[Intel-gfx] [PATCH v2 02/11] drm/i915: Move intel_get_format_info() to intel_fb.c

Imre Deak
2021-10-08T00:19:39Z

Move the function retrieving the format override information for a given
format/modifier to intel_fb.c. We can store a pointer to the format list
in each modifier's descriptor instead of the corresponding switch/case
logic, avoiding the listing of the modifiers twice.

v2: Handle invalid modifiers in intel_fb_get_format_info() passed from
userspace.

Signed-off-by: Imre Deak <imre.deak@intel.com>
---
drivers/gpu/drm/i915/display/intel_display.c | 132 +--------------
drivers/gpu/drm/i915/display/intel_fb.c | 163 +++++++++++++++++++
drivers/gpu/drm/i915/display/intel_fb.h | 3 +
3 files changed, 167 insertions(+), 131 deletions(-)

diff --git a/drivers/gpu/drm/i915/display/intel_display.c b/drivers/gpu/drm/i915/display/intel_display.c
index 4f0badb11bbba..90802d16fbf91 100644
--- a/drivers/gpu/drm/i915/display/intel_display.c
+++ b/drivers/gpu/drm/i915/display/intel_display.c
@@ -1087,136 +1087,6 @@ void intel_add_fb_offsets(int *x, int *y,
*y += state->view.color_plane[color_plane].y;
}

