2 * Copyright(c) 2007 Atheros Corporation. All rights reserved.
4 * Derived from Intel e1000 driver
5 * Copyright(c) 1999 - 2005 Intel Corporation. All rights reserved.
7 * This program is free software; you can redistribute it and/or modify it
8 * under the terms of the GNU General Public License as published by the Free
9 * Software Foundation; either version 2 of the License, or (at your option)
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
17 * You should have received a copy of the GNU General Public License along with
18 * this program; if not, write to the Free Software Foundation, Inc., 59
19 * Temple Place - Suite 330, Boston, MA 02111-1307, USA.
21 #include <linux/pci.h>
22 #include <linux/delay.h>
23 #include <linux/mii.h>
24 #include <linux/crc32.h>
30 * return 0 if eeprom exist
32 int atl1e_check_eeprom_exist(struct atl1e_hw *hw)
36 value = AT_READ_REG(hw, REG_SPI_FLASH_CTRL);
37 if (value & SPI_FLASH_CTRL_EN_VPD) {
38 value &= ~SPI_FLASH_CTRL_EN_VPD;
39 AT_WRITE_REG(hw, REG_SPI_FLASH_CTRL, value);
41 value = AT_READ_REGW(hw, REG_PCIE_CAP_LIST);
42 return ((value & 0xFF00) == 0x6C00) ? 0 : 1;
45 void atl1e_hw_set_mac_addr(struct atl1e_hw *hw)
53 value = (((u32)hw->mac_addr[2]) << 24) |
54 (((u32)hw->mac_addr[3]) << 16) |
55 (((u32)hw->mac_addr[4]) << 8) |
56 (((u32)hw->mac_addr[5])) ;
57 AT_WRITE_REG_ARRAY(hw, REG_MAC_STA_ADDR, 0, value);
59 value = (((u32)hw->mac_addr[0]) << 8) |
60 (((u32)hw->mac_addr[1])) ;
61 AT_WRITE_REG_ARRAY(hw, REG_MAC_STA_ADDR, 1, value);
65 * atl1e_get_permanent_address
66 * return 0 if get valid mac address,
68 static int atl1e_get_permanent_address(struct atl1e_hw *hw)
73 u8 eth_addr[ETH_ALEN];
75 if (is_valid_ether_addr(hw->perm_mac_addr))
79 addr[0] = addr[1] = 0;
81 if (!atl1e_check_eeprom_exist(hw)) {
83 twsi_ctrl_data = AT_READ_REG(hw, REG_TWSI_CTRL);
84 twsi_ctrl_data |= TWSI_CTRL_SW_LDSTART;
85 AT_WRITE_REG(hw, REG_TWSI_CTRL, twsi_ctrl_data);
86 for (i = 0; i < AT_TWSI_EEPROM_TIMEOUT; i++) {
88 twsi_ctrl_data = AT_READ_REG(hw, REG_TWSI_CTRL);
89 if ((twsi_ctrl_data & TWSI_CTRL_SW_LDSTART) == 0)
92 if (i >= AT_TWSI_EEPROM_TIMEOUT)
93 return AT_ERR_TIMEOUT;
96 /* maybe MAC-address is from BIOS */
97 addr[0] = AT_READ_REG(hw, REG_MAC_STA_ADDR);
98 addr[1] = AT_READ_REG(hw, REG_MAC_STA_ADDR + 4);
99 *(u32 *) ð_addr[2] = swab32(addr[0]);
100 *(u16 *) ð_addr[0] = swab16(*(u16 *)&addr[1]);
102 if (is_valid_ether_addr(eth_addr)) {
103 memcpy(hw->perm_mac_addr, eth_addr, ETH_ALEN);
107 return AT_ERR_EEPROM;
110 bool atl1e_write_eeprom(struct atl1e_hw *hw, u32 offset, u32 value)
115 bool atl1e_read_eeprom(struct atl1e_hw *hw, u32 offset, u32 *p_value)
121 return false; /* address do not align */
123 AT_WRITE_REG(hw, REG_VPD_DATA, 0);
124 control = (offset & VPD_CAP_VPD_ADDR_MASK) << VPD_CAP_VPD_ADDR_SHIFT;
125 AT_WRITE_REG(hw, REG_VPD_CAP, control);
127 for (i = 0; i < 10; i++) {
129 control = AT_READ_REG(hw, REG_VPD_CAP);
130 if (control & VPD_CAP_VPD_FLAG)
133 if (control & VPD_CAP_VPD_FLAG) {
134 *p_value = AT_READ_REG(hw, REG_VPD_DATA);
137 return false; /* timeout */
