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| author | FUJITA Tomonori <tomof@acm.org> | 2008-02-04 22:28:14 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2008-02-05 09:44:12 -0800 |
| commit | 59fc67dedb46c29442989e52af39da67aea52512 (patch) | |
| tree | d75eb8ce840e1f9d2a2e2dd939e28396750186fb /drivers/pci | |
| parent | d22a6966b8029913fac37d078ab2403898d94c63 (diff) | |
| download | blackbird-op-linux-59fc67dedb46c29442989e52af39da67aea52512.tar.gz blackbird-op-linux-59fc67dedb46c29442989e52af39da67aea52512.zip | |
iommu sg merging: PCI: add dma segment boundary support
This adds PCI's accessor for segment_boundary_mask in device_dma_parameters.
The default segment_boundary is set to 0xffffffff, same to the block layer's
default value (and the scsi mid layer uses the same value).
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: Jens Axboe <jens.axboe@oracle.com>
Cc: Greg KH <greg@kroah.com>
Cc: Jeff Garzik <jeff@garzik.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/pci')
| -rw-r--r-- | drivers/pci/pci.c | 8 | ||||
| -rw-r--r-- | drivers/pci/probe.c | 1 |
2 files changed, 9 insertions, 0 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index be97090ddf32..ae3df46eaabf 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -1459,6 +1459,14 @@ int pci_set_dma_max_seg_size(struct pci_dev *dev, unsigned int size) EXPORT_SYMBOL(pci_set_dma_max_seg_size); #endif +#ifndef HAVE_ARCH_PCI_SET_DMA_SEGMENT_BOUNDARY +int pci_set_dma_seg_boundary(struct pci_dev *dev, unsigned long mask) +{ + return dma_set_seg_boundary(&dev->dev, mask); +} +EXPORT_SYMBOL(pci_set_dma_seg_boundary); +#endif + /** * pcix_get_max_mmrbc - get PCI-X maximum designed memory read byte count * @dev: PCI device to query diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index f47d596d5ebc..4d23b9fb551b 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -937,6 +937,7 @@ void pci_device_add(struct pci_dev *dev, struct pci_bus *bus) dev->dev.coherent_dma_mask = 0xffffffffull; pci_set_dma_max_seg_size(dev, 65536); + pci_set_dma_seg_boundary(dev, 0xffffffff); /* Fix up broken headers */ pci_fixup_device(pci_fixup_header, dev); |
