1 /*
2 * lanstreamer.c -- driver for the IBM Auto LANStreamer PCI Adapter
3 *
4 * Written By: Mike Sullivan, IBM Corporation
5 *
6 * Copyright (C) 1999 IBM Corporation
7 *
8 * Linux driver for IBM PCI tokenring cards based on the LanStreamer MPC
9 * chipset.
10 *
11 * This driver is based on the olympic driver for IBM PCI TokenRing cards (Pit/Pit-Phy/Olympic
12 * chipsets) written by:
13 * 1999 Peter De Schrijver All Rights Reserved
14 * 1999 Mike Phillips (phillim@amtrak.com)
15 *
16 * Base Driver Skeleton:
17 * Written 1993-94 by Donald Becker.
18 *
19 * Copyright 1993 United States Government as represented by the
20 * Director, National Security Agency.
21 *
22 * This program is free software; you can redistribute it and/or modify
23 * it under the terms of the GNU General Public License as published by
24 * the Free Software Foundation; either version 2 of the License, or
25 * (at your option) any later version.
26 *
27 * This program is distributed in the hope that it will be useful,
28 * but WITHOUT ANY WARRANTY; without even the implied warranty of
29 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
30 * GNU General Public License for more details.
31 *
32 * NO WARRANTY
33 * THE PROGRAM IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR
34 * CONDITIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED INCLUDING, WITHOUT
35 * LIMITATION, ANY WARRANTIES OR CONDITIONS OF TITLE, NON-INFRINGEMENT,
36 * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Each Recipient is
37 * solely responsible for determining the appropriateness of using and
38 * distributing the Program and assumes all risks associated with its
39 * exercise of rights under this Agreement, including but not limited to
40 * the risks and costs of program errors, damage to or loss of data,
41 * programs or equipment, and unavailability or interruption of operations.
42 *
43 * DISCLAIMER OF LIABILITY
44 * NEITHER RECIPIENT NOR ANY CONTRIBUTORS SHALL HAVE ANY LIABILITY FOR ANY
45 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
46 * DAMAGES (INCLUDING WITHOUT LIMITATION LOST PROFITS), HOWEVER CAUSED AND
47 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
48 * TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
49 * USE OR DISTRIBUTION OF THE PROGRAM OR THE EXERCISE OF ANY RIGHTS GRANTED
50 * HEREUNDER, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES
51 *
52 * You should have received a copy of the GNU General Public License
53 * along with this program; if not, write to the Free Software
54 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
55 *
56 *
57 * 12/10/99 - Alpha Release 0.1.0
58 * First release to the public
59 * 03/03/00 - Merged to kernel, indented -kr -i8 -bri0, fixed some missing
60 * malloc free checks, reviewed code. <alan@redhat.com>
61 * 03/13/00 - Added spinlocks for smp
62 * 03/08/01 - Added support for module_init() and module_exit()
63 * 08/15/01 - Added ioctl() functionality for debugging, changed netif_*_queue
64 * calls and other incorrectness - Kent Yoder <yoder1@us.ibm.com>
65 * 11/05/01 - Restructured the interrupt function, added delays, reduced the
66 * the number of TX descriptors to 1, which together can prevent
67 * the card from locking up the box - <yoder1@us.ibm.com>
68 * 09/27/02 - New PCI interface + bug fix. - <yoder1@us.ibm.com>
69 * 11/13/02 - Removed free_irq calls which could cause a hang, added
70 * netif_carrier_{on|off} - <yoder1@us.ibm.com>
71 *
72 * To Do:
73 *
74 *
75 * If Problems do Occur
76 * Most problems can be rectified by either closing and opening the interface
77 * (ifconfig down and up) or rmmod and insmod'ing the driver (a bit difficult
78 * if compiled into the kernel).
79 */
80
81 /* Change STREAMER_DEBUG to 1 to get verbose, and I mean really verbose, messages */
82
83 #define STREAMER_DEBUG 0
84 #define STREAMER_DEBUG_PACKETS 0
85
86 /* Change STREAMER_NETWORK_MONITOR to receive mac frames through the arb channel.
87 * Will also create a /proc/net/streamer_tr entry if proc_fs is compiled into the
88 * kernel.
89 * Intended to be used to create a ring-error reporting network module
90 * i.e. it will give you the source address of beaconers on the ring
91 */
92
93 #define STREAMER_NETWORK_MONITOR 0
94
95 /* #define CONFIG_PROC_FS */
96
97 /*
98 * Allow or disallow ioctl's for debugging
99 */
100
101 #define STREAMER_IOCTL 0
102
103 #include <linux/module.h>
104 #include <linux/kernel.h>
105 #include <linux/errno.h>
106 #include <linux/timer.h>
107 #include <linux/in.h>
108 #include <linux/ioport.h>
109 #include <linux/string.h>
110 #include <linux/proc_fs.h>
111 #include <linux/ptrace.h>
112 #include <linux/skbuff.h>
113 #include <linux/interrupt.h>
114 #include <linux/delay.h>
115 #include <linux/netdevice.h>
116 #include <linux/trdevice.h>
117 #include <linux/stddef.h>
118 #include <linux/init.h>
119 #include <linux/pci.h>
120 #include <linux/dma-mapping.h>
121 #include <linux/spinlock.h>
122 #include <linux/bitops.h>
123 #include <linux/jiffies.h>
124
125 #include <net/net_namespace.h>
126 #include <net/checksum.h>
127
128 #include <asm/io.h>
129 #include <asm/system.h>
130
131 #include "lanstreamer.h"
132
133 #if (BITS_PER_LONG == 64)
134 #error broken on 64-bit: stores pointer to rx_ring->buffer in 32-bit int
135 #endif
136
137
138 /* I've got to put some intelligence into the version number so that Peter and I know
139 * which version of the code somebody has got.
140 * Version Number = a.b.c.d where a.b.c is the level of code and d is the latest author.
141 * So 0.0.1.pds = Peter, 0.0.1.mlp = Mike
142 *
143 * Official releases will only have an a.b.c version number format.
144 */
145
146 static char version[] = "LanStreamer.c v0.4.0 03/08/01 - Mike Sullivan\n"
147 " v0.5.3 11/13/02 - Kent Yoder";
148
149 static struct pci_device_id streamer_pci_tbl[] = {
150 { PCI_VENDOR_ID_IBM, PCI_DEVICE_ID_IBM_TR, PCI_ANY_ID, PCI_ANY_ID,},
151 {} /* terminating entry */
152 };
153 MODULE_DEVICE_TABLE(pci,streamer_pci_tbl);
154
155
156 static char *open_maj_error[] = {
157 "No error", "Lobe Media Test", "Physical Insertion",
158 "Address Verification", "Neighbor Notification (Ring Poll)",
159 "Request Parameters", "FDX Registration Request",
160 "FDX Lobe Media Test", "FDX Duplicate Address Check",
161 "Unknown stage"
162 };
163
164 static char *open_min_error[] = {
165 "No error", "Function Failure", "Signal Lost", "Wire Fault",
166 "Ring Speed Mismatch", "Timeout", "Ring Failure", "Ring Beaconing",
167 "Duplicate Node Address", "Request Parameters", "Remove Received",
168 "Reserved", "Reserved", "No Monitor Detected for RPL",
169 "Monitor Contention failer for RPL", "FDX Protocol Error"
170 };
171
172 /* Module paramters */
173
174 /* Ring Speed 0,4,16
175 * 0 = Autosense
176 * 4,16 = Selected speed only, no autosense
177 * This allows the card to be the first on the ring
178 * and become the active monitor.
179 *
180 * WARNING: Some hubs will allow you to insert
181 * at the wrong speed
182 */
183
184 static int ringspeed[STREAMER_MAX_ADAPTERS] = { 0, };
185
186 module_param_array(ringspeed, int, NULL, 0);
187
188 /* Packet buffer size */
189
190 static int pkt_buf_sz[STREAMER_MAX_ADAPTERS] = { 0, };
191
192 module_param_array(pkt_buf_sz, int, NULL, 0);
193
194 /* Message Level */
195
196 static int message_level[STREAMER_MAX_ADAPTERS] = { 1, };
197
198 module_param_array(message_level, int, NULL, 0);
199
200 #if STREAMER_IOCTL
201 static int streamer_ioctl(struct net_device *, struct ifreq *, int);
202 #endif
203
204 static int streamer_reset(struct net_device *dev);
205 static int streamer_open(struct net_device *dev);
206 static int streamer_xmit(struct sk_buff *skb, struct net_device *dev);
207 static int streamer_close(struct net_device *dev);
208 static void streamer_set_rx_mode(struct net_device *dev);
209 static irqreturn_t streamer_interrupt(int irq, void *dev_id);
210 static struct net_device_stats *streamer_get_stats(struct net_device *dev);
211 static int streamer_set_mac_address(struct net_device *dev, void *addr);
212 static void streamer_arb_cmd(struct net_device *dev);
213 static int streamer_change_mtu(struct net_device *dev, int mtu);
214 static void streamer_srb_bh(struct net_device *dev);
215 static void streamer_asb_bh(struct net_device *dev);
216 #if STREAMER_NETWORK_MONITOR
217 #ifdef CONFIG_PROC_FS
218 static int streamer_proc_info(char *buffer, char **start, off_t offset,
219 int length, int *eof, void *data);
220 static int sprintf_info(char *buffer, struct net_device *dev);
221 struct streamer_private *dev_streamer=NULL;
222 #endif
223 #endif
224
streamer_init_one(struct pci_dev * pdev,const struct pci_device_id * ent)225 static int __devinit streamer_init_one(struct pci_dev *pdev,
226 const struct pci_device_id *ent)
227 {
228 struct net_device *dev;
229 struct streamer_private *streamer_priv;
230 unsigned long pio_start, pio_end, pio_flags, pio_len;
231 unsigned long mmio_start, mmio_end, mmio_flags, mmio_len;
232 int rc = 0;
233 static int card_no=-1;
234 u16 pcr;
235
236 #if STREAMER_DEBUG
237 printk("lanstreamer::streamer_init_one, entry pdev %p\n",pdev);
238 #endif
