ixgbe: move to drivers/net/
[dpdk.git] / drivers / net / ixgbe / base / ixgbe_x540.c
1 /*******************************************************************************
2
3 Copyright (c) 2001-2014, Intel Corporation
4 All rights reserved.
5
6 Redistribution and use in source and binary forms, with or without
7 modification, are permitted provided that the following conditions are met:
8
9  1. Redistributions of source code must retain the above copyright notice,
10     this list of conditions and the following disclaimer.
11
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.
15
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.
19
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.
31
32 ***************************************************************************/
33
34 #include "ixgbe_x540.h"
35 #include "ixgbe_type.h"
36 #include "ixgbe_api.h"
37 #include "ixgbe_common.h"
38 #include "ixgbe_phy.h"
39
40 #define IXGBE_X540_MAX_TX_QUEUES        128
41 #define IXGBE_X540_MAX_RX_QUEUES        128
42 #define IXGBE_X540_RAR_ENTRIES          128
43 #define IXGBE_X540_MC_TBL_SIZE          128
44 #define IXGBE_X540_VFT_TBL_SIZE         128
45 #define IXGBE_X540_RX_PB_SIZE           384
46
47 STATIC s32 ixgbe_poll_flash_update_done_X540(struct ixgbe_hw *hw);
48 STATIC s32 ixgbe_get_swfw_sync_semaphore(struct ixgbe_hw *hw);
49 STATIC void ixgbe_release_swfw_sync_semaphore(struct ixgbe_hw *hw);
50
51 /**
52  *  ixgbe_init_ops_X540 - Inits func ptrs and MAC type
53  *  @hw: pointer to hardware structure
54  *
55  *  Initialize the function pointers and assign the MAC type for X540.
56  *  Does not touch the hardware.
57  **/
58 s32 ixgbe_init_ops_X540(struct ixgbe_hw *hw)
59 {
60         struct ixgbe_mac_info *mac = &hw->mac;
61         struct ixgbe_phy_info *phy = &hw->phy;
62         struct ixgbe_eeprom_info *eeprom = &hw->eeprom;
63         s32 ret_val;
64
65         DEBUGFUNC("ixgbe_init_ops_X540");
66
67         ret_val = ixgbe_init_phy_ops_generic(hw);
68         ret_val = ixgbe_init_ops_generic(hw);
69
70
71         /* EEPROM */
72         eeprom->ops.init_params = ixgbe_init_eeprom_params_X540;
73         eeprom->ops.read = ixgbe_read_eerd_X540;
74         eeprom->ops.read_buffer = ixgbe_read_eerd_buffer_X540;
75         eeprom->ops.write = ixgbe_write_eewr_X540;
76         eeprom->ops.write_buffer = ixgbe_write_eewr_buffer_X540;
77         eeprom->ops.update_checksum = ixgbe_update_eeprom_checksum_X540;
78         eeprom->ops.validate_checksum = ixgbe_validate_eeprom_checksum_X540;
79         eeprom->ops.calc_checksum = ixgbe_calc_eeprom_checksum_X540;
80
81         /* PHY */
82         phy->ops.init = ixgbe_init_phy_ops_generic;
83         phy->ops.reset = NULL;
84         if (!ixgbe_mng_present(hw))
85                 phy->ops.set_phy_power = ixgbe_set_copper_phy_power;
86
87         /* MAC */
88         mac->ops.reset_hw = ixgbe_reset_hw_X540;
89         mac->ops.enable_relaxed_ordering = ixgbe_enable_relaxed_ordering_gen2;
90         mac->ops.get_media_type = ixgbe_get_media_type_X540;
91         mac->ops.get_supported_physical_layer =
92                                     ixgbe_get_supported_physical_layer_X540;
93         mac->ops.read_analog_reg8 = NULL;
94         mac->ops.write_analog_reg8 = NULL;
95         mac->ops.start_hw = ixgbe_start_hw_X540;
96         mac->ops.get_san_mac_addr = ixgbe_get_san_mac_addr_generic;
97         mac->ops.set_san_mac_addr = ixgbe_set_san_mac_addr_generic;
98         mac->ops.get_device_caps = ixgbe_get_device_caps_generic;
99         mac->ops.get_wwn_prefix = ixgbe_get_wwn_prefix_generic;
100         mac->ops.get_fcoe_boot_status = ixgbe_get_fcoe_boot_status_generic;
101         mac->ops.acquire_swfw_sync = ixgbe_acquire_swfw_sync_X540;
102         mac->ops.release_swfw_sync = ixgbe_release_swfw_sync_X540;
103         mac->ops.disable_sec_rx_path = ixgbe_disable_sec_rx_path_generic;
104         mac->ops.enable_sec_rx_path = ixgbe_enable_sec_rx_path_generic;
105
106         /* RAR, Multicast, VLAN */
107         mac->ops.set_vmdq = ixgbe_set_vmdq_generic;
108         mac->ops.set_vmdq_san_mac = ixgbe_set_vmdq_san_mac_generic;
109         mac->ops.clear_vmdq = ixgbe_clear_vmdq_generic;
110         mac->ops.insert_mac_addr = ixgbe_insert_mac_addr_generic;
111         mac->rar_highwater = 1;
112         mac->ops.set_vfta = ixgbe_set_vfta_generic;
113         mac->ops.set_vlvf = ixgbe_set_vlvf_generic;
114         mac->ops.clear_vfta = ixgbe_clear_vfta_generic;
115         mac->ops.init_uta_tables = ixgbe_init_uta_tables_generic;
116         mac->ops.set_mac_anti_spoofing = ixgbe_set_mac_anti_spoofing;
117         mac->ops.set_vlan_anti_spoofing = ixgbe_set_vlan_anti_spoofing;
118
119         /* Link */
120         mac->ops.get_link_capabilities =
121                                 ixgbe_get_copper_link_capabilities_generic;
122         mac->ops.setup_link = ixgbe_setup_mac_link_X540;
123         mac->ops.setup_rxpba = ixgbe_set_rxpba_generic;
124         mac->ops.check_link = ixgbe_check_mac_link_generic;
125
126
127         mac->mcft_size          = IXGBE_X540_MC_TBL_SIZE;
128         mac->vft_size           = IXGBE_X540_VFT_TBL_SIZE;
129         mac->num_rar_entries    = IXGBE_X540_RAR_ENTRIES;
130         mac->rx_pb_size         = IXGBE_X540_RX_PB_SIZE;
131         mac->max_rx_queues      = IXGBE_X540_MAX_RX_QUEUES;
132         mac->max_tx_queues      = IXGBE_X540_MAX_TX_QUEUES;
133         mac->max_msix_vectors   = ixgbe_get_pcie_msix_count_generic(hw);
134
135         /*
136          * FWSM register
137          * ARC supported; valid only if manageability features are
138          * enabled.
