1 /* 2 * Copyright 2013 Ilia Mirkin 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 #include <engine/xtensa.h> 23 24 #include <core/gpuobj.h> 25 #include <engine/fifo.h> 26 27 static int 28 nvkm_xtensa_oclass_get(struct nvkm_oclass *oclass, int index) 29 { 30 struct nvkm_xtensa *xtensa = nvkm_xtensa(oclass->engine); 31 int c = 0; 32 33 while (xtensa->func->sclass[c].oclass) { 34 if (c++ == index) { 35 oclass->base = xtensa->func->sclass[index]; 36 return index; 37 } 38 } 39 40 return c; 41 } 42 43 static int 44 nvkm_xtensa_cclass_bind(struct nvkm_object *object, struct nvkm_gpuobj *parent, 45 int align, struct nvkm_gpuobj **pgpuobj) 46 { 47 return nvkm_gpuobj_new(object->engine->subdev.device, 0x10000, align, 48 true, parent, pgpuobj); 49 } 50 51 static const struct nvkm_object_func 52 nvkm_xtensa_cclass = { 53 .bind = nvkm_xtensa_cclass_bind, 54 }; 55 56 static void 57 nvkm_xtensa_intr(struct nvkm_engine *engine) 58 { 59 struct nvkm_xtensa *xtensa = nvkm_xtensa(engine); 60 struct nvkm_subdev *subdev = &xtensa->engine.subdev; 61 struct nvkm_device *device = subdev->device; 62 const u32 base = xtensa->addr; 63 u32 unk104 = nvkm_rd32(device, base + 0xd04); 64 u32 intr = nvkm_rd32(device, base + 0xc20); 65 u32 chan = nvkm_rd32(device, base + 0xc28); 66 u32 unk10c = nvkm_rd32(device, base + 0xd0c); 67 68 if (intr & 0x10) 69 nvkm_warn(subdev, "Watchdog interrupt, engine hung.\n"); 70 nvkm_wr32(device, base + 0xc20, intr); 71 intr = nvkm_rd32(device, base + 0xc20); 72 if (unk104 == 0x10001 && unk10c == 0x200 && chan && !intr) { 73 nvkm_debug(subdev, "Enabling FIFO_CTRL\n"); 74 nvkm_mask(device, xtensa->addr + 0xd94, 0, xtensa->func->fifo_val); 75 } 76 } 77 78 static int 79 nvkm_xtensa_fini(struct nvkm_engine *engine, bool suspend) 80 { 81 struct nvkm_xtensa *xtensa = nvkm_xtensa(engine); 82 struct nvkm_device *device = xtensa->engine.subdev.device; 83 const u32 base = xtensa->addr; 84 85 nvkm_wr32(device, base + 0xd84, 0); /* INTR_EN */ 86 nvkm_wr32(device, base + 0xd94, 0); /* FIFO_CTRL */ 87 88 if (!suspend) 89 nvkm_memory_unref(&xtensa->gpu_fw); 90 return 0; 91 } 92 93 static int 94 nvkm_xtensa_init(struct nvkm_engine *engine) 95 { 96 struct nvkm_xtensa *xtensa = nvkm_xtensa(engine); 97 struct nvkm_subdev *subdev = &xtensa->engine.subdev; 98 struct nvkm_device *device = subdev->device; 99 const u32 base = xtensa->addr; 100 const struct firmware *fw; 101 char name[32]; 102 int i, ret; 103 u64 addr, size; 104 u32 tmp; 105 106 if (!xtensa->gpu_fw) { 107 snprintf(name, sizeof(name), "nouveau/nv84_xuc%03x", 108 xtensa->addr >> 12); 109 110 ret = request_firmware(&fw, name, device->dev); 111 if (ret) { 112 nvkm_warn(subdev, "unable to load firmware %s\n", name); 113 return ret; 114 } 115 116 if (fw->size > 0x40000) { 117 nvkm_warn(subdev, "firmware %s too large\n", name); 118 release_firmware(fw); 119 return -EINVAL; 120 } 121 122 ret = nvkm_memory_new(device, NVKM_MEM_TARGET_INST, 123 0x40000, 0x1000, false, 124 &xtensa->gpu_fw); 125 if (ret) { 126 release_firmware(fw); 127 return ret; 128 } 129 130 nvkm_kmap(xtensa->gpu_fw); 131 for (i = 0; i < fw->size / 4; i++) 132 nvkm_wo32(xtensa->gpu_fw, i * 4, *((u32 *)fw->data + i)); 133 nvkm_done(xtensa->gpu_fw); 134 release_firmware(fw); 135 } 136 137 addr = nvkm_memory_addr(xtensa->gpu_fw); 138 size = nvkm_memory_size(xtensa->gpu_fw); 139 140 nvkm_wr32(device, base + 0xd10, 0x1fffffff); /* ?? */ 141 nvkm_wr32(device, base + 0xd08, 0x0fffffff); /* ?? */ 142 143 nvkm_wr32(device, base + 0xd28, xtensa->func->unkd28); /* ?? */ 144 nvkm_wr32(device, base + 0xc20, 0x3f); /* INTR */ 145 nvkm_wr32(device, base + 0xd84, 0x3f); /* INTR_EN */ 146 147 nvkm_wr32(device, base + 0xcc0, addr >> 8); /* XT_REGION_BASE */ 148 nvkm_wr32(device, base + 0xcc4, 0x1c); /* XT_REGION_SETUP */ 149 nvkm_wr32(device, base + 0xcc8, size >> 8); /* XT_REGION_LIMIT */ 150 151 tmp = nvkm_rd32(device, 0x0); 152 nvkm_wr32(device, base + 0xde0, tmp); /* SCRATCH_H2X */ 153 154 nvkm_wr32(device, base + 0xce8, 0xf); /* XT_REGION_SETUP */ 155 156 nvkm_wr32(device, base + 0xc20, 0x3f); /* INTR */ 157 nvkm_wr32(device, base + 0xd84, 0x3f); /* INTR_EN */ 158 return 0; 159 } 160 161 static void * 162 nvkm_xtensa_dtor(struct nvkm_engine *engine) 163 { 164 return nvkm_xtensa(engine); 165 } 166 167 static const struct nvkm_engine_func 168 nvkm_xtensa = { 169 .dtor = nvkm_xtensa_dtor, 170 .init = nvkm_xtensa_init, 171 .fini = nvkm_xtensa_fini, 172 .intr = nvkm_xtensa_intr, 173 .fifo.sclass = nvkm_xtensa_oclass_get, 174 .cclass = &nvkm_xtensa_cclass, 175 }; 176 177 int 178 nvkm_xtensa_new_(const struct nvkm_xtensa_func *func, struct nvkm_device *device, 179 enum nvkm_subdev_type type, int inst, bool enable, u32 addr, 180 struct nvkm_engine **pengine) 181 { 182 struct nvkm_xtensa *xtensa; 183 184 if (!(xtensa = kzalloc(sizeof(*xtensa), GFP_KERNEL))) 185 return -ENOMEM; 186 xtensa->func = func; 187 xtensa->addr = addr; 188 *pengine = &xtensa->engine; 189 190 return nvkm_engine_ctor(&nvkm_xtensa, device, type, inst, enable, &xtensa->engine); 191 } 192