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authorJeff Kirsher <jeffrey.t.kirsher@intel.com>2011-06-16 15:02:54 -0700
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2011-08-12 12:37:35 -0700
commit7443713a31f284365454493a9adbaea02bcc4344 (patch)
tree58e4ec1abf2b85a3cb54efe71350ca4f193c2eac /drivers/net/ethernet
parentxilinx/ll_temac: Move the Xilinx drivers (diff)
downloadlinux-dev-7443713a31f284365454493a9adbaea02bcc4344.tar.xz
linux-dev-7443713a31f284365454493a9adbaea02bcc4344.zip
ipg: Move the IC Plus driver
Move the IC Plus driver into drivers/net/ethernet/icplus/ and make the necessary Kconfig and Makefile changes. CC: <craig_rich@sundanceti.com> CC: <sorbica@icplus.com.tw> CC: <jesse@icplus.com.tw> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/net/ethernet')
-rw-r--r--drivers/net/ethernet/Kconfig1
-rw-r--r--drivers/net/ethernet/Makefile1
-rw-r--r--drivers/net/ethernet/icplus/Kconfig13
-rw-r--r--drivers/net/ethernet/icplus/Makefile5
-rw-r--r--drivers/net/ethernet/icplus/ipg.c2324
-rw-r--r--drivers/net/ethernet/icplus/ipg.h749
6 files changed, 3093 insertions, 0 deletions
diff --git a/drivers/net/ethernet/Kconfig b/drivers/net/ethernet/Kconfig
index 922f4d1243a6..72d0f5ef23c7 100644
--- a/drivers/net/ethernet/Kconfig
+++ b/drivers/net/ethernet/Kconfig
@@ -31,6 +31,7 @@ source "drivers/net/ethernet/ibm/Kconfig"
source "drivers/net/ethernet/intel/Kconfig"
source "drivers/net/ethernet/i825xx/Kconfig"
source "drivers/net/ethernet/xscale/Kconfig"
+source "drivers/net/ethernet/icplus/Kconfig"
config JME
tristate "JMicron(R) PCI-Express Gigabit Ethernet support"
diff --git a/drivers/net/ethernet/Makefile b/drivers/net/ethernet/Makefile
index fcecd5f474b4..a8d8913b3055 100644
--- a/drivers/net/ethernet/Makefile
+++ b/drivers/net/ethernet/Makefile
@@ -23,6 +23,7 @@ obj-$(CONFIG_NET_VENDOR_IBM) += ibm/
obj-$(CONFIG_NET_VENDOR_INTEL) += intel/
obj-$(CONFIG_NET_VENDOR_I825XX) += i825xx/
obj-$(CONFIG_NET_VENDOR_XSCALE) += xscale/
+obj-$(CONFIG_IP1000) += icplus/
obj-$(CONFIG_JME) += jme.o
obj-$(CONFIG_NET_VENDOR_MARVELL) += marvell/
obj-$(CONFIG_NET_VENDOR_MELLANOX) += mellanox/
diff --git a/drivers/net/ethernet/icplus/Kconfig b/drivers/net/ethernet/icplus/Kconfig
new file mode 100644
index 000000000000..e88822276269
--- /dev/null
+++ b/drivers/net/ethernet/icplus/Kconfig
@@ -0,0 +1,13 @@
+#
+# IC Plus device configuration
+#
+
+config IP1000
+ tristate "IP1000 Gigabit Ethernet support"
+ depends on PCI && EXPERIMENTAL
+ select MII
+ ---help---
+ This driver supports IP1000 gigabit Ethernet cards.
+
+ To compile this driver as a module, choose M here: the module
+ will be called ipg. This is recommended.
diff --git a/drivers/net/ethernet/icplus/Makefile b/drivers/net/ethernet/icplus/Makefile
new file mode 100644
index 000000000000..5bc87c1f36aa
--- /dev/null
+++ b/drivers/net/ethernet/icplus/Makefile
@@ -0,0 +1,5 @@
+#
+# Makefile for the IC Plus device drivers
+#
+
+obj-$(CONFIG_IP1000) += ipg.o
diff --git a/drivers/net/ethernet/icplus/ipg.c b/drivers/net/ethernet/icplus/ipg.c
new file mode 100644
index 000000000000..b470281158e9
--- /dev/null
+++ b/drivers/net/ethernet/icplus/ipg.c
@@ -0,0 +1,2324 @@
+/*
+ * ipg.c: Device Driver for the IP1000 Gigabit Ethernet Adapter
+ *
+ * Copyright (C) 2003, 2007 IC Plus Corp
+ *
+ * Original Author:
+ *
+ * Craig Rich
+ * Sundance Technology, Inc.
+ * www.sundanceti.com
+ * craig_rich@sundanceti.com
+ *
+ * Current Maintainer:
+ *
+ * Sorbica Shieh.
+ * http://www.icplus.com.tw
+ * sorbica@icplus.com.tw
+ *
+ * Jesse Huang
+ * http://www.icplus.com.tw
+ * jesse@icplus.com.tw
+ */
+
+#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
+
+#include <linux/crc32.h>
+#include <linux/ethtool.h>
+#include <linux/interrupt.h>
+#include <linux/gfp.h>
+#include <linux/mii.h>
+#include <linux/mutex.h>
+
+#include <asm/div64.h>
+
+#define IPG_RX_RING_BYTES (sizeof(struct ipg_rx) * IPG_RFDLIST_LENGTH)
+#define IPG_TX_RING_BYTES (sizeof(struct ipg_tx) * IPG_TFDLIST_LENGTH)
+#define IPG_RESET_MASK \
+ (IPG_AC_GLOBAL_RESET | IPG_AC_RX_RESET | IPG_AC_TX_RESET | \
+ IPG_AC_DMA | IPG_AC_FIFO | IPG_AC_NETWORK | IPG_AC_HOST | \
+ IPG_AC_AUTO_INIT)
+
+#define ipg_w32(val32, reg) iowrite32((val32), ioaddr + (reg))
+#define ipg_w16(val16, reg) iowrite16((val16), ioaddr + (reg))
+#define ipg_w8(val8, reg) iowrite8((val8), ioaddr + (reg))
+
+#define ipg_r32(reg) ioread32(ioaddr + (reg))
+#define ipg_r16(reg) ioread16(ioaddr + (reg))
+#define ipg_r8(reg) ioread8(ioaddr + (reg))
+
+enum {
+ netdev_io_size = 128
+};
+
+#include "ipg.h"
+#define DRV_NAME "ipg"
+
+MODULE_AUTHOR("IC Plus Corp. 2003");
+MODULE_DESCRIPTION("IC Plus IP1000 Gigabit Ethernet Adapter Linux Driver");
+MODULE_LICENSE("GPL");
+
+/*
+ * Defaults
+ */
+#define IPG_MAX_RXFRAME_SIZE 0x0600
+#define IPG_RXFRAG_SIZE 0x0600
+#define IPG_RXSUPPORT_SIZE 0x0600
+#define IPG_IS_JUMBO false
+
+/*
+ * Variable record -- index by leading revision/length
+ * Revision/Length(=N*4), Address1, Data1, Address2, Data2,...,AddressN,DataN
+ */
+static const unsigned short DefaultPhyParam[] = {
+ /* 11/12/03 IP1000A v1-3 rev=0x40 */
+ /*--------------------------------------------------------------------------
+ (0x4000|(15*4)), 31, 0x0001, 27, 0x01e0, 31, 0x0002, 22, 0x85bd, 24, 0xfff2,
+ 27, 0x0c10, 28, 0x0c10, 29, 0x2c10, 31, 0x0003, 23, 0x92f6,
+ 31, 0x0000, 23, 0x003d, 30, 0x00de, 20, 0x20e7, 9, 0x0700,
+ --------------------------------------------------------------------------*/
+ /* 12/17/03 IP1000A v1-4 rev=0x40 */
+ (0x4000 | (07 * 4)), 31, 0x0001, 27, 0x01e0, 31, 0x0002, 27, 0xeb8e, 31,
+ 0x0000,
+ 30, 0x005e, 9, 0x0700,
+ /* 01/09/04 IP1000A v1-5 rev=0x41 */
+ (0x4100 | (07 * 4)), 31, 0x0001, 27, 0x01e0, 31, 0x0002, 27, 0xeb8e, 31,
+ 0x0000,
+ 30, 0x005e, 9, 0x0700,
+ 0x0000
+};
+
+static const char * const ipg_brand_name[] = {
+ "IC PLUS IP1000 1000/100/10 based NIC",
+ "Sundance Technology ST2021 based NIC",
+ "Tamarack Microelectronics TC9020/9021 based NIC",
+ "D-Link NIC IP1000A"
+};
+
+static DEFINE_PCI_DEVICE_TABLE(ipg_pci_tbl) = {
+ { PCI_VDEVICE(SUNDANCE, 0x1023), 0 },
+ { PCI_VDEVICE(SUNDANCE, 0x2021), 1 },
+ { PCI_VDEVICE(DLINK, 0x9021), 2 },
+ { PCI_VDEVICE(DLINK, 0x4020), 3 },
+ { 0, }
+};
+
+MODULE_DEVICE_TABLE(pci, ipg_pci_tbl);
+
+static inline void __iomem *ipg_ioaddr(struct net_device *dev)
+{
+ struct ipg_nic_private *sp = netdev_priv(dev);
+ return sp->ioaddr;
+}
+
+#ifdef IPG_DEBUG
+static void ipg_dump_rfdlist(struct net_device *dev)
+{
+ struct ipg_nic_private *sp = netdev_priv(dev);
+ void __iomem *ioaddr = sp->ioaddr;
+ unsigned int i;
+ u32 offset;
+
+ IPG_DEBUG_MSG("_dump_rfdlist\n");
+
+ netdev_info(dev, "rx_current = %02x\n", sp->rx_current);
+ netdev_info(dev, "rx_dirty = %02x\n", sp->rx_dirty);
+ netdev_info(dev, "RFDList start address = %016lx\n",
+ (unsigned long)sp->rxd_map);
+ netdev_info(dev, "RFDListPtr register = %08x%08x\n",
+ ipg_r32(IPG_RFDLISTPTR1), ipg_r32(IPG_RFDLISTPTR0));
+
+ for (i = 0; i < IPG_RFDLIST_LENGTH; i++) {
+ offset = (u32) &sp->rxd[i].next_desc - (u32) sp->rxd;
+ netdev_info(dev, "%02x %04x RFDNextPtr = %016lx\n",
+ i, offset, (unsigned long)sp->rxd[i].next_desc);
+ offset = (u32) &sp->rxd[i].rfs - (u32) sp->rxd;
+ netdev_info(dev, "%02x %04x RFS = %016lx\n",
+ i, offset, (unsigned long)sp->rxd[i].rfs);
+ offset = (u32) &sp->rxd[i].frag_info - (u32) sp->rxd;
+ netdev_info(dev, "%02x %04x frag_info = %016lx\n",
+ i, offset, (unsigned long)sp->rxd[i].frag_info);
+ }
+}
+
+static void ipg_dump_tfdlist(struct net_device *dev)
+{
+ struct ipg_nic_private *sp = netdev_priv(dev);
+ void __iomem *ioaddr = sp->ioaddr;
+ unsigned int i;
+ u32 offset;
+
+ IPG_DEBUG_MSG("_dump_tfdlist\n");
+
+ netdev_info(dev, "tx_current = %02x\n", sp->tx_current);
+ netdev_info(dev, "tx_dirty = %02x\n", sp->tx_dirty);
+ netdev_info(dev, "TFDList start address = %016lx\n",
+ (unsigned long) sp->txd_map);
+ netdev_info(dev, "TFDListPtr register = %08x%08x\n",
+ ipg_r32(IPG_TFDLISTPTR1), ipg_r32(IPG_TFDLISTPTR0));
+
+ for (i = 0; i < IPG_TFDLIST_LENGTH; i++) {
+ offset = (u32) &sp->txd[i].next_desc - (u32) sp->txd;
+ netdev_info(dev, "%02x %04x TFDNextPtr = %016lx\n",
+ i, offset, (unsigned long)sp->txd[i].next_desc);
+
+ offset = (u32) &sp->txd[i].tfc - (u32) sp->txd;
+ netdev_info(dev, "%02x %04x TFC = %016lx\n",
+ i, offset, (unsigned long) sp->txd[i].tfc);
+ offset = (u32) &sp->txd[i].frag_info - (u32) sp->txd;
+ netdev_info(dev, "%02x %04x frag_info = %016lx\n",
+ i, offset, (unsigned long) sp->txd[i].frag_info);
+ }
+}
+#endif
+
+static void ipg_write_phy_ctl(void __iomem *ioaddr, u8 data)
+{
+ ipg_w8(IPG_PC_RSVD_MASK & data, PHY_CTRL);
+ ndelay(IPG_PC_PHYCTRLWAIT_NS);
+}
+
+static void ipg_drive_phy_ctl_low_high(void __iomem *ioaddr, u8 data)
+{
+ ipg_write_phy_ctl(ioaddr, IPG_PC_MGMTCLK_LO | data);
+ ipg_write_phy_ctl(ioaddr, IPG_PC_MGMTCLK_HI | data);
+}
+
+static void send_three_state(void __iomem *ioaddr, u8 phyctrlpolarity)
+{
+ phyctrlpolarity |= (IPG_PC_MGMTDATA & 0) | IPG_PC_MGMTDIR;
+
+ ipg_drive_phy_ctl_low_high(ioaddr, phyctrlpolarity);
+}
+
+static void send_end(void __iomem *ioaddr, u8 phyctrlpolarity)
+{
+ ipg_w8((IPG_PC_MGMTCLK_LO | (IPG_PC_MGMTDATA & 0) | IPG_PC_MGMTDIR |
+ phyctrlpolarity) & IPG_PC_RSVD_MASK, PHY_CTRL);
+}
+
+static u16 read_phy_bit(void __iomem *ioaddr, u8 phyctrlpolarity)
+{
+ u16 bit_data;
+
+ ipg_write_phy_ctl(ioaddr, IPG_PC_MGMTCLK_LO | phyctrlpolarity);
+
+ bit_data = ((ipg_r8(PHY_CTRL) & IPG_PC_MGMTDATA) >> 1) & 1;
+
+ ipg_write_phy_ctl(ioaddr, IPG_PC_MGMTCLK_HI | phyctrlpolarity);
+
+ return bit_data;
+}
+
+/*
+ * Read a register from the Physical Layer device located
+ * on the IPG NIC, using the IPG PHYCTRL register.
+ */
+static int mdio_read(struct net_device *dev, int phy_id, int phy_reg)
+{
+ void __iomem *ioaddr = ipg_ioaddr(dev);
+ /*
+ * The GMII mangement frame structure for a read is as follows:
+ *
+ * |Preamble|st|op|phyad|regad|ta| data |idle|
+ * |< 32 1s>|01|10|AAAAA|RRRRR|z0|DDDDDDDDDDDDDDDD|z |
+ *
+ * <32 1s> = 32 consecutive logic 1 values
+ * A = bit of Physical Layer device address (MSB first)
+ * R = bit of register address (MSB first)
+ * z = High impedance state
+ * D = bit of read data (MSB first)
+ *
+ * Transmission order is 'Preamble' field first, bits transmitted
+ * left to right (first to last).
+ */
+ struct {
+ u32 field;
+ unsigned int len;
+ } p[] = {
+ { GMII_PREAMBLE, 32 }, /* Preamble */
+ { GMII_ST, 2 }, /* ST */
+ { GMII_READ, 2 }, /* OP */
+ { phy_id, 5 }, /* PHYAD */
+ { phy_reg, 5 }, /* REGAD */
+ { 0x0000, 2 }, /* TA */
+ { 0x0000, 16 }, /* DATA */
+ { 0x0000, 1 } /* IDLE */
+ };
+ unsigned int i, j;
+ u8 polarity, data;
+
+ polarity = ipg_r8(PHY_CTRL);
+ polarity &= (IPG_PC_DUPLEX_POLARITY | IPG_PC_LINK_POLARITY);
+
+ /* Create the Preamble, ST, OP, PHYAD, and REGAD field. */
+ for (j = 0; j < 5; j++) {
+ for (i = 0; i < p[j].len; i++) {
+ /* For each variable length field, the MSB must be
+ * transmitted first. Rotate through the field bits,
+ * starting with the MSB, and move each bit into the
+ * the 1st (2^1) bit position (this is the bit position
+ * corresponding to the MgmtData bit of the PhyCtrl
+ * register for the IPG).
+ *
+ * Example: ST = 01;
+ *
+ * First write a '0' to bit 1 of the PhyCtrl
+ * register, then write a '1' to bit 1 of the
+ * PhyCtrl register.
+ *
+ * To do this, right shift the MSB of ST by the value:
+ * [field length - 1 - #ST bits already written]
+ * then left shift this result by 1.
