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24#define DEBUG
25#define VERBOSE_DEBUG
26
27#include <linux/interrupt.h>
28#include <linux/module.h>
29#include <linux/kernel.h>
30#include <linux/errno.h>
31#include <linux/ioport.h>
32#include <linux/types.h>
33#include <linux/pci.h>
34#include <linux/atm.h>
35#include <linux/atmdev.h>
36#include <linux/skbuff.h>
37#include <linux/sysfs.h>
38#include <linux/device.h>
39#include <linux/kobject.h>
40#include <linux/firmware.h>
41#include <linux/ctype.h>
42#include <linux/swab.h>
43#include <linux/slab.h>
44
45#define VERSION "0.07"
46#define PTAG "solos-pci"
47
48#define CONFIG_RAM_SIZE 128
49#define FLAGS_ADDR 0x7C
50#define IRQ_EN_ADDR 0x78
51#define FPGA_VER 0x74
52#define IRQ_CLEAR 0x70
53#define WRITE_FLASH 0x6C
54#define PORTS 0x68
55#define FLASH_BLOCK 0x64
56#define FLASH_BUSY 0x60
57#define FPGA_MODE 0x5C
58#define FLASH_MODE 0x58
59#define TX_DMA_ADDR(port) (0x40 + (4 * (port)))
60#define RX_DMA_ADDR(port) (0x30 + (4 * (port)))
61
62#define DATA_RAM_SIZE 32768
63#define BUF_SIZE 2048
64#define OLD_BUF_SIZE 4096
65#define FPGA_PAGE 528
66#define SOLOS_PAGE 512
67#define FPGA_BLOCK (FPGA_PAGE * 8)
68#define SOLOS_BLOCK (SOLOS_PAGE * 8)
69
70#define RX_BUF(card, nr) ((card->buffers) + (nr)*(card->buffer_size)*2)
71#define TX_BUF(card, nr) ((card->buffers) + (nr)*(card->buffer_size)*2 + (card->buffer_size))
72#define FLASH_BUF ((card->buffers) + 4*(card->buffer_size)*2)
73
74#define RX_DMA_SIZE 2048
75
76#define FPGA_VERSION(a,b) (((a) << 8) + (b))
77#define LEGACY_BUFFERS 2
78#define DMA_SUPPORTED 4
79
80static int reset = 0;
81static int atmdebug = 0;
82static int firmware_upgrade = 0;
83static int fpga_upgrade = 0;
84static int db_firmware_upgrade = 0;
85static int db_fpga_upgrade = 0;
86
87struct pkt_hdr {
88 __le16 size;
89 __le16 vpi;
90 __le16 vci;
91 __le16 type;
92};
93
94struct solos_skb_cb {
95 struct atm_vcc *vcc;
96 uint32_t dma_addr;
97};
98
99
100#define SKB_CB(skb) ((struct solos_skb_cb *)skb->cb)
101
102#define PKT_DATA 0
103#define PKT_COMMAND 1
104#define PKT_POPEN 3
105#define PKT_PCLOSE 4
106#define PKT_STATUS 5
107
108struct solos_card {
109 void __iomem *config_regs;
110 void __iomem *buffers;
111 int nr_ports;
112 int tx_mask;
113 struct pci_dev *dev;
114 struct atm_dev *atmdev[4];
115 struct tasklet_struct tlet;
116 spinlock_t tx_lock;
117 spinlock_t tx_queue_lock;
118 spinlock_t cli_queue_lock;
119 spinlock_t param_queue_lock;
120 struct list_head param_queue;
121 struct sk_buff_head tx_queue[4];
122 struct sk_buff_head cli_queue[4];
123 struct sk_buff *tx_skb[4];
124 struct sk_buff *rx_skb[4];
125 wait_queue_head_t param_wq;
126 wait_queue_head_t fw_wq;
127 int using_dma;
128 int fpga_version;
129 int buffer_size;
130};
131
132
133struct solos_param {
134 struct list_head list;
135 pid_t pid;
136 int port;
137 struct sk_buff *response;
138};
139
140#define SOLOS_CHAN(atmdev) ((int)(unsigned long)(atmdev)->phy_data)
141
142MODULE_AUTHOR("Traverse Technologies <support@traverse.com.au>");
143MODULE_DESCRIPTION("Solos PCI driver");
144MODULE_VERSION(VERSION);
145MODULE_LICENSE("GPL");
146MODULE_FIRMWARE("solos-FPGA.bin");
147MODULE_FIRMWARE("solos-Firmware.bin");
148MODULE_FIRMWARE("solos-db-FPGA.bin");
149MODULE_PARM_DESC(reset, "Reset Solos chips on startup");
150MODULE_PARM_DESC(atmdebug, "Print ATM data");
151MODULE_PARM_DESC(firmware_upgrade, "Initiate Solos firmware upgrade");
152MODULE_PARM_DESC(fpga_upgrade, "Initiate FPGA upgrade");
153MODULE_PARM_DESC(db_firmware_upgrade, "Initiate daughter board Solos firmware upgrade");
154MODULE_PARM_DESC(db_fpga_upgrade, "Initiate daughter board FPGA upgrade");
155module_param(reset, int, 0444);
156module_param(atmdebug, int, 0644);
157module_param(firmware_upgrade, int, 0444);
158module_param(fpga_upgrade, int, 0444);
159module_param(db_firmware_upgrade, int, 0444);
160module_param(db_fpga_upgrade, int, 0444);
161
162static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb,
163 struct atm_vcc *vcc);
164static uint32_t fpga_tx(struct solos_card *);
165static irqreturn_t solos_irq(int irq, void *dev_id);
166static struct atm_vcc* find_vcc(struct atm_dev *dev, short vpi, int vci);
167static int list_vccs(int vci);
168static void release_vccs(struct atm_dev *dev);
169static int atm_init(struct solos_card *, struct device *);
170static void atm_remove(struct solos_card *);
171static int send_command(struct solos_card *card, int dev, const char *buf, size_t size);
