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 const struct pci_device_id 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);
316 cancel_work_sync(&priv->tlan_tqueue);
320 static void tlan_start(struct net_device *dev)
322 tlan_reset_lists(dev);
323 /* NOTE: It might not be necessary to read the stats before a
324 reset if you don't care what the values are.
326 tlan_read_and_clear_stats(dev, TLAN_IGNORE);
327 tlan_reset_adapter(dev);
328 netif_wake_queue(dev);
331 static void tlan_stop(struct net_device *dev)
333 struct tlan_priv *priv = netdev_priv(dev);
335 del_timer_sync(&priv->media_timer);
336 tlan_read_and_clear_stats(dev, TLAN_RECORD);
337 outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
338 /* Reset and power down phy */
339 tlan_reset_adapter(dev);
340 if (priv->timer.function != NULL) {
341 del_timer_sync(&priv->timer);
342 priv->timer.function = NULL;
348 static int tlan_suspend(struct pci_dev *pdev, pm_message_t state)
350 struct net_device *dev = pci_get_drvdata(pdev);
352 if (netif_running(dev))
355 netif_device_detach(dev);
356 pci_save_state(pdev);
357 pci_disable_device(pdev);
358 pci_wake_from_d3(pdev, false);
359 pci_set_power_state(pdev, PCI_D3hot);
364 static int tlan_resume(struct pci_dev *pdev)
366 struct net_device *dev = pci_get_drvdata(pdev);
367 int rc = pci_enable_device(pdev);
371 pci_restore_state(pdev);
372 pci_enable_wake(pdev, PCI_D0, 0);
373 netif_device_attach(dev);
375 if (netif_running(dev))
381 #else /* CONFIG_PM */
383 #define tlan_suspend NULL
384 #define tlan_resume NULL
386 #endif /* CONFIG_PM */
389 static struct pci_driver tlan_driver = {
391 .id_table = tlan_pci_tbl,
392 .probe = tlan_init_one,
393 .remove = tlan_remove_one,
394 .suspend = tlan_suspend,
395 .resume = tlan_resume,
398 static int __init tlan_probe(void)
402 pr_info("%s", tlan_banner);
404 TLAN_DBG(TLAN_DEBUG_PROBE, "Starting PCI Probe....\n");
406 /* Use new style PCI probing. Now the kernel will
407 do most of this for us */
408 rc = pci_register_driver(&tlan_driver);
411 pr_err("Could not register pci driver\n");
412 goto err_out_pci_free;
415 TLAN_DBG(TLAN_DEBUG_PROBE, "Starting EISA Probe....\n");
418 pr_info("%d device%s installed, PCI: %d EISA: %d\n",
419 tlan_devices_installed, tlan_devices_installed == 1 ? "" : "s",
420 tlan_have_pci, tlan_have_eisa);
422 if (tlan_devices_installed == 0) {
424 goto err_out_pci_unreg;
429 pci_unregister_driver(&tlan_driver);
435 static int tlan_init_one(struct pci_dev *pdev,
436 const struct pci_device_id *ent)
438 return tlan_probe1(pdev, -1, -1, 0, ent);
443 ***************************************************************
447 * 0 on success, error code on error
451 * The name is lower case to fit in with all the rest of
452 * the netcard_probe names. This function looks for
453 * another TLan based adapter, setting it up with the
454 * allocated device struct if one is found.
455 * tlan_probe has been ported to the new net API and
456 * now allocates its own device structure. This function
457 * is also used by modules.
459 **************************************************************/
461 static int tlan_probe1(struct pci_dev *pdev, long ioaddr, int irq, int rev,
462 const struct pci_device_id *ent)
465 struct net_device *dev;
466 struct tlan_priv *priv;
468 int reg, rc = -ENODEV;
472 rc = pci_enable_device(pdev);
476 rc = pci_request_regions(pdev, tlan_signature);
478 pr_err("Could not reserve IO regions\n");
482 #endif /* CONFIG_PCI */
484 dev = alloc_etherdev(sizeof(struct tlan_priv));
487 goto err_out_regions;
489 SET_NETDEV_DEV(dev, &pdev->dev);
491 priv = netdev_priv(dev);
493 priv->pci_dev = pdev;
496 /* Is this a PCI device? */
500 priv->adapter = &board_info[ent->driver_data];
502 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
504 pr_err("No suitable PCI mapping available\n");
505 goto err_out_free_dev;
508 for (reg = 0; reg <= 5; reg++) {
509 if (pci_resource_flags(pdev, reg) & IORESOURCE_IO) {
510 pci_io_base = pci_resource_start(pdev, reg);
511 TLAN_DBG(TLAN_DEBUG_GNRL,
512 "IO mapping is available at %x.\n",
518 pr_err("No IO mappings available\n");
520 goto err_out_free_dev;
523 dev->base_addr = pci_io_base;
524 dev->irq = pdev->irq;
525 priv->adapter_rev = pdev->revision;
526 pci_set_master(pdev);
527 pci_set_drvdata(pdev, dev);
529 } else { /* EISA card */
530 /* This is a hack. We need to know which board structure
531 * is suited for this adapter */
532 device_id = inw(ioaddr + EISA_ID2);
533 if (device_id == 0x20F1) {
534 priv->adapter = &board_info[13]; /* NetFlex-3/E */
535 priv->adapter_rev = 23; /* TLAN 2.3 */
537 priv->adapter = &board_info[14];
538 priv->adapter_rev = 10; /* TLAN 1.0 */
540 dev->base_addr = ioaddr;
544 /* Kernel parameters */
545 if (dev->mem_start) {
546 priv->aui = dev->mem_start & 0x01;
547 priv->duplex = ((dev->mem_start & 0x06) == 0x06) ? 0
548 : (dev->mem_start & 0x06) >> 1;
549 priv->speed = ((dev->mem_start & 0x18) == 0x18) ? 0
550 : (dev->mem_start & 0x18) >> 3;
552 if (priv->speed == 0x1)
553 priv->speed = TLAN_SPEED_10;
554 else if (priv->speed == 0x2)
555 priv->speed = TLAN_SPEED_100;
557 debug = priv->debug = dev->mem_end;
559 priv->aui = aui[boards_found];
560 priv->speed = speed[boards_found];
561 priv->duplex = duplex[boards_found];
565 /* This will be used when we get an adapter error from
566 * within our irq handler */
567 INIT_WORK(&priv->tlan_tqueue, tlan_tx_timeout_work);
569 spin_lock_init(&priv->lock);
573 pr_err("Could not set up device\n");
574 goto err_out_free_dev;
577 rc = register_netdev(dev);
579 pr_err("Could not register device\n");
584 tlan_devices_installed++;
587 /* pdev is NULL if this is an EISA device */
591 priv->next_device = tlan_eisa_devices;
592 tlan_eisa_devices = dev;
596 netdev_info(dev, "irq=%2d, io=%04x, %s, Rev. %d\n",
599 priv->adapter->device_label,
604 pci_free_consistent(priv->pci_dev, priv->dma_size, priv->dma_storage,
605 priv->dma_storage_dma);
611 pci_release_regions(pdev);
615 pci_disable_device(pdev);
620 static void tlan_eisa_cleanup(void)
622 struct net_device *dev;
623 struct tlan_priv *priv;
625 while (tlan_have_eisa) {
626 dev = tlan_eisa_devices;
627 priv = netdev_priv(dev);
628 if (priv->dma_storage) {
629 pci_free_consistent(priv->pci_dev, priv->dma_size,
631 priv->dma_storage_dma);
633 release_region(dev->base_addr, 0x10);
634 unregister_netdev(dev);
635 tlan_eisa_devices = priv->next_device;
642 static void __exit tlan_exit(void)
644 pci_unregister_driver(&tlan_driver);
652 /* Module loading/unloading */
653 module_init(tlan_probe);
654 module_exit(tlan_exit);
658 /**************************************************************
661 * Returns: 0 on success, 1 otherwise
666 * This functions probes for EISA devices and calls
667 * TLan_probe1 when one is found.
669 *************************************************************/
671 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 tlan_probe1(NULL, ioaddr, irq, 12, NULL);
743 pr_info("None found\n");
748 pr_info("Card found but it is not enabled, skipping\n");
755 #ifdef CONFIG_NET_POLL_CONTROLLER
756 static void tlan_poll(struct net_device *dev)
758 disable_irq(dev->irq);
759 tlan_handle_interrupt(dev->irq, dev);
760 enable_irq(dev->irq);
764 static const struct net_device_ops tlan_netdev_ops = {
765 .ndo_open = tlan_open,
766 .ndo_stop = tlan_close,
767 .ndo_start_xmit = tlan_start_tx,
768 .ndo_tx_timeout = tlan_tx_timeout,
769 .ndo_get_stats = tlan_get_stats,
770 .ndo_set_rx_mode = tlan_set_multicast_list,
771 .ndo_do_ioctl = tlan_ioctl,
772 .ndo_set_mac_address = eth_mac_addr,
773 .ndo_validate_addr = eth_validate_addr,
774 #ifdef CONFIG_NET_POLL_CONTROLLER
775 .ndo_poll_controller = tlan_poll,
779 static void tlan_get_drvinfo(struct net_device *dev,
780 struct ethtool_drvinfo *info)
782 struct tlan_priv *priv = netdev_priv(dev);
784 strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
786 strlcpy(info->bus_info, pci_name(priv->pci_dev),
787 sizeof(info->bus_info));
789 strlcpy(info->bus_info, "EISA", sizeof(info->bus_info));
792 static int tlan_get_eeprom_len(struct net_device *dev)
794 return TLAN_EEPROM_SIZE;
797 static int tlan_get_eeprom(struct net_device *dev,
798 struct ethtool_eeprom *eeprom, u8 *data)
802 for (i = 0; i < TLAN_EEPROM_SIZE; i++)
803 if (tlan_ee_read_byte(dev, i, &data[i]))
809 static const struct ethtool_ops tlan_ethtool_ops = {
810 .get_drvinfo = tlan_get_drvinfo,
811 .get_link = ethtool_op_get_link,
812 .get_eeprom_len = tlan_get_eeprom_len,
813 .get_eeprom = tlan_get_eeprom,
816 /***************************************************************
820 * 0 on success, error code otherwise.
