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Merge tag 'mmc-v4.15-2' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
[mirror_ubuntu-bionic-kernel.git] / drivers / net / ethernet / ti / tlan.c
CommitLineData
1da177e4
LT		 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 *
1da177e4
LT		 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 *
c659c38b 28 ******************************************************************************/
1da177e4 29
50624aab
JP		 30#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
31
a6b7a407 32#include <linux/hardirq.h>
1da177e4
LT		 33#include <linux/module.h>
34#include <linux/init.h>
a6b7a407 35#include <linux/interrupt.h>
1da177e4
LT		 36#include <linux/ioport.h>
37#include <linux/eisa.h>
38#include <linux/pci.h>
1e7f0bd8 39#include <linux/dma-mapping.h>
1da177e4
LT		 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
1da177e4
LT		 49
50/* For removing EISA devices */
c659c38b 51static struct net_device *tlan_eisa_devices;
1da177e4 52
c659c38b 53static int tlan_devices_installed;
1da177e4
LT		 54
55/* Set speed, duplex and aui settings */
56static int aui[MAX_TLAN_BOARDS];
57static int duplex[MAX_TLAN_BOARDS];
58static int speed[MAX_TLAN_BOARDS];
59static int boards_found;
15efa9bb
SH		 60module_param_array(aui, int, NULL, 0);
61module_param_array(duplex, int, NULL, 0);
62module_param_array(speed, int, NULL, 0);
63MODULE_PARM_DESC(aui, "ThunderLAN use AUI port(s) (0-1)");
c659c38b
SA		 64MODULE_PARM_DESC(duplex,
65 "ThunderLAN duplex setting(s) (0-default, 1-half, 2-full)");
50624aab 66MODULE_PARM_DESC(speed, "ThunderLAN port speed setting(s) (0,10,100)");
1da177e4
LT		 67
68MODULE_AUTHOR("Maintainer: Samuel Chessman <chessman@tux.org>");
69MODULE_DESCRIPTION("Driver for TI ThunderLAN based ethernet PCI adapters");
70MODULE_LICENSE("GPL");
71
1da177e4
LT		 72/* Turn on debugging. See Documentation/networking/tlan.txt for details */
73static int debug;
15efa9bb
SH		 74module_param(debug, int, 0);
75MODULE_PARM_DESC(debug, "ThunderLAN debug mask");
1da177e4 76
c659c38b 77static const char tlan_signature[] = "TLAN";
fa6d5d4f 78static const char tlan_banner[] = "ThunderLAN driver v1.17\n";
1da177e4
LT		 79static int tlan_have_pci;
80static int tlan_have_eisa;
81
c659c38b
SA		 82static const char * const media[] = {
83 "10BaseT-HD", "10BaseT-FD", "100baseTx-HD",
84 "100BaseTx-FD", "100BaseT4", NULL
1da177e4
LT		 85};
86
87static struct board {
c659c38b
SA		 88 const char *device_label;
89 u32 flags;
90 u16 addr_ofs;
1da177e4
LT		 91} board_info[] = {
92 { "Compaq Netelligent 10 T PCI UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
c659c38b
SA		 93 { "Compaq Netelligent 10/100 TX PCI UTP",
94 TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
1da177e4 95 { "Compaq Integrated NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
dfc2c0a6
SH		 96 { "Compaq NetFlex-3/P",
97 TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 },
1da177e4 98 { "Compaq NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
dfc2c0a6
SH		 99 { "Compaq Netelligent Integrated 10/100 TX UTP",
100 TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
c659c38b
SA		 101 { "Compaq Netelligent Dual 10/100 TX PCI UTP",
102 TLAN_ADAPTER_NONE, 0x83 },
103 { "Compaq Netelligent 10/100 TX Embedded UTP",
104 TLAN_ADAPTER_NONE, 0x83 },
1da177e4 105 { "Olicom OC-2183/2185", TLAN_ADAPTER_USE_INTERN_10, 0x83 },
eb522bb4
OZ		 106 { "Olicom OC-2325", TLAN_ADAPTER_ACTIVITY_LED |
107 TLAN_ADAPTER_UNMANAGED_PHY, 0xf8 },
108 { "Olicom OC-2326", TLAN_ADAPTER_ACTIVITY_LED |
109 TLAN_ADAPTER_USE_INTERN_10, 0xf8 },
1da177e4 110 { "Compaq Netelligent 10/100 TX UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
c659c38b 111 { "Compaq Netelligent 10 T/2 PCI UTP/coax", TLAN_ADAPTER_NONE, 0x83 },
dfc2c0a6 112 { "Compaq NetFlex-3/E",
c659c38b 113 TLAN_ADAPTER_ACTIVITY_LED | /* EISA card */
dfc2c0a6 114 TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 },
c659c38b
SA		 115 { "Compaq NetFlex-3/E",
116 TLAN_ADAPTER_ACTIVITY_LED, 0x83 }, /* EISA card */
1da177e4
LT		 117};
118
9baa3c34 119static const struct pci_device_id tlan_pci_tbl[] = {
1da177e4 120 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL10,
c659c38b 121 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
1da177e4 122 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100,
c659c38b 123 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 },
1da177e4 124 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3I,
c659c38b 125 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2 },
1da177e4 126 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_THUNDER,
c659c38b 127 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3 },
1da177e4 128 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3B,
c659c38b 129 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 },
1da177e4 130 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100PI,
c659c38b 131 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5 },
1da177e4 132 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100D,
c659c38b 133 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 6 },
1da177e4 134 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100I,
c659c38b 135 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 7 },
1da177e4 136 { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2183,
c659c38b 137 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 8 },
1da177e4 138 { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2325,
c659c38b 139 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 9 },
1da177e4 140 { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2326,
c659c38b 141 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 10 },
1da177e4 142 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_100_WS_5100,
c659c38b 143 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 11 },
1da177e4 144 { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_T2,
c659c38b 145 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 12 },
1da177e4
LT		 146 { 0,}
147};
6aa20a22 148MODULE_DEVICE_TABLE(pci, tlan_pci_tbl);
1da177e4 149
c659c38b
SA		 150static void tlan_eisa_probe(void);
151static void tlan_eisa_cleanup(void);
152static int tlan_init(struct net_device *);
153static int tlan_open(struct net_device *dev);
154static netdev_tx_t tlan_start_tx(struct sk_buff *, struct net_device *);
155static irqreturn_t tlan_handle_interrupt(int, void *);
156static int tlan_close(struct net_device *);
157static struct net_device_stats *tlan_get_stats(struct net_device *);
158static void tlan_set_multicast_list(struct net_device *);
159static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
160static int tlan_probe1(struct pci_dev *pdev, long ioaddr,
161 int irq, int rev, const struct pci_device_id *ent);
162static void tlan_tx_timeout(struct net_device *dev);
163static void tlan_tx_timeout_work(struct work_struct *work);
164static int tlan_init_one(struct pci_dev *pdev,
165 const struct pci_device_id *ent);
166
167static u32 tlan_handle_tx_eof(struct net_device *, u16);
168static u32 tlan_handle_stat_overflow(struct net_device *, u16);
169static u32 tlan_handle_rx_eof(struct net_device *, u16);
170static u32 tlan_handle_dummy(struct net_device *, u16);
171static u32 tlan_handle_tx_eoc(struct net_device *, u16);
172static u32 tlan_handle_status_check(struct net_device *, u16);
173static u32 tlan_handle_rx_eoc(struct net_device *, u16);
174
0010e3f8
KC		 175static void tlan_timer(struct timer_list *t);
176static void tlan_phy_monitor(struct timer_list *t);
c659c38b
SA		 177
178static void tlan_reset_lists(struct net_device *);
179static void tlan_free_lists(struct net_device *);
180static void tlan_print_dio(u16);
181static void tlan_print_list(struct tlan_list *, char *, int);
182static void tlan_read_and_clear_stats(struct net_device *, int);
183static void tlan_reset_adapter(struct net_device *);
184static void tlan_finish_reset(struct net_device *);
185static void tlan_set_mac(struct net_device *, int areg, char *mac);
186
187static void tlan_phy_print(struct net_device *);
188static void tlan_phy_detect(struct net_device *);
189static void tlan_phy_power_down(struct net_device *);
190static void tlan_phy_power_up(struct net_device *);
191static void tlan_phy_reset(struct net_device *);
192static void tlan_phy_start_link(struct net_device *);
193static void tlan_phy_finish_auto_neg(struct net_device *);
1da177e4
LT		 194
195/*
c659c38b
SA		 196 static int tlan_phy_nop(struct net_device *);
197 static int tlan_phy_internal_check(struct net_device *);
198 static int tlan_phy_internal_service(struct net_device *);
199 static int tlan_phy_dp83840a_check(struct net_device *);
1da177e4
LT		 200*/
201
c659c38b
SA		 202static bool tlan_mii_read_reg(struct net_device *, u16, u16, u16 *);
203static void tlan_mii_send_data(u16, u32, unsigned);
204static void tlan_mii_sync(u16);
205static void tlan_mii_write_reg(struct net_device *, u16, u16, u16);
1da177e4 206
c659c38b
SA		 207static void tlan_ee_send_start(u16);
208static int tlan_ee_send_byte(u16, u8, int);
209static void tlan_ee_receive_byte(u16, u8 *, int);
210static int tlan_ee_read_byte(struct net_device *, u8, u8 *);
1da177e4
LT		 211
212
93e16847 213static inline void
c659c38b 214tlan_store_skb(struct tlan_list *tag, struct sk_buff *skb)
1da177e4
LT		 215{
216 unsigned long addr = (unsigned long)skb;
93e16847
SH		 217 tag->buffer[9].address = addr;
218 tag->buffer[8].address = upper_32_bits(addr);
1da177e4
LT		 219}
220
93e16847 221static inline struct sk_buff *
c659c38b 222tlan_get_skb(const struct tlan_list *tag)
1da177e4 223{
93e16847
SH		 224 unsigned long addr;
225
0d63bea2 226 addr = tag->buffer[9].address;
da3a9e9e 227 addr |= ((unsigned long) tag->buffer[8].address << 16) << 16;
1da177e4
LT		 228 return (struct sk_buff *) addr;
229}
230
c659c38b
SA		 231static u32
232(*tlan_int_vector[TLAN_INT_NUMBER_OF_INTS])(struct net_device *, u16) = {
a3ccc789 233 NULL,
c659c38b
SA		 234 tlan_handle_tx_eof,
235 tlan_handle_stat_overflow,
236 tlan_handle_rx_eof,
237 tlan_handle_dummy,
238 tlan_handle_tx_eoc,
239 tlan_handle_status_check,
240 tlan_handle_rx_eoc
1da177e4
LT		 241};
242
243static inline void
c659c38b 244tlan_set_timer(struct net_device *dev, u32 ticks, u32 type)
1da177e4 245{
c659c38b 246 struct tlan_priv *priv = netdev_priv(dev);
1da177e4 247 unsigned long flags = 0;
6aa20a22 248
1da177e4
LT		 249 if (!in_irq())
250 spin_lock_irqsave(&priv->lock, flags);
c659c38b
SA		 251 if (priv->timer.function != NULL &&
252 priv->timer_type != TLAN_TIMER_ACTIVITY) {
1da177e4
LT		 253 if (!in_irq())
254 spin_unlock_irqrestore(&priv->lock, flags);
255 return;
256 }
841b86f3 257 priv->timer.function = tlan_timer;
1da177e4
LT		 258 if (!in_irq())
259 spin_unlock_irqrestore(&priv->lock, flags);
260
c659c38b
SA		 261 priv->timer_set_at = jiffies;
262 priv->timer_type = type;
1da177e4 263 mod_timer(&priv->timer, jiffies + ticks);
6aa20a22 264
c659c38b 265}
1da177e4
LT		 266
267
268/*****************************************************************************
269******************************************************************************
270
c659c38b 271ThunderLAN driver primary functions
1da177e4 272
c659c38b 273these functions are more or less common to all linux network drivers.
1da177e4
LT		 274
275******************************************************************************
276*****************************************************************************/
277
278
279
280
281
c659c38b
SA		 282/***************************************************************
283 * tlan_remove_one
284 *
285 * Returns:
286 * Nothing
287 * Parms:
288 * None
289 *
290 * Goes through the TLanDevices list and frees the device
291 * structs and memory associated with each device (lists
292 * and buffers). It also ureserves the IO port regions
293 * associated with this device.
294 *
295 **************************************************************/
1da177e4
LT		 296
297
36915876 298static void tlan_remove_one(struct pci_dev *pdev)
1da177e4 299{
c659c38b
SA		 300 struct net_device *dev = pci_get_drvdata(pdev);
301 struct tlan_priv *priv = netdev_priv(dev);
6aa20a22 302
c659c38b 303 unregister_netdev(dev);
1da177e4 304
c659c38b
SA		 305 if (priv->dma_storage) {
306 pci_free_consistent(priv->pci_dev,
307 priv->dma_size, priv->dma_storage,
308 priv->dma_storage_dma);
1da177e4
LT		 309 }
310
311#ifdef CONFIG_PCI
312 pci_release_regions(pdev);
313#endif
6aa20a22 314
c659c38b 315 free_netdev(dev);
6aa20a22 316
1e0a8b13 317 cancel_work_sync(&priv->tlan_tqueue);
6aa20a22 318}
1da177e4 319
fa6d5d4f
SA		 320static 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
331static void tlan_stop(struct net_device *dev)
332{
333 struct tlan_priv *priv = netdev_priv(dev);
334
c0a87c22 335 del_timer_sync(&priv->media_timer);
fa6d5d4f
SA		 336 tlan_read_and_clear_stats(dev, TLAN_RECORD);
337 outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
338 /* Reset and power down phy */
339 tlan_reset_adapter(dev);
340 if (priv->timer.function != NULL) {
341 del_timer_sync(&priv->timer);
342 priv->timer.function = NULL;
343 }
344}
345
346#ifdef CONFIG_PM
347
348static int tlan_suspend(struct pci_dev *pdev, pm_message_t state)
349{
350 struct net_device *dev = pci_get_drvdata(pdev);
351
352 if (netif_running(dev))
353 tlan_stop(dev);
354
355 netif_device_detach(dev);
356 pci_save_state(pdev);
357 pci_disable_device(pdev);
358 pci_wake_from_d3(pdev, false);
359 pci_set_power_state(pdev, PCI_D3hot);
360
361 return 0;
362}
363
364static int tlan_resume(struct pci_dev *pdev)
365{
366 struct net_device *dev = pci_get_drvdata(pdev);
e697b16b 367 int rc = pci_enable_device(pdev);
fa6d5d4f 368
e697b16b
OZ		 369 if (rc)
370 return rc;
fa6d5d4f 371 pci_restore_state(pdev);
1ca01512 372 pci_enable_wake(pdev, PCI_D0, 0);
fa6d5d4f
SA		 373 netif_device_attach(dev);
374
375 if (netif_running(dev))
376 tlan_start(dev);
377
378 return 0;
379}
380
381#else /* CONFIG_PM */
382
383#define tlan_suspend NULL
384#define tlan_resume NULL
385
386#endif /* CONFIG_PM */
387
388
1da177e4
LT		 389static struct pci_driver tlan_driver = {
390 .name = "tlan",
391 .id_table = tlan_pci_tbl,
392 .probe = tlan_init_one,
36915876 393 .remove = tlan_remove_one,
fa6d5d4f
SA		 394 .suspend = tlan_suspend,
395 .resume = tlan_resume,
1da177e4
LT		 396};
397
398static int __init tlan_probe(void)
399{
6c04a515 400 int rc = -ENODEV;
6aa20a22 401
50624aab 402 pr_info("%s", tlan_banner);
6aa20a22 403
1da177e4 404 TLAN_DBG(TLAN_DEBUG_PROBE, "Starting PCI Probe....\n");
6aa20a22 405
1da177e4
LT		 406 /* Use new style PCI probing. Now the kernel will
407 do most of this for us */
6c04a515
LP		 408 rc = pci_register_driver(&tlan_driver);
409
410 if (rc != 0) {
50624aab 411 pr_err("Could not register pci driver\n");
6c04a515
LP		 412 goto err_out_pci_free;
413 }
1da177e4
LT		 414
415 TLAN_DBG(TLAN_DEBUG_PROBE, "Starting EISA Probe....\n");
c659c38b 416 tlan_eisa_probe();
6aa20a22 417
50624aab
JP		 418 pr_info("%d device%s installed, PCI: %d EISA: %d\n",
419 tlan_devices_installed, tlan_devices_installed == 1 ? "" : "s",
420 tlan_have_pci, tlan_have_eisa);
1da177e4 421
c659c38b 422 if (tlan_devices_installed == 0) {
6c04a515
LP		 423 rc = -ENODEV;
424 goto err_out_pci_unreg;
1da177e4
LT		 425 }
426 return 0;
6c04a515
LP		 427
428err_out_pci_unreg:
429 pci_unregister_driver(&tlan_driver);
430err_out_pci_free:
6c04a515 431 return rc;
1da177e4 432}
6aa20a22 433
1da177e4 434
36915876 435static int tlan_init_one(struct pci_dev *pdev,
c659c38b 436 const struct pci_device_id *ent)
1da177e4 437{
c659c38b 438 return tlan_probe1(pdev, -1, -1, 0, ent);
1da177e4
LT		 439}
440
441
442/*
c659c38b
SA		 443***************************************************************
444* tlan_probe1
445*
446* Returns:
447* 0 on success, error code on error
448* Parms:
449* none
450*
451* The name is lower case to fit in with all the rest of
452* the netcard_probe names. This function looks for
453* another TLan based adapter, setting it up with the
454* allocated device struct if one is found.