+ */
+ data = (p[j].field >> (p[j].len - 1 - i)) << 1;
+ data &= IPG_PC_MGMTDATA;
+ data |= polarity | IPG_PC_MGMTDIR;
+
+ ipg_drive_phy_ctl_low_high(ioaddr, data);
+ }
+ }
+
+ send_three_state(ioaddr, polarity);
+
+ read_phy_bit(ioaddr, polarity);
+
+ /*
+ * For a read cycle, the bits for the next two fields (TA and
+ * DATA) are driven by the PHY (the IPG reads these bits).
+ */
+ for (i = 0; i < p[6].len; i++) {
+ p[6].field |=
+ (read_phy_bit(ioaddr, polarity) << (p[6].len - 1 - i));
+ }
+
+ send_three_state(ioaddr, polarity);
+ send_three_state(ioaddr, polarity);
+ send_three_state(ioaddr, polarity);
+ send_end(ioaddr, polarity);
+
+ /* Return the value of the DATA field. */
+ return p[6].field;
+}
+
+/*
+ * Write to a register from the Physical Layer device located
+ * on the IPG NIC, using the IPG PHYCTRL register.
+ */
+static void mdio_write(struct net_device *dev, int phy_id, int phy_reg, int val)
+{
+ void __iomem *ioaddr = ipg_ioaddr(dev);
+ /*
+ * The GMII mangement frame structure for a read is as follows:
+ *
+ * |Preamble|st|op|phyad|regad|ta| data |idle|
+ * |< 32 1s>|01|10|AAAAA|RRRRR|z0|DDDDDDDDDDDDDDDD|z |
+ *
+ * <32 1s> = 32 consecutive logic 1 values
+ * A = bit of Physical Layer device address (MSB first)
+ * R = bit of register address (MSB first)
+ * z = High impedance state
+ * D = bit of write data (MSB first)
+ *
+ * Transmission order is 'Preamble' field first, bits transmitted
+ * left to right (first to last).
+ */
+ struct {
+ u32 field;
+ unsigned int len;
+ } p[] = {
+ { GMII_PREAMBLE, 32 }, /* Preamble */
+ { GMII_ST, 2 }, /* ST */
+ { GMII_WRITE, 2 }, /* OP */
+ { phy_id, 5 }, /* PHYAD */
+ { phy_reg, 5 }, /* REGAD */
+ { 0x0002, 2 }, /* TA */
+ { val & 0xffff, 16 }, /* DATA */
+ { 0x0000, 1 } /* IDLE */
+ };
+ unsigned int i, j;
+ u8 polarity, data;
+
+ polarity = ipg_r8(PHY_CTRL);
+ polarity &= (IPG_PC_DUPLEX_POLARITY | IPG_PC_LINK_POLARITY);
+
+ /* Create the Preamble, ST, OP, PHYAD, and REGAD field. */
+ for (j = 0; j < 7; j++) {
+ for (i = 0; i < p[j].len; i++) {
+ /* For each variable length field, the MSB must be
+ * transmitted first. Rotate through the field bits,
+ * starting with the MSB, and move each bit into the
+ * the 1st (2^1) bit position (this is the bit position
+ * corresponding to the MgmtData bit of the PhyCtrl
+ * register for the IPG).
+ *
+ * Example: ST = 01;
+ *
+ * First write a '0' to bit 1 of the PhyCtrl
+ * register, then write a '1' to bit 1 of the
+ * PhyCtrl register.
+ *
+ * To do this, right shift the MSB of ST by the value:
+ * [field length - 1 - #ST bits already written]
+ * then left shift this result by 1.
+ */
+ data = (p[j].field >> (p[j].len - 1 - i)) << 1;
+ data &= IPG_PC_MGMTDATA;
+ data |= polarity | IPG_PC_MGMTDIR;
+
+ ipg_drive_phy_ctl_low_high(ioaddr, data);
+ }
+ }
+
+ /* The last cycle is a tri-state, so read from the PHY. */
+ for (j = 7; j < 8; j++) {
+ for (i = 0; i < p[j].len; i++) {
+ ipg_write_phy_ctl(ioaddr, IPG_PC_MGMTCLK_LO | polarity);
+
+ p[j].field |= ((ipg_r8(PHY_CTRL) &
+ IPG_PC_MGMTDATA) >> 1) << (p[j].len - 1 - i);
+
+ ipg_write_phy_ctl(ioaddr, IPG_PC_MGMTCLK_HI | polarity);
+ }
+ }
+}
+
+static void ipg_set_led_mode(struct net_device *dev)
+{
+ struct ipg_nic_private *sp = netdev_priv(dev);
+ void __iomem *ioaddr = sp->ioaddr;
+ u32 mode;
+
+ mode = ipg_r32(ASIC_CTRL);
+ mode &= ~(IPG_AC_LED_MODE_BIT_1 | IPG_AC_LED_MODE | IPG_AC_LED_SPEED);
+
+ if ((sp->led_mode & 0x03) > 1)
+ mode |= IPG_AC_LED_MODE_BIT_1; /* Write Asic Control Bit 29 */
+
+ if ((sp->led_mode & 0x01) == 1)
+ mode |= IPG_AC_LED_MODE; /* Write Asic Control Bit 14 */
+
+ if ((sp->led_mode & 0x08) == 8)
+ mode |= IPG_AC_LED_SPEED; /* Write Asic Control Bit 27 */
+
+ ipg_w32(mode, ASIC_CTRL);
+}
+
+static void ipg_set_phy_set(struct net_device *dev)
+{
+ struct ipg_nic_private *sp = netdev_priv(dev);
+ void __iomem *ioaddr = sp->ioaddr;
+ int physet;
+
+ physet = ipg_r8(PHY_SET);
+ physet &= ~(IPG_PS_MEM_LENB9B | IPG_PS_MEM_LEN9 | IPG_PS_NON_COMPDET);
+ physet |= ((sp->led_mode & 0x70) >> 4);
+ ipg_w8(physet, PHY_SET);
+}
+
+static int ipg_reset(struct net_device *dev, u32 resetflags)
+{
+ /* Assert functional resets via the IPG AsicCtrl
+ * register as specified by the 'resetflags' input
+ * parameter.
+ */
+ void __iomem *ioaddr = ipg_ioaddr(dev);
+ unsigned int timeout_count = 0;
+
+ IPG_DEBUG_MSG("_reset\n");
+
+ ipg_w32(ipg_r32(ASIC_CTRL) | resetflags, ASIC_CTRL);
+
+ /* Delay added to account for problem with 10Mbps reset. */
+ mdelay(IPG_AC_RESETWAIT);
+
+ while (IPG_AC_RESET_BUSY & ipg_r32(ASIC_CTRL)) {
+ mdelay(IPG_AC_RESETWAIT);
+ if (++timeout_count > IPG_AC_RESET_TIMEOUT)
+ return -ETIME;
+ }
+ /* Set LED Mode in Asic Control */
+ ipg_set_led_mode(dev);
+
+ /* Set PHYSet Register Value */
+ ipg_set_phy_set(dev);
+ return 0;
+}
+
+/* Find the GMII PHY address. */
+static int ipg_find_phyaddr(struct net_device *dev)
+{
+ unsigned int phyaddr, i;
+
+ for (i = 0; i < 32; i++) {
+ u32 status;
+
+ /* Search for the correct PHY address among 32 possible. */
+ phyaddr = (IPG_NIC_PHY_ADDRESS + i) % 32;
+
+ /* 10/22/03 Grace change verify from GMII_PHY_STATUS to
+ GMII_PHY_ID1
+ */
+
+ status = mdio_read(dev, phyaddr, MII_BMSR);
+
+ if ((status != 0xFFFF) && (status != 0))
+ return phyaddr;
+ }
+
+ return 0x1f;
+}
+
+/*
+ * Configure IPG based on result of IEEE 802.3 PHY
+ * auto-negotiation.
+ */
+static int ipg_config_autoneg(struct net_device *dev)
+{
+ struct ipg_nic_private *sp = netdev_priv(dev);
+ void __iomem *ioaddr = sp->ioaddr;
+ unsigned int txflowcontrol;
+ unsigned int rxflowcontrol;
+ unsigned int fullduplex;
+ u32 mac_ctrl_val;
+ u32 asicctrl;
+ u8 phyctrl;
+ const char *speed;
+ const char *duplex;
+ const char *tx_desc;
+ const char *rx_desc;
+
+ IPG_DEBUG_MSG("_config_autoneg\n");
+
+ asicctrl = ipg_r32(ASIC_CTRL);
+ phyctrl = ipg_r8(PHY_CTRL);
+ mac_ctrl_val = ipg_r32(MAC_CTRL);
+
+ /* Set flags for use in resolving auto-negotiation, assuming
+ * non-1000Mbps, half duplex, no flow control.
+ */
+ fullduplex = 0;
+ txflowcontrol = 0;
+ rxflowcontrol = 0;
+
+ /* To accommodate a problem in 10Mbps operation,
+ * set a global flag if PHY running in 10Mbps mode.
+ */
+ sp->tenmbpsmode = 0;
+
+ /* Determine actual speed of operation. */
+ switch (phyctrl & IPG_PC_LINK_SPEED) {
+ case IPG_PC_LINK_SPEED_10MBPS:
+ speed = "10Mbps";
+ sp->tenmbpsmode = 1;
+ break;
+ case IPG_PC_LINK_SPEED_100MBPS:
+ speed = "100Mbps";
+ break;
+ case IPG_PC_LINK_SPEED_1000MBPS:
+ speed = "1000Mbps";
+ break;
+ default:
+ speed = "undefined!";
+ return 0;
+ }
+
+ netdev_info(dev, "Link speed = %s\n", speed);
+ if (sp->tenmbpsmode == 1)
+ netdev_info(dev, "10Mbps operational mode enabled\n");
+
+ if (phyctrl & IPG_PC_DUPLEX_STATUS) {
+ fullduplex = 1;
+ txflowcontrol = 1;
+ rxflowcontrol = 1;
+ }
+
+ /* Configure full duplex, and flow control. */
+ if (fullduplex == 1) {
+
+ /* Configure IPG for full duplex operation. */
+
+ duplex = "full";
+
+ mac_ctrl_val |= IPG_MC_DUPLEX_SELECT_FD;
+
+ if (txflowcontrol == 1) {
+ tx_desc = "";
+ mac_ctrl_val |= IPG_MC_TX_FLOW_CONTROL_ENABLE;
+ } else {
+ tx_desc = "no ";
+ mac_ctrl_val &= ~IPG_MC_TX_FLOW_CONTROL_ENABLE;
+ }
+
+ if (rxflowcontrol == 1) {
+ rx_desc = "";
+ mac_ctrl_val |= IPG_MC_RX_FLOW_CONTROL_ENABLE;
+ } else {
+ rx_desc = "no ";
+ mac_ctrl_val &= ~IPG_MC_RX_FLOW_CONTROL_ENABLE;
+ }
+ } else {
+ duplex = "half";
+ tx_desc = "no ";
+ rx_desc = "no ";
+ mac_ctrl_val &= (~IPG_MC_DUPLEX_SELECT_FD &
+ ~IPG_MC_TX_FLOW_CONTROL_ENABLE &
+ ~IPG_MC_RX_FLOW_CONTROL_ENABLE);
+ }
+
+ netdev_info(dev, "setting %s duplex, %sTX, %sRX flow control\n",
+ duplex, tx_desc, rx_desc);
+ ipg_w32(mac_ctrl_val, MAC_CTRL);
+
+ return 0;
+}
+
+/* Determine and configure multicast operation and set
+ * receive mode for IPG.
+ */
+static void ipg_nic_set_multicast_list(struct net_device *dev)
+{
+ void __iomem *ioaddr = ipg_ioaddr(dev);
+ struct netdev_hw_addr *ha;
+ unsigned int hashindex;
+ u32 hashtable[2];
+ u8 receivemode;
+
+ IPG_DEBUG_MSG("_nic_set_multicast_list\n");
+
+ receivemode = IPG_RM_RECEIVEUNICAST | IPG_RM_RECEIVEBROADCAST;
+
+ if (dev->flags & IFF_PROMISC) {
+ /* NIC to be configured in promiscuous mode. */
+ receivemode = IPG_RM_RECEIVEALLFRAMES;
+ } else if ((dev->flags & IFF_ALLMULTI) ||
+ ((dev->flags & IFF_MULTICAST) &&
+ (netdev_mc_count(dev) > IPG_MULTICAST_HASHTABLE_SIZE))) {
+ /* NIC to be configured to receive all multicast
+ * frames. */
+ receivemode |= IPG_RM_RECEIVEMULTICAST;
+ } else if ((dev->flags & IFF_MULTICAST) && !netdev_mc_empty(dev)) {
+ /* NIC to be configured to receive selected
+ * multicast addresses. */
+ receivemode |= IPG_RM_RECEIVEMULTICASTHASH;
+ }
+
+ /* Calculate the bits to set for the 64 bit, IPG HASHTABLE.
+ * The IPG applies a cyclic-redundancy-check (the same CRC
+ * used to calculate the frame data FCS) to the destination
+ * address all incoming multicast frames whose destination
+ * address has the multicast bit set. The least significant
+ * 6 bits of the CRC result are used as an addressing index
+ * into the hash table. If the value of the bit addressed by
+ * this index is a 1, the frame is passed to the host system.
+ */
+
+ /* Clear hashtable. */
+ hashtable[0] = 0x00000000;
+ hashtable[1] = 0x00000000;
+
+ /* Cycle through all multicast addresses to filter. */
+ netdev_for_each_mc_addr(ha, dev) {
+ /* Calculate CRC result for each multicast address. */
+ hashindex = crc32_le(0xffffffff, ha->addr,
+ ETH_ALEN);
+
+ /* Use only the least significant 6 bits. */
+ hashindex = hashindex & 0x3F;
+
+ /* Within "hashtable", set bit number "hashindex"
+ * to a logic 1.
+ */
+ set_bit(hashindex, (void *)hashtable);
+ }
+
+ /* Write the value of the hashtable, to the 4, 16 bit
+ * HASHTABLE IPG registers.
+ */
+ ipg_w32(hashtable[0], HASHTABLE_0);
+ ipg_w32(hashtable[1], HASHTABLE_1);
+
+ ipg_w8(IPG_RM_RSVD_MASK & receivemode, RECEIVE_MODE);
+
+ IPG_DEBUG_MSG("ReceiveMode = %x\n", ipg_r8(RECEIVE_MODE));
+}
+
+static int ipg_io_config(struct net_device *dev)
+{
+ struct ipg_nic_private *sp = netdev_priv(dev);
+ void __iomem *ioaddr = ipg_ioaddr(dev);
+ u32 origmacctrl;
+ u32 restoremacctrl;
+
+ IPG_DEBUG_MSG("_io_config\n");
+
+ origmacctrl = ipg_r32(MAC_CTRL);
+
+ restoremacctrl = origmacctrl | IPG_MC_STATISTICS_ENABLE;
+
+ /* Based on compilation option, determine if FCS is to be
+ * stripped on receive frames by IPG.
+ */
+ if (!IPG_STRIP_FCS_ON_RX)
+ restoremacctrl |= IPG_MC_RCV_FCS;
+
+ /* Determine if transmitter and/or receiver are
+ * enabled so we may restore MACCTRL correctly.
+ */
+ if (origmacctrl & IPG_MC_TX_ENABLED)
+ restoremacctrl |= IPG_MC_TX_ENABLE;
+
+ if (origmacctrl & IPG_MC_RX_ENABLED)
+ restoremacctrl |= IPG_MC_RX_ENABLE;
+
+ /* Transmitter and receiver must be disabled before setting
+ * IFSSelect.
+ */
+ ipg_w32((origmacctrl & (IPG_MC_RX_DISABLE | IPG_MC_TX_DISABLE)) &
+ IPG_MC_RSVD_MASK, MAC_CTRL);
+
+ /* Now that transmitter and receiver are disabled, write
+ * to IFSSelect.
+ */
+ ipg_w32((origmacctrl & IPG_MC_IFS_96BIT) & IPG_MC_RSVD_MASK, MAC_CTRL);
+
+ /* Set RECEIVEMODE register. */
+ ipg_nic_set_multicast_list(dev);
+
+ ipg_w16(sp->max_rxframe_size, MAX_FRAME_SIZE);
+
+ ipg_w8(IPG_RXDMAPOLLPERIOD_VALUE, RX_DMA_POLL_PERIOD);
+ ipg_w8(IPG_RXDMAURGENTTHRESH_VALUE, RX_DMA_URGENT_THRESH);
+ ipg_w8(IPG_RXDMABURSTTHRESH_VALUE, RX_DMA_BURST_THRESH);
+ ipg_w8(IPG_TXDMAPOLLPERIOD_VALUE, TX_DMA_POLL_PERIOD);
+ ipg_w8(IPG_TXDMAURGENTTHRESH_VALUE, TX_DMA_URGENT_THRESH);
+ ipg_w8(IPG_TXDMABURSTTHRESH_VALUE, TX_DMA_BURST_THRESH);
+ ipg_w16((IPG_IE_HOST_ERROR | IPG_IE_TX_DMA_COMPLETE |
+ IPG_IE_TX_COMPLETE | IPG_IE_INT_REQUESTED |
+ IPG_IE_UPDATE_STATS | IPG_IE_LINK_EVENT |
+ IPG_IE_RX_DMA_COMPLETE | IPG_IE_RX_DMA_PRIORITY), INT_ENABLE);
+ ipg_w16(IPG_FLOWONTHRESH_VALUE, FLOW_ON_THRESH);
+ ipg_w16(IPG_FLOWOFFTHRESH_VALUE, FLOW_OFF_THRESH);
+
+ /* IPG multi-frag frame bug workaround.
