1 /* $NetBSD: nouveau_nvkm_subdev_fb_nv04.c,v 1.3 2021/12/18 23:45:39 riastradh Exp $ */
2
3 /*
4 * Copyright 2012 Red Hat Inc.
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: Ben Skeggs
25 */
26 #include <sys/cdefs.h>
27 __KERNEL_RCSID(0, "$NetBSD: nouveau_nvkm_subdev_fb_nv04.c,v 1.3 2021/12/18 23:45:39 riastradh Exp $");
28
29 #include "priv.h"
30 #include "ram.h"
31 #include "regsnv04.h"
32
33 static void
nv04_fb_init(struct nvkm_fb * fb)34 nv04_fb_init(struct nvkm_fb *fb)
35 {
36 struct nvkm_device *device = fb->subdev.device;
37
38 /* This is what the DDX did for NV_ARCH_04, but a mmio-trace shows
39 * nvidia reading PFB_CFG_0, then writing back its original value.
40 * (which was 0x701114 in this case)
41 */
42 nvkm_wr32(device, NV04_PFB_CFG0, 0x1114);
43 }
44
45 static const struct nvkm_fb_func
46 nv04_fb = {
47 .init = nv04_fb_init,
48 .ram_new = nv04_ram_new,
49 };
50
51 int
nv04_fb_new(struct nvkm_device * device,int index,struct nvkm_fb ** pfb)52 nv04_fb_new(struct nvkm_device *device, int index, struct nvkm_fb **pfb)
53 {
54 return nvkm_fb_new_(&nv04_fb, device, index, pfb);
55 }
56