1 /*******************************************************************************
3 Intel 10 Gigabit PCI Express Linux driver
4 Copyright(c) 1999 - 2007 Intel Corporation.
6 This program is free software; you can redistribute it and/or modify it
7 under the terms and conditions of the GNU General Public License,
8 version 2, as published by the Free Software Foundation.
10 This program is distributed in the hope it will be useful, but WITHOUT
11 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 You should have received a copy of the GNU General Public License along with
16 this program; if not, write to the Free Software Foundation, Inc.,
17 51 Franklin St - Fifth Floor, Boston, MA 02110-1301 USA.
19 The full GNU General Public License is included in this distribution in
20 the file called "COPYING".
23 Linux NICS <linux.nics@intel.com>
24 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
25 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
27 *******************************************************************************/
29 #include <linux/pci.h>
30 #include <linux/delay.h>
31 #include <linux/sched.h>
33 #include "ixgbe_common.h"
34 #include "ixgbe_phy.h"
36 static s32 ixgbe_clear_hw_cntrs(struct ixgbe_hw *hw);
38 static s32 ixgbe_poll_eeprom_eerd_done(struct ixgbe_hw *hw);
39 static s32 ixgbe_get_eeprom_semaphore(struct ixgbe_hw *hw);
40 static void ixgbe_release_eeprom_semaphore(struct ixgbe_hw *hw);
41 static u16 ixgbe_calc_eeprom_checksum(struct ixgbe_hw *hw);
43 static s32 ixgbe_clear_vfta(struct ixgbe_hw *hw);
44 static s32 ixgbe_init_rx_addrs(struct ixgbe_hw *hw);
45 static s32 ixgbe_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr);
46 static void ixgbe_add_mc_addr(struct ixgbe_hw *hw, u8 *mc_addr);
49 * ixgbe_start_hw - Prepare hardware for TX/RX
50 * @hw: pointer to hardware structure
52 * Starts the hardware by filling the bus info structure and media type, clears
53 * all on chip counters, initializes receive address registers, multicast
54 * table, VLAN filter table, calls routine to set up link and flow control
55 * settings, and leaves transmit and receive units disabled and uninitialized
57 s32 ixgbe_start_hw(struct ixgbe_hw *hw)
61 /* Set the media type */
62 hw->phy.media_type = hw->mac.ops.get_media_type(hw);
64 /* Identify the PHY */
65 ixgbe_identify_phy(hw);
68 * Store MAC address from RAR0, clear receive address registers, and
69 * clear the multicast table
71 ixgbe_init_rx_addrs(hw);
73 /* Clear the VLAN filter table */
77 hw->mac.ops.setup_link(hw);
79 /* Clear statistics registers */
80 ixgbe_clear_hw_cntrs(hw);
82 /* Set No Snoop Disable */
83 ctrl_ext = IXGBE_READ_REG(hw, IXGBE_CTRL_EXT);
84 ctrl_ext |= IXGBE_CTRL_EXT_NS_DIS;
85 IXGBE_WRITE_REG(hw, IXGBE_CTRL_EXT, ctrl_ext);
86 IXGBE_WRITE_FLUSH(hw);
88 /* Clear adapter stopped flag */
89 hw->adapter_stopped = false;
95 * ixgbe_init_hw - Generic hardware initialization
96 * @hw: pointer to hardware structure
98 * Initialize the hardware by reseting the hardware, filling the bus info
99 * structure and media type, clears all on chip counters, initializes receive
100 * address registers, multicast table, VLAN filter table, calls routine to set
101 * up link and flow control settings, and leaves transmit and receive units
102 * disabled and uninitialized
104 s32 ixgbe_init_hw(struct ixgbe_hw *hw)
106 /* Reset the hardware */
107 hw->mac.ops.reset(hw);
116 * ixgbe_clear_hw_cntrs - Generic clear hardware counters
117 * @hw: pointer to hardware structure
119 * Clears all hardware statistics counters by reading them from the hardware
120 * Statistics counters are clear on read.
