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 <subdev/fb/regsnv04.h>
27
28#define NV04_PFB_DEBUG_0					0x00100080
29#	define NV04_PFB_DEBUG_0_PAGE_MODE			0x00000001
30#	define NV04_PFB_DEBUG_0_REFRESH_OFF			0x00000010
31#	define NV04_PFB_DEBUG_0_REFRESH_COUNTX64		0x00003f00
32#	define NV04_PFB_DEBUG_0_REFRESH_SLOW_CLK		0x00004000
33#	define NV04_PFB_DEBUG_0_SAFE_MODE			0x00008000
34#	define NV04_PFB_DEBUG_0_ALOM_ENABLE			0x00010000
35#	define NV04_PFB_DEBUG_0_CASOE				0x00100000
36#	define NV04_PFB_DEBUG_0_CKE_INVERT			0x10000000
37#	define NV04_PFB_DEBUG_0_REFINC				0x20000000
38#	define NV04_PFB_DEBUG_0_SAVE_POWER_OFF			0x40000000
39#define NV04_PFB_CFG0						0x00100200
40#	define NV04_PFB_CFG0_SCRAMBLE				0x20000000
41#define NV04_PFB_CFG1						0x00100204
42#define NV04_PFB_SCRAMBLE(i)                         (0x00100400 + 4 * (i))
43
44#define NV10_PFB_REFCTRL					0x00100210
45#	define NV10_PFB_REFCTRL_VALID_1				(1 << 31)
46
47static inline struct io_mapping *
48fbmem_init(struct nvkm_device *dev)
49{
50	return io_mapping_create_wc(dev->func->resource_addr(dev, 1),
51				    dev->func->resource_size(dev, 1));
52}
53
54static inline void
55fbmem_fini(struct io_mapping *fb)
56{
57	io_mapping_free(fb);
58}
59
60static inline u32
61fbmem_peek(struct io_mapping *fb, u32 off)
62{
63	u8 __iomem *p = io_mapping_map_atomic_wc(fb, off & PAGE_MASK);
64	u32 val = ioread32(p + (off & ~PAGE_MASK));
65	io_mapping_unmap_atomic(p);
66	return val;
67}
68
69static inline void
70fbmem_poke(struct io_mapping *fb, u32 off, u32 val)
71{
72	u8 __iomem *p = io_mapping_map_atomic_wc(fb, off & PAGE_MASK);
73	iowrite32(val, p + (off & ~PAGE_MASK));
74	wmb();
75	io_mapping_unmap_atomic(p);
76}
77
78static inline bool
79fbmem_readback(struct io_mapping *fb, u32 off, u32 val)
80{
81	fbmem_poke(fb, off, val);
82	return val == fbmem_peek(fb, off);
83}