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
27#include <core/device.h>
28
29#define NV04_PFB_BOOT_0 0x00100000
30# define NV04_PFB_BOOT_0_RAM_AMOUNT 0x00000003
31# define NV04_PFB_BOOT_0_RAM_AMOUNT_32MB 0x00000000
32# define NV04_PFB_BOOT_0_RAM_AMOUNT_4MB 0x00000001
33# define NV04_PFB_BOOT_0_RAM_AMOUNT_8MB 0x00000002
34# define NV04_PFB_BOOT_0_RAM_AMOUNT_16MB 0x00000003
35# define NV04_PFB_BOOT_0_RAM_WIDTH_128 0x00000004
36# define NV04_PFB_BOOT_0_RAM_TYPE 0x00000028
37# define NV04_PFB_BOOT_0_RAM_TYPE_SGRAM_8MBIT 0x00000000
38# define NV04_PFB_BOOT_0_RAM_TYPE_SGRAM_16MBIT 0x00000008
39# define NV04_PFB_BOOT_0_RAM_TYPE_SGRAM_16MBIT_4BANK 0x00000010
40# define NV04_PFB_BOOT_0_RAM_TYPE_SDRAM_16MBIT 0x00000018
41# define NV04_PFB_BOOT_0_RAM_TYPE_SDRAM_64MBIT 0x00000020
42# define NV04_PFB_BOOT_0_RAM_TYPE_SDRAM_64MBITX16 0x00000028
43# define NV04_PFB_BOOT_0_UMA_ENABLE 0x00000100
44# define NV04_PFB_BOOT_0_UMA_SIZE 0x0000f000
45#define NV04_PFB_DEBUG_0 0x00100080
46# define NV04_PFB_DEBUG_0_PAGE_MODE 0x00000001
47# define NV04_PFB_DEBUG_0_REFRESH_OFF 0x00000010
48# define NV04_PFB_DEBUG_0_REFRESH_COUNTX64 0x00003f00
49# define NV04_PFB_DEBUG_0_REFRESH_SLOW_CLK 0x00004000
50# define NV04_PFB_DEBUG_0_SAFE_MODE 0x00008000
51# define NV04_PFB_DEBUG_0_ALOM_ENABLE 0x00010000
52# define NV04_PFB_DEBUG_0_CASOE 0x00100000
53# define NV04_PFB_DEBUG_0_CKE_INVERT 0x10000000
54# define NV04_PFB_DEBUG_0_REFINC 0x20000000
55# define NV04_PFB_DEBUG_0_SAVE_POWER_OFF 0x40000000
56#define NV04_PFB_CFG0 0x00100200
57# define NV04_PFB_CFG0_SCRAMBLE 0x20000000
58#define NV04_PFB_CFG1 0x00100204
59#define NV04_PFB_SCRAMBLE(i) (0x00100400 + 4 * (i))
60
61#define NV10_PFB_REFCTRL 0x00100210
62# define NV10_PFB_REFCTRL_VALID_1 (1 << 31)
63
64static inline struct io_mapping *
65fbmem_init(struct nouveau_device *dev)
66{
67#ifdef __NetBSD__
68 return bus_space_io_mapping_create_wc(nv_device_resource_tag(dev, 1),
69 nv_device_resource_start(dev, 1),
70 nv_device_resource_len(dev, 1));
71#else
72 return io_mapping_create_wc(nv_device_resource_start(dev, 1),
73 nv_device_resource_len(dev, 1));
74#endif
75}
76
77static inline void
78fbmem_fini(struct io_mapping *fb)
79{
80 io_mapping_free(fb);
81}
82
83#ifdef __NetBSD__
84/*
85 * XXX Consider using bus_space_reserve/map instead. Don't want to use
86 * bus_space_map because presumably that will eat too much KVA.
87 */
88
89# define __iomem volatile
90# define ioread32 fake_ioread32
91# define iowrite32 fake_iowrite32
92
93static inline uint32_t
94fake_ioread32(const void __iomem *p)
95{
96 const uint32_t v = *(const uint32_t __iomem *)p;
97
98 membar_consumer();
99
100 return v;
101}
102
103static inline void
104fake_iowrite32(uint32_t v, void __iomem *p)
105{
106
107 membar_producer();
108 *(uint32_t __iomem *)p = v;
109}
110#endif
111
112static inline u32
113fbmem_peek(struct io_mapping *fb, u32 off)
114{
115 u8 __iomem *p = io_mapping_map_atomic_wc(fb, off & PAGE_MASK);
116 u32 val = ioread32(p + (off & ~PAGE_MASK));
117#ifdef __NetBSD__
118 io_mapping_unmap_atomic(fb, __UNVOLATILE(p));
119#else
120 io_mapping_unmap_atomic(p);
121#endif
122 return val;
123}
124
125static inline void
126fbmem_poke(struct io_mapping *fb, u32 off, u32 val)
127{
128 u8 __iomem *p = io_mapping_map_atomic_wc(fb, off & PAGE_MASK);
129 iowrite32(val, p + (off & ~PAGE_MASK));
130#ifdef __NetBSD__
131 membar_producer();
132 io_mapping_unmap_atomic(fb, __UNVOLATILE(p));
133#else
134 wmb();
135 io_mapping_unmap_atomic(p);
136#endif
137}
138
139static inline bool
140fbmem_readback(struct io_mapping *fb, u32 off, u32 val)
141{
142 fbmem_poke(fb, off, val);
143 return val == fbmem_peek(fb, off);
144}
145
146#ifdef __NetBSD__
147# undef __iomem
148# undef ioread32
149# undef iowrite32
150#endif
151