239
240 card_no++;
241 dev = alloc_trdev(sizeof(*streamer_priv));
242 if (dev==NULL) {
243 printk(KERN_ERR "lanstreamer: out of memory.\n");
244 return -ENOMEM;
245 }
246
247 streamer_priv = netdev_priv(dev);
248
249 #if STREAMER_NETWORK_MONITOR
250 #ifdef CONFIG_PROC_FS
251 if (!dev_streamer)
252 create_proc_read_entry("streamer_tr", 0, init_net.proc_net,
253 streamer_proc_info, NULL);
254 streamer_priv->next = dev_streamer;
255 dev_streamer = streamer_priv;
256 #endif
257 #endif
258
259 rc = pci_set_dma_mask(pdev, DMA_32BIT_MASK);
260 if (rc) {
261 printk(KERN_ERR "%s: No suitable PCI mapping available.\n",
262 dev->name);
263 rc = -ENODEV;
264 goto err_out;
265 }
266
267 rc = pci_enable_device(pdev);
268 if (rc) {
269 printk(KERN_ERR "lanstreamer: unable to enable pci device\n");
270 rc=-EIO;
271 goto err_out;
272 }
273
274 pci_set_master(pdev);
275
276 rc = pci_set_mwi(pdev);
277 if (rc) {
278 printk(KERN_ERR "lanstreamer: unable to enable MWI on pci device\n");
279 goto err_out_disable;
280 }
281
282 pio_start = pci_resource_start(pdev, 0);
283 pio_end = pci_resource_end(pdev, 0);
284 pio_flags = pci_resource_flags(pdev, 0);
285 pio_len = pci_resource_len(pdev, 0);
286
287 mmio_start = pci_resource_start(pdev, 1);
288 mmio_end = pci_resource_end(pdev, 1);
289 mmio_flags = pci_resource_flags(pdev, 1);
290 mmio_len = pci_resource_len(pdev, 1);
291
292 #if STREAMER_DEBUG
293 printk("lanstreamer: pio_start %x pio_end %x pio_len %x pio_flags %x\n",
294 pio_start, pio_end, pio_len, pio_flags);
295 printk("lanstreamer: mmio_start %x mmio_end %x mmio_len %x mmio_flags %x\n",
296 mmio_start, mmio_end, mmio_flags, mmio_len);
297 #endif
298
299 if (!request_region(pio_start, pio_len, "lanstreamer")) {
300 printk(KERN_ERR "lanstreamer: unable to get pci io addr %lx\n",
301 pio_start);
302 rc= -EBUSY;
303 goto err_out_mwi;
304 }
305
306 if (!request_mem_region(mmio_start, mmio_len, "lanstreamer")) {
307 printk(KERN_ERR "lanstreamer: unable to get pci mmio addr %lx\n",
308 mmio_start);
309 rc= -EBUSY;
310 goto err_out_free_pio;
311 }
312
313 streamer_priv->streamer_mmio=ioremap(mmio_start, mmio_len);
314 if (streamer_priv->streamer_mmio == NULL) {
315 printk(KERN_ERR "lanstreamer: unable to remap MMIO %lx\n",
316 mmio_start);
317 rc= -EIO;
318 goto err_out_free_mmio;
319 }
320
321 init_waitqueue_head(&streamer_priv->srb_wait);
322 init_waitqueue_head(&streamer_priv->trb_wait);
323
324 dev->open = &streamer_open;
325 dev->hard_start_xmit = &streamer_xmit;
326 dev->change_mtu = &streamer_change_mtu;
327 dev->stop = &streamer_close;
328 #if STREAMER_IOCTL
329 dev->do_ioctl = &streamer_ioctl;
330 #else
331 dev->do_ioctl = NULL;
332 #endif
333 dev->set_multicast_list = &streamer_set_rx_mode;
334 dev->get_stats = &streamer_get_stats;
335 dev->set_mac_address = &streamer_set_mac_address;
336 dev->irq = pdev->irq;
337 dev->base_addr=pio_start;
338 SET_NETDEV_DEV(dev, &pdev->dev);
339
340 streamer_priv->streamer_card_name = (char *)pdev->resource[0].name;
341 streamer_priv->pci_dev = pdev;
342
343 if ((pkt_buf_sz[card_no] < 100) || (pkt_buf_sz[card_no] > 18000))
344 streamer_priv->pkt_buf_sz = PKT_BUF_SZ;
345 else
346 streamer_priv->pkt_buf_sz = pkt_buf_sz[card_no];
347
348 streamer_priv->streamer_ring_speed = ringspeed[card_no];
349 streamer_priv->streamer_message_level = message_level[card_no];
350
351 pci_set_drvdata(pdev, dev);
352
353 spin_lock_init(&streamer_priv->streamer_lock);
354
355 pci_read_config_word (pdev, PCI_COMMAND, &pcr);
356 pcr |= PCI_COMMAND_SERR;
357 pci_write_config_word (pdev, PCI_COMMAND, pcr);
358
359 printk("%s \n", version);
360 printk("%s: %s. I/O at %hx, MMIO at %p, using irq %d\n",dev->name,
361 streamer_priv->streamer_card_name,
362 (unsigned int) dev->base_addr,
363 streamer_priv->streamer_mmio,
364 dev->irq);
365
366 if (streamer_reset(dev))
367 goto err_out_unmap;
368
369 rc = register_netdev(dev);
370 if (rc)
371 goto err_out_unmap;
372 return 0;
373
374 err_out_unmap:
375 iounmap(streamer_priv->streamer_mmio);
376 err_out_free_mmio:
377 release_mem_region(mmio_start, mmio_len);
378 err_out_free_pio:
379 release_region(pio_start, pio_len);
380 err_out_mwi:
381 pci_clear_mwi(pdev);
382 err_out_disable:
383 pci_disable_device(pdev);
384 err_out:
385 free_netdev(dev);
386 #if STREAMER_DEBUG
387 printk("lanstreamer: Exit error %x\n",rc);
388 #endif
389 return rc;
390 }
391
streamer_remove_one(struct pci_dev * pdev)392 static void __devexit streamer_remove_one(struct pci_dev *pdev)
393 {
394 struct net_device *dev=pci_get_drvdata(pdev);
395 struct streamer_private *streamer_priv;
396
397 #if STREAMER_DEBUG
398 printk("lanstreamer::streamer_remove_one entry pdev %p\n",pdev);
399 #endif
400
401 if (dev == NULL) {
402 printk(KERN_ERR "lanstreamer::streamer_remove_one, ERROR dev is NULL\n");
403 return;
404 }
405
406 streamer_priv=netdev_priv(dev);
407 if (streamer_priv == NULL) {
408 printk(KERN_ERR "lanstreamer::streamer_remove_one, ERROR dev->priv is NULL\n");
409 return;
410 }
411
412 #if STREAMER_NETWORK_MONITOR
413 #ifdef CONFIG_PROC_FS
414 {
415 struct streamer_private **p, **next;
416
417 for (p = &dev_streamer; *p; p = next) {
418 next = &(*p)->next;
419 if (*p == streamer_priv) {
420 *p = *next;
421 break;
422 }
423 }
424 if (!dev_streamer)
425 remove_proc_entry("streamer_tr", init_net.proc_net);
426 }
427 #endif
428 #endif
429
430 unregister_netdev(dev);
431 iounmap(streamer_priv->streamer_mmio);
432 release_mem_region(pci_resource_start(pdev, 1), pci_resource_len(pdev,1));
433 release_region(pci_resource_start(pdev, 0), pci_resource_len(pdev,0));
434 pci_clear_mwi(pdev);
435 pci_disable_device(pdev);
436 free_netdev(dev);
437 pci_set_drvdata(pdev, NULL);
438 }
439
440
streamer_reset(struct net_device * dev)441 static int streamer_reset(struct net_device *dev)
442 {
443 struct streamer_private *streamer_priv;
444 __u8 __iomem *streamer_mmio;
445 unsigned long t;
446 unsigned int uaa_addr;
447 struct sk_buff *skb = NULL;
448 __u16 misr;
449
450 streamer_priv = netdev_priv(dev);
451 streamer_mmio = streamer_priv->streamer_mmio;
452
453 writew(readw(streamer_mmio + BCTL) | BCTL_SOFTRESET, streamer_mmio + BCTL);
454 t = jiffies;
455 /* Hold soft reset bit for a while */
456 ssleep(1);
457
458 writew(readw(streamer_mmio + BCTL) & ~BCTL_SOFTRESET,
459 streamer_mmio + BCTL);
460
461 #if STREAMER_DEBUG
462 printk("BCTL: %x\n", readw(streamer_mmio + BCTL));
463 printk("GPR: %x\n", readw(streamer_mmio + GPR));
464 printk("SISRMASK: %x\n", readw(streamer_mmio + SISR_MASK));
465 #endif
466 writew(readw(streamer_mmio + BCTL) | (BCTL_RX_FIFO_8 | BCTL_TX_FIFO_8), streamer_mmio + BCTL );
467
468 if (streamer_priv->streamer_ring_speed == 0) { /* Autosense */
469 writew(readw(streamer_mmio + GPR) | GPR_AUTOSENSE,
470 streamer_mmio + GPR);
471 if (streamer_priv->streamer_message_level)
472 printk(KERN_INFO "%s: Ringspeed autosense mode on\n",
473 dev->name);
474 } else if (streamer_priv->streamer_ring_speed == 16) {
475 if (streamer_priv->streamer_message_level)
476 printk(KERN_INFO "%s: Trying to open at 16 Mbps as requested\n",
477 dev->name);
478 writew(GPR_16MBPS, streamer_mmio + GPR);
479 } else if (streamer_priv->streamer_ring_speed == 4) {
480 if (streamer_priv->streamer_message_level)
481 printk(KERN_INFO "%s: Trying to open at 4 Mbps as requested\n",
482 dev->name);
483 writew(0, streamer_mmio + GPR);
484 }
485
486 skb = dev_alloc_skb(streamer_priv->pkt_buf_sz);
487 if (!skb) {
488 printk(KERN_INFO "%s: skb allocation for diagnostics failed...proceeding\n",
489 dev->name);
490 } else {
491 struct streamer_rx_desc *rx_ring;
492 u8 *data;
493
494 rx_ring=(struct streamer_rx_desc *)skb->data;
495 data=((u8 *)skb->data)+sizeof(struct streamer_rx_desc);
496 rx_ring->forward=0;
497 rx_ring->status=0;
498 rx_ring->buffer=cpu_to_le32(pci_map_single(streamer_priv->pci_dev, data,
499 512, PCI_DMA_FROMDEVICE));
500 rx_ring->framelen_buflen=512;
501 writel(cpu_to_le32(pci_map_single(streamer_priv->pci_dev, rx_ring, 512, PCI_DMA_FROMDEVICE)),
502 streamer_mmio+RXBDA);
503 }
504
505 #if STREAMER_DEBUG
506 printk("GPR = %x\n", readw(streamer_mmio + GPR));
507 #endif
508 /* start solo init */
509 writew(SISR_MI, streamer_mmio + SISR_MASK_SUM);
510
511 while (!((readw(streamer_mmio + SISR)) & SISR_SRB_REPLY)) {
512 msleep_interruptible(100);
513 if (time_after(jiffies, t + 40 * HZ)) {
514 printk(KERN_ERR
515 "IBM PCI tokenring card not responding\n");
516 release_region(dev->base_addr, STREAMER_IO_SPACE);
517 if (skb)
518 dev_kfree_skb(skb);
519 return -1;
520 }
521 }
522 writew(~SISR_SRB_REPLY, streamer_mmio + SISR_RUM);
523 misr = readw(streamer_mmio + MISR_RUM);
524 writew(~misr, streamer_mmio + MISR_RUM);
525
526 if (skb)
527 dev_kfree_skb(skb); /* release skb used for diagnostics */
528
529 #if STREAMER_DEBUG
530 printk("LAPWWO: %x, LAPA: %x LAPE: %x\n",
531 readw(streamer_mmio + LAPWWO), readw(streamer_mmio + LAPA),
532 readw(streamer_mmio + LAPE));
533 #endif
534
535 #if STREAMER_DEBUG
536 {
537 int i;
538 writew(readw(streamer_mmio + LAPWWO),
539 streamer_mmio + LAPA);
540 printk("initialization response srb dump: ");
541 for (i = 0; i < 10; i++)
542 printk("%x:",
