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linux-zen-server/drivers/gpu/drm/i915/display/intel_atomic_plane.c

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/*
* Copyright © 2014 Intel Corporation
*
* 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 (including the next
* paragraph) 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 AUTHORS OR COPYRIGHT HOLDERS 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.
*/
/**
* DOC: atomic plane helpers
*
* The functions here are used by the atomic plane helper functions to
* implement legacy plane updates (i.e., drm_plane->update_plane() and
* drm_plane->disable_plane()). This allows plane updates to use the
* atomic state infrastructure and perform plane updates as separate
* prepare/check/commit/cleanup steps.
*/
#include <drm/drm_atomic_helper.h>
#include <drm/drm_fourcc.h>
#include "gt/intel_rps.h"
#include "i915_config.h"
#include "intel_atomic_plane.h"
#include "intel_cdclk.h"
#include "intel_display_trace.h"
#include "intel_display_types.h"
#include "intel_fb.h"
#include "intel_fb_pin.h"
#include "intel_sprite.h"
#include "skl_scaler.h"
#include "skl_watermark.h"
static void intel_plane_state_reset(struct intel_plane_state *plane_state,
struct intel_plane *plane)
{
memset(plane_state, 0, sizeof(*plane_state));
__drm_atomic_helper_plane_state_reset(&plane_state->uapi, &plane->base);
plane_state->scaler_id = -1;
}
struct intel_plane *intel_plane_alloc(void)
{
struct intel_plane_state *plane_state;
struct intel_plane *plane;
plane = kzalloc(sizeof(*plane), GFP_KERNEL);
if (!plane)
return ERR_PTR(-ENOMEM);
plane_state = kzalloc(sizeof(*plane_state), GFP_KERNEL);
if (!plane_state) {
kfree(plane);
return ERR_PTR(-ENOMEM);
}
intel_plane_state_reset(plane_state, plane);
plane->base.state = &plane_state->uapi;
return plane;
}
void intel_plane_free(struct intel_plane *plane)
{
intel_plane_destroy_state(&plane->base, plane->base.state);
kfree(plane);
}
/**
* intel_plane_duplicate_state - duplicate plane state
* @plane: drm plane
*
* Allocates and returns a copy of the plane state (both common and
* Intel-specific) for the specified plane.
*
* Returns: The newly allocated plane state, or NULL on failure.
*/
struct drm_plane_state *
intel_plane_duplicate_state(struct drm_plane *plane)
{
struct intel_plane_state *intel_state;
intel_state = to_intel_plane_state(plane->state);
intel_state = kmemdup(intel_state, sizeof(*intel_state), GFP_KERNEL);
if (!intel_state)
return NULL;
__drm_atomic_helper_plane_duplicate_state(plane, &intel_state->uapi);
intel_state->ggtt_vma = NULL;
intel_state->dpt_vma = NULL;
intel_state->flags = 0;
/* add reference to fb */
if (intel_state->hw.fb)
drm_framebuffer_get(intel_state->hw.fb);
return &intel_state->uapi;
}
/**
* intel_plane_destroy_state - destroy plane state
* @plane: drm plane
* @state: state object to destroy
*
* Destroys the plane state (both common and Intel-specific) for the
* specified plane.
*/
void
intel_plane_destroy_state(struct drm_plane *plane,
struct drm_plane_state *state)
{
struct intel_plane_state *plane_state = to_intel_plane_state(state);
drm_WARN_ON(plane->dev, plane_state->ggtt_vma);
drm_WARN_ON(plane->dev, plane_state->dpt_vma);
__drm_atomic_helper_plane_destroy_state(&plane_state->uapi);
if (plane_state->hw.fb)
drm_framebuffer_put(plane_state->hw.fb);
kfree(plane_state);
}
unsigned int intel_adjusted_rate(const struct drm_rect *src,
const struct drm_rect *dst,
unsigned int rate)
{
unsigned int src_w, src_h, dst_w, dst_h;
src_w = drm_rect_width(src) >> 16;
src_h = drm_rect_height(src) >> 16;
dst_w = drm_rect_width(dst);
dst_h = drm_rect_height(dst);
/* Downscaling limits the maximum pixel rate */
dst_w = min(src_w, dst_w);
dst_h = min(src_h, dst_h);
return DIV_ROUND_UP_ULL(mul_u32_u32(rate, src_w * src_h),
dst_w * dst_h);
}
unsigned int intel_plane_pixel_rate(const struct intel_crtc_state *crtc_state,
const struct intel_plane_state *plane_state)
{
/*
* Note we don't check for plane visibility here as
* we want to use this when calculating the cursor
* watermarks even if the cursor is fully offscreen.
* That depends on the src/dst rectangles being
* correctly populated whenever the watermark code
* considers the cursor to be visible, whether or not
* it is actually visible.
