1 /*******************************************************************************
3 Copyright (c) 2001-2012, Intel Corporation
6 Redistribution and use in source and binary forms, with or without
7 modification, are permitted provided that the following conditions are met:
9 1. Redistributions of source code must retain the above copyright notice,
10 this list of conditions and the following disclaimer.
12 2. Redistributions in binary form must reproduce the above copyright
13 notice, this list of conditions and the following disclaimer in the
14 documentation and/or other materials provided with the distribution.
16 3. Neither the name of the Intel Corporation nor the names of its
17 contributors may be used to endorse or promote products derived from
18 this software without specific prior written permission.
20 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24 LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 POSSIBILITY OF SUCH DAMAGE.
32 ***************************************************************************/
34 #include "ixgbe_common.h"
35 #include "ixgbe_phy.h"
36 #include "ixgbe_api.h"
38 static s32 ixgbe_acquire_eeprom(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 s32 ixgbe_ready_eeprom(struct ixgbe_hw *hw);
42 static void ixgbe_standby_eeprom(struct ixgbe_hw *hw);
43 static void ixgbe_shift_out_eeprom_bits(struct ixgbe_hw *hw, u16 data,
45 static u16 ixgbe_shift_in_eeprom_bits(struct ixgbe_hw *hw, u16 count);
46 static void ixgbe_raise_eeprom_clk(struct ixgbe_hw *hw, u32 *eec);
47 static void ixgbe_lower_eeprom_clk(struct ixgbe_hw *hw, u32 *eec);
48 static void ixgbe_release_eeprom(struct ixgbe_hw *hw);
50 static s32 ixgbe_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr);
51 static s32 ixgbe_get_san_mac_addr_offset(struct ixgbe_hw *hw,
53 static s32 ixgbe_fc_autoneg_fiber(struct ixgbe_hw *hw);
54 static s32 ixgbe_fc_autoneg_backplane(struct ixgbe_hw *hw);
55 static s32 ixgbe_fc_autoneg_copper(struct ixgbe_hw *hw);
56 static s32 ixgbe_device_supports_autoneg_fc(struct ixgbe_hw *hw);
57 static s32 ixgbe_negotiate_fc(struct ixgbe_hw *hw, u32 adv_reg, u32 lp_reg,
58 u32 adv_sym, u32 adv_asm, u32 lp_sym, u32 lp_asm);
59 static s32 ixgbe_setup_fc(struct ixgbe_hw *hw, s32 packetbuf_num);
60 static s32 ixgbe_read_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset,
61 u16 words, u16 *data);
62 static s32 ixgbe_write_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset,
63 u16 words, u16 *data);
64 static s32 ixgbe_detect_eeprom_page_size_generic(struct ixgbe_hw *hw,
68 s32 ixgbe_find_vlvf_slot(struct ixgbe_hw *hw, u32 vlan);
71 * ixgbe_init_ops_generic - Inits function ptrs
72 * @hw: pointer to the hardware structure
74 * Initialize the function pointers.
76 s32 ixgbe_init_ops_generic(struct ixgbe_hw *hw)
78 struct ixgbe_eeprom_info *eeprom = &hw->eeprom;
79 struct ixgbe_mac_info *mac = &hw->mac;
80 u32 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
82 DEBUGFUNC("ixgbe_init_ops_generic");
85 eeprom->ops.init_params = &ixgbe_init_eeprom_params_generic;
86 /* If EEPROM is valid (bit 8 = 1), use EERD otherwise use bit bang */
87 if (eec & IXGBE_EEC_PRES) {
88 eeprom->ops.read = &ixgbe_read_eerd_generic;
89 eeprom->ops.read_buffer = &ixgbe_read_eerd_buffer_generic;
91 eeprom->ops.read = &ixgbe_read_eeprom_bit_bang_generic;
92 eeprom->ops.read_buffer =
93 &ixgbe_read_eeprom_buffer_bit_bang_generic;
95 eeprom->ops.write = &ixgbe_write_eeprom_generic;
96 eeprom->ops.write_buffer = &ixgbe_write_eeprom_buffer_bit_bang_generic;
97 eeprom->ops.validate_checksum =
98 &ixgbe_validate_eeprom_checksum_generic;
99 eeprom->ops.update_checksum = &ixgbe_update_eeprom_checksum_generic;
100 eeprom->ops.calc_checksum = &ixgbe_calc_eeprom_checksum_generic;
103 mac->ops.init_hw = &ixgbe_init_hw_generic;
104 mac->ops.reset_hw = NULL;
105 mac->ops.start_hw = &ixgbe_start_hw_generic;
106 mac->ops.clear_hw_cntrs = &ixgbe_clear_hw_cntrs_generic;
107 mac->ops.get_media_type = NULL;
108 mac->ops.get_supported_physical_layer = NULL;
109 mac->ops.enable_rx_dma = &ixgbe_enable_rx_dma_generic;
110 mac->ops.get_mac_addr = &ixgbe_get_mac_addr_generic;
111 mac->ops.stop_adapter = &ixgbe_stop_adapter_generic;
112 mac->ops.get_bus_info = &ixgbe_get_bus_info_generic;
113 mac->ops.set_lan_id = &ixgbe_set_lan_id_multi_port_pcie;
114 mac->ops.acquire_swfw_sync = &ixgbe_acquire_swfw_sync;
115 mac->ops.release_swfw_sync = &ixgbe_release_swfw_sync;
118 mac->ops.led_on = &ixgbe_led_on_generic;
119 mac->ops.led_off = &ixgbe_led_off_generic;
120 mac->ops.blink_led_start = &ixgbe_blink_led_start_generic;
121 mac->ops.blink_led_stop = &ixgbe_blink_led_stop_generic;
123 /* RAR, Multicast, VLAN */
124 mac->ops.set_rar = &ixgbe_set_rar_generic;
125 mac->ops.clear_rar = &ixgbe_clear_rar_generic;
126 mac->ops.insert_mac_addr = NULL;
127 mac->ops.set_vmdq = NULL;
128 mac->ops.clear_vmdq = NULL;
129 mac->ops.init_rx_addrs = &ixgbe_init_rx_addrs_generic;
130 mac->ops.update_uc_addr_list = &ixgbe_update_uc_addr_list_generic;
131 mac->ops.update_mc_addr_list = &ixgbe_update_mc_addr_list_generic;
132 mac->ops.enable_mc = &ixgbe_enable_mc_generic;
133 mac->ops.disable_mc = &ixgbe_disable_mc_generic;
134 mac->ops.clear_vfta = NULL;
135 mac->ops.set_vfta = NULL;
136 mac->ops.init_uta_tables = NULL;
139 mac->ops.fc_enable = &ixgbe_fc_enable_generic;
142 mac->ops.get_link_capabilities = NULL;
143 mac->ops.setup_link = NULL;
144 mac->ops.check_link = NULL;
146 return IXGBE_SUCCESS;
150 * ixgbe_start_hw_generic - Prepare hardware for Tx/Rx
151 * @hw: pointer to hardware structure
153 * Starts the hardware by filling the bus info structure and media type, clears
154 * all on chip counters, initializes receive address registers, multicast
155 * table, VLAN filter table, calls routine to set up link and flow control
156 * settings, and leaves transmit and receive units disabled and uninitialized
158 s32 ixgbe_start_hw_generic(struct ixgbe_hw *hw)
162 DEBUGFUNC("ixgbe_start_hw_generic");
164 /* Set the media type */
165 hw->phy.media_type = hw->mac.ops.get_media_type(hw);
167 /* PHY ops initialization must be done in reset_hw() */
169 /* Clear the VLAN filter table */
170 hw->mac.ops.clear_vfta(hw);
172 /* Clear statistics registers */
173 hw->mac.ops.clear_hw_cntrs(hw);
175 /* Set No Snoop Disable */
176 ctrl_ext = IXGBE_READ_REG(hw, IXGBE_CTRL_EXT);
177 ctrl_ext |= IXGBE_CTRL_EXT_NS_DIS;
178 IXGBE_WRITE_REG(hw, IXGBE_CTRL_EXT, ctrl_ext);
179 IXGBE_WRITE_FLUSH(hw);
181 /* Setup flow control */
182 ixgbe_setup_fc(hw, 0);
184 /* Clear adapter stopped flag */
185 hw->adapter_stopped = FALSE;
187 return IXGBE_SUCCESS;
191 * ixgbe_start_hw_gen2 - Init sequence for common device family
192 * @hw: pointer to hw structure
194 * Performs the init sequence common to the second generation
196 * Devices in the second generation:
200 s32 ixgbe_start_hw_gen2(struct ixgbe_hw *hw)
205 /* Clear the rate limiters */
206 for (i = 0; i < hw->mac.max_tx_queues; i++) {
207 IXGBE_WRITE_REG(hw, IXGBE_RTTDQSEL, i);
208 IXGBE_WRITE_REG(hw, IXGBE_RTTBCNRC, 0);
210 IXGBE_WRITE_FLUSH(hw);
212 /* Disable relaxed ordering */
213 for (i = 0; i < hw->mac.max_tx_queues; i++) {
214 regval = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL_82599(i));
215 regval &= ~IXGBE_DCA_TXCTRL_TX_WB_RO_EN;
216 IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL_82599(i), regval);
219 for (i = 0; i < hw->mac.max_rx_queues; i++) {
220 regval = IXGBE_READ_REG(hw, IXGBE_DCA_RXCTRL(i));
221 regval &= ~(IXGBE_DCA_RXCTRL_DESC_WRO_EN |
222 IXGBE_DCA_RXCTRL_DESC_HSRO_EN);
223 IXGBE_WRITE_REG(hw, IXGBE_DCA_RXCTRL(i), regval);
226 return IXGBE_SUCCESS;
230 * ixgbe_init_hw_generic - Generic hardware initialization
231 * @hw: pointer to hardware structure
233 * Initialize the hardware by resetting the hardware, filling the bus info
234 * structure and media type, clears all on chip counters, initializes receive
235 * address registers, multicast table, VLAN filter table, calls routine to set
236 * up link and flow control settings, and leaves transmit and receive units
237 * disabled and uninitialized
239 s32 ixgbe_init_hw_generic(struct ixgbe_hw *hw)
243 DEBUGFUNC("ixgbe_init_hw_generic");
245 /* Reset the hardware */
246 status = hw->mac.ops.reset_hw(hw);
248 if (status == IXGBE_SUCCESS) {
250 status = hw->mac.ops.start_hw(hw);
257 * ixgbe_clear_hw_cntrs_generic - Generic clear hardware counters
258 * @hw: pointer to hardware structure
260 * Clears all hardware statistics counters by reading them from the hardware
261 * Statistics counters are clear on read.
263 s32 ixgbe_clear_hw_cntrs_generic(struct ixgbe_hw *hw)
267 DEBUGFUNC("ixgbe_clear_hw_cntrs_generic");
269 IXGBE_READ_REG(hw, IXGBE_CRCERRS);
270 IXGBE_READ_REG(hw, IXGBE_ILLERRC);
271 IXGBE_READ_REG(hw, IXGBE_ERRBC);
272 IXGBE_READ_REG(hw, IXGBE_MSPDC);
273 for (i = 0; i < 8; i++)
274 IXGBE_READ_REG(hw, IXGBE_MPC(i));
276 IXGBE_READ_REG(hw, IXGBE_MLFC);
277 IXGBE_READ_REG(hw, IXGBE_MRFC);
278 IXGBE_READ_REG(hw, IXGBE_RLEC);
279 IXGBE_READ_REG(hw, IXGBE_LXONTXC);
280 IXGBE_READ_REG(hw, IXGBE_LXOFFTXC);
281 if (hw->mac.type >= ixgbe_mac_82599EB) {
282 IXGBE_READ_REG(hw, IXGBE_LXONRXCNT);
283 IXGBE_READ_REG(hw, IXGBE_LXOFFRXCNT);
285 IXGBE_READ_REG(hw, IXGBE_LXONRXC);
286 IXGBE_READ_REG(hw, IXGBE_LXOFFRXC);
289 for (i = 0; i < 8; i++) {
290 IXGBE_READ_REG(hw, IXGBE_PXONTXC(i));
291 IXGBE_READ_REG(hw, IXGBE_PXOFFTXC(i));
292 if (hw->mac.type >= ixgbe_mac_82599EB) {
293 IXGBE_READ_REG(hw, IXGBE_PXONRXCNT(i));
294 IXGBE_READ_REG(hw, IXGBE_PXOFFRXCNT(i));
296 IXGBE_READ_REG(hw, IXGBE_PXONRXC(i));
297 IXGBE_READ_REG(hw, IXGBE_PXOFFRXC(i));
300 if (hw->mac.type >= ixgbe_mac_82599EB)
301 for (i = 0; i < 8; i++)
302 IXGBE_READ_REG(hw, IXGBE_PXON2OFFCNT(i));
303 IXGBE_READ_REG(hw, IXGBE_PRC64);
304 IXGBE_READ_REG(hw, IXGBE_PRC127);
305 IXGBE_READ_REG(hw, IXGBE_PRC255);
306 IXGBE_READ_REG(hw, IXGBE_PRC511);
307 IXGBE_READ_REG(hw, IXGBE_PRC1023);
308 IXGBE_READ_REG(hw, IXGBE_PRC1522);
309 IXGBE_READ_REG(hw, IXGBE_GPRC);
310 IXGBE_READ_REG(hw, IXGBE_BPRC);
311 IXGBE_READ_REG(hw, IXGBE_MPRC);
312 IXGBE_READ_REG(hw, IXGBE_GPTC);
313 IXGBE_READ_REG(hw, IXGBE_GORCL);
314 IXGBE_READ_REG(hw, IXGBE_GORCH);
315 IXGBE_READ_REG(hw, IXGBE_GOTCL);
316 IXGBE_READ_REG(hw, IXGBE_GOTCH);
317 if (hw->mac.type == ixgbe_mac_82598EB)
318 for (i = 0; i < 8; i++)
319 IXGBE_READ_REG(hw, IXGBE_RNBC(i));
320 IXGBE_READ_REG(hw, IXGBE_RUC);
321 IXGBE_READ_REG(hw, IXGBE_RFC);
322 IXGBE_READ_REG(hw, IXGBE_ROC);
323 IXGBE_READ_REG(hw, IXGBE_RJC);
324 IXGBE_READ_REG(hw, IXGBE_MNGPRC);
325 IXGBE_READ_REG(hw, IXGBE_MNGPDC);
326 IXGBE_READ_REG(hw, IXGBE_MNGPTC);
327 IXGBE_READ_REG(hw, IXGBE_TORL);
328 IXGBE_READ_REG(hw, IXGBE_TORH);
329 IXGBE_READ_REG(hw, IXGBE_TPR);
330 IXGBE_READ_REG(hw, IXGBE_TPT);
331 IXGBE_READ_REG(hw, IXGBE_PTC64);
332 IXGBE_READ_REG(hw, IXGBE_PTC127);
333 IXGBE_READ_REG(hw, IXGBE_PTC255);
334 IXGBE_READ_REG(hw, IXGBE_PTC511);
335 IXGBE_READ_REG(hw, IXGBE_PTC1023);
336 IXGBE_READ_REG(hw, IXGBE_PTC1522);
337 IXGBE_READ_REG(hw, IXGBE_MPTC);
338 IXGBE_READ_REG(hw, IXGBE_BPTC);
339 for (i = 0; i < 16; i++) {
340 IXGBE_READ_REG(hw, IXGBE_QPRC(i));
341 IXGBE_READ_REG(hw, IXGBE_QPTC(i));
342 if (hw->mac.type >= ixgbe_mac_82599EB) {
343 IXGBE_READ_REG(hw, IXGBE_QBRC_L(i));
344 IXGBE_READ_REG(hw, IXGBE_QBRC_H(i));
345 IXGBE_READ_REG(hw, IXGBE_QBTC_L(i));
346 IXGBE_READ_REG(hw, IXGBE_QBTC_H(i));
347 IXGBE_READ_REG(hw, IXGBE_QPRDC(i));
349 IXGBE_READ_REG(hw, IXGBE_QBRC(i));
350 IXGBE_READ_REG(hw, IXGBE_QBTC(i));
354 if (hw->mac.type == ixgbe_mac_X540) {
356 ixgbe_identify_phy(hw);
357 hw->phy.ops.read_reg(hw, 0x3, IXGBE_PCRC8ECL, &i);
358 hw->phy.ops.read_reg(hw, 0x3, IXGBE_PCRC8ECH, &i);
359 hw->phy.ops.read_reg(hw, 0x3, IXGBE_LDPCECL, &i);
360 hw->phy.ops.read_reg(hw, 0x3, IXGBE_LDPCECH, &i);
363 return IXGBE_SUCCESS;
367 * ixgbe_read_pba_string_generic - Reads part number string from EEPROM
368 * @hw: pointer to hardware structure
369 * @pba_num: stores the part number string from the EEPROM
370 * @pba_num_size: part number string buffer length
372 * Reads the part number string from the EEPROM.
