1 | /******************************************************************************* |
2 | * |
3 | * Linux ThunderLAN Driver |
4 | * |
5 | * tlan.c |
6 | * by James Banks |
7 | * |
8 | * (C) 1997-1998 Caldera, Inc. |
9 | * (C) 1998 James Banks |
10 | * (C) 1999-2001 Torben Mathiasen |
11 | * (C) 2002 Samuel Chessman |
12 | * |
13 | * This software may be used and distributed according to the terms |
14 | * of the GNU General Public License, incorporated herein by reference. |
15 | * |
16 | ** Useful (if not required) reading: |
17 | * |
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 |
27 | * |
28 | ******************************************************************************/ |
29 | |
30 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
31 | |
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> |
46 | |
47 | #include "tlan.h" |
48 | |
49 | |
50 | /* For removing EISA devices */ |
51 | static struct net_device *tlan_eisa_devices; |
52 | |
53 | static int tlan_devices_installed; |
54 | |
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)" ); |
67 | |
68 | MODULE_AUTHOR("Maintainer: Samuel Chessman <chessman@tux.org>" ); |
69 | MODULE_DESCRIPTION("Driver for TI ThunderLAN based ethernet PCI adapters" ); |
70 | MODULE_LICENSE("GPL" ); |
71 | |
72 | /* Turn on debugging. |
73 | * See Documentation/networking/device_drivers/ethernet/ti/tlan.rst for details |
74 | */ |
75 | static int debug; |
76 | module_param(debug, int, 0); |
77 | MODULE_PARM_DESC(debug, "ThunderLAN debug mask" ); |
78 | |
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; |
83 | |
84 | static const char * const media[] = { |
85 | "10BaseT-HD" , "10BaseT-FD" , "100baseTx-HD" , |
86 | "100BaseTx-FD" , "100BaseT4" , NULL |
87 | }; |
88 | |
89 | static struct board { |
90 | const char *device_label; |
91 | u32 flags; |
92 | u16 addr_ofs; |
93 | } board_info[] = { |
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 */ |
119 | }; |
120 | |
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 }, |
148 | { 0,} |
149 | }; |
150 | MODULE_DEVICE_TABLE(pci, tlan_pci_tbl); |
151 | |
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); |
168 | |
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); |
176 | |
177 | static void tlan_timer(struct timer_list *t); |
178 | static void tlan_phy_monitor(struct timer_list *t); |
179 | |
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, const char *mac); |
188 | |
189 | static void __tlan_phy_print(struct net_device *); |
190 | static void tlan_phy_print(struct net_device *); |
191 | static void tlan_phy_detect(struct net_device *); |
192 | static void tlan_phy_power_down(struct net_device *); |
193 | static void tlan_phy_power_up(struct net_device *); |
194 | static void tlan_phy_reset(struct net_device *); |
195 | static void tlan_phy_start_link(struct net_device *); |
196 | static void tlan_phy_finish_auto_neg(struct net_device *); |
197 | |
198 | /* |
199 | static int tlan_phy_nop(struct net_device *); |
200 | static int tlan_phy_internal_check(struct net_device *); |
201 | static int tlan_phy_internal_service(struct net_device *); |
202 | static int tlan_phy_dp83840a_check(struct net_device *); |
203 | */ |
204 | |
205 | static bool __tlan_mii_read_reg(struct net_device *, u16, u16, u16 *); |
206 | static void tlan_mii_read_reg(struct net_device *, u16, u16, u16 *); |
207 | static void tlan_mii_send_data(u16, u32, unsigned); |
208 | static void tlan_mii_sync(u16); |
209 | static void __tlan_mii_write_reg(struct net_device *, u16, u16, u16); |
210 | static void tlan_mii_write_reg(struct net_device *, u16, u16, u16); |
211 | |
212 | static void tlan_ee_send_start(u16); |
213 | static int tlan_ee_send_byte(u16, u8, int); |
214 | static void tlan_ee_receive_byte(u16, u8 *, int); |
215 | static int tlan_ee_read_byte(struct net_device *, u8, u8 *); |
216 | |
217 | |
218 | static inline void |
219 | tlan_store_skb(struct tlan_list *tag, struct sk_buff *skb) |
220 | { |
221 | unsigned long addr = (unsigned long)skb; |
222 | tag->buffer[9].address = addr; |
223 | tag->buffer[8].address = upper_32_bits(addr); |
224 | } |
225 | |
226 | static inline struct sk_buff * |
227 | tlan_get_skb(const struct tlan_list *tag) |
228 | { |
229 | unsigned long addr; |
230 | |
231 | addr = tag->buffer[9].address; |
232 | addr |= ((unsigned long) tag->buffer[8].address << 16) << 16; |
233 | return (struct sk_buff *) addr; |
234 | } |
235 | |
236 | static u32 |
237 | (*tlan_int_vector[TLAN_INT_NUMBER_OF_INTS])(struct net_device *, u16) = { |
238 | NULL, |
239 | tlan_handle_tx_eof, |
240 | tlan_handle_stat_overflow, |
241 | tlan_handle_rx_eof, |
242 | tlan_handle_dummy, |
243 | tlan_handle_tx_eoc, |
244 | tlan_handle_status_check, |
245 | tlan_handle_rx_eoc |
246 | }; |
247 | |
248 | static void |
249 | tlan_set_timer(struct net_device *dev, u32 ticks, u32 type) |
250 | { |
251 | struct tlan_priv *priv = netdev_priv(dev); |
252 | unsigned long flags = 0; |
253 | |
254 | spin_lock_irqsave(&priv->lock, flags); |
255 | if (priv->timer.function != NULL && |
256 | priv->timer_type != TLAN_TIMER_ACTIVITY) { |
257 | spin_unlock_irqrestore(lock: &priv->lock, flags); |
258 | return; |
259 | } |
260 | priv->timer.function = tlan_timer; |
261 | spin_unlock_irqrestore(lock: &priv->lock, flags); |
262 | |
263 | priv->timer_set_at = jiffies; |
264 | priv->timer_type = type; |
265 | mod_timer(timer: &priv->timer, expires: jiffies + ticks); |
266 | |
267 | } |
268 | |
269 | |
270 | /***************************************************************************** |
271 | ****************************************************************************** |
272 | |
273 | ThunderLAN driver primary functions |
274 | |
275 | these functions are more or less common to all linux network drivers. |
276 | |
277 | ****************************************************************************** |
278 | *****************************************************************************/ |
279 | |
280 | |
281 | |
282 | |
283 | |
284 | /*************************************************************** |
285 | * tlan_remove_one |
286 | * |
287 | * Returns: |
288 | * Nothing |
289 | * Parms: |
290 | * None |
291 | * |
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. |
296 | * |
297 | **************************************************************/ |
298 | |
299 | |
300 | static void tlan_remove_one(struct pci_dev *pdev) |
301 | { |
302 | struct net_device *dev = pci_get_drvdata(pdev); |
303 | struct tlan_priv *priv = netdev_priv(dev); |
304 | |
305 | unregister_netdev(dev); |
306 | |
307 | if (priv->dma_storage) { |
308 | dma_free_coherent(dev: &priv->pci_dev->dev, size: priv->dma_size, |
309 | cpu_addr: priv->dma_storage, dma_handle: priv->dma_storage_dma); |
310 | } |
311 | |
312 | #ifdef CONFIG_PCI |
313 | pci_release_regions(pdev); |
314 | #endif |
315 | |
316 | cancel_work_sync(work: &priv->tlan_tqueue); |
317 | free_netdev(dev); |
318 | } |
319 | |
320 | static void tlan_start(struct net_device *dev) |
321 | { |
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. |
325 | */ |
326 | tlan_read_and_clear_stats(dev, TLAN_IGNORE); |
327 | tlan_reset_adapter(dev); |
328 | netif_wake_queue(dev); |
329 | } |
330 | |
331 | static void tlan_stop(struct net_device *dev) |
332 | { |
333 | struct tlan_priv *priv = netdev_priv(dev); |
334 | |
335 | del_timer_sync(timer: &priv->media_timer); |
336 | tlan_read_and_clear_stats(dev, TLAN_RECORD); |
337 | outl(TLAN_HC_AD_RST, port: 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(timer: &priv->timer); |
342 | priv->timer.function = NULL; |
343 | } |
344 | } |
345 | |
346 | static int __maybe_unused tlan_suspend(struct device *dev_d) |
347 | { |
348 | struct net_device *dev = dev_get_drvdata(dev: dev_d); |
349 | |
350 | if (netif_running(dev)) |
351 | tlan_stop(dev); |
352 | |
353 | netif_device_detach(dev); |
354 | |
355 | return 0; |
356 | } |
357 | |
358 | static int __maybe_unused tlan_resume(struct device *dev_d) |
359 | { |
360 | struct net_device *dev = dev_get_drvdata(dev: dev_d); |
361 | netif_device_attach(dev); |
362 | |
363 | if (netif_running(dev)) |
364 | tlan_start(dev); |
365 | |
366 | return 0; |
367 | } |
368 | |
369 | static SIMPLE_DEV_PM_OPS(tlan_pm_ops, tlan_suspend, tlan_resume); |
370 | |
371 | static struct pci_driver tlan_driver = { |
372 | .name = "tlan" , |
373 | .id_table = tlan_pci_tbl, |
374 | .probe = tlan_init_one, |
375 | .remove = tlan_remove_one, |
376 | .driver.pm = &tlan_pm_ops, |
377 | }; |
378 | |
379 | static int __init tlan_probe(void) |
380 | { |
381 | int rc = -ENODEV; |
382 | |
383 | pr_info("%s" , tlan_banner); |
384 | |
385 | TLAN_DBG(TLAN_DEBUG_PROBE, "Starting PCI Probe....\n" ); |
386 | |
387 | /* Use new style PCI probing. Now the kernel will |
388 | do most of this for us */ |
389 | rc = pci_register_driver(&tlan_driver); |
390 | |
391 | if (rc != 0) { |
392 | pr_err("Could not register pci driver\n" ); |
393 | goto err_out_pci_free; |
394 | } |
395 | |
396 | TLAN_DBG(TLAN_DEBUG_PROBE, "Starting EISA Probe....\n" ); |
397 | tlan_eisa_probe(); |
398 | |
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); |
402 | |
403 | if (tlan_devices_installed == 0) { |
404 | rc = -ENODEV; |
405 | goto err_out_pci_unreg; |
406 | } |
407 | return 0; |
408 | |
409 | err_out_pci_unreg: |
410 | pci_unregister_driver(dev: &tlan_driver); |
411 | err_out_pci_free: |
412 | return rc; |
413 | } |
414 | |
415 | |
416 | static int tlan_init_one(struct pci_dev *pdev, |
417 | const struct pci_device_id *ent) |
418 | { |
419 | return tlan_probe1(pdev, ioaddr: -1, irq: -1, rev: 0, ent); |
420 | } |
421 | |
422 | |
423 | /* |
424 | *************************************************************** |
425 | * tlan_probe1 |
426 | * |
427 | * Returns: |
428 | * 0 on success, error code on error |
429 | * Parms: |
430 | * none |
431 | * |
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. |
439 | * |
440 | **************************************************************/ |
441 | |
442 | static int tlan_probe1(struct pci_dev *pdev, long ioaddr, int irq, int rev, |
443 | const struct pci_device_id *ent) |
444 | { |
445 | |
446 | struct net_device *dev; |
447 | struct tlan_priv *priv; |
448 | u16 device_id; |
449 | int reg, rc = -ENODEV; |
450 | |
451 | #ifdef CONFIG_PCI |
452 | if (pdev) { |
453 | rc = pci_enable_device(dev: pdev); |
454 | if (rc) |
455 | return rc; |
456 | |
457 | rc = pci_request_regions(pdev, tlan_signature); |
458 | if (rc) { |
459 | pr_err("Could not reserve IO regions\n" ); |
460 | goto err_out; |
461 | } |
462 | } |
463 | #endif /* CONFIG_PCI */ |
464 | |
465 | dev = alloc_etherdev(sizeof(struct tlan_priv)); |
466 | if (dev == NULL) { |
467 | rc = -ENOMEM; |
468 | goto err_out_regions; |
469 | } |
470 | SET_NETDEV_DEV(dev, &pdev->dev); |
471 | |
472 | priv = netdev_priv(dev); |
473 | |
474 | priv->pci_dev = pdev; |
475 | priv->dev = dev; |
476 | |
477 | /* Is this a PCI device? */ |
478 | if (pdev) { |
479 | u32 pci_io_base = 0; |
480 | |
481 | priv->adapter = &board_info[ent->driver_data]; |
482 | |
483 | rc = dma_set_mask(dev: &pdev->dev, DMA_BIT_MASK(32)); |
484 | if (rc) { |
485 | pr_err("No suitable PCI mapping available\n" ); |
486 | goto err_out_free_dev; |
487 | } |
488 | |
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" , |
494 | pci_io_base); |
495 | break; |
496 | } |
497 | } |
498 | if (!pci_io_base) { |
499 | pr_err("No IO mappings available\n" ); |
500 | rc = -EIO; |
501 | goto err_out_free_dev; |
502 | } |
503 | |
504 | dev->base_addr = pci_io_base; |
505 | dev->irq = pdev->irq; |
506 | priv->adapter_rev = pdev->revision; |
507 | pci_set_master(dev: pdev); |
508 | pci_set_drvdata(pdev, data: dev); |
509 | |
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(port: 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 */ |
517 | } else { |
518 | priv->adapter = &board_info[14]; |
519 | priv->adapter_rev = 10; /* TLAN 1.0 */ |
520 | } |
521 | dev->base_addr = ioaddr; |
522 | dev->irq = irq; |
523 | } |
524 | |
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; |
532 | |
533 | if (priv->speed == 0x1) |
534 | priv->speed = TLAN_SPEED_10; |
535 | else if (priv->speed == 0x2) |
536 | priv->speed = TLAN_SPEED_100; |
537 | |
538 | debug = priv->debug = dev->mem_end; |
539 | } else { |
540 | priv->aui = aui[boards_found]; |
541 | priv->speed = speed[boards_found]; |
542 | priv->duplex = duplex[boards_found]; |
543 | priv->debug = debug; |
544 | } |
545 | |
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); |
549 | |
550 | spin_lock_init(&priv->lock); |
551 | |
552 | rc = tlan_init(dev); |
553 | if (rc) { |
554 | pr_err("Could not set up device\n" ); |
555 | goto err_out_free_dev; |
556 | } |
557 | |
558 | rc = register_netdev(dev); |
559 | if (rc) { |
560 | pr_err("Could not register device\n" ); |
561 | goto err_out_uninit; |
562 | } |
563 | |
564 | |
565 | tlan_devices_installed++; |
566 | boards_found++; |
567 | |
568 | /* pdev is NULL if this is an EISA device */ |
569 | if (pdev) |
570 | tlan_have_pci++; |
571 | else { |
572 | priv->next_device = tlan_eisa_devices; |
573 | tlan_eisa_devices = dev; |
574 | tlan_have_eisa++; |
575 | } |
576 | |
577 | netdev_info(dev, format: "irq=%2d, io=%04x, %s, Rev. %d\n" , |
578 | (int)dev->irq, |