822 * dev The structure of the device to be
825 * This function completes the initialization of the
826 * device structure and driver. It reserves the IO
827 * addresses, allocates memory for the lists and bounce
828 * buffers, retrieves the MAC address from the eeprom
829 * and assignes the device's methods.
831 **************************************************************/
833 static int tlan_init(struct net_device *dev)
838 struct tlan_priv *priv;
840 priv = netdev_priv(dev);
842 dma_size = (TLAN_NUM_RX_LISTS + TLAN_NUM_TX_LISTS)
843 * (sizeof(struct tlan_list));
844 priv->dma_storage = pci_alloc_consistent(priv->pci_dev,
846 &priv->dma_storage_dma);
847 priv->dma_size = dma_size;
849 if (priv->dma_storage == NULL) {
850 pr_err("Could not allocate lists and buffers for %s\n",
854 memset(priv->dma_storage, 0, dma_size);
855 priv->rx_list = (struct tlan_list *)
856 ALIGN((unsigned long)priv->dma_storage, 8);
857 priv->rx_list_dma = ALIGN(priv->dma_storage_dma, 8);
858 priv->tx_list = priv->rx_list + TLAN_NUM_RX_LISTS;
860 priv->rx_list_dma + sizeof(struct tlan_list)*TLAN_NUM_RX_LISTS;
863 for (i = 0; i < ETH_ALEN; i++)
864 err |= tlan_ee_read_byte(dev,
865 (u8) priv->adapter->addr_ofs + i,
866 (u8 *) &dev->dev_addr[i]);
868 pr_err("%s: Error reading MAC from eeprom: %d\n",
871 /* Olicom OC-2325/OC-2326 have the address byte-swapped */
872 if (priv->adapter->addr_ofs == 0xf8) {
873 for (i = 0; i < ETH_ALEN; i += 2) {
874 char tmp = dev->dev_addr[i];
875 dev->dev_addr[i] = dev->dev_addr[i + 1];
876 dev->dev_addr[i + 1] = tmp;
880 netif_carrier_off(dev);
883 dev->netdev_ops = &tlan_netdev_ops;
884 dev->ethtool_ops = &tlan_ethtool_ops;
885 dev->watchdog_timeo = TX_TIMEOUT;
894 /***************************************************************
898 * 0 on success, error code otherwise.
900 * dev Structure of device to be opened.
902 * This routine puts the driver and TLAN adapter in a
903 * state where it is ready to send and receive packets.
904 * It allocates the IRQ, resets and brings the adapter
905 * out of reset, and allows interrupts. It also delays
906 * the startup for autonegotiation or sends a Rx GO
907 * command to the adapter, as appropriate.
909 **************************************************************/
911 static int tlan_open(struct net_device *dev)
913 struct tlan_priv *priv = netdev_priv(dev);
916 priv->tlan_rev = tlan_dio_read8(dev->base_addr, TLAN_DEF_REVISION);
917 err = request_irq(dev->irq, tlan_handle_interrupt, IRQF_SHARED,
921 netdev_err(dev, "Cannot open because IRQ %d is already in use\n",
926 init_timer(&priv->timer);
927 init_timer(&priv->media_timer);
931 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Opened. TLAN Chip Rev: %x\n",
932 dev->name, priv->tlan_rev);
940 /**************************************************************
944 * 0 on success, error code otherwise
946 * dev structure of device to receive ioctl.
948 * rq ifreq structure to hold userspace data.
953 *************************************************************/
955 static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
957 struct tlan_priv *priv = netdev_priv(dev);
958 struct mii_ioctl_data *data = if_mii(rq);
959 u32 phy = priv->phy[priv->phy_num];
961 if (!priv->phy_online)
965 case SIOCGMIIPHY: /* get address of MII PHY in use. */
969 case SIOCGMIIREG: /* read MII PHY register. */
970 tlan_mii_read_reg(dev, data->phy_id & 0x1f,
971 data->reg_num & 0x1f, &data->val_out);
975 case SIOCSMIIREG: /* write MII PHY register. */
976 tlan_mii_write_reg(dev, data->phy_id & 0x1f,
977 data->reg_num & 0x1f, data->val_in);
985 /***************************************************************
991 * dev structure of device which timed out
994 **************************************************************/
996 static void tlan_tx_timeout(struct net_device *dev)
999 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Transmit timed out.\n", dev->name);
1001 /* Ok so we timed out, lets see what we can do about it...*/
1002 tlan_free_lists(dev);
1003 tlan_reset_lists(dev);
1004 tlan_read_and_clear_stats(dev, TLAN_IGNORE);
1005 tlan_reset_adapter(dev);
1006 netif_trans_update(dev); /* prevent tx timeout */
1007 netif_wake_queue(dev);
1012 /***************************************************************
1013 * tlan_tx_timeout_work
1018 * work work item of device which timed out
1020 **************************************************************/
1022 static void tlan_tx_timeout_work(struct work_struct *work)
1024 struct tlan_priv *priv =
1025 container_of(work, struct tlan_priv, tlan_tqueue);
1027 tlan_tx_timeout(priv->dev);
1032 /***************************************************************
1036 * 0 on success, non-zero on failure.
1038 * skb A pointer to the sk_buff containing the
1040 * dev The device to send the data on.
1042 * This function adds a frame to the Tx list to be sent
1043 * ASAP. First it verifies that the adapter is ready and
1044 * there is room in the queue. Then it sets up the next
1045 * available list, copies the frame to the corresponding
1046 * buffer. If the adapter Tx channel is idle, it gives
1047 * the adapter a Tx Go command on the list, otherwise it
1048 * sets the forward address of the previous list to point
1049 * to this one. Then it frees the sk_buff.
1051 **************************************************************/
1053 static netdev_tx_t tlan_start_tx(struct sk_buff *skb, struct net_device *dev)
1055 struct tlan_priv *priv = netdev_priv(dev);
1056 dma_addr_t tail_list_phys;
1057 struct tlan_list *tail_list;
1058 unsigned long flags;
1061 if (!priv->phy_online) {
1062 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s PHY is not ready\n",
1064 dev_kfree_skb_any(skb);
1065 return NETDEV_TX_OK;
1068 if (skb_padto(skb, TLAN_MIN_FRAME_SIZE))
1069 return NETDEV_TX_OK;
1070 txlen = max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE);
1072 tail_list = priv->tx_list + priv->tx_tail;
1074 priv->tx_list_dma + sizeof(struct tlan_list)*priv->tx_tail;
1076 if (tail_list->c_stat != TLAN_CSTAT_UNUSED) {
1077 TLAN_DBG(TLAN_DEBUG_TX,
1078 "TRANSMIT: %s is busy (Head=%d Tail=%d)\n",
1079 dev->name, priv->tx_head, priv->tx_tail);
1080 netif_stop_queue(dev);
1081 priv->tx_busy_count++;
1082 return NETDEV_TX_BUSY;
1085 tail_list->forward = 0;
1087 tail_list->buffer[0].address = pci_map_single(priv->pci_dev,
1090 tlan_store_skb(tail_list, skb);
1092 tail_list->frame_size = (u16) txlen;
1093 tail_list->buffer[0].count = TLAN_LAST_BUFFER | (u32) txlen;
1094 tail_list->buffer[1].count = 0;
1095 tail_list->buffer[1].address = 0;
1097 spin_lock_irqsave(&priv->lock, flags);
1098 tail_list->c_stat = TLAN_CSTAT_READY;
1099 if (!priv->tx_in_progress) {
1100 priv->tx_in_progress = 1;
1101 TLAN_DBG(TLAN_DEBUG_TX,
1102 "TRANSMIT: Starting TX on buffer %d\n",
1104 outl(tail_list_phys, dev->base_addr + TLAN_CH_PARM);
1105 outl(TLAN_HC_GO, dev->base_addr + TLAN_HOST_CMD);
1107 TLAN_DBG(TLAN_DEBUG_TX,
1108 "TRANSMIT: Adding buffer %d to TX channel\n",
1110 if (priv->tx_tail == 0) {
1111 (priv->tx_list + (TLAN_NUM_TX_LISTS - 1))->forward
1114 (priv->tx_list + (priv->tx_tail - 1))->forward
1118 spin_unlock_irqrestore(&priv->lock, flags);
1120 CIRC_INC(priv->tx_tail, TLAN_NUM_TX_LISTS);
1122 return NETDEV_TX_OK;
1129 /***************************************************************
1130 * tlan_handle_interrupt
1135 * irq The line on which the interrupt
1137 * dev_id A pointer to the device assigned to
1140 * This function handles an interrupt generated by its
1141 * assigned TLAN adapter. The function deactivates
1142 * interrupts on its adapter, records the type of
1143 * interrupt, executes the appropriate subhandler, and
1144 * acknowdges the interrupt to the adapter (thus
1145 * re-enabling adapter interrupts.