139          */
140         mac->arc_subsystem_valid = (IXGBE_READ_REG(hw, IXGBE_FWSM) &
141                                    IXGBE_FWSM_MODE_MASK) ? true : false;
142
143         hw->mbx.ops.init_params = ixgbe_init_mbx_params_pf;
144
145         /* LEDs */
146         mac->ops.blink_led_start = ixgbe_blink_led_start_X540;
147         mac->ops.blink_led_stop = ixgbe_blink_led_stop_X540;
148
149         /* Manageability interface */
150         mac->ops.set_fw_drv_ver = ixgbe_set_fw_drv_ver_generic;
151
152         mac->ops.get_rtrup2tc = ixgbe_dcb_get_rtrup2tc_generic;
153
154         return ret_val;
155 }
156
157 /**
158  *  ixgbe_get_link_capabilities_X540 - Determines link capabilities
159  *  @hw: pointer to hardware structure
160  *  @speed: pointer to link speed
161  *  @autoneg: true when autoneg or autotry is enabled
162  *
163  *  Determines the link capabilities by reading the AUTOC register.
164  **/
165 s32 ixgbe_get_link_capabilities_X540(struct ixgbe_hw *hw,
166                                      ixgbe_link_speed *speed,
167                                      bool *autoneg)
168 {
169         ixgbe_get_copper_link_capabilities_generic(hw, speed, autoneg);
170
171         return IXGBE_SUCCESS;
172 }
173
174 /**
175  *  ixgbe_get_media_type_X540 - Get media type
176  *  @hw: pointer to hardware structure
177  *
178  *  Returns the media type (fiber, copper, backplane)
179  **/
180 enum ixgbe_media_type ixgbe_get_media_type_X540(struct ixgbe_hw *hw)
181 {
182         UNREFERENCED_1PARAMETER(hw);
183         return ixgbe_media_type_copper;
184 }
185
186 /**
187  *  ixgbe_setup_mac_link_X540 - Sets the auto advertised capabilities
188  *  @hw: pointer to hardware structure
189  *  @speed: new link speed
190  *  @autoneg_wait_to_complete: true when waiting for completion is needed
191  **/
192 s32 ixgbe_setup_mac_link_X540(struct ixgbe_hw *hw,
193                               ixgbe_link_speed speed,
194                               bool autoneg_wait_to_complete)
195 {
196         DEBUGFUNC("ixgbe_setup_mac_link_X540");
197         return hw->phy.ops.setup_link_speed(hw, speed, autoneg_wait_to_complete);
198 }
199
200 /**
201  *  ixgbe_reset_hw_X540 - Perform hardware reset
202  *  @hw: pointer to hardware structure
203  *
204  *  Resets the hardware by resetting the transmit and receive units, masks
205  *  and clears all interrupts, and perform a reset.
206  **/
207 s32 ixgbe_reset_hw_X540(struct ixgbe_hw *hw)
208 {
209         s32 status;
210         u32 ctrl, i;
211
212         DEBUGFUNC("ixgbe_reset_hw_X540");
213
214         /* Call adapter stop to disable tx/rx and clear interrupts */
215         status = hw->mac.ops.stop_adapter(hw);
216         if (status != IXGBE_SUCCESS)
217                 goto reset_hw_out;
218
219         /* flush pending Tx transactions */
220         ixgbe_clear_tx_pending(hw);
221
222 mac_reset_top:
223         ctrl = IXGBE_CTRL_RST;
224         ctrl |= IXGBE_READ_REG(hw, IXGBE_CTRL);
225         IXGBE_WRITE_REG(hw, IXGBE_CTRL, ctrl);
226         IXGBE_WRITE_FLUSH(hw);
227
228         /* Poll for reset bit to self-clear indicating reset is complete */
229         for (i = 0; i < 10; i++) {
230                 usec_delay(1);
231                 ctrl = IXGBE_READ_REG(hw, IXGBE_CTRL);
232                 if (!(ctrl & IXGBE_CTRL_RST_MASK))
233                         break;
234         }
235
236         if (ctrl & IXGBE_CTRL_RST_MASK) {
237                 status = IXGBE_ERR_RESET_FAILED;
238                 ERROR_REPORT1(IXGBE_ERROR_POLLING,
239                              "Reset polling failed to complete.\n");
240         }
241         msec_delay(100);
242
243         /*
244          * Double resets are required for recovery from certain error
245          * conditions.  Between resets, it is necessary to stall to allow time
246          * for any pending HW events to complete.
