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");
73 * See Documentation/networking/device_drivers/ethernet/ti/tlan.rst for details
76 module_param(debug, int, 0);
77 MODULE_PARM_DESC(debug, "ThunderLAN debug mask");
79 static const char tlan_signature[] = "TLAN";
80 static const char tlan_banner[] = "ThunderLAN driver v1.17\n";
81 static int tlan_have_pci;
82 static int tlan_have_eisa;
84 static const char * const media[] = {
85 "10BaseT-HD", "10BaseT-FD", "100baseTx-HD",
86 "100BaseTx-FD", "100BaseT4", NULL
90 const char *device_label;
94 { "Compaq Netelligent 10 T PCI UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
95 { "Compaq Netelligent 10/100 TX PCI UTP",
96 TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
97 { "Compaq Integrated NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
98 { "Compaq NetFlex-3/P",
99 TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 },
100 { "Compaq NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
101 { "Compaq Netelligent Integrated 10/100 TX UTP",
102 TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
103 { "Compaq Netelligent Dual 10/100 TX PCI UTP",
104 TLAN_ADAPTER_NONE, 0x83 },
105 { "Compaq Netelligent 10/100 TX Embedded UTP",
106 TLAN_ADAPTER_NONE, 0x83 },
107 { "Olicom OC-2183/2185", TLAN_ADAPTER_USE_INTERN_10, 0x83 },
108 { "Olicom OC-2325", TLAN_ADAPTER_ACTIVITY_LED |
109 TLAN_ADAPTER_UNMANAGED_PHY, 0xf8 },
110 { "Olicom OC-2326", TLAN_ADAPTER_ACTIVITY_LED |
111 TLAN_ADAPTER_USE_INTERN_10, 0xf8 },
112 { "Compaq Netelligent 10/100 TX UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
113 { "Compaq Netelligent 10 T/2 PCI UTP/coax", TLAN_ADAPTER_NONE, 0x83 },
114 { "Compaq NetFlex-3/E",
115 TLAN_ADAPTER_ACTIVITY_LED | /* EISA card */
116 TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 },
117 { "Compaq NetFlex-3/E",
118 TLAN_ADAPTER_ACTIVITY_LED, 0x83 }, /* EISA card */
121 static const struct pci_device_id tlan_pci_tbl[] = {
122 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL10,
123 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
124 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100,
125 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 },
126 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3I,
127 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2 },
128 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_THUNDER,
129 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3 },
130 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3B,
131 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 },
132 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100PI,
133 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5 },
134 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100D,
135 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 6 },
136 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100I,
137 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 7 },
138 { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2183,
139 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 8 },
140 { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2325,
141 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 9 },
142 { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2326,
143 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 10 },
144 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_100_WS_5100,
145 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 11 },
146 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_T2,
147 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 12 },
150 MODULE_DEVICE_TABLE(pci, tlan_pci_tbl);
152 static void tlan_eisa_probe(void);
153 static void tlan_eisa_cleanup(void);
154 static int tlan_init(struct net_device *);
155 static int tlan_open(struct net_device *dev);
156 static netdev_tx_t tlan_start_tx(struct sk_buff *, struct net_device *);
157 static irqreturn_t tlan_handle_interrupt(int, void *);
158 static int tlan_close(struct net_device *);
159 static struct net_device_stats *tlan_get_stats(struct net_device *);
160 static void tlan_set_multicast_list(struct net_device *);
161 static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
162 static int tlan_probe1(struct pci_dev *pdev, long ioaddr,
163 int irq, int rev, const struct pci_device_id *ent);
164 static void tlan_tx_timeout(struct net_device *dev, unsigned int txqueue);
165 static void tlan_tx_timeout_work(struct work_struct *work);
166 static int tlan_init_one(struct pci_dev *pdev,
167 const struct pci_device_id *ent);
169 static u32 tlan_handle_tx_eof(struct net_device *, u16);
170 static u32 tlan_handle_stat_overflow(struct net_device *, u16);
171 static u32 tlan_handle_rx_eof(struct net_device *, u16);
172 static u32 tlan_handle_dummy(struct net_device *, u16);
173 static u32 tlan_handle_tx_eoc(struct net_device *, u16);
174 static u32 tlan_handle_status_check(struct net_device *, u16);
175 static u32 tlan_handle_rx_eoc(struct net_device *, u16);
177 static void tlan_timer(struct timer_list *t);
178 static void tlan_phy_monitor(struct timer_list *t);
180 static void tlan_reset_lists(struct net_device *);
181 static void tlan_free_lists(struct net_device *);
182 static void tlan_print_dio(u16);
183 static void tlan_print_list(struct tlan_list *, char *, int);
184 static void tlan_read_and_clear_stats(struct net_device *, int);
185 static void tlan_reset_adapter(struct net_device *);
186 static void tlan_finish_reset(struct net_device *);
187 static void tlan_set_mac(struct net_device *, int areg, char *mac);
189 static void tlan_phy_print(struct net_device *);
190 static void tlan_phy_detect(struct net_device *);
191 static void tlan_phy_power_down(struct net_device *);
192 static void tlan_phy_power_up(struct net_device *);
193 static void tlan_phy_reset(struct net_device *);
194 static void tlan_phy_start_link(struct net_device *);
195 static void tlan_phy_finish_auto_neg(struct net_device *);
198 static int tlan_phy_nop(struct net_device *);
199 static int tlan_phy_internal_check(struct net_device *);
200 static int tlan_phy_internal_service(struct net_device *);
201 static int tlan_phy_dp83840a_check(struct net_device *);
204 static bool tlan_mii_read_reg(struct net_device *, u16, u16, u16 *);
205 static void tlan_mii_send_data(u16, u32, unsigned);
206 static void tlan_mii_sync(u16);
207 static void tlan_mii_write_reg(struct net_device *, u16, u16, u16);
209 static void tlan_ee_send_start(u16);
210 static int tlan_ee_send_byte(u16, u8, int);
211 static void tlan_ee_receive_byte(u16, u8 *, int);
212 static int tlan_ee_read_byte(struct net_device *, u8, u8 *);
216 tlan_store_skb(struct tlan_list *tag, struct sk_buff *skb)
218 unsigned long addr = (unsigned long)skb;
219 tag->buffer[9].address = addr;
220 tag->buffer[8].address = upper_32_bits(addr);
223 static inline struct sk_buff *
224 tlan_get_skb(const struct tlan_list *tag)
228 addr = tag->buffer[9].address;
229 addr |= ((unsigned long) tag->buffer[8].address << 16) << 16;
230 return (struct sk_buff *) addr;
234 (*tlan_int_vector[TLAN_INT_NUMBER_OF_INTS])(struct net_device *, u16) = {
237 tlan_handle_stat_overflow,
241 tlan_handle_status_check,
246 tlan_set_timer(struct net_device *dev, u32 ticks, u32 type)
248 struct tlan_priv *priv = netdev_priv(dev);
249 unsigned long flags = 0;
252 spin_lock_irqsave(&priv->lock, flags);
253 if (priv->timer.function != NULL &&
254 priv->timer_type != TLAN_TIMER_ACTIVITY) {
256 spin_unlock_irqrestore(&priv->lock, flags);
259 priv->timer.function = tlan_timer;
261 spin_unlock_irqrestore(&priv->lock, flags);
263 priv->timer_set_at = jiffies;
264 priv->timer_type = type;
265 mod_timer(&priv->timer, jiffies + ticks);
270 /*****************************************************************************
271 ******************************************************************************
273 ThunderLAN driver primary functions
275 these functions are more or less common to all linux network drivers.
277 ******************************************************************************
278 *****************************************************************************/
284 /***************************************************************
292 * Goes through the TLanDevices list and frees the device
293 * structs and memory associated with each device (lists
294 * and buffers). It also ureserves the IO port regions
295 * associated with this device.
297 **************************************************************/
300 static void tlan_remove_one(struct pci_dev *pdev)
302 struct net_device *dev = pci_get_drvdata(pdev);
303 struct tlan_priv *priv = netdev_priv(dev);
305 unregister_netdev(dev);
307 if (priv->dma_storage) {
308 dma_free_coherent(&priv->pci_dev->dev, priv->dma_size,
309 priv->dma_storage, 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;
346 static int __maybe_unused tlan_suspend(struct device *dev_d)
348 struct net_device *dev = dev_get_drvdata(dev_d);
350 if (netif_running(dev))
353 netif_device_detach(dev);
358 static int __maybe_unused tlan_resume(struct device *dev_d)
360 struct net_device *dev = dev_get_drvdata(dev_d);
361 netif_device_attach(dev);
363 if (netif_running(dev))
369 static SIMPLE_DEV_PM_OPS(tlan_pm_ops, tlan_suspend, tlan_resume);
371 static struct pci_driver tlan_driver = {
373 .id_table = tlan_pci_tbl,
374 .probe = tlan_init_one,
375 .remove = tlan_remove_one,
376 .driver.pm = &tlan_pm_ops,
379 static int __init tlan_probe(void)
383 pr_info("%s", tlan_banner);
385 TLAN_DBG(TLAN_DEBUG_PROBE, "Starting PCI Probe....\n");
387 /* Use new style PCI probing. Now the kernel will
388 do most of this for us */
389 rc = pci_register_driver(&tlan_driver);
392 pr_err("Could not register pci driver\n");
393 goto err_out_pci_free;
396 TLAN_DBG(TLAN_DEBUG_PROBE, "Starting EISA Probe....\n");
399 pr_info("%d device%s installed, PCI: %d EISA: %d\n",
400 tlan_devices_installed, tlan_devices_installed == 1 ? "" : "s",
401 tlan_have_pci, tlan_have_eisa);
403 if (tlan_devices_installed == 0) {
405 goto err_out_pci_unreg;
410 pci_unregister_driver(&tlan_driver);
416 static int tlan_init_one(struct pci_dev *pdev,
417 const struct pci_device_id *ent)
419 return tlan_probe1(pdev, -1, -1, 0, ent);
424 ***************************************************************
428 * 0 on success, error code on error
432 * The name is lower case to fit in with all the rest of
433 * the netcard_probe names. This function looks for
434 * another TLan based adapter, setting it up with the
435 * allocated device struct if one is found.
436 * tlan_probe has been ported to the new net API and
437 * now allocates its own device structure. This function
438 * is also used by modules.
