[PATCH 8/8] drm/amd/display: Expose modifiers.
Bas Nieuwenhuizen
bas at basnieuwenhuizen.nl
Wed Sep 2 10:31:46 UTC 2020
On Fri, Aug 7, 2020 at 9:43 PM Marek Olšák <maraeo at gmail.com> wrote:
>
> On Tue, Aug 4, 2020 at 5:32 PM Bas Nieuwenhuizen <bas at basnieuwenhuizen.nl> wrote:
>>
>> This expose modifier support on GFX9+.
>>
>> Only modifiers that can be rendered on the current GPU are
>> added. This is to reduce the number of modifiers exposed.
>>
>> The HW could expose more, but the best mechanism to decide
>> what to expose without an explosion in modifiers is still
>> to be decided, and in the meantime this should not regress
>> things from pre-modifiers and does not risk regressions as
>> we make up our mind in the future.
>>
>> Signed-off-by: Bas Nieuwenhuizen <bas at basnieuwenhuizen.nl>
>> ---
>> .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 343 +++++++++++++++++-
>> 1 file changed, 342 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
>> index c38257081868..6594cbe625f9 100644
>> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
>> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
>> @@ -3891,6 +3891,340 @@ fill_gfx9_tiling_info_from_modifier(const struct amdgpu_device *adev,
>> }
>> }
>>
>> +enum dm_micro_swizzle {
>> + MICRO_SWIZZLE_Z = 0,
>> + MICRO_SWIZZLE_S = 1,
>> + MICRO_SWIZZLE_D = 2,
>> + MICRO_SWIZZLE_R = 3
>> +};
>> +
>> +static bool dm_plane_format_mod_supported(struct drm_plane *plane,
>> + uint32_t format,
>> + uint64_t modifier)
>> +{
>> + struct amdgpu_device *adev = plane->dev->dev_private;
>> + const struct drm_format_info *info = drm_format_info(format);
>> +
>> + enum dm_micro_swizzle microtile = modifier_gfx9_swizzle_mode(modifier) & 3;
>> +
>> + if (!info)
>> + return false;
>> +
>> + /*
>> + * We always have to allow this modifier, because core DRM still
>> + * checks LINEAR support if userspace does not provide modifers.
>> + */
>> + if (modifier == DRM_FORMAT_MOD_LINEAR)
>> + return true;
>> +
>> + /*
>> + * The arbitrary tiling support for multiplane formats has not been hooked
>> + * up.
>> + */
>> + if (info->num_planes > 1)
>> + return false;
>> +
>> + /*
>> + * For D swizzle the canonical modifier depends on the bpp, so check
>> + * it here.
>> + */
>> + if (AMD_FMT_MOD_GET(TILE_VERSION, modifier) == AMD_FMT_MOD_TILE_VER_GFX9 &&
>> + adev->family >= AMDGPU_FAMILY_NV) {
>> + if (microtile == MICRO_SWIZZLE_D && info->cpp[0] == 4)
>> + return false;
>> + }
>> +
>> + if (adev->family >= AMDGPU_FAMILY_RV && microtile == MICRO_SWIZZLE_D &&
>> + info->cpp[0] < 8)
>> + return false;
>> +
>> + if (modifier_has_dcc(modifier)) {
>> + /* Per radeonsi comments 16/64 bpp are more complicated. */
>> + if (info->cpp[0] != 4)
>> + return false;
>> + }
>> +
>> + return true;
>> +}
>> +
>> +static void
>> +add_modifier(uint64_t **mods, uint64_t *size, uint64_t *cap, uint64_t mod)
>> +{
>> + if (!*mods)
>> + return;
>> +
>> + if (*cap - *size < 1) {
>> + uint64_t new_cap = *cap * 2;
>> + uint64_t *new_mods = kmalloc(new_cap * sizeof(uint64_t), GFP_KERNEL);
>> +
>> + if (!new_mods) {
>> + kfree(*mods);
>> + *mods = NULL;
>> + return;
>> + }
>> +
>> + memcpy(new_mods, *mods, sizeof(uint64_t) * *size);
>> + kfree(*mods);
>> + *mods = new_mods;
>> + *cap = new_cap;
>> + }
>> +
>> + (*mods)[*size] = mod;
>> + *size += 1;
>> +}
>> +
>> +static void
>> +add_gfx9_modifiers(const struct amdgpu_device *adev,
>> + uint64_t **mods, uint64_t *size, uint64_t *capacity)
>> +{
>> + int pipes = ilog2(adev->gfx.config.gb_addr_config_fields.num_pipes);
>> + int pipe_xor_bits = min(8, pipes +
>> + ilog2(adev->gfx.config.gb_addr_config_fields.num_se));
>> + int bank_xor_bits = min(8 - pipe_xor_bits,
>> + ilog2(adev->gfx.config.gb_addr_config_fields.num_banks));
>> + int rb = ilog2(adev->gfx.config.gb_addr_config_fields.num_se) +
>> + ilog2(adev->gfx.config.gb_addr_config_fields.num_rb_per_se);
>> +
>> +
>> + if (adev->family == AMDGPU_FAMILY_RV) {
>> + /*
>> + * No _D DCC swizzles yet because we only allow 32bpp, which
>> + * doesn't support _D on DCN
>> + */
>> +
>> + /*
>> + * Always enable constant encoding, because the only unit that
>> + * didn't support it was CB. But on texture/display we can
>> + * always interpret it.
