1 /*
2  * Copyright 2012 Red Hat Inc.
3  *
4  * Permission is hereby granted, free of charge, to any person obtaining a
5  * copy of this software and associated documentation files (the "Software"),
6  * to deal in the Software without restriction, including without limitation
7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
8  * and/or sell copies of the Software, and to permit persons to whom the
9  * Software is furnished to do so, subject to the following conditions:
10  *
11  * The above copyright notice and this permission notice shall be included in
12  * all copies or substantial portions of the Software.
13  *
14  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
15  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
16  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
17  * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
18  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
19  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
20  * OTHER DEALINGS IN THE SOFTWARE.
21  *
22  * Authors: Ben Skeggs
23  */
24 #include "priv.h"
25 #include "ram.h"
26 #include "regsnv04.h"
27 
28 bool
29 nv04_fb_memtype_valid(struct nvkm_fb *fb, u32 tile_flags)
30 {
31 	if (!(tile_flags & 0xff00))
32 		return true;
33 	return false;
34 }
35 
36 static void
37 nv04_fb_init(struct nvkm_fb *fb)
38 {
39 	struct nvkm_device *device = fb->subdev.device;
40 
41 	/* This is what the DDX did for NV_ARCH_04, but a mmio-trace shows
42 	 * nvidia reading PFB_CFG_0, then writing back its original value.
43 	 * (which was 0x701114 in this case)
44 	 */
45 	nvkm_wr32(device, NV04_PFB_CFG0, 0x1114);
46 }
47 
48 static const struct nvkm_fb_func
49 nv04_fb = {
50 	.init = nv04_fb_init,
51 	.ram_new = nv04_ram_new,
52 	.memtype_valid = nv04_fb_memtype_valid,
53 };
54 
55 int
56 nv04_fb_new(struct nvkm_device *device, int index, struct nvkm_fb **pfb)
57 {
58 	return nvkm_fb_new_(&nv04_fb, device, index, pfb);
59 }
60