Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | #ifndef __ASM_SH_IO_H |
| 2 | #define __ASM_SH_IO_H |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 3 | /* |
| 4 | * Convention: |
Paul Mundt | 1486654 | 2008-10-04 05:25:52 +0900 | [diff] [blame] | 5 | * read{b,w,l,q}/write{b,w,l,q} are for PCI, |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 6 | * while in{b,w,l}/out{b,w,l} are for ISA |
Paul Mundt | 1486654 | 2008-10-04 05:25:52 +0900 | [diff] [blame] | 7 | * |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 8 | * In addition we have 'pausing' versions: in{b,w,l}_p/out{b,w,l}_p |
| 9 | * and 'string' versions: ins{b,w,l}/outs{b,w,l} |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 10 | * |
Paul Mundt | 1486654 | 2008-10-04 05:25:52 +0900 | [diff] [blame] | 11 | * While read{b,w,l,q} and write{b,w,l,q} contain memory barriers |
| 12 | * automatically, there are also __raw versions, which do not. |
| 13 | * |
| 14 | * Historically, we have also had ctrl_in{b,w,l,q}/ctrl_out{b,w,l,q} for |
| 15 | * SuperH specific I/O (raw I/O to on-chip CPU peripherals). In practice |
| 16 | * these have the same semantics as the __raw variants, and as such, all |
| 17 | * new code should be using the __raw versions. |
| 18 | * |
| 19 | * All ISA I/O routines are wrapped through the machine vector. If a |
| 20 | * board does not provide overrides, a generic set that are copied in |
| 21 | * from the default machine vector are used instead. These are largely |
| 22 | * for old compat code for I/O offseting to SuperIOs, all of which are |
| 23 | * better handled through the machvec ioport mapping routines these days. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 24 | */ |
Paul Mundt | 4f744af | 2010-01-18 21:30:29 +0900 | [diff] [blame] | 25 | #include <linux/errno.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | #include <asm/cache.h> |
| 27 | #include <asm/system.h> |
| 28 | #include <asm/addrspace.h> |
| 29 | #include <asm/machvec.h> |
Paul Mundt | b66c1a3 | 2006-01-16 22:14:15 -0800 | [diff] [blame] | 30 | #include <asm/pgtable.h> |
| 31 | #include <asm-generic/iomap.h> |
| 32 | |
| 33 | #ifdef __KERNEL__ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 34 | /* |
| 35 | * Depending on which platform we are running on, we need different |
| 36 | * I/O functions. |
| 37 | */ |
Paul Mundt | b66c1a3 | 2006-01-16 22:14:15 -0800 | [diff] [blame] | 38 | #define __IO_PREFIX generic |
| 39 | #include <asm/io_generic.h> |
Magnus Damm | e7cc9a7 | 2008-02-07 20:18:21 +0900 | [diff] [blame] | 40 | #include <asm/io_trapped.h> |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | |
Paul Mundt | 1486654 | 2008-10-04 05:25:52 +0900 | [diff] [blame] | 42 | #define inb(p) sh_mv.mv_inb((p)) |
| 43 | #define inw(p) sh_mv.mv_inw((p)) |
| 44 | #define inl(p) sh_mv.mv_inl((p)) |
| 45 | #define outb(x,p) sh_mv.mv_outb((x),(p)) |
| 46 | #define outw(x,p) sh_mv.mv_outw((x),(p)) |
| 47 | #define outl(x,p) sh_mv.mv_outl((x),(p)) |
Paul Mundt | b66c1a3 | 2006-01-16 22:14:15 -0800 | [diff] [blame] | 48 | |
Paul Mundt | 1486654 | 2008-10-04 05:25:52 +0900 | [diff] [blame] | 49 | #define inb_p(p) sh_mv.mv_inb_p((p)) |
