summaryrefslogtreecommitdiff
path: root/drivers/gpu/drm/nouveau/nvkm/engine/sw/nv04.c
blob: 445217ffa7911c73ea0ab6a12eb3a11ebe58d190 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
/*
 * Copyright 2012 Red Hat Inc.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
 *
 * Authors: Ben Skeggs
 */
#define nv04_sw_chan(p) container_of((p), struct nv04_sw_chan, base)
#include "priv.h"
#include "chan.h"
#include "nvsw.h"

#include <nvif/class.h>
#include <nvif/ioctl.h>
#include <nvif/unpack.h>

struct nv04_sw_chan {
	struct nvkm_sw_chan base;
	atomic_t ref;
};

/*******************************************************************************
 * software object classes
 ******************************************************************************/

static int
nv04_nvsw_mthd_get_ref(struct nvkm_nvsw *nvsw, void *data, u32 size)
{
	struct nv04_sw_chan *chan = nv04_sw_chan(nvsw->chan);
	union {
		struct nv04_nvsw_get_ref_v0 v0;
	} *args = data;
	int ret;

	if (nvif_unpack(args->v0, 0, 0, false)) {
		args->v0.ref = atomic_read(&chan->ref);
	}

	return ret;
}

static int
nv04_nvsw_mthd(struct nvkm_nvsw *nvsw, u32 mthd, void *data, u32 size)
{
	switch (mthd) {
	case NV04_NVSW_GET_REF:
		return nv04_nvsw_mthd_get_ref(nvsw, data, size);
	default:
		break;
	}
	return -EINVAL;
}

static const struct nvkm_nvsw_func
nv04_nvsw = {
	.mthd = nv04_nvsw_mthd,
};

static int
nv04_nvsw_new(struct nvkm_sw_chan *chan, const struct nvkm_oclass *oclass,
	      void *data, u32 size, struct nvkm_object **pobject)
{
	return nvkm_nvsw_new_(&nv04_nvsw, chan, oclass, data, size, pobject);
}

/*******************************************************************************
 * software context
 ******************************************************************************/

static bool
nv04_sw_chan_mthd(struct nvkm_sw_chan *base, int subc, u32 mthd, u32 data)
{
	struct nv04_sw_chan *chan = nv04_sw_chan(base);

	switch (mthd) {
	case 0x0150:
		atomic_set(&chan->ref, data);
		return true;
	default:
		break;
	}

	return false;
}

static const struct nvkm_sw_chan_func
nv04_sw_chan = {
	.mthd = nv04_sw_chan_mthd,
};

static int
nv04_sw_chan_new(struct nvkm_sw *sw, struct nvkm_fifo_chan *fifo,
		 const struct nvkm_oclass *oclass, struct nvkm_object **pobject)
{
	struct nv04_sw_chan *chan;

	if (!(chan = kzalloc(sizeof(*chan), GFP_KERNEL)))
		return -ENOMEM;
	atomic_set(&chan->ref, 0);
	*pobject = &chan->base.object;

	return nvkm_sw_chan_ctor(&nv04_sw_chan, sw, fifo, oclass, &chan->base);
}

/*******************************************************************************
 * software engine/subdev functions
 ******************************************************************************/

static const struct nvkm_sw_func
nv04_sw = {
	.chan_new = nv04_sw_chan_new,
	.sclass = {
		{ nv04_nvsw_new, { -1, -1, NVIF_IOCTL_NEW_V0_SW_NV04 } },
		{}
	}
};

int
nv04_sw_new(struct nvkm_device *device, int index, struct nvkm_sw **psw)
{
	return nvkm_sw_new_(&nv04_sw, device, index, psw);
}