LXR linux/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
  39struct nv98_crypt_priv {
  40        struct nouveau_falcon base;
  41};
  42
  43/*******************************************************************************
  44 * Crypt object classes
  45 ******************************************************************************/
  46
  47static struct nouveau_oclass
  48nv98_crypt_sclass[] = {
  49        { 0x88b4, &nouveau_object_ofuncs },
  50        {},
  51};
  52
  53/*******************************************************************************
  54 * PCRYPT context
  55 ******************************************************************************/
  56
  57static struct nouveau_oclass
  58nv98_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
  74static 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
  82static void
  83nv98_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
 120static int
 121nv98_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
 145struct nouveau_oclass
 146nv98_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};
 157