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[linux.git] / drivers / net / ethernet / wangxun / ngbe / ngbe_main.c
1 // SPDX-License-Identifier: GPL-2.0
2 /* Copyright (c) 2019 - 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 <net/ip.h>
11 #include <linux/phy.h>
12 #include <linux/if_vlan.h>
13
14 #include "../libwx/wx_type.h"
15 #include "../libwx/wx_hw.h"
16 #include "../libwx/wx_lib.h"
17 #include "ngbe_type.h"
18 #include "ngbe_mdio.h"
19 #include "ngbe_hw.h"
20 #include "ngbe_ethtool.h"
21
22 char ngbe_driver_name[] = "ngbe";
23
24 /* ngbe_pci_tbl - PCI Device ID Table
25  *
26  * { Vendor ID, Device ID, SubVendor ID, SubDevice ID,
27  *   Class, Class Mask, private data (not used) }
28  */
29 static const struct pci_device_id ngbe_pci_tbl[] = {
30         { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860AL_W), 0},
31         { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860A2), 0},
32         { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860A2S), 0},
33         { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860A4), 0},
34         { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860A4S), 0},
35         { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860AL2), 0},
36         { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860AL2S), 0},
37         { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860AL4), 0},
38         { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860AL4S), 0},
39         { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860LC), 0},
40         { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860A1), 0},
41         { PCI_VDEVICE(WANGXUN, NGBE_DEV_ID_EM_WX1860A1L), 0},
42         /* required last entry */
43         { .device = 0 }
44 };
45
46 /**
47  *  ngbe_init_type_code - Initialize the shared code
48  *  @wx: pointer to hardware structure
49  **/
50 static void ngbe_init_type_code(struct wx *wx)
51 {
52         int wol_mask = 0, ncsi_mask = 0;
53         u16 type_mask = 0, val;
54
55         wx->mac.type = wx_mac_em;
56         type_mask = (u16)(wx->subsystem_device_id & NGBE_OEM_MASK);
57         ncsi_mask = wx->subsystem_device_id & NGBE_NCSI_MASK;
58         wol_mask = wx->subsystem_device_id & NGBE_WOL_MASK;
59
60         val = rd32(wx, WX_CFG_PORT_ST);
61         wx->mac_type = (val & BIT(7)) >> 7 ?
62                        em_mac_type_rgmii :
63                        em_mac_type_mdi;
64
65         wx->wol_hw_supported = (wol_mask == NGBE_WOL_SUP) ? 1 : 0;
66         wx->ncsi_enabled = (ncsi_mask == NGBE_NCSI_MASK ||
67                            type_mask == NGBE_SUBID_OCP_CARD) ? 1 : 0;
68
69         switch (type_mask) {
70         case NGBE_SUBID_LY_YT8521S_SFP:
71         case NGBE_SUBID_LY_M88E1512_SFP:
72         case NGBE_SUBID_YT8521S_SFP_GPIO:
73         case NGBE_SUBID_INTERNAL_YT8521S_SFP_GPIO:
74                 wx->gpio_ctrl = 1;
75                 break;
76         default:
77                 wx->gpio_ctrl = 0;
78                 break;
79         }
80 }
81
82 /**
83  * ngbe_sw_init - Initialize general software structures
84  * @wx: board private structure to initialize
85  **/
86 static int ngbe_sw_init(struct wx *wx)
87 {
88         struct pci_dev *pdev = wx->pdev;
89         u16 msix_count = 0;
90         int err = 0;
91
92         wx->mac.num_rar_entries = NGBE_RAR_ENTRIES;
93         wx->mac.max_rx_queues = NGBE_MAX_RX_QUEUES;
94         wx->mac.max_tx_queues = NGBE_MAX_TX_QUEUES;
95         wx->mac.mcft_size = NGBE_MC_TBL_SIZE;
96         wx->mac.vft_size = NGBE_SP_VFT_TBL_SIZE;
97         wx->mac.rx_pb_size = NGBE_RX_PB_SIZE;
98         wx->mac.tx_pb_size = NGBE_TDB_PB_SZ;
99
100         /* PCI config space info */
101         err = wx_sw_init(wx);
102         if (err < 0)
