cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
Log | Files | Refs | README | LICENSE | sfeed.txt

nv04.c (2347B)

      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 "priv.h"
     26
     27#include <subdev/gpio.h>
     28
     29static void
     30nv04_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 void
     57nv04_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_func
     65nv04_bus = {
     66	.init = nv04_bus_init,
     67	.intr = nv04_bus_intr,
     68};
     69
     70int
     71nv04_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}