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
5 */
6
7 #ifndef _PPC_IO_H
8 #define _PPC_IO_H
9
10 #include <asm/byteorder.h>
11
12 #ifdef CONFIG_ADDR_MAP
13 #include <asm/global_data.h>
14 #include <addr_map.h>
15
16 DECLARE_GLOBAL_DATA_PTR;
17 #endif
18
19 #define SIO_CONFIG_RA 0x398
20 #define SIO_CONFIG_RD 0x399
21
22 #ifndef _IO_BASE
23 #define _IO_BASE 0
24 #endif
25
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))
33 #else
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))
38 #endif
39
40 /*
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
44 * that case. - paulus
45 */
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))
52
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))
60 #else
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))
65 #endif
66
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))
73
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);
84
85 /*
86 * The *_ns versions below don't do byte-swapping.
87 * Neither do the standard versions now, these are just here
88 * for older code.
89 */
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))
94
95 #define IO_SPACE_LIMIT ~0
96
97 #define memset_io(a,b,c) memset((void __force *)(a),(b),(c))
98 #define memcpy_fromio(a,b,c) memcpy((a),(void __force *)(b),(c))
99 #define memcpy_toio(a,b,c) memcpy((void __force *)(a),(b),(c))
100
101 /*
102 * Enforce In-order Execution of I/O:
103 * Acts as a barrier to ensure all previous I/O accesses have
104 * completed before any further ones are issued.
105 */
eieio(void)106 static inline void eieio(void)
107 {
108 __asm__ __volatile__ ("eieio" : : : "memory");
109 }
110
sync(void)111 static inline void sync(void)
112 {
113 __asm__ __volatile__ ("sync" : : : "memory");
114 }
115
isync(void)116 static inline void isync(void)
117 {
118 __asm__ __volatile__ ("isync" : : : "memory");
119 }
120
121 /* Enforce in-order execution of data I/O.
122 * No distinction between read/write on PPC; use eieio for all three.
123 */
124 #define iobarrier_rw() eieio()
125 #define iobarrier_r() eieio()
126 #define iobarrier_w() eieio()
127
128 #define mb() sync()
129 #define isb() isync()
130
131 /*
132 * Non ordered and non-swapping "raw" accessors
133 */
134 #define PCI_FIX_ADDR(addr) (addr)
135
__raw_readb(const volatile void __iomem * addr)136 static inline unsigned char __raw_readb(const volatile void __iomem *addr)
137 {
138 return *(volatile unsigned char *)PCI_FIX_ADDR(addr);
139 }
140 #define __raw_readb __raw_readb
141
__raw_readw(const volatile void __iomem * addr)142 static inline unsigned short __raw_readw(const volatile void __iomem *addr)
143 {
144 return *(volatile unsigned short *)PCI_FIX_ADDR(addr);
145 }
146 #define __raw_readw __raw_readw
147
__raw_readl(const volatile void __iomem * addr)148 static inline unsigned int __raw_readl(const volatile void __iomem *addr)
149 {
150 return *(volatile unsigned int *)PCI_FIX_ADDR(addr);
151 }
152 #define __raw_readl __raw_readl
153
__raw_writeb(unsigned char v,volatile void __iomem * addr)154 static inline void __raw_writeb(unsigned char v, volatile void __iomem *addr)
155 {
156 *(volatile unsigned char *)PCI_FIX_ADDR(addr) = v;
157 }
158 #define __raw_writeb __raw_writeb
159
__raw_writew(unsigned short v,volatile void __iomem * addr)160 static inline void __raw_writew(unsigned short v, volatile void __iomem *addr)
161 {
162 *(volatile unsigned short *)PCI_FIX_ADDR(addr) = v;
163 }
164 #define __raw_writew __raw_writew
165
__raw_writel(unsigned int v,volatile void __iomem * addr)166 static inline void __raw_writel(unsigned int v, volatile void __iomem *addr)
167 {
168 *(volatile unsigned int *)PCI_FIX_ADDR(addr) = v;
169 }
170 #define __raw_writel __raw_writel
171
172 /*
173 * 8, 16 and 32 bit, big and little endian I/O operations, with barrier.
