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1633 |
jcastillo |
#ifndef _M68K_IO_H
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#define _M68K_IO_H
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| 4 |
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/*
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* readX/writeX() are used to access memory mapped devices. On some
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* architectures the memory mapped IO stuff needs to be accessed
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* differently. On the m68k architecture, we just read/write the
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* memory location directly.
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*/
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/* ++roman: The assignments to temp. vars avoid that gcc sometimes generates
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* two accesses to memory, which may be undesireable for some devices.
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*/
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#define readb(addr) \
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({ unsigned char __v = (*(volatile unsigned char *) (addr)); __v; })
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#define readw(addr) \
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({ unsigned short __v = (*(volatile unsigned short *) (addr)); __v; })
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#define readl(addr) \
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({ unsigned int __v = (*(volatile unsigned int *) (addr)); __v; })
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#define writeb(b,addr) ((*(volatile unsigned char *) (addr)) = (b))
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#define writew(b,addr) ((*(volatile unsigned short *) (addr)) = (b))
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#define writel(b,addr) ((*(volatile unsigned int *) (addr)) = (b))
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#if 0
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/* There is no difference between I/O and memory on 68k, these are the same */
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#define inb(addr) \
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({ unsigned char __v = (*(volatile unsigned char *) (addr)); printk("inb(%x)=%02x\n", (addr), __v); __v; })
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#define inw(addr) \
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({ unsigned short __v = (*(volatile unsigned short *) (addr)); printk("inw(%x)=%04x\n", (addr), __v); __v; })
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#define inl(addr) \
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({ unsigned int __v = (*(volatile unsigned int *) (addr)); printk("inl(%x)=%08x\n", (addr), __v); __v; })
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#define outb(b,addr) { ((*(volatile unsigned char *) (addr)) = (b)) ; printk("outb(%x)=%02x\n", (addr), (b)); }
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#define outw(b,addr) { ((*(volatile unsigned short *) (addr)) = (b)) ; printk("outw(%x)=%04x\n", (addr), (b)); }
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#define outl(b,addr) { ((*(volatile unsigned int *) (addr)) = (b)) ; printk("outl(%x)=%08x\n", (addr), (b)); }
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#else
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/* There is no difference between I/O and memory on 68k, these are the same */
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#define inb(addr) \
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({ unsigned char __v = (*(volatile unsigned char *) (addr)); __v; })
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#define inw(addr) \
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({ unsigned short __v = (*(volatile unsigned short *) (addr)); __v; })
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#define inl(addr) \
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({ unsigned int __v = (*(volatile unsigned int *) (addr)); __v; })
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| 48 |
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#define outb(b,addr) ((*(volatile unsigned char *) (addr)) = (b))
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#define outw(b,addr) ((*(volatile unsigned short *) (addr)) = (b))
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#define outl(b,addr) ((*(volatile unsigned int *) (addr)) = (b))
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#endif
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#ifdef CONFIG_COLDFIRE
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| 56 |
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#define inb_p inb
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#define inw_p inw
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#define outb_p outb
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#define outw_p outw
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| 61 |