440 **************************************************************/
442 static int tlan_probe1(struct pci_dev *pdev, long ioaddr, int irq, int rev,
443 const struct pci_device_id *ent)
446 struct net_device *dev;
447 struct tlan_priv *priv;
449 int reg, rc = -ENODEV;
453 rc = pci_enable_device(pdev);
457 rc = pci_request_regions(pdev, tlan_signature);
459 pr_err("Could not reserve IO regions\n");
463 #endif /* CONFIG_PCI */
465 dev = alloc_etherdev(sizeof(struct tlan_priv));
468 goto err_out_regions;
470 SET_NETDEV_DEV(dev, &pdev->dev);
472 priv = netdev_priv(dev);
474 priv->pci_dev = pdev;
477 /* Is this a PCI device? */
481 priv->adapter = &board_info[ent->driver_data];
483 rc = dma_set_mask(&pdev->dev, DMA_BIT_MASK(32));
485 pr_err("No suitable PCI mapping available\n");
486 goto err_out_free_dev;
489 for (reg = 0; reg <= 5; reg++) {
490 if (pci_resource_flags(pdev, reg) & IORESOURCE_IO) {
491 pci_io_base = pci_resource_start(pdev, reg);
492 TLAN_DBG(TLAN_DEBUG_GNRL,
493 "IO mapping is available at %x.\n",
499 pr_err("No IO mappings available\n");
501 goto err_out_free_dev;
504 dev->base_addr = pci_io_base;
505 dev->irq = pdev->irq;
506 priv->adapter_rev = pdev->revision;
507 pci_set_master(pdev);
508 pci_set_drvdata(pdev, dev);
510 } else { /* EISA card */
511 /* This is a hack. We need to know which board structure
512 * is suited for this adapter */
513 device_id = inw(ioaddr + EISA_ID2);
514 if (device_id == 0x20F1) {
515 priv->adapter = &board_info[13]; /* NetFlex-3/E */
516 priv->adapter_rev = 23; /* TLAN 2.3 */
518 priv->adapter = &board_info[14];
519 priv->adapter_rev = 10; /* TLAN 1.0 */
521 dev->base_addr = ioaddr;
525 /* Kernel parameters */
526 if (dev->mem_start) {
527 priv->aui = dev->mem_start & 0x01;
528 priv->duplex = ((dev->mem_start & 0x06) == 0x06) ? 0
529 : (dev->mem_start & 0x06) >> 1;
530 priv->speed = ((dev->mem_start & 0x18) == 0x18) ? 0
531 : (dev->mem_start & 0x18) >> 3;
533 if (priv->speed == 0x1)
534 priv->speed = TLAN_SPEED_10;
535 else if (priv->speed == 0x2)
536 priv->speed = TLAN_SPEED_100;
538 debug = priv->debug = dev->mem_end;
540 priv->aui = aui[boards_found];
541 priv->speed = speed[boards_found];
542 priv->duplex = duplex[boards_found];
546 /* This will be used when we get an adapter error from
547 * within our irq handler */
548 INIT_WORK(&priv->tlan_tqueue, tlan_tx_timeout_work);
550 spin_lock_init(&priv->lock);
554 pr_err("Could not set up device\n");
555 goto err_out_free_dev;
558 rc = register_netdev(dev);
560 pr_err("Could not register device\n");
565 tlan_devices_installed++;
568 /* pdev is NULL if this is an EISA device */
572 priv->next_device = tlan_eisa_devices;
573 tlan_eisa_devices = dev;
577 netdev_info(dev, "irq=%2d, io=%04x, %s, Rev. %d\n",
580 priv->adapter->device_label,
585 dma_free_coherent(&priv->pci_dev->dev, priv->dma_size,
586 priv->dma_storage, priv->dma_storage_dma);
592 pci_release_regions(pdev);
596 pci_disable_device(pdev);
601 static void tlan_eisa_cleanup(void)
603 struct net_device *dev;
604 struct tlan_priv *priv;
606 while (tlan_have_eisa) {
607 dev = tlan_eisa_devices;
608 priv = netdev_priv(dev);
609 if (priv->dma_storage) {
610 dma_free_coherent(&priv->pci_dev->dev, priv->dma_size,
612 priv->dma_storage_dma);
614 release_region(dev->base_addr, 0x10);
615 unregister_netdev(dev);
616 tlan_eisa_devices = priv->next_device;
623 static void __exit tlan_exit(void)
625 pci_unregister_driver(&tlan_driver);
633 /* Module loading/unloading */
634 module_init(tlan_probe);
635 module_exit(tlan_exit);
639 /**************************************************************
642 * Returns: 0 on success, 1 otherwise
647 * This functions probes for EISA devices and calls
648 * TLan_probe1 when one is found.
650 *************************************************************/
652 static void __init tlan_eisa_probe(void)
659 TLAN_DBG(TLAN_DEBUG_PROBE, "No EISA bus present\n");
663 /* Loop through all slots of the EISA bus */
664 for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) {
666 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
667 (int) ioaddr + 0xc80, inw(ioaddr + EISA_ID));
668 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
669 (int) ioaddr + 0xc82, inw(ioaddr + EISA_ID2));
672 TLAN_DBG(TLAN_DEBUG_PROBE,
673 "Probing for EISA adapter at IO: 0x%4x : ",
675 if (request_region(ioaddr, 0x10, tlan_signature) == NULL)
678 if (inw(ioaddr + EISA_ID) != 0x110E) {
679 release_region(ioaddr, 0x10);
683 device_id = inw(ioaddr + EISA_ID2);
684 if (device_id != 0x20F1 && device_id != 0x40F1) {
685 release_region(ioaddr, 0x10);
689 /* check if adapter is enabled */
690 if (inb(ioaddr + EISA_CR) != 0x1) {
691 release_region(ioaddr, 0x10);
696 pr_info("Found one\n");
699 /* Get irq from board */
700 switch (inb(ioaddr + 0xcc0)) {
718 /* Setup the newly found eisa adapter */
719 tlan_probe1(NULL, ioaddr, irq, 12, NULL);
724 pr_info("None found\n");
729 pr_info("Card found but it is not enabled, skipping\n");
736 #ifdef CONFIG_NET_POLL_CONTROLLER
737 static void tlan_poll(struct net_device *dev)
739 disable_irq(dev->irq);
740 tlan_handle_interrupt(dev->irq, dev);
741 enable_irq(dev->irq);
745 static const struct net_device_ops tlan_netdev_ops = {
746 .ndo_open = tlan_open,
747 .ndo_stop = tlan_close,
748 .ndo_start_xmit = tlan_start_tx,
749 .ndo_tx_timeout = tlan_tx_timeout,
750 .ndo_get_stats = tlan_get_stats,
751 .ndo_set_rx_mode = tlan_set_multicast_list,
752 .ndo_do_ioctl = tlan_ioctl,
753 .ndo_set_mac_address = eth_mac_addr,
754 .ndo_validate_addr = eth_validate_addr,
755 #ifdef CONFIG_NET_POLL_CONTROLLER
756 .ndo_poll_controller = tlan_poll,
760 static void tlan_get_drvinfo(struct net_device *dev,
761 struct ethtool_drvinfo *info)
763 struct tlan_priv *priv = netdev_priv(dev);
765 strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
767 strlcpy(info->bus_info, pci_name(priv->pci_dev),
768 sizeof(info->bus_info));
770 strlcpy(info->bus_info, "EISA", sizeof(info->bus_info));
773 static int tlan_get_eeprom_len(struct net_device *dev)
775 return TLAN_EEPROM_SIZE;
778 static int tlan_get_eeprom(struct net_device *dev,
779 struct ethtool_eeprom *eeprom, u8 *data)
783 for (i = 0; i < TLAN_EEPROM_SIZE; i++)
784 if (tlan_ee_read_byte(dev, i, &data[i]))
790 static const struct ethtool_ops tlan_ethtool_ops = {
791 .get_drvinfo = tlan_get_drvinfo,
792 .get_link = ethtool_op_get_link,
793 .get_eeprom_len = tlan_get_eeprom_len,
794 .get_eeprom = tlan_get_eeprom,
797 /***************************************************************
801 * 0 on success, error code otherwise.
803 * dev The structure of the device to be
806 * This function completes the initialization of the
807 * device structure and driver. It reserves the IO
808 * addresses, allocates memory for the lists and bounce
809 * buffers, retrieves the MAC address from the eeprom
810 * and assignes the device's methods.
812 **************************************************************/
814 static int tlan_init(struct net_device *dev)
819 struct tlan_priv *priv;
821 priv = netdev_priv(dev);
823 dma_size = (TLAN_NUM_RX_LISTS + TLAN_NUM_TX_LISTS)
824 * (sizeof(struct tlan_list));
825 priv->dma_storage = dma_alloc_coherent(&priv->pci_dev->dev, dma_size,
826 &priv->dma_storage_dma, GFP_KERNEL);
827 priv->dma_size = dma_size;
829 if (priv->dma_storage == NULL) {
830 pr_err("Could not allocate lists and buffers for %s\n",
834 priv->rx_list = (struct tlan_list *)
835 ALIGN((unsigned long)priv->dma_storage, 8);
836 priv->rx_list_dma = ALIGN(priv->dma_storage_dma, 8);
837 priv->tx_list = priv->rx_list + TLAN_NUM_RX_LISTS;
839 priv->rx_list_dma + sizeof(struct tlan_list)*TLAN_NUM_RX_LISTS;
842 for (i = 0; i < ETH_ALEN; i++)
843 err |= tlan_ee_read_byte(dev,
844 (u8) priv->adapter->addr_ofs + i,
845 (u8 *) &dev->dev_addr[i]);
847 pr_err("%s: Error reading MAC from eeprom: %d\n",
850 /* Olicom OC-2325/OC-2326 have the address byte-swapped */
851 if (priv->adapter->addr_ofs == 0xf8) {
852 for (i = 0; i < ETH_ALEN; i += 2) {
853 char tmp = dev->dev_addr[i];
854 dev->dev_addr[i] = dev->dev_addr[i + 1];
855 dev->dev_addr[i + 1] = tmp;
859 netif_carrier_off(dev);
862 dev->netdev_ops = &tlan_netdev_ops;
863 dev->ethtool_ops = &tlan_ethtool_ops;
864 dev->watchdog_timeo = TX_TIMEOUT;
873 /***************************************************************
877 * 0 on success, error code otherwise.
