[MIPS] BCM1480: Fix PCI/HT IO access

- removed check for enable HT-PCI bridges, because some CFE version
  init only the needed one and scanning works even with disabled HT
  links
- implemented I/O access behind HT PCI busses
- fixed pci_map for IO resource behind PCI bridge

Tested with E100 and Tulip driver.

Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

1 files changed, 4 insertions, 2 deletions

diff --git a/arch/mips/pci/pci-bcm1480.c b/arch/mips/pci/pci-bcm1480.c
index ab68c4318a3..87e2c8f54e2 100644
--- a/arch/mips/pci/pci-bcm1480.c
+++ b/arch/mips/pci/pci-bcm1480.c
@@ -185,8 +185,8 @@ static struct resource bcm1480_mem_resource = {
 
 static struct resource bcm1480_io_resource = {
 	.name	= "BCM1480 PCI I/O",
-	.start	= 0x2c000000UL,
-	.end	= 0x2dffffffUL,
+	.start	= A_BCM1480_PHYS_PCI_IO_MATCH_BYTES,
+	.end	= A_BCM1480_PHYS_PCI_IO_MATCH_BYTES + 0x1ffffffUL,
 	.flags	= IORESOURCE_IO,
 };
 
@@ -194,6 +194,7 @@ struct pci_controller bcm1480_controller = {
 	.pci_ops	= &bcm1480_pci_ops,
 	.mem_resource	= &bcm1480_mem_resource,
 	.io_resource	= &bcm1480_io_resource,
+	.io_offset      = A_BCM1480_PHYS_PCI_IO_MATCH_BYTES,
 };
 
 
@@ -251,6 +252,7 @@ static int __init bcm1480_pcibios_init(void)
 
 	bcm1480_controller.io_map_base = (unsigned long)
 		ioremap(A_BCM1480_PHYS_PCI_IO_MATCH_BYTES, 65536);
+	bcm1480_controller.io_map_base -= bcm1480_controller.io_offset;
 	set_io_port_base(bcm1480_controller.io_map_base);
 	isa_slot_offset = (unsigned long)
 		ioremap(A_BCM1480_PHYS_PCI_MEM_MATCH_BYTES, 1024*1024);