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e47d488935
The Lantiq family of SoCs have a EBU (External Bus Unit). This patch adds the driver that allows us to use the EBU as a PCI controller. In order for PCI to work the EBU is set to endianess swap all the data. In addition we need to make use of SWAP_IO_SPACE for device->host DMA to work. The clock of the PCI works in several modes (internal/external). If this is not configured correctly the SoC will hang. Signed-off-by: John Crispin <blogic@openwrt.org> Signed-off-by: Ralph Hempel <ralph.hempel@lantiq.com> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/2250/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
18 lines
572 B
C
18 lines
572 B
C
/*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 as published
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* by the Free Software Foundation.
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*
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* Copyright (C) 2010 John Crispin <blogic@openwrt.org>
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*/
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#ifndef _LTQ_PCI_H__
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#define _LTQ_PCI_H__
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extern __iomem void *ltq_pci_mapped_cfg;
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extern int ltq_pci_read_config_dword(struct pci_bus *bus,
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unsigned int devfn, int where, int size, u32 *val);
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extern int ltq_pci_write_config_dword(struct pci_bus *bus,
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unsigned int devfn, int where, int size, u32 val);
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#endif
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