4 /* USE_HPPA_IOREMAP IS THE MAGIC FLAG TO ENABLE OR DISABLE REAL IOREMAP() FUNCTIONALITY */
5 /* FOR 712 or 715 MACHINES THIS SHOULD BE ENABLED,
6 NEWER MACHINES STILL HAVE SOME ISSUES IN THE SCSI AND/OR NETWORK DRIVERS AND
7 BECAUSE OF THAT I WILL LEAVE IT DISABLED FOR NOW <deller@gmx.de> */
8 /* WHEN THOSE ISSUES ARE SOLVED, USE_HPPA_IOREMAP WILL GO AWAY */
9 #define USE_HPPA_IOREMAP 0
12 #include <linux/config.h>
13 #include <linux/types.h>
14 #include <asm/pgtable.h>
16 extern unsigned long parisc_vmerge_boundary
;
17 extern unsigned long parisc_vmerge_max_size
;
19 #define BIO_VMERGE_BOUNDARY parisc_vmerge_boundary
20 #define BIO_VMERGE_MAX_SIZE parisc_vmerge_max_size
22 #define virt_to_phys(a) ((unsigned long)__pa(a))
23 #define phys_to_virt(a) __va(a)
24 #define virt_to_bus virt_to_phys
25 #define bus_to_virt phys_to_virt
27 /* Memory mapped IO */
29 extern void * __ioremap(unsigned long offset
, unsigned long size
, unsigned long flags
);
31 extern inline void * ioremap(unsigned long offset
, unsigned long size
)
33 return __ioremap(offset
, size
, 0);
37 * This one maps high address device memory and turns off caching for that area.
38 * it's useful if some control registers are in such an area and write combining
39 * or read caching is not desirable:
41 extern inline void * ioremap_nocache(unsigned long offset
, unsigned long size
)
43 return __ioremap(offset
, size
, _PAGE_NO_CACHE
/* _PAGE_PCD */);
46 extern void iounmap(void *addr
);
49 * __raw_ variants have no defined meaning. on hppa, it means `i was
50 * too lazy to ioremap first'. kind of like isa_, except that there's
51 * no additional base address to add on.
53 #define __raw_readb(a) ___raw_readb((unsigned long)(a))
54 extern __inline__
unsigned char ___raw_readb(unsigned long addr
)
63 : "=&r" (flags
), "=r" (ret
) : "r" (addr
) );
68 #define __raw_readw(a) ___raw_readw((unsigned long)(a))
69 extern __inline__
unsigned short ___raw_readw(unsigned long addr
)
78 : "=&r" (flags
), "=r" (ret
) : "r" (addr
) );
83 #define __raw_readl(a) ___raw_readl((unsigned long)(a))
84 extern __inline__
unsigned int ___raw_readl(unsigned long addr
)
90 : "=r" (ret
) : "r" (addr
) );
95 #define __raw_readq(a) ___raw_readq((unsigned long)(a))
96 extern __inline__
unsigned long long ___raw_readq(unsigned long addr
)
98 unsigned long long ret
;
100 __asm__
__volatile__(
102 : "=r" (ret
) : "r" (addr
) );
104 /* two reads may have side effects.. */
105 ret
= ((u64
) __raw_readl(addr
)) << 32;
106 ret
|= __raw_readl(addr
+4);
111 #define __raw_writeb(a,b) ___raw_writeb(a, (unsigned long)(b))
112 extern __inline__
void ___raw_writeb(unsigned char val
, unsigned long addr
)
115 __asm__
__volatile__(
119 : "=&r" (flags
) : "r" (val
), "r" (addr
) );
122 #define __raw_writew(a,b) ___raw_writew(a, (unsigned long)(b))
123 extern __inline__
void ___raw_writew(unsigned short val
, unsigned long addr
)
126 __asm__
__volatile__(
130 : "=&r" (flags
) : "r" (val
), "r" (addr
) );
133 #define __raw_writel(a,b) ___raw_writel(a, (unsigned long)(b))
134 extern __inline__
void ___raw_writel(unsigned int val
, unsigned long addr
)
136 __asm__
__volatile__(
138 : : "r" (val
), "r" (addr
) );
141 #define __raw_writeq(a,b) ___raw_writeq(a, (unsigned long)(b))
142 extern __inline__
void ___raw_writeq(unsigned long long val
, unsigned long addr
)
145 __asm__
__volatile__(
147 : : "r" (val
), "r" (addr
) );
149 /* two writes may have side effects.. */
150 __raw_writel(val
>> 32, addr
);
151 __raw_writel(val
, addr
+4);
156 #define readb(addr) (*(volatile unsigned char *) (addr))
157 #define readw(addr) (*(volatile unsigned short *) (addr))
158 #define readl(addr) (*(volatile unsigned int *) (addr))
159 #define readq(addr) (*(volatile u64 *) (addr))
160 #define writeb(b,addr) (*(volatile unsigned char *) (addr) = (b))
161 #define writew(b,addr) (*(volatile unsigned short *) (addr) = (b))
162 #define writel(b,addr) (*(volatile unsigned int *) (addr) = (b))
163 #define writeq(b,addr) (*(volatile u64 *) (addr) = (b))
164 #else /* !USE_HPPA_IOREMAP */
165 #define readb(addr) __raw_readb(addr)
166 #define readw(addr) le16_to_cpu(__raw_readw(addr))
167 #define readl(addr) le32_to_cpu(__raw_readl(addr))
168 #define readq(addr) le64_to_cpu(__raw_readq(addr))
169 #define writeb(b,addr) __raw_writeb(b,addr)
170 #define writew(b,addr) __raw_writew(cpu_to_le16(b),addr)
171 #define writel(b,addr) __raw_writel(cpu_to_le32(b),addr)
172 #define writeq(b,addr) __raw_writeq(cpu_to_le64(b),addr)
173 #endif /* !USE_HPPA_IOREMAP */
175 #define readb_relaxed(addr) readb(addr)
176 #define readw_relaxed(addr) readw(addr)
177 #define readl_relaxed(addr) readl(addr)
178 #define readq_relaxed(addr) readq(addr)
180 extern void __memcpy_fromio(unsigned long dest
, unsigned long src
, int count
);
181 extern void __memcpy_toio(unsigned long dest
, unsigned long src
, int count
);
182 extern void __memset_io(unsigned long dest
, char fill
, int count
);
184 #define memcpy_fromio(a,b,c) __memcpy_fromio((unsigned long)(a), (unsigned long)(b), (c))
185 #define memcpy_toio(a,b,c) __memcpy_toio((unsigned long)(a), (unsigned long)(b), (c))
186 #define memset_io(a,b,c) __memset_io((unsigned long)(a), (b), (c))
188 /* Support old drivers which don't ioremap.
