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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); | |
1e615df6 | 168 | static void release_vccs(struct atm_dev *dev); |
9c54004e DW |
169 | static int atm_init(struct solos_card *); |
170 | static void atm_remove(struct solos_card *); | |
171 | static int send_command(struct solos_card *card, int dev, const char *buf, size_t size); | |
172 | static void solos_bh(unsigned long); | |
173 | static int print_buffer(struct sk_buff *buf); | |
174 | ||
175 | static inline void solos_pop(struct atm_vcc *vcc, struct sk_buff *skb) | |
176 | { | |
177 | if (vcc->pop) | |
178 | vcc->pop(vcc, skb); | |
179 | else | |
180 | dev_kfree_skb_any(skb); | |
181 | } | |
182 | ||
01e2ffac DW |
183 | static ssize_t solos_param_show(struct device *dev, struct device_attribute *attr, |
184 | char *buf) | |
185 | { | |
186 | struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev); | |
187 | struct solos_card *card = atmdev->dev_data; | |
188 | struct solos_param prm; | |
189 | struct sk_buff *skb; | |
190 | struct pkt_hdr *header; | |
191 | int buflen; | |
192 | ||
193 | buflen = strlen(attr->attr.name) + 10; | |
194 | ||
3456b221 | 195 | skb = alloc_skb(sizeof(*header) + buflen, GFP_KERNEL); |
01e2ffac DW |
196 | if (!skb) { |
197 | dev_warn(&card->dev->dev, "Failed to allocate sk_buff in solos_param_show()\n"); | |
198 | return -ENOMEM; | |
199 | } | |
200 | ||
201 | header = (void *)skb_put(skb, sizeof(*header)); | |
202 | ||
203 | buflen = snprintf((void *)&header[1], buflen - 1, | |
204 | "L%05d\n%s\n", current->pid, attr->attr.name); | |
205 | skb_put(skb, buflen); | |
206 | ||
207 | header->size = cpu_to_le16(buflen); | |
208 | header->vpi = cpu_to_le16(0); | |
209 | header->vci = cpu_to_le16(0); | |
210 | header->type = cpu_to_le16(PKT_COMMAND); | |
211 | ||
212 | prm.pid = current->pid; | |
213 | prm.response = NULL; | |
214 | prm.port = SOLOS_CHAN(atmdev); | |
215 | ||
216 | spin_lock_irq(&card->param_queue_lock); | |
217 | list_add(&prm.list, &card->param_queue); | |
218 | spin_unlock_irq(&card->param_queue_lock); | |
219 | ||
220 | fpga_queue(card, prm.port, skb, NULL); | |
221 | ||
222 | wait_event_timeout(card->param_wq, prm.response, 5 * HZ); | |
223 | ||
224 | spin_lock_irq(&card->param_queue_lock); | |
225 | list_del(&prm.list); | |
226 | spin_unlock_irq(&card->param_queue_lock); | |
227 | ||
228 | if (!prm.response) | |
229 | return -EIO; | |
230 | ||
231 | buflen = prm.response->len; | |
232 | memcpy(buf, prm.response->data, buflen); | |
233 | kfree_skb(prm.response); | |
234 | ||
235 | return buflen; | |
236 | } | |
237 | ||
238 | static ssize_t solos_param_store(struct device *dev, struct device_attribute *attr, | |
239 | const char *buf, size_t count) | |
240 | { | |
241 | struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev); | |
242 | struct solos_card *card = atmdev->dev_data; | |
243 | struct solos_param prm; | |
244 | struct sk_buff *skb; | |
245 | struct pkt_hdr *header; | |
246 | int buflen; | |
247 | ssize_t ret; | |
248 | ||
249 | buflen = strlen(attr->attr.name) + 11 + count; | |
250 | ||
3456b221 | 251 | skb = alloc_skb(sizeof(*header) + buflen, GFP_KERNEL); |
01e2ffac DW |
252 | if (!skb) { |
253 | dev_warn(&card->dev->dev, "Failed to allocate sk_buff in solos_param_store()\n"); | |
254 | return -ENOMEM; | |
255 | } | |
256 | ||
257 | header = (void *)skb_put(skb, sizeof(*header)); | |
258 | ||
259 | buflen = snprintf((void *)&header[1], buflen - 1, | |
260 | "L%05d\n%s\n%s\n", current->pid, attr->attr.name, buf); | |
261 | ||
262 | skb_put(skb, buflen); | |
263 | header->size = cpu_to_le16(buflen); | |
264 | header->vpi = cpu_to_le16(0); | |
265 | header->vci = cpu_to_le16(0); | |
266 | header->type = cpu_to_le16(PKT_COMMAND); | |
267 | ||
268 | prm.pid = current->pid; | |
269 | prm.response = NULL; | |
270 | prm.port = SOLOS_CHAN(atmdev); | |
271 | ||
272 | spin_lock_irq(&card->param_queue_lock); | |
273 | list_add(&prm.list, &card->param_queue); | |
274 | spin_unlock_irq(&card->param_queue_lock); | |
275 | ||
276 | fpga_queue(card, prm.port, skb, NULL); | |
277 | ||
278 | wait_event_timeout(card->param_wq, prm.response, 5 * HZ); | |
279 | ||
280 | spin_lock_irq(&card->param_queue_lock); | |
281 | list_del(&prm.list); | |
282 | spin_unlock_irq(&card->param_queue_lock); | |
283 | ||
284 | skb = prm.response; | |
285 | ||
286 | if (!skb) | |
287 | return -EIO; | |
288 | ||
289 | buflen = skb->len; | |
290 | ||
291 | /* Sometimes it has a newline, sometimes it doesn't. */ | |
292 | if (skb->data[buflen - 1] == '\n') | |
293 | buflen--; | |
294 | ||
295 | if (buflen == 2 && !strncmp(skb->data, "OK", 2)) | |
296 | ret = count; | |
297 | else if (buflen == 5 && !strncmp(skb->data, "ERROR", 5)) | |
298 | ret = -EIO; | |
299 | else { | |
300 | /* We know we have enough space allocated for this; we allocated | |
301 | it ourselves */ | |
