drivers/gpu/drm/nouveau/nvkm/engine/disp/rootgf119.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 "rootnv50.h"
  25 #include "head.h"
  26 #include "dmacnv50.h"
  27
  28 #include <core/ramht.h>
  29 #include <subdev/timer.h>
  30
  31 #include <nvif/class.h>
  32
  33 void
  34 gf119_disp_root_fini(struct nv50_disp_root *root)
  35 {
  36         struct nvkm_device *device = root->disp->base.engine.subdev.device;
  37         /* disable all interrupts */
  38         nvkm_wr32(device, 0x6100b0, 0x00000000);
  39 }
  40
  41 int
  42 gf119_disp_root_init(struct nv50_disp_root *root)
  43 {
  44         struct nv50_disp *disp = root->disp;
  45         struct nvkm_head *head;
  46         struct nvkm_device *device = disp->base.engine.subdev.device;
  47         u32 tmp;
  48         int i;
  49
  50         /* The below segments of code copying values from one register to
  51          * another appear to inform EVO of the display capabilities or
  52          * something similar.
  53          */
  54
  55         /* ... CRTC caps */
  56         list_for_each_entry(head, &disp->base.head, head) {
  57                 const u32 hoff = head->id * 0x800;
  58                 tmp = nvkm_rd32(device, 0x616104 + hoff);
  59                 nvkm_wr32(device, 0x6101b4 + hoff, tmp);
  60                 tmp = nvkm_rd32(device, 0x616108 + hoff);
  61                 nvkm_wr32(device, 0x6101b8 + hoff, tmp);
  62                 tmp = nvkm_rd32(device, 0x61610c + hoff);
  63                 nvkm_wr32(device, 0x6101bc + hoff, tmp);
  64         }
  65
  66         /* ... DAC caps */
  67         for (i = 0; i < disp->func->dac.nr; i++) {
  68                 tmp = nvkm_rd32(device, 0x61a000 + (i * 0x800));
  69                 nvkm_wr32(device, 0x6101c0 + (i * 0x800), tmp);
  70         }
  71
  72         /* ... SOR caps */
  73         for (i = 0; i < disp->func->sor.nr; i++) {
  74                 tmp = nvkm_rd32(device, 0x61c000 + (i * 0x800));
  75                 nvkm_wr32(device, 0x6301c4 + (i * 0x800), tmp);
  76         }
  77
  78         /* steal display away from vbios, or something like that */
  79         if (nvkm_rd32(device, 0x6100ac) & 0x00000100) {
  80                 nvkm_wr32(device, 0x6100ac, 0x00000100);
  81                 nvkm_mask(device, 0x6194e8, 0x00000001, 0x00000000);
  82                 if (nvkm_msec(device, 2000,
  83                         if (!(nvkm_rd32(device, 0x6194e8) & 0x00000002))
  84                                 break;
  85                 ) < 0)
  86                         return -EBUSY;
  87         }
  88
  89         /* point at display engine memory area (hash table, objects) */
  90         nvkm_wr32(device, 0x610010, (root->instmem->addr >> 8) | 9);
  91
  92         /* enable supervisor interrupts, disable everything else */
  93         nvkm_wr32(device, 0x610090, 0x00000000);
  94         nvkm_wr32(device, 0x6100a0, 0x00000000);
  95         nvkm_wr32(device, 0x6100b0, 0x00000307);
  96
  97         /* disable underflow reporting, preventing an intermittent issue
  98          * on some gk104 boards where the production vbios left this
  99          * setting enabled by default.
 100          *
 101          * ftp://download.nvidia.com/open-gpu-doc/gk104-disable-underflow-reporting/1/gk104-disable-underflow-reporting.txt
 102          */
 103         list_for_each_entry(head, &disp->base.head, head) {
 104                 const u32 hoff = head->id * 0x800;
 105                 nvkm_mask(device, 0x616308 + hoff, 0x00000111, 0x00000010);
 106         }
 107
 108         return 0;
 109 }
 110
 111 static const struct nv50_disp_root_func
 112 gf119_disp_root = {
 113         .init = gf119_disp_root_init,
 114         .fini = gf119_disp_root_fini,
 115         .dmac = {
 116                 &gf119_disp_core_oclass,
 117                 &gf119_disp_base_oclass,
 118                 &gf119_disp_ovly_oclass,
 119         },
 120         .pioc = {
 121                 &gf119_disp_oimm_oclass,
 122                 &gf119_disp_curs_oclass,
 123         },
 124 };
 125
 126 static int
 127 gf119_disp_root_new(struct nvkm_disp *disp, const struct nvkm_oclass *oclass,
 128                     void *data, u32 size, struct nvkm_object **pobject)
 129 {
 130         return nv50_disp_root_new_(&gf119_disp_root, disp, oclass,
 131                                    data, size, pobject);
 132 }
 133
 134 const struct nvkm_disp_oclass
 135 gf119_disp_root_oclass = {
 136         .base.oclass = GF110_DISP,
 137         .base.minver = -1,
 138         .base.maxver = -1,
 139         .ctor = gf119_disp_root_new,
 140 };