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iommu sg merging: PCI: add dma segment boundary support

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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>
This commit is contained in:
FUJITA Tomonori
2008-02-04 22:28:14 -08:00
committed by Linus Torvalds
parent d22a6966b8
commit 59fc67dedb
3 changed files with 16 additions and 0 deletions
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7
include/linux/pci.h
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@ -583,6 +583,7 @@ void pci_msi_off(struct pci_dev *dev);
int pci_set_dma_mask(struct pci_dev *dev, u64 mask);
int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask);
int pci_set_dma_max_seg_size(struct pci_dev *dev, unsigned int size);
int pci_set_dma_seg_boundary(struct pci_dev *dev, unsigned long mask);
int pcix_get_max_mmrbc(struct pci_dev *dev);
int pcix_get_mmrbc(struct pci_dev *dev);
int pcix_set_mmrbc(struct pci_dev *dev, int mmrbc);
@ -831,6 +832,12 @@ static inline int pci_set_dma_max_seg_size(struct pci_dev *dev,
return -EIO;
}
static inline int pci_set_dma_seg_boundary(struct pci_dev *dev,
unsigned long mask)
{
return -EIO;
}
static inline int pci_assign_resource(struct pci_dev *dev, int i)
{
return -EBUSY;