140 void atl1e_force_ps(struct atl1e_hw *hw)
142 AT_WRITE_REGW(hw, REG_GPHY_CTRL,
143 GPHY_CTRL_PW_WOL_DIS | GPHY_CTRL_EXT_RESET);
147 * Reads the adapter's MAC address from the EEPROM
149 * hw - Struct containing variables accessed by shared code
151 int atl1e_read_mac_addr(struct atl1e_hw *hw)
155 err = atl1e_get_permanent_address(hw);
157 return AT_ERR_EEPROM;
158 memcpy(hw->mac_addr, hw->perm_mac_addr, sizeof(hw->perm_mac_addr));
165 * set hash value for a multicast address
166 * hash calcu processing :
167 * 1. calcu 32bit CRC for multicast address
168 * 2. reverse crc with MSB to LSB
170 u32 atl1e_hash_mc_addr(struct atl1e_hw *hw, u8 *mc_addr)
176 crc32 = ether_crc_le(6, mc_addr);
178 for (i = 0; i < 32; i++)
179 value |= (((crc32 >> i) & 1) << (31 - i));
185 * Sets the bit in the multicast table corresponding to the hash value.
186 * hw - Struct containing variables accessed by shared code
187 * hash_value - Multicast address hash value
189 void atl1e_hash_set(struct atl1e_hw *hw, u32 hash_value)
191 u32 hash_bit, hash_reg;
195 * The HASH Table is a register array of 2 32-bit registers.
196 * It is treated like an array of 64 bits. We want to set
197 * bit BitArray[hash_value]. So we figure out what register
198 * the bit is in, read it, OR in the new bit, then write
199 * back the new value. The register is determined by the
200 * upper 7 bits of the hash value and the bit within that
201 * register are determined by the lower 5 bits of the value.
203 hash_reg = (hash_value >> 31) & 0x1;
204 hash_bit = (hash_value >> 26) & 0x1F;
206 mta = AT_READ_REG_ARRAY(hw, REG_RX_HASH_TABLE, hash_reg);
208 mta |= (1 << hash_bit);
210 AT_WRITE_REG_ARRAY(hw, REG_RX_HASH_TABLE, hash_reg, mta);
213 * Reads the value from a PHY register
214 * hw - Struct containing variables accessed by shared code
215 * reg_addr - address of the PHY register to read
217 int atl1e_read_phy_reg(struct atl1e_hw *hw, u16 reg_addr, u16 *phy_data)
222 val = ((u32)(reg_addr & MDIO_REG_ADDR_MASK)) << MDIO_REG_ADDR_SHIFT |
223 MDIO_START | MDIO_SUP_PREAMBLE | MDIO_RW |
224 MDIO_CLK_25_4 << MDIO_CLK_SEL_SHIFT;
226 AT_WRITE_REG(hw, REG_MDIO_CTRL, val);
230 for (i = 0; i < MDIO_WAIT_TIMES; i++) {
232 val = AT_READ_REG(hw, REG_MDIO_CTRL);
233 if (!(val & (MDIO_START | MDIO_BUSY)))
237 if (!(val & (MDIO_START | MDIO_BUSY))) {
238 *phy_data = (u16)val;
246 * Writes a value to a PHY register
247 * hw - Struct containing variables accessed by shared code
248 * reg_addr - address of the PHY register to write
249 * data - data to write to the PHY
251 int atl1e_write_phy_reg(struct atl1e_hw *hw, u32 reg_addr, u16 phy_data)
256 val = ((u32)(phy_data & MDIO_DATA_MASK)) << MDIO_DATA_SHIFT |
257 (reg_addr&MDIO_REG_ADDR_MASK) << MDIO_REG_ADDR_SHIFT |
260 MDIO_CLK_25_4 << MDIO_CLK_SEL_SHIFT;
262 AT_WRITE_REG(hw, REG_MDIO_CTRL, val);
265 for (i = 0; i < MDIO_WAIT_TIMES; i++) {
267 val = AT_READ_REG(hw, REG_MDIO_CTRL);
268 if (!(val & (MDIO_START | MDIO_BUSY)))
273 if (!(val & (MDIO_START | MDIO_BUSY)))
280 * atl1e_init_pcie - init PCIE module
282 static void atl1e_init_pcie(struct atl1e_hw *hw)
