diff options
| author | Nanley Chery <nanley.g.chery@intel.com> | 2022-11-30 14:47:47 -0800 |
|---|---|---|
| committer | Marge Bot <emma+marge@anholt.net> | 2022-12-06 00:49:17 +0000 |
| commit | 822687f4c06fd178a64295d45780bdc962b2939c (patch) | |
| tree | f61b26894e514699d632b69fd75197472d7e5e96 /src/intel | |
| parent | d307655e528389d0918546b452c2961a85a9d9ad (diff) | |
intel/dev: Add a has_illegal_ccs_values flag
Whether or not CCS can be used without initialization depends on the
platform:
- On gfx7-8, each CCS element is 1-bit and encodes "fast-cleared" or
"pass-through". So, those platforms have no illegal values.
- On gfx9-11, each CCS element is 2-bits and some bit combinations
are invalid.
- On gfx12+, each CCS element is 4-bits but they have no truly illegal
values. Unused encodings are interpreted as "pass-through".
Refer to the "MCS/CCS Buffers for Render Target(s)" sections of the
PRMs for more info.
Reviewed-by: Ivan Briano <ivan.briano@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/20118>
Diffstat (limited to 'src/intel')
| -rw-r--r-- | src/intel/dev/intel_device_info.c | 6 | ||||
| -rw-r--r-- | src/intel/dev/intel_device_info.h | 5 |
2 files changed, 10 insertions, 1 deletions
diff --git a/src/intel/dev/intel_device_info.c b/src/intel/dev/intel_device_info.c index 5d32853be91..2dc93006bbd 100644 --- a/src/intel/dev/intel_device_info.c +++ b/src/intel/dev/intel_device_info.c @@ -563,6 +563,7 @@ static const struct intel_device_info intel_device_info_chv = { .gt = 1, \ .has_llc = false, \ .has_sample_with_hiz = true, \ + .has_illegal_ccs_values = true, \ .num_slices = 1, \ .num_thread_per_eu = 6, \ .max_vs_threads = 112, \ @@ -614,7 +615,8 @@ static const struct intel_device_info intel_device_info_chv = { #define GFX9_FEATURES \ GFX8_FEATURES, \ GFX9_HW_INFO, \ - .has_sample_with_hiz = true + .has_sample_with_hiz = true, \ + .has_illegal_ccs_values = true static const struct intel_device_info intel_device_info_skl_gt1 = { GFX9_FEATURES, .gt = 1, @@ -837,6 +839,7 @@ static const struct intel_device_info intel_device_info_cfl_gt3 = { .has_64bit_int = false, \ .has_integer_dword_mul = false, \ .has_sample_with_hiz = false, \ + .has_illegal_ccs_values = true, \ .gt = _gt, .num_slices = _slices, .l3_banks = _l3, \ .num_subslices = _subslices, \ .max_eus_per_subslice = 8 @@ -890,6 +893,7 @@ static const struct intel_device_info intel_device_info_icl_gt0_5 = { GFX11_URB_MIN_MAX_ENTRIES, \ }, \ .disable_ccs_repack = true, \ + .has_illegal_ccs_values = true, \ .simulator_id = 28 static const struct intel_device_info intel_device_info_ehl_4x8 = { diff --git a/src/intel/dev/intel_device_info.h b/src/intel/dev/intel_device_info.h index 48ac149ab2c..ded43553cc7 100644 --- a/src/intel/dev/intel_device_info.h +++ b/src/intel/dev/intel_device_info.h @@ -135,6 +135,11 @@ struct intel_device_info bool disable_ccs_repack; /** + * True if CCS needs to be initialized before use. + */ + bool has_illegal_ccs_values; + + /** * True if CCS uses a flat virtual address translation to a memory * carve-out, rather than aux map translations, or additional surfaces. */ |