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4d852ef8c2
linux/arch/arm
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Andreas Herrmann 4d852ef8c2 arm: dma-mapping: Add support to extend DMA IOMMU mappings 
Instead of using just one bitmap to keep track of IO virtual addresses
(handed out for IOMMU use) introduce an array of bitmaps. This allows
us to extend existing mappings when running out of iova space in the
initial mapping etc.

If there is not enough space in the mapping to service an IO virtual
address allocation request, __alloc_iova() tries to extend the mapping
-- by allocating another bitmap -- and makes another allocation
attempt using the freshly allocated bitmap.

This allows arm iommu drivers to start with a decent initial size when
an dma_iommu_mapping is created and still to avoid running out of IO
virtual addresses for the mapping.

Signed-off-by: Andreas Herrmann <andreas.herrmann@calxeda.com>
[mszyprow: removed extensions parameter to arm_iommu_create_mapping()
 function, which will be modified in the next patch anyway, also some
 debug messages about extending bitmap]
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
2014-02-28 11:55:18 +01:00
..
boot ARM: SoC fixes for 3.14-rc 2014-02-23 17:38:04 -08:00
common ARM: SoC platform changes for 3.14 2014-01-23 18:40:49 -08:00
configs ARM: multi_v7_defconfig: Select CONFIG_SOC_DRA7XX 2014-02-10 10:38:06 -08:00
crypto CRYPTO: Fix more AES build errors 2014-01-05 13:59:56 +00:00
firmware
include arm: dma-mapping: Add support to extend DMA IOMMU mappings 2014-02-28 11:55:18 +01:00
kernel ARM: 7952/1: mm: Fix the memblock allocation for LPAE machines 2014-02-10 11:44:12 +00:00
kvm First round of KVM updates for 3.14; PPC parts will come next week. 2014-01-22 21:40:43 -08:00
lib ARM: 7877/1: use built-in byte swap function 2013-12-29 12:32:45 +00:00
mach-at91 ARM: SoC platform changes for 3.14 2014-01-23 18:40:49 -08:00
mach-bcm ARM: pinctrl: Add Broadcom Capri pinctrl driver 2014-01-16 14:25:38 +01:00
mach-bcm2835 ARM: bcm2835: Fix grammar in help message 2014-01-02 12:07:52 -08:00
mach-berlin
mach-clps711x ARM: SoC platform changes for 3.14 2014-01-23 18:40:49 -08:00
mach-cns3xxx
mach-davinci ARM: driver updates for 3.14 2014-01-23 18:49:36 -08:00
mach-dove
mach-ebsa110
mach-efm32
mach-ep93xx
mach-exynos ACPI and power management updates for 3.14-rc1 2014-01-24 15:51:02 -08:00
mach-footbridge Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input 2014-01-24 17:17:30 -08:00
mach-gemini
mach-highbank Merge branches 'amba', 'fixes', 'kees', 'misc' and 'unstable/sa11x0' into for-next 2014-01-21 21:26:33 +00:00
mach-hisi ARM: hisi: fix kconfig warning on HAVE_ARM_TWD 2014-02-02 19:52:42 -08:00
mach-imx ARM: imx6: build pm-imx6q.c independently of CONFIG_PM 2014-02-18 16:03:43 -08:00
mach-integrator ARM: integrator: restore static map on the CP 2014-01-31 14:58:52 -08:00
mach-iop13xx
mach-iop32x ARM: iop32x: fix power off handling for the EM7210 board 2014-01-31 14:58:53 -08:00
mach-iop33x
mach-ixp4xx ARM: SoC platform changes for 3.14 2014-01-23 18:40:49 -08:00
mach-keystone ARM: keystone: config: fix build warning when CONFIG_DMADEVICES is not set 2014-01-31 15:03:53 -08:00
mach-kirkwood mvebu fixes for v3.13 (incremental #2) 2014-01-31 14:59:28 -08:00
mach-ks8695
mach-lpc32xx
mach-mmp ARM: SoC platform changes for 3.14 2014-01-23 18:40:49 -08:00
mach-moxart ARM: moxart: move DMA_OF selection to driver 2014-02-02 19:52:45 -08:00
mach-msm ARM: driver updates for 3.14 2014-01-23 18:49:36 -08:00
mach-mv78xx0
mach-mvebu mvebu fixes for v3.13 (incremental #2) 2014-01-31 14:59:28 -08:00
mach-mxs
mach-netx
mach-nomadik
mach-nspire
mach-omap1 ARM: OMAP1: nokia770: enable tahvo-usb 2014-02-13 15:20:14 -08:00
mach-omap2 Fixes for omaps, mostly to deal with the 34xx vs 36xx SoC 2014-02-18 15:57:59 -08:00
mach-orion5x
mach-picoxcell
mach-prima2
mach-pxa Merge tag 'pwm_pxa_for_v3.14' of https://git.kernel.org/pub/scm/linux/kernel/git/hzhuang1/linux into fixes 2014-02-18 15:32:21 -08:00
mach-realview
mach-rockchip
mach-rpc
mach-s3c24xx ARM: SoC cleanups for 3.14 2014-01-23 18:36:55 -08:00
mach-s3c64xx ARM: SoC cleanups for 3.14 2014-01-23 18:36:55 -08:00
mach-s5p64x0
mach-s5pc100
mach-s5pv210
mach-sa1100 ACPI and power management updates for 3.14-rc1 2014-01-24 15:51:02 -08:00
mach-shmobile ARM: fix HAVE_ARM_TWD selection for OMAP and shmobile 2014-02-02 19:52:53 -08:00
mach-socfpga
mach-spear
mach-sti
mach-sunxi ARM: SoC platform changes for 3.14 2014-01-23 18:40:49 -08:00
mach-tegra ARM: SoC fixes for 3.14-rc 2014-02-23 17:38:04 -08:00
mach-u300 ARM: SoC platform changes for 3.14 2014-01-23 18:40:49 -08:00
mach-ux500 ARM: SoC DT updates for 3.14 2014-01-23 18:45:38 -08:00
mach-versatile
mach-vexpress
mach-virt
mach-vt8500
mach-w90x900
mach-zynq ARM: zynq: Reserve not DMAable space in front of the kernel 2014-02-10 10:45:42 -08:00
mm arm: dma-mapping: Add support to extend DMA IOMMU mappings 2014-02-28 11:55:18 +01:00
net bpf: do not use reciprocal divide 2014-01-15 17:02:08 -08:00
nwfpe
oprofile
plat-iop
plat-omap
plat-orion mvebu fixes for v3.13 (incremental #2) 2014-01-31 14:59:28 -08:00
plat-pxa
plat-samsung MTD updates for 3.14: 2014-01-28 18:56:37 -08:00
plat-versatile ARM: SoC platform changes for 3.14 2014-01-23 18:40:49 -08:00
tools
vfp
xen xen/gnttab: Use phys_addr_t to describe the grant frame base address 2014-01-30 12:56:34 +00:00
Kconfig Bug-fixes: 2014-01-31 08:38:18 -08:00
Kconfig-nommu
Kconfig.debug ARM: SoC platform changes for 3.14 2014-01-23 18:40:49 -08:00
Makefile Merge branches 'fixes' and 'misc' into for-linus 2014-01-28 21:38:48 +00:00