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 wx_err(wx, "read of internal subsystem device id failed\n");
367 return err;
368 }
369
370 txgbe_init_type_code(wx);
371
372 /* Set common capability flags and settings */
373 wx->max_q_vectors = TXGBE_MAX_MSIX_VECTORS;
374 err = wx_get_pcie_msix_counts(wx, &msix_count, TXGBE_MAX_MSIX_VECTORS);
375 if (err)
376 wx_err(wx, "Do not support MSI-X\n");
377 wx->mac.max_msix_vectors = msix_count;
378
379 /* enable itr by default in dynamic mode */
380 wx->rx_itr_setting = 1;
381 wx->tx_itr_setting = 1;
382
383 /* set default ring sizes */
384 wx->tx_ring_count = TXGBE_DEFAULT_TXD;
385 wx->rx_ring_count = TXGBE_DEFAULT_RXD;
386
387 /* set default work limits */
388 wx->tx_work_limit = TXGBE_DEFAULT_TX_WORK;
389 wx->rx_work_limit = TXGBE_DEFAULT_RX_WORK;
390
391 return 0;
392 }
393
394 /**
395 * txgbe_open - Called when a network interface is made active
396 * @netdev: network interface device structure
397 *
398 * Returns 0 on success, negative value on failure
399 *
400 * The open entry point is called when a network interface is made
401 * active by the system (IFF_UP).
402 **/
txgbe_open(struct net_device * netdev)403 static int txgbe_open(struct net_device *netdev)
404 {
405 struct wx *wx = netdev_priv(netdev);
406 int err;
407
408 err = wx_setup_resources(wx);
409 if (err)
410 goto err_reset;
411
412 wx_configure(wx);
413
414 err = txgbe_request_irq(wx);
415 if (err)
416 goto err_free_isb;
417
418 /* Notify the stack of the actual queue counts. */
419 err = netif_set_real_num_tx_queues(netdev, wx->num_tx_queues);
420 if (err)
421 goto err_free_irq;
422
423 err = netif_set_real_num_rx_queues(netdev, wx->num_rx_queues);
424 if (err)
425 goto err_free_irq;
426
427 txgbe_up_complete(wx);
428
429 return 0;
430
431 err_free_irq:
432 wx_free_irq(wx);
433 err_free_isb:
434 wx_free_isb_resources(wx);
435 err_reset:
436 txgbe_reset(wx);
437
438 return err;
439 }
440
441 /**
442 * txgbe_close_suspend - actions necessary to both suspend and close flows
443 * @wx: the private wx struct
444 *
445 * This function should contain the necessary work common to both suspending
446 * and closing of the device.
447 */
txgbe_close_suspend(struct wx * wx)448 static void txgbe_close_suspend(struct wx *wx)
449 {
450 txgbe_disable_device(wx);
451 wx_free_resources(wx);
452 }
453
454 /**
455 * txgbe_close - Disables a network interface
456 * @netdev: network interface device structure
457 *
458 * Returns 0, this is not allowed to fail
459 *
460 * The close entry point is called when an interface is de-activated
461 * by the OS. The hardware is still under the drivers control, but
462 * needs to be disabled. A global MAC reset is issued to stop the
463 * hardware, and all transmit and receive resources are freed.
