linux-toradex.git/arch/powerpc/kernel/dma-swiotlb.c, branch v3.3.4

powerpc: Use the newly added get_required_mask dma_map_ops hook

2011-09-19T23:19:35+00:00

Now that the generic code has dma_map_ops set, instead of having a
messy ifdef & if block in the base dma_get_required_mask hook push
the computation into the dma ops.

If the ops fails to set the get_required_mask hook default to the
width of dma_addr_t.

This also corrects ibmbus ibmebus_dma_supported to require a 64
bit mask.  I doubt anything is checking or setting the dma mask on
that bus.

Signed-off-by: Milton Miller 
Signed-off-by: Nishanth Aravamudan 
Cc: linuxppc-dev@lists.ozlabs.org
Cc: linux-kernel@vger.kernel.org
Cc: benh@kernel.crashing.org
Signed-off-by: Benjamin Herrenschmidt

of: Merge of_platform_bus_type with platform_bus_type

2010-07-24T15:57:51+00:00

of_platform_bus was being used in the same manner as the platform_bus.
The only difference being that of_platform_bus devices are generated
from data in the device tree, and platform_bus devices are usually
statically allocated in platform code.  Having them separate causes
the problem of device drivers having to be registered twice if it
was possible for the same device to appear on either bus.

This patch removes of_platform_bus_type and registers all of_platform
bus devices and drivers on the platform bus instead.  A previous patch
made the of_device structure an alias for the platform_device structure,
and a shim is used to adapt of_platform_drivers to the platform bus.

After all of of_platform_bus drivers are converted to be normal platform
drivers, the shim code can be removed.

Signed-off-by: Grant Likely 
Acked-by: David S. Miller

lmb: rename to memblock

2010-07-14T07:14:00+00:00

via following scripts

      FILES=$(find * -type f | grep -vE 'oprofile|[^K]config')

      sed -i \
        -e 's/lmb/memblock/g' \
        -e 's/LMB/MEMBLOCK/g' \
        $FILES

      for N in $(find . -name lmb.[ch]); do
        M=$(echo $N | sed 's/lmb/memblock/g')
        mv $N $M
      done

and remove some wrong change like lmbench and dlmb etc.

also move memblock.c from lib/ to mm/

Suggested-by: Ingo Molnar 
Acked-by: "H. Peter Anvin" 
Acked-by: Benjamin Herrenschmidt 
Acked-by: Linus Torvalds 
Signed-off-by: Yinghai Lu 
Signed-off-by: Benjamin Herrenschmidt

powerpc: remove unnecessary sync_single_range_* in swiotlb_dma_ops

2010-05-27T16:12:52+00:00

sync_single_range_for_cpu and sync_single_range_for_device hooks in
swiotlb_dma_ops are unnecessary because sync_single_for_cpu and
sync_single_for_device are used there.

Signed-off-by: FUJITA Tomonori 
Cc: Benjamin Herrenschmidt 
Cc: Paul Mackerras 
Cc: Becky Bruce 
Reviewed-by: Konrad Rzeszutek Wilk 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

powerpc/swiotlb: Fix off by one in determining boundary of which ops to use

2010-05-04T06:27:18+00:00

When we compare the devices DMA mask to the amount of memory we need to
make sure we treat the DMA mask as an address boundary.  For example if
the DMA_MASK(32) and we have 4G of memory we'd incorrectly set the dma
ops to swiotlb.  We need to add one to the dma mask when we convert it.

Signed-off-by: Kumar Gala

powerpc: Kill unused swiotlb variable

2009-11-24T06:00:24+00:00

We can kill unused swiotlb variable.

Signed-off-by: FUJITA Tomonori 
Signed-off-by: Benjamin Herrenschmidt

powerpc: Handle SWIOTLB mapping error properly

2009-08-28T04:24:11+00:00

Signed-off-by: FUJITA Tomonori 
Signed-off-by: Benjamin Herrenschmidt

powerpc: use dma_map_ops struct

2009-08-28T04:24:10+00:00

This converts uses dma_map_ops struct (in include/linux/dma-mapping.h)
instead of POWERPC homegrown dma_mapping_ops.

Signed-off-by: FUJITA Tomonori 
Acked-by: Becky Bruce 
Signed-off-by: Benjamin Herrenschmidt

powerpc: Remove swiotlb_pci_dma_ops

2009-08-28T04:24:09+00:00

Now swiotlb_pci_dma_ops is identical to swiotlb_dma_ops; we can use
swiotlb_dma_ops with any devices. This removes swiotlb_pci_dma_ops.

Signed-off-by: FUJITA Tomonori 
Acked-by: Becky Bruce 
Signed-off-by: Benjamin Herrenschmidt

powerpc: Remove addr_needs_map in struct dma_mapping_ops

2009-08-28T04:24:09+00:00

This patch adds max_direct_dma_addr to struct dev_archdata to remove
addr_needs_map in struct dma_mapping_ops. It also converts
dma_capable() to use max_direct_dma_addr.

max_direct_dma_addr is initialized in pci_dma_dev_setup_swiotlb(),
called via ppc_md.pci_dma_dev_setup hook.

For further information:
http://marc.info/?t=124719060200001&r=1&w=2

Signed-off-by: FUJITA Tomonori 
Acked-by: Becky Bruce 
Signed-off-by: Benjamin Herrenschmidt