455* tlan_probe has been ported to the new net API and
456* now allocates its own device structure. This function
457* is also used by modules.
458*
459**************************************************************/
460
1dd06ae8
GKH		 461static int tlan_probe1(struct pci_dev *pdev, long ioaddr, int irq, int rev,
462 const struct pci_device_id *ent)
1da177e4
LT		 463{
464
465 struct net_device *dev;
c659c38b 466 struct tlan_priv *priv;
1da177e4
LT		 467 u16 device_id;
468 int reg, rc = -ENODEV;
469
ad9f6713 470#ifdef CONFIG_PCI
1da177e4
LT		 471 if (pdev) {
472 rc = pci_enable_device(pdev);
473 if (rc)
474 return rc;
475
c659c38b 476 rc = pci_request_regions(pdev, tlan_signature);
1da177e4 477 if (rc) {
50624aab 478 pr_err("Could not reserve IO regions\n");
1da177e4
LT		 479 goto err_out;
480 }
481 }
ad9f6713 482#endif /* CONFIG_PCI */
1da177e4 483
c659c38b 484 dev = alloc_etherdev(sizeof(struct tlan_priv));
1da177e4 485 if (dev == NULL) {
1da177e4
LT		 486 rc = -ENOMEM;
487 goto err_out_regions;
488 }
1da177e4 489 SET_NETDEV_DEV(dev, &pdev->dev);
6aa20a22 490
1da177e4
LT		 491 priv = netdev_priv(dev);
492
c659c38b 493 priv->pci_dev = pdev;
c4028958 494 priv->dev = dev;
6aa20a22 495
1da177e4
LT		 496 /* Is this a PCI device? */
497 if (pdev) {
c659c38b 498 u32 pci_io_base = 0;
1da177e4
LT		 499
500 priv->adapter = &board_info[ent->driver_data];
501
284901a9 502 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
1da177e4 503 if (rc) {
50624aab 504 pr_err("No suitable PCI mapping available\n");
1da177e4
LT		 505 goto err_out_free_dev;
506 }
507
c659c38b 508 for (reg = 0; reg <= 5; reg++) {
1da177e4
LT		 509 if (pci_resource_flags(pdev, reg) & IORESOURCE_IO) {
510 pci_io_base = pci_resource_start(pdev, reg);
c659c38b
SA		 511 TLAN_DBG(TLAN_DEBUG_GNRL,
512 "IO mapping is available at %x.\n",
513 pci_io_base);
1da177e4
LT		 514 break;
515 }
516 }
517 if (!pci_io_base) {
50624aab 518 pr_err("No IO mappings available\n");
1da177e4
LT		 519 rc = -EIO;
520 goto err_out_free_dev;
521 }
6aa20a22 522
1da177e4
LT		 523 dev->base_addr = pci_io_base;
524 dev->irq = pdev->irq;
c659c38b 525 priv->adapter_rev = pdev->revision;
1da177e4
LT		 526 pci_set_master(pdev);
527 pci_set_drvdata(pdev, dev);
528
529 } else { /* EISA card */
530 /* This is a hack. We need to know which board structure
531 * is suited for this adapter */
532 device_id = inw(ioaddr + EISA_ID2);
1da177e4 533 if (device_id == 0x20F1) {
c659c38b
SA		 534 priv->adapter = &board_info[13]; /* NetFlex-3/E */
535 priv->adapter_rev = 23; /* TLAN 2.3 */
1da177e4
LT		 536 } else {
537 priv->adapter = &board_info[14];
c659c38b 538 priv->adapter_rev = 10; /* TLAN 1.0 */
1da177e4
LT		 539 }
540 dev->base_addr = ioaddr;
541 dev->irq = irq;
542 }
543
544 /* Kernel parameters */
545 if (dev->mem_start) {
546 priv->aui = dev->mem_start & 0x01;
dfc2c0a6
SH		 547 priv->duplex = ((dev->mem_start & 0x06) == 0x06) ? 0
548 : (dev->mem_start & 0x06) >> 1;
549 priv->speed = ((dev->mem_start & 0x18) == 0x18) ? 0
550 : (dev->mem_start & 0x18) >> 3;
6aa20a22 551
c659c38b 552 if (priv->speed == 0x1)
1da177e4 553 priv->speed = TLAN_SPEED_10;
c659c38b 554 else if (priv->speed == 0x2)
1da177e4 555 priv->speed = TLAN_SPEED_100;
c659c38b 556
1da177e4
LT		 557 debug = priv->debug = dev->mem_end;
558 } else {
559 priv->aui = aui[boards_found];
560 priv->speed = speed[boards_found];
561 priv->duplex = duplex[boards_found];
562 priv->debug = debug;
563 }
6aa20a22 564
1da177e4
LT		 565 /* This will be used when we get an adapter error from
566 * within our irq handler */
c659c38b 567 INIT_WORK(&priv->tlan_tqueue, tlan_tx_timeout_work);
1da177e4
LT		 568
569 spin_lock_init(&priv->lock);
6aa20a22 570
c659c38b 571 rc = tlan_init(dev);
1da177e4 572 if (rc) {
50624aab 573 pr_err("Could not set up device\n");
1da177e4
LT		 574 goto err_out_free_dev;
575 }
576
577 rc = register_netdev(dev);
578 if (rc) {
50624aab 579 pr_err("Could not register device\n");
1da177e4
LT		 580 goto err_out_uninit;
581 }
582
6aa20a22 583
c659c38b 584 tlan_devices_installed++;
1da177e4 585 boards_found++;
6aa20a22 586
1da177e4
LT		 587 /* pdev is NULL if this is an EISA device */
588 if (pdev)
589 tlan_have_pci++;
590 else {
c659c38b
SA		 591 priv->next_device = tlan_eisa_devices;
592 tlan_eisa_devices = dev;
1da177e4
LT		 593 tlan_have_eisa++;
594 }
6aa20a22 595
50624aab
JP		 596 netdev_info(dev, "irq=%2d, io=%04x, %s, Rev. %d\n",
597 (int)dev->irq,
598 (int)dev->base_addr,
599 priv->adapter->device_label,
600 priv->adapter_rev);
1da177e4
LT		 601 return 0;
602
603err_out_uninit:
c659c38b
SA		 604 pci_free_consistent(priv->pci_dev, priv->dma_size, priv->dma_storage,
605 priv->dma_storage_dma);
1da177e4
LT		 606err_out_free_dev:
607 free_netdev(dev);
608err_out_regions:
609#ifdef CONFIG_PCI
610 if (pdev)
611 pci_release_regions(pdev);
1da177e4 612err_out:
1e09c106 613#endif
1da177e4
LT		 614 if (pdev)
615 pci_disable_device(pdev);
616 return rc;
617}
618
619
c659c38b 620static void tlan_eisa_cleanup(void)
1da177e4
LT		 621{
622 struct net_device *dev;
c659c38b 623 struct tlan_priv *priv;
6aa20a22 624
c659c38b
SA		 625 while (tlan_have_eisa) {
626 dev = tlan_eisa_devices;
1da177e4 627 priv = netdev_priv(dev);
c659c38b
SA		 628 if (priv->dma_storage) {
629 pci_free_consistent(priv->pci_dev, priv->dma_size,
630 priv->dma_storage,
631 priv->dma_storage_dma);
1da177e4 632 }
c659c38b
SA		 633 release_region(dev->base_addr, 0x10);
634 unregister_netdev(dev);
635 tlan_eisa_devices = priv->next_device;
636 free_netdev(dev);
1da177e4
LT		 637 tlan_have_eisa--;
638 }
639}
6aa20a22
JG		 640
641
1da177e4
LT		 642static void __exit tlan_exit(void)
643{
644 pci_unregister_driver(&tlan_driver);
645
646 if (tlan_have_eisa)
c659c38b 647 tlan_eisa_cleanup();
1da177e4 648
1da177e4
LT		 649}
650
651
652/* Module loading/unloading */
653module_init(tlan_probe);
654module_exit(tlan_exit);
655
656
657
c659c38b
SA		 658/**************************************************************
659 * tlan_eisa_probe
660 *
661 * Returns: 0 on success, 1 otherwise
662 *
663 * Parms: None
664 *
665 *
666 * This functions probes for EISA devices and calls
667 * TLan_probe1 when one is found.
668 *
669 *************************************************************/
1da177e4 670
c659c38b 671static void __init tlan_eisa_probe(void)
1da177e4 672{
c659c38b
SA		 673 long ioaddr;
674 int rc = -ENODEV;
675 int irq;
1da177e4
LT		 676 u16 device_id;
677
6aa20a22 678 if (!EISA_bus) {
1da177e4
LT		 679 TLAN_DBG(TLAN_DEBUG_PROBE, "No EISA bus present\n");
680 return;
681 }
6aa20a22 682
1da177e4
LT		 683 /* Loop through all slots of the EISA bus */
684 for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) {
6aa20a22 685
c659c38b
SA		 686 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
687 (int) ioaddr + 0xc80, inw(ioaddr + EISA_ID));
688 TLAN_DBG(TLAN_DEBUG_PROBE, "EISA_ID 0x%4x: 0x%4x\n",
689 (int) ioaddr + 0xc82, inw(ioaddr + EISA_ID2));
1da177e4
LT		 690
691
c659c38b
SA		 692 TLAN_DBG(TLAN_DEBUG_PROBE,
693 "Probing for EISA adapter at IO: 0x%4x : ",
694 (int) ioaddr);
695 if (request_region(ioaddr, 0x10, tlan_signature) == NULL)
1da177e4
LT		 696 goto out;
697
6aa20a22 698 if (inw(ioaddr + EISA_ID) != 0x110E) {
1da177e4
LT		 699 release_region(ioaddr, 0x10);
700 goto out;
701 }
6aa20a22 702
1da177e4 703 device_id = inw(ioaddr + EISA_ID2);
6aa20a22 704 if (device_id != 0x20F1 && device_id != 0x40F1) {
c659c38b 705 release_region(ioaddr, 0x10);
1da177e4
LT		 706 goto out;
707 }
6aa20a22 708
c659c38b
SA		 709 /* check if adapter is enabled */
710 if (inb(ioaddr + EISA_CR) != 0x1) {
711 release_region(ioaddr, 0x10);
1da177e4
LT		 712 goto out2;
713 }
6aa20a22
JG		 714
715 if (debug == 0x10)
50624aab 716 pr_info("Found one\n");
1da177e4
LT		 717
718
719 /* Get irq from board */
c659c38b
SA		 720 switch (inb(ioaddr + 0xcc0)) {
721 case(0x10):
722 irq = 5;
723 break;
724 case(0x20):
725 irq = 9;
726 break;
727 case(0x40):
728 irq = 10;
729 break;
730 case(0x80):
731 irq = 11;
732 break;
733 default:
734 goto out;
6aa20a22
JG		 735 }
736
737
1da177e4 738 /* Setup the newly found eisa adapter */
c659c38b
SA		 739 rc = tlan_probe1(NULL, ioaddr, irq,
740 12, NULL);
1da177e4 741 continue;
6aa20a22 742
c659c38b
SA		 743out:
744 if (debug == 0x10)
50624aab 745 pr_info("None found\n");
c659c38b 746 continue;
1da177e4 747
c659c38b
SA		 748out2:
749 if (debug == 0x10)
50624aab 750 pr_info("Card found but it is not enabled, skipping\n");
c659c38b 751 continue;
6aa20a22 752
1da177e4
LT		 753 }
754
c659c38b 755}
1da177e4
LT		 756
757#ifdef CONFIG_NET_POLL_CONTROLLER
c659c38b 758static void tlan_poll(struct net_device *dev)
1da177e4
LT		 759{
760 disable_irq(dev->irq);
c659c38b 761 tlan_handle_interrupt(dev->irq, dev);
1da177e4
LT		 762 enable_irq(dev->irq);
763}
764#endif
765
c659c38b
SA		 766static const struct net_device_ops tlan_netdev_ops = {
767 .ndo_open = tlan_open,
768 .ndo_stop = tlan_close,
769 .ndo_start_xmit = tlan_start_tx,
770 .ndo_tx_timeout = tlan_tx_timeout,
771 .ndo_get_stats = tlan_get_stats,
afc4b13d 772 .ndo_set_rx_mode = tlan_set_multicast_list,
c659c38b 773 .ndo_do_ioctl = tlan_ioctl,
c659c38b 774 .ndo_set_mac_address = eth_mac_addr,
391c5e6e
SH		 775 .ndo_validate_addr = eth_validate_addr,
776#ifdef CONFIG_NET_POLL_CONTROLLER
c659c38b 777 .ndo_poll_controller = tlan_poll,
391c5e6e
SH		 778#endif
779};
6aa20a22 780
e36124d4
OZ		 781static void tlan_get_drvinfo(struct net_device *dev,
782 struct ethtool_drvinfo *info)
783{
784 struct tlan_priv *priv = netdev_priv(dev);
785
786 strlcpy(info->driver, KBUILD_MODNAME, sizeof(info->driver));
787 if (priv->pci_dev)
788 strlcpy(info->bus_info, pci_name(priv->pci_dev),
789 sizeof(info->bus_info));
790 else
791 strlcpy(info->bus_info, "EISA", sizeof(info->bus_info));
e36124d4
OZ		 792}
793
794static int tlan_get_eeprom_len(struct net_device *dev)
795{
796 return TLAN_EEPROM_SIZE;
797}
1da177e4 798
e36124d4
OZ		 799static int tlan_get_eeprom(struct net_device *dev,
800 struct ethtool_eeprom *eeprom, u8 *data)
801{
802 int i;
803
804 for (i = 0; i < TLAN_EEPROM_SIZE; i++)
805 if (tlan_ee_read_byte(dev, i, &data[i]))
806 return -EIO;
807
808 return 0;
809}
810
811static const struct ethtool_ops tlan_ethtool_ops = {
812 .get_drvinfo = tlan_get_drvinfo,
813 .get_link = ethtool_op_get_link,
814 .get_eeprom_len = tlan_get_eeprom_len,
815 .get_eeprom = tlan_get_eeprom,
816};
1da177e4 817
c659c38b
SA		 818/***************************************************************
819 * tlan_init
820 *
821 * Returns:
822 * 0 on success, error code otherwise.
823 * Parms:
824 * dev The structure of the device to be
825 * init'ed.
826 *
827 * This function completes the initialization of the
828 * device structure and driver. It reserves the IO
829 * addresses, allocates memory for the lists and bounce
830 * buffers, retrieves the MAC address from the eeprom
831 * and assignes the device's methods.