247          */
248         if (hw->mac.flags & IXGBE_FLAGS_DOUBLE_RESET_REQUIRED) {
249                 hw->mac.flags &= ~IXGBE_FLAGS_DOUBLE_RESET_REQUIRED;
250                 goto mac_reset_top;
251         }
252
253         /* Set the Rx packet buffer size. */
254         IXGBE_WRITE_REG(hw, IXGBE_RXPBSIZE(0), 384 << IXGBE_RXPBSIZE_SHIFT);
255
256         /* Store the permanent mac address */
257         hw->mac.ops.get_mac_addr(hw, hw->mac.perm_addr);
258
259         /*
260          * Store MAC address from RAR0, clear receive address registers, and
261          * clear the multicast table.  Also reset num_rar_entries to 128,
262          * since we modify this value when programming the SAN MAC address.
263          */
264         hw->mac.num_rar_entries = 128;
265         hw->mac.ops.init_rx_addrs(hw);
266
267         /* Store the permanent SAN mac address */
268         hw->mac.ops.get_san_mac_addr(hw, hw->mac.san_addr);
269
270         /* Add the SAN MAC address to the RAR only if it's a valid address */
271         if (ixgbe_validate_mac_addr(hw->mac.san_addr) == 0) {
272                 hw->mac.ops.set_rar(hw, hw->mac.num_rar_entries - 1,
273                                     hw->mac.san_addr, 0, IXGBE_RAH_AV);
274
275                 /* Save the SAN MAC RAR index */
276                 hw->mac.san_mac_rar_index = hw->mac.num_rar_entries - 1;
277
278                 /* Reserve the last RAR for the SAN MAC address */
279                 hw->mac.num_rar_entries--;
280         }
281
282         /* Store the alternative WWNN/WWPN prefix */
283         hw->mac.ops.get_wwn_prefix(hw, &hw->mac.wwnn_prefix,
284                                    &hw->mac.wwpn_prefix);
285
286 reset_hw_out:
287         return status;
288 }
289
290 /**
291  *  ixgbe_start_hw_X540 - Prepare hardware for Tx/Rx
292  *  @hw: pointer to hardware structure
293  *
294  *  Starts the hardware using the generic start_hw function
295  *  and the generation start_hw function.
296  *  Then performs revision-specific operations, if any.
297  **/
298 s32 ixgbe_start_hw_X540(struct ixgbe_hw *hw)
299 {
300         s32 ret_val = IXGBE_SUCCESS;
301
302         DEBUGFUNC("ixgbe_start_hw_X540");
303
304         ret_val = ixgbe_start_hw_generic(hw);
305         if (ret_val != IXGBE_SUCCESS)
306                 goto out;
307
308         ret_val = ixgbe_start_hw_gen2(hw);
309
310 out:
311         return ret_val;
312 }
313
314 /**
315  *  ixgbe_get_supported_physical_layer_X540 - Returns physical layer type
316  *  @hw: pointer to hardware structure
317  *
318  *  Determines physical layer capabilities of the current configuration.
319  **/
320 u32 ixgbe_get_supported_physical_layer_X540(struct ixgbe_hw *hw)
321 {
322         u32 physical_layer = IXGBE_PHYSICAL_LAYER_UNKNOWN;
323         u16 ext_ability = 0;
324
325         DEBUGFUNC("ixgbe_get_supported_physical_layer_X540");
326
327         hw->phy.ops.read_reg(hw, IXGBE_MDIO_PHY_EXT_ABILITY,
328         IXGBE_MDIO_PMA_PMD_DEV_TYPE, &ext_ability);
329         if (ext_ability & IXGBE_MDIO_PHY_10GBASET_ABILITY)
330                 physical_layer |= IXGBE_PHYSICAL_LAYER_10GBASE_T;
331         if (ext_ability & IXGBE_MDIO_PHY_1000BASET_ABILITY)
332                 physical_layer |= IXGBE_PHYSICAL_LAYER_1000BASE_T;
333         if (ext_ability & IXGBE_MDIO_PHY_100BASETX_ABILITY)
334                 physical_layer |= IXGBE_PHYSICAL_LAYER_100BASE_TX;
335
336         return physical_layer;
337 }
338
339 /**
340  *  ixgbe_init_eeprom_params_X540 - Initialize EEPROM params
341  *  @hw: pointer to hardware structure
342  *
343  *  Initializes the EEPROM parameters ixgbe_eeprom_info within the
344  *  ixgbe_hw struct in order to set up EEPROM access.
345  **/
346 s32 ixgbe_init_eeprom_params_X540(struct ixgbe_hw *hw)
347 {
348         struct ixgbe_eeprom_info *eeprom = &hw->eeprom;
349         u32 eec;
350         u16 eeprom_size;
351
352         DEBUGFUNC("ixgbe_init_eeprom_params_X540");
353
354         if (eeprom->type == ixgbe_eeprom_uninitialized) {
355                 eeprom->semaphore_delay = 10;
356                 eeprom->type = ixgbe_flash;
357
358                 eec = IXGBE_READ_REG(hw, IXGBE_EEC);
359                 eeprom_size = (u16)((eec & IXGBE_EEC_SIZE) >>
360                                     IXGBE_EEC_SIZE_SHIFT);
361                 eeprom->word_size = 1 << (eeprom_size +
362                                           IXGBE_EEPROM_WORD_SIZE_SHIFT);
363
364                 DEBUGOUT2("Eeprom params: type = %d, size = %d\n",
365                           eeprom->type, eeprom->word_size);
366         }
367
368         return IXGBE_SUCCESS;
369 }
370
371 /**
372  *  ixgbe_read_eerd_X540- Read EEPROM word using EERD
373  *  @hw: pointer to hardware structure
374  *  @offset: offset of  word in the EEPROM to read
375  *  @data: word read from the EEPROM
376  *
377  *  Reads a 16 bit word from the EEPROM using the EERD register.
