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 "nv50.h"
25 
26 #include <core/gpuobj.h>
27 #include <subdev/bar.h>
28 #include <engine/disp.h>
29 #include <engine/fifo.h>
30 
31 #include <nvif/class.h>
32 #include <nvif/event.h>
33 
34 /*******************************************************************************
35  * software context
36  ******************************************************************************/
37 
38 static int
39 gf100_sw_chan_vblsem_release(struct nvkm_notify *notify)
40 {
41 	struct nv50_sw_chan *chan =
42 		container_of(notify, typeof(*chan), vblank.notify[notify->index]);
43 	struct nvkm_sw *sw = chan->base.sw;
44 	struct nvkm_device *device = sw->engine.subdev.device;
45 	u32 inst = chan->base.fifo->inst->addr >> 12;
46 
47 	nvkm_wr32(device, 0x001718, 0x80000000 | inst);
48 	nvkm_bar_flush(device->bar);
49 	nvkm_wr32(device, 0x06000c, upper_32_bits(chan->vblank.offset));
50 	nvkm_wr32(device, 0x060010, lower_32_bits(chan->vblank.offset));
51 	nvkm_wr32(device, 0x060014, chan->vblank.value);
52 
53 	return NVKM_NOTIFY_DROP;
54 }
55 
56 static bool
57 gf100_sw_chan_mthd(struct nvkm_sw_chan *base, int subc, u32 mthd, u32 data)
58 {
59 	struct nv50_sw_chan *chan = nv50_sw_chan(base);
60 	struct nvkm_engine *engine = chan->base.object.engine;
61 	struct nvkm_device *device = engine->subdev.device;
62 	switch (mthd) {
63 	case 0x0400:
64 		chan->vblank.offset &= 0x00ffffffffULL;
65 		chan->vblank.offset |= (u64)data << 32;
66 		return true;
67 	case 0x0404:
68 		chan->vblank.offset &= 0xff00000000ULL;
69 		chan->vblank.offset |= data;
70 		return true;
71 	case 0x0408:
72 		chan->vblank.value = data;
73 		return true;
74 	case 0x040c:
75 		if (data < device->disp->vblank.index_nr) {
76 			nvkm_notify_get(&chan->vblank.notify[data]);
77 			return true;
78 		}
79 		break;
80 	case 0x600: /* MP.PM_UNK000 */
81 		nvkm_wr32(device, 0x419e00, data);
82 		return true;
83 	case 0x644: /* MP.TRAP_WARP_ERROR_EN */
84 		if (!(data & ~0x001ffffe)) {
85 			nvkm_wr32(device, 0x419e44, data);
86 			return true;
87 		}
88 		break;
89 	case 0x6ac: /* MP.PM_UNK0AC */
90 		nvkm_wr32(device, 0x419eac, data);
91 		return true;
92 	default:
93 		break;
94 	}
95 	return false;
96 }
97 
98 static const struct nvkm_sw_chan_func
99 gf100_sw_chan = {
100 	.dtor = nv50_sw_chan_dtor,
101 	.mthd = gf100_sw_chan_mthd,
102 };
103 
104 static int
105 gf100_sw_chan_new(struct nvkm_sw *sw, struct nvkm_fifo_chan *fifoch,
106 		  const struct nvkm_oclass *oclass,
107 		  struct nvkm_object **pobject)
108 {
109 	struct nvkm_disp *disp = sw->engine.subdev.device->disp;
110 	struct nv50_sw_chan *chan;
111 	int ret, i;
112 
113 	if (!(chan = kzalloc(sizeof(*chan), GFP_KERNEL)))
114 		return -ENOMEM;
115 	*pobject = &chan->base.object;
116 
117 	ret = nvkm_sw_chan_ctor(&gf100_sw_chan, sw, fifoch, oclass,
118 				&chan->base);
119 	if (ret)
120 		return ret;
121 
122 	for (i = 0; disp && i < disp->vblank.index_nr; i++) {
123 		ret = nvkm_notify_init(NULL, &disp->vblank,
124 				       gf100_sw_chan_vblsem_release, false,
125 				       &(struct nvif_notify_head_req_v0) {
126 					.head = i,
127 				       },
128 				       sizeof(struct nvif_notify_head_req_v0),
129 				       sizeof(struct nvif_notify_head_rep_v0),
130 				       &chan->vblank.notify[i]);
131 		if (ret)
132 			return ret;
133 	}
134 
135 	return 0;
136 }
137 
138 /*******************************************************************************
139  * software engine/subdev functions
140  ******************************************************************************/
141 
142 static const struct nvkm_sw_func
143 gf100_sw = {
144 	.chan_new = gf100_sw_chan_new,
145 	.sclass = {
146 		{ nvkm_nvsw_new, { -1, -1, NVIF_CLASS_SW_GF100 } },
147 		{}
148 	}
149 };
150 
151 int
152 gf100_sw_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_sw **psw)
153 {
154 	return nvkm_sw_new_(&gf100_sw, device, type, inst, psw);
155 }
156