1147 **************************************************************/
1149 static irqreturn_t tlan_handle_interrupt(int irq, void *dev_id)
1151 struct net_device *dev = dev_id;
1152 struct tlan_priv *priv = netdev_priv(dev);
1156 spin_lock(&priv->lock);
1158 host_int = inw(dev->base_addr + TLAN_HOST_INT);
1159 type = (host_int & TLAN_HI_IT_MASK) >> 2;
1164 outw(host_int, dev->base_addr + TLAN_HOST_INT);
1165 ack = tlan_int_vector[type](dev, host_int);
1168 host_cmd = TLAN_HC_ACK | ack | (type << 18);
1169 outl(host_cmd, dev->base_addr + TLAN_HOST_CMD);
1173 spin_unlock(&priv->lock);
1175 return IRQ_RETVAL(type);
1181 /***************************************************************
1187 * dev The device structure of the device to
1190 * This function shuts down the adapter. It records any
1191 * stats, puts the adapter into reset state, deactivates
1192 * its time as needed, and frees the irq it is using.
1194 **************************************************************/
1196 static int tlan_close(struct net_device *dev)
1200 free_irq(dev->irq, dev);
1201 tlan_free_lists(dev);
1202 TLAN_DBG(TLAN_DEBUG_GNRL, "Device %s closed.\n", dev->name);
1211 /***************************************************************
1215 * A pointer to the device's statistics structure.
1217 * dev The device structure to return the
1220 * This function updates the devices statistics by reading
1221 * the TLAN chip's onboard registers. Then it returns the
1222 * address of the statistics structure.
1224 **************************************************************/
1226 static struct net_device_stats *tlan_get_stats(struct net_device *dev)
1228 struct tlan_priv *priv = netdev_priv(dev);
1231 /* Should only read stats if open ? */
1232 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1234 TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: %s EOC count = %d\n", dev->name,
1235 priv->rx_eoc_count);
1236 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s Busy count = %d\n", dev->name,
1237 priv->tx_busy_count);
1238 if (debug & TLAN_DEBUG_GNRL) {
1239 tlan_print_dio(dev->base_addr);
1240 tlan_phy_print(dev);
1242 if (debug & TLAN_DEBUG_LIST) {
1243 for (i = 0; i < TLAN_NUM_RX_LISTS; i++)
1244 tlan_print_list(priv->rx_list + i, "RX", i);
1245 for (i = 0; i < TLAN_NUM_TX_LISTS; i++)
1246 tlan_print_list(priv->tx_list + i, "TX", i);
1256 /***************************************************************
1257 * tlan_set_multicast_list
1262 * dev The device structure to set the
1263 * multicast list for.
1265 * This function sets the TLAN adaptor to various receive
1266 * modes. If the IFF_PROMISC flag is set, promiscuous
1267 * mode is acitviated. Otherwise, promiscuous mode is
1268 * turned off. If the IFF_ALLMULTI flag is set, then
1269 * the hash table is set to receive all group addresses.
1270 * Otherwise, the first three multicast addresses are
1271 * stored in AREG_1-3, and the rest are selected via the
1272 * hash table, as necessary.
1274 **************************************************************/
1276 static void tlan_set_multicast_list(struct net_device *dev)
1278 struct netdev_hw_addr *ha;
1285 if (dev->flags & IFF_PROMISC) {
1286 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1287 tlan_dio_write8(dev->base_addr,
1288 TLAN_NET_CMD, tmp | TLAN_NET_CMD_CAF);
1290 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1291 tlan_dio_write8(dev->base_addr,
1292 TLAN_NET_CMD, tmp & ~TLAN_NET_CMD_CAF);
1293 if (dev->flags & IFF_ALLMULTI) {
1294 for (i = 0; i < 3; i++)
1295 tlan_set_mac(dev, i + 1, NULL);
1296 tlan_dio_write32(dev->base_addr, TLAN_HASH_1,
1298 tlan_dio_write32(dev->base_addr, TLAN_HASH_2,
1302 netdev_for_each_mc_addr(ha, dev) {
1304 tlan_set_mac(dev, i + 1,
1305 (char *) &ha->addr);
1308 tlan_hash_func((u8 *)&ha->addr);
1310 hash1 |= (1 << offset);
1312 hash2 |= (1 << (offset - 32));
1317 tlan_set_mac(dev, i + 1, NULL);
1318 tlan_dio_write32(dev->base_addr, TLAN_HASH_1, hash1);
1319 tlan_dio_write32(dev->base_addr, TLAN_HASH_2, hash2);
1327 /*****************************************************************************
1328 ******************************************************************************
1330 ThunderLAN driver interrupt vectors and table
1332 please see chap. 4, "Interrupt Handling" of the "ThunderLAN
1333 Programmer's Guide" for more informations on handling interrupts
1334 generated by TLAN based adapters.
1336 ******************************************************************************
1337 *****************************************************************************/
1342 /***************************************************************
1343 * tlan_handle_tx_eof
1348 * dev Device assigned the IRQ that was
1350 * host_int The contents of the HOST_INT
1353 * This function handles Tx EOF interrupts which are raised
1354 * by the adapter when it has completed sending the
1355 * contents of a buffer. If detemines which list/buffer
1356 * was completed and resets it. If the buffer was the last
1357 * in the channel (EOC), then the function checks to see if
1358 * another buffer is ready to send, and if so, sends a Tx
1359 * Go command. Finally, the driver activates/continues the
1362 **************************************************************/
1364 static u32 tlan_handle_tx_eof(struct net_device *dev, u16 host_int)
1366 struct tlan_priv *priv = netdev_priv(dev);
1368 struct tlan_list *head_list;
1369 dma_addr_t head_list_phys;
1373 TLAN_DBG(TLAN_DEBUG_TX,
1374 "TRANSMIT: Handling TX EOF (Head=%d Tail=%d)\n",
1375 priv->tx_head, priv->tx_tail);
1376 head_list = priv->tx_list + priv->tx_head;
1378 while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1380 struct sk_buff *skb = tlan_get_skb(head_list);
1383 pci_unmap_single(priv->pci_dev, head_list->buffer[0].address,
1385 (unsigned int)TLAN_MIN_FRAME_SIZE),
1387 dev_kfree_skb_any(skb);
1388 head_list->buffer[8].address = 0;
1389 head_list->buffer[9].address = 0;
1391 if (tmp_c_stat & TLAN_CSTAT_EOC)
1394 dev->stats.tx_bytes += head_list->frame_size;
1396 head_list->c_stat = TLAN_CSTAT_UNUSED;
1397 netif_start_queue(dev);
1398 CIRC_INC(priv->tx_head, TLAN_NUM_TX_LISTS);
1399 head_list = priv->tx_list + priv->tx_head;
1404 "Received interrupt for uncompleted TX frame\n");
1407 TLAN_DBG(TLAN_DEBUG_TX,
1408 "TRANSMIT: handling TX EOC (Head=%d Tail=%d)\n",
1409 priv->tx_head, priv->tx_tail);
1410 head_list = priv->tx_list + priv->tx_head;
1411 head_list_phys = priv->tx_list_dma
1412 + sizeof(struct tlan_list)*priv->tx_head;
1413 if ((head_list->c_stat & TLAN_CSTAT_READY)
1414 == TLAN_CSTAT_READY) {
1415 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1418 priv->tx_in_progress = 0;
1422 if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1423 tlan_dio_write8(dev->base_addr,
1424 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1425 if (priv->timer.function == NULL) {
1426 priv->timer.function = tlan_timer;
1427 priv->timer.data = (unsigned long) dev;
1428 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1429 priv->timer_set_at = jiffies;
1430 priv->timer_type = TLAN_TIMER_ACTIVITY;
1431 add_timer(&priv->timer);
1432 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1433 priv->timer_set_at = jiffies;
1444 /***************************************************************
1445 * TLan_HandleStatOverflow
1450 * dev Device assigned the IRQ that was
1452 * host_int The contents of the HOST_INT
1455 * This function handles the Statistics Overflow interrupt
1456 * which means that one or more of the TLAN statistics
1457 * registers has reached 1/2 capacity and needs to be read.
1459 **************************************************************/
1461 static u32 tlan_handle_stat_overflow(struct net_device *dev, u16 host_int)
1463 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1472 /***************************************************************
1478 * dev Device assigned the IRQ that was
1480 * host_int The contents of the HOST_INT
1483 * This function handles the Rx EOF interrupt which
1484 * indicates a frame has been received by the adapter from
1485 * the net and the frame has been transferred to memory.
1486 * The function determines the bounce buffer the frame has
1487 * been loaded into, creates a new sk_buff big enough to
1488 * hold the frame, and sends it to protocol stack. It
1489 * then resets the used buffer and appends it to the end
1490 * of the list. If the frame was the last in the Rx
1491 * channel (EOC), the function restarts the receive channel
1492 * by sending an Rx Go command to the adapter. Then it
1493 * activates/continues the activity LED.
