[ARM] 3438/1: ixp23xx: add pci slave support
Patch from Lennert Buytenhek
On the Double Espresso board, the IXP2350s are PCI slave devices and
we skip calling pci_common_init() as that enumerates the bus. But even
though we are a PCI slave device, there is still some PCI-related setup
that has to be done.
Create ixp23xx_pci_common_init(), move the common initialisation bits
there, and have this function called from both the PCI master and the
PCI slave init path.
Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-ixp23xx/espresso.c b/arch/arm/mach-ixp23xx/espresso.c
index 2327c97..bf688c1 100644
--- a/arch/arm/mach-ixp23xx/espresso.c
+++ b/arch/arm/mach-ixp23xx/espresso.c
@@ -44,6 +44,15 @@
#include <asm/mach/irq.h>
#include <asm/mach/pci.h>
+static int __init espresso_pci_init(void)
+{
+ if (machine_is_espresso())
+ ixp23xx_pci_slave_init();
+
+ return 0;
+};
+subsys_initcall(espresso_pci_init);
+
static void __init espresso_init(void)
{
physmap_configure(0x90000000, 0x02000000, 2, NULL);
diff --git a/arch/arm/mach-ixp23xx/pci.c b/arch/arm/mach-ixp23xx/pci.c
index 5330ad7..ba6b436 100644
--- a/arch/arm/mach-ixp23xx/pci.c
+++ b/arch/arm/mach-ixp23xx/pci.c
@@ -201,7 +201,7 @@
return 0;
}
-void __init ixp23xx_pci_preinit(void)
+static void __init ixp23xx_pci_common_init(void)
{
#ifdef __ARMEB__
*IXP23XX_PCI_CONTROL |= 0x20000; /* set I/O swapping */
@@ -220,6 +220,11 @@
} else {
*IXP23XX_PCI_CPP_ADDR_BITS |= (1 << 1);
}
+}
+
+void __init ixp23xx_pci_preinit(void)
+{
+ ixp23xx_pci_common_init();
hook_fault_code(16+6, ixp23xx_pci_abort_handler, SIGBUS,
"PCI config cycle to non-existent device");
@@ -273,3 +278,8 @@
return 1;
}
+
+void ixp23xx_pci_slave_init(void)
+{
+ ixp23xx_pci_common_init();
+}