6 files changed, 82 insertions, 47 deletions

diff --git a/arch/arm/include/asm/sizes.h b/arch/arm/include/asm/sizes.h
index 503843db156..c10d1aa4b48 100644
--- a/arch/arm/include/asm/sizes.h
+++ b/arch/arm/include/asm/sizes.h
@@ -43,6 +43,7 @@
 #define SZ_8M                           0x00800000
 #define SZ_16M                          0x01000000
 #define SZ_32M                          0x02000000
+#define SZ_48M                          0x03000000
 #define SZ_64M                          0x04000000
 #define SZ_128M                         0x08000000
 #define SZ_256M                         0x10000000
diff --git a/arch/arm/mach-ixp4xx/common-pci.c b/arch/arm/mach-ixp4xx/common-pci.c
index d816c51320c..70afcfe5b88 100644
--- a/arch/arm/mach-ixp4xx/common-pci.c
+++ b/arch/arm/mach-ixp4xx/common-pci.c
@@ -366,7 +366,7 @@ void __init ixp4xx_adjust_zones(int node, unsigned long *zone_size,
 }
 
 void __init ixp4xx_pci_preinit(void)
-{  
+{
         unsigned long cpuid = read_cpuid_id();
 
         /*
@@ -386,17 +386,17 @@ void __init ixp4xx_pci_preinit(void)
 
         pr_debug("setup PCI-AHB(inbound) and AHB-PCI(outbound) address mappings\n");
 
-        /* 
+        /*
          * We use identity AHB->PCI address translation
          * in the 0x48000000 to 0x4bffffff address space
          */
         *PCI_PCIMEMBASE = 0x48494A4B;
 
-        /* 
+        /*
          * We also use identity PCI->AHB address translation
          * in 4 16MB BARs that begin at the physical memory start
          */
-        *PCI_AHBMEMBASE = (PHYS_OFFSET & 0xFF000000) + 
+        *PCI_AHBMEMBASE = (PHYS_OFFSET & 0xFF000000) +
                 ((PHYS_OFFSET & 0xFF000000) >> 8) +
                 ((PHYS_OFFSET & 0xFF000000) >> 16) +
                 ((PHYS_OFFSET & 0xFF000000) >> 24) +
@@ -408,18 +408,19 @@ void __init ixp4xx_pci_preinit(void)
                 pr_debug("setup BARs in controller\n");
 
                 /*
-                 * We configure the PCI inbound memory windows to be 
+                 * We configure the PCI inbound memory windows to be
                  * 1:1 mapped to SDRAM
                  */
-                local_write_config(PCI_BASE_ADDRESS_0, 4, PHYS_OFFSET + 0x00000000);
-                local_write_config(PCI_BASE_ADDRESS_1, 4, PHYS_OFFSET + 0x01000000);
-                local_write_config(PCI_BASE_ADDRESS_2, 4, PHYS_OFFSET + 0x02000000);
-                local_write_config(PCI_BASE_ADDRESS_3, 4, PHYS_OFFSET + 0x03000000);
+                local_write_config(PCI_BASE_ADDRESS_0, 4, PHYS_OFFSET);
+                local_write_config(PCI_BASE_ADDRESS_1, 4, PHYS_OFFSET + SZ_16M);
+                local_write_config(PCI_BASE_ADDRESS_2, 4, PHYS_OFFSET + SZ_32M);
+                local_write_config(PCI_BASE_ADDRESS_3, 4, PHYS_OFFSET + SZ_48M);
 
                 /*
-                 * Enable CSR window at 0xff000000.
+                 * Enable CSR window at 64 MiB to allow PCI masters
+                 * to continue prefetching past 64 MiB boundary.
                  */
-                local_write_config(PCI_BASE_ADDRESS_4, 4, 0xff000008);
+                local_write_config(PCI_BASE_ADDRESS_4, 4, PHYS_OFFSET + SZ_64M);
 
                 /*
                  * Enable the IO window to be way up high, at 0xfffffc00
@@ -500,7 +501,7 @@ int ixp4xx_setup(int nr, struct pci_sys_data *sys)
         return 1;
 }
 
-struct pci_bus *ixp4xx_scan_bus(int nr, struct pci_sys_data *sys)
+struct pci_bus * __devinit ixp4xx_scan_bus(int nr, struct pci_sys_data *sys)
 {
         return pci_scan_bus(sys->busnr, &ixp4xx_ops, sys);
 }
diff --git a/arch/arm/mach-ixp4xx/include/mach/cpu.h b/arch/arm/mach-ixp4xx/include/mach/cpu.h
index 51bd69c46d9..def7773be67 100644
--- a/arch/arm/mach-ixp4xx/include/mach/cpu.h
+++ b/arch/arm/mach-ixp4xx/include/mach/cpu.h
@@ -17,26 +17,31 @@
 #include <asm/cputype.h>
 
