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/*
* GP10B L2
*
* Copyright (c) 2014, NVIDIA CORPORATION. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*/
#include <linux/types.h>
#include "gk20a/gk20a.h"
#include "gm20b/ltc_gm20b.h"
#include "hw_ltc_gp10b.h"
#include "gk20a/ltc_common.c"
static int gp10b_determine_L2_size_bytes(struct gk20a *g)
{
u32 tmp;
int ret;
gk20a_dbg_fn("");
tmp = gk20a_readl(g, ltc_ltc0_lts0_tstg_info_1_r());
ret = g->ltc_count *
ltc_ltc0_lts0_tstg_info_1_slice_size_in_kb_v(tmp)*1024 *
ltc_ltc0_lts0_tstg_info_1_slices_per_l2_v(tmp);
gk20a_dbg(gpu_dbg_info, "L2 size: %d\n", ret);
gk20a_dbg_fn("done");
return ret;
}
static int gp10b_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 64KB */
u32 max_comptag_lines = max_size << 4;
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) {
gr->compbit_store.size = 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;
gk20a_allocator_init(&gr->comp_tags, "comptag",
1, /* start */
max_comptag_lines - 1); /* length*/
gr->comptags_per_cacheline = comptags_per_cacheline;
gr->slices_per_ltc = slices_per_ltc;
gr->cacheline_size = cacheline_size;
return 0;
}
void gp10b_init_ltc(struct gpu_ops *gops)
{
gops->ltc.determine_L2_size_bytes = gp10b_determine_L2_size_bytes;
gops->ltc.set_max_ways_evict_last = gk20a_ltc_set_max_ways_evict_last;
gops->ltc.set_zbc_color_entry = gk20a_ltc_set_zbc_color_entry;
gops->ltc.set_zbc_depth_entry = gk20a_ltc_set_zbc_depth_entry;
gops->ltc.init_cbc = gk20a_ltc_init_cbc;
/* GM20b specific ops. */
gops->ltc.init_fs_state = gm20b_ltc_init_fs_state;
gops->ltc.init_comptags = gp10b_ltc_init_comptags;
gops->ltc.cbc_ctrl = gm20b_ltc_cbc_ctrl;
gops->ltc.elpg_flush = gm20b_ltc_g_elpg_flush_locked;
gops->ltc.isr = gm20b_ltc_isr;
gops->ltc.cbc_fix_config = gm20b_ltc_cbc_fix_config;
gops->ltc.flush = gm20b_flush_ltc;
#ifdef CONFIG_DEBUG_FS
gops->ltc.sync_debugfs = gk20a_ltc_sync_debugfs;
#endif
}
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