879 * dev Structure of device to be opened.
881 * This routine puts the driver and TLAN adapter in a
882 * state where it is ready to send and receive packets.
883 * It allocates the IRQ, resets and brings the adapter
884 * out of reset, and allows interrupts. It also delays
885 * the startup for autonegotiation or sends a Rx GO
886 * command to the adapter, as appropriate.
888 **************************************************************/
890 static int tlan_open(struct net_device *dev)
892 struct tlan_priv *priv = netdev_priv(dev);
895 priv->tlan_rev = tlan_dio_read8(dev->base_addr, TLAN_DEF_REVISION);
896 err = request_irq(dev->irq, tlan_handle_interrupt, IRQF_SHARED,
900 netdev_err(dev, "Cannot open because IRQ %d is already in use\n",
905 timer_setup(&priv->timer, NULL, 0);
906 timer_setup(&priv->media_timer, tlan_phy_monitor, 0);
910 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Opened. TLAN Chip Rev: %x\n",
911 dev->name, priv->tlan_rev);
919 /**************************************************************
923 * 0 on success, error code otherwise
925 * dev structure of device to receive ioctl.
927 * rq ifreq structure to hold userspace data.
932 *************************************************************/
934 static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
936 struct tlan_priv *priv = netdev_priv(dev);
937 struct mii_ioctl_data *data = if_mii(rq);
938 u32 phy = priv->phy[priv->phy_num];
940 if (!priv->phy_online)
944 case SIOCGMIIPHY: /* get address of MII PHY in use. */
949 case SIOCGMIIREG: /* read MII PHY register. */
950 tlan_mii_read_reg(dev, data->phy_id & 0x1f,
951 data->reg_num & 0x1f, &data->val_out);
955 case SIOCSMIIREG: /* write MII PHY register. */
956 tlan_mii_write_reg(dev, data->phy_id & 0x1f,
957 data->reg_num & 0x1f, data->val_in);
965 /***************************************************************
971 * dev structure of device which timed out
974 **************************************************************/
976 static void tlan_tx_timeout(struct net_device *dev, unsigned int txqueue)
979 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Transmit timed out.\n", dev->name);
981 /* Ok so we timed out, lets see what we can do about it...*/
982 tlan_free_lists(dev);
983 tlan_reset_lists(dev);
984 tlan_read_and_clear_stats(dev, TLAN_IGNORE);
985 tlan_reset_adapter(dev);
986 netif_trans_update(dev); /* prevent tx timeout */
987 netif_wake_queue(dev);
992 /***************************************************************
993 * tlan_tx_timeout_work
998 * work work item of device which timed out
1000 **************************************************************/
1002 static void tlan_tx_timeout_work(struct work_struct *work)
1004 struct tlan_priv *priv =
1005 container_of(work, struct tlan_priv, tlan_tqueue);
1007 tlan_tx_timeout(priv->dev, UINT_MAX);
1012 /***************************************************************
1016 * 0 on success, non-zero on failure.
1018 * skb A pointer to the sk_buff containing the
1020 * dev The device to send the data on.
1022 * This function adds a frame to the Tx list to be sent
1023 * ASAP. First it verifies that the adapter is ready and
1024 * there is room in the queue. Then it sets up the next
1025 * available list, copies the frame to the corresponding
1026 * buffer. If the adapter Tx channel is idle, it gives
1027 * the adapter a Tx Go command on the list, otherwise it
1028 * sets the forward address of the previous list to point
1029 * to this one. Then it frees the sk_buff.
1031 **************************************************************/
1033 static netdev_tx_t tlan_start_tx(struct sk_buff *skb, struct net_device *dev)
1035 struct tlan_priv *priv = netdev_priv(dev);
1036 dma_addr_t tail_list_phys;
1037 struct tlan_list *tail_list;
1038 unsigned long flags;
1041 if (!priv->phy_online) {
1042 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s PHY is not ready\n",
1044 dev_kfree_skb_any(skb);
1045 return NETDEV_TX_OK;
1048 if (skb_padto(skb, TLAN_MIN_FRAME_SIZE))
1049 return NETDEV_TX_OK;
1050 txlen = max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE);
1052 tail_list = priv->tx_list + priv->tx_tail;
1054 priv->tx_list_dma + sizeof(struct tlan_list)*priv->tx_tail;
1056 if (tail_list->c_stat != TLAN_CSTAT_UNUSED) {
1057 TLAN_DBG(TLAN_DEBUG_TX,
1058 "TRANSMIT: %s is busy (Head=%d Tail=%d)\n",
1059 dev->name, priv->tx_head, priv->tx_tail);
1060 netif_stop_queue(dev);
1061 priv->tx_busy_count++;
1062 return NETDEV_TX_BUSY;
1065 tail_list->forward = 0;
1067 tail_list->buffer[0].address = dma_map_single(&priv->pci_dev->dev,
1070 tlan_store_skb(tail_list, skb);
1072 tail_list->frame_size = (u16) txlen;
1073 tail_list->buffer[0].count = TLAN_LAST_BUFFER | (u32) txlen;
1074 tail_list->buffer[1].count = 0;
1075 tail_list->buffer[1].address = 0;
1077 spin_lock_irqsave(&priv->lock, flags);
1078 tail_list->c_stat = TLAN_CSTAT_READY;
1079 if (!priv->tx_in_progress) {
1080 priv->tx_in_progress = 1;
1081 TLAN_DBG(TLAN_DEBUG_TX,
1082 "TRANSMIT: Starting TX on buffer %d\n",
1084 outl(tail_list_phys, dev->base_addr + TLAN_CH_PARM);
1085 outl(TLAN_HC_GO, dev->base_addr + TLAN_HOST_CMD);
1087 TLAN_DBG(TLAN_DEBUG_TX,
1088 "TRANSMIT: Adding buffer %d to TX channel\n",
1090 if (priv->tx_tail == 0) {
1091 (priv->tx_list + (TLAN_NUM_TX_LISTS - 1))->forward
1094 (priv->tx_list + (priv->tx_tail - 1))->forward
1098 spin_unlock_irqrestore(&priv->lock, flags);
1100 CIRC_INC(priv->tx_tail, TLAN_NUM_TX_LISTS);
1102 return NETDEV_TX_OK;
1109 /***************************************************************
1110 * tlan_handle_interrupt
1115 * irq The line on which the interrupt
1117 * dev_id A pointer to the device assigned to
1120 * This function handles an interrupt generated by its
1121 * assigned TLAN adapter. The function deactivates
1122 * interrupts on its adapter, records the type of
1123 * interrupt, executes the appropriate subhandler, and
1124 * acknowdges the interrupt to the adapter (thus
1125 * re-enabling adapter interrupts.
1127 **************************************************************/
1129 static irqreturn_t tlan_handle_interrupt(int irq, void *dev_id)
1131 struct net_device *dev = dev_id;
1132 struct tlan_priv *priv = netdev_priv(dev);
1136 spin_lock(&priv->lock);
1138 host_int = inw(dev->base_addr + TLAN_HOST_INT);
1139 type = (host_int & TLAN_HI_IT_MASK) >> 2;
1144 outw(host_int, dev->base_addr + TLAN_HOST_INT);
1145 ack = tlan_int_vector[type](dev, host_int);
1148 host_cmd = TLAN_HC_ACK | ack | (type << 18);
1149 outl(host_cmd, dev->base_addr + TLAN_HOST_CMD);
1153 spin_unlock(&priv->lock);
1155 return IRQ_RETVAL(type);
1161 /***************************************************************
1167 * dev The device structure of the device to
1170 * This function shuts down the adapter. It records any
1171 * stats, puts the adapter into reset state, deactivates
1172 * its time as needed, and frees the irq it is using.
1174 **************************************************************/
1176 static int tlan_close(struct net_device *dev)
1180 free_irq(dev->irq, dev);
1181 tlan_free_lists(dev);
1182 TLAN_DBG(TLAN_DEBUG_GNRL, "Device %s closed.\n", dev->name);
1191 /***************************************************************
1195 * A pointer to the device's statistics structure.
1197 * dev The device structure to return the
1200 * This function updates the devices statistics by reading
1201 * the TLAN chip's onboard registers. Then it returns the
1202 * address of the statistics structure.
1204 **************************************************************/
1206 static struct net_device_stats *tlan_get_stats(struct net_device *dev)
1208 struct tlan_priv *priv = netdev_priv(dev);
1211 /* Should only read stats if open ? */
1212 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1214 TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: %s EOC count = %d\n", dev->name,
1215 priv->rx_eoc_count);
1216 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s Busy count = %d\n", dev->name,
1217 priv->tx_busy_count);
1218 if (debug & TLAN_DEBUG_GNRL) {
1219 tlan_print_dio(dev->base_addr);
1220 tlan_phy_print(dev);
1222 if (debug & TLAN_DEBUG_LIST) {
1223 for (i = 0; i < TLAN_NUM_RX_LISTS; i++)
1224 tlan_print_list(priv->rx_list + i, "RX", i);
1225 for (i = 0; i < TLAN_NUM_TX_LISTS; i++)
1226 tlan_print_list(priv->tx_list + i, "TX", i);
1236 /***************************************************************
1237 * tlan_set_multicast_list
1242 * dev The device structure to set the
1243 * multicast list for.
1245 * This function sets the TLAN adaptor to various receive
1246 * modes. If the IFF_PROMISC flag is set, promiscuous
1247 * mode is acitviated. Otherwise, promiscuous mode is
1248 * turned off. If the IFF_ALLMULTI flag is set, then
1249 * the hash table is set to receive all group addresses.
1250 * Otherwise, the first three multicast addresses are
1251 * stored in AREG_1-3, and the rest are selected via the
1252 * hash table, as necessary.
