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wdenk041b1de2002-09-07 21:30:09 +00001/* 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
5 */
6
7#ifndef _PPC_IO_H
8#define _PPC_IO_H
9
wdenk041b1de2002-09-07 21:30:09 +000010#include <asm/byteorder.h>
11
Kumar Gala77c81152008-12-16 14:59:21 -060012#ifdef CONFIG_ADDR_MAP
13#include <addr_map.h>
14#endif
15
wdenk041b1de2002-09-07 21:30:09 +000016#define SIO_CONFIG_RA 0x398
17#define SIO_CONFIG_RD 0x399
18
Heiko Schocherf98984c2007-08-28 17:39:14 +020019#ifndef _IO_BASE
20#define _IO_BASE 0
21#endif
wdenk041b1de2002-09-07 21:30:09 +000022
23#define readb(addr) in_8((volatile u8 *)(addr))
24#define writeb(b,addr) out_8((volatile u8 *)(addr), (b))
25#if !defined(__BIG_ENDIAN)
26#define readw(addr) (*(volatile u16 *) (addr))
27#define readl(addr) (*(volatile u32 *) (addr))
28#define writew(b,addr) ((*(volatile u16 *) (addr)) = (b))
29#define writel(b,addr) ((*(volatile u32 *) (addr)) = (b))
30#else
31#define readw(addr) in_le16((volatile u16 *)(addr))
32#define readl(addr) in_le32((volatile u32 *)(addr))
33#define writew(b,addr) out_le16((volatile u16 *)(addr),(b))
34#define writel(b,addr) out_le32((volatile u32 *)(addr),(b))
35#endif
36
37/*
38 * The insw/outsw/insl/outsl macros don't do byte-swapping.
39 * They are only used in practice for transferring buffers which
40 * are arrays of bytes, and byte-swapping is not appropriate in
41 * that case. - paulus
42 */
43#define insb(port, buf, ns) _insb((u8 *)((port)+_IO_BASE), (buf), (ns))
44#define outsb(port, buf, ns) _outsb((u8 *)((port)+_IO_BASE), (buf), (ns))
45#define insw(port, buf, ns) _insw_ns((u16 *)((port)+_IO_BASE), (buf), (ns))
46#define outsw(port, buf, ns) _outsw_ns((u16 *)((port)+_IO_BASE), (buf), (ns))
47#define insl(port, buf, nl) _insl_ns((u32 *)((port)+_IO_BASE), (buf), (nl))
48#define outsl(port, buf, nl) _outsl_ns((u32 *)((port)+_IO_BASE), (buf), (nl))
49
50#define inb(port) in_8((u8 *)((port)+_IO_BASE))
51#define outb(val, port) out_8((u8 *)((port)+_IO_BASE), (val))
52#if !defined(__BIG_ENDIAN)
53#define inw(port) in_be16((u16 *)((port)+_IO_BASE))
54#define outw(val, port) out_be16((u16 *)((port)+_IO_BASE), (val))
55#define inl(port) in_be32((u32 *)((port)+_IO_BASE))
56#define outl(val, port) out_be32((u32 *)((port)+_IO_BASE), (val))
57#else
58#define inw(port) in_le16((u16 *)((port)+_IO_BASE))
59#define outw(val, port) out_le16((u16 *)((port)+_IO_BASE), (val))
60#define inl(port) in_le32((u32 *)((port)+_IO_BASE))
61#define outl(val, port) out_le32((u32 *)((port)+_IO_BASE), (val))
62#endif
63
64#define inb_p(port) in_8((u8 *)((port)+_IO_BASE))
65#define outb_p(val, port) out_8((u8 *)((port)+_IO_BASE), (val))
66#define inw_p(port) in_le16((u16 *)((port)+_IO_BASE))
67#define outw_p(val, port) out_le16((u16 *)((port)+_IO_BASE), (val))
68#define inl_p(port) in_le32((u32 *)((port)+_IO_BASE))
69#define outl_p(val, port) out_le32((u32 *)((port)+_IO_BASE), (val))
70
71extern void _insb(volatile u8 *port, void *buf, int ns);
72extern void _outsb(volatile u8 *port, const void *buf, int ns);
73extern void _insw(volatile u16 *port, void *buf, int ns);
74extern void _outsw(volatile u16 *port, const void *buf, int ns);
75extern void _insl(volatile u32 *port, void *buf, int nl);
76extern void _outsl(volatile u32 *port, const void *buf, int nl);
77extern void _insw_ns(volatile u16 *port, void *buf, int ns);
78extern void _outsw_ns(volatile u16 *port, const void *buf, int ns);
79extern void _insl_ns(volatile u32 *port, void *buf, int nl);
80extern void _outsl_ns(volatile u32 *port, const void *buf, int nl);
81
82/*
83 * The *_ns versions below don't do byte-swapping.