*
* See: intel_wm_plane_visible() and intel_check_cursor()
*/
return intel_adjusted_rate(&plane_state->uapi.src,
&plane_state->uapi.dst,
crtc_state->pixel_rate);
}
unsigned int intel_plane_data_rate(const struct intel_crtc_state *crtc_state,
const struct intel_plane_state *plane_state,
int color_plane)
{
const struct drm_framebuffer *fb = plane_state->hw.fb;
if (!plane_state->uapi.visible)
return 0;
return intel_plane_pixel_rate(crtc_state, plane_state) *
fb->format->cpp[color_plane];
}
static bool
use_min_ddb(const struct intel_crtc_state *crtc_state,
struct intel_plane *plane)
{
struct drm_i915_private *i915 = to_i915(plane->base.dev);
return DISPLAY_VER(i915) >= 13 &&
crtc_state->uapi.async_flip &&
plane->async_flip;
}
static unsigned int
intel_plane_relative_data_rate(const struct intel_crtc_state *crtc_state,
const struct intel_plane_state *plane_state,
int color_plane)
{
struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
const struct drm_framebuffer *fb = plane_state->hw.fb;
int width, height;
if (plane->id == PLANE_CURSOR)
return 0;
if (!plane_state->uapi.visible)
return 0;
/*
* We calculate extra ddb based on ratio plane rate/total data rate
* in case, in some cases we should not allocate extra ddb for the plane,
* so do not count its data rate, if this is the case.
*/
if (use_min_ddb(crtc_state, plane))
return 0;
/*
* Src coordinates are already rotated by 270 degrees for
* the 90/270 degree plane rotation cases (to match the
* GTT mapping), hence no need to account for rotation here.
*/
width = drm_rect_width(&plane_state->uapi.src) >> 16;
height = drm_rect_height(&plane_state->uapi.src) >> 16;
/* UV plane does 1/2 pixel sub-sampling */
if (color_plane == 1) {
width /= 2;
height /= 2;
}
return width * height * fb->format->cpp[color_plane];
}
int intel_plane_calc_min_cdclk(struct intel_atomic_state *state,
struct intel_plane *plane,
bool *need_cdclk_calc)
{
struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
const struct intel_plane_state *plane_state =
intel_atomic_get_new_plane_state(state, plane);
struct intel_crtc *crtc = to_intel_crtc(plane_state->hw.crtc);
const struct intel_cdclk_state *cdclk_state;
const struct intel_crtc_state *old_crtc_state;
struct intel_crtc_state *new_crtc_state;
if (!plane_state->uapi.visible || !plane->min_cdclk)
return 0;
old_crtc_state = intel_atomic_get_old_crtc_state(state, crtc);
new_crtc_state = intel_atomic_get_new_crtc_state(state, crtc);
new_crtc_state->min_cdclk[plane->id] =
plane->min_cdclk(new_crtc_state, plane_state);
/*
* No need to check against the cdclk state if
* the min cdclk for the plane doesn't increase.
*
* Ie. we only ever increase the cdclk due to plane
* requirements. This can reduce back and forth
* display blinking due to constant cdclk changes.
*/
if (new_crtc_state->min_cdclk[plane->id] <=
old_crtc_state->min_cdclk[plane->id])
return 0;
cdclk_state = intel_atomic_get_cdclk_state(state);
if (IS_ERR(cdclk_state))
return PTR_ERR(cdclk_state);
/*
* No need to recalculate the cdclk state if
* the min cdclk for the pipe doesn't increase.
*
* Ie. we only ever increase the cdclk due to plane
* requirements. This can reduce back and forth
* display blinking due to constant cdclk changes.
*/
if (new_crtc_state->min_cdclk[plane->id] <=
cdclk_state->min_cdclk[crtc->pipe])
return 0;
drm_dbg_kms(&dev_priv->drm,
"[PLANE:%d:%s] min cdclk (%d kHz) > [CRTC:%d:%s] min cdclk (%d kHz)\n",
plane->base.base.id, plane->base.name,
new_crtc_state->min_cdclk[plane->id],
crtc->base.base.id, crtc->base.name,
cdclk_state->min_cdclk[crtc->pipe]);
*need_cdclk_calc = true;
return 0;
}
static void intel_plane_clear_hw_state(struct intel_plane_state *plane_state)
{
if (plane_state->hw.fb)
drm_framebuffer_put(plane_state->hw.fb);
memset(&plane_state->hw, 0, sizeof(plane_state->hw));
}
void intel_plane_copy_uapi_to_hw_state(struct intel_plane_state *plane_state,
const struct intel_plane_state *from_plane_state,
struct intel_crtc *crtc)
{
intel_plane_clear_hw_state(plane_state);
/*
* For the bigjoiner slave uapi.crtc will point at
* the master crtc. So we explicitly assign the right
* slave crtc to hw.crtc. uapi.crtc!=NULL simply indicates
* the plane is logically enabled on the uapi level.
