powerpc: make dma_window_* in pci_controller struct avail on 32b

Also, convert them to resource_size_t (which is unsigned long
on 64-bit, so it's not a change there).

We will be using these on fsl 32b to indicate the start and size
address of memory that the pci controller can actually reach - this
is needed to determine if an address requires bounce buffering.  For
now, initialize them to a standard value; in the near future, the
value will be calculated based on how the inbound windows are
programmed.

Signed-off-by: Becky Bruce <beckyb@kernel.crashing.org>
Acked-by: Ben Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/arch/powerpc/sysdev/fsl_pci.c b/arch/powerpc/sysdev/fsl_pci.c
index 78021d8afc5..376603df7c4 100644
--- a/arch/powerpc/sysdev/fsl_pci.c
+++ b/arch/powerpc/sysdev/fsl_pci.c
@@ -152,6 +152,10 @@ static void __init setup_pci_atmu(struct pci_controller *hose,
 	out_be32(&pci->piw[2].piwbar,0x00000000);
 	out_be32(&pci->piw[2].piwar, PIWAR_2G);
 
+	/* Save the base address and size covered by inbound window mappings */
+	hose->dma_window_base_cur = 0x00000000;
+	hose->dma_window_size = 0x80000000;
+
 	iounmap(pci);
 }