| 50 | #define inw_p(p) sh_mv.mv_inw_p((p)) |
| 51 | #define inl_p(p) sh_mv.mv_inl_p((p)) |
| 52 | #define outb_p(x,p) sh_mv.mv_outb_p((x),(p)) |
| 53 | #define outw_p(x,p) sh_mv.mv_outw_p((x),(p)) |
| 54 | #define outl_p(x,p) sh_mv.mv_outl_p((x),(p)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 55 | |
Paul Mundt | 1486654 | 2008-10-04 05:25:52 +0900 | [diff] [blame] | 56 | #define insb(p,b,c) sh_mv.mv_insb((p), (b), (c)) |
| 57 | #define insw(p,b,c) sh_mv.mv_insw((p), (b), (c)) |
| 58 | #define insl(p,b,c) sh_mv.mv_insl((p), (b), (c)) |
| 59 | #define outsb(p,b,c) sh_mv.mv_outsb((p), (b), (c)) |
| 60 | #define outsw(p,b,c) sh_mv.mv_outsw((p), (b), (c)) |
| 61 | #define outsl(p,b,c) sh_mv.mv_outsl((p), (b), (c)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 62 | |
Paul Mundt | 1486654 | 2008-10-04 05:25:52 +0900 | [diff] [blame] | 63 | #define __raw_writeb(v,a) (__chk_io_ptr(a), *(volatile u8 __force *)(a) = (v)) |
| 64 | #define __raw_writew(v,a) (__chk_io_ptr(a), *(volatile u16 __force *)(a) = (v)) |
| 65 | #define __raw_writel(v,a) (__chk_io_ptr(a), *(volatile u32 __force *)(a) = (v)) |
| 66 | #define __raw_writeq(v,a) (__chk_io_ptr(a), *(volatile u64 __force *)(a) = (v)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 67 | |
Paul Mundt | 1486654 | 2008-10-04 05:25:52 +0900 | [diff] [blame] | 68 | #define __raw_readb(a) (__chk_io_ptr(a), *(volatile u8 __force *)(a)) |
| 69 | #define __raw_readw(a) (__chk_io_ptr(a), *(volatile u16 __force *)(a)) |
| 70 | #define __raw_readl(a) (__chk_io_ptr(a), *(volatile u32 __force *)(a)) |
| 71 | #define __raw_readq(a) (__chk_io_ptr(a), *(volatile u64 __force *)(a)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 72 | |
Paul Mundt | 1486654 | 2008-10-04 05:25:52 +0900 | [diff] [blame] | 73 | #define readb(a) ({ u8 r_ = __raw_readb(a); mb(); r_; }) |
| 74 | #define readw(a) ({ u16 r_ = __raw_readw(a); mb(); r_; }) |
| 75 | #define readl(a) ({ u32 r_ = __raw_readl(a); mb(); r_; }) |
| 76 | #define readq(a) ({ u64 r_ = __raw_readq(a); mb(); r_; }) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 77 | |
Paul Mundt | 1486654 | 2008-10-04 05:25:52 +0900 | [diff] [blame] | 78 | #define writeb(v,a) ({ __raw_writeb((v),(a)); mb(); }) |
| 79 | #define writew(v,a) ({ __raw_writew((v),(a)); mb(); }) |
| 80 | #define writel(v,a) ({ __raw_writel((v),(a)); mb(); }) |
| 81 | #define writeq(v,a) ({ __raw_writeq((v),(a)); mb(); }) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | |
Paul Mundt | 485773f | 2010-01-26 13:02:10 +0900 | [diff] [blame] | 83 | /* |
| 84 | * Legacy SuperH on-chip I/O functions |
| 85 | * |
| 86 | * These are all deprecated, all new (and especially cross-platform) code |
| 87 | * should be using the __raw_xxx() routines directly. |
| 88 | */ |
| 89 | static inline u8 __deprecated ctrl_inb(unsigned long addr) |
| 90 | { |
| 91 | return __raw_readb(addr); |
| 92 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | |
Paul Mundt | 485773f | 2010-01-26 13:02:10 +0900 | [diff] [blame] | 94 | static inline u16 __deprecated ctrl_inw(unsigned long addr) |
| 95 | { |
| 96 | return __raw_readw(addr); |
| 97 | } |
| 98 | |