302 | skb->data[buflen] = 0; | |
303 | ||
304 | dev_warn(&card->dev->dev, "Unexpected parameter response: '%s'\n", | |
305 | skb->data); | |
306 | ret = -EIO; | |
307 | } | |
308 | kfree_skb(skb); | |
309 | ||
310 | return ret; | |
311 | } | |
312 | ||
87ebb186 DW |
313 | static char *next_string(struct sk_buff *skb) |
314 | { | |
315 | int i = 0; | |
316 | char *this = skb->data; | |
c6428e52 DW |
317 | |
318 | for (i = 0; i < skb->len; i++) { | |
87ebb186 DW |
319 | if (this[i] == '\n') { |
320 | this[i] = 0; | |
c6428e52 | 321 | skb_pull(skb, i + 1); |
87ebb186 DW |
322 | return this; |
323 | } | |
c6428e52 DW |
324 | if (!isprint(this[i])) |
325 | return NULL; | |
87ebb186 DW |
326 | } |
327 | return NULL; | |
328 | } | |
329 | ||
330 | /* | |
331 | * Status packet has fields separated by \n, starting with a version number | |
332 | * for the information therein. Fields are.... | |
333 | * | |
334 | * packet version | |
87ebb186 | 335 | * RxBitRate (version >= 1) |
f87b2ed2 | 336 | * TxBitRate (version >= 1) |
87ebb186 | 337 | * State (version >= 1) |
f87b2ed2 DW |
338 | * LocalSNRMargin (version >= 1) |
339 | * LocalLineAttn (version >= 1) | |
87ebb186 DW |
340 | */ |
341 | static int process_status(struct solos_card *card, int port, struct sk_buff *skb) | |
342 | { | |
f87b2ed2 DW |
343 | char *str, *end, *state_str, *snr, *attn; |
344 | int ver, rate_up, rate_down; | |
87ebb186 DW |
345 | |
346 | if (!card->atmdev[port]) | |
347 | return -ENODEV; | |
348 | ||
349 | str = next_string(skb); | |
350 | if (!str) | |
351 | return -EIO; | |
352 | ||
353 | ver = simple_strtol(str, NULL, 10); | |
354 | if (ver < 1) { | |
355 | dev_warn(&card->dev->dev, "Unexpected status interrupt version %d\n", | |
356 | ver); | |
357 | return -EIO; | |
358 | } | |
359 | ||
360 | str = next_string(skb); | |
c6428e52 DW |
361 | if (!str) |
362 | return -EIO; | |
95852f48 DW |
363 | if (!strcmp(str, "ERROR")) { |
364 | dev_dbg(&card->dev->dev, "Status packet indicated Solos error on port %d (starting up?)\n", | |
365 | port); | |
366 | return 0; | |
367 | } | |
368 | ||
f87b2ed2 | 369 | rate_down = simple_strtol(str, &end, 10); |
87ebb186 DW |
370 | if (*end) |
371 | return -EIO; | |
372 | ||
373 | str = next_string(skb); | |
c6428e52 DW |
374 | if (!str) |
375 | return -EIO; | |
f87b2ed2 | 376 | rate_up = simple_strtol(str, &end, 10); |
87ebb186 DW |
377 | if (*end) |
378 | return -EIO; | |
379 | ||
af780656 | 380 | state_str = next_string(skb); |
c6428e52 DW |
381 | if (!state_str) |
382 | return -EIO; | |
f87b2ed2 DW |
383 | |
384 | /* Anything but 'Showtime' is down */ | |
385 | if (strcmp(state_str, "Showtime")) { | |
49d49106 | 386 | atm_dev_signal_change(card->atmdev[port], ATM_PHY_SIG_LOST); |
1e615df6 | 387 | release_vccs(card->atmdev[port]); |
f87b2ed2 DW |
388 | dev_info(&card->dev->dev, "Port %d: %s\n", port, state_str); |
389 | return 0; | |
1e615df6 | 390 | } |
87ebb186 | 391 | |
f87b2ed2 | 392 | snr = next_string(skb); |
6cf5767c | 393 | if (!snr) |
f87b2ed2 DW |
394 | return -EIO; |
395 | attn = next_string(skb); | |
396 | if (!attn) | |
397 | return -EIO; | |
398 | ||
399 | dev_info(&card->dev->dev, "Port %d: %s @%d/%d kb/s%s%s%s%s\n", | |
400 | port, state_str, rate_down/1000, rate_up/1000, | |
401 | snr[0]?", SNR ":"", snr, attn[0]?", Attn ":"", attn); | |
402 | ||
c6428e52 | 403 | card->atmdev[port]->link_rate = rate_down / 424; |
49d49106 | 404 | atm_dev_signal_change(card->atmdev[port], ATM_PHY_SIG_FOUND); |
87ebb186 | 405 | |
87ebb186 DW |
406 | return 0; |
407 | } | |
408 | ||
01e2ffac DW |
409 | static int process_command(struct solos_card *card, int port, struct sk_buff *skb) |
410 | { | |
411 | struct solos_param *prm; | |
412 | unsigned long flags; | |
413 | int cmdpid; | |
414 | int found = 0; | |
415 | ||
416 | if (skb->len < 7) | |
417 | return 0; | |
418 | ||
419 | if (skb->data[0] != 'L' || !isdigit(skb->data[1]) || | |
420 | !isdigit(skb->data[2]) || !isdigit(skb->data[3]) || | |
421 | !isdigit(skb->data[4]) || !isdigit(skb->data[5]) || | |
422 | skb->data[6] != '\n') | |
423 | return 0; | |
424 | ||
425 | cmdpid = simple_strtol(&skb->data[1], NULL, 10); | |
426 | ||
427 | spin_lock_irqsave(&card->param_queue_lock, flags); | |
428 | list_for_each_entry(prm, &card->param_queue, list) { | |
429 | if (prm->port == port && prm->pid == cmdpid) { | |
430 | prm->response = skb; | |
431 | skb_pull(skb, 7); | |
432 | wake_up(&card->param_wq); | |
433 | found = 1; | |
434 | break; | |
435 | } | |
436 | } | |
437 | spin_unlock_irqrestore(&card->param_queue_lock, flags); | |
438 | return found; | |
439 | } | |
440 | ||
9c54004e DW |
441 | static ssize_t console_show(struct device *dev, struct device_attribute *attr, |
442 | char *buf) | |
443 | { | |
444 | struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev); | |
445 | struct solos_card *card = atmdev->dev_data; | |
446 | struct sk_buff *skb; | |
447 | ||