579 | (int)dev->base_addr, |
580 | priv->adapter->device_label, |
581 | priv->adapter_rev); |
582 | return 0; |
583 | |
584 | err_out_uninit: |
585 | dma_free_coherent(dev: &priv->pci_dev->dev, size: priv->dma_size, |
586 | cpu_addr: priv->dma_storage, dma_handle: priv->dma_storage_dma); |
587 | err_out_free_dev: |
588 | free_netdev(dev); |
589 | err_out_regions: |
590 | #ifdef CONFIG_PCI |
591 | if (pdev) |
592 | pci_release_regions(pdev); |
593 | err_out: |
594 | #endif |
595 | if (pdev) |
596 | pci_disable_device(dev: pdev); |
597 | return rc; |
598 | } |
599 | |
600 | |
601 | static void tlan_eisa_cleanup(void) |
602 | { |
603 | struct net_device *dev; |
604 | struct tlan_priv *priv; |
605 | |
606 | while (tlan_have_eisa) { |
607 | dev = tlan_eisa_devices; |
608 | priv = netdev_priv(dev); |
609 | if (priv->dma_storage) { |
610 | dma_free_coherent(dev: &priv->pci_dev->dev, size: priv->dma_size, |
611 | cpu_addr: priv->dma_storage, |
612 | dma_handle: priv->dma_storage_dma); |
613 | } |
614 | release_region(dev->base_addr, 0x10); |
615 | unregister_netdev(dev); |
616 | tlan_eisa_devices = priv->next_device; |
617 | free_netdev(dev); |
618 | tlan_have_eisa--; |
619 | } |
620 | } |
621 | |
622 | |
623 | static void __exit tlan_exit(void) |
624 | { |
625 | pci_unregister_driver(dev: &tlan_driver); |
626 | |
627 | if (tlan_have_eisa) |
628 | tlan_eisa_cleanup(); |
629 | |
630 | } |
631 | |
632 | |
633 | /* Module loading/unloading */ |
634 | module_init(tlan_probe); |
635 | module_exit(tlan_exit); |
636 | |
637 | |
638 | |
639 | /************************************************************** |
640 | * tlan_eisa_probe |
641 | * |
642 | * Returns: 0 on success, 1 otherwise |
643 | * |
644 | * Parms: None |
645 | * |
646 | * |
647 | * This functions probes for EISA devices and calls |
648 | * TLan_probe1 when one is found. |
649 | * |
650 | *************************************************************/ |
651 | |
652 | static void __init tlan_eisa_probe(void) |
653 | { |
654 | long ioaddr; |
655 | int irq; |
656 | u16 device_id; |
657 | |
658 | if (!EISA_bus) { |
659 | TLAN_DBG(TLAN_DEBUG_PROBE, "No EISA bus present\n" ); |
660 | return; |
661 | } |
662 | |
663 | /* Loop through all slots of the EISA bus */ |
664 | for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) { |
665 | |
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)); |
670 | |
671 | |
672 | TLAN_DBG(TLAN_DEBUG_PROBE, |
673 | "Probing for EISA adapter at IO: 0x%4x : " , |
674 | (int) ioaddr); |
675 | if (request_region(ioaddr, 0x10, tlan_signature) == NULL) |
676 | goto out; |
677 | |
678 | if (inw(port: ioaddr + EISA_ID) != 0x110E) { |
679 | release_region(ioaddr, 0x10); |
680 | goto out; |
681 | } |
682 | |
683 | device_id = inw(port: ioaddr + EISA_ID2); |
684 | if (device_id != 0x20F1 && device_id != 0x40F1) { |
685 | release_region(ioaddr, 0x10); |
686 | goto out; |
687 | } |
688 | |
689 | /* check if adapter is enabled */ |
690 | if (inb(port: ioaddr + EISA_CR) != 0x1) { |
691 | release_region(ioaddr, 0x10); |
692 | goto out2; |
693 | } |
694 | |
695 | if (debug == 0x10) |
696 | pr_info("Found one\n" ); |
697 | |
698 | |
699 | /* Get irq from board */ |
700 | switch (inb(port: ioaddr + 0xcc0)) { |
701 | case(0x10): |
702 | irq = 5; |
703 | break; |
704 | case(0x20): |
705 | irq = 9; |
706 | break; |
707 | case(0x40): |
708 | irq = 10; |
709 | break; |
710 | case(0x80): |
711 | irq = 11; |
712 | break; |
713 | default: |
714 | goto out; |
715 | } |
716 | |
717 | |
718 | /* Setup the newly found eisa adapter */ |
719 | tlan_probe1(NULL, ioaddr, irq, rev: 12, NULL); |
720 | continue; |
721 | |
722 | out: |
723 | if (debug == 0x10) |
724 | pr_info("None found\n" ); |
725 | continue; |
726 | |
727 | out2: |
728 | if (debug == 0x10) |
729 | pr_info("Card found but it is not enabled, skipping\n" ); |
730 | continue; |
731 | |
732 | } |
733 | |
734 | } |
735 | |
736 | #ifdef CONFIG_NET_POLL_CONTROLLER |
737 | static void tlan_poll(struct net_device *dev) |
738 | { |
739 | disable_irq(irq: dev->irq); |
740 | tlan_handle_interrupt(dev->irq, dev); |
741 | enable_irq(irq: dev->irq); |
742 | } |
743 | #endif |
744 | |
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_eth_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, |
757 | #endif |
758 | }; |
759 | |
760 | static void tlan_get_drvinfo(struct net_device *dev, |
761 | struct ethtool_drvinfo *info) |
762 | { |
763 | struct tlan_priv *priv = netdev_priv(dev); |
764 | |
765 | strscpy(p: info->driver, KBUILD_MODNAME, size: sizeof(info->driver)); |
766 | if (priv->pci_dev) |
767 | strscpy(p: info->bus_info, q: pci_name(pdev: priv->pci_dev), |
768 | size: sizeof(info->bus_info)); |
769 | else |
770 | strscpy(p: info->bus_info, q: "EISA" , size: sizeof(info->bus_info)); |
771 | } |
772 | |
773 | static int tlan_get_eeprom_len(struct net_device *dev) |
774 | { |
775 | return TLAN_EEPROM_SIZE; |
776 | } |
777 | |
778 | static int tlan_get_eeprom(struct net_device *dev, |
779 | struct ethtool_eeprom *eeprom, u8 *data) |
780 | { |
781 | int i; |
782 | |
783 | for (i = 0; i < TLAN_EEPROM_SIZE; i++) |
784 | if (tlan_ee_read_byte(dev, i, &data[i])) |
785 | return -EIO; |
786 | |
787 | return 0; |
788 | } |
789 | |
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, |
795 | }; |
796 | |
797 | /*************************************************************** |
798 | * tlan_init |
799 | * |
800 | * Returns: |
801 | * 0 on success, error code otherwise. |
802 | * Parms: |
803 | * dev The structure of the device to be |
804 | * init'ed. |
805 | * |
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. |
811 | * |
812 | **************************************************************/ |
813 | |
814 | static int tlan_init(struct net_device *dev) |
815 | { |
816 | int dma_size; |
817 | int err; |
818 | int i; |
819 | struct tlan_priv *priv; |
820 | u8 addr[ETH_ALEN]; |
821 | |
822 | priv = netdev_priv(dev); |
823 | |
824 | dma_size = (TLAN_NUM_RX_LISTS + TLAN_NUM_TX_LISTS) |
825 | * (sizeof(struct tlan_list)); |
826 | priv->dma_storage = dma_alloc_coherent(dev: &priv->pci_dev->dev, size: dma_size, |
827 | dma_handle: &priv->dma_storage_dma, GFP_KERNEL); |
828 | priv->dma_size = dma_size; |
829 | |
830 | if (priv->dma_storage == NULL) { |
831 | pr_err("Could not allocate lists and buffers for %s\n" , |
832 | dev->name); |
833 | return -ENOMEM; |
834 | } |
835 | priv->rx_list = (struct tlan_list *) |
836 | ALIGN((unsigned long)priv->dma_storage, 8); |
837 | priv->rx_list_dma = ALIGN(priv->dma_storage_dma, 8); |
838 | priv->tx_list = priv->rx_list + TLAN_NUM_RX_LISTS; |
839 | priv->tx_list_dma = |
840 | priv->rx_list_dma + sizeof(struct tlan_list)*TLAN_NUM_RX_LISTS; |
841 | |
842 | err = 0; |
843 | for (i = 0; i < ETH_ALEN; i++) |
844 | err |= tlan_ee_read_byte(dev, |
845 | (u8) priv->adapter->addr_ofs + i, |
846 | addr + i); |
847 | if (err) { |
848 | pr_err("%s: Error reading MAC from eeprom: %d\n" , |
849 | dev->name, err); |
850 | } |
851 | /* Olicom OC-2325/OC-2326 have the address byte-swapped */ |
852 | if (priv->adapter->addr_ofs == 0xf8) { |
853 | for (i = 0; i < ETH_ALEN; i += 2) { |
854 | char tmp = addr[i]; |
855 | addr[i] = addr[i + 1]; |
856 | addr[i + 1] = tmp; |
857 | } |
858 | } |
859 | eth_hw_addr_set(dev, addr); |
860 | |
861 | netif_carrier_off(dev); |
862 | |
863 | /* Device methods */ |
864 | dev->netdev_ops = &tlan_netdev_ops; |
865 | dev->ethtool_ops = &tlan_ethtool_ops; |
866 | dev->watchdog_timeo = TX_TIMEOUT; |
867 | |
868 | return 0; |
869 | |
870 | } |
871 | |
872 | |
873 | |
874 | |
875 | /*************************************************************** |
876 | * tlan_open |
877 | * |
878 | * Returns: |
879 | * 0 on success, error code otherwise. |
880 | * Parms: |
881 | * dev Structure of device to be opened. |
882 | * |
883 | * This routine puts the driver and TLAN adapter in a |
884 | * state where it is ready to send and receive packets. |
885 | * It allocates the IRQ, resets and brings the adapter |
886 | * out of reset, and allows interrupts. It also delays |
887 | * the startup for autonegotiation or sends a Rx GO |
888 | * command to the adapter, as appropriate. |
889 | * |
890 | **************************************************************/ |
891 | |
892 | static int tlan_open(struct net_device *dev) |
893 | { |
894 | struct tlan_priv *priv = netdev_priv(dev); |
895 | int err; |
896 | |
897 | priv->tlan_rev = tlan_dio_read8(base_addr: dev->base_addr, TLAN_DEF_REVISION); |
898 | err = request_irq(irq: dev->irq, handler: tlan_handle_interrupt, IRQF_SHARED, |
899 | name: dev->name, dev); |
900 | |
901 | if (err) { |
902 | netdev_err(dev, format: "Cannot open because IRQ %d is already in use\n" , |
903 | dev->irq); |
904 | return err; |
905 | } |
906 | |
907 | timer_setup(&priv->timer, NULL, 0); |
908 | timer_setup(&priv->media_timer, tlan_phy_monitor, 0); |
909 | |
910 | tlan_start(dev); |
911 | |
912 | TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Opened. TLAN Chip Rev: %x\n" , |
913 | dev->name, priv->tlan_rev); |
914 | |
915 | return 0; |
916 | |
917 | } |
918 | |
919 | |
920 | |
921 | /************************************************************** |
922 | * tlan_ioctl |
923 | * |
924 | * Returns: |
925 | * 0 on success, error code otherwise |
926 | * Params: |
927 | * dev structure of device to receive ioctl. |
928 | * |
929 | * rq ifreq structure to hold userspace data. |
930 | * |
931 | * cmd ioctl command. |
932 | * |
933 | * |
934 | *************************************************************/ |
935 | |
936 | static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) |
937 | { |
938 | struct tlan_priv *priv = netdev_priv(dev); |
939 | struct mii_ioctl_data *data = if_mii(rq); |
940 | u32 phy = priv->phy[priv->phy_num]; |
941 | |
942 | if (!priv->phy_online) |
943 | return -EAGAIN; |
944 | |
945 | switch (cmd) { |
946 | case SIOCGMIIPHY: /* get address of MII PHY in use. */ |
947 | data->phy_id = phy; |
948 | fallthrough; |
949 | |
950 | |
951 | case SIOCGMIIREG: /* read MII PHY register. */ |
952 | tlan_mii_read_reg(dev, data->phy_id & 0x1f, |
953 | data->reg_num & 0x1f, &data->val_out); |
954 | return 0; |
955 | |
956 | |
957 | case SIOCSMIIREG: /* write MII PHY register. */ |
958 | tlan_mii_write_reg(dev, data->phy_id & 0x1f, |
959 | data->reg_num & 0x1f, data->val_in); |
960 | return 0; |
961 | default: |
962 | return -EOPNOTSUPP; |
963 | } |
964 | } |
965 | |
966 | |
967 | /*************************************************************** |
968 | * tlan_tx_timeout |
969 | * |
970 | * Returns: nothing |
971 | * |
972 | * Params: |
973 | * dev structure of device which timed out |
974 | * during transmit. |
975 | * |
976 | **************************************************************/ |
977 | |
978 | static void tlan_tx_timeout(struct net_device *dev, unsigned int txqueue) |
979 | { |
980 | |
981 | TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Transmit timed out.\n" , dev->name); |
982 | |
983 | /* Ok so we timed out, lets see what we can do about it...*/ |
984 | tlan_free_lists(dev); |
985 | tlan_reset_lists(dev); |
986 | tlan_read_and_clear_stats(dev, TLAN_IGNORE); |
987 | tlan_reset_adapter(dev); |
988 | netif_trans_update(dev); /* prevent tx timeout */ |
989 | netif_wake_queue(dev); |
990 | |
991 | } |
992 | |
993 | |
994 | /*************************************************************** |
995 | * tlan_tx_timeout_work |
996 | * |
997 | * Returns: nothing |
998 | * |
999 | * Params: |
1000 | * work work item of device which timed out |
1001 | * |
1002 | **************************************************************/ |
1003 | |
1004 | static void tlan_tx_timeout_work(struct work_struct *work) |
1005 | { |
1006 | struct tlan_priv *priv = |
1007 | container_of(work, struct tlan_priv, tlan_tqueue); |
1008 | |
1009 | tlan_tx_timeout(dev: priv->dev, UINT_MAX); |
1010 | } |
1011 | |
1012 | |
1013 | |
1014 | /*************************************************************** |
1015 | * tlan_start_tx |
1016 | * |
1017 | * Returns: |
1018 | * 0 on success, non-zero on failure. |
1019 | * Parms: |
1020 | * skb A pointer to the sk_buff containing the |
1021 | * frame to be sent. |
1022 | * dev The device to send the data on. |
1023 | * |
1024 | * This function adds a frame to the Tx list to be sent |
1025 | * ASAP. First it verifies that the adapter is ready and |
1026 | * there is room in the queue. Then it sets up the next |
1027 | * available list, copies the frame to the corresponding |
1028 | * buffer. If the adapter Tx channel is idle, it gives |
1029 | * the adapter a Tx Go command on the list, otherwise it |
1030 | * sets the forward address of the previous list to point |
1031 | * to this one. Then it frees the sk_buff. |
1032 | * |
1033 | **************************************************************/ |
1034 | |
1035 | static netdev_tx_t tlan_start_tx(struct sk_buff *skb, struct net_device *dev) |
1036 | { |
1037 | struct tlan_priv *priv = netdev_priv(dev); |
1038 | dma_addr_t tail_list_phys; |
1039 | struct tlan_list *tail_list; |
1040 | unsigned long flags; |
1041 | unsigned int txlen; |
1042 | |
1043 | if (!priv->phy_online) { |
1044 | TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s PHY is not ready\n" , |
1045 | dev->name); |
