/************************************************************************** Inter Pro 1000 for ppcboot/das-u-boot Drivers are port from Intel's Linux driver e1000-4.3.15 and from Etherboot pro 1000 driver by mrakes at vivato dot net tested on both gig copper and gig fiber boards ***************************************************************************/ /******************************************************************************* Copyright(c) 1999 - 2002 Intel Corporation. All rights reserved. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. The full GNU General Public License is included in this distribution in the file called LICENSE. Contact Information: Linux NICS <linux.nics@intel.com> Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497 *******************************************************************************/ /* * Copyright (C) Archway Digital Solutions. * * written by Chrsitopher Li <cli at arcyway dot com> or <chrisl at gnuchina dot org> * 2/9/2002 * * Copyright (C) Linux Networx. * Massive upgrade to work with the new intel gigabit NICs. * <ebiederman at lnxi dot com> */ #include "e1000.h" #if defined(CONFIG_CMD_NET) \ && defined(CONFIG_NET_MULTI) && defined(CONFIG_E1000) #define TOUT_LOOP 100000 #undef virt_to_bus #define virt_to_bus(x) ((unsigned long)x) #define bus_to_phys(devno, a) pci_mem_to_phys(devno, a) #define mdelay(n) udelay((n)*1000) #define E1000_DEFAULT_PBA 0x00000030 /* NIC specific static variables go here */ static char tx_pool[128 + 16]; static char rx_pool[128 + 16]; static char packet[2096]; static struct e1000_tx_desc *tx_base; static struct e1000_rx_desc *rx_base; static int tx_tail; static int rx_tail, rx_last; static struct pci_device_id supported[] = { {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82542}, {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82543GC_FIBER}, {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82543GC_COPPER}, {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82544EI_COPPER}, {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82544EI_FIBER}, {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82544GC_COPPER}, {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82544GC_LOM}, {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82540EM}, {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82545EM_COPPER}, {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82546EB_COPPER}, {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82545EM_FIBER}, {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82546EB_FIBER}, {PCI_VENDOR_ID_INTEL, PCI_DEVICE_ID_INTEL_82540EM_LOM}, }; /* Function forward declarations */ static int e1000_setup_link(struct eth_device *nic); static int e1000_setup_fiber_link(struct eth_device *nic); static int e1000_setup_copper_link(struct eth_device *nic); static int e1000_phy_setup_autoneg(struct e1000_hw *hw); static void e1000_config_collision_dist(struct e1000_hw *hw); static int e1000_config_mac_to_phy(struct e1000_hw *hw); static int e1000_config_fc_after_link_up(struct e1000_hw *hw); static int e1000_check_for_link(struct eth_device *nic); static int e1000_wait_autoneg(struct e1000_hw *hw); static void e1000_get_speed_and_duplex(struct e1000_hw *hw, uint16_t * speed, uint16_t * duplex); static int e1000_read_phy_reg(struct e1000_hw *hw, uint32_t reg_addr, uint16_t * phy_data); static int e1000_write_phy_reg(struct e1000_hw *hw, uint32_t reg_addr, uint16_t phy_data); static void e1000_phy_hw_reset(struct e1000_hw *hw); static int e1000_phy_reset(struct e1000_hw *hw); static int e1000_detect_gig_phy(struct e1000_hw *hw); #define E1000_WRITE_REG(a, reg, value) (writel((value), ((a)->hw_addr + E1000_##reg))) #define E1000_READ_REG(a, reg) (readl((a)->hw_addr + E1000_##reg)) #define E1000_WRITE_REG_ARRAY(a, reg, offset, value) (\ writel((value), ((a)->hw_addr + E1000_##reg + ((offset) << 2)))) #define E1000_READ_REG_ARRAY(a, reg, offset) ( \ readl((a)->hw_addr + E1000_##reg + ((offset) << 2))) #define E1000_WRITE_FLUSH(a) {uint32_t x; x = E1000_READ_REG(a, STATUS);} #ifndef CONFIG_AP1000 /* remove for warnings */ /****************************************************************************** * Raises the EEPROM's clock input. * * hw - Struct containing variables accessed by shared code * eecd - EECD's current value *****************************************************************************/ static void e1000_raise_ee_clk(struct e1000_hw *hw, uint32_t * eecd) { /* Raise the clock input to the EEPROM (by setting the SK bit), and then * wait 50 microseconds. */ *eecd = *eecd | E1000_EECD_SK; E1000_WRITE_REG(hw, EECD, *eecd); E1000_WRITE_FLUSH(hw); udelay(50); } /****************************************************************************** * Lowers the EEPROM's clock input. * * hw - Struct containing variables accessed by shared code * eecd - EECD's current value *****************************************************************************/ static void e1000_lower_ee_clk(struct e1000_hw *hw, uint32_t * eecd) { /* Lower the clock input to the EEPROM (by clearing the SK bit), and then * wait 50 microseconds. */ *eecd = *eecd & ~E1000_EECD_SK; E1000_WRITE_REG(hw, EECD, *eecd); E1000_WRITE_FLUSH(hw); udelay(50); } /****************************************************************************** * Shift data bits out to the EEPROM. * * hw - Struct containing variables accessed by shared code * data - data to send to the EEPROM * count - number of bits to shift out *****************************************************************************/ static void e1000_shift_out_ee_bits(struct e1000_hw *hw, uint16_t data, uint16_t count) { uint32_t eecd; uint32_t mask; /* We need to shift "count" bits out to the EEPROM. So, value in the * "data" parameter will be shifted out to the EEPROM one bit at a time. * In order to do this, "data" must be broken down into bits. */ mask = 0x01 << (count - 1); eecd = E1000_READ_REG(hw, EECD); eecd &= ~(E1000_EECD_DO | E1000_EECD_DI); do { /* A "1" is shifted out to the EEPROM by setting bit "DI" to a "1", * and then raising and then lowering the clock (the SK bit controls * the clock input to the EEPROM). A "0" is shifted out to the EEPROM * by setting "DI" to "0" and then raising and then lowering the clock. */ eecd &= ~E1000_EECD_DI; if (data & mask) eecd |= E1000_EECD_DI; E1000_WRITE_REG(hw, EECD, eecd); E1000_WRITE_FLUSH(hw); udelay(50); e1000_raise_ee_clk(hw, &eecd); e1000_lower_ee_clk(hw, &eecd); mask = mask >> 1; } while (mask); /* We leave the "DI" bit set to "0" when we leave this routine. */ eecd &= ~E1000_EECD_DI; E1000_WRITE_REG(hw, EECD, eecd); } /****************************************************************************** * Shift data bits in from the EEPROM * * hw - Struct containing variables accessed by shared code *****************************************************************************/ static uint16_t e1000_shift_in_ee_bits(struct e1000_hw *hw) { uint32_t eecd; uint32_t i; uint16_t data; /* In order to read a register from the EEPROM, we need to shift 16 bits * in from the EEPROM. Bits are "shifted in" by raising the clock input to * the EEPROM (setting the SK bit), and then reading the value of the "DO" * bit. During this "shifting in" process the "DI" bit should always be * clear.. */ eecd = E1000_READ_REG(hw, EECD); eecd &= ~(E1000_EECD_DO | E1000_EECD_DI); data = 0; for (i = 0; i < 16; i++) { data = data << 1; e1000_raise_ee_clk(hw, &eecd); eecd = E1000_READ_REG(hw, EECD); eecd &= ~(E1000_EECD_DI); if (eecd & E1000_EECD_DO) data |= 1; e1000_lower_ee_clk(hw, &eecd); } return data; } /****************************************************************************** * Prepares EEPROM for access * * hw - Struct containing variables accessed by shared code * * Lowers EEPROM clock. Clears input pin. Sets the chip select pin. This * function should be called before issuing a command to the EEPROM. *****************************************************************************/ static void e1000_setup_eeprom(struct e1000_hw *hw) { uint32_t eecd; eecd = E1000_READ_REG(hw, EECD); /* Clear SK and DI */ eecd &= ~(E1000_EECD_SK | E1000_EECD_DI); E1000_WRITE_REG(hw, EECD, eecd); /* Set CS */ eecd |= E1000_EECD_CS; E1000_WRITE_REG(hw, EECD, eecd); } /****************************************************************************** * Returns EEPROM to a "standby" state * * hw - Struct containing variables accessed by shared code *****************************************************************************/ static void e1000_standby_eeprom(struct e1000_hw *hw) { uint32_t eecd; eecd = E1000_READ_REG(hw, EECD); /* Deselct EEPROM */ eecd &= ~(E1000_EECD_CS | E1000_EECD_SK); E1000_WRITE_REG(hw, EECD, eecd); E1000_WRITE_FLUSH(hw); udelay(50); /* Clock high */ eecd |= E1000_EECD_SK; E1000_WRITE_REG(hw, EECD, eecd); E1000_WRITE_FLUSH(hw); udelay(50); /* Select EEPROM */ eecd |= E1000_EECD_CS; E1000_WRITE_REG(hw, EECD, eecd); E1000_WRITE_FLUSH(hw); udelay(50); /* Clock low */ eecd &= ~E1000_EECD_SK; E1000_WRITE_REG(hw, EECD, eecd); E1000_WRITE_FLUSH(hw); udelay(50); } /****************************************************************************** * Reads a 16 bit word from the EEPROM. * * hw - Struct containing variables accessed by shared code * offset - offset of word in the EEPROM to read * data - word read from the EEPROM *****************************************************************************/ static int e1000_read_eeprom(struct e1000_hw *hw, uint16_t offset, uint16_t * data) { uint32_t eecd; uint32_t i = 0; int large_eeprom = FALSE; /* Request EEPROM Access */ if (hw->mac_type > e1000_82544) { eecd = E1000_READ_REG(hw, EECD); if (eecd & E1000_EECD_SIZE) large_eeprom = TRUE; eecd |= E1000_EECD_REQ; E1000_WRITE_REG(hw, EECD, eecd); eecd = E1000_READ_REG(hw, EECD); while ((!(eecd & E1000_EECD_GNT)) && (i < 100)) { i++; udelay(10); eecd = E1000_READ_REG(hw, EECD); } if (!(eecd & E1000_EECD_GNT)) { eecd &= ~E1000_EECD_REQ; E1000_WRITE_REG(hw, EECD, eecd); DEBUGOUT("Could not acquire EEPROM grant\n"); return -E1000_ERR_EEPROM; } } /* Prepare the EEPROM for reading */ e1000_setup_eeprom(hw); /* Send the READ command (opcode + addr) */ e1000_shift_out_ee_bits(hw, EEPROM_READ_OPCODE, 3); e1000_shift_out_ee_bits(hw, offset, (large_eeprom) ? 8 : 6); /* Read the data */ *data = e1000_shift_in_ee_bits(hw); /* End this read operation */ e1000_standby_eeprom(hw); /* Stop requesting EEPROM access */ if (hw->mac_type > e1000_82544) { eecd = E1000_READ_REG(hw, EECD); eecd &= ~E1000_EECD_REQ; E1000_WRITE_REG(hw, EECD, eecd); } return 0; } #if 0 static void e1000_eeprom_cleanup(struct e1000_hw *hw) { uint32_t eecd; eecd = E1000_READ_REG(hw, EECD); eecd &= ~(E1000_EECD_CS | E1000_EECD_DI); E1000_WRITE_REG(hw, EECD, eecd); e1000_raise_ee_clk(hw, &eecd); e1000_lower_ee_clk(hw, &eecd); } static uint16_t e1000_wait_eeprom_done(struct e1000_hw *hw) { uint32_t eecd; uint32_t i; e1000_standby_eeprom(hw); for (i = 0; i < 200; i++) { eecd = E1000_READ_REG(hw, EECD); if (eecd & E1000_EECD_DO) return (TRUE); udelay(5); } return (FALSE); } static int e1000_write_eeprom(struct e1000_hw *hw, uint16_t Reg, uint16_t Data) { uint32_t eecd; int large_eeprom = FALSE; int i = 0; /* Request EEPROM Access */ if (hw->mac_type > e1000_82544) { eecd = E1000_READ_REG(hw, EECD); if (eecd & E1000_EECD_SIZE) large_eeprom = TRUE; eecd |= E1000_EECD_REQ; E1000_WRITE_REG(hw, EECD, eecd); eecd = E1000_READ_REG(hw, EECD); while ((!