1 /*
2  * Copyright 2014 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 "priv.h"
25 
26 #include <subdev/fb.h>
27 #include <subdev/timer.h>
28 
29 void
30 gm107_ltc_cbc_clear(struct nvkm_ltc *ltc, u32 start, u32 limit)
31 {
32 	struct nvkm_device *device = ltc->subdev.device;
33 	nvkm_wr32(device, 0x17e270, start);
34 	nvkm_wr32(device, 0x17e274, limit);
35 	nvkm_mask(device, 0x17e26c, 0x00000000, 0x00000004);
36 }
37 
38 void
39 gm107_ltc_cbc_wait(struct nvkm_ltc *ltc)
40 {
41 	struct nvkm_device *device = ltc->subdev.device;
42 	int c, s;
43 	for (c = 0; c < ltc->ltc_nr; c++) {
44 		for (s = 0; s < ltc->lts_nr; s++) {
45 			const u32 addr = 0x14046c + (c * 0x2000) + (s * 0x200);
46 			nvkm_wait_msec(device, 2000, addr,
47 				       0x00000004, 0x00000000);
48 		}
49 	}
50 }
51 
52 void
53 gm107_ltc_zbc_clear_color(struct nvkm_ltc *ltc, int i, const u32 color[4])
54 {
55 	struct nvkm_device *device = ltc->subdev.device;
56 	nvkm_mask(device, 0x17e338, 0x0000000f, i);
57 	nvkm_wr32(device, 0x17e33c, color[0]);
58 	nvkm_wr32(device, 0x17e340, color[1]);
59 	nvkm_wr32(device, 0x17e344, color[2]);
60 	nvkm_wr32(device, 0x17e348, color[3]);
61 }
62 
63 void
64 gm107_ltc_zbc_clear_depth(struct nvkm_ltc *ltc, int i, const u32 depth)
65 {
66 	struct nvkm_device *device = ltc->subdev.device;
67 	nvkm_mask(device, 0x17e338, 0x0000000f, i);
68 	nvkm_wr32(device, 0x17e34c, depth);
69 }
70 
71 void
72 gm107_ltc_intr_lts(struct nvkm_ltc *ltc, int c, int s)
73 {
74 	struct nvkm_subdev *subdev = &ltc->subdev;
75 	struct nvkm_device *device = subdev->device;
76 	u32 base = 0x140400 + (c * 0x2000) + (s * 0x200);
77 	u32 intr = nvkm_rd32(device, base + 0x00c);
78 	u16 stat = intr & 0x0000ffff;
79 	char msg[128];
80 
81 	if (stat) {
82 		nvkm_snprintbf(msg, sizeof(msg), gf100_ltc_lts_intr_name, stat);
83 		nvkm_error(subdev, "LTC%d_LTS%d: %08x [%s]\n", c, s, intr, msg);
84 	}
85 
86 	nvkm_wr32(device, base + 0x00c, intr);
87 }
88 
89 void
90 gm107_ltc_intr(struct nvkm_ltc *ltc)
91 {
92 	struct nvkm_device *device = ltc->subdev.device;
93 	u32 mask;
94 
95 	mask = nvkm_rd32(device, 0x00017c);
96 	while (mask) {
97 		u32 s, c = __ffs(mask);
98 		for (s = 0; s < ltc->lts_nr; s++)
99 			gm107_ltc_intr_lts(ltc, c, s);
100 		mask &= ~(1 << c);
101 	}
102 }
103 
104 static int
105 gm107_ltc_oneinit(struct nvkm_ltc *ltc)
106 {
107 	struct nvkm_device *device = ltc->subdev.device;
108 	const u32 parts = nvkm_rd32(device, 0x022438);
109 	const u32  mask = nvkm_rd32(device, 0x021c14);
110 	const u32 slice = nvkm_rd32(device, 0x17e280) >> 28;
111 	int i;
112 
113 	for (i = 0; i < parts; i++) {
114 		if (!(mask & (1 << i)))
115 			ltc->ltc_nr++;
116 	}
117 	ltc->lts_nr = slice;
118 
119 	return gf100_ltc_oneinit_tag_ram(ltc);
120 }
121 
122 static void
123 gm107_ltc_init(struct nvkm_ltc *ltc)
124 {
125 	struct nvkm_device *device = ltc->subdev.device;
126 	u32 lpg128 = !(nvkm_rd32(device, 0x100c80) & 0x00000001);
127 
128 	nvkm_wr32(device, 0x17e27c, ltc->ltc_nr);
129 	nvkm_wr32(device, 0x17e278, ltc->tag_base);
130 	nvkm_mask(device, 0x17e264, 0x00000002, lpg128 ? 0x00000002 : 0x00000000);
131 }
132 
133 static const struct nvkm_ltc_func
134 gm107_ltc = {
135 	.oneinit = gm107_ltc_oneinit,
136 	.init = gm107_ltc_init,
137 	.intr = gm107_ltc_intr,
138 	.cbc_clear = gm107_ltc_cbc_clear,
139 	.cbc_wait = gm107_ltc_cbc_wait,
140 	.zbc_color = 16,
141 	.zbc_depth = 16,
142 	.zbc_clear_color = gm107_ltc_zbc_clear_color,
143 	.zbc_clear_depth = gm107_ltc_zbc_clear_depth,
144 	.invalidate = gf100_ltc_invalidate,
145 	.flush = gf100_ltc_flush,
146 };
147 
148 int
149 gm107_ltc_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
150 	      struct nvkm_ltc **pltc)
151 {
152 	return nvkm_ltc_new_(&gm107_ltc, device, type, inst, pltc);
153 }
154