+ * Per silicon revision B3 eratta.
+ */
+ ipg_w16(ipg_r16(DEBUG_CTRL) | 0x0200, DEBUG_CTRL);
+
+ /* IPG TX poll now bug workaround.
+ * Per silicon revision B3 eratta.
+ */
+ ipg_w16(ipg_r16(DEBUG_CTRL) | 0x0010, DEBUG_CTRL);
+
+ /* IPG RX poll now bug workaround.
+ * Per silicon revision B3 eratta.
+ */
+ ipg_w16(ipg_r16(DEBUG_CTRL) | 0x0020, DEBUG_CTRL);
+
+ /* Now restore MACCTRL to original setting. */
+ ipg_w32(IPG_MC_RSVD_MASK & restoremacctrl, MAC_CTRL);
+
+ /* Disable unused RMON statistics. */
+ ipg_w32(IPG_RZ_ALL, RMON_STATISTICS_MASK);
+
+ /* Disable unused MIB statistics. */
+ ipg_w32(IPG_SM_MACCONTROLFRAMESXMTD | IPG_SM_MACCONTROLFRAMESRCVD |
+ IPG_SM_BCSTOCTETXMTOK_BCSTFRAMESXMTDOK | IPG_SM_TXJUMBOFRAMES |
+ IPG_SM_MCSTOCTETXMTOK_MCSTFRAMESXMTDOK | IPG_SM_RXJUMBOFRAMES |
+ IPG_SM_BCSTOCTETRCVDOK_BCSTFRAMESRCVDOK |
+ IPG_SM_UDPCHECKSUMERRORS | IPG_SM_TCPCHECKSUMERRORS |
+ IPG_SM_IPCHECKSUMERRORS, STATISTICS_MASK);
+
+ return 0;
+}
+
+/*
+ * Create a receive buffer within system memory and update
+ * NIC private structure appropriately.
+ */
+static int ipg_get_rxbuff(struct net_device *dev, int entry)
+{
+ struct ipg_nic_private *sp = netdev_priv(dev);
+ struct ipg_rx *rxfd = sp->rxd + entry;
+ struct sk_buff *skb;
+ u64 rxfragsize;
+
+ IPG_DEBUG_MSG("_get_rxbuff\n");
+
+ skb = netdev_alloc_skb_ip_align(dev, sp->rxsupport_size);
+ if (!skb) {
+ sp->rx_buff[entry] = NULL;
+ return -ENOMEM;
+ }
+
+ /* Associate the receive buffer with the IPG NIC. */
+ skb->dev = dev;
+
+ /* Save the address of the sk_buff structure. */
+ sp->rx_buff[entry] = skb;
+
+ rxfd->frag_info = cpu_to_le64(pci_map_single(sp->pdev, skb->data,
+ sp->rx_buf_sz, PCI_DMA_FROMDEVICE));
+
+ /* Set the RFD fragment length. */
+ rxfragsize = sp->rxfrag_size;
+ rxfd->frag_info |= cpu_to_le64((rxfragsize << 48) & IPG_RFI_FRAGLEN);
+
+ return 0;
+}
+
+static int init_rfdlist(struct net_device *dev)
+{
+ struct ipg_nic_private *sp = netdev_priv(dev);
+ void __iomem *ioaddr = sp->ioaddr;
+ unsigned int i;
+
+ IPG_DEBUG_MSG("_init_rfdlist\n");
+
+ for (i = 0; i < IPG_RFDLIST_LENGTH; i++) {
+ struct ipg_rx *rxfd = sp->rxd + i;
+
+ if (sp->rx_buff[i]) {
+ pci_unmap_single(sp->pdev,
+ le64_to_cpu(rxfd->frag_info) & ~IPG_RFI_FRAGLEN,
+ sp->rx_buf_sz, PCI_DMA_FROMDEVICE);
+ dev_kfree_skb_irq(sp->rx_buff[i]);
+ sp->rx_buff[i] = NULL;
+ }
+
+ /* Clear out the RFS field. */
+ rxfd->rfs = 0x0000000000000000;
+
+ if (ipg_get_rxbuff(dev, i) < 0) {
+ /*
+ * A receive buffer was not ready, break the
+ * RFD list here.
+ */
+ IPG_DEBUG_MSG("Cannot allocate Rx buffer\n");
+
+ /* Just in case we cannot allocate a single RFD.
+ * Should not occur.
+ */
+ if (i == 0) {
+ netdev_err(dev, "No memory available for RFD list\n");
+ return -ENOMEM;
+ }
+ }
+
+ rxfd->next_desc = cpu_to_le64(sp->rxd_map +
+ sizeof(struct ipg_rx)*(i + 1));
+ }
+ sp->rxd[i - 1].next_desc = cpu_to_le64(sp->rxd_map);
+
+ sp->rx_current = 0;
+ sp->rx_dirty = 0;
+
+ /* Write the location of the RFDList to the IPG. */
+ ipg_w32((u32) sp->rxd_map, RFD_LIST_PTR_0);
+ ipg_w32(0x00000000, RFD_LIST_PTR_1);
+
+ return 0;
+}
+
+static void init_tfdlist(struct net_device *dev)
+{
+ struct ipg_nic_private *sp = netdev_priv(dev);
+ void __iomem *ioaddr = sp->ioaddr;
+ unsigned int i;
+
+ IPG_DEBUG_MSG("_init_tfdlist\n");
+
+ for (i = 0; i < IPG_TFDLIST_LENGTH; i++) {
+ struct ipg_tx *txfd = sp->txd + i;
+
+ txfd->tfc = cpu_to_le64(IPG_TFC_TFDDONE);
+
+ if (sp->tx_buff[i]) {
+ dev_kfree_skb_irq(sp->tx_buff[i]);
+ sp->tx_buff[i] = NULL;
+ }
+
+ txfd->next_desc = cpu_to_le64(sp->txd_map +
+ sizeof(struct ipg_tx)*(i + 1));
+ }
+ sp->txd[i - 1].next_desc = cpu_to_le64(sp->txd_map);
+
+ sp->tx_current = 0;
+ sp->tx_dirty = 0;
+
+ /* Write the location of the TFDList to the IPG. */
+ IPG_DDEBUG_MSG("Starting TFDListPtr = %08x\n",
+ (u32) sp->txd_map);
+ ipg_w32((u32) sp->txd_map, TFD_LIST_PTR_0);
+ ipg_w32(0x00000000, TFD_LIST_PTR_1);
+
+ sp->reset_current_tfd = 1;
+}
+
+/*
+ * Free all transmit buffers which have already been transferred
+ * via DMA to the IPG.
+ */
+static void ipg_nic_txfree(struct net_device *dev)
+{
+ struct ipg_nic_private *sp = netdev_priv(dev);
+ unsigned int released, pending, dirty;
+
+ IPG_DEBUG_MSG("_nic_txfree\n");
+
+ pending = sp->tx_current - sp->tx_dirty;
+ dirty = sp->tx_dirty % IPG_TFDLIST_LENGTH;
+
+ for (released = 0; released < pending; released++) {
+ struct sk_buff *skb = sp->tx_buff[dirty];
+ struct ipg_tx *txfd = sp->txd + dirty;
+
+ IPG_DEBUG_MSG("TFC = %016lx\n", (unsigned long) txfd->tfc);
+
+ /* Look at each TFD's TFC field beginning
+ * at the last freed TFD up to the current TFD.
+ * If the TFDDone bit is set, free the associated
+ * buffer.
+ */
+ if (!(txfd->tfc & cpu_to_le64(IPG_TFC_TFDDONE)))
+ break;
+
+ /* Free the transmit buffer. */
+ if (skb) {
+ pci_unmap_single(sp->pdev,
+ le64_to_cpu(txfd->frag_info) & ~IPG_TFI_FRAGLEN,
+ skb->len, PCI_DMA_TODEVICE);
+
+ dev_kfree_skb_irq(skb);
+
+ sp->tx_buff[dirty] = NULL;
+ }
+ dirty = (dirty + 1) % IPG_TFDLIST_LENGTH;
+ }
+
+ sp->tx_dirty += released;
+
+ if (netif_queue_stopped(dev) &&
+ (sp->tx_current != (sp->tx_dirty + IPG_TFDLIST_LENGTH))) {
+ netif_wake_queue(dev);
+ }
+}
+
+static void ipg_tx_timeout(struct net_device *dev)
+{
+ struct ipg_nic_private *sp = netdev_priv(dev);
+ void __iomem *ioaddr = sp->ioaddr;
+
+ ipg_reset(dev, IPG_AC_TX_RESET | IPG_AC_DMA | IPG_AC_NETWORK |
+ IPG_AC_FIFO);
+
+ spin_lock_irq(&sp->lock);
+
+ /* Re-configure after DMA reset. */
+ if (ipg_io_config(dev) < 0)
+ netdev_info(dev, "Error during re-configuration\n");
+
+ init_tfdlist(dev);
+
+ spin_unlock_irq(&sp->lock);
+
+ ipg_w32((ipg_r32(MAC_CTRL) | IPG_MC_TX_ENABLE) & IPG_MC_RSVD_MASK,
+ MAC_CTRL);
+}
+
+/*
+ * For TxComplete interrupts, free all transmit
+ * buffers which have already been transferred via DMA
+ * to the IPG.
+ */
+static void ipg_nic_txcleanup(struct net_device *dev)
+{
+ struct ipg_nic_private *sp = netdev_priv(dev);
+ void __iomem *ioaddr = sp->ioaddr;
+ unsigned int i;
+
+ IPG_DEBUG_MSG("_nic_txcleanup\n");
+
+ for (i = 0; i < IPG_TFDLIST_LENGTH; i++) {
+ /* Reading the TXSTATUS register clears the
+ * TX_COMPLETE interrupt.
+ */
+ u32 txstatusdword = ipg_r32(TX_STATUS);
+
+ IPG_DEBUG_MSG("TxStatus = %08x\n", txstatusdword);
+
+ /* Check for Transmit errors. Error bits only valid if
+ * TX_COMPLETE bit in the TXSTATUS register is a 1.
+ */
+ if (!(txstatusdword & IPG_TS_TX_COMPLETE))
+ break;
+
+ /* If in 10Mbps mode, indicate transmit is ready. */
+ if (sp->tenmbpsmode) {
+ netif_wake_queue(dev);
+ }
+
+ /* Transmit error, increment stat counters. */
+ if (txstatusdword & IPG_TS_TX_ERROR) {
+ IPG_DEBUG_MSG("Transmit error\n");
+ sp->stats.tx_errors++;
+ }
+
+ /* Late collision, re-enable transmitter. */
+ if (txstatusdword & IPG_TS_LATE_COLLISION) {
+ IPG_DEBUG_MSG("Late collision on transmit\n");
+ ipg_w32((ipg_r32(MAC_CTRL) | IPG_MC_TX_ENABLE) &
+ IPG_MC_RSVD_MASK, MAC_CTRL);
+ }
+
+ /* Maximum collisions, re-enable transmitter. */
+ if (txstatusdword & IPG_TS_TX_MAX_COLL) {
+ IPG_DEBUG_MSG("Maximum collisions on transmit\n");
+ ipg_w32((ipg_r32(MAC_CTRL) | IPG_MC_TX_ENABLE) &
+ IPG_MC_RSVD_MASK, MAC_CTRL);
+ }
+
+ /* Transmit underrun, reset and re-enable
+ * transmitter.
+ */
+ if (txstatusdword & IPG_TS_TX_UNDERRUN) {
+ IPG_DEBUG_MSG("Transmitter underrun\n");
+ sp->stats.tx_fifo_errors++;
+ ipg_reset(dev, IPG_AC_TX_RESET | IPG_AC_DMA |
+ IPG_AC_NETWORK | IPG_AC_FIFO);
+
+ /* Re-configure after DMA reset. */
+ if (ipg_io_config(dev) < 0) {
+ netdev_info(dev, "Error during re-configuration\n");
+ }
+ init_tfdlist(dev);
+
+ ipg_w32((ipg_r32(MAC_CTRL) | IPG_MC_TX_ENABLE) &
+ IPG_MC_RSVD_MASK, MAC_CTRL);
+ }
+ }
+
+ ipg_nic_txfree(dev);
+}
+
+/* Provides statistical information about the IPG NIC. */
+static struct net_device_stats *ipg_nic_get_stats(struct net_device *dev)
+{
+ struct ipg_nic_private *sp = netdev_priv(dev);
+ void __iomem *ioaddr = sp->ioaddr;
+ u16 temp1;
+ u16 temp2;
+
+ IPG_DEBUG_MSG("_nic_get_stats\n");
+
+ /* Check to see if the NIC has been initialized via nic_open,
+ * before trying to read statistic registers.
+ */
+ if (!test_bit(__LINK_STATE_START, &dev->state))
+ return &sp->stats;
+
+ sp->stats.rx_packets += ipg_r32(IPG_FRAMESRCVDOK);
+ sp->stats.tx_packets += ipg_r32(IPG_FRAMESXMTDOK);
+ sp->stats.rx_bytes += ipg_r32(IPG_OCTETRCVOK);
+ sp->stats.tx_bytes += ipg_r32(IPG_OCTETXMTOK);
+ temp1 = ipg_r16(IPG_FRAMESLOSTRXERRORS);
+ sp->stats.rx_errors += temp1;
+ sp->stats.rx_missed_errors += temp1;
+ temp1 = ipg_r32(IPG_SINGLECOLFRAMES) + ipg_r32(IPG_MULTICOLFRAMES) +
+ ipg_r32(IPG_LATECOLLISIONS);
+ temp2 = ipg_r16(IPG_CARRIERSENSEERRORS);
+ sp->stats.collisions += temp1;
+ sp->stats.tx_dropped += ipg_r16(IPG_FRAMESABORTXSCOLLS);
+ sp->stats.tx_errors += ipg_r16(IPG_FRAMESWEXDEFERRAL) +
+ ipg_r32(IPG_FRAMESWDEFERREDXMT) + temp1 + temp2;
+ sp->stats.multicast += ipg_r32(IPG_MCSTOCTETRCVDOK);
+
+ /* detailed tx_errors */
+ sp->stats.tx_carrier_errors += temp2;
+
+ /* detailed rx_errors */
+ sp->stats.rx_length_errors += ipg_r16(IPG_INRANGELENGTHERRORS) +
+ ipg_r16(IPG_FRAMETOOLONGERRRORS);
+ sp->stats.rx_crc_errors += ipg_r16(IPG_FRAMECHECKSEQERRORS);
+
+ /* Unutilized IPG statistic registers. */
+ ipg_r32(IPG_MCSTFRAMESRCVDOK);
+
+ return &sp->stats;
+}
+
+/* Restore used receive buffers. */
+static int ipg_nic_rxrestore(struct net_device *dev)
+{
+ struct ipg_nic_private *sp = netdev_priv(dev);
+ const unsigned int curr = sp->rx_current;
+ unsigned int dirty = sp->rx_dirty;
+
+ IPG_DEBUG_MSG("_nic_rxrestore\n");
+
+ for (dirty = sp->rx_dirty; curr - dirty > 0; dirty++) {
+ unsigned int entry = dirty % IPG_RFDLIST_LENGTH;
+
+ /* rx_copybreak may poke hole here and there. */
+ if (sp->rx_buff[entry])
+ continue;
+
+ /* Generate a new receive buffer to replace the
+ * current buffer (which will be released by the
+ * Linux system).
+ */
+ if (ipg_get_rxbuff(dev, entry) < 0) {
+ IPG_DEBUG_MSG("Cannot allocate new Rx buffer\n");
+
+ break;
+ }
+
+ /* Reset the RFS field. */
+ sp->rxd[entry].rfs = 0x0000000000000000;
+ }
+ sp->rx_dirty = dirty;
+
+ return 0;
+}
+
+/* use jumboindex and jumbosize to control jumbo frame status
+ * initial status is jumboindex=-1 and jumbosize=0
+ * 1. jumboindex = -1 and jumbosize=0 : previous jumbo frame has been done.
