5 #include <linux/string.h>
6 #include <linux/types.h>
9 #include <asm/byteorder.h>
10 #include <asm/synch.h>
13 #define SIO_CONFIG_RA 0x398
14 #define SIO_CONFIG_RD 0x399
18 #define PMAC_ISA_MEM_BASE 0
19 #define PMAC_PCI_DRAM_OFFSET 0
20 #define CHRP_ISA_IO_BASE 0xf8000000
21 #define CHRP_ISA_MEM_BASE 0xf7000000
22 #define CHRP_PCI_DRAM_OFFSET 0
23 #define PREP_ISA_IO_BASE 0x80000000
24 #define PREP_ISA_MEM_BASE 0xc0000000
25 #define PREP_PCI_DRAM_OFFSET 0x80000000
27 #if defined(CONFIG_4xx)
28 #include <asm/ibm4xx.h>
29 #elif defined(CONFIG_8xx)
30 #include <asm/mpc8xx.h>
31 #elif defined(CONFIG_8260)
32 #include <asm/mpc8260.h>
33 #elif defined(CONFIG_APUS) || !defined(CONFIG_PCI)
35 #define _ISA_MEM_BASE 0
36 #define PCI_DRAM_OFFSET 0
37 #else /* Everyone else */
38 #define _IO_BASE isa_io_base
39 #define _ISA_MEM_BASE isa_mem_base
40 #define PCI_DRAM_OFFSET pci_dram_offset
41 #endif /* Platform-dependent I/O */
43 #define ___IO_BASE ((void __iomem *)_IO_BASE)
44 extern unsigned long isa_io_base
;
45 extern unsigned long isa_mem_base
;
46 extern unsigned long pci_dram_offset
;
49 * 8, 16 and 32 bit, big and little endian I/O operations, with barrier.
51 * Read operations have additional twi & isync to make sure the read
52 * is actually performed (i.e. the data has come back) before we start
53 * executing any following instructions.
55 extern inline int in_8(const volatile unsigned char __iomem
*addr
)
60 "sync; lbz%U1%X1 %0,%1;\n"
62 "isync" : "=r" (ret
) : "m" (*addr
));
66 extern inline void out_8(volatile unsigned char __iomem
*addr
, int val
)
68 __asm__
__volatile__("stb%U0%X0 %1,%0; eieio" : "=m" (*addr
) : "r" (val
));
71 extern inline int in_le16(const volatile unsigned short __iomem
*addr
)
75 __asm__
__volatile__("sync; lhbrx %0,0,%1;\n"
77 "isync" : "=r" (ret
) :
78 "r" (addr
), "m" (*addr
));
82 extern inline int in_be16(const volatile unsigned short __iomem
*addr
)
86 __asm__
__volatile__("sync; lhz%U1%X1 %0,%1;\n"
88 "isync" : "=r" (ret
) : "m" (*addr
));
92 extern inline void out_le16(volatile unsigned short __iomem
*addr
, int val
)
94 __asm__
__volatile__("sync; sthbrx %1,0,%2" : "=m" (*addr
) :
95 "r" (val
), "r" (addr
));
98 extern inline void out_be16(volatile unsigned short __iomem
*addr
, int val
)
100 __asm__
__volatile__("sync; sth%U0%X0 %1,%0" : "=m" (*addr
) : "r" (val
));
103 extern inline unsigned in_le32(const volatile unsigned __iomem
*addr
)
107 __asm__
__volatile__("sync; lwbrx %0,0,%1;\n"
109 "isync" : "=r" (ret
) :
110 "r" (addr
), "m" (*addr
));
114 extern inline unsigned in_be32(const volatile unsigned __iomem
*addr
)
118 __asm__
__volatile__("sync; lwz%U1%X1 %0,%1;\n"
120 "isync" : "=r" (ret
) : "m" (*addr
));
124 extern inline void out_le32(volatile unsigned __iomem
*addr
, int val
)
126 __asm__
__volatile__("sync; stwbrx %1,0,%2" : "=m" (*addr
) :
127 "r" (val
), "r" (addr
));
130 extern inline void out_be32(volatile unsigned __iomem
*addr
, int val
)
132 __asm__
__volatile__("sync; stw%U0%X0 %1,%0" : "=m" (*addr
) : "r" (val
));
134 #if defined (CONFIG_8260_PCI9)
135 #define readb(addr) in_8((volatile u8 *)(addr))
136 #define writeb(b,addr) out_8((volatile u8 *)(addr), (b))
138 static inline __u8
readb(const volatile void __iomem
*addr
)
142 static inline void writeb(__u8 b
, volatile void __iomem
*addr
