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Merge tag 'armsoc-cleanup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
[deliverable/linux.git] / drivers / atm / solos-pci.c
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, *end, *state_str, *snr, *attn;
351 int ver, rate_up, rate_down;
352
353 if (!card->atmdev[port])
354 return -ENODEV;
355
356 str = next_string(skb);
357 if (!str)
358 return -EIO;
359
360 ver = simple_strtol(str, NULL, 10);
361 if (ver < 1) {
362 dev_warn(&card->dev->dev, "Unexpected status interrupt version %d\n",
363 ver);
364 return -EIO;
365 }
366
367 str = next_string(skb);
368 if (!str)
369 return -EIO;
370 if (!strcmp(str, "ERROR")) {
371 dev_dbg(&card->dev->dev, "Status packet indicated Solos error on port %d (starting up?)\n",
372 port);
373 return 0;
374 }
375
376 rate_down = simple_strtol(str, &end, 10);
377 if (*end)
378 return -EIO;
379
380 str = next_string(skb);
381 if (!str)
382 return -EIO;
383 rate_up = simple_strtol(str, &end, 10);
384 if (*end)
385 return -EIO;
386
387 state_str = next_string(skb);
388 if (!state_str)
389 return -EIO;
390
391 /* Anything but 'Showtime' is down */
392 if (strcmp(state_str, "Showtime")) {
393 atm_dev_signal_change(card->atmdev[port], ATM_PHY_SIG_LOST);
394 dev_info(&card->dev->dev, "Port %d: %s\n", port, state_str);
395 return 0;
396 }
397
398 snr = next_string(skb);
399 if (!snr)
400 return -EIO;
401 attn = next_string(skb);
402 if (!attn)
403 return -EIO;
404
405 dev_info(&card->dev->dev, "Port %d: %s @%d/%d kb/s%s%s%s%s\n",
406 port, state_str, rate_down/1000, rate_up/1000,
407 snr[0]?", SNR ":"", snr, attn[0]?", Attn ":"", attn);
408
409 card->atmdev[port]->link_rate = rate_down / 424;
410 atm_dev_signal_change(card->atmdev[port], ATM_PHY_SIG_FOUND);
411
412 return 0;
413 }
414
415 static int process_command(struct solos_card *card, int port, struct sk_buff *skb)
416 {
417 struct solos_param *prm;
418 unsigned long flags;
419 int cmdpid;
420 int found = 0;
421
422 if (skb->len < 7)
423 return 0;
424
425 if (skb->data[0] != 'L' || !isdigit(skb->data[1]) ||
426 !isdigit(skb->data[2]) || !isdigit(skb->data[3]) ||
427 !isdigit(skb->data[4]) || !isdigit(skb->data[5]) ||
428 skb->data[6] != '\n')
429 return 0;
430
431 cmdpid = simple_strtol(&skb->data[1], NULL, 10);
432
433 spin_lock_irqsave(&card->param_queue_lock, flags);
434 list_for_each_entry(prm, &card->param_queue, list) {
435 if (prm->port == port && prm->pid == cmdpid) {
436 prm->response = skb;
437 skb_pull(skb, 7);
438 wake_up(&card->param_wq);
439 found = 1;
440 break;
441 }
442 }
443 spin_unlock_irqrestore(&card->param_queue_lock, flags);
444 return found;
445 }
446
447 static ssize_t console_show(struct device *dev, struct device_attribute *attr,
448 char *buf)
449 {
450 struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
451 struct solos_card *card = atmdev->dev_data;
452 struct sk_buff *skb;
453 unsigned int len;
454
455 spin_lock(&card->cli_queue_lock);
456 skb = skb_dequeue(&card->cli_queue[SOLOS_CHAN(atmdev)]);
457 spin_unlock(&card->cli_queue_lock);
458 if(skb == NULL)
459 return sprintf(buf, "No data.\n");
460
461 len = skb->len;
462 memcpy(buf, skb->data, len);
463
464 kfree_skb(skb);
465 return len;
466 }
467
468 static int send_command(struct solos_card *card, int dev, const char *buf, size_t size)
469 {
470 struct sk_buff *skb;
471 struct pkt_hdr *header;
472
473 if (size > (BUF_SIZE - sizeof(*header))) {
474 dev_dbg(&card->dev->dev, "Command is too big. Dropping request\n");
475 return 0;
476 }
477 skb = alloc_skb(size + sizeof(*header), GFP_ATOMIC);
478 if (!skb) {
479 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in send_command()\n");
480 return 0;
481 }
482
483 header = (void *)skb_put(skb, sizeof(*header));
484
485 header->size = cpu_to_le16(size);
486 header->vpi = cpu_to_le16(0);
487 header->vci = cpu_to_le16(0);
488 header->type = cpu_to_le16(PKT_COMMAND);
489
490 memcpy(skb_put(skb, size), buf, size);
491
492 fpga_queue(card, dev, skb, NULL);
493
494 return 0;
495 }
496
497 static ssize_t console_store(struct device *dev, struct device_attribute *attr,
498 const char *buf, size_t count)
499 {
500 struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev);
501 struct solos_card *card = atmdev->dev_data;
502 int err;