374 s32 ixgbe_read_pba_string_generic(struct ixgbe_hw *hw, u8 *pba_num,
383 DEBUGFUNC("ixgbe_read_pba_string_generic");
385 if (pba_num == NULL) {
386 DEBUGOUT("PBA string buffer was null\n");
387 return IXGBE_ERR_INVALID_ARGUMENT;
390 ret_val = hw->eeprom.ops.read(hw, IXGBE_PBANUM0_PTR, &data);
392 DEBUGOUT("NVM Read Error\n");
396 ret_val = hw->eeprom.ops.read(hw, IXGBE_PBANUM1_PTR, &pba_ptr);
398 DEBUGOUT("NVM Read Error\n");
403 * if data is not ptr guard the PBA must be in legacy format which
404 * means pba_ptr is actually our second data word for the PBA number
405 * and we can decode it into an ascii string
407 if (data != IXGBE_PBANUM_PTR_GUARD) {
408 DEBUGOUT("NVM PBA number is not stored as string\n");
410 /* we will need 11 characters to store the PBA */
411 if (pba_num_size < 11) {
412 DEBUGOUT("PBA string buffer too small\n");
413 return IXGBE_ERR_NO_SPACE;
416 /* extract hex string from data and pba_ptr */
417 pba_num[0] = (data >> 12) & 0xF;
418 pba_num[1] = (data >> 8) & 0xF;
419 pba_num[2] = (data >> 4) & 0xF;
420 pba_num[3] = data & 0xF;
421 pba_num[4] = (pba_ptr >> 12) & 0xF;
422 pba_num[5] = (pba_ptr >> 8) & 0xF;
425 pba_num[8] = (pba_ptr >> 4) & 0xF;
426 pba_num[9] = pba_ptr & 0xF;
428 /* put a null character on the end of our string */
431 /* switch all the data but the '-' to hex char */
432 for (offset = 0; offset < 10; offset++) {
433 if (pba_num[offset] < 0xA)
434 pba_num[offset] += '0';
435 else if (pba_num[offset] < 0x10)
436 pba_num[offset] += 'A' - 0xA;
439 return IXGBE_SUCCESS;
442 ret_val = hw->eeprom.ops.read(hw, pba_ptr, &length);
444 DEBUGOUT("NVM Read Error\n");
448 if (length == 0xFFFF || length == 0) {
449 DEBUGOUT("NVM PBA number section invalid length\n");
450 return IXGBE_ERR_PBA_SECTION;
453 /* check if pba_num buffer is big enough */
454 if (pba_num_size < (((u32)length * 2) - 1)) {
455 DEBUGOUT("PBA string buffer too small\n");
456 return IXGBE_ERR_NO_SPACE;
459 /* trim pba length from start of string */
463 for (offset = 0; offset < length; offset++) {
464 ret_val = hw->eeprom.ops.read(hw, pba_ptr + offset, &data);
466 DEBUGOUT("NVM Read Error\n");
469 pba_num[offset * 2] = (u8)(data >> 8);
470 pba_num[(offset * 2) + 1] = (u8)(data & 0xFF);
472 pba_num[offset * 2] = '\0';
474 return IXGBE_SUCCESS;
478 * ixgbe_read_pba_num_generic - Reads part number from EEPROM
479 * @hw: pointer to hardware structure
480 * @pba_num: stores the part number from the EEPROM
482 * Reads the part number from the EEPROM.
484 s32 ixgbe_read_pba_num_generic(struct ixgbe_hw *hw, u32 *pba_num)
489 DEBUGFUNC("ixgbe_read_pba_num_generic");
491 ret_val = hw->eeprom.ops.read(hw, IXGBE_PBANUM0_PTR, &data);
493 DEBUGOUT("NVM Read Error\n");
495 } else if (data == IXGBE_PBANUM_PTR_GUARD) {
496 DEBUGOUT("NVM Not supported\n");
497 return IXGBE_NOT_IMPLEMENTED;
499 *pba_num = (u32)(data << 16);
501 ret_val = hw->eeprom.ops.read(hw, IXGBE_PBANUM1_PTR, &data);
503 DEBUGOUT("NVM Read Error\n");
508 return IXGBE_SUCCESS;
512 * ixgbe_get_mac_addr_generic - Generic get MAC address
513 * @hw: pointer to hardware structure
514 * @mac_addr: Adapter MAC address
516 * Reads the adapter's MAC address from first Receive Address Register (RAR0)
517 * A reset of the adapter must be performed prior to calling this function
518 * in order for the MAC address to have been loaded from the EEPROM into RAR0
520 s32 ixgbe_get_mac_addr_generic(struct ixgbe_hw *hw, u8 *mac_addr)
526 DEBUGFUNC("ixgbe_get_mac_addr_generic");
528 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(0));
529 rar_low = IXGBE_READ_REG(hw, IXGBE_RAL(0));
531 for (i = 0; i < 4; i++)
532 mac_addr[i] = (u8)(rar_low >> (i*8));
534 for (i = 0; i < 2; i++)
535 mac_addr[i+4] = (u8)(rar_high >> (i*8));
537 return IXGBE_SUCCESS;
541 * ixgbe_get_bus_info_generic - Generic set PCI bus info
542 * @hw: pointer to hardware structure
544 * Sets the PCI bus info (speed, width, type) within the ixgbe_hw structure
546 s32 ixgbe_get_bus_info_generic(struct ixgbe_hw *hw)
548 struct ixgbe_mac_info *mac = &hw->mac;
551 DEBUGFUNC("ixgbe_get_bus_info_generic");
553 hw->bus.type = ixgbe_bus_type_pci_express;
555 /* Get the negotiated link width and speed from PCI config space */
556 link_status = IXGBE_READ_PCIE_WORD(hw, IXGBE_PCI_LINK_STATUS);
558 switch (link_status & IXGBE_PCI_LINK_WIDTH) {
559 case IXGBE_PCI_LINK_WIDTH_1:
560 hw->bus.width = ixgbe_bus_width_pcie_x1;
562 case IXGBE_PCI_LINK_WIDTH_2:
563 hw->bus.width = ixgbe_bus_width_pcie_x2;
565 case IXGBE_PCI_LINK_WIDTH_4:
566 hw->bus.width = ixgbe_bus_width_pcie_x4;
568 case IXGBE_PCI_LINK_WIDTH_8:
569 hw->bus.width = ixgbe_bus_width_pcie_x8;
572 hw->bus.width = ixgbe_bus_width_unknown;
576 switch (link_status & IXGBE_PCI_LINK_SPEED) {
577 case IXGBE_PCI_LINK_SPEED_2500:
578 hw->bus.speed = ixgbe_bus_speed_2500;
580 case IXGBE_PCI_LINK_SPEED_5000:
581 hw->bus.speed = ixgbe_bus_speed_5000;
584 hw->bus.speed = ixgbe_bus_speed_unknown;
588 mac->ops.set_lan_id(hw);
590 return IXGBE_SUCCESS;
594 * ixgbe_set_lan_id_multi_port_pcie - Set LAN id for PCIe multiple port devices
595 * @hw: pointer to the HW structure
597 * Determines the LAN function id by reading memory-mapped registers
598 * and swaps the port value if requested.
600 void ixgbe_set_lan_id_multi_port_pcie(struct ixgbe_hw *hw)
602 struct ixgbe_bus_info *bus = &hw->bus;
605 DEBUGFUNC("ixgbe_set_lan_id_multi_port_pcie");
607 reg = IXGBE_READ_REG(hw, IXGBE_STATUS);
608 bus->func = (reg & IXGBE_STATUS_LAN_ID) >> IXGBE_STATUS_LAN_ID_SHIFT;
609 bus->lan_id = bus->func;
611 /* check for a port swap */
612 reg = IXGBE_READ_REG(hw, IXGBE_FACTPS);
613 if (reg & IXGBE_FACTPS_LFS)
618 * ixgbe_stop_adapter_generic - Generic stop Tx/Rx units
619 * @hw: pointer to hardware structure
621 * Sets the adapter_stopped flag within ixgbe_hw struct. Clears interrupts,
622 * disables transmit and receive units. The adapter_stopped flag is used by
623 * the shared code and drivers to determine if the adapter is in a stopped
624 * state and should not touch the hardware.
626 s32 ixgbe_stop_adapter_generic(struct ixgbe_hw *hw)
631 DEBUGFUNC("ixgbe_stop_adapter_generic");
634 * Set the adapter_stopped flag so other driver functions stop touching
637 hw->adapter_stopped = TRUE;
639 /* Disable the receive unit */
640 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, 0);
642 /* Clear interrupt mask to stop interrupts from being generated */
643 IXGBE_WRITE_REG(hw, IXGBE_EIMC, IXGBE_IRQ_CLEAR_MASK);
645 /* Clear any pending interrupts, flush previous writes */
646 IXGBE_READ_REG(hw, IXGBE_EICR);
648 /* Disable the transmit unit. Each queue must be disabled. */
649 for (i = 0; i < hw->mac.max_tx_queues; i++)
650 IXGBE_WRITE_REG(hw, IXGBE_TXDCTL(i), IXGBE_TXDCTL_SWFLSH);
652 /* Disable the receive unit by stopping each queue */
653 for (i = 0; i < hw->mac.max_rx_queues; i++) {
654 reg_val = IXGBE_READ_REG(hw, IXGBE_RXDCTL(i));
655 reg_val &= ~IXGBE_RXDCTL_ENABLE;
656 reg_val |= IXGBE_RXDCTL_SWFLSH;
657 IXGBE_WRITE_REG(hw, IXGBE_RXDCTL(i), reg_val);
660 /* flush all queues disables */
661 IXGBE_WRITE_FLUSH(hw);
665 * Prevent the PCI-E bus from from hanging by disabling PCI-E master
666 * access and verify no pending requests
668 return ixgbe_disable_pcie_master(hw);
672 * ixgbe_led_on_generic - Turns on the software controllable LEDs.
673 * @hw: pointer to hardware structure
674 * @index: led number to turn on
676 s32 ixgbe_led_on_generic(struct ixgbe_hw *hw, u32 index)
678 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
680 DEBUGFUNC("ixgbe_led_on_generic");
682 /* To turn on the LED, set mode to ON. */
683 led_reg &= ~IXGBE_LED_MODE_MASK(index);
684 led_reg |= IXGBE_LED_ON << IXGBE_LED_MODE_SHIFT(index);
685 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
686 IXGBE_WRITE_FLUSH(hw);
688 return IXGBE_SUCCESS;
692 * ixgbe_led_off_generic - Turns off the software controllable LEDs.
693 * @hw: pointer to hardware structure
694 * @index: led number to turn off
696 s32 ixgbe_led_off_generic(struct ixgbe_hw *hw, u32 index)
698 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
700 DEBUGFUNC("ixgbe_led_off_generic");
702 /* To turn off the LED, set mode to OFF. */
703 led_reg &= ~IXGBE_LED_MODE_MASK(index);
704 led_reg |= IXGBE_LED_OFF << IXGBE_LED_MODE_SHIFT(index);
705 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
706 IXGBE_WRITE_FLUSH(hw);
708 return IXGBE_SUCCESS;
712 * ixgbe_init_eeprom_params_generic - Initialize EEPROM params
713 * @hw: pointer to hardware structure
715 * Initializes the EEPROM parameters ixgbe_eeprom_info within the
716 * ixgbe_hw struct in order to set up EEPROM access.
718 s32 ixgbe_init_eeprom_params_generic(struct ixgbe_hw *hw)
720 struct ixgbe_eeprom_info *eeprom = &hw->eeprom;
724 DEBUGFUNC("ixgbe_init_eeprom_params_generic");
726 if (eeprom->type == ixgbe_eeprom_uninitialized) {
727 eeprom->type = ixgbe_eeprom_none;
728 /* Set default semaphore delay to 10ms which is a well
730 eeprom->semaphore_delay = 10;
731 /* Clear EEPROM page size, it will be initialized as needed */
732 eeprom->word_page_size = 0;
735 * Check for EEPROM present first.
736 * If not present leave as none
738 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
739 if (eec & IXGBE_EEC_PRES) {
740 eeprom->type = ixgbe_eeprom_spi;
743 * SPI EEPROM is assumed here. This code would need to
744 * change if a future EEPROM is not SPI.
746 eeprom_size = (u16)((eec & IXGBE_EEC_SIZE) >>
747 IXGBE_EEC_SIZE_SHIFT);
748 eeprom->word_size = 1 << (eeprom_size +
749 IXGBE_EEPROM_WORD_SIZE_SHIFT);
752 if (eec & IXGBE_EEC_ADDR_SIZE)
753 eeprom->address_bits = 16;
755 eeprom->address_bits = 8;
756 DEBUGOUT3("Eeprom params: type = %d, size = %d, address bits: "
757 "%d\n", eeprom->type, eeprom->word_size,
758 eeprom->address_bits);
761 return IXGBE_SUCCESS;
765 * ixgbe_write_eeprom_buffer_bit_bang_generic - Write EEPROM using bit-bang
766 * @hw: pointer to hardware structure
767 * @offset: offset within the EEPROM to write
768 * @words: number of word(s)
769 * @data: 16 bit word(s) to write to EEPROM
771 * Reads 16 bit word(s) from EEPROM through bit-bang method
773 s32 ixgbe_write_eeprom_buffer_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
774 u16 words, u16 *data)
776 s32 status = IXGBE_SUCCESS;
779 DEBUGFUNC("ixgbe_write_eeprom_buffer_bit_bang_generic");
781 hw->eeprom.ops.init_params(hw);
784 status = IXGBE_ERR_INVALID_ARGUMENT;
788 if (offset + words > hw->eeprom.word_size) {
789 status = IXGBE_ERR_EEPROM;
794 * The EEPROM page size cannot be queried from the chip. We do lazy
795 * initialization. It is worth to do that when we write large buffer.
797 if ((hw->eeprom.word_page_size == 0) &&
798 (words > IXGBE_EEPROM_PAGE_SIZE_MAX))
799 ixgbe_detect_eeprom_page_size_generic(hw, offset);
802 * We cannot hold synchronization semaphores for too long
803 * to avoid other entity starvation. However it is more efficient
804 * to read in bursts than synchronizing access for each word.
806 for (i = 0; i < words; i += IXGBE_EEPROM_RD_BUFFER_MAX_COUNT) {
807 count = (words - i) / IXGBE_EEPROM_RD_BUFFER_MAX_COUNT > 0 ?
808 IXGBE_EEPROM_RD_BUFFER_MAX_COUNT : (words - i);
809 status = ixgbe_write_eeprom_buffer_bit_bang(hw, offset + i,
812 if (status != IXGBE_SUCCESS)
821 * ixgbe_write_eeprom_buffer_bit_bang - Writes 16 bit word(s) to EEPROM
822 * @hw: pointer to hardware structure
823 * @offset: offset within the EEPROM to be written to
824 * @words: number of word(s)
825 * @data: 16 bit word(s) to be written to the EEPROM
827 * If ixgbe_eeprom_update_checksum is not called after this function, the
828 * EEPROM will most likely contain an invalid checksum.
830 static s32 ixgbe_write_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset,
831 u16 words, u16 *data)
837 u8 write_opcode = IXGBE_EEPROM_WRITE_OPCODE_SPI;
839 DEBUGFUNC("ixgbe_write_eeprom_buffer_bit_bang");
841 /* Prepare the EEPROM for writing */
842 status = ixgbe_acquire_eeprom(hw);
844 if (status == IXGBE_SUCCESS) {
845 if (ixgbe_ready_eeprom(hw) != IXGBE_SUCCESS) {
846 ixgbe_release_eeprom(hw);
847 status = IXGBE_ERR_EEPROM;
851 if (status == IXGBE_SUCCESS) {
852 for (i = 0; i < words; i++) {
853 ixgbe_standby_eeprom(hw);
855 /* Send the WRITE ENABLE command (8 bit opcode ) */
856 ixgbe_shift_out_eeprom_bits(hw,
857 IXGBE_EEPROM_WREN_OPCODE_SPI,
858 IXGBE_EEPROM_OPCODE_BITS);
860 ixgbe_standby_eeprom(hw);
863 * Some SPI eeproms use the 8th address bit embedded
866 if ((hw->eeprom.address_bits == 8) &&
867 ((offset + i) >= 128))
868 write_opcode |= IXGBE_EEPROM_A8_OPCODE_SPI;
870 /* Send the Write command (8-bit opcode + addr) */
871 ixgbe_shift_out_eeprom_bits(hw, write_opcode,
872 IXGBE_EEPROM_OPCODE_BITS);
873 ixgbe_shift_out_eeprom_bits(hw, (u16)((offset + i) * 2),
874 hw->eeprom.address_bits);
876 page_size = hw->eeprom.word_page_size;
878 /* Send the data in burst via SPI*/
881 word = (word >> 8) | (word << 8);
882 ixgbe_shift_out_eeprom_bits(hw, word, 16);
887 /* do not wrap around page */
888 if (((offset + i) & (page_size - 1)) ==
891 } while (++i < words);
893 ixgbe_standby_eeprom(hw);
896 /* Done with writing - release the EEPROM */
897 ixgbe_release_eeprom(hw);
904 * ixgbe_write_eeprom_generic - Writes 16 bit value to EEPROM
905 * @hw: pointer to hardware structure
906 * @offset: offset within the EEPROM to be written to
907 * @data: 16 bit word to be written to the EEPROM
909 * If ixgbe_eeprom_update_checksum is not called after this function, the
910 * EEPROM will most likely contain an invalid checksum.
912 s32 ixgbe_write_eeprom_generic(struct ixgbe_hw *hw, u16 offset, u16 data)
916 DEBUGFUNC("ixgbe_write_eeprom_generic");
918 hw->eeprom.ops.init_params(hw);
920 if (offset >= hw->eeprom.word_size) {
921 status = IXGBE_ERR_EEPROM;
925 status = ixgbe_write_eeprom_buffer_bit_bang(hw, offset, 1, &data);
932 * ixgbe_read_eeprom_buffer_bit_bang_generic - Read EEPROM using bit-bang
933 * @hw: pointer to hardware structure
934 * @offset: offset within the EEPROM to be read
935 * @data: read 16 bit words(s) from EEPROM
936 * @words: number of word(s)
938 * Reads 16 bit word(s) from EEPROM through bit-bang method
940 s32 ixgbe_read_eeprom_buffer_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
941 u16 words, u16 *data)
943 s32 status = IXGBE_SUCCESS;
946 DEBUGFUNC("ixgbe_read_eeprom_buffer_bit_bang_generic");
948 hw->eeprom.ops.init_params(hw);
951 status = IXGBE_ERR_INVALID_ARGUMENT;
955 if (offset + words > hw->eeprom.word_size) {
956 status = IXGBE_ERR_EEPROM;
961 * We cannot hold synchronization semaphores for too long
962 * to avoid other entity starvation. However it is more efficient
963 * to read in bursts than synchronizing access for each word.
965 for (i = 0; i < words; i += IXGBE_EEPROM_RD_BUFFER_MAX_COUNT) {
966 count = (words - i) / IXGBE_EEPROM_RD_BUFFER_MAX_COUNT > 0 ?