| 99 | static inline u32 __deprecated ctrl_inl(unsigned long addr) |
| 100 | { |
| 101 | return __raw_readl(addr); |
| 102 | } |
| 103 | |
| 104 | static inline u64 __deprecated ctrl_inq(unsigned long addr) |
| 105 | { |
| 106 | return __raw_readq(addr); |
| 107 | } |
| 108 | |
| 109 | static inline void __deprecated ctrl_outb(u8 v, unsigned long addr) |
| 110 | { |
| 111 | __raw_writeb(v, addr); |
| 112 | } |
| 113 | |
| 114 | static inline void __deprecated ctrl_outw(u16 v, unsigned long addr) |
| 115 | { |
| 116 | __raw_writew(v, addr); |
| 117 | } |
| 118 | |
| 119 | static inline void __deprecated ctrl_outl(u32 v, unsigned long addr) |
| 120 | { |
| 121 | __raw_writel(v, addr); |
| 122 | } |
| 123 | |
| 124 | static inline void __deprecated ctrl_outq(u64 v, unsigned long addr) |
| 125 | { |
| 126 | __raw_writeq(v, addr); |
| 127 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 128 | |
Paul Mundt | e9c58fc | 2009-11-12 16:36:26 +0900 | [diff] [blame] | 129 | extern unsigned long generic_io_base; |
| 130 | |
Paul Mundt | 1486654 | 2008-10-04 05:25:52 +0900 | [diff] [blame] | 131 | static inline void ctrl_delay(void) |
| 132 | { |
Paul Mundt | e9c58fc | 2009-11-12 16:36:26 +0900 | [diff] [blame] | 133 | __raw_readw(generic_io_base); |
Paul Mundt | 1486654 | 2008-10-04 05:25:52 +0900 | [diff] [blame] | 134 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | |
Paul Mundt | b8f7918 | 2010-02-18 13:23:30 +0900 | [diff] [blame] | 136 | #define __BUILD_UNCACHED_IO(bwlq, type) \ |
| 137 | static inline type read##bwlq##_uncached(unsigned long addr) \ |
| 138 | { \ |
| 139 | type ret; \ |
| 140 | jump_to_uncached(); \ |
| 141 | ret = __raw_read##bwlq(addr); \ |
| 142 | back_to_cached(); \ |
| 143 | return ret; \ |
| 144 | } \ |
| 145 | \ |
| 146 | static inline void write##bwlq##_uncached(type v, unsigned long addr) \ |
| 147 | { \ |
| 148 | jump_to_uncached(); \ |
| 149 | __raw_write##bwlq(v, addr); \ |
| 150 | back_to_cached(); \ |
| 151 | } |
| 152 | |
| 153 | __BUILD_UNCACHED_IO(b, u8) |
| 154 | __BUILD_UNCACHED_IO(w, u16) |
| 155 | __BUILD_UNCACHED_IO(l, u32) |
| 156 | __BUILD_UNCACHED_IO(q, u64) |
| 157 | |
Magnus Damm | da6b003 | 2007-09-10 12:08:42 +0900 | [diff] [blame] | 158 | #define __BUILD_MEMORY_STRING(bwlq, type) \ |
| 159 | \ |
Paul Mundt | 64c9627 | 2008-10-01 15:12:27 +0900 | [diff] [blame] | 160 | static inline void __raw_writes##bwlq(volatile void __iomem *mem, \ |
Magnus Damm | da6b003 | 2007-09-10 12:08:42 +0900 | [diff] [blame] | 161 | const void *addr, unsigned int count) \ |
| 162 | { \ |
| 163 | const volatile type *__addr = addr; \ |
| 164 | \ |
| 165 | while (count--) { \ |
| 166 | __raw_write##bwlq(*__addr, mem); \ |
| 167 | __addr++; \ |
| 168 | } \ |
| 169 | } \ |
| 170 | \ |
Paul Mundt | 64c9627 | 2008-10-01 15:12:27 +0900 | [diff] [blame] | 171 | static inline void __raw_reads##bwlq(volatile void __iomem *mem, \ |
| 172 | void *addr, unsigned int count) \ |
Magnus Damm | da6b003 | 2007-09-10 12:08:42 +0900 | [diff] [blame] | 173 | { \ |
| 174 | volatile type *__addr = addr; \ |
| 175 | \ |
| 176 | while (count--) { \ |
| 177 | *__addr = __raw_read##bwlq(mem); \ |
| 178 | __addr++; \ |
| 179 | } \ |
| 180 | } |
