24c04977fa
These mbus functions are ported from Barebox. The Barebox version is ported from Linux. These functions will be first used by the upcoming Armada XP support. Later other Marvell SoC's will be adopted to use these functions as well (Kirkwood, Orion). Signed-off-by: Stefan Roese <sr@denx.de> Tested-by: Luka Perkov <luka@openwrt.org>
74 lines
2.0 KiB
C
74 lines
2.0 KiB
C
/*
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* Marvell MBUS common definitions.
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*
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* Copyright (C) 2008 Marvell Semiconductor
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*
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* This file is licensed under the terms of the GNU General Public
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* License version 2. This program is licensed "as is" without any
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* warranty of any kind, whether express or implied.
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*/
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#ifndef __LINUX_MBUS_H
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#define __LINUX_MBUS_H
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struct resource;
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struct mbus_dram_target_info {
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/*
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* The 4-bit MBUS target ID of the DRAM controller.
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*/
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u8 mbus_dram_target_id;
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/*
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* The base address, size, and MBUS attribute ID for each
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* of the possible DRAM chip selects. Peripherals are
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* required to support at least 4 decode windows.
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*/
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int num_cs;
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struct mbus_dram_window {
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u8 cs_index;
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u8 mbus_attr;
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u32 base;
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u32 size;
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} cs[4];
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};
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struct mvebu_mbus_state {
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void __iomem *mbuswins_base;
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void __iomem *sdramwins_base;
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struct dentry *debugfs_root;
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struct dentry *debugfs_sdram;
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struct dentry *debugfs_devs;
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const struct mvebu_mbus_soc_data *soc;
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int hw_io_coherency;
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};
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/* Flags for PCI/PCIe address decoding regions */
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#define MVEBU_MBUS_PCI_IO 0x1
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#define MVEBU_MBUS_PCI_MEM 0x2
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#define MVEBU_MBUS_PCI_WA 0x3
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/*
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* Magic value that explicits that we don't need a remapping-capable
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* address decoding window.
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*/
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#define MVEBU_MBUS_NO_REMAP (0xffffffff)
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/* Maximum size of a mbus window name */
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#define MVEBU_MBUS_MAX_WINNAME_SZ 32
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const struct mbus_dram_target_info *mvebu_mbus_dram_info(void);
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void mvebu_mbus_get_pcie_mem_aperture(struct resource *res);
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void mvebu_mbus_get_pcie_io_aperture(struct resource *res);
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int mvebu_mbus_add_window_remap_by_id(unsigned int target,
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unsigned int attribute,
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phys_addr_t base, size_t size,
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phys_addr_t remap);
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int mvebu_mbus_add_window_by_id(unsigned int target, unsigned int attribute,
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phys_addr_t base, size_t size);
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int mvebu_mbus_del_window(phys_addr_t base, size_t size);
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int mbus_dt_setup_win(struct mvebu_mbus_state *mbus,
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u32 base, u32 size, u8 target, u8 attr);
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#endif /* __LINUX_MBUS_H */
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