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- /**************************************************************************
- Etherboot - BOOTP/TFTP Bootstrap Program
- Inter Pro 1000 for Etherboot
- Drivers are port from Intel's Linux driver e1000-4.3.15
-
- ***************************************************************************/
- /*******************************************************************************
-
-
- Copyright(c) 1999 - 2003 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>
- *
- * Support for 82541ei & 82547ei chips from Intel's Linux driver 5.1.13 added by
- * Georg Baum <gbaum@users.sf.net>, sponsored by PetaMem GmbH and linkLINE Communications, Inc.
- *
- * 01/2004: Updated to Linux driver 5.2.22 by Georg Baum <gbaum@users.sf.net>
- */
-
- /* to get some global routines like printf */
- #include "etherboot.h"
- /* to get the interface to the body of the program */
- #include "nic.h"
- /* to get the PCI support functions, if this is a PCI NIC */
- #include "pci.h"
- #include "timer.h"
-
- typedef unsigned char *dma_addr_t;
-
- typedef enum {
- FALSE = 0,
- TRUE = 1
- } boolean_t;
-
- #define DEBUG 0
-
-
- /* Some pieces of code are disabled with #if 0 ... #endif.
- * They are not deleted to show where the etherboot driver differs
- * from the linux driver below the function level.
- * Some member variables of the hw struct have been eliminated
- * and the corresponding inplace checks inserted instead.
- * Pieces such as LED handling that we definitely don't need are deleted.
- *
- * The following defines should not be needed normally,
- * but may be helpful for debugging purposes. */
-
- /* Define this if you want to program the transmission control register
- * the way the Linux driver does it. */
- #undef LINUX_DRIVER_TCTL
-
- /* Define this to behave more like the Linux driver. */
- #undef LINUX_DRIVER
-
- #include "e1000_hw.h"
-
- /* NIC specific static variables go here */
- static struct e1000_hw hw;
- 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;
-
- /* Function forward declarations */
- static int e1000_setup_link(struct e1000_hw *hw);
- static int e1000_setup_fiber_serdes_link(struct e1000_hw *hw);
- static int e1000_setup_copper_link(struct e1000_hw *hw);
- 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 e1000_hw *hw);
- 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_read_phy_reg_ex(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 int e1000_write_phy_reg_ex(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);
- static void e1000_irq(struct nic *nic, irq_action_t action);
-
- /* Printing macros... */
-
- #define E1000_ERR(args...) printf("e1000: " args)
-
- #if DEBUG >= 3
- #define E1000_DBG(args...) printf("e1000: " args)
- #else
- #define E1000_DBG(args...)
- #endif
-
- #define MSGOUT(S, A, B) printk(S "\n", A, B)
- #if DEBUG >= 2
- #define DEBUGFUNC(F) DEBUGOUT(F "\n");
- #else
- #define DEBUGFUNC(F)
- #endif
- #if DEBUG >= 1
- #define DEBUGOUT(S) printf(S)
- #define DEBUGOUT1(S,A) printf(S,A)
- #define DEBUGOUT2(S,A,B) printf(S,A,B)
- #define DEBUGOUT3(S,A,B,C) printf(S,A,B,C)
- #define DEBUGOUT7(S,A,B,C,D,E,F,G) printf(S,A,B,C,D,E,F,G)
- #else
- #define DEBUGOUT(S)
- #define DEBUGOUT1(S,A)
- #define DEBUGOUT2(S,A,B)
- #define DEBUGOUT3(S,A,B,C)
- #define DEBUGOUT7(S,A,B,C,D,E,F,G)
- #endif
-
- #define E1000_WRITE_REG(a, reg, value) ( \
- ((a)->mac_type >= e1000_82543) ? \
- (writel((value), ((a)->hw_addr + E1000_##reg))) : \
- (writel((value), ((a)->hw_addr + E1000_82542_##reg))))
-
- #define E1000_READ_REG(a, reg) ( \
- ((a)->mac_type >= e1000_82543) ? \
- readl((a)->hw_addr + E1000_##reg) : \
- readl((a)->hw_addr + E1000_82542_##reg))
-
- #define E1000_WRITE_REG_ARRAY(a, reg, offset, value) ( \
- ((a)->mac_type >= e1000_82543) ? \
- writel((value), ((a)->hw_addr + E1000_##reg + ((offset) << 2))) : \
- writel((value), ((a)->hw_addr + E1000_82542_##reg + ((offset) << 2))))
-
- #define E1000_READ_REG_ARRAY(a, reg, offset) ( \
- ((a)->mac_type >= e1000_82543) ? \
- readl((a)->hw_addr + E1000_##reg + ((offset) << 2)) : \
- readl((a)->hw_addr + E1000_82542_##reg + ((offset) << 2)))
-
- #define E1000_WRITE_FLUSH(a) {uint32_t x; x = E1000_READ_REG(a, STATUS);}
-
- uint32_t
- e1000_io_read(struct e1000_hw *hw __unused, uint32_t port)
- {
- return inl(port);
- }
-
- void
- e1000_io_write(struct e1000_hw *hw __unused, uint32_t port, uint32_t value)
- {
- outl(value, port);
- }
-
- static inline void e1000_pci_set_mwi(struct e1000_hw *hw)
- {
- pci_write_config_word(hw->pdev, PCI_COMMAND, hw->pci_cmd_word);
- }
-
- static inline void e1000_pci_clear_mwi(struct e1000_hw *hw)
- {
- pci_write_config_word(hw->pdev, PCI_COMMAND,
- hw->pci_cmd_word & ~PCI_COMMAND_INVALIDATE);
- }
-
- /******************************************************************************
- * 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 <delay> microseconds.
- */
- *eecd = *eecd | E1000_EECD_SK;
- E1000_WRITE_REG(hw, EECD, *eecd);
- E1000_WRITE_FLUSH(hw);
- udelay(hw->eeprom.delay_usec);
- }
-
- /******************************************************************************
- * 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(hw->eeprom.delay_usec);
- }
-
- /******************************************************************************
- * 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)
- {
- struct e1000_eeprom_info *eeprom = &hw->eeprom;
- 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);
- if (eeprom->type == e1000_eeprom_microwire) {
- eecd &= ~E1000_EECD_DO;
- } else if (eeprom->type == e1000_eeprom_spi) {
- eecd |= E1000_EECD_DO;
- }
- 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(eeprom->delay_usec);
-
- 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,
- uint16_t count)
- {
- uint32_t eecd;
- uint32_t i;
- uint16_t data;
-
- /* In order to read a register from the EEPROM, we need to shift 'count'
- * 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 < count; 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 int32_t
- e1000_acquire_eeprom(struct e1000_hw *hw)
- {
- struct e1000_eeprom_info *eeprom = &hw->eeprom;
- uint32_t eecd, i=0;
-
- eecd = E1000_READ_REG(hw, EECD);
-
- /* Request EEPROM Access */
- if(hw->mac_type > e1000_82544) {
- eecd |= E1000_EECD_REQ;
- E1000_WRITE_REG(hw, EECD, eecd);
- eecd = E1000_READ_REG(hw, EECD);
- while((!(eecd & E1000_EECD_GNT)) &&
- (i < E1000_EEPROM_GRANT_ATTEMPTS)) {
- 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 -E1000_ERR_EEPROM;
- }
- }
-
- /* Setup EEPROM for Read/Write */
-
- if (eeprom->type == e1000_eeprom_microwire) {
- /* Clear SK and DI */
- eecd &= ~(E1000_EECD_DI | E1000_EECD_SK);
- E1000_WRITE_REG(hw, EECD, eecd);
-
- /* Set CS */
- eecd |= E1000_EECD_CS;
- E1000_WRITE_REG(hw, EECD, eecd);
- } else if (eeprom->type == e1000_eeprom_spi) {
- /* Clear SK and CS */
- eecd &= ~(E1000_EECD_CS | E1000_EECD_SK);
- E1000_WRITE_REG(hw, EECD, eecd);
- udelay(1);
- }
-
- return E1000_SUCCESS;
- }
-
- /******************************************************************************
- * Returns EEPROM to a "standby" state
- *
- * hw - Struct containing variables accessed by shared code
- *****************************************************************************/
- static void
- e1000_standby_eeprom(struct e1000_hw *hw)
- {
- struct e1000_eeprom_info *eeprom = &hw->eeprom;
- uint32_t eecd;
-
- eecd = E1000_READ_REG(hw, EECD);
-
- if(eeprom->type == e1000_eeprom_microwire) {
-
- /* Deselect EEPROM */
- eecd &= ~(E1000_EECD_CS | E1000_EECD_SK);
- E1000_WRITE_REG(hw, EECD, eecd);
- E1000_WRITE_FLUSH(hw);
- udelay(eeprom->delay_usec);
-
- /* Clock high */
- eecd |= E1000_EECD_SK;
- E1000_WRITE_REG(hw, EECD, eecd);
- E1000_WRITE_FLUSH(hw);
- udelay(eeprom->delay_usec);
-
- /* Select EEPROM */
- eecd |= E1000_EECD_CS;
- E1000_WRITE_REG(hw, EECD, eecd);
- E1000_WRITE_FLUSH(hw);
- udelay(eeprom->delay_usec);
-
- /* Clock low */
- eecd &= ~E1000_EECD_SK;
- E1000_WRITE_REG(hw, EECD, eecd);
- E1000_WRITE_FLUSH(hw);
- udelay(eeprom->delay_usec);
- } else if(eeprom->type == e1000_eeprom_spi) {
- /* Toggle CS to flush commands */
- eecd |= E1000_EECD_CS;
- E1000_WRITE_REG(hw, EECD, eecd);
- E1000_WRITE_FLUSH(hw);
- udelay(eeprom->delay_usec);
- eecd &= ~E1000_EECD_CS;
- E1000_WRITE_REG(hw, EECD, eecd);
- E1000_WRITE_FLUSH(hw);
- udelay(eeprom->delay_usec);
- }
- }
-
- /******************************************************************************
- * Terminates a command by inverting the EEPROM's chip select pin
- *
- * hw - Struct containing variables accessed by shared code
- *****************************************************************************/
- static void
- e1000_release_eeprom(struct e1000_hw *hw)
- {
- uint32_t eecd;
-
- eecd = E1000_READ_REG(hw, EECD);
-
- if (hw->eeprom.type == e1000_eeprom_spi) {
- eecd |= E1000_EECD_CS; /* Pull CS high */
- eecd &= ~E1000_EECD_SK; /* Lower SCK */
-
- E1000_WRITE_REG(hw, EECD, eecd);
-
- udelay(hw->eeprom.delay_usec);
- } else if(hw->eeprom.type == e1000_eeprom_microwire) {
- /* cleanup eeprom */
-
- /* CS on Microwire is active-high */
- eecd &= ~(E1000_EECD_CS | E1000_EECD_DI);
-
- E1000_WRITE_REG(hw, EECD, eecd);
-
- /* Rising edge of clock */
- eecd |= E1000_EECD_SK;
- E1000_WRITE_REG(hw, EECD, eecd);
- E1000_WRITE_FLUSH(hw);
- udelay(hw->eeprom.delay_usec);
-
- /* Falling edge of clock */
- eecd &= ~E1000_EECD_SK;
- E1000_WRITE_REG(hw, EECD, eecd);
- E1000_WRITE_FLUSH(hw);
- udelay(hw->eeprom.delay_usec);
- }
-
- /* Stop requesting EEPROM access */
- if(hw->mac_type > e1000_82544) {
- eecd &= ~E1000_EECD_REQ;
- E1000_WRITE_REG(hw, EECD, eecd);
- }
- }
-
- /******************************************************************************
- * Reads a 16 bit word from the EEPROM.
