1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (c) 2015 - 2022 Beijing WangXun Technology Co., Ltd. */
3
4 #include <linux/types.h>
5 #include <linux/module.h>
6 #include <linux/pci.h>
7 #include <linux/netdevice.h>
8 #include <linux/string.h>
9 #include <linux/etherdevice.h>
10 #include <linux/phylink.h>
11 #include <net/ip.h>
12 #include <linux/if_vlan.h>
13
14 #include "../libwx/wx_type.h"
15 #include "../libwx/wx_lib.h"
16 #include "../libwx/wx_hw.h"
17 #include "txgbe_type.h"
18 #include "txgbe_hw.h"
19 #include "txgbe_phy.h"
20 #include "txgbe_irq.h"
21 #include "txgbe_fdir.h"
22 #include "txgbe_ethtool.h"
23
24 char txgbe_driver_name[] = "txgbe";
25
26 /* txgbe_pci_tbl - PCI Device ID Table
27 *
28 * Wildcard entries (PCI_ANY_ID) should come last
29 * Last entry must be all 0s
30 *
31 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
32 * Class, Class Mask, private data (not used) }
33 */
34 static const struct pci_device_id txgbe_pci_tbl[] = {
35 { PCI_VDEVICE(WANGXUN, TXGBE_DEV_ID_SP1000), 0},
36 { PCI_VDEVICE(WANGXUN, TXGBE_DEV_ID_WX1820), 0},
37 /* required last entry */
38 { .device = 0 }
39 };
40
41 #define DEFAULT_DEBUG_LEVEL_SHIFT 3
42
txgbe_check_minimum_link(struct wx * wx)43 static void txgbe_check_minimum_link(struct wx *wx)
44 {
45 struct pci_dev *pdev;
46
47 pdev = wx->pdev;
48 pcie_print_link_status(pdev);
49 }
50
51 /**
52 * txgbe_enumerate_functions - Get the number of ports this device has
53 * @wx: wx structure
54 *
55 * This function enumerates the phsyical functions co-located on a single slot,
56 * in order to determine how many ports a device has. This is most useful in
57 * determining the required GT/s of PCIe bandwidth necessary for optimal
58 * performance.
59 **/
txgbe_enumerate_functions(struct wx * wx)60 static int txgbe_enumerate_functions(struct wx *wx)
61 {
62 struct pci_dev *entry, *pdev = wx->pdev;
63 int physfns = 0;
64
65 list_for_each_entry(entry, &pdev->bus->devices, bus_list) {
66 /* When the devices on the bus don't all match our device ID,
67 * we can't reliably determine the correct number of
68 * functions. This can occur if a function has been direct
69 * attached to a virtual machine using VT-d.
70 */
71 if (entry->vendor != pdev->vendor ||
72 entry->device != pdev->device)
73 return -EINVAL;
74
75 physfns++;
76 }
77
78 return physfns;
79 }
80
txgbe_up_complete(struct wx * wx)81 static void txgbe_up_complete(struct wx *wx)
82 {
83 struct net_device *netdev = wx->netdev;
84
85 wx_control_hw(wx, true);
86 wx_configure_vectors(wx);
87
88 /* make sure to complete pre-operations */
89 smp_mb__before_atomic();
90 wx_napi_enable_all(wx);
91
92 phylink_start(wx->phylink);
93
94 /* clear any pending interrupts, may auto mask */
95 rd32(wx, WX_PX_IC(0));
96 rd32(wx, WX_PX_IC(1));
97 rd32(wx, WX_PX_MISC_IC);
98 txgbe_irq_enable(wx, true);
99
100 /* enable transmits */
101 netif_tx_start_all_queues(netdev);
102 }
103
txgbe_reset(struct wx * wx)104 static void txgbe_reset(struct wx *wx)
105 {
106 struct net_device *netdev = wx->netdev;
107 u8 old_addr[ETH_ALEN];
108 int err;
109
110 err = txgbe_reset_hw(wx);
111 if (err != 0)
112 wx_err(wx, "Hardware Error: %d\n", err);
113
114 wx_start_hw(wx);
115 /* do not flush user set addresses */
