| /* |
| * Copyright 2014 Red Hat Inc. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a |
| * copy of this software and associated documentation files (the "Software"), |
| * to deal in the Software without restriction, including without limitation |
| * the rights to use, copy, modify, merge, publish, distribute, sublicense, |
| * and/or sell copies of the Software, and to permit persons to whom the |
| * Software is furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR |
| * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, |
| * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR |
| * OTHER DEALINGS IN THE SOFTWARE. |
| * |
| * Authors: Ben Skeggs <bskeggs@redhat.com> |
| */ |
| #include "priv.h" |
| |
| #include <subdev/fb.h> |
| |
| int |
| nvkm_ltc_tags_alloc(struct nvkm_ltc *ltc, u32 n, struct nvkm_mm_node **pnode) |
| { |
| int ret = nvkm_mm_head(<c->tags, 0, 1, n, n, 1, pnode); |
| if (ret) |
| *pnode = NULL; |
| return ret; |
| } |
| |
| void |
| nvkm_ltc_tags_free(struct nvkm_ltc *ltc, struct nvkm_mm_node **pnode) |
| { |
| nvkm_mm_free(<c->tags, pnode); |
| } |
| |
| void |
| nvkm_ltc_tags_clear(struct nvkm_ltc *ltc, u32 first, u32 count) |
| { |
| const u32 limit = first + count - 1; |
| |
| BUG_ON((first > limit) || (limit >= ltc->num_tags)); |
| |
| ltc->func->cbc_clear(ltc, first, limit); |
| ltc->func->cbc_wait(ltc); |
| } |
| |
| int |
| nvkm_ltc_zbc_color_get(struct nvkm_ltc *ltc, int index, const u32 color[4]) |
| { |
| memcpy(ltc->zbc_color[index], color, sizeof(ltc->zbc_color[index])); |
| ltc->func->zbc_clear_color(ltc, index, color); |
| return index; |
| } |
| |
| int |
| nvkm_ltc_zbc_depth_get(struct nvkm_ltc *ltc, int index, const u32 depth) |
| { |
| ltc->zbc_depth[index] = depth; |
| ltc->func->zbc_clear_depth(ltc, index, depth); |
| return index; |
| } |
| |
| static void |
| nvkm_ltc_intr(struct nvkm_subdev *subdev) |
| { |
| struct nvkm_ltc *ltc = nvkm_ltc(subdev); |
| ltc->func->intr(ltc); |
| } |
| |
| static int |
| nvkm_ltc_oneinit(struct nvkm_subdev *subdev) |
| { |
| struct nvkm_ltc *ltc = nvkm_ltc(subdev); |
| return ltc->func->oneinit(ltc); |
| } |
| |
| static int |
| nvkm_ltc_init(struct nvkm_subdev *subdev) |
| { |
| struct nvkm_ltc *ltc = nvkm_ltc(subdev); |
| int i; |
| |
| for (i = ltc->zbc_min; i <= ltc->zbc_max; i++) { |
| ltc->func->zbc_clear_color(ltc, i, ltc->zbc_color[i]); |
| ltc->func->zbc_clear_depth(ltc, i, ltc->zbc_depth[i]); |
| } |
| |
| ltc->func->init(ltc); |
| return 0; |
| } |
| |
| static void * |
| nvkm_ltc_dtor(struct nvkm_subdev *subdev) |
| { |
| struct nvkm_ltc *ltc = nvkm_ltc(subdev); |
| struct nvkm_ram *ram = ltc->subdev.device->fb->ram; |
| nvkm_mm_fini(<c->tags); |
| if (ram) |
| nvkm_mm_free(&ram->vram, <c->tag_ram); |
| return ltc; |
| } |
| |
| static const struct nvkm_subdev_func |
| nvkm_ltc = { |
| .dtor = nvkm_ltc_dtor, |
| .oneinit = nvkm_ltc_oneinit, |
| .init = nvkm_ltc_init, |
| .intr = nvkm_ltc_intr, |
| }; |
| |
| int |
| nvkm_ltc_new_(const struct nvkm_ltc_func *func, struct nvkm_device *device, |
| int index, struct nvkm_ltc **pltc) |
| { |
| struct nvkm_ltc *ltc; |
| |
| if (!(ltc = *pltc = kzalloc(sizeof(*ltc), GFP_KERNEL))) |
| return -ENOMEM; |
| |
| nvkm_subdev_ctor(&nvkm_ltc, device, index, 0, <c->subdev); |
| ltc->func = func; |
| ltc->zbc_min = 1; /* reserve 0 for disabled */ |
| ltc->zbc_max = min(func->zbc, NVKM_LTC_MAX_ZBC_CNT) - 1; |
| return 0; |
| } |