1 #ifndef _ASM_POWERPC_IO_H
2 #define _ASM_POWERPC_IO_H
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
12 /* Check of existence of legacy devices */
13 extern int check_legacy_ioport(unsigned long base_port);
16 #include <asm-ppc/io.h>
19 #include <linux/compiler.h>
21 #include <asm/byteorder.h>
23 #ifdef CONFIG_PPC_ISERIES
24 #include <asm/iseries/iseries_io.h>
26 #include <asm/synch.h>
27 #include <asm/delay.h>
29 #include <asm-generic/iomap.h>
31 #define __ide_mm_insw(p, a, c) _insw_ns((volatile u16 __iomem *)(p), (a), (c))
32 #define __ide_mm_insl(p, a, c) _insl_ns((volatile u32 __iomem *)(p), (a), (c))
33 #define __ide_mm_outsw(p, a, c) _outsw_ns((volatile u16 __iomem *)(p), (a), (c))
34 #define __ide_mm_outsl(p, a, c) _outsl_ns((volatile u32 __iomem *)(p), (a), (c))
37 #define SIO_CONFIG_RA 0x398
38 #define SIO_CONFIG_RD 0x399
42 extern unsigned long isa_io_base;
43 extern unsigned long pci_io_base;
45 #ifdef CONFIG_PPC_ISERIES
46 /* __raw_* accessors aren't supported on iSeries */
47 #define __raw_readb(addr) { BUG(); 0; }
48 #define __raw_readw(addr) { BUG(); 0; }
49 #define __raw_readl(addr) { BUG(); 0; }
50 #define __raw_readq(addr) { BUG(); 0; }
51 #define __raw_writeb(v, addr) { BUG(); 0; }
52 #define __raw_writew(v, addr) { BUG(); 0; }
53 #define __raw_writel(v, addr) { BUG(); 0; }
54 #define __raw_writeq(v, addr) { BUG(); 0; }
55 #define readb(addr) iSeries_Read_Byte(addr)
56 #define readw(addr) iSeries_Read_Word(addr)
57 #define readl(addr) iSeries_Read_Long(addr)
58 #define writeb(data, addr) iSeries_Write_Byte((data),(addr))
59 #define writew(data, addr) iSeries_Write_Word((data),(addr))
60 #define writel(data, addr) iSeries_Write_Long((data),(addr))
61 #define memset_io(a,b,c) iSeries_memset_io((a),(b),(c))
62 #define memcpy_fromio(a,b,c) iSeries_memcpy_fromio((a), (b), (c))
63 #define memcpy_toio(a,b,c) iSeries_memcpy_toio((a), (b), (c))
65 #define inb(addr) readb(((void __iomem *)(long)(addr)))
66 #define inw(addr) readw(((void __iomem *)(long)(addr)))
67 #define inl(addr) readl(((void __iomem *)(long)(addr)))
68 #define outb(data,addr) writeb(data,((void __iomem *)(long)(addr)))
69 #define outw(data,addr) writew(data,((void __iomem *)(long)(addr)))
70 #define outl(data,addr) writel(data,((void __iomem *)(long)(addr)))
72 * The *_ns versions below don't do byte-swapping.
