| #ifndef __x8664_PCI_H |
| #define __x8664_PCI_H |
| |
| #include <linux/config.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 int no_iommu, force_iommu; |
| |
| 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); |
| 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> |
| |
| extern int iommu_setup(char *opt); |
| |
| #ifdef CONFIG_GART_IOMMU |
| /* 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 to tell some subsystems |
| * that an IOMMU is available. |
| */ |
| #define PCI_DMA_BUS_IS_PHYS (no_iommu ? 1 : 0) |
| |
| /* |
| * 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_DMA_BUS_IS_PHYS 1 |
| #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(); |
| } |
| |
| 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; |
| } |
| |
| #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 */ |