+ * 2. jumboindex != -1 and jumbosize != 0 : jumbo frame is not over size and receiving
+ * 3. jumboindex = -1 and jumbosize != 0 : jumbo frame is over size, already dump
+ * previous receiving and need to continue dumping the current one
+ */
+enum {
+ NORMAL_PACKET,
+ ERROR_PACKET
+};
+
+enum {
+ FRAME_NO_START_NO_END = 0,
+ FRAME_WITH_START = 1,
+ FRAME_WITH_END = 10,
+ FRAME_WITH_START_WITH_END = 11
+};
+
+static void ipg_nic_rx_free_skb(struct net_device *dev)
+{
+ struct ipg_nic_private *sp = netdev_priv(dev);
+ unsigned int entry = sp->rx_current % IPG_RFDLIST_LENGTH;
+
+ if (sp->rx_buff[entry]) {
+ struct ipg_rx *rxfd = sp->rxd + entry;
+
+ pci_unmap_single(sp->pdev,
+ le64_to_cpu(rxfd->frag_info) & ~IPG_RFI_FRAGLEN,
+ sp->rx_buf_sz, PCI_DMA_FROMDEVICE);
+ dev_kfree_skb_irq(sp->rx_buff[entry]);
+ sp->rx_buff[entry] = NULL;
+ }
+}
+
+static int ipg_nic_rx_check_frame_type(struct net_device *dev)
+{
+ struct ipg_nic_private *sp = netdev_priv(dev);
+ struct ipg_rx *rxfd = sp->rxd + (sp->rx_current % IPG_RFDLIST_LENGTH);
+ int type = FRAME_NO_START_NO_END;
+
+ if (le64_to_cpu(rxfd->rfs) & IPG_RFS_FRAMESTART)
+ type += FRAME_WITH_START;
+ if (le64_to_cpu(rxfd->rfs) & IPG_RFS_FRAMEEND)
+ type += FRAME_WITH_END;
+ return type;
+}
+
+static int ipg_nic_rx_check_error(struct net_device *dev)
+{
+ struct ipg_nic_private *sp = netdev_priv(dev);
+ unsigned int entry = sp->rx_current % IPG_RFDLIST_LENGTH;
+ struct ipg_rx *rxfd = sp->rxd + entry;
+
+ if (IPG_DROP_ON_RX_ETH_ERRORS && (le64_to_cpu(rxfd->rfs) &
+ (IPG_RFS_RXFIFOOVERRUN | IPG_RFS_RXRUNTFRAME |
+ IPG_RFS_RXALIGNMENTERROR | IPG_RFS_RXFCSERROR |
+ IPG_RFS_RXOVERSIZEDFRAME | IPG_RFS_RXLENGTHERROR))) {
+ IPG_DEBUG_MSG("Rx error, RFS = %016lx\n",
+ (unsigned long) rxfd->rfs);
+
+ /* Increment general receive error statistic. */
+ sp->stats.rx_errors++;
+
+ /* Increment detailed receive error statistics. */
+ if (le64_to_cpu(rxfd->rfs) & IPG_RFS_RXFIFOOVERRUN) {
+ IPG_DEBUG_MSG("RX FIFO overrun occurred\n");
+
+ sp->stats.rx_fifo_errors++;
+ }
+
+ if (le64_to_cpu(rxfd->rfs) & IPG_RFS_RXRUNTFRAME) {
+ IPG_DEBUG_MSG("RX runt occurred\n");
+ sp->stats.rx_length_errors++;
+ }
+
+ /* Do nothing for IPG_RFS_RXOVERSIZEDFRAME,
+ * error count handled by a IPG statistic register.
+ */
+
+ if (le64_to_cpu(rxfd->rfs) & IPG_RFS_RXALIGNMENTERROR) {
+ IPG_DEBUG_MSG("RX alignment error occurred\n");
+ sp->stats.rx_frame_errors++;
+ }
+
+ /* Do nothing for IPG_RFS_RXFCSERROR, error count
+ * handled by a IPG statistic register.
+ */
+
+ /* Free the memory associated with the RX
+ * buffer since it is erroneous and we will
+ * not pass it to higher layer processes.
+ */
+ if (sp->rx_buff[entry]) {
+ pci_unmap_single(sp->pdev,
+ le64_to_cpu(rxfd->frag_info) & ~IPG_RFI_FRAGLEN,
+ sp->rx_buf_sz, PCI_DMA_FROMDEVICE);
+
+ dev_kfree_skb_irq(sp->rx_buff[entry]);
+ sp->rx_buff[entry] = NULL;
+ }
+ return ERROR_PACKET;
+ }
+ return NORMAL_PACKET;
+}
+
+static void ipg_nic_rx_with_start_and_end(struct net_device *dev,
+ struct ipg_nic_private *sp,
+ struct ipg_rx *rxfd, unsigned entry)
+{
+ struct ipg_jumbo *jumbo = &sp->jumbo;
+ struct sk_buff *skb;
+ int framelen;
+
+ if (jumbo->found_start) {
+ dev_kfree_skb_irq(jumbo->skb);
+ jumbo->found_start = 0;
+ jumbo->current_size = 0;
+ jumbo->skb = NULL;
+ }
+
+ /* 1: found error, 0 no error */
+ if (ipg_nic_rx_check_error(dev) != NORMAL_PACKET)
+ return;
+
+ skb = sp->rx_buff[entry];
+ if (!skb)
+ return;
+
+ /* accept this frame and send to upper layer */
+ framelen = le64_to_cpu(rxfd->rfs) & IPG_RFS_RXFRAMELEN;
+ if (framelen > sp->rxfrag_size)
+ framelen = sp->rxfrag_size;
+
+ skb_put(skb, framelen);
+ skb->protocol = eth_type_trans(skb, dev);
+ skb_checksum_none_assert(skb);
+ netif_rx(skb);
+ sp->rx_buff[entry] = NULL;
+}
+
+static void ipg_nic_rx_with_start(struct net_device *dev,
+ struct ipg_nic_private *sp,
+ struct ipg_rx *rxfd, unsigned entry)
+{
+ struct ipg_jumbo *jumbo = &sp->jumbo;
+ struct pci_dev *pdev = sp->pdev;
+ struct sk_buff *skb;
+
+ /* 1: found error, 0 no error */
+ if (ipg_nic_rx_check_error(dev) != NORMAL_PACKET)
+ return;
+
+ /* accept this frame and send to upper layer */
+ skb = sp->rx_buff[entry];
+ if (!skb)
+ return;
+
+ if (jumbo->found_start)
+ dev_kfree_skb_irq(jumbo->skb);
+
+ pci_unmap_single(pdev, le64_to_cpu(rxfd->frag_info) & ~IPG_RFI_FRAGLEN,
+ sp->rx_buf_sz, PCI_DMA_FROMDEVICE);
+
+ skb_put(skb, sp->rxfrag_size);
+
+ jumbo->found_start = 1;
+ jumbo->current_size = sp->rxfrag_size;
+ jumbo->skb = skb;
+
+ sp->rx_buff[entry] = NULL;
+}
+
+static void ipg_nic_rx_with_end(struct net_device *dev,
+ struct ipg_nic_private *sp,
+ struct ipg_rx *rxfd, unsigned entry)
+{
+ struct ipg_jumbo *jumbo = &sp->jumbo;
+
+ /* 1: found error, 0 no error */
+ if (ipg_nic_rx_check_error(dev) == NORMAL_PACKET) {
+ struct sk_buff *skb = sp->rx_buff[entry];
+
+ if (!skb)
+ return;
+
+ if (jumbo->found_start) {
+ int framelen, endframelen;
+
+ framelen = le64_to_cpu(rxfd->rfs) & IPG_RFS_RXFRAMELEN;
+
+ endframelen = framelen - jumbo->current_size;
+ if (framelen > sp->rxsupport_size)
+ dev_kfree_skb_irq(jumbo->skb);
+ else {
+ memcpy(skb_put(jumbo->skb, endframelen),
+ skb->data, endframelen);
+
+ jumbo->skb->protocol =
+ eth_type_trans(jumbo->skb, dev);
+
+ skb_checksum_none_assert(jumbo->skb);
+ netif_rx(jumbo->skb);
+ }
+ }
+
+ jumbo->found_start = 0;
+ jumbo->current_size = 0;
+ jumbo->skb = NULL;
+
+ ipg_nic_rx_free_skb(dev);
+ } else {
+ dev_kfree_skb_irq(jumbo->skb);
+ jumbo->found_start = 0;
+ jumbo->current_size = 0;
+ jumbo->skb = NULL;
+ }
+}
+
+static void ipg_nic_rx_no_start_no_end(struct net_device *dev,
+ struct ipg_nic_private *sp,
+ struct ipg_rx *rxfd, unsigned entry)
+{
+ struct ipg_jumbo *jumbo = &sp->jumbo;
+
+ /* 1: found error, 0 no error */
+ if (ipg_nic_rx_check_error(dev) == NORMAL_PACKET) {
+ struct sk_buff *skb = sp->rx_buff[entry];
+
+ if (skb) {
+ if (jumbo->found_start) {
+ jumbo->current_size += sp->rxfrag_size;
+ if (jumbo->current_size <= sp->rxsupport_size) {
+ memcpy(skb_put(jumbo->skb,
+ sp->rxfrag_size),
+ skb->data, sp->rxfrag_size);
+ }
+ }
+ ipg_nic_rx_free_skb(dev);
+ }
+ } else {
+ dev_kfree_skb_irq(jumbo->skb);
+ jumbo->found_start = 0;
+ jumbo->current_size = 0;
+ jumbo->skb = NULL;
+ }
+}
+
+static int ipg_nic_rx_jumbo(struct net_device *dev)
+{
+ struct ipg_nic_private *sp = netdev_priv(dev);
+ unsigned int curr = sp->rx_current;
+ void __iomem *ioaddr = sp->ioaddr;
+ unsigned int i;
+
+ IPG_DEBUG_MSG("_nic_rx\n");
+
+ for (i = 0; i < IPG_MAXRFDPROCESS_COUNT; i++, curr++) {
+ unsigned int entry = curr % IPG_RFDLIST_LENGTH;
+ struct ipg_rx *rxfd = sp->rxd + entry;
+
+ if (!(rxfd->rfs & cpu_to_le64(IPG_RFS_RFDDONE)))
+ break;
+
+ switch (ipg_nic_rx_check_frame_type(dev)) {
+ case FRAME_WITH_START_WITH_END:
+ ipg_nic_rx_with_start_and_end(dev, sp, rxfd, entry);
+ break;
+ case FRAME_WITH_START:
+ ipg_nic_rx_with_start(dev, sp, rxfd, entry);
+ break;
+ case FRAME_WITH_END:
+ ipg_nic_rx_with_end(dev, sp, rxfd, entry);
+ break;
+ case FRAME_NO_START_NO_END:
+ ipg_nic_rx_no_start_no_end(dev, sp, rxfd, entry);
+ break;
+ }
+ }
+
+ sp->rx_current = curr;
+
+ if (i == IPG_MAXRFDPROCESS_COUNT) {
+ /* There are more RFDs to process, however the
+ * allocated amount of RFD processing time has
+ * expired. Assert Interrupt Requested to make
+ * sure we come back to process the remaining RFDs.
+ */
+ ipg_w32(ipg_r32(ASIC_CTRL) | IPG_AC_INT_REQUEST, ASIC_CTRL);
+ }
+
+ ipg_nic_rxrestore(dev);
+
+ return 0;
+}
+
+static int ipg_nic_rx(struct net_device *dev)
+{
+ /* Transfer received Ethernet frames to higher network layers. */
+ struct ipg_nic_private *sp = netdev_priv(dev);
+ unsigned int curr = sp->rx_current;
+ void __iomem *ioaddr = sp->ioaddr;
+ struct ipg_rx *rxfd;
+ unsigned int i;
+
+ IPG_DEBUG_MSG("_nic_rx\n");
+
+#define __RFS_MASK \
+ cpu_to_le64(IPG_RFS_RFDDONE | IPG_RFS_FRAMESTART | IPG_RFS_FRAMEEND)
+
+ for (i = 0; i < IPG_MAXRFDPROCESS_COUNT; i++, curr++) {
+ unsigned int entry = curr % IPG_RFDLIST_LENGTH;
+ struct sk_buff *skb = sp->rx_buff[entry];
+ unsigned int framelen;
+
+ rxfd = sp->rxd + entry;
+
+ if (((rxfd->rfs & __RFS_MASK) != __RFS_MASK) || !skb)
+ break;
+
+ /* Get received frame length. */
+ framelen = le64_to_cpu(rxfd->rfs) & IPG_RFS_RXFRAMELEN;
+
+ /* Check for jumbo frame arrival with too small
+ * RXFRAG_SIZE.
+ */
+ if (framelen > sp->rxfrag_size) {
+ IPG_DEBUG_MSG
+ ("RFS FrameLen > allocated fragment size\n");
+
+ framelen = sp->rxfrag_size;
+ }
+
+ if ((IPG_DROP_ON_RX_ETH_ERRORS && (le64_to_cpu(rxfd->rfs) &
+ (IPG_RFS_RXFIFOOVERRUN | IPG_RFS_RXRUNTFRAME |
+ IPG_RFS_RXALIGNMENTERROR | IPG_RFS_RXFCSERROR |
+ IPG_RFS_RXOVERSIZEDFRAME | IPG_RFS_RXLENGTHERROR)))) {
+
+ IPG_DEBUG_MSG("Rx error, RFS = %016lx\n",
+ (unsigned long int) rxfd->rfs);
+
+ /* Increment general receive error statistic. */
+ sp->stats.rx_errors++;
+
+ /* Increment detailed receive error statistics. */
+ if (le64_to_cpu(rxfd->rfs) & IPG_RFS_RXFIFOOVERRUN) {
+ IPG_DEBUG_MSG("RX FIFO overrun occurred\n");
+ sp->stats.rx_fifo_errors++;
+ }
+
+ if (le64_to_cpu(rxfd->rfs) & IPG_RFS_RXRUNTFRAME) {
+ IPG_DEBUG_MSG("RX runt occurred\n");
+ sp->stats.rx_length_errors++;
+ }
+
+ if (le64_to_cpu(rxfd->rfs) & IPG_RFS_RXOVERSIZEDFRAME) ;
+ /* Do nothing, error count handled by a IPG
+ * statistic register.
+ */
+
+ if (le64_to_cpu(rxfd->rfs) & IPG_RFS_RXALIGNMENTERROR) {
+ IPG_DEBUG_MSG("RX alignment error occurred\n");
+ sp->stats.rx_frame_errors++;
+ }
+
+ if (le64_to_cpu(rxfd->rfs) & IPG_RFS_RXFCSERROR) ;
+ /* Do nothing, error count handled by a IPG
+ * statistic register.
+ */
+
+ /* Free the memory associated with the RX
+ * buffer since it is erroneous and we will
+ * not pass it to higher layer processes.
+ */
+ if (skb) {
+ __le64 info = rxfd->frag_info;
+
+ pci_unmap_single(sp->pdev,
+ le64_to_cpu(info) & ~IPG_RFI_FRAGLEN,
+ sp->rx_buf_sz, PCI_DMA_FROMDEVICE);
+
+ dev_kfree_skb_irq(skb);
+ }
+ } else {
+
+ /* Adjust the new buffer length to accommodate the size
+ * of the received frame.
+ */
+ skb_put(skb, framelen);
+
+ /* Set the buffer's protocol field to Ethernet. */
+ skb->protocol = eth_type_trans(skb, dev);
+
+ /* The IPG encountered an error with (or
+ * there were no) IP/TCP/UDP checksums.
+ * This may or may not indicate an invalid
+ * IP/TCP/UDP frame was received. Let the
+ * upper layer decide.
+ */
+ skb_checksum_none_assert(skb);
+
+ /* Hand off frame for higher layer processing.
+ * The function netif_rx() releases the sk_buff
+ * when processing completes.
+ */
+ netif_rx(skb);
+ }
+
+ /* Assure RX buffer is not reused by IPG. */
+ sp->rx_buff[entry] = NULL;
+ }
+
+ /*
+ * If there are more RFDs to process and the allocated amount of RFD
+ * processing time has expired, assert Interrupt Requested to make
+ * sure we come back to process the remaining RFDs.
+ */
+ if (i == IPG_MAXRFDPROCESS_COUNT)
+ ipg_w32(ipg_r32(ASIC_CTRL) | IPG_AC_INT_REQUEST, ASIC_CTRL);
+
+#ifdef IPG_DEBUG
+ /* Check if the RFD list contained no receive frame data. */
+ if (!i)
+ sp->EmptyRFDListCount++;
+#endif
+ while ((le64_to_cpu(rxfd->rfs) & IPG_RFS_RFDDONE) &&
+ !((le64_to_cpu(rxfd->rfs) & IPG_RFS_FRAMESTART) &&
+ (le64_to_cpu(rxfd->rfs) & IPG_RFS_FRAMEEND))) {
+ unsigned int entry = curr++ % IPG_RFDLIST_LENGTH;
+
+ rxfd = sp->rxd + entry;
+
+ IPG_DEBUG_MSG("Frame requires multiple RFDs\n");
+
+ /* An unexpected event, additional code needed to handle
+ * properly. So for the time being, just disregard the
+ * frame.
+ */
+
+ /* Free the memory associated with the RX
+ * buffer since it is erroneous and we will
+ * not pass it to higher layer processes.
