net: convert multicast list to list_head
[linux-2.6.git] / drivers / net / tlan.c
1 /*******************************************************************************
2  *
3  *  Linux ThunderLAN Driver
4  *
5  *  tlan.c
6  *  by James Banks
7  *
8  *  (C) 1997-1998 Caldera, Inc.
9  *  (C) 1998 James Banks
10  *  (C) 1999-2001 Torben Mathiasen
11  *  (C) 2002 Samuel Chessman
12  *
13  *  This software may be used and distributed according to the terms
14  *  of the GNU General Public License, incorporated herein by reference.
15  *
16  ** Useful (if not required) reading:
17  *
18  *              Texas Instruments, ThunderLAN Programmer's Guide,
19  *                      TI Literature Number SPWU013A
20  *                      available in PDF format from www.ti.com
21  *              Level One, LXT901 and LXT970 Data Sheets
22  *                      available in PDF format from www.level1.com
23  *              National Semiconductor, DP83840A Data Sheet
24  *                      available in PDF format from www.national.com
25  *              Microchip Technology, 24C01A/02A/04A Data Sheet
26  *                      available in PDF format from www.microchip.com
27  *
28  * Change History
29  *
30  *      Tigran Aivazian <tigran@sco.com>:       TLan_PciProbe() now uses
31  *                                              new PCI BIOS interface.
32  *      Alan Cox        <alan@lxorguk.ukuu.org.uk>:
33  *                                              Fixed the out of memory
34  *                                              handling.
35  *
36  *      Torben Mathiasen <torben.mathiasen@compaq.com> New Maintainer!
37  *
38  *      v1.1 Dec 20, 1999    - Removed linux version checking
39  *                             Patch from Tigran Aivazian.
40  *                           - v1.1 includes Alan's SMP updates.
41  *                           - We still have problems on SMP though,
42  *                             but I'm looking into that.
43  *
44  *      v1.2 Jan 02, 2000    - Hopefully fixed the SMP deadlock.
45  *                           - Removed dependency of HZ being 100.
46  *                           - We now allow higher priority timers to
47  *                             overwrite timers like TLAN_TIMER_ACTIVITY
48  *                             Patch from John Cagle <john.cagle@compaq.com>.
49  *                           - Fixed a few compiler warnings.
50  *
51  *      v1.3 Feb 04, 2000    - Fixed the remaining HZ issues.
52  *                           - Removed call to pci_present().
53  *                           - Removed SA_INTERRUPT flag from irq handler.
54  *                           - Added __init and __initdata to reduce resisdent
55  *                             code size.
56  *                           - Driver now uses module_init/module_exit.
57  *                           - Rewrote init_module and tlan_probe to
58  *                             share a lot more code. We now use tlan_probe
59  *                             with builtin and module driver.
60  *                           - Driver ported to new net API.
61  *                           - tlan.txt has been reworked to reflect current
62  *                             driver (almost)
63  *                           - Other minor stuff
64  *
65  *      v1.4 Feb 10, 2000    - Updated with more changes required after Dave's
66  *                             network cleanup in 2.3.43pre7 (Tigran & myself)
67  *                           - Minor stuff.
68  *
69  *      v1.5 March 22, 2000  - Fixed another timer bug that would hang the driver
70  *                             if no cable/link were present.
71  *                           - Cosmetic changes.
72  *                           - TODO: Port completely to new PCI/DMA API
73  *                                   Auto-Neg fallback.
74  *
75  *      v1.6 April 04, 2000  - Fixed driver support for kernel-parameters. Haven't
76  *                             tested it though, as the kernel support is currently
77  *                             broken (2.3.99p4p3).
78  *                           - Updated tlan.txt accordingly.
79  *                           - Adjusted minimum/maximum frame length.
80  *                           - There is now a TLAN website up at
81  *                             http://tlan.kernel.dk
82  *
83  *      v1.7 April 07, 2000  - Started to implement custom ioctls. Driver now
84  *                             reports PHY information when used with Donald
85  *                             Beckers userspace MII diagnostics utility.
86  *
87  *      v1.8 April 23, 2000  - Fixed support for forced speed/duplex settings.
88  *                           - Added link information to Auto-Neg and forced
89  *                             modes. When NIC operates with auto-neg the driver
90  *                             will report Link speed & duplex modes as well as
91  *                             link partner abilities. When forced link is used,
92  *                             the driver will report status of the established
93  *                             link.
94  *                             Please read tlan.txt for additional information.
95  *                           - Removed call to check_region(), and used
96  *                             return value of request_region() instead.
97  *
98  *      v1.8a May 28, 2000   - Minor updates.
99  *
100  *      v1.9 July 25, 2000   - Fixed a few remaining Full-Duplex issues.
101  *                           - Updated with timer fixes from Andrew Morton.
102  *                           - Fixed module race in TLan_Open.
103  *                           - Added routine to monitor PHY status.
104  *                           - Added activity led support for Proliant devices.
105  *
106  *      v1.10 Aug 30, 2000   - Added support for EISA based tlan controllers
107  *                             like the Compaq NetFlex3/E.
108  *                           - Rewrote tlan_probe to better handle multiple
109  *                             bus probes. Probing and device setup is now
110  *                             done through TLan_Probe and TLan_init_one. Actual
111  *                             hardware probe is done with kernel API and
112  *                             TLan_EisaProbe.
113  *                           - Adjusted debug information for probing.
114  *                           - Fixed bug that would cause general debug information
115  *                             to be printed after driver removal.
116  *                           - Added transmit timeout handling.
117  *                           - Fixed OOM return values in tlan_probe.
118  *                           - Fixed possible mem leak in tlan_exit
119  *                             (now tlan_remove_one).
120  *                           - Fixed timer bug in TLan_phyMonitor.
121  *                           - This driver version is alpha quality, please
122  *                             send me any bug issues you may encounter.
123  *
124  *      v1.11 Aug 31, 2000   - Do not try to register irq 0 if no irq line was
125  *                             set for EISA cards.
126  *                           - Added support for NetFlex3/E with nibble-rate
127  *                             10Base-T PHY. This is untestet as I haven't got
128  *                             one of these cards.
129  *                           - Fixed timer being added twice.
130  *                           - Disabled PhyMonitoring by default as this is
131  *                             work in progress. Define MONITOR to enable it.
132  *                           - Now we don't display link info with PHYs that
133  *                             doesn't support it (level1).
134  *                           - Incresed tx_timeout beacuse of auto-neg.
135  *                           - Adjusted timers for forced speeds.
136  *
137  *      v1.12 Oct 12, 2000   - Minor fixes (memleak, init, etc.)
138  *
139  *      v1.13 Nov 28, 2000   - Stop flooding console with auto-neg issues
140  *                             when link can't be established.
141  *                           - Added the bbuf option as a kernel parameter.
142  *                           - Fixed ioaddr probe bug.
143  *                           - Fixed stupid deadlock with MII interrupts.
144  *                           - Added support for speed/duplex selection with
145  *                             multiple nics.
146  *                           - Added partly fix for TX Channel lockup with
147  *                             TLAN v1.0 silicon. This needs to be investigated
148  *                             further.
149  *
150  *      v1.14 Dec 16, 2000   - Added support for servicing multiple frames per.
151  *                             interrupt. Thanks goes to
152  *                             Adam Keys <adam@ti.com>
153  *                             Denis Beaudoin <dbeaudoin@ti.com>
154  *                             for providing the patch.
155  *                           - Fixed auto-neg output when using multiple
156  *                             adapters.
157  *                           - Converted to use new taskq interface.
158  *
159  *      v1.14a Jan 6, 2001   - Minor adjustments (spinlocks, etc.)
160  *
161  *      Samuel Chessman <chessman@tux.org> New Maintainer!
162  *
163  *      v1.15 Apr 4, 2002    - Correct operation when aui=1 to be
164  *                             10T half duplex no loopback
165  *                             Thanks to Gunnar Eikman
166  *
167  *      Sakari Ailus <sakari.ailus@iki.fi>:
168  *
169  *      v1.15a Dec 15 2008   - Remove bbuf support, it doesn't work anyway.
170  *
171  *******************************************************************************/
172
173 #include <linux/module.h>
174 #include <linux/init.h>
175 #include <linux/ioport.h>
176 #include <linux/eisa.h>
177 #include <linux/pci.h>
178 #include <linux/dma-mapping.h>
179 #include <linux/netdevice.h>
180 #include <linux/etherdevice.h>
181 #include <linux/delay.h>
182 #include <linux/spinlock.h>
183 #include <linux/workqueue.h>
184 #include <linux/mii.h>
185
186 #include "tlan.h"
187
188 typedef u32 (TLanIntVectorFunc)( struct net_device *, u16 );
189
190
191 /* For removing EISA devices */
192 static  struct net_device       *TLan_Eisa_Devices;
193
194 static  int             TLanDevicesInstalled;
195
196 /* Set speed, duplex and aui settings */
197 static  int aui[MAX_TLAN_BOARDS];
198 static  int duplex[MAX_TLAN_BOARDS];
199 static  int speed[MAX_TLAN_BOARDS];
200 static  int boards_found;
201 module_param_array(aui, int, NULL, 0);
202 module_param_array(duplex, int, NULL, 0);
203 module_param_array(speed, int, NULL, 0);
204 MODULE_PARM_DESC(aui, "ThunderLAN use AUI port(s) (0-1)");
205 MODULE_PARM_DESC(duplex, "ThunderLAN duplex setting(s) (0-default, 1-half, 2-full)");
206 MODULE_PARM_DESC(speed, "ThunderLAN port speen setting(s) (0,10,100)");
207
208 MODULE_AUTHOR("Maintainer: Samuel Chessman <chessman@tux.org>");
209 MODULE_DESCRIPTION("Driver for TI ThunderLAN based ethernet PCI adapters");
210 MODULE_LICENSE("GPL");
211
212
213 /* Define this to enable Link beat monitoring */
214 #undef MONITOR
215
216 /* Turn on debugging. See Documentation/networking/tlan.txt for details */
217 static  int             debug;
218 module_param(debug, int, 0);
219 MODULE_PARM_DESC(debug, "ThunderLAN debug mask");
220
221 static  const char TLanSignature[] = "TLAN";
222 static  const char tlan_banner[] = "ThunderLAN driver v1.15a\n";
223 static  int tlan_have_pci;
224 static  int tlan_have_eisa;
225
226 static const char *media[] = {
227         "10BaseT-HD ", "10BaseT-FD ","100baseTx-HD ",
228         "100baseTx-FD", "100baseT4", NULL
229 };
230
231 static struct board {
232         const char      *deviceLabel;
233         u32             flags;
234         u16             addrOfs;
235 } board_info[] = {
236         { "Compaq Netelligent 10 T PCI UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
237         { "Compaq Netelligent 10/100 TX PCI UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
238         { "Compaq Integrated NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
239         { "Compaq NetFlex-3/P",
240           TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 },
241         { "Compaq NetFlex-3/P", TLAN_ADAPTER_NONE, 0x83 },
242         { "Compaq Netelligent Integrated 10/100 TX UTP",
243           TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
244         { "Compaq Netelligent Dual 10/100 TX PCI UTP", TLAN_ADAPTER_NONE, 0x83 },
245         { "Compaq Netelligent 10/100 TX Embedded UTP", TLAN_ADAPTER_NONE, 0x83 },
246         { "Olicom OC-2183/2185", TLAN_ADAPTER_USE_INTERN_10, 0x83 },
247         { "Olicom OC-2325", TLAN_ADAPTER_UNMANAGED_PHY, 0xF8 },
248         { "Olicom OC-2326", TLAN_ADAPTER_USE_INTERN_10, 0xF8 },
249         { "Compaq Netelligent 10/100 TX UTP", TLAN_ADAPTER_ACTIVITY_LED, 0x83 },
250         { "Compaq Netelligent 10 T/2 PCI UTP/Coax", TLAN_ADAPTER_NONE, 0x83 },
251         { "Compaq NetFlex-3/E",
252           TLAN_ADAPTER_ACTIVITY_LED |   /* EISA card */
253           TLAN_ADAPTER_UNMANAGED_PHY | TLAN_ADAPTER_BIT_RATE_PHY, 0x83 },
254         { "Compaq NetFlex-3/E", TLAN_ADAPTER_ACTIVITY_LED, 0x83 }, /* EISA card */
255 };
256
257 static DEFINE_PCI_DEVICE_TABLE(tlan_pci_tbl) = {
258         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL10,
259                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
260         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100,
261                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 1 },
262         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3I,
263                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 2 },
264         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_THUNDER,
265                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 3 },
266         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETFLEX3B,
267                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 4 },
268         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100PI,
269                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 5 },
270         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100D,
271                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 6 },
272         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_NETEL100I,
273                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 7 },
274         { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2183,
275                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 8 },
276         { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2325,
277                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 9 },
278         { PCI_VENDOR_ID_OLICOM, PCI_DEVICE_ID_OLICOM_OC2326,
279                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 10 },
280         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_100_WS_5100,
281                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 11 },
282         { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_NETELLIGENT_10_T2,
283                 PCI_ANY_ID, PCI_ANY_ID, 0, 0, 12 },
284         { 0,}
285 };
286 MODULE_DEVICE_TABLE(pci, tlan_pci_tbl);
287
288 static void     TLan_EisaProbe( void );
289 static void     TLan_Eisa_Cleanup( void );
290 static int      TLan_Init( struct net_device * );
291 static int      TLan_Open( struct net_device *dev );
292 static netdev_tx_t TLan_StartTx( struct sk_buff *, struct net_device *);
293 static irqreturn_t TLan_HandleInterrupt( int, void *);
294 static int      TLan_Close( struct net_device *);
295 static struct   net_device_stats *TLan_GetStats( struct net_device *);
296 static void     TLan_SetMulticastList( struct net_device *);
297 static int      TLan_ioctl( struct net_device *dev, struct ifreq *rq, int cmd);
298 static int      TLan_probe1( struct pci_dev *pdev, long ioaddr,
299                              int irq, int rev, const struct pci_device_id *ent);
300 static void     TLan_tx_timeout( struct net_device *dev);
301 static void     TLan_tx_timeout_work(struct work_struct *work);
302 static int      tlan_init_one( struct pci_dev *pdev, const struct pci_device_id *ent);
303
304 static u32      TLan_HandleTxEOF( struct net_device *, u16 );
305 static u32      TLan_HandleStatOverflow( struct net_device *, u16 );
306 static u32      TLan_HandleRxEOF( struct net_device *, u16 );
307 static u32      TLan_HandleDummy( struct net_device *, u16 );
308 static u32      TLan_HandleTxEOC( struct net_device *, u16 );
309 static u32      TLan_HandleStatusCheck( struct net_device *, u16 );
310 static u32      TLan_HandleRxEOC( struct net_device *, u16 );
311
312 static void     TLan_Timer( unsigned long );
313
314 static void     TLan_ResetLists( struct net_device * );
315 static void     TLan_FreeLists( struct net_device * );
316 static void     TLan_PrintDio( u16 );
317 static void     TLan_PrintList( TLanList *, char *, int );
318 static void     TLan_ReadAndClearStats( struct net_device *, int );
319 static void     TLan_ResetAdapter( struct net_device * );
320 static void     TLan_FinishReset( struct net_device * );
321 static void     TLan_SetMac( struct net_device *, int areg, char *mac );
322
323 static void     TLan_PhyPrint( struct net_device * );
324 static void     TLan_PhyDetect( struct net_device * );
325 static void     TLan_PhyPowerDown( struct net_device * );
326 static void     TLan_PhyPowerUp( struct net_device * );
327 static void     TLan_PhyReset( struct net_device * );
328 static void     TLan_PhyStartLink( struct net_device * );
329 static void     TLan_PhyFinishAutoNeg( struct net_device * );
330 #ifdef MONITOR
331 static void     TLan_PhyMonitor( struct net_device * );
332 #endif
333
334 /*
335 static int      TLan_PhyNop( struct net_device * );
336 static int      TLan_PhyInternalCheck( struct net_device * );
337 static int      TLan_PhyInternalService( struct net_device * );
338 static int      TLan_PhyDp83840aCheck( struct net_device * );
339 */
340
341 static bool     TLan_MiiReadReg( struct net_device *, u16, u16, u16 * );
342 static void     TLan_MiiSendData( u16, u32, unsigned );
343 static void     TLan_MiiSync( u16 );
344 static void     TLan_MiiWriteReg( struct net_device *, u16, u16, u16 );
345
346 static void     TLan_EeSendStart( u16 );
347 static int      TLan_EeSendByte( u16, u8, int );
348 static void     TLan_EeReceiveByte( u16, u8 *, int );
349 static int      TLan_EeReadByte( struct net_device *, u8, u8 * );
350
351
352 static inline void
353 TLan_StoreSKB( struct tlan_list_tag *tag, struct sk_buff *skb)
354 {
355         unsigned long addr = (unsigned long)skb;
356         tag->buffer[9].address = addr;
357         tag->buffer[8].address = upper_32_bits(addr);
358 }
359
360 static inline struct sk_buff *
361 TLan_GetSKB( const struct tlan_list_tag *tag)
362 {
363         unsigned long addr;
364
365         addr = tag->buffer[9].address;
366         addr |= (tag->buffer[8].address << 16) << 16;
367         return (struct sk_buff *) addr;
368 }
369
370
371 static TLanIntVectorFunc *TLanIntVector[TLAN_INT_NUMBER_OF_INTS] = {
372         NULL,
373         TLan_HandleTxEOF,
374         TLan_HandleStatOverflow,
375         TLan_HandleRxEOF,
376         TLan_HandleDummy,
377         TLan_HandleTxEOC,
378         TLan_HandleStatusCheck,
379         TLan_HandleRxEOC
380 };
381
382 static inline void
383 TLan_SetTimer( struct net_device *dev, u32 ticks, u32 type )
384 {
385         TLanPrivateInfo *priv = netdev_priv(dev);
386         unsigned long flags = 0;
387
388         if (!in_irq())
389                 spin_lock_irqsave(&priv->lock, flags);
390         if ( priv->timer.function != NULL &&
391                 priv->timerType != TLAN_TIMER_ACTIVITY ) {
392                 if (!in_irq())
393                         spin_unlock_irqrestore(&priv->lock, flags);
394                 return;
395         }
396         priv->timer.function = &TLan_Timer;
397         if (!in_irq())
398                 spin_unlock_irqrestore(&priv->lock, flags);
399
400         priv->timer.data = (unsigned long) dev;
401         priv->timerSetAt = jiffies;
402         priv->timerType = type;
403         mod_timer(&priv->timer, jiffies + ticks);
404
405 } /* TLan_SetTimer */
406
407
408 /*****************************************************************************
409 ******************************************************************************
410
411         ThunderLAN Driver Primary Functions
412
413         These functions are more or less common to all Linux network drivers.
414
415 ******************************************************************************
416 *****************************************************************************/
417
418
419
420
421
422         /***************************************************************
423          *      tlan_remove_one
424          *
425          *      Returns:
426          *              Nothing
427          *      Parms:
428          *              None
429          *
430          *      Goes through the TLanDevices list and frees the device
431          *      structs and memory associated with each device (lists
432          *      and buffers).  It also ureserves the IO port regions
433          *      associated with this device.
434          *
435          **************************************************************/
436
437
438 static void __devexit tlan_remove_one( struct pci_dev *pdev)
439 {
440         struct net_device *dev = pci_get_drvdata( pdev );
441         TLanPrivateInfo *priv = netdev_priv(dev);
442
443         unregister_netdev( dev );
444
445         if ( priv->dmaStorage ) {
446                 pci_free_consistent(priv->pciDev,
447                                     priv->dmaSize, priv->dmaStorage,
448                                     priv->dmaStorageDMA );
449         }
450
451 #ifdef CONFIG_PCI
452         pci_release_regions(pdev);
453 #endif
454
455         free_netdev( dev );
456
457         pci_set_drvdata( pdev, NULL );
458 }
459
460 static struct pci_driver tlan_driver = {
461         .name           = "tlan",
462         .id_table       = tlan_pci_tbl,
463         .probe          = tlan_init_one,
464         .remove         = __devexit_p(tlan_remove_one),
465 };
466
467 static int __init tlan_probe(void)
468 {
469         int rc = -ENODEV;
470
471         printk(KERN_INFO "%s", tlan_banner);
472
473         TLAN_DBG(TLAN_DEBUG_PROBE, "Starting PCI Probe....\n");
474
475         /* Use new style PCI probing. Now the kernel will
476            do most of this for us */
477         rc = pci_register_driver(&tlan_driver);
478
479         if (rc != 0) {
480                 printk(KERN_ERR "TLAN: Could not register pci driver.\n");
481                 goto err_out_pci_free;
482         }
483
484         TLAN_DBG(TLAN_DEBUG_PROBE, "Starting EISA Probe....\n");
485         TLan_EisaProbe();
486
487         printk(KERN_INFO "TLAN: %d device%s installed, PCI: %d  EISA: %d\n",
488                  TLanDevicesInstalled, TLanDevicesInstalled == 1 ? "" : "s",
489                  tlan_have_pci, tlan_have_eisa);
490
491         if (TLanDevicesInstalled == 0) {
492                 rc = -ENODEV;
493                 goto  err_out_pci_unreg;
494         }
495         return 0;
496
497 err_out_pci_unreg:
498         pci_unregister_driver(&tlan_driver);
499 err_out_pci_free:
500         return rc;
501 }
502
503
504 static int __devinit tlan_init_one( struct pci_dev *pdev,
505                                     const struct pci_device_id *ent)
506 {
507         return TLan_probe1( pdev, -1, -1, 0, ent);
508 }
509
510
511 /*
512         ***************************************************************
513          *      tlan_probe1
514          *
515          *      Returns:
516          *              0 on success, error code on error
517          *      Parms:
518          *              none
519          *
520          *      The name is lower case to fit in with all the rest of
521          *      the netcard_probe names.  This function looks for
522          *      another TLan based adapter, setting it up with the
523          *      allocated device struct if one is found.
524          *      tlan_probe has been ported to the new net API and
525          *      now allocates its own device structure. This function
526          *      is also used by modules.
527          *
528          **************************************************************/
529
530 static int __devinit TLan_probe1(struct pci_dev *pdev,
531                                  long ioaddr, int irq, int rev,
532                                  const struct pci_device_id *ent )
533 {
534
535         struct net_device  *dev;
536         TLanPrivateInfo    *priv;
537         u16                device_id;
538         int                reg, rc = -ENODEV;
539
540 #ifdef CONFIG_PCI
541         if (pdev) {
542                 rc = pci_enable_device(pdev);
543                 if (rc)
544                         return rc;
545
546                 rc = pci_request_regions(pdev, TLanSignature);
547                 if (rc) {
548                         printk(KERN_ERR "TLAN: Could not reserve IO regions\n");
549                         goto err_out;
550                 }
551         }
552 #endif  /*  CONFIG_PCI  */
553
554         dev = alloc_etherdev(sizeof(TLanPrivateInfo));
555         if (dev == NULL) {
556                 printk(KERN_ERR "TLAN: Could not allocate memory for device.\n");
557                 rc = -ENOMEM;
558                 goto err_out_regions;
559         }
560         SET_NETDEV_DEV(dev, &pdev->dev);
561
562         priv = netdev_priv(dev);
563
564         priv->pciDev = pdev;
565         priv->dev = dev;
566
567         /* Is this a PCI device? */
568         if (pdev) {
569                 u32                pci_io_base = 0;
570
571                 priv->adapter = &board_info[ent->driver_data];
572
573                 rc = pci_set_dma_mask(pdev, DMA_BIT_MASK(32));
574                 if (rc) {
575                         printk(KERN_ERR "TLAN: No suitable PCI mapping available.\n");
576                         goto err_out_free_dev;
577                 }
578
579                 for ( reg= 0; reg <= 5; reg ++ ) {
580                         if (pci_resource_flags(pdev, reg) & IORESOURCE_IO) {
581                                 pci_io_base = pci_resource_start(pdev, reg);
582                                 TLAN_DBG( TLAN_DEBUG_GNRL, "IO mapping is available at %x.\n",
583                                                 pci_io_base);
584                                 break;
585                         }
586                 }
587                 if (!pci_io_base) {
588                         printk(KERN_ERR "TLAN: No IO mappings available\n");
589                         rc = -EIO;
590                         goto err_out_free_dev;
591                 }
592
593                 dev->base_addr = pci_io_base;
594                 dev->irq = pdev->irq;
595                 priv->adapterRev = pdev->revision;
596                 pci_set_master(pdev);
597                 pci_set_drvdata(pdev, dev);
598
599         } else  {     /* EISA card */
600                 /* This is a hack. We need to know which board structure
601                  * is suited for this adapter */
602                 device_id = inw(ioaddr + EISA_ID2);
603                 priv->is_eisa = 1;
604                 if (device_id == 0x20F1) {
605                         priv->adapter = &board_info[13];        /* NetFlex-3/E */
606                         priv->adapterRev = 23;                  /* TLAN 2.3 */
607                 } else {
608                         priv->adapter = &board_info[14];
609                         priv->adapterRev = 10;                  /* TLAN 1.0 */
610                 }
611                 dev->base_addr = ioaddr;
612                 dev->irq = irq;
613         }
614
615         /* Kernel parameters */
616         if (dev->mem_start) {
617                 priv->aui    = dev->mem_start & 0x01;
618                 priv->duplex = ((dev->mem_start & 0x06) == 0x06) ? 0
619                         : (dev->mem_start & 0x06) >> 1;
620                 priv->speed  = ((dev->mem_start & 0x18) == 0x18) ? 0
621                         : (dev->mem_start & 0x18) >> 3;
622
623                 if (priv->speed == 0x1) {
624                         priv->speed = TLAN_SPEED_10;
625                 } else if (priv->speed == 0x2) {
626                         priv->speed = TLAN_SPEED_100;
627                 }
628                 debug = priv->debug = dev->mem_end;
629         } else {
630                 priv->aui    = aui[boards_found];
631                 priv->speed  = speed[boards_found];
632                 priv->duplex = duplex[boards_found];
633                 priv->debug = debug;
634         }
635
636         /* This will be used when we get an adapter error from
637          * within our irq handler */
638         INIT_WORK(&priv->tlan_tqueue, TLan_tx_timeout_work);
639
640         spin_lock_init(&priv->lock);
641
642         rc = TLan_Init(dev);
643         if (rc) {
644                 printk(KERN_ERR "TLAN: Could not set up device.\n");
645                 goto err_out_free_dev;
646         }
647
648         rc = register_netdev(dev);
649         if (rc) {
650                 printk(KERN_ERR "TLAN: Could not register device.\n");
651                 goto err_out_uninit;
652         }
653
654
655         TLanDevicesInstalled++;
656         boards_found++;
657
658         /* pdev is NULL if this is an EISA device */
659         if (pdev)
660                 tlan_have_pci++;
661         else {
662                 priv->nextDevice = TLan_Eisa_Devices;
663                 TLan_Eisa_Devices = dev;
664                 tlan_have_eisa++;
665         }
666
667         printk(KERN_INFO "TLAN: %s irq=%2d, io=%04x, %s, Rev. %d\n",
668                         dev->name,
669                         (int) dev->irq,
670                         (int) dev->base_addr,
671                         priv->adapter->deviceLabel,
672                         priv->adapterRev);
673         return 0;
674
675 err_out_uninit:
676         pci_free_consistent(priv->pciDev, priv->dmaSize, priv->dmaStorage,
677                             priv->dmaStorageDMA );
678 err_out_free_dev:
679         free_netdev(dev);
680 err_out_regions:
681 #ifdef CONFIG_PCI
682         if (pdev)
683                 pci_release_regions(pdev);
684 #endif
685 err_out:
686         if (pdev)
687                 pci_disable_device(pdev);
688         return rc;
689 }
690
691
692 static void TLan_Eisa_Cleanup(void)
693 {
694         struct net_device *dev;
695         TLanPrivateInfo *priv;
696
697         while( tlan_have_eisa ) {
698                 dev = TLan_Eisa_Devices;
699                 priv = netdev_priv(dev);
700                 if (priv->dmaStorage) {
701                         pci_free_consistent(priv->pciDev, priv->dmaSize,
702                                             priv->dmaStorage, priv->dmaStorageDMA );
703                 }
704                 release_region( dev->base_addr, 0x10);
705                 unregister_netdev( dev );
706                 TLan_Eisa_Devices = priv->nextDevice;
707                 free_netdev( dev );
708                 tlan_have_eisa--;
709         }
710 }
711
712
713 static void __exit tlan_exit(void)
714 {
715         pci_unregister_driver(&tlan_driver);
716
717         if (tlan_have_eisa)
718                 TLan_Eisa_Cleanup();
719
720 }
721
722
723 /* Module loading/unloading */
724 module_init(tlan_probe);
725 module_exit(tlan_exit);
726
727
728
729         /**************************************************************
730          *      TLan_EisaProbe
731          *
732          *      Returns: 0 on success, 1 otherwise
733          *
734          *      Parms:   None
735          *
736          *
737          *      This functions probes for EISA devices and calls
738          *      TLan_probe1 when one is found.
739          *
740          *************************************************************/
741
742 static void  __init TLan_EisaProbe (void)
743 {
744         long    ioaddr;
745         int     rc = -ENODEV;
746         int     irq;
747         u16     device_id;
748
749         if (!EISA_bus) {
750                 TLAN_DBG(TLAN_DEBUG_PROBE, "No EISA bus present\n");
751                 return;
752         }
753
754         /* Loop through all slots of the EISA bus */
755         for (ioaddr = 0x1000; ioaddr < 0x9000; ioaddr += 0x1000) {
756
757         TLAN_DBG(TLAN_DEBUG_PROBE,"EISA_ID 0x%4x: 0x%4x\n",
758                  (int) ioaddr + 0xC80, inw(ioaddr + EISA_ID));
759         TLAN_DBG(TLAN_DEBUG_PROBE,"EISA_ID 0x%4x: 0x%4x\n",
760                  (int) ioaddr + 0xC82, inw(ioaddr + EISA_ID2));
761
762
763                 TLAN_DBG(TLAN_DEBUG_PROBE, "Probing for EISA adapter at IO: 0x%4x : ",
764                                         (int) ioaddr);
765                 if (request_region(ioaddr, 0x10, TLanSignature) == NULL)
766                         goto out;
767
768                 if (inw(ioaddr + EISA_ID) != 0x110E) {
769                         release_region(ioaddr, 0x10);
770                         goto out;
771                 }
772
773                 device_id = inw(ioaddr + EISA_ID2);
774                 if (device_id !=  0x20F1 && device_id != 0x40F1) {
775                         release_region (ioaddr, 0x10);
776                         goto out;
777                 }
778
779                 if (inb(ioaddr + EISA_CR) != 0x1) {     /* Check if adapter is enabled */
780                         release_region (ioaddr, 0x10);
781                         goto out2;
782                 }
783
784                 if (debug == 0x10)
785                         printk("Found one\n");
786
787
788                 /* Get irq from board */
789                 switch (inb(ioaddr + 0xCC0)) {
790                         case(0x10):
791                                 irq=5;
792                                 break;
793                         case(0x20):
794                                 irq=9;
795                                 break;
796                         case(0x40):
797                                 irq=10;
798                                 break;
799                         case(0x80):
800                                 irq=11;
801                                 break;
802                         default:
803                                 goto out;
804                 }
805
806
807                 /* Setup the newly found eisa adapter */
808                 rc = TLan_probe1( NULL, ioaddr, irq,
809                                         12, NULL);
810                 continue;
811
812                 out:
813                         if (debug == 0x10)
814                                 printk("None found\n");
815                         continue;
816
817                 out2:   if (debug == 0x10)
818                                 printk("Card found but it is not enabled, skipping\n");
819                         continue;
820
821         }
822
823 } /* TLan_EisaProbe */
824
825 #ifdef CONFIG_NET_POLL_CONTROLLER
826 static void TLan_Poll(struct net_device *dev)
827 {
828         disable_irq(dev->irq);
829         TLan_HandleInterrupt(dev->irq, dev);
830         enable_irq(dev->irq);
831 }
832 #endif
833
834 static const struct net_device_ops TLan_netdev_ops = {
835         .ndo_open               = TLan_Open,
836         .ndo_stop               = TLan_Close,
837         .ndo_start_xmit         = TLan_StartTx,
838         .ndo_tx_timeout         = TLan_tx_timeout,
839         .ndo_get_stats          = TLan_GetStats,
840         .ndo_set_multicast_list = TLan_SetMulticastList,
841         .ndo_do_ioctl           = TLan_ioctl,
842         .ndo_change_mtu         = eth_change_mtu,
843         .ndo_set_mac_address    = eth_mac_addr,
844         .ndo_validate_addr      = eth_validate_addr,
845 #ifdef CONFIG_NET_POLL_CONTROLLER
846         .ndo_poll_controller     = TLan_Poll,
847 #endif
848 };
849
850
851
852         /***************************************************************
853          *      TLan_Init
854          *
855          *      Returns:
856          *              0 on success, error code otherwise.
857          *      Parms:
858          *              dev     The structure of the device to be
859          *                      init'ed.
860          *
861          *      This function completes the initialization of the
862          *      device structure and driver.  It reserves the IO
863          *      addresses, allocates memory for the lists and bounce
864          *      buffers, retrieves the MAC address from the eeprom
865          *      and assignes the device's methods.
866          *
867          **************************************************************/
868
869 static int TLan_Init( struct net_device *dev )
870 {
871         int             dma_size;
872         int             err;
873         int             i;
874         TLanPrivateInfo *priv;
875
876         priv = netdev_priv(dev);
877
878         dma_size = ( TLAN_NUM_RX_LISTS + TLAN_NUM_TX_LISTS )
879                 * ( sizeof(TLanList) );
880         priv->dmaStorage = pci_alloc_consistent(priv->pciDev,
881                                                 dma_size, &priv->dmaStorageDMA);
882         priv->dmaSize = dma_size;
883
884         if ( priv->dmaStorage == NULL ) {
885                 printk(KERN_ERR "TLAN:  Could not allocate lists and buffers for %s.\n",
886                         dev->name );
887                 return -ENOMEM;
888         }
889         memset( priv->dmaStorage, 0, dma_size );
890         priv->rxList = (TLanList *) ALIGN((unsigned long)priv->dmaStorage, 8);
891         priv->rxListDMA = ALIGN(priv->dmaStorageDMA, 8);
892         priv->txList = priv->rxList + TLAN_NUM_RX_LISTS;
893         priv->txListDMA = priv->rxListDMA + sizeof(TLanList) * TLAN_NUM_RX_LISTS;
894
895         err = 0;
896         for ( i = 0;  i < 6 ; i++ )
897                 err |= TLan_EeReadByte( dev,
898                                         (u8) priv->adapter->addrOfs + i,
899                                         (u8 *) &dev->dev_addr[i] );
900         if ( err ) {
901                 printk(KERN_ERR "TLAN: %s: Error reading MAC from eeprom: %d\n",
902                         dev->name,
903                         err );
904         }
905         dev->addr_len = 6;
906
907         netif_carrier_off(dev);
908
909         /* Device methods */
910         dev->netdev_ops = &TLan_netdev_ops;
911         dev->watchdog_timeo = TX_TIMEOUT;
912
913         return 0;
914
915 } /* TLan_Init */
916
917
918
919
920         /***************************************************************
921          *      TLan_Open
922          *
923          *      Returns:
924          *              0 on success, error code otherwise.
925          *      Parms:
926          *              dev     Structure of device to be opened.
927          *
928          *      This routine puts the driver and TLAN adapter in a
929          *      state where it is ready to send and receive packets.
930          *      It allocates the IRQ, resets and brings the adapter
931          *      out of reset, and allows interrupts.  It also delays
932          *      the startup for autonegotiation or sends a Rx GO
933          *      command to the adapter, as appropriate.
934          *
935          **************************************************************/
936
937 static int TLan_Open( struct net_device *dev )
938 {
939         TLanPrivateInfo *priv = netdev_priv(dev);
940         int             err;
941
942         priv->tlanRev = TLan_DioRead8( dev->base_addr, TLAN_DEF_REVISION );
943         err = request_irq( dev->irq, TLan_HandleInterrupt, IRQF_SHARED,
944                            dev->name, dev );
945
946         if ( err ) {
947                 pr_err("TLAN:  Cannot open %s because IRQ %d is already in use.\n",
948                        dev->name, dev->irq );
949                 return err;
950         }
951
952         init_timer(&priv->timer);
953         netif_start_queue(dev);
954
955         /* NOTE: It might not be necessary to read the stats before a
956                          reset if you don't care what the values are.
957         */
958         TLan_ResetLists( dev );
959         TLan_ReadAndClearStats( dev, TLAN_IGNORE );
960         TLan_ResetAdapter( dev );
961
962         TLAN_DBG( TLAN_DEBUG_GNRL, "%s: Opened.  TLAN Chip Rev: %x\n",
963                   dev->name, priv->tlanRev );
964
965         return 0;
966
967 } /* TLan_Open */
968
969
970
971         /**************************************************************
972          *      TLan_ioctl
973          *
974          *      Returns:
975          *              0 on success, error code otherwise
976          *      Params:
977          *              dev     structure of device to receive ioctl.
978          *
979          *              rq      ifreq structure to hold userspace data.
980          *
981          *              cmd     ioctl command.
982          *
983          *
984          *************************************************************/
985
986 static int TLan_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
987 {
988         TLanPrivateInfo *priv = netdev_priv(dev);
989         struct mii_ioctl_data *data = if_mii(rq);
990         u32 phy   = priv->phy[priv->phyNum];
991
992         if (!priv->phyOnline)
993                 return -EAGAIN;
994
995         switch(cmd) {
996         case SIOCGMIIPHY:               /* Get address of MII PHY in use. */
997                         data->phy_id = phy;
998
999
1000         case SIOCGMIIREG:               /* Read MII PHY register. */
1001                         TLan_MiiReadReg(dev, data->phy_id & 0x1f,
1002                                         data->reg_num & 0x1f, &data->val_out);
1003                         return 0;
1004
1005
1006         case SIOCSMIIREG:               /* Write MII PHY register. */
1007                         TLan_MiiWriteReg(dev, data->phy_id & 0x1f,
1008                                          data->reg_num & 0x1f, data->val_in);
1009                         return 0;
1010                 default:
1011                         return -EOPNOTSUPP;
1012         }
1013 } /* tlan_ioctl */
1014
1015
1016         /***************************************************************
1017          *      TLan_tx_timeout
1018          *
1019          *      Returns: nothing
1020          *
1021          *      Params:
1022          *              dev     structure of device which timed out
1023          *                      during transmit.
1024          *
1025          **************************************************************/
1026
1027 static void TLan_tx_timeout(struct net_device *dev)
1028 {
1029
1030         TLAN_DBG( TLAN_DEBUG_GNRL, "%s: Transmit timed out.\n", dev->name);
1031
1032         /* Ok so we timed out, lets see what we can do about it...*/
1033         TLan_FreeLists( dev );
1034         TLan_ResetLists( dev );
1035         TLan_ReadAndClearStats( dev, TLAN_IGNORE );
1036         TLan_ResetAdapter( dev );
1037         dev->trans_start = jiffies;
1038         netif_wake_queue( dev );
1039
1040 }
1041
1042
1043         /***************************************************************
1044          *      TLan_tx_timeout_work
1045          *
1046          *      Returns: nothing
1047          *
1048          *      Params:
1049          *              work    work item of device which timed out
1050          *
1051          **************************************************************/
1052
1053 static void TLan_tx_timeout_work(struct work_struct *work)
1054 {
1055         TLanPrivateInfo *priv =
1056                 container_of(work, TLanPrivateInfo, tlan_tqueue);
1057
1058         TLan_tx_timeout(priv->dev);
1059 }
1060
1061
1062
1063         /***************************************************************
1064          *      TLan_StartTx
1065          *
1066          *      Returns:
1067          *              0 on success, non-zero on failure.
1068          *      Parms:
1069          *              skb     A pointer to the sk_buff containing the
1070          *                      frame to be sent.
1071          *              dev     The device to send the data on.
1072          *
1073          *      This function adds a frame to the Tx list to be sent
1074          *      ASAP.  First it verifies that the adapter is ready and
1075          *      there is room in the queue.  Then it sets up the next
1076          *      available list, copies the frame to the corresponding
1077          *      buffer.  If the adapter Tx channel is idle, it gives
1078          *      the adapter a Tx Go command on the list, otherwise it
1079          *      sets the forward address of the previous list to point
1080          *      to this one.  Then it frees the sk_buff.
1081          *
1082          **************************************************************/
1083
1084 static netdev_tx_t TLan_StartTx( struct sk_buff *skb, struct net_device *dev )
1085 {
1086         TLanPrivateInfo *priv = netdev_priv(dev);
1087         dma_addr_t      tail_list_phys;
1088         TLanList        *tail_list;
1089         unsigned long   flags;
1090         unsigned int    txlen;
1091
1092         if ( ! priv->phyOnline ) {
1093                 TLAN_DBG( TLAN_DEBUG_TX, "TRANSMIT:  %s PHY is not ready\n",
1094                           dev->name );
1095                 dev_kfree_skb_any(skb);
1096                 return NETDEV_TX_OK;
1097         }
1098
1099         if (skb_padto(skb, TLAN_MIN_FRAME_SIZE))
1100                 return NETDEV_TX_OK;
1101         txlen = max(skb->len, (unsigned int)TLAN_MIN_FRAME_SIZE);
1102
1103         tail_list = priv->txList + priv->txTail;
1104         tail_list_phys = priv->txListDMA + sizeof(TLanList) * priv->txTail;
1105
1106         if ( tail_list->cStat != TLAN_CSTAT_UNUSED ) {
1107                 TLAN_DBG( TLAN_DEBUG_TX,
1108                           "TRANSMIT:  %s is busy (Head=%d Tail=%d)\n",
1109                           dev->name, priv->txHead, priv->txTail );
1110                 netif_stop_queue(dev);
1111                 priv->txBusyCount++;
1112                 return NETDEV_TX_BUSY;
1113         }
1114
1115         tail_list->forward = 0;
1116
1117         tail_list->buffer[0].address = pci_map_single(priv->pciDev,
1118                                                       skb->data, txlen,
1119                                                       PCI_DMA_TODEVICE);
1120         TLan_StoreSKB(tail_list, skb);
1121
1122         tail_list->frameSize = (u16) txlen;
1123         tail_list->buffer[0].count = TLAN_LAST_BUFFER | (u32) txlen;
1124         tail_list->buffer[1].count = 0;
1125         tail_list->buffer[1].address = 0;
1126
1127         spin_lock_irqsave(&priv->lock, flags);
1128         tail_list->cStat = TLAN_CSTAT_READY;
1129         if ( ! priv->txInProgress ) {
1130                 priv->txInProgress = 1;
1131                 TLAN_DBG( TLAN_DEBUG_TX,
1132                           "TRANSMIT:  Starting TX on buffer %d\n", priv->txTail );
1133                 outl( tail_list_phys, dev->base_addr + TLAN_CH_PARM );
1134                 outl( TLAN_HC_GO, dev->base_addr + TLAN_HOST_CMD );
1135         } else {
1136                 TLAN_DBG( TLAN_DEBUG_TX, "TRANSMIT:  Adding buffer %d to TX channel\n",
1137                           priv->txTail );
1138                 if ( priv->txTail == 0 ) {
1139                         ( priv->txList + ( TLAN_NUM_TX_LISTS - 1 ) )->forward
1140                                 = tail_list_phys;
1141                 } else {
1142                         ( priv->txList + ( priv->txTail - 1 ) )->forward
1143                                 = tail_list_phys;
1144                 }
1145         }
1146         spin_unlock_irqrestore(&priv->lock, flags);
1147
1148         CIRC_INC( priv->txTail, TLAN_NUM_TX_LISTS );
1149
1150         dev->trans_start = jiffies;
1151         return NETDEV_TX_OK;
1152
1153 } /* TLan_StartTx */
1154
1155
1156
1157
1158         /***************************************************************
1159          *      TLan_HandleInterrupt
1160          *
1161          *      Returns:
1162          *              Nothing
1163          *      Parms:
1164          *              irq     The line on which the interrupt
1165          *                      occurred.
1166          *              dev_id  A pointer to the device assigned to
1167          *                      this irq line.
1168          *
1169          *      This function handles an interrupt generated by its
1170          *      assigned TLAN adapter.  The function deactivates
1171          *      interrupts on its adapter, records the type of
1172          *      interrupt, executes the appropriate subhandler, and
1173          *      acknowdges the interrupt to the adapter (thus
1174          *      re-enabling adapter interrupts.
1175          *
1176          **************************************************************/
1177
1178 static irqreturn_t TLan_HandleInterrupt(int irq, void *dev_id)
1179 {
1180         struct net_device       *dev = dev_id;
1181         TLanPrivateInfo *priv = netdev_priv(dev);
1182         u16             host_int;
1183         u16             type;
1184
1185         spin_lock(&priv->lock);
1186
1187         host_int = inw( dev->base_addr + TLAN_HOST_INT );
1188         type = ( host_int & TLAN_HI_IT_MASK ) >> 2;
1189         if ( type ) {
1190                 u32     ack;
1191                 u32     host_cmd;
1192
1193                 outw( host_int, dev->base_addr + TLAN_HOST_INT );
1194                 ack = TLanIntVector[type]( dev, host_int );
1195
1196                 if ( ack ) {
1197                         host_cmd = TLAN_HC_ACK | ack | ( type << 18 );
1198                         outl( host_cmd, dev->base_addr + TLAN_HOST_CMD );
1199                 }
1200         }
1201
1202         spin_unlock(&priv->lock);
1203
1204         return IRQ_RETVAL(type);
1205 } /* TLan_HandleInterrupts */
1206
1207
1208
1209
1210         /***************************************************************
1211          *      TLan_Close
1212          *
1213          *      Returns:
1214          *              An error code.
1215          *      Parms:
1216          *              dev     The device structure of the device to
1217          *                      close.
1218          *
1219          *      This function shuts down the adapter.  It records any
1220          *      stats, puts the adapter into reset state, deactivates
1221          *      its time as needed, and frees the irq it is using.
1222          *
1223          **************************************************************/
1224
1225 static int TLan_Close(struct net_device *dev)
1226 {
1227         TLanPrivateInfo *priv = netdev_priv(dev);
1228
1229         netif_stop_queue(dev);
1230         priv->neg_be_verbose = 0;
1231
1232         TLan_ReadAndClearStats( dev, TLAN_RECORD );
1233         outl( TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD );
1234         if ( priv->timer.function != NULL ) {
1235                 del_timer_sync( &priv->timer );
1236                 priv->timer.function = NULL;
1237         }
1238
1239         free_irq( dev->irq, dev );
1240         TLan_FreeLists( dev );
1241         TLAN_DBG( TLAN_DEBUG_GNRL, "Device %s closed.\n", dev->name );
1242
1243         return 0;
1244
1245 } /* TLan_Close */
1246
1247
1248
1249
1250         /***************************************************************
1251          *      TLan_GetStats
1252          *
1253          *      Returns:
1254          *              A pointer to the device's statistics structure.
1255          *      Parms:
1256          *              dev     The device structure to return the
1257          *                      stats for.
1258          *
1259          *      This function updates the devices statistics by reading
1260          *      the TLAN chip's onboard registers.  Then it returns the
1261          *      address of the statistics structure.
1262          *
1263          **************************************************************/
1264
1265 static struct net_device_stats *TLan_GetStats( struct net_device *dev )
1266 {
1267         TLanPrivateInfo *priv = netdev_priv(dev);
1268         int i;
1269
1270         /* Should only read stats if open ? */
1271         TLan_ReadAndClearStats( dev, TLAN_RECORD );
1272
1273         TLAN_DBG( TLAN_DEBUG_RX, "RECEIVE:  %s EOC count = %d\n", dev->name,
1274                   priv->rxEocCount );
1275         TLAN_DBG( TLAN_DEBUG_TX, "TRANSMIT:  %s Busy count = %d\n", dev->name,
1276                   priv->txBusyCount );
1277         if ( debug & TLAN_DEBUG_GNRL ) {
1278                 TLan_PrintDio( dev->base_addr );
1279                 TLan_PhyPrint( dev );
1280         }
1281         if ( debug & TLAN_DEBUG_LIST ) {
1282                 for ( i = 0; i < TLAN_NUM_RX_LISTS; i++ )
1283                         TLan_PrintList( priv->rxList + i, "RX", i );
1284                 for ( i = 0; i < TLAN_NUM_TX_LISTS; i++ )
1285                         TLan_PrintList( priv->txList + i, "TX", i );
1286         }
1287
1288         return &dev->stats;
1289
1290 } /* TLan_GetStats */
1291
1292
1293
1294
1295         /***************************************************************
1296          *      TLan_SetMulticastList
1297          *
1298          *      Returns:
1299          *              Nothing
1300          *      Parms:
1301          *              dev     The device structure to set the
1302          *                      multicast list for.
1303          *
1304          *      This function sets the TLAN adaptor to various receive
1305          *      modes.  If the IFF_PROMISC flag is set, promiscuous
1306          *      mode is acitviated.  Otherwise, promiscuous mode is
1307          *      turned off.  If the IFF_ALLMULTI flag is set, then
1308          *      the hash table is set to receive all group addresses.
1309          *      Otherwise, the first three multicast addresses are
1310          *      stored in AREG_1-3, and the rest are selected via the
1311          *      hash table, as necessary.
