Commit | Line | Data |
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9c54004e DW |
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> | |
7c4015bd | 12 | * Treker Chen <treker@xrio.com> |
9c54004e DW |
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> | |
7c4015bd | 40 | #include <linux/firmware.h> |
01e2ffac DW |
41 | #include <linux/ctype.h> |
42 | #include <linux/swab.h> | |
5a0e3ad6 | 43 | #include <linux/slab.h> |
9c54004e | 44 | |
7c4015bd | 45 | #define VERSION "0.07" |
9c54004e DW |
46 | #define PTAG "solos-pci" |
47 | ||
48 | #define CONFIG_RAM_SIZE 128 | |
49 | #define FLAGS_ADDR 0x7C | |
50 | #define IRQ_EN_ADDR 0x78 | |
51 | #define FPGA_VER 0x74 | |
52 | #define IRQ_CLEAR 0x70 | |
7c4015bd SF |
53 | #define WRITE_FLASH 0x6C |
54 | #define PORTS 0x68 | |
55 | #define FLASH_BLOCK 0x64 | |
56 | #define FLASH_BUSY 0x60 | |
57 | #define FPGA_MODE 0x5C | |
58 | #define FLASH_MODE 0x58 | |
90937231 DW |
59 | #define TX_DMA_ADDR(port) (0x40 + (4 * (port))) |
60 | #define RX_DMA_ADDR(port) (0x30 + (4 * (port))) | |
9c54004e DW |
61 | |
62 | #define DATA_RAM_SIZE 32768 | |
4dbedf43 NW |
63 | #define BUF_SIZE 2048 |
64 | #define OLD_BUF_SIZE 4096 /* For FPGA versions <= 2*/ | |
7c4015bd SF |
65 | #define FPGA_PAGE 528 /* FPGA flash page size*/ |
66 | #define SOLOS_PAGE 512 /* Solos flash page size*/ | |
67 | #define FPGA_BLOCK (FPGA_PAGE * 8) /* FPGA flash block size*/ | |
68 | #define SOLOS_BLOCK (SOLOS_PAGE * 8) /* Solos flash block size*/ | |
9c54004e | 69 | |
4dbedf43 NW |
70 | #define RX_BUF(card, nr) ((card->buffers) + (nr)*(card->buffer_size)*2) |
71 | #define TX_BUF(card, nr) ((card->buffers) + (nr)*(card->buffer_size)*2 + (card->buffer_size)) | |
72 | #define FLASH_BUF ((card->buffers) + 4*(card->buffer_size)*2) | |
9c54004e | 73 | |
eaf83e39 DW |
74 | #define RX_DMA_SIZE 2048 |
75 | ||
4dbedf43 NW |
76 | #define FPGA_VERSION(a,b) (((a) << 8) + (b)) |
77 | #define LEGACY_BUFFERS 2 | |
78 | #define DMA_SUPPORTED 4 | |
79 | ||
cc3657e1 | 80 | static int reset = 0; |
9c54004e | 81 | static int atmdebug = 0; |
7c4015bd SF |
82 | static int firmware_upgrade = 0; |
83 | static int fpga_upgrade = 0; | |
4dbedf43 NW |
84 | static int db_firmware_upgrade = 0; |
85 | static int db_fpga_upgrade = 0; | |
9c54004e DW |
86 | |
87 | struct pkt_hdr { | |
88 | __le16 size; | |
89 | __le16 vpi; | |
90 | __le16 vci; | |
91 | __le16 type; | |
92 | }; | |
93 | ||
90937231 DW |
94 | struct solos_skb_cb { |
95 | struct atm_vcc *vcc; | |
96 | uint32_t dma_addr; | |
97 | }; | |
98 | ||
99 | ||
100 | #define SKB_CB(skb) ((struct solos_skb_cb *)skb->cb) | |
101 | ||
9c54004e DW |
102 | #define PKT_DATA 0 |
103 | #define PKT_COMMAND 1 | |
104 | #define PKT_POPEN 3 | |
105 | #define PKT_PCLOSE 4 | |
87ebb186 | 106 | #define PKT_STATUS 5 |
9c54004e DW |
107 | |
108 | struct solos_card { | |
109 | void __iomem *config_regs; | |
110 | void __iomem *buffers; | |
111 | int nr_ports; | |
f69e4170 | 112 | int tx_mask; |
9c54004e DW |
113 | struct pci_dev *dev; |
114 | struct atm_dev *atmdev[4]; | |
115 | struct tasklet_struct tlet; | |
116 | spinlock_t tx_lock; | |
117 | spinlock_t tx_queue_lock; | |
118 | spinlock_t cli_queue_lock; | |
01e2ffac DW |
119 | spinlock_t param_queue_lock; |
120 | struct list_head param_queue; | |
9c54004e DW |
121 | struct sk_buff_head tx_queue[4]; |
122 | struct sk_buff_head cli_queue[4]; | |
90937231 DW |
123 | struct sk_buff *tx_skb[4]; |
124 | struct sk_buff *rx_skb[4]; | |
01e2ffac | 125 | wait_queue_head_t param_wq; |
fa755b9f | 126 | wait_queue_head_t fw_wq; |
90937231 | 127 | int using_dma; |
4dbedf43 NW |
128 | int fpga_version; |
129 | int buffer_size; | |
9c54004e DW |
130 | }; |
131 | ||
01e2ffac DW |
132 | |
133 | struct solos_param { | |
134 | struct list_head list; | |
135 | pid_t pid; | |
136 | int port; | |
137 | struct sk_buff *response; | |
9c54004e DW |
138 | }; |
139 | ||
140 | #define SOLOS_CHAN(atmdev) ((int)(unsigned long)(atmdev)->phy_data) | |
141 | ||
142 | MODULE_AUTHOR("Traverse Technologies <support@traverse.com.au>"); | |
143 | MODULE_DESCRIPTION("Solos PCI driver"); | |
144 | MODULE_VERSION(VERSION); | |
145 | MODULE_LICENSE("GPL"); | |
9fca79d6 BH |
146 | MODULE_FIRMWARE("solos-FPGA.bin"); |
147 | MODULE_FIRMWARE("solos-Firmware.bin"); | |
148 | MODULE_FIRMWARE("solos-db-FPGA.bin"); | |
cc3657e1 | 149 | MODULE_PARM_DESC(reset, "Reset Solos chips on startup"); |
9c54004e | 150 | MODULE_PARM_DESC(atmdebug, "Print ATM data"); |
7c4015bd SF |
151 | MODULE_PARM_DESC(firmware_upgrade, "Initiate Solos firmware upgrade"); |
152 | MODULE_PARM_DESC(fpga_upgrade, "Initiate FPGA upgrade"); | |
4dbedf43 NW |
153 | MODULE_PARM_DESC(db_firmware_upgrade, "Initiate daughter board Solos firmware upgrade"); |
154 | MODULE_PARM_DESC(db_fpga_upgrade, "Initiate daughter board FPGA upgrade"); | |
cc3657e1 | 155 | module_param(reset, int, 0444); |
4306cad6 | 156 | module_param(atmdebug, int, 0644); |
7c4015bd SF |
157 | module_param(firmware_upgrade, int, 0444); |
158 | module_param(fpga_upgrade, int, 0444); | |
4dbedf43 NW |
159 | module_param(db_firmware_upgrade, int, 0444); |
160 | module_param(db_fpga_upgrade, int, 0444); | |
9c54004e DW |
161 | |
162 | static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb, | |
163 | struct atm_vcc *vcc); | |
35c2221b | 164 | static uint32_t fpga_tx(struct solos_card *); |
9c54004e DW |
165 | static irqreturn_t solos_irq(int irq, void *dev_id); |
166 | static struct atm_vcc* find_vcc(struct atm_dev *dev, short vpi, int vci); | |
167 | static int list_vccs(int vci); | |
d9ca676b | 168 | static int atm_init(struct solos_card *, struct device *); |
9c54004e DW |
169 | static void atm_remove(struct solos_card *); |
170 | static int send_command(struct solos_card *card, int dev, const char *buf, size_t size); | |
171 | static void solos_bh(unsigned long); | |
172 | static int print_buffer(struct sk_buff *buf); | |
173 | ||
174 | static inline void solos_pop(struct atm_vcc *vcc, struct sk_buff *skb) | |
175 | { | |
176 | if (vcc->pop) | |
177 | vcc->pop(vcc, skb); | |
178 | else | |
179 | dev_kfree_skb_any(skb); | |
180 | } | |
181 | ||
01e2ffac DW |