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static inline void outsb(void *addr, void *buf, int len)
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{
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volatile unsigned char *ap = (volatile unsigned char *) addr;
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unsigned char *bp = (unsigned char *) buf;
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while (len--)
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*ap = *bp++;
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}
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static inline void outsw(void *addr, void *buf, int len)
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{
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volatile unsigned short *ap = (volatile unsigned short *) addr;
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unsigned short *bp = (unsigned short *) buf;
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while (len--)
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*ap = *bp++;
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}
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static inline void outsl(void *addr, void *buf, int len)
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{
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volatile unsigned int *ap = (volatile unsigned int *) addr;
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unsigned int *bp = (unsigned int *) buf;
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while (len--)
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*ap = *bp++;
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}
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static inline void insb(void *addr, void *buf, int len)
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{
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volatile unsigned char *ap = (volatile unsigned char *) addr;
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unsigned char *bp = (unsigned char *) buf;
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while (len--)
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*bp++ = *ap;
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}
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| 94 |
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static inline void insw(void *addr, void *buf, int len)
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{
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volatile unsigned short *ap = (volatile unsigned short *) addr;
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unsigned short *bp = (unsigned short *) buf;
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while (len--)
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*bp++ = *ap;
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}
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static inline void insl(void *addr, void *buf, int len)
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{
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volatile unsigned int *ap = (volatile unsigned int *) addr;
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unsigned int *bp = (unsigned int *) buf;
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while (len--)
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*bp++ = *ap;
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}
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#else
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/* These try and unroll 64 transfers, then 8, then 1 at a time */
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static inline void outsw(void *addr,void *buf,int len)
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{
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unsigned short * __e = (unsigned short *)(buf) + (len);
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unsigned short * __p = (unsigned short *)(buf);
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while (__p + 32 < __e) {
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asm volatile ("
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movem.w %0@+, %%d4-%%d7;
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rol.w #8, %%d4;
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rol.w #8, %%d5;
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| 122 |
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rol.w #8, %%d6;
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| 123 |
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rol.w #8, %%d7;
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movem.w %%d4-%%d5, %2@;
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| 125 |
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movem.w %%d6-%%d7, %2@;
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| 126 |
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| 127 |
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movem.w %0@+, %%d4-%%d7;
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| 128 |