- *
- * hw - Struct containing variables accessed by shared code
- *****************************************************************************/
- static int32_t
- e1000_spi_eeprom_ready(struct e1000_hw *hw)
- {
- uint16_t retry_count = 0;
- uint8_t spi_stat_reg;
-
- /* Read "Status Register" repeatedly until the LSB is cleared. The
- * EEPROM will signal that the command has been completed by clearing
- * bit 0 of the internal status register. If it's not cleared within
- * 5 milliseconds, then error out.
- */
- retry_count = 0;
- do {
- e1000_shift_out_ee_bits(hw, EEPROM_RDSR_OPCODE_SPI,
- hw->eeprom.opcode_bits);
- spi_stat_reg = (uint8_t)e1000_shift_in_ee_bits(hw, 8);
- if (!(spi_stat_reg & EEPROM_STATUS_RDY_SPI))
- break;
-
- udelay(5);
- retry_count += 5;
-
- } while(retry_count < EEPROM_MAX_RETRY_SPI);
-
- /* ATMEL SPI write time could vary from 0-20mSec on 3.3V devices (and
- * only 0-5mSec on 5V devices)
- */
- if(retry_count >= EEPROM_MAX_RETRY_SPI) {
- DEBUGOUT("SPI EEPROM Status error\n");
- return -E1000_ERR_EEPROM;
- }
-
- return E1000_SUCCESS;
- }
-
- /******************************************************************************
- * 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
- * words - number of words to read
- *****************************************************************************/
- static int
- e1000_read_eeprom(struct e1000_hw *hw,
- uint16_t offset,
- uint16_t words,
- uint16_t *data)
- {
- struct e1000_eeprom_info *eeprom = &hw->eeprom;
- uint32_t i = 0;
-
- DEBUGFUNC("e1000_read_eeprom");
-
- /* A check for invalid values: offset too large, too many words, and not
- * enough words.
- */
- if((offset > eeprom->word_size) || (words > eeprom->word_size - offset) ||
- (words == 0)) {
- DEBUGOUT("\"words\" parameter out of bounds\n");
- return -E1000_ERR_EEPROM;
- }
-
- /* Prepare the EEPROM for reading */
- if(e1000_acquire_eeprom(hw) != E1000_SUCCESS)
- return -E1000_ERR_EEPROM;
-
- if(eeprom->type == e1000_eeprom_spi) {
- uint16_t word_in;
- uint8_t read_opcode = EEPROM_READ_OPCODE_SPI;
-
- if(e1000_spi_eeprom_ready(hw)) {
- e1000_release_eeprom(hw);
- return -E1000_ERR_EEPROM;
- }
-
- e1000_standby_eeprom(hw);
-
- /* Some SPI eeproms use the 8th address bit embedded in the opcode */
- if((eeprom->address_bits == 8) && (offset >= 128))
- read_opcode |= EEPROM_A8_OPCODE_SPI;
-
- /* Send the READ command (opcode + addr) */
- e1000_shift_out_ee_bits(hw, read_opcode, eeprom->opcode_bits);
- e1000_shift_out_ee_bits(hw, (uint16_t)(offset*2), eeprom->address_bits);
-
- /* Read the data. The address of the eeprom internally increments with
- * each byte (spi) being read, saving on the overhead of eeprom setup
- * and tear-down. The address counter will roll over if reading beyond
- * the size of the eeprom, thus allowing the entire memory to be read
- * starting from any offset. */
- for (i = 0; i < words; i++) {
- word_in = e1000_shift_in_ee_bits(hw, 16);
- data[i] = (word_in >> 8) | (word_in << 8);
- }
- } else if(eeprom->type == e1000_eeprom_microwire) {
- for (i = 0; i < words; i++) {
- /* Send the READ command (opcode + addr) */
- e1000_shift_out_ee_bits(hw, EEPROM_READ_OPCODE_MICROWIRE,
- eeprom->opcode_bits);
- e1000_shift_out_ee_bits(hw, (uint16_t)(offset + i),
- eeprom->address_bits);
-
- /* Read the data. For microwire, each word requires the overhead
- * of eeprom setup and tear-down. */
- data[i] = e1000_shift_in_ee_bits(hw, 16);
- e1000_standby_eeprom(hw);
- }
- }
-
- /* End this read operation */
- e1000_release_eeprom(hw);
-
- return E1000_SUCCESS;
- }
-
- /******************************************************************************
- * 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 e1000_hw *hw)
- {
- uint16_t checksum = 0;
- uint16_t i, eeprom_data;
-
- DEBUGFUNC("e1000_validate_eeprom_checksum");
-
- for(i = 0; i < (EEPROM_CHECKSUM_REG + 1); i++) {
- if(e1000_read_eeprom(hw, i, 1, &eeprom_data) < 0) {
- DEBUGOUT("EEPROM Read Error\n");
- return -E1000_ERR_EEPROM;
- }
- checksum += eeprom_data;
- }
-
- if(checksum == (uint16_t) EEPROM_SUM)
- return E1000_SUCCESS;
- else {
- DEBUGOUT("EEPROM Checksum Invalid\n");
- return -E1000_ERR_EEPROM;
- }
- }
-
- /******************************************************************************
- * Reads the adapter's MAC address from the EEPROM and inverts the LSB for the
- * second function of dual function devices
- *
- * hw - Struct containing variables accessed by shared code
- *****************************************************************************/
- static int
- e1000_read_mac_addr(struct e1000_hw *hw)
- {
- uint16_t offset;
- uint16_t eeprom_data;
- int i;
-
- DEBUGFUNC("e1000_read_mac_addr");
-
- for(i = 0; i < NODE_ADDRESS_SIZE; i += 2) {
- offset = i >> 1;
- if(e1000_read_eeprom(hw, offset, 1, &eeprom_data) < 0) {
- DEBUGOUT("EEPROM Read Error\n");
- return -E1000_ERR_EEPROM;
- }
- hw->mac_addr[i] = eeprom_data & 0xff;
- hw->mac_addr[i+1] = (eeprom_data >> 8) & 0xff;
- }
- if(((hw->mac_type == e1000_82546) || (hw->mac_type == e1000_82546_rev_3)) &&
- (E1000_READ_REG(hw, STATUS) & E1000_STATUS_FUNC_1))
- /* Invert the last bit if this is the second device */
- hw->mac_addr[5] ^= 1;
- return E1000_SUCCESS;
- }
-
- /******************************************************************************
- * 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 e1000_hw *hw)
- {
- uint32_t i;
- uint32_t addr_low;
- uint32_t addr_high;
-
- DEBUGFUNC("e1000_init_rx_addrs");
-
- /* Setup the receive address. */
- DEBUGOUT("Programming MAC Address into RAR[0]\n");
- addr_low = (hw->mac_addr[0] |
- (hw->mac_addr[1] << 8) |
- (hw->mac_addr[2] << 16) | (hw->mac_addr[3] << 24));
-
- addr_high = (hw->mac_addr[4] |
- (hw->mac_addr[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);
- }
-
- /******************************************************************************
- * Writes a value to one of the devices registers using port I/O (as opposed to
- * memory mapped I/O). Only 82544 and newer devices support port I/O. *
- * hw - Struct containing variables accessed by shared code
- * offset - offset to write to * value - value to write
- *****************************************************************************/
- void e1000_write_reg_io(struct e1000_hw *hw, uint32_t offset, uint32_t value){
- uint32_t io_addr = hw->io_base;
- uint32_t io_data = hw->io_base + 4;
- e1000_io_write(hw, io_addr, offset);
- e1000_io_write(hw, io_data, value);
- }
-
- /******************************************************************************
- * Set the phy type member in the hw struct.
