Hello,
The following patchset is our enhancement for the upstream DMA mapping
API(v9), where new IOVA API is introduced with the version of IOVA
address specified. The current upstream DMA mapping API cannot specify
any specific IOVA address at allocation. We need to specify IOVA
address. This is
Export __{alloc,free}_iova() as arm_iommu_{alloc,free}_iova().
There are some cases that IOVA allocation and mapping have to be done
seperately, especially for perf optimization reasons. This patch
allows client modules to {alloc,free} IOVA space by themselves without
backing up actual pages for
Enable IOVA (un)mapping at a specific IOVA address, independent of
allocating/freeing IOVA area, introducing the following
dma_(un)map_page_*at*() functions:
dma_map_page_at()
dma_unmap_page_at()
The above create a mapping between pre-allocated iova and a page, and
remov just a
For the compiler warning, uninitialized var when getting value by a
pointer.
Signed-off-by: Hiroshi DOYU hd...@nvidia.com
---
Depends:
[v2 1/2] iommu/tegra: smmu: Simplify allocation at once
http://marc.info/?l=linux-tegram=133706973614667w=2
---
drivers/iommu/tegra-smmu.c |4
On 05/18/2012 12:43 AM, Hiroshi DOYU wrote:
This code was based on:
arch/microblaze/kernel/prom_parse.c
arch/powerpc/kernel/prom_parse.c
Can be promoted as a global function for general use.
Signed-off-by: Hiroshi DOYU hd...@nvidia.com
Hiroshi,
Once this is accepted, it might be
Hi Stephen, Joerg,
Stephen Warren swar...@wwwdotorg.org wrote @ Fri, 18 May 2012 17:15:34 +0200:
On 05/18/2012 12:43 AM, Hiroshi DOYU wrote:
This code was based on:
arch/microblaze/kernel/prom_parse.c
arch/powerpc/kernel/prom_parse.c
Can be promoted as a global function for
On 05/18/2012 06:02 PM, Alex Williamson wrote:
On Wed, 2012-05-16 at 09:29 -0400, Don Dutile wrote:
On 05/15/2012 05:09 PM, Alex Williamson wrote:
On Tue, 2012-05-15 at 13:56 -0600, Bjorn Helgaas wrote:
On Mon, May 14, 2012 at 4:49 PM, Alex Williamson
alex.william...@redhat.com wrote:
On
This adds a request_mem_region() for the DRHD registers. The AMD
code has similar code in iommu_map_mmio_space().
This helps avoid address conflicts when assigning PCI BARs.
---
Bjorn Helgaas (2):
resources: set type of new resource returned by __request_region()
iommu: Request
Request the IOMMU CSR MMIO region to keep anybody else from claiming it
while we're using it.
The bug referenced below is a crash that happened when we assigned an
address in the IOMMU CSR area to a PCI BAR. This patch just changes
the IOMMU driver, which only helps when the driver is present,
On Fri, 2012-05-18 at 19:00 -0400, Don Dutile wrote:
On 05/18/2012 06:02 PM, Alex Williamson wrote:
On Wed, 2012-05-16 at 09:29 -0400, Don Dutile wrote:
On 05/15/2012 05:09 PM, Alex Williamson wrote:
On Tue, 2012-05-15 at 13:56 -0600, Bjorn Helgaas wrote:
On Mon, May 14, 2012 at 4:49 PM,
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