378  **/
379 s32 ixgbe_read_eerd_X540(struct ixgbe_hw *hw, u16 offset, u16 *data)
380 {
381         s32 status = IXGBE_SUCCESS;
382
383         DEBUGFUNC("ixgbe_read_eerd_X540");
384         if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM) ==
385             IXGBE_SUCCESS) {
386                 status = ixgbe_read_eerd_generic(hw, offset, data);
387                 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
388         } else {
389                 status = IXGBE_ERR_SWFW_SYNC;
390         }
391
392         return status;
393 }
394
395 /**
396  *  ixgbe_read_eerd_buffer_X540- Read EEPROM word(s) using EERD
397  *  @hw: pointer to hardware structure
398  *  @offset: offset of  word in the EEPROM to read
399  *  @words: number of words
400  *  @data: word(s) read from the EEPROM
401  *
402  *  Reads a 16 bit word(s) from the EEPROM using the EERD register.
403  **/
404 s32 ixgbe_read_eerd_buffer_X540(struct ixgbe_hw *hw,
405                                 u16 offset, u16 words, u16 *data)
406 {
407         s32 status = IXGBE_SUCCESS;
408
409         DEBUGFUNC("ixgbe_read_eerd_buffer_X540");
410         if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM) ==
411             IXGBE_SUCCESS) {
412                 status = ixgbe_read_eerd_buffer_generic(hw, offset,
413                                                         words, data);
414                 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
415         } else {
416                 status = IXGBE_ERR_SWFW_SYNC;
417         }
418
419         return status;
420 }
421
422 /**
423  *  ixgbe_write_eewr_X540 - Write EEPROM word using EEWR
424  *  @hw: pointer to hardware structure
425  *  @offset: offset of  word in the EEPROM to write
426  *  @data: word write to the EEPROM
427  *
428  *  Write a 16 bit word to the EEPROM using the EEWR register.
429  **/
430 s32 ixgbe_write_eewr_X540(struct ixgbe_hw *hw, u16 offset, u16 data)
431 {
432         s32 status = IXGBE_SUCCESS;
433
434         DEBUGFUNC("ixgbe_write_eewr_X540");
435         if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM) ==
436             IXGBE_SUCCESS) {
437                 status = ixgbe_write_eewr_generic(hw, offset, data);
438                 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
439         } else {
440                 status = IXGBE_ERR_SWFW_SYNC;
441         }
442
443         return status;
444 }
445
446 /**
447  *  ixgbe_write_eewr_buffer_X540 - Write EEPROM word(s) using EEWR
448  *  @hw: pointer to hardware structure
449  *  @offset: offset of  word in the EEPROM to write
450  *  @words: number of words
451  *  @data: word(s) write to the EEPROM
452  *
453  *  Write a 16 bit word(s) to the EEPROM using the EEWR register.
454  **/
455 s32 ixgbe_write_eewr_buffer_X540(struct ixgbe_hw *hw,
456                                  u16 offset, u16 words, u16 *data)
457 {
458         s32 status = IXGBE_SUCCESS;
459
460         DEBUGFUNC("ixgbe_write_eewr_buffer_X540");
461         if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM) ==
462             IXGBE_SUCCESS) {
463                 status = ixgbe_write_eewr_buffer_generic(hw, offset,
464                                                          words, data);
465                 hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
466         } else {
467                 status = IXGBE_ERR_SWFW_SYNC;
468         }
469
470         return status;
471 }
472
473 /**
474  *  ixgbe_calc_eeprom_checksum_X540 - Calculates and returns the checksum
475  *
476  *  This function does not use synchronization for EERD and EEWR. It can
477  *  be used internally by function which utilize ixgbe_acquire_swfw_sync_X540.
478  *
479  *  @hw: pointer to hardware structure
480  *
481  *  Returns a negative error code on error, or the 16-bit checksum
482  **/
483 s32 ixgbe_calc_eeprom_checksum_X540(struct ixgbe_hw *hw)
484 {
485         u16 i, j;
486         u16 checksum = 0;
487         u16 length = 0;
488         u16 pointer = 0;
489         u16 word = 0;
490         u16 checksum_last_word = IXGBE_EEPROM_CHECKSUM;
491         u16 ptr_start = IXGBE_PCIE_ANALOG_PTR;
492
493         /* Do not use hw->eeprom.ops.read because we do not want to take
494          * the synchronization semaphores here. Instead use
495          * ixgbe_read_eerd_generic
496          */
497
498         DEBUGFUNC("ixgbe_calc_eeprom_checksum_X540");
499
500         /* Include 0x0-0x3F in the checksum */
501         for (i = 0; i <= checksum_last_word; i++) {
502                 if (ixgbe_read_eerd_generic(hw, i, &word)) {
503                         DEBUGOUT("EEPROM read failed\n");
504                         return IXGBE_ERR_EEPROM;
505                 }
506                 if (i != IXGBE_EEPROM_CHECKSUM)
507                         checksum += word;
508         }
509
510         /* Include all data from pointers 0x3, 0x6-0xE.  This excludes the
511          * FW, PHY module, and PCIe Expansion/Option ROM pointers.