>> + */
>> + add_modifier(mods, size, capacity, AMD_FMT_MOD |
>> + AMD_FMT_MOD_SET(TILE, AMD_FMT_MOD_TILE_GFX9_64K_S_X) |
>> + AMD_FMT_MOD_SET(TILE_VERSION, AMD_FMT_MOD_TILE_VER_GFX9) |
>> + AMD_FMT_MOD_SET(PIPE_XOR_BITS, pipe_xor_bits) |
>> + AMD_FMT_MOD_SET(BANK_XOR_BITS, bank_xor_bits) |
>> + AMD_FMT_MOD_SET(DCC, 1) |
>> + AMD_FMT_MOD_SET(DCC_INDEPENDENT_64B, 1) |
>> + AMD_FMT_MOD_SET(DCC_MAX_COMPRESSED_BLOCK, AMD_FMT_MOD_DCC_BLOCK_64B) |
>> + AMD_FMT_MOD_SET(DCC_CONSTANT_ENCODE, 1));
>
>
> I don't think Raven1 can do DCC constant encoding in DCN and GL2.
>
>> +
>> + add_modifier(mods, size, capacity, AMD_FMT_MOD |
>> + AMD_FMT_MOD_SET(TILE, AMD_FMT_MOD_TILE_GFX9_64K_S_X) |
>> + AMD_FMT_MOD_SET(TILE_VERSION, AMD_FMT_MOD_TILE_VER_GFX9) |
>> + AMD_FMT_MOD_SET(PIPE_XOR_BITS, pipe_xor_bits) |
>> + AMD_FMT_MOD_SET(BANK_XOR_BITS, bank_xor_bits) |
>> + AMD_FMT_MOD_SET(DCC, 1) |
>> + AMD_FMT_MOD_SET(DCC_INDEPENDENT_64B, 1) |
>> + AMD_FMT_MOD_SET(DCC_MAX_COMPRESSED_BLOCK, AMD_FMT_MOD_DCC_BLOCK_64B) |
>> + AMD_FMT_MOD_SET(DCC_CONSTANT_ENCODE, 0));
>> +
>> + add_modifier(mods, size, capacity, AMD_FMT_MOD |
>> + AMD_FMT_MOD_SET(TILE, AMD_FMT_MOD_TILE_GFX9_64K_S_X) |
>> + AMD_FMT_MOD_SET(TILE_VERSION, AMD_FMT_MOD_TILE_VER_GFX9) |
>> + AMD_FMT_MOD_SET(PIPE_XOR_BITS, pipe_xor_bits) |
>> + AMD_FMT_MOD_SET(BANK_XOR_BITS, bank_xor_bits) |
>> + AMD_FMT_MOD_SET(DCC, 1) |
>> + AMD_FMT_MOD_SET(DCC_RETILE, 1) |
>> + AMD_FMT_MOD_SET(DCC_INDEPENDENT_64B, 1) |
>> + AMD_FMT_MOD_SET(DCC_MAX_COMPRESSED_BLOCK, AMD_FMT_MOD_DCC_BLOCK_64B) |
>> + AMD_FMT_MOD_SET(DCC_CONSTANT_ENCODE, 1) |
>> + AMD_FMT_MOD_SET(RB, rb) |
>> + AMD_FMT_MOD_SET(PIPE, pipes));
>> +
>> + add_modifier(mods, size, capacity, AMD_FMT_MOD |
>> + AMD_FMT_MOD_SET(TILE, AMD_FMT_MOD_TILE_GFX9_64K_S_X) |
>> + AMD_FMT_MOD_SET(TILE_VERSION, AMD_FMT_MOD_TILE_VER_GFX9) |
>> + AMD_FMT_MOD_SET(PIPE_XOR_BITS, pipe_xor_bits) |
>> + AMD_FMT_MOD_SET(BANK_XOR_BITS, bank_xor_bits) |
>> + AMD_FMT_MOD_SET(DCC, 1) |
>> + AMD_FMT_MOD_SET(DCC_RETILE, 1) |
>> + AMD_FMT_MOD_SET(DCC_INDEPENDENT_64B, 1) |
>> + AMD_FMT_MOD_SET(DCC_MAX_COMPRESSED_BLOCK, AMD_FMT_MOD_DCC_BLOCK_64B) |