967 IXGBE_EEPROM_RD_BUFFER_MAX_COUNT : (words - i);
969 status = ixgbe_read_eeprom_buffer_bit_bang(hw, offset + i,
972 if (status != IXGBE_SUCCESS)
981 * ixgbe_read_eeprom_buffer_bit_bang - Read EEPROM using bit-bang
982 * @hw: pointer to hardware structure
983 * @offset: offset within the EEPROM to be read
984 * @words: number of word(s)
985 * @data: read 16 bit word(s) from EEPROM
987 * Reads 16 bit word(s) from EEPROM through bit-bang method
989 static s32 ixgbe_read_eeprom_buffer_bit_bang(struct ixgbe_hw *hw, u16 offset,
990 u16 words, u16 *data)
994 u8 read_opcode = IXGBE_EEPROM_READ_OPCODE_SPI;
997 DEBUGFUNC("ixgbe_read_eeprom_buffer_bit_bang");
999 /* Prepare the EEPROM for reading */
1000 status = ixgbe_acquire_eeprom(hw);
1002 if (status == IXGBE_SUCCESS) {
1003 if (ixgbe_ready_eeprom(hw) != IXGBE_SUCCESS) {
1004 ixgbe_release_eeprom(hw);
1005 status = IXGBE_ERR_EEPROM;
1009 if (status == IXGBE_SUCCESS) {
1010 for (i = 0; i < words; i++) {
1011 ixgbe_standby_eeprom(hw);
1013 * Some SPI eeproms use the 8th address bit embedded
1016 if ((hw->eeprom.address_bits == 8) &&
1017 ((offset + i) >= 128))
1018 read_opcode |= IXGBE_EEPROM_A8_OPCODE_SPI;
1020 /* Send the READ command (opcode + addr) */
1021 ixgbe_shift_out_eeprom_bits(hw, read_opcode,
1022 IXGBE_EEPROM_OPCODE_BITS);
1023 ixgbe_shift_out_eeprom_bits(hw, (u16)((offset + i) * 2),
1024 hw->eeprom.address_bits);
1026 /* Read the data. */
1027 word_in = ixgbe_shift_in_eeprom_bits(hw, 16);
1028 data[i] = (word_in >> 8) | (word_in << 8);
1031 /* End this read operation */
1032 ixgbe_release_eeprom(hw);
1039 * ixgbe_read_eeprom_bit_bang_generic - Read EEPROM word using bit-bang
1040 * @hw: pointer to hardware structure
1041 * @offset: offset within the EEPROM to be read
1042 * @data: read 16 bit value from EEPROM
1044 * Reads 16 bit value from EEPROM through bit-bang method
1046 s32 ixgbe_read_eeprom_bit_bang_generic(struct ixgbe_hw *hw, u16 offset,
1051 DEBUGFUNC("ixgbe_read_eeprom_bit_bang_generic");
1053 hw->eeprom.ops.init_params(hw);
1055 if (offset >= hw->eeprom.word_size) {
1056 status = IXGBE_ERR_EEPROM;
1060 status = ixgbe_read_eeprom_buffer_bit_bang(hw, offset, 1, data);
1067 * ixgbe_read_eerd_buffer_generic - Read EEPROM word(s) using EERD
1068 * @hw: pointer to hardware structure
1069 * @offset: offset of word in the EEPROM to read
1070 * @words: number of word(s)
1071 * @data: 16 bit word(s) from the EEPROM
1073 * Reads a 16 bit word(s) from the EEPROM using the EERD register.
1075 s32 ixgbe_read_eerd_buffer_generic(struct ixgbe_hw *hw, u16 offset,
1076 u16 words, u16 *data)
1079 s32 status = IXGBE_SUCCESS;
1082 DEBUGFUNC("ixgbe_read_eerd_buffer_generic");
1084 hw->eeprom.ops.init_params(hw);
1087 status = IXGBE_ERR_INVALID_ARGUMENT;
1091 if (offset >= hw->eeprom.word_size) {
1092 status = IXGBE_ERR_EEPROM;
1096 for (i = 0; i < words; i++) {
1097 eerd = ((offset + i) << IXGBE_EEPROM_RW_ADDR_SHIFT) +
1098 IXGBE_EEPROM_RW_REG_START;
1100 IXGBE_WRITE_REG(hw, IXGBE_EERD, eerd);
1101 status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_READ);
1103 if (status == IXGBE_SUCCESS) {
1104 data[i] = (IXGBE_READ_REG(hw, IXGBE_EERD) >>
1105 IXGBE_EEPROM_RW_REG_DATA);
1107 DEBUGOUT("Eeprom read timed out\n");
1116 * ixgbe_detect_eeprom_page_size_generic - Detect EEPROM page size
1117 * @hw: pointer to hardware structure
1118 * @offset: offset within the EEPROM to be used as a scratch pad
1120 * Discover EEPROM page size by writing marching data at given offset.
1121 * This function is called only when we are writing a new large buffer
1122 * at given offset so the data would be overwritten anyway.
1124 static s32 ixgbe_detect_eeprom_page_size_generic(struct ixgbe_hw *hw,
1127 u16 data[IXGBE_EEPROM_PAGE_SIZE_MAX];
1128 s32 status = IXGBE_SUCCESS;
1131 DEBUGFUNC("ixgbe_detect_eeprom_page_size_generic");
1133 for (i = 0; i < IXGBE_EEPROM_PAGE_SIZE_MAX; i++)
1136 hw->eeprom.word_page_size = IXGBE_EEPROM_PAGE_SIZE_MAX;
1137 status = ixgbe_write_eeprom_buffer_bit_bang(hw, offset,
1138 IXGBE_EEPROM_PAGE_SIZE_MAX, data);
1139 hw->eeprom.word_page_size = 0;
1140 if (status != IXGBE_SUCCESS)
1143 status = ixgbe_read_eeprom_buffer_bit_bang(hw, offset, 1, data);
1144 if (status != IXGBE_SUCCESS)
1148 * When writing in burst more than the actual page size
1149 * EEPROM address wraps around current page.
1151 hw->eeprom.word_page_size = IXGBE_EEPROM_PAGE_SIZE_MAX - data[0];
1153 DEBUGOUT1("Detected EEPROM page size = %d words.",
1154 hw->eeprom.word_page_size);
1160 * ixgbe_read_eerd_generic - Read EEPROM word using EERD
1161 * @hw: pointer to hardware structure
1162 * @offset: offset of word in the EEPROM to read
1163 * @data: word read from the EEPROM
1165 * Reads a 16 bit word from the EEPROM using the EERD register.
1167 s32 ixgbe_read_eerd_generic(struct ixgbe_hw *hw, u16 offset, u16 *data)
1169 return ixgbe_read_eerd_buffer_generic(hw, offset, 1, data);
1173 * ixgbe_write_eewr_buffer_generic - Write EEPROM word(s) using EEWR
1174 * @hw: pointer to hardware structure
1175 * @offset: offset of word in the EEPROM to write
1176 * @words: number of word(s)
1177 * @data: word(s) write to the EEPROM
1179 * Write a 16 bit word(s) to the EEPROM using the EEWR register.
1181 s32 ixgbe_write_eewr_buffer_generic(struct ixgbe_hw *hw, u16 offset,
1182 u16 words, u16 *data)
1185 s32 status = IXGBE_SUCCESS;
1188 DEBUGFUNC("ixgbe_write_eewr_generic");
1190 hw->eeprom.ops.init_params(hw);
1193 status = IXGBE_ERR_INVALID_ARGUMENT;
1197 if (offset >= hw->eeprom.word_size) {
1198 status = IXGBE_ERR_EEPROM;
1202 for (i = 0; i < words; i++) {
1203 eewr = ((offset + i) << IXGBE_EEPROM_RW_ADDR_SHIFT) |
1204 (data[i] << IXGBE_EEPROM_RW_REG_DATA) |
1205 IXGBE_EEPROM_RW_REG_START;
1207 status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_WRITE);
1208 if (status != IXGBE_SUCCESS) {
1209 DEBUGOUT("Eeprom write EEWR timed out\n");
1213 IXGBE_WRITE_REG(hw, IXGBE_EEWR, eewr);
1215 status = ixgbe_poll_eerd_eewr_done(hw, IXGBE_NVM_POLL_WRITE);
1216 if (status != IXGBE_SUCCESS) {
1217 DEBUGOUT("Eeprom write EEWR timed out\n");
1227 * ixgbe_write_eewr_generic - Write EEPROM word using EEWR
1228 * @hw: pointer to hardware structure
1229 * @offset: offset of word in the EEPROM to write
1230 * @data: word write to the EEPROM
1232 * Write a 16 bit word to the EEPROM using the EEWR register.
1234 s32 ixgbe_write_eewr_generic(struct ixgbe_hw *hw, u16 offset, u16 data)
1236 return ixgbe_write_eewr_buffer_generic(hw, offset, 1, &data);
1240 * ixgbe_poll_eerd_eewr_done - Poll EERD read or EEWR write status
1241 * @hw: pointer to hardware structure
1242 * @ee_reg: EEPROM flag for polling
1244 * Polls the status bit (bit 1) of the EERD or EEWR to determine when the
1245 * read or write is done respectively.
1247 s32 ixgbe_poll_eerd_eewr_done(struct ixgbe_hw *hw, u32 ee_reg)
1251 s32 status = IXGBE_ERR_EEPROM;
1253 DEBUGFUNC("ixgbe_poll_eerd_eewr_done");
1255 for (i = 0; i < IXGBE_EERD_EEWR_ATTEMPTS; i++) {
1256 if (ee_reg == IXGBE_NVM_POLL_READ)
1257 reg = IXGBE_READ_REG(hw, IXGBE_EERD);
1259 reg = IXGBE_READ_REG(hw, IXGBE_EEWR);
1261 if (reg & IXGBE_EEPROM_RW_REG_DONE) {
1262 status = IXGBE_SUCCESS;
1271 * ixgbe_acquire_eeprom - Acquire EEPROM using bit-bang
1272 * @hw: pointer to hardware structure
1274 * Prepares EEPROM for access using bit-bang method. This function should
1275 * be called before issuing a command to the EEPROM.
1277 static s32 ixgbe_acquire_eeprom(struct ixgbe_hw *hw)
1279 s32 status = IXGBE_SUCCESS;
1283 DEBUGFUNC("ixgbe_acquire_eeprom");
1285 if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM)
1287 status = IXGBE_ERR_SWFW_SYNC;
1289 if (status == IXGBE_SUCCESS) {
1290 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1292 /* Request EEPROM Access */
1293 eec |= IXGBE_EEC_REQ;
1294 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1296 for (i = 0; i < IXGBE_EEPROM_GRANT_ATTEMPTS; i++) {
1297 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1298 if (eec & IXGBE_EEC_GNT)
1303 /* Release if grant not acquired */
1304 if (!(eec & IXGBE_EEC_GNT)) {
1305 eec &= ~IXGBE_EEC_REQ;
1306 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1307 DEBUGOUT("Could not acquire EEPROM grant\n");
1309 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
1310 status = IXGBE_ERR_EEPROM;
1313 /* Setup EEPROM for Read/Write */
1314 if (status == IXGBE_SUCCESS) {
1315 /* Clear CS and SK */
1316 eec &= ~(IXGBE_EEC_CS | IXGBE_EEC_SK);
1317 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1318 IXGBE_WRITE_FLUSH(hw);
1326 * ixgbe_get_eeprom_semaphore - Get hardware semaphore
1327 * @hw: pointer to hardware structure
1329 * Sets the hardware semaphores so EEPROM access can occur for bit-bang method
1331 static s32 ixgbe_get_eeprom_semaphore(struct ixgbe_hw *hw)
1333 s32 status = IXGBE_ERR_EEPROM;
1338 DEBUGFUNC("ixgbe_get_eeprom_semaphore");
1341 /* Get SMBI software semaphore between device drivers first */
1342 for (i = 0; i < timeout; i++) {
1344 * If the SMBI bit is 0 when we read it, then the bit will be
1345 * set and we have the semaphore
1347 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
1348 if (!(swsm & IXGBE_SWSM_SMBI)) {
1349 status = IXGBE_SUCCESS;
1356 DEBUGOUT("Driver can't access the Eeprom - SMBI Semaphore "
1359 * this release is particularly important because our attempts
1360 * above to get the semaphore may have succeeded, and if there
1361 * was a timeout, we should unconditionally clear the semaphore
1362 * bits to free the driver to make progress
1364 ixgbe_release_eeprom_semaphore(hw);
1369 * If the SMBI bit is 0 when we read it, then the bit will be
1370 * set and we have the semaphore
1372 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
1373 if (!(swsm & IXGBE_SWSM_SMBI))
1374 status = IXGBE_SUCCESS;
1377 /* Now get the semaphore between SW/FW through the SWESMBI bit */
1378 if (status == IXGBE_SUCCESS) {
1379 for (i = 0; i < timeout; i++) {
1380 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
1382 /* Set the SW EEPROM semaphore bit to request access */
1383 swsm |= IXGBE_SWSM_SWESMBI;
1384 IXGBE_WRITE_REG(hw, IXGBE_SWSM, swsm);
1387 * If we set the bit successfully then we got the
1390 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
1391 if (swsm & IXGBE_SWSM_SWESMBI)
1398 * Release semaphores and return error if SW EEPROM semaphore
1399 * was not granted because we don't have access to the EEPROM
1402 DEBUGOUT("SWESMBI Software EEPROM semaphore "
1404 ixgbe_release_eeprom_semaphore(hw);
1405 status = IXGBE_ERR_EEPROM;
1408 DEBUGOUT("Software semaphore SMBI between device drivers "
1416 * ixgbe_release_eeprom_semaphore - Release hardware semaphore
1417 * @hw: pointer to hardware structure
1419 * This function clears hardware semaphore bits.
1421 static void ixgbe_release_eeprom_semaphore(struct ixgbe_hw *hw)
1425 DEBUGFUNC("ixgbe_release_eeprom_semaphore");
1427 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
1429 /* Release both semaphores by writing 0 to the bits SWESMBI and SMBI */
1430 swsm &= ~(IXGBE_SWSM_SWESMBI | IXGBE_SWSM_SMBI);
1431 IXGBE_WRITE_REG(hw, IXGBE_SWSM, swsm);
1432 IXGBE_WRITE_FLUSH(hw);
1436 * ixgbe_ready_eeprom - Polls for EEPROM ready
1437 * @hw: pointer to hardware structure
1439 static s32 ixgbe_ready_eeprom(struct ixgbe_hw *hw)
1441 s32 status = IXGBE_SUCCESS;
1445 DEBUGFUNC("ixgbe_ready_eeprom");
1448 * Read "Status Register" repeatedly until the LSB is cleared. The
1449 * EEPROM will signal that the command has been completed by clearing
1450 * bit 0 of the internal status register. If it's not cleared within
1451 * 5 milliseconds, then error out.
1453 for (i = 0; i < IXGBE_EEPROM_MAX_RETRY_SPI; i += 5) {
1454 ixgbe_shift_out_eeprom_bits(hw, IXGBE_EEPROM_RDSR_OPCODE_SPI,
1455 IXGBE_EEPROM_OPCODE_BITS);
1456 spi_stat_reg = (u8)ixgbe_shift_in_eeprom_bits(hw, 8);
1457 if (!(spi_stat_reg & IXGBE_EEPROM_STATUS_RDY_SPI))
1461 ixgbe_standby_eeprom(hw);
1465 * On some parts, SPI write time could vary from 0-20mSec on 3.3V
1466 * devices (and only 0-5mSec on 5V devices)
1468 if (i >= IXGBE_EEPROM_MAX_RETRY_SPI) {
1469 DEBUGOUT("SPI EEPROM Status error\n");
1470 status = IXGBE_ERR_EEPROM;
1477 * ixgbe_standby_eeprom - Returns EEPROM to a "standby" state
1478 * @hw: pointer to hardware structure
1480 static void ixgbe_standby_eeprom(struct ixgbe_hw *hw)
1484 DEBUGFUNC("ixgbe_standby_eeprom");
1486 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1488 /* Toggle CS to flush commands */
1489 eec |= IXGBE_EEC_CS;
1490 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1491 IXGBE_WRITE_FLUSH(hw);
1493 eec &= ~IXGBE_EEC_CS;
1494 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1495 IXGBE_WRITE_FLUSH(hw);
1500 * ixgbe_shift_out_eeprom_bits - Shift data bits out to the EEPROM.
1501 * @hw: pointer to hardware structure
1502 * @data: data to send to the EEPROM
1503 * @count: number of bits to shift out
1505 static void ixgbe_shift_out_eeprom_bits(struct ixgbe_hw *hw, u16 data,
1512 DEBUGFUNC("ixgbe_shift_out_eeprom_bits");
1514 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1517 * Mask is used to shift "count" bits of "data" out to the EEPROM
1518 * one bit at a time. Determine the starting bit based on count
1520 mask = 0x01 << (count - 1);
1522 for (i = 0; i < count; i++) {
1524 * A "1" is shifted out to the EEPROM by setting bit "DI" to a
1525 * "1", and then raising and then lowering the clock (the SK
1526 * bit controls the clock input to the EEPROM). A "0" is
1527 * shifted out to the EEPROM by setting "DI" to "0" and then
1528 * raising and then lowering the clock.
1531 eec |= IXGBE_EEC_DI;
1533 eec &= ~IXGBE_EEC_DI;
1535 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1536 IXGBE_WRITE_FLUSH(hw);
1540 ixgbe_raise_eeprom_clk(hw, &eec);
1541 ixgbe_lower_eeprom_clk(hw, &eec);
1544 * Shift mask to signify next bit of data to shift in to the
1550 /* We leave the "DI" bit set to "0" when we leave this routine. */
1551 eec &= ~IXGBE_EEC_DI;
1552 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1553 IXGBE_WRITE_FLUSH(hw);
1557 * ixgbe_shift_in_eeprom_bits - Shift data bits in from the EEPROM
1558 * @hw: pointer to hardware structure
1560 static u16 ixgbe_shift_in_eeprom_bits(struct ixgbe_hw *hw, u16 count)
1566 DEBUGFUNC("ixgbe_shift_in_eeprom_bits");
1569 * In order to read a register from the EEPROM, we need to shift
1570 * 'count' bits in from the EEPROM. Bits are "shifted in" by raising
1571 * the clock input to the EEPROM (setting the SK bit), and then reading
1572 * the value of the "DO" bit. During this "shifting in" process the
1573 * "DI" bit should always be clear.
