drivers/gpu/drm/nouveau/nvkm/engine/falcon.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 #include <engine/falcon.h>
  23
  24 #include <subdev/timer.h>
  25
  26 void
  27 nvkm_falcon_intr(struct nvkm_subdev *subdev)
  28 {
  29         struct nvkm_falcon *falcon = (void *)subdev;
  30         struct nvkm_device *device = falcon->engine.subdev.device;
  31         const u32 base = falcon->addr;
  32         u32 dispatch = nvkm_rd32(device, base + 0x01c);
  33         u32 intr = nvkm_rd32(device, base + 0x008) & dispatch & ~(dispatch >> 16);
  34
  35         if (intr & 0x00000010) {
  36                 nvkm_debug(subdev, "ucode halted\n");
  37                 nvkm_wr32(device, base + 0x004, 0x00000010);
  38                 intr &= ~0x00000010;
  39         }
  40
  41         if (intr)  {
  42                 nvkm_error(subdev, "intr %08x\n", intr);
  43                 nvkm_wr32(device, base + 0x004, intr);
  44         }
  45 }
  46
  47 static void *
  48 vmemdup(const void *src, size_t len)
  49 {
  50         void *p = vmalloc(len);
  51
  52         if (p)
  53                 memcpy(p, src, len);
  54         return p;
  55 }
  56
  57 int
  58 _nvkm_falcon_init(struct nvkm_object *object)
  59 {
  60         struct nvkm_falcon *falcon = (void *)object;
  61         struct nvkm_subdev *subdev = &falcon->engine.subdev;
  62         struct nvkm_device *device = subdev->device;
  63         const struct firmware *fw;
  64         char name[32] = "internal";
  65         const u32 base = falcon->addr;
  66         int ret, i;
  67         u32 caps;
  68
  69         /* enable engine, and determine its capabilities */
  70         ret = nvkm_engine_init(&falcon->engine);
  71         if (ret)
  72                 return ret;
  73
  74         if (device->chipset <  0xa3 ||
  75             device->chipset == 0xaa || device->chipset == 0xac) {
  76                 falcon->version = 0;
  77                 falcon->secret  = (falcon->addr == 0x087000) ? 1 : 0;
  78         } else {
  79                 caps = nvkm_rd32(device, base + 0x12c);
  80                 falcon->version = (caps & 0x0000000f);
  81                 falcon->secret  = (caps & 0x00000030) >> 4;
  82         }
  83
  84         caps = nvkm_rd32(device, base + 0x108);
  85         falcon->code.limit = (caps & 0x000001ff) << 8;
  86         falcon->data.limit = (caps & 0x0003fe00) >> 1;
  87
  88         nvkm_debug(subdev, "falcon version: %d\n", falcon->version);
  89         nvkm_debug(subdev, "secret level: %d\n", falcon->secret);
  90         nvkm_debug(subdev, "code limit: %d\n", falcon->code.limit);
  91         nvkm_debug(subdev, "data limit: %d\n", falcon->data.limit);
  92
  93         /* wait for 'uc halted' to be signalled before continuing */
  94         if (falcon->secret && falcon->version < 4) {
  95                 if (!falcon->version) {
  96                         nvkm_msec(device, 2000,
  97                                 if (nvkm_rd32(device, base + 0x008) & 0x00000010)
  98                                         break;
  99                         );
 100                 } else {
 101                         nvkm_msec(device, 2000,
 102                                 if (!(nvkm_rd32(device, base + 0x180) & 0x80000000))
 103                                         break;
 104                         );
 105                 }
 106                 nvkm_wr32(device, base + 0x004, 0x00000010);
 107         }
 108
 109         /* disable all interrupts */
 110         nvkm_wr32(device, base + 0x014, 0xffffffff);
 111
 112         /* no default ucode provided by the engine implementation, try and
 113          * locate a "self-bootstrapping" firmware image for the engine
 114          */
 115         if (!falcon->code.data) {
 116                 snprintf(name, sizeof(name), "nouveau/nv%02x_fuc%03x",
 117                          device->chipset, falcon->addr >> 12);
 118
 119                 ret = request_firmware(&fw, name, nv_device_base(device));
 120                 if (ret == 0) {
 121                         falcon->code.data = vmemdup(fw->data, fw->size);
 122                         falcon->code.size = fw->size;
 123                         falcon->data.data = NULL;
 124                         falcon->data.size = 0;
 125                         release_firmware(fw);
 126                 }
 127
 128                 falcon->external = true;
 129         }
 130
 131         /* next step is to try and load "static code/data segment" firmware
 132          * images for the engine
 133          */
 134         if (!falcon->code.data) {
 135                 snprintf(name, sizeof(name), "nouveau/nv%02x_fuc%03xd",
 136                          device->chipset, falcon->addr >> 12);
 137
 138                 ret = request_firmware(&fw, name, nv_device_base(device));
 139                 if (ret) {
 140                         nvkm_error(subdev, "unable to load firmware data\n");
 141                         return ret;
 142                 }
 143
 144                 falcon->data.data = vmemdup(fw->data, fw->size);
 145                 falcon->data.size = fw->size;
 146                 release_firmware(fw);
 147                 if (!falcon->data.data)
 148                         return -ENOMEM;
 149
 150                 snprintf(name, sizeof(name), "nouveau/nv%02x_fuc%03xc",
 151                          device->chipset, falcon->addr >> 12);
 152
 153                 ret = request_firmware(&fw, name, nv_device_base(device));
 154                 if (ret) {
 155                         nvkm_error(subdev, "unable to load firmware code\n");
 156                         return ret;
 157                 }
 158
 159                 falcon->code.data = vmemdup(fw->data, fw->size);
 160                 falcon->code.size = fw->size;
 161                 release_firmware(fw);
 162                 if (!falcon->code.data)
 163                         return -ENOMEM;
 164         }
 165
 166         nvkm_debug(subdev, "firmware: %s (%s)\n", name, falcon->data.data ?