103                 return err;
104
105         /* mac type, phy type , oem type */
106         ngbe_init_type_code(wx);
107
108         /* Set common capability flags and settings */
109         wx->max_q_vectors = NGBE_MAX_MSIX_VECTORS;
110         err = wx_get_pcie_msix_counts(wx, &msix_count, NGBE_MAX_MSIX_VECTORS);
111         if (err)
112                 dev_err(&pdev->dev, "Do not support MSI-X\n");
113         wx->mac.max_msix_vectors = msix_count;
114
115         wx->ring_feature[RING_F_RSS].limit = min_t(int, NGBE_MAX_RSS_INDICES,
116                                                    num_online_cpus());
117         wx->rss_enabled = true;
118
119         /* enable itr by default in dynamic mode */
120         wx->rx_itr_setting = 1;
121         wx->tx_itr_setting = 1;
122
123         /* set default ring sizes */
124         wx->tx_ring_count = NGBE_DEFAULT_TXD;
125         wx->rx_ring_count = NGBE_DEFAULT_RXD;
126
127         /* set default work limits */
128         wx->tx_work_limit = NGBE_DEFAULT_TX_WORK;
129         wx->rx_work_limit = NGBE_DEFAULT_RX_WORK;
130
131         return 0;
132 }
133
134 /**
135  * ngbe_irq_enable - Enable default interrupt generation settings
136  * @wx: board private structure
137  * @queues: enable all queues interrupts
138  **/
139 static void ngbe_irq_enable(struct wx *wx, bool queues)
140 {
141         u32 mask;
142
143         /* enable misc interrupt */
144         mask = NGBE_PX_MISC_IEN_MASK;
145
146         wr32(wx, WX_GPIO_DDR, WX_GPIO_DDR_0);
147         wr32(wx, WX_GPIO_INTEN, WX_GPIO_INTEN_0 | WX_GPIO_INTEN_1);
148         wr32(wx, WX_GPIO_INTTYPE_LEVEL, 0x0);
149         wr32(wx, WX_GPIO_POLARITY, wx->gpio_ctrl ? 0 : 0x3);
150
151         wr32(wx, WX_PX_MISC_IEN, mask);
152
153         /* mask interrupt */
154         if (queues)
155                 wx_intr_enable(wx, NGBE_INTR_ALL);
156         else
157                 wx_intr_enable(wx, NGBE_INTR_MISC);
158 }
159
160 /**
161  * ngbe_intr - msi/legacy mode Interrupt Handler
162  * @irq: interrupt number
163  * @data: pointer to a network interface device structure
164  **/
165 static irqreturn_t ngbe_intr(int __always_unused irq, void *data)
166 {
167         struct wx_q_vector *q_vector;
168         struct wx *wx  = data;
169         struct pci_dev *pdev;
170         u32 eicr;
171
172         q_vector = wx->q_vector[0];
173         pdev = wx->pdev;
174
175         eicr = wx_misc_isb(wx, WX_ISB_VEC0);
176         if (!eicr) {
177                 /* shared interrupt alert!
178                  * the interrupt that we masked before the EICR read.
179                  */
180                 if (netif_running(wx->netdev))
181                         ngbe_irq_enable(wx, true);
182                 return IRQ_NONE;        /* Not our interrupt */
183         }
184         wx->isb_mem[WX_ISB_VEC0] = 0;
185         if (!(pdev->msi_enabled))
186                 wr32(wx, WX_PX_INTA, 1);
187
188         wx->isb_mem[WX_ISB_MISC] = 0;
189         /* would disable interrupts here but it is auto disabled */
190         napi_schedule_irqoff(&q_vector->napi);
191
192         if (netif_running(wx->netdev))
193                 ngbe_irq_enable(wx, false);
194
195         return IRQ_HANDLED;
196 }
197
198 static irqreturn_t ngbe_msix_other(int __always_unused irq, void *data)
199 {
200         struct wx *wx = data;
201
202         /* re-enable the original interrupt state, no lsc, no queues */
203         if (netif_running(wx->netdev))
204                 ngbe_irq_enable(wx, false);
205
206         return IRQ_HANDLED;
207 }
208
209 /**
210  * ngbe_request_msix_irqs - Initialize MSI-X interrupts
211  * @wx: board private structure
212  *
213  * ngbe_request_msix_irqs allocates MSI-X vectors and requests
214  * interrupts from the kernel.
