include/asm/io.h

1 /* SPDX-License-Identifier: GPL-2.0 */
9  * versions of the single-IO instructions (inb_p/inw_p/..).
19  * Thanks to James van Artsdalen for a better timing-fix than
23  * On the other hand, I'd like to be sure of a non-existent port:
24  * I feel a bit unsafe about using 0x80 (should be safe, though)
35   *  - Arnaldo Carvalho de Melo <acme@conectiva.com.br>
117  *	virt_to_phys	-	map virtual addresses to physical
124  *	This function does not give bus mappings for DMA transfers. In
136  *	phys_to_virt	-	map physical address to virtual
143  *	This function does not handle bus mappings for DMA transfers. In
180  * The default ioremap() behavior is non-cached; if you need something
193  * ioremap     -   map bus memory into CPU space
195  * @size:      size of the resource to map
203  * If the area you are trying to map is a PCI BAR you should have a
224 #include <asm-generic/iomap.h>
229  * to PAGE_OFFSET is pure coincidence - it does not mean ISA values
231  * used as the IO-area pointer (it can be iounmapped as well, so the
309 			count--;					\
325 			count--;					\
375 #include <asm-generic/io.h>
403  * iosubmit_cmds512 - copy data to single MMIO location, in 512-bit units
404  * @dst: destination, in MMIO space (must be 512-bit aligned)