1575 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1577 eec &= ~(IXGBE_EEC_DO | IXGBE_EEC_DI);
1579 for (i = 0; i < count; i++) {
1581 ixgbe_raise_eeprom_clk(hw, &eec);
1583 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1585 eec &= ~(IXGBE_EEC_DI);
1586 if (eec & IXGBE_EEC_DO)
1589 ixgbe_lower_eeprom_clk(hw, &eec);
1596 * ixgbe_raise_eeprom_clk - Raises the EEPROM's clock input.
1597 * @hw: pointer to hardware structure
1598 * @eec: EEC register's current value
1600 static void ixgbe_raise_eeprom_clk(struct ixgbe_hw *hw, u32 *eec)
1602 DEBUGFUNC("ixgbe_raise_eeprom_clk");
1605 * Raise the clock input to the EEPROM
1606 * (setting the SK bit), then delay
1608 *eec = *eec | IXGBE_EEC_SK;
1609 IXGBE_WRITE_REG(hw, IXGBE_EEC, *eec);
1610 IXGBE_WRITE_FLUSH(hw);
1615 * ixgbe_lower_eeprom_clk - Lowers the EEPROM's clock input.
1616 * @hw: pointer to hardware structure
1617 * @eecd: EECD's current value
1619 static void ixgbe_lower_eeprom_clk(struct ixgbe_hw *hw, u32 *eec)
1621 DEBUGFUNC("ixgbe_lower_eeprom_clk");
1624 * Lower the clock input to the EEPROM (clearing the SK bit), then
1627 *eec = *eec & ~IXGBE_EEC_SK;
1628 IXGBE_WRITE_REG(hw, IXGBE_EEC, *eec);
1629 IXGBE_WRITE_FLUSH(hw);
1634 * ixgbe_release_eeprom - Release EEPROM, release semaphores
1635 * @hw: pointer to hardware structure
1637 static void ixgbe_release_eeprom(struct ixgbe_hw *hw)
1641 DEBUGFUNC("ixgbe_release_eeprom");
1643 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
1645 eec |= IXGBE_EEC_CS; /* Pull CS high */
1646 eec &= ~IXGBE_EEC_SK; /* Lower SCK */
1648 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1649 IXGBE_WRITE_FLUSH(hw);
1653 /* Stop requesting EEPROM access */
1654 eec &= ~IXGBE_EEC_REQ;
1655 IXGBE_WRITE_REG(hw, IXGBE_EEC, eec);
1657 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
1659 /* Delay before attempt to obtain semaphore again to allow FW access */
1660 msec_delay(hw->eeprom.semaphore_delay);
1664 * ixgbe_calc_eeprom_checksum_generic - Calculates and returns the checksum
1665 * @hw: pointer to hardware structure
1667 u16 ixgbe_calc_eeprom_checksum_generic(struct ixgbe_hw *hw)
1676 DEBUGFUNC("ixgbe_calc_eeprom_checksum_generic");
1678 /* Include 0x0-0x3F in the checksum */
1679 for (i = 0; i < IXGBE_EEPROM_CHECKSUM; i++) {
1680 if (hw->eeprom.ops.read(hw, i, &word) != IXGBE_SUCCESS) {
1681 DEBUGOUT("EEPROM read failed\n");
1687 /* Include all data from pointers except for the fw pointer */
1688 for (i = IXGBE_PCIE_ANALOG_PTR; i < IXGBE_FW_PTR; i++) {
1689 hw->eeprom.ops.read(hw, i, &pointer);
1691 /* Make sure the pointer seems valid */
1692 if (pointer != 0xFFFF && pointer != 0) {
1693 hw->eeprom.ops.read(hw, pointer, &length);
1695 if (length != 0xFFFF && length != 0) {
1696 for (j = pointer+1; j <= pointer+length; j++) {
1697 hw->eeprom.ops.read(hw, j, &word);
1704 checksum = (u16)IXGBE_EEPROM_SUM - checksum;
1710 * ixgbe_validate_eeprom_checksum_generic - Validate EEPROM checksum
1711 * @hw: pointer to hardware structure
1712 * @checksum_val: calculated checksum
1714 * Performs checksum calculation and validates the EEPROM checksum. If the
1715 * caller does not need checksum_val, the value can be NULL.
1717 s32 ixgbe_validate_eeprom_checksum_generic(struct ixgbe_hw *hw,
1722 u16 read_checksum = 0;
1724 DEBUGFUNC("ixgbe_validate_eeprom_checksum_generic");
1727 * Read the first word from the EEPROM. If this times out or fails, do
1728 * not continue or we could be in for a very long wait while every
1731 status = hw->eeprom.ops.read(hw, 0, &checksum);
1733 if (status == IXGBE_SUCCESS) {
1734 checksum = hw->eeprom.ops.calc_checksum(hw);
1736 hw->eeprom.ops.read(hw, IXGBE_EEPROM_CHECKSUM, &read_checksum);
1739 * Verify read checksum from EEPROM is the same as
1740 * calculated checksum
1742 if (read_checksum != checksum)
1743 status = IXGBE_ERR_EEPROM_CHECKSUM;
1745 /* If the user cares, return the calculated checksum */
1747 *checksum_val = checksum;
1749 DEBUGOUT("EEPROM read failed\n");
1756 * ixgbe_update_eeprom_checksum_generic - Updates the EEPROM checksum
1757 * @hw: pointer to hardware structure
1759 s32 ixgbe_update_eeprom_checksum_generic(struct ixgbe_hw *hw)
1764 DEBUGFUNC("ixgbe_update_eeprom_checksum_generic");
1767 * Read the first word from the EEPROM. If this times out or fails, do
1768 * not continue or we could be in for a very long wait while every
1771 status = hw->eeprom.ops.read(hw, 0, &checksum);
1773 if (status == IXGBE_SUCCESS) {
1774 checksum = hw->eeprom.ops.calc_checksum(hw);
1775 status = hw->eeprom.ops.write(hw, IXGBE_EEPROM_CHECKSUM,
1778 DEBUGOUT("EEPROM read failed\n");
1785 * ixgbe_validate_mac_addr - Validate MAC address
1786 * @mac_addr: pointer to MAC address.
1788 * Tests a MAC address to ensure it is a valid Individual Address
1790 s32 ixgbe_validate_mac_addr(u8 *mac_addr)
1792 s32 status = IXGBE_SUCCESS;
1794 DEBUGFUNC("ixgbe_validate_mac_addr");
1796 /* Make sure it is not a multicast address */
1797 if (IXGBE_IS_MULTICAST(mac_addr)) {
1798 DEBUGOUT("MAC address is multicast\n");
1799 status = IXGBE_ERR_INVALID_MAC_ADDR;
1800 /* Not a broadcast address */
1801 } else if (IXGBE_IS_BROADCAST(mac_addr)) {
1802 DEBUGOUT("MAC address is broadcast\n");
1803 status = IXGBE_ERR_INVALID_MAC_ADDR;
1804 /* Reject the zero address */
1805 } else if (mac_addr[0] == 0 && mac_addr[1] == 0 && mac_addr[2] == 0 &&
1806 mac_addr[3] == 0 && mac_addr[4] == 0 && mac_addr[5] == 0) {
1807 DEBUGOUT("MAC address is all zeros\n");
1808 status = IXGBE_ERR_INVALID_MAC_ADDR;
1814 * ixgbe_set_rar_generic - Set Rx address register
1815 * @hw: pointer to hardware structure
1816 * @index: Receive address register to write
1817 * @addr: Address to put into receive address register
1818 * @vmdq: VMDq "set" or "pool" index
1819 * @enable_addr: set flag that address is active
1821 * Puts an ethernet address into a receive address register.
1823 s32 ixgbe_set_rar_generic(struct ixgbe_hw *hw, u32 index, u8 *addr, u32 vmdq,
1826 u32 rar_low, rar_high;
1827 u32 rar_entries = hw->mac.num_rar_entries;
1829 DEBUGFUNC("ixgbe_set_rar_generic");
1831 /* Make sure we are using a valid rar index range */
1832 if (index >= rar_entries) {
1833 DEBUGOUT1("RAR index %d is out of range.\n", index);
1834 return IXGBE_ERR_INVALID_ARGUMENT;
1837 /* setup VMDq pool selection before this RAR gets enabled */
1838 hw->mac.ops.set_vmdq(hw, index, vmdq);
1841 * HW expects these in little endian so we reverse the byte
1842 * order from network order (big endian) to little endian
1844 rar_low = ((u32)addr[0] |
1845 ((u32)addr[1] << 8) |
1846 ((u32)addr[2] << 16) |
1847 ((u32)addr[3] << 24));
1849 * Some parts put the VMDq setting in the extra RAH bits,
1850 * so save everything except the lower 16 bits that hold part
1851 * of the address and the address valid bit.
1853 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(index));
1854 rar_high &= ~(0x0000FFFF | IXGBE_RAH_AV);
1855 rar_high |= ((u32)addr[4] | ((u32)addr[5] << 8));
1857 if (enable_addr != 0)
1858 rar_high |= IXGBE_RAH_AV;
1860 IXGBE_WRITE_REG(hw, IXGBE_RAL(index), rar_low);
1861 IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high);
1863 return IXGBE_SUCCESS;
1867 * ixgbe_clear_rar_generic - Remove Rx address register
1868 * @hw: pointer to hardware structure
1869 * @index: Receive address register to write
1871 * Clears an ethernet address from a receive address register.
1873 s32 ixgbe_clear_rar_generic(struct ixgbe_hw *hw, u32 index)
1876 u32 rar_entries = hw->mac.num_rar_entries;
1878 DEBUGFUNC("ixgbe_clear_rar_generic");
1880 /* Make sure we are using a valid rar index range */
1881 if (index >= rar_entries) {
1882 DEBUGOUT1("RAR index %d is out of range.\n", index);
1883 return IXGBE_ERR_INVALID_ARGUMENT;
1887 * Some parts put the VMDq setting in the extra RAH bits,
1888 * so save everything except the lower 16 bits that hold part
1889 * of the address and the address valid bit.
1891 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(index));
1892 rar_high &= ~(0x0000FFFF | IXGBE_RAH_AV);
1894 IXGBE_WRITE_REG(hw, IXGBE_RAL(index), 0);
1895 IXGBE_WRITE_REG(hw, IXGBE_RAH(index), rar_high);
1897 /* clear VMDq pool/queue selection for this RAR */
1898 hw->mac.ops.clear_vmdq(hw, index, IXGBE_CLEAR_VMDQ_ALL);
1900 return IXGBE_SUCCESS;
1904 * ixgbe_init_rx_addrs_generic - Initializes receive address filters.
1905 * @hw: pointer to hardware structure
1907 * Places the MAC address in receive address register 0 and clears the rest
1908 * of the receive address registers. Clears the multicast table. Assumes
1909 * the receiver is in reset when the routine is called.
1911 s32 ixgbe_init_rx_addrs_generic(struct ixgbe_hw *hw)
1914 u32 rar_entries = hw->mac.num_rar_entries;
1916 DEBUGFUNC("ixgbe_init_rx_addrs_generic");
1919 * If the current mac address is valid, assume it is a software override
1920 * to the permanent address.
1921 * Otherwise, use the permanent address from the eeprom.
1923 if (ixgbe_validate_mac_addr(hw->mac.addr) ==
1924 IXGBE_ERR_INVALID_MAC_ADDR) {
1925 /* Get the MAC address from the RAR0 for later reference */
1926 hw->mac.ops.get_mac_addr(hw, hw->mac.addr);
1928 DEBUGOUT3(" Keeping Current RAR0 Addr =%.2X %.2X %.2X ",
1929 hw->mac.addr[0], hw->mac.addr[1],
1931 DEBUGOUT3("%.2X %.2X %.2X\n", hw->mac.addr[3],
1932 hw->mac.addr[4], hw->mac.addr[5]);
1934 /* Setup the receive address. */
1935 DEBUGOUT("Overriding MAC Address in RAR[0]\n");
1936 DEBUGOUT3(" New MAC Addr =%.2X %.2X %.2X ",
1937 hw->mac.addr[0], hw->mac.addr[1],
1939 DEBUGOUT3("%.2X %.2X %.2X\n", hw->mac.addr[3],
1940 hw->mac.addr[4], hw->mac.addr[5]);
1942 hw->mac.ops.set_rar(hw, 0, hw->mac.addr, 0, IXGBE_RAH_AV);
1944 /* clear VMDq pool/queue selection for RAR 0 */
1945 hw->mac.ops.clear_vmdq(hw, 0, IXGBE_CLEAR_VMDQ_ALL);
1947 hw->addr_ctrl.overflow_promisc = 0;
1949 hw->addr_ctrl.rar_used_count = 1;
1951 /* Zero out the other receive addresses. */
1952 DEBUGOUT1("Clearing RAR[1-%d]\n", rar_entries - 1);
1953 for (i = 1; i < rar_entries; i++) {
1954 IXGBE_WRITE_REG(hw, IXGBE_RAL(i), 0);
1955 IXGBE_WRITE_REG(hw, IXGBE_RAH(i), 0);
1959 hw->addr_ctrl.mta_in_use = 0;
1960 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, hw->mac.mc_filter_type);
1962 DEBUGOUT(" Clearing MTA\n");
1963 for (i = 0; i < hw->mac.mcft_size; i++)
1964 IXGBE_WRITE_REG(hw, IXGBE_MTA(i), 0);
1966 ixgbe_init_uta_tables(hw);
1968 return IXGBE_SUCCESS;
1972 * ixgbe_add_uc_addr - Adds a secondary unicast address.
1973 * @hw: pointer to hardware structure
1974 * @addr: new address
1976 * Adds it to unused receive address register or goes into promiscuous mode.
1978 void ixgbe_add_uc_addr(struct ixgbe_hw *hw, u8 *addr, u32 vmdq)
1980 u32 rar_entries = hw->mac.num_rar_entries;
1983 DEBUGFUNC("ixgbe_add_uc_addr");
1985 DEBUGOUT6(" UC Addr = %.2X %.2X %.2X %.2X %.2X %.2X\n",
1986 addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]);
1989 * Place this address in the RAR if there is room,
1990 * else put the controller into promiscuous mode
1992 if (hw->addr_ctrl.rar_used_count < rar_entries) {
1993 rar = hw->addr_ctrl.rar_used_count;
1994 hw->mac.ops.set_rar(hw, rar, addr, vmdq, IXGBE_RAH_AV);
1995 DEBUGOUT1("Added a secondary address to RAR[%d]\n", rar);
1996 hw->addr_ctrl.rar_used_count++;
1998 hw->addr_ctrl.overflow_promisc++;
2001 DEBUGOUT("ixgbe_add_uc_addr Complete\n");
2005 * ixgbe_update_uc_addr_list_generic - Updates MAC list of secondary addresses
2006 * @hw: pointer to hardware structure
2007 * @addr_list: the list of new addresses
2008 * @addr_count: number of addresses
2009 * @next: iterator function to walk the address list
2011 * The given list replaces any existing list. Clears the secondary addrs from
2012 * receive address registers. Uses unused receive address registers for the
2013 * first secondary addresses, and falls back to promiscuous mode as needed.
2015 * Drivers using secondary unicast addresses must set user_set_promisc when
2016 * manually putting the device into promiscuous mode.
2018 s32 ixgbe_update_uc_addr_list_generic(struct ixgbe_hw *hw, u8 *addr_list,
2019 u32 addr_count, ixgbe_mc_addr_itr next)
2023 u32 old_promisc_setting = hw->addr_ctrl.overflow_promisc;
2028 DEBUGFUNC("ixgbe_update_uc_addr_list_generic");
2031 * Clear accounting of old secondary address list,
2032 * don't count RAR[0]
2034 uc_addr_in_use = hw->addr_ctrl.rar_used_count - 1;
2035 hw->addr_ctrl.rar_used_count -= uc_addr_in_use;
2036 hw->addr_ctrl.overflow_promisc = 0;
2038 /* Zero out the other receive addresses */
2039 DEBUGOUT1("Clearing RAR[1-%d]\n", uc_addr_in_use+1);
2040 for (i = 0; i < uc_addr_in_use; i++) {
2041 IXGBE_WRITE_REG(hw, IXGBE_RAL(1+i), 0);
2042 IXGBE_WRITE_REG(hw, IXGBE_RAH(1+i), 0);
2045 /* Add the new addresses */
2046 for (i = 0; i < addr_count; i++) {
2047 DEBUGOUT(" Adding the secondary addresses:\n");
2048 addr = next(hw, &addr_list, &vmdq);
2049 ixgbe_add_uc_addr(hw, addr, vmdq);
2052 if (hw->addr_ctrl.overflow_promisc) {
2053 /* enable promisc if not already in overflow or set by user */
2054 if (!old_promisc_setting && !hw->addr_ctrl.user_set_promisc) {
2055 DEBUGOUT(" Entering address overflow promisc mode\n");
2056 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
2057 fctrl |= IXGBE_FCTRL_UPE;
2058 IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl);
2061 /* only disable if set by overflow, not by user */
2062 if (old_promisc_setting && !hw->addr_ctrl.user_set_promisc) {
2063 DEBUGOUT(" Leaving address overflow promisc mode\n");
2064 fctrl = IXGBE_READ_REG(hw, IXGBE_FCTRL);
2065 fctrl &= ~IXGBE_FCTRL_UPE;
2066 IXGBE_WRITE_REG(hw, IXGBE_FCTRL, fctrl);
2070 DEBUGOUT("ixgbe_update_uc_addr_list_generic Complete\n");
2071 return IXGBE_SUCCESS;
2075 * ixgbe_mta_vector - Determines bit-vector in multicast table to set
2076 * @hw: pointer to hardware structure
2077 * @mc_addr: the multicast address
2079 * Extracts the 12 bits, from a multicast address, to determine which
2080 * bit-vector to set in the multicast table. The hardware uses 12 bits, from
2081 * incoming rx multicast addresses, to determine the bit-vector to check in
2082 * the MTA. Which of the 4 combination, of 12-bits, the hardware uses is set
2083 * by the MO field of the MCSTCTRL. The MO field is set during initialization
2084 * to mc_filter_type.