543 ntohs(readw(streamer_mmio + LAPDINC)));
544 printk("\n");
545 }
546 #endif
547
548 writew(readw(streamer_mmio + LAPWWO) + 6, streamer_mmio + LAPA);
549 if (readw(streamer_mmio + LAPD)) {
550 printk(KERN_INFO "tokenring card initialization failed. errorcode : %x\n",
551 ntohs(readw(streamer_mmio + LAPD)));
552 release_region(dev->base_addr, STREAMER_IO_SPACE);
553 return -1;
554 }
555
556 writew(readw(streamer_mmio + LAPWWO) + 8, streamer_mmio + LAPA);
557 uaa_addr = ntohs(readw(streamer_mmio + LAPDINC));
558 readw(streamer_mmio + LAPDINC); /* skip over Level.Addr field */
559 streamer_priv->streamer_addr_table_addr = ntohs(readw(streamer_mmio + LAPDINC));
560 streamer_priv->streamer_parms_addr = ntohs(readw(streamer_mmio + LAPDINC));
561
562 #if STREAMER_DEBUG
563 printk("UAA resides at %x\n", uaa_addr);
564 #endif
565
566 /* setup uaa area for access with LAPD */
567 {
568 int i;
569 __u16 addr;
570 writew(uaa_addr, streamer_mmio + LAPA);
571 for (i = 0; i < 6; i += 2) {
572 addr=ntohs(readw(streamer_mmio+LAPDINC));
573 dev->dev_addr[i]= (addr >> 8) & 0xff;
574 dev->dev_addr[i+1]= addr & 0xff;
575 }
576 #if STREAMER_DEBUG
577 printk("Adapter address: %pM\n", dev->dev_addr);
578 #endif
579 }
580 return 0;
581 }
582
streamer_open(struct net_device * dev)583 static int streamer_open(struct net_device *dev)
584 {
585 struct streamer_private *streamer_priv = netdev_priv(dev);
586 __u8 __iomem *streamer_mmio = streamer_priv->streamer_mmio;
587 unsigned long flags;
588 char open_error[255];
589 int i, open_finished = 1;
590 __u16 srb_word;
591 __u16 srb_open;
592 int rc;
593
594 if (readw(streamer_mmio+BMCTL_SUM) & BMCTL_RX_ENABLED) {
595 rc=streamer_reset(dev);
596 }
597
598 if (request_irq(dev->irq, &streamer_interrupt, IRQF_SHARED, "lanstreamer", dev)) {
599 return -EAGAIN;
600 }
601 #if STREAMER_DEBUG
602 printk("BMCTL: %x\n", readw(streamer_mmio + BMCTL_SUM));
603 printk("pending ints: %x\n", readw(streamer_mmio + SISR));
604 #endif
605
606 writew(SISR_MI | SISR_SRB_REPLY, streamer_mmio + SISR_MASK); /* more ints later, doesn't stop arb cmd interrupt */
607 writew(LISR_LIE, streamer_mmio + LISR); /* more ints later */
608
609 /* adapter is closed, so SRB is pointed to by LAPWWO */
610 writew(readw(streamer_mmio + LAPWWO), streamer_mmio + LAPA);
611
612 #if STREAMER_DEBUG
613 printk("LAPWWO: %x, LAPA: %x\n", readw(streamer_mmio + LAPWWO),
614 readw(streamer_mmio + LAPA));
615 printk("LAPE: %x\n", readw(streamer_mmio + LAPE));
616 printk("SISR Mask = %04x\n", readw(streamer_mmio + SISR_MASK));
617 #endif
618 do {
619 int i;
620
621 for (i = 0; i < SRB_COMMAND_SIZE; i += 2) {
622 writew(0, streamer_mmio + LAPDINC);
623 }
624
625 writew(readw(streamer_mmio+LAPWWO),streamer_mmio+LAPA);
626 writew(htons(SRB_OPEN_ADAPTER<<8),streamer_mmio+LAPDINC) ; /* open */
627 writew(htons(STREAMER_CLEAR_RET_CODE<<8),streamer_mmio+LAPDINC);
628 writew(STREAMER_CLEAR_RET_CODE, streamer_mmio + LAPDINC);
629
630 writew(readw(streamer_mmio + LAPWWO) + 8, streamer_mmio + LAPA);
631 #if STREAMER_NETWORK_MONITOR
632 /* If Network Monitor, instruct card to copy MAC frames through the ARB */
633 writew(htons(OPEN_ADAPTER_ENABLE_FDX | OPEN_ADAPTER_PASS_ADC_MAC | OPEN_ADAPTER_PASS_ATT_MAC | OPEN_ADAPTER_PASS_BEACON), streamer_mmio + LAPDINC); /* offset 8 word contains open options */
634 #else
635 writew(htons(OPEN_ADAPTER_ENABLE_FDX), streamer_mmio + LAPDINC); /* Offset 8 word contains Open.Options */
636 #endif
637
638 if (streamer_priv->streamer_laa[0]) {
639 writew(readw(streamer_mmio + LAPWWO) + 12, streamer_mmio + LAPA);
640 writew(htons((streamer_priv->streamer_laa[0] << 8) |
641 streamer_priv->streamer_laa[1]),streamer_mmio+LAPDINC);
642 writew(htons((streamer_priv->streamer_laa[2] << 8) |
643 streamer_priv->streamer_laa[3]),streamer_mmio+LAPDINC);
644 writew(htons((streamer_priv->streamer_laa[4] << 8) |
645 streamer_priv->streamer_laa[5]),streamer_mmio+LAPDINC);
646 memcpy(dev->dev_addr, streamer_priv->streamer_laa, dev->addr_len);
647 }
648
649 /* save off srb open offset */
650 srb_open = readw(streamer_mmio + LAPWWO);
651 #if STREAMER_DEBUG
652 writew(readw(streamer_mmio + LAPWWO),
653 streamer_mmio + LAPA);
654 printk("srb open request: \n");
655 for (i = 0; i < 16; i++) {
656 printk("%x:", ntohs(readw(streamer_mmio + LAPDINC)));
657 }
658 printk("\n");
659 #endif
660 spin_lock_irqsave(&streamer_priv->streamer_lock, flags);
661 streamer_priv->srb_queued = 1;
662
663 /* signal solo that SRB command has been issued */
664 writew(LISR_SRB_CMD, streamer_mmio + LISR_SUM);
665 spin_unlock_irqrestore(&streamer_priv->streamer_lock, flags);
666
667 while (streamer_priv->srb_queued) {
668 interruptible_sleep_on_timeout(&streamer_priv->srb_wait, 5 * HZ);
669 if (signal_pending(current)) {
670 printk(KERN_WARNING "%s: SRB timed out.\n", dev->name);
671 printk(KERN_WARNING "SISR=%x MISR=%x, LISR=%x\n",
672 readw(streamer_mmio + SISR),
673 readw(streamer_mmio + MISR_RUM),
674 readw(streamer_mmio + LISR));
675 streamer_priv->srb_queued = 0;
676 break;
677 }
678 }
679
680 #if STREAMER_DEBUG
681 printk("SISR_MASK: %x\n", readw(streamer_mmio + SISR_MASK));
682 printk("srb open response:\n");
683 writew(srb_open, streamer_mmio + LAPA);
684 for (i = 0; i < 10; i++) {
685 printk("%x:",
686 ntohs(readw(streamer_mmio + LAPDINC)));
687 }
688 #endif
689
690 /* If we get the same return response as we set, the interrupt wasn't raised and the open
691 * timed out.
692 */
693 writew(srb_open + 2, streamer_mmio + LAPA);
694 srb_word = ntohs(readw(streamer_mmio + LAPD)) >> 8;
695 if (srb_word == STREAMER_CLEAR_RET_CODE) {
696 printk(KERN_WARNING "%s: Adapter Open time out or error.\n",
697 dev->name);
698 return -EIO;
699 }
700
701 if (srb_word != 0) {
702 if (srb_word == 0x07) {
703 if (!streamer_priv->streamer_ring_speed && open_finished) { /* Autosense , first time around */
704 printk(KERN_WARNING "%s: Retrying at different ring speed \n",
705 dev->name);
706 open_finished = 0;
707 } else {
708 __u16 error_code;
709
710 writew(srb_open + 6, streamer_mmio + LAPA);
711 error_code = ntohs(readw(streamer_mmio + LAPD));
712 strcpy(open_error, open_maj_error[(error_code & 0xf0) >> 4]);
713 strcat(open_error, " - ");
714 strcat(open_error, open_min_error[(error_code & 0x0f)]);
715
716 if (!streamer_priv->streamer_ring_speed
717 && ((error_code & 0x0f) == 0x0d))
718 {
719 printk(KERN_WARNING "%s: Tried to autosense ring speed with no monitors present\n", dev->name);
720 printk(KERN_WARNING "%s: Please try again with a specified ring speed \n", dev->name);
721 free_irq(dev->irq, dev);
722 return -EIO;
723 }
724
725 printk(KERN_WARNING "%s: %s\n",
726 dev->name, open_error);
727 free_irq(dev->irq, dev);
728 return -EIO;
729
730 } /* if autosense && open_finished */
731 } else {
732 printk(KERN_WARNING "%s: Bad OPEN response: %x\n",
733 dev->name, srb_word);
734 free_irq(dev->irq, dev);
735 return -EIO;
736 }
737 } else
738 open_finished = 1;
739 } while (!(open_finished)); /* Will only loop if ring speed mismatch re-open attempted && autosense is on */
740
741 writew(srb_open + 18, streamer_mmio + LAPA);
742 srb_word=ntohs(readw(streamer_mmio+LAPD)) >> 8;
743 if (srb_word & (1 << 3))
744 if (streamer_priv->streamer_message_level)
745 printk(KERN_INFO "%s: Opened in FDX Mode\n", dev->name);
746
747 if (srb_word & 1)
748 streamer_priv->streamer_ring_speed = 16;
749 else
750 streamer_priv->streamer_ring_speed = 4;
751
752 if (streamer_priv->streamer_message_level)
753 printk(KERN_INFO "%s: Opened in %d Mbps mode\n",
754 dev->name,
755 streamer_priv->streamer_ring_speed);
756
757 writew(srb_open + 8, streamer_mmio + LAPA);
758 streamer_priv->asb = ntohs(readw(streamer_mmio + LAPDINC));
759 streamer_priv->srb = ntohs(readw(streamer_mmio + LAPDINC));
760 streamer_priv->arb = ntohs(readw(streamer_mmio + LAPDINC));
761 readw(streamer_mmio + LAPDINC); /* offset 14 word is rsvd */
762 streamer_priv->trb = ntohs(readw(streamer_mmio + LAPDINC));
763
764 streamer_priv->streamer_receive_options = 0x00;
765 streamer_priv->streamer_copy_all_options = 0;
766
767 /* setup rx ring */
768 /* enable rx channel */
769 writew(~BMCTL_RX_DIS, streamer_mmio + BMCTL_RUM);
770
771 /* setup rx descriptors */
772 streamer_priv->streamer_rx_ring=
773 kmalloc( sizeof(struct streamer_rx_desc)*
774 STREAMER_RX_RING_SIZE,GFP_KERNEL);
775 if (!streamer_priv->streamer_rx_ring) {
776 printk(KERN_WARNING "%s ALLOC of streamer rx ring FAILED!!\n",dev->name);
777 return -EIO;
778 }
779
780 for (i = 0; i < STREAMER_RX_RING_SIZE; i++) {
781 struct sk_buff *skb;
782
783 skb = dev_alloc_skb(streamer_priv->pkt_buf_sz);
784 if (skb == NULL)
785 break;
786
787 skb->dev = dev;
788
789 streamer_priv->streamer_rx_ring[i].forward =
790 cpu_to_le32(pci_map_single(streamer_priv->pci_dev, &streamer_priv->streamer_rx_ring[i + 1],
791 sizeof(struct streamer_rx_desc), PCI_DMA_FROMDEVICE));
792 streamer_priv->streamer_rx_ring[i].status = 0;
793 streamer_priv->streamer_rx_ring[i].buffer =
794 cpu_to_le32(pci_map_single(streamer_priv->pci_dev, skb->data,
795 streamer_priv->pkt_buf_sz, PCI_DMA_FROMDEVICE));
796 streamer_priv->streamer_rx_ring[i].framelen_buflen = streamer_priv->pkt_buf_sz;