1254 **************************************************************/
1256 static void tlan_set_multicast_list(struct net_device *dev)
1258 struct netdev_hw_addr *ha;
1265 if (dev->flags & IFF_PROMISC) {
1266 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1267 tlan_dio_write8(dev->base_addr,
1268 TLAN_NET_CMD, tmp | TLAN_NET_CMD_CAF);
1270 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1271 tlan_dio_write8(dev->base_addr,
1272 TLAN_NET_CMD, tmp & ~TLAN_NET_CMD_CAF);
1273 if (dev->flags & IFF_ALLMULTI) {
1274 for (i = 0; i < 3; i++)
1275 tlan_set_mac(dev, i + 1, NULL);
1276 tlan_dio_write32(dev->base_addr, TLAN_HASH_1,
1278 tlan_dio_write32(dev->base_addr, TLAN_HASH_2,
1282 netdev_for_each_mc_addr(ha, dev) {
1284 tlan_set_mac(dev, i + 1,
1285 (char *) &ha->addr);
1288 tlan_hash_func((u8 *)&ha->addr);
1290 hash1 |= (1 << offset);
1292 hash2 |= (1 << (offset - 32));
1297 tlan_set_mac(dev, i + 1, NULL);
1298 tlan_dio_write32(dev->base_addr, TLAN_HASH_1, hash1);
1299 tlan_dio_write32(dev->base_addr, TLAN_HASH_2, hash2);
1307 /*****************************************************************************
1308 ******************************************************************************
1310 ThunderLAN driver interrupt vectors and table
1312 please see chap. 4, "Interrupt Handling" of the "ThunderLAN
1313 Programmer's Guide" for more informations on handling interrupts
1314 generated by TLAN based adapters.
1316 ******************************************************************************
1317 *****************************************************************************/
1322 /***************************************************************
1323 * tlan_handle_tx_eof
1328 * dev Device assigned the IRQ that was
1330 * host_int The contents of the HOST_INT
1333 * This function handles Tx EOF interrupts which are raised
1334 * by the adapter when it has completed sending the
1335 * contents of a buffer. If detemines which list/buffer
1336 * was completed and resets it. If the buffer was the last
1337 * in the channel (EOC), then the function checks to see if
1338 * another buffer is ready to send, and if so, sends a Tx
1339 * Go command. Finally, the driver activates/continues the
1342 **************************************************************/
1344 static u32 tlan_handle_tx_eof(struct net_device *dev, u16 host_int)
1346 struct tlan_priv *priv = netdev_priv(dev);
1348 struct tlan_list *head_list;
1349 dma_addr_t head_list_phys;
1353 TLAN_DBG(TLAN_DEBUG_TX,
1354 "TRANSMIT: Handling TX EOF (Head=%d Tail=%d)\n",
1355 priv->tx_head, priv->tx_tail);
1356 head_list = priv->tx_list + priv->tx_head;
1358 while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1360 struct sk_buff *skb = tlan_get_skb(head_list);
1363 dma_unmap_single(&priv->pci_dev->dev,
1364 head_list->buffer[0].address,
1365 max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE),
1367 dev_kfree_skb_any(skb);
1368 head_list->buffer[8].address = 0;
1369 head_list->buffer[9].address = 0;
1371 if (tmp_c_stat & TLAN_CSTAT_EOC)
1374 dev->stats.tx_bytes += head_list->frame_size;
1376 head_list->c_stat = TLAN_CSTAT_UNUSED;
1377 netif_start_queue(dev);
1378 CIRC_INC(priv->tx_head, TLAN_NUM_TX_LISTS);
1379 head_list = priv->tx_list + priv->tx_head;
1384 "Received interrupt for uncompleted TX frame\n");
1387 TLAN_DBG(TLAN_DEBUG_TX,
1388 "TRANSMIT: handling TX EOC (Head=%d Tail=%d)\n",
1389 priv->tx_head, priv->tx_tail);
1390 head_list = priv->tx_list + priv->tx_head;
1391 head_list_phys = priv->tx_list_dma
1392 + sizeof(struct tlan_list)*priv->tx_head;
1393 if ((head_list->c_stat & TLAN_CSTAT_READY)
1394 == TLAN_CSTAT_READY) {
1395 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1398 priv->tx_in_progress = 0;
1402 if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1403 tlan_dio_write8(dev->base_addr,
1404 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1405 if (priv->timer.function == NULL) {
1406 priv->timer.function = tlan_timer;
1407 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1408 priv->timer_set_at = jiffies;
1409 priv->timer_type = TLAN_TIMER_ACTIVITY;
1410 add_timer(&priv->timer);
1411 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1412 priv->timer_set_at = jiffies;
1423 /***************************************************************
1424 * TLan_HandleStatOverflow
1429 * dev Device assigned the IRQ that was
1431 * host_int The contents of the HOST_INT
1434 * This function handles the Statistics Overflow interrupt
1435 * which means that one or more of the TLAN statistics
1436 * registers has reached 1/2 capacity and needs to be read.
1438 **************************************************************/
1440 static u32 tlan_handle_stat_overflow(struct net_device *dev, u16 host_int)
1442 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1451 /***************************************************************
1457 * dev Device assigned the IRQ that was
1459 * host_int The contents of the HOST_INT
1462 * This function handles the Rx EOF interrupt which
1463 * indicates a frame has been received by the adapter from
1464 * the net and the frame has been transferred to memory.
1465 * The function determines the bounce buffer the frame has
1466 * been loaded into, creates a new sk_buff big enough to
1467 * hold the frame, and sends it to protocol stack. It
1468 * then resets the used buffer and appends it to the end
1469 * of the list. If the frame was the last in the Rx
1470 * channel (EOC), the function restarts the receive channel
1471 * by sending an Rx Go command to the adapter. Then it
1472 * activates/continues the activity LED.
1474 **************************************************************/
1476 static u32 tlan_handle_rx_eof(struct net_device *dev, u16 host_int)
1478 struct tlan_priv *priv = netdev_priv(dev);
1481 struct tlan_list *head_list;
1482 struct sk_buff *skb;
1483 struct tlan_list *tail_list;
1485 dma_addr_t head_list_phys;
1487 TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: handling RX EOF (Head=%d Tail=%d)\n",
1488 priv->rx_head, priv->rx_tail);
1489 head_list = priv->rx_list + priv->rx_head;
1491 priv->rx_list_dma + sizeof(struct tlan_list)*priv->rx_head;
1493 while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1495 dma_addr_t frame_dma = head_list->buffer[0].address;
1496 u32 frame_size = head_list->frame_size;
1497 struct sk_buff *new_skb;
1500 if (tmp_c_stat & TLAN_CSTAT_EOC)
1503 new_skb = netdev_alloc_skb_ip_align(dev,
1504 TLAN_MAX_FRAME_SIZE + 5);
1506 goto drop_and_reuse;
1508 skb = tlan_get_skb(head_list);
1509 dma_unmap_single(&priv->pci_dev->dev, frame_dma,
1510 TLAN_MAX_FRAME_SIZE, DMA_FROM_DEVICE);
1511 skb_put(skb, frame_size);
1513 dev->stats.rx_bytes += frame_size;
1515 skb->protocol = eth_type_trans(skb, dev);
1518 head_list->buffer[0].address =
1519 dma_map_single(&priv->pci_dev->dev, new_skb->data,
1520 TLAN_MAX_FRAME_SIZE, DMA_FROM_DEVICE);
1522 tlan_store_skb(head_list, new_skb);
1524 head_list->forward = 0;
1525 head_list->c_stat = 0;
1526 tail_list = priv->rx_list + priv->rx_tail;
1527 tail_list->forward = head_list_phys;
1529 CIRC_INC(priv->rx_head, TLAN_NUM_RX_LISTS);
1530 CIRC_INC(priv->rx_tail, TLAN_NUM_RX_LISTS);
1531 head_list = priv->rx_list + priv->rx_head;
1532 head_list_phys = priv->rx_list_dma
1533 + sizeof(struct tlan_list)*priv->rx_head;
1538 "Received interrupt for uncompleted RX frame\n");
1542 TLAN_DBG(TLAN_DEBUG_RX,
1543 "RECEIVE: handling RX EOC (Head=%d Tail=%d)\n",
1544 priv->rx_head, priv->rx_tail);
1545 head_list = priv->rx_list + priv->rx_head;
1546 head_list_phys = priv->rx_list_dma
1547 + sizeof(struct tlan_list)*priv->rx_head;
1548 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1549 ack |= TLAN_HC_GO | TLAN_HC_RT;
1550 priv->rx_eoc_count++;
1553 if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1554 tlan_dio_write8(dev->base_addr,
1555 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1556 if (priv->timer.function == NULL) {
1557 priv->timer.function = tlan_timer;
1558 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1559 priv->timer_set_at = jiffies;
1560 priv->timer_type = TLAN_TIMER_ACTIVITY;
1561 add_timer(&priv->timer);
1562 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1563 priv->timer_set_at = jiffies;
1574 /***************************************************************
1580 * dev Device assigned the IRQ that was
1582 * host_int The contents of the HOST_INT
1585 * This function handles the Dummy interrupt, which is
1586 * raised whenever a test interrupt is generated by setting
1587 * the Req_Int bit of HOST_CMD to 1.
1589 **************************************************************/
1591 static u32 tlan_handle_dummy(struct net_device *dev, u16 host_int)
1593 netdev_info(dev, "Test interrupt\n");
1601 /***************************************************************
1602 * tlan_handle_tx_eoc
1607 * dev Device assigned the IRQ that was
1609 * host_int The contents of the HOST_INT
1612 * This driver is structured to determine EOC occurrences by
1613 * reading the CSTAT member of the list structure. Tx EOC
1614 * interrupts are disabled via the DIO INTDIS register.
1615 * However, TLAN chips before revision 3.0 didn't have this
1616 * functionality, so process EOC events if this is the
1619 **************************************************************/
1621 static u32 tlan_handle_tx_eoc(struct net_device *dev, u16 host_int)
1623 struct tlan_priv *priv = netdev_priv(dev);
1624 struct tlan_list *head_list;
1625 dma_addr_t head_list_phys;
1628 if (priv->tlan_rev < 0x30) {
1629 TLAN_DBG(TLAN_DEBUG_TX,
1630 "TRANSMIT: handling TX EOC (Head=%d Tail=%d) -- IRQ\n",
1631 priv->tx_head, priv->tx_tail);
1632 head_list = priv->tx_list + priv->tx_head;
1633 head_list_phys = priv->tx_list_dma
1634 + sizeof(struct tlan_list)*priv->tx_head;
1635 if ((head_list->c_stat & TLAN_CSTAT_READY)
1636 == TLAN_CSTAT_READY) {
1637 netif_stop_queue(dev);
1638 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1641 priv->tx_in_progress = 0;
1652 /***************************************************************
1653 * tlan_handle_status_check
1656 * 0 if Adapter check, 1 if Network Status check.