172static void solos_bh(unsigned long);
173static int print_buffer(struct sk_buff *buf);
174
175static inline void solos_pop(struct atm_vcc *vcc, struct sk_buff *skb)
176{
177 if (vcc->pop)
178 vcc->pop(vcc, skb);
179 else
180 dev_kfree_skb_any(skb);
181}
182
183static ssize_t solos_param_show(struct device *dev, struct device_attribute *attr,
184 char *buf)
185{
186 struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
187 struct solos_card *card = atmdev->dev_data;
188 struct solos_param prm;
189 struct sk_buff *skb;
190 struct pkt_hdr *header;
191 int buflen;
192
193 buflen = strlen(attr->attr.name) + 10;
194
195 skb = alloc_skb(sizeof(*header) + buflen, GFP_KERNEL);
196 if (!skb) {
197 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in solos_param_show()\n");
198 return -ENOMEM;
199 }
200
201 header = (void *)skb_put(skb, sizeof(*header));
202
203 buflen = snprintf((void *)&header[1], buflen - 1,
204 "L%05d\n%s\n", current->pid, attr->attr.name);
205 skb_put(skb, buflen);
206
207 header->size = cpu_to_le16(buflen);
208 header->vpi = cpu_to_le16(0);
209 header->vci = cpu_to_le16(0);
210 header->type = cpu_to_le16(PKT_COMMAND);
211
212 prm.pid = current->pid;
213 prm.response = NULL;
214 prm.port = SOLOS_CHAN(atmdev);
215
216 spin_lock_irq(&card->param_queue_lock);
217 list_add(&prm.list, &card->param_queue);
218 spin_unlock_irq(&card->param_queue_lock);
219
220 fpga_queue(card, prm.port, skb, NULL);
221
222 wait_event_timeout(card->param_wq, prm.response, 5 * HZ);
223
224 spin_lock_irq(&card->param_queue_lock);
225 list_del(&prm.list);
226 spin_unlock_irq(&card->param_queue_lock);
227
228 if (!prm.response)
229 return -EIO;
230
231 buflen = prm.response->len;
232 memcpy(buf, prm.response->data, buflen);
233 kfree_skb(prm.response);
234
235 return buflen;
236}
237
238static ssize_t solos_param_store(struct device *dev, struct device_attribute *attr,
239 const char *buf, size_t count)
240{
241 struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
242 struct solos_card *card = atmdev->dev_data;
243 struct solos_param prm;
244 struct sk_buff *skb;
245 struct pkt_hdr *header;
246 int buflen;
247 ssize_t ret;
248
249 buflen = strlen(attr->attr.name) + 11 + count;
250
251 skb = alloc_skb(sizeof(*header) + buflen, GFP_KERNEL);
252 if (!skb) {
253 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in solos_param_store()\n");
254 return -ENOMEM;
255 }
256
257 header = (void *)skb_put(skb, sizeof(*header));
258
259 buflen = snprintf((void *)&header[1], buflen - 1,
260 "L%05d\n%s\n%s\n", current->pid, attr->attr.name, buf);
261
262 skb_put(skb, buflen);
263 header->size = cpu_to_le16(buflen);
264 header->vpi = cpu_to_le16(0);
265 header->vci = cpu_to_le16(0);
266 header->type = cpu_to_le16(PKT_COMMAND);
267
268 prm.pid = current->pid;
269 prm.response = NULL;
270 prm.port = SOLOS_CHAN(atmdev);
271
272 spin_lock_irq(&card->param_queue_lock);
273 list_add(&prm.list, &card->param_queue);
274 spin_unlock_irq(&card->param_queue_lock);
275
276 fpga_queue(card, prm.port, skb, NULL);
277
278 wait_event_timeout(card->param_wq, prm.response, 5 * HZ);
279
280 spin_lock_irq(&card->param_queue_lock);
281 list_del(&prm.list);
282 spin_unlock_irq(&card->param_queue_lock);
283
284 skb = prm.response;
285
286 if (!skb)
287 return -EIO;
288
289 buflen = skb->len;
290
291
292 if (skb->data[buflen - 1] == '\n')
293 buflen--;
294
295 if (buflen == 2 && !strncmp(skb->data, "OK", 2))
296 ret = count;
297 else if (buflen == 5 && !strncmp(skb->data, "ERROR", 5))
298 ret = -EIO;
299 else {
300
301
302 skb->data[buflen] = 0;
303
304 dev_warn(&card->dev->dev, "Unexpected parameter response: '%s'\n",
305 skb->data);
306 ret = -EIO;
307 }
308 kfree_skb(skb);
309
310 return ret;
311}
312
313static char *next_string(struct sk_buff *skb)
314{
315 int i = 0;
316 char *this = skb->data;
317
318 for (i = 0; i < skb->len; i++) {
319 if (this[i] == '\n') {
320 this[i] = 0;
321 skb_pull(skb, i + 1);
322 return this;
323 }
324 if (!isprint(this[i]))
325 return NULL;
326 }
327 return NULL;
328}
329
330
331
332
333
334
335
336
337
338
339
340
341static int process_status(struct solos_card *card, int port, struct sk_buff *skb)
342{
343 char *str, *end, *state_str, *snr, *attn;
344 int ver, rate_up, rate_down;
345
346 if (!card->atmdev[port])
347 return -ENODEV;
348
349 str = next_string(skb);
350 if (!str)
351 return -EIO;
352
353 ver = simple_strtol(str, NULL, 10);
354 if (ver < 1) {
