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