Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
| 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 |
| 4 | * for more details. |
| 5 | * |
| 6 | * Copyright (C) 1994-1996 Linus Torvalds & authors |
| 7 | * |
| 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. |
| 12 | */ |
| 13 | #ifndef __ASM_MACH_GENERIC_IDE_H |
| 14 | #define __ASM_MACH_GENERIC_IDE_H |
| 15 | |
| 16 | #ifdef __KERNEL__ |
| 17 | |
| 18 | #include <linux/config.h> |
| 19 | #include <linux/pci.h> |
| 20 | #include <linux/stddef.h> |
Ralf Baechle | 9447cbf | 2005-04-19 12:26:59 +0000 | [diff] [blame] | 21 | #include <asm/processor.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | |
| 23 | #ifndef MAX_HWIFS |
| 24 | # ifdef CONFIG_BLK_DEV_IDEPCI |
| 25 | #define MAX_HWIFS 10 |
| 26 | # else |
| 27 | #define MAX_HWIFS 6 |
| 28 | # endif |
| 29 | #endif |
| 30 | |
| 31 | #define IDE_ARCH_OBSOLETE_DEFAULTS |
| 32 | |
| 33 | static __inline__ int ide_probe_legacy(void) |
| 34 | { |
| 35 | #ifdef CONFIG_PCI |
| 36 | struct pci_dev *dev; |
| 37 | if ((dev = pci_get_class(PCI_CLASS_BRIDGE_EISA << 8, NULL)) != NULL || |
| 38 | (dev = pci_get_class(PCI_CLASS_BRIDGE_ISA << 8, NULL)) != NULL) { |
| 39 | pci_dev_put(dev); |
| 40 | |
| 41 | return 1; |
| 42 | } |
| 43 | return 0; |
| 44 | #elif defined(CONFIG_EISA) || defined(CONFIG_ISA) |
| 45 | return 1; |
| 46 | #else |
| 47 | return 0; |
| 48 | #endif |
| 49 | } |
| 50 | |
| 51 | static __inline__ int ide_default_irq(unsigned long base) |
| 52 | { |
| 53 | if (ide_probe_legacy()) |
| 54 | switch (base) { |
| 55 | case 0x1f0: |
| 56 | return 14; |
| 57 | case 0x170: |
| 58 | return 15; |
| 59 | case 0x1e8: |
| 60 | return 11; |
| 61 | case 0x168: |
| 62 | return 10; |
| 63 | case 0x1e0: |
| 64 | return 8; |
| 65 | case 0x160: |
| 66 | return 12; |
| 67 | default: |
| 68 | return 0; |
| 69 | } |
| 70 | else |
| 71 | return 0; |
| 72 | } |
| 73 | |
| 74 | static __inline__ unsigned long ide_default_io_base(int index) |
| 75 | { |
| 76 | if (ide_probe_legacy()) |
| 77 | switch (index) { |
| 78 | case 0: |
| 79 | return 0x1f0; |
| 80 | case 1: |
| 81 | return 0x170; |
| 82 | case 2: |
| 83 | return 0x1e8; |
| 84 | case 3: |
| 85 | return 0x168; |
| 86 | case 4: |
| 87 | return 0x1e0; |
| 88 | case 5: |
| 89 | return 0x160; |
| 90 | default: |
| 91 | return 0; |
| 92 | } |
| 93 | else |
| 94 | return 0; |
| 95 | } |
| 96 | |
| 97 | #define IDE_ARCH_OBSOLETE_INIT |
| 98 | #define ide_default_io_ctl(base) ((base) + 0x206) /* obsolete */ |
| 99 | |
| 100 | #ifdef CONFIG_BLK_DEV_IDEPCI |
| 101 | #define ide_init_default_irq(base) (0) |
| 102 | #else |
| 103 | #define ide_init_default_irq(base) ide_default_irq(base) |
| 104 | #endif |
| 105 | |
| 106 | /* MIPS port and memory-mapped I/O string operations. */ |
Ralf Baechle | 7e3bfc7 | 2006-04-05 20:42:04 +0100 | [diff] [blame] | 107 | static inline void __ide_flush_prologue(void) |
| 108 | { |
| 109 | #ifdef CONFIG_SMP |
| 110 | if (cpu_has_dc_aliases) |
| 111 | preempt_disable(); |
| 112 | #endif |
| 113 | } |
| 114 | |
| 115 | static inline void __ide_flush_epilogue(void) |
| 116 | { |
| 117 | #ifdef CONFIG_SMP |
| 118 | if (cpu_has_dc_aliases) |
| 119 | preempt_enable(); |
| 120 | #endif |
| 121 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 122 | |
