-#define IS_PAGE_ALIGNED(_val) ((_val) == ((_val) & PAGE_MASK))
-
-int __ioremap_explicit(phys_addr_t pa, unsigned long ea,
- unsigned long size, unsigned long flags)
-{
- struct vm_struct *area;
- void __iomem *ret;
-
- /* For now, require page-aligned values for pa, ea, and size */
- if (!IS_PAGE_ALIGNED(pa) || !IS_PAGE_ALIGNED(ea) ||
- !IS_PAGE_ALIGNED(size)) {
- printk(KERN_ERR "unaligned value in %s\n", __FUNCTION__);
- return 1;
- }
-
- if (!mem_init_done) {
- /* Two things to consider in this case:
- * 1) No records will be kept (imalloc, etc) that the region
- * has been remapped
- * 2) It won't be easy to iounmap() the region later (because
- * of 1)
- */
- ;
- } else {
- area = im_get_area(ea, size,
- IM_REGION_UNUSED|IM_REGION_SUBSET|IM_REGION_EXISTS);
- if (area == NULL) {
- /* Expected when PHB-dlpar is in play */
- return 1;
- }
- if (ea != (unsigned long) area->addr) {
- printk(KERN_ERR "unexpected addr return from "
- "im_get_area\n");
- return 1;
- }
- }
-
- ret = __ioremap_com(pa, pa, ea, size, flags);
- if (ret == NULL) {
- printk(KERN_ERR "ioremap_explicit() allocation failure !\n");
- return 1;
- }
- if (ret != (void *) ea) {
- printk(KERN_ERR "__ioremap_com() returned unexpected addr\n");
- return 1;
- }
-
- return 0;
-}
-