182 | static ssize_t solos_param_show(struct device *dev, struct device_attribute *attr, |
183 | char *buf) | |
184 | { | |
185 | struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev); | |
186 | struct solos_card *card = atmdev->dev_data; | |
187 | struct solos_param prm; | |
188 | struct sk_buff *skb; | |
189 | struct pkt_hdr *header; | |
190 | int buflen; | |
191 | ||
192 | buflen = strlen(attr->attr.name) + 10; | |
193 | ||
3456b221 | 194 | skb = alloc_skb(sizeof(*header) + buflen, GFP_KERNEL); |
01e2ffac DW |
195 | if (!skb) { |
196 | dev_warn(&card->dev->dev, "Failed to allocate sk_buff in solos_param_show()\n"); | |
197 | return -ENOMEM; | |
198 | } | |
199 | ||
200 | header = (void *)skb_put(skb, sizeof(*header)); | |
201 | ||
202 | buflen = snprintf((void *)&header[1], buflen - 1, | |
203 | "L%05d\n%s\n", current->pid, attr->attr.name); | |
204 | skb_put(skb, buflen); | |
205 | ||
206 | header->size = cpu_to_le16(buflen); | |
207 | header->vpi = cpu_to_le16(0); | |
208 | header->vci = cpu_to_le16(0); | |
209 | header->type = cpu_to_le16(PKT_COMMAND); | |
210 | ||
211 | prm.pid = current->pid; | |
212 | prm.response = NULL; | |
213 | prm.port = SOLOS_CHAN(atmdev); | |
214 | ||
215 | spin_lock_irq(&card->param_queue_lock); | |
216 | list_add(&prm.list, &card->param_queue); | |
217 | spin_unlock_irq(&card->param_queue_lock); | |
218 | ||
219 | fpga_queue(card, prm.port, skb, NULL); | |
220 | ||
221 | wait_event_timeout(card->param_wq, prm.response, 5 * HZ); | |
222 | ||
223 | spin_lock_irq(&card->param_queue_lock); | |
224 | list_del(&prm.list); | |
225 | spin_unlock_irq(&card->param_queue_lock); | |
226 | ||
227 | if (!prm.response) | |
228 | return -EIO; | |
229 | ||
230 | buflen = prm.response->len; | |
231 | memcpy(buf, prm.response->data, buflen); | |
232 | kfree_skb(prm.response); | |
233 | ||
234 | return buflen; | |
235 | } | |
236 | ||
237 | static ssize_t solos_param_store(struct device *dev, struct device_attribute *attr, | |
238 | const char *buf, size_t count) | |
239 | { | |
240 | struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev); | |
241 | struct solos_card *card = atmdev->dev_data; | |
242 | struct solos_param prm; | |
243 | struct sk_buff *skb; | |
244 | struct pkt_hdr *header; | |
245 | int buflen; | |
246 | ssize_t ret; | |
247 | ||
248 | buflen = strlen(attr->attr.name) + 11 + count; | |
249 | ||
3456b221 | 250 | skb = alloc_skb(sizeof(*header) + buflen, GFP_KERNEL); |
01e2ffac DW |
251 | if (!skb) { |
252 | dev_warn(&card->dev->dev, "Failed to allocate sk_buff in solos_param_store()\n"); | |
253 | return -ENOMEM; | |
254 | } | |
255 | ||
256 | header = (void *)skb_put(skb, sizeof(*header)); | |
257 | ||
258 | buflen = snprintf((void *)&header[1], buflen - 1, | |
259 | "L%05d\n%s\n%s\n", current->pid, attr->attr.name, buf); | |
260 | ||
261 | skb_put(skb, buflen); | |
262 | header->size = cpu_to_le16(buflen); | |
263 | header->vpi = cpu_to_le16(0); | |
264 | header->vci = cpu_to_le16(0); | |
265 | header->type = cpu_to_le16(PKT_COMMAND); | |
266 | ||
267 | prm.pid = current->pid; | |
268 | prm.response = NULL; | |
269 | prm.port = SOLOS_CHAN(atmdev); | |
270 | ||
271 | spin_lock_irq(&card->param_queue_lock); | |
272 | list_add(&prm.list, &card->param_queue); | |
273 | spin_unlock_irq(&card->param_queue_lock); | |
274 | ||
275 | fpga_queue(card, prm.port, skb, NULL); | |
276 | ||
277 | wait_event_timeout(card->param_wq, prm.response, 5 * HZ); | |
278 | ||
279 | spin_lock_irq(&card->param_queue_lock); | |
280 | list_del(&prm.list); | |
281 | spin_unlock_irq(&card->param_queue_lock); | |
282 | ||
283 | skb = prm.response; | |
284 | ||
285 | if (!skb) | |
286 | return -EIO; | |
287 | ||
288 | buflen = skb->len; | |
289 | ||
290 | /* Sometimes it has a newline, sometimes it doesn't. */ | |
291 | if (skb->data[buflen - 1] == '\n') | |
292 | buflen--; | |
293 | ||
294 | if (buflen == 2 && !strncmp(skb->data, "OK", 2)) | |
295 | ret = count; | |
296 | else if (buflen == 5 && !strncmp(skb->data, "ERROR", 5)) | |
297 | ret = -EIO; | |
298 | else { | |
299 | /* We know we have enough space allocated for this; we allocated | |
300 | it ourselves */ | |
301 | skb->data[buflen] = 0; | |
302 | ||
303 | dev_warn(&card->dev->dev, "Unexpected parameter response: '%s'\n", | |
304 | skb->data); | |
305 | ret = -EIO; | |
306 | } | |
307 | kfree_skb(skb); | |
308 | ||
309 | return ret; | |
310 | } | |
311 | ||
87ebb186 DW |
312 | static char *next_string(struct sk_buff *skb) |
313 | { | |
314 | int i = 0; | |
315 | char *this = skb->data; | |
c6428e52 DW |
316 | |
317 | for (i = 0; i < skb->len; i++) { | |
87ebb186 DW |
318 | if (this[i] == '\n') { |
319 | this[i] = 0; | |
c6428e52 | 320 | skb_pull(skb, i + 1); |
87ebb186 DW |
321 | return this; |
322 | } | |
c6428e52 DW |
323 | if (!isprint(this[i])) |
324 | return NULL; | |
87ebb186 DW |
325 | } |
326 | return NULL; | |
327 | } | |
328 | ||
329 | /* | |
330 | * Status packet has fields separated by \n, starting with a version number | |
331 | * for the information therein. Fields are.... | |
332 | * | |
333 | * packet version | |
87ebb186 | 334 | * RxBitRate (version >= 1) |
f87b2ed2 | 335 | * TxBitRate (version >= 1) |
87ebb186 | 336 | * State (version >= 1) |
f87b2ed2 DW |
337 | * LocalSNRMargin (version >= 1) |
338 | * LocalLineAttn (version >= 1) | |
87ebb186 DW |
339 | */ |
340 | static int process_status(struct solos_card *card, int port, struct sk_buff *skb) | |
341 | { | |
f87b2ed2 DW |
342 | char *str, *end, *state_str, *snr, *attn; |
343 | int ver, rate_up, rate_down; | |
87ebb186 DW |
344 | |
345 | if (!card->atmdev[port]) | |
346 | return -ENODEV; | |
347 | ||
348 | str = next_string(skb); | |
349 | if (!str) | |
350 | return -EIO; | |
351 | ||
352 | ver = simple_strtol(str, NULL, 10); | |
353 | if (ver < 1) { | |
354 | dev_warn(&card->dev->dev, "Unexpected status interrupt version %d\n", | |
355 | ver); | |
356 | return -EIO; | |
357 | } | |
358 | ||
359 | str = next_string(skb); | |
c6428e52 DW |
360 | if (!str) |
361 | return -EIO; | |
95852f48 DW |
362 | if (!strcmp(str, "ERROR")) { |
