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_ethtool.h"
21
22 char txgbe_driver_name[] = "txgbe";
23
24 /* txgbe_pci_tbl - PCI Device ID Table
25 *
26 * Wildcard entries (PCI_ANY_ID) should come last
27 * Last entry must be all 0s
28 *
29 * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
30 * Class, Class Mask, private data (not used) }
31 */
32 static const struct pci_device_id txgbe_pci_tbl[] = {
33 { PCI_VDEVICE(WANGXUN, TXGBE_DEV_ID_SP1000), 0},
34 { PCI_VDEVICE(WANGXUN, TXGBE_DEV_ID_WX1820), 0},
35 /* required last entry */
36 { .device = 0 }
37 };
38
39 #define DEFAULT_DEBUG_LEVEL_SHIFT 3
40
txgbe_check_minimum_link(struct wx * wx)41 static void txgbe_check_minimum_link(struct wx *wx)
42 {
43 struct pci_dev *pdev;
44
45 pdev = wx->pdev;
46 pcie_print_link_status(pdev);
47 }
48
49 /**
50 * txgbe_enumerate_functions - Get the number of ports this device has
51 * @wx: wx structure
52 *
53 * This function enumerates the phsyical functions co-located on a single slot,
54 * in order to determine how many ports a device has. This is most useful in
55 * determining the required GT/s of PCIe bandwidth necessary for optimal
56 * performance.
57 **/
txgbe_enumerate_functions(struct wx * wx)58 static int txgbe_enumerate_functions(struct wx *wx)
59 {
60 struct pci_dev *entry, *pdev = wx->pdev;
61 int physfns = 0;
62
63 list_for_each_entry(entry, &pdev->bus->devices, bus_list) {
64 /* When the devices on the bus don't all match our device ID,
65 * we can't reliably determine the correct number of
66 * functions. This can occur if a function has been direct
67 * attached to a virtual machine using VT-d.
68 */
69 if (entry->vendor != pdev->vendor ||
70 entry->device != pdev->device)
71 return -EINVAL;
72
73 physfns++;
74 }
75
76 return physfns;
77 }
78
79 /**
80 * txgbe_irq_enable - Enable default interrupt generation settings
81 * @wx: pointer to private structure
82 * @queues: enable irqs for queues
83 **/
txgbe_irq_enable(struct wx * wx,bool queues)84 static void txgbe_irq_enable(struct wx *wx, bool queues)
85 {
86 wr32(wx, WX_PX_MISC_IEN, TXGBE_PX_MISC_IEN_MASK);
87
88 /* unmask interrupt */
89 wx_intr_enable(wx, TXGBE_INTR_MISC(wx));
90 if (queues)
91 wx_intr_enable(wx, TXGBE_INTR_QALL(wx));
92 }
93
94 /**
95 * txgbe_intr - msi/legacy mode Interrupt Handler
96 * @irq: interrupt number
97 * @data: pointer to a network interface device structure
98 **/
txgbe_intr(int __always_unused irq,void * data)99 static irqreturn_t txgbe_intr(int __always_unused irq, void *data)
100 {
101 struct wx_q_vector *q_vector;
102 struct wx *wx = data;
103 struct pci_dev *pdev;
104 u32 eicr;
105
106 q_vector = wx->q_vector[0];
107 pdev = wx->pdev;
108
109 eicr = wx_misc_isb(wx, WX_ISB_VEC0);
110 if (!eicr) {
111 /* shared interrupt alert!
112 * the interrupt that we masked before the ICR read.
113 */
114 if (netif_running(wx->netdev))
115 txgbe_irq_enable(wx, true);
116 return IRQ_NONE; /* Not our interrupt */
117 }
118 wx->isb_mem[WX_ISB_VEC0] = 0;
119 if (!(pdev->msi_enabled))
120 wr32(wx, WX_PX_INTA, 1);
121
122 wx->isb_mem[WX_ISB_MISC] = 0;
123 /* would disable interrupts here but it is auto disabled */
124 napi_schedule_irqoff(&q_vector->napi);
125
126 /* re-enable link(maybe) and non-queue interrupts, no flush.
