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intel/dev: Add a max_cs_workgroup_threads field

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This is distinct form max_cs_threads because it also encodes
restrictions about the way we use GPGPU/COMPUTE_WALKER.  This gets rid
of the MIN2(64, devinfo->max_cs_threads) we have scattered all over the
driver and puts it in a central place.

Reviewed-by: Caio Marcelo de Oliveira Filho <caio.oliveira@intel.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/11861>
This commit is contained in:
Jason Ekstrand
2021-07-13 18:21:43 -05:00
committed by Marge Bot
parent 915e5a8cc3
commit 6642749458
7 changed files with 37 additions and 19 deletions
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5
src/intel/compiler/brw_fs.cpp
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@@ -10099,7 +10099,7 @@ brw_compile_cs(const struct brw_compiler *compiler,
prog_data->local_size[2];
/* Limit max_threads to 64 for the GPGPU_WALKER command */
const uint32_t max_threads = MIN2(64, compiler->devinfo->max_cs_threads);
const uint32_t max_threads = compiler->devinfo->max_cs_workgroup_threads;
min_dispatch_width = util_next_power_of_two(
MAX2(8, DIV_ROUND_UP(local_workgroup_size, max_threads)));
assert(min_dispatch_width <= 32);
@@ -10316,8 +10316,7 @@ brw_cs_simd_size_for_group_size(const struct intel_device_info *devinfo,
if ((INTEL_DEBUG & DEBUG_DO32) && (mask & simd32))
return 32;
/* Limit max_threads to 64 for the GPGPU_WALKER command */
const uint32_t max_threads = MIN2(64, devinfo->max_cs_threads);
const uint32_t max_threads = devinfo->max_cs_workgroup_threads;
if ((mask & simd8) && group_size <= 8 * max_threads) {
/* Prefer SIMD16 if can do without spilling. Matches logic in