/*
* GV11B MMU
*
* Copyright (c) 2016-2018, 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/kmem.h>
#include <nvgpu/dma.h>
#include <nvgpu/log.h>
#include <nvgpu/mm.h>
#include <nvgpu/enabled.h>
#include "gk20a/gk20a.h"
#include "gk20a/mm_gk20a.h"
#include "gp10b/mm_gp10b.h"
#include "gp10b/mc_gp10b.h"
#include "mm_gv11b.h"
#include "fb_gv11b.h"
#include "subctx_gv11b.h"
#include <nvgpu/hw/gv11b/hw_fb_gv11b.h>
#include <nvgpu/hw/gv11b/hw_gmmu_gv11b.h>
#define NVGPU_L3_ALLOC_BIT BIT(36)
bool gv11b_mm_is_bar1_supported(struct gk20a *g)
{
return false;
}
void gv11b_init_inst_block(struct nvgpu_mem *inst_block,
struct vm_gk20a *vm, u32 big_page_size)
{
struct gk20a *g = gk20a_from_vm(vm);
nvgpu_log_info(g, "inst block phys = 0x%llx, kv = 0x%p",
nvgpu_inst_block_addr(g, inst_block), inst_block->cpu_va);
g->ops.mm.init_pdb(g, inst_block, vm);
if (big_page_size && g->ops.mm.set_big_page_size)
g->ops.mm.set_big_page_size(g, inst_block, big_page_size);
gv11b_init_subcontext_pdb(vm, inst_block, false);
}
bool gv11b_mm_mmu_fault_pending(struct gk20a *g)
{
return gv11b_fb_mmu_fault_pending(g);
}
void gv11b_mm_fault_info_mem_destroy(struct gk20a *g)
{
struct vm_gk20a *vm = g->mm.bar2.vm;
nvgpu_log_fn(g, " ");
nvgpu_mutex_acquire(&g->mm.hub_isr_mutex);
g->ops.fb.disable_hub_intr(g);
if ((gv11b_fb_is_fault_buf_enabled(g, NONREPLAY_REG_INDEX))) {
gv11b_fb_fault_buf_set_state_hw(g, NONREPLAY_REG_INDEX,
FAULT_BUF_DISABLED);
}
if ((gv11b_fb_is_fault_buf_enabled(g, REPLAY_REG_INDEX))) {
gv11b_fb_fault_buf_set_state_hw(g, REPLAY_REG_INDEX,
FAULT_BUF_DISABLED);
}
if (nvgpu_mem_is_valid(
&g->mm.hw_fault_buf[FAULT_TYPE_OTHER_AND_NONREPLAY]))
nvgpu_dma_unmap_free(vm,
&g->mm.hw_fault_buf[FAULT_TYPE_OTHER_AND_NONREPLAY]);
if (nvgpu_mem_is_valid(&g->mm.hw_fault_buf[FAULT_TYPE_REPLAY]))
nvgpu_dma_unmap_free(vm,
&g->mm.hw_fault_buf[FAULT_TYPE_REPLAY]);
nvgpu_mutex_release(&g->mm.hub_isr_mutex);
nvgpu_mutex_destroy(&g->mm.hub_isr_mutex);
}
static int gv11b_mm_mmu_fault_info_buf_init(struct gk20a *g)
{
return 0;
}
static void gv11b_mm_mmu_hw_fault_buf_init(struct gk20a *g)
{
struct vm_gk20a *vm = g->mm.bar2.vm;
int err = 0;
size_t fb_size;
/* Max entries take care of 1 entry used for full detection */
fb_size = (g->ops.fifo.get_num_fifos(g) + 1) *
gmmu_fault_buf_size_v();
if (!nvgpu_mem_is_valid(
&g->mm.hw_fault_buf[FAULT_TYPE_OTHER_AND_NONREPLAY])) {
err = nvgpu_dma_alloc_map_sys(vm, fb_size,
&g->mm.hw_fault_buf[FAULT_TYPE_OTHER_AND_NONREPLAY]);
if (err) {
nvgpu_err(g,
"Error in hw mmu fault buf [0] alloc in bar2 vm ");
/* Fault will be snapped in pri reg but not in buffer */
return;
}
}
if (!nvgpu_mem_is_valid(
&g->mm.hw_fault_buf[FAULT_TYPE_REPLAY])) {
err = nvgpu_dma_alloc_map_sys(vm, fb_size,
&g->mm.hw_fault_buf[FAULT_TYPE_REPLAY]);
if (err) {
nvgpu_err(g,
"Error in hw mmu fault buf [1] alloc in bar2 vm ");
/* Fault will be snapped in pri reg but not in buffer */
return;
}
}
}
static void gv11b_mm_mmu_fault_setup_hw(struct gk20a *g)
{
if (nvgpu_mem_is_valid(
&g->mm.hw_fault_buf[FAULT_TYPE_OTHER_AND_NONREPLAY]))
gv11b_fb_fault_buf_configure_hw(g, NONREPLAY_REG_INDEX);
if (nvgpu_mem_is_valid(&g->mm.hw_fault_buf[FAULT_TYPE_REPLAY]))
gv11b_fb_fault_buf_configure_hw(g, REPLAY_REG_INDEX);
}
static int gv11b_mm_mmu_fault_setup_sw(struct gk20a *g)
{
int err;
nvgpu_log_fn(g, " ");
nvgpu_mutex_init(&g->mm.hub_isr_mutex);
err = gv11b_mm_mmu_fault_info_buf_init(g);
if (!err)
gv11b_mm_mmu_hw_fault_buf_init(g);
return err;
}
int gv11b_init_mm_setup_hw(struct gk20a *g)
{
int err = 0;
nvgpu_log_fn(g, " ");
err = gk20a_init_mm_setup_hw(g);
err = gv11b_mm_mmu_fault_setup_sw(g);
if (!err)
gv11b_mm_mmu_fault_setup_hw(g);
nvgpu_log_fn(g, "end");
return err;
}
void gv11b_mm_l2_flush(struct gk20a *g, bool invalidate)
{
nvgpu_log(g, gpu_dbg_fn, "gv11b_mm_l2_flush");
g->ops.mm.fb_flush(g);
gk20a_mm_l2_flush(g, invalidate);
if (g->ops.bus.bar1_bind)
g->ops.fb.tlb_invalidate(g,
g->mm.bar1.vm->pdb.mem);
else
g->ops.mm.fb_flush(g);
}
/*
* On Volta the GPU determines whether to do L3 allocation for a mapping by
* checking bit 36 of the phsyical address. So if a mapping should allocte lines
* in the L3 this bit must be set.
*/
u64 gv11b_gpu_phys_addr(struct gk20a *g,
struct nvgpu_gmmu_attrs *attrs, u64 phys)
{
if (attrs && attrs->l3_alloc)
return phys | NVGPU_L3_ALLOC_BIT;
return phys;
}