[PATCH 6/8] drm/i915: Switch plane handling to atomic helpers (v2)

Matt Roper
2014-11-13T22:52:37Z

Now that we have hooks to enable the atomic plane helpers, we can use
the plane helpers for our .update_plane() and .disable_plane()
entrypoints.

Even though we'd already refactored our plane handling code into
check/commit, we still have to rework some of that logic here as we make
the transition. The atomic plane helpers now call prepare_fb/cleanup_fb
for us, so note the following:
- 'commit' should no longer unpin the old object; the cleanup_fb will
take care of this for us
- prepare_fb only gets called when we actually have an fb, so the
internal 'disable' code needs to update frontbuffer tracking
- the cursor plane code never had 'prepare' code separated from its
'commit' function, so a lot of the cursor's 'commit' needs to be
dropped since prepare_fb already does it for us
- with all the pinning work removed from cursor commit, it can no
longer fail and should return void rather than int

v2: Fix commit message typo (Bob)

Testcase: igt/kms_plane
Testcase: igt/kms_universal_plane
Testcase: igt/kms_cursor_crc
Acknowledged-by: Bob Paauwe <bob.j.paauwe@intel.com>
Signed-off-by: Matt Roper <matthew.d.roper@intel.com>
---
drivers/gpu/drm/i915/intel_display.c | 255 +++++------------------------------
drivers/gpu/drm/i915/intel_sprite.c | 122 ++---------------
2 files changed, 41 insertions(+), 336 deletions(-)

diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index 32a2b12..8d5a3b4 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -8285,17 +8285,15 @@ static bool cursor_size_ok(struct drm_device *dev,
return true;
}

-static int intel_crtc_cursor_set_obj(struct drm_crtc *crtc,
- struct drm_i915_gem_object *obj,
- uint32_t width, uint32_t height)
+static void intel_crtc_cursor_set_obj(struct drm_crtc *crtc,
+ struct drm_i915_gem_object *obj,
+ uint32_t width, uint32_t height)
{
struct drm_device *dev = crtc->dev;
- struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
enum pipe pipe = intel_crtc->pipe;
unsigned old_width;
uint32_t addr;
- int ret;

/* if we want to turn off the cursor ignore width and height */
if (!obj) {
@@ -8305,64 +8303,14 @@ static int intel_crtc_cursor_set_obj(struct drm_crtc *crtc,
goto finish;
}

- /* we only need to pin inside GTT if cursor is non-phy */
+ /* plane helper's prepare_fb() already handled pinning */
mutex_lock(&dev->struct_mutex);
- if (!INTEL_INFO(dev)->cursor_needs_physical) {
- unsigned alignment;
-
- /*
- * Global gtt pte registers are special registers which actually
- * forward writes to a chunk of system memory. Which means that
- * there is no risk that the register values disappear as soon
- * as we call intel_runtime_pm_put(), so it is correct to wrap
- * only the pin/unpin/fence and not more.
- */
- intel_runtime_pm_get(dev_priv);
-
- /* Note that the w/a also requires 2 PTE of padding following
- * the bo. We currently fill all unused PTE with the shadow
- * page and so we should always have valid PTE following the
- * cursor preventing the VT-d warning.
- */
- alignment = 0;
- if (need_vtd_wa(dev))
- alignment = 64*1024;
-
- ret = i915_gem_object_pin_to_display_plane(obj, alignment, NULL);
- if (ret) {
- DRM_DEBUG_KMS("failed to move cursor bo into the GTT\n");
- intel_runtime_pm_put(dev_priv);
- goto fail_locked;
- }
-
- ret = i915_gem_object_put_fence(obj);
- if (ret) {
- DRM_DEBUG_KMS("failed to release fence for cursor");
- intel_runtime_pm_put(dev_priv);
- goto fail_unpin;
- }
-
+ if (!INTEL_INFO(dev)->cursor_needs_physical)
addr = i915_gem_obj_ggtt_offset(obj);
-
- intel_runtime_pm_put(dev_priv);
- } else {
- int align = IS_I830(dev) ? 16 * 1024 : 256;
- ret = i915_gem_object_attach_phys(obj, align);
- if (ret) {
- DRM_DEBUG_KMS("failed to attach phys object\n");
- goto fail_locked;
- }
+ else
addr = obj->phys_handle->busaddr;
- }