(eecd & E1000_EECD_GNT)) && (i < 100)) { i++; udelay(5); eecd = E1000_READ_REG(hw, EECD); } if (!(eecd & E1000_EECD_GNT)) { eecd &= ~E1000_EECD_REQ; E1000_WRITE_REG(hw, EECD, eecd); DEBUGOUT("Could not acquire EEPROM grant\n"); return FALSE; } } e1000_setup_eeprom(hw); e1000_shift_out_ee_bits(hw, EEPROM_EWEN_OPCODE, 5); e1000_shift_out_ee_bits(hw, Reg, (large_eeprom) ? 6 : 4); e1000_standby_eeprom(hw); e1000_shift_out_ee_bits(hw, EEPROM_WRITE_OPCODE, 3); e1000_shift_out_ee_bits(hw, Reg, (large_eeprom) ? 8 : 6); e1000_shift_out_ee_bits(hw, Data, 16); if (!e1000_wait_eeprom_done(hw)) { return FALSE; } e1000_shift_out_ee_bits(hw, EEPROM_EWDS_OPCODE, 5); e1000_shift_out_ee_bits(hw, Reg, (large_eeprom) ? 6 : 4); e1000_eeprom_cleanup(hw); /* Stop requesting EEPROM access */ if (hw->mac_type > e1000_82544) { eecd = E1000_READ_REG(hw, EECD); eecd &= ~E1000_EECD_REQ; E1000_WRITE_REG(hw, EECD, eecd); } i = 0; eecd = E1000_READ_REG(hw, EECD); while (((eecd & E1000_EECD_GNT)) && (i < 500)) { i++; udelay(10); eecd = E1000_READ_REG(hw, EECD); } if ((eecd & E1000_EECD_GNT)) { DEBUGOUT("Could not release EEPROM grant\n"); } return TRUE; } #endif /****************************************************************************** * Verifies that the EEPROM has a valid checksum * * hw - Struct containing variables accessed by shared code * * Reads the first 64 16 bit words of the EEPROM and sums the values read. * If the the sum of the 64 16 bit words is 0xBABA, the EEPROM's checksum is * valid. *****************************************************************************/ static int e1000_validate_eeprom_checksum(struct eth_device *nic) { struct e1000_hw *hw = nic->priv; uint16_t checksum = 0; uint16_t i, eeprom_data; DEBUGFUNC(); for (i = 0; i < (EEPROM_CHECKSUM_REG + 1); i++) { if (e1000_read_eeprom(hw, i, &eeprom_data) < 0) { DEBUGOUT("EEPROM Read Error\n"); return -E1000_ERR_EEPROM; } checksum += eeprom_data; } if (checksum == (uint16_t) EEPROM_SUM) { return 0; } else { DEBUGOUT("EEPROM Checksum Invalid\n"); return -E1000_ERR_EEPROM; } } #endif /* #ifndef CONFIG_AP1000 */ /****************************************************************************** * Reads the adapter's MAC address from the EEPROM and inverts the LSB for the * second function of dual function devices * * nic - Struct containing variables accessed by shared code *****************************************************************************/ static int e1000_read_mac_addr(struct eth_device *nic) { #ifndef CONFIG_AP1000 struct e1000_hw *hw = nic->priv; uint16_t offset; uint16_t eeprom_data; int i; DEBUGFUNC(); for (i = 0; i < NODE_ADDRESS_SIZE; i += 2) { offset = i >> 1; if (e1000_read_eeprom(hw, offset, &eeprom_data) < 0) { DEBUGOUT("EEPROM Read Error\n"); return -E1000_ERR_EEPROM; } nic->enetaddr[i] = eeprom_data & 0xff; nic->enetaddr[i + 1] = (eeprom_data >> 8) & 0xff; } if ((hw->mac_type == e1000_82546) && (E1000_READ_REG(hw, STATUS) & E1000_STATUS_FUNC_1)) { /* Invert the last bit if this is the second device */ nic->enetaddr[5] += 1; } #else /* * The AP1000's e1000 has no eeprom; the MAC address is stored in the * environment variables. Currently this does not support the addition * of a PMC e1000 card, which is certainly a possibility, so this should * be updated to properly use the env variable only for the onboard e1000 */ int ii; char *s, *e; DEBUGFUNC(); s = getenv ("ethaddr"); if (s == NULL){ return -E1000_ERR_EEPROM; } else{ for(ii = 0; ii < 6; ii++) { nic->enetaddr[ii] = s ? simple_strtoul (s, &e, 16) : 0; if (s){ s = (*e) ? e + 1 : e; } } } #endif return 0; } /****************************************************************************** * Initializes receive address filters. * * hw - Struct containing variables accessed by shared code * * Places the MAC address in receive address register 0 and clears the rest * of the receive addresss registers. Clears the multicast table. Assumes * the receiver is in reset when the routine is called. *****************************************************************************/ static void e1000_init_rx_addrs(struct eth_device *nic) { struct e1000_hw *hw = nic->priv; uint32_t i; uint32_t addr_low; uint32_t addr_high; DEBUGFUNC(); /* Setup the receive address. */ DEBUGOUT("Programming MAC Address into RAR[0]\n"); addr_low = (nic->enetaddr[0] | (nic->enetaddr[1] << 8) | (nic->enetaddr[2] << 16) | (nic->enetaddr[3] << 24)); addr_high = (nic->enetaddr[4] | (nic->enetaddr[5] << 8) | E1000_RAH_AV); E1000_WRITE_REG_ARRAY(hw, RA, 0, addr_low); E1000_WRITE_REG_ARRAY(hw, RA, 1, addr_high); /* Zero out the other 15 receive addresses. */ DEBUGOUT("Clearing RAR[1-15]\n"); for (i = 1; i < E1000_RAR_ENTRIES; i++) { E1000_WRITE_REG_ARRAY(hw, RA, (i << 1), 0); E1000_WRITE_REG_ARRAY(hw, RA, ((i << 1) + 1), 0); } } /****************************************************************************** * Clears the VLAN filer table * * hw - Struct containing variables accessed by shared code *****************************************************************************/ static void e1000_clear_vfta(struct e1000_hw *hw) { uint32_t offset; for (offset = 0; offset < E1000_VLAN_FILTER_TBL_SIZE; offset++) E1000_WRITE_REG_ARRAY(hw, VFTA, offset, 0); } /****************************************************************************** * Set the mac type member in the hw struct. * * hw - Struct containing variables accessed by shared code *****************************************************************************/ static int e1000_set_mac_type(struct e1000_hw *hw) { DEBUGFUNC(); switch (hw->device_id) { case E1000_DEV_ID_82542: switch (hw->revision_id) { case E1000_82542_2_0_REV_ID: hw->mac_type = e1000_82542_rev2_0; break; case E1000_82542_2_1_REV_ID: hw->mac_type = e1000_82542_rev2_1; break; default: /* Invalid 82542 revision ID */ return -E1000_ERR_MAC_TYPE; } break; case E1000_DEV_ID_82543GC_FIBER: case E1000_DEV_ID_82543GC_COPPER: hw->mac_type = e1000_82543; break; case E1000_DEV_ID_82544EI_COPPER: case E1000_DEV_ID_82544EI_FIBER: case E1000_DEV_ID_82544GC_COPPER: case E1000_DEV_ID_82544GC_LOM: hw->mac_type = e1000_82544; break; case E1000_DEV_ID_82540EM: case E1000_DEV_ID_82540EM_LOM: hw->mac_type = e1000_82540; break; case E1000_DEV_ID_82545EM_COPPER: case E1000_DEV_ID_82545EM_FIBER: hw->mac_type = e1000_82545; break; case E1000_DEV_ID_82546EB_COPPER: case E1000_DEV_ID_82546EB_FIBER: hw->mac_type = e1000_82546; break; default: /* Should never have loaded on this device */ return -E1000_ERR_MAC_TYPE; } return E1000_SUCCESS; } /****************************************************************************** * Reset the transmit and receive units; mask and clear all interrupts. * * hw - Struct containing variables accessed by shared code *****************************************************************************/ void e1000_reset_hw(struct e1000_hw *hw) { uint32_t ctrl; uint32_t ctrl_ext; uint32_t icr; uint32_t manc; DEBUGFUNC(); /* For 82542 (rev 2.0), disable MWI before issuing a device reset */ if (hw->mac_type == e1000_82542_rev2_0) { DEBUGOUT("Disabling MWI on 82542 rev 2.0\n"); pci_write_config_word(hw->pdev, PCI_COMMAND, hw-> pci_cmd_word & ~PCI_COMMAND_INVALIDATE); } /* Clear interrupt mask to stop board from generating interrupts */ DEBUGOUT("Masking off all interrupts\n"); E1000_WRITE_REG(hw, IMC, 0xffffffff); /* Disable the Transmit and Receive units. Then delay to allow * any pending transactions to complete before we hit the MAC with * the global reset. */ E1000_WRITE_REG(hw, RCTL, 0); E1000_WRITE_REG(hw, TCTL, E1000_TCTL_PSP); E1000_WRITE_FLUSH(hw); /* The tbi_compatibility_on Flag must be cleared when Rctl is cleared. */ hw->tbi_compatibility_on = FALSE; /* Delay to allow any outstanding PCI transactions to complete before * resetting the device */ mdelay(10); /* Issue a global reset to the MAC. This will reset the chip's * transmit, receive, DMA, and link units. It will not effect * the current PCI configuration. The global reset bit is self- * clearing, and should clear within a microsecond. */ DEBUGOUT("Issuing a global reset to MAC\n"); ctrl = E1000_READ_REG(hw, CTRL); #if 0 if (hw->mac_type > e1000_82543) E1000_WRITE_REG_IO(hw, CTRL, (ctrl | E1000_CTRL_RST)); else #endif E1000_WRITE_REG(hw, CTRL, (ctrl | E1000_CTRL_RST)); /* Force a reload from the EEPROM if necessary */ if (hw->mac_type < e1000_82540) { /* Wait for reset to complete */ udelay(10); ctrl_ext = E1000_READ_REG(hw, CTRL_EXT); ctrl_ext |= E1000_CTRL_EXT_EE_RST; E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext); E1000_WRITE_FLUSH(hw); /* Wait for EEPROM reload */ mdelay(2); } else { /* Wait for EEPROM reload (it happens automatically) */ mdelay(4); /* Dissable HW ARPs on ASF enabled adapters */ manc = E1000_READ_REG(hw, MANC); manc &= ~(E1000_MANC_ARP_EN); E1000_WRITE_REG(hw, MANC, manc); } /* Clear interrupt mask to stop board from generating interrupts */ DEBUGOUT("Masking off all interrupts\n"); E1000_WRITE_REG(hw, IMC, 0xffffffff); /* Clear any pending interrupt events. */ icr = E1000_READ_REG(hw, ICR); /* If MWI was previously enabled, reenable it. */ if (hw->mac_type == e1000_82542_rev2_0) { pci_write_config_word(hw->pdev, PCI_COMMAND, hw->pci_cmd_word); } } /****************************************************************************** * Performs basic configuration of the adapter. * * hw - Struct containing variables accessed by shared code * * Assumes that the controller has previously been reset and is in a * post-reset uninitialized state. Initializes the receive address registers, * multicast table, and VLAN filter table. Calls routines to setup link * configuration and flow control settings. Clears all on-chip counters. Leaves * the transmit and receive units disabled and uninitialized. *****************************************************************************/ static int e1000_init_hw(struct eth_device *nic) { struct e1000_hw *hw = nic->priv; uint32_t ctrl, status; uint32_t i; int32_t ret_val; uint16_t pcix_cmd_word; uint16_t pcix_stat_hi_word; uint16_t cmd_mmrbc; uint16_t stat_mmrbc; e1000_bus_type bus_type = e1000_bus_type_unknown; DEBUGFUNC(); #if 0 /* Initialize Identification LED */ ret_val = e1000_id_led_init(hw); if (ret_val < 0) { DEBUGOUT("Error Initializing Identification LED\n"); return ret_val; } #endif /* Set the Media Type and exit with error if it is not valid. */ if (hw->mac_type != e1000_82543) { /* tbi_compatibility is only valid on 82543 */ hw->tbi_compatibility_en = FALSE; } if (hw->mac_type >= e1000_82543) { status = E1000_READ_REG(hw, STATUS); if (status & E1000_STATUS_TBIMODE) { hw->media_type = e1000_media_type_fiber; /* tbi_compatibility not valid on fiber */ hw->tbi_compatibility_en = FALSE; } else { hw->media_type = e1000_media_type_copper; } } else { /* This is an 82542 (fiber only) */ hw->media_type = e1000_media_type_fiber; } /* Disabling VLAN filtering. */ DEBUGOUT("Initializing the IEEE VLAN\n"); E1000_WRITE_REG(hw, VET, 0); e1000_clear_vfta(hw); /* For 82542 (rev 2.0), disable MWI and put the receiver into reset */ if (hw->mac_type == e1000_82542_rev2_0) { DEBUGOUT("Disabling MWI on 82542 rev 2.0\n"); pci_write_config_word(hw->pdev, PCI_COMMAND, hw-> pci_cmd_word & ~PCI_COMMAND_INVALIDATE); E1000_WRITE_REG(hw, RCTL, E1000_RCTL_RST); E1000_WRITE_FLUSH(hw); mdelay(5); } /* Setup the receive address. This involves initializing all of the Receive * Address Registers (RARs 0 - 15). */ e1000_init_rx_addrs(nic); /* For 82542 (rev 2.0), take the receiver out of reset and enable MWI */ if (hw->mac_type == e1000_82542_rev2_0) { E1000_WRITE_REG(hw, RCTL, 0); E1000_WRITE_FLUSH(hw); mdelay(1); pci_write_config_word(hw->pdev, PCI_COMMAND, hw->pci_cmd_word); } /* Zero out the Multicast HASH table */ DEBUGOUT("Zeroing the MTA\n"); for (i = 0; i < E1000_MC_TBL_SIZE; i++) E1000_WRITE_REG_ARRAY(hw, MTA, i, 0); #if 0 /* Set the PCI priority bit correctly in the CTRL register. This * determines if the adapter gives priority to receives, or if it * gives equal priority to transmits and receives. */ if (hw->dma_fairness) { ctrl = E1000_READ_REG(hw, CTRL); E1000_WRITE_REG(hw, CTRL, ctrl | E1000_CTRL_PRIOR); } #endif if (hw->mac_type >= e1000_82543) { status = E1000_READ_REG(hw, STATUS); bus_type = (status & E1000_STATUS_PCIX_MODE) ? e1000_bus_type_pcix : e1000_bus_type_pci; } /* Workaround for PCI-X problem when BIOS sets MMRBC incorrectly. */ if (bus_type == e1000_bus_type_pcix) { pci_read_config_word(hw->pdev, PCIX_COMMAND_REGISTER, &pcix_cmd_word); pci_read_config_word(hw->pdev, PCIX_STATUS_REGISTER_HI, &pcix_stat_hi_word); cmd_mmrbc = (pcix_cmd_word & PCIX_COMMAND_MMRBC_MASK) >> PCIX_COMMAND_MMRBC_SHIFT; stat_mmrbc = (pcix_stat_hi_word & PCIX_STATUS_HI_MMRBC_MASK) >> PCIX_STATUS_HI_MMRBC_SHIFT; if (stat_mmrbc == PCIX_STATUS_HI_MMRBC_4K) stat_mmrbc = PCIX_STATUS_HI_MMRBC_2K; if (cmd_mmrbc > stat_mmrbc) { pcix_cmd_word &= ~PCIX_COMMAND_MMRBC_MASK; pcix_cmd_word |= stat_mmrbc << PCIX_COMMAND_MMRBC_SHIFT; pci_write_config_word(hw->pdev, PCIX_COMMAND_REGISTER, pcix_cmd_word); } } /* Call a subroutine to configure the link and setup flow control. */ ret_val = e1000_setup_link(nic); /* Set the transmit descriptor write-back policy */ if (hw->mac_type > e1000_82544) { ctrl = E1000_READ_REG(hw, TXDCTL); ctrl = (ctrl & ~E1000_TXDCTL_WTHRESH) | E1000_TXDCTL_FULL_TX_DESC_WB; E1000_WRITE_REG(hw, TXDCTL, ctrl); } #if 0 /* Clear all of the statistics registers (clear on read). It is * important that we do this after we have tried to establish link * because the symbol error count will increment wildly if there * is no link. */ e1000_clear_hw_cntrs(hw); #endif return ret_val; } /****************************************************************************** * Configures flow control and link settings. * * hw - Struct containing variables accessed by shared code * * Determines which flow control settings to use. Calls the apropriate media- * specific link configuration function. Configures the flow control settings. * Assuming the adapter has a valid link partner, a valid link should be * established. Assumes the hardware has previously been reset and the * transmitter and receiver are not enabled. *****************************************************************************/ static int e1000_setup_link(struct eth_device *nic) { struct e1000_hw *hw = nic->priv; uint32_t ctrl_ext; int32_t ret_val; uint16_t eeprom_data; DEBUGFUNC(); #ifndef CONFIG_AP1000 /* Read and store word 0x0F of the EEPROM. This word contains bits * that determine the hardware's default PAUSE (flow control) mode, * a bit that determines whether the HW defaults to enabling or * disabling auto-negotiation, and the direction of the * SW defined pins. If there is no SW over-ride of the flow * control setting, then the variable hw->fc will * be initialized based on a value in the EEPROM. */ if (e1000_read_eeprom(hw, EEPROM_INIT_CONTROL2_REG, &eeprom_data) < 0) { DEBUGOUT("EEPROM Read Error\n"); return -E1000_ERR_EEPROM; } #else /* we have to hardcode the proper value for our hardware. */ /* this value is for the 82540EM pci card used for prototyping, and it works. */ eeprom_data = 0xb220; #endif if (hw->fc == e1000_fc_default) { if ((eeprom_data & EEPROM_WORD0F_PAUSE_MASK) == 0) hw->fc = e1000_fc_none; else if ((eeprom_data & EEPROM_WORD0F_PAUSE_MASK) == EEPROM_WORD0F_ASM_DIR) hw->fc = e1000_fc_tx_pause; else hw->fc = e1000_fc_full; } /* We want to save off the original Flow Control configuration just * in case we get disconnected and then reconnected into a different * hub or switch with different Flow Control capabilities. */ if (hw->mac_type == e1000_82542_rev2_0) hw->fc &= (~e1000_fc_tx_pause); if ((hw->mac_type < e1000_82543) && (hw->report_tx_early == 1)) hw->fc &= (~e1000_fc_rx_pause); hw->original_fc = hw->fc; DEBUGOUT("After fix-ups FlowControl is now = %x\n", hw->fc); /* Take the 4 bits from EEPROM word 0x0F that determine the initial * polarity value for the SW controlled pins, and setup the * Extended Device Control reg with that info. * This is needed because one of the SW controlled pins is used for * signal detection. So this should be done before e1000_setup_pcs_link() * or e1000_phy_setup() is called. */ if (hw->mac_type == e1000_82543) { ctrl_ext = ((eeprom_data & EEPROM_WORD0F_SWPDIO_EXT) << SWDPIO__EXT_SHIFT); E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext); } /* Call the necessary subroutine to configure the link. */ ret_val = (hw->media_type == e1000_media_type_fiber) ? e1000_setup_fiber_link(nic) : e1000_setup_copper_link(nic); if (ret_val < 0) { return ret_val; } /* Initialize the flow control address, type, and PAUSE timer * registers to their default values. This is done even if flow * control is disabled, because it does not hurt anything to * initialize these registers. */ DEBUGOUT ("Initializing the Flow Control address, type and timer regs\n"); E1000_WRITE_REG(hw, FCAL, FLOW_CONTROL_ADDRESS_LOW); E1000_WRITE_REG(hw, FCAH, FLOW_CONTROL_ADDRESS_HIGH); E1000_WRITE_REG(hw, FCT, FLOW_CONTROL_TYPE); E1000_WRITE_REG(hw, FCTTV, hw->fc_pause_time); /* Set the flow control receive threshold registers. Normally, * these registers will be set to a default threshold that may be * adjusted later by the driver's runtime code. However, if the * ability to transmit pause frames in not enabled, then these * registers will be set to 0. */ if (!(hw->fc & e1000_fc_tx_pause)) { E1000_WRITE_REG(hw, FCRTL, 0); E1000_WRITE_REG(hw, FCRTH, 0); } else { /* We need to set up the Receive Threshold high and low water marks * as well as (optionally) enabling the transmission of XON frames. */ if (hw->fc_send_xon) { E1000_WRITE_REG(hw, FCRTL, (hw->fc_low_water | E1000_FCRTL_XONE)); E1000_WRITE_REG(hw, FCRTH, hw->fc_high_water); } else { E1000_WRITE_REG(hw, FCRTL, hw->fc_low_water); E1000_WRITE_REG(hw, FCRTH, hw->fc_high_water); } } return ret_val; } /****************************************************************************** * Sets up link for a fiber based adapter * * hw - Struct containing variables accessed by shared code * * Manipulates Physical Coding Sublayer functions in order to configure * link. Assumes the hardware has been previously reset and the transmitter * and receiver are not enabled. *****************************************************************************/ static int e1000_setup_fiber_link(struct eth_device *nic) { struct e1000_hw *hw = nic->priv; uint32_t ctrl; uint32_t status; uint32_t txcw = 0; uint32_t i; uint32_t signal; int32_t ret_val; DEBUGFUNC(); /* On adapters with a MAC newer that 82544, SW Defineable pin 1 will be * set when the optics detect a signal. On older adapters, it will be * cleared when there is a signal */ ctrl = E1000_READ_REG(hw, CTRL); if ((hw->mac_type > e1000_82544) && !(ctrl & E1000_CTRL_ILOS)) signal = E1000_CTRL_SWDPIN1; else signal = 0; printf("signal for %s is %x (ctrl %08x)!!!!\n", nic->name, signal, ctrl); /* Take the link out of reset */ ctrl &= ~(E1000_CTRL_LRST); e1000_config_collision_dist(hw); /* Check for a software override of the flow control settings, and setup * the device accordingly. If auto-negotiation is enabled, then software * will have to set the "PAUSE" bits to the correct value in the Tranmsit * Config Word Register (TXCW) and re-start auto-negotiation. However, if * auto-negotiation is disabled, then software will have to manually * configure the two flow control enable bits in the CTRL register. * * The possible values of the "fc" parameter are: * 0: Flow control is completely disabled * 1: Rx flow control is enabled (we can receive pause frames, but * not send pause frames). * 2: Tx flow control is enabled (we can send pause frames but we do * not support receiving pause frames). * 3: Both Rx and TX flow control (symmetric) are enabled. */ switch (hw->fc) { case e1000_fc_none: /* Flow control is completely disabled by a software over-ride. */ txcw = (E1000_TXCW_ANE | E1000_TXCW_FD); break; case e1000_fc_rx_pause: /* RX Flow control is enabled and TX Flow control is disabled by a * software over-ride. Since there really isn't a way to advertise * that we are capable of RX Pause ONLY, we will advertise that we * support both symmetric and asymmetric RX PAUSE. Later, we will * disable the adapter's ability to send PAUSE frames. */ txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_PAUSE_MASK); break; case e1000_fc_tx_pause: /* TX Flow control is enabled, and RX Flow control is disabled, by a * software over-ride. */ txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_ASM_DIR); break; case e1000_fc_full: /* Flow control (both RX and TX) is enabled by a software over-ride. */ txcw = (E1000_TXCW_ANE | E1000_TXCW_FD | E1000_TXCW_PAUSE_MASK); break; default: DEBUGOUT("Flow control param set incorrectly\n"); return -E1000_ERR_CONFIG; break; } /* Since auto-negotiation is enabled, take the link out of reset (the link * will be in reset, because we previously reset the chip). This will * restart auto-negotiation. If auto-neogtiation is successful then the * link-up status bit will be set and the flow control enable bits (RFCE * and TFCE) will be set according to their negotiated value. */ DEBUGOUT("Auto-negotiation enabled (%#x)\n", txcw); E1000_WRITE_REG(hw, TXCW, txcw); E1000_WRITE_REG(hw, CTRL, ctrl); E1000_WRITE_FLUSH(hw); hw->txcw = txcw; mdelay(1); /* If we have a signal (the cable is plugged in) then poll for a "Link-Up" * indication in the Device Status Register. Time-out if a link isn't * seen in 500 milliseconds seconds (Auto-negotiation should complete in * less than 500 milliseconds even if the other end is doing it in SW). */ if ((E1000_READ_REG(hw, CTRL) & E1000_CTRL_SWDPIN1) == signal) { DEBUGOUT("Looking for Link\n"); for (i = 0; i < (LINK_UP_TIMEOUT / 10); i++) { mdelay(10); status = E1000_READ_REG(hw, STATUS); if (status & E1000_STATUS_LU) break; } if (i == (LINK_UP_TIMEOUT / 10)) { /* AutoNeg failed to achieve a link, so we'll call * e1000_check_for_link. This routine will force the link up if we * detect a signal. This will allow us to communicate with * non-autonegotiating link partners. */ DEBUGOUT("Never got a valid link from auto-neg!!!