+ */
+ if (sp->rx_buff[entry]) {
+ pci_unmap_single(sp->pdev,
+ le64_to_cpu(rxfd->frag_info) & ~IPG_RFI_FRAGLEN,
+ sp->rx_buf_sz, PCI_DMA_FROMDEVICE);
+ dev_kfree_skb_irq(sp->rx_buff[entry]);
+ }
+
+ /* Assure RX buffer is not reused by IPG. */
+ sp->rx_buff[entry] = NULL;
+ }
+
+ sp->rx_current = curr;
+
+ /* Check to see if there are a minimum number of used
+ * RFDs before restoring any (should improve performance.)
+ */
+ if ((curr - sp->rx_dirty) >= IPG_MINUSEDRFDSTOFREE)
+ ipg_nic_rxrestore(dev);
+
+ return 0;
+}
+
+static void ipg_reset_after_host_error(struct work_struct *work)
+{
+ struct ipg_nic_private *sp =
+ container_of(work, struct ipg_nic_private, task.work);
+ struct net_device *dev = sp->dev;
+
+ /*
+ * Acknowledge HostError interrupt by resetting
+ * IPG DMA and HOST.
+ */
+ ipg_reset(dev, IPG_AC_GLOBAL_RESET | IPG_AC_HOST | IPG_AC_DMA);
+
+ init_rfdlist(dev);
+ init_tfdlist(dev);
+
+ if (ipg_io_config(dev) < 0) {
+ netdev_info(dev, "Cannot recover from PCI error\n");
+ schedule_delayed_work(&sp->task, HZ);
+ }
+}
+
+static irqreturn_t ipg_interrupt_handler(int irq, void *dev_inst)
+{
+ struct net_device *dev = dev_inst;
+ struct ipg_nic_private *sp = netdev_priv(dev);
+ void __iomem *ioaddr = sp->ioaddr;
+ unsigned int handled = 0;
+ u16 status;
+
+ IPG_DEBUG_MSG("_interrupt_handler\n");
+
+ if (sp->is_jumbo)
+ ipg_nic_rxrestore(dev);
+
+ spin_lock(&sp->lock);
+
+ /* Get interrupt source information, and acknowledge
+ * some (i.e. TxDMAComplete, RxDMAComplete, RxEarly,
+ * IntRequested, MacControlFrame, LinkEvent) interrupts
+ * if issued. Also, all IPG interrupts are disabled by
+ * reading IntStatusAck.
+ */
+ status = ipg_r16(INT_STATUS_ACK);
+
+ IPG_DEBUG_MSG("IntStatusAck = %04x\n", status);
+
+ /* Shared IRQ of remove event. */
+ if (!(status & IPG_IS_RSVD_MASK))
+ goto out_enable;
+
+ handled = 1;
+
+ if (unlikely(!netif_running(dev)))
+ goto out_unlock;
+
+ /* If RFDListEnd interrupt, restore all used RFDs. */
+ if (status & IPG_IS_RFD_LIST_END) {
+ IPG_DEBUG_MSG("RFDListEnd Interrupt\n");
+
+ /* The RFD list end indicates an RFD was encountered
+ * with a 0 NextPtr, or with an RFDDone bit set to 1
+ * (indicating the RFD is not read for use by the
+ * IPG.) Try to restore all RFDs.
+ */
+ ipg_nic_rxrestore(dev);
+
+#ifdef IPG_DEBUG
+ /* Increment the RFDlistendCount counter. */
+ sp->RFDlistendCount++;
+#endif
+ }
+
+ /* If RFDListEnd, RxDMAPriority, RxDMAComplete, or
+ * IntRequested interrupt, process received frames. */
+ if ((status & IPG_IS_RX_DMA_PRIORITY) ||
+ (status & IPG_IS_RFD_LIST_END) ||
+ (status & IPG_IS_RX_DMA_COMPLETE) ||
+ (status & IPG_IS_INT_REQUESTED)) {
+#ifdef IPG_DEBUG
+ /* Increment the RFD list checked counter if interrupted
+ * only to check the RFD list. */
+ if (status & (~(IPG_IS_RX_DMA_PRIORITY | IPG_IS_RFD_LIST_END |
+ IPG_IS_RX_DMA_COMPLETE | IPG_IS_INT_REQUESTED) &
+ (IPG_IS_HOST_ERROR | IPG_IS_TX_DMA_COMPLETE |
+ IPG_IS_LINK_EVENT | IPG_IS_TX_COMPLETE |
+ IPG_IS_UPDATE_STATS)))
+ sp->RFDListCheckedCount++;
+#endif
+
+ if (sp->is_jumbo)
+ ipg_nic_rx_jumbo(dev);
+ else
+ ipg_nic_rx(dev);
+ }
+
+ /* If TxDMAComplete interrupt, free used TFDs. */
+ if (status & IPG_IS_TX_DMA_COMPLETE)
+ ipg_nic_txfree(dev);
+
+ /* TxComplete interrupts indicate one of numerous actions.
+ * Determine what action to take based on TXSTATUS register.
+ */
+ if (status & IPG_IS_TX_COMPLETE)
+ ipg_nic_txcleanup(dev);
+
+ /* If UpdateStats interrupt, update Linux Ethernet statistics */
+ if (status & IPG_IS_UPDATE_STATS)
+ ipg_nic_get_stats(dev);
+
+ /* If HostError interrupt, reset IPG. */
+ if (status & IPG_IS_HOST_ERROR) {
+ IPG_DDEBUG_MSG("HostError Interrupt\n");
+
+ schedule_delayed_work(&sp->task, 0);
+ }
+
+ /* If LinkEvent interrupt, resolve autonegotiation. */
+ if (status & IPG_IS_LINK_EVENT) {
+ if (ipg_config_autoneg(dev) < 0)
+ netdev_info(dev, "Auto-negotiation error\n");
+ }
+
+ /* If MACCtrlFrame interrupt, do nothing. */
+ if (status & IPG_IS_MAC_CTRL_FRAME)
+ IPG_DEBUG_MSG("MACCtrlFrame interrupt\n");
+
+ /* If RxComplete interrupt, do nothing. */
+ if (status & IPG_IS_RX_COMPLETE)
+ IPG_DEBUG_MSG("RxComplete interrupt\n");
+
+ /* If RxEarly interrupt, do nothing. */
+ if (status & IPG_IS_RX_EARLY)
+ IPG_DEBUG_MSG("RxEarly interrupt\n");
+
+out_enable:
+ /* Re-enable IPG interrupts. */
+ ipg_w16(IPG_IE_TX_DMA_COMPLETE | IPG_IE_RX_DMA_COMPLETE |
+ IPG_IE_HOST_ERROR | IPG_IE_INT_REQUESTED | IPG_IE_TX_COMPLETE |
+ IPG_IE_LINK_EVENT | IPG_IE_UPDATE_STATS, INT_ENABLE);
+out_unlock:
+ spin_unlock(&sp->lock);
+
+ return IRQ_RETVAL(handled);
+}
+
+static void ipg_rx_clear(struct ipg_nic_private *sp)
+{
+ unsigned int i;
+
+ for (i = 0; i < IPG_RFDLIST_LENGTH; i++) {
+ if (sp->rx_buff[i]) {
+ struct ipg_rx *rxfd = sp->rxd + i;
+
+ dev_kfree_skb_irq(sp->rx_buff[i]);
+ sp->rx_buff[i] = NULL;
+ pci_unmap_single(sp->pdev,
+ le64_to_cpu(rxfd->frag_info) & ~IPG_RFI_FRAGLEN,
+ sp->rx_buf_sz, PCI_DMA_FROMDEVICE);
+ }
+ }
+}
+
+static void ipg_tx_clear(struct ipg_nic_private *sp)
+{
+ unsigned int i;
+
+ for (i = 0; i < IPG_TFDLIST_LENGTH; i++) {
+ if (sp->tx_buff[i]) {
+ struct ipg_tx *txfd = sp->txd + i;
+
+ pci_unmap_single(sp->pdev,
+ le64_to_cpu(txfd->frag_info) & ~IPG_TFI_FRAGLEN,
+ sp->tx_buff[i]->len, PCI_DMA_TODEVICE);
+
+ dev_kfree_skb_irq(sp->tx_buff[i]);
+
+ sp->tx_buff[i] = NULL;
+ }
+ }
+}
+
+static int ipg_nic_open(struct net_device *dev)
+{
+ struct ipg_nic_private *sp = netdev_priv(dev);
+ void __iomem *ioaddr = sp->ioaddr;
+ struct pci_dev *pdev = sp->pdev;
+ int rc;
+
+ IPG_DEBUG_MSG("_nic_open\n");
+
+ sp->rx_buf_sz = sp->rxsupport_size;
+
+ /* Check for interrupt line conflicts, and request interrupt
+ * line for IPG.
+ *
+ * IMPORTANT: Disable IPG interrupts prior to registering
+ * IRQ.
+ */
+ ipg_w16(0x0000, INT_ENABLE);
+
+ /* Register the interrupt line to be used by the IPG within
+ * the Linux system.
+ */
+ rc = request_irq(pdev->irq, ipg_interrupt_handler, IRQF_SHARED,
+ dev->name, dev);
+ if (rc < 0) {
+ netdev_info(dev, "Error when requesting interrupt\n");
+ goto out;
+ }
+
+ dev->irq = pdev->irq;
+
+ rc = -ENOMEM;
+
+ sp->rxd = dma_alloc_coherent(&pdev->dev, IPG_RX_RING_BYTES,
+ &sp->rxd_map, GFP_KERNEL);
+ if (!sp->rxd)
+ goto err_free_irq_0;
+
+ sp->txd = dma_alloc_coherent(&pdev->dev, IPG_TX_RING_BYTES,
+ &sp->txd_map, GFP_KERNEL);
+ if (!sp->txd)
+ goto err_free_rx_1;
+
+ rc = init_rfdlist(dev);
+ if (rc < 0) {
+ netdev_info(dev, "Error during configuration\n");
+ goto err_free_tx_2;
+ }
+
+ init_tfdlist(dev);
+
+ rc = ipg_io_config(dev);
+ if (rc < 0) {
+ netdev_info(dev, "Error during configuration\n");
+ goto err_release_tfdlist_3;
+ }
+
+ /* Resolve autonegotiation. */
+ if (ipg_config_autoneg(dev) < 0)
+ netdev_info(dev, "Auto-negotiation error\n");
+
+ /* initialize JUMBO Frame control variable */
+ sp->jumbo.found_start = 0;
+ sp->jumbo.current_size = 0;
+ sp->jumbo.skb = NULL;
+
+ /* Enable transmit and receive operation of the IPG. */
+ ipg_w32((ipg_r32(MAC_CTRL) | IPG_MC_RX_ENABLE | IPG_MC_TX_ENABLE) &
+ IPG_MC_RSVD_MASK, MAC_CTRL);
+
+ netif_start_queue(dev);
+out:
+ return rc;
+
+err_release_tfdlist_3:
+ ipg_tx_clear(sp);
+ ipg_rx_clear(sp);
+err_free_tx_2:
+ dma_free_coherent(&pdev->dev, IPG_TX_RING_BYTES, sp->txd, sp->txd_map);
+err_free_rx_1:
+ dma_free_coherent(&pdev->dev, IPG_RX_RING_BYTES, sp->rxd, sp->rxd_map);
+err_free_irq_0:
+ free_irq(pdev->irq, dev);
+ goto out;
+}
+
+static int ipg_nic_stop(struct net_device *dev)
+{
+ struct ipg_nic_private *sp = netdev_priv(dev);
+ void __iomem *ioaddr = sp->ioaddr;
+ struct pci_dev *pdev = sp->pdev;
+
+ IPG_DEBUG_MSG("_nic_stop\n");
+
+ netif_stop_queue(dev);
+
+ IPG_DUMPTFDLIST(dev);
+
+ do {
+ (void) ipg_r16(INT_STATUS_ACK);
+
+ ipg_reset(dev, IPG_AC_GLOBAL_RESET | IPG_AC_HOST | IPG_AC_DMA);
+
+ synchronize_irq(pdev->irq);
+ } while (ipg_r16(INT_ENABLE) & IPG_IE_RSVD_MASK);
+
+ ipg_rx_clear(sp);
+
+ ipg_tx_clear(sp);
+
+ pci_free_consistent(pdev, IPG_RX_RING_BYTES, sp->rxd, sp->rxd_map);
+ pci_free_consistent(pdev, IPG_TX_RING_BYTES, sp->txd, sp->txd_map);
+
+ free_irq(pdev->irq, dev);
+
+ return 0;
+}
+
+static netdev_tx_t ipg_nic_hard_start_xmit(struct sk_buff *skb,
+ struct net_device *dev)
+{
+ struct ipg_nic_private *sp = netdev_priv(dev);
+ void __iomem *ioaddr = sp->ioaddr;
+ unsigned int entry = sp->tx_current % IPG_TFDLIST_LENGTH;
+ unsigned long flags;
+ struct ipg_tx *txfd;
+
+ IPG_DDEBUG_MSG("_nic_hard_start_xmit\n");
+
+ /* If in 10Mbps mode, stop the transmit queue so
+ * no more transmit frames are accepted.
+ */
+ if (sp->tenmbpsmode)
+ netif_stop_queue(dev);
+
+ if (sp->reset_current_tfd) {
+ sp->reset_current_tfd = 0;
+ entry = 0;
+ }
+
+ txfd = sp->txd + entry;
+
+ sp->tx_buff[entry] = skb;
+
+ /* Clear all TFC fields, except TFDDONE. */
+ txfd->tfc = cpu_to_le64(IPG_TFC_TFDDONE);
+
+ /* Specify the TFC field within the TFD. */
+ txfd->tfc |= cpu_to_le64(IPG_TFC_WORDALIGNDISABLED |
+ (IPG_TFC_FRAMEID & sp->tx_current) |
+ (IPG_TFC_FRAGCOUNT & (1 << 24)));
+ /*
+ * 16--17 (WordAlign) <- 3 (disable),
+ * 0--15 (FrameId) <- sp->tx_current,
+ * 24--27 (FragCount) <- 1
+ */
+
+ /* Request TxComplete interrupts at an interval defined
+ * by the constant IPG_FRAMESBETWEENTXCOMPLETES.
+ * Request TxComplete interrupt for every frame
+ * if in 10Mbps mode to accommodate problem with 10Mbps
+ * processing.
+ */
+ if (sp->tenmbpsmode)
+ txfd->tfc |= cpu_to_le64(IPG_TFC_TXINDICATE);
+ txfd->tfc |= cpu_to_le64(IPG_TFC_TXDMAINDICATE);
+ /* Based on compilation option, determine if FCS is to be
+ * appended to transmit frame by IPG.
+ */
+ if (!(IPG_APPEND_FCS_ON_TX))
+ txfd->tfc |= cpu_to_le64(IPG_TFC_FCSAPPENDDISABLE);
+
+ /* Based on compilation option, determine if IP, TCP and/or
+ * UDP checksums are to be added to transmit frame by IPG.
+ */
+ if (IPG_ADD_IPCHECKSUM_ON_TX)
+ txfd->tfc |= cpu_to_le64(IPG_TFC_IPCHECKSUMENABLE);
+
+ if (IPG_ADD_TCPCHECKSUM_ON_TX)
+ txfd->tfc |= cpu_to_le64(IPG_TFC_TCPCHECKSUMENABLE);
+
+ if (IPG_ADD_UDPCHECKSUM_ON_TX)
+ txfd->tfc |= cpu_to_le64(IPG_TFC_UDPCHECKSUMENABLE);
+
+ /* Based on compilation option, determine if VLAN tag info is to be
+ * inserted into transmit frame by IPG.
+ */
+ if (IPG_INSERT_MANUAL_VLAN_TAG) {
+ txfd->tfc |= cpu_to_le64(IPG_TFC_VLANTAGINSERT |
+ ((u64) IPG_MANUAL_VLAN_VID << 32) |
+ ((u64) IPG_MANUAL_VLAN_CFI << 44) |
+ ((u64) IPG_MANUAL_VLAN_USERPRIORITY << 45));
+ }
+
+ /* The fragment start location within system memory is defined
+ * by the sk_buff structure's data field. The physical address
+ * of this location within the system's virtual memory space
+ * is determined using the IPG_HOST2BUS_MAP function.
+ */
+ txfd->frag_info = cpu_to_le64(pci_map_single(sp->pdev, skb->data,
+ skb->len, PCI_DMA_TODEVICE));
+
+ /* The length of the fragment within system memory is defined by
+ * the sk_buff structure's len field.
+ */
+ txfd->frag_info |= cpu_to_le64(IPG_TFI_FRAGLEN &
+ ((u64) (skb->len & 0xffff) << 48));
+
+ /* Clear the TFDDone bit last to indicate the TFD is ready
+ * for transfer to the IPG.
