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/* $Id: PeeCeeI.c,v 1.4 1999/09/06 01:17:35 davem Exp $
* PeeCeeI.c: The emerging standard...
*
* Copyright (C) 1997 David S. Miller (davem@caip.rutgers.edu)
*/
#include <linux/config.h>
#ifdef CONFIG_PCI
#include <asm/io.h>
#include <asm/byteorder.h>
void outsb(unsigned long addr, const void *src, unsigned long count)
{
const u8 *p = src;
while(count--)
outb(*p++, addr);
}
void outsw(unsigned long addr, const void *src, unsigned long count)
{
if(count) {
u16 *ps = (u16 *)src;
u32 *pi;
if(((u64)src) & 0x2) {
u16 val = le16_to_cpup(ps);
outw(val, addr);
ps++;
count--;
}
pi = (u32 *)ps;
while(count >= 2) {
u32 w = le32_to_cpup(pi);
pi++;
outw(w >> 0, addr);
outw(w >> 16, addr);
count -= 2;
}
ps = (u16 *)pi;
if(count) {
u16 val = le16_to_cpup(ps);
outw(val, addr);
}
}
}
void outsl(unsigned long addr, const void *src, unsigned long count)
{
if(count) {
if((((u64)src) & 0x3) == 0) {
u32 *p = (u32 *)src;
while(count--) {
u32 val = cpu_to_le32p(p);
outl(val, addr);
p++;
}
} else {
u8 *pb;
u16 *ps = (u16 *)src;
u32 l = 0, l2;
u32 *pi;
switch(((u64)src) & 0x3) {
case 0x2:
count -= 1;
l = cpu_to_le16p(ps) << 16;
ps++;
pi = (u32 *)ps;
while(count--) {
l2 = cpu_to_le32p(pi);
pi++;
outl(((l >> 16) | (l2 << 16)), addr);
l = l2;
}
ps = (u16 *)pi;
l2 = cpu_to_le16p(ps);
outl(((l >> 16) | (l2 << 16)), addr);
break;
case 0x1:
count -= 1;
pb = (u8 *)src;
l = (*pb++ << 8);
ps = (u16 *)pb;
l2 = cpu_to_le16p(ps);
ps++;
l |= (l2 << 16);
pi = (u32 *)ps;
while(count--) {
l2 = cpu_to_le32p(pi);
pi++;
outl(((l >> 8) | (l2 << 24)), addr);
l = l2;
}
pb = (u8 *)pi;
outl(((l >> 8) | (*pb << 24)), addr);
break;
case 0x3:
count -= 1;
pb = (u8 *)src;
l = (*pb++ << 24);
pi = (u32 *)pb;
while(count--) {
l2 = cpu_to_le32p(pi);
pi++;
outl(((l >> 24) | (l2 << 8)), addr);
l = l2;
}
ps = (u16 *)pi;
l2 = cpu_to_le16p(ps);
ps++;
pb = (u8 *)ps;
l2 |= (*pb << 16);
outl(((l >> 24) | (l2 << 8)), addr);
break;
}
}
}
}
void insb(unsigned long addr, void *dst, unsigned long count)
{
if(count) {
u32 *pi;
u8 *pb = dst;
while((((unsigned long)pb) & 0x3) && count--)
*pb++ = inb(addr);
pi = (u32 *)pb;
while(count >= 4) {
u32 w;
w = (inb(addr) << 24);
w |= (inb(addr) << 16);
w |= (inb(addr) << 8);
w |= (inb(addr) << 0);
*pi++ = w;
count -= 4;
}
pb = (u8 *)pi;
while(count--)
*pb++ = inb(addr);
}
}
void insw(unsigned long addr, void *dst, unsigned long count)
{
if(count) {
u16 *ps = dst;
u32 *pi;
if(((unsigned long)ps) & 0x2) {
*ps++ = le16_to_cpu(inw(addr));
count--;
}
pi = (u32 *)ps;
while(count >= 2) {
u32 w;
w = (le16_to_cpu(inw(addr)) << 16);
w |= (le16_to_cpu(inw(addr)) << 0);
*pi++ = w;
count -= 2;
}
ps = (u16 *)pi;
if(count)
*ps = le16_to_cpu(inw(addr));
}
}
void insl(unsigned long addr, void *dst, unsigned long count)
{
if(count) {
if((((unsigned long)dst) & 0x3) == 0) {
u32 *pi = dst;
while(count--)
*pi++ = le32_to_cpu(inl(addr));
} else {
u32 l = 0, l2, *pi;
u16 *ps;
u8 *pb;
switch(((unsigned long)dst) & 3) {
case 0x2:
ps = dst;
count -= 1;
l = le32_to_cpu(inl(addr));
*ps++ = l;
pi = (u32 *)ps;
while(count--) {
l2 = le32_to_cpu(inl(addr));
*pi++ = (l << 16) | (l2 >> 16);
l = l2;
}
ps = (u16 *)pi;
*ps = l;
break;
case 0x1:
pb = dst;
count -= 1;
l = le32_to_cpu(inl(addr));
*pb++ = l >> 24;
ps = (u16 *)pb;
*ps++ = ((l >> 8) & 0xffff);
pi = (u32 *)ps;
while(count--) {
l2 = le32_to_cpu(inl(addr));
*pi++ = (l << 24) | (l2 >> 8);
l = l2;
}
pb = (u8 *)pi;
*pb = l;
break;
case 0x3:
pb = (u8 *)dst;
count -= 1;
l = le32_to_cpu(inl(addr));
*pb++ = l >> 24;
pi = (u32 *)pb;
while(count--) {
l2 = le32_to_cpu(inl(addr));
*pi++ = (l << 8) | (l2 >> 24);
l = l2;
}
ps = (u16 *)pi;
*ps++ = ((l >> 8) & 0xffff);
pb = (u8 *)ps;
*pb = l;
break;
}
}
}
}
#endif /* CONFIG_PCI */
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