5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License
7 * as published by the Free Software Foundation; either version
8 * 2 of the License, or (at your option) any later version.
11 #include <linux/config.h>
12 #include <linux/compiler.h>
14 #include <asm/byteorder.h>
15 #ifdef CONFIG_PPC_ISERIES
16 #include <asm/iSeries/iSeries_io.h>
18 #include <asm/memory.h>
19 #include <asm/delay.h>
21 #include <asm-generic/iomap.h>
23 #define __ide_mm_insw(p, a, c) _insw_ns((volatile u16 *)(p), (a), (c))
24 #define __ide_mm_insl(p, a, c) _insl_ns((volatile u32 *)(p), (a), (c))
25 #define __ide_mm_outsw(p, a, c) _outsw_ns((volatile u16 *)(p), (a), (c))
26 #define __ide_mm_outsl(p, a, c) _outsl_ns((volatile u32 *)(p), (a), (c))
29 #define SIO_CONFIG_RA 0x398
30 #define SIO_CONFIG_RD 0x399
34 extern unsigned long isa_io_base;
35 extern unsigned long pci_io_base;
37 #ifdef CONFIG_PPC_ISERIES
38 /* __raw_* accessors aren't supported on iSeries */
39 #define __raw_readb(addr) { BUG(); 0; }
40 #define __raw_readw(addr) { BUG(); 0; }
41 #define __raw_readl(addr) { BUG(); 0; }
42 #define __raw_readq(addr) { BUG(); 0; }
43 #define __raw_writeb(v, addr) { BUG(); 0; }
44 #define __raw_writew(v, addr) { BUG(); 0; }
45 #define __raw_writel(v, addr) { BUG(); 0; }
46 #define __raw_writeq(v, addr) { BUG(); 0; }
47 #define readb(addr) iSeries_Read_Byte(addr)
48 #define readw(addr) iSeries_Read_Word(addr)
49 #define readl(addr) iSeries_Read_Long(addr)
50 #define writeb(data, addr) iSeries_Write_Byte((data),(addr))
51 #define writew(data, addr) iSeries_Write_Word((data),(addr))
52 #define writel(data, addr) iSeries_Write_Long((data),(addr))
53 #define memset_io(a,b,c) iSeries_memset_io((a),(b),(c))
54 #define memcpy_fromio(a,b,c) iSeries_memcpy_fromio((a), (b), (c))
55 #define memcpy_toio(a,b,c) iSeries_memcpy_toio((a), (b), (c))
57 #define inb(addr) readb(((void __iomem *)(long)(addr)))
58 #define inw(addr) readw(((void __iomem *)(long)(addr)))
59 #define inl(addr) readl(((void __iomem *)(long)(addr)))
60 #define outb(data,addr) writeb(data,((void __iomem *)(long)(addr)))
61 #define outw(data,addr) writew(data,((void __iomem *)(long)(addr)))
62 #define outl(data,addr) writel(data,((void __iomem *)(long)(addr)))
64 * The *_ns versions below don't do byte-swapping.