832 *
833 **************************************************************/
834
835static int tlan_init(struct net_device *dev)
1da177e4
LT		 836{
837 int dma_size;
c659c38b 838 int err;
1da177e4 839 int i;
c659c38b 840 struct tlan_priv *priv;
1da177e4
LT		 841
842 priv = netdev_priv(dev);
6aa20a22 843
c659c38b
SA		 844 dma_size = (TLAN_NUM_RX_LISTS + TLAN_NUM_TX_LISTS)
845 * (sizeof(struct tlan_list));
846 priv->dma_storage = pci_alloc_consistent(priv->pci_dev,
847 dma_size,
848 &priv->dma_storage_dma);
849 priv->dma_size = dma_size;
850
851 if (priv->dma_storage == NULL) {
50624aab 852 pr_err("Could not allocate lists and buffers for %s\n",
c659c38b 853 dev->name);
1da177e4
LT		 854 return -ENOMEM;
855 }
c659c38b
SA		 856 memset(priv->dma_storage, 0, dma_size);
857 priv->rx_list = (struct tlan_list *)
858 ALIGN((unsigned long)priv->dma_storage, 8);
859 priv->rx_list_dma = ALIGN(priv->dma_storage_dma, 8);
860 priv->tx_list = priv->rx_list + TLAN_NUM_RX_LISTS;
861 priv->tx_list_dma =
862 priv->rx_list_dma + sizeof(struct tlan_list)*TLAN_NUM_RX_LISTS;
93e16847 863
1da177e4 864 err = 0;
59be4ad6 865 for (i = 0; i < ETH_ALEN; i++)
c659c38b
SA		 866 err |= tlan_ee_read_byte(dev,
867 (u8) priv->adapter->addr_ofs + i,
868 (u8 *) &dev->dev_addr[i]);
869 if (err) {
50624aab
JP		 870 pr_err("%s: Error reading MAC from eeprom: %d\n",
871 dev->name, err);
1da177e4 872 }
59be4ad6
OZ		 873 /* Olicom OC-2325/OC-2326 have the address byte-swapped */
874 if (priv->adapter->addr_ofs == 0xf8) {
875 for (i = 0; i < ETH_ALEN; i += 2) {
876 char tmp = dev->dev_addr[i];
877 dev->dev_addr[i] = dev->dev_addr[i + 1];
878 dev->dev_addr[i + 1] = tmp;
879 }
880 }
1da177e4
LT		 881
882 netif_carrier_off(dev);
883
884 /* Device methods */
c659c38b 885 dev->netdev_ops = &tlan_netdev_ops;
e36124d4 886 dev->ethtool_ops = &tlan_ethtool_ops;
1da177e4
LT		 887 dev->watchdog_timeo = TX_TIMEOUT;
888
889 return 0;
890
c659c38b 891}
1da177e4
LT		 892
893
894
895
c659c38b
SA		 896/***************************************************************
897 * tlan_open
898 *
899 * Returns:
900 * 0 on success, error code otherwise.
901 * Parms:
902 * dev Structure of device to be opened.
903 *
904 * This routine puts the driver and TLAN adapter in a
905 * state where it is ready to send and receive packets.
906 * It allocates the IRQ, resets and brings the adapter
907 * out of reset, and allows interrupts. It also delays
908 * the startup for autonegotiation or sends a Rx GO
909 * command to the adapter, as appropriate.
910 *
911 **************************************************************/
1da177e4 912
c659c38b 913static int tlan_open(struct net_device *dev)
1da177e4 914{
c659c38b 915 struct tlan_priv *priv = netdev_priv(dev);
1da177e4 916 int err;
6aa20a22 917
c659c38b
SA		 918 priv->tlan_rev = tlan_dio_read8(dev->base_addr, TLAN_DEF_REVISION);
919 err = request_irq(dev->irq, tlan_handle_interrupt, IRQF_SHARED,
920 dev->name, dev);
6aa20a22 921
c659c38b 922 if (err) {
50624aab
JP		 923 netdev_err(dev, "Cannot open because IRQ %d is already in use\n",
924 dev->irq);
1da177e4
LT		 925 return err;
926 }
6aa20a22 927
0010e3f8
KC		 928 timer_setup(&priv->timer, NULL, 0);
929 timer_setup(&priv->media_timer, tlan_phy_monitor, 0);
6aa20a22 930
fa6d5d4f 931 tlan_start(dev);
1da177e4 932
c659c38b
SA		 933 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Opened. TLAN Chip Rev: %x\n",
934 dev->name, priv->tlan_rev);
1da177e4
LT		 935
936 return 0;
937
c659c38b 938}
1da177e4
LT		 939
940
941
c659c38b
SA		 942/**************************************************************
943 * tlan_ioctl
944 *
945 * Returns:
946 * 0 on success, error code otherwise
947 * Params:
948 * dev structure of device to receive ioctl.
949 *
950 * rq ifreq structure to hold userspace data.
951 *
952 * cmd ioctl command.
953 *
954 *
955 *************************************************************/
1da177e4 956
c659c38b 957static int tlan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
1da177e4 958{
c659c38b 959 struct tlan_priv *priv = netdev_priv(dev);
1da177e4 960 struct mii_ioctl_data *data = if_mii(rq);
c659c38b 961 u32 phy = priv->phy[priv->phy_num];
6aa20a22 962
c659c38b 963 if (!priv->phy_online)
1da177e4
LT		 964 return -EAGAIN;
965
c659c38b
SA		 966 switch (cmd) {
967 case SIOCGMIIPHY: /* get address of MII PHY in use. */
968 data->phy_id = phy;
1da177e4
LT		 969
970
c659c38b
SA		 971 case SIOCGMIIREG: /* read MII PHY register. */
972 tlan_mii_read_reg(dev, data->phy_id & 0x1f,
973 data->reg_num & 0x1f, &data->val_out);
974 return 0;
6aa20a22 975
1da177e4 976
c659c38b
SA		 977 case SIOCSMIIREG: /* write MII PHY register. */
978 tlan_mii_write_reg(dev, data->phy_id & 0x1f,
979 data->reg_num & 0x1f, data->val_in);
980 return 0;
981 default:
982 return -EOPNOTSUPP;
1da177e4 983 }
c659c38b 984}
1da177e4
LT		 985
986
c659c38b
SA		 987/***************************************************************
988 * tlan_tx_timeout
989 *
990 * Returns: nothing
991 *
992 * Params:
993 * dev structure of device which timed out
994 * during transmit.
995 *
996 **************************************************************/
1da177e4 997
c659c38b 998static void tlan_tx_timeout(struct net_device *dev)
1da177e4 999{
6aa20a22 1000
c659c38b 1001 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Transmit timed out.\n", dev->name);
6aa20a22 1002
1da177e4 1003 /* Ok so we timed out, lets see what we can do about it...*/
c659c38b
SA		 1004 tlan_free_lists(dev);
1005 tlan_reset_lists(dev);
1006 tlan_read_and_clear_stats(dev, TLAN_IGNORE);
1007 tlan_reset_adapter(dev);
860e9538 1008 netif_trans_update(dev); /* prevent tx timeout */
c659c38b 1009 netif_wake_queue(dev);
1da177e4
LT		 1010
1011}
6aa20a22 1012
1da177e4 1013
c659c38b
SA		 1014/***************************************************************
1015 * tlan_tx_timeout_work
1016 *
1017 * Returns: nothing
1018 *
1019 * Params:
1020 * work work item of device which timed out
1021 *
1022 **************************************************************/
c4028958 1023
c659c38b 1024static void tlan_tx_timeout_work(struct work_struct *work)
c4028958 1025{
c659c38b
SA		 1026 struct tlan_priv *priv =
1027 container_of(work, struct tlan_priv, tlan_tqueue);
c4028958 1028
c659c38b 1029 tlan_tx_timeout(priv->dev);
c4028958
DH		 1030}
1031
1032
1da177e4 1033
c659c38b
SA		 1034/***************************************************************
1035 * tlan_start_tx
1036 *
1037 * Returns:
1038 * 0 on success, non-zero on failure.
1039 * Parms:
1040 * skb A pointer to the sk_buff containing the
1041 * frame to be sent.
1042 * dev The device to send the data on.
1043 *
1044 * This function adds a frame to the Tx list to be sent
1045 * ASAP. First it verifies that the adapter is ready and
1046 * there is room in the queue. Then it sets up the next
1047 * available list, copies the frame to the corresponding
1048 * buffer. If the adapter Tx channel is idle, it gives
1049 * the adapter a Tx Go command on the list, otherwise it
1050 * sets the forward address of the previous list to point
1051 * to this one. Then it frees the sk_buff.
1052 *
1053 **************************************************************/
1054
1055static netdev_tx_t tlan_start_tx(struct sk_buff *skb, struct net_device *dev)
1da177e4 1056{
c659c38b 1057 struct tlan_priv *priv = netdev_priv(dev);
1da177e4 1058 dma_addr_t tail_list_phys;
c659c38b 1059 struct tlan_list *tail_list;
1da177e4 1060 unsigned long flags;
8953f128 1061 unsigned int txlen;
1da177e4 1062
c659c38b
SA		 1063 if (!priv->phy_online) {
1064 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s PHY is not ready\n",
1065 dev->name);
1da177e4 1066 dev_kfree_skb_any(skb);
6ed10654 1067 return NETDEV_TX_OK;
1da177e4
LT		 1068 }
1069
41873e9a 1070 if (skb_padto(skb, TLAN_MIN_FRAME_SIZE))
6ed10654 1071 return NETDEV_TX_OK;
8953f128 1072 txlen = max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE);
41873e9a 1073
c659c38b
SA		 1074 tail_list = priv->tx_list + priv->tx_tail;
1075 tail_list_phys =
1076 priv->tx_list_dma + sizeof(struct tlan_list)*priv->tx_tail;
6aa20a22 1077
c659c38b
SA		 1078 if (tail_list->c_stat != TLAN_CSTAT_UNUSED) {
1079 TLAN_DBG(TLAN_DEBUG_TX,
1080 "TRANSMIT: %s is busy (Head=%d Tail=%d)\n",
1081 dev->name, priv->tx_head, priv->tx_tail);
1da177e4 1082 netif_stop_queue(dev);
c659c38b 1083 priv->tx_busy_count++;
5b548140 1084 return NETDEV_TX_BUSY;
1da177e4
LT		 1085 }
1086
1087 tail_list->forward = 0;
1088
c659c38b 1089 tail_list->buffer[0].address = pci_map_single(priv->pci_dev,
5eeabf51
SA		 1090 skb->data, txlen,
1091 PCI_DMA_TODEVICE);
c659c38b 1092 tlan_store_skb(tail_list, skb);
1da177e4 1093
c659c38b 1094 tail_list->frame_size = (u16) txlen;
8953f128 1095 tail_list->buffer[0].count = TLAN_LAST_BUFFER | (u32) txlen;
41873e9a
SH		 1096 tail_list->buffer[1].count = 0;
1097 tail_list->buffer[1].address = 0;
1da177e4
LT		 1098
1099 spin_lock_irqsave(&priv->lock, flags);
c659c38b
SA		 1100 tail_list->c_stat = TLAN_CSTAT_READY;
1101 if (!priv->tx_in_progress) {
1102 priv->tx_in_progress = 1;
1103 TLAN_DBG(TLAN_DEBUG_TX,
1104 "TRANSMIT: Starting TX on buffer %d\n",
1105 priv->tx_tail);
1106 outl(tail_list_phys, dev->base_addr + TLAN_CH_PARM);
1107 outl(TLAN_HC_GO, dev->base_addr + TLAN_HOST_CMD);
1da177e4 1108 } else {
c659c38b
SA		 1109 TLAN_DBG(TLAN_DEBUG_TX,
1110 "TRANSMIT: Adding buffer %d to TX channel\n",
1111 priv->tx_tail);
1112 if (priv->tx_tail == 0) {
1113 (priv->tx_list + (TLAN_NUM_TX_LISTS - 1))->forward
dfc2c0a6 1114 = tail_list_phys;
1da177e4 1115 } else {
c659c38b 1116 (priv->tx_list + (priv->tx_tail - 1))->forward
dfc2c0a6 1117 = tail_list_phys;
1da177e4
LT		 1118 }
1119 }
1120 spin_unlock_irqrestore(&priv->lock, flags);
1121
c659c38b 1122 CIRC_INC(priv->tx_tail, TLAN_NUM_TX_LISTS);
1da177e4 1123
6ed10654 1124 return NETDEV_TX_OK;
1da177e4 1125
c659c38b 1126}
1da177e4
LT		 1127
1128
1129
1130
c659c38b
SA		 1131/***************************************************************
1132 * tlan_handle_interrupt
1133 *
1134 * Returns:
1135 * Nothing
1136 * Parms:
1137 * irq The line on which the interrupt
1138 * occurred.
1139 * dev_id A pointer to the device assigned to
1140 * this irq line.
1141 *
1142 * This function handles an interrupt generated by its
1143 * assigned TLAN adapter. The function deactivates
1144 * interrupts on its adapter, records the type of
1145 * interrupt, executes the appropriate subhandler, and
1146 * acknowdges the interrupt to the adapter (thus
1147 * re-enabling adapter interrupts.
1148 *
1149 **************************************************************/
1da177e4 1150
c659c38b 1151static irqreturn_t tlan_handle_interrupt(int irq, void *dev_id)
1da177e4 1152{
a3ccc789 1153 struct net_device *dev = dev_id;
c659c38b 1154 struct tlan_priv *priv = netdev_priv(dev);
1da177e4 1155 u16 host_int;
a3ccc789 1156 u16 type;
1da177e4
LT		 1157
1158 spin_lock(&priv->lock);
1159
c659c38b
SA		 1160 host_int = inw(dev->base_addr + TLAN_HOST_INT);
1161 type = (host_int & TLAN_HI_IT_MASK) >> 2;
1162 if (type) {
a3ccc789
SH		 1163 u32 ack;
1164 u32 host_cmd;
1da177e4 1165
c659c38b
SA		 1166 outw(host_int, dev->base_addr + TLAN_HOST_INT);
1167 ack = tlan_int_vector[type](dev, host_int);
1da177e4 1168
c659c38b
SA		 1169 if (ack) {
1170 host_cmd = TLAN_HC_ACK | ack | (type << 18);
1171 outl(host_cmd, dev->base_addr + TLAN_HOST_CMD);
a3ccc789 1172 }
1da177e4
LT		 1173 }
1174
1175 spin_unlock(&priv->lock);
1176
a3ccc789 1177 return IRQ_RETVAL(type);
c659c38b 1178}
1da177e4
LT		 1179
1180
1181
1182
c659c38b
SA		 1183/***************************************************************
1184 * tlan_close
1185 *
1186 * Returns:
1187 * An error code.
1188 * Parms:
1189 * dev The device structure of the device to
1190 * close.
1191 *
1192 * This function shuts down the adapter. It records any
1193 * stats, puts the adapter into reset state, deactivates
1194 * its time as needed, and frees the irq it is using.
1195 *
1196 **************************************************************/
1da177e4 1197
c659c38b 1198static int tlan_close(struct net_device *dev)
1da177e4 1199{
fa6d5d4f 1200 tlan_stop(dev);
6aa20a22 1201
c659c38b
SA		 1202 free_irq(dev->irq, dev);
1203 tlan_free_lists(dev);
1204 TLAN_DBG(TLAN_DEBUG_GNRL, "Device %s closed.\n", dev->name);
1da177e4
LT		 1205
1206 return 0;
1207
c659c38b 1208}
1da177e4
LT		 1209
1210
1211
1212
c659c38b
SA		 1213/***************************************************************
1214 * tlan_get_stats
1215 *
1216 * Returns:
1217 * A pointer to the device's statistics structure.
1218 * Parms:
1219 * dev The device structure to return the
1220 * stats for.
1221 *
1222 * This function updates the devices statistics by reading
1223 * the TLAN chip's onboard registers. Then it returns the
1224 * address of the statistics structure.
1225 *
1226 **************************************************************/
1da177e4 1227
c659c38b 1228static struct net_device_stats *tlan_get_stats(struct net_device *dev)
1da177e4 1229{
c659c38b 1230 struct tlan_priv *priv = netdev_priv(dev);
1da177e4
LT		 1231 int i;
1232
1233 /* Should only read stats if open ? */
c659c38b 1234 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1da177e4 1235
c659c38b
SA		 1236 TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: %s EOC count = %d\n", dev->name,
1237 priv->rx_eoc_count);
1238 TLAN_DBG(TLAN_DEBUG_TX, "TRANSMIT: %s Busy count = %d\n", dev->name,
1239 priv->tx_busy_count);
1240 if (debug & TLAN_DEBUG_GNRL) {
1241 tlan_print_dio(dev->base_addr);
1242 tlan_phy_print(dev);
1da177e4 1243 }
c659c38b
SA		 1244 if (debug & TLAN_DEBUG_LIST) {
1245 for (i = 0; i < TLAN_NUM_RX_LISTS; i++)
1246 tlan_print_list(priv->rx_list + i, "RX", i);
1247 for (i = 0; i < TLAN_NUM_TX_LISTS; i++)
1248 tlan_print_list(priv->tx_list + i, "TX", i);
1da177e4 1249 }
6aa20a22 1250
f8f31544 1251 return &dev->stats;
1da177e4 1252
c659c38b 1253}
1da177e4
LT		 1254
1255
1256
1257
c659c38b
SA		 1258/***************************************************************
1259 * tlan_set_multicast_list
1260 *
1261 * Returns:
1262 * Nothing
1263 * Parms:
1264 * dev The device structure to set the
1265 * multicast list for.
1266 *
1267 * This function sets the TLAN adaptor to various receive
1268 * modes. If the IFF_PROMISC flag is set, promiscuous
1269 * mode is acitviated. Otherwise, promiscuous mode is
1270 * turned off. If the IFF_ALLMULTI flag is set, then
1271 * the hash table is set to receive all group addresses.
