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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Driver for the Solos PCI ADSL2+ card, designed to support Linux by
4 * Traverse Technologies -- https://www.traverse.com.au/
5 * Xrio Limited -- http://www.xrio.com/
6 *
7 * Copyright © 2008 Traverse Technologies
8 * Copyright © 2008 Intel Corporation
9 *
10 * Authors: Nathan Williams <nathan@traverse.com.au>
11 * David Woodhouse <dwmw2@infradead.org>
12 * Treker Chen <treker@xrio.com>
13 */
14
15#define DEBUG
16#define VERBOSE_DEBUG
17
18#include <linux/interrupt.h>
19#include <linux/module.h>
20#include <linux/kernel.h>
21#include <linux/errno.h>
22#include <linux/ioport.h>
23#include <linux/types.h>
24#include <linux/pci.h>
25#include <linux/atm.h>
26#include <linux/atmdev.h>
27#include <linux/skbuff.h>
28#include <linux/sysfs.h>
29#include <linux/device.h>
30#include <linux/kobject.h>
31#include <linux/firmware.h>
32#include <linux/ctype.h>
33#include <linux/swab.h>
34#include <linux/slab.h>
35
36#define VERSION "1.04"
37#define DRIVER_VERSION 0x01
38#define PTAG "solos-pci"
39
40#define CONFIG_RAM_SIZE 128
41#define FLAGS_ADDR 0x7C
42#define IRQ_EN_ADDR 0x78
43#define FPGA_VER 0x74
44#define IRQ_CLEAR 0x70
45#define WRITE_FLASH 0x6C
46#define PORTS 0x68
47#define FLASH_BLOCK 0x64
48#define FLASH_BUSY 0x60
49#define FPGA_MODE 0x5C
50#define FLASH_MODE 0x58
51#define GPIO_STATUS 0x54
52#define DRIVER_VER 0x50
53#define TX_DMA_ADDR(port) (0x40 + (4 * (port)))
54#define RX_DMA_ADDR(port) (0x30 + (4 * (port)))
55
56#define DATA_RAM_SIZE 32768
57#define BUF_SIZE 2048
58#define OLD_BUF_SIZE 4096 /* For FPGA versions <= 2*/
59/* Old boards use ATMEL AD45DB161D flash */
60#define ATMEL_FPGA_PAGE 528 /* FPGA flash page size*/
61#define ATMEL_SOLOS_PAGE 512 /* Solos flash page size*/
62#define ATMEL_FPGA_BLOCK (ATMEL_FPGA_PAGE * 8) /* FPGA block size*/
63#define ATMEL_SOLOS_BLOCK (ATMEL_SOLOS_PAGE * 8) /* Solos block size*/
64/* Current boards use M25P/M25PE SPI flash */
65#define SPI_FLASH_BLOCK (256 * 64)
66
67#define RX_BUF(card, nr) ((card->buffers) + (nr)*(card->buffer_size)*2)
68#define TX_BUF(card, nr) ((card->buffers) + (nr)*(card->buffer_size)*2 + (card->buffer_size))
69#define FLASH_BUF ((card->buffers) + 4*(card->buffer_size)*2)
70
71#define RX_DMA_SIZE 2048
72
73#define FPGA_VERSION(a,b) (((a) << 8) + (b))
74#define LEGACY_BUFFERS 2
75#define DMA_SUPPORTED 4
76
77static int reset = 0;
78static int atmdebug = 0;
79static int firmware_upgrade = 0;
80static int fpga_upgrade = 0;
81static int db_firmware_upgrade = 0;
82static int db_fpga_upgrade = 0;
83
84struct pkt_hdr {
85 __le16 size;
86 __le16 vpi;
87 __le16 vci;
88 __le16 type;
89};
90
91struct solos_skb_cb {
92 struct atm_vcc *vcc;
93 uint32_t dma_addr;
94};
95
96
97#define SKB_CB(skb) ((struct solos_skb_cb *)skb->cb)
98
99#define PKT_DATA 0
100#define PKT_COMMAND 1
101#define PKT_POPEN 3
102#define PKT_PCLOSE 4
103#define PKT_STATUS 5
104
105struct solos_card {
106 void __iomem *config_regs;
107 void __iomem *buffers;
108 int nr_ports;
109 int tx_mask;
110 struct pci_dev *dev;
111 struct atm_dev *atmdev[4];
112 struct tasklet_struct tlet;
113 spinlock_t tx_lock;
114 spinlock_t tx_queue_lock;
115 spinlock_t cli_queue_lock;
116 spinlock_t param_queue_lock;
117 struct list_head param_queue;
118 struct sk_buff_head tx_queue[4];
119 struct sk_buff_head cli_queue[4];
120 struct sk_buff *tx_skb[4];
121 struct sk_buff *rx_skb[4];
122 unsigned char *dma_bounce;
123 wait_queue_head_t param_wq;
124 wait_queue_head_t fw_wq;
125 int using_dma;
126 int dma_alignment;
127 int fpga_version;
128 int buffer_size;
129 int atmel_flash;
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 atm_init(struct solos_card *, struct device *);
168static void atm_remove(struct solos_card *);
169static int send_command(struct solos_card *card, int dev, const char *buf, size_t size);
170static void solos_bh(unsigned long);
171static int print_buffer(struct sk_buff *buf);
172
173static inline void solos_pop(struct atm_vcc *vcc, struct sk_buff *skb)
174{
175 if (vcc->pop)
176 vcc->pop(vcc, skb);
177 else
178 dev_kfree_skb_any(skb);
179}
180
181static ssize_t solos_param_show(struct device *dev, struct device_attribute *attr,
182 char *buf)
183{
184 struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
185 struct solos_card *card = atmdev->dev_data;
186 struct solos_param prm;
187 struct sk_buff *skb;
188 struct pkt_hdr *header;
189 int buflen;
190
191 buflen = strlen(attr->attr.name) + 10;
192
193 skb = alloc_skb(sizeof(*header) + buflen, GFP_KERNEL);
194 if (!skb) {
195 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in solos_param_show()\n");
196 return -ENOMEM;
197 }
198
199 header = skb_put(skb, sizeof(*header));
200
201 buflen = snprintf((void *)&header[1], buflen - 1,
202 "L%05d\n%s\n", current->pid, attr->attr.name);
203 skb_put(skb, buflen);
204
205 header->size = cpu_to_le16(buflen);
206 header->vpi = cpu_to_le16(0);
207 header->vci = cpu_to_le16(0);
208 header->type = cpu_to_le16(PKT_COMMAND);
209
210 prm.pid = current->pid;
211 prm.response = NULL;
212 prm.port = SOLOS_CHAN(atmdev);
213
214 spin_lock_irq(&card->param_queue_lock);
215 list_add(&prm.list, &card->param_queue);
216 spin_unlock_irq(&card->param_queue_lock);
217
218 fpga_queue(card, prm.port, skb, NULL);
219
220 wait_event_timeout(card->param_wq, prm.response, 5 * HZ);
221
222 spin_lock_irq(&card->param_queue_lock);
223 list_del(&prm.list);
224 spin_unlock_irq(&card->param_queue_lock);
225
226 if (!prm.response)
227 return -EIO;
228
229 buflen = prm.response->len;
230 memcpy(buf, prm.response->data, buflen);
231 kfree_skb(prm.response);
232
233 return buflen;
234}
235
236static ssize_t solos_param_store(struct device *dev, struct device_attribute *attr,
237 const char *buf, size_t count)
238{
239 struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
240 struct solos_card *card = atmdev->dev_data;
241 struct solos_param prm;
242 struct sk_buff *skb;
243 struct pkt_hdr *header;
244 int buflen;
245 ssize_t ret;
246
247 buflen = strlen(attr->attr.name) + 11 + count;
248
249 skb = alloc_skb(sizeof(*header) + buflen, GFP_KERNEL);
250 if (!skb) {
251 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in solos_param_store()\n");
252 return -ENOMEM;
253 }
254
255 header = skb_put(skb, sizeof(*header));
256
257 buflen = snprintf((void *)&header[1], buflen - 1,
258 "L%05d\n%s\n%s\n", current->pid, attr->attr.name, buf);
259
260 skb_put(skb, buflen);
261 header->size = cpu_to_le16(buflen);
262 header->vpi = cpu_to_le16(0);
263 header->vci = cpu_to_le16(0);
264 header->type = cpu_to_le16(PKT_COMMAND);
265
266 prm.pid = current->pid;
267 prm.response = NULL;
268 prm.port = SOLOS_CHAN(atmdev);
269
270 spin_lock_irq(&card->param_queue_lock);
271 list_add(&prm.list, &card->param_queue);
272 spin_unlock_irq(&card->param_queue_lock);
273
274 fpga_queue(card, prm.port, skb, NULL);
275
276 wait_event_timeout(card->param_wq, prm.response, 5 * HZ);
277
278 spin_lock_irq(&card->param_queue_lock);
279 list_del(&prm.list);
280 spin_unlock_irq(&card->param_queue_lock);
281
282 skb = prm.response;
283
284 if (!skb)
285 return -EIO;
286
287 buflen = skb->len;
288
289 /* Sometimes it has a newline, sometimes it doesn't. */
290 if (skb->data[buflen - 1] == '\n')
291 buflen--;
292
293 if (buflen == 2 && !strncmp(skb->data, "OK", 2))
294 ret = count;
295 else if (buflen == 5 && !strncmp(skb->data, "ERROR", 5))
296 ret = -EIO;
297 else {
298 /* We know we have enough space allocated for this; we allocated
299 it ourselves */
300 skb->data[buflen] = 0;
301
302 dev_warn(&card->dev->dev, "Unexpected parameter response: '%s'\n",
303 skb->data);
304 ret = -EIO;
305 }
306 kfree_skb(skb);
307
308 return ret;
309}
310
311static char *next_string(struct sk_buff *skb)
312{
313 int i = 0;
314 char *this = skb->data;
315
316 for (i = 0; i < skb->len; i++) {
317 if (this[i] == '\n') {
318 this[i] = 0;
319 skb_pull(skb, i + 1);
320 return this;
321 }
322 if (!isprint(this[i]))
323 return NULL;
324 }
325 return NULL;
326}
327
328/*
329 * Status packet has fields separated by \n, starting with a version number
330 * for the information therein. Fields are....
