Currently framebuffer checks happen directly in
drm_atomic_plane_check(). Move these checks into their own helper
method.
Signed-off-by: Jessica Zhang <[email protected]>
---
drivers/gpu/drm/drm_atomic.c | 130 ++++++++++++++++++++++++-------------------
1 file changed, 74 insertions(+), 56 deletions(-)
diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index b4c6ffc438da..404b984d2d9f 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -580,6 +580,76 @@ plane_switching_crtc(const struct drm_plane_state *old_plane_state,
return true;
}
+static int drm_atomic_check_fb(const struct drm_plane_state *state)
+{
+ struct drm_plane *plane = state->plane;
+ const struct drm_framebuffer *fb = state->fb;
+ struct drm_mode_rect *clips;
+
+ uint32_t num_clips;
+ unsigned int fb_width, fb_height;
+ int ret;
+
+ /* Check whether this plane supports the fb pixel format. */
+ ret = drm_plane_check_pixel_format(plane, fb->format->format,
+ fb->modifier);
+
+ if (ret) {
+ drm_dbg_atomic(plane->dev,
+ "[PLANE:%d:%s] invalid pixel format %p4cc, modifier 0x%llx\n",
+ plane->base.id, plane->name,
+ &fb->format->format, fb->modifier);
+ return ret;
+ }
+
+ fb_width = fb->width << 16;
+ fb_height = fb->height << 16;
+
+ /* Make sure source coordinates are inside the fb. */
+ if (state->src_w > fb_width ||
+ state->src_x > fb_width - state->src_w ||
+ state->src_h > fb_height ||
+ state->src_y > fb_height - state->src_h) {
+ drm_dbg_atomic(plane->dev,
+ "[PLANE:%d:%s] invalid source coordinates "
+ "%u.%06ux%u.%06u+%u.%06u+%u.%06u (fb %ux%u)\n",
+ plane->base.id, plane->name,
+ state->src_w >> 16,
+ ((state->src_w & 0xffff) * 15625) >> 10,
+ state->src_h >> 16,
+ ((state->src_h & 0xffff) * 15625) >> 10,
+ state->src_x >> 16,
+ ((state->src_x & 0xffff) * 15625) >> 10,
+ state->src_y >> 16,
+ ((state->src_y & 0xffff) * 15625) >> 10,
+ fb->width, fb->height);
+ return -ENOSPC;
+ }
+
+ clips = __drm_plane_get_damage_clips(state);
+ num_clips = drm_plane_get_damage_clips_count(state);
+
+ /* Make sure damage clips are valid and inside the fb. */
+ while (num_clips > 0) {
+ if (clips->x1 >= clips->x2 ||
+ clips->y1 >= clips->y2 ||
+ clips->x1 < 0 ||
+ clips->y1 < 0 ||
+ clips->x2 > fb_width ||
+ clips->y2 > fb_height) {
+ drm_dbg_atomic(plane->dev,
+ "[PLANE:%d:%s] invalid damage clip %d %d %d %d\n",
+ plane->base.id, plane->name, clips->x1,
+ clips->y1, clips->x2, clips->y2);
+ return -EINVAL;
+ }
+ clips++;
+ num_clips--;
+ }
+
+ return 0;
+}
+
/**
* drm_atomic_plane_check - check plane state
* @old_plane_state: old plane state to check
@@ -596,9 +666,6 @@ static int drm_atomic_plane_check(const struct drm_plane_state *old_plane_state,
struct drm_plane *plane = new_plane_state->plane;
struct drm_crtc *crtc = new_plane_state->crtc;
const struct drm_framebuffer *fb = new_plane_state->fb;
- unsigned int fb_width, fb_height;
- struct drm_mode_rect *clips;
- uint32_t num_clips;
int ret;
/* either *both* CRTC and FB must be set, or neither */
@@ -625,17 +692,6 @@ static int drm_atomic_plane_check(const struct drm_plane_state *old_plane_state,
return -EINVAL;
}
- /* Check whether this plane supports the fb pixel format. */
- ret = drm_plane_check_pixel_format(plane, fb->format->format,
- fb->modifier);
- if (ret) {
- drm_dbg_atomic(plane->dev,
- "[PLANE:%d:%s] invalid pixel format %p4cc, modifier 0x%llx\n",
- plane->base.id, plane->name,
- &fb->format->format, fb->modifier);
- return ret;
- }
-
/* Give drivers some help against integer overflows */
if (new_plane_state->crtc_w > INT_MAX ||
new_plane_state->crtc_x > INT_MAX - (int32_t) new_plane_state->crtc_w ||
@@ -649,49 +705,11 @@ static int drm_atomic_plane_check(const struct drm_plane_state *old_plane_state,
