LXR uboot/include/linux/mbus.h

   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         * 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
  36struct 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
  60const struct mbus_dram_target_info *mvebu_mbus_dram_info(void);
  61void mvebu_mbus_get_pcie_mem_aperture(struct resource *res);
  62void mvebu_mbus_get_pcie_io_aperture(struct resource *res);
  63int 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);
  67int mvebu_mbus_add_window_by_id(unsigned int target, unsigned int attribute,
  68                                phys_addr_t base, size_t size);
  69int mvebu_mbus_del_window(phys_addr_t base, size_t size);
  70int mbus_dt_setup_win(struct mvebu_mbus_state *mbus,
  71                      u32 base, u32 size, u8 target, u8 attr);
  72
  73#endif /* __LINUX_MBUS_H */
  74