drivers/gpu/drm/nouveau/nvkm/subdev/mmu/vmmgf100.c

   1 /*
   2  * Copyright 2017 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/fb.h>
  25
  26 const struct nvkm_vmm_desc_func
  27 gf100_vmm_pgt = {
  28 };
  29
  30 const struct nvkm_vmm_desc_func
  31 gf100_vmm_pgd = {
  32 };
  33
  34 static const struct nvkm_vmm_desc
  35 gf100_vmm_desc_17_12[] = {
  36         { SPT, 15, 8, 0x1000, &gf100_vmm_pgt },
  37         { PGD, 13, 8, 0x1000, &gf100_vmm_pgd },
  38         {}
  39 };
  40
  41 static const struct nvkm_vmm_desc
  42 gf100_vmm_desc_17_17[] = {
  43         { LPT, 10, 8, 0x1000, &gf100_vmm_pgt },
  44         { PGD, 13, 8, 0x1000, &gf100_vmm_pgd },
  45         {}
  46 };
  47
  48 static const struct nvkm_vmm_desc
  49 gf100_vmm_desc_16_12[] = {
  50         { SPT, 14, 8, 0x1000, &gf100_vmm_pgt },
  51         { PGD, 14, 8, 0x1000, &gf100_vmm_pgd },
  52         {}
  53 };
  54
  55 static const struct nvkm_vmm_desc
  56 gf100_vmm_desc_16_16[] = {
  57         { LPT, 10, 8, 0x1000, &gf100_vmm_pgt },
  58         { PGD, 14, 8, 0x1000, &gf100_vmm_pgd },
  59         {}
  60 };
  61
  62 void
  63 gf100_vmm_part(struct nvkm_vmm *vmm, struct nvkm_memory *inst)
  64 {
  65         nvkm_fo64(inst, 0x0200, 0x00000000, 2);
  66 }
  67
  68 int
  69 gf100_vmm_join_(struct nvkm_vmm *vmm, struct nvkm_memory *inst, u64 base)
  70 {
  71         struct nvkm_mmu_pt *pd = vmm->pd->pt[0];
  72
  73         switch (nvkm_memory_target(pd->memory)) {
  74         case NVKM_MEM_TARGET_VRAM: base |= 0ULL << 0; break;
  75         case NVKM_MEM_TARGET_HOST: base |= 2ULL << 0;
  76                 base |= BIT_ULL(2) /* VOL. */;
  77                 break;
  78         case NVKM_MEM_TARGET_NCOH: base |= 3ULL << 0; break;
  79         default:
  80                 WARN_ON(1);
  81                 return -EINVAL;
  82         }
  83         base |= pd->addr;
  84
  85         nvkm_kmap(inst);
  86         nvkm_wo64(inst, 0x0200, base);
  87         nvkm_wo64(inst, 0x0208, vmm->limit - 1);
  88         nvkm_done(inst);
  89         return 0;
  90 }
  91
  92 int
  93 gf100_vmm_join(struct nvkm_vmm *vmm, struct nvkm_memory *inst)
  94 {
  95         return gf100_vmm_join_(vmm, inst, 0);
  96 }
  97
  98 static const struct nvkm_vmm_func
  99 gf100_vmm_17 = {
 100         .join = gf100_vmm_join,
 101         .part = gf100_vmm_part,
 102         .page = {
 103                 { 17, &gf100_vmm_desc_17_17[0], NVKM_VMM_PAGE_xVxC },
 104                 { 12, &gf100_vmm_desc_17_12[0], NVKM_VMM_PAGE_xVHx },
 105                 {}
 106         }
 107 };
 108
 109 static const struct nvkm_vmm_func
 110 gf100_vmm_16 = {
 111         .join = gf100_vmm_join,
 112         .part = gf100_vmm_part,
 113         .page = {
 114                 { 16, &gf100_vmm_desc_16_16[0], NVKM_VMM_PAGE_xVxC },
 115                 { 12, &gf100_vmm_desc_16_12[0], NVKM_VMM_PAGE_xVHx },
 116                 {}
 117         }
 118 };
 119
 120 int
 121 gf100_vmm_new_(const struct nvkm_vmm_func *func_16,
 122                const struct nvkm_vmm_func *func_17,
 123                struct nvkm_mmu *mmu, u64 addr, u64 size, void *argv, u32 argc,
 124                struct lock_class_key *key, const char *name,
 125                struct nvkm_vmm **pvmm)
 126 {
 127         switch (mmu->subdev.device->fb->page) {
 128         case 16: return nv04_vmm_new_(func_16, mmu, 0, addr, size,
 129                                       argv, argc, key, name, pvmm);
 130         case 17: return nv04_vmm_new_(func_17, mmu, 0, addr, size,
 131                                       argv, argc, key, name, pvmm);
 132         default:
 133                 WARN_ON(1);
 134                 return -EINVAL;
 135         }
 136 }
 137
 138 int
 139 gf100_vmm_new(struct nvkm_mmu *mmu, u64 addr, u64 size, void *argv, u32 argc,
 140               struct lock_class_key *key, const char *name,
 141               struct nvkm_vmm **pvmm)
 142 {
 143         return gf100_vmm_new_(&gf100_vmm_16, &gf100_vmm_17, mmu, addr,
 144                               size, argv, argc, key, name, pvmm);
 145 }