*/
plane_state->hw.crtc = from_plane_state->uapi.crtc ? &crtc->base : NULL;
plane_state->hw.fb = from_plane_state->uapi.fb;
if (plane_state->hw.fb)
drm_framebuffer_get(plane_state->hw.fb);
plane_state->hw.alpha = from_plane_state->uapi.alpha;
plane_state->hw.pixel_blend_mode =
from_plane_state->uapi.pixel_blend_mode;
plane_state->hw.rotation = from_plane_state->uapi.rotation;
plane_state->hw.color_encoding = from_plane_state->uapi.color_encoding;
plane_state->hw.color_range = from_plane_state->uapi.color_range;
plane_state->hw.scaling_filter = from_plane_state->uapi.scaling_filter;
plane_state->uapi.src = drm_plane_state_src(&from_plane_state->uapi);
plane_state->uapi.dst = drm_plane_state_dest(&from_plane_state->uapi);
}
void intel_plane_copy_hw_state(struct intel_plane_state *plane_state,
const struct intel_plane_state *from_plane_state)
{
intel_plane_clear_hw_state(plane_state);
memcpy(&plane_state->hw, &from_plane_state->hw,
sizeof(plane_state->hw));
if (plane_state->hw.fb)
drm_framebuffer_get(plane_state->hw.fb);
}
void intel_plane_set_invisible(struct intel_crtc_state *crtc_state,
struct intel_plane_state *plane_state)
{
struct intel_plane *plane = to_intel_plane(plane_state->uapi.plane);
crtc_state->active_planes &= ~BIT(plane->id);
crtc_state->scaled_planes &= ~BIT(plane->id);
crtc_state->nv12_planes &= ~BIT(plane->id);
crtc_state->c8_planes &= ~BIT(plane->id);
crtc_state->data_rate[plane->id] = 0;
crtc_state->data_rate_y[plane->id] = 0;
crtc_state->rel_data_rate[plane->id] = 0;
crtc_state->rel_data_rate_y[plane->id] = 0;
crtc_state->min_cdclk[plane->id] = 0;
plane_state->uapi.visible = false;
}
/* FIXME nuke when all wm code is atomic */
static bool intel_wm_need_update(const struct intel_plane_state *cur,
struct intel_plane_state *new)
{
/* Update watermarks on tiling or size changes. */
if (new->uapi.visible != cur->uapi.visible)
return true;
if (!cur->hw.fb || !new->hw.fb)
return false;
if (cur->hw.fb->modifier != new->hw.fb->modifier ||
cur->hw.rotation != new->hw.rotation ||
drm_rect_width(&new->uapi.src) != drm_rect_width(&cur->uapi.src) ||
drm_rect_height(&new->uapi.src) != drm_rect_height(&cur->uapi.src) ||
drm_rect_width(&new->uapi.dst) != drm_rect_width(&cur->uapi.dst) ||
drm_rect_height(&new->uapi.dst) != drm_rect_height(&cur->uapi.dst))
return true;
return false;
}
static bool intel_plane_is_scaled(const struct intel_plane_state *plane_state)
{
int src_w = drm_rect_width(&plane_state->uapi.src) >> 16;
int src_h = drm_rect_height(&plane_state->uapi.src) >> 16;
int dst_w = drm_rect_width(&plane_state->uapi.dst);
int dst_h = drm_rect_height(&plane_state->uapi.dst);
return src_w != dst_w || src_h != dst_h;
}
static bool intel_plane_do_async_flip(struct intel_plane *plane,
const struct intel_crtc_state *old_crtc_state,
const struct intel_crtc_state *new_crtc_state)
{
struct drm_i915_private *i915 = to_i915(plane->base.dev);
if (!plane->async_flip)
return false;
if (!new_crtc_state->uapi.async_flip)
return false;
/*
* In platforms after DISPLAY13, we might need to override
* first async flip in order to change watermark levels
* as part of optimization.
* So for those, we are checking if this is a first async flip.
* For platforms earlier than DISPLAY13 we always do async flip.
*/
return DISPLAY_VER(i915) < 13 || old_crtc_state->uapi.async_flip;
}
static bool i9xx_must_disable_cxsr(const struct intel_crtc_state *new_crtc_state,
const struct intel_plane_state *old_plane_state,
const struct intel_plane_state *new_plane_state)
{
struct intel_plane *plane = to_intel_plane(new_plane_state->uapi.plane);
bool old_visible = old_plane_state->uapi.visible;
bool new_visible = new_plane_state->uapi.visible;
u32 old_ctl = old_plane_state->ctl;
u32 new_ctl = new_plane_state->ctl;
bool modeset, turn_on, turn_off;
if (plane->id == PLANE_CURSOR)
return false;
modeset = intel_crtc_needs_modeset(new_crtc_state);
turn_off = old_visible && (!new_visible || modeset);
turn_on = new_visible && (!old_visible || modeset);
/* Must disable CxSR around plane enable/disable */
if (turn_on || turn_off)
return true;
if (!old_visible || !new_visible)
return false;
/*
* Most plane control register updates are blocked while in CxSR.
*
* Tiling mode is one exception where the primary plane can
* apparently handle it, whereas the sprites can not (the
* sprite issue being only relevant on VLV/CHV where CxSR
* is actually possible with a sprite enabled).
