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amd: query the per-SIMD VGPR counts from the kernel, don't hardcode them

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Reviewed-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21525>
This commit is contained in:
Marek Olšák 2023-01-24 20:31:19 -05:00 • committed by Marge Bot
parent 26208698ae
commit 80c0efa50f
1 changed files with 13 additions and 4 deletions
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17
src/amd/common/ac_gpu_info.c
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@ -1331,12 +1331,21 @@ bool ac_query_gpu_info(int fd, void *dev_p, struct radeon_info *info)
info->wave64_vgpr_alloc_granularity = 4;
}
if (info->family == CHIP_GFX1100 || info->family == CHIP_GFX1101)
info->num_physical_wave64_vgprs_per_simd = 768;
else if (info->gfx_level >= GFX10)
/* Some GPU info was broken before DRM 3.45.0. */
if (info->drm_minor >= 45 && device_info.num_shader_visible_vgprs) {
/* The Gfx10 VGPR count is in Wave32, so divide it by 2 for Wave64.
* Gfx6-9 numbers are in Wave64.
*/
if (info->gfx_level >= GFX10)
info->num_physical_wave64_vgprs_per_simd = device_info.num_shader_visible_vgprs / 2;
else
info->num_physical_wave64_vgprs_per_simd = device_info.num_shader_visible_vgprs;
} else if (info->gfx_level >= GFX10) {
info->num_physical_wave64_vgprs_per_simd = 512;
else
} else {
info->num_physical_wave64_vgprs_per_simd = 256;
}
info->num_simd_per_compute_unit = info->gfx_level >= GFX10 ? 2 : 4;
/* BIG_PAGE is supported since gfx10.3 and requires VRAM. VRAM is only guaranteed