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Committer: Michael Beasley <mike@snafu.setup>
[mikesnafu-overlay.git] / drivers / net / tokenring / 3c359.c
blob44a06f8b588f2069ca4b841f3c904272797567fb
1 /*
2 * 3c359.c (c) 2000 Mike Phillips (mikep@linuxtr.net) All Rights Reserved
3 *
4 * Linux driver for 3Com 3c359 Tokenlink Velocity XL PCI NIC
5 *
6 * Base Driver Olympic:
7 * Written 1999 Peter De Schrijver & Mike Phillips
8 *
9 * This software may be used and distributed according to the terms
10 * of the GNU General Public License, incorporated herein by reference.
11 *
12 * 7/17/00 - Clean up, version number 0.9.0. Ready to release to the world.
13 *
14 * 2/16/01 - Port up to kernel 2.4.2 ready for submission into the kernel.
15 * 3/05/01 - Last clean up stuff before submission.
16 * 2/15/01 - Finally, update to new pci api.
17 *
18 * To Do:
19 */
20
21 /*
22 * Technical Card Details
23 *
24 * All access to data is done with 16/8 bit transfers. The transfer
25 * method really sucks. You can only read or write one location at a time.
26 *
27 * Also, the microcode for the card must be uploaded if the card does not have
28 * the flashrom on board. This is a 28K bloat in the driver when compiled
29 * as a module.
30 *
31 * Rx is very simple, status into a ring of descriptors, dma data transfer,
32 * interrupts to tell us when a packet is received.
33 *
34 * Tx is a little more interesting. Similar scenario, descriptor and dma data
35 * transfers, but we don't have to interrupt the card to tell it another packet
36 * is ready for transmission, we are just doing simple memory writes, not io or mmio
37 * writes. The card can be set up to simply poll on the next
38 * descriptor pointer and when this value is non-zero will automatically download
39 * the next packet. The card then interrupts us when the packet is done.
40 *
41 */
42
43 #define XL_DEBUG 0
44
45 #include <linux/module.h>
46 #include <linux/kernel.h>
47 #include <linux/errno.h>
48 #include <linux/timer.h>
49 #include <linux/in.h>
50 #include <linux/ioport.h>
51 #include <linux/string.h>
52 #include <linux/proc_fs.h>
53 #include <linux/ptrace.h>
54 #include <linux/skbuff.h>
55 #include <linux/interrupt.h>
56 #include <linux/delay.h>
57 #include <linux/netdevice.h>
58 #include <linux/trdevice.h>
59 #include <linux/stddef.h>
60 #include <linux/init.h>
61 #include <linux/pci.h>
62 #include <linux/spinlock.h>
63 #include <linux/bitops.h>
64
65 #include <net/checksum.h>
66
67 #include <asm/io.h>
68 #include <asm/system.h>
69
70 #include "3c359.h"
71
72 static char version[] __devinitdata =
73 "3c359.c v1.2.0 2/17/01 - Mike Phillips (mikep@linuxtr.net)" ;
74
75 MODULE_AUTHOR("Mike Phillips <mikep@linuxtr.net>") ;
76 MODULE_DESCRIPTION("3Com 3C359 Velocity XL Token Ring Adapter Driver \n") ;
77
78 /* Module paramters */
79
80 /* Ring Speed 0,4,16
81 * 0 = Autosense
82 * 4,16 = Selected speed only, no autosense
83 * This allows the card to be the first on the ring
84 * and become the active monitor.
85 *
86 * WARNING: Some hubs will allow you to insert
87 * at the wrong speed.
88 *
89 * The adapter will _not_ fail to open if there are no
90 * active monitors on the ring, it will simply open up in
91 * its last known ringspeed if no ringspeed is specified.
92 */
93
94 static int ringspeed[XL_MAX_ADAPTERS] = {0,} ;
95
96 module_param_array(ringspeed, int, NULL, 0);
97 MODULE_PARM_DESC(ringspeed,"3c359: Ringspeed selection - 4,16 or 0") ;
98
99 /* Packet buffer size */
100
101 static int pkt_buf_sz[XL_MAX_ADAPTERS] = {0,} ;
102
103 module_param_array(pkt_buf_sz, int, NULL, 0) ;
104 MODULE_PARM_DESC(pkt_buf_sz,"3c359: Initial buffer size") ;
105 /* Message Level */
106
107 static int message_level[XL_MAX_ADAPTERS] = {0,} ;
108
109 module_param_array(message_level, int, NULL, 0) ;
110 MODULE_PARM_DESC(message_level, "3c359: Level of reported messages \n") ;
111 /*
112 * This is a real nasty way of doing this, but otherwise you
113 * will be stuck with 1555 lines of hex #'s in the code.
114 */
115
116 #include "3c359_microcode.h"
117
118 static struct pci_device_id xl_pci_tbl[] =
119 {
120 {PCI_VENDOR_ID_3COM,PCI_DEVICE_ID_3COM_3C359, PCI_ANY_ID, PCI_ANY_ID, },
121 { } /* terminate list */
122 };
123 MODULE_DEVICE_TABLE(pci,xl_pci_tbl) ;
124
125 static int xl_init(struct net_device *dev);
126 static int xl_open(struct net_device *dev);
127 static int xl_open_hw(struct net_device *dev) ;
128 static int xl_hw_reset(struct net_device *dev);
129 static int xl_xmit(struct sk_buff *skb, struct net_device *dev);
130 static void xl_dn_comp(struct net_device *dev);
131 static int xl_close(struct net_device *dev);
132 static void xl_set_rx_mode(struct net_device *dev);
133 static irqreturn_t xl_interrupt(int irq, void *dev_id);
134 static struct net_device_stats * xl_get_stats(struct net_device *dev);
135 static int xl_set_mac_address(struct net_device *dev, void *addr) ;
136 static void xl_arb_cmd(struct net_device *dev);
137 static void xl_asb_cmd(struct net_device *dev) ;
138 static void xl_srb_cmd(struct net_device *dev, int srb_cmd) ;
139 static void xl_wait_misr_flags(struct net_device *dev) ;
140 static int xl_change_mtu(struct net_device *dev, int mtu);
141 static void xl_srb_bh(struct net_device *dev) ;
142 static void xl_asb_bh(struct net_device *dev) ;
143 static void xl_reset(struct net_device *dev) ;
144 static void xl_freemem(struct net_device *dev) ;
145
146
147 /* EEProm Access Functions */
148 static u16 xl_ee_read(struct net_device *dev, int ee_addr) ;
149 static void xl_ee_write(struct net_device *dev, int ee_addr, u16 ee_value) ;
150
151 /* Debugging functions */
152 #if XL_DEBUG
153 static void print_tx_state(struct net_device *dev) ;
154 static void print_rx_state(struct net_device *dev) ;
155
156 static void print_tx_state(struct net_device *dev)
157 {
158
159 struct xl_private *xl_priv = netdev_priv(dev);
160 struct xl_tx_desc *txd ;
161 u8 __iomem *xl_mmio = xl_priv->xl_mmio ;
162 int i ;
163
164 printk("tx_ring_head: %d, tx_ring_tail: %d, free_ent: %d \n",xl_priv->tx_ring_head,
165 xl_priv->tx_ring_tail, xl_priv->free_ring_entries) ;
166 printk("Ring , Address , FSH , DnNextPtr, Buffer, Buffer_Len \n");
167 for (i = 0; i < 16; i++) {
168 txd = &(xl_priv->xl_tx_ring[i]) ;
169 printk("%d, %08lx, %08x, %08x, %08x, %08x \n", i, virt_to_bus(txd),
170 txd->framestartheader, txd->dnnextptr, txd->buffer, txd->buffer_length ) ;
171 }
172
173 printk("DNLISTPTR = %04x \n", readl(xl_mmio + MMIO_DNLISTPTR) );
174
175 printk("DmaCtl = %04x \n", readl(xl_mmio + MMIO_DMA_CTRL) );
176 printk("Queue status = %0x \n",netif_running(dev) ) ;
177 }
178
179 static void print_rx_state(struct net_device *dev)
180 {
181
182 struct xl_private *xl_priv = netdev_priv(dev);
183 struct xl_rx_desc *rxd ;
184 u8 __iomem *xl_mmio = xl_priv->xl_mmio ;
185 int i ;
186
187 printk("rx_ring_tail: %d \n", xl_priv->rx_ring_tail) ;
188 printk("Ring , Address , FrameState , UPNextPtr, FragAddr, Frag_Len \n");
189 for (i = 0; i < 16; i++) {
190 /* rxd = (struct xl_rx_desc *)xl_priv->rx_ring_dma_addr + (i * sizeof(struct xl_rx_desc)) ; */
191 rxd = &(xl_priv->xl_rx_ring[i]) ;
192 printk("%d, %08lx, %08x, %08x, %08x, %08x \n", i, virt_to_bus(rxd),
193 rxd->framestatus, rxd->upnextptr, rxd->upfragaddr, rxd->upfraglen ) ;
194 }
195
196 printk("UPLISTPTR = %04x \n", readl(xl_mmio + MMIO_UPLISTPTR) );
197
198 printk("DmaCtl = %04x \n", readl(xl_mmio + MMIO_DMA_CTRL) );
199 printk("Queue status = %0x \n",netif_running(dev) ) ;
200 }
201 #endif
202
203 /*
204 * Read values from the on-board EEProm. This looks very strange
205 * but you have to wait for the EEProm to get/set the value before
206 * passing/getting the next value from the nic. As with all requests
207 * on this nic it has to be done in two stages, a) tell the nic which
208 * memory address you want to access and b) pass/get the value from the nic.
209 * With the EEProm, you have to wait before and inbetween access a) and b).
210 * As this is only read at initialization time and the wait period is very
211 * small we shouldn't have to worry about scheduling issues.
212 */
213
214 static u16 xl_ee_read(struct net_device *dev, int ee_addr)
215 {
216 struct xl_private *xl_priv = netdev_priv(dev);
217 u8 __iomem *xl_mmio = xl_priv->xl_mmio ;
218
219 /* Wait for EEProm to not be busy */
220 writel(IO_WORD_READ | EECONTROL, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
221 while ( readw(xl_mmio + MMIO_MACDATA) & EEBUSY ) ;
222
223 /* Tell EEProm what we want to do and where */
224 writel(IO_WORD_WRITE | EECONTROL, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
225 writew(EEREAD + ee_addr, xl_mmio + MMIO_MACDATA) ;
226
227 /* Wait for EEProm to not be busy */
228 writel(IO_WORD_READ | EECONTROL, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
229 while ( readw(xl_mmio + MMIO_MACDATA) & EEBUSY ) ;
230
231 /* Tell EEProm what we want to do and where */
232 writel(IO_WORD_WRITE | EECONTROL , xl_mmio + MMIO_MAC_ACCESS_CMD) ;
233 writew(EEREAD + ee_addr, xl_mmio + MMIO_MACDATA) ;
234
235 /* Finally read the value from the EEProm */
236 writel(IO_WORD_READ | EEDATA , xl_mmio + MMIO_MAC_ACCESS_CMD) ;
237 return readw(xl_mmio + MMIO_MACDATA) ;
238 }
239
240 /*
241 * Write values to the onboard eeprom. As with eeprom read you need to
242 * set which location to write, wait, value to write, wait, with the
243 * added twist of having to enable eeprom writes as well.
