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abc848c1 LB |
1 | /* |
2 | * Marvell MBUS common definitions. | |
3 | * | |
4 | * Copyright (C) 2008 Marvell Semiconductor | |
5 | * | |
6 | * This file is licensed under the terms of the GNU General Public | |
7 | * License version 2. This program is licensed "as is" without any | |
8 | * warranty of any kind, whether express or implied. | |
9 | */ | |
10 | ||
11 | #ifndef __LINUX_MBUS_H | |
12 | #define __LINUX_MBUS_H | |
13 | ||
14 | struct mbus_dram_target_info | |
15 | { | |
16 | /* | |
17 | * The 4-bit MBUS target ID of the DRAM controller. | |
18 | */ | |
19 | u8 mbus_dram_target_id; | |
20 | ||
21 | /* | |
22 | * The base address, size, and MBUS attribute ID for each | |
23 | * of the possible DRAM chip selects. Peripherals are | |
24 | * required to support at least 4 decode windows. | |
25 | */ | |
26 | int num_cs; | |
27 | struct mbus_dram_window { | |
28 | u8 cs_index; | |
29 | u8 mbus_attr; | |
30 | u32 base; | |
31 | u32 size; | |
32 | } cs[4]; | |
33 | }; | |
34 | ||
fddddb52 TP |
35 | /* Flags for PCI/PCIe address decoding regions */ |
36 | #define MVEBU_MBUS_PCI_IO 0x1 | |
37 | #define MVEBU_MBUS_PCI_MEM 0x2 | |
38 | #define MVEBU_MBUS_PCI_WA 0x3 | |
39 | ||
40 | /* | |
41 | * Magic value that explicits that we don't need a remapping-capable | |
42 | * address decoding window. | |
43 | */ | |
44 | #define MVEBU_MBUS_NO_REMAP (0xffffffff) | |
45 | ||
95b80e0a TP |
46 | /* Maximum size of a mbus window name */ |
47 | #define MVEBU_MBUS_MAX_WINNAME_SZ 32 | |
48 | ||
63a9332b AL |
49 | /* |
50 | * The Marvell mbus is to be found only on SOCs from the Orion family | |
51 | * at the moment. Provide a dummy stub for other architectures. | |
52 | */ | |
53 | #ifdef CONFIG_PLAT_ORION | |
54 | extern const struct mbus_dram_target_info *mv_mbus_dram_info(void); | |
55 | #else | |
56 | static inline const struct mbus_dram_target_info *mv_mbus_dram_info(void) | |
57 | { | |
58 | return NULL; | |
59 | } | |
60 | #endif | |
fddddb52 TP |
61 | |
62 | int mvebu_mbus_add_window_remap_flags(const char *devname, phys_addr_t base, | |
63 | size_t size, phys_addr_t remap, | |
64 | unsigned int flags); | |
65 | int mvebu_mbus_add_window(const char *devname, phys_addr_t base, | |
66 | size_t size); | |
67 | int mvebu_mbus_del_window(phys_addr_t base, size_t size); | |
68 | int mvebu_mbus_init(const char *soc, phys_addr_t mbus_phys_base, | |
69 | size_t mbus_size, phys_addr_t sdram_phys_base, | |
70 | size_t sdram_size); | |
71 | ||
72 | #endif /* __LINUX_MBUS_H */ |