Ralf Baechle | 9447cbf | 2005-04-19 12:26:59 +0000 | [diff] [blame] | 123 | static inline void __ide_flush_dcache_range(unsigned long addr, unsigned long size) |
| 124 | { |
| 125 | if (cpu_has_dc_aliases) { |
| 126 | unsigned long end = addr + size; |
Ralf Baechle | 7e3bfc7 | 2006-04-05 20:42:04 +0100 | [diff] [blame] | 127 | |
| 128 | while (addr < end) { |
| 129 | local_flush_data_cache_page((void *)addr); |
| 130 | addr += PAGE_SIZE; |
| 131 | } |
Ralf Baechle | 9447cbf | 2005-04-19 12:26:59 +0000 | [diff] [blame] | 132 | } |
| 133 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 134 | |
Ralf Baechle | 7e3bfc7 | 2006-04-05 20:42:04 +0100 | [diff] [blame] | 135 | /* |
| 136 | * insw() and gang might be called with interrupts disabled, so we can't |
| 137 | * send IPIs for flushing due to the potencial of deadlocks, see the comment |
| 138 | * above smp_call_function() in arch/mips/kernel/smp.c. We work around the |
| 139 | * problem by disabling preemption so we know we actually perform the flush |
| 140 | * on the processor that actually has the lines to be flushed which hopefully |
| 141 | * is even better for performance anyway. |
| 142 | */ |
Ralf Baechle | 9447cbf | 2005-04-19 12:26:59 +0000 | [diff] [blame] | 143 | static inline void __ide_insw(unsigned long port, void *addr, |
| 144 | unsigned int count) |
| 145 | { |
Ralf Baechle | 7e3bfc7 | 2006-04-05 20:42:04 +0100 | [diff] [blame] | 146 | __ide_flush_prologue(); |
Ralf Baechle | 9447cbf | 2005-04-19 12:26:59 +0000 | [diff] [blame] | 147 | insw(port, addr, count); |
| 148 | __ide_flush_dcache_range((unsigned long)addr, count * 2); |
Ralf Baechle | 7e3bfc7 | 2006-04-05 20:42:04 +0100 | [diff] [blame] | 149 | __ide_flush_epilogue(); |
Ralf Baechle | 9447cbf | 2005-04-19 12:26:59 +0000 | [diff] [blame] | 150 | } |
| 151 | |
| 152 | static inline void __ide_insl(unsigned long port, void *addr, unsigned int count) |
| 153 | { |
Ralf Baechle | 7e3bfc7 | 2006-04-05 20:42:04 +0100 | [diff] [blame] | 154 | __ide_flush_prologue(); |
Ralf Baechle | 9447cbf | 2005-04-19 12:26:59 +0000 | [diff] [blame] | 155 | insl(port, addr, count); |
| 156 | __ide_flush_dcache_range((unsigned long)addr, count * 4); |
Ralf Baechle | 7e3bfc7 | 2006-04-05 20:42:04 +0100 | [diff] [blame] | 157 | __ide_flush_epilogue(); |
Ralf Baechle | 9447cbf | 2005-04-19 12:26:59 +0000 | [diff] [blame] | 158 | } |
| 159 | |
| 160 | static inline void __ide_outsw(unsigned long port, const void *addr, |
| 161 | unsigned long count) |
| 162 | { |
Ralf Baechle | 7e3bfc7 | 2006-04-05 20:42:04 +0100 | [diff] [blame] | 163 | __ide_flush_prologue(); |
Ralf Baechle | 9447cbf | 2005-04-19 12:26:59 +0000 | [diff] [blame] | 164 | outsw(port, addr, count); |
| 165 | __ide_flush_dcache_range((unsigned long)addr, count * 2); |
Ralf Baechle | 7e3bfc7 | 2006-04-05 20:42:04 +0100 | [diff] [blame] | 166 | __ide_flush_epilogue(); |
Ralf Baechle | 9447cbf | 2005-04-19 12:26:59 +0000 | [diff] [blame] | 167 | } |
| 168 | |
| 169 | static inline void __ide_outsl(unsigned long port, const void *addr, |
| 170 | unsigned long count) |
| 171 | { |
Ralf Baechle | 7e3bfc7 | 2006-04-05 20:42:04 +0100 | [diff] [blame] | 172 | __ide_flush_prologue(); |
Ralf Baechle | 9447cbf | 2005-04-19 12:26:59 +0000 | [diff] [blame] | 173 | outsl(port, addr, count); |