189 * NB this interface is scheduled to disappear in 2.5
192 #define EISA_BASE 0xfffffffffc000000UL
193 #define isa_readb(a) readb(EISA_BASE | (a))
194 #define isa_readw(a) readw(EISA_BASE | (a))
195 #define isa_readl(a) readl(EISA_BASE | (a))
196 #define isa_writeb(b,a) writeb((b), EISA_BASE | (a))
197 #define isa_writew(b,a) writew((b), EISA_BASE | (a))
198 #define isa_writel(b,a) writel((b), EISA_BASE | (a))
199 #define isa_memset_io(a,b,c) memset_io(EISA_BASE | (a), (b), (c))
200 #define isa_memcpy_fromio(a,b,c) memcpy_fromio((a), EISA_BASE | (b), (c))
201 #define isa_memcpy_toio(a,b,c) memcpy_toio(EISA_BASE | (a), (b), (c))
204 * These functions support PA-RISC drivers which don't yet call ioremap().
205 * They will disappear once the last of these drivers is gone.
207 #define gsc_readb(x) __raw_readb(x)
208 #define gsc_readw(x) __raw_readw(x)
209 #define gsc_readl(x) __raw_readl(x)
210 #define gsc_writeb(x, y) __raw_writeb(x, y)
211 #define gsc_writew(x, y) __raw_writew(x, y)
212 #define gsc_writel(x, y) __raw_writel(x, y)
216 * XXX - We don't have csum_partial_copy_fromio() yet, so we cheat here and
217 * just copy it. The net code will then do the checksum later. Presently
218 * only used by some shared memory 8390 Ethernet cards anyway.
221 #define eth_io_copy_and_sum(skb,src,len,unused) \
222 memcpy_fromio((skb)->data,(src),(len))
223 #define isa_eth_io_copy_and_sum(skb,src,len,unused) \
224 isa_memcpy_fromio((skb)->data,(src),(len))
235 extern unsigned char eisa_in8(unsigned short port
);
236 extern unsigned short eisa_in16(unsigned short port
);
237 extern unsigned int eisa_in32(unsigned short port
);
238 extern void eisa_out8(unsigned char data
, unsigned short port
);
239 extern void eisa_out16(unsigned short data
, unsigned short port
);
240 extern void eisa_out32(unsigned int data
, unsigned short port
);
242 #if defined(CONFIG_PCI)
243 extern unsigned char inb(int addr
);
244 extern unsigned short inw(int addr
);
245 extern unsigned int inl(int addr
);
247 extern void outb(unsigned char b
, int addr
);
248 extern void outw(unsigned short b
, int addr
);
249 extern void outl(unsigned int b
, int addr
);
250 #elif defined(CONFIG_EISA)
252 #define inw eisa_in16
253 #define inl eisa_in32
254 #define outb eisa_out8
255 #define outw eisa_out16
256 #define outl eisa_out32
258 static inline char inb(unsigned long addr
)
264 static inline short inw(unsigned long addr
)
270 static inline int inl(unsigned long addr
)
276 #define outb(x, y) BUG()
277 #define outw(x, y) BUG()
278 #define outl(x, y) BUG()
282 * String versions of in/out ops:
284 extern void insb (unsigned long port
, void *dst
, unsigned long count
);
285 extern void insw (unsigned long port
, void *dst
, unsigned long count
);
286 extern void insl (unsigned long port
, void *dst
, unsigned long count
);
287 extern void outsb (unsigned long port
, const void *src
, unsigned long count
);
288 extern void outsw (unsigned long port
, const void *src
, unsigned long count
);
289 extern void outsl (unsigned long port
, const void *src
, unsigned long count
);
292 /* IO Port space is : BBiiii where BB is HBA number. */
293 #define IO_SPACE_LIMIT 0x00ffffff
296 #define dma_cache_inv(_start,_size) do { flush_kernel_dcache_range(_start,_size); } while (0)
297 #define dma_cache_wback(_start,_size) do { flush_kernel_dcache_range(_start,_size); } while (0)
298 #define dma_cache_wback_inv(_start,_size) do { flush_kernel_dcache_range(_start,_size); } while (0)
300 /* PA machines have an MM I/O space from 0xf0000000-0xffffffff in 32
301 * bit mode and from 0xfffffffff0000000-0xfffffffffffffff in 64 bit
302 * mode (essentially just sign extending. This macro takes in a 32
303 * bit I/O address (still with the leading f) and outputs the correct
304 * value for either 32 or 64 bit mode */
305 #define F_EXTEND(x) ((unsigned long)((x) | (0xffffffff00000000ULL)))