LXR linux/drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmtu102.c

   1/*
   2 * Copyright 2018 Red Hat Inc.
   3 *
   4 * Permission is hereby granted, free of charge, to any person obtaining a
   5 * copy of this software and associated documentation files (the "Software"),
   6 * to deal in the Software without restriction, including without limitation
   7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8 * and/or sell copies of the Software, and to permit persons to whom the
   9 * Software is furnished to do so, subject to the following conditions:
  10 *
  11 * The above copyright notice and this permission notice shall be included in
  12 * all copies or substantial portions of the Software.
  13 *
  14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
  18 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  19 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  20 * OTHER DEALINGS IN THE SOFTWARE.
  21 */
  22#include "vmm.h"
  23
  24#include <subdev/timer.h>
  25
  26static void
  27tu102_vmm_flush(struct nvkm_vmm *vmm, int depth)
  28{
  29        struct nvkm_device *device = vmm->mmu->subdev.device;
  30        u32 type = (5 /* CACHE_LEVEL_UP_TO_PDE3 */ - depth) << 24;
  31
  32        type |= 0x00000001; /* PAGE_ALL */
  33        if (atomic_read(&vmm->engref[NVKM_SUBDEV_BAR]))
  34                type |= 0x00000004; /* HUB_ONLY */
  35
  36        mutex_lock(&vmm->mmu->mutex);
  37
  38        nvkm_wr32(device, 0xb830a0, vmm->pd->pt[0]->addr >> 8);
  39        nvkm_wr32(device, 0xb830a4, 0x00000000);
  40        nvkm_wr32(device, 0x100e68, 0x00000000);
  41        nvkm_wr32(device, 0xb830b0, 0x80000000 | type);
  42
  43        nvkm_msec(device, 2000,
  44                if (!(nvkm_rd32(device, 0xb830b0) & 0x80000000))
  45                        break;
  46        );
  47
  48        mutex_unlock(&vmm->mmu->mutex);
  49}
  50
  51static const struct nvkm_vmm_func
  52tu102_vmm = {
  53        .join = gv100_vmm_join,
  54        .part = gf100_vmm_part,
  55        .aper = gf100_vmm_aper,
  56        .valid = gp100_vmm_valid,
  57        .flush = tu102_vmm_flush,
  58        .mthd = gp100_vmm_mthd,
  59        .page = {
  60                { 47, &gp100_vmm_desc_16[4], NVKM_VMM_PAGE_Sxxx },
  61                { 38, &gp100_vmm_desc_16[3], NVKM_VMM_PAGE_Sxxx },
  62                { 29, &gp100_vmm_desc_16[2], NVKM_VMM_PAGE_Sxxx },
  63                { 21, &gp100_vmm_desc_16[1], NVKM_VMM_PAGE_SVxC },
  64                { 16, &gp100_vmm_desc_16[0], NVKM_VMM_PAGE_SVxC },
  65                { 12, &gp100_vmm_desc_12[0], NVKM_VMM_PAGE_SVHx },
  66                {}
  67        }
  68};
  69
  70int
  71tu102_vmm_new(struct nvkm_mmu *mmu, bool managed, u64 addr, u64 size,
  72              void *argv, u32 argc, struct lock_class_key *key,
  73              const char *name, struct nvkm_vmm **pvmm)
  74{
  75        return gp100_vmm_new_(&tu102_vmm, mmu, managed, addr, size,
  76                              argv, argc, key, name, pvmm);
  77}
  78