512          */
513         for (i = ptr_start; i < IXGBE_FW_PTR; i++) {
514                 if (i == IXGBE_PHY_PTR || i == IXGBE_OPTION_ROM_PTR)
515                         continue;
516
517                 if (ixgbe_read_eerd_generic(hw, i, &pointer)) {
518                         DEBUGOUT("EEPROM read failed\n");
519                         return IXGBE_ERR_EEPROM;
520                 }
521
522                 /* Skip pointer section if the pointer is invalid. */
523                 if (pointer == 0xFFFF || pointer == 0 ||
524                     pointer >= hw->eeprom.word_size)
525                         continue;
526
527                 if (ixgbe_read_eerd_generic(hw, pointer, &length)) {
528                         DEBUGOUT("EEPROM read failed\n");
529                         return IXGBE_ERR_EEPROM;
530                 }
531
532                 /* Skip pointer section if length is invalid. */
533                 if (length == 0xFFFF || length == 0 ||
534                     (pointer + length) >= hw->eeprom.word_size)
535                         continue;
536
537                 for (j = pointer + 1; j <= pointer + length; j++) {
538                         if (ixgbe_read_eerd_generic(hw, j, &word)) {
539                                 DEBUGOUT("EEPROM read failed\n");
540                                 return IXGBE_ERR_EEPROM;
541                         }
542                         checksum += word;
543                 }
544         }
545
546         checksum = (u16)IXGBE_EEPROM_SUM - checksum;
547
548         return (s32)checksum;
549 }
550
551 /**
552  *  ixgbe_validate_eeprom_checksum_X540 - Validate EEPROM checksum
553  *  @hw: pointer to hardware structure
554  *  @checksum_val: calculated checksum
555  *
556  *  Performs checksum calculation and validates the EEPROM checksum.  If the
557  *  caller does not need checksum_val, the value can be NULL.
558  **/
559 s32 ixgbe_validate_eeprom_checksum_X540(struct ixgbe_hw *hw,
560                                         u16 *checksum_val)
561 {
562         s32 status;
563         u16 checksum;
564         u16 read_checksum = 0;
565
566         DEBUGFUNC("ixgbe_validate_eeprom_checksum_X540");
567
568         /* Read the first word from the EEPROM. If this times out or fails, do
569          * not continue or we could be in for a very long wait while every
570          * EEPROM read fails
571          */
572         status = hw->eeprom.ops.read(hw, 0, &checksum);
573         if (status) {
574                 DEBUGOUT("EEPROM read failed\n");
575                 return status;
576         }
577
578         if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM))
579                 return IXGBE_ERR_SWFW_SYNC;
580
581         status = hw->eeprom.ops.calc_checksum(hw);
582         if (status < 0)
583                 goto out;
584
585         checksum = (u16)(status & 0xffff);
586
587         /* Do not use hw->eeprom.ops.read because we do not want to take
588          * the synchronization semaphores twice here.
589          */
590         status = ixgbe_read_eerd_generic(hw, IXGBE_EEPROM_CHECKSUM,
591                                          &read_checksum);
592         if (status)
593                 goto out;
594
595         /* Verify read checksum from EEPROM is the same as
596          * calculated checksum
597          */
598         if (read_checksum != checksum) {
599                 ERROR_REPORT1(IXGBE_ERROR_INVALID_STATE,
600                              "Invalid EEPROM checksum");
601                 status = IXGBE_ERR_EEPROM_CHECKSUM;
602         }
603
604         /* If the user cares, return the calculated checksum */
605         if (checksum_val)
606                 *checksum_val = checksum;
607
608 out:
609         hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
610
611         return status;
612 }
613
614 /**
615  * ixgbe_update_eeprom_checksum_X540 - Updates the EEPROM checksum and flash
616  * @hw: pointer to hardware structure
617  *
618  * After writing EEPROM to shadow RAM using EEWR register, software calculates
619  * checksum and updates the EEPROM and instructs the hardware to update
620  * the flash.
621  **/
622 s32 ixgbe_update_eeprom_checksum_X540(struct ixgbe_hw *hw)
623 {
624         s32 status;
625         u16 checksum;
626
627         DEBUGFUNC("ixgbe_update_eeprom_checksum_X540");
628
629         /* Read the first word from the EEPROM. If this times out or fails, do
630          * not continue or we could be in for a very long wait while every
631          * EEPROM read fails
632          */
633         status = hw->eeprom.ops.read(hw, 0, &checksum);
634         if (status) {
635                 DEBUGOUT("EEPROM read failed\n");
636                 return status;
637         }
638
639         if (hw->mac.ops.acquire_swfw_sync(hw, IXGBE_GSSR_EEP_SM))
640                 return IXGBE_ERR_SWFW_SYNC;
641
642         status = hw->eeprom.ops.calc_checksum(hw);
643         if (status < 0)
644                 goto out;
645
646         checksum = (u16)(status & 0xffff);
647
648         /* Do not use hw->eeprom.ops.write because we do not want to
649          * take the synchronization semaphores twice here.