1046 | dev_kfree_skb_any(skb); |
1047 | return NETDEV_TX_OK; |
1048 | } |
1049 | |
1050 | if (skb_padto(skb, TLAN_MIN_FRAME_SIZE)) |
1051 | return NETDEV_TX_OK; |
1052 | txlen = max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE); |
1053 | |
1054 | tail_list = priv->tx_list + priv->tx_tail; |
1055 | tail_list_phys = |
1056 | priv->tx_list_dma + sizeof(struct tlan_list)*priv->tx_tail; |
1057 | |
1058 | if (tail_list->c_stat != TLAN_CSTAT_UNUSED) { |
1059 | TLAN_DBG(TLAN_DEBUG_TX, |
1060 | "TRANSMIT: %s is busy (Head=%d Tail=%d)\n" , |
1061 | dev->name, priv->tx_head, priv->tx_tail); |
1062 | netif_stop_queue(dev); |
1063 | priv->tx_busy_count++; |
1064 | return NETDEV_TX_BUSY; |
1065 | } |
1066 | |
1067 | tail_list->forward = 0; |
1068 | |
1069 | tail_list->buffer[0].address = dma_map_single(&priv->pci_dev->dev, |
1070 | skb->data, txlen, |
1071 | DMA_TO_DEVICE); |
1072 | tlan_store_skb(tag: tail_list, skb); |
1073 | |
1074 | tail_list->frame_size = (u16) txlen; |
1075 | tail_list->buffer[0].count = TLAN_LAST_BUFFER | (u32) txlen; |
1076 | tail_list->buffer[1].count = 0; |
1077 | tail_list->buffer[1].address = 0; |
1078 | |
1079 | spin_lock_irqsave(&priv->lock, flags); |
1080 | tail_list->c_stat = TLAN_CSTAT_READY; |
1081 | if (!priv->tx_in_progress) { |
1082 | priv->tx_in_progress = 1; |
1083 | TLAN_DBG(TLAN_DEBUG_TX, |
1084 | "TRANSMIT: Starting TX on buffer %d\n" , |
1085 | priv->tx_tail); |
1086 | outl(value: tail_list_phys, port: dev->base_addr + TLAN_CH_PARM); |
1087 | outl(TLAN_HC_GO, port: dev->base_addr + TLAN_HOST_CMD); |
1088 | } else { |
1089 | TLAN_DBG(TLAN_DEBUG_TX, |
1090 | "TRANSMIT: Adding buffer %d to TX channel\n" , |
1091 | priv->tx_tail); |
1092 | if (priv->tx_tail == 0) { |
1093 | (priv->tx_list + (TLAN_NUM_TX_LISTS - 1))->forward |
1094 | = tail_list_phys; |
1095 | } else { |
1096 | (priv->tx_list + (priv->tx_tail - 1))->forward |
1097 | = tail_list_phys; |
1098 | } |
1099 | } |
1100 | spin_unlock_irqrestore(lock: &priv->lock, flags); |
1101 | |
1102 | CIRC_INC(priv->tx_tail, TLAN_NUM_TX_LISTS); |
1103 | |
1104 | return NETDEV_TX_OK; |
1105 | |
1106 | } |
1107 | |
1108 | |
1109 | |
1110 | |
1111 | /*************************************************************** |
1112 | * tlan_handle_interrupt |
1113 | * |
1114 | * Returns: |
1115 | * Nothing |
1116 | * Parms: |
1117 | * irq The line on which the interrupt |
1118 | * occurred. |
1119 | * dev_id A pointer to the device assigned to |
1120 | * this irq line. |
1121 | * |
1122 | * This function handles an interrupt generated by its |
1123 | * assigned TLAN adapter. The function deactivates |
1124 | * interrupts on its adapter, records the type of |
1125 | * interrupt, executes the appropriate subhandler, and |
1126 | * acknowdges the interrupt to the adapter (thus |
1127 | * re-enabling adapter interrupts. |
1128 | * |
1129 | **************************************************************/ |
1130 | |
1131 | static irqreturn_t tlan_handle_interrupt(int irq, void *dev_id) |
1132 | { |
1133 | struct net_device *dev = dev_id; |
1134 | struct tlan_priv *priv = netdev_priv(dev); |
1135 | u16 host_int; |
1136 | u16 type; |
1137 | |
1138 | spin_lock(lock: &priv->lock); |
1139 | |
1140 | host_int = inw(port: dev->base_addr + TLAN_HOST_INT); |
1141 | type = (host_int & TLAN_HI_IT_MASK) >> 2; |
1142 | if (type) { |
1143 | u32 ack; |
1144 | u32 host_cmd; |
1145 | |
1146 | outw(value: host_int, port: dev->base_addr + TLAN_HOST_INT); |
1147 | ack = tlan_int_vector[type](dev, host_int); |
1148 | |
1149 | if (ack) { |
1150 | host_cmd = TLAN_HC_ACK | ack | (type << 18); |
1151 | outl(value: host_cmd, port: dev->base_addr + TLAN_HOST_CMD); |
1152 | } |
1153 | } |
1154 | |
1155 | spin_unlock(lock: &priv->lock); |
1156 | |
1157 | return IRQ_RETVAL(type); |
1158 | } |
1159 | |
1160 | |
1161 | |
1162 | |
1163 | /*************************************************************** |
1164 | * tlan_close |
1165 | * |
1166 | * Returns: |
1167 | * An error code. |
1168 | * Parms: |
1169 | * dev The device structure of the device to |
1170 | * close. |
1171 | * |
1172 | * This function shuts down the adapter. It records any |
1173 | * stats, puts the adapter into reset state, deactivates |
1174 | * its time as needed, and frees the irq it is using. |
1175 | * |
1176 | **************************************************************/ |
1177 | |
1178 | static int tlan_close(struct net_device *dev) |
1179 | { |
1180 | tlan_stop(dev); |
1181 | |
1182 | free_irq(dev->irq, dev); |
1183 | tlan_free_lists(dev); |
1184 | TLAN_DBG(TLAN_DEBUG_GNRL, "Device %s closed.\n" , dev->name); |
1185 | |
1186 | return 0; |
1187 | |
1188 | } |
1189 | |
1190 | |
1191 | |
1192 | |
1193 | /*************************************************************** |
1194 | * tlan_get_stats |
1195 | * |
1196 | * Returns: |
1197 | * A pointer to the device's statistics structure. |
1198 | * Parms: |
1199 | * dev The device structure to return the |
1200 | * stats for. |
1201 | * |
1202 | * This function updates the devices statistics by reading |
1203 | * the TLAN chip's onboard registers. Then it returns the |
1204 | * address of the statistics structure. |
1205 | * |
1206 | **************************************************************/ |
1207 | |
1208 | static struct net_device_stats *tlan_get_stats(struct net_device *dev) |
1209 | { |
1210 | struct tlan_priv *priv = netdev_priv(dev); |
1211 | int i; |
1212 | |
1213 | /* Should only read stats if open ? */ |
1214 | tlan_read_and_clear_stats(dev, TLAN_RECORD); |
1215 | |
1216 | TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: %s EOC count = %d\n" , dev->name, |
1217 | priv->rx_eoc_count); |
1218 | TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s Busy count = %d\n" , dev->name, |
1219 | priv->tx_busy_count); |
1220 | if (debug & TLAN_DEBUG_GNRL) { |
1221 | tlan_print_dio(dev->base_addr); |
1222 | tlan_phy_print(dev); |
1223 | } |
1224 | if (debug & TLAN_DEBUG_LIST) { |
1225 | for (i = 0; i < TLAN_NUM_RX_LISTS; i++) |
1226 | tlan_print_list(priv->rx_list + i, "RX" , i); |
1227 | for (i = 0; i < TLAN_NUM_TX_LISTS; i++) |
1228 | tlan_print_list(priv->tx_list + i, "TX" , i); |
1229 | } |
1230 | |
1231 | return &dev->stats; |
1232 | |
1233 | } |
1234 | |
1235 | |
1236 | |
1237 | |
1238 | /*************************************************************** |
1239 | * tlan_set_multicast_list |
1240 | * |
1241 | * Returns: |
1242 | * Nothing |
1243 | * Parms: |
1244 | * dev The device structure to set the |
1245 | * multicast list for. |
1246 | * |
1247 | * This function sets the TLAN adaptor to various receive |
1248 | * modes. If the IFF_PROMISC flag is set, promiscuous |
1249 | * mode is acitviated. Otherwise, promiscuous mode is |
1250 | * turned off. If the IFF_ALLMULTI flag is set, then |
1251 | * the hash table is set to receive all group addresses. |
1252 | * Otherwise, the first three multicast addresses are |
1253 | * stored in AREG_1-3, and the rest are selected via the |
1254 | * hash table, as necessary. |
1255 | * |
1256 | **************************************************************/ |
1257 | |
1258 | static void tlan_set_multicast_list(struct net_device *dev) |
1259 | { |
1260 | struct netdev_hw_addr *ha; |
1261 | u32 hash1 = 0; |
1262 | u32 hash2 = 0; |
1263 | int i; |
1264 | u32 offset; |
1265 | u8 tmp; |
1266 | |
1267 | if (dev->flags & IFF_PROMISC) { |
1268 | tmp = tlan_dio_read8(base_addr: dev->base_addr, TLAN_NET_CMD); |
1269 | tlan_dio_write8(base_addr: dev->base_addr, |
1270 | TLAN_NET_CMD, data: tmp | TLAN_NET_CMD_CAF); |
1271 | } else { |
1272 | tmp = tlan_dio_read8(base_addr: dev->base_addr, TLAN_NET_CMD); |
1273 | tlan_dio_write8(base_addr: dev->base_addr, |
1274 | TLAN_NET_CMD, data: tmp & ~TLAN_NET_CMD_CAF); |
1275 | if (dev->flags & IFF_ALLMULTI) { |
1276 | for (i = 0; i < 3; i++) |
1277 | tlan_set_mac(dev, areg: i + 1, NULL); |
1278 | tlan_dio_write32(base_addr: dev->base_addr, TLAN_HASH_1, |
1279 | data: 0xffffffff); |
1280 | tlan_dio_write32(base_addr: dev->base_addr, TLAN_HASH_2, |
1281 | data: 0xffffffff); |
1282 | } else { |
1283 | i = 0; |
1284 | netdev_for_each_mc_addr(ha, dev) { |
1285 | if (i < 3) { |
1286 | tlan_set_mac(dev, areg: i + 1, |
1287 | mac: (char *) &ha->addr); |
1288 | } else { |
1289 | offset = |
1290 | tlan_hash_func(a: (u8 *)&ha->addr); |
1291 | if (offset < 32) |
1292 | hash1 |= (1 << offset); |
1293 | else |
1294 | hash2 |= (1 << (offset - 32)); |
1295 | } |
1296 | i++; |
1297 | } |
1298 | for ( ; i < 3; i++) |
1299 | tlan_set_mac(dev, areg: i + 1, NULL); |
1300 | tlan_dio_write32(base_addr: dev->base_addr, TLAN_HASH_1, data: hash1); |
1301 | tlan_dio_write32(base_addr: dev->base_addr, TLAN_HASH_2, data: hash2); |
1302 | } |
1303 | } |
1304 | |
1305 | } |
1306 | |
1307 | |
1308 | |
1309 | /***************************************************************************** |
1310 | ****************************************************************************** |
1311 | |
1312 | ThunderLAN driver interrupt vectors and table |
1313 | |
1314 | please see chap. 4, "Interrupt Handling" of the "ThunderLAN |
1315 | Programmer's Guide" for more informations on handling interrupts |
1316 | generated by TLAN based adapters. |
1317 | |
1318 | ****************************************************************************** |
1319 | *****************************************************************************/ |
1320 | |
1321 | |
1322 | |
1323 | |
1324 | /*************************************************************** |
1325 | * tlan_handle_tx_eof |
1326 | * |
1327 | * Returns: |
1328 | * 1 |
1329 | * Parms: |
1330 | * dev Device assigned the IRQ that was |
1331 | * raised. |
1332 | * host_int The contents of the HOST_INT |
1333 | * port. |
1334 | * |
1335 | * This function handles Tx EOF interrupts which are raised |
1336 | * by the adapter when it has completed sending the |
1337 | * contents of a buffer. If detemines which list/buffer |
1338 | * was completed and resets it. If the buffer was the last |
1339 | * in the channel (EOC), then the function checks to see if |
1340 | * another buffer is ready to send, and if so, sends a Tx |
1341 | * Go command. Finally, the driver activates/continues the |
1342 | * activity LED. |
1343 | * |
1344 | **************************************************************/ |
1345 | |
1346 | static u32 tlan_handle_tx_eof(struct net_device *dev, u16 host_int) |
1347 | { |
1348 | struct tlan_priv *priv = netdev_priv(dev); |
1349 | int eoc = 0; |
1350 | struct tlan_list *head_list; |
1351 | dma_addr_t head_list_phys; |
1352 | u32 ack = 0; |
1353 | u16 tmp_c_stat; |
1354 | |
1355 | TLAN_DBG(TLAN_DEBUG_TX, |
1356 | "TRANSMIT: Handling TX EOF (Head=%d Tail=%d)\n" , |
1357 | priv->tx_head, priv->tx_tail); |
1358 | head_list = priv->tx_list + priv->tx_head; |
1359 | |
1360 | while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP) |
1361 | && (ack < 255)) { |
1362 | struct sk_buff *skb = tlan_get_skb(tag: head_list); |
1363 | |
1364 | ack++; |
1365 | dma_unmap_single(&priv->pci_dev->dev, |
1366 | head_list->buffer[0].address, |
1367 | max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE), |
1368 | DMA_TO_DEVICE); |
1369 | dev_kfree_skb_any(skb); |
1370 | head_list->buffer[8].address = 0; |
1371 | head_list->buffer[9].address = 0; |
1372 | |
1373 | if (tmp_c_stat & TLAN_CSTAT_EOC) |
1374 | eoc = 1; |
1375 | |
1376 | dev->stats.tx_bytes += head_list->frame_size; |
1377 | |
1378 | head_list->c_stat = TLAN_CSTAT_UNUSED; |
1379 | netif_start_queue(dev); |
1380 | CIRC_INC(priv->tx_head, TLAN_NUM_TX_LISTS); |
1381 | head_list = priv->tx_list + priv->tx_head; |
1382 | } |
1383 | |
1384 | if (!ack) |
1385 | netdev_info(dev, |
1386 | format: "Received interrupt for uncompleted TX frame\n" ); |
1387 | |
1388 | if (eoc) { |
1389 | TLAN_DBG(TLAN_DEBUG_TX, |
1390 | "TRANSMIT: handling TX EOC (Head=%d Tail=%d)\n" , |
1391 | priv->tx_head, priv->tx_tail); |
1392 | head_list = priv->tx_list + priv->tx_head; |
1393 | head_list_phys = priv->tx_list_dma |
1394 | + sizeof(struct tlan_list)*priv->tx_head; |
1395 | if ((head_list->c_stat & TLAN_CSTAT_READY) |
1396 | == TLAN_CSTAT_READY) { |
1397 | outl(value: head_list_phys, port: dev->base_addr + TLAN_CH_PARM); |
1398 | ack |= TLAN_HC_GO; |
1399 | } else { |
1400 | priv->tx_in_progress = 0; |
1401 | } |
1402 | } |
1403 | |
1404 | if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) { |
1405 | tlan_dio_write8(base_addr: dev->base_addr, |
1406 | TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT); |
1407 | if (priv->timer.function == NULL) { |
1408 | priv->timer.function = tlan_timer; |
1409 | priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY; |
1410 | priv->timer_set_at = jiffies; |
1411 | priv->timer_type = TLAN_TIMER_ACTIVITY; |
1412 | add_timer(timer: &priv->timer); |
1413 | } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) { |
1414 | priv->timer_set_at = jiffies; |
1415 | } |
1416 | } |
1417 | |
1418 | return ack; |
1419 | |
1420 | } |
1421 | |
1422 | |
1423 | |
1424 | |
1425 | /*************************************************************** |
1426 | * TLan_HandleStatOverflow |
1427 | * |
1428 | * Returns: |
1429 | * 1 |
1430 | * Parms: |
1431 | * dev Device assigned the IRQ that was |
1432 | * raised. |