2086 static s32 ixgbe_mta_vector(struct ixgbe_hw *hw, u8 *mc_addr)
2090 DEBUGFUNC("ixgbe_mta_vector");
2092 switch (hw->mac.mc_filter_type) {
2093 case 0: /* use bits [47:36] of the address */
2094 vector = ((mc_addr[4] >> 4) | (((u16)mc_addr[5]) << 4));
2096 case 1: /* use bits [46:35] of the address */
2097 vector = ((mc_addr[4] >> 3) | (((u16)mc_addr[5]) << 5));
2099 case 2: /* use bits [45:34] of the address */
2100 vector = ((mc_addr[4] >> 2) | (((u16)mc_addr[5]) << 6));
2102 case 3: /* use bits [43:32] of the address */
2103 vector = ((mc_addr[4]) | (((u16)mc_addr[5]) << 8));
2105 default: /* Invalid mc_filter_type */
2106 DEBUGOUT("MC filter type param set incorrectly\n");
2111 /* vector can only be 12-bits or boundary will be exceeded */
2117 * ixgbe_set_mta - Set bit-vector in multicast table
2118 * @hw: pointer to hardware structure
2119 * @hash_value: Multicast address hash value
2121 * Sets the bit-vector in the multicast table.
2123 void ixgbe_set_mta(struct ixgbe_hw *hw, u8 *mc_addr)
2129 DEBUGFUNC("ixgbe_set_mta");
2131 hw->addr_ctrl.mta_in_use++;
2133 vector = ixgbe_mta_vector(hw, mc_addr);
2134 DEBUGOUT1(" bit-vector = 0x%03X\n", vector);
2137 * The MTA is a register array of 128 32-bit registers. It is treated
2138 * like an array of 4096 bits. We want to set bit
2139 * BitArray[vector_value]. So we figure out what register the bit is
2140 * in, read it, OR in the new bit, then write back the new value. The
2141 * register is determined by the upper 7 bits of the vector value and
2142 * the bit within that register are determined by the lower 5 bits of
2145 vector_reg = (vector >> 5) & 0x7F;
2146 vector_bit = vector & 0x1F;
2147 hw->mac.mta_shadow[vector_reg] |= (1 << vector_bit);
2151 * ixgbe_update_mc_addr_list_generic - Updates MAC list of multicast addresses
2152 * @hw: pointer to hardware structure
2153 * @mc_addr_list: the list of new multicast addresses
2154 * @mc_addr_count: number of addresses
2155 * @next: iterator function to walk the multicast address list
2156 * @clear: flag, when set clears the table beforehand
2158 * When the clear flag is set, the given list replaces any existing list.
2159 * Hashes the given addresses into the multicast table.
2161 s32 ixgbe_update_mc_addr_list_generic(struct ixgbe_hw *hw, u8 *mc_addr_list,
2162 u32 mc_addr_count, ixgbe_mc_addr_itr next,
2168 DEBUGFUNC("ixgbe_update_mc_addr_list_generic");
2171 * Set the new number of MC addresses that we are being requested to
2174 hw->addr_ctrl.num_mc_addrs = mc_addr_count;
2175 hw->addr_ctrl.mta_in_use = 0;
2177 /* Clear mta_shadow */
2179 DEBUGOUT(" Clearing MTA\n");
2180 memset(&hw->mac.mta_shadow, 0, sizeof(hw->mac.mta_shadow));
2183 /* Update mta_shadow */
2184 for (i = 0; i < mc_addr_count; i++) {
2185 DEBUGOUT(" Adding the multicast addresses:\n");
2186 ixgbe_set_mta(hw, next(hw, &mc_addr_list, &vmdq));
2190 for (i = 0; i < hw->mac.mcft_size; i++)
2191 IXGBE_WRITE_REG_ARRAY(hw, IXGBE_MTA(0), i,
2192 hw->mac.mta_shadow[i]);
2194 if (hw->addr_ctrl.mta_in_use > 0)
2195 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL,
2196 IXGBE_MCSTCTRL_MFE | hw->mac.mc_filter_type);
2198 DEBUGOUT("ixgbe_update_mc_addr_list_generic Complete\n");
2199 return IXGBE_SUCCESS;
2203 * ixgbe_enable_mc_generic - Enable multicast address in RAR
2204 * @hw: pointer to hardware structure
2206 * Enables multicast address in RAR and the use of the multicast hash table.
2208 s32 ixgbe_enable_mc_generic(struct ixgbe_hw *hw)
2210 struct ixgbe_addr_filter_info *a = &hw->addr_ctrl;
2212 DEBUGFUNC("ixgbe_enable_mc_generic");
2214 if (a->mta_in_use > 0)
2215 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, IXGBE_MCSTCTRL_MFE |
2216 hw->mac.mc_filter_type);
2218 return IXGBE_SUCCESS;
2222 * ixgbe_disable_mc_generic - Disable multicast address in RAR
2223 * @hw: pointer to hardware structure
2225 * Disables multicast address in RAR and the use of the multicast hash table.
2227 s32 ixgbe_disable_mc_generic(struct ixgbe_hw *hw)
2229 struct ixgbe_addr_filter_info *a = &hw->addr_ctrl;
2231 DEBUGFUNC("ixgbe_disable_mc_generic");
2233 if (a->mta_in_use > 0)
2234 IXGBE_WRITE_REG(hw, IXGBE_MCSTCTRL, hw->mac.mc_filter_type);
2236 return IXGBE_SUCCESS;
2240 * ixgbe_fc_enable_generic - Enable flow control
2241 * @hw: pointer to hardware structure
2242 * @packetbuf_num: packet buffer number (0-7)
2244 * Enable flow control according to the current settings.
2246 s32 ixgbe_fc_enable_generic(struct ixgbe_hw *hw, s32 packetbuf_num)
2248 s32 ret_val = IXGBE_SUCCESS;
2249 u32 mflcn_reg, fccfg_reg;
2253 DEBUGFUNC("ixgbe_fc_enable_generic");
2255 /* Negotiate the fc mode to use */
2256 ret_val = ixgbe_fc_autoneg(hw);
2257 if (ret_val == IXGBE_ERR_FLOW_CONTROL)
2260 /* Disable any previous flow control settings */
2261 mflcn_reg = IXGBE_READ_REG(hw, IXGBE_MFLCN);
2262 mflcn_reg &= ~(IXGBE_MFLCN_RFCE | IXGBE_MFLCN_RPFCE);
2264 fccfg_reg = IXGBE_READ_REG(hw, IXGBE_FCCFG);
2265 fccfg_reg &= ~(IXGBE_FCCFG_TFCE_802_3X | IXGBE_FCCFG_TFCE_PRIORITY);
2268 * The possible values of fc.current_mode are:
2269 * 0: Flow control is completely disabled
2270 * 1: Rx flow control is enabled (we can receive pause frames,
2271 * but not send pause frames).
2272 * 2: Tx flow control is enabled (we can send pause frames but
2273 * we do not support receiving pause frames).
2274 * 3: Both Rx and Tx flow control (symmetric) are enabled.
2277 switch (hw->fc.current_mode) {
2280 * Flow control is disabled by software override or autoneg.
2281 * The code below will actually disable it in the HW.
2284 case ixgbe_fc_rx_pause:
2286 * Rx Flow control is enabled and Tx Flow control is
2287 * disabled by software override. Since there really
2288 * isn't a way to advertise that we are capable of RX
2289 * Pause ONLY, we will advertise that we support both
2290 * symmetric and asymmetric Rx PAUSE. Later, we will
2291 * disable the adapter's ability to send PAUSE frames.
2293 mflcn_reg |= IXGBE_MFLCN_RFCE;
2295 case ixgbe_fc_tx_pause:
2297 * Tx Flow control is enabled, and Rx Flow control is
2298 * disabled by software override.
2300 fccfg_reg |= IXGBE_FCCFG_TFCE_802_3X;
2303 /* Flow control (both Rx and Tx) is enabled by SW override. */
2304 mflcn_reg |= IXGBE_MFLCN_RFCE;
2305 fccfg_reg |= IXGBE_FCCFG_TFCE_802_3X;
2308 DEBUGOUT("Flow control param set incorrectly\n");
2309 ret_val = IXGBE_ERR_CONFIG;
2314 /* Set 802.3x based flow control settings. */
2315 mflcn_reg |= IXGBE_MFLCN_DPF;
2316 IXGBE_WRITE_REG(hw, IXGBE_MFLCN, mflcn_reg);
2317 IXGBE_WRITE_REG(hw, IXGBE_FCCFG, fccfg_reg);
2319 fcrth = hw->fc.high_water[packetbuf_num] << 10;
2320 fcrtl = hw->fc.low_water << 10;
2322 if (hw->fc.current_mode & ixgbe_fc_tx_pause) {
2323 fcrth |= IXGBE_FCRTH_FCEN;
2324 if (hw->fc.send_xon)
2325 fcrtl |= IXGBE_FCRTL_XONE;
2328 IXGBE_WRITE_REG(hw, IXGBE_FCRTH_82599(packetbuf_num), fcrth);
2329 IXGBE_WRITE_REG(hw, IXGBE_FCRTL_82599(packetbuf_num), fcrtl);
2331 /* Configure pause time (2 TCs per register) */
2332 reg = IXGBE_READ_REG(hw, IXGBE_FCTTV(packetbuf_num / 2));
2333 if ((packetbuf_num & 1) == 0)
2334 reg = (reg & 0xFFFF0000) | hw->fc.pause_time;
2336 reg = (reg & 0x0000FFFF) | (hw->fc.pause_time << 16);
2337 IXGBE_WRITE_REG(hw, IXGBE_FCTTV(packetbuf_num / 2), reg);
2339 IXGBE_WRITE_REG(hw, IXGBE_FCRTV, (hw->fc.pause_time >> 1));
2346 * ixgbe_fc_autoneg - Configure flow control
2347 * @hw: pointer to hardware structure
2349 * Compares our advertised flow control capabilities to those advertised by
2350 * our link partner, and determines the proper flow control mode to use.
2352 s32 ixgbe_fc_autoneg(struct ixgbe_hw *hw)
2354 s32 ret_val = IXGBE_ERR_FC_NOT_NEGOTIATED;
2355 ixgbe_link_speed speed;
2358 DEBUGFUNC("ixgbe_fc_autoneg");
2360 if (hw->fc.disable_fc_autoneg)
2364 * AN should have completed when the cable was plugged in.
2365 * Look for reasons to bail out. Bail out if:
2366 * - FC autoneg is disabled, or if
2369 * Since we're being called from an LSC, link is already known to be up.
2370 * So use link_up_wait_to_complete=FALSE.
2372 hw->mac.ops.check_link(hw, &speed, &link_up, FALSE);
2374 ret_val = IXGBE_ERR_FLOW_CONTROL;
2378 switch (hw->phy.media_type) {
2379 /* Autoneg flow control on fiber adapters */
2380 case ixgbe_media_type_fiber:
2381 if (speed == IXGBE_LINK_SPEED_1GB_FULL)
2382 ret_val = ixgbe_fc_autoneg_fiber(hw);
2385 /* Autoneg flow control on backplane adapters */
2386 case ixgbe_media_type_backplane:
2387 ret_val = ixgbe_fc_autoneg_backplane(hw);
2390 /* Autoneg flow control on copper adapters */
2391 case ixgbe_media_type_copper:
2392 if (ixgbe_device_supports_autoneg_fc(hw) == IXGBE_SUCCESS)
2393 ret_val = ixgbe_fc_autoneg_copper(hw);
2401 if (ret_val == IXGBE_SUCCESS) {
2402 hw->fc.fc_was_autonegged = TRUE;
2404 hw->fc.fc_was_autonegged = FALSE;
2405 hw->fc.current_mode = hw->fc.requested_mode;
2411 * ixgbe_fc_autoneg_fiber - Enable flow control on 1 gig fiber
2412 * @hw: pointer to hardware structure
2414 * Enable flow control according on 1 gig fiber.
2416 static s32 ixgbe_fc_autoneg_fiber(struct ixgbe_hw *hw)
2418 u32 pcs_anadv_reg, pcs_lpab_reg, linkstat;
2422 * On multispeed fiber at 1g, bail out if
2423 * - link is up but AN did not complete, or if
2424 * - link is up and AN completed but timed out
2427 linkstat = IXGBE_READ_REG(hw, IXGBE_PCS1GLSTA);
2428 if ((!!(linkstat & IXGBE_PCS1GLSTA_AN_COMPLETE) == 0) ||
2429 (!!(linkstat & IXGBE_PCS1GLSTA_AN_TIMED_OUT) == 1)) {
2430 ret_val = IXGBE_ERR_FC_NOT_NEGOTIATED;
2434 pcs_anadv_reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANA);
2435 pcs_lpab_reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANLP);
2437 ret_val = ixgbe_negotiate_fc(hw, pcs_anadv_reg,
2438 pcs_lpab_reg, IXGBE_PCS1GANA_SYM_PAUSE,
2439 IXGBE_PCS1GANA_ASM_PAUSE,
2440 IXGBE_PCS1GANA_SYM_PAUSE,
2441 IXGBE_PCS1GANA_ASM_PAUSE);
2448 * ixgbe_fc_autoneg_backplane - Enable flow control IEEE clause 37
2449 * @hw: pointer to hardware structure
2451 * Enable flow control according to IEEE clause 37.
2453 static s32 ixgbe_fc_autoneg_backplane(struct ixgbe_hw *hw)
2455 u32 links2, anlp1_reg, autoc_reg, links;
2459 * On backplane, bail out if
2460 * - backplane autoneg was not completed, or if
2461 * - we are 82599 and link partner is not AN enabled
2463 links = IXGBE_READ_REG(hw, IXGBE_LINKS);
2464 if ((links & IXGBE_LINKS_KX_AN_COMP) == 0) {
2465 hw->fc.fc_was_autonegged = FALSE;
2466 hw->fc.current_mode = hw->fc.requested_mode;
2467 ret_val = IXGBE_ERR_FC_NOT_NEGOTIATED;
2471 if (hw->mac.type == ixgbe_mac_82599EB) {
2472 links2 = IXGBE_READ_REG(hw, IXGBE_LINKS2);
2473 if ((links2 & IXGBE_LINKS2_AN_SUPPORTED) == 0) {
2474 hw->fc.fc_was_autonegged = FALSE;
2475 hw->fc.current_mode = hw->fc.requested_mode;
2476 ret_val = IXGBE_ERR_FC_NOT_NEGOTIATED;
2481 * Read the 10g AN autoc and LP ability registers and resolve
2482 * local flow control settings accordingly
2484 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
2485 anlp1_reg = IXGBE_READ_REG(hw, IXGBE_ANLP1);
2487 ret_val = ixgbe_negotiate_fc(hw, autoc_reg,
2488 anlp1_reg, IXGBE_AUTOC_SYM_PAUSE, IXGBE_AUTOC_ASM_PAUSE,
2489 IXGBE_ANLP1_SYM_PAUSE, IXGBE_ANLP1_ASM_PAUSE);
2496 * ixgbe_fc_autoneg_copper - Enable flow control IEEE clause 37
2497 * @hw: pointer to hardware structure
2499 * Enable flow control according to IEEE clause 37.
2501 static s32 ixgbe_fc_autoneg_copper(struct ixgbe_hw *hw)
2503 u16 technology_ability_reg = 0;
2504 u16 lp_technology_ability_reg = 0;
2506 hw->phy.ops.read_reg(hw, IXGBE_MDIO_AUTO_NEG_ADVT,
2507 IXGBE_MDIO_AUTO_NEG_DEV_TYPE,
2508 &technology_ability_reg);
2509 hw->phy.ops.read_reg(hw, IXGBE_MDIO_AUTO_NEG_LP,
2510 IXGBE_MDIO_AUTO_NEG_DEV_TYPE,
2511 &lp_technology_ability_reg);
2513 return ixgbe_negotiate_fc(hw, (u32)technology_ability_reg,
2514 (u32)lp_technology_ability_reg,
2515 IXGBE_TAF_SYM_PAUSE, IXGBE_TAF_ASM_PAUSE,
2516 IXGBE_TAF_SYM_PAUSE, IXGBE_TAF_ASM_PAUSE);
2520 * ixgbe_negotiate_fc - Negotiate flow control
2521 * @hw: pointer to hardware structure
2522 * @adv_reg: flow control advertised settings
2523 * @lp_reg: link partner's flow control settings
2524 * @adv_sym: symmetric pause bit in advertisement
2525 * @adv_asm: asymmetric pause bit in advertisement
2526 * @lp_sym: symmetric pause bit in link partner advertisement
2527 * @lp_asm: asymmetric pause bit in link partner advertisement
2529 * Find the intersection between advertised settings and link partner's
2530 * advertised settings
2532 static s32 ixgbe_negotiate_fc(struct ixgbe_hw *hw, u32 adv_reg, u32 lp_reg,
2533 u32 adv_sym, u32 adv_asm, u32 lp_sym, u32 lp_asm)
2535 if ((!(adv_reg)) || (!(lp_reg)))
2536 return IXGBE_ERR_FC_NOT_NEGOTIATED;
2538 if ((adv_reg & adv_sym) && (lp_reg & lp_sym)) {
2540 * Now we need to check if the user selected Rx ONLY
2541 * of pause frames. In this case, we had to advertise
2542 * FULL flow control because we could not advertise RX
2543 * ONLY. Hence, we must now check to see if we need to
2544 * turn OFF the TRANSMISSION of PAUSE frames.
2546 if (hw->fc.requested_mode == ixgbe_fc_full) {
2547 hw->fc.current_mode = ixgbe_fc_full;
2548 DEBUGOUT("Flow Control = FULL.\n");
2550 hw->fc.current_mode = ixgbe_fc_rx_pause;
2551 DEBUGOUT("Flow Control=RX PAUSE frames only\n");
2553 } else if (!(adv_reg & adv_sym) && (adv_reg & adv_asm) &&
2554 (lp_reg & lp_sym) && (lp_reg & lp_asm)) {
2555 hw->fc.current_mode = ixgbe_fc_tx_pause;
2556 DEBUGOUT("Flow Control = TX PAUSE frames only.\n");
2557 } else if ((adv_reg & adv_sym) && (adv_reg & adv_asm) &&
2558 !(lp_reg & lp_sym) && (lp_reg & lp_asm)) {
2559 hw->fc.current_mode = ixgbe_fc_rx_pause;
2560 DEBUGOUT("Flow Control = RX PAUSE frames only.\n");
2562 hw->fc.current_mode = ixgbe_fc_none;
2563 DEBUGOUT("Flow Control = NONE.\n");
2565 return IXGBE_SUCCESS;
2569 * ixgbe_setup_fc - Set up flow control
2570 * @hw: pointer to hardware structure
2572 * Called at init time to set up flow control.