116 memcpy(old_addr, &wx->mac_table[0].addr, netdev->addr_len);
117 wx_flush_sw_mac_table(wx);
118 wx_mac_set_default_filter(wx, old_addr);
119 }
120
txgbe_disable_device(struct wx * wx)121 static void txgbe_disable_device(struct wx *wx)
122 {
123 struct net_device *netdev = wx->netdev;
124 u32 i;
125
126 wx_disable_pcie_master(wx);
127 /* disable receives */
128 wx_disable_rx(wx);
129
130 /* disable all enabled rx queues */
131 for (i = 0; i < wx->num_rx_queues; i++)
132 /* this call also flushes the previous write */
133 wx_disable_rx_queue(wx, wx->rx_ring[i]);
134
135 netif_tx_stop_all_queues(netdev);
136 netif_tx_disable(netdev);
137
138 wx_irq_disable(wx);
139 wx_napi_disable_all(wx);
140
141 if (wx->bus.func < 2)
142 wr32m(wx, TXGBE_MIS_PRB_CTL, TXGBE_MIS_PRB_CTL_LAN_UP(wx->bus.func), 0);
143 else
144 wx_err(wx, "%s: invalid bus lan id %d\n",
145 __func__, wx->bus.func);
146
147 if (!(((wx->subsystem_device_id & WX_NCSI_MASK) == WX_NCSI_SUP) ||
148 ((wx->subsystem_device_id & WX_WOL_MASK) == WX_WOL_SUP))) {
149 /* disable mac transmiter */
150 wr32m(wx, WX_MAC_TX_CFG, WX_MAC_TX_CFG_TE, 0);
151 }
152
153 /* disable transmits in the hardware now that interrupts are off */
154 for (i = 0; i < wx->num_tx_queues; i++) {
155 u8 reg_idx = wx->tx_ring[i]->reg_idx;
156
157 wr32(wx, WX_PX_TR_CFG(reg_idx), WX_PX_TR_CFG_SWFLSH);
158 }
159
160 /* Disable the Tx DMA engine */
161 wr32m(wx, WX_TDM_CTL, WX_TDM_CTL_TE, 0);
162
163 wx_update_stats(wx);
164 }
165
txgbe_down(struct wx * wx)166 void txgbe_down(struct wx *wx)
167 {
168 txgbe_disable_device(wx);
169 txgbe_reset(wx);
170 phylink_stop(wx->phylink);
171
172 wx_clean_all_tx_rings(wx);
173 wx_clean_all_rx_rings(wx);
174 }
175
txgbe_up(struct wx * wx)176 void txgbe_up(struct wx *wx)
177 {
178 wx_configure(wx);
179 txgbe_up_complete(wx);
180 }
181
182 /**
183 * txgbe_init_type_code - Initialize the shared code
184 * @wx: pointer to hardware structure
185 **/
txgbe_init_type_code(struct wx * wx)186 static void txgbe_init_type_code(struct wx *wx)
187 {
188 u8 device_type = wx->subsystem_device_id & 0xF0;
189
190 switch (wx->device_id) {
191 case TXGBE_DEV_ID_SP1000:
192 case TXGBE_DEV_ID_WX1820:
193 wx->mac.type = wx_mac_sp;
194 break;
195 default:
196 wx->mac.type = wx_mac_unknown;
197 break;
198 }
199
200 switch (device_type) {
201 case TXGBE_ID_SFP:
202 wx->media_type = sp_media_fiber;
203 break;
204 case TXGBE_ID_XAUI:
205 case TXGBE_ID_SGMII:
206 wx->media_type = sp_media_copper;
207 break;
208 case TXGBE_ID_KR_KX_KX4:
209 case TXGBE_ID_MAC_XAUI:
210 case TXGBE_ID_MAC_SGMII:
211 wx->media_type = sp_media_backplane;
212 break;
213 case TXGBE_ID_SFI_XAUI:
214 if (wx->bus.func == 0)
215 wx->media_type = sp_media_fiber;
216 else
217 wx->media_type = sp_media_copper;
218 break;
219 default:
220 wx->media_type = sp_media_unknown;
221 break;
222 }
223 }
224
225 /**
226 * txgbe_sw_init - Initialize general software structures (struct wx)
227 * @wx: board private structure to initialize
228 **/
txgbe_sw_init(struct wx * wx)229 static int txgbe_sw_init(struct wx *wx)
230 {
231 u16 msix_count = 0;
232 int err;
233
234 wx->mac.num_rar_entries = TXGBE_SP_RAR_ENTRIES;
235 wx->mac.max_tx_queues = TXGBE_SP_MAX_TX_QUEUES;