244 */
245
246 static void xl_ee_write(struct net_device *dev, int ee_addr, u16 ee_value)
247 {
248 struct xl_private *xl_priv = netdev_priv(dev);
249 u8 __iomem *xl_mmio = xl_priv->xl_mmio ;
250
251 /* Wait for EEProm to not be busy */
252 writel(IO_WORD_READ | EECONTROL, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
253 while ( readw(xl_mmio + MMIO_MACDATA) & EEBUSY ) ;
254
255 /* Enable write/erase */
256 writel(IO_WORD_WRITE | EECONTROL, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
257 writew(EE_ENABLE_WRITE, xl_mmio + MMIO_MACDATA) ;
258
259 /* Wait for EEProm to not be busy */
260 writel(IO_WORD_READ | EECONTROL, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
261 while ( readw(xl_mmio + MMIO_MACDATA) & EEBUSY ) ;
262
263 /* Put the value we want to write into EEDATA */
264 writel(IO_WORD_WRITE | EEDATA, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
265 writew(ee_value, xl_mmio + MMIO_MACDATA) ;
266
267 /* Tell EEProm to write eevalue into ee_addr */
268 writel(IO_WORD_WRITE | EECONTROL, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
269 writew(EEWRITE + ee_addr, xl_mmio + MMIO_MACDATA) ;
270
271 /* Wait for EEProm to not be busy, to ensure write gets done */
272 writel(IO_WORD_READ | EECONTROL, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
273 while ( readw(xl_mmio + MMIO_MACDATA) & EEBUSY ) ;
274
275 return ;
276 }
277
278 static int __devinit xl_probe(struct pci_dev *pdev,
279 const struct pci_device_id *ent)
280 {
281 struct net_device *dev ;
282 struct xl_private *xl_priv ;
283 static int card_no = -1 ;
284 int i ;
285
286 card_no++ ;
287
288 if (pci_enable_device(pdev)) {
289 return -ENODEV ;
290 }
291
292 pci_set_master(pdev);
293
294 if ((i = pci_request_regions(pdev,"3c359"))) {
295 return i ;
296 } ;
297
298 /*
299 * Allowing init_trdev to allocate the dev->priv structure will align xl_private
300 * on a 32 bytes boundary which we need for the rx/tx descriptors
301 */
302
303 dev = alloc_trdev(sizeof(struct xl_private)) ;
304 if (!dev) {
305 pci_release_regions(pdev) ;
306 return -ENOMEM ;
307 }
308 xl_priv = netdev_priv(dev);
309
310 #if XL_DEBUG
311 printk("pci_device: %p, dev:%p, dev->priv: %p, ba[0]: %10x, ba[1]:%10x\n",
312 pdev, dev, netdev_priv(dev), (unsigned int)pdev->resource[0].start, (unsigned int)pdev->resource[1].start);
313 #endif
314
315 dev->irq=pdev->irq;
316 dev->base_addr=pci_resource_start(pdev,0) ;
317 xl_priv->xl_card_name = pci_name(pdev);
318 xl_priv->xl_mmio=ioremap(pci_resource_start(pdev,1), XL_IO_SPACE);
319 xl_priv->pdev = pdev ;
320
321 if ((pkt_buf_sz[card_no] < 100) || (pkt_buf_sz[card_no] > 18000) )
322 xl_priv->pkt_buf_sz = PKT_BUF_SZ ;
323 else
324 xl_priv->pkt_buf_sz = pkt_buf_sz[card_no] ;
325
326 dev->mtu = xl_priv->pkt_buf_sz - TR_HLEN ;
327 xl_priv->xl_ring_speed = ringspeed[card_no] ;
328 xl_priv->xl_message_level = message_level[card_no] ;
329 xl_priv->xl_functional_addr[0] = xl_priv->xl_functional_addr[1] = xl_priv->xl_functional_addr[2] = xl_priv->xl_functional_addr[3] = 0 ;
330 xl_priv->xl_copy_all_options = 0 ;
331
332 if((i = xl_init(dev))) {
333 iounmap(xl_priv->xl_mmio) ;
334 free_netdev(dev) ;
335 pci_release_regions(pdev) ;
336 return i ;
337 }
338
339 dev->open=&xl_open;
340 dev->hard_start_xmit=&xl_xmit;
341 dev->change_mtu=&xl_change_mtu;
342 dev->stop=&xl_close;
343 dev->do_ioctl=NULL;
344 dev->set_multicast_list=&xl_set_rx_mode;
345 dev->get_stats=&xl_get_stats ;
346 dev->set_mac_address=&xl_set_mac_address ;
347 SET_NETDEV_DEV(dev, &pdev->dev);
348
349 pci_set_drvdata(pdev,dev) ;
350 if ((i = register_netdev(dev))) {
351 printk(KERN_ERR "3C359, register netdev failed\n") ;
352 pci_set_drvdata(pdev,NULL) ;
353 iounmap(xl_priv->xl_mmio) ;
354 free_netdev(dev) ;
355 pci_release_regions(pdev) ;
356 return i ;
357 }
358
359 printk(KERN_INFO "3C359: %s registered as: %s\n",xl_priv->xl_card_name,dev->name) ;
360
361 return 0;
362 }
363
364
365 static int __devinit xl_init(struct net_device *dev)
366 {
367 struct xl_private *xl_priv = netdev_priv(dev);
368
369 printk(KERN_INFO "%s \n", version);
370 printk(KERN_INFO "%s: I/O at %hx, MMIO at %p, using irq %d\n",
371 xl_priv->xl_card_name, (unsigned int)dev->base_addr ,xl_priv->xl_mmio, dev->irq);
372
373 spin_lock_init(&xl_priv->xl_lock) ;
374
375 return xl_hw_reset(dev) ;
376
377 }
378
379
380 /*
381 * Hardware reset. This needs to be a separate entity as we need to reset the card
382 * when we change the EEProm settings.
383 */
384
385 static int xl_hw_reset(struct net_device *dev)
386 {
387 struct xl_private *xl_priv = netdev_priv(dev);
388 u8 __iomem *xl_mmio = xl_priv->xl_mmio ;
389 unsigned long t ;
390 u16 i ;
391 u16 result_16 ;
392 u8 result_8 ;
393 u16 start ;
394 int j ;
395
396 /*
397 * Reset the card. If the card has got the microcode on board, we have
398 * missed the initialization interrupt, so we must always do this.
399 */
400
401 writew( GLOBAL_RESET, xl_mmio + MMIO_COMMAND ) ;
402
403 /*
404 * Must wait for cmdInProgress bit (12) to clear before continuing with
405 * card configuration.
406 */
407
408 t=jiffies;
409 while (readw(xl_mmio + MMIO_INTSTATUS) & INTSTAT_CMD_IN_PROGRESS) {
410 schedule();
411 if(jiffies-t > 40*HZ) {
412 printk(KERN_ERR "%s: 3COM 3C359 Velocity XL card not responding to global reset.\n", dev->name);
413 return -ENODEV;
414 }
415 }
416
417 /*
418 * Enable pmbar by setting bit in CPAttention
419 */
420
421 writel( (IO_BYTE_READ | CPATTENTION), xl_mmio + MMIO_MAC_ACCESS_CMD) ;
422 result_8 = readb(xl_mmio + MMIO_MACDATA) ;
423 result_8 = result_8 | CPA_PMBARVIS ;
424 writel( (IO_BYTE_WRITE | CPATTENTION), xl_mmio + MMIO_MAC_ACCESS_CMD) ;
425 writeb(result_8, xl_mmio + MMIO_MACDATA) ;
426
427 /*
428 * Read cpHold bit in pmbar, if cleared we have got Flashrom on board.
429 * If not, we need to upload the microcode to the card
430 */
431
432 writel( (IO_WORD_READ | PMBAR),xl_mmio + MMIO_MAC_ACCESS_CMD);
433
434 #if XL_DEBUG
435 printk(KERN_INFO "Read from PMBAR = %04x \n", readw(xl_mmio + MMIO_MACDATA)) ;
436 #endif
437
438 if ( readw( (xl_mmio + MMIO_MACDATA)) & PMB_CPHOLD ) {
439
440 /* Set PmBar, privateMemoryBase bits (8:2) to 0 */
441
442 writel( (IO_WORD_READ | PMBAR),xl_mmio + MMIO_MAC_ACCESS_CMD);
443 result_16 = readw(xl_mmio + MMIO_MACDATA) ;
444 result_16 = result_16 & ~((0x7F) << 2) ;
445 writel( (IO_WORD_WRITE | PMBAR), xl_mmio + MMIO_MAC_ACCESS_CMD) ;
446 writew(result_16,xl_mmio + MMIO_MACDATA) ;
447
448 /* Set CPAttention, memWrEn bit */
449
450 writel( (IO_BYTE_READ | CPATTENTION), xl_mmio + MMIO_MAC_ACCESS_CMD) ;
451 result_8 = readb(xl_mmio + MMIO_MACDATA) ;
452 result_8 = result_8 | CPA_MEMWREN ;
453 writel( (IO_BYTE_WRITE | CPATTENTION), xl_mmio + MMIO_MAC_ACCESS_CMD) ;
454 writeb(result_8, xl_mmio + MMIO_MACDATA) ;
455
456 /*
457 * Now to write the microcode into the shared ram
458 * The microcode must finish at position 0xFFFF, so we must subtract
459 * to get the start position for the code
460 */
461
462 start = (0xFFFF - (mc_size) + 1 ) ; /* Looks strange but ensures compiler only uses 16 bit unsigned int for this */
463
464 printk(KERN_INFO "3C359: Uploading Microcode: ");
465
466 for (i = start, j = 0; j < mc_size; i++, j++) {
467 writel(MEM_BYTE_WRITE | 0XD0000 | i, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
468 writeb(microcode[j],xl_mmio + MMIO_MACDATA) ;
469 if (j % 1024 == 0)
470 printk(".");
471 }
472 printk("\n") ;
473
474 for (i=0;i < 16; i++) {
475 writel( (MEM_BYTE_WRITE | 0xDFFF0) + i, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
476 writeb(microcode[mc_size - 16 + i], xl_mmio + MMIO_MACDATA) ;
477 }
478
479 /*
480 * Have to write the start address of the upload to FFF4, but
481 * the address must be >> 4. You do not want to know how long
482 * it took me to discover this.