285 /* comment 2lines below to save more power when sususpend
286 value = LTSSM_TEST_MODE_DEF;
287 AT_WRITE_REG(hw, REG_LTSSM_TEST_MODE, value);
290 /* pcie flow control mode change */
291 value = AT_READ_REG(hw, 0x1008);
293 AT_WRITE_REG(hw, 0x1008, value);
296 * Configures PHY autoneg and flow control advertisement settings
298 * hw - Struct containing variables accessed by shared code
300 static int atl1e_phy_setup_autoneg_adv(struct atl1e_hw *hw)
303 u16 mii_autoneg_adv_reg;
304 u16 mii_1000t_ctrl_reg;
306 if (0 != hw->mii_autoneg_adv_reg)
308 /* Read the MII Auto-Neg Advertisement Register (Address 4/9). */
309 mii_autoneg_adv_reg = MII_AR_DEFAULT_CAP_MASK;
310 mii_1000t_ctrl_reg = MII_AT001_CR_1000T_DEFAULT_CAP_MASK;
313 * Need to parse autoneg_advertised and set up
314 * the appropriate PHY registers. First we will parse for
315 * autoneg_advertised software override. Since we can advertise
316 * a plethora of combinations, we need to check each bit
321 * First we clear all the 10/100 mb speed bits in the Auto-Neg
322 * Advertisement Register (Address 4) and the 1000 mb speed bits in
323 * the 1000Base-T control Register (Address 9).
325 mii_autoneg_adv_reg &= ~MII_AR_SPEED_MASK;
326 mii_1000t_ctrl_reg &= ~MII_AT001_CR_1000T_SPEED_MASK;
329 * Need to parse MediaType and setup the
330 * appropriate PHY registers.
332 switch (hw->media_type) {
333 case MEDIA_TYPE_AUTO_SENSOR:
334 mii_autoneg_adv_reg |= (MII_AR_10T_HD_CAPS |
336 MII_AR_100TX_HD_CAPS |
337 MII_AR_100TX_FD_CAPS);
338 hw->autoneg_advertised = ADVERTISE_10_HALF |
342 if (hw->nic_type == athr_l1e) {
343 mii_1000t_ctrl_reg |=
344 MII_AT001_CR_1000T_FD_CAPS;
345 hw->autoneg_advertised |= ADVERTISE_1000_FULL;
349 case MEDIA_TYPE_100M_FULL:
350 mii_autoneg_adv_reg |= MII_AR_100TX_FD_CAPS;
351 hw->autoneg_advertised = ADVERTISE_100_FULL;
354 case MEDIA_TYPE_100M_HALF:
355 mii_autoneg_adv_reg |= MII_AR_100TX_HD_CAPS;
356 hw->autoneg_advertised = ADVERTISE_100_HALF;
359 case MEDIA_TYPE_10M_FULL:
360 mii_autoneg_adv_reg |= MII_AR_10T_FD_CAPS;
361 hw->autoneg_advertised = ADVERTISE_10_FULL;
365 mii_autoneg_adv_reg |= MII_AR_10T_HD_CAPS;
366 hw->autoneg_advertised = ADVERTISE_10_HALF;
370 /* flow control fixed to enable all */
371 mii_autoneg_adv_reg |= (MII_AR_ASM_DIR | MII_AR_PAUSE);
373 hw->mii_autoneg_adv_reg = mii_autoneg_adv_reg;
374 hw->mii_1000t_ctrl_reg = mii_1000t_ctrl_reg;
376 ret_val = atl1e_write_phy_reg(hw, MII_ADVERTISE, mii_autoneg_adv_reg);
380 if (hw->nic_type == athr_l1e || hw->nic_type == athr_l2e_revA) {
381 ret_val = atl1e_write_phy_reg(hw, MII_AT001_CR,
392 * Resets the PHY and make all config validate
394 * hw - Struct containing variables accessed by shared code
396 * Sets bit 15 and 12 of the MII control regiser (for F001 bug)
398 int atl1e_phy_commit(struct atl1e_hw *hw)
400 struct atl1e_adapter *adapter = hw->adapter;
401 struct pci_dev *pdev = adapter->pdev;
405 phy_data = MII_CR_RESET | MII_CR_AUTO_NEG_EN | MII_CR_RESTART_AUTO_NEG;
407 ret_val = atl1e_write_phy_reg(hw, MII_BMCR, phy_data);
411 /**************************************
412 * pcie serdes link may be down !
