1 /*******************************************************************************
3 * Linux ThunderLAN Driver
8 * (C) 1997-1998 Caldera, Inc.
10 * (C) 1999-2001 Torben Mathiasen
11 * (C) 2002 Samuel Chessman
13 * This software may be used and distributed according to the terms
14 * of the GNU General Public License, incorporated herein by reference.
16 ** Useful (if not required) reading:
18 * Texas Instruments, ThunderLAN Programmer's Guide,
19 * TI Literature Number SPWU013A
20 * available in PDF format from www.ti.com
21 * Level One, LXT901 and LXT970 Data Sheets
22 * available in PDF format from www.level1.com
23 * National Semiconductor, DP83840A Data Sheet
24 * available in PDF format from www.national.com
25 * Microchip Technology, 24C01A/02A/04A Data Sheet
26 * available in PDF format from www.microchip.com
28 ******************************************************************************/
30 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
32 #include <linux/hardirq.h>
33 #include <linux/module.h>
34 #include <linux/init.h>
35 #include <linux/interrupt.h>
36 #include <linux/ioport.h>
37 #include <linux/eisa.h>
38 #include <linux/pci.h>
39 #include <linux/dma-mapping.h>
40 #include <linux/netdevice.h>
41 #include <linux/etherdevice.h>
42 #include <linux/delay.h>
43 #include <linux/spinlock.h>
44 #include <linux/workqueue.h>
45 #include <linux/mii.h>
50 /* For removing EISA devices */
51 static struct net_device *tlan_eisa_devices;
53 static int tlan_devices_installed;
55 /* Set speed, duplex and aui settings */
56 static int aui[MAX_TLAN_BOARDS];
57 static int duplex[MAX_TLAN_BOARDS];
58 static int speed[MAX_TLAN_BOARDS];
59 static int boards_found;
60 module_param_array(aui, int, NULL, 0);
61 module_param_array(duplex, int, NULL, 0);
62 module_param_array(speed, int, NULL, 0);
63 MODULE_PARM_DESC(aui, "ThunderLAN use AUI port(s) (0-1)");
64 MODULE_PARM_DESC(duplex,
65 "ThunderLAN duplex setting(s) (0-default, 1-half, 2-full)");
66 MODULE_PARM_DESC(speed, "ThunderLAN port speed setting(s) (0,10,100)");
68 MODULE_AUTHOR("Maintainer: Samuel Chessman <chessman@tux.org>");
69 MODULE_DESCRIPTION("Driver for TI ThunderLAN based ethernet PCI adapters");
70 MODULE_LICENSE("GPL");
72 /* Turn on debugging. See Documentation/networking/tlan.txt for details */
74 module_param(debug, int, 0);
75 MODULE_PARM_DESC(debug, "ThunderLAN debug mask");
77 static const char tlan_signature[] = "TLAN";
78 static const char tlan_banner[] = "ThunderLAN driver v1.17\n";
79 static int tlan_have_pci;
80 static int tlan_have_eisa;
82 static const char * const media[] = {
83 "10BaseT-HD", "10BaseT-FD", "100baseTx-HD",
84 "100BaseTx-FD", "100BaseT4", NULL
88 const char *device_label;
92 { "Compaq Netelligent 10 T PCI UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
93 { "Compaq Netelligent 10/100 TX PCI UTP",
94 TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
95 { "Compaq Integrated NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
96 { "Compaq NetFlex-3/P",
97 TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 },
98 { "Compaq NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
99 { "Compaq Netelligent Integrated 10/100 TX UTP",
100 TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
101 { "Compaq Netelligent Dual 10/100 TX PCI UTP",
102 TLAN_ADAPTER_NONE, 0x83 },
103 { "Compaq Netelligent 10/100 TX Embedded UTP",
104 TLAN_ADAPTER_NONE, 0x83 },
105 { "Olicom OC-2183/2185", TLAN_ADAPTER_USE_INTERN_10, 0x83 },
106 { "Olicom OC-2325", TLAN_ADAPTER_ACTIVITY_LED |
107 TLAN_ADAPTER_UNMANAGED_PHY, 0xf8 },
108 { "Olicom OC-2326", TLAN_ADAPTER_ACTIVITY_LED |
109 TLAN_ADAPTER_USE_INTERN_10, 0xf8 },
110 { "Compaq Netelligent 10/100 TX UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
111 { "Compaq Netelligent 10 T/2 PCI UTP/coax", TLAN_ADAPTER_NONE, 0x83 },
112 { "Compaq NetFlex-3/E",
113 TLAN_ADAPTER_ACTIVITY_LED | /* EISA card */
114 TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 },
115 { "Compaq NetFlex-3/E",
116 TLAN_ADAPTER_ACTIVITY_LED, 0x83 }, /* EISA card */
119 static DEFINE_PCI_DEVICE_TABLE(tlan_pci_tbl) = {
120 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL10,
121 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
122 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100,
123 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 },
124 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3I,
125 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2 },
126 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_THUNDER,
127 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3 },
128 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3B,
129 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 },
130 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100PI,
131 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5 },
132 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100D,
133 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 6 },
134 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100I,
135 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 7 },
136 { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2183,
137 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 8 },
138 { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2325,
139 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 9 },
140 { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2326,
141 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 10 },
142 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_100_WS_5100,
143 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 11 },
144 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_T2,
145 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 12 },
148 MODULE_DEVICE_TABLE(pci, tlan_pci_tbl);
150 static void tlan_eisa_probe(void);
151 static void tlan_eisa_cleanup(void);
152 static int tlan_init(struct net_device *);
153 static int tlan_open(struct net_device *dev);
154 static netdev_tx_t tlan_start_tx(struct sk_buff *, struct net_device *);
155 static irqreturn_t tlan_handle_interrupt(int, void *);
156 static int tlan_close(struct net_device *);
157 static struct net_device_stats *tlan_get_stats(struct net_device *);
158 static void tlan_set_multicast_list(struct net_device *);
159 static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
160 static int tlan_probe1(struct pci_dev *pdev, long ioaddr,
161 int irq, int rev, const struct pci_device_id *ent);
162 static void tlan_tx_timeout(struct net_device *dev);
163 static void tlan_tx_timeout_work(struct work_struct *work);
164 static int tlan_init_one(struct pci_dev *pdev,
165 const struct pci_device_id *ent);
167 static u32 tlan_handle_tx_eof(struct net_device *, u16);
168 static u32 tlan_handle_stat_overflow(struct net_device *, u16);
169 static u32 tlan_handle_rx_eof(struct net_device *, u16);
170 static u32 tlan_handle_dummy(struct net_device *, u16);
171 static u32 tlan_handle_tx_eoc(struct net_device *, u16);
172 static u32 tlan_handle_status_check(struct net_device *, u16);
173 static u32 tlan_handle_rx_eoc(struct net_device *, u16);
175 static void tlan_timer(unsigned long);
177 static void tlan_reset_lists(struct net_device *);
178 static void tlan_free_lists(struct net_device *);
179 static void tlan_print_dio(u16);
180 static void tlan_print_list(struct tlan_list *, char *, int);
181 static void tlan_read_and_clear_stats(struct net_device *, int);
182 static void tlan_reset_adapter(struct net_device *);
183 static void tlan_finish_reset(struct net_device *);
184 static void tlan_set_mac(struct net_device *, int areg, char *mac);
186 static void tlan_phy_print(struct net_device *);
187 static void tlan_phy_detect(struct net_device *);
188 static void tlan_phy_power_down(struct net_device *);
189 static void tlan_phy_power_up(struct net_device *);
190 static void tlan_phy_reset(struct net_device *);
191 static void tlan_phy_start_link(struct net_device *);
192 static void tlan_phy_finish_auto_neg(struct net_device *);
193 static void tlan_phy_monitor(unsigned long);
196 static int tlan_phy_nop(struct net_device *);
197 static int tlan_phy_internal_check(struct net_device *);
198 static int tlan_phy_internal_service(struct net_device *);
199 static int tlan_phy_dp83840a_check(struct net_device *);
202 static bool tlan_mii_read_reg(struct net_device *, u16, u16, u16 *);
203 static void tlan_mii_send_data(u16, u32, unsigned);
204 static void tlan_mii_sync(u16);
205 static void tlan_mii_write_reg(struct net_device *, u16, u16, u16);
207 static void tlan_ee_send_start(u16);
208 static int tlan_ee_send_byte(u16, u8, int);
209 static void tlan_ee_receive_byte(u16, u8 *, int);
210 static int tlan_ee_read_byte(struct net_device *, u8, u8 *);
214 tlan_store_skb(struct tlan_list *tag, struct sk_buff *skb)
216 unsigned long addr = (unsigned long)skb;
217 tag->buffer[9].address = addr;
218 tag->buffer[8].address = upper_32_bits(addr);
221 static inline struct sk_buff *
222 tlan_get_skb(const struct tlan_list *tag)
226 addr = tag->buffer[9].address;
227 addr |= ((unsigned long) tag->buffer[8].address << 16) << 16;
228 return (struct sk_buff *) addr;
232 (*tlan_int_vector[TLAN_INT_NUMBER_OF_INTS])(struct net_device *, u16) = {
235 tlan_handle_stat_overflow,
239 tlan_handle_status_check,
244 tlan_set_timer(struct net_device *dev, u32 ticks, u32 type)
246 struct tlan_priv *priv = netdev_priv(dev);
247 unsigned long flags = 0;
250 spin_lock_irqsave(&priv->lock, flags);
251 if (priv->timer.function != NULL &&
252 priv->timer_type != TLAN_TIMER_ACTIVITY) {
254 spin_unlock_irqrestore(&priv->lock, flags);
257 priv->timer.function = tlan_timer;
259 spin_unlock_irqrestore(&priv->lock, flags);
261 priv->timer.data = (unsigned long) dev;
262 priv->timer_set_at = jiffies;
263 priv->timer_type = type;
264 mod_timer(&priv->timer, jiffies + ticks);
269 /*****************************************************************************
270 ******************************************************************************
272 ThunderLAN driver primary functions
274 these functions are more or less common to all linux network drivers.
276 ******************************************************************************
277 *****************************************************************************/
283 /***************************************************************
291 * Goes through the TLanDevices list and frees the device
292 * structs and memory associated with each device (lists
293 * and buffers). It also ureserves the IO port regions
294 * associated with this device.
296 **************************************************************/
299 static void tlan_remove_one(struct pci_dev *pdev)
301 struct net_device *dev = pci_get_drvdata(pdev);
302 struct tlan_priv *priv = netdev_priv(dev);
304 unregister_netdev(dev);
306 if (priv->dma_storage) {
307 pci_free_consistent(priv->pci_dev,
308 priv->dma_size, priv->dma_storage,
309 priv->dma_storage_dma);
313 pci_release_regions(pdev);
318 cancel_work_sync(&priv->tlan_tqueue);
321 static void tlan_start(struct net_device *dev)
323 tlan_reset_lists(dev);
324 /* NOTE: It might not be necessary to read the stats before a
325 reset if you don't care what the values are.
