drivers/gpu/drm/nouveau/core/subdev/fb/nv50.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
  25 #include <core/client.h>
  26 #include <core/enum.h>
  27 #include <core/engctx.h>
  28 #include <core/object.h>
  29
  30 #include <subdev/bios.h>
  31
  32 #include "nv50.h"
  33
  34 int
  35 nv50_fb_memtype[0x80] = {
  36         1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  37         1, 1, 1, 1, 0, 0, 0, 0, 2, 2, 2, 2, 0, 0, 0, 0,
  38         1, 1, 1, 1, 1, 1, 1, 0, 2, 2, 2, 2, 2, 2, 2, 0,
  39         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  40         1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 0, 0,
  41         0, 0, 0, 0, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0,
  42         1, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 2, 2, 2, 2,
  43         1, 0, 2, 0, 1, 0, 2, 0, 1, 1, 2, 2, 1, 1, 0, 0
  44 };
  45
  46 bool
  47 nv50_fb_memtype_valid(struct nouveau_fb *pfb, u32 memtype)
  48 {
  49         return nv50_fb_memtype[(memtype & 0xff00) >> 8] != 0;
  50 }
  51
  52 static const struct nouveau_enum vm_dispatch_subclients[] = {
  53         { 0x00000000, "GRCTX", NULL },
  54         { 0x00000001, "NOTIFY", NULL },
  55         { 0x00000002, "QUERY", NULL },
  56         { 0x00000003, "COND", NULL },
  57         { 0x00000004, "M2M_IN", NULL },
  58         { 0x00000005, "M2M_OUT", NULL },
  59         { 0x00000006, "M2M_NOTIFY", NULL },
  60         {}
  61 };
  62
  63 static const struct nouveau_enum vm_ccache_subclients[] = {
  64         { 0x00000000, "CB", NULL },
  65         { 0x00000001, "TIC", NULL },
  66         { 0x00000002, "TSC", NULL },
  67         {}
  68 };
  69
  70 static const struct nouveau_enum vm_prop_subclients[] = {
  71         { 0x00000000, "RT0", NULL },
  72         { 0x00000001, "RT1", NULL },
  73         { 0x00000002, "RT2", NULL },
  74         { 0x00000003, "RT3", NULL },
  75         { 0x00000004, "RT4", NULL },
  76         { 0x00000005, "RT5", NULL },
  77         { 0x00000006, "RT6", NULL },
  78         { 0x00000007, "RT7", NULL },
  79         { 0x00000008, "ZETA", NULL },
  80         { 0x00000009, "LOCAL", NULL },
  81         { 0x0000000a, "GLOBAL", NULL },
  82         { 0x0000000b, "STACK", NULL },
  83         { 0x0000000c, "DST2D", NULL },
  84         {}
  85 };
  86
  87 static const struct nouveau_enum vm_pfifo_subclients[] = {
  88         { 0x00000000, "PUSHBUF", NULL },
  89         { 0x00000001, "SEMAPHORE", NULL },
  90         {}
  91 };
  92
  93 static const struct nouveau_enum vm_bar_subclients[] = {
  94         { 0x00000000, "FB", NULL },
  95         { 0x00000001, "IN", NULL },
  96         {}
  97 };
  98
  99 static const struct nouveau_enum vm_client[] = {
 100         { 0x00000000, "STRMOUT", NULL },
 101         { 0x00000003, "DISPATCH", vm_dispatch_subclients },
 102         { 0x00000004, "PFIFO_WRITE", NULL },
 103         { 0x00000005, "CCACHE", vm_ccache_subclients },
 104         { 0x00000006, "PPPP", NULL },
 105         { 0x00000007, "CLIPID", NULL },
 106         { 0x00000008, "PFIFO_READ", NULL },
 107         { 0x00000009, "VFETCH", NULL },
 108         { 0x0000000a, "TEXTURE", NULL },
 109         { 0x0000000b, "PROP", vm_prop_subclients },
 110         { 0x0000000c, "PVP", NULL },
 111         { 0x0000000d, "PBSP", NULL },
 112         { 0x0000000e, "PCRYPT", NULL },
 113         { 0x0000000f, "PCOUNTER", NULL },
 114         { 0x00000011, "PDAEMON", NULL },
 115         {}
 116 };
 117
 118 static const struct nouveau_enum vm_engine[] = {
 119         { 0x00000000, "PGRAPH", NULL, NVDEV_ENGINE_GR },
 120         { 0x00000001, "PVP", NULL, NVDEV_ENGINE_VP },
 121         { 0x00000004, "PEEPHOLE", NULL },