464 **/
txgbe_close(struct net_device * netdev)465 static int txgbe_close(struct net_device *netdev)
466 {
467 struct wx *wx = netdev_priv(netdev);
468
469 txgbe_down(wx);
470 wx_free_irq(wx);
471 wx_free_resources(wx);
472 wx_control_hw(wx, false);
473
474 return 0;
475 }
476
txgbe_dev_shutdown(struct pci_dev * pdev)477 static void txgbe_dev_shutdown(struct pci_dev *pdev)
478 {
479 struct wx *wx = pci_get_drvdata(pdev);
480 struct net_device *netdev;
481
482 netdev = wx->netdev;
483 netif_device_detach(netdev);
484
485 rtnl_lock();
486 if (netif_running(netdev))
487 txgbe_close_suspend(wx);
488 rtnl_unlock();
489
490 wx_control_hw(wx, false);
491
492 pci_disable_device(pdev);
493 }
494
txgbe_shutdown(struct pci_dev * pdev)495 static void txgbe_shutdown(struct pci_dev *pdev)
496 {
497 txgbe_dev_shutdown(pdev);
498
499 if (system_state == SYSTEM_POWER_OFF) {
500 pci_wake_from_d3(pdev, false);
501 pci_set_power_state(pdev, PCI_D3hot);
502 }
503 }
504
505 static const struct net_device_ops txgbe_netdev_ops = {
506 .ndo_open = txgbe_open,
507 .ndo_stop = txgbe_close,
508 .ndo_change_mtu = wx_change_mtu,
509 .ndo_start_xmit = wx_xmit_frame,
510 .ndo_set_rx_mode = wx_set_rx_mode,
511 .ndo_set_features = wx_set_features,
512 .ndo_validate_addr = eth_validate_addr,
513 .ndo_set_mac_address = wx_set_mac,
514 .ndo_get_stats64 = wx_get_stats64,
515 .ndo_vlan_rx_add_vid = wx_vlan_rx_add_vid,
516 .ndo_vlan_rx_kill_vid = wx_vlan_rx_kill_vid,
517 };
518
519 /**
520 * txgbe_probe - Device Initialization Routine
521 * @pdev: PCI device information struct
522 * @ent: entry in txgbe_pci_tbl
523 *
524 * Returns 0 on success, negative on failure
525 *
526 * txgbe_probe initializes an adapter identified by a pci_dev structure.
527 * The OS initialization, configuring of the wx private structure,
528 * and a hardware reset occur.
529 **/
txgbe_probe(struct pci_dev * pdev,const struct pci_device_id __always_unused * ent)530 static int txgbe_probe(struct pci_dev *pdev,
531 const struct pci_device_id __always_unused *ent)
532 {
533 struct net_device *netdev;
534 int err, expected_gts;
535 struct wx *wx = NULL;
536 struct txgbe *txgbe;
537
538 u16 eeprom_verh = 0, eeprom_verl = 0, offset = 0;
539 u16 eeprom_cfg_blkh = 0, eeprom_cfg_blkl = 0;
540 u16 build = 0, major = 0, patch = 0;
541 u8 part_str[TXGBE_PBANUM_LENGTH];
542 u32 etrack_id = 0;
543
544 err = pci_enable_device_mem(pdev);
545 if (err)
546 return err;
547
548 err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
549 if (err) {
550 dev_err(&pdev->dev,
551 "No usable DMA configuration, aborting\n");
552 goto err_pci_disable_dev;
553 }
554
555 err = pci_request_selected_regions(pdev,
556 pci_select_bars(pdev, IORESOURCE_MEM),
557 txgbe_driver_name);
558 if (err) {
559 dev_err(&pdev->dev,
560 "pci_request_selected_regions failed 0x%x\n", err);
561 goto err_pci_disable_dev;
562 }
563
564 pci_set_master(pdev);
565
566 netdev = devm_alloc_etherdev_mqs(&pdev->dev,
567 sizeof(struct wx),
568 TXGBE_MAX_TX_QUEUES,
569 TXGBE_MAX_RX_QUEUES);
570 if (!netdev) {
571 err = -ENOMEM;
572 goto err_pci_release_regions;
573 }
574
575 SET_NETDEV_DEV(netdev, &pdev->dev);
576
577 wx = netdev_priv(netdev);
578 wx->netdev = netdev;
579 wx->pdev = pdev;
580
581 wx->msg_enable = (1 << DEFAULT_DEBUG_LEVEL_SHIFT) - 1;
582
583 wx->hw_addr = devm_ioremap(&pdev->dev,
584 pci_resource_start(pdev, 0),
