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      1 /*	$NetBSD: nouveau_nvkm_subdev_bus_nv50.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_nv50.c,v 1.3 2021/12/18 23:45:38 riastradh Exp $");
     29 
     30 #include "priv.h"
     31 
     32 #include <subdev/therm.h>
     33 #include <subdev/timer.h>
     34 
     35 static int
     36 nv50_bus_hwsq_exec(struct nvkm_bus *bus, u32 *data, u32 size)
     37 {
     38 	struct nvkm_device *device = bus->subdev.device;
     39 	int i;
     40 
     41 	nvkm_mask(device, 0x001098, 0x00000008, 0x00000000);
     42 	nvkm_wr32(device, 0x001304, 0x00000000);
     43 	for (i = 0; i < size; i++)
     44 		nvkm_wr32(device, 0x001400 + (i * 4), data[i]);
     45 	nvkm_mask(device, 0x001098, 0x00000018, 0x00000018);
     46 	nvkm_wr32(device, 0x00130c, 0x00000003);
     47 
     48 	if (nvkm_msec(device, 2000,
     49 		if (!(nvkm_rd32(device, 0x001308) & 0x00000100))
     50 			break;
     51 	) < 0)
     52 		return -ETIMEDOUT;
     53 
     54 	return 0;
     55 }
     56 
     57 void
     58 nv50_bus_intr(struct nvkm_bus *bus)
     59 {
     60 	struct nvkm_subdev *subdev = &bus->subdev;
     61 	struct nvkm_device *device = subdev->device;
     62 	u32 stat = nvkm_rd32(device, 0x001100) & nvkm_rd32(device, 0x001140);
     63 
     64 	if (stat & 0x00000008) {
     65 		u32 addr = nvkm_rd32(device, 0x009084);
     66 		u32 data = nvkm_rd32(device, 0x009088);
     67 
     68 		nvkm_error(subdev, "MMIO %s of %08x FAULT at %06x\n",
     69 			   (addr & 0x00000002) ? "write" : "read", data,
     70 			   (addr & 0x00fffffc));
     71 
     72 		stat &= ~0x00000008;
     73 		nvkm_wr32(device, 0x001100, 0x00000008);
     74 	}
     75 
     76 	if (stat & 0x00010000) {
     77 		struct nvkm_therm *therm = device->therm;
     78 		if (therm)
     79 			nvkm_subdev_intr(&therm->subdev);
     80 		stat &= ~0x00010000;
     81 		nvkm_wr32(device, 0x001100, 0x00010000);
     82 	}
     83 
     84 	if (stat) {
     85 		nvkm_error(subdev, "intr %08x\n", stat);
     86 		nvkm_mask(device, 0x001140, stat, 0);
     87 	}
     88 }
     89 
     90 void
     91 nv50_bus_init(struct nvkm_bus *bus)
     92 {
     93 	struct nvkm_device *device = bus->subdev.device;
     94 	nvkm_wr32(device, 0x001100, 0xffffffff);
     95 	nvkm_wr32(device, 0x001140, 0x00010008);
     96 }
     97 
     98 static const struct nvkm_bus_func
     99 nv50_bus = {
    100 	.init = nv50_bus_init,
    101 	.intr = nv50_bus_intr,
    102 	.hwsq_exec = nv50_bus_hwsq_exec,
    103 	.hwsq_size = 64,
    104 };
    105 
    106 int
    107 nv50_bus_new(struct nvkm_device *device, int index, struct nvkm_bus **pbus)
    108 {
    109 	return nvkm_bus_new_(&nv50_bus, device, index, pbus);
    110 }
    111