1495 **************************************************************/
1497 static u32 tlan_handle_rx_eof(struct net_device *dev, u16 host_int)
1499 struct tlan_priv *priv = netdev_priv(dev);
1502 struct tlan_list *head_list;
1503 struct sk_buff *skb;
1504 struct tlan_list *tail_list;
1506 dma_addr_t head_list_phys;
1508 TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: handling RX EOF (Head=%d Tail=%d)\n",
1509 priv->rx_head, priv->rx_tail);
1510 head_list = priv->rx_list + priv->rx_head;
1512 priv->rx_list_dma + sizeof(struct tlan_list)*priv->rx_head;
1514 while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1516 dma_addr_t frame_dma = head_list->buffer[0].address;
1517 u32 frame_size = head_list->frame_size;
1518 struct sk_buff *new_skb;
1521 if (tmp_c_stat & TLAN_CSTAT_EOC)
1524 new_skb = netdev_alloc_skb_ip_align(dev,
1525 TLAN_MAX_FRAME_SIZE + 5);
1527 goto drop_and_reuse;
1529 skb = tlan_get_skb(head_list);
1530 pci_unmap_single(priv->pci_dev, frame_dma,
1531 TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
1532 skb_put(skb, frame_size);
1534 dev->stats.rx_bytes += frame_size;
1536 skb->protocol = eth_type_trans(skb, dev);
1539 head_list->buffer[0].address =
1540 pci_map_single(priv->pci_dev, new_skb->data,
1541 TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
1543 tlan_store_skb(head_list, new_skb);
1545 head_list->forward = 0;
1546 head_list->c_stat = 0;
1547 tail_list = priv->rx_list + priv->rx_tail;
1548 tail_list->forward = head_list_phys;
1550 CIRC_INC(priv->rx_head, TLAN_NUM_RX_LISTS);
1551 CIRC_INC(priv->rx_tail, TLAN_NUM_RX_LISTS);
1552 head_list = priv->rx_list + priv->rx_head;
1553 head_list_phys = priv->rx_list_dma
1554 + sizeof(struct tlan_list)*priv->rx_head;
1559 "Received interrupt for uncompleted RX frame\n");
1563 TLAN_DBG(TLAN_DEBUG_RX,
1564 "RECEIVE: handling RX EOC (Head=%d Tail=%d)\n",
1565 priv->rx_head, priv->rx_tail);
1566 head_list = priv->rx_list + priv->rx_head;
1567 head_list_phys = priv->rx_list_dma
1568 + sizeof(struct tlan_list)*priv->rx_head;
1569 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1570 ack |= TLAN_HC_GO | TLAN_HC_RT;
1571 priv->rx_eoc_count++;
1574 if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1575 tlan_dio_write8(dev->base_addr,
1576 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1577 if (priv->timer.function == NULL) {
1578 priv->timer.function = tlan_timer;
1579 priv->timer.data = (unsigned long) dev;
1580 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1581 priv->timer_set_at = jiffies;
1582 priv->timer_type = TLAN_TIMER_ACTIVITY;
1583 add_timer(&priv->timer);
1584 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1585 priv->timer_set_at = jiffies;
1596 /***************************************************************
1602 * dev Device assigned the IRQ that was
1604 * host_int The contents of the HOST_INT
1607 * This function handles the Dummy interrupt, which is
1608 * raised whenever a test interrupt is generated by setting
1609 * the Req_Int bit of HOST_CMD to 1.
1611 **************************************************************/
1613 static u32 tlan_handle_dummy(struct net_device *dev, u16 host_int)
1615 netdev_info(dev, "Test interrupt\n");
1623 /***************************************************************
1624 * tlan_handle_tx_eoc
1629 * dev Device assigned the IRQ that was
1631 * host_int The contents of the HOST_INT
1634 * This driver is structured to determine EOC occurrences by
1635 * reading the CSTAT member of the list structure. Tx EOC
1636 * interrupts are disabled via the DIO INTDIS register.
1637 * However, TLAN chips before revision 3.0 didn't have this
1638 * functionality, so process EOC events if this is the
1641 **************************************************************/
1643 static u32 tlan_handle_tx_eoc(struct net_device *dev, u16 host_int)
1645 struct tlan_priv *priv = netdev_priv(dev);
1646 struct tlan_list *head_list;
1647 dma_addr_t head_list_phys;
1650 if (priv->tlan_rev < 0x30) {
1651 TLAN_DBG(TLAN_DEBUG_TX,
1652 "TRANSMIT: handling TX EOC (Head=%d Tail=%d) -- IRQ\n",
1653 priv->tx_head, priv->tx_tail);
1654 head_list = priv->tx_list + priv->tx_head;
1655 head_list_phys = priv->tx_list_dma
1656 + sizeof(struct tlan_list)*priv->tx_head;
1657 if ((head_list->c_stat & TLAN_CSTAT_READY)
1658 == TLAN_CSTAT_READY) {
1659 netif_stop_queue(dev);
1660 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1663 priv->tx_in_progress = 0;
1674 /***************************************************************
1675 * tlan_handle_status_check
1678 * 0 if Adapter check, 1 if Network Status check.
1680 * dev Device assigned the IRQ that was
1682 * host_int The contents of the HOST_INT
1685 * This function handles Adapter Check/Network Status
1686 * interrupts generated by the adapter. It checks the
1687 * vector in the HOST_INT register to determine if it is
1688 * an Adapter Check interrupt. If so, it resets the
1689 * adapter. Otherwise it clears the status registers
1690 * and services the PHY.
1692 **************************************************************/
1694 static u32 tlan_handle_status_check(struct net_device *dev, u16 host_int)
1696 struct tlan_priv *priv = netdev_priv(dev);
1705 if (host_int & TLAN_HI_IV_MASK) {
1706 netif_stop_queue(dev);
1707 error = inl(dev->base_addr + TLAN_CH_PARM);
1708 netdev_info(dev, "Adaptor Error = 0x%x\n", error);
1709 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1710 outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
1712 schedule_work(&priv->tlan_tqueue);
1714 netif_wake_queue(dev);
1717 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Status Check\n", dev->name);
1718 phy = priv->phy[priv->phy_num];
1720 net_sts = tlan_dio_read8(dev->base_addr, TLAN_NET_STS);
1722 tlan_dio_write8(dev->base_addr, TLAN_NET_STS, net_sts);
1723 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Net_Sts = %x\n",
1724 dev->name, (unsigned) net_sts);
1726 if ((net_sts & TLAN_NET_STS_MIRQ) && (priv->phy_num == 0)) {
1727 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_STS, &tlphy_sts);
1728 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
1729 if (!(tlphy_sts & TLAN_TS_POLOK) &&
1730 !(tlphy_ctl & TLAN_TC_SWAPOL)) {
1731 tlphy_ctl |= TLAN_TC_SWAPOL;
1732 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1734 } else if ((tlphy_sts & TLAN_TS_POLOK) &&
1735 (tlphy_ctl & TLAN_TC_SWAPOL)) {
1736 tlphy_ctl &= ~TLAN_TC_SWAPOL;
1737 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1742 tlan_phy_print(dev);
1753 /***************************************************************
1754 * tlan_handle_rx_eoc
1759 * dev Device assigned the IRQ that was
1761 * host_int The contents of the HOST_INT
1764 * This driver is structured to determine EOC occurrences by
1765 * reading the CSTAT member of the list structure. Rx EOC
1766 * interrupts are disabled via the DIO INTDIS register.
1767 * However, TLAN chips before revision 3.0 didn't have this
1768 * CSTAT member or a INTDIS register, so if this chip is
1769 * pre-3.0, process EOC interrupts normally.
1771 **************************************************************/
1773 static u32 tlan_handle_rx_eoc(struct net_device *dev, u16 host_int)
1775 struct tlan_priv *priv = netdev_priv(dev);
1776 dma_addr_t head_list_phys;
1779 if (priv->tlan_rev < 0x30) {
1780 TLAN_DBG(TLAN_DEBUG_RX,
1781 "RECEIVE: Handling RX EOC (head=%d tail=%d) -- IRQ\n",
1782 priv->rx_head, priv->rx_tail);
1783 head_list_phys = priv->rx_list_dma
1784 + sizeof(struct tlan_list)*priv->rx_head;
1785 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1786 ack |= TLAN_HC_GO | TLAN_HC_RT;
1787 priv->rx_eoc_count++;
1797 /*****************************************************************************
1798 ******************************************************************************
1800 ThunderLAN driver timer function
1802 ******************************************************************************
1803 *****************************************************************************/
1806 /***************************************************************
1812 * data A value given to add timer when
1813 * add_timer was called.
1815 * This function handles timed functionality for the
1816 * TLAN driver. The two current timer uses are for
1817 * delaying for autonegotionation and driving the ACT LED.
1818 * - Autonegotiation requires being allowed about
1819 * 2 1/2 seconds before attempting to transmit a
1820 * packet. It would be a very bad thing to hang
1821 * the kernel this long, so the driver doesn't
1822 * allow transmission 'til after this time, for
1823 * certain PHYs. It would be much nicer if all
1824 * PHYs were interrupt-capable like the internal
1826 * - The ACT LED, which shows adapter activity, is
1827 * driven by the driver, and so must be left on
1828 * for a short period to power up the LED so it
1829 * can be seen. This delay can be changed by
1830 * changing the TLAN_TIMER_ACT_DELAY in tlan.h,
1831 * if desired. 100 ms produces a slightly
1832 * sluggish response.
