1 /* originally from linux source.
2 * removed the dependencies on CONFIG_ values
3 * removed virt_to_phys stuff (and in fact everything surrounded by #if __KERNEL__)
4 * Modified By Rob Taylor, Flying Pig Systems, 2000
10 #include <asm/byteorder.h>
12 #ifdef CONFIG_ADDR_MAP
13 #include <asm/global_data.h>
16 DECLARE_GLOBAL_DATA_PTR;
19 #define SIO_CONFIG_RA 0x398
20 #define SIO_CONFIG_RD 0x399
26 #define readb(addr) in_8((volatile u8 *)(addr))
27 #define writeb(b,addr) out_8((volatile u8 *)(addr), (b))
28 #if !defined(__BIG_ENDIAN)
29 #define readw(addr) (*(volatile u16 *) (addr))
30 #define readl(addr) (*(volatile u32 *) (addr))
31 #define writew(b,addr) ((*(volatile u16 *) (addr)) = (b))
32 #define writel(b,addr) ((*(volatile u32 *) (addr)) = (b))
34 #define readw(addr) in_le16((volatile u16 *)(addr))
35 #define readl(addr) in_le32((volatile u32 *)(addr))
36 #define writew(b,addr) out_le16((volatile u16 *)(addr),(b))
37 #define writel(b,addr) out_le32((volatile u32 *)(addr),(b))
41 * The insw/outsw/insl/outsl macros don't do byte-swapping.
42 * They are only used in practice for transferring buffers which
43 * are arrays of bytes, and byte-swapping is not appropriate in
46 #define insb(port, buf, ns) _insb((u8 *)((port)+_IO_BASE), (buf), (ns))
47 #define outsb(port, buf, ns) _outsb((u8 *)((port)+_IO_BASE), (buf), (ns))
48 #define insw(port, buf, ns) _insw_ns((u16 *)((port)+_IO_BASE), (buf), (ns))
49 #define outsw(port, buf, ns) _outsw_ns((u16 *)((port)+_IO_BASE), (buf), (ns))
50 #define insl(port, buf, nl) _insl_ns((u32 *)((port)+_IO_BASE), (buf), (nl))
51 #define outsl(port, buf, nl) _outsl_ns((u32 *)((port)+_IO_BASE), (buf), (nl))
53 #define inb(port) in_8((u8 *)((port)+_IO_BASE))
54 #define outb(val, port) out_8((u8 *)((port)+_IO_BASE), (val))
55 #if !defined(__BIG_ENDIAN)
56 #define inw(port) in_be16((u16 *)((port)+_IO_BASE))
57 #define outw(val, port) out_be16((u16 *)((port)+_IO_BASE), (val))
58 #define inl(port) in_be32((u32 *)((port)+_IO_BASE))
59 #define outl(val, port) out_be32((u32 *)((port)+_IO_BASE), (val))
61 #define inw(port) in_le16((u16 *)((port)+_IO_BASE))
62 #define outw(val, port) out_le16((u16 *)((port)+_IO_BASE), (val))
63 #define inl(port) in_le32((u32 *)((port)+_IO_BASE))
64 #define outl(val, port) out_le32((u32 *)((port)+_IO_BASE), (val))
67 #define inb_p(port) in_8((u8 *)((port)+_IO_BASE))
68 #define outb_p(val, port) out_8((u8 *)((port)+_IO_BASE), (val))
69 #define inw_p(port) in_le16((u16 *)((port)+_IO_BASE))
70 #define outw_p(val, port) out_le16((u16 *)((port)+_IO_BASE), (val))
71 #define inl_p(port) in_le32((u32 *)((port)+_IO_BASE))
72 #define outl_p(val, port) out_le32((u32 *)((port)+_IO_BASE), (val))
74 extern void _insb(volatile u8 *port, void *buf, int ns);
75 extern void _outsb(volatile u8 *port, const void *buf, int ns);
76 extern void _insw(volatile u16 *port, void *buf, int ns);
77 extern void _outsw(volatile u16 *port, const void *buf, int ns);
78 extern void _insl(volatile u32 *port, void *buf, int nl);
79 extern void _outsl(volatile u32 *port, const void *buf, int nl);
80 extern void _insw_ns(volatile u16 *port, void *buf, int ns);
81 extern void _outsw_ns(volatile u16 *port, const void *buf, int ns);
82 extern void _insl_ns(volatile u32 *port, void *buf, int nl);
83 extern void _outsl_ns(volatile u32 *port, const void *buf, int nl);
86 * The *_ns versions below don't do byte-swapping.