327 tlan_read_and_clear_stats(dev, TLAN_IGNORE);
328 tlan_reset_adapter(dev);
329 netif_wake_queue(dev);
332 static void tlan_stop(struct net_device *dev)
334 struct tlan_priv *priv = netdev_priv(dev);
336 del_timer_sync(&priv->media_timer);
337 tlan_read_and_clear_stats(dev, TLAN_RECORD);
338 outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
339 /* Reset and power down phy */
340 tlan_reset_adapter(dev);
341 if (priv->timer.function != NULL) {
342 del_timer_sync(&priv->timer);
343 priv->timer.function = NULL;
349 static int tlan_suspend(struct pci_dev *pdev, pm_message_t state)
351 struct net_device *dev = pci_get_drvdata(pdev);
353 if (netif_running(dev))
356 netif_device_detach(dev);
357 pci_save_state(pdev);
358 pci_disable_device(pdev);
359 pci_wake_from_d3(pdev, false);
360 pci_set_power_state(pdev, PCI_D3hot);
365 static int tlan_resume(struct pci_dev *pdev)
367 struct net_device *dev = pci_get_drvdata(pdev);
369 pci_set_power_state(pdev, PCI_D0);
370 pci_restore_state(pdev);
371 pci_enable_wake(pdev, PCI_D0, 0);
372 netif_device_attach(dev);
374 if (netif_running(dev))
380 #else /* CONFIG_PM */
382 #define tlan_suspend NULL
383 #define tlan_resume NULL
385 #endif /* CONFIG_PM */
388 static struct pci_driver tlan_driver = {
390 .id_table = tlan_pci_tbl,
391 .probe = tlan_init_one,
392 .remove = tlan_remove_one,
393 .suspend = tlan_suspend,
394 .resume = tlan_resume,
397 static int __init tlan_probe(void)
401 pr_info("%s", tlan_banner);
403 TLAN_DBG(TLAN_DEBUG_PROBE, "Starting PCI Probe....\n");
405 /* Use new style PCI probing. Now the kernel will
406 do most of this for us */
407 rc = pci_register_driver(&tlan_driver);
410 pr_err("Could not register pci driver\n");
411 goto err_out_pci_free;
414 TLAN_DBG(TLAN_DEBUG_PROBE, "Starting EISA Probe....\n");
417 pr_info("%d device%s installed, PCI: %d EISA: %d\n",
418 tlan_devices_installed, tlan_devices_installed == 1 ? "" : "s",
419 tlan_have_pci, tlan_have_eisa);
421 if (tlan_devices_installed == 0) {
423 goto err_out_pci_unreg;
428 pci_unregister_driver(&tlan_driver);
434 static int tlan_init_one(struct pci_dev *pdev,
435 const struct pci_device_id *ent)
437 return tlan_probe1(pdev, -1, -1, 0, ent);
442 ***************************************************************
446 * 0 on success, error code on error
450 * The name is lower case to fit in with all the rest of
451 * the netcard_probe names. This function looks for
452 * another TLan based adapter, setting it up with the
453 * allocated device struct if one is found.
454 * tlan_probe has been ported to the new net API and
455 * now allocates its own device structure. This function
456 * is also used by modules.
458 **************************************************************/
460 static int tlan_probe1(struct pci_dev *pdev, long ioaddr, int irq, int rev,
461 const struct pci_device_id *ent)
464 struct net_device *dev;
465 struct tlan_priv *priv;
467 int reg, rc = -ENODEV;
471 rc = pci_enable_device(pdev);
475 rc = pci_request_regions(pdev, tlan_signature);
477 pr_err("Could not reserve IO regions\n");
481 #endif /* CONFIG_PCI */
483 dev = alloc_etherdev(sizeof(struct tlan_priv));
486 goto err_out_regions;
488 SET_NETDEV_DEV(dev, &pdev->dev);
490 priv = netdev_priv(dev);
492 priv->pci_dev = pdev;
495 /* Is this a PCI device? */
499 priv->adapter = &board_info[ent->driver_data];
501 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
503 pr_err("No suitable PCI mapping available\n");
504 goto err_out_free_dev;
507 for (reg = 0; reg <= 5; reg++) {
508 if (pci_resource_flags(pdev, reg) & IORESOURCE_IO) {
509 pci_io_base = pci_resource_start(pdev, reg);
510 TLAN_DBG(TLAN_DEBUG_GNRL,
511 "IO mapping is available at %x.\n",
517 pr_err("No IO mappings available\n");
519 goto err_out_free_dev;
522 dev->base_addr = pci_io_base;
523 dev->irq = pdev->irq;
524 priv->adapter_rev = pdev->revision;
525 pci_set_master(pdev);
526 pci_set_drvdata(pdev, dev);
528 } else { /* EISA card */
529 /* This is a hack. We need to know which board structure
530 * is suited for this adapter */
531 device_id = inw(ioaddr + EISA_ID2);
532 if (device_id == 0x20F1) {
533 priv->adapter = &board_info[13]; /* NetFlex-3/E */
534 priv->adapter_rev = 23; /* TLAN 2.3 */
536 priv->adapter = &board_info[14];
537 priv->adapter_rev = 10; /* TLAN 1.0 */
539 dev->base_addr = ioaddr;
543 /* Kernel parameters */
544 if (dev->mem_start) {
545 priv->aui = dev->mem_start & 0x01;
546 priv->duplex = ((dev->mem_start & 0x06) == 0x06) ? 0
547 : (dev->mem_start & 0x06) >> 1;
548 priv->speed = ((dev->mem_start & 0x18) == 0x18) ? 0
549 : (dev->mem_start & 0x18) >> 3;
551 if (priv->speed == 0x1)
552 priv->speed = TLAN_SPEED_10;
553 else if (priv->speed == 0x2)
554 priv->speed = TLAN_SPEED_100;
556 debug = priv->debug = dev->mem_end;
558 priv->aui = aui[boards_found];
559 priv->speed = speed[boards_found];
560 priv->duplex = duplex[boards_found];
564 /* This will be used when we get an adapter error from
565 * within our irq handler */
566 INIT_WORK(&priv->tlan_tqueue, tlan_tx_timeout_work);
568 spin_lock_init(&priv->lock);
572 pr_err("Could not set up device\n");
573 goto err_out_free_dev;
576 rc = register_netdev(dev);
578 pr_err("Could not register device\n");
583 tlan_devices_installed++;
586 /* pdev is NULL if this is an EISA device */
590 priv->next_device = tlan_eisa_devices;
591 tlan_eisa_devices = dev;
595 netdev_info(dev, "irq=%2d, io=%04x, %s, Rev. %d\n",
598 priv->adapter->device_label,
603 pci_free_consistent(priv->pci_dev, priv->dma_size, priv->dma_storage,
604 priv->dma_storage_dma);
610 pci_release_regions(pdev);
614 pci_disable_device(pdev);
619 static void tlan_eisa_cleanup(void)
621 struct net_device *dev;
622 struct tlan_priv *priv;
624 while (tlan_have_eisa) {
625 dev = tlan_eisa_devices;
626 priv = netdev_priv(dev);
627 if (priv->dma_storage) {
628 pci_free_consistent(priv->pci_dev, priv->dma_size,
630 priv->dma_storage_dma);
632 release_region(dev->base_addr, 0x10);
633 unregister_netdev(dev);
634 tlan_eisa_devices = priv->next_device;
641 static void __exit tlan_exit(void)
643 pci_unregister_driver(&tlan_driver);
651 /* Module loading/unloading */
652 module_init(tlan_probe);
653 module_exit(tlan_exit);
657 /**************************************************************
660 * Returns: 0 on success, 1 otherwise
665 * This functions probes for EISA devices and calls
666 * TLan_probe1 when one is found.
668 *************************************************************/
670 static void __init tlan_eisa_probe(void)
678 TLAN_DBG(TLAN_DEBUG_PROBE, "No EISA bus present\n");
682 /* Loop through all slots of the EISA bus */
683 for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) {
685 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
686 (int) ioaddr + 0xc80, inw(ioaddr + EISA_ID));
687 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
688 (int) ioaddr + 0xc82, inw(ioaddr + EISA_ID2));
691 TLAN_DBG(TLAN_DEBUG_PROBE,
692 "Probing for EISA adapter at IO: 0x%4x : ",
694 if (request_region(ioaddr, 0x10, tlan_signature) == NULL)
697 if (inw(ioaddr + EISA_ID) != 0x110E) {
698 release_region(ioaddr, 0x10);
702 device_id = inw(ioaddr + EISA_ID2);
703 if (device_id != 0x20F1 && device_id != 0x40F1) {
704 release_region(ioaddr, 0x10);
708 /* check if adapter is enabled */
709 if (inb(ioaddr + EISA_CR) != 0x1) {
710 release_region(ioaddr, 0x10);
715 pr_info("Found one\n");
718 /* Get irq from board */
719 switch (inb(ioaddr + 0xcc0)) {
737 /* Setup the newly found eisa adapter */
738 rc = tlan_probe1(NULL, ioaddr, irq,
744 pr_info("None found\n");
749 pr_info("Card found but it is not enabled, skipping\n");
756 #ifdef CONFIG_NET_POLL_CONTROLLER
757 static void tlan_poll(struct net_device *dev)
759 disable_irq(dev->irq);
760 tlan_handle_interrupt(dev->irq, dev);
761 enable_irq(dev->irq);
765 static const struct net_device_ops tlan_netdev_ops = {
766 .ndo_open = tlan_open,
767 .ndo_stop = tlan_close,
768 .ndo_start_xmit = tlan_start_tx,
769 .ndo_tx_timeout = tlan_tx_timeout,
770 .ndo_get_stats = tlan_get_stats,
771 .ndo_set_rx_mode = tlan_set_multicast_list,
772 .ndo_do_ioctl = tlan_ioctl,
773 .ndo_change_mtu = eth_change_mtu,
774 .ndo_set_mac_address = eth_mac_addr,
775 .ndo_validate_addr = eth_validate_addr,
776 #ifdef CONFIG_NET_POLL_CONTROLLER
777 .ndo_poll_controller = tlan_poll,
781 static void tlan_get_drvinfo(struct net_device *dev,
782 struct ethtool_drvinfo *info)
784 struct tlan_priv *priv = netdev_priv(dev);
786 strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
788 strlcpy(info->bus_info, pci_name(priv->pci_dev),
789 sizeof(info->bus_info));
791 strlcpy(info->bus_info, "EISA", sizeof(info->bus_info));
792 info->eedump_len = TLAN_EEPROM_SIZE;
795 static int tlan_get_eeprom_len(struct net_device *dev)
797 return TLAN_EEPROM_SIZE;
800 static int tlan_get_eeprom(struct net_device *dev,
801 struct ethtool_eeprom *eeprom, u8 *data)
805 for (i = 0; i < TLAN_EEPROM_SIZE; i++)
806 if (tlan_ee_read_byte(dev, i, &data[i]))
812 static const struct ethtool_ops tlan_ethtool_ops = {
813 .get_drvinfo = tlan_get_drvinfo,
814 .get_link = ethtool_op_get_link,
815 .get_eeprom_len = tlan_get_eeprom_len,
816 .get_eeprom = tlan_get_eeprom,
819 /***************************************************************
823 * 0 on success, error code otherwise.