363 | dev_dbg(&card->dev->dev, "Status packet indicated Solos error on port %d (starting up?)\n", | |
364 | port); | |
365 | return 0; | |
366 | } | |
367 | ||
f87b2ed2 | 368 | rate_down = simple_strtol(str, &end, 10); |
87ebb186 DW |
369 | if (*end) |
370 | return -EIO; | |
371 | ||
372 | str = next_string(skb); | |
c6428e52 DW |
373 | if (!str) |
374 | return -EIO; | |
f87b2ed2 | 375 | rate_up = simple_strtol(str, &end, 10); |
87ebb186 DW |
376 | if (*end) |
377 | return -EIO; | |
378 | ||
af780656 | 379 | state_str = next_string(skb); |
c6428e52 DW |
380 | if (!state_str) |
381 | return -EIO; | |
f87b2ed2 DW |
382 | |
383 | /* Anything but 'Showtime' is down */ | |
384 | if (strcmp(state_str, "Showtime")) { | |
49d49106 | 385 | atm_dev_signal_change(card->atmdev[port], ATM_PHY_SIG_LOST); |
f87b2ed2 DW |
386 | dev_info(&card->dev->dev, "Port %d: %s\n", port, state_str); |
387 | return 0; | |
1e615df6 | 388 | } |
87ebb186 | 389 | |
f87b2ed2 | 390 | snr = next_string(skb); |
6cf5767c | 391 | if (!snr) |
f87b2ed2 DW |
392 | return -EIO; |
393 | attn = next_string(skb); | |
394 | if (!attn) | |
395 | return -EIO; | |
396 | ||
397 | dev_info(&card->dev->dev, "Port %d: %s @%d/%d kb/s%s%s%s%s\n", | |
398 | port, state_str, rate_down/1000, rate_up/1000, | |
399 | snr[0]?", SNR ":"", snr, attn[0]?", Attn ":"", attn); | |
400 | ||
c6428e52 | 401 | card->atmdev[port]->link_rate = rate_down / 424; |
49d49106 | 402 | atm_dev_signal_change(card->atmdev[port], ATM_PHY_SIG_FOUND); |
87ebb186 | 403 | |
87ebb186 DW |
404 | return 0; |
405 | } | |
406 | ||
01e2ffac DW |
407 | static int process_command(struct solos_card *card, int port, struct sk_buff *skb) |
408 | { | |
409 | struct solos_param *prm; | |
410 | unsigned long flags; | |
411 | int cmdpid; | |
412 | int found = 0; | |
413 | ||
414 | if (skb->len < 7) | |
415 | return 0; | |
416 | ||
417 | if (skb->data[0] != 'L' || !isdigit(skb->data[1]) || | |
418 | !isdigit(skb->data[2]) || !isdigit(skb->data[3]) || | |
419 | !isdigit(skb->data[4]) || !isdigit(skb->data[5]) || | |
420 | skb->data[6] != '\n') | |
421 | return 0; | |
422 | ||
423 | cmdpid = simple_strtol(&skb->data[1], NULL, 10); | |
424 | ||
425 | spin_lock_irqsave(&card->param_queue_lock, flags); | |
426 | list_for_each_entry(prm, &card->param_queue, list) { | |
427 | if (prm->port == port && prm->pid == cmdpid) { | |
428 | prm->response = skb; | |
429 | skb_pull(skb, 7); | |
430 | wake_up(&card->param_wq); | |
431 | found = 1; | |
432 | break; | |
433 | } | |
434 | } | |
435 | spin_unlock_irqrestore(&card->param_queue_lock, flags); | |
436 | return found; | |
437 | } | |
438 | ||
9c54004e DW |
439 | static ssize_t console_show(struct device *dev, struct device_attribute *attr, |
440 | char *buf) | |
441 | { | |
442 | struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev); | |
443 | struct solos_card *card = atmdev->dev_data; | |
444 | struct sk_buff *skb; | |
f1ee89d5 | 445 | unsigned int len; |
9c54004e DW |
446 | |
447 | spin_lock(&card->cli_queue_lock); | |
448 | skb = skb_dequeue(&card->cli_queue[SOLOS_CHAN(atmdev)]); | |
449 | spin_unlock(&card->cli_queue_lock); | |
450 | if(skb == NULL) | |
451 | return sprintf(buf, "No data.\n"); | |
452 | ||
f1ee89d5 JS |
453 | len = skb->len; |
454 | memcpy(buf, skb->data, len); | |
455 | dev_dbg(&card->dev->dev, "len: %d\n", len); | |
9c54004e DW |
456 | |
457 | kfree_skb(skb); | |
f1ee89d5 | 458 | return len; |
9c54004e DW |
459 | } |
460 | ||
461 | static int send_command(struct solos_card *card, int dev, const char *buf, size_t size) | |
462 | { | |
463 | struct sk_buff *skb; | |
464 | struct pkt_hdr *header; | |
465 | ||
9c54004e DW |
466 | if (size > (BUF_SIZE - sizeof(*header))) { |
467 | dev_dbg(&card->dev->dev, "Command is too big. Dropping request\n"); | |
468 | return 0; | |
469 | } | |
470 | skb = alloc_skb(size + sizeof(*header), GFP_ATOMIC); | |
471 | if (!skb) { | |
472 | dev_warn(&card->dev->dev, "Failed to allocate sk_buff in send_command()\n"); | |
473 | return 0; | |
474 | } | |
475 | ||
476 | header = (void *)skb_put(skb, sizeof(*header)); | |
477 | ||
478 | header->size = cpu_to_le16(size); | |
479 | header->vpi = cpu_to_le16(0); | |
480 | header->vci = cpu_to_le16(0); | |
481 | header->type = cpu_to_le16(PKT_COMMAND); | |
482 | ||
483 | memcpy(skb_put(skb, size), buf, size); | |
484 | ||
485 | fpga_queue(card, dev, skb, NULL); | |
486 | ||
487 | return 0; | |
488 | } | |
489 | ||
490 | static ssize_t console_store(struct device *dev, struct device_attribute *attr, | |
491 | const char *buf, size_t count) | |
492 | { | |
493 | struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev); | |
494 | struct solos_card *card = atmdev->dev_data; | |
495 | int err; | |
496 | ||
497 | err = send_command(card, SOLOS_CHAN(atmdev), buf, count); | |
498 | ||
499 | return err?:count; | |
500 | } | |
501 | ||
502 | static DEVICE_ATTR(console, 0644, console_show, console_store); | |
503 | ||
d057f0a4 DW |
504 | |
505 | #define SOLOS_ATTR_RO(x) static DEVICE_ATTR(x, 0444, solos_param_show, NULL); | |
506 | #define SOLOS_ATTR_RW(x) static DEVICE_ATTR(x, 0644, solos_param_show, solos_param_store); | |
507 | ||
508 | #include "solos-attrlist.c" | |
509 | ||
510 | #undef SOLOS_ATTR_RO | |
511 | #undef SOLOS_ATTR_RW | |
512 | ||
513 | #define SOLOS_ATTR_RO(x) &dev_attr_##x.attr, | |
514 | #define SOLOS_ATTR_RW(x) &dev_attr_##x.attr, | |
515 | ||
516 | static struct attribute *solos_attrs[] = { | |
517 | #include "solos-attrlist.c" | |
518 | NULL | |
519 | }; | |
520 | ||
521 | static struct attribute_group solos_attr_group = { | |
522 | .attrs = solos_attrs, | |
523 | .name = "parameters", | |
524 | }; | |
9c54004e | 525 | |
fa755b9f DW |
526 | static int flash_upgrade(struct solos_card *card, int chip) |
527 | { | |
528 | const struct firmware *fw; | |
529 | const char *fw_name; | |
7c4015bd SF |
530 | int blocksize = 0; |
531 | int numblocks = 0; | |
fa755b9f DW |
532 | int offset; |
533 | ||
7adcdb4c AM |
534 | switch (chip) { |
535 | case 0: | |
fa755b9f | 536 | fw_name = "solos-FPGA.bin"; |
7c4015bd | 537 | blocksize = FPGA_BLOCK; |
7adcdb4c AM |
538 | break; |
539 | case 1: | |