650          */
651         status = ixgbe_write_eewr_generic(hw, IXGBE_EEPROM_CHECKSUM, checksum);
652         if (status)
653                 goto out;
654
655         status = ixgbe_update_flash_X540(hw);
656
657 out:
658         hw->mac.ops.release_swfw_sync(hw, IXGBE_GSSR_EEP_SM);
659
660         return status;
661 }
662
663 /**
664  *  ixgbe_update_flash_X540 - Instruct HW to copy EEPROM to Flash device
665  *  @hw: pointer to hardware structure
666  *
667  *  Set FLUP (bit 23) of the EEC register to instruct Hardware to copy
668  *  EEPROM from shadow RAM to the flash device.
669  **/
670 s32 ixgbe_update_flash_X540(struct ixgbe_hw *hw)
671 {
672         u32 flup;
673         s32 status;
674
675         DEBUGFUNC("ixgbe_update_flash_X540");
676
677         status = ixgbe_poll_flash_update_done_X540(hw);
678         if (status == IXGBE_ERR_EEPROM) {
679                 DEBUGOUT("Flash update time out\n");
680                 goto out;
681         }
682
683         flup = IXGBE_READ_REG(hw, IXGBE_EEC) | IXGBE_EEC_FLUP;
684         IXGBE_WRITE_REG(hw, IXGBE_EEC, flup);
685
686         status = ixgbe_poll_flash_update_done_X540(hw);
687         if (status == IXGBE_SUCCESS)
688                 DEBUGOUT("Flash update complete\n");
689         else
690                 DEBUGOUT("Flash update time out\n");
691
692         if (hw->mac.type == ixgbe_mac_X540 && hw->revision_id == 0) {
693                 flup = IXGBE_READ_REG(hw, IXGBE_EEC);
694
695                 if (flup & IXGBE_EEC_SEC1VAL) {
696                         flup |= IXGBE_EEC_FLUP;
697                         IXGBE_WRITE_REG(hw, IXGBE_EEC, flup);
698                 }
699
700                 status = ixgbe_poll_flash_update_done_X540(hw);
701                 if (status == IXGBE_SUCCESS)
702                         DEBUGOUT("Flash update complete\n");
703                 else
704                         DEBUGOUT("Flash update time out\n");
705         }
706 out:
707         return status;
708 }
709
710 /**
711  *  ixgbe_poll_flash_update_done_X540 - Poll flash update status
712  *  @hw: pointer to hardware structure
713  *
714  *  Polls the FLUDONE (bit 26) of the EEC Register to determine when the
715  *  flash update is done.
716  **/
717 STATIC s32 ixgbe_poll_flash_update_done_X540(struct ixgbe_hw *hw)
718 {
719         u32 i;
720         u32 reg;
721         s32 status = IXGBE_ERR_EEPROM;
722
723         DEBUGFUNC("ixgbe_poll_flash_update_done_X540");
724
725         for (i = 0; i < IXGBE_FLUDONE_ATTEMPTS; i++) {
726                 reg = IXGBE_READ_REG(hw, IXGBE_EEC);
727                 if (reg & IXGBE_EEC_FLUDONE) {
728                         status = IXGBE_SUCCESS;
729                         break;
730                 }
731                 msec_delay(5);
732         }
733
734         if (i == IXGBE_FLUDONE_ATTEMPTS)
735                 ERROR_REPORT1(IXGBE_ERROR_POLLING,
736                              "Flash update status polling timed out");
737
738         return status;
739 }
740
741 /**
742  * ixgbe_set_mux - Set mux for port 1 access with CS4227
743  * @hw: pointer to hardware structure
744  * @state: set mux if 1, clear if 0
745  */
746 STATIC void ixgbe_set_mux(struct ixgbe_hw *hw, u8 state)
747 {
748         u32 esdp;
749
750         if (!hw->bus.lan_id)
751                 return;
752         esdp = IXGBE_READ_REG(hw, IXGBE_ESDP);
753         if (state)
754                 esdp |= IXGBE_ESDP_SDP1;
755         else
756                 esdp &= ~IXGBE_ESDP_SDP1;
757         IXGBE_WRITE_REG(hw, IXGBE_ESDP, esdp);
758         IXGBE_WRITE_FLUSH(hw);
759 }
760
761 /**
762  *  ixgbe_acquire_swfw_sync_X540 - Acquire SWFW semaphore
763  *  @hw: pointer to hardware structure
764  *  @mask: Mask to specify which semaphore to acquire
765  *
766  *  Acquires the SWFW semaphore thought the SW_FW_SYNC register for
767  *  the specified function (CSR, PHY0, PHY1, NVM, Flash)
768  **/
769 s32 ixgbe_acquire_swfw_sync_X540(struct ixgbe_hw *hw, u32 mask)
770 {
771         u32 swmask = mask & IXGBE_GSSR_NVM_PHY_MASK;
772         u32 fwmask = swmask << 5;
773         u32 swi2c_mask = mask & IXGBE_GSSR_I2C_MASK;
774         u32 timeout = 200;
775         u32 hwmask = 0;
776         u32 swfw_sync;
777         u32 i;
778
779         DEBUGFUNC("ixgbe_acquire_swfw_sync_X540");
780
781         if (swmask & IXGBE_GSSR_EEP_SM)
782                 hwmask |= IXGBE_GSSR_FLASH_SM;
783
784         /* SW only mask doesn't have FW bit pair */
785         if (mask & IXGBE_GSSR_SW_MNG_SM)
786                 swmask |= IXGBE_GSSR_SW_MNG_SM;
787
788         swmask |= swi2c_mask;
789         fwmask |= swi2c_mask << 2;
790         for (i = 0; i < timeout; i++) {
791                 /* SW NVM semaphore bit is used for access to all
792                  * SW_FW_SYNC bits (not just NVM)
793                  */
794                 if (ixgbe_get_swfw_sync_semaphore(hw))
795                         return IXGBE_ERR_SWFW_SYNC;
796
797                 swfw_sync = IXGBE_READ_REG(hw, IXGBE_SWFW_SYNC);
798                 if (!(swfw_sync & (fwmask | swmask | hwmask))) {
799                         swfw_sync |= swmask;
800                         IXGBE_WRITE_REG(hw, IXGBE_SWFW_SYNC, swfw_sync);
801                         ixgbe_release_swfw_sync_semaphore(hw);
802                         msec_delay(5);
803                         if (swi2c_mask)
804                                 ixgbe_set_mux(hw, 1);
805                         return IXGBE_SUCCESS;
806                 }
807                 /* Firmware currently using resource (fwmask), hardware
808                  * currently using resource (hwmask), or other software
809                  * thread currently using resource (swmask)
810                  */
811                 ixgbe_release_swfw_sync_semaphore(hw);
812                 msec_delay(5);
813         }
814
815         /* Failed to get SW only semaphore */
816         if (swmask == IXGBE_GSSR_SW_MNG_SM) {
817                 ERROR_REPORT1(IXGBE_ERROR_POLLING,
818                              "Failed to get SW only semaphore");
819                 return IXGBE_ERR_SWFW_SYNC;
820         }
821
822         /* If the resource is not released by the FW/HW the SW can assume that
823          * the FW/HW malfunctions. In that case the SW should set the SW bit(s)
824          * of the requested resource(s) while ignoring the corresponding FW/HW
825          * bits in the SW_FW_SYNC register.