825 * dev The structure of the device to be
828 * This function completes the initialization of the
829 * device structure and driver. It reserves the IO
830 * addresses, allocates memory for the lists and bounce
831 * buffers, retrieves the MAC address from the eeprom
832 * and assignes the device's methods.
834 **************************************************************/
836 static int tlan_init(struct net_device *dev)
841 struct tlan_priv *priv;
843 priv = netdev_priv(dev);
845 dma_size = (TLAN_NUM_RX_LISTS + TLAN_NUM_TX_LISTS)
846 * (sizeof(struct tlan_list));
847 priv->dma_storage = pci_alloc_consistent(priv->pci_dev,
849 &priv->dma_storage_dma);
850 priv->dma_size = dma_size;
852 if (priv->dma_storage == NULL) {
853 pr_err("Could not allocate lists and buffers for %s\n",
857 memset(priv->dma_storage, 0, dma_size);
858 priv->rx_list = (struct tlan_list *)
859 ALIGN((unsigned long)priv->dma_storage, 8);
860 priv->rx_list_dma = ALIGN(priv->dma_storage_dma, 8);
861 priv->tx_list = priv->rx_list + TLAN_NUM_RX_LISTS;
863 priv->rx_list_dma + sizeof(struct tlan_list)*TLAN_NUM_RX_LISTS;
866 for (i = 0; i < ETH_ALEN; i++)
867 err |= tlan_ee_read_byte(dev,
868 (u8) priv->adapter->addr_ofs + i,
869 (u8 *) &dev->dev_addr[i]);
871 pr_err("%s: Error reading MAC from eeprom: %d\n",
874 /* Olicom OC-2325/OC-2326 have the address byte-swapped */
875 if (priv->adapter->addr_ofs == 0xf8) {
876 for (i = 0; i < ETH_ALEN; i += 2) {
877 char tmp = dev->dev_addr[i];
878 dev->dev_addr[i] = dev->dev_addr[i + 1];
879 dev->dev_addr[i + 1] = tmp;
883 netif_carrier_off(dev);
886 dev->netdev_ops = &tlan_netdev_ops;
887 dev->ethtool_ops = &tlan_ethtool_ops;
888 dev->watchdog_timeo = TX_TIMEOUT;
897 /***************************************************************
901 * 0 on success, error code otherwise.
903 * dev Structure of device to be opened.
905 * This routine puts the driver and TLAN adapter in a
906 * state where it is ready to send and receive packets.
907 * It allocates the IRQ, resets and brings the adapter
908 * out of reset, and allows interrupts. It also delays
909 * the startup for autonegotiation or sends a Rx GO
910 * command to the adapter, as appropriate.
912 **************************************************************/
914 static int tlan_open(struct net_device *dev)
916 struct tlan_priv *priv = netdev_priv(dev);
919 priv->tlan_rev = tlan_dio_read8(dev->base_addr, TLAN_DEF_REVISION);
920 err = request_irq(dev->irq, tlan_handle_interrupt, IRQF_SHARED,
924 netdev_err(dev, "Cannot open because IRQ %d is already in use\n",
929 init_timer(&priv->timer);
930 init_timer(&priv->media_timer);
934 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Opened. TLAN Chip Rev: %x\n",
935 dev->name, priv->tlan_rev);
943 /**************************************************************
947 * 0 on success, error code otherwise
949 * dev structure of device to receive ioctl.
951 * rq ifreq structure to hold userspace data.
956 *************************************************************/
958 static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
960 struct tlan_priv *priv = netdev_priv(dev);
961 struct mii_ioctl_data *data = if_mii(rq);
962 u32 phy = priv->phy[priv->phy_num];
964 if (!priv->phy_online)
968 case SIOCGMIIPHY: /* get address of MII PHY in use. */
972 case SIOCGMIIREG: /* read MII PHY register. */
973 tlan_mii_read_reg(dev, data->phy_id & 0x1f,
974 data->reg_num & 0x1f, &data->val_out);
978 case SIOCSMIIREG: /* write MII PHY register. */
979 tlan_mii_write_reg(dev, data->phy_id & 0x1f,
980 data->reg_num & 0x1f, data->val_in);
988 /***************************************************************
994 * dev structure of device which timed out
997 **************************************************************/
999 static void tlan_tx_timeout(struct net_device *dev)
1002 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Transmit timed out.\n", dev->name);
1004 /* Ok so we timed out, lets see what we can do about it...*/
1005 tlan_free_lists(dev);
1006 tlan_reset_lists(dev);
1007 tlan_read_and_clear_stats(dev, TLAN_IGNORE);
1008 tlan_reset_adapter(dev);
1009 dev->trans_start = jiffies; /* prevent tx timeout */
1010 netif_wake_queue(dev);
1015 /***************************************************************
1016 * tlan_tx_timeout_work
1021 * work work item of device which timed out
1023 **************************************************************/
1025 static void tlan_tx_timeout_work(struct work_struct *work)
1027 struct tlan_priv *priv =
1028 container_of(work, struct tlan_priv, tlan_tqueue);
1030 tlan_tx_timeout(priv->dev);
1035 /***************************************************************
1039 * 0 on success, non-zero on failure.
1041 * skb A pointer to the sk_buff containing the
1043 * dev The device to send the data on.
1045 * This function adds a frame to the Tx list to be sent
1046 * ASAP. First it verifies that the adapter is ready and
1047 * there is room in the queue. Then it sets up the next
1048 * available list, copies the frame to the corresponding
1049 * buffer. If the adapter Tx channel is idle, it gives
1050 * the adapter a Tx Go command on the list, otherwise it
1051 * sets the forward address of the previous list to point
1052 * to this one. Then it frees the sk_buff.
1054 **************************************************************/
1056 static netdev_tx_t tlan_start_tx(struct sk_buff *skb, struct net_device *dev)
1058 struct tlan_priv *priv = netdev_priv(dev);
1059 dma_addr_t tail_list_phys;
1060 struct tlan_list *tail_list;
1061 unsigned long flags;
1064 if (!priv->phy_online) {
1065 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s PHY is not ready\n",
1067 dev_kfree_skb_any(skb);
1068 return NETDEV_TX_OK;
1071 if (skb_padto(skb, TLAN_MIN_FRAME_SIZE))
1072 return NETDEV_TX_OK;
1073 txlen = max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE);
1075 tail_list = priv->tx_list + priv->tx_tail;
1077 priv->tx_list_dma + sizeof(struct tlan_list)*priv->tx_tail;
1079 if (tail_list->c_stat != TLAN_CSTAT_UNUSED) {
1080 TLAN_DBG(TLAN_DEBUG_TX,
1081 "TRANSMIT: %s is busy (Head=%d Tail=%d)\n",
1082 dev->name, priv->tx_head, priv->tx_tail);
1083 netif_stop_queue(dev);
1084 priv->tx_busy_count++;
1085 return NETDEV_TX_BUSY;
1088 tail_list->forward = 0;
1090 tail_list->buffer[0].address = pci_map_single(priv->pci_dev,
1093 tlan_store_skb(tail_list, skb);
1095 tail_list->frame_size = (u16) txlen;
1096 tail_list->buffer[0].count = TLAN_LAST_BUFFER | (u32) txlen;
1097 tail_list->buffer[1].count = 0;
1098 tail_list->buffer[1].address = 0;
1100 spin_lock_irqsave(&priv->lock, flags);
1101 tail_list->c_stat = TLAN_CSTAT_READY;
1102 if (!priv->tx_in_progress) {
1103 priv->tx_in_progress = 1;
1104 TLAN_DBG(TLAN_DEBUG_TX,
1105 "TRANSMIT: Starting TX on buffer %d\n",
1107 outl(tail_list_phys, dev->base_addr + TLAN_CH_PARM);
1108 outl(TLAN_HC_GO, dev->base_addr + TLAN_HOST_CMD);
1110 TLAN_DBG(TLAN_DEBUG_TX,
1111 "TRANSMIT: Adding buffer %d to TX channel\n",
1113 if (priv->tx_tail == 0) {
1114 (priv->tx_list + (TLAN_NUM_TX_LISTS - 1))->forward
1117 (priv->tx_list + (priv->tx_tail - 1))->forward
1121 spin_unlock_irqrestore(&priv->lock, flags);
1123 CIRC_INC(priv->tx_tail, TLAN_NUM_TX_LISTS);
1125 return NETDEV_TX_OK;
1132 /***************************************************************
1133 * tlan_handle_interrupt
1138 * irq The line on which the interrupt
1140 * dev_id A pointer to the device assigned to
1143 * This function handles an interrupt generated by its
1144 * assigned TLAN adapter. The function deactivates
1145 * interrupts on its adapter, records the type of
1146 * interrupt, executes the appropriate subhandler, and
1147 * acknowdges the interrupt to the adapter (thus
1148 * re-enabling adapter interrupts.
1150 **************************************************************/
1152 static irqreturn_t tlan_handle_interrupt(int irq, void *dev_id)
1154 struct net_device *dev = dev_id;
1155 struct tlan_priv *priv = netdev_priv(dev);
1159 spin_lock(&priv->lock);
1161 host_int = inw(dev->base_addr + TLAN_HOST_INT);
1162 type = (host_int & TLAN_HI_IT_MASK) >> 2;
1167 outw(host_int, dev->base_addr + TLAN_HOST_INT);
1168 ack = tlan_int_vector[type](dev, host_int);
1171 host_cmd = TLAN_HC_ACK | ack | (type << 18);
1172 outl(host_cmd, dev->base_addr + TLAN_HOST_CMD);
1176 spin_unlock(&priv->lock);
1178 return IRQ_RETVAL(type);
1184 /***************************************************************
1190 * dev The device structure of the device to
1193 * This function shuts down the adapter. It records any
1194 * stats, puts the adapter into reset state, deactivates
1195 * its time as needed, and frees the irq it is using.
1197 **************************************************************/
1199 static int tlan_close(struct net_device *dev)
1203 free_irq(dev->irq, dev);
1204 tlan_free_lists(dev);
1205 TLAN_DBG(TLAN_DEBUG_GNRL, "Device %s closed.\n", dev->name);
1214 /***************************************************************
1218 * A pointer to the device's statistics structure.