)
148 #if defined(CONFIG_APUS)
149 static inline __u16
readw(const volatile void __iomem
*addr
)
151 return *(__force
volatile __u16
*)(addr
);
153 static inline __u32
readl(const volatile void __iomem
*addr
)
155 return *(__force
volatile __u32
*)(addr
);
157 static inline void writew(__u16 b
, volatile void __iomem
*addr
)
159 *(__force
volatile __u16
*)(addr
) = b
;
161 static inline void writel(__u32 b
, volatile void __iomem
*addr
)
163 *(__force
volatile __u32
*)(addr
) = b
;
165 #elif defined (CONFIG_8260_PCI9)
166 /* Use macros if PCI9 workaround enabled */
167 #define readw(addr) in_le16((volatile u16 *)(addr))
168 #define readl(addr) in_le32((volatile u32 *)(addr))
169 #define writew(b,addr) out_le16((volatile u16 *)(addr),(b))
170 #define writel(b,addr) out_le32((volatile u32 *)(addr),(b))
172 static inline __u16
readw(const volatile void __iomem
*addr
)
174 return in_le16(addr
);
176 static inline __u32
readl(const volatile void __iomem
*addr
)
178 return in_le32(addr
);
180 static inline void writew(__u16 b
, volatile void __iomem
*addr
)
184 static inline void writel(__u32 b
, volatile void __iomem
*addr
)
188 #endif /* CONFIG_APUS */
190 #define readb_relaxed(addr) readb(addr)
191 #define readw_relaxed(addr) readw(addr)
192 #define readl_relaxed(addr) readl(addr)
194 static inline __u8
__raw_readb(const volatile void __iomem
*addr
)
196 return *(__force
volatile __u8
*)(addr
);
198 static inline __u16
__raw_readw(const volatile void __iomem
*addr
)
200 return *(__force
volatile __u16
*)(addr
);
202 static inline __u32
__raw_readl(const volatile void __iomem
*addr
)
204 return *(__force
volatile __u32
*)(addr
);
206 static inline void __raw_writeb(__u8 b
, volatile void __iomem
*addr
)
208 *(__force
volatile __u8
*)(addr
) = b
;
210 static inline void __raw_writew(__u16 b
, volatile void __iomem
*addr
)
212 *(__force
volatile __u16
*)(addr
) = b
;
214 static inline void __raw_writel(__u32 b
, volatile void __iomem
*addr
)
216 *(__force
volatile __u32
*)(addr
) = b
;
222 * The insw/outsw/insl/outsl macros don't do byte-swapping.
223 * They are only used in practice for transferring buffers which
224 * are arrays of bytes, and byte-swapping is not appropriate in
225 * that case. - paulus
227 #define insb(port, buf, ns) _insb((port)+___IO_BASE, (buf), (ns))
228 #define outsb(port, buf, ns) _outsb((port)+___IO_BASE, (buf), (ns))
229 #define insw(port, buf, ns) _insw_ns((port)+___IO_BASE, (buf), (ns))
230 #define outsw(port, buf, ns) _outsw_ns((port)+___IO_BASE, (buf), (ns))
231 #define insl(port, buf, nl) _insl_ns((port)+___IO_BASE, (buf), (nl))
232 #define outsl(port, buf, nl) _outsl_ns((port)+___IO_BASE, (buf), (nl))
235 * On powermacs and 8xx we will get a machine check exception
236 * if we try to read data from a non-existent I/O port. Because
237 * the machine check is an asynchronous exception, it isn't
238 * well-defined which instruction SRR0 will point to when the
240 * With the sequence below (twi; isync; nop), we have found that
241 * the machine check occurs on one of the three instructions on
242 * all PPC implementations tested so far. The twi and isync are
243 * needed on the 601 (in fact twi; sync works too), the isync and
244 * nop are needed on 604[e|r], and any of twi, sync or isync will
245 * work on 603[e], 750, 74xx.