73 * Neither do the standard versions now, these are just here
76 #define insb(port, buf, ns) _insb((u8 __iomem *)((port)+pci_io_base), (buf), (ns))
77 #define insw(port, buf, ns) _insw_ns((u8 __iomem *)((port)+pci_io_base), (buf), (ns))
78 #define insl(port, buf, nl) _insl_ns((u8 __iomem *)((port)+pci_io_base), (buf), (nl))
79 #define insw_ns(port, buf, ns) _insw_ns((u16 __iomem *)((port)+pci_io_base), (buf), (ns))
80 #define insl_ns(port, buf, nl) _insl_ns((u32 __iomem *)((port)+pci_io_base), (buf), (nl))
83 static inline unsigned char __raw_readb(const volatile void __iomem *addr)
85 return *(volatile unsigned char __force *)addr;
87 static inline unsigned short __raw_readw(const volatile void __iomem *addr)
89 return *(volatile unsigned short __force *)addr;
91 static inline unsigned int __raw_readl(const volatile void __iomem *addr)
93 return *(volatile unsigned int __force *)addr;
95 static inline unsigned long __raw_readq(const volatile void __iomem *addr)
97 return *(volatile unsigned long __force *)addr;
99 static inline void __raw_writeb(unsigned char v, volatile void __iomem *addr)
101 *(volatile unsigned char __force *)addr = v;
103 static inline void __raw_writew(unsigned short v, volatile void __iomem *addr)
105 *(volatile unsigned short __force *)addr = v;
107 static inline void __raw_writel(unsigned int v, volatile void __iomem *addr)
109 *(volatile unsigned int __force *)addr = v;
111 static inline void __raw_writeq(unsigned long v, volatile void __iomem *addr)
113 *(volatile unsigned long __force *)addr = v;
115 #define readb(addr) eeh_readb(addr)
116 #define readw(addr) eeh_readw(addr)
117 #define readl(addr) eeh_readl(addr)
118 #define readq(addr) eeh_readq(addr)
119 #define writeb(data, addr) eeh_writeb((data), (addr))
120 #define writew(data, addr) eeh_writew((data), (addr))
121 #define writel(data, addr) eeh_writel((data), (addr))
122 #define writeq(data, addr) eeh_writeq((data), (addr))
123 #define memset_io(a,b,c) eeh_memset_io((a),(b),(c))
124 #define memcpy_fromio(a,b,c) eeh_memcpy_fromio((a),(b),(c))
125 #define memcpy_toio(a,b,c) eeh_memcpy_toio((a),(b),(c))
126 #define inb(port) eeh_inb((unsigned long)port)
127 #define outb(val, port) eeh_outb(val, (unsigned long)port)
128 #define inw(port) eeh_inw((unsigned long)port)
129 #define outw(val, port) eeh_outw(val, (unsigned long)port)
130 #define inl(port) eeh_inl((unsigned long)port)
131 #define outl(val, port) eeh_outl(val, (unsigned long)port)
134 * The insw/outsw/insl/outsl macros don't do byte-swapping.
135 * They are only used in practice for transferring buffers which
136 * are arrays of bytes, and byte-swapping is not appropriate in
137 * that case. - paulus */
138 #define insb(port, buf, ns) eeh_insb((port), (buf), (ns))
139 #define insw(port, buf, ns) eeh_insw_ns((port), (buf), (ns))
140 #define insl(port, buf, nl) eeh_insl_ns((port), (buf), (nl))
141 #define insw_ns(port, buf, ns) eeh_insw_ns((port), (buf), (ns))
142 #define insl_ns(port, buf, nl) eeh_insl_ns((port), (buf), (nl))
146 #define outsb(port, buf, ns) _outsb((u8 __iomem *)((port)+pci_io_base), (buf), (ns))
147 #define outsw(port, buf, ns) _outsw_ns((u16 __iomem *)((port)+pci_io_base), (buf), (ns))
148 #define outsl(port, buf, nl) _outsl_ns((u32 __iomem *)((port)+pci_io_base), (buf), (nl))
150 #define readb_relaxed(addr) readb(addr)
151 #define readw_relaxed(addr) readw(addr)
152 #define readl_relaxed(addr) readl(addr)
153 #define readq_relaxed(addr) readq(addr)
155 extern void _insb(volatile u8 __iomem *port, void *buf, int ns);
156 extern void _outsb(volatile u8 __iomem *port, const void *buf, int ns);
157 extern void _insw(volatile u16 __iomem *port, void *buf, int ns);
158 extern void _outsw(volatile u16 __iomem *port, const void *buf, int ns);
159 extern void _insl(volatile u32 __iomem *port, void *buf, int nl);
160 extern void _outsl(volatile u32 __iomem *port, const void *buf, int nl);
161 extern void _insw_ns(volatile u16 __iomem *port, void *buf, int ns);
162 extern void _outsw_ns(volatile u16 __iomem *port, const void *buf, int ns);
163 extern void _insl_ns(volatile u32 __iomem *port, void *buf, int nl);
164 extern void _outsl_ns(volatile u32 __iomem *port, const void *buf, int nl);
166 static inline void mmiowb(void)
168 __asm__ __volatile__ ("sync" : : : "memory");
169 get_paca()->io_sync = 0;
173 * output pause versions need a delay at least for the
174 * w83c105 ide controller in a p610.
176 #define inb_p(port) inb(port)
177 #define outb_p(val, port) (udelay(1), outb((val), (port)))
178 #define inw_p(port) inw(port)
179 #define outw_p(val, port) (udelay(1), outw((val), (port)))
180 #define inl_p(port) inl(port)
181 #define outl_p(val, port) (udelay(1), outl((val), (port)))
184 * The *_ns versions below don't do byte-swapping.