fa755b9f | 540 | fw_name = "solos-Firmware.bin"; |
7c4015bd | 541 | blocksize = SOLOS_BLOCK; |
7adcdb4c AM |
542 | break; |
543 | case 2: | |
4dbedf43 NW |
544 | if (card->fpga_version > LEGACY_BUFFERS){ |
545 | fw_name = "solos-db-FPGA.bin"; | |
546 | blocksize = FPGA_BLOCK; | |
547 | } else { | |
7adcdb4c AM |
548 | dev_info(&card->dev->dev, "FPGA version doesn't support" |
549 | " daughter board upgrades\n"); | |
4dbedf43 NW |
550 | return -EPERM; |
551 | } | |
7adcdb4c AM |
552 | break; |
553 | case 3: | |
4dbedf43 NW |
554 | if (card->fpga_version > LEGACY_BUFFERS){ |
555 | fw_name = "solos-Firmware.bin"; | |
556 | blocksize = SOLOS_BLOCK; | |
557 | } else { | |
7adcdb4c AM |
558 | dev_info(&card->dev->dev, "FPGA version doesn't support" |
559 | " daughter board upgrades\n"); | |
560 | return -EPERM; | |
4dbedf43 | 561 | } |
7adcdb4c AM |
562 | break; |
563 | default: | |
564 | return -ENODEV; | |
4dbedf43 | 565 | } |
fa755b9f DW |
566 | |
567 | if (request_firmware(&fw, fw_name, &card->dev->dev)) | |
568 | return -ENOENT; | |
569 | ||
570 | dev_info(&card->dev->dev, "Flash upgrade starting\n"); | |
571 | ||
572 | numblocks = fw->size / blocksize; | |
573 | dev_info(&card->dev->dev, "Firmware size: %zd\n", fw->size); | |
7c4015bd SF |
574 | dev_info(&card->dev->dev, "Number of blocks: %d\n", numblocks); |
575 | ||
7c4015bd SF |
576 | dev_info(&card->dev->dev, "Changing FPGA to Update mode\n"); |
577 | iowrite32(1, card->config_regs + FPGA_MODE); | |
06091ed6 | 578 | (void) ioread32(card->config_regs + FPGA_MODE); |
7c4015bd | 579 | |
fa755b9f | 580 | /* Set mode to Chip Erase */ |
4dbedf43 NW |
581 | if(chip == 0 || chip == 2) |
582 | dev_info(&card->dev->dev, "Set FPGA Flash mode to FPGA Chip Erase\n"); | |
583 | if(chip == 1 || chip == 3) | |
584 | dev_info(&card->dev->dev, "Set FPGA Flash mode to Solos Chip Erase\n"); | |
fa755b9f | 585 | iowrite32((chip * 2), card->config_regs + FLASH_MODE); |
7c4015bd | 586 | |
7c4015bd | 587 | |
fa755b9f DW |
588 | iowrite32(1, card->config_regs + WRITE_FLASH); |
589 | wait_event(card->fw_wq, !ioread32(card->config_regs + FLASH_BUSY)); | |
590 | ||
591 | for (offset = 0; offset < fw->size; offset += blocksize) { | |
592 | int i; | |
593 | ||
594 | /* Clear write flag */ | |
7c4015bd | 595 | iowrite32(0, card->config_regs + WRITE_FLASH); |
7c4015bd | 596 | |
fa755b9f DW |
597 | /* Set mode to Block Write */ |
598 | /* dev_info(&card->dev->dev, "Set FPGA Flash mode to Block Write\n"); */ | |
599 | iowrite32(((chip * 2) + 1), card->config_regs + FLASH_MODE); | |
600 | ||
601 | /* Copy block to buffer, swapping each 16 bits */ | |
602 | for(i = 0; i < blocksize; i += 4) { | |
603 | uint32_t word = swahb32p((uint32_t *)(fw->data + offset + i)); | |
4dbedf43 NW |
604 | if(card->fpga_version > LEGACY_BUFFERS) |
605 | iowrite32(word, FLASH_BUF + i); | |
606 | else | |
607 | iowrite32(word, RX_BUF(card, 3) + i); | |
7c4015bd | 608 | } |
fa755b9f DW |
609 | |
610 | /* Specify block number and then trigger flash write */ | |
611 | iowrite32(offset / blocksize, card->config_regs + FLASH_BLOCK); | |
612 | iowrite32(1, card->config_regs + WRITE_FLASH); | |
613 | wait_event(card->fw_wq, !ioread32(card->config_regs + FLASH_BUSY)); | |
7c4015bd SF |
614 | } |
615 | ||
fa755b9f DW |
616 | release_firmware(fw); |
617 | iowrite32(0, card->config_regs + WRITE_FLASH); | |
618 | iowrite32(0, card->config_regs + FPGA_MODE); | |
619 | iowrite32(0, card->config_regs + FLASH_MODE); | |
620 | dev_info(&card->dev->dev, "Returning FPGA to Data mode\n"); | |
621 | return 0; | |
7c4015bd SF |
622 | } |
623 | ||
9c54004e DW |
624 | static irqreturn_t solos_irq(int irq, void *dev_id) |
625 | { | |
626 | struct solos_card *card = dev_id; | |
627 | int handled = 1; | |
628 | ||
9c54004e | 629 | iowrite32(0, card->config_regs + IRQ_CLEAR); |
9c54004e | 630 | |
35c2221b | 631 | /* If we're up and running, just kick the tasklet to process TX/RX */ |
fa755b9f | 632 | if (card->atmdev[0]) |
9c54004e | 633 | tasklet_schedule(&card->tlet); |
fa755b9f DW |
634 | else |
635 | wake_up(&card->fw_wq); | |
9c54004e | 636 | |
9c54004e DW |
637 | return IRQ_RETVAL(handled); |
638 | } | |
639 | ||
640 | void solos_bh(unsigned long card_arg) | |
641 | { | |
642 | struct solos_card *card = (void *)card_arg; | |
9c54004e | 643 | uint32_t card_flags; |
9c54004e | 644 | uint32_t rx_done = 0; |
35c2221b | 645 | int port; |
9c54004e | 646 | |
35c2221b DW |
647 | /* |
648 | * Since fpga_tx() is going to need to read the flags under its lock, | |
649 | * it can return them to us so that we don't have to hit PCI MMIO | |
650 | * again for the same information | |
651 | */ | |
652 | card_flags = fpga_tx(card); | |
9c54004e DW |
653 | |
654 | for (port = 0; port < card->nr_ports; port++) { | |
655 | if (card_flags & (0x10 << port)) { | |
90937231 | 656 | struct pkt_hdr _hdr, *header; |
9c54004e DW |
657 | struct sk_buff *skb; |
658 | struct atm_vcc *vcc; | |
659 | int size; | |
660 | ||
90937231 DW |
661 | if (card->using_dma) { |
662 | skb = card->rx_skb[port]; | |
eaf83e39 | 663 | card->rx_skb[port] = NULL; |
9c54004e | 664 | |
eaf83e39 DW |
665 | pci_unmap_single(card->dev, SKB_CB(skb)->dma_addr, |
666 | RX_DMA_SIZE, PCI_DMA_FROMDEVICE); | |
9c54004e | 667 | |
90937231 DW |
668 | header = (void *)skb->data; |
669 | size = le16_to_cpu(header->size); | |
670 | skb_put(skb, size + sizeof(*header)); | |
671 | skb_pull(skb, sizeof(*header)); | |
672 | } else { | |
673 | header = &_hdr; | |
9c54004e | 674 | |
90937231 | 675 | rx_done |= 0x10 << port; |
9c54004e | 676 | |
90937231 | 677 | memcpy_fromio(header, RX_BUF(card, port), sizeof(*header)); |
9c54004e | 678 | |
90937231 | 679 | size = le16_to_cpu(header->size); |
78f857f2 NW |
680 | if (size > (card->buffer_size - sizeof(*header))){ |
681 | dev_warn(&card->dev->dev, "Invalid buffer size\n"); | |
682 | continue; | |
683 | } | |
9c54004e | 684 | |
90937231 DW |
685 | skb = alloc_skb(size + 1, GFP_ATOMIC); |
686 | if (!skb) { | |
687 | if (net_ratelimit()) | |
688 | dev_warn(&card->dev->dev, "Failed to allocate sk_buff for RX\n"); | |
689 | continue; | |
690 | } | |
9c54004e | 691 | |
90937231 DW |