331 *
332 * packet version
333 * RxBitRate (version >= 1)
334 * TxBitRate (version >= 1)
335 * State (version >= 1)
336 * LocalSNRMargin (version >= 1)
337 * LocalLineAttn (version >= 1)
338 */
339static int process_status(struct solos_card *card, int port, struct sk_buff *skb)
340{
341 char *str, *state_str, *snr, *attn;
342 int ver, rate_up, rate_down, err;
343
344 if (!card->atmdev[port])
345 return -ENODEV;
346
347 str = next_string(skb);
348 if (!str)
349 return -EIO;
350
351 err = kstrtoint(str, 10, &ver);
352 if (err) {
353 dev_warn(&card->dev->dev, "Unexpected status interrupt version\n");
354 return err;
355 }
356 if (ver < 1) {
357 dev_warn(&card->dev->dev, "Unexpected status interrupt version %d\n",
358 ver);
359 return -EIO;
360 }
361
362 str = next_string(skb);
363 if (!str)
364 return -EIO;
365 if (!strcmp(str, "ERROR")) {
366 dev_dbg(&card->dev->dev, "Status packet indicated Solos error on port %d (starting up?)\n",
367 port);
368 return 0;
369 }
370
371 err = kstrtoint(str, 10, &rate_down);
372 if (err)
373 return err;
374
375 str = next_string(skb);
376 if (!str)
377 return -EIO;
378 err = kstrtoint(str, 10, &rate_up);
379 if (err)
380 return err;
381
382 state_str = next_string(skb);
383 if (!state_str)
384 return -EIO;
385
386 /* Anything but 'Showtime' is down */
387 if (strcmp(state_str, "Showtime")) {
388 atm_dev_signal_change(card->atmdev[port], ATM_PHY_SIG_LOST);
389 dev_info(&card->dev->dev, "Port %d: %s\n", port, state_str);
390 return 0;
391 }
392
393 snr = next_string(skb);
394 if (!snr)
395 return -EIO;
396 attn = next_string(skb);
397 if (!attn)
398 return -EIO;
399
400 dev_info(&card->dev->dev, "Port %d: %s @%d/%d kb/s%s%s%s%s\n",
401 port, state_str, rate_down/1000, rate_up/1000,
402 snr[0]?", SNR ":"", snr, attn[0]?", Attn ":"", attn);
403
404 card->atmdev[port]->link_rate = rate_down / 424;
405 atm_dev_signal_change(card->atmdev[port], ATM_PHY_SIG_FOUND);
406
407 return 0;
408}
409
410static int process_command(struct solos_card *card, int port, struct sk_buff *skb)
411{
412 struct solos_param *prm;
413 unsigned long flags;
414 int cmdpid;
415 int found = 0, err;
416
417 if (skb->len < 7)
418 return 0;
419
420 if (skb->data[0] != 'L' || !isdigit(skb->data[1]) ||
421 !isdigit(skb->data[2]) || !isdigit(skb->data[3]) ||
422 !isdigit(skb->data[4]) || !isdigit(skb->data[5]) ||
423 skb->data[6] != '\n')
424 return 0;
425
426 err = kstrtoint(&skb->data[1], 10, &cmdpid);
427 if (err)
428 return err;
429
430 spin_lock_irqsave(&card->param_queue_lock, flags);
431 list_for_each_entry(prm, &card->param_queue, list) {
432 if (prm->port == port && prm->pid == cmdpid) {
433 prm->response = skb;
434 skb_pull(skb, 7);
435 wake_up(&card->param_wq);
436 found = 1;
437 break;
438 }
439 }
440 spin_unlock_irqrestore(&card->param_queue_lock, flags);
441 return found;
442}
443
444static ssize_t console_show(struct device *dev, struct device_attribute *attr,
445 char *buf)
446{
447 struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
448 struct solos_card *card = atmdev->dev_data;
449 struct sk_buff *skb;
450 unsigned int len;
451
452 spin_lock_bh(&card->cli_queue_lock);
453 skb = skb_dequeue(&card->cli_queue[SOLOS_CHAN(atmdev)]);
454 spin_unlock_bh(&card->cli_queue_lock);
455 if(skb == NULL)
456 return sprintf(buf, "No data.\n");
457
458 len = skb->len;
459 memcpy(buf, skb->data, len);
460
461 kfree_skb(skb);
462 return len;
463}
464
465static int send_command(struct solos_card *card, int dev, const char *buf, size_t size)
466{
467 struct sk_buff *skb;
468 struct pkt_hdr *header;
469
470 if (size > (BUF_SIZE - sizeof(*header))) {
471 dev_dbg(&card->dev->dev, "Command is too big. Dropping request\n");
472 return 0;
473 }
474 skb = alloc_skb(size + sizeof(*header), GFP_ATOMIC);
475 if (!skb) {
476 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in send_command()\n");
477 return 0;
478 }
479
480 header = skb_put(skb, sizeof(*header));
481
482 header->size = cpu_to_le16(size);
483 header->vpi = cpu_to_le16(0);
484 header->vci = cpu_to_le16(0);
485 header->type = cpu_to_le16(PKT_COMMAND);
486
487 skb_put_data(skb, buf, size);
488
489 fpga_queue(card, dev, skb, NULL);
490
491 return 0;
492}
493
494static ssize_t console_store(struct device *dev, struct device_attribute *attr,
495 const char *buf, size_t count)
496{
497 struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
498 struct solos_card *card = atmdev->dev_data;
499 int err;
500
501 err = send_command(card, SOLOS_CHAN(atmdev), buf, count);
502
503 return err?:count;
504}
505
506struct geos_gpio_attr {
507 struct device_attribute attr;
508 int offset;
509};
510
511#define SOLOS_GPIO_ATTR(_name, _mode, _show, _store, _offset) \
512 struct geos_gpio_attr gpio_attr_##_name = { \
513 .attr = __ATTR(_name, _mode, _show, _store), \
514 .offset = _offset }
515
516static ssize_t geos_gpio_store(struct device *dev, struct device_attribute *attr,
517 const char *buf, size_t count)
518{
519 struct geos_gpio_attr *gattr = container_of(attr, struct geos_gpio_attr, attr);
520 struct solos_card *card = dev_get_drvdata(dev);
521 uint32_t data32;
522
523 if (count != 1 && (count != 2 || buf[1] != '\n'))
524 return -EINVAL;
525
526 spin_lock_irq(&card->param_queue_lock);
527 data32 = ioread32(card->config_regs + GPIO_STATUS);
528 if (buf[0] == '1') {
529 data32 |= 1 << gattr->offset;
530 iowrite32(data32, card->config_regs + GPIO_STATUS);
531 } else if (buf[0] == '0') {
532 data32 &= ~(1 << gattr->offset);
533 iowrite32(data32, card->config_regs + GPIO_STATUS);
534 } else {
535 count = -EINVAL;
536 }
537 spin_unlock_irq(&card->param_queue_lock);
538 return count;
539}
540
541static ssize_t geos_gpio_show(struct device *dev, struct device_attribute *attr,
542 char *buf)
543{
544 struct geos_gpio_attr *gattr = container_of(attr, struct geos_gpio_attr, attr);
545 struct solos_card *card = dev_get_drvdata(dev);
546 uint32_t data32;
547
548 data32 = ioread32(card->config_regs + GPIO_STATUS);
549 data32 = (data32 >> gattr->offset) & 1;
550
551 return sprintf(buf, "%d\n", data32);
552}
553
554static ssize_t hardware_show(struct device *dev, struct device_attribute *attr,
555 char *buf)
556{
557 struct geos_gpio_attr *gattr = container_of(attr, struct geos_gpio_attr, attr);
558 struct solos_card *card = dev_get_drvdata(dev);
559 uint32_t data32;
560
561 data32 = ioread32(card->config_regs + GPIO_STATUS);
562 switch (gattr->offset) {
563 case 0:
564 /* HardwareVersion */
565 data32 = data32 & 0x1F;
566 break;
567 case 1:
568 /* HardwareVariant */
569 data32 = (data32 >> 5) & 0x0F;
570 break;
571 }
572 return sprintf(buf, "%d\n", data32);
573}
574
575static DEVICE_ATTR_RW(console);
576
577
578#define SOLOS_ATTR_RO(x) static DEVICE_ATTR(x, 0444, solos_param_show, NULL);
579#define SOLOS_ATTR_RW(x) static DEVICE_ATTR(x, 0644, solos_param_show, solos_param_store);
580
581#include "solos-attrlist.c"
582
583static SOLOS_GPIO_ATTR(GPIO1, 0644, geos_gpio_show, geos_gpio_store, 9);
584static SOLOS_GPIO_ATTR(GPIO2, 0644, geos_gpio_show, geos_gpio_store, 10);
585static SOLOS_GPIO_ATTR(GPIO3, 0644, geos_gpio_show, geos_gpio_store, 11);
586static SOLOS_GPIO_ATTR(GPIO4, 0644, geos_gpio_show, geos_gpio_store, 12);
587static SOLOS_GPIO_ATTR(GPIO5, 0644, geos_gpio_show, geos_gpio_store, 13);
588static SOLOS_GPIO_ATTR(PushButton, 0444, geos_gpio_show, NULL, 14);
589static SOLOS_GPIO_ATTR(HardwareVersion, 0444, hardware_show, NULL, 0);
590static SOLOS_GPIO_ATTR(HardwareVariant, 0444, hardware_show, NULL, 1);
591#undef SOLOS_ATTR_RO
592#undef SOLOS_ATTR_RW
593
594#define SOLOS_ATTR_RO(x) &dev_attr_##x.attr,
595#define SOLOS_ATTR_RW(x) &dev_attr_##x.attr,
596
597static struct attribute *solos_attrs[] = {
598#include "solos-attrlist.c"
599 NULL
600};
601
602static const struct attribute_group solos_attr_group = {
603 .attrs = solos_attrs,
604 .name = "parameters",
605};
606
607static struct attribute *gpio_attrs[] = {
608 &gpio_attr_GPIO1.attr.attr,
609 &gpio_attr_GPIO2.attr.attr,
610 &gpio_attr_GPIO3.attr.attr,
611 &gpio_attr_GPIO4.attr.attr,
612 &gpio_attr_GPIO5.attr.attr,
613 &gpio_attr_PushButton.attr.attr,
614 &gpio_attr_HardwareVersion.attr.attr,
615 &gpio_attr_HardwareVariant.attr.attr,
616 NULL
617};
618
619static const struct attribute_group gpio_attr_group = {
620 .attrs = gpio_attrs,
621 .name = "gpio",
622};
623
624static int flash_upgrade(struct solos_card *card, int chip)
625{
626 const struct firmware *fw;
627 const char *fw_name;
628 int blocksize = 0;
629 int numblocks = 0;
630 int offset;
631
632 switch (chip) {
633 case 0:
634 fw_name = "solos-FPGA.bin";
635 if (card->atmel_flash)
636 blocksize = ATMEL_FPGA_BLOCK;
637 else
638 blocksize = SPI_FLASH_BLOCK;
639 break;
640 case 1:
641 fw_name = "solos-Firmware.bin";
642 if (card->atmel_flash)
643 blocksize = ATMEL_SOLOS_BLOCK;
644 else
645 blocksize = SPI_FLASH_BLOCK;
646 break;
647 case 2:
648 if (card->fpga_version > LEGACY_BUFFERS){
649 fw_name = "solos-db-FPGA.bin";
650 if (card->atmel_flash)
651 blocksize = ATMEL_FPGA_BLOCK;
652 else
653 blocksize = SPI_FLASH_BLOCK;
654 } else {
655 dev_info(&card->dev->dev, "FPGA version doesn't support"
656 " daughter board upgrades\n");
657 return -EPERM;
658 }
659 break;
660 case 3:
661 if (card->fpga_version > LEGACY_BUFFERS){
662 fw_name = "solos-Firmware.bin";
663 if (card->atmel_flash)
664 blocksize = ATMEL_SOLOS_BLOCK;
665 else
666 blocksize = SPI_FLASH_BLOCK;
667 } else {
668 dev_info(&card->dev->dev, "FPGA version doesn't support"
669 " daughter board upgrades\n");
670 return -EPERM;
671 }
672 break;
673 default:
674 return -ENODEV;
675 }
676
677 if (request_firmware(&fw, fw_name, &card->dev->dev))
678 return -ENOENT;
679
680 dev_info(&card->dev->dev, "Flash upgrade starting\n");
681
682 /* New FPGAs require driver version before permitting flash upgrades */
683 iowrite32(DRIVER_VERSION, card->config_regs + DRIVER_VER);
684
685 numblocks = fw->size / blocksize;
686 dev_info(&card->dev->dev, "Firmware size: %zd\n", fw->size);
687 dev_info(&card->dev->dev, "Number of blocks: %d\n", numblocks);
688
689 dev_info(&card->dev->dev, "Changing FPGA to Update mode\n");
690 iowrite32(1, card->config_regs + FPGA_MODE);
691 (void) ioread32(card->config_regs + FPGA_MODE);
692
693 /* Set mode to Chip Erase */
694 if(chip == 0 || chip == 2)
695 dev_info(&card->dev->dev, "Set FPGA Flash mode to FPGA Chip Erase\n");
696 if(chip == 1 || chip == 3)
697 dev_info(&card->dev->dev, "Set FPGA Flash mode to Solos Chip Erase\n");
698 iowrite32((chip * 2), card->config_regs + FLASH_MODE);
699
700
701 iowrite32(1, card->config_regs + WRITE_FLASH);
702 wait_event(card->fw_wq, !ioread32(card->config_regs + FLASH_BUSY));
703
704 for (offset = 0; offset < fw->size; offset += blocksize) {
705 int i;
706
707 /* Clear write flag */
708 iowrite32(0, card->config_regs + WRITE_FLASH);
709
710 /* Set mode to Block Write */
711 /* dev_info(&card->dev->dev, "Set FPGA Flash mode to Block Write\n"); */
712 iowrite32(((chip * 2) + 1), card->config_regs + FLASH_MODE);
713
714 /* Copy block to buffer, swapping each 16 bits for Atmel flash */
715 for(i = 0; i < blocksize; i += 4) {
716 uint32_t word;
717 if (card->atmel_flash)
718 word = swahb32p((uint32_t *)(fw->data + offset + i));
719 else
720 word = *(uint32_t *)(fw->data + offset + i);
721 if(card->fpga_version > LEGACY_BUFFERS)
722 iowrite32(word, FLASH_BUF + i);
723 else
724 iowrite32(word, RX_BUF(card, 3) + i);
725 }
726
727 /* Specify block number and then trigger flash write */
728 iowrite32(offset / blocksize, card->config_regs + FLASH_BLOCK);
729 iowrite32(1, card->config_regs + WRITE_FLASH);
730 wait_event(card->fw_wq, !ioread32(card->config_regs + FLASH_BUSY));
731 }
732
733 release_firmware(fw);
734 iowrite32(0, card->config_regs + WRITE_FLASH);
735 iowrite32(0, card->config_regs + FPGA_MODE);
736 iowrite32(0, card->config_regs + FLASH_MODE);
737 dev_info(&card->dev->dev, "Returning FPGA to Data mode\n");
738 return 0;
739}
740
741static irqreturn_t solos_irq(int irq, void *dev_id)
742{
743 struct solos_card *card = dev_id;
744 int handled = 1;
745
746 iowrite32(0, card->config_regs + IRQ_CLEAR);
747
748 /* If we're up and running, just kick the tasklet to process TX/RX */
749 if (card->atmdev[0])
750 tasklet_schedule(&card->tlet);
751 else
752 wake_up(&card->fw_wq);
753
754 return IRQ_RETVAL(handled);
755}
756
757static void solos_bh(unsigned long card_arg)
758{
759 struct solos_card *card = (void *)card_arg;
760 uint32_t card_flags;
761 uint32_t rx_done = 0;
762 int port;
763
764 /*
765 * Since fpga_tx() is going to need to read the flags under its lock,
766 * it can return them to us so that we don't have to hit PCI MMIO
767 * again for the same information
768 */
769 card_flags = fpga_tx(card);
770
771 for (port = 0; port < card->nr_ports; port++) {
772 if (card_flags & (0x10 << port)) {
773 struct pkt_hdr _hdr, *header;
774 struct sk_buff *skb;
775 struct atm_vcc *vcc;
776 int size;
777
778 if (card->using_dma) {
779 skb = card->rx_skb[port];
780 card->rx_skb[port] = NULL;
781
782 dma_unmap_single(&card->dev->dev, SKB_CB(skb)->dma_addr,
783 RX_DMA_SIZE, DMA_FROM_DEVICE);
784
785 header = (void *)skb->data;
786 size = le16_to_cpu(header->size);
787 skb_put(skb, size + sizeof(*header));
788 skb_pull(skb, sizeof(*header));
789 } else {
790 header = &_hdr;
791
792 rx_done |= 0x10 << port;
793
794 memcpy_fromio(header, RX_BUF(card, port), sizeof(*header));
795
796 size = le16_to_cpu(header->size);
797 if (size > (card->buffer_size - sizeof(*header))){
798 dev_warn(&card->dev->dev, "Invalid buffer size\n");
799 continue;
800 }
801
802 /* Use netdev_alloc_skb() because it adds NET_SKB_PAD of
803 * headroom, and ensures we can route packets back out an
804 * Ethernet interface (for example) without having to
805 * reallocate. Adding NET_IP_ALIGN also ensures that both
806 * PPPoATM and PPPoEoBR2684 packets end up aligned. */
807 skb = netdev_alloc_skb_ip_align(NULL, size + 1);
808 if (!skb) {
809 if (net_ratelimit())
810 dev_warn(&card->dev->dev, "Failed to allocate sk_buff for RX\n");
811 continue;
812 }
813
814 memcpy_fromio(skb_put(skb, size),
815 RX_BUF(card, port) + sizeof(*header),
816 size);
817 }
818 if (atmdebug) {
819 dev_info(&card->dev->dev, "Received: port %d\n", port);
820 dev_info(&card->dev->dev, "size: %d VPI: %d VCI: %d\n",
821 size, le16_to_cpu(header->vpi),
822 le16_to_cpu(header->vci));
823 print_buffer(skb);
824 }
825
826 switch (le16_to_cpu(header->type)) {
827 case PKT_DATA:
828 vcc = find_vcc(card->atmdev[port], le16_to_cpu(header->vpi),
829 le16_to_cpu(header->vci));
830 if (!vcc) {
831 if (net_ratelimit())
832 dev_warn(&card->dev->dev, "Received packet for unknown VPI.VCI %d.%d on port %d\n",
833 le16_to_cpu(header->vpi), le16_to_cpu(header->vci),
834 port);
835 dev_kfree_skb_any(skb);
836 break;
837 }
838 atm_charge(vcc, skb->truesize);
839 vcc->push(vcc, skb);
840 atomic_inc(&vcc->stats->rx);
841 break;
842
843 case PKT_STATUS:
844 if (process_status(card, port, skb) &&
845 net_ratelimit()) {
846 dev_warn(&card->dev->dev, "Bad status packet of %d bytes on port %d:\n", skb->len, port);
847 print_buffer(skb);
848 }
849 dev_kfree_skb_any(skb);
850 break;
851
852 case PKT_COMMAND:
853 default: /* FIXME: Not really, surely? */
854 if (process_command(card, port, skb))
855 break;
856 spin_lock(&card->cli_queue_lock);
857 if (skb_queue_len(&card->cli_queue[port]) > 10) {
858 if (net_ratelimit())
859 dev_warn(&card->dev->dev, "Dropping console response on port %d\n",
860 port);
861 dev_kfree_skb_any(skb);
862 } else
863 skb_queue_tail(&card->cli_queue[port], skb);
864 spin_unlock(&card->cli_queue_lock);
865 break;
866 }
867 }
868 /* Allocate RX skbs for any ports which need them */
869 if (card->using_dma && card->atmdev[port] &&
870 !card->rx_skb[port]) {
871 /* Unlike the MMIO case (qv) we can't add NET_IP_ALIGN
872 * here; the FPGA can only DMA to addresses which are
873 * aligned to 4 bytes. */
874 struct sk_buff *skb = dev_alloc_skb(RX_DMA_SIZE);
875 if (skb) {
876 SKB_CB(skb)->dma_addr =
877 dma_map_single(&card->dev->dev, skb->data,
878 RX_DMA_SIZE, DMA_FROM_DEVICE);
879 iowrite32(SKB_CB(skb)->dma_addr,
880 card->config_regs + RX_DMA_ADDR(port));
881 card->rx_skb[port] = skb;
882 } else {
883 if (net_ratelimit())
884 dev_warn(&card->dev->dev, "Failed to allocate RX skb");
885
886 /* We'll have to try again later */
887 tasklet_schedule(&card->tlet);
888 }
889 }
890 }
891 if (rx_done)
892 iowrite32(rx_done, card->config_regs + FLAGS_ADDR);
893
894 return;
895}
896
897static struct atm_vcc *find_vcc(struct atm_dev *dev, short vpi, int vci)
898{
899 struct hlist_head *head;
900 struct atm_vcc *vcc = NULL;
901 struct sock *s;
902
903 read_lock(&vcc_sklist_lock);
904 head = &vcc_hash[vci & (VCC_HTABLE_SIZE -1)];
905 sk_for_each(s, head) {
906 vcc = atm_sk(s);
907 if (vcc->dev == dev && vcc->vci == vci &&
908 vcc->vpi == vpi && vcc->qos.rxtp.traffic_class != ATM_NONE &&
909 test_bit(ATM_VF_READY, &vcc->flags))
910 goto out;
911 }
912 vcc = NULL;
913 out:
914 read_unlock(&vcc_sklist_lock);
915 return vcc;
916}
917
918static int popen(struct atm_vcc *vcc)
919{
920 struct solos_card *card = vcc->dev->dev_data;
921 struct sk_buff *skb;
922 struct pkt_hdr *header;
923
924 if (vcc->qos.aal != ATM_AAL5) {
925 dev_warn(&card->dev->dev, "Unsupported ATM type %d\n",
926 vcc->qos.aal);
927 return -EINVAL;
928 }
929
930 skb = alloc_skb(sizeof(*header), GFP_KERNEL);
931 if (!skb) {
932 if (net_ratelimit())
933 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in popen()\n");
934 return -ENOMEM;
935 }
936 header = skb_put(skb, sizeof(*header));
937
938 header->size = cpu_to_le16(0);
939 header->vpi = cpu_to_le16(vcc->vpi);
940 header->vci = cpu_to_le16(vcc->vci);
941 header->type = cpu_to_le16(PKT_POPEN);
942
943 fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, NULL);
944
945 set_bit(ATM_VF_ADDR, &vcc->flags);
946 set_bit(ATM_VF_READY, &vcc->flags);
947
948 return 0;
949}
950
951static void pclose(struct atm_vcc *vcc)
952{
953 struct solos_card *card = vcc->dev->dev_data;
954 unsigned char port = SOLOS_CHAN(vcc->dev);
955 struct sk_buff *skb, *tmpskb;
956 struct pkt_hdr *header;
957
958 /* Remove any yet-to-be-transmitted packets from the pending queue */
959 spin_lock_bh(&card->tx_queue_lock);
960 skb_queue_walk_safe(&card->tx_queue[port], skb, tmpskb) {
961 if (SKB_CB(skb)->vcc == vcc) {
962 skb_unlink(skb, &card->tx_queue[port]);
963 solos_pop(vcc, skb);
964 }
965 }
966 spin_unlock_bh(&card->tx_queue_lock);
967
968 skb = alloc_skb(sizeof(*header), GFP_KERNEL);
969 if (!skb) {
970 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in pclose()\n");
971 return;
972 }
973 header = skb_put(skb, sizeof(*header));
974
975 header->size = cpu_to_le16(0);
976 header->vpi = cpu_to_le16(vcc->vpi);
977 header->vci = cpu_to_le16(vcc->vci);
978 header->type = cpu_to_le16(PKT_PCLOSE);
979
980 skb_get(skb);
981 fpga_queue(card, port, skb, NULL);
982
983 if (!wait_event_timeout(card->param_wq, !skb_shared(skb), 5 * HZ))
984 dev_warn(&card->dev->dev,
985 "Timeout waiting for VCC close on port %d\n", port);
986
987 dev_kfree_skb(skb);
988
989 /* Hold up vcc_destroy_socket() (our caller) until solos_bh() in the
990 tasklet has finished processing any incoming packets (and, more to
991 the point, using the vcc pointer). */
992 tasklet_unlock_wait(&card->tlet);
993
994 clear_bit(ATM_VF_ADDR, &vcc->flags);
995
996 return;
997}
998
999static int print_buffer(struct sk_buff *buf)
1000{
1001 int len,i;
1002 char msg[500];
1003 char item[10];
1004
1005 len = buf->len;
1006 for (i = 0; i < len; i++){
1007 if(i % 8 == 0)
1008 sprintf(msg, "%02X: ", i);
1009
1010 sprintf(item,"%02X ",*(buf->data + i));
1011 strcat(msg, item);
1012 if(i % 8 == 7) {
1013 sprintf(item, "\n");
1014 strcat(msg, item);
1015 printk(KERN_DEBUG "%s", msg);
1016 }
1017 }
1018 if (i % 8 != 0) {
1019 sprintf(item, "\n");
1020 strcat(msg, item);
1021 printk(KERN_DEBUG "%s", msg);
1022 }
1023 printk(KERN_DEBUG "\n");
1024
1025 return 0;
1026}
1027
1028static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb,
1029 struct atm_vcc *vcc)
1030{
1031 int old_len;
1032 unsigned long flags;
1033
1034 SKB_CB(skb)->vcc = vcc;
1035
1036 spin_lock_irqsave(&card->tx_queue_lock, flags);
1037 old_len = skb_queue_len(&card->tx_queue[port]);
1038 skb_queue_tail(&card->tx_queue[port], skb);
1039 if (!old_len)
1040 card->tx_mask |= (1 << port);
1041 spin_unlock_irqrestore(&card->tx_queue_lock, flags);
1042
1043 /* Theoretically we could just schedule the tasklet here, but
1044 that introduces latency we don't want -- it's noticeable */
1045 if (!old_len)
1046 fpga_tx(card);
1047}
1048
1049static uint32_t fpga_tx(struct solos_card *card)
1050{
1051 uint32_t tx_pending, card_flags;
1052 uint32_t tx_started = 0;
1053 struct sk_buff *skb;
1054 struct atm_vcc *vcc;
1055 unsigned char port;
1056 unsigned long flags;
1057
1058 spin_lock_irqsave(&card->tx_lock, flags);
1059
1060 card_flags = ioread32(card->config_regs + FLAGS_ADDR);
1061 /*
1062 * The queue lock is required for _writing_ to tx_mask, but we're
1063 * OK to read it here without locking. The only potential update
1064 * that we could race with is in fpga_queue() where it sets a bit
1065 * for a new port... but it's going to call this function again if
1066 * it's doing that, anyway.
1067 */
1068 tx_pending = card->tx_mask & ~card_flags;
1069
1070 for (port = 0; tx_pending; tx_pending >>= 1, port++) {
1071 if (tx_pending & 1) {
1072 struct sk_buff *oldskb = card->tx_skb[port];
1073 if (oldskb) {
1074 dma_unmap_single(&card->dev->dev, SKB_CB(oldskb)->dma_addr,
1075 oldskb->len, DMA_TO_DEVICE);
1076 card->tx_skb[port] = NULL;
1077 }
1078 spin_lock(&card->tx_queue_lock);
1079 skb = skb_dequeue(&card->tx_queue[port]);
1080 if (!skb)
1081 card->tx_mask &= ~(1 << port);
1082 spin_unlock(&card->tx_queue_lock);
1083
1084 if (skb && !card->using_dma) {
1085 memcpy_toio(TX_BUF(card, port), skb->data, skb->len);
1086 tx_started |= 1 << port;
1087 oldskb = skb; /* We're done with this skb already */
1088 } else if (skb && card->using_dma) {
1089 unsigned char *data = skb->data;
1090 if ((unsigned long)data & card->dma_alignment) {
1091 data = card->dma_bounce + (BUF_SIZE * port);
1092 memcpy(data, skb->data, skb->len);
1093 }
1094 SKB_CB(skb)->dma_addr = dma_map_single(&card->dev->dev, data,
1095 skb->len, DMA_TO_DEVICE);
1096 card->tx_skb[port] = skb;
1097 iowrite32(SKB_CB(skb)->dma_addr,
1098 card->config_regs + TX_DMA_ADDR(port));
1099 }
1100
1101 if (!oldskb)
1102 continue;
1103
1104 /* Clean up and free oldskb now it's gone */
1105 if (atmdebug) {
1106 struct pkt_hdr *header = (void *)oldskb->data;
1107 int size = le16_to_cpu(header->size);
1108
1109 skb_pull(oldskb, sizeof(*header));
1110 dev_info(&card->dev->dev, "Transmitted: port %d\n",
1111 port);
1112 dev_info(&card->dev->dev, "size: %d VPI: %d VCI: %d\n",
1113 size, le16_to_cpu(header->vpi),
1114 le16_to_cpu(header->vci));
1115 print_buffer(oldskb);
1116 }
1117
1118 vcc = SKB_CB(oldskb)->vcc;
1119
1120 if (vcc) {
1121 atomic_inc(&vcc->stats->tx);
1122 solos_pop(vcc, oldskb);
1123 } else {
1124 dev_kfree_skb_irq(oldskb);
1125 wake_up(&card->param_wq);
1126 }
1127 }
1128 }
1129 /* For non-DMA TX, write the 'TX start' bit for all four ports simultaneously */
1130 if (tx_started)
1131 iowrite32(tx_started, card->config_regs + FLAGS_ADDR);
1132
1133 spin_unlock_irqrestore(&card->tx_lock, flags);
1134 return card_flags;
1135}
1136
1137static int psend(struct atm_vcc *vcc, struct sk_buff *skb)
1138{
1139 struct solos_card *card = vcc->dev->dev_data;
1140 struct pkt_hdr *header;
1141 int pktlen;
1142
1143 pktlen = skb->len;
1144 if (pktlen > (BUF_SIZE - sizeof(*header))) {
1145 dev_warn(&card->dev->dev, "Length of PDU is too large. Dropping PDU.\n");
1146 solos_pop(vcc, skb);
1147 return 0;
1148 }
1149
1150 if (!skb_clone_writable(skb, sizeof(*header))) {
1151 int expand_by = 0;
1152 int ret;
1153
1154 if (skb_headroom(skb) < sizeof(*header))
1155 expand_by = sizeof(*header) - skb_headroom(skb);
1156
1157 ret = pskb_expand_head(skb, expand_by, 0, GFP_ATOMIC);
1158 if (ret) {
1159 dev_warn(&card->dev->dev, "pskb_expand_head failed.\n");
1160 solos_pop(vcc, skb);
1161 return ret;
1162 }
1163 }
1164
1165 header = skb_push(skb, sizeof(*header));
1166
1167 /* This does _not_ include the size of the header */
1168 header->size = cpu_to_le16(pktlen);
1169 header->vpi = cpu_to_le16(vcc->vpi);
1170 header->vci = cpu_to_le16(vcc->vci);
1171 header->type = cpu_to_le16(PKT_DATA);
1172
1173 fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, vcc);
1174
1175 return 0;
1176}
1177
1178static const struct atmdev_ops fpga_ops = {
1179 .open = popen,
1180 .close = pclose,
1181 .ioctl = NULL,
1182 .send = psend,
1183 .send_oam = NULL,
1184 .phy_put = NULL,
1185 .phy_get = NULL,
1186 .change_qos = NULL,
1187 .proc_read = NULL,
1188 .owner = THIS_MODULE
1189};
1190
1191static int fpga_probe(struct pci_dev *dev, const struct pci_device_id *id)
1192{
1193 int err;
1194 uint16_t fpga_ver;
1195 uint8_t major_ver, minor_ver;
1196 uint32_t data32;
1197 struct solos_card *card;
1198
1199 card = kzalloc(sizeof(*card), GFP_KERNEL);
1200 if (!card)
1201 return -ENOMEM;
1202
1203 card->dev = dev;
1204 init_waitqueue_head(&card->fw_wq);
1205 init_waitqueue_head(&card->param_wq);
1206
1207 err = pci_enable_device(dev);
1208 if (err) {
1209 dev_warn(&dev->dev, "Failed to enable PCI device\n");
1210 goto out;
1211 }
1212
1213 err = dma_set_mask_and_coherent(&dev->dev, DMA_BIT_MASK(32));
1214 if (err) {
1215 dev_warn(&dev->dev, "Failed to set 32-bit DMA mask\n");
1216 goto out;
1217 }
1218
1219 err = pci_request_regions(dev, "solos");
1220 if (err) {
1221 dev_warn(&dev->dev, "Failed to request regions\n");
1222 goto out;
1223 }
1224
1225 card->config_regs = pci_iomap(dev, 0, CONFIG_RAM_SIZE);
1226 if (!card->config_regs) {
1227 dev_warn(&dev->dev, "Failed to ioremap config registers\n");
1228 err = -ENOMEM;
1229 goto out_release_regions;
1230 }
1231 card->buffers = pci_iomap(dev, 1, DATA_RAM_SIZE);
1232 if (!card->buffers) {
1233 dev_warn(&dev->dev, "Failed to ioremap data buffers\n");
1234 err = -ENOMEM;
1235 goto out_unmap_config;
1236 }
1237
1238 if (reset) {
1239 iowrite32(1, card->config_regs + FPGA_MODE);
1240 ioread32(card->config_regs + FPGA_MODE);
1241
1242 iowrite32(0, card->config_regs + FPGA_MODE);
1243 ioread32(card->config_regs + FPGA_MODE);
1244 }
1245
1246 data32 = ioread32(card->config_regs + FPGA_VER);
1247 fpga_ver = (data32 & 0x0000FFFF);
1248 major_ver = ((data32 & 0xFF000000) >> 24);
1249 minor_ver = ((data32 & 0x00FF0000) >> 16);
1250 card->fpga_version = FPGA_VERSION(major_ver,minor_ver);
1251 if (card->fpga_version > LEGACY_BUFFERS)
1252 card->buffer_size = BUF_SIZE;
1253 else
1254 card->buffer_size = OLD_BUF_SIZE;
1255 dev_info(&dev->dev, "Solos FPGA Version %d.%02d svn-%d\n",
1256 major_ver, minor_ver, fpga_ver);
1257
1258 if (fpga_ver < 37 && (fpga_upgrade || firmware_upgrade ||
1259 db_fpga_upgrade || db_firmware_upgrade)) {
1260 dev_warn(&dev->dev,
1261 "FPGA too old; cannot upgrade flash. Use JTAG.\n");
1262 fpga_upgrade = firmware_upgrade = 0;
1263 db_fpga_upgrade = db_firmware_upgrade = 0;
1264 }
1265
1266 /* Stopped using Atmel flash after 0.03-38 */
1267 if (fpga_ver < 39)
1268 card->atmel_flash = 1;
1269 else
1270 card->atmel_flash = 0;
1271
1272 data32 = ioread32(card->config_regs + PORTS);
1273 card->nr_ports = (data32 & 0x000000FF);
1274
1275 if (card->fpga_version >= DMA_SUPPORTED) {
1276 pci_set_master(dev);
1277 card->using_dma = 1;
1278 if (1) { /* All known FPGA versions so far */
1279 card->dma_alignment = 3;
1280 card->dma_bounce = kmalloc_array(card->nr_ports,
1281 BUF_SIZE, GFP_KERNEL);
1282 if (!card->dma_bounce) {
1283 dev_warn(&card->dev->dev, "Failed to allocate DMA bounce buffers\n");
1284 err = -ENOMEM;
1285 /* Fallback to MMIO doesn't work */
1286 goto out_unmap_both;
1287 }
1288 }
1289 } else {
1290 card->using_dma = 0;
1291 /* Set RX empty flag for all ports */
1292 iowrite32(0xF0, card->config_regs + FLAGS_ADDR);
1293 }
1294
1295 pci_set_drvdata(dev, card);
1296
1297 tasklet_init(&card->tlet, solos_bh, (unsigned long)card);
1298 spin_lock_init(&card->tx_lock);
1299 spin_lock_init(&card->tx_queue_lock);
1300 spin_lock_init(&card->cli_queue_lock);
1301 spin_lock_init(&card->param_queue_lock);
1302 INIT_LIST_HEAD(&card->param_queue);
1303
1304 err = request_irq(dev->irq, solos_irq, IRQF_SHARED,
1305 "solos-pci", card);
1306 if (err) {
1307 dev_dbg(&card->dev->dev, "Failed to request interrupt IRQ: %d\n", dev->irq);
1308 goto out_unmap_both;
1309 }
1310
1311 iowrite32(1, card->config_regs + IRQ_EN_ADDR);
1312
1313 if (fpga_upgrade)
1314 flash_upgrade(card, 0);
1315
1316 if (firmware_upgrade)
1317 flash_upgrade(card, 1);
1318
1319 if (db_fpga_upgrade)
1320 flash_upgrade(card, 2);
1321
1322 if (db_firmware_upgrade)
1323 flash_upgrade(card, 3);
1324
1325 err = atm_init(card, &dev->dev);
1326 if (err)
1327 goto out_free_irq;
1328
1329 if (card->fpga_version >= DMA_SUPPORTED &&
1330 sysfs_create_group(&card->dev->dev.kobj, &gpio_attr_group))
1331 dev_err(&card->dev->dev, "Could not register parameter group for GPIOs\n");
1332
1333 return 0;
1334
1335 out_free_irq:
1336 iowrite32(0, card->config_regs + IRQ_EN_ADDR);
1337 free_irq(dev->irq, card);
1338 tasklet_kill(&card->tlet);
1339
1340 out_unmap_both:
1341 kfree(card->dma_bounce);
1342 pci_iounmap(dev, card->buffers);
1343 out_unmap_config:
1344 pci_iounmap(dev, card->config_regs);
1345 out_release_regions:
1346 pci_release_regions(dev);
1347 out:
1348 kfree(card);
1349 return err;
1350}
1351
1352static int atm_init(struct solos_card *card, struct device *parent)
1353{
1354 int i;
1355
1356 for (i = 0; i < card->nr_ports; i++) {
1357 struct sk_buff *skb;
1358 struct pkt_hdr *header;
1359
1360 skb_queue_head_init(&card->tx_queue[i]);
1361 skb_queue_head_init(&card->cli_queue[i]);
1362
1363 card->atmdev[i] = atm_dev_register("solos-pci", parent, &fpga_ops, -1, NULL);
1364 if (!card->atmdev[i]) {
1365 dev_err(&card->dev->dev, "Could not register ATM device %d\n", i);
1366 atm_remove(card);
1367 return -ENODEV;
1368 }
1369 if (device_create_file(&card->atmdev[i]->class_dev, &dev_attr_console))
1370 dev_err(&card->dev->dev, "Could not register console for ATM device %d\n", i);
1371 if (sysfs_create_group(&card->atmdev[i]->class_dev.kobj, &solos_attr_group))
1372 dev_err(&card->dev->dev, "Could not register parameter group for ATM device %d\n", i);
1373
1374 dev_info(&card->dev->dev, "Registered ATM device %d\n", card->atmdev[i]->number);
1375
1376 card->atmdev[i]->ci_range.vpi_bits = 8;
1377 card->atmdev[i]->ci_range.vci_bits = 16;
1378 card->atmdev[i]->dev_data = card;
1379 card->atmdev[i]->phy_data = (void *)(unsigned long)i;
1380 atm_dev_signal_change(card->atmdev[i], ATM_PHY_SIG_FOUND);
1381
1382 skb = alloc_skb(sizeof(*header), GFP_KERNEL);
1383 if (!skb) {
1384 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in atm_init()\n");
1385 continue;
1386 }
1387
1388 header = skb_put(skb, sizeof(*header));
1389
1390 header->size = cpu_to_le16(0);
1391 header->vpi = cpu_to_le16(0);
1392 header->vci = cpu_to_le16(0);
1393 header->type = cpu_to_le16(PKT_STATUS);
1394
1395 fpga_queue(card, i, skb, NULL);
1396 }
1397 return 0;
1398}
1399
1400static void atm_remove(struct solos_card *card)
1401{
1402 int i;
1403
1404 for (i = 0; i < card->nr_ports; i++) {
1405 if (card->atmdev[i]) {
1406 struct sk_buff *skb;
1407
1408 dev_info(&card->dev->dev, "Unregistering ATM device %d\n", card->atmdev[i]->number);
1409
1410 sysfs_remove_group(&card->atmdev[i]->class_dev.kobj, &solos_attr_group);
1411 atm_dev_deregister(card->atmdev[i]);
1412
1413 skb = card->rx_skb[i];
1414 if (skb) {
1415 dma_unmap_single(&card->dev->dev, SKB_CB(skb)->dma_addr,
1416 RX_DMA_SIZE, DMA_FROM_DEVICE);
1417 dev_kfree_skb(skb);
1418 }
1419 skb = card->tx_skb[i];
1420 if (skb) {
1421 dma_unmap_single(&card->dev->dev, SKB_CB(skb)->dma_addr,
1422 skb->len, DMA_TO_DEVICE);
1423 dev_kfree_skb(skb);
1424 }
1425 while ((skb = skb_dequeue(&card->tx_queue[i])))
1426 dev_kfree_skb(skb);
1427
1428 }
1429 }
1430}
1431
1432static void fpga_remove(struct pci_dev *dev)
1433{
1434 struct solos_card *card = pci_get_drvdata(dev);
1435
1436 /* Disable IRQs */
1437 iowrite32(0, card->config_regs + IRQ_EN_ADDR);
1438
1439 /* Reset FPGA */
1440 iowrite32(1, card->config_regs + FPGA_MODE);
1441 (void)ioread32(card->config_regs + FPGA_MODE);
1442
1443 if (card->fpga_version >= DMA_SUPPORTED)
1444 sysfs_remove_group(&card->dev->dev.kobj, &gpio_attr_group);
1445
1446 atm_remove(card);
1447
1448 free_irq(dev->irq, card);
1449 tasklet_kill(&card->tlet);
1450
1451 kfree(card->dma_bounce);
1452
1453 /* Release device from reset */
1454 iowrite32(0, card->config_regs + FPGA_MODE);
1455 (void)ioread32(card->config_regs + FPGA_MODE);
1456
1457 pci_iounmap(dev, card->buffers);
1458 pci_iounmap(dev, card->config_regs);
1459
1460 pci_release_regions(dev);
1461 pci_disable_device(dev);
1462
1463 kfree(card);
1464}
1465
1466static const struct pci_device_id fpga_pci_tbl[] = {
1467 { 0x10ee, 0x0300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
1468 { 0, }
1469};
1470
1471MODULE_DEVICE_TABLE(pci,fpga_pci_tbl);
1472
1473static struct pci_driver fpga_driver = {
1474 .name = "solos",
1475 .id_table = fpga_pci_tbl,
1476 .probe = fpga_probe,
1477 .remove = fpga_remove,
1478};
1479
1480
1481static int __init solos_pci_init(void)
1482{
1483 BUILD_BUG_ON(sizeof(struct solos_skb_cb) > sizeof(((struct sk_buff *)0)->cb));
1484
1485 printk(KERN_INFO "Solos PCI Driver Version %s\n", VERSION);
1486 return pci_register_driver(&fpga_driver);
1487}
1488
1489static void __exit solos_pci_exit(void)
1490{
1491 pci_unregister_driver(&fpga_driver);
1492 printk(KERN_INFO "Solos PCI Driver %s Unloaded\n", VERSION);
1493}
1494
1495module_init(solos_pci_init);
1496module_exit(solos_pci_exit);
1/*
2 * Driver for the Solos PCI ADSL2+ card, designed to support Linux by
3 * Traverse Technologies -- http://www.traverse.com.au/
4 * Xrio Limited -- http://www.xrio.com/
5 *
6 *
7 * Copyright © 2008 Traverse Technologies
8 * Copyright © 2008 Intel Corporation
9 *
10 * Authors: Nathan Williams <nathan@traverse.com.au>
11 * David Woodhouse <dwmw2@infradead.org>
12 * Treker Chen <treker@xrio.com>
13 *
14 * This program is free software; you can redistribute it and/or
15 * modify it under the terms of the GNU General Public License
16 * version 2, as published by the Free Software Foundation.
17 *
18 * This program is distributed in the hope that it will be useful,
19 * but WITHOUT ANY WARRANTY; without even the implied warranty of
20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 * GNU General Public License for more details.
22 */
23
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 "1.04"
46#define DRIVER_VERSION 0x01
47#define PTAG "solos-pci"
48
49#define CONFIG_RAM_SIZE 128
50#define FLAGS_ADDR 0x7C
51#define IRQ_EN_ADDR 0x78
52#define FPGA_VER 0x74
53#define IRQ_CLEAR 0x70
54#define WRITE_FLASH 0x6C
55#define PORTS 0x68
56#define FLASH_BLOCK 0x64
57#define FLASH_BUSY 0x60
58#define FPGA_MODE 0x5C
59#define FLASH_MODE 0x58
60#define GPIO_STATUS 0x54
61#define DRIVER_VER 0x50
62#define TX_DMA_ADDR(port) (0x40 + (4 * (port)))
63#define RX_DMA_ADDR(port) (0x30 + (4 * (port)))
64
65#define DATA_RAM_SIZE 32768
66#define BUF_SIZE 2048
67#define OLD_BUF_SIZE 4096 /* For FPGA versions <= 2*/
68/* Old boards use ATMEL AD45DB161D flash */
69#define ATMEL_FPGA_PAGE 528 /* FPGA flash page size*/
70#define ATMEL_SOLOS_PAGE 512 /* Solos flash page size*/
71#define ATMEL_FPGA_BLOCK (ATMEL_FPGA_PAGE * 8) /* FPGA block size*/
72#define ATMEL_SOLOS_BLOCK (ATMEL_SOLOS_PAGE * 8) /* Solos block size*/
73/* Current boards use M25P/M25PE SPI flash */
74#define SPI_FLASH_BLOCK (256 * 64)
75
76#define RX_BUF(card, nr) ((card->buffers) + (nr)*(card->buffer_size)*2)
77#define TX_BUF(card, nr) ((card->buffers) + (nr)*(card->buffer_size)*2 + (card->buffer_size))
78#define FLASH_BUF ((card->buffers) + 4*(card->buffer_size)*2)
79
80#define RX_DMA_SIZE 2048
81
82#define FPGA_VERSION(a,b) (((a) << 8) + (b))
83#define LEGACY_BUFFERS 2
84#define DMA_SUPPORTED 4
85
86static int reset = 0;
87static int atmdebug = 0;
88static int firmware_upgrade = 0;
89static int fpga_upgrade = 0;
90static int db_firmware_upgrade = 0;
91static int db_fpga_upgrade = 0;
92
93struct pkt_hdr {
94 __le16 size;
95 __le16 vpi;
96 __le16 vci;
97 __le16 type;
98};
99
100struct solos_skb_cb {
101 struct atm_vcc *vcc;
102 uint32_t dma_addr;
103};
104
105
106#define SKB_CB(skb) ((struct solos_skb_cb *)skb->cb)
107
108#define PKT_DATA 0
109#define PKT_COMMAND 1
110#define PKT_POPEN 3
111#define PKT_PCLOSE 4
112#define PKT_STATUS 5
113
114struct solos_card {
115 void __iomem *config_regs;
116 void __iomem *buffers;
117 int nr_ports;
118 int tx_mask;
119 struct pci_dev *dev;
120 struct atm_dev *atmdev[4];
121 struct tasklet_struct tlet;
122 spinlock_t tx_lock;
123 spinlock_t tx_queue_lock;
124 spinlock_t cli_queue_lock;
125 spinlock_t param_queue_lock;
126 struct list_head param_queue;
127 struct sk_buff_head tx_queue[4];
128 struct sk_buff_head cli_queue[4];
129 struct sk_buff *tx_skb[4];
130 struct sk_buff *rx_skb[4];
131 unsigned char *dma_bounce;
132 wait_queue_head_t param_wq;
133 wait_queue_head_t fw_wq;
134 int using_dma;
135 int dma_alignment;
136 int fpga_version;
137 int buffer_size;
138 int atmel_flash;
139};
140
141
142struct solos_param {
143 struct list_head list;
144 pid_t pid;
145 int port;
146 struct sk_buff *response;
147};
148
149#define SOLOS_CHAN(atmdev) ((int)(unsigned long)(atmdev)->phy_data)
150
151MODULE_AUTHOR("Traverse Technologies <support@traverse.com.au>");
152MODULE_DESCRIPTION("Solos PCI driver");
153MODULE_VERSION(VERSION);
154MODULE_LICENSE("GPL");
155MODULE_FIRMWARE("solos-FPGA.bin");
156MODULE_FIRMWARE("solos-Firmware.bin");
157MODULE_FIRMWARE("solos-db-FPGA.bin");
158MODULE_PARM_DESC(reset, "Reset Solos chips on startup");
159MODULE_PARM_DESC(atmdebug, "Print ATM data");
160MODULE_PARM_DESC(firmware_upgrade, "Initiate Solos firmware upgrade");
161MODULE_PARM_DESC(fpga_upgrade, "Initiate FPGA upgrade");
162MODULE_PARM_DESC(db_firmware_upgrade, "Initiate daughter board Solos firmware upgrade");
163MODULE_PARM_DESC(db_fpga_upgrade, "Initiate daughter board FPGA upgrade");
164module_param(reset, int, 0444);
165module_param(atmdebug, int, 0644);
166module_param(firmware_upgrade, int, 0444);
167module_param(fpga_upgrade, int, 0444);
168module_param(db_firmware_upgrade, int, 0444);
169module_param(db_fpga_upgrade, int, 0444);
170
171static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb,
172 struct atm_vcc *vcc);
173static uint32_t fpga_tx(struct solos_card *);
174static irqreturn_t solos_irq(int irq, void *dev_id);
175static struct atm_vcc* find_vcc(struct atm_dev *dev, short vpi, int vci);
176static int atm_init(struct solos_card *, struct device *);
177static void atm_remove(struct solos_card *);
178static int send_command(struct solos_card *card, int dev, const char *buf, size_t size);
179static void solos_bh(unsigned long);
180static int print_buffer(struct sk_buff *buf);
181
182static inline void solos_pop(struct atm_vcc *vcc, struct sk_buff *skb)
183{
184 if (vcc->pop)
185 vcc->pop(vcc, skb);
186 else
187 dev_kfree_skb_any(skb);
188}
189
190static ssize_t solos_param_show(struct device *dev, struct device_attribute *attr,
191 char *buf)
192{
193 struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
194 struct solos_card *card = atmdev->dev_data;
195 struct solos_param prm;
196 struct sk_buff *skb;
197 struct pkt_hdr *header;
198 int buflen;
199
200 buflen = strlen(attr->attr.name) + 10;
201
202 skb = alloc_skb(sizeof(*header) + buflen, GFP_KERNEL);
203 if (!skb) {
204 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in solos_param_show()\n");
205 return -ENOMEM;
206 }
207
208 header = (void *)skb_put(skb, sizeof(*header));
209
210 buflen = snprintf((void *)&header[1], buflen - 1,
211 "L%05d\n%s\n", current->pid, attr->attr.name);
212 skb_put(skb, buflen);
213
214 header->size = cpu_to_le16(buflen);
215 header->vpi = cpu_to_le16(0);
216 header->vci = cpu_to_le16(0);
217 header->type = cpu_to_le16(PKT_COMMAND);
218
219 prm.pid = current->pid;
220 prm.response = NULL;
221 prm.port = SOLOS_CHAN(atmdev);
222
223 spin_lock_irq(&card->param_queue_lock);
224 list_add(&prm.list, &card->param_queue);
225 spin_unlock_irq(&card->param_queue_lock);
226
227 fpga_queue(card, prm.port, skb, NULL);
228
229 wait_event_timeout(card->param_wq, prm.response, 5 * HZ);
230
231 spin_lock_irq(&card->param_queue_lock);
232 list_del(&prm.list);
233 spin_unlock_irq(&card->param_queue_lock);
234
235 if (!prm.response)
236 return -EIO;
237
238 buflen = prm.response->len;
239 memcpy(buf, prm.response->data, buflen);
240 kfree_skb(prm.response);
241
242 return buflen;
243}
244
245static ssize_t solos_param_store(struct device *dev, struct device_attribute *attr,
246 const char *buf, size_t count)
247{
248 struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
249 struct solos_card *card = atmdev->dev_data;
250 struct solos_param prm;
251 struct sk_buff *skb;
252 struct pkt_hdr *header;
253 int buflen;
254 ssize_t ret;
255
256 buflen = strlen(attr->attr.name) + 11 + count;
257
258 skb = alloc_skb(sizeof(*header) + buflen, GFP_KERNEL);
259 if (!skb) {
260 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in solos_param_store()\n");
261 return -ENOMEM;
262 }
263
264 header = (void *)skb_put(skb, sizeof(*header));
265
266 buflen = snprintf((void *)&header[1], buflen - 1,
267 "L%05d\n%s\n%s\n", current->pid, attr->attr.name, buf);
268
269 skb_put(skb, buflen);
270 header->size = cpu_to_le16(buflen);
271 header->vpi = cpu_to_le16(0);
272 header->vci = cpu_to_le16(0);
273 header->type = cpu_to_le16(PKT_COMMAND);
274
275 prm.pid = current->pid;
276 prm.response = NULL;
277 prm.port = SOLOS_CHAN(atmdev);
278
279 spin_lock_irq(&card->param_queue_lock);
280 list_add(&prm.list, &card->param_queue);
281 spin_unlock_irq(&card->param_queue_lock);
282
283 fpga_queue(card, prm.port, skb, NULL);
284
285 wait_event_timeout(card->param_wq, prm.response, 5 * HZ);
286
287 spin_lock_irq(&card->param_queue_lock);
288 list_del(&prm.list);
289 spin_unlock_irq(&card->param_queue_lock);
290
291 skb = prm.response;
292
293 if (!skb)
294 return -EIO;
295
296 buflen = skb->len;
297
298 /* Sometimes it has a newline, sometimes it doesn't. */
299 if (skb->data[buflen - 1] == '\n')
300 buflen--;
301
302 if (buflen == 2 && !strncmp(skb->data, "OK", 2))
303 ret = count;
304 else if (buflen == 5 && !strncmp(skb->data, "ERROR", 5))
305 ret = -EIO;
306 else {
307 /* We know we have enough space allocated for this; we allocated
308 it ourselves */
309 skb->data[buflen] = 0;
310
311 dev_warn(&card->dev->dev, "Unexpected parameter response: '%s'\n",
312 skb->data);
313 ret = -EIO;
314 }
315 kfree_skb(skb);
316
317 return ret;
318}
319
320static char *next_string(struct sk_buff *skb)
321{
322 int i = 0;
323 char *this = skb->data;
324
325 for (i = 0; i < skb->len; i++) {
326 if (this[i] == '\n') {
327 this[i] = 0;
328 skb_pull(skb, i + 1);
329 return this;
330 }
331 if (!isprint(this[i]))
332 return NULL;
333 }
334 return NULL;
335}
336
337/*
338 * Status packet has fields separated by \n, starting with a version number
339 * for the information therein. Fields are....
340 *
341 * packet version
342 * RxBitRate (version >= 1)
343 * TxBitRate (version >= 1)
344 * State (version >= 1)
345 * LocalSNRMargin (version >= 1)
346 * LocalLineAttn (version >= 1)
347 */
348static int process_status(struct solos_card *card, int port, struct sk_buff *skb)
349{
350 char *str, *state_str, *snr, *attn;
351 int ver, rate_up, rate_down, err;
352
353 if (!card->atmdev[port])
354 return -ENODEV;
355
356 str = next_string(skb);
357 if (!str)
358 return -EIO;
359
360 err = kstrtoint(str, 10, &ver);
361 if (err) {
362 dev_warn(&card->dev->dev, "Unexpected status interrupt version\n");
363 return err;
364 }
365 if (ver < 1) {
366 dev_warn(&card->dev->dev, "Unexpected status interrupt version %d\n",
367 ver);
368 return -EIO;
369 }
370
371 str = next_string(skb);
372 if (!str)
373 return -EIO;
374 if (!strcmp(str, "ERROR")) {
375 dev_dbg(&card->dev->dev, "Status packet indicated Solos error on port %d (starting up?)\n",
376 port);
377 return 0;
378 }
379
380 err = kstrtoint(str, 10, &rate_down);
381 if (err)
382 return err;
383
384 str = next_string(skb);
385 if (!str)
386 return -EIO;
387 err = kstrtoint(str, 10, &rate_up);
388 if (err)
389 return err;
390
391 state_str = next_string(skb);
392 if (!state_str)
393 return -EIO;
394
395 /* Anything but 'Showtime' is down */
396 if (strcmp(state_str, "Showtime")) {
397 atm_dev_signal_change(card->atmdev[port], ATM_PHY_SIG_LOST);
398 dev_info(&card->dev->dev, "Port %d: %s\n", port, state_str);
399 return 0;
400 }
401
402 snr = next_string(skb);
403 if (!snr)
404 return -EIO;
405 attn = next_string(skb);
406 if (!attn)
407 return -EIO;
408
409 dev_info(&card->dev->dev, "Port %d: %s @%d/%d kb/s%s%s%s%s\n",
410 port, state_str, rate_down/1000, rate_up/1000,
411 snr[0]?", SNR ":"", snr, attn[0]?", Attn ":"", attn);
412
413 card->atmdev[port]->link_rate = rate_down / 424;
414 atm_dev_signal_change(card->atmdev[port], ATM_PHY_SIG_FOUND);
415
416 return 0;
417}
418
419static int process_command(struct solos_card *card, int port, struct sk_buff *skb)
420{
421 struct solos_param *prm;
422 unsigned long flags;
423 int cmdpid;
424 int found = 0, err;
425
426 if (skb->len < 7)
427 return 0;
428
429 if (skb->data[0] != 'L' || !isdigit(skb->data[1]) ||
430 !isdigit(skb->data[2]) || !isdigit(skb->data[3]) ||
431 !isdigit(skb->data[4]) || !isdigit(skb->data[5]) ||
432 skb->data[6] != '\n')
433 return 0;
434
435 err = kstrtoint(&skb->data[1], 10, &cmdpid);
436 if (err)
437 return err;
438
439 spin_lock_irqsave(&card->param_queue_lock, flags);
440 list_for_each_entry(prm, &card->param_queue, list) {
441 if (prm->port == port && prm->pid == cmdpid) {
442 prm->response = skb;
443 skb_pull(skb, 7);
444 wake_up(&card->param_wq);
445 found = 1;
446 break;
447 }
448 }
449 spin_unlock_irqrestore(&card->param_queue_lock, flags);
450 return found;
451}
452
453static ssize_t console_show(struct device *dev, struct device_attribute *attr,
454 char *buf)
455{
456 struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
457 struct solos_card *card = atmdev->dev_data;
458 struct sk_buff *skb;
459 unsigned int len;
460
461 spin_lock(&card->cli_queue_lock);
462 skb = skb_dequeue(&card->cli_queue[SOLOS_CHAN(atmdev)]);
463 spin_unlock(&card->cli_queue_lock);
464 if(skb == NULL)
465 return sprintf(buf, "No data.\n");
466
467 len = skb->len;
468 memcpy(buf, skb->data, len);
469
470 kfree_skb(skb);
471 return len;
472}
473
474static int send_command(struct solos_card *card, int dev, const char *buf, size_t size)
475{
476 struct sk_buff *skb;
477 struct pkt_hdr *header;
478
479 if (size > (BUF_SIZE - sizeof(*header))) {
480 dev_dbg(&card->dev->dev, "Command is too big. Dropping request\n");
481 return 0;
482 }
483 skb = alloc_skb(size + sizeof(*header), GFP_ATOMIC);
484 if (!skb) {
485 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in send_command()\n");
486 return 0;
487 }
488
489 header = (void *)skb_put(skb, sizeof(*header));
490
491 header->size = cpu_to_le16(size);
492 header->vpi = cpu_to_le16(0);
493 header->vci = cpu_to_le16(0);
494 header->type = cpu_to_le16(PKT_COMMAND);
495
496 memcpy(skb_put(skb, size), buf, size);
497
498 fpga_queue(card, dev, skb, NULL);
499
500 return 0;
501}
502
503static ssize_t console_store(struct device *dev, struct device_attribute *attr,
504 const char *buf, size_t count)
505{
506 struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
507 struct solos_card *card = atmdev->dev_data;
508 int err;
509
510 err = send_command(card, SOLOS_CHAN(atmdev), buf, count);
511
512 return err?:count;
513}
514
515struct geos_gpio_attr {
516 struct device_attribute attr;
517 int offset;
518};
519
520#define SOLOS_GPIO_ATTR(_name, _mode, _show, _store, _offset) \
521 struct geos_gpio_attr gpio_attr_##_name = { \
522 .attr = __ATTR(_name, _mode, _show, _store), \
523 .offset = _offset }
524
525static ssize_t geos_gpio_store(struct device *dev, struct device_attribute *attr,
526 const char *buf, size_t count)
527{
528 struct pci_dev *pdev = to_pci_dev(dev);
529 struct geos_gpio_attr *gattr = container_of(attr, struct geos_gpio_attr, attr);
530 struct solos_card *card = pci_get_drvdata(pdev);
531 uint32_t data32;
532
533 if (count != 1 && (count != 2 || buf[1] != '\n'))
534 return -EINVAL;
535
536 spin_lock_irq(&card->param_queue_lock);
537 data32 = ioread32(card->config_regs + GPIO_STATUS);
538 if (buf[0] == '1') {
539 data32 |= 1 << gattr->offset;
540 iowrite32(data32, card->config_regs + GPIO_STATUS);
541 } else if (buf[0] == '0') {
542 data32 &= ~(1 << gattr->offset);
543 iowrite32(data32, card->config_regs + GPIO_STATUS);
544 } else {
545 count = -EINVAL;
546 }
547 spin_unlock_irq(&card->param_queue_lock);
548 return count;
549}
550
551static ssize_t geos_gpio_show(struct device *dev, struct device_attribute *attr,
552 char *buf)
553{
554 struct pci_dev *pdev = to_pci_dev(dev);
555 struct geos_gpio_attr *gattr = container_of(attr, struct geos_gpio_attr, attr);
556 struct solos_card *card = pci_get_drvdata(pdev);
557 uint32_t data32;
558
559 data32 = ioread32(card->config_regs + GPIO_STATUS);
560 data32 = (data32 >> gattr->offset) & 1;
561
562 return sprintf(buf, "%d\n", data32);
563}
564
565static ssize_t hardware_show(struct device *dev, struct device_attribute *attr,
566 char *buf)
567{
568 struct pci_dev *pdev = to_pci_dev(dev);
569 struct geos_gpio_attr *gattr = container_of(attr, struct geos_gpio_attr, attr);
570 struct solos_card *card = pci_get_drvdata(pdev);
571 uint32_t data32;
572
573 data32 = ioread32(card->config_regs + GPIO_STATUS);
574 switch (gattr->offset) {
575 case 0:
576 /* HardwareVersion */
577 data32 = data32 & 0x1F;
578 break;
579 case 1:
580 /* HardwareVariant */
581 data32 = (data32 >> 5) & 0x0F;
582 break;
583 }
584 return sprintf(buf, "%d\n", data32);
585}
586
587static DEVICE_ATTR(console, 0644, console_show, console_store);
588
589
590#define SOLOS_ATTR_RO(x) static DEVICE_ATTR(x, 0444, solos_param_show, NULL);
591#define SOLOS_ATTR_RW(x) static DEVICE_ATTR(x, 0644, solos_param_show, solos_param_store);
592
593#include "solos-attrlist.c"
594
595static SOLOS_GPIO_ATTR(GPIO1, 0644, geos_gpio_show, geos_gpio_store, 9);
596static SOLOS_GPIO_ATTR(GPIO2, 0644, geos_gpio_show, geos_gpio_store, 10);
597static SOLOS_GPIO_ATTR(GPIO3, 0644, geos_gpio_show, geos_gpio_store, 11);
598static SOLOS_GPIO_ATTR(GPIO4, 0644, geos_gpio_show, geos_gpio_store, 12);
599static SOLOS_GPIO_ATTR(GPIO5, 0644, geos_gpio_show, geos_gpio_store, 13);
600static SOLOS_GPIO_ATTR(PushButton, 0444, geos_gpio_show, NULL, 14);
601static SOLOS_GPIO_ATTR(HardwareVersion, 0444, hardware_show, NULL, 0);
602static SOLOS_GPIO_ATTR(HardwareVariant, 0444, hardware_show, NULL, 1);
603#undef SOLOS_ATTR_RO
604#undef SOLOS_ATTR_RW
605
606#define SOLOS_ATTR_RO(x) &dev_attr_##x.attr,
607#define SOLOS_ATTR_RW(x) &dev_attr_##x.attr,
608
609static struct attribute *solos_attrs[] = {
610#include "solos-attrlist.c"
611 NULL
612};
613
614static struct attribute_group solos_attr_group = {
615 .attrs = solos_attrs,
616 .name = "parameters",
617};
618
619static struct attribute *gpio_attrs[] = {
620 &gpio_attr_GPIO1.attr.attr,
621 &gpio_attr_GPIO2.attr.attr,
622 &gpio_attr_GPIO3.attr.attr,
623 &gpio_attr_GPIO4.attr.attr,
624 &gpio_attr_GPIO5.attr.attr,
625 &gpio_attr_PushButton.attr.attr,
626 &gpio_attr_HardwareVersion.attr.attr,
627 &gpio_attr_HardwareVariant.attr.attr,
628 NULL
629};
630
631static struct attribute_group gpio_attr_group = {
632 .attrs = gpio_attrs,
633 .name = "gpio",
634};
635
636static int flash_upgrade(struct solos_card *card, int chip)
637{
638 const struct firmware *fw;
639 const char *fw_name;
640 int blocksize = 0;
641 int numblocks = 0;
642 int offset;
643
644 switch (chip) {
645 case 0:
646 fw_name = "solos-FPGA.bin";
647 if (card->atmel_flash)
648 blocksize = ATMEL_FPGA_BLOCK;
649 else
650 blocksize = SPI_FLASH_BLOCK;
651 break;
652 case 1:
653 fw_name = "solos-Firmware.bin";
654 if (card->atmel_flash)
655 blocksize = ATMEL_SOLOS_BLOCK;
656 else
657 blocksize = SPI_FLASH_BLOCK;
658 break;
659 case 2:
660 if (card->fpga_version > LEGACY_BUFFERS){
661 fw_name = "solos-db-FPGA.bin";
662 if (card->atmel_flash)
663 blocksize = ATMEL_FPGA_BLOCK;
664 else
665 blocksize = SPI_FLASH_BLOCK;
666 } else {
667 dev_info(&card->dev->dev, "FPGA version doesn't support"
668 " daughter board upgrades\n");
669 return -EPERM;
670 }
671 break;
672 case 3:
673 if (card->fpga_version > LEGACY_BUFFERS){
674 fw_name = "solos-Firmware.bin";
675 if (card->atmel_flash)
676 blocksize = ATMEL_SOLOS_BLOCK;
677 else
678 blocksize = SPI_FLASH_BLOCK;
679 } else {
680 dev_info(&card->dev->dev, "FPGA version doesn't support"
681 " daughter board upgrades\n");
682 return -EPERM;
683 }
684 break;
685 default:
686 return -ENODEV;
687 }
688
689 if (request_firmware(&fw, fw_name, &card->dev->dev))
690 return -ENOENT;
691
692 dev_info(&card->dev->dev, "Flash upgrade starting\n");
693
694 /* New FPGAs require driver version before permitting flash upgrades */
695 iowrite32(DRIVER_VERSION, card->config_regs + DRIVER_VER);
696
697 numblocks = fw->size / blocksize;
698 dev_info(&card->dev->dev, "Firmware size: %zd\n", fw->size);
699 dev_info(&card->dev->dev, "Number of blocks: %d\n", numblocks);
700
701 dev_info(&card->dev->dev, "Changing FPGA to Update mode\n");
702 iowrite32(1, card->config_regs + FPGA_MODE);
703 (void) ioread32(card->config_regs + FPGA_MODE);
704
705 /* Set mode to Chip Erase */
706 if(chip == 0 || chip == 2)
707 dev_info(&card->dev->dev, "Set FPGA Flash mode to FPGA Chip Erase\n");
708 if(chip == 1 || chip == 3)
709 dev_info(&card->dev->dev, "Set FPGA Flash mode to Solos Chip Erase\n");
710 iowrite32((chip * 2), card->config_regs + FLASH_MODE);
711
712
713 iowrite32(1, card->config_regs + WRITE_FLASH);
714 wait_event(card->fw_wq, !ioread32(card->config_regs + FLASH_BUSY));
715
716 for (offset = 0; offset < fw->size; offset += blocksize) {
717 int i;
718
719 /* Clear write flag */
720 iowrite32(0, card->config_regs + WRITE_FLASH);
721
722 /* Set mode to Block Write */
723 /* dev_info(&card->dev->dev, "Set FPGA Flash mode to Block Write\n"); */
724 iowrite32(((chip * 2) + 1), card->config_regs + FLASH_MODE);
725
726 /* Copy block to buffer, swapping each 16 bits for Atmel flash */
727 for(i = 0; i < blocksize; i += 4) {
728 uint32_t word;
729 if (card->atmel_flash)
730 word = swahb32p((uint32_t *)(fw->data + offset + i));
731 else
732 word = *(uint32_t *)(fw->data + offset + i);
733 if(card->fpga_version > LEGACY_BUFFERS)
734 iowrite32(word, FLASH_BUF + i);
735 else
736 iowrite32(word, RX_BUF(card, 3) + i);
737 }
738
739 /* Specify block number and then trigger flash write */
740 iowrite32(offset / blocksize, card->config_regs + FLASH_BLOCK);
741 iowrite32(1, card->config_regs + WRITE_FLASH);
742 wait_event(card->fw_wq, !ioread32(card->config_regs + FLASH_BUSY));
743 }
744
745 release_firmware(fw);
746 iowrite32(0, card->config_regs + WRITE_FLASH);
747 iowrite32(0, card->config_regs + FPGA_MODE);
748 iowrite32(0, card->config_regs + FLASH_MODE);
749 dev_info(&card->dev->dev, "Returning FPGA to Data mode\n");
750 return 0;
751}
752
753static irqreturn_t solos_irq(int irq, void *dev_id)
754{
755 struct solos_card *card = dev_id;
756 int handled = 1;
757
758 iowrite32(0, card->config_regs + IRQ_CLEAR);
759
760 /* If we're up and running, just kick the tasklet to process TX/RX */
761 if (card->atmdev[0])
762 tasklet_schedule(&card->tlet);
763 else
764 wake_up(&card->fw_wq);
765
766 return IRQ_RETVAL(handled);
767}
768
769static void solos_bh(unsigned long card_arg)
770{
771 struct solos_card *card = (void *)card_arg;
772 uint32_t card_flags;
773 uint32_t rx_done = 0;
774 int port;
775
776 /*
777 * Since fpga_tx() is going to need to read the flags under its lock,
778 * it can return them to us so that we don't have to hit PCI MMIO
779 * again for the same information
780 */
781 card_flags = fpga_tx(card);
782
783 for (port = 0; port < card->nr_ports; port++) {
784 if (card_flags & (0x10 << port)) {
785 struct pkt_hdr _hdr, *header;
786 struct sk_buff *skb;
787 struct atm_vcc *vcc;
788 int size;
789
790 if (card->using_dma) {
791 skb = card->rx_skb[port];
792 card->rx_skb[port] = NULL;
793
794 dma_unmap_single(&card->dev->dev, SKB_CB(skb)->dma_addr,
795 RX_DMA_SIZE, DMA_FROM_DEVICE);
796
797 header = (void *)skb->data;
798 size = le16_to_cpu(header->size);
799 skb_put(skb, size + sizeof(*header));
800 skb_pull(skb, sizeof(*header));
801 } else {
802 header = &_hdr;
803
804 rx_done |= 0x10 << port;
805
806 memcpy_fromio(header, RX_BUF(card, port), sizeof(*header));
807
808 size = le16_to_cpu(header->size);
809 if (size > (card->buffer_size - sizeof(*header))){
810 dev_warn(&card->dev->dev, "Invalid buffer size\n");
811 continue;
812 }
813
814 /* Use netdev_alloc_skb() because it adds NET_SKB_PAD of
815 * headroom, and ensures we can route packets back out an
816 * Ethernet interface (for example) without having to
817 * reallocate. Adding NET_IP_ALIGN also ensures that both
818 * PPPoATM and PPPoEoBR2684 packets end up aligned. */
819 skb = netdev_alloc_skb_ip_align(NULL, size + 1);
820 if (!skb) {
821 if (net_ratelimit())
822 dev_warn(&card->dev->dev, "Failed to allocate sk_buff for RX\n");
823 continue;
824 }
825
826 memcpy_fromio(skb_put(skb, size),
827 RX_BUF(card, port) + sizeof(*header),
828 size);
829 }
830 if (atmdebug) {
831 dev_info(&card->dev->dev, "Received: port %d\n", port);
832 dev_info(&card->dev->dev, "size: %d VPI: %d VCI: %d\n",
833 size, le16_to_cpu(header->vpi),
834 le16_to_cpu(header->vci));
835 print_buffer(skb);
836 }
837
838 switch (le16_to_cpu(header->type)) {
839 case PKT_DATA:
840 vcc = find_vcc(card->atmdev[port], le16_to_cpu(header->vpi),
841 le16_to_cpu(header->vci));
842 if (!vcc) {
843 if (net_ratelimit())
844 dev_warn(&card->dev->dev, "Received packet for unknown VPI.VCI %d.%d on port %d\n",
845 le16_to_cpu(header->vpi), le16_to_cpu(header->vci),
846 port);
847 dev_kfree_skb_any(skb);
848 break;
849 }
850 atm_charge(vcc, skb->truesize);
851 vcc->push(vcc, skb);
852 atomic_inc(&vcc->stats->rx);
853 break;
854
855 case PKT_STATUS:
856 if (process_status(card, port, skb) &&
857 net_ratelimit()) {
858 dev_warn(&card->dev->dev, "Bad status packet of %d bytes on port %d:\n", skb->len, port);
859 print_buffer(skb);
860 }
861 dev_kfree_skb_any(skb);
862 break;
863
864 case PKT_COMMAND:
865 default: /* FIXME: Not really, surely? */
866 if (process_command(card, port, skb))
867 break;
868 spin_lock(&card->cli_queue_lock);
869 if (skb_queue_len(&card->cli_queue[port]) > 10) {
870 if (net_ratelimit())
871 dev_warn(&card->dev->dev, "Dropping console response on port %d\n",
872 port);
873 dev_kfree_skb_any(skb);
874 } else
875 skb_queue_tail(&card->cli_queue[port], skb);
876 spin_unlock(&card->cli_queue_lock);
877 break;
878 }
879 }
880 /* Allocate RX skbs for any ports which need them */
881 if (card->using_dma && card->atmdev[port] &&
882 !card->rx_skb[port]) {
883 /* Unlike the MMIO case (qv) we can't add NET_IP_ALIGN
884 * here; the FPGA can only DMA to addresses which are
885 * aligned to 4 bytes. */
886 struct sk_buff *skb = dev_alloc_skb(RX_DMA_SIZE);
887 if (skb) {
888 SKB_CB(skb)->dma_addr =
889 dma_map_single(&card->dev->dev, skb->data,
890 RX_DMA_SIZE, DMA_FROM_DEVICE);
891 iowrite32(SKB_CB(skb)->dma_addr,
892 card->config_regs + RX_DMA_ADDR(port));
893 card->rx_skb[port] = skb;
894 } else {
895 if (net_ratelimit())
896 dev_warn(&card->dev->dev, "Failed to allocate RX skb");
897
898 /* We'll have to try again later */
899 tasklet_schedule(&card->tlet);
900 }
901 }
902 }
903 if (rx_done)
904 iowrite32(rx_done, card->config_regs + FLAGS_ADDR);
905
906 return;
907}
908
909static struct atm_vcc *find_vcc(struct atm_dev *dev, short vpi, int vci)
910{
911 struct hlist_head *head;
912 struct atm_vcc *vcc = NULL;
913 struct sock *s;
914
915 read_lock(&vcc_sklist_lock);
916 head = &vcc_hash[vci & (VCC_HTABLE_SIZE -1)];
917 sk_for_each(s, head) {
918 vcc = atm_sk(s);
919 if (vcc->dev == dev && vcc->vci == vci &&
920 vcc->vpi == vpi && vcc->qos.rxtp.traffic_class != ATM_NONE &&
921 test_bit(ATM_VF_READY, &vcc->flags))
922 goto out;
923 }
924 vcc = NULL;
925 out:
926 read_unlock(&vcc_sklist_lock);
927 return vcc;
928}
929
930static int popen(struct atm_vcc *vcc)
931{
932 struct solos_card *card = vcc->dev->dev_data;
933 struct sk_buff *skb;
934 struct pkt_hdr *header;
935
936 if (vcc->qos.aal != ATM_AAL5) {
937 dev_warn(&card->dev->dev, "Unsupported ATM type %d\n",
938 vcc->qos.aal);
939 return -EINVAL;
940 }
941
942 skb = alloc_skb(sizeof(*header), GFP_KERNEL);
943 if (!skb) {
944 if (net_ratelimit())
945 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in popen()\n");
946 return -ENOMEM;
947 }
948 header = (void *)skb_put(skb, sizeof(*header));
949
950 header->size = cpu_to_le16(0);
951 header->vpi = cpu_to_le16(vcc->vpi);
952 header->vci = cpu_to_le16(vcc->vci);
953 header->type = cpu_to_le16(PKT_POPEN);
954
955 fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, NULL);
956
957 set_bit(ATM_VF_ADDR, &vcc->flags);
958 set_bit(ATM_VF_READY, &vcc->flags);
959
960 return 0;
961}
962
963static void pclose(struct atm_vcc *vcc)
964{
965 struct solos_card *card = vcc->dev->dev_data;
966 unsigned char port = SOLOS_CHAN(vcc->dev);
967 struct sk_buff *skb, *tmpskb;
968 struct pkt_hdr *header;
969
970 /* Remove any yet-to-be-transmitted packets from the pending queue */
971 spin_lock(&card->tx_queue_lock);
972 skb_queue_walk_safe(&card->tx_queue[port], skb, tmpskb) {
973 if (SKB_CB(skb)->vcc == vcc) {
974 skb_unlink(skb, &card->tx_queue[port]);
975 solos_pop(vcc, skb);
976 }
977 }
978 spin_unlock(&card->tx_queue_lock);
979
980 skb = alloc_skb(sizeof(*header), GFP_KERNEL);
981 if (!skb) {
982 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in pclose()\n");
983 return;
984 }
985 header = (void *)skb_put(skb, sizeof(*header));
986
987 header->size = cpu_to_le16(0);
988 header->vpi = cpu_to_le16(vcc->vpi);
989 header->vci = cpu_to_le16(vcc->vci);
990 header->type = cpu_to_le16(PKT_PCLOSE);
991
992 skb_get(skb);
993 fpga_queue(card, port, skb, NULL);
994
995 if (!wait_event_timeout(card->param_wq, !skb_shared(skb), 5 * HZ))
996 dev_warn(&card->dev->dev,
997 "Timeout waiting for VCC close on port %d\n", port);
998
999 dev_kfree_skb(skb);
1000
1001 /* Hold up vcc_destroy_socket() (our caller) until solos_bh() in the
1002 tasklet has finished processing any incoming packets (and, more to
1003 the point, using the vcc pointer). */
1004 tasklet_unlock_wait(&card->tlet);
1005
1006 clear_bit(ATM_VF_ADDR, &vcc->flags);
1007
1008 return;
1009}
1010
1011static int print_buffer(struct sk_buff *buf)
1012{
1013 int len,i;
1014 char msg[500];
1015 char item[10];
1016
1017 len = buf->len;
1018 for (i = 0; i < len; i++){
1019 if(i % 8 == 0)
1020 sprintf(msg, "%02X: ", i);
1021
1022 sprintf(item,"%02X ",*(buf->data + i));
1023 strcat(msg, item);
1024 if(i % 8 == 7) {
1025 sprintf(item, "\n");
1026 strcat(msg, item);
1027 printk(KERN_DEBUG "%s", msg);
1028 }
1029 }
1030 if (i % 8 != 0) {
1031 sprintf(item, "\n");
1032 strcat(msg, item);
1033 printk(KERN_DEBUG "%s", msg);
1034 }
1035 printk(KERN_DEBUG "\n");
1036
1037 return 0;
1038}
1039
1040static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb,
1041 struct atm_vcc *vcc)
1042{
1043 int old_len;
1044 unsigned long flags;
1045
1046 SKB_CB(skb)->vcc = vcc;
1047
1048 spin_lock_irqsave(&card->tx_queue_lock, flags);
1049 old_len = skb_queue_len(&card->tx_queue[port]);
1050 skb_queue_tail(&card->tx_queue[port], skb);
1051 if (!old_len)
1052 card->tx_mask |= (1 << port);
1053 spin_unlock_irqrestore(&card->tx_queue_lock, flags);
1054
1055 /* Theoretically we could just schedule the tasklet here, but
1056 that introduces latency we don't want -- it's noticeable */
1057 if (!old_len)
1058 fpga_tx(card);
1059}
1060
1061static uint32_t fpga_tx(struct solos_card *card)
1062{
1063 uint32_t tx_pending, card_flags;
1064 uint32_t tx_started = 0;
1065 struct sk_buff *skb;
1066 struct atm_vcc *vcc;
1067 unsigned char port;
1068 unsigned long flags;
1069
1070 spin_lock_irqsave(&card->tx_lock, flags);
1071
1072 card_flags = ioread32(card->config_regs + FLAGS_ADDR);
1073 /*
1074 * The queue lock is required for _writing_ to tx_mask, but we're
1075 * OK to read it here without locking. The only potential update
1076 * that we could race with is in fpga_queue() where it sets a bit
1077 * for a new port... but it's going to call this function again if
1078 * it's doing that, anyway.
1079 */
1080 tx_pending = card->tx_mask & ~card_flags;
1081
1082 for (port = 0; tx_pending; tx_pending >>= 1, port++) {
1083 if (tx_pending & 1) {
1084 struct sk_buff *oldskb = card->tx_skb[port];
1085 if (oldskb) {
1086 dma_unmap_single(&card->dev->dev, SKB_CB(oldskb)->dma_addr,
1087 oldskb->len, DMA_TO_DEVICE);
1088 card->tx_skb[port] = NULL;
1089 }
1090 spin_lock(&card->tx_queue_lock);
1091 skb = skb_dequeue(&card->tx_queue[port]);
1092 if (!skb)
1093 card->tx_mask &= ~(1 << port);
1094 spin_unlock(&card->tx_queue_lock);
1095
1096 if (skb && !card->using_dma) {
1097 memcpy_toio(TX_BUF(card, port), skb->data, skb->len);
1098 tx_started |= 1 << port;
1099 oldskb = skb; /* We're done with this skb already */
1100 } else if (skb && card->using_dma) {
1101 unsigned char *data = skb->data;
1102 if ((unsigned long)data & card->dma_alignment) {
1103 data = card->dma_bounce + (BUF_SIZE * port);
1104 memcpy(data, skb->data, skb->len);
1105 }
1106 SKB_CB(skb)->dma_addr = dma_map_single(&card->dev->dev, data,
1107 skb->len, DMA_TO_DEVICE);
1108 card->tx_skb[port] = skb;
1109 iowrite32(SKB_CB(skb)->dma_addr,
1110 card->config_regs + TX_DMA_ADDR(port));
1111 }
1112
1113 if (!oldskb)
1114 continue;
1115
1116 /* Clean up and free oldskb now it's gone */
1117 if (atmdebug) {
1118 struct pkt_hdr *header = (void *)oldskb->data;
1119 int size = le16_to_cpu(header->size);
1120
1121 skb_pull(oldskb, sizeof(*header));
1122 dev_info(&card->dev->dev, "Transmitted: port %d\n",
1123 port);
1124 dev_info(&card->dev->dev, "size: %d VPI: %d VCI: %d\n",
1125 size, le16_to_cpu(header->vpi),
1126 le16_to_cpu(header->vci));
1127 print_buffer(oldskb);
1128 }
1129
1130 vcc = SKB_CB(oldskb)->vcc;
1131
1132 if (vcc) {
1133 atomic_inc(&vcc->stats->tx);
1134 solos_pop(vcc, oldskb);
1135 } else {
1136 dev_kfree_skb_irq(oldskb);
1137 wake_up(&card->param_wq);
1138 }
1139 }
1140 }
1141 /* For non-DMA TX, write the 'TX start' bit for all four ports simultaneously */
1142 if (tx_started)
1143 iowrite32(tx_started, card->config_regs + FLAGS_ADDR);
1144
1145 spin_unlock_irqrestore(&card->tx_lock, flags);
1146 return card_flags;
1147}
1148
1149static int psend(struct atm_vcc *vcc, struct sk_buff *skb)
1150{
1151 struct solos_card *card = vcc->dev->dev_data;
1152 struct pkt_hdr *header;
1153 int pktlen;
1154
1155 pktlen = skb->len;
1156 if (pktlen > (BUF_SIZE - sizeof(*header))) {
1157 dev_warn(&card->dev->dev, "Length of PDU is too large. Dropping PDU.\n");
1158 solos_pop(vcc, skb);
1159 return 0;
1160 }
1161
1162 if (!skb_clone_writable(skb, sizeof(*header))) {
1163 int expand_by = 0;
1164 int ret;
1165
1166 if (skb_headroom(skb) < sizeof(*header))
1167 expand_by = sizeof(*header) - skb_headroom(skb);
1168
1169 ret = pskb_expand_head(skb, expand_by, 0, GFP_ATOMIC);
1170 if (ret) {
1171 dev_warn(&card->dev->dev, "pskb_expand_head failed.\n");
1172 solos_pop(vcc, skb);
1173 return ret;
1174 }
1175 }
1176
1177 header = (void *)skb_push(skb, sizeof(*header));
1178
1179 /* This does _not_ include the size of the header */
1180 header->size = cpu_to_le16(pktlen);
1181 header->vpi = cpu_to_le16(vcc->vpi);
1182 header->vci = cpu_to_le16(vcc->vci);
1183 header->type = cpu_to_le16(PKT_DATA);
1184
1185 fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, vcc);
1186
1187 return 0;
1188}
1189
1190static struct atmdev_ops fpga_ops = {
1191 .open = popen,
1192 .close = pclose,
1193 .ioctl = NULL,
1194 .getsockopt = NULL,
1195 .setsockopt = NULL,
1196 .send = psend,
1197 .send_oam = NULL,
1198 .phy_put = NULL,
1199 .phy_get = NULL,
1200 .change_qos = NULL,
1201 .proc_read = NULL,
1202 .owner = THIS_MODULE
1203};
1204
1205static int fpga_probe(struct pci_dev *dev, const struct pci_device_id *id)
1206{
1207 int err;
1208 uint16_t fpga_ver;
1209 uint8_t major_ver, minor_ver;
1210 uint32_t data32;
1211 struct solos_card *card;
1212
1213 card = kzalloc(sizeof(*card), GFP_KERNEL);
1214 if (!card)
1215 return -ENOMEM;
1216
1217 card->dev = dev;
1218 init_waitqueue_head(&card->fw_wq);
1219 init_waitqueue_head(&card->param_wq);
1220
1221 err = pci_enable_device(dev);
1222 if (err) {
1223 dev_warn(&dev->dev, "Failed to enable PCI device\n");
1224 goto out;
1225 }
1226
1227 err = dma_set_mask_and_coherent(&dev->dev, DMA_BIT_MASK(32));
1228 if (err) {
1229 dev_warn(&dev->dev, "Failed to set 32-bit DMA mask\n");
1230 goto out;
1231 }
1232
1233 err = pci_request_regions(dev, "solos");
1234 if (err) {
1235 dev_warn(&dev->dev, "Failed to request regions\n");
1236 goto out;
1237 }
1238
1239 card->config_regs = pci_iomap(dev, 0, CONFIG_RAM_SIZE);
1240 if (!card->config_regs) {
1241 dev_warn(&dev->dev, "Failed to ioremap config registers\n");
1242 err = -ENOMEM;
1243 goto out_release_regions;
1244 }
1245 card->buffers = pci_iomap(dev, 1, DATA_RAM_SIZE);
1246 if (!card->buffers) {
1247 dev_warn(&dev->dev, "Failed to ioremap data buffers\n");
1248 err = -ENOMEM;
1249 goto out_unmap_config;
1250 }
1251
1252 if (reset) {
1253 iowrite32(1, card->config_regs + FPGA_MODE);
1254 data32 = ioread32(card->config_regs + FPGA_MODE);
1255
1256 iowrite32(0, card->config_regs + FPGA_MODE);
1257 data32 = ioread32(card->config_regs + FPGA_MODE);
1258 }
1259
1260 data32 = ioread32(card->config_regs + FPGA_VER);
1261 fpga_ver = (data32 & 0x0000FFFF);
1262 major_ver = ((data32 & 0xFF000000) >> 24);
1263 minor_ver = ((data32 & 0x00FF0000) >> 16);
1264 card->fpga_version = FPGA_VERSION(major_ver,minor_ver);
1265 if (card->fpga_version > LEGACY_BUFFERS)
1266 card->buffer_size = BUF_SIZE;
1267 else
1268 card->buffer_size = OLD_BUF_SIZE;
1269 dev_info(&dev->dev, "Solos FPGA Version %d.%02d svn-%d\n",
1270 major_ver, minor_ver, fpga_ver);
1271
1272 if (fpga_ver < 37 && (fpga_upgrade || firmware_upgrade ||
1273 db_fpga_upgrade || db_firmware_upgrade)) {
1274 dev_warn(&dev->dev,
1275 "FPGA too old; cannot upgrade flash. Use JTAG.\n");
1276 fpga_upgrade = firmware_upgrade = 0;
1277 db_fpga_upgrade = db_firmware_upgrade = 0;
1278 }
1279
1280 /* Stopped using Atmel flash after 0.03-38 */
1281 if (fpga_ver < 39)
1282 card->atmel_flash = 1;
1283 else
1284 card->atmel_flash = 0;
1285
1286 data32 = ioread32(card->config_regs + PORTS);
1287 card->nr_ports = (data32 & 0x000000FF);
1288
1289 if (card->fpga_version >= DMA_SUPPORTED) {
1290 pci_set_master(dev);
1291 card->using_dma = 1;
1292 if (1) { /* All known FPGA versions so far */
1293 card->dma_alignment = 3;
1294 card->dma_bounce = kmalloc(card->nr_ports * BUF_SIZE, GFP_KERNEL);
1295 if (!card->dma_bounce) {
1296 dev_warn(&card->dev->dev, "Failed to allocate DMA bounce buffers\n");
1297 err = -ENOMEM;
1298 /* Fallback to MMIO doesn't work */
1299 goto out_unmap_both;
1300 }
1301 }
1302 } else {
1303 card->using_dma = 0;
1304 /* Set RX empty flag for all ports */
1305 iowrite32(0xF0, card->config_regs + FLAGS_ADDR);
1306 }
1307
1308 pci_set_drvdata(dev, card);
1309
1310 tasklet_init(&card->tlet, solos_bh, (unsigned long)card);
1311 spin_lock_init(&card->tx_lock);
1312 spin_lock_init(&card->tx_queue_lock);
1313 spin_lock_init(&card->cli_queue_lock);
1314 spin_lock_init(&card->param_queue_lock);
1315 INIT_LIST_HEAD(&card->param_queue);
1316
1317 err = request_irq(dev->irq, solos_irq, IRQF_SHARED,
1318 "solos-pci", card);
1319 if (err) {
1320 dev_dbg(&card->dev->dev, "Failed to request interrupt IRQ: %d\n", dev->irq);
1321 goto out_unmap_both;
1322 }
1323
1324 iowrite32(1, card->config_regs + IRQ_EN_ADDR);
1325
1326 if (fpga_upgrade)
1327 flash_upgrade(card, 0);
1328
1329 if (firmware_upgrade)
1330 flash_upgrade(card, 1);
1331
1332 if (db_fpga_upgrade)
1333 flash_upgrade(card, 2);
1334
1335 if (db_firmware_upgrade)
1336 flash_upgrade(card, 3);
1337
1338 err = atm_init(card, &dev->dev);
1339 if (err)
1340 goto out_free_irq;
1341
1342 if (card->fpga_version >= DMA_SUPPORTED &&
1343 sysfs_create_group(&card->dev->dev.kobj, &gpio_attr_group))
1344 dev_err(&card->dev->dev, "Could not register parameter group for GPIOs\n");
1345
1346 return 0;
1347
1348 out_free_irq:
1349 iowrite32(0, card->config_regs + IRQ_EN_ADDR);
1350 free_irq(dev->irq, card);
1351 tasklet_kill(&card->tlet);
1352
1353 out_unmap_both:
1354 kfree(card->dma_bounce);
1355 pci_iounmap(dev, card->buffers);
1356 out_unmap_config:
1357 pci_iounmap(dev, card->config_regs);
1358 out_release_regions:
1359 pci_release_regions(dev);
1360 out:
1361 kfree(card);
1362 return err;
1363}
1364
1365static int atm_init(struct solos_card *card, struct device *parent)
1366{
1367 int i;
1368
1369 for (i = 0; i < card->nr_ports; i++) {
1370 struct sk_buff *skb;
1371 struct pkt_hdr *header;
1372
1373 skb_queue_head_init(&card->tx_queue[i]);
1374 skb_queue_head_init(&card->cli_queue[i]);
1375
1376 card->atmdev[i] = atm_dev_register("solos-pci", parent, &fpga_ops, -1, NULL);
1377 if (!card->atmdev[i]) {
1378 dev_err(&card->dev->dev, "Could not register ATM device %d\n", i);
1379 atm_remove(card);
1380 return -ENODEV;
1381 }
1382 if (device_create_file(&card->atmdev[i]->class_dev, &dev_attr_console))
1383 dev_err(&card->dev->dev, "Could not register console for ATM device %d\n", i);
1384 if (sysfs_create_group(&card->atmdev[i]->class_dev.kobj, &solos_attr_group))
1385 dev_err(&card->dev->dev, "Could not register parameter group for ATM device %d\n", i);
1386
1387 dev_info(&card->dev->dev, "Registered ATM device %d\n", card->atmdev[i]->number);
1388
1389 card->atmdev[i]->ci_range.vpi_bits = 8;
1390 card->atmdev[i]->ci_range.vci_bits = 16;
1391 card->atmdev[i]->dev_data = card;
1392 card->atmdev[i]->phy_data = (void *)(unsigned long)i;
1393 atm_dev_signal_change(card->atmdev[i], ATM_PHY_SIG_FOUND);
1394
1395 skb = alloc_skb(sizeof(*header), GFP_KERNEL);
1396 if (!skb) {
1397 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in atm_init()\n");
1398 continue;
1399 }
1400
1401 header = (void *)skb_put(skb, sizeof(*header));
1402
1403 header->size = cpu_to_le16(0);
1404 header->vpi = cpu_to_le16(0);
1405 header->vci = cpu_to_le16(0);
1406 header->type = cpu_to_le16(PKT_STATUS);
1407
1408 fpga_queue(card, i, skb, NULL);
1409 }
1410 return 0;
1411}
1412
1413static void atm_remove(struct solos_card *card)
1414{
1415 int i;
1416
1417 for (i = 0; i < card->nr_ports; i++) {
1418 if (card->atmdev[i]) {
1419 struct sk_buff *skb;
1420
1421 dev_info(&card->dev->dev, "Unregistering ATM device %d\n", card->atmdev[i]->number);
1422
1423 sysfs_remove_group(&card->atmdev[i]->class_dev.kobj, &solos_attr_group);
1424 atm_dev_deregister(card->atmdev[i]);
1425
1426 skb = card->rx_skb[i];
1427 if (skb) {
1428 dma_unmap_single(&card->dev->dev, SKB_CB(skb)->dma_addr,
1429 RX_DMA_SIZE, DMA_FROM_DEVICE);
1430 dev_kfree_skb(skb);
1431 }
1432 skb = card->tx_skb[i];
1433 if (skb) {
1434 dma_unmap_single(&card->dev->dev, SKB_CB(skb)->dma_addr,
1435 skb->len, DMA_TO_DEVICE);
1436 dev_kfree_skb(skb);
1437 }
1438 while ((skb = skb_dequeue(&card->tx_queue[i])))
1439 dev_kfree_skb(skb);
1440
1441 }
1442 }
1443}
1444
1445static void fpga_remove(struct pci_dev *dev)
1446{
1447 struct solos_card *card = pci_get_drvdata(dev);
1448
1449 /* Disable IRQs */
1450 iowrite32(0, card->config_regs + IRQ_EN_ADDR);
1451
1452 /* Reset FPGA */
1453 iowrite32(1, card->config_regs + FPGA_MODE);
1454 (void)ioread32(card->config_regs + FPGA_MODE);
1455
1456 if (card->fpga_version >= DMA_SUPPORTED)
1457 sysfs_remove_group(&card->dev->dev.kobj, &gpio_attr_group);
1458
1459 atm_remove(card);
1460
1461 free_irq(dev->irq, card);
1462 tasklet_kill(&card->tlet);
1463
1464 kfree(card->dma_bounce);
1465
1466 /* Release device from reset */
1467 iowrite32(0, card->config_regs + FPGA_MODE);
1468 (void)ioread32(card->config_regs + FPGA_MODE);
1469
1470 pci_iounmap(dev, card->buffers);
1471 pci_iounmap(dev, card->config_regs);
1472
1473 pci_release_regions(dev);
1474 pci_disable_device(dev);
1475
1476 kfree(card);
1477}
1478
1479static struct pci_device_id fpga_pci_tbl[] = {
1480 { 0x10ee, 0x0300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
1481 { 0, }
1482};
1483
1484MODULE_DEVICE_TABLE(pci,fpga_pci_tbl);
1485
1486static struct pci_driver fpga_driver = {
1487 .name = "solos",
1488 .id_table = fpga_pci_tbl,
1489 .probe = fpga_probe,
1490 .remove = fpga_remove,
1491};
1492
1493
1494static int __init solos_pci_init(void)
1495{
1496 BUILD_BUG_ON(sizeof(struct solos_skb_cb) > sizeof(((struct sk_buff *)0)->cb));
1497
1498 printk(KERN_INFO "Solos PCI Driver Version %s\n", VERSION);
1499 return pci_register_driver(&fpga_driver);
1500}
1501
1502static void __exit solos_pci_exit(void)
1503{
1504 pci_unregister_driver(&fpga_driver);
1505 printk(KERN_INFO "Solos PCI Driver %s Unloaded\n", VERSION);
1506}
1507
1508module_init(solos_pci_init);
1509module_exit(solos_pci_exit);