xref: /linux/drivers/gpu/drm/nouveau/nvkm/subdev/fb/nv44.c (revision d0034a7a4ac7fae708146ac0059b9c47a1543f0d)
1 /*
2  * Copyright (C) 2010 Francisco Jerez.
3  * All Rights Reserved.
4  *
5  * Permission is hereby granted, free of charge, to any person obtaining
6  * a copy of this software and associated documentation files (the
7  * "Software"), to deal in the Software without restriction, including
8  * without limitation the rights to use, copy, modify, merge, publish,
9  * distribute, sublicense, and/or sell copies of the Software, and to
10  * permit persons to whom the Software is furnished to do so, subject to
11  * the following conditions:
12  *
13  * The above copyright notice and this permission notice (including the
14  * next paragraph) shall be included in all copies or substantial
15  * portions of the Software.
16  *
17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18  * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
20  * IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
21  * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
22  * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
23  * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24  *
25  */
26 #include "priv.h"
27 #include "ram.h"
28 
29 static void
nv44_fb_tile_init(struct nvkm_fb * fb,int i,u32 addr,u32 size,u32 pitch,u32 flags,struct nvkm_fb_tile * tile)30 nv44_fb_tile_init(struct nvkm_fb *fb, int i, u32 addr, u32 size, u32 pitch,
31 		  u32 flags, struct nvkm_fb_tile *tile)
32 {
33 	tile->addr  = 0x00000001; /* mode = vram */
34 	tile->addr |= addr;
35 	tile->limit = max(1u, addr + size) - 1;
36 	tile->pitch = pitch;
37 }
38 
39 void
nv44_fb_tile_prog(struct nvkm_fb * fb,int i,struct nvkm_fb_tile * tile)40 nv44_fb_tile_prog(struct nvkm_fb *fb, int i, struct nvkm_fb_tile *tile)
41 {
42 	struct nvkm_device *device = fb->subdev.device;
43 	nvkm_wr32(device, 0x100604 + (i * 0x10), tile->limit);
44 	nvkm_wr32(device, 0x100608 + (i * 0x10), tile->pitch);
45 	nvkm_wr32(device, 0x100600 + (i * 0x10), tile->addr);
46 	nvkm_rd32(device, 0x100600 + (i * 0x10));
47 }
48 
49 void
nv44_fb_init(struct nvkm_fb * fb)50 nv44_fb_init(struct nvkm_fb *fb)
51 {
52 	struct nvkm_device *device = fb->subdev.device;
53 	nvkm_wr32(device, 0x100850, 0x80000000);
54 	nvkm_wr32(device, 0x100800, 0x00000001);
55 }
56 
57 static const struct nvkm_fb_func
58 nv44_fb = {
59 	.init = nv44_fb_init,
60 	.tile.regions = 12,
61 	.tile.init = nv44_fb_tile_init,
62 	.tile.fini = nv20_fb_tile_fini,
63 	.tile.prog = nv44_fb_tile_prog,
64 	.ram_new = nv44_ram_new,
65 };
66 
67 int
nv44_fb_new(struct nvkm_device * device,enum nvkm_subdev_type type,int inst,struct nvkm_fb ** pfb)68 nv44_fb_new(struct nvkm_device *device, enum nvkm_subdev_type type, int inst, struct nvkm_fb **pfb)
69 {
70 	return nvkm_fb_new_(&nv44_fb, device, type, inst, pfb);
71 }
72