| 181 | |
| 182 | __BUILD_MEMORY_STRING(b, u8) |
| 183 | __BUILD_MEMORY_STRING(w, u16) |
Paul Mundt | 64c9627 | 2008-10-01 15:12:27 +0900 | [diff] [blame] | 184 | |
Paul Mundt | 6dbe47a | 2009-05-09 14:44:30 +0900 | [diff] [blame] | 185 | #ifdef CONFIG_SUPERH32 |
Paul Mundt | 1486654 | 2008-10-04 05:25:52 +0900 | [diff] [blame] | 186 | void __raw_writesl(void __iomem *addr, const void *data, int longlen); |
| 187 | void __raw_readsl(const void __iomem *addr, void *data, int longlen); |
Paul Mundt | 6dbe47a | 2009-05-09 14:44:30 +0900 | [diff] [blame] | 188 | #else |
| 189 | __BUILD_MEMORY_STRING(l, u32) |
| 190 | #endif |
| 191 | |
| 192 | __BUILD_MEMORY_STRING(q, u64) |
Paul Mundt | 64c9627 | 2008-10-01 15:12:27 +0900 | [diff] [blame] | 193 | |
Paul Mundt | 1486654 | 2008-10-04 05:25:52 +0900 | [diff] [blame] | 194 | #define writesb __raw_writesb |
| 195 | #define writesw __raw_writesw |
| 196 | #define writesl __raw_writesl |
Paul Mundt | 05ae915 | 2006-09-27 18:25:24 +0900 | [diff] [blame] | 197 | |
Paul Mundt | 1486654 | 2008-10-04 05:25:52 +0900 | [diff] [blame] | 198 | #define readsb __raw_readsb |
| 199 | #define readsw __raw_readsw |
| 200 | #define readsl __raw_readsl |
| 201 | |
| 202 | #define readb_relaxed(a) readb(a) |
| 203 | #define readw_relaxed(a) readw(a) |
| 204 | #define readl_relaxed(a) readl(a) |
| 205 | #define readq_relaxed(a) readq(a) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 206 | |
David McKay | 15444a8 | 2009-08-24 16:10:40 +0900 | [diff] [blame] | 207 | #ifndef CONFIG_GENERIC_IOMAP |
Paul Mundt | b66c1a3 | 2006-01-16 22:14:15 -0800 | [diff] [blame] | 208 | /* Simple MMIO */ |
Paul Mundt | 64c9627 | 2008-10-01 15:12:27 +0900 | [diff] [blame] | 209 | #define ioread8(a) __raw_readb(a) |
| 210 | #define ioread16(a) __raw_readw(a) |
Paul Mundt | b66c1a3 | 2006-01-16 22:14:15 -0800 | [diff] [blame] | 211 | #define ioread16be(a) be16_to_cpu(__raw_readw((a))) |
Paul Mundt | 64c9627 | 2008-10-01 15:12:27 +0900 | [diff] [blame] | 212 | #define ioread32(a) __raw_readl(a) |
Paul Mundt | b66c1a3 | 2006-01-16 22:14:15 -0800 | [diff] [blame] | 213 | #define ioread32be(a) be32_to_cpu(__raw_readl((a))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 214 | |
Paul Mundt | 64c9627 | 2008-10-01 15:12:27 +0900 | [diff] [blame] | 215 | #define iowrite8(v,a) __raw_writeb((v),(a)) |
| 216 | #define iowrite16(v,a) __raw_writew((v),(a)) |
Paul Mundt | b66c1a3 | 2006-01-16 22:14:15 -0800 | [diff] [blame] | 217 | #define iowrite16be(v,a) __raw_writew(cpu_to_be16((v)),(a)) |
Paul Mundt | 64c9627 | 2008-10-01 15:12:27 +0900 | [diff] [blame] | 218 | #define iowrite32(v,a) __raw_writel((v),(a)) |
Paul Mundt | b66c1a3 | 2006-01-16 22:14:15 -0800 | [diff] [blame] | 219 | #define iowrite32be(v,a) __raw_writel(cpu_to_be32((v)),(a)) |
| 220 | |
Paul Mundt | 64c9627 | 2008-10-01 15:12:27 +0900 | [diff] [blame] | 221 | #define ioread8_rep(a, d, c) __raw_readsb((a), (d), (c)) |
| 222 | #define ioread16_rep(a, d, c) __raw_readsw((a), (d), (c)) |
| 223 | #define ioread32_rep(a, d, c) __raw_readsl((a), (d), (c)) |
Paul Mundt | b66c1a3 | 2006-01-16 22:14:15 -0800 | [diff] [blame] | 224 | |
