static int gm20b_ltc_init_comptags(struct gk20a *g, struct gr_gk20a *gr) { /* max memory size (MB) to cover */ u32 max_size = gr->max_comptag_mem; /* one tag line covers 128KB */ u32 max_comptag_lines = max_size << 3; u32 hw_max_comptag_lines = ltc_ltcs_ltss_cbc_ctrl3_clear_upper_bound_init_v(); u32 cbc_param = gk20a_readl(g, ltc_ltcs_ltss_cbc_param_r()); u32 comptags_per_cacheline = ltc_ltcs_ltss_cbc_param_comptags_per_cache_line_v(cbc_param); u32 cacheline_size = 512 << ltc_ltcs_ltss_cbc_param_cache_line_size_v(cbc_param); u32 slices_per_ltc = ltc_ltcs_ltss_cbc_param_slices_per_ltc_v(cbc_param); u32 compbit_backing_size; int err; gk20a_dbg_fn(""); if (max_comptag_lines == 0) return 0; if (max_comptag_lines > hw_max_comptag_lines) max_comptag_lines = hw_max_comptag_lines; compbit_backing_size = DIV_ROUND_UP(max_comptag_lines, comptags_per_cacheline) * cacheline_size * slices_per_ltc * g->ltc_count; /* aligned to 2KB * ltc_count */ compbit_backing_size += g->ltc_count << ltc_ltcs_ltss_cbc_base_alignment_shift_v(); /* must be a multiple of 64KB */ compbit_backing_size = roundup(compbit_backing_size, 64*1024); max_comptag_lines = (compbit_backing_size * comptags_per_cacheline) / (cacheline_size * slices_per_ltc * g->ltc_count); if (max_comptag_lines > hw_max_comptag_lines) max_comptag_lines = hw_max_comptag_lines; gk20a_dbg_info("compbit backing store size : %d", compbit_backing_size); gk20a_dbg_info("max comptag lines : %d", max_comptag_lines); if (tegra_platform_is_linsim()) err = gk20a_ltc_alloc_phys_cbc(g, compbit_backing_size); else err = gk20a_ltc_alloc_virt_cbc(g, compbit_backing_size); if (err) return err; err = gk20a_comptag_allocator_init(&gr->comp_tags, max_comptag_lines); if (err) return err; gr->comptags_per_cacheline = comptags_per_cacheline; gr->slices_per_ltc = slices_per_ltc; gr->cacheline_size = cacheline_size; return 0; }
static int gk20a_ltc_init_comptags(struct gk20a *g, struct gr_gk20a *gr) { /* max memory size (MB) to cover */ u32 max_size = gr->max_comptag_mem; /* one tag line covers 128KB */ u32 max_comptag_lines = max_size << 3; u32 hw_max_comptag_lines = ltc_ltcs_ltss_cbc_ctrl3_clear_upper_bound_init_v(); u32 cbc_param = gk20a_readl(g, ltc_ltcs_ltss_cbc_param_r()); u32 comptags_per_cacheline = ltc_ltcs_ltss_cbc_param_comptags_per_cache_line_v(cbc_param); u32 slices_per_fbp = ltc_ltcs_ltss_cbc_param_slices_per_fbp_v(cbc_param); u32 cacheline_size = 512 << ltc_ltcs_ltss_cbc_param_cache_line_size_v(cbc_param); u32 compbit_backing_size; int err; gk20a_dbg_fn(""); if (max_comptag_lines == 0) { gr->compbit_store.size = 0; return 0; } if (max_comptag_lines > hw_max_comptag_lines) max_comptag_lines = hw_max_comptag_lines; /* no hybird fb */ compbit_backing_size = DIV_ROUND_UP(max_comptag_lines, comptags_per_cacheline) * cacheline_size * slices_per_fbp * gr->num_fbps; /* aligned to 2KB * num_fbps */ compbit_backing_size += gr->num_fbps << ltc_ltcs_ltss_cbc_base_alignment_shift_v(); /* must be a multiple of 64KB */ compbit_backing_size = roundup(compbit_backing_size, 64*1024); max_comptag_lines = (compbit_backing_size * comptags_per_cacheline) / cacheline_size * slices_per_fbp * gr->num_fbps; if (max_comptag_lines > hw_max_comptag_lines) max_comptag_lines = hw_max_comptag_lines; gk20a_dbg_info("compbit backing store size : %d", compbit_backing_size); gk20a_dbg_info("max comptag lines : %d", max_comptag_lines); if (IS_ENABLED(CONFIG_GK20A_PHYS_PAGE_TABLES)) err = gk20a_ltc_alloc_phys_cbc(g, compbit_backing_size); else err = gk20a_ltc_alloc_virt_cbc(g, compbit_backing_size); if (err) return err; gk20a_allocator_init(&gr->comp_tags, "comptag", 1, /* start */ max_comptag_lines - 1, /* length*/ 1); /* align */ gr->comptags_per_cacheline = comptags_per_cacheline; gr->slices_per_fbp = slices_per_fbp; gr->cacheline_size = cacheline_size; return 0; }