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powerpc/fsl-pci: enable SWIOTLB in function setup_pci_atmu

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This function contains all the stuff we need to check if SWIOTLB
should be enabled or not. So it is more convenient to enable
the SWIOTLB here than later.

Signed-off-by: Kevin Hao <haokexin@gmail.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>
This commit is contained in:
Kevin Hao 2013-05-21 20:05:00 +08:00 committed by Scott Wood
parent 2d49c42a30
commit c45e91831b
1 changed files with 3 additions and 19 deletions
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22
arch/powerpc/sysdev/fsl_pci.c
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@ -377,7 +377,9 @@ static void setup_pci_atmu(struct pci_controller *hose)
}
if (hose->dma_window_size < mem) {
#ifndef CONFIG_SWIOTLB
#ifdef CONFIG_SWIOTLB
ppc_swiotlb_enable = 1;
#else
pr_err("%s: ERROR: Memory size exceeds PCI ATMU ability to "
"map - enable CONFIG_SWIOTLB to avoid dma errors.\n",
name);
@ -1086,28 +1088,10 @@ static int fsl_pci_probe(struct platform_device *pdev)
{
int ret;
struct device_node *node;
#ifdef CONFIG_SWIOTLB
struct pci_controller *hose;
#endif
node = pdev->dev.of_node;
ret = fsl_add_bridge(pdev, fsl_pci_primary == node);
#ifdef CONFIG_SWIOTLB
if (ret == 0) {
hose = pci_find_hose_for_OF_device(pdev->dev.of_node);
/*
* if we couldn't map all of DRAM via the dma windows
* we need SWIOTLB to handle buffers located outside of
* dma capable memory region
*/
if (memblock_end_of_DRAM() - 1 > hose->dma_window_base_cur +
hose->dma_window_size)
ppc_swiotlb_enable = 1;
}
#endif
mpc85xx_pci_err_probe(pdev);
return 0;