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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 <bskeggs@redhat.com> | |
23 | */ | |
95484b57 BS |
24 | #include "priv.h" |
25 | ||
bd447053 | 26 | #include <core/memory.h> |
70bc7182 | 27 | #include <subdev/fb.h> |
95484b57 | 28 | |
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29 | int |
30 | nvkm_ltc_tags_alloc(struct nvkm_ltc *ltc, u32 n, struct nvkm_mm_node **pnode) | |
31 | { | |
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32 | struct nvkm_fb *fb = ltc->subdev.device->fb; |
33 | int ret = nvkm_mm_head(&fb->tags, 0, 1, n, n, 1, pnode); | |
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34 | if (ret) |
35 | *pnode = NULL; | |
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36 | return ret; |
37 | } | |
38 | ||
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39 | void |
40 | nvkm_ltc_tags_free(struct nvkm_ltc *ltc, struct nvkm_mm_node **pnode) | |
95484b57 | 41 | { |
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42 | struct nvkm_fb *fb = ltc->subdev.device->fb; |
43 | nvkm_mm_free(&fb->tags, pnode); | |
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44 | } |
45 | ||
70bc7182 | 46 | void |
b1e839f3 | 47 | nvkm_ltc_tags_clear(struct nvkm_device *device, u32 first, u32 count) |
95484b57 | 48 | { |
b1e839f3 | 49 | struct nvkm_ltc *ltc = device->ltc; |
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50 | const u32 limit = first + count - 1; |
51 | ||
c7750cfb | 52 | BUG_ON((first > limit) || (limit >= ltc->num_tags)); |
95484b57 | 53 | |
f4e65efc | 54 | mutex_lock(<c->subdev.mutex); |
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55 | ltc->func->cbc_clear(ltc, first, limit); |
56 | ltc->func->cbc_wait(ltc); | |
f4e65efc | 57 | mutex_unlock(<c->subdev.mutex); |
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58 | } |
59 | ||
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60 | int |
61 | nvkm_ltc_zbc_color_get(struct nvkm_ltc *ltc, int index, const u32 color[4]) | |
f38fdb6a | 62 | { |
c7750cfb | 63 | memcpy(ltc->zbc_color[index], color, sizeof(ltc->zbc_color[index])); |
70bc7182 | 64 | ltc->func->zbc_clear_color(ltc, index, color); |
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65 | return index; |
66 | } | |
67 | ||
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68 | int |
69 | nvkm_ltc_zbc_depth_get(struct nvkm_ltc *ltc, int index, const u32 depth) | |
f38fdb6a | 70 | { |
c7750cfb | 71 | ltc->zbc_depth[index] = depth; |
70bc7182 | 72 | ltc->func->zbc_clear_depth(ltc, index, depth); |
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73 | return index; |
74 | } | |
75 | ||
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76 | void |
77 | nvkm_ltc_invalidate(struct nvkm_ltc *ltc) | |
78 | { | |
79 | if (ltc->func->invalidate) | |
80 | ltc->func->invalidate(ltc); | |
81 | } | |
82 | ||
83 | void | |
84 | nvkm_ltc_flush(struct nvkm_ltc *ltc) | |
85 | { | |
86 | if (ltc->func->flush) | |
87 | ltc->func->flush(ltc); | |
88 | } | |
89 | ||
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90 | static void |
91 | nvkm_ltc_intr(struct nvkm_subdev *subdev) | |
f38fdb6a | 92 | { |
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93 | struct nvkm_ltc *ltc = nvkm_ltc(subdev); |
94 | ltc->func->intr(ltc); | |
95 | } | |
f38fdb6a | 96 | |
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97 | static int |
98 | nvkm_ltc_oneinit(struct nvkm_subdev *subdev) | |
99 | { | |
100 | struct nvkm_ltc *ltc = nvkm_ltc(subdev); | |
101 | return ltc->func->oneinit(ltc); | |
102 | } | |
103 | ||
104 | static int | |
105 | nvkm_ltc_init(struct nvkm_subdev *subdev) | |
106 | { | |
107 | struct nvkm_ltc *ltc = nvkm_ltc(subdev); | |
108 | int i; | |
f38fdb6a | 109 | |
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110 | for (i = ltc->zbc_min; i <= ltc->zbc_max; i++) { |
111 | ltc->func->zbc_clear_color(ltc, i, ltc->zbc_color[i]); | |
112 | ltc->func->zbc_clear_depth(ltc, i, ltc->zbc_depth[i]); | |
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113 | } |
114 | ||
70bc7182 | 115 | ltc->func->init(ltc); |
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116 | return 0; |
117 | } | |
118 | ||
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119 | static void * |
120 | nvkm_ltc_dtor(struct nvkm_subdev *subdev) | |
121 | { | |
122 | struct nvkm_ltc *ltc = nvkm_ltc(subdev); | |
bd447053 | 123 | nvkm_memory_unref(<c->tag_ram); |
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124 | return ltc; |
125 | } | |
126 | ||
127 | static const struct nvkm_subdev_func | |
128 | nvkm_ltc = { | |
129 | .dtor = nvkm_ltc_dtor, | |
130 | .oneinit = nvkm_ltc_oneinit, | |
131 | .init = nvkm_ltc_init, | |
132 | .intr = nvkm_ltc_intr, | |
133 | }; | |
134 | ||
95484b57 | 135 | int |
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136 | nvkm_ltc_new_(const struct nvkm_ltc_func *func, struct nvkm_device *device, |
137 | int index, struct nvkm_ltc **pltc) | |
95484b57 | 138 | { |
70bc7182 | 139 | struct nvkm_ltc *ltc; |
95484b57 | 140 | |
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141 | if (!(ltc = *pltc = kzalloc(sizeof(*ltc), GFP_KERNEL))) |
142 | return -ENOMEM; | |
143 | ||
56d06fa2 | 144 | nvkm_subdev_ctor(&nvkm_ltc, device, index, <c->subdev); |
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145 | ltc->func = func; |
146 | ltc->zbc_min = 1; /* reserve 0 for disabled */ | |
147 | ltc->zbc_max = min(func->zbc, NVKM_LTC_MAX_ZBC_CNT) - 1; | |
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148 | return 0; |
149 | } |