448 | spin_lock(&card->cli_queue_lock); | |
449 | skb = skb_dequeue(&card->cli_queue[SOLOS_CHAN(atmdev)]); | |
450 | spin_unlock(&card->cli_queue_lock); | |
451 | if(skb == NULL) | |
452 | return sprintf(buf, "No data.\n"); | |
453 | ||
454 | memcpy(buf, skb->data, skb->len); | |
455 | dev_dbg(&card->dev->dev, "len: %d\n", skb->len); | |
456 | ||
457 | kfree_skb(skb); | |
458 | return skb->len; | |
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 | uint32_t data32 = 0; |
531 | int blocksize = 0; | |
532 | int numblocks = 0; | |
fa755b9f DW |
533 | int offset; |
534 | ||
7adcdb4c AM |
535 | switch (chip) { |
536 | case 0: | |
fa755b9f | 537 | fw_name = "solos-FPGA.bin"; |
7c4015bd | 538 | blocksize = FPGA_BLOCK; |
7adcdb4c AM |
539 | break; |
540 | case 1: | |
fa755b9f | 541 | fw_name = "solos-Firmware.bin"; |
7c4015bd | 542 | blocksize = SOLOS_BLOCK; |
7adcdb4c AM |
543 | break; |
544 | case 2: | |
4dbedf43 NW |
545 | if (card->fpga_version > LEGACY_BUFFERS){ |
546 | fw_name = "solos-db-FPGA.bin"; | |
547 | blocksize = FPGA_BLOCK; | |
548 | } else { | |
7adcdb4c AM |
549 | dev_info(&card->dev->dev, "FPGA version doesn't support" |
550 | " daughter board upgrades\n"); | |
4dbedf43 NW |
551 | return -EPERM; |
552 | } | |
7adcdb4c AM |
553 | break; |
554 | case 3: | |
4dbedf43 NW |
555 | if (card->fpga_version > LEGACY_BUFFERS){ |
556 | fw_name = "solos-Firmware.bin"; | |
557 | blocksize = SOLOS_BLOCK; | |
558 | } else { | |
7adcdb4c AM |
559 | dev_info(&card->dev->dev, "FPGA version doesn't support" |
560 | " daughter board upgrades\n"); | |
561 | return -EPERM; | |
4dbedf43 | 562 | } |
7adcdb4c AM |
563 | break; |
564 | default: | |
565 | return -ENODEV; | |
4dbedf43 | 566 | } |
fa755b9f DW |
567 | |
568 | if (request_firmware(&fw, fw_name, &card->dev->dev)) | |
569 | return -ENOENT; | |
570 | ||
571 | dev_info(&card->dev->dev, "Flash upgrade starting\n"); | |
572 | ||
573 | numblocks = fw->size / blocksize; | |
574 | dev_info(&card->dev->dev, "Firmware size: %zd\n", fw->size); | |
7c4015bd SF |
575 | dev_info(&card->dev->dev, "Number of blocks: %d\n", numblocks); |
576 | ||
7c4015bd SF |
577 | dev_info(&card->dev->dev, "Changing FPGA to Update mode\n"); |
578 | iowrite32(1, card->config_regs + FPGA_MODE); | |
579 | data32 = ioread32(card->config_regs + FPGA_MODE); | |
7c4015bd | 580 | |
fa755b9f | 581 | /* Set mode to Chip Erase */ |
4dbedf43 NW |
582 | if(chip == 0 || chip == 2) |
583 | dev_info(&card->dev->dev, "Set FPGA Flash mode to FPGA Chip Erase\n"); | |
584 | if(chip == 1 || chip == 3) | |
585 | dev_info(&card->dev->dev, "Set FPGA Flash mode to Solos Chip Erase\n"); | |
fa755b9f | 586 | iowrite32((chip * 2), card->config_regs + FLASH_MODE); |
7c4015bd | 587 | |
7c4015bd | 588 | |
fa755b9f DW |
589 | iowrite32(1, card->config_regs + WRITE_FLASH); |
590 | wait_event(card->fw_wq, !ioread32(card->config_regs + FLASH_BUSY)); | |
591 | ||
592 | for (offset = 0; offset < fw->size; offset += blocksize) { | |
593 | int i; | |
594 | ||
595 | /* Clear write flag */ | |
7c4015bd | 596 | iowrite32(0, card->config_regs + WRITE_FLASH); |
7c4015bd | 597 | |
fa755b9f DW |
598 | /* Set mode to Block Write */ |
599 | /* dev_info(&card->dev->dev, "Set FPGA Flash mode to Block Write\n"); */ | |
600 | iowrite32(((chip * 2) + 1), card->config_regs + FLASH_MODE); | |
601 | ||
602 | /* Copy block to buffer, swapping each 16 bits */ | |
603 | for(i = 0; i < blocksize; i += 4) { | |
604 | uint32_t word = swahb32p((uint32_t *)(fw->data + offset + i)); | |
4dbedf43 NW |
605 | if(card->fpga_version > LEGACY_BUFFERS) |
606 | iowrite32(word, FLASH_BUF + i); | |
607 | else | |
608 | iowrite32(word, RX_BUF(card, 3) + i); | |
7c4015bd | 609 | } |
fa755b9f DW |
610 | |
611 | /* Specify block number and then trigger flash write */ | |
612 | iowrite32(offset / blocksize, card->config_regs + FLASH_BLOCK); | |
613 | iowrite32(1, card->config_regs + WRITE_FLASH); | |
614 | wait_event(card->fw_wq, !ioread32(card->config_regs + FLASH_BUSY)); | |
7c4015bd SF |
615 | } |
616 | ||
fa755b9f DW |
617 | release_firmware(fw); |
618 | iowrite32(0, card->config_regs + WRITE_FLASH); | |
619 | iowrite32(0, card->config_regs + FPGA_MODE); | |
620 | iowrite32(0, card->config_regs + FLASH_MODE); | |
621 | dev_info(&card->dev->dev, "Returning FPGA to Data mode\n"); | |
622 | return 0; | |
7c4015bd SF |
623 | } |
624 | ||
9c54004e DW |
625 | static irqreturn_t solos_irq(int irq, void *dev_id) |
626 | { | |
627 | struct solos_card *card = dev_id; | |
628 | int handled = 1; | |
629 | ||
9c54004e | 630 | iowrite32(0, card->config_regs + IRQ_CLEAR); |
9c54004e | 631 | |
35c2221b | 632 | /* If we're up and running, just kick the tasklet to process TX/RX */ |
fa755b9f | 633 | if (card->atmdev[0]) |
9c54004e | 634 | tasklet_schedule(&card->tlet); |
fa755b9f DW |
635 | else |
636 | wake_up(&card->fw_wq); | |
9c54004e | 637 | |
9c54004e DW |
638 | return IRQ_RETVAL(handled); |