355 dev_warn(&card->dev->dev, "Unexpected status interrupt version %d\n",
356 ver);
357 return -EIO;
358 }
359
360 str = next_string(skb);
361 if (!str)
362 return -EIO;
363 if (!strcmp(str, "ERROR")) {
364 dev_dbg(&card->dev->dev, "Status packet indicated Solos error on port %d (starting up?)\n",
365 port);
366 return 0;
367 }
368
369 rate_down = simple_strtol(str, &end, 10);
370 if (*end)
371 return -EIO;
372
373 str = next_string(skb);
374 if (!str)
375 return -EIO;
376 rate_up = simple_strtol(str, &end, 10);
377 if (*end)
378 return -EIO;
379
380 state_str = next_string(skb);
381 if (!state_str)
382 return -EIO;
383
384
385 if (strcmp(state_str, "Showtime")) {
386 atm_dev_signal_change(card->atmdev[port], ATM_PHY_SIG_LOST);
387 release_vccs(card->atmdev[port]);
388 dev_info(&card->dev->dev, "Port %d: %s\n", port, state_str);
389 return 0;
390 }
391
392 snr = next_string(skb);
393 if (!snr)
394 return -EIO;
395 attn = next_string(skb);
396 if (!attn)
397 return -EIO;
398
399 dev_info(&card->dev->dev, "Port %d: %s @%d/%d kb/s%s%s%s%s\n",
400 port, state_str, rate_down/1000, rate_up/1000,
401 snr[0]?", SNR ":"", snr, attn[0]?", Attn ":"", attn);
402
403 card->atmdev[port]->link_rate = rate_down / 424;
404 atm_dev_signal_change(card->atmdev[port], ATM_PHY_SIG_FOUND);
405
406 return 0;
407}
408
409static int process_command(struct solos_card *card, int port, struct sk_buff *skb)
410{
411 struct solos_param *prm;
412 unsigned long flags;
413 int cmdpid;
414 int found = 0;
415
416 if (skb->len < 7)
417 return 0;
418
419 if (skb->data[0] != 'L' || !isdigit(skb->data[1]) ||
420 !isdigit(skb->data[2]) || !isdigit(skb->data[3]) ||
421 !isdigit(skb->data[4]) || !isdigit(skb->data[5]) ||
422 skb->data[6] != '\n')
423 return 0;
424
425 cmdpid = simple_strtol(&skb->data[1], NULL, 10);
426
427 spin_lock_irqsave(&card->param_queue_lock, flags);
428 list_for_each_entry(prm, &card->param_queue, list) {
429 if (prm->port == port && prm->pid == cmdpid) {
430 prm->response = skb;
431 skb_pull(skb, 7);
432 wake_up(&card->param_wq);
433 found = 1;
434 break;
435 }
436 }
437 spin_unlock_irqrestore(&card->param_queue_lock, flags);
438 return found;
439}
440
441static ssize_t console_show(struct device *dev, struct device_attribute *attr,
442 char *buf)
443{
444 struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
445 struct solos_card *card = atmdev->dev_data;
446 struct sk_buff *skb;
447 unsigned int len;
448
449 spin_lock(&card->cli_queue_lock);
450 skb = skb_dequeue(&card->cli_queue[SOLOS_CHAN(atmdev)]);
451 spin_unlock(&card->cli_queue_lock);
452 if(skb == NULL)
453 return sprintf(buf, "No data.\n");
454
455 len = skb->len;
456 memcpy(buf, skb->data, len);
457 dev_dbg(&card->dev->dev, "len: %d\n", len);
458
459 kfree_skb(skb);
460 return len;
461}
462
463static int send_command(struct solos_card *card, int dev, const char *buf, size_t size)
464{
465 struct sk_buff *skb;
466 struct pkt_hdr *header;
467
468 if (size > (BUF_SIZE - sizeof(*header))) {
469 dev_dbg(&card->dev->dev, "Command is too big. Dropping request\n");
470 return 0;
471 }
472 skb = alloc_skb(size + sizeof(*header), GFP_ATOMIC);
473 if (!skb) {
474 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in send_command()\n");
475 return 0;
476 }
477
478 header = (void *)skb_put(skb, sizeof(*header));
479
480 header->size = cpu_to_le16(size);
481 header->vpi = cpu_to_le16(0);
482 header->vci = cpu_to_le16(0);
483 header->type = cpu_to_le16(PKT_COMMAND);
484
485 memcpy(skb_put(skb, size), buf, size);
486
487 fpga_queue(card, dev, skb, NULL);
488
489 return 0;
490}
491
492static ssize_t console_store(struct device *dev, struct device_attribute *attr,
493 const char *buf, size_t count)
494{
495 struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
496 struct solos_card *card = atmdev->dev_data;
497 int err;
498
499 err = send_command(card, SOLOS_CHAN(atmdev), buf, count);
500
501 return err?:count;
502}
503
504static DEVICE_ATTR(console, 0644, console_show, console_store);
505
506
507#define SOLOS_ATTR_RO(x) static DEVICE_ATTR(x, 0444, solos_param_show, NULL);
508#define SOLOS_ATTR_RW(x) static DEVICE_ATTR(x, 0644, solos_param_show, solos_param_store);
509
510#include "solos-attrlist.c"
511
512#undef SOLOS_ATTR_RO
513#undef SOLOS_ATTR_RW
514
515#define SOLOS_ATTR_RO(x) &dev_attr_##x.attr,
516#define SOLOS_ATTR_RW(x) &dev_attr_##x.attr,
517
518static struct attribute *solos_attrs[] = {
519#include "solos-attrlist.c"
520 NULL
521};
522
523static struct attribute_group solos_attr_group = {