692 | memcpy_fromio(skb_put(skb, size), |
693 | RX_BUF(card, port) + sizeof(*header), | |
694 | size); | |
695 | } | |
9c54004e | 696 | if (atmdebug) { |
18b429e7 | 697 | dev_info(&card->dev->dev, "Received: port %d\n", port); |
9c54004e | 698 | dev_info(&card->dev->dev, "size: %d VPI: %d VCI: %d\n", |
90937231 DW |
699 | size, le16_to_cpu(header->vpi), |
700 | le16_to_cpu(header->vci)); | |
9c54004e DW |
701 | print_buffer(skb); |
702 | } | |
703 | ||
90937231 | 704 | switch (le16_to_cpu(header->type)) { |
9c54004e | 705 | case PKT_DATA: |
90937231 DW |
706 | vcc = find_vcc(card->atmdev[port], le16_to_cpu(header->vpi), |
707 | le16_to_cpu(header->vci)); | |
9c54004e DW |
708 | if (!vcc) { |
709 | if (net_ratelimit()) | |
1e19e658 PP |
710 | dev_warn(&card->dev->dev, "Received packet for unknown VPI.VCI %d.%d on port %d\n", |
711 | le16_to_cpu(header->vpi), le16_to_cpu(header->vci), | |
9c54004e DW |
712 | port); |
713 | continue; | |
714 | } | |
715 | atm_charge(vcc, skb->truesize); | |
716 | vcc->push(vcc, skb); | |
717 | atomic_inc(&vcc->stats->rx); | |
718 | break; | |
719 | ||
87ebb186 | 720 | case PKT_STATUS: |
95852f48 DW |
721 | if (process_status(card, port, skb) && |
722 | net_ratelimit()) { | |
723 | dev_warn(&card->dev->dev, "Bad status packet of %d bytes on port %d:\n", skb->len, port); | |
724 | print_buffer(skb); | |
725 | } | |
eaf83e39 | 726 | dev_kfree_skb_any(skb); |
87ebb186 DW |
727 | break; |
728 | ||
9c54004e DW |
729 | case PKT_COMMAND: |
730 | default: /* FIXME: Not really, surely? */ | |
01e2ffac DW |
731 | if (process_command(card, port, skb)) |
732 | break; | |
9c54004e DW |
733 | spin_lock(&card->cli_queue_lock); |
734 | if (skb_queue_len(&card->cli_queue[port]) > 10) { | |
735 | if (net_ratelimit()) | |
736 | dev_warn(&card->dev->dev, "Dropping console response on port %d\n", | |
737 | port); | |
eaf83e39 | 738 | dev_kfree_skb_any(skb); |
9c54004e DW |
739 | } else |
740 | skb_queue_tail(&card->cli_queue[port], skb); | |
741 | spin_unlock(&card->cli_queue_lock); | |
742 | break; | |
743 | } | |
744 | } | |
eaf83e39 DW |
745 | /* Allocate RX skbs for any ports which need them */ |
746 | if (card->using_dma && card->atmdev[port] && | |
747 | !card->rx_skb[port]) { | |
748 | struct sk_buff *skb = alloc_skb(RX_DMA_SIZE, GFP_ATOMIC); | |
749 | if (skb) { | |
750 | SKB_CB(skb)->dma_addr = | |
751 | pci_map_single(card->dev, skb->data, | |
752 | RX_DMA_SIZE, PCI_DMA_FROMDEVICE); | |
753 | iowrite32(SKB_CB(skb)->dma_addr, | |
754 | card->config_regs + RX_DMA_ADDR(port)); | |
755 | card->rx_skb[port] = skb; | |
756 | } else { | |
757 | if (net_ratelimit()) | |
758 | dev_warn(&card->dev->dev, "Failed to allocate RX skb"); | |
759 | ||
760 | /* We'll have to try again later */ | |
761 | tasklet_schedule(&card->tlet); | |
762 | } | |
763 | } | |
9c54004e DW |
764 | } |
765 | if (rx_done) | |
766 | iowrite32(rx_done, card->config_regs + FLAGS_ADDR); | |
767 | ||
768 | return; | |
769 | } | |
770 | ||
771 | static struct atm_vcc *find_vcc(struct atm_dev *dev, short vpi, int vci) | |
772 | { | |
773 | struct hlist_head *head; | |
774 | struct atm_vcc *vcc = NULL; | |
775 | struct hlist_node *node; | |
776 | struct sock *s; | |
777 | ||
778 | read_lock(&vcc_sklist_lock); | |
779 | head = &vcc_hash[vci & (VCC_HTABLE_SIZE -1)]; | |
780 | sk_for_each(s, node, head) { | |
781 | vcc = atm_sk(s); | |
782 | if (vcc->dev == dev && vcc->vci == vci && | |
1f6ea6e5 DW |
783 | vcc->vpi == vpi && vcc->qos.rxtp.traffic_class != ATM_NONE && |
784 | test_bit(ATM_VF_READY, &vcc->flags)) | |
9c54004e DW |
785 | goto out; |
786 | } | |
787 | vcc = NULL; | |
788 | out: | |
789 | read_unlock(&vcc_sklist_lock); | |
790 | return vcc; | |
791 | } | |
792 | ||
793 | static int list_vccs(int vci) | |
794 | { | |
795 | struct hlist_head *head; | |
796 | struct atm_vcc *vcc; | |
797 | struct hlist_node *node; | |
798 | struct sock *s; | |
799 | int num_found = 0; | |
800 | int i; | |
801 | ||
802 | read_lock(&vcc_sklist_lock); | |
803 | if (vci != 0){ | |
804 | head = &vcc_hash[vci & (VCC_HTABLE_SIZE -1)]; | |
805 | sk_for_each(s, node, head) { | |
806 | num_found ++; | |
807 | vcc = atm_sk(s); | |
808 | printk(KERN_DEBUG "Device: %d Vpi: %d Vci: %d\n", | |
809 | vcc->dev->number, | |
810 | vcc->vpi, | |
811 | vcc->vci); | |
812 | } | |
813 | } else { | |
1e615df6 | 814 | for(i = 0; i < VCC_HTABLE_SIZE; i++){ |
9c54004e DW |
815 | head = &vcc_hash[i]; |
816 | sk_for_each(s, node, head) { | |
817 | num_found ++; | |
818 | vcc = atm_sk(s); | |
819 | printk(KERN_DEBUG "Device: %d Vpi: %d Vci: %d\n", | |
820 | vcc->dev->number, | |
821 | vcc->vpi, | |
822 | vcc->vci); | |
823 | } | |
824 | } | |
825 | } | |
826 | read_unlock(&vcc_sklist_lock); | |
827 | return num_found; | |
828 | } | |
829 | ||
830 | ||
831 | static int popen(struct atm_vcc *vcc) | |
832 | { | |
833 | struct solos_card *card = vcc->dev->dev_data; | |
834 | struct sk_buff *skb; | |
835 | struct pkt_hdr *header; | |
836 | ||
b28a4b9a DW |
837 | if (vcc->qos.aal != ATM_AAL5) { |
838 | dev_warn(&card->dev->dev, "Unsupported ATM type %d\n", | |
839 | vcc->qos.aal); | |
840 | return -EINVAL; | |
841 | } | |
842 | ||
9c54004e | 843 | skb = alloc_skb(sizeof(*header), GFP_ATOMIC); |
da1ab3e2 JJ |
844 | if (!skb) { |
845 | if (net_ratelimit()) | |
846 | dev_warn(&card->dev->dev, "Failed to allocate sk_buff in popen()\n"); | |
9c54004e DW |
847 | return -ENOMEM; |
848 | } | |
849 | header = (void *)skb_put(skb, sizeof(*header)); | |
850 | ||
b76811af | 851 | header->size = cpu_to_le16(0); |
9c54004e DW |
852 | header->vpi = cpu_to_le16(vcc->vpi); |
853 | header->vci = cpu_to_le16(vcc->vci); | |
854 | header->type = cpu_to_le16(PKT_POPEN); | |
855 | ||
856 | fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, NULL); | |
857 | ||
bdc54625 | 858 | set_bit(ATM_VF_ADDR, &vcc->flags); |
9c54004e DW |
859 | set_bit(ATM_VF_READY, &vcc->flags); |
860 | list_vccs(0); | |
861 | ||
9c54004e DW |
862 | |
863 | return 0; | |
864 | } | |
865 | ||
866 | static void pclose(struct atm_vcc *vcc) | |
867 | { | |
868 | struct solos_card *card = vcc->dev->dev_data; | |
869 | struct sk_buff *skb; | |