185 * Neither do the standard versions now, these are just here
188 #define outsw_ns(port, buf, ns) _outsw_ns((u16 __iomem *)((port)+pci_io_base), (buf), (ns))
189 #define outsl_ns(port, buf, nl) _outsl_ns((u32 __iomem *)((port)+pci_io_base), (buf), (nl))
192 #define IO_SPACE_LIMIT ~(0UL)
195 extern int __ioremap_explicit(unsigned long p_addr, unsigned long v_addr,
196 unsigned long size, unsigned long flags);
197 extern void __iomem *__ioremap(unsigned long address, unsigned long size,
198 unsigned long flags);
201 * ioremap - map bus memory into CPU space
202 * @address: bus address of the memory
203 * @size: size of the resource to map
205 * ioremap performs a platform specific sequence of operations to
206 * make bus memory CPU accessible via the readb/readw/readl/writeb/
207 * writew/writel functions and the other mmio helpers. The returned
208 * address is not guaranteed to be usable directly as a virtual
211 extern void __iomem *ioremap(unsigned long address, unsigned long size);
213 #define ioremap_nocache(addr, size) ioremap((addr), (size))
214 extern int iounmap_explicit(volatile void __iomem *addr, unsigned long size);
215 extern void iounmap(volatile void __iomem *addr);
216 extern void __iomem * reserve_phb_iospace(unsigned long size);
219 * virt_to_phys - map virtual addresses to physical
220 * @address: address to remap
222 * The returned physical address is the physical (CPU) mapping for
223 * the memory address given. It is only valid to use this function on
224 * addresses directly mapped or allocated via kmalloc.
226 * This function does not give bus mappings for DMA transfers. In
227 * almost all conceivable cases a device driver should not be using
230 static inline unsigned long virt_to_phys(volatile void * address)
232 return __pa((unsigned long)address);
236 * phys_to_virt - map physical address to virtual
237 * @address: address to remap
239 * The returned virtual address is a current CPU mapping for
240 * the memory address given. It is only valid to use this function on
241 * addresses that have a kernel mapping
243 * This function does not handle bus mappings for DMA transfers. In
244 * almost all conceivable cases a device driver should not be using
247 static inline void * phys_to_virt(unsigned long address)
249 return (void *)__va(address);
253 * Change "struct page" to physical address.
255 #define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
257 /* We do NOT want virtual merging, it would put too much pressure on
258 * our iommu allocator. Instead, we want drivers to be smart enough
259 * to coalesce sglists that happen to have been mapped in a contiguous
262 #define BIO_VMERGE_BOUNDARY 0
264 static inline void iosync(void)
266 __asm__ __volatile__ ("sync" : : : "memory");
269 /* Enforce in-order execution of data I/O.
270 * No distinction between read/write on PPC; use eieio for all three.
272 #define iobarrier_rw() eieio()
273 #define iobarrier_r() eieio()
274 #define iobarrier_w() eieio()
277 * 8, 16 and 32 bit, big and little endian I/O operations, with barrier.