236 wx->mac.max_rx_queues = TXGBE_SP_MAX_RX_QUEUES;
237 wx->mac.mcft_size = TXGBE_SP_MC_TBL_SIZE;
238 wx->mac.vft_size = TXGBE_SP_VFT_TBL_SIZE;
239 wx->mac.rx_pb_size = TXGBE_SP_RX_PB_SIZE;
240 wx->mac.tx_pb_size = TXGBE_SP_TDB_PB_SZ;
241
242 /* PCI config space info */
243 err = wx_sw_init(wx);
244 if (err < 0)
245 return err;
246
247 txgbe_init_type_code(wx);
248
249 /* Set common capability flags and settings */
250 wx->max_q_vectors = TXGBE_MAX_MSIX_VECTORS;
251 err = wx_get_pcie_msix_counts(wx, &msix_count, TXGBE_MAX_MSIX_VECTORS);
252 if (err)
253 wx_err(wx, "Do not support MSI-X\n");
254 wx->mac.max_msix_vectors = msix_count;
255
256 wx->ring_feature[RING_F_RSS].limit = min_t(int, TXGBE_MAX_RSS_INDICES,
257 num_online_cpus());
258 wx->rss_enabled = true;
259
260 wx->ring_feature[RING_F_FDIR].limit = min_t(int, TXGBE_MAX_FDIR_INDICES,
261 num_online_cpus());
262 set_bit(WX_FLAG_FDIR_CAPABLE, wx->flags);
263 set_bit(WX_FLAG_FDIR_HASH, wx->flags);
264 wx->atr_sample_rate = TXGBE_DEFAULT_ATR_SAMPLE_RATE;
265 wx->atr = txgbe_atr;
266 wx->configure_fdir = txgbe_configure_fdir;
267
268 /* enable itr by default in dynamic mode */
269 wx->rx_itr_setting = 1;
270 wx->tx_itr_setting = 1;
271
272 /* set default ring sizes */
273 wx->tx_ring_count = TXGBE_DEFAULT_TXD;
274 wx->rx_ring_count = TXGBE_DEFAULT_RXD;
275
276 /* set default work limits */
277 wx->tx_work_limit = TXGBE_DEFAULT_TX_WORK;
278 wx->rx_work_limit = TXGBE_DEFAULT_RX_WORK;
279
280 wx->do_reset = txgbe_do_reset;
281
282 return 0;
283 }
284
txgbe_init_fdir(struct txgbe * txgbe)285 static void txgbe_init_fdir(struct txgbe *txgbe)
286 {
287 txgbe->fdir_filter_count = 0;
288 spin_lock_init(&txgbe->fdir_perfect_lock);
289 }
290
291 /**
292 * txgbe_open - Called when a network interface is made active
293 * @netdev: network interface device structure
294 *
295 * Returns 0 on success, negative value on failure
296 *
297 * The open entry point is called when a network interface is made
298 * active by the system (IFF_UP).
299 **/
txgbe_open(struct net_device * netdev)300 static int txgbe_open(struct net_device *netdev)
301 {
302 struct wx *wx = netdev_priv(netdev);
303 int err;
304
305 err = wx_setup_resources(wx);
306 if (err)
307 goto err_reset;
308
309 wx_configure(wx);
310
311 err = txgbe_setup_misc_irq(wx->priv);
312 if (err)
313 goto err_free_resources;
314
315 err = txgbe_request_queue_irqs(wx);
316 if (err)
317 goto err_free_misc_irq;
318
319 /* Notify the stack of the actual queue counts. */
320 err = netif_set_real_num_tx_queues(netdev, wx->num_tx_queues);
321 if (err)
322 goto err_free_irq;
323
324 err = netif_set_real_num_rx_queues(netdev, wx->num_rx_queues);
325 if (err)
326 goto err_free_irq;
327
328 txgbe_up_complete(wx);
329
330 return 0;
331
332 err_free_irq:
333 wx_free_irq(wx);
334 err_free_misc_irq:
335 txgbe_free_misc_irq(wx->priv);
336 wx_reset_interrupt_capability(wx);
337 err_free_resources:
338 wx_free_resources(wx);
339 err_reset:
340 txgbe_reset(wx);
341
342 return err;
343 }
344
345 /**
346 * txgbe_close_suspend - actions necessary to both suspend and close flows
347 * @wx: the private wx struct
348 *
349 * This function should contain the necessary work common to both suspending
350 * and closing of the device.