1272 * Otherwise, the first three multicast addresses are
1273 * stored in AREG_1-3, and the rest are selected via the
1274 * hash table, as necessary.
1275 *
1276 **************************************************************/
1da177e4 1277
c659c38b 1278static void tlan_set_multicast_list(struct net_device *dev)
6aa20a22 1279{
22bedad3 1280 struct netdev_hw_addr *ha;
1da177e4
LT		 1281 u32 hash1 = 0;
1282 u32 hash2 = 0;
1283 int i;
1284 u32 offset;
1285 u8 tmp;
1286
c659c38b
SA		 1287 if (dev->flags & IFF_PROMISC) {
1288 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1289 tlan_dio_write8(dev->base_addr,
1290 TLAN_NET_CMD, tmp | TLAN_NET_CMD_CAF);
1da177e4 1291 } else {
c659c38b
SA		 1292 tmp = tlan_dio_read8(dev->base_addr, TLAN_NET_CMD);
1293 tlan_dio_write8(dev->base_addr,
1294 TLAN_NET_CMD, tmp & ~TLAN_NET_CMD_CAF);
1295 if (dev->flags & IFF_ALLMULTI) {
1296 for (i = 0; i < 3; i++)
1297 tlan_set_mac(dev, i + 1, NULL);
1298 tlan_dio_write32(dev->base_addr, TLAN_HASH_1,
1299 0xffffffff);
1300 tlan_dio_write32(dev->base_addr, TLAN_HASH_2,
1301 0xffffffff);
1da177e4 1302 } else {
567ec874 1303 i = 0;
22bedad3 1304 netdev_for_each_mc_addr(ha, dev) {
c659c38b
SA		 1305 if (i < 3) {
1306 tlan_set_mac(dev, i + 1,
22bedad3 1307 (char *) &ha->addr);
1da177e4 1308 } else {
c659c38b
SA		 1309 offset =
1310 tlan_hash_func((u8 *)&ha->addr);
1311 if (offset < 32)
1312 hash1 |= (1 << offset);
1da177e4 1313 else
c659c38b 1314 hash2 |= (1 << (offset - 32));
1da177e4 1315 }
567ec874 1316 i++;
1da177e4 1317 }
c659c38b
SA		 1318 for ( ; i < 3; i++)
1319 tlan_set_mac(dev, i + 1, NULL);
1320 tlan_dio_write32(dev->base_addr, TLAN_HASH_1, hash1);
1321 tlan_dio_write32(dev->base_addr, TLAN_HASH_2, hash2);
1da177e4
LT		 1322 }
1323 }
1324
c659c38b 1325}
1da177e4
LT		 1326
1327
1328
1329/*****************************************************************************
1330******************************************************************************
1331
c659c38b 1332ThunderLAN driver interrupt vectors and table
1da177e4 1333
c659c38b
SA		 1334please see chap. 4, "Interrupt Handling" of the "ThunderLAN
1335Programmer's Guide" for more informations on handling interrupts
1336generated by TLAN based adapters.
1da177e4
LT		 1337
1338******************************************************************************
1339*****************************************************************************/
1340
1341
1da177e4
LT		 1342
1343
c659c38b
SA		 1344/***************************************************************
1345 * tlan_handle_tx_eof
1346 *
1347 * Returns:
1348 * 1
1349 * Parms:
1350 * dev Device assigned the IRQ that was
1351 * raised.
1352 * host_int The contents of the HOST_INT
1353 * port.
1354 *
1355 * This function handles Tx EOF interrupts which are raised
1356 * by the adapter when it has completed sending the
1357 * contents of a buffer. If detemines which list/buffer
1358 * was completed and resets it. If the buffer was the last
1359 * in the channel (EOC), then the function checks to see if
1360 * another buffer is ready to send, and if so, sends a Tx
1361 * Go command. Finally, the driver activates/continues the
1362 * activity LED.
1363 *
1364 **************************************************************/
1365
1366static u32 tlan_handle_tx_eof(struct net_device *dev, u16 host_int)
1da177e4 1367{
c659c38b 1368 struct tlan_priv *priv = netdev_priv(dev);
1da177e4 1369 int eoc = 0;
c659c38b 1370 struct tlan_list *head_list;
1da177e4
LT		 1371 dma_addr_t head_list_phys;
1372 u32 ack = 0;
c659c38b 1373 u16 tmp_c_stat;
6aa20a22 1374
c659c38b
SA		 1375 TLAN_DBG(TLAN_DEBUG_TX,
1376 "TRANSMIT: Handling TX EOF (Head=%d Tail=%d)\n",
1377 priv->tx_head, priv->tx_tail);
1378 head_list = priv->tx_list + priv->tx_head;
1da177e4 1379
c659c38b
SA		 1380 while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1381 && (ack < 255)) {
1382 struct sk_buff *skb = tlan_get_skb(head_list);
5eeabf51 1383
1da177e4 1384 ack++;
c659c38b 1385 pci_unmap_single(priv->pci_dev, head_list->buffer[0].address,
5eeabf51
SA		 1386 max(skb->len,
1387 (unsigned int)TLAN_MIN_FRAME_SIZE),
1388 PCI_DMA_TODEVICE);
1389 dev_kfree_skb_any(skb);
1390 head_list->buffer[8].address = 0;
1391 head_list->buffer[9].address = 0;
6aa20a22 1392
c659c38b 1393 if (tmp_c_stat & TLAN_CSTAT_EOC)
1da177e4 1394 eoc = 1;
6aa20a22 1395
c659c38b 1396 dev->stats.tx_bytes += head_list->frame_size;
1da177e4 1397
c659c38b 1398 head_list->c_stat = TLAN_CSTAT_UNUSED;
6aa20a22 1399 netif_start_queue(dev);
c659c38b
SA		 1400 CIRC_INC(priv->tx_head, TLAN_NUM_TX_LISTS);
1401 head_list = priv->tx_list + priv->tx_head;
1da177e4
LT		 1402 }
1403
1404 if (!ack)
50624aab
JP		 1405 netdev_info(dev,
1406 "Received interrupt for uncompleted TX frame\n");
c659c38b
SA		 1407
1408 if (eoc) {
1409 TLAN_DBG(TLAN_DEBUG_TX,
1410 "TRANSMIT: handling TX EOC (Head=%d Tail=%d)\n",
1411 priv->tx_head, priv->tx_tail);
1412 head_list = priv->tx_list + priv->tx_head;
1413 head_list_phys = priv->tx_list_dma
1414 + sizeof(struct tlan_list)*priv->tx_head;
f45437ef
SA		 1415 if ((head_list->c_stat & TLAN_CSTAT_READY)
1416 == TLAN_CSTAT_READY) {
c659c38b 1417 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1da177e4
LT		 1418 ack |= TLAN_HC_GO;
1419 } else {
c659c38b 1420 priv->tx_in_progress = 0;
1da177e4
LT		 1421 }
1422 }
6aa20a22 1423
c659c38b
SA		 1424 if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1425 tlan_dio_write8(dev->base_addr,
1426 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1427 if (priv->timer.function == NULL) {
841b86f3 1428 priv->timer.function = tlan_timer;
c659c38b
SA		 1429 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1430 priv->timer_set_at = jiffies;
1431 priv->timer_type = TLAN_TIMER_ACTIVITY;
1432 add_timer(&priv->timer);
1433 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1434 priv->timer_set_at = jiffies;
1da177e4
LT		 1435 }
1436 }
1437
1438 return ack;
1439
c659c38b 1440}
1da177e4
LT		 1441
1442
1443
1444
c659c38b
SA		 1445/***************************************************************
1446 * TLan_HandleStatOverflow
1447 *
1448 * Returns:
1449 * 1
1450 * Parms:
1451 * dev Device assigned the IRQ that was
1452 * raised.
1453 * host_int The contents of the HOST_INT
1454 * port.
1455 *
1456 * This function handles the Statistics Overflow interrupt
1457 * which means that one or more of the TLAN statistics
1458 * registers has reached 1/2 capacity and needs to be read.
1459 *
1460 **************************************************************/
1da177e4 1461
c659c38b 1462static u32 tlan_handle_stat_overflow(struct net_device *dev, u16 host_int)
1da177e4 1463{
c659c38b 1464 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1da177e4
LT		 1465
1466 return 1;
1467
c659c38b
SA		 1468}
1469
1470
1471
1472
1473/***************************************************************
1474 * TLan_HandleRxEOF
1475 *
1476 * Returns:
1477 * 1
1478 * Parms:
1479 * dev Device assigned the IRQ that was
1480 * raised.
1481 * host_int The contents of the HOST_INT
1482 * port.
1483 *
1484 * This function handles the Rx EOF interrupt which
1485 * indicates a frame has been received by the adapter from
1486 * the net and the frame has been transferred to memory.
1487 * The function determines the bounce buffer the frame has
1488 * been loaded into, creates a new sk_buff big enough to
1489 * hold the frame, and sends it to protocol stack. It
1490 * then resets the used buffer and appends it to the end
1491 * of the list. If the frame was the last in the Rx
1492 * channel (EOC), the function restarts the receive channel
1493 * by sending an Rx Go command to the adapter. Then it
1494 * activates/continues the activity LED.
1495 *
1496 **************************************************************/
1497
1498static u32 tlan_handle_rx_eof(struct net_device *dev, u16 host_int)
1da177e4 1499{
c659c38b 1500 struct tlan_priv *priv = netdev_priv(dev);
1da177e4
LT		 1501 u32 ack = 0;
1502 int eoc = 0;
c659c38b 1503 struct tlan_list *head_list;
1da177e4 1504 struct sk_buff *skb;
c659c38b
SA		 1505 struct tlan_list *tail_list;
1506 u16 tmp_c_stat;
1da177e4
LT		 1507 dma_addr_t head_list_phys;
1508
c659c38b
SA		 1509 TLAN_DBG(TLAN_DEBUG_RX, "RECEIVE: handling RX EOF (Head=%d Tail=%d)\n",
1510 priv->rx_head, priv->rx_tail);
1511 head_list = priv->rx_list + priv->rx_head;
1512 head_list_phys =
1513 priv->rx_list_dma + sizeof(struct tlan_list)*priv->rx_head;
6aa20a22 1514
c659c38b
SA		 1515 while (((tmp_c_stat = head_list->c_stat) & TLAN_CSTAT_FRM_CMP)
1516 && (ack < 255)) {
1517 dma_addr_t frame_dma = head_list->buffer[0].address;
1518 u32 frame_size = head_list->frame_size;
5eeabf51
SA		 1519 struct sk_buff *new_skb;
1520
1da177e4 1521 ack++;
c659c38b 1522 if (tmp_c_stat & TLAN_CSTAT_EOC)
1da177e4 1523 eoc = 1;
6aa20a22 1524
89d71a66
ED		 1525 new_skb = netdev_alloc_skb_ip_align(dev,
1526 TLAN_MAX_FRAME_SIZE + 5);
c659c38b 1527 if (!new_skb)
5eeabf51 1528 goto drop_and_reuse;
6aa20a22 1529
c659c38b
SA		 1530 skb = tlan_get_skb(head_list);
1531 pci_unmap_single(priv->pci_dev, frame_dma,
5eeabf51 1532 TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
c659c38b 1533 skb_put(skb, frame_size);
1da177e4 1534
c659c38b 1535 dev->stats.rx_bytes += frame_size;
1da177e4 1536
c659c38b
SA		 1537 skb->protocol = eth_type_trans(skb, dev);
1538 netif_rx(skb);
6aa20a22 1539
c659c38b
SA		 1540 head_list->buffer[0].address =
1541 pci_map_single(priv->pci_dev, new_skb->data,
1542 TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
93e16847 1543
c659c38b 1544 tlan_store_skb(head_list, new_skb);
dfc2c0a6 1545drop_and_reuse:
1da177e4 1546 head_list->forward = 0;
c659c38b
SA		 1547 head_list->c_stat = 0;
1548 tail_list = priv->rx_list + priv->rx_tail;
1da177e4
LT		 1549 tail_list->forward = head_list_phys;
1550
c659c38b
SA		 1551 CIRC_INC(priv->rx_head, TLAN_NUM_RX_LISTS);
1552 CIRC_INC(priv->rx_tail, TLAN_NUM_RX_LISTS);
1553 head_list = priv->rx_list + priv->rx_head;
1554 head_list_phys = priv->rx_list_dma
1555 + sizeof(struct tlan_list)*priv->rx_head;
1da177e4
LT		 1556 }
1557
1558 if (!ack)
50624aab
JP		 1559 netdev_info(dev,
1560 "Received interrupt for uncompleted RX frame\n");
c659c38b
SA		 1561
1562
1563 if (eoc) {
1564 TLAN_DBG(TLAN_DEBUG_RX,
1565 "RECEIVE: handling RX EOC (Head=%d Tail=%d)\n",
1566 priv->rx_head, priv->rx_tail);
1567 head_list = priv->rx_list + priv->rx_head;
1568 head_list_phys = priv->rx_list_dma
1569 + sizeof(struct tlan_list)*priv->rx_head;
1570 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1da177e4 1571 ack |= TLAN_HC_GO | TLAN_HC_RT;
c659c38b 1572 priv->rx_eoc_count++;
1da177e4
LT		 1573 }
1574
c659c38b
SA		 1575 if (priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED) {
1576 tlan_dio_write8(dev->base_addr,
1577 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT);
1578 if (priv->timer.function == NULL) {
841b86f3 1579 priv->timer.function = tlan_timer;
1da177e4 1580 priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
c659c38b
SA		 1581 priv->timer_set_at = jiffies;
1582 priv->timer_type = TLAN_TIMER_ACTIVITY;
1da177e4 1583 add_timer(&priv->timer);
c659c38b
SA		 1584 } else if (priv->timer_type == TLAN_TIMER_ACTIVITY) {
1585 priv->timer_set_at = jiffies;
1da177e4
LT		 1586 }
1587 }
1588
1da177e4
LT		 1589 return ack;
1590
c659c38b 1591}
1da177e4
LT		 1592
1593
1594
1595
c659c38b
SA		 1596/***************************************************************
1597 * tlan_handle_dummy
1598 *
1599 * Returns:
1600 * 1
1601 * Parms:
1602 * dev Device assigned the IRQ that was
1603 * raised.
1604 * host_int The contents of the HOST_INT
1605 * port.
1606 *
1607 * This function handles the Dummy interrupt, which is
1608 * raised whenever a test interrupt is generated by setting
1609 * the Req_Int bit of HOST_CMD to 1.
1610 *
1611 **************************************************************/
1da177e4 1612
c659c38b 1613static u32 tlan_handle_dummy(struct net_device *dev, u16 host_int)
1da177e4 1614{
50624aab 1615 netdev_info(dev, "Test interrupt\n");
1da177e4
LT		 1616 return 1;
1617
c659c38b 1618}
1da177e4
LT		 1619
1620
1621
1622
c659c38b
SA		 1623/***************************************************************
1624 * tlan_handle_tx_eoc
1625 *
1626 * Returns:
1627 * 1
1628 * Parms:
1629 * dev Device assigned the IRQ that was
1630 * raised.
1631 * host_int The contents of the HOST_INT
1632 * port.
1633 *
1634 * This driver is structured to determine EOC occurrences by
1635 * reading the CSTAT member of the list structure. Tx EOC
1636 * interrupts are disabled via the DIO INTDIS register.
1637 * However, TLAN chips before revision 3.0 didn't have this
1638 * functionality, so process EOC events if this is the
1639 * case.
1640 *
1641 **************************************************************/
1da177e4 1642
c659c38b 1643static u32 tlan_handle_tx_eoc(struct net_device *dev, u16 host_int)
1da177e4 1644{
c659c38b
SA		 1645 struct tlan_priv *priv = netdev_priv(dev);
1646 struct tlan_list *head_list;
1da177e4
LT		 1647 dma_addr_t head_list_phys;
1648 u32 ack = 1;
6aa20a22 1649
c659c38b
SA		 1650 if (priv->tlan_rev < 0x30) {
1651 TLAN_DBG(TLAN_DEBUG_TX,
1652 "TRANSMIT: handling TX EOC (Head=%d Tail=%d) -- IRQ\n",
1653 priv->tx_head, priv->tx_tail);
1654 head_list = priv->tx_list + priv->tx_head;
1655 head_list_phys = priv->tx_list_dma
1656 + sizeof(struct tlan_list)*priv->tx_head;
f45437ef
SA		 1657 if ((head_list->c_stat & TLAN_CSTAT_READY)
1658 == TLAN_CSTAT_READY) {
1da177e4 1659 netif_stop_queue(dev);
c659c38b 1660 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1da177e4
LT		 1661 ack |= TLAN_HC_GO;
1662 } else {
c659c38b 1663 priv->tx_in_progress = 0;
1da177e4
LT		 1664 }
1665 }
1666
1667 return ack;
1668
c659c38b 1669}
1da177e4
LT		 1670
1671
1672
1673
c659c38b
SA		 1674/***************************************************************
1675 * tlan_handle_status_check
1676 *
1677 * Returns:
1678 * 0 if Adapter check, 1 if Network Status check.
