[ARM] 3062/1: map in various enp2611 peripherals for the ixp2000 netdev driver
Patch from Lennert Buytenhek
The enp2611 version of the ixp2000 netdev driver needs to be able to
access a number of on-board peripherals. ioremap() is not suitable
for this, as that will cause XCB=000 mappings to be done, which will
make the cpu susceptible to crashing on ixp2400 erratum #66. Properly
aligned iotable mappings with MT_IXP2000_DEVICE will cause section
mappings with XCB=101 to be done, which is safe.
Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org>
Signed-off-by: Deepak Saxena <dsaxena@plexity.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mach-ixp2000/enp2611.c b/arch/arm/mach-ixp2000/enp2611.c
index 9aa54de4..b91fe7c 100644
--- a/arch/arm/mach-ixp2000/enp2611.c
+++ b/arch/arm/mach-ixp2000/enp2611.c
@@ -64,6 +64,35 @@
/*************************************************************************
+ * ENP-2611 I/O
+ *************************************************************************/
+static struct map_desc enp2611_io_desc[] __initdata = {
+ {
+ .virtual = ENP2611_CALEB_VIRT_BASE,
+ .physical = ENP2611_CALEB_PHYS_BASE,
+ .length = ENP2611_CALEB_SIZE,
+ .type = MT_IXP2000_DEVICE
+ }, {
+ .virtual = ENP2611_PM3386_0_VIRT_BASE,
+ .physical = ENP2611_PM3386_0_PHYS_BASE,
+ .length = ENP2611_PM3386_0_SIZE,
+ .type = MT_IXP2000_DEVICE
+ }, {
+ .virtual = ENP2611_PM3386_1_VIRT_BASE,
+ .physical = ENP2611_PM3386_1_PHYS_BASE,
+ .length = ENP2611_PM3386_1_SIZE,
+ .type = MT_IXP2000_DEVICE
+ }
+};
+
+void __init enp2611_map_io(void)
+{
+ ixp2000_map_io();
+ iotable_init(enp2611_io_desc, ARRAY_SIZE(enp2611_io_desc));
+}
+
+
+/*************************************************************************
* ENP-2611 PCI
*************************************************************************/
static int enp2611_pci_setup(int nr, struct pci_sys_data *sys)
@@ -229,7 +258,7 @@
.phys_io = IXP2000_UART_PHYS_BASE,
.io_pg_offst = ((IXP2000_UART_VIRT_BASE) >> 18) & 0xfffc,
.boot_params = 0x00000100,
- .map_io = ixp2000_map_io,
+ .map_io = enp2611_map_io,
.init_irq = ixp2000_init_irq,
.timer = &enp2611_timer,
.init_machine = enp2611_init_machine,
