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1/*2 * Copyright 2014 Red Hat Inc.3 *4 * Permission is hereby granted, free of charge, to any person obtaining a5 * copy of this software and associated documentation files (the "Software"),6 * to deal in the Software without restriction, including without limitation7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,8 * and/or sell copies of the Software, and to permit persons to whom the9 * Software is furnished to do so, subject to the following conditions:10 *11 * The above copyright notice and this permission notice shall be included in12 * all copies or substantial portions of the Software.13 *14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR18 * 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 OR20 * OTHER DEALINGS IN THE SOFTWARE.21 *22 * Authors: Ben Skeggs <bskeggs@redhat.com>23 */24#include "priv.h"25 26#include <core/memory.h>27 28void29nvkm_ltc_tags_clear(struct nvkm_device *device, u32 first, u32 count)30{31 struct nvkm_ltc *ltc = device->ltc;32 const u32 limit = first + count - 1;33 34 BUG_ON((first > limit) || (limit >= ltc->num_tags));35 36 mutex_lock(<c->mutex);37 ltc->func->cbc_clear(ltc, first, limit);38 ltc->func->cbc_wait(ltc);39 mutex_unlock(<c->mutex);40}41 42int43nvkm_ltc_zbc_color_get(struct nvkm_ltc *ltc, int index, const u32 color[4])44{45 memcpy(ltc->zbc_color[index], color, sizeof(ltc->zbc_color[index]));46 ltc->func->zbc_clear_color(ltc, index, color);47 return index;48}49 50int51nvkm_ltc_zbc_depth_get(struct nvkm_ltc *ltc, int index, const u32 depth)52{53 ltc->zbc_depth[index] = depth;54 ltc->func->zbc_clear_depth(ltc, index, depth);55 return index;56}57 58int59nvkm_ltc_zbc_stencil_get(struct nvkm_ltc *ltc, int index, const u32 stencil)60{61 ltc->zbc_stencil[index] = stencil;62 ltc->func->zbc_clear_stencil(ltc, index, stencil);63 return index;64}65 66void67nvkm_ltc_invalidate(struct nvkm_ltc *ltc)68{69 if (ltc->func->invalidate)70 ltc->func->invalidate(ltc);71}72 73void74nvkm_ltc_flush(struct nvkm_ltc *ltc)75{76 if (ltc->func->flush)77 ltc->func->flush(ltc);78}79 80static void81nvkm_ltc_intr(struct nvkm_subdev *subdev)82{83 struct nvkm_ltc *ltc = nvkm_ltc(subdev);84 ltc->func->intr(ltc);85}86 87static int88nvkm_ltc_oneinit(struct nvkm_subdev *subdev)89{90 struct nvkm_ltc *ltc = nvkm_ltc(subdev);91 return ltc->func->oneinit(ltc);92}93 94static int95nvkm_ltc_init(struct nvkm_subdev *subdev)96{97 struct nvkm_ltc *ltc = nvkm_ltc(subdev);98 int i;99 100 for (i = ltc->zbc_color_min; i <= ltc->zbc_color_max; i++)101 ltc->func->zbc_clear_color(ltc, i, ltc->zbc_color[i]);102 103 for (i = ltc->zbc_depth_min; i <= ltc->zbc_depth_max; i++) {104 ltc->func->zbc_clear_depth(ltc, i, ltc->zbc_depth[i]);105 if (ltc->func->zbc_clear_stencil)106 ltc->func->zbc_clear_stencil(ltc, i, ltc->zbc_stencil[i]);107 }108 109 ltc->func->init(ltc);110 return 0;111}112 113static void *114nvkm_ltc_dtor(struct nvkm_subdev *subdev)115{116 struct nvkm_ltc *ltc = nvkm_ltc(subdev);117 nvkm_memory_unref(<c->tag_ram);118 mutex_destroy(<c->mutex);119 return ltc;120}121 122static const struct nvkm_subdev_func123nvkm_ltc = {124 .dtor = nvkm_ltc_dtor,125 .oneinit = nvkm_ltc_oneinit,126 .init = nvkm_ltc_init,127 .intr = nvkm_ltc_intr,128};129 130int131nvkm_ltc_new_(const struct nvkm_ltc_func *func, struct nvkm_device *device,132 enum nvkm_subdev_type type, int inst, struct nvkm_ltc **pltc)133{134 struct nvkm_ltc *ltc;135 136 if (!(ltc = *pltc = kzalloc(sizeof(*ltc), GFP_KERNEL)))137 return -ENOMEM;138 139 nvkm_subdev_ctor(&nvkm_ltc, device, type, inst, <c->subdev);140 ltc->func = func;141 mutex_init(<c->mutex);142 ltc->zbc_color_min = 1; /* reserve 0 for disabled */143 ltc->zbc_color_max = min(func->zbc_color, NVKM_LTC_MAX_ZBC_COLOR_CNT) - 1;144 ltc->zbc_depth_min = 1; /* reserve 0 for disabled */145 ltc->zbc_depth_max = min(func->zbc_depth, NVKM_LTC_MAX_ZBC_DEPTH_CNT) - 1;146 return 0;147}148