870 | struct pkt_hdr *header; | |
871 | ||
872 | skb = alloc_skb(sizeof(*header), GFP_ATOMIC); | |
873 | if (!skb) { | |
874 | dev_warn(&card->dev->dev, "Failed to allocate sk_buff in pclose()\n"); | |
875 | return; | |
876 | } | |
877 | header = (void *)skb_put(skb, sizeof(*header)); | |
878 | ||
b76811af | 879 | header->size = cpu_to_le16(0); |
9c54004e DW |
880 | header->vpi = cpu_to_le16(vcc->vpi); |
881 | header->vci = cpu_to_le16(vcc->vci); | |
882 | header->type = cpu_to_le16(PKT_PCLOSE); | |
883 | ||
884 | fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, NULL); | |
885 | ||
9c54004e DW |
886 | clear_bit(ATM_VF_ADDR, &vcc->flags); |
887 | clear_bit(ATM_VF_READY, &vcc->flags); | |
888 | ||
1f6ea6e5 DW |
889 | /* Hold up vcc_destroy_socket() (our caller) until solos_bh() in the |
890 | tasklet has finished processing any incoming packets (and, more to | |
891 | the point, using the vcc pointer). */ | |
892 | tasklet_unlock_wait(&card->tlet); | |
9c54004e DW |
893 | return; |
894 | } | |
895 | ||
896 | static int print_buffer(struct sk_buff *buf) | |
897 | { | |
898 | int len,i; | |
899 | char msg[500]; | |
900 | char item[10]; | |
901 | ||
902 | len = buf->len; | |
903 | for (i = 0; i < len; i++){ | |
904 | if(i % 8 == 0) | |
905 | sprintf(msg, "%02X: ", i); | |
906 | ||
907 | sprintf(item,"%02X ",*(buf->data + i)); | |
908 | strcat(msg, item); | |
909 | if(i % 8 == 7) { | |
910 | sprintf(item, "\n"); | |
911 | strcat(msg, item); | |
912 | printk(KERN_DEBUG "%s", msg); | |
913 | } | |
914 | } | |
915 | if (i % 8 != 0) { | |
916 | sprintf(item, "\n"); | |
917 | strcat(msg, item); | |
918 | printk(KERN_DEBUG "%s", msg); | |
919 | } | |
920 | printk(KERN_DEBUG "\n"); | |
921 | ||
922 | return 0; | |
923 | } | |
924 | ||
925 | static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb, | |
926 | struct atm_vcc *vcc) | |
927 | { | |
928 | int old_len; | |
f69e4170 | 929 | unsigned long flags; |
9c54004e | 930 | |
90937231 | 931 | SKB_CB(skb)->vcc = vcc; |
9c54004e | 932 | |
f69e4170 | 933 | spin_lock_irqsave(&card->tx_queue_lock, flags); |
9c54004e DW |
934 | old_len = skb_queue_len(&card->tx_queue[port]); |
935 | skb_queue_tail(&card->tx_queue[port], skb); | |
35c2221b | 936 | if (!old_len) |
f69e4170 | 937 | card->tx_mask |= (1 << port); |
f69e4170 | 938 | spin_unlock_irqrestore(&card->tx_queue_lock, flags); |
9c54004e | 939 | |
f69e4170 DW |
940 | /* Theoretically we could just schedule the tasklet here, but |
941 | that introduces latency we don't want -- it's noticeable */ | |
9c54004e DW |
942 | if (!old_len) |
943 | fpga_tx(card); | |
944 | } | |
945 | ||
35c2221b | 946 | static uint32_t fpga_tx(struct solos_card *card) |
9c54004e | 947 | { |
35c2221b | 948 | uint32_t tx_pending, card_flags; |
9c54004e DW |
949 | uint32_t tx_started = 0; |
950 | struct sk_buff *skb; | |
951 | struct atm_vcc *vcc; | |
952 | unsigned char port; | |
953 | unsigned long flags; | |
954 | ||
955 | spin_lock_irqsave(&card->tx_lock, flags); | |
35c2221b DW |
956 | |
957 | card_flags = ioread32(card->config_regs + FLAGS_ADDR); | |
958 | /* | |
959 | * The queue lock is required for _writing_ to tx_mask, but we're | |
960 | * OK to read it here without locking. The only potential update | |
961 | * that we could race with is in fpga_queue() where it sets a bit | |
962 | * for a new port... but it's going to call this function again if | |
963 | * it's doing that, anyway. | |
964 | */ | |
965 | tx_pending = card->tx_mask & ~card_flags; | |
966 | ||
967 | for (port = 0; tx_pending; tx_pending >>= 1, port++) { | |
968 | if (tx_pending & 1) { | |
eaf83e39 | 969 | struct sk_buff *oldskb = card->tx_skb[port]; |
eaf83e39 DW |
970 | if (oldskb) |
971 | pci_unmap_single(card->dev, SKB_CB(oldskb)->dma_addr, | |
972 | oldskb->len, PCI_DMA_TODEVICE); | |
9c54004e DW |
973 | |
974 | spin_lock(&card->tx_queue_lock); | |
975 | skb = skb_dequeue(&card->tx_queue[port]); | |
f69e4170 DW |
976 | if (!skb) |
977 | card->tx_mask &= ~(1 << port); | |
9c54004e DW |
978 | spin_unlock(&card->tx_queue_lock); |
979 | ||
eaf83e39 DW |
980 | if (skb && !card->using_dma) { |
981 | memcpy_toio(TX_BUF(card, port), skb->data, skb->len); | |
bdc54625 | 982 | tx_started |= 1 << port; |
eaf83e39 DW |
983 | oldskb = skb; /* We're done with this skb already */ |
984 | } else if (skb && card->using_dma) { | |
985 | SKB_CB(skb)->dma_addr = pci_map_single(card->dev, skb->data, | |
986 | skb->len, PCI_DMA_TODEVICE); | |
b4bd8ad9 | 987 | card->tx_skb[port] = skb; |
eaf83e39 DW |
988 | iowrite32(SKB_CB(skb)->dma_addr, |
989 | card->config_regs + TX_DMA_ADDR(port)); | |
990 | } | |
991 | ||
992 | if (!oldskb) | |
9c54004e DW |
993 | continue; |
994 | ||
eaf83e39 | 995 | /* Clean up and free oldskb now it's gone */ |
9c54004e | 996 | if (atmdebug) { |
18b429e7 PP |
997 | struct pkt_hdr *header = (void *)oldskb->data; |
998 | int size = le16_to_cpu(header->size); | |
999 | ||
1000 | skb_pull(oldskb, sizeof(*header)); | |
9c54004e DW |
1001 | dev_info(&card->dev->dev, "Transmitted: port %d\n", |
1002 | port); | |
18b429e7 PP |
1003 | dev_info(&card->dev->dev, "size: %d VPI: %d VCI: %d\n", |
1004 | size, le16_to_cpu(header->vpi), | |
1005 | le16_to_cpu(header->vci)); | |
eaf83e39 | 1006 | print_buffer(oldskb); |
9c54004e | 1007 | } |
9c54004e | 1008 | |
eaf83e39 | 1009 | vcc = SKB_CB(oldskb)->vcc; |
9c54004e DW |
1010 | |
1011 | if (vcc) { | |
1012 | atomic_inc(&vcc->stats->tx); | |
eaf83e39 | 1013 | solos_pop(vcc, oldskb); |
9c54004e | 1014 | } else |
eaf83e39 | 1015 | dev_kfree_skb_irq(oldskb); |
9c54004e | 1016 | |
9c54004e DW |
1017 | } |
1018 | } | |
bdc54625 | 1019 | /* For non-DMA TX, write the 'TX start' bit for all four ports simultaneously */ |
9c54004e DW |
1020 | if (tx_started) |
1021 | iowrite32(tx_started, card->config_regs + FLAGS_ADDR); | |
1022 | ||
1023 | spin_unlock_irqrestore(&card->tx_lock, flags); | |
35c2221b | 1024 | return card_flags; |
9c54004e DW |
1025 | } |
1026 | ||
1027 | static int psend(struct atm_vcc *vcc, struct sk_buff *skb) | |
1028 | { | |
1029 | struct solos_card *card = vcc->dev->dev_data; | |
9c54004e | 1030 | struct pkt_hdr *header; |