524 .attrs = solos_attrs,
525 .name = "parameters",
526};
527
528static int flash_upgrade(struct solos_card *card, int chip)
529{
530 const struct firmware *fw;
531 const char *fw_name;
532 uint32_t data32 = 0;
533 int blocksize = 0;
534 int numblocks = 0;
535 int offset;
536
537 switch (chip) {
538 case 0:
539 fw_name = "solos-FPGA.bin";
540 blocksize = FPGA_BLOCK;
541 break;
542 case 1:
543 fw_name = "solos-Firmware.bin";
544 blocksize = SOLOS_BLOCK;
545 break;
546 case 2:
547 if (card->fpga_version > LEGACY_BUFFERS){
548 fw_name = "solos-db-FPGA.bin";
549 blocksize = FPGA_BLOCK;
550 } else {
551 dev_info(&card->dev->dev, "FPGA version doesn't support"
552 " daughter board upgrades\n");
553 return -EPERM;
554 }
555 break;
556 case 3:
557 if (card->fpga_version > LEGACY_BUFFERS){
558 fw_name = "solos-Firmware.bin";
559 blocksize = SOLOS_BLOCK;
560 } else {
561 dev_info(&card->dev->dev, "FPGA version doesn't support"
562 " daughter board upgrades\n");
563 return -EPERM;
564 }
565 break;
566 default:
567 return -ENODEV;
568 }
569
570 if (request_firmware(&fw, fw_name, &card->dev->dev))
571 return -ENOENT;
572
573 dev_info(&card->dev->dev, "Flash upgrade starting\n");
574
575 numblocks = fw->size / blocksize;
576 dev_info(&card->dev->dev, "Firmware size: %zd\n", fw->size);
577 dev_info(&card->dev->dev, "Number of blocks: %d\n", numblocks);
578
579 dev_info(&card->dev->dev, "Changing FPGA to Update mode\n");
580 iowrite32(1, card->config_regs + FPGA_MODE);
581 data32 = ioread32(card->config_regs + FPGA_MODE);
582
583
584 if(chip == 0 || chip == 2)
585 dev_info(&card->dev->dev, "Set FPGA Flash mode to FPGA Chip Erase\n");
586 if(chip == 1 || chip == 3)
587 dev_info(&card->dev->dev, "Set FPGA Flash mode to Solos Chip Erase\n");
588 iowrite32((chip * 2), card->config_regs + FLASH_MODE);
589
590
591 iowrite32(1, card->config_regs + WRITE_FLASH);
592 wait_event(card->fw_wq, !ioread32(card->config_regs + FLASH_BUSY));
593
594 for (offset = 0; offset < fw->size; offset += blocksize) {
595 int i;
596
597
598 iowrite32(0, card->config_regs + WRITE_FLASH);
599
600
601
602 iowrite32(((chip * 2) + 1), card->config_regs + FLASH_MODE);
603
604
605 for(i = 0; i < blocksize; i += 4) {
606 uint32_t word = swahb32p((uint32_t *)(fw->data + offset + i));
607 if(card->fpga_version > LEGACY_BUFFERS)
608 iowrite32(word, FLASH_BUF + i);
609 else
610 iowrite32(word, RX_BUF(card, 3) + i);
611 }
612
613
614 iowrite32(offset / blocksize, card->config_regs + FLASH_BLOCK);
615 iowrite32(1, card->config_regs + WRITE_FLASH);
616 wait_event(card->fw_wq, !ioread32(card->config_regs + FLASH_BUSY));
617 }
618
619 release_firmware(fw);
620 iowrite32(0, card->config_regs + WRITE_FLASH);
621 iowrite32(0, card->config_regs + FPGA_MODE);
622 iowrite32(0, card->config_regs + FLASH_MODE);
623 dev_info(&card->dev->dev, "Returning FPGA to Data mode\n");
624 return 0;
625}
626
627static irqreturn_t solos_irq(int irq, void *dev_id)
628{
629 struct solos_card *card = dev_id;
630 int handled = 1;
631
632 iowrite32(0, card->config_regs + IRQ_CLEAR);
633
634
635 if (card->atmdev[0])
636 tasklet_schedule(&card->tlet);
637 else
638 wake_up(&card->fw_wq);
639
640 return IRQ_RETVAL(handled);
641}
642
643void solos_bh(unsigned long card_arg)
644{
645 struct solos_card *card = (void *)card_arg;
646 uint32_t card_flags;
647 uint32_t rx_done = 0;
648 int port;
649
650
651
652
653
654
655 card_flags = fpga_tx(card);
656
657 for (port = 0; port < card->nr_ports; port++) {
658 if (card_flags & (0x10 << port)) {
659 struct pkt_hdr _hdr, *header;
660 struct sk_buff *skb;
661 struct atm_vcc *vcc;
662 int size;
663
664 if (card->using_dma) {
665 skb = card->rx_skb[port];
666 card->rx_skb[port] = NULL;
667
668 pci_unmap_single(card->dev, SKB_CB(skb)->dma_addr,
669 RX_DMA_SIZE, PCI_DMA_FROMDEVICE);
670
671 header = (void *)skb->data;
672 size = le16_to_cpu(header->size);
673 skb_put(skb, size + sizeof(*header));
674 skb_pull(skb, sizeof(*header));
675 } else {
676 header = &_hdr;
677
678 rx_done |= 0x10 << port;
679
680 memcpy_fromio(header, RX_BUF(card, port), sizeof(*header));
681
682 size = le16_to_cpu(header->size);
683 if (size > (card->buffer_size - sizeof(*header))){
684 dev_warn(&card->dev->dev, "Invalid buffer size\n");
685 continue;
686 }
687
688 skb = alloc_skb(size + 1, GFP_ATOMIC);
689 if (!skb) {
690 if (net_ratelimit())
691 dev_warn(&card->dev->dev, "Failed to allocate sk_buff for RX\n");
692 continue;
693 }
694
