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  1. 30 10月, 2012 2 次提交
    • A
      swiotlb: Use physical addresses for swiotlb_tbl_unmap_single · 61ca08c3
      由 Alexander Duyck 提交于 
      This change makes it so that the unmap functionality also uses physical
addresses.  This helps to further reduce the use of virt_to_phys and
phys_to_virt functions.

In order to clarify things since we now have 2 physical addresses in use
inside of swiotlb_tbl_unmap_single I am renaming phys to orig_addr, and
dma_addr to tlb_addr.  This way is should be clear that orig_addr is
contained within io_orig_addr and tlb_addr is an address within the
io_tlb_addr buffer.
Signed-off-by: NAlexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
      61ca08c3
    • A
      swiotlb: Return physical addresses when calling swiotlb_tbl_map_single · e05ed4d1
      由 Alexander Duyck 提交于 
      This change makes it so that swiotlb_tbl_map_single will return a physical
address instead of a virtual address when called.  The advantage to this once
again is that we are avoiding a number of virt_to_phys and phys_to_virt
translations by working with everything as a physical address.

One change I had to make in order to support using physical addresses is that
I could no longer trust 0 to be a invalid physical address on all platforms.
So instead I made it so that ~0 is returned on error.  This should never be a
valid return value as it implies that only one byte would be available for
use.

In order to clarify things since we now have 2 physical addresses in use
inside of swiotlb_tbl_map_single I am renaming phys to orig_addr, and
dma_addr to tlb_addr.  This way is should be clear that orig_addr is
contained within io_orig_addr and tlb_addr is an address within the
io_tlb_addr buffer.
Signed-off-by: NAlexander Duyck <alexander.h.duyck@intel.com>
Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
      e05ed4d1
  3. 22 8月, 2012 1 次提交
  5. 06 12月, 2011 1 次提交
  7. 07 6月, 2011 1 次提交
    • F
      swiotlb: Export swioltb_nr_tbl and utilize it as appropiate. · 5f98ecdb
      由 FUJITA Tomonori 提交于 
      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=<nslabs>' 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: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: NKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>
      5f98ecdb
  9. 07 6月, 2010 3 次提交
  11. 28 5月, 2010 1 次提交
  13. 15 11月, 2009 1 次提交
  15. 10 11月, 2009 2 次提交
    • F
      swiotlb: Defer swiotlb init printing, export swiotlb_print_info() · ad32e8cb
      由 FUJITA Tomonori 提交于 
      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: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
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: NIngo Molnar <mingo@elte.hu>
      ad32e8cb
    • F
      swiotlb: Add swiotlb_free() function · 5740afdb
      由 FUJITA Tomonori 提交于 
      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: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
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: NIngo Molnar <mingo@elte.hu>
      5740afdb
  17. 28 7月, 2009 4 次提交
  19. 08 4月, 2009 1 次提交
  21. 11 1月, 2009 1 次提交
  23. 06 1月, 2009 2 次提交
  25. 28 12月, 2008 1 次提交
  27. 18 12月, 2008 2 次提交
  29. 17 12月, 2008 2 次提交
  31. 17 10月, 2008 1 次提交