b76811af | 1031 | int pktlen; |
9c54004e | 1032 | |
b76811af DW |
1033 | pktlen = skb->len; |
1034 | if (pktlen > (BUF_SIZE - sizeof(*header))) { | |
9c54004e DW |
1035 | dev_warn(&card->dev->dev, "Length of PDU is too large. Dropping PDU.\n"); |
1036 | solos_pop(vcc, skb); | |
1037 | return 0; | |
1038 | } | |
1039 | ||
1040 | if (!skb_clone_writable(skb, sizeof(*header))) { | |
1041 | int expand_by = 0; | |
1042 | int ret; | |
1043 | ||
1044 | if (skb_headroom(skb) < sizeof(*header)) | |
1045 | expand_by = sizeof(*header) - skb_headroom(skb); | |
1046 | ||
1047 | ret = pskb_expand_head(skb, expand_by, 0, GFP_ATOMIC); | |
1048 | if (ret) { | |
4306cad6 | 1049 | dev_warn(&card->dev->dev, "pskb_expand_head failed.\n"); |
9c54004e DW |
1050 | solos_pop(vcc, skb); |
1051 | return ret; | |
1052 | } | |
1053 | } | |
1054 | ||
1055 | header = (void *)skb_push(skb, sizeof(*header)); | |
1056 | ||
b76811af DW |
1057 | /* This does _not_ include the size of the header */ |
1058 | header->size = cpu_to_le16(pktlen); | |
9c54004e DW |
1059 | header->vpi = cpu_to_le16(vcc->vpi); |
1060 | header->vci = cpu_to_le16(vcc->vci); | |
1061 | header->type = cpu_to_le16(PKT_DATA); | |
1062 | ||
1063 | fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, vcc); | |
1064 | ||
1065 | return 0; | |
1066 | } | |
1067 | ||
1068 | static struct atmdev_ops fpga_ops = { | |
1069 | .open = popen, | |
1070 | .close = pclose, | |
1071 | .ioctl = NULL, | |
1072 | .getsockopt = NULL, | |
1073 | .setsockopt = NULL, | |
1074 | .send = psend, | |
1075 | .send_oam = NULL, | |
1076 | .phy_put = NULL, | |
1077 | .phy_get = NULL, | |
1078 | .change_qos = NULL, | |
1079 | .proc_read = NULL, | |
1080 | .owner = THIS_MODULE | |
1081 | }; | |
1082 | ||
1083 | static int fpga_probe(struct pci_dev *dev, const struct pci_device_id *id) | |
1084 | { | |
cd5549e0 | 1085 | int err; |
9c54004e DW |
1086 | uint16_t fpga_ver; |
1087 | uint8_t major_ver, minor_ver; | |
1088 | uint32_t data32; | |
1089 | struct solos_card *card; | |
1090 | ||
9c54004e DW |
1091 | card = kzalloc(sizeof(*card), GFP_KERNEL); |
1092 | if (!card) | |
1093 | return -ENOMEM; | |
1094 | ||
1095 | card->dev = dev; | |
fa755b9f | 1096 | init_waitqueue_head(&card->fw_wq); |
01e2ffac | 1097 | init_waitqueue_head(&card->param_wq); |
9c54004e DW |
1098 | |
1099 | err = pci_enable_device(dev); | |
1100 | if (err) { | |
1101 | dev_warn(&dev->dev, "Failed to enable PCI device\n"); | |
1102 | goto out; | |
1103 | } | |
1104 | ||
e930438c | 1105 | err = pci_set_dma_mask(dev, DMA_BIT_MASK(32)); |
90937231 DW |
1106 | if (err) { |
1107 | dev_warn(&dev->dev, "Failed to set 32-bit DMA mask\n"); | |
1108 | goto out; | |
1109 | } | |
1110 | ||
9c54004e DW |
1111 | err = pci_request_regions(dev, "solos"); |
1112 | if (err) { | |
1113 | dev_warn(&dev->dev, "Failed to request regions\n"); | |
1114 | goto out; | |
1115 | } | |
1116 | ||
1117 | card->config_regs = pci_iomap(dev, 0, CONFIG_RAM_SIZE); | |
1118 | if (!card->config_regs) { | |
1119 | dev_warn(&dev->dev, "Failed to ioremap config registers\n"); | |
1120 | goto out_release_regions; | |
1121 | } | |
1122 | card->buffers = pci_iomap(dev, 1, DATA_RAM_SIZE); | |
1123 | if (!card->buffers) { | |
1124 | dev_warn(&dev->dev, "Failed to ioremap data buffers\n"); | |
1125 | goto out_unmap_config; | |
1126 | } | |
1127 | ||
cc3657e1 DW |
1128 | if (reset) { |
1129 | iowrite32(1, card->config_regs + FPGA_MODE); | |
1130 | data32 = ioread32(card->config_regs + FPGA_MODE); | |
9c54004e | 1131 | |
cc3657e1 DW |
1132 | iowrite32(0, card->config_regs + FPGA_MODE); |
1133 | data32 = ioread32(card->config_regs + FPGA_MODE); | |
1134 | } | |
9c54004e DW |
1135 | |
1136 | data32 = ioread32(card->config_regs + FPGA_VER); | |
1137 | fpga_ver = (data32 & 0x0000FFFF); | |
1138 | major_ver = ((data32 & 0xFF000000) >> 24); | |
1139 | minor_ver = ((data32 & 0x00FF0000) >> 16); | |
4dbedf43 NW |
1140 | card->fpga_version = FPGA_VERSION(major_ver,minor_ver); |
1141 | if (card->fpga_version > LEGACY_BUFFERS) | |
1142 | card->buffer_size = BUF_SIZE; | |
1143 | else | |
1144 | card->buffer_size = OLD_BUF_SIZE; | |
9c54004e DW |
1145 | dev_info(&dev->dev, "Solos FPGA Version %d.%02d svn-%d\n", |
1146 | major_ver, minor_ver, fpga_ver); | |
1147 | ||
3ce1227c DW |
1148 | if (fpga_ver < 37 && (fpga_upgrade || firmware_upgrade || |
1149 | db_fpga_upgrade || db_firmware_upgrade)) { | |
1150 | dev_warn(&dev->dev, | |
1151 | "FPGA too old; cannot upgrade flash. Use JTAG.\n"); | |
1152 | fpga_upgrade = firmware_upgrade = 0; | |
1153 | db_fpga_upgrade = db_firmware_upgrade = 0; | |
1154 | } | |
1155 | ||
b4bd8ad9 DW |
1156 | if (card->fpga_version >= DMA_SUPPORTED) { |
1157 | pci_set_master(dev); | |
90937231 | 1158 | card->using_dma = 1; |
4dbedf43 NW |
1159 | } else { |
1160 | card->using_dma = 0; | |
eab50f73 DW |
1161 | /* Set RX empty flag for all ports */ |
1162 | iowrite32(0xF0, card->config_regs + FLAGS_ADDR); | |
1163 | } | |
9c54004e | 1164 | |
0fc36aa5 NW |
1165 | data32 = ioread32(card->config_regs + PORTS); |
1166 | card->nr_ports = (data32 & 0x000000FF); | |
9c54004e DW |
1167 | |
1168 | pci_set_drvdata(dev, card); | |
fa755b9f | 1169 | |
9c54004e DW |
1170 | tasklet_init(&card->tlet, solos_bh, (unsigned long)card); |
1171 | spin_lock_init(&card->tx_lock); | |
1172 | spin_lock_init(&card->tx_queue_lock); | |
1173 | spin_lock_init(&card->cli_queue_lock); | |
01e2ffac DW |
1174 | spin_lock_init(&card->param_queue_lock); |
1175 | INIT_LIST_HEAD(&card->param_queue); | |
fa755b9f | 1176 | |
fcd82664 | 1177 | err = request_irq(dev->irq, solos_irq, IRQF_SHARED, |
9c54004e | 1178 | "solos-pci", card); |
fa755b9f | 1179 | if (err) { |
9c54004e | 1180 | dev_dbg(&card->dev->dev, "Failed to request interrupt IRQ: %d\n", dev->irq); |
fa755b9f DW |
1181 | goto out_unmap_both; |
1182 | } | |
9c54004e | 1183 | |
9c54004e DW |
1184 | iowrite32(1, card->config_regs + IRQ_EN_ADDR); |
1185 | ||
fa755b9f DW |
1186 | if (fpga_upgrade) |
1187 | flash_upgrade(card, 0); | |
1188 | ||
1189 | if (firmware_upgrade) | |
1190 | flash_upgrade(card, 1); | |
1191 | ||
4dbedf43 NW |