return -ERANGE;
}
- fb_width = fb->width << 16;
- fb_height = fb->height << 16;
- /* Make sure source coordinates are inside the fb. */
- if (new_plane_state->src_w > fb_width ||
- new_plane_state->src_x > fb_width - new_plane_state->src_w ||
- new_plane_state->src_h > fb_height ||
- new_plane_state->src_y > fb_height - new_plane_state->src_h) {
- drm_dbg_atomic(plane->dev,
- "[PLANE:%d:%s] invalid source coordinates "
- "%u.%06ux%u.%06u+%u.%06u+%u.%06u (fb %ux%u)\n",
- plane->base.id, plane->name,
- new_plane_state->src_w >> 16,
- ((new_plane_state->src_w & 0xffff) * 15625) >> 10,
- new_plane_state->src_h >> 16,
- ((new_plane_state->src_h & 0xffff) * 15625) >> 10,
- new_plane_state->src_x >> 16,
- ((new_plane_state->src_x & 0xffff) * 15625) >> 10,
- new_plane_state->src_y >> 16,
- ((new_plane_state->src_y & 0xffff) * 15625) >> 10,
- fb->width, fb->height);
- return -ENOSPC;
- }
-
- clips = __drm_plane_get_damage_clips(new_plane_state);
- num_clips = drm_plane_get_damage_clips_count(new_plane_state);
-
- /* Make sure damage clips are valid and inside the fb. */
- while (num_clips > 0) {
- if (clips->x1 >= clips->x2 ||
- clips->y1 >= clips->y2 ||
- clips->x1 < 0 ||
- clips->y1 < 0 ||
- clips->x2 > fb_width ||
- clips->y2 > fb_height) {
- drm_dbg_atomic(plane->dev,
- "[PLANE:%d:%s] invalid damage clip %d %d %d %d\n",
- plane->base.id, plane->name, clips->x1,
- clips->y1, clips->x2, clips->y2);
- return -EINVAL;
- }
- clips++;
- num_clips--;
+ if (fb) {
+ ret = drm_atomic_check_fb(new_plane_state);
+ if (ret)
+ return ret;
}
if (plane_switching_crtc(old_plane_state, new_plane_state)) {
--
2.41.0
On 30/06/2023 03:25, Jessica Zhang wrote:
> Currently framebuffer checks happen directly in
> drm_atomic_plane_check(). Move these checks into their own helper
> method.
>
> Signed-off-by: Jessica Zhang <[email protected]>
> ---
> drivers/gpu/drm/drm_atomic.c | 130 ++++++++++++++++++++++++-------------------
> 1 file changed, 74 insertions(+), 56 deletions(-)
>
> diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
> index b4c6ffc438da..404b984d2d9f 100644
> --- a/drivers/gpu/drm/drm_atomic.c
> +++ b/drivers/gpu/drm/drm_atomic.c
> @@ -580,6 +580,76 @@ plane_switching_crtc(const struct drm_plane_state *old_plane_state,
> return true;
> }
>
> +static int drm_atomic_check_fb(const struct drm_plane_state *state)
> +{
> + struct drm_plane *plane = state->plane;
> + const struct drm_framebuffer *fb = state->fb;
> + struct drm_mode_rect *clips;
> +
> + uint32_t num_clips;
> + unsigned int fb_width, fb_height;
> + int ret;
> +
> + /* Check whether this plane supports the fb pixel format. */
> + ret = drm_plane_check_pixel_format(plane, fb->format->format,
> + fb->modifier);
> +
> + if (ret) {
> + drm_dbg_atomic(plane->dev,
> + "[PLANE:%d:%s] invalid pixel format %p4cc, modifier 0x%llx\n",
> + plane->base.id, plane->name,
> + &fb->format->format, fb->modifier);
> + return ret;
> + }
> +
> + fb_width = fb->width << 16;
> + fb_height = fb->height << 16;
> +
> + /* Make sure source coordinates are inside the fb. */
> + if (state->src_w > fb_width ||
> + state->src_x > fb_width - state->src_w ||
> + state->src_h > fb_height ||
> + state->src_y > fb_height - state->src_h) {
> + drm_dbg_atomic(plane->dev,
> + "[PLANE:%d:%s] invalid source coordinates "
> + "%u.%06ux%u.%06u+%u.%06u+%u.%06u (fb %ux%u)\n",
> + plane->base.id, plane->name,
> + state->src_w >> 16,
> + ((state->src_w & 0xffff) * 15625) >> 10,
> + state->src_h >> 16,
> + ((state->src_h & 0xffff) * 15625) >> 10,
> + state->src_x >> 16,
> + ((state->src_x & 0xffff) * 15625) >> 10,
> + state->src_y >> 16,
> + ((state->src_y & 0xffff) * 15625) >> 10,
> + fb->width, fb->height);