797 streamer_priv->rx_ring_skb[i] = skb;
798 }
799 streamer_priv->streamer_rx_ring[STREAMER_RX_RING_SIZE - 1].forward =
800 cpu_to_le32(pci_map_single(streamer_priv->pci_dev, &streamer_priv->streamer_rx_ring[0],
801 sizeof(struct streamer_rx_desc), PCI_DMA_FROMDEVICE));
802
803 if (i == 0) {
804 printk(KERN_WARNING "%s: Not enough memory to allocate rx buffers. Adapter disabled\n", dev->name);
805 free_irq(dev->irq, dev);
806 return -EIO;
807 }
808
809 streamer_priv->rx_ring_last_received = STREAMER_RX_RING_SIZE - 1; /* last processed rx status */
810
811 writel(cpu_to_le32(pci_map_single(streamer_priv->pci_dev, &streamer_priv->streamer_rx_ring[0],
812 sizeof(struct streamer_rx_desc), PCI_DMA_TODEVICE)),
813 streamer_mmio + RXBDA);
814 writel(cpu_to_le32(pci_map_single(streamer_priv->pci_dev, &streamer_priv->streamer_rx_ring[STREAMER_RX_RING_SIZE - 1],
815 sizeof(struct streamer_rx_desc), PCI_DMA_TODEVICE)),
816 streamer_mmio + RXLBDA);
817
818 /* set bus master interrupt event mask */
819 writew(MISR_RX_NOBUF | MISR_RX_EOF, streamer_mmio + MISR_MASK);
820
821
822 /* setup tx ring */
823 streamer_priv->streamer_tx_ring=kmalloc(sizeof(struct streamer_tx_desc)*
824 STREAMER_TX_RING_SIZE,GFP_KERNEL);
825 if (!streamer_priv->streamer_tx_ring) {
826 printk(KERN_WARNING "%s ALLOC of streamer_tx_ring FAILED\n",dev->name);
827 return -EIO;
828 }
829
830 writew(~BMCTL_TX2_DIS, streamer_mmio + BMCTL_RUM); /* Enables TX channel 2 */
831 for (i = 0; i < STREAMER_TX_RING_SIZE; i++) {
832 streamer_priv->streamer_tx_ring[i].forward = cpu_to_le32(pci_map_single(streamer_priv->pci_dev,
833 &streamer_priv->streamer_tx_ring[i + 1],
834 sizeof(struct streamer_tx_desc),
835 PCI_DMA_TODEVICE));
836 streamer_priv->streamer_tx_ring[i].status = 0;
837 streamer_priv->streamer_tx_ring[i].bufcnt_framelen = 0;
838 streamer_priv->streamer_tx_ring[i].buffer = 0;
839 streamer_priv->streamer_tx_ring[i].buflen = 0;
840 streamer_priv->streamer_tx_ring[i].rsvd1 = 0;
841 streamer_priv->streamer_tx_ring[i].rsvd2 = 0;
842 streamer_priv->streamer_tx_ring[i].rsvd3 = 0;
843 }
844 streamer_priv->streamer_tx_ring[STREAMER_TX_RING_SIZE - 1].forward =
845 cpu_to_le32(pci_map_single(streamer_priv->pci_dev, &streamer_priv->streamer_tx_ring[0],
846 sizeof(struct streamer_tx_desc), PCI_DMA_TODEVICE));
847
848 streamer_priv->free_tx_ring_entries = STREAMER_TX_RING_SIZE;
849 streamer_priv->tx_ring_free = 0; /* next entry in tx ring to use */
850 streamer_priv->tx_ring_last_status = STREAMER_TX_RING_SIZE - 1;
851
852 /* set Busmaster interrupt event mask (handle receives on interrupt only */
853 writew(MISR_TX2_EOF | MISR_RX_NOBUF | MISR_RX_EOF, streamer_mmio + MISR_MASK);
854 /* set system event interrupt mask */
855 writew(SISR_ADAPTER_CHECK | SISR_ARB_CMD | SISR_TRB_REPLY | SISR_ASB_FREE, streamer_mmio + SISR_MASK_SUM);
856
857 #if STREAMER_DEBUG
858 printk("BMCTL: %x\n", readw(streamer_mmio + BMCTL_SUM));
859 printk("SISR MASK: %x\n", readw(streamer_mmio + SISR_MASK));
860 #endif
861
862 #if STREAMER_NETWORK_MONITOR
863
864 writew(streamer_priv->streamer_addr_table_addr, streamer_mmio + LAPA);
865 printk("%s: Node Address: %04x:%04x:%04x\n", dev->name,
866 ntohs(readw(streamer_mmio + LAPDINC)),
867 ntohs(readw(streamer_mmio + LAPDINC)),
868 ntohs(readw(streamer_mmio + LAPDINC)));
869 readw(streamer_mmio + LAPDINC);
870 readw(streamer_mmio + LAPDINC);
871 printk("%s: Functional Address: %04x:%04x\n", dev->name,
872 ntohs(readw(streamer_mmio + LAPDINC)),
873 ntohs(readw(streamer_mmio + LAPDINC)));
874
875 writew(streamer_priv->streamer_parms_addr + 4,
876 streamer_mmio + LAPA);
877 printk("%s: NAUN Address: %04x:%04x:%04x\n", dev->name,
878 ntohs(readw(streamer_mmio + LAPDINC)),
879 ntohs(readw(streamer_mmio + LAPDINC)),
880 ntohs(readw(streamer_mmio + LAPDINC)));
881 #endif
882
883 netif_start_queue(dev);
884 netif_carrier_on(dev);
885 return 0;
886 }
887
888 /*
889 * When we enter the rx routine we do not know how many frames have been
890 * queued on the rx channel. Therefore we start at the next rx status
891 * position and travel around the receive ring until we have completed
892 * all the frames.
893 *
894 * This means that we may process the frame before we receive the end
895 * of frame interrupt. This is why we always test the status instead
896 * of blindly processing the next frame.
897 *
898 */
streamer_rx(struct net_device * dev)899 static void streamer_rx(struct net_device *dev)
900 {
901 struct streamer_private *streamer_priv =
902 netdev_priv(dev);
903 __u8 __iomem *streamer_mmio = streamer_priv->streamer_mmio;
904 struct streamer_rx_desc *rx_desc;
905 int rx_ring_last_received, length, frame_length, buffer_cnt = 0;
906 struct sk_buff *skb, *skb2;
907
908 /* setup the next rx descriptor to be received */
909 rx_desc = &streamer_priv->streamer_rx_ring[(streamer_priv->rx_ring_last_received + 1) & (STREAMER_RX_RING_SIZE - 1)];
910 rx_ring_last_received = streamer_priv->rx_ring_last_received;
911
912 while (rx_desc->status & 0x01000000) { /* While processed descriptors are available */
913 if (rx_ring_last_received != streamer_priv->rx_ring_last_received)
914 {
915 printk(KERN_WARNING "RX Error 1 rx_ring_last_received not the same %x %x\n",
916 rx_ring_last_received, streamer_priv->rx_ring_last_received);
917 }
918 streamer_priv->rx_ring_last_received = (streamer_priv->rx_ring_last_received + 1) & (STREAMER_RX_RING_SIZE - 1);
919 rx_ring_last_received = streamer_priv->rx_ring_last_received;
920
921 length = rx_desc->framelen_buflen & 0xffff; /* buffer length */
922 frame_length = (rx_desc->framelen_buflen >> 16) & 0xffff;
923
924 if (rx_desc->status & 0x7E830000) { /* errors */
925 if (streamer_priv->streamer_message_level) {
926 printk(KERN_WARNING "%s: Rx Error %x \n",
927 dev->name, rx_desc->status);
928 }
929 } else { /* received without errors */
930 if (rx_desc->status & 0x80000000) { /* frame complete */
931 buffer_cnt = 1;
932 skb = dev_alloc_skb(streamer_priv->pkt_buf_sz);
933 } else {
934 skb = dev_alloc_skb(frame_length);
935 }
936
937 if (skb == NULL)
938 {
939 printk(KERN_WARNING "%s: Not enough memory to copy packet to upper layers. \n", dev->name);
940 streamer_priv->streamer_stats.rx_dropped++;
941 } else { /* we allocated an skb OK */
942 if (buffer_cnt == 1) {
943 /* release the DMA mapping */
944 pci_unmap_single(streamer_priv->pci_dev,
945 le32_to_cpu(streamer_priv->streamer_rx_ring[rx_ring_last_received].buffer),
946 streamer_priv->pkt_buf_sz,
947 PCI_DMA_FROMDEVICE);
948 skb2 = streamer_priv->rx_ring_skb[rx_ring_last_received];
949 #if STREAMER_DEBUG_PACKETS
950 {
951 int i;
952 printk("streamer_rx packet print: skb->data2 %p skb->head %p\n", skb2->data, skb2->head);
953 for (i = 0; i < frame_length; i++)
954 {
955 printk("%x:", skb2->data[i]);
956 if (((i + 1) % 16) == 0)
957 printk("\n");
958 }
959 printk("\n");
960 }
961 #endif
962 skb_put(skb2, length);
963 skb2->protocol = tr_type_trans(skb2, dev);
964 /* recycle this descriptor */
965 streamer_priv->streamer_rx_ring[rx_ring_last_received].status = 0;
966 streamer_priv->streamer_rx_ring[rx_ring_last_received].framelen_buflen = streamer_priv->pkt_buf_sz;
967 streamer_priv->streamer_rx_ring[rx_ring_last_received].buffer =
968 cpu_to_le32(pci_map_single(streamer_priv->pci_dev, skb->data, streamer_priv->pkt_buf_sz,
969 PCI_DMA_FROMDEVICE));
970 streamer_priv->rx_ring_skb[rx_ring_last_received] = skb;
971 /* place recycled descriptor back on the adapter */
972 writel(cpu_to_le32(pci_map_single(streamer_priv->pci_dev,
973 &streamer_priv->streamer_rx_ring[rx_ring_last_received],
974 sizeof(struct streamer_rx_desc), PCI_DMA_FROMDEVICE)),
975 streamer_mmio + RXLBDA);
976 /* pass the received skb up to the protocol */
977 netif_rx(skb2);
978 } else {
979 do { /* Walk the buffers */
980 pci_unmap_single(streamer_priv->pci_dev, le32_to_cpu(rx_desc->buffer), length, PCI_DMA_FROMDEVICE),
981 memcpy(skb_put(skb, length), (void *)rx_desc->buffer, length); /* copy this fragment */
982 streamer_priv->streamer_rx_ring[rx_ring_last_received].status = 0;
983 streamer_priv->streamer_rx_ring[rx_ring_last_received].framelen_buflen = streamer_priv->pkt_buf_sz;
984
985 /* give descriptor back to the adapter */
986 writel(cpu_to_le32(pci_map_single(streamer_priv->pci_dev,
987 &streamer_priv->streamer_rx_ring[rx_ring_last_received],
988 length, PCI_DMA_FROMDEVICE)),
989 streamer_mmio + RXLBDA);
990
991 if (rx_desc->status & 0x80000000)
992 break; /* this descriptor completes the frame */
993
994 /* else get the next pending descriptor */
995 if (rx_ring_last_received!= streamer_priv->rx_ring_last_received)
996 {
997 printk("RX Error rx_ring_last_received not the same %x %x\n",
998 rx_ring_last_received,
999 streamer_priv->rx_ring_last_received);
1000 }
1001 rx_desc = &streamer_priv->streamer_rx_ring[(streamer_priv->rx_ring_last_received+1) & (STREAMER_RX_RING_SIZE-1)];
1002
1003 length = rx_desc->framelen_buflen & 0xffff; /* buffer length */
1004 streamer_priv->rx_ring_last_received = (streamer_priv->rx_ring_last_received+1) & (STREAMER_RX_RING_SIZE - 1);
1005 rx_ring_last_received = streamer_priv->rx_ring_last_received;
