target/linux/ixp4xx/patches-2.6.27/204-npe_driver_ixp43x_support.patch

   1 From cba5c286f3ea34ea4767fc00c705434a00fe2c37 Mon Sep 17 00:00:00 2001
   2 From: Imre Kaloz <kaloz@openwrt.org>
   3 Date: Thu, 26 Jun 2008 01:58:02 +0200
   4 Subject: [PATCH] Add support for the ethernet ports on IXP43x
   5
   6 ---
   7  arch/arm/mach-ixp4xx/ixp4xx_npe.c         |    6 +++---
   8  drivers/net/arm/ixp4xx_eth.c              |   13 +++++++++----
   9  include/asm-arm/arch-ixp4xx/cpu.h         |    2 ++
  10  include/asm-arm/arch-ixp4xx/ixp4xx-regs.h |    7 ++++---
  11  4 files changed, 18 insertions(+), 10 deletions(-)
  12
  13 --- a/arch/arm/mach-ixp4xx/ixp4xx_npe.c
  14 +++ b/arch/arm/mach-ixp4xx/ixp4xx_npe.c
  15 @@ -575,8 +575,8 @@ int npe_load_firmware(struct npe *npe, c
  16                 for (i = 0; i < image->size; i++)
  17                         image->data[i] = swab32(image->data[i]);
  18
  19 -       if (!cpu_is_ixp46x() && ((image->id >> 28) & 0xF /* device ID */)) {
  20 -               print_npe(KERN_INFO, npe, "IXP46x firmware ignored on "
  21 +       if (cpu_is_ixp42x() && ((image->id >> 28) & 0xF /* device ID */)) {
  22 +               print_npe(KERN_INFO, npe, "IXP46x/IXP43x firmware ignored on "
  23                           "IXP42x\n");
  24                 goto err;
  25         }
  26 @@ -598,7 +598,7 @@ int npe_load_firmware(struct npe *npe, c
  27                   "revision 0x%X:%X\n", (image->id >> 16) & 0xFF,
  28                   (image->id >> 8) & 0xFF, image->id & 0xFF);
  29
  30 -       if (!cpu_is_ixp46x()) {
  31 +       if (cpu_is_ixp42x()) {
  32                 if (!npe->id)
  33                         instr_size = NPE_A_42X_INSTR_SIZE;
  34                 else
  35 --- a/drivers/net/arm/ixp4xx_eth.c
  36 +++ b/drivers/net/arm/ixp4xx_eth.c
  37 @@ -32,6 +32,7 @@
  38  #include <linux/kernel.h>
  39  #include <linux/mii.h>
  40  #include <linux/platform_device.h>
  41 +#include <mach/cpu.h>
  42  #include <mach/npe.h>
  43  #include <mach/qmgr.h>
  44
  45 @@ -1337,12 +1338,16 @@ static struct platform_driver drv = {
  46
  47  static int __init eth_init_module(void)
  48  {
  49 -       if (!(ixp4xx_read_feature_bits() & IXP4XX_FEATURE_NPEB_ETH0))
  50 -               return -ENOSYS;
  51
  52 -       /* All MII PHY accesses use NPE-B Ethernet registers */
  53         spin_lock_init(&mdio_lock);
  54 -       mdio_regs = (struct eth_regs __iomem *)IXP4XX_EthB_BASE_VIRT;
  55 +       if (!cpu_is_ixp43x())
  56 +       /* All MII PHY accesses use NPE-B Ethernet registers */
  57 +               mdio_regs = (struct eth_regs __iomem *)IXP4XX_EthB_BASE_VIRT;
  58 +
  59 +       else
  60 +       /* IXP43x lacks NPE-B and uses NPE-C for MII PHY access */
  61 +               mdio_regs = (struct eth_regs __iomem *)IXP4XX_EthC_BASE_VIRT;
  62 +
  63         __raw_writel(DEFAULT_CORE_CNTRL, &mdio_regs->core_control);
  64
  65         return platform_driver_register(&drv);
  66 --- a/arch/arm/mach-ixp4xx/include/mach/cpu.h
  67 +++ b/arch/arm/mach-ixp4xx/include/mach/cpu.h
  68 @@ -34,6 +34,8 @@ static inline u32 ixp4xx_read_feature_bi
  69         val &= ~IXP4XX_FEATURE_RESERVED;
  70         if (!cpu_is_ixp46x())
  71                 val &= ~IXP4XX_FEATURE_IXP46X_ONLY;
  72 +       if (cpu_is_ixp42x())
  73 +               val &= ~IXP4XX_FEATURE_IXP43X_46X;
  74
  75         return val;
  76  }
  77 --- a/arch/arm/mach-ixp4xx/include/mach/ixp4xx-regs.h
  78 +++ b/arch/arm/mach-ixp4xx/include/mach/ixp4xx-regs.h
  79 @@ -628,11 +628,12 @@
  80  #define IXP4XX_FEATURE_XSCALE_MAX_FREQ (3 << 22)
  81  #define IXP4XX_FEATURE_RESERVED                (0xFF << 24)
  82
  83 -#define IXP4XX_FEATURE_IXP46X_ONLY (IXP4XX_FEATURE_ECC_TIMESYNC |      \
  84 +#define IXP4XX_FEATURE_IXP43X_46X (IXP4XX_FEATURE_ECC_TIMESYNC |       \
  85                                     IXP4XX_FEATURE_USB_HOST |           \
  86                                     IXP4XX_FEATURE_NPEA_ETH |           \
  87 -                                   IXP4XX_FEATURE_NPEB_ETH_1_TO_3 |    \
  88 -                                   IXP4XX_FEATURE_RSA |                \
  89                                     IXP4XX_FEATURE_XSCALE_MAX_FREQ)
  90
  91 +#define IXP4XX_FEATURE_IXP46X_ONLY (IXP4XX_FEATURE_NPEB_ETH_1_TO_3 |   \
  92 +                                   IXP4XX_FEATURE_RSA)
  93 +
  94  #endif