*/
if (plane->id == PLANE_PRIMARY) {
old_ctl &= ~DISP_TILED;
new_ctl &= ~DISP_TILED;
}
return old_ctl != new_ctl;
}
static int intel_plane_atomic_calc_changes(const struct intel_crtc_state *old_crtc_state,
struct intel_crtc_state *new_crtc_state,
const struct intel_plane_state *old_plane_state,
struct intel_plane_state *new_plane_state)
{
struct intel_crtc *crtc = to_intel_crtc(new_crtc_state->uapi.crtc);
struct intel_plane *plane = to_intel_plane(new_plane_state->uapi.plane);
struct drm_i915_private *dev_priv = to_i915(crtc->base.dev);
bool mode_changed = intel_crtc_needs_modeset(new_crtc_state);
bool was_crtc_enabled = old_crtc_state->hw.active;
bool is_crtc_enabled = new_crtc_state->hw.active;
bool turn_off, turn_on, visible, was_visible;
int ret;
if (DISPLAY_VER(dev_priv) >= 9 && plane->id != PLANE_CURSOR) {
ret = skl_update_scaler_plane(new_crtc_state, new_plane_state);
if (ret)
return ret;
}
was_visible = old_plane_state->uapi.visible;
visible = new_plane_state->uapi.visible;
if (!was_crtc_enabled && drm_WARN_ON(&dev_priv->drm, was_visible))
was_visible = false;
/*
* Visibility is calculated as if the crtc was on, but
* after scaler setup everything depends on it being off
* when the crtc isn't active.
*
* FIXME this is wrong for watermarks. Watermarks should also
* be computed as if the pipe would be active. Perhaps move
* per-plane wm computation to the .check_plane() hook, and
* only combine the results from all planes in the current place?
*/
if (!is_crtc_enabled) {
intel_plane_set_invisible(new_crtc_state, new_plane_state);
visible = false;
}
if (!was_visible && !visible)
return 0;
turn_off = was_visible && (!visible || mode_changed);
turn_on = visible && (!was_visible || mode_changed);
drm_dbg_atomic(&dev_priv->drm,
"[CRTC:%d:%s] with [PLANE:%d:%s] visible %i -> %i, off %i, on %i, ms %i\n",
crtc->base.base.id, crtc->base.name,
plane->base.base.id, plane->base.name,
was_visible, visible,
turn_off, turn_on, mode_changed);
if (turn_on) {
if (DISPLAY_VER(dev_priv) < 5 && !IS_G4X(dev_priv))
new_crtc_state->update_wm_pre = true;
} else if (turn_off) {
if (DISPLAY_VER(dev_priv) < 5 && !IS_G4X(dev_priv))
new_crtc_state->update_wm_post = true;
} else if (intel_wm_need_update(old_plane_state, new_plane_state)) {
if (DISPLAY_VER(dev_priv) < 5 && !IS_G4X(dev_priv)) {
/* FIXME bollocks */
new_crtc_state->update_wm_pre = true;
new_crtc_state->update_wm_post = true;
}
}
if (visible || was_visible)
new_crtc_state->fb_bits |= plane->frontbuffer_bit;
if (HAS_GMCH(dev_priv) &&
i9xx_must_disable_cxsr(new_crtc_state, old_plane_state, new_plane_state))
new_crtc_state->disable_cxsr = true;
/*
* ILK/SNB DVSACNTR/Sprite Enable
* IVB SPR_CTL/Sprite Enable
* "When in Self Refresh Big FIFO mode, a write to enable the
* plane will be internally buffered and delayed while Big FIFO
* mode is exiting."
*
* Which means that enabling the sprite can take an extra frame
* when we start in big FIFO mode (LP1+). Thus we need to drop
* down to LP0 and wait for vblank in order to make sure the
* sprite gets enabled on the next vblank after the register write.
* Doing otherwise would risk enabling the sprite one frame after
* we've already signalled flip completion. We can resume LP1+
* once the sprite has been enabled.
*
*
* WaCxSRDisabledForSpriteScaling:ivb
* IVB SPR_SCALE/Scaling Enable
* "Low Power watermarks must be disabled for at least one
* frame before enabling sprite scaling, and kept disabled
* until sprite scaling is disabled."
*
* ILK/SNB DVSASCALE/Scaling Enable
* "When in Self Refresh Big FIFO mode, scaling enable will be
* masked off while Big FIFO mode is exiting."
*
* Despite the w/a only being listed for IVB we assume that
* the ILK/SNB note has similar ramifications, hence we apply
* the w/a on all three platforms.
*
* With experimental results seems this is needed also for primary
* plane, not only sprite plane.