-/*
- * From the Sky Lake PRM:
- * "The Color Control Surface (CCS) contains the compression status of
- * the cache-line pairs. The compression state of the cache-line pair
- * is specified by 2 bits in the CCS. Each CCS cache-line represents
- * an area on the main surface of 16 x16 sets of 128 byte Y-tiled
- * cache-line-pairs. CCS is always Y tiled."
- *
- * Since cache line pairs refers to horizontally adjacent cache lines,
- * each cache line in the CCS corresponds to an area of 32x16 cache
- * lines on the main surface. Since each pixel is 4 bytes, this gives
- * us a ratio of one byte in the CCS for each 8x16 pixels in the
- * main surface.
- */
-static const struct drm_format_info skl_ccs_formats[] = {
- { .format = DRM_FORMAT_XRGB8888, .depth = 24, .num_planes = 2,
- .cpp = { 4, 1, }, .hsub = 8, .vsub = 16, },
- { .format = DRM_FORMAT_XBGR8888, .depth = 24, .num_planes = 2,
- .cpp = { 4, 1, }, .hsub = 8, .vsub = 16, },
- { .format = DRM_FORMAT_ARGB8888, .depth = 32, .num_planes = 2,
- .cpp = { 4, 1, }, .hsub = 8, .vsub = 16, .has_alpha = true, },
- { .format = DRM_FORMAT_ABGR8888, .depth = 32, .num_planes = 2,
- .cpp = { 4, 1, }, .hsub = 8, .vsub = 16, .has_alpha = true, },
-};
-
-/*
- * Gen-12 compression uses 4 bits of CCS data for each cache line pair in the
- * main surface. And each 64B CCS cache line represents an area of 4x1 Y-tiles
- * in the main surface. With 4 byte pixels and each Y-tile having dimensions of
- * 32x32 pixels, the ratio turns out to 1B in the CCS for every 2x32 pixels in
- * the main surface.
- */
-static const struct drm_format_info gen12_ccs_formats[] = {
- { .format = DRM_FORMAT_XRGB8888, .depth = 24, .num_planes = 2,
- .char_per_block = { 4, 1 }, .block_w = { 1, 2 }, .block_h = { 1, 1 },
- .hsub = 1, .vsub = 1, },
- { .format = DRM_FORMAT_XBGR8888, .depth = 24, .num_planes = 2,
- .char_per_block = { 4, 1 }, .block_w = { 1, 2 }, .block_h = { 1, 1 },
- .hsub = 1, .vsub = 1, },
- { .format = DRM_FORMAT_ARGB8888, .depth = 32, .num_planes = 2,
- .char_per_block = { 4, 1 }, .block_w = { 1, 2 }, .block_h = { 1, 1 },
- .hsub = 1, .vsub = 1, .has_alpha = true },
- { .format = DRM_FORMAT_ABGR8888, .depth = 32, .num_planes = 2,
- .char_per_block = { 4, 1 }, .block_w = { 1, 2 }, .block_h = { 1, 1 },
- .hsub = 1, .vsub = 1, .has_alpha = true },
- { .format = DRM_FORMAT_YUYV, .num_planes = 2,
- .char_per_block = { 2, 1 }, .block_w = { 1, 2 }, .block_h = { 1, 1 },
- .hsub = 2, .vsub = 1, .is_yuv = true },
- { .format = DRM_FORMAT_YVYU, .num_planes = 2,
- .char_per_block = { 2, 1 }, .block_w = { 1, 2 }, .block_h = { 1, 1 },
- .hsub = 2, .vsub = 1, .is_yuv = true },
- { .format = DRM_FORMAT_UYVY, .num_planes = 2,
- .char_per_block = { 2, 1 }, .block_w = { 1, 2 }, .block_h = { 1, 1 },
- .hsub = 2, .vsub = 1, .is_yuv = true },
- { .format = DRM_FORMAT_VYUY, .num_planes = 2,
- .char_per_block = { 2, 1 }, .block_w = { 1, 2 }, .block_h = { 1, 1 },
- .hsub = 2, .vsub = 1, .is_yuv = true },
- { .format = DRM_FORMAT_XYUV8888, .num_planes = 2,
- .char_per_block = { 4, 1 }, .block_w = { 1, 2 }, .block_h = { 1, 1 },
- .hsub = 1, .vsub = 1, .is_yuv = true },
- { .format = DRM_FORMAT_NV12, .num_planes = 4,
- .char_per_block = { 1, 2, 1, 1 }, .block_w = { 1, 1, 4, 4 }, .block_h = { 1, 1, 1, 1 },
- .hsub = 2, .vsub = 2, .is_yuv = true },
- { .format = DRM_FORMAT_P010, .num_planes = 4,
- .char_per_block = { 2, 4, 1, 1 }, .block_w = { 1, 1, 2, 2 }, .block_h = { 1, 1, 1, 1 },
- .hsub = 2, .vsub = 2, .is_yuv = true },
- { .format = DRM_FORMAT_P012, .num_planes = 4,
- .char_per_block = { 2, 4, 1, 1 }, .block_w = { 1, 1, 2, 2 }, .block_h = { 1, 1, 1, 1 },
- .hsub = 2, .vsub = 2, .is_yuv = true },
- { .format = DRM_FORMAT_P016, .num_planes = 4,
- .char_per_block = { 2, 4, 1, 1 }, .block_w = { 1, 1, 2, 2 }, .block_h = { 1, 1, 1, 1 },
- .hsub = 2, .vsub = 2, .is_yuv = true },
-};
-
-/*
- * Same as gen12_ccs_formats[] above, but with additional surface used
- * to pass Clear Color information in plane 2 with 64 bits of data.
- */
-static const struct drm_format_info gen12_ccs_cc_formats[] = {
- { .format = DRM_FORMAT_XRGB8888, .depth = 24, .num_planes = 3,
- .char_per_block = { 4, 1, 0 }, .block_w = { 1, 2, 2 }, .block_h = { 1, 1, 1 },
- .hsub = 1, .vsub = 1, },
- { .format = DRM_FORMAT_XBGR8888, .depth = 24, .num_planes = 3,
- .char_per_block = { 4, 1, 0 }, .block_w = { 1, 2, 2 }, .block_h = { 1, 1, 1 },
- .hsub = 1, .vsub = 1, },
- { .format = DRM_FORMAT_ARGB8888, .depth = 32, .num_planes = 3,
- .char_per_block = { 4, 1, 0 }, .block_w = { 1, 2, 2 }, .block_h = { 1, 1, 1 },
- .hsub = 1, .vsub = 1, .has_alpha = true },
- { .format = DRM_FORMAT_ABGR8888, .depth = 32, .num_planes = 3,
- .char_per_block = { 4, 1, 0 }, .block_w = { 1, 2, 2 }, .block_h = { 1, 1, 1 },
- .hsub = 1, .vsub = 1, .has_alpha = true },
-};
-
-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(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(skl_ccs_formats,
- ARRAY_SIZE(skl_ccs_formats),
- cmd->pixel_format);
- case I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS:
- case I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS:
- return lookup_format_info(gen12_ccs_formats,
- ARRAY_SIZE(gen12_ccs_formats),
- cmd->pixel_format);
- case I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC:
- return lookup_format_info(gen12_ccs_cc_formats,
- ARRAY_SIZE(gen12_ccs_cc_formats),
- cmd->pixel_format);
- default:
- return NULL;
- }
-}
-
u32 intel_plane_fb_max_stride(struct drm_i915_private *dev_priv,
u32 pixel_format, u64 modifier)
{
@@ -11270,7 +11140,7 @@ intel_mode_valid_max_plane_size(struct drm_i915_private *dev_priv,

