| Message ID | 1499669605-3060-2-git-send-email-vidya.srinivas@intel.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
FYI: The latest version of the CCS modifier patches for mesa are now reviewed: https://patchwork.freedesktop.org/series/27213/ I'll be landing the prep-work patches soon. The final couple of patches are just waiting on the I915_FORMAT_MOD_Y_TILED_CCS in drm_fourcc.h to land in the kernel. On Sun, Jul 9, 2017 at 11:53 PM, Vidya Srinivas <vidya.srinivas@intel.com> wrote: > From: Ville Syrjälä <ville.syrjala@linux.intel.com> > > SKL+ display engine can scan out certain kinds of compressed surfaces > produced by the render engine. This involved telling the display engine > the location of the color control surfae (CCS) which describes which > parts of the main surface are compressed and which are not. The location > of CCS is provided by userspace as just another plane with its own offset. > > By providing our own format information for the CCS formats, we should > be able to make framebuffer_check() do the right thing for the CCS > surface as well. > > Note that we'll return the same format info for both Y and Yf tiled > format as that's what happens with the non-CCS Y vs. Yf as well. If > desired, we could potentially return a unique pointer for each > pixel_format+tiling+ccs combination, in which case we immediately be > able to tell if any of that stuff changed by just comparing the > pointers. But that does sound a bit wasteful space wise. > > v2: Drop the 'dev' argument from the hook > v3: Include the description of the CCS surface layout > v4: Pretend CCS tiles are regular 128 byte wide Y tiles (Jason) > > Cc: Daniel Vetter <daniel@ffwll.ch> > Cc: Ben Widawsky <ben@bwidawsk.net> > Cc: Jason Ekstrand <jason@jlekstrand.net> > Reviewed-by: Ben Widawsky <ben@bwidawsk.net> (v3) > Signed-off-by: Ville Syrjä <ville.syrjala@linux.intel.com> > --- > drivers/gpu/drm/drm_fourcc.c | 2 +- > drivers/gpu/drm/i915/intel_display.c | 37 ++++++++++++++++++++++++++++++ > ++++++ > include/drm/drm_mode_config.h | 3 ++- > include/uapi/drm/drm_fourcc.h | 3 +++ > 4 files changed, 43 insertions(+), 2 deletions(-) > > diff --git a/drivers/gpu/drm/drm_fourcc.c b/drivers/gpu/drm/drm_fourcc.c > index 9c0152d..50da618 100644 > --- a/drivers/gpu/drm/drm_fourcc.c > +++ b/drivers/gpu/drm/drm_fourcc.c > @@ -222,7 +222,7 @@ const struct drm_format_info *drm_format_info(u32 > format) > const struct drm_format_info *info = NULL; > > if (dev->mode_config.funcs->get_format_info) > - info = dev->mode_config.funcs->get_format_info(mode_cmd); > + info = dev->mode_config.funcs->get_format_info(dev, > mode_cmd); > > if (!info) > info = drm_format_info(mode_cmd->pixel_format); > diff --git a/drivers/gpu/drm/i915/intel_display.c > b/drivers/gpu/drm/i915/intel_display.c > index 2144adc..9fb2f37 100644 > --- a/drivers/gpu/drm/i915/intel_display.c > +++ b/drivers/gpu/drm/i915/intel_display.c > @@ -2433,6 +2433,42 @@ static unsigned int intel_fb_modifier_to_tiling(uint64_t > fb_modifier) > } > } > > +static const struct drm_format_info ccs_formats[] = { > + { .format = DRM_FORMAT_XRGB8888, .depth = 24, .num_planes = 2, > .cpp = { 4, 1, }, .hsub = 16, .vsub = 8, }, > + { .format = DRM_FORMAT_XBGR8888, .depth = 24, .num_planes = 2, > .cpp = { 4, 1, }, .hsub = 16, .vsub = 8, }, > + { .format = DRM_FORMAT_ARGB8888, .depth = 32, .num_planes = 2, > .cpp = { 4, 1, }, .hsub = 16, .vsub = 8, }, > + { .format = DRM_FORMAT_ABGR8888, .depth = 32, .num_planes = 2, > .cpp = { 4, 1, }, .hsub = 16, .vsub = 8, }, > +}; > + > +static const struct drm_format_info * > +lookup_format_info(const struct drm_format_info formats[], > + int num_formats, u32 format) > +{ > + int i; > + > + for (i = 0; i < num_formats; i++) { > + if (formats[i].format == format) > + return &formats[i]; > + } > + > + return NULL; > +} > + > +static const struct drm_format_info * > +intel_get_format_info(struct drm_device *dev, > + const struct drm_mode_fb_cmd2 *cmd) > +{ > + switch (cmd->modifier[0]) { > + case I915_FORMAT_MOD_Y_TILED_CCS: > + case I915_FORMAT_MOD_Yf_TILED_CCS: > + return lookup_format_info(ccs_formats, > + ARRAY_SIZE(ccs_formats), > + cmd->pixel_format); > + default: > + return NULL; > + } > +} > + > static int > intel_fill_fb_info(struct drm_i915_private *dev_priv, > struct drm_framebuffer *fb) > @@ -14622,6 +14658,7 @@ static void intel_atomic_state_free(struct > drm_atomic_state *state) > > static const struct drm_mode_config_funcs intel_mode_funcs = { > .fb_create = intel_user_framebuffer_create, > + .get_format_info = intel_get_format_info, > .output_poll_changed = intel_fbdev_output_poll_changed, > .atomic_check = intel_atomic_check, > .atomic_commit = intel_atomic_commit, > diff --git a/include/drm/drm_mode_config.h b/include/drm/drm_mode_config.h > index 4298171..f0d3d38 100644 > --- a/include/drm/drm_mode_config.h > +++ b/include/drm/drm_mode_config.h > @@ -81,7 +81,8 @@ struct drm_mode_config_funcs { > * The format information specific to the given fb metadata, or > * NULL if none is found. > */ > - const struct drm_format_info *(*get_format_info)(const struct > drm_mode_fb_cmd2 *mode_cmd); > + const struct drm_format_info *(*get_format_info)(struct drm_device > *dev, > + const struct drm_mode_fb_cmd2 *mode_cmd); > > /** > * @output_poll_changed: > diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h > index 7586c46..ee59109 100644 > --- a/include/uapi/drm/drm_fourcc.h > +++ b/include/uapi/drm/drm_fourcc.h > @@ -252,6 +252,9 @@ > */ > #define I915_FORMAT_MOD_Yf_TILED fourcc_mod_code(INTEL, 3) > > +#define I915_FORMAT_MOD_Y_TILED_CCS fourcc_mod_code(INTEL, 4) > +#define I915_FORMAT_MOD_Yf_TILED_CCS fourcc_mod_code(INTEL, 5) > + > /* > * Tiled, NV12MT, grouped in 64 (pixels) x 32 (lines) -sized macroblocks > * > -- > 1.9.1 > >
diff --git a/drivers/gpu/drm/drm_fourcc.c b/drivers/gpu/drm/drm_fourcc.c index 9c0152d..50da618 100644 --- a/drivers/gpu/drm/drm_fourcc.c +++ b/drivers/gpu/drm/drm_fourcc.c @@ -222,7 +222,7 @@ const struct drm_format_info *drm_format_info(u32 format) const struct drm_format_info *info = NULL; if (dev->mode_config.funcs->get_format_info) - info = dev->mode_config.funcs->get_format_info(mode_cmd); + info = dev->mode_config.funcs->get_format_info(dev, mode_cmd); if (!info) info = drm_format_info(mode_cmd->pixel_format); diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index 2144adc..9fb2f37 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -2433,6 +2433,42 @@ static unsigned int intel_fb_modifier_to_tiling(uint64_t fb_modifier) } } +static const struct drm_format_info ccs_formats[] = { + { .format = DRM_FORMAT_XRGB8888, .depth = 24, .num_planes = 2, .cpp = { 4, 1, }, .hsub = 16, .vsub = 8, }, + { .format = DRM_FORMAT_XBGR8888, .depth = 24, .num_planes = 2, .cpp = { 4, 1, }, .hsub = 16, .vsub = 8, }, + { .format = DRM_FORMAT_ARGB8888, .depth = 32, .num_planes = 2, .cpp = { 4, 1, }, .hsub = 16, .vsub = 8, }, + { .format = DRM_FORMAT_ABGR8888, .depth = 32, .num_planes = 2, .cpp = { 4, 1, }, .hsub = 16, .vsub = 8, }, +}; + +static const struct drm_format_info * +lookup_format_info(const struct drm_format_info formats[], + int num_formats, u32 format) +{ + int i; + + for (i = 0; i < num_formats; i++) { + if (formats[i].format == format) + return &formats[i]; + } + + return NULL; +} + +static const struct drm_format_info * +intel_get_format_info(struct drm_device *dev, + const struct drm_mode_fb_cmd2 *cmd) +{ + switch (cmd->modifier[0]) { + case I915_FORMAT_MOD_Y_TILED_CCS: + case I915_FORMAT_MOD_Yf_TILED_CCS: + return lookup_format_info(ccs_formats, + ARRAY_SIZE(ccs_formats), + cmd->pixel_format); + default: + return NULL; + } +} + static int intel_fill_fb_info(struct drm_i915_private *dev_priv, struct drm_framebuffer *fb) @@ -14622,6 +14658,7 @@ static void intel_atomic_state_free(struct drm_atomic_state *state) static const struct drm_mode_config_funcs intel_mode_funcs = { .fb_create = intel_user_framebuffer_create, + .get_format_info = intel_get_format_info, .output_poll_changed = intel_fbdev_output_poll_changed, .atomic_check = intel_atomic_check, .atomic_commit = intel_atomic_commit, diff --git a/include/drm/drm_mode_config.h b/include/drm/drm_mode_config.h index 4298171..f0d3d38 100644 --- a/include/drm/drm_mode_config.h +++ b/include/drm/drm_mode_config.h @@ -81,7 +81,8 @@ struct drm_mode_config_funcs { * The format information specific to the given fb metadata, or * NULL if none is found. */ - const struct drm_format_info *(*get_format_info)(const struct drm_mode_fb_cmd2 *mode_cmd); + const struct drm_format_info *(*get_format_info)(struct drm_device *dev, + const struct drm_mode_fb_cmd2 *mode_cmd); /** * @output_poll_changed: diff --git a/include/uapi/drm/drm_fourcc.h b/include/uapi/drm/drm_fourcc.h index 7586c46..ee59109 100644 --- a/include/uapi/drm/drm_fourcc.h +++ b/include/uapi/drm/drm_fourcc.h @@ -252,6 +252,9 @@ */ #define I915_FORMAT_MOD_Yf_TILED fourcc_mod_code(INTEL, 3) +#define I915_FORMAT_MOD_Y_TILED_CCS fourcc_mod_code(INTEL, 4) +#define I915_FORMAT_MOD_Yf_TILED_CCS fourcc_mod_code(INTEL, 5) + /* * Tiled, NV12MT, grouped in 64 (pixels) x 32 (lines) -sized macroblocks *