Paul Mundt | 64c9627 | 2008-10-01 15:12:27 +0900 | [diff] [blame] | 225 | #define iowrite8_rep(a, s, c) __raw_writesb((a), (s), (c)) |
| 226 | #define iowrite16_rep(a, s, c) __raw_writesw((a), (s), (c)) |
| 227 | #define iowrite32_rep(a, s, c) __raw_writesl((a), (s), (c)) |
David McKay | 15444a8 | 2009-08-24 16:10:40 +0900 | [diff] [blame] | 228 | #endif |
| 229 | |
| 230 | #define mmio_insb(p,d,c) __raw_readsb(p,d,c) |
| 231 | #define mmio_insw(p,d,c) __raw_readsw(p,d,c) |
| 232 | #define mmio_insl(p,d,c) __raw_readsl(p,d,c) |
| 233 | |
| 234 | #define mmio_outsb(p,s,c) __raw_writesb(p,s,c) |
| 235 | #define mmio_outsw(p,s,c) __raw_writesw(p,s,c) |
| 236 | #define mmio_outsl(p,s,c) __raw_writesl(p,s,c) |
Paul Mundt | b66c1a3 | 2006-01-16 22:14:15 -0800 | [diff] [blame] | 237 | |
Paul Mundt | 1486654 | 2008-10-04 05:25:52 +0900 | [diff] [blame] | 238 | /* synco on SH-4A, otherwise a nop */ |
| 239 | #define mmiowb() wmb() |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 240 | |
Paul Mundt | 0f2c15c | 2007-11-21 18:06:34 +0900 | [diff] [blame] | 241 | #define IO_SPACE_LIMIT 0xffffffff |
| 242 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 243 | /* |
Paul Mundt | 1486654 | 2008-10-04 05:25:52 +0900 | [diff] [blame] | 244 | * This function provides a method for the generic case where a |
| 245 | * board-specific ioport_map simply needs to return the port + some |
| 246 | * arbitrary port base. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 247 | * |
| 248 | * We use this at board setup time to implicitly set the port base, and |
Paul Mundt | b66c1a3 | 2006-01-16 22:14:15 -0800 | [diff] [blame] | 249 | * as a result, we can use the generic ioport_map. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 250 | */ |
| 251 | static inline void __set_io_port_base(unsigned long pbase) |
| 252 | { |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 253 | generic_io_base = pbase; |
| 254 | } |
| 255 | |
Magnus Damm | e7cc9a7 | 2008-02-07 20:18:21 +0900 | [diff] [blame] | 256 | #define __ioport_map(p, n) sh_mv.mv_ioport_map((p), (n)) |
| 257 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 258 | /* We really want to try and get these to memcpy etc */ |
Paul Mundt | 1486654 | 2008-10-04 05:25:52 +0900 | [diff] [blame] | 259 | void memcpy_fromio(void *, const volatile void __iomem *, unsigned long); |
| 260 | void memcpy_toio(volatile void __iomem *, const void *, unsigned long); |
| 261 | void memset_io(volatile void __iomem *, int, unsigned long); |
Paul Mundt | 959f85f | 2006-09-27 16:43:28 +0900 | [diff] [blame] | 262 | |
Paul Mundt | ac490a4 | 2007-11-20 18:26:28 +0900 | [diff] [blame] | 263 | /* Quad-word real-mode I/O, don't ask.. */ |
| 264 | unsigned long long peek_real_address_q(unsigned long long addr); |
| 265 | unsigned long long poke_real_address_q(unsigned long long addr, |
| 266 | unsigned long long val); |
| 267 | |
Paul Mundt | da06b8d | 2007-11-09 12:58:12 +0900 | [diff] [blame] | 268 | #if !defined(CONFIG_MMU) |
| 269 | #define virt_to_phys(address) ((unsigned long)(address)) |
| 270 | #define phys_to_virt(address) ((void *)(address)) |
Stuart Menefy | d02b08f | 2007-11-30 17:52:53 +0900 | [diff] [blame] | 271 | #else |
