence_ptr) {
> - s32 __user *fence_ptr = u64_to_user_ptr(val);
> -
> - if (!fence_ptr)
> - return 0;
> -
> - if (put_user(-1, fence_ptr))
> - return -EFAULT;
> -
> - set_out_fence_for_crtc(state->state, crtc, fence_ptr);
> - } else if (crtc->funcs->atomic_set_property) {
> - return crtc->funcs->atomic_set_property(crtc, state, property, val);
> - } else {
> - DRM_DEBUG_ATOMIC("[CRTC:%d:%s] unknown property [PROP:%d:%s]]\n",
> - crtc->base.id, crtc->name,
> - property->base.id, property->name);
> - return -EINVAL;
> - }
> -
> - return 0;
> -}
> -
> -static int
> -drm_atomic_crtc_get_property(struct drm_crtc *crtc,
> - const struct drm_crtc_state *state,
> - struct drm_property *property, uint64_t *val)
> -{
> - struct drm_device *dev = crtc->dev;
> - struct drm_mode_config *config = &dev->mode_config;
> -
> - if (property == config->prop_active)
> - *val = state->active;
> - else if (property == config->prop_mode_id)
> - *val = (state->mode_blob) ? state->mode_blob->base.id : 0;
> - else if (property == config->degamma_lut_property)
> - *val = (state->degamma_lut) ? state->degamma_lut->base.id : 0;
> - else if (property == config->ctm_property)
> - *val = (state->ctm) ? state->ctm->base.id : 0;
> - else if (property == config->gamma_lut_property)
> - *val = (state->gamma_lut) ? state->gamma_lut->base.id : 0;
> - else if (property == config->prop_out_fence_ptr)
> - *val = 0;
> - else if (crtc->funcs->atomic_get_property)
> - return crtc->funcs->atomic_get_property(crtc, state, property, val);
> - else
> - return -EINVAL;
> -
> - return 0;
> -}
> -
> static int drm_atomic_crtc_check(struct drm_crtc *crtc,
> struct drm_crtc_state *state)
> {
> @@ -761,144 +483,6 @@ drm_atomic_get_plane_state(struct drm_atomic_state *state,
> }
> EXPORT_SYMBOL(drm_atomic_get_plane_state);
>
> -/**
> - * drm_atomic_plane_set_property - set property on plane
> - * @plane: the drm plane to set a property on
> - * @state: the state object to update with the new property value
> - * @property: the property to set
> - * @val: the new property value
> - *
> - * This function handles generic/core properties and calls out to driver's
> - * &drm_plane_funcs.atomic_set_property for driver properties. To ensure
> - * consistent behavior you must call this function rather than the driver hook
> - * directly.
> - *
> - * RETURNS:
> - * Zero on success, error code on failure
> - */
> -static int drm_atomic_plane_set_property(struct drm_plane *plane,
> - struct drm_plane_state *state, struct drm_property *property,
> - uint64_t val)
> -{
> - struct drm_device *dev = plane->dev;
> - struct drm_mode_config *config = &dev->mode_config;
> -
> - if (property == config->prop_fb_id) {
> - struct drm_framebuffer *fb = drm_framebuffer_lookup(dev, NULL, val);
> - drm_atomic_set_fb_for_plane(state, fb);
> - if (fb)
> - drm_framebuffer_put(fb);
> - } else if (property == config->prop_in_fence_fd) {
> - if (state->fence)
> - return -EINVAL;
> -
> - if (U642I64(val) == -1)
> - return 0;
> -
> - state->fence = sync_file_get_fence(val);
> - if (!state->fence)
> - return -EINVAL;
> -
> - } else if (property == config->prop_crtc_id) {
> - struct drm_crtc *crtc = drm_crtc_find(dev, NULL, val);
> - return drm_atomic_set_crtc_for_plane(state, crtc);
> - } else if (property == config->prop_crtc_x) {
> - state->crtc_x = U642I64(val);
> - } else if (property == config->prop_crtc_y) {
> - state->crtc_y = U642I64(val);
> - } else if (property == config->prop_crtc_w) {
> - state->crtc_w = val;
> - } else if (property == config->prop_crtc_h) {
> - state->crtc_h = val;
> - } else if (property == config->prop_src_x) {
> - state->src_x = val;
> - } else if (property == config->prop_src_y) {
> - state->src_y = val;
> - } else if (property == config->prop_src_w) {
> - state->src_w = val;
> - } else if (property == config->prop_src_h) {
> - state->src_h = val;
> - } else if (property == plane->alpha_property) {
> - state->alpha = val;
> - } else if (property == plane->blend_mode_property) {
> - state->pixel_blend_mode = val;
> - } else if (property == plane->rotation_property) {
> - if (!is_power_of_2(val & DRM_MODE_ROTATE_MASK)) {
> - DRM_DEBUG_ATOMIC("[PLANE:%d:%s] bad rotation bitmask: 0x%llx\n",
> - plane->base.id, plane->name, val);
> - return -EINVAL;
> - }
> - state->rotation = val;
> - } else if (property == plane->zpos_property) {
> - state->zpos = val;
> - } else if (property == plane->color_encoding_property) {
> - state->color_encoding = val;
> - } else if (property == plane->color_range_property) {
> - state->color_range = val;
> - } else if (plane->funcs->atomic_set_property) {
> - return plane->funcs->atomic_set_property(plane, state,
> - property, val);
> - } else {
> - DRM_DEBUG_ATOMIC("[PLANE:%d:%s] unknown property [PROP:%d:%s]]\n",
> - plane->base.id, plane->name,
> - property->base.id, property->name);
> - return -EINVAL;
> - }
> -
> - return 0;
> -}
> -
> -static int
> -drm_atomic_plane_get_property(struct drm_plane *plane,
> - const struct drm_plane_state *state,
> - struct drm_property *property, uint64_t *val)
> -{
> - struct drm_device *dev = plane->dev;
> - struct drm_mode_config *config = &dev->mode_config;
> -
> - if (property == config->prop_fb_id) {
> - *val = (state->fb) ? state->fb->base.id : 0;
> - } else if (property == config->prop_in_fence_fd) {
> - *val = -1;
> - } else if (property == config->prop_crtc_id) {
> - *val = (state->crtc) ? state->crtc->base.id : 0;
> - } else if (property == config->prop_crtc_x) {
> - *val = I642U64(state->crtc_x);
> - } else if (property == config->prop_crtc_y) {
> - *val = I642U64(state->crtc_y);
> - } else if (property == config->prop_crtc_w) {
> - *val = state->crtc_w;
> - } else if (property == config->prop_crtc_h) {
> - *val = state->crtc_h;
> - } else if (property == config->prop_src_x) {
> - *val = state->src_x;
> - } else if (property == config->prop_src_y) {
> - *val = state->src_y;
> - } else if (property == config->prop_src_w) {
> - *val = state->src_w;
> - } else if (property == config->prop_src_h) {
> - *val = state->src_h;
> - } else if (property == plane->alpha_property) {
> - *val = state->alpha;
> - } else if (property == plane->blend_mode_property) {
> - *val = state->pixel_blend_mode;
> - } else if (property == plane->rotation_property) {
> - *val = state->rotation;
> - } else if (property == plane->zpos_property) {
> - *val = state->zpos;
> - } else if (property == plane->color_encoding_property) {
> - *val = state->color_encoding;
> - } else if (property == plane->color_range_property) {
> - *val = state->color_range;
> - } else if (plane->funcs->atomic_get_property) {
> - return plane->funcs->atomic_get_property(plane, state, property, val);
> - } else {
> - return -EINVAL;
> - }
> -
> - return 0;
> -}
> -
> static bool
> plane_switching_crtc(struct drm_atomic_state *state,
> struct drm_plane *plane,
> @@ -1238,129 +822,6 @@ drm_atomic_get_connector_state(struct drm_atomic_state *state,
> }
> EXPORT_SYMBOL(drm_atomic_get_connector_state);
>
> -static struct drm_writeback_job *
> -drm_atomic_get_writeback_job(struct drm_connector_state *conn_state)
> -{
> - WARN_ON(conn_state->connector->connector_type != DRM_MODE_CONNECTOR_WRITEBACK);
> -
> - if (!conn_state->writeback_job)
> - conn_state->writeback_job =
> - kzalloc(sizeof(*conn_state->writeback_job), GFP_KERNEL);
> -
> - return conn_state->writeback_job;
> -}
> -
> -static int drm_atomic_set_writeback_fb_for_connector(
> - struct drm_connector_state *conn_state,
> - struct drm_framebuffer *fb)
> -{
> - struct drm_writeback_job *job =
> - drm_atomic_get_writeback_job(conn_state);
> - if (!job)
> - return -ENOMEM;
> -
> - drm_framebuffer_assign(&job->fb, fb);
> -
> - if (fb)
> - DRM_DEBUG_ATOMIC("Set [FB:%d] for connector state %p\n",
> - fb->base.id, conn_state);
> - else
> - DRM_DEBUG_ATOMIC("Set [NOFB] for connector state %p\n",
> - conn_state);
> -
> - return 0;
> -}
> -
> -static int drm_atomic_connector_set_property(struct drm_connector *connector,
> - struct drm_connector_state *state, struct drm_property *property,
> - uint64_t val)
> -{
> - struct drm_device *dev = connector->dev;
> - struct drm_mode_config *config = &dev->mode_config;
> -
> - if (property == config->prop_crtc_id) {
> - struct drm_crtc *crtc = drm_crtc_find(dev, NULL, val);
> - return drm_atomic_set_crtc_for_connector(state, crtc);
> - } else if (property == config->dpms_property) {
> - /* setting DPMS property requires special handling, which
> - * is done in legacy setprop path for us. Disallow (for
> - * now?) atomic writes to DPMS property:
> - */
> - return -EINVAL;
> - } else if (property == config->tv_select_subconnector_property) {
> - state->tv.subconnector = val;
> - } else if (property == config->tv_left_margin_property) {
> - state->tv.margins.left = val;
> - } else if (property == config->tv_right_margin_property) {
> - state->tv.margins.right = val;
> - } else if (property == config->tv_top_margin_property) {
> - state->tv.margins.top = val;
> - } else if (property == config->tv_bottom_margin_property) {
> - state->tv.margins.bottom = val;
> - } else if (property == config->tv_mode_property) {
> - state->tv.mode = val;
> - } else if (property == config->tv_brightness_property) {
> - state->tv.brightness = val;
> - } else if (property == config->tv_contrast_property) {
> - state->tv.contrast = val;
> - } else if (property == config->tv_flicker_reduction_property) {
> - state->tv.flicker_reduction = val;
> - } else if (property == config->tv_overscan_property) {
> - state->tv.overscan = val;
> - } else if (property == config->tv_saturation_property) {
> - state->tv.saturation = val;
> - } else if (property == config->tv_hue_property) {
> - state->tv.hue = val;
> - } else if (property == config->link_status_property) {
> - /* Never downgrade from GOOD to BAD on userspace's request here,
> - * only hw issues can do that.
> - *
> - * For an atomic property the userspace doesn't need to be able
> - * to understand all the properties, but needs to be able to
> - * restore the state it wants on VT switch. So if the userspace
> - * tries to change the link_status from GOOD to BAD, driver
> - * silently rejects it and returns a 0. This prevents userspace
> - * from accidently breaking the display when it restores the
> - * state.