1834 **************************************************************/
1836 static void tlan_timer(unsigned long data)
1838 struct net_device *dev = (struct net_device *) data;
1839 struct tlan_priv *priv = netdev_priv(dev);
1841 unsigned long flags = 0;
1843 priv->timer.function = NULL;
1845 switch (priv->timer_type) {
1846 case TLAN_TIMER_PHY_PDOWN:
1847 tlan_phy_power_down(dev);
1849 case TLAN_TIMER_PHY_PUP:
1850 tlan_phy_power_up(dev);
1852 case TLAN_TIMER_PHY_RESET:
1853 tlan_phy_reset(dev);
1855 case TLAN_TIMER_PHY_START_LINK:
1856 tlan_phy_start_link(dev);
1858 case TLAN_TIMER_PHY_FINISH_AN:
1859 tlan_phy_finish_auto_neg(dev);
1861 case TLAN_TIMER_FINISH_RESET:
1862 tlan_finish_reset(dev);
1864 case TLAN_TIMER_ACTIVITY:
1865 spin_lock_irqsave(&priv->lock, flags);
1866 if (priv->timer.function == NULL) {
1867 elapsed = jiffies - priv->timer_set_at;
1868 if (elapsed >= TLAN_TIMER_ACT_DELAY) {
1869 tlan_dio_write8(dev->base_addr,
1870 TLAN_LED_REG, TLAN_LED_LINK);
1872 priv->timer.function = tlan_timer;
1873 priv->timer.expires = priv->timer_set_at
1874 + TLAN_TIMER_ACT_DELAY;
1875 spin_unlock_irqrestore(&priv->lock, flags);
1876 add_timer(&priv->timer);
1880 spin_unlock_irqrestore(&priv->lock, flags);
1889 /*****************************************************************************
1890 ******************************************************************************
1892 ThunderLAN driver adapter related routines
1894 ******************************************************************************
1895 *****************************************************************************/
1898 /***************************************************************
1904 * dev The device structure with the list
1905 * stuctures to be reset.
1907 * This routine sets the variables associated with managing
1908 * the TLAN lists to their initial values.
1910 **************************************************************/
1912 static void tlan_reset_lists(struct net_device *dev)
1914 struct tlan_priv *priv = netdev_priv(dev);
1916 struct tlan_list *list;
1917 dma_addr_t list_phys;
1918 struct sk_buff *skb;
1922 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1923 list = priv->tx_list + i;
1924 list->c_stat = TLAN_CSTAT_UNUSED;
1925 list->buffer[0].address = 0;
1926 list->buffer[2].count = 0;
1927 list->buffer[2].address = 0;
1928 list->buffer[8].address = 0;
1929 list->buffer[9].address = 0;
1933 priv->rx_tail = TLAN_NUM_RX_LISTS - 1;
1934 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1935 list = priv->rx_list + i;
1936 list_phys = priv->rx_list_dma + sizeof(struct tlan_list)*i;
1937 list->c_stat = TLAN_CSTAT_READY;
1938 list->frame_size = TLAN_MAX_FRAME_SIZE;
1939 list->buffer[0].count = TLAN_MAX_FRAME_SIZE | TLAN_LAST_BUFFER;
1940 skb = netdev_alloc_skb_ip_align(dev, TLAN_MAX_FRAME_SIZE + 5);
1944 list->buffer[0].address = pci_map_single(priv->pci_dev,
1946 TLAN_MAX_FRAME_SIZE,
1947 PCI_DMA_FROMDEVICE);
1948 tlan_store_skb(list, skb);
1949 list->buffer[1].count = 0;
1950 list->buffer[1].address = 0;
1951 list->forward = list_phys + sizeof(struct tlan_list);
1954 /* in case ran out of memory early, clear bits */
1955 while (i < TLAN_NUM_RX_LISTS) {
1956 tlan_store_skb(priv->rx_list + i, NULL);
1964 static void tlan_free_lists(struct net_device *dev)
1966 struct tlan_priv *priv = netdev_priv(dev);
1968 struct tlan_list *list;
1969 struct sk_buff *skb;
1971 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1972 list = priv->tx_list + i;
1973 skb = tlan_get_skb(list);
1977 list->buffer[0].address,
1979 (unsigned int)TLAN_MIN_FRAME_SIZE),
1981 dev_kfree_skb_any(skb);
1982 list->buffer[8].address = 0;
1983 list->buffer[9].address = 0;
1987 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1988 list = priv->rx_list + i;
1989 skb = tlan_get_skb(list);
1991 pci_unmap_single(priv->pci_dev,
1992 list->buffer[0].address,
1993 TLAN_MAX_FRAME_SIZE,
1994 PCI_DMA_FROMDEVICE);
1995 dev_kfree_skb_any(skb);
1996 list->buffer[8].address = 0;
1997 list->buffer[9].address = 0;
2005 /***************************************************************
2011 * io_base Base IO port of the device of
2012 * which to print DIO registers.
2014 * This function prints out all the internal (DIO)
2015 * registers of a TLAN chip.
2017 **************************************************************/
2019 static void tlan_print_dio(u16 io_base)
2024 pr_info("Contents of internal registers for io base 0x%04hx\n",
2026 pr_info("Off. +0 +4\n");
2027 for (i = 0; i < 0x4C; i += 8) {
2028 data0 = tlan_dio_read32(io_base, i);
2029 data1 = tlan_dio_read32(io_base, i + 0x4);
2030 pr_info("0x%02x 0x%08x 0x%08x\n", i, data0, data1);
2038 /***************************************************************
2044 * list A pointer to the struct tlan_list structure to
2046 * type A string to designate type of list,
2048 * num The index of the list.
2050 * This function prints out the contents of the list
2051 * pointed to by the list parameter.
2053 **************************************************************/
2055 static void tlan_print_list(struct tlan_list *list, char *type, int num)
2059 pr_info("%s List %d at %p\n", type, num, list);
2060 pr_info(" Forward = 0x%08x\n", list->forward);
2061 pr_info(" CSTAT = 0x%04hx\n", list->c_stat);
2062 pr_info(" Frame Size = 0x%04hx\n", list->frame_size);
2063 /* for (i = 0; i < 10; i++) { */
2064 for (i = 0; i < 2; i++) {
2065 pr_info(" Buffer[%d].count, addr = 0x%08x, 0x%08x\n",
2066 i, list->buffer[i].count, list->buffer[i].address);
2074 /***************************************************************
2075 * tlan_read_and_clear_stats
2080 * dev Pointer to device structure of adapter
2081 * to which to read stats.
2082 * record Flag indicating whether to add
2084 * This functions reads all the internal status registers
2085 * of the TLAN chip, which clears them as a side effect.
2086 * It then either adds the values to the device's status
2087 * struct, or discards them, depending on whether record
2088 * is TLAN_RECORD (!=0) or TLAN_IGNORE (==0).
