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drm/i915/skl: Allow scanning out Y and Yf fbs 

Skylake is able to scannout those tiling formats. We need to allow them
in the ADDFB ioctl and tell the harware about it.

v2: Rebased for addfb2 interface. (Tvrtko Ursulin)
v3: Rebased for fb modifier changes. (Tvrtko Ursulin)
v4: Don't allow Y tiled fbs just yet. (Tvrtko Ursulin)
v5: Check for stride alignment and max pitch. (Tvrtko Ursulin)
v6: Simplify maximum pitch check. (Ville Syrjälä)
v7: Drop the gen9 check since requirements are no different. (Ville Syrjälä)
v8: Gen2 has different X tiling stride. (Ville Syrjälä)

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Signed-off-by: Tvrtko Ursulin <tvrtko.ursulin@intel.com>
Reviewed-by: Damien Lespiau <damien.lespiau@intel.com> (v7)
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Damien Lespiau 2015-02-27 11:15:18 +00:00 committed by Daniel Vetter
parent b5ff6e1637
commit b321803dfb
3 changed files with 101 additions and 40 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

121
drivers/gpu/drm/i915/intel_display.c
View File

@ -2728,6 +2728,40 @@ static void ironlake_update_primary_plane(struct drm_crtc *crtc,
POSTING_READ(reg);
}
u32 intel_fb_stride_alignment(struct drm_device *dev, uint64_t fb_modifier,
uint32_t pixel_format)
{
u32 bits_per_pixel = drm_format_plane_cpp(pixel_format, 0) * 8;
/*
* The stride is either expressed as a multiple of 64 bytes
* chunks for linear buffers or in number of tiles for tiled
* buffers.
*/
switch (fb_modifier) {
case DRM_FORMAT_MOD_NONE:
return 64;
case I915_FORMAT_MOD_X_TILED:
if (INTEL_INFO(dev)->gen == 2)
return 128;
return 512;
case I915_FORMAT_MOD_Y_TILED:
/* No need to check for old gens and Y tiling since this is
* about the display engine and those will be blocked before
* we get here.
*/
return 128;
case I915_FORMAT_MOD_Yf_TILED:
if (bits_per_pixel == 8)
return 64;
else
return 128;
default:
MISSING_CASE(fb_modifier);
return 64;
}
}
static void skylake_update_primary_plane(struct drm_crtc *crtc,
struct drm_framebuffer *fb,
int x, int y)
@ -2735,10 +2769,9 @@ static void skylake_update_primary_plane(struct drm_crtc *crtc,
struct drm_device *dev = crtc->dev;
struct drm_i915_private *dev_priv = dev->dev_private;
struct intel_crtc *intel_crtc = to_intel_crtc(crtc);
struct intel_framebuffer *intel_fb;
struct drm_i915_gem_object *obj;
int pipe = intel_crtc->pipe;
u32 plane_ctl, stride;
u32 plane_ctl, stride_div;
if (!intel_crtc->primary_enabled) {
I915_WRITE(PLANE_CTL(pipe, 0), 0);
@ -2773,29 +2806,30 @@ static void skylake_update_primary_plane(struct drm_crtc *crtc,
BUG();
}
intel_fb = to_intel_framebuffer(fb);
obj = intel_fb->obj;
/*
* The stride is either expressed as a multiple of 64 bytes chunks for
* linear buffers or in number of tiles for tiled buffers.
*/
switch (fb->modifier[0]) {
case DRM_FORMAT_MOD_NONE:
stride = fb->pitches[0] >> 6;
break;
case I915_FORMAT_MOD_X_TILED:
plane_ctl |= PLANE_CTL_TILED_X;
stride = fb->pitches[0] >> 9;
break;
case I915_FORMAT_MOD_Y_TILED:
plane_ctl |= PLANE_CTL_TILED_Y;
break;
case I915_FORMAT_MOD_Yf_TILED:
plane_ctl |= PLANE_CTL_TILED_YF;
break;
default:
BUG();
