1#ifndef __i386_PCI_H 2#define __i386_PCI_H 3 4 5#ifdef __KERNEL__ 6#include <linux/mm.h> /* for struct page */ 7 8/* Can be used to override the logic in pci_scan_bus for skipping 9 already-configured bus numbers - to be used for buggy BIOSes 10 or architectures with incomplete PCI setup by the loader */ 11 12#ifdef CONFIG_PCI 13extern unsigned int pcibios_assign_all_busses(void); 14#else 15#define pcibios_assign_all_busses() 0 16#endif 17#define pcibios_scan_all_fns(a, b) 0 18 19extern unsigned long pci_mem_start; 20#define PCIBIOS_MIN_IO 0x1000 21#define PCIBIOS_MIN_MEM (pci_mem_start) 22 23#define PCIBIOS_MIN_CARDBUS_IO 0x4000 24 25void pcibios_config_init(void); 26struct pci_bus * pcibios_scan_root(int bus); 27 28void pcibios_set_master(struct pci_dev *dev); 29void pcibios_penalize_isa_irq(int irq, int active); 30struct irq_routing_table *pcibios_get_irq_routing_table(void); 31int pcibios_set_irq_routing(struct pci_dev *dev, int pin, int irq); 32 33/* Dynamic DMA mapping stuff. 34 * i386 has everything mapped statically. 35 */ 36 37#include <linux/types.h> 38#include <linux/slab.h> 39#include <asm/scatterlist.h> 40#include <linux/string.h> 41#include <asm/io.h> 42 43struct pci_dev; 44 45/* The PCI address space does equal the physical memory 46 * address space. The networking and block device layers use 47 * this boolean for bounce buffer decisions. 48 */ 49#define PCI_DMA_BUS_IS_PHYS (1) 50 51/* pci_unmap_{page,single} is a nop so... */ 52#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) 53#define DECLARE_PCI_UNMAP_LEN(LEN_NAME) 54#define pci_unmap_addr(PTR, ADDR_NAME) (0) 55#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0) 56#define pci_unmap_len(PTR, LEN_NAME) (0) 57#define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0) 58 59/* This is always fine. */ 60#define pci_dac_dma_supported(pci_dev, mask) (1) 61 62static inline dma64_addr_t 63pci_dac_page_to_dma(struct pci_dev *pdev, struct page *page, unsigned long offset, int direction) 64{ 65 return ((dma64_addr_t) page_to_phys(page) + 66 (dma64_addr_t) offset); 67} 68 69static inline struct page * 70pci_dac_dma_to_page(struct pci_dev *pdev, dma64_addr_t dma_addr) 71{ 72 return pfn_to_page(dma_addr >> PAGE_SHIFT); 73} 74 75static inline unsigned long 76pci_dac_dma_to_offset(struct pci_dev *pdev, dma64_addr_t dma_addr) 77{ 78 return (dma_addr & ~PAGE_MASK); 79} 80 81static inline void 82pci_dac_dma_sync_single_for_cpu(struct pci_dev *pdev, dma64_addr_t dma_addr, size_t len, int direction) 83{ 84} 85 86static inline void 87pci_dac_dma_sync_single_for_device(struct pci_dev *pdev, dma64_addr_t dma_addr, size_t len, int direction) 88{ 89 flush_write_buffers(); 90} 91 92#define HAVE_PCI_MMAP 93extern int pci_mmap_page_range(struct pci_dev *dev, struct vm_area_struct *vma, 94 enum pci_mmap_state mmap_state, int write_combine); 95 96 97static inline void pcibios_add_platform_entries(struct pci_dev *dev) 98{ 99} 100 101#ifdef CONFIG_PCI 102static inline void pci_dma_burst_advice(struct pci_dev *pdev, 103 enum pci_dma_burst_strategy *strat, 104 unsigned long *strategy_parameter) 105{ 106 *strat = PCI_DMA_BURST_INFINITY; 107 *strategy_parameter = ~0UL; 108} 109#endif 110 111#endif /* __KERNEL__ */ 112 113/* implement the pci_ DMA API in terms of the generic device dma_ one */ 114#include <asm-generic/pci-dma-compat.h> 115 116/* generic pci stuff */ 117#include <asm-generic/pci.h> 118 119#endif /* __i386_PCI_H */ 120