- *
- * hw - Struct containing variables accessed by shared code
- *****************************************************************************/
- static int32_t
- e1000_set_phy_type(struct e1000_hw *hw)
- {
- DEBUGFUNC("e1000_set_phy_type");
-
- switch(hw->phy_id) {
- case M88E1000_E_PHY_ID:
- case M88E1000_I_PHY_ID:
- case M88E1011_I_PHY_ID:
- hw->phy_type = e1000_phy_m88;
- break;
- case IGP01E1000_I_PHY_ID:
- hw->phy_type = e1000_phy_igp;
- break;
- default:
- /* Should never have loaded on this device */
- hw->phy_type = e1000_phy_undefined;
- return -E1000_ERR_PHY_TYPE;
- }
-
- return E1000_SUCCESS;
- }
-
- /******************************************************************************
- * IGP phy init script - initializes the GbE PHY
- *
- * hw - Struct containing variables accessed by shared code
- *****************************************************************************/
- static void
- e1000_phy_init_script(struct e1000_hw *hw)
- {
- DEBUGFUNC("e1000_phy_init_script");
-
- #if 0
- /* See e1000_sw_init() of the Linux driver */
- if(hw->phy_init_script) {
- #else
- if((hw->mac_type == e1000_82541) ||
- (hw->mac_type == e1000_82547) ||
- (hw->mac_type == e1000_82541_rev_2) ||
- (hw->mac_type == e1000_82547_rev_2)) {
- #endif
- mdelay(20);
-
- e1000_write_phy_reg(hw,0x0000,0x0140);
-
- mdelay(5);
-
- if(hw->mac_type == e1000_82541 || hw->mac_type == e1000_82547) {
- e1000_write_phy_reg(hw, 0x1F95, 0x0001);
-
- e1000_write_phy_reg(hw, 0x1F71, 0xBD21);
-
- e1000_write_phy_reg(hw, 0x1F79, 0x0018);
-
- e1000_write_phy_reg(hw, 0x1F30, 0x1600);
-
- e1000_write_phy_reg(hw, 0x1F31, 0x0014);
-
- e1000_write_phy_reg(hw, 0x1F32, 0x161C);
-
- e1000_write_phy_reg(hw, 0x1F94, 0x0003);
-
- e1000_write_phy_reg(hw, 0x1F96, 0x003F);
-
- e1000_write_phy_reg(hw, 0x2010, 0x0008);
- } else {
- e1000_write_phy_reg(hw, 0x1F73, 0x0099);
- }
-
- e1000_write_phy_reg(hw, 0x0000, 0x3300);
-
-
- if(hw->mac_type == e1000_82547) {
- uint16_t fused, fine, coarse;
-
- /* Move to analog registers page */
- e1000_read_phy_reg(hw, IGP01E1000_ANALOG_SPARE_FUSE_STATUS, &fused);
-
- if(!(fused & IGP01E1000_ANALOG_SPARE_FUSE_ENABLED)) {
- e1000_read_phy_reg(hw, IGP01E1000_ANALOG_FUSE_STATUS, &fused);
-
- fine = fused & IGP01E1000_ANALOG_FUSE_FINE_MASK;
- coarse = fused & IGP01E1000_ANALOG_FUSE_COARSE_MASK;
-
- if(coarse > IGP01E1000_ANALOG_FUSE_COARSE_THRESH) {
- coarse -= IGP01E1000_ANALOG_FUSE_COARSE_10;
- fine -= IGP01E1000_ANALOG_FUSE_FINE_1;
- } else if(coarse == IGP01E1000_ANALOG_FUSE_COARSE_THRESH)
- fine -= IGP01E1000_ANALOG_FUSE_FINE_10;
-
- fused = (fused & IGP01E1000_ANALOG_FUSE_POLY_MASK) |
- (fine & IGP01E1000_ANALOG_FUSE_FINE_MASK) |
- (coarse & IGP01E1000_ANALOG_FUSE_COARSE_MASK);
-
- e1000_write_phy_reg(hw, IGP01E1000_ANALOG_FUSE_CONTROL, fused);
- e1000_write_phy_reg(hw, IGP01E1000_ANALOG_FUSE_BYPASS,
- IGP01E1000_ANALOG_FUSE_ENABLE_SW_CONTROL);
- }
- }
- }
- }
-
- /******************************************************************************
- * 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("e1000_set_mac_type");
-
- 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:
- case E1000_DEV_ID_82540EP:
- case E1000_DEV_ID_82540EP_LOM:
- case E1000_DEV_ID_82540EP_LP:
- 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_82545GM_COPPER:
- case E1000_DEV_ID_82545GM_FIBER:
- case E1000_DEV_ID_82545GM_SERDES:
- hw->mac_type = e1000_82545_rev_3;
- break;
- case E1000_DEV_ID_82546EB_COPPER:
- case E1000_DEV_ID_82546EB_FIBER:
- case E1000_DEV_ID_82546EB_QUAD_COPPER:
- hw->mac_type = e1000_82546;
- break;
- case E1000_DEV_ID_82546GB_COPPER:
- case E1000_DEV_ID_82546GB_FIBER:
- case E1000_DEV_ID_82546GB_SERDES:
- hw->mac_type = e1000_82546_rev_3;
- break;
- case E1000_DEV_ID_82541EI:
- case E1000_DEV_ID_82541EI_MOBILE:
- hw->mac_type = e1000_82541;
- break;
- case E1000_DEV_ID_82541ER:
- case E1000_DEV_ID_82541GI:
- case E1000_DEV_ID_82541GI_MOBILE:
- hw->mac_type = e1000_82541_rev_2;
- break;
- case E1000_DEV_ID_82547EI:
- hw->mac_type = e1000_82547;
- break;
- case E1000_DEV_ID_82547GI:
- hw->mac_type = e1000_82547_rev_2;
- break;
- default:
- /* Should never have loaded on this device */
- return -E1000_ERR_MAC_TYPE;
- }
-
- return E1000_SUCCESS;
- }
-
- /*****************************************************************************
- * Set media type and TBI compatibility.
- *
- * hw - Struct containing variables accessed by shared code
- * **************************************************************************/
- static void
- e1000_set_media_type(struct e1000_hw *hw)
- {
- uint32_t status;
-
- DEBUGFUNC("e1000_set_media_type");
-
- if(hw->mac_type != e1000_82543) {
- /* tbi_compatibility is only valid on 82543 */
- hw->tbi_compatibility_en = FALSE;
- }
-
- switch (hw->device_id) {
- case E1000_DEV_ID_82545GM_SERDES:
- case E1000_DEV_ID_82546GB_SERDES:
- hw->media_type = e1000_media_type_internal_serdes;
- break;
- default:
- 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;
- }
- }
- }
-
- /******************************************************************************
- * Reset the transmit and receive units; mask and clear all interrupts.
- *
- * hw - Struct containing variables accessed by shared code
- *****************************************************************************/
- static void
- e1000_reset_hw(struct e1000_hw *hw)
- {
- uint32_t ctrl;
- uint32_t ctrl_ext;
- uint32_t icr;
- uint32_t manc;
-
- DEBUGFUNC("e1000_reset_hw");
-
- /* 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");
- e1000_pci_clear_mwi(hw);
- }
-
- /* 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);
-
- ctrl = E1000_READ_REG(hw, CTRL);
-
- /* Must reset the PHY before resetting the MAC */
- if((hw->mac_type == e1000_82541) || (hw->mac_type == e1000_82547)) {
- E1000_WRITE_REG_IO(hw, CTRL, (ctrl | E1000_CTRL_PHY_RST));
- mdelay(5);
- }
-
- /* 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");
-
- switch(hw->mac_type) {
- case e1000_82544:
- case e1000_82540:
- case e1000_82545:
- case e1000_82546:
- case e1000_82541:
- case e1000_82541_rev_2:
- /* These controllers can't ack the 64-bit write when issuing the
- * reset, so use IO-mapping as a workaround to issue the reset */
- E1000_WRITE_REG_IO(hw, CTRL, (ctrl | E1000_CTRL_RST));
- break;
- case e1000_82545_rev_3:
- case e1000_82546_rev_3:
- /* Reset is performed on a shadow of the control register */
- E1000_WRITE_REG(hw, CTRL_DUP, (ctrl | E1000_CTRL_RST));
- break;
- default:
- E1000_WRITE_REG(hw, CTRL, (ctrl | E1000_CTRL_RST));
- break;
- }
-
- /* After MAC reset, force reload of EEPROM to restore power-on settings to
- * device. Later controllers reload the EEPROM automatically, so just wait
- * for reload to complete.