+ */
+ txfd->tfc &= cpu_to_le64(~IPG_TFC_TFDDONE);
+
+ spin_lock_irqsave(&sp->lock, flags);
+
+ sp->tx_current++;
+
+ mmiowb();
+
+ ipg_w32(IPG_DC_TX_DMA_POLL_NOW, DMA_CTRL);
+
+ if (sp->tx_current == (sp->tx_dirty + IPG_TFDLIST_LENGTH))
+ netif_stop_queue(dev);
+
+ spin_unlock_irqrestore(&sp->lock, flags);
+
+ return NETDEV_TX_OK;
+}
+
+static void ipg_set_phy_default_param(unsigned char rev,
+ struct net_device *dev, int phy_address)
+{
+ unsigned short length;
+ unsigned char revision;
+ const unsigned short *phy_param;
+ unsigned short address, value;
+
+ phy_param = &DefaultPhyParam[0];
+ length = *phy_param & 0x00FF;
+ revision = (unsigned char)((*phy_param) >> 8);
+ phy_param++;
+ while (length != 0) {
+ if (rev == revision) {
+ while (length > 1) {
+ address = *phy_param;
+ value = *(phy_param + 1);
+ phy_param += 2;
+ mdio_write(dev, phy_address, address, value);
+ length -= 4;
+ }
+ break;
+ } else {
+ phy_param += length / 2;
+ length = *phy_param & 0x00FF;
+ revision = (unsigned char)((*phy_param) >> 8);
+ phy_param++;
+ }
+ }
+}
+
+static int read_eeprom(struct net_device *dev, int eep_addr)
+{
+ void __iomem *ioaddr = ipg_ioaddr(dev);
+ unsigned int i;
+ int ret = 0;
+ u16 value;
+
+ value = IPG_EC_EEPROM_READOPCODE | (eep_addr & 0xff);
+ ipg_w16(value, EEPROM_CTRL);
+
+ for (i = 0; i < 1000; i++) {
+ u16 data;
+
+ mdelay(10);
+ data = ipg_r16(EEPROM_CTRL);
+ if (!(data & IPG_EC_EEPROM_BUSY)) {
+ ret = ipg_r16(EEPROM_DATA);
+ break;
+ }
+ }
+ return ret;
+}
+
+static void ipg_init_mii(struct net_device *dev)
+{
+ struct ipg_nic_private *sp = netdev_priv(dev);
+ struct mii_if_info *mii_if = &sp->mii_if;
+ int phyaddr;
+
+ mii_if->dev = dev;
+ mii_if->mdio_read = mdio_read;
+ mii_if->mdio_write = mdio_write;
+ mii_if->phy_id_mask = 0x1f;
+ mii_if->reg_num_mask = 0x1f;
+
+ mii_if->phy_id = phyaddr = ipg_find_phyaddr(dev);
+
+ if (phyaddr != 0x1f) {
+ u16 mii_phyctrl, mii_1000cr;
+
+ mii_1000cr = mdio_read(dev, phyaddr, MII_CTRL1000);
+ mii_1000cr |= ADVERTISE_1000FULL | ADVERTISE_1000HALF |
+ GMII_PHY_1000BASETCONTROL_PreferMaster;
+ mdio_write(dev, phyaddr, MII_CTRL1000, mii_1000cr);
+
+ mii_phyctrl = mdio_read(dev, phyaddr, MII_BMCR);
+
+ /* Set default phyparam */
+ ipg_set_phy_default_param(sp->pdev->revision, dev, phyaddr);
+
+ /* Reset PHY */
+ mii_phyctrl |= BMCR_RESET | BMCR_ANRESTART;
+ mdio_write(dev, phyaddr, MII_BMCR, mii_phyctrl);
+
+ }
+}
+
+static int ipg_hw_init(struct net_device *dev)
+{
+ struct ipg_nic_private *sp = netdev_priv(dev);
+ void __iomem *ioaddr = sp->ioaddr;
+ unsigned int i;
+ int rc;
+
+ /* Read/Write and Reset EEPROM Value */
+ /* Read LED Mode Configuration from EEPROM */
+ sp->led_mode = read_eeprom(dev, 6);
+
+ /* Reset all functions within the IPG. Do not assert
+ * RST_OUT as not compatible with some PHYs.
+ */
+ rc = ipg_reset(dev, IPG_RESET_MASK);
+ if (rc < 0)
+ goto out;
+
+ ipg_init_mii(dev);
+
+ /* Read MAC Address from EEPROM */
+ for (i = 0; i < 3; i++)
+ sp->station_addr[i] = read_eeprom(dev, 16 + i);
+
+ for (i = 0; i < 3; i++)
+ ipg_w16(sp->station_addr[i], STATION_ADDRESS_0 + 2*i);
+
+ /* Set station address in ethernet_device structure. */
+ dev->dev_addr[0] = ipg_r16(STATION_ADDRESS_0) & 0x00ff;
+ dev->dev_addr[1] = (ipg_r16(STATION_ADDRESS_0) & 0xff00) >> 8;
+ dev->dev_addr[2] = ipg_r16(STATION_ADDRESS_1) & 0x00ff;
+ dev->dev_addr[3] = (ipg_r16(STATION_ADDRESS_1) & 0xff00) >> 8;
+ dev->dev_addr[4] = ipg_r16(STATION_ADDRESS_2) & 0x00ff;
+ dev->dev_addr[5] = (ipg_r16(STATION_ADDRESS_2) & 0xff00) >> 8;
+out:
+ return rc;
+}
+
+static int ipg_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
+{
+ struct ipg_nic_private *sp = netdev_priv(dev);
+ int rc;
+
+ mutex_lock(&sp->mii_mutex);
+ rc = generic_mii_ioctl(&sp->mii_if, if_mii(ifr), cmd, NULL);
+ mutex_unlock(&sp->mii_mutex);
+
+ return rc;
+}
+
+static int ipg_nic_change_mtu(struct net_device *dev, int new_mtu)
+{
+ struct ipg_nic_private *sp = netdev_priv(dev);
+ int err;
+
+ /* Function to accommodate changes to Maximum Transfer Unit
+ * (or MTU) of IPG NIC. Cannot use default function since
+ * the default will not allow for MTU > 1500 bytes.
+ */
+
+ IPG_DEBUG_MSG("_nic_change_mtu\n");
+
+ /*
+ * Check that the new MTU value is between 68 (14 byte header, 46 byte
+ * payload, 4 byte FCS) and 10 KB, which is the largest supported MTU.
+ */
+ if (new_mtu < 68 || new_mtu > 10240)
+ return -EINVAL;
+
+ err = ipg_nic_stop(dev);
+ if (err)
+ return err;
+
+ dev->mtu = new_mtu;
+
+ sp->max_rxframe_size = new_mtu;
+
+ sp->rxfrag_size = new_mtu;
+ if (sp->rxfrag_size > 4088)
+ sp->rxfrag_size = 4088;
+
+ sp->rxsupport_size = sp->max_rxframe_size;
+
+ if (new_mtu > 0x0600)
+ sp->is_jumbo = true;
+ else
+ sp->is_jumbo = false;
+
+ return ipg_nic_open(dev);
+}
+
+static int ipg_get_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+ struct ipg_nic_private *sp = netdev_priv(dev);
+ int rc;
+
+ mutex_lock(&sp->mii_mutex);
+ rc = mii_ethtool_gset(&sp->mii_if, cmd);
+ mutex_unlock(&sp->mii_mutex);
+
+ return rc;
+}
+
+static int ipg_set_settings(struct net_device *dev, struct ethtool_cmd *cmd)
+{
+ struct ipg_nic_private *sp = netdev_priv(dev);
+ int rc;
+
+ mutex_lock(&sp->mii_mutex);
+ rc = mii_ethtool_sset(&sp->mii_if, cmd);
+ mutex_unlock(&sp->mii_mutex);
+
+ return rc;
+}
+
+static int ipg_nway_reset(struct net_device *dev)
+{
+ struct ipg_nic_private *sp = netdev_priv(dev);
+ int rc;
+
+ mutex_lock(&sp->mii_mutex);
+ rc = mii_nway_restart(&sp->mii_if);
+ mutex_unlock(&sp->mii_mutex);
+
+ return rc;
+}
+
+static const struct ethtool_ops ipg_ethtool_ops = {
+ .get_settings = ipg_get_settings,
+ .set_settings = ipg_set_settings,
+ .nway_reset = ipg_nway_reset,
+};
+
+static void __devexit ipg_remove(struct pci_dev *pdev)
+{
+ struct net_device *dev = pci_get_drvdata(pdev);
+ struct ipg_nic_private *sp = netdev_priv(dev);
+
+ IPG_DEBUG_MSG("_remove\n");
+
+ /* Un-register Ethernet device. */
+ unregister_netdev(dev);
+
+ pci_iounmap(pdev, sp->ioaddr);
+
+ pci_release_regions(pdev);
+
+ free_netdev(dev);
+ pci_disable_device(pdev);
+ pci_set_drvdata(pdev, NULL);
+}
+
+static const struct net_device_ops ipg_netdev_ops = {
+ .ndo_open = ipg_nic_open,
+ .ndo_stop = ipg_nic_stop,
+ .ndo_start_xmit = ipg_nic_hard_start_xmit,
+ .ndo_get_stats = ipg_nic_get_stats,
+ .ndo_set_multicast_list = ipg_nic_set_multicast_list,
+ .ndo_do_ioctl = ipg_ioctl,
+ .ndo_tx_timeout = ipg_tx_timeout,
+ .ndo_change_mtu = ipg_nic_change_mtu,
+ .ndo_set_mac_address = eth_mac_addr,
+ .ndo_validate_addr = eth_validate_addr,
+};
+
+static int __devinit ipg_probe(struct pci_dev *pdev,
+ const struct pci_device_id *id)
+{
+ unsigned int i = id->driver_data;
+ struct ipg_nic_private *sp;
+ struct net_device *dev;
+ void __iomem *ioaddr;
+ int rc;
+
+ rc = pci_enable_device(pdev);
+ if (rc < 0)
+ goto out;
+
+ pr_info("%s: %s\n", pci_name(pdev), ipg_brand_name[i]);
+
+ pci_set_master(pdev);
+
+ rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(40));
+ if (rc < 0) {
+ rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
+ if (rc < 0) {
+ pr_err("%s: DMA config failed\n", pci_name(pdev));
+ goto err_disable_0;
+ }
+ }
+
+ /*
+ * Initialize net device.
+ */
+ dev = alloc_etherdev(sizeof(struct ipg_nic_private));
+ if (!dev) {
+ pr_err("%s: alloc_etherdev failed\n", pci_name(pdev));
+ rc = -ENOMEM;
+ goto err_disable_0;
+ }
+
+ sp = netdev_priv(dev);
+ spin_lock_init(&sp->lock);
+ mutex_init(&sp->mii_mutex);
+
+ sp->is_jumbo = IPG_IS_JUMBO;
+ sp->rxfrag_size = IPG_RXFRAG_SIZE;
+ sp->rxsupport_size = IPG_RXSUPPORT_SIZE;
+ sp->max_rxframe_size = IPG_MAX_RXFRAME_SIZE;
+
+ /* Declare IPG NIC functions for Ethernet device methods.
+ */
+ dev->netdev_ops = &ipg_netdev_ops;
+ SET_NETDEV_DEV(dev, &pdev->dev);
+ SET_ETHTOOL_OPS(dev, &ipg_ethtool_ops);
+
+ rc = pci_request_regions(pdev, DRV_NAME);
+ if (rc)
+ goto err_free_dev_1;
+
+ ioaddr = pci_iomap(pdev, 1, pci_resource_len(pdev, 1));
+ if (!ioaddr) {
+ pr_err("%s: cannot map MMIO\n", pci_name(pdev));
+ rc = -EIO;
+ goto err_release_regions_2;
+ }
+
+ /* Save the pointer to the PCI device information. */
+ sp->ioaddr = ioaddr;
+ sp->pdev = pdev;
+ sp->dev = dev;
+
+ INIT_DELAYED_WORK(&sp->task, ipg_reset_after_host_error);
+
+ pci_set_drvdata(pdev, dev);
+
+ rc = ipg_hw_init(dev);
+ if (rc < 0)
+ goto err_unmap_3;
+
+ rc = register_netdev(dev);
+ if (rc < 0)
+ goto err_unmap_3;
+
+ netdev_info(dev, "Ethernet device registered\n");
+out:
+ return rc;
+
+err_unmap_3:
+ pci_iounmap(pdev, ioaddr);
+err_release_regions_2:
+ pci_release_regions(pdev);
+err_free_dev_1:
+ free_netdev(dev);
+err_disable_0:
+ pci_disable_device(pdev);
+ goto out;
+}
+
+static struct pci_driver ipg_pci_driver = {
+ .name = IPG_DRIVER_NAME,
+ .id_table = ipg_pci_tbl,
+ .probe = ipg_probe,
+ .remove = __devexit_p(ipg_remove),
+};
+
+static int __init ipg_init_module(void)
+{
+ return pci_register_driver(&ipg_pci_driver);
+}
+
+static void __exit ipg_exit_module(void)
+{
+ pci_unregister_driver(&ipg_pci_driver);
+}
+
+module_init(ipg_init_module);
+module_exit(ipg_exit_module);
diff --git a/drivers/net/ethernet/icplus/ipg.h b/drivers/net/ethernet/icplus/ipg.h
new file mode 100644
index 000000000000..6ce027355fcf
--- /dev/null
+++ b/drivers/net/ethernet/icplus/ipg.h
@@ -0,0 +1,749 @@
+/*
+ * Include file for Gigabit Ethernet device driver for Network
+ * Interface Cards (NICs) utilizing the Tamarack Microelectronics
+ * Inc. IPG Gigabit or Triple Speed Ethernet Media Access
+ * Controller.
