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
14struct resource;
15
16struct mbus_dram_target_info
17{
18	/*
19	 * The 4-bit MBUS target ID of the DRAM controller.
20	 */
21	u8		mbus_dram_target_id;
22
23	/*
24	 * The base address, size, and MBUS attribute ID for each
25	 * of the possible DRAM chip selects.  Peripherals are
26	 * required to support at least 4 decode windows.
27	 */
28	int		num_cs;
29	struct mbus_dram_window {
30		u8	cs_index;
31		u8	mbus_attr;
32		u32	base;
33		u32	size;
34	} cs[4];
35};
36
37/* Flags for PCI/PCIe address decoding regions */
38#define MVEBU_MBUS_PCI_IO  0x1
39#define MVEBU_MBUS_PCI_MEM 0x2
40#define MVEBU_MBUS_PCI_WA  0x3
41
42/*
43 * Magic value that explicits that we don't need a remapping-capable
44 * address decoding window.
45 */
46#define MVEBU_MBUS_NO_REMAP (0xffffffff)
47
48/* Maximum size of a mbus window name */
49#define MVEBU_MBUS_MAX_WINNAME_SZ 32
50
51/*
52 * The Marvell mbus is to be found only on SOCs from the Orion family
53 * at the moment.  Provide a dummy stub for other architectures.
54 */
55#ifdef CONFIG_PLAT_ORION
56extern const struct mbus_dram_target_info *mv_mbus_dram_info(void);
57extern const struct mbus_dram_target_info *mv_mbus_dram_info_nooverlap(void);
58#else
59static inline const struct mbus_dram_target_info *mv_mbus_dram_info(void)
60{
61	return NULL;
62}
63static inline const struct mbus_dram_target_info *mv_mbus_dram_info_nooverlap(void)
64{
65	return NULL;
66}
67#endif
68
69int mvebu_mbus_save_cpu_target(u32 *store_addr);
70void mvebu_mbus_get_pcie_mem_aperture(struct resource *res);
71void mvebu_mbus_get_pcie_io_aperture(struct resource *res);
72int mvebu_mbus_add_window_remap_by_id(unsigned int target,
73				      unsigned int attribute,
74				      phys_addr_t base, size_t size,
75				      phys_addr_t remap);
76int mvebu_mbus_add_window_by_id(unsigned int target, unsigned int attribute,
77				phys_addr_t base, size_t size);
78int mvebu_mbus_del_window(phys_addr_t base, size_t size);
79int mvebu_mbus_init(const char *soc, phys_addr_t mbus_phys_base,
80		    size_t mbus_size, phys_addr_t sdram_phys_base,
81		    size_t sdram_size);
82int mvebu_mbus_dt_init(bool is_coherent);
83
84#endif /* __LINUX_MBUS_H */
85