/*
   * Marvell MBUS common definitions.
   *
   * Copyright (C) 2008 Marvell Semiconductor
   *
   * This file is licensed under the terms of the GNU General Public
   * License version 2.  This program is licensed "as is" without any
   * warranty of any kind, whether express or implied.
   */
  
  #ifndef __LINUX_MBUS_H
  #define __LINUX_MBUS_H
  
  struct resource;
  
  struct mbus_dram_target_info {
  	/*
  	 * The 4-bit MBUS target ID of the DRAM controller.
  	 */
  	u8		mbus_dram_target_id;
  
  	/*
  	 * The base address, size, and MBUS attribute ID for each
  	 * of the possible DRAM chip selects.  Peripherals are
  	 * required to support at least 4 decode windows.
  	 */
  	int		num_cs;
  	struct mbus_dram_window {
  		u8	cs_index;
  		u8	mbus_attr;
  		u32	base;
  		u32	size;
  	} cs[4];
  };
  
  struct mvebu_mbus_state {
  	void __iomem *mbuswins_base;
  	void __iomem *sdramwins_base;
  	struct dentry *debugfs_root;
  	struct dentry *debugfs_sdram;
  	struct dentry *debugfs_devs;
  	const struct mvebu_mbus_soc_data *soc;
  	int hw_io_coherency;
  };
  
  /* Flags for PCI/PCIe address decoding regions */
  #define MVEBU_MBUS_PCI_IO  0x1
  #define MVEBU_MBUS_PCI_MEM 0x2
  #define MVEBU_MBUS_PCI_WA  0x3
  
  /*
   * Magic value that explicits that we don't need a remapping-capable
   * address decoding window.
   */
  #define MVEBU_MBUS_NO_REMAP (0xffffffff)
  
  /* Maximum size of a mbus window name */
  #define MVEBU_MBUS_MAX_WINNAME_SZ 32
  
  const struct mbus_dram_target_info *mvebu_mbus_dram_info(void);
  void mvebu_mbus_get_pcie_mem_aperture(struct resource *res);
  void mvebu_mbus_get_pcie_io_aperture(struct resource *res);
  int mvebu_mbus_add_window_remap_by_id(unsigned int target,
  				      unsigned int attribute,
  				      phys_addr_t base, size_t size,
  				      phys_addr_t remap);
  int mvebu_mbus_add_window_by_id(unsigned int target, unsigned int attribute,
  				phys_addr_t base, size_t size);
  int mvebu_mbus_del_window(phys_addr_t base, size_t size);
  int mbus_dt_setup_win(struct mvebu_mbus_state *mbus,
  		      u32 base, u32 size, u8 target, u8 attr);
  
  #endif /* __LINUX_MBUS_H */