413 **************************************/
414 for (i = 0; i < 25; i++) {
416 val = AT_READ_REG(hw, REG_MDIO_CTRL);
417 if (!(val & (MDIO_START | MDIO_BUSY)))
421 if (0 != (val & (MDIO_START | MDIO_BUSY))) {
423 "pcie linkdown at least for 25ms\n");
427 dev_err(&pdev->dev, "pcie linkup after %d ms\n", i);
432 int atl1e_phy_init(struct atl1e_hw *hw)
434 struct atl1e_adapter *adapter = hw->adapter;
435 struct pci_dev *pdev = adapter->pdev;
439 if (hw->phy_configured) {
440 if (hw->re_autoneg) {
441 hw->re_autoneg = false;
442 return atl1e_restart_autoneg(hw);
447 /* RESET GPHY Core */
448 AT_WRITE_REGW(hw, REG_GPHY_CTRL, GPHY_CTRL_DEFAULT);
450 AT_WRITE_REGW(hw, REG_GPHY_CTRL, GPHY_CTRL_DEFAULT |
451 GPHY_CTRL_EXT_RESET);
455 /* p1. eable hibernation mode */
456 ret_val = atl1e_write_phy_reg(hw, MII_DBG_ADDR, 0xB);
459 ret_val = atl1e_write_phy_reg(hw, MII_DBG_DATA, 0xBC00);
462 /* p2. set Class A/B for all modes */
463 ret_val = atl1e_write_phy_reg(hw, MII_DBG_ADDR, 0);
467 /* remove Class AB */
468 /* phy_val = hw->emi_ca ? 0x02ef : 0x02df; */
469 ret_val = atl1e_write_phy_reg(hw, MII_DBG_DATA, phy_val);
473 ret_val = atl1e_write_phy_reg(hw, MII_DBG_ADDR, 0x12);
476 ret_val = atl1e_write_phy_reg(hw, MII_DBG_DATA, 0x4C04);
479 /* p4. 1000T power */
480 ret_val = atl1e_write_phy_reg(hw, MII_DBG_ADDR, 0x4);
483 ret_val = atl1e_write_phy_reg(hw, MII_DBG_DATA, 0x8BBB);
487 ret_val = atl1e_write_phy_reg(hw, MII_DBG_ADDR, 0x5);
490 ret_val = atl1e_write_phy_reg(hw, MII_DBG_DATA, 0x2C46);
496 /*Enable PHY LinkChange Interrupt */
497 ret_val = atl1e_write_phy_reg(hw, MII_INT_CTRL, 0xC00);
499 dev_err(&pdev->dev, "Error enable PHY linkChange Interrupt\n");
502 /* setup AutoNeg parameters */
503 ret_val = atl1e_phy_setup_autoneg_adv(hw);
505 dev_err(&pdev->dev, "Error Setting up Auto-Negotiation\n");
508 /* SW.Reset & En-Auto-Neg to restart Auto-Neg*/
509 dev_dbg(&pdev->dev, "Restarting Auto-Neg");
510 ret_val = atl1e_phy_commit(hw);
512 dev_err(&pdev->dev, "Error Resetting the phy");
516 hw->phy_configured = true;
522 * Reset the transmit and receive units; mask and clear all interrupts.