639 | } | |
640 | ||
641 | void solos_bh(unsigned long card_arg) | |
642 | { | |
643 | struct solos_card *card = (void *)card_arg; | |
9c54004e | 644 | uint32_t card_flags; |
9c54004e | 645 | uint32_t rx_done = 0; |
35c2221b | 646 | int port; |
9c54004e | 647 | |
35c2221b DW |
648 | /* |
649 | * Since fpga_tx() is going to need to read the flags under its lock, | |
650 | * it can return them to us so that we don't have to hit PCI MMIO | |
651 | * again for the same information | |
652 | */ | |
653 | card_flags = fpga_tx(card); | |
9c54004e DW |
654 | |
655 | for (port = 0; port < card->nr_ports; port++) { | |
656 | if (card_flags & (0x10 << port)) { | |
90937231 | 657 | struct pkt_hdr _hdr, *header; |
9c54004e DW |
658 | struct sk_buff *skb; |
659 | struct atm_vcc *vcc; | |
660 | int size; | |
661 | ||
90937231 DW |
662 | if (card->using_dma) { |
663 | skb = card->rx_skb[port]; | |
eaf83e39 | 664 | card->rx_skb[port] = NULL; |
9c54004e | 665 | |
eaf83e39 DW |
666 | pci_unmap_single(card->dev, SKB_CB(skb)->dma_addr, |
667 | RX_DMA_SIZE, PCI_DMA_FROMDEVICE); | |
9c54004e | 668 | |
90937231 DW |
669 | header = (void *)skb->data; |
670 | size = le16_to_cpu(header->size); | |
671 | skb_put(skb, size + sizeof(*header)); | |
672 | skb_pull(skb, sizeof(*header)); | |
673 | } else { | |
674 | header = &_hdr; | |
9c54004e | 675 | |
90937231 | 676 | rx_done |= 0x10 << port; |
9c54004e | 677 | |
90937231 | 678 | memcpy_fromio(header, RX_BUF(card, port), sizeof(*header)); |
9c54004e | 679 | |
90937231 | 680 | size = le16_to_cpu(header->size); |
78f857f2 NW |
681 | if (size > (card->buffer_size - sizeof(*header))){ |
682 | dev_warn(&card->dev->dev, "Invalid buffer size\n"); | |
683 | continue; | |
684 | } | |
9c54004e | 685 | |
90937231 DW |
686 | skb = alloc_skb(size + 1, GFP_ATOMIC); |
687 | if (!skb) { | |
688 | if (net_ratelimit()) | |
689 | dev_warn(&card->dev->dev, "Failed to allocate sk_buff for RX\n"); | |
690 | continue; | |
691 | } | |
9c54004e | 692 | |
90937231 DW |
693 | memcpy_fromio(skb_put(skb, size), |
694 | RX_BUF(card, port) + sizeof(*header), | |
695 | size); | |
696 | } | |
9c54004e DW |
697 | if (atmdebug) { |
698 | dev_info(&card->dev->dev, "Received: device %d\n", port); | |
699 | dev_info(&card->dev->dev, "size: %d VPI: %d VCI: %d\n", | |
90937231 DW |
700 | size, le16_to_cpu(header->vpi), |
701 | le16_to_cpu(header->vci)); | |
9c54004e DW |
702 | print_buffer(skb); |
703 | } | |
704 | ||
90937231 | 705 | switch (le16_to_cpu(header->type)) { |
9c54004e | 706 | case PKT_DATA: |
90937231 DW |
707 | vcc = find_vcc(card->atmdev[port], le16_to_cpu(header->vpi), |
708 | le16_to_cpu(header->vci)); | |
9c54004e DW |
709 | if (!vcc) { |
710 | if (net_ratelimit()) | |
711 | dev_warn(&card->dev->dev, "Received packet for unknown VCI.VPI %d.%d on port %d\n", | |
90937231 | 712 | le16_to_cpu(header->vci), le16_to_cpu(header->vpi), |
9c54004e DW |
713 | port); |
714 | continue; | |
715 | } | |
716 | atm_charge(vcc, skb->truesize); | |
717 | vcc->push(vcc, skb); | |
718 | atomic_inc(&vcc->stats->rx); | |
719 | break; | |
720 | ||
87ebb186 | 721 | case PKT_STATUS: |
95852f48 DW |
722 | if (process_status(card, port, skb) && |
723 | net_ratelimit()) { | |
724 | dev_warn(&card->dev->dev, "Bad status packet of %d bytes on port %d:\n", skb->len, port); | |
725 | print_buffer(skb); | |
726 | } | |
eaf83e39 | 727 | dev_kfree_skb_any(skb); |
87ebb186 DW |
728 | break; |
729 | ||
9c54004e DW |
730 | case PKT_COMMAND: |
731 | default: /* FIXME: Not really, surely? */ | |
01e2ffac DW |
732 | if (process_command(card, port, skb)) |
733 | break; | |
9c54004e DW |
734 | spin_lock(&card->cli_queue_lock); |
735 | if (skb_queue_len(&card->cli_queue[port]) > 10) { | |
736 | if (net_ratelimit()) | |
737 | dev_warn(&card->dev->dev, "Dropping console response on port %d\n", | |
738 | port); | |
eaf83e39 | 739 | dev_kfree_skb_any(skb); |
9c54004e DW |
740 | } else |
741 | skb_queue_tail(&card->cli_queue[port], skb); | |
742 | spin_unlock(&card->cli_queue_lock); | |
743 | break; | |
744 | } | |
745 | } | |
eaf83e39 DW |
746 | /* Allocate RX skbs for any ports which need them */ |
747 | if (card->using_dma && card->atmdev[port] && | |
748 | !card->rx_skb[port]) { | |
749 | struct sk_buff *skb = alloc_skb(RX_DMA_SIZE, GFP_ATOMIC); | |
750 | if (skb) { | |
751 | SKB_CB(skb)->dma_addr = | |
752 | pci_map_single(card->dev, skb->data, | |
753 | RX_DMA_SIZE, PCI_DMA_FROMDEVICE); | |
754 | iowrite32(SKB_CB(skb)->dma_addr, | |
755 | card->config_regs + RX_DMA_ADDR(port)); | |
756 | card->rx_skb[port] = skb; | |
757 | } else { | |
758 | if (net_ratelimit()) | |
759 | dev_warn(&card->dev->dev, "Failed to allocate RX skb"); | |
760 | ||
761 | /* We'll have to try again later */ | |
762 | tasklet_schedule(&card->tlet); | |
763 | } | |
764 | } | |
9c54004e DW |
765 | } |
766 | if (rx_done) | |
767 | iowrite32(rx_done, card->config_regs + FLAGS_ADDR); | |