503
504 err = send_command(card, SOLOS_CHAN(atmdev), buf, count);
505
506 return err?:count;
507 }
508
509 struct geos_gpio_attr {
510 struct device_attribute attr;
511 int offset;
512 };
513
514 #define SOLOS_GPIO_ATTR(_name, _mode, _show, _store, _offset) \
515 struct geos_gpio_attr gpio_attr_##_name = { \
516 .attr = __ATTR(_name, _mode, _show, _store), \
517 .offset = _offset }
518
519 static ssize_t geos_gpio_store(struct device *dev, struct device_attribute *attr,
520 const char *buf, size_t count)
521 {
522 struct pci_dev *pdev = container_of(dev, struct pci_dev, dev);
523 struct geos_gpio_attr *gattr = container_of(attr, struct geos_gpio_attr, attr);
524 struct solos_card *card = pci_get_drvdata(pdev);
525 uint32_t data32;
526
527 if (count != 1 && (count != 2 || buf[1] != '\n'))
528 return -EINVAL;
529
530 spin_lock_irq(&card->param_queue_lock);
531 data32 = ioread32(card->config_regs + GPIO_STATUS);
532 if (buf[0] == '1') {
533 data32 |= 1 << gattr->offset;
534 iowrite32(data32, card->config_regs + GPIO_STATUS);
535 } else if (buf[0] == '0') {
536 data32 &= ~(1 << gattr->offset);
537 iowrite32(data32, card->config_regs + GPIO_STATUS);
538 } else {
539 count = -EINVAL;
540 }
541 spin_unlock_irq(&card->param_queue_lock);
542 return count;
543 }
544
545 static ssize_t geos_gpio_show(struct device *dev, struct device_attribute *attr,
546 char *buf)
547 {
548 struct pci_dev *pdev = container_of(dev, struct pci_dev, dev);
549 struct geos_gpio_attr *gattr = container_of(attr, struct geos_gpio_attr, attr);
550 struct solos_card *card = pci_get_drvdata(pdev);
551 uint32_t data32;
552
553 data32 = ioread32(card->config_regs + GPIO_STATUS);
554 data32 = (data32 >> gattr->offset) & 1;
555
556 return sprintf(buf, "%d\n", data32);
557 }
558
559 static ssize_t hardware_show(struct device *dev, struct device_attribute *attr,
560 char *buf)
561 {
562 struct pci_dev *pdev = container_of(dev, struct pci_dev, dev);
563 struct geos_gpio_attr *gattr = container_of(attr, struct geos_gpio_attr, attr);
564 struct solos_card *card = pci_get_drvdata(pdev);
565 uint32_t data32;
566
567 data32 = ioread32(card->config_regs + GPIO_STATUS);
568 switch (gattr->offset) {
569 case 0:
570 /* HardwareVersion */
571 data32 = data32 & 0x1F;
572 break;
573 case 1:
574 /* HardwareVariant */
575 data32 = (data32 >> 5) & 0x0F;
576 break;
577 }
578 return sprintf(buf, "%d\n", data32);
579 }
580
581 static DEVICE_ATTR(console, 0644, console_show, console_store);
582
583
584 #define SOLOS_ATTR_RO(x) static DEVICE_ATTR(x, 0444, solos_param_show, NULL);
585 #define SOLOS_ATTR_RW(x) static DEVICE_ATTR(x, 0644, solos_param_show, solos_param_store);
586
587 #include "solos-attrlist.c"
588
589 static SOLOS_GPIO_ATTR(GPIO1, 0644, geos_gpio_show, geos_gpio_store, 9);
590 static SOLOS_GPIO_ATTR(GPIO2, 0644, geos_gpio_show, geos_gpio_store, 10);
591 static SOLOS_GPIO_ATTR(GPIO3, 0644, geos_gpio_show, geos_gpio_store, 11);
592 static SOLOS_GPIO_ATTR(GPIO4, 0644, geos_gpio_show, geos_gpio_store, 12);
593 static SOLOS_GPIO_ATTR(GPIO5, 0644, geos_gpio_show, geos_gpio_store, 13);
594 static SOLOS_GPIO_ATTR(PushButton, 0444, geos_gpio_show, NULL, 14);
595 static SOLOS_GPIO_ATTR(HardwareVersion, 0444, hardware_show, NULL, 0);
596 static SOLOS_GPIO_ATTR(HardwareVariant, 0444, hardware_show, NULL, 1);
597 #undef SOLOS_ATTR_RO
598 #undef SOLOS_ATTR_RW
599
600 #define SOLOS_ATTR_RO(x) &dev_attr_##x.attr,
601 #define SOLOS_ATTR_RW(x) &dev_attr_##x.attr,
602
603 static struct attribute *solos_attrs[] = {
604 #include "solos-attrlist.c"
605 NULL
606 };
607
608 static struct attribute_group solos_attr_group = {
609 .attrs = solos_attrs,
610 .name = "parameters",
611 };
612
613 static struct attribute *gpio_attrs[] = {
614 &gpio_attr_GPIO1.attr.attr,
615 &gpio_attr_GPIO2.attr.attr,
616 &gpio_attr_GPIO3.attr.attr,
617 &gpio_attr_GPIO4.attr.attr,
618 &gpio_attr_GPIO5.attr.attr,
619 &gpio_attr_PushButton.attr.attr,
620 &gpio_attr_HardwareVersion.attr.attr,
621 &gpio_attr_HardwareVariant.attr.attr,
622 NULL
623 };
624
625 static struct attribute_group gpio_attr_group = {
626 .attrs = gpio_attrs,
627 .name = "gpio",
628 };
629
630 static int flash_upgrade(struct solos_card *card, int chip)
631 {
632 const struct firmware *fw;
633 const char *fw_name;
634 int blocksize = 0;