2574 static s32 ixgbe_setup_fc(struct ixgbe_hw *hw, s32 packetbuf_num)
2576 s32 ret_val = IXGBE_SUCCESS;
2577 u32 reg = 0, reg_bp = 0;
2580 DEBUGFUNC("ixgbe_setup_fc");
2582 /* Validate the packetbuf configuration */
2583 if (packetbuf_num < 0 || packetbuf_num > 7) {
2584 DEBUGOUT1("Invalid packet buffer number [%d], expected range "
2585 "is 0-7\n", packetbuf_num);
2586 ret_val = IXGBE_ERR_INVALID_LINK_SETTINGS;
2591 * Validate the water mark configuration. Zero water marks are invalid
2592 * because it causes the controller to just blast out fc packets.
2594 if (!hw->fc.low_water ||
2595 !hw->fc.high_water[packetbuf_num] ||
2596 !hw->fc.pause_time) {
2597 DEBUGOUT("Invalid water mark configuration\n");
2598 ret_val = IXGBE_ERR_INVALID_LINK_SETTINGS;
2603 * Validate the requested mode. Strict IEEE mode does not allow
2604 * ixgbe_fc_rx_pause because it will cause us to fail at UNH.
2606 if (hw->fc.strict_ieee && hw->fc.requested_mode == ixgbe_fc_rx_pause) {
2607 DEBUGOUT("ixgbe_fc_rx_pause not valid in strict IEEE mode\n");
2608 ret_val = IXGBE_ERR_INVALID_LINK_SETTINGS;
2613 * 10gig parts do not have a word in the EEPROM to determine the
2614 * default flow control setting, so we explicitly set it to full.
2616 if (hw->fc.requested_mode == ixgbe_fc_default)
2617 hw->fc.requested_mode = ixgbe_fc_full;
2620 * Set up the 1G and 10G flow control advertisement registers so the
2621 * HW will be able to do fc autoneg once the cable is plugged in. If
2622 * we link at 10G, the 1G advertisement is harmless and vice versa.
2625 switch (hw->phy.media_type) {
2626 case ixgbe_media_type_fiber:
2627 case ixgbe_media_type_backplane:
2628 reg = IXGBE_READ_REG(hw, IXGBE_PCS1GANA);
2629 reg_bp = IXGBE_READ_REG(hw, IXGBE_AUTOC);
2632 case ixgbe_media_type_copper:
2633 hw->phy.ops.read_reg(hw, IXGBE_MDIO_AUTO_NEG_ADVT,
2634 IXGBE_MDIO_AUTO_NEG_DEV_TYPE, ®_cu);
2642 * The possible values of fc.requested_mode are:
2643 * 0: Flow control is completely disabled
2644 * 1: Rx flow control is enabled (we can receive pause frames,
2645 * but not send pause frames).
2646 * 2: Tx flow control is enabled (we can send pause frames but
2647 * we do not support receiving pause frames).
2648 * 3: Both Rx and Tx flow control (symmetric) are enabled.
2651 switch (hw->fc.requested_mode) {
2653 /* Flow control completely disabled by software override. */
2654 reg &= ~(IXGBE_PCS1GANA_SYM_PAUSE | IXGBE_PCS1GANA_ASM_PAUSE);
2655 if (hw->phy.media_type == ixgbe_media_type_backplane)
2656 reg_bp &= ~(IXGBE_AUTOC_SYM_PAUSE |
2657 IXGBE_AUTOC_ASM_PAUSE);
2658 else if (hw->phy.media_type == ixgbe_media_type_copper)
2659 reg_cu &= ~(IXGBE_TAF_SYM_PAUSE | IXGBE_TAF_ASM_PAUSE);
2661 case ixgbe_fc_rx_pause:
2663 * Rx Flow control is enabled and Tx Flow control is
2664 * disabled by software override. Since there really
2665 * isn't a way to advertise that we are capable of RX
2666 * Pause ONLY, we will advertise that we support both
2667 * symmetric and asymmetric Rx PAUSE. Later, we will
2668 * disable the adapter's ability to send PAUSE frames.
2670 reg |= (IXGBE_PCS1GANA_SYM_PAUSE | IXGBE_PCS1GANA_ASM_PAUSE);
2671 if (hw->phy.media_type == ixgbe_media_type_backplane)
2672 reg_bp |= (IXGBE_AUTOC_SYM_PAUSE |
2673 IXGBE_AUTOC_ASM_PAUSE);
2674 else if (hw->phy.media_type == ixgbe_media_type_copper)
2675 reg_cu |= (IXGBE_TAF_SYM_PAUSE | IXGBE_TAF_ASM_PAUSE);
2677 case ixgbe_fc_tx_pause:
2679 * Tx Flow control is enabled, and Rx Flow control is
2680 * disabled by software override.
2682 reg |= (IXGBE_PCS1GANA_ASM_PAUSE);
2683 reg &= ~(IXGBE_PCS1GANA_SYM_PAUSE);
2684 if (hw->phy.media_type == ixgbe_media_type_backplane) {
2685 reg_bp |= (IXGBE_AUTOC_ASM_PAUSE);
2686 reg_bp &= ~(IXGBE_AUTOC_SYM_PAUSE);
2687 } else if (hw->phy.media_type == ixgbe_media_type_copper) {
2688 reg_cu |= (IXGBE_TAF_ASM_PAUSE);
2689 reg_cu &= ~(IXGBE_TAF_SYM_PAUSE);
2693 /* Flow control (both Rx and Tx) is enabled by SW override. */
2694 reg |= (IXGBE_PCS1GANA_SYM_PAUSE | IXGBE_PCS1GANA_ASM_PAUSE);
2695 if (hw->phy.media_type == ixgbe_media_type_backplane)
2696 reg_bp |= (IXGBE_AUTOC_SYM_PAUSE |
2697 IXGBE_AUTOC_ASM_PAUSE);
2698 else if (hw->phy.media_type == ixgbe_media_type_copper)
2699 reg_cu |= (IXGBE_TAF_SYM_PAUSE | IXGBE_TAF_ASM_PAUSE);
2702 DEBUGOUT("Flow control param set incorrectly\n");
2703 ret_val = IXGBE_ERR_CONFIG;
2708 if (hw->mac.type != ixgbe_mac_X540) {
2710 * Enable auto-negotiation between the MAC & PHY;
2711 * the MAC will advertise clause 37 flow control.
2713 IXGBE_WRITE_REG(hw, IXGBE_PCS1GANA, reg);
2714 reg = IXGBE_READ_REG(hw, IXGBE_PCS1GLCTL);
2716 /* Disable AN timeout */
2717 if (hw->fc.strict_ieee)
2718 reg &= ~IXGBE_PCS1GLCTL_AN_1G_TIMEOUT_EN;
2720 IXGBE_WRITE_REG(hw, IXGBE_PCS1GLCTL, reg);
2721 DEBUGOUT1("Set up FC; PCS1GLCTL = 0x%08X\n", reg);
2725 * AUTOC restart handles negotiation of 1G and 10G on backplane
2726 * and copper. There is no need to set the PCS1GCTL register.
2729 if (hw->phy.media_type == ixgbe_media_type_backplane) {
2730 reg_bp |= IXGBE_AUTOC_AN_RESTART;
2731 IXGBE_WRITE_REG(hw, IXGBE_AUTOC, reg_bp);
2732 } else if ((hw->phy.media_type == ixgbe_media_type_copper) &&
2733 (ixgbe_device_supports_autoneg_fc(hw) == IXGBE_SUCCESS)) {
2734 hw->phy.ops.write_reg(hw, IXGBE_MDIO_AUTO_NEG_ADVT,
2735 IXGBE_MDIO_AUTO_NEG_DEV_TYPE, reg_cu);
2738 DEBUGOUT1("Set up FC; IXGBE_AUTOC = 0x%08X\n", reg);
2744 * ixgbe_disable_pcie_master - Disable PCI-express master access
2745 * @hw: pointer to hardware structure
2747 * Disables PCI-Express master access and verifies there are no pending
2748 * requests. IXGBE_ERR_MASTER_REQUESTS_PENDING is returned if master disable
2749 * bit hasn't caused the master requests to be disabled, else IXGBE_SUCCESS
2750 * is returned signifying master requests disabled.
2752 s32 ixgbe_disable_pcie_master(struct ixgbe_hw *hw)
2754 s32 status = IXGBE_SUCCESS;
2757 DEBUGFUNC("ixgbe_disable_pcie_master");
2759 /* Always set this bit to ensure any future transactions are blocked */
2760 IXGBE_WRITE_REG(hw, IXGBE_CTRL, IXGBE_CTRL_GIO_DIS);
2762 /* Exit if master requets are blocked */
2763 if (!(IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_GIO))
2766 /* Poll for master request bit to clear */
2767 for (i = 0; i < IXGBE_PCI_MASTER_DISABLE_TIMEOUT; i++) {
2769 if (!(IXGBE_READ_REG(hw, IXGBE_STATUS) & IXGBE_STATUS_GIO))
2774 * Two consecutive resets are required via CTRL.RST per datasheet
2775 * 5.2.5.3.2 Master Disable. We set a flag to inform the reset routine
2776 * of this need. The first reset prevents new master requests from
2777 * being issued by our device. We then must wait 1usec or more for any
2778 * remaining completions from the PCIe bus to trickle in, and then reset
2779 * again to clear out any effects they may have had on our device.
2781 DEBUGOUT("GIO Master Disable bit didn't clear - requesting resets\n");
2782 hw->mac.flags |= IXGBE_FLAGS_DOUBLE_RESET_REQUIRED;
2785 * Before proceeding, make sure that the PCIe block does not have
2786 * transactions pending.
2788 for (i = 0; i < IXGBE_PCI_MASTER_DISABLE_TIMEOUT; i++) {
2790 if (!(IXGBE_READ_PCIE_WORD(hw, IXGBE_PCI_DEVICE_STATUS) &
2791 IXGBE_PCI_DEVICE_STATUS_TRANSACTION_PENDING))
2795 DEBUGOUT("PCIe transaction pending bit also did not clear.\n");
2796 status = IXGBE_ERR_MASTER_REQUESTS_PENDING;
2803 * ixgbe_acquire_swfw_sync - Acquire SWFW semaphore
2804 * @hw: pointer to hardware structure
2805 * @mask: Mask to specify which semaphore to acquire
2807 * Acquires the SWFW semaphore through the GSSR register for the specified
2808 * function (CSR, PHY0, PHY1, EEPROM, Flash)
2810 s32 ixgbe_acquire_swfw_sync(struct ixgbe_hw *hw, u16 mask)
2814 u32 fwmask = mask << 5;
2817 DEBUGFUNC("ixgbe_acquire_swfw_sync");
2821 * SW EEPROM semaphore bit is used for access to all
2822 * SW_FW_SYNC/GSSR bits (not just EEPROM)
2824 if (ixgbe_get_eeprom_semaphore(hw))
2825 return IXGBE_ERR_SWFW_SYNC;
2827 gssr = IXGBE_READ_REG(hw, IXGBE_GSSR);
2828 if (!(gssr & (fwmask | swmask)))
2832 * Firmware currently using resource (fwmask) or other software
2833 * thread currently using resource (swmask)
2835 ixgbe_release_eeprom_semaphore(hw);
2841 DEBUGOUT("Driver can't access resource, SW_FW_SYNC timeout.\n");
2842 return IXGBE_ERR_SWFW_SYNC;
2846 IXGBE_WRITE_REG(hw, IXGBE_GSSR, gssr);
2848 ixgbe_release_eeprom_semaphore(hw);
2849 return IXGBE_SUCCESS;
2853 * ixgbe_release_swfw_sync - Release SWFW semaphore
2854 * @hw: pointer to hardware structure
2855 * @mask: Mask to specify which semaphore to release
2857 * Releases the SWFW semaphore through the GSSR register for the specified
2858 * function (CSR, PHY0, PHY1, EEPROM, Flash)
2860 void ixgbe_release_swfw_sync(struct ixgbe_hw *hw, u16 mask)
2865 DEBUGFUNC("ixgbe_release_swfw_sync");
2867 ixgbe_get_eeprom_semaphore(hw);
2869 gssr = IXGBE_READ_REG(hw, IXGBE_GSSR);
2871 IXGBE_WRITE_REG(hw, IXGBE_GSSR, gssr);
2873 ixgbe_release_eeprom_semaphore(hw);
2877 * ixgbe_enable_rx_dma_generic - Enable the Rx DMA unit
2878 * @hw: pointer to hardware structure
2879 * @regval: register value to write to RXCTRL
2881 * Enables the Rx DMA unit
2883 s32 ixgbe_enable_rx_dma_generic(struct ixgbe_hw *hw, u32 regval)
2885 DEBUGFUNC("ixgbe_enable_rx_dma_generic");
2887 IXGBE_WRITE_REG(hw, IXGBE_RXCTRL, regval);
2889 return IXGBE_SUCCESS;
2893 * ixgbe_blink_led_start_generic - Blink LED based on index.
2894 * @hw: pointer to hardware structure
2895 * @index: led number to blink
2897 s32 ixgbe_blink_led_start_generic(struct ixgbe_hw *hw, u32 index)
2899 ixgbe_link_speed speed = 0;
2901 u32 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
2902 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
2904 DEBUGFUNC("ixgbe_blink_led_start_generic");
2907 * Link must be up to auto-blink the LEDs;
2908 * Force it if link is down.
2910 hw->mac.ops.check_link(hw, &speed, &link_up, FALSE);
2913 autoc_reg |= IXGBE_AUTOC_AN_RESTART;
2914 autoc_reg |= IXGBE_AUTOC_FLU;
2915 IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc_reg);
2916 IXGBE_WRITE_FLUSH(hw);
2920 led_reg &= ~IXGBE_LED_MODE_MASK(index);
2921 led_reg |= IXGBE_LED_BLINK(index);
2922 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
2923 IXGBE_WRITE_FLUSH(hw);
2925 return IXGBE_SUCCESS;
2929 * ixgbe_blink_led_stop_generic - Stop blinking LED based on index.
2930 * @hw: pointer to hardware structure
2931 * @index: led number to stop blinking
2933 s32 ixgbe_blink_led_stop_generic(struct ixgbe_hw *hw, u32 index)
2935 u32 autoc_reg = IXGBE_READ_REG(hw, IXGBE_AUTOC);
2936 u32 led_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
2938 DEBUGFUNC("ixgbe_blink_led_stop_generic");
2941 autoc_reg &= ~IXGBE_AUTOC_FLU;
2942 autoc_reg |= IXGBE_AUTOC_AN_RESTART;
2943 IXGBE_WRITE_REG(hw, IXGBE_AUTOC, autoc_reg);
2945 led_reg &= ~IXGBE_LED_MODE_MASK(index);
2946 led_reg &= ~IXGBE_LED_BLINK(index);
2947 led_reg |= IXGBE_LED_LINK_ACTIVE << IXGBE_LED_MODE_SHIFT(index);
2948 IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, led_reg);
2949 IXGBE_WRITE_FLUSH(hw);
2951 return IXGBE_SUCCESS;
2955 * ixgbe_get_san_mac_addr_offset - Get SAN MAC address offset from the EEPROM
2956 * @hw: pointer to hardware structure
2957 * @san_mac_offset: SAN MAC address offset
2959 * This function will read the EEPROM location for the SAN MAC address
2960 * pointer, and returns the value at that location. This is used in both
2961 * get and set mac_addr routines.
2963 static s32 ixgbe_get_san_mac_addr_offset(struct ixgbe_hw *hw,
2964 u16 *san_mac_offset)
2966 DEBUGFUNC("ixgbe_get_san_mac_addr_offset");
2969 * First read the EEPROM pointer to see if the MAC addresses are
2972 hw->eeprom.ops.read(hw, IXGBE_SAN_MAC_ADDR_PTR, san_mac_offset);
2974 return IXGBE_SUCCESS;
2978 * ixgbe_get_san_mac_addr_generic - SAN MAC address retrieval from the EEPROM
2979 * @hw: pointer to hardware structure
2980 * @san_mac_addr: SAN MAC address
2982 * Reads the SAN MAC address from the EEPROM, if it's available. This is
2983 * per-port, so set_lan_id() must be called before reading the addresses.
2984 * set_lan_id() is called by identify_sfp(), but this cannot be relied
2985 * upon for non-SFP connections, so we must call it here.
2987 s32 ixgbe_get_san_mac_addr_generic(struct ixgbe_hw *hw, u8 *san_mac_addr)
2989 u16 san_mac_data, san_mac_offset;
2992 DEBUGFUNC("ixgbe_get_san_mac_addr_generic");
2995 * First read the EEPROM pointer to see if the MAC addresses are
2996 * available. If they're not, no point in calling set_lan_id() here.
2998 ixgbe_get_san_mac_addr_offset(hw, &san_mac_offset);
3000 if ((san_mac_offset == 0) || (san_mac_offset == 0xFFFF)) {
3002 * No addresses available in this EEPROM. It's not an
3003 * error though, so just wipe the local address and return.
3005 for (i = 0; i < 6; i++)
3006 san_mac_addr[i] = 0xFF;
3008 goto san_mac_addr_out;
3011 /* make sure we know which port we need to program */
3012 hw->mac.ops.set_lan_id(hw);
3013 /* apply the port offset to the address offset */
3014 (hw->bus.func) ? (san_mac_offset += IXGBE_SAN_MAC_ADDR_PORT1_OFFSET) :
3015 (san_mac_offset += IXGBE_SAN_MAC_ADDR_PORT0_OFFSET);
3016 for (i = 0; i < 3; i++) {
3017 hw->eeprom.ops.read(hw, san_mac_offset, &san_mac_data);
3018 san_mac_addr[i * 2] = (u8)(san_mac_data);
3019 san_mac_addr[i * 2 + 1] = (u8)(san_mac_data >> 8);
3024 return IXGBE_SUCCESS;
3028 * ixgbe_set_san_mac_addr_generic - Write the SAN MAC address to the EEPROM
3029 * @hw: pointer to hardware structure
3030 * @san_mac_addr: SAN MAC address
3032 * Write a SAN MAC address to the EEPROM.