65 * Neither do the standard versions now, these are just here
68 #define insw_ns(port, buf, ns) _insw_ns((u16 *)((port)+pci_io_base), (buf), (ns))
69 #define insl_ns(port, buf, nl) _insl_ns((u32 *)((port)+pci_io_base), (buf), (nl))
72 static inline unsigned char __raw_readb(const volatile void __iomem *addr)
74 return *(volatile unsigned char __force *)addr;
76 static inline unsigned short __raw_readw(const volatile void __iomem *addr)
78 return *(volatile unsigned short __force *)addr;
80 static inline unsigned int __raw_readl(const volatile void __iomem *addr)
82 return *(volatile unsigned int __force *)addr;
84 static inline unsigned long __raw_readq(const volatile void __iomem *addr)
86 return *(volatile unsigned long __force *)addr;
88 static inline void __raw_writeb(unsigned char v, volatile void __iomem *addr)
90 *(volatile unsigned char __force *)addr = v;
92 static inline void __raw_writew(unsigned short v, volatile void __iomem *addr)
94 *(volatile unsigned short __force *)addr = v;
96 static inline void __raw_writel(unsigned int v, volatile void __iomem *addr)
98 *(volatile unsigned int __force *)addr = v;
100 static inline void __raw_writeq(unsigned long v, volatile void __iomem *addr)
102 *(volatile unsigned long __force *)addr = v;
104 #define readb(addr) eeh_readb(addr)
105 #define readw(addr) eeh_readw(addr)
106 #define readl(addr) eeh_readl(addr)
107 #define readq(addr) eeh_readq(addr)
108 #define writeb(data, addr) eeh_writeb((data), (addr))
109 #define writew(data, addr) eeh_writew((data), (addr))
110 #define writel(data, addr) eeh_writel((data), (addr))
111 #define writeq(data, addr) eeh_writeq((data), (addr))
112 #define memset_io(a,b,c) eeh_memset_io((a),(b),(c))
113 #define memcpy_fromio(a,b,c) eeh_memcpy_fromio((a),(b),(c))
114 #define memcpy_toio(a,b,c) eeh_memcpy_toio((a),(b),(c))
115 #define inb(port) eeh_inb((unsigned long)port)
116 #define outb(val, port) eeh_outb(val, (unsigned long)port)
117 #define inw(port) eeh_inw((unsigned long)port)
118 #define outw(val, port) eeh_outw(val, (unsigned long)port)
119 #define inl(port) eeh_inl((unsigned long)port)
120 #define outl(val, port) eeh_outl(val, (unsigned long)port)
123 * The insw/outsw/insl/outsl macros don't do byte-swapping.
124 * They are only used in practice for transferring buffers which
125 * are arrays of bytes, and byte-swapping is not appropriate in
126 * that case. - paulus */
127 #define insb(port, buf, ns) eeh_insb((port), (buf), (ns))
128 #define insw(port, buf, ns) eeh_insw_ns((port), (buf), (ns))
129 #define insl(port, buf, nl) eeh_insl_ns((port), (buf), (nl))
130 #define insw_ns(port, buf, ns) eeh_insw_ns((port), (buf), (ns))
131 #define insl_ns(port, buf, nl) eeh_insl_ns((port), (buf), (nl))
133 #define outsb(port, buf, ns) _outsb((u8 *)((port)+pci_io_base), (buf), (ns))
134 #define outsw(port, buf, ns) _outsw_ns((u16 *)((port)+pci_io_base), (buf), (ns))
135 #define outsl(port, buf, nl) _outsl_ns((u32 *)((port)+pci_io_base), (buf), (nl))
139 #define readb_relaxed(addr) readb(addr)
140 #define readw_relaxed(addr) readw(addr)
141 #define readl_relaxed(addr) readl(addr)
142 #define readq_relaxed(addr) readq(addr)
144 extern void _insb(volatile u8 *port, void *buf, int ns);
145 extern void _outsb(volatile u8 *port, const void *buf, int ns);
146 extern void _insw(volatile u16 *port, void *buf, int ns);
147 extern void _outsw(volatile u16 *port, const void *buf, int ns);
148 extern void _insl(volatile u32 *port, void *buf, int nl);
149 extern void _outsl(volatile u32 *port, const void *buf, int nl);
150 extern void _insw_ns(volatile u16 *port, void *buf, int ns);
151 extern void _outsw_ns(volatile u16 *port, const void *buf, int ns);
152 extern void _insl_ns(volatile u32 *port, void *buf, int nl);
153 extern void _outsl_ns(volatile u32 *port, const void *buf, int nl);
156 * output pause versions need a delay at least for the
157 * w83c105 ide controller in a p610.
159 #define inb_p(port) inb(port)
160 #define outb_p(val, port) (udelay(1), outb((val), (port)))
161 #define inw_p(port) inw(port)
162 #define outw_p(val, port) (udelay(1), outw((val), (port)))
163 #define inl_p(port) inl(port)
164 #define outl_p(val, port) (udelay(1), outl((val), (port)))
167 * The *_ns versions below don't do byte-swapping.