2090 **************************************************************/
2092 static void tlan_read_and_clear_stats(struct net_device *dev, int record)
2094 u32 tx_good, tx_under;
2095 u32 rx_good, rx_over;
2096 u32 def_tx, crc, code;
2097 u32 multi_col, single_col;
2098 u32 excess_col, late_col, loss;
2100 outw(TLAN_GOOD_TX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2101 tx_good = inb(dev->base_addr + TLAN_DIO_DATA);
2102 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2103 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2104 tx_under = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2106 outw(TLAN_GOOD_RX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2107 rx_good = inb(dev->base_addr + TLAN_DIO_DATA);
2108 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2109 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2110 rx_over = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2112 outw(TLAN_DEFERRED_TX, dev->base_addr + TLAN_DIO_ADR);
2113 def_tx = inb(dev->base_addr + TLAN_DIO_DATA);
2114 def_tx += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2115 crc = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2116 code = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2118 outw(TLAN_MULTICOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2119 multi_col = inb(dev->base_addr + TLAN_DIO_DATA);
2120 multi_col += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2121 single_col = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2122 single_col += inb(dev->base_addr + TLAN_DIO_DATA + 3) << 8;
2124 outw(TLAN_EXCESSCOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2125 excess_col = inb(dev->base_addr + TLAN_DIO_DATA);
2126 late_col = inb(dev->base_addr + TLAN_DIO_DATA + 1);
2127 loss = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2130 dev->stats.rx_packets += rx_good;
2131 dev->stats.rx_errors += rx_over + crc + code;
2132 dev->stats.tx_packets += tx_good;
2133 dev->stats.tx_errors += tx_under + loss;
2134 dev->stats.collisions += multi_col
2135 + single_col + excess_col + late_col;
2137 dev->stats.rx_over_errors += rx_over;
2138 dev->stats.rx_crc_errors += crc;
2139 dev->stats.rx_frame_errors += code;
2141 dev->stats.tx_aborted_errors += tx_under;
2142 dev->stats.tx_carrier_errors += loss;
2150 /***************************************************************
2156 * dev Pointer to device structure of adapter
2159 * This function resets the adapter and it's physical
2160 * device. See Chap. 3, pp. 9-10 of the "ThunderLAN
2161 * Programmer's Guide" for details. The routine tries to
2162 * implement what is detailed there, though adjustments
2165 **************************************************************/
2168 tlan_reset_adapter(struct net_device *dev)
2170 struct tlan_priv *priv = netdev_priv(dev);
2176 priv->tlan_full_duplex = false;
2177 priv->phy_online = 0;
2178 netif_carrier_off(dev);
2180 /* 1. Assert reset bit. */
2182 data = inl(dev->base_addr + TLAN_HOST_CMD);
2183 data |= TLAN_HC_AD_RST;
2184 outl(data, dev->base_addr + TLAN_HOST_CMD);
2188 /* 2. Turn off interrupts. (Probably isn't necessary) */
2190 data = inl(dev->base_addr + TLAN_HOST_CMD);
2191 data |= TLAN_HC_INT_OFF;
2192 outl(data, dev->base_addr + TLAN_HOST_CMD);
2194 /* 3. Clear AREGs and HASHs. */
2196 for (i = TLAN_AREG_0; i <= TLAN_HASH_2; i += 4)
2197 tlan_dio_write32(dev->base_addr, (u16) i, 0);
2199 /* 4. Setup NetConfig register. */
2201 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN;
2202 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2204 /* 5. Load Ld_Tmr and Ld_Thr in HOST_CMD. */
2206 outl(TLAN_HC_LD_TMR | 0x3f, dev->base_addr + TLAN_HOST_CMD);
2207 outl(TLAN_HC_LD_THR | 0x9, dev->base_addr + TLAN_HOST_CMD);
2209 /* 6. Unreset the MII by setting NMRST (in NetSio) to 1. */
2211 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2212 addr = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2213 tlan_set_bit(TLAN_NET_SIO_NMRST, addr);
2215 /* 7. Setup the remaining registers. */
2217 if (priv->tlan_rev >= 0x30) {
2218 data8 = TLAN_ID_TX_EOC | TLAN_ID_RX_EOC;
2219 tlan_dio_write8(dev->base_addr, TLAN_INT_DIS, data8);
2221 tlan_phy_detect(dev);
2222 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN;
2224 if (priv->adapter->flags & TLAN_ADAPTER_BIT_RATE_PHY) {
2225 data |= TLAN_NET_CFG_BIT;
2226 if (priv->aui == 1) {
2227 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x0a);
2228 } else if (priv->duplex == TLAN_DUPLEX_FULL) {
2229 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x00);
2230 priv->tlan_full_duplex = true;
2232 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x08);
2236 /* don't power down internal PHY if we're going to use it */
2237 if (priv->phy_num == 0 ||
2238 (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10))
2239 data |= TLAN_NET_CFG_PHY_EN;
2240 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2242 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY)
2243 tlan_finish_reset(dev);
2245 tlan_phy_power_down(dev);
2253 tlan_finish_reset(struct net_device *dev)
2255 struct tlan_priv *priv = netdev_priv(dev);
2263 u16 tlphy_id1, tlphy_id2;
2266 phy = priv->phy[priv->phy_num];
2268 data = TLAN_NET_CMD_NRESET | TLAN_NET_CMD_NWRAP;
2269 if (priv->tlan_full_duplex)
2270 data |= TLAN_NET_CMD_DUPLEX;
2271 tlan_dio_write8(dev->base_addr, TLAN_NET_CMD, data);
2272 data = TLAN_NET_MASK_MASK4 | TLAN_NET_MASK_MASK5;
2273 if (priv->phy_num == 0)
2274 data |= TLAN_NET_MASK_MASK7;
2275 tlan_dio_write8(dev->base_addr, TLAN_NET_MASK, data);
2276 tlan_dio_write16(dev->base_addr, TLAN_MAX_RX, ((1536)+7)&~7);
2277 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &tlphy_id1);
2278 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &tlphy_id2);
2280 if ((priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) ||
2282 status = MII_GS_LINK;
2283 netdev_info(dev, "Link forced\n");
2285 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2287 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2288 if (status & MII_GS_LINK) {
2289 /* We only support link info on Nat.Sem. PHY's */
2290 if ((tlphy_id1 == NAT_SEM_ID1) &&
2291 (tlphy_id2 == NAT_SEM_ID2)) {
2292 tlan_mii_read_reg(dev, phy, MII_AN_LPA,
2294 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_PAR,
2298 "Link active, %s %uMbps %s-Duplex\n",
2299 !(tlphy_par & TLAN_PHY_AN_EN_STAT)
2300 ? "forced" : "Autonegotiation enabled,",
2301 tlphy_par & TLAN_PHY_SPEED_100
2303 tlphy_par & TLAN_PHY_DUPLEX_FULL
2306 if (tlphy_par & TLAN_PHY_AN_EN_STAT) {
2307 netdev_info(dev, "Partner capability:");
2308 for (i = 5; i < 10; i++)
2309 if (partner & (1 << i))
2315 netdev_info(dev, "Link active\n");
2316 /* Enabling link beat monitoring */
2317 priv->media_timer.function = tlan_phy_monitor;
2318 priv->media_timer.data = (unsigned long) dev;
2319 priv->media_timer.expires = jiffies + HZ;
2320 add_timer(&priv->media_timer);
2324 if (priv->phy_num == 0) {
2325 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
2326 tlphy_ctl |= TLAN_TC_INTEN;
2327 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tlphy_ctl);
2328 sio = tlan_dio_read8(dev->base_addr, TLAN_NET_SIO);
2329 sio |= TLAN_NET_SIO_MINTEN;
2330 tlan_dio_write8(dev->base_addr, TLAN_NET_SIO, sio);
2333 if (status & MII_GS_LINK) {
2334 tlan_set_mac(dev, 0, dev->dev_addr);
2335 priv->phy_online = 1;
2336 outb((TLAN_HC_INT_ON >> 8), dev->base_addr + TLAN_HOST_CMD + 1);
2337 if (debug >= 1 && debug != TLAN_DEBUG_PROBE)
2338 outb((TLAN_HC_REQ_INT >> 8),
2339 dev->base_addr + TLAN_HOST_CMD + 1);
2340 outl(priv->rx_list_dma, dev->base_addr + TLAN_CH_PARM);
2341 outl(TLAN_HC_GO | TLAN_HC_RT, dev->base_addr + TLAN_HOST_CMD);
2342 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK);
2343 netif_carrier_on(dev);
2345 netdev_info(dev, "Link inactive, will retry in 10 secs...\n");
2346 tlan_set_timer(dev, (10*HZ), TLAN_TIMER_FINISH_RESET);
2349 tlan_set_multicast_list(dev);
2356 /***************************************************************
2362 * dev Pointer to device structure of adapter
2363 * on which to change the AREG.
2364 * areg The AREG to set the address in (0 - 3).
2365 * mac A pointer to an array of chars. Each
2366 * element stores one byte of the address.
2367 * IE, it isn't in ascii.
2369 * This function transfers a MAC address to one of the
2370 * TLAN AREGs (address registers). The TLAN chip locks
2371 * the register on writing to offset 0 and unlocks the
2372 * register after writing to offset 5. If NULL is passed
2373 * in mac, then the AREG is filled with 0's.
2375 **************************************************************/
2377 static void tlan_set_mac(struct net_device *dev, int areg, char *mac)
2384 for (i = 0; i < 6; i++)
2385 tlan_dio_write8(dev->base_addr,
2386 TLAN_AREG_0 + areg + i, mac[i]);
2388 for (i = 0; i < 6; i++)
2389 tlan_dio_write8(dev->base_addr,
2390 TLAN_AREG_0 + areg + i, 0);
2398 /*****************************************************************************
2399 ******************************************************************************
2401 ThunderLAN driver PHY layer routines
2403 ******************************************************************************
2404 *****************************************************************************/
2408 /*********************************************************************
2414 * dev A pointer to the device structure of the
2415 * TLAN device having the PHYs to be detailed.
2417 * This function prints the registers a PHY (aka transceiver).
2419 ********************************************************************/
2421 static void tlan_phy_print(struct net_device *dev)
2423 struct tlan_priv *priv = netdev_priv(dev);
2424 u16 i, data0, data1, data2, data3, phy;
2426 phy = priv->phy[priv->phy_num];
2428 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2429 netdev_info(dev, "Unmanaged PHY\n");
2430 } else if (phy <= TLAN_PHY_MAX_ADDR) {
2431 netdev_info(dev, "PHY 0x%02x\n", phy);
2432 pr_info(" Off. +0 +1 +2 +3\n");
2433 for (i = 0; i < 0x20; i += 4) {
2434 tlan_mii_read_reg(dev, phy, i, &data0);
2435 tlan_mii_read_reg(dev, phy, i + 1, &data1);
2436 tlan_mii_read_reg(dev, phy, i + 2, &data2);
2437 tlan_mii_read_reg(dev, phy, i + 3, &data3);
2438 pr_info(" 0x%02x 0x%04hx 0x%04hx 0x%04hx 0x%04hx\n",
2439 i, data0, data1, data2, data3);
2442 netdev_info(dev, "Invalid PHY\n");
2450 /*********************************************************************
2456 * dev A pointer to the device structure of the adapter
2457 * for which the PHY needs determined.
2459 * So far I've found that adapters which have external PHYs
2460 * may also use the internal PHY for part of the functionality.
2461 * (eg, AUI/Thinnet). This function finds out if this TLAN
2462 * chip has an internal PHY, and then finds the first external
2463 * PHY (starting from address 0) if it exists).