- */
- switch(hw->mac_type) {
- case e1000_82542_rev2_0:
- case e1000_82542_rev2_1:
- case e1000_82543:
- case e1000_82544:
- /* 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);
- break;
- case e1000_82541:
- case e1000_82541_rev_2:
- case e1000_82547:
- case e1000_82547_rev_2:
- /* Wait for EEPROM reload */
- mdelay(20);
- break;
- default:
- /* Wait for EEPROM reload (it happens automatically) */
- mdelay(5);
- break;
- }
-
- /* Disable HW ARPs on ASF enabled adapters */
- if(hw->mac_type >= e1000_82540) {
- manc = E1000_READ_REG(hw, MANC);
- manc &= ~(E1000_MANC_ARP_EN);
- E1000_WRITE_REG(hw, MANC, manc);
- }
-
- if((hw->mac_type == e1000_82541) || (hw->mac_type == e1000_82547)) {
- e1000_phy_init_script(hw);
- }
-
- /* 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) {
- #ifdef LINUX_DRIVER
- if(hw->pci_cmd_word & CMD_MEM_WRT_INVALIDATE)
- #endif
- e1000_pci_set_mwi(hw);
- }
- }
-
- /******************************************************************************
- * 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 e1000_hw *hw)
- {
- 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("e1000_init_hw");
-
- /* Set the media type and TBI compatibility */
- e1000_set_media_type(hw);
-
- /* 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");
- e1000_pci_clear_mwi(hw);
- 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(hw);
-
- /* 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);
- #ifdef LINUX_DRIVER
- if(hw->pci_cmd_word & CMD_MEM_WRT_INVALIDATE)
- #endif
- e1000_pci_set_mwi(hw);
- }
-
- /* 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
-
- switch(hw->mac_type) {
- case e1000_82545_rev_3:
- case e1000_82546_rev_3:
- break;
- default:
- if (hw->mac_type >= e1000_82543) {
- /* See e1000_get_bus_info() of the Linux driver */
- 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);
- }
- }
- break;
- }
-
- /* Call a subroutine to configure the link and setup flow control. */
- ret_val = e1000_setup_link(hw);
-
- /* 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;
- }
-
- /******************************************************************************
- * Adjust SERDES output amplitude based on EEPROM setting.
- *
- * hw - Struct containing variables accessed by shared code.
- *****************************************************************************/
- static int32_t
- e1000_adjust_serdes_amplitude(struct e1000_hw *hw)
- {
- uint16_t eeprom_data;
- int32_t ret_val;
-
- DEBUGFUNC("e1000_adjust_serdes_amplitude");
-
- if(hw->media_type != e1000_media_type_internal_serdes)
- return E1000_SUCCESS;
-
- switch(hw->mac_type) {
- case e1000_82545_rev_3:
- case e1000_82546_rev_3:
- break;
- default:
- return E1000_SUCCESS;
- }
-
- if ((ret_val = e1000_read_eeprom(hw, EEPROM_SERDES_AMPLITUDE, 1,
- &eeprom_data))) {
- return ret_val;
- }
-
- if(eeprom_data != EEPROM_RESERVED_WORD) {
- /* Adjust SERDES output amplitude only. */
- eeprom_data &= EEPROM_SERDES_AMPLITUDE_MASK;
- if((ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_EXT_CTRL,
- eeprom_data)))
- return ret_val;
- }
-
- return E1000_SUCCESS;
- }
-
- /******************************************************************************
- * 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 e1000_hw *hw)
- {
- uint32_t ctrl_ext;
- int32_t ret_val;
- uint16_t eeprom_data;
-
- DEBUGFUNC("e1000_setup_link");
-
- /* 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, 1, &eeprom_data) < 0) {
- DEBUGOUT("EEPROM Read Error\n");
- return -E1000_ERR_EEPROM;
- }
-
- 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 0
- /* See e1000_sw_init() of the Linux driver */
- if((hw->mac_type < e1000_82543) && (hw->report_tx_early == 1))
- #else
- if((hw->mac_type < e1000_82543) && (hw->mac_type >= e1000_82543))
- #endif
- hw->fc &= (~e1000_fc_rx_pause);
-
- #if 0
- hw->original_fc = hw->fc;
- #endif
-
- DEBUGOUT1("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_copper) ?
- e1000_setup_copper_link(hw) :
- e1000_setup_fiber_serdes_link(hw);
- 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);
- #if 0
- E1000_WRITE_REG(hw, FCTTV, hw->fc_pause_time);
- #else
- E1000_WRITE_REG(hw, FCTTV, FC_DEFAULT_TX_TIMER);
- #endif
-
- /* 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 0
- 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);
- }
- #else
- E1000_WRITE_REG(hw, FCRTL, (FC_DEFAULT_LO_THRESH | E1000_FCRTL_XONE));
- E1000_WRITE_REG(hw, FCRTH, FC_DEFAULT_HI_THRESH);
- #endif
- }
- return ret_val;
- }
-
- /******************************************************************************
- * Sets up link for a fiber based or serdes 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_serdes_link(struct e1000_hw *hw)
- {
- uint32_t ctrl;
- uint32_t status;
- uint32_t txcw = 0;
- uint32_t i;
- uint32_t signal = 0;
- int32_t ret_val;
-
- DEBUGFUNC("e1000_setup_fiber_serdes_link");
-
- /* On adapters with a MAC newer than 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. This applies to fiber media only.
- * If we're on serdes media, adjust the output amplitude to value set in
- * the EEPROM.
- */
- ctrl = E1000_READ_REG(hw, CTRL);
- if(hw->media_type == e1000_media_type_fiber)
- signal = (hw->mac_type > e1000_82544) ? E1000_CTRL_SWDPIN1 : 0;
-
- if((ret_val = e1000_adjust_serdes_amplitude(hw)))
- return ret_val;
-
- /* Take the link out of reset */
- ctrl &= ~(E1000_CTRL_LRST);
-
- #if 0
- /* Adjust VCO speed to improve BER performance */
- if((ret_val = e1000_set_vco_speed(hw)))
- return ret_val;
- #endif
-
- 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\n");
-
- 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).
- * For internal serdes, we just assume a signal is present, then poll.
- */
- if(hw->media_type == e1000_media_type_internal_serdes ||
- (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)) {
- DEBUGOUT("Never got a valid link from auto-neg!!!\n");
- hw->autoneg_failed = 1;
- /* 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.
- */
- if((ret_val = e1000_check_for_link(hw))) {
- 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_SUCCESS;
- }
-
- /******************************************************************************
- * 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 e1000_hw *hw)
- {
- uint32_t ctrl;
- int32_t ret_val;
- uint16_t i;
- uint16_t phy_data;
-
- DEBUGFUNC("e1000_setup_copper_link");
-
- 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 */
- if((ret_val = e1000_detect_gig_phy(hw))) {
- DEBUGOUT("Error, did not detect valid phy.\n");
- return ret_val;
- }
- DEBUGOUT1("Phy ID = %x \n", hw->phy_id);
-
- if(hw->mac_type <= e1000_82543 ||
- hw->mac_type == e1000_82541 || hw->mac_type == e1000_82547 ||
- #if 0
- hw->mac_type == e1000_82541_rev_2 || hw->mac_type == e1000_82547_rev_2)
- hw->phy_reset_disable = FALSE;
-
- if(!hw->phy_reset_disable) {
- #else
- hw->mac_type == e1000_82541_rev_2 || hw->mac_type == e1000_82547_rev_2) {
- #endif
- if (hw->phy_type == e1000_phy_igp) {
-
- if((ret_val = e1000_phy_reset(hw))) {
- DEBUGOUT("Error Resetting the PHY\n");
- return ret_val;
- }
-
- /* Wait 10ms for MAC to configure PHY from eeprom settings */
- mdelay(15);
-
- #if 0
- /* disable lplu d3 during driver init */
- if((ret_val = e1000_set_d3_lplu_state(hw, FALSE))) {
- DEBUGOUT("Error Disabling LPLU D3\n");
- return ret_val;
- }
-
- /* Configure mdi-mdix settings */
- if((ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL,
- &phy_data)))
- return ret_val;
-
- if((hw->mac_type == e1000_82541) || (hw->mac_type == e1000_82547)) {
- hw->dsp_config_state = e1000_dsp_config_disabled;
- /* Force MDI for IGP B-0 PHY */
- phy_data &= ~(IGP01E1000_PSCR_AUTO_MDIX |
- IGP01E1000_PSCR_FORCE_MDI_MDIX);
- hw->mdix = 1;
-
- } else {
- hw->dsp_config_state = e1000_dsp_config_enabled;
- phy_data &= ~IGP01E1000_PSCR_AUTO_MDIX;
-
- switch (hw->mdix) {
- case 1:
- phy_data &= ~IGP01E1000_PSCR_FORCE_MDI_MDIX;
- break;
- case 2:
- phy_data |= IGP01E1000_PSCR_FORCE_MDI_MDIX;
- break;
- case 0:
- default:
- phy_data |= IGP01E1000_PSCR_AUTO_MDIX;
- break;
- }
- }
- if((ret_val = e1000_write_phy_reg(hw, IGP01E1000_PHY_PORT_CTRL,
- phy_data)))
- return ret_val;
-
- /* set auto-master slave resolution settings */
- e1000_ms_type phy_ms_setting = hw->master_slave;
-
- if(hw->ffe_config_state == e1000_ffe_config_active)
- hw->ffe_config_state = e1000_ffe_config_enabled;
-
- if(hw->dsp_config_state == e1000_dsp_config_activated)
- hw->dsp_config_state = e1000_dsp_config_enabled;
- #endif
-
- /* when autonegotiation advertisment is only 1000Mbps then we
- * should disable SmartSpeed and enable Auto MasterSlave
- * resolution as hardware default. */
- if(hw->autoneg_advertised == ADVERTISE_1000_FULL) {
- /* Disable SmartSpeed */
- if((ret_val = e1000_read_phy_reg(hw,
- IGP01E1000_PHY_PORT_CONFIG,
- &phy_data)))
- return ret_val;
- phy_data &= ~IGP01E1000_PSCFR_SMART_SPEED;
- if((ret_val = e1000_write_phy_reg(hw,
- IGP01E1000_PHY_PORT_CONFIG,
- phy_data)))
- return ret_val;
- /* Set auto Master/Slave resolution process */
- if((ret_val = e1000_read_phy_reg(hw, PHY_1000T_CTRL,
- &phy_data)))
- return ret_val;
- phy_data &= ~CR_1000T_MS_ENABLE;
- if((ret_val = e1000_write_phy_reg(hw, PHY_1000T_CTRL,
- phy_data)))
- return ret_val;
- }
-
- if((ret_val = e1000_read_phy_reg(hw, PHY_1000T_CTRL,
- &phy_data)))
- return ret_val;
-
- #if 0
- /* load defaults for future use */
- hw->original_master_slave = (phy_data & CR_1000T_MS_ENABLE) ?