635 int numblocks = 0;
636 int offset;
637
638 switch (chip) {
639 case 0:
640 fw_name = "solos-FPGA.bin";
641 if (card->atmel_flash)
642 blocksize = ATMEL_FPGA_BLOCK;
643 else
644 blocksize = SPI_FLASH_BLOCK;
645 break;
646 case 1:
647 fw_name = "solos-Firmware.bin";
648 if (card->atmel_flash)
649 blocksize = ATMEL_SOLOS_BLOCK;
650 else
651 blocksize = SPI_FLASH_BLOCK;
652 break;
653 case 2:
654 if (card->fpga_version > LEGACY_BUFFERS){
655 fw_name = "solos-db-FPGA.bin";
656 if (card->atmel_flash)
657 blocksize = ATMEL_FPGA_BLOCK;
658 else
659 blocksize = SPI_FLASH_BLOCK;
660 } else {
661 dev_info(&card->dev->dev, "FPGA version doesn't support"
662 " daughter board upgrades\n");
663 return -EPERM;
664 }
665 break;
666 case 3:
667 if (card->fpga_version > LEGACY_BUFFERS){
668 fw_name = "solos-Firmware.bin";
669 if (card->atmel_flash)
670 blocksize = ATMEL_SOLOS_BLOCK;
671 else
672 blocksize = SPI_FLASH_BLOCK;
673 } else {
674 dev_info(&card->dev->dev, "FPGA version doesn't support"
675 " daughter board upgrades\n");
676 return -EPERM;
677 }
678 break;
679 default:
680 return -ENODEV;
681 }
682
683 if (request_firmware(&fw, fw_name, &card->dev->dev))
684 return -ENOENT;
685
686 dev_info(&card->dev->dev, "Flash upgrade starting\n");
687
688 /* New FPGAs require driver version before permitting flash upgrades */
689 iowrite32(DRIVER_VERSION, card->config_regs + DRIVER_VER);
690
691 numblocks = fw->size / blocksize;
692 dev_info(&card->dev->dev, "Firmware size: %zd\n", fw->size);
693 dev_info(&card->dev->dev, "Number of blocks: %d\n", numblocks);
694
695 dev_info(&card->dev->dev, "Changing FPGA to Update mode\n");
696 iowrite32(1, card->config_regs + FPGA_MODE);
697 (void) ioread32(card->config_regs + FPGA_MODE);
698
699 /* Set mode to Chip Erase */
700 if(chip == 0 || chip == 2)
701 dev_info(&card->dev->dev, "Set FPGA Flash mode to FPGA Chip Erase\n");
702 if(chip == 1 || chip == 3)
703 dev_info(&card->dev->dev, "Set FPGA Flash mode to Solos Chip Erase\n");
704 iowrite32((chip * 2), card->config_regs + FLASH_MODE);
705
706
707 iowrite32(1, card->config_regs + WRITE_FLASH);
708 wait_event(card->fw_wq, !ioread32(card->config_regs + FLASH_BUSY));
709
710 for (offset = 0; offset < fw->size; offset += blocksize) {
711 int i;
712
713 /* Clear write flag */
714 iowrite32(0, card->config_regs + WRITE_FLASH);
715
716 /* Set mode to Block Write */
717 /* dev_info(&card->dev->dev, "Set FPGA Flash mode to Block Write\n"); */
718 iowrite32(((chip * 2) + 1), card->config_regs + FLASH_MODE);
719
720 /* Copy block to buffer, swapping each 16 bits for Atmel flash */
721 for(i = 0; i < blocksize; i += 4) {
722 uint32_t word;
723 if (card->atmel_flash)
724 word = swahb32p((uint32_t *)(fw->data + offset + i));
725 else
726 word = *(uint32_t *)(fw->data + offset + i);
727 if(card->fpga_version > LEGACY_BUFFERS)
728 iowrite32(word, FLASH_BUF + i);
729 else
730 iowrite32(word, RX_BUF(card, 3) + i);
731 }
732
733 /* Specify block number and then trigger flash write */
734 iowrite32(offset / blocksize, card->config_regs + FLASH_BLOCK);
735 iowrite32(1, card->config_regs + WRITE_FLASH);
736 wait_event(card->fw_wq, !ioread32(card->config_regs + FLASH_BUSY));
737 }
738
739 release_firmware(fw);
740 iowrite32(0, card->config_regs + WRITE_FLASH);
741 iowrite32(0, card->config_regs + FPGA_MODE);
742 iowrite32(0, card->config_regs + FLASH_MODE);
743 dev_info(&card->dev->dev, "Returning FPGA to Data mode\n");
744 return 0;
745 }
746
747 static irqreturn_t solos_irq(int irq, void *dev_id)
748 {
749 struct solos_card *card = dev_id;
750 int handled = 1;
751
752 iowrite32(0, card->config_regs + IRQ_CLEAR);
753
754 /* If we're up and running, just kick the tasklet to process TX/RX */
755 if (card->atmdev[0])
756 tasklet_schedule(&card->tlet);
757 else
758 wake_up(&card->fw_wq);
759
760 return IRQ_RETVAL(handled);
761 }
762
763 static void solos_bh(unsigned long card_arg)
764 {
765 struct solos_card *card = (void *)card_arg;
766 uint32_t card_flags;
767 uint32_t rx_done = 0;
768 int port;
769
770 /*
771 * Since fpga_tx() is going to need to read the flags under its lock,
772 * it can return them to us so that we don't have to hit PCI MMIO
773 * again for the same information
774 */
775 card_flags = fpga_tx(card);
776
