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linux-sg2042/arch/mips/pci/pci-lantiq.h

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MIPS: Lantiq: Add PCI controller support. 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>
2011-03-30 15:27:49 +08:00
/*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*
MIPS: Change my email address The old address is no longer valid. Use the my new one instead. Signed-off-by: John Crispin <john@phrozen.org> Cc: linux-mips@linux-mips.org Patchwork: https://patchwork.linux-mips.org/patch/13201/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2016-05-05 15:57:56 +08:00
* Copyright (C) 2010 John Crispin <john@phrozen.org>
MIPS: Lantiq: Add PCI controller support. 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>
2011-03-30 15:27:49 +08:00
*/
#ifndef _LTQ_PCI_H__
#define _LTQ_PCI_H__
extern __iomem void *ltq_pci_mapped_cfg;
extern int ltq_pci_read_config_dword(struct pci_bus *bus,
unsigned int devfn, int where, int size, u32 *val);
extern int ltq_pci_write_config_dword(struct pci_bus *bus,
unsigned int devfn, int where, int size, u32 val);
#endif