\n"); hw->autoneg_failed = 1; ret_val = e1000_check_for_link(nic); if (ret_val < 0) { DEBUGOUT("Error while checking for link\n"); return ret_val; } hw->autoneg_failed = 0; } else { hw->autoneg_failed = 0; DEBUGOUT("Valid Link Found\n"); } } else { DEBUGOUT("No Signal Detected\n"); return -E1000_ERR_NOLINK; } return 0; } /****************************************************************************** * Detects which PHY is present and the speed and duplex * * hw - Struct containing variables accessed by shared code ******************************************************************************/ static int e1000_setup_copper_link(struct eth_device *nic) { struct e1000_hw *hw = nic->priv; uint32_t ctrl; int32_t ret_val; uint16_t i; uint16_t phy_data; DEBUGFUNC(); ctrl = E1000_READ_REG(hw, CTRL); /* With 82543, we need to force speed and duplex on the MAC equal to what * the PHY speed and duplex configuration is. In addition, we need to * perform a hardware reset on the PHY to take it out of reset. */ if (hw->mac_type > e1000_82543) { ctrl |= E1000_CTRL_SLU; ctrl &= ~(E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX); E1000_WRITE_REG(hw, CTRL, ctrl); } else { ctrl |= (E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX | E1000_CTRL_SLU); E1000_WRITE_REG(hw, CTRL, ctrl); e1000_phy_hw_reset(hw); } /* Make sure we have a valid PHY */ ret_val = e1000_detect_gig_phy(hw); if (ret_val < 0) { DEBUGOUT("Error, did not detect valid phy.\n"); return ret_val; } DEBUGOUT("Phy ID = %x \n", hw->phy_id); /* Enable CRS on TX. This must be set for half-duplex operation. */ if (e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, &phy_data) < 0) { DEBUGOUT("PHY Read Error\n"); return -E1000_ERR_PHY; } phy_data |= M88E1000_PSCR_ASSERT_CRS_ON_TX; #if 0 /* Options: * MDI/MDI-X = 0 (default) * 0 - Auto for all speeds * 1 - MDI mode * 2 - MDI-X mode * 3 - Auto for 1000Base-T only (MDI-X for 10/100Base-T modes) */ phy_data &= ~M88E1000_PSCR_AUTO_X_MODE; switch (hw->mdix) { case 1: phy_data |= M88E1000_PSCR_MDI_MANUAL_MODE; break; case 2: phy_data |= M88E1000_PSCR_MDIX_MANUAL_MODE; break; case 3: phy_data |= M88E1000_PSCR_AUTO_X_1000T; break; case 0: default: phy_data |= M88E1000_PSCR_AUTO_X_MODE; break; } #else phy_data |= M88E1000_PSCR_AUTO_X_MODE; #endif #if 0 /* Options: * disable_polarity_correction = 0 (default) * Automatic Correction for Reversed Cable Polarity * 0 - Disabled * 1 - Enabled */ phy_data &= ~M88E1000_PSCR_POLARITY_REVERSAL; if (hw->disable_polarity_correction == 1) phy_data |= M88E1000_PSCR_POLARITY_REVERSAL; #else phy_data &= ~M88E1000_PSCR_POLARITY_REVERSAL; #endif if (e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL, phy_data) < 0) { DEBUGOUT("PHY Write Error\n"); return -E1000_ERR_PHY; } /* Force TX_CLK in the Extended PHY Specific Control Register * to 25MHz clock. */ if (e1000_read_phy_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL, &phy_data) < 0) { DEBUGOUT("PHY Read Error\n"); return -E1000_ERR_PHY; } phy_data |= M88E1000_EPSCR_TX_CLK_25; /* Configure Master and Slave downshift values */ phy_data &= ~(M88E1000_EPSCR_MASTER_DOWNSHIFT_MASK | M88E1000_EPSCR_SLAVE_DOWNSHIFT_MASK); phy_data |= (M88E1000_EPSCR_MASTER_DOWNSHIFT_1X | M88E1000_EPSCR_SLAVE_DOWNSHIFT_1X); if (e1000_write_phy_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL, phy_data) < 0) { DEBUGOUT("PHY Write Error\n"); return -E1000_ERR_PHY; } /* SW Reset the PHY so all changes take effect */ ret_val = e1000_phy_reset(hw); if (ret_val < 0) { DEBUGOUT("Error Resetting the PHY\n"); return ret_val; } /* Options: * autoneg = 1 (default) * PHY will advertise value(s) parsed from * autoneg_advertised and fc * autoneg = 0 * PHY will be set to 10H, 10F, 100H, or 100F * depending on value parsed from forced_speed_duplex. */ /* Is autoneg enabled? This is enabled by default or by software override. * If so, call e1000_phy_setup_autoneg routine to parse the * autoneg_advertised and fc options. If autoneg is NOT enabled, then the * user should have provided a speed/duplex override. If so, then call * e1000_phy_force_speed_duplex to parse and set this up. */ /* Perform some bounds checking on the hw->autoneg_advertised * parameter. If this variable is zero, then set it to the default. */ hw->autoneg_advertised &= AUTONEG_ADVERTISE_SPEED_DEFAULT; /* If autoneg_advertised is zero, we assume it was not defaulted * by the calling code so we set to advertise full capability. */ if (hw->autoneg_advertised == 0) hw->autoneg_advertised = AUTONEG_ADVERTISE_SPEED_DEFAULT; DEBUGOUT("Reconfiguring auto-neg advertisement params\n"); ret_val = e1000_phy_setup_autoneg(hw); if (ret_val < 0) { DEBUGOUT("Error Setting up Auto-Negotiation\n"); return ret_val; } DEBUGOUT("Restarting Auto-Neg\n"); /* Restart auto-negotiation by setting the Auto Neg Enable bit and * the Auto Neg Restart bit in the PHY control register. */ if (e1000_read_phy_reg(hw, PHY_CTRL, &phy_data) < 0) { DEBUGOUT("PHY Read Error\n"); return -E1000_ERR_PHY; } phy_data |= (MII_CR_AUTO_NEG_EN | MII_CR_RESTART_AUTO_NEG); if (e1000_write_phy_reg(hw, PHY_CTRL, phy_data) < 0) { DEBUGOUT("PHY Write Error\n"); return -E1000_ERR_PHY; } #if 0 /* Does the user want to wait for Auto-Neg to complete here, or * check at a later time (for example, callback routine). */ if (hw->wait_autoneg_complete) { ret_val = e1000_wait_autoneg(hw); if (ret_val < 0) { DEBUGOUT ("Error while waiting for autoneg to complete\n"); return ret_val; } } #else /* If we do not wait for autonegtation to complete I * do not see a valid link status. */ ret_val = e1000_wait_autoneg(hw); if (ret_val < 0) { DEBUGOUT("Error while waiting for autoneg to complete\n"); return ret_val; } #endif /* Check link status. Wait up to 100 microseconds for link to become * valid. */ for (i = 0; i < 10; i++) { if (e1000_read_phy_reg(hw, PHY_STATUS, &phy_data) < 0) { DEBUGOUT("PHY Read Error\n"); return -E1000_ERR_PHY; } if (e1000_read_phy_reg(hw, PHY_STATUS, &phy_data) < 0) { DEBUGOUT("PHY Read Error\n"); return -E1000_ERR_PHY; } if (phy_data & MII_SR_LINK_STATUS) { /* We have link, so we need to finish the config process: * 1) Set up the MAC to the current PHY speed/duplex * if we are on 82543. If we * are on newer silicon, we only need to configure * collision distance in the Transmit Control Register. * 2) Set up flow control on the MAC to that established with * the link partner. */ if (hw->mac_type >= e1000_82544) { e1000_config_collision_dist(hw); } else { ret_val = e1000_config_mac_to_phy(hw); if (ret_val < 0) { DEBUGOUT ("Error configuring MAC to PHY settings\n"); return ret_val; } } ret_val = e1000_config_fc_after_link_up(hw); if (ret_val < 0) { DEBUGOUT("Error Configuring Flow Control\n"); return ret_val; } DEBUGOUT("Valid link established!!!\n"); return 0; } udelay(10); } DEBUGOUT("Unable to establish link!!!\n"); return -E1000_ERR_NOLINK; } /****************************************************************************** * Configures PHY autoneg and flow control advertisement settings * * hw - Struct containing variables accessed by shared code ******************************************************************************/ static int e1000_phy_setup_autoneg(struct e1000_hw *hw) { uint16_t mii_autoneg_adv_reg; uint16_t mii_1000t_ctrl_reg; DEBUGFUNC(); /* Read the MII Auto-Neg Advertisement Register (Address 4). */ if (e1000_read_phy_reg(hw, PHY_AUTONEG_ADV, &mii_autoneg_adv_reg) < 0) { DEBUGOUT("PHY Read Error\n"); return -E1000_ERR_PHY; } /* Read the MII 1000Base-T Control Register (Address 9). */ if (e1000_read_phy_reg(hw, PHY_1000T_CTRL, &mii_1000t_ctrl_reg) < 0) { DEBUGOUT("PHY Read Error\n"); return -E1000_ERR_PHY; } /* Need to parse both autoneg_advertised and fc and set up * the appropriate PHY registers. First we will parse for * autoneg_advertised software override. Since we can advertise * a plethora of combinations, we need to check each bit * individually. */ /* First we clear all the 10/100 mb speed bits in the Auto-Neg * Advertisement Register (Address 4) and the 1000 mb speed bits in * the 1000Base-T Control Register (Address 9). */ mii_autoneg_adv_reg &= ~REG4_SPEED_MASK; mii_1000t_ctrl_reg &= ~REG9_SPEED_MASK; DEBUGOUT("autoneg_advertised %x\n", hw->autoneg_advertised); /* Do we want to advertise 10 Mb Half Duplex? */ if (hw->autoneg_advertised & ADVERTISE_10_HALF) { DEBUGOUT("Advertise 10mb Half duplex\n"); mii_autoneg_adv_reg |= NWAY_AR_10T_HD_CAPS; } /* Do we want to advertise 10 Mb Full Duplex? */ if (hw->autoneg_advertised & ADVERTISE_10_FULL) { DEBUGOUT("Advertise 10mb Full duplex\n"); mii_autoneg_adv_reg |= NWAY_AR_10T_FD_CAPS; } /* Do we want to advertise 100 Mb Half Duplex? */ if (hw->autoneg_advertised & ADVERTISE_100_HALF) { DEBUGOUT("Advertise 100mb Half duplex\n"); mii_autoneg_adv_reg |= NWAY_AR_100TX_HD_CAPS; } /* Do we want to advertise 100 Mb Full Duplex? */ if (hw->autoneg_advertised & ADVERTISE_100_FULL) { DEBUGOUT("Advertise 100mb Full duplex\n"); mii_autoneg_adv_reg |= NWAY_AR_100TX_FD_CAPS; } /* We do not allow the Phy to advertise 1000 Mb Half Duplex */ if (hw->autoneg_advertised & ADVERTISE_1000_HALF) { DEBUGOUT ("Advertise 1000mb Half duplex requested, request denied!