777 for (port = 0; port < card->nr_ports; port++) {
778 if (card_flags & (0x10 << port)) {
779 struct pkt_hdr _hdr, *header;
780 struct sk_buff *skb;
781 struct atm_vcc *vcc;
782 int size;
783
784 if (card->using_dma) {
785 skb = card->rx_skb[port];
786 card->rx_skb[port] = NULL;
787
788 dma_unmap_single(&card->dev->dev, SKB_CB(skb)->dma_addr,
789 RX_DMA_SIZE, DMA_FROM_DEVICE);
790
791 header = (void *)skb->data;
792 size = le16_to_cpu(header->size);
793 skb_put(skb, size + sizeof(*header));
794 skb_pull(skb, sizeof(*header));
795 } else {
796 header = &_hdr;
797
798 rx_done |= 0x10 << port;
799
800 memcpy_fromio(header, RX_BUF(card, port), sizeof(*header));
801
802 size = le16_to_cpu(header->size);
803 if (size > (card->buffer_size - sizeof(*header))){
804 dev_warn(&card->dev->dev, "Invalid buffer size\n");
805 continue;
806 }
807
808 /* Use netdev_alloc_skb() because it adds NET_SKB_PAD of
809 * headroom, and ensures we can route packets back out an
810 * Ethernet interface (for example) without having to
811 * reallocate. Adding NET_IP_ALIGN also ensures that both
812 * PPPoATM and PPPoEoBR2684 packets end up aligned. */
813 skb = netdev_alloc_skb_ip_align(NULL, size + 1);
814 if (!skb) {
815 if (net_ratelimit())
816 dev_warn(&card->dev->dev, "Failed to allocate sk_buff for RX\n");
817 continue;
818 }
819
820 memcpy_fromio(skb_put(skb, size),
821 RX_BUF(card, port) + sizeof(*header),
822 size);
823 }
824 if (atmdebug) {
825 dev_info(&card->dev->dev, "Received: port %d\n", port);
826 dev_info(&card->dev->dev, "size: %d VPI: %d VCI: %d\n",
827 size, le16_to_cpu(header->vpi),
828 le16_to_cpu(header->vci));
829 print_buffer(skb);
830 }
831
832 switch (le16_to_cpu(header->type)) {
833 case PKT_DATA:
834 vcc = find_vcc(card->atmdev[port], le16_to_cpu(header->vpi),
835 le16_to_cpu(header->vci));
836 if (!vcc) {
837 if (net_ratelimit())
838 dev_warn(&card->dev->dev, "Received packet for unknown VPI.VCI %d.%d on port %d\n",
839 le16_to_cpu(header->vpi), le16_to_cpu(header->vci),
840 port);
841 dev_kfree_skb_any(skb);
842 break;
843 }
844 atm_charge(vcc, skb->truesize);
845 vcc->push(vcc, skb);
846 atomic_inc(&vcc->stats->rx);
847 break;
848
849 case PKT_STATUS:
850 if (process_status(card, port, skb) &&
851 net_ratelimit()) {
852 dev_warn(&card->dev->dev, "Bad status packet of %d bytes on port %d:\n", skb->len, port);
853 print_buffer(skb);
854 }
855 dev_kfree_skb_any(skb);
856 break;
857
858 case PKT_COMMAND:
859 default: /* FIXME: Not really, surely? */
860 if (process_command(card, port, skb))
861 break;
862 spin_lock(&card->cli_queue_lock);
863 if (skb_queue_len(&card->cli_queue[port]) > 10) {
864 if (net_ratelimit())
865 dev_warn(&card->dev->dev, "Dropping console response on port %d\n",
866 port);
867 dev_kfree_skb_any(skb);
868 } else
869 skb_queue_tail(&card->cli_queue[port], skb);
870 spin_unlock(&card->cli_queue_lock);
871 break;
872 }
873 }
874 /* Allocate RX skbs for any ports which need them */
875 if (card->using_dma && card->atmdev[port] &&
876 !card->rx_skb[port]) {
877 /* Unlike the MMIO case (qv) we can't add NET_IP_ALIGN
878 * here; the FPGA can only DMA to addresses which are
879 * aligned to 4 bytes. */
880 struct sk_buff *skb = dev_alloc_skb(RX_DMA_SIZE);
881 if (skb) {
882 SKB_CB(skb)->dma_addr =
883 dma_map_single(&card->dev->dev, skb->data,
884 RX_DMA_SIZE, DMA_FROM_DEVICE);
885 iowrite32(SKB_CB(skb)->dma_addr,
886 card->config_regs + RX_DMA_ADDR(port));
887 card->rx_skb[port] = skb;
888 } else {
889 if (net_ratelimit())
890 dev_warn(&card->dev->dev, "Failed to allocate RX skb");
891
892 /* We'll have to try again later */
893 tasklet_schedule(&card->tlet);
894 }
895 }
896 }
897 if (rx_done)
898 iowrite32(rx_done, card->config_regs + FLAGS_ADDR);
899
900 return;
901 }
902
903 static struct atm_vcc *find_vcc(struct atm_dev *dev, short vpi, int vci)
904 {
905 struct hlist_head *head;
906 struct atm_vcc *vcc = NULL;
907 struct sock *s;
908
909 read_lock(&vcc_sklist_lock);
910 head = &vcc_hash[vci & (VCC_HTABLE_SIZE -1)];
911 sk_for_each(s, head) {
912 vcc = atm_sk(s);
913 if (vcc->dev == dev && vcc->vci == vci &&
914 vcc->vpi == vpi && vcc->qos.rxtp.traffic_class != ATM_NONE &&
915 test_bit(ATM_VF_READY, &vcc->flags))
916 goto out;
917 }
918 vcc = NULL;
919 out:
920 read_unlock(&vcc_sklist_lock);
921 return vcc;
922 }
923
924 static int popen(struct atm_vcc *vcc)
925 {
926 struct solos_card *card = vcc->dev->dev_data;
927 struct sk_buff *skb;
928 struct pkt_hdr *header;
929
930 if (vcc->qos.aal != ATM_AAL5) {
931 dev_warn(&card->dev->dev, "Unsupported ATM type %d\n",
932 vcc->qos.aal);
933 return -EINVAL;
934 }
935
936 skb = alloc_skb(sizeof(*header), GFP_KERNEL);
937 if (!skb) {
938 if (net_ratelimit())
939 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in popen()\n");
940 return -ENOMEM;
941 }
942 header = (void *)skb_put(skb, sizeof(*header));
943
944 header->size = cpu_to_le16(0);
945 header->vpi = cpu_to_le16(vcc->vpi);
946 header->vci = cpu_to_le16(vcc->vci);
947 header->type = cpu_to_le16(PKT_POPEN);
948
949 fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, NULL);
950
951 set_bit(ATM_VF_ADDR, &vcc->flags);
952 set_bit(ATM_VF_READY, &vcc->flags);
953
954 return 0;
955 }
956
957 static void pclose(struct atm_vcc *vcc)
958 {
959 struct solos_card *card = vcc->dev->dev_data;
960 unsigned char port = SOLOS_CHAN(vcc->dev);
961 struct sk_buff *skb, *tmpskb;
962 struct pkt_hdr *header;
963
964 /* Remove any yet-to-be-transmitted packets from the pending queue */
965 spin_lock(&card->tx_queue_lock);
966 skb_queue_walk_safe(&card->tx_queue[port], skb, tmpskb) {
967 if (SKB_CB(skb)->vcc == vcc) {
968 skb_unlink(skb, &card->tx_queue[port]);
969 solos_pop(vcc, skb);
970 }
971 }
972 spin_unlock(&card->tx_queue_lock);
973
974 skb = alloc_skb(sizeof(*header), GFP_KERNEL);
975 if (!skb) {
976 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in pclose()\n");
977 return;
978 }
979 header = (void *)skb_put(skb, sizeof(*header));
980
981 header->size = cpu_to_le16(0);
982 header->vpi = cpu_to_le16(vcc->vpi);
983 header->vci = cpu_to_le16(vcc->vci);
984 header->type = cpu_to_le16(PKT_PCLOSE);
985
986 skb_get(skb);
987 fpga_queue(card, port, skb, NULL);
988
989 if (!wait_event_timeout(card->param_wq, !skb_shared(skb), 5 * HZ))
990 dev_warn(&card->dev->dev,
991 "Timeout waiting for VCC close on port %d\n", port);
992
993 dev_kfree_skb(skb);
994
995 /* Hold up vcc_destroy_socket() (our caller) until solos_bh() in the
996 tasklet has finished processing any incoming packets (and, more to
997 the point, using the vcc pointer). */
998 tasklet_unlock_wait(&card->tlet);
999
1000 clear_bit(ATM_VF_ADDR, &vcc->flags);
1001
1002 return;
1003 }
1004
1005 static int print_buffer(struct sk_buff *buf)
1006 {
1007 int len,i;
1008 char msg[500];
1009 char item[10];
1010
1011 len = buf->len;
1012 for (i = 0; i < len; i++){
1013 if(i % 8 == 0)
1014 sprintf(msg, "%02X: ", i);
1015
1016 sprintf(item,"%02X ",*(buf->data + i));
1017 strcat(msg, item);
1018 if(i % 8 == 7) {
1019 sprintf(item, "\n");
1020 strcat(msg, item);
1021 printk(KERN_DEBUG "%s", msg);
1022 }
1023 }
1024 if (i % 8 != 0) {
1025 sprintf(item, "\n");
1026 strcat(msg, item);
1027 printk(KERN_DEBUG "%s", msg);
1028 }
1029 printk(KERN_DEBUG "\n");
1030
1031 return 0;
1032 }
1033
1034 static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb,
1035 struct atm_vcc *vcc)
1036 {
1037 int old_len;
1038 unsigned long flags;
1039
1040 SKB_CB(skb)->vcc = vcc;
1041
1042 spin_lock_irqsave(&card->tx_queue_lock, flags);
1043 old_len = skb_queue_len(&card->tx_queue[port]);
1044 skb_queue_tail(&card->tx_queue[port], skb);
1045 if (!old_len)
1046 card->tx_mask |= (1 << port);
1047 spin_unlock_irqrestore(&card->tx_queue_lock, flags);
1048
1049 /* Theoretically we could just schedule the tasklet here, but
1050 that introduces latency we don't want -- it's noticeable */
1051 if (!old_len)
1052 fpga_tx(card);
1053 }
1054
1055 static uint32_t fpga_tx(struct solos_card *card)
1056 {
1057 uint32_t tx_pending, card_flags;
1058 uint32_t tx_started = 0;
1059 struct sk_buff *skb;
1060 struct atm_vcc *vcc;
1061 unsigned char port;
1062 unsigned long flags;
1063
1064 spin_lock_irqsave(&card->tx_lock, flags);
1065
1066 card_flags = ioread32(card->config_regs + FLAGS_ADDR);
1067 /*
1068 * The queue lock is required for _writing_ to tx_mask, but we're
1069 * OK to read it here without locking. The only potential update
1070 * that we could race with is in fpga_queue() where it sets a bit
1071 * for a new port... but it's going to call this function again if
1072 * it's doing that, anyway.
