On Wed, Oct 21, 2020 at 7:31 PM Bas Nieuwenhuizen
<bas@xxxxxxxxxxxxxxxxxxx> 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.
>
> v2:
> - Added comment that D on Raven is only valid for 64bpp
> and will be filtered based on format later.
> - Removed D tiling modes that weren't useful for 64bpp
> on GFX10+.
>
> Signed-off-by: Bas Nieuwenhuizen <bas@xxxxxxxxxxxxxxxxxxx>
> ---
> .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 338 +++++++++++++++++-
> 1 file changed, 337 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 6b33e030fe20..a1ce325f2fd1 100644
> --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
> @@ -4133,6 +4133,335 @@ 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 = drm_to_adev(plane->dev);
> + 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) {
> + /* Raven2 and later */
> + bool has_constant_encode = adev->asic_type > CHIP_RAVEN || adev->external_rev_id >= 0x81;
> +
> + /*
> + * No _D DCC swizzles yet because we only allow 32bpp, which
> + * doesn't support _D on DCN
> + */
> +
> + if (has_constant_encode) {
> + 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));
> + }
> +
> + 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));
> +
> + if (has_constant_encode) {
> + 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));
> + }
> +
> + /*
> + * Only supported for 64bpp on Raven, will be filtered on format in
> + * dm_plane_format_mod_supported.
> + */
> + 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));
> +
> + 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));
> + }
> +
> + /*
> + * Only supported for 64bpp on Raven, will be filtered on format in
> + * dm_plane_format_mod_supported.
> + */
> + 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_S_X) |
> + AMD_FMT_MOD_SET(TILE_VERSION, AMD_FMT_MOD_TILE_VER_GFX10) |
> + AMD_FMT_MOD_SET(PIPE_XOR_BITS, pipe_xor_bits));
> +
> +
> + /* Only supported for 64bpp, will be filtered in dm_plane_format_mod_supported */
> + 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_S_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));
> +
> + /* Only supported for 64bpp, will be filtered in dm_plane_format_mod_supported */
> + 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 int
> +get_plane_modifiers(const struct amdgpu_device *adev, unsigned int plane_type, uint64_t **mods)
> +{
> + uint64_t size = 0, capacity = 128;
> + *mods = NULL;
> +
> + /* We have not hooked up any pre-GFX9 modifiers. */
> + if (adev->family < AMDGPU_FAMILY_AI)
> + return 0;
> +
> + *mods = kmalloc(capacity * sizeof(uint64_t), GFP_KERNEL);
> +
> + if (plane_type == DRM_PLANE_TYPE_CURSOR) {
> + add_modifier(mods, &size, &capacity, DRM_FORMAT_MOD_LINEAR);
> + add_modifier(mods, &size, &capacity, DRM_FORMAT_MOD_INVALID);
> + return *mods ? 0 : -ENOMEM;
> + }
> +
> + switch (adev->family) {
> + case AMDGPU_FAMILY_AI:
> + case AMDGPU_FAMILY_RV:
> + add_gfx9_modifiers(adev, mods, &size, &capacity);
> + break;
> + case AMDGPU_FAMILY_NV:
Should probably add:
case AMDGPU_FAMILY_VGH:
here as well.
Alex
> + if (adev->asic_type >= CHIP_SIENNA_CICHLID)
> + add_gfx10_3_modifiers(adev, mods, &size, &capacity);
> + else
> + add_gfx10_1_modifiers(adev, mods, &size, &capacity);
> + break;
> + }
> +
> + add_modifier(mods, &size, &capacity, DRM_FORMAT_MOD_LINEAR);
> +
> + /* INVALID marks the end of the list. */
> + add_modifier(mods, &size, &capacity, DRM_FORMAT_MOD_INVALID);
> +
> + if (!*mods)
> + return -ENOMEM;
> +
> + return 0;
> +}
> +
> static int
> fill_gfx9_plane_attributes_from_modifiers(struct amdgpu_device *adev,
> const struct amdgpu_framebuffer *afb,
> @@ -6100,6 +6429,7 @@ static const struct drm_plane_funcs dm_plane_funcs = {
> .reset = dm_drm_plane_reset,
> .atomic_duplicate_state = dm_drm_plane_duplicate_state,
> .atomic_destroy_state = dm_drm_plane_destroy_state,
> + .format_mod_supported = dm_plane_format_mod_supported,
> };
>
> static int dm_plane_helper_prepare_fb(struct drm_plane *plane,
> @@ -6392,13 +6722,19 @@ static int amdgpu_dm_plane_init(struct amdgpu_display_manager *dm,
> int num_formats;
> int res = -EPERM;
> unsigned int supported_rotations;
> + uint64_t *modifiers = NULL;
>
> num_formats = get_plane_formats(plane, plane_cap, formats,
> ARRAY_SIZE(formats));
>
> + res = get_plane_modifiers(dm->adev, plane->type, &modifiers);
> + if (res)
> + return res;
> +
> res = drm_universal_plane_init(adev_to_drm(dm->adev), plane, possible_crtcs,
> &dm_plane_funcs, formats, num_formats,
> - NULL, plane->type, NULL);
> + modifiers, plane->type, NULL);
> + kfree(modifiers);
> if (res)
> return res;
>
> --
> 2.28.0
>
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