127 * txgbe_poll will re-enable the queue interrupts
128 */
129 if (netif_running(wx->netdev))
130 txgbe_irq_enable(wx, false);
131
132 return IRQ_HANDLED;
133 }
134
135 /**
136 * txgbe_request_msix_irqs - Initialize MSI-X interrupts
137 * @wx: board private structure
138 *
139 * Allocate MSI-X vectors and request interrupts from the kernel.
140 **/
txgbe_request_msix_irqs(struct wx * wx)141 static int txgbe_request_msix_irqs(struct wx *wx)
142 {
143 struct net_device *netdev = wx->netdev;
144 int vector, err;
145
146 for (vector = 0; vector < wx->num_q_vectors; vector++) {
147 struct wx_q_vector *q_vector = wx->q_vector[vector];
148 struct msix_entry *entry = &wx->msix_entries[vector];
149
150 if (q_vector->tx.ring && q_vector->rx.ring)
151 snprintf(q_vector->name, sizeof(q_vector->name) - 1,
152 "%s-TxRx-%d", netdev->name, entry->entry);
153 else
154 /* skip this unused q_vector */
155 continue;
156
157 err = request_irq(entry->vector, wx_msix_clean_rings, 0,
158 q_vector->name, q_vector);
159 if (err) {
160 wx_err(wx, "request_irq failed for MSIX interrupt %s Error: %d\n",
161 q_vector->name, err);
162 goto free_queue_irqs;
163 }
164 }
165
166 return 0;
167
168 free_queue_irqs:
169 while (vector) {
170 vector--;
171 free_irq(wx->msix_entries[vector].vector,
172 wx->q_vector[vector]);
173 }
174 wx_reset_interrupt_capability(wx);
175 return err;
176 }
177
178 /**
179 * txgbe_request_irq - initialize interrupts
180 * @wx: board private structure
181 *
182 * Attempt to configure interrupts using the best available
183 * capabilities of the hardware and kernel.
184 **/
txgbe_request_irq(struct wx * wx)185 static int txgbe_request_irq(struct wx *wx)
186 {
187 struct net_device *netdev = wx->netdev;
188 struct pci_dev *pdev = wx->pdev;
189 int err;
190
191 if (pdev->msix_enabled)
192 err = txgbe_request_msix_irqs(wx);
193 else if (pdev->msi_enabled)
194 err = request_irq(wx->pdev->irq, &txgbe_intr, 0,
195 netdev->name, wx);
196 else
197 err = request_irq(wx->pdev->irq, &txgbe_intr, IRQF_SHARED,
198 netdev->name, wx);
199
200 if (err)
201 wx_err(wx, "request_irq failed, Error %d\n", err);
202
203 return err;
204 }
205
txgbe_up_complete(struct wx * wx)206 static void txgbe_up_complete(struct wx *wx)
207 {
208 struct net_device *netdev = wx->netdev;
209 struct txgbe *txgbe;
210
211 wx_control_hw(wx, true);
212 wx_configure_vectors(wx);
213
214 /* make sure to complete pre-operations */
215 smp_mb__before_atomic();
216 wx_napi_enable_all(wx);
217
218 txgbe = netdev_to_txgbe(netdev);
219 phylink_start(txgbe->phylink);
220
221 /* clear any pending interrupts, may auto mask */
222 rd32(wx, WX_PX_IC(0));
223 rd32(wx, WX_PX_IC(1));
224 rd32(wx, WX_PX_MISC_IC);
225 txgbe_irq_enable(wx, true);
226
227 /* enable transmits */
228 netif_tx_start_all_queues(netdev);
229 }
230
txgbe_reset(struct wx * wx)231 static void txgbe_reset(struct wx *wx)
232 {
233 struct net_device *netdev = wx->netdev;
234 u8 old_addr[ETH_ALEN];
235 int err;
236
237 err = txgbe_reset_hw(wx);
238 if (err != 0)
239 wx_err(wx, "Hardware Error: %d\n", err);
240
241 wx_start_hw(wx);