483 */
484
485 writel(MEM_WORD_WRITE | 0xDFFF4, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
486 writew(start >> 4, xl_mmio + MMIO_MACDATA);
487
488 /* Clear the CPAttention, memWrEn Bit */
489
490 writel( (IO_BYTE_READ | CPATTENTION), xl_mmio + MMIO_MAC_ACCESS_CMD) ;
491 result_8 = readb(xl_mmio + MMIO_MACDATA) ;
492 result_8 = result_8 & ~CPA_MEMWREN ;
493 writel( (IO_BYTE_WRITE | CPATTENTION), xl_mmio + MMIO_MAC_ACCESS_CMD) ;
494 writeb(result_8, xl_mmio + MMIO_MACDATA) ;
495
496 /* Clear the cpHold bit in pmbar */
497
498 writel( (IO_WORD_READ | PMBAR),xl_mmio + MMIO_MAC_ACCESS_CMD);
499 result_16 = readw(xl_mmio + MMIO_MACDATA) ;
500 result_16 = result_16 & ~PMB_CPHOLD ;
501 writel( (IO_WORD_WRITE | PMBAR), xl_mmio + MMIO_MAC_ACCESS_CMD) ;
502 writew(result_16,xl_mmio + MMIO_MACDATA) ;
503
504
505 } /* If microcode upload required */
506
507 /*
508 * The card should now go though a self test procedure and get itself ready
509 * to be opened, we must wait for an srb response with the initialization
510 * information.
511 */
512
513 #if XL_DEBUG
514 printk(KERN_INFO "%s: Microcode uploaded, must wait for the self test to complete\n", dev->name);
515 #endif
516
517 writew(SETINDENABLE | 0xFFF, xl_mmio + MMIO_COMMAND) ;
518
519 t=jiffies;
520 while ( !(readw(xl_mmio + MMIO_INTSTATUS_AUTO) & INTSTAT_SRB) ) {
521 schedule();
522 if(jiffies-t > 15*HZ) {
523 printk(KERN_ERR "3COM 3C359 Velocity XL card not responding.\n");
524 return -ENODEV;
525 }
526 }
527
528 /*
529 * Write the RxBufArea with D000, RxEarlyThresh, TxStartThresh,
530 * DnPriReqThresh, read the tech docs if you want to know what
531 * values they need to be.
532 */
533
534 writel(MMIO_WORD_WRITE | RXBUFAREA, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
535 writew(0xD000, xl_mmio + MMIO_MACDATA) ;
536
537 writel(MMIO_WORD_WRITE | RXEARLYTHRESH, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
538 writew(0X0020, xl_mmio + MMIO_MACDATA) ;
539
540 writew( SETTXSTARTTHRESH | 0x40 , xl_mmio + MMIO_COMMAND) ;
541
542 writeb(0x04, xl_mmio + MMIO_DNBURSTTHRESH) ;
543 writeb(0x04, xl_mmio + DNPRIREQTHRESH) ;
544
545 /*
546 * Read WRBR to provide the location of the srb block, have to use byte reads not word reads.
547 * Tech docs have this wrong !!!!
548 */
549
550 writel(MMIO_BYTE_READ | WRBR, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
551 xl_priv->srb = readb(xl_mmio + MMIO_MACDATA) << 8 ;
552 writel( (MMIO_BYTE_READ | WRBR) + 1, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
553 xl_priv->srb = xl_priv->srb | readb(xl_mmio + MMIO_MACDATA) ;
554
555 #if XL_DEBUG
556 writel(IO_WORD_READ | SWITCHSETTINGS, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
557 if ( readw(xl_mmio + MMIO_MACDATA) & 2) {
558 printk(KERN_INFO "Default ring speed 4 mbps \n") ;
559 } else {
560 printk(KERN_INFO "Default ring speed 16 mbps \n") ;
561 }
562 printk(KERN_INFO "%s: xl_priv->srb = %04x\n",xl_priv->xl_card_name, xl_priv->srb);
563 #endif
564
565 return 0;
566 }
567
568 static int xl_open(struct net_device *dev)
569 {
570 struct xl_private *xl_priv=netdev_priv(dev);
571 u8 __iomem *xl_mmio = xl_priv->xl_mmio ;
572 u8 i ;
573 __le16 hwaddr[3] ; /* Should be u8[6] but we get word return values */
574 int open_err ;
575
576 u16 switchsettings, switchsettings_eeprom ;
577
578 if(request_irq(dev->irq, &xl_interrupt, IRQF_SHARED , "3c359", dev)) {
579 return -EAGAIN;
580 }
581
582 /*
583 * Read the information from the EEPROM that we need.
584 */
585
586 hwaddr[0] = cpu_to_le16(xl_ee_read(dev,0x10));
587 hwaddr[1] = cpu_to_le16(xl_ee_read(dev,0x11));
588 hwaddr[2] = cpu_to_le16(xl_ee_read(dev,0x12));
589
590 /* Ring speed */
591
592 switchsettings_eeprom = xl_ee_read(dev,0x08) ;
593 switchsettings = switchsettings_eeprom ;
594
595 if (xl_priv->xl_ring_speed != 0) {
596 if (xl_priv->xl_ring_speed == 4)
597 switchsettings = switchsettings | 0x02 ;
598 else
599 switchsettings = switchsettings & ~0x02 ;
600 }
601
602 /* Only write EEProm if there has been a change */
603 if (switchsettings != switchsettings_eeprom) {
604 xl_ee_write(dev,0x08,switchsettings) ;
605 /* Hardware reset after changing EEProm */
606 xl_hw_reset(dev) ;
607 }
608
609 memcpy(dev->dev_addr,hwaddr,dev->addr_len) ;
610
611 open_err = xl_open_hw(dev) ;
612
613 /*
614 * This really needs to be cleaned up with better error reporting.
615 */
616
617 if (open_err != 0) { /* Something went wrong with the open command */
618 if (open_err & 0x07) { /* Wrong speed, retry at different speed */
619 printk(KERN_WARNING "%s: Open Error, retrying at different ringspeed \n", dev->name) ;
620 switchsettings = switchsettings ^ 2 ;
621 xl_ee_write(dev,0x08,switchsettings) ;
622 xl_hw_reset(dev) ;
623 open_err = xl_open_hw(dev) ;
624 if (open_err != 0) {
625 printk(KERN_WARNING "%s: Open error returned a second time, we're bombing out now\n", dev->name);
626 free_irq(dev->irq,dev) ;
627 return -ENODEV ;
628 }
629 } else {
630 printk(KERN_WARNING "%s: Open Error = %04x\n", dev->name, open_err) ;
631 free_irq(dev->irq,dev) ;
632 return -ENODEV ;
633 }
634 }
635
636 /*
637 * Now to set up the Rx and Tx buffer structures
638 */
639 /* These MUST be on 8 byte boundaries */
640 xl_priv->xl_tx_ring = kzalloc((sizeof(struct xl_tx_desc) * XL_TX_RING_SIZE) + 7, GFP_DMA | GFP_KERNEL);
641 if (xl_priv->xl_tx_ring == NULL) {
642 printk(KERN_WARNING "%s: Not enough memory to allocate rx buffers.\n",
643 dev->name);
644 free_irq(dev->irq,dev);
645 return -ENOMEM;
646 }
647 xl_priv->xl_rx_ring = kzalloc((sizeof(struct xl_rx_desc) * XL_RX_RING_SIZE) +7, GFP_DMA | GFP_KERNEL);
648 if (xl_priv->xl_tx_ring == NULL) {
649 printk(KERN_WARNING "%s: Not enough memory to allocate rx buffers.\n",
650 dev->name);
651 free_irq(dev->irq,dev);
652 kfree(xl_priv->xl_tx_ring);
653 return -ENOMEM;
654 }
655
656 /* Setup Rx Ring */
657 for (i=0 ; i < XL_RX_RING_SIZE ; i++) {
658 struct sk_buff *skb ;
659
660 skb = dev_alloc_skb(xl_priv->pkt_buf_sz) ;
661 if (skb==NULL)
662 break ;
663
664 skb->dev = dev ;
665 xl_priv->xl_rx_ring[i].upfragaddr = cpu_to_le32(pci_map_single(xl_priv->pdev, skb->data,xl_priv->pkt_buf_sz, PCI_DMA_FROMDEVICE));
666 xl_priv->xl_rx_ring[i].upfraglen = cpu_to_le32(xl_priv->pkt_buf_sz) | RXUPLASTFRAG;
667 xl_priv->rx_ring_skb[i] = skb ;
668 }
669
670 if (i==0) {
671 printk(KERN_WARNING "%s: Not enough memory to allocate rx buffers. Adapter disabled \n",dev->name) ;
672 free_irq(dev->irq,dev) ;
673 return -EIO ;
674 }
675
676 xl_priv->rx_ring_no = i ;
677 xl_priv->rx_ring_tail = 0 ;
678 xl_priv->rx_ring_dma_addr = pci_map_single(xl_priv->pdev,xl_priv->xl_rx_ring, sizeof(struct xl_rx_desc) * XL_RX_RING_SIZE, PCI_DMA_TODEVICE) ;
679 for (i=0;i<(xl_priv->rx_ring_no-1);i++) {
680 xl_priv->xl_rx_ring[i].upnextptr = cpu_to_le32(xl_priv->rx_ring_dma_addr + (sizeof (struct xl_rx_desc) * (i+1)));
681 }
682 xl_priv->xl_rx_ring[i].upnextptr = 0 ;
683
684 writel(xl_priv->rx_ring_dma_addr, xl_mmio + MMIO_UPLISTPTR) ;
685
686 /* Setup Tx Ring */
687
688 xl_priv->tx_ring_dma_addr = pci_map_single(xl_priv->pdev,xl_priv->xl_tx_ring, sizeof(struct xl_tx_desc) * XL_TX_RING_SIZE,PCI_DMA_TODEVICE) ;
689
690 xl_priv->tx_ring_head = 1 ;
691 xl_priv->tx_ring_tail = 255 ; /* Special marker for first packet */
692 xl_priv->free_ring_entries = XL_TX_RING_SIZE ;
693
694 /*
695 * Setup the first dummy DPD entry for polling to start working.
696 */
697
698 xl_priv->xl_tx_ring[0].framestartheader = TXDPDEMPTY;
699 xl_priv->xl_tx_ring[0].buffer = 0 ;
700 xl_priv->xl_tx_ring[0].buffer_length = 0 ;
701 xl_priv->xl_tx_ring[0].dnnextptr = 0 ;
702
703 writel(xl_priv->tx_ring_dma_addr, xl_mmio + MMIO_DNLISTPTR) ;
704 writel(DNUNSTALL, xl_mmio + MMIO_COMMAND) ;
705 writel(UPUNSTALL, xl_mmio + MMIO_COMMAND) ;
706 writel(DNENABLE, xl_mmio + MMIO_COMMAND) ;
707 writeb(0x40, xl_mmio + MMIO_DNPOLL) ;
708
709 /*
710 * Enable interrupts on the card
711 */
712
713 writel(SETINTENABLE | INT_MASK, xl_mmio + MMIO_COMMAND) ;
714 writel(SETINDENABLE | INT_MASK, xl_mmio + MMIO_COMMAND) ;
715
716 netif_start_queue(dev) ;
717 return 0;
718
719 }
720
721 static int xl_open_hw(struct net_device *dev)
722 {
723 struct xl_private *xl_priv=netdev_priv(dev);
724 u8 __iomem *xl_mmio = xl_priv->xl_mmio ;
725 u16 vsoff ;
726 char ver_str[33];
727 int open_err ;
728 int i ;
729 unsigned long t ;
730
731 /*
732 * Okay, let's build up the Open.NIC srb command
733 *
734 */
735
736 writel( (MEM_BYTE_WRITE | 0xD0000 | xl_priv->srb), xl_mmio + MMIO_MAC_ACCESS_CMD) ;
737 writeb(OPEN_NIC, xl_mmio + MMIO_MACDATA) ;
738
739 /*
740 * Use this as a test byte, if it comes back with the same value, the command didn't work
741 */
742
743 writel( (MEM_BYTE_WRITE | 0xD0000 | xl_priv->srb)+ 2, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
744 writeb(0xff,xl_mmio + MMIO_MACDATA) ;
745
746 /* Open options */
747 writel( (MEM_BYTE_WRITE | 0xD0000 | xl_priv->srb) + 8, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
748 writeb(0x00, xl_mmio + MMIO_MACDATA) ;
749 writel( (MEM_BYTE_WRITE | 0xD0000 | xl_priv->srb) + 9, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
750 writeb(0x00, xl_mmio + MMIO_MACDATA) ;
751
752 /*
753 * Node address, be careful here, the docs say you can just put zeros here and it will use
754 * the hardware address, it doesn't, you must include the node address in the open command.
755 */
756
757 if (xl_priv->xl_laa[0]) { /* If using a LAA address */
758 for (i=10;i<16;i++) {
759 writel( (MEM_BYTE_WRITE | 0xD0000 | xl_priv->srb) + i, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
760 writeb(xl_priv->xl_laa[i-10],xl_mmio + MMIO_MACDATA) ;
761 }
762 memcpy(dev->dev_addr,xl_priv->xl_laa,dev->addr_len) ;
763 } else { /* Regular hardware address */
764 for (i=10;i<16;i++) {
765 writel( (MEM_BYTE_WRITE | 0xD0000 | xl_priv->srb) + i, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
766 writeb(dev->dev_addr[i-10], xl_mmio + MMIO_MACDATA) ;
767 }
768 }
769
770 /* Default everything else to 0 */
771 for (i = 16; i < 34; i++) {
772 writel( (MEM_BYTE_WRITE | 0xD0000 | xl_priv->srb) + i, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
773 writeb(0x00,xl_mmio + MMIO_MACDATA) ;
774 }
775
776 /*
777 * Set the csrb bit in the MISR register
778 */
779
780 xl_wait_misr_flags(dev) ;
781 writel(MEM_BYTE_WRITE | MF_CSRB, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
782 writeb(0xFF, xl_mmio + MMIO_MACDATA) ;
783 writel(MMIO_BYTE_WRITE | MISR_SET, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
784 writeb(MISR_CSRB , xl_mmio + MMIO_MACDATA) ;
785
786 /*
787 * Now wait for the command to run
788 */
789
790 t=jiffies;
791 while (! (readw(xl_mmio + MMIO_INTSTATUS) & INTSTAT_SRB)) {
792 schedule();
793 if(jiffies-t > 40*HZ) {
794 printk(KERN_ERR "3COM 3C359 Velocity XL card not responding.\n");
795 break ;
796 }
797 }
798
799 /*
800 * Let's interpret the open response
801 */
802
803 writel( (MEM_BYTE_READ | 0xD0000 | xl_priv->srb)+2, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
804 if (readb(xl_mmio + MMIO_MACDATA)!=0) {
805 open_err = readb(xl_mmio + MMIO_MACDATA) << 8 ;
806 writel( (MEM_BYTE_READ | 0xD0000 | xl_priv->srb) + 7, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
807 open_err |= readb(xl_mmio + MMIO_MACDATA) ;
808 return open_err ;
809 } else {
810 writel( (MEM_WORD_READ | 0xD0000 | xl_priv->srb) + 8, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
811 xl_priv->asb = swab16(readw(xl_mmio + MMIO_MACDATA)) ;
812 printk(KERN_INFO "%s: Adapter Opened Details: ",dev->name) ;
813 printk("ASB: %04x",xl_priv->asb ) ;
814 writel( (MEM_WORD_READ | 0xD0000 | xl_priv->srb) + 10, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
815 printk(", SRB: %04x",swab16(readw(xl_mmio + MMIO_MACDATA)) ) ;
816
817 writel( (MEM_WORD_READ | 0xD0000 | xl_priv->srb) + 12, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
818 xl_priv->arb = swab16(readw(xl_mmio + MMIO_MACDATA)) ;
819 printk(", ARB: %04x \n",xl_priv->arb ) ;
820 writel( (MEM_WORD_READ | 0xD0000 | xl_priv->srb) + 14, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
821 vsoff = swab16(readw(xl_mmio + MMIO_MACDATA)) ;
822
823 /*
824 * Interesting, sending the individual characters directly to printk was causing klogd to use
825 * use 100% of processor time, so we build up the string and print that instead.
826 */
827
828 for (i=0;i<0x20;i++) {
829 writel( (MEM_BYTE_READ | 0xD0000 | vsoff) + i, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
830 ver_str[i] = readb(xl_mmio + MMIO_MACDATA) ;
831 }
832 ver_str[i] = '\0' ;
833 printk(KERN_INFO "%s: Microcode version String: %s \n",dev->name,ver_str);
834 }
835
836 /*
837 * Issue the AckInterrupt
838 */
839 writew(ACK_INTERRUPT | SRBRACK | LATCH_ACK, xl_mmio + MMIO_COMMAND) ;
840
841 return 0 ;
842 }
843
844 /*
845 * There are two ways of implementing rx on the 359 NIC, either
846 * interrupt driven or polling. We are going to uses interrupts,
847 * it is the easier way of doing things.
848 *
849 * The Rx works with a ring of Rx descriptors. At initialise time the ring
850 * entries point to the next entry except for the last entry in the ring
851 * which points to 0. The card is programmed with the location of the first
852 * available descriptor and keeps reading the next_ptr until next_ptr is set
853 * to 0. Hopefully with a ring size of 16 the card will never get to read a next_ptr
854 * of 0. As the Rx interrupt is received we copy the frame up to the protocol layers
855 * and then point the end of the ring to our current position and point our current
856 * position to 0, therefore making the current position the last position on the ring.
857 * The last position on the ring therefore loops continually loops around the rx ring.
858 *
859 * rx_ring_tail is the position on the ring to process next. (Think of a snake, the head
860 * expands as the card adds new packets and we go around eating the tail processing the
861 * packets.)
862 *
863 * Undoubtably it could be streamlined and improved upon, but at the moment it works
864 * and the fast path through the routine is fine.
865 *
866 * adv_rx_ring could be inlined to increase performance, but its called a *lot* of times
867 * in xl_rx so would increase the size of the function significantly.
868 */
869
870 static void adv_rx_ring(struct net_device *dev) /* Advance rx_ring, cut down on bloat in xl_rx */
871 {
872 struct xl_private *xl_priv=netdev_priv(dev);
873 int n = xl_priv->rx_ring_tail;
874 int prev_ring_loc;
875
876 prev_ring_loc = (n + XL_RX_RING_SIZE - 1) & (XL_RX_RING_SIZE - 1);
877 xl_priv->xl_rx_ring[prev_ring_loc].upnextptr = cpu_to_le32(xl_priv->rx_ring_dma_addr + (sizeof (struct xl_rx_desc) * n));
878 xl_priv->xl_rx_ring[n].framestatus = 0;
879 xl_priv->xl_rx_ring[n].upnextptr = 0;
880 xl_priv->rx_ring_tail++;
881 xl_priv->rx_ring_tail &= (XL_RX_RING_SIZE-1);
882 }
883
884 static void xl_rx(struct net_device *dev)
885 {
886 struct xl_private *xl_priv=netdev_priv(dev);
887 u8 __iomem * xl_mmio = xl_priv->xl_mmio ;
888 struct sk_buff *skb, *skb2 ;
889 int frame_length = 0, copy_len = 0 ;
890 int temp_ring_loc ;
891
892 /*
893 * Receive the next frame, loop around the ring until all frames
894 * have been received.
