1/* $NetBSD: nouveau_nvkm_subdev_bus_nv04.c,v 1.3 2021/12/18 23:45:38 riastradh Exp $ */ 2 3/* 4 * Copyright 2012 Nouveau Community 5 * 6 * Permission is hereby granted, free of charge, to any person obtaining a 7 * copy of this software and associated documentation files (the "Software"), 8 * to deal in the Software without restriction, including without limitation 9 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 10 * and/or sell copies of the Software, and to permit persons to whom the 11 * Software is furnished to do so, subject to the following conditions: 12 * 13 * The above copyright notice and this permission notice shall be included in 14 * all copies or substantial portions of the Software. 15 * 16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 19 * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR 22 * OTHER DEALINGS IN THE SOFTWARE. 23 * 24 * Authors: Martin Peres <martin.peres@labri.fr> 25 * Ben Skeggs 26 */ 27#include <sys/cdefs.h> 28__KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_bus_nv04.c,v 1.3 2021/12/18 23:45:38 riastradh Exp $"); 29 30#include "priv.h" 31 32#include <subdev/gpio.h> 33 34static void 35nv04_bus_intr(struct nvkm_bus *bus) 36{ 37 struct nvkm_subdev *subdev = &bus->subdev; 38 struct nvkm_device *device = subdev->device; 39 u32 stat = nvkm_rd32(device, 0x001100) & nvkm_rd32(device, 0x001140); 40 41 if (stat & 0x00000001) { 42 nvkm_error(subdev, "BUS ERROR\n"); 43 stat &= ~0x00000001; 44 nvkm_wr32(device, 0x001100, 0x00000001); 45 } 46 47 if (stat & 0x00000110) { 48 struct nvkm_gpio *gpio = device->gpio; 49 if (gpio) 50 nvkm_subdev_intr(&gpio->subdev); 51 stat &= ~0x00000110; 52 nvkm_wr32(device, 0x001100, 0x00000110); 53 } 54 55 if (stat) { 56 nvkm_error(subdev, "intr %08x\n", stat); 57 nvkm_mask(device, 0x001140, stat, 0x00000000); 58 } 59} 60 61static void 62nv04_bus_init(struct nvkm_bus *bus) 63{ 64 struct nvkm_device *device = bus->subdev.device; 65 nvkm_wr32(device, 0x001100, 0xffffffff); 66 nvkm_wr32(device, 0x001140, 0x00000111); 67} 68 69static const struct nvkm_bus_func 70nv04_bus = { 71 .init = nv04_bus_init, 72 .intr = nv04_bus_intr, 73}; 74 75int 76nv04_bus_new(struct nvkm_device *device, int index, struct nvkm_bus **pbus) 77{ 78 return nvkm_bus_new_(&nv04_bus, device, index, pbus); 79} 80