351 */
txgbe_close_suspend(struct wx * wx)352 static void txgbe_close_suspend(struct wx *wx)
353 {
354 txgbe_disable_device(wx);
355 wx_free_resources(wx);
356 }
357
358 /**
359 * txgbe_close - Disables a network interface
360 * @netdev: network interface device structure
361 *
362 * Returns 0, this is not allowed to fail
363 *
364 * The close entry point is called when an interface is de-activated
365 * by the OS. The hardware is still under the drivers control, but
366 * needs to be disabled. A global MAC reset is issued to stop the
367 * hardware, and all transmit and receive resources are freed.
368 **/
txgbe_close(struct net_device * netdev)369 static int txgbe_close(struct net_device *netdev)
370 {
371 struct wx *wx = netdev_priv(netdev);
372
373 txgbe_down(wx);
374 wx_free_irq(wx);
375 txgbe_free_misc_irq(wx->priv);
376 wx_free_resources(wx);
377 txgbe_fdir_filter_exit(wx);
378 wx_control_hw(wx, false);
379
380 return 0;
381 }
382
txgbe_dev_shutdown(struct pci_dev * pdev)383 static void txgbe_dev_shutdown(struct pci_dev *pdev)
384 {
385 struct wx *wx = pci_get_drvdata(pdev);
386 struct net_device *netdev;
387
388 netdev = wx->netdev;
389 netif_device_detach(netdev);
390
391 rtnl_lock();
392 if (netif_running(netdev))
393 txgbe_close_suspend(wx);
394 rtnl_unlock();
395
396 wx_control_hw(wx, false);
397
398 pci_disable_device(pdev);
399 }
400
txgbe_shutdown(struct pci_dev * pdev)401 static void txgbe_shutdown(struct pci_dev *pdev)
402 {
403 txgbe_dev_shutdown(pdev);
404
405 if (system_state == SYSTEM_POWER_OFF) {
406 pci_wake_from_d3(pdev, false);
407 pci_set_power_state(pdev, PCI_D3hot);
408 }
409 }
410
411 /**
412 * txgbe_setup_tc - routine to configure net_device for multiple traffic
413 * classes.
414 *
415 * @dev: net device to configure
416 * @tc: number of traffic classes to enable
417 */
txgbe_setup_tc(struct net_device * dev,u8 tc)418 int txgbe_setup_tc(struct net_device *dev, u8 tc)
419 {
420 struct wx *wx = netdev_priv(dev);
421
422 /* Hardware has to reinitialize queues and interrupts to
423 * match packet buffer alignment. Unfortunately, the
424 * hardware is not flexible enough to do this dynamically.
