IB/ipath: set up 32-bit DMA mask if 64-bit setup fails
Some systems do not set up 64-bit maps on systems with 2GB or less of memory installed, so we have to fall back to trying a 32-bit setup. Signed-off-by: Bryan O'Sullivan <bos@pathscale.com> Signed-off-by: Roland Dreier <rolandd@cisco.com>
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755e4ca4a9
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68dd43a162
1 changed files with 13 additions and 3 deletions
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@ -418,9 +418,19 @@ static int __devinit ipath_init_one(struct pci_dev *pdev,
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ret = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
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ret = pci_set_dma_mask(pdev, DMA_64BIT_MASK);
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if (ret) {
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if (ret) {
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dev_info(&pdev->dev, "pci_set_dma_mask unit %u "
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/*
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"fails: %d\n", dd->ipath_unit, ret);
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* if the 64 bit setup fails, try 32 bit. Some systems
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goto bail_regions;
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* do not setup 64 bit maps on systems with 2GB or less
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* memory installed.
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*/
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ret = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
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if (ret) {
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dev_info(&pdev->dev, "pci_set_dma_mask unit %u "
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"fails: %d\n", dd->ipath_unit, ret);
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goto bail_regions;
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}
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else
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ipath_dbg("No 64bit DMA mask, used 32 bit mask\n");
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}
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}
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pci_set_master(pdev);
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pci_set_master(pdev);
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