linux-nvgpu/drivers/gpu/nvgpu/hal/ltc/ltc_gm20b_dbg.c

/*
 * GM20B L2
 *
 * Copyright (c) 2014-2020 NVIDIA CORPORATION.  All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */

#include <nvgpu/trace.h>
#include <nvgpu/timers.h>
#include <nvgpu/enabled.h>
#include <nvgpu/bug.h>
#include <nvgpu/ltc.h>
#include <nvgpu/fbp.h>
#include <nvgpu/io.h>
#include <nvgpu/utils.h>
#include <nvgpu/gk20a.h>
#include <nvgpu/static_analysis.h>

#include <nvgpu/hw/gm20b/hw_ltc_gm20b.h>

#include "ltc_gm20b.h"

#ifdef CONFIG_NVGPU_DEBUGGER
/*
 * LTC pri addressing
 */
bool gm20b_ltc_pri_is_ltc_addr(struct gk20a *g, u32 addr)
{
	return ((addr >= ltc_pltcg_base_v()) && (addr < ltc_pltcg_extent_v()));
}

bool gm20b_ltc_is_ltcs_ltss_addr(struct gk20a *g, u32 addr)
{
	u32 ltc_shared_base = ltc_ltcs_ltss_v();
	u32 lts_stride = nvgpu_get_litter_value(g, GPU_LIT_LTS_STRIDE);

	if (addr >= ltc_shared_base) {
		return (addr < nvgpu_safe_add_u32(ltc_shared_base, lts_stride));
	}
	return false;
}

bool gm20b_ltc_is_ltcn_ltss_addr(struct gk20a *g, u32 addr)
{
	u32 lts_shared_base = ltc_ltc0_ltss_v();
	u32 lts_stride = nvgpu_get_litter_value(g, GPU_LIT_LTS_STRIDE);
	u32 addr_mask = nvgpu_get_litter_value(g, GPU_LIT_LTC_STRIDE) - 1U;
	u32 base_offset = lts_shared_base & addr_mask;
	u32 end_offset = nvgpu_safe_add_u32(base_offset, lts_stride);

	return (!gm20b_ltc_is_ltcs_ltss_addr(g, addr)) &&
		((addr & addr_mask) >= base_offset) &&
		((addr & addr_mask) < end_offset);
}

static void gm20b_ltc_update_ltc_lts_addr(struct gk20a *g, u32 addr,
		u32 ltc_num, u32 *priv_addr_table, u32 *priv_addr_table_index)
{
	u32 num_ltc_slices = g->ops.top.get_max_lts_per_ltc(g);
	u32 index = *priv_addr_table_index;
	u32 lts_num;
	u32 ltc_stride = nvgpu_get_litter_value(g, GPU_LIT_LTC_STRIDE);
	u32 lts_stride = nvgpu_get_litter_value(g, GPU_LIT_LTS_STRIDE);

	for (lts_num = 0; lts_num < num_ltc_slices;
				lts_num = nvgpu_safe_add_u32(lts_num, 1U)) {
		priv_addr_table[index] = nvgpu_safe_add_u32(
			ltc_ltc0_lts0_v(),
			nvgpu_safe_add_u32(
				nvgpu_safe_add_u32(
				nvgpu_safe_mult_u32(ltc_num, ltc_stride),
				nvgpu_safe_mult_u32(lts_num, lts_stride)),
						(addr & nvgpu_safe_sub_u32(
							lts_stride, 1U))));
		index = nvgpu_safe_add_u32(index, 1U);
	}

	*priv_addr_table_index = index;
}

void gm20b_ltc_split_lts_broadcast_addr(struct gk20a *g, u32 addr,
					u32 *priv_addr_table,
					u32 *priv_addr_table_index)
{
	u32 num_ltc = g->ltc->ltc_count;
	u32 i, start, ltc_num = 0;
	u32 pltcg_base = ltc_pltcg_base_v();
	u32 ltc_stride = nvgpu_get_litter_value(g, GPU_LIT_LTC_STRIDE);

	for (i = 0; i < num_ltc; i++) {
		start = nvgpu_safe_add_u32(pltcg_base,
				nvgpu_safe_mult_u32(i, ltc_stride));
		if (addr >= start) {
			if (addr < nvgpu_safe_add_u32(start, ltc_stride)) {
				ltc_num = i;
				break;
			}
		}
	}
	gm20b_ltc_update_ltc_lts_addr(g, addr, ltc_num, priv_addr_table,
				priv_addr_table_index);
}

void gm20b_ltc_split_ltc_broadcast_addr(struct gk20a *g, u32 addr,
					u32 *priv_addr_table,
					u32 *priv_addr_table_index)
{
	u32 num_ltc = g->ltc->ltc_count;
	u32 ltc_num;

	for (ltc_num = 0; ltc_num < num_ltc; ltc_num =
					nvgpu_safe_add_u32(ltc_num, 1U)) {
		gm20b_ltc_update_ltc_lts_addr(g, addr, ltc_num,
					priv_addr_table, priv_addr_table_index);
	}
}
#endif /* CONFIG_NVGPU_DEBUGGER */