> + return -ENOSPC;
> + }
> +
> + clips = __drm_plane_get_damage_clips(state);
> + num_clips = drm_plane_get_damage_clips_count(state);
> +
> + /* Make sure damage clips are valid and inside the fb. */
> + while (num_clips > 0) {
> + if (clips->x1 >= clips->x2 ||
> + clips->y1 >= clips->y2 ||
> + clips->x1 < 0 ||
> + clips->y1 < 0 ||
> + clips->x2 > fb_width ||
> + clips->y2 > fb_height) {
> + drm_dbg_atomic(plane->dev,
> + "[PLANE:%d:%s] invalid damage clip %d %d %d %d\n",
> + plane->base.id, plane->name, clips->x1,
> + clips->y1, clips->x2, clips->y2);
> + return -EINVAL;
> + }
> + clips++;
> + num_clips--;
> + }
> +
> + return 0;
> +}
> +
> /**
> * drm_atomic_plane_check - check plane state
> * @old_plane_state: old plane state to check
> @@ -596,9 +666,6 @@ static int drm_atomic_plane_check(const struct drm_plane_state *old_plane_state,
> struct drm_plane *plane = new_plane_state->plane;
> struct drm_crtc *crtc = new_plane_state->crtc;
> const struct drm_framebuffer *fb = new_plane_state->fb;
> - unsigned int fb_width, fb_height;
> - struct drm_mode_rect *clips;
> - uint32_t num_clips;
> int ret;
>
> /* either *both* CRTC and FB must be set, or neither */
> @@ -625,17 +692,6 @@ static int drm_atomic_plane_check(const struct drm_plane_state *old_plane_state,
> return -EINVAL;
> }
>
> - /* Check whether this plane supports the fb pixel format. */
> - ret = drm_plane_check_pixel_format(plane, fb->format->format,
> - fb->modifier);
> - if (ret) {
> - drm_dbg_atomic(plane->dev,
> - "[PLANE:%d:%s] invalid pixel format %p4cc, modifier 0x%llx\n",
> - plane->base.id, plane->name,
> - &fb->format->format, fb->modifier);
> - return ret;
> - }
> -
> /* Give drivers some help against integer overflows */
> if (new_plane_state->crtc_w > INT_MAX ||
> new_plane_state->crtc_x > INT_MAX - (int32_t) new_plane_state->crtc_w ||
> @@ -649,49 +705,11 @@ static int drm_atomic_plane_check(const struct drm_plane_state *old_plane_state,
> return -ERANGE;
> }
>
> - fb_width = fb->width << 16;
> - fb_height = fb->height << 16;
>
> - /* Make sure source coordinates are inside the fb. */
> - if (new_plane_state->src_w > fb_width ||
> - new_plane_state->src_x > fb_width - new_plane_state->src_w ||
> - new_plane_state->src_h > fb_height ||
> - new_plane_state->src_y > fb_height - new_plane_state->src_h) {
> - drm_dbg_atomic(plane->dev,
> - "[PLANE:%d:%s] invalid source coordinates "
> - "%u.%06ux%u.%06u+%u.%06u+%u.%06u (fb %ux%u)\n",
> - plane->base.id, plane->name,
> - new_plane_state->src_w >> 16,
> - ((new_plane_state->src_w & 0xffff) * 15625) >> 10,
> - new_plane_state->src_h >> 16,
> - ((new_plane_state->src_h & 0xffff) * 15625) >> 10,
> - new_plane_state->src_x >> 16,
> - ((new_plane_state->src_x & 0xffff) * 15625) >> 10,
> - new_plane_state->src_y >> 16,
> - ((new_plane_state->src_y & 0xffff) * 15625) >> 10,
> - fb->width, fb->height);
> - return -ENOSPC;
> - }
> -
> - clips = __drm_plane_get_damage_clips(new_plane_state);
> - num_clips = drm_plane_get_damage_clips_count(new_plane_state);
> -
> - /* Make sure damage clips are valid and inside the fb. */
> - while (num_clips > 0) {
> - if (clips->x1 >= clips->x2 ||
> - clips->y1 >= clips->y2 ||
> - clips->x1 < 0 ||
> - clips->y1 < 0 ||
> - clips->x2 > fb_width ||
> - clips->y2 > fb_height) {
> - drm_dbg_atomic(plane->dev,
> - "[PLANE:%d:%s] invalid damage clip %d %d %d %d\n",
> - plane->base.id, plane->name, clips->x1,
> - clips->y1, clips->x2, clips->y2);
> - return -EINVAL;
> - }
> - clips++;
> - num_clips--;
> + if (fb) {
This doesn't only move code, but also changes semantics, making the
checks optional if no FB is provided. Consider moving the condition to
the next patch. Otherwise LGTM.
