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1 | /* |
2 | * Copyright 2013 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 <bskeggs@redhat.com> | |
23 | */ | |
bb23f9d7 | 24 | #include "priv.h" |
2984506f | 25 | |
5f8824de | 26 | struct nvkm_hwsq { |
bb23f9d7 | 27 | struct nvkm_subdev *subdev; |
2984506f BS |
28 | u32 addr; |
29 | u32 data; | |
30 | struct { | |
31 | u8 data[512]; | |
d9da545e | 32 | u16 size; |
2984506f BS |
33 | } c; |
34 | }; | |
35 | ||
36 | static void | |
5f8824de | 37 | hwsq_cmd(struct nvkm_hwsq *hwsq, int size, u8 data[]) |
2984506f BS |
38 | { |
39 | memcpy(&hwsq->c.data[hwsq->c.size], data, size * sizeof(data[0])); | |
40 | hwsq->c.size += size; | |
41 | } | |
42 | ||
43 | int | |
bb23f9d7 | 44 | nvkm_hwsq_init(struct nvkm_subdev *subdev, struct nvkm_hwsq **phwsq) |
2984506f | 45 | { |
5f8824de | 46 | struct nvkm_hwsq *hwsq; |
2984506f BS |
47 | |
48 | hwsq = *phwsq = kmalloc(sizeof(*hwsq), GFP_KERNEL); | |
49 | if (hwsq) { | |
bb23f9d7 | 50 | hwsq->subdev = subdev; |
2984506f BS |
51 | hwsq->addr = ~0; |
52 | hwsq->data = ~0; | |
53 | memset(hwsq->c.data, 0x7f, sizeof(hwsq->c.data)); | |
54 | hwsq->c.size = 0; | |
55 | } | |
56 | ||
57 | return hwsq ? 0 : -ENOMEM; | |
58 | } | |
59 | ||
60 | int | |
5f8824de | 61 | nvkm_hwsq_fini(struct nvkm_hwsq **phwsq, bool exec) |
2984506f | 62 | { |
5f8824de | 63 | struct nvkm_hwsq *hwsq = *phwsq; |
2984506f BS |
64 | int ret = 0, i; |
65 | if (hwsq) { | |
bb23f9d7 BS |
66 | struct nvkm_subdev *subdev = hwsq->subdev; |
67 | struct nvkm_bus *bus = subdev->device->bus; | |
2984506f | 68 | hwsq->c.size = (hwsq->c.size + 4) / 4; |
bb23f9d7 | 69 | if (hwsq->c.size <= bus->func->hwsq_size) { |
2984506f | 70 | if (exec) |
bb23f9d7 BS |
71 | ret = bus->func->hwsq_exec(bus, |
72 | (u32 *)hwsq->c.data, | |
73 | hwsq->c.size); | |
2984506f | 74 | if (ret) |
a699a85a | 75 | nvkm_error(subdev, "hwsq exec failed: %d\n", ret); |
2984506f | 76 | } else { |
a699a85a | 77 | nvkm_error(subdev, "hwsq ucode too large\n"); |
2984506f BS |
78 | ret = -ENOSPC; |
79 | } | |
80 | ||
81 | for (i = 0; ret && i < hwsq->c.size; i++) | |
a699a85a | 82 | nvkm_error(subdev, "\t%08x\n", ((u32 *)hwsq->c.data)[i]); |
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83 | |
84 | *phwsq = NULL; | |
85 | kfree(hwsq); | |
86 | } | |
87 | return ret; | |
88 | } | |
89 | ||
90 | void | |
5f8824de | 91 | nvkm_hwsq_wr32(struct nvkm_hwsq *hwsq, u32 addr, u32 data) |
2984506f | 92 | { |
bb23f9d7 | 93 | nvkm_debug(hwsq->subdev, "R[%06x] = %08x\n", addr, data); |
2984506f BS |
94 | |
95 | if (hwsq->data != data) { | |
96 | if ((data & 0xffff0000) != (hwsq->data & 0xffff0000)) { | |