84 * Neither do the standard versions now, these are just here
85 * for older code.
86 */
87#define insw_ns(port, buf, ns) _insw_ns((u16 *)((port)+_IO_BASE), (buf), (ns))
88#define outsw_ns(port, buf, ns) _outsw_ns((u16 *)((port)+_IO_BASE), (buf), (ns))
89#define insl_ns(port, buf, nl) _insl_ns((u32 *)((port)+_IO_BASE), (buf), (nl))
90#define outsl_ns(port, buf, nl) _outsl_ns((u32 *)((port)+_IO_BASE), (buf), (nl))
91
92
93#define IO_SPACE_LIMIT ~0
94
95#define memset_io(a,b,c) memset((void *)(a),(b),(c))
96#define memcpy_fromio(a,b,c) memcpy((a),(void *)(b),(c))
97#define memcpy_toio(a,b,c) memcpy((void *)(a),(b),(c))
98
99/*
100 * Enforce In-order Execution of I/O:
101 * Acts as a barrier to ensure all previous I/O accesses have
102 * completed before any further ones are issued.
103 */
Haiying Wang3a197b22007-02-21 16:52:31 +0100104static inline void eieio(void)
105{
106 __asm__ __volatile__ ("eieio" : : : "memory");
107}
108
109static inline void sync(void)
110{
111 __asm__ __volatile__ ("sync" : : : "memory");
112}
wdenk041b1de2002-09-07 21:30:09 +0000113
Stefan Roese53ad0212007-06-01 15:16:58 +0200114static inline void isync(void)
115{
116 __asm__ __volatile__ ("isync" : : : "memory");
117}
118
wdenk041b1de2002-09-07 21:30:09 +0000119/* Enforce in-order execution of data I/O.
120 * No distinction between read/write on PPC; use eieio for all three.
121 */
122#define iobarrier_rw() eieio()
123#define iobarrier_r() eieio()
124#define iobarrier_w() eieio()
125
York Sun8340e7a2014-06-23 15:36:44 -0700126#define mb() sync()
127#define isb() isync()
128
wdenk041b1de2002-09-07 21:30:09 +0000129/*
Haavard Skinnemoen812711c2007-12-13 12:56:31 +0100130 * Non ordered and non-swapping "raw" accessors
131 */
Haavard Skinnemoen812711c2007-12-13 12:56:31 +0100132#define PCI_FIX_ADDR(addr) (addr)
133
134static inline unsigned char __raw_readb(const volatile void __iomem *addr)
135{
136 return *(volatile unsigned char *)PCI_FIX_ADDR(addr);
137}
138static inline unsigned short __raw_readw(const volatile void __iomem *addr)
139{
140 return *(volatile unsigned short *)PCI_FIX_ADDR(addr);
141}
142static inline unsigned int __raw_readl(const volatile void __iomem *addr)
143{
144 return *(volatile unsigned int *)PCI_FIX_ADDR(addr);
145}
146static inline void __raw_writeb(unsigned char v, volatile void __iomem *addr)
147{
148 *(volatile unsigned char *)PCI_FIX_ADDR(addr) = v;
149}
150static inline void __raw_writew(unsigned short v, volatile void __iomem *addr)
151{
152 *(volatile unsigned short *)PCI_FIX_ADDR(addr) = v;
153}
154static inline void __raw_writel(unsigned int v, volatile void __iomem *addr)
155{
156 *(volatile unsigned int *)PCI_FIX_ADDR(addr) = v;
157}
158
159/*
wdenk041b1de2002-09-07 21:30:09 +0000160 * 8, 16 and 32 bit, big and little endian I/O operations, with barrier.
Stefan Roese53ad0212007-06-01 15:16:58 +0200161 *
162 * Read operations have additional twi & isync to make sure the read
163 * is actually performed (i.e. the data has come back) before we start
164 * executing any following instructions.
