pci.h
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/*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file "COPYING" in the main directory of this archive
* for more details.
*/
#ifndef _ASM_PCI_H
#define _ASM_PCI_H
#include <linux/mm.h>
#ifdef __KERNEL__
/*
* This file essentially defines the interface between board
* specific PCI code and MIPS common PCI code. Should potentially put
* into include/asm/pci.h file.
*/
#include <linux/ioport.h>
#include <linux/of.h>
/*
* Each pci channel is a top-level PCI bus seem by CPU. A machine with
* multiple PCI channels may have multiple PCI host controllers or a
* single controller supporting multiple channels.
*/
struct pci_controller {
struct pci_controller *next;
struct pci_bus *bus;
struct device_node *of_node;
struct pci_ops *pci_ops;
struct resource *mem_resource;
unsigned long mem_offset;
struct resource *io_resource;
unsigned long io_offset;
unsigned long io_map_base;
struct resource *busn_resource;
unsigned long busn_offset;
unsigned int index;
/* For compatibility with current (as of July 2003) pciutils
and XFree86. Eventually will be removed. */
unsigned int need_domain_info;
int iommu;
/* Optional access methods for reading/writing the bus number
of the PCI controller */
int (*get_busno)(void);
void (*set_busno)(int busno);
};
/*
* Used by boards to register their PCI busses before the actual scanning.
*/
extern void register_pci_controller(struct pci_controller *hose);
/*
* board supplied pci irq fixup routine
*/
extern int pcibios_map_irq(const struct pci_dev *dev, u8 slot, u8 pin);
/* Can be used to override the logic in pci_scan_bus for skipping
already-configured bus numbers - to be used for buggy BIOSes
or architectures with incomplete PCI setup by the loader */
extern unsigned int pcibios_assign_all_busses(void);
extern unsigned long PCIBIOS_MIN_IO;
extern unsigned long PCIBIOS_MIN_MEM;
#define PCIBIOS_MIN_CARDBUS_IO 0x4000
extern void pcibios_set_master(struct pci_dev *dev);
#define HAVE_PCI_MMAP
extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
enum pci_mmap_state mmap_state, int write_combine);
#define HAVE_ARCH_PCI_RESOURCE_TO_USER
static inline void pci_resource_to_user(const struct pci_dev *dev, int bar,
const struct resource *rsrc, resource_size_t *start,
resource_size_t *end)
{
phys_addr_t size = resource_size(rsrc);
*start = fixup_bigphys_addr(rsrc->start, size);
*end = rsrc->start + size;
}
/*
* Dynamic DMA mapping stuff.
* MIPS has everything mapped statically.
*/
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/scatterlist.h>
#include <linux/string.h>
#include <asm/io.h>
#include <asm-generic/pci-bridge.h>
struct pci_dev;
/*
* The PCI address space does equal the physical memory address space. The
* networking and block device layers use this boolean for bounce buffer
* decisions. This is set if any hose does not have an IOMMU.
*/
extern unsigned int PCI_DMA_BUS_IS_PHYS;
#ifdef CONFIG_PCI_DOMAINS
#define pci_domain_nr(bus) ((struct pci_controller *)(bus)->sysdata)->index
static inline int pci_proc_domain(struct pci_bus *bus)
{
struct pci_controller *hose = bus->sysdata;
return hose->need_domain_info;
}
#endif /* CONFIG_PCI_DOMAINS */
#endif /* __KERNEL__ */
/* implement the pci_ DMA API in terms of the generic device dma_ one */
#include <asm-generic/pci-dma-compat.h>
/* Do platform specific device initialization at pci_enable_device() time */
extern int pcibios_plat_dev_init(struct pci_dev *dev);
/* Chances are this interrupt is wired PC-style ... */
static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
{
return channel ? 15 : 14;
}
extern char * (*pcibios_plat_setup)(char *str);
#ifdef CONFIG_OF
/* this function parses memory ranges from a device node */
extern void pci_load_of_ranges(struct pci_controller *hose,
struct device_node *node);
#else
static inline void pci_load_of_ranges(struct pci_controller *hose,
struct device_node *node) {}
#endif
#endif /* _ASM_PCI_H */