- ((phy_data & CR_1000T_MS_VALUE) ?
- e1000_ms_force_master :
- e1000_ms_force_slave) :
- e1000_ms_auto;
-
- switch (phy_ms_setting) {
- case e1000_ms_force_master:
- phy_data |= (CR_1000T_MS_ENABLE | CR_1000T_MS_VALUE);
- break;
- case e1000_ms_force_slave:
- phy_data |= CR_1000T_MS_ENABLE;
- phy_data &= ~(CR_1000T_MS_VALUE);
- break;
- case e1000_ms_auto:
- phy_data &= ~CR_1000T_MS_ENABLE;
- default:
- break;
- }
- #endif
-
- if((ret_val = e1000_write_phy_reg(hw, PHY_1000T_CTRL,
- phy_data)))
- return ret_val;
- } else {
- /* Enable CRS on TX. This must be set for half-duplex operation. */
- if((ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_CTRL,
- &phy_data)))
- return ret_val;
-
- phy_data |= M88E1000_PSCR_ASSERT_CRS_ON_TX;
-
- /* 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)
- */
- #if 0
- 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:
- #endif
- phy_data |= M88E1000_PSCR_AUTO_X_MODE;
- #if 0
- break;
- }
- #endif
-
- /* Options:
- * disable_polarity_correction = 0 (default)
- * Automatic Correction for Reversed Cable Polarity
- * 0 - Disabled
- * 1 - Enabled
- */
- phy_data &= ~M88E1000_PSCR_POLARITY_REVERSAL;
- if((ret_val = e1000_write_phy_reg(hw, M88E1000_PHY_SPEC_CTRL,
- phy_data)))
- return ret_val;
-
- /* Force TX_CLK in the Extended PHY Specific Control Register
- * to 25MHz clock.
- */
- if((ret_val = e1000_read_phy_reg(hw, M88E1000_EXT_PHY_SPEC_CTRL,
- &phy_data)))
- return ret_val;
-
- phy_data |= M88E1000_EPSCR_TX_CLK_25;
-
- #ifdef LINUX_DRIVER
- if (hw->phy_revision < M88E1011_I_REV_4) {
- #endif
- /* 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((ret_val = e1000_write_phy_reg(hw,
- M88E1000_EXT_PHY_SPEC_CTRL,
- phy_data)))
- return ret_val;
- }
-
- /* SW Reset the PHY so all changes take effect */
- if((ret_val = e1000_phy_reset(hw))) {
- DEBUGOUT("Error Resetting the PHY\n");
- return ret_val;
- #ifdef LINUX_DRIVER
- }
- #endif
- }
-
- /* 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");
- if((ret_val = e1000_phy_setup_autoneg(hw))) {
- 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((ret_val = e1000_read_phy_reg(hw, PHY_CTRL, &phy_data)))
- return ret_val;
-
- phy_data |= (MII_CR_AUTO_NEG_EN | MII_CR_RESTART_AUTO_NEG);
- if((ret_val = e1000_write_phy_reg(hw, PHY_CTRL, phy_data)))
- return ret_val;
-
- #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) {
- if((ret_val = e1000_wait_autoneg(hw))) {
- DEBUGOUT("Error while waiting for autoneg to complete\n");
- return ret_val;
- }
- }
- #else
- /* If we do not wait for autonegotiation to complete I
- * do not see a valid link status.
- */
- if((ret_val = e1000_wait_autoneg(hw))) {
- DEBUGOUT("Error while waiting for autoneg to complete\n");
- return ret_val;
- }
- #endif
- } /* !hw->phy_reset_disable */
-
- /* Check link status. Wait up to 100 microseconds for link to become
- * valid.
- */
- for(i = 0; i < 10; i++) {
- if((ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data)))
- return ret_val;
- if((ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data)))
- return ret_val;
-
- 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 {
- if((ret_val = e1000_config_mac_to_phy(hw))) {
- DEBUGOUT("Error configuring MAC to PHY settings\n");
- return ret_val;
- }
- }
- if((ret_val = e1000_config_fc_after_link_up(hw))) {
- DEBUGOUT("Error Configuring Flow Control\n");
- return ret_val;
- }
- #if 0
- if(hw->phy_type == e1000_phy_igp) {
- if((ret_val = e1000_config_dsp_after_link_change(hw, TRUE))) {
- DEBUGOUT("Error Configuring DSP after link up\n");
- return ret_val;
- }
- }
- #endif
- DEBUGOUT("Valid link established!!!\n");
- return E1000_SUCCESS;
- }
- 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)
- {
- int32_t ret_val;
- uint16_t mii_autoneg_adv_reg;
- uint16_t mii_1000t_ctrl_reg;
-
- DEBUGFUNC("e1000_phy_setup_autoneg");
-
- /* Read the MII Auto-Neg Advertisement Register (Address 4). */
- if((ret_val = e1000_read_phy_reg(hw, PHY_AUTONEG_ADV,
- &mii_autoneg_adv_reg)))
- return ret_val;
-
- /* Read the MII 1000Base-T Control Register (Address 9). */
- if((ret_val = e1000_read_phy_reg(hw, PHY_1000T_CTRL, &mii_1000t_ctrl_reg)))
- return ret_val;
-
- /* 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;
-
- DEBUGOUT1("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((ret_val = e1000_write_phy_reg(hw, PHY_AUTONEG_ADV,
- mii_autoneg_adv_reg)))
- return ret_val;
-
- DEBUGOUT1("Auto-Neg Advertising %x\n", mii_autoneg_adv_reg);
-
- if((ret_val = e1000_write_phy_reg(hw, PHY_1000T_CTRL, mii_1000t_ctrl_reg)))
- return ret_val;
-
- return E1000_SUCCESS;
- }
-
- /******************************************************************************
- * 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;
- int32_t ret_val;
- uint16_t phy_data;
-
- DEBUGFUNC("e1000_config_mac_to_phy");
-
- /* 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 (hw->phy_type == e1000_phy_igp) {
- if((ret_val = e1000_read_phy_reg(hw, IGP01E1000_PHY_PORT_STATUS,
- &phy_data)))
- return ret_val;
-
- if(phy_data & IGP01E1000_PSSR_FULL_DUPLEX) 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 & IGP01E1000_PSSR_SPEED_MASK) ==
- IGP01E1000_PSSR_SPEED_1000MBPS)
- ctrl |= E1000_CTRL_SPD_1000;
- else if((phy_data & IGP01E1000_PSSR_SPEED_MASK) ==
- IGP01E1000_PSSR_SPEED_100MBPS)
- ctrl |= E1000_CTRL_SPD_100;
- } else {
- if((ret_val = e1000_read_phy_reg(hw, M88E1000_PHY_SPEC_STATUS,
- &phy_data)))
- return ret_val;
-
- 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 E1000_SUCCESS;
- }
-
- /******************************************************************************
- * 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("e1000_force_mac_fc");
-
- /* 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 E1000_SUCCESS;
- }
-
- /******************************************************************************
- * 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("e1000_config_fc_after_link_up");
-
- /* 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)) ||
- ((hw->media_type == e1000_media_type_internal_serdes) && (hw->autoneg_failed))) {
- if((ret_val = e1000_force_mac_fc(hw))) {
- 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((ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg)))
- return ret_val;
- if((ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &mii_status_reg)))
- return ret_val;
-
- 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((ret_val = e1000_read_phy_reg(hw, PHY_AUTONEG_ADV,
- &mii_nway_adv_reg)))
- return ret_val;
- if((ret_val = e1000_read_phy_reg(hw, PHY_LP_ABILITY,
- &mii_nway_lp_ability_reg)))
- return ret_val;
-
- /* 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 0
- if(hw->original_fc == e1000_fc_full) {
- hw->fc = e1000_fc_full;
- #else
- if(hw->fc == e1000_fc_full) {
- #endif
- 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.
- */
- #if 0
- else if(hw->original_fc == e1000_fc_none ||
- hw->original_fc == e1000_fc_tx_pause) {
- #else
- else if(hw->fc == e1000_fc_none)
- DEBUGOUT("Flow Control = NONE.\r\n");
- else if(hw->fc == e1000_fc_tx_pause) {
- #endif
- 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.
- */
- if((ret_val = e1000_force_mac_fc(hw))) {
- DEBUGOUT("Error forcing flow control settings\n");
- return ret_val;
- }
- } else {
- DEBUGOUT("Copper PHY and Auto Neg has not completed.\r\n");
- }
- }
- return E1000_SUCCESS;
- }
-
- /******************************************************************************
- * 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 e1000_hw *hw)
- {
- uint32_t rxcw;
- uint32_t ctrl;
- uint32_t status;
- uint32_t rctl;
- uint32_t signal = 0;
- int32_t ret_val;
- uint16_t phy_data;
- uint16_t lp_capability;
-
- DEBUGFUNC("e1000_check_for_link");
-
- /* On adapters with a MAC newer than 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. This applies to fiber media only.