> - */
> - if (state->link_status != DRM_LINK_STATUS_GOOD)
> - state->link_status = val;
> - } else if (property == config->aspect_ratio_property) {
> - state->picture_aspect_ratio = val;
> - } else if (property == config->content_type_property) {
> - state->content_type = val;
> - } else if (property == connector->scaling_mode_property) {
> - state->scaling_mode = val;
> - } else if (property == connector->content_protection_property) {
> - if (val == DRM_MODE_CONTENT_PROTECTION_ENABLED) {
> - DRM_DEBUG_KMS("only drivers can set CP Enabled\n");
> - return -EINVAL;
> - }
> - state->content_protection = val;
> - } else if (property == config->writeback_fb_id_property) {
> - struct drm_framebuffer *fb = drm_framebuffer_lookup(dev, NULL, val);
> - int ret = drm_atomic_set_writeback_fb_for_connector(state, fb);
> - if (fb)
> - drm_framebuffer_put(fb);
> - return ret;
> - } else if (property == config->writeback_out_fence_ptr_property) {
> - s32 __user *fence_ptr = u64_to_user_ptr(val);
> -
> - return set_out_fence_for_connector(state->state, connector,
> - fence_ptr);
> - } else if (connector->funcs->atomic_set_property) {
> - return connector->funcs->atomic_set_property(connector,
> - state, property, val);
> - } else {
> - DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] unknown property [PROP:%d:%s]]\n",
> - connector->base.id, connector->name,
> - property->base.id, property->name);
> - return -EINVAL;
> - }
> -
> - return 0;
> -}
> -
> static void drm_atomic_connector_print_state(struct drm_printer *p,
> const struct drm_connector_state *state)
> {
> @@ -1377,281 +838,6 @@ static void drm_atomic_connector_print_state(struct drm_printer *p,
> connector->funcs->atomic_print_state(p, state);
> }
>
> -static int
> -drm_atomic_connector_get_property(struct drm_connector *connector,
> - const struct drm_connector_state *state,
> - struct drm_property *property, uint64_t *val)
> -{
> - struct drm_device *dev = connector->dev;
> - struct drm_mode_config *config = &dev->mode_config;
> -
> - if (property == config->prop_crtc_id) {
> - *val = (state->crtc) ? state->crtc->base.id : 0;
> - } else if (property == config->dpms_property) {
> - *val = connector->dpms;
> - } else if (property == config->tv_select_subconnector_property) {
> - *val = state->tv.subconnector;
> - } else if (property == config->tv_left_margin_property) {
> - *val = state->tv.margins.left;
> - } else if (property == config->tv_right_margin_property) {
> - *val = state->tv.margins.right;
> - } else if (property == config->tv_top_margin_property) {
> - *val = state->tv.margins.top;
> - } else if (property == config->tv_bottom_margin_property) {
> - *val = state->tv.margins.bottom;
> - } else if (property == config->tv_mode_property) {
> - *val = state->tv.mode;
> - } else if (property == config->tv_brightness_property) {
> - *val = state->tv.brightness;
> - } else if (property == config->tv_contrast_property) {
> - *val = state->tv.contrast;
> - } else if (property == config->tv_flicker_reduction_property) {
> - *val = state->tv.flicker_reduction;
> - } else if (property == config->tv_overscan_property) {
> - *val = state->tv.overscan;
> - } else if (property == config->tv_saturation_property) {
> - *val = state->tv.saturation;
> - } else if (property == config->tv_hue_property) {
> - *val = state->tv.hue;
> - } else if (property == config->link_status_property) {
> - *val = state->link_status;
> - } else if (property == config->aspect_ratio_property) {
> - *val = state->picture_aspect_ratio;
> - } else if (property == config->content_type_property) {
> - *val = state->content_type;
> - } else if (property == connector->scaling_mode_property) {
> - *val = state->scaling_mode;
> - } else if (property == connector->content_protection_property) {
> - *val = state->content_protection;
> - } else if (property == config->writeback_fb_id_property) {
> - /* Writeback framebuffer is one-shot, write and forget */
> - *val = 0;
> - } else if (property == config->writeback_out_fence_ptr_property) {
> - *val = 0;
> - } else if (connector->funcs->atomic_get_property) {
> - return connector->funcs->atomic_get_property(connector,
> - state, property, val);
> - } else {
> - return -EINVAL;
> - }
> -
> - return 0;
> -}
> -
> -int drm_atomic_get_property(struct drm_mode_object *obj,
> - struct drm_property *property, uint64_t *val)
> -{
> - struct drm_device *dev = property->dev;
> - int ret;
> -
> - switch (obj->type) {
> - case DRM_MODE_OBJECT_CONNECTOR: {
> - struct drm_connector *connector = obj_to_connector(obj);
> - WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
> - ret = drm_atomic_connector_get_property(connector,
> - connector->state, property, val);
> - break;
> - }
> - case DRM_MODE_OBJECT_CRTC: {
> - struct drm_crtc *crtc = obj_to_crtc(obj);
> - WARN_ON(!drm_modeset_is_locked(&crtc->mutex));
> - ret = drm_atomic_crtc_get_property(crtc,
> - crtc->state, property, val);
> - break;
> - }
> - case DRM_MODE_OBJECT_PLANE: {
> - struct drm_plane *plane = obj_to_plane(obj);
> - WARN_ON(!drm_modeset_is_locked(&plane->mutex));
> - ret = drm_atomic_plane_get_property(plane,
> - plane->state, property, val);
> - break;
> - }
> - default:
> - ret = -EINVAL;
> - break;
> - }
> -
> - return ret;
> -}
> -
> -/**
> - * drm_atomic_set_crtc_for_plane - set crtc for plane
> - * @plane_state: the plane whose incoming state to update
> - * @crtc: crtc to use for the plane
> - *
> - * Changing the assigned crtc for a plane requires us to grab the lock and state
> - * for the new crtc, as needed. This function takes care of all these details
> - * besides updating the pointer in the state object itself.
> - *
> - * Returns:
> - * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
> - * then the w/w mutex code has detected a deadlock and the entire atomic
> - * sequence must be restarted. All other errors are fatal.
> - */
> -int
> -drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state,
> - struct drm_crtc *crtc)
> -{
> - struct drm_plane *plane = plane_state->plane;
> - struct drm_crtc_state *crtc_state;
> - /* Nothing to do for same crtc*/
> - if (plane_state->crtc == crtc)
> - return 0;
> - if (plane_state->crtc) {
> - crtc_state = drm_atomic_get_crtc_state(plane_state->state,
> - plane_state->crtc);
> - if (WARN_ON(IS_ERR(crtc_state)))
> - return PTR_ERR(crtc_state);
> -
> - crtc_state->plane_mask &= ~drm_plane_mask(plane);
> - }
> -
> - plane_state->crtc = crtc;
> -
> - if (crtc) {
> - crtc_state = drm_atomic_get_crtc_state(plane_state->state,
> - crtc);
> - if (IS_ERR(crtc_state))
> - return PTR_ERR(crtc_state);
> - crtc_state->plane_mask |= drm_plane_mask(plane);
> - }
> -
> - if (crtc)
> - DRM_DEBUG_ATOMIC("Link [PLANE:%d:%s] state %p to [CRTC:%d:%s]\n",
> - plane->base.id, plane->name, plane_state,
> - crtc->base.id, crtc->name);
> - else
> - DRM_DEBUG_ATOMIC("Link [PLANE:%d:%s] state %p to [NOCRTC]\n",
> - plane->base.id, plane->name, plane_state);
> -
> - return 0;
> -}
> -EXPORT_SYMBOL(drm_atomic_set_crtc_for_plane);
> -
> -/**
> - * drm_atomic_set_fb_for_plane - set framebuffer for plane
> - * @plane_state: atomic state object for the plane
> - * @fb: fb to use for the plane
> - *
> - * Changing the assigned framebuffer for a plane requires us to grab a reference
> - * to the new fb and drop the reference to the old fb, if there is one. This
> - * function takes care of all these details besides updating the pointer in the
> - * state object itself.
> - */
> -void
> -drm_atomic_set_fb_for_plane(struct drm_plane_state *plane_state,
> - struct drm_framebuffer *fb)
> -{
> - struct drm_plane *plane = plane_state->plane;
> -
> - if (fb)
> - DRM_DEBUG_ATOMIC("Set [FB:%d] for [PLANE:%d:%s] state %p\n",
> - fb->base.id, plane->base.id, plane->name,
> - plane_state);
> - else
> - DRM_DEBUG_ATOMIC("Set [NOFB] for [PLANE:%d:%s] state %p\n",
> - plane->base.id, plane->name, plane_state);
> -
> - drm_framebuffer_assign(&plane_state->fb, fb);
> -}
> -EXPORT_SYMBOL(drm_atomic_set_fb_for_plane);
> -
> -/**
> - * drm_atomic_set_fence_for_plane - set fence for plane
> - * @plane_state: atomic state object for the plane
> - * @fence: dma_fence to use for the plane
> - *
> - * Helper to setup the plane_state fence in case it is not set yet.
> - * By using this drivers doesn't need to worry if the user choose
> - * implicit or explicit fencing.
> - *
> - * This function will not set the fence to the state if it was set
> - * via explicit fencing interfaces on the atomic ioctl. In that case it will
> - * drop the reference to the fence as we are not storing it anywhere.
> - * Otherwise, if &drm_plane_state.fence is not set this function we just set it
> - * with the received implicit fence. In both cases this function consumes a
> - * reference for @fence.
> - *
> - * This way explicit fencing can be used to overrule implicit fencing, which is
> - * important to make explicit fencing use-cases work: One example is using one
> - * buffer for 2 screens with different refresh rates. Implicit fencing will
> - * clamp rendering to the refresh rate of the slower screen, whereas explicit
> - * fence allows 2 independent render and display loops on a single buffer. If a
> - * driver allows obeys both implicit and explicit fences for plane updates, then
> - * it will break all the benefits of explicit fencing.
> - */
> -void
> -drm_atomic_set_fence_for_plane(struct drm_plane_state *plane_state,
> - struct dma_fence *fence)
> -{
> - if (plane_state->fence) {
> - dma_fence_put(fence);
> - return;
> - }
> -
> - plane_state->fence = fence;
> -}
> -EXPORT_SYMBOL(drm_atomic_set_fence_for_plane);
> -
> -/**
> - * drm_atomic_set_crtc_for_connector - set crtc for connector
> - * @conn_state: atomic state object for the connector
> - * @crtc: crtc to use for the connector
> - *
> - * Changing the assigned crtc for a connector requires us to grab the lock and
> - * state for the new crtc, as needed. This function takes care of all these
> - * details besides updating the pointer in the state object itself.
> - *
> - * Returns:
> - * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
> - * then the w/w mutex code has detected a deadlock and the entire atomic
> - * sequence must be restarted. All other errors are fatal.
> - */
> -int
> -drm_atomic_set_crtc_for_connector(struct drm_connector_state *conn_state,
> - struct drm_crtc *crtc)
> -{
> - struct drm_connector *connector = conn_state->connector;
> - struct drm_crtc_state *crtc_state;
> -
> - if (conn_state->crtc == crtc)
> - return 0;
> -
> - if (conn_state->crtc) {
> - crtc_state = drm_atomic_get_new_crtc_state(conn_state->state,
> - conn_state->crtc);
> -
> - crtc_state->connector_mask &=
> - ~drm_connector_mask(conn_state->connector);
> -
> - drm_connector_put(conn_state->connector);
> - conn_state->crtc = NULL;
> - }
> -
> - if (crtc) {
> - crtc_state = drm_atomic_get_crtc_state(conn_state->state, crtc);
> - if (IS_ERR(crtc_state))
> - return PTR_ERR(crtc_state);
> -
> - crtc_state->connector_mask |=
> - drm_connector_mask(conn_state->connector);
> -
> - drm_connector_get(conn_state->connector);
> - conn_state->crtc = crtc;
> -
> - DRM_DEBUG_ATOMIC("Link [CONNECTOR:%d:%s] state %p to [CRTC:%d:%s]\n",
> - connector->base.id, connector->name,
> - conn_state, crtc->base.id, crtc->name);
> - } else {
> - DRM_DEBUG_ATOMIC("Link [CONNECTOR:%d:%s] state %p to [NOCRTC]\n",
> - connector->base.id, connector->name,
> - conn_state);
> - }
> -
> - return 0;
> -}
> -EXPORT_SYMBOL(drm_atomic_set_crtc_for_connector);
> -
> /**
> * drm_atomic_add_affected_connectors - add connectors for crtc
> * @state: atomic state
> @@ -1916,7 +1102,7 @@ int drm_atomic_nonblocking_commit(struct drm_atomic_state *state)
> }
> EXPORT_SYMBOL(drm_atomic_nonblocking_commit);
>
> -static void drm_atomic_print_state(const struct drm_atomic_state *state)
> +void drm_atomic_print_state(const struct drm_atomic_state *state)
> {
> struct drm_printer p = drm_info_printer(state->dev->dev);
> struct drm_plane *plane;
> @@ -2023,544 +1209,3 @@ int drm_atomic_debugfs_init(struct drm_minor *minor)
> }
> #endif
>
> -/*
> - * The big monster ioctl
> - */
> -
> -static struct drm_pending_vblank_event *create_vblank_event(
> - struct drm_crtc *crtc, uint64_t user_data)
> -{
> - struct drm_pending_vblank_event *e = NULL;
> -
> - e = kzalloc(sizeof *e, GFP_KERNEL);
> - if (!e)
> - return NULL;
> -
> - e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
> - e->event.base.length = sizeof(e->event);
> - e->event.vbl.crtc_id = crtc->base.id;
> - e->event.vbl.user_data = user_data;
> -
> - return e;
> -}
> -
> -int drm_atomic_connector_commit_dpms(struct drm_atomic_state *state,
> - struct drm_connector *connector,
> - int mode)
> -{
> - struct drm_connector *tmp_connector;
> - struct drm_connector_state *new_conn_state;
> - struct drm_crtc *crtc;
> - struct drm_crtc_state *crtc_state;
> - int i, ret, old_mode = connector->dpms;
> - bool active = false;
> -
> - ret = drm_modeset_lock(&state->dev->mode_config.connection_mutex,
> - state->acquire_ctx);
> - if (ret)
> - return ret;
> -
> - if (mode != DRM_MODE_DPMS_ON)
> - mode = DRM_MODE_DPMS_OFF;
> - connector->dpms = mode;
> -
> - crtc = connector->state->crtc;
> - if (!crtc)
> - goto out;
> - ret = drm_atomic_add_affected_connectors(state, crtc);
> - if (ret)
> - goto out;
> -
> - crtc_state = drm_atomic_get_crtc_state(state, crtc);
> - if (IS_ERR(crtc_state)) {
> - ret = PTR_ERR(crtc_state);
> - goto out;
> - }
> -
> - for_each_new_connector_in_state(state, tmp_connector, new_conn_state, i) {
> - if (new_conn_state->crtc != crtc)
> - continue;
> - if (tmp_connector->dpms == DRM_MODE_DPMS_ON) {
> - active = true;
> - break;
> - }
> - }
> -
> - crtc_state->active = active;
> - ret = drm_atomic_commit(state);
> -out:
> - if (ret != 0)
> - connector->dpms = old_mode;
> - return ret;
> -}
> -
> -int drm_atomic_set_property(struct drm_atomic_state *state,
> - struct drm_mode_object *obj,
> - struct drm_property *prop,
> - uint64_t prop_value)
> -{
> - struct drm_mode_object *ref;
> - int ret;
> -
> - if (!drm_property_change_valid_get(prop, prop_value, &ref))
> - return -EINVAL;
> -
> - switch (obj->type) {
> - case DRM_MODE_OBJECT_CONNECTOR: {
> - struct drm_connector *connector = obj_to_connector(obj);
> - struct drm_connector_state *connector_state;
> -
> - connector_state = drm_atomic_get_connector_state(state, connector);
> - if (IS_ERR(connector_state)) {
> - ret = PTR_ERR(connector_state);
> - break;
> - }
> -
> - ret = drm_atomic_connector_set_property(connector,
> - connector_state, prop, prop_value);
> - break;
> - }
> - case DRM_MODE_OBJECT_CRTC: {
> - struct drm_crtc *crtc = obj_to_crtc(obj);
> - struct drm_crtc_state *crtc_state;
> -
> - crtc_state = drm_atomic_get_crtc_state(state, crtc);
> - if (IS_ERR(crtc_state)) {
> - ret = PTR_ERR(crtc_state);
> - break;
> - }
> -
> - ret = drm_atomic_crtc_set_property(crtc,
> - crtc_state, prop, prop_value);
> - break;
> - }
> - case DRM_MODE_OBJECT_PLANE: {
> - struct drm_plane *plane = obj_to_plane(obj);
> - struct drm_plane_state *plane_state;
> -
> - plane_state = drm_atomic_get_plane_state(state, plane);
> - if (IS_ERR(plane_state)) {
> - ret = PTR_ERR(plane_state);
> - break;
> - }
> -
> - ret = drm_atomic_plane_set_property(plane,
> - plane_state, prop, prop_value);
> - break;
> - }
> - default:
> - ret = -EINVAL;
> - break;
> - }
> -
> - drm_property_change_valid_put(prop, ref);
> - return ret;
> -}
> -
> -/**
> - * DOC: explicit fencing properties
> - *
> - * Explicit fencing allows userspace to control the buffer synchronization
> - * between devices. A Fence or a group of fences are transfered to/from
> - * userspace using Sync File fds and there are two DRM properties for that.