finish:
- if (intel_crtc->cursor_bo) {
- if (!INTEL_INFO(dev)->cursor_needs_physical)
- i915_gem_object_unpin_from_display_plane(intel_crtc->cursor_bo);
- }
-
- i915_gem_track_fb(intel_crtc->cursor_bo, obj,
- INTEL_FRONTBUFFER_CURSOR(pipe));
mutex_unlock(&dev->struct_mutex);

old_width = intel_crtc->cursor_width;
@@ -8379,13 +8327,6 @@ static int intel_crtc_cursor_set_obj(struct drm_crtc *crtc,

intel_frontbuffer_flip(dev, INTEL_FRONTBUFFER_CURSOR(pipe));
}
-
- return 0;
-fail_unpin:
- i915_gem_object_unpin_from_display_plane(obj);
-fail_locked:
- mutex_unlock(&dev->struct_mutex);
- return ret;
}

static void intel_crtc_gamma_set(struct drm_crtc *crtc, u16 *red, u16 *green,
@@ -11544,7 +11485,6 @@ disable_unpin:
mutex_lock(&dev->struct_mutex);
i915_gem_track_fb(intel_fb_obj(plane->fb), NULL,
INTEL_FRONTBUFFER_PRIMARY(intel_crtc->pipe));
- intel_unpin_fb_obj(intel_fb_obj(plane->fb));
mutex_unlock(&dev->struct_mutex);
plane->fb = NULL;

@@ -11568,42 +11508,6 @@ intel_check_primary_plane(struct drm_plane *plane,
false, true, &state->visible);
}

-static int
-intel_prepare_primary_plane(struct drm_plane *plane,
- struct intel_plane_state *state)
-{
- struct drm_crtc *crtc = state->base.crtc;
- struct drm_framebuffer *fb = state->base.fb;
- struct drm_device *dev = crtc->dev;
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- enum pipe pipe = intel_crtc->pipe;
- struct drm_i915_gem_object *obj = intel_fb_obj(fb);
- struct drm_i915_gem_object *old_obj = intel_fb_obj(plane->fb);
- int ret;
-
- intel_crtc_wait_for_pending_flips(crtc);
-
- if (intel_crtc_has_pending_flip(crtc)) {
- DRM_ERROR("pipe is still busy with an old pageflip\n");
- return -EBUSY;
- }
-
- if (old_obj != obj) {
- mutex_lock(&dev->struct_mutex);
- ret = intel_pin_and_fence_fb_obj(plane, fb, NULL);
- if (ret == 0)
- i915_gem_track_fb(old_obj, obj,
- INTEL_FRONTBUFFER_PRIMARY(pipe));
- mutex_unlock(&dev->struct_mutex);
- if (ret != 0) {
- DRM_DEBUG_KMS("pin & fence failed\n");
- return ret;
- }
- }
-
- return 0;
-}
-
static void
intel_commit_primary_plane(struct drm_plane *plane,
struct intel_plane_state *state)
@@ -11614,9 +11518,7 @@ intel_commit_primary_plane(struct drm_plane *plane,
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
enum pipe pipe = intel_crtc->pipe;
- struct drm_framebuffer *old_fb = plane->fb;
struct drm_i915_gem_object *obj = intel_fb_obj(fb);
- struct drm_i915_gem_object *old_obj = intel_fb_obj(plane->fb);
struct intel_plane *intel_plane = to_intel_plane(plane);
struct drm_rect *src = &state->src;