768 | ||
769 | return; | |
770 | } | |
771 | ||
772 | static struct atm_vcc *find_vcc(struct atm_dev *dev, short vpi, int vci) | |
773 | { | |
774 | struct hlist_head *head; | |
775 | struct atm_vcc *vcc = NULL; | |
776 | struct hlist_node *node; | |
777 | struct sock *s; | |
778 | ||
779 | read_lock(&vcc_sklist_lock); | |
780 | head = &vcc_hash[vci & (VCC_HTABLE_SIZE -1)]; | |
781 | sk_for_each(s, node, head) { | |
782 | vcc = atm_sk(s); | |
783 | if (vcc->dev == dev && vcc->vci == vci && | |
1f6ea6e5 DW |
784 | vcc->vpi == vpi && vcc->qos.rxtp.traffic_class != ATM_NONE && |
785 | test_bit(ATM_VF_READY, &vcc->flags)) | |
9c54004e DW |
786 | goto out; |
787 | } | |
788 | vcc = NULL; | |
789 | out: | |
790 | read_unlock(&vcc_sklist_lock); | |
791 | return vcc; | |
792 | } | |
793 | ||
794 | static int list_vccs(int vci) | |
795 | { | |
796 | struct hlist_head *head; | |
797 | struct atm_vcc *vcc; | |
798 | struct hlist_node *node; | |
799 | struct sock *s; | |
800 | int num_found = 0; | |
801 | int i; | |
802 | ||
803 | read_lock(&vcc_sklist_lock); | |
804 | if (vci != 0){ | |
805 | head = &vcc_hash[vci & (VCC_HTABLE_SIZE -1)]; | |
806 | sk_for_each(s, node, head) { | |
807 | num_found ++; | |
808 | vcc = atm_sk(s); | |
809 | printk(KERN_DEBUG "Device: %d Vpi: %d Vci: %d\n", | |
810 | vcc->dev->number, | |
811 | vcc->vpi, | |
812 | vcc->vci); | |
813 | } | |
814 | } else { | |
1e615df6 | 815 | for(i = 0; i < VCC_HTABLE_SIZE; i++){ |
9c54004e DW |
816 | head = &vcc_hash[i]; |
817 | sk_for_each(s, node, head) { | |
818 | num_found ++; | |
819 | vcc = atm_sk(s); | |
820 | printk(KERN_DEBUG "Device: %d Vpi: %d Vci: %d\n", | |
821 | vcc->dev->number, | |
822 | vcc->vpi, | |
823 | vcc->vci); | |
824 | } | |
825 | } | |
826 | } | |
827 | read_unlock(&vcc_sklist_lock); | |
828 | return num_found; | |
829 | } | |
830 | ||
1e615df6 DW |
831 | static void release_vccs(struct atm_dev *dev) |
832 | { | |
833 | int i; | |
834 | ||
835 | write_lock_irq(&vcc_sklist_lock); | |
836 | for (i = 0; i < VCC_HTABLE_SIZE; i++) { | |
837 | struct hlist_head *head = &vcc_hash[i]; | |
838 | struct hlist_node *node, *tmp; | |
839 | struct sock *s; | |
840 | struct atm_vcc *vcc; | |
841 | ||
842 | sk_for_each_safe(s, node, tmp, head) { | |
843 | vcc = atm_sk(s); | |
844 | if (vcc->dev == dev) { | |
845 | vcc_release_async(vcc, -EPIPE); | |
846 | sk_del_node_init(s); | |
847 | } | |
848 | } | |
849 | } | |
850 | write_unlock_irq(&vcc_sklist_lock); | |
851 | } | |
852 | ||
9c54004e DW |
853 | |
854 | static int popen(struct atm_vcc *vcc) | |
855 | { | |
856 | struct solos_card *card = vcc->dev->dev_data; | |
857 | struct sk_buff *skb; | |
858 | struct pkt_hdr *header; | |
859 | ||
b28a4b9a DW |
860 | if (vcc->qos.aal != ATM_AAL5) { |
861 | dev_warn(&card->dev->dev, "Unsupported ATM type %d\n", | |
862 | vcc->qos.aal); | |
863 | return -EINVAL; | |
864 | } | |
865 | ||
9c54004e DW |
866 | skb = alloc_skb(sizeof(*header), GFP_ATOMIC); |
867 | if (!skb && net_ratelimit()) { | |
868 | dev_warn(&card->dev->dev, "Failed to allocate sk_buff in popen()\n"); | |
869 | return -ENOMEM; | |
870 | } | |
871 | header = (void *)skb_put(skb, sizeof(*header)); | |
872 | ||
b76811af | 873 | header->size = cpu_to_le16(0); |
9c54004e DW |
874 | header->vpi = cpu_to_le16(vcc->vpi); |
875 | header->vci = cpu_to_le16(vcc->vci); | |
876 | header->type = cpu_to_le16(PKT_POPEN); | |
877 | ||
878 | fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, NULL); | |
879 | ||
bdc54625 | 880 | set_bit(ATM_VF_ADDR, &vcc->flags); |
9c54004e DW |
881 | set_bit(ATM_VF_READY, &vcc->flags); |
882 | list_vccs(0); | |
883 | ||
9c54004e DW |
884 | |
885 | return 0; | |
886 | } | |
887 | ||
888 | static void pclose(struct atm_vcc *vcc) | |
889 | { | |
890 | struct solos_card *card = vcc->dev->dev_data; | |
891 | struct sk_buff *skb; | |
892 | struct pkt_hdr *header; | |
893 | ||
894 | skb = alloc_skb(sizeof(*header), GFP_ATOMIC); | |
895 | if (!skb) { | |
896 | dev_warn(&card->dev->dev, "Failed to allocate sk_buff in pclose()\n"); | |
897 | return; | |
898 | } | |
899 | header = (void *)skb_put(skb, sizeof(*header)); | |
900 | ||
b76811af | 901 | header->size = cpu_to_le16(0); |
9c54004e DW |
902 | header->vpi = cpu_to_le16(vcc->vpi); |
903 | header->vci = cpu_to_le16(vcc->vci); | |
904 | header->type = cpu_to_le16(PKT_PCLOSE); | |
905 | ||
906 | fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, NULL); | |
907 | ||
9c54004e DW |
908 | clear_bit(ATM_VF_ADDR, &vcc->flags); |
909 | clear_bit(ATM_VF_READY, &vcc->flags); | |
910 | ||
1f6ea6e5 DW |
911 | /* Hold up vcc_destroy_socket() (our caller) until solos_bh() in the |
912 | tasklet has finished processing any incoming packets (and, more to | |
913 | the point, using the vcc pointer). */ | |
914 | tasklet_unlock_wait(&card->tlet); | |
9c54004e DW |
915 | return; |
916 | } | |
917 | ||
918 | static int print_buffer(struct sk_buff *buf) | |