> - * IN_FENCE_FD on each DRM Plane to send fences to the kernel and
> - * OUT_FENCE_PTR on each DRM CRTC to receive fences from the kernel.
> - *
> - * As a contrast, with implicit fencing the kernel keeps track of any
> - * ongoing rendering, and automatically ensures that the atomic update waits
> - * for any pending rendering to complete. For shared buffers represented with
> - * a &struct dma_buf this is tracked in &struct reservation_object.
> - * Implicit syncing is how Linux traditionally worked (e.g. DRI2/3 on X.org),
> - * whereas explicit fencing is what Android wants.
> - *
> - * "IN_FENCE_FD”:
> - * Use this property to pass a fence that DRM should wait on before
> - * proceeding with the Atomic Commit request and show the framebuffer for
> - * the plane on the screen. The fence can be either a normal fence or a
> - * merged one, the sync_file framework will handle both cases and use a
> - * fence_array if a merged fence is received. Passing -1 here means no
> - * fences to wait on.
> - *
> - * If the Atomic Commit request has the DRM_MODE_ATOMIC_TEST_ONLY flag
> - * it will only check if the Sync File is a valid one.
> - *
> - * On the driver side the fence is stored on the @fence parameter of
> - * &struct drm_plane_state. Drivers which also support implicit fencing
> - * should set the implicit fence using drm_atomic_set_fence_for_plane(),
> - * to make sure there's consistent behaviour between drivers in precedence
> - * of implicit vs. explicit fencing.
> - *
> - * "OUT_FENCE_PTR”:
> - * Use this property to pass a file descriptor pointer to DRM. Once the
> - * Atomic Commit request call returns OUT_FENCE_PTR will be filled with
> - * the file descriptor number of a Sync File. This Sync File contains the
> - * CRTC fence that will be signaled when all framebuffers present on the
> - * Atomic Commit * request for that given CRTC are scanned out on the
> - * screen.
> - *
> - * The Atomic Commit request fails if a invalid pointer is passed. If the
> - * Atomic Commit request fails for any other reason the out fence fd
> - * returned will be -1. On a Atomic Commit with the
> - * DRM_MODE_ATOMIC_TEST_ONLY flag the out fence will also be set to -1.
> - *
> - * Note that out-fences don't have a special interface to drivers and are
> - * internally represented by a &struct drm_pending_vblank_event in struct
> - * &drm_crtc_state, which is also used by the nonblocking atomic commit
> - * helpers and for the DRM event handling for existing userspace.
> - */
> -
> -struct drm_out_fence_state {
> - s32 __user *out_fence_ptr;
> - struct sync_file *sync_file;
> - int fd;
> -};
> -
> -static int setup_out_fence(struct drm_out_fence_state *fence_state,
> - struct dma_fence *fence)
> -{
> - fence_state->fd = get_unused_fd_flags(O_CLOEXEC);
> - if (fence_state->fd < 0)
> - return fence_state->fd;
> -
> - if (put_user(fence_state->fd, fence_state->out_fence_ptr))
> - return -EFAULT;
> -
> - fence_state->sync_file = sync_file_create(fence);
> - if (!fence_state->sync_file)
> - return -ENOMEM;
> -
> - return 0;
> -}
> -
> -static int prepare_signaling(struct drm_device *dev,
> - struct drm_atomic_state *state,
> - struct drm_mode_atomic *arg,
> - struct drm_file *file_priv,
> - struct drm_out_fence_state **fence_state,
> - unsigned int *num_fences)
> -{
> - struct drm_crtc *crtc;
> - struct drm_crtc_state *crtc_state;
> - struct drm_connector *conn;
> - struct drm_connector_state *conn_state;
> - int i, c = 0, ret;
> -
> - if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY)
> - return 0;
> -
> - for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
> - s32 __user *fence_ptr;
> -
> - fence_ptr = get_out_fence_for_crtc(crtc_state->state, crtc);
> -
> - if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT || fence_ptr) {
> - struct drm_pending_vblank_event *e;
> -
> - e = create_vblank_event(crtc, arg->user_data);
> - if (!e)
> - return -ENOMEM;
> -
> - crtc_state->event = e;
> - }
> -
> - if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT) {
> - struct drm_pending_vblank_event *e = crtc_state->event;
> -
> - if (!file_priv)
> - continue;
> -
> - ret = drm_event_reserve_init(dev, file_priv, &e->base,
> - &e->event.base);
> - if (ret) {
> - kfree(e);
> - crtc_state->event = NULL;
> - return ret;
> - }
> - }
> -
> - if (fence_ptr) {
> - struct dma_fence *fence;
> - struct drm_out_fence_state *f;
> -
> - f = krealloc(*fence_state, sizeof(**fence_state) *
> - (*num_fences + 1), GFP_KERNEL);
> - if (!f)
> - return -ENOMEM;
> -
> - memset(&f[*num_fences], 0, sizeof(*f));
> -
> - f[*num_fences].out_fence_ptr = fence_ptr;
> - *fence_state = f;
> -
> - fence = drm_crtc_create_fence(crtc);
> - if (!fence)
> - return -ENOMEM;
> -
> - ret = setup_out_fence(&f[(*num_fences)++], fence);
> - if (ret) {
> - dma_fence_put(fence);
> - return ret;
> - }
> -
> - crtc_state->event->base.fence = fence;
> - }
> -
> - c++;
> - }
> -
> - for_each_new_connector_in_state(state, conn, conn_state, i) {
> - struct drm_writeback_connector *wb_conn;
> - struct drm_writeback_job *job;
> - struct drm_out_fence_state *f;
> - struct dma_fence *fence;
> - s32 __user *fence_ptr;
> -
> - fence_ptr = get_out_fence_for_connector(state, conn);
> - if (!fence_ptr)
> - continue;
> -
> - job = drm_atomic_get_writeback_job(conn_state);
> - if (!job)
> - return -ENOMEM;
> -
> - f = krealloc(*fence_state, sizeof(**fence_state) *
> - (*num_fences + 1), GFP_KERNEL);
> - if (!f)
> - return -ENOMEM;
> -
> - memset(&f[*num_fences], 0, sizeof(*f));
> -
> - f[*num_fences].out_fence_ptr = fence_ptr;
> - *fence_state = f;
> -
> - wb_conn = drm_connector_to_writeback(conn);
> - fence = drm_writeback_get_out_fence(wb_conn);
> - if (!fence)
> - return -ENOMEM;
> -
> - ret = setup_out_fence(&f[(*num_fences)++], fence);
> - if (ret) {
> - dma_fence_put(fence);
> - return ret;
> - }
> -
> - job->out_fence = fence;
> - }
> -
> - /*
> - * Having this flag means user mode pends on event which will never
> - * reach due to lack of at least one CRTC for signaling
> - */
> - if (c == 0 && (arg->flags & DRM_MODE_PAGE_FLIP_EVENT))
> - return -EINVAL;
> -
> - return 0;
> -}
> -
> -static void complete_signaling(struct drm_device *dev,
> - struct drm_atomic_state *state,
> - struct drm_out_fence_state *fence_state,
> - unsigned int num_fences,
> - bool install_fds)
> -{
> - struct drm_crtc *crtc;
> - struct drm_crtc_state *crtc_state;
> - int i;
> -
> - if (install_fds) {
> - for (i = 0; i < num_fences; i++)
> - fd_install(fence_state[i].fd,
> - fence_state[i].sync_file->file);
> -
> - kfree(fence_state);
> - return;
> - }
> -
> - for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
> - struct drm_pending_vblank_event *event = crtc_state->event;
> - /*
> - * Free the allocated event. drm_atomic_helper_setup_commit
> - * can allocate an event too, so only free it if it's ours
> - * to prevent a double free in drm_atomic_state_clear.