+ */
+#ifndef __LINUX_IPG_H
+#define __LINUX_IPG_H
+
+#include <linux/module.h>
+
+#include <linux/kernel.h>
+#include <linux/pci.h>
+#include <linux/ioport.h>
+#include <linux/errno.h>
+#include <asm/io.h>
+#include <linux/delay.h>
+#include <linux/types.h>
+#include <linux/netdevice.h>
+#include <linux/etherdevice.h>
+#include <linux/init.h>
+#include <linux/skbuff.h>
+#include <asm/bitops.h>
+
+/*
+ * Constants
+ */
+
+/* GMII based PHY IDs */
+#define NS 0x2000
+#define MARVELL 0x0141
+#define ICPLUS_PHY 0x243
+
+/* NIC Physical Layer Device MII register fields. */
+#define MII_PHY_SELECTOR_IEEE8023 0x0001
+#define MII_PHY_TECHABILITYFIELD 0x1FE0
+
+/* GMII_PHY_1000 need to set to prefer master */
+#define GMII_PHY_1000BASETCONTROL_PreferMaster 0x0400
+
+/* NIC Physical Layer Device GMII constants. */
+#define GMII_PREAMBLE 0xFFFFFFFF
+#define GMII_ST 0x1
+#define GMII_READ 0x2
+#define GMII_WRITE 0x1
+#define GMII_TA_READ_MASK 0x1
+#define GMII_TA_WRITE 0x2
+
+/* I/O register offsets. */
+enum ipg_regs {
+ DMA_CTRL = 0x00,
+ RX_DMA_STATUS = 0x08, /* Unused + reserved */
+ TFD_LIST_PTR_0 = 0x10,
+ TFD_LIST_PTR_1 = 0x14,
+ TX_DMA_BURST_THRESH = 0x18,
+ TX_DMA_URGENT_THRESH = 0x19,
+ TX_DMA_POLL_PERIOD = 0x1a,
+ RFD_LIST_PTR_0 = 0x1c,
+ RFD_LIST_PTR_1 = 0x20,
+ RX_DMA_BURST_THRESH = 0x24,
+ RX_DMA_URGENT_THRESH = 0x25,
+ RX_DMA_POLL_PERIOD = 0x26,
+ DEBUG_CTRL = 0x2c,
+ ASIC_CTRL = 0x30,
+ FIFO_CTRL = 0x38, /* Unused */
+ FLOW_OFF_THRESH = 0x3c,
+ FLOW_ON_THRESH = 0x3e,
+ EEPROM_DATA = 0x48,
+ EEPROM_CTRL = 0x4a,
+ EXPROM_ADDR = 0x4c, /* Unused */
+ EXPROM_DATA = 0x50, /* Unused */
+ WAKE_EVENT = 0x51, /* Unused */
+ COUNTDOWN = 0x54, /* Unused */
+ INT_STATUS_ACK = 0x5a,
+ INT_ENABLE = 0x5c,
+ INT_STATUS = 0x5e, /* Unused */
+ TX_STATUS = 0x60,
+ MAC_CTRL = 0x6c,
+ VLAN_TAG = 0x70, /* Unused */
+ PHY_SET = 0x75,
+ PHY_CTRL = 0x76,
+ STATION_ADDRESS_0 = 0x78,
+ STATION_ADDRESS_1 = 0x7a,
+ STATION_ADDRESS_2 = 0x7c,
+ MAX_FRAME_SIZE = 0x86,
+ RECEIVE_MODE = 0x88,
+ HASHTABLE_0 = 0x8c,
+ HASHTABLE_1 = 0x90,
+ RMON_STATISTICS_MASK = 0x98,
+ STATISTICS_MASK = 0x9c,
+ RX_JUMBO_FRAMES = 0xbc, /* Unused */
+ TCP_CHECKSUM_ERRORS = 0xc0, /* Unused */
+ IP_CHECKSUM_ERRORS = 0xc2, /* Unused */
+ UDP_CHECKSUM_ERRORS = 0xc4, /* Unused */
+ TX_JUMBO_FRAMES = 0xf4 /* Unused */
+};
+
+/* Ethernet MIB statistic register offsets. */
+#define IPG_OCTETRCVOK 0xA8
+#define IPG_MCSTOCTETRCVDOK 0xAC
+#define IPG_BCSTOCTETRCVOK 0xB0
+#define IPG_FRAMESRCVDOK 0xB4
+#define IPG_MCSTFRAMESRCVDOK 0xB8
+#define IPG_BCSTFRAMESRCVDOK 0xBE
+#define IPG_MACCONTROLFRAMESRCVD 0xC6
+#define IPG_FRAMETOOLONGERRRORS 0xC8
+#define IPG_INRANGELENGTHERRORS 0xCA
+#define IPG_FRAMECHECKSEQERRORS 0xCC
+#define IPG_FRAMESLOSTRXERRORS 0xCE
+#define IPG_OCTETXMTOK 0xD0
+#define IPG_MCSTOCTETXMTOK 0xD4
+#define IPG_BCSTOCTETXMTOK 0xD8
+#define IPG_FRAMESXMTDOK 0xDC
+#define IPG_MCSTFRAMESXMTDOK 0xE0
+#define IPG_FRAMESWDEFERREDXMT 0xE4
+#define IPG_LATECOLLISIONS 0xE8
+#define IPG_MULTICOLFRAMES 0xEC
+#define IPG_SINGLECOLFRAMES 0xF0
+#define IPG_BCSTFRAMESXMTDOK 0xF6
+#define IPG_CARRIERSENSEERRORS 0xF8
+#define IPG_MACCONTROLFRAMESXMTDOK 0xFA
+#define IPG_FRAMESABORTXSCOLLS 0xFC
+#define IPG_FRAMESWEXDEFERRAL 0xFE
+
+/* RMON statistic register offsets. */
+#define IPG_ETHERSTATSCOLLISIONS 0x100
+#define IPG_ETHERSTATSOCTETSTRANSMIT 0x104
+#define IPG_ETHERSTATSPKTSTRANSMIT 0x108
+#define IPG_ETHERSTATSPKTS64OCTESTSTRANSMIT 0x10C
+#define IPG_ETHERSTATSPKTS65TO127OCTESTSTRANSMIT 0x110
+#define IPG_ETHERSTATSPKTS128TO255OCTESTSTRANSMIT 0x114
+#define IPG_ETHERSTATSPKTS256TO511OCTESTSTRANSMIT 0x118
+#define IPG_ETHERSTATSPKTS512TO1023OCTESTSTRANSMIT 0x11C
+#define IPG_ETHERSTATSPKTS1024TO1518OCTESTSTRANSMIT 0x120
+#define IPG_ETHERSTATSCRCALIGNERRORS 0x124
+#define IPG_ETHERSTATSUNDERSIZEPKTS 0x128
+#define IPG_ETHERSTATSFRAGMENTS 0x12C
+#define IPG_ETHERSTATSJABBERS 0x130
+#define IPG_ETHERSTATSOCTETS 0x134
+#define IPG_ETHERSTATSPKTS 0x138
+#define IPG_ETHERSTATSPKTS64OCTESTS 0x13C
+#define IPG_ETHERSTATSPKTS65TO127OCTESTS 0x140
+#define IPG_ETHERSTATSPKTS128TO255OCTESTS 0x144
+#define IPG_ETHERSTATSPKTS256TO511OCTESTS 0x148
+#define IPG_ETHERSTATSPKTS512TO1023OCTESTS 0x14C
+#define IPG_ETHERSTATSPKTS1024TO1518OCTESTS 0x150
+
+/* RMON statistic register equivalents. */
+#define IPG_ETHERSTATSMULTICASTPKTSTRANSMIT 0xE0
+#define IPG_ETHERSTATSBROADCASTPKTSTRANSMIT 0xF6
+#define IPG_ETHERSTATSMULTICASTPKTS 0xB8
+#define IPG_ETHERSTATSBROADCASTPKTS 0xBE
+#define IPG_ETHERSTATSOVERSIZEPKTS 0xC8
+#define IPG_ETHERSTATSDROPEVENTS 0xCE
+
+/* Serial EEPROM offsets */
+#define IPG_EEPROM_CONFIGPARAM 0x00
+#define IPG_EEPROM_ASICCTRL 0x01
+#define IPG_EEPROM_SUBSYSTEMVENDORID 0x02
+#define IPG_EEPROM_SUBSYSTEMID 0x03
+#define IPG_EEPROM_STATIONADDRESS0 0x10
+#define IPG_EEPROM_STATIONADDRESS1 0x11
+#define IPG_EEPROM_STATIONADDRESS2 0x12
+
+/* Register & data structure bit masks */
+
+/* PCI register masks. */
+
+/* IOBaseAddress */
+#define IPG_PIB_RSVD_MASK 0xFFFFFE01
+#define IPG_PIB_IOBASEADDRESS 0xFFFFFF00
+#define IPG_PIB_IOBASEADDRIND 0x00000001
+
+/* MemBaseAddress */
+#define IPG_PMB_RSVD_MASK 0xFFFFFE07
+#define IPG_PMB_MEMBASEADDRIND 0x00000001
+#define IPG_PMB_MEMMAPTYPE 0x00000006
+#define IPG_PMB_MEMMAPTYPE0 0x00000002
+#define IPG_PMB_MEMMAPTYPE1 0x00000004
+#define IPG_PMB_MEMBASEADDRESS 0xFFFFFE00
+
+/* ConfigStatus */
+#define IPG_CS_RSVD_MASK 0xFFB0
+#define IPG_CS_CAPABILITIES 0x0010
+#define IPG_CS_66MHZCAPABLE 0x0020
+#define IPG_CS_FASTBACK2BACK 0x0080
+#define IPG_CS_DATAPARITYREPORTED 0x0100
+#define IPG_CS_DEVSELTIMING 0x0600
+#define IPG_CS_SIGNALEDTARGETABORT 0x0800
+#define IPG_CS_RECEIVEDTARGETABORT 0x1000
+#define IPG_CS_RECEIVEDMASTERABORT 0x2000
+#define IPG_CS_SIGNALEDSYSTEMERROR 0x4000
+#define IPG_CS_DETECTEDPARITYERROR 0x8000
+
+/* TFD data structure masks. */
+
+/* TFDList, TFC */
+#define IPG_TFC_RSVD_MASK 0x0000FFFF9FFFFFFF
+#define IPG_TFC_FRAMEID 0x000000000000FFFF
+#define IPG_TFC_WORDALIGN 0x0000000000030000
+#define IPG_TFC_WORDALIGNTODWORD 0x0000000000000000
+#define IPG_TFC_WORDALIGNTOWORD 0x0000000000020000
+#define IPG_TFC_WORDALIGNDISABLED 0x0000000000030000
+#define IPG_TFC_TCPCHECKSUMENABLE 0x0000000000040000
+#define IPG_TFC_UDPCHECKSUMENABLE 0x0000000000080000
+#define IPG_TFC_IPCHECKSUMENABLE 0x0000000000100000
+#define IPG_TFC_FCSAPPENDDISABLE 0x0000000000200000
+#define IPG_TFC_TXINDICATE 0x0000000000400000
+#define IPG_TFC_TXDMAINDICATE 0x0000000000800000
+#define IPG_TFC_FRAGCOUNT 0x000000000F000000
+#define IPG_TFC_VLANTAGINSERT 0x0000000010000000
+#define IPG_TFC_TFDDONE 0x0000000080000000
+#define IPG_TFC_VID 0x00000FFF00000000
+#define IPG_TFC_CFI 0x0000100000000000
+#define IPG_TFC_USERPRIORITY 0x0000E00000000000
+
+/* TFDList, FragInfo */
+#define IPG_TFI_RSVD_MASK 0xFFFF00FFFFFFFFFF
+#define IPG_TFI_FRAGADDR 0x000000FFFFFFFFFF
+#define IPG_TFI_FRAGLEN 0xFFFF000000000000LL
+
+/* RFD data structure masks. */
+
+/* RFDList, RFS */
+#define IPG_RFS_RSVD_MASK 0x0000FFFFFFFFFFFF
+#define IPG_RFS_RXFRAMELEN 0x000000000000FFFF
+#define IPG_RFS_RXFIFOOVERRUN 0x0000000000010000
+#define IPG_RFS_RXRUNTFRAME 0x0000000000020000
+#define IPG_RFS_RXALIGNMENTERROR 0x0000000000040000
+#define IPG_RFS_RXFCSERROR 0x0000000000080000
+#define IPG_RFS_RXOVERSIZEDFRAME 0x0000000000100000
+#define IPG_RFS_RXLENGTHERROR 0x0000000000200000
+#define IPG_RFS_VLANDETECTED 0x0000000000400000
+#define IPG_RFS_TCPDETECTED 0x0000000000800000
+#define IPG_RFS_TCPERROR 0x0000000001000000
+#define IPG_RFS_UDPDETECTED 0x0000000002000000
+#define IPG_RFS_UDPERROR 0x0000000004000000
+#define IPG_RFS_IPDETECTED 0x0000000008000000
+#define IPG_RFS_IPERROR 0x0000000010000000
+#define IPG_RFS_FRAMESTART 0x0000000020000000
+#define IPG_RFS_FRAMEEND 0x0000000040000000
+#define IPG_RFS_RFDDONE 0x0000000080000000
+#define IPG_RFS_TCI 0x0000FFFF00000000
+
+/* RFDList, FragInfo */
+#define IPG_RFI_RSVD_MASK 0xFFFF00FFFFFFFFFF
+#define IPG_RFI_FRAGADDR 0x000000FFFFFFFFFF
+#define IPG_RFI_FRAGLEN 0xFFFF000000000000LL
+
+/* I/O Register masks. */
+
+/* RMON Statistics Mask */
+#define IPG_RZ_ALL 0x0FFFFFFF
+
+/* Statistics Mask */
+#define IPG_SM_ALL 0x0FFFFFFF
+#define IPG_SM_OCTETRCVOK_FRAMESRCVDOK 0x00000001
+#define IPG_SM_MCSTOCTETRCVDOK_MCSTFRAMESRCVDOK 0x00000002
+#define IPG_SM_BCSTOCTETRCVDOK_BCSTFRAMESRCVDOK 0x00000004
+#define IPG_SM_RXJUMBOFRAMES 0x00000008
+#define IPG_SM_TCPCHECKSUMERRORS 0x00000010
+#define IPG_SM_IPCHECKSUMERRORS 0x00000020
+#define IPG_SM_UDPCHECKSUMERRORS 0x00000040
+#define IPG_SM_MACCONTROLFRAMESRCVD 0x00000080
+#define IPG_SM_FRAMESTOOLONGERRORS 0x00000100
+#define IPG_SM_INRANGELENGTHERRORS 0x00000200
+#define IPG_SM_FRAMECHECKSEQERRORS 0x00000400
+#define IPG_SM_FRAMESLOSTRXERRORS 0x00000800
+#define IPG_SM_OCTETXMTOK_FRAMESXMTOK 0x00001000
+#define IPG_SM_MCSTOCTETXMTOK_MCSTFRAMESXMTDOK 0x00002000
+#define IPG_SM_BCSTOCTETXMTOK_BCSTFRAMESXMTDOK 0x00004000
+#define IPG_SM_FRAMESWDEFERREDXMT 0x00008000
+#define IPG_SM_LATECOLLISIONS 0x00010000
+#define IPG_SM_MULTICOLFRAMES 0x00020000
+#define IPG_SM_SINGLECOLFRAMES 0x00040000
+#define IPG_SM_TXJUMBOFRAMES 0x00080000
+#define IPG_SM_CARRIERSENSEERRORS 0x00100000
+#define IPG_SM_MACCONTROLFRAMESXMTD 0x00200000
+#define IPG_SM_FRAMESABORTXSCOLLS 0x00400000
+#define IPG_SM_FRAMESWEXDEFERAL 0x00800000
+
+/* Countdown */
+#define IPG_CD_RSVD_MASK 0x0700FFFF
+#define IPG_CD_COUNT 0x0000FFFF
+#define IPG_CD_COUNTDOWNSPEED 0x01000000
+#define IPG_CD_COUNTDOWNMODE 0x02000000
+#define IPG_CD_COUNTINTENABLED 0x04000000
+
+/* TxDMABurstThresh */
+#define IPG_TB_RSVD_MASK 0xFF
+
+/* TxDMAUrgentThresh */
+#define IPG_TU_RSVD_MASK 0xFF
+
+/* TxDMAPollPeriod */
+#define IPG_TP_RSVD_MASK 0xFF
+
+/* RxDMAUrgentThresh */
+#define IPG_RU_RSVD_MASK 0xFF
+
+/* RxDMAPollPeriod */
+#define IPG_RP_RSVD_MASK 0xFF
+
+/* ReceiveMode */
+#define IPG_RM_RSVD_MASK 0x3F
+#define IPG_RM_RECEIVEUNICAST 0x01
+#define IPG_RM_RECEIVEMULTICAST 0x02
+#define IPG_RM_RECEIVEBROADCAST 0x04
+#define IPG_RM_RECEIVEALLFRAMES 0x08
+#define IPG_RM_RECEIVEMULTICASTHASH 0x10
+#define IPG_RM_RECEIVEIPMULTICAST 0x20
+
+/* PhySet */
+#define IPG_PS_MEM_LENB9B 0x01
+#define IPG_PS_MEM_LEN9 0x02
+#define IPG_PS_NON_COMPDET 0x04
+
+/* PhyCtrl */
+#define IPG_PC_RSVD_MASK 0xFF
+#define IPG_PC_MGMTCLK_LO 0x00
+#define IPG_PC_MGMTCLK_HI 0x01
+#define IPG_PC_MGMTCLK 0x01
+#define IPG_PC_MGMTDATA 0x02
+#define IPG_PC_MGMTDIR 0x04
+#define IPG_PC_DUPLEX_POLARITY 0x08
+#define IPG_PC_DUPLEX_STATUS 0x10
+#define IPG_PC_LINK_POLARITY 0x20
+#define IPG_PC_LINK_SPEED 0xC0
+#define IPG_PC_LINK_SPEED_10MBPS 0x40
+#define IPG_PC_LINK_SPEED_100MBPS 0x80
+#define IPG_PC_LINK_SPEED_1000MBPS 0xC0
+
+/* DMACtrl */
+#define IPG_DC_RSVD_MASK 0xC07D9818
+#define IPG_DC_RX_DMA_COMPLETE 0x00000008
+#define IPG_DC_RX_DMA_POLL_NOW 0x00000010
+#define IPG_DC_TX_DMA_COMPLETE 0x00000800
+#define IPG_DC_TX_DMA_POLL_NOW 0x00001000
+#define IPG_DC_TX_DMA_IN_PROG 0x00008000
+#define IPG_DC_RX_EARLY_DISABLE 0x00010000
+#define IPG_DC_MWI_DISABLE 0x00040000
+#define IPG_DC_TX_WRITE_BACK_DISABLE 0x00080000
+#define IPG_DC_TX_BURST_LIMIT 0x00700000
+#define IPG_DC_TARGET_ABORT 0x40000000
+#define IPG_DC_MASTER_ABORT 0x80000000
+
+/* ASICCtrl */
+#define IPG_AC_RSVD_MASK 0x07FFEFF2
+#define IPG_AC_EXP_ROM_SIZE 0x00000002
+#define IPG_AC_PHY_SPEED10 0x00000010
+#define IPG_AC_PHY_SPEED100 0x00000020
+#define IPG_AC_PHY_SPEED1000 0x00000040
+#define IPG_AC_PHY_MEDIA 0x00000080
+#define IPG_AC_FORCED_CFG 0x00000700