1073 */
1074 tx_pending = card->tx_mask & ~card_flags;
1075
1076 for (port = 0; tx_pending; tx_pending >>= 1, port++) {
1077 if (tx_pending & 1) {
1078 struct sk_buff *oldskb = card->tx_skb[port];
1079 if (oldskb) {
1080 dma_unmap_single(&card->dev->dev, SKB_CB(oldskb)->dma_addr,
1081 oldskb->len, DMA_TO_DEVICE);
1082 card->tx_skb[port] = NULL;
1083 }
1084 spin_lock(&card->tx_queue_lock);
1085 skb = skb_dequeue(&card->tx_queue[port]);
1086 if (!skb)
1087 card->tx_mask &= ~(1 << port);
1088 spin_unlock(&card->tx_queue_lock);
1089
1090 if (skb && !card->using_dma) {
1091 memcpy_toio(TX_BUF(card, port), skb->data, skb->len);
1092 tx_started |= 1 << port;
1093 oldskb = skb; /* We're done with this skb already */
1094 } else if (skb && card->using_dma) {
1095 unsigned char *data = skb->data;
1096 if ((unsigned long)data & card->dma_alignment) {
1097 data = card->dma_bounce + (BUF_SIZE * port);
1098 memcpy(data, skb->data, skb->len);
1099 }
1100 SKB_CB(skb)->dma_addr = dma_map_single(&card->dev->dev, data,
1101 skb->len, DMA_TO_DEVICE);
1102 card->tx_skb[port] = skb;
1103 iowrite32(SKB_CB(skb)->dma_addr,
1104 card->config_regs + TX_DMA_ADDR(port));
1105 }
1106
1107 if (!oldskb)
1108 continue;
1109
1110 /* Clean up and free oldskb now it's gone */
1111 if (atmdebug) {
1112 struct pkt_hdr *header = (void *)oldskb->data;
1113 int size = le16_to_cpu(header->size);
1114
1115 skb_pull(oldskb, sizeof(*header));
1116 dev_info(&card->dev->dev, "Transmitted: port %d\n",
1117 port);
1118 dev_info(&card->dev->dev, "size: %d VPI: %d VCI: %d\n",
1119 size, le16_to_cpu(header->vpi),
1120 le16_to_cpu(header->vci));
1121 print_buffer(oldskb);
1122 }
1123
1124 vcc = SKB_CB(oldskb)->vcc;
1125
1126 if (vcc) {
1127 atomic_inc(&vcc->stats->tx);
1128 solos_pop(vcc, oldskb);
1129 } else {
1130 dev_kfree_skb_irq(oldskb);
1131 wake_up(&card->param_wq);
1132 }
1133 }
1134 }
1135 /* For non-DMA TX, write the 'TX start' bit for all four ports simultaneously */
1136 if (tx_started)
1137 iowrite32(tx_started, card->config_regs + FLAGS_ADDR);
1138
1139 spin_unlock_irqrestore(&card->tx_lock, flags);
1140 return card_flags;
1141 }
1142
1143 static int psend(struct atm_vcc *vcc, struct sk_buff *skb)
1144 {
1145 struct solos_card *card = vcc->dev->dev_data;
1146 struct pkt_hdr *header;
1147 int pktlen;
1148
1149 pktlen = skb->len;
1150 if (pktlen > (BUF_SIZE - sizeof(*header))) {
1151 dev_warn(&card->dev->dev, "Length of PDU is too large. Dropping PDU.\n");
1152 solos_pop(vcc, skb);
1153 return 0;
1154 }
1155
1156 if (!skb_clone_writable(skb, sizeof(*header))) {
1157 int expand_by = 0;
1158 int ret;
1159
1160 if (skb_headroom(skb) < sizeof(*header))
1161 expand_by = sizeof(*header) - skb_headroom(skb);
1162
1163 ret = pskb_expand_head(skb, expand_by, 0, GFP_ATOMIC);
1164 if (ret) {
1165 dev_warn(&card->dev->dev, "pskb_expand_head failed.\n");
1166 solos_pop(vcc, skb);
1167 return ret;
1168 }
1169 }
1170
1171 header = (void *)skb_push(skb, sizeof(*header));
1172
1173 /* This does _not_ include the size of the header */
1174 header->size = cpu_to_le16(pktlen);
1175 header->vpi = cpu_to_le16(vcc->vpi);
1176 header->vci = cpu_to_le16(vcc->vci);
1177 header->type = cpu_to_le16(PKT_DATA);
1178
1179 fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, vcc);
1180
1181 return 0;
1182 }
1183
1184 static struct atmdev_ops fpga_ops = {
1185 .open = popen,
1186 .close = pclose,
1187 .ioctl = NULL,
1188 .getsockopt = NULL,
1189 .setsockopt = NULL,
1190 .send = psend,
1191 .send_oam = NULL,
1192 .phy_put = NULL,
1193 .phy_get = NULL,
1194 .change_qos = NULL,
1195 .proc_read = NULL,
1196 .owner = THIS_MODULE
1197 };
1198
1199 static int fpga_probe(struct pci_dev *dev, const struct pci_device_id *id)
1200 {
1201 int err;
1202 uint16_t fpga_ver;
1203 uint8_t major_ver, minor_ver;
1204 uint32_t data32;
1205 struct solos_card *card;
1206
1207 card = kzalloc(sizeof(*card), GFP_KERNEL);
1208 if (!card)
1209 return -ENOMEM;
1210
1211 card->dev = dev;
1212 init_waitqueue_head(&card->fw_wq);
1213 init_waitqueue_head(&card->param_wq);
1214
1215 err = pci_enable_device(dev);
1216 if (err) {
1217 dev_warn(&dev->dev, "Failed to enable PCI device\n");
1218 goto out;
1219 }
1220
1221 err = dma_set_mask_and_coherent(&dev->dev, DMA_BIT_MASK(32));
