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 */ 24 #include "priv.h" 25 26 #include <core/memory.h> 27 28 void 29 nvkm_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 42 int 43 nvkm_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 50 int 51 nvkm_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 58 int 59 nvkm_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 66 void 67 nvkm_ltc_invalidate(struct nvkm_ltc *ltc) 68 { 69 if (ltc->func->invalidate) 70 ltc->func->invalidate(ltc); 71 } 72 73 void 74 nvkm_ltc_flush(struct nvkm_ltc *ltc) 75 { 76 if (ltc->func->flush) 77 ltc->func->flush(ltc); 78 } 79 80 static void 81 nvkm_ltc_intr(struct nvkm_subdev *subdev) 82 { 83 struct nvkm_ltc *ltc = nvkm_ltc(subdev); 84 ltc->func->intr(ltc); 85 } 86 87 static int 88 nvkm_ltc_oneinit(struct nvkm_subdev *subdev) 89 { 90 struct nvkm_ltc *ltc = nvkm_ltc(subdev); 91 return ltc->func->oneinit(ltc); 92 } 93 94 static int 95 nvkm_ltc_init(struct nvkm_subdev *subdev) 96 { 97 struct nvkm_ltc *ltc = nvkm_ltc(subdev); 98 int i; 99 100 for (i = ltc->zbc_min; i <= ltc->zbc_max; i++) { 101 ltc->func->zbc_clear_color(ltc, i, ltc->zbc_color[i]); 102 ltc->func->zbc_clear_depth(ltc, i, ltc->zbc_depth[i]); 103 if (ltc->func->zbc_clear_stencil) 104 ltc->func->zbc_clear_stencil(ltc, i, ltc->zbc_stencil[i]); 105 } 106 107 ltc->func->init(ltc); 108 return 0; 109 } 110 111 static void * 112 nvkm_ltc_dtor(struct nvkm_subdev *subdev) 113 { 114 struct nvkm_ltc *ltc = nvkm_ltc(subdev); 115 nvkm_memory_unref(<c->tag_ram); 116 mutex_destroy(<c->mutex); 117 return ltc; 118 } 119 120 static const struct nvkm_subdev_func 121 nvkm_ltc = { 122 .dtor = nvkm_ltc_dtor, 123 .oneinit = nvkm_ltc_oneinit, 124 .init = nvkm_ltc_init, 125 .intr = nvkm_ltc_intr, 126 }; 127 128 int 129 nvkm_ltc_new_(const struct nvkm_ltc_func *func, struct nvkm_device *device, 130 enum nvkm_subdev_type type, int inst, struct nvkm_ltc **pltc) 131 { 132 struct nvkm_ltc *ltc; 133 134 if (!(ltc = *pltc = kzalloc(sizeof(*ltc), GFP_KERNEL))) 135 return -ENOMEM; 136 137 nvkm_subdev_ctor(&nvkm_ltc, device, type, inst, <c->subdev); 138 ltc->func = func; 139 mutex_init(<c->mutex); 140 ltc->zbc_min = 1; /* reserve 0 for disabled */ 141 ltc->zbc_max = min(func->zbc, NVKM_LTC_MAX_ZBC_CNT) - 1; 142 return 0; 143 } 144