5  * (C) Copyright 2005 - 2010  Paul Mundt
7  * Re-map IO memory to kernel address space so that we can access it.
8  * This is needed for high PCI addresses that aren't mapped in the
9  * 640k-1MB IO memory area on PC's
31  * On 32-bit SH, we traditionally have the whole physical address space mapped
42 	phys_addr_t last_addr = offset + size - 1;  in __ioremap_29bit()
46 	 * mapped. Uncached access for P1 addresses are done through P2.  in __ioremap_29bit()
47 	 * In the P3 case or for addresses outside of the 29-bit space,  in __ioremap_29bit()
65 	/* P4 above the store queues are always mapped. */  in __ioremap_29bit()
80  * NOTE! We need to allow non-page-aligned mappings too: we will obviously
81  * have to convert them into an offset in a page-aligned mapping, but the
90 	void __iomem *mapped;  in __ioremap_caller()  local
92 	mapped = __ioremap_trapped(phys_addr, size);  in __ioremap_caller()
93 	if (mapped)  in __ioremap_caller()
94 		return mapped;  in __ioremap_caller()
96 	mapped = __ioremap_29bit(phys_addr, size, pgprot);  in __ioremap_caller()
97 	if (mapped)  in __ioremap_caller()
98 		return mapped;  in __ioremap_caller()
101 	last_addr = phys_addr + size - 1;  in __ioremap_caller()
113 	 * PMB entries are all pre-faulted.  in __ioremap_caller()
115 	mapped = pmb_remap_caller(phys_addr, size, pgprot, caller);  in __ioremap_caller()
116 	if (mapped && !IS_ERR(mapped))  in __ioremap_caller()
117 		return mapped;  in __ioremap_caller()
120 	 * Mappings have to be page-aligned  in __ioremap_caller()
124 	size = PAGE_ALIGN(last_addr+1) - phys_addr;  in __ioremap_caller()
132 	area->phys_addr = phys_addr;  in __ioremap_caller()
133 	orig_addr = addr = (unsigned long)area->addr;  in __ioremap_caller()
145  * Simple checks for non-translatable mappings.
151 	 * In 29-bit mode this includes the fixed P1/P2 areas, as well as  in iomapping_nontranslatable()