1220 * dev The device structure to return the
1223 * This function updates the devices statistics by reading
1224 * the TLAN chip's onboard registers. Then it returns the
1225 * address of the statistics structure.
1227 **************************************************************/
1229 static struct net_device_stats *tlan_get_stats(struct net_device *dev)
1231 struct tlan_priv *priv = netdev_priv(dev);
1234 /* Should only read stats if open ? */
1235 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1237 TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: %s EOC count = %d\n", dev->name,
1238 priv->rx_eoc_count);
1239 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s Busy count = %d\n", dev->name,
1240 priv->tx_busy_count);
1241 if (debug & TLAN_DEBUG_GNRL) {
1242 tlan_print_dio(dev->base_addr);
1243 tlan_phy_print(dev);
1245 if (debug & TLAN_DEBUG_LIST) {
1246 for (i = 0; i < TLAN_NUM_RX_LISTS; i++)
1247 tlan_print_list(priv->rx_list + i, "RX", i);
1248 for (i = 0; i < TLAN_NUM_TX_LISTS; i++)
1249 tlan_print_list(priv->tx_list + i, "TX", i);
1259 /***************************************************************
1260 * tlan_set_multicast_list
1265 * dev The device structure to set the
1266 * multicast list for.
1268 * This function sets the TLAN adaptor to various receive
1269 * modes. If the IFF_PROMISC flag is set, promiscuous
1270 * mode is acitviated. Otherwise, promiscuous mode is
1271 * turned off. If the IFF_ALLMULTI flag is set, then
1272 * the hash table is set to receive all group addresses.
1273 * Otherwise, the first three multicast addresses are
1274 * stored in AREG_1-3, and the rest are selected via the
1275 * hash table, as necessary.
1277 **************************************************************/
1279 static void tlan_set_multicast_list(struct net_device *dev)
1281 struct netdev_hw_addr *ha;
1288 if (dev->flags & IFF_PROMISC) {
1289 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1290 tlan_dio_write8(dev->base_addr,
1291 TLAN_NET_CMD, tmp | TLAN_NET_CMD_CAF);
1293 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1294 tlan_dio_write8(dev->base_addr,
1295 TLAN_NET_CMD, tmp & ~TLAN_NET_CMD_CAF);
1296 if (dev->flags & IFF_ALLMULTI) {
1297 for (i = 0; i < 3; i++)
1298 tlan_set_mac(dev, i + 1, NULL);
1299 tlan_dio_write32(dev->base_addr, TLAN_HASH_1,
1301 tlan_dio_write32(dev->base_addr, TLAN_HASH_2,
1305 netdev_for_each_mc_addr(ha, dev) {
1307 tlan_set_mac(dev, i + 1,
1308 (char *) &ha->addr);
1311 tlan_hash_func((u8 *)&ha->addr);
1313 hash1 |= (1 << offset);
1315 hash2 |= (1 << (offset - 32));
1320 tlan_set_mac(dev, i + 1, NULL);
1321 tlan_dio_write32(dev->base_addr, TLAN_HASH_1, hash1);
1322 tlan_dio_write32(dev->base_addr, TLAN_HASH_2, hash2);
1330 /*****************************************************************************
1331 ******************************************************************************
1333 ThunderLAN driver interrupt vectors and table
1335 please see chap. 4, "Interrupt Handling" of the "ThunderLAN
1336 Programmer's Guide" for more informations on handling interrupts
1337 generated by TLAN based adapters.
1339 ******************************************************************************
1340 *****************************************************************************/
1345 /***************************************************************
1346 * tlan_handle_tx_eof
1351 * dev Device assigned the IRQ that was
1353 * host_int The contents of the HOST_INT
1356 * This function handles Tx EOF interrupts which are raised
1357 * by the adapter when it has completed sending the
1358 * contents of a buffer. If detemines which list/buffer
1359 * was completed and resets it. If the buffer was the last
1360 * in the channel (EOC), then the function checks to see if
1361 * another buffer is ready to send, and if so, sends a Tx
1362 * Go command. Finally, the driver activates/continues the
1365 **************************************************************/
1367 static u32 tlan_handle_tx_eof(struct net_device *dev, u16 host_int)
1369 struct tlan_priv *priv = netdev_priv(dev);
1371 struct tlan_list *head_list;
1372 dma_addr_t head_list_phys;
1376 TLAN_DBG(TLAN_DEBUG_TX,
1377 "TRANSMIT: Handling TX EOF (Head=%d Tail=%d)\n",
1378 priv->tx_head, priv->tx_tail);
1379 head_list = priv->tx_list + priv->tx_head;
1381 while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1383 struct sk_buff *skb = tlan_get_skb(head_list);
1386 pci_unmap_single(priv->pci_dev, head_list->buffer[0].address,
1388 (unsigned int)TLAN_MIN_FRAME_SIZE),
1390 dev_kfree_skb_any(skb);
1391 head_list->buffer[8].address = 0;
1392 head_list->buffer[9].address = 0;
1394 if (tmp_c_stat & TLAN_CSTAT_EOC)
1397 dev->stats.tx_bytes += head_list->frame_size;
1399 head_list->c_stat = TLAN_CSTAT_UNUSED;
1400 netif_start_queue(dev);
1401 CIRC_INC(priv->tx_head, TLAN_NUM_TX_LISTS);
1402 head_list = priv->tx_list + priv->tx_head;
1407 "Received interrupt for uncompleted TX frame\n");
1410 TLAN_DBG(TLAN_DEBUG_TX,
1411 "TRANSMIT: handling TX EOC (Head=%d Tail=%d)\n",
1412 priv->tx_head, priv->tx_tail);
1413 head_list = priv->tx_list + priv->tx_head;
1414 head_list_phys = priv->tx_list_dma
1415 + sizeof(struct tlan_list)*priv->tx_head;
1416 if ((head_list->c_stat & TLAN_CSTAT_READY)
1417 == TLAN_CSTAT_READY) {
1418 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1421 priv->tx_in_progress = 0;
1425 if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1426 tlan_dio_write8(dev->base_addr,
1427 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1428 if (priv->timer.function == NULL) {
1429 priv->timer.function = tlan_timer;
1430 priv->timer.data = (unsigned long) dev;
1431 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1432 priv->timer_set_at = jiffies;
1433 priv->timer_type = TLAN_TIMER_ACTIVITY;
1434 add_timer(&priv->timer);
1435 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1436 priv->timer_set_at = jiffies;
1447 /***************************************************************
1448 * TLan_HandleStatOverflow
1453 * dev Device assigned the IRQ that was
1455 * host_int The contents of the HOST_INT
1458 * This function handles the Statistics Overflow interrupt
1459 * which means that one or more of the TLAN statistics
1460 * registers has reached 1/2 capacity and needs to be read.
1462 **************************************************************/
1464 static u32 tlan_handle_stat_overflow(struct net_device *dev, u16 host_int)
1466 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1475 /***************************************************************
1481 * dev Device assigned the IRQ that was
1483 * host_int The contents of the HOST_INT
1486 * This function handles the Rx EOF interrupt which
1487 * indicates a frame has been received by the adapter from
1488 * the net and the frame has been transferred to memory.
1489 * The function determines the bounce buffer the frame has
1490 * been loaded into, creates a new sk_buff big enough to
1491 * hold the frame, and sends it to protocol stack. It
1492 * then resets the used buffer and appends it to the end
1493 * of the list. If the frame was the last in the Rx
1494 * channel (EOC), the function restarts the receive channel
1495 * by sending an Rx Go command to the adapter. Then it
1496 * activates/continues the activity LED.
1498 **************************************************************/
1500 static u32 tlan_handle_rx_eof(struct net_device *dev, u16 host_int)
1502 struct tlan_priv *priv = netdev_priv(dev);
1505 struct tlan_list *head_list;
1506 struct sk_buff *skb;
1507 struct tlan_list *tail_list;
1509 dma_addr_t head_list_phys;
1511 TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: handling RX EOF (Head=%d Tail=%d)\n",
1512 priv->rx_head, priv->rx_tail);
1513 head_list = priv->rx_list + priv->rx_head;
1515 priv->rx_list_dma + sizeof(struct tlan_list)*priv->rx_head;
1517 while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1519 dma_addr_t frame_dma = head_list->buffer[0].address;
1520 u32 frame_size = head_list->frame_size;
1521 struct sk_buff *new_skb;
1524 if (tmp_c_stat & TLAN_CSTAT_EOC)
1527 new_skb = netdev_alloc_skb_ip_align(dev,
1528 TLAN_MAX_FRAME_SIZE + 5);
1530 goto drop_and_reuse;
1532 skb = tlan_get_skb(head_list);
1533 pci_unmap_single(priv->pci_dev, frame_dma,
1534 TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
1535 skb_put(skb, frame_size);
1537 dev->stats.rx_bytes += frame_size;
1539 skb->protocol = eth_type_trans(skb, dev);
1542 head_list->buffer[0].address =
1543 pci_map_single(priv->pci_dev, new_skb->data,
1544 TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
1546 tlan_store_skb(head_list, new_skb);
1548 head_list->forward = 0;
1549 head_list->c_stat = 0;
1550 tail_list = priv->rx_list + priv->rx_tail;
1551 tail_list->forward = head_list_phys;
1553 CIRC_INC(priv->rx_head, TLAN_NUM_RX_LISTS);
1554 CIRC_INC(priv->rx_tail, TLAN_NUM_RX_LISTS);
1555 head_list = priv->rx_list + priv->rx_head;
1556 head_list_phys = priv->rx_list_dma
1557 + sizeof(struct tlan_list)*priv->rx_head;
1562 "Received interrupt for uncompleted RX frame\n");
1566 TLAN_DBG(TLAN_DEBUG_RX,
1567 "RECEIVE: handling RX EOC (Head=%d Tail=%d)\n",
1568 priv->rx_head, priv->rx_tail);
1569 head_list = priv->rx_list + priv->rx_head;
1570 head_list_phys = priv->rx_list_dma
1571 + sizeof(struct tlan_list)*priv->rx_head;
1572 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1573 ack |= TLAN_HC_GO | TLAN_HC_RT;
1574 priv->rx_eoc_count++;
1577 if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1578 tlan_dio_write8(dev->base_addr,
1579 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1580 if (priv->timer.function == NULL) {
1581 priv->timer.function = tlan_timer;
1582 priv->timer.data = (unsigned long) dev;
1583 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1584 priv->timer_set_at = jiffies;
1585 priv->timer_type = TLAN_TIMER_ACTIVITY;
1586 add_timer(&priv->timer);
1587 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1588 priv->timer_set_at = jiffies;
1599 /***************************************************************
1605 * dev Device assigned the IRQ that was
1607 * host_int The contents of the HOST_INT
1610 * This function handles the Dummy interrupt, which is
1611 * raised whenever a test interrupt is generated by setting
1612 * the Req_Int bit of HOST_CMD to 1.
