drivers/gpu/drm/nouveau/nvkm/engine/disp/gf119.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 "nv50.h"
  25 #include "head.h"
  26 #include "ior.h"
  27 #include "channv50.h"
  28 #include "rootnv50.h"
  29
  30 #include <core/ramht.h>
  31 #include <subdev/timer.h>
  32
  33 void
  34 gf119_disp_super(struct work_struct *work)
  35 {
  36         struct nv50_disp *disp =
  37                 container_of(work, struct nv50_disp, supervisor);
  38         struct nvkm_subdev *subdev = &disp->base.engine.subdev;
  39         struct nvkm_device *device = subdev->device;
  40         struct nvkm_head *head;
  41         u32 mask[4];
  42
  43         nvkm_debug(subdev, "supervisor %d\n", ffs(disp->super));
  44         list_for_each_entry(head, &disp->base.head, head) {
  45                 mask[head->id] = nvkm_rd32(device, 0x6101d4 + (head->id * 0x800));
  46                 HEAD_DBG(head, "%08x", mask[head->id]);
  47         }
  48
  49         if (disp->super & 0x00000001) {
  50                 nv50_disp_chan_mthd(disp->chan[0], NV_DBG_DEBUG);
  51                 nv50_disp_super_1(disp);
  52                 list_for_each_entry(head, &disp->base.head, head) {
  53                         if (!(mask[head->id] & 0x00001000))
  54                                 continue;
  55                         nv50_disp_super_1_0(disp, head);
  56                 }
  57         } else
  58         if (disp->super & 0x00000002) {
  59                 list_for_each_entry(head, &disp->base.head, head) {
  60                         if (!(mask[head->id] & 0x00001000))
  61                                 continue;
  62                         nv50_disp_super_2_0(disp, head);
  63                 }
  64                 nvkm_outp_route(&disp->base);
  65                 list_for_each_entry(head, &disp->base.head, head) {
  66                         if (!(mask[head->id] & 0x00010000))
  67                                 continue;
  68                         nv50_disp_super_2_1(disp, head);
  69                 }
  70                 list_for_each_entry(head, &disp->base.head, head) {
  71                         if (!(mask[head->id] & 0x00001000))
  72                                 continue;
  73                         nv50_disp_super_2_2(disp, head);
  74                 }
  75         } else
  76         if (disp->super & 0x00000004) {
  77                 list_for_each_entry(head, &disp->base.head, head) {
  78                         if (!(mask[head->id] & 0x00001000))
  79                                 continue;
  80                         nv50_disp_super_3_0(disp, head);
  81                 }
  82         }
  83
  84         list_for_each_entry(head, &disp->base.head, head)
  85                 nvkm_wr32(device, 0x6101d4 + (head->id * 0x800), 0x00000000);
  86         nvkm_wr32(device, 0x6101d0, 0x80000000);
  87 }
  88
  89 void
  90 gf119_disp_intr_error(struct nv50_disp *disp, int chid)
  91 {
  92         struct nvkm_subdev *subdev = &disp->base.engine.subdev;
  93         struct nvkm_device *device = subdev->device;
  94         u32 stat = nvkm_rd32(device, 0x6101f0 + (chid * 12));
  95         u32 type = (stat & 0x00007000) >> 12;
  96         u32 mthd = (stat & 0x00000ffc);
  97         u32 data = nvkm_rd32(device, 0x6101f4 + (chid * 12));
  98         u32 code = nvkm_rd32(device, 0x6101f8 + (chid * 12));
  99         const struct nvkm_enum *reason =
 100                 nvkm_enum_find(nv50_disp_intr_error_type, type);
 101
 102         nvkm_error(subdev, "chid %d stat %08x reason %d [%s] mthd %04x "
 103                            "data %08x code %08x\n",
 104                    chid, stat, type, reason ? reason->name : "",
 105                    mthd, data, code);
 106
 107         if (chid < ARRAY_SIZE(disp->chan)) {
 108                 switch (mthd) {
 109                 case 0x0080:
 110                         nv50_disp_chan_mthd(disp->chan[chid], NV_DBG_ERROR);
 111                         break;
 112                 default:
 113                         break;
 114                 }
 115         }
 116
 117         nvkm_wr32(device, 0x61009c, (1 << chid));
 118         nvkm_wr32(device, 0x6101f0 + (chid * 12), 0x90000000);
 119 }
 120
 121 void
 122 gf119_disp_intr(struct nv50_disp *disp)
 123 {
 124         struct nvkm_subdev *subdev = &disp->base.engine.subdev;
 125         struct nvkm_device *device = subdev->device;
 126         struct nvkm_head *head;
 127         u32 intr = nvkm_rd32(device, 0x610088);
 128
 129         if (intr & 0x00000001) {
 130                 u32 stat = nvkm_rd32(device, 0x61008c);
 131                 while (stat) {
 132                         int chid = __ffs(stat); stat &= ~(1 << chid);
 133                         nv50_disp_chan_uevent_send(disp, chid);
 134                         nvkm_wr32(device, 0x61008c, 1 << chid);
 135                 }
 136                 intr &= ~0x00000001;
 137         }
 138
 139         if (intr & 0x00000002) {
 140                 u32 stat = nvkm_rd32(device, 0x61009c);
 141                 int chid = ffs(stat) - 1;
 142                 if (chid >= 0)
 143                         disp->func->intr_error(disp, chid);
 144                 intr &= ~0x00000002;
 145         }
 146
