forked from Minki/linux
88c381bf09
PCI_DMA_BUS_IS_PHYS was defined to be zero, which meant we ignored the DMA mask for IDE and SCSI transfers. This is wrong - we have no DMA translation hardware. We want to obey DMA masks so that the block layer performs bouncing itself. Reported-by: Mikael Pettersson <mikpe@it.uu.se> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
92 lines
2.3 KiB
C
92 lines
2.3 KiB
C
#ifndef ASMARM_PCI_H
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#define ASMARM_PCI_H
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#ifdef __KERNEL__
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#include <asm-generic/pci-dma-compat.h>
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#include <mach/hardware.h> /* for PCIBIOS_MIN_* */
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#define pcibios_scan_all_fns(a, b) 0
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#ifdef CONFIG_PCI_HOST_ITE8152
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/* ITE bridge requires setting latency timer to avoid early bus access
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termination by PIC bus mater devices
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*/
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extern void pcibios_set_master(struct pci_dev *dev);
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#else
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static inline void pcibios_set_master(struct pci_dev *dev)
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{
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/* No special bus mastering setup handling */
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}
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#endif
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static inline void pcibios_penalize_isa_irq(int irq, int active)
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{
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/* We don't do dynamic PCI IRQ allocation */
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}
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/*
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* The PCI address space does equal the physical memory address space.
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* The networking and block device layers use this boolean for bounce
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* buffer decisions.
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*/
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#define PCI_DMA_BUS_IS_PHYS (1)
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/*
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* Whether pci_unmap_{single,page} is a nop depends upon the
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* configuration.
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*/
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#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) dma_addr_t ADDR_NAME;
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#define DECLARE_PCI_UNMAP_LEN(LEN_NAME) __u32 LEN_NAME;
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#define pci_unmap_addr(PTR, ADDR_NAME) ((PTR)->ADDR_NAME)
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#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) (((PTR)->ADDR_NAME) = (VAL))
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#define pci_unmap_len(PTR, LEN_NAME) ((PTR)->LEN_NAME)
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#define pci_unmap_len_set(PTR, LEN_NAME, VAL) (((PTR)->LEN_NAME) = (VAL))
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#ifdef CONFIG_PCI
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static inline void pci_dma_burst_advice(struct pci_dev *pdev,
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enum pci_dma_burst_strategy *strat,
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unsigned long *strategy_parameter)
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{
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*strat = PCI_DMA_BURST_INFINITY;
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*strategy_parameter = ~0UL;
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}
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#endif
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#define HAVE_PCI_MMAP
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extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma,
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enum pci_mmap_state mmap_state, int write_combine);
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extern void
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pcibios_resource_to_bus(struct pci_dev *dev, struct pci_bus_region *region,
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struct resource *res);
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extern void
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pcibios_bus_to_resource(struct pci_dev *dev, struct resource *res,
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struct pci_bus_region *region);
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static inline struct resource *
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pcibios_select_root(struct pci_dev *pdev, struct resource *res)
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{
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struct resource *root = NULL;
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if (res->flags & IORESOURCE_IO)
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root = &ioport_resource;
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if (res->flags & IORESOURCE_MEM)
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root = &iomem_resource;
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return root;
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}
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/*
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* Dummy implementation; always return 0.
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*/
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static inline int pci_get_legacy_ide_irq(struct pci_dev *dev, int channel)
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{
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return 0;
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}
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#endif /* __KERNEL__ */
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#endif
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