242 /* do not flush user set addresses */
243 memcpy(old_addr, &wx->mac_table[0].addr, netdev->addr_len);
244 wx_flush_sw_mac_table(wx);
245 wx_mac_set_default_filter(wx, old_addr);
246 }
247
txgbe_disable_device(struct wx * wx)248 static void txgbe_disable_device(struct wx *wx)
249 {
250 struct net_device *netdev = wx->netdev;
251 u32 i;
252
253 wx_disable_pcie_master(wx);
254 /* disable receives */
255 wx_disable_rx(wx);
256
257 /* disable all enabled rx queues */
258 for (i = 0; i < wx->num_rx_queues; i++)
259 /* this call also flushes the previous write */
260 wx_disable_rx_queue(wx, wx->rx_ring[i]);
261
262 netif_tx_stop_all_queues(netdev);
263 netif_tx_disable(netdev);
264
265 wx_irq_disable(wx);
266 wx_napi_disable_all(wx);
267
268 if (wx->bus.func < 2)
269 wr32m(wx, TXGBE_MIS_PRB_CTL, TXGBE_MIS_PRB_CTL_LAN_UP(wx->bus.func), 0);
270 else
271 wx_err(wx, "%s: invalid bus lan id %d\n",
272 __func__, wx->bus.func);
273
274 if (!(((wx->subsystem_device_id & WX_NCSI_MASK) == WX_NCSI_SUP) ||
275 ((wx->subsystem_device_id & WX_WOL_MASK) == WX_WOL_SUP))) {
276 /* disable mac transmiter */
277 wr32m(wx, WX_MAC_TX_CFG, WX_MAC_TX_CFG_TE, 0);
278 }
279
280 /* disable transmits in the hardware now that interrupts are off */
281 for (i = 0; i < wx->num_tx_queues; i++) {
282 u8 reg_idx = wx->tx_ring[i]->reg_idx;
283
284 wr32(wx, WX_PX_TR_CFG(reg_idx), WX_PX_TR_CFG_SWFLSH);
285 }
286
287 /* Disable the Tx DMA engine */
288 wr32m(wx, WX_TDM_CTL, WX_TDM_CTL_TE, 0);
289 }
290
txgbe_down(struct wx * wx)291 static void txgbe_down(struct wx *wx)
292 {
293 struct txgbe *txgbe = netdev_to_txgbe(wx->netdev);
294
295 txgbe_disable_device(wx);
296 txgbe_reset(wx);
297 phylink_stop(txgbe->phylink);
298
299 wx_clean_all_tx_rings(wx);
300 wx_clean_all_rx_rings(wx);
301 }
302
303 /**
304 * txgbe_init_type_code - Initialize the shared code
305 * @wx: pointer to hardware structure
306 **/
txgbe_init_type_code(struct wx * wx)307 static void txgbe_init_type_code(struct wx *wx)
308 {
309 u8 device_type = wx->subsystem_device_id & 0xF0;
310
311 switch (wx->device_id) {
312 case TXGBE_DEV_ID_SP1000:
313 case TXGBE_DEV_ID_WX1820:
314 wx->mac.type = wx_mac_sp;
315 break;
316 default:
317 wx->mac.type = wx_mac_unknown;
318 break;
319 }
320
321 switch (device_type) {
322 case TXGBE_ID_SFP:
323 wx->media_type = sp_media_fiber;
324 break;
325 case TXGBE_ID_XAUI:
326 case TXGBE_ID_SGMII:
327 wx->media_type = sp_media_copper;
328 break;
329 case TXGBE_ID_KR_KX_KX4:
330 case TXGBE_ID_MAC_XAUI:
331 case TXGBE_ID_MAC_SGMII:
332 wx->media_type = sp_media_backplane;
333 break;
334 case TXGBE_ID_SFI_XAUI:
335 if (wx->bus.func == 0)
336 wx->media_type = sp_media_fiber;
337 else
338 wx->media_type = sp_media_copper;
339 break;
340 default:
341 wx->media_type = sp_media_unknown;
342 break;
343 }
344 }
345
346 /**
347 * txgbe_sw_init - Initialize general software structures (struct wx)
348 * @wx: board private structure to initialize
349 **/
txgbe_sw_init(struct wx * wx)350 static int txgbe_sw_init(struct wx *wx)
351 {
352 u16 msix_count = 0;
353 int err;
354