 147         if (intr & 0x00100000) {
 148                 u32 stat = nvkm_rd32(device, 0x6100ac);
 149                 if (stat & 0x00000007) {
 150                         disp->super = (stat & 0x00000007);
 151                         queue_work(disp->wq, &disp->supervisor);
 152                         nvkm_wr32(device, 0x6100ac, disp->super);
 153                         stat &= ~0x00000007;
 154                 }
 155
 156                 if (stat) {
 157                         nvkm_warn(subdev, "intr24 %08x\n", stat);
 158                         nvkm_wr32(device, 0x6100ac, stat);
 159                 }
 160
 161                 intr &= ~0x00100000;
 162         }
 163
 164         list_for_each_entry(head, &disp->base.head, head) {
 165                 const u32 hoff = head->id * 0x800;
 166                 u32 mask = 0x01000000 << head->id;
 167                 if (mask & intr) {
 168                         u32 stat = nvkm_rd32(device, 0x6100bc + hoff);
 169                         if (stat & 0x00000001)
 170                                 nvkm_disp_vblank(&disp->base, head->id);
 171                         nvkm_mask(device, 0x6100bc + hoff, 0, 0);
 172                         nvkm_rd32(device, 0x6100c0 + hoff);
 173                 }
 174         }
 175 }
 176
 177 void
 178 gf119_disp_fini(struct nv50_disp *disp)
 179 {
 180         struct nvkm_device *device = disp->base.engine.subdev.device;
 181         /* disable all interrupts */
 182         nvkm_wr32(device, 0x6100b0, 0x00000000);
 183 }
 184
 185 int
 186 gf119_disp_init(struct nv50_disp *disp)
 187 {
 188         struct nvkm_device *device = disp->base.engine.subdev.device;
 189         struct nvkm_head *head;
 190         u32 tmp;
 191         int i;
 192
 193         /* The below segments of code copying values from one register to
 194          * another appear to inform EVO of the display capabilities or
 195          * something similar.
 196          */
 197
 198         /* ... CRTC caps */
 199         list_for_each_entry(head, &disp->base.head, head) {
 200                 const u32 hoff = head->id * 0x800;
 201                 tmp = nvkm_rd32(device, 0x616104 + hoff);
 202                 nvkm_wr32(device, 0x6101b4 + hoff, tmp);
 203                 tmp = nvkm_rd32(device, 0x616108 + hoff);
 204                 nvkm_wr32(device, 0x6101b8 + hoff, tmp);
 205                 tmp = nvkm_rd32(device, 0x61610c + hoff);
 206                 nvkm_wr32(device, 0x6101bc + hoff, tmp);
 207         }
 208
 209         /* ... DAC caps */
 210         for (i = 0; i < disp->dac.nr; i++) {
 211                 tmp = nvkm_rd32(device, 0x61a000 + (i * 0x800));
 212                 nvkm_wr32(device, 0x6101c0 + (i * 0x800), tmp);
 213         }
 214
 215         /* ... SOR caps */
 216         for (i = 0; i < disp->sor.nr; i++) {
 217                 tmp = nvkm_rd32(device, 0x61c000 + (i * 0x800));
 218                 nvkm_wr32(device, 0x6301c4 + (i * 0x800), tmp);
 219         }
 220
 221         /* steal display away from vbios, or something like that */
 222         if (nvkm_rd32(device, 0x6100ac) & 0x00000100) {
 223                 nvkm_wr32(device, 0x6100ac, 0x00000100);
 224                 nvkm_mask(device, 0x6194e8, 0x00000001, 0x00000000);
 225                 if (nvkm_msec(device, 2000,
 226                         if (!(nvkm_rd32(device, 0x6194e8) & 0x00000002))
 227                                 break;
 228                 ) < 0)
 229                         return -EBUSY;
 230         }
 231
 232         /* point at display engine memory area (hash table, objects) */
 233         nvkm_wr32(device, 0x610010, (disp->inst->addr >> 8) | 9);
 234
 235         /* enable supervisor interrupts, disable everything else */
 236         nvkm_wr32(device, 0x610090, 0x00000000);
 237         nvkm_wr32(device, 0x6100a0, 0x00000000);
 238         nvkm_wr32(device, 0x6100b0, 0x00000307);
 239
 240         /* disable underflow reporting, preventing an intermittent issue
 241          * on some gk104 boards where the production vbios left this
 242          * setting enabled by default.
 243          *
 244          * ftp://download.nvidia.com/open-gpu-doc/gk104-disable-underflow-reporting/1/gk104-disable-underflow-reporting.txt
 245          */
 246         list_for_each_entry(head, &disp->base.head, head) {
 247                 const u32 hoff = head->id * 0x800;
 248                 nvkm_mask(device, 0x616308 + hoff, 0x00000111, 0x00000010);
 249         }
 250
 251         return 0;
 252 }
 253
 254 static const struct nv50_disp_func
 255 gf119_disp = {
 256         .init = gf119_disp_init,
 257         .fini = gf119_disp_fini,
 258         .intr = gf119_disp_intr,
 259         .intr_error = gf119_disp_intr_error,
 260         .uevent = &gf119_disp_chan_uevent,
 261         .super = gf119_disp_super,
 262         .root = &gf119_disp_root_oclass,
 263         .head = { .cnt = gf119_head_cnt, .new = gf119_head_new },
 264         .dac = { .cnt = gf119_dac_cnt, .new = gf119_dac_new },
 265         .sor = { .cnt = gf119_sor_cnt, .new = gf119_sor_new },
 266 };
 267
 268 int
 269 gf119_disp_new(struct nvkm_device *device, int index, struct nvkm_disp **pdisp)
 270 {
 271         return nv50_disp_new_(&gf119_disp, device, index, pdisp);
 272 }