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1/*2 * Copyright 2012 Nouveau Community3 *4 * Permission is hereby granted, free of charge, to any person obtaining a5 * copy of this software and associated documentation files (the "Software"),6 * to deal in the Software without restriction, including without limitation7 * the rights to use, copy, modify, merge, publish, distribute, sublicense,8 * and/or sell copies of the Software, and to permit persons to whom the9 * Software is furnished to do so, subject to the following conditions:10 *11 * The above copyright notice and this permission notice shall be included in12 * all copies or substantial portions of the Software.13 *14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL17 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR18 * 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 OR20 * OTHER DEALINGS IN THE SOFTWARE.21 *22 * Authors: Martin Peres <martin.peres@labri.fr>23 * Ben Skeggs24 */25#include "priv.h"26 27#include <subdev/gpio.h>28 29static void30nv04_bus_intr(struct nvkm_bus *bus)31{32 struct nvkm_subdev *subdev = &bus->subdev;33 struct nvkm_device *device = subdev->device;34 u32 stat = nvkm_rd32(device, 0x001100) & nvkm_rd32(device, 0x001140);35 36 if (stat & 0x00000001) {37 nvkm_error(subdev, "BUS ERROR\n");38 stat &= ~0x00000001;39 nvkm_wr32(device, 0x001100, 0x00000001);40 }41 42 if (stat & 0x00000110) {43 struct nvkm_gpio *gpio = device->gpio;44 if (gpio)45 nvkm_subdev_intr(&gpio->subdev);46 stat &= ~0x00000110;47 nvkm_wr32(device, 0x001100, 0x00000110);48 }49 50 if (stat) {51 nvkm_error(subdev, "intr %08x\n", stat);52 nvkm_mask(device, 0x001140, stat, 0x00000000);53 }54}55 56static void57nv04_bus_init(struct nvkm_bus *bus)58{59 struct nvkm_device *device = bus->subdev.device;60 nvkm_wr32(device, 0x001100, 0xffffffff);61 nvkm_wr32(device, 0x001140, 0x00000111);62}63 64static const struct nvkm_bus_func65nv04_bus = {66 .init = nv04_bus_init,67 .intr = nv04_bus_intr,68};69 70int71nv04_bus_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,72 struct nvkm_bus **pbus)73{74 return nvkm_bus_new_(&nv04_bus, device, type, inst, pbus);75}76