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
29static void
30gm107_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_wr32(device, 0x17e26c, 0x00000004);
36}
37
38static void
39gm107_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_msec(device, 2000,
47				if (!nvkm_rd32(device, addr))
48					break;
49			);
50		}
51	}
52}
53
54static void
55gm107_ltc_zbc_clear_color(struct nvkm_ltc *ltc, int i, const u32 color[4])
56{
57	struct nvkm_device *device = ltc->subdev.device;
58	nvkm_mask(device, 0x17e338, 0x0000000f, i);
59	nvkm_wr32(device, 0x17e33c, color[0]);
60	nvkm_wr32(device, 0x17e340, color[1]);
61	nvkm_wr32(device, 0x17e344, color[2]);
62	nvkm_wr32(device, 0x17e348, color[3]);
63}
64
65static void
66gm107_ltc_zbc_clear_depth(struct nvkm_ltc *ltc, int i, const u32 depth)
67{
68	struct nvkm_device *device = ltc->subdev.device;
69	nvkm_mask(device, 0x17e338, 0x0000000f, i);
70	nvkm_wr32(device, 0x17e34c, depth);
71}
72
73static void
74gm107_ltc_lts_isr(struct nvkm_ltc *ltc, int c, int s)
75{
76	struct nvkm_subdev *subdev = &ltc->subdev;
77	struct nvkm_device *device = subdev->device;
78	u32 base = 0x140000 + (c * 0x2000) + (s * 0x400);
79	u32 stat = nvkm_rd32(device, base + 0x00c);
80
81	if (stat) {
82		nvkm_error(subdev, "LTC%d_LTS%d: %08x\n", c, s, stat);
83		nvkm_wr32(device, base + 0x00c, stat);
84	}
85}
86
87static void
88gm107_ltc_intr(struct nvkm_ltc *ltc)
89{
90	struct nvkm_device *device = ltc->subdev.device;
91	u32 mask;
92
93	mask = nvkm_rd32(device, 0x00017c);
94	while (mask) {
95		u32 s, c = __ffs(mask);
96		for (s = 0; s < ltc->lts_nr; s++)
97			gm107_ltc_lts_isr(ltc, c, s);
98		mask &= ~(1 << c);
99	}
100}
101
102static int
103gm107_ltc_oneinit(struct nvkm_ltc *ltc)
104{
105	struct nvkm_device *device = ltc->subdev.device;
106	const u32 parts = nvkm_rd32(device, 0x022438);
107	const u32  mask = nvkm_rd32(device, 0x021c14);
108	const u32 slice = nvkm_rd32(device, 0x17e280) >> 28;
109	int i;
110
111	for (i = 0; i < parts; i++) {
112		if (!(mask & (1 << i)))
113			ltc->ltc_nr++;
114	}
115	ltc->lts_nr = slice;
116
117	return gf100_ltc_oneinit_tag_ram(ltc);
118}
119
120static void
121gm107_ltc_init(struct nvkm_ltc *ltc)
122{
123	struct nvkm_device *device = ltc->subdev.device;
124	u32 lpg128 = !(nvkm_rd32(device, 0x100c80) & 0x00000001);
125
126	nvkm_wr32(device, 0x17e27c, ltc->ltc_nr);
127	nvkm_wr32(device, 0x17e278, ltc->tag_base);
128	nvkm_mask(device, 0x17e264, 0x00000002, lpg128 ? 0x00000002 : 0x00000000);
129}
130
131static const struct nvkm_ltc_func
132gm107_ltc = {
133	.oneinit = gm107_ltc_oneinit,
134	.init = gm107_ltc_init,
135	.intr = gm107_ltc_intr,
136	.cbc_clear = gm107_ltc_cbc_clear,
137	.cbc_wait = gm107_ltc_cbc_wait,
138	.zbc = 16,
139	.zbc_clear_color = gm107_ltc_zbc_clear_color,
140	.zbc_clear_depth = gm107_ltc_zbc_clear_depth,
141	.invalidate = gf100_ltc_invalidate,
142	.flush = gf100_ltc_flush,
143};
144
145int
146gm107_ltc_new(struct nvkm_device *device, int index, struct nvkm_ltc **pltc)
147{
148	return nvkm_ltc_new_(&gm107_ltc, device, index, pltc);
149}
150