LXR linux/drivers/gpu/drm/nouveau/nvkm/subdev/mc/nv04.c

   1/*
   2 * Copyright 2012 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
  23 */
  24#include "priv.h"
  25
  26const struct nvkm_mc_map
  27nv04_mc_reset[] = {
  28        { 0x00001000, NVKM_ENGINE_GR },
  29        { 0x00000100, NVKM_ENGINE_FIFO },
  30        {}
  31};
  32
  33static const struct nvkm_mc_map
  34nv04_mc_intr[] = {
  35        { 0x01010000, NVKM_ENGINE_DISP },
  36        { 0x00001000, NVKM_ENGINE_GR },
  37        { 0x00000100, NVKM_ENGINE_FIFO },
  38        { 0x10000000, NVKM_SUBDEV_BUS },
  39        { 0x00100000, NVKM_SUBDEV_TIMER },
  40        {}
  41};
  42
  43void
  44nv04_mc_intr_unarm(struct nvkm_mc *mc)
  45{
  46        struct nvkm_device *device = mc->subdev.device;
  47        nvkm_wr32(device, 0x000140, 0x00000000);
  48        nvkm_rd32(device, 0x000140);
  49}
  50
  51void
  52nv04_mc_intr_rearm(struct nvkm_mc *mc)
  53{
  54        struct nvkm_device *device = mc->subdev.device;
  55        nvkm_wr32(device, 0x000140, 0x00000001);
  56}
  57
  58u32
  59nv04_mc_intr_stat(struct nvkm_mc *mc)
  60{
  61        return nvkm_rd32(mc->subdev.device, 0x000100);
  62}
  63
  64void
  65nv04_mc_init(struct nvkm_mc *mc)
  66{
  67        struct nvkm_device *device = mc->subdev.device;
  68        nvkm_wr32(device, 0x000200, 0xffffffff); /* everything enabled */
  69        nvkm_wr32(device, 0x001850, 0x00000001); /* disable rom access */
  70}
  71
  72static const struct nvkm_mc_func
  73nv04_mc = {
  74        .init = nv04_mc_init,
  75        .intr = nv04_mc_intr,
  76        .intr_unarm = nv04_mc_intr_unarm,
  77        .intr_rearm = nv04_mc_intr_rearm,
  78        .intr_stat = nv04_mc_intr_stat,
  79        .reset = nv04_mc_reset,
  80};
  81
  82int
  83nv04_mc_new(struct nvkm_device *device, int index, struct nvkm_mc **pmc)
  84{
  85        return nvkm_mc_new_(&nv04_mc, device, index, pmc);
  86}
  87