/*
* GM20B GPC MMU
*
* 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 "gk20a/gk20a.h"
#include "gk20a/kind_gk20a.h"
#include "gk20a/fb_gk20a.h"
#include "gm20b/fb_gm20b.h"
#include <nvgpu/hw/gm20b/hw_fb_gm20b.h>
#include <nvgpu/hw/gm20b/hw_top_gm20b.h>
#include <nvgpu/hw/gm20b/hw_gmmu_gm20b.h>
#include <nvgpu/hw/gm20b/hw_gr_gm20b.h>
#define VPR_INFO_FETCH_WAIT (5)
static void fb_gm20b_init_fs_state(struct gk20a *g)
{
gk20a_dbg_info("initialize gm20b fb");
gk20a_writel(g, fb_fbhub_num_active_ltcs_r(),
g->ltc_count);
}
void gm20b_init_uncompressed_kind_map(void)
{
gk20a_init_uncompressed_kind_map();
gk20a_uc_kind_map[gmmu_pte_kind_s8_v()] =
gk20a_uc_kind_map[gmmu_pte_kind_s8_2s_v()] =
gmmu_pte_kind_s8_v();
}
static bool gm20b_kind_supported(u8 k)
{
return k == gmmu_pte_kind_smsked_message_v()
|| (k >= gmmu_pte_kind_s8_v() &&
k <= gmmu_pte_kind_s8_2s_v());
}
static bool gm20b_kind_z(u8 k)
{
return (k >= gmmu_pte_kind_s8_v() &&
k <= gmmu_pte_kind_s8_2s_v());
}
static bool gm20b_kind_compressible(u8 k)
{
return (k >= gmmu_pte_kind_s8_v() &&
k <= gmmu_pte_kind_s8_2s_v());
}
static bool gm20b_kind_zbc(u8 k)
{
return (k >= gmmu_pte_kind_s8_v() &&
k <= gmmu_pte_kind_s8_2s_v());
}
void gm20b_init_kind_attr(void)
{
u16 k;
gk20a_init_kind_attr();
for (k = 0; k < 256; k++) {
if (gm20b_kind_supported((u8)k))
gk20a_kind_attr[k] |= GK20A_KIND_ATTR_SUPPORTED;
if (gm20b_kind_compressible((u8)k))
gk20a_kind_attr[k] |= GK20A_KIND_ATTR_COMPRESSIBLE;
if (gm20b_kind_z((u8)k))
gk20a_kind_attr[k] |= GK20A_KIND_ATTR_Z;
if (gm20b_kind_zbc((u8)k))
gk20a_kind_attr[k] |= GK20A_KIND_ATTR_ZBC;
}
}
static void gm20b_fb_set_mmu_page_size(struct gk20a *g)
{
/* set large page size in fb */
u32 fb_mmu_ctrl = gk20a_readl(g, fb_mmu_ctrl_r());
fb_mmu_ctrl |= fb_mmu_ctrl_use_pdb_big_page_size_true_f();
gk20a_writel(g, fb_mmu_ctrl_r(), fb_mmu_ctrl);
}
static bool gm20b_fb_set_use_full_comp_tag_line(struct gk20a *g)
{
/* set large page size in fb */
u32 fb_mmu_ctrl = gk20a_readl(g, fb_mmu_ctrl_r());
fb_mmu_ctrl |= fb_mmu_ctrl_use_full_comp_tag_line_true_f();
gk20a_writel(g, fb_mmu_ctrl_r(), fb_mmu_ctrl);
return true;
}
static unsigned int gm20b_fb_compression_page_size(struct gk20a *g)
{
return SZ_128K;
}
static unsigned int gm20b_fb_compressible_page_size(struct gk20a *g)
{
return SZ_64K;
}
static void gm20b_fb_dump_vpr_wpr_info(struct gk20a *g)
{
u32 val;
/* print vpr and wpr info */
val = gk20a_readl(g, fb_mmu_vpr_info_r());
val &= ~0x3;
val |= fb_mmu_vpr_info_index_addr_lo_v();
gk20a_writel(g, fb_mmu_vpr_info_r(), val);
nvgpu_err(g, "VPR: %08x %08x %08x %08x",
gk20a_readl(g, fb_mmu_vpr_info_r()),
gk20a_readl(g, fb_mmu_vpr_info_r()),
gk20a_readl(g, fb_mmu_vpr_info_r()),
gk20a_readl(g, fb_mmu_vpr_info_r()));
val = gk20a_readl(g, fb_mmu_wpr_info_r());
val &= ~0xf;
