2 * This file is subject to the terms and conditions of the GNU General Public
3 * License. See the file "COPYING" in the main directory of this archive
6 * Copyright (C) 1994-1996 Linus Torvalds & authors
8 * Copied from i386; many of the especially older MIPS or ISA-based platforms
9 * are basically identical. Using this file probably implies i8259 PIC
10 * support in a system but the very least interrupt numbers 0 - 15 need to
11 * be put aside for legacy devices.
13 #ifndef __ASM_MACH_GENERIC_IDE_H
14 #define __ASM_MACH_GENERIC_IDE_H
18 #include <linux/pci.h>
19 #include <linux/stddef.h>
20 #include <asm/processor.h>
23 # ifdef CONFIG_BLK_DEV_IDEPCI
30 #define IDE_ARCH_OBSOLETE_DEFAULTS
32 static __inline__ int ide_default_irq(unsigned long base)
35 case 0x1f0: return 14;
36 case 0x170: return 15;
37 case 0x1e8: return 11;
38 case 0x168: return 10;
40 case 0x160: return 12;
46 static __inline__ unsigned long ide_default_io_base(int index)
49 * If PCI is present then it is not safe to poke around
50 * the other legacy IDE ports. Only 0x1f0 and 0x170 are
51 * defined compatibility mode ports for PCI. A user can
52 * override this using ide= but we must default safe.
54 if (no_pci_devices()) {
70 #define IDE_ARCH_OBSOLETE_INIT
71 #define ide_default_io_ctl(base) ((base) + 0x206) /* obsolete */
73 #ifdef CONFIG_BLK_DEV_IDEPCI
74 #define ide_init_default_irq(base) (0)
76 #define ide_init_default_irq(base) ide_default_irq(base)
79 /* MIPS port and memory-mapped I/O string operations. */
80 static inline void __ide_flush_prologue(void)
83 if (cpu_has_dc_aliases)
88 static inline void __ide_flush_epilogue(void)
91 if (cpu_has_dc_aliases)
96 static inline void __ide_flush_dcache_range(unsigned long addr, unsigned long size)
98 if (cpu_has_dc_aliases) {
99 unsigned long end = addr + size;
102 local_flush_data_cache_page((void *)addr);
109 * insw() and gang might be called with interrupts disabled, so we can't
110 * send IPIs for flushing due to the potencial of deadlocks, see the comment
111 * above smp_call_function() in arch/mips/kernel/smp.c. We work around the
112 * problem by disabling preemption so we know we actually perform the flush
113 * on the processor that actually has the lines to be flushed which hopefully
114 * is even better for performance anyway.
116 static inline void __ide_insw(unsigned long port, void *addr,
119 __ide_flush_prologue();
120 insw(port, addr, count);
121 __ide_flush_dcache_range((unsigned long)addr, count * 2);
122 __ide_flush_epilogue();
125 static inline void __ide_insl(unsigned long port, void *addr, unsigned int count)
127 __ide_flush_prologue();
128 insl(port, addr, count);
129 __ide_flush_dcache_range((unsigned long)addr, count * 4);
130 __ide_flush_epilogue();
133 static inline void __ide_outsw(unsigned long port, const void *addr,
136 __ide_flush_prologue();
137 outsw(port, addr, count);
138 __ide_flush_dcache_range((unsigned long)addr, count * 2);
139 __ide_flush_epilogue();
142 static inline void __ide_outsl(unsigned long port, const void *addr,
145 __ide_flush_prologue();
146 outsl(port, addr, count);
147 __ide_flush_dcache_range((unsigned long)addr, count * 4);
148 __ide_flush_epilogue();
151 static inline void __ide_mm_insw(void __iomem *port, void *addr, u32 count)
153 __ide_flush_prologue();
154 readsw(port, addr, count);
155 __ide_flush_dcache_range((unsigned long)addr, count * 2);
156 __ide_flush_epilogue();
159 static inline void __ide_mm_insl(void __iomem *port, void *addr, u32 count)
161 __ide_flush_prologue();
162 readsl(port, addr, count);
163 __ide_flush_dcache_range((unsigned long)addr, count * 4);
164 __ide_flush_epilogue();
167 static inline void __ide_mm_outsw(void __iomem *port, void *addr, u32 count)
169 __ide_flush_prologue();
170 writesw(port, addr, count);
171 __ide_flush_dcache_range((unsigned long)addr, count * 2);
172 __ide_flush_epilogue();
175 static inline void __ide_mm_outsl(void __iomem * port, void *addr, u32 count)
177 __ide_flush_prologue();
178 writesl(port, addr, count);
179 __ide_flush_dcache_range((unsigned long)addr, count * 4);
180 __ide_flush_epilogue();
183 /* ide_insw calls insw, not __ide_insw. Why? */
188 #define insw(port, addr, count) __ide_insw(port, addr, count)
189 #define insl(port, addr, count) __ide_insl(port, addr, count)
190 #define outsw(port, addr, count) __ide_outsw(port, addr, count)
191 #define outsl(port, addr, count) __ide_outsl(port, addr, count)
193 #endif /* __KERNEL__ */
195 #endif /* __ASM_MACH_GENERIC_IDE_H */