1433 | * host_int The contents of the HOST_INT |
1434 | * port. |
1435 | * |
1436 | * This function handles the Statistics Overflow interrupt |
1437 | * which means that one or more of the TLAN statistics |
1438 | * registers has reached 1/2 capacity and needs to be read. |
1439 | * |
1440 | **************************************************************/ |
1441 | |
1442 | static u32 tlan_handle_stat_overflow(struct net_device *dev, u16 host_int) |
1443 | { |
1444 | tlan_read_and_clear_stats(dev, TLAN_RECORD); |
1445 | |
1446 | return 1; |
1447 | |
1448 | } |
1449 | |
1450 | |
1451 | |
1452 | |
1453 | /*************************************************************** |
1454 | * TLan_HandleRxEOF |
1455 | * |
1456 | * Returns: |
1457 | * 1 |
1458 | * Parms: |
1459 | * dev Device assigned the IRQ that was |
1460 | * raised. |
1461 | * host_int The contents of the HOST_INT |
1462 | * port. |
1463 | * |
1464 | * This function handles the Rx EOF interrupt which |
1465 | * indicates a frame has been received by the adapter from |
1466 | * the net and the frame has been transferred to memory. |
1467 | * The function determines the bounce buffer the frame has |
1468 | * been loaded into, creates a new sk_buff big enough to |
1469 | * hold the frame, and sends it to protocol stack. It |
1470 | * then resets the used buffer and appends it to the end |
1471 | * of the list. If the frame was the last in the Rx |
1472 | * channel (EOC), the function restarts the receive channel |
1473 | * by sending an Rx Go command to the adapter. Then it |
1474 | * activates/continues the activity LED. |
1475 | * |
1476 | **************************************************************/ |
1477 | |
1478 | static u32 tlan_handle_rx_eof(struct net_device *dev, u16 host_int) |
1479 | { |
1480 | struct tlan_priv *priv = netdev_priv(dev); |
1481 | u32 ack = 0; |
1482 | int eoc = 0; |
1483 | struct tlan_list *head_list; |
1484 | struct sk_buff *skb; |
1485 | struct tlan_list *tail_list; |
1486 | u16 tmp_c_stat; |
1487 | dma_addr_t head_list_phys; |
1488 | |
1489 | TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: handling RX EOF (Head=%d Tail=%d)\n" , |
1490 | priv->rx_head, priv->rx_tail); |
1491 | head_list = priv->rx_list + priv->rx_head; |
1492 | head_list_phys = |
1493 | priv->rx_list_dma + sizeof(struct tlan_list)*priv->rx_head; |
1494 | |
1495 | while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP) |
1496 | && (ack < 255)) { |
1497 | dma_addr_t frame_dma = head_list->buffer[0].address; |
1498 | u32 frame_size = head_list->frame_size; |
1499 | struct sk_buff *new_skb; |
1500 | |
1501 | ack++; |
1502 | if (tmp_c_stat & TLAN_CSTAT_EOC) |
1503 | eoc = 1; |
1504 | |
1505 | new_skb = netdev_alloc_skb_ip_align(dev, |
1506 | TLAN_MAX_FRAME_SIZE + 5); |
1507 | if (!new_skb) |
1508 | goto drop_and_reuse; |
1509 | |
1510 | skb = tlan_get_skb(tag: head_list); |
1511 | dma_unmap_single(&priv->pci_dev->dev, frame_dma, |
1512 | TLAN_MAX_FRAME_SIZE, DMA_FROM_DEVICE); |
1513 | skb_put(skb, len: frame_size); |
1514 | |
1515 | dev->stats.rx_bytes += frame_size; |
1516 | |
1517 | skb->protocol = eth_type_trans(skb, dev); |
1518 | netif_rx(skb); |
1519 | |
1520 | head_list->buffer[0].address = |
1521 | dma_map_single(&priv->pci_dev->dev, new_skb->data, |
1522 | TLAN_MAX_FRAME_SIZE, DMA_FROM_DEVICE); |
1523 | |
1524 | tlan_store_skb(tag: head_list, skb: new_skb); |
1525 | drop_and_reuse: |
1526 | head_list->forward = 0; |
1527 | head_list->c_stat = 0; |
1528 | tail_list = priv->rx_list + priv->rx_tail; |
1529 | tail_list->forward = head_list_phys; |
1530 | |
1531 | CIRC_INC(priv->rx_head, TLAN_NUM_RX_LISTS); |
1532 | CIRC_INC(priv->rx_tail, TLAN_NUM_RX_LISTS); |
1533 | head_list = priv->rx_list + priv->rx_head; |
1534 | head_list_phys = priv->rx_list_dma |
1535 | + sizeof(struct tlan_list)*priv->rx_head; |
1536 | } |
1537 | |
1538 | if (!ack) |
1539 | netdev_info(dev, |
1540 | format: "Received interrupt for uncompleted RX frame\n" ); |
1541 | |
1542 | |
1543 | if (eoc) { |
1544 | TLAN_DBG(TLAN_DEBUG_RX, |
1545 | "RECEIVE: handling RX EOC (Head=%d Tail=%d)\n" , |
1546 | priv->rx_head, priv->rx_tail); |
1547 | head_list = priv->rx_list + priv->rx_head; |
1548 | head_list_phys = priv->rx_list_dma |
1549 | + sizeof(struct tlan_list)*priv->rx_head; |
1550 | outl(value: head_list_phys, port: dev->base_addr + TLAN_CH_PARM); |
1551 | ack |= TLAN_HC_GO | TLAN_HC_RT; |
1552 | priv->rx_eoc_count++; |
1553 | } |
1554 | |
1555 | if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) { |
1556 | tlan_dio_write8(base_addr: dev->base_addr, |
1557 | TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT); |
1558 | if (priv->timer.function == NULL) { |
1559 | priv->timer.function = tlan_timer; |
1560 | priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY; |
1561 | priv->timer_set_at = jiffies; |
1562 | priv->timer_type = TLAN_TIMER_ACTIVITY; |
1563 | add_timer(timer: &priv->timer); |
1564 | } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) { |
1565 | priv->timer_set_at = jiffies; |
1566 | } |
1567 | } |
1568 | |
1569 | return ack; |
1570 | |
1571 | } |
1572 | |
1573 | |
1574 | |
1575 | |
1576 | /*************************************************************** |
1577 | * tlan_handle_dummy |
1578 | * |
1579 | * Returns: |
1580 | * 1 |
1581 | * Parms: |
1582 | * dev Device assigned the IRQ that was |
1583 | * raised. |
1584 | * host_int The contents of the HOST_INT |
1585 | * port. |
1586 | * |
1587 | * This function handles the Dummy interrupt, which is |
1588 | * raised whenever a test interrupt is generated by setting |
1589 | * the Req_Int bit of HOST_CMD to 1. |
1590 | * |
1591 | **************************************************************/ |
1592 | |
1593 | static u32 tlan_handle_dummy(struct net_device *dev, u16 host_int) |
1594 | { |
1595 | netdev_info(dev, format: "Test interrupt\n" ); |
1596 | return 1; |
1597 | |
1598 | } |
1599 | |
1600 | |
1601 | |
1602 | |
1603 | /*************************************************************** |
1604 | * tlan_handle_tx_eoc |
1605 | * |
1606 | * Returns: |
1607 | * 1 |
1608 | * Parms: |
1609 | * dev Device assigned the IRQ that was |
1610 | * raised. |
1611 | * host_int The contents of the HOST_INT |
1612 | * port. |
1613 | * |
1614 | * This driver is structured to determine EOC occurrences by |
1615 | * reading the CSTAT member of the list structure. Tx EOC |
1616 | * interrupts are disabled via the DIO INTDIS register. |
1617 | * However, TLAN chips before revision 3.0 didn't have this |
1618 | * functionality, so process EOC events if this is the |
1619 | * case. |
1620 | * |
1621 | **************************************************************/ |
1622 | |
1623 | static u32 tlan_handle_tx_eoc(struct net_device *dev, u16 host_int) |
1624 | { |
1625 | struct tlan_priv *priv = netdev_priv(dev); |
1626 | struct tlan_list *head_list; |
1627 | dma_addr_t head_list_phys; |
1628 | u32 ack = 1; |
1629 | |
1630 | if (priv->tlan_rev < 0x30) { |
1631 | TLAN_DBG(TLAN_DEBUG_TX, |
1632 | "TRANSMIT: handling TX EOC (Head=%d Tail=%d) -- IRQ\n" , |
1633 | priv->tx_head, priv->tx_tail); |
1634 | head_list = priv->tx_list + priv->tx_head; |
1635 | head_list_phys = priv->tx_list_dma |
1636 | + sizeof(struct tlan_list)*priv->tx_head; |
1637 | if ((head_list->c_stat & TLAN_CSTAT_READY) |
1638 | == TLAN_CSTAT_READY) { |
1639 | netif_stop_queue(dev); |
1640 | outl(value: head_list_phys, port: dev->base_addr + TLAN_CH_PARM); |
1641 | ack |= TLAN_HC_GO; |
1642 | } else { |
1643 | priv->tx_in_progress = 0; |
1644 | } |
1645 | } |
1646 | |
1647 | return ack; |
1648 | |
1649 | } |
1650 | |
1651 | |
1652 | |
1653 | |
1654 | /*************************************************************** |
1655 | * tlan_handle_status_check |
1656 | * |
1657 | * Returns: |
1658 | * 0 if Adapter check, 1 if Network Status check. |
1659 | * Parms: |
1660 | * dev Device assigned the IRQ that was |
1661 | * raised. |
1662 | * host_int The contents of the HOST_INT |
1663 | * port. |
1664 | * |
1665 | * This function handles Adapter Check/Network Status |
1666 | * interrupts generated by the adapter. It checks the |
1667 | * vector in the HOST_INT register to determine if it is |
1668 | * an Adapter Check interrupt. If so, it resets the |
1669 | * adapter. Otherwise it clears the status registers |
1670 | * and services the PHY. |
1671 | * |
1672 | **************************************************************/ |
1673 | |
1674 | static u32 tlan_handle_status_check(struct net_device *dev, u16 host_int) |
1675 | { |
1676 | struct tlan_priv *priv = netdev_priv(dev); |
1677 | u32 ack; |
1678 | u32 error; |
1679 | u8 net_sts; |
1680 | u32 phy; |
1681 | u16 tlphy_ctl; |
1682 | u16 tlphy_sts; |
1683 | |
1684 | ack = 1; |
1685 | if (host_int & TLAN_HI_IV_MASK) { |
1686 | netif_stop_queue(dev); |
1687 | error = inl(port: dev->base_addr + TLAN_CH_PARM); |
1688 | netdev_info(dev, format: "Adaptor Error = 0x%x\n" , error); |
1689 | tlan_read_and_clear_stats(dev, TLAN_RECORD); |
1690 | outl(TLAN_HC_AD_RST, port: dev->base_addr + TLAN_HOST_CMD); |
1691 | |
1692 | schedule_work(work: &priv->tlan_tqueue); |
1693 | |
1694 | netif_wake_queue(dev); |
1695 | ack = 0; |
1696 | } else { |
1697 | TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Status Check\n" , dev->name); |
1698 | phy = priv->phy[priv->phy_num]; |
1699 | |
1700 | net_sts = tlan_dio_read8(base_addr: dev->base_addr, TLAN_NET_STS); |
1701 | if (net_sts) { |
1702 | tlan_dio_write8(base_addr: dev->base_addr, TLAN_NET_STS, data: net_sts); |
1703 | TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Net_Sts = %x\n" , |
1704 | dev->name, (unsigned) net_sts); |
1705 | } |
1706 | if ((net_sts & TLAN_NET_STS_MIRQ) && (priv->phy_num == 0)) { |
1707 | __tlan_mii_read_reg(dev, phy, TLAN_TLPHY_STS, &tlphy_sts); |
1708 | __tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl); |
1709 | if (!(tlphy_sts & TLAN_TS_POLOK) && |
1710 | !(tlphy_ctl & TLAN_TC_SWAPOL)) { |
1711 | tlphy_ctl |= TLAN_TC_SWAPOL; |
1712 | __tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, |
1713 | tlphy_ctl); |
1714 | } else if ((tlphy_sts & TLAN_TS_POLOK) && |
1715 | (tlphy_ctl & TLAN_TC_SWAPOL)) { |
1716 | tlphy_ctl &= ~TLAN_TC_SWAPOL; |
1717 | __tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, |
1718 | tlphy_ctl); |
1719 | } |
1720 | |
1721 | if (debug) |
1722 | __tlan_phy_print(dev); |
1723 | } |
1724 | } |
1725 | |
1726 | return ack; |
1727 | |
1728 | } |
1729 | |
1730 | |
1731 | |
1732 | |
1733 | /*************************************************************** |
1734 | * tlan_handle_rx_eoc |
1735 | * |
1736 | * Returns: |
1737 | * 1 |
1738 | * Parms: |
1739 | * dev Device assigned the IRQ that was |
1740 | * raised. |
1741 | * host_int The contents of the HOST_INT |
1742 | * port. |
1743 | * |
1744 | * This driver is structured to determine EOC occurrences by |
1745 | * reading the CSTAT member of the list structure. Rx EOC |
1746 | * interrupts are disabled via the DIO INTDIS register. |
1747 | * However, TLAN chips before revision 3.0 didn't have this |
1748 | * CSTAT member or a INTDIS register, so if this chip is |
1749 | * pre-3.0, process EOC interrupts normally. |
1750 | * |
1751 | **************************************************************/ |
1752 | |
1753 | static u32 tlan_handle_rx_eoc(struct net_device *dev, u16 host_int) |
1754 | { |
1755 | struct tlan_priv *priv = netdev_priv(dev); |
1756 | dma_addr_t head_list_phys; |
1757 | u32 ack = 1; |
1758 | |
1759 | if (priv->tlan_rev < 0x30) { |
1760 | TLAN_DBG(TLAN_DEBUG_RX, |
1761 | "RECEIVE: Handling RX EOC (head=%d tail=%d) -- IRQ\n" , |
1762 | priv->rx_head, priv->rx_tail); |
1763 | head_list_phys = priv->rx_list_dma |
1764 | + sizeof(struct tlan_list)*priv->rx_head; |
1765 | outl(value: head_list_phys, port: dev->base_addr + TLAN_CH_PARM); |
1766 | ack |= TLAN_HC_GO | TLAN_HC_RT; |
1767 | priv->rx_eoc_count++; |
1768 | } |
1769 | |
1770 | return ack; |
1771 | |
1772 | } |
1773 | |
1774 | |
1775 | |
1776 | |
1777 | /***************************************************************************** |
1778 | ****************************************************************************** |
1779 | |
1780 | ThunderLAN driver timer function |
1781 | |
1782 | ****************************************************************************** |
1783 | *****************************************************************************/ |
1784 | |
1785 | |
1786 | /*************************************************************** |
1787 | * tlan_timer |
1788 | * |
1789 | * Returns: |
1790 | * Nothing |
1791 | * Parms: |
1792 | * data A value given to add timer when |
1793 | * add_timer was called. |
1794 | * |
1795 | * This function handles timed functionality for the |
1796 | * TLAN driver. The two current timer uses are for |
1797 | * delaying for autonegotionation and driving the ACT LED. |
1798 | * - Autonegotiation requires being allowed about |
1799 | * 2 1/2 seconds before attempting to transmit a |
1800 | * packet. It would be a very bad thing to hang |
1801 | * the kernel this long, so the driver doesn't |
1802 | * allow transmission 'til after this time, for |
1803 | * certain PHYs. It would be much nicer if all |
1804 | * PHYs were interrupt-capable like the internal |
1805 | * PHY. |
