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/*
* GP10B L2
*
* Copyright (c) 2014-2017, 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 <dt-bindings/memory/tegra-swgroup.h>
#include "gk20a/gk20a.h"
#include "gm20b/ltc_gm20b.h"
#include <nvgpu/log.h>
#include <nvgpu/enabled.h>
#include <nvgpu/hw/gp10b/hw_mc_gp10b.h>
#include <nvgpu/hw/gp10b/hw_ltc_gp10b.h>
#include "gk20a/ltc_gk20a.h"
#include "ltc_gp10b.h"
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;
}
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 cbc_param2 =
gk20a_readl(g, ltc_ltcs_ltss_cbc_param2_r());
u32 gobs_per_comptagline_per_slice =
ltc_ltcs_ltss_cbc_param2_gobs_per_comptagline_per_slice_v(cbc_param2);
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 =
roundup(max_comptag_lines * gobs_per_comptagline_per_slice,
cacheline_size);
compbit_backing_size =
roundup(compbit_backing_size * slices_per_ltc * g->ltc_count,
g->ops.fb.compressible_page_size(g));
/* 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);
gk20a_dbg_info("compbit backing store size : %d",
compbit_backing_size);
gk20a_dbg_info("max comptag lines : %d",
max_comptag_lines);
gk20a_dbg_info("gobs_per_comptagline_per_slice: %d",
gobs_per_comptagline_per_slice);
if (nvgpu_is_enabled(g, NVGPU_IS_FMODEL))
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;
gr->gobs_per_comptagline_per_slice = gobs_per_comptagline_per_slice;
return 0;
}
void gp10b_ltc_isr(struct gk20a *g)
{
u32 mc_intr, ltc_intr;
unsigned int ltc, slice;
u32 ltc_stride = nvgpu_get_litter_value(g, GPU_LIT_LTC_STRIDE);
u32 lts_stride = nvgpu_get_litter_value(g, GPU_LIT_LTS_STRIDE);
mc_intr = gk20a_readl(g, mc_intr_ltc_r());
nvgpu_err(g, "mc_ltc_intr: %08x", mc_intr);
for (ltc = 0; ltc < g->ltc_count; ltc++) {
if ((mc_intr & 1 << ltc) == 0)
continue;
for (slice = 0; slice < g->gr.slices_per_ltc; slice++) {
u32 offset = ltc_stride * ltc + lts_stride * slice;
ltc_intr = gk20a_readl(g, ltc_ltc0_lts0_intr_r() + offset);
/* Detect and handle ECC errors */
if (ltc_intr &
ltc_ltcs_ltss_intr_ecc_sec_error_pending_f()) {
u32 ecc_stats_reg_val;
nvgpu_err(g,
"Single bit error detected in GPU L2!");
ecc_stats_reg_val =
gk20a_readl(g,
ltc_ltc0_lts0_dstg_ecc_report_r() + offset);
g->ecc.gr.t18x.l2_sec_count.counters[ltc] +=
ltc_ltc0_lts0_dstg_ecc_report_sec_count_v(ecc_stats_reg_val);
ecc_stats_reg_val &=
~(ltc_ltc0_lts0_dstg_ecc_report_sec_count_m());
gk20a_writel(g,
ltc_ltc0_lts0_dstg_ecc_report_r() + offset,
ecc_stats_reg_val);
g->ops.mm.l2_flush(g, true);
}
if (ltc_intr &
ltc_ltcs_ltss_intr_ecc_ded_error_pending_f()) {
u32 ecc_stats_reg_val;
nvgpu_err(g,
"Double bit error detected in GPU L2!");
ecc_stats_reg_val =
gk20a_readl(g,
ltc_ltc0_lts0_dstg_ecc_report_r() + offset);
g->ecc.gr.t18x.l2_ded_count.counters[ltc] +=
ltc_ltc0_lts0_dstg_ecc_report_ded_count_v(ecc_stats_reg_val);
ecc_stats_reg_val &=
~(ltc_ltc0_lts0_dstg_ecc_report_ded_count_m());
gk20a_writel(g,
ltc_ltc0_lts0_dstg_ecc_report_r() + offset,
ecc_stats_reg_val);
}
nvgpu_err(g, "ltc%d, slice %d: %08x",
ltc, slice, ltc_intr);
gk20a_writel(g, ltc_ltc0_lts0_intr_r() +
ltc_stride * ltc + lts_stride * slice,
ltc_intr);
}
}
}
void gp10b_ltc_init_fs_state(struct gk20a *g)
{
u32 ltc_intr;
gm20b_ltc_init_fs_state(g);
gk20a_writel(g, ltc_ltca_g_axi_pctrl_r(),
ltc_ltca_g_axi_pctrl_user_sid_f(TEGRA_SID_GPUB));
/* Enable ECC interrupts */
ltc_intr = gk20a_readl(g, ltc_ltcs_ltss_intr_r());
ltc_intr |= ltc_ltcs_ltss_intr_en_ecc_sec_error_enabled_f() |
ltc_ltcs_ltss_intr_en_ecc_ded_error_enabled_f();
gk20a_writel(g, ltc_ltcs_ltss_intr_r(),
ltc_intr);
}
void gp10b_ltc_set_enabled(struct gk20a *g, bool enabled)
{
u32 reg_f = ltc_ltcs_ltss_tstg_set_mgmt_2_l2_bypass_mode_enabled_f();
u32 reg = gk20a_readl(g, ltc_ltcs_ltss_tstg_set_mgmt_2_r());
if (enabled)
/* bypass disabled (normal caching ops)*/
reg &= ~reg_f;
else
/* bypass enabled (no caching) */
reg |= reg_f;
gk20a_writel(g, ltc_ltcs_ltss_tstg_set_mgmt_2_r(), reg);
}
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