215  **/
216 static int ngbe_request_msix_irqs(struct wx *wx)
217 {
218         struct net_device *netdev = wx->netdev;
219         int vector, err;
220
221         for (vector = 0; vector < wx->num_q_vectors; vector++) {
222                 struct wx_q_vector *q_vector = wx->q_vector[vector];
223                 struct msix_entry *entry = &wx->msix_q_entries[vector];
224
225                 if (q_vector->tx.ring && q_vector->rx.ring)
226                         snprintf(q_vector->name, sizeof(q_vector->name) - 1,
227                                  "%s-TxRx-%d", netdev->name, entry->entry);
228                 else
229                         /* skip this unused q_vector */
230                         continue;
231
232                 err = request_irq(entry->vector, wx_msix_clean_rings, 0,
233                                   q_vector->name, q_vector);
234                 if (err) {
235                         wx_err(wx, "request_irq failed for MSIX interrupt %s Error: %d\n",
236                                q_vector->name, err);
237                         goto free_queue_irqs;
238                 }
239         }
240
241         err = request_irq(wx->msix_entry->vector,
242                           ngbe_msix_other, 0, netdev->name, wx);
243
244         if (err) {
245                 wx_err(wx, "request_irq for msix_other failed: %d\n", err);
246                 goto free_queue_irqs;
247         }
248
249         return 0;
250
251 free_queue_irqs:
252         while (vector) {
253                 vector--;
254                 free_irq(wx->msix_q_entries[vector].vector,
255                          wx->q_vector[vector]);
256         }
257         wx_reset_interrupt_capability(wx);
258         return err;
259 }
260
261 /**
262  * ngbe_request_irq - initialize interrupts
263  * @wx: board private structure
264  *
265  * Attempts to configure interrupts using the best available
266  * capabilities of the hardware and kernel.
267  **/
268 static int ngbe_request_irq(struct wx *wx)
269 {
270         struct net_device *netdev = wx->netdev;
271         struct pci_dev *pdev = wx->pdev;
272         int err;
273
274         if (pdev->msix_enabled)
275                 err = ngbe_request_msix_irqs(wx);
276         else if (pdev->msi_enabled)
277                 err = request_irq(pdev->irq, ngbe_intr, 0,
278                                   netdev->name, wx);
279         else
280                 err = request_irq(pdev->irq, ngbe_intr, IRQF_SHARED,
281                                   netdev->name, wx);
282
283         if (err)
284                 wx_err(wx, "request_irq failed, Error %d\n", err);
285
286         return err;
287 }
288
289 static void ngbe_disable_device(struct wx *wx)
290 {
291         struct net_device *netdev = wx->netdev;
292         u32 i;
293
294         /* disable all enabled rx queues */
295         for (i = 0; i < wx->num_rx_queues; i++)
296                 /* this call also flushes the previous write */
297                 wx_disable_rx_queue(wx, wx->rx_ring[i]);
298         /* disable receives */
299         wx_disable_rx(wx);
300         wx_napi_disable_all(wx);
301         netif_tx_stop_all_queues(netdev);
302         netif_tx_disable(netdev);
303         if (wx->gpio_ctrl)
304                 ngbe_sfp_modules_txrx_powerctl(wx, false);
305         wx_irq_disable(wx);
306         /* disable transmits in the hardware now that interrupts are off */
307         for (i = 0; i < wx->num_tx_queues; i++) {
308                 u8 reg_idx = wx->tx_ring[i]->reg_idx;
309
310                 wr32(wx, WX_PX_TR_CFG(reg_idx), WX_PX_TR_CFG_SWFLSH);
311         }
312
313         wx_update_stats(wx);
314 }
315
316 void ngbe_down(struct wx *wx)
317 {
318         phylink_stop(wx->phylink);
319         ngbe_disable_device(wx);
320         wx_clean_all_tx_rings(wx);
321         wx_clean_all_rx_rings(wx);
322 }
323
324 void ngbe_up(struct wx *wx)
325 {
326         wx_configure_vectors(wx);
327
328         /* make sure to complete pre-operations */
329         smp_mb__before_atomic();
330         wx_napi_enable_all(wx);
331         /* enable transmits */
332         netif_tx_start_all_queues(wx->netdev);
333
334         /* clear any pending interrupts, may auto mask */
335         rd32(wx, WX_PX_IC(0));
336         rd32(wx, WX_PX_MISC_IC);
337         ngbe_irq_enable(wx, true);
338         if (wx->gpio_ctrl)
339                 ngbe_sfp_modules_txrx_powerctl(wx, true);
340
341         phylink_start(wx->phylink);
342 }
343
344 /**
345  * ngbe_open - Called when a network interface is made active
346  * @netdev: network interface device structure
347  *
348  * Returns 0 on success, negative value on failure
349  *
350  * The open entry point is called when a network interface is made
351  * active by the system (IFF_UP).