1658 * dev Device assigned the IRQ that was
1660 * host_int The contents of the HOST_INT
1663 * This function handles Adapter Check/Network Status
1664 * interrupts generated by the adapter. It checks the
1665 * vector in the HOST_INT register to determine if it is
1666 * an Adapter Check interrupt. If so, it resets the
1667 * adapter. Otherwise it clears the status registers
1668 * and services the PHY.
1670 **************************************************************/
1672 static u32 tlan_handle_status_check(struct net_device *dev, u16 host_int)
1674 struct tlan_priv *priv = netdev_priv(dev);
1683 if (host_int & TLAN_HI_IV_MASK) {
1684 netif_stop_queue(dev);
1685 error = inl(dev->base_addr + TLAN_CH_PARM);
1686 netdev_info(dev, "Adaptor Error = 0x%x\n", error);
1687 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1688 outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
1690 schedule_work(&priv->tlan_tqueue);
1692 netif_wake_queue(dev);
1695 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Status Check\n", dev->name);
1696 phy = priv->phy[priv->phy_num];
1698 net_sts = tlan_dio_read8(dev->base_addr, TLAN_NET_STS);
1700 tlan_dio_write8(dev->base_addr, TLAN_NET_STS, net_sts);
1701 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Net_Sts = %x\n",
1702 dev->name, (unsigned) net_sts);
1704 if ((net_sts & TLAN_NET_STS_MIRQ) && (priv->phy_num == 0)) {
1705 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_STS, &tlphy_sts);
1706 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
1707 if (!(tlphy_sts & TLAN_TS_POLOK) &&
1708 !(tlphy_ctl & TLAN_TC_SWAPOL)) {
1709 tlphy_ctl |= TLAN_TC_SWAPOL;
1710 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1712 } else if ((tlphy_sts & TLAN_TS_POLOK) &&
1713 (tlphy_ctl & TLAN_TC_SWAPOL)) {
1714 tlphy_ctl &= ~TLAN_TC_SWAPOL;
1715 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1720 tlan_phy_print(dev);
1731 /***************************************************************
1732 * tlan_handle_rx_eoc
1737 * dev Device assigned the IRQ that was
1739 * host_int The contents of the HOST_INT
1742 * This driver is structured to determine EOC occurrences by
1743 * reading the CSTAT member of the list structure. Rx EOC
1744 * interrupts are disabled via the DIO INTDIS register.
1745 * However, TLAN chips before revision 3.0 didn't have this
1746 * CSTAT member or a INTDIS register, so if this chip is
1747 * pre-3.0, process EOC interrupts normally.
1749 **************************************************************/
1751 static u32 tlan_handle_rx_eoc(struct net_device *dev, u16 host_int)
1753 struct tlan_priv *priv = netdev_priv(dev);
1754 dma_addr_t head_list_phys;
1757 if (priv->tlan_rev < 0x30) {
1758 TLAN_DBG(TLAN_DEBUG_RX,
1759 "RECEIVE: Handling RX EOC (head=%d tail=%d) -- IRQ\n",
1760 priv->rx_head, priv->rx_tail);
1761 head_list_phys = priv->rx_list_dma
1762 + sizeof(struct tlan_list)*priv->rx_head;
1763 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1764 ack |= TLAN_HC_GO | TLAN_HC_RT;
1765 priv->rx_eoc_count++;
1775 /*****************************************************************************
1776 ******************************************************************************
1778 ThunderLAN driver timer function
1780 ******************************************************************************
1781 *****************************************************************************/
1784 /***************************************************************
1790 * data A value given to add timer when
1791 * add_timer was called.
1793 * This function handles timed functionality for the
1794 * TLAN driver. The two current timer uses are for
1795 * delaying for autonegotionation and driving the ACT LED.
1796 * - Autonegotiation requires being allowed about
1797 * 2 1/2 seconds before attempting to transmit a
1798 * packet. It would be a very bad thing to hang
1799 * the kernel this long, so the driver doesn't
1800 * allow transmission 'til after this time, for
1801 * certain PHYs. It would be much nicer if all
1802 * PHYs were interrupt-capable like the internal
1804 * - The ACT LED, which shows adapter activity, is
1805 * driven by the driver, and so must be left on
1806 * for a short period to power up the LED so it
1807 * can be seen. This delay can be changed by
1808 * changing the TLAN_TIMER_ACT_DELAY in tlan.h,
1809 * if desired. 100 ms produces a slightly
1810 * sluggish response.
1812 **************************************************************/
1814 static void tlan_timer(struct timer_list *t)
1816 struct tlan_priv *priv = from_timer(priv, t, timer);
1817 struct net_device *dev = priv->dev;
1819 unsigned long flags = 0;
1821 priv->timer.function = NULL;
1823 switch (priv->timer_type) {
1824 case TLAN_TIMER_PHY_PDOWN:
1825 tlan_phy_power_down(dev);
1827 case TLAN_TIMER_PHY_PUP:
1828 tlan_phy_power_up(dev);
1830 case TLAN_TIMER_PHY_RESET:
1831 tlan_phy_reset(dev);
1833 case TLAN_TIMER_PHY_START_LINK:
1834 tlan_phy_start_link(dev);
1836 case TLAN_TIMER_PHY_FINISH_AN:
1837 tlan_phy_finish_auto_neg(dev);
1839 case TLAN_TIMER_FINISH_RESET:
1840 tlan_finish_reset(dev);
1842 case TLAN_TIMER_ACTIVITY:
1843 spin_lock_irqsave(&priv->lock, flags);
1844 if (priv->timer.function == NULL) {
1845 elapsed = jiffies - priv->timer_set_at;
1846 if (elapsed >= TLAN_TIMER_ACT_DELAY) {
1847 tlan_dio_write8(dev->base_addr,
1848 TLAN_LED_REG, TLAN_LED_LINK);
1850 priv->timer.expires = priv->timer_set_at
1851 + TLAN_TIMER_ACT_DELAY;
1852 spin_unlock_irqrestore(&priv->lock, flags);
1853 add_timer(&priv->timer);
1857 spin_unlock_irqrestore(&priv->lock, flags);
1866 /*****************************************************************************
1867 ******************************************************************************
1869 ThunderLAN driver adapter related routines
1871 ******************************************************************************
1872 *****************************************************************************/
1875 /***************************************************************
1881 * dev The device structure with the list
1882 * structures to be reset.
1884 * This routine sets the variables associated with managing
1885 * the TLAN lists to their initial values.
1887 **************************************************************/
1889 static void tlan_reset_lists(struct net_device *dev)
1891 struct tlan_priv *priv = netdev_priv(dev);
1893 struct tlan_list *list;
1894 dma_addr_t list_phys;
1895 struct sk_buff *skb;
1899 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1900 list = priv->tx_list + i;
1901 list->c_stat = TLAN_CSTAT_UNUSED;
1902 list->buffer[0].address = 0;
1903 list->buffer[2].count = 0;
1904 list->buffer[2].address = 0;
1905 list->buffer[8].address = 0;
1906 list->buffer[9].address = 0;
1910 priv->rx_tail = TLAN_NUM_RX_LISTS - 1;
1911 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1912 list = priv->rx_list + i;
1913 list_phys = priv->rx_list_dma + sizeof(struct tlan_list)*i;
1914 list->c_stat = TLAN_CSTAT_READY;
1915 list->frame_size = TLAN_MAX_FRAME_SIZE;
1916 list->buffer[0].count = TLAN_MAX_FRAME_SIZE | TLAN_LAST_BUFFER;
1917 skb = netdev_alloc_skb_ip_align(dev, TLAN_MAX_FRAME_SIZE + 5);
1921 list->buffer[0].address = dma_map_single(&priv->pci_dev->dev,
1923 TLAN_MAX_FRAME_SIZE,
1925 tlan_store_skb(list, skb);
1926 list->buffer[1].count = 0;
1927 list->buffer[1].address = 0;
1928 list->forward = list_phys + sizeof(struct tlan_list);
1931 /* in case ran out of memory early, clear bits */
1932 while (i < TLAN_NUM_RX_LISTS) {
1933 tlan_store_skb(priv->rx_list + i, NULL);
1941 static void tlan_free_lists(struct net_device *dev)
1943 struct tlan_priv *priv = netdev_priv(dev);
1945 struct tlan_list *list;
1946 struct sk_buff *skb;
1948 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1949 list = priv->tx_list + i;
1950 skb = tlan_get_skb(list);
1952 dma_unmap_single(&priv->pci_dev->dev,
1953 list->buffer[0].address,
1954 max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE),
1956 dev_kfree_skb_any(skb);
1957 list->buffer[8].address = 0;
1958 list->buffer[9].address = 0;
1962 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1963 list = priv->rx_list + i;
1964 skb = tlan_get_skb(list);
1966 dma_unmap_single(&priv->pci_dev->dev,
1967 list->buffer[0].address,
1968 TLAN_MAX_FRAME_SIZE, DMA_FROM_DEVICE);
1969 dev_kfree_skb_any(skb);
1970 list->buffer[8].address = 0;
1971 list->buffer[9].address = 0;
1979 /***************************************************************
1985 * io_base Base IO port of the device of
1986 * which to print DIO registers.
1988 * This function prints out all the internal (DIO)
1989 * registers of a TLAN chip.
1991 **************************************************************/
1993 static void tlan_print_dio(u16 io_base)
1998 pr_info("Contents of internal registers for io base 0x%04hx\n",
2000 pr_info("Off. +0 +4\n");
2001 for (i = 0; i < 0x4C; i += 8) {
2002 data0 = tlan_dio_read32(io_base, i);
2003 data1 = tlan_dio_read32(io_base, i + 0x4);
2004 pr_info("0x%02x 0x%08x 0x%08x\n", i, data0, data1);
2012 /***************************************************************
2018 * list A pointer to the struct tlan_list structure to
2020 * type A string to designate type of list,
2022 * num The index of the list.
2024 * This function prints out the contents of the list
2025 * pointed to by the list parameter.
2027 **************************************************************/
2029 static void tlan_print_list(struct tlan_list *list, char *type, int num)
2033 pr_info("%s List %d at %p\n", type, num, list);
2034 pr_info(" Forward = 0x%08x\n", list->forward);
2035 pr_info(" CSTAT = 0x%04hx\n", list->c_stat);
2036 pr_info(" Frame Size = 0x%04hx\n", list->frame_size);
2037 /* for (i = 0; i < 10; i++) { */
2038 for (i = 0; i < 2; i++) {
2039 pr_info(" Buffer[%d].count, addr = 0x%08x, 0x%08x\n",
2040 i, list->buffer[i].count, list->buffer[i].address);
2048 /***************************************************************
2049 * tlan_read_and_clear_stats
2054 * dev Pointer to device structure of adapter
2055 * to which to read stats.