246 * The twi creates an explicit data dependency on the returned
247 * value which seems to be needed to make the 601 wait for the
251 #define __do_in_asm(name, op) \
252 extern __inline__ unsigned int name(unsigned int port) \
255 __asm__ __volatile__( \
257 "0:" op " %0,0,%1\n" \
262 ".section .fixup,\"ax\"\n" \
266 ".section __ex_table,\"a\"\n" \
274 : "r" (port + ___IO_BASE)); \
278 #define __do_out_asm(name, op) \
279 extern __inline__ void name(unsigned int val, unsigned int port) \
281 __asm__ __volatile__( \
283 "0:" op " %0,0,%1\n" \
286 ".section __ex_table,\"a\"\n" \
291 : : "r" (val), "r" (port + ___IO_BASE)); \
294 __do_out_asm(outb
, "stbx")
296 __do_in_asm(inb
, "lbzx")
297 __do_in_asm(inw
, "lhz%U1%X1")
298 __do_in_asm(inl
, "lwz%U1%X1")
299 __do_out_asm(outl
,"stw%U0%X0")
300 __do_out_asm(outw
, "sth%U0%X0")
301 #elif defined (CONFIG_8260_PCI9)
302 /* in asm cannot be defined if PCI9 workaround is used */
303 #define inb(port) in_8((port)+___IO_BASE)
304 #define inw(port) in_le16((port)+___IO_BASE)
305 #define inl(port) in_le32((port)+___IO_BASE)
306 __do_out_asm(outw
, "sthbrx")
307 __do_out_asm(outl
, "stwbrx")
309 __do_in_asm(inb
, "lbzx")
310 __do_in_asm(inw
, "lhbrx")
311 __do_in_asm(inl
, "lwbrx")
312 __do_out_asm(outw
, "sthbrx")
313 __do_out_asm(outl
, "stwbrx")
317 #define inb_p(port) inb((port))
318 #define outb_p(val, port) outb((val), (port))
319 #define inw_p(port) inw((port))
320 #define outw_p(val, port) outw((val), (port))
321 #define inl_p(port) inl((port))
322 #define outl_p(val, port) outl((val), (port))
324 extern void _insb(const volatile u8 __iomem
*addr
, void *buf
, long count
);
325 extern void _outsb(volatile u8 __iomem
*addr
,const void *buf
,long count
);
326 extern void _insw_ns(const volatile u16 __iomem
*addr
, void *buf
, long count
);
327 extern void _outsw_ns(volatile u16 __iomem
*addr
, const void *buf
, long count
);
328 extern void _insl_ns(const volatile u32 __iomem
*addr
, void *buf
, long count
);
329 extern void _outsl_ns(volatile u32 __iomem
*addr
, const void *buf
, long count
);
332 #define IO_SPACE_LIMIT ~0
334 #if defined (CONFIG_8260_PCI9)
335 #define memset_io(a,b,c) memset((void *)(a),(b),(c))
336 #define memcpy_fromio(a,b,c) memcpy((a),(void *)(b),(c))
337 #define memcpy_toio(a,b,c) memcpy((void *)(a),(b),(c))
339 static inline void memset_io(volatile void __iomem
*addr
, unsigned char val
, int count
)
341 memset((void __force
*)addr
, val
, count
);
343 static inline void memcpy_fromio(void *dst
,const volatile void __iomem
*src
, int count
)
345 memcpy(dst
, (void __force
*) src
, count
);
347 static inline void memcpy_toio(volatile void __iomem
*dst
, const void *src
, int count
)
349 memcpy((void __force
*) dst
, src
, count
);
353 #define eth_io_copy_and_sum(a,b,c,d) eth_copy_and_sum((a),(void __force *)(void __iomem *)(b),(c),(d))
356 * Map in an area of physical address space, for accessing
359 extern void __iomem
*__ioremap(phys_addr_t address
, unsigned long size
,
360 unsigned long flags
);
361 extern void __iomem
*ioremap(phys_addr_t address
, unsigned long size
);
363 extern void __iomem
*ioremap64(unsigned long long address
, unsigned long size
);
365 #define ioremap_nocache(addr, size) ioremap((addr), (size))
366 extern void iounmap(volatile void __iomem
*addr
);
367 extern unsigned long iopa(unsigned long addr
);
368 extern unsigned long mm_ptov(unsigned long addr
) __attribute_const__
;
369 extern void io_block_mapping(unsigned long virt
, phys_addr_t phys
,
370 unsigned int size
, int flags
);
373 * The PCI bus is inherently Little-Endian. The PowerPC is being
374 * run Big-Endian. Thus all values which cross the [PCI] barrier
375 * must be endian-adjusted. Also, the local DRAM has a different
376 * address from the PCI point of view, thus buffer addresses also
377 * have to be modified [mapped] appropriately.