355 wx->mac.num_rar_entries = TXGBE_SP_RAR_ENTRIES;
356 wx->mac.max_tx_queues = TXGBE_SP_MAX_TX_QUEUES;
357 wx->mac.max_rx_queues = TXGBE_SP_MAX_RX_QUEUES;
358 wx->mac.mcft_size = TXGBE_SP_MC_TBL_SIZE;
359 wx->mac.vft_size = TXGBE_SP_VFT_TBL_SIZE;
360 wx->mac.rx_pb_size = TXGBE_SP_RX_PB_SIZE;
361 wx->mac.tx_pb_size = TXGBE_SP_TDB_PB_SZ;
362
363 /* PCI config space info */
364 err = wx_sw_init(wx);
365 if (err < 0)
366 return err;
367
368 txgbe_init_type_code(wx);
369
370 /* Set common capability flags and settings */
371 wx->max_q_vectors = TXGBE_MAX_MSIX_VECTORS;
372 err = wx_get_pcie_msix_counts(wx, &msix_count, TXGBE_MAX_MSIX_VECTORS);
373 if (err)
374 wx_err(wx, "Do not support MSI-X\n");
375 wx->mac.max_msix_vectors = msix_count;
376
377 /* enable itr by default in dynamic mode */
378 wx->rx_itr_setting = 1;
379 wx->tx_itr_setting = 1;
380
381 /* set default ring sizes */
382 wx->tx_ring_count = TXGBE_DEFAULT_TXD;
383 wx->rx_ring_count = TXGBE_DEFAULT_RXD;
384
385 /* set default work limits */
386 wx->tx_work_limit = TXGBE_DEFAULT_TX_WORK;
387 wx->rx_work_limit = TXGBE_DEFAULT_RX_WORK;
388
389 return 0;
390 }
391
392 /**
393 * txgbe_open - Called when a network interface is made active
394 * @netdev: network interface device structure
395 *
396 * Returns 0 on success, negative value on failure
397 *
398 * The open entry point is called when a network interface is made
399 * active by the system (IFF_UP).
400 **/
txgbe_open(struct net_device * netdev)401 static int txgbe_open(struct net_device *netdev)
402 {
403 struct wx *wx = netdev_priv(netdev);
404 int err;
405
406 err = wx_setup_resources(wx);
407 if (err)
408 goto err_reset;
409
410 wx_configure(wx);
411
412 err = txgbe_request_irq(wx);
413 if (err)
414 goto err_free_isb;
415
416 /* Notify the stack of the actual queue counts. */
417 err = netif_set_real_num_tx_queues(netdev, wx->num_tx_queues);
418 if (err)
419 goto err_free_irq;
420
421 err = netif_set_real_num_rx_queues(netdev, wx->num_rx_queues);
422 if (err)
423 goto err_free_irq;
424
425 txgbe_up_complete(wx);
426
427 return 0;
428
429 err_free_irq:
430 wx_free_irq(wx);
431 err_free_isb:
432 wx_free_isb_resources(wx);
433 err_reset:
434 txgbe_reset(wx);
435
436 return err;
437 }
438
439 /**
440 * txgbe_close_suspend - actions necessary to both suspend and close flows
441 * @wx: the private wx struct
442 *
443 * This function should contain the necessary work common to both suspending
444 * and closing of the device.
445 */
txgbe_close_suspend(struct wx * wx)446 static void txgbe_close_suspend(struct wx *wx)
447 {
448 txgbe_disable_device(wx);
449 wx_free_resources(wx);
450 }
451
452 /**
453 * txgbe_close - Disables a network interface
454 * @netdev: network interface device structure
455 *
456 * Returns 0, this is not allowed to fail
457 *
458 * The close entry point is called when an interface is de-activated
459 * by the OS. The hardware is still under the drivers control, but
460 * needs to be disabled. A global MAC reset is issued to stop the
461 * hardware, and all transmit and receive resources are freed.
