LXR linux/drivers/gpu/drm/nouveau/nvkm/subdev/bus/gf100.c

   1/*
   2 * Copyright 2012 Nouveau Community
   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: Martin Peres <martin.peres@labri.fr>
  23 *          Ben Skeggs
  24 */
  25#include "priv.h"
  26
  27static void
  28gf100_bus_intr(struct nvkm_bus *bus)
  29{
  30        struct nvkm_subdev *subdev = &bus->subdev;
  31        struct nvkm_device *device = subdev->device;
  32        u32 stat = nvkm_rd32(device, 0x001100) & nvkm_rd32(device, 0x001140);
  33
  34        if (stat & 0x0000000e) {
  35                u32 addr = nvkm_rd32(device, 0x009084);
  36                u32 data = nvkm_rd32(device, 0x009088);
  37
  38                nvkm_error(subdev,
  39                           "MMIO %s of %08x FAULT at %06x [ %s%s%s]\n",
  40                           (addr & 0x00000002) ? "write" : "read", data,
  41                           (addr & 0x00fffffc),
  42                           (stat & 0x00000002) ? "!ENGINE " : "",
  43                           (stat & 0x00000004) ? "IBUS " : "",
  44                           (stat & 0x00000008) ? "TIMEOUT " : "");
  45
  46                nvkm_wr32(device, 0x009084, 0x00000000);
  47                nvkm_wr32(device, 0x001100, (stat & 0x0000000e));
  48                stat &= ~0x0000000e;
  49        }
  50
  51        if (stat) {
  52                nvkm_error(subdev, "intr %08x\n", stat);
  53                nvkm_mask(device, 0x001140, stat, 0x00000000);
  54        }
  55}
  56
  57static void
  58gf100_bus_init(struct nvkm_bus *bus)
  59{
  60        struct nvkm_device *device = bus->subdev.device;
  61        nvkm_wr32(device, 0x001100, 0xffffffff);
  62        nvkm_wr32(device, 0x001140, 0x0000000e);
  63}
  64
  65static const struct nvkm_bus_func
  66gf100_bus = {
  67        .init = gf100_bus_init,
  68        .intr = gf100_bus_intr,
  69};
  70
  71int
  72gf100_bus_new(struct nvkm_device *device, int index, struct nvkm_bus **pbus)
  73{
  74        return nvkm_bus_new_(&gf100_bus, device, index, pbus);
  75}
  76