144 lines
3.5 KiB
C
144 lines
3.5 KiB
C
/*
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* linux/include/asm-m68k/ide.h
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*
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* Copyright (C) 1994-1996 Linus Torvalds & authors
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*/
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/* Copyright(c) 1996 Kars de Jong */
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/* Based on the ide driver from 1.2.13pl8 */
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/*
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* Credits (alphabetical):
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*
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* - Bjoern Brauel
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* - Kars de Jong
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* - Torsten Ebeling
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* - Dwight Engen
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* - Thorsten Floeck
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* - Roman Hodek
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* - Guenther Kelleter
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* - Chris Lawrence
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* - Michael Rausch
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* - Christian Sauer
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* - Michael Schmitz
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* - Jes Soerensen
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* - Michael Thurm
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* - Geert Uytterhoeven
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*/
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#ifndef _M68K_IDE_H
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#define _M68K_IDE_H
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#ifdef __KERNEL__
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#include <asm/setup.h>
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#include <asm/io.h>
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#include <asm/irq.h>
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#ifdef CONFIG_ATARI
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#include <linux/interrupt.h>
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#include <asm/atari_stdma.h>
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#endif
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#ifdef CONFIG_MAC
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#include <asm/macints.h>
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#endif
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#ifndef MAX_HWIFS
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#define MAX_HWIFS 4 /* same as the other archs */
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#endif
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/*
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* Get rid of defs from io.h - ide has its private and conflicting versions
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* Since so far no single m68k platform uses ISA/PCI I/O space for IDE, we
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* always use the `raw' MMIO versions
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*/
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#undef inb
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#undef inw
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#undef insw
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#undef inl
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#undef insl
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#undef outb
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#undef outw
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#undef outsw
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#undef outl
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#undef outsl
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#undef readb
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#undef readw
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#undef readl
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#undef writeb
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#undef writew
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#undef writel
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#define inb in_8
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#define inw in_be16
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#define insw(port, addr, n) raw_insw((u16 *)port, addr, n)
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#define inl in_be32
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#define insl(port, addr, n) raw_insl((u32 *)port, addr, n)
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#define outb(val, port) out_8(port, val)
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#define outw(val, port) out_be16(port, val)
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#define outsw(port, addr, n) raw_outsw((u16 *)port, addr, n)
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#define outl(val, port) out_be32(port, val)
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#define outsl(port, addr, n) raw_outsl((u32 *)port, addr, n)
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#define readb in_8
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#define readw in_be16
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#define __ide_mm_insw(port, addr, n) raw_insw((u16 *)port, addr, n)
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#define readl in_be32
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#define __ide_mm_insl(port, addr, n) raw_insl((u32 *)port, addr, n)
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#define writeb(val, port) out_8(port, val)
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#define writew(val, port) out_be16(port, val)
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#define __ide_mm_outsw(port, addr, n) raw_outsw((u16 *)port, addr, n)
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#define writel(val, port) out_be32(port, val)
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#define __ide_mm_outsl(port, addr, n) raw_outsl((u32 *)port, addr, n)
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#if defined(CONFIG_ATARI) || defined(CONFIG_Q40)
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#define insw_swapw(port, addr, n) raw_insw_swapw((u16 *)port, addr, n)
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#define outsw_swapw(port, addr, n) raw_outsw_swapw((u16 *)port, addr, n)
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#endif
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/* Q40 and Atari have byteswapped IDE busses and since many interesting
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* values in the identification string are text, chars and words they
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* happened to be almost correct without swapping.. However *_capacity
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* is needed for drives over 8 GB. RZ */
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#if defined(CONFIG_Q40) || defined(CONFIG_ATARI)
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#define M68K_IDE_SWAPW (MACH_IS_Q40 || MACH_IS_ATARI)
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#endif
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#ifdef CONFIG_BLK_DEV_FALCON_IDE
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#define IDE_ARCH_LOCK
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extern int falconide_intr_lock;
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static __inline__ void ide_release_lock (void)
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{
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if (MACH_IS_ATARI) {
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if (falconide_intr_lock == 0) {
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printk("ide_release_lock: bug\n");
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return;
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}
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falconide_intr_lock = 0;
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stdma_release();
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}
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}
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static __inline__ void
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ide_get_lock(irqreturn_t (*handler)(int, void *, struct pt_regs *), void *data)
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{
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if (MACH_IS_ATARI) {
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if (falconide_intr_lock == 0) {
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if (in_interrupt() > 0)
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panic( "Falcon IDE hasn't ST-DMA lock in interrupt" );
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stdma_lock(handler, data);
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falconide_intr_lock = 1;
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}
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}
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}
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#endif /* CONFIG_BLK_DEV_FALCON_IDE */
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#define IDE_ARCH_ACK_INTR
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#define ide_ack_intr(hwif) ((hwif)->hw.ack_intr ? (hwif)->hw.ack_intr(hwif) : 1)
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#endif /* __KERNEL__ */
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#endif /* _M68K_IDE_H */
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