462 **/
txgbe_close(struct net_device * netdev)463 static int txgbe_close(struct net_device *netdev)
464 {
465 struct wx *wx = netdev_priv(netdev);
466
467 txgbe_down(wx);
468 wx_free_irq(wx);
469 wx_free_resources(wx);
470 wx_control_hw(wx, false);
471
472 return 0;
473 }
474
txgbe_dev_shutdown(struct pci_dev * pdev)475 static void txgbe_dev_shutdown(struct pci_dev *pdev)
476 {
477 struct wx *wx = pci_get_drvdata(pdev);
478 struct net_device *netdev;
479
480 netdev = wx->netdev;
481 netif_device_detach(netdev);
482
483 rtnl_lock();
484 if (netif_running(netdev))
485 txgbe_close_suspend(wx);
486 rtnl_unlock();
487
488 wx_control_hw(wx, false);
489
490 pci_disable_device(pdev);
491 }
492
txgbe_shutdown(struct pci_dev * pdev)493 static void txgbe_shutdown(struct pci_dev *pdev)
494 {
495 txgbe_dev_shutdown(pdev);
496
497 if (system_state == SYSTEM_POWER_OFF) {
498 pci_wake_from_d3(pdev, false);
499 pci_set_power_state(pdev, PCI_D3hot);
500 }
501 }
502
503 static const struct net_device_ops txgbe_netdev_ops = {
504 .ndo_open = txgbe_open,
505 .ndo_stop = txgbe_close,
506 .ndo_change_mtu = wx_change_mtu,
507 .ndo_start_xmit = wx_xmit_frame,
508 .ndo_set_rx_mode = wx_set_rx_mode,
509 .ndo_set_features = wx_set_features,
510 .ndo_validate_addr = eth_validate_addr,
511 .ndo_set_mac_address = wx_set_mac,
512 .ndo_get_stats64 = wx_get_stats64,
513 .ndo_vlan_rx_add_vid = wx_vlan_rx_add_vid,
514 .ndo_vlan_rx_kill_vid = wx_vlan_rx_kill_vid,
515 };
516
517 /**
518 * txgbe_probe - Device Initialization Routine
519 * @pdev: PCI device information struct
520 * @ent: entry in txgbe_pci_tbl
521 *
522 * Returns 0 on success, negative on failure
523 *
524 * txgbe_probe initializes an adapter identified by a pci_dev structure.
525 * The OS initialization, configuring of the wx private structure,
526 * and a hardware reset occur.
527 **/
txgbe_probe(struct pci_dev * pdev,const struct pci_device_id __always_unused * ent)528 static int txgbe_probe(struct pci_dev *pdev,
529 const struct pci_device_id __always_unused *ent)
530 {
531 struct net_device *netdev;
532 int err, expected_gts;
533 struct wx *wx = NULL;
534 struct txgbe *txgbe;
535
536 u16 eeprom_verh = 0, eeprom_verl = 0, offset = 0;
537 u16 eeprom_cfg_blkh = 0, eeprom_cfg_blkl = 0;
538 u16 build = 0, major = 0, patch = 0;
539 u8 part_str[TXGBE_PBANUM_LENGTH];
540 u32 etrack_id = 0;
541
542 err = pci_enable_device_mem(pdev);
543 if (err)
544 return err;
545
546 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
547 if (err) {
548 dev_err(&pdev->dev,
549 "No usable DMA configuration, aborting\n");
550 goto err_pci_disable_dev;
551 }
552
553 err = pci_request_selected_regions(pdev,
554 pci_select_bars(pdev, IORESOURCE_MEM),
555 txgbe_driver_name);
556 if (err) {
557 dev_err(&pdev->dev,
558 "pci_request_selected_regions failed 0x%x\n", err);
559 goto err_pci_disable_dev;
560 }
561
562 pci_set_master(pdev);
563
564 netdev = devm_alloc_etherdev_mqs(&pdev->dev,
565 sizeof(struct wx),
566 TXGBE_MAX_TX_QUEUES,
567 TXGBE_MAX_RX_QUEUES);
568 if (!netdev) {
569 err = -ENOMEM;
570 goto err_pci_release_regions;
571 }
572
573 SET_NETDEV_DEV(netdev, &pdev->dev);
574
575 wx = netdev_priv(netdev);
576 wx->netdev = netdev;
577 wx->pdev = pdev;
578
579 wx->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1;
580
581 wx->hw_addr = devm_ioremap(&pdev->dev,
582 pci_resource_start(pdev, 0),