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rol.w #8, %%d4;
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| 129 |
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rol.w #8, %%d5;
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| 130 |
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rol.w #8, %%d6;
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| 131 |
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rol.w #8, %%d7;
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| 132 |
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movem.w %%d4-%%d5, %2@;
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| 133 |
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movem.w %%d6-%%d7, %2@;
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| 134 |
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| 135 |
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movem.w %0@+, %%d4-%%d7;
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| 136 |
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rol.w #8, %%d4;
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| 137 |
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rol.w #8, %%d5;
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| 138 |
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rol.w #8, %%d6;
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| 139 |
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rol.w #8, %%d7;
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| 140 |
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movem.w %%d4-%%d5, %2@;
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| 141 |
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movem.w %%d6-%%d7, %2@;
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| 142 |
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| 143 |
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movem.w %0@+, %%d4-%%d7;
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| 144 |
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rol.w #8, %%d4;
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| 145 |
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rol.w #8, %%d5;
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| 146 |
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rol.w #8, %%d6;
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| 147 |
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rol.w #8, %%d7;
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| 148 |
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movem.w %%d4-%%d5, %2@;
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| 149 |
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movem.w %%d6-%%d7, %2@;
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| 150 |
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| 151 |
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movem.w %0@+, %%d4-%%d7;
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| 152 |
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rol.w #8, %%d4;
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rol.w #8, %%d5;
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| 154 |
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rol.w #8, %%d6;
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| 155 |
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rol.w #8, %%d7;
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| 156 |
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movem.w %%d4-%%d5, %2@;
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| 157 |
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movem.w %%d6-%%d7, %2@;
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| 158 |
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| 159 |
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movem.w %0@+, %%d4-%%d7;
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| 160 |
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rol.w #8, %%d4;
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rol.w #8, %%d5;
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| 162 |
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rol.w #8, %%d6;
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| 163 |
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rol.w #8, %%d7;
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| 164 |
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movem.w %%d4-%%d5, %2@;
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| 165 |
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movem.w %%d6-%%d7, %2@;
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| 166 |
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| 167 |
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movem.w %0@+, %%d4-%%d7;
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| 168 |
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rol.w #8, %%d4;
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| 169 |
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rol.w #8, %%d5;
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| 170 |
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rol.w #8, %%d6;