>> + AMD_FMT_MOD_SET(DCC_CONSTANT_ENCODE, 0) |
>> + AMD_FMT_MOD_SET(RB, rb) |
>> + AMD_FMT_MOD_SET(PIPE, pipes));
>> + }
>> +
>> + add_modifier(mods, size, capacity, AMD_FMT_MOD |
>> + AMD_FMT_MOD_SET(TILE, AMD_FMT_MOD_TILE_GFX9_64K_D_X) |
>> + AMD_FMT_MOD_SET(TILE_VERSION, AMD_FMT_MOD_TILE_VER_GFX9) |
>> + AMD_FMT_MOD_SET(PIPE_XOR_BITS, pipe_xor_bits) |
>> + AMD_FMT_MOD_SET(BANK_XOR_BITS, bank_xor_bits));
>
>
> Addrlib says that D swizzle modes are unsupported for 32bpp in DCN1. They are only supported in DCE12. The swizzle modes between the two have no intersection.
Right, but we don't have the format here. These get further filtered
by dm_plane_format_mod_supported, which does:
if (adev->family >= AMDGPU_FAMILY_RV && microtile == MICRO_SWIZZLE_D &&
info->cpp[0] < 8)
return false;
(cpp is in bytes)
>
>>
>> +
>> + if (adev->family == AMDGPU_FAMILY_RV) {
>> + add_modifier(mods, size, capacity, AMD_FMT_MOD |
>> + AMD_FMT_MOD_SET(TILE, AMD_FMT_MOD_TILE_GFX9_64K_S_X) |
>> + AMD_FMT_MOD_SET(TILE_VERSION, AMD_FMT_MOD_TILE_VER_GFX9) |
>> + AMD_FMT_MOD_SET(PIPE_XOR_BITS, pipe_xor_bits) |
>> + AMD_FMT_MOD_SET(BANK_XOR_BITS, bank_xor_bits));
>> + }
>> +
>> + add_modifier(mods, size, capacity, AMD_FMT_MOD |
>> + AMD_FMT_MOD_SET(TILE, AMD_FMT_MOD_TILE_GFX9_64K_D) |
>> + AMD_FMT_MOD_SET(TILE_VERSION, AMD_FMT_MOD_TILE_VER_GFX9));
>> +
>> + if (adev->family == AMDGPU_FAMILY_RV) {
>> + add_modifier(mods, size, capacity, AMD_FMT_MOD |
>> + AMD_FMT_MOD_SET(TILE, AMD_FMT_MOD_TILE_GFX9_64K_S) |
>> + AMD_FMT_MOD_SET(TILE_VERSION, AMD_FMT_MOD_TILE_VER_GFX9));
>> + }
>> +}
>> +
>> +static void
>> +add_gfx10_1_modifiers(const struct amdgpu_device *adev,
>> + uint64_t **mods, uint64_t *size, uint64_t *capacity)
>> +{
>> + int pipe_xor_bits = ilog2(adev->gfx.config.gb_addr_config_fields.num_pipes);
>> +
>> + add_modifier(mods, size, capacity, AMD_FMT_MOD |
>> + AMD_FMT_MOD_SET(TILE, AMD_FMT_MOD_TILE_GFX9_64K_R_X) |
>> + AMD_FMT_MOD_SET(TILE_VERSION, AMD_FMT_MOD_TILE_VER_GFX10) |
>> + AMD_FMT_MOD_SET(PIPE_XOR_BITS, pipe_xor_bits) |
>> + AMD_FMT_MOD_SET(DCC, 1) |
>> + AMD_FMT_MOD_SET(DCC_CONSTANT_ENCODE, 1) |
