1#ifndef __x8664_PCI_H 2#define __x8664_PCI_H 3 4#include <asm/io.h> 5 6#ifdef __KERNEL__ 7 8#include <linux/mm.h> /* for struct page */ 9 10/* Can be used to override the logic in pci_scan_bus for skipping 11 already-configured bus numbers - to be used for buggy BIOSes 12 or architectures with incomplete PCI setup by the loader */ 13 14#ifdef CONFIG_PCI 15extern unsigned int pcibios_assign_all_busses(void); 16#else 17#define pcibios_assign_all_busses() 0 18#endif 19#define pcibios_scan_all_fns(a, b) 0 20 21extern unsigned long pci_mem_start; 22#define PCIBIOS_MIN_IO 0x1000 23#define PCIBIOS_MIN_MEM (pci_mem_start) 24 25#define PCIBIOS_MIN_CARDBUS_IO 0x4000 26 27void pcibios_config_init(void); 28struct pci_bus * pcibios_scan_root(int bus); 29extern int (*pci_config_read)(int seg, int bus, int dev, int fn, int reg, int len, u32 *value); 30extern int (*pci_config_write)(int seg, int bus, int dev, int fn, int reg, int len, u32 value); 31 32void pcibios_set_master(struct pci_dev *dev); 33void pcibios_penalize_isa_irq(int irq, int active); 34struct irq_routing_table *pcibios_get_irq_routing_table(void); 35int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq); 36 37#include <linux/types.h> 38#include <linux/slab.h> 39#include <asm/scatterlist.h> 40#include <linux/string.h> 41#include <asm/page.h> 42 43extern void pci_iommu_alloc(void); 44extern int iommu_setup(char *opt); 45 46/* The PCI address space does equal the physical memory 47 * address space. The networking and block device layers use 48 * this boolean for bounce buffer decisions 49 * 50 * On AMD64 it mostly equals, but we set it to zero if a hardware 51 * IOMMU (gart) of sotware IOMMU (swiotlb) is available. 52 */ 53#define PCI_DMA_BUS_IS_PHYS (dma_ops->is_phys) 54 55#if defined(CONFIG_IOMMU) || defined(CONFIG_CALGARY_IOMMU) 56 57/* 58 * x86-64 always supports DAC, but sometimes it is useful to force 59 * devices through the IOMMU to get automatic sg list merging. 60 * Optional right now. 61 */ 62extern int iommu_sac_force; 63#define pci_dac_dma_supported(pci_dev, mask) (!iommu_sac_force) 64 65#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) \ 66 dma_addr_t ADDR_NAME; 67#define DECLARE_PCI_UNMAP_LEN(LEN_NAME) \ 68 __u32 LEN_NAME; 69#define pci_unmap_addr(PTR, ADDR_NAME) \ 70 ((PTR)->ADDR_NAME) 71#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) \ 72 (((PTR)->ADDR_NAME) = (VAL)) 73#define pci_unmap_len(PTR, LEN_NAME) \ 74 ((PTR)->LEN_NAME) 75#define pci_unmap_len_set(PTR, LEN_NAME, VAL) \ 76 (((PTR)->LEN_NAME) = (VAL)) 77 78#else 79/* No IOMMU */ 80 81#define pci_dac_dma_supported(pci_dev, mask) 1 82 83#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) 84#define DECLARE_PCI_UNMAP_LEN(LEN_NAME) 85#define pci_unmap_addr(PTR, ADDR_NAME) (0) 86#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0) 87#define pci_unmap_len(PTR, LEN_NAME) (0) 88#define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0) 89 90#endif 91 92#include <asm-generic/pci-dma-compat.h> 93 94static inline dma64_addr_t 95pci_dac_page_to_dma(struct pci_dev *pdev, struct page *page, unsigned long offset, int direction) 96{ 97 return ((dma64_addr_t) page_to_phys(page) + 98 (dma64_addr_t) offset); 99} 100 101static inline struct page * 102pci_dac_dma_to_page(struct pci_dev *pdev, dma64_addr_t dma_addr) 103{ 104 return virt_to_page(__va(dma_addr)); 105} 106 107static inline unsigned long 108pci_dac_dma_to_offset(struct pci_dev *pdev, dma64_addr_t dma_addr) 109{ 110 return (dma_addr & ~PAGE_MASK); 111} 112 113static inline void 114pci_dac_dma_sync_single_for_cpu(struct pci_dev *pdev, dma64_addr_t dma_addr, size_t len, int direction) 115{ 116} 117 118static inline void 119pci_dac_dma_sync_single_for_device(struct pci_dev *pdev, dma64_addr_t dma_addr, size_t len, int direction) 120{ 121 flush_write_buffers(); 122} 123 124#ifdef CONFIG_PCI 125static inline void pci_dma_burst_advice(struct pci_dev *pdev, 126 enum pci_dma_burst_strategy *strat, 127 unsigned long *strategy_parameter) 128{ 129 *strat = PCI_DMA_BURST_INFINITY; 130 *strategy_parameter = ~0UL; 131} 132#endif 133 134#define HAVE_PCI_MMAP 135extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma, 136 enum pci_mmap_state mmap_state, int write_combine); 137 138static inline void pcibios_add_platform_entries(struct pci_dev *dev) 139{ 140} 141 142#endif /* __KERNEL__ */ 143 144/* generic pci stuff */ 145#ifdef CONFIG_PCI 146#include <asm-generic/pci.h> 147#endif 148 149#endif /* __x8664_PCI_H */ 150