}
EXPORT_SYMBOL(__phys_addr);
+static inline int phys_addr_valid(unsigned long addr)
+{
+ return addr < (1UL << boot_cpu_data.x86_phys_bits);
+}
+
+#else
+
+static inline int phys_addr_valid(unsigned long addr)
+{
+ return 1;
+}
+
#endif
int page_is_ram(unsigned long pagenr)
* have to convert them into an offset in a page-aligned mapping, but the
* caller shouldn't need to know that small detail.
*/
-static void __iomem *__ioremap(unsigned long phys_addr, unsigned long size,
+static void __iomem *__ioremap(resource_size_t phys_addr, unsigned long size,
enum ioremap_mode mode)
{
unsigned long pfn, offset, last_addr, vaddr;
if (!size || last_addr < phys_addr)
return NULL;
+ if (!phys_addr_valid(phys_addr)) {
+ printk(KERN_WARNING "ioremap: invalid physical address %lx\n",
+ phys_addr);
+ WARN_ON_ONCE(1);
+ return NULL;
+ }
+
/*
* Don't remap the low PCI/ISA area, it's always mapped..
*/
/*
* Don't allow anybody to remap normal RAM that we're using..
*/
- for (pfn = phys_addr >> PAGE_SHIFT; pfn < max_pfn_mapped &&
- (pfn << PAGE_SHIFT) < last_addr; pfn++) {
+ for (pfn = phys_addr >> PAGE_SHIFT;
+ (pfn << PAGE_SHIFT) < last_addr; pfn++) {
+
if (page_is_ram(pfn) && pfn_valid(pfn) &&
!PageReserved(pfn_to_page(pfn)))
return NULL;
switch (mode) {
case IOR_MODE_UNCACHED:
default:
- prot = PAGE_KERNEL_NOCACHE;
+ /*
+ * FIXME: we will use UC MINUS for now, as video fb drivers
+ * depend on it. Upcoming ioremap_wc() will fix this behavior.
+ */
+ prot = PAGE_KERNEL_UC_MINUS;
break;
case IOR_MODE_CACHED:
prot = PAGE_KERNEL;
*
* Must be freed with iounmap.
*/
-void __iomem *ioremap_nocache(unsigned long phys_addr, unsigned long size)
+void __iomem *ioremap_nocache(resource_size_t phys_addr, unsigned long size)
{
return __ioremap(phys_addr, size, IOR_MODE_UNCACHED);
}
EXPORT_SYMBOL(ioremap_nocache);
-void __iomem *ioremap_cache(unsigned long phys_addr, unsigned long size)
+void __iomem *ioremap_cache(resource_size_t phys_addr, unsigned long size)
{
return __ioremap(phys_addr, size, IOR_MODE_CACHED);
}
early_param("early_ioremap_debug", early_ioremap_debug_setup);
static __initdata int after_paging_init;
-static __initdata pte_t bm_pte[PAGE_SIZE/sizeof(pte_t)]
- __attribute__((aligned(PAGE_SIZE)));
+static pte_t bm_pte[PAGE_SIZE/sizeof(pte_t)]
+ __section(.bss.page_aligned);
static inline pmd_t * __init early_ioremap_pmd(unsigned long addr)
{