583 pci_resource_len(pdev, 0));
584 if (!wx->hw_addr) {
585 err = -EIO;
586 goto err_pci_release_regions;
587 }
588
589 wx->driver_name = txgbe_driver_name;
590 txgbe_set_ethtool_ops(netdev);
591 netdev->netdev_ops = &txgbe_netdev_ops;
592
593 /* setup the private structure */
594 err = txgbe_sw_init(wx);
595 if (err)
596 goto err_free_mac_table;
597
598 /* check if flash load is done after hw power up */
599 err = wx_check_flash_load(wx, TXGBE_SPI_ILDR_STATUS_PERST);
600 if (err)
601 goto err_free_mac_table;
602 err = wx_check_flash_load(wx, TXGBE_SPI_ILDR_STATUS_PWRRST);
603 if (err)
604 goto err_free_mac_table;
605
606 err = wx_mng_present(wx);
607 if (err) {
608 dev_err(&pdev->dev, "Management capability is not present\n");
609 goto err_free_mac_table;
610 }
611
612 err = txgbe_reset_hw(wx);
613 if (err) {
614 dev_err(&pdev->dev, "HW Init failed: %d\n", err);
615 goto err_free_mac_table;
616 }
617
618 netdev->features = NETIF_F_SG |
619 NETIF_F_TSO |
620 NETIF_F_TSO6 |
621 NETIF_F_RXHASH |
622 NETIF_F_RXCSUM |
623 NETIF_F_HW_CSUM;
624
625 netdev->gso_partial_features = NETIF_F_GSO_ENCAP_ALL;
626 netdev->features |= netdev->gso_partial_features;
627 netdev->features |= NETIF_F_SCTP_CRC;
628 netdev->vlan_features |= netdev->features | NETIF_F_TSO_MANGLEID;
629 netdev->hw_enc_features |= netdev->vlan_features;
630 netdev->features |= NETIF_F_VLAN_FEATURES;
631 /* copy netdev features into list of user selectable features */
632 netdev->hw_features |= netdev->features | NETIF_F_RXALL;
633 netdev->hw_features |= NETIF_F_NTUPLE | NETIF_F_HW_TC;
634 netdev->features |= NETIF_F_HIGHDMA;
635 netdev->hw_features |= NETIF_F_GRO;
636 netdev->features |= NETIF_F_GRO;
637
638 netdev->priv_flags |= IFF_UNICAST_FLT;
639 netdev->priv_flags |= IFF_SUPP_NOFCS;
640
641 netdev->min_mtu = ETH_MIN_MTU;
642 netdev->max_mtu = WX_MAX_JUMBO_FRAME_SIZE -
643 (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN);
644
645 /* make sure the EEPROM is good */
646 err = txgbe_validate_eeprom_checksum(wx, NULL);
647 if (err != 0) {
648 dev_err(&pdev->dev, "The EEPROM Checksum Is Not Valid\n");
649 wr32(wx, WX_MIS_RST, WX_MIS_RST_SW_RST);
650 err = -EIO;
651 goto err_free_mac_table;
652 }
653
654 eth_hw_addr_set(netdev, wx->mac.perm_addr);
655 wx_mac_set_default_filter(wx, wx->mac.perm_addr);
656
657 err = wx_init_interrupt_scheme(wx);
658 if (err)
659 goto err_free_mac_table;
660
661 /* Save off EEPROM version number and Option Rom version which
662 * together make a unique identify for the eeprom
663 */
664 wx_read_ee_hostif(wx,
665 wx->eeprom.sw_region_offset + TXGBE_EEPROM_VERSION_H,
666 &eeprom_verh);
667 wx_read_ee_hostif(wx,
668 wx->eeprom.sw_region_offset + TXGBE_EEPROM_VERSION_L,
669 &eeprom_verl);
670 etrack_id = (eeprom_verh << 16) | eeprom_verl;
671
672 wx_read_ee_hostif(wx,
673 wx->eeprom.sw_region_offset + TXGBE_ISCSI_BOOT_CONFIG,
674 &offset);
675
676 /* Make sure offset to SCSI block is valid */
677 if (!(offset == 0x0) && !(offset == 0xffff)) {
678 wx_read_ee_hostif(wx, offset + 0x84, &eeprom_cfg_blkh);
679 wx_read_ee_hostif(wx, offset + 0x83, &eeprom_cfg_blkl);
680
681 /* Only display Option Rom if exist */
682 if (eeprom_cfg_blkl && eeprom_cfg_blkh) {
683 major = eeprom_cfg_blkl >> 8;
684 build = (eeprom_cfg_blkl << 8) | (eeprom_cfg_blkh >> 8);
685 patch = eeprom_cfg_blkh & 0x00ff;
686