 /* Processor id value in CP15 Register 0 */
-#define IXP425_PROCESSOR_ID_VALUE       0x690541c0
-#define IXP435_PROCESSOR_ID_VALUE       0x69054040
-#define IXP465_PROCESSOR_ID_VALUE       0x69054200
-#define IXP4XX_PROCESSOR_ID_MASK        0xfffffff0
-
-#define cpu_is_ixp42x() ((read_cpuid_id() & IXP4XX_PROCESSOR_ID_MASK) == \
-                          IXP425_PROCESSOR_ID_VALUE)
-#define cpu_is_ixp43x() ((read_cpuid_id() & IXP4XX_PROCESSOR_ID_MASK) == \
-                          IXP435_PROCESSOR_ID_VALUE)
-#define cpu_is_ixp46x() ((read_cpuid_id() & IXP4XX_PROCESSOR_ID_MASK) == \
-                          IXP465_PROCESSOR_ID_VALUE)
+#define IXP42X_PROCESSOR_ID_VALUE       0x690541c0 /* including unused 0x690541Ex */
+#define IXP42X_PROCESSOR_ID_MASK        0xffffffc0
+
+#define IXP43X_PROCESSOR_ID_VALUE       0x69054040
+#define IXP43X_PROCESSOR_ID_MASK        0xfffffff0
+
+#define IXP46X_PROCESSOR_ID_VALUE       0x69054200 /* including IXP455 */
+#define IXP46X_PROCESSOR_ID_MASK        0xfffffff0
+
+#define cpu_is_ixp42x() ((read_cpuid_id() & IXP42X_PROCESSOR_ID_MASK) == \
+                         IXP42X_PROCESSOR_ID_VALUE)
+#define cpu_is_ixp43x() ((read_cpuid_id() & IXP43X_PROCESSOR_ID_MASK) == \
+                         IXP43X_PROCESSOR_ID_VALUE)
+#define cpu_is_ixp46x() ((read_cpuid_id() & IXP46X_PROCESSOR_ID_MASK) == \
+                         IXP46X_PROCESSOR_ID_VALUE)
 
 static inline u32 ixp4xx_read_feature_bits(void)
 {
         unsigned int val = ~*IXP4XX_EXP_CFG2;
-        val &= ~IXP4XX_FEATURE_RESERVED;
-        if (!cpu_is_ixp46x())
-                val &= ~IXP4XX_FEATURE_IXP46X_ONLY;
 
-        return val;
+        if (cpu_is_ixp42x())
+                return val & IXP42X_FEATURE_MASK;
+        if (cpu_is_ixp43x())
+                return val & IXP43X_FEATURE_MASK;
+        return val & IXP46X_FEATURE_MASK;
 }
 
 static inline void ixp4xx_write_feature_bits(u32 value)
diff --git a/arch/arm/mach-ixp4xx/include/mach/ixp4xx-regs.h b/arch/arm/mach-ixp4xx/include/mach/ixp4xx-regs.h
index ad9c888dd85..97c530f66e7 100644
--- a/arch/arm/mach-ixp4xx/include/mach/ixp4xx-regs.h
+++ b/arch/arm/mach-ixp4xx/include/mach/ixp4xx-regs.h
@@ -604,6 +604,7 @@
 #define DCMD_LENGTH     0x01fff         /* length mask (max = 8K - 1) */
 