static const struct drm_mode_config_funcs intel_mode_funcs = {
.fb_create = intel_user_framebuffer_create,
- .get_format_info = intel_get_format_info,
+ .get_format_info = intel_fb_get_format_info,
.output_poll_changed = intel_fbdev_output_poll_changed,
.mode_valid = intel_mode_valid,
.atomic_check = intel_atomic_check,
diff --git a/drivers/gpu/drm/i915/display/intel_fb.c b/drivers/gpu/drm/i915/display/intel_fb.c
index 11a4c3e81cead..920de857ffa28 100644
--- a/drivers/gpu/drm/i915/display/intel_fb.c
+++ b/drivers/gpu/drm/i915/display/intel_fb.c
@@ -13,9 +13,108 @@

#define check_array_bounds(i915, a, i) drm_WARN_ON(&(i915)->drm, (i) >= ARRAY_SIZE(a))

+/*
+ * From the Sky Lake PRM:
+ * "The Color Control Surface (CCS) contains the compression status of
+ * the cache-line pairs. The compression state of the cache-line pair
+ * is specified by 2 bits in the CCS. Each CCS cache-line represents
+ * an area on the main surface of 16 x16 sets of 128 byte Y-tiled
+ * cache-line-pairs. CCS is always Y tiled."
+ *
+ * Since cache line pairs refers to horizontally adjacent cache lines,
+ * each cache line in the CCS corresponds to an area of 32x16 cache
+ * lines on the main surface. Since each pixel is 4 bytes, this gives
+ * us a ratio of one byte in the CCS for each 8x16 pixels in the
+ * main surface.
+ */
+static const struct drm_format_info skl_ccs_formats[] = {
+ { .format = DRM_FORMAT_XRGB8888, .depth = 24, .num_planes = 2,
+ .cpp = { 4, 1, }, .hsub = 8, .vsub = 16, },
+ { .format = DRM_FORMAT_XBGR8888, .depth = 24, .num_planes = 2,
+ .cpp = { 4, 1, }, .hsub = 8, .vsub = 16, },
+ { .format = DRM_FORMAT_ARGB8888, .depth = 32, .num_planes = 2,
+ .cpp = { 4, 1, }, .hsub = 8, .vsub = 16, .has_alpha = true, },
+ { .format = DRM_FORMAT_ABGR8888, .depth = 32, .num_planes = 2,
+ .cpp = { 4, 1, }, .hsub = 8, .vsub = 16, .has_alpha = true, },
+};
+
+/*
+ * Gen-12 compression uses 4 bits of CCS data for each cache line pair in the
+ * main surface. And each 64B CCS cache line represents an area of 4x1 Y-tiles
+ * in the main surface. With 4 byte pixels and each Y-tile having dimensions of
+ * 32x32 pixels, the ratio turns out to 1B in the CCS for every 2x32 pixels in
+ * the main surface.
+ */
+static const struct drm_format_info gen12_ccs_formats[] = {
+ { .format = DRM_FORMAT_XRGB8888, .depth = 24, .num_planes = 2,
+ .char_per_block = { 4, 1 }, .block_w = { 1, 2 }, .block_h = { 1, 1 },
+ .hsub = 1, .vsub = 1, },
+ { .format = DRM_FORMAT_XBGR8888, .depth = 24, .num_planes = 2,
+ .char_per_block = { 4, 1 }, .block_w = { 1, 2 }, .block_h = { 1, 1 },
+ .hsub = 1, .vsub = 1, },
+ { .format = DRM_FORMAT_ARGB8888, .depth = 32, .num_planes = 2,
+ .char_per_block = { 4, 1 }, .block_w = { 1, 2 }, .block_h = { 1, 1 },
+ .hsub = 1, .vsub = 1, .has_alpha = true },
+ { .format = DRM_FORMAT_ABGR8888, .depth = 32, .num_planes = 2,