425 */
426 if (netif_running(dev))
427 txgbe_close(dev);
428 else
429 txgbe_reset(wx);
430
431 wx_clear_interrupt_scheme(wx);
432
433 if (tc)
434 netdev_set_num_tc(dev, tc);
435 else
436 netdev_reset_tc(dev);
437
438 wx_init_interrupt_scheme(wx);
439
440 if (netif_running(dev))
441 txgbe_open(dev);
442
443 return 0;
444 }
445
txgbe_reinit_locked(struct wx * wx)446 static void txgbe_reinit_locked(struct wx *wx)
447 {
448 int err = 0;
449
450 netif_trans_update(wx->netdev);
451
452 err = wx_set_state_reset(wx);
453 if (err) {
454 wx_err(wx, "wait device reset timeout\n");
455 return;
456 }
457
458 txgbe_down(wx);
459 txgbe_up(wx);
460
461 clear_bit(WX_STATE_RESETTING, wx->state);
462 }
463
txgbe_do_reset(struct net_device * netdev)464 void txgbe_do_reset(struct net_device *netdev)
465 {
466 struct wx *wx = netdev_priv(netdev);
467
468 if (netif_running(netdev))
469 txgbe_reinit_locked(wx);
470 else
471 txgbe_reset(wx);
472 }
473
474 static const struct net_device_ops txgbe_netdev_ops = {
475 .ndo_open = txgbe_open,
476 .ndo_stop = txgbe_close,
477 .ndo_change_mtu = wx_change_mtu,
478 .ndo_start_xmit = wx_xmit_frame,
479 .ndo_set_rx_mode = wx_set_rx_mode,
480 .ndo_set_features = wx_set_features,
481 .ndo_fix_features = wx_fix_features,
482 .ndo_validate_addr = eth_validate_addr,
483 .ndo_set_mac_address = wx_set_mac,
484 .ndo_get_stats64 = wx_get_stats64,
485 .ndo_vlan_rx_add_vid = wx_vlan_rx_add_vid,
486 .ndo_vlan_rx_kill_vid = wx_vlan_rx_kill_vid,
487 };
488
489 /**
490 * txgbe_probe - Device Initialization Routine
491 * @pdev: PCI device information struct
492 * @ent: entry in txgbe_pci_tbl
493 *
494 * Returns 0 on success, negative on failure
495 *
496 * txgbe_probe initializes an adapter identified by a pci_dev structure.
497 * The OS initialization, configuring of the wx private structure,
498 * and a hardware reset occur.
499 **/
txgbe_probe(struct pci_dev * pdev,const struct pci_device_id __always_unused * ent)500 static int txgbe_probe(struct pci_dev *pdev,
501 const struct pci_device_id __always_unused *ent)
502 {
503 struct net_device *netdev;
504 int err, expected_gts;
505 struct wx *wx = NULL;
506 struct txgbe *txgbe;
507
508 u16 eeprom_verh = 0, eeprom_verl = 0, offset = 0;
509 u16 eeprom_cfg_blkh = 0, eeprom_cfg_blkl = 0;
510 u16 build = 0, major = 0, patch = 0;
511 u32 etrack_id = 0;
512
513 err = pci_enable_device_mem(pdev);
514 if (err)
515 return err;
516
517 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
518 if (err) {
519 dev_err(&pdev->dev,
520 "No usable DMA configuration, aborting\n");
521 goto err_pci_disable_dev;
522 }
523
524 err = pci_request_selected_regions(pdev,
525 pci_select_bars(pdev, IORESOURCE_MEM),
526 txgbe_driver_name);
527 if (err) {
528 dev_err(&pdev->dev,
529 "pci_request_selected_regions failed 0x%x\n", err);
530 goto err_pci_disable_dev;
531 }
532
533 pci_set_master(pdev);
534
535 netdev = devm_alloc_etherdev_mqs(&pdev->dev,
536 sizeof(struct wx),
537 TXGBE_MAX_TX_QUEUES,
538 TXGBE_MAX_RX_QUEUES);
539 if (!netdev) {
540 err = -ENOMEM;
541 goto err_pci_release_regions;
542 }
543
544 SET_NETDEV_DEV(netdev, &pdev->dev);
545
546 wx = netdev_priv(netdev);
547 wx->netdev = netdev;
548 wx->pdev = pdev;
549
550 wx->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1;
551
552 wx->hw_addr = devm_ioremap(&pdev->dev,