> - */
> - if (event && (event->base.fence || event->base.file_priv)) {
> - drm_event_cancel_free(dev, &event->base);
> - crtc_state->event = NULL;
> - }
> - }
> -
> - if (!fence_state)
> - return;
> -
> - for (i = 0; i < num_fences; i++) {
> - if (fence_state[i].sync_file)
> - fput(fence_state[i].sync_file->file);
> - if (fence_state[i].fd >= 0)
> - put_unused_fd(fence_state[i].fd);
> -
> - /* If this fails log error to the user */
> - if (fence_state[i].out_fence_ptr &&
> - put_user(-1, fence_state[i].out_fence_ptr))
> - DRM_DEBUG_ATOMIC("Couldn't clear out_fence_ptr\n");
> - }
> -
> - kfree(fence_state);
> -}
> -
> -int drm_mode_atomic_ioctl(struct drm_device *dev,
> - void *data, struct drm_file *file_priv)
> -{
> - struct drm_mode_atomic *arg = data;
> - uint32_t __user *objs_ptr = (uint32_t __user *)(unsigned long)(arg->objs_ptr);
> - uint32_t __user *count_props_ptr = (uint32_t __user *)(unsigned long)(arg->count_props_ptr);
> - uint32_t __user *props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
> - uint64_t __user *prop_values_ptr = (uint64_t __user *)(unsigned long)(arg->prop_values_ptr);
> - unsigned int copied_objs, copied_props;
> - struct drm_atomic_state *state;
> - struct drm_modeset_acquire_ctx ctx;
> - struct drm_out_fence_state *fence_state;
> - int ret = 0;
> - unsigned int i, j, num_fences;
> -
> - /* disallow for drivers not supporting atomic: */
> - if (!drm_core_check_feature(dev, DRIVER_ATOMIC))
> - return -EINVAL;
> -
> - /* disallow for userspace that has not enabled atomic cap (even
> - * though this may be a bit overkill, since legacy userspace
> - * wouldn't know how to call this ioctl)
> - */
> - if (!file_priv->atomic)
> - return -EINVAL;
> -
> - if (arg->flags & ~DRM_MODE_ATOMIC_FLAGS)
> - return -EINVAL;
> -
> - if (arg->reserved)
> - return -EINVAL;
> -
> - if ((arg->flags & DRM_MODE_PAGE_FLIP_ASYNC) &&
> - !dev->mode_config.async_page_flip)
> - return -EINVAL;
> -
> - /* can't test and expect an event at the same time. */
> - if ((arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) &&
> - (arg->flags & DRM_MODE_PAGE_FLIP_EVENT))
> - return -EINVAL;
> -
> - drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE);
> -
> - state = drm_atomic_state_alloc(dev);
> - if (!state)
> - return -ENOMEM;
> -
> - state->acquire_ctx = &ctx;
> - state->allow_modeset = !!(arg->flags & DRM_MODE_ATOMIC_ALLOW_MODESET);
> -
> -retry:
> - copied_objs = 0;
> - copied_props = 0;
> - fence_state = NULL;
> - num_fences = 0;
> -
> - for (i = 0; i < arg->count_objs; i++) {
> - uint32_t obj_id, count_props;
> - struct drm_mode_object *obj;
> -
> - if (get_user(obj_id, objs_ptr + copied_objs)) {
> - ret = -EFAULT;
> - goto out;
> - }
> -
> - obj = drm_mode_object_find(dev, file_priv, obj_id, DRM_MODE_OBJECT_ANY);
> - if (!obj) {
> - ret = -ENOENT;
> - goto out;
> - }
> -
> - if (!obj->properties) {
> - drm_mode_object_put(obj);
> - ret = -ENOENT;
> - goto out;
> - }
> -
> - if (get_user(count_props, count_props_ptr + copied_objs)) {
> - drm_mode_object_put(obj);
> - ret = -EFAULT;
> - goto out;
> - }
> -
> - copied_objs++;
> -
> - for (j = 0; j < count_props; j++) {
> - uint32_t prop_id;
> - uint64_t prop_value;
> - struct drm_property *prop;
> -
> - if (get_user(prop_id, props_ptr + copied_props)) {
> - drm_mode_object_put(obj);
> - ret = -EFAULT;
> - goto out;
> - }
> -
> - prop = drm_mode_obj_find_prop_id(obj, prop_id);
> - if (!prop) {
> - drm_mode_object_put(obj);
> - ret = -ENOENT;
> - goto out;
> - }
> -
> - if (copy_from_user(&prop_value,
> - prop_values_ptr + copied_props,
> - sizeof(prop_value))) {
> - drm_mode_object_put(obj);
> - ret = -EFAULT;
> - goto out;
> - }
> -
> - ret = drm_atomic_set_property(state, obj, prop,
> - prop_value);
> - if (ret) {
> - drm_mode_object_put(obj);
> - goto out;
> - }
> -
> - copied_props++;
> - }
> -
> - drm_mode_object_put(obj);
> - }
> -
> - ret = prepare_signaling(dev, state, arg, file_priv, &fence_state,
> - &num_fences);
> - if (ret)
> - goto out;
> -
> - if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) {
> - ret = drm_atomic_check_only(state);
> - } else if (arg->flags & DRM_MODE_ATOMIC_NONBLOCK) {
> - ret = drm_atomic_nonblocking_commit(state);
> - } else {
> - if (unlikely(drm_debug & DRM_UT_STATE))
> - drm_atomic_print_state(state);
> -
> - ret = drm_atomic_commit(state);
> - }
> -
> -out:
> - complete_signaling(dev, state, fence_state, num_fences, !ret);
> -
> - if (ret == -EDEADLK) {
> - drm_atomic_state_clear(state);
> - ret = drm_modeset_backoff(&ctx);
> - if (!ret)
> - goto retry;
> - }
> -
> - drm_atomic_state_put(state);
> -
> - drm_modeset_drop_locks(&ctx);
> - drm_modeset_acquire_fini(&ctx);
> -
> - return ret;
> -}
> diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
> index daa04d29f8cc..8469a7e9afe3 100644
> --- a/drivers/gpu/drm/drm_atomic_helper.c
> +++ b/drivers/gpu/drm/drm_atomic_helper.c
> @@ -27,6 +27,7 @@
>
> #include <drm/drmP.h>
> #include <drm/drm_atomic.h>
> +#include <drm/drm_atomic_uapi.h>
> #include <drm/drm_plane_helper.h>
> #include <drm/drm_crtc_helper.h>
> #include <drm/drm_atomic_helper.h>
> diff --git a/drivers/gpu/drm/drm_atomic_uapi.c b/drivers/gpu/drm/drm_atomic_uapi.c
> new file mode 100644
> index 000000000000..26690a664ec6
> --- /dev/null
> +++ b/drivers/gpu/drm/drm_atomic_uapi.c
> @@ -0,0 +1,1393 @@
> +/*
> + * Copyright (C) 2014 Red Hat
> + * Copyright (C) 2014 Intel Corp.
> + * Copyright (C) 2018 Intel Corp.
> + *
> + * Permission is hereby granted, free of charge, to any person obtaining a
> + * copy of this software and associated documentation files (the "Software"),
> + * to deal in the Software without restriction, including without limitation
> + * the rights to use, copy, modify, merge, publish, distribute, sublicense,
> + * and/or sell copies of the Software, and to permit persons to whom the
> + * Software is furnished to do so, subject to the following conditions:
> + *
> + * The above copyright notice and this permission notice shall be included in
> + * all copies or substantial portions of the Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
> + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
> + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
> + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
> + * OTHER DEALINGS IN THE SOFTWARE.
Maybe start a new file with SPDX identifier?
I like the idea of this split...
Acked-by: Rodrigo Vivi <rodrigo.vivi at intel.com>
> + *
> + * Authors:
> + * Rob Clark <robdclark at gmail.com>
> + * Daniel Vetter <daniel.vetter at ffwll.ch>
> + */
> +
> +#include <drm/drm_atomic_uapi.h>
> +#include <drm/drm_atomic.h>
> +#include <drm/drm_print.h>
> +#include <drm/drm_drv.h>
> +#include <drm/drm_writeback.h>
> +#include <drm/drm_vblank.h>
> +
> +#include <linux/dma-fence.h>
> +#include <linux/uaccess.h>
> +#include <linux/sync_file.h>
> +#include <linux/file.h>
> +
> +#include "drm_crtc_internal.h"
> +
> +/**
> + * DOC: overview
> + *
> + * This file contains the marshalling and demarshalling glue for the atomic UAPI
> + * in all it's form: The monster ATOMIC IOCTL itself, code for GET_PROPERTY and
> + * SET_PROPERTY IOCTls. Plus interface functions for compatibility helpers and
> + * drivers which have special needs to construct their own atomic updates, e.g.
> + * for load detect or similiar.
> + */
> +
> +/**
> + * drm_atomic_set_mode_for_crtc - set mode for CRTC
> + * @state: the CRTC whose incoming state to update
> + * @mode: kernel-internal mode to use for the CRTC, or NULL to disable
> + *
> + * Set a mode (originating from the kernel) on the desired CRTC state and update
> + * the enable property.
> + *
> + * RETURNS:
> + * Zero on success, error code on failure. Cannot return -EDEADLK.
> + */
> +int drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state,
> + const struct drm_display_mode *mode)
> +{
> + struct drm_crtc *crtc = state->crtc;
> + struct drm_mode_modeinfo umode;
> +
> + /* Early return for no change. */
> + if (mode && memcmp(&state->mode, mode, sizeof(*mode)) == 0)
> + return 0;
> +
> + drm_property_blob_put(state->mode_blob);
> + state->mode_blob = NULL;
> +
> + if (mode) {
> + drm_mode_convert_to_umode(&umode, mode);
> + state->mode_blob =
> + drm_property_create_blob(state->crtc->dev,
> + sizeof(umode),
> + &umode);
> + if (IS_ERR(state->mode_blob))
> + return PTR_ERR(state->mode_blob);
> +
> + drm_mode_copy(&state->mode, mode);
> + state->enable = true;
> + DRM_DEBUG_ATOMIC("Set [MODE:%s] for [CRTC:%d:%s] state %p\n",
> + mode->name, crtc->base.id, crtc->name, state);
> + } else {
> + memset(&state->mode, 0, sizeof(state->mode));
> + state->enable = false;
> + DRM_DEBUG_ATOMIC("Set [NOMODE] for [CRTC:%d:%s] state %p\n",
> + crtc->base.id, crtc->name, state);
> + }
> +
> + return 0;
> +}
> +EXPORT_SYMBOL(drm_atomic_set_mode_for_crtc);
> +
> +/**
> + * drm_atomic_set_mode_prop_for_crtc - set mode for CRTC
> + * @state: the CRTC whose incoming state to update
> + * @blob: pointer to blob property to use for mode
> + *
> + * Set a mode (originating from a blob property) on the desired CRTC state.
> + * This function will take a reference on the blob property for the CRTC state,
> + * and release the reference held on the state's existing mode property, if any
> + * was set.
> + *
> + * RETURNS:
> + * Zero on success, error code on failure. Cannot return -EDEADLK.
> + */
> +int drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state *state,
> + struct drm_property_blob *blob)
> +{
> + struct drm_crtc *crtc = state->crtc;
> +
> + if (blob == state->mode_blob)
> + return 0;
> +
> + drm_property_blob_put(state->mode_blob);
> + state->mode_blob = NULL;
> +
> + memset(&state->mode, 0, sizeof(state->mode));
> +
> + if (blob) {
> + int ret;
> +
> + if (blob->length != sizeof(struct drm_mode_modeinfo)) {
> + DRM_DEBUG_ATOMIC("[CRTC:%d:%s] bad mode blob length: %zu\n",
> + crtc->base.id, crtc->name,
> + blob->length);
> + return -EINVAL;
> + }
> +
> + ret = drm_mode_convert_umode(crtc->dev,
> + &state->mode, blob->data);
> + if (ret) {
> + DRM_DEBUG_ATOMIC("[CRTC:%d:%s] invalid mode (ret=%d, status=%s):\n",
> + crtc->base.id, crtc->name,
> + ret, drm_get_mode_status_name(state->mode.status));
> + drm_mode_debug_printmodeline(&state->mode);
> + return -EINVAL;
> + }
> +
> + state->mode_blob = drm_property_blob_get(blob);
> + state->enable = true;
> + DRM_DEBUG_ATOMIC("Set [MODE:%s] for [CRTC:%d:%s] state %p\n",
> + state->mode.name, crtc->base.id, crtc->name,
> + state);
> + } else {
> + state->enable = false;
> + DRM_DEBUG_ATOMIC("Set [NOMODE] for [CRTC:%d:%s] state %p\n",
> + crtc->base.id, crtc->name, state);
> + }
> +
> + return 0;
> +}
> +EXPORT_SYMBOL(drm_atomic_set_mode_prop_for_crtc);
> +
> +/**
> + * drm_atomic_set_crtc_for_plane - set crtc for plane
> + * @plane_state: the plane whose incoming state to update
> + * @crtc: crtc to use for the plane
> + *
> + * Changing the assigned crtc for a plane requires us to grab the lock and state
> + * for the new crtc, as needed. This function takes care of all these details
> + * besides updating the pointer in the state object itself.
> + *
> + * Returns:
> + * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
> + * then the w/w mutex code has detected a deadlock and the entire atomic
> + * sequence must be restarted. All other errors are fatal.
> + */
> +int
> +drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state,
> + struct drm_crtc *crtc)
> +{
> + struct drm_plane *plane = plane_state->plane;
> + struct drm_crtc_state *crtc_state;
> + /* Nothing to do for same crtc*/
> + if (plane_state->crtc == crtc)
> + return 0;
> + if (plane_state->crtc) {
> + crtc_state = drm_atomic_get_crtc_state(plane_state->state,
> + plane_state->crtc);
> + if (WARN_ON(IS_ERR(crtc_state)))
> + return PTR_ERR(crtc_state);
> +
> + crtc_state->plane_mask &= ~drm_plane_mask(plane);
> + }
> +
> + plane_state->crtc = crtc;
> +
> + if (crtc) {
> + crtc_state = drm_atomic_get_crtc_state(plane_state->state,
> + crtc);
> + if (IS_ERR(crtc_state))
> + return PTR_ERR(crtc_state);
> + crtc_state->plane_mask |= drm_plane_mask(plane);
> + }
> +
> + if (crtc)
> + DRM_DEBUG_ATOMIC("Link [PLANE:%d:%s] state %p to [CRTC:%d:%s]\n",
> + plane->base.id, plane->name, plane_state,
> + crtc->base.id, crtc->name);
> + else
> + DRM_DEBUG_ATOMIC("Link [PLANE:%d:%s] state %p to [NOCRTC]\n",
> + plane->base.id, plane->name, plane_state);
> +
> + return 0;
> +}
> +EXPORT_SYMBOL(drm_atomic_set_crtc_for_plane);
> +
> +/**
> + * drm_atomic_set_fb_for_plane - set framebuffer for plane
> + * @plane_state: atomic state object for the plane
> + * @fb: fb to use for the plane
> + *
> + * Changing the assigned framebuffer for a plane requires us to grab a reference
> + * to the new fb and drop the reference to the old fb, if there is one. This
> + * function takes care of all these details besides updating the pointer in the
> + * state object itself.