+ .char_per_block = { 4, 1 }, .block_w = { 1, 2 }, .block_h = { 1, 1 },
+ .hsub = 1, .vsub = 1, .has_alpha = true },
+ { .format = DRM_FORMAT_YUYV, .num_planes = 2,
+ .char_per_block = { 2, 1 }, .block_w = { 1, 2 }, .block_h = { 1, 1 },
+ .hsub = 2, .vsub = 1, .is_yuv = true },
+ { .format = DRM_FORMAT_YVYU, .num_planes = 2,
+ .char_per_block = { 2, 1 }, .block_w = { 1, 2 }, .block_h = { 1, 1 },
+ .hsub = 2, .vsub = 1, .is_yuv = true },
+ { .format = DRM_FORMAT_UYVY, .num_planes = 2,
+ .char_per_block = { 2, 1 }, .block_w = { 1, 2 }, .block_h = { 1, 1 },
+ .hsub = 2, .vsub = 1, .is_yuv = true },
+ { .format = DRM_FORMAT_VYUY, .num_planes = 2,
+ .char_per_block = { 2, 1 }, .block_w = { 1, 2 }, .block_h = { 1, 1 },
+ .hsub = 2, .vsub = 1, .is_yuv = true },
+ { .format = DRM_FORMAT_XYUV8888, .num_planes = 2,
+ .char_per_block = { 4, 1 }, .block_w = { 1, 2 }, .block_h = { 1, 1 },
+ .hsub = 1, .vsub = 1, .is_yuv = true },
+ { .format = DRM_FORMAT_NV12, .num_planes = 4,
+ .char_per_block = { 1, 2, 1, 1 }, .block_w = { 1, 1, 4, 4 }, .block_h = { 1, 1, 1, 1 },
+ .hsub = 2, .vsub = 2, .is_yuv = true },
+ { .format = DRM_FORMAT_P010, .num_planes = 4,
+ .char_per_block = { 2, 4, 1, 1 }, .block_w = { 1, 1, 2, 2 }, .block_h = { 1, 1, 1, 1 },
+ .hsub = 2, .vsub = 2, .is_yuv = true },
+ { .format = DRM_FORMAT_P012, .num_planes = 4,
+ .char_per_block = { 2, 4, 1, 1 }, .block_w = { 1, 1, 2, 2 }, .block_h = { 1, 1, 1, 1 },
+ .hsub = 2, .vsub = 2, .is_yuv = true },
+ { .format = DRM_FORMAT_P016, .num_planes = 4,
+ .char_per_block = { 2, 4, 1, 1 }, .block_w = { 1, 1, 2, 2 }, .block_h = { 1, 1, 1, 1 },
+ .hsub = 2, .vsub = 2, .is_yuv = true },
+};
+
+/*
+ * Same as gen12_ccs_formats[] above, but with additional surface used
+ * to pass Clear Color information in plane 2 with 64 bits of data.
+ */
+static const struct drm_format_info gen12_ccs_cc_formats[] = {
+ { .format = DRM_FORMAT_XRGB8888, .depth = 24, .num_planes = 3,
+ .char_per_block = { 4, 1, 0 }, .block_w = { 1, 2, 2 }, .block_h = { 1, 1, 1 },
+ .hsub = 1, .vsub = 1, },
+ { .format = DRM_FORMAT_XBGR8888, .depth = 24, .num_planes = 3,
+ .char_per_block = { 4, 1, 0 }, .block_w = { 1, 2, 2 }, .block_h = { 1, 1, 1 },
+ .hsub = 1, .vsub = 1, },
+ { .format = DRM_FORMAT_ARGB8888, .depth = 32, .num_planes = 3,
+ .char_per_block = { 4, 1, 0 }, .block_w = { 1, 2, 2 }, .block_h = { 1, 1, 1 },
+ .hsub = 1, .vsub = 1, .has_alpha = true },
+ { .format = DRM_FORMAT_ABGR8888, .depth = 32, .num_planes = 3,
+ .char_per_block = { 4, 1, 0 }, .block_w = { 1, 2, 2 }, .block_h = { 1, 1, 1 },
+ .hsub = 1, .vsub = 1, .has_alpha = true },
+};
+
+#define FORMAT_OVERRIDE(format_list) \
+ .formats = format_list, \
+ .format_count = ARRAY_SIZE(format_list)
+
const struct intel_modifier_desc {
u64 id;
u64 display_versions;
+ const struct drm_format_info *formats;
+ int format_count;
u8 is_linear:1;

