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
  26 static void
  27 tu102_vmm_flush(struct nvkm_vmm *vmm, int depth)
  28 {
  29         struct nvkm_device *device = vmm->mmu->subdev.device;
  30         u32 type = 0;
  31
  32         type |= 0x00000001; /* PAGE_ALL */
  33         if (atomic_read(&vmm->engref[NVKM_SUBDEV_BAR]))
  34                 type |= 0x00000006; /* HUB_ONLY | ALL PDB (hack) */
  35
  36         mutex_lock(&vmm->mmu->mutex);
  37
  38         if (!vmm->rm.bar2_pdb)
  39                 nvkm_wr32(device, 0xb830a0, vmm->pd->pt[0]->addr >> 8);
  40         else
  41                 nvkm_wr32(device, 0xb830a0, vmm->rm.bar2_pdb >> 8);
  42         nvkm_wr32(device, 0xb830a4, 0x00000000);
  43         nvkm_wr32(device, 0xb830b0, 0x80000000 | type);
  44
  45         nvkm_msec(device, 2000,
  46                 if (!(nvkm_rd32(device, 0xb830b0) & 0x80000000))
  47                         break;
  48         );
  49
  50         mutex_unlock(&vmm->mmu->mutex);
  51 }
  52
  53 static const struct nvkm_vmm_func
  54 tu102_vmm = {
  55         .join = gv100_vmm_join,
  56         .part = gf100_vmm_part,
  57         .aper = gf100_vmm_aper,
  58         .valid = gp100_vmm_valid,
  59         .flush = tu102_vmm_flush,
  60         .mthd = gp100_vmm_mthd,
  61         .page = {
  62                 { 47, &gp100_vmm_desc_16[4], NVKM_VMM_PAGE_Sxxx },
  63                 { 38, &gp100_vmm_desc_16[3], NVKM_VMM_PAGE_Sxxx },
  64                 { 29, &gp100_vmm_desc_16[2], NVKM_VMM_PAGE_Sxxx },
  65                 { 21, &gp100_vmm_desc_16[1], NVKM_VMM_PAGE_SVxC },
  66                 { 16, &gp100_vmm_desc_16[0], NVKM_VMM_PAGE_SVxC },
  67                 { 12, &gp100_vmm_desc_12[0], NVKM_VMM_PAGE_SVHx },
  68                 {}
  69         }
  70 };
  71
  72 int
  73 tu102_vmm_new(struct nvkm_mmu *mmu, bool managed, u64 addr, u64 size,
  74               void *argv, u32 argc, struct lock_class_key *key,
  75               const char *name, struct nvkm_vmm **pvmm)
  76 {
  77         return gp100_vmm_new_(&tu102_vmm, mmu, managed, addr, size,
  78                               argv, argc, key, name, pvmm);
  79 }