> + */
> +void
> +drm_atomic_set_fb_for_plane(struct drm_plane_state *plane_state,
> + struct drm_framebuffer *fb)
> +{
> + struct drm_plane *plane = plane_state->plane;
> +
> + if (fb)
> + DRM_DEBUG_ATOMIC("Set [FB:%d] for [PLANE:%d:%s] state %p\n",
> + fb->base.id, plane->base.id, plane->name,
> + plane_state);
> + else
> + DRM_DEBUG_ATOMIC("Set [NOFB] for [PLANE:%d:%s] state %p\n",
> + plane->base.id, plane->name, plane_state);
> +
> + drm_framebuffer_assign(&plane_state->fb, fb);
> +}
> +EXPORT_SYMBOL(drm_atomic_set_fb_for_plane);
> +
> +/**
> + * drm_atomic_set_fence_for_plane - set fence for plane
> + * @plane_state: atomic state object for the plane
> + * @fence: dma_fence to use for the plane
> + *
> + * Helper to setup the plane_state fence in case it is not set yet.
> + * By using this drivers doesn't need to worry if the user choose
> + * implicit or explicit fencing.
> + *
> + * This function will not set the fence to the state if it was set
> + * via explicit fencing interfaces on the atomic ioctl. In that case it will
> + * drop the reference to the fence as we are not storing it anywhere.
> + * Otherwise, if &drm_plane_state.fence is not set this function we just set it
> + * with the received implicit fence. In both cases this function consumes a
> + * reference for @fence.
> + *
> + * This way explicit fencing can be used to overrule implicit fencing, which is
> + * important to make explicit fencing use-cases work: One example is using one
> + * buffer for 2 screens with different refresh rates. Implicit fencing will
> + * clamp rendering to the refresh rate of the slower screen, whereas explicit
> + * fence allows 2 independent render and display loops on a single buffer. If a
> + * driver allows obeys both implicit and explicit fences for plane updates, then
> + * it will break all the benefits of explicit fencing.
> + */
> +void
> +drm_atomic_set_fence_for_plane(struct drm_plane_state *plane_state,
> + struct dma_fence *fence)
> +{
> + if (plane_state->fence) {
> + dma_fence_put(fence);
> + return;
> + }
> +
> + plane_state->fence = fence;
> +}
> +EXPORT_SYMBOL(drm_atomic_set_fence_for_plane);
> +
> +/**
> + * drm_atomic_set_crtc_for_connector - set crtc for connector
> + * @conn_state: atomic state object for the connector
> + * @crtc: crtc to use for the connector
> + *
> + * Changing the assigned crtc for a connector requires us to grab the lock and
> + * state for the new crtc, as needed. This function takes care of all these
> + * details besides updating the pointer in the state object itself.
> + *
> + * Returns:
> + * 0 on success or can fail with -EDEADLK or -ENOMEM. When the error is EDEADLK
> + * then the w/w mutex code has detected a deadlock and the entire atomic
> + * sequence must be restarted. All other errors are fatal.
> + */
> +int
> +drm_atomic_set_crtc_for_connector(struct drm_connector_state *conn_state,
> + struct drm_crtc *crtc)
> +{
> + struct drm_connector *connector = conn_state->connector;
> + struct drm_crtc_state *crtc_state;
> +
> + if (conn_state->crtc == crtc)
> + return 0;
> +
> + if (conn_state->crtc) {
> + crtc_state = drm_atomic_get_new_crtc_state(conn_state->state,
> + conn_state->crtc);
> +
> + crtc_state->connector_mask &=
> + ~drm_connector_mask(conn_state->connector);
> +
> + drm_connector_put(conn_state->connector);
> + conn_state->crtc = NULL;
> + }
> +
> + if (crtc) {
> + crtc_state = drm_atomic_get_crtc_state(conn_state->state, crtc);
> + if (IS_ERR(crtc_state))
> + return PTR_ERR(crtc_state);
> +
> + crtc_state->connector_mask |=
> + drm_connector_mask(conn_state->connector);
> +
> + drm_connector_get(conn_state->connector);
> + conn_state->crtc = crtc;
> +
> + DRM_DEBUG_ATOMIC("Link [CONNECTOR:%d:%s] state %p to [CRTC:%d:%s]\n",
> + connector->base.id, connector->name,
> + conn_state, crtc->base.id, crtc->name);
> + } else {
> + DRM_DEBUG_ATOMIC("Link [CONNECTOR:%d:%s] state %p to [NOCRTC]\n",
> + connector->base.id, connector->name,
> + conn_state);
> + }
> +
> + return 0;
> +}
> +EXPORT_SYMBOL(drm_atomic_set_crtc_for_connector);
> +
> +static void set_out_fence_for_crtc(struct drm_atomic_state *state,
> + struct drm_crtc *crtc, s32 __user *fence_ptr)
> +{
> + state->crtcs[drm_crtc_index(crtc)].out_fence_ptr = fence_ptr;
> +}
> +
> +static s32 __user *get_out_fence_for_crtc(struct drm_atomic_state *state,
> + struct drm_crtc *crtc)
> +{
> + s32 __user *fence_ptr;
> +
> + fence_ptr = state->crtcs[drm_crtc_index(crtc)].out_fence_ptr;
> + state->crtcs[drm_crtc_index(crtc)].out_fence_ptr = NULL;
> +
> + return fence_ptr;
> +}
> +
> +static int set_out_fence_for_connector(struct drm_atomic_state *state,
> + struct drm_connector *connector,
> + s32 __user *fence_ptr)
> +{
> + unsigned int index = drm_connector_index(connector);
> +
> + if (!fence_ptr)
> + return 0;
> +
> + if (put_user(-1, fence_ptr))
> + return -EFAULT;
> +
> + state->connectors[index].out_fence_ptr = fence_ptr;
> +
> + return 0;
> +}
> +
> +static s32 __user *get_out_fence_for_connector(struct drm_atomic_state *state,
> + struct drm_connector *connector)
> +{
> + unsigned int index = drm_connector_index(connector);
> + s32 __user *fence_ptr;
> +
> + fence_ptr = state->connectors[index].out_fence_ptr;
> + state->connectors[index].out_fence_ptr = NULL;
> +
> + return fence_ptr;
> +}
> +
> +static int
> +drm_atomic_replace_property_blob_from_id(struct drm_device *dev,
> + struct drm_property_blob **blob,
> + uint64_t blob_id,
> + ssize_t expected_size,
> + ssize_t expected_elem_size,
> + bool *replaced)
> +{
> + struct drm_property_blob *new_blob = NULL;
> +
> + if (blob_id != 0) {
> + new_blob = drm_property_lookup_blob(dev, blob_id);
> + if (new_blob == NULL)
> + return -EINVAL;
> +
> + if (expected_size > 0 &&
> + new_blob->length != expected_size) {
> + drm_property_blob_put(new_blob);
> + return -EINVAL;
> + }
> + if (expected_elem_size > 0 &&
> + new_blob->length % expected_elem_size != 0) {
> + drm_property_blob_put(new_blob);
> + return -EINVAL;
> + }
> + }
> +
> + *replaced |= drm_property_replace_blob(blob, new_blob);
> + drm_property_blob_put(new_blob);
> +
> + return 0;
> +}
> +
> +static int drm_atomic_crtc_set_property(struct drm_crtc *crtc,
> + struct drm_crtc_state *state, struct drm_property *property,
> + uint64_t val)
> +{
> + struct drm_device *dev = crtc->dev;
> + struct drm_mode_config *config = &dev->mode_config;
> + bool replaced = false;
> + int ret;
> +
> + if (property == config->prop_active)
> + state->active = val;
> + else if (property == config->prop_mode_id) {
> + struct drm_property_blob *mode =
> + drm_property_lookup_blob(dev, val);
> + ret = drm_atomic_set_mode_prop_for_crtc(state, mode);
> + drm_property_blob_put(mode);
> + return ret;
> + } else if (property == config->degamma_lut_property) {
> + ret = drm_atomic_replace_property_blob_from_id(dev,
> + &state->degamma_lut,
> + val,
> + -1, sizeof(struct drm_color_lut),
> + &replaced);
> + state->color_mgmt_changed |= replaced;
> + return ret;
> + } else if (property == config->ctm_property) {
> + ret = drm_atomic_replace_property_blob_from_id(dev,
> + &state->ctm,
> + val,
> + sizeof(struct drm_color_ctm), -1,
> + &replaced);
> + state->color_mgmt_changed |= replaced;
> + return ret;
> + } else if (property == config->gamma_lut_property) {
> + ret = drm_atomic_replace_property_blob_from_id(dev,
> + &state->gamma_lut,
> + val,
> + -1, sizeof(struct drm_color_lut),
> + &replaced);
> + state->color_mgmt_changed |= replaced;
> + return ret;
> + } else if (property == config->prop_out_fence_ptr) {
> + s32 __user *fence_ptr = u64_to_user_ptr(val);
> +
> + if (!fence_ptr)
> + return 0;
> +
> + if (put_user(-1, fence_ptr))
> + return -EFAULT;
> +
> + set_out_fence_for_crtc(state->state, crtc, fence_ptr);
> + } else if (crtc->funcs->atomic_set_property) {
> + return crtc->funcs->atomic_set_property(crtc, state, property, val);
> + } else {
> + DRM_DEBUG_ATOMIC("[CRTC:%d:%s] unknown property [PROP:%d:%s]]\n",
> + crtc->base.id, crtc->name,
> + property->base.id, property->name);
> + return -EINVAL;
> + }
> +
> + return 0;
> +}
> +
> +static int
> +drm_atomic_crtc_get_property(struct drm_crtc *crtc,
> + const struct drm_crtc_state *state,
> + struct drm_property *property, uint64_t *val)
> +{
> + struct drm_device *dev = crtc->dev;
> + struct drm_mode_config *config = &dev->mode_config;
> +
> + if (property == config->prop_active)
> + *val = state->active;
> + else if (property == config->prop_mode_id)
> + *val = (state->mode_blob) ? state->mode_blob->base.id : 0;
> + else if (property == config->degamma_lut_property)
> + *val = (state->degamma_lut) ? state->degamma_lut->base.id : 0;
> + else if (property == config->ctm_property)
> + *val = (state->ctm) ? state->ctm->base.id : 0;
> + else if (property == config->gamma_lut_property)
> + *val = (state->gamma_lut) ? state->gamma_lut->base.id : 0;
> + else if (property == config->prop_out_fence_ptr)
> + *val = 0;
> + else if (crtc->funcs->atomic_get_property)
> + return crtc->funcs->atomic_get_property(crtc, state, property, val);
> + else
> + return -EINVAL;
> +
> + return 0;
> +}
> +
> +static int drm_atomic_plane_set_property(struct drm_plane *plane,
> + struct drm_plane_state *state, struct drm_property *property,
> + uint64_t val)
> +{
> + struct drm_device *dev = plane->dev;
> + struct drm_mode_config *config = &dev->mode_config;
> +
> + if (property == config->prop_fb_id) {
> + struct drm_framebuffer *fb = drm_framebuffer_lookup(dev, NULL, val);
> + drm_atomic_set_fb_for_plane(state, fb);
> + if (fb)
> + drm_framebuffer_put(fb);
> + } else if (property == config->prop_in_fence_fd) {
> + if (state->fence)
> + return -EINVAL;
> +
> + if (U642I64(val) == -1)
> + return 0;
> +
> + state->fence = sync_file_get_fence(val);
> + if (!state->fence)
> + return -EINVAL;
> +
> + } else if (property == config->prop_crtc_id) {
> + struct drm_crtc *crtc = drm_crtc_find(dev, NULL, val);
> + return drm_atomic_set_crtc_for_plane(state, crtc);
> + } else if (property == config->prop_crtc_x) {
> + state->crtc_x = U642I64(val);
> + } else if (property == config->prop_crtc_y) {
> + state->crtc_y = U642I64(val);
> + } else if (property == config->prop_crtc_w) {
> + state->crtc_w = val;
> + } else if (property == config->prop_crtc_h) {
> + state->crtc_h = val;
> + } else if (property == config->prop_src_x) {
> + state->src_x = val;
> + } else if (property == config->prop_src_y) {
> + state->src_y = val;
> + } else if (property == config->prop_src_w) {
> + state->src_w = val;
> + } else if (property == config->prop_src_h) {
> + state->src_h = val;
> + } else if (property == plane->alpha_property) {
> + state->alpha = val;
> + } else if (property == plane->blend_mode_property) {
> + state->pixel_blend_mode = val;
> + } else if (property == plane->rotation_property) {
> + if (!is_power_of_2(val & DRM_MODE_ROTATE_MASK)) {
> + DRM_DEBUG_ATOMIC("[PLANE:%d:%s] bad rotation bitmask: 0x%llx\n",
> + plane->base.id, plane->name, val);
> + return -EINVAL;
> + }
> + state->rotation = val;
> + } else if (property == plane->zpos_property) {
> + state->zpos = val;
> + } else if (property == plane->color_encoding_property) {
> + state->color_encoding = val;
> + } else if (property == plane->color_range_property) {
> + state->color_range = val;
> + } else if (plane->funcs->atomic_set_property) {
> + return plane->funcs->atomic_set_property(plane, state,
> + property, val);
> + } else {
> + DRM_DEBUG_ATOMIC("[PLANE:%d:%s] unknown property [PROP:%d:%s]]\n",
> + plane->base.id, plane->name,
> + property->base.id, property->name);
> + return -EINVAL;
> + }
> +
> + return 0;
> +}
> +
> +static int
> +drm_atomic_plane_get_property(struct drm_plane *plane,
> + const struct drm_plane_state *state,
> + struct drm_property *property, uint64_t *val)
> +{
> + struct drm_device *dev = plane->dev;
> + struct drm_mode_config *config = &dev->mode_config;
> +
> + if (property == config->prop_fb_id) {
> + *val = (state->fb) ? state->fb->base.id : 0;
> + } else if (property == config->prop_in_fence_fd) {
> + *val = -1;
> + } else if (property == config->prop_crtc_id) {
> + *val = (state->crtc) ? state->crtc->base.id : 0;
> + } else if (property == config->prop_crtc_x) {
> + *val = I642U64(state->crtc_x);
> + } else if (property == config->prop_crtc_y) {
> + *val = I642U64(state->crtc_y);
> + } else if (property == config->prop_crtc_w) {
> + *val = state->crtc_w;
> + } else if (property == config->prop_crtc_h) {
> + *val = state->crtc_h;
> + } else if (property == config->prop_src_x) {
> + *val = state->src_x;
> + } else if (property == config->prop_src_y) {
> + *val = state->src_y;
> + } else if (property == config->prop_src_w) {
> + *val = state->src_w;
