From 384740dc49ea651ba350704d13ff6be9976e37fe Mon Sep 17 00:00:00 2001 From: Ralf Baechle Date: Tue, 16 Sep 2008 19:48:51 +0200 Subject: MIPS: Move headfiles to new location below arch/mips/include Signed-off-by: Ralf Baechle --- arch/mips/include/asm/mach-generic/ide.h | 167 +++++++++++++++++++++++++++++++ 1 file changed, 167 insertions(+) create mode 100644 arch/mips/include/asm/mach-generic/ide.h (limited to 'arch/mips/include/asm/mach-generic/ide.h') diff --git a/arch/mips/include/asm/mach-generic/ide.h b/arch/mips/include/asm/mach-generic/ide.h new file mode 100644 index 00000000000..73008f7bdc9 --- /dev/null +++ b/arch/mips/include/asm/mach-generic/ide.h @@ -0,0 +1,167 @@ +/* + * This file is subject to the terms and conditions of the GNU General Public + * License. See the file "COPYING" in the main directory of this archive + * for more details. + * + * Copyright (C) 1994-1996 Linus Torvalds & authors + * + * Copied from i386; many of the especially older MIPS or ISA-based platforms + * are basically identical. Using this file probably implies i8259 PIC + * support in a system but the very least interrupt numbers 0 - 15 need to + * be put aside for legacy devices. + */ +#ifndef __ASM_MACH_GENERIC_IDE_H +#define __ASM_MACH_GENERIC_IDE_H + +#ifdef __KERNEL__ + +#include +#include +#include + +static __inline__ int ide_probe_legacy(void) +{ +#ifdef CONFIG_PCI + struct pci_dev *dev; + /* + * This can be called on the ide_setup() path, super-early in + * boot. But the down_read() will enable local interrupts, + * which can cause some machines to crash. So here we detect + * and flag that situation and bail out early. + */ + if (no_pci_devices()) + return 0; + dev = pci_get_class(PCI_CLASS_BRIDGE_EISA << 8, NULL); + if (dev) + goto found; + dev = pci_get_class(PCI_CLASS_BRIDGE_ISA << 8, NULL); + if (dev) + goto found; + return 0; +found: + pci_dev_put(dev); + return 1; +#elif defined(CONFIG_EISA) || defined(CONFIG_ISA) + return 1; +#else + return 0; +#endif +} + +/* MIPS port and memory-mapped I/O string operations. */ +static inline void __ide_flush_prologue(void) +{ +#ifdef CONFIG_SMP + if (cpu_has_dc_aliases) + preempt_disable(); +#endif +} + +static inline void __ide_flush_epilogue(void) +{ +#ifdef CONFIG_SMP + if (cpu_has_dc_aliases) + preempt_enable(); +#endif +} + +static inline void __ide_flush_dcache_range(unsigned long addr, unsigned long size) +{ + if (cpu_has_dc_aliases) { + unsigned long end = addr + size; + + while (addr < end) { + local_flush_data_cache_page((void *)addr); + addr += PAGE_SIZE; + } + } +} + +/* + * insw() and gang might be called with interrupts disabled, so we can't + * send IPIs for flushing due to the potencial of deadlocks, see the comment + * above smp_call_function() in arch/mips/kernel/smp.c. We work around the + * problem by disabling preemption so we know we actually perform the flush + * on the processor that actually has the lines to be flushed which hopefully + * is even better for performance anyway. + */ +static inline void __ide_insw(unsigned long port, void *addr, + unsigned int count) +{ + __ide_flush_prologue(); + insw(port, addr, count); + __ide_flush_dcache_range((unsigned long)addr, count * 2); + __ide_flush_epilogue(); +} + +static inline void __ide_insl(unsigned long port, void *addr, unsigned int count) +{ + __ide_flush_prologue(); + insl(port, addr, count); + __ide_flush_dcache_range((unsigned long)addr, count * 4); + __ide_flush_epilogue(); +} + +static