826          */
827         if (ixgbe_get_swfw_sync_semaphore(hw))
828                 return IXGBE_ERR_SWFW_SYNC;
829         swfw_sync = IXGBE_READ_REG(hw, IXGBE_SWFW_SYNC);
830         if (swfw_sync & (fwmask | hwmask)) {
831                 swfw_sync |= swmask;
832                 IXGBE_WRITE_REG(hw, IXGBE_SWFW_SYNC, swfw_sync);
833                 ixgbe_release_swfw_sync_semaphore(hw);
834                 msec_delay(5);
835                 if (swi2c_mask)
836                         ixgbe_set_mux(hw, 1);
837                 return IXGBE_SUCCESS;
838         }
839         /* If the resource is not released by other SW the SW can assume that
840          * the other SW malfunctions. In that case the SW should clear all SW
841          * flags that it does not own and then repeat the whole process once
842          * again.
843          */
844         if (swfw_sync & swmask) {
845                 u32 rmask = IXGBE_GSSR_EEP_SM | IXGBE_GSSR_PHY0_SM |
846                             IXGBE_GSSR_PHY1_SM | IXGBE_GSSR_MAC_CSR_SM;
847
848                 if (swi2c_mask)
849                         rmask |= IXGBE_GSSR_I2C_MASK;
850                 ixgbe_release_swfw_sync_X540(hw, rmask);
851                 ixgbe_release_swfw_sync_semaphore(hw);
852                 return IXGBE_ERR_SWFW_SYNC;
853         }
854         ixgbe_release_swfw_sync_semaphore(hw);
855
856         return IXGBE_ERR_SWFW_SYNC;
857 }
858
859 /**
860  *  ixgbe_release_swfw_sync_X540 - Release SWFW semaphore
861  *  @hw: pointer to hardware structure
862  *  @mask: Mask to specify which semaphore to release
863  *
864  *  Releases the SWFW semaphore through the SW_FW_SYNC register
865  *  for the specified function (CSR, PHY0, PHY1, EVM, Flash)
866  **/
867 void ixgbe_release_swfw_sync_X540(struct ixgbe_hw *hw, u32 mask)
868 {
869         u32 swmask = mask & (IXGBE_GSSR_NVM_PHY_MASK | IXGBE_GSSR_SW_MNG_SM);
870         u32 swfw_sync;
871
872         DEBUGFUNC("ixgbe_release_swfw_sync_X540");
873
874         if (mask & IXGBE_GSSR_I2C_MASK) {
875                 swmask |= mask & IXGBE_GSSR_I2C_MASK;
876                 ixgbe_set_mux(hw, 0);
877         }
878         ixgbe_get_swfw_sync_semaphore(hw);
879
880         swfw_sync = IXGBE_READ_REG(hw, IXGBE_SWFW_SYNC);
881         swfw_sync &= ~swmask;
882         IXGBE_WRITE_REG(hw, IXGBE_SWFW_SYNC, swfw_sync);
883
884         ixgbe_release_swfw_sync_semaphore(hw);
885         msec_delay(5);
886 }
887
888 /**
889  *  ixgbe_get_swfw_sync_semaphore - Get hardware semaphore
890  *  @hw: pointer to hardware structure
891  *
892  *  Sets the hardware semaphores so SW/FW can gain control of shared resources
893  **/
894 STATIC s32 ixgbe_get_swfw_sync_semaphore(struct ixgbe_hw *hw)
895 {
896         s32 status = IXGBE_ERR_EEPROM;
897         u32 timeout = 2000;
898         u32 i;
899         u32 swsm;
900
901         DEBUGFUNC("ixgbe_get_swfw_sync_semaphore");
902
903         /* Get SMBI software semaphore between device drivers first */
904         for (i = 0; i < timeout; i++) {
905                 /*
906                  * If the SMBI bit is 0 when we read it, then the bit will be
907                  * set and we have the semaphore
908                  */
909                 swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
910                 if (!(swsm & IXGBE_SWSM_SMBI)) {
911                         status = IXGBE_SUCCESS;
912                         break;
913                 }
914                 usec_delay(50);
915         }
916
917         /* Now get the semaphore between SW/FW through the REGSMP bit */
918         if (status == IXGBE_SUCCESS) {
919                 for (i = 0; i < timeout; i++) {
920                         swsm = IXGBE_READ_REG(hw, IXGBE_SWFW_SYNC);
921                         if (!(swsm & IXGBE_SWFW_REGSMP))
922                                 break;
923
924                         usec_delay(50);
925                 }
926
927                 /*
928                  * Release semaphores and return error if SW NVM semaphore
929                  * was not granted because we don't have access to the EEPROM
930                  */
931                 if (i >= timeout) {
932                         ERROR_REPORT1(IXGBE_ERROR_POLLING,
933                                 "REGSMP Software NVM semaphore not granted.\n");
934                         ixgbe_release_swfw_sync_semaphore(hw);
935                         status = IXGBE_ERR_EEPROM;
936                 }
937         } else {
938                 ERROR_REPORT1(IXGBE_ERROR_POLLING,
939                              "Software semaphore SMBI between device drivers "
940                              "not granted.\n");
941         }
942
943         return status;
944 }
945
946 /**
947  *  ixgbe_release_swfw_sync_semaphore - Release hardware semaphore
948  *  @hw: pointer to hardware structure
949  *
950  *  This function clears hardware semaphore bits.
