drivers/gpu/drm/nouveau/nvkm/subdev/ibus/gf100.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
  26 static void
  27 gf100_ibus_intr_hub(struct nvkm_subdev *ibus, int i)
  28 {
  29         struct nvkm_device *device = ibus->device;
  30         u32 addr = nvkm_rd32(device, 0x122120 + (i * 0x0400));
  31         u32 data = nvkm_rd32(device, 0x122124 + (i * 0x0400));
  32         u32 stat = nvkm_rd32(device, 0x122128 + (i * 0x0400));
  33         nvkm_debug(ibus, "HUB%d: %06x %08x (%08x)\n", i, addr, data, stat);
  34         nvkm_mask(device, 0x122128 + (i * 0x0400), 0x00000200, 0x00000000);
  35 }
  36
  37 static void
  38 gf100_ibus_intr_rop(struct nvkm_subdev *ibus, int i)
  39 {
  40         struct nvkm_device *device = ibus->device;
  41         u32 addr = nvkm_rd32(device, 0x124120 + (i * 0x0400));
  42         u32 data = nvkm_rd32(device, 0x124124 + (i * 0x0400));
  43         u32 stat = nvkm_rd32(device, 0x124128 + (i * 0x0400));
  44         nvkm_debug(ibus, "ROP%d: %06x %08x (%08x)\n", i, addr, data, stat);
  45         nvkm_mask(device, 0x124128 + (i * 0x0400), 0x00000200, 0x00000000);
  46 }
  47
  48 static void
  49 gf100_ibus_intr_gpc(struct nvkm_subdev *ibus, int i)
  50 {
  51         struct nvkm_device *device = ibus->device;
  52         u32 addr = nvkm_rd32(device, 0x128120 + (i * 0x0400));
  53         u32 data = nvkm_rd32(device, 0x128124 + (i * 0x0400));
  54         u32 stat = nvkm_rd32(device, 0x128128 + (i * 0x0400));
  55         nvkm_debug(ibus, "GPC%d: %06x %08x (%08x)\n", i, addr, data, stat);
  56         nvkm_mask(device, 0x128128 + (i * 0x0400), 0x00000200, 0x00000000);
  57 }
  58
  59 void
  60 gf100_ibus_intr(struct nvkm_subdev *ibus)
  61 {
  62         struct nvkm_device *device = ibus->device;
  63         u32 intr0 = nvkm_rd32(device, 0x121c58);
  64         u32 intr1 = nvkm_rd32(device, 0x121c5c);
  65         u32 hubnr = nvkm_rd32(device, 0x121c70);
  66         u32 ropnr = nvkm_rd32(device, 0x121c74);
  67         u32 gpcnr = nvkm_rd32(device, 0x121c78);
  68         u32 i;
  69
  70         for (i = 0; (intr0 & 0x0000ff00) && i < hubnr; i++) {
  71                 u32 stat = 0x00000100 << i;
  72                 if (intr0 & stat) {
  73                         gf100_ibus_intr_hub(ibus, i);
  74                         intr0 &= ~stat;
  75                 }
  76         }
  77
  78         for (i = 0; (intr0 & 0xffff0000) && i < ropnr; i++) {
  79                 u32 stat = 0x00010000 << i;
  80                 if (intr0 & stat) {
  81                         gf100_ibus_intr_rop(ibus, i);
  82                         intr0 &= ~stat;
  83                 }
  84         }
  85
  86         for (i = 0; intr1 && i < gpcnr; i++) {
  87                 u32 stat = 0x00000001 << i;
  88                 if (intr1 & stat) {
  89                         gf100_ibus_intr_gpc(ibus, i);
  90                         intr1 &= ~stat;
  91                 }
  92         }
  93 }
  94
  95 static int
  96 gf100_ibus_init(struct nvkm_subdev *ibus)
  97 {
  98         struct nvkm_device *device = ibus->device;
  99         nvkm_mask(device, 0x122310, 0x0003ffff, 0x00000800);
 100         nvkm_wr32(device, 0x12232c, 0x00100064);
 101         nvkm_wr32(device, 0x122330, 0x00100064);
 102         nvkm_wr32(device, 0x122334, 0x00100064);
 103         nvkm_mask(device, 0x122348, 0x0003ffff, 0x00000100);
 104         return 0;
 105 }
 106
 107 static const struct nvkm_subdev_func
 108 gf100_ibus = {
 109         .init = gf100_ibus_init,
 110         .intr = gf100_ibus_intr,
 111 };
 112
 113 int
 114 gf100_ibus_new(struct nvkm_device *device, int index,
 115                struct nvkm_subdev **pibus)
 116 {
 117         struct nvkm_subdev *ibus;
 118         if (!(ibus = *pibus = kzalloc(sizeof(*ibus), GFP_KERNEL)))
 119                 return -ENOMEM;
 120         nvkm_subdev_ctor(&gf100_ibus, device, index, ibus);
 121         return 0;
 122 }