radeonsi/gfx11: enable shader prefetch except for initial chip revisions

Reviewed-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Part-of: <!17864>

src/amd/common/ac_gpu_info.c

@@ -873,6 +873,7 @@ bool ac_query_gpu_info(int fd, void *dev_p, struct radeon_info *info)
 
    info->family_id = device_info.family;
    info->chip_external_rev = device_info.external_rev;
+   info->chip_rev = device_info.chip_rev;
    info->marketing_name = amdgpu_get_marketing_name(dev);
    info->is_pro_graphics = info->marketing_name && (strstr(info->marketing_name, "Pro") ||
                                                     strstr(info->marketing_name, "PRO") ||
@@ -1451,6 +1452,7 @@ void ac_print_gpu_info(struct radeon_info *info, FILE *f)
    fprintf(f, "    gfx_level = %i\n", info->gfx_level);
    fprintf(f, "    family_id = %i\n", info->family_id);
    fprintf(f, "    chip_external_rev = %i\n", info->chip_external_rev);
+   fprintf(f, "    chip_rev = %i\n", info->chip_rev);
 
    fprintf(f, "Flags:\n");
    fprintf(f, "    is_pro_graphics = %u\n", info->is_pro_graphics);

src/amd/common/ac_gpu_info.h

@@ -82,6 +82,7 @@ struct radeon_info {
    enum amd_gfx_level gfx_level;
    uint32_t family_id;
    uint32_t chip_external_rev;
+   uint32_t chip_rev; /* 0 = A0, 1 = A1, etc. */
 
    /* Flags. */
    bool is_pro_graphics;

src/gallium/drivers/radeonsi/si_state_shaders.cpp

@@ -668,8 +668,11 @@ static unsigned si_get_vs_vgpr_comp_cnt(struct si_screen *sscreen, struct si_sha
 
 unsigned si_get_shader_prefetch_size(struct si_shader *shader)
 {
-   /* TODO: Disable for now. */
-   if (shader->selector->screen->info.gfx_level == GFX11)
+   /* Return 0 for some A0 chips only. Other chips don't need it. */
+   if ((shader->selector->screen->info.family == CHIP_GFX1100 ||
+        shader->selector->screen->info.family == CHIP_GFX1102 ||
+        shader->selector->screen->info.family == CHIP_GFX1103) &&
+       shader->selector->screen->info.chip_rev == 0)
       return 0;
 
    /* inst_pref_size is calculated in cache line size granularity */