1 /* $NetBSD: nouveau_nvkm_subdev_ltc_gm107.c,v 1.3 2021/12/18 23:45:40 riastradh Exp $ */
2
3 /*
4 * Copyright 2014 Red Hat Inc.
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
23 *
24 * Authors: Ben Skeggs
25 */
26 #include <sys/cdefs.h>
27 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_ltc_gm107.c,v 1.3 2021/12/18 23:45:40 riastradh Exp $");
28
29 #include "priv.h"
30
31 #include <subdev/fb.h>
32 #include <subdev/timer.h>
33
34 void
gm107_ltc_cbc_clear(struct nvkm_ltc * ltc,u32 start,u32 limit)35 gm107_ltc_cbc_clear(struct nvkm_ltc *ltc, u32 start, u32 limit)
36 {
37 struct nvkm_device *device = ltc->subdev.device;
38 nvkm_wr32(device, 0x17e270, start);
39 nvkm_wr32(device, 0x17e274, limit);
40 nvkm_mask(device, 0x17e26c, 0x00000000, 0x00000004);
41 }
42
43 void
gm107_ltc_cbc_wait(struct nvkm_ltc * ltc)44 gm107_ltc_cbc_wait(struct nvkm_ltc *ltc)
45 {
46 struct nvkm_device *device = ltc->subdev.device;
47 int c, s;
48 for (c = 0; c < ltc->ltc_nr; c++) {
49 for (s = 0; s < ltc->lts_nr; s++) {
50 const u32 addr = 0x14046c + (c * 0x2000) + (s * 0x200);
51 nvkm_wait_msec(device, 2000, addr,
52 0x00000004, 0x00000000);
53 }
54 }
55 }
56
57 void
gm107_ltc_zbc_clear_color(struct nvkm_ltc * ltc,int i,const u32 color[4])58 gm107_ltc_zbc_clear_color(struct nvkm_ltc *ltc, int i, const u32 color[4])
59 {
60 struct nvkm_device *device = ltc->subdev.device;
61 nvkm_mask(device, 0x17e338, 0x0000000f, i);
62 nvkm_wr32(device, 0x17e33c, color[0]);
63 nvkm_wr32(device, 0x17e340, color[1]);
64 nvkm_wr32(device, 0x17e344, color[2]);
65 nvkm_wr32(device, 0x17e348, color[3]);
66 }
67
68 void
gm107_ltc_zbc_clear_depth(struct nvkm_ltc * ltc,int i,const u32 depth)69 gm107_ltc_zbc_clear_depth(struct nvkm_ltc *ltc, int i, const u32 depth)
70 {
71 struct nvkm_device *device = ltc->subdev.device;
72 nvkm_mask(device, 0x17e338, 0x0000000f, i);
73 nvkm_wr32(device, 0x17e34c, depth);
74 }
75
76 void
gm107_ltc_intr_lts(struct nvkm_ltc * ltc,int c,int s)77 gm107_ltc_intr_lts(struct nvkm_ltc *ltc, int c, int s)
78 {
79 struct nvkm_subdev *subdev = <c->subdev;
80 struct nvkm_device *device = subdev->device;
81 u32 base = 0x140400 + (c * 0x2000) + (s * 0x200);
82 u32 intr = nvkm_rd32(device, base + 0x00c);
83 u16 stat = intr & 0x0000ffff;
84 char msg[128];
85
86 if (stat) {
87 nvkm_snprintbf(msg, sizeof(msg), gf100_ltc_lts_intr_name, stat);
88 nvkm_error(subdev, "LTC%d_LTS%d: %08x [%s]\n", c, s, intr, msg);
89 }
90
91 nvkm_wr32(device, base + 0x00c, intr);
92 }
93
94 void
gm107_ltc_intr(struct nvkm_ltc * ltc)95 gm107_ltc_intr(struct nvkm_ltc *ltc)
96 {
97 struct nvkm_device *device = ltc->subdev.device;
98 u32 mask;
99
100 mask = nvkm_rd32(device, 0x00017c);
101 while (mask) {
102 u32 s, c = __ffs(mask);
103 for (s = 0; s < ltc->lts_nr; s++)
104 gm107_ltc_intr_lts(ltc, c, s);
105 mask &= ~(1 << c);
106 }
107 }
108
109 static int
gm107_ltc_oneinit(struct nvkm_ltc * ltc)110 gm107_ltc_oneinit(struct nvkm_ltc *ltc)
111 {
112 struct nvkm_device *device = ltc->subdev.device;
113 const u32 parts = nvkm_rd32(device, 0x022438);
114 const u32 mask = nvkm_rd32(device, 0x021c14);
115 const u32 slice = nvkm_rd32(device, 0x17e280) >> 28;
116 int i;
117
118 for (i = 0; i < parts; i++) {
119 if (!(mask & (1 << i)))
120 ltc->ltc_nr++;
121 }
122 ltc->lts_nr = slice;
123
124 return gf100_ltc_oneinit_tag_ram(ltc);
125 }
126
127 static void
gm107_ltc_init(struct nvkm_ltc * ltc)128 gm107_ltc_init(struct nvkm_ltc *ltc)
129 {
130 struct nvkm_device *device = ltc->subdev.device;
131 u32 lpg128 = !(nvkm_rd32(device, 0x100c80) & 0x00000001);
132
133 nvkm_wr32(device, 0x17e27c, ltc->ltc_nr);
134 nvkm_wr32(device, 0x17e278, ltc->tag_base);
135 nvkm_mask(device, 0x17e264, 0x00000002, lpg128 ? 0x00000002 : 0x00000000);
136 }
137
138 static const struct nvkm_ltc_func
139 gm107_ltc = {
140 .oneinit = gm107_ltc_oneinit,
141 .init = gm107_ltc_init,
142 .intr = gm107_ltc_intr,
143 .cbc_clear = gm107_ltc_cbc_clear,
144 .cbc_wait = gm107_ltc_cbc_wait,
145 .zbc = 16,
146 .zbc_clear_color = gm107_ltc_zbc_clear_color,
147 .zbc_clear_depth = gm107_ltc_zbc_clear_depth,
148 .invalidate = gf100_ltc_invalidate,
149 .flush = gf100_ltc_flush,
150 };
151
152 int
gm107_ltc_new(struct nvkm_device * device,int index,struct nvkm_ltc ** pltc)153 gm107_ltc_new(struct nvkm_device *device, int index, struct nvkm_ltc **pltc)
154 {
155 return nvkm_ltc_new_(&gm107_ltc, device, index, pltc);
156 }
157