1614 **************************************************************/
1616 static u32 tlan_handle_dummy(struct net_device *dev, u16 host_int)
1618 netdev_info(dev, "Test interrupt\n");
1626 /***************************************************************
1627 * tlan_handle_tx_eoc
1632 * dev Device assigned the IRQ that was
1634 * host_int The contents of the HOST_INT
1637 * This driver is structured to determine EOC occurrences by
1638 * reading the CSTAT member of the list structure. Tx EOC
1639 * interrupts are disabled via the DIO INTDIS register.
1640 * However, TLAN chips before revision 3.0 didn't have this
1641 * functionality, so process EOC events if this is the
1644 **************************************************************/
1646 static u32 tlan_handle_tx_eoc(struct net_device *dev, u16 host_int)
1648 struct tlan_priv *priv = netdev_priv(dev);
1649 struct tlan_list *head_list;
1650 dma_addr_t head_list_phys;
1654 if (priv->tlan_rev < 0x30) {
1655 TLAN_DBG(TLAN_DEBUG_TX,
1656 "TRANSMIT: handling TX EOC (Head=%d Tail=%d) -- IRQ\n",
1657 priv->tx_head, priv->tx_tail);
1658 head_list = priv->tx_list + priv->tx_head;
1659 head_list_phys = priv->tx_list_dma
1660 + sizeof(struct tlan_list)*priv->tx_head;
1661 if ((head_list->c_stat & TLAN_CSTAT_READY)
1662 == TLAN_CSTAT_READY) {
1663 netif_stop_queue(dev);
1664 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1667 priv->tx_in_progress = 0;
1678 /***************************************************************
1679 * tlan_handle_status_check
1682 * 0 if Adapter check, 1 if Network Status check.
1684 * dev Device assigned the IRQ that was
1686 * host_int The contents of the HOST_INT
1689 * This function handles Adapter Check/Network Status
1690 * interrupts generated by the adapter. It checks the
1691 * vector in the HOST_INT register to determine if it is
1692 * an Adapter Check interrupt. If so, it resets the
1693 * adapter. Otherwise it clears the status registers
1694 * and services the PHY.
1696 **************************************************************/
1698 static u32 tlan_handle_status_check(struct net_device *dev, u16 host_int)
1700 struct tlan_priv *priv = netdev_priv(dev);
1709 if (host_int & TLAN_HI_IV_MASK) {
1710 netif_stop_queue(dev);
1711 error = inl(dev->base_addr + TLAN_CH_PARM);
1712 netdev_info(dev, "Adaptor Error = 0x%x\n", error);
1713 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1714 outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
1716 schedule_work(&priv->tlan_tqueue);
1718 netif_wake_queue(dev);
1721 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Status Check\n", dev->name);
1722 phy = priv->phy[priv->phy_num];
1724 net_sts = tlan_dio_read8(dev->base_addr, TLAN_NET_STS);
1726 tlan_dio_write8(dev->base_addr, TLAN_NET_STS, net_sts);
1727 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Net_Sts = %x\n",
1728 dev->name, (unsigned) net_sts);
1730 if ((net_sts & TLAN_NET_STS_MIRQ) && (priv->phy_num == 0)) {
1731 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_STS, &tlphy_sts);
1732 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
1733 if (!(tlphy_sts & TLAN_TS_POLOK) &&
1734 !(tlphy_ctl & TLAN_TC_SWAPOL)) {
1735 tlphy_ctl |= TLAN_TC_SWAPOL;
1736 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1738 } else if ((tlphy_sts & TLAN_TS_POLOK) &&
1739 (tlphy_ctl & TLAN_TC_SWAPOL)) {
1740 tlphy_ctl &= ~TLAN_TC_SWAPOL;
1741 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1746 tlan_phy_print(dev);
1757 /***************************************************************
1758 * tlan_handle_rx_eoc
1763 * dev Device assigned the IRQ that was
1765 * host_int The contents of the HOST_INT
1768 * This driver is structured to determine EOC occurrences by
1769 * reading the CSTAT member of the list structure. Rx EOC
1770 * interrupts are disabled via the DIO INTDIS register.
1771 * However, TLAN chips before revision 3.0 didn't have this
1772 * CSTAT member or a INTDIS register, so if this chip is
1773 * pre-3.0, process EOC interrupts normally.
1775 **************************************************************/
1777 static u32 tlan_handle_rx_eoc(struct net_device *dev, u16 host_int)
1779 struct tlan_priv *priv = netdev_priv(dev);
1780 dma_addr_t head_list_phys;
1783 if (priv->tlan_rev < 0x30) {
1784 TLAN_DBG(TLAN_DEBUG_RX,
1785 "RECEIVE: Handling RX EOC (head=%d tail=%d) -- IRQ\n",
1786 priv->rx_head, priv->rx_tail);
1787 head_list_phys = priv->rx_list_dma
1788 + sizeof(struct tlan_list)*priv->rx_head;
1789 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1790 ack |= TLAN_HC_GO | TLAN_HC_RT;
1791 priv->rx_eoc_count++;
1801 /*****************************************************************************
1802 ******************************************************************************
1804 ThunderLAN driver timer function
1806 ******************************************************************************
1807 *****************************************************************************/
1810 /***************************************************************
1816 * data A value given to add timer when
1817 * add_timer was called.
1819 * This function handles timed functionality for the
1820 * TLAN driver. The two current timer uses are for
1821 * delaying for autonegotionation and driving the ACT LED.
1822 * - Autonegotiation requires being allowed about
1823 * 2 1/2 seconds before attempting to transmit a
1824 * packet. It would be a very bad thing to hang
1825 * the kernel this long, so the driver doesn't
1826 * allow transmission 'til after this time, for
1827 * certain PHYs. It would be much nicer if all
1828 * PHYs were interrupt-capable like the internal
1830 * - The ACT LED, which shows adapter activity, is
1831 * driven by the driver, and so must be left on
1832 * for a short period to power up the LED so it
1833 * can be seen. This delay can be changed by
1834 * changing the TLAN_TIMER_ACT_DELAY in tlan.h,
1835 * if desired. 100 ms produces a slightly
1836 * sluggish response.
1838 **************************************************************/
1840 static void tlan_timer(unsigned long data)
1842 struct net_device *dev = (struct net_device *) data;
1843 struct tlan_priv *priv = netdev_priv(dev);
1845 unsigned long flags = 0;
1847 priv->timer.function = NULL;
1849 switch (priv->timer_type) {
1850 case TLAN_TIMER_PHY_PDOWN:
1851 tlan_phy_power_down(dev);
1853 case TLAN_TIMER_PHY_PUP:
1854 tlan_phy_power_up(dev);
1856 case TLAN_TIMER_PHY_RESET:
1857 tlan_phy_reset(dev);
1859 case TLAN_TIMER_PHY_START_LINK:
1860 tlan_phy_start_link(dev);
1862 case TLAN_TIMER_PHY_FINISH_AN:
1863 tlan_phy_finish_auto_neg(dev);
1865 case TLAN_TIMER_FINISH_RESET:
1866 tlan_finish_reset(dev);
1868 case TLAN_TIMER_ACTIVITY:
1869 spin_lock_irqsave(&priv->lock, flags);
1870 if (priv->timer.function == NULL) {
1871 elapsed = jiffies - priv->timer_set_at;
1872 if (elapsed >= TLAN_TIMER_ACT_DELAY) {
1873 tlan_dio_write8(dev->base_addr,
1874 TLAN_LED_REG, TLAN_LED_LINK);
1876 priv->timer.function = tlan_timer;
1877 priv->timer.expires = priv->timer_set_at
1878 + TLAN_TIMER_ACT_DELAY;
1879 spin_unlock_irqrestore(&priv->lock, flags);
1880 add_timer(&priv->timer);
1884 spin_unlock_irqrestore(&priv->lock, flags);
1893 /*****************************************************************************
1894 ******************************************************************************
1896 ThunderLAN driver adapter related routines
1898 ******************************************************************************
1899 *****************************************************************************/
1902 /***************************************************************
1908 * dev The device structure with the list
1909 * stuctures to be reset.
1911 * This routine sets the variables associated with managing
1912 * the TLAN lists to their initial values.
1914 **************************************************************/
1916 static void tlan_reset_lists(struct net_device *dev)
1918 struct tlan_priv *priv = netdev_priv(dev);
1920 struct tlan_list *list;
1921 dma_addr_t list_phys;
1922 struct sk_buff *skb;
1926 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1927 list = priv->tx_list + i;
1928 list->c_stat = TLAN_CSTAT_UNUSED;
1929 list->buffer[0].address = 0;
1930 list->buffer[2].count = 0;
1931 list->buffer[2].address = 0;
1932 list->buffer[8].address = 0;
1933 list->buffer[9].address = 0;
1937 priv->rx_tail = TLAN_NUM_RX_LISTS - 1;
1938 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1939 list = priv->rx_list + i;
1940 list_phys = priv->rx_list_dma + sizeof(struct tlan_list)*i;
1941 list->c_stat = TLAN_CSTAT_READY;
1942 list->frame_size = TLAN_MAX_FRAME_SIZE;
1943 list->buffer[0].count = TLAN_MAX_FRAME_SIZE | TLAN_LAST_BUFFER;
1944 skb = netdev_alloc_skb_ip_align(dev, TLAN_MAX_FRAME_SIZE + 5);
1948 list->buffer[0].address = pci_map_single(priv->pci_dev,
1950 TLAN_MAX_FRAME_SIZE,
1951 PCI_DMA_FROMDEVICE);
1952 tlan_store_skb(list, skb);
1953 list->buffer[1].count = 0;
1954 list->buffer[1].address = 0;
1955 list->forward = list_phys + sizeof(struct tlan_list);
1958 /* in case ran out of memory early, clear bits */
1959 while (i < TLAN_NUM_RX_LISTS) {
1960 tlan_store_skb(priv->rx_list + i, NULL);
1968 static void tlan_free_lists(struct net_device *dev)
1970 struct tlan_priv *priv = netdev_priv(dev);
1972 struct tlan_list *list;
1973 struct sk_buff *skb;
1975 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1976 list = priv->tx_list + i;
1977 skb = tlan_get_skb(list);
1981 list->buffer[0].address,
1983 (unsigned int)TLAN_MIN_FRAME_SIZE),
1985 dev_kfree_skb_any(skb);
1986 list->buffer[8].address = 0;
1987 list->buffer[9].address = 0;
1991 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1992 list = priv->rx_list + i;
1993 skb = tlan_get_skb(list);
1995 pci_unmap_single(priv->pci_dev,
1996 list->buffer[0].address,
1997 TLAN_MAX_FRAME_SIZE,
1998 PCI_DMA_FROMDEVICE);
1999 dev_kfree_skb_any(skb);
2000 list->buffer[8].address = 0;
2001 list->buffer[9].address = 0;
2009 /***************************************************************
2015 * io_base Base IO port of the device of
2016 * which to print DIO registers.
