Home | History | Annotate | Line # | Download | only in bus 
      1 /*	$NetBSD: nouveau_nvkm_subdev_bus_gf100.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 (at) labri.fr>
     25  *          Ben Skeggs
     26  */
     27 #include <sys/cdefs.h>
     28 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_bus_gf100.c,v 1.3 2021/12/18 23:45:38 riastradh Exp $");
     29 
     30 #include "priv.h"
     31 
     32 static void
     33 gf100_bus_intr(struct nvkm_bus *bus)
     34 {
     35 	struct nvkm_subdev *subdev = &bus->subdev;
     36 	struct nvkm_device *device = subdev->device;
     37 	u32 stat = nvkm_rd32(device, 0x001100) & nvkm_rd32(device, 0x001140);
     38 
     39 	if (stat & 0x0000000e) {
     40 		u32 addr = nvkm_rd32(device, 0x009084);
     41 		u32 data = nvkm_rd32(device, 0x009088);
     42 
     43 		nvkm_error(subdev,
     44 			   "MMIO %s of %08x FAULT at %06x [ %s%s%s]\n",
     45 			   (addr & 0x00000002) ? "write" : "read", data,
     46 			   (addr & 0x00fffffc),
     47 			   (stat & 0x00000002) ? "!ENGINE " : "",
     48 			   (stat & 0x00000004) ? "IBUS " : "",
     49 			   (stat & 0x00000008) ? "TIMEOUT " : "");
     50 
     51 		nvkm_wr32(device, 0x009084, 0x00000000);
     52 		nvkm_wr32(device, 0x001100, (stat & 0x0000000e));
     53 		stat &= ~0x0000000e;
     54 	}
     55 
     56 	if (stat) {
     57 		nvkm_error(subdev, "intr %08x\n", stat);
     58 		nvkm_mask(device, 0x001140, stat, 0x00000000);
     59 	}
     60 }
     61 
     62 static void
     63 gf100_bus_init(struct nvkm_bus *bus)
     64 {
     65 	struct nvkm_device *device = bus->subdev.device;
     66 	nvkm_wr32(device, 0x001100, 0xffffffff);
     67 	nvkm_wr32(device, 0x001140, 0x0000000e);
     68 }
     69 
     70 static const struct nvkm_bus_func
     71 gf100_bus = {
     72 	.init = gf100_bus_init,
     73 	.intr = gf100_bus_intr,
     74 };
     75 
     76 int
     77 gf100_bus_new(struct nvkm_device *device, int index, struct nvkm_bus **pbus)
     78 {
     79 	return nvkm_bus_new_(&gf100_bus, device, index, pbus);
     80 }
     81