895 */
896
897 while (xl_priv->xl_rx_ring[xl_priv->rx_ring_tail].framestatus & (RXUPDCOMPLETE | RXUPDFULL) ) { /* Descriptor to process */
898
899 if (xl_priv->xl_rx_ring[xl_priv->rx_ring_tail].framestatus & RXUPDFULL ) { /* UpdFull, Multiple Descriptors used for the frame */
900
901 /*
902 * This is a pain, you need to go through all the descriptors until the last one
903 * for this frame to find the framelength
904 */
905
906 temp_ring_loc = xl_priv->rx_ring_tail ;
907
908 while (xl_priv->xl_rx_ring[temp_ring_loc].framestatus & RXUPDFULL ) {
909 temp_ring_loc++ ;
910 temp_ring_loc &= (XL_RX_RING_SIZE-1) ;
911 }
912
913 frame_length = le32_to_cpu(xl_priv->xl_rx_ring[temp_ring_loc].framestatus) & 0x7FFF;
914
915 skb = dev_alloc_skb(frame_length) ;
916
917 if (skb==NULL) { /* No memory for frame, still need to roll forward the rx ring */
918 printk(KERN_WARNING "%s: dev_alloc_skb failed - multi buffer !\n", dev->name) ;
919 while (xl_priv->rx_ring_tail != temp_ring_loc)
920 adv_rx_ring(dev) ;
921
922 adv_rx_ring(dev) ; /* One more time just for luck :) */
923 xl_priv->xl_stats.rx_dropped++ ;
924
925 writel(ACK_INTERRUPT | UPCOMPACK | LATCH_ACK , xl_mmio + MMIO_COMMAND) ;
926 return ;
927 }
928
929 while (xl_priv->rx_ring_tail != temp_ring_loc) {
930 copy_len = le32_to_cpu(xl_priv->xl_rx_ring[xl_priv->rx_ring_tail].upfraglen) & 0x7FFF;
931 frame_length -= copy_len ;
932 pci_dma_sync_single_for_cpu(xl_priv->pdev,le32_to_cpu(xl_priv->xl_rx_ring[xl_priv->rx_ring_tail].upfragaddr),xl_priv->pkt_buf_sz,PCI_DMA_FROMDEVICE);
933 skb_copy_from_linear_data(xl_priv->rx_ring_skb[xl_priv->rx_ring_tail],
934 skb_put(skb, copy_len),
935 copy_len);
936 pci_dma_sync_single_for_device(xl_priv->pdev,le32_to_cpu(xl_priv->xl_rx_ring[xl_priv->rx_ring_tail].upfragaddr),xl_priv->pkt_buf_sz,PCI_DMA_FROMDEVICE);
937 adv_rx_ring(dev) ;
938 }
939
940 /* Now we have found the last fragment */
941 pci_dma_sync_single_for_cpu(xl_priv->pdev,le32_to_cpu(xl_priv->xl_rx_ring[xl_priv->rx_ring_tail].upfragaddr),xl_priv->pkt_buf_sz,PCI_DMA_FROMDEVICE);
942 skb_copy_from_linear_data(xl_priv->rx_ring_skb[xl_priv->rx_ring_tail],
943 skb_put(skb,copy_len), frame_length);
944 /* memcpy(skb_put(skb,frame_length), bus_to_virt(xl_priv->xl_rx_ring[xl_priv->rx_ring_tail].upfragaddr), frame_length) ; */
945 pci_dma_sync_single_for_device(xl_priv->pdev,le32_to_cpu(xl_priv->xl_rx_ring[xl_priv->rx_ring_tail].upfragaddr),xl_priv->pkt_buf_sz,PCI_DMA_FROMDEVICE);
946 adv_rx_ring(dev) ;
947 skb->protocol = tr_type_trans(skb,dev) ;
948 netif_rx(skb) ;
949
950 } else { /* Single Descriptor Used, simply swap buffers over, fast path */
951
952 frame_length = le32_to_cpu(xl_priv->xl_rx_ring[xl_priv->rx_ring_tail].framestatus) & 0x7FFF;
953
954 skb = dev_alloc_skb(xl_priv->pkt_buf_sz) ;
955
956 if (skb==NULL) { /* Still need to fix the rx ring */
957 printk(KERN_WARNING "%s: dev_alloc_skb failed in rx, single buffer \n",dev->name) ;
958 adv_rx_ring(dev) ;
959 xl_priv->xl_stats.rx_dropped++ ;
960 writel(ACK_INTERRUPT | UPCOMPACK | LATCH_ACK , xl_mmio + MMIO_COMMAND) ;
961 return ;
962 }
963
964 skb2 = xl_priv->rx_ring_skb[xl_priv->rx_ring_tail] ;
965 pci_unmap_single(xl_priv->pdev, le32_to_cpu(xl_priv->xl_rx_ring[xl_priv->rx_ring_tail].upfragaddr), xl_priv->pkt_buf_sz,PCI_DMA_FROMDEVICE) ;
966 skb_put(skb2, frame_length) ;
967 skb2->protocol = tr_type_trans(skb2,dev) ;
968
969 xl_priv->rx_ring_skb[xl_priv->rx_ring_tail] = skb ;
970 xl_priv->xl_rx_ring[xl_priv->rx_ring_tail].upfragaddr = cpu_to_le32(pci_map_single(xl_priv->pdev,skb->data,xl_priv->pkt_buf_sz, PCI_DMA_FROMDEVICE));
971 xl_priv->xl_rx_ring[xl_priv->rx_ring_tail].upfraglen = cpu_to_le32(xl_priv->pkt_buf_sz) | RXUPLASTFRAG;
972 adv_rx_ring(dev) ;
973 xl_priv->xl_stats.rx_packets++ ;
974 xl_priv->xl_stats.rx_bytes += frame_length ;
975
976 netif_rx(skb2) ;
977 } /* if multiple buffers */
978 dev->last_rx = jiffies ;
979 } /* while packet to do */
980
981 /* Clear the updComplete interrupt */
982 writel(ACK_INTERRUPT | UPCOMPACK | LATCH_ACK , xl_mmio + MMIO_COMMAND) ;
983 return ;
984 }
985
986 /*
987 * This is ruthless, it doesn't care what state the card is in it will
988 * completely reset the adapter.
989 */
990
991 static void xl_reset(struct net_device *dev)
992 {
993 struct xl_private *xl_priv=netdev_priv(dev);
994 u8 __iomem * xl_mmio = xl_priv->xl_mmio ;
995 unsigned long t;
996
997 writew( GLOBAL_RESET, xl_mmio + MMIO_COMMAND ) ;
998
999 /*
1000 * Must wait for cmdInProgress bit (12) to clear before continuing with
1001 * card configuration.
1002 */
1003
1004 t=jiffies;
1005 while (readw(xl_mmio + MMIO_INTSTATUS) & INTSTAT_CMD_IN_PROGRESS) {
1006 if(jiffies-t > 40*HZ) {
1007 printk(KERN_ERR "3COM 3C359 Velocity XL card not responding.\n");
1008 break ;
1009 }
1010 }
1011
1012 }
1013
1014 static void xl_freemem(struct net_device *dev)
1015 {
1016 struct xl_private *xl_priv=netdev_priv(dev);
1017 int i ;
1018
1019 for (i=0;i<XL_RX_RING_SIZE;i++) {
1020 dev_kfree_skb_irq(xl_priv->rx_ring_skb[xl_priv->rx_ring_tail]) ;
1021 pci_unmap_single(xl_priv->pdev,le32_to_cpu(xl_priv->xl_rx_ring[xl_priv->rx_ring_tail].upfragaddr),xl_priv->pkt_buf_sz, PCI_DMA_FROMDEVICE);
1022 xl_priv->rx_ring_tail++ ;
1023 xl_priv->rx_ring_tail &= XL_RX_RING_SIZE-1;
1024 }
1025
1026 /* unmap ring */
1027 pci_unmap_single(xl_priv->pdev,xl_priv->rx_ring_dma_addr, sizeof(struct xl_rx_desc) * XL_RX_RING_SIZE, PCI_DMA_FROMDEVICE) ;
1028
1029 pci_unmap_single(xl_priv->pdev,xl_priv->tx_ring_dma_addr, sizeof(struct xl_tx_desc) * XL_TX_RING_SIZE, PCI_DMA_TODEVICE) ;
1030
1031 kfree(xl_priv->xl_rx_ring) ;
1032 kfree(xl_priv->xl_tx_ring) ;
1033
1034 return ;
1035 }
1036
1037 static irqreturn_t xl_interrupt(int irq, void *dev_id)
1038 {
1039 struct net_device *dev = (struct net_device *)dev_id;
1040 struct xl_private *xl_priv =netdev_priv(dev);
1041 u8 __iomem * xl_mmio = xl_priv->xl_mmio ;
1042 u16 intstatus, macstatus ;
1043
1044 intstatus = readw(xl_mmio + MMIO_INTSTATUS) ;
1045
1046 if (!(intstatus & 1)) /* We didn't generate the interrupt */
1047 return IRQ_NONE;
1048
1049 spin_lock(&xl_priv->xl_lock) ;
1050
1051 /*
1052 * Process the interrupt
1053 */
1054 /*
1055 * Something fishy going on here, we shouldn't get 0001 ints, not fatal though.
1056 */
1057 if (intstatus == 0x0001) {
1058 writel(ACK_INTERRUPT | LATCH_ACK, xl_mmio + MMIO_COMMAND) ;
1059 printk(KERN_INFO "%s: 00001 int received \n",dev->name) ;
1060 } else {
1061 if (intstatus & (HOSTERRINT | SRBRINT | ARBCINT | UPCOMPINT | DNCOMPINT | HARDERRINT | (1<<8) | TXUNDERRUN | ASBFINT)) {
1062
1063 /*
1064 * Host Error.
1065 * It may be possible to recover from this, but usually it means something
1066 * is seriously fubar, so we just close the adapter.
1067 */
1068
1069 if (intstatus & HOSTERRINT) {
1070 printk(KERN_WARNING "%s: Host Error, performing global reset, intstatus = %04x \n",dev->name,intstatus) ;
1071 writew( GLOBAL_RESET, xl_mmio + MMIO_COMMAND ) ;
1072 printk(KERN_WARNING "%s: Resetting hardware: \n", dev->name);
1073 netif_stop_queue(dev) ;
1074 xl_freemem(dev) ;
1075 free_irq(dev->irq,dev);
1076 xl_reset(dev) ;
1077 writel(ACK_INTERRUPT | LATCH_ACK, xl_mmio + MMIO_COMMAND) ;
1078 spin_unlock(&xl_priv->xl_lock) ;
1079 return IRQ_HANDLED;
1080 } /* Host Error */
1081
1082 if (intstatus & SRBRINT ) { /* Srbc interrupt */
1083 writel(ACK_INTERRUPT | SRBRACK | LATCH_ACK, xl_mmio + MMIO_COMMAND) ;
1084 if (xl_priv->srb_queued)
1085 xl_srb_bh(dev) ;
1086 } /* SRBR Interrupt */
1087
1088 if (intstatus & TXUNDERRUN) { /* Issue DnReset command */
1089 writel(DNRESET, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
1090 while (readw(xl_mmio + MMIO_INTSTATUS) & INTSTAT_CMD_IN_PROGRESS) { /* Wait for command to run */
1091 /* !!! FIX-ME !!!!