379 extern inline unsigned long virt_to_bus(volatile void * address
)
382 if (address
== (void *)0)
384 return (unsigned long)address
- KERNELBASE
+ PCI_DRAM_OFFSET
;
386 return iopa ((unsigned long) address
);
390 extern inline void * bus_to_virt(unsigned long address
)
395 return (void *)(address
- PCI_DRAM_OFFSET
+ KERNELBASE
);
397 return (void*) mm_ptov (address
);
402 * Change virtual addresses to physical addresses and vv, for
403 * addresses in the area where the kernel has the RAM mapped.
405 extern inline unsigned long virt_to_phys(volatile void * address
)
408 return (unsigned long) address
- KERNELBASE
;
410 return iopa ((unsigned long) address
);
414 extern inline void * phys_to_virt(unsigned long address
)
417 return (void *) (address
+ KERNELBASE
);
419 return (void*) mm_ptov (address
);
424 * Change "struct page" to physical address.
426 #define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
427 #define page_to_bus(page) (page_to_phys(page) + PCI_DRAM_OFFSET)
429 /* Enforce in-order execution of data I/O.
430 * No distinction between read/write on PPC; use eieio for all three.
432 #define iobarrier_rw() eieio()
433 #define iobarrier_r() eieio()
434 #define iobarrier_w() eieio()
437 * Here comes the ppc implementation of the IOMAP
440 static inline unsigned int ioread8(void __iomem
*addr
)
445 static inline unsigned int ioread16(void __iomem
*addr
)
450 static inline unsigned int ioread32(void __iomem
*addr
)
455 static inline void iowrite8(u8 val
, void __iomem
*addr
)
460 static inline void iowrite16(u16 val
, void __iomem
*addr
)
465 static inline void iowrite32(u32 val
, void __iomem
*addr
)
470 static inline void ioread8_rep(void __iomem
*addr
, void *dst
, unsigned long count
)
472 _insb(addr
, dst
, count
);
475 static inline void ioread16_rep(void __iomem
*addr
, void *dst
, unsigned long count
)
477 _insw_ns(addr
, dst
, count
);
480 static inline void ioread32_rep(void __iomem
*addr
, void *dst
, unsigned long count
)
482 _insl_ns(addr
, dst
, count
);
485 static inline void iowrite8_rep(void __iomem
*addr
, const void *src
, unsigned long count
)
487 _outsb(addr
, src
, count
);
490 static inline void iowrite16_rep(void __iomem
*addr
, const void *src
, unsigned long count
)
492 _outsw_ns(addr
, src
, count
);
495 static inline void iowrite32_rep(void __iomem
*addr
, const void *src
, unsigned long count
)
497 _outsl_ns(addr
, src
, count
);
500 /* Create a virtual mapping cookie for an IO port range */
501 extern void __iomem
*ioport_map(unsigned long port
, unsigned int nr
);
502 extern void ioport_unmap(void __iomem
*);
504 /* Create a virtual mapping cookie for a PCI BAR (memory or IO) */
506 extern void __iomem
*pci_iomap(struct pci_dev
*dev
, int bar
, unsigned long max
);
507 extern void pci_iounmap(struct pci_dev
*dev
, void __iomem
*);
509 #endif /* _PPC_IO_H */
511 #ifdef CONFIG_8260_PCI9
512 #include <asm/mpc8260_pci9.h>
515 #ifdef CONFIG_NOT_COHERENT_CACHE
517 #define dma_cache_inv(_start,_size) \
518 invalidate_dcache_range(_start, (_start + _size))
519 #define dma_cache_wback(_start,_size) \
520 clean_dcache_range(_start, (_start + _size))
521 #define dma_cache_wback_inv(_start,_size) \
522 flush_dcache_range(_start, (_start + _size))
526 #define dma_cache_inv(_start,_size) do { } while (0)
527 #define dma_cache_wback(_start,_size) do { } while (0)
528 #define dma_cache_wback_inv(_start,_size) do { } while (0)
533 * Convert a physical pointer to a virtual kernel pointer for /dev/mem
536 #define xlate_dev_mem_ptr(p) __va(p)
539 * Convert a virtual cached pointer to an uncached pointer
541 #define xlate_dev_kmem_ptr(p) p
544 #define setbits32(_addr, _v) out_be32((_addr), in_be32(_addr) | (_v))
545 #define clrbits32(_addr, _v) out_be32((_addr), in_be32(_addr) & ~(_v))
547 #define setbits16(_addr, _v) out_be16((_addr), in_be16(_addr) | (_v))
548 #define clrbits16(_addr, _v) out_be16((_addr), in_be16(_addr) & ~(_v))
550 #endif /* __KERNEL__ */