>> + AMD_FMT_MOD_SET(DCC_INDEPENDENT_64B, 1) |
>> + AMD_FMT_MOD_SET(DCC_MAX_COMPRESSED_BLOCK, AMD_FMT_MOD_DCC_BLOCK_64B));
>> +
>> + add_modifier(mods, size, capacity, AMD_FMT_MOD |
>> + AMD_FMT_MOD_SET(TILE, AMD_FMT_MOD_TILE_GFX9_64K_R_X) |
>> + AMD_FMT_MOD_SET(TILE_VERSION, AMD_FMT_MOD_TILE_VER_GFX10) |
>> + AMD_FMT_MOD_SET(PIPE_XOR_BITS, pipe_xor_bits) |
>> + AMD_FMT_MOD_SET(DCC, 1) |
>> + AMD_FMT_MOD_SET(DCC_RETILE, 1) |
>> + AMD_FMT_MOD_SET(DCC_CONSTANT_ENCODE, 1) |
>> + AMD_FMT_MOD_SET(DCC_INDEPENDENT_64B, 1) |
>> + AMD_FMT_MOD_SET(DCC_MAX_COMPRESSED_BLOCK, AMD_FMT_MOD_DCC_BLOCK_64B));
>> +
>> + add_modifier(mods, size, capacity, AMD_FMT_MOD |
>> + AMD_FMT_MOD_SET(TILE, AMD_FMT_MOD_TILE_GFX9_64K_R_X) |
>> + AMD_FMT_MOD_SET(TILE_VERSION, AMD_FMT_MOD_TILE_VER_GFX10) |
>> + AMD_FMT_MOD_SET(PIPE_XOR_BITS, pipe_xor_bits));
>> +
>> + add_modifier(mods, size, capacity, AMD_FMT_MOD |
>> + AMD_FMT_MOD_SET(TILE, AMD_FMT_MOD_TILE_GFX9_64K_D_X) |
>> + AMD_FMT_MOD_SET(TILE_VERSION, AMD_FMT_MOD_TILE_VER_GFX10) |
>> + AMD_FMT_MOD_SET(PIPE_XOR_BITS, pipe_xor_bits));
>
>
> D swizzle modes are unsupported according to Addrlib.
Seems to be supported for DCN2:
https://gitlab.freedesktop.org/mesa/mesa/-/blob/master/src/amd/addrlib/src/gfx10/gfx10addrlib.cpp#L1942
which seems to be both gfx10.1 and gfx10.3 GPUs:
https://gitlab.freedesktop.org/mesa/mesa/-/blob/master/src/amd/addrlib/src/gfx10/gfx10addrlib.cpp#L923
>
>>
>> +
>> + add_modifier(mods, size, capacity, AMD_FMT_MOD |
>> + AMD_FMT_MOD_SET(TILE, AMD_FMT_MOD_TILE_GFX9_64K_S_X) |
>> + AMD_FMT_MOD_SET(TILE_VERSION, AMD_FMT_MOD_TILE_VER_GFX10) |
>> + AMD_FMT_MOD_SET(PIPE_XOR_BITS, pipe_xor_bits));
>> +
>> + add_modifier(mods, size, capacity, AMD_FMT_MOD |
>> + AMD_FMT_MOD_SET(TILE, AMD_FMT_MOD_TILE_GFX9_64K_D) |
>> + AMD_FMT_MOD_SET(TILE_VERSION, AMD_FMT_MOD_TILE_VER_GFX10));
>> +
>> + add_modifier(mods, size, capacity, AMD_FMT_MOD |
>> + AMD_FMT_MOD_SET(TILE, AMD_FMT_MOD_TILE_GFX9_64K_D) |
>> + AMD_FMT_MOD_SET(TILE_VERSION, AMD_FMT_MOD_TILE_VER_GFX9));
>> +
>> + add_modifier(mods, size, capacity, AMD_FMT_MOD |
>> + AMD_FMT_MOD_SET(TILE, AMD_FMT_MOD_TILE_GFX9_64K_S) |
