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 #define nv04_sw_chan(p) container_of((p), struct nv04_sw_chan, base)
25 #include "priv.h"
26 #include "chan.h"
27 #include "nvsw.h"
28
29 #include <nvif/class.h>
30 #include <nvif/if0004.h>
31 #include <nvif/ioctl.h>
32 #include <nvif/unpack.h>
33
34 struct nv04_sw_chan {
35 struct nvkm_sw_chan base;
36 atomic_t ref;
37 };
38
39 /*******************************************************************************
40 * software object classes
41 ******************************************************************************/
42
43 static int
nv04_nvsw_mthd_get_ref(struct nvkm_nvsw * nvsw,void * data,u32 size)44 nv04_nvsw_mthd_get_ref(struct nvkm_nvsw *nvsw, void *data, u32 size)
45 {
46 struct nv04_sw_chan *chan = nv04_sw_chan(nvsw->chan);
47 union {
48 struct nv04_nvsw_get_ref_v0 v0;
49 } *args = data;
50 int ret = -ENOSYS;
51
52 if (!(ret = nvif_unpack(ret, &data, &size, args->v0, 0, 0, false))) {
53 args->v0.ref = atomic_read(&chan->ref);
54 }
55
56 return ret;
57 }
58
59 static int
nv04_nvsw_mthd(struct nvkm_nvsw * nvsw,u32 mthd,void * data,u32 size)60 nv04_nvsw_mthd(struct nvkm_nvsw *nvsw, u32 mthd, void *data, u32 size)
61 {
62 switch (mthd) {
63 case NV04_NVSW_GET_REF:
64 return nv04_nvsw_mthd_get_ref(nvsw, data, size);
65 default:
66 break;
67 }
68 return -EINVAL;
69 }
70
71 static const struct nvkm_nvsw_func
72 nv04_nvsw = {
73 .mthd = nv04_nvsw_mthd,
74 };
75
76 static int
nv04_nvsw_new(struct nvkm_sw_chan * chan,const struct nvkm_oclass * oclass,void * data,u32 size,struct nvkm_object ** pobject)77 nv04_nvsw_new(struct nvkm_sw_chan *chan, const struct nvkm_oclass *oclass,
78 void *data, u32 size, struct nvkm_object **pobject)
79 {
80 return nvkm_nvsw_new_(&nv04_nvsw, chan, oclass, data, size, pobject);
81 }
82
83 /*******************************************************************************
84 * software context
85 ******************************************************************************/
86
87 static bool
nv04_sw_chan_mthd(struct nvkm_sw_chan * base,int subc,u32 mthd,u32 data)88 nv04_sw_chan_mthd(struct nvkm_sw_chan *base, int subc, u32 mthd, u32 data)
89 {
90 struct nv04_sw_chan *chan = nv04_sw_chan(base);
91
92 switch (mthd) {
93 case 0x0150:
94 atomic_set(&chan->ref, data);
95 return true;
96 default:
97 break;
98 }
99
100 return false;
101 }
102
103 static const struct nvkm_sw_chan_func
104 nv04_sw_chan = {
105 .mthd = nv04_sw_chan_mthd,
106 };
107
108 static int
nv04_sw_chan_new(struct nvkm_sw * sw,struct nvkm_fifo_chan * fifo,const struct nvkm_oclass * oclass,struct nvkm_object ** pobject)109 nv04_sw_chan_new(struct nvkm_sw *sw, struct nvkm_fifo_chan *fifo,
110 const struct nvkm_oclass *oclass, struct nvkm_object **pobject)
111 {
112 struct nv04_sw_chan *chan;
113
114 if (!(chan = kzalloc(sizeof(*chan), GFP_KERNEL)))
115 return -ENOMEM;
116 atomic_set(&chan->ref, 0);
117 *pobject = &chan->base.object;
118
119 return nvkm_sw_chan_ctor(&nv04_sw_chan, sw, fifo, oclass, &chan->base);
120 }
121
122 /*******************************************************************************
123 * software engine/subdev functions
124 ******************************************************************************/
125
126 static const struct nvkm_sw_func
127 nv04_sw = {
128 .chan_new = nv04_sw_chan_new,
129 .sclass = {
130 { nv04_nvsw_new, { -1, -1, NVIF_CLASS_SW_NV04 } },
131 {}
132 }
133 };
134
135 int
nv04_sw_new(struct nvkm_device * device,int index,struct nvkm_sw ** psw)136 nv04_sw_new(struct nvkm_device *device, int index, struct nvkm_sw **psw)
137 {
138 return nvkm_sw_new_(&nv04_sw, device, index, psw);
139 }
140
