2 * Copyright 2014 Red Hat Inc.
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:
11 * The above copyright notice and this permission notice shall be included in
12 * all copies or substantial portions of the Software.
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.
22 * Authors: Ben Skeggs <bskeggs@redhat.com>
26 #include <subdev/fb.h>
29 nvkm_ltc_tags_alloc(struct nvkm_ltc *ltc, u32 n, struct nvkm_mm_node **pnode)
31 int ret = nvkm_mm_head(<c->tags, 0, 1, n, n, 1, pnode);
38 nvkm_ltc_tags_free(struct nvkm_ltc *ltc, struct nvkm_mm_node **pnode)
40 nvkm_mm_free(<c->tags, pnode);
44 nvkm_ltc_tags_clear(struct nvkm_ltc *ltc, u32 first, u32 count)
46 const u32 limit = first + count - 1;
48 BUG_ON((first > limit) || (limit >= ltc->num_tags));
50 ltc->func->cbc_clear(ltc, first, limit);
51 ltc->func->cbc_wait(ltc);
55 nvkm_ltc_zbc_color_get(struct nvkm_ltc *ltc, int index, const u32 color[4])
57 memcpy(ltc->zbc_color[index], color, sizeof(ltc->zbc_color[index]));
58 ltc->func->zbc_clear_color(ltc, index, color);
63 nvkm_ltc_zbc_depth_get(struct nvkm_ltc *ltc, int index, const u32 depth)
65 ltc->zbc_depth[index] = depth;
66 ltc->func->zbc_clear_depth(ltc, index, depth);
71 nvkm_ltc_intr(struct nvkm_subdev *subdev)
73 struct nvkm_ltc *ltc = nvkm_ltc(subdev);
78 nvkm_ltc_oneinit(struct nvkm_subdev *subdev)
80 struct nvkm_ltc *ltc = nvkm_ltc(subdev);
81 return ltc->func->oneinit(ltc);
85 nvkm_ltc_init(struct nvkm_subdev *subdev)
87 struct nvkm_ltc *ltc = nvkm_ltc(subdev);
90 for (i = ltc->zbc_min; i <= ltc->zbc_max; i++) {
91 ltc->func->zbc_clear_color(ltc, i, ltc->zbc_color[i]);
92 ltc->func->zbc_clear_depth(ltc, i, ltc->zbc_depth[i]);
100 nvkm_ltc_dtor(struct nvkm_subdev *subdev)
102 struct nvkm_ltc *ltc = nvkm_ltc(subdev);
103 struct nvkm_ram *ram = ltc->subdev.device->fb->ram;
104 nvkm_mm_fini(<c->tags);
106 nvkm_mm_free(&ram->vram, <c->tag_ram);
110 static const struct nvkm_subdev_func
112 .dtor = nvkm_ltc_dtor,
113 .oneinit = nvkm_ltc_oneinit,
114 .init = nvkm_ltc_init,
115 .intr = nvkm_ltc_intr,
119 nvkm_ltc_new_(const struct nvkm_ltc_func *func, struct nvkm_device *device,
120 int index, struct nvkm_ltc **pltc)
122 struct nvkm_ltc *ltc;
124 if (!(ltc = *pltc = kzalloc(sizeof(*ltc), GFP_KERNEL)))
127 nvkm_subdev_ctor(&nvkm_ltc, device, index, 0, <c->subdev);
129 ltc->zbc_min = 1; /* reserve 0 for disabled */
130 ltc->zbc_max = min(func->zbc, NVKM_LTC_MAX_ZBC_CNT) - 1;