1006 } while (1);
1007
1008 skb->protocol = tr_type_trans(skb, dev);
1009 /* send up to the protocol */
1010 netif_rx(skb);
1011 }
1012 streamer_priv->streamer_stats.rx_packets++;
1013 streamer_priv->streamer_stats.rx_bytes += length;
1014 } /* if skb == null */
1015 } /* end received without errors */
1016
1017 /* try the next one */
1018 rx_desc = &streamer_priv->streamer_rx_ring[(rx_ring_last_received + 1) & (STREAMER_RX_RING_SIZE - 1)];
1019 } /* end for all completed rx descriptors */
1020 }
1021
streamer_interrupt(int irq,void * dev_id)1022 static irqreturn_t streamer_interrupt(int irq, void *dev_id)
1023 {
1024 struct net_device *dev = (struct net_device *) dev_id;
1025 struct streamer_private *streamer_priv =
1026 netdev_priv(dev);
1027 __u8 __iomem *streamer_mmio = streamer_priv->streamer_mmio;
1028 __u16 sisr;
1029 __u16 misr;
1030 u8 max_intr = MAX_INTR;
1031
1032 spin_lock(&streamer_priv->streamer_lock);
1033 sisr = readw(streamer_mmio + SISR);
1034
1035 while((sisr & (SISR_MI | SISR_SRB_REPLY | SISR_ADAPTER_CHECK | SISR_ASB_FREE |
1036 SISR_ARB_CMD | SISR_TRB_REPLY | SISR_PAR_ERR | SISR_SERR_ERR))
1037 && (max_intr > 0)) {
1038
1039 if(sisr & SISR_PAR_ERR) {
1040 writew(~SISR_PAR_ERR, streamer_mmio + SISR_RUM);
1041 (void)readw(streamer_mmio + SISR_RUM);
1042 }
1043
1044 else if(sisr & SISR_SERR_ERR) {
1045 writew(~SISR_SERR_ERR, streamer_mmio + SISR_RUM);
1046 (void)readw(streamer_mmio + SISR_RUM);
1047 }
1048
1049 else if(sisr & SISR_MI) {
1050 misr = readw(streamer_mmio + MISR_RUM);
1051
1052 if (misr & MISR_TX2_EOF) {
1053 while(streamer_priv->streamer_tx_ring[(streamer_priv->tx_ring_last_status + 1) & (STREAMER_TX_RING_SIZE - 1)].status) {
1054 streamer_priv->tx_ring_last_status = (streamer_priv->tx_ring_last_status + 1) & (STREAMER_TX_RING_SIZE - 1);
1055 streamer_priv->free_tx_ring_entries++;
1056 streamer_priv->streamer_stats.tx_bytes += streamer_priv->tx_ring_skb[streamer_priv->tx_ring_last_status]->len;
1057 streamer_priv->streamer_stats.tx_packets++;
1058 dev_kfree_skb_irq(streamer_priv->tx_ring_skb[streamer_priv->tx_ring_last_status]);
1059 streamer_priv->streamer_tx_ring[streamer_priv->tx_ring_last_status].buffer = 0xdeadbeef;
1060 streamer_priv->streamer_tx_ring[streamer_priv->tx_ring_last_status].status = 0;
1061 streamer_priv->streamer_tx_ring[streamer_priv->tx_ring_last_status].bufcnt_framelen = 0;
1062 streamer_priv->streamer_tx_ring[streamer_priv->tx_ring_last_status].buflen = 0;
1063 streamer_priv->streamer_tx_ring[streamer_priv->tx_ring_last_status].rsvd1 = 0;
1064 streamer_priv->streamer_tx_ring[streamer_priv->tx_ring_last_status].rsvd2 = 0;
1065 streamer_priv->streamer_tx_ring[streamer_priv->tx_ring_last_status].rsvd3 = 0;
1066 }
1067 netif_wake_queue(dev);
1068 }
1069
1070 if (misr & MISR_RX_EOF) {
1071 streamer_rx(dev);
1072 }
1073 /* MISR_RX_EOF */
1074
1075 if (misr & MISR_RX_NOBUF) {
1076 /* According to the documentation, we don't have to do anything,
1077 * but trapping it keeps it out of /var/log/messages.
1078 */
1079 } /* SISR_RX_NOBUF */
1080
1081 writew(~misr, streamer_mmio + MISR_RUM);
1082 (void)readw(streamer_mmio + MISR_RUM);
1083 }
1084
1085 else if (sisr & SISR_SRB_REPLY) {
1086 if (streamer_priv->srb_queued == 1) {
1087 wake_up_interruptible(&streamer_priv->srb_wait);
1088 } else if (streamer_priv->srb_queued == 2) {
1089 streamer_srb_bh(dev);
1090 }
1091 streamer_priv->srb_queued = 0;
1092
1093 writew(~SISR_SRB_REPLY, streamer_mmio + SISR_RUM);
1094 (void)readw(streamer_mmio + SISR_RUM);
1095 }
1096
1097 else if (sisr & SISR_ADAPTER_CHECK) {
1098 printk(KERN_WARNING "%s: Adapter Check Interrupt Raised, 8 bytes of information follow:\n", dev->name);
1099 writel(readl(streamer_mmio + LAPWWO), streamer_mmio + LAPA);
1100 printk(KERN_WARNING "%s: Words %x:%x:%x:%x:\n",
1101 dev->name, readw(streamer_mmio + LAPDINC),
1102 ntohs(readw(streamer_mmio + LAPDINC)),
1103 ntohs(readw(streamer_mmio + LAPDINC)),
1104 ntohs(readw(streamer_mmio + LAPDINC)));
1105 netif_stop_queue(dev);
1106 netif_carrier_off(dev);
1107 printk(KERN_WARNING "%s: Adapter must be manually reset.\n", dev->name);
1108 }
1109
1110 /* SISR_ADAPTER_CHECK */
1111 else if (sisr & SISR_ASB_FREE) {
1112 /* Wake up anything that is waiting for the asb response */
1113 if (streamer_priv->asb_queued) {
1114 streamer_asb_bh(dev);
1115 }
1116 writew(~SISR_ASB_FREE, streamer_mmio + SISR_RUM);
1117 (void)readw(streamer_mmio + SISR_RUM);
1118 }
1119 /* SISR_ASB_FREE */
1120 else if (sisr & SISR_ARB_CMD) {
1121 streamer_arb_cmd(dev);
1122 writew(~SISR_ARB_CMD, streamer_mmio + SISR_RUM);
1123 (void)readw(streamer_mmio + SISR_RUM);
1124 }
1125 /* SISR_ARB_CMD */
1126 else if (sisr & SISR_TRB_REPLY) {
1127 /* Wake up anything that is waiting for the trb response */
1128 if (streamer_priv->trb_queued) {
1129 wake_up_interruptible(&streamer_priv->
1130 trb_wait);
1131 }
1132 streamer_priv->trb_queued = 0;
1133 writew(~SISR_TRB_REPLY, streamer_mmio + SISR_RUM);
1134 (void)readw(streamer_mmio + SISR_RUM);
1135 }
1136 /* SISR_TRB_REPLY */
1137
1138 sisr = readw(streamer_mmio + SISR);
1139 max_intr--;
1140 } /* while() */
1141
1142 spin_unlock(&streamer_priv->streamer_lock) ;
1143 return IRQ_HANDLED;
1144 }
1145
streamer_xmit(struct sk_buff * skb,struct net_device * dev)1146 static int streamer_xmit(struct sk_buff *skb, struct net_device *dev)
1147 {
1148 struct streamer_private *streamer_priv =
1149 netdev_priv(dev);
1150 __u8 __iomem *streamer_mmio = streamer_priv->streamer_mmio;
1151 unsigned long flags ;
1152
1153 spin_lock_irqsave(&streamer_priv->streamer_lock, flags);
1154
1155 if (streamer_priv->free_tx_ring_entries) {
1156 streamer_priv->streamer_tx_ring[streamer_priv->tx_ring_free].status = 0;
1157 streamer_priv->streamer_tx_ring[streamer_priv->tx_ring_free].bufcnt_framelen = 0x00020000 | skb->len;
1158 streamer_priv->streamer_tx_ring[streamer_priv->tx_ring_free].buffer =
1159 cpu_to_le32(pci_map_single(streamer_priv->pci_dev, skb->data, skb->len, PCI_DMA_TODEVICE));
1160 streamer_priv->streamer_tx_ring[streamer_priv->tx_ring_free].rsvd1 = skb->len;
1161 streamer_priv->streamer_tx_ring[streamer_priv->tx_ring_free].rsvd2 = 0;
1162 streamer_priv->streamer_tx_ring[streamer_priv->tx_ring_free].rsvd3 = 0;
1163 streamer_priv->streamer_tx_ring[streamer_priv->tx_ring_free].buflen = skb->len;
1164
1165 streamer_priv->tx_ring_skb[streamer_priv->tx_ring_free] = skb;
1166 streamer_priv->free_tx_ring_entries--;
1167 #if STREAMER_DEBUG_PACKETS
1168 {
1169 int i;
1170 printk("streamer_xmit packet print:\n");
1171 for (i = 0; i < skb->len; i++) {
1172 printk("%x:", skb->data[i]);
1173 if (((i + 1) % 16) == 0)
1174 printk("\n");
1175 }
1176 printk("\n");
1177 }
1178 #endif
1179
1180 writel(cpu_to_le32(pci_map_single(streamer_priv->pci_dev,
1181 &streamer_priv->streamer_tx_ring[streamer_priv->tx_ring_free],
1182 sizeof(struct streamer_tx_desc), PCI_DMA_TODEVICE)),
1183 streamer_mmio + TX2LFDA);
1184 (void)readl(streamer_mmio + TX2LFDA);
1185
1186 streamer_priv->tx_ring_free = (streamer_priv->tx_ring_free + 1) & (STREAMER_TX_RING_SIZE - 1);
1187 spin_unlock_irqrestore(&streamer_priv->streamer_lock,flags);
1188 return 0;
1189 } else {
1190 netif_stop_queue(dev);
1191 spin_unlock_irqrestore(&streamer_priv->streamer_lock,flags);
1192 return 1;
1193 }
1194 }
1195
1196
streamer_close(struct net_device * dev)1197 static int streamer_close(struct net_device *dev)
1198 {
1199 struct streamer_private *streamer_priv =
1200 netdev_priv(dev);
1201 __u8 __iomem *streamer_mmio = streamer_priv->streamer_mmio;
1202 unsigned long flags;
1203 int i;
1204
1205 netif_stop_queue(dev);
1206 netif_carrier_off(dev);
1207 writew(streamer_priv->srb, streamer_mmio + LAPA);
1208 writew(htons(SRB_CLOSE_ADAPTER << 8),streamer_mmio+LAPDINC);
1209 writew(htons(STREAMER_CLEAR_RET_CODE << 8), streamer_mmio+LAPDINC);
1210
1211 spin_lock_irqsave(&streamer_priv->streamer_lock, flags);
1212
1213 streamer_priv->srb_queued = 1;
1214 writew(LISR_SRB_CMD, streamer_mmio + LISR_SUM);
1215
1216 spin_unlock_irqrestore(&streamer_priv->streamer_lock, flags);
1217
1218 while (streamer_priv->srb_queued)
1219 {
1220 interruptible_sleep_on_timeout(&streamer_priv->srb_wait,
1221 jiffies + 60 * HZ);
1222 if (signal_pending(current))
1223 {
1224 printk(KERN_WARNING "%s: SRB timed out.\n", dev->name);
1225 printk(KERN_WARNING "SISR=%x MISR=%x LISR=%x\n",
1226 readw(streamer_mmio + SISR),
1227 readw(streamer_mmio + MISR_RUM),
1228 readw(streamer_mmio + LISR));
1229 streamer_priv->srb_queued = 0;
1230 break;
1231 }
1232 }
1233
1234 streamer_priv->rx_ring_last_received = (streamer_priv->rx_ring_last_received + 1) & (STREAMER_RX_RING_SIZE - 1);
1235
1236 for (i = 0; i < STREAMER_RX_RING_SIZE; i++) {
1237 if (streamer_priv->rx_ring_skb[streamer_priv->rx_ring_last_received]) {
1238 dev_kfree_skb(streamer_priv->rx_ring_skb[streamer_priv->rx_ring_last_received]);
1239 }
1240 streamer_priv->rx_ring_last_received = (streamer_priv->rx_ring_last_received + 1) & (STREAMER_RX_RING_SIZE - 1);
1241 }
1242
1243 /* reset tx/rx fifo's and busmaster logic */
1244
1245 /* TBD. Add graceful way to reset the LLC channel without doing a soft reset.