- */
- if(hw->media_type == e1000_media_type_fiber)
- signal = (hw->mac_type > e1000_82544) ? E1000_CTRL_SWDPIN1 : 0;
-
- ctrl = E1000_READ_REG(hw, CTRL);
- status = E1000_READ_REG(hw, STATUS);
- rxcw = E1000_READ_REG(hw, 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 0
- if((hw->media_type == e1000_media_type_copper) && hw->get_link_status) {
- #else
- if(hw->media_type == e1000_media_type_copper) {
- #endif
- /* 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((ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data)))
- return ret_val;
- if((ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data)))
- return ret_val;
-
- if(phy_data & MII_SR_LINK_STATUS) {
- #if 0
- hw->get_link_status = FALSE;
- #endif
- } 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 {
- if((ret_val = e1000_config_mac_to_phy(hw))) {
- 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.
- */
- if((ret_val = e1000_config_fc_after_link_up(hw))) {
- 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((ret_val = e1000_read_phy_reg(hw, PHY_LP_ABILITY,
- &lp_capability)))
- return ret_val;
- 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) &&
- ((ctrl & E1000_CTRL_SWDPIN1) == signal)) ||
- (hw->media_type == e1000_media_type_internal_serdes)) &&
- (!(status & E1000_STATUS_LU)) &&
- (!(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. */
- if((ret_val = e1000_config_fc_after_link_up(hw))) {
- 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) ||
- (hw->media_type == e1000_media_type_internal_serdes)) &&
- (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));
- }
- #if 0
- /* If we force link for non-auto-negotiation switch, check link status
- * based on MAC synchronization for internal serdes media type.
- */
- else if((hw->media_type == e1000_media_type_internal_serdes) &&
- !(E1000_TXCW_ANE & E1000_READ_REG(hw, TXCW))) {
- /* SYNCH bit and IV bit are sticky. */
- udelay(10);
- if(E1000_RXCW_SYNCH & E1000_READ_REG(hw, RXCW)) {
- if(!(rxcw & E1000_RXCW_IV)) {
- hw->serdes_link_down = FALSE;
- DEBUGOUT("SERDES: Link is up.\n");
- }
- } else {
- hw->serdes_link_down = TRUE;
- DEBUGOUT("SERDES: Link is down.\n");
- }
- }
- #endif
- return E1000_SUCCESS;
- }
-
- /******************************************************************************
- * 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("e1000_get_speed_and_duplex");
-
- 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)
- {
- int32_t ret_val;
- uint16_t i;
- uint16_t phy_data;
-
- DEBUGFUNC("e1000_wait_autoneg");
- 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((ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data)))
- return ret_val;
- if((ret_val = e1000_read_phy_reg(hw, PHY_STATUS, &phy_data)))
- return ret_val;
- if(phy_data & MII_SR_AUTONEG_COMPLETE) {
- DEBUGOUT("Auto-Neg complete.\n");
- return E1000_SUCCESS;
- }
- 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 10 microseconds.
- */
- E1000_WRITE_REG(hw, CTRL, (*ctrl | E1000_CTRL_MDC));
- E1000_WRITE_FLUSH(hw);
- udelay(10);
- }
-
- /******************************************************************************
- * 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 10 microseconds.
- */
- E1000_WRITE_REG(hw, CTRL, (*ctrl & ~E1000_CTRL_MDC));
- E1000_WRITE_FLUSH(hw);
- udelay(10);
- }
-
- /******************************************************************************
- * 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(10);
-
- 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, if the value is on a specific non zero
- * page, sets the page first.
- *
- * 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 ret_val;
-
- DEBUGFUNC("e1000_read_phy_reg");
-
- if(hw->phy_type == e1000_phy_igp &&
- (reg_addr > MAX_PHY_MULTI_PAGE_REG)) {
- if((ret_val = e1000_write_phy_reg_ex(hw, IGP01E1000_PHY_PAGE_SELECT,
- (uint16_t)reg_addr)))
- return ret_val;
- }
-
- ret_val = e1000_read_phy_reg_ex(hw, IGP01E1000_PHY_PAGE_SELECT & reg_addr,
- phy_data);
-
- return ret_val;
- }
-
- static int
- e1000_read_phy_reg_ex(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;
-
- DEBUGFUNC("e1000_read_phy_reg_ex");
-
- if(reg_addr > MAX_PHY_REG_ADDRESS) {
- DEBUGOUT1("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(50);
- 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 E1000_SUCCESS;
- }
-
- /******************************************************************************
- * 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 ret_val;
-
- DEBUGFUNC("e1000_write_phy_reg");
-
- if(hw->phy_type == e1000_phy_igp &&
- (reg_addr > MAX_PHY_MULTI_PAGE_REG)) {
- if((ret_val = e1000_write_phy_reg_ex(hw, IGP01E1000_PHY_PAGE_SELECT,
- (uint16_t)reg_addr)))
- return ret_val;
- }
-
- ret_val = e1000_write_phy_reg_ex(hw, IGP01E1000_PHY_PAGE_SELECT & reg_addr,
- phy_data);
-
- return ret_val;
- }
-
- static int
- e1000_write_phy_reg_ex(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;
-
- DEBUGFUNC("e1000_write_phy_reg_ex");
-
- if(reg_addr > MAX_PHY_REG_ADDRESS) {
- DEBUGOUT1("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 < 640; i++) {
- udelay(5);
- 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 E1000_SUCCESS;
- }
-
- /******************************************************************************
- * 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, ctrl_ext;
-
- DEBUGFUNC("e1000_phy_hw_reset");
-
- 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)
- {
- int32_t ret_val;
- uint16_t phy_data;
-
- DEBUGFUNC("e1000_phy_reset");
-
- if(hw->mac_type != e1000_82541_rev_2) {
- if((ret_val = e1000_read_phy_reg(hw, PHY_CTRL, &phy_data)))
- return ret_val;
-
- phy_data |= MII_CR_RESET;
- if((ret_val = e1000_write_phy_reg(hw, PHY_CTRL, phy_data)))
- return ret_val;
-
- udelay(1);
- } else e1000_phy_hw_reset(hw);
-
- if(hw->phy_type == e1000_phy_igp)
- e1000_phy_init_script(hw);
-
- return E1000_SUCCESS;
- }
-
- /******************************************************************************
- * 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)
- {
- int32_t phy_init_status, ret_val;
- uint16_t phy_id_high, phy_id_low;
- boolean_t match = FALSE;
-
- DEBUGFUNC("e1000_detect_gig_phy");
-
- /* Read the PHY ID Registers to identify which PHY is onboard. */
- if((ret_val = e1000_read_phy_reg(hw, PHY_ID1, &phy_id_high)))
- return ret_val;
-
- hw->phy_id = (uint32_t) (phy_id_high << 16);
- udelay(20);
- if((ret_val = e1000_read_phy_reg(hw, PHY_ID2, &phy_id_low)))
- return ret_val;
-
- hw->phy_id |= (uint32_t) (phy_id_low & PHY_REVISION_MASK);
- #ifdef LINUX_DRIVER
- hw->phy_revision = (uint32_t) phy_id_low & ~PHY_REVISION_MASK;
- #endif
-
- 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_82545_rev_3:
- case e1000_82546:
- case e1000_82546_rev_3:
- if(hw->phy_id == M88E1011_I_PHY_ID) match = TRUE;
- break;
- case e1000_82541:
- case e1000_82541_rev_2:
- case e1000_82547:
- case e1000_82547_rev_2:
- if(hw->phy_id == IGP01E1000_I_PHY_ID) match = TRUE;
- break;
- default:
- DEBUGOUT1("Invalid MAC type %d\n", hw->mac_type);
- return -E1000_ERR_CONFIG;
- }
- phy_init_status = e1000_set_phy_type(hw);
-
- if ((match) && (phy_init_status == E1000_SUCCESS)) {
- DEBUGOUT1("PHY ID 0x%X detected\n", hw->phy_id);
- return E1000_SUCCESS;
- }
- DEBUGOUT1("Invalid PHY ID 0x%X\n", hw->phy_id);
- return -E1000_ERR_PHY;
- }
-
- /******************************************************************************
- * Sets up eeprom variables in the hw struct. Must be called after mac_type
- * is configured.