Paul Mundt | da06b8d | 2007-11-09 12:58:12 +0900 | [diff] [blame] | 272 | #define virt_to_phys(address) (__pa(address)) |
| 273 | #define phys_to_virt(address) (__va(address)) |
Yoshinori Sato | a2d1a5f | 2006-09-27 17:25:07 +0900 | [diff] [blame] | 274 | #endif |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 275 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 276 | /* |
Paul Mundt | da06b8d | 2007-11-09 12:58:12 +0900 | [diff] [blame] | 277 | * On 32-bit SH, we traditionally have the whole physical address space |
| 278 | * mapped at all times (as MIPS does), so "ioremap()" and "iounmap()" do |
| 279 | * not need to do anything but place the address in the proper segment. |
| 280 | * This is true for P1 and P2 addresses, as well as some P3 ones. |
| 281 | * However, most of the P3 addresses and newer cores using extended |
| 282 | * addressing need to map through page tables, so the ioremap() |
| 283 | * implementation becomes a bit more complicated. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 284 | * |
Paul Mundt | da06b8d | 2007-11-09 12:58:12 +0900 | [diff] [blame] | 285 | * See arch/sh/mm/ioremap.c for additional notes on this. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 286 | * |
| 287 | * We cheat a bit and always return uncachable areas until we've fixed |
Paul Mundt | b66c1a3 | 2006-01-16 22:14:15 -0800 | [diff] [blame] | 288 | * the drivers to handle caching properly. |
Paul Mundt | da06b8d | 2007-11-09 12:58:12 +0900 | [diff] [blame] | 289 | * |
| 290 | * On the SH-5 the concept of segmentation in the 1:1 PXSEG sense simply |
| 291 | * doesn't exist, so everything must go through page tables. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 292 | */ |
Paul Mundt | b66c1a3 | 2006-01-16 22:14:15 -0800 | [diff] [blame] | 293 | #ifdef CONFIG_MMU |
Paul Mundt | 90e7d64 | 2010-02-23 16:20:53 +0900 | [diff] [blame^] | 294 | void __iomem *__ioremap_caller(phys_addr_t offset, unsigned long size, |
Paul Mundt | d57d640 | 2010-01-19 13:34:38 +0900 | [diff] [blame] | 295 | pgprot_t prot, void *caller); |
Paul Mundt | b66c1a3 | 2006-01-16 22:14:15 -0800 | [diff] [blame] | 296 | void __iounmap(void __iomem *addr); |
Paul Mundt | ccd8058 | 2008-04-25 12:58:40 +0900 | [diff] [blame] | 297 | |
Paul Mundt | b66c1a3 | 2006-01-16 22:14:15 -0800 | [diff] [blame] | 298 | static inline void __iomem * |
Paul Mundt | 90e7d64 | 2010-02-23 16:20:53 +0900 | [diff] [blame^] | 299 | __ioremap(phys_addr_t offset, unsigned long size, pgprot_t prot) |
Paul Mundt | bf3cded | 2009-12-14 14:23:41 +0900 | [diff] [blame] | 300 | { |
Paul Mundt | d57d640 | 2010-01-19 13:34:38 +0900 | [diff] [blame] | 301 | return __ioremap_caller(offset, size, prot, __builtin_return_address(0)); |
Paul Mundt | bf3cded | 2009-12-14 14:23:41 +0900 | [diff] [blame] | 302 | } |
| 303 | |
| 304 | static inline void __iomem * |
Paul Mundt | 90e7d64 | 2010-02-23 16:20:53 +0900 | [diff] [blame^] | 305 | __ioremap_29bit(phys_addr_t offset, unsigned long size, pgprot_t prot) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 306 | { |
Paul Mundt | a0ab366 | 2010-01-13 18:31:48 +0900 | [diff] [blame] | 307 | #ifdef CONFIG_29BIT |