\n"); } /* Do we want to advertise 1000 Mb Full Duplex? */ if (hw->autoneg_advertised & ADVERTISE_1000_FULL) { DEBUGOUT("Advertise 1000mb Full duplex\n"); mii_1000t_ctrl_reg |= CR_1000T_FD_CAPS; } /* Check for a software override of the flow control settings, and * setup the PHY advertisement registers accordingly. If * auto-negotiation is enabled, then software will have to set the * "PAUSE" bits to the correct value in the Auto-Negotiation * Advertisement Register (PHY_AUTONEG_ADV) and re-start auto-negotiation. * * The possible values of the "fc" parameter are: * 0: Flow control is completely disabled * 1: Rx flow control is enabled (we can receive pause frames * but not send pause frames). * 2: Tx flow control is enabled (we can send pause frames * but we do not support receiving pause frames). * 3: Both Rx and TX flow control (symmetric) are enabled. * other: No software override. The flow control configuration * in the EEPROM is used. */ switch (hw->fc) { case e1000_fc_none: /* 0 */ /* Flow control (RX & TX) is completely disabled by a * software over-ride. */ mii_autoneg_adv_reg &= ~(NWAY_AR_ASM_DIR | NWAY_AR_PAUSE); break; case e1000_fc_rx_pause: /* 1 */ /* RX Flow control is enabled, and TX Flow control is * disabled, by a software over-ride. */ /* Since there really isn't a way to advertise that we are * capable of RX Pause ONLY, we will advertise that we * support both symmetric and asymmetric RX PAUSE. Later * (in e1000_config_fc_after_link_up) we will disable the *hw's ability to send PAUSE frames. */ mii_autoneg_adv_reg |= (NWAY_AR_ASM_DIR | NWAY_AR_PAUSE); break; case e1000_fc_tx_pause: /* 2 */ /* TX Flow control is enabled, and RX Flow control is * disabled, by a software over-ride. */ mii_autoneg_adv_reg |= NWAY_AR_ASM_DIR; mii_autoneg_adv_reg &= ~NWAY_AR_PAUSE; break; case e1000_fc_full: /* 3 */ /* Flow control (both RX and TX) is enabled by a software * over-ride. */ mii_autoneg_adv_reg |= (NWAY_AR_ASM_DIR | NWAY_AR_PAUSE); break; default: DEBUGOUT("Flow control param set incorrectly\n"); return -E1000_ERR_CONFIG; } if (e1000_write_phy_reg(hw, PHY_AUTONEG_ADV, mii_autoneg_adv_reg) < 0) { DEBUGOUT("PHY Write Error\n"); return -E1000_ERR_PHY; } DEBUGOUT("Auto-Neg Advertising %x\n", mii_autoneg_adv_reg); if (e1000_write_phy_reg(hw, PHY_1000T_CTRL, mii_1000t_ctrl_reg) < 0) { DEBUGOUT("PHY Write Error\n"); return -E1000_ERR_PHY; } return 0; } /****************************************************************************** * Sets the collision distance in the Transmit Control register * * hw - Struct containing variables accessed by shared code * * Link should have been established previously. Reads the speed and duplex * information from the Device Status register. ******************************************************************************/ static void e1000_config_collision_dist(struct e1000_hw *hw) { uint32_t tctl; tctl = E1000_READ_REG(hw, TCTL); tctl &= ~E1000_TCTL_COLD; tctl |= E1000_COLLISION_DISTANCE << E1000_COLD_SHIFT; E1000_WRITE_REG(hw, TCTL, tctl); E1000_WRITE_FLUSH(hw); } /****************************************************************************** * Sets MAC speed and duplex settings to reflect the those in the PHY * * hw - Struct containing variables accessed by shared code * mii_reg - data to write to the MII control register * * The contents of the PHY register containing the needed information need to * be passed in. ******************************************************************************/ static int e1000_config_mac_to_phy(struct e1000_hw *hw) { uint32_t ctrl; uint16_t phy_data; DEBUGFUNC(); /* Read the Device Control Register and set the bits to Force Speed * and Duplex. */ ctrl = E1000_READ_REG(hw, CTRL); ctrl |= (E1000_CTRL_FRCSPD | E1000_CTRL_FRCDPX); ctrl &= ~(E1000_CTRL_SPD_SEL | E1000_CTRL_ILOS); /* Set up duplex in the Device Control and Transmit Control * registers depending on negotiated values. */ if (e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS, &phy_data) < 0) { DEBUGOUT("PHY Read Error\n"); return -E1000_ERR_PHY; } if (phy_data & M88E1000_PSSR_DPLX) ctrl |= E1000_CTRL_FD; else ctrl &= ~E1000_CTRL_FD; e1000_config_collision_dist(hw); /* Set up speed in the Device Control register depending on * negotiated values. */ if ((phy_data & M88E1000_PSSR_SPEED) == M88E1000_PSSR_1000MBS) ctrl |= E1000_CTRL_SPD_1000; else if ((phy_data & M88E1000_PSSR_SPEED) == M88E1000_PSSR_100MBS) ctrl |= E1000_CTRL_SPD_100; /* Write the configured values back to the Device Control Reg. */ E1000_WRITE_REG(hw, CTRL, ctrl); return 0; } /****************************************************************************** * Forces the MAC's flow control settings. * * hw - Struct containing variables accessed by shared code * * Sets the TFCE and RFCE bits in the device control register to reflect * the adapter settings. TFCE and RFCE need to be explicitly set by * software when a Copper PHY is used because autonegotiation is managed * by the PHY rather than the MAC. Software must also configure these * bits when link is forced on a fiber connection. *****************************************************************************/ static int e1000_force_mac_fc(struct e1000_hw *hw) { uint32_t ctrl; DEBUGFUNC(); /* Get the current configuration of the Device Control Register */ ctrl = E1000_READ_REG(hw, CTRL); /* Because we didn't get link via the internal auto-negotiation * mechanism (we either forced link or we got link via PHY * auto-neg), we have to manually enable/disable transmit an * receive flow control. * * The "Case" statement below enables/disable flow control * according to the "hw->fc" parameter. * * The possible values of the "fc" parameter are: * 0: Flow control is completely disabled * 1: Rx flow control is enabled (we can receive pause * frames but not send pause frames). * 2: Tx flow control is enabled (we can send pause frames * frames but we do not receive pause frames). * 3: Both Rx and TX flow control (symmetric) is enabled. * other: No other values should be possible at this point. */ switch (hw->fc) { case e1000_fc_none: ctrl &= (~(E1000_CTRL_TFCE | E1000_CTRL_RFCE)); break; case e1000_fc_rx_pause: ctrl &= (~E1000_CTRL_TFCE); ctrl |= E1000_CTRL_RFCE; break; case e1000_fc_tx_pause: ctrl &= (~E1000_CTRL_RFCE); ctrl |= E1000_CTRL_TFCE; break; case e1000_fc_full: ctrl |= (E1000_CTRL_TFCE | E1000_CTRL_RFCE); break; default: DEBUGOUT("Flow control param set incorrectly\n"); return -E1000_ERR_CONFIG; } /* Disable TX Flow Control for 82542 (rev 2.0) */ if (hw->mac_type == e1000_82542_rev2_0) ctrl &= (~E1000_CTRL_TFCE); E1000_WRITE_REG(hw, CTRL, ctrl); return 0; } /****************************************************************************** * Configures flow control settings after link is established * * hw - Struct containing variables accessed by shared code * * Should be called immediately after a valid link has been established. * Forces MAC flow control settings if link was forced. When in MII/GMII mode * and autonegotiation is enabled, the MAC flow control settings will be set * based on the flow control negotiated by the PHY. In TBI mode, the TFCE * and RFCE bits will be automaticaly set to the negotiated flow control mode. *****************************************************************************/ static int e1000_config_fc_after_link_up(struct e1000_hw *hw) { int32_t ret_val; uint16_t mii_status_reg; uint16_t mii_nway_adv_reg; uint16_t mii_nway_lp_ability_reg; uint16_t speed; uint16_t duplex; DEBUGFUNC(); /* Check for the case where we have fiber media and auto-neg failed * so we had to force link. In this case, we need to force the * configuration of the MAC to match the "fc" parameter. */ if ((hw->media_type == e1000_media_type_fiber) && (hw->autoneg_failed)) { ret_val = e1000_force_mac_fc(hw); if (ret_val < 0) { DEBUGOUT("Error forcing flow control settings\n"); return ret_val; } } /* Check for the case where we have copper media and auto-neg is * enabled. In this case, we need to check and see if Auto-Neg * has completed, and if so, how the PHY and link partner has * flow control configured. */ if (hw->media_type == e1000_media_type_copper) { /* Read the MII Status Register and check to see if AutoNeg * has completed. We read this twice because this reg has * some "sticky" (latched) bits. */ if (e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg) < 0) { DEBUGOUT("PHY Read Error \n"); return -E1000_ERR_PHY; } if (e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg) < 0) { DEBUGOUT("PHY Read Error \n"); return -E1000_ERR_PHY; } if (mii_status_reg & MII_SR_AUTONEG_COMPLETE) { /* The AutoNeg process has completed, so we now need to * read both the Auto Negotiation Advertisement Register * (Address 4) and the Auto_Negotiation Base Page Ability * Register (Address 5) to determine how flow control was * negotiated. */ if (e1000_read_phy_reg (hw, PHY_AUTONEG_ADV, &mii_nway_adv_reg) < 0) { DEBUGOUT("PHY Read Error\n"); return -E1000_ERR_PHY; } if (e1000_read_phy_reg (hw, PHY_LP_ABILITY, &mii_nway_lp_ability_reg) < 0) { DEBUGOUT("PHY Read Error\n"); return -E1000_ERR_PHY; } /* Two bits in the Auto Negotiation Advertisement Register * (Address 4) and two bits in the Auto Negotiation Base * Page Ability Register (Address 5) determine flow control * for both the PHY and the link partner. The following * table, taken out of the IEEE 802.3ab/D6.0 dated March 25, * 1999, describes these PAUSE resolution bits and how flow * control is determined based upon these settings. * NOTE: DC = Don't Care * * LOCAL DEVICE | LINK PARTNER * PAUSE | ASM_DIR | PAUSE | ASM_DIR | NIC Resolution *-------|---------|-------|---------|-------------------- * 0 | 0 | DC | DC | e1000_fc_none * 0 | 1 | 0 | DC | e1000_fc_none * 0 | 1 | 1 | 0 | e1000_fc_none * 0 | 1 | 1 | 1 | e1000_fc_tx_pause * 1 | 0 | 0 | DC | e1000_fc_none * 1 | DC | 1 | DC | e1000_fc_full * 1 | 1 | 0 | 0 | e1000_fc_none * 1 | 1 | 0 | 1 | e1000_fc_rx_pause * */ /* Are both PAUSE bits set to 1? If so, this implies * Symmetric Flow Control is enabled at both ends. The * ASM_DIR bits are irrelevant per the spec. * * For Symmetric Flow Control: * * LOCAL DEVICE | LINK PARTNER * PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result *-------|---------|-------|---------|-------------------- * 1 | DC | 1 | DC | e1000_fc_full * */ if ((mii_nway_adv_reg & NWAY_AR_PAUSE) && (mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE)) { /* Now we need to check if the user selected RX ONLY * of pause frames. In this case, we had to advertise * FULL flow control because we could not advertise RX * ONLY. Hence, we must now check to see if we need to * turn OFF the TRANSMISSION of PAUSE frames. */ if (hw->original_fc == e1000_fc_full) { hw->fc = e1000_fc_full; DEBUGOUT("Flow Control = FULL.\r\n"); } else { hw->fc = e1000_fc_rx_pause; DEBUGOUT ("Flow Control = RX PAUSE frames only.\r\n"); } } /* For receiving PAUSE frames ONLY. * * LOCAL DEVICE | LINK PARTNER * PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result *-------|---------|-------|---------|-------------------- * 0 | 1 | 1 | 1 | e1000_fc_tx_pause * */ else if (!(mii_nway_adv_reg & NWAY_AR_PAUSE) && (mii_nway_adv_reg & NWAY_AR_ASM_DIR) && (mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE) && (mii_nway_lp_ability_reg & NWAY_LPAR_ASM_DIR)) { hw->fc = e1000_fc_tx_pause; DEBUGOUT ("Flow Control = TX PAUSE frames only.\r\n"); } /* For transmitting PAUSE frames ONLY. * * LOCAL DEVICE | LINK PARTNER * PAUSE | ASM_DIR | PAUSE | ASM_DIR | Result *-------|---------|-------|---------|-------------------- * 1 | 1 | 0 | 1 | e1000_fc_rx_pause * */ else if ((mii_nway_adv_reg & NWAY_AR_PAUSE) && (mii_nway_adv_reg & NWAY_AR_ASM_DIR) && !(mii_nway_lp_ability_reg & NWAY_LPAR_PAUSE) && (mii_nway_lp_ability_reg & NWAY_LPAR_ASM_DIR)) { hw->fc = e1000_fc_rx_pause; DEBUGOUT ("Flow Control = RX PAUSE frames only.\r\n"); } /* Per the IEEE spec, at this point flow control should be * disabled. However, we want to consider that we could * be connected to a legacy switch that doesn't advertise * desired flow control, but can be forced on the link * partner. So if we advertised no flow control, that is * what we will resolve to. If we advertised some kind of * receive capability (Rx Pause Only or Full Flow Control) * and the link partner advertised none, we will configure * ourselves to enable Rx Flow Control only. We can do * this safely for two reasons: If the link partner really * didn't want flow control enabled, and we enable Rx, no * harm done since we won't be receiving any PAUSE frames * anyway. If the intent on the link partner was to have * flow control enabled, then by us enabling RX only, we * can at least receive pause frames and process them. * This is a good idea because in most cases, since we are * predominantly a server NIC, more times than not we will * be asked to delay transmission of packets than asking * our link partner to pause transmission of frames. */ else if (hw->original_fc == e1000_fc_none || hw->original_fc == e1000_fc_tx_pause) { hw->fc = e1000_fc_none; DEBUGOUT("Flow Control = NONE.