*/
if (plane->id != PLANE_CURSOR &&
(IS_IRONLAKE(dev_priv) || IS_SANDYBRIDGE(dev_priv) ||
IS_IVYBRIDGE(dev_priv)) &&
(turn_on || (!intel_plane_is_scaled(old_plane_state) &&
intel_plane_is_scaled(new_plane_state))))
new_crtc_state->disable_lp_wm = true;
if (intel_plane_do_async_flip(plane, old_crtc_state, new_crtc_state))
new_crtc_state->do_async_flip = true;
return 0;
}
int intel_plane_atomic_check_with_state(const struct intel_crtc_state *old_crtc_state,
struct intel_crtc_state *new_crtc_state,
const struct intel_plane_state *old_plane_state,
struct intel_plane_state *new_plane_state)
{
struct intel_plane *plane = to_intel_plane(new_plane_state->uapi.plane);
const struct drm_framebuffer *fb = new_plane_state->hw.fb;
int ret;
intel_plane_set_invisible(new_crtc_state, new_plane_state);
new_crtc_state->enabled_planes &= ~BIT(plane->id);
if (!new_plane_state->hw.crtc && !old_plane_state->hw.crtc)
return 0;
ret = plane->check_plane(new_crtc_state, new_plane_state);
if (ret)
return ret;
if (fb)
new_crtc_state->enabled_planes |= BIT(plane->id);
/* FIXME pre-g4x don't work like this */
if (new_plane_state->uapi.visible)
new_crtc_state->active_planes |= BIT(plane->id);
if (new_plane_state->uapi.visible &&
intel_plane_is_scaled(new_plane_state))
new_crtc_state->scaled_planes |= BIT(plane->id);
if (new_plane_state->uapi.visible &&
intel_format_info_is_yuv_semiplanar(fb->format, fb->modifier))
new_crtc_state->nv12_planes |= BIT(plane->id);
if (new_plane_state->uapi.visible &&
fb->format->format == DRM_FORMAT_C8)
new_crtc_state->c8_planes |= BIT(plane->id);
if (new_plane_state->uapi.visible || old_plane_state->uapi.visible)
new_crtc_state->update_planes |= BIT(plane->id);
if (new_plane_state->uapi.visible &&
intel_format_info_is_yuv_semiplanar(fb->format, fb->modifier)) {
new_crtc_state->data_rate_y[plane->id] =
intel_plane_data_rate(new_crtc_state, new_plane_state, 0);
new_crtc_state->data_rate[plane->id] =
intel_plane_data_rate(new_crtc_state, new_plane_state, 1);
new_crtc_state->rel_data_rate_y[plane->id] =
intel_plane_relative_data_rate(new_crtc_state,
new_plane_state, 0);
new_crtc_state->rel_data_rate[plane->id] =
intel_plane_relative_data_rate(new_crtc_state,
new_plane_state, 1);
} else if (new_plane_state->uapi.visible) {
new_crtc_state->data_rate[plane->id] =
intel_plane_data_rate(new_crtc_state, new_plane_state, 0);
new_crtc_state->rel_data_rate[plane->id] =
intel_plane_relative_data_rate(new_crtc_state,
new_plane_state, 0);
}
return intel_plane_atomic_calc_changes(old_crtc_state, new_crtc_state,
old_plane_state, new_plane_state);
}
static struct intel_plane *
intel_crtc_get_plane(struct intel_crtc *crtc, enum plane_id plane_id)
{
struct drm_i915_private *i915 = to_i915(crtc->base.dev);
struct intel_plane *plane;
for_each_intel_plane_on_crtc(&i915->drm, crtc, plane) {
if (plane->id == plane_id)
return plane;
}
return NULL;
}
int intel_plane_atomic_check(struct intel_atomic_state *state,
struct intel_plane *plane)
{
struct drm_i915_private *i915 = to_i915(state->base.dev);
struct intel_plane_state *new_plane_state =
intel_atomic_get_new_plane_state(state, plane);
const struct intel_plane_state *old_plane_state =
intel_atomic_get_old_plane_state(state, plane);
const struct intel_plane_state *new_master_plane_state;
struct intel_crtc *crtc = intel_crtc_for_pipe(i915, plane->pipe);
const struct intel_crtc_state *old_crtc_state =
intel_atomic_get_old_crtc_state(state, crtc);
struct intel_crtc_state *new_crtc_state =
intel_atomic_get_new_crtc_state(state, crtc);
if (new_crtc_state && intel_crtc_is_bigjoiner_slave(new_crtc_state)) {
struct intel_crtc *master_crtc =
intel_master_crtc(new_crtc_state);
struct intel_plane *master_plane =
intel_crtc_get_plane(master_crtc, plane->id);
new_master_plane_state =
intel_atomic_get_new_plane_state(state, master_plane);
} else {
new_master_plane_state = new_plane_state;
}
intel_plane_copy_uapi_to_hw_state(new_plane_state,
new_master_plane_state,
crtc);
new_plane_state->uapi.visible = false;
if (!new_crtc_state)
return 0;
return intel_plane_atomic_check_with_state(old_crtc_state,
new_crtc_state,
old_plane_state,
new_plane_state);
}
static struct intel_plane *
skl_next_plane_to_commit(struct intel_atomic_state *state,
struct intel_crtc *crtc,
struct skl_ddb_entry ddb[I915_MAX_PLANES],