278 * These routines do not perform EEH-related I/O address translation,
279 * and should not be used directly by device drivers. Use inb/readb
282 static inline int in_8(const volatile unsigned char __iomem *addr)
286 __asm__ __volatile__("sync; lbz%U1%X1 %0,%1; twi 0,%0,0; isync"
287 : "=r" (ret) : "m" (*addr));
291 static inline void out_8(volatile unsigned char __iomem *addr, int val)
293 __asm__ __volatile__("sync; stb%U0%X0 %1,%0"
294 : "=m" (*addr) : "r" (val));
295 get_paca()->io_sync = 1;
298 static inline int in_le16(const volatile unsigned short __iomem *addr)
302 __asm__ __volatile__("sync; lhbrx %0,0,%1; twi 0,%0,0; isync"
303 : "=r" (ret) : "r" (addr), "m" (*addr));
307 static inline int in_be16(const volatile unsigned short __iomem *addr)
311 __asm__ __volatile__("sync; lhz%U1%X1 %0,%1; twi 0,%0,0; isync"
312 : "=r" (ret) : "m" (*addr));
316 static inline void out_le16(volatile unsigned short __iomem *addr, int val)
318 __asm__ __volatile__("sync; sthbrx %1,0,%2"
319 : "=m" (*addr) : "r" (val), "r" (addr));
320 get_paca()->io_sync = 1;
323 static inline void out_be16(volatile unsigned short __iomem *addr, int val)
325 __asm__ __volatile__("sync; sth%U0%X0 %1,%0"
326 : "=m" (*addr) : "r" (val));
327 get_paca()->io_sync = 1;
330 static inline unsigned in_le32(const volatile unsigned __iomem *addr)
334 __asm__ __volatile__("sync; lwbrx %0,0,%1; twi 0,%0,0; isync"
335 : "=r" (ret) : "r" (addr), "m" (*addr));
339 static inline unsigned in_be32(const volatile unsigned __iomem *addr)
343 __asm__ __volatile__("sync; lwz%U1%X1 %0,%1; twi 0,%0,0; isync"
344 : "=r" (ret) : "m" (*addr));
348 static inline void out_le32(volatile unsigned __iomem *addr, int val)
350 __asm__ __volatile__("sync; stwbrx %1,0,%2" : "=m" (*addr)
351 : "r" (val), "r" (addr));
352 get_paca()->io_sync = 1;
355 static inline void out_be32(volatile unsigned __iomem *addr, int val)
357 __asm__ __volatile__("sync; stw%U0%X0 %1,%0"
358 : "=m" (*addr) : "r" (val));
359 get_paca()->io_sync = 1;
362 static inline unsigned long in_le64(const volatile unsigned long __iomem *addr)
364 unsigned long tmp, ret;
366 __asm__ __volatile__(
371 "rldimi %0,%1,5*8,1*8\n"
372 "rldimi %0,%1,3*8,2*8\n"
373 "rldimi %0,%1,1*8,3*8\n"
374 "rldimi %0,%1,7*8,4*8\n"
375 "rldicl %1,%1,32,0\n"
376 "rlwimi %0,%1,8,8,31\n"
377 "rlwimi %0,%1,24,16,23\n"
378 : "=r" (ret) , "=r" (tmp) : "b" (addr) , "m" (*addr));
382 static inline unsigned long in_be64(const volatile unsigned long __iomem *addr)
386 __asm__ __volatile__("sync; ld%U1%X1 %0,%1; twi 0,%0,0; isync"
387 : "=r" (ret) : "m" (*addr));
391 static inline void out_le64(volatile unsigned long __iomem *addr, unsigned long val)
395 __asm__ __volatile__(
396 "rldimi %0,%1,5*8,1*8\n"
397 "rldimi %0,%1,3*8,2*8\n"
398 "rldimi %0,%1,1*8,3*8\n"
399 "rldimi %0,%1,7*8,4*8\n"
400 "rldicl %1,%1,32,0\n"
401 "rlwimi %0,%1,8,8,31\n"
402 "rlwimi %0,%1,24,16,23\n"
405 : "=&r" (tmp) , "=&r" (val) : "1" (val) , "b" (addr) , "m" (*addr));
406 get_paca()->io_sync = 1;
409 static inline void out_be64(volatile unsigned long __iomem *addr, unsigned long val)
411 __asm__ __volatile__("sync; std%U0%X0 %1,%0" : "=m" (*addr) : "r" (val));
412 get_paca()->io_sync = 1;
415 #ifndef CONFIG_PPC_ISERIES
420 * check_signature - find BIOS signatures
421 * @io_addr: mmio address to check
422 * @signature: signature block
423 * @length: length of signature
425 * Perform a signature comparison with the mmio address io_addr. This
426 * address should have been obtained by ioremap.
427 * Returns 1 on a match.
429 static inline int check_signature(const volatile void __iomem * io_addr,
430 const unsigned char *signature, int length)
433 #ifndef CONFIG_PPC_ISERIES
435 if (readb(io_addr) != *signature)
449 #define dma_cache_inv(_start,_size) do { } while (0)
450 #define dma_cache_wback(_start,_size) do { } while (0)
451 #define dma_cache_wback_inv(_start,_size) do { } while (0)
455 * Convert a physical pointer to a virtual kernel pointer for /dev/mem
458 #define xlate_dev_mem_ptr(p) __va(p)
461 * Convert a virtual cached pointer to an uncached pointer
463 #define xlate_dev_kmem_ptr(p) p
465 #endif /* __KERNEL__ */
467 #endif /* CONFIG_PPC64 */
468 #endif /* _ASM_POWERPC_IO_H */