>> + AMD_FMT_MOD_SET(TILE_VERSION, AMD_FMT_MOD_TILE_VER_GFX9));
>> +}
>> +
>> +static void
>> +add_gfx10_3_modifiers(const struct amdgpu_device *adev,
>> + uint64_t **mods, uint64_t *size, uint64_t *capacity)
>> +{
>> + int pipe_xor_bits = ilog2(adev->gfx.config.gb_addr_config_fields.num_pipes);
>> + int pkrs = ilog2(adev->gfx.config.gb_addr_config_fields.num_pkrs);
>> +
>> + add_modifier(mods, size, capacity, AMD_FMT_MOD |
>> + AMD_FMT_MOD_SET(TILE, AMD_FMT_MOD_TILE_GFX9_64K_R_X) |
>> + AMD_FMT_MOD_SET(TILE_VERSION, AMD_FMT_MOD_TILE_VER_GFX10_RBPLUS) |
>> + AMD_FMT_MOD_SET(PIPE_XOR_BITS, pipe_xor_bits) |
>> + AMD_FMT_MOD_SET(PACKERS, pkrs) |
>> + AMD_FMT_MOD_SET(DCC, 1) |
>> + AMD_FMT_MOD_SET(DCC_CONSTANT_ENCODE, 1) |
>> + AMD_FMT_MOD_SET(DCC_INDEPENDENT_64B, 1) |
>> + AMD_FMT_MOD_SET(DCC_INDEPENDENT_128B, 1) |
>> + AMD_FMT_MOD_SET(DCC_MAX_COMPRESSED_BLOCK, AMD_FMT_MOD_DCC_BLOCK_128B));
>> +
>> + add_modifier(mods, size, capacity, AMD_FMT_MOD |
>> + AMD_FMT_MOD_SET(TILE, AMD_FMT_MOD_TILE_GFX9_64K_R_X) |
>> + AMD_FMT_MOD_SET(TILE_VERSION, AMD_FMT_MOD_TILE_VER_GFX10_RBPLUS) |
>> + AMD_FMT_MOD_SET(PIPE_XOR_BITS, pipe_xor_bits) |
>> + AMD_FMT_MOD_SET(PACKERS, pkrs) |
>> + AMD_FMT_MOD_SET(DCC, 1) |
>> + AMD_FMT_MOD_SET(DCC_RETILE, 1) |
>> + AMD_FMT_MOD_SET(DCC_CONSTANT_ENCODE, 1) |
>> + AMD_FMT_MOD_SET(DCC_INDEPENDENT_64B, 1) |
>> + AMD_FMT_MOD_SET(DCC_INDEPENDENT_128B, 1) |
>> + AMD_FMT_MOD_SET(DCC_MAX_COMPRESSED_BLOCK, AMD_FMT_MOD_DCC_BLOCK_128B));
>> +
>> + add_modifier(mods, size, capacity, AMD_FMT_MOD |
>> + AMD_FMT_MOD_SET(TILE, AMD_FMT_MOD_TILE_GFX9_64K_R_X) |
>> + AMD_FMT_MOD_SET(TILE_VERSION, AMD_FMT_MOD_TILE_VER_GFX10_RBPLUS) |
>> + AMD_FMT_MOD_SET(PIPE_XOR_BITS, pipe_xor_bits) |
>> + AMD_FMT_MOD_SET(PACKERS, pkrs));
>> +
>> + add_modifier(mods, size, capacity, AMD_FMT_MOD |
>> + AMD_FMT_MOD_SET(TILE, AMD_FMT_MOD_TILE_GFX9_64K_D_X) |
>> + AMD_FMT_MOD_SET(TILE_VERSION, AMD_FMT_MOD_TILE_VER_GFX10_RBPLUS) |
>> + AMD_FMT_MOD_SET(PIPE_XOR_BITS, pipe_xor_bits) |
>> + AMD_FMT_MOD_SET(PACKERS, pkrs));
>
>
> D swizzle modes are unsupported.
Same as above.
>
> Marek
>
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