1312          *
1313          **************************************************************/
1314
1315 static void TLan_SetMulticastList( struct net_device *dev )
1316 {
1317         struct netdev_hw_addr *ha;
1318         u32                     hash1 = 0;
1319         u32                     hash2 = 0;
1320         int                     i;
1321         u32                     offset;
1322         u8                      tmp;
1323
1324         if ( dev->flags & IFF_PROMISC ) {
1325                 tmp = TLan_DioRead8( dev->base_addr, TLAN_NET_CMD );
1326                 TLan_DioWrite8( dev->base_addr,
1327                                 TLAN_NET_CMD, tmp | TLAN_NET_CMD_CAF );
1328         } else {
1329                 tmp = TLan_DioRead8( dev->base_addr, TLAN_NET_CMD );
1330                 TLan_DioWrite8( dev->base_addr,
1331                                 TLAN_NET_CMD, tmp & ~TLAN_NET_CMD_CAF );
1332                 if ( dev->flags & IFF_ALLMULTI ) {
1333                         for ( i = 0; i < 3; i++ )
1334                                 TLan_SetMac( dev, i + 1, NULL );
1335                         TLan_DioWrite32( dev->base_addr, TLAN_HASH_1, 0xFFFFFFFF );
1336                         TLan_DioWrite32( dev->base_addr, TLAN_HASH_2, 0xFFFFFFFF );
1337                 } else {
1338                         i = 0;
1339                         netdev_for_each_mc_addr(ha, dev) {
1340                                 if ( i < 3 ) {
1341                                         TLan_SetMac( dev, i + 1,
1342                                                      (char *) &ha->addr);
1343                                 } else {
1344                                         offset = TLan_HashFunc((u8 *)&ha->addr);
1345                                         if ( offset < 32 )
1346                                                 hash1 |= ( 1 << offset );
1347                                         else
1348                                                 hash2 |= ( 1 << ( offset - 32 ) );
1349                                 }
1350                                 i++;
1351                         }
1352                         for ( ; i < 3; i++ )
1353                                 TLan_SetMac( dev, i + 1, NULL );
1354                         TLan_DioWrite32( dev->base_addr, TLAN_HASH_1, hash1 );
1355                         TLan_DioWrite32( dev->base_addr, TLAN_HASH_2, hash2 );
1356                 }
1357         }
1358
1359 } /* TLan_SetMulticastList */
1360
1361
1362
1363 /*****************************************************************************
1364 ******************************************************************************
1365
1366         ThunderLAN Driver Interrupt Vectors and Table
1367
1368         Please see Chap. 4, "Interrupt Handling" of the "ThunderLAN
1369         Programmer's Guide" for more informations on handling interrupts
1370         generated by TLAN based adapters.
1371
1372 ******************************************************************************
1373 *****************************************************************************/
1374
1375
1376
1377
1378         /***************************************************************
1379          *      TLan_HandleTxEOF
1380          *
1381          *      Returns:
1382          *              1
1383          *      Parms:
1384          *              dev             Device assigned the IRQ that was
1385          *                              raised.
1386          *              host_int        The contents of the HOST_INT
1387          *                              port.
1388          *
1389          *      This function handles Tx EOF interrupts which are raised
1390          *      by the adapter when it has completed sending the
1391          *      contents of a buffer.  If detemines which list/buffer
1392          *      was completed and resets it.  If the buffer was the last
1393          *      in the channel (EOC), then the function checks to see if
1394          *      another buffer is ready to send, and if so, sends a Tx
1395          *      Go command.  Finally, the driver activates/continues the
1396          *      activity LED.
1397          *
1398          **************************************************************/
1399
1400 static u32 TLan_HandleTxEOF( struct net_device *dev, u16 host_int )
1401 {
1402         TLanPrivateInfo *priv = netdev_priv(dev);
1403         int             eoc = 0;
1404         TLanList        *head_list;
1405         dma_addr_t      head_list_phys;
1406         u32             ack = 0;
1407         u16             tmpCStat;
1408
1409         TLAN_DBG( TLAN_DEBUG_TX, "TRANSMIT:  Handling TX EOF (Head=%d Tail=%d)\n",
1410                   priv->txHead, priv->txTail );
1411         head_list = priv->txList + priv->txHead;
1412
1413         while (((tmpCStat = head_list->cStat ) & TLAN_CSTAT_FRM_CMP) && (ack < 255)) {
1414                 struct sk_buff *skb = TLan_GetSKB(head_list);
1415
1416                 ack++;
1417                 pci_unmap_single(priv->pciDev, head_list->buffer[0].address,
1418                                  max(skb->len,
1419                                      (unsigned int)TLAN_MIN_FRAME_SIZE),
1420                                  PCI_DMA_TODEVICE);
1421                 dev_kfree_skb_any(skb);
1422                 head_list->buffer[8].address = 0;
1423                 head_list->buffer[9].address = 0;
1424
1425                 if ( tmpCStat & TLAN_CSTAT_EOC )
1426                         eoc = 1;
1427
1428                 dev->stats.tx_bytes += head_list->frameSize;
1429
1430                 head_list->cStat = TLAN_CSTAT_UNUSED;
1431                 netif_start_queue(dev);
1432                 CIRC_INC( priv->txHead, TLAN_NUM_TX_LISTS );
1433                 head_list = priv->txList + priv->txHead;
1434         }
1435
1436         if (!ack)
1437                 printk(KERN_INFO "TLAN: Received interrupt for uncompleted TX frame.\n");
1438
1439         if ( eoc ) {
1440                 TLAN_DBG( TLAN_DEBUG_TX,
1441                           "TRANSMIT:  Handling TX EOC (Head=%d Tail=%d)\n",
1442                           priv->txHead, priv->txTail );
1443                 head_list = priv->txList + priv->txHead;
1444                 head_list_phys = priv->txListDMA + sizeof(TLanList) * priv->txHead;
1445                 if ( ( head_list->cStat & TLAN_CSTAT_READY ) == TLAN_CSTAT_READY ) {
1446                         outl(head_list_phys, dev->base_addr + TLAN_CH_PARM );
1447                         ack |= TLAN_HC_GO;
1448                 } else {
1449                         priv->txInProgress = 0;
1450                 }
1451         }
1452
1453         if ( priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED ) {
1454                 TLan_DioWrite8( dev->base_addr,
1455                                 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT );
1456                 if ( priv->timer.function == NULL ) {
1457                          priv->timer.function = &TLan_Timer;
1458                          priv->timer.data = (unsigned long) dev;
1459                          priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1460                          priv->timerSetAt = jiffies;
1461                          priv->timerType = TLAN_TIMER_ACTIVITY;
1462                          add_timer(&priv->timer);
1463                 } else if ( priv->timerType == TLAN_TIMER_ACTIVITY ) {
1464                         priv->timerSetAt = jiffies;
1465                 }
1466         }
1467
1468         return ack;
1469
1470 } /* TLan_HandleTxEOF */
1471
1472
1473
1474
1475         /***************************************************************
1476          *      TLan_HandleStatOverflow
1477          *
1478          *      Returns:
1479          *              1
1480          *      Parms:
1481          *              dev             Device assigned the IRQ that was
1482          *                              raised.
1483          *              host_int        The contents of the HOST_INT
1484          *                              port.
1485          *
1486          *      This function handles the Statistics Overflow interrupt
1487          *      which means that one or more of the TLAN statistics
1488          *      registers has reached 1/2 capacity and needs to be read.
1489          *
1490          **************************************************************/
1491
1492 static u32 TLan_HandleStatOverflow( struct net_device *dev, u16 host_int )
1493 {
1494         TLan_ReadAndClearStats( dev, TLAN_RECORD );
1495
1496         return 1;
1497
1498 } /* TLan_HandleStatOverflow */
1499
1500
1501
1502
1503         /***************************************************************
1504          *      TLan_HandleRxEOF
1505          *
1506          *      Returns:
1507          *              1
1508          *      Parms:
1509          *              dev             Device assigned the IRQ that was
1510          *                              raised.
1511          *              host_int        The contents of the HOST_INT
1512          *                              port.
1513          *
1514          *      This function handles the Rx EOF interrupt which
1515          *      indicates a frame has been received by the adapter from
1516          *      the net and the frame has been transferred to memory.
1517          *      The function determines the bounce buffer the frame has
1518          *      been loaded into, creates a new sk_buff big enough to
1519          *      hold the frame, and sends it to protocol stack.  It
1520          *      then resets the used buffer and appends it to the end
1521          *      of the list.  If the frame was the last in the Rx
1522          *      channel (EOC), the function restarts the receive channel
1523          *      by sending an Rx Go command to the adapter.  Then it
1524          *      activates/continues the activity LED.
1525          *
1526          **************************************************************/
1527
1528 static u32 TLan_HandleRxEOF( struct net_device *dev, u16 host_int )
1529 {
1530         TLanPrivateInfo *priv = netdev_priv(dev);
1531         u32             ack = 0;
1532         int             eoc = 0;
1533         TLanList        *head_list;
1534         struct sk_buff  *skb;
1535         TLanList        *tail_list;
1536         u16             tmpCStat;
1537         dma_addr_t      head_list_phys;
1538
1539         TLAN_DBG( TLAN_DEBUG_RX, "RECEIVE:  Handling RX EOF (Head=%d Tail=%d)\n",
1540                   priv->rxHead, priv->rxTail );
1541         head_list = priv->rxList + priv->rxHead;
1542         head_list_phys = priv->rxListDMA + sizeof(TLanList) * priv->rxHead;
1543
1544         while (((tmpCStat = head_list->cStat) & TLAN_CSTAT_FRM_CMP) && (ack < 255)) {
1545                 dma_addr_t frameDma = head_list->buffer[0].address;
1546                 u32 frameSize = head_list->frameSize;
1547                 struct sk_buff *new_skb;
1548
1549                 ack++;
1550                 if (tmpCStat & TLAN_CSTAT_EOC)
1551                         eoc = 1;
1552
1553                 new_skb = netdev_alloc_skb_ip_align(dev,
1554                                                     TLAN_MAX_FRAME_SIZE + 5);
1555                 if ( !new_skb )
1556                         goto drop_and_reuse;
1557
1558                 skb = TLan_GetSKB(head_list);
1559                 pci_unmap_single(priv->pciDev, frameDma,
1560                                  TLAN_MAX_FRAME_SIZE, PCI_DMA_FROMDEVICE);
1561                 skb_put( skb, frameSize );
1562
1563                 dev->stats.rx_bytes += frameSize;
1564
1565                 skb->protocol = eth_type_trans( skb, dev );
1566                 netif_rx( skb );
1567
1568                 head_list->buffer[0].address = pci_map_single(priv->pciDev,
1569                                                               new_skb->data,
1570                                                               TLAN_MAX_FRAME_SIZE,
1571                                                               PCI_DMA_FROMDEVICE);
1572
1573                 TLan_StoreSKB(head_list, new_skb);
1574 drop_and_reuse:
1575                 head_list->forward = 0;
1576                 head_list->cStat = 0;
1577                 tail_list = priv->rxList + priv->rxTail;
1578                 tail_list->forward = head_list_phys;
1579
1580                 CIRC_INC( priv->rxHead, TLAN_NUM_RX_LISTS );
1581                 CIRC_INC( priv->rxTail, TLAN_NUM_RX_LISTS );
1582                 head_list = priv->rxList + priv->rxHead;
1583                 head_list_phys = priv->rxListDMA + sizeof(TLanList) * priv->rxHead;
1584         }
1585
1586         if (!ack)
1587                 printk(KERN_INFO "TLAN: Received interrupt for uncompleted RX frame.\n");
1588
1589
1590         if ( eoc ) {
1591                 TLAN_DBG( TLAN_DEBUG_RX,
1592                           "RECEIVE:  Handling RX EOC (Head=%d Tail=%d)\n",
1593                           priv->rxHead, priv->rxTail );
1594                 head_list = priv->rxList + priv->rxHead;
1595                 head_list_phys = priv->rxListDMA + sizeof(TLanList) * priv->rxHead;
1596                 outl(head_list_phys, dev->base_addr + TLAN_CH_PARM );
1597                 ack |= TLAN_HC_GO | TLAN_HC_RT;
1598                 priv->rxEocCount++;
1599         }
1600
1601         if ( priv->adapter->flags & TLAN_ADAPTER_ACTIVITY_LED ) {
1602                 TLan_DioWrite8( dev->base_addr,
1603                                 TLAN_LED_REG, TLAN_LED_LINK | TLAN_LED_ACT );
1604                 if ( priv->timer.function == NULL )  {
1605                         priv->timer.function = &TLan_Timer;
1606                         priv->timer.data = (unsigned long) dev;
1607                         priv->timer.expires = jiffies + TLAN_TIMER_ACT_DELAY;
1608                         priv->timerSetAt = jiffies;
1609                         priv->timerType = TLAN_TIMER_ACTIVITY;
1610                         add_timer(&priv->timer);
1611                 } else if ( priv->timerType == TLAN_TIMER_ACTIVITY ) {
1612                         priv->timerSetAt = jiffies;
1613                 }
1614         }
1615
1616         return ack;
1617
1618 } /* TLan_HandleRxEOF */
1619
1620
1621
1622
1623         /***************************************************************
1624          *      TLan_HandleDummy
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 function handles the Dummy interrupt, which is
1635          *      raised whenever a test interrupt is generated by setting
1636          *      the Req_Int bit of HOST_CMD to 1.
1637          *
1638          **************************************************************/
1639
1640 static u32 TLan_HandleDummy( struct net_device *dev, u16 host_int )
1641 {
1642         printk( "TLAN:  Test interrupt on %s.\n", dev->name );
1643         return 1;
1644
1645 } /* TLan_HandleDummy */
1646
1647
1648
1649
1650         /***************************************************************
1651          *      TLan_HandleTxEOC
1652          *
1653          *      Returns:
1654          *              1
1655          *      Parms:
1656          *              dev             Device assigned the IRQ that was
1657          *                              raised.
1658          *              host_int        The contents of the HOST_INT
1659          *                              port.
1660          *
1661          *      This driver is structured to determine EOC occurrences by
1662          *      reading the CSTAT member of the list structure.  Tx EOC
1663          *      interrupts are disabled via the DIO INTDIS register.
1664          *      However, TLAN chips before revision 3.0 didn't have this
1665          *      functionality, so process EOC events if this is the
1666          *      case.
1667          *
1668          **************************************************************/
1669
1670 static u32 TLan_HandleTxEOC( struct net_device *dev, u16 host_int )
1671 {
1672         TLanPrivateInfo *priv = netdev_priv(dev);
1673         TLanList                *head_list;
1674         dma_addr_t              head_list_phys;
1675         u32                     ack = 1;
1676
1677         host_int = 0;
1678         if ( priv->tlanRev < 0x30 ) {
1679                 TLAN_DBG( TLAN_DEBUG_TX,
1680                           "TRANSMIT:  Handling TX EOC (Head=%d Tail=%d) -- IRQ\n",
1681                           priv->txHead, priv->txTail );
1682                 head_list = priv->txList + priv->txHead;
1683                 head_list_phys = priv->txListDMA + sizeof(TLanList) * priv->txHead;
1684                 if ( ( head_list->cStat & TLAN_CSTAT_READY ) == TLAN_CSTAT_READY ) {
1685                         netif_stop_queue(dev);
1686                         outl( head_list_phys, dev->base_addr + TLAN_CH_PARM );
1687                         ack |= TLAN_HC_GO;
1688                 } else {
1689                         priv->txInProgress = 0;
1690                 }
1691         }
1692
1693         return ack;
1694
1695 } /* TLan_HandleTxEOC */
1696
1697
1698
1699
1700         /***************************************************************
1701          *      TLan_HandleStatusCheck
1702          *
1703          *      Returns:
1704          *              0 if Adapter check, 1 if Network Status check.
1705          *      Parms:
1706          *              dev             Device assigned the IRQ that was
1707          *                              raised.
1708          *              host_int        The contents of the HOST_INT
1709          *                              port.
1710          *
1711          *      This function handles Adapter Check/Network Status
1712          *      interrupts generated by the adapter.  It checks the
1713          *      vector in the HOST_INT register to determine if it is
1714          *      an Adapter Check interrupt.  If so, it resets the
1715          *      adapter.  Otherwise it clears the status registers
1716          *      and services the PHY.
1717          *
1718          **************************************************************/
1719
1720 static u32 TLan_HandleStatusCheck( struct net_device *dev, u16 host_int )
1721 {
1722         TLanPrivateInfo *priv = netdev_priv(dev);
1723         u32             ack;
1724         u32             error;
1725         u8              net_sts;
1726         u32             phy;
1727         u16             tlphy_ctl;
1728         u16             tlphy_sts;
1729
1730         ack = 1;
1731         if ( host_int & TLAN_HI_IV_MASK ) {
1732                 netif_stop_queue( dev );
1733                 error = inl( dev->base_addr + TLAN_CH_PARM );
1734                 printk( "TLAN:  %s: Adaptor Error = 0x%x\n", dev->name, error );
1735                 TLan_ReadAndClearStats( dev, TLAN_RECORD );
1736                 outl( TLAN_HC_AD_RST, dev->base_addr + TLAN_HOST_CMD );
1737
1738                 schedule_work(&priv->tlan_tqueue);
1739
1740                 netif_wake_queue(dev);
1741                 ack = 0;
1742         } else {
1743                 TLAN_DBG( TLAN_DEBUG_GNRL, "%s: Status Check\n", dev->name );
1744                 phy = priv->phy[priv->phyNum];
1745
1746                 net_sts = TLan_DioRead8( dev->base_addr, TLAN_NET_STS );
1747                 if ( net_sts ) {
1748                         TLan_DioWrite8( dev->base_addr, TLAN_NET_STS, net_sts );
1749                         TLAN_DBG( TLAN_DEBUG_GNRL, "%s:    Net_Sts = %x\n",
1750                                   dev->name, (unsigned) net_sts );
1751                 }
1752                 if ( ( net_sts & TLAN_NET_STS_MIRQ ) &&  ( priv->phyNum == 0 ) ) {
1753                         TLan_MiiReadReg( dev, phy, TLAN_TLPHY_STS, &tlphy_sts );
1754                         TLan_MiiReadReg( dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl );
1755                         if ( ! ( tlphy_sts & TLAN_TS_POLOK ) &&
1756                              ! ( tlphy_ctl & TLAN_TC_SWAPOL ) ) {
1757                                 tlphy_ctl |= TLAN_TC_SWAPOL;
1758                                 TLan_MiiWriteReg( dev, phy, TLAN_TLPHY_CTL, tlphy_ctl);
1759                         } else if ( ( tlphy_sts & TLAN_TS_POLOK ) &&
1760                                     ( tlphy_ctl & TLAN_TC_SWAPOL ) ) {
1761                                 tlphy_ctl &= ~TLAN_TC_SWAPOL;
1762                                 TLan_MiiWriteReg( dev, phy, TLAN_TLPHY_CTL, tlphy_ctl);
1763                         }
1764
1765                         if (debug) {
1766                                 TLan_PhyPrint( dev );
1767                         }
1768                 }
1769         }
1770
1771         return ack;
1772
1773 } /* TLan_HandleStatusCheck */
1774
1775
1776
1777
1778         /***************************************************************
1779          *      TLan_HandleRxEOC
1780          *
1781          *      Returns:
1782          *              1
1783          *      Parms:
1784          *              dev             Device assigned the IRQ that was
1785          *                              raised.
1786          *              host_int        The contents of the HOST_INT
1787          *                              port.
1788          *
1789          *      This driver is structured to determine EOC occurrences by
1790          *      reading the CSTAT member of the list structure.  Rx EOC
1791          *      interrupts are disabled via the DIO INTDIS register.
1792          *      However, TLAN chips before revision 3.0 didn't have this
1793          *      CSTAT member or a INTDIS register, so if this chip is
1794          *      pre-3.0, process EOC interrupts normally.
1795          *
1796          **************************************************************/
1797
1798 static u32 TLan_HandleRxEOC( struct net_device *dev, u16 host_int )
1799 {
1800         TLanPrivateInfo *priv = netdev_priv(dev);
1801         dma_addr_t      head_list_phys;
1802         u32             ack = 1;
1803
1804         if (  priv->tlanRev < 0x30 ) {
1805                 TLAN_DBG( TLAN_DEBUG_RX,
1806                           "RECEIVE:  Handling RX EOC (Head=%d Tail=%d) -- IRQ\n",
1807                           priv->rxHead, priv->rxTail );
1808                 head_list_phys = priv->rxListDMA + sizeof(TLanList) * priv->rxHead;
1809                 outl( head_list_phys, dev->base_addr + TLAN_CH_PARM );
1810                 ack |= TLAN_HC_GO | TLAN_HC_RT;
1811                 priv->rxEocCount++;
1812         }
1813
1814         return ack;
1815
1816 } /* TLan_HandleRxEOC */
1817
1818
1819
1820
1821 /*****************************************************************************
1822 ******************************************************************************
1823
1824         ThunderLAN Driver Timer Function
1825
1826 ******************************************************************************
1827 *****************************************************************************/
1828
1829
1830         /***************************************************************
1831          *      TLan_Timer
1832          *
1833          *      Returns:
1834          *              Nothing
1835          *      Parms:
1836          *              data    A value given to add timer when
1837          *                      add_timer was called.
1838          *
1839          *      This function handles timed functionality for the
1840          *      TLAN driver.  The two current timer uses are for
1841          *      delaying for autonegotionation and driving the ACT LED.
1842          *      -       Autonegotiation requires being allowed about
1843          *              2 1/2 seconds before attempting to transmit a
1844          *              packet.  It would be a very bad thing to hang
1845          *              the kernel this long, so the driver doesn't
1846          *              allow transmission 'til after this time, for
1847          *              certain PHYs.  It would be much nicer if all
1848          *              PHYs were interrupt-capable like the internal
1849          *              PHY.
1850          *      -       The ACT LED, which shows adapter activity, is
1851          *              driven by the driver, and so must be left on
1852          *              for a short period to power up the LED so it
1853          *              can be seen.  This delay can be changed by
1854          *              changing the TLAN_TIMER_ACT_DELAY in tlan.h,
1855          *              if desired.  100 ms  produces a slightly
1856          *              sluggish response.
1857          *
1858          **************************************************************/
1859
1860 static void TLan_Timer( unsigned long data )
1861 {
1862         struct net_device       *dev = (struct net_device *) data;
1863         TLanPrivateInfo *priv = netdev_priv(dev);
1864         u32             elapsed;
1865         unsigned long   flags = 0;
1866
1867         priv->timer.function = NULL;
1868
1869         switch ( priv->timerType ) {
1870 #ifdef MONITOR
1871                 case TLAN_TIMER_LINK_BEAT:
1872                         TLan_PhyMonitor( dev );
1873                         break;
1874 #endif
1875                 case TLAN_TIMER_PHY_PDOWN:
1876                         TLan_PhyPowerDown( dev );
1877                         break;
1878                 case TLAN_TIMER_PHY_PUP:
1879                         TLan_PhyPowerUp( dev );
1880                         break;
1881                 case TLAN_TIMER_PHY_RESET:
1882                         TLan_PhyReset( dev );
1883                         break;
1884                 case TLAN_TIMER_PHY_START_LINK:
1885                         TLan_PhyStartLink( dev );
1886                         break;
1887                 case TLAN_TIMER_PHY_FINISH_AN:
1888                         TLan_PhyFinishAutoNeg( dev );
1889                         break;
1890                 case TLAN_TIMER_FINISH_RESET:
1891                         TLan_FinishReset( dev );
1892                         break;
1893                 case TLAN_TIMER_ACTIVITY:
1894                         spin_lock_irqsave(&priv->lock, flags);
1895                         if ( priv->timer.function == NULL ) {
1896                                 elapsed = jiffies - priv->timerSetAt;
1897                                 if ( elapsed >= TLAN_TIMER_ACT_DELAY ) {
1898                                         TLan_DioWrite8( dev->base_addr,
1899                                                         TLAN_LED_REG, TLAN_LED_LINK );
1900                                 } else  {
1901                                         priv->timer.function = &TLan_Timer;
1902                                         priv->timer.expires = priv->timerSetAt
1903                                                 + TLAN_TIMER_ACT_DELAY;
1904                                         spin_unlock_irqrestore(&priv->lock, flags);
1905                                         add_timer( &priv->timer );
1906                                         break;
1907                                 }
1908                         }
1909                         spin_unlock_irqrestore(&priv->lock, flags);
1910                         break;
1911                 default:
1912                         break;
1913         }
1914
1915 } /* TLan_Timer */
1916
1917
1918
1919
1920 /*****************************************************************************
1921 ******************************************************************************
1922
1923         ThunderLAN Driver Adapter Related Routines
1924
1925 ******************************************************************************
1926 *****************************************************************************/
1927
1928
1929         /***************************************************************
1930          *      TLan_ResetLists
1931          *
1932          *      Returns:
1933          *              Nothing
1934          *      Parms:
1935          *              dev     The device structure with the list
1936          *                      stuctures to be reset.
1937          *
1938          *      This routine sets the variables associated with managing
1939          *      the TLAN lists to their initial values.
1940          *
1941          **************************************************************/
1942
1943 static void TLan_ResetLists( struct net_device *dev )
1944 {
1945         TLanPrivateInfo *priv = netdev_priv(dev);
1946         int             i;
1947         TLanList        *list;
1948         dma_addr_t      list_phys;
1949         struct sk_buff  *skb;
1950
1951         priv->txHead = 0;
1952         priv->txTail = 0;
1953         for ( i = 0; i < TLAN_NUM_TX_LISTS; i++ ) {
1954                 list = priv->txList + i;
1955                 list->cStat = TLAN_CSTAT_UNUSED;
1956                 list->buffer[0].address = 0;
1957                 list->buffer[2].count = 0;
1958                 list->buffer[2].address = 0;
1959                 list->buffer[8].address = 0;
1960                 list->buffer[9].address = 0;
1961         }
1962
1963         priv->rxHead = 0;
1964         priv->rxTail = TLAN_NUM_RX_LISTS - 1;
1965         for ( i = 0; i < TLAN_NUM_RX_LISTS; i++ ) {
1966                 list = priv->rxList + i;
1967                 list_phys = priv->rxListDMA + sizeof(TLanList) * i;
1968                 list->cStat = TLAN_CSTAT_READY;
1969                 list->frameSize = TLAN_MAX_FRAME_SIZE;
1970                 list->buffer[0].count = TLAN_MAX_FRAME_SIZE | TLAN_LAST_BUFFER;
1971                 skb = netdev_alloc_skb_ip_align(dev, TLAN_MAX_FRAME_SIZE + 5);
1972                 if ( !skb ) {
1973                         pr_err("TLAN: out of memory for received data.\n" );
1974                         break;
1975                 }
1976
1977                 list->buffer[0].address = pci_map_single(priv->pciDev,
1978                                                          skb->data,
1979                                                          TLAN_MAX_FRAME_SIZE,
1980                                                          PCI_DMA_FROMDEVICE);
1981                 TLan_StoreSKB(list, skb);
1982                 list->buffer[1].count = 0;
1983                 list->buffer[1].address = 0;
1984                 list->forward = list_phys + sizeof(TLanList);
1985         }
1986
1987         /* in case ran out of memory early, clear bits */
1988         while (i < TLAN_NUM_RX_LISTS) {
1989                 TLan_StoreSKB(priv->rxList + i, NULL);
1990                 ++i;
1991         }
1992         list->forward = 0;
1993
1994 } /* TLan_ResetLists */
1995
1996
1997 static void TLan_FreeLists( struct net_device *dev )
1998 {
1999         TLanPrivateInfo *priv = netdev_priv(dev);
2000         int             i;
2001         TLanList        *list;
2002         struct sk_buff  *skb;
2003
2004         for ( i = 0; i < TLAN_NUM_TX_LISTS; i++ ) {
2005                 list = priv->txList + i;
2006                 skb = TLan_GetSKB(list);
2007                 if ( skb ) {
2008                         pci_unmap_single(
2009                                 priv->pciDev,
2010                                 list->buffer[0].address,
2011                                 max(skb->len,
2012                                     (unsigned int)TLAN_MIN_FRAME_SIZE),
2013                                 PCI_DMA_TODEVICE);
2014                         dev_kfree_skb_any( skb );
2015                         list->buffer[8].address = 0;
2016                         list->buffer[9].address = 0;
2017                 }
2018         }
2019
2020         for ( i = 0; i < TLAN_NUM_RX_LISTS; i++ ) {
2021                 list = priv->rxList + i;
2022                 skb = TLan_GetSKB(list);
2023                 if ( skb ) {
2024                         pci_unmap_single(priv->pciDev,
2025                                          list->buffer[0].address,
2026                                          TLAN_MAX_FRAME_SIZE,
2027                                          PCI_DMA_FROMDEVICE);
2028                         dev_kfree_skb_any( skb );
2029                         list->buffer[8].address = 0;
2030                         list->buffer[9].address = 0;
2031                 }
2032         }
2033 } /* TLan_FreeLists */
2034
2035
2036
2037
2038         /***************************************************************
2039          *      TLan_PrintDio
2040          *
2041          *      Returns:
2042          *              Nothing
2043          *      Parms:
2044          *              io_base         Base IO port of the device of
2045          *                              which to print DIO registers.
2046          *
2047          *      This function prints out all the internal (DIO)
2048          *      registers of a TLAN chip.
2049          *
2050          **************************************************************/
2051
2052 static void TLan_PrintDio( u16 io_base )
2053 {
2054         u32 data0, data1;
2055         int     i;
2056
2057         printk( "TLAN:   Contents of internal registers for io base 0x%04hx.\n",
2058                 io_base );
2059         printk( "TLAN:      Off.  +0         +4\n" );
2060         for ( i = 0; i < 0x4C; i+= 8 ) {
2061                 data0 = TLan_DioRead32( io_base, i );
2062                 data1 = TLan_DioRead32( io_base, i + 0x4 );
2063                 printk( "TLAN:      0x%02x  0x%08x 0x%08x\n", i, data0, data1 );
2064         }
2065
2066 } /* TLan_PrintDio */
2067
2068
2069
2070
2071         /***************************************************************
2072          *      TLan_PrintList
2073          *
2074          *      Returns:
2075          *              Nothing
2076          *      Parms:
2077          *              list    A pointer to the TLanList structure to
2078          *                      be printed.
2079          *              type    A string to designate type of list,
2080          *                      "Rx" or "Tx".
2081          *              num     The index of the list.
2082          *
2083          *      This function prints out the contents of the list
2084          *      pointed to by the list parameter.
2085          *
2086          **************************************************************/
2087
2088 static void TLan_PrintList( TLanList *list, char *type, int num)
2089 {
2090         int i;
2091
2092         printk( "TLAN:   %s List %d at %p\n", type, num, list );
2093         printk( "TLAN:      Forward    = 0x%08x\n",  list->forward );
2094         printk( "TLAN:      CSTAT      = 0x%04hx\n", list->cStat );
2095         printk( "TLAN:      Frame Size = 0x%04hx\n", list->frameSize );
2096         /* for ( i = 0; i < 10; i++ ) { */
2097         for ( i = 0; i < 2; i++ ) {
2098                 printk( "TLAN:      Buffer[%d].count, addr = 0x%08x, 0x%08x\n",
2099                         i, list->buffer[i].count, list->buffer[i].address );
2100         }
2101
2102 } /* TLan_PrintList */
2103
2104
2105
2106
2107         /***************************************************************
2108          *      TLan_ReadAndClearStats
2109          *
2110          *      Returns:
2111          *              Nothing
2112          *      Parms:
2113          *              dev     Pointer to device structure of adapter
2114          *                      to which to read stats.
2115          *              record  Flag indicating whether to add
2116          *
2117          *      This functions reads all the internal status registers
2118          *      of the TLAN chip, which clears them as a side effect.
2119          *      It then either adds the values to the device's status
2120          *      struct, or discards them, depending on whether record
2121          *      is TLAN_RECORD (!=0)  or TLAN_IGNORE (==0).
2122          *
2123          **************************************************************/
2124
2125 static void TLan_ReadAndClearStats( struct net_device *dev, int record )
2126 {
2127         u32             tx_good, tx_under;
2128         u32             rx_good, rx_over;
2129         u32             def_tx, crc, code;
2130         u32             multi_col, single_col;
2131         u32             excess_col, late_col, loss;
2132
2133         outw( TLAN_GOOD_TX_FRMS, dev->base_addr + TLAN_DIO_ADR );
2134         tx_good  = inb( dev->base_addr + TLAN_DIO_DATA );
2135         tx_good += inb( dev->base_addr + TLAN_DIO_DATA + 1 ) << 8;
2136         tx_good += inb( dev->base_addr + TLAN_DIO_DATA + 2 ) << 16;
2137         tx_under = inb( dev->base_addr + TLAN_DIO_DATA + 3 );
2138
2139         outw( TLAN_GOOD_RX_FRMS, dev->base_addr + TLAN_DIO_ADR );
2140         rx_good  = inb( dev->base_addr + TLAN_DIO_DATA );
2141         rx_good += inb( dev->base_addr + TLAN_DIO_DATA + 1 ) << 8;
2142         rx_good += inb( dev->base_addr + TLAN_DIO_DATA + 2 ) << 16;
2143         rx_over  = inb( dev->base_addr + TLAN_DIO_DATA + 3 );
2144
2145         outw( TLAN_DEFERRED_TX, dev->base_addr + TLAN_DIO_ADR );
2146         def_tx  = inb( dev->base_addr + TLAN_DIO_DATA );
2147         def_tx += inb( dev->base_addr + TLAN_DIO_DATA + 1 ) << 8;
2148         crc     = inb( dev->base_addr + TLAN_DIO_DATA + 2 );
2149         code    = inb( dev->base_addr + TLAN_DIO_DATA + 3 );
2150
2151         outw( TLAN_MULTICOL_FRMS, dev->base_addr + TLAN_DIO_ADR );
2152         multi_col   = inb( dev->base_addr + TLAN_DIO_DATA );
2153         multi_col  += inb( dev->base_addr + TLAN_DIO_DATA + 1 ) << 8;
2154         single_col  = inb( dev->base_addr + TLAN_DIO_DATA + 2 );
2155         single_col += inb( dev->base_addr + TLAN_DIO_DATA + 3 ) << 8;
2156
2157         outw( TLAN_EXCESSCOL_FRMS, dev->base_addr + TLAN_DIO_ADR );
2158         excess_col = inb( dev->base_addr + TLAN_DIO_DATA );
2159         late_col   = inb( dev->base_addr + TLAN_DIO_DATA + 1 );
2160         loss       = inb( dev->base_addr + TLAN_DIO_DATA + 2 );
2161
2162         if ( record ) {
2163                 dev->stats.rx_packets += rx_good;
2164                 dev->stats.rx_errors  += rx_over + crc + code;
2165                 dev->stats.tx_packets += tx_good;
2166                 dev->stats.tx_errors  += tx_under + loss;
2167                 dev->stats.collisions += multi_col + single_col + excess_col + late_col;
2168
2169                 dev->stats.rx_over_errors    += rx_over;
2170                 dev->stats.rx_crc_errors     += crc;
2171                 dev->stats.rx_frame_errors   += code;
2172
2173                 dev->stats.tx_aborted_errors += tx_under;
2174                 dev->stats.tx_carrier_errors += loss;
2175         }
2176
2177 } /* TLan_ReadAndClearStats */
2178
2179
2180
2181
2182         /***************************************************************
2183          *      TLan_Reset
2184          *
2185          *      Returns:
2186          *              0
2187          *      Parms:
2188          *              dev     Pointer to device structure of adapter
2189          *                      to be reset.
2190          *
2191          *      This function resets the adapter and it's physical
2192          *      device.  See Chap. 3, pp. 9-10 of the "ThunderLAN
2193          *      Programmer's Guide" for details.  The routine tries to
2194          *      implement what is detailed there, though adjustments
2195          *      have been made.
2196          *
2197          **************************************************************/
2198
2199 static void
2200 TLan_ResetAdapter( struct net_device *dev )
2201 {
2202         TLanPrivateInfo *priv = netdev_priv(dev);
2203         int             i;
2204         u32             addr;
2205         u32             data;
2206         u8              data8;
2207
2208         priv->tlanFullDuplex = false;
2209         priv->phyOnline=0;
2210         netif_carrier_off(dev);
2211
2212 /*  1.  Assert reset bit. */
2213
2214         data = inl(dev->base_addr + TLAN_HOST_CMD);
2215         data |= TLAN_HC_AD_RST;
2216         outl(data, dev->base_addr + TLAN_HOST_CMD);
2217
2218         udelay(1000);
2219
2220 /*  2.  Turn off interrupts. ( Probably isn't necessary ) */
2221
2222         data = inl(dev->base_addr + TLAN_HOST_CMD);
2223         data |= TLAN_HC_INT_OFF;
2224         outl(data, dev->base_addr + TLAN_HOST_CMD);
2225
2226 /*  3.  Clear AREGs and HASHs. */
2227
2228         for ( i = TLAN_AREG_0; i <= TLAN_HASH_2; i += 4 ) {
2229                 TLan_DioWrite32( dev->base_addr, (u16) i, 0 );
2230         }
2231
2232 /*  4.  Setup NetConfig register. */
2233
2234         data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN;
2235         TLan_DioWrite16( dev->base_addr, TLAN_NET_CONFIG, (u16) data );
2236
2237 /*  5.  Load Ld_Tmr and Ld_Thr in HOST_CMD. */
2238
2239         outl( TLAN_HC_LD_TMR | 0x3f, dev->base_addr + TLAN_HOST_CMD );
2240         outl( TLAN_HC_LD_THR | 0x9, dev->base_addr + TLAN_HOST_CMD );
2241
2242 /*  6.  Unreset the MII by setting NMRST (in NetSio) to 1. */
2243
2244         outw( TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR );
2245         addr = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2246         TLan_SetBit( TLAN_NET_SIO_NMRST, addr );
2247
2248 /*  7.  Setup the remaining registers. */
2249
2250         if ( priv->tlanRev >= 0x30 ) {
2251                 data8 = TLAN_ID_TX_EOC | TLAN_ID_RX_EOC;
2252                 TLan_DioWrite8( dev->base_addr, TLAN_INT_DIS, data8 );
2253         }
2254         TLan_PhyDetect( dev );
2255         data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN;
2256
2257         if ( priv->adapter->flags & TLAN_ADAPTER_BIT_RATE_PHY ) {
2258                 data |= TLAN_NET_CFG_BIT;
2259                 if ( priv->aui == 1 ) {
2260                         TLan_DioWrite8( dev->base_addr, TLAN_ACOMMIT, 0x0a );
2261                 } else if ( priv->duplex == TLAN_DUPLEX_FULL ) {
2262                         TLan_DioWrite8( dev->base_addr, TLAN_ACOMMIT, 0x00 );
2263                         priv->tlanFullDuplex = true;
2264                 } else {
2265                         TLan_DioWrite8( dev->base_addr, TLAN_ACOMMIT, 0x08 );
2266                 }
2267         }
2268
2269         if ( priv->phyNum == 0 ) {
2270                 data |= TLAN_NET_CFG_PHY_EN;
2271         }
2272         TLan_DioWrite16( dev->base_addr, TLAN_NET_CONFIG, (u16) data );
2273
2274         if ( priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY ) {
2275                 TLan_FinishReset( dev );
2276         } else {
2277                 TLan_PhyPowerDown( dev );
2278         }
2279
2280 } /* TLan_ResetAdapter */
2281
2282
2283
2284
2285 static void
2286 TLan_FinishReset( struct net_device *dev )
2287 {
2288         TLanPrivateInfo *priv = netdev_priv(dev);
2289         u8              data;
2290         u32             phy;
2291         u8              sio;
2292         u16             status;
2293         u16             partner;
2294         u16             tlphy_ctl;
2295         u16             tlphy_par;
2296         u16             tlphy_id1, tlphy_id2;
2297         int             i;
2298
2299         phy = priv->phy[priv->phyNum];
2300
2301         data = TLAN_NET_CMD_NRESET | TLAN_NET_CMD_NWRAP;
2302         if ( priv->tlanFullDuplex ) {
2303                 data |= TLAN_NET_CMD_DUPLEX;
2304         }
2305         TLan_DioWrite8( dev->base_addr, TLAN_NET_CMD, data );
2306         data = TLAN_NET_MASK_MASK4 | TLAN_NET_MASK_MASK5;
2307         if ( priv->phyNum == 0 ) {
2308                 data |= TLAN_NET_MASK_MASK7;
2309         }
2310         TLan_DioWrite8( dev->base_addr, TLAN_NET_MASK, data );
2311         TLan_DioWrite16( dev->base_addr, TLAN_MAX_RX, ((1536)+7)&~7 );
2312         TLan_MiiReadReg( dev, phy, MII_GEN_ID_HI, &tlphy_id1 );
2313         TLan_MiiReadReg( dev, phy, MII_GEN_ID_LO, &tlphy_id2 );
2314
2315         if ( ( priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY ) ||
2316              ( priv->aui ) ) {
2317                 status = MII_GS_LINK;
2318                 printk( "TLAN:  %s: Link forced.\n", dev->name );
2319         } else {
2320                 TLan_MiiReadReg( dev, phy, MII_GEN_STS, &status );
2321                 udelay( 1000 );
2322                 TLan_MiiReadReg( dev, phy, MII_GEN_STS, &status );
2323                 if ( (status & MII_GS_LINK) &&
2324                      /* We only support link info on Nat.Sem. PHY's */
2325                         (tlphy_id1 == NAT_SEM_ID1) &&
2326                         (tlphy_id2 == NAT_SEM_ID2) ) {
2327                         TLan_MiiReadReg( dev, phy, MII_AN_LPA, &partner );
2328                         TLan_MiiReadReg( dev, phy, TLAN_TLPHY_PAR, &tlphy_par );
2329
2330                         printk( "TLAN: %s: Link active with ", dev->name );
2331                         if (!(tlphy_par & TLAN_PHY_AN_EN_STAT)) {
2332                                  printk( "forced 10%sMbps %s-Duplex\n",
2333                                          tlphy_par & TLAN_PHY_SPEED_100 ? "" : "0",
2334                                          tlphy_par & TLAN_PHY_DUPLEX_FULL ? "Full" : "Half");
2335                         } else {
2336                                 printk( "AutoNegotiation enabled, at 10%sMbps %s-Duplex\n",
2337                                         tlphy_par & TLAN_PHY_SPEED_100 ? "" : "0",
2338                                         tlphy_par & TLAN_PHY_DUPLEX_FULL ? "Full" : "Half");
2339                                 printk("TLAN: Partner capability: ");
2340                                         for (i = 5; i <= 10; i++)
2341                                                 if (partner & (1<<i))
2342                                                         printk("%s",media[i-5]);
2343                                 printk("\n");
2344                         }
2345
2346                         TLan_DioWrite8( dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK );
2347 #ifdef MONITOR
2348                         /* We have link beat..for now anyway */
2349                         priv->link = 1;
2350                         /*Enabling link beat monitoring */
2351                         TLan_SetTimer( dev, (10*HZ), TLAN_TIMER_LINK_BEAT );
2352 #endif
2353                 } else if (status & MII_GS_LINK)  {
2354                         printk( "TLAN: %s: Link active\n", dev->name );
2355                         TLan_DioWrite8( dev->base_addr, TLAN_LED_REG, TLAN_LED_LINK );
2356                 }
2357         }
2358
2359         if ( priv->phyNum == 0 ) {
2360                 TLan_MiiReadReg( dev, phy, TLAN_TLPHY_CTL, &tlphy_ctl );
2361                 tlphy_ctl |= TLAN_TC_INTEN;
2362                 TLan_MiiWriteReg( dev, phy, TLAN_TLPHY_CTL, tlphy_ctl );
2363                 sio = TLan_DioRead8( dev->base_addr, TLAN_NET_SIO );
2364                 sio |= TLAN_NET_SIO_MINTEN;
2365                 TLan_DioWrite8( dev->base_addr, TLAN_NET_SIO, sio );
2366         }
2367
2368         if ( status & MII_GS_LINK ) {
2369                 TLan_SetMac( dev, 0, dev->dev_addr );
2370                 priv->phyOnline = 1;
2371                 outb( ( TLAN_HC_INT_ON >> 8 ), dev->base_addr + TLAN_HOST_CMD + 1 );
2372                 if ( debug >= 1 && debug != TLAN_DEBUG_PROBE ) {
2373                         outb( ( TLAN_HC_REQ_INT >> 8 ), dev->base_addr + TLAN_HOST_CMD + 1 );
2374                 }
2375                 outl( priv->rxListDMA, dev->base_addr + TLAN_CH_PARM );
2376                 outl( TLAN_HC_GO | TLAN_HC_RT, dev->base_addr + TLAN_HOST_CMD );
2377                 netif_carrier_on(dev);
2378         } else {
2379                 printk( "TLAN: %s: Link inactive, will retry in 10 secs...\n",
2380                         dev->name );
2381                 TLan_SetTimer( dev, (10*HZ), TLAN_TIMER_FINISH_RESET );
2382                 return;
2383         }
2384         TLan_SetMulticastList(dev);
2385
2386 } /* TLan_FinishReset */
2387
2388
2389
2390
2391         /***************************************************************
2392          *      TLan_SetMac
2393          *
2394          *      Returns:
2395          *              Nothing
2396          *      Parms:
2397          *              dev     Pointer to device structure of adapter
2398          *                      on which to change the AREG.
2399          *              areg    The AREG to set the address in (0 - 3).
2400          *              mac     A pointer to an array of chars.  Each
2401          *                      element stores one byte of the address.
2402          *                      IE, it isn't in ascii.
2403          *
2404          *      This function transfers a MAC address to one of the
2405          *      TLAN AREGs (address registers).  The TLAN chip locks
2406          *      the register on writing to offset 0 and unlocks the
2407          *      register after writing to offset 5.  If NULL is passed
2408          *      in mac, then the AREG is filled with 0's.
2409          *
2410          **************************************************************/
2411
2412 static void TLan_SetMac( struct net_device *dev, int areg, char *mac )
2413 {
2414         int i;
2415
2416         areg *= 6;
2417
2418         if ( mac != NULL ) {
2419                 for ( i = 0; i < 6; i++ )
2420                         TLan_DioWrite8( dev->base_addr,
2421                                         TLAN_AREG_0 + areg + i, mac[i] );
2422         } else {
2423                 for ( i = 0; i < 6; i++ )
2424                         TLan_DioWrite8( dev->base_addr,
2425                                         TLAN_AREG_0 + areg + i, 0 );
2426         }
2427
2428 } /* TLan_SetMac */
2429
2430
2431
2432
2433 /*****************************************************************************
2434 ******************************************************************************
2435
2436         ThunderLAN Driver PHY Layer Routines
2437
2438 ******************************************************************************
2439 *****************************************************************************/
2440
2441
2442
2443         /*********************************************************************
2444          *      TLan_PhyPrint
2445          *
2446          *      Returns:
2447          *              Nothing
2448          *      Parms:
2449          *              dev     A pointer to the device structure of the
2450          *                      TLAN device having the PHYs to be detailed.
2451          *
2452          *      This function prints the registers a PHY (aka transceiver).
2453          *
2454          ********************************************************************/
2455
2456 static void TLan_PhyPrint( struct net_device *dev )
2457 {
2458         TLanPrivateInfo *priv = netdev_priv(dev);
2459         u16 i, data0, data1, data2, data3, phy;
2460
2461         phy = priv->phy[priv->phyNum];
2462
2463         if ( priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY ) {
2464                 printk( "TLAN:   Device %s, Unmanaged PHY.\n", dev->name );
2465         } else if ( phy <= TLAN_PHY_MAX_ADDR ) {
2466                 printk( "TLAN:   Device %s, PHY 0x%02x.\n", dev->name, phy );
2467                 printk( "TLAN:      Off.  +0     +1     +2     +3\n" );
2468                 for ( i = 0; i < 0x20; i+= 4 ) {
2469                         printk( "TLAN:      0x%02x", i );
2470                         TLan_MiiReadReg( dev, phy, i, &data0 );
2471                         printk( " 0x%04hx", data0 );
2472                         TLan_MiiReadReg( dev, phy, i + 1, &data1 );
2473                         printk( " 0x%04hx", data1 );
2474                         TLan_MiiReadReg( dev, phy, i + 2, &data2 );
2475                         printk( " 0x%04hx", data2 );
2476                         TLan_MiiReadReg( dev, phy, i + 3, &data3 );
2477                         printk( " 0x%04hx\n", data3 );
2478                 }
2479         } else {
2480                 printk( "TLAN:   Device %s, Invalid PHY.\n", dev->name );
2481         }
2482
2483 } /* TLan_PhyPrint */
2484
2485
2486
2487
2488         /*********************************************************************
2489          *      TLan_PhyDetect
2490          *
2491          *      Returns:
2492          *              Nothing
2493          *      Parms:
2494          *              dev     A pointer to the device structure of the adapter
2495          *                      for which the PHY needs determined.
2496          *
2497          *      So far I've found that adapters which have external PHYs
2498          *      may also use the internal PHY for part of the functionality.
2499          *      (eg, AUI/Thinnet).  This function finds out if this TLAN
2500          *      chip has an internal PHY, and then finds the first external
2501          *      PHY (starting from address 0) if it exists).
2502          *
2503          ********************************************************************/
2504
2505 static void TLan_PhyDetect( struct net_device *dev )
2506 {
2507         TLanPrivateInfo *priv = netdev_priv(dev);
2508         u16             control;
2509         u16             hi;
2510         u16             lo;
2511         u32             phy;
2512
2513         if ( priv->adapter->flags & TLAN_ADAPTER_UNMANAGED_PHY ) {
2514                 priv->phyNum = 0xFFFF;
2515                 return;
2516         }
2517
2518         TLan_MiiReadReg( dev, TLAN_PHY_MAX_ADDR, MII_GEN_ID_HI, &hi );
2519
2520         if ( hi != 0xFFFF ) {
2521                 priv->phy[0] = TLAN_PHY_MAX_ADDR;
2522         } else {
2523                 priv->phy[0] = TLAN_PHY_NONE;
2524         }
2525
2526         priv->phy[1] = TLAN_PHY_NONE;
2527         for ( phy = 0; phy <= TLAN_PHY_MAX_ADDR; phy++ ) {
2528                 TLan_MiiReadReg( dev, phy, MII_GEN_CTL, &control );
2529                 TLan_MiiReadReg( dev, phy, MII_GEN_ID_HI, &hi );
2530                 TLan_MiiReadReg( dev, phy, MII_GEN_ID_LO, &lo );
2531                 if ( ( control != 0xFFFF ) ||
2532                      ( hi != 0xFFFF ) || ( lo != 0xFFFF ) ) {
2533                         TLAN_DBG( TLAN_DEBUG_GNRL,
2534                                   "PHY found at %02x %04x %04x %04x\n",
2535                                   phy, control, hi, lo );
2536                         if ( ( priv->phy[1] == TLAN_PHY_NONE ) &&
2537                              ( phy != TLAN_PHY_MAX_ADDR ) ) {
2538                                 priv->phy[1] = phy;
2539                         }
2540                 }
2541         }
2542
2543         if ( priv->phy[1] != TLAN_PHY_NONE ) {
2544                 priv->phyNum = 1;
2545         } else if ( priv->phy[0] != TLAN_PHY_NONE ) {
2546                 priv->phyNum = 0;
2547         } else {
2548                 printk( "TLAN:  Cannot initialize device, no PHY was found!\n" );
2549         }
2550
2551 } /* TLan_PhyDetect */
2552
2553
2554
2555
2556 static void TLan_PhyPowerDown( struct net_device *dev )
2557 {
2558         TLanPrivateInfo *priv = netdev_priv(dev);
2559         u16             value;
2560
2561         TLAN_DBG( TLAN_DEBUG_GNRL, "%s: Powering down PHY(s).\n", dev->name );
2562         value = MII_GC_PDOWN | MII_GC_LOOPBK | MII_GC_ISOLATE;
2563         TLan_MiiSync( dev->base_addr );
2564         TLan_MiiWriteReg( dev, priv->phy[priv->phyNum], MII_GEN_CTL, value );
2565         if ( ( priv->phyNum == 0 ) &&
2566              ( priv->phy[1] != TLAN_PHY_NONE ) &&
2567              ( ! ( priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10 ) ) ) {
2568                 TLan_MiiSync( dev->base_addr );
2569                 TLan_MiiWriteReg( dev, priv->phy[1], MII_GEN_CTL, value );
2570         }
2571
2572         /* Wait for 50 ms and powerup
2573          * This is abitrary.  It is intended to make sure the
2574          * transceiver settles.
2575          */
2576         TLan_SetTimer( dev, (HZ/20), TLAN_TIMER_PHY_PUP );
2577
2578 } /* TLan_PhyPowerDown */
2579
2580
2581
2582
2583 static void TLan_PhyPowerUp( struct net_device *dev )
2584 {
2585         TLanPrivateInfo *priv = netdev_priv(dev);
2586         u16             value;
2587
2588         TLAN_DBG( TLAN_DEBUG_GNRL, "%s: Powering up PHY.\n", dev->name );
2589         TLan_MiiSync( dev->base_addr );
2590         value = MII_GC_LOOPBK;
2591         TLan_MiiWriteReg( dev, priv->phy[priv->phyNum], MII_GEN_CTL, value );
2592         TLan_MiiSync(dev->base_addr);
2593         /* Wait for 500 ms and reset the
2594          * transceiver.  The TLAN docs say both 50 ms and
2595          * 500 ms, so do the longer, just in case.
2596          */
2597         TLan_SetTimer( dev, (HZ/20), TLAN_TIMER_PHY_RESET );
2598
2599 } /* TLan_PhyPowerUp */
2600
2601
2602
2603
2604 static void TLan_PhyReset( struct net_device *dev )
2605 {
2606         TLanPrivateInfo *priv = netdev_priv(dev);
2607         u16             phy;
2608         u16             value;
2609
2610         phy = priv->phy[priv->phyNum];
2611
2612         TLAN_DBG( TLAN_DEBUG_GNRL, "%s: Reseting PHY.\n", dev->name );
2613         TLan_MiiSync( dev->base_addr );
2614         value = MII_GC_LOOPBK | MII_GC_RESET;
2615         TLan_MiiWriteReg( dev, phy, MII_GEN_CTL, value );
2616         TLan_MiiReadReg( dev, phy, MII_GEN_CTL, &value );
2617         while ( value & MII_GC_RESET ) {
2618                 TLan_MiiReadReg( dev, phy, MII_GEN_CTL, &value );
2619         }
2620
2621         /* Wait for 500 ms and initialize.
2622          * I don't remember why I wait this long.
2623          * I've changed this to 50ms, as it seems long enough.
2624          */
2625         TLan_SetTimer( dev, (HZ/20), TLAN_TIMER_PHY_START_LINK );
2626
2627 } /* TLan_PhyReset */
2628
2629
2630
2631
2632 static void TLan_PhyStartLink( struct net_device *dev )
2633 {
2634         TLanPrivateInfo *priv = netdev_priv(dev);
2635         u16             ability;
2636         u16             control;
2637         u16             data;
2638         u16             phy;
2639         u16             status;
2640         u16             tctl;
2641
2642         phy = priv->phy[priv->phyNum];
2643         TLAN_DBG( TLAN_DEBUG_GNRL, "%s: Trying to activate link.\n", dev->name );
2644         TLan_MiiReadReg( dev, phy, MII_GEN_STS, &status );
2645         TLan_MiiReadReg( dev, phy, MII_GEN_STS, &ability );
2646
2647         if ( ( status & MII_GS_AUTONEG ) &&
2648              ( ! priv->aui ) ) {
2649                 ability = status >> 11;
2650                 if ( priv->speed  == TLAN_SPEED_10 &&
2651                      priv->duplex == TLAN_DUPLEX_HALF) {
2652                         TLan_MiiWriteReg( dev, phy, MII_GEN_CTL, 0x0000);
2653                 } else if ( priv->speed == TLAN_SPEED_10 &&
2654                             priv->duplex == TLAN_DUPLEX_FULL) {
2655                         priv->tlanFullDuplex = true;
2656                         TLan_MiiWriteReg( dev, phy, MII_GEN_CTL, 0x0100);
2657                 } else if ( priv->speed == TLAN_SPEED_100 &&
2658                             priv->duplex == TLAN_DUPLEX_HALF) {
2659                         TLan_MiiWriteReg( dev, phy, MII_GEN_CTL, 0x2000);
2660                 } else if ( priv->speed == TLAN_SPEED_100 &&
2661                             priv->duplex == TLAN_DUPLEX_FULL) {
2662                         priv->tlanFullDuplex = true;
2663                         TLan_MiiWriteReg( dev, phy, MII_GEN_CTL, 0x2100);
2664                 } else {
2665
2666                         /* Set Auto-Neg advertisement */
2667                         TLan_MiiWriteReg( dev, phy, MII_AN_ADV, (ability << 5) | 1);
2668                         /* Enablee Auto-Neg */
2669                         TLan_MiiWriteReg( dev, phy, MII_GEN_CTL, 0x1000 );
2670                         /* Restart Auto-Neg */
2671                         TLan_MiiWriteReg( dev, phy, MII_GEN_CTL, 0x1200 );
2672                         /* Wait for 4 sec for autonegotiation
2673                         * to complete.  The max spec time is less than this
2674                         * but the card need additional time to start AN.
2675                         * .5 sec should be plenty extra.
2676                         */
2677                         printk( "TLAN: %s: Starting autonegotiation.\n", dev->name );
2678                         TLan_SetTimer( dev, (2*HZ), TLAN_TIMER_PHY_FINISH_AN );
2679                         return;
2680                 }
2681
2682         }
2683
2684         if ( ( priv->aui ) && ( priv->phyNum != 0 ) ) {
2685                 priv->phyNum = 0;
2686                 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN;
2687                 TLan_DioWrite16( dev->base_addr, TLAN_NET_CONFIG, data );
2688                 TLan_SetTimer( dev, (40*HZ/1000), TLAN_TIMER_PHY_PDOWN );
2689                 return;
2690         }  else if ( priv->phyNum == 0 ) {
2691                 control = 0;
2692                 TLan_MiiReadReg( dev, phy, TLAN_TLPHY_CTL, &tctl );
2693                 if ( priv->aui ) {
2694                         tctl |= TLAN_TC_AUISEL;
2695                 } else {
2696                         tctl &= ~TLAN_TC_AUISEL;
2697                         if ( priv->duplex == TLAN_DUPLEX_FULL ) {
2698                                 control |= MII_GC_DUPLEX;
2699                                 priv->tlanFullDuplex = true;
2700                         }
2701                         if ( priv->speed == TLAN_SPEED_100 ) {
2702                                 control |= MII_GC_SPEEDSEL;
2703                         }
2704                 }
2705                 TLan_MiiWriteReg( dev, phy, MII_GEN_CTL, control );
2706                 TLan_MiiWriteReg( dev, phy, TLAN_TLPHY_CTL, tctl );
2707         }
2708
2709         /* Wait for 2 sec to give the transceiver time
2710          * to establish link.
2711          */
2712         TLan_SetTimer( dev, (4*HZ), TLAN_TIMER_FINISH_RESET );
2713
2714 } /* TLan_PhyStartLink */
2715
2716
2717
2718
2719 static void TLan_PhyFinishAutoNeg( struct net_device *dev )
2720 {
2721         TLanPrivateInfo *priv = netdev_priv(dev);
2722         u16             an_adv;
2723         u16             an_lpa;
2724         u16             data;
2725         u16             mode;
2726         u16             phy;
2727         u16             status;
2728
2729         phy = priv->phy[priv->phyNum];
2730
2731         TLan_MiiReadReg( dev, phy, MII_GEN_STS, &status );
2732         udelay( 1000 );
2733         TLan_MiiReadReg( dev, phy, MII_GEN_STS, &status );
2734
2735         if ( ! ( status & MII_GS_AUTOCMPLT ) ) {
2736                 /* Wait for 8 sec to give the process
2737                  * more time.  Perhaps we should fail after a while.
2738                  */
2739                  if (!priv->neg_be_verbose++) {
2740                          pr_info("TLAN:  Giving autonegotiation more time.\n");
2741                          pr_info("TLAN:  Please check that your adapter has\n");
2742                          pr_info("TLAN:  been properly connected to a HUB or Switch.\n");
2743                          pr_info("TLAN:  Trying to establish link in the background...\n");
2744                  }
2745                 TLan_SetTimer( dev, (8*HZ), TLAN_TIMER_PHY_FINISH_AN );
2746                 return;
2747         }
2748
2749         printk( "TLAN: %s: Autonegotiation complete.\n", dev->name );
2750         TLan_MiiReadReg( dev, phy, MII_AN_ADV, &an_adv );
2751         TLan_MiiReadReg( dev, phy, MII_AN_LPA, &an_lpa );
2752         mode = an_adv & an_lpa & 0x03E0;
2753         if ( mode & 0x0100 ) {
2754                 priv->tlanFullDuplex = true;
2755         } else if ( ! ( mode & 0x0080 ) && ( mode & 0x0040 ) ) {
2756                 priv->tlanFullDuplex = true;
2757         }
2758
2759         if ( ( ! ( mode & 0x0180 ) ) &&
2760              ( priv->adapter->flags & TLAN_ADAPTER_USE_INTERN_10 ) &&
2761              ( priv->phyNum != 0 ) ) {
2762                 priv->phyNum = 0;
2763                 data = TLAN_NET_CFG_1FRAG | TLAN_NET_CFG_1CHAN | TLAN_NET_CFG_PHY_EN;
2764                 TLan_DioWrite16( dev->base_addr, TLAN_NET_CONFIG, data );
2765                 TLan_SetTimer( dev, (400*HZ/1000), TLAN_TIMER_PHY_PDOWN );
2766                 return;
2767         }
2768
2769         if ( priv->phyNum == 0 ) {
2770                 if ( ( priv->duplex == TLAN_DUPLEX_FULL ) ||
2771                      ( an_adv & an_lpa & 0x0040 ) ) {
2772                         TLan_MiiWriteReg( dev, phy, MII_GEN_CTL,
2773                                           MII_GC_AUTOENB | MII_GC_DUPLEX );
2774                         pr_info("TLAN:  Starting internal PHY with FULL-DUPLEX\n" );
2775                 } else {
2776                         TLan_MiiWriteReg( dev, phy, MII_GEN_CTL, MII_GC_AUTOENB );
2777                         pr_info( "TLAN:  Starting internal PHY with HALF-DUPLEX\n" );
2778                 }
2779         }
2780
2781         /* Wait for 100 ms.  No reason in partiticular.
2782          */
2783         TLan_SetTimer( dev, (HZ/10), TLAN_TIMER_FINISH_RESET );
2784
2785 } /* TLan_PhyFinishAutoNeg */
2786
2787 #ifdef MONITOR
2788
2789         /*********************************************************************
2790         *
2791         *      TLan_phyMonitor
2792         *
2793         *      Returns:
2794         *              None
2795         *
2796         *      Params:
2797         *              dev             The device structure of this device.
2798         *
2799         *
2800         *      This function monitors PHY condition by reading the status
2801         *      register via the MII bus. This can be used to give info
2802         *      about link changes (up/down), and possible switch to alternate
2803         *      media.
2804         *
2805         * ******************************************************************/
2806
2807 void TLan_PhyMonitor( struct net_device *dev )
2808 {
2809         TLanPrivateInfo *priv = netdev_priv(dev);
2810         u16     phy;
2811         u16     phy_status;
2812
2813         phy = priv->phy[priv->phyNum];
2814
2815         /* Get PHY status register */
2816         TLan_MiiReadReg( dev, phy, MII_GEN_STS, &phy_status );
2817
2818         /* Check if link has been lost */
2819         if (!(phy_status & MII_GS_LINK)) {
2820                if (priv->link) {
2821                       priv->link = 0;
2822                       printk(KERN_DEBUG "TLAN: %s has lost link\n", dev->name);
2823                       netif_carrier_off(dev);
2824                       TLan_SetTimer( dev, (2*HZ), TLAN_TIMER_LINK_BEAT );
2825                       return;
2826                 }
2827         }
2828
2829         /* Link restablished? */
2830         if ((phy_status & MII_GS_LINK) && !priv->link) {
2831                 priv->link = 1;
2832                 printk(KERN_DEBUG "TLAN: %s has reestablished link\n", dev->name);
2833                 netif_carrier_on(dev);
2834         }
2835
2836         /* Setup a new monitor */
2837         TLan_SetTimer( dev, (2*HZ), TLAN_TIMER_LINK_BEAT );
2838 }
2839
2840 #endif /* MONITOR */
2841
2842
2843 /*****************************************************************************
2844 ******************************************************************************
2845
2846         ThunderLAN Driver MII Routines
2847
2848         These routines are based on the information in Chap. 2 of the
2849         "ThunderLAN Programmer's Guide", pp. 15-24.
2850
2851 ******************************************************************************
2852 *****************************************************************************/
2853
2854
2855         /***************************************************************
2856          *      TLan_MiiReadReg
2857          *
2858          *      Returns:
2859          *              false   if ack received ok
2860          *              true    if no ack received or other error
2861          *
2862          *      Parms:
2863          *              dev             The device structure containing
2864          *                              The io address and interrupt count
2865          *                              for this device.
2866          *              phy             The address of the PHY to be queried.
2867          *              reg             The register whose contents are to be
2868          *                              retrieved.
2869          *              val             A pointer to a variable to store the
2870          *                              retrieved value.
2871          *
2872          *      This function uses the TLAN's MII bus to retrieve the contents
2873          *      of a given register on a PHY.  It sends the appropriate info
2874          *      and then reads the 16-bit register value from the MII bus via
2875          *      the TLAN SIO register.