> + ret = drm_atomic_check_fb(new_plane_state);
> + if (ret)
> + return ret;
> }
>
> if (plane_switching_crtc(old_plane_state, new_plane_state)) {
>
--
With best wishes
Dmitry
On 6/29/2023 5:43 PM, Dmitry Baryshkov wrote:
> On 30/06/2023 03:25, Jessica Zhang wrote:
>> Currently framebuffer checks happen directly in
>> drm_atomic_plane_check(). Move these checks into their own helper
>> method.
>>
>> Signed-off-by: Jessica Zhang <[email protected]>
>> ---
>> drivers/gpu/drm/drm_atomic.c | 130
>> ++++++++++++++++++++++++-------------------
>> 1 file changed, 74 insertions(+), 56 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
>> index b4c6ffc438da..404b984d2d9f 100644
>> --- a/drivers/gpu/drm/drm_atomic.c
>> +++ b/drivers/gpu/drm/drm_atomic.c
>> @@ -580,6 +580,76 @@ plane_switching_crtc(const struct drm_plane_state
>> *old_plane_state,
>> return true;
>> }
>> +static int drm_atomic_check_fb(const struct drm_plane_state *state)
>> +{
>> + struct drm_plane *plane = state->plane;
>> + const struct drm_framebuffer *fb = state->fb;
>> + struct drm_mode_rect *clips;
>> +
>> + uint32_t num_clips;
>> + unsigned int fb_width, fb_height;
>> + int ret;
>> +
>> + /* Check whether this plane supports the fb pixel format. */
>> + ret = drm_plane_check_pixel_format(plane, fb->format->format,
>> + fb->modifier);
>> +
>> + if (ret) {
>> + drm_dbg_atomic(plane->dev,
>> + "[PLANE:%d:%s] invalid pixel format %p4cc,
>> modifier 0x%llx\n",
>> + plane->base.id, plane->name,
>> + &fb->format->format, fb->modifier);
>> + return ret;
>> + }
>> +
>> + fb_width = fb->width << 16;
>> + fb_height = fb->height << 16;
>> +
>> + /* Make sure source coordinates are inside the fb. */
>> + if (state->src_w > fb_width ||
>> + state->src_x > fb_width - state->src_w ||
>> + state->src_h > fb_height ||
>> + state->src_y > fb_height - state->src_h) {
>> + drm_dbg_atomic(plane->dev,
>> + "[PLANE:%d:%s] invalid source coordinates "
>> + "%u.%06ux%u.%06u+%u.%06u+%u.%06u (fb %ux%u)\n",
>> + plane->base.id, plane->name,
>> + state->src_w >> 16,
>> + ((state->src_w & 0xffff) * 15625) >> 10,
>> + state->src_h >> 16,
>> + ((state->src_h & 0xffff) * 15625) >> 10,
>> + state->src_x >> 16,
>> + ((state->src_x & 0xffff) * 15625) >> 10,
>> + state->src_y >> 16,
>> + ((state->src_y & 0xffff) * 15625) >> 10,
>> + fb->width, fb->height);
>> + return -ENOSPC;
>> + }
>> +
>> + clips = __drm_plane_get_damage_clips(state);
>> + num_clips = drm_plane_get_damage_clips_count(state);
>> +
>> + /* Make sure damage clips are valid and inside the fb. */
>> + while (num_clips > 0) {
>> + if (clips->x1 >= clips->x2 ||
>> + clips->y1 >= clips->y2 ||
>> + clips->x1 < 0 ||
>> + clips->y1 < 0 ||
>> + clips->x2 > fb_width ||
>> + clips->y2 > fb_height) {
>> + drm_dbg_atomic(plane->dev,
>> + "[PLANE:%d:%s] invalid damage clip %d %d %d
>> %d\n",
>> + plane->base.id, plane->name, clips->x1,
>> + clips->y1, clips->x2, clips->y2);
>> + return -EINVAL;
>> + }
>> + clips++;
>> + num_clips--;
>> + }
>> +
>> + return 0;
>> +}
>> +
>> /**
>> * drm_atomic_plane_check - check plane state
>> * @old_plane_state: old plane state to check
>> @@ -596,9 +666,6 @@ static int drm_atomic_plane_check(const struct