122 static s32 ixgbe_clear_hw_cntrs(struct ixgbe_hw *hw)
126 IXGBE_READ_REG(hw, IXGBE_CRCERRS);
127 IXGBE_READ_REG(hw, IXGBE_ILLERRC);
128 IXGBE_READ_REG(hw, IXGBE_ERRBC);
129 IXGBE_READ_REG(hw, IXGBE_MSPDC);
130 for (i = 0; i < 8; i++)
131 IXGBE_READ_REG(hw, IXGBE_MPC(i));
133 IXGBE_READ_REG(hw, IXGBE_MLFC);
134 IXGBE_READ_REG(hw, IXGBE_MRFC);
135 IXGBE_READ_REG(hw, IXGBE_RLEC);
136 IXGBE_READ_REG(hw, IXGBE_LXONTXC);
137 IXGBE_READ_REG(hw, IXGBE_LXONRXC);
138 IXGBE_READ_REG(hw, IXGBE_LXOFFTXC);
139 IXGBE_READ_REG(hw, IXGBE_LXOFFRXC);
141 for (i = 0; i < 8; i++) {
142 IXGBE_READ_REG(hw, IXGBE_PXONTXC(i));
143 IXGBE_READ_REG(hw, IXGBE_PXONRXC(i));
144 IXGBE_READ_REG(hw, IXGBE_PXOFFTXC(i));
145 IXGBE_READ_REG(hw, IXGBE_PXOFFRXC(i));
148 IXGBE_READ_REG(hw, IXGBE_PRC64);
149 IXGBE_READ_REG(hw, IXGBE_PRC127);
150 IXGBE_READ_REG(hw, IXGBE_PRC255);
151 IXGBE_READ_REG(hw, IXGBE_PRC511);
152 IXGBE_READ_REG(hw, IXGBE_PRC1023);
153 IXGBE_READ_REG(hw, IXGBE_PRC1522);
154 IXGBE_READ_REG(hw, IXGBE_GPRC);
155 IXGBE_READ_REG(hw, IXGBE_BPRC);
156 IXGBE_READ_REG(hw, IXGBE_MPRC);
157 IXGBE_READ_REG(hw, IXGBE_GPTC);
158 IXGBE_READ_REG(hw, IXGBE_GORCL);
159 IXGBE_READ_REG(hw, IXGBE_GORCH);
160 IXGBE_READ_REG(hw, IXGBE_GOTCL);
161 IXGBE_READ_REG(hw, IXGBE_GOTCH);
162 for (i = 0; i < 8; i++)
163 IXGBE_READ_REG(hw, IXGBE_RNBC(i));
164 IXGBE_READ_REG(hw, IXGBE_RUC);
165 IXGBE_READ_REG(hw, IXGBE_RFC);
166 IXGBE_READ_REG(hw, IXGBE_ROC);
167 IXGBE_READ_REG(hw, IXGBE_RJC);
168 IXGBE_READ_REG(hw, IXGBE_MNGPRC);
169 IXGBE_READ_REG(hw, IXGBE_MNGPDC);
170 IXGBE_READ_REG(hw, IXGBE_MNGPTC);
171 IXGBE_READ_REG(hw, IXGBE_TORL);
172 IXGBE_READ_REG(hw, IXGBE_TORH);
173 IXGBE_READ_REG(hw, IXGBE_TPR);
174 IXGBE_READ_REG(hw, IXGBE_TPT);
175 IXGBE_READ_REG(hw, IXGBE_PTC64);
176 IXGBE_READ_REG(hw, IXGBE_PTC127);
177 IXGBE_READ_REG(hw, IXGBE_PTC255);
178 IXGBE_READ_REG(hw, IXGBE_PTC511);
179 IXGBE_READ_REG(hw, IXGBE_PTC1023);
180 IXGBE_READ_REG(hw, IXGBE_PTC1522);
181 IXGBE_READ_REG(hw, IXGBE_MPTC);
182 IXGBE_READ_REG(hw, IXGBE_BPTC);
183 for (i = 0; i < 16; i++) {
184 IXGBE_READ_REG(hw, IXGBE_QPRC(i));
185 IXGBE_READ_REG(hw, IXGBE_QBRC(i));
186 IXGBE_READ_REG(hw, IXGBE_QPTC(i));
187 IXGBE_READ_REG(hw, IXGBE_QBTC(i));
194 * ixgbe_get_mac_addr - Generic get MAC address
195 * @hw: pointer to hardware structure
196 * @mac_addr: Adapter MAC address
198 * Reads the adapter's MAC address from first Receive Address Register (RAR0)
199 * A reset of the adapter must be performed prior to calling this function
200 * in order for the MAC address to have been loaded from the EEPROM into RAR0
202 s32 ixgbe_get_mac_addr(struct ixgbe_hw *hw, u8 *mac_addr)
208 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(0));
209 rar_low = IXGBE_READ_REG(hw, IXGBE_RAL(0));
211 for (i = 0; i < 4; i++)
212 mac_addr[i] = (u8)(rar_low >> (i*8));
214 for (i = 0; i < 2; i++)
215 mac_addr[i+4] = (u8)(rar_high >> (i*8));
220 s32 ixgbe_read_part_num(struct ixgbe_hw *hw, u32 *part_num)
225 ret_val = ixgbe_read_eeprom(hw, IXGBE_PBANUM0_PTR, &data);
227 hw_dbg(hw, "NVM Read Error\n");
230 *part_num = (u32)(data << 16);
232 ret_val = ixgbe_read_eeprom(hw, IXGBE_PBANUM1_PTR, &data);
234 hw_dbg(hw, "NVM Read Error\n");
243 * ixgbe_stop_adapter - Generic stop TX/RX units
244 * @hw: pointer to hardware structure
246 * Sets the adapter_stopped flag within ixgbe_hw struct. Clears interrupts,
247 * disables transmit and receive units. The adapter_stopped flag is used by
248 * the shared code and drivers to determine if the adapter is in a stopped
249 * state and should not touch the hardware.