\r\n"); } else { hw->fc = e1000_fc_rx_pause; DEBUGOUT ("Flow Control = RX PAUSE frames only.\r\n"); } /* Now we need to do one last check... If we auto- * negotiated to HALF DUPLEX, flow control should not be * enabled per IEEE 802.3 spec. */ e1000_get_speed_and_duplex(hw, &speed, &duplex); if (duplex == HALF_DUPLEX) hw->fc = e1000_fc_none; /* Now we call a subroutine to actually force the MAC * controller to use the correct flow control settings. */ ret_val = e1000_force_mac_fc(hw); if (ret_val < 0) { DEBUGOUT ("Error forcing flow control settings\n"); return ret_val; } } else { DEBUGOUT ("Copper PHY and Auto Neg has not completed.\r\n"); } } return 0; } /****************************************************************************** * Checks to see if the link status of the hardware has changed. * * hw - Struct containing variables accessed by shared code * * Called by any function that needs to check the link status of the adapter. *****************************************************************************/ static int e1000_check_for_link(struct eth_device *nic) { struct e1000_hw *hw = nic->priv; uint32_t rxcw; uint32_t ctrl; uint32_t status; uint32_t rctl; uint32_t signal; int32_t ret_val; uint16_t phy_data; uint16_t lp_capability; DEBUGFUNC(); /* On adapters with a MAC newer that 82544, SW Defineable pin 1 will be * set when the optics detect a signal. On older adapters, it will be * cleared when there is a signal */ ctrl = E1000_READ_REG(hw, CTRL); if ((hw->mac_type > e1000_82544) && !(ctrl & E1000_CTRL_ILOS)) signal = E1000_CTRL_SWDPIN1; else signal = 0; status = E1000_READ_REG(hw, STATUS); rxcw = E1000_READ_REG(hw, RXCW); DEBUGOUT("ctrl: %#08x status %#08x rxcw %#08x\n", ctrl, status, rxcw); /* If we have a copper PHY then we only want to go out to the PHY * registers to see if Auto-Neg has completed and/or if our link * status has changed. The get_link_status flag will be set if we * receive a Link Status Change interrupt or we have Rx Sequence * Errors. */ if ((hw->media_type == e1000_media_type_copper) && hw->get_link_status) { /* First we want to see if the MII Status Register reports * link. If so, then we want to get the current speed/duplex * of the PHY. * Read the register twice since the link bit is sticky. */ if (e1000_read_phy_reg(hw, PHY_STATUS, &phy_data) < 0) { DEBUGOUT("PHY Read Error\n"); return -E1000_ERR_PHY; } if (e1000_read_phy_reg(hw, PHY_STATUS, &phy_data) < 0) { DEBUGOUT("PHY Read Error\n"); return -E1000_ERR_PHY; } if (phy_data & MII_SR_LINK_STATUS) { hw->get_link_status = FALSE; } else { /* No link detected */ return -E1000_ERR_NOLINK; } /* We have a M88E1000 PHY and Auto-Neg is enabled. If we * have Si on board that is 82544 or newer, Auto * Speed Detection takes care of MAC speed/duplex * configuration. So we only need to configure Collision * Distance in the MAC. Otherwise, we need to force * speed/duplex on the MAC to the current PHY speed/duplex * settings. */ if (hw->mac_type >= e1000_82544) e1000_config_collision_dist(hw); else { ret_val = e1000_config_mac_to_phy(hw); if (ret_val < 0) { DEBUGOUT ("Error configuring MAC to PHY settings\n"); return ret_val; } } /* Configure Flow Control now that Auto-Neg has completed. First, we * need to restore the desired flow control settings because we may * have had to re-autoneg with a different link partner. */ ret_val = e1000_config_fc_after_link_up(hw); if (ret_val < 0) { DEBUGOUT("Error configuring flow control\n"); return ret_val; } /* At this point we know that we are on copper and we have * auto-negotiated link. These are conditions for checking the link * parter capability register. We use the link partner capability to * determine if TBI Compatibility needs to be turned on or off. If * the link partner advertises any speed in addition to Gigabit, then * we assume that they are GMII-based, and TBI compatibility is not * needed. If no other speeds are advertised, we assume the link * partner is TBI-based, and we turn on TBI Compatibility. */ if (hw->tbi_compatibility_en) { if (e1000_read_phy_reg (hw, PHY_LP_ABILITY, &lp_capability) < 0) { DEBUGOUT("PHY Read Error\n"); return -E1000_ERR_PHY; } if (lp_capability & (NWAY_LPAR_10T_HD_CAPS | NWAY_LPAR_10T_FD_CAPS | NWAY_LPAR_100TX_HD_CAPS | NWAY_LPAR_100TX_FD_CAPS | NWAY_LPAR_100T4_CAPS)) { /* If our link partner advertises anything in addition to * gigabit, we do not need to enable TBI compatibility. */ if (hw->tbi_compatibility_on) { /* If we previously were in the mode, turn it off. */ rctl = E1000_READ_REG(hw, RCTL); rctl &= ~E1000_RCTL_SBP; E1000_WRITE_REG(hw, RCTL, rctl); hw->tbi_compatibility_on = FALSE; } } else { /* If TBI compatibility is was previously off, turn it on. For * compatibility with a TBI link partner, we will store bad * packets. Some frames have an additional byte on the end and * will look like CRC errors to to the hardware. */ if (!hw->tbi_compatibility_on) { hw->tbi_compatibility_on = TRUE; rctl = E1000_READ_REG(hw, RCTL); rctl |= E1000_RCTL_SBP; E1000_WRITE_REG(hw, RCTL, rctl); } } } } /* If we don't have link (auto-negotiation failed or link partner cannot * auto-negotiate), the cable is plugged in (we have signal), and our * link partner is not trying to auto-negotiate with us (we are receiving * idles or data), we need to force link up. We also need to give * auto-negotiation time to complete, in case the cable was just plugged * in. The autoneg_failed flag does this. */ else if ((hw->media_type == e1000_media_type_fiber) && (!(status & E1000_STATUS_LU)) && ((ctrl & E1000_CTRL_SWDPIN1) == signal) && (!(rxcw & E1000_RXCW_C))) { if (hw->autoneg_failed == 0) { hw->autoneg_failed = 1; return 0; } DEBUGOUT("NOT RXing /C/, disable AutoNeg and force link.\r\n"); /* Disable auto-negotiation in the TXCW register */ E1000_WRITE_REG(hw, TXCW, (hw->txcw & ~E1000_TXCW_ANE)); /* Force link-up and also force full-duplex. */ ctrl = E1000_READ_REG(hw, CTRL); ctrl |= (E1000_CTRL_SLU | E1000_CTRL_FD); E1000_WRITE_REG(hw, CTRL, ctrl); /* Configure Flow Control after forcing link up. */ ret_val = e1000_config_fc_after_link_up(hw); if (ret_val < 0) { DEBUGOUT("Error configuring flow control\n"); return ret_val; } } /* If we are forcing link and we are receiving /C/ ordered sets, re-enable * auto-negotiation in the TXCW register and disable forced link in the * Device Control register in an attempt to auto-negotiate with our link * partner. */ else if ((hw->media_type == e1000_media_type_fiber) && (ctrl & E1000_CTRL_SLU) && (rxcw & E1000_RXCW_C)) { DEBUGOUT ("RXing /C/, enable AutoNeg and stop forcing link.\r\n"); E1000_WRITE_REG(hw, TXCW, hw->txcw); E1000_WRITE_REG(hw, CTRL, (ctrl & ~E1000_CTRL_SLU)); } return 0; } /****************************************************************************** * Detects the current speed and duplex settings of the hardware. * * hw - Struct containing variables accessed by shared code * speed - Speed of the connection * duplex - Duplex setting of the connection *****************************************************************************/ static void e1000_get_speed_and_duplex(struct e1000_hw *hw, uint16_t * speed, uint16_t * duplex) { uint32_t status; DEBUGFUNC(); if (hw->mac_type >= e1000_82543) { status = E1000_READ_REG(hw, STATUS); if (status & E1000_STATUS_SPEED_1000) { *speed = SPEED_1000; DEBUGOUT("1000 Mbs, "); } else if (status & E1000_STATUS_SPEED_100) { *speed = SPEED_100; DEBUGOUT("100 Mbs, "); } else { *speed = SPEED_10; DEBUGOUT("10 Mbs, "); } if (status & E1000_STATUS_FD) { *duplex = FULL_DUPLEX; DEBUGOUT("Full Duplex\r\n"); } else { *duplex = HALF_DUPLEX; DEBUGOUT(" Half Duplex\r\n"); } } else { DEBUGOUT("1000 Mbs, Full Duplex\r\n"); *speed = SPEED_1000; *duplex = FULL_DUPLEX; } } /****************************************************************************** * Blocks until autoneg completes or times out (~4.5 seconds) * * hw - Struct containing variables accessed by shared code ******************************************************************************/ static int e1000_wait_autoneg(struct e1000_hw *hw) { uint16_t i; uint16_t phy_data; DEBUGFUNC(); DEBUGOUT("Waiting for Auto-Neg to complete.\n"); /* We will wait for autoneg to complete or 4.5 seconds to expire. */ for (i = PHY_AUTO_NEG_TIME; i > 0; i--) { /* Read the MII Status Register and wait for Auto-Neg * Complete bit to be set. */ if (e1000_read_phy_reg(hw, PHY_STATUS, &phy_data) < 0) { DEBUGOUT("PHY Read Error\n"); return -E1000_ERR_PHY; } if (e1000_read_phy_reg(hw, PHY_STATUS, &phy_data) < 0) { DEBUGOUT("PHY Read Error\n"); return -E1000_ERR_PHY; } if (phy_data & MII_SR_AUTONEG_COMPLETE) { DEBUGOUT("Auto-Neg complete.\n"); return 0; } mdelay(100); } DEBUGOUT("Auto-Neg timedout.\n"); return -E1000_ERR_TIMEOUT; } /****************************************************************************** * Raises the Management Data Clock * * hw - Struct containing variables accessed by shared code * ctrl - Device control register's current value ******************************************************************************/ static void e1000_raise_mdi_clk(struct e1000_hw *hw, uint32_t * ctrl) { /* Raise the clock input to the Management Data Clock (by setting the MDC * bit), and then delay 2 microseconds. */ E1000_WRITE_REG(hw, CTRL, (*ctrl | E1000_CTRL_MDC)); E1000_WRITE_FLUSH(hw); udelay(2); } /****************************************************************************** * Lowers the Management Data Clock * * hw - Struct containing variables accessed by shared code * ctrl - Device control register's current value ******************************************************************************/ static void e1000_lower_mdi_clk(struct e1000_hw *hw, uint32_t * ctrl) { /* Lower the clock input to the Management Data Clock (by clearing the MDC * bit), and then delay 2 microseconds. */ E1000_WRITE_REG(hw, CTRL, (*ctrl & ~E1000_CTRL_MDC)); E1000_WRITE_FLUSH(hw); udelay(2); } /****************************************************************************** * Shifts data bits out to the PHY * * hw - Struct containing variables accessed by shared code * data - Data to send out to the PHY * count - Number of bits to shift out * * Bits are shifted out in MSB to LSB order. ******************************************************************************/ static void e1000_shift_out_mdi_bits(struct e1000_hw *hw, uint32_t data, uint16_t count) { uint32_t ctrl; uint32_t mask; /* We need to shift "count" number of bits out to the PHY. So, the value * in the "data" parameter will be shifted out to the PHY one