val |= (fb_mmu_wpr_info_index_allow_read_v());
gk20a_writel(g, fb_mmu_wpr_info_r(), val);
nvgpu_err(g, "WPR: %08x %08x %08x %08x %08x %08x",
gk20a_readl(g, fb_mmu_wpr_info_r()),
gk20a_readl(g, fb_mmu_wpr_info_r()),
gk20a_readl(g, fb_mmu_wpr_info_r()),
gk20a_readl(g, fb_mmu_wpr_info_r()),
gk20a_readl(g, fb_mmu_wpr_info_r()),
gk20a_readl(g, fb_mmu_wpr_info_r()));
}
static int gm20b_fb_vpr_info_fetch_wait(struct gk20a *g,
unsigned int msec)
{
struct nvgpu_timeout timeout;
nvgpu_timeout_init(g, &timeout, msec, NVGPU_TIMER_CPU_TIMER);
do {
u32 val;
val = gk20a_readl(g, fb_mmu_vpr_info_r());
if (fb_mmu_vpr_info_fetch_v(val) ==
fb_mmu_vpr_info_fetch_false_v())
return 0;
} while (!nvgpu_timeout_expired(&timeout));
return -ETIMEDOUT;
}
static int gm20b_fb_vpr_info_fetch(struct gk20a *g)
{
if (gm20b_fb_vpr_info_fetch_wait(g, VPR_INFO_FETCH_WAIT)) {
return -ETIME;
}
gk20a_writel(g, fb_mmu_vpr_info_r(),
fb_mmu_vpr_info_fetch_true_v());
return gm20b_fb_vpr_info_fetch_wait(g, VPR_INFO_FETCH_WAIT);
}
static bool gm20b_fb_debug_mode_enabled(struct gk20a *g)
{
u32 debug_ctrl = gk20a_readl(g, gr_gpcs_pri_mmu_debug_ctrl_r());
return gr_gpcs_pri_mmu_debug_ctrl_debug_v(debug_ctrl) ==
gr_gpcs_pri_mmu_debug_ctrl_debug_enabled_v();
}
static void gm20b_fb_set_debug_mode(struct gk20a *g, bool enable)
{
u32 reg_val, fb_debug_ctrl, gpc_debug_ctrl;
if (enable) {
fb_debug_ctrl = fb_mmu_debug_ctrl_debug_enabled_f();
gpc_debug_ctrl = gr_gpcs_pri_mmu_debug_ctrl_debug_enabled_f();
g->mmu_debug_ctrl = true;
} else {
fb_debug_ctrl = fb_mmu_debug_ctrl_debug_disabled_f();
gpc_debug_ctrl = gr_gpcs_pri_mmu_debug_ctrl_debug_disabled_f();
g->mmu_debug_ctrl = false;
}
reg_val = gk20a_readl(g, fb_mmu_debug_ctrl_r());
reg_val = set_field(reg_val,
fb_mmu_debug_ctrl_debug_m(), fb_debug_ctrl);
gk20a_writel(g, fb_mmu_debug_ctrl_r(), reg_val);
reg_val = gk20a_readl(g, gr_gpcs_pri_mmu_debug_ctrl_r());
reg_val = set_field(reg_val,
gr_gpcs_pri_mmu_debug_ctrl_debug_m(), gpc_debug_ctrl);
gk20a_writel(g, gr_gpcs_pri_mmu_debug_ctrl_r(), reg_val);
}
void gm20b_init_fb(struct gpu_ops *gops)
{
gops->fb.reset = fb_gk20a_reset;
gops->fb.init_hw = gk20a_fb_init_hw;
gops->fb.init_fs_state = fb_gm20b_init_fs_state;
gops->fb.set_mmu_page_size = gm20b_fb_set_mmu_page_size;
gops->fb.set_use_full_comp_tag_line = gm20b_fb_set_use_full_comp_tag_line;
gops->fb.compression_page_size = gm20b_fb_compression_page_size;
gops->fb.compressible_page_size = gm20b_fb_compressible_page_size;
gops->fb.vpr_info_fetch = gm20b_fb_vpr_info_fetch;
gops->fb.dump_vpr_wpr_info = gm20b_fb_dump_vpr_wpr_info;
gops->fb.is_debug_mode_enabled = gm20b_fb_debug_mode_enabled;
gops->fb.set_debug_mode = gm20b_fb_set_debug_mode;
gops->fb.tlb_invalidate = gk20a_fb_tlb_invalidate;
gm20b_init_uncompressed_kind_map();
gm20b_init_kind_attr();
}
