drivers/gpu/drm/nouveau/core/engine/crypt/nv98.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/os.h>
  27 #include <core/enum.h>
  28 #include <core/engctx.h>
  29
  30 #include <subdev/timer.h>
  31 #include <subdev/fb.h>
  32
  33 #include <engine/falcon.h>
  34 #include <engine/fifo.h>
  35 #include <engine/crypt.h>
  36
  37 #include "fuc/nv98.fuc.h"
  38
  39 struct nv98_crypt_priv {
  40         struct nouveau_falcon base;
  41 };
  42
  43 /*******************************************************************************
  44  * Crypt object classes
  45  ******************************************************************************/
  46
  47 static struct nouveau_oclass
  48 nv98_crypt_sclass[] = {
  49         { 0x88b4, &nouveau_object_ofuncs },
  50         {},
  51 };
  52
  53 /*******************************************************************************
  54  * PCRYPT context
  55  ******************************************************************************/
  56
  57 static struct nouveau_oclass
  58 nv98_crypt_cclass = {
  59         .handle = NV_ENGCTX(CRYPT, 0x98),
  60         .ofuncs = &(struct nouveau_ofuncs) {
  61                 .ctor = _nouveau_falcon_context_ctor,
  62                 .dtor = _nouveau_falcon_context_dtor,
  63                 .init = _nouveau_falcon_context_init,
  64                 .fini = _nouveau_falcon_context_fini,
  65                 .rd32 = _nouveau_falcon_context_rd32,
  66                 .wr32 = _nouveau_falcon_context_wr32,
  67         },
  68 };
  69
  70 /*******************************************************************************
  71  * PCRYPT engine/subdev functions
  72  ******************************************************************************/
  73
  74 static const struct nouveau_enum nv98_crypt_isr_error_name[] = {
  75         { 0x0000, "ILLEGAL_MTHD" },
  76         { 0x0001, "INVALID_BITFIELD" },
  77         { 0x0002, "INVALID_ENUM" },
  78         { 0x0003, "QUERY" },
  79         {}
  80 };
  81
  82 static void
  83 nv98_crypt_intr(struct nouveau_subdev *subdev)
  84 {
  85         struct nouveau_fifo *pfifo = nouveau_fifo(subdev);
  86         struct nouveau_engine *engine = nv_engine(subdev);
  87         struct nouveau_object *engctx;
  88         struct nv98_crypt_priv *priv = (void *)subdev;
  89         u32 disp = nv_rd32(priv, 0x08701c);
  90         u32 stat = nv_rd32(priv, 0x087008) & disp & ~(disp >> 16);
  91         u32 inst = nv_rd32(priv, 0x087050) & 0x3fffffff;
  92         u32 ssta = nv_rd32(priv, 0x087040) & 0x0000ffff;
  93         u32 addr = nv_rd32(priv, 0x087040) >> 16;
  94         u32 mthd = (addr & 0x07ff) << 2;
  95         u32 subc = (addr & 0x3800) >> 11;
  96         u32 data = nv_rd32(priv, 0x087044);
  97         int chid;
  98
  99         engctx = nouveau_engctx_get(engine, inst);
 100         chid   = pfifo->chid(pfifo, engctx);
 101
 102         if (stat & 0x00000040) {
 103                 nv_error(priv, "DISPATCH_ERROR [");
 104                 nouveau_enum_print(nv98_crypt_isr_error_name, ssta);
 105                 pr_cont("] ch %d [0x%010llx %s] subc %d mthd 0x%04x data 0x%08x\n",
 106                        chid, (u64)inst << 12, nouveau_client_name(engctx),
 107                        subc, mthd, data);
 108                 nv_wr32(priv, 0x087004, 0x00000040);
 109                 stat &= ~0x00000040;
 110         }
 111
 112         if (stat) {
 113                 nv_error(priv, "unhandled intr 0x%08x\n", stat);
 114                 nv_wr32(priv, 0x087004, stat);
 115         }
 116
 117         nouveau_engctx_put(engctx);
 118 }
 119
 120 static int
 121 nv98_crypt_ctor(struct nouveau_object *parent, struct nouveau_object *engine,
 122                struct nouveau_oclass *oclass, void *data, u32 size,
 123                struct nouveau_object **pobject)
 124 {
 125         struct nv98_crypt_priv *priv;
 126         int ret;
 127
 128         ret = nouveau_falcon_create(parent, engine, oclass, 0x087000, true,
 129                                     "PCRYPT", "crypt", &priv);
 130         *pobject = nv_object(priv);
 131         if (ret)
 132                 return ret;
 133
 134         nv_subdev(priv)->unit = 0x00004000;
 135         nv_subdev(priv)->intr = nv98_crypt_intr;
 136         nv_engine(priv)->cclass = &nv98_crypt_cclass;
 137         nv_engine(priv)->sclass = nv98_crypt_sclass;
 138         nv_falcon(priv)->code.data = nv98_pcrypt_code;
 139         nv_falcon(priv)->code.size = sizeof(nv98_pcrypt_code);
 140         nv_falcon(priv)->data.data = nv98_pcrypt_data;
 141         nv_falcon(priv)->data.size = sizeof(nv98_pcrypt_data);
 142         return 0;
 143 }
 144
 145 struct nouveau_oclass
 146 nv98_crypt_oclass = {
 147         .handle = NV_ENGINE(CRYPT, 0x98),
 148         .ofuncs = &(struct nouveau_ofuncs) {
 149                 .ctor = nv98_crypt_ctor,
 150                 .dtor = _nouveau_falcon_dtor,
 151                 .init = _nouveau_falcon_init,
 152                 .fini = _nouveau_falcon_fini,
 153                 .rd32 = _nouveau_falcon_rd32,
 154                 .wr32 = _nouveau_falcon_wr32,
 155         },
 156 };