> + } else if (property == config->prop_src_h) {
> + *val = state->src_h;
> + } else if (property == plane->alpha_property) {
> + *val = state->alpha;
> + } else if (property == plane->blend_mode_property) {
> + *val = state->pixel_blend_mode;
> + } else if (property == plane->rotation_property) {
> + *val = state->rotation;
> + } else if (property == plane->zpos_property) {
> + *val = state->zpos;
> + } else if (property == plane->color_encoding_property) {
> + *val = state->color_encoding;
> + } else if (property == plane->color_range_property) {
> + *val = state->color_range;
> + } else if (plane->funcs->atomic_get_property) {
> + return plane->funcs->atomic_get_property(plane, state, property, val);
> + } else {
> + return -EINVAL;
> + }
> +
> + return 0;
> +}
> +
> +static struct drm_writeback_job *
> +drm_atomic_get_writeback_job(struct drm_connector_state *conn_state)
> +{
> + WARN_ON(conn_state->connector->connector_type != DRM_MODE_CONNECTOR_WRITEBACK);
> +
> + if (!conn_state->writeback_job)
> + conn_state->writeback_job =
> + kzalloc(sizeof(*conn_state->writeback_job), GFP_KERNEL);
> +
> + return conn_state->writeback_job;
> +}
> +
> +static int drm_atomic_set_writeback_fb_for_connector(
> + struct drm_connector_state *conn_state,
> + struct drm_framebuffer *fb)
> +{
> + struct drm_writeback_job *job =
> + drm_atomic_get_writeback_job(conn_state);
> + if (!job)
> + return -ENOMEM;
> +
> + drm_framebuffer_assign(&job->fb, fb);
> +
> + if (fb)
> + DRM_DEBUG_ATOMIC("Set [FB:%d] for connector state %p\n",
> + fb->base.id, conn_state);
> + else
> + DRM_DEBUG_ATOMIC("Set [NOFB] for connector state %p\n",
> + conn_state);
> +
> + return 0;
> +}
> +
> +static int drm_atomic_connector_set_property(struct drm_connector *connector,
> + struct drm_connector_state *state, struct drm_property *property,
> + uint64_t val)
> +{
> + struct drm_device *dev = connector->dev;
> + struct drm_mode_config *config = &dev->mode_config;
> +
> + if (property == config->prop_crtc_id) {
> + struct drm_crtc *crtc = drm_crtc_find(dev, NULL, val);
> + return drm_atomic_set_crtc_for_connector(state, crtc);
> + } else if (property == config->dpms_property) {
> + /* setting DPMS property requires special handling, which
> + * is done in legacy setprop path for us. Disallow (for
> + * now?) atomic writes to DPMS property:
> + */
> + return -EINVAL;
> + } else if (property == config->tv_select_subconnector_property) {
> + state->tv.subconnector = val;
> + } else if (property == config->tv_left_margin_property) {
> + state->tv.margins.left = val;
> + } else if (property == config->tv_right_margin_property) {
> + state->tv.margins.right = val;
> + } else if (property == config->tv_top_margin_property) {
> + state->tv.margins.top = val;
> + } else if (property == config->tv_bottom_margin_property) {
> + state->tv.margins.bottom = val;
> + } else if (property == config->tv_mode_property) {
> + state->tv.mode = val;
> + } else if (property == config->tv_brightness_property) {
> + state->tv.brightness = val;
> + } else if (property == config->tv_contrast_property) {
> + state->tv.contrast = val;
> + } else if (property == config->tv_flicker_reduction_property) {
> + state->tv.flicker_reduction = val;
> + } else if (property == config->tv_overscan_property) {
> + state->tv.overscan = val;
> + } else if (property == config->tv_saturation_property) {
> + state->tv.saturation = val;
> + } else if (property == config->tv_hue_property) {
> + state->tv.hue = val;
> + } else if (property == config->link_status_property) {
> + /* Never downgrade from GOOD to BAD on userspace's request here,
> + * only hw issues can do that.
> + *
> + * For an atomic property the userspace doesn't need to be able
> + * to understand all the properties, but needs to be able to
> + * restore the state it wants on VT switch. So if the userspace
> + * tries to change the link_status from GOOD to BAD, driver
> + * silently rejects it and returns a 0. This prevents userspace
> + * from accidently breaking the display when it restores the
> + * state.
> + */
> + if (state->link_status != DRM_LINK_STATUS_GOOD)
> + state->link_status = val;
> + } else if (property == config->aspect_ratio_property) {
> + state->picture_aspect_ratio = val;
> + } else if (property == config->content_type_property) {
> + state->content_type = val;
> + } else if (property == connector->scaling_mode_property) {
> + state->scaling_mode = val;
> + } else if (property == connector->content_protection_property) {
> + if (val == DRM_MODE_CONTENT_PROTECTION_ENABLED) {
> + DRM_DEBUG_KMS("only drivers can set CP Enabled\n");
> + return -EINVAL;
> + }
> + state->content_protection = val;
> + } else if (property == config->writeback_fb_id_property) {
> + struct drm_framebuffer *fb = drm_framebuffer_lookup(dev, NULL, val);
> + int ret = drm_atomic_set_writeback_fb_for_connector(state, fb);
> + if (fb)
> + drm_framebuffer_put(fb);
> + return ret;
> + } else if (property == config->writeback_out_fence_ptr_property) {
> + s32 __user *fence_ptr = u64_to_user_ptr(val);
> +
> + return set_out_fence_for_connector(state->state, connector,
> + fence_ptr);
> + } else if (connector->funcs->atomic_set_property) {
> + return connector->funcs->atomic_set_property(connector,
> + state, property, val);
> + } else {
> + DRM_DEBUG_ATOMIC("[CONNECTOR:%d:%s] unknown property [PROP:%d:%s]]\n",
> + connector->base.id, connector->name,
> + property->base.id, property->name);
> + return -EINVAL;
> + }
> +
> + return 0;
> +}
> +
> +static int
> +drm_atomic_connector_get_property(struct drm_connector *connector,
> + const struct drm_connector_state *state,
> + struct drm_property *property, uint64_t *val)
> +{
> + struct drm_device *dev = connector->dev;
> + struct drm_mode_config *config = &dev->mode_config;
> +
> + if (property == config->prop_crtc_id) {
> + *val = (state->crtc) ? state->crtc->base.id : 0;
> + } else if (property == config->dpms_property) {
> + *val = connector->dpms;
> + } else if (property == config->tv_select_subconnector_property) {
> + *val = state->tv.subconnector;
> + } else if (property == config->tv_left_margin_property) {
> + *val = state->tv.margins.left;
> + } else if (property == config->tv_right_margin_property) {
> + *val = state->tv.margins.right;
> + } else if (property == config->tv_top_margin_property) {
> + *val = state->tv.margins.top;
> + } else if (property == config->tv_bottom_margin_property) {
> + *val = state->tv.margins.bottom;
> + } else if (property == config->tv_mode_property) {
> + *val = state->tv.mode;
> + } else if (property == config->tv_brightness_property) {
> + *val = state->tv.brightness;
> + } else if (property == config->tv_contrast_property) {
> + *val = state->tv.contrast;
> + } else if (property == config->tv_flicker_reduction_property) {
> + *val = state->tv.flicker_reduction;
> + } else if (property == config->tv_overscan_property) {
> + *val = state->tv.overscan;
> + } else if (property == config->tv_saturation_property) {
> + *val = state->tv.saturation;
> + } else if (property == config->tv_hue_property) {
> + *val = state->tv.hue;
> + } else if (property == config->link_status_property) {
> + *val = state->link_status;
> + } else if (property == config->aspect_ratio_property) {
> + *val = state->picture_aspect_ratio;
> + } else if (property == config->content_type_property) {
> + *val = state->content_type;
> + } else if (property == connector->scaling_mode_property) {
> + *val = state->scaling_mode;
> + } else if (property == connector->content_protection_property) {
> + *val = state->content_protection;
> + } else if (property == config->writeback_fb_id_property) {
> + /* Writeback framebuffer is one-shot, write and forget */
> + *val = 0;
> + } else if (property == config->writeback_out_fence_ptr_property) {
> + *val = 0;
> + } else if (connector->funcs->atomic_get_property) {
> + return connector->funcs->atomic_get_property(connector,
> + state, property, val);
> + } else {
> + return -EINVAL;
> + }
> +
> + return 0;
> +}
> +
> +int drm_atomic_get_property(struct drm_mode_object *obj,
> + struct drm_property *property, uint64_t *val)
> +{
> + struct drm_device *dev = property->dev;
> + int ret;
> +
> + switch (obj->type) {
> + case DRM_MODE_OBJECT_CONNECTOR: {
> + struct drm_connector *connector = obj_to_connector(obj);
> + WARN_ON(!drm_modeset_is_locked(&dev->mode_config.connection_mutex));
> + ret = drm_atomic_connector_get_property(connector,
> + connector->state, property, val);
> + break;
> + }
> + case DRM_MODE_OBJECT_CRTC: {
> + struct drm_crtc *crtc = obj_to_crtc(obj);
> + WARN_ON(!drm_modeset_is_locked(&crtc->mutex));
> + ret = drm_atomic_crtc_get_property(crtc,
> + crtc->state, property, val);
> + break;
> + }
> + case DRM_MODE_OBJECT_PLANE: {
> + struct drm_plane *plane = obj_to_plane(obj);
> + WARN_ON(!drm_modeset_is_locked(&plane->mutex));
> + ret = drm_atomic_plane_get_property(plane,
> + plane->state, property, val);
> + break;
> + }
> + default:
> + ret = -EINVAL;
> + break;
> + }
> +
> + return ret;
> +}
> +
> +/*
> + * The big monster ioctl
> + */
> +
> +static struct drm_pending_vblank_event *create_vblank_event(
> + struct drm_crtc *crtc, uint64_t user_data)
> +{
> + struct drm_pending_vblank_event *e = NULL;
> +
> + e = kzalloc(sizeof *e, GFP_KERNEL);
> + if (!e)
> + return NULL;
> +
> + e->event.base.type = DRM_EVENT_FLIP_COMPLETE;
> + e->event.base.length = sizeof(e->event);
> + e->event.vbl.crtc_id = crtc->base.id;
> + e->event.vbl.user_data = user_data;
> +
> + return e;
> +}
> +
> +int drm_atomic_connector_commit_dpms(struct drm_atomic_state *state,
> + struct drm_connector *connector,
> + int mode)
> +{
> + struct drm_connector *tmp_connector;
> + struct drm_connector_state *new_conn_state;
> + struct drm_crtc *crtc;
> + struct drm_crtc_state *crtc_state;
> + int i, ret, old_mode = connector->dpms;
> + bool active = false;
> +
> + ret = drm_modeset_lock(&state->dev->mode_config.connection_mutex,
> + state->acquire_ctx);
> + if (ret)
> + return ret;
> +
> + if (mode != DRM_MODE_DPMS_ON)
> + mode = DRM_MODE_DPMS_OFF;
> + connector->dpms = mode;
> +
> + crtc = connector->state->crtc;
> + if (!crtc)
> + goto out;
> + ret = drm_atomic_add_affected_connectors(state, crtc);
> + if (ret)
> + goto out;
> +
> + crtc_state = drm_atomic_get_crtc_state(state, crtc);
> + if (IS_ERR(crtc_state)) {
> + ret = PTR_ERR(crtc_state);
> + goto out;
> + }
> +
> + for_each_new_connector_in_state(state, tmp_connector, new_conn_state, i) {
> + if (new_conn_state->crtc != crtc)
> + continue;
> + if (tmp_connector->dpms == DRM_MODE_DPMS_ON) {
> + active = true;
> + break;
> + }
> + }
> +
> + crtc_state->active = active;
> + ret = drm_atomic_commit(state);
> +out:
> + if (ret != 0)
> + connector->dpms = old_mode;
> + return ret;
> +}
> +
> +int drm_atomic_set_property(struct drm_atomic_state *state,
> + struct drm_mode_object *obj,
> + struct drm_property *prop,
> + uint64_t prop_value)
> +{
> + struct drm_mode_object *ref;
> + int ret;
> +
> + if (!drm_property_change_valid_get(prop, prop_value, &ref))
> + return -EINVAL;
> +
> + switch (obj->type) {
> + case DRM_MODE_OBJECT_CONNECTOR: {
> + struct drm_connector *connector = obj_to_connector(obj);
> + struct drm_connector_state *connector_state;
> +
> + connector_state = drm_atomic_get_connector_state(state, connector);
> + if (IS_ERR(connector_state)) {
> + ret = PTR_ERR(connector_state);
> + break;
> + }
> +
> + ret = drm_atomic_connector_set_property(connector,
> + connector_state, prop, prop_value);
> + break;
> + }
> + case DRM_MODE_OBJECT_CRTC: {
> + struct drm_crtc *crtc = obj_to_crtc(obj);
> + struct drm_crtc_state *crtc_state;
> +
> + crtc_state = drm_atomic_get_crtc_state(state, crtc);
> + if (IS_ERR(crtc_state)) {
> + ret = PTR_ERR(crtc_state);
> + break;
> + }
> +
> + ret = drm_atomic_crtc_set_property(crtc,
> + crtc_state, prop, prop_value);
> + break;
> + }
> + case DRM_MODE_OBJECT_PLANE: {
> + struct drm_plane *plane = obj_to_plane(obj);
> + struct drm_plane_state *plane_state;
> +
> + plane_state = drm_atomic_get_plane_state(state, plane);
> + if (IS_ERR(plane_state)) {
> + ret = PTR_ERR(plane_state);
> + break;
> + }
> +
> + ret = drm_atomic_plane_set_property(plane,
> + plane_state, prop, prop_value);
> + break;
> + }
> + default:
> + ret = -EINVAL;
> + break;
> + }
> +
> + drm_property_change_valid_put(prop, ref);
> + return ret;
> +}
> +
> +/**
> + * DOC: explicit fencing properties
> + *
> + * Explicit fencing allows userspace to control the buffer synchronization
> + * between devices. A Fence or a group of fences are transfered to/from
> + * userspace using Sync File fds and there are two DRM properties for that.
