1 /* 2 * Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved. 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 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 19 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 20 * DEALINGS IN THE SOFTWARE. 21 */ 22 #include "priv.h" 23 24 #include <subdev/mc.h> 25 26 void 27 nvkm_falcon_load_imem(struct nvkm_falcon *falcon, void *data, u32 start, 28 u32 size, u16 tag, u8 port, bool secure) 29 { 30 if (secure && !falcon->secret) { 31 nvkm_warn(falcon->user, 32 "writing with secure tag on a non-secure falcon!\n"); 33 return; 34 } 35 36 falcon->func->load_imem(falcon, data, start, size, tag, port, 37 secure); 38 } 39 40 void 41 nvkm_falcon_load_dmem(struct nvkm_falcon *falcon, void *data, u32 start, 42 u32 size, u8 port) 43 { 44 falcon->func->load_dmem(falcon, data, start, size, port); 45 } 46 47 void 48 nvkm_falcon_read_dmem(struct nvkm_falcon *falcon, u32 start, u32 size, u8 port, 49 void *data) 50 { 51 falcon->func->read_dmem(falcon, start, size, port, data); 52 } 53 54 void 55 nvkm_falcon_bind_context(struct nvkm_falcon *falcon, struct nvkm_gpuobj *inst) 56 { 57 if (!falcon->func->bind_context) { 58 nvkm_error(falcon->user, 59 "Context binding not supported on this falcon!\n"); 60 return; 61 } 62 63 falcon->func->bind_context(falcon, inst); 64 } 65 66 void 67 nvkm_falcon_set_start_addr(struct nvkm_falcon *falcon, u32 start_addr) 68 { 69 falcon->func->set_start_addr(falcon, start_addr); 70 } 71 72 void 73 nvkm_falcon_start(struct nvkm_falcon *falcon) 74 { 75 falcon->func->start(falcon); 76 } 77 78 int 79 nvkm_falcon_enable(struct nvkm_falcon *falcon) 80 { 81 struct nvkm_device *device = falcon->owner->device; 82 enum nvkm_devidx id = falcon->owner->index; 83 int ret; 84 85 nvkm_mc_enable(device, id); 86 ret = falcon->func->enable(falcon); 87 if (ret) { 88 nvkm_mc_disable(device, id); 89 return ret; 90 } 91 92 return 0; 93 } 94 95 void 96 nvkm_falcon_disable(struct nvkm_falcon *falcon) 97 { 98 struct nvkm_device *device = falcon->owner->device; 99 enum nvkm_devidx id = falcon->owner->index; 100 101 /* already disabled, return or wait_idle will timeout */ 102 if (!nvkm_mc_enabled(device, id)) 103 return; 104 105 falcon->func->disable(falcon); 106 107 nvkm_mc_disable(device, id); 108 } 109 110 int 111 nvkm_falcon_reset(struct nvkm_falcon *falcon) 112 { 113 nvkm_falcon_disable(falcon); 114 return nvkm_falcon_enable(falcon); 115 } 116 117 int 118 nvkm_falcon_wait_for_halt(struct nvkm_falcon *falcon, u32 ms) 119 { 120 return falcon->func->wait_for_halt(falcon, ms); 121 } 122 123 int 124 nvkm_falcon_clear_interrupt(struct nvkm_falcon *falcon, u32 mask) 125 { 126 return falcon->func->clear_interrupt(falcon, mask); 127 } 128 129 void 130 nvkm_falcon_put(struct nvkm_falcon *falcon, const struct nvkm_subdev *user) 131 { 132 mutex_lock(&falcon->mutex); 133 if (falcon->user == user) { 134 nvkm_debug(falcon->user, "released %s falcon\n", falcon->name); 135 falcon->user = NULL; 136 } 137 mutex_unlock(&falcon->mutex); 138 } 139 140 int 141 nvkm_falcon_get(struct nvkm_falcon *falcon, const struct nvkm_subdev *user) 142 { 143 mutex_lock(&falcon->mutex); 144 if (falcon->user) { 145 nvkm_error(user, "%s falcon already acquired by %s!\n", 146 falcon->name, nvkm_subdev_name[falcon->user->index]); 147 mutex_unlock(&falcon->mutex); 148 return -EBUSY; 149 } 150 151 nvkm_debug(user, "acquired %s falcon\n", falcon->name); 152 falcon->user = user; 153 mutex_unlock(&falcon->mutex); 154 return 0; 155 } 156 157 void 158 nvkm_falcon_ctor(const struct nvkm_falcon_func *func, 159 struct nvkm_subdev *subdev, const char *name, u32 addr, 160 struct nvkm_falcon *falcon) 161 { 162 u32 reg; 163 164 falcon->func = func; 165 falcon->owner = subdev; 166 falcon->name = name; 167 falcon->addr = addr; 168 mutex_init(&falcon->mutex); 169 170 reg = nvkm_falcon_rd32(falcon, 0x12c); 171 falcon->version = reg & 0xf; 172 falcon->secret = (reg >> 4) & 0x3; 173 falcon->code.ports = (reg >> 8) & 0xf; 174 falcon->data.ports = (reg >> 12) & 0xf; 175 176 reg = nvkm_falcon_rd32(falcon, 0x108); 177 falcon->code.limit = (reg & 0x1ff) << 8; 178 falcon->data.limit = (reg & 0x3fe00) >> 1; 179 180 reg = nvkm_falcon_rd32(falcon, 0xc08); 181 falcon->debug = (reg >> 20) & 0x1; 182 } 183 184 void 185 nvkm_falcon_del(struct nvkm_falcon **pfalcon) 186 { 187 if (*pfalcon) { 188 kfree(*pfalcon); 189 *pfalcon = NULL; 190 } 191 } 192