nv50.c

  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/therm.h>
 28#include <subdev/timer.h>
 29
 30static int
 31nv50_bus_hwsq_exec(struct nvkm_bus *bus, u32 *data, u32 size)
 32{
 33	struct nvkm_device *device = bus->subdev.device;
 34	int i;
 35
 36	nvkm_mask(device, 0x001098, 0x00000008, 0x00000000);
 37	nvkm_wr32(device, 0x001304, 0x00000000);
 38	for (i = 0; i < size; i++)
 39		nvkm_wr32(device, 0x001400 + (i * 4), data[i]);
 40	nvkm_mask(device, 0x001098, 0x00000018, 0x00000018);
 41	nvkm_wr32(device, 0x00130c, 0x00000003);
 42
 43	if (nvkm_msec(device, 2000,
 44		if (!(nvkm_rd32(device, 0x001308) & 0x00000100))
 45			break;
 46	) < 0)
 47		return -ETIMEDOUT;
 48
 49	return 0;
 50}
 51
 52void
 53nv50_bus_intr(struct nvkm_bus *bus)
 54{
 55	struct nvkm_subdev *subdev = &bus->subdev;
 56	struct nvkm_device *device = subdev->device;
 57	u32 stat = nvkm_rd32(device, 0x001100) & nvkm_rd32(device, 0x001140);
 58
 59	if (stat & 0x00000008) {
 60		u32 addr = nvkm_rd32(device, 0x009084);
 61		u32 data = nvkm_rd32(device, 0x009088);
 62
 63		nvkm_error_ratelimited(subdev, "MMIO %s of %08x FAULT at %06x\n",
 64				       (addr & 0x00000002) ? "write" : "read", data,
 65				       (addr & 0x00fffffc));
 66
 67		stat &= ~0x00000008;
 68		nvkm_wr32(device, 0x001100, 0x00000008);
 69	}
 70
 71	if (stat & 0x00010000) {
 72		struct nvkm_therm *therm = device->therm;
 73		if (therm)
 74			nvkm_subdev_intr(&therm->subdev);
 75		stat &= ~0x00010000;
 76		nvkm_wr32(device, 0x001100, 0x00010000);
 77	}
 78
 79	if (stat) {
 80		nvkm_error(subdev, "intr %08x\n", stat);
 81		nvkm_mask(device, 0x001140, stat, 0);
 82	}
 83}
 84
 85void
 86nv50_bus_init(struct nvkm_bus *bus)
 87{
 88	struct nvkm_device *device = bus->subdev.device;
 89	nvkm_wr32(device, 0x001100, 0xffffffff);
 90	nvkm_wr32(device, 0x001140, 0x00010008);
 91}
 92
 93static const struct nvkm_bus_func
 94nv50_bus = {
 95	.init = nv50_bus_init,
 96	.intr = nv50_bus_intr,
 97	.hwsq_exec = nv50_bus_hwsq_exec,
 98	.hwsq_size = 64,
 99};
100
101int
102nv50_bus_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
103	     struct nvkm_bus **pbus)
104{
105	return nvkm_bus_new_(&nv50_bus, device, type, inst, pbus);
106}