174 *
175 * Read operations have additional twi & isync to make sure the read
176 * is actually performed (i.e. the data has come back) before we start
177 * executing any following instructions.
178 */
in_8(const volatile unsigned char __iomem * addr)179 static inline u8 in_8(const volatile unsigned char __iomem *addr)
180 {
181 u8 ret;
182
183 __asm__ __volatile__(
184 "sync; lbz%U1%X1 %0,%1;\n"
185 "twi 0,%0,0;\n"
186 "isync" : "=r" (ret) : "m" (*addr));
187 return ret;
188 }
189
out_8(volatile unsigned char __iomem * addr,u8 val)190 static inline void out_8(volatile unsigned char __iomem *addr, u8 val)
191 {
192 __asm__ __volatile__("sync;\n"
193 "stb%U0%X0 %1,%0;\n"
194 : "=m" (*addr)
195 : "r" (val));
196 }
197
in_le16(const volatile unsigned short __iomem * addr)198 static inline u16 in_le16(const volatile unsigned short __iomem *addr)
199 {
200 u16 ret;
201
202 __asm__ __volatile__("sync; lhbrx %0,0,%1;\n"
203 "twi 0,%0,0;\n"
204 "isync" : "=r" (ret) :
205 "r" (addr), "m" (*addr));
206 return ret;
207 }
208
in_be16(const volatile unsigned short __iomem * addr)209 static inline u16 in_be16(const volatile unsigned short __iomem *addr)
210 {
211 u16 ret;
212
213 __asm__ __volatile__("sync; lhz%U1%X1 %0,%1;\n"
214 "twi 0,%0,0;\n"
215 "isync" : "=r" (ret) : "m" (*addr));
216 return ret;
217 }
218
out_le16(volatile unsigned short __iomem * addr,u16 val)219 static inline void out_le16(volatile unsigned short __iomem *addr, u16 val)
220 {
221 __asm__ __volatile__("sync; sthbrx %1,0,%2" : "=m" (*addr) :
222 "r" (val), "r" (addr));
223 }
224
out_be16(volatile unsigned short __iomem * addr,u16 val)225 static inline void out_be16(volatile unsigned short __iomem *addr, u16 val)
226 {
227 __asm__ __volatile__("sync; sth%U0%X0 %1,%0" : "=m" (*addr) : "r" (val));
228 }
229
in_le32(const volatile unsigned __iomem * addr)230 static inline u32 in_le32(const volatile unsigned __iomem *addr)
231 {
232 u32 ret;
233
234 __asm__ __volatile__("sync; lwbrx %0,0,%1;\n"
235 "twi 0,%0,0;\n"
236 "isync" : "=r" (ret) :
237 "r" (addr), "m" (*addr));
238 return ret;
239 }
240
in_be32(const volatile unsigned __iomem * addr)241 static inline u32 in_be32(const volatile unsigned __iomem *addr)
242 {
243 u32 ret;
244
245 __asm__ __volatile__("sync; lwz%U1%X1 %0,%1;\n"
246 "twi 0,%0,0;\n"
247 "isync" : "=r" (ret) : "m" (*addr));
248 return ret;
249 }
250
out_le32(volatile unsigned __iomem * addr,u32 val)251 static inline void out_le32(volatile unsigned __iomem *addr, u32 val)
252 {
253 __asm__ __volatile__("sync; stwbrx %1,0,%2" : "=m" (*addr) :
254 "r" (val), "r" (addr));
255 }
256
out_be32(volatile unsigned __iomem * addr,u32 val)257 static inline void out_be32(volatile unsigned __iomem *addr, u32 val)
258 {
259 __asm__ __volatile__("sync; stw%U0%X0 %1,%0" : "=m" (*addr) : "r" (val));
260 }
261
262 /* Clear and set bits in one shot. These macros can be used to clear and
263 * set multiple bits in a register using a single call. These macros can
264 * also be used to set a multiple-bit bit pattern using a mask, by
265 * specifying the mask in the 'clear' parameter and the new bit pattern
266 * in the 'set' parameter.