919 | { | |
920 | int len,i; | |
921 | char msg[500]; | |
922 | char item[10]; | |
923 | ||
924 | len = buf->len; | |
925 | for (i = 0; i < len; i++){ | |
926 | if(i % 8 == 0) | |
927 | sprintf(msg, "%02X: ", i); | |
928 | ||
929 | sprintf(item,"%02X ",*(buf->data + i)); | |
930 | strcat(msg, item); | |
931 | if(i % 8 == 7) { | |
932 | sprintf(item, "\n"); | |
933 | strcat(msg, item); | |
934 | printk(KERN_DEBUG "%s", msg); | |
935 | } | |
936 | } | |
937 | if (i % 8 != 0) { | |
938 | sprintf(item, "\n"); | |
939 | strcat(msg, item); | |
940 | printk(KERN_DEBUG "%s", msg); | |
941 | } | |
942 | printk(KERN_DEBUG "\n"); | |
943 | ||
944 | return 0; | |
945 | } | |
946 | ||
947 | static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb, | |
948 | struct atm_vcc *vcc) | |
949 | { | |
950 | int old_len; | |
f69e4170 | 951 | unsigned long flags; |
9c54004e | 952 | |
90937231 | 953 | SKB_CB(skb)->vcc = vcc; |
9c54004e | 954 | |
f69e4170 | 955 | spin_lock_irqsave(&card->tx_queue_lock, flags); |
9c54004e DW |
956 | old_len = skb_queue_len(&card->tx_queue[port]); |
957 | skb_queue_tail(&card->tx_queue[port], skb); | |
35c2221b | 958 | if (!old_len) |
f69e4170 | 959 | card->tx_mask |= (1 << port); |
f69e4170 | 960 | spin_unlock_irqrestore(&card->tx_queue_lock, flags); |
9c54004e | 961 | |
f69e4170 DW |
962 | /* Theoretically we could just schedule the tasklet here, but |
963 | that introduces latency we don't want -- it's noticeable */ | |
9c54004e DW |
964 | if (!old_len) |
965 | fpga_tx(card); | |
966 | } | |
967 | ||
35c2221b | 968 | static uint32_t fpga_tx(struct solos_card *card) |
9c54004e | 969 | { |
35c2221b | 970 | uint32_t tx_pending, card_flags; |
9c54004e DW |
971 | uint32_t tx_started = 0; |
972 | struct sk_buff *skb; | |
973 | struct atm_vcc *vcc; | |
974 | unsigned char port; | |
975 | unsigned long flags; | |
976 | ||
977 | spin_lock_irqsave(&card->tx_lock, flags); | |
35c2221b DW |
978 | |
979 | card_flags = ioread32(card->config_regs + FLAGS_ADDR); | |
980 | /* | |
981 | * The queue lock is required for _writing_ to tx_mask, but we're | |
982 | * OK to read it here without locking. The only potential update | |
983 | * that we could race with is in fpga_queue() where it sets a bit | |
984 | * for a new port... but it's going to call this function again if | |
985 | * it's doing that, anyway. | |
986 | */ | |
987 | tx_pending = card->tx_mask & ~card_flags; | |
988 | ||
989 | for (port = 0; tx_pending; tx_pending >>= 1, port++) { | |
990 | if (tx_pending & 1) { | |
eaf83e39 | 991 | struct sk_buff *oldskb = card->tx_skb[port]; |
eaf83e39 DW |
992 | if (oldskb) |
993 | pci_unmap_single(card->dev, SKB_CB(oldskb)->dma_addr, | |
994 | oldskb->len, PCI_DMA_TODEVICE); | |
9c54004e DW |
995 | |
996 | spin_lock(&card->tx_queue_lock); | |
997 | skb = skb_dequeue(&card->tx_queue[port]); | |
f69e4170 DW |
998 | if (!skb) |
999 | card->tx_mask &= ~(1 << port); | |
9c54004e DW |
1000 | spin_unlock(&card->tx_queue_lock); |
1001 | ||
eaf83e39 DW |
1002 | if (skb && !card->using_dma) { |
1003 | memcpy_toio(TX_BUF(card, port), skb->data, skb->len); | |
bdc54625 | 1004 | tx_started |= 1 << port; |
eaf83e39 DW |
1005 | oldskb = skb; /* We're done with this skb already */ |
1006 | } else if (skb && card->using_dma) { | |
1007 | SKB_CB(skb)->dma_addr = pci_map_single(card->dev, skb->data, | |
1008 | skb->len, PCI_DMA_TODEVICE); | |
1009 | iowrite32(SKB_CB(skb)->dma_addr, | |
1010 | card->config_regs + TX_DMA_ADDR(port)); | |
1011 | } | |
1012 | ||
1013 | if (!oldskb) | |
9c54004e DW |
1014 | continue; |
1015 | ||
eaf83e39 | 1016 | /* Clean up and free oldskb now it's gone */ |
9c54004e DW |
1017 | if (atmdebug) { |
1018 | dev_info(&card->dev->dev, "Transmitted: port %d\n", | |
1019 | port); | |
eaf83e39 | 1020 | print_buffer(oldskb); |
9c54004e | 1021 | } |
9c54004e | 1022 | |
eaf83e39 | 1023 | vcc = SKB_CB(oldskb)->vcc; |
9c54004e DW |
1024 | |
1025 | if (vcc) { | |
1026 | atomic_inc(&vcc->stats->tx); | |
eaf83e39 | 1027 | solos_pop(vcc, oldskb); |
9c54004e | 1028 | } else |
eaf83e39 | 1029 | dev_kfree_skb_irq(oldskb); |
9c54004e | 1030 | |
9c54004e DW |
1031 | } |
1032 | } | |
bdc54625 | 1033 | /* For non-DMA TX, write the 'TX start' bit for all four ports simultaneously */ |
9c54004e DW |
1034 | if (tx_started) |
1035 | iowrite32(tx_started, card->config_regs + FLAGS_ADDR); | |
1036 | ||
1037 | spin_unlock_irqrestore(&card->tx_lock, flags); | |
35c2221b | 1038 | return card_flags; |
9c54004e DW |
1039 | } |
1040 | ||
1041 | static int psend(struct atm_vcc *vcc, struct sk_buff *skb) | |
1042 | { | |
1043 | struct solos_card *card = vcc->dev->dev_data; | |
9c54004e | 1044 | struct pkt_hdr *header; |
b76811af | 1045 | int pktlen; |
9c54004e | 1046 | |
b76811af DW |
1047 | pktlen = skb->len; |
1048 | if (pktlen > (BUF_SIZE - sizeof(*header))) { | |
9c54004e DW |
1049 | dev_warn(&card->dev->dev, "Length of PDU is too large. Dropping PDU.\n"); |