struct skl_ddb_entry ddb_y[I915_MAX_PLANES],
unsigned int *update_mask)
{
struct intel_crtc_state *crtc_state =
intel_atomic_get_new_crtc_state(state, crtc);
struct intel_plane_state *plane_state;
struct intel_plane *plane;
int i;
if (*update_mask == 0)
return NULL;
for_each_new_intel_plane_in_state(state, plane, plane_state, i) {
enum plane_id plane_id = plane->id;
if (crtc->pipe != plane->pipe ||
!(*update_mask & BIT(plane_id)))
continue;
if (skl_ddb_allocation_overlaps(&crtc_state->wm.skl.plane_ddb[plane_id],
ddb, I915_MAX_PLANES, plane_id) ||
skl_ddb_allocation_overlaps(&crtc_state->wm.skl.plane_ddb_y[plane_id],
ddb_y, I915_MAX_PLANES, plane_id))
continue;
*update_mask &= ~BIT(plane_id);
ddb[plane_id] = crtc_state->wm.skl.plane_ddb[plane_id];
ddb_y[plane_id] = crtc_state->wm.skl.plane_ddb_y[plane_id];
return plane;
}
/* should never happen */
drm_WARN_ON(state->base.dev, 1);
return NULL;
}
void intel_plane_update_noarm(struct intel_plane *plane,
const struct intel_crtc_state *crtc_state,
const struct intel_plane_state *plane_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
trace_intel_plane_update_noarm(plane, crtc);
if (plane->update_noarm)
plane->update_noarm(plane, crtc_state, plane_state);
}
void intel_plane_update_arm(struct intel_plane *plane,
const struct intel_crtc_state *crtc_state,
const struct intel_plane_state *plane_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
trace_intel_plane_update_arm(plane, crtc);
if (crtc_state->do_async_flip && plane->async_flip)
plane->async_flip(plane, crtc_state, plane_state, true);
else
plane->update_arm(plane, crtc_state, plane_state);
}
void intel_plane_disable_arm(struct intel_plane *plane,
const struct intel_crtc_state *crtc_state)
{
struct intel_crtc *crtc = to_intel_crtc(crtc_state->uapi.crtc);
trace_intel_plane_disable_arm(plane, crtc);
plane->disable_arm(plane, crtc_state);
}
void intel_crtc_planes_update_noarm(struct intel_atomic_state *state,
struct intel_crtc *crtc)
{
struct intel_crtc_state *new_crtc_state =
intel_atomic_get_new_crtc_state(state, crtc);
u32 update_mask = new_crtc_state->update_planes;
struct intel_plane_state *new_plane_state;
struct intel_plane *plane;
int i;
if (new_crtc_state->do_async_flip)
return;
/*
* Since we only write non-arming registers here,
* the order does not matter even for skl+.
*/
for_each_new_intel_plane_in_state(state, plane, new_plane_state, i) {
if (crtc->pipe != plane->pipe ||
!(update_mask & BIT(plane->id)))
continue;
/* TODO: for mailbox updates this should be skipped */
if (new_plane_state->uapi.visible ||
new_plane_state->planar_slave)
intel_plane_update_noarm(plane, new_crtc_state, new_plane_state);
}
}
static void skl_crtc_planes_update_arm(struct intel_atomic_state *state,
struct intel_crtc *crtc)
{
struct intel_crtc_state *old_crtc_state =
intel_atomic_get_old_crtc_state(state, crtc);
struct intel_crtc_state *new_crtc_state =
intel_atomic_get_new_crtc_state(state, crtc);
struct skl_ddb_entry ddb[I915_MAX_PLANES];
struct skl_ddb_entry ddb_y[I915_MAX_PLANES];
u32 update_mask = new_crtc_state->update_planes;
struct intel_plane *plane;
memcpy(ddb, old_crtc_state->wm.skl.plane_ddb,
sizeof(old_crtc_state->wm.skl.plane_ddb));
memcpy(ddb_y, old_crtc_state->wm.skl.plane_ddb_y,
sizeof(old_crtc_state->wm.skl.plane_ddb_y));
while ((plane = skl_next_plane_to_commit(state, crtc, ddb, ddb_y, &update_mask))) {
struct intel_plane_state *new_plane_state =
intel_atomic_get_new_plane_state(state, plane);
/*
* TODO: for mailbox updates intel_plane_update_noarm()
* would have to be called here as well.
*/
if (new_plane_state->uapi.visible ||
new_plane_state->planar_slave)
intel_plane_update_arm(plane, new_crtc_state, new_plane_state);
else
intel_plane_disable_arm(plane, new_crtc_state);
}
}
static void i9xx_crtc_planes_update_arm(struct intel_atomic_state *state,
struct intel_crtc *crtc)
{
struct intel_crtc_state *new_crtc_state =
intel_atomic_get_new_crtc_state(state, crtc);
u32 update_mask = new_crtc_state->update_planes;
struct intel_plane_state *new_plane_state;
struct intel_plane *plane;
int i;
for_each_new_intel_plane_in_state(state, plane, new_plane_state, i) {
if (crtc->pipe != plane->pipe ||
!(update_mask & BIT(plane->id)))
continue;
/*
* TODO: for mailbox updates intel_plane_update_noarm()
* would have to be called here as well.
