talos-op-linux/lib/swiotlb.c, branch v3.4

Merge tag 'module-for-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux

2012-03-24T17:24:31+00:00

Pull cleanup of fs/ and lib/ users of module.h from Paul Gortmaker: "Fix up files in fs/ and lib/ dirs to only use module.h if they really need it. These are trivial in scope vs the work done previously. We now have things where any few remaining cleanups can be farmed out to arch or subsystem maintainers, and I have done so when possible. What is remaining here represents the bits that don't clearly lie within a single arch/subsystem boundary, like the fs dir and the lib dir. Some duplicate includes arising from overlapping fixes from independent subsystem maintainer submissions are also quashed." Fix up trivial conflicts due to clashes with other include file cleanups (including some due to the previous bug.h cleanup pull). * tag 'module-for-3.4' of git://git.kernel.org/pub/scm/linux/kernel/git/paulg/linux: lib: reduce the use of module.h wherever possible fs: reduce the use of module.h wherever possible includecheck: delete any duplicate instances of module.h

lib: remove the second argument of k[un]map_atomic()

2012-03-20T13:48:27+00:00

Signed-off-by: Cong Wang

lib: reduce the use of module.h wherever possible

2012-03-07T20:04:04+00:00

For files only using THIS_MODULE and/or EXPORT_SYMBOL, map them onto including export.h -- or if the file isn't even using those, then just delete the include. Fix up any implicit include dependencies that were being masked by module.h along the way. Signed-off-by: Paul Gortmaker

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: fix wrong panic

2011-02-25T23:07:36+00:00

swiotlb's map_page wrongly calls panic() when it can't find a buffer fit for device's dma mask. It should return an error instead. Devices with an odd dma mask (i.e. under 4G) like b44 network card hit this bug (the system crashes): http://marc.info/?l=linux-kernel&m=129648943830106&w=2 If swiotlb returns an error, b44 driver can use the own bouncing mechanism. Reported-by: Chuck Ebbert Signed-off-by: FUJITA Tomonori Tested-by: Arkadiusz Miskiewicz Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

tree-wide: fix comment/printk typos

2010-11-01T19:38:34+00:00

"gadget", "through", "command", "maintain", "maintain", "controller", "address", "between", "initiali[zs]e", "instead", "function", "select", "already", "equal", "access", "management", "hierarchy", "registration", "interest", "relative", "memory", "offset", "already", Signed-off-by: Uwe Kleine-König Signed-off-by: Jiri Kosina

swiotlb: Use page alignment for early buffer allocation

2010-10-11T21:08:36+00:00

We could call free_bootmem_late() if swiotlb is not used, and it will shrink to page alignment. So alloc them with page alignment at first, to avoid lose two pages before patch: [ 0.000000] memblock_x86_reserve_range: [00d3600000, 00d7600000] swiotlb buffer [ 0.000000] memblock_x86_reserve_range: [00d7e7ef40, 00d7e9ef40] swiotlb list [ 0.000000] memblock_x86_reserve_range: [00d7e3ef40, 00d7e7ef40] swiotlb orig_ad [ 0.000000] memblock_x86_reserve_range: [000008a000, 0000092000] swiotlb overflo after patch will get [ 0.000000] memblock_x86_reserve_range: [00d3600000, 00d7600000] swiotlb buffer [ 0.000000] memblock_x86_reserve_range: [00d7e7e000, 00d7e9e000] swiotlb list [ 0.000000] memblock_x86_reserve_range: [00d7e3e000, 00d7e7e000] swiotlb orig_ad [ 0.000000] memblock_x86_reserve_range: [000008a000, 0000092000] swiotlb overflo Signed-off-by: Yinghai Lu Acked-by: FUJITA Tomonori Cc: Becky Bruce Signed-off-by: Konrad Rzeszutek Wilk

swiotlb: make io_tlb_overflow static

2010-10-11T18:54:27+00:00

We don't need to export io_tlb_overflow_buffer. I'll remove io_tlb_overflow_buffer completely in the long term though. 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