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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/list.h>
#include <linux/of.h>
#ifdef CONFIG_PCI_DRIVERS_LEGACY
/*
* 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 list_head list;
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;
#ifndef CONFIG_PCI_DOMAINS_GENERIC
unsigned int index;
/* For compatibility with current (as of July 2003) pciutils
and XFree86. Eventually will be removed. */
unsigned int need_domain_info;
#endif
/* 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);
/* Do platform specific device initialization at pci_enable_device() time */
extern int pcibios_plat_dev_init(struct pci_dev *dev);
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
#ifdef CONFIG_PCI_DOMAINS_GENERIC
static inline void set_pci_need_domain_info(struct pci_controller *hose,
int need_domain_info)
{
/* nothing to do */
}
#elif defined(CONFIG_PCI_DOMAINS)
static inline void set_pci_need_domain_info(struct pci_controller *hose,
int need_domain_info)
{
hose->need_domain_info = need_domain_info;
}
#endif /* CONFIG_PCI_DOMAINS */
#endif
/* 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 */
static inline unsigned int pcibios_assign_all_busses(void)
{
return 1;
}
extern unsigned long PCIBIOS_MIN_IO;
extern unsigned long PCIBIOS_MIN_MEM;
#define PCIBIOS_MIN_CARDBUS_IO 0x4000
#define HAVE_PCI_MMAP
#define ARCH_GENERIC_PCI_MMAP_RESOURCE
/*
* 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>
#ifdef CONFIG_PCI_DOMAINS_GENERIC
static inline int pci_proc_domain(struct pci_bus *bus)
{
return pci_domain_nr(bus);
}
#elif defined(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__ */
/* 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;
}
#endif /* _ASM_PCI_H */
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