168 * Neither do the standard versions now, these are just here
171 #define outsw_ns(port, buf, ns) _outsw_ns((u16 *)((port)+pci_io_base), (buf), (ns))
172 #define outsl_ns(port, buf, nl) _outsl_ns((u32 *)((port)+pci_io_base), (buf), (nl))
175 #define IO_SPACE_LIMIT ~(0UL)
179 extern int __ioremap_explicit(unsigned long p_addr, unsigned long v_addr,
180 unsigned long size, unsigned long flags);
181 extern void __iomem *__ioremap(unsigned long address, unsigned long size,
182 unsigned long flags);
185 * ioremap - map bus memory into CPU space
186 * @address: bus address of the memory
187 * @size: size of the resource to map
189 * ioremap performs a platform specific sequence of operations to
190 * make bus memory CPU accessible via the readb/readw/readl/writeb/
191 * writew/writel functions and the other mmio helpers. The returned
192 * address is not guaranteed to be usable directly as a virtual
195 extern void __iomem *ioremap(unsigned long address, unsigned long size);
197 #define ioremap_nocache(addr, size) ioremap((addr), (size))
198 extern int iounmap_explicit(volatile void __iomem *addr, unsigned long size);
199 extern void iounmap(volatile void __iomem *addr);
200 extern void * reserve_phb_iospace(unsigned long size);
203 * virt_to_phys - map virtual addresses to physical
204 * @address: address to remap
206 * The returned physical address is the physical (CPU) mapping for
207 * the memory address given. It is only valid to use this function on
208 * addresses directly mapped or allocated via kmalloc.
210 * This function does not give bus mappings for DMA transfers. In
211 * almost all conceivable cases a device driver should not be using
214 static inline unsigned long virt_to_phys(volatile void * address)
216 return __pa((unsigned long)address);
220 * phys_to_virt - map physical address to virtual
221 * @address: address to remap
223 * The returned virtual address is a current CPU mapping for
224 * the memory address given. It is only valid to use this function on
225 * addresses that have a kernel mapping
227 * This function does not handle bus mappings for DMA transfers. In
228 * almost all conceivable cases a device driver should not be using
231 static inline void * phys_to_virt(unsigned long address)
233 return (void *)__va(address);
237 * Change "struct page" to physical address.
239 #define page_to_phys(page) (page_to_pfn(page) << PAGE_SHIFT)
241 /* We do NOT want virtual merging, it would put too much pressure on
242 * our iommu allocator. Instead, we want drivers to be smart enough
243 * to coalesce sglists that happen to have been mapped in a contiguous
246 #define BIO_VMERGE_BOUNDARY 0
248 #endif /* __KERNEL__ */
250 static inline void iosync(void)
252 __asm__ __volatile__ ("sync" : : : "memory");
255 /* Enforce in-order execution of data I/O.
256 * No distinction between read/write on PPC; use eieio for all three.
258 #define iobarrier_rw() eieio()
259 #define iobarrier_r() eieio()
260 #define iobarrier_w() eieio()
263 * 8, 16 and 32 bit, big and little endian I/O operations, with barrier.