MISSING_CASE(fb->modifier[0]);
}
plane_ctl |= PLANE_CTL_PLANE_GAMMA_DISABLE;
if (crtc->primary->state->rotation == BIT(DRM_ROTATE_180))
plane_ctl |= PLANE_CTL_ROTATE_180;
obj = intel_fb_obj(fb);
stride_div = intel_fb_stride_alignment(dev, fb->modifier[0],
fb->pixel_format);
I915_WRITE(PLANE_CTL(pipe, 0), plane_ctl);
DRM_DEBUG_KMS("Writing base %08lX %d,%d,%d,%d pitch=%d\n",
@ -2808,7 +2842,7 @@ static void skylake_update_primary_plane(struct drm_crtc *crtc,
I915_WRITE(PLANE_SIZE(pipe, 0),
(intel_crtc->config->pipe_src_h - 1) << 16 |
(intel_crtc->config->pipe_src_w - 1));
I915_WRITE(PLANE_STRIDE(pipe, 0), stride);
I915_WRITE(PLANE_STRIDE(pipe, 0), fb->pitches[0] / stride_div);
I915_WRITE(PLANE_SURF(pipe, 0), i915_gem_obj_ggtt_offset(obj));
POSTING_READ(PLANE_SURF(pipe, 0));
@ -12666,14 +12700,43 @@ static const struct drm_framebuffer_funcs intel_fb_funcs = {
.create_handle = intel_user_framebuffer_create_handle,
};
static
u32 intel_fb_pitch_limit(struct drm_device *dev, uint64_t fb_modifier,
uint32_t pixel_format)
{
u32 gen = INTEL_INFO(dev)->gen;
if (gen >= 9) {
/* "The stride in bytes must not exceed the of the size of 8K
* pixels and 32K bytes."
*/
return min(8192*drm_format_plane_cpp(pixel_format, 0), 32768);
} else if (gen >= 5 && !IS_VALLEYVIEW(dev)) {
return 32*1024;
} else if (gen >= 4) {
if (fb_modifier == I915_FORMAT_MOD_X_TILED)
return 16*1024;
else
return 32*1024;
} else if (gen >= 3) {
if (fb_modifier == I915_FORMAT_MOD_X_TILED)
return 8*1024;
else
return 16*1024;
} else {
/* XXX DSPC is limited to 4k tiled */
return 8*1024;
}
}
static int intel_framebuffer_init(struct drm_device *dev,
struct intel_framebuffer *intel_fb,
struct drm_mode_fb_cmd2 *mode_cmd,
struct drm_i915_gem_object *obj)
{
int aligned_height;
int pitch_limit;
int ret;
u32 pitch_limit, stride_alignment;
WARN_ON(!mutex_is_locked(&dev->struct_mutex));
@ -12699,31 +12762,19 @@ static int intel_framebuffer_init(struct drm_device *dev,
return -EINVAL;
}
if (mode_cmd->pitches[0] & 63) {
DRM_DEBUG("pitch (%d) must be at least 64 byte aligned\n",
mode_cmd->pitches[0]);
stride_alignment = intel_fb_stride_alignment(dev, mode_cmd->modifier[0],
mode_cmd->pixel_format);
if (mode_cmd->pitches[0] & (stride_alignment - 1)) {
DRM_DEBUG("pitch (%d) must be at least %u byte aligned\n",
mode_cmd->pitches[0], stride_alignment);
return -EINVAL;
}
if (INTEL_INFO(dev)->gen >= 5 && !IS_VALLEYVIEW(dev)) {
pitch_limit = 32*1024;
} else if (INTEL_INFO(dev)->gen >= 4) {
if (mode_cmd->modifier[0] == I915_FORMAT_MOD_X_TILED)
pitch_limit = 16*1024;
else
pitch_limit = 32*1024;
} else if (INTEL_INFO(dev)->gen >= 3) {
if (mode_cmd->modifier[0] == I915_FORMAT_MOD_X_TILED)
pitch_limit = 8*1024;
else
pitch_limit = 16*1024;
} else
/* XXX DSPC is limited to 4k tiled */
pitch_limit = 8*1024;
pitch_limit = intel_fb_pitch_limit(dev, mode_cmd->modifier[0],
mode_cmd->pixel_format);
if (mode_cmd->pitches[0] > pitch_limit) {
DRM_DEBUG("%s pitch (%d) must be at less than %d\n",
mode_cmd->modifier[0] == I915_FORMAT_MOD_X_TILED ?
DRM_DEBUG("%s pitch (%u) must be at less than %d\n",
mode_cmd->modifier[0] != DRM_FORMAT_MOD_NONE ?
"tiled" : "linear",
mode_cmd->pitches[0], pitch_limit);
return -EINVAL;