struct {
@@ -49,33 +148,97 @@ const struct intel_modifier_desc {
.display_versions = DISPLAY_VER_MASK(9, 11),

.ccs.type = INTEL_CCS_RC,
+
+ FORMAT_OVERRIDE(skl_ccs_formats),
},
{
.id = I915_FORMAT_MOD_Yf_TILED_CCS,
.display_versions = DISPLAY_VER_MASK(9, 11),

.ccs.type = INTEL_CCS_RC,
+
+ FORMAT_OVERRIDE(skl_ccs_formats),
},
{
.id = I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS,
.display_versions = DISPLAY_VER_MASK(12, 13),

.ccs.type = INTEL_CCS_RC,
+
+ FORMAT_OVERRIDE(gen12_ccs_formats),
},
{
.id = I915_FORMAT_MOD_Y_TILED_GEN12_RC_CCS_CC,
.display_versions = DISPLAY_VER_MASK(12, 13),

.ccs.type = INTEL_CCS_RC_CC,
+
+ FORMAT_OVERRIDE(gen12_ccs_cc_formats),
},
{
.id = I915_FORMAT_MOD_Y_TILED_GEN12_MC_CCS,
.display_versions = DISPLAY_VER_MASK(12, 13),

.ccs.type = INTEL_CCS_MC,
+
+ FORMAT_OVERRIDE(gen12_ccs_formats),
},
};

+static const struct intel_modifier_desc *lookup_modifier_or_null(u64 modifier)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(intel_modifiers); i++)
+ if (intel_modifiers[i].id == modifier)
+ return &intel_modifiers[i];
+
+ return NULL;
+}
+
+static const struct intel_modifier_desc *lookup_modifier(u64 modifier)
+{
+ const struct intel_modifier_desc *md = lookup_modifier_or_null(modifier);
+
+ if (WARN_ON(!md))
+ return &intel_modifiers[0];
+
+ return md;
+}
+
+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;
+}
+
+/**
+ * intel_fb_get_format_info: Get a modifier specific format information
+ * @cmd: FB add command structure
+ *
+ * Returns:
+ * Returns the format information for @cmd->pixel_format specific to @cmd->modifier[0],
+ * or %NULL if the modifier doesn't override the format.
+ */
+const struct drm_format_info *
+intel_fb_get_format_info(const struct drm_mode_fb_cmd2 *cmd)
+{
+ const struct intel_modifier_desc *md = lookup_modifier_or_null(cmd->modifier[0]);
+
+ if (!md || !md->formats)
+ return NULL;
+
+ return lookup_format_info(md->formats, md->format_count, cmd->pixel_format);
+}
+
static bool is_ccs_type_modifier(const struct intel_modifier_desc *md, u8 ccs_type)
{
return md->ccs.type & ccs_type;
diff --git a/drivers/gpu/drm/i915/display/intel_fb.h b/drivers/gpu/drm/i915/display/intel_fb.h
index 5bff88ccb9372..a87c58a3219cd 100644
--- a/drivers/gpu/drm/i915/display/intel_fb.h
+++ b/drivers/gpu/drm/i915/display/intel_fb.h
@@ -39,6 +39,9 @@ u64 *intel_fb_plane_get_modifiers(struct drm_i915_private *i915,
enum intel_plane_caps plane_caps);
bool intel_fb_plane_supports_modifier(struct intel_plane *plane, u64 modifier);

+const struct drm_format_info *
+intel_fb_get_format_info(const struct drm_mode_fb_cmd2 *cmd);
+
bool is_surface_linear(const struct drm_framebuffer *fb, int color_plane);

int main_to_ccs_plane(const struct drm_framebuffer *fb, int main_plane);
--
2.27.0