@@ -11687,62 +11589,6 @@ intel_commit_primary_plane(struct drm_plane *plane,
intel_update_fbc(dev);
mutex_unlock(&dev->struct_mutex);
}
-
- if (old_fb && old_fb != fb) {
- if (intel_crtc->active)
- intel_wait_for_vblank(dev, intel_crtc->pipe);
-
- mutex_lock(&dev->struct_mutex);
- intel_unpin_fb_obj(old_obj);
- mutex_unlock(&dev->struct_mutex);
- }
-}
-
-static int
-intel_primary_plane_setplane(struct drm_plane *plane, struct drm_crtc *crtc,
- struct drm_framebuffer *fb, int crtc_x, int crtc_y,
- unsigned int crtc_w, unsigned int crtc_h,
- uint32_t src_x, uint32_t src_y,
- uint32_t src_w, uint32_t src_h)
-{
- struct intel_plane_state state;
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- int ret;
-
- state.base.crtc = crtc;
- state.base.fb = fb;
-
- /* sample coordinates in 16.16 fixed point */
- state.src.x1 = src_x;
- state.src.x2 = src_x + src_w;
- state.src.y1 = src_y;
- state.src.y2 = src_y + src_h;
-
- /* integer pixels */
- state.dst.x1 = crtc_x;
- state.dst.x2 = crtc_x + crtc_w;
- state.dst.y1 = crtc_y;
- state.dst.y2 = crtc_y + crtc_h;
-
- state.clip.x1 = 0;
- state.clip.y1 = 0;
- state.clip.x2 = intel_crtc->active ? intel_crtc->config.pipe_src_w : 0;
- state.clip.y2 = intel_crtc->active ? intel_crtc->config.pipe_src_h : 0;
-
- state.orig_src = state.src;
- state.orig_dst = state.dst;
-
- ret = intel_check_primary_plane(plane, &state);
- if (ret)
- return ret;
-
- ret = intel_prepare_primary_plane(plane, &state);
- if (ret)
- return ret;
-
- intel_commit_primary_plane(plane, &state);
-
- return 0;
}

/* Common destruction function for both primary and cursor planes */
@@ -11755,8 +11601,8 @@ void intel_plane_destroy(struct drm_plane *plane)
}

static const struct drm_plane_funcs intel_primary_plane_funcs = {
- .update_plane = intel_primary_plane_setplane,
- .disable_plane = intel_primary_plane_disable,
+ .update_plane = drm_plane_helper_update,
+ .disable_plane = drm_plane_helper_disable,
.destroy = intel_plane_destroy,
.set_property = intel_plane_set_property,
.atomic_duplicate_state = intel_plane_duplicate_state,
@@ -11816,15 +11662,22 @@ static struct drm_plane *intel_primary_plane_create(struct drm_device *dev,
return &primary->base;
}

-static int
+static void
intel_cursor_plane_disable(struct drm_plane *plane)
{
+ struct intel_plane *intel_plane = to_intel_plane(plane);
+
if (!plane->fb)
- return 0;
+ return;

BUG_ON(!plane->crtc);

- return intel_crtc_cursor_set_obj(plane->crtc, NULL, 0, 0);
+ intel_crtc_cursor_set_obj(plane->crtc, NULL, 0, 0);
+
+ mutex_lock(&plane->dev->struct_mutex);
+ i915_gem_track_fb(intel_fb_obj(plane->fb), NULL,
+ INTEL_FRONTBUFFER_CURSOR(intel_plane->pipe));
+ mutex_unlock(&plane->dev->struct_mutex);
}

static int
@@ -11838,7 +11691,6 @@ intel_check_cursor_plane(struct drm_plane *plane,
struct drm_rect *src = &state->src;
const struct drm_rect *clip = &state->clip;
struct drm_i915_gem_object *obj = intel_fb_obj(fb);
- int crtc_w, crtc_h;
unsigned stride;
int ret;

@@ -11856,15 +11708,14 @@ intel_check_cursor_plane(struct drm_plane *plane,
return 0;

