drivers/gpu/drm/nouveau/nvkm/subdev/ibus/gk104.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 gk104_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 * 0x0800));
  31         u32 data = nvkm_rd32(device, 0x122124 + (i * 0x0800));
  32         u32 stat = nvkm_rd32(device, 0x122128 + (i * 0x0800));
  33         nvkm_debug(ibus, "HUB%d: %06x %08x (%08x)\n", i, addr, data, stat);
  34         nvkm_mask(device, 0x122128 + (i * 0x0800), 0x00000200, 0x00000000);
  35 }
  36
  37 static void
  38 gk104_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 * 0x0800));
  42         u32 data = nvkm_rd32(device, 0x124124 + (i * 0x0800));
  43         u32 stat = nvkm_rd32(device, 0x124128 + (i * 0x0800));
  44         nvkm_debug(ibus, "ROP%d: %06x %08x (%08x)\n", i, addr, data, stat);
  45         nvkm_mask(device, 0x124128 + (i * 0x0800), 0x00000200, 0x00000000);
  46 }
  47
  48 static void
  49 gk104_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 * 0x0800));
  53         u32 data = nvkm_rd32(device, 0x128124 + (i * 0x0800));
  54         u32 stat = nvkm_rd32(device, 0x128128 + (i * 0x0800));
  55         nvkm_debug(ibus, "GPC%d: %06x %08x (%08x)\n", i, addr, data, stat);
  56         nvkm_mask(device, 0x128128 + (i * 0x0800), 0x00000200, 0x00000000);
  57 }
  58
  59 void
  60 gk104_ibus_intr(struct nvkm_subdev *ibus)
  61 {
  62         struct nvkm_device *device = ibus->device;
  63         u32 intr0 = nvkm_rd32(device, 0x120058);
  64         u32 intr1 = nvkm_rd32(device, 0x12005c);
  65         u32 hubnr = nvkm_rd32(device, 0x120070);
  66         u32 ropnr = nvkm_rd32(device, 0x120074);
  67         u32 gpcnr = nvkm_rd32(device, 0x120078);
  68         u32 i;
  69
  70         for (i = 0; (intr0 & 0x0000ff00) && i < hubnr; i++) {
  71                 u32 stat = 0x00000100 << i;
  72                 if (intr0 & stat) {
  73                         gk104_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                         gk104_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                         gk104_ibus_intr_gpc(ibus, i);
  90                         intr1 &= ~stat;
  91                 }
  92         }
  93 }
  94
  95 static int
  96 gk104_ibus_init(struct nvkm_subdev *ibus)
  97 {
  98         struct nvkm_device *device = ibus->device;
  99         nvkm_mask(device, 0x122318, 0x0003ffff, 0x00001000);
 100         nvkm_mask(device, 0x12231c, 0x0003ffff, 0x00000200);
 101         nvkm_mask(device, 0x122310, 0x0003ffff, 0x00000800);
 102         nvkm_mask(device, 0x122348, 0x0003ffff, 0x00000100);
 103         nvkm_mask(device, 0x1223b0, 0x0003ffff, 0x00000fff);
 104         nvkm_mask(device, 0x122348, 0x0003ffff, 0x00000200);
 105         nvkm_mask(device, 0x122358, 0x0003ffff, 0x00002880);
 106         return 0;
 107 }
 108
 109 static const struct nvkm_subdev_func
 110 gk104_ibus = {
 111         .preinit = gk104_ibus_init,
 112         .init = gk104_ibus_init,
 113         .intr = gk104_ibus_intr,
 114 };
 115
 116 int
 117 gk104_ibus_new(struct nvkm_device *device, int index,
 118                struct nvkm_subdev **pibus)
 119 {
 120         return nvkm_subdev_new_(&gk104_ibus, device, index, pibus);
 121 }