LXR linux/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
  26static void
  27gf100_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
  37static void
  38gf100_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
  48static void
  49gf100_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
  59void
  60gf100_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
  95static int
  96gf100_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
 107static const struct nvkm_subdev_func
 108gf100_ibus = {
 109        .init = gf100_ibus_init,
 110        .intr = gf100_ibus_intr,
 111};
 112
 113int
 114gf100_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}
 123