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 <b...@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:
--
2.28.0
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