1222 if (err) {
1223 dev_warn(&dev->dev, "Failed to set 32-bit DMA mask\n");
1224 goto out;
1225 }
1226
1227 err = pci_request_regions(dev, "solos");
1228 if (err) {
1229 dev_warn(&dev->dev, "Failed to request regions\n");
1230 goto out;
1231 }
1232
1233 card->config_regs = pci_iomap(dev, 0, CONFIG_RAM_SIZE);
1234 if (!card->config_regs) {
1235 dev_warn(&dev->dev, "Failed to ioremap config registers\n");
1236 err = -ENOMEM;
1237 goto out_release_regions;
1238 }
1239 card->buffers = pci_iomap(dev, 1, DATA_RAM_SIZE);
1240 if (!card->buffers) {
1241 dev_warn(&dev->dev, "Failed to ioremap data buffers\n");
1242 err = -ENOMEM;
1243 goto out_unmap_config;
1244 }
1245
1246 if (reset) {
1247 iowrite32(1, card->config_regs + FPGA_MODE);
1248 data32 = ioread32(card->config_regs + FPGA_MODE);
1249
1250 iowrite32(0, card->config_regs + FPGA_MODE);
1251 data32 = ioread32(card->config_regs + FPGA_MODE);
1252 }
1253
1254 data32 = ioread32(card->config_regs + FPGA_VER);
1255 fpga_ver = (data32 & 0x0000FFFF);
1256 major_ver = ((data32 & 0xFF000000) >> 24);
1257 minor_ver = ((data32 & 0x00FF0000) >> 16);
1258 card->fpga_version = FPGA_VERSION(major_ver,minor_ver);
1259 if (card->fpga_version > LEGACY_BUFFERS)
1260 card->buffer_size = BUF_SIZE;
1261 else
1262 card->buffer_size = OLD_BUF_SIZE;
1263 dev_info(&dev->dev, "Solos FPGA Version %d.%02d svn-%d\n",
1264 major_ver, minor_ver, fpga_ver);
1265
1266 if (fpga_ver < 37 && (fpga_upgrade || firmware_upgrade ||
1267 db_fpga_upgrade || db_firmware_upgrade)) {
1268 dev_warn(&dev->dev,
1269 "FPGA too old; cannot upgrade flash. Use JTAG.\n");
1270 fpga_upgrade = firmware_upgrade = 0;
1271 db_fpga_upgrade = db_firmware_upgrade = 0;
1272 }
1273
1274 /* Stopped using Atmel flash after 0.03-38 */
1275 if (fpga_ver < 39)
1276 card->atmel_flash = 1;
1277 else
1278 card->atmel_flash = 0;
1279
1280 data32 = ioread32(card->config_regs + PORTS);
1281 card->nr_ports = (data32 & 0x000000FF);
1282
1283 if (card->fpga_version >= DMA_SUPPORTED) {
1284 pci_set_master(dev);
1285 card->using_dma = 1;
1286 if (1) { /* All known FPGA versions so far */
1287 card->dma_alignment = 3;
1288 card->dma_bounce = kmalloc(card->nr_ports * BUF_SIZE, GFP_KERNEL);
1289 if (!card->dma_bounce) {
1290 dev_warn(&card->dev->dev, "Failed to allocate DMA bounce buffers\n");
1291 err = -ENOMEM;
1292 /* Fallback to MMIO doesn't work */
1293 goto out_unmap_both;
1294 }
1295 }
1296 } else {
1297 card->using_dma = 0;
1298 /* Set RX empty flag for all ports */
1299 iowrite32(0xF0, card->config_regs + FLAGS_ADDR);
1300 }
1301
1302 pci_set_drvdata(dev, card);
1303
1304 tasklet_init(&card->tlet, solos_bh, (unsigned long)card);
1305 spin_lock_init(&card->tx_lock);
1306 spin_lock_init(&card->tx_queue_lock);
1307 spin_lock_init(&card->cli_queue_lock);
1308 spin_lock_init(&card->param_queue_lock);
1309 INIT_LIST_HEAD(&card->param_queue);
1310
1311 err = request_irq(dev->irq, solos_irq, IRQF_SHARED,
1312 "solos-pci", card);
1313 if (err) {
1314 dev_dbg(&card->dev->dev, "Failed to request interrupt IRQ: %d\n", dev->irq);
1315 goto out_unmap_both;
1316 }
1317
1318 iowrite32(1, card->config_regs + IRQ_EN_ADDR);
1319
1320 if (fpga_upgrade)
1321 flash_upgrade(card, 0);
1322
1323 if (firmware_upgrade)
1324 flash_upgrade(card, 1);
1325
1326 if (db_fpga_upgrade)
1327 flash_upgrade(card, 2);
1328
1329 if (db_firmware_upgrade)
1330 flash_upgrade(card, 3);
1331
1332 err = atm_init(card, &dev->dev);
1333 if (err)
1334 goto out_free_irq;
1335
1336 if (card->fpga_version >= DMA_SUPPORTED &&
1337 sysfs_create_group(&card->dev->dev.kobj, &gpio_attr_group))
1338 dev_err(&card->dev->dev, "Could not register parameter group for GPIOs\n");
1339
1340 return 0;
1341
1342 out_free_irq:
1343 iowrite32(0, card->config_regs + IRQ_EN_ADDR);
1344 free_irq(dev->irq, card);
1345 tasklet_kill(&card->tlet);
1346
1347 out_unmap_both:
1348 kfree(card->dma_bounce);
1349 pci_iounmap(dev, card->buffers);
1350 out_unmap_config:
1351 pci_iounmap(dev, card->config_regs);
1352 out_release_regions:
1353 pci_release_regions(dev);
1354 out:
1355 kfree(card);
1356 return err;
1357 }
1358
1359 static int atm_init(struct solos_card *card, struct device *parent)
1360 {
1361 int i;
1362
1363 for (i = 0; i < card->nr_ports; i++) {