inline void __ide_outsw(unsigned long port, const void *addr, + unsigned long count) +{ + __ide_flush_prologue(); + outsw(port, addr, count); + __ide_flush_dcache_range((unsigned long)addr, count * 2); + __ide_flush_epilogue(); +} + +static inline void __ide_outsl(unsigned long port, const void *addr, + unsigned long count) +{ + __ide_flush_prologue(); + outsl(port, addr, count); + __ide_flush_dcache_range((unsigned long)addr, count * 4); + __ide_flush_epilogue(); +} + +static inline void __ide_mm_insw(void __iomem *port, void *addr, u32 count) +{ + __ide_flush_prologue(); + readsw(port, addr, count); + __ide_flush_dcache_range((unsigned long)addr, count * 2); + __ide_flush_epilogue(); +} + +static inline void __ide_mm_insl(void __iomem *port, void *addr, u32 count) +{ + __ide_flush_prologue(); + readsl(port, addr, count); + __ide_flush_dcache_range((unsigned long)addr, count * 4); + __ide_flush_epilogue(); +} + +static inline void __ide_mm_outsw(void __iomem *port, void *addr, u32 count) +{ + __ide_flush_prologue(); + writesw(port, addr, count); + __ide_flush_dcache_range((unsigned long)addr, count * 2); + __ide_flush_epilogue(); +} + +static inline void __ide_mm_outsl(void __iomem * port, void *addr, u32 count) +{ + __ide_flush_prologue(); + writesl(port, addr, count); + __ide_flush_dcache_range((unsigned long)addr, count * 4); + __ide_flush_epilogue(); +} + +/* ide_insw calls insw, not __ide_insw. Why? */ +#undef insw +#undef insl +#undef outsw +#undef outsl +#define insw(port, addr, count) __ide_insw(port, addr, count) +#define insl(port, addr, count) __ide_insl(port, addr, count) +#define outsw(port, addr, count) __ide_outsw(port, addr, count) +#define outsl(port, addr, count) __ide_outsl(port, addr, count) + +#endif /* __KERNEL__ */ + +#endif /* __ASM_MACH_GENERIC_IDE_H */ -- cgit v1.2.3 From cf4049103be931fca133f66b3181490284a521c6 Mon Sep 17 00:00:00 2001 From: Bartlomiej Zolnierkiewicz Date: Mon, 13 Oct 2008 21:39:42 +0200 Subject: ide-generic: remove no longer needed ide_probe_legacy() There is now a generic solution [ide_generic_check_pci_legacy_iobases()] so MIPS-specific ide_probe_legacy() is no longer necessary. Cc: Ralf Baechle Signed-off-by: Bartlomiej Zolnierkiewicz --- arch/mips/include/asm/mach-generic/ide.h | 29 ----------------------------- 1 file changed, 29 deletions(-) (limited to 'arch/mips/include/asm/mach-generic/ide.h') diff --git a/arch/mips/include/asm/mach-generic/ide.h b/arch/mips/include/asm/mach-generic/ide.h index 73008f7bdc9..9c93a5b36f2 100644 --- a/arch/mips/include/asm/mach-generic/ide.h +++ b/arch/mips/include/asm/mach-generic/ide.h @@ -19,35 +19,6 @@ #include #include -static __inline__ int ide_probe_legacy(void) -{ -#ifdef CONFIG_PCI - struct pci_dev *dev; - /* - * This can be called on the ide_setup() path, super-early in - * boot. But the down_read() will enable local interrupts, - * which can cause some machines to crash. So here we detect - * and flag that situation and bail out early. - */ - if (no_pci_devices()) - return 0; - dev = pci_get_class(PCI_CLASS_BRIDGE_EISA << 8, NULL); - if (dev) - goto found; - dev = pci_get_class(PCI_CLASS_BRIDGE_ISA << 8, NULL); - if (dev) - goto found; - return 0; -found: - pci_dev_put(dev); - return 1; -#elif defined(CONFIG_EISA) || defined(CONFIG_ISA) - return 1; -#else - return 0; -#endif -} - /* MIPS port and memory-mapped I/O string operations. */ static inline void __ide_flush_prologue(void) { -- cgit v1.2.3