linux-toradex.git/include/linux/swiotlb.h, branch v3.6-rc1

swiotlb: Expose swiotlb_nr_tlb function to modules

2011-12-06T10:38:03+00:00

As a mechanism to detect whether SWIOTLB is enabled or not.
We also fix the spelling - it was swioltb instead of
swiotlb.

CC: FUJITA Tomonori 
[v1: Ripped out swiotlb_enabled]
Signed-off-by: Konrad Rzeszutek Wilk

swiotlb: Export swioltb_nr_tbl and utilize it as appropiate.

2011-06-06T19:41:16+00:00

By default the io_tlb_nslabs is set to zero, and gets set to
whatever value is passed in via swiotlb_init_with_tbl function.
The default value passed in is 64MB. However, if the user provides
the 'swiotlb=' the default value is ignored and
the value provided by the user is used... Except when the SWIOTLB
is used under Xen - there the default value of 64MB is used and
the Xen-SWIOTLB has no mechanism to get the 'io_tlb_nslabs' filled
out by setup_io_tlb_npages functions. This patch provides a function
for the Xen-SWIOTLB to call to see if the io_tlb_nslabs is set
and if so use that value.

Signed-off-by: FUJITA Tomonori 
Signed-off-by: Konrad Rzeszutek Wilk

swiotlb: Make swiotlb bookkeeping functions visible in the header file.

2010-06-07T15:59:27+00:00

We put the functions dealing with the operations on
the SWIOTLB buffer in the header and make those functions non-static.
And also make the functions exported via EXPORT_SYMBOL_GPL.

See "swiotlb: swiotlb: add swiotlb_tbl_map_single library function" for
full description of patchset.

[v2: swiotlb_sync_single_range_for_* no more. Remove usage.]

Signed-off-by: Konrad Rzeszutek Wilk 
Acked-by: FUJITA Tomonori 
Tested-by: Albert Herranz

swiotlb: search and replace "int dir" with "enum dma_data_direction dir"

2010-06-07T15:59:26+00:00

.. to catch anybody doing something funky.

See "swiotlb: swiotlb: add swiotlb_tbl_map_single library function" for
full description of patchset.

[v2: swiotlb_sync_single_range_* no more - removed usage]
[v3: enum dma_data_direction direction -> enum dma_data_direction dir]

Signed-off-by: Konrad Rzeszutek Wilk 
Acked-by: FUJITA Tomonori 
Tested-by: Albert Herranz

swiotlb: add the swiotlb initialization function with iotlb memory

2010-06-07T15:59:25+00:00

This enables the caller to initialize swiotlb with its own iotlb
memory.

See "swiotlb: swiotlb: add swiotlb_tbl_map_single library function" for
full description of patchset.

[v2: changed ..with_tlb to ..with_tbl]

Signed-off-by: FUJITA Tomonori 
Reviewed-by: Konrad Rzeszutek Wilk 
Tested-by: Albert Herranz

swiotlb: remove unnecessary swiotlb_sync_single_range_*

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

swiotlb_sync_single_range_for_cpu and swiotlb_sync_single_range_for_device
are unnecessary because swiotlb_sync_single_for_cpu and
swiotlb_sync_single_for_device can be used instead.

Signed-off-by: FUJITA Tomonori 
Reviewed-by: Konrad Rzeszutek Wilk 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

swiotlb: Remove duplicate swiotlb_force extern declarations

2009-11-15T08:03:10+00:00

Signed-off-by: FUJITA Tomonori 
Cc: tony.luck@intel.com
LKML-Reference: <1258199198-16657-4-git-send-email-fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Ingo Molnar

swiotlb: Defer swiotlb init printing, export swiotlb_print_info()

2009-11-10T11:32:00+00:00

This enables us to avoid printing swiotlb memory info when we
initialize swiotlb. After swiotlb initialization, we could find
that we don't need swiotlb.

This patch removes the code to print swiotlb memory info in
swiotlb_init() and exports the function to do that.

Signed-off-by: FUJITA Tomonori 
Cc: chrisw@sous-sol.org
Cc: dwmw2@infradead.org
Cc: joerg.roedel@amd.com
Cc: muli@il.ibm.com
Cc: tony.luck@intel.com
Cc: benh@kernel.crashing.org
LKML-Reference: <1257849980-22640-9-git-send-email-fujita.tomonori@lab.ntt.co.jp>
[ -v2: merge up conflict ]
Signed-off-by: Ingo Molnar

swiotlb: Add swiotlb_free() function

2009-11-10T11:31:52+00:00

swiotlb_free() function frees all allocated memory for swiotlb.

We need to initialize swiotlb before IOMMU initialization (x86
and powerpc needs to allocate memory from bootmem allocator). If
IOMMU initialization is successful, we need to free swiotlb
resource (don't want to waste 64MB).

Signed-off-by: FUJITA Tomonori 
Cc: chrisw@sous-sol.org
Cc: dwmw2@infradead.org
Cc: joerg.roedel@amd.com
Cc: muli@il.ibm.com
LKML-Reference: <1257849980-22640-8-git-send-email-fujita.tomonori@lab.ntt.co.jp>
[ -v2: build fix for the !CONFIG_SWIOTLB case ]
Signed-off-by: Ingo Molnar

swiotlb: use phys_to_dma and dma_to_phys

2009-07-28T05:19:20+00:00

This converts swiotlb to use phys_to_dma and dma_to_phys instead of
swiotlb_phys_to_bus() and swiotlb_bus_to_phys().

swiotlb_phys_to_bus() and swiotlb_bus_to_phys() are not necessary so
this patch also removes them.

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