2
drivers/gpu/drm/i915/intel_drv.h
View File

@ -903,6 +903,8 @@ int intel_fb_align_height(struct drm_device *dev, int height,
uint64_t fb_format_modifier);
void intel_fb_obj_flush(struct drm_i915_gem_object *obj, bool retire);
u32 intel_fb_stride_alignment(struct drm_device *dev, uint64_t fb_modifier,
uint32_t pixel_format);
/* intel_audio.c */
void intel_init_audio(struct drm_device *dev);

18
drivers/gpu/drm/i915/intel_sprite.c
View File

@ -189,7 +189,7 @@ skl_update_plane(struct drm_plane *drm_plane, struct drm_crtc *crtc,
struct intel_plane *intel_plane = to_intel_plane(drm_plane);
const int pipe = intel_plane->pipe;
const int plane = intel_plane->plane + 1;
u32 plane_ctl, stride;
u32 plane_ctl, stride_div;
int pixel_size = drm_format_plane_cpp(fb->pixel_format, 0);
plane_ctl = I915_READ(PLANE_CTL(pipe, plane));
@ -247,15 +247,20 @@ skl_update_plane(struct drm_plane *drm_plane, struct drm_crtc *crtc,
switch (fb->modifier[0]) {
case DRM_FORMAT_MOD_NONE:
stride = fb->pitches[0] >> 6;
break;
case I915_FORMAT_MOD_X_TILED:
plane_ctl |= PLANE_CTL_TILED_X;
stride = fb->pitches[0] >> 9;
break;
case I915_FORMAT_MOD_Y_TILED:
plane_ctl |= PLANE_CTL_TILED_Y;
break;
case I915_FORMAT_MOD_Yf_TILED:
plane_ctl |= PLANE_CTL_TILED_YF;
break;
default:
BUG();
MISSING_CASE(fb->modifier[0]);
}
if (drm_plane->state->rotation == BIT(DRM_ROTATE_180))
plane_ctl |= PLANE_CTL_ROTATE_180;
@ -266,6 +271,9 @@ skl_update_plane(struct drm_plane *drm_plane, struct drm_crtc *crtc,
pixel_size, true,
src_w != crtc_w || src_h != crtc_h);
stride_div = intel_fb_stride_alignment(dev, fb->modifier[0],
fb->pixel_format);
/* Sizes are 0 based */
src_w--;
src_h--;
@ -273,7 +281,7 @@ skl_update_plane(struct drm_plane *drm_plane, struct drm_crtc *crtc,
crtc_h--;
I915_WRITE(PLANE_OFFSET(pipe, plane), (y << 16) | x);
I915_WRITE(PLANE_STRIDE(pipe, plane), stride);
I915_WRITE(PLANE_STRIDE(pipe, plane), fb->pitches[0] / stride_div);
I915_WRITE(PLANE_POS(pipe, plane), (crtc_y << 16) | crtc_x);
I915_WRITE(PLANE_SIZE(pipe, plane), (crtc_h << 16) | crtc_w);
I915_WRITE(PLANE_CTL(pipe, plane), plane_ctl);