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      1 /*	$NetBSD: nouveau_nvkm_subdev_bus_g94.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_g94.c,v 1.3 2021/12/18 23:45:38 riastradh Exp $");
     29 
     30 #include "priv.h"
     31 
     32 #include <subdev/timer.h>
     33 
     34 static int
     35 g94_bus_hwsq_exec(struct nvkm_bus *bus, u32 *data, u32 size)
     36 {
     37 	struct nvkm_device *device = bus->subdev.device;
     38 	int i;
     39 
     40 	nvkm_mask(device, 0x001098, 0x00000008, 0x00000000);
     41 	nvkm_wr32(device, 0x001304, 0x00000000);
     42 	nvkm_wr32(device, 0x001318, 0x00000000);
     43 	for (i = 0; i < size; i++)
     44 		nvkm_wr32(device, 0x080000 + (i * 4), data[i]);
     45 	nvkm_mask(device, 0x001098, 0x00000018, 0x00000018);
     46 	nvkm_wr32(device, 0x00130c, 0x00000001);
     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 static const struct nvkm_bus_func
     58 g94_bus = {
     59 	.init = nv50_bus_init,
     60 	.intr = nv50_bus_intr,
     61 	.hwsq_exec = g94_bus_hwsq_exec,
     62 	.hwsq_size = 128,
     63 };
     64 
     65 int
     66 g94_bus_new(struct nvkm_device *device, int index, struct nvkm_bus **pbus)
     67 {
     68 	return nvkm_bus_new_(&g94_bus, device, index, pbus);
     69 }
     70