251 s32 ixgbe_stop_adapter(struct ixgbe_hw *hw)
253 u32 number_of_queues;
258 * Set the adapter_stopped flag so other driver functions stop touching
261 hw->adapter_stopped = true;
263 /* Disable the receive unit */
264 reg_val = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
265 reg_val &= ~(IXGBE_RXCTRL_RXEN);
266 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, reg_val);
269 /* Clear interrupt mask to stop from interrupts being generated */
270 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_IRQ_CLEAR_MASK);
272 /* Clear any pending interrupts */
273 IXGBE_READ_REG(hw, IXGBE_EICR);
275 /* Disable the transmit unit. Each queue must be disabled. */
276 number_of_queues = hw->mac.num_tx_queues;
277 for (i = 0; i < number_of_queues; i++) {
278 reg_val = IXGBE_READ_REG(hw, IXGBE_TXDCTL(i));
279 if (reg_val & IXGBE_TXDCTL_ENABLE) {
280 reg_val &= ~IXGBE_TXDCTL_ENABLE;
281 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(i), reg_val);
289 * ixgbe_led_on - Turns on the software controllable LEDs.
290 * @hw: pointer to hardware structure
291 * @index: led number to turn on
293 s32 ixgbe_led_on(struct ixgbe_hw *hw, u32 index)
295 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
297 /* To turn on the LED, set mode to ON. */
298 led_reg &= ~IXGBE_LED_MODE_MASK(index);
299 led_reg |= IXGBE_LED_ON << IXGBE_LED_MODE_SHIFT(index);
300 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
301 IXGBE_WRITE_FLUSH(hw);
307 * ixgbe_led_off - Turns off the software controllable LEDs.
308 * @hw: pointer to hardware structure
309 * @index: led number to turn off
311 s32 ixgbe_led_off(struct ixgbe_hw *hw, u32 index)
313 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
315 /* To turn off the LED, set mode to OFF. */
316 led_reg &= ~IXGBE_LED_MODE_MASK(index);
317 led_reg |= IXGBE_LED_OFF << IXGBE_LED_MODE_SHIFT(index);
318 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
319 IXGBE_WRITE_FLUSH(hw);
326 * ixgbe_init_eeprom - Initialize EEPROM params
327 * @hw: pointer to hardware structure
329 * Initializes the EEPROM parameters ixgbe_eeprom_info within the
330 * ixgbe_hw struct in order to set up EEPROM access.
332 s32 ixgbe_init_eeprom(struct ixgbe_hw *hw)
334 struct ixgbe_eeprom_info *eeprom = &hw->eeprom;
338 if (eeprom->type == ixgbe_eeprom_uninitialized) {
339 eeprom->type = ixgbe_eeprom_none;
342 * Check for EEPROM present first.
343 * If not present leave as none
345 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
346 if (eec & IXGBE_EEC_PRES) {
347 eeprom->type = ixgbe_eeprom_spi;
350 * SPI EEPROM is assumed here. This code would need to
351 * change if a future EEPROM is not SPI.
353 eeprom_size = (u16)((eec & IXGBE_EEC_SIZE) >>
354 IXGBE_EEC_SIZE_SHIFT);
355 eeprom->word_size = 1 << (eeprom_size +
356 IXGBE_EEPROM_WORD_SIZE_SHIFT);
359 if (eec & IXGBE_EEC_ADDR_SIZE)
360 eeprom->address_bits = 16;
362 eeprom->address_bits = 8;
363 hw_dbg(hw, "Eeprom params: type = %d, size = %d, address bits: "
364 "%d\n", eeprom->type, eeprom->word_size,
365 eeprom->address_bits);
372 * ixgbe_read_eeprom - Read EEPROM word using EERD
373 * @hw: pointer to hardware structure
374 * @offset: offset of word in the EEPROM to read
375 * @data: word read from the EEPROM
377 * Reads a 16 bit word from the EEPROM using the EERD register.
379 s32 ixgbe_read_eeprom(struct ixgbe_hw *hw, u16 offset, u16 *data)
384 eerd = (offset << IXGBE_EEPROM_READ_ADDR_SHIFT) +
385 IXGBE_EEPROM_READ_REG_START;
387 IXGBE_WRITE_REG(hw, IXGBE_EERD, eerd);
388 status = ixgbe_poll_eeprom_eerd_done(hw);
391 *data = (IXGBE_READ_REG(hw, IXGBE_EERD) >>
392 IXGBE_EEPROM_READ_REG_DATA);
394 hw_dbg(hw, "Eeprom read timed out\n");
400 * ixgbe_poll_eeprom_eerd_done - Poll EERD status
401 * @hw: pointer to hardware structure
403 * Polls the status bit (bit 1) of the EERD to determine when the read is done.
405 static s32 ixgbe_poll_eeprom_eerd_done(struct ixgbe_hw *hw)
409 s32 status = IXGBE_ERR_EEPROM;
411 for (i = 0; i < IXGBE_EERD_ATTEMPTS; i++) {
412 reg = IXGBE_READ_REG(hw, IXGBE_EERD);
413 if (reg & IXGBE_EEPROM_READ_REG_DONE) {
423 * ixgbe_get_eeprom_semaphore - Get hardware semaphore
424 * @hw: pointer to hardware structure
426 * Sets the hardware semaphores so EEPROM access can occur for bit-bang method
428 static s32 ixgbe_get_eeprom_semaphore(struct ixgbe_hw *hw)
430 s32 status = IXGBE_ERR_EEPROM;
435 /* Set timeout value based on size of EEPROM */
436 timeout = hw->eeprom.word_size + 1;
438 /* Get SMBI software semaphore between device drivers first */
439 for (i = 0; i < timeout; i++) {
441 * If the SMBI bit is 0 when we read it, then the bit will be
442 * set and we have the semaphore
444 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
445 if (!(swsm & IXGBE_SWSM_SMBI)) {
452 /* Now get the semaphore between SW/FW through the SWESMBI bit */
454 for (i = 0; i < timeout; i++) {
455 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
457 /* Set the SW EEPROM semaphore bit to request access */
458 swsm |= IXGBE_SWSM_SWESMBI;
459 IXGBE_WRITE_REG(hw, IXGBE_SWSM, swsm);
462 * If we set the bit successfully then we got the
465 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
466 if (swsm & IXGBE_SWSM_SWESMBI)
473 * Release semaphores and return error if SW EEPROM semaphore
474 * was not granted because we don't have access to the EEPROM
477 hw_dbg(hw, "Driver can't access the Eeprom - Semaphore "
479 ixgbe_release_eeprom_semaphore(hw);
480 status = IXGBE_ERR_EEPROM;
488 * ixgbe_release_eeprom_semaphore - Release hardware semaphore
489 * @hw: pointer to hardware structure
491 * This function clears hardware semaphore bits.
493 static void ixgbe_release_eeprom_semaphore(struct ixgbe_hw *hw)
497 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
499 /* Release both semaphores by writing 0 to the bits SWESMBI and SMBI */
500 swsm &= ~(IXGBE_SWSM_SWESMBI | IXGBE_SWSM_SMBI);
501 IXGBE_WRITE_REG(hw, IXGBE_SWSM, swsm);
502 IXGBE_WRITE_FLUSH(hw);
506 * ixgbe_calc_eeprom_checksum - Calculates and returns the checksum
507 * @hw: pointer to hardware structure
509 static u16 ixgbe_calc_eeprom_checksum(struct ixgbe_hw *hw)
518 /* Include 0x0-0x3F in the checksum */
519 for (i = 0; i < IXGBE_EEPROM_CHECKSUM; i++) {
520 if (ixgbe_read_eeprom(hw, i, &word) != 0) {
521 hw_dbg(hw, "EEPROM read failed\n");
527 /* Include all data from pointers except for the fw pointer */
528 for (i = IXGBE_PCIE_ANALOG_PTR; i < IXGBE_FW_PTR; i++) {
529 ixgbe_read_eeprom(hw, i, &pointer);
531 /* Make sure the pointer seems valid */
532 if (pointer != 0xFFFF && pointer != 0) {
533 ixgbe_read_eeprom(hw, pointer, &length);
535 if (length != 0xFFFF && length != 0) {
536 for (j = pointer+1; j <= pointer+length; j++) {
537 ixgbe_read_eeprom(hw, j, &word);
544 checksum = (u16)IXGBE_EEPROM_SUM - checksum;
550 * ixgbe_validate_eeprom_checksum - Validate EEPROM checksum
551 * @hw: pointer to hardware structure
552 * @checksum_val: calculated checksum
554 * Performs checksum calculation and validates the EEPROM checksum. If the
555 * caller does not need checksum_val, the value can be NULL.
557 s32 ixgbe_validate_eeprom_checksum(struct ixgbe_hw *hw, u16 *checksum_val)
561 u16 read_checksum = 0;
564 * Read the first word from the EEPROM. If this times out or fails, do
565 * not continue or we could be in for a very long wait while every
568 status = ixgbe_read_eeprom(hw, 0, &checksum);
571 checksum = ixgbe_calc_eeprom_checksum(hw);
573 ixgbe_read_eeprom(hw, IXGBE_EEPROM_CHECKSUM, &read_checksum);
576 * Verify read checksum from EEPROM is the same as
577 * calculated checksum
579 if (read_checksum != checksum)
580 status = IXGBE_ERR_EEPROM_CHECKSUM;
582 /* If the user cares, return the calculated checksum */
584 *checksum_val = checksum;
586 hw_dbg(hw, "EEPROM read failed\n");
593 * ixgbe_validate_mac_addr - Validate MAC address
594 * @mac_addr: pointer to MAC address.
596 * Tests a MAC address to ensure it is a valid Individual Address
598 s32 ixgbe_validate_mac_addr(u8 *mac_addr)
602 /* Make sure it is not a multicast address */
603 if (IXGBE_IS_MULTICAST(mac_addr))
604 status = IXGBE_ERR_INVALID_MAC_ADDR;
605 /* Not a broadcast address */
606 else if (IXGBE_IS_BROADCAST(mac_addr))
607 status = IXGBE_ERR_INVALID_MAC_ADDR;
608 /* Reject the zero address */
609 else if (mac_addr[0] == 0 && mac_addr[1] == 0 && mac_addr[2] == 0 &&
610 mac_addr[3] == 0 && mac_addr[4] == 0 && mac_addr[5] == 0)
611 status = IXGBE_ERR_INVALID_MAC_ADDR;
617 * ixgbe_set_rar - Set RX address register
618 * @hw: pointer to hardware structure
619 * @addr: Address to put into receive address register
620 * @index: Receive address register to write
621 * @vind: Vind to set RAR to
622 * @enable_addr: set flag that address is active
624 * Puts an ethernet address into a receive address register.
626 s32 ixgbe_set_rar(struct ixgbe_hw *hw, u32 index, u8 *addr, u32 vind,
629 u32 rar_low, rar_high;
632 * HW expects these in little endian so we reverse the byte order from
633 * network order (big endian) to little endian
635 rar_low = ((u32)addr[0] |
636 ((u32)addr[1] << 8) |
637 ((u32)addr[2] << 16) |
638 ((u32)addr[3] << 24));
640 rar_high = ((u32)addr[4] |
641 ((u32)addr[5] << 8) |
642 ((vind << IXGBE_RAH_VIND_SHIFT) & IXGBE_RAH_VIND_MASK));
644 if (enable_addr != 0)
645 rar_high |= IXGBE_RAH_AV;
647 IXGBE_WRITE_REG(hw, IXGBE_RAL(index), rar_low);
648 IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high);
654 * ixgbe_init_rx_addrs - Initializes receive address filters.
655 * @hw: pointer to hardware structure
657 * Places the MAC address in receive address register 0 and clears the rest
658 * of the receive addresss registers. Clears the multicast table. Assumes
659 * the receiver is in reset when the routine is called.
661 static s32 ixgbe_init_rx_addrs(struct ixgbe_hw *hw)
664 u32 rar_entries = hw->mac.num_rx_addrs;
667 * If the current mac address is valid, assume it is a software override
668 * to the permanent address.
669 * Otherwise, use the permanent address from the eeprom.
671 if (ixgbe_validate_mac_addr(hw->mac.addr) ==
672 IXGBE_ERR_INVALID_MAC_ADDR) {
673 /* Get the MAC address from the RAR0 for later reference */
674 ixgbe_get_mac_addr(hw, hw->mac.addr);
676 hw_dbg(hw, " Keeping Current RAR0 Addr =%.2X %.2X %.2X ",
677 hw->mac.addr[0], hw->mac.addr[1],
679 hw_dbg(hw, "%.2X %.2X %.2X\n", hw->mac.addr[3],
680 hw->mac.addr[4], hw->mac.addr[5]);
682 /* Setup the receive address. */
683 hw_dbg(hw, "Overriding MAC Address in RAR[0]\n");
684 hw_dbg(hw, " New MAC Addr =%.2X %.2X %.2X ",
685 hw->mac.addr[0], hw->mac.addr[1],
687 hw_dbg(hw, "%.2X %.2X %.2X\n", hw->mac.addr[3],
688 hw->mac.addr[4], hw->mac.addr[5]);
690 ixgbe_set_rar(hw, 0, hw->mac.addr, 0, IXGBE_RAH_AV);
693 hw->addr_ctrl.rar_used_count = 1;
695 /* Zero out the other receive addresses. */
696 hw_dbg(hw, "Clearing RAR[1-15]\n");
697 for (i = 1; i < rar_entries; i++) {
698 IXGBE_WRITE_REG(hw, IXGBE_RAL(i), 0);
699 IXGBE_WRITE_REG(hw, IXGBE_RAH(i), 0);
703 hw->addr_ctrl.mc_addr_in_rar_count = 0;
704 hw->addr_ctrl.mta_in_use = 0;
705 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, hw->mac.mc_filter_type);
707 hw_dbg(hw, " Clearing MTA\n");
708 for (i = 0; i < IXGBE_MC_TBL_SIZE; i++)
709 IXGBE_WRITE_REG(hw, IXGBE_MTA(i), 0);
715 * ixgbe_mta_vector - Determines bit-vector in multicast table to set
716 * @hw: pointer to hardware structure
717 * @mc_addr: the multicast address
719 * Extracts the 12 bits, from a multicast address, to determine which
720 * bit-vector to set in the multicast table. The hardware uses 12 bits, from
721 * incoming rx multicast addresses, to determine the bit-vector to check in
722 * the MTA. Which of the 4 combination, of 12-bits, the hardware uses is set
723 * by the MO field of the MCSTCTRL. The MO field is set during initalization
726 static s32 ixgbe_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr)
730 switch (hw->mac.mc_filter_type) {
731 case 0: /* use bits [47:36] of the address */
732 vector = ((mc_addr[4] >> 4) | (((u16)mc_addr[5]) << 4));
734 case 1: /* use bits [46:35] of the address */
735 vector = ((mc_addr[4] >> 3) | (((u16)mc_addr[5]) << 5));
737 case 2: /* use bits [45:34] of the address */
738 vector = ((mc_addr[4] >> 2) | (((u16)mc_addr[5]) << 6));
740 case 3: /* use bits [43:32] of the address */
741 vector = ((mc_addr[4]) | (((u16)mc_addr[5]) << 8));
743 default: /* Invalid mc_filter_type */
744 hw_dbg(hw, "MC filter type param set incorrectly\n");
748 /* vector can only be 12-bits or boundary will be exceeded */
754 * ixgbe_set_mta - Set bit-vector in multicast table
755 * @hw: pointer to hardware structure
756 * @hash_value: Multicast address hash value
758 * Sets the bit-vector in the multicast table.
760 static void ixgbe_set_mta(struct ixgbe_hw *hw, u8 *mc_addr)
767 hw->addr_ctrl.mta_in_use++;
769 vector = ixgbe_mta_vector(hw, mc_addr);
770 hw_dbg(hw, " bit-vector = 0x%03X\n", vector);
773 * The MTA is a register array of 128 32-bit registers. It is treated
774 * like an array of 4096 bits. We want to set bit
775 * BitArray[vector_value]. So we figure out what register the bit is
776 * in, read it, OR in the new bit, then write back the new value. The
777 * register is determined by the upper 7 bits of the vector value and
778 * the bit within that register are determined by the lower 5 bits of
781 vector_reg = (vector >> 5) & 0x7F;
782 vector_bit = vector & 0x1F;
783 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
784 mta_reg |= (1 << vector_bit);
785 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
789 * ixgbe_add_mc_addr - Adds a multicast address.
790 * @hw: pointer to hardware structure
791 * @mc_addr: new multicast address
793 * Adds it to unused receive address register or to the multicast table.
795 static void ixgbe_add_mc_addr(struct ixgbe_hw *hw, u8 *mc_addr)
797 u32 rar_entries = hw->mac.num_rx_addrs;
799 hw_dbg(hw, " MC Addr =%.2X %.2X %.2X %.2X %.2X %.2X\n",
800 mc_addr[0], mc_addr[1], mc_addr[2],
801 mc_addr[3], mc_addr[4], mc_addr[5]);
804 * Place this multicast address in the RAR if there is room,
805 * else put it in the MTA
807 if (hw->addr_ctrl.rar_used_count < rar_entries) {
808 ixgbe_set_rar(hw, hw->addr_ctrl.rar_used_count,
809 mc_addr, 0, IXGBE_RAH_AV);
810 hw_dbg(hw, "Added a multicast address to RAR[%d]\n",
811 hw->addr_ctrl.rar_used_count);
812 hw->addr_ctrl.rar_used_count++;
813 hw->addr_ctrl.mc_addr_in_rar_count++;
815 ixgbe_set_mta(hw, mc_addr);
818 hw_dbg(hw, "ixgbe_add_mc_addr Complete\n");
822 * ixgbe_update_mc_addr_list - Updates MAC list of multicast addresses
823 * @hw: pointer to hardware structure
824 * @mc_addr_list: the list of new multicast addresses
825 * @mc_addr_count: number of addresses
826 * @pad: number of bytes between addresses in the list
828 * The given list replaces any existing list. Clears the MC addrs from receive
829 * address registers and the multicast table. Uses unsed receive address
830 * registers for the first multicast addresses, and hashes the rest into the
833 s32 ixgbe_update_mc_addr_list(struct ixgbe_hw *hw, u8 *mc_addr_list,
834 u32 mc_addr_count, u32 pad)
837 u32 rar_entries = hw->mac.num_rx_addrs;
840 * Set the new number of MC addresses that we are being requested to
843 hw->addr_ctrl.num_mc_addrs = mc_addr_count;
844 hw->addr_ctrl.rar_used_count -= hw->addr_ctrl.mc_addr_in_rar_count;
845 hw->addr_ctrl.mc_addr_in_rar_count = 0;
846 hw->addr_ctrl.mta_in_use = 0;
848 /* Zero out the other receive addresses. */
849 hw_dbg(hw, "Clearing RAR[1-15]\n");
850 for (i = hw->addr_ctrl.rar_used_count; i < rar_entries; i++) {
851 IXGBE_WRITE_REG(hw, IXGBE_RAL(i), 0);
852 IXGBE_WRITE_REG(hw, IXGBE_RAH(i), 0);
856 hw_dbg(hw, " Clearing MTA\n");
857 for (i = 0; i < IXGBE_MC_TBL_SIZE; i++)
858 IXGBE_WRITE_REG(hw, IXGBE_MTA(i), 0);
860 /* Add the new addresses */
861 for (i = 0; i < mc_addr_count; i++) {
862 hw_dbg(hw, " Adding the multicast addresses:\n");
863 ixgbe_add_mc_addr(hw, mc_addr_list +
864 (i * (IXGBE_ETH_LENGTH_OF_ADDRESS + pad)));
868 if (hw->addr_ctrl.mta_in_use > 0)
869 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL,
870 IXGBE_MCSTCTRL_MFE | hw->mac.mc_filter_type);
872 hw_dbg(hw, "ixgbe_update_mc_addr_list Complete\n");
877 * ixgbe_clear_vfta - Clear VLAN filter table
878 * @hw: pointer to hardware structure
880 * Clears the VLAN filer table, and the VMDq index associated with the filter
882 static s32 ixgbe_clear_vfta(struct ixgbe_hw *hw)
887 for (offset = 0; offset < IXGBE_VLAN_FILTER_TBL_SIZE; offset++)
888 IXGBE_WRITE_REG(hw, IXGBE_VFTA(offset), 0);
890 for (vlanbyte = 0; vlanbyte < 4; vlanbyte++)
891 for (offset = 0; offset < IXGBE_VLAN_FILTER_TBL_SIZE; offset++)
892 IXGBE_WRITE_REG(hw, IXGBE_VFTAVIND(vlanbyte, offset),
899 * ixgbe_set_vfta - Set VLAN filter table
900 * @hw: pointer to hardware structure
901 * @vlan: VLAN id to write to VLAN filter
902 * @vind: VMDq output index that maps queue to VLAN id in VFTA
903 * @vlan_on: boolean flag to turn on/off VLAN in VFTA
905 * Turn on/off specified VLAN in the VLAN filter table.
907 s32 ixgbe_set_vfta(struct ixgbe_hw *hw, u32 vlan, u32 vind,
915 /* Determine 32-bit word position in array */
916 VftaIndex = (vlan >> 5) & 0x7F; /* upper seven bits */
918 /* Determine the location of the (VMD) queue index */
919 VftaByte = ((vlan >> 3) & 0x03); /* bits (4:3) indicating byte array */
920 BitOffset = (vlan & 0x7) << 2; /* lower 3 bits indicate nibble */
922 /* Set the nibble for VMD queue index */
923 VftaReg = IXGBE_READ_REG(hw, IXGBE_VFTAVIND(VftaByte, VftaIndex));
924 VftaReg &= (~(0x0F << BitOffset));
925 VftaReg |= (vind << BitOffset);
926 IXGBE_WRITE_REG(hw, IXGBE_VFTAVIND(VftaByte, VftaIndex), VftaReg);
928 /* Determine the location of the bit for this VLAN id */
929 BitOffset = vlan & 0x1F; /* lower five bits */
931 VftaReg = IXGBE_READ_REG(hw, IXGBE_VFTA(VftaIndex));
933 /* Turn on this VLAN id */
934 VftaReg |= (1 << BitOffset);
936 /* Turn off this VLAN id */
937 VftaReg &= ~(1 << BitOffset);
938 IXGBE_WRITE_REG(hw, IXGBE_VFTA(VftaIndex), VftaReg);
944 * ixgbe_setup_fc - Configure flow control settings
945 * @hw: pointer to hardware structure
946 * @packetbuf_num: packet buffer number (0-7)
948 * Configures the flow control settings based on SW configuration.
949 * This function is used for 802.3x flow control configuration only.
951 s32 ixgbe_setup_fc(struct ixgbe_hw *hw, s32 packetbuf_num)
956 if (packetbuf_num < 0 || packetbuf_num > 7)
957 hw_dbg(hw, "Invalid packet buffer number [%d], expected range "
958 "is 0-7\n", packetbuf_num);
960 frctl_reg = IXGBE_READ_REG(hw, IXGBE_FCTRL);
961 frctl_reg &= ~(IXGBE_FCTRL_RFCE | IXGBE_FCTRL_RPFCE);
963 rmcs_reg = IXGBE_READ_REG(hw, IXGBE_RMCS);
964 rmcs_reg &= ~(IXGBE_RMCS_TFCE_PRIORITY | IXGBE_RMCS_TFCE_802_3X);
967 * We want to save off the original Flow Control configuration just in
968 * case we get disconnected and then reconnected into a different hub
969 * or switch with different Flow Control capabilities.
971 hw->fc.type = hw->fc.original_type;
974 * The possible values of the "flow_control" parameter are:
975 * 0: Flow control is completely disabled
976 * 1: Rx flow control is enabled (we can receive pause frames but not
977 * send pause frames).
978 * 2: Tx flow control is enabled (we can send pause frames but we do not
979 * support receiving pause frames)
980 * 3: Both Rx and TX flow control (symmetric) are enabled.
983 switch (hw->fc.type) {
986 case ixgbe_fc_rx_pause:
988 * RX Flow control is enabled,
989 * and TX Flow control is disabled.
991 frctl_reg |= IXGBE_FCTRL_RFCE;
993 case ixgbe_fc_tx_pause:
995 * TX Flow control is enabled, and RX Flow control is disabled,
996 * by a software over-ride.
