drivers/gpu/drm/nouveau/nvkm/engine/cipher/g84.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 <engine/cipher.h>
  25 #include <engine/fifo.h>
  26
  27 #include <core/client.h>
  28 #include <core/engctx.h>
  29 #include <core/enum.h>
  30
  31 struct g84_cipher_priv {
  32         struct nvkm_engine base;
  33 };
  34
  35 /*******************************************************************************
  36  * Crypt object classes
  37  ******************************************************************************/
  38
  39 static int
  40 g84_cipher_object_ctor(struct nvkm_object *parent,
  41                        struct nvkm_object *engine,
  42                        struct nvkm_oclass *oclass, void *data, u32 size,
  43                        struct nvkm_object **pobject)
  44 {
  45         struct nvkm_gpuobj *obj;
  46         int ret;
  47
  48         ret = nvkm_gpuobj_create(parent, engine, oclass, 0, parent,
  49                                  16, 16, 0, &obj);
  50         *pobject = nv_object(obj);
  51         if (ret)
  52                 return ret;
  53
  54         nv_wo32(obj, 0x00, nv_mclass(obj));
  55         nv_wo32(obj, 0x04, 0x00000000);
  56         nv_wo32(obj, 0x08, 0x00000000);
  57         nv_wo32(obj, 0x0c, 0x00000000);
  58         return 0;
  59 }
  60
  61 static struct nvkm_ofuncs
  62 g84_cipher_ofuncs = {
  63         .ctor = g84_cipher_object_ctor,
  64         .dtor = _nvkm_gpuobj_dtor,
  65         .init = _nvkm_gpuobj_init,
  66         .fini = _nvkm_gpuobj_fini,
  67         .rd32 = _nvkm_gpuobj_rd32,
  68         .wr32 = _nvkm_gpuobj_wr32,
  69 };
  70
  71 static struct nvkm_oclass
  72 g84_cipher_sclass[] = {
  73         { 0x74c1, &g84_cipher_ofuncs },
  74         {}
  75 };
  76
  77 /*******************************************************************************
  78  * PCIPHER context
  79  ******************************************************************************/
  80
  81 static struct nvkm_oclass
  82 g84_cipher_cclass = {
  83         .handle = NV_ENGCTX(CIPHER, 0x84),
  84         .ofuncs = &(struct nvkm_ofuncs) {
  85                 .ctor = _nvkm_engctx_ctor,
  86                 .dtor = _nvkm_engctx_dtor,
  87                 .init = _nvkm_engctx_init,
  88                 .fini = _nvkm_engctx_fini,
  89                 .rd32 = _nvkm_engctx_rd32,
  90                 .wr32 = _nvkm_engctx_wr32,
  91         },
  92 };
  93
  94 /*******************************************************************************
  95  * PCIPHER engine/subdev functions
  96  ******************************************************************************/
  97
  98 static const struct nvkm_bitfield
  99 g84_cipher_intr_mask[] = {
 100         { 0x00000001, "INVALID_STATE" },
 101         { 0x00000002, "ILLEGAL_MTHD" },
 102         { 0x00000004, "ILLEGAL_CLASS" },
 103         { 0x00000080, "QUERY" },
 104         { 0x00000100, "FAULT" },
 105         {}
 106 };
 107
 108 static void
 109 g84_cipher_intr(struct nvkm_subdev *subdev)
 110 {
 111         struct nvkm_fifo *pfifo = nvkm_fifo(subdev);
 112         struct nvkm_engine *engine = nv_engine(subdev);
 113         struct nvkm_object *engctx;
 114         struct g84_cipher_priv *priv = (void *)subdev;
 115         u32 stat = nv_rd32(priv, 0x102130);
 116         u32 mthd = nv_rd32(priv, 0x102190);
 117         u32 data = nv_rd32(priv, 0x102194);
 118         u32 inst = nv_rd32(priv, 0x102188) & 0x7fffffff;
 119         int chid;
 120
 121         engctx = nvkm_engctx_get(engine, inst);
 122         chid   = pfifo->chid(pfifo, engctx);
 123
 124         if (stat) {
 125                 nv_error(priv, "%s", "");
 126                 nvkm_bitfield_print(g84_cipher_intr_mask, stat);
 127                 pr_cont(" ch %d [0x%010llx %s] mthd 0x%04x data 0x%08x\n",
 128                        chid, (u64)inst << 12, nvkm_client_name(engctx),
 129                        mthd, data);
 130         }
 131
 132         nv_wr32(priv, 0x102130, stat);
 133         nv_wr32(priv, 0x10200c, 0x10);
 134
 135         nvkm_engctx_put(engctx);
 136 }
 137
 138 static int
 139 g84_cipher_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
 140                 struct nvkm_oclass *oclass, void *data, u32 size,
 141                 struct nvkm_object **pobject)
 142 {
 143         struct g84_cipher_priv *priv;
 144         int ret;
 145
 146         ret = nvkm_engine_create(parent, engine, oclass, true,
 147                                  "PCIPHER", "cipher", &priv);
 148         *pobject = nv_object(priv);
 149         if (ret)
 150                 return ret;
 151
 152         nv_subdev(priv)->unit = 0x00004000;
 153         nv_subdev(priv)->intr = g84_cipher_intr;
 154         nv_engine(priv)->cclass = &g84_cipher_cclass;
 155         nv_engine(priv)->sclass = g84_cipher_sclass;
 156         return 0;
 157 }
 158
 159 static int
 160 g84_cipher_init(struct nvkm_object *object)
 161 {
 162         struct g84_cipher_priv *priv = (void *)object;
 163         int ret;
 164
 165         ret = nvkm_engine_init(&priv->base);
 166         if (ret)
 167                 return ret;
 168
 169         nv_wr32(priv, 0x102130, 0xffffffff);
 170         nv_wr32(priv, 0x102140, 0xffffffbf);
 171         nv_wr32(priv, 0x10200c, 0x00000010);
 172         return 0;
 173 }
 174
 175 struct nvkm_oclass
 176 g84_cipher_oclass = {
 177         .handle = NV_ENGINE(CIPHER, 0x84),
 178         .ofuncs = &(struct nvkm_ofuncs) {
 179                 .ctor = g84_cipher_ctor,
 180                 .dtor = _nvkm_engine_dtor,
 181                 .init = g84_cipher_init,
 182                 .fini = _nvkm_engine_fini,
 183         },
 184 };