 122         { 0x00000005, "PFIFO", vm_pfifo_subclients, NVDEV_ENGINE_FIFO },
 123         { 0x00000006, "BAR", vm_bar_subclients },
 124         { 0x00000008, "PPPP", NULL, NVDEV_ENGINE_PPP },
 125         { 0x00000008, "PMPEG", NULL, NVDEV_ENGINE_MPEG },
 126         { 0x00000009, "PBSP", NULL, NVDEV_ENGINE_BSP },
 127         { 0x0000000a, "PCRYPT", NULL, NVDEV_ENGINE_CRYPT },
 128         { 0x0000000b, "PCOUNTER", NULL },
 129         { 0x0000000c, "SEMAPHORE_BG", NULL },
 130         { 0x0000000d, "PCOPY", NULL, NVDEV_ENGINE_COPY0 },
 131         { 0x0000000e, "PDAEMON", NULL },
 132         {}
 133 };
 134
 135 static const struct nouveau_enum vm_fault[] = {
 136         { 0x00000000, "PT_NOT_PRESENT", NULL },
 137         { 0x00000001, "PT_TOO_SHORT", NULL },
 138         { 0x00000002, "PAGE_NOT_PRESENT", NULL },
 139         { 0x00000003, "PAGE_SYSTEM_ONLY", NULL },
 140         { 0x00000004, "PAGE_READ_ONLY", NULL },
 141         { 0x00000006, "NULL_DMAOBJ", NULL },
 142         { 0x00000007, "WRONG_MEMTYPE", NULL },
 143         { 0x0000000b, "VRAM_LIMIT", NULL },
 144         { 0x0000000f, "DMAOBJ_LIMIT", NULL },
 145         {}
 146 };
 147
 148 static void
 149 nv50_fb_intr(struct nouveau_subdev *subdev)
 150 {
 151         struct nouveau_device *device = nv_device(subdev);
 152         struct nouveau_engine *engine;
 153         struct nv50_fb_priv *priv = (void *)subdev;
 154         const struct nouveau_enum *en, *cl;
 155         struct nouveau_object *engctx = NULL;
 156         u32 trap[6], idx, chan;
 157         u8 st0, st1, st2, st3;
 158         int i;
 159
 160         idx = nv_rd32(priv, 0x100c90);
 161         if (!(idx & 0x80000000))
 162                 return;
 163         idx &= 0x00ffffff;
 164
 165         for (i = 0; i < 6; i++) {
 166                 nv_wr32(priv, 0x100c90, idx | i << 24);
 167                 trap[i] = nv_rd32(priv, 0x100c94);
 168         }
 169         nv_wr32(priv, 0x100c90, idx | 0x80000000);
 170
 171         /* decode status bits into something more useful */
 172         if (device->chipset  < 0xa3 ||
 173             device->chipset == 0xaa || device->chipset == 0xac) {
 174                 st0 = (trap[0] & 0x0000000f) >> 0;
 175                 st1 = (trap[0] & 0x000000f0) >> 4;
 176                 st2 = (trap[0] & 0x00000f00) >> 8;
 177                 st3 = (trap[0] & 0x0000f000) >> 12;
 178         } else {
 179                 st0 = (trap[0] & 0x000000ff) >> 0;
 180                 st1 = (trap[0] & 0x0000ff00) >> 8;
 181                 st2 = (trap[0] & 0x00ff0000) >> 16;
 182                 st3 = (trap[0] & 0xff000000) >> 24;
 183         }
 184         chan = (trap[2] << 16) | trap[1];
 185
 186         en = nouveau_enum_find(vm_engine, st0);
 187
 188         if (en && en->data2) {
 189                 const struct nouveau_enum *orig_en = en;
 190                 while (en->name && en->value == st0 && en->data2) {
 191                         engine = nouveau_engine(subdev, en->data2);
 192                         if (engine) {
 193                                 engctx = nouveau_engctx_get(engine, chan);
 194                                 if (engctx)
 195                                         break;
 196                         }
 197                         en++;
 198                 }
 199                 if (!engctx)
 200                         en = orig_en;
 201         }
 202
 203         nv_error(priv, "trapped %s at 0x%02x%04x%04x on channel 0x%08x [%s] ",
 204                  (trap[5] & 0x00000100) ? "read" : "write",
 205                  trap[5] & 0xff, trap[4] & 0xffff, trap[3] & 0xffff, chan,
 206                  nouveau_client_name(engctx));
 207
 208         nouveau_engctx_put(engctx);