1806 | * - The ACT LED, which shows adapter activity, is |
1807 | * driven by the driver, and so must be left on |
1808 | * for a short period to power up the LED so it |
1809 | * can be seen. This delay can be changed by |
1810 | * changing the TLAN_TIMER_ACT_DELAY in tlan.h, |
1811 | * if desired. 100 ms produces a slightly |
1812 | * sluggish response. |
1813 | * |
1814 | **************************************************************/ |
1815 | |
1816 | static void tlan_timer(struct timer_list *t) |
1817 | { |
1818 | struct tlan_priv *priv = from_timer(priv, t, timer); |
1819 | struct net_device *dev = priv->dev; |
1820 | u32 elapsed; |
1821 | unsigned long flags = 0; |
1822 | |
1823 | priv->timer.function = NULL; |
1824 | |
1825 | switch (priv->timer_type) { |
1826 | case TLAN_TIMER_PHY_PDOWN: |
1827 | tlan_phy_power_down(dev); |
1828 | break; |
1829 | case TLAN_TIMER_PHY_PUP: |
1830 | tlan_phy_power_up(dev); |
1831 | break; |
1832 | case TLAN_TIMER_PHY_RESET: |
1833 | tlan_phy_reset(dev); |
1834 | break; |
1835 | case TLAN_TIMER_PHY_START_LINK: |
1836 | tlan_phy_start_link(dev); |
1837 | break; |
1838 | case TLAN_TIMER_PHY_FINISH_AN: |
1839 | tlan_phy_finish_auto_neg(dev); |
1840 | break; |
1841 | case TLAN_TIMER_FINISH_RESET: |
1842 | tlan_finish_reset(dev); |
1843 | break; |
1844 | case TLAN_TIMER_ACTIVITY: |
1845 | spin_lock_irqsave(&priv->lock, flags); |
1846 | if (priv->timer.function == NULL) { |
1847 | elapsed = jiffies - priv->timer_set_at; |
1848 | if (elapsed >= TLAN_TIMER_ACT_DELAY) { |
1849 | tlan_dio_write8(base_addr: dev->base_addr, |
1850 | TLAN_LED_REG, TLAN_LED_LINK); |
1851 | } else { |
1852 | priv->timer.expires = priv->timer_set_at |
1853 | + TLAN_TIMER_ACT_DELAY; |
1854 | spin_unlock_irqrestore(lock: &priv->lock, flags); |
1855 | add_timer(timer: &priv->timer); |
1856 | break; |
1857 | } |
1858 | } |
1859 | spin_unlock_irqrestore(lock: &priv->lock, flags); |
1860 | break; |
1861 | default: |
1862 | break; |
1863 | } |
1864 | |
1865 | } |
1866 | |
1867 | |
1868 | /***************************************************************************** |
1869 | ****************************************************************************** |
1870 | |
1871 | ThunderLAN driver adapter related routines |
1872 | |
1873 | ****************************************************************************** |
1874 | *****************************************************************************/ |
1875 | |
1876 | |
1877 | /*************************************************************** |
1878 | * tlan_reset_lists |
1879 | * |
1880 | * Returns: |
1881 | * Nothing |
1882 | * Parms: |
1883 | * dev The device structure with the list |
1884 | * structures to be reset. |
1885 | * |
1886 | * This routine sets the variables associated with managing |
1887 | * the TLAN lists to their initial values. |
1888 | * |
1889 | **************************************************************/ |
1890 | |
1891 | static void tlan_reset_lists(struct net_device *dev) |
1892 | { |
1893 | struct tlan_priv *priv = netdev_priv(dev); |
1894 | int i; |
1895 | struct tlan_list *list; |
1896 | dma_addr_t list_phys; |
1897 | struct sk_buff *skb; |
1898 | |
1899 | priv->tx_head = 0; |
1900 | priv->tx_tail = 0; |
1901 | for (i = 0; i < TLAN_NUM_TX_LISTS; i++) { |
1902 | list = priv->tx_list + i; |
1903 | list->c_stat = TLAN_CSTAT_UNUSED; |
1904 | list->buffer[0].address = 0; |
1905 | list->buffer[2].count = 0; |
1906 | list->buffer[2].address = 0; |
1907 | list->buffer[8].address = 0; |
1908 | list->buffer[9].address = 0; |
1909 | } |
1910 | |
1911 | priv->rx_head = 0; |
1912 | priv->rx_tail = TLAN_NUM_RX_LISTS - 1; |
1913 | for (i = 0; i < TLAN_NUM_RX_LISTS; i++) { |
1914 | list = priv->rx_list + i; |
1915 | list_phys = priv->rx_list_dma + sizeof(struct tlan_list)*i; |
1916 | list->c_stat = TLAN_CSTAT_READY; |
1917 | list->frame_size = TLAN_MAX_FRAME_SIZE; |
1918 | list->buffer[0].count = TLAN_MAX_FRAME_SIZE | TLAN_LAST_BUFFER; |
1919 | skb = netdev_alloc_skb_ip_align(dev, TLAN_MAX_FRAME_SIZE + 5); |
1920 | if (!skb) |
1921 | break; |
1922 | |
1923 | list->buffer[0].address = dma_map_single(&priv->pci_dev->dev, |
1924 | skb->data, |
1925 | TLAN_MAX_FRAME_SIZE, |
1926 | DMA_FROM_DEVICE); |
1927 | tlan_store_skb(tag: list, skb); |
1928 | list->buffer[1].count = 0; |
1929 | list->buffer[1].address = 0; |
1930 | list->forward = list_phys + sizeof(struct tlan_list); |
1931 | } |
1932 | |
1933 | /* in case ran out of memory early, clear bits */ |
1934 | while (i < TLAN_NUM_RX_LISTS) { |
1935 | tlan_store_skb(tag: priv->rx_list + i, NULL); |
1936 | ++i; |
1937 | } |
1938 | list->forward = 0; |
1939 | |
1940 | } |
1941 | |
1942 | |
1943 | static void tlan_free_lists(struct net_device *dev) |
1944 | { |
1945 | struct tlan_priv *priv = netdev_priv(dev); |
1946 | int i; |
1947 | struct tlan_list *list; |
1948 | struct sk_buff *skb; |
1949 | |
1950 | for (i = 0; i < TLAN_NUM_TX_LISTS; i++) { |
1951 | list = priv->tx_list + i; |
1952 | skb = tlan_get_skb(tag: list); |
1953 | if (skb) { |
1954 | dma_unmap_single(&priv->pci_dev->dev, |
1955 | list->buffer[0].address, |
1956 | max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE), |
1957 | DMA_TO_DEVICE); |
1958 | dev_kfree_skb_any(skb); |
1959 | list->buffer[8].address = 0; |
1960 | list->buffer[9].address = 0; |
1961 | } |
1962 | } |
1963 | |
1964 | for (i = 0; i < TLAN_NUM_RX_LISTS; i++) { |
1965 | list = priv->rx_list + i; |
1966 | skb = tlan_get_skb(tag: list); |
1967 | if (skb) { |
1968 | dma_unmap_single(&priv->pci_dev->dev, |
1969 | list->buffer[0].address, |
1970 | TLAN_MAX_FRAME_SIZE, DMA_FROM_DEVICE); |
1971 | dev_kfree_skb_any(skb); |
1972 | list->buffer[8].address = 0; |
1973 | list->buffer[9].address = 0; |
1974 | } |
1975 | } |
1976 | } |
1977 | |
1978 | |
1979 | |
1980 | |
1981 | /*************************************************************** |
1982 | * tlan_print_dio |
1983 | * |
1984 | * Returns: |
1985 | * Nothing |
1986 | * Parms: |
1987 | * io_base Base IO port of the device of |
1988 | * which to print DIO registers. |
1989 | * |
1990 | * This function prints out all the internal (DIO) |
1991 | * registers of a TLAN chip. |
1992 | * |
1993 | **************************************************************/ |
1994 | |
1995 | static void tlan_print_dio(u16 io_base) |
1996 | { |
1997 | u32 data0, data1; |
1998 | int i; |
1999 | |
2000 | pr_info("Contents of internal registers for io base 0x%04hx\n" , |
2001 | io_base); |
2002 | pr_info("Off. +0 +4\n" ); |
2003 | for (i = 0; i < 0x4C; i += 8) { |
2004 | data0 = tlan_dio_read32(base_addr: io_base, internal_addr: i); |
2005 | data1 = tlan_dio_read32(base_addr: io_base, internal_addr: i + 0x4); |
2006 | pr_info("0x%02x 0x%08x 0x%08x\n" , i, data0, data1); |
2007 | } |
2008 | |
2009 | } |
2010 | |
2011 | |
2012 | |
2013 | |
2014 | /*************************************************************** |
2015 | * TLan_PrintList |
2016 | * |
2017 | * Returns: |
2018 | * Nothing |
2019 | * Parms: |
2020 | * list A pointer to the struct tlan_list structure to |
2021 | * be printed. |
2022 | * type A string to designate type of list, |
2023 | * "Rx" or "Tx". |
2024 | * num The index of the list. |
2025 | * |
2026 | * This function prints out the contents of the list |
2027 | * pointed to by the list parameter. |
2028 | * |
2029 | **************************************************************/ |
2030 | |
2031 | static void tlan_print_list(struct tlan_list *list, char *type, int num) |
2032 | { |
2033 | int i; |
2034 | |
2035 | pr_info("%s List %d at %p\n" , type, num, list); |
2036 | pr_info(" Forward = 0x%08x\n" , list->forward); |
2037 | pr_info(" CSTAT = 0x%04hx\n" , list->c_stat); |
2038 | pr_info(" Frame Size = 0x%04hx\n" , list->frame_size); |
2039 | /* for (i = 0; i < 10; i++) { */ |
2040 | for (i = 0; i < 2; i++) { |
2041 | pr_info(" Buffer[%d].count, addr = 0x%08x, 0x%08x\n" , |
2042 | i, list->buffer[i].count, list->buffer[i].address); |
2043 | } |
2044 | |
2045 | } |
2046 | |
2047 | |
2048 | |
2049 | |
2050 | /*************************************************************** |
2051 | * tlan_read_and_clear_stats |
2052 | * |
2053 | * Returns: |
2054 | * Nothing |
2055 | * Parms: |
2056 | * dev Pointer to device structure of adapter |
2057 | * to which to read stats. |
2058 | * record Flag indicating whether to add |
2059 | * |
2060 | * This functions reads all the internal status registers |
2061 | * of the TLAN chip, which clears them as a side effect. |
2062 | * It then either adds the values to the device's status |
2063 | * struct, or discards them, depending on whether record |
2064 | * is TLAN_RECORD (!=0) or TLAN_IGNORE (==0). |
2065 | * |
2066 | **************************************************************/ |
2067 | |
2068 | static void tlan_read_and_clear_stats(struct net_device *dev, int record) |
2069 | { |
2070 | u32 tx_good, tx_under; |
2071 | u32 rx_good, rx_over; |
2072 | u32 def_tx, crc, code; |
2073 | u32 multi_col, single_col; |
2074 | u32 excess_col, late_col, loss; |
2075 | |
2076 | outw(TLAN_GOOD_TX_FRMS, port: dev->base_addr + TLAN_DIO_ADR); |
2077 | tx_good = inb(port: dev->base_addr + TLAN_DIO_DATA); |
2078 | tx_good += inb(port: dev->base_addr + TLAN_DIO_DATA + 1) << 8; |
2079 | tx_good += inb(port: dev->base_addr + TLAN_DIO_DATA + 2) << 16; |
2080 | tx_under = inb(port: dev->base_addr + TLAN_DIO_DATA + 3); |
2081 | |
2082 | outw(TLAN_GOOD_RX_FRMS, port: dev->base_addr + TLAN_DIO_ADR); |
2083 | rx_good = inb(port: dev->base_addr + TLAN_DIO_DATA); |
2084 | rx_good += inb(port: dev->base_addr + TLAN_DIO_DATA + 1) << 8; |
2085 | rx_good += inb(port: dev->base_addr + TLAN_DIO_DATA + 2) << 16; |
2086 | rx_over = inb(port: dev->base_addr + TLAN_DIO_DATA + 3); |
2087 | |
2088 | outw(TLAN_DEFERRED_TX, port: dev->base_addr + TLAN_DIO_ADR); |
2089 | def_tx = inb(port: dev->base_addr + TLAN_DIO_DATA); |
2090 | def_tx += inb(port: dev->base_addr + TLAN_DIO_DATA + 1) << 8; |
2091 | crc = inb(port: dev->base_addr + TLAN_DIO_DATA + 2); |
2092 | code = inb(port: dev->base_addr + TLAN_DIO_DATA + 3); |
2093 | |
2094 | outw(TLAN_MULTICOL_FRMS, port: dev->base_addr + TLAN_DIO_ADR); |
2095 | multi_col = inb(port: dev->base_addr + TLAN_DIO_DATA); |
2096 | multi_col += inb(port: dev->base_addr + TLAN_DIO_DATA + 1) << 8; |
2097 | single_col = inb(port: dev->base_addr + TLAN_DIO_DATA + 2); |
2098 | single_col += inb(port: dev->base_addr + TLAN_DIO_DATA + 3) << 8; |
2099 | |
2100 | outw(TLAN_EXCESSCOL_FRMS, port: dev->base_addr + TLAN_DIO_ADR); |
2101 | excess_col = inb(port: dev->base_addr + TLAN_DIO_DATA); |
2102 | late_col = inb(port: dev->base_addr + TLAN_DIO_DATA + 1); |
2103 | loss = inb(port: dev->base_addr + TLAN_DIO_DATA + 2); |
2104 | |
2105 | if (record) { |
2106 | dev->stats.rx_packets += rx_good; |
2107 | dev->stats.rx_errors += rx_over + crc + code; |
2108 | dev->stats.tx_packets += tx_good; |
2109 | dev->stats.tx_errors += tx_under + loss; |
2110 | dev->stats.collisions += multi_col |
2111 | + single_col + excess_col + late_col; |
2112 | |
2113 | dev->stats.rx_over_errors += rx_over; |
2114 | dev->stats.rx_crc_errors += crc; |
2115 | dev->stats.rx_frame_errors += code; |
2116 | |
2117 | dev->stats.tx_aborted_errors += tx_under; |
2118 | dev->stats.tx_carrier_errors += loss; |
2119 | } |
2120 | |
2121 | } |
2122 | |
2123 | |
2124 | |
2125 | |
2126 | /*************************************************************** |
2127 | * TLan_Reset |
2128 | * |
2129 | * Returns: |
2130 | * 0 |
2131 | * Parms: |
2132 | * dev Pointer to device structure of adapter |
2133 | * to be reset. |
2134 | * |
2135 | * This function resets the adapter and it's physical |
2136 | * device. See Chap. 3, pp. 9-10 of the "ThunderLAN |
2137 | * Programmer's Guide" for details. The routine tries to |
2138 | * implement what is detailed there, though adjustments |
2139 | * have been made. |
2140 | * |
2141 | **************************************************************/ |
2142 | |
2143 | static void |
2144 | tlan_reset_adapter(struct net_device *dev) |
2145 | { |
2146 | struct tlan_priv *priv = netdev_priv(dev); |
2147 | int i; |
2148 | u32 addr; |
2149 | u32 data; |
2150 | u8 data8; |
2151 | |
2152 | priv->tlan_full_duplex = false; |
2153 | priv->phy_online = 0; |
2154 | netif_carrier_off(dev); |
2155 | |
2156 | /* 1. Assert reset bit. */ |
2157 | |
2158 | data = inl(port: dev->base_addr + TLAN_HOST_CMD); |
2159 | data |= TLAN_HC_AD_RST; |
2160 | outl(value: data, port: dev->base_addr + TLAN_HOST_CMD); |
2161 | |
2162 | udelay(1000); |
2163 | |
2164 | /* 2. Turn off interrupts. (Probably isn't necessary) */ |
2165 | |
2166 | data = inl(port: dev->base_addr + TLAN_HOST_CMD); |
2167 | data |= TLAN_HC_INT_OFF; |
2168 | outl(value: data, port: dev->base_addr + TLAN_HOST_CMD); |
2169 | |
2170 | /* 3. Clear AREGs and HASHs. */ |
2171 | |
2172 | for (i = TLAN_AREG_0; i <= TLAN_HASH_2; i += 4) |
2173 | tlan_dio_write32(base_addr: dev->base_addr, internal_addr: (u16) i, data: 0); |
2174 | |
2175 | /* 4. Setup NetConfig register. */ |
2176 | |
2177 | data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN; |
2178 | tlan_dio_write16(base_addr: dev->base_addr, TLAN_NET_CONFIG, data: (u16) data); |
2179 | |
2180 | /* 5. Load Ld_Tmr and Ld_Thr in HOST_CMD. */ |
2181 | |
