drivers/gpu/drm/nouveau/nvkm/subdev/devinit/gf100.c

   1 /*
   2  * Copyright 2013 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 "nv50.h"
  25
  26 #include <subdev/bios.h>
  27 #include <subdev/bios/init.h>
  28 #include <subdev/bios/pll.h>
  29 #include <subdev/clk/pll.h>
  30
  31 int
  32 gf100_devinit_pll_set(struct nvkm_devinit *init, u32 type, u32 freq)
  33 {
  34         struct nvkm_subdev *subdev = &init->subdev;
  35         struct nvkm_device *device = subdev->device;
  36         struct nvbios_pll info;
  37         int N, fN, M, P;
  38         int ret;
  39
  40         ret = nvbios_pll_parse(device->bios, type, &info);
  41         if (ret)
  42                 return ret;
  43
  44         ret = gt215_pll_calc(subdev, &info, freq, &N, &fN, &M, &P);
  45         if (ret < 0)
  46                 return ret;
  47
  48         switch (info.type) {
  49         case PLL_VPLL0:
  50         case PLL_VPLL1:
  51         case PLL_VPLL2:
  52         case PLL_VPLL3:
  53                 nvkm_mask(device, info.reg + 0x0c, 0x00000000, 0x00000100);
  54                 nvkm_wr32(device, info.reg + 0x04, (P << 16) | (N << 8) | M);
  55                 nvkm_wr32(device, info.reg + 0x10, fN << 16);
  56                 break;
  57         default:
  58                 nvkm_warn(subdev, "%08x/%dKhz unimplemented\n", type, freq);
  59                 ret = -EINVAL;
  60                 break;
  61         }
  62
  63         return ret;
  64 }
  65
  66 static u64
  67 gf100_devinit_disable(struct nvkm_devinit *init)
  68 {
  69         struct nvkm_device *device = init->subdev.device;
  70         u32 r022500 = nvkm_rd32(device, 0x022500);
  71         u64 disable = 0ULL;
  72
  73         if (r022500 & 0x00000001)
  74                 disable |= (1ULL << NVKM_ENGINE_DISP);
  75
  76         if (r022500 & 0x00000002) {
  77                 disable |= (1ULL << NVKM_ENGINE_MSPDEC);
  78                 disable |= (1ULL << NVKM_ENGINE_MSPPP);
  79         }
  80
  81         if (r022500 & 0x00000004)
  82                 disable |= (1ULL << NVKM_ENGINE_MSVLD);
  83         if (r022500 & 0x00000008)
  84                 disable |= (1ULL << NVKM_ENGINE_MSENC);
  85         if (r022500 & 0x00000100)
  86                 disable |= (1ULL << NVKM_ENGINE_CE0);
  87         if (r022500 & 0x00000200)
  88                 disable |= (1ULL << NVKM_ENGINE_CE1);
  89
  90         return disable;
  91 }
  92
  93 void
  94 gf100_devinit_preinit(struct nvkm_devinit *base)
  95 {
  96         struct nv50_devinit *init = nv50_devinit(base);
  97         struct nvkm_subdev *subdev = &init->base.subdev;
  98         struct nvkm_device *device = subdev->device;
  99
 100         /*
 101          * This bit is set by devinit, and flips back to 0 on suspend. We
 102          * can use it as a reliable way to know whether we should run devinit.
 103          */
 104         base->post = ((nvkm_rd32(device, 0x2240c) & BIT(1)) == 0);
 105 }
 106
 107 static const struct nvkm_devinit_func
 108 gf100_devinit = {
 109         .preinit = gf100_devinit_preinit,
 110         .init = nv50_devinit_init,
 111         .post = nv04_devinit_post,
 112         .pll_set = gf100_devinit_pll_set,
 113         .disable = gf100_devinit_disable,
 114 };
 115
 116 int
 117 gf100_devinit_new(struct nvkm_device *device, int index,
 118                 struct nvkm_devinit **pinit)
 119 {
 120         return nv50_devinit_new_(&gf100_devinit, device, index, pinit);
 121 }