2056 * record Flag indicating whether to add
2058 * This functions reads all the internal status registers
2059 * of the TLAN chip, which clears them as a side effect.
2060 * It then either adds the values to the device's status
2061 * struct, or discards them, depending on whether record
2062 * is TLAN_RECORD (!=0) or TLAN_IGNORE (==0).
2064 **************************************************************/
2066 static void tlan_read_and_clear_stats(struct net_device *dev, int record)
2068 u32 tx_good, tx_under;
2069 u32 rx_good, rx_over;
2070 u32 def_tx, crc, code;
2071 u32 multi_col, single_col;
2072 u32 excess_col, late_col, loss;
2074 outw(TLAN_GOOD_TX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2075 tx_good = inb(dev->base_addr + TLAN_DIO_DATA);
2076 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2077 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2078 tx_under = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2080 outw(TLAN_GOOD_RX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2081 rx_good = inb(dev->base_addr + TLAN_DIO_DATA);
2082 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2083 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2084 rx_over = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2086 outw(TLAN_DEFERRED_TX, dev->base_addr + TLAN_DIO_ADR);
2087 def_tx = inb(dev->base_addr + TLAN_DIO_DATA);
2088 def_tx += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2089 crc = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2090 code = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2092 outw(TLAN_MULTICOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2093 multi_col = inb(dev->base_addr + TLAN_DIO_DATA);
2094 multi_col += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2095 single_col = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2096 single_col += inb(dev->base_addr + TLAN_DIO_DATA + 3) << 8;
2098 outw(TLAN_EXCESSCOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2099 excess_col = inb(dev->base_addr + TLAN_DIO_DATA);
2100 late_col = inb(dev->base_addr + TLAN_DIO_DATA + 1);
2101 loss = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2104 dev->stats.rx_packets += rx_good;
2105 dev->stats.rx_errors += rx_over + crc + code;
2106 dev->stats.tx_packets += tx_good;
2107 dev->stats.tx_errors += tx_under + loss;
2108 dev->stats.collisions += multi_col
2109 + single_col + excess_col + late_col;
2111 dev->stats.rx_over_errors += rx_over;
2112 dev->stats.rx_crc_errors += crc;
2113 dev->stats.rx_frame_errors += code;
2115 dev->stats.tx_aborted_errors += tx_under;
2116 dev->stats.tx_carrier_errors += loss;
2124 /***************************************************************
2130 * dev Pointer to device structure of adapter
2133 * This function resets the adapter and it's physical
2134 * device. See Chap. 3, pp. 9-10 of the "ThunderLAN
2135 * Programmer's Guide" for details. The routine tries to
2136 * implement what is detailed there, though adjustments
2139 **************************************************************/
2142 tlan_reset_adapter(struct net_device *dev)
2144 struct tlan_priv *priv = netdev_priv(dev);
2150 priv->tlan_full_duplex = false;
2151 priv->phy_online = 0;
2152 netif_carrier_off(dev);
2154 /* 1. Assert reset bit. */
2156 data = inl(dev->base_addr + TLAN_HOST_CMD);
2157 data |= TLAN_HC_AD_RST;
2158 outl(data, dev->base_addr + TLAN_HOST_CMD);
2162 /* 2. Turn off interrupts. (Probably isn't necessary) */
2164 data = inl(dev->base_addr + TLAN_HOST_CMD);
2165 data |= TLAN_HC_INT_OFF;
2166 outl(data, dev->base_addr + TLAN_HOST_CMD);
2168 /* 3. Clear AREGs and HASHs. */
2170 for (i = TLAN_AREG_0; i <= TLAN_HASH_2; i += 4)
2171 tlan_dio_write32(dev->base_addr, (u16) i, 0);
2173 /* 4. Setup NetConfig register. */
2175 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN;
2176 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2178 /* 5. Load Ld_Tmr and Ld_Thr in HOST_CMD. */
2180 outl(TLAN_HC_LD_TMR | 0x3f, dev->base_addr + TLAN_HOST_CMD);
2181 outl(TLAN_HC_LD_THR | 0x9, dev->base_addr + TLAN_HOST_CMD);
2183 /* 6. Unreset the MII by setting NMRST (in NetSio) to 1. */
2185 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2186 addr = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2187 tlan_set_bit(TLAN_NET_SIO_NMRST, addr);
2189 /* 7. Setup the remaining registers. */
2191 if (priv->tlan_rev >= 0x30) {
2192 data8 = TLAN_ID_TX_EOC | TLAN_ID_RX_EOC;
2193 tlan_dio_write8(dev->base_addr, TLAN_INT_DIS, data8);
2195 tlan_phy_detect(dev);
2196 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN;
2198 if (priv->adapter->flags & TLAN_ADAPTER_BIT_RATE_PHY) {
2199 data |= TLAN_NET_CFG_BIT;
2200 if (priv->aui == 1) {
2201 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x0a);
2202 } else if (priv->duplex == TLAN_DUPLEX_FULL) {
2203 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x00);
2204 priv->tlan_full_duplex = true;
2206 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x08);
2210 /* don't power down internal PHY if we're going to use it */
2211 if (priv->phy_num == 0 ||
2212 (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10))
2213 data |= TLAN_NET_CFG_PHY_EN;
2214 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
2216 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY)
2217 tlan_finish_reset(dev);
2219 tlan_phy_power_down(dev);
2227 tlan_finish_reset(struct net_device *dev)
2229 struct tlan_priv *priv = netdev_priv(dev);
2237 u16 tlphy_id1, tlphy_id2;
2240 phy = priv->phy[priv->phy_num];
2242 data = TLAN_NET_CMD_NRESET | TLAN_NET_CMD_NWRAP;
2243 if (priv->tlan_full_duplex)
2244 data |= TLAN_NET_CMD_DUPLEX;
2245 tlan_dio_write8(dev->base_addr, TLAN_NET_CMD, data);
2246 data = TLAN_NET_MASK_MASK4 | TLAN_NET_MASK_MASK5;
2247 if (priv->phy_num == 0)
2248 data |= TLAN_NET_MASK_MASK7;
2249 tlan_dio_write8(dev->base_addr, TLAN_NET_MASK, data);
2250 tlan_dio_write16(dev->base_addr, TLAN_MAX_RX, ((1536)+7)&~7);
2251 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &tlphy_id1);
2252 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &tlphy_id2);
2254 if ((priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) ||
2256 status = MII_GS_LINK;
2257 netdev_info(dev, "Link forced\n");
2259 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2261 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2262 if (status & MII_GS_LINK) {
2263 /* We only support link info on Nat.Sem. PHY's */
2264 if ((tlphy_id1 == NAT_SEM_ID1) &&
2265 (tlphy_id2 == NAT_SEM_ID2)) {
2266 tlan_mii_read_reg(dev, phy, MII_AN_LPA,
2268 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_PAR,
2272 "Link active, %s %uMbps %s-Duplex\n",
2273 !(tlphy_par & TLAN_PHY_AN_EN_STAT)
2274 ? "forced" : "Autonegotiation enabled,",
2275 tlphy_par & TLAN_PHY_SPEED_100
2277 tlphy_par & TLAN_PHY_DUPLEX_FULL
2280 if (tlphy_par & TLAN_PHY_AN_EN_STAT) {
2281 netdev_info(dev, "Partner capability:");
2282 for (i = 5; i < 10; i++)
2283 if (partner & (1 << i))
2289 netdev_info(dev, "Link active\n");
2290 /* Enabling link beat monitoring */
2291 priv->media_timer.expires = jiffies + HZ;
2292 add_timer(&priv->media_timer);
2296 if (priv->phy_num == 0) {
2297 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
2298 tlphy_ctl |= TLAN_TC_INTEN;
2299 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tlphy_ctl);
2300 sio = tlan_dio_read8(dev->base_addr, TLAN_NET_SIO);
2301 sio |= TLAN_NET_SIO_MINTEN;
2302 tlan_dio_write8(dev->base_addr, TLAN_NET_SIO, sio);
2305 if (status & MII_GS_LINK) {
2306 tlan_set_mac(dev, 0, dev->dev_addr);
2307 priv->phy_online = 1;
2308 outb((TLAN_HC_INT_ON >> 8), dev->base_addr + TLAN_HOST_CMD + 1);
2309 if (debug >= 1 && debug != TLAN_DEBUG_PROBE)
2310 outb((TLAN_HC_REQ_INT >> 8),
2311 dev->base_addr + TLAN_HOST_CMD + 1);
2312 outl(priv->rx_list_dma, dev->base_addr + TLAN_CH_PARM);
2313 outl(TLAN_HC_GO | TLAN_HC_RT, dev->base_addr + TLAN_HOST_CMD);
2314 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK);
2315 netif_carrier_on(dev);
2317 netdev_info(dev, "Link inactive, will retry in 10 secs...\n");
2318 tlan_set_timer(dev, (10*HZ), TLAN_TIMER_FINISH_RESET);
2321 tlan_set_multicast_list(dev);
2328 /***************************************************************
2334 * dev Pointer to device structure of adapter
2335 * on which to change the AREG.
2336 * areg The AREG to set the address in (0 - 3).
2337 * mac A pointer to an array of chars. Each
2338 * element stores one byte of the address.
2339 * IE, it isn't in ascii.
2341 * This function transfers a MAC address to one of the
2342 * TLAN AREGs (address registers). The TLAN chip locks
2343 * the register on writing to offset 0 and unlocks the
2344 * register after writing to offset 5. If NULL is passed
2345 * in mac, then the AREG is filled with 0's.
2347 **************************************************************/
2349 static void tlan_set_mac(struct net_device *dev, int areg, char *mac)
2356 for (i = 0; i < 6; i++)
2357 tlan_dio_write8(dev->base_addr,
2358 TLAN_AREG_0 + areg + i, mac[i]);
2360 for (i = 0; i < 6; i++)
2361 tlan_dio_write8(dev->base_addr,
2362 TLAN_AREG_0 + areg + i, 0);
2370 /*****************************************************************************
2371 ******************************************************************************
2373 ThunderLAN driver PHY layer routines
2375 ******************************************************************************
2376 *****************************************************************************/
2380 /*********************************************************************
2386 * dev A pointer to the device structure of the
2387 * TLAN device having the PHYs to be detailed.