695 memcpy_fromio(skb_put(skb, size),
696 RX_BUF(card, port) + sizeof(*header),
697 size);
698 }
699 if (atmdebug) {
700 dev_info(&card->dev->dev, "Received: device %d\n", port);
701 dev_info(&card->dev->dev, "size: %d VPI: %d VCI: %d\n",
702 size, le16_to_cpu(header->vpi),
703 le16_to_cpu(header->vci));
704 print_buffer(skb);
705 }
706
707 switch (le16_to_cpu(header->type)) {
708 case PKT_DATA:
709 vcc = find_vcc(card->atmdev[port], le16_to_cpu(header->vpi),
710 le16_to_cpu(header->vci));
711 if (!vcc) {
712 if (net_ratelimit())
713 dev_warn(&card->dev->dev, "Received packet for unknown VCI.VPI %d.%d on port %d\n",
714 le16_to_cpu(header->vci), le16_to_cpu(header->vpi),
715 port);
716 continue;
717 }
718 atm_charge(vcc, skb->truesize);
719 vcc->push(vcc, skb);
720 atomic_inc(&vcc->stats->rx);
721 break;
722
723 case PKT_STATUS:
724 if (process_status(card, port, skb) &&
725 net_ratelimit()) {
726 dev_warn(&card->dev->dev, "Bad status packet of %d bytes on port %d:\n", skb->len, port);
727 print_buffer(skb);
728 }
729 dev_kfree_skb_any(skb);
730 break;
731
732 case PKT_COMMAND:
733 default:
734 if (process_command(card, port, skb))
735 break;
736 spin_lock(&card->cli_queue_lock);
737 if (skb_queue_len(&card->cli_queue[port]) > 10) {
738 if (net_ratelimit())
739 dev_warn(&card->dev->dev, "Dropping console response on port %d\n",
740 port);
741 dev_kfree_skb_any(skb);
742 } else
743 skb_queue_tail(&card->cli_queue[port], skb);
744 spin_unlock(&card->cli_queue_lock);
745 break;
746 }
747 }
748
749 if (card->using_dma && card->atmdev[port] &&
750 !card->rx_skb[port]) {
751 struct sk_buff *skb = alloc_skb(RX_DMA_SIZE, GFP_ATOMIC);
752 if (skb) {
753 SKB_CB(skb)->dma_addr =
754 pci_map_single(card->dev, skb->data,
755 RX_DMA_SIZE, PCI_DMA_FROMDEVICE);
756 iowrite32(SKB_CB(skb)->dma_addr,
757 card->config_regs + RX_DMA_ADDR(port));
758 card->rx_skb[port] = skb;
759 } else {
760 if (net_ratelimit())
761 dev_warn(&card->dev->dev, "Failed to allocate RX skb");
762
763
764 tasklet_schedule(&card->tlet);
765 }
766 }
767 }
768 if (rx_done)
769 iowrite32(rx_done, card->config_regs + FLAGS_ADDR);
770
771 return;
772}
773
774static struct atm_vcc *find_vcc(struct atm_dev *dev, short vpi, int vci)
775{
776 struct hlist_head *head;
777 struct atm_vcc *vcc = NULL;
778 struct hlist_node *node;
779 struct sock *s;
780
781 read_lock(&vcc_sklist_lock);
782 head = &vcc_hash[vci & (VCC_HTABLE_SIZE -1)];
783 sk_for_each(s, node, head) {
784 vcc = atm_sk(s);
785 if (vcc->dev == dev && vcc->vci == vci &&
786 vcc->vpi == vpi && vcc->qos.rxtp.traffic_class != ATM_NONE &&
787 test_bit(ATM_VF_READY, &vcc->flags))
788 goto out;
789 }
790 vcc = NULL;
791 out:
792 read_unlock(&vcc_sklist_lock);
793 return vcc;
794}
795
796static int list_vccs(int vci)
797{
798 struct hlist_head *head;
799 struct atm_vcc *vcc;
800 struct hlist_node *node;
801 struct sock *s;
802 int num_found = 0;
803 int i;
804
805 read_lock(&vcc_sklist_lock);
806 if (vci != 0){
807 head = &vcc_hash[vci & (VCC_HTABLE_SIZE -1)];
808 sk_for_each(s, node, head) {
809 num_found ++;
810 vcc = atm_sk(s);
811 printk(KERN_DEBUG "Device: %d Vpi: %d Vci: %d\n",
812 vcc->dev->number,
813 vcc->vpi,
814 vcc->vci);
815 }
816 } else {
817 for(i = 0; i < VCC_HTABLE_SIZE; i++){
818 head = &vcc_hash[i];
819 sk_for_each(s, node, head) {
820 num_found ++;
821 vcc = atm_sk(s);
822 printk(KERN_DEBUG "Device: %d Vpi: %d Vci: %d\n",
823 vcc->dev->number,
824 vcc->vpi,
825 vcc->vci);
826 }
827 }
828 }
829 read_unlock(&vcc_sklist_lock);
830 return num_found;
831}
832
833static void release_vccs(struct atm_dev *dev)
834{
835 int i;
836
837 write_lock_irq(&vcc_sklist_lock);
838 for (i = 0; i < VCC_HTABLE_SIZE; i++) {
839 struct hlist_head *head = &vcc_hash[i];
840 struct hlist_node *node, *tmp;
841 struct sock *s;
842 struct atm_vcc *vcc;
843
844 sk_for_each_safe(s, node, tmp, head) {
845 vcc = atm_sk(s);
846 if (vcc->dev == dev) {
847 vcc_release_async(vcc, -EPIPE);
848 sk_del_node_init(s);
849 }
850 }
851 }
852 write_unlock_irq(&vcc_sklist_lock);
853}
854
855
856static int popen(struct atm_vcc *vcc)
857{
858 struct solos_card *card = vcc->dev->dev_data;
859 struct sk_buff *skb;
860 struct pkt_hdr *header;
861
862 if (vcc->qos.aal != ATM_AAL5) {
863 dev_warn(&card->dev->dev, "Unsupported ATM type %d\n",
864 vcc->qos.aal);
865 return -EINVAL;
866 }
867
868 skb = alloc_skb(sizeof(*header), GFP_ATOMIC);
869 if (!skb) {
870 if (net_ratelimit())
871 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in popen()\n");