*/
if (new_plane_state->uapi.visible)
intel_plane_update_arm(plane, new_crtc_state, new_plane_state);
else
intel_plane_disable_arm(plane, new_crtc_state);
}
}
void intel_crtc_planes_update_arm(struct intel_atomic_state *state,
struct intel_crtc *crtc)
{
struct drm_i915_private *i915 = to_i915(state->base.dev);
if (DISPLAY_VER(i915) >= 9)
skl_crtc_planes_update_arm(state, crtc);
else
i9xx_crtc_planes_update_arm(state, crtc);
}
int intel_atomic_plane_check_clipping(struct intel_plane_state *plane_state,
struct intel_crtc_state *crtc_state,
int min_scale, int max_scale,
bool can_position)
{
struct drm_i915_private *i915 = to_i915(plane_state->uapi.plane->dev);
struct drm_framebuffer *fb = plane_state->hw.fb;
struct drm_rect *src = &plane_state->uapi.src;
struct drm_rect *dst = &plane_state->uapi.dst;
const struct drm_rect *clip = &crtc_state->pipe_src;
unsigned int rotation = plane_state->hw.rotation;
int hscale, vscale;
if (!fb) {
plane_state->uapi.visible = false;
return 0;
}
drm_rect_rotate(src, fb->width << 16, fb->height << 16, rotation);
/* Check scaling */
hscale = drm_rect_calc_hscale(src, dst, min_scale, max_scale);
vscale = drm_rect_calc_vscale(src, dst, min_scale, max_scale);
if (hscale < 0 || vscale < 0) {
drm_dbg_kms(&i915->drm, "Invalid scaling of plane\n");
drm_rect_debug_print("src: ", src, true);
drm_rect_debug_print("dst: ", dst, false);
return -ERANGE;
}
/*
* FIXME: This might need further adjustment for seamless scaling
* with phase information, for the 2p2 and 2p1 scenarios.
*/
plane_state->uapi.visible = drm_rect_clip_scaled(src, dst, clip);
drm_rect_rotate_inv(src, fb->width << 16, fb->height << 16, rotation);
if (!can_position && plane_state->uapi.visible &&
!drm_rect_equals(dst, clip)) {
drm_dbg_kms(&i915->drm, "Plane must cover entire CRTC\n");
drm_rect_debug_print("dst: ", dst, false);
drm_rect_debug_print("clip: ", clip, false);
return -EINVAL;
}
/* final plane coordinates will be relative to the plane's pipe */
drm_rect_translate(dst, -clip->x1, -clip->y1);
return 0;
}
struct wait_rps_boost {
struct wait_queue_entry wait;
struct drm_crtc *crtc;
struct i915_request *request;
};
static int do_rps_boost(struct wait_queue_entry *_wait,
unsigned mode, int sync, void *key)
{
struct wait_rps_boost *wait = container_of(_wait, typeof(*wait), wait);
struct i915_request *rq = wait->request;
/*
* If we missed the vblank, but the request is already running it
* is reasonable to assume that it will complete before the next
* vblank without our intervention, so leave RPS alone.
*/
if (!i915_request_started(rq))
intel_rps_boost(rq);
i915_request_put(rq);
drm_crtc_vblank_put(wait->crtc);
list_del(&wait->wait.entry);
kfree(wait);
return 1;
}
static void add_rps_boost_after_vblank(struct drm_crtc *crtc,
struct dma_fence *fence)
{
struct wait_rps_boost *wait;
if (!dma_fence_is_i915(fence))
return;
if (DISPLAY_VER(to_i915(crtc->dev)) < 6)
return;
if (drm_crtc_vblank_get(crtc))
return;
wait = kmalloc(sizeof(*wait), GFP_KERNEL);
if (!wait) {
drm_crtc_vblank_put(crtc);
return;
}
wait->request = to_request(dma_fence_get(fence));
wait->crtc = crtc;
wait->wait.func = do_rps_boost;
wait->wait.flags = 0;
add_wait_queue(drm_crtc_vblank_waitqueue(crtc), &wait->wait);
}
/**
* intel_prepare_plane_fb - Prepare fb for usage on plane
* @_plane: drm plane to prepare for
* @_new_plane_state: the plane state being prepared
*
* Prepares a framebuffer for usage on a display plane. Generally this
* involves pinning the underlying object and updating the frontbuffer tracking
* bits. Some older platforms need special physical address handling for
* cursor planes.
*
* Returns 0 on success, negative error code on failure.