2018 * This function prints out all the internal (DIO)
2019 * registers of a TLAN chip.
2021 **************************************************************/
2023 static void tlan_print_dio(u16 io_base)
2028 pr_info("Contents of internal registers for io base 0x%04hx\n",
2030 pr_info("Off. +0 +4\n");
2031 for (i = 0; i < 0x4C; i += 8) {
2032 data0 = tlan_dio_read32(io_base, i);
2033 data1 = tlan_dio_read32(io_base, i + 0x4);
2034 pr_info("0x%02x 0x%08x 0x%08x\n", i, data0, data1);
2042 /***************************************************************
2048 * list A pointer to the struct tlan_list structure to
2050 * type A string to designate type of list,
2052 * num The index of the list.
2054 * This function prints out the contents of the list
2055 * pointed to by the list parameter.
2057 **************************************************************/
2059 static void tlan_print_list(struct tlan_list *list, char *type, int num)
2063 pr_info("%s List %d at %p\n", type, num, list);
2064 pr_info(" Forward = 0x%08x\n", list->forward);
2065 pr_info(" CSTAT = 0x%04hx\n", list->c_stat);
2066 pr_info(" Frame Size = 0x%04hx\n", list->frame_size);
2067 /* for (i = 0; i < 10; i++) { */
2068 for (i = 0; i < 2; i++) {
2069 pr_info(" Buffer[%d].count, addr = 0x%08x, 0x%08x\n",
2070 i, list->buffer[i].count, list->buffer[i].address);
2078 /***************************************************************
2079 * tlan_read_and_clear_stats
2084 * dev Pointer to device structure of adapter
2085 * to which to read stats.
2086 * record Flag indicating whether to add
2088 * This functions reads all the internal status registers
2089 * of the TLAN chip, which clears them as a side effect.
2090 * It then either adds the values to the device's status
2091 * struct, or discards them, depending on whether record
2092 * is TLAN_RECORD (!=0) or TLAN_IGNORE (==0).
2094 **************************************************************/
2096 static void tlan_read_and_clear_stats(struct net_device *dev, int record)
2098 u32 tx_good, tx_under;
2099 u32 rx_good, rx_over;
2100 u32 def_tx, crc, code;
2101 u32 multi_col, single_col;
2102 u32 excess_col, late_col, loss;
2104 outw(TLAN_GOOD_TX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2105 tx_good = inb(dev->base_addr + TLAN_DIO_DATA);
2106 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2107 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2108 tx_under = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2110 outw(TLAN_GOOD_RX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2111 rx_good = inb(dev->base_addr + TLAN_DIO_DATA);
2112 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2113 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2114 rx_over = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2116 outw(TLAN_DEFERRED_TX, dev->base_addr + TLAN_DIO_ADR);
2117 def_tx = inb(dev->base_addr + TLAN_DIO_DATA);
2118 def_tx += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2119 crc = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2120 code = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2122 outw(TLAN_MULTICOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2123 multi_col = inb(dev->base_addr + TLAN_DIO_DATA);
2124 multi_col += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2125 single_col = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2126 single_col += inb(dev->base_addr + TLAN_DIO_DATA + 3) << 8;
2128 outw(TLAN_EXCESSCOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2129 excess_col = inb(dev->base_addr + TLAN_DIO_DATA);
2130 late_col = inb(dev->base_addr + TLAN_DIO_DATA + 1);
2131 loss = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2134 dev->stats.rx_packets += rx_good;
2135 dev->stats.rx_errors += rx_over + crc + code;
2136 dev->stats.tx_packets += tx_good;
2137 dev->stats.tx_errors += tx_under + loss;
2138 dev->stats.collisions += multi_col
2139 + single_col + excess_col + late_col;
2141 dev->stats.rx_over_errors += rx_over;
2142 dev->stats.rx_crc_errors += crc;
2143 dev->stats.rx_frame_errors += code;
2145 dev->stats.tx_aborted_errors += tx_under;
2146 dev->stats.tx_carrier_errors += loss;
2154 /***************************************************************
2160 * dev Pointer to device structure of adapter
2163 * This function resets the adapter and it's physical
2164 * device. See Chap. 3, pp. 9-10 of the "ThunderLAN
2165 * Programmer's Guide" for details. The routine tries to
2166 * implement what is detailed there, though adjustments
2169 **************************************************************/
2172 tlan_reset_adapter(struct net_device *dev)
2174 struct tlan_priv *priv = netdev_priv(dev);
2180 priv->tlan_full_duplex = false;
2181 priv->phy_online = 0;
2182 netif_carrier_off(dev);
2184 /* 1. Assert reset bit. */
2186 data = inl(dev->base_addr + TLAN_HOST_CMD);
2187 data |= TLAN_HC_AD_RST;
2188 outl(data, dev->base_addr + TLAN_HOST_CMD);
2192 /* 2. Turn off interrupts. (Probably isn't necessary) */
2194 data = inl(dev->base_addr + TLAN_HOST_CMD);
2195 data |= TLAN_HC_INT_OFF;
2196 outl(data, dev->base_addr + TLAN_HOST_CMD);
2198 /* 3. Clear AREGs and HASHs. */
2200 for (i = TLAN_AREG_0; i <= TLAN_HASH_2; i += 4)
2201 tlan_dio_write32(dev->base_addr, (u16) i, 0);
2203 /* 4. Setup NetConfig register. */
2205 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN;
2206 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2208 /* 5. Load Ld_Tmr and Ld_Thr in HOST_CMD. */
2210 outl(TLAN_HC_LD_TMR | 0x3f, dev->base_addr + TLAN_HOST_CMD);
2211 outl(TLAN_HC_LD_THR | 0x9, dev->base_addr + TLAN_HOST_CMD);
2213 /* 6. Unreset the MII by setting NMRST (in NetSio) to 1. */
2215 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2216 addr = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2217 tlan_set_bit(TLAN_NET_SIO_NMRST, addr);
2219 /* 7. Setup the remaining registers. */
2221 if (priv->tlan_rev >= 0x30) {
2222 data8 = TLAN_ID_TX_EOC | TLAN_ID_RX_EOC;
2223 tlan_dio_write8(dev->base_addr, TLAN_INT_DIS, data8);
2225 tlan_phy_detect(dev);
2226 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN;
2228 if (priv->adapter->flags & TLAN_ADAPTER_BIT_RATE_PHY) {
2229 data |= TLAN_NET_CFG_BIT;
2230 if (priv->aui == 1) {
2231 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x0a);
2232 } else if (priv->duplex == TLAN_DUPLEX_FULL) {
2233 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x00);
2234 priv->tlan_full_duplex = true;
2236 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x08);
2240 if (priv->phy_num == 0)
2241 data |= TLAN_NET_CFG_PHY_EN;
2242 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2244 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY)
2245 tlan_finish_reset(dev);
2247 tlan_phy_power_down(dev);
2255 tlan_finish_reset(struct net_device *dev)
2257 struct tlan_priv *priv = netdev_priv(dev);
2265 u16 tlphy_id1, tlphy_id2;
2268 phy = priv->phy[priv->phy_num];
2270 data = TLAN_NET_CMD_NRESET | TLAN_NET_CMD_NWRAP;
2271 if (priv->tlan_full_duplex)
2272 data |= TLAN_NET_CMD_DUPLEX;
2273 tlan_dio_write8(dev->base_addr, TLAN_NET_CMD, data);
2274 data = TLAN_NET_MASK_MASK4 | TLAN_NET_MASK_MASK5;
2275 if (priv->phy_num == 0)
2276 data |= TLAN_NET_MASK_MASK7;
2277 tlan_dio_write8(dev->base_addr, TLAN_NET_MASK, data);
2278 tlan_dio_write16(dev->base_addr, TLAN_MAX_RX, ((1536)+7)&~7);
2279 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &tlphy_id1);
2280 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &tlphy_id2);
2282 if ((priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) ||
2284 status = MII_GS_LINK;
2285 netdev_info(dev, "Link forced\n");
2287 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2289 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2290 if (status & MII_GS_LINK) {
2291 /* We only support link info on Nat.Sem. PHY's */
2292 if ((tlphy_id1 == NAT_SEM_ID1) &&
2293 (tlphy_id2 == NAT_SEM_ID2)) {
2294 tlan_mii_read_reg(dev, phy, MII_AN_LPA,
2296 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_PAR,
2300 "Link active, %s %uMbps %s-Duplex\n",
2301 !(tlphy_par & TLAN_PHY_AN_EN_STAT)
2302 ? "forced" : "Autonegotiation enabled,",
2303 tlphy_par & TLAN_PHY_SPEED_100
2305 tlphy_par & TLAN_PHY_DUPLEX_FULL
2308 if (tlphy_par & TLAN_PHY_AN_EN_STAT) {
2309 netdev_info(dev, "Partner capability:");
2310 for (i = 5; i < 10; i++)
2311 if (partner & (1 << i))
2317 netdev_info(dev, "Link active\n");
2318 /* Enabling link beat monitoring */
2319 priv->media_timer.function = tlan_phy_monitor;
2320 priv->media_timer.data = (unsigned long) dev;
2321 priv->media_timer.expires = jiffies + HZ;
2322 add_timer(&priv->media_timer);
2326 if (priv->phy_num == 0) {
2327 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
2328 tlphy_ctl |= TLAN_TC_INTEN;
2329 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tlphy_ctl);
2330 sio = tlan_dio_read8(dev->base_addr, TLAN_NET_SIO);
2331 sio |= TLAN_NET_SIO_MINTEN;
2332 tlan_dio_write8(dev->base_addr, TLAN_NET_SIO, sio);
2335 if (status & MII_GS_LINK) {
2336 tlan_set_mac(dev, 0, dev->dev_addr);
2337 priv->phy_online = 1;
2338 outb((TLAN_HC_INT_ON >> 8), dev->base_addr + TLAN_HOST_CMD + 1);
2339 if (debug >= 1 && debug != TLAN_DEBUG_PROBE)
2340 outb((TLAN_HC_REQ_INT >> 8),
2341 dev->base_addr + TLAN_HOST_CMD + 1);
2342 outl(priv->rx_list_dma, dev->base_addr + TLAN_CH_PARM);
2343 outl(TLAN_HC_GO | TLAN_HC_RT, dev->base_addr + TLAN_HOST_CMD);
2344 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK);
2345 netif_carrier_on(dev);
2347 netdev_info(dev, "Link inactive, will retry in 10 secs...\n");
2348 tlan_set_timer(dev, (10*HZ), TLAN_TIMER_FINISH_RESET);
2351 tlan_set_multicast_list(dev);
2358 /***************************************************************
2364 * dev Pointer to device structure of adapter
2365 * on which to change the AREG.