> + * IN_FENCE_FD on each DRM Plane to send fences to the kernel and
> + * OUT_FENCE_PTR on each DRM CRTC to receive fences from the kernel.
> + *
> + * As a contrast, with implicit fencing the kernel keeps track of any
> + * ongoing rendering, and automatically ensures that the atomic update waits
> + * for any pending rendering to complete. For shared buffers represented with
> + * a &struct dma_buf this is tracked in &struct reservation_object.
> + * Implicit syncing is how Linux traditionally worked (e.g. DRI2/3 on X.org),
> + * whereas explicit fencing is what Android wants.
> + *
> + * "IN_FENCE_FD”:
> + * Use this property to pass a fence that DRM should wait on before
> + * proceeding with the Atomic Commit request and show the framebuffer for
> + * the plane on the screen. The fence can be either a normal fence or a
> + * merged one, the sync_file framework will handle both cases and use a
> + * fence_array if a merged fence is received. Passing -1 here means no
> + * fences to wait on.
> + *
> + * If the Atomic Commit request has the DRM_MODE_ATOMIC_TEST_ONLY flag
> + * it will only check if the Sync File is a valid one.
> + *
> + * On the driver side the fence is stored on the @fence parameter of
> + * &struct drm_plane_state. Drivers which also support implicit fencing
> + * should set the implicit fence using drm_atomic_set_fence_for_plane(),
> + * to make sure there's consistent behaviour between drivers in precedence
> + * of implicit vs. explicit fencing.
> + *
> + * "OUT_FENCE_PTR”:
> + * Use this property to pass a file descriptor pointer to DRM. Once the
> + * Atomic Commit request call returns OUT_FENCE_PTR will be filled with
> + * the file descriptor number of a Sync File. This Sync File contains the
> + * CRTC fence that will be signaled when all framebuffers present on the
> + * Atomic Commit * request for that given CRTC are scanned out on the
> + * screen.
> + *
> + * The Atomic Commit request fails if a invalid pointer is passed. If the
> + * Atomic Commit request fails for any other reason the out fence fd
> + * returned will be -1. On a Atomic Commit with the
> + * DRM_MODE_ATOMIC_TEST_ONLY flag the out fence will also be set to -1.
> + *
> + * Note that out-fences don't have a special interface to drivers and are
> + * internally represented by a &struct drm_pending_vblank_event in struct
> + * &drm_crtc_state, which is also used by the nonblocking atomic commit
> + * helpers and for the DRM event handling for existing userspace.
> + */
> +
> +struct drm_out_fence_state {
> + s32 __user *out_fence_ptr;
> + struct sync_file *sync_file;
> + int fd;
> +};
> +
> +static int setup_out_fence(struct drm_out_fence_state *fence_state,
> + struct dma_fence *fence)
> +{
> + fence_state->fd = get_unused_fd_flags(O_CLOEXEC);
> + if (fence_state->fd < 0)
> + return fence_state->fd;
> +
> + if (put_user(fence_state->fd, fence_state->out_fence_ptr))
> + return -EFAULT;
> +
> + fence_state->sync_file = sync_file_create(fence);
> + if (!fence_state->sync_file)
> + return -ENOMEM;
> +
> + return 0;
> +}
> +
> +static int prepare_signaling(struct drm_device *dev,
> + struct drm_atomic_state *state,
> + struct drm_mode_atomic *arg,
> + struct drm_file *file_priv,
> + struct drm_out_fence_state **fence_state,
> + unsigned int *num_fences)
> +{
> + struct drm_crtc *crtc;
> + struct drm_crtc_state *crtc_state;
> + struct drm_connector *conn;
> + struct drm_connector_state *conn_state;
> + int i, c = 0, ret;
> +
> + if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY)
> + return 0;
> +
> + for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
> + s32 __user *fence_ptr;
> +
> + fence_ptr = get_out_fence_for_crtc(crtc_state->state, crtc);
> +
> + if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT || fence_ptr) {
> + struct drm_pending_vblank_event *e;
> +
> + e = create_vblank_event(crtc, arg->user_data);
> + if (!e)
> + return -ENOMEM;
> +
> + crtc_state->event = e;
> + }
> +
> + if (arg->flags & DRM_MODE_PAGE_FLIP_EVENT) {
> + struct drm_pending_vblank_event *e = crtc_state->event;
> +
> + if (!file_priv)
> + continue;
> +
> + ret = drm_event_reserve_init(dev, file_priv, &e->base,
> + &e->event.base);
> + if (ret) {
> + kfree(e);
> + crtc_state->event = NULL;
> + return ret;
> + }
> + }
> +
> + if (fence_ptr) {
> + struct dma_fence *fence;
> + struct drm_out_fence_state *f;
> +
> + f = krealloc(*fence_state, sizeof(**fence_state) *
> + (*num_fences + 1), GFP_KERNEL);
> + if (!f)
> + return -ENOMEM;
> +
> + memset(&f[*num_fences], 0, sizeof(*f));
> +
> + f[*num_fences].out_fence_ptr = fence_ptr;
> + *fence_state = f;
> +
> + fence = drm_crtc_create_fence(crtc);
> + if (!fence)
> + return -ENOMEM;
> +
> + ret = setup_out_fence(&f[(*num_fences)++], fence);
> + if (ret) {
> + dma_fence_put(fence);
> + return ret;
> + }
> +
> + crtc_state->event->base.fence = fence;
> + }
> +
> + c++;
> + }
> +
> + for_each_new_connector_in_state(state, conn, conn_state, i) {
> + struct drm_writeback_connector *wb_conn;
> + struct drm_writeback_job *job;
> + struct drm_out_fence_state *f;
> + struct dma_fence *fence;
> + s32 __user *fence_ptr;
> +
> + fence_ptr = get_out_fence_for_connector(state, conn);
> + if (!fence_ptr)
> + continue;
> +
> + job = drm_atomic_get_writeback_job(conn_state);
> + if (!job)
> + return -ENOMEM;
> +
> + f = krealloc(*fence_state, sizeof(**fence_state) *
> + (*num_fences + 1), GFP_KERNEL);
> + if (!f)
> + return -ENOMEM;
> +
> + memset(&f[*num_fences], 0, sizeof(*f));
> +
> + f[*num_fences].out_fence_ptr = fence_ptr;
> + *fence_state = f;
> +
> + wb_conn = drm_connector_to_writeback(conn);
> + fence = drm_writeback_get_out_fence(wb_conn);
> + if (!fence)
> + return -ENOMEM;
> +
> + ret = setup_out_fence(&f[(*num_fences)++], fence);
> + if (ret) {
> + dma_fence_put(fence);
> + return ret;
> + }
> +
> + job->out_fence = fence;
> + }
> +
> + /*
> + * Having this flag means user mode pends on event which will never
> + * reach due to lack of at least one CRTC for signaling
> + */
> + if (c == 0 && (arg->flags & DRM_MODE_PAGE_FLIP_EVENT))
> + return -EINVAL;
> +
> + return 0;
> +}
> +
> +static void complete_signaling(struct drm_device *dev,
> + struct drm_atomic_state *state,
> + struct drm_out_fence_state *fence_state,
> + unsigned int num_fences,
> + bool install_fds)
> +{
> + struct drm_crtc *crtc;
> + struct drm_crtc_state *crtc_state;
> + int i;
> +
> + if (install_fds) {
> + for (i = 0; i < num_fences; i++)
> + fd_install(fence_state[i].fd,
> + fence_state[i].sync_file->file);
> +
> + kfree(fence_state);
> + return;
> + }
> +
> + for_each_new_crtc_in_state(state, crtc, crtc_state, i) {
> + struct drm_pending_vblank_event *event = crtc_state->event;
> + /*
> + * Free the allocated event. drm_atomic_helper_setup_commit
> + * can allocate an event too, so only free it if it's ours
> + * to prevent a double free in drm_atomic_state_clear.
