linux-toradex.git/arch/sparc/kernel/ioport.c, branch v3.4.72

SPARC: adapt for dma_map_ops changes

2012-03-28T14:36:34+00:00

Adapt core SPARC architecture code for dma_map_ops changes: replace
alloc/free_coherent with generic alloc/free methods.

Signed-off-by: Andrzej Pietrasiewicz 
Acked-by: Kyungmin Park 
Signed-off-by: Marek Szyprowski 
Reviewed-by: Arnd Bergmann 
Acked-by: David S. Miller

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k

2011-08-01T00:30:59+00:00

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/linux-m68k:
  m68k/math-emu: Remove unnecessary code
  m68k/math-emu: Remove commented out old code
  m68k: Kill warning in setup_arch() when compiling for Sun3
  m68k/atari: Prefix GPIO_{IN,OUT} with CODEC_
  sparc: iounmap() and *_free_coherent() - Use lookup_resource()
  m68k/atari: Reserve some ST-RAM early on for device buffer use
  m68k/amiga: Chip RAM - Use lookup_resource()
  resources: Add lookup_resource()
  sparc: _sparc_find_resource() should check for exact matches
  m68k/amiga: Chip RAM - Offset resource end by CHIP_PHYSADDR
  m68k/amiga: Chip RAM - Use resource_size() to fix off-by-one error
  m68k/amiga: Chip RAM - Change chipavail to an atomic_t
  m68k/amiga: Chip RAM - Always allocate from the start of memory
  m68k/amiga: Chip RAM - Convert from printk() to pr_*()
  m68k/amiga: Chip RAM - Use tabs for indentation

sparc: iounmap() and *_free_coherent() - Use lookup_resource()

2011-07-30T19:21:39+00:00

Replace a custom implementation (which doesn't lock the resource tree) by a
call to lookup_resource()

Signed-off-by: Geert Uytterhoeven 
Acked-by: David S. Miller

sparc: _sparc_find_resource() should check for exact matches

2011-07-30T19:21:38+00:00

The address that's passed to _sparc_find_resource() should always be the
start address of a resource:
  - iounmap() passes a page-aligned virtual address, while the original
    address was created by adding the in-page offset to the resource's
    start address,
  - sbus_free_coherent() and pci32_free_coherent() should be passed an
    address obtained from sbus_alloc_coherent() resp. pci32_alloc_coherent(),
    which is always a resource's start address.

Hence replace the range check by a check for an exact match.

Signed-off-by: Geert Uytterhoeven 
Acked-by: David S. Miller

treewide: Convert uses of struct resource to resource_size(ptr)

2011-06-10T12:55:36+00:00

Several fixes as well where the +1 was missing.

Done via coccinelle scripts like:

@@
struct resource *ptr;
@@

- ptr->end - ptr->start + 1
+ resource_size(ptr)

and some grep and typing.

Mostly uncompiled, no cross-compilers.

Signed-off-by: Joe Perches 
Signed-off-by: Jiri Kosina

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