3034 s32 ixgbe_set_san_mac_addr_generic(struct ixgbe_hw *hw, u8 *san_mac_addr)
3036 s32 status = IXGBE_SUCCESS;
3037 u16 san_mac_data, san_mac_offset;
3040 DEBUGFUNC("ixgbe_set_san_mac_addr_generic");
3042 /* Look for SAN mac address pointer. If not defined, return */
3043 ixgbe_get_san_mac_addr_offset(hw, &san_mac_offset);
3045 if ((san_mac_offset == 0) || (san_mac_offset == 0xFFFF)) {
3046 status = IXGBE_ERR_NO_SAN_ADDR_PTR;
3047 goto san_mac_addr_out;
3050 /* Make sure we know which port we need to write */
3051 hw->mac.ops.set_lan_id(hw);
3052 /* Apply the port offset to the address offset */
3053 (hw->bus.func) ? (san_mac_offset += IXGBE_SAN_MAC_ADDR_PORT1_OFFSET) :
3054 (san_mac_offset += IXGBE_SAN_MAC_ADDR_PORT0_OFFSET);
3056 for (i = 0; i < 3; i++) {
3057 san_mac_data = (u16)((u16)(san_mac_addr[i * 2 + 1]) << 8);
3058 san_mac_data |= (u16)(san_mac_addr[i * 2]);
3059 hw->eeprom.ops.write(hw, san_mac_offset, san_mac_data);
3068 * ixgbe_get_pcie_msix_count_generic - Gets MSI-X vector count
3069 * @hw: pointer to hardware structure
3071 * Read PCIe configuration space, and get the MSI-X vector count from
3072 * the capabilities table.
3074 u32 ixgbe_get_pcie_msix_count_generic(struct ixgbe_hw *hw)
3076 u32 msix_count = 64;
3078 DEBUGFUNC("ixgbe_get_pcie_msix_count_generic");
3079 if (hw->mac.msix_vectors_from_pcie) {
3080 msix_count = IXGBE_READ_PCIE_WORD(hw,
3081 IXGBE_PCIE_MSIX_82599_CAPS);
3082 msix_count &= IXGBE_PCIE_MSIX_TBL_SZ_MASK;
3084 /* MSI-X count is zero-based in HW, so increment to give
3093 * ixgbe_insert_mac_addr_generic - Find a RAR for this mac address
3094 * @hw: pointer to hardware structure
3095 * @addr: Address to put into receive address register
3096 * @vmdq: VMDq pool to assign
3098 * Puts an ethernet address into a receive address register, or
3099 * finds the rar that it is aleady in; adds to the pool list
3101 s32 ixgbe_insert_mac_addr_generic(struct ixgbe_hw *hw, u8 *addr, u32 vmdq)
3103 static const u32 NO_EMPTY_RAR_FOUND = 0xFFFFFFFF;
3104 u32 first_empty_rar = NO_EMPTY_RAR_FOUND;
3106 u32 rar_low, rar_high;
3107 u32 addr_low, addr_high;
3109 DEBUGFUNC("ixgbe_insert_mac_addr_generic");
3111 /* swap bytes for HW little endian */
3112 addr_low = addr[0] | (addr[1] << 8)
3115 addr_high = addr[4] | (addr[5] << 8);
3118 * Either find the mac_id in rar or find the first empty space.
3119 * rar_highwater points to just after the highest currently used
3120 * rar in order to shorten the search. It grows when we add a new
3123 for (rar = 0; rar < hw->mac.rar_highwater; rar++) {
3124 rar_high = IXGBE_READ_REG(hw, IXGBE_RAH(rar));
3126 if (((IXGBE_RAH_AV & rar_high) == 0)
3127 && first_empty_rar == NO_EMPTY_RAR_FOUND) {
3128 first_empty_rar = rar;
3129 } else if ((rar_high & 0xFFFF) == addr_high) {
3130 rar_low = IXGBE_READ_REG(hw, IXGBE_RAL(rar));
3131 if (rar_low == addr_low)
3132 break; /* found it already in the rars */
3136 if (rar < hw->mac.rar_highwater) {
3137 /* already there so just add to the pool bits */
3138 ixgbe_set_vmdq(hw, rar, vmdq);
3139 } else if (first_empty_rar != NO_EMPTY_RAR_FOUND) {
3140 /* stick it into first empty RAR slot we found */
3141 rar = first_empty_rar;
3142 ixgbe_set_rar(hw, rar, addr, vmdq, IXGBE_RAH_AV);
3143 } else if (rar == hw->mac.rar_highwater) {
3144 /* add it to the top of the list and inc the highwater mark */
3145 ixgbe_set_rar(hw, rar, addr, vmdq, IXGBE_RAH_AV);
3146 hw->mac.rar_highwater++;
3147 } else if (rar >= hw->mac.num_rar_entries) {
3148 return IXGBE_ERR_INVALID_MAC_ADDR;
3152 * If we found rar[0], make sure the default pool bit (we use pool 0)
3153 * remains cleared to be sure default pool packets will get delivered
3156 ixgbe_clear_vmdq(hw, rar, 0);
3162 * ixgbe_clear_vmdq_generic - Disassociate a VMDq pool index from a rx address
3163 * @hw: pointer to hardware struct
3164 * @rar: receive address register index to disassociate
3165 * @vmdq: VMDq pool index to remove from the rar
3167 s32 ixgbe_clear_vmdq_generic(struct ixgbe_hw *hw, u32 rar, u32 vmdq)
3169 u32 mpsar_lo, mpsar_hi;
3170 u32 rar_entries = hw->mac.num_rar_entries;
3172 DEBUGFUNC("ixgbe_clear_vmdq_generic");
3174 /* Make sure we are using a valid rar index range */
3175 if (rar >= rar_entries) {
3176 DEBUGOUT1("RAR index %d is out of range.\n", rar);
3177 return IXGBE_ERR_INVALID_ARGUMENT;
3180 mpsar_lo = IXGBE_READ_REG(hw, IXGBE_MPSAR_LO(rar));
3181 mpsar_hi = IXGBE_READ_REG(hw, IXGBE_MPSAR_HI(rar));
3183 if (!mpsar_lo && !mpsar_hi)
3186 if (vmdq == IXGBE_CLEAR_VMDQ_ALL) {
3188 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), 0);
3192 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), 0);
3195 } else if (vmdq < 32) {
3196 mpsar_lo &= ~(1 << vmdq);
3197 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), mpsar_lo);
3199 mpsar_hi &= ~(1 << (vmdq - 32));
3200 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), mpsar_hi);
3203 /* was that the last pool using this rar? */
3204 if (mpsar_lo == 0 && mpsar_hi == 0 && rar != 0)
3205 hw->mac.ops.clear_rar(hw, rar);
3207 return IXGBE_SUCCESS;
3211 * ixgbe_set_vmdq_generic - Associate a VMDq pool index with a rx address
3212 * @hw: pointer to hardware struct
3213 * @rar: receive address register index to associate with a VMDq index
3214 * @vmdq: VMDq pool index
3216 s32 ixgbe_set_vmdq_generic(struct ixgbe_hw *hw, u32 rar, u32 vmdq)
3219 u32 rar_entries = hw->mac.num_rar_entries;
3221 DEBUGFUNC("ixgbe_set_vmdq_generic");
3223 /* Make sure we are using a valid rar index range */
3224 if (rar >= rar_entries) {
3225 DEBUGOUT1("RAR index %d is out of range.\n", rar);
3226 return IXGBE_ERR_INVALID_ARGUMENT;
3230 mpsar = IXGBE_READ_REG(hw, IXGBE_MPSAR_LO(rar));
3232 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_LO(rar), mpsar);
3234 mpsar = IXGBE_READ_REG(hw, IXGBE_MPSAR_HI(rar));
3235 mpsar |= 1 << (vmdq - 32);
3236 IXGBE_WRITE_REG(hw, IXGBE_MPSAR_HI(rar), mpsar);
3238 return IXGBE_SUCCESS;
3242 * ixgbe_init_uta_tables_generic - Initialize the Unicast Table Array
3243 * @hw: pointer to hardware structure
3245 s32 ixgbe_init_uta_tables_generic(struct ixgbe_hw *hw)
3249 DEBUGFUNC("ixgbe_init_uta_tables_generic");
3250 DEBUGOUT(" Clearing UTA\n");
3252 for (i = 0; i < 128; i++)
3253 IXGBE_WRITE_REG(hw, IXGBE_UTA(i), 0);
3255 return IXGBE_SUCCESS;
3259 * ixgbe_find_vlvf_slot - find the vlanid or the first empty slot
3260 * @hw: pointer to hardware structure
3261 * @vlan: VLAN id to write to VLAN filter
3263 * return the VLVF index where this VLAN id should be placed
3266 s32 ixgbe_find_vlvf_slot(struct ixgbe_hw *hw, u32 vlan)
3269 u32 first_empty_slot = 0;
3272 /* short cut the special case */
3277 * Search for the vlan id in the VLVF entries. Save off the first empty
3278 * slot found along the way
3280 for (regindex = 1; regindex < IXGBE_VLVF_ENTRIES; regindex++) {
3281 bits = IXGBE_READ_REG(hw, IXGBE_VLVF(regindex));
3282 if (!bits && !(first_empty_slot))
3283 first_empty_slot = regindex;
3284 else if ((bits & 0x0FFF) == vlan)
3289 * If regindex is less than IXGBE_VLVF_ENTRIES, then we found the vlan
3290 * in the VLVF. Else use the first empty VLVF register for this
3293 if (regindex >= IXGBE_VLVF_ENTRIES) {
3294 if (first_empty_slot)
3295 regindex = first_empty_slot;
3297 DEBUGOUT("No space in VLVF.\n");
3298 regindex = IXGBE_ERR_NO_SPACE;
3306 * ixgbe_set_vfta_generic - Set VLAN filter table
3307 * @hw: pointer to hardware structure
3308 * @vlan: VLAN id to write to VLAN filter
3309 * @vind: VMDq output index that maps queue to VLAN id in VFVFB
3310 * @vlan_on: boolean flag to turn on/off VLAN in VFVF
3312 * Turn on/off specified VLAN in the VLAN filter table.
3314 s32 ixgbe_set_vfta_generic(struct ixgbe_hw *hw, u32 vlan, u32 vind,
3323 bool vfta_changed = FALSE;
3325 DEBUGFUNC("ixgbe_set_vfta_generic");
3328 return IXGBE_ERR_PARAM;
3331 * this is a 2 part operation - first the VFTA, then the
3332 * VLVF and VLVFB if VT Mode is set
3333 * We don't write the VFTA until we know the VLVF part succeeded.
3337 * The VFTA is a bitstring made up of 128 32-bit registers
3338 * that enable the particular VLAN id, much like the MTA:
3339 * bits[11-5]: which register
3340 * bits[4-0]: which bit in the register
3342 regindex = (vlan >> 5) & 0x7F;
3343 bitindex = vlan & 0x1F;
3344 targetbit = (1 << bitindex);
3345 vfta = IXGBE_READ_REG(hw, IXGBE_VFTA(regindex));
3348 if (!(vfta & targetbit)) {
3350 vfta_changed = TRUE;
3353 if ((vfta & targetbit)) {
3355 vfta_changed = TRUE;
3362 * make sure the vlan is in VLVF
3363 * set the vind bit in the matching VLVFB
3365 * clear the pool bit and possibly the vind
3367 vt = IXGBE_READ_REG(hw, IXGBE_VT_CTL);
3368 if (vt & IXGBE_VT_CTL_VT_ENABLE) {
3371 vlvf_index = ixgbe_find_vlvf_slot(hw, vlan);
3376 /* set the pool bit */
3378 bits = IXGBE_READ_REG(hw,
3379 IXGBE_VLVFB(vlvf_index*2));
3380 bits |= (1 << vind);
3382 IXGBE_VLVFB(vlvf_index*2),
3385 bits = IXGBE_READ_REG(hw,
3386 IXGBE_VLVFB((vlvf_index*2)+1));
3387 bits |= (1 << (vind-32));
3389 IXGBE_VLVFB((vlvf_index*2)+1),
3393 /* clear the pool bit */
3395 bits = IXGBE_READ_REG(hw,
3396 IXGBE_VLVFB(vlvf_index*2));
3397 bits &= ~(1 << vind);
3399 IXGBE_VLVFB(vlvf_index*2),
3401 bits |= IXGBE_READ_REG(hw,
3402 IXGBE_VLVFB((vlvf_index*2)+1));
3404 bits = IXGBE_READ_REG(hw,
3405 IXGBE_VLVFB((vlvf_index*2)+1));
3406 bits &= ~(1 << (vind-32));
3408 IXGBE_VLVFB((vlvf_index*2)+1),
3410 bits |= IXGBE_READ_REG(hw,
3411 IXGBE_VLVFB(vlvf_index*2));
3416 * If there are still bits set in the VLVFB registers
3417 * for the VLAN ID indicated we need to see if the
3418 * caller is requesting that we clear the VFTA entry bit.
3419 * If the caller has requested that we clear the VFTA
3420 * entry bit but there are still pools/VFs using this VLAN
3421 * ID entry then ignore the request. We're not worried
3422 * about the case where we're turning the VFTA VLAN ID
3423 * entry bit on, only when requested to turn it off as
3424 * there may be multiple pools and/or VFs using the
3425 * VLAN ID entry. In that case we cannot clear the
3426 * VFTA bit until all pools/VFs using that VLAN ID have also
3427 * been cleared. This will be indicated by "bits" being
3431 IXGBE_WRITE_REG(hw, IXGBE_VLVF(vlvf_index),
3432 (IXGBE_VLVF_VIEN | vlan));
3434 /* someone wants to clear the vfta entry
3435 * but some pools/VFs are still using it.
3437 vfta_changed = FALSE;
3441 IXGBE_WRITE_REG(hw, IXGBE_VLVF(vlvf_index), 0);
3445 IXGBE_WRITE_REG(hw, IXGBE_VFTA(regindex), vfta);
3447 return IXGBE_SUCCESS;
3451 * ixgbe_clear_vfta_generic - Clear VLAN filter table
3452 * @hw: pointer to hardware structure
3454 * Clears the VLAN filer table, and the VMDq index associated with the filter
3456 s32 ixgbe_clear_vfta_generic(struct ixgbe_hw *hw)
3460 DEBUGFUNC("ixgbe_clear_vfta_generic");
3462 for (offset = 0; offset < hw->mac.vft_size; offset++)
3463 IXGBE_WRITE_REG(hw, IXGBE_VFTA(offset), 0);
3465 for (offset = 0; offset < IXGBE_VLVF_ENTRIES; offset++) {
3466 IXGBE_WRITE_REG(hw, IXGBE_VLVF(offset), 0);
3467 IXGBE_WRITE_REG(hw, IXGBE_VLVFB(offset*2), 0);
3468 IXGBE_WRITE_REG(hw, IXGBE_VLVFB((offset*2)+1), 0);
3471 return IXGBE_SUCCESS;
3475 * ixgbe_check_mac_link_generic - Determine link and speed status
3476 * @hw: pointer to hardware structure
3477 * @speed: pointer to link speed
3478 * @link_up: TRUE when link is up
3479 * @link_up_wait_to_complete: bool used to wait for link up or not
3481 * Reads the links register to determine if link is up and the current speed
3483 s32 ixgbe_check_mac_link_generic(struct ixgbe_hw *hw, ixgbe_link_speed *speed,
3484 bool *link_up, bool link_up_wait_to_complete)
3486 u32 links_reg, links_orig;
3489 DEBUGFUNC("ixgbe_check_mac_link_generic");
3491 /* clear the old state */
3492 links_orig = IXGBE_READ_REG(hw, IXGBE_LINKS);
3494 links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
3496 if (links_orig != links_reg) {
3497 DEBUGOUT2("LINKS changed from %08X to %08X\n",
3498 links_orig, links_reg);
3501 if (link_up_wait_to_complete) {
3502 for (i = 0; i < IXGBE_LINK_UP_TIME; i++) {
3503 if (links_reg & IXGBE_LINKS_UP) {
3510 links_reg = IXGBE_READ_REG(hw, IXGBE_LINKS);
3513 if (links_reg & IXGBE_LINKS_UP)
3519 if ((links_reg & IXGBE_LINKS_SPEED_82599) ==
3520 IXGBE_LINKS_SPEED_10G_82599)
3521 *speed = IXGBE_LINK_SPEED_10GB_FULL;
3522 else if ((links_reg & IXGBE_LINKS_SPEED_82599) ==
3523 IXGBE_LINKS_SPEED_1G_82599)
3524 *speed = IXGBE_LINK_SPEED_1GB_FULL;
3525 else if ((links_reg & IXGBE_LINKS_SPEED_82599) ==
3526 IXGBE_LINKS_SPEED_100_82599)
3527 *speed = IXGBE_LINK_SPEED_100_FULL;
3529 *speed = IXGBE_LINK_SPEED_UNKNOWN;
3531 /* if link is down, zero out the current_mode */
3532 if (*link_up == FALSE) {
3533 hw->fc.current_mode = ixgbe_fc_none;
3534 hw->fc.fc_was_autonegged = FALSE;
3537 return IXGBE_SUCCESS;
3541 * ixgbe_get_wwn_prefix_generic - Get alternative WWNN/WWPN prefix from
3543 * @hw: pointer to hardware structure
3544 * @wwnn_prefix: the alternative WWNN prefix
3545 * @wwpn_prefix: the alternative WWPN prefix
3547 * This function will read the EEPROM from the alternative SAN MAC address
3548 * block to check the support for the alternative WWNN/WWPN prefix support.