872 return -ENOMEM;
873 }
874 header = (void *)skb_put(skb, sizeof(*header));
875
876 header->size = cpu_to_le16(0);
877 header->vpi = cpu_to_le16(vcc->vpi);
878 header->vci = cpu_to_le16(vcc->vci);
879 header->type = cpu_to_le16(PKT_POPEN);
880
881 fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, NULL);
882
883 set_bit(ATM_VF_ADDR, &vcc->flags);
884 set_bit(ATM_VF_READY, &vcc->flags);
885 list_vccs(0);
886
887
888 return 0;
889}
890
891static void pclose(struct atm_vcc *vcc)
892{
893 struct solos_card *card = vcc->dev->dev_data;
894 struct sk_buff *skb;
895 struct pkt_hdr *header;
896
897 skb = alloc_skb(sizeof(*header), GFP_ATOMIC);
898 if (!skb) {
899 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in pclose()\n");
900 return;
901 }
902 header = (void *)skb_put(skb, sizeof(*header));
903
904 header->size = cpu_to_le16(0);
905 header->vpi = cpu_to_le16(vcc->vpi);
906 header->vci = cpu_to_le16(vcc->vci);
907 header->type = cpu_to_le16(PKT_PCLOSE);
908
909 fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, NULL);
910
911 clear_bit(ATM_VF_ADDR, &vcc->flags);
912 clear_bit(ATM_VF_READY, &vcc->flags);
913
914
915
916
917 tasklet_unlock_wait(&card->tlet);
918 return;
919}
920
921static int print_buffer(struct sk_buff *buf)
922{
923 int len,i;
924 char msg[500];
925 char item[10];
926
927 len = buf->len;
928 for (i = 0; i < len; i++){
929 if(i % 8 == 0)
930 sprintf(msg, "%02X: ", i);
931
932 sprintf(item,"%02X ",*(buf->data + i));
933 strcat(msg, item);
934 if(i % 8 == 7) {
935 sprintf(item, "\n");
936 strcat(msg, item);
937 printk(KERN_DEBUG "%s", msg);
938 }
939 }
940 if (i % 8 != 0) {
941 sprintf(item, "\n");
942 strcat(msg, item);
943 printk(KERN_DEBUG "%s", msg);
944 }
945 printk(KERN_DEBUG "\n");
946
947 return 0;
948}
949
950static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb,
951 struct atm_vcc *vcc)
952{
953 int old_len;
954 unsigned long flags;
955
956 SKB_CB(skb)->vcc = vcc;
957
958 spin_lock_irqsave(&card->tx_queue_lock, flags);
959 old_len = skb_queue_len(&card->tx_queue[port]);
960 skb_queue_tail(&card->tx_queue[port], skb);
961 if (!old_len)
962 card->tx_mask |= (1 << port);
963 spin_unlock_irqrestore(&card->tx_queue_lock, flags);
964
965
966
967 if (!old_len)
968 fpga_tx(card);
969}
970
971static uint32_t fpga_tx(struct solos_card *card)
972{
973 uint32_t tx_pending, card_flags;
974 uint32_t tx_started = 0;
975 struct sk_buff *skb;
976 struct atm_vcc *vcc;
977 unsigned char port;
978 unsigned long flags;
979
980 spin_lock_irqsave(&card->tx_lock, flags);
981
982 card_flags = ioread32(card->config_regs + FLAGS_ADDR);
983
984
985
986
987
988
989
990 tx_pending = card->tx_mask & ~card_flags;
991
992 for (port = 0; tx_pending; tx_pending >>= 1, port++) {
993 if (tx_pending & 1) {
994 struct sk_buff *oldskb = card->tx_skb[port];
995 if (oldskb)
996 pci_unmap_single(card->dev, SKB_CB(oldskb)->dma_addr,
997 oldskb->len, PCI_DMA_TODEVICE);
998
999 spin_lock(&card->tx_queue_lock);
1000 skb = skb_dequeue(&card->tx_queue[port]);
1001 if (!skb)
1002 card->tx_mask &= ~(1 << port);
1003 spin_unlock(&card->tx_queue_lock);
1004
1005 if (skb && !card->using_dma) {
1006 memcpy_toio(TX_BUF(card, port), skb->data, skb->len);
1007 tx_started |= 1 << port;
1008 oldskb = skb;
1009 } else if (skb && card->using_dma) {
1010 SKB_CB(skb)->dma_addr = pci_map_single(card->dev, skb->data,
1011 skb->len, PCI_DMA_TODEVICE);
1012 iowrite32(SKB_CB(skb)->dma_addr,
1013 card->config_regs + TX_DMA_ADDR(port));
1014 }
1015
1016 if (!oldskb)
1017 continue;
1018
1019
1020 if (atmdebug) {
1021 dev_info(&card->dev->dev, "Transmitted: port %d\n",
1022 port);
1023 print_buffer(oldskb);
1024 }
1025
1026 vcc = SKB_CB(oldskb)->vcc;
1027
1028 if (vcc) {
1029 atomic_inc(&vcc->stats->tx);
1030 solos_pop(vcc, oldskb);
1031 } else
1032 dev_kfree_skb_irq(oldskb);
1033
1034 }
1035 }
1036
1037 if (tx_started)
1038 iowrite32(tx_started, card->config_regs + FLAGS_ADDR);
1039
1040 spin_unlock_irqrestore(&card->tx_lock, flags);
1041 return card_flags;
1042}
1043
1044static int psend(struct atm_vcc *vcc, struct sk_buff *skb)
1045{
1046 struct solos_card *card = vcc->dev->dev_data;
1047 struct pkt_hdr *header;
1048 int pktlen;
1049
1050 pktlen = skb->len;
1051 if (pktlen > (BUF_SIZE - sizeof(*header))) {
1052 dev_warn(&card->dev->dev, "Length of PDU is too large. Dropping PDU.\n");
1053 solos_pop(vcc, skb);
1054 return 0;
1055 }
1056
1057 if (!skb_clone_writable(skb, sizeof(*header))) {