2366 * areg The AREG to set the address in (0 - 3).
2367 * mac A pointer to an array of chars. Each
2368 * element stores one byte of the address.
2369 * IE, it isn't in ascii.
2371 * This function transfers a MAC address to one of the
2372 * TLAN AREGs (address registers). The TLAN chip locks
2373 * the register on writing to offset 0 and unlocks the
2374 * register after writing to offset 5. If NULL is passed
2375 * in mac, then the AREG is filled with 0's.
2377 **************************************************************/
2379 static void tlan_set_mac(struct net_device *dev, int areg, char *mac)
2386 for (i = 0; i < 6; i++)
2387 tlan_dio_write8(dev->base_addr,
2388 TLAN_AREG_0 + areg + i, mac[i]);
2390 for (i = 0; i < 6; i++)
2391 tlan_dio_write8(dev->base_addr,
2392 TLAN_AREG_0 + areg + i, 0);
2400 /*****************************************************************************
2401 ******************************************************************************
2403 ThunderLAN driver PHY layer routines
2405 ******************************************************************************
2406 *****************************************************************************/
2410 /*********************************************************************
2416 * dev A pointer to the device structure of the
2417 * TLAN device having the PHYs to be detailed.
2419 * This function prints the registers a PHY (aka transceiver).
2421 ********************************************************************/
2423 static void tlan_phy_print(struct net_device *dev)
2425 struct tlan_priv *priv = netdev_priv(dev);
2426 u16 i, data0, data1, data2, data3, phy;
2428 phy = priv->phy[priv->phy_num];
2430 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2431 netdev_info(dev, "Unmanaged PHY\n");
2432 } else if (phy <= TLAN_PHY_MAX_ADDR) {
2433 netdev_info(dev, "PHY 0x%02x\n", phy);
2434 pr_info(" Off. +0 +1 +2 +3\n");
2435 for (i = 0; i < 0x20; i += 4) {
2436 tlan_mii_read_reg(dev, phy, i, &data0);
2437 tlan_mii_read_reg(dev, phy, i + 1, &data1);
2438 tlan_mii_read_reg(dev, phy, i + 2, &data2);
2439 tlan_mii_read_reg(dev, phy, i + 3, &data3);
2440 pr_info(" 0x%02x 0x%04hx 0x%04hx 0x%04hx 0x%04hx\n",
2441 i, data0, data1, data2, data3);
2444 netdev_info(dev, "Invalid PHY\n");
2452 /*********************************************************************
2458 * dev A pointer to the device structure of the adapter
2459 * for which the PHY needs determined.
2461 * So far I've found that adapters which have external PHYs
2462 * may also use the internal PHY for part of the functionality.
2463 * (eg, AUI/Thinnet). This function finds out if this TLAN
2464 * chip has an internal PHY, and then finds the first external
2465 * PHY (starting from address 0) if it exists).
2467 ********************************************************************/
2469 static void tlan_phy_detect(struct net_device *dev)
2471 struct tlan_priv *priv = netdev_priv(dev);
2477 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2478 priv->phy_num = 0xffff;
2482 tlan_mii_read_reg(dev, TLAN_PHY_MAX_ADDR, MII_GEN_ID_HI, &hi);
2485 priv->phy[0] = TLAN_PHY_MAX_ADDR;
2487 priv->phy[0] = TLAN_PHY_NONE;
2489 priv->phy[1] = TLAN_PHY_NONE;
2490 for (phy = 0; phy <= TLAN_PHY_MAX_ADDR; phy++) {
2491 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &control);
2492 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &hi);
2493 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &lo);
2494 if ((control != 0xffff) ||
2495 (hi != 0xffff) || (lo != 0xffff)) {
2496 TLAN_DBG(TLAN_DEBUG_GNRL,
2497 "PHY found at %02x %04x %04x %04x\n",
2498 phy, control, hi, lo);
2499 if ((priv->phy[1] == TLAN_PHY_NONE) &&
2500 (phy != TLAN_PHY_MAX_ADDR)) {
2506 if (priv->phy[1] != TLAN_PHY_NONE)
2508 else if (priv->phy[0] != TLAN_PHY_NONE)
2511 netdev_info(dev, "Cannot initialize device, no PHY was found!\n");
2518 static void tlan_phy_power_down(struct net_device *dev)
2520 struct tlan_priv *priv = netdev_priv(dev);
2523 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering down PHY(s).\n", dev->name);
2524 value = MII_GC_PDOWN | MII_GC_LOOPBK | MII_GC_ISOLATE;
2525 tlan_mii_sync(dev->base_addr);
2526 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2527 if ((priv->phy_num == 0) &&
2528 (priv->phy[1] != TLAN_PHY_NONE) &&
2529 (!(priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10))) {
2530 tlan_mii_sync(dev->base_addr);
2531 tlan_mii_write_reg(dev, priv->phy[1], MII_GEN_CTL, value);
2534 /* Wait for 50 ms and powerup
2535 * This is abitrary. It is intended to make sure the
2536 * transceiver settles.
2538 tlan_set_timer(dev, (HZ/20), TLAN_TIMER_PHY_PUP);
2545 static void tlan_phy_power_up(struct net_device *dev)
2547 struct tlan_priv *priv = netdev_priv(dev);
2550 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering up PHY.\n", dev->name);
2551 tlan_mii_sync(dev->base_addr);
2552 value = MII_GC_LOOPBK;
2553 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2554 tlan_mii_sync(dev->base_addr);
2555 /* Wait for 500 ms and reset the
2556 * transceiver. The TLAN docs say both 50 ms and
2557 * 500 ms, so do the longer, just in case.
2559 tlan_set_timer(dev, (HZ/20), TLAN_TIMER_PHY_RESET);
2566 static void tlan_phy_reset(struct net_device *dev)
2568 struct tlan_priv *priv = netdev_priv(dev);
2571 unsigned long timeout = jiffies + HZ;
2573 phy = priv->phy[priv->phy_num];
2575 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Resetting PHY.\n", dev->name);
2576 tlan_mii_sync(dev->base_addr);
2577 value = MII_GC_LOOPBK | MII_GC_RESET;
2578 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, value);
2580 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value);
2581 if (time_after(jiffies, timeout)) {
2582 netdev_err(dev, "PHY reset timeout\n");
2585 } while (value & MII_GC_RESET);
2587 /* Wait for 500 ms and initialize.
2588 * I don't remember why I wait this long.
2589 * I've changed this to 50ms, as it seems long enough.
2591 tlan_set_timer(dev, (HZ/20), TLAN_TIMER_PHY_START_LINK);
2598 static void tlan_phy_start_link(struct net_device *dev)
2600 struct tlan_priv *priv = netdev_priv(dev);
2608 phy = priv->phy[priv->phy_num];
2609 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Trying to activate link.\n", dev->name);
2610 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2611 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &ability);
2613 if ((status & MII_GS_AUTONEG) &&
2615 ability = status >> 11;
2616 if (priv->speed == TLAN_SPEED_10 &&
2617 priv->duplex == TLAN_DUPLEX_HALF) {
2618 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0000);
2619 } else if (priv->speed == TLAN_SPEED_10 &&
2620 priv->duplex == TLAN_DUPLEX_FULL) {
2621 priv->tlan_full_duplex = true;
2622 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0100);
2623 } else if (priv->speed == TLAN_SPEED_100 &&
2624 priv->duplex == TLAN_DUPLEX_HALF) {
2625 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2000);
2626 } else if (priv->speed == TLAN_SPEED_100 &&
2627 priv->duplex == TLAN_DUPLEX_FULL) {
2628 priv->tlan_full_duplex = true;
2629 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2100);
2632 /* Set Auto-Neg advertisement */
2633 tlan_mii_write_reg(dev, phy, MII_AN_ADV,
2634 (ability << 5) | 1);
2635 /* Enablee Auto-Neg */
2636 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1000);
2637 /* Restart Auto-Neg */
2638 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1200);
2639 /* Wait for 4 sec for autonegotiation
2640 * to complete. The max spec time is less than this
2641 * but the card need additional time to start AN.
2642 * .5 sec should be plenty extra.
2644 netdev_info(dev, "Starting autonegotiation\n");
2645 tlan_set_timer(dev, (2*HZ), TLAN_TIMER_PHY_FINISH_AN);
2651 if ((priv->aui) && (priv->phy_num != 0)) {
2653 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN
2654 | TLAN_NET_CFG_PHY_EN;
2655 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data);
2656 tlan_set_timer(dev, (40*HZ/1000), TLAN_TIMER_PHY_PDOWN);
2658 } else if (priv->phy_num == 0) {
2660 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tctl);
2662 tctl |= TLAN_TC_AUISEL;
2664 tctl &= ~TLAN_TC_AUISEL;
2665 if (priv->duplex == TLAN_DUPLEX_FULL) {
2666 control |= MII_GC_DUPLEX;
2667 priv->tlan_full_duplex = true;
2669 if (priv->speed == TLAN_SPEED_100)
2670 control |= MII_GC_SPEEDSEL;
2672 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, control);
2673 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tctl);
2676 /* Wait for 2 sec to give the transceiver time
2677 * to establish link.
2679 tlan_set_timer(dev, (4*HZ), TLAN_TIMER_FINISH_RESET);
2686 static void tlan_phy_finish_auto_neg(struct net_device *dev)
2688 struct tlan_priv *priv = netdev_priv(dev);
2696 phy = priv->phy[priv->phy_num];
2698 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2700 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2702 if (!(status & MII_GS_AUTOCMPLT)) {
2703 /* Wait for 8 sec to give the process
2704 * more time. Perhaps we should fail after a while.
2706 tlan_set_timer(dev, 2 * HZ, TLAN_TIMER_PHY_FINISH_AN);
2710 netdev_info(dev, "Autonegotiation complete\n");
2711 tlan_mii_read_reg(dev, phy, MII_AN_ADV, &an_adv);
2712 tlan_mii_read_reg(dev, phy, MII_AN_LPA, &an_lpa);
2713 mode = an_adv & an_lpa & 0x03E0;
2715 priv->tlan_full_duplex = true;
2716 else if (!(mode & 0x0080) && (mode & 0x0040))
2717 priv->tlan_full_duplex = true;
2719 /* switch to internal PHY for 10 Mbps */
2720 if ((!(mode & 0x0180)) &&
2721 (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) &&
2722 (priv->phy_num != 0)) {
2724 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN
2725 | TLAN_NET_CFG_PHY_EN;
2726 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data);
2727 tlan_set_timer(dev, (400*HZ/1000), TLAN_TIMER_PHY_PDOWN);
2731 if (priv->phy_num == 0) {
2732 if ((priv->duplex == TLAN_DUPLEX_FULL) ||
2733 (an_adv & an_lpa & 0x0040)) {
2734 tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2735 MII_GC_AUTOENB | MII_GC_DUPLEX);
2736 netdev_info(dev, "Starting internal PHY with FULL-DUPLEX\n");
2738 tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2740 netdev_info(dev, "Starting internal PHY with HALF-DUPLEX\n");
2744 /* Wait for 100 ms. No reason in partiticular.
