sh/mm/ioremap.c

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()
78 	void __iomem *mapped;  in ioremap_prot()  local
81 	mapped = __ioremap_trapped(phys_addr, size);  in ioremap_prot()
82 	if (mapped)  in ioremap_prot()
83 		return mapped;  in ioremap_prot()
85 	mapped = __ioremap_29bit(phys_addr, size, pgprot);  in ioremap_prot()
86 	if (mapped)  in ioremap_prot()
87 		return mapped;  in ioremap_prot()
97 	 * PMB entries are all pre-faulted.  in ioremap_prot()
99 	mapped = pmb_remap_caller(phys_addr, size, pgprot,  in ioremap_prot()
101 	if (mapped && !IS_ERR(mapped))  in ioremap_prot()
102 		return mapped;  in ioremap_prot()
109  * Simple checks for non-translatable mappings.
115 	 * In 29-bit mode this includes the fixed P1/P2 areas, as well as  in iomapping_nontranslatable()