553 pci_resource_start(pdev, 0),
554 pci_resource_len(pdev, 0));
555 if (!wx->hw_addr) {
556 err = -EIO;
557 goto err_pci_release_regions;
558 }
559
560 wx->driver_name = txgbe_driver_name;
561 txgbe_set_ethtool_ops(netdev);
562 netdev->netdev_ops = &txgbe_netdev_ops;
563
564 /* setup the private structure */
565 err = txgbe_sw_init(wx);
566 if (err)
567 goto err_pci_release_regions;
568
569 /* check if flash load is done after hw power up */
570 err = wx_check_flash_load(wx, TXGBE_SPI_ILDR_STATUS_PERST);
571 if (err)
572 goto err_free_mac_table;
573 err = wx_check_flash_load(wx, TXGBE_SPI_ILDR_STATUS_PWRRST);
574 if (err)
575 goto err_free_mac_table;
576
577 err = wx_mng_present(wx);
578 if (err) {
579 dev_err(&pdev->dev, "Management capability is not present\n");
580 goto err_free_mac_table;
581 }
582
583 err = txgbe_reset_hw(wx);
584 if (err) {
585 dev_err(&pdev->dev, "HW Init failed: %d\n", err);
586 goto err_free_mac_table;
587 }
588
589 netdev->features = NETIF_F_SG |
590 NETIF_F_TSO |
591 NETIF_F_TSO6 |
592 NETIF_F_RXHASH |
593 NETIF_F_RXCSUM |
594 NETIF_F_HW_CSUM;
595
596 netdev->gso_partial_features = NETIF_F_GSO_ENCAP_ALL;
597 netdev->features |= netdev->gso_partial_features;
598 netdev->features |= NETIF_F_SCTP_CRC;
599 netdev->vlan_features |= netdev->features | NETIF_F_TSO_MANGLEID;
600 netdev->hw_enc_features |= netdev->vlan_features;
601 netdev->features |= NETIF_F_VLAN_FEATURES;
602 /* copy netdev features into list of user selectable features */
603 netdev->hw_features |= netdev->features | NETIF_F_RXALL;
604 netdev->hw_features |= NETIF_F_NTUPLE | NETIF_F_HW_TC;
605 netdev->features |= NETIF_F_HIGHDMA;
606 netdev->hw_features |= NETIF_F_GRO;
607 netdev->features |= NETIF_F_GRO;
608
609 netdev->priv_flags |= IFF_UNICAST_FLT;
610 netdev->priv_flags |= IFF_SUPP_NOFCS;
611 netdev->priv_flags |= IFF_LIVE_ADDR_CHANGE;
612
613 netdev->min_mtu = ETH_MIN_MTU;
614 netdev->max_mtu = WX_MAX_JUMBO_FRAME_SIZE -
615 (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN);
616
617 /* make sure the EEPROM is good */
618 err = txgbe_validate_eeprom_checksum(wx, NULL);
619 if (err != 0) {
620 dev_err(&pdev->dev, "The EEPROM Checksum Is Not Valid\n");
621 wr32(wx, WX_MIS_RST, WX_MIS_RST_SW_RST);
622 err = -EIO;
623 goto err_free_mac_table;
624 }
625
626 eth_hw_addr_set(netdev, wx->mac.perm_addr);
627 wx_mac_set_default_filter(wx, wx->mac.perm_addr);
628
629 err = wx_init_interrupt_scheme(wx);
630 if (err)
631 goto err_free_mac_table;
632
633 /* Save off EEPROM version number and Option Rom version which
634 * together make a unique identify for the eeprom
635 */
636 wx_read_ee_hostif(wx,
637 wx->eeprom.sw_region_offset + TXGBE_EEPROM_VERSION_H,
638 &eeprom_verh);
639 wx_read_ee_hostif(wx,
640 wx->eeprom.sw_region_offset + TXGBE_EEPROM_VERSION_L,
641 &eeprom_verl);
642 etrack_id = (eeprom_verh << 16) | eeprom_verl;
643
644 wx_read_ee_hostif(wx,
645 wx->eeprom.sw_region_offset + TXGBE_ISCSI_BOOT_CONFIG,
646 &offset);
647
648 /* Make sure offset to SCSI block is valid */
649 if (!(offset == 0x0) && !(offset == 0xffff)) {
650 wx_read_ee_hostif(wx, offset + 0x84, &eeprom_cfg_blkh);
651 wx_read_ee_hostif(wx, offset + 0x83, &eeprom_cfg_blkl);
652
653 /* Only display Option Rom if exist */
654 if (eeprom_cfg_blkl && eeprom_cfg_blkh) {
655 major = eeprom_cfg_blkl >> 8;
