1/* 2 * linux/include/asm-alpha/ide.h 3 * 4 * Copyright (C) 1994-1996 Linus Torvalds & authors 5 */ 6 7/* 8 * This file contains the alpha architecture specific IDE code. 9 */ 10 11#ifndef __ASMalpha_IDE_H 12#define __ASMalpha_IDE_H 13 14#ifdef __KERNEL__ 15 16#include <linux/config.h> 17 18#ifndef MAX_HWIFS 19#define MAX_HWIFS 4 20#endif 21 22#define ide__sti() __sti() 23 24static __inline__ int ide_default_irq(ide_ioreg_t base) 25{ 26 switch (base) { 27 case 0x1f0: return 14; 28 case 0x170: return 15; 29 case 0x1e8: return 11; 30 case 0x168: return 10; 31 default: 32 return 0; 33 } 34} 35 36static __inline__ ide_ioreg_t ide_default_io_base(int index) 37{ 38 switch (index) { 39 case 0: return 0x1f0; 40 case 1: return 0x170; 41 case 2: return 0x1e8; 42 case 3: return 0x168; 43 default: 44 return 0; 45 } 46} 47 48static __inline__ void ide_init_hwif_ports(hw_regs_t *hw, ide_ioreg_t data_port, ide_ioreg_t ctrl_port, int *irq) 49{ 50 ide_ioreg_t reg = data_port; 51 int i; 52 53 for (i = IDE_DATA_OFFSET; i <= IDE_STATUS_OFFSET; i++) { 54 hw->io_ports[i] = reg; 55 reg += 1; 56 } 57 if (ctrl_port) { 58 hw->io_ports[IDE_CONTROL_OFFSET] = ctrl_port; 59 } else { 60 hw->io_ports[IDE_CONTROL_OFFSET] = hw->io_ports[IDE_DATA_OFFSET] + 0x206; 61 } 62 if (irq != NULL) 63 *irq = 0; 64 hw->io_ports[IDE_IRQ_OFFSET] = 0; 65} 66 67/* 68 * This registers the standard ports for this architecture with the IDE 69 * driver. 70 */ 71static __inline__ void ide_init_default_hwifs(void) 72{ 73#ifndef CONFIG_BLK_DEV_IDEPCI 74 hw_regs_t hw; 75 int index; 76 77 for (index = 0; index < MAX_HWIFS; index++) { 78 ide_init_hwif_ports(&hw, ide_default_io_base(index), 0, NULL); 79 hw.irq = ide_default_irq(ide_default_io_base(index)); 80 ide_register_hw(&hw, NULL); 81 } 82#endif /* CONFIG_BLK_DEV_IDEPCI */ 83} 84 85typedef union { 86 unsigned all : 8; /* all of the bits together */ 87 struct { 88 unsigned head : 4; /* always zeros here */ 89 unsigned unit : 1; /* drive select number, 0 or 1 */ 90 unsigned bit5 : 1; /* always 1 */ 91 unsigned lba : 1; /* using LBA instead of CHS */ 92 unsigned bit7 : 1; /* always 1 */ 93 } b; 94} select_t; 95 96typedef union { 97 unsigned all : 8; /* all of the bits together */ 98 struct { 99 unsigned bit0 : 1; 100 unsigned nIEN : 1; /* device INTRQ to host */ 101 unsigned SRST : 1; /* host soft reset bit */ 102 unsigned bit3 : 1; /* ATA-2 thingy */ 103 unsigned reserved456 : 3; 104 unsigned HOB : 1; /* 48-bit address ordering */ 105 } b; 106} control_t; 107 108#define ide_request_irq(irq,hand,flg,dev,id) request_irq((irq),(hand),(flg),(dev),(id)) 109#define ide_free_irq(irq,dev_id) free_irq((irq), (dev_id)) 110#define ide_check_region(from,extent) check_region((from), (extent)) 111#define ide_request_region(from,extent,name) request_region((from), (extent), (name)) 112#define ide_release_region(from,extent) release_region((from), (extent)) 113 114/* 115 * The following are not needed for the non-m68k ports 116 */ 117#define ide_ack_intr(hwif) (1) 118#define ide_fix_driveid(id) do {} while (0) 119#define ide_release_lock(lock) do {} while (0) 120#define ide_get_lock(lock, hdlr, data) do {} while (0) 121 122#endif /* __KERNEL__ */ 123 124#endif /* __ASMalpha_IDE_H */ 125