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https://github.com/edk2-porting/linux-next.git
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188 lines
4.5 KiB
C
188 lines
4.5 KiB
C
/****************************************************************************/
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/*
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* mcfsmc.h -- SMC ethernet support for ColdFire environments.
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*
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* (C) Copyright 1999-2002, Greg Ungerer (gerg@snapgear.com)
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* (C) Copyright 2000, Lineo Inc. (www.lineo.com)
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*/
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/****************************************************************************/
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#ifndef mcfsmc_h
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#define mcfsmc_h
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/****************************************************************************/
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/*
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* None of the current ColdFire targets that use the SMC91x111
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* allow 8 bit accesses. So this code is 16bit access only.
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*/
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#undef outb
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#undef inb
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#undef outw
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#undef outwd
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#undef inw
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#undef outl
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#undef inl
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#undef outsb
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#undef outsw
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#undef outsl
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#undef insb
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#undef insw
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#undef insl
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/*
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* Re-defines for ColdFire environment... The SMC part is
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* mapped into memory space, so remap the PC-style in/out
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* routines to handle that.
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*/
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#define outb smc_outb
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#define inb smc_inb
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#define outw smc_outw
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#define outwd smc_outwd
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#define inw smc_inw
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#define outl smc_outl
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#define inl smc_inl
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#define outsb smc_outsb
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#define outsw smc_outsw
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#define outsl smc_outsl
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#define insb smc_insb
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#define insw smc_insw
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#define insl smc_insl
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static inline int smc_inb(unsigned int addr)
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{
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register unsigned short w;
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w = *((volatile unsigned short *) (addr & ~0x1));
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return(((addr & 0x1) ? w : (w >> 8)) & 0xff);
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}
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static inline void smc_outw(unsigned int val, unsigned int addr)
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{
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*((volatile unsigned short *) addr) = (val << 8) | (val >> 8);
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}
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static inline int smc_inw(unsigned int addr)
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{
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register unsigned short w;
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w = *((volatile unsigned short *) addr);
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return(((w << 8) | (w >> 8)) & 0xffff);
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}
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static inline void smc_outl(unsigned long val, unsigned int addr)
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{
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*((volatile unsigned long *) addr) =
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((val << 8) & 0xff000000) | ((val >> 8) & 0x00ff0000) |
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((val << 8) & 0x0000ff00) | ((val >> 8) & 0x000000ff);
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}
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static inline void smc_outwd(unsigned int val, unsigned int addr)
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{
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*((volatile unsigned short *) addr) = val;
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}
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/*
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* The rep* functions are used to feed the data port with
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* raw data. So we do not byte swap them when copying.
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*/
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static inline void smc_insb(unsigned int addr, void *vbuf, int unsigned long len)
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{
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volatile unsigned short *rp;
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unsigned short *buf, *ebuf;
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buf = (unsigned short *) vbuf;
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rp = (volatile unsigned short *) addr;
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/* Copy as words for as long as possible */
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for (ebuf = buf + (len >> 1); (buf < ebuf); )
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*buf++ = *rp;
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/* Lastly, handle left over byte */
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if (len & 0x1)
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*((unsigned char *) buf) = (*rp >> 8) & 0xff;
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}
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static inline void smc_insw(unsigned int addr, void *vbuf, unsigned long len)
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{
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volatile unsigned short *rp;
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unsigned short *buf, *ebuf;
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buf = (unsigned short *) vbuf;
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rp = (volatile unsigned short *) addr;
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for (ebuf = buf + len; (buf < ebuf); )
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*buf++ = *rp;
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}
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static inline void smc_insl(unsigned int addr, void *vbuf, unsigned long len)
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{
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volatile unsigned long *rp;
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unsigned long *buf, *ebuf;
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buf = (unsigned long *) vbuf;
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rp = (volatile unsigned long *) addr;
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for (ebuf = buf + len; (buf < ebuf); )
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*buf++ = *rp;
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}
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static inline void smc_outsw(unsigned int addr, const void *vbuf, unsigned long len)
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{
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volatile unsigned short *rp;
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unsigned short *buf, *ebuf;
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buf = (unsigned short *) vbuf;
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rp = (volatile unsigned short *) addr;
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for (ebuf = buf + len; (buf < ebuf); )
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*rp = *buf++;
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}
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static inline void smc_outsl(unsigned int addr, void *vbuf, unsigned long len)
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{
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volatile unsigned long *rp;
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unsigned long *buf, *ebuf;
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buf = (unsigned long *) vbuf;
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rp = (volatile unsigned long *) addr;
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for (ebuf = buf + len; (buf < ebuf); )
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*rp = *buf++;
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}
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#ifdef CONFIG_NETtel
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/*
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* Re-map the address space of at least one of the SMC ethernet
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* parts. Both parts power up decoding the same address, so we
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* need to move one of them first, before doing enything else.
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*
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* We also increase the number of wait states for this part by one.
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*/
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void smc_remap(unsigned int ioaddr)
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{
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static int once = 0;
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extern unsigned short ppdata;
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if (once++ == 0) {
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*((volatile unsigned short *)(MCF_MBAR+MCFSIM_PADDR)) = 0x00ec;
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ppdata |= 0x0080;
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*((volatile unsigned short *)(MCF_MBAR+MCFSIM_PADAT)) = ppdata;
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outw(0x0001, ioaddr + BANK_SELECT);
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outw(0x0001, ioaddr + BANK_SELECT);
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outw(0x0067, ioaddr + BASE);
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ppdata &= ~0x0080;
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*((volatile unsigned short *)(MCF_MBAR+MCFSIM_PADAT)) = ppdata;
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}
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*((volatile unsigned short *)(MCF_MBAR+MCFSIM_CSCR3)) = 0x1180;
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}
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#endif
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/****************************************************************************/
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#endif /* mcfsmc_h */
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