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
  26 u32
  27 nv40_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
  33 void
  34 nv40_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
  40 void
  41 nv40_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
  47 void
  48 nv40_pci_msi_rearm(struct nvkm_pci *pci)
  49 {
  50         nvkm_pci_wr08(pci, 0x0068, 0xff);
  51 }
  52
  53 static const struct nvkm_pci_func
  54 nv40_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
  61 int
  62 nv40_pci_new(struct nvkm_device *device, int index, struct nvkm_pci **ppci)
  63 {
  64         return nvkm_pci_new_(&nv40_pci_func, device, index, ppci);
  65 }