mirror of
https://github.com/torvalds/linux
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a06d61c648
Add missing bits to fix D-cache aliasing problem in the PIO IDE driver.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
180 lines
4.1 KiB
C
180 lines
4.1 KiB
C
/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 1994-1996 Linus Torvalds & authors
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*
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* Copied from i386; many of the especially older MIPS or ISA-based platforms
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* are basically identical. Using this file probably implies i8259 PIC
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* support in a system but the very least interrupt numbers 0 - 15 need to
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* be put aside for legacy devices.
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*/
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#ifndef __ASM_MACH_GENERIC_IDE_H
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#define __ASM_MACH_GENERIC_IDE_H
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#ifdef __KERNEL__
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#include <linux/config.h>
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#include <linux/pci.h>
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#include <linux/stddef.h>
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#include <asm/processor.h>
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#ifndef MAX_HWIFS
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# ifdef CONFIG_BLK_DEV_IDEPCI
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#define MAX_HWIFS 10
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# else
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#define MAX_HWIFS 6
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# endif
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#endif
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#define IDE_ARCH_OBSOLETE_DEFAULTS
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static __inline__ int ide_probe_legacy(void)
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{
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#ifdef CONFIG_PCI
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struct pci_dev *dev;
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if ((dev = pci_get_class(PCI_CLASS_BRIDGE_EISA << 8, NULL)) != NULL ||
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(dev = pci_get_class(PCI_CLASS_BRIDGE_ISA << 8, NULL)) != NULL) {
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pci_dev_put(dev);
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return 1;
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}
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return 0;
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#elif defined(CONFIG_EISA) || defined(CONFIG_ISA)
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return 1;
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#else
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return 0;
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#endif
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}
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static __inline__ int ide_default_irq(unsigned long base)
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{
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if (ide_probe_legacy())
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switch (base) {
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case 0x1f0:
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return 14;
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case 0x170:
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return 15;
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case 0x1e8:
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return 11;
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case 0x168:
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return 10;
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case 0x1e0:
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return 8;
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case 0x160:
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return 12;
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default:
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return 0;
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}
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else
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return 0;
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}
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static __inline__ unsigned long ide_default_io_base(int index)
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{
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if (ide_probe_legacy())
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switch (index) {
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case 0:
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return 0x1f0;
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case 1:
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return 0x170;
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case 2:
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return 0x1e8;
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case 3:
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return 0x168;
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case 4:
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return 0x1e0;
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case 5:
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return 0x160;
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default:
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return 0;
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}
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else
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return 0;
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}
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#define IDE_ARCH_OBSOLETE_INIT
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#define ide_default_io_ctl(base) ((base) + 0x206) /* obsolete */
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#ifdef CONFIG_BLK_DEV_IDEPCI
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#define ide_init_default_irq(base) (0)
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#else
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#define ide_init_default_irq(base) ide_default_irq(base)
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#endif
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/* MIPS port and memory-mapped I/O string operations. */
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static inline void __ide_flush_dcache_range(unsigned long addr, unsigned long size)
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{
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if (cpu_has_dc_aliases) {
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unsigned long end = addr + size;
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for (; addr < end; addr += PAGE_SIZE)
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flush_dcache_page(virt_to_page(addr));
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}
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}
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static inline void __ide_insw(unsigned long port, void *addr,
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unsigned int count)
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{
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insw(port, addr, count);
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__ide_flush_dcache_range((unsigned long)addr, count * 2);
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}
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static inline void __ide_insl(unsigned long port, void *addr, unsigned int count)
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{
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insl(port, addr, count);
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__ide_flush_dcache_range((unsigned long)addr, count * 4);
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}
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static inline void __ide_outsw(unsigned long port, const void *addr,
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unsigned long count)
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{
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outsw(port, addr, count);
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__ide_flush_dcache_range((unsigned long)addr, count * 2);
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}
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static inline void __ide_outsl(unsigned long port, const void *addr,
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unsigned long count)
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{
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outsl(port, addr, count);
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__ide_flush_dcache_range((unsigned long)addr, count * 4);
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}
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static inline void __ide_mm_insw(void __iomem *port, void *addr, u32 count)
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{
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readsw(port, addr, count);
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__ide_flush_dcache_range((unsigned long)addr, count * 2);
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}
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static inline void __ide_mm_insl(void __iomem *port, void *addr, u32 count)
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{
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readsl(port, addr, count);
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__ide_flush_dcache_range((unsigned long)addr, count * 4);
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}
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static inline void __ide_mm_outsw(void __iomem *port, void *addr, u32 count)
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{
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writesw(port, addr, count);
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__ide_flush_dcache_range((unsigned long)addr, count * 2);
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}
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static inline void __ide_mm_outsl(void __iomem * port, void *addr, u32 count)
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{
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writesl(port, addr, count);
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__ide_flush_dcache_range((unsigned long)addr, count * 4);
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}
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/* ide_insw calls insw, not __ide_insw. Why? */
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#undef insw
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#undef insl
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#undef outsw
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#undef outsl
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#define insw(port, addr, count) __ide_insw(port, addr, count)
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#define insl(port, addr, count) __ide_insl(port, addr, count)
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#define outsw(port, addr, count) __ide_outsw(port, addr, count)
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#define outsl(port, addr, count) __ide_outsl(port, addr, count)
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#endif /* __KERNEL__ */
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#endif /* __ASM_MACH_GENERIC_IDE_H */
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