585 pci_resource_len(pdev, 0));
586 if (!wx->hw_addr) {
587 err = -EIO;
588 goto err_pci_release_regions;
589 }
590
591 wx->driver_name = txgbe_driver_name;
592 txgbe_set_ethtool_ops(netdev);
593 netdev->netdev_ops = &txgbe_netdev_ops;
594
595 /* setup the private structure */
596 err = txgbe_sw_init(wx);
597 if (err)
598 goto err_free_mac_table;
599
600 /* check if flash load is done after hw power up */
601 err = wx_check_flash_load(wx, TXGBE_SPI_ILDR_STATUS_PERST);
602 if (err)
603 goto err_free_mac_table;
604 err = wx_check_flash_load(wx, TXGBE_SPI_ILDR_STATUS_PWRRST);
605 if (err)
606 goto err_free_mac_table;
607
608 err = wx_mng_present(wx);
609 if (err) {
610 dev_err(&pdev->dev, "Management capability is not present\n");
611 goto err_free_mac_table;
612 }
613
614 err = txgbe_reset_hw(wx);
615 if (err) {
616 dev_err(&pdev->dev, "HW Init failed: %d\n", err);
617 goto err_free_mac_table;
618 }
619
620 netdev->features = NETIF_F_SG |
621 NETIF_F_TSO |
622 NETIF_F_TSO6 |
623 NETIF_F_RXHASH |
624 NETIF_F_RXCSUM |
625 NETIF_F_HW_CSUM;
626
627 netdev->gso_partial_features = NETIF_F_GSO_ENCAP_ALL;
628 netdev->features |= netdev->gso_partial_features;
629 netdev->features |= NETIF_F_SCTP_CRC;
630 netdev->vlan_features |= netdev->features | NETIF_F_TSO_MANGLEID;
631 netdev->hw_enc_features |= netdev->vlan_features;
632 netdev->features |= NETIF_F_VLAN_FEATURES;
633 /* copy netdev features into list of user selectable features */
634 netdev->hw_features |= netdev->features | NETIF_F_RXALL;
635 netdev->hw_features |= NETIF_F_NTUPLE | NETIF_F_HW_TC;
636 netdev->features |= NETIF_F_HIGHDMA;
637 netdev->hw_features |= NETIF_F_GRO;
638 netdev->features |= NETIF_F_GRO;
639
640 netdev->priv_flags |= IFF_UNICAST_FLT;
641 netdev->priv_flags |= IFF_SUPP_NOFCS;
642
643 netdev->min_mtu = ETH_MIN_MTU;
644 netdev->max_mtu = WX_MAX_JUMBO_FRAME_SIZE -
645 (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN);
646
647 /* make sure the EEPROM is good */
648 err = txgbe_validate_eeprom_checksum(wx, NULL);
649 if (err != 0) {
650 dev_err(&pdev->dev, "The EEPROM Checksum Is Not Valid\n");
651 wr32(wx, WX_MIS_RST, WX_MIS_RST_SW_RST);
652 err = -EIO;
653 goto err_free_mac_table;
654 }
655
656 eth_hw_addr_set(netdev, wx->mac.perm_addr);
657 wx_mac_set_default_filter(wx, wx->mac.perm_addr);
658
659 err = wx_init_interrupt_scheme(wx);
660 if (err)
661 goto err_free_mac_table;
662
663 /* Save off EEPROM version number and Option Rom version which
664 * together make a unique identify for the eeprom
665 */
666 wx_read_ee_hostif(wx,
667 wx->eeprom.sw_region_offset + TXGBE_EEPROM_VERSION_H,
668 &eeprom_verh);
669 wx_read_ee_hostif(wx,
670 wx->eeprom.sw_region_offset + TXGBE_EEPROM_VERSION_L,
671 &eeprom_verl);
672 etrack_id = (eeprom_verh << 16) | eeprom_verl;
673
674 wx_read_ee_hostif(wx,
675 wx->eeprom.sw_region_offset + TXGBE_ISCSI_BOOT_CONFIG,
676 &offset);
677
678 /* Make sure offset to SCSI block is valid */
679 if (!(offset == 0x0) && !(offset == 0xffff)) {
680 wx_read_ee_hostif(wx, offset + 0x84, &eeprom_cfg_blkh);
681 wx_read_ee_hostif(wx, offset + 0x83, &eeprom_cfg_blkl);
682
683 /* Only display Option Rom if exist */
684 if (eeprom_cfg_blkl && eeprom_cfg_blkh) {
685 major = eeprom_cfg_blkl >> 8;
686 build = (eeprom_cfg_blkl << 8) | (eeprom_cfg_blkh >> 8);
687 patch = eeprom_cfg_blkh & 0x00ff;
688