Paul Mundt | 90e7d64 | 2010-02-23 16:20:53 +0900 | [diff] [blame^] | 308 | phys_addr_t last_addr = offset + size - 1; |
Paul Mundt | b66c1a3 | 2006-01-16 22:14:15 -0800 | [diff] [blame] | 309 | |
| 310 | /* |
| 311 | * For P1 and P2 space this is trivial, as everything is already |
| 312 | * mapped. Uncached access for P1 addresses are done through P2. |
| 313 | * In the P3 case or for addresses outside of the 29-bit space, |
| 314 | * mapping must be done by the PMB or by using page tables. |
| 315 | */ |
| 316 | if (likely(PXSEG(offset) < P3SEG && PXSEG(last_addr) < P3SEG)) { |
Paul Mundt | d57d640 | 2010-01-19 13:34:38 +0900 | [diff] [blame] | 317 | if (unlikely(pgprot_val(prot) & _PAGE_CACHABLE)) |
Paul Mundt | b66c1a3 | 2006-01-16 22:14:15 -0800 | [diff] [blame] | 318 | return (void __iomem *)P1SEGADDR(offset); |
| 319 | |
| 320 | return (void __iomem *)P2SEGADDR(offset); |
| 321 | } |
Magnus Damm | 716777d | 2008-11-25 21:57:29 +0900 | [diff] [blame] | 322 | |
| 323 | /* P4 above the store queues are always mapped. */ |
| 324 | if (unlikely(offset >= P3_ADDR_MAX)) |
| 325 | return (void __iomem *)P4SEGADDR(offset); |
Paul Mundt | da06b8d | 2007-11-09 12:58:12 +0900 | [diff] [blame] | 326 | #endif |
Paul Mundt | b66c1a3 | 2006-01-16 22:14:15 -0800 | [diff] [blame] | 327 | |
Paul Mundt | a0ab366 | 2010-01-13 18:31:48 +0900 | [diff] [blame] | 328 | return NULL; |
| 329 | } |
| 330 | |
| 331 | static inline void __iomem * |
Paul Mundt | 90e7d64 | 2010-02-23 16:20:53 +0900 | [diff] [blame^] | 332 | __ioremap_mode(phys_addr_t offset, unsigned long size, pgprot_t prot) |
Paul Mundt | a0ab366 | 2010-01-13 18:31:48 +0900 | [diff] [blame] | 333 | { |
| 334 | void __iomem *ret; |
| 335 | |
| 336 | ret = __ioremap_trapped(offset, size); |
| 337 | if (ret) |
| 338 | return ret; |
| 339 | |
Paul Mundt | d57d640 | 2010-01-19 13:34:38 +0900 | [diff] [blame] | 340 | ret = __ioremap_29bit(offset, size, prot); |
Paul Mundt | a0ab366 | 2010-01-13 18:31:48 +0900 | [diff] [blame] | 341 | if (ret) |
| 342 | return ret; |
| 343 | |
Paul Mundt | d57d640 | 2010-01-19 13:34:38 +0900 | [diff] [blame] | 344 | return __ioremap(offset, size, prot); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 345 | } |
Magnus Damm | e6be3a2 | 2009-04-30 12:56:37 +0900 | [diff] [blame] | 346 | #else |
Paul Mundt | d57d640 | 2010-01-19 13:34:38 +0900 | [diff] [blame] | 347 | #define __ioremap(offset, size, prot) ((void __iomem *)(offset)) |
| 348 | #define __ioremap_mode(offset, size, prot) ((void __iomem *)(offset)) |
Magnus Damm | e6be3a2 | 2009-04-30 12:56:37 +0900 | [diff] [blame] | 349 | #define __iounmap(addr) do { } while (0) |
| 350 | #endif /* CONFIG_MMU */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 351 | |
Paul Mundt | 90e7d64 | 2010-02-23 16:20:53 +0900 | [diff] [blame^] | 352 | static inline void __iomem *ioremap(phys_addr_t offset, unsigned long size) |
Paul Mundt | d57d640 | 2010-01-19 13:34:38 +0900 | [diff] [blame] | 353 | { |
| 354 | return __ioremap_mode(offset, size, PAGE_KERNEL_NOCACHE); |
| 355 | } |
| 356 | |
| 357 | static inline void __iomem * |
Paul Mundt | 90e7d64 | 2010-02-23 16:20:53 +0900 | [diff] [blame^] | 358 | ioremap_cache(phys_addr_t offset, unsigned long size) |