1092 Must put a timeout check here ! */
1093 /* Empty Loop */
1094 }
1095 printk(KERN_WARNING "%s: TX Underrun received \n",dev->name) ;
1096 writel(ACK_INTERRUPT | LATCH_ACK, xl_mmio + MMIO_COMMAND) ;
1097 } /* TxUnderRun */
1098
1099 if (intstatus & ARBCINT ) { /* Arbc interrupt */
1100 xl_arb_cmd(dev) ;
1101 } /* Arbc */
1102
1103 if (intstatus & ASBFINT) {
1104 if (xl_priv->asb_queued == 1) {
1105 xl_asb_cmd(dev) ;
1106 } else if (xl_priv->asb_queued == 2) {
1107 xl_asb_bh(dev) ;
1108 } else {
1109 writel(ACK_INTERRUPT | LATCH_ACK | ASBFACK, xl_mmio + MMIO_COMMAND) ;
1110 }
1111 } /* Asbf */
1112
1113 if (intstatus & UPCOMPINT ) /* UpComplete */
1114 xl_rx(dev) ;
1115
1116 if (intstatus & DNCOMPINT ) /* DnComplete */
1117 xl_dn_comp(dev) ;
1118
1119 if (intstatus & HARDERRINT ) { /* Hardware error */
1120 writel(MMIO_WORD_READ | MACSTATUS, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
1121 macstatus = readw(xl_mmio + MMIO_MACDATA) ;
1122 printk(KERN_WARNING "%s: MacStatusError, details: ", dev->name);
1123 if (macstatus & (1<<14))
1124 printk(KERN_WARNING "tchk error: Unrecoverable error \n") ;
1125 if (macstatus & (1<<3))
1126 printk(KERN_WARNING "eint error: Internal watchdog timer expired \n") ;
1127 if (macstatus & (1<<2))
1128 printk(KERN_WARNING "aint error: Host tried to perform invalid operation \n") ;
1129 printk(KERN_WARNING "Instatus = %02x, macstatus = %02x\n",intstatus,macstatus) ;
1130 printk(KERN_WARNING "%s: Resetting hardware: \n", dev->name);
1131 netif_stop_queue(dev) ;
1132 xl_freemem(dev) ;
1133 free_irq(dev->irq,dev);
1134 unregister_netdev(dev) ;
1135 free_netdev(dev) ;
1136 xl_reset(dev) ;
1137 writel(ACK_INTERRUPT | LATCH_ACK, xl_mmio + MMIO_COMMAND) ;
1138 spin_unlock(&xl_priv->xl_lock) ;
1139 return IRQ_HANDLED;
1140 }
1141 } else {
1142 printk(KERN_WARNING "%s: Received Unknown interrupt : %04x \n", dev->name, intstatus) ;
1143 writel(ACK_INTERRUPT | LATCH_ACK, xl_mmio + MMIO_COMMAND) ;
1144 }
1145 }
1146
1147 /* Turn interrupts back on */
1148
1149 writel( SETINDENABLE | INT_MASK, xl_mmio + MMIO_COMMAND) ;
1150 writel( SETINTENABLE | INT_MASK, xl_mmio + MMIO_COMMAND) ;
1151
1152 spin_unlock(&xl_priv->xl_lock) ;
1153 return IRQ_HANDLED;
1154 }
1155
1156 /*
1157 * Tx - Polling configuration
1158 */
1159
1160 static int xl_xmit(struct sk_buff *skb, struct net_device *dev)
1161 {
1162 struct xl_private *xl_priv=netdev_priv(dev);
1163 struct xl_tx_desc *txd ;
1164 int tx_head, tx_tail, tx_prev ;
1165 unsigned long flags ;
1166
1167 spin_lock_irqsave(&xl_priv->xl_lock,flags) ;
1168
1169 netif_stop_queue(dev) ;
1170
1171 if (xl_priv->free_ring_entries > 1 ) {
1172 /*
1173 * Set up the descriptor for the packet
1174 */
1175 tx_head = xl_priv->tx_ring_head ;
1176 tx_tail = xl_priv->tx_ring_tail ;
1177
1178 txd = &(xl_priv->xl_tx_ring[tx_head]) ;
1179 txd->dnnextptr = 0 ;
1180 txd->framestartheader = cpu_to_le32(skb->len) | TXDNINDICATE;
1181 txd->buffer = cpu_to_le32(pci_map_single(xl_priv->pdev, skb->data, skb->len, PCI_DMA_TODEVICE));
1182 txd->buffer_length = cpu_to_le32(skb->len) | TXDNFRAGLAST;
1183 xl_priv->tx_ring_skb[tx_head] = skb ;
1184 xl_priv->xl_stats.tx_packets++ ;
1185 xl_priv->xl_stats.tx_bytes += skb->len ;
1186
1187 /*
1188 * Set the nextptr of the previous descriptor equal to this descriptor, add XL_TX_RING_SIZE -1
1189 * to ensure no negative numbers in unsigned locations.
1190 */
1191
1192 tx_prev = (xl_priv->tx_ring_head + XL_TX_RING_SIZE - 1) & (XL_TX_RING_SIZE - 1) ;
1193
1194 xl_priv->tx_ring_head++ ;
1195 xl_priv->tx_ring_head &= (XL_TX_RING_SIZE - 1) ;
1196 xl_priv->free_ring_entries-- ;
1197
1198 xl_priv->xl_tx_ring[tx_prev].dnnextptr = cpu_to_le32(xl_priv->tx_ring_dma_addr + (sizeof (struct xl_tx_desc) * tx_head));
1199
1200 /* Sneaky, by doing a read on DnListPtr we can force the card to poll on the DnNextPtr */
1201 /* readl(xl_mmio + MMIO_DNLISTPTR) ; */
1202
1203 netif_wake_queue(dev) ;
1204
1205 spin_unlock_irqrestore(&xl_priv->xl_lock,flags) ;
1206
1207 return 0;
1208 } else {
1209 spin_unlock_irqrestore(&xl_priv->xl_lock,flags) ;
1210 return 1;
1211 }
1212
1213 }
1214
1215 /*
1216 * The NIC has told us that a packet has been downloaded onto the card, we must
1217 * find out which packet it has done, clear the skb and information for the packet
1218 * then advance around the ring for all tranmitted packets
1219 */
1220
1221 static void xl_dn_comp(struct net_device *dev)
1222 {
1223 struct xl_private *xl_priv=netdev_priv(dev);
1224 u8 __iomem * xl_mmio = xl_priv->xl_mmio ;
1225 struct xl_tx_desc *txd ;
1226
1227
1228 if (xl_priv->tx_ring_tail == 255) {/* First time */
1229 xl_priv->xl_tx_ring[0].framestartheader = 0 ;
1230 xl_priv->xl_tx_ring[0].dnnextptr = 0 ;
1231 xl_priv->tx_ring_tail = 1 ;
1232 }
1233
1234 while (xl_priv->xl_tx_ring[xl_priv->tx_ring_tail].framestartheader & TXDNCOMPLETE ) {
1235 txd = &(xl_priv->xl_tx_ring[xl_priv->tx_ring_tail]) ;
1236 pci_unmap_single(xl_priv->pdev, le32_to_cpu(txd->buffer), xl_priv->tx_ring_skb[xl_priv->tx_ring_tail]->len, PCI_DMA_TODEVICE);
1237 txd->framestartheader = 0 ;
1238 txd->buffer = cpu_to_le32(0xdeadbeef);
1239 txd->buffer_length = 0 ;
1240 dev_kfree_skb_irq(xl_priv->tx_ring_skb[xl_priv->tx_ring_tail]) ;
1241 xl_priv->tx_ring_tail++ ;
1242 xl_priv->tx_ring_tail &= (XL_TX_RING_SIZE - 1) ;
1243 xl_priv->free_ring_entries++ ;
1244 }
1245
1246 netif_wake_queue(dev) ;
1247
1248 writel(ACK_INTERRUPT | DNCOMPACK | LATCH_ACK , xl_mmio + MMIO_COMMAND) ;
1249 }
1250
1251 /*
1252 * Close the adapter properly.
1253 * This srb reply cannot be handled from interrupt context as we have
1254 * to free the interrupt from the driver.
1255 */
1256
1257 static int xl_close(struct net_device *dev)
1258 {
1259 struct xl_private *xl_priv = netdev_priv(dev);
1260 u8 __iomem * xl_mmio = xl_priv->xl_mmio ;
1261 unsigned long t ;
1262
1263 netif_stop_queue(dev) ;
1264
1265 /*
1266 * Close the adapter, need to stall the rx and tx queues.
1267 */
1268
1269 writew(DNSTALL, xl_mmio + MMIO_COMMAND) ;
1270 t=jiffies;
1271 while (readw(xl_mmio + MMIO_INTSTATUS) & INTSTAT_CMD_IN_PROGRESS) {
1272 schedule();
1273 if(jiffies-t > 10*HZ) {
1274 printk(KERN_ERR "%s: 3COM 3C359 Velocity XL-DNSTALL not responding.\n", dev->name);
1275 break ;
1276 }
1277 }
1278 writew(DNDISABLE, xl_mmio + MMIO_COMMAND) ;
1279 t=jiffies;
1280 while (readw(xl_mmio + MMIO_INTSTATUS) & INTSTAT_CMD_IN_PROGRESS) {
1281 schedule();
1282 if(jiffies-t > 10*HZ) {
1283 printk(KERN_ERR "%s: 3COM 3C359 Velocity XL-DNDISABLE not responding.\n", dev->name);
1284 break ;
1285 }
1286 }
1287 writew(UPSTALL, xl_mmio + MMIO_COMMAND) ;
1288 t=jiffies;
1289 while (readw(xl_mmio + MMIO_INTSTATUS) & INTSTAT_CMD_IN_PROGRESS) {
1290 schedule();
1291 if(jiffies-t > 10*HZ) {
1292 printk(KERN_ERR "%s: 3COM 3C359 Velocity XL-UPSTALL not responding.\n", dev->name);
1293 break ;
1294 }
1295 }
1296
1297 /* Turn off interrupts, we will still get the indication though
1298 * so we can trap it
1299 */
1300
1301 writel(SETINTENABLE, xl_mmio + MMIO_COMMAND) ;
1302
1303 xl_srb_cmd(dev,CLOSE_NIC) ;
1304
1305 t=jiffies;
1306 while (!(readw(xl_mmio + MMIO_INTSTATUS) & INTSTAT_SRB)) {
1307 schedule();
1308 if(jiffies-t > 10*HZ) {
1309 printk(KERN_ERR "%s: 3COM 3C359 Velocity XL-CLOSENIC not responding.\n", dev->name);
1310 break ;
1311 }
1312 }
1313 /* Read the srb response from the adapter */
1314
1315 writel(MEM_BYTE_READ | 0xd0000 | xl_priv->srb, xl_mmio + MMIO_MAC_ACCESS_CMD);
1316 if (readb(xl_mmio + MMIO_MACDATA) != CLOSE_NIC) {
1317 printk(KERN_INFO "%s: CLOSE_NIC did not get a CLOSE_NIC response \n",dev->name) ;
1318 } else {
1319 writel((MEM_BYTE_READ | 0xd0000 | xl_priv->srb) +2, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
1320 if (readb(xl_mmio + MMIO_MACDATA)==0) {
1321 printk(KERN_INFO "%s: Adapter has been closed \n",dev->name) ;
1322 writew(ACK_INTERRUPT | SRBRACK | LATCH_ACK, xl_mmio + MMIO_COMMAND) ;
1323
1324 xl_freemem(dev) ;
1325 free_irq(dev->irq,dev) ;
1326 } else {
1327 printk(KERN_INFO "%s: Close nic command returned error code %02x\n",dev->name, readb(xl_mmio + MMIO_MACDATA)) ;
1328 }
1329 }
1330
1331 /* Reset the upload and download logic */
1332
1333 writew(UPRESET, xl_mmio + MMIO_COMMAND) ;
1334 t=jiffies;
1335 while (readw(xl_mmio + MMIO_INTSTATUS) & INTSTAT_CMD_IN_PROGRESS) {
1336 schedule();
1337 if(jiffies-t > 10*HZ) {
1338 printk(KERN_ERR "%s: 3COM 3C359 Velocity XL-UPRESET not responding.\n", dev->name);
1339 break ;
1340 }
1341 }
1342 writew(DNRESET, xl_mmio + MMIO_COMMAND) ;
1343 t=jiffies;
1344 while (readw(xl_mmio + MMIO_INTSTATUS) & INTSTAT_CMD_IN_PROGRESS) {
1345 schedule();
1346 if(jiffies-t > 10*HZ) {
1347 printk(KERN_ERR "%s: 3COM 3C359 Velocity XL-DNRESET not responding.\n", dev->name);
1348 break ;
1349 }
1350 }
1351 xl_hw_reset(dev) ;
1352 return 0 ;
1353 }
1354
1355 static void xl_set_rx_mode(struct net_device *dev)
1356 {
1357 struct xl_private *xl_priv = netdev_priv(dev);
1358 struct dev_mc_list *dmi ;
1359 unsigned char dev_mc_address[4] ;
1360 u16 options ;
1361 int i ;
1362
1363 if (dev->flags & IFF_PROMISC)
1364 options = 0x0004 ;
1365 else
1366 options = 0x0000 ;
1367
1368 if (options ^ xl_priv->xl_copy_all_options) { /* Changed, must send command */
1369 xl_priv->xl_copy_all_options = options ;
1370 xl_srb_cmd(dev, SET_RECEIVE_MODE) ;
1371 return ;
1372 }
1373
1374 dev_mc_address[0] = dev_mc_address[1] = dev_mc_address[2] = dev_mc_address[3] = 0 ;
1375
1376 for (i=0,dmi=dev->mc_list;i < dev->mc_count; i++,dmi = dmi->next) {
1377 dev_mc_address[0] |= dmi->dmi_addr[2] ;
1378 dev_mc_address[1] |= dmi->dmi_addr[3] ;
1379 dev_mc_address[2] |= dmi->dmi_addr[4] ;
1380 dev_mc_address[3] |= dmi->dmi_addr[5] ;
1381 }
1382
1383 if (memcmp(xl_priv->xl_functional_addr,dev_mc_address,4) != 0) { /* Options have changed, run the command */
1384 memcpy(xl_priv->xl_functional_addr, dev_mc_address,4) ;
1385 xl_srb_cmd(dev, SET_FUNC_ADDRESS) ;
1386 }
1387 return ;
1388 }
1389
1390
1391 /*
1392 * We issued an srb command and now we must read
1393 * the response from the completed command.
1394 */
1395
1396 static void xl_srb_bh(struct net_device *dev)
1397 {
1398 struct xl_private *xl_priv = netdev_priv(dev);
1399 u8 __iomem * xl_mmio = xl_priv->xl_mmio ;
1400 u8 srb_cmd, ret_code ;
1401 int i ;
1402
1403 writel(MEM_BYTE_READ | 0xd0000 | xl_priv->srb, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
1404 srb_cmd = readb(xl_mmio + MMIO_MACDATA) ;
1405 writel((MEM_BYTE_READ | 0xd0000 | xl_priv->srb) +2, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
1406 ret_code = readb(xl_mmio + MMIO_MACDATA) ;
1407
1408 /* Ret_code is standard across all commands */
1409
1410 switch (ret_code) {
1411 case 1:
1412 printk(KERN_INFO "%s: Command: %d - Invalid Command code\n",dev->name,srb_cmd) ;
1413 break ;
1414 case 4:
1415 printk(KERN_INFO "%s: Command: %d - Adapter is closed, must be open for this command \n",dev->name,srb_cmd) ;
1416 break ;
1417
1418 case 6:
1419 printk(KERN_INFO "%s: Command: %d - Options Invalid for command \n",dev->name,srb_cmd) ;
1420 break ;
1421
1422 case 0: /* Successful command execution */
1423 switch (srb_cmd) {
1424 case READ_LOG: /* Returns 14 bytes of data from the NIC */
1425 if(xl_priv->xl_message_level)
1426 printk(KERN_INFO "%s: READ.LOG 14 bytes of data ",dev->name) ;
1427 /*
1428 * We still have to read the log even if message_level = 0 and we don't want
1429 * to see it
1430 */
1431 for (i=0;i<14;i++) {
1432 writel(MEM_BYTE_READ | 0xd0000 | xl_priv->srb | i, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
1433 if(xl_priv->xl_message_level)
1434 printk("%02x:",readb(xl_mmio + MMIO_MACDATA)) ;
1435 }
1436 printk("\n") ;
1437 break ;
1438 case SET_FUNC_ADDRESS:
1439 if(xl_priv->xl_message_level)
1440 printk(KERN_INFO "%s: Functional Address Set \n",dev->name) ;
1441 break ;
1442 case CLOSE_NIC:
1443 if(xl_priv->xl_message_level)
1444 printk(KERN_INFO "%s: Received CLOSE_NIC interrupt in interrupt handler \n",dev->name) ;
1445 break ;
1446 case SET_MULTICAST_MODE:
1447 if(xl_priv->xl_message_level)
1448 printk(KERN_INFO "%s: Multicast options successfully changed\n",dev->name) ;
1449 break ;
1450 case SET_RECEIVE_MODE:
1451 if(xl_priv->xl_message_level) {
1452 if (xl_priv->xl_copy_all_options == 0x0004)
1453 printk(KERN_INFO "%s: Entering promiscuous mode \n", dev->name) ;
1454 else
1455 printk(KERN_INFO "%s: Entering normal receive mode \n",dev->name) ;
1456 }
1457 break ;
1458
1459 } /* switch */
1460 break ;
1461 } /* switch */
1462 return ;
1463 }
1464
1465 static struct net_device_stats * xl_get_stats(struct net_device *dev)
1466 {
1467 struct xl_private *xl_priv = netdev_priv(dev);
1468 return (struct net_device_stats *) &xl_priv->xl_stats;
1469 }
1470
1471 static int xl_set_mac_address (struct net_device *dev, void *addr)
1472 {
1473 struct sockaddr *saddr = addr ;
1474 struct xl_private *xl_priv = netdev_priv(dev);
1475
1476 if (netif_running(dev)) {
1477 printk(KERN_WARNING "%s: Cannot set mac/laa address while card is open\n", dev->name) ;
1478 return -EIO ;
1479 }
1480
1481 memcpy(xl_priv->xl_laa, saddr->sa_data,dev->addr_len) ;
1482
1483 if (xl_priv->xl_message_level) {
1484 printk(KERN_INFO "%s: MAC/LAA Set to = %x.%x.%x.%x.%x.%x\n",dev->name, xl_priv->xl_laa[0],
1485 xl_priv->xl_laa[1], xl_priv->xl_laa[2],
1486 xl_priv->xl_laa[3], xl_priv->xl_laa[4],
1487 xl_priv->xl_laa[5]);
1488 }
1489
1490 return 0 ;
1491 }
1492
1493 static void xl_arb_cmd(struct net_device *dev)
1494 {
1495 struct xl_private *xl_priv = netdev_priv(dev);
1496 u8 __iomem * xl_mmio = xl_priv->xl_mmio ;
1497 u8 arb_cmd ;
1498 u16 lan_status, lan_status_diff ;
1499
1500 writel( ( MEM_BYTE_READ | 0xD0000 | xl_priv->arb), xl_mmio + MMIO_MAC_ACCESS_CMD) ;
1501 arb_cmd = readb(xl_mmio + MMIO_MACDATA) ;
1502
1503 if (arb_cmd == RING_STATUS_CHANGE) { /* Ring.Status.Change */
1504 writel( ( (MEM_WORD_READ | 0xD0000 | xl_priv->arb) + 6), xl_mmio + MMIO_MAC_ACCESS_CMD) ;
1505
1506 printk(KERN_INFO "%s: Ring Status Change: New Status = %04x\n", dev->name, swab16(readw(xl_mmio + MMIO_MACDATA) )) ;
1507
1508 lan_status = swab16(readw(xl_mmio + MMIO_MACDATA));
1509
1510 /* Acknowledge interrupt, this tells nic we are done with the arb */
1511 writel(ACK_INTERRUPT | ARBCACK | LATCH_ACK, xl_mmio + MMIO_COMMAND) ;
1512
1513 lan_status_diff = xl_priv->xl_lan_status ^ lan_status ;
1514
1515 if (lan_status_diff & (LSC_LWF | LSC_ARW | LSC_FPE | LSC_RR) ) {
1516 if (lan_status_diff & LSC_LWF)
1517 printk(KERN_WARNING "%s: Short circuit detected on the lobe\n",dev->name);
1518 if (lan_status_diff & LSC_ARW)
1519 printk(KERN_WARNING "%s: Auto removal error\n",dev->name);
1520 if (lan_status_diff & LSC_FPE)
1521 printk(KERN_WARNING "%s: FDX Protocol Error\n",dev->name);
1522 if (lan_status_diff & LSC_RR)
1523 printk(KERN_WARNING "%s: Force remove MAC frame received\n",dev->name);
1524
1525 /* Adapter has been closed by the hardware */
1526
1527 netif_stop_queue(dev);
1528 xl_freemem(dev) ;
1529 free_irq(dev->irq,dev);
1530
1531 printk(KERN_WARNING "%s: Adapter has been closed \n", dev->name) ;
1532 } /* If serious error */
1533
1534 if (xl_priv->xl_message_level) {
1535 if (lan_status_diff & LSC_SIG_LOSS)
1536 printk(KERN_WARNING "%s: No receive signal detected \n", dev->name) ;
1537 if (lan_status_diff & LSC_HARD_ERR)
1538 printk(KERN_INFO "%s: Beaconing \n",dev->name);
1539 if (lan_status_diff & LSC_SOFT_ERR)
1540 printk(KERN_WARNING "%s: Adapter transmitted Soft Error Report Mac Frame \n",dev->name);
1541 if (lan_status_diff & LSC_TRAN_BCN)
1542 printk(KERN_INFO "%s: We are tranmitting the beacon, aaah\n",dev->name);
1543 if (lan_status_diff & LSC_SS)
1544 printk(KERN_INFO "%s: Single Station on the ring \n", dev->name);
1545 if (lan_status_diff & LSC_RING_REC)
1546 printk(KERN_INFO "%s: Ring recovery ongoing\n",dev->name);
1547 if (lan_status_diff & LSC_FDX_MODE)
1548 printk(KERN_INFO "%s: Operating in FDX mode\n",dev->name);
1549 }
1550
1551 if (lan_status_diff & LSC_CO) {
1552 if (xl_priv->xl_message_level)
1553 printk(KERN_INFO "%s: Counter Overflow \n", dev->name);
1554 /* Issue READ.LOG command */
1555 xl_srb_cmd(dev, READ_LOG) ;
1556 }
1557
1558 /* There is no command in the tech docs to issue the read_sr_counters */
1559 if (lan_status_diff & LSC_SR_CO) {
1560 if (xl_priv->xl_message_level)
1561 printk(KERN_INFO "%s: Source routing counters overflow\n", dev->name);
1562 }
1563
1564 xl_priv->xl_lan_status = lan_status ;
1565
1566 } /* Lan.change.status */
1567 else if ( arb_cmd == RECEIVE_DATA) { /* Received.Data */
1568 #if XL_DEBUG
1569 printk(KERN_INFO "Received.Data \n") ;
1570 #endif
1571 writel( ((MEM_WORD_READ | 0xD0000 | xl_priv->arb) + 6), xl_mmio + MMIO_MAC_ACCESS_CMD) ;
1572 xl_priv->mac_buffer = swab16(readw(xl_mmio + MMIO_MACDATA)) ;
1573
1574 /* Now we are going to be really basic here and not do anything
1575 * with the data at all. The tech docs do not give me enough
1576 * information to calculate the buffers properly so we're
1577 * just going to tell the nic that we've dealt with the frame
1578 * anyway.
1579 */
1580
1581 dev->last_rx = jiffies ;
1582 /* Acknowledge interrupt, this tells nic we are done with the arb */
1583 writel(ACK_INTERRUPT | ARBCACK | LATCH_ACK, xl_mmio + MMIO_COMMAND) ;
1584
1585 /* Is the ASB free ? */
1586
1587 xl_priv->asb_queued = 0 ;
1588 writel( ((MEM_BYTE_READ | 0xD0000 | xl_priv->asb) + 2), xl_mmio + MMIO_MAC_ACCESS_CMD) ;
1589 if (readb(xl_mmio + MMIO_MACDATA) != 0xff) {
1590 xl_priv->asb_queued = 1 ;
1591
1592 xl_wait_misr_flags(dev) ;
1593
1594 writel(MEM_BYTE_WRITE | MF_ASBFR, xl_mmio + MMIO_MAC_ACCESS_CMD);
1595 writeb(0xff, xl_mmio + MMIO_MACDATA) ;
1596 writel(MMIO_BYTE_WRITE | MISR_SET, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
1597 writeb(MISR_ASBFR, xl_mmio + MMIO_MACDATA) ;
1598 return ;
1599 /* Drop out and wait for the bottom half to be run */
1600 }
1601
1602 xl_asb_cmd(dev) ;
1603
1604 } else {
1605 printk(KERN_WARNING "%s: Received unknown arb (xl_priv) command: %02x \n",dev->name,arb_cmd) ;
1606 }
1607
1608 /* Acknowledge the arb interrupt */
1609
1610 writel(ACK_INTERRUPT | ARBCACK | LATCH_ACK , xl_mmio + MMIO_COMMAND) ;
1611
1612 return ;
1613 }
1614
1615
1616 /*
1617 * There is only one asb command, but we can get called from different
1618 * places.
1619 */
1620
1621 static void xl_asb_cmd(struct net_device *dev)
1622 {
1623 struct xl_private *xl_priv = netdev_priv(dev);
1624 u8 __iomem * xl_mmio = xl_priv->xl_mmio ;
1625
1626 if (xl_priv->asb_queued == 1)
1627 writel(ACK_INTERRUPT | LATCH_ACK | ASBFACK, xl_mmio + MMIO_COMMAND) ;
1628
1629 writel(MEM_BYTE_WRITE | 0xd0000 | xl_priv->asb, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
1630 writeb(0x81, xl_mmio + MMIO_MACDATA) ;
1631
1632 writel(MEM_WORD_WRITE | 0xd0000 | xl_priv->asb | 6, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
1633 writew(swab16(xl_priv->mac_buffer), xl_mmio + MMIO_MACDATA) ;
1634
1635 xl_wait_misr_flags(dev) ;
1636
1637 writel(MEM_BYTE_WRITE | MF_RASB, xl_mmio + MMIO_MAC_ACCESS_CMD);
1638 writeb(0xff, xl_mmio + MMIO_MACDATA) ;
1639
1640 writel(MMIO_BYTE_WRITE | MISR_SET, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
1641 writeb(MISR_RASB, xl_mmio + MMIO_MACDATA) ;
1642
1643 xl_priv->asb_queued = 2 ;
1644
1645 return ;
1646 }
1647
1648 /*
1649 * This will only get called if there was an error
1650 * from the asb cmd.
1651 */
1652 static void xl_asb_bh(struct net_device *dev)
1653 {
1654 struct xl_private *xl_priv = netdev_priv(dev);
1655 u8 __iomem * xl_mmio = xl_priv->xl_mmio ;
1656 u8 ret_code ;
1657
1658 writel(MMIO_BYTE_READ | 0xd0000 | xl_priv->asb | 2, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
1659 ret_code = readb(xl_mmio + MMIO_MACDATA) ;
1660 switch (ret_code) {
1661 case 0x01:
1662 printk(KERN_INFO "%s: ASB Command, unrecognized command code \n",dev->name) ;
1663 break ;
1664 case 0x26:
1665 printk(KERN_INFO "%s: ASB Command, unexpected receive buffer \n", dev->name) ;
1666 break ;
1667 case 0x40:
1668 printk(KERN_INFO "%s: ASB Command, Invalid Station ID \n", dev->name) ;
1669 break ;
1670 }
1671 xl_priv->asb_queued = 0 ;
1672 writel(ACK_INTERRUPT | LATCH_ACK | ASBFACK, xl_mmio + MMIO_COMMAND) ;
1673 return ;
1674 }
1675
1676 /*
1677 * Issue srb commands to the nic
1678 */
1679
1680 static void xl_srb_cmd(struct net_device *dev, int srb_cmd)
1681 {
1682 struct xl_private *xl_priv = netdev_priv(dev);
1683 u8 __iomem * xl_mmio = xl_priv->xl_mmio ;
1684
1685 switch (srb_cmd) {
1686 case READ_LOG:
1687 writel(MEM_BYTE_WRITE | 0xD0000 | xl_priv->srb, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
1688 writeb(READ_LOG, xl_mmio + MMIO_MACDATA) ;
1689 break;
1690
1691 case CLOSE_NIC:
1692 writel(MEM_BYTE_WRITE | 0xD0000 | xl_priv->srb, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
1693 writeb(CLOSE_NIC, xl_mmio + MMIO_MACDATA) ;
1694 break ;
1695
1696 case SET_RECEIVE_MODE:
1697 writel(MEM_BYTE_WRITE | 0xD0000 | xl_priv->srb, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
1698 writeb(SET_RECEIVE_MODE, xl_mmio + MMIO_MACDATA) ;
1699 writel(MEM_WORD_WRITE | 0xD0000 | xl_priv->srb | 4, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
1700 writew(xl_priv->xl_copy_all_options, xl_mmio + MMIO_MACDATA) ;
1701 break ;
1702
1703 case SET_FUNC_ADDRESS:
1704 writel(MEM_BYTE_WRITE | 0xD0000 | xl_priv->srb, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
1705 writeb(SET_FUNC_ADDRESS, xl_mmio + MMIO_MACDATA) ;
1706 writel(MEM_BYTE_WRITE | 0xD0000 | xl_priv->srb | 6 , xl_mmio + MMIO_MAC_ACCESS_CMD) ;
1707 writeb(xl_priv->xl_functional_addr[0], xl_mmio + MMIO_MACDATA) ;
1708 writel(MEM_BYTE_WRITE | 0xD0000 | xl_priv->srb | 7 , xl_mmio + MMIO_MAC_ACCESS_CMD) ;
1709 writeb(xl_priv->xl_functional_addr[1], xl_mmio + MMIO_MACDATA) ;
1710 writel(MEM_BYTE_WRITE | 0xD0000 | xl_priv->srb | 8 , xl_mmio + MMIO_MAC_ACCESS_CMD) ;
1711 writeb(xl_priv->xl_functional_addr[2], xl_mmio + MMIO_MACDATA) ;
1712 writel(MEM_BYTE_WRITE | 0xD0000 | xl_priv->srb | 9 , xl_mmio + MMIO_MAC_ACCESS_CMD) ;
1713 writeb(xl_priv->xl_functional_addr[3], xl_mmio + MMIO_MACDATA) ;
1714 break ;
1715 } /* switch */
1716
1717
1718 xl_wait_misr_flags(dev) ;
1719
1720 /* Write 0xff to the CSRB flag */
1721 writel(MEM_BYTE_WRITE | MF_CSRB , xl_mmio + MMIO_MAC_ACCESS_CMD) ;
1722 writeb(0xFF, xl_mmio + MMIO_MACDATA) ;
1723 /* Set csrb bit in MISR register to process command */
1724 writel(MMIO_BYTE_WRITE | MISR_SET, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
1725 writeb(MISR_CSRB, xl_mmio + MMIO_MACDATA) ;
1726 xl_priv->srb_queued = 1 ;
1727
1728 return ;
1729 }
1730
1731 /*
1732 * This is nasty, to use the MISR command you have to wait for 6 memory locations
1733 * to be zero. This is the way the driver does on other OS'es so we should be ok with
1734 * the empty loop.
1735 */
1736
1737 static void xl_wait_misr_flags(struct net_device *dev)
1738 {
1739 struct xl_private *xl_priv = netdev_priv(dev);
1740 u8 __iomem * xl_mmio = xl_priv->xl_mmio ;
1741
1742 int i ;
1743
1744 writel(MMIO_BYTE_READ | MISR_RW, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
1745 if (readb(xl_mmio + MMIO_MACDATA) != 0) { /* Misr not clear */
1746 for (i=0; i<6; i++) {
1747 writel(MEM_BYTE_READ | 0xDFFE0 | i, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
1748 while (readb(xl_mmio + MMIO_MACDATA) != 0 ) {} ; /* Empty Loop */
1749 }
1750 }
1751
1752 writel(MMIO_BYTE_WRITE | MISR_AND, xl_mmio + MMIO_MAC_ACCESS_CMD) ;
1753 writeb(0x80, xl_mmio + MMIO_MACDATA) ;
1754
1755 return ;
1756 }
1757
1758 /*
1759 * Change mtu size, this should work the same as olympic
1760 */
1761
1762 static int xl_change_mtu(struct net_device *dev, int mtu)
1763 {
1764 struct xl_private *xl_priv = netdev_priv(dev);
1765 u16 max_mtu ;
1766
1767 if (xl_priv->xl_ring_speed == 4)
1768 max_mtu = 4500 ;
1769 else
1770 max_mtu = 18000 ;
1771
1772 if (mtu > max_mtu)
1773 return -EINVAL ;
1774 if (mtu < 100)
1775 return -EINVAL ;
1776
1777 dev->mtu = mtu ;
1778 xl_priv->pkt_buf_sz = mtu + TR_HLEN ;
1779
1780 return 0 ;
1781 }
1782
1783 static void __devexit xl_remove_one (struct pci_dev *pdev)
1784 {
1785 struct net_device *dev = pci_get_drvdata(pdev);
1786 struct xl_private *xl_priv=netdev_priv(dev);
1787
1788 unregister_netdev(dev);
1789 iounmap(xl_priv->xl_mmio) ;
1790 pci_release_regions(pdev) ;
1791 pci_set_drvdata(pdev,NULL) ;
1792 free_netdev(dev);
1793 return ;
1794 }
1795
1796 static struct pci_driver xl_3c359_driver = {
1797 .name = "3c359",
1798 .id_table = xl_pci_tbl,
1799 .probe = xl_probe,
1800 .remove = __devexit_p(xl_remove_one),
1801 };
1802
1803 static int __init xl_pci_init (void)
1804 {
1805 return pci_register_driver(&xl_3c359_driver);
1806 }
1807
1808
1809 static void __exit xl_pci_cleanup (void)
1810 {
1811 pci_unregister_driver (&xl_3c359_driver);
1812 }
1813
1814 module_init(xl_pci_init);
1815 module_exit(xl_pci_cleanup);
1816
1817 MODULE_LICENSE("GPL") ;
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