2746 tlan_set_timer(dev, (HZ/10), TLAN_TIMER_FINISH_RESET);
2751 /*********************************************************************
2759 * data The device structure of this device.
2762 * This function monitors PHY condition by reading the status
2763 * register via the MII bus, controls LINK LED and notifies the
2764 * kernel about link state.
2766 *******************************************************************/
2768 static void tlan_phy_monitor(unsigned long data)
2770 struct net_device *dev = (struct net_device *) data;
2771 struct tlan_priv *priv = netdev_priv(dev);
2775 phy = priv->phy[priv->phy_num];
2777 /* Get PHY status register */
2778 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &phy_status);
2780 /* Check if link has been lost */
2781 if (!(phy_status & MII_GS_LINK)) {
2782 if (netif_carrier_ok(dev)) {
2783 printk(KERN_DEBUG "TLAN: %s has lost link\n",
2785 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, 0);
2786 netif_carrier_off(dev);
2787 if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) {
2788 /* power down internal PHY */
2789 u16 data = MII_GC_PDOWN | MII_GC_LOOPBK |
2792 tlan_mii_sync(dev->base_addr);
2793 tlan_mii_write_reg(dev, priv->phy[0],
2795 /* set to external PHY */
2797 /* restart autonegotiation */
2798 tlan_set_timer(dev, 4 * HZ / 10,
2799 TLAN_TIMER_PHY_PDOWN);
2805 /* Link restablished? */
2806 if ((phy_status & MII_GS_LINK) && !netif_carrier_ok(dev)) {
2807 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK);
2808 printk(KERN_DEBUG "TLAN: %s has reestablished link\n",
2810 netif_carrier_on(dev);
2812 priv->media_timer.expires = jiffies + HZ;
2813 add_timer(&priv->media_timer);
2817 /*****************************************************************************
2818 ******************************************************************************
2820 ThunderLAN driver MII routines
2822 these routines are based on the information in chap. 2 of the
2823 "ThunderLAN Programmer's Guide", pp. 15-24.
2825 ******************************************************************************
2826 *****************************************************************************/
2829 /***************************************************************
2833 * false if ack received ok
2834 * true if no ack received or other error
2837 * dev The device structure containing
2838 * The io address and interrupt count
2840 * phy The address of the PHY to be queried.
2841 * reg The register whose contents are to be
2843 * val A pointer to a variable to store the
2846 * This function uses the TLAN's MII bus to retrieve the contents
2847 * of a given register on a PHY. It sends the appropriate info
2848 * and then reads the 16-bit register value from the MII bus via
2849 * the TLAN SIO register.
2851 **************************************************************/
2854 tlan_mii_read_reg(struct net_device *dev, u16 phy, u16 reg, u16 *val)
2861 struct tlan_priv *priv = netdev_priv(dev);
2862 unsigned long flags = 0;
2865 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2866 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2869 spin_lock_irqsave(&priv->lock, flags);
2871 tlan_mii_sync(dev->base_addr);
2873 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
2875 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
2877 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */
2878 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* read (10b) */
2879 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */
2880 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */
2883 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio); /* change direction */
2885 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* clock idle bit */
2886 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2887 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* wait 300ns */
2889 nack = tlan_get_bit(TLAN_NET_SIO_MDATA, sio); /* check for ACK */
2890 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); /* finish ACK */
2891 if (nack) { /* no ACK, so fake it */
2892 for (i = 0; i < 16; i++) {
2893 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2894 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2898 } else { /* ACK, so read data */
2899 for (tmp = 0, i = 0x8000; i; i >>= 1) {
2900 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2901 if (tlan_get_bit(TLAN_NET_SIO_MDATA, sio))
2903 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2908 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
2909 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2912 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
2917 spin_unlock_irqrestore(&priv->lock, flags);
2926 /***************************************************************
2927 * tlan_mii_send_data
2932 * base_port The base IO port of the adapter in
2934 * dev The address of the PHY to be queried.
2935 * data The value to be placed on the MII bus.
2936 * num_bits The number of bits in data that are to
2937 * be placed on the MII bus.
2939 * This function sends on sequence of bits on the MII
2940 * configuration bus.
2942 **************************************************************/
2944 static void tlan_mii_send_data(u16 base_port, u32 data, unsigned num_bits)
2952 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2953 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2954 tlan_set_bit(TLAN_NET_SIO_MTXEN, sio);
2956 for (i = (0x1 << (num_bits - 1)); i; i >>= 1) {
2957 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2958 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2960 tlan_set_bit(TLAN_NET_SIO_MDATA, sio);
2962 tlan_clear_bit(TLAN_NET_SIO_MDATA, sio);
2963 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2964 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2972 /***************************************************************
2978 * base_port The base IO port of the adapter in
2981 * This functions syncs all PHYs in terms of the MII configuration
2984 **************************************************************/
2986 static void tlan_mii_sync(u16 base_port)
2991 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2992 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2994 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio);
2995 for (i = 0; i < 32; i++) {
2996 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2997 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
3005 /***************************************************************
3006 * tlan_mii_write_reg
3011 * dev The device structure for the device
3013 * phy The address of the PHY to be written to.
3014 * reg The register whose contents are to be
3016 * val The value to be written to the register.
3018 * This function uses the TLAN's MII bus to write the contents of a
3019 * given register on a PHY. It sends the appropriate info and then
3020 * writes the 16-bit register value from the MII configuration bus
3021 * via the TLAN SIO register.
3023 **************************************************************/
3026 tlan_mii_write_reg(struct net_device *dev, u16 phy, u16 reg, u16 val)
3030 unsigned long flags = 0;
3031 struct tlan_priv *priv = netdev_priv(dev);
3033 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
3034 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
3037 spin_lock_irqsave(&priv->lock, flags);
3039 tlan_mii_sync(dev->base_addr);
3041 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
3043 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
3045 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */
3046 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* write (01b) */
3047 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */
3048 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */
3050 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* send ACK */
3051 tlan_mii_send_data(dev->base_addr, val, 16); /* send data */
3053 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
3054 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
3057 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
3060 spin_unlock_irqrestore(&priv->lock, flags);
3067 /*****************************************************************************
3068 ******************************************************************************
3070 ThunderLAN driver eeprom routines
3072 the Compaq netelligent 10 and 10/100 cards use a microchip 24C02A
3073 EEPROM. these functions are based on information in microchip's
3074 data sheet. I don't know how well this functions will work with
3077 ******************************************************************************
3078 *****************************************************************************/
3081 /***************************************************************
3082 * tlan_ee_send_start
3087 * io_base The IO port base address for the
3088 * TLAN device with the EEPROM to
3091 * This function sends a start cycle to an EEPROM attached
3094 **************************************************************/
3096 static void tlan_ee_send_start(u16 io_base)
3100 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3101 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3103 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3104 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3105 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3106 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3107 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3114 /***************************************************************
3118 * If the correct ack was received, 0, otherwise 1
3119 * Parms: io_base The IO port base address for the
3120 * TLAN device with the EEPROM to
3122 * data The 8 bits of information to
3123 * send to the EEPROM.
3124 * stop If TLAN_EEPROM_STOP is passed, a
3125 * stop cycle is sent after the
3126 * byte is sent after the ack is
3129 * This function sends a byte on the serial EEPROM line,
3130 * driving the clock to send each bit. The function then
3131 * reverses transmission direction and reads an acknowledge
3134 **************************************************************/
3136 static int tlan_ee_send_byte(u16 io_base, u8 data, int stop)
3142 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3143 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3145 /* Assume clock is low, tx is enabled; */
3146 for (place = 0x80; place != 0; place >>= 1) {
3148 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3150 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3151 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3152 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3154 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3155 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3156 err = tlan_get_bit(TLAN_NET_SIO_EDATA, sio);
3157 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3158 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3160 if ((!err) && stop) {
3161 /* STOP, raise data while clock is high */
3162 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3163 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3164 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3174 /***************************************************************
3175 * tlan_ee_receive_byte
3180 * io_base The IO port base address for the
3181 * TLAN device with the EEPROM to
3183 * data An address to a char to hold the
3184 * data sent from the EEPROM.
3185 * stop If TLAN_EEPROM_STOP is passed, a
3186 * stop cycle is sent after the
3187 * byte is received, and no ack is
3190 * This function receives 8 bits of data from the EEPROM
3191 * over the serial link. It then sends and ack bit, or no
3192 * ack and a stop bit. This function is used to retrieve
3193 * data after the address of a byte in the EEPROM has been
3196 **************************************************************/
3198 static void tlan_ee_receive_byte(u16 io_base, u8 *data, int stop)
3203 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3204 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3207 /* Assume clock is low, tx is enabled; */
3208 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3209 for (place = 0x80; place; place >>= 1) {
3210 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3211 if (tlan_get_bit(TLAN_NET_SIO_EDATA, sio))
3213 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3216 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3218 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); /* ack = 0 */
3219 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3220 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3222 tlan_set_bit(TLAN_NET_SIO_EDATA, sio); /* no ack = 1 (?) */
3223 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3224 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3225 /* STOP, raise data while clock is high */
3226 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3227 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3228 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3236 /***************************************************************
3240 * No error = 0, else, the stage at which the error
3243 * io_base The IO port base address for the
3244 * TLAN device with the EEPROM to
3246 * ee_addr The address of the byte in the
3247 * EEPROM whose contents are to be
3249 * data An address to a char to hold the
3250 * data obtained from the EEPROM.
3252 * This function reads a byte of information from an byte
3253 * cell in the EEPROM.
3255 **************************************************************/
3257 static int tlan_ee_read_byte(struct net_device *dev, u8 ee_addr, u8 *data)
3260 struct tlan_priv *priv = netdev_priv(dev);
3261 unsigned long flags = 0;
3264 spin_lock_irqsave(&priv->lock, flags);
3266 tlan_ee_send_start(dev->base_addr);
3267 err = tlan_ee_send_byte(dev->base_addr, 0xa0, TLAN_EEPROM_ACK);
3272 err = tlan_ee_send_byte(dev->base_addr, ee_addr, TLAN_EEPROM_ACK);
3277 tlan_ee_send_start(dev->base_addr);
3278 err = tlan_ee_send_byte(dev->base_addr, 0xa1, TLAN_EEPROM_ACK);
3283 tlan_ee_receive_byte(dev->base_addr, data, TLAN_EEPROM_STOP);
3285 spin_unlock_irqrestore(&priv->lock, flags);