 167                    "static code/data segments" : "self-bootstrapping");
 168
 169         /* ensure any "self-bootstrapping" firmware image is in vram */
 170         if (!falcon->data.data && !falcon->core) {
 171                 ret = nvkm_gpuobj_new(object->parent, NULL, falcon->code.size,
 172                                       256, 0, &falcon->core);
 173                 if (ret) {
 174                         nvkm_error(subdev, "core allocation failed, %d\n", ret);
 175                         return ret;
 176                 }
 177
 178                 for (i = 0; i < falcon->code.size; i += 4)
 179                         nv_wo32(falcon->core, i, falcon->code.data[i / 4]);
 180         }
 181
 182         /* upload firmware bootloader (or the full code segments) */
 183         if (falcon->core) {
 184                 if (device->card_type < NV_C0)
 185                         nvkm_wr32(device, base + 0x618, 0x04000000);
 186                 else
 187                         nvkm_wr32(device, base + 0x618, 0x00000114);
 188                 nvkm_wr32(device, base + 0x11c, 0);
 189                 nvkm_wr32(device, base + 0x110, falcon->core->addr >> 8);
 190                 nvkm_wr32(device, base + 0x114, 0);
 191                 nvkm_wr32(device, base + 0x118, 0x00006610);
 192         } else {
 193                 if (falcon->code.size > falcon->code.limit ||
 194                     falcon->data.size > falcon->data.limit) {
 195                         nvkm_error(subdev, "ucode exceeds falcon limit(s)\n");
 196                         return -EINVAL;
 197                 }
 198
 199                 if (falcon->version < 3) {
 200                         nvkm_wr32(device, base + 0xff8, 0x00100000);
 201                         for (i = 0; i < falcon->code.size / 4; i++)
 202                                 nvkm_wr32(device, base + 0xff4, falcon->code.data[i]);
 203                 } else {
 204                         nvkm_wr32(device, base + 0x180, 0x01000000);
 205                         for (i = 0; i < falcon->code.size / 4; i++) {
 206                                 if ((i & 0x3f) == 0)
 207                                         nvkm_wr32(device, base + 0x188, i >> 6);
 208                                 nvkm_wr32(device, base + 0x184, falcon->code.data[i]);
 209                         }
 210                 }
 211         }
 212
 213         /* upload data segment (if necessary), zeroing the remainder */
 214         if (falcon->version < 3) {
 215                 nvkm_wr32(device, base + 0xff8, 0x00000000);
 216                 for (i = 0; !falcon->core && i < falcon->data.size / 4; i++)
 217                         nvkm_wr32(device, base + 0xff4, falcon->data.data[i]);
 218                 for (; i < falcon->data.limit; i += 4)
 219                         nvkm_wr32(device, base + 0xff4, 0x00000000);
 220         } else {
 221                 nvkm_wr32(device, base + 0x1c0, 0x01000000);
 222                 for (i = 0; !falcon->core && i < falcon->data.size / 4; i++)
 223                         nvkm_wr32(device, base + 0x1c4, falcon->data.data[i]);
 224                 for (; i < falcon->data.limit / 4; i++)
 225                         nvkm_wr32(device, base + 0x1c4, 0x00000000);
 226         }
 227
 228         /* start it running */
 229         nvkm_wr32(device, base + 0x10c, 0x00000001); /* BLOCK_ON_FIFO */
 230         nvkm_wr32(device, base + 0x104, 0x00000000); /* ENTRY */
 231         nvkm_wr32(device, base + 0x100, 0x00000002); /* TRIGGER */
 232         nvkm_wr32(device, base + 0x048, 0x00000003); /* FIFO | CHSW */
 233         return 0;
 234 }
 235
 236 int
 237 _nvkm_falcon_fini(struct nvkm_object *object, bool suspend)
 238 {
 239         struct nvkm_falcon *falcon = (void *)object;
 240         struct nvkm_device *device = falcon->engine.subdev.device;
 241         const u32 base = falcon->addr;
 242
 243         if (!suspend) {
 244                 nvkm_gpuobj_ref(NULL, &falcon->core);
 245                 if (falcon->external) {
 246                         vfree(falcon->data.data);
 247                         vfree(falcon->code.data);
 248                         falcon->code.data = NULL;
 249                 }
 250         }
 251
 252         nvkm_mask(device, base + 0x048, 0x00000003, 0x00000000);
 253         nvkm_wr32(device, base + 0x014, 0xffffffff);
 254
 255         return nvkm_engine_fini(&falcon->engine, suspend);
 256 }
 257
 258 int
 259 nvkm_falcon_create_(struct nvkm_object *parent, struct nvkm_object *engine,
 260                     struct nvkm_oclass *oclass, u32 addr, bool enable,
 261                     const char *iname, const char *fname,
 262                     int length, void **pobject)
 263 {
 264         struct nvkm_falcon *falcon;
 265         int ret;
 266
 267         ret = nvkm_engine_create_(parent, engine, oclass, enable, iname,
 268                                   fname, length, pobject);
 269         falcon = *pobject;
 270         if (ret)
 271                 return ret;
 272
 273         falcon->addr = addr;
 274         return 0;
 275 }