This way the modifier path gets exercised all the time, improving testing. Furthermore, for modifiers this is required as getfb2 will always return the modifier if the driver sets allow_fb_modifiers.
This only triggers once allow_fb_modifiers is set.
Signed-off-by: Bas Nieuwenhuizen bas@basnieuwenhuizen.nl --- drivers/gpu/drm/amd/amdgpu/amdgpu_display.c | 123 ++++++++++++++++++++ 1 file changed, 123 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c index 638ce7528d30..af45cc6d8ec1 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_display.c @@ -38,6 +38,7 @@ #include <drm/drm_edid.h> #include <drm/drm_gem_framebuffer_helper.h> #include <drm/drm_fb_helper.h> +#include <drm/drm_fourcc.h> #include <drm/drm_vblank.h>
static void amdgpu_display_flip_callback(struct dma_fence *f, @@ -537,6 +538,121 @@ uint32_t amdgpu_display_supported_domains(struct amdgpu_device *adev, return domain; }
+static int convert_tiling_flags_to_modifier(struct amdgpu_framebuffer *afb) +{ + struct amdgpu_device *adev = drm_to_adev(afb->base.dev); + uint64_t modifier = 0; + + if (!afb->tiling_flags || !AMDGPU_TILING_GET(afb->tiling_flags, SWIZZLE_MODE)) { + modifier = DRM_FORMAT_MOD_LINEAR; + } else { + int swizzle = AMDGPU_TILING_GET(afb->tiling_flags, SWIZZLE_MODE); + bool has_xor = swizzle >= 16; + int block_size_bits; + int version; + int pipe_xor_bits = 0; + int bank_xor_bits = 0; + int packers = 0; + uint32_t dcc_offset = AMDGPU_TILING_GET(afb->tiling_flags, DCC_OFFSET_256B); + + switch (swizzle >> 2) { + case 0: /* 256B */ + block_size_bits = 8; + break; + case 1: /* 4KiB */ + case 5: /* 4KiB _X */ + block_size_bits = 12; + break; + case 2: /* 64KiB */ + case 4: /* 64 KiB _T */ + case 6: /* 64 KiB _X */ + block_size_bits = 16; + break; + default: + /* RESERVED or VAR */ + return -EINVAL; + } + + if (adev->asic_type >= CHIP_SIENNA_CICHLID) + version = AMD_FMT_MOD_TILE_VER_GFX10_RBPLUS; + else if (adev->family == AMDGPU_FAMILY_NV) + version = AMD_FMT_MOD_TILE_VER_GFX10; + else + version = AMD_FMT_MOD_TILE_VER_GFX9; + + switch (swizzle & 3) { + case 0: /* Z microtiling */ + return -EINVAL; + case 1: /* S microtiling */ + if (!has_xor) + version = AMD_FMT_MOD_TILE_VER_GFX9; + break; + case 2: + if (!has_xor && afb->base.format->cpp[0] != 4) + version = AMD_FMT_MOD_TILE_VER_GFX9; + break; + case 3: + break; + } + + if (has_xor) { + switch (version) { + case AMD_FMT_MOD_TILE_VER_GFX10_RBPLUS: + pipe_xor_bits = min(block_size_bits - 8, + ilog2(adev->gfx.config.gb_addr_config_fields.num_pipes)); + packers = min(block_size_bits - 8 - pipe_xor_bits, + ilog2(adev->gfx.config.gb_addr_config_fields.num_pkrs)); + break; + case AMD_FMT_MOD_TILE_VER_GFX10: + pipe_xor_bits = min(block_size_bits - 8, + ilog2(adev->gfx.config.gb_addr_config_fields.num_pipes)); + break; + case AMD_FMT_MOD_TILE_VER_GFX9: + pipe_xor_bits = min(block_size_bits - 8, + ilog2(adev->gfx.config.gb_addr_config_fields.num_pipes) + + ilog2(adev->gfx.config.gb_addr_config_fields.num_se)); + bank_xor_bits = min(block_size_bits - 8 - pipe_xor_bits, + ilog2(adev->gfx.config.gb_addr_config_fields.num_banks)); + break; + } + } + + modifier = AMD_FMT_MOD | + AMD_FMT_MOD_SET(TILE, AMDGPU_TILING_GET(afb->tiling_flags, SWIZZLE_MODE)) | + AMD_FMT_MOD_SET(TILE_VERSION, version) | + AMD_FMT_MOD_SET(PIPE_XOR_BITS, pipe_xor_bits) | + AMD_FMT_MOD_SET(BANK_XOR_BITS, bank_xor_bits) | + AMD_FMT_MOD_SET(PACKERS, packers); + + if (dcc_offset != 0) { + bool dcc_i64b = AMDGPU_TILING_GET(afb->tiling_flags, DCC_INDEPENDENT_64B) != 0; + bool dcc_i128b = version >= AMD_FMT_MOD_TILE_VER_GFX10_RBPLUS; + + /* Enable constant encode on RAVEN2 and later. */ + bool dcc_constant_encode = adev->asic_type > CHIP_RAVEN || + (adev->asic_type == CHIP_RAVEN && + adev->external_rev_id >= 0x81); + + int max_cblock_size = dcc_i64b ? AMD_FMT_MOD_DCC_BLOCK_64B : + dcc_i128b ? AMD_FMT_MOD_DCC_BLOCK_128B : + AMD_FMT_MOD_DCC_BLOCK_256B; + + modifier |= AMD_FMT_MOD_SET(DCC, 1) | + AMD_FMT_MOD_SET(DCC_CONSTANT_ENCODE, dcc_constant_encode) | + AMD_FMT_MOD_SET(DCC_INDEPENDENT_64B, dcc_i64b) | + AMD_FMT_MOD_SET(DCC_INDEPENDENT_128B, dcc_i128b) | + AMD_FMT_MOD_SET(DCC_MAX_COMPRESSED_BLOCK, max_cblock_size); + + afb->base.offsets[1] = dcc_offset * 256 + afb->base.offsets[0]; + afb->base.pitches[1] = AMDGPU_TILING_GET(afb->tiling_flags, DCC_PITCH_MAX) + 1; + } + } + + afb->base.modifier = modifier; + afb->base.flags |= DRM_MODE_FB_MODIFIERS; + return 0; +} + static int amdgpu_display_get_fb_info(const struct amdgpu_framebuffer *amdgpu_fb, uint64_t *tiling_flags, bool *tmz_surface) { @@ -586,6 +702,13 @@ int amdgpu_display_framebuffer_init(struct drm_device *dev, if (ret) goto fail;
+ if (dev->mode_config.allow_fb_modifiers && + !(rfb->base.flags & DRM_MODE_FB_MODIFIERS)) { + ret = convert_tiling_flags_to_modifier(rfb); + if (ret) + goto fail; + } + return 0;
fail: