1 /* [xirc2ps_cs.c wk 03.11.99] (1.40 1999/11/18 00:06:03)
2 * Xircom CreditCard Ethernet Adapter IIps driver
3 * Xircom Realport 10/100 (RE-100) driver
4 *
5 * This driver supports various Xircom CreditCard Ethernet adapters
6 * including the CE2, CE IIps, RE-10, CEM28, CEM33, CE33, CEM56,
7 * CE3-100, CE3B, RE-100, REM10BT, and REM56G-100.
8 *
9 * 2000-09-24 <psheer@icon.co.za> The Xircom CE3B-100 may not
10 * autodetect the media properly. In this case use the
11 * if_port=1 (for 10BaseT) or if_port=4 (for 100BaseT) options
12 * to force the media type.
13 *
14 * Written originally by Werner Koch based on David Hinds' skeleton of the
15 * PCMCIA driver.
16 *
17 * Copyright (c) 1997,1998 Werner Koch (dd9jn)
18 *
19 * This driver is free software; you can redistribute it and/or modify
20 * it under the terms of the GNU General Public License as published by
21 * the Free Software Foundation; either version 2 of the License, or
22 * (at your option) any later version.
23 *
24 * It is distributed in the hope that it will be useful,
25 * but WITHOUT ANY WARRANTY; without even the implied warranty of
26 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
27 * GNU General Public License for more details.
28 *
29 * You should have received a copy of the GNU General Public License
30 * along with this program; if not, write to the Free Software
31 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
32 *
33 *
34 * ALTERNATIVELY, this driver may be distributed under the terms of
35 * the following license, in which case the provisions of this license
36 * are required INSTEAD OF the GNU General Public License. (This clause
37 * is necessary due to a potential bad interaction between the GPL and
38 * the restrictions contained in a BSD-style copyright.)
39 *
40 * Redistribution and use in source and binary forms, with or without
41 * modification, are permitted provided that the following conditions
42 * are met:
43 * 1. Redistributions of source code must retain the above copyright
44 * notice, and the entire permission notice in its entirety,
45 * including the disclaimer of warranties.
46 * 2. Redistributions in binary form must reproduce the above copyright
47 * notice, this list of conditions and the following disclaimer in the
48 * documentation and/or other materials provided with the distribution.
49 * 3. The name of the author may not be used to endorse or promote
50 * products derived from this software without specific prior
51 * written permission.
52 *
53 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
54 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
55 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
56 * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
57 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
58 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
59 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
60 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
61 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
62 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
63 * OF THE POSSIBILITY OF SUCH DAMAGE.
64 */
65
66 #include <linux/module.h>
67 #include <linux/kernel.h>
68 #include <linux/init.h>
69 #include <linux/sched.h>
70 #include <linux/ptrace.h>
71 #include <linux/slab.h>
72 #include <linux/string.h>
73 #include <linux/timer.h>
74 #include <linux/interrupt.h>
75 #include <linux/in.h>
76 #include <linux/delay.h>
77 #include <linux/ethtool.h>
78 #include <asm/io.h>
79 #include <asm/system.h>
80 #include <asm/bitops.h>
81 #include <asm/uaccess.h>
82
83 #include <linux/netdevice.h>
84 #include <linux/etherdevice.h>
85 #include <linux/skbuff.h>
86 #include <linux/if_arp.h>
87 #include <linux/ioport.h>
88
89 #include <pcmcia/version.h>
90 #include <pcmcia/cs_types.h>
91 #include <pcmcia/cs.h>
92 #include <pcmcia/cistpl.h>
93 #include <pcmcia/cisreg.h>
94 #include <pcmcia/ciscode.h>
95
96 #ifndef MANFID_COMPAQ
97 #define MANFID_COMPAQ 0x0138
98 #define MANFID_COMPAQ2 0x0183 /* is this correct? */
99 #endif
100
101 #include <pcmcia/ds.h>
102
103 /* Time in jiffies before concluding Tx hung */
104 #define TX_TIMEOUT ((400*HZ)/1000)
105
106 /****************
107 * Some constants used to access the hardware
108 */
109
110 /* Register offsets and value constans */
111 #define XIRCREG_CR 0 /* Command register (wr) */
112 enum xirc_cr {
113 TransmitPacket = 0x01,
114 SoftReset = 0x02,
115 EnableIntr = 0x04,
116 ForceIntr = 0x08,
117 ClearTxFIFO = 0x10,
118 ClearRxOvrun = 0x20,
119 RestartTx = 0x40
120 };
121 #define XIRCREG_ESR 0 /* Ethernet status register (rd) */
122 enum xirc_esr {
123 FullPktRcvd = 0x01, /* full packet in receive buffer */
124 PktRejected = 0x04, /* a packet has been rejected */
125 TxPktPend = 0x08, /* TX Packet Pending */
126 IncorPolarity = 0x10,
127 MediaSelect = 0x20 /* set if TP, clear if AUI */
128 };
129 #define XIRCREG_PR 1 /* Page Register select */
130 #define XIRCREG_EDP 4 /* Ethernet Data Port Register */
131 #define XIRCREG_ISR 6 /* Ethernet Interrupt Status Register */
132 enum xirc_isr {
133 TxBufOvr = 0x01, /* TX Buffer Overflow */
134 PktTxed = 0x02, /* Packet Transmitted */
135 MACIntr = 0x04, /* MAC Interrupt occurred */
136 TxResGrant = 0x08, /* Tx Reservation Granted */
137 RxFullPkt = 0x20, /* Rx Full Packet */
138 RxPktRej = 0x40, /* Rx Packet Rejected */
139 ForcedIntr= 0x80 /* Forced Interrupt */
140 };
141 #define XIRCREG1_IMR0 12 /* Ethernet Interrupt Mask Register (on page 1)*/
142 #define XIRCREG1_IMR1 13
143 #define XIRCREG0_TSO 8 /* Transmit Space Open Register (on page 0)*/
144 #define XIRCREG0_TRS 10 /* Transmit reservation Size Register (page 0)*/
145 #define XIRCREG0_DO 12 /* Data Offset Register (page 0) (wr) */
146 #define XIRCREG0_RSR 12 /* Receive Status Register (page 0) (rd) */
147 enum xirc_rsr {
148 PhyPkt = 0x01, /* set:physical packet, clear: multicast packet */
149 BrdcstPkt = 0x02, /* set if it is a broadcast packet */
150 PktTooLong = 0x04, /* set if packet length > 1518 */
151 AlignErr = 0x10, /* incorrect CRC and last octet not complete */
152 CRCErr = 0x20, /* incorrect CRC and last octet is complete */
153 PktRxOk = 0x80 /* received ok */
154 };
155 #define XIRCREG0_PTR 13 /* packets transmitted register (rd) */
156 #define XIRCREG0_RBC 14 /* receive byte count regsister (rd) */
157 #define XIRCREG1_ECR 14 /* ethernet configurationn register */
158 enum xirc_ecr {
159 FullDuplex = 0x04, /* enable full duplex mode */
160 LongTPMode = 0x08, /* adjust for longer lengths of TP cable */
161 DisablePolCor = 0x10,/* disable auto polarity correction */
162 DisableLinkPulse = 0x20, /* disable link pulse generation */
163 DisableAutoTx = 0x40, /* disable auto-transmit */
164 };
165 #define XIRCREG2_RBS 8 /* receive buffer start register */
166 #define XIRCREG2_LED 10 /* LED Configuration register */
167 /* values for the leds: Bits 2-0 for led 1
168 * 0 disabled Bits 5-3 for led 2
169 * 1 collision
170 * 2 noncollision
171 * 3 link_detected
172 * 4 incor_polarity
173 * 5 jabber
174 * 6 auto_assertion
175 * 7 rx_tx_activity
176 */
177 #define XIRCREG2_MSR 12 /* Mohawk specific register */
178
179 #define XIRCREG4_GPR0 8 /* General Purpose Register 0 */
180 #define XIRCREG4_GPR1 9 /* General Purpose Register 1 */
181 #define XIRCREG2_GPR2 13 /* General Purpose Register 2 (page2!)*/
182 #define XIRCREG4_BOV 10 /* Bonding Version Register */
183 #define XIRCREG4_LMA 12 /* Local Memory Address Register */
184 #define XIRCREG4_LMD 14 /* Local Memory Data Port */
185 /* MAC register can only by accessed with 8 bit operations */
186 #define XIRCREG40_CMD0 8 /* Command Register (wr) */
187 enum xirc_cmd { /* Commands */
188 Transmit = 0x01,
189 EnableRecv = 0x04,
190 DisableRecv = 0x08,
191 Abort = 0x10,
192 Online = 0x20,
193 IntrAck = 0x40,
194 Offline = 0x80
195 };
196 #define XIRCREG5_RHSA0 10 /* Rx Host Start Address */
197 #define XIRCREG40_RXST0 9 /* Receive Status Register */
198 #define XIRCREG40_TXST0 11 /* Transmit Status Register 0 */
199 #define XIRCREG40_TXST1 12 /* Transmit Status Register 10 */
200 #define XIRCREG40_RMASK0 13 /* Receive Mask Register */
201 #define XIRCREG40_TMASK0 14 /* Transmit Mask Register 0 */
202 #define XIRCREG40_TMASK1 15 /* Transmit Mask Register 0 */
203 #define XIRCREG42_SWC0 8 /* Software Configuration 0 */
204 #define XIRCREG42_SWC1 9 /* Software Configuration 1 */
205 #define XIRCREG42_BOC 10 /* Back-Off Configuration */
206 #define XIRCREG44_TDR0 8 /* Time Domain Reflectometry 0 */
207 #define XIRCREG44_TDR1 9 /* Time Domain Reflectometry 1 */
208 #define XIRCREG44_RXBC_LO 10 /* Rx Byte Count 0 (rd) */
209 #define XIRCREG44_RXBC_HI 11 /* Rx Byte Count 1 (rd) */
210 #define XIRCREG45_REV 15 /* Revision Register (rd) */
211 #define XIRCREG50_IA 8 /* Individual Address (8-13) */
212
213 static char *if_names[] = { "Auto", "10BaseT", "10Base2", "AUI", "100BaseT" };
214
215 /****************
216 * All the PCMCIA modules use PCMCIA_DEBUG to control debugging. If
217 * you do not define PCMCIA_DEBUG at all, all the debug code will be
218 * left out. If you compile with PCMCIA_DEBUG=0, the debug code will
219 * be present but disabled -- but it can then be enabled for specific
220 * modules at load time with a 'pc_debug=#' option to insmod.
221 */
222 #ifdef PCMCIA_DEBUG
223 static int pc_debug = PCMCIA_DEBUG;
224 MODULE_PARM(pc_debug, "i");
225 #define DEBUG(n, args...) if (pc_debug>(n)) printk(KDBG_XIRC args)
226 #else
227 #define DEBUG(n, args...)