- *
- * hw - Struct containing variables accessed by shared code
- *****************************************************************************/
- static void
- e1000_init_eeprom_params(struct e1000_hw *hw)
- {
- struct e1000_eeprom_info *eeprom = &hw->eeprom;
- uint32_t eecd = E1000_READ_REG(hw, EECD);
- uint16_t eeprom_size;
-
- DEBUGFUNC("e1000_init_eeprom_params");
-
- switch (hw->mac_type) {
- case e1000_82542_rev2_0:
- case e1000_82542_rev2_1:
- case e1000_82543:
- case e1000_82544:
- eeprom->type = e1000_eeprom_microwire;
- eeprom->word_size = 64;
- eeprom->opcode_bits = 3;
- eeprom->address_bits = 6;
- eeprom->delay_usec = 50;
- break;
- case e1000_82540:
- case e1000_82545:
- case e1000_82545_rev_3:
- case e1000_82546:
- case e1000_82546_rev_3:
- eeprom->type = e1000_eeprom_microwire;
- eeprom->opcode_bits = 3;
- eeprom->delay_usec = 50;
- if(eecd & E1000_EECD_SIZE) {
- eeprom->word_size = 256;
- eeprom->address_bits = 8;
- } else {
- eeprom->word_size = 64;
- eeprom->address_bits = 6;
- }
- break;
- case e1000_82541:
- case e1000_82541_rev_2:
- case e1000_82547:
- case e1000_82547_rev_2:
- if (eecd & E1000_EECD_TYPE) {
- eeprom->type = e1000_eeprom_spi;
- if (eecd & E1000_EECD_ADDR_BITS) {
- eeprom->page_size = 32;
- eeprom->address_bits = 16;
- } else {
- eeprom->page_size = 8;
- eeprom->address_bits = 8;
- }
- } else {
- eeprom->type = e1000_eeprom_microwire;
- eeprom->opcode_bits = 3;
- eeprom->delay_usec = 50;
- if (eecd & E1000_EECD_ADDR_BITS) {
- eeprom->word_size = 256;
- eeprom->address_bits = 8;
- } else {
- eeprom->word_size = 64;
- eeprom->address_bits = 6;
- }
- }
- break;
- default:
- eeprom->type = e1000_eeprom_spi;
- if (eecd & E1000_EECD_ADDR_BITS) {
- eeprom->page_size = 32;
- eeprom->address_bits = 16;
- } else {
- eeprom->page_size = 8;
- eeprom->address_bits = 8;
- }
- break;
- }
-
- if (eeprom->type == e1000_eeprom_spi) {
- eeprom->opcode_bits = 8;
- eeprom->delay_usec = 1;
- eeprom->word_size = 64;
- if (e1000_read_eeprom(hw, EEPROM_CFG, 1, &eeprom_size) == 0) {
- eeprom_size &= EEPROM_SIZE_MASK;
-
- switch (eeprom_size) {
- case EEPROM_SIZE_16KB:
- eeprom->word_size = 8192;
- break;
- case EEPROM_SIZE_8KB:
- eeprom->word_size = 4096;
- break;
- case EEPROM_SIZE_4KB:
- eeprom->word_size = 2048;
- break;
- case EEPROM_SIZE_2KB:
- eeprom->word_size = 1024;
- break;
- case EEPROM_SIZE_1KB:
- eeprom->word_size = 512;
- break;
- case EEPROM_SIZE_512B:
- eeprom->word_size = 256;
- break;
- case EEPROM_SIZE_128B:
- default:
- break;
- }
- }
- }
- }
-
- /**
- * e1000_reset - Reset the adapter
- */
-
- static int
- e1000_reset(struct e1000_hw *hw)
- {
- uint32_t pba;
- /* Repartition Pba for greater than 9k mtu
- * To take effect CTRL.RST is required.
- */
-
- if(hw->mac_type < e1000_82547) {
- pba = E1000_PBA_48K;
- } else {
- pba = E1000_PBA_30K;
- }
- E1000_WRITE_REG(hw, PBA, pba);
-
- /* flow control settings */
- #if 0
- hw->fc_high_water = FC_DEFAULT_HI_THRESH;
- hw->fc_low_water = FC_DEFAULT_LO_THRESH;
- hw->fc_pause_time = FC_DEFAULT_TX_TIMER;
- hw->fc_send_xon = 1;
- hw->fc = hw->original_fc;
- #endif
-
- e1000_reset_hw(hw);
- if(hw->mac_type >= e1000_82544)
- E1000_WRITE_REG(hw, WUC, 0);
- return e1000_init_hw(hw);
- }
-
- /**
- * e1000_sw_init - Initialize general software structures (struct e1000_adapter)
- * @adapter: board private structure to initialize
- *
- * 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 pci_device *pdev, struct e1000_hw *hw)
- {
- int result;
-
- /* PCI config space info */
- pci_read_config_word(pdev, PCI_VENDOR_ID, &hw->vendor_id);
- pci_read_config_word(pdev, PCI_DEVICE_ID, &hw->device_id);
- pci_read_config_byte(pdev, PCI_REVISION, &hw->revision_id);
- #if 0
- pci_read_config_word(pdev, PCI_SUBSYSTEM_VENDOR_ID,
- &hw->subsystem_vendor_id);
- pci_read_config_word(pdev, PCI_SUBSYSTEM_ID, &hw->subsystem_id);
- #endif
-
- pci_read_config_word(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;
- }
-
- /* initialize eeprom parameters */
-
- e1000_init_eeprom_params(hw);
-
- #if 0
- if((hw->mac_type == e1000_82541) ||
- (hw->mac_type == e1000_82547) ||
- (hw->mac_type == e1000_82541_rev_2) ||
- (hw->mac_type == e1000_82547_rev_2))
- hw->phy_init_script = 1;
- #endif
-
- e1000_set_media_type(hw);
-
- #if 0
- if(hw->mac_type < e1000_82543)
- hw->report_tx_early = 0;
- else
- hw->report_tx_early = 1;
-
- hw->wait_autoneg_complete = FALSE;
- #endif
- hw->tbi_compatibility_en = TRUE;
- #if 0
- hw->adaptive_ifs = TRUE;
-
- /* Copper options */
-
- if(hw->media_type == e1000_media_type_copper) {
- hw->mdix = AUTO_ALL_MODES;
- hw->disable_polarity_correction = FALSE;
- hw->master_slave = E1000_MASTER_SLAVE;
- }
- #endif
- return E1000_SUCCESS;
- }
-
- static void fill_rx (void)
- {
- 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 = virt_to_bus(&packet);
- E1000_WRITE_REG (&hw, RDT, rx_tail);
- }
-
- static void init_descriptor (void)
- {
- unsigned long ptr;
- unsigned long tctl;
-
- ptr = virt_to_phys(tx_pool);
- if (ptr & 0xf)
- ptr = (ptr + 0x10) & (~0xf);
-
- tx_base = phys_to_virt(ptr);
-
- E1000_WRITE_REG (&hw, TDBAL, virt_to_bus(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;
-
- /* Program the Transmit Control Register */
-
- #ifdef LINUX_DRIVER_TCTL
- tctl = E1000_READ_REG(&hw, TCTL);
-
- tctl &= ~E1000_TCTL_CT;
- tctl |= E1000_TCTL_EN | E1000_TCTL_PSP |
- (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT);
- #else
- tctl = E1000_TCTL_PSP | E1000_TCTL_EN |
- (E1000_COLLISION_THRESHOLD << E1000_CT_SHIFT) |
- (E1000_HDX_COLLISION_DISTANCE << E1000_COLD_SHIFT);
- #endif
-
- E1000_WRITE_REG (&hw, TCTL, tctl);
-
- e1000_config_collision_dist(&hw);
-
-
- rx_tail = 0;
- /* disable receive */
- E1000_WRITE_REG (&hw, RCTL, 0);
- ptr = virt_to_phys(rx_pool);
- if (ptr & 0xf)
- ptr = (ptr + 0x10) & (~0xf);
- rx_base = phys_to_virt(ptr);
-
- /* Setup the Base and Length of the Rx Descriptor Ring */
-
- E1000_WRITE_REG (&hw, RDBAL, virt_to_bus(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);
-
- E1000_WRITE_REG (&hw, RCTL,
- E1000_RCTL_EN |
- E1000_RCTL_BAM |
- E1000_RCTL_SZ_2048 |
- E1000_RCTL_MPE);
- fill_rx();
- }
-
-
-
- /**************************************************************************
- POLL - Wait for a frame
- ***************************************************************************/
- static int
- e1000_poll (struct nic *nic, int retrieve)
- {
- /* return true if there's an ethernet packet ready to read */
- /* nic->packet should contain data on return */
- /* nic->packetlen should contain length of data */
- struct e1000_rx_desc *rd;
- uint32_t icr;
-
- rd = rx_base + rx_last;
- if (!rd->status & E1000_RXD_STAT_DD)
- return 0;
-
- if ( ! retrieve ) return 1;
-
- // printf("recv: packet %! -> %! len=%d \n", packet+6, packet,rd->Length);
- memcpy (nic->packet, packet, rd->length);
- nic->packetlen = rd->length;
- fill_rx ();
-
- /* Acknowledge interrupt. */
- icr = E1000_READ_REG(&hw, ICR);
-
- return 1;
- }
-
- /**************************************************************************
- TRANSMIT - Transmit a frame
- ***************************************************************************/
- static void
- e1000_transmit (struct nic *nic, const char *d, /* Destination */
- unsigned int type, /* Type */
- unsigned int size, /* size */
- const char *p) /* Packet */
- {
- /* send the packet to destination */
- struct eth_hdr {
- unsigned char dst_addr[ETH_ALEN];
- unsigned char src_addr[ETH_ALEN];
- unsigned short type;
- } hdr;
- struct e1000_tx_desc *txhd; /* header */
