xref: /openbmc/linux/drivers/gpu/drm/nouveau/nvkm/subdev/bus/gf100.c (revision 4f2c0a4acffbec01079c28f839422e64ddeff004)
15f8824deSBen Skeggs /*
25f8824deSBen Skeggs  * Copyright 2012 Nouveau Community
35f8824deSBen Skeggs  *
45f8824deSBen Skeggs  * Permission is hereby granted, free of charge, to any person obtaining a
55f8824deSBen Skeggs  * copy of this software and associated documentation files (the "Software"),
65f8824deSBen Skeggs  * to deal in the Software without restriction, including without limitation
75f8824deSBen Skeggs  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
85f8824deSBen Skeggs  * and/or sell copies of the Software, and to permit persons to whom the
95f8824deSBen Skeggs  * Software is furnished to do so, subject to the following conditions:
105f8824deSBen Skeggs  *
115f8824deSBen Skeggs  * The above copyright notice and this permission notice shall be included in
125f8824deSBen Skeggs  * all copies or substantial portions of the Software.
135f8824deSBen Skeggs  *
145f8824deSBen Skeggs  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
155f8824deSBen Skeggs  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
165f8824deSBen Skeggs  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
175f8824deSBen Skeggs  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
185f8824deSBen Skeggs  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
195f8824deSBen Skeggs  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
205f8824deSBen Skeggs  * OTHER DEALINGS IN THE SOFTWARE.
215f8824deSBen Skeggs  *
225f8824deSBen Skeggs  * Authors: Martin Peres <martin.peres@labri.fr>
235f8824deSBen Skeggs  *          Ben Skeggs
245f8824deSBen Skeggs  */
25bb23f9d7SBen Skeggs #include "priv.h"
265f8824deSBen Skeggs 
275f8824deSBen Skeggs static void
gf100_bus_intr(struct nvkm_bus * bus)28bb23f9d7SBen Skeggs gf100_bus_intr(struct nvkm_bus *bus)
295f8824deSBen Skeggs {
30bb23f9d7SBen Skeggs 	struct nvkm_subdev *subdev = &bus->subdev;
31a699a85aSBen Skeggs 	struct nvkm_device *device = subdev->device;
3214caba44SBen Skeggs 	u32 stat = nvkm_rd32(device, 0x001100) & nvkm_rd32(device, 0x001140);
335f8824deSBen Skeggs 
345f8824deSBen Skeggs 	if (stat & 0x0000000e) {
3514caba44SBen Skeggs 		u32 addr = nvkm_rd32(device, 0x009084);
3614caba44SBen Skeggs 		u32 data = nvkm_rd32(device, 0x009088);
375f8824deSBen Skeggs 
38*9887bda0SLyude Paul 		nvkm_error_ratelimited(subdev,
39a699a85aSBen Skeggs 				       "MMIO %s of %08x FAULT at %06x [ %s%s%s]\n",
405f8824deSBen Skeggs 				       (addr & 0x00000002) ? "write" : "read", data,
415f8824deSBen Skeggs 				       (addr & 0x00fffffc),
425f8824deSBen Skeggs 				       (stat & 0x00000002) ? "!ENGINE " : "",
4326fbb4c8SBen Skeggs 				       (stat & 0x00000004) ? "PRIVRING " : "",
445f8824deSBen Skeggs 				       (stat & 0x00000008) ? "TIMEOUT " : "");
455f8824deSBen Skeggs 
4614caba44SBen Skeggs 		nvkm_wr32(device, 0x009084, 0x00000000);
4714caba44SBen Skeggs 		nvkm_wr32(device, 0x001100, (stat & 0x0000000e));
485f8824deSBen Skeggs 		stat &= ~0x0000000e;
495f8824deSBen Skeggs 	}
505f8824deSBen Skeggs 
515f8824deSBen Skeggs 	if (stat) {
52a699a85aSBen Skeggs 		nvkm_error(subdev, "intr %08x\n", stat);
5314caba44SBen Skeggs 		nvkm_mask(device, 0x001140, stat, 0x00000000);
545f8824deSBen Skeggs 	}
555f8824deSBen Skeggs }
565f8824deSBen Skeggs 
57bb23f9d7SBen Skeggs static void
gf100_bus_init(struct nvkm_bus * bus)58bb23f9d7SBen Skeggs gf100_bus_init(struct nvkm_bus *bus)
595f8824deSBen Skeggs {
6014caba44SBen Skeggs 	struct nvkm_device *device = bus->subdev.device;
6114caba44SBen Skeggs 	nvkm_wr32(device, 0x001100, 0xffffffff);
6214caba44SBen Skeggs 	nvkm_wr32(device, 0x001140, 0x0000000e);
635f8824deSBen Skeggs }
645f8824deSBen Skeggs 
65bb23f9d7SBen Skeggs static const struct nvkm_bus_func
66bb23f9d7SBen Skeggs gf100_bus = {
675f8824deSBen Skeggs 	.init = gf100_bus_init,
685f8824deSBen Skeggs 	.intr = gf100_bus_intr,
69bb23f9d7SBen Skeggs };
70bb23f9d7SBen Skeggs 
71bb23f9d7SBen Skeggs int
gf100_bus_new(struct nvkm_device * device,enum nvkm_subdev_type type,int inst,struct nvkm_bus ** pbus)72d37766e5SBen Skeggs gf100_bus_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst,
73d37766e5SBen Skeggs 	      struct nvkm_bus **pbus)
74bb23f9d7SBen Skeggs {
75d37766e5SBen Skeggs 	return nvkm_bus_new_(&gf100_bus, device, type, inst, pbus);
76bb23f9d7SBen Skeggs }
77