264 * These routines do not perform EEH-related I/O address translation,
265 * and should not be used directly by device drivers. Use inb/readb
268 static inline int in_8(volatile unsigned char *addr)
272 __asm__ __volatile__("lbz%U1%X1 %0,%1; twi 0,%0,0; isync"
273 : "=r" (ret) : "m" (*addr));
277 static inline void out_8(volatile unsigned char *addr, int val)
279 __asm__ __volatile__("stb%U0%X0 %1,%0; sync"
280 : "=m" (*addr) : "r" (val));
283 static inline int in_le16(volatile unsigned short *addr)
287 __asm__ __volatile__("lhbrx %0,0,%1; twi 0,%0,0; isync"
288 : "=r" (ret) : "r" (addr), "m" (*addr));
292 static inline int in_be16(volatile unsigned short *addr)
296 __asm__ __volatile__("lhz%U1%X1 %0,%1; twi 0,%0,0; isync"
297 : "=r" (ret) : "m" (*addr));
301 static inline void out_le16(volatile unsigned short *addr, int val)
303 __asm__ __volatile__("sthbrx %1,0,%2; sync"
304 : "=m" (*addr) : "r" (val), "r" (addr));
307 static inline void out_be16(volatile unsigned short *addr, int val)
309 __asm__ __volatile__("sth%U0%X0 %1,%0; sync"
310 : "=m" (*addr) : "r" (val));
313 static inline unsigned in_le32(volatile unsigned *addr)
317 __asm__ __volatile__("lwbrx %0,0,%1; twi 0,%0,0; isync"
318 : "=r" (ret) : "r" (addr), "m" (*addr));
322 static inline unsigned in_be32(volatile unsigned *addr)
326 __asm__ __volatile__("lwz%U1%X1 %0,%1; twi 0,%0,0; isync"
327 : "=r" (ret) : "m" (*addr));
331 static inline void out_le32(volatile unsigned *addr, int val)
333 __asm__ __volatile__("stwbrx %1,0,%2; sync" : "=m" (*addr)
334 : "r" (val), "r" (addr));
337 static inline void out_be32(volatile unsigned *addr, int val)
339 __asm__ __volatile__("stw%U0%X0 %1,%0; sync"
340 : "=m" (*addr) : "r" (val));
343 static inline unsigned long in_le64(volatile unsigned long *addr)
345 unsigned long tmp, ret;
347 __asm__ __volatile__(
351 "rldimi %0,%1,5*8,1*8\n"
352 "rldimi %0,%1,3*8,2*8\n"
353 "rldimi %0,%1,1*8,3*8\n"
354 "rldimi %0,%1,7*8,4*8\n"
355 "rldicl %1,%1,32,0\n"
356 "rlwimi %0,%1,8,8,31\n"
357 "rlwimi %0,%1,24,16,23\n"
358 : "=r" (ret) , "=r" (tmp) : "b" (addr) , "m" (*addr));
362 static inline unsigned long in_be64(volatile unsigned long *addr)
366 __asm__ __volatile__("ld %0,0(%1); twi 0,%0,0; isync"
367 : "=r" (ret) : "m" (*addr));
371 static inline void out_le64(volatile unsigned long *addr, unsigned long val)
375 __asm__ __volatile__(
376 "rldimi %0,%1,5*8,1*8\n"
377 "rldimi %0,%1,3*8,2*8\n"
378 "rldimi %0,%1,1*8,3*8\n"
379 "rldimi %0,%1,7*8,4*8\n"
380 "rldicl %1,%1,32,0\n"
381 "rlwimi %0,%1,8,8,31\n"
382 "rlwimi %0,%1,24,16,23\n"
385 : "=&r" (tmp) , "=&r" (val) : "1" (val) , "b" (addr) , "m" (*addr));
388 static inline void out_be64(volatile unsigned long *addr, unsigned long val)
390 __asm__ __volatile__("std%U0%X0 %1,%0; sync" : "=m" (*addr) : "r" (val));
393 #ifndef CONFIG_PPC_ISERIES
400 * check_signature - find BIOS signatures
401 * @io_addr: mmio address to check
402 * @signature: signature block
403 * @length: length of signature
405 * Perform a signature comparison with the mmio address io_addr. This
406 * address should have been obtained by ioremap.
407 * Returns 1 on a match.
409 static inline int check_signature(const volatile void __iomem * io_addr,
410 const unsigned char *signature, int length)
413 #ifndef CONFIG_PPC_ISERIES
415 if (readb(io_addr) != *signature)
429 #define dma_cache_inv(_start,_size) do { } while (0)
430 #define dma_cache_wback(_start,_size) do { } while (0)
431 #define dma_cache_wback_inv(_start,_size) do { } while (0)
433 #endif /* __KERNEL__ */
435 #endif /* _PPC64_IO_H */