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| 171 |
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rol.w #8, %%d7;
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| 172 |
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movem.w %%d4-%%d5, %2@;
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| 173 |
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movem.w %%d6-%%d7, %2@;
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| 174 |
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| 175 |
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movem.w %0@+, %%d4-%%d7;
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| 176 |
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rol.w #8, %%d4;
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| 177 |
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rol.w #8, %%d5;
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| 178 |
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rol.w #8, %%d6;
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| 179 |
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rol.w #8, %%d7;
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| 180 |
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movem.w %%d4-%%d5, %2@;
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| 181 |
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movem.w %%d6-%%d7, %2@;
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| 182 |
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| 183 |
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"
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| 184 |
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: "=a" (__p)
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| 185 |
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: "0" (__p) , "a" (addr)
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| 186 |
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: "d4", "d5", "d6", "d7");
|
| 187 |
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}
|
| 188 |
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while (__p + 8 < __e) {
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| 189 |
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asm volatile ("
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| 190 |
|
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movem.w %0@+, %%d4-%%d7;
|
| 191 |
|
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rol.w #8, %%d4;
|
| 192 |
|
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rol.w #8, %%d5;
|
| 193 |
|
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rol.w #8, %%d6;
|
| 194 |
|
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rol.w #8, %%d7;
|
| 195 |
|
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movem.w %%d4-%%d5, %2@;
|
| 196 |
|
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movem.w %%d6-%%d7, %2@;
|
| 197 |
|
|
|
| 198 |
|
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movem.w %0@+, %%d4-%%d7;
|
| 199 |
|
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rol.w #8, %%d4;
|
| 200 |
|
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rol.w #8, %%d5;
|
| 201 |
|
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rol.w #8, %%d6;
|
| 202 |
|
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rol.w #8, %%d7;
|
| 203 |
|
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movem.w %%d4-%%d5, %2@;
|
| 204 |
|
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movem.w %%d6-%%d7, %2@;
|
| 205 |
|
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"
|
| 206 |
|
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: "=a" (__p)
|
| 207 |
|
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: "0" (__p) , "a" (addr)
|
| 208 |
|
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: "d4", "d5", "d6", "d7");
|
| 209 |
|
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}
|
| 210 |
|
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while (__p < __e) {
|
| 211 |
|
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*(volatile unsigned short *)(addr) =
|
| 212 |
|
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(((*__p) & 0xff) << 8) | ((*__p) >> 8);
|
| 213 |
|
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__p++;
|
| 214 |
|
|
}
|
| 215 |
|
|
}
|
| 216 |
|
|
|
| 217 |
|
|
static inline void insw(void *addr,void *buf,int len)
|
| 218 |
|
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{
|
| 219 |
|
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unsigned short * __e = (unsigned short *)(buf) + (len);
|
| 220 |
|
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unsigned short * __p = (unsigned short *)(buf);
|
| 221 |
|
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unsigned short __v;
|
| 222 |
|
|
while (__p + 32 < __e) {
|
| 223 |
|
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asm volatile ("
|
| 224 |
|
|
movem.w %2@, %%d4-%%d5;
|
| 225 |
|
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movem.w %2@, %%d6-%%d7;
|
| 226 |
|
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rol.w #8, %%d4;
|
| 227 |
|
|