87 * Neither do the standard versions now, these are just here
90 #define insw_ns(port, buf, ns) _insw_ns((u16 *)((port)+_IO_BASE), (buf), (ns))
91 #define outsw_ns(port, buf, ns) _outsw_ns((u16 *)((port)+_IO_BASE), (buf), (ns))
92 #define insl_ns(port, buf, nl) _insl_ns((u32 *)((port)+_IO_BASE), (buf), (nl))
93 #define outsl_ns(port, buf, nl) _outsl_ns((u32 *)((port)+_IO_BASE), (buf), (nl))
96 #define IO_SPACE_LIMIT ~0
98 #define memset_io(a,b,c) memset((void *)(a),(b),(c))
99 #define memcpy_fromio(a,b,c) memcpy((a),(void *)(b),(c))
100 #define memcpy_toio(a,b,c) memcpy((void *)(a),(b),(c))
103 * Enforce In-order Execution of I/O:
104 * Acts as a barrier to ensure all previous I/O accesses have
105 * completed before any further ones are issued.
107 static inline void eieio(void)
109 __asm__ __volatile__ ("eieio" : : : "memory");
112 static inline void sync(void)
114 __asm__ __volatile__ ("sync" : : : "memory");
117 static inline void isync(void)
119 __asm__ __volatile__ ("isync" : : : "memory");
122 /* Enforce in-order execution of data I/O.
123 * No distinction between read/write on PPC; use eieio for all three.
125 #define iobarrier_rw() eieio()
126 #define iobarrier_r() eieio()
127 #define iobarrier_w() eieio()
130 #define isb() isync()
133 * Non ordered and non-swapping "raw" accessors
135 #define PCI_FIX_ADDR(addr) (addr)
137 static inline unsigned char __raw_readb(const volatile void __iomem *addr)
139 return *(volatile unsigned char *)PCI_FIX_ADDR(addr);
141 static inline unsigned short __raw_readw(const volatile void __iomem *addr)
143 return *(volatile unsigned short *)PCI_FIX_ADDR(addr);
145 static inline unsigned int __raw_readl(const volatile void __iomem *addr)
147 return *(volatile unsigned int *)PCI_FIX_ADDR(addr);
149 static inline void __raw_writeb(unsigned char v, volatile void __iomem *addr)
151 *(volatile unsigned char *)PCI_FIX_ADDR(addr) = v;
153 static inline void __raw_writew(unsigned short v, volatile void __iomem *addr)
155 *(volatile unsigned short *)PCI_FIX_ADDR(addr) = v;
157 static inline void __raw_writel(unsigned int v, volatile void __iomem *addr)
159 *(volatile unsigned int *)PCI_FIX_ADDR(addr) = v;
163 * 8, 16 and 32 bit, big and little endian I/O operations, with barrier.
165 * Read operations have additional twi & isync to make sure the read
166 * is actually performed (i.e. the data has come back) before we start
167 * executing any following instructions.
