linux/arch/arm/include/asm/mach
Hiroshi DOYU 69d3a84a64 omap iommu: simple virtual address space management
This patch provides a device drivers, which has a omap iommu, with
address mapping APIs between device virtual address(iommu), physical
address and MPU virtual address.

There are 4 possible patterns for iommu virtual address(iova/da) mapping.

    |iova/			  mapping		iommu_		page
    | da	pa	va	(d)-(p)-(v)		function	type
  ---------------------------------------------------------------------------
  1 | c		c	c	 1 - 1 - 1	  _kmap() / _kunmap()	s
  2 | c		c,a	c	 1 - 1 - 1	_kmalloc()/ _kfree()	s
  3 | c		d	c	 1 - n - 1	  _vmap() / _vunmap()	s
  4 | c		d,a	c	 1 - n - 1	_vmalloc()/ _vfree()	n*

    'iova':	device iommu virtual address
    'da':	alias of 'iova'
    'pa':	physical address
    'va':	mpu virtual address

    'c':	contiguous memory area
    'd':	dicontiguous memory area
    'a':	anonymous memory allocation
    '()':	optional feature

    'n':	a normal page(4KB) size is used.
    's':	multiple iommu superpage(16MB, 1MB, 64KB, 4KB) size is used.

    '*':	not yet, but feasible.

Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
2009-05-19 08:23:49 +03:00
..
arch.h
dma.h [ARM] dma: move IOMD and floppy DMA structures to RiscPC DMA code 2009-02-21 21:36:22 +00:00
flash.h
irda.h
irq.h
map.h omap iommu: simple virtual address space management 2009-05-19 08:23:49 +03:00
mmc.h
pci.h PCI: arm: use generic INTx swizzle from PCI core 2009-01-07 11:13:13 -08:00
serial_at91.h
serial_sa1100.h
sharpsl_param.h
time.h
udc_pxa2xx.h [ARM] pxa: remove references to pxa_gpio_mode() in comments 2008-09-25 13:35:27 +01:00