/*
* Remap an arbitrary physical address space into the kernel virtual
* address space.
*
* NOTE! We need to allow non-page-aligned mappings too: we will obviously
* have to convert them into an offset in a page-aligned mapping, but the
* caller shouldn't need to know that small detail.
*/
void __iomem * __ioremap(unsigned long phys_addr, unsigned long size, unsigned long flags)
{
void __iomem *addr;
struct vm_struct *area;
unsigned long offset, last_addr;
pgprot_t pgprot;
#ifdef CONFIG_EISA
unsigned long end = phys_addr + size - 1;
/* Support EISA addresses */
if ((phys_addr >= 0x00080000 && end < 0x000fffff) ||
(phys_addr >= 0x00500000 && end < 0x03bfffff)) {
phys_addr |= F_EXTEND(0xfc000000);
flags |= _PAGE_NO_CACHE;
}
#endif
/* Don't allow wraparound or zero size */
last_addr = phys_addr + size - 1;
if (!size || last_addr < phys_addr)
return NULL;
/*
* Don't allow anybody to remap normal RAM that we're using..
*/
if (phys_addr < virt_to_phys(high_memory)) {
char *t_addr, *t_end;
struct page *page;
t_addr = __va(phys_addr);
t_end = t_addr + (size - 1);
for (page = virt_to_page(t_addr);
page <= virt_to_page(t_end); page++) {
if(!PageReserved(page))
return NULL;
}
}
pgprot = __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY |
_PAGE_ACCESSED | flags);
/*
* Mappings have to be page-aligned
*/
offset = phys_addr & ~PAGE_MASK;
phys_addr &= PAGE_MASK;
<<<<<<< HEAD
if (NULL == proc_mckinley_root)
{
proc_mckinley_root = proc_mkdir("bus/mckinley", NULL);
}
break;
default:
/* FIXME: this was added to prevent the compiler
* complaining about missing pcx, pcxs and pcxt
* I'm assuming they have neither gsc nor runway */
break;
}
}
static struct resource central_bus = {
.name = "Central Bus",
.start = F_EXTEND(0xfff80000),
.end = F_EXTEND(0xfffaffff),
.flags = IORESOURCE_MEM,
};
static struct resource local_broadcast = {
.name = "Local Broadcast",
.start = F_EXTEND(0xfffb0000),
.end = F_EXTEND(0xfffdffff),
.flags = IORESOURCE_MEM,
};
static struct resource global_broadcast = {
.name = "Global Broadcast",
.start = F_EXTEND(0xfffe0000),
.end = F_EXTEND(0xffffffff),