352  **/
353 static int ngbe_open(struct net_device *netdev)
354 {
355         struct wx *wx = netdev_priv(netdev);
356         int err;
357
358         wx_control_hw(wx, true);
359
360         err = wx_setup_resources(wx);
361         if (err)
362                 return err;
363
364         wx_configure(wx);
365
366         err = ngbe_request_irq(wx);
367         if (err)
368                 goto err_free_resources;
369
370         err = phylink_connect_phy(wx->phylink, wx->phydev);
371         if (err)
372                 goto err_free_irq;
373
374         err = netif_set_real_num_tx_queues(netdev, wx->num_tx_queues);
375         if (err)
376                 goto err_dis_phy;
377
378         err = netif_set_real_num_rx_queues(netdev, wx->num_rx_queues);
379         if (err)
380                 goto err_dis_phy;
381
382         ngbe_up(wx);
383
384         return 0;
385 err_dis_phy:
386         phylink_disconnect_phy(wx->phylink);
387 err_free_irq:
388         wx_free_irq(wx);
389 err_free_resources:
390         wx_free_isb_resources(wx);
391         wx_free_resources(wx);
392         return err;
393 }
394
395 /**
396  * ngbe_close - Disables a network interface
397  * @netdev: network interface device structure
398  *
399  * Returns 0, this is not allowed to fail
400  *
401  * The close entry point is called when an interface is de-activated
402  * by the OS.  The hardware is still under the drivers control, but
403  * needs to be disabled.  A global MAC reset is issued to stop the
404  * hardware, and all transmit and receive resources are freed.
405  **/
406 static int ngbe_close(struct net_device *netdev)
407 {
408         struct wx *wx = netdev_priv(netdev);
409
410         ngbe_down(wx);
411         wx_free_irq(wx);
412         wx_free_isb_resources(wx);
413         wx_free_resources(wx);
414         phylink_disconnect_phy(wx->phylink);
415         wx_control_hw(wx, false);
416
417         return 0;
418 }
419
420 static void ngbe_dev_shutdown(struct pci_dev *pdev, bool *enable_wake)
421 {
422         struct wx *wx = pci_get_drvdata(pdev);
423         struct net_device *netdev;
424         u32 wufc = wx->wol;
425
426         netdev = wx->netdev;
427         rtnl_lock();
428         netif_device_detach(netdev);
429
430         if (netif_running(netdev))
431                 ngbe_close(netdev);
432         wx_clear_interrupt_scheme(wx);
433         rtnl_unlock();
434
435         if (wufc) {
436                 wx_set_rx_mode(netdev);
437                 wx_configure_rx(wx);
438                 wr32(wx, NGBE_PSR_WKUP_CTL, wufc);
439         } else {
440                 wr32(wx, NGBE_PSR_WKUP_CTL, 0);
441         }
442         pci_wake_from_d3(pdev, !!wufc);
443         *enable_wake = !!wufc;
444         wx_control_hw(wx, false);
445
446         pci_disable_device(pdev);
447 }
448
449 static void ngbe_shutdown(struct pci_dev *pdev)
450 {
451         struct wx *wx = pci_get_drvdata(pdev);
452         bool wake;
453
454         wake = !!wx->wol;
455
456         ngbe_dev_shutdown(pdev, &wake);
457
458         if (system_state == SYSTEM_POWER_OFF) {
459                 pci_wake_from_d3(pdev, wake);
460                 pci_set_power_state(pdev, PCI_D3hot);
461         }
462 }
463
464 /**
465  * ngbe_setup_tc - routine to configure net_device for multiple traffic
466  * classes.
