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Message-Id: <12144385273321-git-send-email-kaloz@openwrt.org>
Date: Thu, 26 Jun 2008 02:02:07 +0200
From: Imre Kaloz <kaloz@...nwrt.org>
To: linux-arm-kernel@...ts.arm.linux.org.uk
Cc: netdev@...r.kernel.org, khc@...waw.pl
Subject: [PATCH] Add support for the ethernet ports on IXP43x
---
arch/arm/mach-ixp4xx/ixp4xx_npe.c | 6 +++---
drivers/net/arm/ixp4xx_eth.c | 13 +++++++++----
include/asm-arm/arch-ixp4xx/cpu.h | 2 ++
include/asm-arm/arch-ixp4xx/ixp4xx-regs.h | 7 ++++---
4 files changed, 18 insertions(+), 10 deletions(-)
diff --git a/arch/arm/mach-ixp4xx/ixp4xx_npe.c b/arch/arm/mach-ixp4xx/ixp4xx_npe.c
index 63a23fa..cb92702 100644
--- a/arch/arm/mach-ixp4xx/ixp4xx_npe.c
+++ b/arch/arm/mach-ixp4xx/ixp4xx_npe.c
@@ -575,8 +575,8 @@ int npe_load_firmware(struct npe *npe, const char *name, struct device *dev)
for (i = 0; i < image->size; i++)
image->data[i] = swab32(image->data[i]);
- if (!cpu_is_ixp46x() && ((image->id >> 28) & 0xF /* device ID */)) {
- print_npe(KERN_INFO, npe, "IXP46x firmware ignored on "
+ if (cpu_is_ixp42x() && ((image->id >> 28) & 0xF /* device ID */)) {
+ print_npe(KERN_INFO, npe, "IXP46x/IXP43x firmware ignored on "
"IXP42x\n");
goto err;
}
@@ -596,7 +596,7 @@ int npe_load_firmware(struct npe *npe, const char *name, struct device *dev)
"revision 0x%X:%X\n", (image->id >> 16) & 0xFF,
(image->id >> 8) & 0xFF, image->id & 0xFF);
- if (!cpu_is_ixp46x()) {
+ if (cpu_is_ixp42x()) {
if (!npe->id)
instr_size = NPE_A_42X_INSTR_SIZE;
else
diff --git a/drivers/net/arm/ixp4xx_eth.c b/drivers/net/arm/ixp4xx_eth.c
index c617b64..aaf7fa6 100644
--- a/drivers/net/arm/ixp4xx_eth.c
+++ b/drivers/net/arm/ixp4xx_eth.c
@@ -32,6 +32,7 @@
#include <linux/kernel.h>
#include <linux/mii.h>
#include <linux/platform_device.h>
+#include <asm/arch/cpu.h>
#include <asm/arch/npe.h>
#include <asm/arch/qmgr.h>
@@ -1241,12 +1242,16 @@ static struct platform_driver drv = {
static int __init eth_init_module(void)
{
- if (!(ixp4xx_read_feature_bits() & IXP4XX_FEATURE_NPEB_ETH0))
- return -ENOSYS;
- /* All MII PHY accesses use NPE-B Ethernet registers */
spin_lock_init(&mdio_lock);
- mdio_regs = (struct eth_regs __iomem *)IXP4XX_EthB_BASE_VIRT;
+ if (!cpu_is_ixp43x())
+ /* All MII PHY accesses use NPE-B Ethernet registers */
+ mdio_regs = (struct eth_regs __iomem *)IXP4XX_EthB_BASE_VIRT;
+
+ else
+ /* IXP43x lacks NPE-B and uses NPE-C for MII PHY access */
+ mdio_regs = (struct eth_regs __iomem *)IXP4XX_EthC_BASE_VIRT;
+
__raw_writel(DEFAULT_CORE_CNTRL, &mdio_regs->core_control);
return platform_driver_register(&drv);
diff --git a/include/asm-arm/arch-ixp4xx/cpu.h b/include/asm-arm/arch-ixp4xx/cpu.h
index 2fa3d6b..0821cf2 100644
--- a/include/asm-arm/arch-ixp4xx/cpu.h
+++ b/include/asm-arm/arch-ixp4xx/cpu.h
@@ -34,6 +34,8 @@ static inline u32 ixp4xx_read_feature_bits(void)
val &= ~IXP4XX_FEATURE_RESERVED;
if (!cpu_is_ixp46x())
val &= ~IXP4XX_FEATURE_IXP46X_ONLY;
+ if (cpu_is_ixp42x())
+ val &= ~IXP4XX_FEATURE_IXP43X_46X;
return val;
}
diff --git a/include/asm-arm/arch-ixp4xx/ixp4xx-regs.h b/include/asm-arm/arch-ixp4xx/ixp4xx-regs.h
index 68aca85..1d0a218 100644
--- a/include/asm-arm/arch-ixp4xx/ixp4xx-regs.h
+++ b/include/asm-arm/arch-ixp4xx/ixp4xx-regs.h
@@ -628,11 +628,12 @@
#define IXP4XX_FEATURE_XSCALE_MAX_FREQ (3 << 22)
#define IXP4XX_FEATURE_RESERVED (0xFF << 24)
-#define IXP4XX_FEATURE_IXP46X_ONLY (IXP4XX_FEATURE_ECC_TIMESYNC | \
+#define IXP4XX_FEATURE_IXP43X_46X (IXP4XX_FEATURE_ECC_TIMESYNC | \
IXP4XX_FEATURE_USB_HOST | \
IXP4XX_FEATURE_NPEA_ETH | \
- IXP4XX_FEATURE_NPEB_ETH_1_TO_3 | \
- IXP4XX_FEATURE_RSA | \
IXP4XX_FEATURE_XSCALE_MAX_FREQ)
+#define IXP4XX_FEATURE_IXP46X_ONLY (IXP4XX_FEATURE_NPEB_ETH_1_TO_3 | \
+ IXP4XX_FEATURE_RSA)
+
#endif
--
1.5.2.5
--
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