656 build = (eeprom_cfg_blkl << 8) | (eeprom_cfg_blkh >> 8);
657 patch = eeprom_cfg_blkh & 0x00ff;
658
659 snprintf(wx->eeprom_id, sizeof(wx->eeprom_id),
660 "0x%08x, %d.%d.%d", etrack_id, major, build,
661 patch);
662 } else {
663 snprintf(wx->eeprom_id, sizeof(wx->eeprom_id),
664 "0x%08x", etrack_id);
665 }
666 } else {
667 snprintf(wx->eeprom_id, sizeof(wx->eeprom_id),
668 "0x%08x", etrack_id);
669 }
670
671 if (etrack_id < 0x20010)
672 dev_warn(&pdev->dev, "Please upgrade the firmware to 0x20010 or above.\n");
673
674 txgbe = devm_kzalloc(&pdev->dev, sizeof(*txgbe), GFP_KERNEL);
675 if (!txgbe) {
676 err = -ENOMEM;
677 goto err_release_hw;
678 }
679
680 txgbe->wx = wx;
681 wx->priv = txgbe;
682
683 txgbe_init_fdir(txgbe);
684
685 err = txgbe_init_phy(txgbe);
686 if (err)
687 goto err_release_hw;
688
689 err = register_netdev(netdev);
690 if (err)
691 goto err_remove_phy;
692
693 pci_set_drvdata(pdev, wx);
694
695 netif_tx_stop_all_queues(netdev);
696
697 /* calculate the expected PCIe bandwidth required for optimal
698 * performance. Note that some older parts will never have enough
699 * bandwidth due to being older generation PCIe parts. We clamp these
700 * parts to ensure that no warning is displayed, as this could confuse
701 * users otherwise.
702 */
703 expected_gts = txgbe_enumerate_functions(wx) * 10;
704
705 /* don't check link if we failed to enumerate functions */
706 if (expected_gts > 0)
707 txgbe_check_minimum_link(wx);
708 else
709 dev_warn(&pdev->dev, "Failed to enumerate PF devices.\n");
710
711 return 0;
712
713 err_remove_phy:
714 txgbe_remove_phy(txgbe);
715 err_release_hw:
716 wx_clear_interrupt_scheme(wx);
717 wx_control_hw(wx, false);
718 err_free_mac_table:
719 kfree(wx->rss_key);
720 kfree(wx->mac_table);
721 err_pci_release_regions:
722 pci_release_selected_regions(pdev,
723 pci_select_bars(pdev, IORESOURCE_MEM));
724 err_pci_disable_dev:
725 pci_disable_device(pdev);
726 return err;
727 }
728
729 /**
730 * txgbe_remove - Device Removal Routine
731 * @pdev: PCI device information struct
732 *
733 * txgbe_remove is called by the PCI subsystem to alert the driver
734 * that it should release a PCI device. The could be caused by a
735 * Hot-Plug event, or because the driver is going to be removed from
736 * memory.
737 **/
txgbe_remove(struct pci_dev * pdev)738 static void txgbe_remove(struct pci_dev *pdev)
739 {
740 struct wx *wx = pci_get_drvdata(pdev);
741 struct txgbe *txgbe = wx->priv;
742 struct net_device *netdev;
743
744 netdev = wx->netdev;
745 unregister_netdev(netdev);
746
747 txgbe_remove_phy(txgbe);
748 wx_free_isb_resources(wx);
749
750 pci_release_selected_regions(pdev,
751 pci_select_bars(pdev, IORESOURCE_MEM));
752
753 kfree(wx->rss_key);
754 kfree(wx->mac_table);
755 wx_clear_interrupt_scheme(wx);
756
757 pci_disable_device(pdev);
758 }
759
760 static struct pci_driver txgbe_driver = {
761 .name = txgbe_driver_name,
762 .id_table = txgbe_pci_tbl,
763 .probe = txgbe_probe,
764 .remove = txgbe_remove,
765 .shutdown = txgbe_shutdown,
766 };
767
768 module_pci_driver(txgbe_driver);
769
770 MODULE_DEVICE_TABLE(pci, txgbe_pci_tbl);
771 MODULE_AUTHOR("Beijing WangXun Technology Co., Ltd, <software@trustnetic.com>");
772 MODULE_DESCRIPTION("WangXun(R) 10 Gigabit PCI Express Network Driver");
773 MODULE_LICENSE("GPL");
774