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 <haoke...@gmail.com>
---
arch/powerpc/sysdev/fsl_pci.c | 22 +++-------------------
1 file changed, 3 insertions(+), 19 deletions(-)
diff --git a/arch/powerpc/sysdev/fsl_pci.c b/arch/powerpc/sysdev/fsl_pci.c
index 3833c8f..793e64d 100644
--- a/arch/powerpc/sysdev/fsl_pci.c
+++ b/arch/powerpc/sysdev/fsl_pci.c
@@ -381,7 +381,9 @@ 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);
@@ -934,28 +936,10 @@ 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;
--
1.8.1.4
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