267 */
268
269 #define clrbits(type, addr, clear) \
270 out_##type((addr), in_##type(addr) & ~(clear))
271
272 #define setbits(type, addr, set) \
273 out_##type((addr), in_##type(addr) | (set))
274
275 #define clrsetbits(type, addr, clear, set) \
276 out_##type((addr), (in_##type(addr) & ~(clear)) | (set))
277
278 #define clrbits_be32(addr, clear) clrbits(be32, addr, clear)
279 #define setbits_be32(addr, set) setbits(be32, addr, set)
280 #define clrsetbits_be32(addr, clear, set) clrsetbits(be32, addr, clear, set)
281
282 #define clrbits_le32(addr, clear) clrbits(le32, addr, clear)
283 #define setbits_le32(addr, set) setbits(le32, addr, set)
284 #define clrsetbits_le32(addr, clear, set) clrsetbits(le32, addr, clear, set)
285
286 #define clrbits_be16(addr, clear) clrbits(be16, addr, clear)
287 #define setbits_be16(addr, set) setbits(be16, addr, set)
288 #define clrsetbits_be16(addr, clear, set) clrsetbits(be16, addr, clear, set)
289
290 #define clrbits_le16(addr, clear) clrbits(le16, addr, clear)
291 #define setbits_le16(addr, set) setbits(le16, addr, set)
292 #define clrsetbits_le16(addr, clear, set) clrsetbits(le16, addr, clear, set)
293
294 #define clrbits_8(addr, clear) clrbits(8, addr, clear)
295 #define setbits_8(addr, set) setbits(8, addr, set)
296 #define clrsetbits_8(addr, clear, set) clrsetbits(8, addr, clear, set)
297
298 #define readb_be(addr) \
299 __raw_readb((__force unsigned *)(addr))
300 #define readw_be(addr) \
301 be16_to_cpu(__raw_readw((__force unsigned *)(addr)))
302 #define readl_be(addr) \
303 be32_to_cpu(__raw_readl((__force unsigned *)(addr)))
304 #define readq_be(addr) \
305 be64_to_cpu(__raw_readq((__force unsigned *)(addr)))
306
307 #define writeb_be(val, addr) \
308 __raw_writeb((val), (__force unsigned *)(addr))
309 #define writew_be(val, addr) \
310 __raw_writew(cpu_to_be16((val)), (__force unsigned *)(addr))
311 #define writel_be(val, addr) \
312 __raw_writel(cpu_to_be32((val)), (__force unsigned *)(addr))
313 #define writeq_be(val, addr) \
314 __raw_writeq(cpu_to_be64((val)), (__force unsigned *)(addr))
315
phys_to_virt(phys_addr_t paddr)316 static inline void *phys_to_virt(phys_addr_t paddr)
317 {
318 #ifdef CONFIG_ADDR_MAP
319 if (gd->flags & GD_FLG_RELOC)
320 return addrmap_phys_to_virt(paddr);
321 #endif
322 return (void *)((unsigned long)paddr);
323 }
324 #define phys_to_virt phys_to_virt
325
virt_to_phys(void * vaddr)326 static inline phys_addr_t virt_to_phys(void * vaddr)
327 {
328 #ifdef CONFIG_ADDR_MAP
329 if (gd->flags & GD_FLG_RELOC)
330 return addrmap_virt_to_phys(vaddr);
331 #endif
332 return (phys_addr_t)((unsigned long)vaddr);
333 }
334 #define virt_to_phys virt_to_phys
335
336 #include <asm-generic/io.h>
337
338 #endif
339