- struct e1000_tx_desc *txp; /* payload */
- DEBUGFUNC("send");
-
- memcpy (&hdr.dst_addr, d, ETH_ALEN);
- memcpy (&hdr.src_addr, nic->node_addr, ETH_ALEN);
-
- hdr.type = htons (type);
- txhd = tx_base + tx_tail;
- tx_tail = (tx_tail + 1) % 8;
- txp = tx_base + tx_tail;
- tx_tail = (tx_tail + 1) % 8;
-
- txhd->buffer_addr = virt_to_bus (&hdr);
- txhd->lower.data = sizeof (hdr);
- txhd->upper.data = 0;
-
- txp->buffer_addr = virt_to_bus(p);
- txp->lower.data = E1000_TXD_CMD_RPS | E1000_TXD_CMD_EOP | E1000_TXD_CMD_IFCS | size;
- txp->upper.data = 0;
-
- E1000_WRITE_REG (&hw, TDT, tx_tail);
- while (!(txp->upper.data & E1000_TXD_STAT_DD)) {
- udelay(10); /* give the nic a chance to write to the register */
- poll_interruptions();
- }
- DEBUGFUNC("send end");
- }
-
-
- /**************************************************************************
- DISABLE - Turn off ethernet interface
- ***************************************************************************/
- static void e1000_disable (struct dev *dev __unused)
- {
- /* 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 */
- switch(hw.mac_type) {
- case e1000_82544:
- case e1000_82540:
- case e1000_82545:
- case e1000_82546:
- case e1000_82541:
- case e1000_82541_rev_2:
- /* These controllers can't ack the 64-bit write when issuing the
- * reset, so use IO-mapping as a workaround to issue the reset */
- E1000_WRITE_REG_IO(&hw, CTRL, E1000_CTRL_RST);
- break;
- case e1000_82545_rev_3:
- case e1000_82546_rev_3:
- /* Reset is performed on a shadow of the control register */
- E1000_WRITE_REG(&hw, CTRL_DUP, E1000_CTRL_RST);
- break;
- default:
- E1000_WRITE_REG(&hw, CTRL, E1000_CTRL_RST);
- break;
- }
-
- /* Turn off the ethernet interface */
- E1000_WRITE_REG (&hw, RCTL, 0);
- E1000_WRITE_REG (&hw, TCTL, 0);
- mdelay (10);
-
- /* Unmap my window to the device */
- iounmap(hw.hw_addr);
- }
-
- /**************************************************************************
- IRQ - Enable, Disable, or Force interrupts
- ***************************************************************************/
- static void e1000_irq(struct nic *nic __unused, irq_action_t action)
- {
- switch ( action ) {
- case DISABLE :
- E1000_WRITE_REG(&hw, IMC, ~0);
- E1000_WRITE_FLUSH(&hw);
- break;
- case ENABLE :
- E1000_WRITE_REG(&hw, IMS,
- E1000_IMS_RXT0 | E1000_IMS_RXSEQ);
- E1000_WRITE_FLUSH(&hw);
- break;
- case FORCE :
- E1000_WRITE_REG(&hw, ICS, E1000_ICS_RXT0);
- break;
- }
- }
-
- #define IORESOURCE_IO 0x00000100 /* Resource type */
- #define BAR_0 0
- #define BAR_1 1
- #define BAR_5 5
-
- /**************************************************************************
- 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
- ***************************************************************************/
- static int e1000_probe(struct dev *dev, struct pci_device *p)
- {
- struct nic *nic = (struct nic *)dev;
- unsigned long mmio_start, mmio_len;
- int ret_val, i;
-
- if (p == 0)
- return 0;
- /* Initialize hw with default values */
- memset(&hw, 0, sizeof(hw));
- hw.pdev = p;
-
- #if 1
- /* Are these variables needed? */
- hw.fc = e1000_fc_none;
- #if 0
- hw.original_fc = e1000_fc_none;
- #endif
- hw.autoneg_failed = 0;
- #if 0
- hw.get_link_status = TRUE;
- #endif
- #endif
-
- mmio_start = pci_bar_start(p, PCI_BASE_ADDRESS_0);
- mmio_len = pci_bar_size(p, PCI_BASE_ADDRESS_0);
- hw.hw_addr = ioremap(mmio_start, mmio_len);
-
- for(i = BAR_1; i <= BAR_5; i++) {
- if(pci_bar_size(p, i) == 0)
- continue;
- if(pci_find_capability(p, i) & IORESOURCE_IO) {
- hw.io_base = pci_bar_start(p, i);
- break;
- }
- }
-
- adjust_pci_device(p);
-
- nic->ioaddr = p->ioaddr & ~3;
- nic->irqno = p->irq;
-
- /* From Matt Hortman <mbhortman@acpthinclient.com> */
- /* MAC and Phy settings */
-
- /* setup the private structure */
- if (e1000_sw_init(p, &hw) < 0) {
- iounmap(hw.hw_addr);
- return 0;
- }
-
- /* make sure the EEPROM is good */
-
- if (e1000_validate_eeprom_checksum(&hw) < 0) {
- printf ("The EEPROM Checksum Is Not Valid\n");
- iounmap(hw.hw_addr);
- return 0;
- }
-
- /* copy the MAC address out of the EEPROM */
-
- e1000_read_mac_addr(&hw);
- memcpy (nic->node_addr, hw.mac_addr, ETH_ALEN);
-
- printf("Ethernet addr: %!\n", nic->node_addr);
-
- /* reset the hardware with the new settings */
-
- ret_val = e1000_reset(&hw);
- 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");
- }
- iounmap(hw.hw_addr);
- return 0;
- }
- init_descriptor();
-
- /* point to NIC specific routines */
- dev->disable = e1000_disable;
- nic->poll = e1000_poll;
- nic->transmit = e1000_transmit;
- nic->irq = e1000_irq;
-
- return 1;
- }
-
- static struct pci_id e1000_nics[] = {
- PCI_ROM(0x8086, 0x1000, "e1000-82542", "Intel EtherExpressPro1000"),
- PCI_ROM(0x8086, 0x1001, "e1000-82543gc-fiber", "Intel EtherExpressPro1000 82543GC Fiber"),
- PCI_ROM(0x8086, 0x1004, "e1000-82543gc-copper", "Intel EtherExpressPro1000 82543GC Copper"),
- PCI_ROM(0x8086, 0x1008, "e1000-82544ei-copper", "Intel EtherExpressPro1000 82544EI Copper"),
- PCI_ROM(0x8086, 0x1009, "e1000-82544ei-fiber", "Intel EtherExpressPro1000 82544EI Fiber"),
- PCI_ROM(0x8086, 0x100C, "e1000-82544gc-copper", "Intel EtherExpressPro1000 82544GC Copper"),
- PCI_ROM(0x8086, 0x100D, "e1000-82544gc-lom", "Intel EtherExpressPro1000 82544GC LOM"),
- PCI_ROM(0x8086, 0x100E, "e1000-82540em", "Intel EtherExpressPro1000 82540EM"),
- PCI_ROM(0x8086, 0x100F, "e1000-82545em-copper", "Intel EtherExpressPro1000 82545EM Copper"),
- PCI_ROM(0x8086, 0x1010, "e1000-82546eb-copper", "Intel EtherExpressPro1000 82546EB Copper"),
- PCI_ROM(0x8086, 0x1011, "e1000-82545em-fiber", "Intel EtherExpressPro1000 82545EM Fiber"),
- PCI_ROM(0x8086, 0x1012, "e1000-82546eb-fiber", "Intel EtherExpressPro1000 82546EB Copper"),
- PCI_ROM(0x8086, 0x1013, "e1000-82541ei", "Intel EtherExpressPro1000 82541EI"),
- PCI_ROM(0x8086, 0x1015, "e1000-82540em-lom", "Intel EtherExpressPro1000 82540EM LOM"),
- PCI_ROM(0x8086, 0x1016, "e1000-82540ep-lom", "Intel EtherExpressPro1000 82540EP LOM"),
- PCI_ROM(0x8086, 0x1017, "e1000-82540ep", "Intel EtherExpressPro1000 82540EP"),
- PCI_ROM(0x8086, 0x1018, "e1000-82541ep", "Intel EtherExpressPro1000 82541EP"),
- PCI_ROM(0x8086, 0x1019, "e1000-82547ei", "Intel EtherExpressPro1000 82547EI"),
- PCI_ROM(0x8086, 0x101d, "e1000-82546eb-quad-copper", "Intel EtherExpressPro1000 82546EB Quad Copper"),
- PCI_ROM(0x8086, 0x101e, "e1000-82540ep-lp", "Intel EtherExpressPro1000 82540EP LP"),
- PCI_ROM(0x8086, 0x1026, "e1000-82545gm-copper", "Intel EtherExpressPro1000 82545GM Copper"),
- PCI_ROM(0x8086, 0x1027, "e1000-82545gm-fiber", "Intel EtherExpressPro1000 82545GM Fiber"),
- PCI_ROM(0x8086, 0x1028, "e1000-82545gm-serdes", "Intel EtherExpressPro1000 82545GM SERDES"),
- PCI_ROM(0x8086, 0x1075, "e1000-82547gi", "Intel EtherExpressPro1000 82547GI"),
- PCI_ROM(0x8086, 0x1076, "e1000-82541gi", "Intel EtherExpressPro1000 82541GI"),
- PCI_ROM(0x8086, 0x1077, "e1000-82541gi-mobile", "Intel EtherExpressPro1000 82541GI Mobile"),
- PCI_ROM(0x8086, 0x1078, "e1000-82541er", "Intel EtherExpressPro1000 82541ER"),
- PCI_ROM(0x8086, 0x1079, "e1000-82546gb-copper", "Intel EtherExpressPro1000 82546GB Copper"),
- PCI_ROM(0x8086, 0x107a, "e1000-82546gb-fiber", "Intel EtherExpressPro1000 82546GB Fiber"),
- PCI_ROM(0x8086, 0x107b, "e1000-82546gb-serdes", "Intel EtherExpressPro1000 82546GB SERDES"),
- };
-
- static struct pci_driver e1000_driver =
- PCI_DRIVER ( "E1000", e1000_nics, PCI_NO_CLASS );
-
- BOOT_DRIVER ( "E1000", e1000_probe );
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