467  *
468  * @dev: net device to configure
469  * @tc: number of traffic classes to enable
470  */
471 int ngbe_setup_tc(struct net_device *dev, u8 tc)
472 {
473         struct wx *wx = netdev_priv(dev);
474
475         /* Hardware has to reinitialize queues and interrupts to
476          * match packet buffer alignment. Unfortunately, the
477          * hardware is not flexible enough to do this dynamically.
478          */
479         if (netif_running(dev))
480                 ngbe_close(dev);
481
482         wx_clear_interrupt_scheme(wx);
483
484         if (tc)
485                 netdev_set_num_tc(dev, tc);
486         else
487                 netdev_reset_tc(dev);
488
489         wx_init_interrupt_scheme(wx);
490
491         if (netif_running(dev))
492                 ngbe_open(dev);
493
494         return 0;
495 }
496
497 static const struct net_device_ops ngbe_netdev_ops = {
498         .ndo_open               = ngbe_open,
499         .ndo_stop               = ngbe_close,
500         .ndo_change_mtu         = wx_change_mtu,
501         .ndo_start_xmit         = wx_xmit_frame,
502         .ndo_set_rx_mode        = wx_set_rx_mode,
503         .ndo_set_features       = wx_set_features,
504         .ndo_fix_features       = wx_fix_features,
505         .ndo_validate_addr      = eth_validate_addr,
506         .ndo_set_mac_address    = wx_set_mac,
507         .ndo_get_stats64        = wx_get_stats64,
508         .ndo_vlan_rx_add_vid    = wx_vlan_rx_add_vid,
509         .ndo_vlan_rx_kill_vid   = wx_vlan_rx_kill_vid,
510 };
511
512 /**
513  * ngbe_probe - Device Initialization Routine
514  * @pdev: PCI device information struct
515  * @ent: entry in ngbe_pci_tbl
516  *
517  * Returns 0 on success, negative on failure
518  *
519  * ngbe_probe initializes an wx identified by a pci_dev structure.
520  * The OS initialization, configuring of the wx private structure,
521  * and a hardware reset occur.
522  **/
523 static int ngbe_probe(struct pci_dev *pdev,
524                       const struct pci_device_id __always_unused *ent)
525 {
526         struct net_device *netdev;
527         u32 e2rom_cksum_cap = 0;
528         struct wx *wx = NULL;
529         static int func_nums;
530         u16 e2rom_ver = 0;
531         u32 etrack_id = 0;
532         u32 saved_ver = 0;
533         int err;
534
535         err = pci_enable_device_mem(pdev);
536         if (err)
537                 return err;
538
539         err = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64));
540         if (err) {
541                 dev_err(&pdev->dev,
542                         "No usable DMA configuration, aborting\n");
543                 goto err_pci_disable_dev;
544         }
545
546         err = pci_request_selected_regions(pdev,
547                                            pci_select_bars(pdev, IORESOURCE_MEM),
548                                            ngbe_driver_name);
549         if (err) {
550                 dev_err(&pdev->dev,
551                         "pci_request_selected_regions failed %d\n", err);
552                 goto err_pci_disable_dev;
553         }
554
555         pci_set_master(pdev);
556
557         netdev = devm_alloc_etherdev_mqs(&pdev->dev,
558                                          sizeof(struct wx),
559                                          NGBE_MAX_TX_QUEUES,
560                                          NGBE_MAX_RX_QUEUES);
561         if (!netdev) {
562                 err = -ENOMEM;
563                 goto err_pci_release_regions;
564         }
565
566         SET_NETDEV_DEV(netdev, &pdev->dev);
567
568         wx = netdev_priv(netdev);
569         wx->netdev = netdev;
570         wx->pdev = pdev;
571         wx->msg_enable = BIT(3) - 1;
572
573         wx->hw_addr = devm_ioremap(&pdev->dev,
574                                    pci_resource_start(pdev, 0),
575                                    pci_resource_len(pdev, 0));
576         if (!wx->hw_addr) {