1679 * Parms:
1680 * dev Device assigned the IRQ that was
1681 * raised.
1682 * host_int The contents of the HOST_INT
1683 * port.
1684 *
1685 * This function handles Adapter Check/Network Status
1686 * interrupts generated by the adapter. It checks the
1687 * vector in the HOST_INT register to determine if it is
1688 * an Adapter Check interrupt. If so, it resets the
1689 * adapter. Otherwise it clears the status registers
1690 * and services the PHY.
1691 *
1692 **************************************************************/
1da177e4 1693
c659c38b 1694static u32 tlan_handle_status_check(struct net_device *dev, u16 host_int)
6aa20a22 1695{
c659c38b 1696 struct tlan_priv *priv = netdev_priv(dev);
1da177e4
LT		 1697 u32 ack;
1698 u32 error;
1699 u8 net_sts;
1700 u32 phy;
1701 u16 tlphy_ctl;
1702 u16 tlphy_sts;
6aa20a22 1703
1da177e4 1704 ack = 1;
c659c38b
SA		 1705 if (host_int & TLAN_HI_IV_MASK) {
1706 netif_stop_queue(dev);
1707 error = inl(dev->base_addr + TLAN_CH_PARM);
50624aab 1708 netdev_info(dev, "Adaptor Error = 0x%x\n", error);
c659c38b
SA		 1709 tlan_read_and_clear_stats(dev, TLAN_RECORD);
1710 outl(TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD);
1da177e4
LT		 1711
1712 schedule_work(&priv->tlan_tqueue);
1713
1714 netif_wake_queue(dev);
1715 ack = 0;
1716 } else {
c659c38b
SA		 1717 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Status Check\n", dev->name);
1718 phy = priv->phy[priv->phy_num];
1719
1720 net_sts = tlan_dio_read8(dev->base_addr, TLAN_NET_STS);
1721 if (net_sts) {
1722 tlan_dio_write8(dev->base_addr, TLAN_NET_STS, net_sts);
1723 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Net_Sts = %x\n",
1724 dev->name, (unsigned) net_sts);
1da177e4 1725 }
c659c38b
SA		 1726 if ((net_sts & TLAN_NET_STS_MIRQ) && (priv->phy_num == 0)) {
1727 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_STS, &tlphy_sts);
1728 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
1729 if (!(tlphy_sts & TLAN_TS_POLOK) &&
1730 !(tlphy_ctl & TLAN_TC_SWAPOL)) {
1731 tlphy_ctl |= TLAN_TC_SWAPOL;
1732 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1733 tlphy_ctl);
1734 } else if ((tlphy_sts & TLAN_TS_POLOK) &&
1735 (tlphy_ctl & TLAN_TC_SWAPOL)) {
1736 tlphy_ctl &= ~TLAN_TC_SWAPOL;
1737 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL,
1738 tlphy_ctl);
1da177e4 1739 }
c659c38b
SA		 1740
1741 if (debug)
1742 tlan_phy_print(dev);
1da177e4
LT		 1743 }
1744 }
1745
1746 return ack;
1747
c659c38b 1748}
1da177e4
LT		 1749
1750
1751
1752
c659c38b
SA		 1753/***************************************************************
1754 * tlan_handle_rx_eoc
1755 *
1756 * Returns:
1757 * 1
1758 * Parms:
1759 * dev Device assigned the IRQ that was
1760 * raised.
1761 * host_int The contents of the HOST_INT
1762 * port.
1763 *
1764 * This driver is structured to determine EOC occurrences by
1765 * reading the CSTAT member of the list structure. Rx EOC
1766 * interrupts are disabled via the DIO INTDIS register.
1767 * However, TLAN chips before revision 3.0 didn't have this
1768 * CSTAT member or a INTDIS register, so if this chip is
1769 * pre-3.0, process EOC interrupts normally.
1770 *
1771 **************************************************************/
1da177e4 1772
c659c38b 1773static u32 tlan_handle_rx_eoc(struct net_device *dev, u16 host_int)
1da177e4 1774{
c659c38b 1775 struct tlan_priv *priv = netdev_priv(dev);
1da177e4
LT		 1776 dma_addr_t head_list_phys;
1777 u32 ack = 1;
1778
c659c38b
SA		 1779 if (priv->tlan_rev < 0x30) {
1780 TLAN_DBG(TLAN_DEBUG_RX,
1781 "RECEIVE: Handling RX EOC (head=%d tail=%d) -- IRQ\n",
1782 priv->rx_head, priv->rx_tail);
1783 head_list_phys = priv->rx_list_dma
1784 + sizeof(struct tlan_list)*priv->rx_head;
1785 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM);
1da177e4 1786 ack |= TLAN_HC_GO | TLAN_HC_RT;
c659c38b 1787 priv->rx_eoc_count++;
1da177e4
LT		 1788 }
1789
1790 return ack;
1791
c659c38b 1792}
1da177e4
LT		 1793
1794
1795
1796
1797/*****************************************************************************
1798******************************************************************************
1799
c659c38b 1800ThunderLAN driver timer function
1da177e4
LT		 1801
1802******************************************************************************
1803*****************************************************************************/
1804
1805
c659c38b
SA		 1806/***************************************************************
1807 * tlan_timer
1808 *
1809 * Returns:
1810 * Nothing
1811 * Parms:
1812 * data A value given to add timer when
1813 * add_timer was called.
1814 *
1815 * This function handles timed functionality for the
1816 * TLAN driver. The two current timer uses are for
1817 * delaying for autonegotionation and driving the ACT LED.
1818 * - Autonegotiation requires being allowed about
1819 * 2 1/2 seconds before attempting to transmit a
1820 * packet. It would be a very bad thing to hang
1821 * the kernel this long, so the driver doesn't
1822 * allow transmission 'til after this time, for
1823 * certain PHYs. It would be much nicer if all
1824 * PHYs were interrupt-capable like the internal
1825 * PHY.
1826 * - The ACT LED, which shows adapter activity, is
1827 * driven by the driver, and so must be left on
1828 * for a short period to power up the LED so it
1829 * can be seen. This delay can be changed by
1830 * changing the TLAN_TIMER_ACT_DELAY in tlan.h,
1831 * if desired. 100 ms produces a slightly
1832 * sluggish response.
1833 *
1834 **************************************************************/
1835
0010e3f8 1836static void tlan_timer(struct timer_list *t)
1da177e4 1837{
0010e3f8
KC		 1838 struct tlan_priv *priv = from_timer(priv, t, timer);
1839 struct net_device *dev = priv->dev;
1da177e4
LT		 1840 u32 elapsed;
1841 unsigned long flags = 0;
1842
1843 priv->timer.function = NULL;
1844
c659c38b 1845 switch (priv->timer_type) {
c659c38b
SA		 1846 case TLAN_TIMER_PHY_PDOWN:
1847 tlan_phy_power_down(dev);
1848 break;
1849 case TLAN_TIMER_PHY_PUP:
1850 tlan_phy_power_up(dev);
1851 break;
1852 case TLAN_TIMER_PHY_RESET:
1853 tlan_phy_reset(dev);
1854 break;
1855 case TLAN_TIMER_PHY_START_LINK:
1856 tlan_phy_start_link(dev);
1857 break;
1858 case TLAN_TIMER_PHY_FINISH_AN:
1859 tlan_phy_finish_auto_neg(dev);
1860 break;
1861 case TLAN_TIMER_FINISH_RESET:
1862 tlan_finish_reset(dev);
1863 break;
1864 case TLAN_TIMER_ACTIVITY:
1865 spin_lock_irqsave(&priv->lock, flags);
1866 if (priv->timer.function == NULL) {
1867 elapsed = jiffies - priv->timer_set_at;
1868 if (elapsed >= TLAN_TIMER_ACT_DELAY) {
1869 tlan_dio_write8(dev->base_addr,
1870 TLAN_LED_REG, TLAN_LED_LINK);
1871 } else {
c659c38b
SA		 1872 priv->timer.expires = priv->timer_set_at
1873 + TLAN_TIMER_ACT_DELAY;
1874 spin_unlock_irqrestore(&priv->lock, flags);
1875 add_timer(&priv->timer);
1876 break;
1da177e4 1877 }
c659c38b
SA		 1878 }
1879 spin_unlock_irqrestore(&priv->lock, flags);
1880 break;
1881 default:
1882 break;
1da177e4
LT		 1883 }
1884
c659c38b 1885}
1da177e4
LT		 1886
1887
1da177e4
LT		 1888/*****************************************************************************
1889******************************************************************************
1890
c659c38b 1891ThunderLAN driver adapter related routines
1da177e4
LT		 1892
1893******************************************************************************
1894*****************************************************************************/
1895
1896
c659c38b
SA		 1897/***************************************************************
1898 * tlan_reset_lists
1899 *
1900 * Returns:
1901 * Nothing
1902 * Parms:
1903 * dev The device structure with the list
1904 * stuctures to be reset.
1905 *
1906 * This routine sets the variables associated with managing
1907 * the TLAN lists to their initial values.
1908 *
1909 **************************************************************/
1910
1911static void tlan_reset_lists(struct net_device *dev)
1da177e4 1912{
c659c38b 1913 struct tlan_priv *priv = netdev_priv(dev);
1da177e4 1914 int i;
c659c38b 1915 struct tlan_list *list;
1da177e4
LT		 1916 dma_addr_t list_phys;
1917 struct sk_buff *skb;
1da177e4 1918
c659c38b
SA		 1919 priv->tx_head = 0;
1920 priv->tx_tail = 0;
1921 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1922 list = priv->tx_list + i;
1923 list->c_stat = TLAN_CSTAT_UNUSED;
5eeabf51 1924 list->buffer[0].address = 0;
1da177e4
LT		 1925 list->buffer[2].count = 0;
1926 list->buffer[2].address = 0;
1927 list->buffer[8].address = 0;
1928 list->buffer[9].address = 0;
1929 }
1930
c659c38b
SA		 1931 priv->rx_head = 0;
1932 priv->rx_tail = TLAN_NUM_RX_LISTS - 1;
1933 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1934 list = priv->rx_list + i;
1935 list_phys = priv->rx_list_dma + sizeof(struct tlan_list)*i;
1936 list->c_stat = TLAN_CSTAT_READY;
1937 list->frame_size = TLAN_MAX_FRAME_SIZE;
1da177e4 1938 list->buffer[0].count = TLAN_MAX_FRAME_SIZE | TLAN_LAST_BUFFER;
89d71a66 1939 skb = netdev_alloc_skb_ip_align(dev, TLAN_MAX_FRAME_SIZE + 5);
720a43ef 1940 if (!skb)
5eeabf51 1941 break;
5eeabf51 1942
c659c38b 1943 list->buffer[0].address = pci_map_single(priv->pci_dev,
5eeabf51
SA		 1944 skb->data,
1945 TLAN_MAX_FRAME_SIZE,
1946 PCI_DMA_FROMDEVICE);
c659c38b 1947 tlan_store_skb(list, skb);
1da177e4
LT		 1948 list->buffer[1].count = 0;
1949 list->buffer[1].address = 0;
c659c38b 1950 list->forward = list_phys + sizeof(struct tlan_list);
9ded65a1
SH		 1951 }
1952
1953 /* in case ran out of memory early, clear bits */
1954 while (i < TLAN_NUM_RX_LISTS) {
c659c38b 1955 tlan_store_skb(priv->rx_list + i, NULL);
9ded65a1 1956 ++i;
1da177e4 1957 }
9ded65a1 1958 list->forward = 0;
1da177e4 1959
c659c38b 1960}
1da177e4
LT		 1961
1962
c659c38b 1963static void tlan_free_lists(struct net_device *dev)
1da177e4 1964{
c659c38b 1965 struct tlan_priv *priv = netdev_priv(dev);
1da177e4 1966 int i;
c659c38b 1967 struct tlan_list *list;
1da177e4
LT		 1968 struct sk_buff *skb;
1969
c659c38b
SA		 1970 for (i = 0; i < TLAN_NUM_TX_LISTS; i++) {
1971 list = priv->tx_list + i;
1972 skb = tlan_get_skb(list);
1973 if (skb) {
5eeabf51 1974 pci_unmap_single(
c659c38b 1975 priv->pci_dev,
5eeabf51
SA		 1976 list->buffer[0].address,
1977 max(skb->len,
1978 (unsigned int)TLAN_MIN_FRAME_SIZE),
1979 PCI_DMA_TODEVICE);
c659c38b 1980 dev_kfree_skb_any(skb);
5eeabf51
SA		 1981 list->buffer[8].address = 0;
1982 list->buffer[9].address = 0;
1da177e4 1983 }
5eeabf51 1984 }
1da177e4 1985
c659c38b
SA		 1986 for (i = 0; i < TLAN_NUM_RX_LISTS; i++) {
1987 list = priv->rx_list + i;
1988 skb = tlan_get_skb(list);
1989 if (skb) {
1990 pci_unmap_single(priv->pci_dev,
5eeabf51
SA		 1991 list->buffer[0].address,
1992 TLAN_MAX_FRAME_SIZE,
1993 PCI_DMA_FROMDEVICE);
c659c38b 1994 dev_kfree_skb_any(skb);
5eeabf51
SA		 1995 list->buffer[8].address = 0;
1996 list->buffer[9].address = 0;
1da177e4
LT		 1997 }
1998 }
c659c38b 1999}
1da177e4
LT		 2000
2001
2002
2003
c659c38b
SA		 2004/***************************************************************
2005 * tlan_print_dio
2006 *
2007 * Returns:
2008 * Nothing
2009 * Parms:
2010 * io_base Base IO port of the device of
2011 * which to print DIO registers.
2012 *
2013 * This function prints out all the internal (DIO)
2014 * registers of a TLAN chip.
2015 *
2016 **************************************************************/
1da177e4 2017
c659c38b 2018static void tlan_print_dio(u16 io_base)
1da177e4
LT		 2019{
2020 u32 data0, data1;
2021 int i;
2022
50624aab
JP		 2023 pr_info("Contents of internal registers for io base 0x%04hx\n",
2024 io_base);
2025 pr_info("Off. +0 +4\n");
c659c38b
SA		 2026 for (i = 0; i < 0x4C; i += 8) {
2027 data0 = tlan_dio_read32(io_base, i);
2028 data1 = tlan_dio_read32(io_base, i + 0x4);
50624aab 2029 pr_info("0x%02x 0x%08x 0x%08x\n", i, data0, data1);
1da177e4
LT		 2030 }
2031
c659c38b 2032}
1da177e4
LT		 2033
2034
2035
2036
c659c38b
SA		 2037/***************************************************************
2038 * TLan_PrintList
2039 *
2040 * Returns:
2041 * Nothing
2042 * Parms:
2043 * list A pointer to the struct tlan_list structure to
2044 * be printed.
2045 * type A string to designate type of list,
2046 * "Rx" or "Tx".
2047 * num The index of the list.
2048 *
2049 * This function prints out the contents of the list
2050 * pointed to by the list parameter.
2051 *
2052 **************************************************************/
1da177e4 2053
c659c38b 2054static void tlan_print_list(struct tlan_list *list, char *type, int num)
1da177e4
LT		 2055{
2056 int i;
2057
50624aab
JP		 2058 pr_info("%s List %d at %p\n", type, num, list);
2059 pr_info(" Forward = 0x%08x\n", list->forward);
2060 pr_info(" CSTAT = 0x%04hx\n", list->c_stat);
2061 pr_info(" Frame Size = 0x%04hx\n", list->frame_size);
c659c38b
SA		 2062 /* for (i = 0; i < 10; i++) { */
2063 for (i = 0; i < 2; i++) {
50624aab
JP		 2064 pr_info(" Buffer[%d].count, addr = 0x%08x, 0x%08x\n",
2065 i, list->buffer[i].count, list->buffer[i].address);
1da177e4
LT		 2066 }
2067
c659c38b 2068}
1da177e4
LT		 2069
2070
2071
2072
c659c38b
SA		 2073/***************************************************************
2074 * tlan_read_and_clear_stats
2075 *
2076 * Returns:
2077 * Nothing
2078 * Parms:
2079 * dev Pointer to device structure of adapter
2080 * to which to read stats.