2465 ********************************************************************/
2467 static void tlan_phy_detect(struct net_device *dev)
2469 struct tlan_priv *priv = netdev_priv(dev);
2475 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2476 priv->phy_num = 0xffff;
2480 tlan_mii_read_reg(dev, TLAN_PHY_MAX_ADDR, MII_GEN_ID_HI, &hi);
2483 priv->phy[0] = TLAN_PHY_MAX_ADDR;
2485 priv->phy[0] = TLAN_PHY_NONE;
2487 priv->phy[1] = TLAN_PHY_NONE;
2488 for (phy = 0; phy <= TLAN_PHY_MAX_ADDR; phy++) {
2489 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &control);
2490 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &hi);
2491 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &lo);
2492 if ((control != 0xffff) ||
2493 (hi != 0xffff) || (lo != 0xffff)) {
2494 TLAN_DBG(TLAN_DEBUG_GNRL,
2495 "PHY found at %02x %04x %04x %04x\n",
2496 phy, control, hi, lo);
2497 if ((priv->phy[1] == TLAN_PHY_NONE) &&
2498 (phy != TLAN_PHY_MAX_ADDR)) {
2504 if (priv->phy[1] != TLAN_PHY_NONE)
2506 else if (priv->phy[0] != TLAN_PHY_NONE)
2509 netdev_info(dev, "Cannot initialize device, no PHY was found!\n");
2516 static void tlan_phy_power_down(struct net_device *dev)
2518 struct tlan_priv *priv = netdev_priv(dev);
2521 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering down PHY(s).\n", dev->name);
2522 value = MII_GC_PDOWN | MII_GC_LOOPBK | MII_GC_ISOLATE;
2523 tlan_mii_sync(dev->base_addr);
2524 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2525 if ((priv->phy_num == 0) && (priv->phy[1] != TLAN_PHY_NONE)) {
2526 /* if using internal PHY, the external PHY must be powered on */
2527 if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10)
2528 value = MII_GC_ISOLATE; /* just isolate it from MII */
2529 tlan_mii_sync(dev->base_addr);
2530 tlan_mii_write_reg(dev, priv->phy[1], MII_GEN_CTL, value);
2533 /* Wait for 50 ms and powerup
2534 * This is abitrary. It is intended to make sure the
2535 * transceiver settles.
2537 tlan_set_timer(dev, msecs_to_jiffies(50), TLAN_TIMER_PHY_PUP);
2544 static void tlan_phy_power_up(struct net_device *dev)
2546 struct tlan_priv *priv = netdev_priv(dev);
2549 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering up PHY.\n", dev->name);
2550 tlan_mii_sync(dev->base_addr);
2551 value = MII_GC_LOOPBK;
2552 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2553 tlan_mii_sync(dev->base_addr);
2554 /* Wait for 500 ms and reset the
2555 * transceiver. The TLAN docs say both 50 ms and
2556 * 500 ms, so do the longer, just in case.
2558 tlan_set_timer(dev, msecs_to_jiffies(500), TLAN_TIMER_PHY_RESET);
2565 static void tlan_phy_reset(struct net_device *dev)
2567 struct tlan_priv *priv = netdev_priv(dev);
2570 unsigned long timeout = jiffies + HZ;
2572 phy = priv->phy[priv->phy_num];
2574 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Resetting PHY.\n", dev->name);
2575 tlan_mii_sync(dev->base_addr);
2576 value = MII_GC_LOOPBK | MII_GC_RESET;
2577 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, value);
2579 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value);
2580 if (time_after(jiffies, timeout)) {
2581 netdev_err(dev, "PHY reset timeout\n");
2584 } while (value & MII_GC_RESET);
2586 /* Wait for 500 ms and initialize.
2587 * I don't remember why I wait this long.
2588 * I've changed this to 50ms, as it seems long enough.
2590 tlan_set_timer(dev, msecs_to_jiffies(50), TLAN_TIMER_PHY_START_LINK);
2597 static void tlan_phy_start_link(struct net_device *dev)
2599 struct tlan_priv *priv = netdev_priv(dev);
2607 phy = priv->phy[priv->phy_num];
2608 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Trying to activate link.\n", dev->name);
2609 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2610 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &ability);
2612 if ((status & MII_GS_AUTONEG) &&
2614 ability = status >> 11;
2615 if (priv->speed == TLAN_SPEED_10 &&
2616 priv->duplex == TLAN_DUPLEX_HALF) {
2617 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0000);
2618 } else if (priv->speed == TLAN_SPEED_10 &&
2619 priv->duplex == TLAN_DUPLEX_FULL) {
2620 priv->tlan_full_duplex = true;
2621 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0100);
2622 } else if (priv->speed == TLAN_SPEED_100 &&
2623 priv->duplex == TLAN_DUPLEX_HALF) {
2624 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2000);
2625 } else if (priv->speed == TLAN_SPEED_100 &&
2626 priv->duplex == TLAN_DUPLEX_FULL) {
2627 priv->tlan_full_duplex = true;
2628 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2100);
2631 /* Set Auto-Neg advertisement */
2632 tlan_mii_write_reg(dev, phy, MII_AN_ADV,
2633 (ability << 5) | 1);
2634 /* Enablee Auto-Neg */
2635 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1000);
2636 /* Restart Auto-Neg */
2637 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1200);
2638 /* Wait for 4 sec for autonegotiation
2639 * to complete. The max spec time is less than this
2640 * but the card need additional time to start AN.
2641 * .5 sec should be plenty extra.
2643 netdev_info(dev, "Starting autonegotiation\n");
2644 tlan_set_timer(dev, (2*HZ), TLAN_TIMER_PHY_FINISH_AN);
2650 if ((priv->aui) && (priv->phy_num != 0)) {
2652 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN
2653 | TLAN_NET_CFG_PHY_EN;
2654 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data);
2655 tlan_set_timer(dev, msecs_to_jiffies(40), TLAN_TIMER_PHY_PDOWN);
2657 } else if (priv->phy_num == 0) {
2659 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tctl);
2661 tctl |= TLAN_TC_AUISEL;
2663 tctl &= ~TLAN_TC_AUISEL;
2664 if (priv->duplex == TLAN_DUPLEX_FULL) {
2665 control |= MII_GC_DUPLEX;
2666 priv->tlan_full_duplex = true;
2668 if (priv->speed == TLAN_SPEED_100)
2669 control |= MII_GC_SPEEDSEL;
2671 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, control);
2672 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tctl);
2675 /* Wait for 2 sec to give the transceiver time
2676 * to establish link.
2678 tlan_set_timer(dev, (4*HZ), TLAN_TIMER_FINISH_RESET);
2685 static void tlan_phy_finish_auto_neg(struct net_device *dev)
2687 struct tlan_priv *priv = netdev_priv(dev);
2694 phy = priv->phy[priv->phy_num];
2696 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2698 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2700 if (!(status & MII_GS_AUTOCMPLT)) {
2701 /* Wait for 8 sec to give the process
2702 * more time. Perhaps we should fail after a while.
2704 tlan_set_timer(dev, 2 * HZ, TLAN_TIMER_PHY_FINISH_AN);
2708 netdev_info(dev, "Autonegotiation complete\n");
2709 tlan_mii_read_reg(dev, phy, MII_AN_ADV, &an_adv);
2710 tlan_mii_read_reg(dev, phy, MII_AN_LPA, &an_lpa);
2711 mode = an_adv & an_lpa & 0x03E0;
2713 priv->tlan_full_duplex = true;
2714 else if (!(mode & 0x0080) && (mode & 0x0040))
2715 priv->tlan_full_duplex = true;
2717 /* switch to internal PHY for 10 Mbps */
2718 if ((!(mode & 0x0180)) &&
2719 (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) &&
2720 (priv->phy_num != 0)) {
2722 tlan_set_timer(dev, msecs_to_jiffies(400), TLAN_TIMER_PHY_PDOWN);
2726 if (priv->phy_num == 0) {
2727 if ((priv->duplex == TLAN_DUPLEX_FULL) ||
2728 (an_adv & an_lpa & 0x0040)) {
2729 tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2730 MII_GC_AUTOENB | MII_GC_DUPLEX);
2731 netdev_info(dev, "Starting internal PHY with FULL-DUPLEX\n");
2733 tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2735 netdev_info(dev, "Starting internal PHY with HALF-DUPLEX\n");
2739 /* Wait for 100 ms. No reason in partiticular.
2741 tlan_set_timer(dev, msecs_to_jiffies(100), TLAN_TIMER_FINISH_RESET);
2746 /*********************************************************************
2754 * data The device structure of this device.
2757 * This function monitors PHY condition by reading the status
2758 * register via the MII bus, controls LINK LED and notifies the
2759 * kernel about link state.