689 snprintf(wx->eeprom_id, sizeof(wx->eeprom_id),
690 "0x%08x, %d.%d.%d", etrack_id, major, build,
691 patch);
692 } else {
693 snprintf(wx->eeprom_id, sizeof(wx->eeprom_id),
694 "0x%08x", etrack_id);
695 }
696 } else {
697 snprintf(wx->eeprom_id, sizeof(wx->eeprom_id),
698 "0x%08x", etrack_id);
699 }
700
701 if (etrack_id < 0x20010)
702 dev_warn(&pdev->dev, "Please upgrade the firmware to 0x20010 or above.\n");
703
704 txgbe = devm_kzalloc(&pdev->dev, sizeof(*txgbe), GFP_KERNEL);
705 if (!txgbe) {
706 err = -ENOMEM;
707 goto err_release_hw;
708 }
709
710 txgbe->wx = wx;
711 wx->priv = txgbe;
712
713 err = txgbe_init_phy(txgbe);
714 if (err)
715 goto err_release_hw;
716
717 err = register_netdev(netdev);
718 if (err)
719 goto err_remove_phy;
720
721 pci_set_drvdata(pdev, wx);
722
723 netif_tx_stop_all_queues(netdev);
724
725 /* calculate the expected PCIe bandwidth required for optimal
726 * performance. Note that some older parts will never have enough
727 * bandwidth due to being older generation PCIe parts. We clamp these
728 * parts to ensure that no warning is displayed, as this could confuse
729 * users otherwise.
730 */
731 expected_gts = txgbe_enumerate_functions(wx) * 10;
732
733 /* don't check link if we failed to enumerate functions */
734 if (expected_gts > 0)
735 txgbe_check_minimum_link(wx);
736 else
737 dev_warn(&pdev->dev, "Failed to enumerate PF devices.\n");
738
739 /* First try to read PBA as a string */
740 err = txgbe_read_pba_string(wx, part_str, TXGBE_PBANUM_LENGTH);
741 if (err)
742 strncpy(part_str, "Unknown", TXGBE_PBANUM_LENGTH);
743
744 netif_info(wx, probe, netdev, "%pM\n", netdev->dev_addr);
745
746 return 0;
747
748 err_remove_phy:
749 txgbe_remove_phy(txgbe);
750 err_release_hw:
751 wx_clear_interrupt_scheme(wx);
752 wx_control_hw(wx, false);
753 err_free_mac_table:
754 kfree(wx->mac_table);
755 err_pci_release_regions:
756 pci_release_selected_regions(pdev,
757 pci_select_bars(pdev, IORESOURCE_MEM));
758 err_pci_disable_dev:
759 pci_disable_device(pdev);
760 return err;
761 }
762
763 /**
764 * txgbe_remove - Device Removal Routine
765 * @pdev: PCI device information struct
766 *
767 * txgbe_remove is called by the PCI subsystem to alert the driver
768 * that it should release a PCI device. The could be caused by a
769 * Hot-Plug event, or because the driver is going to be removed from
770 * memory.
771 **/
txgbe_remove(struct pci_dev * pdev)772 static void txgbe_remove(struct pci_dev *pdev)
773 {
774 struct wx *wx = pci_get_drvdata(pdev);
775 struct txgbe *txgbe = wx->priv;
776 struct net_device *netdev;
777
778 netdev = wx->netdev;
779 unregister_netdev(netdev);
780
781 txgbe_remove_phy(txgbe);
782
783 pci_release_selected_regions(pdev,
784 pci_select_bars(pdev, IORESOURCE_MEM));
785
786 kfree(wx->mac_table);
787 wx_clear_interrupt_scheme(wx);
788
789 pci_disable_device(pdev);
790 }
791
792 static struct pci_driver txgbe_driver = {
793 .name = txgbe_driver_name,
794 .id_table = txgbe_pci_tbl,
795 .probe = txgbe_probe,
796 .remove = txgbe_remove,
797 .shutdown = txgbe_shutdown,
798 };
799
800 module_pci_driver(txgbe_driver);
801
802 MODULE_DEVICE_TABLE(pci, txgbe_pci_tbl);
803 MODULE_AUTHOR("Beijing WangXun Technology Co., Ltd, <software@trustnetic.com>");
804 MODULE_DESCRIPTION("WangXun(R) 10 Gigabit PCI Express Network Driver");
805 MODULE_LICENSE("GPL");
806
