void __iounmap(void __iomem *addr)
{
unsigned long vaddr = (unsigned long __force)addr;
unsigned long seg = PXSEG(vaddr);
struct vm_struct *p;
if (seg < P3SEG || seg >= P3_ADDR_MAX || is_pci_memaddr(vaddr))
return;
#ifdef CONFIG_32BIT
/*
* Purge any PMB entries that may have been established for this
* mapping, then proceed with conventional VMA teardown.
*
* XXX: Note that due to the way that remove_vm_area() does
* matching of the resultant VMA, we aren't able to fast-forward
* the address past the PMB space until the end of the VMA where
* the page tables reside. As such, unmap_vm_area() will be
* forced to linearly scan over the area until it finds the page
* tables where PTEs that need to be unmapped actually reside,
* which is far from optimal. Perhaps we need to use a separate
* VMA for the PMB mappings?
* -- PFM.
*/
pmb_unmap(vaddr);
#endif
p = remove_vm_area((void *)(vaddr & PAGE_MASK));
if (!p) {
printk(KERN_ERR "%s: bad address %p\n", __func__, addr);
return;
}
kfree(p);
}
void __iounmap(void __iomem *addr)
{
unsigned long vaddr = (unsigned long __force)addr;
struct vm_struct *p;
/*
* Nothing to do if there is no translatable mapping.
*/
if (iomapping_nontranslatable(vaddr))
return;
/*
* There's no VMA if it's from an early fixed mapping.
*/
if (iounmap_fixed(addr) == 0)
return;
/*
* If the PMB handled it, there's nothing else to do.
*/
if (pmb_unmap(addr) == 0)
return;
p = remove_vm_area((void *)(vaddr & PAGE_MASK));
if (!p) {
printk(KERN_ERR "%s: bad address %p\n", __func__, addr);
return;
}
kfree(p);
}
void __iounmap(void __iomem *addr)
{
unsigned long vaddr = (unsigned long __force)addr;
struct vm_struct *p;
if (iomapping_nontranslatable(vaddr))
return;
if (iounmap_fixed(addr) == 0)
return;
if (pmb_unmap(addr) == 0)
return;
p = remove_vm_area((void *)(vaddr & PAGE_MASK));
if (!p) {
printk(KERN_ERR "%s: bad address %p\n", __func__, addr);
return;
}
kfree(p);
}
