LXR linux/drivers/gpu/drm/nouveau/nvkm/subdev/bus/g94.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
  27#include <subdev/timer.h>
  28
  29static int
  30g94_bus_hwsq_exec(struct nvkm_bus *bus, u32 *data, u32 size)
  31{
  32        struct nvkm_device *device = bus->subdev.device;
  33        int i;
  34
  35        nvkm_mask(device, 0x001098, 0x00000008, 0x00000000);
  36        nvkm_wr32(device, 0x001304, 0x00000000);
  37        nvkm_wr32(device, 0x001318, 0x00000000);
  38        for (i = 0; i < size; i++)
  39                nvkm_wr32(device, 0x080000 + (i * 4), data[i]);
  40        nvkm_mask(device, 0x001098, 0x00000018, 0x00000018);
  41        nvkm_wr32(device, 0x00130c, 0x00000001);
  42
  43        if (nvkm_msec(device, 2000,
  44                if (!(nvkm_rd32(device, 0x001308) & 0x00000100))
  45                        break;
  46        ) < 0)
  47                return -ETIMEDOUT;
  48
  49        return 0;
  50}
  51
  52static const struct nvkm_bus_func
  53g94_bus = {
  54        .init = nv50_bus_init,
  55        .intr = nv50_bus_intr,
  56        .hwsq_exec = g94_bus_hwsq_exec,
  57        .hwsq_size = 128,
  58};
  59
  60int
  61g94_bus_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
  62            struct nvkm_bus **pbus)
  63{
  64        return nvkm_bus_new_(&g94_bus, device, type, inst, pbus);
  65}
  66