1192 | if (db_fpga_upgrade) |
1193 | flash_upgrade(card, 2); | |
1194 | ||
1195 | if (db_firmware_upgrade) | |
1196 | flash_upgrade(card, 3); | |
1197 | ||
d9ca676b | 1198 | err = atm_init(card, &dev->dev); |
fa755b9f DW |
1199 | if (err) |
1200 | goto out_free_irq; | |
1201 | ||
9c54004e DW |
1202 | return 0; |
1203 | ||
fa755b9f DW |
1204 | out_free_irq: |
1205 | iowrite32(0, card->config_regs + IRQ_EN_ADDR); | |
1206 | free_irq(dev->irq, card); | |
1207 | tasklet_kill(&card->tlet); | |
1208 | ||
9c54004e | 1209 | out_unmap_both: |
fa755b9f | 1210 | pci_set_drvdata(dev, NULL); |
9c54004e | 1211 | pci_iounmap(dev, card->buffers); |
8ae0cfee JL |
1212 | out_unmap_config: |
1213 | pci_iounmap(dev, card->config_regs); | |
9c54004e DW |
1214 | out_release_regions: |
1215 | pci_release_regions(dev); | |
1216 | out: | |
bc111d57 | 1217 | kfree(card); |
9c54004e DW |
1218 | return err; |
1219 | } | |
1220 | ||
d9ca676b | 1221 | static int atm_init(struct solos_card *card, struct device *parent) |
9c54004e DW |
1222 | { |
1223 | int i; | |
1224 | ||
9c54004e | 1225 | for (i = 0; i < card->nr_ports; i++) { |
87ebb186 DW |
1226 | struct sk_buff *skb; |
1227 | struct pkt_hdr *header; | |
1228 | ||
9c54004e DW |
1229 | skb_queue_head_init(&card->tx_queue[i]); |
1230 | skb_queue_head_init(&card->cli_queue[i]); | |
1231 | ||
d9ca676b | 1232 | card->atmdev[i] = atm_dev_register("solos-pci", parent, &fpga_ops, -1, NULL); |
9c54004e DW |
1233 | if (!card->atmdev[i]) { |
1234 | dev_err(&card->dev->dev, "Could not register ATM device %d\n", i); | |
1235 | atm_remove(card); | |
1236 | return -ENODEV; | |
1237 | } | |
1238 | if (device_create_file(&card->atmdev[i]->class_dev, &dev_attr_console)) | |
1239 | dev_err(&card->dev->dev, "Could not register console for ATM device %d\n", i); | |
d057f0a4 DW |
1240 | if (sysfs_create_group(&card->atmdev[i]->class_dev.kobj, &solos_attr_group)) |
1241 | dev_err(&card->dev->dev, "Could not register parameter group for ATM device %d\n", i); | |
9c54004e DW |
1242 | |
1243 | dev_info(&card->dev->dev, "Registered ATM device %d\n", card->atmdev[i]->number); | |
1244 | ||
1245 | card->atmdev[i]->ci_range.vpi_bits = 8; | |
1246 | card->atmdev[i]->ci_range.vci_bits = 16; | |
1247 | card->atmdev[i]->dev_data = card; | |
1248 | card->atmdev[i]->phy_data = (void *)(unsigned long)i; | |
c031235b | 1249 | atm_dev_signal_change(card->atmdev[i], ATM_PHY_SIG_FOUND); |
87ebb186 DW |
1250 | |
1251 | skb = alloc_skb(sizeof(*header), GFP_ATOMIC); | |
1252 | if (!skb) { | |
1253 | dev_warn(&card->dev->dev, "Failed to allocate sk_buff in atm_init()\n"); | |
1254 | continue; | |
1255 | } | |
1256 | ||
1257 | header = (void *)skb_put(skb, sizeof(*header)); | |
1258 | ||
1259 | header->size = cpu_to_le16(0); | |
1260 | header->vpi = cpu_to_le16(0); | |
1261 | header->vci = cpu_to_le16(0); | |
1262 | header->type = cpu_to_le16(PKT_STATUS); | |
1263 | ||
1264 | fpga_queue(card, i, skb, NULL); | |
9c54004e DW |
1265 | } |
1266 | return 0; | |
1267 | } | |
1268 | ||
1269 | static void atm_remove(struct solos_card *card) | |
1270 | { | |
1271 | int i; | |
1272 | ||
1273 | for (i = 0; i < card->nr_ports; i++) { | |
1274 | if (card->atmdev[i]) { | |
97d759d3 DW |
1275 | struct sk_buff *skb; |
1276 | ||
9c54004e | 1277 | dev_info(&card->dev->dev, "Unregistering ATM device %d\n", card->atmdev[i]->number); |
c0fe3026 DW |
1278 | |
1279 | sysfs_remove_group(&card->atmdev[i]->class_dev.kobj, &solos_attr_group); | |
9c54004e | 1280 | atm_dev_deregister(card->atmdev[i]); |
97d759d3 DW |
1281 | |
1282 | skb = card->rx_skb[i]; | |
1283 | if (skb) { | |
1284 | pci_unmap_single(card->dev, SKB_CB(skb)->dma_addr, | |
1285 | RX_DMA_SIZE, PCI_DMA_FROMDEVICE); | |
1286 | dev_kfree_skb(skb); | |
1287 | } | |
1288 | skb = card->tx_skb[i]; | |
1289 | if (skb) { | |
1290 | pci_unmap_single(card->dev, SKB_CB(skb)->dma_addr, | |
1291 | skb->len, PCI_DMA_TODEVICE); | |
1292 | dev_kfree_skb(skb); | |
1293 | } | |
1294 | while ((skb = skb_dequeue(&card->tx_queue[i]))) | |
1295 | dev_kfree_skb(skb); | |
1296 | ||
9c54004e DW |
1297 | } |
1298 | } | |
1299 | } | |
1300 | ||
1301 | static void fpga_remove(struct pci_dev *dev) | |
1302 | { | |
1303 | struct solos_card *card = pci_get_drvdata(dev); | |
97d759d3 DW |
1304 | |
1305 | /* Disable IRQs */ | |
1306 | iowrite32(0, card->config_regs + IRQ_EN_ADDR); | |
9c54004e | 1307 | |
97d759d3 DW |
1308 | /* Reset FPGA */ |
1309 | iowrite32(1, card->config_regs + FPGA_MODE); | |
1310 | (void)ioread32(card->config_regs + FPGA_MODE); | |
9c54004e DW |
1311 | |
1312 | atm_remove(card); | |
1313 | ||
9c54004e DW |
1314 | free_irq(dev->irq, card); |
1315 | tasklet_kill(&card->tlet); | |
1316 | ||
97d759d3 DW |
1317 | /* Release device from reset */ |
1318 | iowrite32(0, card->config_regs + FPGA_MODE); | |
1319 | (void)ioread32(card->config_regs + FPGA_MODE); | |
1320 | ||
9c54004e DW |
1321 | pci_iounmap(dev, card->buffers); |
1322 | pci_iounmap(dev, card->config_regs); | |
1323 | ||
9c54004e DW |
1324 | pci_release_regions(dev); |
1325 | pci_disable_device(dev); | |
1326 | ||
1327 | pci_set_drvdata(dev, NULL); | |
1328 | kfree(card); | |
9c54004e DW |
1329 | } |
1330 | ||
1331 | static struct pci_device_id fpga_pci_tbl[] __devinitdata = { | |
1332 | { 0x10ee, 0x0300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, | |
1333 | { 0, } | |
1334 | }; | |
1335 | ||
1336 | MODULE_DEVICE_TABLE(pci,fpga_pci_tbl); | |
1337 | ||
1338 | static struct pci_driver fpga_driver = { | |
1339 | .name = "solos", | |
1340 | .id_table = fpga_pci_tbl, | |
1341 | .probe = fpga_probe, | |
1342 | .remove = fpga_remove, | |
1343 | }; | |
1344 | ||
1345 | ||
1346 | static int __init solos_pci_init(void) | |
1347 | { | |
1348 | printk(KERN_INFO "Solos PCI Driver Version %s\n", VERSION); | |
1349 | return pci_register_driver(&fpga_driver); | |
1350 | } | |
1351 | ||
1352 | static void __exit solos_pci_exit(void) | |
1353 | { | |
1354 | pci_unregister_driver(&fpga_driver); | |
1355 | printk(KERN_INFO "Solos PCI Driver %s Unloaded\n", VERSION); | |
1356 | } | |
1357 | ||
1358 | module_init(solos_pci_init); | |
1359 | module_exit(solos_pci_exit); |