2761 *******************************************************************/
2763 static void tlan_phy_monitor(unsigned long data)
2765 struct net_device *dev = (struct net_device *) data;
2766 struct tlan_priv *priv = netdev_priv(dev);
2770 phy = priv->phy[priv->phy_num];
2772 /* Get PHY status register */
2773 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &phy_status);
2775 /* Check if link has been lost */
2776 if (!(phy_status & MII_GS_LINK)) {
2777 if (netif_carrier_ok(dev)) {
2778 printk(KERN_DEBUG "TLAN: %s has lost link\n",
2780 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, 0);
2781 netif_carrier_off(dev);
2782 if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) {
2783 /* power down internal PHY */
2784 u16 data = MII_GC_PDOWN | MII_GC_LOOPBK |
2787 tlan_mii_sync(dev->base_addr);
2788 tlan_mii_write_reg(dev, priv->phy[0],
2790 /* set to external PHY */
2792 /* restart autonegotiation */
2793 tlan_set_timer(dev, msecs_to_jiffies(400),
2794 TLAN_TIMER_PHY_PDOWN);
2800 /* Link restablished? */
2801 if ((phy_status & MII_GS_LINK) && !netif_carrier_ok(dev)) {
2802 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK);
2803 printk(KERN_DEBUG "TLAN: %s has reestablished link\n",
2805 netif_carrier_on(dev);
2807 priv->media_timer.expires = jiffies + HZ;
2808 add_timer(&priv->media_timer);
2812 /*****************************************************************************
2813 ******************************************************************************
2815 ThunderLAN driver MII routines
2817 these routines are based on the information in chap. 2 of the
2818 "ThunderLAN Programmer's Guide", pp. 15-24.
2820 ******************************************************************************
2821 *****************************************************************************/
2824 /***************************************************************
2828 * false if ack received ok
2829 * true if no ack received or other error
2832 * dev The device structure containing
2833 * The io address and interrupt count
2835 * phy The address of the PHY to be queried.
2836 * reg The register whose contents are to be
2838 * val A pointer to a variable to store the
2841 * This function uses the TLAN's MII bus to retrieve the contents
2842 * of a given register on a PHY. It sends the appropriate info
2843 * and then reads the 16-bit register value from the MII bus via
2844 * the TLAN SIO register.
2846 **************************************************************/
2849 tlan_mii_read_reg(struct net_device *dev, u16 phy, u16 reg, u16 *val)
2856 struct tlan_priv *priv = netdev_priv(dev);
2857 unsigned long flags = 0;
2860 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2861 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2864 spin_lock_irqsave(&priv->lock, flags);
2866 tlan_mii_sync(dev->base_addr);
2868 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
2870 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
2872 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */
2873 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* read (10b) */
2874 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */
2875 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */
2878 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio); /* change direction */
2880 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* clock idle bit */
2881 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2882 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* wait 300ns */
2884 nack = tlan_get_bit(TLAN_NET_SIO_MDATA, sio); /* check for ACK */
2885 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); /* finish ACK */
2886 if (nack) { /* no ACK, so fake it */
2887 for (i = 0; i < 16; i++) {
2888 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2889 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2893 } else { /* ACK, so read data */
2894 for (tmp = 0, i = 0x8000; i; i >>= 1) {
2895 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2896 if (tlan_get_bit(TLAN_NET_SIO_MDATA, sio))
2898 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2903 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
2904 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2907 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
2912 spin_unlock_irqrestore(&priv->lock, flags);
2921 /***************************************************************
2922 * tlan_mii_send_data
2927 * base_port The base IO port of the adapter in
2929 * dev The address of the PHY to be queried.
2930 * data The value to be placed on the MII bus.
2931 * num_bits The number of bits in data that are to
2932 * be placed on the MII bus.
2934 * This function sends on sequence of bits on the MII
2935 * configuration bus.
2937 **************************************************************/
2939 static void tlan_mii_send_data(u16 base_port, u32 data, unsigned num_bits)
2947 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2948 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2949 tlan_set_bit(TLAN_NET_SIO_MTXEN, sio);
2951 for (i = (0x1 << (num_bits - 1)); i; i >>= 1) {
2952 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2953 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2955 tlan_set_bit(TLAN_NET_SIO_MDATA, sio);
2957 tlan_clear_bit(TLAN_NET_SIO_MDATA, sio);
2958 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2959 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2967 /***************************************************************
2973 * base_port The base IO port of the adapter in
2976 * This functions syncs all PHYs in terms of the MII configuration
2979 **************************************************************/
2981 static void tlan_mii_sync(u16 base_port)
2986 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2987 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2989 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio);
2990 for (i = 0; i < 32; i++) {
2991 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2992 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
3000 /***************************************************************
3001 * tlan_mii_write_reg
3006 * dev The device structure for the device
3008 * phy The address of the PHY to be written to.
3009 * reg The register whose contents are to be
3011 * val The value to be written to the register.
3013 * This function uses the TLAN's MII bus to write the contents of a
3014 * given register on a PHY. It sends the appropriate info and then
3015 * writes the 16-bit register value from the MII configuration bus
3016 * via the TLAN SIO register.
3018 **************************************************************/
3021 tlan_mii_write_reg(struct net_device *dev, u16 phy, u16 reg, u16 val)
3025 unsigned long flags = 0;
3026 struct tlan_priv *priv = netdev_priv(dev);
3028 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
3029 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
3032 spin_lock_irqsave(&priv->lock, flags);
3034 tlan_mii_sync(dev->base_addr);
3036 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
3038 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
3040 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */
3041 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* write (01b) */
3042 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */
3043 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */
3045 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* send ACK */
3046 tlan_mii_send_data(dev->base_addr, val, 16); /* send data */
3048 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
3049 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
3052 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
3055 spin_unlock_irqrestore(&priv->lock, flags);
3062 /*****************************************************************************
3063 ******************************************************************************
3065 ThunderLAN driver eeprom routines
3067 the Compaq netelligent 10 and 10/100 cards use a microchip 24C02A
3068 EEPROM. these functions are based on information in microchip's
3069 data sheet. I don't know how well this functions will work with
3072 ******************************************************************************
3073 *****************************************************************************/
3076 /***************************************************************
3077 * tlan_ee_send_start
3082 * io_base The IO port base address for the
3083 * TLAN device with the EEPROM to
3086 * This function sends a start cycle to an EEPROM attached
3089 **************************************************************/
3091 static void tlan_ee_send_start(u16 io_base)
3095 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3096 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3098 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3099 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3100 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3101 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3102 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3109 /***************************************************************
3113 * If the correct ack was received, 0, otherwise 1
3114 * Parms: io_base The IO port base address for the
3115 * TLAN device with the EEPROM to
3117 * data The 8 bits of information to
3118 * send to the EEPROM.
3119 * stop If TLAN_EEPROM_STOP is passed, a
3120 * stop cycle is sent after the
3121 * byte is sent after the ack is
3124 * This function sends a byte on the serial EEPROM line,
3125 * driving the clock to send each bit. The function then
3126 * reverses transmission direction and reads an acknowledge
3129 **************************************************************/
3131 static int tlan_ee_send_byte(u16 io_base, u8 data, int stop)
3137 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3138 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3140 /* Assume clock is low, tx is enabled; */
3141 for (place = 0x80; place != 0; place >>= 1) {
3143 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3145 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3146 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3147 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3149 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3150 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3151 err = tlan_get_bit(TLAN_NET_SIO_EDATA, sio);
3152 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3153 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3155 if ((!err) && stop) {
3156 /* STOP, raise data while clock is high */
3157 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3158 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3159 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3169 /***************************************************************
3170 * tlan_ee_receive_byte
3175 * io_base The IO port base address for the
3176 * TLAN device with the EEPROM to
3178 * data An address to a char to hold the
3179 * data sent from the EEPROM.
3180 * stop If TLAN_EEPROM_STOP is passed, a
3181 * stop cycle is sent after the
3182 * byte is received, and no ack is
3185 * This function receives 8 bits of data from the EEPROM
3186 * over the serial link. It then sends and ack bit, or no
3187 * ack and a stop bit. This function is used to retrieve
3188 * data after the address of a byte in the EEPROM has been
3191 **************************************************************/
3193 static void tlan_ee_receive_byte(u16 io_base, u8 *data, int stop)
3198 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3199 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3202 /* Assume clock is low, tx is enabled; */
3203 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3204 for (place = 0x80; place; place >>= 1) {
3205 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3206 if (tlan_get_bit(TLAN_NET_SIO_EDATA, sio))
3208 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3211 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3213 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); /* ack = 0 */
3214 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3215 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3217 tlan_set_bit(TLAN_NET_SIO_EDATA, sio); /* no ack = 1 (?) */
3218 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3219 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3220 /* STOP, raise data while clock is high */
3221 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3222 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3223 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3231 /***************************************************************
3235 * No error = 0, else, the stage at which the error
3238 * io_base The IO port base address for the
3239 * TLAN device with the EEPROM to
3241 * ee_addr The address of the byte in the
3242 * EEPROM whose contents are to be
3244 * data An address to a char to hold the
3245 * data obtained from the EEPROM.
3247 * This function reads a byte of information from an byte
3248 * cell in the EEPROM.
3250 **************************************************************/
3252 static int tlan_ee_read_byte(struct net_device *dev, u8 ee_addr, u8 *data)
3255 struct tlan_priv *priv = netdev_priv(dev);
3256 unsigned long flags = 0;
3259 spin_lock_irqsave(&priv->lock, flags);
3261 tlan_ee_send_start(dev->base_addr);
3262 err = tlan_ee_send_byte(dev->base_addr, 0xa0, TLAN_EEPROM_ACK);
3267 err = tlan_ee_send_byte(dev->base_addr, ee_addr, TLAN_EEPROM_ACK);
3272 tlan_ee_send_start(dev->base_addr);
3273 err = tlan_ee_send_byte(dev->base_addr, 0xa1, TLAN_EEPROM_ACK);
3278 tlan_ee_receive_byte(dev->base_addr, data, TLAN_EEPROM_STOP);
3280 spin_unlock_irqrestore(&priv->lock, flags);