1246 writel(readl(streamer_mmio+BCTL)|(3<<13),streamer_mmio+BCTL);
1247 udelay(1);
1248 writel(readl(streamer_mmio+BCTL)&~(3<<13),streamer_mmio+BCTL);
1249 */
1250
1251 #if STREAMER_DEBUG
1252 writew(streamer_priv->srb, streamer_mmio + LAPA);
1253 printk("srb): ");
1254 for (i = 0; i < 2; i++) {
1255 printk("%x ", ntohs(readw(streamer_mmio + LAPDINC)));
1256 }
1257 printk("\n");
1258 #endif
1259 free_irq(dev->irq, dev);
1260 return 0;
1261 }
1262
streamer_set_rx_mode(struct net_device * dev)1263 static void streamer_set_rx_mode(struct net_device *dev)
1264 {
1265 struct streamer_private *streamer_priv =
1266 netdev_priv(dev);
1267 __u8 __iomem *streamer_mmio = streamer_priv->streamer_mmio;
1268 __u8 options = 0;
1269 struct dev_mc_list *dmi;
1270 unsigned char dev_mc_address[5];
1271 int i;
1272
1273 writel(streamer_priv->srb, streamer_mmio + LAPA);
1274 options = streamer_priv->streamer_copy_all_options;
1275
1276 if (dev->flags & IFF_PROMISC)
1277 options |= (3 << 5); /* All LLC and MAC frames, all through the main rx channel */
1278 else
1279 options &= ~(3 << 5);
1280
1281 /* Only issue the srb if there is a change in options */
1282
1283 if ((options ^ streamer_priv->streamer_copy_all_options))
1284 {
1285 /* Now to issue the srb command to alter the copy.all.options */
1286 writew(htons(SRB_MODIFY_RECEIVE_OPTIONS << 8), streamer_mmio+LAPDINC);
1287 writew(htons(STREAMER_CLEAR_RET_CODE << 8), streamer_mmio+LAPDINC);
1288 writew(htons((streamer_priv->streamer_receive_options << 8) | options),streamer_mmio+LAPDINC);
1289 writew(htons(0x4a41),streamer_mmio+LAPDINC);
1290 writew(htons(0x4d45),streamer_mmio+LAPDINC);
1291 writew(htons(0x5320),streamer_mmio+LAPDINC);
1292 writew(0x2020, streamer_mmio + LAPDINC);
1293
1294 streamer_priv->srb_queued = 2; /* Can't sleep, use srb_bh */
1295
1296 writel(LISR_SRB_CMD, streamer_mmio + LISR_SUM);
1297
1298 streamer_priv->streamer_copy_all_options = options;
1299 return;
1300 }
1301
1302 /* Set the functional addresses we need for multicast */
1303 writel(streamer_priv->srb,streamer_mmio+LAPA);
1304 dev_mc_address[0] = dev_mc_address[1] = dev_mc_address[2] = dev_mc_address[3] = 0 ;
1305
1306 for (i=0,dmi=dev->mc_list;i < dev->mc_count; i++,dmi = dmi->next)
1307 {
1308 dev_mc_address[0] |= dmi->dmi_addr[2] ;
1309 dev_mc_address[1] |= dmi->dmi_addr[3] ;
1310 dev_mc_address[2] |= dmi->dmi_addr[4] ;
1311 dev_mc_address[3] |= dmi->dmi_addr[5] ;
1312 }
1313
1314 writew(htons(SRB_SET_FUNC_ADDRESS << 8),streamer_mmio+LAPDINC);
1315 writew(htons(STREAMER_CLEAR_RET_CODE << 8), streamer_mmio+LAPDINC);
1316 writew(0,streamer_mmio+LAPDINC);
1317 writew(htons( (dev_mc_address[0] << 8) | dev_mc_address[1]),streamer_mmio+LAPDINC);
1318 writew(htons( (dev_mc_address[2] << 8) | dev_mc_address[3]),streamer_mmio+LAPDINC);
1319 streamer_priv->srb_queued = 2 ;
1320 writel(LISR_SRB_CMD,streamer_mmio+LISR_SUM);
1321 }
1322
streamer_srb_bh(struct net_device * dev)1323 static void streamer_srb_bh(struct net_device *dev)
1324 {
1325 struct streamer_private *streamer_priv = netdev_priv(dev);
1326 __u8 __iomem *streamer_mmio = streamer_priv->streamer_mmio;
1327 __u16 srb_word;
1328
1329 writew(streamer_priv->srb, streamer_mmio + LAPA);
1330 srb_word=ntohs(readw(streamer_mmio+LAPDINC)) >> 8;
1331
1332 switch (srb_word) {
1333
1334 /* SRB_MODIFY_RECEIVE_OPTIONS i.e. set_multicast_list options (promiscuous)
1335 * At some point we should do something if we get an error, such as
1336 * resetting the IFF_PROMISC flag in dev
1337 */
1338
1339 case SRB_MODIFY_RECEIVE_OPTIONS:
1340 srb_word=ntohs(readw(streamer_mmio+LAPDINC)) >> 8;
1341
1342 switch (srb_word) {
1343 case 0x01:
1344 printk(KERN_WARNING "%s: Unrecognized srb command\n", dev->name);
1345 break;
1346 case 0x04:
1347 printk(KERN_WARNING "%s: Adapter must be open for this operation, doh!!\n", dev->name);
1348 break;
1349 default:
1350 if (streamer_priv->streamer_message_level)
1351 printk(KERN_WARNING "%s: Receive Options Modified to %x,%x\n",
1352 dev->name,
1353 streamer_priv->streamer_copy_all_options,
1354 streamer_priv->streamer_receive_options);
1355 break;
1356 } /* switch srb[2] */
1357 break;
1358
1359
1360 /* SRB_SET_GROUP_ADDRESS - Multicast group setting
1361 */
1362 case SRB_SET_GROUP_ADDRESS:
1363 srb_word=ntohs(readw(streamer_mmio+LAPDINC)) >> 8;
1364 switch (srb_word) {
1365 case 0x00:
1366 break;
1367 case 0x01:
1368 printk(KERN_WARNING "%s: Unrecognized srb command \n",dev->name);
1369 break;
1370 case 0x04:
1371 printk(KERN_WARNING "%s: Adapter must be open for this operation, doh!!\n", dev->name);
1372 break;
1373 case 0x3c:
1374 printk(KERN_WARNING "%s: Group/Functional address indicator bits not set correctly\n", dev->name);
1375 break;
1376 case 0x3e: /* If we ever implement individual multicast addresses, will need to deal with this */
1377 printk(KERN_WARNING "%s: Group address registers full\n", dev->name);
1378 break;
1379 case 0x55:
1380 printk(KERN_INFO "%s: Group Address already set.\n", dev->name);
1381 break;
1382 default:
1383 break;
1384 } /* switch srb[2] */
1385 break;
1386
1387
1388 /* SRB_RESET_GROUP_ADDRESS - Remove a multicast address from group list
1389 */
1390 case SRB_RESET_GROUP_ADDRESS:
1391 srb_word=ntohs(readw(streamer_mmio+LAPDINC)) >> 8;
1392 switch (srb_word) {
1393 case 0x00:
1394 break;
1395 case 0x01:
1396 printk(KERN_WARNING "%s: Unrecognized srb command \n", dev->name);
1397 break;
1398 case 0x04:
1399 printk(KERN_WARNING "%s: Adapter must be open for this operation, doh!!\n", dev->name);
1400 break;
1401 case 0x39: /* Must deal with this if individual multicast addresses used */
1402 printk(KERN_INFO "%s: Group address not found \n", dev->name);
1403 break;
1404 default:
1405 break;
1406 } /* switch srb[2] */
1407 break;
1408
1409
1410 /* SRB_SET_FUNC_ADDRESS - Called by the set_rx_mode
1411 */
1412
1413 case SRB_SET_FUNC_ADDRESS:
1414 srb_word=ntohs(readw(streamer_mmio+LAPDINC)) >> 8;
1415 switch (srb_word) {
1416 case 0x00:
1417 if (streamer_priv->streamer_message_level)
1418 printk(KERN_INFO "%s: Functional Address Mask Set \n", dev->name);
1419 break;
1420 case 0x01:
1421 printk(KERN_WARNING "%s: Unrecognized srb command \n", dev->name);
1422 break;
1423 case 0x04:
1424 printk(KERN_WARNING "%s: Adapter must be open for this operation, doh!!\n", dev->name);
1425 break;
1426 default:
1427 break;
1428 } /* switch srb[2] */
1429 break;
1430
1431 /* SRB_READ_LOG - Read and reset the adapter error counters
1432 */
1433
1434 case SRB_READ_LOG:
1435 srb_word=ntohs(readw(streamer_mmio+LAPDINC)) >> 8;
1436 switch (srb_word) {
1437 case 0x00:
1438 {
1439 int i;
1440 if (streamer_priv->streamer_message_level)
1441 printk(KERN_INFO "%s: Read Log command complete\n", dev->name);
1442 printk("Read Log statistics: ");
1443 writew(streamer_priv->srb + 6,
1444 streamer_mmio + LAPA);
1445 for (i = 0; i < 5; i++) {
1446 printk("%x:", ntohs(readw(streamer_mmio + LAPDINC)));
1447 }
1448 printk("\n");
1449 }
1450 break;
1451 case 0x01:
1452 printk(KERN_WARNING "%s: Unrecognized srb command \n", dev->name);
1453 break;
1454 case 0x04:
1455 printk(KERN_WARNING "%s: Adapter must be open for this operation, doh!!\n", dev->name);
1456 break;
1457
1458 } /* switch srb[2] */
1459 break;
1460
1461 /* SRB_READ_SR_COUNTERS - Read and reset the source routing bridge related counters */
1462
1463 case SRB_READ_SR_COUNTERS:
1464 srb_word=ntohs(readw(streamer_mmio+LAPDINC)) >> 8;
1465 switch (srb_word) {
1466 case 0x00:
1467 if (streamer_priv->streamer_message_level)
1468 printk(KERN_INFO "%s: Read Source Routing Counters issued\n", dev->name);
1469 break;
1470 case 0x01:
1471 printk(KERN_WARNING "%s: Unrecognized srb command \n", dev->name);
1472 break;
1473 case 0x04:
1474 printk(KERN_WARNING "%s: Adapter must be open for this operation, doh!!\n", dev->name);
