LXR linux/drivers/gpu/drm/nouveau/nvkm/subdev/pci/nv40.c

   1/*
   2 * Copyright 2015 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 * Authors: Ben Skeggs <bskeggs@redhat.com>
  23 */
  24#include "priv.h"
  25
  26u32
  27nv40_pci_rd32(struct nvkm_pci *pci, u16 addr)
  28{
  29        struct nvkm_device *device = pci->subdev.device;
  30        return nvkm_rd32(device, 0x088000 + addr);
  31}
  32
  33void
  34nv40_pci_wr08(struct nvkm_pci *pci, u16 addr, u8 data)
  35{
  36        struct nvkm_device *device = pci->subdev.device;
  37        nvkm_wr08(device, 0x088000 + addr, data);
  38}
  39
  40void
  41nv40_pci_wr32(struct nvkm_pci *pci, u16 addr, u32 data)
  42{
  43        struct nvkm_device *device = pci->subdev.device;
  44        nvkm_wr32(device, 0x088000 + addr, data);
  45}
  46
  47void
  48nv40_pci_msi_rearm(struct nvkm_pci *pci)
  49{
  50        nvkm_pci_wr08(pci, 0x0068, 0xff);
  51}
  52
  53static const struct nvkm_pci_func
  54nv40_pci_func = {
  55        .rd32 = nv40_pci_rd32,
  56        .wr08 = nv40_pci_wr08,
  57        .wr32 = nv40_pci_wr32,
  58        .msi_rearm = nv40_pci_msi_rearm,
  59};
  60
  61int
  62nv40_pci_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
  63             struct nvkm_pci **ppci)
  64{
  65        return nvkm_pci_new_(&nv40_pci_func, device, type, inst, ppci);
  66}
  67