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authorLennert Buytenhek <buytenh@wantstofly.org>2005-11-01 14:44:24 -0500
committerRussell King <rmk+kernel@arm.linux.org.uk>2005-11-01 14:44:24 -0500
commita6f1063b388cfd48a598cc7971eae1f83ebc8ba4 (patch)
tree229a5d899fef3c181b1624e0c73572b894cac9de /arch/arm
parent37bb30e86bc2e48d9affb25f6ce9eb3d8e65b2ac (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/arm')
-rw-r--r--arch/arm/mach-ixp2000/enp2611.c31
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 = {
64 64
65 65
66/************************************************************************* 66/*************************************************************************
67 * ENP-2611 I/O
68 *************************************************************************/
69static struct map_desc enp2611_io_desc[] __initdata = {
70 {
71 .virtual = ENP2611_CALEB_VIRT_BASE,
72 .physical = ENP2611_CALEB_PHYS_BASE,
73 .length = ENP2611_CALEB_SIZE,
74 .type = MT_IXP2000_DEVICE
75 }, {
76 .virtual = ENP2611_PM3386_0_VIRT_BASE,
77 .physical = ENP2611_PM3386_0_PHYS_BASE,
78 .length = ENP2611_PM3386_0_SIZE,
79 .type = MT_IXP2000_DEVICE
80 }, {
81 .virtual = ENP2611_PM3386_1_VIRT_BASE,
82 .physical = ENP2611_PM3386_1_PHYS_BASE,
83 .length = ENP2611_PM3386_1_SIZE,
84 .type = MT_IXP2000_DEVICE
85 }
86};
87
88void __init enp2611_map_io(void)
89{
90 ixp2000_map_io();
91 iotable_init(enp2611_io_desc, ARRAY_SIZE(enp2611_io_desc));
92}
93
94
95/*************************************************************************
67 * ENP-2611 PCI 96 * ENP-2611 PCI
68 *************************************************************************/ 97 *************************************************************************/
69static int enp2611_pci_setup(int nr, struct pci_sys_data *sys) 98static 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")
229 .phys_io = IXP2000_UART_PHYS_BASE, 258 .phys_io = IXP2000_UART_PHYS_BASE,
230 .io_pg_offst = ((IXP2000_UART_VIRT_BASE) >> 18) & 0xfffc, 259 .io_pg_offst = ((IXP2000_UART_VIRT_BASE) >> 18) & 0xfffc,
231 .boot_params = 0x00000100, 260 .boot_params = 0x00000100,
232 .map_io = ixp2000_map_io, 261 .map_io = enp2611_map_io,
233 .init_irq = ixp2000_init_irq, 262 .init_irq = ixp2000_init_irq,
234 .timer = &enp2611_timer, 263 .timer = &enp2611_timer,
235 .init_machine = enp2611_init_machine, 264 .init_machine = enp2611_init_machine,