wdenk041b1de2002-09-07 21:30:09 +0000165 */
Måns Rullgård44d06772015-11-06 12:44:01 +0000166static inline u8 in_8(const volatile unsigned char __iomem *addr)
wdenk041b1de2002-09-07 21:30:09 +0000167{
Prabhakar Kushwahaa16a5cc2012-04-10 22:48:59 +0000168 u8 ret;
wdenk041b1de2002-09-07 21:30:09 +0000169
Stefan Roese53ad0212007-06-01 15:16:58 +0200170 __asm__ __volatile__(
171 "sync; lbz%U1%X1 %0,%1;\n"
172 "twi 0,%0,0;\n"
173 "isync" : "=r" (ret) : "m" (*addr));
174 return ret;
wdenk041b1de2002-09-07 21:30:09 +0000175}
176
Måns Rullgård44d06772015-11-06 12:44:01 +0000177static inline void out_8(volatile unsigned char __iomem *addr, u8 val)
wdenk041b1de2002-09-07 21:30:09 +0000178{
Timur Tabi1fade702010-12-03 09:03:46 +0000179 __asm__ __volatile__("sync;\n"
180 "stb%U0%X0 %1,%0;\n"
181 : "=m" (*addr)
182 : "r" (val));
wdenk041b1de2002-09-07 21:30:09 +0000183}
184
Måns Rullgård44d06772015-11-06 12:44:01 +0000185static inline u16 in_le16(const volatile unsigned short __iomem *addr)
wdenk041b1de2002-09-07 21:30:09 +0000186{
Prabhakar Kushwahaa16a5cc2012-04-10 22:48:59 +0000187 u16 ret;
wdenk041b1de2002-09-07 21:30:09 +0000188
Stefan Roese53ad0212007-06-01 15:16:58 +0200189 __asm__ __volatile__("sync; lhbrx %0,0,%1;\n"
190 "twi 0,%0,0;\n"
191 "isync" : "=r" (ret) :
192 "r" (addr), "m" (*addr));
193 return ret;
wdenk041b1de2002-09-07 21:30:09 +0000194}
195
Måns Rullgård44d06772015-11-06 12:44:01 +0000196static inline u16 in_be16(const volatile unsigned short __iomem *addr)
wdenk041b1de2002-09-07 21:30:09 +0000197{
Prabhakar Kushwahaa16a5cc2012-04-10 22:48:59 +0000198 u16 ret;
wdenk041b1de2002-09-07 21:30:09 +0000199
Stefan Roese53ad0212007-06-01 15:16:58 +0200200 __asm__ __volatile__("sync; lhz%U1%X1 %0,%1;\n"
201 "twi 0,%0,0;\n"
202 "isync" : "=r" (ret) : "m" (*addr));
203 return ret;
wdenk041b1de2002-09-07 21:30:09 +0000204}
205
Måns Rullgård44d06772015-11-06 12:44:01 +0000206static inline void out_le16(volatile unsigned short __iomem *addr, u16 val)
wdenk041b1de2002-09-07 21:30:09 +0000207{
Stefan Roese53ad0212007-06-01 15:16:58 +0200208 __asm__ __volatile__("sync; sthbrx %1,0,%2" : "=m" (*addr) :
209 "r" (val), "r" (addr));
wdenk041b1de2002-09-07 21:30:09 +0000210}
211
Måns Rullgård44d06772015-11-06 12:44:01 +0000212static inline void out_be16(volatile unsigned short __iomem *addr, u16 val)
wdenk041b1de2002-09-07 21:30:09 +0000213{
Stefan Roese53ad0212007-06-01 15:16:58 +0200214 __asm__ __volatile__("sync; sth%U0%X0 %1,%0" : "=m" (*addr) : "r" (val));
wdenk041b1de2002-09-07 21:30:09 +0000215}
216
Måns Rullgård44d06772015-11-06 12:44:01 +0000217static inline u32 in_le32(const volatile unsigned __iomem *addr)
wdenk041b1de2002-09-07 21:30:09 +0000218{
Prabhakar Kushwahaa16a5cc2012-04-10 22:48:59 +0000219 u32 ret;
wdenk041b1de2002-09-07 21:30:09 +0000220
Stefan Roese53ad0212007-06-01 15:16:58 +0200221 __asm__ __volatile__("sync; lwbrx %0,0,%1;\n"
222 "twi 0,%0,0;\n"
223 "isync" : "=r" (ret) :
224 "r" (addr), "m" (*addr));
225 return ret;
wdenk041b1de2002-09-07 21:30:09 +0000226}
227
Måns Rullgård44d06772015-11-06 12:44:01 +0000228static inline u32 in_be32(const volatile unsigned __iomem *addr)
wdenk041b1de2002-09-07 21:30:09 +0000229{
Prabhakar Kushwahaa16a5cc2012-04-10 22:48:59 +0000230 u32 ret;
wdenk041b1de2002-09-07 21:30:09 +0000231
Stefan Roese53ad0212007-06-01 15:16:58 +0200232 __asm__ __volatile__("sync; lwz%U1%X1 %0,%1;\n"
233 "twi 0,%0,0;\n"
234 "isync" : "=r" (ret) : "m" (*addr));
235 return ret;
wdenk041b1de2002-09-07 21:30:09 +0000236}
237
Måns Rullgård44d06772015-11-06 12:44:01 +0000238static inline void out_le32(volatile unsigned __iomem *addr, u32 val)
wdenk041b1de2002-09-07 21:30:09 +0000239{
Stefan Roese53ad0212007-06-01 15:16:58 +0200240 __asm__ __volatile__("sync; stwbrx %1,0,%2" : "=m" (*addr) :
241 "r" (val), "r" (addr));
wdenk041b1de2002-09-07 21:30:09 +0000242}
243
Måns Rullgård44d06772015-11-06 12:44:01 +0000244static inline void out_be32(volatile unsigned __iomem *addr, u32 val)
wdenk041b1de2002-09-07 21:30:09 +0000245{
Stefan Roese53ad0212007-06-01 15:16:58 +0200246 __asm__ __volatile__("sync; stw%U0%X0 %1,%0" : "=m" (*addr) : "r" (val));
wdenk041b1de2002-09-07 21:30:09 +0000247}
248
Wolfgang Grandegger39841512008-06-04 12:45:22 +0200249/* Clear and set bits in one shot. These macros can be used to clear and
250 * set multiple bits in a register using a single call. These macros can
251 * also be used to set a multiple-bit bit pattern using a mask, by
252 * specifying the mask in the 'clear' parameter and the new bit pattern
253 * in the 'set' parameter.
