linux-toradex.git/arch/sparc/kernel/ioport.c, branch v3.0.98

sparc32,leon: Remove unnecessary page_address calls in LEON DMA API.

2011-05-16T20:41:40+00:00

The function mmu_inval_dma_area takes a virtual address as a parameter
which is problematic in case the buffer is located in highmem and the
mapping currently is unavailable.

Since the function was only implemented for LEON this patch removes
calls to it in non LEON code paths and renames it to dma_make_coherent
which instead takes a physical address (which for now is unused since we
flush the whole cache). This way it is possible to remove several unnecessary
calls to page_address which will fail if the virtual mapping is unavailable.

Signed-off-by: Kristoffer Glembo 
Acked-by: Sam Ravnborg 
Signed-off-by: David S. Miller

sparc: Fix sbus_alloc_coherent error handling.

2011-03-17T01:18:59+00:00

Order of kfree and free_pages were swapped in the error handling.

Signed-off-by: Kristoffer Glembo 
Acked-by: Sam Ravnborg 
Signed-off-by: David S. Miller

sparc: Make mmu_inval_dma_area take void * instead of unsigned long to minimize casts.

2011-03-17T01:18:59+00:00

Signed-off-by: Kristoffer Glembo 
Acked-by: Sam Ravnborg 
Signed-off-by: David S. Miller

sparc/leon: Make mmu_inval_dma_area flush dcache for LEONs without snooping enabled.

2011-03-17T01:18:58+00:00

Signed-off-by: Kristoffer Glembo 
Signed-off-by: David S. Miller

sparc/leon: Add LEON dma_ops.

2011-03-17T01:18:58+00:00

This patch sets the dma_ops structure for LEON. It reuses the pci32_dma_ops.

Signed-off-by: Kristoffer Glembo 
Acked-by: Sam Ravnborg 
Signed-off-by: David S. Miller

sparc: Add pci32_unmap_page.

2011-03-17T01:18:57+00:00

Signed-off-by: Kristoffer Glembo 
Acked-by: Sam Ravnborg 
Signed-off-by: David S. Miller

sparc: Replace open coded page alignment with PAGE_ALIGN macro.

2011-03-17T01:18:57+00:00

Signed-off-by: Kristoffer Glembo 
Acked-by: Sam Ravnborg 
Signed-off-by: David S. Miller

sparc: remove references to of_device and to_of_device

2010-07-24T15:58:22+00:00

of_device is just a #define alias to platform_device.  This patch
replaces all references to it with platform_device.

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

of: Always use 'struct device.of_node' to get device node pointer.

2010-05-18T22:10:44+00:00

The following structure elements duplicate the information in
'struct device.of_node' and so are being eliminated.  This patch
makes all readers of these elements use device.of_node instead.

(struct of_device *)->node
(struct dev_archdata *)->prom_node (sparc)
(struct dev_archdata *)->of_node (powerpc & microblaze)

Signed-off-by: Grant Likely

dma-mapping: sparc: unify 32bit and 64bit dma_set_mask

2010-03-12T23:52:42+00:00

This patchset transforms the PCI DMA API into the generic device model.
It's one of the reasons why we introduced the generic DMA API long ago;
driver writers are always able to use the generic DMA API with any bus
instead of using bus specific DMA APIs such as pci_map_single,
sbus_map_single, etc (only two bus specific APIs exist now; pci and ssb).

Some of the PCI DMA API are already implented on the top of the generic
DMA API (include/asm-generic/pci-dma-compat.h).  But there are some
exceptions.  This patchset finishes the transformation.

This patch:

sparc has two dma_set_mask implementations for 32bit and 64bit.  They are
same except for the error returned value.  We can safely unify them since
the error returned value doesn't matter as long as it is negative (as
DMA-API.txt describes).

This patch also changes dma_set_mask not to call
pci_set_dma_mask. Instead, dma_set_mask does the same thing that
pci_set_dma_mask does. This change enables ut to change
pci_set_dma_mask to call dma_set_mask; we can implement
pci_set_dma_mask as pci-dma-compat.h does.

Signed-off-by: FUJITA Tomonori 
Acked-by: David Miller 
Cc: Richard Henderson 
Cc: Ivan Kokshaysky 
Cc: Matt Turner 
Cc: James Bottomley 
Cc: Jesse Barnes 
Cc: Benjamin Herrenschmidt 
Cc: Russell King 
Cc: Greg KH 
Cc: Kay Sievers 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds