1 /*******************************************************************************
3 Intel 10 Gigabit PCI Express Linux driver
4 Copyright(c) 1999 - 2010 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 e1000-devel Mailing List <e1000-devel@lists.sourceforge.net>
24 Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
26 *******************************************************************************/
28 #include <linux/pci.h>
29 #include <linux/delay.h>
30 #include <linux/sched.h>
31 #include <linux/netdevice.h>
34 #include "ixgbe_common.h"
35 #include "ixgbe_phy.h"
37 static s32 ixgbe_acquire_eeprom(struct ixgbe_hw *hw);
38 static s32 ixgbe_get_eeprom_semaphore(struct ixgbe_hw *hw);
39 static void ixgbe_release_eeprom_semaphore(struct ixgbe_hw *hw);
40 static s32 ixgbe_ready_eeprom(struct ixgbe_hw *hw);
41 static void ixgbe_standby_eeprom(struct ixgbe_hw *hw);
42 static void ixgbe_shift_out_eeprom_bits(struct ixgbe_hw *hw, u16 data,
44 static u16 ixgbe_shift_in_eeprom_bits(struct ixgbe_hw *hw, u16 count);
45 static void ixgbe_raise_eeprom_clk(struct ixgbe_hw *hw, u32 *eec);
46 static void ixgbe_lower_eeprom_clk(struct ixgbe_hw *hw, u32 *eec);
47 static void ixgbe_release_eeprom(struct ixgbe_hw *hw);
49 static void ixgbe_enable_rar(struct ixgbe_hw *hw, u32 index);
50 static void ixgbe_disable_rar(struct ixgbe_hw *hw, u32 index);
51 static s32 ixgbe_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr);
52 static void ixgbe_add_uc_addr(struct ixgbe_hw *hw, u8 *addr, u32 vmdq);
53 static s32 ixgbe_setup_fc(struct ixgbe_hw *hw, s32 packetbuf_num);
56 * ixgbe_start_hw_generic - Prepare hardware for Tx/Rx
57 * @hw: pointer to hardware structure
59 * Starts the hardware by filling the bus info structure and media type, clears
60 * all on chip counters, initializes receive address registers, multicast
61 * table, VLAN filter table, calls routine to set up link and flow control
62 * settings, and leaves transmit and receive units disabled and uninitialized
64 s32 ixgbe_start_hw_generic(struct ixgbe_hw *hw)
68 /* Set the media type */
69 hw->phy.media_type = hw->mac.ops.get_media_type(hw);
71 /* Identify the PHY */
72 hw->phy.ops.identify(hw);
74 /* Clear the VLAN filter table */
75 hw->mac.ops.clear_vfta(hw);
77 /* Clear statistics registers */
78 hw->mac.ops.clear_hw_cntrs(hw);
80 /* Set No Snoop Disable */
81 ctrl_ext = IXGBE_READ_REG(hw, IXGBE_CTRL_EXT);
82 ctrl_ext |= IXGBE_CTRL_EXT_NS_DIS;
83 IXGBE_WRITE_REG(hw, IXGBE_CTRL_EXT, ctrl_ext);
84 IXGBE_WRITE_FLUSH(hw);
86 /* Setup flow control */
87 ixgbe_setup_fc(hw, 0);
89 /* Clear adapter stopped flag */
90 hw->adapter_stopped = false;
96 * ixgbe_init_hw_generic - Generic hardware initialization
97 * @hw: pointer to hardware structure
99 * Initialize the hardware by resetting the hardware, filling the bus info
100 * structure and media type, clears all on chip counters, initializes receive
101 * address registers, multicast table, VLAN filter table, calls routine to set
102 * up link and flow control settings, and leaves transmit and receive units
103 * disabled and uninitialized
105 s32 ixgbe_init_hw_generic(struct ixgbe_hw *hw)
109 /* Reset the hardware */
110 status = hw->mac.ops.reset_hw(hw);
114 status = hw->mac.ops.start_hw(hw);
121 * ixgbe_clear_hw_cntrs_generic - Generic clear hardware counters
122 * @hw: pointer to hardware structure
124 * Clears all hardware statistics counters by reading them from the hardware
125 * Statistics counters are clear on read.
127 s32 ixgbe_clear_hw_cntrs_generic(struct ixgbe_hw *hw)
131 IXGBE_READ_REG(hw, IXGBE_CRCERRS);
132 IXGBE_READ_REG(hw, IXGBE_ILLERRC);
133 IXGBE_READ_REG(hw, IXGBE_ERRBC);
134 IXGBE_READ_REG(hw, IXGBE_MSPDC);
135 for (i = 0; i < 8; i++)
136 IXGBE_READ_REG(hw, IXGBE_MPC(i));
138 IXGBE_READ_REG(hw, IXGBE_MLFC);
139 IXGBE_READ_REG(hw, IXGBE_MRFC);
140 IXGBE_READ_REG(hw, IXGBE_RLEC);
141 IXGBE_READ_REG(hw, IXGBE_LXONTXC);
142 IXGBE_READ_REG(hw, IXGBE_LXONRXC);
143 IXGBE_READ_REG(hw, IXGBE_LXOFFTXC);
144 IXGBE_READ_REG(hw, IXGBE_LXOFFRXC);
146 for (i = 0; i < 8; i++) {
147 IXGBE_READ_REG(hw, IXGBE_PXONTXC(i));
148 IXGBE_READ_REG(hw, IXGBE_PXONRXC(i));
149 IXGBE_READ_REG(hw, IXGBE_PXOFFTXC(i));
150 IXGBE_READ_REG(hw, IXGBE_PXOFFRXC(i));
153 IXGBE_READ_REG(hw, IXGBE_PRC64);
154 IXGBE_READ_REG(hw, IXGBE_PRC127);
155 IXGBE_READ_REG(hw, IXGBE_PRC255);
156 IXGBE_READ_REG(hw, IXGBE_PRC511);
157 IXGBE_READ_REG(hw, IXGBE_PRC1023);
158 IXGBE_READ_REG(hw, IXGBE_PRC1522);
159 IXGBE_READ_REG(hw, IXGBE_GPRC);
160 IXGBE_READ_REG(hw, IXGBE_BPRC);
161 IXGBE_READ_REG(hw, IXGBE_MPRC);
162 IXGBE_READ_REG(hw, IXGBE_GPTC);
163 IXGBE_READ_REG(hw, IXGBE_GORCL);
164 IXGBE_READ_REG(hw, IXGBE_GORCH);
165 IXGBE_READ_REG(hw, IXGBE_GOTCL);
166 IXGBE_READ_REG(hw, IXGBE_GOTCH);
167 for (i = 0; i < 8; i++)
168 IXGBE_READ_REG(hw, IXGBE_RNBC(i));
169 IXGBE_READ_REG(hw, IXGBE_RUC);
170 IXGBE_READ_REG(hw, IXGBE_RFC);
171 IXGBE_READ_REG(hw, IXGBE_ROC);
172 IXGBE_READ_REG(hw, IXGBE_RJC);
173 IXGBE_READ_REG(hw, IXGBE_MNGPRC);
174 IXGBE_READ_REG(hw, IXGBE_MNGPDC);
175 IXGBE_READ_REG(hw, IXGBE_MNGPTC);
176 IXGBE_READ_REG(hw, IXGBE_TORL);
177 IXGBE_READ_REG(hw, IXGBE_TORH);
178 IXGBE_READ_REG(hw, IXGBE_TPR);
179 IXGBE_READ_REG(hw, IXGBE_TPT);
180 IXGBE_READ_REG(hw, IXGBE_PTC64);
181 IXGBE_READ_REG(hw, IXGBE_PTC127);
182 IXGBE_READ_REG(hw, IXGBE_PTC255);
183 IXGBE_READ_REG(hw, IXGBE_PTC511);
184 IXGBE_READ_REG(hw, IXGBE_PTC1023);
185 IXGBE_READ_REG(hw, IXGBE_PTC1522);
186 IXGBE_READ_REG(hw, IXGBE_MPTC);
187 IXGBE_READ_REG(hw, IXGBE_BPTC);
188 for (i = 0; i < 16; i++) {
189 IXGBE_READ_REG(hw, IXGBE_QPRC(i));
190 IXGBE_READ_REG(hw, IXGBE_QBRC(i));
191 IXGBE_READ_REG(hw, IXGBE_QPTC(i));
192 IXGBE_READ_REG(hw, IXGBE_QBTC(i));
199 * ixgbe_read_pba_num_generic - Reads part number from EEPROM
200 * @hw: pointer to hardware structure
201 * @pba_num: stores the part number from the EEPROM
203 * Reads the part number from the EEPROM.
205 s32 ixgbe_read_pba_num_generic(struct ixgbe_hw *hw, u32 *pba_num)
210 ret_val = hw->eeprom.ops.read(hw, IXGBE_PBANUM0_PTR, &data);
212 hw_dbg(hw, "NVM Read Error\n");
215 *pba_num = (u32)(data << 16);
217 ret_val = hw->eeprom.ops.read(hw, IXGBE_PBANUM1_PTR, &data);
219 hw_dbg(hw, "NVM Read Error\n");
228 * ixgbe_get_mac_addr_generic - Generic get MAC address
229 * @hw: pointer to hardware structure
230 * @mac_addr: Adapter MAC address
232 * Reads the adapter's MAC address from first Receive Address Register (RAR0)
233 * A reset of the adapter must be performed prior to calling this function
234 * in order for the MAC address to have been loaded from the EEPROM into RAR0
236 s32 ixgbe_get_mac_addr_generic(struct ixgbe_hw *hw, u8 *mac_addr)
242 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(0));
243 rar_low = IXGBE_READ_REG(hw, IXGBE_RAL(0));
245 for (i = 0; i < 4; i++)
246 mac_addr[i] = (u8)(rar_low >> (i*8));
248 for (i = 0; i < 2; i++)
249 mac_addr[i+4] = (u8)(rar_high >> (i*8));
255 * ixgbe_get_bus_info_generic - Generic set PCI bus info
256 * @hw: pointer to hardware structure
258 * Sets the PCI bus info (speed, width, type) within the ixgbe_hw structure
260 s32 ixgbe_get_bus_info_generic(struct ixgbe_hw *hw)
262 struct ixgbe_adapter *adapter = hw->back;
263 struct ixgbe_mac_info *mac = &hw->mac;
266 hw->bus.type = ixgbe_bus_type_pci_express;
268 /* Get the negotiated link width and speed from PCI config space */
269 pci_read_config_word(adapter->pdev, IXGBE_PCI_LINK_STATUS,
272 switch (link_status & IXGBE_PCI_LINK_WIDTH) {
273 case IXGBE_PCI_LINK_WIDTH_1:
274 hw->bus.width = ixgbe_bus_width_pcie_x1;
276 case IXGBE_PCI_LINK_WIDTH_2:
277 hw->bus.width = ixgbe_bus_width_pcie_x2;
279 case IXGBE_PCI_LINK_WIDTH_4:
280 hw->bus.width = ixgbe_bus_width_pcie_x4;
282 case IXGBE_PCI_LINK_WIDTH_8:
283 hw->bus.width = ixgbe_bus_width_pcie_x8;
286 hw->bus.width = ixgbe_bus_width_unknown;
290 switch (link_status & IXGBE_PCI_LINK_SPEED) {
291 case IXGBE_PCI_LINK_SPEED_2500:
292 hw->bus.speed = ixgbe_bus_speed_2500;
294 case IXGBE_PCI_LINK_SPEED_5000:
295 hw->bus.speed = ixgbe_bus_speed_5000;
298 hw->bus.speed = ixgbe_bus_speed_unknown;
302 mac->ops.set_lan_id(hw);
308 * ixgbe_set_lan_id_multi_port_pcie - Set LAN id for PCIe multiple port devices
309 * @hw: pointer to the HW structure
311 * Determines the LAN function id by reading memory-mapped registers
312 * and swaps the port value if requested.
314 void ixgbe_set_lan_id_multi_port_pcie(struct ixgbe_hw *hw)
316 struct ixgbe_bus_info *bus = &hw->bus;
319 reg = IXGBE_READ_REG(hw, IXGBE_STATUS);
320 bus->func = (reg & IXGBE_STATUS_LAN_ID) >> IXGBE_STATUS_LAN_ID_SHIFT;
321 bus->lan_id = bus->func;
323 /* check for a port swap */
324 reg = IXGBE_READ_REG(hw, IXGBE_FACTPS);
325 if (reg & IXGBE_FACTPS_LFS)
330 * ixgbe_stop_adapter_generic - Generic stop Tx/Rx units
331 * @hw: pointer to hardware structure
333 * Sets the adapter_stopped flag within ixgbe_hw struct. Clears interrupts,
334 * disables transmit and receive units. The adapter_stopped flag is used by
335 * the shared code and drivers to determine if the adapter is in a stopped
336 * state and should not touch the hardware.
338 s32 ixgbe_stop_adapter_generic(struct ixgbe_hw *hw)
340 u32 number_of_queues;
345 * Set the adapter_stopped flag so other driver functions stop touching
348 hw->adapter_stopped = true;
350 /* Disable the receive unit */
351 reg_val = IXGBE_READ_REG(hw, IXGBE_RXCTRL);
352 reg_val &= ~(IXGBE_RXCTRL_RXEN);
353 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, reg_val);
354 IXGBE_WRITE_FLUSH(hw);
357 /* Clear interrupt mask to stop from interrupts being generated */
358 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_IRQ_CLEAR_MASK);
360 /* Clear any pending interrupts */
361 IXGBE_READ_REG(hw, IXGBE_EICR);
363 /* Disable the transmit unit. Each queue must be disabled. */
364 number_of_queues = hw->mac.max_tx_queues;
365 for (i = 0; i < number_of_queues; i++) {
366 reg_val = IXGBE_READ_REG(hw, IXGBE_TXDCTL(i));
367 if (reg_val & IXGBE_TXDCTL_ENABLE) {
368 reg_val &= ~IXGBE_TXDCTL_ENABLE;
369 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(i), reg_val);
374 * Prevent the PCI-E bus from from hanging by disabling PCI-E master
375 * access and verify no pending requests
377 if (ixgbe_disable_pcie_master(hw) != 0)
378 hw_dbg(hw, "PCI-E Master disable polling has failed.\n");
384 * ixgbe_led_on_generic - Turns on the software controllable LEDs.
385 * @hw: pointer to hardware structure
386 * @index: led number to turn on
388 s32 ixgbe_led_on_generic(struct ixgbe_hw *hw, u32 index)
390 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
392 /* To turn on the LED, set mode to ON. */
393 led_reg &= ~IXGBE_LED_MODE_MASK(index);
394 led_reg |= IXGBE_LED_ON << IXGBE_LED_MODE_SHIFT(index);
395 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
396 IXGBE_WRITE_FLUSH(hw);
402 * ixgbe_led_off_generic - Turns off the software controllable LEDs.
403 * @hw: pointer to hardware structure
404 * @index: led number to turn off
406 s32 ixgbe_led_off_generic(struct ixgbe_hw *hw, u32 index)
408 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
410 /* To turn off the LED, set mode to OFF. */
411 led_reg &= ~IXGBE_LED_MODE_MASK(index);
412 led_reg |= IXGBE_LED_OFF << IXGBE_LED_MODE_SHIFT(index);
413 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
414 IXGBE_WRITE_FLUSH(hw);
420 * ixgbe_init_eeprom_params_generic - Initialize EEPROM params
421 * @hw: pointer to hardware structure
423 * Initializes the EEPROM parameters ixgbe_eeprom_info within the
424 * ixgbe_hw struct in order to set up EEPROM access.
426 s32 ixgbe_init_eeprom_params_generic(struct ixgbe_hw *hw)
428 struct ixgbe_eeprom_info *eeprom = &hw->eeprom;
432 if (eeprom->type == ixgbe_eeprom_uninitialized) {
433 eeprom->type = ixgbe_eeprom_none;
434 /* Set default semaphore delay to 10ms which is a well
436 eeprom->semaphore_delay = 10;
439 * Check for EEPROM present first.
440 * If not present leave as none
442 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
443 if (eec & IXGBE_EEC_PRES) {
444 eeprom->type = ixgbe_eeprom_spi;
447 * SPI EEPROM is assumed here. This code would need to
448 * change if a future EEPROM is not SPI.
450 eeprom_size = (u16)((eec & IXGBE_EEC_SIZE) >>
451 IXGBE_EEC_SIZE_SHIFT);
452 eeprom->word_size = 1 << (eeprom_size +
453 IXGBE_EEPROM_WORD_SIZE_SHIFT);
456 if (eec & IXGBE_EEC_ADDR_SIZE)
457 eeprom->address_bits = 16;
459 eeprom->address_bits = 8;
460 hw_dbg(hw, "Eeprom params: type = %d, size = %d, address bits: "
461 "%d\n", eeprom->type, eeprom->word_size,
462 eeprom->address_bits);
469 * ixgbe_write_eeprom_generic - Writes 16 bit value to EEPROM
470 * @hw: pointer to hardware structure
471 * @offset: offset within the EEPROM to be written to
472 * @data: 16 bit word to be written to the EEPROM
474 * If ixgbe_eeprom_update_checksum is not called after this function, the
475 * EEPROM will most likely contain an invalid checksum.
477 s32 ixgbe_write_eeprom_generic(struct ixgbe_hw *hw, u16 offset, u16 data)
480 u8 write_opcode = IXGBE_EEPROM_WRITE_OPCODE_SPI;
482 hw->eeprom.ops.init_params(hw);
484 if (offset >= hw->eeprom.word_size) {
485 status = IXGBE_ERR_EEPROM;
489 /* Prepare the EEPROM for writing */
490 status = ixgbe_acquire_eeprom(hw);
493 if (ixgbe_ready_eeprom(hw) != 0) {
494 ixgbe_release_eeprom(hw);
495 status = IXGBE_ERR_EEPROM;
500 ixgbe_standby_eeprom(hw);
502 /* Send the WRITE ENABLE command (8 bit opcode ) */
503 ixgbe_shift_out_eeprom_bits(hw, IXGBE_EEPROM_WREN_OPCODE_SPI,
504 IXGBE_EEPROM_OPCODE_BITS);
506 ixgbe_standby_eeprom(hw);
509 * Some SPI eeproms use the 8th address bit embedded in the
512 if ((hw->eeprom.address_bits == 8) && (offset >= 128))
513 write_opcode |= IXGBE_EEPROM_A8_OPCODE_SPI;
515 /* Send the Write command (8-bit opcode + addr) */
516 ixgbe_shift_out_eeprom_bits(hw, write_opcode,
517 IXGBE_EEPROM_OPCODE_BITS);
518 ixgbe_shift_out_eeprom_bits(hw, (u16)(offset*2),
519 hw->eeprom.address_bits);
522 data = (data >> 8) | (data << 8);
523 ixgbe_shift_out_eeprom_bits(hw, data, 16);
524 ixgbe_standby_eeprom(hw);
526 msleep(hw->eeprom.semaphore_delay);
527 /* Done with writing - release the EEPROM */
528 ixgbe_release_eeprom(hw);
536 * ixgbe_read_eeprom_bit_bang_generic - Read EEPROM word using bit-bang
537 * @hw: pointer to hardware structure
538 * @offset: offset within the EEPROM to be read
539 * @data: read 16 bit value from EEPROM
541 * Reads 16 bit value from EEPROM through bit-bang method
543 s32 ixgbe_read_eeprom_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
548 u8 read_opcode = IXGBE_EEPROM_READ_OPCODE_SPI;
550 hw->eeprom.ops.init_params(hw);
552 if (offset >= hw->eeprom.word_size) {
553 status = IXGBE_ERR_EEPROM;
557 /* Prepare the EEPROM for reading */
558 status = ixgbe_acquire_eeprom(hw);
561 if (ixgbe_ready_eeprom(hw) != 0) {
562 ixgbe_release_eeprom(hw);
563 status = IXGBE_ERR_EEPROM;
568 ixgbe_standby_eeprom(hw);
571 * Some SPI eeproms use the 8th address bit embedded in the
574 if ((hw->eeprom.address_bits == 8) && (offset >= 128))
575 read_opcode |= IXGBE_EEPROM_A8_OPCODE_SPI;
577 /* Send the READ command (opcode + addr) */
578 ixgbe_shift_out_eeprom_bits(hw, read_opcode,
579 IXGBE_EEPROM_OPCODE_BITS);
580 ixgbe_shift_out_eeprom_bits(hw, (u16)(offset*2),
581 hw->eeprom.address_bits);
584 word_in = ixgbe_shift_in_eeprom_bits(hw, 16);
585 *data = (word_in >> 8) | (word_in << 8);
587 /* End this read operation */
588 ixgbe_release_eeprom(hw);
596 * ixgbe_read_eerd_generic - Read EEPROM word using EERD
597 * @hw: pointer to hardware structure
598 * @offset: offset of word in the EEPROM to read
599 * @data: word read from the EEPROM
601 * Reads a 16 bit word from the EEPROM using the EERD register.
603 s32 ixgbe_read_eerd_generic(struct ixgbe_hw *hw, u16 offset, u16 *data)
608 hw->eeprom.ops.init_params(hw);
610 if (offset >= hw->eeprom.word_size) {
611 status = IXGBE_ERR_EEPROM;
615 eerd = (offset << IXGBE_EEPROM_RW_ADDR_SHIFT) +
616 IXGBE_EEPROM_RW_REG_START;
618 IXGBE_WRITE_REG(hw, IXGBE_EERD, eerd);
619 status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_READ);
622 *data = (IXGBE_READ_REG(hw, IXGBE_EERD) >>
623 IXGBE_EEPROM_RW_REG_DATA);
625 hw_dbg(hw, "Eeprom read timed out\n");
632 * ixgbe_poll_eerd_eewr_done - Poll EERD read or EEWR write status
633 * @hw: pointer to hardware structure
634 * @ee_reg: EEPROM flag for polling
636 * Polls the status bit (bit 1) of the EERD or EEWR to determine when the
637 * read or write is done respectively.
639 s32 ixgbe_poll_eerd_eewr_done(struct ixgbe_hw *hw, u32 ee_reg)
643 s32 status = IXGBE_ERR_EEPROM;
645 for (i = 0; i < IXGBE_EERD_EEWR_ATTEMPTS; i++) {
646 if (ee_reg == IXGBE_NVM_POLL_READ)
647 reg = IXGBE_READ_REG(hw, IXGBE_EERD);
649 reg = IXGBE_READ_REG(hw, IXGBE_EEWR);
651 if (reg & IXGBE_EEPROM_RW_REG_DONE) {
661 * ixgbe_acquire_eeprom - Acquire EEPROM using bit-bang
662 * @hw: pointer to hardware structure
664 * Prepares EEPROM for access using bit-bang method. This function should
665 * be called before issuing a command to the EEPROM.
667 static s32 ixgbe_acquire_eeprom(struct ixgbe_hw *hw)
673 if (ixgbe_acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM) != 0)
674 status = IXGBE_ERR_SWFW_SYNC;
677 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
679 /* Request EEPROM Access */
680 eec |= IXGBE_EEC_REQ;
681 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
683 for (i = 0; i < IXGBE_EEPROM_GRANT_ATTEMPTS; i++) {
684 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
685 if (eec & IXGBE_EEC_GNT)
690 /* Release if grant not acquired */
691 if (!(eec & IXGBE_EEC_GNT)) {
692 eec &= ~IXGBE_EEC_REQ;
693 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
694 hw_dbg(hw, "Could not acquire EEPROM grant\n");
696 ixgbe_release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
697 status = IXGBE_ERR_EEPROM;
701 /* Setup EEPROM for Read/Write */
703 /* Clear CS and SK */
704 eec &= ~(IXGBE_EEC_CS | IXGBE_EEC_SK);
705 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
706 IXGBE_WRITE_FLUSH(hw);
713 * ixgbe_get_eeprom_semaphore - Get hardware semaphore
714 * @hw: pointer to hardware structure
716 * Sets the hardware semaphores so EEPROM access can occur for bit-bang method
718 static s32 ixgbe_get_eeprom_semaphore(struct ixgbe_hw *hw)
720 s32 status = IXGBE_ERR_EEPROM;
725 /* Set timeout value based on size of EEPROM */
726 timeout = hw->eeprom.word_size + 1;
728 /* Get SMBI software semaphore between device drivers first */
729 for (i = 0; i < timeout; i++) {
731 * If the SMBI bit is 0 when we read it, then the bit will be
732 * set and we have the semaphore
734 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
735 if (!(swsm & IXGBE_SWSM_SMBI)) {
742 /* Now get the semaphore between SW/FW through the SWESMBI bit */
744 for (i = 0; i < timeout; i++) {
745 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
747 /* Set the SW EEPROM semaphore bit to request access */
748 swsm |= IXGBE_SWSM_SWESMBI;
749 IXGBE_WRITE_REG(hw, IXGBE_SWSM, swsm);
752 * If we set the bit successfully then we got the
755 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
756 if (swsm & IXGBE_SWSM_SWESMBI)
763 * Release semaphores and return error if SW EEPROM semaphore
764 * was not granted because we don't have access to the EEPROM
767 hw_dbg(hw, "Driver can't access the Eeprom - Semaphore "
769 ixgbe_release_eeprom_semaphore(hw);
770 status = IXGBE_ERR_EEPROM;
778 * ixgbe_release_eeprom_semaphore - Release hardware semaphore
779 * @hw: pointer to hardware structure
781 * This function clears hardware semaphore bits.
783 static void ixgbe_release_eeprom_semaphore(struct ixgbe_hw *hw)
787 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
789 /* Release both semaphores by writing 0 to the bits SWESMBI and SMBI */
790 swsm &= ~(IXGBE_SWSM_SWESMBI | IXGBE_SWSM_SMBI);
791 IXGBE_WRITE_REG(hw, IXGBE_SWSM, swsm);
792 IXGBE_WRITE_FLUSH(hw);
796 * ixgbe_ready_eeprom - Polls for EEPROM ready
797 * @hw: pointer to hardware structure
799 static s32 ixgbe_ready_eeprom(struct ixgbe_hw *hw)
806 * Read "Status Register" repeatedly until the LSB is cleared. The
807 * EEPROM will signal that the command has been completed by clearing
808 * bit 0 of the internal status register. If it's not cleared within
809 * 5 milliseconds, then error out.
811 for (i = 0; i < IXGBE_EEPROM_MAX_RETRY_SPI; i += 5) {
812 ixgbe_shift_out_eeprom_bits(hw, IXGBE_EEPROM_RDSR_OPCODE_SPI,
813 IXGBE_EEPROM_OPCODE_BITS);
814 spi_stat_reg = (u8)ixgbe_shift_in_eeprom_bits(hw, 8);
815 if (!(spi_stat_reg & IXGBE_EEPROM_STATUS_RDY_SPI))
819 ixgbe_standby_eeprom(hw);
823 * On some parts, SPI write time could vary from 0-20mSec on 3.3V
824 * devices (and only 0-5mSec on 5V devices)
826 if (i >= IXGBE_EEPROM_MAX_RETRY_SPI) {
827 hw_dbg(hw, "SPI EEPROM Status error\n");
828 status = IXGBE_ERR_EEPROM;
835 * ixgbe_standby_eeprom - Returns EEPROM to a "standby" state
836 * @hw: pointer to hardware structure
838 static void ixgbe_standby_eeprom(struct ixgbe_hw *hw)
842 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
844 /* Toggle CS to flush commands */
846 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
847 IXGBE_WRITE_FLUSH(hw);
849 eec &= ~IXGBE_EEC_CS;
850 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
851 IXGBE_WRITE_FLUSH(hw);
856 * ixgbe_shift_out_eeprom_bits - Shift data bits out to the EEPROM.
857 * @hw: pointer to hardware structure
858 * @data: data to send to the EEPROM
859 * @count: number of bits to shift out
861 static void ixgbe_shift_out_eeprom_bits(struct ixgbe_hw *hw, u16 data,
868 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
871 * Mask is used to shift "count" bits of "data" out to the EEPROM
872 * one bit at a time. Determine the starting bit based on count
874 mask = 0x01 << (count - 1);
876 for (i = 0; i < count; i++) {
878 * A "1" is shifted out to the EEPROM by setting bit "DI" to a
879 * "1", and then raising and then lowering the clock (the SK
880 * bit controls the clock input to the EEPROM). A "0" is
881 * shifted out to the EEPROM by setting "DI" to "0" and then
882 * raising and then lowering the clock.
887 eec &= ~IXGBE_EEC_DI;
889 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
890 IXGBE_WRITE_FLUSH(hw);
894 ixgbe_raise_eeprom_clk(hw, &eec);
895 ixgbe_lower_eeprom_clk(hw, &eec);
898 * Shift mask to signify next bit of data to shift in to the
904 /* We leave the "DI" bit set to "0" when we leave this routine. */
905 eec &= ~IXGBE_EEC_DI;
906 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
907 IXGBE_WRITE_FLUSH(hw);
911 * ixgbe_shift_in_eeprom_bits - Shift data bits in from the EEPROM
912 * @hw: pointer to hardware structure
914 static u16 ixgbe_shift_in_eeprom_bits(struct ixgbe_hw *hw, u16 count)
921 * In order to read a register from the EEPROM, we need to shift
922 * 'count' bits in from the EEPROM. Bits are "shifted in" by raising
923 * the clock input to the EEPROM (setting the SK bit), and then reading
924 * the value of the "DO" bit. During this "shifting in" process the
925 * "DI" bit should always be clear.
927 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
929 eec &= ~(IXGBE_EEC_DO | IXGBE_EEC_DI);
931 for (i = 0; i < count; i++) {
933 ixgbe_raise_eeprom_clk(hw, &eec);
935 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
937 eec &= ~(IXGBE_EEC_DI);
938 if (eec & IXGBE_EEC_DO)
941 ixgbe_lower_eeprom_clk(hw, &eec);
948 * ixgbe_raise_eeprom_clk - Raises the EEPROM's clock input.
949 * @hw: pointer to hardware structure
950 * @eec: EEC register's current value
952 static void ixgbe_raise_eeprom_clk(struct ixgbe_hw *hw, u32 *eec)
955 * Raise the clock input to the EEPROM
956 * (setting the SK bit), then delay
958 *eec = *eec | IXGBE_EEC_SK;
959 IXGBE_WRITE_REG(hw, IXGBE_EEC, *eec);
960 IXGBE_WRITE_FLUSH(hw);
965 * ixgbe_lower_eeprom_clk - Lowers the EEPROM's clock input.
966 * @hw: pointer to hardware structure
967 * @eecd: EECD's current value
969 static void ixgbe_lower_eeprom_clk(struct ixgbe_hw *hw, u32 *eec)
972 * Lower the clock input to the EEPROM (clearing the SK bit), then
975 *eec = *eec & ~IXGBE_EEC_SK;
976 IXGBE_WRITE_REG(hw, IXGBE_EEC, *eec);
977 IXGBE_WRITE_FLUSH(hw);
982 * ixgbe_release_eeprom - Release EEPROM, release semaphores
983 * @hw: pointer to hardware structure
985 static void ixgbe_release_eeprom(struct ixgbe_hw *hw)
989 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
991 eec |= IXGBE_EEC_CS; /* Pull CS high */
992 eec &= ~IXGBE_EEC_SK; /* Lower SCK */
994 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
995 IXGBE_WRITE_FLUSH(hw);
999 /* Stop requesting EEPROM access */
1000 eec &= ~IXGBE_EEC_REQ;
1001 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1003 ixgbe_release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
1007 * ixgbe_calc_eeprom_checksum - Calculates and returns the checksum
1008 * @hw: pointer to hardware structure
1010 u16 ixgbe_calc_eeprom_checksum_generic(struct ixgbe_hw *hw)
1019 /* Include 0x0-0x3F in the checksum */
1020 for (i = 0; i < IXGBE_EEPROM_CHECKSUM; i++) {
1021 if (hw->eeprom.ops.read(hw, i, &word) != 0) {
1022 hw_dbg(hw, "EEPROM read failed\n");
1028 /* Include all data from pointers except for the fw pointer */
1029 for (i = IXGBE_PCIE_ANALOG_PTR; i < IXGBE_FW_PTR; i++) {
1030 hw->eeprom.ops.read(hw, i, &pointer);
1032 /* Make sure the pointer seems valid */
1033 if (pointer != 0xFFFF && pointer != 0) {
1034 hw->eeprom.ops.read(hw, pointer, &length);
1036 if (length != 0xFFFF && length != 0) {
1037 for (j = pointer+1; j <= pointer+length; j++) {
1038 hw->eeprom.ops.read(hw, j, &word);
1045 checksum = (u16)IXGBE_EEPROM_SUM - checksum;
1051 * ixgbe_validate_eeprom_checksum_generic - Validate EEPROM checksum
1052 * @hw: pointer to hardware structure
1053 * @checksum_val: calculated checksum
1055 * Performs checksum calculation and validates the EEPROM checksum. If the
1056 * caller does not need checksum_val, the value can be NULL.
1058 s32 ixgbe_validate_eeprom_checksum_generic(struct ixgbe_hw *hw,
1063 u16 read_checksum = 0;
1066 * Read the first word from the EEPROM. If this times out or fails, do
1067 * not continue or we could be in for a very long wait while every
1070 status = hw->eeprom.ops.read(hw, 0, &checksum);
1073 checksum = hw->eeprom.ops.calc_checksum(hw);
1075 hw->eeprom.ops.read(hw, IXGBE_EEPROM_CHECKSUM, &read_checksum);
1078 * Verify read checksum from EEPROM is the same as
1079 * calculated checksum
1081 if (read_checksum != checksum)
1082 status = IXGBE_ERR_EEPROM_CHECKSUM;
1084 /* If the user cares, return the calculated checksum */
1086 *checksum_val = checksum;
1088 hw_dbg(hw, "EEPROM read failed\n");
1095 * ixgbe_update_eeprom_checksum_generic - Updates the EEPROM checksum
1096 * @hw: pointer to hardware structure
1098 s32 ixgbe_update_eeprom_checksum_generic(struct ixgbe_hw *hw)
1104 * Read the first word from the EEPROM. If this times out or fails, do
1105 * not continue or we could be in for a very long wait while every
1108 status = hw->eeprom.ops.read(hw, 0, &checksum);
1111 checksum = hw->eeprom.ops.calc_checksum(hw);
1112 status = hw->eeprom.ops.write(hw, IXGBE_EEPROM_CHECKSUM,
1115 hw_dbg(hw, "EEPROM read failed\n");
1122 * ixgbe_validate_mac_addr - Validate MAC address
1123 * @mac_addr: pointer to MAC address.
1125 * Tests a MAC address to ensure it is a valid Individual Address
1127 s32 ixgbe_validate_mac_addr(u8 *mac_addr)
1131 /* Make sure it is not a multicast address */
1132 if (IXGBE_IS_MULTICAST(mac_addr))
1133 status = IXGBE_ERR_INVALID_MAC_ADDR;
1134 /* Not a broadcast address */
1135 else if (IXGBE_IS_BROADCAST(mac_addr))
1136 status = IXGBE_ERR_INVALID_MAC_ADDR;
1137 /* Reject the zero address */
1138 else if (mac_addr[0] == 0 && mac_addr[1] == 0 && mac_addr[2] == 0 &&
1139 mac_addr[3] == 0 && mac_addr[4] == 0 && mac_addr[5] == 0)
1140 status = IXGBE_ERR_INVALID_MAC_ADDR;
1146 * ixgbe_set_rar_generic - Set Rx address register
1147 * @hw: pointer to hardware structure
1148 * @index: Receive address register to write
1149 * @addr: Address to put into receive address register
1150 * @vmdq: VMDq "set" or "pool" index
1151 * @enable_addr: set flag that address is active
1153 * Puts an ethernet address into a receive address register.
1155 s32 ixgbe_set_rar_generic(struct ixgbe_hw *hw, u32 index, u8 *addr, u32 vmdq,
1158 u32 rar_low, rar_high;
1159 u32 rar_entries = hw->mac.num_rar_entries;
1161 /* setup VMDq pool selection before this RAR gets enabled */
1162 hw->mac.ops.set_vmdq(hw, index, vmdq);
1164 /* Make sure we are using a valid rar index range */
1165 if (index < rar_entries) {
1167 * HW expects these in little endian so we reverse the byte
1168 * order from network order (big endian) to little endian
1170 rar_low = ((u32)addr[0] |
1171 ((u32)addr[1] << 8) |
1172 ((u32)addr[2] << 16) |
1173 ((u32)addr[3] << 24));
1175 * Some parts put the VMDq setting in the extra RAH bits,
1176 * so save everything except the lower 16 bits that hold part
1177 * of the address and the address valid bit.
1179 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(index));
1180 rar_high &= ~(0x0000FFFF | IXGBE_RAH_AV);
1181 rar_high |= ((u32)addr[4] | ((u32)addr[5] << 8));
1183 if (enable_addr != 0)
1184 rar_high |= IXGBE_RAH_AV;
1186 IXGBE_WRITE_REG(hw, IXGBE_RAL(index), rar_low);
1187 IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high);
1189 hw_dbg(hw, "RAR index %d is out of range.\n", index);
1190 return IXGBE_ERR_RAR_INDEX;
1197 * ixgbe_clear_rar_generic - Remove Rx address register
1198 * @hw: pointer to hardware structure
1199 * @index: Receive address register to write
1201 * Clears an ethernet address from a receive address register.
1203 s32 ixgbe_clear_rar_generic(struct ixgbe_hw *hw, u32 index)
1206 u32 rar_entries = hw->mac.num_rar_entries;
1208 /* Make sure we are using a valid rar index range */
1209 if (index < rar_entries) {
1211 * Some parts put the VMDq setting in the extra RAH bits,
1212 * so save everything except the lower 16 bits that hold part
1213 * of the address and the address valid bit.
1215 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(index));
1216 rar_high &= ~(0x0000FFFF | IXGBE_RAH_AV);
1218 IXGBE_WRITE_REG(hw, IXGBE_RAL(index), 0);
1219 IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high);
1221 hw_dbg(hw, "RAR index %d is out of range.\n", index);
1222 return IXGBE_ERR_RAR_INDEX;
1225 /* clear VMDq pool/queue selection for this RAR */
1226 hw->mac.ops.clear_vmdq(hw, index, IXGBE_CLEAR_VMDQ_ALL);
1232 * ixgbe_enable_rar - Enable Rx address register
1233 * @hw: pointer to hardware structure
1234 * @index: index into the RAR table
1236 * Enables the select receive address register.
1238 static void ixgbe_enable_rar(struct ixgbe_hw *hw, u32 index)
1242 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(index));
1243 rar_high |= IXGBE_RAH_AV;
1244 IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high);
1248 * ixgbe_disable_rar - Disable Rx address register
1249 * @hw: pointer to hardware structure
1250 * @index: index into the RAR table
1252 * Disables the select receive address register.
1254 static void ixgbe_disable_rar(struct ixgbe_hw *hw, u32 index)
1258 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(index));
1259 rar_high &= (~IXGBE_RAH_AV);
1260 IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high);
1264 * ixgbe_init_rx_addrs_generic - Initializes receive address filters.
1265 * @hw: pointer to hardware structure
1267 * Places the MAC address in receive address register 0 and clears the rest
1268 * of the receive address registers. Clears the multicast table. Assumes
1269 * the receiver is in reset when the routine is called.
1271 s32 ixgbe_init_rx_addrs_generic(struct ixgbe_hw *hw)
1274 u32 rar_entries = hw->mac.num_rar_entries;
1277 * If the current mac address is valid, assume it is a software override
1278 * to the permanent address.
1279 * Otherwise, use the permanent address from the eeprom.
1281 if (ixgbe_validate_mac_addr(hw->mac.addr) ==
1282 IXGBE_ERR_INVALID_MAC_ADDR) {
1283 /* Get the MAC address from the RAR0 for later reference */
1284 hw->mac.ops.get_mac_addr(hw, hw->mac.addr);
1286 hw_dbg(hw, " Keeping Current RAR0 Addr =%pM\n", hw->mac.addr);
1288 /* Setup the receive address. */
1289 hw_dbg(hw, "Overriding MAC Address in RAR[0]\n");
1290 hw_dbg(hw, " New MAC Addr =%pM\n", hw->mac.addr);
1292 hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0, IXGBE_RAH_AV);
1294 hw->addr_ctrl.overflow_promisc = 0;
1296 hw->addr_ctrl.rar_used_count = 1;
1298 /* Zero out the other receive addresses. */
1299 hw_dbg(hw, "Clearing RAR[1-%d]\n", rar_entries - 1);
1300 for (i = 1; i < rar_entries; i++) {
1301 IXGBE_WRITE_REG(hw, IXGBE_RAL(i), 0);
1302 IXGBE_WRITE_REG(hw, IXGBE_RAH(i), 0);
1306 hw->addr_ctrl.mc_addr_in_rar_count = 0;
1307 hw->addr_ctrl.mta_in_use = 0;
1308 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, hw->mac.mc_filter_type);
1310 hw_dbg(hw, " Clearing MTA\n");
1311 for (i = 0; i < hw->mac.mcft_size; i++)
1312 IXGBE_WRITE_REG(hw, IXGBE_MTA(i), 0);
1314 if (hw->mac.ops.init_uta_tables)
1315 hw->mac.ops.init_uta_tables(hw);
1321 * ixgbe_add_uc_addr - Adds a secondary unicast address.
1322 * @hw: pointer to hardware structure
1323 * @addr: new address
1325 * Adds it to unused receive address register or goes into promiscuous mode.
1327 static void ixgbe_add_uc_addr(struct ixgbe_hw *hw, u8 *addr, u32 vmdq)
1329 u32 rar_entries = hw->mac.num_rar_entries;
1332 hw_dbg(hw, " UC Addr = %.2X %.2X %.2X %.2X %.2X %.2X\n",
1333 addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
1336 * Place this address in the RAR if there is room,
1337 * else put the controller into promiscuous mode
1339 if (hw->addr_ctrl.rar_used_count < rar_entries) {
1340 rar = hw->addr_ctrl.rar_used_count -
1341 hw->addr_ctrl.mc_addr_in_rar_count;
1342 hw->mac.ops.set_rar(hw, rar, addr, vmdq, IXGBE_RAH_AV);
1343 hw_dbg(hw, "Added a secondary address to RAR[%d]\n", rar);
1344 hw->addr_ctrl.rar_used_count++;
1346 hw->addr_ctrl.overflow_promisc++;
1349 hw_dbg(hw, "ixgbe_add_uc_addr Complete\n");
1353 * ixgbe_update_uc_addr_list_generic - Updates MAC list of secondary addresses
1354 * @hw: pointer to hardware structure
1355 * @netdev: pointer to net device structure
1357 * The given list replaces any existing list. Clears the secondary addrs from
1358 * receive address registers. Uses unused receive address registers for the
1359 * first secondary addresses, and falls back to promiscuous mode as needed.
1361 * Drivers using secondary unicast addresses must set user_set_promisc when
1362 * manually putting the device into promiscuous mode.
1364 s32 ixgbe_update_uc_addr_list_generic(struct ixgbe_hw *hw,
1365 struct net_device *netdev)
1368 u32 old_promisc_setting = hw->addr_ctrl.overflow_promisc;
1371 struct netdev_hw_addr *ha;
1374 * Clear accounting of old secondary address list,
1375 * don't count RAR[0]
1377 uc_addr_in_use = hw->addr_ctrl.rar_used_count - 1;
1378 hw->addr_ctrl.rar_used_count -= uc_addr_in_use;
1379 hw->addr_ctrl.overflow_promisc = 0;
1381 /* Zero out the other receive addresses */
1382 hw_dbg(hw, "Clearing RAR[1-%d]\n", uc_addr_in_use + 1);
1383 for (i = 0; i < uc_addr_in_use; i++) {
1384 IXGBE_WRITE_REG(hw, IXGBE_RAL(1+i), 0);
1385 IXGBE_WRITE_REG(hw, IXGBE_RAH(1+i), 0);
1388 /* Add the new addresses */
1389 netdev_for_each_uc_addr(ha, netdev) {
1390 hw_dbg(hw, " Adding the secondary addresses:\n");
1391 ixgbe_add_uc_addr(hw, ha->addr, 0);
1394 if (hw->addr_ctrl.overflow_promisc) {
1395 /* enable promisc if not already in overflow or set by user */
1396 if (!old_promisc_setting && !hw->addr_ctrl.user_set_promisc) {
1397 hw_dbg(hw, " Entering address overflow promisc mode\n");
1398 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
1399 fctrl |= IXGBE_FCTRL_UPE;
1400 IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl);
1401 hw->addr_ctrl.uc_set_promisc = true;
1404 /* only disable if set by overflow, not by user */
1405 if ((old_promisc_setting && hw->addr_ctrl.uc_set_promisc) &&
1406 !(hw->addr_ctrl.user_set_promisc)) {
1407 hw_dbg(hw, " Leaving address overflow promisc mode\n");
1408 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
1409 fctrl &= ~IXGBE_FCTRL_UPE;
1410 IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl);
1411 hw->addr_ctrl.uc_set_promisc = false;
1415 hw_dbg(hw, "ixgbe_update_uc_addr_list_generic Complete\n");
1420 * ixgbe_mta_vector - Determines bit-vector in multicast table to set
1421 * @hw: pointer to hardware structure
1422 * @mc_addr: the multicast address
1424 * Extracts the 12 bits, from a multicast address, to determine which
1425 * bit-vector to set in the multicast table. The hardware uses 12 bits, from
1426 * incoming rx multicast addresses, to determine the bit-vector to check in
1427 * the MTA. Which of the 4 combination, of 12-bits, the hardware uses is set
1428 * by the MO field of the MCSTCTRL. The MO field is set during initialization
1429 * to mc_filter_type.
1431 static s32 ixgbe_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr)
1435 switch (hw->mac.mc_filter_type) {
1436 case 0: /* use bits [47:36] of the address */
1437 vector = ((mc_addr[4] >> 4) | (((u16)mc_addr[5]) << 4));
1439 case 1: /* use bits [46:35] of the address */
1440 vector = ((mc_addr[4] >> 3) | (((u16)mc_addr[5]) << 5));
1442 case 2: /* use bits [45:34] of the address */
1443 vector = ((mc_addr[4] >> 2) | (((u16)mc_addr[5]) << 6));
1445 case 3: /* use bits [43:32] of the address */
1446 vector = ((mc_addr[4]) | (((u16)mc_addr[5]) << 8));
1448 default: /* Invalid mc_filter_type */
1449 hw_dbg(hw, "MC filter type param set incorrectly\n");
1453 /* vector can only be 12-bits or boundary will be exceeded */
1459 * ixgbe_set_mta - Set bit-vector in multicast table
1460 * @hw: pointer to hardware structure
1461 * @hash_value: Multicast address hash value
1463 * Sets the bit-vector in the multicast table.
1465 static void ixgbe_set_mta(struct ixgbe_hw *hw, u8 *mc_addr)
1472 hw->addr_ctrl.mta_in_use++;
1474 vector = ixgbe_mta_vector(hw, mc_addr);
1475 hw_dbg(hw, " bit-vector = 0x%03X\n", vector);
1478 * The MTA is a register array of 128 32-bit registers. It is treated
1479 * like an array of 4096 bits. We want to set bit
1480 * BitArray[vector_value]. So we figure out what register the bit is
1481 * in, read it, OR in the new bit, then write back the new value. The
1482 * register is determined by the upper 7 bits of the vector value and
1483 * the bit within that register are determined by the lower 5 bits of
1486 vector_reg = (vector >> 5) & 0x7F;
1487 vector_bit = vector & 0x1F;
1488 mta_reg = IXGBE_READ_REG(hw, IXGBE_MTA(vector_reg));
1489 mta_reg |= (1 << vector_bit);
1490 IXGBE_WRITE_REG(hw, IXGBE_MTA(vector_reg), mta_reg);
1494 * ixgbe_update_mc_addr_list_generic - Updates MAC list of multicast addresses
1495 * @hw: pointer to hardware structure
1496 * @netdev: pointer to net device structure
1498 * The given list replaces any existing list. Clears the MC addrs from receive
1499 * address registers and the multicast table. Uses unused receive address
1500 * registers for the first multicast addresses, and hashes the rest into the
1503 s32 ixgbe_update_mc_addr_list_generic(struct ixgbe_hw *hw,
1504 struct net_device *netdev)
1506 struct netdev_hw_addr *ha;
1510 * Set the new number of MC addresses that we are being requested to
1513 hw->addr_ctrl.num_mc_addrs = netdev_mc_count(netdev);
1514 hw->addr_ctrl.mta_in_use = 0;
1517 hw_dbg(hw, " Clearing MTA\n");
1518 for (i = 0; i < hw->mac.mcft_size; i++)
1519 IXGBE_WRITE_REG(hw, IXGBE_MTA(i), 0);
1521 /* Add the new addresses */
1522 netdev_for_each_mc_addr(ha, netdev) {
1523 hw_dbg(hw, " Adding the multicast addresses:\n");
1524 ixgbe_set_mta(hw, ha->addr);
1528 if (hw->addr_ctrl.mta_in_use > 0)
1529 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL,
1530 IXGBE_MCSTCTRL_MFE | hw->mac.mc_filter_type);
1532 hw_dbg(hw, "ixgbe_update_mc_addr_list_generic Complete\n");
1537 * ixgbe_enable_mc_generic - Enable multicast address in RAR
1538 * @hw: pointer to hardware structure
1540 * Enables multicast address in RAR and the use of the multicast hash table.
1542 s32 ixgbe_enable_mc_generic(struct ixgbe_hw *hw)
1545 u32 rar_entries = hw->mac.num_rar_entries;
1546 struct ixgbe_addr_filter_info *a = &hw->addr_ctrl;
1548 if (a->mc_addr_in_rar_count > 0)
1549 for (i = (rar_entries - a->mc_addr_in_rar_count);
1550 i < rar_entries; i++)
1551 ixgbe_enable_rar(hw, i);
1553 if (a->mta_in_use > 0)
1554 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, IXGBE_MCSTCTRL_MFE |
1555 hw->mac.mc_filter_type);
1561 * ixgbe_disable_mc_generic - Disable multicast address in RAR
1562 * @hw: pointer to hardware structure
1564 * Disables multicast address in RAR and the use of the multicast hash table.
1566 s32 ixgbe_disable_mc_generic(struct ixgbe_hw *hw)
1569 u32 rar_entries = hw->mac.num_rar_entries;
1570 struct ixgbe_addr_filter_info *a = &hw->addr_ctrl;
1572 if (a->mc_addr_in_rar_count > 0)
1573 for (i = (rar_entries - a->mc_addr_in_rar_count);
1574 i < rar_entries; i++)
1575 ixgbe_disable_rar(hw, i);
1577 if (a->mta_in_use > 0)
1578 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, hw->mac.mc_filter_type);
1584 * ixgbe_fc_enable_generic - Enable flow control
1585 * @hw: pointer to hardware structure
1586 * @packetbuf_num: packet buffer number (0-7)
1588 * Enable flow control according to the current settings.
1590 s32 ixgbe_fc_enable_generic(struct ixgbe_hw *hw, s32 packetbuf_num)
1593 u32 mflcn_reg, fccfg_reg;
1599 if (hw->fc.requested_mode == ixgbe_fc_pfc)
1602 #endif /* CONFIG_DCB */
1603 /* Negotiate the fc mode to use */
1604 ret_val = ixgbe_fc_autoneg(hw);
1608 /* Disable any previous flow control settings */
1609 mflcn_reg = IXGBE_READ_REG(hw, IXGBE_MFLCN);
1610 mflcn_reg &= ~(IXGBE_MFLCN_RFCE | IXGBE_MFLCN_RPFCE);
1612 fccfg_reg = IXGBE_READ_REG(hw, IXGBE_FCCFG);
1613 fccfg_reg &= ~(IXGBE_FCCFG_TFCE_802_3X | IXGBE_FCCFG_TFCE_PRIORITY);
1616 * The possible values of fc.current_mode are:
1617 * 0: Flow control is completely disabled
1618 * 1: Rx flow control is enabled (we can receive pause frames,
1619 * but not send pause frames).
1620 * 2: Tx flow control is enabled (we can send pause frames but
1621 * we do not support receiving pause frames).
1622 * 3: Both Rx and Tx flow control (symmetric) are enabled.
1623 * 4: Priority Flow Control is enabled.
1626 switch (hw->fc.current_mode) {
1629 * Flow control is disabled by software override or autoneg.
1630 * The code below will actually disable it in the HW.
1633 case ixgbe_fc_rx_pause:
1635 * Rx Flow control is enabled and Tx Flow control is
1636 * disabled by software override. Since there really
1637 * isn't a way to advertise that we are capable of RX
1638 * Pause ONLY, we will advertise that we support both
1639 * symmetric and asymmetric Rx PAUSE. Later, we will
1640 * disable the adapter's ability to send PAUSE frames.
1642 mflcn_reg |= IXGBE_MFLCN_RFCE;
1644 case ixgbe_fc_tx_pause:
1646 * Tx Flow control is enabled, and Rx Flow control is
1647 * disabled by software override.
1649 fccfg_reg |= IXGBE_FCCFG_TFCE_802_3X;
1652 /* Flow control (both Rx and Tx) is enabled by SW override. */
1653 mflcn_reg |= IXGBE_MFLCN_RFCE;
1654 fccfg_reg |= IXGBE_FCCFG_TFCE_802_3X;
1660 #endif /* CONFIG_DCB */
1662 hw_dbg(hw, "Flow control param set incorrectly\n");
1663 ret_val = IXGBE_ERR_CONFIG;
1668 /* Set 802.3x based flow control settings. */
1669 mflcn_reg |= IXGBE_MFLCN_DPF;
1670 IXGBE_WRITE_REG(hw, IXGBE_MFLCN, mflcn_reg);
1671 IXGBE_WRITE_REG(hw, IXGBE_FCCFG, fccfg_reg);
1673 rx_pba_size = IXGBE_READ_REG(hw, IXGBE_RXPBSIZE(packetbuf_num));
1674 rx_pba_size >>= IXGBE_RXPBSIZE_SHIFT;
1676 fcrth = (rx_pba_size - hw->fc.high_water) << 10;
1677 fcrtl = (rx_pba_size - hw->fc.low_water) << 10;
1679 if (hw->fc.current_mode & ixgbe_fc_tx_pause) {
1680 fcrth |= IXGBE_FCRTH_FCEN;
1681 if (hw->fc.send_xon)
1682 fcrtl |= IXGBE_FCRTL_XONE;
1685 IXGBE_WRITE_REG(hw, IXGBE_FCRTH_82599(packetbuf_num), fcrth);
1686 IXGBE_WRITE_REG(hw, IXGBE_FCRTL_82599(packetbuf_num), fcrtl);
1688 /* Configure pause time (2 TCs per register) */
1689 reg = IXGBE_READ_REG(hw, IXGBE_FCTTV(packetbuf_num / 2));
1690 if ((packetbuf_num & 1) == 0)
1691 reg = (reg & 0xFFFF0000) | hw->fc.pause_time;
1693 reg = (reg & 0x0000FFFF) | (hw->fc.pause_time << 16);
1694 IXGBE_WRITE_REG(hw, IXGBE_FCTTV(packetbuf_num / 2), reg);
1696 IXGBE_WRITE_REG(hw, IXGBE_FCRTV, (hw->fc.pause_time >> 1));
1703 * ixgbe_fc_autoneg - Configure flow control
1704 * @hw: pointer to hardware structure
1706 * Compares our advertised flow control capabilities to those advertised by
1707 * our link partner, and determines the proper flow control mode to use.
1709 s32 ixgbe_fc_autoneg(struct ixgbe_hw *hw)
1712 ixgbe_link_speed speed;
1713 u32 pcs_anadv_reg, pcs_lpab_reg, linkstat;
1714 u32 links2, anlp1_reg, autoc_reg, links;
1718 * AN should have completed when the cable was plugged in.
1719 * Look for reasons to bail out. Bail out if:
1720 * - FC autoneg is disabled, or if
1723 * Since we're being called from an LSC, link is already known to be up.
1724 * So use link_up_wait_to_complete=false.
1726 hw->mac.ops.check_link(hw, &speed, &link_up, false);
1728 if (hw->fc.disable_fc_autoneg || (!link_up)) {
1729 hw->fc.fc_was_autonegged = false;
1730 hw->fc.current_mode = hw->fc.requested_mode;
1735 * On backplane, bail out if
1736 * - backplane autoneg was not completed, or if
1737 * - we are 82599 and link partner is not AN enabled
1739 if (hw->phy.media_type == ixgbe_media_type_backplane) {
1740 links = IXGBE_READ_REG(hw, IXGBE_LINKS);
1741 if ((links & IXGBE_LINKS_KX_AN_COMP) == 0) {
1742 hw->fc.fc_was_autonegged = false;
1743 hw->fc.current_mode = hw->fc.requested_mode;
1747 if (hw->mac.type == ixgbe_mac_82599EB) {
1748 links2 = IXGBE_READ_REG(hw, IXGBE_LINKS2);
1749 if ((links2 & IXGBE_LINKS2_AN_SUPPORTED) == 0) {
1750 hw->fc.fc_was_autonegged = false;
1751 hw->fc.current_mode = hw->fc.requested_mode;
1758 * On multispeed fiber at 1g, bail out if
1759 * - link is up but AN did not complete, or if
1760 * - link is up and AN completed but timed out
1762 if (hw->phy.multispeed_fiber && (speed == IXGBE_LINK_SPEED_1GB_FULL)) {
1763 linkstat = IXGBE_READ_REG(hw, IXGBE_PCS1GLSTA);
1764 if (((linkstat & IXGBE_PCS1GLSTA_AN_COMPLETE) == 0) ||
1765 ((linkstat & IXGBE_PCS1GLSTA_AN_TIMED_OUT) == 1)) {
1766 hw->fc.fc_was_autonegged = false;
1767 hw->fc.current_mode = hw->fc.requested_mode;
1774 * - copper or CX4 adapters
1775 * - fiber adapters running at 10gig
1777 if ((hw->phy.media_type == ixgbe_media_type_copper) ||
1778 (hw->phy.media_type == ixgbe_media_type_cx4) ||
1779 ((hw->phy.media_type == ixgbe_media_type_fiber) &&
1780 (speed == IXGBE_LINK_SPEED_10GB_FULL))) {
1781 hw->fc.fc_was_autonegged = false;
1782 hw->fc.current_mode = hw->fc.requested_mode;
1787 * Read the AN advertisement and LP ability registers and resolve
1788 * local flow control settings accordingly
1790 if ((speed == IXGBE_LINK_SPEED_1GB_FULL) &&
1791 (hw->phy.media_type != ixgbe_media_type_backplane)) {
1792 pcs_anadv_reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANA);
1793 pcs_lpab_reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANLP);
1794 if ((pcs_anadv_reg & IXGBE_PCS1GANA_SYM_PAUSE) &&
1795 (pcs_lpab_reg & IXGBE_PCS1GANA_SYM_PAUSE)) {
1797 * Now we need to check if the user selected Rx ONLY
1798 * of pause frames. In this case, we had to advertise
1799 * FULL flow control because we could not advertise RX
1800 * ONLY. Hence, we must now check to see if we need to
1801 * turn OFF the TRANSMISSION of PAUSE frames.
1803 if (hw->fc.requested_mode == ixgbe_fc_full) {
1804 hw->fc.current_mode = ixgbe_fc_full;
1805 hw_dbg(hw, "Flow Control = FULL.\n");
1807 hw->fc.current_mode = ixgbe_fc_rx_pause;
1808 hw_dbg(hw, "Flow Control=RX PAUSE only\n");
1810 } else if (!(pcs_anadv_reg & IXGBE_PCS1GANA_SYM_PAUSE) &&
1811 (pcs_anadv_reg & IXGBE_PCS1GANA_ASM_PAUSE) &&
1812 (pcs_lpab_reg & IXGBE_PCS1GANA_SYM_PAUSE) &&
1813 (pcs_lpab_reg & IXGBE_PCS1GANA_ASM_PAUSE)) {
1814 hw->fc.current_mode = ixgbe_fc_tx_pause;
1815 hw_dbg(hw, "Flow Control = TX PAUSE frames only.\n");
1816 } else if ((pcs_anadv_reg & IXGBE_PCS1GANA_SYM_PAUSE) &&
1817 (pcs_anadv_reg & IXGBE_PCS1GANA_ASM_PAUSE) &&
1818 !(pcs_lpab_reg & IXGBE_PCS1GANA_SYM_PAUSE) &&
1819 (pcs_lpab_reg & IXGBE_PCS1GANA_ASM_PAUSE)) {
1820 hw->fc.current_mode = ixgbe_fc_rx_pause;
1821 hw_dbg(hw, "Flow Control = RX PAUSE frames only.\n");
1823 hw->fc.current_mode = ixgbe_fc_none;
1824 hw_dbg(hw, "Flow Control = NONE.\n");
1828 if (hw->phy.media_type == ixgbe_media_type_backplane) {
1830 * Read the 10g AN autoc and LP ability registers and resolve
1831 * local flow control settings accordingly
1833 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
1834 anlp1_reg = IXGBE_READ_REG(hw, IXGBE_ANLP1);
1836 if ((autoc_reg & IXGBE_AUTOC_SYM_PAUSE) &&
1837 (anlp1_reg & IXGBE_ANLP1_SYM_PAUSE)) {
1839 * Now we need to check if the user selected Rx ONLY
1840 * of pause frames. In this case, we had to advertise
1841 * FULL flow control because we could not advertise RX
1842 * ONLY. Hence, we must now check to see if we need to
1843 * turn OFF the TRANSMISSION of PAUSE frames.
1845 if (hw->fc.requested_mode == ixgbe_fc_full) {
1846 hw->fc.current_mode = ixgbe_fc_full;
1847 hw_dbg(hw, "Flow Control = FULL.\n");
1849 hw->fc.current_mode = ixgbe_fc_rx_pause;
1850 hw_dbg(hw, "Flow Control=RX PAUSE only\n");
1852 } else if (!(autoc_reg & IXGBE_AUTOC_SYM_PAUSE) &&
1853 (autoc_reg & IXGBE_AUTOC_ASM_PAUSE) &&
1854 (anlp1_reg & IXGBE_ANLP1_SYM_PAUSE) &&
1855 (anlp1_reg & IXGBE_ANLP1_ASM_PAUSE)) {
1856 hw->fc.current_mode = ixgbe_fc_tx_pause;
1857 hw_dbg(hw, "Flow Control = TX PAUSE frames only.\n");
1858 } else if ((autoc_reg & IXGBE_AUTOC_SYM_PAUSE) &&
1859 (autoc_reg & IXGBE_AUTOC_ASM_PAUSE) &&
1860 !(anlp1_reg & IXGBE_ANLP1_SYM_PAUSE) &&
1861 (anlp1_reg & IXGBE_ANLP1_ASM_PAUSE)) {
1862 hw->fc.current_mode = ixgbe_fc_rx_pause;
1863 hw_dbg(hw, "Flow Control = RX PAUSE frames only.\n");
1865 hw->fc.current_mode = ixgbe_fc_none;
1866 hw_dbg(hw, "Flow Control = NONE.\n");
1869 /* Record that current_mode is the result of a successful autoneg */
1870 hw->fc.fc_was_autonegged = true;
1877 * ixgbe_setup_fc - Set up flow control
1878 * @hw: pointer to hardware structure
1880 * Called at init time to set up flow control.
1882 static s32 ixgbe_setup_fc(struct ixgbe_hw *hw, s32 packetbuf_num)
1888 if (hw->fc.requested_mode == ixgbe_fc_pfc) {
1889 hw->fc.current_mode = hw->fc.requested_mode;
1894 /* Validate the packetbuf configuration */
1895 if (packetbuf_num < 0 || packetbuf_num > 7) {
1896 hw_dbg(hw, "Invalid packet buffer number [%d], expected range "
1897 "is 0-7\n", packetbuf_num);
1898 ret_val = IXGBE_ERR_INVALID_LINK_SETTINGS;
1903 * Validate the water mark configuration. Zero water marks are invalid
1904 * because it causes the controller to just blast out fc packets.
1906 if (!hw->fc.low_water || !hw->fc.high_water || !hw->fc.pause_time) {
1907 hw_dbg(hw, "Invalid water mark configuration\n");
1908 ret_val = IXGBE_ERR_INVALID_LINK_SETTINGS;
1913 * Validate the requested mode. Strict IEEE mode does not allow
1914 * ixgbe_fc_rx_pause because it will cause us to fail at UNH.
1916 if (hw->fc.strict_ieee && hw->fc.requested_mode == ixgbe_fc_rx_pause) {
1917 hw_dbg(hw, "ixgbe_fc_rx_pause not valid in strict "
1919 ret_val = IXGBE_ERR_INVALID_LINK_SETTINGS;
1924 * 10gig parts do not have a word in the EEPROM to determine the
1925 * default flow control setting, so we explicitly set it to full.
1927 if (hw->fc.requested_mode == ixgbe_fc_default)
1928 hw->fc.requested_mode = ixgbe_fc_full;
1931 * Set up the 1G flow control advertisement registers so the HW will be
1932 * able to do fc autoneg once the cable is plugged in. If we end up
1933 * using 10g instead, this is harmless.
1935 reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANA);
1938 * The possible values of fc.requested_mode are:
1939 * 0: Flow control is completely disabled
1940 * 1: Rx flow control is enabled (we can receive pause frames,
1941 * but not send pause frames).
1942 * 2: Tx flow control is enabled (we can send pause frames but
1943 * we do not support receiving pause frames).
1944 * 3: Both Rx and Tx flow control (symmetric) are enabled.
1946 * 4: Priority Flow Control is enabled.
1950 switch (hw->fc.requested_mode) {
1952 /* Flow control completely disabled by software override. */
1953 reg &= ~(IXGBE_PCS1GANA_SYM_PAUSE | IXGBE_PCS1GANA_ASM_PAUSE);
1955 case ixgbe_fc_rx_pause:
1957 * Rx Flow control is enabled and Tx Flow control is
1958 * disabled by software override. Since there really
1959 * isn't a way to advertise that we are capable of RX
1960 * Pause ONLY, we will advertise that we support both
1961 * symmetric and asymmetric Rx PAUSE. Later, we will
1962 * disable the adapter's ability to send PAUSE frames.
1964 reg |= (IXGBE_PCS1GANA_SYM_PAUSE | IXGBE_PCS1GANA_ASM_PAUSE);
1966 case ixgbe_fc_tx_pause:
1968 * Tx Flow control is enabled, and Rx Flow control is
1969 * disabled by software override.
1971 reg |= (IXGBE_PCS1GANA_ASM_PAUSE);
1972 reg &= ~(IXGBE_PCS1GANA_SYM_PAUSE);
1975 /* Flow control (both Rx and Tx) is enabled by SW override. */
1976 reg |= (IXGBE_PCS1GANA_SYM_PAUSE | IXGBE_PCS1GANA_ASM_PAUSE);
1982 #endif /* CONFIG_DCB */
1984 hw_dbg(hw, "Flow control param set incorrectly\n");
1985 ret_val = IXGBE_ERR_CONFIG;
1990 IXGBE_WRITE_REG(hw, IXGBE_PCS1GANA, reg);
1991 reg = IXGBE_READ_REG(hw, IXGBE_PCS1GLCTL);
1993 /* Disable AN timeout */
1994 if (hw->fc.strict_ieee)
1995 reg &= ~IXGBE_PCS1GLCTL_AN_1G_TIMEOUT_EN;
1997 IXGBE_WRITE_REG(hw, IXGBE_PCS1GLCTL, reg);
1998 hw_dbg(hw, "Set up FC; PCS1GLCTL = 0x%08X\n", reg);
2001 * Set up the 10G flow control advertisement registers so the HW
2002 * can do fc autoneg once the cable is plugged in. If we end up
2003 * using 1g instead, this is harmless.
2005 reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
2008 * The possible values of fc.requested_mode are:
2009 * 0: Flow control is completely disabled
2010 * 1: Rx flow control is enabled (we can receive pause frames,
2011 * but not send pause frames).
2012 * 2: Tx flow control is enabled (we can send pause frames but
2013 * we do not support receiving pause frames).
2014 * 3: Both Rx and Tx flow control (symmetric) are enabled.
2017 switch (hw->fc.requested_mode) {
2019 /* Flow control completely disabled by software override. */
2020 reg &= ~(IXGBE_AUTOC_SYM_PAUSE | IXGBE_AUTOC_ASM_PAUSE);
2022 case ixgbe_fc_rx_pause:
2024 * Rx Flow control is enabled and Tx Flow control is
2025 * disabled by software override. Since there really
2026 * isn't a way to advertise that we are capable of RX
2027 * Pause ONLY, we will advertise that we support both
2028 * symmetric and asymmetric Rx PAUSE. Later, we will
2029 * disable the adapter's ability to send PAUSE frames.
2031 reg |= (IXGBE_AUTOC_SYM_PAUSE | IXGBE_AUTOC_ASM_PAUSE);
2033 case ixgbe_fc_tx_pause:
2035 * Tx Flow control is enabled, and Rx Flow control is
2036 * disabled by software override.
2038 reg |= (IXGBE_AUTOC_ASM_PAUSE);
2039 reg &= ~(IXGBE_AUTOC_SYM_PAUSE);
2042 /* Flow control (both Rx and Tx) is enabled by SW override. */
2043 reg |= (IXGBE_AUTOC_SYM_PAUSE | IXGBE_AUTOC_ASM_PAUSE);
2049 #endif /* CONFIG_DCB */
2051 hw_dbg(hw, "Flow control param set incorrectly\n");
2052 ret_val = IXGBE_ERR_CONFIG;
2057 * AUTOC restart handles negotiation of 1G and 10G. There is
2058 * no need to set the PCS1GCTL register.
2060 reg |= IXGBE_AUTOC_AN_RESTART;
2061 IXGBE_WRITE_REG(hw, IXGBE_AUTOC, reg);
2062 hw_dbg(hw, "Set up FC; IXGBE_AUTOC = 0x%08X\n", reg);
2069 * ixgbe_disable_pcie_master - Disable PCI-express master access
2070 * @hw: pointer to hardware structure
2072 * Disables PCI-Express master access and verifies there are no pending
2073 * requests. IXGBE_ERR_MASTER_REQUESTS_PENDING is returned if master disable
2074 * bit hasn't caused the master requests to be disabled, else 0
2075 * is returned signifying master requests disabled.
2077 s32 ixgbe_disable_pcie_master(struct ixgbe_hw *hw)
2081 u32 number_of_queues;
2082 s32 status = IXGBE_ERR_MASTER_REQUESTS_PENDING;
2084 /* Disable the receive unit by stopping each queue */
2085 number_of_queues = hw->mac.max_rx_queues;
2086 for (i = 0; i < number_of_queues; i++) {
2087 reg_val = IXGBE_READ_REG(hw, IXGBE_RXDCTL(i));
2088 if (reg_val & IXGBE_RXDCTL_ENABLE) {
2089 reg_val &= ~IXGBE_RXDCTL_ENABLE;
2090 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(i), reg_val);
2094 reg_val = IXGBE_READ_REG(hw, IXGBE_CTRL);
2095 reg_val |= IXGBE_CTRL_GIO_DIS;
2096 IXGBE_WRITE_REG(hw, IXGBE_CTRL, reg_val);
2098 for (i = 0; i < IXGBE_PCI_MASTER_DISABLE_TIMEOUT; i++) {
2099 if (!(IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_GIO)) {
2111 * ixgbe_acquire_swfw_sync - Acquire SWFW semaphore
2112 * @hw: pointer to hardware structure
2113 * @mask: Mask to specify which semaphore to acquire
2115 * Acquires the SWFW semaphore thought the GSSR register for the specified
2116 * function (CSR, PHY0, PHY1, EEPROM, Flash)
2118 s32 ixgbe_acquire_swfw_sync(struct ixgbe_hw *hw, u16 mask)
2122 u32 fwmask = mask << 5;
2126 if (ixgbe_get_eeprom_semaphore(hw))
2127 return IXGBE_ERR_SWFW_SYNC;
2129 gssr = IXGBE_READ_REG(hw, IXGBE_GSSR);
2130 if (!(gssr & (fwmask | swmask)))
2134 * Firmware currently using resource (fwmask) or other software
2135 * thread currently using resource (swmask)
2137 ixgbe_release_eeprom_semaphore(hw);
2143 hw_dbg(hw, "Driver can't access resource, GSSR timeout.\n");
2144 return IXGBE_ERR_SWFW_SYNC;
2148 IXGBE_WRITE_REG(hw, IXGBE_GSSR, gssr);
2150 ixgbe_release_eeprom_semaphore(hw);
2155 * ixgbe_release_swfw_sync - Release SWFW semaphore
2156 * @hw: pointer to hardware structure
2157 * @mask: Mask to specify which semaphore to release
2159 * Releases the SWFW semaphore thought the GSSR register for the specified
2160 * function (CSR, PHY0, PHY1, EEPROM, Flash)
2162 void ixgbe_release_swfw_sync(struct ixgbe_hw *hw, u16 mask)
2167 ixgbe_get_eeprom_semaphore(hw);
2169 gssr = IXGBE_READ_REG(hw, IXGBE_GSSR);
2171 IXGBE_WRITE_REG(hw, IXGBE_GSSR, gssr);
2173 ixgbe_release_eeprom_semaphore(hw);
2177 * ixgbe_enable_rx_dma_generic - Enable the Rx DMA unit
2178 * @hw: pointer to hardware structure
2179 * @regval: register value to write to RXCTRL
2181 * Enables the Rx DMA unit
2183 s32 ixgbe_enable_rx_dma_generic(struct ixgbe_hw *hw, u32 regval)
2185 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, regval);
2191 * ixgbe_blink_led_start_generic - Blink LED based on index.
2192 * @hw: pointer to hardware structure
2193 * @index: led number to blink
2195 s32 ixgbe_blink_led_start_generic(struct ixgbe_hw *hw, u32 index)
2197 ixgbe_link_speed speed = 0;
2199 u32 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
2200 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
2203 * Link must be up to auto-blink the LEDs;
2204 * Force it if link is down.
2206 hw->mac.ops.check_link(hw, &speed, &link_up, false);
2209 autoc_reg |= IXGBE_AUTOC_AN_RESTART;
2210 autoc_reg |= IXGBE_AUTOC_FLU;
2211 IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc_reg);
2215 led_reg &= ~IXGBE_LED_MODE_MASK(index);
2216 led_reg |= IXGBE_LED_BLINK(index);
2217 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
2218 IXGBE_WRITE_FLUSH(hw);
2224 * ixgbe_blink_led_stop_generic - Stop blinking LED based on index.
2225 * @hw: pointer to hardware structure
2226 * @index: led number to stop blinking
2228 s32 ixgbe_blink_led_stop_generic(struct ixgbe_hw *hw, u32 index)
2230 u32 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
2231 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
2233 autoc_reg &= ~IXGBE_AUTOC_FLU;
2234 autoc_reg |= IXGBE_AUTOC_AN_RESTART;
2235 IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc_reg);
2237 led_reg &= ~IXGBE_LED_MODE_MASK(index);
2238 led_reg &= ~IXGBE_LED_BLINK(index);
2239 led_reg |= IXGBE_LED_LINK_ACTIVE << IXGBE_LED_MODE_SHIFT(index);
2240 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
2241 IXGBE_WRITE_FLUSH(hw);
2247 * ixgbe_get_san_mac_addr_offset - Get SAN MAC address offset from the EEPROM
2248 * @hw: pointer to hardware structure
2249 * @san_mac_offset: SAN MAC address offset
2251 * This function will read the EEPROM location for the SAN MAC address
2252 * pointer, and returns the value at that location. This is used in both
2253 * get and set mac_addr routines.
2255 static s32 ixgbe_get_san_mac_addr_offset(struct ixgbe_hw *hw,
2256 u16 *san_mac_offset)
2259 * First read the EEPROM pointer to see if the MAC addresses are
2262 hw->eeprom.ops.read(hw, IXGBE_SAN_MAC_ADDR_PTR, san_mac_offset);
2268 * ixgbe_get_san_mac_addr_generic - SAN MAC address retrieval from the EEPROM
2269 * @hw: pointer to hardware structure
2270 * @san_mac_addr: SAN MAC address
2272 * Reads the SAN MAC address from the EEPROM, if it's available. This is
2273 * per-port, so set_lan_id() must be called before reading the addresses.
2274 * set_lan_id() is called by identify_sfp(), but this cannot be relied
2275 * upon for non-SFP connections, so we must call it here.
2277 s32 ixgbe_get_san_mac_addr_generic(struct ixgbe_hw *hw, u8 *san_mac_addr)
2279 u16 san_mac_data, san_mac_offset;
2283 * First read the EEPROM pointer to see if the MAC addresses are
2284 * available. If they're not, no point in calling set_lan_id() here.
2286 ixgbe_get_san_mac_addr_offset(hw, &san_mac_offset);
2288 if ((san_mac_offset == 0) || (san_mac_offset == 0xFFFF)) {
2290 * No addresses available in this EEPROM. It's not an
2291 * error though, so just wipe the local address and return.
2293 for (i = 0; i < 6; i++)
2294 san_mac_addr[i] = 0xFF;
2296 goto san_mac_addr_out;
2299 /* make sure we know which port we need to program */
2300 hw->mac.ops.set_lan_id(hw);
2301 /* apply the port offset to the address offset */
2302 (hw->bus.func) ? (san_mac_offset += IXGBE_SAN_MAC_ADDR_PORT1_OFFSET) :
2303 (san_mac_offset += IXGBE_SAN_MAC_ADDR_PORT0_OFFSET);
2304 for (i = 0; i < 3; i++) {
2305 hw->eeprom.ops.read(hw, san_mac_offset, &san_mac_data);
2306 san_mac_addr[i * 2] = (u8)(san_mac_data);
2307 san_mac_addr[i * 2 + 1] = (u8)(san_mac_data >> 8);
2316 * ixgbe_get_pcie_msix_count_generic - Gets MSI-X vector count
2317 * @hw: pointer to hardware structure
2319 * Read PCIe configuration space, and get the MSI-X vector count from
2320 * the capabilities table.
2322 u32 ixgbe_get_pcie_msix_count_generic(struct ixgbe_hw *hw)
2324 struct ixgbe_adapter *adapter = hw->back;
2326 pci_read_config_word(adapter->pdev, IXGBE_PCIE_MSIX_82599_CAPS,
2328 msix_count &= IXGBE_PCIE_MSIX_TBL_SZ_MASK;
2330 /* MSI-X count is zero-based in HW, so increment to give proper value */
2337 * ixgbe_clear_vmdq_generic - Disassociate a VMDq pool index from a rx address
2338 * @hw: pointer to hardware struct
2339 * @rar: receive address register index to disassociate
2340 * @vmdq: VMDq pool index to remove from the rar
2342 s32 ixgbe_clear_vmdq_generic(struct ixgbe_hw *hw, u32 rar, u32 vmdq)
2344 u32 mpsar_lo, mpsar_hi;
2345 u32 rar_entries = hw->mac.num_rar_entries;
2347 if (rar < rar_entries) {
2348 mpsar_lo = IXGBE_READ_REG(hw, IXGBE_MPSAR_LO(rar));
2349 mpsar_hi = IXGBE_READ_REG(hw, IXGBE_MPSAR_HI(rar));
2351 if (!mpsar_lo && !mpsar_hi)
2354 if (vmdq == IXGBE_CLEAR_VMDQ_ALL) {
2356 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), 0);
2360 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), 0);
2363 } else if (vmdq < 32) {
2364 mpsar_lo &= ~(1 << vmdq);
2365 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), mpsar_lo);
2367 mpsar_hi &= ~(1 << (vmdq - 32));
2368 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), mpsar_hi);
2371 /* was that the last pool using this rar? */
2372 if (mpsar_lo == 0 && mpsar_hi == 0 && rar != 0)
2373 hw->mac.ops.clear_rar(hw, rar);
2375 hw_dbg(hw, "RAR index %d is out of range.\n", rar);
2383 * ixgbe_set_vmdq_generic - Associate a VMDq pool index with a rx address
2384 * @hw: pointer to hardware struct
2385 * @rar: receive address register index to associate with a VMDq index
2386 * @vmdq: VMDq pool index
2388 s32 ixgbe_set_vmdq_generic(struct ixgbe_hw *hw, u32 rar, u32 vmdq)
2391 u32 rar_entries = hw->mac.num_rar_entries;
2393 if (rar < rar_entries) {
2395 mpsar = IXGBE_READ_REG(hw, IXGBE_MPSAR_LO(rar));
2397 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), mpsar);
2399 mpsar = IXGBE_READ_REG(hw, IXGBE_MPSAR_HI(rar));
2400 mpsar |= 1 << (vmdq - 32);
2401 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), mpsar);
2404 hw_dbg(hw, "RAR index %d is out of range.\n", rar);
2410 * ixgbe_init_uta_tables_generic - Initialize the Unicast Table Array
2411 * @hw: pointer to hardware structure
2413 s32 ixgbe_init_uta_tables_generic(struct ixgbe_hw *hw)
2418 for (i = 0; i < 128; i++)
2419 IXGBE_WRITE_REG(hw, IXGBE_UTA(i), 0);
2425 * ixgbe_find_vlvf_slot - find the vlanid or the first empty slot
2426 * @hw: pointer to hardware structure
2427 * @vlan: VLAN id to write to VLAN filter
2429 * return the VLVF index where this VLAN id should be placed
2432 static s32 ixgbe_find_vlvf_slot(struct ixgbe_hw *hw, u32 vlan)
2435 u32 first_empty_slot = 0;
2438 /* short cut the special case */
2443 * Search for the vlan id in the VLVF entries. Save off the first empty
2444 * slot found along the way
2446 for (regindex = 1; regindex < IXGBE_VLVF_ENTRIES; regindex++) {
2447 bits = IXGBE_READ_REG(hw, IXGBE_VLVF(regindex));
2448 if (!bits && !(first_empty_slot))
2449 first_empty_slot = regindex;
2450 else if ((bits & 0x0FFF) == vlan)
2455 * If regindex is less than IXGBE_VLVF_ENTRIES, then we found the vlan
2456 * in the VLVF. Else use the first empty VLVF register for this
2459 if (regindex >= IXGBE_VLVF_ENTRIES) {
2460 if (first_empty_slot)
2461 regindex = first_empty_slot;
2463 hw_dbg(hw, "No space in VLVF.\n");
2464 regindex = IXGBE_ERR_NO_SPACE;
2472 * ixgbe_set_vfta_generic - Set VLAN filter table
2473 * @hw: pointer to hardware structure
2474 * @vlan: VLAN id to write to VLAN filter
2475 * @vind: VMDq output index that maps queue to VLAN id in VFVFB
2476 * @vlan_on: boolean flag to turn on/off VLAN in VFVF
2478 * Turn on/off specified VLAN in the VLAN filter table.
2480 s32 ixgbe_set_vfta_generic(struct ixgbe_hw *hw, u32 vlan, u32 vind,
2489 bool vfta_changed = false;
2492 return IXGBE_ERR_PARAM;
2495 * this is a 2 part operation - first the VFTA, then the
2496 * VLVF and VLVFB if VT Mode is set
2497 * We don't write the VFTA until we know the VLVF part succeeded.
2501 * The VFTA is a bitstring made up of 128 32-bit registers
2502 * that enable the particular VLAN id, much like the MTA:
2503 * bits[11-5]: which register
2504 * bits[4-0]: which bit in the register
2506 regindex = (vlan >> 5) & 0x7F;
2507 bitindex = vlan & 0x1F;
2508 targetbit = (1 << bitindex);
2509 vfta = IXGBE_READ_REG(hw, IXGBE_VFTA(regindex));
2512 if (!(vfta & targetbit)) {
2514 vfta_changed = true;
2517 if ((vfta & targetbit)) {
2519 vfta_changed = true;
2526 * make sure the vlan is in VLVF
2527 * set the vind bit in the matching VLVFB
2529 * clear the pool bit and possibly the vind
2531 vt = IXGBE_READ_REG(hw, IXGBE_VT_CTL);
2532 if (vt & IXGBE_VT_CTL_VT_ENABLE) {
2535 vlvf_index = ixgbe_find_vlvf_slot(hw, vlan);
2540 /* set the pool bit */
2542 bits = IXGBE_READ_REG(hw,
2543 IXGBE_VLVFB(vlvf_index*2));
2544 bits |= (1 << vind);
2546 IXGBE_VLVFB(vlvf_index*2),
2549 bits = IXGBE_READ_REG(hw,
2550 IXGBE_VLVFB((vlvf_index*2)+1));
2551 bits |= (1 << (vind-32));
2553 IXGBE_VLVFB((vlvf_index*2)+1),
2557 /* clear the pool bit */
2559 bits = IXGBE_READ_REG(hw,
2560 IXGBE_VLVFB(vlvf_index*2));
2561 bits &= ~(1 << vind);
2563 IXGBE_VLVFB(vlvf_index*2),
2565 bits |= IXGBE_READ_REG(hw,
2566 IXGBE_VLVFB((vlvf_index*2)+1));
2568 bits = IXGBE_READ_REG(hw,
2569 IXGBE_VLVFB((vlvf_index*2)+1));
2570 bits &= ~(1 << (vind-32));
2572 IXGBE_VLVFB((vlvf_index*2)+1),
2574 bits |= IXGBE_READ_REG(hw,
2575 IXGBE_VLVFB(vlvf_index*2));
2580 * If there are still bits set in the VLVFB registers
2581 * for the VLAN ID indicated we need to see if the
2582 * caller is requesting that we clear the VFTA entry bit.
2583 * If the caller has requested that we clear the VFTA
2584 * entry bit but there are still pools/VFs using this VLAN
2585 * ID entry then ignore the request. We're not worried
2586 * about the case where we're turning the VFTA VLAN ID
2587 * entry bit on, only when requested to turn it off as
2588 * there may be multiple pools and/or VFs using the
2589 * VLAN ID entry. In that case we cannot clear the
2590 * VFTA bit until all pools/VFs using that VLAN ID have also
2591 * been cleared. This will be indicated by "bits" being
2595 IXGBE_WRITE_REG(hw, IXGBE_VLVF(vlvf_index),
2596 (IXGBE_VLVF_VIEN | vlan));
2598 /* someone wants to clear the vfta entry
2599 * but some pools/VFs are still using it.
2601 vfta_changed = false;
2605 IXGBE_WRITE_REG(hw, IXGBE_VLVF(vlvf_index), 0);
2609 IXGBE_WRITE_REG(hw, IXGBE_VFTA(regindex), vfta);
2615 * ixgbe_clear_vfta_generic - Clear VLAN filter table
2616 * @hw: pointer to hardware structure
2618 * Clears the VLAN filer table, and the VMDq index associated with the filter
2620 s32 ixgbe_clear_vfta_generic(struct ixgbe_hw *hw)
2624 for (offset = 0; offset < hw->mac.vft_size; offset++)
2625 IXGBE_WRITE_REG(hw, IXGBE_VFTA(offset), 0);
2627 for (offset = 0; offset < IXGBE_VLVF_ENTRIES; offset++) {
2628 IXGBE_WRITE_REG(hw, IXGBE_VLVF(offset), 0);
2629 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(offset*2), 0);
2630 IXGBE_WRITE_REG(hw, IXGBE_VLVFB((offset*2)+1), 0);
2637 * ixgbe_check_mac_link_generic - Determine link and speed status
2638 * @hw: pointer to hardware structure
2639 * @speed: pointer to link speed
2640 * @link_up: true when link is up
2641 * @link_up_wait_to_complete: bool used to wait for link up or not
2643 * Reads the links register to determine if link is up and the current speed
2645 s32 ixgbe_check_mac_link_generic(struct ixgbe_hw *hw, ixgbe_link_speed *speed,
2646 bool *link_up, bool link_up_wait_to_complete)
2651 links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
2652 if (link_up_wait_to_complete) {
2653 for (i = 0; i < IXGBE_LINK_UP_TIME; i++) {
2654 if (links_reg & IXGBE_LINKS_UP) {
2661 links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
2664 if (links_reg & IXGBE_LINKS_UP)
2670 if ((links_reg & IXGBE_LINKS_SPEED_82599) ==
2671 IXGBE_LINKS_SPEED_10G_82599)
2672 *speed = IXGBE_LINK_SPEED_10GB_FULL;
2673 else if ((links_reg & IXGBE_LINKS_SPEED_82599) ==
2674 IXGBE_LINKS_SPEED_1G_82599)
2675 *speed = IXGBE_LINK_SPEED_1GB_FULL;
2677 *speed = IXGBE_LINK_SPEED_100_FULL;
2679 /* if link is down, zero out the current_mode */
2680 if (*link_up == false) {
2681 hw->fc.current_mode = ixgbe_fc_none;
2682 hw->fc.fc_was_autonegged = false;
2689 * ixgbe_get_wwn_prefix_generic Get alternative WWNN/WWPN prefix from
2691 * @hw: pointer to hardware structure
2692 * @wwnn_prefix: the alternative WWNN prefix
2693 * @wwpn_prefix: the alternative WWPN prefix
2695 * This function will read the EEPROM from the alternative SAN MAC address
2696 * block to check the support for the alternative WWNN/WWPN prefix support.
2698 s32 ixgbe_get_wwn_prefix_generic(struct ixgbe_hw *hw, u16 *wwnn_prefix,
2702 u16 alt_san_mac_blk_offset;
2704 /* clear output first */
2705 *wwnn_prefix = 0xFFFF;
2706 *wwpn_prefix = 0xFFFF;
2708 /* check if alternative SAN MAC is supported */
2709 hw->eeprom.ops.read(hw, IXGBE_ALT_SAN_MAC_ADDR_BLK_PTR,
2710 &alt_san_mac_blk_offset);
2712 if ((alt_san_mac_blk_offset == 0) ||
2713 (alt_san_mac_blk_offset == 0xFFFF))
2714 goto wwn_prefix_out;
2716 /* check capability in alternative san mac address block */
2717 offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_CAPS_OFFSET;
2718 hw->eeprom.ops.read(hw, offset, &caps);
2719 if (!(caps & IXGBE_ALT_SAN_MAC_ADDR_CAPS_ALTWWN))
2720 goto wwn_prefix_out;
2722 /* get the corresponding prefix for WWNN/WWPN */
2723 offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_WWNN_OFFSET;
2724 hw->eeprom.ops.read(hw, offset, wwnn_prefix);
2726 offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_WWPN_OFFSET;
2727 hw->eeprom.ops.read(hw, offset, wwpn_prefix);