2081 * record Flag indicating whether to add
2082 *
2083 * This functions reads all the internal status registers
2084 * of the TLAN chip, which clears them as a side effect.
2085 * It then either adds the values to the device's status
2086 * struct, or discards them, depending on whether record
2087 * is TLAN_RECORD (!=0) or TLAN_IGNORE (==0).
2088 *
2089 **************************************************************/
1da177e4 2090
c659c38b 2091static void tlan_read_and_clear_stats(struct net_device *dev, int record)
1da177e4 2092{
1da177e4
LT		 2093 u32 tx_good, tx_under;
2094 u32 rx_good, rx_over;
2095 u32 def_tx, crc, code;
2096 u32 multi_col, single_col;
2097 u32 excess_col, late_col, loss;
2098
c659c38b
SA		 2099 outw(TLAN_GOOD_TX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2100 tx_good = inb(dev->base_addr + TLAN_DIO_DATA);
2101 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2102 tx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2103 tx_under = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2104
2105 outw(TLAN_GOOD_RX_FRMS, dev->base_addr + TLAN_DIO_ADR);
2106 rx_good = inb(dev->base_addr + TLAN_DIO_DATA);
2107 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2108 rx_good += inb(dev->base_addr + TLAN_DIO_DATA + 2) << 16;
2109 rx_over = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2110
2111 outw(TLAN_DEFERRED_TX, dev->base_addr + TLAN_DIO_ADR);
2112 def_tx = inb(dev->base_addr + TLAN_DIO_DATA);
2113 def_tx += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2114 crc = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2115 code = inb(dev->base_addr + TLAN_DIO_DATA + 3);
2116
2117 outw(TLAN_MULTICOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2118 multi_col = inb(dev->base_addr + TLAN_DIO_DATA);
2119 multi_col += inb(dev->base_addr + TLAN_DIO_DATA + 1) << 8;
2120 single_col = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2121 single_col += inb(dev->base_addr + TLAN_DIO_DATA + 3) << 8;
2122
2123 outw(TLAN_EXCESSCOL_FRMS, dev->base_addr + TLAN_DIO_ADR);
2124 excess_col = inb(dev->base_addr + TLAN_DIO_DATA);
2125 late_col = inb(dev->base_addr + TLAN_DIO_DATA + 1);
2126 loss = inb(dev->base_addr + TLAN_DIO_DATA + 2);
2127
2128 if (record) {
f8f31544
SH		 2129 dev->stats.rx_packets += rx_good;
2130 dev->stats.rx_errors += rx_over + crc + code;
2131 dev->stats.tx_packets += tx_good;
2132 dev->stats.tx_errors += tx_under + loss;
c659c38b
SA		 2133 dev->stats.collisions += multi_col
2134 + single_col + excess_col + late_col;
f8f31544
SH		 2135
2136 dev->stats.rx_over_errors += rx_over;
2137 dev->stats.rx_crc_errors += crc;
2138 dev->stats.rx_frame_errors += code;
2139
2140 dev->stats.tx_aborted_errors += tx_under;
2141 dev->stats.tx_carrier_errors += loss;
1da177e4 2142 }
6aa20a22 2143
c659c38b 2144}
1da177e4
LT		 2145
2146
2147
2148
c659c38b
SA		 2149/***************************************************************
2150 * TLan_Reset
2151 *
2152 * Returns:
2153 * 0
2154 * Parms:
2155 * dev Pointer to device structure of adapter
2156 * to be reset.
2157 *
2158 * This function resets the adapter and it's physical
2159 * device. See Chap. 3, pp. 9-10 of the "ThunderLAN
2160 * Programmer's Guide" for details. The routine tries to
2161 * implement what is detailed there, though adjustments
2162 * have been made.
2163 *
2164 **************************************************************/
1da177e4 2165
98e0f521 2166static void
c659c38b 2167tlan_reset_adapter(struct net_device *dev)
1da177e4 2168{
c659c38b 2169 struct tlan_priv *priv = netdev_priv(dev);
1da177e4
LT		 2170 int i;
2171 u32 addr;
2172 u32 data;
2173 u8 data8;
2174
c659c38b
SA		 2175 priv->tlan_full_duplex = false;
2176 priv->phy_online = 0;
1da177e4
LT		 2177 netif_carrier_off(dev);
2178
2179/* 1. Assert reset bit. */
2180
2181 data = inl(dev->base_addr + TLAN_HOST_CMD);
2182 data |= TLAN_HC_AD_RST;
2183 outl(data, dev->base_addr + TLAN_HOST_CMD);
6aa20a22 2184
1da177e4
LT		 2185 udelay(1000);
2186
c659c38b 2187/* 2. Turn off interrupts. (Probably isn't necessary) */
1da177e4
LT		 2188
2189 data = inl(dev->base_addr + TLAN_HOST_CMD);
2190 data |= TLAN_HC_INT_OFF;
2191 outl(data, dev->base_addr + TLAN_HOST_CMD);
2192
2193/* 3. Clear AREGs and HASHs. */
2194
c659c38b
SA		 2195 for (i = TLAN_AREG_0; i <= TLAN_HASH_2; i += 4)
2196 tlan_dio_write32(dev->base_addr, (u16) i, 0);
1da177e4
LT		 2197
2198/* 4. Setup NetConfig register. */
2199
2200 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN;
c659c38b 2201 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
1da177e4
LT		 2202
2203/* 5. Load Ld_Tmr and Ld_Thr in HOST_CMD. */
2204
c659c38b
SA		 2205 outl(TLAN_HC_LD_TMR | 0x3f, dev->base_addr + TLAN_HOST_CMD);
2206 outl(TLAN_HC_LD_THR | 0x9, dev->base_addr + TLAN_HOST_CMD);
1da177e4
LT		 2207
2208/* 6. Unreset the MII by setting NMRST (in NetSio) to 1. */
2209
c659c38b 2210 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
1da177e4 2211 addr = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
c659c38b 2212 tlan_set_bit(TLAN_NET_SIO_NMRST, addr);
1da177e4
LT		 2213
2214/* 7. Setup the remaining registers. */
2215
c659c38b 2216 if (priv->tlan_rev >= 0x30) {
1da177e4 2217 data8 = TLAN_ID_TX_EOC | TLAN_ID_RX_EOC;
c659c38b 2218 tlan_dio_write8(dev->base_addr, TLAN_INT_DIS, data8);
1da177e4 2219 }
c659c38b 2220 tlan_phy_detect(dev);
1da177e4 2221 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN;
6aa20a22 2222
c659c38b 2223 if (priv->adapter->flags & TLAN_ADAPTER_BIT_RATE_PHY) {
1da177e4 2224 data |= TLAN_NET_CFG_BIT;
c659c38b
SA		 2225 if (priv->aui == 1) {
2226 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x0a);
2227 } else if (priv->duplex == TLAN_DUPLEX_FULL) {
2228 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x00);
2229 priv->tlan_full_duplex = true;
1da177e4 2230 } else {
c659c38b 2231 tlan_dio_write8(dev->base_addr, TLAN_ACOMMIT, 0x08);
1da177e4
LT		 2232 }
2233 }
2234
7a72eddc
OZ		 2235 /* don't power down internal PHY if we're going to use it */
2236 if (priv->phy_num == 0 ||
2237 (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10))
1da177e4 2238 data |= TLAN_NET_CFG_PHY_EN;
c659c38b 2239 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, (u16) data);
1da177e4 2240
c659c38b
SA		 2241 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY)
2242 tlan_finish_reset(dev);
2243 else
2244 tlan_phy_power_down(dev);
1da177e4 2245
c659c38b 2246}
1da177e4
LT		 2247
2248
2249
2250
98e0f521 2251static void
c659c38b 2252tlan_finish_reset(struct net_device *dev)
1da177e4 2253{
c659c38b 2254 struct tlan_priv *priv = netdev_priv(dev);
1da177e4
LT		 2255 u8 data;
2256 u32 phy;
2257 u8 sio;
2258 u16 status;
2259 u16 partner;
2260 u16 tlphy_ctl;
c659c38b 2261 u16 tlphy_par;
1da177e4 2262 u16 tlphy_id1, tlphy_id2;
c659c38b 2263 int i;
1da177e4 2264
c659c38b 2265 phy = priv->phy[priv->phy_num];
1da177e4
LT		 2266
2267 data = TLAN_NET_CMD_NRESET | TLAN_NET_CMD_NWRAP;
c659c38b 2268 if (priv->tlan_full_duplex)
1da177e4 2269 data |= TLAN_NET_CMD_DUPLEX;
c659c38b 2270 tlan_dio_write8(dev->base_addr, TLAN_NET_CMD, data);
6aa20a22 2271 data = TLAN_NET_MASK_MASK4 | TLAN_NET_MASK_MASK5;
c659c38b 2272 if (priv->phy_num == 0)
6aa20a22 2273 data |= TLAN_NET_MASK_MASK7;
c659c38b
SA		 2274 tlan_dio_write8(dev->base_addr, TLAN_NET_MASK, data);
2275 tlan_dio_write16(dev->base_addr, TLAN_MAX_RX, ((1536)+7)&~7);
2276 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &tlphy_id1);
2277 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &tlphy_id2);
6aa20a22 2278
c659c38b
SA		 2279 if ((priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) ||
2280 (priv->aui)) {
1da177e4 2281 status = MII_GS_LINK;
50624aab 2282 netdev_info(dev, "Link forced\n");
1da177e4 2283 } else {
c659c38b
SA		 2284 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2285 udelay(1000);
2286 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
c0a87c22
OZ		 2287 if (status & MII_GS_LINK) {
2288 /* We only support link info on Nat.Sem. PHY's */
2289 if ((tlphy_id1 == NAT_SEM_ID1) &&
2290 (tlphy_id2 == NAT_SEM_ID2)) {
2291 tlan_mii_read_reg(dev, phy, MII_AN_LPA,
2292 &partner);
2293 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_PAR,
2294 &tlphy_par);
2295
2296 netdev_info(dev,
2297 "Link active, %s %uMbps %s-Duplex\n",
2298 !(tlphy_par & TLAN_PHY_AN_EN_STAT)
2299 ? "forced" : "Autonegotiation enabled,",
2300 tlphy_par & TLAN_PHY_SPEED_100
2301 ? 100 : 10,
2302 tlphy_par & TLAN_PHY_DUPLEX_FULL
2303 ? "Full" : "Half");
2304
2305 if (tlphy_par & TLAN_PHY_AN_EN_STAT) {
2306 netdev_info(dev, "Partner capability:");
2307 for (i = 5; i < 10; i++)
2308 if (partner & (1 << i))
2309 pr_cont(" %s",
2310 media[i-5]);
2311 pr_cont("\n");
2312 }
2313 } else
2314 netdev_info(dev, "Link active\n");
2315 /* Enabling link beat monitoring */
c0a87c22
OZ		 2316 priv->media_timer.expires = jiffies + HZ;
2317 add_timer(&priv->media_timer);
1da177e4
LT		 2318 }
2319 }
2320
c659c38b
SA		 2321 if (priv->phy_num == 0) {
2322 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl);
2323 tlphy_ctl |= TLAN_TC_INTEN;
2324 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tlphy_ctl);
2325 sio = tlan_dio_read8(dev->base_addr, TLAN_NET_SIO);
2326 sio |= TLAN_NET_SIO_MINTEN;
2327 tlan_dio_write8(dev->base_addr, TLAN_NET_SIO, sio);
2328 }
2329
2330 if (status & MII_GS_LINK) {
2331 tlan_set_mac(dev, 0, dev->dev_addr);
2332 priv->phy_online = 1;
2333 outb((TLAN_HC_INT_ON >> 8), dev->base_addr + TLAN_HOST_CMD + 1);
2334 if (debug >= 1 && debug != TLAN_DEBUG_PROBE)
2335 outb((TLAN_HC_REQ_INT >> 8),
2336 dev->base_addr + TLAN_HOST_CMD + 1);
2337 outl(priv->rx_list_dma, dev->base_addr + TLAN_CH_PARM);
2338 outl(TLAN_HC_GO | TLAN_HC_RT, dev->base_addr + TLAN_HOST_CMD);
c0a87c22 2339 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK);
1da177e4
LT		 2340 netif_carrier_on(dev);
2341 } else {
50624aab 2342 netdev_info(dev, "Link inactive, will retry in 10 secs...\n");
c659c38b 2343 tlan_set_timer(dev, (10*HZ), TLAN_TIMER_FINISH_RESET);
1da177e4
LT		 2344 return;
2345 }
c659c38b 2346 tlan_set_multicast_list(dev);
1da177e4 2347
c659c38b 2348}
1da177e4
LT		 2349
2350
2351
2352
c659c38b
SA		 2353/***************************************************************
2354 * tlan_set_mac
2355 *
2356 * Returns:
2357 * Nothing
2358 * Parms:
2359 * dev Pointer to device structure of adapter
2360 * on which to change the AREG.
2361 * areg The AREG to set the address in (0 - 3).
2362 * mac A pointer to an array of chars. Each
2363 * element stores one byte of the address.
2364 * IE, it isn't in ascii.
2365 *
2366 * This function transfers a MAC address to one of the
2367 * TLAN AREGs (address registers). The TLAN chip locks
2368 * the register on writing to offset 0 and unlocks the
2369 * register after writing to offset 5. If NULL is passed
2370 * in mac, then the AREG is filled with 0's.
2371 *
2372 **************************************************************/
1da177e4 2373
c659c38b 2374static void tlan_set_mac(struct net_device *dev, int areg, char *mac)
1da177e4
LT		 2375{
2376 int i;
6aa20a22 2377
1da177e4
LT		 2378 areg *= 6;
2379
c659c38b
SA		 2380 if (mac != NULL) {
2381 for (i = 0; i < 6; i++)
2382 tlan_dio_write8(dev->base_addr,
2383 TLAN_AREG_0 + areg + i, mac[i]);
1da177e4 2384 } else {
c659c38b
SA		 2385 for (i = 0; i < 6; i++)
2386 tlan_dio_write8(dev->base_addr,
2387 TLAN_AREG_0 + areg + i, 0);
1da177e4
LT		 2388 }
2389
c659c38b 2390}
1da177e4
LT		 2391
2392
2393
2394
2395/*****************************************************************************
2396******************************************************************************
2397
c659c38b 2398ThunderLAN driver PHY layer routines
1da177e4
LT		 2399
2400******************************************************************************
2401*****************************************************************************/
2402
2403
2404
c659c38b
SA		 2405/*********************************************************************
2406 * tlan_phy_print
2407 *
2408 * Returns:
2409 * Nothing
2410 * Parms:
2411 * dev A pointer to the device structure of the
2412 * TLAN device having the PHYs to be detailed.
2413 *
2414 * This function prints the registers a PHY (aka transceiver).
2415 *
2416 ********************************************************************/
1da177e4 2417
c659c38b 2418static void tlan_phy_print(struct net_device *dev)
1da177e4 2419{
c659c38b 2420 struct tlan_priv *priv = netdev_priv(dev);
1da177e4
LT		 2421 u16 i, data0, data1, data2, data3, phy;
2422
c659c38b
SA		 2423 phy = priv->phy[priv->phy_num];
2424
2425 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
50624aab 2426 netdev_info(dev, "Unmanaged PHY\n");
c659c38b 2427 } else if (phy <= TLAN_PHY_MAX_ADDR) {
50624aab
JP		 2428 netdev_info(dev, "PHY 0x%02x\n", phy);
2429 pr_info(" Off. +0 +1 +2 +3\n");
c659c38b 2430 for (i = 0; i < 0x20; i += 4) {
c659c38b 2431 tlan_mii_read_reg(dev, phy, i, &data0);
c659c38b 2432 tlan_mii_read_reg(dev, phy, i + 1, &data1);
c659c38b 2433 tlan_mii_read_reg(dev, phy, i + 2, &data2);
c659c38b 2434 tlan_mii_read_reg(dev, phy, i + 3, &data3);
50624aab
JP		 2435 pr_info(" 0x%02x 0x%04hx 0x%04hx 0x%04hx 0x%04hx\n",
2436 i, data0, data1, data2, data3);
1da177e4
LT		 2437 }
2438 } else {
50624aab 2439 netdev_info(dev, "Invalid PHY\n");
1da177e4
LT		 2440 }
2441
c659c38b 2442}
1da177e4
LT		 2443
2444
2445
2446
c659c38b
SA		 2447/*********************************************************************
2448 * tlan_phy_detect
2449 *
2450 * Returns:
2451 * Nothing
2452 * Parms:
2453 * dev A pointer to the device structure of the adapter
2454 * for which the PHY needs determined.
2455 *
2456 * So far I've found that adapters which have external PHYs
2457 * may also use the internal PHY for part of the functionality.