1475 break;
1476 default:
1477 break;
1478 } /* switch srb[2] */
1479 break;
1480
1481 default:
1482 printk(KERN_WARNING "%s: Unrecognized srb bh return value.\n", dev->name);
1483 break;
1484 } /* switch srb[0] */
1485 }
1486
streamer_get_stats(struct net_device * dev)1487 static struct net_device_stats *streamer_get_stats(struct net_device *dev)
1488 {
1489 struct streamer_private *streamer_priv;
1490 streamer_priv = netdev_priv(dev);
1491 return (struct net_device_stats *) &streamer_priv->streamer_stats;
1492 }
1493
streamer_set_mac_address(struct net_device * dev,void * addr)1494 static int streamer_set_mac_address(struct net_device *dev, void *addr)
1495 {
1496 struct sockaddr *saddr = addr;
1497 struct streamer_private *streamer_priv = netdev_priv(dev);
1498
1499 if (netif_running(dev))
1500 {
1501 printk(KERN_WARNING "%s: Cannot set mac/laa address while card is open\n", dev->name);
1502 return -EIO;
1503 }
1504
1505 memcpy(streamer_priv->streamer_laa, saddr->sa_data, dev->addr_len);
1506
1507 if (streamer_priv->streamer_message_level) {
1508 printk(KERN_INFO "%s: MAC/LAA Set to = %x.%x.%x.%x.%x.%x\n",
1509 dev->name, streamer_priv->streamer_laa[0],
1510 streamer_priv->streamer_laa[1],
1511 streamer_priv->streamer_laa[2],
1512 streamer_priv->streamer_laa[3],
1513 streamer_priv->streamer_laa[4],
1514 streamer_priv->streamer_laa[5]);
1515 }
1516 return 0;
1517 }
1518
streamer_arb_cmd(struct net_device * dev)1519 static void streamer_arb_cmd(struct net_device *dev)
1520 {
1521 struct streamer_private *streamer_priv =
1522 netdev_priv(dev);
1523 __u8 __iomem *streamer_mmio = streamer_priv->streamer_mmio;
1524 __u8 header_len;
1525 __u16 frame_len, buffer_len;
1526 struct sk_buff *mac_frame;
1527 __u8 frame_data[256];
1528 __u16 buff_off;
1529 __u16 lan_status = 0, lan_status_diff; /* Initialize to stop compiler warning */
1530 __u8 fdx_prot_error;
1531 __u16 next_ptr;
1532 __u16 arb_word;
1533
1534 #if STREAMER_NETWORK_MONITOR
1535 struct trh_hdr *mac_hdr;
1536 #endif
1537
1538 writew(streamer_priv->arb, streamer_mmio + LAPA);
1539 arb_word=ntohs(readw(streamer_mmio+LAPD)) >> 8;
1540
1541 if (arb_word == ARB_RECEIVE_DATA) { /* Receive.data, MAC frames */
1542 writew(streamer_priv->arb + 6, streamer_mmio + LAPA);
1543 streamer_priv->mac_rx_buffer = buff_off = ntohs(readw(streamer_mmio + LAPDINC));
1544 header_len=ntohs(readw(streamer_mmio+LAPDINC)) >> 8; /* 802.5 Token-Ring Header Length */
1545 frame_len = ntohs(readw(streamer_mmio + LAPDINC));
1546
1547 #if STREAMER_DEBUG
1548 {
1549 int i;
1550 __u16 next;
1551 __u8 status;
1552 __u16 len;
1553
1554 writew(ntohs(buff_off), streamer_mmio + LAPA); /*setup window to frame data */
1555 next = htons(readw(streamer_mmio + LAPDINC));
1556 status =
1557 ntohs(readw(streamer_mmio + LAPDINC)) & 0xff;
1558 len = ntohs(readw(streamer_mmio + LAPDINC));
1559
1560 /* print out 1st 14 bytes of frame data */
1561 for (i = 0; i < 7; i++) {
1562 printk("Loc %d = %04x\n", i,
1563 ntohs(readw
1564 (streamer_mmio + LAPDINC)));
1565 }
1566
1567 printk("next %04x, fs %02x, len %04x \n", next,
1568 status, len);
1569 }
1570 #endif
1571 if (!(mac_frame = dev_alloc_skb(frame_len))) {
1572 printk(KERN_WARNING "%s: Memory squeeze, dropping frame.\n",
1573 dev->name);
1574 goto drop_frame;
1575 }
1576 /* Walk the buffer chain, creating the frame */
1577
1578 do {
1579 int i;
1580 __u16 rx_word;
1581
1582 writew(htons(buff_off), streamer_mmio + LAPA); /* setup window to frame data */
1583 next_ptr = ntohs(readw(streamer_mmio + LAPDINC));
1584 readw(streamer_mmio + LAPDINC); /* read thru status word */
1585 buffer_len = ntohs(readw(streamer_mmio + LAPDINC));
1586
1587 if (buffer_len > 256)
1588 break;
1589
1590 i = 0;
1591 while (i < buffer_len) {
1592 rx_word=ntohs(readw(streamer_mmio+LAPDINC));
1593 frame_data[i]=rx_word >> 8;
1594 frame_data[i+1]=rx_word & 0xff;
1595 i += 2;
1596 }
1597
1598 memcpy(skb_put(mac_frame, buffer_len),
1599 frame_data, buffer_len);
1600 } while (next_ptr && (buff_off = next_ptr));
1601
1602 mac_frame->protocol = tr_type_trans(mac_frame, dev);
1603 #if STREAMER_NETWORK_MONITOR
1604 printk(KERN_WARNING "%s: Received MAC Frame, details: \n",
1605 dev->name);
1606 mac_hdr = tr_hdr(mac_frame);
1607 printk(KERN_WARNING
1608 "%s: MAC Frame Dest. Addr: %pM\n",
1609 dev->name, mac_hdr->daddr);
1610 printk(KERN_WARNING
1611 "%s: MAC Frame Srce. Addr: %pM\n",
1612 dev->name, mac_hdr->saddr);
1613 #endif
1614 netif_rx(mac_frame);
1615
1616 /* Now tell the card we have dealt with the received frame */
1617 drop_frame:
1618 /* Set LISR Bit 1 */
1619 writel(LISR_ARB_FREE, streamer_priv->streamer_mmio + LISR_SUM);
1620
1621 /* Is the ASB free ? */
1622
1623 if (!(readl(streamer_priv->streamer_mmio + SISR) & SISR_ASB_FREE))
1624 {
1625 streamer_priv->asb_queued = 1;
1626 writel(LISR_ASB_FREE_REQ, streamer_priv->streamer_mmio + LISR_SUM);
1627 return;
1628 /* Drop out and wait for the bottom half to be run */
1629 }
1630
1631
1632 writew(streamer_priv->asb, streamer_mmio + LAPA);
1633 writew(htons(ASB_RECEIVE_DATA << 8), streamer_mmio+LAPDINC);
1634 writew(htons(STREAMER_CLEAR_RET_CODE << 8), streamer_mmio+LAPDINC);
1635 writew(0, streamer_mmio + LAPDINC);
1636 writew(htons(streamer_priv->mac_rx_buffer), streamer_mmio + LAPD);
1637
1638 writel(LISR_ASB_REPLY | LISR_ASB_FREE_REQ, streamer_priv->streamer_mmio + LISR_SUM);
1639
1640 streamer_priv->asb_queued = 2;
1641 return;
1642
1643 } else if (arb_word == ARB_LAN_CHANGE_STATUS) { /* Lan.change.status */
1644 writew(streamer_priv->arb + 6, streamer_mmio + LAPA);
1645 lan_status = ntohs(readw(streamer_mmio + LAPDINC));
1646 fdx_prot_error = ntohs(readw(streamer_mmio+LAPD)) >> 8;
1647
1648 /* Issue ARB Free */
1649 writew(LISR_ARB_FREE, streamer_priv->streamer_mmio + LISR_SUM);
1650
1651 lan_status_diff = (streamer_priv->streamer_lan_status ^ lan_status) &
1652 lan_status;
1653
1654 if (lan_status_diff & (LSC_LWF | LSC_ARW | LSC_FPE | LSC_RR))
1655 {
1656 if (lan_status_diff & LSC_LWF)
1657 printk(KERN_WARNING "%s: Short circuit detected on the lobe\n", dev->name);
1658 if (lan_status_diff & LSC_ARW)
1659 printk(KERN_WARNING "%s: Auto removal error\n", dev->name);
1660 if (lan_status_diff & LSC_FPE)
1661 printk(KERN_WARNING "%s: FDX Protocol Error\n", dev->name);
1662 if (lan_status_diff & LSC_RR)
1663 printk(KERN_WARNING "%s: Force remove MAC frame received\n", dev->name);
1664
1665 /* Adapter has been closed by the hardware */
1666
1667 /* reset tx/rx fifo's and busmaster logic */
1668
1669 /* @TBD. no llc reset on autostreamer writel(readl(streamer_mmio+BCTL)|(3<<13),streamer_mmio+BCTL);
1670 udelay(1);
1671 writel(readl(streamer_mmio+BCTL)&~(3<<13),streamer_mmio+BCTL); */
1672
1673 netif_stop_queue(dev);
1674 netif_carrier_off(dev);
1675 printk(KERN_WARNING "%s: Adapter must be manually reset.\n", dev->name);
1676 }
1677 /* If serious error */
1678 if (streamer_priv->streamer_message_level) {
1679 if (lan_status_diff & LSC_SIG_LOSS)
1680 printk(KERN_WARNING "%s: No receive signal detected \n", dev->name);
1681 if (lan_status_diff & LSC_HARD_ERR)
1682 printk(KERN_INFO "%s: Beaconing \n", dev->name);
1683 if (lan_status_diff & LSC_SOFT_ERR)
1684 printk(KERN_WARNING "%s: Adapter transmitted Soft Error Report Mac Frame \n", dev->name);
1685 if (lan_status_diff & LSC_TRAN_BCN)
1686 printk(KERN_INFO "%s: We are tranmitting the beacon, aaah\n", dev->name);
1687 if (lan_status_diff & LSC_SS)
1688 printk(KERN_INFO "%s: Single Station on the ring \n", dev->name);
1689 if (lan_status_diff & LSC_RING_REC)
1690 printk(KERN_INFO "%s: Ring recovery ongoing\n", dev->name);
1691 if (lan_status_diff & LSC_FDX_MODE)
1692 printk(KERN_INFO "%s: Operating in FDX mode\n", dev->name);
1693 }
1694
