iommu sg merging: PCI: add device_dma_parameters support
This adds struct device_dma_parameters in struct pci_dev and properly sets up a pointer in struct device. The default max_segment_size is set to 64K, same to the block layer's default value. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Mostly-acked-by: Jeff Garzik <jeff@garzik.org> Cc: James Bottomley <James.Bottomley@steeleye.com> Acked-by: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Linus Torvalds
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6b7b651055
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4d57cdfaca
@ -159,6 +159,8 @@ struct pci_dev {
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this if your device has broken DMA
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or supports 64-bit transfers. */
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struct device_dma_parameters dma_parms;
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pci_power_t current_state; /* Current operating state. In ACPI-speak,
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this is D0-D3, D0 being fully functional,
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and D3 being off. */
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@ -580,6 +582,7 @@ void pci_intx(struct pci_dev *dev, int enable);
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void pci_msi_off(struct pci_dev *dev);
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int pci_set_dma_mask(struct pci_dev *dev, u64 mask);
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int pci_set_consistent_dma_mask(struct pci_dev *dev, u64 mask);
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int pci_set_dma_max_seg_size(struct pci_dev *dev, unsigned int size);
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int pcix_get_max_mmrbc(struct pci_dev *dev);
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int pcix_get_mmrbc(struct pci_dev *dev);
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int pcix_set_mmrbc(struct pci_dev *dev, int mmrbc);
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@ -822,6 +825,12 @@ static inline int pci_set_dma_mask(struct pci_dev *dev, u64 mask)
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return -EIO;
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}
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static inline int pci_set_dma_max_seg_size(struct pci_dev *dev,
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unsigned int size)
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{
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return -EIO;
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}
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static inline int pci_assign_resource(struct pci_dev *dev, int i)
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{
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return -EBUSY;
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