2182 | outl(TLAN_HC_LD_TMR | 0x3f, port: dev->base_addr + TLAN_HOST_CMD); |
2183 | outl(TLAN_HC_LD_THR | 0x9, port: dev->base_addr + TLAN_HOST_CMD); |
2184 | |
2185 | /* 6. Unreset the MII by setting NMRST (in NetSio) to 1. */ |
2186 | |
2187 | outw(TLAN_NET_SIO, port: dev->base_addr + TLAN_DIO_ADR); |
2188 | addr = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO; |
2189 | tlan_set_bit(TLAN_NET_SIO_NMRST, addr); |
2190 | |
2191 | /* 7. Setup the remaining registers. */ |
2192 | |
2193 | if (priv->tlan_rev >= 0x30) { |
2194 | data8 = TLAN_ID_TX_EOC | TLAN_ID_RX_EOC; |
2195 | tlan_dio_write8(base_addr: dev->base_addr, TLAN_INT_DIS, data: data8); |
2196 | } |
2197 | tlan_phy_detect(dev); |
2198 | data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN; |
2199 | |
2200 | if (priv->adapter->flags & TLAN_ADAPTER_BIT_RATE_PHY) { |
2201 | data |= TLAN_NET_CFG_BIT; |
2202 | if (priv->aui == 1) { |
2203 | tlan_dio_write8(base_addr: dev->base_addr, TLAN_ACOMMIT, data: 0x0a); |
2204 | } else if (priv->duplex == TLAN_DUPLEX_FULL) { |
2205 | tlan_dio_write8(base_addr: dev->base_addr, TLAN_ACOMMIT, data: 0x00); |
2206 | priv->tlan_full_duplex = true; |
2207 | } else { |
2208 | tlan_dio_write8(base_addr: dev->base_addr, TLAN_ACOMMIT, data: 0x08); |
2209 | } |
2210 | } |
2211 | |
2212 | /* don't power down internal PHY if we're going to use it */ |
2213 | if (priv->phy_num == 0 || |
2214 | (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10)) |
2215 | data |= TLAN_NET_CFG_PHY_EN; |
2216 | tlan_dio_write16(base_addr: dev->base_addr, TLAN_NET_CONFIG, data: (u16) data); |
2217 | |
2218 | if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) |
2219 | tlan_finish_reset(dev); |
2220 | else |
2221 | tlan_phy_power_down(dev); |
2222 | |
2223 | } |
2224 | |
2225 | |
2226 | |
2227 | |
2228 | static void |
2229 | tlan_finish_reset(struct net_device *dev) |
2230 | { |
2231 | struct tlan_priv *priv = netdev_priv(dev); |
2232 | u8 data; |
2233 | u32 phy; |
2234 | u8 sio; |
2235 | u16 status; |
2236 | u16 partner; |
2237 | u16 tlphy_ctl; |
2238 | u16 tlphy_par; |
2239 | u16 tlphy_id1, tlphy_id2; |
2240 | int i; |
2241 | |
2242 | phy = priv->phy[priv->phy_num]; |
2243 | |
2244 | data = TLAN_NET_CMD_NRESET | TLAN_NET_CMD_NWRAP; |
2245 | if (priv->tlan_full_duplex) |
2246 | data |= TLAN_NET_CMD_DUPLEX; |
2247 | tlan_dio_write8(base_addr: dev->base_addr, TLAN_NET_CMD, data); |
2248 | data = TLAN_NET_MASK_MASK4 | TLAN_NET_MASK_MASK5; |
2249 | if (priv->phy_num == 0) |
2250 | data |= TLAN_NET_MASK_MASK7; |
2251 | tlan_dio_write8(base_addr: dev->base_addr, TLAN_NET_MASK, data); |
2252 | tlan_dio_write16(base_addr: dev->base_addr, TLAN_MAX_RX, data: ((1536)+7)&~7); |
2253 | tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &tlphy_id1); |
2254 | tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &tlphy_id2); |
2255 | |
2256 | if ((priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) || |
2257 | (priv->aui)) { |
2258 | status = MII_GS_LINK; |
2259 | netdev_info(dev, format: "Link forced\n" ); |
2260 | } else { |
2261 | tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status); |
2262 | udelay(1000); |
2263 | tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status); |
2264 | if (status & MII_GS_LINK) { |
2265 | /* We only support link info on Nat.Sem. PHY's */ |
2266 | if ((tlphy_id1 == NAT_SEM_ID1) && |
2267 | (tlphy_id2 == NAT_SEM_ID2)) { |
2268 | tlan_mii_read_reg(dev, phy, MII_AN_LPA, |
2269 | &partner); |
2270 | tlan_mii_read_reg(dev, phy, TLAN_TLPHY_PAR, |
2271 | &tlphy_par); |
2272 | |
2273 | netdev_info(dev, |
2274 | format: "Link active, %s %uMbps %s-Duplex\n" , |
2275 | !(tlphy_par & TLAN_PHY_AN_EN_STAT) |
2276 | ? "forced" : "Autonegotiation enabled," , |
2277 | tlphy_par & TLAN_PHY_SPEED_100 |
2278 | ? 100 : 10, |
2279 | tlphy_par & TLAN_PHY_DUPLEX_FULL |
2280 | ? "Full" : "Half" ); |
2281 | |
2282 | if (tlphy_par & TLAN_PHY_AN_EN_STAT) { |
2283 | netdev_info(dev, format: "Partner capability:" ); |
2284 | for (i = 5; i < 10; i++) |
2285 | if (partner & (1 << i)) |
2286 | pr_cont(" %s" , |
2287 | media[i-5]); |
2288 | pr_cont("\n" ); |
2289 | } |
2290 | } else |
2291 | netdev_info(dev, format: "Link active\n" ); |
2292 | /* Enabling link beat monitoring */ |
2293 | priv->media_timer.expires = jiffies + HZ; |
2294 | add_timer(timer: &priv->media_timer); |
2295 | } |
2296 | } |
2297 | |
2298 | if (priv->phy_num == 0) { |
2299 | tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl); |
2300 | tlphy_ctl |= TLAN_TC_INTEN; |
2301 | tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tlphy_ctl); |
2302 | sio = tlan_dio_read8(base_addr: dev->base_addr, TLAN_NET_SIO); |
2303 | sio |= TLAN_NET_SIO_MINTEN; |
2304 | tlan_dio_write8(base_addr: dev->base_addr, TLAN_NET_SIO, data: sio); |
2305 | } |
2306 | |
2307 | if (status & MII_GS_LINK) { |
2308 | tlan_set_mac(dev, areg: 0, mac: dev->dev_addr); |
2309 | priv->phy_online = 1; |
2310 | outb(value: (TLAN_HC_INT_ON >> 8), port: dev->base_addr + TLAN_HOST_CMD + 1); |
2311 | if (debug >= 1 && debug != TLAN_DEBUG_PROBE) |
2312 | outb(value: (TLAN_HC_REQ_INT >> 8), |
2313 | port: dev->base_addr + TLAN_HOST_CMD + 1); |
2314 | outl(value: priv->rx_list_dma, port: dev->base_addr + TLAN_CH_PARM); |
2315 | outl(TLAN_HC_GO | TLAN_HC_RT, port: dev->base_addr + TLAN_HOST_CMD); |
2316 | tlan_dio_write8(base_addr: dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK); |
2317 | netif_carrier_on(dev); |
2318 | } else { |
2319 | netdev_info(dev, format: "Link inactive, will retry in 10 secs...\n" ); |
2320 | tlan_set_timer(dev, ticks: (10*HZ), TLAN_TIMER_FINISH_RESET); |
2321 | return; |
2322 | } |
2323 | tlan_set_multicast_list(dev); |
2324 | |
2325 | } |
2326 | |
2327 | |
2328 | |
2329 | |
2330 | /*************************************************************** |
2331 | * tlan_set_mac |
2332 | * |
2333 | * Returns: |
2334 | * Nothing |
2335 | * Parms: |
2336 | * dev Pointer to device structure of adapter |
2337 | * on which to change the AREG. |
2338 | * areg The AREG to set the address in (0 - 3). |
2339 | * mac A pointer to an array of chars. Each |
2340 | * element stores one byte of the address. |
2341 | * IE, it isn't in ascii. |
2342 | * |
2343 | * This function transfers a MAC address to one of the |
2344 | * TLAN AREGs (address registers). The TLAN chip locks |
2345 | * the register on writing to offset 0 and unlocks the |
2346 | * register after writing to offset 5. If NULL is passed |
2347 | * in mac, then the AREG is filled with 0's. |
2348 | * |
2349 | **************************************************************/ |
2350 | |
2351 | static void tlan_set_mac(struct net_device *dev, int areg, const char *mac) |
2352 | { |
2353 | int i; |
2354 | |
2355 | areg *= 6; |
2356 | |
2357 | if (mac != NULL) { |
2358 | for (i = 0; i < 6; i++) |
2359 | tlan_dio_write8(base_addr: dev->base_addr, |
2360 | TLAN_AREG_0 + areg + i, data: mac[i]); |
2361 | } else { |
2362 | for (i = 0; i < 6; i++) |
2363 | tlan_dio_write8(base_addr: dev->base_addr, |
2364 | TLAN_AREG_0 + areg + i, data: 0); |
2365 | } |
2366 | |
2367 | } |
2368 | |
2369 | |
2370 | |
2371 | |
2372 | /***************************************************************************** |
2373 | ****************************************************************************** |
2374 | |
2375 | ThunderLAN driver PHY layer routines |
2376 | |
2377 | ****************************************************************************** |
2378 | *****************************************************************************/ |
2379 | |
2380 | |
2381 | |
2382 | /********************************************************************* |
2383 | * __tlan_phy_print |
2384 | * |
2385 | * Returns: |
2386 | * Nothing |
2387 | * Parms: |
2388 | * dev A pointer to the device structure of the |
2389 | * TLAN device having the PHYs to be detailed. |
2390 | * |
2391 | * This function prints the registers a PHY (aka transceiver). |
2392 | * |
2393 | ********************************************************************/ |
2394 | |
2395 | static void __tlan_phy_print(struct net_device *dev) |
2396 | { |
2397 | struct tlan_priv *priv = netdev_priv(dev); |
2398 | u16 i, data0, data1, data2, data3, phy; |
2399 | |
2400 | lockdep_assert_held(&priv->lock); |
2401 | |
2402 | phy = priv->phy[priv->phy_num]; |
2403 | |
2404 | if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) { |
2405 | netdev_info(dev, format: "Unmanaged PHY\n" ); |
2406 | } else if (phy <= TLAN_PHY_MAX_ADDR) { |
2407 | netdev_info(dev, format: "PHY 0x%02x\n" , phy); |
2408 | pr_info(" Off. +0 +1 +2 +3\n" ); |
2409 | for (i = 0; i < 0x20; i += 4) { |
2410 | __tlan_mii_read_reg(dev, phy, i, &data0); |
2411 | __tlan_mii_read_reg(dev, phy, i + 1, &data1); |
2412 | __tlan_mii_read_reg(dev, phy, i + 2, &data2); |
2413 | __tlan_mii_read_reg(dev, phy, i + 3, &data3); |
2414 | pr_info(" 0x%02x 0x%04hx 0x%04hx 0x%04hx 0x%04hx\n" , |
2415 | i, data0, data1, data2, data3); |
2416 | } |
2417 | } else { |
2418 | netdev_info(dev, format: "Invalid PHY\n" ); |
2419 | } |
2420 | |
2421 | } |
2422 | |
2423 | static void tlan_phy_print(struct net_device *dev) |
2424 | { |
2425 | struct tlan_priv *priv = netdev_priv(dev); |
2426 | unsigned long flags; |
2427 | |
2428 | spin_lock_irqsave(&priv->lock, flags); |
2429 | __tlan_phy_print(dev); |
2430 | spin_unlock_irqrestore(lock: &priv->lock, flags); |
2431 | } |
2432 | |
2433 | |
2434 | /********************************************************************* |
2435 | * tlan_phy_detect |
2436 | * |
2437 | * Returns: |
2438 | * Nothing |
2439 | * Parms: |
2440 | * dev A pointer to the device structure of the adapter |
2441 | * for which the PHY needs determined. |
2442 | * |
2443 | * So far I've found that adapters which have external PHYs |
2444 | * may also use the internal PHY for part of the functionality. |
2445 | * (eg, AUI/Thinnet). This function finds out if this TLAN |
2446 | * chip has an internal PHY, and then finds the first external |
2447 | * PHY (starting from address 0) if it exists). |
2448 | * |
2449 | ********************************************************************/ |
2450 | |
2451 | static void tlan_phy_detect(struct net_device *dev) |
2452 | { |
2453 | struct tlan_priv *priv = netdev_priv(dev); |
2454 | u16 control; |
2455 | u16 hi; |
2456 | u16 lo; |
2457 | u32 phy; |
2458 | |
2459 | if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) { |
2460 | priv->phy_num = 0xffff; |
2461 | return; |
2462 | } |
2463 | |
2464 | tlan_mii_read_reg(dev, TLAN_PHY_MAX_ADDR, MII_GEN_ID_HI, &hi); |
2465 | |
2466 | if (hi != 0xffff) |
2467 | priv->phy[0] = TLAN_PHY_MAX_ADDR; |
2468 | else |
2469 | priv->phy[0] = TLAN_PHY_NONE; |
2470 | |
2471 | priv->phy[1] = TLAN_PHY_NONE; |
2472 | for (phy = 0; phy <= TLAN_PHY_MAX_ADDR; phy++) { |
2473 | tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &control); |
2474 | tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &hi); |
2475 | tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &lo); |
2476 | if ((control != 0xffff) || |
2477 | (hi != 0xffff) || (lo != 0xffff)) { |
2478 | TLAN_DBG(TLAN_DEBUG_GNRL, |
2479 | "PHY found at %02x %04x %04x %04x\n" , |
2480 | phy, control, hi, lo); |
2481 | if ((priv->phy[1] == TLAN_PHY_NONE) && |
2482 | (phy != TLAN_PHY_MAX_ADDR)) { |
2483 | priv->phy[1] = phy; |
2484 | } |
2485 | } |
2486 | } |
2487 | |
2488 | if (priv->phy[1] != TLAN_PHY_NONE) |
2489 | priv->phy_num = 1; |
2490 | else if (priv->phy[0] != TLAN_PHY_NONE) |
2491 | priv->phy_num = 0; |
2492 | else |
2493 | netdev_info(dev, format: "Cannot initialize device, no PHY was found!\n" ); |
2494 | |
2495 | } |
2496 | |
2497 | |
2498 | |
2499 | |
2500 | static void tlan_phy_power_down(struct net_device *dev) |
2501 | { |
2502 | struct tlan_priv *priv = netdev_priv(dev); |
2503 | u16 value; |
2504 | |
2505 | TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering down PHY(s).\n" , dev->name); |
2506 | value = MII_GC_PDOWN | MII_GC_LOOPBK | MII_GC_ISOLATE; |
2507 | tlan_mii_sync(dev->base_addr); |
2508 | tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value); |
2509 | if ((priv->phy_num == 0) && (priv->phy[1] != TLAN_PHY_NONE)) { |
2510 | /* if using internal PHY, the external PHY must be powered on */ |
2511 | if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) |
2512 | value = MII_GC_ISOLATE; /* just isolate it from MII */ |
2513 | tlan_mii_sync(dev->base_addr); |
2514 | tlan_mii_write_reg(dev, priv->phy[1], MII_GEN_CTL, value); |
2515 | } |
2516 | |
2517 | /* Wait for 50 ms and powerup |
2518 | * This is arbitrary. It is intended to make sure the |
2519 | * transceiver settles. |
2520 | */ |
2521 | tlan_set_timer(dev, ticks: msecs_to_jiffies(m: 50), TLAN_TIMER_PHY_PUP); |
2522 | |
2523 | } |
2524 | |
2525 | |
2526 | |
2527 | |
2528 | static void tlan_phy_power_up(struct net_device *dev) |
2529 | { |
2530 | struct tlan_priv *priv = netdev_priv(dev); |
2531 | u16 value; |
2532 | |
2533 | TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering up PHY.\n" , dev->name); |
2534 | tlan_mii_sync(dev->base_addr); |
2535 | value = MII_GC_LOOPBK; |
2536 | tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value); |
2537 | tlan_mii_sync(dev->base_addr); |
2538 | /* Wait for 500 ms and reset the |