rol.w #8, %%d5;
|
| 228 |
|
|
rol.w #8, %%d6;
|
| 229 |
|
|
rol.w #8, %%d7;
|
| 230 |
|
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movem.w %%d4-%%d7, %0@;
|
| 231 |
|
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addq #8, %0;
|
| 232 |
|
|
|
| 233 |
|
|
movem.w %2@, %%d4-%%d5;
|
| 234 |
|
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movem.w %2@, %%d6-%%d7;
|
| 235 |
|
|
rol.w #8, %%d4;
|
| 236 |
|
|
rol.w #8, %%d5;
|
| 237 |
|
|
rol.w #8, %%d6;
|
| 238 |
|
|
rol.w #8, %%d7;
|
| 239 |
|
|
movem.w %%d4-%%d7, %0@;
|
| 240 |
|
|
addq #8, %0;
|
| 241 |
|
|
|
| 242 |
|
|
movem.w %2@, %%d4-%%d5;
|
| 243 |
|
|
movem.w %2@, %%d6-%%d7;
|
| 244 |
|
|
rol.w #8, %%d4;
|
| 245 |
|
|
rol.w #8, %%d5;
|
| 246 |
|
|
rol.w #8, %%d6;
|
| 247 |
|
|
rol.w #8, %%d7;
|
| 248 |
|
|
movem.w %%d4-%%d7, %0@;
|
| 249 |
|
|
addq #8, %0;
|
| 250 |
|
|
|
| 251 |
|
|
movem.w %2@, %%d4-%%d5;
|
| 252 |
|
|
movem.w %2@, %%d6-%%d7;
|
| 253 |
|
|
rol.w #8, %%d4;
|
| 254 |
|
|
rol.w #8, %%d5;
|
| 255 |
|
|
rol.w #8, %%d6;
|
| 256 |
|
|
rol.w #8, %%d7;
|
| 257 |
|
|
movem.w %%d4-%%d7, %0@;
|
| 258 |
|
|
addq #8, %0;
|
| 259 |
|
|
|
| 260 |
|
|
movem.w %2@, %%d4-%%d5;
|
| 261 |
|
|
movem.w %2@, %%d6-%%d7;
|
| 262 |
|
|
rol.w #8, %%d4;
|
| 263 |
|
|
rol.w #8, %%d5;
|
| 264 |
|
|
rol.w #8, %%d6;
|
| 265 |
|
|
rol.w #8, %%d7;
|
| 266 |
|
|
movem.w %%d4-%%d7, %0@;
|
| 267 |
|
|
addq #8, %0;
|
| 268 |
|
|
|
| 269 |
|
|
movem.w %2@, %%d4-%%d5;
|
| 270 |
|
|
movem.w %2@, %%d6-%%d7;
|
| 271 |
|
|
rol.w #8, %%d4;
|
| 272 |
|
|
rol.w #8, %%d5;
|
| 273 |
|
|
rol.w #8, %%d6;
|
| 274 |
|
|
rol.w #8, %%d7;
|
| 275 |
|
|
movem.w %%d4-%%d7, %0@;
|
| 276 |
|
|
addq #8, %0;
|
| 277 |
|
|
|
| 278 |
|
|
movem.w %2@, %%d4-%%d5;
|
| 279 |
|
|
movem.w %2@, %%d6-%%d7;
|
| 280 |
|
|
rol.w #8, %%d4;
|
| 281 |
|
|
rol.w #8, %%d5;
|
| 282 |
|
|
rol.w #8, %%d6;
|
| 283 |
|
|
rol.w #8, %%d7;
|
| 284 |
|
|
movem.w %%d4-%%d7, %0@;
|
| 285 |
|
|
addq #8, %0;
|
| 286 |
|
|
|
| 287 |
|
|
movem.w %2@, %%d4-%%d5;
|
| 288 |
|
|
movem.w %2@, %%d6-%%d7;
|
| 289 |
|
|
rol.w #8, %%d4;
|
| 290 |
|
|
rol.w #8, %%d5;
|
| 291 |
|
|
rol.w #8, %%d6;
|
| 292 |
|
|
rol.w #8, %%d7;
|
| 293 |
|
|
movem.w %%d4-%%d7, %0@;
|
| 294 |
|
|
addq #8, %0;
|
| 295 |
|
|
|
| 296 |
|
|
"
|
| 297 |
|
|
: "=a" (__p)
|
| 298 |
|
|
: "0" (__p) , "a" (addr)
|
| 299 |
|
|
: "d4", "d5", "d6", "d7");
|
| 300 |
|
|
}
|
| 301 |
|
|
while (__p + 8 < __e) {
|
| 302 |
|
|
asm volatile ("
|
| 303 |
|
|
movem.w %2@, %%d4-%%d5;
|
| 304 |
|
|
movem.w %2@, %%d6-%%d7;
|
| 305 |
|
|
rol.w #8, %%d4;
|
| 306 |
|
|
rol.w #8, %%d5;
|
| 307 |
|
|
rol.w #8, %%d6;
|
| 308 |
|
|
rol.w #8, %%d7;
|
| 309 |
|
|
movem.w %%d4-%%d7, %0@;
|
| 310 |
|
|
addq #8, %0;
|
| 311 |
|
|
|
| 312 |
|
|
movem.w %2@, %%d4-%%d5;
|
| 313 |
|
|
movem.w %2@, %%d6-%%d7;
|
| 314 |
|
|
rol.w #8, %%d4;
|
| 315 |
|
|
rol.w #8, %%d5;
|
| 316 |
|
|
rol.w #8, %%d6;
|
| 317 |
|
|
rol.w #8, %%d7;
|
| 318 |
|
|
movem.w %%d4-%%d7, %0@;
|
| 319 |
|
|
addq #8, %0;
|
| 320 |
|
|
"
|
| 321 |
|
|
: "=a" (__p)
|
| 322 |
|
|
: "0" (__p) , "a" (addr)
|
| 323 |
|
|
: "d4", "d5", "d6", "d7");
|
| 324 |
|
|
}
|
| 325 |
|
|
while (__p < __e) {
|
| 326 |
|
|
__v = *(volatile unsigned short *)(addr);
|
| 327 |
|
|
*(__p++) = ((__v & 0xff) << 8) | (__v >> 8);
|
| 328 |
|
|
}
|
| 329 |
|
|
}
|
| 330 |
|
|
|
| 331 |
|
|
#define inb_p(addr) get_user_byte_io((char *)(addr))
|
| 332 |
|
|
#define outb_p(x,addr) put_user_byte_io((x),(char *)(addr))
|
| 333 |
|
|
|
| 334 |
|
|
#endif /* CONFIG_COLDFIRE */
|
| 335 |
|
|
|
| 336 |
|
|
static inline unsigned char get_user_byte_io(const char * addr)
|
| 337 |
|
|
{
|
| 338 |
|
|
register unsigned char _v;
|
| 339 |
|
|
|
| 340 |
|
|
__asm__ __volatile__ ("moveb %1,%0":"=dm" (_v):"m" (*addr));
|
| 341 |
|
|
return _v;
|
| 342 |
|
|
}
|
| 343 |
|
|
|
| 344 |
|
|
static inline void put_user_byte_io(char val,char *addr)
|
| 345 |
|
|
{
|
| 346 |
|
|
__asm__ __volatile__ ("moveb %0,%1"
|
| 347 |
|
|
: /* no outputs */
|
| 348 |
|
|
:"idm" (val),"m" (*addr)
|
| 349 |
|
|
: "memory");
|
| 350 |
|
|
}
|
| 351 |
|
|
|
| 352 |
|
|
/*
|
| 353 |
|
|
* Change virtual addresses to physical addresses and vv.
|
| 354 |
|
|
* These are trivial on the 1:1 Linux/i386 mapping (but if we ever
|
| 355 |
|
|
* make the kernel segment mapped at 0, we need to do translation
|
| 356 |
|
|
* on the i386 as well)
|
| 357 |
|
|
*/
|
| 358 |
|
|
extern unsigned long mm_vtop(unsigned long addr);
|
| 359 |
|
|
extern unsigned long mm_ptov(unsigned long addr);
|
| 360 |
|
|
|
| 361 |
|
|
extern inline unsigned long virt_to_phys(volatile void * address)
|
| 362 |
|
|
{
|
| 363 |
|
|
return (unsigned long) mm_vtop((unsigned long)address);
|
| 364 |
|
|
}
|
| 365 |
|
|
|
| 366 |
|
|
extern inline void * phys_to_virt(unsigned long address)
|
| 367 |
|
|
{
|
| 368 |
|
|
return (void *) mm_ptov(address);
|
| 369 |
|
|
}
|
| 370 |
|
|
|
| 371 |
|
|
/*
|
| 372 |
|
|
* IO bus memory addresses are also 1:1 with the physical address
|
| 373 |
|
|
*/
|
| 374 |
|
|
#define virt_to_bus virt_to_phys
|
| 375 |
|
|
#define bus_to_virt phys_to_virt
|
| 376 |
|
|
|
| 377 |
|
|
|
| 378 |
|
|
#endif /* _M68K_IO_H */
|