687 snprintf(wx->eeprom_id, sizeof(wx->eeprom_id),
688 "0x%08x, %d.%d.%d", etrack_id, major, build,
689 patch);
690 } else {
691 snprintf(wx->eeprom_id, sizeof(wx->eeprom_id),
692 "0x%08x", etrack_id);
693 }
694 } else {
695 snprintf(wx->eeprom_id, sizeof(wx->eeprom_id),
696 "0x%08x", etrack_id);
697 }
698
699 if (etrack_id < 0x20010)
700 dev_warn(&pdev->dev, "Please upgrade the firmware to 0x20010 or above.\n");
701
702 txgbe = devm_kzalloc(&pdev->dev, sizeof(*txgbe), GFP_KERNEL);
703 if (!txgbe) {
704 err = -ENOMEM;
705 goto err_release_hw;
706 }
707
708 txgbe->wx = wx;
709 wx->priv = txgbe;
710
711 err = txgbe_init_phy(txgbe);
712 if (err)
713 goto err_release_hw;
714
715 err = register_netdev(netdev);
716 if (err)
717 goto err_remove_phy;
718
719 pci_set_drvdata(pdev, wx);
720
721 netif_tx_stop_all_queues(netdev);
722
723 /* calculate the expected PCIe bandwidth required for optimal
724 * performance. Note that some older parts will never have enough
725 * bandwidth due to being older generation PCIe parts. We clamp these
726 * parts to ensure that no warning is displayed, as this could confuse
727 * users otherwise.
728 */
729 expected_gts = txgbe_enumerate_functions(wx) * 10;
730
731 /* don't check link if we failed to enumerate functions */
732 if (expected_gts > 0)
733 txgbe_check_minimum_link(wx);
734 else
735 dev_warn(&pdev->dev, "Failed to enumerate PF devices.\n");
736
737 /* First try to read PBA as a string */
738 err = txgbe_read_pba_string(wx, part_str, TXGBE_PBANUM_LENGTH);
739 if (err)
740 strncpy(part_str, "Unknown", TXGBE_PBANUM_LENGTH);
741
742 netif_info(wx, probe, netdev, "%pM\n", netdev->dev_addr);
743
744 return 0;
745
746 err_remove_phy:
747 txgbe_remove_phy(txgbe);
748 err_release_hw:
749 wx_clear_interrupt_scheme(wx);
750 wx_control_hw(wx, false);
751 err_free_mac_table:
752 kfree(wx->mac_table);
753 err_pci_release_regions:
754 pci_release_selected_regions(pdev,
755 pci_select_bars(pdev, IORESOURCE_MEM));
756 err_pci_disable_dev:
757 pci_disable_device(pdev);
758 return err;
759 }
760
761 /**
762 * txgbe_remove - Device Removal Routine
763 * @pdev: PCI device information struct
764 *
765 * txgbe_remove is called by the PCI subsystem to alert the driver
766 * that it should release a PCI device. The could be caused by a
767 * Hot-Plug event, or because the driver is going to be removed from
768 * memory.
769 **/
txgbe_remove(struct pci_dev * pdev)770 static void txgbe_remove(struct pci_dev *pdev)
771 {
772 struct wx *wx = pci_get_drvdata(pdev);
773 struct txgbe *txgbe = wx->priv;
774 struct net_device *netdev;
775
776 netdev = wx->netdev;
777 unregister_netdev(netdev);
778
779 txgbe_remove_phy(txgbe);
780
781 pci_release_selected_regions(pdev,
782 pci_select_bars(pdev, IORESOURCE_MEM));
783
784 kfree(wx->mac_table);
785 wx_clear_interrupt_scheme(wx);
786
787 pci_disable_device(pdev);
788 }
789
790 static struct pci_driver txgbe_driver = {
791 .name = txgbe_driver_name,
792 .id_table = txgbe_pci_tbl,
793 .probe = txgbe_probe,
794 .remove = txgbe_remove,
795 .shutdown = txgbe_shutdown,
796 };
797
798 module_pci_driver(txgbe_driver);
799
800 MODULE_DEVICE_TABLE(pci, txgbe_pci_tbl);
801 MODULE_AUTHOR("Beijing WangXun Technology Co., Ltd, <software@trustnetic.com>");
802 MODULE_DESCRIPTION("WangXun(R) 10 Gigabit PCI Express Network Driver");
803 MODULE_LICENSE("GPL");
804