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inet: make sure to grab rcu_read_lock before using ireq->ireq_opt
[linux/fpc-iii.git] / drivers / atm / solos-pci.c
blob6ac2b2b1e8dec204921fa3cd3d3383f45a3a2794
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
86 static int reset = 0;
87 static int atmdebug = 0;
88 static int firmware_upgrade = 0;
89 static int fpga_upgrade = 0;
90 static int db_firmware_upgrade = 0;
91 static int db_fpga_upgrade = 0;
92
93 struct pkt_hdr {
94 __le16 size;
95 __le16 vpi;
96 __le16 vci;
97 __le16 type;
98 };
99
100 struct 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
114 struct 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
142 struct 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
151 MODULE_AUTHOR("Traverse Technologies <support@traverse.com.au>");
152 MODULE_DESCRIPTION("Solos PCI driver");
153 MODULE_VERSION(VERSION);
154 MODULE_LICENSE("GPL");
155 MODULE_FIRMWARE("solos-FPGA.bin");
156 MODULE_FIRMWARE("solos-Firmware.bin");
157 MODULE_FIRMWARE("solos-db-FPGA.bin");
158 MODULE_PARM_DESC(reset, "Reset Solos chips on startup");
159 MODULE_PARM_DESC(atmdebug, "Print ATM data");
160 MODULE_PARM_DESC(firmware_upgrade, "Initiate Solos firmware upgrade");
161 MODULE_PARM_DESC(fpga_upgrade, "Initiate FPGA upgrade");
162 MODULE_PARM_DESC(db_firmware_upgrade, "Initiate daughter board Solos firmware upgrade");
163 MODULE_PARM_DESC(db_fpga_upgrade, "Initiate daughter board FPGA upgrade");
164 module_param(reset, int, 0444);
165 module_param(atmdebug, int, 0644);
166 module_param(firmware_upgrade, int, 0444);
167 module_param(fpga_upgrade, int, 0444);
168 module_param(db_firmware_upgrade, int, 0444);
169 module_param(db_fpga_upgrade, int, 0444);
170
171 static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb,
172 struct atm_vcc *vcc);
173 static uint32_t fpga_tx(struct solos_card *);
174 static irqreturn_t solos_irq(int irq, void *dev_id);
175 static struct atm_vcc* find_vcc(struct atm_dev *dev, short vpi, int vci);
176 static int atm_init(struct solos_card *, struct device *);
177 static void atm_remove(struct solos_card *);
178 static int send_command(struct solos_card *card, int dev, const char *buf, size_t size);
179 static void solos_bh(unsigned long);
180 static int print_buffer(struct sk_buff *buf);
181
182 static 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
190 static 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
245 static 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
320 static 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 */
348 static 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
419 static 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
453 static 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
474 static 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
503 static 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
515 struct 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
525 static 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
551 static 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
565 static 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
587 static 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
595 static SOLOS_GPIO_ATTR(GPIO1, 0644, geos_gpio_show, geos_gpio_store, 9);
596 static SOLOS_GPIO_ATTR(GPIO2, 0644, geos_gpio_show, geos_gpio_store, 10);
597 static SOLOS_GPIO_ATTR(GPIO3, 0644, geos_gpio_show, geos_gpio_store, 11);
598 static SOLOS_GPIO_ATTR(GPIO4, 0644, geos_gpio_show, geos_gpio_store, 12);
599 static SOLOS_GPIO_ATTR(GPIO5, 0644, geos_gpio_show, geos_gpio_store, 13);
600 static SOLOS_GPIO_ATTR(PushButton, 0444, geos_gpio_show, NULL, 14);
601 static SOLOS_GPIO_ATTR(HardwareVersion, 0444, hardware_show, NULL, 0);
602 static 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
609 static struct attribute *solos_attrs[] = {
610 #include "solos-attrlist.c"
611 NULL
612 };
613
614 static struct attribute_group solos_attr_group = {
615 .attrs = solos_attrs,
616 .name = "parameters",
617 };
618
619 static 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
631 static struct attribute_group gpio_attr_group = {
632 .attrs = gpio_attrs,
633 .name = "gpio",
634 };
635
636 static 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
753 static 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
769 static 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
909 static 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
930 static 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
963 static 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
1011 static 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
1040 static 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
1061 static 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
1149 static 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
1190 static 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
1205 static 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
1365 static 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
1413 static 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
1445 static 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
1479 static struct pci_device_id fpga_pci_tbl[] = {
1480 { 0x10ee, 0x0300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
1481 { 0, }
1482 };
1483
1484 MODULE_DEVICE_TABLE(pci,fpga_pci_tbl);
1485
1486 static 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
1494 static 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
1502 static 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
1508 module_init(solos_pci_init);
1509 module_exit(solos_pci_exit);
Linux with added FPC-III support