 /* "fuse" bits of IXP_EXP_CFG2 */
+/* All IXP4xx CPUs */
 #define IXP4XX_FEATURE_RCOMP            (1 << 0)
 #define IXP4XX_FEATURE_USB_DEVICE       (1 << 1)
 #define IXP4XX_FEATURE_HASH             (1 << 2)
@@ -619,20 +620,41 @@
 #define IXP4XX_FEATURE_RESET_NPEB       (1 << 12)
 #define IXP4XX_FEATURE_RESET_NPEC       (1 << 13)
 #define IXP4XX_FEATURE_PCI              (1 << 14)
-#define IXP4XX_FEATURE_ECC_TIMESYNC     (1 << 15)
 #define IXP4XX_FEATURE_UTOPIA_PHY_LIMIT (3 << 16)
+#define IXP4XX_FEATURE_XSCALE_MAX_FREQ  (3 << 22)
+#define IXP42X_FEATURE_MASK             (IXP4XX_FEATURE_RCOMP            | \
+                                         IXP4XX_FEATURE_USB_DEVICE       | \
+                                         IXP4XX_FEATURE_HASH             | \
+                                         IXP4XX_FEATURE_AES              | \
+                                         IXP4XX_FEATURE_DES              | \
+                                         IXP4XX_FEATURE_HDLC             | \
+                                         IXP4XX_FEATURE_AAL              | \
+                                         IXP4XX_FEATURE_HSS              | \
+                                         IXP4XX_FEATURE_UTOPIA           | \
+                                         IXP4XX_FEATURE_NPEB_ETH0        | \
+                                         IXP4XX_FEATURE_NPEC_ETH         | \
+                                         IXP4XX_FEATURE_RESET_NPEA       | \
+                                         IXP4XX_FEATURE_RESET_NPEB       | \
+                                         IXP4XX_FEATURE_RESET_NPEC       | \
+                                         IXP4XX_FEATURE_PCI              | \
+                                         IXP4XX_FEATURE_UTOPIA_PHY_LIMIT | \
+                                         IXP4XX_FEATURE_XSCALE_MAX_FREQ)
+
+
+/* IXP43x/46x CPUs */
+#define IXP4XX_FEATURE_ECC_TIMESYNC     (1 << 15)
 #define IXP4XX_FEATURE_USB_HOST         (1 << 18)
 #define IXP4XX_FEATURE_NPEA_ETH         (1 << 19)
+#define IXP43X_FEATURE_MASK             (IXP42X_FEATURE_MASK             | \
+                                         IXP4XX_FEATURE_ECC_TIMESYNC     | \
+                                         IXP4XX_FEATURE_USB_HOST         | \
+                                         IXP4XX_FEATURE_NPEA_ETH)
+
+/* IXP46x CPU (including IXP455) only */
 #define IXP4XX_FEATURE_NPEB_ETH_1_TO_3  (1 << 20)
 #define IXP4XX_FEATURE_RSA              (1 << 21)
-#define IXP4XX_FEATURE_XSCALE_MAX_FREQ  (3 << 22)
-#define IXP4XX_FEATURE_RESERVED         (0xFF << 24)
-
-#define IXP4XX_FEATURE_IXP46X_ONLY (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 IXP46X_FEATURE_MASK             (IXP43X_FEATURE_MASK             | \
+                                         IXP4XX_FEATURE_NPEB_ETH_1_TO_3  | \
+                                         IXP4XX_FEATURE_RSA)
 
 #endif
diff --git a/arch/arm/mach-ixp4xx/ixp4xx_npe.c b/arch/arm/mach-ixp4xx/ixp4xx_npe.c
index c73a94d0ca2..25231023490 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, "IXP43x/IXP46x 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 5fce1d5c1a1..9cc43476bfa 100644
--- a/drivers/net/arm/ixp4xx_eth.c
+++ b/drivers/net/arm/ixp4xx_eth.c
@@ -335,11 +335,20 @@ static int ixp4xx_mdio_register(void)
         if (!(mdio_bus = mdiobus_alloc()))
                 return -ENOMEM;
 
-        /* All MII PHY accesses use NPE-B Ethernet registers */
-        spin_lock_init(&mdio_lock);
-        mdio_regs = (struct eth_regs __iomem *)IXP4XX_EthB_BASE_VIRT;
-        __raw_writel(DEFAULT_CORE_CNTRL, &mdio_regs->core_control);
+        if (cpu_is_ixp43x()) {
+                /* IXP43x lacks NPE-B and uses NPE-C for MII PHY access */
+                if (!(ixp4xx_read_feature_bits() & IXP4XX_FEATURE_NPEC_ETH))
+                        return -ENOSYS;
+                mdio_regs = (struct eth_regs __iomem *)IXP4XX_EthC_BASE_VIRT;
+        } else {
+                /* All MII PHY accesses use NPE-B Ethernet registers */
+                if (!(ixp4xx_read_feature_bits() & IXP4XX_FEATURE_NPEB_ETH0))
+                        return -ENOSYS;
+                mdio_regs = (struct eth_regs __iomem *)IXP4XX_EthB_BASE_VIRT;
+        }
 
+        __raw_writel(DEFAULT_CORE_CNTRL, &mdio_regs->core_control);
+        spin_lock_init(&mdio_lock);
         mdio_bus->name = "IXP4xx MII Bus";
         mdio_bus->read = &ixp4xx_mdio_read;
         mdio_bus->write = &ixp4xx_mdio_write;
@@ -1250,9 +1259,6 @@ static struct platform_driver ixp4xx_eth_driver = {
 static int __init eth_init_module(void)
 {
         int err;
-        if (!(ixp4xx_read_feature_bits() & IXP4XX_FEATURE_NPEB_ETH0))
-                return -ENOSYS;
-
         if ((err = ixp4xx_mdio_register()))
                 return err;
         return platform_driver_register(&ixp4xx_eth_driver);