998 rmcs_reg |= IXGBE_RMCS_TFCE_802_3X;
1002 * Flow control (both RX and TX) is enabled by a software
1005 frctl_reg |= IXGBE_FCTRL_RFCE;
1006 rmcs_reg |= IXGBE_RMCS_TFCE_802_3X;
1009 /* We should never get here. The value should be 0-3. */
1010 hw_dbg(hw, "Flow control param set incorrectly\n");
1014 /* Enable 802.3x based flow control settings. */
1015 IXGBE_WRITE_REG(hw, IXGBE_FCTRL, frctl_reg);
1016 IXGBE_WRITE_REG(hw, IXGBE_RMCS, rmcs_reg);
1019 * We need to set up the Receive Threshold high and low water
1020 * marks as well as (optionally) enabling the transmission of
1023 if (hw->fc.type & ixgbe_fc_tx_pause) {
1024 if (hw->fc.send_xon) {
1025 IXGBE_WRITE_REG(hw, IXGBE_FCRTL(packetbuf_num),
1026 (hw->fc.low_water | IXGBE_FCRTL_XONE));
1028 IXGBE_WRITE_REG(hw, IXGBE_FCRTL(packetbuf_num),
1031 IXGBE_WRITE_REG(hw, IXGBE_FCRTH(packetbuf_num),
1032 (hw->fc.high_water)|IXGBE_FCRTH_FCEN);
1035 IXGBE_WRITE_REG(hw, IXGBE_FCTTV(0), hw->fc.pause_time);
1036 IXGBE_WRITE_REG(hw, IXGBE_FCRTV, (hw->fc.pause_time >> 1));
1042 * ixgbe_disable_pcie_master - Disable PCI-express master access
1043 * @hw: pointer to hardware structure
1045 * Disables PCI-Express master access and verifies there are no pending
1046 * requests. IXGBE_ERR_MASTER_REQUESTS_PENDING is returned if master disable
1047 * bit hasn't caused the master requests to be disabled, else 0
1048 * is returned signifying master requests disabled.
1050 s32 ixgbe_disable_pcie_master(struct ixgbe_hw *hw)
1054 s32 status = IXGBE_ERR_MASTER_REQUESTS_PENDING;
1056 ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL);
1057 ctrl |= IXGBE_CTRL_GIO_DIS;
1058 IXGBE_WRITE_REG(hw, IXGBE_CTRL, ctrl);
1060 for (i = 0; i < IXGBE_PCI_MASTER_DISABLE_TIMEOUT; i++) {
1061 if (!(IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_GIO)) {
1073 * ixgbe_acquire_swfw_sync - Aquire SWFW semaphore
1074 * @hw: pointer to hardware structure
1075 * @mask: Mask to specify wich semaphore to acquire
1077 * Aquires the SWFW semaphore throught the GSSR register for the specified
1078 * function (CSR, PHY0, PHY1, EEPROM, Flash)
1080 s32 ixgbe_acquire_swfw_sync(struct ixgbe_hw *hw, u16 mask)
1084 u32 fwmask = mask << 5;
1088 if (ixgbe_get_eeprom_semaphore(hw))
1089 return -IXGBE_ERR_SWFW_SYNC;
1091 gssr = IXGBE_READ_REG(hw, IXGBE_GSSR);
1092 if (!(gssr & (fwmask | swmask)))
1096 * Firmware currently using resource (fwmask) or other software
1097 * thread currently using resource (swmask)
1099 ixgbe_release_eeprom_semaphore(hw);
1105 hw_dbg(hw, "Driver can't access resource, GSSR timeout.\n");
1106 return -IXGBE_ERR_SWFW_SYNC;
1110 IXGBE_WRITE_REG(hw, IXGBE_GSSR, gssr);
1112 ixgbe_release_eeprom_semaphore(hw);
1117 * ixgbe_release_swfw_sync - Release SWFW semaphore
1118 * @hw: pointer to hardware structure
1119 * @mask: Mask to specify wich semaphore to release
1121 * Releases the SWFW semaphore throught the GSSR register for the specified
1122 * function (CSR, PHY0, PHY1, EEPROM, Flash)
1124 void ixgbe_release_swfw_sync(struct ixgbe_hw *hw, u16 mask)
1129 ixgbe_get_eeprom_semaphore(hw);
1131 gssr = IXGBE_READ_REG(hw, IXGBE_GSSR);
1133 IXGBE_WRITE_REG(hw, IXGBE_GSSR, gssr);
1135 ixgbe_release_eeprom_semaphore(hw);
1139 * ixgbe_read_analog_reg8 - Reads 8 bit Atlas analog register
1140 * @hw: pointer to hardware structure
1141 * @reg: analog register to read
1144 * Performs write operation to analog register specified.
1146 s32 ixgbe_read_analog_reg8(struct ixgbe_hw *hw, u32 reg, u8 *val)
1150 IXGBE_WRITE_REG(hw, IXGBE_ATLASCTL,
1151 IXGBE_ATLASCTL_WRITE_CMD | (reg << 8));
1152 IXGBE_WRITE_FLUSH(hw);
1154 atlas_ctl = IXGBE_READ_REG(hw, IXGBE_ATLASCTL);
1155 *val = (u8)atlas_ctl;
1161 * ixgbe_write_analog_reg8 - Writes 8 bit Atlas analog register
1162 * @hw: pointer to hardware structure
1163 * @reg: atlas register to write
1164 * @val: value to write
1166 * Performs write operation to Atlas analog register specified.
1168 s32 ixgbe_write_analog_reg8(struct ixgbe_hw *hw, u32 reg, u8 val)
1172 atlas_ctl = (reg << 8) | val;
1173 IXGBE_WRITE_REG(hw, IXGBE_ATLASCTL, atlas_ctl);
1174 IXGBE_WRITE_FLUSH(hw);