+#define IPG_AC_D3RESETDISABLE 0x00000800
+#define IPG_AC_SPEED_UP_MODE 0x00002000
+#define IPG_AC_LED_MODE 0x00004000
+#define IPG_AC_RST_OUT_POLARITY 0x00008000
+#define IPG_AC_GLOBAL_RESET 0x00010000
+#define IPG_AC_RX_RESET 0x00020000
+#define IPG_AC_TX_RESET 0x00040000
+#define IPG_AC_DMA 0x00080000
+#define IPG_AC_FIFO 0x00100000
+#define IPG_AC_NETWORK 0x00200000
+#define IPG_AC_HOST 0x00400000
+#define IPG_AC_AUTO_INIT 0x00800000
+#define IPG_AC_RST_OUT 0x01000000
+#define IPG_AC_INT_REQUEST 0x02000000
+#define IPG_AC_RESET_BUSY 0x04000000
+#define IPG_AC_LED_SPEED 0x08000000
+#define IPG_AC_LED_MODE_BIT_1 0x20000000
+
+/* EepromCtrl */
+#define IPG_EC_RSVD_MASK 0x83FF
+#define IPG_EC_EEPROM_ADDR 0x00FF
+#define IPG_EC_EEPROM_OPCODE 0x0300
+#define IPG_EC_EEPROM_SUBCOMMAD 0x0000
+#define IPG_EC_EEPROM_WRITEOPCODE 0x0100
+#define IPG_EC_EEPROM_READOPCODE 0x0200
+#define IPG_EC_EEPROM_ERASEOPCODE 0x0300
+#define IPG_EC_EEPROM_BUSY 0x8000
+
+/* FIFOCtrl */
+#define IPG_FC_RSVD_MASK 0xC001
+#define IPG_FC_RAM_TEST_MODE 0x0001
+#define IPG_FC_TRANSMITTING 0x4000
+#define IPG_FC_RECEIVING 0x8000
+
+/* TxStatus */
+#define IPG_TS_RSVD_MASK 0xFFFF00DD
+#define IPG_TS_TX_ERROR 0x00000001
+#define IPG_TS_LATE_COLLISION 0x00000004
+#define IPG_TS_TX_MAX_COLL 0x00000008
+#define IPG_TS_TX_UNDERRUN 0x00000010
+#define IPG_TS_TX_IND_REQD 0x00000040
+#define IPG_TS_TX_COMPLETE 0x00000080
+#define IPG_TS_TX_FRAMEID 0xFFFF0000
+
+/* WakeEvent */
+#define IPG_WE_WAKE_PKT_ENABLE 0x01
+#define IPG_WE_MAGIC_PKT_ENABLE 0x02
+#define IPG_WE_LINK_EVT_ENABLE 0x04
+#define IPG_WE_WAKE_POLARITY 0x08
+#define IPG_WE_WAKE_PKT_EVT 0x10
+#define IPG_WE_MAGIC_PKT_EVT 0x20
+#define IPG_WE_LINK_EVT 0x40
+#define IPG_WE_WOL_ENABLE 0x80
+
+/* IntEnable */
+#define IPG_IE_RSVD_MASK 0x1FFE
+#define IPG_IE_HOST_ERROR 0x0002
+#define IPG_IE_TX_COMPLETE 0x0004
+#define IPG_IE_MAC_CTRL_FRAME 0x0008
+#define IPG_IE_RX_COMPLETE 0x0010
+#define IPG_IE_RX_EARLY 0x0020
+#define IPG_IE_INT_REQUESTED 0x0040
+#define IPG_IE_UPDATE_STATS 0x0080
+#define IPG_IE_LINK_EVENT 0x0100
+#define IPG_IE_TX_DMA_COMPLETE 0x0200
+#define IPG_IE_RX_DMA_COMPLETE 0x0400
+#define IPG_IE_RFD_LIST_END 0x0800
+#define IPG_IE_RX_DMA_PRIORITY 0x1000
+
+/* IntStatus */
+#define IPG_IS_RSVD_MASK 0x1FFF
+#define IPG_IS_INTERRUPT_STATUS 0x0001
+#define IPG_IS_HOST_ERROR 0x0002
+#define IPG_IS_TX_COMPLETE 0x0004
+#define IPG_IS_MAC_CTRL_FRAME 0x0008
+#define IPG_IS_RX_COMPLETE 0x0010
+#define IPG_IS_RX_EARLY 0x0020
+#define IPG_IS_INT_REQUESTED 0x0040
+#define IPG_IS_UPDATE_STATS 0x0080
+#define IPG_IS_LINK_EVENT 0x0100
+#define IPG_IS_TX_DMA_COMPLETE 0x0200
+#define IPG_IS_RX_DMA_COMPLETE 0x0400
+#define IPG_IS_RFD_LIST_END 0x0800
+#define IPG_IS_RX_DMA_PRIORITY 0x1000
+
+/* MACCtrl */
+#define IPG_MC_RSVD_MASK 0x7FE33FA3
+#define IPG_MC_IFS_SELECT 0x00000003
+#define IPG_MC_IFS_4352BIT 0x00000003
+#define IPG_MC_IFS_1792BIT 0x00000002
+#define IPG_MC_IFS_1024BIT 0x00000001
+#define IPG_MC_IFS_96BIT 0x00000000
+#define IPG_MC_DUPLEX_SELECT 0x00000020
+#define IPG_MC_DUPLEX_SELECT_FD 0x00000020
+#define IPG_MC_DUPLEX_SELECT_HD 0x00000000
+#define IPG_MC_TX_FLOW_CONTROL_ENABLE 0x00000080
+#define IPG_MC_RX_FLOW_CONTROL_ENABLE 0x00000100
+#define IPG_MC_RCV_FCS 0x00000200
+#define IPG_MC_FIFO_LOOPBACK 0x00000400
+#define IPG_MC_MAC_LOOPBACK 0x00000800
+#define IPG_MC_AUTO_VLAN_TAGGING 0x00001000
+#define IPG_MC_AUTO_VLAN_UNTAGGING 0x00002000
+#define IPG_MC_COLLISION_DETECT 0x00010000
+#define IPG_MC_CARRIER_SENSE 0x00020000
+#define IPG_MC_STATISTICS_ENABLE 0x00200000
+#define IPG_MC_STATISTICS_DISABLE 0x00400000
+#define IPG_MC_STATISTICS_ENABLED 0x00800000
+#define IPG_MC_TX_ENABLE 0x01000000
+#define IPG_MC_TX_DISABLE 0x02000000
+#define IPG_MC_TX_ENABLED 0x04000000
+#define IPG_MC_RX_ENABLE 0x08000000
+#define IPG_MC_RX_DISABLE 0x10000000
+#define IPG_MC_RX_ENABLED 0x20000000
+#define IPG_MC_PAUSED 0x40000000
+
+/*
+ * Tune
+ */
+
+/* Assign IPG_APPEND_FCS_ON_TX > 0 for auto FCS append on TX. */
+#define IPG_APPEND_FCS_ON_TX 1
+
+/* Assign IPG_APPEND_FCS_ON_TX > 0 for auto FCS strip on RX. */
+#define IPG_STRIP_FCS_ON_RX 1
+
+/* Assign IPG_DROP_ON_RX_ETH_ERRORS > 0 to drop RX frames with
+ * Ethernet errors.
+ */
+#define IPG_DROP_ON_RX_ETH_ERRORS 1
+
+/* Assign IPG_INSERT_MANUAL_VLAN_TAG > 0 to insert VLAN tags manually
+ * (via TFC).
+ */
+#define IPG_INSERT_MANUAL_VLAN_TAG 0
+
+/* Assign IPG_ADD_IPCHECKSUM_ON_TX > 0 for auto IP checksum on TX. */
+#define IPG_ADD_IPCHECKSUM_ON_TX 0
+
+/* Assign IPG_ADD_TCPCHECKSUM_ON_TX > 0 for auto TCP checksum on TX.
+ * DO NOT USE FOR SILICON REVISIONS B3 AND EARLIER.
+ */
+#define IPG_ADD_TCPCHECKSUM_ON_TX 0
+
+/* Assign IPG_ADD_UDPCHECKSUM_ON_TX > 0 for auto UDP checksum on TX.
+ * DO NOT USE FOR SILICON REVISIONS B3 AND EARLIER.
+ */
+#define IPG_ADD_UDPCHECKSUM_ON_TX 0
+
+/* If inserting VLAN tags manually, assign the IPG_MANUAL_VLAN_xx
+ * constants as desired.
+ */
+#define IPG_MANUAL_VLAN_VID 0xABC
+#define IPG_MANUAL_VLAN_CFI 0x1
+#define IPG_MANUAL_VLAN_USERPRIORITY 0x5
+
+#define IPG_IO_REG_RANGE 0xFF
+#define IPG_MEM_REG_RANGE 0x154
+#define IPG_DRIVER_NAME "Sundance Technology IPG Triple-Speed Ethernet"
+#define IPG_NIC_PHY_ADDRESS 0x01
+#define IPG_DMALIST_ALIGN_PAD 0x07
+#define IPG_MULTICAST_HASHTABLE_SIZE 0x40
+
+/* Number of milliseconds to wait after issuing a software reset.
+ * 0x05 <= IPG_AC_RESETWAIT to account for proper 10Mbps operation.
+ */
+#define IPG_AC_RESETWAIT 0x05
+
+/* Number of IPG_AC_RESETWAIT timeperiods before declaring timeout. */
+#define IPG_AC_RESET_TIMEOUT 0x0A
+
+/* Minimum number of nanoseconds used to toggle MDC clock during
+ * MII/GMII register access.
+ */
+#define IPG_PC_PHYCTRLWAIT_NS 200
+
+#define IPG_TFDLIST_LENGTH 0x100
+
+/* Number of frames between TxDMAComplete interrupt.
+ * 0 < IPG_FRAMESBETWEENTXDMACOMPLETES <= IPG_TFDLIST_LENGTH
+ */
+#define IPG_FRAMESBETWEENTXDMACOMPLETES 0x1
+
+#define IPG_RFDLIST_LENGTH 0x100
+
+/* Maximum number of RFDs to process per interrupt.
+ * 1 < IPG_MAXRFDPROCESS_COUNT < IPG_RFDLIST_LENGTH
+ */
+#define IPG_MAXRFDPROCESS_COUNT 0x80
+
+/* Minimum margin between last freed RFD, and current RFD.
+ * 1 < IPG_MINUSEDRFDSTOFREE < IPG_RFDLIST_LENGTH
+ */
+#define IPG_MINUSEDRFDSTOFREE 0x80
+
+/* specify the jumbo frame maximum size
+ * per unit is 0x600 (the rx_buffer size that one RFD can carry)
+ */
+#define MAX_JUMBOSIZE 0x8 /* max is 12K */
+
+/* Key register values loaded at driver start up. */
+
+/* TXDMAPollPeriod is specified in 320ns increments.
+ *
+ * Value Time
+ * ---------------------
+ * 0x00-0x01 320ns
+ * 0x03 ~1us
+ * 0x1F ~10us
+ * 0xFF ~82us
+ */
+#define IPG_TXDMAPOLLPERIOD_VALUE 0x26
+
+/* TxDMAUrgentThresh specifies the minimum amount of
+ * data in the transmit FIFO before asserting an
+ * urgent transmit DMA request.
+ *
+ * Value Min TxFIFO occupied space before urgent TX request
+ * ---------------------------------------------------------------
+ * 0x00-0x04 128 bytes (1024 bits)
+ * 0x27 1248 bytes (~10000 bits)
+ * 0x30 1536 bytes (12288 bits)
+ * 0xFF 8192 bytes (65535 bits)
+ */
+#define IPG_TXDMAURGENTTHRESH_VALUE 0x04
+
+/* TxDMABurstThresh specifies the minimum amount of
+ * free space in the transmit FIFO before asserting an
+ * transmit DMA request.
+ *
+ * Value Min TxFIFO free space before TX request
+ * ----------------------------------------------------
+ * 0x00-0x08 256 bytes
+ * 0x30 1536 bytes
+ * 0xFF 8192 bytes
+ */
+#define IPG_TXDMABURSTTHRESH_VALUE 0x30
+
+/* RXDMAPollPeriod is specified in 320ns increments.
+ *
+ * Value Time
+ * ---------------------
+ * 0x00-0x01 320ns
+ * 0x03 ~1us
+ * 0x1F ~10us
+ * 0xFF ~82us
+ */
+#define IPG_RXDMAPOLLPERIOD_VALUE 0x01
+
+/* RxDMAUrgentThresh specifies the minimum amount of
+ * free space within the receive FIFO before asserting
+ * a urgent receive DMA request.
+ *
+ * Value Min RxFIFO free space before urgent RX request
+ * ---------------------------------------------------------------
+ * 0x00-0x04 128 bytes (1024 bits)
+ * 0x27 1248 bytes (~10000 bits)
+ * 0x30 1536 bytes (12288 bits)
+ * 0xFF 8192 bytes (65535 bits)
+ */
+#define IPG_RXDMAURGENTTHRESH_VALUE 0x30
+
+/* RxDMABurstThresh specifies the minimum amount of
+ * occupied space within the receive FIFO before asserting
+ * a receive DMA request.
+ *
+ * Value Min TxFIFO free space before TX request
+ * ----------------------------------------------------
+ * 0x00-0x08 256 bytes
+ * 0x30 1536 bytes
+ * 0xFF 8192 bytes
+ */
+#define IPG_RXDMABURSTTHRESH_VALUE 0x30
+
+/* FlowOnThresh specifies the maximum amount of occupied
+ * space in the receive FIFO before a PAUSE frame with
+ * maximum pause time transmitted.
+ *
+ * Value Max RxFIFO occupied space before PAUSE
+ * ---------------------------------------------------
+ * 0x0000 0 bytes
+ * 0x0740 29,696 bytes
+ * 0x07FF 32,752 bytes
+ */
+#define IPG_FLOWONTHRESH_VALUE 0x0740
+
+/* FlowOffThresh specifies the minimum amount of occupied
+ * space in the receive FIFO before a PAUSE frame with
+ * zero pause time is transmitted.
+ *
+ * Value Max RxFIFO occupied space before PAUSE
+ * ---------------------------------------------------
+ * 0x0000 0 bytes
+ * 0x00BF 3056 bytes
+ * 0x07FF 32,752 bytes
+ */
+#define IPG_FLOWOFFTHRESH_VALUE 0x00BF
+
+/*
+ * Miscellaneous macros.
+ */
+
+/* Macros for printing debug statements. */
+#ifdef IPG_DEBUG
+# define IPG_DEBUG_MSG(fmt, args...) \
+do { \
+ if (0) \
+ printk(KERN_DEBUG "IPG: " fmt, ##args); \
+} while (0)
+# define IPG_DDEBUG_MSG(fmt, args...) \
+ printk(KERN_DEBUG "IPG: " fmt, ##args)
+# define IPG_DUMPRFDLIST(args) ipg_dump_rfdlist(args)
+# define IPG_DUMPTFDLIST(args) ipg_dump_tfdlist(args)
+#else
+# define IPG_DEBUG_MSG(fmt, args...) \
+do { \
+ if (0) \
+ printk(KERN_DEBUG "IPG: " fmt, ##args); \
+} while (0)
+# define IPG_DDEBUG_MSG(fmt, args...) \
+do { \
+ if (0) \
+ printk(KERN_DEBUG "IPG: " fmt, ##args); \
+} while (0)
+# define IPG_DUMPRFDLIST(args)
+# define IPG_DUMPTFDLIST(args)
+#endif
+
+/*
+ * End miscellaneous macros.
+ */
+
+/* Transmit Frame Descriptor. The IPG supports 15 fragments,
+ * however Linux requires only a single fragment. Note, each
+ * TFD field is 64 bits wide.
+ */
+struct ipg_tx {
+ __le64 next_desc;
+ __le64 tfc;
+ __le64 frag_info;
+};
+
+/* Receive Frame Descriptor. Note, each RFD field is 64 bits wide.
+ */
+struct ipg_rx {
+ __le64 next_desc;
+ __le64 rfs;
+ __le64 frag_info;
+};
+
+struct ipg_jumbo {
+ int found_start;
+ int current_size;
+ struct sk_buff *skb;
+};
+
+/* Structure of IPG NIC specific data. */
+struct ipg_nic_private {
+ void __iomem *ioaddr;
+ struct ipg_tx *txd;
+ struct ipg_rx *rxd;
+ dma_addr_t txd_map;
+ dma_addr_t rxd_map;
+ struct sk_buff *tx_buff[IPG_TFDLIST_LENGTH];
+ struct sk_buff *rx_buff[IPG_RFDLIST_LENGTH];
+ unsigned int tx_current;
+ unsigned int tx_dirty;
+ unsigned int rx_current;
+ unsigned int rx_dirty;
+ bool is_jumbo;
+ struct ipg_jumbo jumbo;
+ unsigned long rxfrag_size;
+ unsigned long rxsupport_size;
+ unsigned long max_rxframe_size;
+ unsigned int rx_buf_sz;
+ struct pci_dev *pdev;
+ struct net_device *dev;
+ struct net_device_stats stats;
+ spinlock_t lock;
+ int tenmbpsmode;
+
+ u16 led_mode;
+ u16 station_addr[3]; /* Station Address in EEPROM Reg 0x10..0x12 */
+
+ struct mutex mii_mutex;
+ struct mii_if_info mii_if;
+ int reset_current_tfd;
+#ifdef IPG_DEBUG
+ int RFDlistendCount;
+ int RFDListCheckedCount;
+ int EmptyRFDListCount;
+#endif
+ struct delayed_work task;
+};
+
+#endif /* __LINUX_IPG_H */