pci_64.h

Go to the documentation of this file.

#ifndef __SPARC64_PCI_H
#define __SPARC64_PCI_H

#ifdef __KERNEL__

#include <linux/dma-mapping.h>

/* 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.
 */
#define pcibios_assign_all_busses() 0

#define PCIBIOS_MIN_IO      0UL
#define PCIBIOS_MIN_MEM     0UL

#define PCI_IRQ_NONE        0xffffffff

static inline void pcibios_penalize_isa_irq(int irq, int active)
{
    /* We don't do dynamic PCI IRQ allocation */
}

/* The PCI address space does not 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)

/* PCI IOMMU mapping bypass support. */

/* PCI 64-bit addressing works for all slots on all controller
 * types on sparc64.  However, it requires that the device
 * can drive enough of the 64 bits.
 */
#define PCI64_REQUIRED_MASK (~(u64)0)
#define PCI64_ADDR_BASE     0xfffc000000000000UL

#ifdef CONFIG_PCI
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;
    else
        cacheline_size = (int) byte * 4;

    *strat = PCI_DMA_BURST_BOUNDARY;
    *strategy_parameter = cacheline_size;
}
#endif

/* Return the index of the PCI controller for device PDEV. */

extern int pci_domain_nr(struct pci_bus *bus);
static inline int pci_proc_domain(struct pci_bus *bus)
{
    return 1;
}

/* Platform support for /proc/bus/pci/X/Y mmap()s. */

#define HAVE_PCI_MMAP
#define HAVE_ARCH_PCI_GET_UNMAPPED_AREA
#define get_pci_unmapped_area get_fb_unmapped_area

extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
                   enum pci_mmap_state mmap_state,
                   int write_combine);

static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
{
    return PCI_IRQ_NONE;
}

#define HAVE_ARCH_PCI_RESOURCE_TO_USER
extern void pci_resource_to_user(const struct pci_dev *dev, int bar,
                 const struct resource *rsrc,
                 resource_size_t *start, resource_size_t *end);
#endif /* __KERNEL__ */

#endif /* __SPARC64_PCI_H */