2389 * This function prints the registers a PHY (aka transceiver).
2391 ********************************************************************/
2393 static void tlan_phy_print(struct net_device *dev)
2395 struct tlan_priv *priv = netdev_priv(dev);
2396 u16 i, data0, data1, data2, data3, phy;
2398 phy = priv->phy[priv->phy_num];
2400 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2401 netdev_info(dev, "Unmanaged PHY\n");
2402 } else if (phy <= TLAN_PHY_MAX_ADDR) {
2403 netdev_info(dev, "PHY 0x%02x\n", phy);
2404 pr_info(" Off. +0 +1 +2 +3\n");
2405 for (i = 0; i < 0x20; i += 4) {
2406 tlan_mii_read_reg(dev, phy, i, &data0);
2407 tlan_mii_read_reg(dev, phy, i + 1, &data1);
2408 tlan_mii_read_reg(dev, phy, i + 2, &data2);
2409 tlan_mii_read_reg(dev, phy, i + 3, &data3);
2410 pr_info(" 0x%02x 0x%04hx 0x%04hx 0x%04hx 0x%04hx\n",
2411 i, data0, data1, data2, data3);
2414 netdev_info(dev, "Invalid PHY\n");
2422 /*********************************************************************
2428 * dev A pointer to the device structure of the adapter
2429 * for which the PHY needs determined.
2431 * So far I've found that adapters which have external PHYs
2432 * may also use the internal PHY for part of the functionality.
2433 * (eg, AUI/Thinnet). This function finds out if this TLAN
2434 * chip has an internal PHY, and then finds the first external
2435 * PHY (starting from address 0) if it exists).
2437 ********************************************************************/
2439 static void tlan_phy_detect(struct net_device *dev)
2441 struct tlan_priv *priv = netdev_priv(dev);
2447 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2448 priv->phy_num = 0xffff;
2452 tlan_mii_read_reg(dev, TLAN_PHY_MAX_ADDR, MII_GEN_ID_HI, &hi);
2455 priv->phy[0] = TLAN_PHY_MAX_ADDR;
2457 priv->phy[0] = TLAN_PHY_NONE;
2459 priv->phy[1] = TLAN_PHY_NONE;
2460 for (phy = 0; phy <= TLAN_PHY_MAX_ADDR; phy++) {
2461 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &control);
2462 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &hi);
2463 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &lo);
2464 if ((control != 0xffff) ||
2465 (hi != 0xffff) || (lo != 0xffff)) {
2466 TLAN_DBG(TLAN_DEBUG_GNRL,
2467 "PHY found at %02x %04x %04x %04x\n",
2468 phy, control, hi, lo);
2469 if ((priv->phy[1] == TLAN_PHY_NONE) &&
2470 (phy != TLAN_PHY_MAX_ADDR)) {
2476 if (priv->phy[1] != TLAN_PHY_NONE)
2478 else if (priv->phy[0] != TLAN_PHY_NONE)
2481 netdev_info(dev, "Cannot initialize device, no PHY was found!\n");
2488 static void tlan_phy_power_down(struct net_device *dev)
2490 struct tlan_priv *priv = netdev_priv(dev);
2493 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering down PHY(s).\n", dev->name);
2494 value = MII_GC_PDOWN | MII_GC_LOOPBK | MII_GC_ISOLATE;
2495 tlan_mii_sync(dev->base_addr);
2496 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2497 if ((priv->phy_num == 0) && (priv->phy[1] != TLAN_PHY_NONE)) {
2498 /* if using internal PHY, the external PHY must be powered on */
2499 if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10)
2500 value = MII_GC_ISOLATE; /* just isolate it from MII */
2501 tlan_mii_sync(dev->base_addr);
2502 tlan_mii_write_reg(dev, priv->phy[1], MII_GEN_CTL, value);
2505 /* Wait for 50 ms and powerup
2506 * This is arbitrary. It is intended to make sure the
2507 * transceiver settles.
2509 tlan_set_timer(dev, msecs_to_jiffies(50), TLAN_TIMER_PHY_PUP);
2516 static void tlan_phy_power_up(struct net_device *dev)
2518 struct tlan_priv *priv = netdev_priv(dev);
2521 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering up PHY.\n", dev->name);
2522 tlan_mii_sync(dev->base_addr);
2523 value = MII_GC_LOOPBK;
2524 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2525 tlan_mii_sync(dev->base_addr);
2526 /* Wait for 500 ms and reset the
2527 * transceiver. The TLAN docs say both 50 ms and
2528 * 500 ms, so do the longer, just in case.
2530 tlan_set_timer(dev, msecs_to_jiffies(500), TLAN_TIMER_PHY_RESET);
2537 static void tlan_phy_reset(struct net_device *dev)
2539 struct tlan_priv *priv = netdev_priv(dev);
2542 unsigned long timeout = jiffies + HZ;
2544 phy = priv->phy[priv->phy_num];
2546 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Resetting PHY.\n", dev->name);
2547 tlan_mii_sync(dev->base_addr);
2548 value = MII_GC_LOOPBK | MII_GC_RESET;
2549 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, value);
2551 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value);
2552 if (time_after(jiffies, timeout)) {
2553 netdev_err(dev, "PHY reset timeout\n");
2556 } while (value & MII_GC_RESET);
2558 /* Wait for 500 ms and initialize.
2559 * I don't remember why I wait this long.
2560 * I've changed this to 50ms, as it seems long enough.
2562 tlan_set_timer(dev, msecs_to_jiffies(50), TLAN_TIMER_PHY_START_LINK);
2569 static void tlan_phy_start_link(struct net_device *dev)
2571 struct tlan_priv *priv = netdev_priv(dev);
2579 phy = priv->phy[priv->phy_num];
2580 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Trying to activate link.\n", dev->name);
2581 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2582 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &ability);
2584 if ((status & MII_GS_AUTONEG) &&
2586 ability = status >> 11;
2587 if (priv->speed == TLAN_SPEED_10 &&
2588 priv->duplex == TLAN_DUPLEX_HALF) {
2589 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0000);
2590 } else if (priv->speed == TLAN_SPEED_10 &&
2591 priv->duplex == TLAN_DUPLEX_FULL) {
2592 priv->tlan_full_duplex = true;
2593 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0100);
2594 } else if (priv->speed == TLAN_SPEED_100 &&
2595 priv->duplex == TLAN_DUPLEX_HALF) {
2596 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2000);
2597 } else if (priv->speed == TLAN_SPEED_100 &&
2598 priv->duplex == TLAN_DUPLEX_FULL) {
2599 priv->tlan_full_duplex = true;
2600 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2100);
2603 /* Set Auto-Neg advertisement */
2604 tlan_mii_write_reg(dev, phy, MII_AN_ADV,
2605 (ability << 5) | 1);
2606 /* Enablee Auto-Neg */
2607 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1000);
2608 /* Restart Auto-Neg */
2609 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1200);
2610 /* Wait for 4 sec for autonegotiation
2611 * to complete. The max spec time is less than this
2612 * but the card need additional time to start AN.
2613 * .5 sec should be plenty extra.
2615 netdev_info(dev, "Starting autonegotiation\n");
2616 tlan_set_timer(dev, (2*HZ), TLAN_TIMER_PHY_FINISH_AN);
2622 if ((priv->aui) && (priv->phy_num != 0)) {
2624 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN
2625 | TLAN_NET_CFG_PHY_EN;
2626 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data);
2627 tlan_set_timer(dev, msecs_to_jiffies(40), TLAN_TIMER_PHY_PDOWN);
2629 } else if (priv->phy_num == 0) {
2631 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tctl);
2633 tctl |= TLAN_TC_AUISEL;
2635 tctl &= ~TLAN_TC_AUISEL;
2636 if (priv->duplex == TLAN_DUPLEX_FULL) {
2637 control |= MII_GC_DUPLEX;
2638 priv->tlan_full_duplex = true;
2640 if (priv->speed == TLAN_SPEED_100)
2641 control |= MII_GC_SPEEDSEL;
2643 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, control);
2644 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tctl);
2647 /* Wait for 2 sec to give the transceiver time
2648 * to establish link.
2650 tlan_set_timer(dev, (4*HZ), TLAN_TIMER_FINISH_RESET);
2657 static void tlan_phy_finish_auto_neg(struct net_device *dev)
2659 struct tlan_priv *priv = netdev_priv(dev);
2666 phy = priv->phy[priv->phy_num];
2668 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2670 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2672 if (!(status & MII_GS_AUTOCMPLT)) {
2673 /* Wait for 8 sec to give the process
2674 * more time. Perhaps we should fail after a while.
2676 tlan_set_timer(dev, 2 * HZ, TLAN_TIMER_PHY_FINISH_AN);
2680 netdev_info(dev, "Autonegotiation complete\n");
2681 tlan_mii_read_reg(dev, phy, MII_AN_ADV, &an_adv);
2682 tlan_mii_read_reg(dev, phy, MII_AN_LPA, &an_lpa);
2683 mode = an_adv & an_lpa & 0x03E0;
2685 priv->tlan_full_duplex = true;
2686 else if (!(mode & 0x0080) && (mode & 0x0040))
2687 priv->tlan_full_duplex = true;
2689 /* switch to internal PHY for 10 Mbps */
2690 if ((!(mode & 0x0180)) &&
2691 (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) &&
2692 (priv->phy_num != 0)) {
2694 tlan_set_timer(dev, msecs_to_jiffies(400), TLAN_TIMER_PHY_PDOWN);
2698 if (priv->phy_num == 0) {
2699 if ((priv->duplex == TLAN_DUPLEX_FULL) ||
2700 (an_adv & an_lpa & 0x0040)) {
2701 tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2702 MII_GC_AUTOENB | MII_GC_DUPLEX);
2703 netdev_info(dev, "Starting internal PHY with FULL-DUPLEX\n");
2705 tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2707 netdev_info(dev, "Starting internal PHY with HALF-DUPLEX\n");
2711 /* Wait for 100 ms. No reason in partiticular.
2713 tlan_set_timer(dev, msecs_to_jiffies(100), TLAN_TIMER_FINISH_RESET);
2718 /*********************************************************************
2726 * data The device structure of this device.