1058 int expand_by = 0;
1059 int ret;
1060
1061 if (skb_headroom(skb) < sizeof(*header))
1062 expand_by = sizeof(*header) - skb_headroom(skb);
1063
1064 ret = pskb_expand_head(skb, expand_by, 0, GFP_ATOMIC);
1065 if (ret) {
1066 dev_warn(&card->dev->dev, "pskb_expand_head failed.\n");
1067 solos_pop(vcc, skb);
1068 return ret;
1069 }
1070 }
1071
1072 header = (void *)skb_push(skb, sizeof(*header));
1073
1074
1075 header->size = cpu_to_le16(pktlen);
1076 header->vpi = cpu_to_le16(vcc->vpi);
1077 header->vci = cpu_to_le16(vcc->vci);
1078 header->type = cpu_to_le16(PKT_DATA);
1079
1080 fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, vcc);
1081
1082 return 0;
1083}
1084
1085static struct atmdev_ops fpga_ops = {
1086 .open = popen,
1087 .close = pclose,
1088 .ioctl = NULL,
1089 .getsockopt = NULL,
1090 .setsockopt = NULL,
1091 .send = psend,
1092 .send_oam = NULL,
1093 .phy_put = NULL,
1094 .phy_get = NULL,
1095 .change_qos = NULL,
1096 .proc_read = NULL,
1097 .owner = THIS_MODULE
1098};
1099
1100static int fpga_probe(struct pci_dev *dev, const struct pci_device_id *id)
1101{
1102 int err;
1103 uint16_t fpga_ver;
1104 uint8_t major_ver, minor_ver;
1105 uint32_t data32;
1106 struct solos_card *card;
1107
1108 card = kzalloc(sizeof(*card), GFP_KERNEL);
1109 if (!card)
1110 return -ENOMEM;
1111
1112 card->dev = dev;
1113 init_waitqueue_head(&card->fw_wq);
1114 init_waitqueue_head(&card->param_wq);
1115
1116 err = pci_enable_device(dev);
1117 if (err) {
1118 dev_warn(&dev->dev, "Failed to enable PCI device\n");
1119 goto out;
1120 }
1121
1122 err = pci_set_dma_mask(dev, DMA_BIT_MASK(32));
1123 if (err) {
1124 dev_warn(&dev->dev, "Failed to set 32-bit DMA mask\n");
1125 goto out;
1126 }
1127
1128 err = pci_request_regions(dev, "solos");
1129 if (err) {
1130 dev_warn(&dev->dev, "Failed to request regions\n");
1131 goto out;
1132 }
1133
1134 card->config_regs = pci_iomap(dev, 0, CONFIG_RAM_SIZE);
1135 if (!card->config_regs) {
1136 dev_warn(&dev->dev, "Failed to ioremap config registers\n");
1137 goto out_release_regions;
1138 }
1139 card->buffers = pci_iomap(dev, 1, DATA_RAM_SIZE);
1140 if (!card->buffers) {
1141 dev_warn(&dev->dev, "Failed to ioremap data buffers\n");
1142 goto out_unmap_config;
1143 }
1144
1145 if (reset) {
1146 iowrite32(1, card->config_regs + FPGA_MODE);
1147 data32 = ioread32(card->config_regs + FPGA_MODE);
1148
1149 iowrite32(0, card->config_regs + FPGA_MODE);
1150 data32 = ioread32(card->config_regs + FPGA_MODE);
1151 }
1152
1153 data32 = ioread32(card->config_regs + FPGA_VER);
1154 fpga_ver = (data32 & 0x0000FFFF);
1155 major_ver = ((data32 & 0xFF000000) >> 24);
1156 minor_ver = ((data32 & 0x00FF0000) >> 16);
1157 card->fpga_version = FPGA_VERSION(major_ver,minor_ver);
1158 if (card->fpga_version > LEGACY_BUFFERS)
1159 card->buffer_size = BUF_SIZE;
1160 else
1161 card->buffer_size = OLD_BUF_SIZE;
1162 dev_info(&dev->dev, "Solos FPGA Version %d.%02d svn-%d\n",
1163 major_ver, minor_ver, fpga_ver);
1164
1165 if (fpga_ver < 37 && (fpga_upgrade || firmware_upgrade ||
1166 db_fpga_upgrade || db_firmware_upgrade)) {
1167 dev_warn(&dev->dev,
1168 "FPGA too old; cannot upgrade flash. Use JTAG.\n");
1169 fpga_upgrade = firmware_upgrade = 0;
1170 db_fpga_upgrade = db_firmware_upgrade = 0;
1171 }
1172
1173 if (card->fpga_version >= DMA_SUPPORTED){
1174 card->using_dma = 1;
1175 } else {
1176 card->using_dma = 0;
1177
1178 iowrite32(0xF0, card->config_regs + FLAGS_ADDR);
1179 }
1180
1181 data32 = ioread32(card->config_regs + PORTS);
1182 card->nr_ports = (data32 & 0x000000FF);
1183
1184 pci_set_drvdata(dev, card);
1185
1186 tasklet_init(&card->tlet, solos_bh, (unsigned long)card);
1187 spin_lock_init(&card->tx_lock);
1188 spin_lock_init(&card->tx_queue_lock);
1189 spin_lock_init(&card->cli_queue_lock);
1190 spin_lock_init(&card->param_queue_lock);
1191 INIT_LIST_HEAD(&card->param_queue);
1192
1193 err = request_irq(dev->irq, solos_irq, IRQF_SHARED,
1194 "solos-pci", card);
1195 if (err) {
1196 dev_dbg(&card->dev->dev, "Failed to request interrupt IRQ: %d\n", dev->irq);
1197 goto out_unmap_both;
1198 }
1199
1200 iowrite32(1, card->config_regs + IRQ_EN_ADDR);
1201
1202 if (fpga_upgrade)
1203 flash_upgrade(card, 0);
1204
1205 if (firmware_upgrade)
1206 flash_upgrade(card, 1);
1207
1208 if (db_fpga_upgrade)
1209 flash_upgrade(card, 2);
1210
1211 if (db_firmware_upgrade)
1212 flash_upgrade(card, 3);
1213
1214 err = atm_init(card, &dev->dev);
1215 if (err)
1216 goto out_free_irq;