951  **/
952 STATIC void ixgbe_release_swfw_sync_semaphore(struct ixgbe_hw *hw)
953 {
954         u32 swsm;
955
956         DEBUGFUNC("ixgbe_release_swfw_sync_semaphore");
957
958         /* Release both semaphores by writing 0 to the bits REGSMP and SMBI */
959
960         swsm = IXGBE_READ_REG(hw, IXGBE_SWSM);
961         swsm &= ~IXGBE_SWSM_SMBI;
962         IXGBE_WRITE_REG(hw, IXGBE_SWSM, swsm);
963
964         swsm = IXGBE_READ_REG(hw, IXGBE_SWFW_SYNC);
965         swsm &= ~IXGBE_SWFW_REGSMP;
966         IXGBE_WRITE_REG(hw, IXGBE_SWFW_SYNC, swsm);
967
968         IXGBE_WRITE_FLUSH(hw);
969 }
970
971 /**
972  * ixgbe_blink_led_start_X540 - Blink LED based on index.
973  * @hw: pointer to hardware structure
974  * @index: led number to blink
975  *
976  * Devices that implement the version 2 interface:
977  *   X540
978  **/
979 s32 ixgbe_blink_led_start_X540(struct ixgbe_hw *hw, u32 index)
980 {
981         u32 macc_reg;
982         u32 ledctl_reg;
983         ixgbe_link_speed speed;
984         bool link_up;
985
986         DEBUGFUNC("ixgbe_blink_led_start_X540");
987
988         /*
989          * Link should be up in order for the blink bit in the LED control
990          * register to work. Force link and speed in the MAC if link is down.
991          * This will be reversed when we stop the blinking.
992          */
993         hw->mac.ops.check_link(hw, &speed, &link_up, false);
994         if (link_up == false) {
995                 macc_reg = IXGBE_READ_REG(hw, IXGBE_MACC);
996                 macc_reg |= IXGBE_MACC_FLU | IXGBE_MACC_FSV_10G | IXGBE_MACC_FS;
997                 IXGBE_WRITE_REG(hw, IXGBE_MACC, macc_reg);
998         }
999         /* Set the LED to LINK_UP + BLINK. */
1000         ledctl_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
1001         ledctl_reg &= ~IXGBE_LED_MODE_MASK(index);
1002         ledctl_reg |= IXGBE_LED_BLINK(index);
1003         IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, ledctl_reg);
1004         IXGBE_WRITE_FLUSH(hw);
1005
1006         return IXGBE_SUCCESS;
1007 }
1008
1009 /**
1010  * ixgbe_blink_led_stop_X540 - Stop blinking LED based on index.
1011  * @hw: pointer to hardware structure
1012  * @index: led number to stop blinking
1013  *
1014  * Devices that implement the version 2 interface:
1015  *   X540
1016  **/
1017 s32 ixgbe_blink_led_stop_X540(struct ixgbe_hw *hw, u32 index)
1018 {
1019         u32 macc_reg;
1020         u32 ledctl_reg;
1021
1022         DEBUGFUNC("ixgbe_blink_led_stop_X540");
1023
1024         /* Restore the LED to its default value. */
1025         ledctl_reg = IXGBE_READ_REG(hw, IXGBE_LEDCTL);
1026         ledctl_reg &= ~IXGBE_LED_MODE_MASK(index);
1027         ledctl_reg |= IXGBE_LED_LINK_ACTIVE << IXGBE_LED_MODE_SHIFT(index);
1028         ledctl_reg &= ~IXGBE_LED_BLINK(index);
1029         IXGBE_WRITE_REG(hw, IXGBE_LEDCTL, ledctl_reg);
1030
1031         /* Unforce link and speed in the MAC. */
1032         macc_reg = IXGBE_READ_REG(hw, IXGBE_MACC);
1033         macc_reg &= ~(IXGBE_MACC_FLU | IXGBE_MACC_FSV_10G | IXGBE_MACC_FS);
1034         IXGBE_WRITE_REG(hw, IXGBE_MACC, macc_reg);
1035         IXGBE_WRITE_FLUSH(hw);
1036
1037         return IXGBE_SUCCESS;
1038 }
1039
1040