577                 err = -EIO;
578                 goto err_pci_release_regions;
579         }
580
581         wx->driver_name = ngbe_driver_name;
582         ngbe_set_ethtool_ops(netdev);
583         netdev->netdev_ops = &ngbe_netdev_ops;
584
585         netdev->features = NETIF_F_SG | NETIF_F_IP_CSUM |
586                            NETIF_F_TSO | NETIF_F_TSO6 |
587                            NETIF_F_RXHASH | NETIF_F_RXCSUM;
588         netdev->features |= NETIF_F_SCTP_CRC | NETIF_F_TSO_MANGLEID;
589         netdev->vlan_features |= netdev->features;
590         netdev->features |= NETIF_F_IPV6_CSUM | NETIF_F_VLAN_FEATURES;
591         /* copy netdev features into list of user selectable features */
592         netdev->hw_features |= netdev->features | NETIF_F_RXALL;
593         netdev->hw_features |= NETIF_F_NTUPLE | NETIF_F_HW_TC;
594         netdev->features |= NETIF_F_HIGHDMA;
595         netdev->hw_features |= NETIF_F_GRO;
596         netdev->features |= NETIF_F_GRO;
597
598         netdev->priv_flags |= IFF_UNICAST_FLT;
599         netdev->priv_flags |= IFF_SUPP_NOFCS;
600         netdev->priv_flags |= IFF_LIVE_ADDR_CHANGE;
601
602         netdev->min_mtu = ETH_MIN_MTU;
603         netdev->max_mtu = WX_MAX_JUMBO_FRAME_SIZE -
604                           (ETH_HLEN + ETH_FCS_LEN + VLAN_HLEN);
605
606         wx->bd_number = func_nums;
607         /* setup the private structure */
608         err = ngbe_sw_init(wx);
609         if (err)
610                 goto err_free_mac_table;
611
612         /* check if flash load is done after hw power up */
613         err = wx_check_flash_load(wx, NGBE_SPI_ILDR_STATUS_PERST);
614         if (err)
615                 goto err_free_mac_table;
616         err = wx_check_flash_load(wx, NGBE_SPI_ILDR_STATUS_PWRRST);
617         if (err)
618                 goto err_free_mac_table;
619
620         err = wx_mng_present(wx);
621         if (err) {
622                 dev_err(&pdev->dev, "Management capability is not present\n");
623                 goto err_free_mac_table;
624         }
625
626         err = ngbe_reset_hw(wx);
627         if (err) {
628                 dev_err(&pdev->dev, "HW Init failed: %d\n", err);
629                 goto err_free_mac_table;
630         }
631
632         if (wx->bus.func == 0) {
633                 wr32(wx, NGBE_CALSUM_CAP_STATUS, 0x0);
634                 wr32(wx, NGBE_EEPROM_VERSION_STORE_REG, 0x0);
635         } else {
636                 e2rom_cksum_cap = rd32(wx, NGBE_CALSUM_CAP_STATUS);
637                 saved_ver = rd32(wx, NGBE_EEPROM_VERSION_STORE_REG);
638         }
639
640         wx_init_eeprom_params(wx);
641         if (wx->bus.func == 0 || e2rom_cksum_cap == 0) {
642                 /* make sure the EEPROM is ready */
643                 err = ngbe_eeprom_chksum_hostif(wx);
644                 if (err) {
645                         dev_err(&pdev->dev, "The EEPROM Checksum Is Not Valid\n");
646                         err = -EIO;
647                         goto err_free_mac_table;
648                 }
649         }
650
651         wx->wol = 0;
652         if (wx->wol_hw_supported)
653                 wx->wol = NGBE_PSR_WKUP_CTL_MAG;
654
655         netdev->ethtool->wol_enabled = !!(wx->wol);
656         wr32(wx, NGBE_PSR_WKUP_CTL, wx->wol);
657         device_set_wakeup_enable(&pdev->dev, wx->wol);
658
659         /* Save off EEPROM version number and Option Rom version which
660          * together make a unique identify for the eeprom
661          */
662         if (saved_ver) {
663                 etrack_id = saved_ver;
664         } else {
665                 wx_read_ee_hostif(wx,
666                                   wx->eeprom.sw_region_offset + NGBE_EEPROM_VERSION_H,
667                                   &e2rom_ver);
668                 etrack_id = e2rom_ver << 16;
669                 wx_read_ee_hostif(wx,
670                                   wx->eeprom.sw_region_offset + NGBE_EEPROM_VERSION_L,