1050 | solos_pop(vcc, skb); | |
1051 | return 0; | |
1052 | } | |
1053 | ||
1054 | if (!skb_clone_writable(skb, sizeof(*header))) { | |
1055 | int expand_by = 0; | |
1056 | int ret; | |
1057 | ||
1058 | if (skb_headroom(skb) < sizeof(*header)) | |
1059 | expand_by = sizeof(*header) - skb_headroom(skb); | |
1060 | ||
1061 | ret = pskb_expand_head(skb, expand_by, 0, GFP_ATOMIC); | |
1062 | if (ret) { | |
4306cad6 | 1063 | dev_warn(&card->dev->dev, "pskb_expand_head failed.\n"); |
9c54004e DW |
1064 | solos_pop(vcc, skb); |
1065 | return ret; | |
1066 | } | |
1067 | } | |
1068 | ||
1069 | header = (void *)skb_push(skb, sizeof(*header)); | |
1070 | ||
b76811af DW |
1071 | /* This does _not_ include the size of the header */ |
1072 | header->size = cpu_to_le16(pktlen); | |
9c54004e DW |
1073 | header->vpi = cpu_to_le16(vcc->vpi); |
1074 | header->vci = cpu_to_le16(vcc->vci); | |
1075 | header->type = cpu_to_le16(PKT_DATA); | |
1076 | ||
1077 | fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, vcc); | |
1078 | ||
1079 | return 0; | |
1080 | } | |
1081 | ||
1082 | static struct atmdev_ops fpga_ops = { | |
1083 | .open = popen, | |
1084 | .close = pclose, | |
1085 | .ioctl = NULL, | |
1086 | .getsockopt = NULL, | |
1087 | .setsockopt = NULL, | |
1088 | .send = psend, | |
1089 | .send_oam = NULL, | |
1090 | .phy_put = NULL, | |
1091 | .phy_get = NULL, | |
1092 | .change_qos = NULL, | |
1093 | .proc_read = NULL, | |
1094 | .owner = THIS_MODULE | |
1095 | }; | |
1096 | ||
1097 | static int fpga_probe(struct pci_dev *dev, const struct pci_device_id *id) | |
1098 | { | |
cd5549e0 | 1099 | int err; |
9c54004e DW |
1100 | uint16_t fpga_ver; |
1101 | uint8_t major_ver, minor_ver; | |
1102 | uint32_t data32; | |
1103 | struct solos_card *card; | |
1104 | ||
9c54004e DW |
1105 | card = kzalloc(sizeof(*card), GFP_KERNEL); |
1106 | if (!card) | |
1107 | return -ENOMEM; | |
1108 | ||
1109 | card->dev = dev; | |
fa755b9f | 1110 | init_waitqueue_head(&card->fw_wq); |
01e2ffac | 1111 | init_waitqueue_head(&card->param_wq); |
9c54004e DW |
1112 | |
1113 | err = pci_enable_device(dev); | |
1114 | if (err) { | |
1115 | dev_warn(&dev->dev, "Failed to enable PCI device\n"); | |
1116 | goto out; | |
1117 | } | |
1118 | ||
e930438c | 1119 | err = pci_set_dma_mask(dev, DMA_BIT_MASK(32)); |
90937231 DW |
1120 | if (err) { |
1121 | dev_warn(&dev->dev, "Failed to set 32-bit DMA mask\n"); | |
1122 | goto out; | |
1123 | } | |
1124 | ||
9c54004e DW |
1125 | err = pci_request_regions(dev, "solos"); |
1126 | if (err) { | |
1127 | dev_warn(&dev->dev, "Failed to request regions\n"); | |
1128 | goto out; | |
1129 | } | |
1130 | ||
1131 | card->config_regs = pci_iomap(dev, 0, CONFIG_RAM_SIZE); | |
1132 | if (!card->config_regs) { | |
1133 | dev_warn(&dev->dev, "Failed to ioremap config registers\n"); | |
1134 | goto out_release_regions; | |
1135 | } | |
1136 | card->buffers = pci_iomap(dev, 1, DATA_RAM_SIZE); | |
1137 | if (!card->buffers) { | |
1138 | dev_warn(&dev->dev, "Failed to ioremap data buffers\n"); | |
1139 | goto out_unmap_config; | |
1140 | } | |
1141 | ||
cc3657e1 DW |
1142 | if (reset) { |
1143 | iowrite32(1, card->config_regs + FPGA_MODE); | |
1144 | data32 = ioread32(card->config_regs + FPGA_MODE); | |
9c54004e | 1145 | |
cc3657e1 DW |
1146 | iowrite32(0, card->config_regs + FPGA_MODE); |
1147 | data32 = ioread32(card->config_regs + FPGA_MODE); | |
1148 | } | |
9c54004e DW |
1149 | |
1150 | data32 = ioread32(card->config_regs + FPGA_VER); | |
1151 | fpga_ver = (data32 & 0x0000FFFF); | |
1152 | major_ver = ((data32 & 0xFF000000) >> 24); | |
1153 | minor_ver = ((data32 & 0x00FF0000) >> 16); | |
4dbedf43 NW |
1154 | card->fpga_version = FPGA_VERSION(major_ver,minor_ver); |
1155 | if (card->fpga_version > LEGACY_BUFFERS) | |
1156 | card->buffer_size = BUF_SIZE; | |
1157 | else | |
1158 | card->buffer_size = OLD_BUF_SIZE; | |
9c54004e DW |
1159 | dev_info(&dev->dev, "Solos FPGA Version %d.%02d svn-%d\n", |
1160 | major_ver, minor_ver, fpga_ver); | |
1161 | ||
4dbedf43 | 1162 | if (card->fpga_version >= DMA_SUPPORTED){ |
90937231 | 1163 | card->using_dma = 1; |
4dbedf43 NW |
1164 | } else { |
1165 | card->using_dma = 0; | |
eab50f73 DW |
1166 | /* Set RX empty flag for all ports */ |
1167 | iowrite32(0xF0, card->config_regs + FLAGS_ADDR); | |
1168 | } | |
9c54004e | 1169 | |
0fc36aa5 NW |
1170 | data32 = ioread32(card->config_regs + PORTS); |
1171 | card->nr_ports = (data32 & 0x000000FF); | |
9c54004e DW |
1172 | |
1173 | pci_set_drvdata(dev, card); | |
fa755b9f | 1174 | |
9c54004e DW |
1175 | tasklet_init(&card->tlet, solos_bh, (unsigned long)card); |
1176 | spin_lock_init(&card->tx_lock); | |
1177 | spin_lock_init(&card->tx_queue_lock); | |
1178 | spin_lock_init(&card->cli_queue_lock); | |
01e2ffac DW |
1179 | spin_lock_init(&card->param_queue_lock); |
1180 | INIT_LIST_HEAD(&card->param_queue); | |
fa755b9f | 1181 | |