| 174 | __ide_flush_dcache_range((unsigned long)addr, count * 4); |
Ralf Baechle | 7e3bfc7 | 2006-04-05 20:42:04 +0100 | [diff] [blame] | 175 | __ide_flush_epilogue(); |
Ralf Baechle | 9447cbf | 2005-04-19 12:26:59 +0000 | [diff] [blame] | 176 | } |
| 177 | |
| 178 | static inline void __ide_mm_insw(void __iomem *port, void *addr, u32 count) |
| 179 | { |
Ralf Baechle | 7e3bfc7 | 2006-04-05 20:42:04 +0100 | [diff] [blame] | 180 | __ide_flush_prologue(); |
Ralf Baechle | 9447cbf | 2005-04-19 12:26:59 +0000 | [diff] [blame] | 181 | readsw(port, addr, count); |
| 182 | __ide_flush_dcache_range((unsigned long)addr, count * 2); |
Ralf Baechle | 7e3bfc7 | 2006-04-05 20:42:04 +0100 | [diff] [blame] | 183 | __ide_flush_epilogue(); |
Ralf Baechle | 9447cbf | 2005-04-19 12:26:59 +0000 | [diff] [blame] | 184 | } |
| 185 | |
| 186 | static inline void __ide_mm_insl(void __iomem *port, void *addr, u32 count) |
| 187 | { |
Ralf Baechle | 7e3bfc7 | 2006-04-05 20:42:04 +0100 | [diff] [blame] | 188 | __ide_flush_prologue(); |
Ralf Baechle | 9447cbf | 2005-04-19 12:26:59 +0000 | [diff] [blame] | 189 | readsl(port, addr, count); |
| 190 | __ide_flush_dcache_range((unsigned long)addr, count * 4); |
Ralf Baechle | 7e3bfc7 | 2006-04-05 20:42:04 +0100 | [diff] [blame] | 191 | __ide_flush_epilogue(); |
Ralf Baechle | 9447cbf | 2005-04-19 12:26:59 +0000 | [diff] [blame] | 192 | } |
| 193 | |
| 194 | static inline void __ide_mm_outsw(void __iomem *port, void *addr, u32 count) |
| 195 | { |
Ralf Baechle | 7e3bfc7 | 2006-04-05 20:42:04 +0100 | [diff] [blame] | 196 | __ide_flush_prologue(); |
Ralf Baechle | 9447cbf | 2005-04-19 12:26:59 +0000 | [diff] [blame] | 197 | writesw(port, addr, count); |
| 198 | __ide_flush_dcache_range((unsigned long)addr, count * 2); |
Ralf Baechle | 7e3bfc7 | 2006-04-05 20:42:04 +0100 | [diff] [blame] | 199 | __ide_flush_epilogue(); |
Ralf Baechle | 9447cbf | 2005-04-19 12:26:59 +0000 | [diff] [blame] | 200 | } |
| 201 | |
| 202 | static inline void __ide_mm_outsl(void __iomem * port, void *addr, u32 count) |
| 203 | { |
Ralf Baechle | 7e3bfc7 | 2006-04-05 20:42:04 +0100 | [diff] [blame] | 204 | __ide_flush_prologue(); |
Ralf Baechle | 9447cbf | 2005-04-19 12:26:59 +0000 | [diff] [blame] | 205 | writesl(port, addr, count); |
| 206 | __ide_flush_dcache_range((unsigned long)addr, count * 4); |
Ralf Baechle | 7e3bfc7 | 2006-04-05 20:42:04 +0100 | [diff] [blame] | 207 | __ide_flush_epilogue(); |
Ralf Baechle | 9447cbf | 2005-04-19 12:26:59 +0000 | [diff] [blame] | 208 | } |
| 209 | |
| 210 | /* ide_insw calls insw, not __ide_insw. Why? */ |
| 211 | #undef insw |
| 212 | #undef insl |
Atsushi Nemoto | a06d61c | 2005-11-06 23:58:21 +0900 | [diff] [blame] | 213 | #undef outsw |
| 214 | #undef outsl |
Ralf Baechle | 9447cbf | 2005-04-19 12:26:59 +0000 | [diff] [blame] | 215 | #define insw(port, addr, count) __ide_insw(port, addr, count) |
| 216 | #define insl(port, addr, count) __ide_insl(port, addr, count) |
Atsushi Nemoto | a06d61c | 2005-11-06 23:58:21 +0900 | [diff] [blame] | 217 | #define outsw(port, addr, count) __ide_outsw(port, addr, count) |
| 218 | #define outsl(port, addr, count) __ide_outsl(port, addr, count) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 219 | |
| 220 | #endif /* __KERNEL__ */ |
| 221 | |
| 222 | #endif /* __ASM_MACH_GENERIC_IDE_H */ |