97 | hwsq_cmd(hwsq, 5, (u8[]){ 0xe2, data, data >> 8, | |
98 | data >> 16, data >> 24 }); | |
99 | } else { | |
100 | hwsq_cmd(hwsq, 3, (u8[]){ 0x42, data, data >> 8 }); | |
101 | } | |
102 | } | |
103 | ||
104 | if ((addr & 0xffff0000) != (hwsq->addr & 0xffff0000)) { | |
105 | hwsq_cmd(hwsq, 5, (u8[]){ 0xe0, addr, addr >> 8, | |
106 | addr >> 16, addr >> 24 }); | |
107 | } else { | |
108 | hwsq_cmd(hwsq, 3, (u8[]){ 0x40, addr, addr >> 8 }); | |
109 | } | |
110 | ||
111 | hwsq->addr = addr; | |
112 | hwsq->data = data; | |
113 | } | |
114 | ||
115 | void | |
5f8824de | 116 | nvkm_hwsq_setf(struct nvkm_hwsq *hwsq, u8 flag, int data) |
2984506f | 117 | { |
bb23f9d7 | 118 | nvkm_debug(hwsq->subdev, " FLAG[%02x] = %d\n", flag, data); |
2984506f BS |
119 | flag += 0x80; |
120 | if (data >= 0) | |
121 | flag += 0x20; | |
122 | if (data >= 1) | |
123 | flag += 0x20; | |
124 | hwsq_cmd(hwsq, 1, (u8[]){ flag }); | |
125 | } | |
126 | ||
127 | void | |
5f8824de | 128 | nvkm_hwsq_wait(struct nvkm_hwsq *hwsq, u8 flag, u8 data) |
2984506f | 129 | { |
bb23f9d7 | 130 | nvkm_debug(hwsq->subdev, " WAIT[%02x] = %d\n", flag, data); |
2984506f BS |
131 | hwsq_cmd(hwsq, 3, (u8[]){ 0x5f, flag, data }); |
132 | } | |
133 | ||
271c2766 RS |
134 | void |
135 | nvkm_hwsq_wait_vblank(struct nvkm_hwsq *hwsq) | |
136 | { | |
137 | struct nvkm_subdev *subdev = hwsq->subdev; | |
138 | struct nvkm_device *device = subdev->device; | |
139 | u32 heads, x, y, px = 0; | |
140 | int i, head_sync; | |
141 | ||
142 | heads = nvkm_rd32(device, 0x610050); | |
143 | for (i = 0; i < 2; i++) { | |
144 | /* Heuristic: sync to head with biggest resolution */ | |
145 | if (heads & (2 << (i << 3))) { | |
146 | x = nvkm_rd32(device, 0x610b40 + (0x540 * i)); | |
147 | y = (x & 0xffff0000) >> 16; | |
148 | x &= 0x0000ffff; | |
149 | if ((x * y) > px) { | |
150 | px = (x * y); | |
151 | head_sync = i; | |
152 | } | |
153 | } | |
154 | } | |
155 | ||
156 | if (px == 0) { | |
157 | nvkm_debug(subdev, "WAIT VBLANK !NO ACTIVE HEAD\n"); | |
158 | return; | |
159 | } | |
160 | ||
161 | nvkm_debug(subdev, "WAIT VBLANK HEAD%d\n", head_sync); | |
162 | nvkm_hwsq_wait(hwsq, head_sync ? 0x3 : 0x1, 0x0); | |
163 | nvkm_hwsq_wait(hwsq, head_sync ? 0x3 : 0x1, 0x1); | |
164 | } | |
165 | ||
2984506f | 166 | void |
5f8824de | 167 | nvkm_hwsq_nsec(struct nvkm_hwsq *hwsq, u32 nsec) |
2984506f BS |
168 | { |
169 | u8 shift = 0, usec = nsec / 1000; | |
170 | while (usec & ~3) { | |
171 | usec >>= 2; | |
172 | shift++; | |
173 | } | |
174 | ||
bb23f9d7 | 175 | nvkm_debug(hwsq->subdev, " DELAY = %d ns\n", nsec); |
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176 | hwsq_cmd(hwsq, 1, (u8[]){ 0x00 | (shift << 2) | usec }); |
177 | } |