1364 struct sk_buff *skb;
1365 struct pkt_hdr *header;
1366
1367 skb_queue_head_init(&card->tx_queue[i]);
1368 skb_queue_head_init(&card->cli_queue[i]);
1369
1370 card->atmdev[i] = atm_dev_register("solos-pci", parent, &fpga_ops, -1, NULL);
1371 if (!card->atmdev[i]) {
1372 dev_err(&card->dev->dev, "Could not register ATM device %d\n", i);
1373 atm_remove(card);
1374 return -ENODEV;
1375 }
1376 if (device_create_file(&card->atmdev[i]->class_dev, &dev_attr_console))
1377 dev_err(&card->dev->dev, "Could not register console for ATM device %d\n", i);
1378 if (sysfs_create_group(&card->atmdev[i]->class_dev.kobj, &solos_attr_group))
1379 dev_err(&card->dev->dev, "Could not register parameter group for ATM device %d\n", i);
1380
1381 dev_info(&card->dev->dev, "Registered ATM device %d\n", card->atmdev[i]->number);
1382
1383 card->atmdev[i]->ci_range.vpi_bits = 8;
1384 card->atmdev[i]->ci_range.vci_bits = 16;
1385 card->atmdev[i]->dev_data = card;
1386 card->atmdev[i]->phy_data = (void *)(unsigned long)i;
1387 atm_dev_signal_change(card->atmdev[i], ATM_PHY_SIG_FOUND);
1388
1389 skb = alloc_skb(sizeof(*header), GFP_KERNEL);
1390 if (!skb) {
1391 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in atm_init()\n");
1392 continue;
1393 }
1394
1395 header = (void *)skb_put(skb, sizeof(*header));
1396
1397 header->size = cpu_to_le16(0);
1398 header->vpi = cpu_to_le16(0);
1399 header->vci = cpu_to_le16(0);
1400 header->type = cpu_to_le16(PKT_STATUS);
1401
1402 fpga_queue(card, i, skb, NULL);
1403 }
1404 return 0;
1405 }
1406
1407 static void atm_remove(struct solos_card *card)
1408 {
1409 int i;
1410
1411 for (i = 0; i < card->nr_ports; i++) {
1412 if (card->atmdev[i]) {
1413 struct sk_buff *skb;
1414
1415 dev_info(&card->dev->dev, "Unregistering ATM device %d\n", card->atmdev[i]->number);
1416
1417 sysfs_remove_group(&card->atmdev[i]->class_dev.kobj, &solos_attr_group);
1418 atm_dev_deregister(card->atmdev[i]);
1419
1420 skb = card->rx_skb[i];
1421 if (skb) {
1422 dma_unmap_single(&card->dev->dev, SKB_CB(skb)->dma_addr,
1423 RX_DMA_SIZE, DMA_FROM_DEVICE);
1424 dev_kfree_skb(skb);
1425 }
1426 skb = card->tx_skb[i];
1427 if (skb) {
1428 dma_unmap_single(&card->dev->dev, SKB_CB(skb)->dma_addr,
1429 skb->len, DMA_TO_DEVICE);
1430 dev_kfree_skb(skb);
1431 }
1432 while ((skb = skb_dequeue(&card->tx_queue[i])))
1433 dev_kfree_skb(skb);
1434
1435 }
1436 }
1437 }
1438
1439 static void fpga_remove(struct pci_dev *dev)
1440 {
1441 struct solos_card *card = pci_get_drvdata(dev);
1442
1443 /* Disable IRQs */
1444 iowrite32(0, card->config_regs + IRQ_EN_ADDR);
1445
1446 /* Reset FPGA */
1447 iowrite32(1, card->config_regs + FPGA_MODE);
1448 (void)ioread32(card->config_regs + FPGA_MODE);
1449
1450 if (card->fpga_version >= DMA_SUPPORTED)
1451 sysfs_remove_group(&card->dev->dev.kobj, &gpio_attr_group);
1452
1453 atm_remove(card);
1454
1455 free_irq(dev->irq, card);
1456 tasklet_kill(&card->tlet);
1457
1458 kfree(card->dma_bounce);
1459
1460 /* Release device from reset */
1461 iowrite32(0, card->config_regs + FPGA_MODE);
1462 (void)ioread32(card->config_regs + FPGA_MODE);
1463
1464 pci_iounmap(dev, card->buffers);
1465 pci_iounmap(dev, card->config_regs);
1466
1467 pci_release_regions(dev);
1468 pci_disable_device(dev);
1469
1470 kfree(card);
1471 }
1472
1473 static struct pci_device_id fpga_pci_tbl[] = {
1474 { 0x10ee, 0x0300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 },
1475 { 0, }
1476 };
1477
1478 MODULE_DEVICE_TABLE(pci,fpga_pci_tbl);
1479
1480 static struct pci_driver fpga_driver = {
1481 .name = "solos",
1482 .id_table = fpga_pci_tbl,
1483 .probe = fpga_probe,
1484 .remove = fpga_remove,
1485 };
1486
1487
1488 static int __init solos_pci_init(void)
1489 {
1490 BUILD_BUG_ON(sizeof(struct solos_skb_cb) > sizeof(((struct sk_buff *)0)->cb));
1491
1492 printk(KERN_INFO "Solos PCI Driver Version %s\n", VERSION);
1493 return pci_register_driver(&fpga_driver);
1494 }
1495
1496 static void __exit solos_pci_exit(void)
1497 {
1498 pci_unregister_driver(&fpga_driver);
1499 printk(KERN_INFO "Solos PCI Driver %s Unloaded\n", VERSION);
1500 }
1501
1502 module_init(solos_pci_init);
1503 module_exit(solos_pci_exit);
Linux kernel - Deliverables
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