/* Check for which cursor types we support */
- crtc_w = drm_rect_width(&state->orig_dst);
- crtc_h = drm_rect_height(&state->orig_dst);
- if (!cursor_size_ok(dev, crtc_w, crtc_h)) {
- DRM_DEBUG("Cursor dimension not supported\n");
+ if (!cursor_size_ok(dev, state->base.crtc_w, state->base.crtc_h)) {
+ DRM_DEBUG("Cursor dimension %dx%d not supported\n",
+ state->base.crtc_w, state->base.crtc_h);
return -EINVAL;
}

- stride = roundup_pow_of_two(crtc_w) * 4;
- if (obj->base.size < stride * crtc_h) {
+ stride = roundup_pow_of_two(state->base.crtc_w) * 4;
+ if (obj->base.size < stride * state->base.crtc_h) {
DRM_DEBUG_KMS("buffer is too small\n");
return -ENOMEM;
}
@@ -11883,7 +11734,7 @@ intel_check_cursor_plane(struct drm_plane *plane,
return ret;
}

-static int
+static void
intel_commit_cursor_plane(struct drm_plane *plane,
struct intel_plane_state *state)
{
@@ -11893,10 +11744,9 @@ intel_commit_cursor_plane(struct drm_plane *plane,
struct intel_plane *intel_plane = to_intel_plane(plane);
struct intel_framebuffer *intel_fb = to_intel_framebuffer(fb);
struct drm_i915_gem_object *obj = intel_fb->obj;
- int crtc_w, crtc_h;

- crtc->cursor_x = state->orig_dst.x1;
- crtc->cursor_y = state->orig_dst.y1;
+ crtc->cursor_x = state->base.crtc_x;
+ crtc->cursor_y = state->base.crtc_y;

intel_plane->crtc_x = state->orig_dst.x1;
intel_plane->crtc_y = state->orig_dst.y1;
@@ -11909,63 +11759,20 @@ intel_commit_cursor_plane(struct drm_plane *plane,
intel_plane->obj = obj;

if (fb != crtc->cursor->fb) {
- crtc_w = drm_rect_width(&state->orig_dst);
- crtc_h = drm_rect_height(&state->orig_dst);
- return intel_crtc_cursor_set_obj(crtc, obj, crtc_w, crtc_h);
+ intel_crtc_cursor_set_obj(crtc, obj,
+ state->base.crtc_w,
+ state->base.crtc_h);
} else {
intel_crtc_update_cursor(crtc, state->visible);

intel_frontbuffer_flip(crtc->dev,
INTEL_FRONTBUFFER_CURSOR(intel_crtc->pipe));
-
- return 0;
}
}

-static int
-intel_cursor_plane_update(struct drm_plane *plane, struct drm_crtc *crtc,
- struct drm_framebuffer *fb, int crtc_x, int crtc_y,
- unsigned int crtc_w, unsigned int crtc_h,
- uint32_t src_x, uint32_t src_y,
- uint32_t src_w, uint32_t src_h)
-{
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- struct intel_plane_state state;
- int ret;
-
- state.base.crtc = crtc;
- state.base.fb = fb;
-
- /* sample coordinates in 16.16 fixed point */
- state.src.x1 = src_x;
- state.src.x2 = src_x + src_w;
- state.src.y1 = src_y;
- state.src.y2 = src_y + src_h;
-
- /* integer pixels */
- state.dst.x1 = crtc_x;
- state.dst.x2 = crtc_x + crtc_w;
- state.dst.y1 = crtc_y;
- state.dst.y2 = crtc_y + crtc_h;
-
- state.clip.x1 = 0;
- state.clip.y1 = 0;
- state.clip.x2 = intel_crtc->active ? intel_crtc->config.pipe_src_w : 0;
- state.clip.y2 = intel_crtc->active ? intel_crtc->config.pipe_src_h : 0;
-
- state.orig_src = state.src;
- state.orig_dst = state.dst;
-
- ret = intel_check_cursor_plane(plane, &state);
- if (ret)
- return ret;
-
- return intel_commit_cursor_plane(plane, &state);
-}
-
static const struct drm_plane_funcs intel_cursor_plane_funcs = {
- .update_plane = intel_cursor_plane_update,
- .disable_plane = intel_cursor_plane_disable,
+ .update_plane = drm_plane_helper_update,
+ .disable_plane = drm_plane_helper_disable,
.destroy = intel_plane_destroy,
.set_property = intel_plane_set_property,
.atomic_duplicate_state = intel_plane_duplicate_state,
diff --git a/drivers/gpu/drm/i915/intel_sprite.c b/drivers/gpu/drm/i915/intel_sprite.c
index d3677c3..28ccaf7 100644
--- a/drivers/gpu/drm/i915/intel_sprite.c
+++ b/drivers/gpu/drm/i915/intel_sprite.c
@@ -1106,7 +1106,6 @@ intel_check_sprite_plane(struct drm_plane *plane,
uint32_t src_x, src_y, src_w, src_h;
struct drm_rect *src = &state->src;
struct drm_rect *dst = &state->dst;
- struct drm_rect *orig_src = &state->orig_src;
const struct drm_rect *clip = &state->clip;
int hscale, vscale;
int max_scale, min_scale;
@@ -1187,10 +1186,10 @@ intel_check_sprite_plane(struct drm_plane *plane,
intel_plane->rotation);