2539 | * transceiver. The TLAN docs say both 50 ms and |
2540 | * 500 ms, so do the longer, just in case. |
2541 | */ |
2542 | tlan_set_timer(dev, ticks: msecs_to_jiffies(m: 500), TLAN_TIMER_PHY_RESET); |
2543 | |
2544 | } |
2545 | |
2546 | |
2547 | |
2548 | |
2549 | static void tlan_phy_reset(struct net_device *dev) |
2550 | { |
2551 | struct tlan_priv *priv = netdev_priv(dev); |
2552 | u16 phy; |
2553 | u16 value; |
2554 | unsigned long timeout = jiffies + HZ; |
2555 | |
2556 | phy = priv->phy[priv->phy_num]; |
2557 | |
2558 | TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Resetting PHY.\n" , dev->name); |
2559 | tlan_mii_sync(dev->base_addr); |
2560 | value = MII_GC_LOOPBK | MII_GC_RESET; |
2561 | tlan_mii_write_reg(dev, phy, MII_GEN_CTL, value); |
2562 | do { |
2563 | tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value); |
2564 | if (time_after(jiffies, timeout)) { |
2565 | netdev_err(dev, format: "PHY reset timeout\n" ); |
2566 | return; |
2567 | } |
2568 | } while (value & MII_GC_RESET); |
2569 | |
2570 | /* Wait for 500 ms and initialize. |
2571 | * I don't remember why I wait this long. |
2572 | * I've changed this to 50ms, as it seems long enough. |
2573 | */ |
2574 | tlan_set_timer(dev, ticks: msecs_to_jiffies(m: 50), TLAN_TIMER_PHY_START_LINK); |
2575 | |
2576 | } |
2577 | |
2578 | |
2579 | |
2580 | |
2581 | static void tlan_phy_start_link(struct net_device *dev) |
2582 | { |
2583 | struct tlan_priv *priv = netdev_priv(dev); |
2584 | u16 ability; |
2585 | u16 control; |
2586 | u16 data; |
2587 | u16 phy; |
2588 | u16 status; |
2589 | u16 tctl; |
2590 | |
2591 | phy = priv->phy[priv->phy_num]; |
2592 | TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Trying to activate link.\n" , dev->name); |
2593 | tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status); |
2594 | tlan_mii_read_reg(dev, phy, MII_GEN_STS, &ability); |
2595 | |
2596 | if ((status & MII_GS_AUTONEG) && |
2597 | (!priv->aui)) { |
2598 | ability = status >> 11; |
2599 | if (priv->speed == TLAN_SPEED_10 && |
2600 | priv->duplex == TLAN_DUPLEX_HALF) { |
2601 | tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0000); |
2602 | } else if (priv->speed == TLAN_SPEED_10 && |
2603 | priv->duplex == TLAN_DUPLEX_FULL) { |
2604 | priv->tlan_full_duplex = true; |
2605 | tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0100); |
2606 | } else if (priv->speed == TLAN_SPEED_100 && |
2607 | priv->duplex == TLAN_DUPLEX_HALF) { |
2608 | tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2000); |
2609 | } else if (priv->speed == TLAN_SPEED_100 && |
2610 | priv->duplex == TLAN_DUPLEX_FULL) { |
2611 | priv->tlan_full_duplex = true; |
2612 | tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2100); |
2613 | } else { |
2614 | |
2615 | /* Set Auto-Neg advertisement */ |
2616 | tlan_mii_write_reg(dev, phy, MII_AN_ADV, |
2617 | (ability << 5) | 1); |
2618 | /* Enablee Auto-Neg */ |
2619 | tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1000); |
2620 | /* Restart Auto-Neg */ |
2621 | tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1200); |
2622 | /* Wait for 4 sec for autonegotiation |
2623 | * to complete. The max spec time is less than this |
2624 | * but the card need additional time to start AN. |
2625 | * .5 sec should be plenty extra. |
2626 | */ |
2627 | netdev_info(dev, format: "Starting autonegotiation\n" ); |
2628 | tlan_set_timer(dev, ticks: (2*HZ), TLAN_TIMER_PHY_FINISH_AN); |
2629 | return; |
2630 | } |
2631 | |
2632 | } |
2633 | |
2634 | if ((priv->aui) && (priv->phy_num != 0)) { |
2635 | priv->phy_num = 0; |
2636 | data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN |
2637 | | TLAN_NET_CFG_PHY_EN; |
2638 | tlan_dio_write16(base_addr: dev->base_addr, TLAN_NET_CONFIG, data); |
2639 | tlan_set_timer(dev, ticks: msecs_to_jiffies(m: 40), TLAN_TIMER_PHY_PDOWN); |
2640 | return; |
2641 | } else if (priv->phy_num == 0) { |
2642 | control = 0; |
2643 | tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tctl); |
2644 | if (priv->aui) { |
2645 | tctl |= TLAN_TC_AUISEL; |
2646 | } else { |
2647 | tctl &= ~TLAN_TC_AUISEL; |
2648 | if (priv->duplex == TLAN_DUPLEX_FULL) { |
2649 | control |= MII_GC_DUPLEX; |
2650 | priv->tlan_full_duplex = true; |
2651 | } |
2652 | if (priv->speed == TLAN_SPEED_100) |
2653 | control |= MII_GC_SPEEDSEL; |
2654 | } |
2655 | tlan_mii_write_reg(dev, phy, MII_GEN_CTL, control); |
2656 | tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tctl); |
2657 | } |
2658 | |
2659 | /* Wait for 2 sec to give the transceiver time |
2660 | * to establish link. |
2661 | */ |
2662 | tlan_set_timer(dev, ticks: (4*HZ), TLAN_TIMER_FINISH_RESET); |
2663 | |
2664 | } |
2665 | |
2666 | |
2667 | |
2668 | |
2669 | static void tlan_phy_finish_auto_neg(struct net_device *dev) |
2670 | { |
2671 | struct tlan_priv *priv = netdev_priv(dev); |
2672 | u16 an_adv; |
2673 | u16 an_lpa; |
2674 | u16 mode; |
2675 | u16 phy; |
2676 | u16 status; |
2677 | |
2678 | phy = priv->phy[priv->phy_num]; |
2679 | |
2680 | tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status); |
2681 | udelay(1000); |
2682 | tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status); |
2683 | |
2684 | if (!(status & MII_GS_AUTOCMPLT)) { |
2685 | /* Wait for 8 sec to give the process |
2686 | * more time. Perhaps we should fail after a while. |
2687 | */ |
2688 | tlan_set_timer(dev, ticks: 2 * HZ, TLAN_TIMER_PHY_FINISH_AN); |
2689 | return; |
2690 | } |
2691 | |
2692 | netdev_info(dev, format: "Autonegotiation complete\n" ); |
2693 | tlan_mii_read_reg(dev, phy, MII_AN_ADV, &an_adv); |
2694 | tlan_mii_read_reg(dev, phy, MII_AN_LPA, &an_lpa); |
2695 | mode = an_adv & an_lpa & 0x03E0; |
2696 | if (mode & 0x0100) |
2697 | priv->tlan_full_duplex = true; |
2698 | else if (!(mode & 0x0080) && (mode & 0x0040)) |
2699 | priv->tlan_full_duplex = true; |
2700 | |
2701 | /* switch to internal PHY for 10 Mbps */ |
2702 | if ((!(mode & 0x0180)) && |
2703 | (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) && |
2704 | (priv->phy_num != 0)) { |
2705 | priv->phy_num = 0; |
2706 | tlan_set_timer(dev, ticks: msecs_to_jiffies(m: 400), TLAN_TIMER_PHY_PDOWN); |
2707 | return; |
2708 | } |
2709 | |
2710 | if (priv->phy_num == 0) { |
2711 | if ((priv->duplex == TLAN_DUPLEX_FULL) || |
2712 | (an_adv & an_lpa & 0x0040)) { |
2713 | tlan_mii_write_reg(dev, phy, MII_GEN_CTL, |
2714 | MII_GC_AUTOENB | MII_GC_DUPLEX); |
2715 | netdev_info(dev, format: "Starting internal PHY with FULL-DUPLEX\n" ); |
2716 | } else { |
2717 | tlan_mii_write_reg(dev, phy, MII_GEN_CTL, |
2718 | MII_GC_AUTOENB); |
2719 | netdev_info(dev, format: "Starting internal PHY with HALF-DUPLEX\n" ); |
2720 | } |
2721 | } |
2722 | |
2723 | /* Wait for 100 ms. No reason in partiticular. |
2724 | */ |
2725 | tlan_set_timer(dev, ticks: msecs_to_jiffies(m: 100), TLAN_TIMER_FINISH_RESET); |
2726 | |
2727 | } |
2728 | |
2729 | |
2730 | /********************************************************************* |
2731 | * |
2732 | * tlan_phy_monitor |
2733 | * |
2734 | * Returns: |
2735 | * None |
2736 | * |
2737 | * Params: |
2738 | * data The device structure of this device. |
2739 | * |
2740 | * |
2741 | * This function monitors PHY condition by reading the status |
2742 | * register via the MII bus, controls LINK LED and notifies the |
2743 | * kernel about link state. |
2744 | * |
2745 | *******************************************************************/ |
2746 | |
2747 | static void tlan_phy_monitor(struct timer_list *t) |
2748 | { |
2749 | struct tlan_priv *priv = from_timer(priv, t, media_timer); |
2750 | struct net_device *dev = priv->dev; |
2751 | u16 phy; |
2752 | u16 phy_status; |
2753 | |
2754 | phy = priv->phy[priv->phy_num]; |
2755 | |
2756 | /* Get PHY status register */ |
2757 | tlan_mii_read_reg(dev, phy, MII_GEN_STS, &phy_status); |
2758 | |
2759 | /* Check if link has been lost */ |
2760 | if (!(phy_status & MII_GS_LINK)) { |
2761 | if (netif_carrier_ok(dev)) { |
2762 | printk(KERN_DEBUG "TLAN: %s has lost link\n" , |
2763 | dev->name); |
2764 | tlan_dio_write8(base_addr: dev->base_addr, TLAN_LED_REG, data: 0); |
2765 | netif_carrier_off(dev); |
2766 | if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) { |
2767 | /* power down internal PHY */ |
2768 | u16 data = MII_GC_PDOWN | MII_GC_LOOPBK | |
2769 | MII_GC_ISOLATE; |
2770 | |
2771 | tlan_mii_sync(dev->base_addr); |
2772 | tlan_mii_write_reg(dev, priv->phy[0], |
2773 | MII_GEN_CTL, data); |
2774 | /* set to external PHY */ |
2775 | priv->phy_num = 1; |
2776 | /* restart autonegotiation */ |
2777 | tlan_set_timer(dev, ticks: msecs_to_jiffies(m: 400), |
2778 | TLAN_TIMER_PHY_PDOWN); |
2779 | return; |
2780 | } |
2781 | } |
2782 | } |
2783 | |
2784 | /* Link restablished? */ |
2785 | if ((phy_status & MII_GS_LINK) && !netif_carrier_ok(dev)) { |
2786 | tlan_dio_write8(base_addr: dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK); |
2787 | printk(KERN_DEBUG "TLAN: %s has reestablished link\n" , |
2788 | dev->name); |
2789 | netif_carrier_on(dev); |
2790 | } |
2791 | priv->media_timer.expires = jiffies + HZ; |
2792 | add_timer(timer: &priv->media_timer); |
2793 | } |
2794 | |
2795 | |
2796 | /***************************************************************************** |
2797 | ****************************************************************************** |
2798 | |
2799 | ThunderLAN driver MII routines |
2800 | |
2801 | these routines are based on the information in chap. 2 of the |
2802 | "ThunderLAN Programmer's Guide", pp. 15-24. |
2803 | |
2804 | ****************************************************************************** |
2805 | *****************************************************************************/ |
2806 | |
2807 | |
2808 | /*************************************************************** |
2809 | * __tlan_mii_read_reg |
2810 | * |
2811 | * Returns: |
2812 | * false if ack received ok |
2813 | * true if no ack received or other error |
2814 | * |
2815 | * Parms: |
2816 | * dev The device structure containing |
2817 | * The io address and interrupt count |
2818 | * for this device. |
2819 | * phy The address of the PHY to be queried. |
2820 | * reg The register whose contents are to be |
2821 | * retrieved. |
2822 | * val A pointer to a variable to store the |
2823 | * retrieved value. |
2824 | * |
2825 | * This function uses the TLAN's MII bus to retrieve the contents |
2826 | * of a given register on a PHY. It sends the appropriate info |
2827 | * and then reads the 16-bit register value from the MII bus via |
2828 | * the TLAN SIO register. |
2829 | * |
2830 | **************************************************************/ |
2831 | |
2832 | static bool |
2833 | __tlan_mii_read_reg(struct net_device *dev, u16 phy, u16 reg, u16 *val) |
2834 | { |
2835 | u8 nack; |
2836 | u16 sio, tmp; |
2837 | u32 i; |
2838 | bool err; |
2839 | int minten; |
2840 | struct tlan_priv *priv = netdev_priv(dev); |
2841 | |
2842 | lockdep_assert_held(&priv->lock); |
2843 | |
2844 | err = false; |
2845 | outw(TLAN_NET_SIO, port: dev->base_addr + TLAN_DIO_ADR); |
2846 | sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO; |
2847 | |
2848 | tlan_mii_sync(dev->base_addr); |
2849 | |
2850 | minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio); |
2851 | if (minten) |
2852 | tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio); |
2853 | |
2854 | tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */ |
2855 | tlan_mii_send_data(dev->base_addr, 0x2, 2); /* read (10b) */ |
2856 | tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */ |
2857 | tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */ |
2858 | |
2859 | |
2860 | tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio); /* change direction */ |
2861 | |
2862 | tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* clock idle bit */ |
2863 | tlan_set_bit(TLAN_NET_SIO_MCLK, sio); |
2864 | tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* wait 300ns */ |
2865 | |
2866 | nack = tlan_get_bit(TLAN_NET_SIO_MDATA, sio); /* check for ACK */ |
2867 | tlan_set_bit(TLAN_NET_SIO_MCLK, sio); /* finish ACK */ |
2868 | if (nack) { /* no ACK, so fake it */ |
2869 | for (i = 0; i < 16; i++) { |
2870 | tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); |
2871 | tlan_set_bit(TLAN_NET_SIO_MCLK, sio); |
2872 | } |
2873 | tmp = 0xffff; |
2874 | err = true; |
2875 | } else { /* ACK, so read data */ |
2876 | for (tmp = 0, i = 0x8000; i; i >>= 1) { |
2877 | tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); |
2878 | if (tlan_get_bit(TLAN_NET_SIO_MDATA, sio)) |
2879 | tmp |= i; |
2880 | tlan_set_bit(TLAN_NET_SIO_MCLK, sio); |
2881 | } |
2882 | } |
2883 | |
2884 | |
2885 | tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */ |
2886 | tlan_set_bit(TLAN_NET_SIO_MCLK, sio); |
2887 | |
2888 | if (minten) |
2889 | tlan_set_bit(TLAN_NET_SIO_MINTEN, sio); |
2890 | |
2891 | *val = tmp; |
2892 | |
2893 | return err; |
2894 | } |
2895 | |
2896 | static void tlan_mii_read_reg(struct net_device *dev, u16 phy, u16 reg, |
2897 | u16 *val) |
2898 | { |
2899 | struct tlan_priv *priv = netdev_priv(dev); |
2900 | unsigned long flags; |
2901 | |
2902 | spin_lock_irqsave(&priv->lock, flags); |
2903 | __tlan_mii_read_reg(dev, phy, reg, val); |
