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      1 /*	$NetBSD: nouveau_nvkm_subdev_bus_nv31.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_nv31.c,v 1.3 2021/12/18 23:45:38 riastradh Exp $");
     29 
     30 #include "priv.h"
     31 
     32 #include <subdev/gpio.h>
     33 #include <subdev/therm.h>
     34 
     35 static void
     36 nv31_bus_intr(struct nvkm_bus *bus)
     37 {
     38 	struct nvkm_subdev *subdev = &bus->subdev;
     39 	struct nvkm_device *device = subdev->device;
     40 	u32 stat = nvkm_rd32(device, 0x001100) & nvkm_rd32(device, 0x001140);
     41 	u32 gpio = nvkm_rd32(device, 0x001104) & nvkm_rd32(device, 0x001144);
     42 
     43 	if (gpio) {
     44 		struct nvkm_gpio *gpio = device->gpio;
     45 		if (gpio)
     46 			nvkm_subdev_intr(&gpio->subdev);
     47 	}
     48 
     49 	if (stat & 0x00000008) {  /* NV41- */
     50 		u32 addr = nvkm_rd32(device, 0x009084);
     51 		u32 data = nvkm_rd32(device, 0x009088);
     52 
     53 		nvkm_error(subdev, "MMIO %s of %08x FAULT at %06x\n",
     54 			   (addr & 0x00000002) ? "write" : "read", data,
     55 			   (addr & 0x00fffffc));
     56 
     57 		stat &= ~0x00000008;
     58 		nvkm_wr32(device, 0x001100, 0x00000008);
     59 	}
     60 
     61 	if (stat & 0x00070000) {
     62 		struct nvkm_therm *therm = device->therm;
     63 		if (therm)
     64 			nvkm_subdev_intr(&therm->subdev);
     65 		stat &= ~0x00070000;
     66 		nvkm_wr32(device, 0x001100, 0x00070000);
     67 	}
     68 
     69 	if (stat) {
     70 		nvkm_error(subdev, "intr %08x\n", stat);
     71 		nvkm_mask(device, 0x001140, stat, 0x00000000);
     72 	}
     73 }
     74 
     75 static void
     76 nv31_bus_init(struct nvkm_bus *bus)
     77 {
     78 	struct nvkm_device *device = bus->subdev.device;
     79 	nvkm_wr32(device, 0x001100, 0xffffffff);
     80 	nvkm_wr32(device, 0x001140, 0x00070008);
     81 }
     82 
     83 static const struct nvkm_bus_func
     84 nv31_bus = {
     85 	.init = nv31_bus_init,
     86 	.intr = nv31_bus_intr,
     87 };
     88 
     89 int
     90 nv31_bus_new(struct nvkm_device *device, int index, struct nvkm_bus **pbus)
     91 {
     92 	return nvkm_bus_new_(&nv31_bus, device, index, pbus);
     93 }
     94