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Revert "powerpc/fsl_pci: simplify fsl_pci_dma_set_mask"

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This reverts commit c6e5485e0c
due to failures such as:

e1000e 2000:01:00.0: Tx DMA map failed

Signed-off-by: Scott Wood <oss@buserror.net>
This commit is contained in:
Scott Wood 2018-12-23 20:09:39 -06:00
parent 5f470b3638
commit 63d86876f3
1 changed files with 5 additions and 1 deletions
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6
arch/powerpc/sysdev/fsl_pci.c
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@ -135,7 +135,7 @@ static int fsl_pci_dma_set_mask(struct device *dev, u64 dma_mask)
* mapping that allows addressing any RAM address from across PCI.
*/
if (dev_is_pci(dev) && dma_mask >= pci64_dma_offset * 2 - 1) {
dev->bus_dma_mask = 0;
set_dma_ops(dev, &dma_nommu_ops);
set_dma_offset(dev, pci64_dma_offset);
}
@ -395,6 +395,10 @@ static void setup_pci_atmu(struct pci_controller *hose)
out_be32(&pci->piw[win_idx].piwar, piwar);
}
/*
* install our own dma_set_mask handler to fixup dma_ops
* and dma_offset
*/
ppc_md.dma_set_mask = fsl_pci_dma_set_mask;
pr_info("%pOF: Setup 64-bit PCI DMA window\n", hose->dn);