>> drm_plane_state *old_plane_state,
>> struct drm_plane *plane = new_plane_state->plane;
>> struct drm_crtc *crtc = new_plane_state->crtc;
>> const struct drm_framebuffer *fb = new_plane_state->fb;
>> - unsigned int fb_width, fb_height;
>> - struct drm_mode_rect *clips;
>> - uint32_t num_clips;
>> int ret;
>> /* either *both* CRTC and FB must be set, or neither */
>> @@ -625,17 +692,6 @@ static int drm_atomic_plane_check(const struct
>> drm_plane_state *old_plane_state,
>> return -EINVAL;
>> }
>> - /* Check whether this plane supports the fb pixel format. */
>> - ret = drm_plane_check_pixel_format(plane, fb->format->format,
>> - fb->modifier);
>> - if (ret) {
>> - drm_dbg_atomic(plane->dev,
>> - "[PLANE:%d:%s] invalid pixel format %p4cc,
>> modifier 0x%llx\n",
>> - plane->base.id, plane->name,
>> - &fb->format->format, fb->modifier);
>> - return ret;
>> - }
>> -
>> /* Give drivers some help against integer overflows */
>> if (new_plane_state->crtc_w > INT_MAX ||
>> new_plane_state->crtc_x > INT_MAX - (int32_t)
>> new_plane_state->crtc_w ||
>> @@ -649,49 +705,11 @@ static int drm_atomic_plane_check(const struct
>> drm_plane_state *old_plane_state,
>> return -ERANGE;
>> }
>> - fb_width = fb->width << 16;
>> - fb_height = fb->height << 16;
>> - /* Make sure source coordinates are inside the fb. */
>> - if (new_plane_state->src_w > fb_width ||
>> - new_plane_state->src_x > fb_width - new_plane_state->src_w ||
>> - new_plane_state->src_h > fb_height ||
>> - new_plane_state->src_y > fb_height - new_plane_state->src_h) {
>> - drm_dbg_atomic(plane->dev,
>> - "[PLANE:%d:%s] invalid source coordinates "
>> - "%u.%06ux%u.%06u+%u.%06u+%u.%06u (fb %ux%u)\n",
>> - plane->base.id, plane->name,
>> - new_plane_state->src_w >> 16,
>> - ((new_plane_state->src_w & 0xffff) * 15625) >> 10,
>> - new_plane_state->src_h >> 16,
>> - ((new_plane_state->src_h & 0xffff) * 15625) >> 10,
>> - new_plane_state->src_x >> 16,
>> - ((new_plane_state->src_x & 0xffff) * 15625) >> 10,
>> - new_plane_state->src_y >> 16,
>> - ((new_plane_state->src_y & 0xffff) * 15625) >> 10,
>> - fb->width, fb->height);
>> - return -ENOSPC;
>> - }
>> -
>> - clips = __drm_plane_get_damage_clips(new_plane_state);
>> - num_clips = drm_plane_get_damage_clips_count(new_plane_state);
>> -
>> - /* Make sure damage clips are valid and inside the fb. */
>> - while (num_clips > 0) {
>> - if (clips->x1 >= clips->x2 ||
>> - clips->y1 >= clips->y2 ||
>> - clips->x1 < 0 ||
>> - clips->y1 < 0 ||
>> - clips->x2 > fb_width ||
>> - clips->y2 > fb_height) {
>> - drm_dbg_atomic(plane->dev,
>> - "[PLANE:%d:%s] invalid damage clip %d %d %d
>> %d\n",
>> - plane->base.id, plane->name, clips->x1,
>> - clips->y1, clips->x2, clips->y2);
>> - return -EINVAL;
>> - }
>> - clips++;
>> - num_clips--;
>> + if (fb) {
>
> This doesn't only move code, but also changes semantics, making the
> checks optional if no FB is provided. Consider moving the condition to
> the next patch. Otherwise LGTM.
Hi Dmitry,
Sounds good.
Thanks,
Jessica Zhang
>
>> + ret = drm_atomic_check_fb(new_plane_state);
>> + if (ret)
>> + return ret;
>> }
>> if (plane_switching_crtc(old_plane_state, new_plane_state)) {
>>
>
> --
> With best wishes
> Dmitry
>