2729 * This function monitors PHY condition by reading the status
2730 * register via the MII bus, controls LINK LED and notifies the
2731 * kernel about link state.
2733 *******************************************************************/
2735 static void tlan_phy_monitor(struct timer_list *t)
2737 struct tlan_priv *priv = from_timer(priv, t, media_timer);
2738 struct net_device *dev = priv->dev;
2742 phy = priv->phy[priv->phy_num];
2744 /* Get PHY status register */
2745 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &phy_status);
2747 /* Check if link has been lost */
2748 if (!(phy_status & MII_GS_LINK)) {
2749 if (netif_carrier_ok(dev)) {
2750 printk(KERN_DEBUG "TLAN: %s has lost link\n",
2752 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, 0);
2753 netif_carrier_off(dev);
2754 if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) {
2755 /* power down internal PHY */
2756 u16 data = MII_GC_PDOWN | MII_GC_LOOPBK |
2759 tlan_mii_sync(dev->base_addr);
2760 tlan_mii_write_reg(dev, priv->phy[0],
2762 /* set to external PHY */
2764 /* restart autonegotiation */
2765 tlan_set_timer(dev, msecs_to_jiffies(400),
2766 TLAN_TIMER_PHY_PDOWN);
2772 /* Link restablished? */
2773 if ((phy_status & MII_GS_LINK) && !netif_carrier_ok(dev)) {
2774 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK);
2775 printk(KERN_DEBUG "TLAN: %s has reestablished link\n",
2777 netif_carrier_on(dev);
2779 priv->media_timer.expires = jiffies + HZ;
2780 add_timer(&priv->media_timer);
2784 /*****************************************************************************
2785 ******************************************************************************
2787 ThunderLAN driver MII routines
2789 these routines are based on the information in chap. 2 of the
2790 "ThunderLAN Programmer's Guide", pp. 15-24.
2792 ******************************************************************************
2793 *****************************************************************************/
2796 /***************************************************************
2800 * false if ack received ok
2801 * true if no ack received or other error
2804 * dev The device structure containing
2805 * The io address and interrupt count
2807 * phy The address of the PHY to be queried.
2808 * reg The register whose contents are to be
2810 * val A pointer to a variable to store the
2813 * This function uses the TLAN's MII bus to retrieve the contents
2814 * of a given register on a PHY. It sends the appropriate info
2815 * and then reads the 16-bit register value from the MII bus via
2816 * the TLAN SIO register.
2818 **************************************************************/
2821 tlan_mii_read_reg(struct net_device *dev, u16 phy, u16 reg, u16 *val)
2828 struct tlan_priv *priv = netdev_priv(dev);
2829 unsigned long flags = 0;
2832 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2833 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2836 spin_lock_irqsave(&priv->lock, flags);
2838 tlan_mii_sync(dev->base_addr);
2840 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
2842 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
2844 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */
2845 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* read (10b) */
2846 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */
2847 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */
2850 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio); /* change direction */
2852 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* clock idle bit */
2853 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2854 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* wait 300ns */
2856 nack = tlan_get_bit(TLAN_NET_SIO_MDATA, sio); /* check for ACK */
2857 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); /* finish ACK */
2858 if (nack) { /* no ACK, so fake it */
2859 for (i = 0; i < 16; i++) {
2860 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2861 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2865 } else { /* ACK, so read data */
2866 for (tmp = 0, i = 0x8000; i; i >>= 1) {
2867 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2868 if (tlan_get_bit(TLAN_NET_SIO_MDATA, sio))
2870 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2875 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
2876 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2879 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
2884 spin_unlock_irqrestore(&priv->lock, flags);
2893 /***************************************************************
2894 * tlan_mii_send_data
2899 * base_port The base IO port of the adapter in
2901 * dev The address of the PHY to be queried.
2902 * data The value to be placed on the MII bus.
2903 * num_bits The number of bits in data that are to
2904 * be placed on the MII bus.
2906 * This function sends on sequence of bits on the MII
2907 * configuration bus.
2909 **************************************************************/
2911 static void tlan_mii_send_data(u16 base_port, u32 data, unsigned num_bits)
2919 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2920 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2921 tlan_set_bit(TLAN_NET_SIO_MTXEN, sio);
2923 for (i = (0x1 << (num_bits - 1)); i; i >>= 1) {
2924 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2925 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2927 tlan_set_bit(TLAN_NET_SIO_MDATA, sio);
2929 tlan_clear_bit(TLAN_NET_SIO_MDATA, sio);
2930 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2931 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2939 /***************************************************************
2945 * base_port The base IO port of the adapter in
2948 * This functions syncs all PHYs in terms of the MII configuration
2951 **************************************************************/
2953 static void tlan_mii_sync(u16 base_port)
2958 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
2959 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2961 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio);
2962 for (i = 0; i < 32; i++) {
2963 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2964 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2972 /***************************************************************
2973 * tlan_mii_write_reg
2978 * dev The device structure for the device
2980 * phy The address of the PHY to be written to.
2981 * reg The register whose contents are to be
2983 * val The value to be written to the register.
2985 * This function uses the TLAN's MII bus to write the contents of a
2986 * given register on a PHY. It sends the appropriate info and then
2987 * writes the 16-bit register value from the MII configuration bus
2988 * via the TLAN SIO register.
2990 **************************************************************/
2993 tlan_mii_write_reg(struct net_device *dev, u16 phy, u16 reg, u16 val)
2997 unsigned long flags = 0;
2998 struct tlan_priv *priv = netdev_priv(dev);
3000 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
3001 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
3004 spin_lock_irqsave(&priv->lock, flags);
3006 tlan_mii_sync(dev->base_addr);
3008 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
3010 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
3012 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */
3013 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* write (01b) */
3014 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */
3015 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */
3017 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* send ACK */
3018 tlan_mii_send_data(dev->base_addr, val, 16); /* send data */
3020 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
3021 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
3024 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
3027 spin_unlock_irqrestore(&priv->lock, flags);
3034 /*****************************************************************************
3035 ******************************************************************************
3037 ThunderLAN driver eeprom routines
3039 the Compaq netelligent 10 and 10/100 cards use a microchip 24C02A
3040 EEPROM. these functions are based on information in microchip's
3041 data sheet. I don't know how well this functions will work with
3044 ******************************************************************************
3045 *****************************************************************************/
3048 /***************************************************************
3049 * tlan_ee_send_start
3054 * io_base The IO port base address for the
3055 * TLAN device with the EEPROM to
3058 * This function sends a start cycle to an EEPROM attached
3061 **************************************************************/
3063 static void tlan_ee_send_start(u16 io_base)
3067 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3068 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3070 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3071 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3072 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3073 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3074 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3081 /***************************************************************
3085 * If the correct ack was received, 0, otherwise 1
3086 * Parms: io_base The IO port base address for the
3087 * TLAN device with the EEPROM to
3089 * data The 8 bits of information to
3090 * send to the EEPROM.
3091 * stop If TLAN_EEPROM_STOP is passed, a
3092 * stop cycle is sent after the
3093 * byte is sent after the ack is
3096 * This function sends a byte on the serial EEPROM line,
3097 * driving the clock to send each bit. The function then
3098 * reverses transmission direction and reads an acknowledge
3101 **************************************************************/
3103 static int tlan_ee_send_byte(u16 io_base, u8 data, int stop)
3109 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3110 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3112 /* Assume clock is low, tx is enabled; */
3113 for (place = 0x80; place != 0; place >>= 1) {
3115 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3117 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3118 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3119 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3121 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3122 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3123 err = tlan_get_bit(TLAN_NET_SIO_EDATA, sio);
3124 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3125 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3127 if ((!err) && stop) {
3128 /* STOP, raise data while clock is high */
3129 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3130 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3131 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3141 /***************************************************************
3142 * tlan_ee_receive_byte
3147 * io_base The IO port base address for the
3148 * TLAN device with the EEPROM to
3150 * data An address to a char to hold the
3151 * data sent from the EEPROM.
3152 * stop If TLAN_EEPROM_STOP is passed, a
3153 * stop cycle is sent after the
3154 * byte is received, and no ack is
3157 * This function receives 8 bits of data from the EEPROM
3158 * over the serial link. It then sends and ack bit, or no
3159 * ack and a stop bit. This function is used to retrieve
3160 * data after the address of a byte in the EEPROM has been
3163 **************************************************************/
3165 static void tlan_ee_receive_byte(u16 io_base, u8 *data, int stop)
3170 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
3171 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3174 /* Assume clock is low, tx is enabled; */
3175 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3176 for (place = 0x80; place; place >>= 1) {
3177 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3178 if (tlan_get_bit(TLAN_NET_SIO_EDATA, sio))
3180 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3183 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3185 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); /* ack = 0 */
3186 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3187 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3189 tlan_set_bit(TLAN_NET_SIO_EDATA, sio); /* no ack = 1 (?) */
3190 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3191 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3192 /* STOP, raise data while clock is high */
3193 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3194 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3195 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3203 /***************************************************************
3207 * No error = 0, else, the stage at which the error
3210 * io_base The IO port base address for the
3211 * TLAN device with the EEPROM to
3213 * ee_addr The address of the byte in the
3214 * EEPROM whose contents are to be
3216 * data An address to a char to hold the
3217 * data obtained from the EEPROM.
3219 * This function reads a byte of information from an byte
3220 * cell in the EEPROM.
3222 **************************************************************/
3224 static int tlan_ee_read_byte(struct net_device *dev, u8 ee_addr, u8 *data)
3227 struct tlan_priv *priv = netdev_priv(dev);
3228 unsigned long flags = 0;
3231 spin_lock_irqsave(&priv->lock, flags);
3233 tlan_ee_send_start(dev->base_addr);
3234 err = tlan_ee_send_byte(dev->base_addr, 0xa0, TLAN_EEPROM_ACK);
3239 err = tlan_ee_send_byte(dev->base_addr, ee_addr, TLAN_EEPROM_ACK);
3244 tlan_ee_send_start(dev->base_addr);
3245 err = tlan_ee_send_byte(dev->base_addr, 0xa1, TLAN_EEPROM_ACK);
3250 tlan_ee_receive_byte(dev->base_addr, data, TLAN_EEPROM_STOP);
3252 spin_unlock_irqrestore(&priv->lock, flags);