1217
1218 return 0;
1219
1220 out_free_irq:
1221 iowrite32(0, card->config_regs + IRQ_EN_ADDR);
1222 free_irq(dev->irq, card);
1223 tasklet_kill(&card->tlet);
1224
1225 out_unmap_both:
1226 pci_set_drvdata(dev, NULL);
1227 pci_iounmap(dev, card->config_regs);
1228 out_unmap_config:
1229 pci_iounmap(dev, card->buffers);
1230 out_release_regions:
1231 pci_release_regions(dev);
1232 out:
1233 kfree(card);
1234 return err;
1235}
1236
1237static int atm_init(struct solos_card *card, struct device *parent)
1238{
1239 int i;
1240
1241 for (i = 0; i < card->nr_ports; i++) {
1242 struct sk_buff *skb;
1243 struct pkt_hdr *header;
1244
1245 skb_queue_head_init(&card->tx_queue[i]);
1246 skb_queue_head_init(&card->cli_queue[i]);
1247
1248 card->atmdev[i] = atm_dev_register("solos-pci", parent, &fpga_ops, -1, NULL);
1249 if (!card->atmdev[i]) {
1250 dev_err(&card->dev->dev, "Could not register ATM device %d\n", i);
1251 atm_remove(card);
1252 return -ENODEV;
1253 }
1254 if (device_create_file(&card->atmdev[i]->class_dev, &dev_attr_console))
1255 dev_err(&card->dev->dev, "Could not register console for ATM device %d\n", i);
1256 if (sysfs_create_group(&card->atmdev[i]->class_dev.kobj, &solos_attr_group))
1257 dev_err(&card->dev->dev, "Could not register parameter group for ATM device %d\n", i);
1258
1259 dev_info(&card->dev->dev, "Registered ATM device %d\n", card->atmdev[i]->number);
1260
1261 card->atmdev[i]->ci_range.vpi_bits = 8;
1262 card->atmdev[i]->ci_range.vci_bits = 16;
1263 card->atmdev[i]->dev_data = card;
1264 card->atmdev[i]->phy_data = (void *)(unsigned long)i;
1265 atm_dev_signal_change(card->atmdev[i], ATM_PHY_SIG_UNKNOWN);
1266
1267 skb = alloc_skb(sizeof(*header), GFP_ATOMIC);
1268 if (!skb) {
1269 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in atm_init()\n");
1270 continue;
1271 }
1272
1273 header = (void *)skb_put(skb, sizeof(*header));
1274
1275 header->size = cpu_to_le16(0);
1276 header->vpi = cpu_to_le16(0);
1277 header->vci = cpu_to_le16(0);
1278 header->type = cpu_to_le16(PKT_STATUS);
1279
1280 fpga_queue(card, i, skb, NULL);
1281 }
1282 return 0;
1283}
1284
1285static void atm_remove(struct solos_card *card)
1286{
1287 int i;
1288
1289 for (i = 0; i < card->nr_ports; i++) {
1290 if (card->atmdev[i]) {
1291 struct sk_buff *skb;
1292
1293 dev_info(&card->dev->dev, "Unregistering ATM device %d\n", card->atmdev[i]->number);
1294
1295 sysfs_remove_group(&card->atmdev[i]->class_dev.kobj, &solos_attr_group);
1296 atm_dev_deregister(card->atmdev[i]);
1297
1298 skb = card->rx_skb[i];
1299 if (skb) {
1300 pci_unmap_single(card->dev, SKB_CB(skb)->dma_addr,
1301 RX_DMA_SIZE, PCI_DMA_FROMDEVICE);
1302 dev_kfree_skb(skb);
1303 }
1304 skb = card->tx_skb[i];
1305 if (skb) {
1306 pci_unmap_single(card->dev, SKB_CB(skb)->dma_addr,
1307 skb->len, PCI_DMA_TODEVICE);
1308 dev_kfree_skb(skb);
1309 }
1310 while ((skb = skb_dequeue(&card->tx_queue[i])))
1311 dev_kfree_skb(skb);
1312
1313 }
1314 }
1315}
1316
1317static void fpga_remove(struct pci_dev *dev)
1318{
1319 struct solos_card *card = pci_get_drvdata(dev);
1320
1321
1322 iowrite32(0, card->config_regs + IRQ_EN_ADDR);
1323
1324
1325 iowrite32(1, card->config_regs + FPGA_MODE);
1326 (void)ioread32(card->config_regs + FPGA_MODE);
1327
1328 atm_remove(card);
1329
1330 free_irq(dev->irq, card);
1331 tasklet_kill(&card->tlet);
1332
1333
1334 iowrite32(0, card->config_regs + FPGA_MODE);
1335 (void)ioread32(card->config_regs + FPGA_MODE);
1336
1337 pci_iounmap(dev, card->buffers);
1338 pci_iounmap(dev, card->config_regs);
1339
1340 pci_release_regions(dev);
1341 pci_disable_device(dev);
1342
1343 pci_set_drvdata(dev, NULL);
1344 kfree(card);
1345}
1346
1347static struct pci_device_id fpga_pci_tbl[] __devinitdata = {
1348 { 0x10ee, 0x0300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
1349 { 0, }
1350};
1351
1352MODULE_DEVICE_TABLE(pci,fpga_pci_tbl);
1353
1354static struct pci_driver fpga_driver = {
1355 .name = "solos",
1356 .id_table = fpga_pci_tbl,
1357 .probe = fpga_probe,
1358 .remove = fpga_remove,
1359};
1360
1361
1362static int __init solos_pci_init(void)
1363{
1364 printk(KERN_INFO "Solos PCI Driver Version %s\n", VERSION);
1365 return pci_register_driver(&fpga_driver);
1366}
1367
1368static void __exit solos_pci_exit(void)
1369{
1370 pci_unregister_driver(&fpga_driver);
1371 printk(KERN_INFO "Solos PCI Driver %s Unloaded\n", VERSION);
1372}
1373
1374module_init(solos_pci_init);
1375module_exit(solos_pci_exit);
1376