Paul Mundt | d57d640 | 2010-01-19 13:34:38 +0900 | [diff] [blame] | 359 | { |
| 360 | return __ioremap_mode(offset, size, PAGE_KERNEL); |
| 361 | } |
| 362 | |
Paul Mundt | 6d63e73 | 2010-01-19 14:00:14 +0900 | [diff] [blame] | 363 | #ifdef CONFIG_HAVE_IOREMAP_PROT |
Paul Mundt | d57d640 | 2010-01-19 13:34:38 +0900 | [diff] [blame] | 364 | static inline void __iomem * |
Paul Mundt | 90e7d64 | 2010-02-23 16:20:53 +0900 | [diff] [blame^] | 365 | ioremap_prot(phys_addr_t offset, unsigned long size, unsigned long flags) |
Paul Mundt | d57d640 | 2010-01-19 13:34:38 +0900 | [diff] [blame] | 366 | { |
| 367 | return __ioremap_mode(offset, size, __pgprot(flags)); |
| 368 | } |
Paul Mundt | 6d63e73 | 2010-01-19 14:00:14 +0900 | [diff] [blame] | 369 | #endif |
Paul Mundt | d57d640 | 2010-01-19 13:34:38 +0900 | [diff] [blame] | 370 | |
Paul Mundt | d627a2e | 2010-01-28 18:17:29 +0900 | [diff] [blame] | 371 | #ifdef CONFIG_IOREMAP_FIXED |
Paul Mundt | 90e7d64 | 2010-02-23 16:20:53 +0900 | [diff] [blame^] | 372 | extern void __iomem *ioremap_fixed(phys_addr_t, unsigned long, pgprot_t); |
Paul Mundt | d627a2e | 2010-01-28 18:17:29 +0900 | [diff] [blame] | 373 | extern int iounmap_fixed(void __iomem *); |
| 374 | extern void ioremap_fixed_init(void); |
| 375 | #else |
| 376 | static inline void __iomem * |
Paul Mundt | 90e7d64 | 2010-02-23 16:20:53 +0900 | [diff] [blame^] | 377 | ioremap_fixed(phys_addr_t phys_addr, unsigned long size, pgprot_t prot) |
Paul Mundt | d627a2e | 2010-01-28 18:17:29 +0900 | [diff] [blame] | 378 | { |
| 379 | BUG(); |
| 380 | return NULL; |
| 381 | } |
| 382 | |
| 383 | static inline void ioremap_fixed_init(void) { } |
| 384 | static inline int iounmap_fixed(void __iomem *addr) { return -EINVAL; } |
| 385 | #endif |
| 386 | |
Paul Mundt | d57d640 | 2010-01-19 13:34:38 +0900 | [diff] [blame] | 387 | #define ioremap_nocache ioremap |
Paul Mundt | d57d640 | 2010-01-19 13:34:38 +0900 | [diff] [blame] | 388 | #define iounmap __iounmap |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 389 | |
Paul Mundt | 1486654 | 2008-10-04 05:25:52 +0900 | [diff] [blame] | 390 | #define maybebadio(port) \ |
| 391 | printk(KERN_ERR "bad PC-like io %s:%u for port 0x%lx at 0x%08x\n", \ |
| 392 | __func__, __LINE__, (port), (u32)__builtin_return_address(0)) |
| 393 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 394 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 395 | * Convert a physical pointer to a virtual kernel pointer for /dev/mem |
| 396 | * access |
| 397 | */ |
| 398 | #define xlate_dev_mem_ptr(p) __va(p) |
| 399 | |
| 400 | /* |
| 401 | * Convert a virtual cached pointer to an uncached pointer |
| 402 | */ |
| 403 | #define xlate_dev_kmem_ptr(p) p |
| 404 | |
Paul Mundt | 185aed7 | 2008-11-12 12:53:48 +0900 | [diff] [blame] | 405 | #define ARCH_HAS_VALID_PHYS_ADDR_RANGE |
| 406 | int valid_phys_addr_range(unsigned long addr, size_t size); |
| 407 | int valid_mmap_phys_addr_range(unsigned long pfn, size_t size); |
| 408 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 409 | #endif /* __KERNEL__ */ |
| 410 | |
| 411 | #endif /* __ASM_SH_IO_H */ |