/* sanity check to make sure the src viewport wasn't enlarged */
- WARN_ON(src->x1 < (int) orig_src->x1 ||
- src->y1 < (int) orig_src->y1 ||
- src->x2 > (int) orig_src->x2 ||
- src->y2 > (int) orig_src->y2);
+ WARN_ON(src->x1 < (int) state->base.src_x ||
+ src->y1 < (int) state->base.src_y ||
+ src->x2 > (int) state->base.src_x + state->base.src_w ||
+ src->y2 > (int) state->base.src_y + state->base.src_h);

/*
* Hardware doesn't handle subpixel coordinates.
@@ -1258,41 +1257,6 @@ intel_check_sprite_plane(struct drm_plane *plane,
return 0;
}

-static int
-intel_prepare_sprite_plane(struct drm_plane *plane,
- struct intel_plane_state *state)
-{
- struct drm_device *dev = plane->dev;
- struct drm_crtc *crtc = state->base.crtc;
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- struct intel_plane *intel_plane = to_intel_plane(plane);
- enum pipe pipe = intel_crtc->pipe;
- struct drm_framebuffer *fb = state->base.fb;
- struct drm_i915_gem_object *obj = intel_fb_obj(fb);
- struct drm_i915_gem_object *old_obj = intel_plane->obj;
- int ret;
-
- if (old_obj != obj) {
- mutex_lock(&dev->struct_mutex);
-
- /* Note that this will apply the VT-d workaround for scanouts,
- * which is more restrictive than required for sprites. (The
- * primary plane requires 256KiB alignment with 64 PTE padding,
- * the sprite planes only require 128KiB alignment and 32 PTE
- * padding.
- */
- ret = intel_pin_and_fence_fb_obj(plane, fb, NULL);
- if (ret == 0)
- i915_gem_track_fb(old_obj, obj,
- INTEL_FRONTBUFFER_SPRITE(pipe));
- mutex_unlock(&dev->struct_mutex);
- if (ret)
- return ret;
- }
-
- return 0;
-}
-
static void
intel_commit_sprite_plane(struct drm_plane *plane,
struct intel_plane_state *state)
@@ -1304,7 +1268,6 @@ intel_commit_sprite_plane(struct drm_plane *plane,
enum pipe pipe = intel_crtc->pipe;
struct drm_framebuffer *fb = state->base.fb;
struct drm_i915_gem_object *obj = intel_fb_obj(fb);
- struct drm_i915_gem_object *old_obj = intel_plane->obj;
int crtc_x, crtc_y;
unsigned int crtc_w, crtc_h;
uint32_t src_x, src_y, src_w, src_h;
@@ -1362,68 +1325,6 @@ intel_commit_sprite_plane(struct drm_plane *plane,
if (!primary_was_enabled && primary_enabled)
intel_post_enable_primary(crtc);
}
-
- /* Unpin old obj after new one is active to avoid ugliness */
- if (old_obj && old_obj != obj) {
-
- /*
- * It's fairly common to simply update the position of
- * an existing object. In that case, we don't need to
- * wait for vblank to avoid ugliness, we only need to
- * do the pin & ref bookkeeping.
- */
- if (intel_crtc->active)
- intel_wait_for_vblank(dev, intel_crtc->pipe);
-
