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| author | Jens Axboe <jens.axboe@oracle.com> | 2007-10-16 11:27:26 +0200 |
|---|---|---|
| committer | Jens Axboe <jens.axboe@oracle.com> | 2007-10-16 11:27:26 +0200 |
| commit | 9b6eccfccbfb2cde5405021beaad2ebb8081a2e9 (patch) | |
| tree | e78df431ed46019dedcd7e4c3e0282a7de20686f /arch/ia64/sn/pci | |
| parent | 46856afa01769db3a5b16c3f57aa5bca45729edd (diff) | |
| download | linux-3.10-9b6eccfccbfb2cde5405021beaad2ebb8081a2e9.tar.gz linux-3.10-9b6eccfccbfb2cde5405021beaad2ebb8081a2e9.tar.bz2 linux-3.10-9b6eccfccbfb2cde5405021beaad2ebb8081a2e9.zip | |
IA64: sg chaining support
This updates the ia64 iommu/pci dma mappers to sg chaining.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Diffstat (limited to 'arch/ia64/sn/pci')
| -rw-r--r-- | arch/ia64/sn/pci/pci_dma.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/arch/ia64/sn/pci/pci_dma.c b/arch/ia64/sn/pci/pci_dma.c index d79ddacfba2..ecd8a52b9b9 100644 --- a/arch/ia64/sn/pci/pci_dma.c +++ b/arch/ia64/sn/pci/pci_dma.c @@ -218,16 +218,17 @@ EXPORT_SYMBOL(sn_dma_unmap_single); * * Unmap a set of streaming mode DMA translations. */ -void sn_dma_unmap_sg(struct device *dev, struct scatterlist *sg, +void sn_dma_unmap_sg(struct device *dev, struct scatterlist *sgl, int nhwentries, int direction) { int i; struct pci_dev *pdev = to_pci_dev(dev); struct sn_pcibus_provider *provider = SN_PCIDEV_BUSPROVIDER(pdev); + struct scatterlist *sg; BUG_ON(dev->bus != &pci_bus_type); - for (i = 0; i < nhwentries; i++, sg++) { + for_each_sg(sgl, sg, nhwentries, i) { provider->dma_unmap(pdev, sg->dma_address, direction); sg->dma_address = (dma_addr_t) NULL; sg->dma_length = 0; @@ -244,11 +245,11 @@ EXPORT_SYMBOL(sn_dma_unmap_sg); * * Maps each entry of @sg for DMA. */ -int sn_dma_map_sg(struct device *dev, struct scatterlist *sg, int nhwentries, +int sn_dma_map_sg(struct device *dev, struct scatterlist *sgl, int nhwentries, int direction) { unsigned long phys_addr; - struct scatterlist *saved_sg = sg; + struct scatterlist *saved_sg = sgl, *sg; struct pci_dev *pdev = to_pci_dev(dev); struct sn_pcibus_provider *provider = SN_PCIDEV_BUSPROVIDER(pdev); int i; @@ -258,7 +259,7 @@ int sn_dma_map_sg(struct device *dev, struct scatterlist *sg, int nhwentries, /* * Setup a DMA address for each entry in the scatterlist. */ - for (i = 0; i < nhwentries; i++, sg++) { + for_each_sg(sgl, sg, nhwentries, i) { phys_addr = SG_ENT_PHYS_ADDRESS(sg); sg->dma_address = provider->dma_map(pdev, phys_addr, sg->length, |