drivers/gpu/drm/nouveau/nvkm/subdev/bus/nv50.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/therm.h>
  28 #include <subdev/timer.h>
  29
  30 static int
  31 nv50_bus_hwsq_exec(struct nvkm_bus *bus, u32 *data, u32 size)
  32 {
  33         struct nvkm_device *device = bus->subdev.device;
  34         int i;
  35
  36         nvkm_mask(device, 0x001098, 0x00000008, 0x00000000);
  37         nvkm_wr32(device, 0x001304, 0x00000000);
  38         for (i = 0; i < size; i++)
  39                 nvkm_wr32(device, 0x001400 + (i * 4), data[i]);
  40         nvkm_mask(device, 0x001098, 0x00000018, 0x00000018);
  41         nvkm_wr32(device, 0x00130c, 0x00000003);
  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
  52 void
  53 nv50_bus_intr(struct nvkm_bus *bus)
  54 {
  55         struct nvkm_subdev *subdev = &bus->subdev;
  56         struct nvkm_device *device = subdev->device;
  57         u32 stat = nvkm_rd32(device, 0x001100) & nvkm_rd32(device, 0x001140);
  58
  59         if (stat & 0x00000008) {
  60                 u32 addr = nvkm_rd32(device, 0x009084);
  61                 u32 data = nvkm_rd32(device, 0x009088);
  62
  63                 nvkm_error(subdev, "MMIO %s of %08x FAULT at %06x\n",
  64                            (addr & 0x00000002) ? "write" : "read", data,
  65                            (addr & 0x00fffffc));
  66
  67                 stat &= ~0x00000008;
  68                 nvkm_wr32(device, 0x001100, 0x00000008);
  69         }
  70
  71         if (stat & 0x00010000) {
  72                 struct nvkm_therm *therm = device->therm;
  73                 if (therm)
  74                         nvkm_subdev_intr(&therm->subdev);
  75                 stat &= ~0x00010000;
  76                 nvkm_wr32(device, 0x001100, 0x00010000);
  77         }
  78
  79         if (stat) {
  80                 nvkm_error(subdev, "intr %08x\n", stat);
  81                 nvkm_mask(device, 0x001140, stat, 0);
  82         }
  83 }
  84
  85 void
  86 nv50_bus_init(struct nvkm_bus *bus)
  87 {
  88         struct nvkm_device *device = bus->subdev.device;
  89         nvkm_wr32(device, 0x001100, 0xffffffff);
  90         nvkm_wr32(device, 0x001140, 0x00010008);
  91 }
  92
  93 static const struct nvkm_bus_func
  94 nv50_bus = {
  95         .init = nv50_bus_init,
  96         .intr = nv50_bus_intr,
  97         .hwsq_exec = nv50_bus_hwsq_exec,
  98         .hwsq_size = 64,
  99 };
 100
 101 int
 102 nv50_bus_new(struct nvkm_device *device, int index, struct nvkm_bus **pbus)
 103 {
 104         return nvkm_bus_new_(&nv50_bus, device, index, pbus);
 105 }