2458 * (eg, AUI/Thinnet). This function finds out if this TLAN
2459 * chip has an internal PHY, and then finds the first external
2460 * PHY (starting from address 0) if it exists).
2461 *
2462 ********************************************************************/
1da177e4 2463
c659c38b 2464static void tlan_phy_detect(struct net_device *dev)
1da177e4 2465{
c659c38b 2466 struct tlan_priv *priv = netdev_priv(dev);
1da177e4
LT		 2467 u16 control;
2468 u16 hi;
2469 u16 lo;
2470 u32 phy;
2471
c659c38b
SA		 2472 if (priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY) {
2473 priv->phy_num = 0xffff;
1da177e4
LT		 2474 return;
2475 }
2476
c659c38b 2477 tlan_mii_read_reg(dev, TLAN_PHY_MAX_ADDR, MII_GEN_ID_HI, &hi);
6aa20a22 2478
c659c38b 2479 if (hi != 0xffff)
1da177e4 2480 priv->phy[0] = TLAN_PHY_MAX_ADDR;
c659c38b 2481 else
1da177e4 2482 priv->phy[0] = TLAN_PHY_NONE;
1da177e4
LT		 2483
2484 priv->phy[1] = TLAN_PHY_NONE;
c659c38b
SA		 2485 for (phy = 0; phy <= TLAN_PHY_MAX_ADDR; phy++) {
2486 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &control);
2487 tlan_mii_read_reg(dev, phy, MII_GEN_ID_HI, &hi);
2488 tlan_mii_read_reg(dev, phy, MII_GEN_ID_LO, &lo);
2489 if ((control != 0xffff) ||
2490 (hi != 0xffff) || (lo != 0xffff)) {
2491 TLAN_DBG(TLAN_DEBUG_GNRL,
2492 "PHY found at %02x %04x %04x %04x\n",
2493 phy, control, hi, lo);
2494 if ((priv->phy[1] == TLAN_PHY_NONE) &&
2495 (phy != TLAN_PHY_MAX_ADDR)) {
1da177e4
LT		 2496 priv->phy[1] = phy;
2497 }
2498 }
2499 }
2500
c659c38b
SA		 2501 if (priv->phy[1] != TLAN_PHY_NONE)
2502 priv->phy_num = 1;
2503 else if (priv->phy[0] != TLAN_PHY_NONE)
2504 priv->phy_num = 0;
2505 else
50624aab 2506 netdev_info(dev, "Cannot initialize device, no PHY was found!\n");
1da177e4 2507
c659c38b 2508}
1da177e4
LT		 2509
2510
2511
2512
c659c38b 2513static void tlan_phy_power_down(struct net_device *dev)
1da177e4 2514{
c659c38b 2515 struct tlan_priv *priv = netdev_priv(dev);
1da177e4
LT		 2516 u16 value;
2517
c659c38b 2518 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering down PHY(s).\n", dev->name);
1da177e4 2519 value = MII_GC_PDOWN | MII_GC_LOOPBK | MII_GC_ISOLATE;
c659c38b
SA		 2520 tlan_mii_sync(dev->base_addr);
2521 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
9162e7e5
OZ		 2522 if ((priv->phy_num == 0) && (priv->phy[1] != TLAN_PHY_NONE)) {
2523 /* if using internal PHY, the external PHY must be powered on */
2524 if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10)
2525 value = MII_GC_ISOLATE; /* just isolate it from MII */
c659c38b
SA		 2526 tlan_mii_sync(dev->base_addr);
2527 tlan_mii_write_reg(dev, priv->phy[1], MII_GEN_CTL, value);
1da177e4
LT		 2528 }
2529
2530 /* Wait for 50 ms and powerup
2531 * This is abitrary. It is intended to make sure the
2532 * transceiver settles.
2533 */
51fd9471 2534 tlan_set_timer(dev, msecs_to_jiffies(50), TLAN_TIMER_PHY_PUP);
1da177e4 2535
c659c38b 2536}
1da177e4
LT		 2537
2538
2539
2540
c659c38b 2541static void tlan_phy_power_up(struct net_device *dev)
1da177e4 2542{
c659c38b 2543 struct tlan_priv *priv = netdev_priv(dev);
1da177e4
LT		 2544 u16 value;
2545
c659c38b
SA		 2546 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Powering up PHY.\n", dev->name);
2547 tlan_mii_sync(dev->base_addr);
1da177e4 2548 value = MII_GC_LOOPBK;
c659c38b
SA		 2549 tlan_mii_write_reg(dev, priv->phy[priv->phy_num], MII_GEN_CTL, value);
2550 tlan_mii_sync(dev->base_addr);
1da177e4
LT		 2551 /* Wait for 500 ms and reset the
2552 * transceiver. The TLAN docs say both 50 ms and
2553 * 500 ms, so do the longer, just in case.
2554 */
b5057dd7 2555 tlan_set_timer(dev, msecs_to_jiffies(500), TLAN_TIMER_PHY_RESET);
1da177e4 2556
c659c38b 2557}
1da177e4
LT		 2558
2559
2560
2561
c659c38b 2562static void tlan_phy_reset(struct net_device *dev)
1da177e4 2563{
c659c38b 2564 struct tlan_priv *priv = netdev_priv(dev);
1da177e4
LT		 2565 u16 phy;
2566 u16 value;
9cff441e 2567 unsigned long timeout = jiffies + HZ;
1da177e4 2568
c659c38b 2569 phy = priv->phy[priv->phy_num];
1da177e4 2570
fd9071ec 2571 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Resetting PHY.\n", dev->name);
c659c38b 2572 tlan_mii_sync(dev->base_addr);
1da177e4 2573 value = MII_GC_LOOPBK | MII_GC_RESET;
c659c38b 2574 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, value);
9cff441e 2575 do {
c659c38b 2576 tlan_mii_read_reg(dev, phy, MII_GEN_CTL, &value);
9cff441e
OZ		 2577 if (time_after(jiffies, timeout)) {
2578 netdev_err(dev, "PHY reset timeout\n");
2579 return;
2580 }
2581 } while (value & MII_GC_RESET);
1da177e4
LT		 2582
2583 /* Wait for 500 ms and initialize.
2584 * I don't remember why I wait this long.
2585 * I've changed this to 50ms, as it seems long enough.
2586 */
51fd9471 2587 tlan_set_timer(dev, msecs_to_jiffies(50), TLAN_TIMER_PHY_START_LINK);
1da177e4 2588
c659c38b 2589}
1da177e4
LT		 2590
2591
2592
2593
c659c38b 2594static void tlan_phy_start_link(struct net_device *dev)
1da177e4 2595{
c659c38b 2596 struct tlan_priv *priv = netdev_priv(dev);
1da177e4
LT		 2597 u16 ability;
2598 u16 control;
2599 u16 data;
2600 u16 phy;
2601 u16 status;
2602 u16 tctl;
2603
c659c38b
SA		 2604 phy = priv->phy[priv->phy_num];
2605 TLAN_DBG(TLAN_DEBUG_GNRL, "%s: Trying to activate link.\n", dev->name);
2606 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2607 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &ability);
1da177e4 2608
c659c38b
SA		 2609 if ((status & MII_GS_AUTONEG) &&
2610 (!priv->aui)) {
1da177e4 2611 ability = status >> 11;
c659c38b
SA		 2612 if (priv->speed == TLAN_SPEED_10 &&
2613 priv->duplex == TLAN_DUPLEX_HALF) {
2614 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0000);
2615 } else if (priv->speed == TLAN_SPEED_10 &&
2616 priv->duplex == TLAN_DUPLEX_FULL) {
2617 priv->tlan_full_duplex = true;
2618 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x0100);
2619 } else if (priv->speed == TLAN_SPEED_100 &&
2620 priv->duplex == TLAN_DUPLEX_HALF) {
2621 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2000);
2622 } else if (priv->speed == TLAN_SPEED_100 &&
2623 priv->duplex == TLAN_DUPLEX_FULL) {
2624 priv->tlan_full_duplex = true;
2625 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x2100);
1da177e4 2626 } else {
6aa20a22 2627
1da177e4 2628 /* Set Auto-Neg advertisement */
c659c38b
SA		 2629 tlan_mii_write_reg(dev, phy, MII_AN_ADV,
2630 (ability << 5) | 1);
1da177e4 2631 /* Enablee Auto-Neg */
c659c38b 2632 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1000);
1da177e4 2633 /* Restart Auto-Neg */
c659c38b 2634 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, 0x1200);
1da177e4 2635 /* Wait for 4 sec for autonegotiation
c659c38b
SA		 2636 * to complete. The max spec time is less than this
2637 * but the card need additional time to start AN.
2638 * .5 sec should be plenty extra.
2639 */
50624aab 2640 netdev_info(dev, "Starting autonegotiation\n");
c659c38b 2641 tlan_set_timer(dev, (2*HZ), TLAN_TIMER_PHY_FINISH_AN);
1da177e4
LT		 2642 return;
2643 }
6aa20a22
JG		 2644
2645 }
2646
c659c38b
SA		 2647 if ((priv->aui) && (priv->phy_num != 0)) {
2648 priv->phy_num = 0;
2649 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN
2650 | TLAN_NET_CFG_PHY_EN;
2651 tlan_dio_write16(dev->base_addr, TLAN_NET_CONFIG, data);
51fd9471 2652 tlan_set_timer(dev, msecs_to_jiffies(40), TLAN_TIMER_PHY_PDOWN);
1da177e4 2653 return;
c659c38b 2654 } else if (priv->phy_num == 0) {
1da177e4 2655 control = 0;
c659c38b
SA		 2656 tlan_mii_read_reg(dev, phy, TLAN_TLPHY_CTL, &tctl);
2657 if (priv->aui) {
2658 tctl |= TLAN_TC_AUISEL;
6aa20a22 2659 } else {
c659c38b
SA		 2660 tctl &= ~TLAN_TC_AUISEL;
2661 if (priv->duplex == TLAN_DUPLEX_FULL) {
1da177e4 2662 control |= MII_GC_DUPLEX;
c659c38b 2663 priv->tlan_full_duplex = true;
1da177e4 2664 }
c659c38b 2665 if (priv->speed == TLAN_SPEED_100)
1da177e4 2666 control |= MII_GC_SPEEDSEL;
1da177e4 2667 }
c659c38b
SA		 2668 tlan_mii_write_reg(dev, phy, MII_GEN_CTL, control);
2669 tlan_mii_write_reg(dev, phy, TLAN_TLPHY_CTL, tctl);
1da177e4
LT		 2670 }
2671
2672 /* Wait for 2 sec to give the transceiver time
2673 * to establish link.
2674 */
c659c38b 2675 tlan_set_timer(dev, (4*HZ), TLAN_TIMER_FINISH_RESET);
1da177e4 2676
c659c38b 2677}
1da177e4
LT		 2678
2679
2680
2681
c659c38b 2682static void tlan_phy_finish_auto_neg(struct net_device *dev)
1da177e4 2683{
c659c38b 2684 struct tlan_priv *priv = netdev_priv(dev);
1da177e4
LT		 2685 u16 an_adv;
2686 u16 an_lpa;
1da177e4
LT		 2687 u16 mode;
2688 u16 phy;
2689 u16 status;
6aa20a22 2690
c659c38b 2691 phy = priv->phy[priv->phy_num];
1da177e4 2692
c659c38b
SA		 2693 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
2694 udelay(1000);
2695 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &status);
1da177e4 2696
c659c38b 2697 if (!(status & MII_GS_AUTOCMPLT)) {
1da177e4
LT		 2698 /* Wait for 8 sec to give the process
2699 * more time. Perhaps we should fail after a while.
2700 */
278e48b0 2701 tlan_set_timer(dev, 2 * HZ, TLAN_TIMER_PHY_FINISH_AN);
1da177e4
LT		 2702 return;
2703 }
2704
50624aab 2705 netdev_info(dev, "Autonegotiation complete\n");
c659c38b
SA		 2706 tlan_mii_read_reg(dev, phy, MII_AN_ADV, &an_adv);
2707 tlan_mii_read_reg(dev, phy, MII_AN_LPA, &an_lpa);
1da177e4 2708 mode = an_adv & an_lpa & 0x03E0;
c659c38b
SA		 2709 if (mode & 0x0100)
2710 priv->tlan_full_duplex = true;
2711 else if (!(mode & 0x0080) && (mode & 0x0040))
2712 priv->tlan_full_duplex = true;
2713
36bbe2f4 2714 /* switch to internal PHY for 10 Mbps */
c659c38b
SA		 2715 if ((!(mode & 0x0180)) &&
2716 (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) &&
2717 (priv->phy_num != 0)) {
2718 priv->phy_num = 0;
51fd9471 2719 tlan_set_timer(dev, msecs_to_jiffies(400), TLAN_TIMER_PHY_PDOWN);
1da177e4
LT		 2720 return;
2721 }
2722
c659c38b
SA		 2723 if (priv->phy_num == 0) {
2724 if ((priv->duplex == TLAN_DUPLEX_FULL) ||
2725 (an_adv & an_lpa & 0x0040)) {
2726 tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2727 MII_GC_AUTOENB | MII_GC_DUPLEX);
50624aab 2728 netdev_info(dev, "Starting internal PHY with FULL-DUPLEX\n");
1da177e4 2729 } else {
c659c38b
SA		 2730 tlan_mii_write_reg(dev, phy, MII_GEN_CTL,
2731 MII_GC_AUTOENB);
50624aab 2732 netdev_info(dev, "Starting internal PHY with HALF-DUPLEX\n");
1da177e4
LT		 2733 }
2734 }
2735
2736 /* Wait for 100 ms. No reason in partiticular.
2737 */
51fd9471 2738 tlan_set_timer(dev, msecs_to_jiffies(100), TLAN_TIMER_FINISH_RESET);
6aa20a22 2739
c659c38b 2740}
1da177e4 2741
1da177e4 2742
c659c38b
SA		 2743/*********************************************************************
2744 *
2745 * tlan_phy_monitor
2746 *
2747 * Returns:
2748 * None
2749 *
2750 * Params:
c0a87c22 2751 * data The device structure of this device.
c659c38b
SA		 2752 *
2753 *
2754 * This function monitors PHY condition by reading the status
c0a87c22
OZ		 2755 * register via the MII bus, controls LINK LED and notifies the
2756 * kernel about link state.
c659c38b
SA		 2757 *
2758 *******************************************************************/
2759
0010e3f8 2760static void tlan_phy_monitor(struct timer_list *t)
1da177e4 2761{
0010e3f8
KC		 2762 struct tlan_priv *priv = from_timer(priv, t, media_timer);
2763 struct net_device *dev = priv->dev;
1da177e4
LT		 2764 u16 phy;
2765 u16 phy_status;
2766
c659c38b 2767 phy = priv->phy[priv->phy_num];
1da177e4 2768
c659c38b
SA		 2769 /* Get PHY status register */
2770 tlan_mii_read_reg(dev, phy, MII_GEN_STS, &phy_status);
1da177e4 2771
c659c38b
SA		 2772 /* Check if link has been lost */
2773 if (!(phy_status & MII_GS_LINK)) {
c0a87c22 2774 if (netif_carrier_ok(dev)) {
c659c38b
SA		 2775 printk(KERN_DEBUG "TLAN: %s has lost link\n",
2776 dev->name);
c0a87c22 2777 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, 0);
c659c38b 2778 netif_carrier_off(dev);
36bbe2f4
OZ		 2779 if (priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10) {
2780 /* power down internal PHY */
2781 u16 data = MII_GC_PDOWN | MII_GC_LOOPBK |
2782 MII_GC_ISOLATE;
2783
2784 tlan_mii_sync(dev->base_addr);
2785 tlan_mii_write_reg(dev, priv->phy[0],
2786 MII_GEN_CTL, data);
2787 /* set to external PHY */
2788 priv->phy_num = 1;
2789 /* restart autonegotiation */
51fd9471 2790 tlan_set_timer(dev, msecs_to_jiffies(400),
36bbe2f4
OZ		 2791 TLAN_TIMER_PHY_PDOWN);
2792 return;
2793 }
1da177e4
LT		 2794 }
2795 }
2796
c659c38b 2797 /* Link restablished? */
c0a87c22
OZ		 2798 if ((phy_status & MII_GS_LINK) && !netif_carrier_ok(dev)) {
2799 tlan_dio_write8(dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK);
c659c38b
SA		 2800 printk(KERN_DEBUG "TLAN: %s has reestablished link\n",
2801 dev->name);
7d17c1d6 2802 netif_carrier_on(dev);
c659c38b 2803 }
c0a87c22
OZ		 2804 priv->media_timer.expires = jiffies + HZ;
2805 add_timer(&priv->media_timer);
6aa20a22 2806}
1da177e4 2807
1da177e4
LT		 2808
2809/*****************************************************************************
2810******************************************************************************
2811
c659c38b 2812ThunderLAN driver MII routines
1da177e4 2813
c659c38b
SA		 2814these routines are based on the information in chap. 2 of the
2815"ThunderLAN Programmer's Guide", pp. 15-24.