1695 if (lan_status_diff & LSC_CO) {
1696 if (streamer_priv->streamer_message_level)
1697 printk(KERN_INFO "%s: Counter Overflow \n", dev->name);
1698
1699 /* Issue READ.LOG command */
1700
1701 writew(streamer_priv->srb, streamer_mmio + LAPA);
1702 writew(htons(SRB_READ_LOG << 8),streamer_mmio+LAPDINC);
1703 writew(htons(STREAMER_CLEAR_RET_CODE << 8), streamer_mmio+LAPDINC);
1704 writew(0, streamer_mmio + LAPDINC);
1705 streamer_priv->srb_queued = 2; /* Can't sleep, use srb_bh */
1706
1707 writew(LISR_SRB_CMD, streamer_mmio + LISR_SUM);
1708 }
1709
1710 if (lan_status_diff & LSC_SR_CO) {
1711 if (streamer_priv->streamer_message_level)
1712 printk(KERN_INFO "%s: Source routing counters overflow\n", dev->name);
1713
1714 /* Issue a READ.SR.COUNTERS */
1715 writew(streamer_priv->srb, streamer_mmio + LAPA);
1716 writew(htons(SRB_READ_SR_COUNTERS << 8),
1717 streamer_mmio+LAPDINC);
1718 writew(htons(STREAMER_CLEAR_RET_CODE << 8),
1719 streamer_mmio+LAPDINC);
1720 streamer_priv->srb_queued = 2; /* Can't sleep, use srb_bh */
1721 writew(LISR_SRB_CMD, streamer_mmio + LISR_SUM);
1722
1723 }
1724 streamer_priv->streamer_lan_status = lan_status;
1725 } /* Lan.change.status */
1726 else
1727 printk(KERN_WARNING "%s: Unknown arb command \n", dev->name);
1728 }
1729
streamer_asb_bh(struct net_device * dev)1730 static void streamer_asb_bh(struct net_device *dev)
1731 {
1732 struct streamer_private *streamer_priv =
1733 netdev_priv(dev);
1734 __u8 __iomem *streamer_mmio = streamer_priv->streamer_mmio;
1735
1736 if (streamer_priv->asb_queued == 1)
1737 {
1738 /* Dropped through the first time */
1739
1740 writew(streamer_priv->asb, streamer_mmio + LAPA);
1741 writew(htons(ASB_RECEIVE_DATA << 8),streamer_mmio+LAPDINC);
1742 writew(htons(STREAMER_CLEAR_RET_CODE << 8), streamer_mmio+LAPDINC);
1743 writew(0, streamer_mmio + LAPDINC);
1744 writew(htons(streamer_priv->mac_rx_buffer), streamer_mmio + LAPD);
1745
1746 writel(LISR_ASB_REPLY | LISR_ASB_FREE_REQ, streamer_priv->streamer_mmio + LISR_SUM);
1747 streamer_priv->asb_queued = 2;
1748
1749 return;
1750 }
1751
1752 if (streamer_priv->asb_queued == 2) {
1753 __u8 rc;
1754 writew(streamer_priv->asb + 2, streamer_mmio + LAPA);
1755 rc=ntohs(readw(streamer_mmio+LAPD)) >> 8;
1756 switch (rc) {
1757 case 0x01:
1758 printk(KERN_WARNING "%s: Unrecognized command code \n", dev->name);
1759 break;
1760 case 0x26:
1761 printk(KERN_WARNING "%s: Unrecognized buffer address \n", dev->name);
1762 break;
1763 case 0xFF:
1764 /* Valid response, everything should be ok again */
1765 break;
1766 default:
1767 printk(KERN_WARNING "%s: Invalid return code in asb\n", dev->name);
1768 break;
1769 }
1770 }
1771 streamer_priv->asb_queued = 0;
1772 }
1773
streamer_change_mtu(struct net_device * dev,int mtu)1774 static int streamer_change_mtu(struct net_device *dev, int mtu)
1775 {
1776 struct streamer_private *streamer_priv =
1777 netdev_priv(dev);
1778 __u16 max_mtu;
1779
1780 if (streamer_priv->streamer_ring_speed == 4)
1781 max_mtu = 4500;
1782 else
1783 max_mtu = 18000;
1784
1785 if (mtu > max_mtu)
1786 return -EINVAL;
1787 if (mtu < 100)
1788 return -EINVAL;
1789
1790 dev->mtu = mtu;
1791 streamer_priv->pkt_buf_sz = mtu + TR_HLEN;
1792
1793 return 0;
1794 }
1795
1796 #if STREAMER_NETWORK_MONITOR
1797 #ifdef CONFIG_PROC_FS
streamer_proc_info(char * buffer,char ** start,off_t offset,int length,int * eof,void * data)1798 static int streamer_proc_info(char *buffer, char **start, off_t offset,
1799 int length, int *eof, void *data)
1800 {
1801 struct streamer_private *sdev=NULL;
1802 struct pci_dev *pci_device = NULL;
1803 int len = 0;
1804 off_t begin = 0;
1805 off_t pos = 0;
1806 int size;
1807
1808 struct net_device *dev;
1809
1810 size = sprintf(buffer, "IBM LanStreamer/MPC Chipset Token Ring Adapters\n");
1811
1812 pos += size;
1813 len += size;
1814
1815 for(sdev=dev_streamer; sdev; sdev=sdev->next) {
1816 pci_device=sdev->pci_dev;
1817 dev=pci_get_drvdata(pci_device);
1818
1819 size = sprintf_info(buffer + len, dev);
1820 len += size;
1821 pos = begin + len;
1822
1823 if (pos < offset) {
1824 len = 0;
1825 begin = pos;
1826 }
1827 if (pos > offset + length)
1828 break;
1829 } /* for */
1830
1831 *start = buffer + (offset - begin); /* Start of wanted data */
1832 len -= (offset - begin); /* Start slop */
1833 if (len > length)
1834 len = length; /* Ending slop */
1835 return len;
1836 }
1837
sprintf_info(char * buffer,struct net_device * dev)1838 static int sprintf_info(char *buffer, struct net_device *dev)
1839 {
1840 struct streamer_private *streamer_priv =
1841 netdev_priv(dev);
1842 __u8 __iomem *streamer_mmio = streamer_priv->streamer_mmio;
1843 struct streamer_adapter_addr_table sat;
1844 struct streamer_parameters_table spt;
1845 int size = 0;
1846 int i;
1847
1848 writew(streamer_priv->streamer_addr_table_addr, streamer_mmio + LAPA);
1849 for (i = 0; i < 14; i += 2) {
1850 __u16 io_word;
1851 __u8 *datap = (__u8 *) & sat;
1852 io_word=ntohs(readw(streamer_mmio+LAPDINC));
1853 datap[size]=io_word >> 8;
1854 datap[size+1]=io_word & 0xff;
1855 }
1856 writew(streamer_priv->streamer_parms_addr, streamer_mmio + LAPA);
1857 for (i = 0; i < 68; i += 2) {
1858 __u16 io_word;
1859 __u8 *datap = (__u8 *) & spt;
1860 io_word=ntohs(readw(streamer_mmio+LAPDINC));
1861 datap[size]=io_word >> 8;
1862 datap[size+1]=io_word & 0xff;
1863 }
1864
1865 size = sprintf(buffer, "\n%6s: Adapter Address : Node Address : Functional Addr\n", dev->name);
1866
1867 size += sprintf(buffer + size,
1868 "%6s: %pM : %pM : %02x:%02x:%02x:%02x\n",
1869 dev->name, dev->dev_addr, sat.node_addr,
1870 sat.func_addr[0], sat.func_addr[1],
1871 sat.func_addr[2], sat.func_addr[3]);
1872
1873 size += sprintf(buffer + size, "\n%6s: Token Ring Parameters Table:\n", dev->name);
1874
1875 size += sprintf(buffer + size, "%6s: Physical Addr : Up Node Address : Poll Address : AccPri : Auth Src : Att Code :\n", dev->name);
1876
1877 size += sprintf(buffer + size,
1878 "%6s: %02x:%02x:%02x:%02x : %pM : %pM : %04x : %04x : %04x :\n",
1879 dev->name, spt.phys_addr[0], spt.phys_addr[1],
1880 spt.phys_addr[2], spt.phys_addr[3],
1881 spt.up_node_addr, spt.poll_addr,
1882 ntohs(spt.acc_priority), ntohs(spt.auth_source_class),
1883 ntohs(spt.att_code));
1884
1885 size += sprintf(buffer + size, "%6s: Source Address : Bcn T : Maj. V : Lan St : Lcl Rg : Mon Err : Frame Correl : \n", dev->name);
1886
1887 size += sprintf(buffer + size,
1888 "%6s: %pM : %04x : %04x : %04x : %04x : %04x : %04x : \n",
1889 dev->name, spt.source_addr,
1890 ntohs(spt.beacon_type), ntohs(spt.major_vector),
1891 ntohs(spt.lan_status), ntohs(spt.local_ring),
1892 ntohs(spt.mon_error), ntohs(spt.frame_correl));
1893
1894 size += sprintf(buffer + size, "%6s: Beacon Details : Tx : Rx : NAUN Node Address : NAUN Node Phys : \n",
1895 dev->name);
1896
1897 size += sprintf(buffer + size,
1898 "%6s: : %02x : %02x : %pM : %02x:%02x:%02x:%02x : \n",
1899 dev->name, ntohs(spt.beacon_transmit),
1900 ntohs(spt.beacon_receive),
1901 spt.beacon_naun,
1902 spt.beacon_phys[0], spt.beacon_phys[1],
1903 spt.beacon_phys[2], spt.beacon_phys[3]);
1904 return size;
1905 }
1906 #endif
1907 #endif
1908
1909 static struct pci_driver streamer_pci_driver = {
1910 .name = "lanstreamer",
1911 .id_table = streamer_pci_tbl,
1912 .probe = streamer_init_one,
1913 .remove = __devexit_p(streamer_remove_one),
1914 };
1915
streamer_init_module(void)1916 static int __init streamer_init_module(void) {
1917 return pci_register_driver(&streamer_pci_driver);
1918 }
1919
streamer_cleanup_module(void)1920 static void __exit streamer_cleanup_module(void) {
1921 pci_unregister_driver(&streamer_pci_driver);
1922 }
1923
1924 module_init(streamer_init_module);
1925 module_exit(streamer_cleanup_module);
1926 MODULE_LICENSE("GPL");
1927