2876          *
2877          **************************************************************/
2878
2879 static bool TLan_MiiReadReg( struct net_device *dev, u16 phy, u16 reg, u16 *val )
2880 {
2881         u8      nack;
2882         u16     sio, tmp;
2883         u32     i;
2884         bool    err;
2885         int     minten;
2886         TLanPrivateInfo *priv = netdev_priv(dev);
2887         unsigned long flags = 0;
2888
2889         err = false;
2890         outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
2891         sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
2892
2893         if (!in_irq())
2894                 spin_lock_irqsave(&priv->lock, flags);
2895
2896         TLan_MiiSync(dev->base_addr);
2897
2898         minten = TLan_GetBit( TLAN_NET_SIO_MINTEN, sio );
2899         if ( minten )
2900                 TLan_ClearBit(TLAN_NET_SIO_MINTEN, sio);
2901
2902         TLan_MiiSendData( dev->base_addr, 0x1, 2 );     /* Start ( 01b ) */
2903         TLan_MiiSendData( dev->base_addr, 0x2, 2 );     /* Read  ( 10b ) */
2904         TLan_MiiSendData( dev->base_addr, phy, 5 );     /* Device #      */
2905         TLan_MiiSendData( dev->base_addr, reg, 5 );     /* Register #    */
2906
2907
2908         TLan_ClearBit(TLAN_NET_SIO_MTXEN, sio);         /* Change direction */
2909
2910         TLan_ClearBit(TLAN_NET_SIO_MCLK, sio);          /* Clock Idle bit */
2911         TLan_SetBit(TLAN_NET_SIO_MCLK, sio);
2912         TLan_ClearBit(TLAN_NET_SIO_MCLK, sio);          /* Wait 300ns */
2913
2914         nack = TLan_GetBit(TLAN_NET_SIO_MDATA, sio);    /* Check for ACK */
2915         TLan_SetBit(TLAN_NET_SIO_MCLK, sio);            /* Finish ACK */
2916         if (nack) {                                     /* No ACK, so fake it */
2917                 for (i = 0; i < 16; i++) {
2918                         TLan_ClearBit(TLAN_NET_SIO_MCLK, sio);
2919                         TLan_SetBit(TLAN_NET_SIO_MCLK, sio);
2920                 }
2921                 tmp = 0xffff;
2922                 err = true;
2923         } else {                                        /* ACK, so read data */
2924                 for (tmp = 0, i = 0x8000; i; i >>= 1) {
2925                         TLan_ClearBit(TLAN_NET_SIO_MCLK, sio);
2926                         if (TLan_GetBit(TLAN_NET_SIO_MDATA, sio))
2927                                 tmp |= i;
2928                         TLan_SetBit(TLAN_NET_SIO_MCLK, sio);
2929                 }
2930         }
2931
2932
2933         TLan_ClearBit(TLAN_NET_SIO_MCLK, sio);          /* Idle cycle */
2934         TLan_SetBit(TLAN_NET_SIO_MCLK, sio);
2935
2936         if ( minten )
2937                 TLan_SetBit(TLAN_NET_SIO_MINTEN, sio);
2938
2939         *val = tmp;
2940
2941         if (!in_irq())
2942                 spin_unlock_irqrestore(&priv->lock, flags);
2943
2944         return err;
2945
2946 } /* TLan_MiiReadReg */
2947
2948
2949
2950
2951         /***************************************************************
2952          *      TLan_MiiSendData
2953          *
2954          *      Returns:
2955          *              Nothing
2956          *      Parms:
2957          *              base_port       The base IO port of the adapter in
2958          *                              question.
2959          *              dev             The address of the PHY to be queried.
2960          *              data            The value to be placed on the MII bus.
2961          *              num_bits        The number of bits in data that are to
2962          *                              be placed on the MII bus.
2963          *
2964          *      This function sends on sequence of bits on the MII
2965          *      configuration bus.
2966          *
2967          **************************************************************/
2968
2969 static void TLan_MiiSendData( u16 base_port, u32 data, unsigned num_bits )
2970 {
2971         u16 sio;
2972         u32 i;
2973
2974         if ( num_bits == 0 )
2975                 return;
2976
2977         outw( TLAN_NET_SIO, base_port + TLAN_DIO_ADR );
2978         sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
2979         TLan_SetBit( TLAN_NET_SIO_MTXEN, sio );
2980
2981         for ( i = ( 0x1 << ( num_bits - 1 ) ); i; i >>= 1 ) {
2982                 TLan_ClearBit( TLAN_NET_SIO_MCLK, sio );
2983                 (void) TLan_GetBit( TLAN_NET_SIO_MCLK, sio );
2984                 if ( data & i )
2985                         TLan_SetBit( TLAN_NET_SIO_MDATA, sio );
2986                 else
2987                         TLan_ClearBit( TLAN_NET_SIO_MDATA, sio );
2988                 TLan_SetBit( TLAN_NET_SIO_MCLK, sio );
2989                 (void) TLan_GetBit( TLAN_NET_SIO_MCLK, sio );
2990         }
2991
2992 } /* TLan_MiiSendData */
2993
2994
2995
2996
2997         /***************************************************************
2998          *      TLan_MiiSync
2999          *
3000          *      Returns:
3001          *              Nothing
3002          *      Parms:
3003          *              base_port       The base IO port of the adapter in
3004          *                              question.
3005          *
3006          *      This functions syncs all PHYs in terms of the MII configuration
3007          *      bus.
3008          *
3009          **************************************************************/
3010
3011 static void TLan_MiiSync( u16 base_port )
3012 {
3013         int i;
3014         u16 sio;
3015
3016         outw( TLAN_NET_SIO, base_port + TLAN_DIO_ADR );
3017         sio = base_port + TLAN_DIO_DATA + TLAN_NET_SIO;
3018
3019         TLan_ClearBit( TLAN_NET_SIO_MTXEN, sio );
3020         for ( i = 0; i < 32; i++ ) {
3021                 TLan_ClearBit( TLAN_NET_SIO_MCLK, sio );
3022                 TLan_SetBit( TLAN_NET_SIO_MCLK, sio );
3023         }
3024
3025 } /* TLan_MiiSync */
3026
3027
3028
3029
3030         /***************************************************************
3031          *      TLan_MiiWriteReg
3032          *
3033          *      Returns:
3034          *              Nothing
3035          *      Parms:
3036          *              dev             The device structure for the device
3037          *                              to write to.
3038          *              phy             The address of the PHY to be written to.
3039          *              reg             The register whose contents are to be
3040          *                              written.
3041          *              val             The value to be written to the register.
3042          *
3043          *      This function uses the TLAN's MII bus to write the contents of a
3044          *      given register on a PHY.  It sends the appropriate info and then
3045          *      writes the 16-bit register value from the MII configuration bus
3046          *      via the TLAN SIO register.
3047          *
3048          **************************************************************/
3049
3050 static void TLan_MiiWriteReg( struct net_device *dev, u16 phy, u16 reg, u16 val )
3051 {
3052         u16     sio;
3053         int     minten;
3054         unsigned long flags = 0;
3055         TLanPrivateInfo *priv = netdev_priv(dev);
3056
3057         outw(TLAN_NET_SIO, dev->base_addr + TLAN_DIO_ADR);
3058         sio = dev->base_addr + TLAN_DIO_DATA + TLAN_NET_SIO;
3059
3060         if (!in_irq())
3061                 spin_lock_irqsave(&priv->lock, flags);
3062
3063         TLan_MiiSync( dev->base_addr );
3064
3065         minten = TLan_GetBit( TLAN_NET_SIO_MINTEN, sio );
3066         if ( minten )
3067                 TLan_ClearBit( TLAN_NET_SIO_MINTEN, sio );
3068
3069         TLan_MiiSendData( dev->base_addr, 0x1, 2 );     /* Start ( 01b ) */
3070         TLan_MiiSendData( dev->base_addr, 0x1, 2 );     /* Write ( 01b ) */
3071         TLan_MiiSendData( dev->base_addr, phy, 5 );     /* Device #      */
3072         TLan_MiiSendData( dev->base_addr, reg, 5 );     /* Register #    */
3073
3074         TLan_MiiSendData( dev->base_addr, 0x2, 2 );     /* Send ACK */
3075         TLan_MiiSendData( dev->base_addr, val, 16 );    /* Send Data */
3076
3077         TLan_ClearBit( TLAN_NET_SIO_MCLK, sio );        /* Idle cycle */
3078         TLan_SetBit( TLAN_NET_SIO_MCLK, sio );
3079
3080         if ( minten )
3081                 TLan_SetBit( TLAN_NET_SIO_MINTEN, sio );
3082
3083         if (!in_irq())
3084                 spin_unlock_irqrestore(&priv->lock, flags);
3085
3086 } /* TLan_MiiWriteReg */
3087
3088
3089
3090
3091 /*****************************************************************************
3092 ******************************************************************************
3093
3094         ThunderLAN Driver Eeprom routines
3095
3096         The Compaq Netelligent 10 and 10/100 cards use a Microchip 24C02A
3097         EEPROM.  These functions are based on information in Microchip's
3098         data sheet.  I don't know how well this functions will work with
3099         other EEPROMs.
3100
3101 ******************************************************************************
3102 *****************************************************************************/
3103
3104
3105         /***************************************************************
3106          *      TLan_EeSendStart
3107          *
3108          *      Returns:
3109          *              Nothing
3110          *      Parms:
3111          *              io_base         The IO port base address for the
3112          *                              TLAN device with the EEPROM to
3113          *                              use.
3114          *
3115          *      This function sends a start cycle to an EEPROM attached
3116          *      to a TLAN chip.
3117          *
3118          **************************************************************/
3119
3120 static void TLan_EeSendStart( u16 io_base )
3121 {
3122         u16     sio;
3123
3124         outw( TLAN_NET_SIO, io_base + TLAN_DIO_ADR );
3125         sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3126
3127         TLan_SetBit( TLAN_NET_SIO_ECLOK, sio );
3128         TLan_SetBit( TLAN_NET_SIO_EDATA, sio );
3129         TLan_SetBit( TLAN_NET_SIO_ETXEN, sio );
3130         TLan_ClearBit( TLAN_NET_SIO_EDATA, sio );
3131         TLan_ClearBit( TLAN_NET_SIO_ECLOK, sio );
3132
3133 } /* TLan_EeSendStart */
3134
3135
3136
3137
3138         /***************************************************************
3139          *      TLan_EeSendByte
3140          *
3141          *      Returns:
3142          *              If the correct ack was received, 0, otherwise 1
3143          *      Parms:  io_base         The IO port base address for the
3144          *                              TLAN device with the EEPROM to
3145          *                              use.
3146          *              data            The 8 bits of information to
3147          *                              send to the EEPROM.
3148          *              stop            If TLAN_EEPROM_STOP is passed, a
3149          *                              stop cycle is sent after the
3150          *                              byte is sent after the ack is
3151          *                              read.
3152          *
3153          *      This function sends a byte on the serial EEPROM line,
3154          *      driving the clock to send each bit. The function then
3155          *      reverses transmission direction and reads an acknowledge
3156          *      bit.
3157          *
3158          **************************************************************/
3159
3160 static int TLan_EeSendByte( u16 io_base, u8 data, int stop )
3161 {
3162         int     err;
3163         u8      place;
3164         u16     sio;
3165
3166         outw( TLAN_NET_SIO, io_base + TLAN_DIO_ADR );
3167         sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3168
3169         /* Assume clock is low, tx is enabled; */
3170         for ( place = 0x80; place != 0; place >>= 1 ) {
3171                 if ( place & data )
3172                         TLan_SetBit( TLAN_NET_SIO_EDATA, sio );
3173                 else
3174                         TLan_ClearBit( TLAN_NET_SIO_EDATA, sio );
3175                 TLan_SetBit( TLAN_NET_SIO_ECLOK, sio );
3176                 TLan_ClearBit( TLAN_NET_SIO_ECLOK, sio );
3177         }
3178         TLan_ClearBit( TLAN_NET_SIO_ETXEN, sio );
3179         TLan_SetBit( TLAN_NET_SIO_ECLOK, sio );
3180         err = TLan_GetBit( TLAN_NET_SIO_EDATA, sio );
3181         TLan_ClearBit( TLAN_NET_SIO_ECLOK, sio );
3182         TLan_SetBit( TLAN_NET_SIO_ETXEN, sio );
3183
3184         if ( ( ! err ) && stop ) {
3185                 /* STOP, raise data while clock is high */
3186                 TLan_ClearBit( TLAN_NET_SIO_EDATA, sio );
3187                 TLan_SetBit( TLAN_NET_SIO_ECLOK, sio );
3188                 TLan_SetBit( TLAN_NET_SIO_EDATA, sio );
3189         }
3190
3191         return ( err );
3192
3193 } /* TLan_EeSendByte */
3194
3195
3196
3197
3198         /***************************************************************
3199          *      TLan_EeReceiveByte
3200          *
3201          *      Returns:
3202          *              Nothing
3203          *      Parms:
3204          *              io_base         The IO port base address for the
3205          *                              TLAN device with the EEPROM to
3206          *                              use.
3207          *              data            An address to a char to hold the
3208          *                              data sent from the EEPROM.
3209          *              stop            If TLAN_EEPROM_STOP is passed, a
3210          *                              stop cycle is sent after the
3211          *                              byte is received, and no ack is
3212          *                              sent.
3213          *
3214          *      This function receives 8 bits of data from the EEPROM
3215          *      over the serial link.  It then sends and ack bit, or no
3216          *      ack and a stop bit.  This function is used to retrieve
3217          *      data after the address of a byte in the EEPROM has been
3218          *      sent.
3219          *
3220          **************************************************************/
3221
3222 static void TLan_EeReceiveByte( u16 io_base, u8 *data, int stop )
3223 {
3224         u8  place;
3225         u16 sio;
3226
3227         outw( TLAN_NET_SIO, io_base + TLAN_DIO_ADR );
3228         sio = io_base + TLAN_DIO_DATA + TLAN_NET_SIO;
3229         *data = 0;
3230
3231         /* Assume clock is low, tx is enabled; */
3232         TLan_ClearBit( TLAN_NET_SIO_ETXEN, sio );
3233         for ( place = 0x80; place; place >>= 1 ) {
3234                 TLan_SetBit( TLAN_NET_SIO_ECLOK, sio );
3235                 if ( TLan_GetBit( TLAN_NET_SIO_EDATA, sio ) )
3236                         *data |= place;
3237                 TLan_ClearBit( TLAN_NET_SIO_ECLOK, sio );
3238         }
3239
3240         TLan_SetBit( TLAN_NET_SIO_ETXEN, sio );
3241         if ( ! stop ) {
3242                 TLan_ClearBit( TLAN_NET_SIO_EDATA, sio );       /* Ack = 0 */
3243                 TLan_SetBit( TLAN_NET_SIO_ECLOK, sio );
3244                 TLan_ClearBit( TLAN_NET_SIO_ECLOK, sio );
3245         } else {
3246                 TLan_SetBit( TLAN_NET_SIO_EDATA, sio );         /* No ack = 1 (?) */
3247                 TLan_SetBit( TLAN_NET_SIO_ECLOK, sio );
3248                 TLan_ClearBit( TLAN_NET_SIO_ECLOK, sio );
3249                 /* STOP, raise data while clock is high */
3250                 TLan_ClearBit( TLAN_NET_SIO_EDATA, sio );
3251                 TLan_SetBit( TLAN_NET_SIO_ECLOK, sio );
3252                 TLan_SetBit( TLAN_NET_SIO_EDATA, sio );
3253         }
3254
3255 } /* TLan_EeReceiveByte */
3256
3257
3258
3259
3260         /***************************************************************
3261          *      TLan_EeReadByte
3262          *
3263          *      Returns:
3264          *              No error = 0, else, the stage at which the error
3265          *              occurred.
3266          *      Parms:
3267          *              io_base         The IO port base address for the
3268          *                              TLAN device with the EEPROM to
3269          *                              use.
3270          *              ee_addr         The address of the byte in the
3271          *                              EEPROM whose contents are to be
3272          *                              retrieved.
3273          *              data            An address to a char to hold the
3274          *                              data obtained from the EEPROM.
3275          *
3276          *      This function reads a byte of information from an byte
3277          *      cell in the EEPROM.
3278          *
3279          **************************************************************/
3280
3281 static int TLan_EeReadByte( struct net_device *dev, u8 ee_addr, u8 *data )
3282 {
3283         int err;
3284         TLanPrivateInfo *priv = netdev_priv(dev);
3285         unsigned long flags = 0;
3286         int ret=0;
3287
3288         spin_lock_irqsave(&priv->lock, flags);
3289
3290         TLan_EeSendStart( dev->base_addr );
3291         err = TLan_EeSendByte( dev->base_addr, 0xA0, TLAN_EEPROM_ACK );
3292         if (err)
3293         {
3294                 ret=1;
3295                 goto fail;
3296         }
3297         err = TLan_EeSendByte( dev->base_addr, ee_addr, TLAN_EEPROM_ACK );
3298         if (err)
3299         {
3300                 ret=2;
3301                 goto fail;
3302         }
3303         TLan_EeSendStart( dev->base_addr );
3304         err = TLan_EeSendByte( dev->base_addr, 0xA1, TLAN_EEPROM_ACK );
3305         if (err)
3306         {
3307                 ret=3;
3308                 goto fail;
3309         }
3310         TLan_EeReceiveByte( dev->base_addr, data, TLAN_EEPROM_STOP );
3311 fail:
3312         spin_unlock_irqrestore(&priv->lock, flags);
3313
3314         return ret;
3315
3316 } /* TLan_EeReadByte */
3317
3318
3319