3550 s32 ixgbe_get_wwn_prefix_generic(struct ixgbe_hw *hw, u16 *wwnn_prefix,
3554 u16 alt_san_mac_blk_offset;
3556 DEBUGFUNC("ixgbe_get_wwn_prefix_generic");
3558 /* clear output first */
3559 *wwnn_prefix = 0xFFFF;
3560 *wwpn_prefix = 0xFFFF;
3562 /* check if alternative SAN MAC is supported */
3563 hw->eeprom.ops.read(hw, IXGBE_ALT_SAN_MAC_ADDR_BLK_PTR,
3564 &alt_san_mac_blk_offset);
3566 if ((alt_san_mac_blk_offset == 0) ||
3567 (alt_san_mac_blk_offset == 0xFFFF))
3568 goto wwn_prefix_out;
3570 /* check capability in alternative san mac address block */
3571 offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_CAPS_OFFSET;
3572 hw->eeprom.ops.read(hw, offset, &caps);
3573 if (!(caps & IXGBE_ALT_SAN_MAC_ADDR_CAPS_ALTWWN))
3574 goto wwn_prefix_out;
3576 /* get the corresponding prefix for WWNN/WWPN */
3577 offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_WWNN_OFFSET;
3578 hw->eeprom.ops.read(hw, offset, wwnn_prefix);
3580 offset = alt_san_mac_blk_offset + IXGBE_ALT_SAN_MAC_ADDR_WWPN_OFFSET;
3581 hw->eeprom.ops.read(hw, offset, wwpn_prefix);
3584 return IXGBE_SUCCESS;
3588 * ixgbe_get_fcoe_boot_status_generic - Get FCOE boot status from EEPROM
3589 * @hw: pointer to hardware structure
3590 * @bs: the fcoe boot status
3592 * This function will read the FCOE boot status from the iSCSI FCOE block
3594 s32 ixgbe_get_fcoe_boot_status_generic(struct ixgbe_hw *hw, u16 *bs)
3596 u16 offset, caps, flags;
3599 DEBUGFUNC("ixgbe_get_fcoe_boot_status_generic");
3601 /* clear output first */
3602 *bs = ixgbe_fcoe_bootstatus_unavailable;
3604 /* check if FCOE IBA block is present */
3605 offset = IXGBE_FCOE_IBA_CAPS_BLK_PTR;
3606 status = hw->eeprom.ops.read(hw, offset, &caps);
3607 if (status != IXGBE_SUCCESS)
3610 if (!(caps & IXGBE_FCOE_IBA_CAPS_FCOE))
3613 /* check if iSCSI FCOE block is populated */
3614 status = hw->eeprom.ops.read(hw, IXGBE_ISCSI_FCOE_BLK_PTR, &offset);
3615 if (status != IXGBE_SUCCESS)
3618 if ((offset == 0) || (offset == 0xFFFF))
3621 /* read fcoe flags in iSCSI FCOE block */
3622 offset = offset + IXGBE_ISCSI_FCOE_FLAGS_OFFSET;
3623 status = hw->eeprom.ops.read(hw, offset, &flags);
3624 if (status != IXGBE_SUCCESS)
3627 if (flags & IXGBE_ISCSI_FCOE_FLAGS_ENABLE)
3628 *bs = ixgbe_fcoe_bootstatus_enabled;
3630 *bs = ixgbe_fcoe_bootstatus_disabled;
3637 * ixgbe_device_supports_autoneg_fc - Check if phy supports autoneg flow
3639 * @hw: pointer to hardware structure
3641 * There are several phys that do not support autoneg flow control. This
3642 * function check the device id to see if the associated phy supports
3643 * autoneg flow control.
3645 static s32 ixgbe_device_supports_autoneg_fc(struct ixgbe_hw *hw)
3648 DEBUGFUNC("ixgbe_device_supports_autoneg_fc");
3650 switch (hw->device_id) {
3651 case IXGBE_DEV_ID_X540T:
3652 return IXGBE_SUCCESS;
3653 case IXGBE_DEV_ID_82599_T3_LOM:
3654 return IXGBE_SUCCESS;
3656 return IXGBE_ERR_FC_NOT_SUPPORTED;
3661 * ixgbe_set_mac_anti_spoofing - Enable/Disable MAC anti-spoofing
3662 * @hw: pointer to hardware structure
3663 * @enable: enable or disable switch for anti-spoofing
3664 * @pf: Physical Function pool - do not enable anti-spoofing for the PF
3667 void ixgbe_set_mac_anti_spoofing(struct ixgbe_hw *hw, bool enable, int pf)
3670 int pf_target_reg = pf >> 3;
3671 int pf_target_shift = pf % 8;
3674 if (hw->mac.type == ixgbe_mac_82598EB)
3678 pfvfspoof = IXGBE_SPOOF_MACAS_MASK;
3681 * PFVFSPOOF register array is size 8 with 8 bits assigned to
3682 * MAC anti-spoof enables in each register array element.
3684 for (j = 0; j < IXGBE_PFVFSPOOF_REG_COUNT; j++)
3685 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(j), pfvfspoof);
3687 /* If not enabling anti-spoofing then done */
3692 * The PF should be allowed to spoof so that it can support
3693 * emulation mode NICs. Reset the bit assigned to the PF
3695 pfvfspoof = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(pf_target_reg));
3696 pfvfspoof ^= (1 << pf_target_shift);
3697 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(pf_target_reg), pfvfspoof);
3701 * ixgbe_set_vlan_anti_spoofing - Enable/Disable VLAN anti-spoofing
3702 * @hw: pointer to hardware structure
3703 * @enable: enable or disable switch for VLAN anti-spoofing
3704 * @pf: Virtual Function pool - VF Pool to set for VLAN anti-spoofing
3707 void ixgbe_set_vlan_anti_spoofing(struct ixgbe_hw *hw, bool enable, int vf)
3709 int vf_target_reg = vf >> 3;
3710 int vf_target_shift = vf % 8 + IXGBE_SPOOF_VLANAS_SHIFT;
3713 if (hw->mac.type == ixgbe_mac_82598EB)
3716 pfvfspoof = IXGBE_READ_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg));
3718 pfvfspoof |= (1 << vf_target_shift);
3720 pfvfspoof &= ~(1 << vf_target_shift);
3721 IXGBE_WRITE_REG(hw, IXGBE_PFVFSPOOF(vf_target_reg), pfvfspoof);
3725 * ixgbe_get_device_caps_generic - Get additional device capabilities
3726 * @hw: pointer to hardware structure
3727 * @device_caps: the EEPROM word with the extra device capabilities
3729 * This function will read the EEPROM location for the device capabilities,
3730 * and return the word through device_caps.
3732 s32 ixgbe_get_device_caps_generic(struct ixgbe_hw *hw, u16 *device_caps)
3734 DEBUGFUNC("ixgbe_get_device_caps_generic");
3736 hw->eeprom.ops.read(hw, IXGBE_DEVICE_CAPS, device_caps);
3738 return IXGBE_SUCCESS;
3742 * ixgbe_enable_relaxed_ordering_gen2 - Enable relaxed ordering
3743 * @hw: pointer to hardware structure
3746 void ixgbe_enable_relaxed_ordering_gen2(struct ixgbe_hw *hw)
3751 DEBUGFUNC("ixgbe_enable_relaxed_ordering_gen2");
3753 /* Enable relaxed ordering */
3754 for (i = 0; i < hw->mac.max_tx_queues; i++) {
3755 regval = IXGBE_READ_REG(hw, IXGBE_DCA_TXCTRL_82599(i));
3756 regval |= IXGBE_DCA_TXCTRL_TX_WB_RO_EN;
3757 IXGBE_WRITE_REG(hw, IXGBE_DCA_TXCTRL_82599(i), regval);
3760 for (i = 0; i < hw->mac.max_rx_queues; i++) {
3761 regval = IXGBE_READ_REG(hw, IXGBE_DCA_RXCTRL(i));
3762 regval |= (IXGBE_DCA_RXCTRL_DESC_WRO_EN |
3763 IXGBE_DCA_RXCTRL_DESC_HSRO_EN);
3764 IXGBE_WRITE_REG(hw, IXGBE_DCA_RXCTRL(i), regval);
3770 * ixgbe_calculate_checksum - Calculate checksum for buffer
3771 * @buffer: pointer to EEPROM
3772 * @length: size of EEPROM to calculate a checksum for
3773 * Calculates the checksum for some buffer on a specified length. The
3774 * checksum calculated is returned.
3776 static u8 ixgbe_calculate_checksum(u8 *buffer, u32 length)
3781 DEBUGFUNC("ixgbe_calculate_checksum");
3786 for (i = 0; i < length; i++)
3789 return (u8) (0 - sum);
3793 * ixgbe_host_interface_command - Issue command to manageability block
3794 * @hw: pointer to the HW structure
3795 * @buffer: contains the command to write and where the return status will
3797 * @lenght: lenght of buffer, must be multiple of 4 bytes
3799 * Communicates with the manageability block. On success return IXGBE_SUCCESS
3800 * else return IXGBE_ERR_HOST_INTERFACE_COMMAND.
3802 static s32 ixgbe_host_interface_command(struct ixgbe_hw *hw, u8 *buffer,
3806 u32 hdr_size = sizeof(struct ixgbe_hic_hdr);
3807 u8 buf_len, dword_len;
3809 s32 ret_val = IXGBE_SUCCESS;
3811 DEBUGFUNC("ixgbe_host_interface_command");
3813 if (length == 0 || length & 0x3 ||
3814 length > IXGBE_HI_MAX_BLOCK_BYTE_LENGTH) {
3815 DEBUGOUT("Buffer length failure.\n");
3816 ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND;
3820 /* Check that the host interface is enabled. */
3821 hicr = IXGBE_READ_REG(hw, IXGBE_HICR);
3822 if ((hicr & IXGBE_HICR_EN) == 0) {
3823 DEBUGOUT("IXGBE_HOST_EN bit disabled.\n");
3824 ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND;
3828 /* Calculate length in DWORDs */
3829 dword_len = length >> 2;
3832 * The device driver writes the relevant command block
3833 * into the ram area.
3835 for (i = 0; i < dword_len; i++)
3836 IXGBE_WRITE_REG_ARRAY(hw, IXGBE_FLEX_MNG,
3837 i, *((u32 *)buffer + i));
3839 /* Setting this bit tells the ARC that a new command is pending. */
3840 IXGBE_WRITE_REG(hw, IXGBE_HICR, hicr | IXGBE_HICR_C);
3842 for (i = 0; i < IXGBE_HI_COMMAND_TIMEOUT; i++) {
3843 hicr = IXGBE_READ_REG(hw, IXGBE_HICR);
3844 if (!(hicr & IXGBE_HICR_C))
3849 /* Check command successful completion. */
3850 if (i == IXGBE_HI_COMMAND_TIMEOUT ||
3851 (!(IXGBE_READ_REG(hw, IXGBE_HICR) & IXGBE_HICR_SV))) {
3852 DEBUGOUT("Command has failed with no status valid.\n");
3853 ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND;
3857 /* Calculate length in DWORDs */
3858 dword_len = hdr_size >> 2;
3860 /* first pull in the header so we know the buffer length */
3861 for (i = 0; i < dword_len; i++)
3862 *((u32 *)buffer + i) =
3863 IXGBE_READ_REG_ARRAY(hw, IXGBE_FLEX_MNG, i);
3865 /* If there is any thing in data position pull it in */
3866 buf_len = ((struct ixgbe_hic_hdr *)buffer)->buf_len;
3870 if (length < (buf_len + hdr_size)) {
3871 DEBUGOUT("Buffer not large enough for reply message.\n");
3872 ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND;
3876 /* Calculate length in DWORDs, add one for odd lengths */
3877 dword_len = (buf_len + 1) >> 2;
3879 /* Pull in the rest of the buffer (i is where we left off)*/
3880 for (; i < buf_len; i++)
3881 *((u32 *)buffer + i) =
3882 IXGBE_READ_REG_ARRAY(hw, IXGBE_FLEX_MNG, i);
3889 * ixgbe_set_fw_drv_ver_generic - Sends driver version to firmware
3890 * @hw: pointer to the HW structure
3891 * @maj: driver version major number
3892 * @min: driver version minor number
3893 * @build: driver version build number
3894 * @sub: driver version sub build number
3896 * Sends driver version number to firmware through the manageability
3897 * block. On success return IXGBE_SUCCESS
3898 * else returns IXGBE_ERR_SWFW_SYNC when encountering an error acquiring
3899 * semaphore or IXGBE_ERR_HOST_INTERFACE_COMMAND when command fails.
3901 s32 ixgbe_set_fw_drv_ver_generic(struct ixgbe_hw *hw, u8 maj, u8 min,
3904 struct ixgbe_hic_drv_info fw_cmd;
3906 s32 ret_val = IXGBE_SUCCESS;
3908 DEBUGFUNC("ixgbe_set_fw_drv_ver_generic");
3910 if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_SW_MNG_SM)
3912 ret_val = IXGBE_ERR_SWFW_SYNC;
3916 fw_cmd.hdr.cmd = FW_CEM_CMD_DRIVER_INFO;
3917 fw_cmd.hdr.buf_len = FW_CEM_CMD_DRIVER_INFO_LEN;
3918 fw_cmd.hdr.cmd_or_resp.cmd_resv = FW_CEM_CMD_RESERVED;
3919 fw_cmd.port_num = (u8)hw->bus.func;
3920 fw_cmd.ver_maj = maj;
3921 fw_cmd.ver_min = min;
3922 fw_cmd.ver_build = build;
3923 fw_cmd.ver_sub = sub;
3924 fw_cmd.hdr.checksum = 0;
3925 fw_cmd.hdr.checksum = ixgbe_calculate_checksum((u8 *)&fw_cmd,
3926 (FW_CEM_HDR_LEN + fw_cmd.hdr.buf_len));
3930 for (i = 0; i <= FW_CEM_MAX_RETRIES; i++) {
3931 ret_val = ixgbe_host_interface_command(hw, (u8 *)&fw_cmd,
3933 if (ret_val != IXGBE_SUCCESS)
3936 if (fw_cmd.hdr.cmd_or_resp.ret_status ==
3937 FW_CEM_RESP_STATUS_SUCCESS)
3938 ret_val = IXGBE_SUCCESS;
3940 ret_val = IXGBE_ERR_HOST_INTERFACE_COMMAND;
3945 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_SW_MNG_SM);
3951 * ixgbe_set_rxpba_generic - Initialize Rx packet buffer
3952 * @hw: pointer to hardware structure
3953 * @num_pb: number of packet buffers to allocate
3954 * @headroom: reserve n KB of headroom
3955 * @strategy: packet buffer allocation strategy
3957 void ixgbe_set_rxpba_generic(struct ixgbe_hw *hw, int num_pb, u32 headroom,
3960 u32 pbsize = hw->mac.rx_pb_size;
3962 u32 rxpktsize, txpktsize, txpbthresh;
3964 /* Reserve headroom */
3970 /* Divide remaining packet buffer space amongst the number of packet
3971 * buffers requested using supplied strategy.
3974 case (PBA_STRATEGY_WEIGHTED):
3975 /* pba_80_48 strategy weight first half of packet buffer with
3976 * 5/8 of the packet buffer space.
3978 rxpktsize = (pbsize * 5 * 2) / (num_pb * 8);
3979 pbsize -= rxpktsize * (num_pb / 2);
3980 rxpktsize <<= IXGBE_RXPBSIZE_SHIFT;
3981 for (; i < (num_pb / 2); i++)
3982 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpktsize);
3983 /* Fall through to configure remaining packet buffers */
3984 case (PBA_STRATEGY_EQUAL):
3985 rxpktsize = (pbsize / (num_pb - i)) << IXGBE_RXPBSIZE_SHIFT;
3986 for (; i < num_pb; i++)
3987 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), rxpktsize);
3993 /* Only support an equally distributed Tx packet buffer strategy. */
3994 txpktsize = IXGBE_TXPBSIZE_MAX / num_pb;
3995 txpbthresh = (txpktsize / 1024) - IXGBE_TXPKT_SIZE_MAX;
3996 for (i = 0; i < num_pb; i++) {
3997 IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), txpktsize);
3998 IXGBE_WRITE_REG(hw, IXGBE_TXPBTHRESH(i), txpbthresh);
4001 /* Clear unused TCs, if any, to zero buffer size*/
4002 for (; i < IXGBE_MAX_PB; i++) {
4003 IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(i), 0);
4004 IXGBE_WRITE_REG(hw, IXGBE_TXPBSIZE(i), 0);
4005 IXGBE_WRITE_REG(hw, IXGBE_TXPBTHRESH(i), 0);
4010 * ixgbe_clear_tx_pending - Clear pending TX work from the PCIe fifo
4011 * @hw: pointer to the hardware structure
4013 * The 82599 and x540 MACs can experience issues if TX work is still pending
4014 * when a reset occurs. This function prevents this by flushing the PCIe
4015 * buffers on the system.
4017 void ixgbe_clear_tx_pending(struct ixgbe_hw *hw)
4019 u32 gcr_ext, hlreg0;
4022 * If double reset is not requested then all transactions should
4023 * already be clear and as such there is no work to do
4025 if (!(hw->mac.flags & IXGBE_FLAGS_DOUBLE_RESET_REQUIRED))
4029 * Set loopback enable to prevent any transmits from being sent
4030 * should the link come up. This assumes that the RXCTRL.RXEN bit
4031 * has already been cleared.
4033 hlreg0 = IXGBE_READ_REG(hw, IXGBE_HLREG0);
4034 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0 | IXGBE_HLREG0_LPBK);
4036 /* initiate cleaning flow for buffers in the PCIe transaction layer */
4037 gcr_ext = IXGBE_READ_REG(hw, IXGBE_GCR_EXT);
4038 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT,
4039 gcr_ext | IXGBE_GCR_EXT_BUFFERS_CLEAR);
4041 /* Flush all writes and allow 20usec for all transactions to clear */
4042 IXGBE_WRITE_FLUSH(hw);
4045 /* restore previous register values */
4046 IXGBE_WRITE_REG(hw, IXGBE_GCR_EXT, gcr_ext);
4047 IXGBE_WRITE_REG(hw, IXGBE_HLREG0, hlreg0);