254 */
255
256#define clrbits(type, addr, clear) \
257 out_##type((addr), in_##type(addr) & ~(clear))
258
259#define setbits(type, addr, set) \
260 out_##type((addr), in_##type(addr) | (set))
261
262#define clrsetbits(type, addr, clear, set) \
263 out_##type((addr), (in_##type(addr) & ~(clear)) | (set))
264
265#define clrbits_be32(addr, clear) clrbits(be32, addr, clear)
266#define setbits_be32(addr, set) setbits(be32, addr, set)
267#define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set)
268
269#define clrbits_le32(addr, clear) clrbits(le32, addr, clear)
270#define setbits_le32(addr, set) setbits(le32, addr, set)
271#define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set)
272
273#define clrbits_be16(addr, clear) clrbits(be16, addr, clear)
274#define setbits_be16(addr, set) setbits(be16, addr, set)
275#define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set)
276
277#define clrbits_le16(addr, clear) clrbits(le16, addr, clear)
278#define setbits_le16(addr, set) setbits(le16, addr, set)
279#define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set)
280
281#define clrbits_8(addr, clear) clrbits(8, addr, clear)
282#define setbits_8(addr, set) setbits(8, addr, set)
283#define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set)
284
Haavard Skinnemoen4d7d6932007-12-13 12:56:33 +0100285/*
286 * Given a physical address and a length, return a virtual address
287 * that can be used to access the memory range with the caching
288 * properties specified by "flags".
289 */
Haavard Skinnemoen4d7d6932007-12-13 12:56:33 +0100290#define MAP_NOCACHE (0)
291#define MAP_WRCOMBINE (0)
292#define MAP_WRBACK (0)
293#define MAP_WRTHROUGH (0)
294
295static inline void *
296map_physmem(phys_addr_t paddr, unsigned long len, unsigned long flags)
297{
Kumar Gala77c81152008-12-16 14:59:21 -0600298#ifdef CONFIG_ADDR_MAP
Timur Tabi7b6e8052012-05-04 12:21:30 +0000299 return addrmap_phys_to_virt(paddr);
Kumar Gala77c81152008-12-16 14:59:21 -0600300#else
Becky Brucef3612a72008-05-07 13:28:16 -0500301 return (void *)((unsigned long)paddr);
Kumar Gala77c81152008-12-16 14:59:21 -0600302#endif
Haavard Skinnemoen4d7d6932007-12-13 12:56:33 +0100303}
304
305/*
306 * Take down a mapping set up by map_physmem().
307 */
308static inline void unmap_physmem(void *vaddr, unsigned long flags)
309{
310
311}
312
Kumar Gala65e43a12008-12-13 17:20:27 -0600313static inline phys_addr_t virt_to_phys(void * vaddr)
314{
Kumar Gala77c81152008-12-16 14:59:21 -0600315#ifdef CONFIG_ADDR_MAP
316 return addrmap_virt_to_phys(vaddr);
317#else
Becky Bruceb1ffece2008-12-03 23:04:37 -0600318 return (phys_addr_t)((unsigned long)vaddr);
Kumar Gala77c81152008-12-16 14:59:21 -0600319#endif
Kumar Gala65e43a12008-12-13 17:20:27 -0600320}
321
wdenk041b1de2002-09-07 21:30:09 +0000322#endif