 209
 210         if (en)
 211                 pr_cont("%s/", en->name);
 212         else
 213                 pr_cont("%02x/", st0);
 214
 215         cl = nouveau_enum_find(vm_client, st2);
 216         if (cl)
 217                 pr_cont("%s/", cl->name);
 218         else
 219                 pr_cont("%02x/", st2);
 220
 221         if      (cl && cl->data) cl = nouveau_enum_find(cl->data, st3);
 222         else if (en && en->data) cl = nouveau_enum_find(en->data, st3);
 223         else                     cl = NULL;
 224         if (cl)
 225                 pr_cont("%s", cl->name);
 226         else
 227                 pr_cont("%02x", st3);
 228
 229         pr_cont(" reason: ");
 230         en = nouveau_enum_find(vm_fault, st1);
 231         if (en)
 232                 pr_cont("%s\n", en->name);
 233         else
 234                 pr_cont("0x%08x\n", st1);
 235 }
 236
 237 int
 238 nv50_fb_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
 239              struct nouveau_oclass *oclass, void *data, u32 size,
 240              struct nouveau_object **pobject)
 241 {
 242         struct nouveau_device *device = nv_device(parent);
 243         struct nv50_fb_priv *priv;
 244         int ret;
 245
 246         ret = nouveau_fb_create(parent, engine, oclass, &priv);
 247         *pobject = nv_object(priv);
 248         if (ret)
 249                 return ret;
 250
 251         priv->r100c08_page = alloc_page(GFP_KERNEL | __GFP_ZERO);
 252         if (priv->r100c08_page) {
 253                 priv->r100c08 = nv_device_map_page(device, priv->r100c08_page);
 254                 if (!priv->r100c08)
 255                         nv_warn(priv, "failed 0x100c08 page map\n");
 256         } else {
 257                 nv_warn(priv, "failed 0x100c08 page alloc\n");
 258         }
 259
 260         nv_subdev(priv)->intr = nv50_fb_intr;
 261         return 0;
 262 }
 263
 264 void
 265 nv50_fb_dtor(struct nouveau_object *object)
 266 {
 267         struct nouveau_device *device = nv_device(object);
 268         struct nv50_fb_priv *priv = (void *)object;
 269
 270         if (priv->r100c08_page) {
 271                 nv_device_unmap_page(device, priv->r100c08);
 272                 __free_page(priv->r100c08_page);
 273         }
 274
 275         nouveau_fb_destroy(&priv->base);
 276 }
 277
 278 int
 279 nv50_fb_init(struct nouveau_object *object)
 280 {
 281         struct nv50_fb_impl *impl = (void *)object->oclass;
 282         struct nv50_fb_priv *priv = (void *)object;
 283         int ret;
 284
 285         ret = nouveau_fb_init(&priv->base);
 286         if (ret)
 287                 return ret;
 288
 289         /* Not a clue what this is exactly.  Without pointing it at a
 290          * scratch page, VRAM->GART blits with M2MF (as in DDX DFS)
 291          * cause IOMMU "read from address 0" errors (rh#561267)
 292          */
 293         nv_wr32(priv, 0x100c08, priv->r100c08 >> 8);
 294
 295         /* This is needed to get meaningful information from 100c90
 296          * on traps. No idea what these values mean exactly. */
 297         nv_wr32(priv, 0x100c90, impl->trap);
 298         return 0;
 299 }
 300
 301 struct nouveau_oclass *
 302 nv50_fb_oclass = &(struct nv50_fb_impl) {
 303         .base.base.handle = NV_SUBDEV(FB, 0x50),
 304         .base.base.ofuncs = &(struct nouveau_ofuncs) {
 305                 .ctor = nv50_fb_ctor,
 306                 .dtor = nv50_fb_dtor,
 307                 .init = nv50_fb_init,
 308                 .fini = _nouveau_fb_fini,
 309         },
 310         .base.memtype = nv50_fb_memtype_valid,
 311         .base.ram = &nv50_ram_oclass,
 312         .trap = 0x000707ff,
 313 }.base.base;