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#ifndef __PPC64_PCI_H
#define __PPC64_PCI_H
#ifdef __KERNEL__
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/dma-mapping.h>
#include <asm/machdep.h>
#include <asm/scatterlist.h>
#include <asm/io.h>
#include <asm/prom.h>
#include <asm-generic/pci-dma-compat.h>
#define PCIBIOS_MIN_IO 0x1000
#define PCIBIOS_MIN_MEM 0x10000000
struct pci_dev;
#define pcibios_scan_all_fns(a, b) 0
extern int pcibios_scan_all_fns(struct pci_bus *bus, int devfn);
static inline void pcibios_set_master(struct pci_dev *dev)
/* No special bus mastering setup handling */
static inline void pcibios_penalize_isa_irq(int irq, int active)
/* We don't do dynamic PCI IRQ allocation */
static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
if (ppc_md.pci_get_legacy_ide_irq)
return ppc_md.pci_get_legacy_ide_irq(dev, channel);
return channel ? 15 : 14;
static inline int pcibios_prep_mwi(struct pci_dev *dev)
* We would like to avoid touching the cacheline size or MWI bit
* but we cant do that with the current pcibios_prep_mwi
* interface. pSeries firmware sets the cacheline size (which is not
* the cpu cacheline size in all cases) and hardware treats MWI
* the same as memory write. So we dont touch the cacheline size
* here and allow the generic code to set the MWI bit.
return 0;
extern unsigned int pcibios_assign_all_busses(void);
extern struct dma_mapping_ops pci_dma_ops;
/* For DAC DMA, we currently don't support it by default, but
* we let the platform override this
static inline int pci_dac_dma_supported(struct pci_dev *hwdev,u64 mask)
if (pci_dma_ops.dac_dma_supported)
return pci_dma_ops.dac_dma_supported(&hwdev->dev, mask);
return 0;
static inline void pci_dma_burst_advice(struct pci_dev *pdev,
enum pci_dma_burst_strategy *strat,
unsigned long *strategy_parameter)
unsigned long cacheline_size;
u8 byte;
pci_read_config_byte(pdev, PCI_CACHE_LINE_SIZE, &byte);
if (byte == 0)
cacheline_size = 1024;
cacheline_size = (int) byte * 4;
*strategy_parameter = cacheline_size;
extern int pci_domain_nr(struct pci_bus *bus);
/* Decide whether to display the domain number in /proc */
extern int pci_proc_domain(struct pci_bus *bus);
struct vm_area_struct;
/* Map a range of PCI memory or I/O space for a device into user space */
int pci_mmap_page_range(struct pci_dev *pdev, struct vm_area_struct *vma,
enum pci_mmap_state mmap_state, int write_combine);
/* Tell drivers/pci/proc.c that we have pci_mmap_page_range() */
#define HAVE_PCI_MMAP 1
/* pci_unmap_{single,page} is not a nop, thus... */
dma_addr_t ADDR_NAME;
__u32 LEN_NAME;
#define pci_unmap_addr(PTR, ADDR_NAME) \
#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) \
(((PTR)->ADDR_NAME) = (VAL))
#define pci_unmap_len(PTR, LEN_NAME) \
#define pci_unmap_len_set(PTR, LEN_NAME, VAL) \
(((PTR)->LEN_NAME) = (VAL))
/* The PCI address space does equal the physical memory
* address space. The networking and block device layers use
* this boolean for bounce buffer decisions.
#define PCI_DMA_BUS_IS_PHYS (0)
extern void
pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
struct resource *res);
extern void
pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
struct pci_bus_region *region);
static inline struct resource *
pcibios_select_root(struct pci_dev *pdev, struct resource *res)
struct resource *root = NULL;
if (res->flags & IORESOURCE_IO)
root = &ioport_resource;
if (res->flags & IORESOURCE_MEM)
root = &iomem_resource;
return root;
extern int
unmap_bus_range(struct pci_bus *bus);
extern int
remap_bus_range(struct pci_bus *bus);
extern void
pcibios_fixup_device_resources(struct pci_dev *dev, struct pci_bus *bus);
extern struct pci_controller *init_phb_dynamic(struct device_node *dn);
extern int pci_read_irq_line(struct pci_dev *dev);
extern void pcibios_add_platform_entries(struct pci_dev *dev);
struct file;
extern pgprot_t pci_phys_mem_access_prot(struct file *file,
unsigned long offset,
unsigned long size,
pgprot_t prot);
extern void pci_resource_to_user(const struct pci_dev *dev, int bar,
const struct resource *rsrc,
u64 *start, u64 *end);
#endif /* __KERNEL__ */
#endif /* __PPC64_PCI_H */