#ifndef __x8664_PCI_H #define __x8664_PCI_H #include <asm/io.h> #ifdef __KERNEL__ #include <linux/mm.h> /* for struct page */ /* 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 */ #ifdef CONFIG_PCI extern unsigned int pcibios_assign_all_busses(void); #else #define pcibios_assign_all_busses() 0 #endif #define pcibios_scan_all_fns(a, b) 0 extern unsigned long pci_mem_start; #define PCIBIOS_MIN_IO 0x1000 #define PCIBIOS_MIN_MEM (pci_mem_start) #define PCIBIOS_MIN_CARDBUS_IO 0x4000 void pcibios_config_init(void); struct pci_bus * pcibios_scan_root(int bus); extern int (*pci_config_read)(int seg, int bus, int dev, int fn, int reg, int len, u32 *value); extern int (*pci_config_write)(int seg, int bus, int dev, int fn, int reg, int len, u32 value); void pcibios_set_master(struct pci_dev *dev); void pcibios_penalize_isa_irq(int irq, int active); struct irq_routing_table *pcibios_get_irq_routing_table(void); int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq); #include <linux/types.h> #include <linux/slab.h> #include <asm/scatterlist.h> #include <linux/string.h> #include <asm/page.h> #include <linux/dma-mapping.h> /* for have_iommu */ extern int iommu_setup(char *opt); /* The PCI address space does equal the physical memory * address space. The networking and block device layers use * this boolean for bounce buffer decisions * * On AMD64 it mostly equals, but we set it to zero if a hardware * IOMMU (gart) of sotware IOMMU (swiotlb) is available. */ #define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys) #ifdef CONFIG_GART_IOMMU /* * x86-64 always supports DAC, but sometimes it is useful to force * devices through the IOMMU to get automatic sg list merging. * Optional right now. */ extern int iommu_sac_force; #define pci_dac_dma_supported(pci_dev, mask) (!iommu_sac_force) #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) \ dma_addr_t ADDR_NAME; #define DECLARE_PCI_UNMAP_LEN(LEN_NAME) \ __u32 LEN_NAME; #define pci_unmap_addr(PTR, ADDR_NAME) \ ((PTR)->ADDR_NAME) #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) \ (((PTR)->ADDR_NAME) = (VAL)) #define pci_unmap_len(PTR, LEN_NAME) \ ((PTR)->LEN_NAME) #define pci_unmap_len_set(PTR, LEN_NAME, VAL) \ (((PTR)->LEN_NAME) = (VAL)) #else /* No IOMMU */ #define pci_dac_dma_supported(pci_dev, mask) 1 #define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) #define DECLARE_PCI_UNMAP_LEN(LEN_NAME) #define pci_unmap_addr(PTR, ADDR_NAME) (0) #define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0) #define pci_unmap_len(PTR, LEN_NAME) (0) #define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0) #endif #include <asm-generic/pci-dma-compat.h> static inline dma64_addr_t pci_dac_page_to_dma(struct pci_dev *pdev, struct page *page, unsigned long offset, int direction) { return ((dma64_addr_t) page_to_phys(page) + (dma64_addr_t) offset); } static inline struct page * pci_dac_dma_to_page(struct pci_dev *pdev, dma64_addr_t dma_addr) { return virt_to_page(__va(dma_addr)); } static inline unsigned long pci_dac_dma_to_offset(struct pci_dev *pdev, dma64_addr_t dma_addr) { return (dma_addr & ~PAGE_MASK); } static inline void pci_dac_dma_sync_single_for_cpu(struct pci_dev *pdev, dma64_addr_t dma_addr, size_t len, int direction) { } static inline void pci_dac_dma_sync_single_for_device(struct pci_dev *pdev, dma64_addr_t dma_addr, size_t len, int direction) { flush_write_buffers(); } #ifdef CONFIG_PCI static inline void pci_dma_burst_advice(struct pci_dev *pdev, enum pci_dma_burst_strategy *strat, unsigned long *strategy_parameter) { *strat = PCI_DMA_BURST_INFINITY; *strategy_parameter = ~0UL; } #endif #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); static inline void pcibios_add_platform_entries(struct pci_dev *dev) { } #endif /* __KERNEL__ */ /* generic pci stuff */ #ifdef CONFIG_PCI #include <asm-generic/pci.h> #endif #endif /* __x8664_PCI_H */