1 /* 2 * Copyright 2012 Nouveau Community 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: Martin Peres <martin.peres@labri.fr> 23 * Ben Skeggs 24 */ 25 #include "nv04.h" 26 27 #include <subdev/gpio.h> 28 29 static void 30 nv04_bus_intr(struct nvkm_subdev *subdev) 31 { 32 struct nvkm_device *device = subdev->device; 33 u32 stat = nvkm_rd32(device, 0x001100) & nvkm_rd32(device, 0x001140); 34 35 if (stat & 0x00000001) { 36 nvkm_error(subdev, "BUS ERROR\n"); 37 stat &= ~0x00000001; 38 nvkm_wr32(device, 0x001100, 0x00000001); 39 } 40 41 if (stat & 0x00000110) { 42 struct nvkm_gpio *gpio = device->gpio; 43 if (gpio) 44 nvkm_subdev_intr(&gpio->subdev); 45 stat &= ~0x00000110; 46 nvkm_wr32(device, 0x001100, 0x00000110); 47 } 48 49 if (stat) { 50 nvkm_error(subdev, "intr %08x\n", stat); 51 nvkm_mask(device, 0x001140, stat, 0x00000000); 52 } 53 } 54 55 static int 56 nv04_bus_init(struct nvkm_object *object) 57 { 58 struct nvkm_bus *bus = (void *)object; 59 struct nvkm_device *device = bus->subdev.device; 60 61 nvkm_wr32(device, 0x001100, 0xffffffff); 62 nvkm_wr32(device, 0x001140, 0x00000111); 63 64 return nvkm_bus_init(bus); 65 } 66 67 int 68 nv04_bus_ctor(struct nvkm_object *parent, struct nvkm_object *engine, 69 struct nvkm_oclass *oclass, void *data, u32 size, 70 struct nvkm_object **pobject) 71 { 72 struct nv04_bus_impl *impl = (void *)oclass; 73 struct nvkm_bus *bus; 74 int ret; 75 76 ret = nvkm_bus_create(parent, engine, oclass, &bus); 77 *pobject = nv_object(bus); 78 if (ret) 79 return ret; 80 81 nv_subdev(bus)->intr = impl->intr; 82 bus->hwsq_exec = impl->hwsq_exec; 83 bus->hwsq_size = impl->hwsq_size; 84 return 0; 85 } 86 87 struct nvkm_oclass * 88 nv04_bus_oclass = &(struct nv04_bus_impl) { 89 .base.handle = NV_SUBDEV(BUS, 0x04), 90 .base.ofuncs = &(struct nvkm_ofuncs) { 91 .ctor = nv04_bus_ctor, 92 .dtor = _nvkm_bus_dtor, 93 .init = nv04_bus_init, 94 .fini = _nvkm_bus_fini, 95 }, 96 .intr = nv04_bus_intr, 97 }.base; 98