1#ifndef __ASM_SH_PCI_H 2#define __ASM_SH_PCI_H 3 4#ifdef __KERNEL__ 5 6#include <linux/dma-mapping.h> 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#define pcibios_assign_all_busses() 1 13#define pcibios_scan_all_fns(a, b) 0 14 15/* 16 * A board can define one or more PCI channels that represent built-in (or 17 * external) PCI controllers. 18 */ 19struct pci_channel { 20 struct pci_ops *pci_ops; 21 struct resource *io_resource; 22 struct resource *mem_resource; 23 int first_devfn; 24 int last_devfn; 25}; 26 27/* 28 * Each board initializes this array and terminates it with a NULL entry. 29 */ 30extern struct pci_channel board_pci_channels[]; 31 32#define PCIBIOS_MIN_IO board_pci_channels->io_resource->start 33#define PCIBIOS_MIN_MEM board_pci_channels->mem_resource->start 34 35/* 36 * I/O routine helpers 37 */ 38#if defined(CONFIG_CPU_SUBTYPE_SH7780) || defined(CONFIG_CPU_SUBTYPE_SH7785) 39#define PCI_IO_AREA 0xFE400000 40#define PCI_IO_SIZE 0x00400000 41#else 42#define PCI_IO_AREA 0xFE240000 43#define PCI_IO_SIZE 0X00040000 44#endif 45 46#define PCI_MEM_SIZE 0x01000000 47 48#define SH4_PCIIOBR_MASK 0xFFFC0000 49#define pci_ioaddr(addr) (PCI_IO_AREA + (addr & ~SH4_PCIIOBR_MASK)) 50 51#if defined(CONFIG_PCI) 52#define is_pci_ioaddr(port) \ 53 (((port) >= PCIBIOS_MIN_IO) && \ 54 ((port) < (PCIBIOS_MIN_IO + PCI_IO_SIZE))) 55#define is_pci_memaddr(port) \ 56 (((port) >= PCIBIOS_MIN_MEM) && \ 57 ((port) < (PCIBIOS_MIN_MEM + PCI_MEM_SIZE))) 58#else 59#define is_pci_ioaddr(port) (0) 60#define is_pci_memaddr(port) (0) 61#endif 62 63struct pci_dev; 64 65extern void pcibios_set_master(struct pci_dev *dev); 66 67static inline void pcibios_penalize_isa_irq(int irq, int active) 68{ 69 /* We don't do dynamic PCI IRQ allocation */ 70} 71 72/* Dynamic DMA mapping stuff. 73 * SuperH has everything mapped statically like x86. 74 */ 75 76/* The PCI address space does equal the physical memory 77 * address space. The networking and block device layers use 78 * this boolean for bounce buffer decisions. 79 */ 80#define PCI_DMA_BUS_IS_PHYS (1) 81 82#include <linux/types.h> 83#include <linux/slab.h> 84#include <asm/scatterlist.h> 85#include <linux/string.h> 86#include <asm/io.h> 87 88/* pci_unmap_{single,page} being a nop depends upon the 89 * configuration. 90 */ 91#ifdef CONFIG_SH_PCIDMA_NONCOHERENT 92#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) \ 93 dma_addr_t ADDR_NAME; 94#define DECLARE_PCI_UNMAP_LEN(LEN_NAME) \ 95 __u32 LEN_NAME; 96#define pci_unmap_addr(PTR, ADDR_NAME) \ 97 ((PTR)->ADDR_NAME) 98#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) \ 99 (((PTR)->ADDR_NAME) = (VAL)) 100#define pci_unmap_len(PTR, LEN_NAME) \ 101 ((PTR)->LEN_NAME) 102#define pci_unmap_len_set(PTR, LEN_NAME, VAL) \ 103 (((PTR)->LEN_NAME) = (VAL)) 104#else 105#define DECLARE_PCI_UNMAP_ADDR(ADDR_NAME) 106#define DECLARE_PCI_UNMAP_LEN(LEN_NAME) 107#define pci_unmap_addr(PTR, ADDR_NAME) (0) 108#define pci_unmap_addr_set(PTR, ADDR_NAME, VAL) do { } while (0) 109#define pci_unmap_len(PTR, LEN_NAME) (0) 110#define pci_unmap_len_set(PTR, LEN_NAME, VAL) do { } while (0) 111#endif 112 113/* Not supporting more than 32-bit PCI bus addresses now, but 114 * must satisfy references to this function. Change if needed. 115 */ 116#define pci_dac_dma_supported(pci_dev, mask) (0) 117 118#ifdef CONFIG_PCI 119static inline void pci_dma_burst_advice(struct pci_dev *pdev, 120 enum pci_dma_burst_strategy *strat, 121 unsigned long *strategy_parameter) 122{ 123 *strat = PCI_DMA_BURST_INFINITY; 124 *strategy_parameter = ~0UL; 125} 126#endif 127 128/* Board-specific fixup routines. */ 129void pcibios_fixup(void); 130int pcibios_init_platform(void); 131int pcibios_map_platform_irq(struct pci_dev *dev, u8 slot, u8 pin); 132 133#ifdef CONFIG_PCI_AUTO 134int pciauto_assign_resources(int busno, struct pci_channel *hose); 135#endif 136 137static inline void pcibios_add_platform_entries(struct pci_dev *dev) 138{ 139} 140 141#endif /* __KERNEL__ */ 142 143/* generic pci stuff */ 144#include <asm-generic/pci.h> 145 146/* generic DMA-mapping stuff */ 147#include <asm-generic/pci-dma-compat.h> 148 149#endif /* __ASM_SH_PCI_H */ 150