1da177e4
LT		 2816
2817******************************************************************************
2818*****************************************************************************/
2819
2820
c659c38b
SA		 2821/***************************************************************
2822 * tlan_mii_read_reg
2823 *
2824 * Returns:
2825 * false if ack received ok
2826 * true if no ack received or other error
2827 *
2828 * Parms:
2829 * dev The device structure containing
2830 * The io address and interrupt count
2831 * for this device.
2832 * phy The address of the PHY to be queried.
2833 * reg The register whose contents are to be
2834 * retrieved.
2835 * val A pointer to a variable to store the
2836 * retrieved value.
2837 *
2838 * This function uses the TLAN's MII bus to retrieve the contents
2839 * of a given register on a PHY. It sends the appropriate info
2840 * and then reads the 16-bit register value from the MII bus via
2841 * the TLAN SIO register.
2842 *
2843 **************************************************************/
2844
2845static bool
2846tlan_mii_read_reg(struct net_device *dev, u16 phy, u16 reg, u16 *val)
1da177e4
LT		 2847{
2848 u8 nack;
2849 u16 sio, tmp;
c659c38b 2850 u32 i;
37fce430 2851 bool err;
1da177e4 2852 int minten;
c659c38b 2853 struct tlan_priv *priv = netdev_priv(dev);
1da177e4
LT		 2854 unsigned long flags = 0;
2855
37fce430 2856 err = false;
1da177e4
LT		 2857 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2858 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
6aa20a22 2859
1da177e4
LT		 2860 if (!in_irq())
2861 spin_lock_irqsave(&priv->lock, flags);
2862
c659c38b 2863 tlan_mii_sync(dev->base_addr);
1da177e4 2864
c659c38b
SA		 2865 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
2866 if (minten)
2867 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
1da177e4 2868
c659c38b
SA		 2869 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */
2870 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* read (10b) */
2871 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */
2872 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */
1da177e4
LT		 2873
2874
c659c38b 2875 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio); /* change direction */
1da177e4 2876
c659c38b
SA		 2877 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* clock idle bit */
2878 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2879 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* wait 300ns */
1da177e4 2880
c659c38b
SA		 2881 nack = tlan_get_bit(TLAN_NET_SIO_MDATA, sio); /* check for ACK */
2882 tlan_set_bit(TLAN_NET_SIO_MCLK, sio); /* finish ACK */
2883 if (nack) { /* no ACK, so fake it */
1da177e4 2884 for (i = 0; i < 16; i++) {
c659c38b
SA		 2885 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2886 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
1da177e4
LT		 2887 }
2888 tmp = 0xffff;
37fce430 2889 err = true;
1da177e4
LT		 2890 } else { /* ACK, so read data */
2891 for (tmp = 0, i = 0x8000; i; i >>= 1) {
c659c38b
SA		 2892 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2893 if (tlan_get_bit(TLAN_NET_SIO_MDATA, sio))
1da177e4 2894 tmp |= i;
c659c38b 2895 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
1da177e4
LT		 2896 }
2897 }
2898
2899
c659c38b
SA		 2900 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
2901 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
1da177e4 2902
c659c38b
SA		 2903 if (minten)
2904 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
1da177e4
LT		 2905
2906 *val = tmp;
6aa20a22 2907
1da177e4
LT		 2908 if (!in_irq())
2909 spin_unlock_irqrestore(&priv->lock, flags);
2910
2911 return err;
2912
c659c38b 2913}
1da177e4
LT		 2914
2915
2916
2917
c659c38b
SA		 2918/***************************************************************
2919 * tlan_mii_send_data
2920 *
2921 * Returns:
2922 * Nothing
2923 * Parms:
2924 * base_port The base IO port of the adapter in
2925 * question.
2926 * dev The address of the PHY to be queried.
2927 * data The value to be placed on the MII bus.
2928 * num_bits The number of bits in data that are to
2929 * be placed on the MII bus.
2930 *
2931 * This function sends on sequence of bits on the MII
2932 * configuration bus.
2933 *
2934 **************************************************************/
1da177e4 2935
c659c38b 2936static void tlan_mii_send_data(u16 base_port, u32 data, unsigned num_bits)
1da177e4
LT		 2937{
2938 u16 sio;
2939 u32 i;
2940
c659c38b 2941 if (num_bits == 0)
1da177e4
LT		 2942 return;
2943
c659c38b 2944 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
1da177e4 2945 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
c659c38b 2946 tlan_set_bit(TLAN_NET_SIO_MTXEN, sio);
1da177e4 2947
c659c38b
SA		 2948 for (i = (0x1 << (num_bits - 1)); i; i >>= 1) {
2949 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2950 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
2951 if (data & i)
2952 tlan_set_bit(TLAN_NET_SIO_MDATA, sio);
1da177e4 2953 else
c659c38b
SA		 2954 tlan_clear_bit(TLAN_NET_SIO_MDATA, sio);
2955 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
2956 (void) tlan_get_bit(TLAN_NET_SIO_MCLK, sio);
1da177e4
LT		 2957 }
2958
c659c38b 2959}
1da177e4
LT		 2960
2961
2962
2963
c659c38b
SA		 2964/***************************************************************
2965 * TLan_MiiSync
2966 *
2967 * Returns:
2968 * Nothing
2969 * Parms:
2970 * base_port The base IO port of the adapter in
2971 * question.
2972 *
2973 * This functions syncs all PHYs in terms of the MII configuration
2974 * bus.
2975 *
2976 **************************************************************/
1da177e4 2977
c659c38b 2978static void tlan_mii_sync(u16 base_port)
1da177e4
LT		 2979{
2980 int i;
2981 u16 sio;
2982
c659c38b 2983 outw(TLAN_NET_SIO, base_port + TLAN_DIO_ADR);
1da177e4
LT		 2984 sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2985
c659c38b
SA		 2986 tlan_clear_bit(TLAN_NET_SIO_MTXEN, sio);
2987 for (i = 0; i < 32; i++) {
2988 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio);
2989 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
1da177e4
LT		 2990 }
2991
c659c38b 2992}
1da177e4
LT		 2993
2994
2995
2996
c659c38b
SA		 2997/***************************************************************
2998 * tlan_mii_write_reg
2999 *
3000 * Returns:
3001 * Nothing
3002 * Parms:
3003 * dev The device structure for the device
3004 * to write to.
3005 * phy The address of the PHY to be written to.
3006 * reg The register whose contents are to be
3007 * written.
3008 * val The value to be written to the register.
3009 *
3010 * This function uses the TLAN's MII bus to write the contents of a
3011 * given register on a PHY. It sends the appropriate info and then
3012 * writes the 16-bit register value from the MII configuration bus
3013 * via the TLAN SIO register.
3014 *
3015 **************************************************************/
1da177e4 3016
c659c38b
SA		 3017static void
3018tlan_mii_write_reg(struct net_device *dev, u16 phy, u16 reg, u16 val)
1da177e4
LT		 3019{
3020 u16 sio;
3021 int minten;
3022 unsigned long flags = 0;
c659c38b 3023 struct tlan_priv *priv = netdev_priv(dev);
1da177e4
LT		 3024
3025 outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
3026 sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
6aa20a22 3027
1da177e4
LT		 3028 if (!in_irq())
3029 spin_lock_irqsave(&priv->lock, flags);
3030
c659c38b 3031 tlan_mii_sync(dev->base_addr);
1da177e4 3032
c659c38b
SA		 3033 minten = tlan_get_bit(TLAN_NET_SIO_MINTEN, sio);
3034 if (minten)
3035 tlan_clear_bit(TLAN_NET_SIO_MINTEN, sio);
1da177e4 3036
c659c38b
SA		 3037 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* start (01b) */
3038 tlan_mii_send_data(dev->base_addr, 0x1, 2); /* write (01b) */
3039 tlan_mii_send_data(dev->base_addr, phy, 5); /* device # */
3040 tlan_mii_send_data(dev->base_addr, reg, 5); /* register # */
1da177e4 3041
c659c38b
SA		 3042 tlan_mii_send_data(dev->base_addr, 0x2, 2); /* send ACK */
3043 tlan_mii_send_data(dev->base_addr, val, 16); /* send data */
1da177e4 3044
c659c38b
SA		 3045 tlan_clear_bit(TLAN_NET_SIO_MCLK, sio); /* idle cycle */
3046 tlan_set_bit(TLAN_NET_SIO_MCLK, sio);
1da177e4 3047
c659c38b
SA		 3048 if (minten)
3049 tlan_set_bit(TLAN_NET_SIO_MINTEN, sio);
6aa20a22 3050
1da177e4
LT		 3051 if (!in_irq())
3052 spin_unlock_irqrestore(&priv->lock, flags);
3053
c659c38b 3054}
1da177e4
LT		 3055
3056
3057
3058
3059/*****************************************************************************
3060******************************************************************************
3061
c659c38b 3062ThunderLAN driver eeprom routines
1da177e4 3063
c659c38b
SA		 3064the Compaq netelligent 10 and 10/100 cards use a microchip 24C02A
3065EEPROM. these functions are based on information in microchip's
3066data sheet. I don't know how well this functions will work with
3067other Eeproms.
1da177e4
LT		 3068
3069******************************************************************************
3070*****************************************************************************/
3071
3072
c659c38b
SA		 3073/***************************************************************
3074 * tlan_ee_send_start
3075 *
3076 * Returns:
3077 * Nothing
3078 * Parms:
3079 * io_base The IO port base address for the
3080 * TLAN device with the EEPROM to
3081 * use.
3082 *
3083 * This function sends a start cycle to an EEPROM attached
3084 * to a TLAN chip.
3085 *
3086 **************************************************************/
3087
3088static void tlan_ee_send_start(u16 io_base)
1da177e4
LT		 3089{
3090 u16 sio;
3091
c659c38b 3092 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
1da177e4
LT		 3093 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3094
c659c38b
SA		 3095 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3096 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3097 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3098 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3099 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3100
3101}
3102
3103
3104
3105
3106/***************************************************************
3107 * tlan_ee_send_byte
3108 *
3109 * Returns:
3110 * If the correct ack was received, 0, otherwise 1
3111 * Parms: io_base The IO port base address for the
3112 * TLAN device with the EEPROM to
3113 * use.
3114 * data The 8 bits of information to
3115 * send to the EEPROM.
3116 * stop If TLAN_EEPROM_STOP is passed, a
3117 * stop cycle is sent after the
3118 * byte is sent after the ack is
3119 * read.
3120 *
3121 * This function sends a byte on the serial EEPROM line,
3122 * driving the clock to send each bit. The function then
3123 * reverses transmission direction and reads an acknowledge
3124 * bit.
3125 *
3126 **************************************************************/
3127
3128static int tlan_ee_send_byte(u16 io_base, u8 data, int stop)
1da177e4
LT		 3129{
3130 int err;
3131 u8 place;
3132 u16 sio;
3133
c659c38b 3134 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
1da177e4
LT		 3135 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3136
3137 /* Assume clock is low, tx is enabled; */
c659c38b
SA		 3138 for (place = 0x80; place != 0; place >>= 1) {
3139 if (place & data)
3140 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
1da177e4 3141 else
c659c38b
SA		 3142 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3143 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3144 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
1da177e4 3145 }
c659c38b
SA		 3146 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3147 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3148 err = tlan_get_bit(TLAN_NET_SIO_EDATA, sio);
3149 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
3150 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
1da177e4 3151
c659c38b 3152 if ((!err) && stop) {
dfc2c0a6 3153 /* STOP, raise data while clock is high */
c659c38b
SA		 3154 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3155 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3156 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
1da177e4
LT		 3157 }
3158
807540ba 3159 return err;
1da177e4 3160
c659c38b
SA		 3161}
3162
3163
3164
3165
3166/***************************************************************
3167 * tlan_ee_receive_byte
3168 *
3169 * Returns:
3170 * Nothing
3171 * Parms:
3172 * io_base The IO port base address for the
3173 * TLAN device with the EEPROM to
3174 * use.
3175 * data An address to a char to hold the
3176 * data sent from the EEPROM.
3177 * stop If TLAN_EEPROM_STOP is passed, a
3178 * stop cycle is sent after the
3179 * byte is received, and no ack is
3180 * sent.
3181 *
3182 * This function receives 8 bits of data from the EEPROM
3183 * over the serial link. It then sends and ack bit, or no
3184 * ack and a stop bit. This function is used to retrieve
3185 * data after the address of a byte in the EEPROM has been
3186 * sent.
3187 *
3188 **************************************************************/
3189
3190static void tlan_ee_receive_byte(u16 io_base, u8 *data, int stop)
1da177e4
LT		 3191{
3192 u8 place;
3193 u16 sio;
3194
c659c38b 3195 outw(TLAN_NET_SIO, io_base + TLAN_DIO_ADR);
1da177e4
LT		 3196 sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3197 *data = 0;
3198
3199 /* Assume clock is low, tx is enabled; */
c659c38b
SA		 3200 tlan_clear_bit(TLAN_NET_SIO_ETXEN, sio);
3201 for (place = 0x80; place; place >>= 1) {
3202 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3203 if (tlan_get_bit(TLAN_NET_SIO_EDATA, sio))
1da177e4 3204 *data |= place;
c659c38b 3205 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
1da177e4
LT		 3206 }
3207
c659c38b
SA		 3208 tlan_set_bit(TLAN_NET_SIO_ETXEN, sio);
3209 if (!stop) {
3210 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio); /* ack = 0 */
3211 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3212 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
1da177e4 3213 } else {
c659c38b
SA		 3214 tlan_set_bit(TLAN_NET_SIO_EDATA, sio); /* no ack = 1 (?) */
3215 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3216 tlan_clear_bit(TLAN_NET_SIO_ECLOK, sio);
dfc2c0a6 3217 /* STOP, raise data while clock is high */
c659c38b
SA		 3218 tlan_clear_bit(TLAN_NET_SIO_EDATA, sio);
3219 tlan_set_bit(TLAN_NET_SIO_ECLOK, sio);
3220 tlan_set_bit(TLAN_NET_SIO_EDATA, sio);
3221 }
3222
3223}
3224
3225
3226
3227
3228/***************************************************************
3229 * tlan_ee_read_byte
3230 *
3231 * Returns:
3232 * No error = 0, else, the stage at which the error
3233 * occurred.
3234 * Parms:
3235 * io_base The IO port base address for the
3236 * TLAN device with the EEPROM to
3237 * use.
3238 * ee_addr The address of the byte in the
3239 * EEPROM whose contents are to be
3240 * retrieved.
3241 * data An address to a char to hold the
3242 * data obtained from the EEPROM.
3243 *
3244 * This function reads a byte of information from an byte
3245 * cell in the EEPROM.
3246 *
3247 **************************************************************/
3248
3249static int tlan_ee_read_byte(struct net_device *dev, u8 ee_addr, u8 *data)
1da177e4
LT		 3250{
3251 int err;
c659c38b 3252 struct tlan_priv *priv = netdev_priv(dev);
1da177e4 3253 unsigned long flags = 0;
c659c38b 3254 int ret = 0;
1da177e4
LT		 3255
3256 spin_lock_irqsave(&priv->lock, flags);
3257
c659c38b
SA		 3258 tlan_ee_send_start(dev->base_addr);
3259 err = tlan_ee_send_byte(dev->base_addr, 0xa0, TLAN_EEPROM_ACK);
3260 if (err) {
3261 ret = 1;
1da177e4
LT		 3262 goto fail;
3263 }
c659c38b
SA		 3264 err = tlan_ee_send_byte(dev->base_addr, ee_addr, TLAN_EEPROM_ACK);
3265 if (err) {
3266 ret = 2;
1da177e4
LT		 3267 goto fail;
3268 }
c659c38b
SA		 3269 tlan_ee_send_start(dev->base_addr);
3270 err = tlan_ee_send_byte(dev->base_addr, 0xa1, TLAN_EEPROM_ACK);
3271 if (err) {
3272 ret = 3;
1da177e4
LT		 3273 goto fail;
3274 }
c659c38b 3275 tlan_ee_receive_byte(dev->base_addr, data, TLAN_EEPROM_STOP);
1da177e4
LT		 3276fail:
3277 spin_unlock_irqrestore(&priv->lock, flags);
3278
3279 return ret;
3280
c659c38b 3281}
1da177e4
LT		 3282
3283
3284
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