bit at a * time. In order to do this, "data" must be broken down into bits. */ mask = 0x01; mask <<= (count - 1); ctrl = E1000_READ_REG(hw, CTRL); /* Set MDIO_DIR and MDC_DIR direction bits to be used as output pins. */ ctrl |= (E1000_CTRL_MDIO_DIR | E1000_CTRL_MDC_DIR); while (mask) { /* A "1" is shifted out to the PHY by setting the MDIO bit to "1" and * then raising and lowering the Management Data Clock. A "0" is * shifted out to the PHY by setting the MDIO bit to "0" and then * raising and lowering the clock. */ if (data & mask) ctrl |= E1000_CTRL_MDIO; else ctrl &= ~E1000_CTRL_MDIO; E1000_WRITE_REG(hw, CTRL, ctrl); E1000_WRITE_FLUSH(hw); udelay(2); e1000_raise_mdi_clk(hw, &ctrl); e1000_lower_mdi_clk(hw, &ctrl); mask = mask >> 1; } } /****************************************************************************** * Shifts data bits in from the PHY * * hw - Struct containing variables accessed by shared code * * Bits are shifted in in MSB to LSB order. ******************************************************************************/ static uint16_t e1000_shift_in_mdi_bits(struct e1000_hw *hw) { uint32_t ctrl; uint16_t data = 0; uint8_t i; /* In order to read a register from the PHY, we need to shift in a total * of 18 bits from the PHY. The first two bit (turnaround) times are used * to avoid contention on the MDIO pin when a read operation is performed. * These two bits are ignored by us and thrown away. Bits are "shifted in" * by raising the input to the Management Data Clock (setting the MDC bit), * and then reading the value of the MDIO bit. */ ctrl = E1000_READ_REG(hw, CTRL); /* Clear MDIO_DIR (SWDPIO1) to indicate this bit is to be used as input. */ ctrl &= ~E1000_CTRL_MDIO_DIR; ctrl &= ~E1000_CTRL_MDIO; E1000_WRITE_REG(hw, CTRL, ctrl); E1000_WRITE_FLUSH(hw); /* Raise and Lower the clock before reading in the data. This accounts for * the turnaround bits. The first clock occurred when we clocked out the * last bit of the Register Address. */ e1000_raise_mdi_clk(hw, &ctrl); e1000_lower_mdi_clk(hw, &ctrl); for (data = 0, i = 0; i < 16; i++) { data = data << 1; e1000_raise_mdi_clk(hw, &ctrl); ctrl = E1000_READ_REG(hw, CTRL); /* Check to see if we shifted in a "1". */ if (ctrl & E1000_CTRL_MDIO) data |= 1; e1000_lower_mdi_clk(hw, &ctrl); } e1000_raise_mdi_clk(hw, &ctrl); e1000_lower_mdi_clk(hw, &ctrl); return data; } /***************************************************************************** * Reads the value from a PHY register * * hw - Struct containing variables accessed by shared code * reg_addr - address of the PHY register to read ******************************************************************************/ static int e1000_read_phy_reg(struct e1000_hw *hw, uint32_t reg_addr, uint16_t * phy_data) { uint32_t i; uint32_t mdic = 0; const uint32_t phy_addr = 1; if (reg_addr > MAX_PHY_REG_ADDRESS) { DEBUGOUT("PHY Address %d is out of range\n", reg_addr); return -E1000_ERR_PARAM; } if (hw->mac_type > e1000_82543) { /* Set up Op-code, Phy Address, and register address in the MDI * Control register. The MAC will take care of interfacing with the * PHY to retrieve the desired data. */ mdic = ((reg_addr << E1000_MDIC_REG_SHIFT) | (phy_addr << E1000_MDIC_PHY_SHIFT) | (E1000_MDIC_OP_READ)); E1000_WRITE_REG(hw, MDIC, mdic); /* Poll the ready bit to see if the MDI read completed */ for (i = 0; i < 64; i++) { udelay(10); mdic = E1000_READ_REG(hw, MDIC); if (mdic & E1000_MDIC_READY) break; } if (!(mdic & E1000_MDIC_READY)) { DEBUGOUT("MDI Read did not complete\n"); return -E1000_ERR_PHY; } if (mdic & E1000_MDIC_ERROR) { DEBUGOUT("MDI Error\n"); return -E1000_ERR_PHY; } *phy_data = (uint16_t) mdic; } else { /* We must first send a preamble through the MDIO pin to signal the * beginning of an MII instruction. This is done by sending 32 * consecutive "1" bits. */ e1000_shift_out_mdi_bits(hw, PHY_PREAMBLE, PHY_PREAMBLE_SIZE); /* Now combine the next few fields that are required for a read * operation. We use this method instead of calling the * e1000_shift_out_mdi_bits routine five different times. The format of * a MII read instruction consists of a shift out of 14 bits and is * defined as follows: * <Preamble><SOF><Op Code><Phy Addr><Reg Addr> * followed by a shift in of 18 bits. This first two bits shifted in * are TurnAround bits used to avoid contention on the MDIO pin when a * READ operation is performed. These two bits are thrown away * followed by a shift in of 16 bits which contains the desired data. */ mdic = ((reg_addr) | (phy_addr << 5) | (PHY_OP_READ << 10) | (PHY_SOF << 12)); e1000_shift_out_mdi_bits(hw, mdic, 14); /* Now that we've shifted out the read command to the MII, we need to * "shift in" the 16-bit value (18 total bits) of the requested PHY * register address. */ *phy_data = e1000_shift_in_mdi_bits(hw); } return 0; } /****************************************************************************** * Writes a value to a PHY register * * hw - Struct containing variables accessed by shared code * reg_addr - address of the PHY register to write * data - data to write to the PHY ******************************************************************************/ static int e1000_write_phy_reg(struct e1000_hw *hw, uint32_t reg_addr, uint16_t phy_data) { uint32_t i; uint32_t mdic = 0; const uint32_t phy_addr = 1; if (reg_addr > MAX_PHY_REG_ADDRESS) { DEBUGOUT("PHY Address %d is out of range\n", reg_addr); return -E1000_ERR_PARAM; } if (hw->mac_type > e1000_82543) { /* Set up Op-code, Phy Address, register address, and data intended * for the PHY register in the MDI Control register. The MAC will take * care of interfacing with the PHY to send the desired data. */ mdic = (((uint32_t) phy_data) | (reg_addr << E1000_MDIC_REG_SHIFT) | (phy_addr << E1000_MDIC_PHY_SHIFT) | (E1000_MDIC_OP_WRITE)); E1000_WRITE_REG(hw, MDIC, mdic); /* Poll the ready bit to see if the MDI read completed */ for (i = 0; i < 64; i++) { udelay(10); mdic = E1000_READ_REG(hw, MDIC); if (mdic & E1000_MDIC_READY) break; } if (!(mdic & E1000_MDIC_READY)) { DEBUGOUT("MDI Write did not complete\n"); return -E1000_ERR_PHY; } } else { /* We'll need to use the SW defined pins to shift the write command * out to the PHY. We first send a preamble to the PHY to signal the * beginning of the MII instruction. This is done by sending 32 * consecutive "1" bits. */ e1000_shift_out_mdi_bits(hw, PHY_PREAMBLE, PHY_PREAMBLE_SIZE); /* Now combine the remaining required fields that will indicate a * write operation. We use this method instead of calling the * e1000_shift_out_mdi_bits routine for each field in the command. The * format of a MII write instruction is as follows: * <Preamble><SOF><Op Code><Phy Addr><Reg Addr><Turnaround><Data>. */ mdic = ((PHY_TURNAROUND) | (reg_addr << 2) | (phy_addr << 7) | (PHY_OP_WRITE << 12) | (PHY_SOF << 14)); mdic <<= 16; mdic |= (uint32_t) phy_data; e1000_shift_out_mdi_bits(hw, mdic, 32); } return 0; } /****************************************************************************** * Returns the PHY to the power-on reset state * * hw - Struct containing variables accessed by shared code ******************************************************************************/ static void e1000_phy_hw_reset(struct e1000_hw *hw) { uint32_t ctrl; uint32_t ctrl_ext; DEBUGFUNC(); DEBUGOUT("Resetting Phy...\n"); if (hw->mac_type > e1000_82543) { /* Read the device control register and assert the E1000_CTRL_PHY_RST * bit. Then, take it out of reset. */ ctrl = E1000_READ_REG(hw, CTRL); E1000_WRITE_REG(hw, CTRL, ctrl | E1000_CTRL_PHY_RST); E1000_WRITE_FLUSH(hw); mdelay(10); E1000_WRITE_REG(hw, CTRL, ctrl); E1000_WRITE_FLUSH(hw); } else { /* Read the Extended Device Control Register, assert the PHY_RESET_DIR * bit to put the PHY into reset. Then, take it out of reset. */ ctrl_ext = E1000_READ_REG(hw, CTRL_EXT); ctrl_ext |= E1000_CTRL_EXT_SDP4_DIR; ctrl_ext &= ~E1000_CTRL_EXT_SDP4_DATA; E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext); E1000_WRITE_FLUSH(hw); mdelay(10); ctrl_ext |= E1000_CTRL_EXT_SDP4_DATA; E1000_WRITE_REG(hw, CTRL_EXT, ctrl_ext); E1000_WRITE_FLUSH(hw); } udelay(150); } /****************************************************************************** * Resets the PHY * * hw - Struct containing variables accessed by shared code * * Sets bit 15 of the MII Control regiser ******************************************************************************/ static int e1000_phy_reset(struct e1000_hw *hw) { uint16_t phy_data; DEBUGFUNC(); if (e1000_read_phy_reg(hw, PHY_CTRL, &phy_data) < 0) { DEBUGOUT("PHY Read Error\n"); return -E1000_ERR_PHY; } phy_data |= MII_CR_RESET; if (e1000_write_phy_reg(hw, PHY_CTRL, phy_data) < 0) { DEBUGOUT("PHY Write Error\n"); return -E1000_ERR_PHY; } udelay(1); return 0; } /****************************************************************************** * Probes the expected PHY address for known PHY IDs * * hw - Struct containing variables accessed by shared code ******************************************************************************/ static int e1000_detect_gig_phy(struct e1000_hw *hw) { uint16_t phy_id_high, phy_id_low; int match = FALSE; DEBUGFUNC(); /* Read the PHY ID Registers to identify which PHY is onboard. */ if (e1000_read_phy_reg(hw, PHY_ID1, &phy_id_high) < 0) { DEBUGOUT("PHY Read Error\n"); return -E1000_ERR_PHY; } hw->phy_id = (uint32_t) (phy_id_high << 16); udelay(2); if (e1000_read_phy_reg(hw, PHY_ID2, &phy_id_low) < 0) { DEBUGOUT("PHY Read Error\n"); return -E1000_ERR_PHY; } hw->phy_id |= (uint32_t) (phy_id_low & PHY_REVISION_MASK); switch (hw->mac_type) { case e1000_82543: if (hw->phy_id == M88E1000_E_PHY_ID) match = TRUE; break; case e1000_82544: if (hw->phy_id == M88E1000_I_PHY_ID) match = TRUE; break; case e1000_82540: case e1000_82545: case e1000_82546: if (hw->phy_id == M88E1011_I_PHY_ID) match = TRUE; break; default: DEBUGOUT("Invalid MAC type %d\n", hw->mac_type); return -E1000_ERR_CONFIG; } if (match) { DEBUGOUT("PHY ID 0x%X detected\n", hw->phy_id); return 0; } DEBUGOUT("Invalid PHY ID 0x%X\n", hw->phy_id); return -E1000_ERR_PHY; } /** * e1000_sw_init - Initialize general software structures (struct e1000_adapter) * * e1000_sw_init initializes the Adapter private data structure. * Fields are initialized based on PCI device information and * OS network device settings (MTU size). **/ static int e1000_sw_init(struct eth_device *nic, int cardnum) { struct e1000_hw *hw = (typeof(hw)) nic->priv; int result; /* PCI config space info */ pci_read_config_word(hw->pdev, PCI_VENDOR_ID, &hw->vendor_id); pci_read_config_word(hw->pdev, PCI_DEVICE_ID, &hw->device_id); pci_read_config_word(hw->pdev, PCI_SUBSYSTEM_VENDOR_ID, &hw->subsystem_vendor_id); pci_read_config_word(hw->pdev, PCI_SUBSYSTEM_ID, &hw->subsystem_id); pci_read_config_byte(hw->pdev, PCI_REVISION_ID, &hw->revision_id); pci_read_config_word(hw->pdev, PCI_COMMAND, &hw->pci_cmd_word); /* identify the MAC */ result = e1000_set_mac_type(hw); if (result) { E1000_ERR("Unknown MAC Type\n"); return result; } /* lan a vs. lan b settings */ if (hw->mac_type == e1000_82546) /*this also works w/ multiple 82546 cards */ /*but not if they're intermingled /w other e1000s */ hw->lan_loc = (cardnum % 2) ? e1000_lan_b : e1000_lan_a; else hw->lan_loc = e1000_lan_a; /* flow control settings */ hw->fc_high_water = E1000_FC_HIGH_THRESH; hw->fc_low_water = E1000_FC_LOW_THRESH; hw->fc_pause_time = E1000_FC_PAUSE_TIME; hw->fc_send_xon = 1; /* Media type - copper or fiber */ if (hw->mac_type >= e1000_82543) { uint32_t status = E1000_READ_REG(hw, STATUS); if (status & E1000_STATUS_TBIMODE) { DEBUGOUT("fiber interface\n"); hw->media_type = e1000_media_type_fiber; } else { DEBUGOUT("copper interface\n"); hw->media_type = e1000_media_type_copper; } } else { hw->media_type = e1000_media_type_fiber; } if (hw->mac_type < e1000_82543) hw->report_tx_early = 0; else hw->report_tx_early = 1; hw->tbi_compatibility_en = TRUE; #if 0 hw->wait_autoneg_complete = FALSE; hw->adaptive_ifs = TRUE; /* Copper options */ if (hw->media_type == e1000_media_type_copper) { hw->mdix = AUTO_ALL_MODES; hw->disable_polarity_correction = FALSE; } #endif return E1000_SUCCESS; } void fill_rx(struct e1000_hw *hw) { struct e1000_rx_desc *rd; rx_last = rx_tail; rd = rx_base + rx_tail; rx_tail = (rx_tail + 1) % 8; memset(rd, 0, 16); rd->buffer_addr = cpu_to_le64((u32) & packet); E1000_WRITE_REG(hw, RDT, rx_tail); } /** * e1000_configure_tx - Configure 8254x Transmit Unit after Reset * @adapter: board private structure * * Configure the Tx unit of the MAC after a reset. **/ static void e1000_configure_tx(struct e1000_hw *hw) { unsigned long ptr; unsigned long tctl; unsigned long tipg; ptr = (u32) tx_pool; if (ptr & 0xf) ptr = (ptr + 0x10) & (~0xf); tx_base = (typeof(tx_base)) ptr; E1000_WRITE_REG(hw, TDBAL, (u32) tx_base); E1000_WRITE_REG(hw, TDBAH, 0); E1000_WRITE_REG(hw, TDLEN, 128); /* Setup the HW Tx Head and Tail descriptor pointers */ E1000_WRITE_REG(hw, TDH, 0); E1000_WRITE_REG(hw, TDT, 0); tx_tail = 0; /* Set the default values for the Tx Inter Packet Gap timer */ switch (hw->mac_type) { case e1000_82542_rev2_0: case e1000_82542_rev2_1: tipg = DEFAULT_82542_TIPG_IPGT; tipg |= DEFAULT_82542_TIPG_IPGR1 << E1000_TIPG_IPGR1_SHIFT; tipg |= DEFAULT_82542_TIPG_IPGR2 << E1000_TIPG_IPGR2_SHIFT; break; default: if (hw->media_type == e1000_media_type_fiber) tipg = DEFAULT_82543_TIPG_IPGT_FIBER; else tipg = DEFAULT_82543_TIPG_IPGT_COPPER; tipg |= DEFAULT_82543_TIPG_IPGR1 << E1000_TIPG_IPGR1_SHIFT; tipg |= DEFAULT_82543_TIPG_IPGR2 << E1000_TIPG_IPGR2_SHIFT; } E1000_WRITE_REG(hw, TIPG, tipg); #if 0 /* Set the Tx Interrupt Delay register */ E1000_WRITE_REG(hw, TIDV, adapter->tx_int_delay); if (hw->mac_type >= e1000_82540) E1000_WRITE_REG(hw, TADV, adapter->tx_abs_int_delay); #endif /* Program the Transmit Control Register */ tctl = E1000_READ_REG(hw, TCTL); tctl &= ~E1000_TCTL_CT; tctl |= E1000_TCTL_EN | E1000_TCTL_PSP | (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT); E1000_WRITE_REG(hw, TCTL, tctl); e1000_config_collision_dist(hw); #if 0 /* Setup Transmit Descriptor Settings for this adapter */ adapter->txd_cmd = E1000_TXD_CMD_IFCS | E1000_TXD_CMD_IDE; if (adapter->hw.report_tx_early == 1) adapter->txd_cmd |= E1000_TXD_CMD_RS; else adapter->txd_cmd |= E1000_TXD_CMD_RPS; #endif } /** * e1000_setup_rctl - configure the receive control register * @adapter: Board private structure **/ static void e1000_setup_rctl(struct e1000_hw *hw) { uint32_t rctl; rctl = E1000_READ_REG(hw, RCTL); rctl &= ~(3 << E1000_RCTL_MO_SHIFT); rctl |= E1000_RCTL_EN | E1000_RCTL_BAM | E1000_RCTL_LBM_NO | E1000_RCTL_RDMTS_HALF; /* | (hw.mc_filter_type << E1000_RCTL_MO_SHIFT); */ if (hw->tbi_compatibility_on == 1) rctl |= E1000_RCTL_SBP; else rctl &= ~E1000_RCTL_SBP; rctl &= ~(E1000_RCTL_SZ_4096); #if 0 switch (adapter->rx_buffer_len) { case E1000_RXBUFFER_2048: default: #endif rctl |= E1000_RCTL_SZ_2048; rctl &= ~(E1000_RCTL_BSEX | E1000_RCTL_LPE); #if 0 break; case E1000_RXBUFFER_4096: rctl |= E1000_RCTL_SZ_4096 | E1000_RCTL_BSEX | E1000_RCTL_LPE; break; case E1000_RXBUFFER_8192: rctl |= E1000_RCTL_SZ_8192 | E1000_RCTL_BSEX | E1000_RCTL_LPE; break; case E1000_RXBUFFER_16384: rctl |= E1000_RCTL_SZ_16384 | E1000_RCTL_BSEX | E1000_RCTL_LPE; break; } #endif E1000_WRITE_REG(hw, RCTL, rctl); } /** * e1000_configure_rx - Configure 8254x Receive Unit after Reset * @adapter: board private structure * * Configure the Rx unit of the MAC after a reset. **/ static void e1000_configure_rx(struct e1000_hw *hw) { unsigned long ptr; unsigned long rctl; #if 0 unsigned long rxcsum; #endif rx_tail = 0; /* make sure receives are disabled while setting up the descriptors */ rctl = E1000_READ_REG(hw, RCTL); E1000_WRITE_REG(hw, RCTL, rctl & ~E1000_RCTL_EN); #if 0 /* set the Receive Delay Timer Register */ E1000_WRITE_REG(hw, RDTR, adapter->rx_int_delay); #endif if (hw->mac_type >= e1000_82540) { #if 0 E1000_WRITE_REG(hw, RADV, adapter->rx_abs_int_delay); #endif /* Set the interrupt throttling rate. Value is calculated * as DEFAULT_ITR = 1/(MAX_INTS_PER_SEC * 256ns) */ #define MAX_INTS_PER_SEC 8000 #define DEFAULT_ITR 1000000000/(MAX_INTS_PER_SEC * 256) E1000_WRITE_REG(hw, ITR, DEFAULT_ITR); } /* Setup the Base and Length of the Rx Descriptor Ring */ ptr = (u32) rx_pool; if (ptr & 0xf) ptr = (ptr + 0x10) & (~0xf); rx_base = (typeof(rx_base)) ptr; E1000_WRITE_REG(hw, RDBAL, (u32) rx_base); E1000_WRITE_REG(hw, RDBAH, 0); E1000_WRITE_REG(hw, RDLEN, 128); /* Setup the HW Rx Head and Tail Descriptor Pointers */ E1000_WRITE_REG(hw, RDH, 0); E1000_WRITE_REG(hw, RDT, 0); #if 0 /* Enable 82543 Receive Checksum Offload for TCP and UDP */ if ((adapter->hw.mac_type >= e1000_82543) && (adapter->rx_csum == TRUE)) { rxcsum = E1000_READ_REG(hw, RXCSUM); rxcsum |= E1000_RXCSUM_TUOFL; E1000_WRITE_REG(hw, RXCSUM, rxcsum); } #endif /* Enable Receives */ E1000_WRITE_REG(hw, RCTL, rctl); fill_rx(hw); } /************************************************************************** POLL - Wait for a frame ***************************************************************************/ static int e1000_poll(struct eth_device *nic) { struct e1000_hw *hw = nic->priv; struct e1000_rx_desc *rd; /* return true if there's an ethernet packet ready to read */ rd = rx_base + rx_last; if (!(le32_to_cpu(rd->status)) & E1000_RXD_STAT_DD) return 0; /*DEBUGOUT("recv: packet len=%d \n", rd->length); */ NetReceive((uchar *)packet, le32_to_cpu(rd->length)); fill_rx(hw); return 1; } /************************************************************************** TRANSMIT - Transmit a frame ***************************************************************************/ static int e1000_transmit(struct eth_device *nic, volatile void *packet, int length) { struct e1000_hw *hw = nic->priv; struct e1000_tx_desc *txp; int i = 0; txp = tx_base + tx_tail; tx_tail = (tx_tail + 1) % 8; txp->buffer_addr = cpu_to_le64(virt_to_bus(packet)); txp->lower.data = cpu_to_le32(E1000_TXD_CMD_RPS | E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS | length); txp->upper.data = 0; E1000_WRITE_REG(hw, TDT, tx_tail); while (!(le32_to_cpu(txp->upper.data) & E1000_TXD_STAT_DD)) { if (i++ > TOUT_LOOP) { DEBUGOUT("e1000: tx timeout\n"); return 0; } udelay(10); /* give the nic a chance to write to the register */ } return 1; } /*reset function*/ static inline int e1000_reset(struct eth_device *nic) { struct e1000_hw *hw = nic->priv; e1000_reset_hw(hw); if (hw->mac_type >= e1000_82544) { E1000_WRITE_REG(hw, WUC, 0); } return e1000_init_hw(nic); } /************************************************************************** DISABLE - Turn off ethernet interface ***************************************************************************/ static void e1000_disable(struct eth_device *nic) { struct e1000_hw *hw = nic->priv; /* Turn off the ethernet interface */ E1000_WRITE_REG(hw, RCTL, 0); E1000_WRITE_REG(hw, TCTL, 0); /* Clear the transmit ring */ E1000_WRITE_REG(hw, TDH, 0); E1000_WRITE_REG(hw, TDT, 0); /* Clear the receive ring */ E1000_WRITE_REG(hw, RDH, 0); E1000_WRITE_REG(hw, RDT, 0); /* put the card in its initial state */ #if 0 E1000_WRITE_REG(hw, CTRL, E1000_CTRL_RST); #endif mdelay(10); } /************************************************************************** INIT - set up ethernet interface(s) ***************************************************************************/ static int e1000_init(struct eth_device *nic, bd_t * bis) { struct e1000_hw *hw = nic->priv; int ret_val = 0; ret_val = e1000_reset(nic); if (ret_val < 0) { if ((ret_val == -E1000_ERR_NOLINK) || (ret_val == -E1000_ERR_TIMEOUT)) { E1000_ERR("Valid Link not detected\n"); } else { E1000_ERR("Hardware Initialization Failed\n"); } return 0; } e1000_configure_tx(hw); e1000_setup_rctl(hw); e1000_configure_rx(hw); return 1; } /************************************************************************** PROBE - Look for an adapter, this routine's visible to the outside You should omit the last argument struct pci_device * for a non-PCI NIC ***************************************************************************/ int e1000_initialize(bd_t * bis) { pci_dev_t devno; int card_number = 0; struct eth_device *nic = NULL; struct e1000_hw *hw = NULL; u32 iobase; int idx = 0; u32 PciCommandWord; while (1) { /* Find PCI device(s) */ if ((devno = pci_find_devices(supported, idx++)) < 0) { break; } pci_read_config_dword(devno, PCI_BASE_ADDRESS_0, &iobase); iobase &= ~0xf; /* Mask the bits that say "this is an io addr" */ DEBUGOUT("e1000#%d: iobase 0x%08x\n", card_number, iobase); pci_write_config_dword(devno, PCI_COMMAND, PCI_COMMAND_MEMORY | PCI_COMMAND_MASTER); /* Check if I/O accesses and Bus Mastering are enabled. */ pci_read_config_dword(devno, PCI_COMMAND, &PciCommandWord); if (!(PciCommandWord & PCI_COMMAND_MEMORY)) { printf("Error: Can not enable MEM access.\n"); continue; } else if (!(PciCommandWord & PCI_COMMAND_MASTER)) { printf("Error: Can not enable Bus Mastering.\n"); continue; } nic = (struct eth_device *) malloc(sizeof (*nic)); hw = (struct e1000_hw *) malloc(sizeof (*hw)); hw->pdev = devno; nic->priv = hw; nic->iobase = bus_to_phys(devno, iobase); sprintf(nic->name, "e1000#%d", card_number); /* Are these variables needed? */ #if 0 hw->fc = e1000_fc_none; hw->original_fc = e1000_fc_none; #else hw->fc = e1000_fc_default; hw->original_fc = e1000_fc_default; #endif hw->autoneg_failed = 0; hw->get_link_status = TRUE; hw->hw_addr = (typeof(hw->hw_addr)) iobase; hw->mac_type = e1000_undefined; /* MAC and Phy settings */ if (e1000_sw_init(nic, card_number) < 0) { free(hw); free(nic); return 0; } #ifndef CONFIG_AP1000 if (e1000_validate_eeprom_checksum(nic) < 0) { printf("The EEPROM Checksum Is Not Valid\n"); free(hw); free(nic); return 0; } #endif e1000_read_mac_addr(nic); E1000_WRITE_REG(hw, PBA, E1000_DEFAULT_PBA); printf("e1000: %02x:%02x:%02x:%02x:%02x:%02x\n", nic->enetaddr[0], nic->enetaddr[1], nic->enetaddr[2], nic->enetaddr[3], nic->enetaddr[4], nic->enetaddr[5]); nic->init = e1000_init; nic->recv = e1000_poll; nic->send = e1000_transmit; nic->halt = e1000_disable; eth_register(nic); card_number++; } return 1; } #endif