*/
static int
intel_prepare_plane_fb(struct drm_plane *_plane,
struct drm_plane_state *_new_plane_state)
{
struct i915_sched_attr attr = { .priority = I915_PRIORITY_DISPLAY };
struct intel_plane *plane = to_intel_plane(_plane);
struct intel_plane_state *new_plane_state =
to_intel_plane_state(_new_plane_state);
struct intel_atomic_state *state =
to_intel_atomic_state(new_plane_state->uapi.state);
struct drm_i915_private *dev_priv = to_i915(plane->base.dev);
const struct intel_plane_state *old_plane_state =
intel_atomic_get_old_plane_state(state, plane);
struct drm_i915_gem_object *obj = intel_fb_obj(new_plane_state->hw.fb);
struct drm_i915_gem_object *old_obj = intel_fb_obj(old_plane_state->hw.fb);
int ret;
if (old_obj) {
const struct intel_crtc_state *new_crtc_state =
intel_atomic_get_new_crtc_state(state,
to_intel_crtc(old_plane_state->hw.crtc));
/* Big Hammer, we also need to ensure that any pending
* MI_WAIT_FOR_EVENT inside a user batch buffer on the
* current scanout is retired before unpinning the old
* framebuffer. Note that we rely on userspace rendering
* into the buffer attached to the pipe they are waiting
* on. If not, userspace generates a GPU hang with IPEHR
* point to the MI_WAIT_FOR_EVENT.
*
* This should only fail upon a hung GPU, in which case we
* can safely continue.
*/
if (new_crtc_state && intel_crtc_needs_modeset(new_crtc_state)) {
ret = i915_sw_fence_await_reservation(&state->commit_ready,
old_obj->base.resv,
false, 0,
GFP_KERNEL);
if (ret < 0)
return ret;
}
}
if (new_plane_state->uapi.fence) { /* explicit fencing */
i915_gem_fence_wait_priority(new_plane_state->uapi.fence,
&attr);
ret = i915_sw_fence_await_dma_fence(&state->commit_ready,
new_plane_state->uapi.fence,
i915_fence_timeout(dev_priv),
GFP_KERNEL);
if (ret < 0)
return ret;
}
if (!obj)
return 0;
ret = intel_plane_pin_fb(new_plane_state);
if (ret)
return ret;
i915_gem_object_wait_priority(obj, 0, &attr);
if (!new_plane_state->uapi.fence) { /* implicit fencing */
struct dma_resv_iter cursor;
struct dma_fence *fence;
ret = i915_sw_fence_await_reservation(&state->commit_ready,
obj->base.resv, false,
i915_fence_timeout(dev_priv),
GFP_KERNEL);
if (ret < 0)
goto unpin_fb;
dma_resv_iter_begin(&cursor, obj->base.resv,
DMA_RESV_USAGE_WRITE);
dma_resv_for_each_fence_unlocked(&cursor, fence) {
add_rps_boost_after_vblank(new_plane_state->hw.crtc,
fence);
}
dma_resv_iter_end(&cursor);
} else {
add_rps_boost_after_vblank(new_plane_state->hw.crtc,
new_plane_state->uapi.fence);
}
/*
* We declare pageflips to be interactive and so merit a small bias
* towards upclocking to deliver the frame on time. By only changing
* the RPS thresholds to sample more regularly and aim for higher
* clocks we can hopefully deliver low power workloads (like kodi)
* that are not quite steady state without resorting to forcing
* maximum clocks following a vblank miss (see do_rps_boost()).
*/
if (!state->rps_interactive) {
intel_rps_mark_interactive(&to_gt(dev_priv)->rps, true);
state->rps_interactive = true;
}
return 0;
unpin_fb:
intel_plane_unpin_fb(new_plane_state);
return ret;
}
/**
* intel_cleanup_plane_fb - Cleans up an fb after plane use
* @plane: drm plane to clean up for
* @_old_plane_state: the state from the previous modeset
*
* Cleans up a framebuffer that has just been removed from a plane.
*/
static void
intel_cleanup_plane_fb(struct drm_plane *plane,
struct drm_plane_state *_old_plane_state)
{
struct intel_plane_state *old_plane_state =
to_intel_plane_state(_old_plane_state);
struct intel_atomic_state *state =
to_intel_atomic_state(old_plane_state->uapi.state);
struct drm_i915_private *dev_priv = to_i915(plane->dev);
struct drm_i915_gem_object *obj = intel_fb_obj(old_plane_state->hw.fb);
if (!obj)
return;
if (state->rps_interactive) {
intel_rps_mark_interactive(&to_gt(dev_priv)->rps, false);
state->rps_interactive = false;
}
/* Should only be called after a successful intel_prepare_plane_fb()! */
intel_plane_unpin_fb(old_plane_state);
}
static const struct drm_plane_helper_funcs intel_plane_helper_funcs = {
.prepare_fb = intel_prepare_plane_fb,
.cleanup_fb = intel_cleanup_plane_fb,
};
void intel_plane_helper_add(struct intel_plane *plane)
{
drm_plane_helper_add(&plane->base, &intel_plane_helper_funcs);
}
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