diff options
| author | Lennert Buytenhek <buytenh@wantstofly.org> | 2005-11-01 19:44:24 +0000 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2005-11-01 19:44:24 +0000 |
| commit | a6f1063b388cfd48a598cc7971eae1f83ebc8ba4 (patch) | |
| tree | 229a5d899fef3c181b1624e0c73572b894cac9de /arch | |
| parent | 37bb30e86bc2e48d9affb25f6ce9eb3d8e65b2ac (diff) | |
[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>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/mach-ixp2000/enp2611.c | 31 |
1 files changed, 30 insertions, 1 deletions
diff --git a/arch/arm/mach-ixp2000/enp2611.c b/arch/arm/mach-ixp2000/enp2611.c index 9aa54de44740..b91fe7c80fac 100644 --- a/arch/arm/mach-ixp2000/enp2611.c +++ b/arch/arm/mach-ixp2000/enp2611.c @@ -64,6 +64,35 @@ static struct sys_timer enp2611_timer = { /************************************************************************* + * 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 @@ MACHINE_START(ENP2611, "Radisys ENP-2611 PCI network processor board") .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, |