- mutex_lock(&dev->struct_mutex);
- intel_unpin_fb_obj(old_obj);
- mutex_unlock(&dev->struct_mutex);
- }
-}
-
-static int
-intel_update_plane(struct drm_plane *plane, struct drm_crtc *crtc,
- struct drm_framebuffer *fb, int crtc_x, int crtc_y,
- unsigned int crtc_w, unsigned int crtc_h,
- uint32_t src_x, uint32_t src_y,
- uint32_t src_w, uint32_t src_h)
-{
- struct intel_plane_state state;
- struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
- int ret;
-
- state.base.crtc = crtc;
- state.base.fb = fb;
-
- /* sample coordinates in 16.16 fixed point */
- state.src.x1 = src_x;
- state.src.x2 = src_x + src_w;
- state.src.y1 = src_y;
- state.src.y2 = src_y + src_h;
-
- /* integer pixels */
- state.dst.x1 = crtc_x;
- state.dst.x2 = crtc_x + crtc_w;
- state.dst.y1 = crtc_y;
- state.dst.y2 = crtc_y + crtc_h;
-
- state.clip.x1 = 0;
- state.clip.y1 = 0;
- state.clip.x2 = intel_crtc->active ? intel_crtc->config.pipe_src_w : 0;
- state.clip.y2 = intel_crtc->active ? intel_crtc->config.pipe_src_h : 0;
- state.orig_src = state.src;
- state.orig_dst = state.dst;
-
- ret = intel_check_sprite_plane(plane, &state);
- if (ret)
- return ret;
-
- ret = intel_prepare_sprite_plane(plane, &state);
- if (ret)
- return ret;
-
- intel_commit_sprite_plane(plane, &state);
- return 0;
}

int
@@ -1459,7 +1360,6 @@ intel_sprite_plane_disable(struct drm_plane *plane)
intel_wait_for_vblank(dev, intel_plane->pipe);

mutex_lock(&dev->struct_mutex);
- intel_unpin_fb_obj(intel_plane->obj);
i915_gem_track_fb(intel_plane->obj, NULL,
INTEL_FRONTBUFFER_SPRITE(pipe));
mutex_unlock(&dev->struct_mutex);
@@ -1557,21 +1457,19 @@ int intel_plane_set_property(struct drm_plane *plane,

int intel_plane_restore(struct drm_plane *plane)
{
- struct intel_plane *intel_plane = to_intel_plane(plane);
-
if (!plane->crtc || !plane->fb)
return 0;

return plane->funcs->update_plane(plane, plane->crtc, plane->fb,
- intel_plane->crtc_x, intel_plane->crtc_y,
- intel_plane->crtc_w, intel_plane->crtc_h,
- intel_plane->src_x, intel_plane->src_y,
- intel_plane->src_w, intel_plane->src_h);
+ plane->state->crtc_x, plane->state->crtc_y,
+ plane->state->crtc_w, plane->state->crtc_h,
+ plane->state->src_x, plane->state->src_y,
+ plane->state->src_w, plane->state->src_h);
}

static const struct drm_plane_funcs intel_plane_funcs = {
- .update_plane = intel_update_plane,
- .disable_plane = intel_sprite_plane_disable,
+ .update_plane = drm_plane_helper_update,
+ .disable_plane = drm_plane_helper_disable,
.destroy = intel_plane_destroy,
.set_property = intel_plane_set_property,
.atomic_duplicate_state = intel_plane_duplicate_state,
--
1.8.5.1