228 #endif
229 static char *version =
230 "xirc2ps_cs.c 1.31 1998/12/09 19:32:55 (dd9jn+kvh)";
231 /* !--- CVS revision */
232 #define KDBG_XIRC KERN_DEBUG "xirc2ps_cs: "
233 #define KERR_XIRC KERN_ERR "xirc2ps_cs: "
234 #define KWRN_XIRC KERN_WARNING "xirc2ps_cs: "
235 #define KNOT_XIRC KERN_NOTICE "xirc2ps_cs: "
236 #define KINF_XIRC KERN_INFO "xirc2ps_cs: "
237
238 /* card types */
239 #define XIR_UNKNOWN 0 /* unknown: not supported */
240 #define XIR_CE 1 /* (prodid 1) different hardware: not supported */
241 #define XIR_CE2 2 /* (prodid 2) */
242 #define XIR_CE3 3 /* (prodid 3) */
243 #define XIR_CEM 4 /* (prodid 1) different hardware: not supported */
244 #define XIR_CEM2 5 /* (prodid 2) */
245 #define XIR_CEM3 6 /* (prodid 3) */
246 #define XIR_CEM33 7 /* (prodid 4) */
247 #define XIR_CEM56M 8 /* (prodid 5) */
248 #define XIR_CEM56 9 /* (prodid 6) */
249 #define XIR_CM28 10 /* (prodid 3) modem only: not supported here */
250 #define XIR_CM33 11 /* (prodid 4) modem only: not supported here */
251 #define XIR_CM56 12 /* (prodid 5) modem only: not supported here */
252 #define XIR_CG 13 /* (prodid 1) GSM modem only: not supported */
253 #define XIR_CBE 14 /* (prodid 1) cardbus ethernet: not supported */
254 /*====================================================================*/
255
256 /* Module parameters */
257
258 MODULE_DESCRIPTION("Xircom PCMCIA ethernet driver");
259 MODULE_LICENSE("Dual MPL/GPL");
260
261 #define INT_MODULE_PARM(n, v) static int n = v; MODULE_PARM(n, "i")
262
263 static int irq_list[4] = { -1 };
264 MODULE_PARM(irq_list, "1-4i");
265 INT_MODULE_PARM(irq_mask, 0xdeb8);
266 INT_MODULE_PARM(if_port, 0);
267 INT_MODULE_PARM(full_duplex, 0);
268 INT_MODULE_PARM(do_sound, 1);
269 INT_MODULE_PARM(lockup_hack, 0); /* anti lockup hack */
270
271 /*====================================================================*/
272
273 /* We do not process more than these number of bytes during one
274 * interrupt. (Of course we receive complete packets, so this is not
275 * an exact value).
276 * Something between 2000..22000; first value gives best interrupt latency,
277 * the second enables the usage of the complete on-chip buffer. We use the
278 * high value as the initial value.
279 */
280 static unsigned maxrx_bytes = 22000;
281
282 /* MII management prototypes */
283 static void mii_idle(ioaddr_t ioaddr);
284 static void mii_putbit(ioaddr_t ioaddr, unsigned data);
285 static int mii_getbit(ioaddr_t ioaddr);
286 static void mii_wbits(ioaddr_t ioaddr, unsigned data, int len);
287 static unsigned mii_rd(ioaddr_t ioaddr, u_char phyaddr, u_char phyreg);
288 static void mii_wr(ioaddr_t ioaddr, u_char phyaddr, u_char phyreg,
289 unsigned data, int len);
290
291 /*
292 * The event() function is this driver's Card Services event handler.
293 * It will be called by Card Services when an appropriate card status
294 * event is received. The config() and release() entry points are
295 * used to configure or release a socket, in response to card insertion
296 * and ejection events. They are invoked from the event handler.
297 */
298
299 static int has_ce2_string(dev_link_t * link);
300 static void xirc2ps_config(dev_link_t * link);
301 static void xirc2ps_release(u_long arg);
302 static int xirc2ps_event(event_t event, int priority,
303 event_callback_args_t * args);
304
305 /****************
306 * The attach() and detach() entry points are used to create and destroy
307 * "instances" of the driver, where each instance represents everything
308 * needed to manage one actual PCMCIA card.
309 */
310
311 static dev_link_t *xirc2ps_attach(void);
312 static void xirc2ps_detach(dev_link_t *);
313
314 /****************
315 * You'll also need to prototype all the functions that will actually
316 * be used to talk to your device. See 'pcmem_cs' for a good example
317 * of a fully self-sufficient driver; the other drivers rely more or
318 * less on other parts of the kernel.
319 */
320
321 static void xirc2ps_interrupt(int irq, void *dev_id, struct pt_regs *regs);
322
323 /*
324 * The dev_info variable is the "key" that is used to match up this
325 * device driver with appropriate cards, through the card configuration
326 * database.
327 */
328
329 static dev_info_t dev_info = "xirc2ps_cs";
330
331 /****************
332 * A linked list of "instances" of the device. Each actual
333 * PCMCIA card corresponds to one device instance, and is described
334 * by one dev_link_t structure (defined in ds.h).
335 *
336 * You may not want to use a linked list for this -- for example, the
337 * memory card driver uses an array of dev_link_t pointers, where minor
338 * device numbers are used to derive the corresponding array index.
339 */
340
341 static dev_link_t *dev_list;
342
343 /****************
344 * A dev_link_t structure has fields for most things that are needed
345 * to keep track of a socket, but there will usually be some device
346 * specific information that also needs to be kept track of. The
347 * 'priv' pointer in a dev_link_t structure can be used to point to
348 * a device-specific private data structure, like this.
349 *
350 * A driver needs to provide a dev_node_t structure for each device
351 * on a card. In some cases, there is only one device per card (for
352 * example, ethernet cards, modems). In other cases, there may be
353 * many actual or logical devices (SCSI adapters, memory cards with
354 * multiple partitions). The dev_node_t structures need to be kept
355 * in a linked list starting at the 'dev' field of a dev_link_t
356 * structure. We allocate them in the card's private data structure,
357 * because they generally can't be allocated dynamically.
358 */
359
360 typedef struct local_info_t {
361 dev_link_t link;
362 struct net_device dev;
363 dev_node_t node;
364 struct net_device_stats stats;
365 int card_type;
366 int probe_port;
367 int silicon; /* silicon revision. 0=old CE2, 1=Scipper, 4=Mohawk */
368 int mohawk; /* a CE3 type card */
369 int dingo; /* a CEM56 type card */
370 int new_mii; /* has full 10baseT/100baseT MII */
371 int modem; /* is a multi function card (i.e with a modem) */
372 caddr_t dingo_ccr; /* only used for CEM56 cards */
373 unsigned last_ptr_value; /* last packets transmitted value */
374 const char *manf_str;
375 } local_info_t;
376
377 /****************
378 * Some more prototypes
379 */
380 static int do_start_xmit(struct sk_buff *skb, struct net_device *dev);
381 static void do_tx_timeout(struct net_device *dev);
382 static struct net_device_stats *do_get_stats(struct net_device *dev);
383 static void set_addresses(struct net_device *dev);
384 static void set_multicast_list(struct net_device *dev);
385 static int set_card_type(dev_link_t *link, const void *s);
386 static int do_config(struct net_device *dev, struct ifmap *map);
387 static int do_open(struct net_device *dev);
388 static int do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
389 static struct ethtool_ops netdev_ethtool_ops;
390 static void hardreset(struct net_device *dev);
391 static void do_reset(struct net_device *dev, int full);
392 static int init_mii(struct net_device *dev);
393 static void do_powerdown(struct net_device *dev);
394 static int do_stop(struct net_device *dev);
395
396 /*=============== Helper functions =========================*/
397 static void
flush_stale_links(void)398 flush_stale_links(void)
399 {
400 dev_link_t *link, *next;
401 for (link = dev_list; link; link = next) {
402 next = link->next;
403 if (link->state & DEV_STALE_LINK)
404 xirc2ps_detach(link);
405 }
406 }
407
408 static void
cs_error(client_handle_t handle,int func,int ret)409 cs_error(client_handle_t handle, int func, int ret)
410 {
411 error_info_t err = { func, ret };
412 CardServices(ReportError, handle, &err);
413 }
414
415 static int
get_tuple_data(int fn,client_handle_t handle,tuple_t * tuple)416 get_tuple_data(int fn, client_handle_t handle, tuple_t *tuple)
417 {
418 int err;
419
420 if ((err=CardServices(fn, handle, tuple)))
421 return err;
422 return CardServices(GetTupleData, handle, tuple);
423 }
424
425 static int
get_tuple(int fn,client_handle_t handle,tuple_t * tuple,cisparse_t * parse)426 get_tuple(int fn, client_handle_t handle, tuple_t *tuple, cisparse_t *parse)
427 {
428 int err;
429
430 if ((err=get_tuple_data(fn, handle, tuple)))
431 return err;
432 return CardServices(ParseTuple, handle, tuple, parse);
433 }
434
435 #define first_tuple(a, b, c) get_tuple(GetFirstTuple, a, b, c)
436 #define next_tuple(a, b, c) get_tuple(GetNextTuple, a, b, c)
437
438 #define SelectPage(pgnr) outb((pgnr), ioaddr + XIRCREG_PR)
439 #define GetByte(reg) ((unsigned)inb(ioaddr + (reg)))
440 #define GetWord(reg) ((unsigned)inw(ioaddr + (reg)))
441 #define PutByte(reg,value) outb((value), ioaddr+(reg))
442 #define PutWord(reg,value) outw((value), ioaddr+(reg))
443
444 static void
busy_loop(u_long len)445 busy_loop(u_long len)
446 {
447 if (in_interrupt()) {
448 u_long timeout = jiffies + len;
449 u_long flags;
450 save_flags(flags);
451 sti();
452 while (timeout >= jiffies)
453 ;
454 restore_flags(flags);
455 } else {
456 __set_current_state(TASK_UNINTERRUPTIBLE);
457 schedule_timeout(len);
458 }
459 }
460
461 /*====== Functions used for debugging =================================*/
462 #if defined(PCMCIA_DEBUG) && 0 /* reading regs may change system status */
463 static void
PrintRegisters(struct net_device * dev)464 PrintRegisters(struct net_device *dev)
465 {
466 ioaddr_t ioaddr = dev->base_addr;
467
468 if (pc_debug > 1) {
469 int i, page;
470
471 printk(KDBG_XIRC "Register common: ");
472 for (i = 0; i < 8; i++)
473 printk(" %2.2x", GetByte(i));
474 printk("\n");
475 for (page = 0; page <= 8; page++) {
476 printk(KDBG_XIRC "Register page %2x: ", page);
477 SelectPage(page);
478 for (i = 8; i < 16; i++)
479 printk(" %2.2x", GetByte(i));
480 printk("\n");
481 }
482 for (page=0x40 ; page <= 0x5f; page++) {
483 if (page == 0x43 || (page >= 0x46 && page <= 0x4f)
484 || (page >= 0x51 && page <=0x5e))
485 continue;
486 printk(KDBG_XIRC "Register page %2x: ", page);
487 SelectPage(page);
488 for (i = 8; i < 16; i++)
489 printk(" %2.2x", GetByte(i));
490 printk("\n");
491 }
492 }
493 }
494 #endif /* PCMCIA_DEBUG */
495
496 /*============== MII Management functions ===============*/
497
498 /****************
499 * Turn around for read
500 */
501 static void
mii_idle(ioaddr_t ioaddr)502 mii_idle(ioaddr_t ioaddr)
503 {
504 PutByte(XIRCREG2_GPR2, 0x04|0); /* drive MDCK low */
505 udelay(1);
506 PutByte(XIRCREG2_GPR2, 0x04|1); /* and drive MDCK high */
507 udelay(1);
508 }
509
510 /****************
511 * Write a bit to MDI/O
512 */
513 static void
mii_putbit(ioaddr_t ioaddr,unsigned data)514 mii_putbit(ioaddr_t ioaddr, unsigned data)
515 {
516 #if 1
517 if (data) {
518 PutByte(XIRCREG2_GPR2, 0x0c|2|0); /* set MDIO */
519 udelay(1);
520 PutByte(XIRCREG2_GPR2, 0x0c|2|1); /* and drive MDCK high */
521 udelay(1);
522 } else {
523 PutByte(XIRCREG2_GPR2, 0x0c|0|0); /* clear MDIO */
524 udelay(1);
525 PutByte(XIRCREG2_GPR2, 0x0c|0|1); /* and drive MDCK high */
526 udelay(1);
527 }
528 #else
529 if (data) {
530 PutWord(XIRCREG2_GPR2-1, 0x0e0e);
531 udelay(1);
532 PutWord(XIRCREG2_GPR2-1, 0x0f0f);
533 udelay(1);
534 } else {
535 PutWord(XIRCREG2_GPR2-1, 0x0c0c);
536 udelay(1);
537 PutWord(XIRCREG2_GPR2-1, 0x0d0d);
538 udelay(1);
539 }
540 #endif
541 }
542
543 /****************
544 * Get a bit from MDI/O
545 */
546 static int
mii_getbit(ioaddr_t ioaddr)547 mii_getbit(ioaddr_t ioaddr)
548 {
549 unsigned d;
550
551 PutByte(XIRCREG2_GPR2, 4|0); /* drive MDCK low */
552 udelay(1);
553 d = GetByte(XIRCREG2_GPR2); /* read MDIO */
554 PutByte(XIRCREG2_GPR2, 4|1); /* drive MDCK high again */
555 udelay(1);
556 return d & 0x20; /* read MDIO */
557 }
558
559 static void
mii_wbits(ioaddr_t ioaddr,unsigned data,int len)560 mii_wbits(ioaddr_t ioaddr, unsigned data, int len)
561 {
562 unsigned m = 1 << (len-1);
563 for (; m; m >>= 1)
564 mii_putbit(ioaddr, data & m);
565 }
566
567 static unsigned
mii_rd(ioaddr_t ioaddr,u_char phyaddr,u_char phyreg)568 mii_rd(ioaddr_t ioaddr, u_char phyaddr, u_char phyreg)
569 {
570 int i;
571 unsigned data=0, m;
572
573 SelectPage(2);
574 for (i=0; i < 32; i++) /* 32 bit preamble */
575 mii_putbit(ioaddr, 1);
576 mii_wbits(ioaddr, 0x06, 4); /* Start and opcode for read */
577 mii_wbits(ioaddr, phyaddr, 5); /* PHY address to be accessed */
578 mii_wbits(ioaddr, phyreg, 5); /* PHY register to read */
579 mii_idle(ioaddr); /* turn around */
580 mii_getbit(ioaddr);
581
582 for (m = 1<<15; m; m >>= 1)
583 if (mii_getbit(ioaddr))
584 data |= m;
585 mii_idle(ioaddr);
586 return data;
587 }
588
589 static void
mii_wr(ioaddr_t ioaddr,u_char phyaddr,u_char phyreg,unsigned data,int len)590 mii_wr(ioaddr_t ioaddr, u_char phyaddr, u_char phyreg, unsigned data, int len)
591 {
592 int i;
593
594 SelectPage(2);
595 for (i=0; i < 32; i++) /* 32 bit preamble */
596 mii_putbit(ioaddr, 1);
597 mii_wbits(ioaddr, 0x05, 4); /* Start and opcode for write */
598 mii_wbits(ioaddr, phyaddr, 5); /* PHY address to be accessed */
599 mii_wbits(ioaddr, phyreg, 5); /* PHY Register to write */
600 mii_putbit(ioaddr, 1); /* turn around */
601 mii_putbit(ioaddr, 0);
602 mii_wbits(ioaddr, data, len); /* And write the data */
603 mii_idle(ioaddr);
604 }
605
606 /*============= Main bulk of functions =========================*/
607
608 /****************
609 * xirc2ps_attach() creates an "instance" of the driver, allocating
610 * local data structures for one device. The device is registered
611 * with Card Services.
612 *
613 * The dev_link structure is initialized, but we don't actually
614 * configure the card at this point -- we wait until we receive a
615 * card insertion event.
616 */
617
618 static dev_link_t *
xirc2ps_attach(void)619 xirc2ps_attach(void)
620 {
621 client_reg_t client_reg;
622 dev_link_t *link;
623 struct net_device *dev;
624 local_info_t *local;
625 int err;
626
627 DEBUG(0, "attach()\n");
628 flush_stale_links();
629
630 /* Allocate the device structure */
631 local = kmalloc(sizeof(*local), GFP_KERNEL);
632 if (!local) return NULL;
633 memset(local, 0, sizeof(*local));
634 link = &local->link; dev = &local->dev;
635 link->priv = dev->priv = local;
636
637 link->release.function = &xirc2ps_release;
638 link->release.data = (u_long) link;
639
640 /* General socket configuration */
641 link->conf.Attributes = CONF_ENABLE_IRQ;
642 link->conf.Vcc = 50;
643 link->conf.IntType = INT_MEMORY_AND_IO;
644 link->conf.ConfigIndex = 1;
645 link->conf.Present = PRESENT_OPTION;
646 link->irq.Handler = xirc2ps_interrupt;
647 link->irq.Instance = dev;
648
649 /* Fill in card specific entries */
650 dev->hard_start_xmit = &do_start_xmit;
651 dev->set_config = &do_config;
652 dev->get_stats = &do_get_stats;
653 dev->do_ioctl = &do_ioctl;
654 SET_ETHTOOL_OPS(dev, &netdev_ethtool_ops);
655 dev->set_multicast_list = &set_multicast_list;
656 ether_setup(dev);
657 dev->open = &do_open;
658 dev->stop = &do_stop;
659 #ifdef HAVE_TX_TIMEOUT
660 dev->tx_timeout = do_tx_timeout;
661 dev->watchdog_timeo = TX_TIMEOUT;
662 #endif
663
664 /* Register with Card Services */
665 link->next = dev_list;
666 dev_list = link;
667 client_reg.dev_info = &dev_info;
668 client_reg.Attributes = INFO_IO_CLIENT | INFO_CARD_SHARE;
669 client_reg.EventMask =
670 CS_EVENT_CARD_INSERTION | CS_EVENT_CARD_REMOVAL |
671 CS_EVENT_RESET_PHYSICAL | CS_EVENT_CARD_RESET |
672 CS_EVENT_PM_SUSPEND | CS_EVENT_PM_RESUME;
673 client_reg.event_handler = &xirc2ps_event;
674 client_reg.Version = 0x0210;
675 client_reg.event_callback_args.client_data = link;
676 if ((err = CardServices(RegisterClient, &link->handle, &client_reg))) {
677 cs_error(link->handle, RegisterClient, err);
678 xirc2ps_detach(link);
679 return NULL;
680 }
681
682 return link;
683 } /* xirc2ps_attach */
684
685 /****************
686 * This deletes a driver "instance". The device is de-registered
687 * with Card Services. If it has been released, all local data
688 * structures are freed. Otherwise, the structures will be freed
689 * when the device is released.
690 */
691
692 static void
xirc2ps_detach(dev_link_t * link)693 xirc2ps_detach(dev_link_t * link)
694 {
695 local_info_t *local = link->priv;
696 dev_link_t **linkp;
697
698 DEBUG(0, "detach(0x%p)\n", link);
699
700 /* Locate device structure */
701 for (linkp = &dev_list; *linkp; linkp = &(*linkp)->next)
702 if (*linkp == link)
703 break;
704 if (!*linkp) {
705 DEBUG(0, "detach(0x%p): dev_link lost\n", link);
706 return;
707 }
708
709 /*
710 * If the device is currently configured and active, we won't
711 * actually delete it yet. Instead, it is marked so that when
712 * the release() function is called, that will trigger a proper
713 * detach().
714 */
715 del_timer(&link->release);
716 if (link->state & DEV_CONFIG) {
717 DEBUG(0, "detach postponed, '%s' still locked\n",
718 link->dev->dev_name);
719 link->state |= DEV_STALE_LINK;
720 return;
721 }
722
723 /* Break the link with Card Services */
724 if (link->handle)
725 CardServices(DeregisterClient, link->handle);
726
727 /* Unlink device structure, free it */
728 *linkp = link->next;
729 if (link->dev)
730 unregister_netdev(&local->dev);
731 kfree(local);
732
733 } /* xirc2ps_detach */
734
735 /****************
736 * Detect the type of the card. s is the buffer with the data of tuple 0x20
737 * Returns: 0 := not supported
738 * mediaid=11 and prodid=47
739 * Media-Id bits:
740 * Ethernet 0x01
741 * Tokenring 0x02
742 * Arcnet 0x04
743 * Wireless 0x08
744 * Modem 0x10
745 * GSM only 0x20
746 * Prod-Id bits:
747 * Pocket 0x10
748 * External 0x20
749 * Creditcard 0x40
750 * Cardbus 0x80
751 *
752 */
753 static int
set_card_type(dev_link_t * link,const void * s)754 set_card_type(dev_link_t *link, const void *s)
755 {
756 local_info_t *local = link->priv;
757 #ifdef PCMCIA_DEBUG
758 unsigned cisrev = ((const unsigned char *)s)[2];
759 #endif
760 unsigned mediaid= ((const unsigned char *)s)[3];
761 unsigned prodid = ((const unsigned char *)s)[4];
762
763 DEBUG(0, "cisrev=%02x mediaid=%02x prodid=%02x\n",
764 cisrev, mediaid, prodid);
765
766 local->mohawk = 0;
767 local->dingo = 0;
768 local->modem = 0;
769 local->card_type = XIR_UNKNOWN;
770 if (!(prodid & 0x40)) {
771 printk(KNOT_XIRC "Ooops: Not a creditcard\n");
772 return 0;
773 }
774 if (!(mediaid & 0x01)) {
775 printk(KNOT_XIRC "Not an Ethernet card\n");
776 return 0;
777 }
778 if (mediaid & 0x10) {
779 local->modem = 1;
780 switch(prodid & 15) {
781 case 1: local->card_type = XIR_CEM ; break;
782 case 2: local->card_type = XIR_CEM2 ; break;
783 case 3: local->card_type = XIR_CEM3 ; break;
784 case 4: local->card_type = XIR_CEM33 ; break;
785 case 5: local->card_type = XIR_CEM56M;
786 local->mohawk = 1;
787 break;
788 case 6:
789 case 7: /* 7 is the RealPort 10/56 */
790 local->card_type = XIR_CEM56 ;
791 local->mohawk = 1;
792 local->dingo = 1;
793 break;
794 }
795 } else {
796 switch(prodid & 15) {
797 case 1: local->card_type = has_ce2_string(link)? XIR_CE2 : XIR_CE ;
798 break;
799 case 2: local->card_type = XIR_CE2; break;
800 case 3: local->card_type = XIR_CE3;
801 local->mohawk = 1;
802 break;
803 }
804 }
805 if (local->card_type == XIR_CE || local->card_type == XIR_CEM) {
806 printk(KNOT_XIRC "Sorry, this is an old CE card\n");
807 return 0;
808 }
809 if (local->card_type == XIR_UNKNOWN)
810 printk(KNOT_XIRC "unknown card (mediaid=%02x prodid=%02x)\n",
811 mediaid, prodid);
812
813 return 1;
814 }
815
816 /****************
817 * There are some CE2 cards out which claim to be a CE card.
818 * This function looks for a "CE2" in the 3rd version field.
819 * Returns: true if this is a CE2
820 */
821 static int
has_ce2_string(dev_link_t * link)822 has_ce2_string(dev_link_t * link)
823 {
824 client_handle_t handle = link->handle;
825 tuple_t tuple;
826 cisparse_t parse;
827 u_char buf[256];
828
829 tuple.Attributes = 0;
830 tuple.TupleData = buf;
831 tuple.TupleDataMax = 254;
832 tuple.TupleOffset = 0;
833 tuple.DesiredTuple = CISTPL_VERS_1;
834 if (!first_tuple(handle, &tuple, &parse) && parse.version_1.ns > 2) {
835 if (strstr(parse.version_1.str + parse.version_1.ofs[2], "CE2"))
836 return 1;
837 }
838 return 0;
839 }
840
841 /****************
842 * xirc2ps_config() is scheduled to run after a CARD_INSERTION event
843 * is received, to configure the PCMCIA socket, and to make the
844 * ethernet device available to the system.
845 */
846 static void
xirc2ps_config(dev_link_t * link)847 xirc2ps_config(dev_link_t * link)
848 {
849 client_handle_t handle = link->handle;
850 local_info_t *local = link->priv;
851 struct net_device *dev = &local->dev;
852 tuple_t tuple;
853 cisparse_t parse;
854 ioaddr_t ioaddr;
855 int err, i;
856 u_char buf[64];
857 cistpl_lan_node_id_t *node_id = (cistpl_lan_node_id_t*)parse.funce.data;
858 cistpl_cftable_entry_t *cf = &parse.cftable_entry;
859
860 local->dingo_ccr = 0;
861
862 DEBUG(0, "config(0x%p)\n", link);
863
864 /*
865 * This reads the card's CONFIG tuple to find its configuration
866 * registers.
867 */
868 tuple.Attributes = 0;
869 tuple.TupleData = buf;
870 tuple.TupleDataMax = 64;
871 tuple.TupleOffset = 0;
872
873 /* Is this a valid card */
874 tuple.DesiredTuple = CISTPL_MANFID;
875 if ((err=first_tuple(handle, &tuple, &parse))) {
876 printk(KNOT_XIRC "manfid not found in CIS\n");
877 goto failure;
878 }
879
880 switch(parse.manfid.manf) {
881 case MANFID_XIRCOM:
882 local->manf_str = "Xircom";
883 break;
884 case MANFID_ACCTON:
885 local->manf_str = "Accton";
886 break;
887 case MANFID_COMPAQ:
888 case MANFID_COMPAQ2:
889 local->manf_str = "Compaq";
890 break;
891 case MANFID_INTEL:
892 local->manf_str = "Intel";
893 break;
894 case MANFID_TOSHIBA:
895 local->manf_str = "Toshiba";
896 break;
897 default:
898 printk(KNOT_XIRC "Unknown Card Manufacturer ID: 0x%04x\n",
899 (unsigned)parse.manfid.manf);
900 goto failure;
901 }
902 DEBUG(0, "found %s card\n", local->manf_str);
903
904 if (!set_card_type(link, buf)) {
905 printk(KNOT_XIRC "this card is not supported\n");
906 goto failure;
907 }
908
909 /* get configuration stuff */
910 tuple.DesiredTuple = CISTPL_CONFIG;
911 if ((err=first_tuple(handle, &tuple, &parse)))
912 goto cis_error;
913 link->conf.ConfigBase = parse.config.base;
914 link->conf.Present = parse.config.rmask[0];
915
916 /* get the ethernet address from the CIS */
917 tuple.DesiredTuple = CISTPL_FUNCE;
918 for (err = first_tuple(handle, &tuple, &parse); !err;
919 err = next_tuple(handle, &tuple, &parse)) {
920 /* Once I saw two CISTPL_FUNCE_LAN_NODE_ID entries:
921 * the first one with a length of zero the second correct -
922 * so I skip all entries with length 0 */
923 if (parse.funce.type == CISTPL_FUNCE_LAN_NODE_ID
924 && ((cistpl_lan_node_id_t *)parse.funce.data)->nb)
925 break;
926 }
927 if (err) { /* not found: try to get the node-id from tuple 0x89 */
928 tuple.DesiredTuple = 0x89; /* data layout looks like tuple 0x22 */
929 if (!(err = get_tuple_data(GetFirstTuple, handle, &tuple))) {
930 if (tuple.TupleDataLen == 8 && *buf == CISTPL_FUNCE_LAN_NODE_ID)
931 memcpy(&parse, buf, 8);
932 else
933 err = -1;
934 }
935 }
936 if (err) { /* another try (James Lehmer's CE2 version 4.1)*/
937 tuple.DesiredTuple = CISTPL_FUNCE;
938 for (err = first_tuple(handle, &tuple, &parse); !err;
939 err = next_tuple(handle, &tuple, &parse)) {
940 if (parse.funce.type == 0x02 && parse.funce.data[0] == 1
941 && parse.funce.data[1] == 6 && tuple.TupleDataLen == 13) {
942 buf[1] = 4;
943 memcpy(&parse, buf+1, 8);
944 break;
945 }
946 }
947 }
948 if (err) {
949 printk(KNOT_XIRC "node-id not found in CIS\n");
950 goto failure;
951 }
952 node_id = (cistpl_lan_node_id_t *)parse.funce.data;
953 if (node_id->nb != 6) {
954 printk(KNOT_XIRC "malformed node-id in CIS\n");
955 goto failure;
956 }
957 for (i=0; i < 6; i++)
958 dev->dev_addr[i] = node_id->id[i];
959
960 /* Configure card */
961 link->state |= DEV_CONFIG;
962
963 link->io.IOAddrLines =10;
964 link->io.Attributes1 = IO_DATA_PATH_WIDTH_16;
965 link->irq.Attributes = IRQ_HANDLE_PRESENT;
966 link->irq.IRQInfo1 = IRQ_INFO2_VALID | IRQ_LEVEL_ID;
967 if (irq_list[0] == -1)
968 link->irq.IRQInfo2 = irq_mask;
969 else {
970 for (i = 0; i < 4; i++)
971 link->irq.IRQInfo2 |= 1 << irq_list[i];
972 }
973 if (local->modem) {
974 int pass;
975
976 if (do_sound) {
977 link->conf.Attributes |= CONF_ENABLE_SPKR;
978 link->conf.Status |= CCSR_AUDIO_ENA;
979 }
980 link->irq.Attributes |= IRQ_TYPE_DYNAMIC_SHARING|IRQ_FIRST_SHARED ;
981 link->io.NumPorts2 = 8;
982 link->io.Attributes2 = IO_DATA_PATH_WIDTH_8;
983 if (local->dingo) {
984 /* Take the Modem IO port from the CIS and scan for a free
985 * Ethernet port */
986 link->io.NumPorts1 = 16; /* no Mako stuff anymore */
987 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
988 for (err = first_tuple(handle, &tuple, &parse); !err;
989 err = next_tuple(handle, &tuple, &parse)) {
990 if (cf->io.nwin > 0 && (cf->io.win[0].base & 0xf) == 8) {
991 for (ioaddr = 0x300; ioaddr < 0x400; ioaddr += 0x10) {
992 link->conf.ConfigIndex = cf->index ;
993 link->io.BasePort2 = cf->io.win[0].base;
994 link->io.BasePort1 = ioaddr;
995 if (!(err=CardServices(RequestIO, link->handle,
996 &link->io)))
997 goto port_found;
998 }
999 }
1000 }
1001 } else {
1002 link->io.NumPorts1 = 18;
1003 /* We do 2 passes here: The first one uses the regular mapping and
1004 * the second tries again, thereby considering that the 32 ports are
1005 * mirrored every 32 bytes. Actually we use a mirrored port for
1006 * the Mako if (on the first pass) the COR bit 5 is set.
1007 */
1008 for (pass=0; pass < 2; pass++) {
1009 tuple.DesiredTuple = CISTPL_CFTABLE_ENTRY;
1010 for (err = first_tuple(handle, &tuple, &parse); !err;
1011 err = next_tuple(handle, &tuple, &parse)){
1012 if (cf->io.nwin > 0 && (cf->io.win[0].base & 0xf) == 8){
1013 link->conf.ConfigIndex = cf->index ;
1014 link->io.BasePort2 = cf->io.win[0].base;
1015 link->io.BasePort1 = link->io.BasePort2
1016 + (pass ? (cf->index & 0x20 ? -24:8)
1017 : (cf->index & 0x20 ? 8:-24));
1018 if (!(err=CardServices(RequestIO, link->handle,
1019 &link->io)))
1020 goto port_found;
1021 }
1022 }
1023 }
1024 /* if special option:
1025 * try to configure as Ethernet only.
1026 * .... */
1027 }
1028 printk(KNOT_XIRC "no ports available\n");
1029 } else {
1030 link->irq.Attributes |= IRQ_TYPE_EXCLUSIVE;
1031 link->io.NumPorts1 = 16;
1032 for (ioaddr = 0x300; ioaddr < 0x400; ioaddr += 0x10) {
1033 link->io.BasePort1 = ioaddr;
1034 if (!(err=CardServices(RequestIO, link->handle, &link->io)))
1035 goto port_found;
1036 }
1037 link->io.BasePort1 = 0; /* let CS decide */
1038 if ((err=CardServices(RequestIO, link->handle, &link->io))) {
1039 cs_error(link->handle, RequestIO, err);
1040 goto config_error;
1041 }
1042 }
1043 port_found:
1044 if (err)
1045 goto config_error;
1046
1047 /****************
1048 * Now allocate an interrupt line. Note that this does not
1049 * actually assign a handler to the interrupt.
1050 */
1051 if ((err=CardServices(RequestIRQ, link->handle, &link->irq))) {
1052 cs_error(link->handle, RequestIRQ, err);
1053 goto config_error;
1054 }
1055
1056 /****************
1057 * This actually configures the PCMCIA socket -- setting up
1058 * the I/O windows and the interrupt mapping.
1059 */
1060 if ((err=CardServices(RequestConfiguration,
1061 link->handle, &link->conf))) {
1062 cs_error(link->handle, RequestConfiguration, err);
1063 goto config_error;
1064 }
1065
1066 if (local->dingo) {
1067 conf_reg_t reg;
1068 win_req_t req;
1069 memreq_t mem;
1070
1071 /* Reset the modem's BAR to the correct value
1072 * This is necessary because in the RequestConfiguration call,
1073 * the base address of the ethernet port (BasePort1) is written
1074 * to the BAR registers of the modem.
1075 */
1076 reg.Action = CS_WRITE;
1077 reg.Offset = CISREG_IOBASE_0;
1078 reg.Value = link->io.BasePort2 & 0xff;
1079 if ((err = CardServices(AccessConfigurationRegister, link->handle,
1080 ®))) {
1081 cs_error(link->handle, AccessConfigurationRegister, err);
1082 goto config_error;
1083 }
1084 reg.Action = CS_WRITE;
1085 reg.Offset = CISREG_IOBASE_1;
1086 reg.Value = (link->io.BasePort2 >> 8) & 0xff;
1087 if ((err = CardServices(AccessConfigurationRegister, link->handle,
1088 ®))) {
1089 cs_error(link->handle, AccessConfigurationRegister, err);
1090 goto config_error;
1091 }
1092
1093 /* There is no config entry for the Ethernet part which
1094 * is at 0x0800. So we allocate a window into the attribute
1095 * memory and write direct to the CIS registers
1096 */
1097 req.Attributes = WIN_DATA_WIDTH_8|WIN_MEMORY_TYPE_AM|WIN_ENABLE;
1098 req.Base = req.Size = 0;
1099 req.AccessSpeed = 0;
1100 link->win = (window_handle_t)link->handle;
1101 if ((err = CardServices(RequestWindow, &link->win, &req))) {
1102 cs_error(link->handle, RequestWindow, err);
1103 goto config_error;
1104 }
1105 local->dingo_ccr = ioremap(req.Base,0x1000) + 0x0800;
1106 mem.CardOffset = 0x0;
1107 mem.Page = 0;
1108 if ((err = CardServices(MapMemPage, link->win, &mem))) {
1109 cs_error(link->handle, MapMemPage, err);
1110 goto config_error;
1111 }
1112
1113 /* Setup the CCRs; there are no infos in the CIS about the Ethernet
1114 * part.
1115 */
1116 writeb(0x47, local->dingo_ccr + CISREG_COR);
1117 ioaddr = link->io.BasePort1;
1118 writeb(ioaddr & 0xff , local->dingo_ccr + CISREG_IOBASE_0);
1119 writeb((ioaddr >> 8)&0xff , local->dingo_ccr + CISREG_IOBASE_1);
1120
1121 #if 0
1122 {
1123 u_char tmp;
1124 printk(KERN_INFO "ECOR:");
1125 for (i=0; i < 7; i++) {
1126 tmp = readb(local->dingo_ccr + i*2);
1127 printk(" %02x", tmp);
1128 }
1129 printk("\n");
1130 printk(KERN_INFO "DCOR:");
1131 for (i=0; i < 4; i++) {
1132 tmp = readb(local->dingo_ccr + 0x20 + i*2);
1133 printk(" %02x", tmp);
1134 }
1135 printk("\n");
1136 printk(KERN_INFO "SCOR:");
1137 for (i=0; i < 10; i++) {
1138 tmp = readb(local->dingo_ccr + 0x40 + i*2);
1139 printk(" %02x", tmp);
1140 }
1141 printk("\n");
1142 }
1143 #endif
1144
1145 writeb(0x01, local->dingo_ccr + 0x20);
1146 writeb(0x0c, local->dingo_ccr + 0x22);
1147 writeb(0x00, local->dingo_ccr + 0x24);
1148 writeb(0x00, local->dingo_ccr + 0x26);
1149 writeb(0x00, local->dingo_ccr + 0x28);
1150 }
1151
1152 /* The if_port symbol can be set when the module is loaded */
1153 local->probe_port=0;
1154 if (!if_port) {
1155 local->probe_port = dev->if_port = 1;
1156 } else if ((if_port >= 1 && if_port <= 2) ||
1157 (local->mohawk && if_port==4))
1158 dev->if_port = if_port;
1159 else
1160 printk(KNOT_XIRC "invalid if_port requested\n");
1161
1162 /* we can now register the device with the net subsystem */
1163 dev->irq = link->irq.AssignedIRQ;
1164 dev->base_addr = link->io.BasePort1;
1165 if ((err=register_netdev(dev))) {
1166 printk(KNOT_XIRC "register_netdev() failed\n");
1167 goto config_error;
1168 }
1169
1170 strcpy(local->node.dev_name, dev->name);
1171 link->dev = &local->node;
1172 link->state &= ~DEV_CONFIG_PENDING;
1173
1174 if (local->dingo)
1175 do_reset(dev, 1); /* a kludge to make the cem56 work */
1176
1177 /* give some infos about the hardware */
1178 printk(KERN_INFO "%s: %s: port %#3lx, irq %d, hwaddr",
1179 dev->name, local->manf_str,(u_long)dev->base_addr, (int)dev->irq);
1180 for (i = 0; i < 6; i++)
1181 printk("%c%02X", i?':':' ', dev->dev_addr[i]);
1182 printk("\n");
1183
1184 return;
1185
1186 config_error:
1187 link->state &= ~DEV_CONFIG_PENDING;
1188 xirc2ps_release((u_long)link);
1189 return;
1190
1191 cis_error:
1192 printk(KNOT_XIRC "unable to parse CIS\n");
1193 failure:
1194 link->state &= ~DEV_CONFIG_PENDING;
1195 } /* xirc2ps_config */
1196
1197 /****************
1198 * After a card is removed, xirc2ps_release() will unregister the net
1199 * device, and release the PCMCIA configuration. If the device is
1200 * still open, this will be postponed until it is closed.
1201 */
1202 static void
xirc2ps_release(u_long arg)1203 xirc2ps_release(u_long arg)
1204 {
1205 dev_link_t *link = (dev_link_t *) arg;
1206 local_info_t *local = link->priv;
1207 struct net_device *dev = &local->dev;
1208
1209 DEBUG(0, "release(0x%p)\n", link);
1210
1211 /*
1212 * If the device is currently in use, we won't release until it
1213 * is actually closed.
1214 */
1215 if (link->open) {
1216 DEBUG(0, "release postponed, '%s' "
1217 "still open\n", link->dev->dev_name);
1218 link->state |= DEV_STALE_CONFIG;
1219 return;
1220 }
1221
1222 if (link->win) {
1223 local_info_t *local = dev->priv;
1224 if (local->dingo)
1225 iounmap(local->dingo_ccr - 0x0800);
1226 CardServices(ReleaseWindow, link->win);
1227 }
1228 CardServices(ReleaseConfiguration, link->handle);
1229 CardServices(ReleaseIO, link->handle, &link->io);
1230 CardServices(ReleaseIRQ, link->handle, &link->irq);
1231 link->state &= ~DEV_CONFIG;
1232
1233 } /* xirc2ps_release */
1234
1235 /*====================================================================*/
1236
1237 /****************
1238 * The card status event handler. Mostly, this schedules other
1239 * stuff to run after an event is received. A CARD_REMOVAL event
1240 * also sets some flags to discourage the net drivers from trying
1241 * to talk to the card any more.
1242 *
1243 * When a CARD_REMOVAL event is received, we immediately set a flag
1244 * to block future accesses to this device. All the functions that
1245 * actually access the device should check this flag to make sure
1246 * the card is still present.
1247 */
1248
1249 static int
xirc2ps_event(event_t event,int priority,event_callback_args_t * args)1250 xirc2ps_event(event_t event, int priority,
1251 event_callback_args_t * args)
1252 {
1253 dev_link_t *link = args->client_data;
1254 local_info_t *lp = link->priv;
1255 struct net_device *dev = &lp->dev;
1256
1257 DEBUG(0, "event(%d)\n", (int)event);
1258
1259 switch (event) {
1260 case CS_EVENT_REGISTRATION_COMPLETE:
1261 DEBUG(0, "registration complete\n");
1262 break;
1263 case CS_EVENT_CARD_REMOVAL:
1264 link->state &= ~DEV_PRESENT;
1265 if (link->state & DEV_CONFIG) {
1266 netif_device_detach(dev);
1267 mod_timer(&link->release, jiffies + HZ/20);
1268 }
1269 break;
1270 case CS_EVENT_CARD_INSERTION:
1271 link->state |= DEV_PRESENT | DEV_CONFIG_PENDING;
1272 xirc2ps_config(link);
1273 break;
1274 case CS_EVENT_PM_SUSPEND:
1275 link->state |= DEV_SUSPEND;
1276 /* Fall through... */
1277 case CS_EVENT_RESET_PHYSICAL:
1278 if (link->state & DEV_CONFIG) {
1279 if (link->open) {
1280 netif_device_detach(dev);
1281 do_powerdown(dev);
1282 }
1283 CardServices(ReleaseConfiguration, link->handle);
1284 }
1285 break;
1286 case CS_EVENT_PM_RESUME:
1287 link->state &= ~DEV_SUSPEND;
1288 /* Fall through... */
1289 case CS_EVENT_CARD_RESET:
1290 if (link->state & DEV_CONFIG) {
1291 CardServices(RequestConfiguration, link->handle, &link->conf);
1292 if (link->open) {
1293 do_reset(dev,1);
1294 netif_device_attach(dev);
1295 }
1296 }
1297 break;
1298 }
1299 return 0;
1300 } /* xirc2ps_event */
1301
1302 /*====================================================================*/
1303
1304 /****************
1305 * This is the Interrupt service route.
1306 */
1307 static void
xirc2ps_interrupt(int irq,void * dev_id,struct pt_regs * regs)1308 xirc2ps_interrupt(int irq, void *dev_id, struct pt_regs *regs)
1309 {
1310 struct net_device *dev = (struct net_device *)dev_id;
1311 local_info_t *lp = dev->priv;
1312 ioaddr_t ioaddr;
1313 u_char saved_page;
1314 unsigned bytes_rcvd;
1315 unsigned int_status, eth_status, rx_status, tx_status;
1316 unsigned rsr, pktlen;
1317 ulong start_ticks = jiffies; /* fixme: jiffies rollover every 497 days
1318 * is this something to worry about?
1319 * -- on a laptop?
1320 */
1321
1322 if (!netif_device_present(dev))
1323 return;
1324
1325 ioaddr = dev->base_addr;
1326 if (lp->mohawk) { /* must disable the interrupt */
1327 PutByte(XIRCREG_CR, 0);
1328 }
1329
1330 DEBUG(6, "%s: interrupt %d at %#x.\n", dev->name, irq, ioaddr);
1331
1332 saved_page = GetByte(XIRCREG_PR);
1333 /* Read the ISR to see whats the cause for the interrupt.
1334 * This also clears the interrupt flags on CE2 cards
1335 */
1336 int_status = GetByte(XIRCREG_ISR);
1337 bytes_rcvd = 0;
1338 loop_entry:
1339 if (int_status == 0xff) { /* card may be ejected */
1340 DEBUG(3, "%s: interrupt %d for dead card\n", dev->name, irq);
1341 goto leave;
1342 }
1343 eth_status = GetByte(XIRCREG_ESR);
1344
1345 SelectPage(0x40);
1346 rx_status = GetByte(XIRCREG40_RXST0);
1347 PutByte(XIRCREG40_RXST0, (~rx_status & 0xff));
1348 tx_status = GetByte(XIRCREG40_TXST0);
1349 tx_status |= GetByte(XIRCREG40_TXST1) << 8;
1350 PutByte(XIRCREG40_TXST0, 0);
1351 PutByte(XIRCREG40_TXST1, 0);
1352
1353 DEBUG(3, "%s: ISR=%#2.2x ESR=%#2.2x RSR=%#2.2x TSR=%#4.4x\n",
1354 dev->name, int_status, eth_status, rx_status, tx_status);
1355
1356 /***** receive section ******/
1357 SelectPage(0);
1358 while (eth_status & FullPktRcvd) {
1359 rsr = GetByte(XIRCREG0_RSR);
1360 if (bytes_rcvd > maxrx_bytes && (rsr & PktRxOk)) {
1361 /* too many bytes received during this int, drop the rest of the
1362 * packets */
1363 lp->stats.rx_dropped++;
1364 DEBUG(2, "%s: RX drop, too much done\n", dev->name);
1365 } else if (rsr & PktRxOk) {
1366 struct sk_buff *skb;
1367
1368 pktlen = GetWord(XIRCREG0_RBC);
1369 bytes_rcvd += pktlen;
1370
1371 DEBUG(5, "rsr=%#02x packet_length=%u\n", rsr, pktlen);
1372
1373 skb = dev_alloc_skb(pktlen+3); /* 1 extra so we can use insw */
1374 if (!skb) {
1375 printk(KNOT_XIRC "low memory, packet dropped (size=%u)\n",
1376 pktlen);
1377 lp->stats.rx_dropped++;
1378 } else { /* okay get the packet */
1379 skb_reserve(skb, 2);
1380 if (lp->silicon == 0 ) { /* work around a hardware bug */
1381 unsigned rhsa; /* receive start address */
1382
1383 SelectPage(5);
1384 rhsa = GetWord(XIRCREG5_RHSA0);
1385 SelectPage(0);
1386 rhsa += 3; /* skip control infos */
1387 if (rhsa >= 0x8000)
1388 rhsa = 0;
1389 if (rhsa + pktlen > 0x8000) {
1390 unsigned i;
1391 u_char *buf = skb_put(skb, pktlen);
1392 for (i=0; i < pktlen ; i++, rhsa++) {
1393 buf[i] = GetByte(XIRCREG_EDP);
1394 if (rhsa == 0x8000) {
1395 rhsa = 0;
1396 i--;
1397 }
1398 }
1399 } else {
1400 insw(ioaddr+XIRCREG_EDP,
1401 skb_put(skb, pktlen), (pktlen+1)>>1);
1402 }
1403 }
1404 #if 0
1405 else if (lp->mohawk) {
1406 /* To use this 32 bit access we should use
1407 * a manual optimized loop
1408 * Also the words are swapped, we can get more
1409 * performance by using 32 bit access and swapping
1410 * the words in a register. Will need this for cardbus
1411 *
1412 * Note: don't forget to change the ALLOC_SKB to .. +3
1413 */
1414 unsigned i;
1415 u_long *p = skb_put(skb, pktlen);
1416 register u_long a;
1417 ioaddr_t edpreg = ioaddr+XIRCREG_EDP-2;
1418 for (i=0; i < len ; i += 4, p++) {
1419 a = inl(edpreg);
1420 __asm__("rorl $16,%0\n\t"
1421 :"=q" (a)
1422 : "0" (a));
1423 *p = a;
1424 }
1425 }
1426 #endif
1427 else {
1428 insw(ioaddr+XIRCREG_EDP, skb_put(skb, pktlen),
1429 (pktlen+1)>>1);
1430 }
1431 skb->protocol = eth_type_trans(skb, dev);
1432 skb->dev = dev;
1433 netif_rx(skb);
1434 dev->last_rx = jiffies;
1435 lp->stats.rx_packets++;
1436 lp->stats.rx_bytes += pktlen;
1437 if (!(rsr & PhyPkt))
1438 lp->stats.multicast++;
1439 }
1440 } else { /* bad packet */
1441 DEBUG(5, "rsr=%#02x\n", rsr);
1442 }
1443 if (rsr & PktTooLong) {
1444 lp->stats.rx_frame_errors++;
1445 DEBUG(3, "%s: Packet too long\n", dev->name);
1446 }
1447 if (rsr & CRCErr) {
1448 lp->stats.rx_crc_errors++;
1449 DEBUG(3, "%s: CRC error\n", dev->name);
1450 }
1451 if (rsr & AlignErr) {
1452 lp->stats.rx_fifo_errors++; /* okay ? */
1453 DEBUG(3, "%s: Alignment error\n", dev->name);
1454 }
1455
1456 /* clear the received/dropped/error packet */
1457 PutWord(XIRCREG0_DO, 0x8000); /* issue cmd: skip_rx_packet */
1458
1459 /* get the new ethernet status */
1460 eth_status = GetByte(XIRCREG_ESR);
1461 }
1462 if (rx_status & 0x10) { /* Receive overrun */
1463 lp->stats.rx_over_errors++;
1464 PutByte(XIRCREG_CR, ClearRxOvrun);
1465 DEBUG(3, "receive overrun cleared\n");
1466 }
1467
1468 /***** transmit section ******/
1469 if (int_status & PktTxed) {
1470 unsigned n, nn;
1471
1472 n = lp->last_ptr_value;
1473 nn = GetByte(XIRCREG0_PTR);
1474 lp->last_ptr_value = nn;
1475 if (nn < n) /* rollover */
1476 lp->stats.tx_packets += 256 - n;
1477 else if (n == nn) { /* happens sometimes - don't know why */
1478 DEBUG(0, "PTR not changed?\n");
1479 } else
1480 lp->stats.tx_packets += lp->last_ptr_value - n;
1481 netif_wake_queue(dev);
1482 }
1483 if (tx_status & 0x0002) { /* Execessive collissions */
1484 DEBUG(0, "tx restarted due to execssive collissions\n");
1485 PutByte(XIRCREG_CR, RestartTx); /* restart transmitter process */
1486 }
1487 if (tx_status & 0x0040)
1488 lp->stats.tx_aborted_errors++;
1489
1490 /* recalculate our work chunk so that we limit the duration of this
1491 * ISR to about 1/10 of a second.
1492 * Calculate only if we received a reasonable amount of bytes.
1493 */
1494 if (bytes_rcvd > 1000) {
1495 u_long duration = jiffies - start_ticks;
1496
1497 if (duration >= HZ/10) { /* if more than about 1/10 second */
1498 maxrx_bytes = (bytes_rcvd * (HZ/10)) / duration;
1499 if (maxrx_bytes < 2000)
1500 maxrx_bytes = 2000;
1501 else if (maxrx_bytes > 22000)
1502 maxrx_bytes = 22000;
1503 DEBUG(1, "set maxrx=%u (rcvd=%u ticks=%lu)\n",
1504 maxrx_bytes, bytes_rcvd, duration);
1505 } else if (!duration && maxrx_bytes < 22000) {
1506 /* now much faster */
1507 maxrx_bytes += 2000;
1508 if (maxrx_bytes > 22000)
1509 maxrx_bytes = 22000;
1510 DEBUG(1, "set maxrx=%u\n", maxrx_bytes);
1511 }
1512 }
1513
1514 leave:
1515 if (lockup_hack) {
1516 if (int_status != 0xff && (int_status = GetByte(XIRCREG_ISR)) != 0)
1517 goto loop_entry;
1518 }
1519 SelectPage(saved_page);
1520 PutByte(XIRCREG_CR, EnableIntr); /* re-enable interrupts */
1521 /* Instead of dropping packets during a receive, we could
1522 * force an interrupt with this command:
1523 * PutByte(XIRCREG_CR, EnableIntr|ForceIntr);
1524 */
1525 } /* xirc2ps_interrupt */
1526
1527 /*====================================================================*/
1528
1529 static void
do_tx_timeout(struct net_device * dev)1530 do_tx_timeout(struct net_device *dev)
1531 {
1532 local_info_t *lp = dev->priv;
1533 printk(KERN_NOTICE "%s: transmit timed out\n", dev->name);
1534 lp->stats.tx_errors++;
1535 /* reset the card */
1536 do_reset(dev,1);
1537 dev->trans_start = jiffies;
1538 netif_wake_queue(dev);
1539 }
1540
1541 static int
do_start_xmit(struct sk_buff * skb,struct net_device * dev)1542 do_start_xmit(struct sk_buff *skb, struct net_device *dev)
1543 {
1544 local_info_t *lp = dev->priv;
1545 ioaddr_t ioaddr = dev->base_addr;
1546 int okay;
1547 unsigned freespace;
1548 unsigned pktlen = skb? skb->len : 0;
1549
1550 DEBUG(1, "do_start_xmit(skb=%p, dev=%p) len=%u\n",
1551 skb, dev, pktlen);
1552
1553
1554 /* adjust the packet length to min. required
1555 * and hope that the buffer is large enough
1556 * to provide some random data.
1557 * fixme: For Mohawk we can change this by sending
1558 * a larger packetlen than we actually have; the chip will
1559 * pad this in his buffer with random bytes
1560 */
1561 if (pktlen < ETH_ZLEN)
1562 {
1563 skb = skb_padto(skb, ETH_ZLEN);
1564 if(skb == NULL)
1565 return 0;
1566 pktlen = ETH_ZLEN;
1567 }
1568
1569 netif_stop_queue(dev);
1570 SelectPage(0);
1571 PutWord(XIRCREG0_TRS, (u_short)pktlen+2);
1572 freespace = GetWord(XIRCREG0_TSO);
1573 okay = freespace & 0x8000;
1574 freespace &= 0x7fff;
1575 /* TRS doesn't work - (indeed it is eliminated with sil-rev 1) */
1576 okay = pktlen +2 < freespace;
1577 DEBUG(2 + (okay ? 2 : 0), "%s: avail. tx space=%u%s\n",
1578 dev->name, freespace, okay ? " (okay)":" (not enough)");
1579 if (!okay) { /* not enough space */
1580 return 1; /* upper layer may decide to requeue this packet */
1581 }
1582 /* send the packet */
1583 PutWord(XIRCREG_EDP, (u_short)pktlen);
1584 outsw(ioaddr+XIRCREG_EDP, skb->data, pktlen>>1);
1585 if (pktlen & 1)
1586 PutByte(XIRCREG_EDP, skb->data[pktlen-1]);
1587
1588 if (lp->mohawk)
1589 PutByte(XIRCREG_CR, TransmitPacket|EnableIntr);
1590
1591 dev_kfree_skb (skb);
1592 dev->trans_start = jiffies;
1593 lp->stats.tx_bytes += pktlen;
1594 netif_start_queue(dev);
1595 return 0;
1596 }
1597
1598 static struct net_device_stats *
do_get_stats(struct net_device * dev)1599 do_get_stats(struct net_device *dev)
1600 {
1601 local_info_t *lp = dev->priv;
1602
1603 /* lp->stats.rx_missed_errors = GetByte(?) */
1604 return &lp->stats;
1605 }
1606
1607 /****************
1608 * Set all addresses: This first one is the individual address,
1609 * the next 9 addresses are taken from the multicast list and
1610 * the rest is filled with the individual address.
1611 */
1612 static void
set_addresses(struct net_device * dev)1613 set_addresses(struct net_device *dev)
1614 {
1615 ioaddr_t ioaddr = dev->base_addr;
1616 local_info_t *lp = dev->priv;
1617 struct dev_mc_list *dmi = dev->mc_list;
1618 char *addr;
1619 int i,j,k,n;
1620
1621 SelectPage(k=0x50);
1622 for (i=0,j=8,n=0; ; i++, j++) {
1623 if (i > 5) {
1624 if (++n > 9)
1625 break;
1626 i = 0;
1627 }
1628 if (j > 15) {
1629 j = 8;
1630 k++;
1631 SelectPage(k);
1632 }
1633
1634 if (n && n <= dev->mc_count && dmi) {
1635 addr = dmi->dmi_addr;
1636 dmi = dmi->next;
1637 } else
1638 addr = dev->dev_addr;
1639
1640 if (lp->mohawk)
1641 PutByte(j, addr[5-i]);
1642 else
1643 PutByte(j, addr[i]);
1644 }
1645 SelectPage(0);
1646 }
1647
1648 /****************
1649 * Set or clear the multicast filter for this adaptor.
1650 * We can filter up to 9 addresses, if more are requested we set
1651 * multicast promiscuous mode.
1652 */
1653
1654 static void
set_multicast_list(struct net_device * dev)1655 set_multicast_list(struct net_device *dev)
1656 {
1657 ioaddr_t ioaddr = dev->base_addr;
1658
1659 SelectPage(0x42);
1660 if (dev->flags & IFF_PROMISC) { /* snoop */
1661 PutByte(XIRCREG42_SWC1, 0x06); /* set MPE and PME */
1662 } else if (dev->mc_count > 9 || (dev->flags & IFF_ALLMULTI)) {
1663 PutByte(XIRCREG42_SWC1, 0x06); /* set MPE */
1664 } else if (dev->mc_count) {
1665 /* the chip can filter 9 addresses perfectly */
1666 PutByte(XIRCREG42_SWC1, 0x00);
1667 SelectPage(0x40);
1668 PutByte(XIRCREG40_CMD0, Offline);
1669 set_addresses(dev);
1670 SelectPage(0x40);
1671 PutByte(XIRCREG40_CMD0, EnableRecv | Online);
1672 } else { /* standard usage */
1673 PutByte(XIRCREG42_SWC1, 0x00);
1674 }
1675 SelectPage(0);
1676 }
1677
1678 static int
do_config(struct net_device * dev,struct ifmap * map)1679 do_config(struct net_device *dev, struct ifmap *map)
1680 {
1681 local_info_t *local = dev->priv;
1682
1683 DEBUG(0, "do_config(%p)\n", dev);
1684 if (map->port != 255 && map->port != dev->if_port) {
1685 if (map->port > 4)
1686 return -EINVAL;
1687 if (!map->port) {
1688 local->probe_port = 1;
1689 dev->if_port = 1;
1690 } else {
1691 local->probe_port = 0;
1692 dev->if_port = map->port;
1693 }
1694 printk(KERN_INFO "%s: switching to %s port\n",
1695 dev->name, if_names[dev->if_port]);
1696 do_reset(dev,1); /* not the fine way :-) */
1697 }
1698 return 0;
1699 }
1700
1701 /****************
1702 * Open the driver
1703 */
1704 static int
do_open(struct net_device * dev)1705 do_open(struct net_device *dev)
1706 {
1707 local_info_t *lp = dev->priv;
1708 dev_link_t *link = &lp->link;
1709
1710 DEBUG(0, "do_open(%p)\n", dev);
1711
1712 /* Check that the PCMCIA card is still here. */
1713 /* Physical device present signature. */
1714 if (!DEV_OK(link))
1715 return -ENODEV;
1716
1717 /* okay */
1718 link->open++;
1719 MOD_INC_USE_COUNT;
1720
1721 netif_start_queue(dev);
1722 do_reset(dev,1);
1723
1724 return 0;
1725 }
1726
netdev_get_drvinfo(struct net_device * dev,struct ethtool_drvinfo * info)1727 static void netdev_get_drvinfo(struct net_device *dev,
1728 struct ethtool_drvinfo *info)
1729 {
1730 strcpy(info->driver, "xirc2ps_cs");
1731 }
1732
1733 static struct ethtool_ops netdev_ethtool_ops = {
1734 .get_drvinfo = netdev_get_drvinfo,
1735 };
1736
1737 static int
do_ioctl(struct net_device * dev,struct ifreq * rq,int cmd)1738 do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
1739 {
1740 local_info_t *local = dev->priv;
1741 ioaddr_t ioaddr = dev->base_addr;
1742 u16 *data = (u16 *)&rq->ifr_data;
1743
1744 DEBUG(1, "%s: ioctl(%-.6s, %#04x) %04x %04x %04x %04x\n",
1745 dev->name, rq->ifr_ifrn.ifrn_name, cmd,
1746 data[0], data[1], data[2], data[3]);
1747
1748 if (!local->mohawk)
1749 return -EOPNOTSUPP;
1750
1751 switch(cmd) {
1752 case SIOCGMIIPHY: /* Get the address of the PHY in use. */
1753 case SIOCDEVPRIVATE:
1754 data[0] = 0; /* we have only this address */
1755 /* fall trough */
1756 case SIOCGMIIREG: /* Read the specified MII register. */
1757 case SIOCDEVPRIVATE+1:
1758 data[3] = mii_rd(ioaddr, data[0] & 0x1f, data[1] & 0x1f);
1759 break;
1760 case SIOCSMIIREG: /* Write the specified MII register */
1761 case SIOCDEVPRIVATE+2:
1762 if (!capable(CAP_NET_ADMIN))
1763 return -EPERM;
1764 mii_wr(ioaddr, data[0] & 0x1f, data[1] & 0x1f, data[2], 16);
1765 break;
1766 default:
1767 return -EOPNOTSUPP;
1768 }
1769 return 0;
1770 }
1771
1772 static void
hardreset(struct net_device * dev)1773 hardreset(struct net_device *dev)
1774 {
1775 local_info_t *local = dev->priv;
1776 ioaddr_t ioaddr = dev->base_addr;
1777
1778 SelectPage(4);
1779 udelay(1);
1780 PutByte(XIRCREG4_GPR1, 0); /* clear bit 0: power down */
1781 busy_loop(HZ/25); /* wait 40 msec */
1782 if (local->mohawk)
1783 PutByte(XIRCREG4_GPR1, 1); /* set bit 0: power up */
1784 else
1785 PutByte(XIRCREG4_GPR1, 1 | 4); /* set bit 0: power up, bit 2: AIC */
1786 busy_loop(HZ/50); /* wait 20 msec */
1787 }
1788
1789 static void
do_reset(struct net_device * dev,int full)1790 do_reset(struct net_device *dev, int full)
1791 {
1792 local_info_t *local = dev->priv;
1793 ioaddr_t ioaddr = dev->base_addr;
1794 unsigned value;
1795
1796 DEBUG(0, "%s: do_reset(%p,%d)\n", dev? dev->name:"eth?", dev, full);
1797
1798 hardreset(dev);
1799 PutByte(XIRCREG_CR, SoftReset); /* set */
1800 busy_loop(HZ/50); /* wait 20 msec */
1801 PutByte(XIRCREG_CR, 0); /* clear */
1802 busy_loop(HZ/25); /* wait 40 msec */
1803 if (local->mohawk) {
1804 SelectPage(4);
1805 /* set pin GP1 and GP2 to output (0x0c)
1806 * set GP1 to low to power up the ML6692 (0x00)
1807 * set GP2 to high to power up the 10Mhz chip (0x02)
1808 */
1809 PutByte(XIRCREG4_GPR0, 0x0e);
1810 }
1811
1812 /* give the circuits some time to power up */
1813 busy_loop(HZ/2); /* about 500ms */
1814
1815 local->last_ptr_value = 0;
1816 local->silicon = local->mohawk ? (GetByte(XIRCREG4_BOV) & 0x70) >> 4
1817 : (GetByte(XIRCREG4_BOV) & 0x30) >> 4;
1818
1819 if (local->probe_port) {
1820 if (!local->mohawk) {
1821 SelectPage(4);
1822 PutByte(XIRCREG4_GPR0, 4);
1823 local->probe_port = 0;
1824 }
1825 } else if (dev->if_port == 2) { /* enable 10Base2 */
1826 SelectPage(0x42);
1827 PutByte(XIRCREG42_SWC1, 0xC0);
1828 } else { /* enable 10BaseT */
1829 SelectPage(0x42);
1830 PutByte(XIRCREG42_SWC1, 0x80);
1831 }
1832 busy_loop(HZ/25); /* wait 40 msec to let it complete */
1833
1834 #ifdef PCMCIA_DEBUG
1835 if (pc_debug) {
1836 SelectPage(0);
1837 value = GetByte(XIRCREG_ESR); /* read the ESR */
1838 printk(KERN_DEBUG "%s: ESR is: %#02x\n", dev->name, value);
1839 }
1840 #endif
1841
1842 /* setup the ECR */
1843 SelectPage(1);
1844 PutByte(XIRCREG1_IMR0, 0xff); /* allow all ints */
1845 PutByte(XIRCREG1_IMR1, 1 ); /* and Set TxUnderrunDetect */
1846 value = GetByte(XIRCREG1_ECR);
1847 #if 0
1848 if (local->mohawk)
1849 value |= DisableLinkPulse;
1850 PutByte(XIRCREG1_ECR, value);
1851 #endif
1852 DEBUG(0, "%s: ECR is: %#02x\n", dev->name, value);
1853
1854 SelectPage(0x42);
1855 PutByte(XIRCREG42_SWC0, 0x20); /* disable source insertion */
1856
1857 if (local->silicon != 1) {
1858 /* set the local memory dividing line.
1859 * The comments in the sample code say that this is only
1860 * settable with the scipper version 2 which is revision 0.
1861 * Always for CE3 cards
1862 */
1863 SelectPage(2);
1864 PutWord(XIRCREG2_RBS, 0x2000);
1865 }
1866
1867 if (full)
1868 set_addresses(dev);
1869
1870 /* Hardware workaround:
1871 * The receive byte pointer after reset is off by 1 so we need
1872 * to move the offset pointer back to 0.
1873 */
1874 SelectPage(0);
1875 PutWord(XIRCREG0_DO, 0x2000); /* change offset command, off=0 */
1876
1877 /* setup MAC IMRs and clear status registers */
1878 SelectPage(0x40); /* Bit 7 ... bit 0 */
1879 PutByte(XIRCREG40_RMASK0, 0xff); /* ROK, RAB, rsv, RO, CRC, AE, PTL, MP */
1880 PutByte(XIRCREG40_TMASK0, 0xff); /* TOK, TAB, SQE, LL, TU, JAB, EXC, CRS */
1881 PutByte(XIRCREG40_TMASK1, 0xb0); /* rsv, rsv, PTD, EXT, rsv,rsv,rsv, rsv*/
1882 PutByte(XIRCREG40_RXST0, 0x00); /* ROK, RAB, REN, RO, CRC, AE, PTL, MP */
1883 PutByte(XIRCREG40_TXST0, 0x00); /* TOK, TAB, SQE, LL, TU, JAB, EXC, CRS */
1884 PutByte(XIRCREG40_TXST1, 0x00); /* TEN, rsv, PTD, EXT, retry_counter:4 */
1885
1886 if (full && local->mohawk && init_mii(dev)) {
1887 if (dev->if_port == 4 || local->dingo || local->new_mii) {
1888 printk(KERN_INFO "%s: MII selected\n", dev->name);
1889 SelectPage(2);
1890 PutByte(XIRCREG2_MSR, GetByte(XIRCREG2_MSR) | 0x08);
1891 busy_loop(HZ/50);
1892 } else {
1893 printk(KERN_INFO "%s: MII detected; using 10mbs\n",
1894 dev->name);
1895 SelectPage(0x42);
1896 if (dev->if_port == 2) /* enable 10Base2 */
1897 PutByte(XIRCREG42_SWC1, 0xC0);
1898 else /* enable 10BaseT */
1899 PutByte(XIRCREG42_SWC1, 0x80);
1900 busy_loop(HZ/25); /* wait 40 msec to let it complete */
1901 }
1902 if (full_duplex)
1903 PutByte(XIRCREG1_ECR, GetByte(XIRCREG1_ECR | FullDuplex));
1904 } else { /* No MII */
1905 SelectPage(0);
1906 value = GetByte(XIRCREG_ESR); /* read the ESR */
1907 dev->if_port = (value & MediaSelect) ? 1 : 2;
1908 }
1909
1910 /* configure the LEDs */
1911 SelectPage(2);
1912 if (dev->if_port == 1 || dev->if_port == 4) /* TP: Link and Activity */
1913 PutByte(XIRCREG2_LED, 0x3b);
1914 else /* Coax: Not-Collision and Activity */
1915 PutByte(XIRCREG2_LED, 0x3a);
1916
1917 if (local->dingo)
1918 PutByte(0x0b, 0x04); /* 100 Mbit LED */
1919
1920 /* enable receiver and put the mac online */
1921 if (full) {
1922 SelectPage(0x40);
1923 PutByte(XIRCREG40_CMD0, EnableRecv | Online);
1924 }
1925
1926 /* setup Ethernet IMR and enable interrupts */
1927 SelectPage(1);
1928 PutByte(XIRCREG1_IMR0, 0xff);
1929 udelay(1);
1930 SelectPage(0);
1931 PutByte(XIRCREG_CR, EnableIntr);
1932 if (local->modem && !local->dingo) { /* do some magic */
1933 if (!(GetByte(0x10) & 0x01))
1934 PutByte(0x10, 0x11); /* unmask master-int bit */
1935 }
1936
1937 if (full)
1938 printk(KERN_INFO "%s: media %s, silicon revision %d\n",
1939 dev->name, if_names[dev->if_port], local->silicon);
1940 /* We should switch back to page 0 to avoid a bug in revision 0
1941 * where regs with offset below 8 can't be read after an access
1942 * to the MAC registers */
1943 SelectPage(0);
1944 }
1945
1946 /****************
1947 * Initialize the Media-Independent-Interface
1948 * Returns: True if we have a good MII
1949 */
1950 static int
init_mii(struct net_device * dev)1951 init_mii(struct net_device *dev)
1952 {
1953 local_info_t *local = dev->priv;
1954 ioaddr_t ioaddr = dev->base_addr;
1955 unsigned control, status, linkpartner;
1956 int i;
1957
1958 if (if_port == 4 || if_port == 1) { /* force 100BaseT or 10BaseT */
1959 dev->if_port = if_port;
1960 local->probe_port = 0;
1961 return 1;
1962 }
1963
1964 status = mii_rd(ioaddr, 0, 1);
1965 if ((status & 0xff00) != 0x7800)
1966 return 0; /* No MII */
1967
1968 local->new_mii = (mii_rd(ioaddr, 0, 2) != 0xffff);
1969
1970 if (local->probe_port)
1971 control = 0x1000; /* auto neg */
1972 else if (dev->if_port == 4)
1973 control = 0x2000; /* no auto neg, 100mbs mode */
1974 else
1975 control = 0x0000; /* no auto neg, 10mbs mode */
1976 mii_wr(ioaddr, 0, 0, control, 16);
1977 udelay(100);
1978 control = mii_rd(ioaddr, 0, 0);
1979
1980 if (control & 0x0400) {
1981 printk(KERN_NOTICE "%s can't take PHY out of isolation mode\n",
1982 dev->name);
1983 local->probe_port = 0;
1984 return 0;
1985 }
1986
1987 if (local->probe_port) {
1988 /* according to the DP83840A specs the auto negotiation process
1989 * may take up to 3.5 sec, so we use this also for our ML6692
1990 * Fixme: Better to use a timer here!
1991 */
1992 for (i=0; i < 35; i++) {
1993 busy_loop(HZ/10); /* wait 100 msec */
1994 status = mii_rd(ioaddr, 0, 1);
1995 if ((status & 0x0020) && (status & 0x0004))
1996 break;
1997 }
1998
1999 if (!(status & 0x0020)) {
2000 printk(KERN_INFO "%s: autonegotiation failed;"
2001 " using 10mbs\n", dev->name);
2002 if (!local->new_mii) {
2003 control = 0x0000;
2004 mii_wr(ioaddr, 0, 0, control, 16);
2005 udelay(100);
2006 SelectPage(0);
2007 dev->if_port = (GetByte(XIRCREG_ESR) & MediaSelect) ? 1 : 2;
2008 }
2009 } else {
2010 linkpartner = mii_rd(ioaddr, 0, 5);
2011 printk(KERN_INFO "%s: MII link partner: %04x\n",
2012 dev->name, linkpartner);
2013 if (linkpartner & 0x0080) {
2014 dev->if_port = 4;
2015 } else
2016 dev->if_port = 1;
2017 }
2018 }
2019
2020 return 1;
2021 }
2022
2023 static void
do_powerdown(struct net_device * dev)2024 do_powerdown(struct net_device *dev)
2025 {
2026
2027 ioaddr_t ioaddr = dev->base_addr;
2028
2029 DEBUG(0, "do_powerdown(%p)\n", dev);
2030
2031 SelectPage(4);
2032 PutByte(XIRCREG4_GPR1, 0); /* clear bit 0: power down */
2033 SelectPage(0);
2034 }
2035
2036 static int
do_stop(struct net_device * dev)2037 do_stop(struct net_device *dev)
2038 {
2039 ioaddr_t ioaddr = dev->base_addr;
2040 local_info_t *lp = dev->priv;
2041 dev_link_t *link = &lp->link;
2042
2043 DEBUG(0, "do_stop(%p)\n", dev);
2044
2045 if (!link)
2046 return -ENODEV;
2047
2048 netif_stop_queue(dev);
2049
2050 SelectPage(0);
2051 PutByte(XIRCREG_CR, 0); /* disable interrupts */
2052 SelectPage(0x01);
2053 PutByte(XIRCREG1_IMR0, 0x00); /* forbid all ints */
2054 SelectPage(4);
2055 PutByte(XIRCREG4_GPR1, 0); /* clear bit 0: power down */
2056 SelectPage(0);
2057
2058 link->open--;
2059 if (link->state & DEV_STALE_CONFIG)
2060 mod_timer(&link->release, jiffies + HZ/20);
2061
2062 MOD_DEC_USE_COUNT;
2063
2064 return 0;
2065 }
2066
2067 static int __init
init_xirc2ps_cs(void)2068 init_xirc2ps_cs(void)
2069 {
2070 servinfo_t serv;
2071
2072 printk(KERN_INFO "%s\n", version);
2073 if (lockup_hack)
2074 printk(KINF_XIRC "lockup hack is enabled\n");
2075 CardServices(GetCardServicesInfo, &serv);
2076 if (serv.Revision != CS_RELEASE_CODE) {
2077 printk(KNOT_XIRC "Card Services release does not match!\n");
2078 return -1;
2079 }
2080 DEBUG(0, "pc_debug=%d\n", pc_debug);
2081 register_pccard_driver(&dev_info, &xirc2ps_attach, &xirc2ps_detach);
2082 return 0;
2083 }
2084
2085 static void __exit
exit_xirc2ps_cs(void)2086 exit_xirc2ps_cs(void)
2087 {
2088 DEBUG(0, "unloading\n");
2089 unregister_pccard_driver(&dev_info);
2090 while (dev_list) {
2091 if (dev_list->state & DEV_CONFIG)
2092 xirc2ps_release((u_long)dev_list);
2093 if (dev_list) /* xirc2ps_release() might already have detached... */
2094 xirc2ps_detach(dev_list);
2095 }
2096 }
2097
2098 module_init(init_xirc2ps_cs);
2099 module_exit(exit_xirc2ps_cs);
2100
2101 #ifndef MODULE
setup_xirc2ps_cs(char * str)2102 static int __init setup_xirc2ps_cs(char *str)
2103 {
2104 /* irq, irq_mask, if_port, full_duplex, do_sound, lockup_hack
2105 * [,irq2 [,irq3 [,irq4]]]
2106 */
2107 int ints[10] = { -1 };
2108
2109 str = get_options(str, 9, ints);
2110
2111 #define MAYBE_SET(X,Y) if (ints[0] >= Y && ints[Y] != -1) { X = ints[Y]; }
2112 MAYBE_SET(irq_list[0], 1);
2113 MAYBE_SET(irq_mask, 2);
2114 MAYBE_SET(if_port, 3);
2115 MAYBE_SET(full_duplex, 4);
2116 MAYBE_SET(do_sound, 5);
2117 MAYBE_SET(lockup_hack, 6);
2118 MAYBE_SET(irq_list[1], 7);
2119 MAYBE_SET(irq_list[2], 8);
2120 MAYBE_SET(irq_list[3], 9);
2121 #undef MAYBE_SET
2122
2123 return 0;
2124 }
2125
2126 __setup("xirc2ps_cs=", setup_xirc2ps_cs);
2127 #endif
2128