523 * hw - Struct containing variables accessed by shared code
524 * return : 0 or idle status (if error)
526 int atl1e_reset_hw(struct atl1e_hw *hw)
528 struct atl1e_adapter *adapter = hw->adapter;
529 struct pci_dev *pdev = adapter->pdev;
531 u32 idle_status_data = 0;
532 u16 pci_cfg_cmd_word = 0;
535 /* Workaround for PCI problem when BIOS sets MMRBC incorrectly. */
536 pci_read_config_word(pdev, PCI_REG_COMMAND, &pci_cfg_cmd_word);
537 if ((pci_cfg_cmd_word & (CMD_IO_SPACE |
538 CMD_MEMORY_SPACE | CMD_BUS_MASTER))
539 != (CMD_IO_SPACE | CMD_MEMORY_SPACE | CMD_BUS_MASTER)) {
540 pci_cfg_cmd_word |= (CMD_IO_SPACE |
541 CMD_MEMORY_SPACE | CMD_BUS_MASTER);
542 pci_write_config_word(pdev, PCI_REG_COMMAND, pci_cfg_cmd_word);
546 * Issue Soft Reset to the MAC. This will reset the chip's
547 * transmit, receive, DMA. It will not effect
548 * the current PCI configuration. The global reset bit is self-
549 * clearing, and should clear within a microsecond.
551 AT_WRITE_REG(hw, REG_MASTER_CTRL,
552 MASTER_CTRL_LED_MODE | MASTER_CTRL_SOFT_RST);
556 /* Wait at least 10ms for All module to be Idle */
557 for (timeout = 0; timeout < AT_HW_MAX_IDLE_DELAY; timeout++) {
558 idle_status_data = AT_READ_REG(hw, REG_IDLE_STATUS);
559 if (idle_status_data == 0)
565 if (timeout >= AT_HW_MAX_IDLE_DELAY) {
567 "MAC state machine cann't be idle since"
568 " disabled for 10ms second\n");
569 return AT_ERR_TIMEOUT;
577 * Performs basic configuration of the adapter.
579 * hw - Struct containing variables accessed by shared code
580 * Assumes that the controller has previously been reset and is in a
581 * post-reset uninitialized state. Initializes multicast table,
582 * and Calls routines to setup link
583 * Leaves the transmit and receive units disabled and uninitialized.
585 int atl1e_init_hw(struct atl1e_hw *hw)
591 /* Zero out the Multicast HASH table */
592 /* clear the old settings from the multicast hash table */
593 AT_WRITE_REG(hw, REG_RX_HASH_TABLE, 0);
594 AT_WRITE_REG_ARRAY(hw, REG_RX_HASH_TABLE, 1, 0);
596 ret_val = atl1e_phy_init(hw);
602 * Detects the current speed and duplex settings of the hardware.
604 * hw - Struct containing variables accessed by shared code
605 * speed - Speed of the connection
606 * duplex - Duplex setting of the connection
608 int atl1e_get_speed_and_duplex(struct atl1e_hw *hw, u16 *speed, u16 *duplex)
613 /* Read PHY Specific Status Register (17) */
614 err = atl1e_read_phy_reg(hw, MII_AT001_PSSR, &phy_data);
618 if (!(phy_data & MII_AT001_PSSR_SPD_DPLX_RESOLVED))
619 return AT_ERR_PHY_RES;
621 switch (phy_data & MII_AT001_PSSR_SPEED) {
622 case MII_AT001_PSSR_1000MBS:
625 case MII_AT001_PSSR_100MBS:
628 case MII_AT001_PSSR_10MBS:
632 return AT_ERR_PHY_SPEED;
636 if (phy_data & MII_AT001_PSSR_DPLX)
637 *duplex = FULL_DUPLEX;
639 *duplex = HALF_DUPLEX;
644 int atl1e_restart_autoneg(struct atl1e_hw *hw)
648 err = atl1e_write_phy_reg(hw, MII_ADVERTISE, hw->mii_autoneg_adv_reg);
652 if (hw->nic_type == athr_l1e || hw->nic_type == athr_l2e_revA) {
653 err = atl1e_write_phy_reg(hw, MII_AT001_CR,
654 hw->mii_1000t_ctrl_reg);
659 err = atl1e_write_phy_reg(hw, MII_BMCR,
660 MII_CR_RESET | MII_CR_AUTO_NEG_EN |
661 MII_CR_RESTART_AUTO_NEG);