671                                   &e2rom_ver);
672                 etrack_id |= e2rom_ver;
673                 wr32(wx, NGBE_EEPROM_VERSION_STORE_REG, etrack_id);
674         }
675         snprintf(wx->eeprom_id, sizeof(wx->eeprom_id),
676                  "0x%08x", etrack_id);
677
678         eth_hw_addr_set(netdev, wx->mac.perm_addr);
679         wx_mac_set_default_filter(wx, wx->mac.perm_addr);
680
681         err = wx_init_interrupt_scheme(wx);
682         if (err)
683                 goto err_free_mac_table;
684
685         /* phy Interface Configuration */
686         err = ngbe_mdio_init(wx);
687         if (err)
688                 goto err_clear_interrupt_scheme;
689
690         err = register_netdev(netdev);
691         if (err)
692                 goto err_register;
693
694         pci_set_drvdata(pdev, wx);
695
696         return 0;
697
698 err_register:
699         phylink_destroy(wx->phylink);
700         wx_control_hw(wx, false);
701 err_clear_interrupt_scheme:
702         wx_clear_interrupt_scheme(wx);
703 err_free_mac_table:
704         kfree(wx->mac_table);
705 err_pci_release_regions:
706         pci_release_selected_regions(pdev,
707                                      pci_select_bars(pdev, IORESOURCE_MEM));
708 err_pci_disable_dev:
709         pci_disable_device(pdev);
710         return err;
711 }
712
713 /**
714  * ngbe_remove - Device Removal Routine
715  * @pdev: PCI device information struct
716  *
717  * ngbe_remove is called by the PCI subsystem to alert the driver
718  * that it should release a PCI device.  The could be caused by a
719  * Hot-Plug event, or because the driver is going to be removed from
720  * memory.
721  **/
722 static void ngbe_remove(struct pci_dev *pdev)
723 {
724         struct wx *wx = pci_get_drvdata(pdev);
725         struct net_device *netdev;
726
727         netdev = wx->netdev;
728         unregister_netdev(netdev);
729         phylink_destroy(wx->phylink);
730         pci_release_selected_regions(pdev,
731                                      pci_select_bars(pdev, IORESOURCE_MEM));
732
733         kfree(wx->rss_key);
734         kfree(wx->mac_table);
735         wx_clear_interrupt_scheme(wx);
736
737         pci_disable_device(pdev);
738 }
739
740 static int ngbe_suspend(struct pci_dev *pdev, pm_message_t state)
741 {
742         bool wake;
743
744         ngbe_dev_shutdown(pdev, &wake);
745         device_set_wakeup_enable(&pdev->dev, wake);
746
747         return 0;
748 }
749
750 static int ngbe_resume(struct pci_dev *pdev)
751 {
752         struct net_device *netdev;
753         struct wx *wx;
754         u32 err;
755
756         wx = pci_get_drvdata(pdev);
757         netdev = wx->netdev;
758
759         err = pci_enable_device_mem(pdev);
760         if (err) {
761                 wx_err(wx, "Cannot enable PCI device from suspend\n");
762                 return err;
763         }
764         pci_set_master(pdev);
765         device_wakeup_disable(&pdev->dev);
766
767         ngbe_reset_hw(wx);
768         rtnl_lock();
769         err = wx_init_interrupt_scheme(wx);
770         if (!err && netif_running(netdev))
771                 err = ngbe_open(netdev);
772         if (!err)
773                 netif_device_attach(netdev);
774         rtnl_unlock();
775
776         return 0;
777 }
778
779 static struct pci_driver ngbe_driver = {
780         .name     = ngbe_driver_name,
781         .id_table = ngbe_pci_tbl,
782         .probe    = ngbe_probe,
783         .remove   = ngbe_remove,
784         .suspend  = ngbe_suspend,
785         .resume   = ngbe_resume,
786         .shutdown = ngbe_shutdown,
787 };
788
789 module_pci_driver(ngbe_driver);
790
791 MODULE_DEVICE_TABLE(pci, ngbe_pci_tbl);
792 MODULE_AUTHOR("Beijing WangXun Technology Co., Ltd, <[email protected]>");
793 MODULE_DESCRIPTION("WangXun(R) Gigabit PCI Express Network Driver");
794 MODULE_LICENSE("GPL");
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