169 static inline u8 in_8(const volatile unsigned char __iomem *addr)
173 __asm__ __volatile__(
174 "sync; lbz%U1%X1 %0,%1;\n"
176 "isync" : "=r" (ret) : "m" (*addr));
180 static inline void out_8(volatile unsigned char __iomem *addr, u8 val)
182 __asm__ __volatile__("sync;\n"
188 static inline u16 in_le16(const volatile unsigned short __iomem *addr)
192 __asm__ __volatile__("sync; lhbrx %0,0,%1;\n"
194 "isync" : "=r" (ret) :
195 "r" (addr), "m" (*addr));
199 static inline u16 in_be16(const volatile unsigned short __iomem *addr)
203 __asm__ __volatile__("sync; lhz%U1%X1 %0,%1;\n"
205 "isync" : "=r" (ret) : "m" (*addr));
209 static inline void out_le16(volatile unsigned short __iomem *addr, u16 val)
211 __asm__ __volatile__("sync; sthbrx %1,0,%2" : "=m" (*addr) :
212 "r" (val), "r" (addr));
215 static inline void out_be16(volatile unsigned short __iomem *addr, u16 val)
217 __asm__ __volatile__("sync; sth%U0%X0 %1,%0" : "=m" (*addr) : "r" (val));
220 static inline u32 in_le32(const volatile unsigned __iomem *addr)
224 __asm__ __volatile__("sync; lwbrx %0,0,%1;\n"
226 "isync" : "=r" (ret) :
227 "r" (addr), "m" (*addr));
231 static inline u32 in_be32(const volatile unsigned __iomem *addr)
235 __asm__ __volatile__("sync; lwz%U1%X1 %0,%1;\n"
237 "isync" : "=r" (ret) : "m" (*addr));
241 static inline void out_le32(volatile unsigned __iomem *addr, u32 val)
243 __asm__ __volatile__("sync; stwbrx %1,0,%2" : "=m" (*addr) :
244 "r" (val), "r" (addr));
247 static inline void out_be32(volatile unsigned __iomem *addr, u32 val)
249 __asm__ __volatile__("sync; stw%U0%X0 %1,%0" : "=m" (*addr) : "r" (val));
252 /* Clear and set bits in one shot. These macros can be used to clear and
253 * set multiple bits in a register using a single call. These macros can
254 * also be used to set a multiple-bit bit pattern using a mask, by
255 * specifying the mask in the 'clear' parameter and the new bit pattern
256 * in the 'set' parameter.
259 #define clrbits(type, addr, clear) \
260 out_##type((addr), in_##type(addr) & ~(clear))
262 #define setbits(type, addr, set) \
263 out_##type((addr), in_##type(addr) | (set))
265 #define clrsetbits(type, addr, clear, set) \
266 out_##type((addr), (in_##type(addr) & ~(clear)) | (set))
268 #define clrbits_be32(addr, clear) clrbits(be32, addr, clear)
269 #define setbits_be32(addr, set) setbits(be32, addr, set)
270 #define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set)
272 #define clrbits_le32(addr, clear) clrbits(le32, addr, clear)
273 #define setbits_le32(addr, set) setbits(le32, addr, set)
274 #define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set)
276 #define clrbits_be16(addr, clear) clrbits(be16, addr, clear)
277 #define setbits_be16(addr, set) setbits(be16, addr, set)
278 #define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set)
280 #define clrbits_le16(addr, clear) clrbits(le16, addr, clear)
281 #define setbits_le16(addr, set) setbits(le16, addr, set)
282 #define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set)
284 #define clrbits_8(addr, clear) clrbits(8, addr, clear)
285 #define setbits_8(addr, set) setbits(8, addr, set)
286 #define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set)
288 #define readb_be(addr) \
289 __raw_readb((__force unsigned *)(addr))
290 #define readw_be(addr) \
291 be16_to_cpu(__raw_readw((__force unsigned *)(addr)))
292 #define readl_be(addr) \
293 be32_to_cpu(__raw_readl((__force unsigned *)(addr)))
294 #define readq_be(addr) \
295 be64_to_cpu(__raw_readq((__force unsigned *)(addr)))
297 #define writeb_be(val, addr) \
298 __raw_writeb((val), (__force unsigned *)(addr))
299 #define writew_be(val, addr) \
300 __raw_writew(cpu_to_be16((val)), (__force unsigned *)(addr))
301 #define writel_be(val, addr) \
302 __raw_writel(cpu_to_be32((val)), (__force unsigned *)(addr))
303 #define writeq_be(val, addr) \
304 __raw_writeq(cpu_to_be64((val)), (__force unsigned *)(addr))
306 static inline void *phys_to_virt(phys_addr_t paddr)
308 #ifdef CONFIG_ADDR_MAP
309 if (gd->flags & GD_FLG_RELOC)
310 return addrmap_phys_to_virt(paddr);
312 return (void *)((unsigned long)paddr);
314 #define phys_to_virt phys_to_virt
316 static inline phys_addr_t virt_to_phys(void * vaddr)
318 #ifdef CONFIG_ADDR_MAP
319 if (gd->flags & GD_FLG_RELOC)
320 return addrmap_virt_to_phys(vaddr);
322 return (phys_addr_t)((unsigned long)vaddr);
324 #define virt_to_phys virt_to_phys
326 #include <asm-generic/io.h>