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24c04977 SR |
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 resource; | |
15 | ||
16 | struct mbus_dram_target_info { | |
17 | /* | |
18 | * The 4-bit MBUS target ID of the DRAM controller. | |
19 | */ | |
20 | u8 mbus_dram_target_id; | |
21 | ||
22 | /* | |
23 | * The base address, size, and MBUS attribute ID for each | |
24 | * of the possible DRAM chip selects. Peripherals are | |
25 | * required to support at least 4 decode windows. | |
26 | */ | |
27 | int num_cs; | |
28 | struct mbus_dram_window { | |
29 | u8 cs_index; | |
30 | u8 mbus_attr; | |
31 | u32 base; | |
32 | u32 size; | |
33 | } cs[4]; | |
34 | }; | |
35 | ||
36 | struct mvebu_mbus_state { | |
37 | void __iomem *mbuswins_base; | |
38 | void __iomem *sdramwins_base; | |
39 | struct dentry *debugfs_root; | |
40 | struct dentry *debugfs_sdram; | |
41 | struct dentry *debugfs_devs; | |
42 | const struct mvebu_mbus_soc_data *soc; | |
43 | int hw_io_coherency; | |
44 | }; | |
45 | ||
46 | /* Flags for PCI/PCIe address decoding regions */ | |
47 | #define MVEBU_MBUS_PCI_IO 0x1 | |
48 | #define MVEBU_MBUS_PCI_MEM 0x2 | |
49 | #define MVEBU_MBUS_PCI_WA 0x3 | |
50 | ||
51 | /* | |
52 | * Magic value that explicits that we don't need a remapping-capable | |
53 | * address decoding window. | |
54 | */ | |
55 | #define MVEBU_MBUS_NO_REMAP (0xffffffff) | |
56 | ||
57 | /* Maximum size of a mbus window name */ | |
58 | #define MVEBU_MBUS_MAX_WINNAME_SZ 32 | |
59 | ||
60 | const struct mbus_dram_target_info *mvebu_mbus_dram_info(void); | |
61 | void mvebu_mbus_get_pcie_mem_aperture(struct resource *res); | |
62 | void mvebu_mbus_get_pcie_io_aperture(struct resource *res); | |
63 | int mvebu_mbus_add_window_remap_by_id(unsigned int target, | |
64 | unsigned int attribute, | |
65 | phys_addr_t base, size_t size, | |
66 | phys_addr_t remap); | |
67 | int mvebu_mbus_add_window_by_id(unsigned int target, unsigned int attribute, | |
68 | phys_addr_t base, size_t size); | |
69 | int mvebu_mbus_del_window(phys_addr_t base, size_t size); | |
70 | int mbus_dt_setup_win(struct mvebu_mbus_state *mbus, | |
71 | u32 base, u32 size, u8 target, u8 attr); | |
72 | ||
73 | #endif /* __LINUX_MBUS_H */ |