2904 | spin_unlock_irqrestore(lock: &priv->lock, flags); |
2905 | } |
2906 | |
2907 | /*************************************************************** |
2908 | * tlan_mii_send_data |
2909 | * |
2910 | * Returns: |
2911 | * Nothing |
2912 | * Parms: |
2913 | * base_port The base IO port of the adapter in |
2914 | * question. |
2915 | * dev The address of the PHY to be queried. |
2916 | * data The value to be placed on the MII bus. |
2917 | * num_bits The number of bits in data that are to |
2918 | * be placed on the MII bus. |
2919 | * |
2920 | * This function sends on sequence of bits on the MII |
2921 | * configuration bus. |
2922 | * |
2923 | **************************************************************/ |
2924 | |
2925 | static void tlan_mii_send_data(u16 base_port, u32 data, unsigned num_bits) |
2926 | { |
2927 | u16 sio; |
2928 | u32 i; |
2929 | |
2930 | if (num_bits == 0) |
2931 | return; |
2932 | |
2933 | outw(TLAN_NET_SIO, port: base_port + TLAN_DIO_ADR); |
2934 | sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO; |
2935 | tlan_set_bit(TLAN_NET_SIO_MTXEN, sio); |
2936 | |
2937 | for (i = (0x1 << (num_bits - 1)); i; i >>= 1) { |
2938 | tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); |
2939 | (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio); |
2940 | if (data & i) |
2941 | tlan_set_bit(TLAN_NET_SIO_MDATA, sio); |
2942 | else |
2943 | tlan_clear_bit(TLAN_NET_SIO_MDATA, sio); |
2944 | tlan_set_bit(TLAN_NET_SIO_MCLK, sio); |
2945 | (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio); |
2946 | } |
2947 | |
2948 | } |
2949 | |
2950 | |
2951 | |
2952 | |
2953 | /*************************************************************** |
2954 | * TLan_MiiSync |
2955 | * |
2956 | * Returns: |
2957 | * Nothing |
2958 | * Parms: |
2959 | * base_port The base IO port of the adapter in |
2960 | * question. |
2961 | * |
2962 | * This functions syncs all PHYs in terms of the MII configuration |
2963 | * bus. |
2964 | * |
2965 | **************************************************************/ |
2966 | |
2967 | static void tlan_mii_sync(u16 base_port) |
2968 | { |
2969 | int i; |
2970 | u16 sio; |
2971 | |
2972 | outw(TLAN_NET_SIO, port: base_port + TLAN_DIO_ADR); |
2973 | sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO; |
2974 | |
2975 | tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio); |
2976 | for (i = 0; i < 32; i++) { |
2977 | tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); |
2978 | tlan_set_bit(TLAN_NET_SIO_MCLK, sio); |
2979 | } |
2980 | |
2981 | } |
2982 | |
2983 | |
2984 | |
2985 | |
2986 | /*************************************************************** |
2987 | * __tlan_mii_write_reg |
2988 | * |
2989 | * Returns: |
2990 | * Nothing |
2991 | * Parms: |
2992 | * dev The device structure for the device |
2993 | * to write to. |
2994 | * phy The address of the PHY to be written to. |
2995 | * reg The register whose contents are to be |
2996 | * written. |
2997 | * val The value to be written to the register. |
2998 | * |
2999 | * This function uses the TLAN's MII bus to write the contents of a |
3000 | * given register on a PHY. It sends the appropriate info and then |
3001 | * writes the 16-bit register value from the MII configuration bus |
3002 | * via the TLAN SIO register. |
3003 | * |
3004 | **************************************************************/ |
3005 | |
3006 | static void |
3007 | __tlan_mii_write_reg(struct net_device *dev, u16 phy, u16 reg, u16 val) |
3008 | { |
3009 | u16 sio; |
3010 | int minten; |
3011 | struct tlan_priv *priv = netdev_priv(dev); |
3012 | |
3013 | lockdep_assert_held(&priv->lock); |
3014 | |
3015 | outw(TLAN_NET_SIO, port: dev->base_addr + TLAN_DIO_ADR); |
3016 | sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO; |
3017 | |
3018 | tlan_mii_sync(base_port: dev->base_addr); |
3019 | |
3020 | minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio); |
3021 | if (minten) |
3022 | tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio); |
3023 | |
3024 | tlan_mii_send_data(base_port: dev->base_addr, data: 0x1, num_bits: 2); /* start (01b) */ |
3025 | tlan_mii_send_data(base_port: dev->base_addr, data: 0x1, num_bits: 2); /* write (01b) */ |
3026 | tlan_mii_send_data(base_port: dev->base_addr, data: phy, num_bits: 5); /* device # */ |
3027 | tlan_mii_send_data(base_port: dev->base_addr, data: reg, num_bits: 5); /* register # */ |
3028 | |
3029 | tlan_mii_send_data(base_port: dev->base_addr, data: 0x2, num_bits: 2); /* send ACK */ |
3030 | tlan_mii_send_data(base_port: dev->base_addr, data: val, num_bits: 16); /* send data */ |
3031 | |
3032 | tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */ |
3033 | tlan_set_bit(TLAN_NET_SIO_MCLK, sio); |
3034 | |
3035 | if (minten) |
3036 | tlan_set_bit(TLAN_NET_SIO_MINTEN, sio); |
3037 | |
3038 | } |
3039 | |
3040 | static void |
3041 | tlan_mii_write_reg(struct net_device *dev, u16 phy, u16 reg, u16 val) |
3042 | { |
3043 | struct tlan_priv *priv = netdev_priv(dev); |
3044 | unsigned long flags; |
3045 | |
3046 | spin_lock_irqsave(&priv->lock, flags); |
3047 | __tlan_mii_write_reg(dev, phy, reg, val); |
3048 | spin_unlock_irqrestore(lock: &priv->lock, flags); |
3049 | } |
3050 | |
3051 | |
3052 | /***************************************************************************** |
3053 | ****************************************************************************** |
3054 | |
3055 | ThunderLAN driver eeprom routines |
3056 | |
3057 | the Compaq netelligent 10 and 10/100 cards use a microchip 24C02A |
3058 | EEPROM. these functions are based on information in microchip's |
3059 | data sheet. I don't know how well this functions will work with |
3060 | other Eeproms. |
3061 | |
3062 | ****************************************************************************** |
3063 | *****************************************************************************/ |
3064 | |
3065 | |
3066 | /*************************************************************** |
3067 | * tlan_ee_send_start |
3068 | * |
3069 | * Returns: |
3070 | * Nothing |
3071 | * Parms: |
3072 | * io_base The IO port base address for the |
3073 | * TLAN device with the EEPROM to |
3074 | * use. |
3075 | * |
3076 | * This function sends a start cycle to an EEPROM attached |
3077 | * to a TLAN chip. |
3078 | * |
3079 | **************************************************************/ |
3080 | |
3081 | static void tlan_ee_send_start(u16 io_base) |
3082 | { |
3083 | u16 sio; |
3084 | |
3085 | outw(TLAN_NET_SIO, port: io_base + TLAN_DIO_ADR); |
3086 | sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO; |
3087 | |
3088 | tlan_set_bit(TLAN_NET_SIO_ECLOK, sio); |
3089 | tlan_set_bit(TLAN_NET_SIO_EDATA, sio); |
3090 | tlan_set_bit(TLAN_NET_SIO_ETXEN, sio); |
3091 | tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); |
3092 | tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio); |
3093 | |
3094 | } |
3095 | |
3096 | |
3097 | |
3098 | |
3099 | /*************************************************************** |
3100 | * tlan_ee_send_byte |
3101 | * |
3102 | * Returns: |
3103 | * If the correct ack was received, 0, otherwise 1 |
3104 | * Parms: io_base The IO port base address for the |
3105 | * TLAN device with the EEPROM to |
3106 | * use. |
3107 | * data The 8 bits of information to |
3108 | * send to the EEPROM. |
3109 | * stop If TLAN_EEPROM_STOP is passed, a |
3110 | * stop cycle is sent after the |
3111 | * byte is sent after the ack is |
3112 | * read. |
3113 | * |
3114 | * This function sends a byte on the serial EEPROM line, |
3115 | * driving the clock to send each bit. The function then |
3116 | * reverses transmission direction and reads an acknowledge |
3117 | * bit. |
3118 | * |
3119 | **************************************************************/ |
3120 | |
3121 | static int tlan_ee_send_byte(u16 io_base, u8 data, int stop) |
3122 | { |
3123 | int err; |
3124 | u8 place; |
3125 | u16 sio; |
3126 | |
3127 | outw(TLAN_NET_SIO, port: io_base + TLAN_DIO_ADR); |
3128 | sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO; |
3129 | |
3130 | /* Assume clock is low, tx is enabled; */ |
3131 | for (place = 0x80; place != 0; place >>= 1) { |
3132 | if (place & data) |
3133 | tlan_set_bit(TLAN_NET_SIO_EDATA, sio); |
3134 | else |
3135 | tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); |
3136 | tlan_set_bit(TLAN_NET_SIO_ECLOK, sio); |
3137 | tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio); |
3138 | } |
3139 | tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio); |
3140 | tlan_set_bit(TLAN_NET_SIO_ECLOK, sio); |
3141 | err = tlan_get_bit(TLAN_NET_SIO_EDATA, sio); |
3142 | tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio); |
3143 | tlan_set_bit(TLAN_NET_SIO_ETXEN, sio); |
3144 | |
3145 | if ((!err) && stop) { |
3146 | /* STOP, raise data while clock is high */ |
3147 | tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); |
3148 | tlan_set_bit(TLAN_NET_SIO_ECLOK, sio); |
3149 | tlan_set_bit(TLAN_NET_SIO_EDATA, sio); |
3150 | } |
3151 | |
3152 | return err; |
3153 | |
3154 | } |
3155 | |
3156 | |
3157 | |
3158 | |
3159 | /*************************************************************** |
3160 | * tlan_ee_receive_byte |
3161 | * |
3162 | * Returns: |
3163 | * Nothing |
3164 | * Parms: |
3165 | * io_base The IO port base address for the |
3166 | * TLAN device with the EEPROM to |
3167 | * use. |
3168 | * data An address to a char to hold the |
3169 | * data sent from the EEPROM. |
3170 | * stop If TLAN_EEPROM_STOP is passed, a |
3171 | * stop cycle is sent after the |
3172 | * byte is received, and no ack is |
3173 | * sent. |
3174 | * |
3175 | * This function receives 8 bits of data from the EEPROM |
3176 | * over the serial link. It then sends and ack bit, or no |
3177 | * ack and a stop bit. This function is used to retrieve |
3178 | * data after the address of a byte in the EEPROM has been |
3179 | * sent. |
3180 | * |
3181 | **************************************************************/ |
3182 | |
3183 | static void tlan_ee_receive_byte(u16 io_base, u8 *data, int stop) |
3184 | { |
3185 | u8 place; |
3186 | u16 sio; |
3187 | |
3188 | outw(TLAN_NET_SIO, port: io_base + TLAN_DIO_ADR); |
3189 | sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO; |
3190 | *data = 0; |
3191 | |
3192 | /* Assume clock is low, tx is enabled; */ |
3193 | tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio); |
3194 | for (place = 0x80; place; place >>= 1) { |
3195 | tlan_set_bit(TLAN_NET_SIO_ECLOK, sio); |
3196 | if (tlan_get_bit(TLAN_NET_SIO_EDATA, sio)) |
3197 | *data |= place; |
3198 | tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio); |
3199 | } |
3200 | |
3201 | tlan_set_bit(TLAN_NET_SIO_ETXEN, sio); |
3202 | if (!stop) { |
3203 | tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); /* ack = 0 */ |
3204 | tlan_set_bit(TLAN_NET_SIO_ECLOK, sio); |
3205 | tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio); |
3206 | } else { |
3207 | tlan_set_bit(TLAN_NET_SIO_EDATA, sio); /* no ack = 1 (?) */ |
3208 | tlan_set_bit(TLAN_NET_SIO_ECLOK, sio); |
3209 | tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio); |
3210 | /* STOP, raise data while clock is high */ |
3211 | tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); |
3212 | tlan_set_bit(TLAN_NET_SIO_ECLOK, sio); |
3213 | tlan_set_bit(TLAN_NET_SIO_EDATA, sio); |
3214 | } |
3215 | |
3216 | } |
3217 | |
3218 | |
3219 | |
3220 | |
3221 | /*************************************************************** |
3222 | * tlan_ee_read_byte |
3223 | * |
3224 | * Returns: |
3225 | * No error = 0, else, the stage at which the error |
3226 | * occurred. |
3227 | * Parms: |
3228 | * io_base The IO port base address for the |
3229 | * TLAN device with the EEPROM to |
3230 | * use. |
3231 | * ee_addr The address of the byte in the |
3232 | * EEPROM whose contents are to be |
3233 | * retrieved. |
3234 | * data An address to a char to hold the |
3235 | * data obtained from the EEPROM. |
3236 | * |
3237 | * This function reads a byte of information from an byte |
3238 | * cell in the EEPROM. |
3239 | * |
3240 | **************************************************************/ |
3241 | |
3242 | static int tlan_ee_read_byte(struct net_device *dev, u8 ee_addr, u8 *data) |
3243 | { |
3244 | int err; |
3245 | struct tlan_priv *priv = netdev_priv(dev); |
3246 | unsigned long flags = 0; |
3247 | int ret = 0; |
3248 | |
3249 | spin_lock_irqsave(&priv->lock, flags); |
3250 | |
3251 | tlan_ee_send_start(io_base: dev->base_addr); |
3252 | err = tlan_ee_send_byte(io_base: dev->base_addr, data: 0xa0, TLAN_EEPROM_ACK); |
3253 | if (err) { |
3254 | ret = 1; |
3255 | goto fail; |
3256 | } |
3257 | err = tlan_ee_send_byte(io_base: dev->base_addr, data: ee_addr, TLAN_EEPROM_ACK); |
3258 | if (err) { |
3259 | ret = 2; |
3260 | goto fail; |
3261 | } |
3262 | tlan_ee_send_start(io_base: dev->base_addr); |
3263 | err = tlan_ee_send_byte(io_base: dev->base_addr, data: 0xa1, TLAN_EEPROM_ACK); |
3264 | if (err) { |
3265 | ret = 3; |
3266 | goto fail; |
3267 | } |
3268 | tlan_ee_receive_byte(io_base: dev->base_addr, data, TLAN_EEPROM_STOP); |
3269 | fail: |
3270 | spin_unlock_irqrestore(lock: &priv->lock, flags); |
3271 | |
3272 | return ret; |
3273 | |
3274 | } |
3275 | |
3276 | |
3277 | |
3278 | |