Add the rt linux 4.1.3-rt3 as base
[kvmfornfv.git] / kernel / drivers / gpu / drm / nouveau / nvkm / engine / ce / gt215.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/ce.h>
25 #include <engine/falcon.h>
26 #include <engine/fifo.h>
27 #include "fuc/gt215.fuc3.h"
28
29 #include <core/client.h>
30 #include <core/device.h>
31 #include <core/enum.h>
32
33 struct gt215_ce_priv {
34         struct nvkm_falcon base;
35 };
36
37 /*******************************************************************************
38  * Copy object classes
39  ******************************************************************************/
40
41 static struct nvkm_oclass
42 gt215_ce_sclass[] = {
43         { 0x85b5, &nvkm_object_ofuncs },
44         {}
45 };
46
47 /*******************************************************************************
48  * PCE context
49  ******************************************************************************/
50
51 static struct nvkm_oclass
52 gt215_ce_cclass = {
53         .handle = NV_ENGCTX(CE0, 0xa3),
54         .ofuncs = &(struct nvkm_ofuncs) {
55                 .ctor = _nvkm_falcon_context_ctor,
56                 .dtor = _nvkm_falcon_context_dtor,
57                 .init = _nvkm_falcon_context_init,
58                 .fini = _nvkm_falcon_context_fini,
59                 .rd32 = _nvkm_falcon_context_rd32,
60                 .wr32 = _nvkm_falcon_context_wr32,
61
62         },
63 };
64
65 /*******************************************************************************
66  * PCE engine/subdev functions
67  ******************************************************************************/
68
69 static const struct nvkm_enum
70 gt215_ce_isr_error_name[] = {
71         { 0x0001, "ILLEGAL_MTHD" },
72         { 0x0002, "INVALID_ENUM" },
73         { 0x0003, "INVALID_BITFIELD" },
74         {}
75 };
76
77 void
78 gt215_ce_intr(struct nvkm_subdev *subdev)
79 {
80         struct nvkm_fifo *pfifo = nvkm_fifo(subdev);
81         struct nvkm_engine *engine = nv_engine(subdev);
82         struct nvkm_falcon *falcon = (void *)subdev;
83         struct nvkm_object *engctx;
84         u32 dispatch = nv_ro32(falcon, 0x01c);
85         u32 stat = nv_ro32(falcon, 0x008) & dispatch & ~(dispatch >> 16);
86         u64 inst = nv_ro32(falcon, 0x050) & 0x3fffffff;
87         u32 ssta = nv_ro32(falcon, 0x040) & 0x0000ffff;
88         u32 addr = nv_ro32(falcon, 0x040) >> 16;
89         u32 mthd = (addr & 0x07ff) << 2;
90         u32 subc = (addr & 0x3800) >> 11;
91         u32 data = nv_ro32(falcon, 0x044);
92         int chid;
93
94         engctx = nvkm_engctx_get(engine, inst);
95         chid   = pfifo->chid(pfifo, engctx);
96
97         if (stat & 0x00000040) {
98                 nv_error(falcon, "DISPATCH_ERROR [");
99                 nvkm_enum_print(gt215_ce_isr_error_name, ssta);
100                 pr_cont("] ch %d [0x%010llx %s] subc %d mthd 0x%04x data 0x%08x\n",
101                        chid, inst << 12, nvkm_client_name(engctx), subc,
102                        mthd, data);
103                 nv_wo32(falcon, 0x004, 0x00000040);
104                 stat &= ~0x00000040;
105         }
106
107         if (stat) {
108                 nv_error(falcon, "unhandled intr 0x%08x\n", stat);
109                 nv_wo32(falcon, 0x004, stat);
110         }
111
112         nvkm_engctx_put(engctx);
113 }
114
115 static int
116 gt215_ce_ctor(struct nvkm_object *parent, struct nvkm_object *engine,
117               struct nvkm_oclass *oclass, void *data, u32 size,
118               struct nvkm_object **pobject)
119 {
120         bool enable = (nv_device(parent)->chipset != 0xaf);
121         struct gt215_ce_priv *priv;
122         int ret;
123
124         ret = nvkm_falcon_create(parent, engine, oclass, 0x104000, enable,
125                                  "PCE0", "ce0", &priv);
126         *pobject = nv_object(priv);
127         if (ret)
128                 return ret;
129
130         nv_subdev(priv)->unit = 0x00802000;
131         nv_subdev(priv)->intr = gt215_ce_intr;
132         nv_engine(priv)->cclass = &gt215_ce_cclass;
133         nv_engine(priv)->sclass = gt215_ce_sclass;
134         nv_falcon(priv)->code.data = gt215_pce_code;
135         nv_falcon(priv)->code.size = sizeof(gt215_pce_code);
136         nv_falcon(priv)->data.data = gt215_pce_data;
137         nv_falcon(priv)->data.size = sizeof(gt215_pce_data);
138         return 0;
139 }
140
141 struct nvkm_oclass
142 gt215_ce_oclass = {
143         .handle = NV_ENGINE(CE0, 0xa3),
144         .ofuncs = &(struct nvkm_ofuncs) {
145                 .ctor = gt215_ce_ctor,
146                 .dtor = _nvkm_falcon_dtor,
147                 .init = _nvkm_falcon_init,
148                 .fini = _nvkm_falcon_fini,
149                 .rd32 = _nvkm_falcon_rd32,
150                 .wr32 = _nvkm_falcon_wr32,
151         },
152 };