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