subdev/bus/nv31.c

0001 /*
0002  * Copyright 2012 Nouveau Community
0003  *
0004  * Permission is hereby granted, free of charge, to any person obtaining a
0005  * copy of this software and associated documentation files (the "Software"),
0006  * to deal in the Software without restriction, including without limitation
0007  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
0008  * and/or sell copies of the Software, and to permit persons to whom the
0009  * Software is furnished to do so, subject to the following conditions:
0010  *
0011  * The above copyright notice and this permission notice shall be included in
0012  * all copies or substantial portions of the Software.
0013  *
0014  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
0015  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
0016  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
0017  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
0018  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
0019  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
0020  * OTHER DEALINGS IN THE SOFTWARE.
0021  *
0022  * Authors: Martin Peres <martin.peres@labri.fr>
0023  *          Ben Skeggs
0024  */
0025 #include "priv.h"
0026
0027 #include <subdev/gpio.h>
0028 #include <subdev/therm.h>
0029
0030 static void
0031 nv31_bus_intr(struct nvkm_bus *bus)
0032 {
0033     struct nvkm_subdev *subdev = &bus->subdev;
0034     struct nvkm_device *device = subdev->device;
0035     u32 stat = nvkm_rd32(device, 0x001100) & nvkm_rd32(device, 0x001140);
0036     u32 gpio = nvkm_rd32(device, 0x001104) & nvkm_rd32(device, 0x001144);
0037
0038     if (gpio) {
0039         struct nvkm_gpio *gpio = device->gpio;
0040         if (gpio)
0041             nvkm_subdev_intr(&gpio->subdev);
0042     }
0043
0044     if (stat & 0x00000008) {  /* NV41- */
0045         u32 addr = nvkm_rd32(device, 0x009084);
0046         u32 data = nvkm_rd32(device, 0x009088);
0047
0048         nvkm_error_ratelimited(subdev, "MMIO %s of %08x FAULT at %06x\n",
0049                        (addr & 0x00000002) ? "write" : "read", data,
0050                        (addr & 0x00fffffc));
0051
0052         stat &= ~0x00000008;
0053         nvkm_wr32(device, 0x001100, 0x00000008);
0054     }
0055
0056     if (stat & 0x00070000) {
0057         struct nvkm_therm *therm = device->therm;
0058         if (therm)
0059             nvkm_subdev_intr(&therm->subdev);
0060         stat &= ~0x00070000;
0061         nvkm_wr32(device, 0x001100, 0x00070000);
0062     }
0063
0064     if (stat) {
0065         nvkm_error(subdev, "intr %08x\n", stat);
0066         nvkm_mask(device, 0x001140, stat, 0x00000000);
0067     }
0068 }
0069
0070 static void
0071 nv31_bus_init(struct nvkm_bus *bus)
0072 {
0073     struct nvkm_device *device = bus->subdev.device;
0074     nvkm_wr32(device, 0x001100, 0xffffffff);
0075     nvkm_wr32(device, 0x001140, 0x00070008);
0076 }
0077
0078 static const struct nvkm_bus_func
0079 nv31_bus = {
0080     .init = nv31_bus_init,
0081     .intr = nv31_bus_intr,
0082 };
0083
0084 int
0085 nv31_bus_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
0086          struct nvkm_bus **pbus)
0087 {
0088     return nvkm_bus_new_(&nv31_bus, device, type, inst, pbus);
0089 }