> + */
> + if (event && (event->base.fence || event->base.file_priv)) {
> + drm_event_cancel_free(dev, &event->base);
> + crtc_state->event = NULL;
> + }
> + }
> +
> + if (!fence_state)
> + return;
> +
> + for (i = 0; i < num_fences; i++) {
> + if (fence_state[i].sync_file)
> + fput(fence_state[i].sync_file->file);
> + if (fence_state[i].fd >= 0)
> + put_unused_fd(fence_state[i].fd);
> +
> + /* If this fails log error to the user */
> + if (fence_state[i].out_fence_ptr &&
> + put_user(-1, fence_state[i].out_fence_ptr))
> + DRM_DEBUG_ATOMIC("Couldn't clear out_fence_ptr\n");
> + }
> +
> + kfree(fence_state);
> +}
> +
> +int drm_mode_atomic_ioctl(struct drm_device *dev,
> + void *data, struct drm_file *file_priv)
> +{
> + struct drm_mode_atomic *arg = data;
> + uint32_t __user *objs_ptr = (uint32_t __user *)(unsigned long)(arg->objs_ptr);
> + uint32_t __user *count_props_ptr = (uint32_t __user *)(unsigned long)(arg->count_props_ptr);
> + uint32_t __user *props_ptr = (uint32_t __user *)(unsigned long)(arg->props_ptr);
> + uint64_t __user *prop_values_ptr = (uint64_t __user *)(unsigned long)(arg->prop_values_ptr);
> + unsigned int copied_objs, copied_props;
> + struct drm_atomic_state *state;
> + struct drm_modeset_acquire_ctx ctx;
> + struct drm_out_fence_state *fence_state;
> + int ret = 0;
> + unsigned int i, j, num_fences;
> +
> + /* disallow for drivers not supporting atomic: */
> + if (!drm_core_check_feature(dev, DRIVER_ATOMIC))
> + return -EINVAL;
> +
> + /* disallow for userspace that has not enabled atomic cap (even
> + * though this may be a bit overkill, since legacy userspace
> + * wouldn't know how to call this ioctl)
> + */
> + if (!file_priv->atomic)
> + return -EINVAL;
> +
> + if (arg->flags & ~DRM_MODE_ATOMIC_FLAGS)
> + return -EINVAL;
> +
> + if (arg->reserved)
> + return -EINVAL;
> +
> + if ((arg->flags & DRM_MODE_PAGE_FLIP_ASYNC) &&
> + !dev->mode_config.async_page_flip)
> + return -EINVAL;
> +
> + /* can't test and expect an event at the same time. */
> + if ((arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) &&
> + (arg->flags & DRM_MODE_PAGE_FLIP_EVENT))
> + return -EINVAL;
> +
> + drm_modeset_acquire_init(&ctx, DRM_MODESET_ACQUIRE_INTERRUPTIBLE);
> +
> + state = drm_atomic_state_alloc(dev);
> + if (!state)
> + return -ENOMEM;
> +
> + state->acquire_ctx = &ctx;
> + state->allow_modeset = !!(arg->flags & DRM_MODE_ATOMIC_ALLOW_MODESET);
> +
> +retry:
> + copied_objs = 0;
> + copied_props = 0;
> + fence_state = NULL;
> + num_fences = 0;
> +
> + for (i = 0; i < arg->count_objs; i++) {
> + uint32_t obj_id, count_props;
> + struct drm_mode_object *obj;
> +
> + if (get_user(obj_id, objs_ptr + copied_objs)) {
> + ret = -EFAULT;
> + goto out;
> + }
> +
> + obj = drm_mode_object_find(dev, file_priv, obj_id, DRM_MODE_OBJECT_ANY);
> + if (!obj) {
> + ret = -ENOENT;
> + goto out;
> + }
> +
> + if (!obj->properties) {
> + drm_mode_object_put(obj);
> + ret = -ENOENT;
> + goto out;
> + }
> +
> + if (get_user(count_props, count_props_ptr + copied_objs)) {
> + drm_mode_object_put(obj);
> + ret = -EFAULT;
> + goto out;
> + }
> +
> + copied_objs++;
> +
> + for (j = 0; j < count_props; j++) {
> + uint32_t prop_id;
> + uint64_t prop_value;
> + struct drm_property *prop;
> +
> + if (get_user(prop_id, props_ptr + copied_props)) {
> + drm_mode_object_put(obj);
> + ret = -EFAULT;
> + goto out;
> + }
> +
> + prop = drm_mode_obj_find_prop_id(obj, prop_id);
> + if (!prop) {
> + drm_mode_object_put(obj);
> + ret = -ENOENT;
> + goto out;
> + }
> +
> + if (copy_from_user(&prop_value,
> + prop_values_ptr + copied_props,
> + sizeof(prop_value))) {
> + drm_mode_object_put(obj);
> + ret = -EFAULT;
> + goto out;
> + }
> +
> + ret = drm_atomic_set_property(state, obj, prop,
> + prop_value);
> + if (ret) {
> + drm_mode_object_put(obj);
> + goto out;
> + }
> +
> + copied_props++;
> + }
> +
> + drm_mode_object_put(obj);
> + }
> +
> + ret = prepare_signaling(dev, state, arg, file_priv, &fence_state,
> + &num_fences);
> + if (ret)
> + goto out;
> +
> + if (arg->flags & DRM_MODE_ATOMIC_TEST_ONLY) {
> + ret = drm_atomic_check_only(state);
> + } else if (arg->flags & DRM_MODE_ATOMIC_NONBLOCK) {
> + ret = drm_atomic_nonblocking_commit(state);
> + } else {
> + if (unlikely(drm_debug & DRM_UT_STATE))
> + drm_atomic_print_state(state);
> +
> + ret = drm_atomic_commit(state);
> + }
> +
> +out:
> + complete_signaling(dev, state, fence_state, num_fences, !ret);
> +
> + if (ret == -EDEADLK) {
> + drm_atomic_state_clear(state);
> + ret = drm_modeset_backoff(&ctx);
> + if (!ret)
> + goto retry;
> + }
> +
> + drm_atomic_state_put(state);
> +
> + drm_modeset_drop_locks(&ctx);
> + drm_modeset_acquire_fini(&ctx);
> +
> + return ret;
> +}
> diff --git a/drivers/gpu/drm/drm_crtc_helper.c b/drivers/gpu/drm/drm_crtc_helper.c
> index 5a84c3bc915d..ce75e9506e85 100644
> --- a/drivers/gpu/drm/drm_crtc_helper.c
> +++ b/drivers/gpu/drm/drm_crtc_helper.c
> @@ -35,6 +35,7 @@
>
> #include <drm/drmP.h>
> #include <drm/drm_atomic.h>
> +#include <drm/drm_atomic_uapi.h>
> #include <drm/drm_crtc.h>
> #include <drm/drm_encoder.h>
> #include <drm/drm_fourcc.h>
> diff --git a/drivers/gpu/drm/drm_crtc_internal.h b/drivers/gpu/drm/drm_crtc_internal.h
> index ff5e0d521c21..ede20b55d50c 100644
> --- a/drivers/gpu/drm/drm_crtc_internal.h
> +++ b/drivers/gpu/drm/drm_crtc_internal.h
> @@ -204,6 +204,9 @@ struct drm_minor;
> int drm_atomic_debugfs_init(struct drm_minor *minor);
> #endif
>
> +void drm_atomic_print_state(const struct drm_atomic_state *state);
> +
> +/* drm_atomic_uapi.c */
> int drm_atomic_connector_commit_dpms(struct drm_atomic_state *state,
> struct drm_connector *connector,
> int mode);
> @@ -213,6 +216,8 @@ int drm_atomic_set_property(struct drm_atomic_state *state,
> uint64_t prop_value);
> int drm_atomic_get_property(struct drm_mode_object *obj,
> struct drm_property *property, uint64_t *val);
> +
> +/* IOCTL */
> int drm_mode_atomic_ioctl(struct drm_device *dev,
> void *data, struct drm_file *file_priv);
>
> diff --git a/drivers/gpu/drm/drm_framebuffer.c b/drivers/gpu/drm/drm_framebuffer.c
> index 781af1d42d76..7ca8c77223cb 100644
> --- a/drivers/gpu/drm/drm_framebuffer.c
> +++ b/drivers/gpu/drm/drm_framebuffer.c
> @@ -25,6 +25,7 @@
> #include <drm/drm_auth.h>
> #include <drm/drm_framebuffer.h>
> #include <drm/drm_atomic.h>
> +#include <drm/drm_atomic_uapi.h>
> #include <drm/drm_print.h>
>
> #include "drm_internal.h"
> diff --git a/drivers/gpu/drm/drm_gem_framebuffer_helper.c b/drivers/gpu/drm/drm_gem_framebuffer_helper.c
> index 2810d4131411..7607f9cd6f77 100644
> --- a/drivers/gpu/drm/drm_gem_framebuffer_helper.c
> +++ b/drivers/gpu/drm/drm_gem_framebuffer_helper.c
> @@ -16,6 +16,7 @@
>
> #include <drm/drmP.h>
> #include <drm/drm_atomic.h>
> +#include <drm/drm_atomic_uapi.h>
> #include <drm/drm_fb_helper.h>
> #include <drm/drm_fourcc.h>
> #include <drm/drm_framebuffer.h>
> diff --git a/drivers/gpu/drm/drm_plane_helper.c b/drivers/gpu/drm/drm_plane_helper.c
> index 621f17643bb0..a393756b664e 100644
> --- a/drivers/gpu/drm/drm_plane_helper.c
> +++ b/drivers/gpu/drm/drm_plane_helper.c
> @@ -28,6 +28,7 @@
> #include <drm/drm_plane_helper.h>
> #include <drm/drm_rect.h>
> #include <drm/drm_atomic.h>
> +#include <drm/drm_atomic_uapi.h>
> #include <drm/drm_crtc_helper.h>
> #include <drm/drm_encoder.h>
> #include <drm/drm_atomic_helper.h>
> diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
> index a85a83f31979..85cad16f31ed 100644
> --- a/drivers/gpu/drm/i915/intel_display.c
> +++ b/drivers/gpu/drm/i915/intel_display.c
> @@ -46,6 +46,7 @@
> #include <drm/drm_crtc_helper.h>
> #include <drm/drm_plane_helper.h>
> #include <drm/drm_rect.h>
> +#include <drm/drm_atomic_uapi.h>
> #include <linux/dma_remapping.h>
> #include <linux/reservation.h>
>
> diff --git a/drivers/gpu/drm/msm/msm_atomic.c b/drivers/gpu/drm/msm/msm_atomic.c
> index c1f1779c980f..4bcdeca7479d 100644
> --- a/drivers/gpu/drm/msm/msm_atomic.c
> +++ b/drivers/gpu/drm/msm/msm_atomic.c
> @@ -15,6 +15,8 @@
> * this program. If not, see <http://www.gnu.org/licenses/>.
> */
>
> +#include <drm/drm_atomic_uapi.h>
> +
> #include "msm_drv.h"
> #include "msm_gem.h"
> #include "msm_kms.h"
> diff --git a/drivers/gpu/drm/vc4/vc4_crtc.c b/drivers/gpu/drm/vc4/vc4_crtc.c
> index 0e6a121858d1..3ce136ba8791 100644
> --- a/drivers/gpu/drm/vc4/vc4_crtc.c
> +++ b/drivers/gpu/drm/vc4/vc4_crtc.c
> @@ -35,6 +35,7 @@
> #include <drm/drm_atomic.h>
> #include <drm/drm_atomic_helper.h>
> #include <drm/drm_crtc_helper.h>
> +#include <drm/drm_atomic_uapi.h>
> #include <linux/clk.h>
> #include <drm/drm_fb_cma_helper.h>
> #include <linux/component.h>
> diff --git a/drivers/gpu/drm/vc4/vc4_plane.c b/drivers/gpu/drm/vc4/vc4_plane.c
> index 6c6d37aa512a..9dc3fcbd290b 100644
> --- a/drivers/gpu/drm/vc4/vc4_plane.c
> +++ b/drivers/gpu/drm/vc4/vc4_plane.c
> @@ -22,6 +22,7 @@
> #include <drm/drm_atomic_helper.h>
> #include <drm/drm_fb_cma_helper.h>
> #include <drm/drm_plane_helper.h>
> +#include <drm/drm_atomic_uapi.h>
>
> #include "uapi/drm/vc4_drm.h"
> #include "vc4_drv.h"
> diff --git a/include/drm/drm_atomic.h b/include/drm/drm_atomic.h
> index 66e49ef7d3b5..4aff40886acb 100644
> --- a/include/drm/drm_atomic.h
> +++ b/include/drm/drm_atomic.h
> @@ -584,22 +584,6 @@ __drm_atomic_get_current_plane_state(struct drm_atomic_state *state,
> return plane->state;
> }
>
> -int __must_check
> -drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state,
> - const struct drm_display_mode *mode);
> -int __must_check
> -drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state *state,
> - struct drm_property_blob *blob);
> -int __must_check
> -drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state,
> - struct drm_crtc *crtc);
> -void drm_atomic_set_fb_for_plane(struct drm_plane_state *plane_state,
> - struct drm_framebuffer *fb);
> -void drm_atomic_set_fence_for_plane(struct drm_plane_state *plane_state,
> - struct dma_fence *fence);
> -int __must_check
> -drm_atomic_set_crtc_for_connector(struct drm_connector_state *conn_state,
> - struct drm_crtc *crtc);
> int __must_check
> drm_atomic_add_affected_connectors(struct drm_atomic_state *state,
> struct drm_crtc *crtc);
> diff --git a/include/drm/drm_atomic_uapi.h b/include/drm/drm_atomic_uapi.h
> new file mode 100644
> index 000000000000..8cec52ad1277
> --- /dev/null
> +++ b/include/drm/drm_atomic_uapi.h
> @@ -0,0 +1,58 @@
> +/*
> + * Copyright (C) 2014 Red Hat
> + * Copyright (C) 2014 Intel Corp.
> + * Copyright (C) 2018 Intel Corp.
> + *
> + * Permission is hereby granted, free of charge, to any person obtaining a
> + * copy of this software and associated documentation files (the "Software"),
> + * to deal in the Software without restriction, including without limitation
> + * the rights to use, copy, modify, merge, publish, distribute, sublicense,
> + * and/or sell copies of the Software, and to permit persons to whom the
> + * Software is furnished to do so, subject to the following conditions:
> + *
> + * The above copyright notice and this permission notice shall be included in
> + * all copies or substantial portions of the Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
> + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
> + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
> + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
> + * OTHER DEALINGS IN THE SOFTWARE.
> + *
> + * Authors:
> + * Rob Clark <robdclark at gmail.com>
> + * Daniel Vetter <daniel.vetter at ffwll.ch>
> + */
> +
> +#ifndef DRM_ATOMIC_UAPI_H_
> +#define DRM_ATOMIC_UAPI_H_
> +
> +struct drm_crtc_state;
> +struct drm_display_mode;
> +struct drm_property_blob;
> +struct drm_plane_state;
> +struct drm_crtc;
> +struct drm_connector_state;
> +struct dma_fence;
> +struct drm_framebuffer;
> +
> +int __must_check
> +drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state,
> + const struct drm_display_mode *mode);
> +int __must_check
> +drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state *state,
> + struct drm_property_blob *blob);
> +int __must_check
> +drm_atomic_set_crtc_for_plane(struct drm_plane_state *plane_state,
> + struct drm_crtc *crtc);
> +void drm_atomic_set_fb_for_plane(struct drm_plane_state *plane_state,
> + struct drm_framebuffer *fb);
> +void drm_atomic_set_fence_for_plane(struct drm_plane_state *plane_state,
> + struct dma_fence *fence);
> +int __must_check
> +drm_atomic_set_crtc_for_connector(struct drm_connector_state *conn_state,
> + struct drm_crtc *crtc);
> +
> +#endif
> --
> 2.18.0
>
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