fcd82664 | 1182 | err = request_irq(dev->irq, solos_irq, IRQF_SHARED, |
9c54004e | 1183 | "solos-pci", card); |
fa755b9f | 1184 | if (err) { |
9c54004e | 1185 | dev_dbg(&card->dev->dev, "Failed to request interrupt IRQ: %d\n", dev->irq); |
fa755b9f DW |
1186 | goto out_unmap_both; |
1187 | } | |
9c54004e | 1188 | |
9c54004e DW |
1189 | iowrite32(1, card->config_regs + IRQ_EN_ADDR); |
1190 | ||
fa755b9f DW |
1191 | if (fpga_upgrade) |
1192 | flash_upgrade(card, 0); | |
1193 | ||
1194 | if (firmware_upgrade) | |
1195 | flash_upgrade(card, 1); | |
1196 | ||
4dbedf43 NW |
1197 | if (db_fpga_upgrade) |
1198 | flash_upgrade(card, 2); | |
1199 | ||
1200 | if (db_firmware_upgrade) | |
1201 | flash_upgrade(card, 3); | |
1202 | ||
fa755b9f DW |
1203 | err = atm_init(card); |
1204 | if (err) | |
1205 | goto out_free_irq; | |
1206 | ||
9c54004e DW |
1207 | return 0; |
1208 | ||
fa755b9f DW |
1209 | out_free_irq: |
1210 | iowrite32(0, card->config_regs + IRQ_EN_ADDR); | |
1211 | free_irq(dev->irq, card); | |
1212 | tasklet_kill(&card->tlet); | |
1213 | ||
9c54004e | 1214 | out_unmap_both: |
fa755b9f | 1215 | pci_set_drvdata(dev, NULL); |
9c54004e DW |
1216 | pci_iounmap(dev, card->config_regs); |
1217 | out_unmap_config: | |
1218 | pci_iounmap(dev, card->buffers); | |
1219 | out_release_regions: | |
1220 | pci_release_regions(dev); | |
1221 | out: | |
bc111d57 | 1222 | kfree(card); |
9c54004e DW |
1223 | return err; |
1224 | } | |
1225 | ||
1226 | static int atm_init(struct solos_card *card) | |
1227 | { | |
1228 | int i; | |
1229 | ||
9c54004e | 1230 | for (i = 0; i < card->nr_ports; i++) { |
87ebb186 DW |
1231 | struct sk_buff *skb; |
1232 | struct pkt_hdr *header; | |
1233 | ||
9c54004e DW |
1234 | skb_queue_head_init(&card->tx_queue[i]); |
1235 | skb_queue_head_init(&card->cli_queue[i]); | |
1236 | ||
1237 | card->atmdev[i] = atm_dev_register("solos-pci", &fpga_ops, -1, NULL); | |
1238 | if (!card->atmdev[i]) { | |
1239 | dev_err(&card->dev->dev, "Could not register ATM device %d\n", i); | |
1240 | atm_remove(card); | |
1241 | return -ENODEV; | |
1242 | } | |
1243 | if (device_create_file(&card->atmdev[i]->class_dev, &dev_attr_console)) | |
1244 | dev_err(&card->dev->dev, "Could not register console for ATM device %d\n", i); | |
d057f0a4 DW |
1245 | if (sysfs_create_group(&card->atmdev[i]->class_dev.kobj, &solos_attr_group)) |
1246 | dev_err(&card->dev->dev, "Could not register parameter group for ATM device %d\n", i); | |
9c54004e DW |
1247 | |
1248 | dev_info(&card->dev->dev, "Registered ATM device %d\n", card->atmdev[i]->number); | |
1249 | ||
1250 | card->atmdev[i]->ci_range.vpi_bits = 8; | |
1251 | card->atmdev[i]->ci_range.vci_bits = 16; | |
1252 | card->atmdev[i]->dev_data = card; | |
1253 | card->atmdev[i]->phy_data = (void *)(unsigned long)i; | |
49d49106 | 1254 | atm_dev_signal_change(card->atmdev[i], ATM_PHY_SIG_UNKNOWN); |
87ebb186 DW |
1255 | |
1256 | skb = alloc_skb(sizeof(*header), GFP_ATOMIC); | |
1257 | if (!skb) { | |
1258 | dev_warn(&card->dev->dev, "Failed to allocate sk_buff in atm_init()\n"); | |
1259 | continue; | |
1260 | } | |
1261 | ||
1262 | header = (void *)skb_put(skb, sizeof(*header)); | |
1263 | ||
1264 | header->size = cpu_to_le16(0); | |
1265 | header->vpi = cpu_to_le16(0); | |
1266 | header->vci = cpu_to_le16(0); | |
1267 | header->type = cpu_to_le16(PKT_STATUS); | |
1268 | ||
1269 | fpga_queue(card, i, skb, NULL); | |
9c54004e DW |
1270 | } |
1271 | return 0; | |
1272 | } | |
1273 | ||
1274 | static void atm_remove(struct solos_card *card) | |
1275 | { | |
1276 | int i; | |
1277 | ||
1278 | for (i = 0; i < card->nr_ports; i++) { | |
1279 | if (card->atmdev[i]) { | |
97d759d3 DW |
1280 | struct sk_buff *skb; |
1281 | ||
9c54004e | 1282 | dev_info(&card->dev->dev, "Unregistering ATM device %d\n", card->atmdev[i]->number); |
c0fe3026 DW |
1283 | |
1284 | sysfs_remove_group(&card->atmdev[i]->class_dev.kobj, &solos_attr_group); | |
9c54004e | 1285 | atm_dev_deregister(card->atmdev[i]); |
97d759d3 DW |
1286 | |
1287 | skb = card->rx_skb[i]; | |
1288 | if (skb) { | |
1289 | pci_unmap_single(card->dev, SKB_CB(skb)->dma_addr, | |
1290 | RX_DMA_SIZE, PCI_DMA_FROMDEVICE); | |
1291 | dev_kfree_skb(skb); | |
1292 | } | |
1293 | skb = card->tx_skb[i]; | |
1294 | if (skb) { | |
1295 | pci_unmap_single(card->dev, SKB_CB(skb)->dma_addr, | |
1296 | skb->len, PCI_DMA_TODEVICE); | |
1297 | dev_kfree_skb(skb); | |
1298 | } | |
1299 | while ((skb = skb_dequeue(&card->tx_queue[i]))) | |
1300 | dev_kfree_skb(skb); | |
1301 | ||
9c54004e DW |
1302 | } |
1303 | } | |
1304 | } | |
1305 | ||
1306 | static void fpga_remove(struct pci_dev *dev) | |
1307 | { | |
1308 | struct solos_card *card = pci_get_drvdata(dev); | |
97d759d3 DW |
1309 | |
1310 | /* Disable IRQs */ | |
1311 | iowrite32(0, card->config_regs + IRQ_EN_ADDR); | |
9c54004e | 1312 | |
97d759d3 DW |
1313 | /* Reset FPGA */ |
1314 | iowrite32(1, card->config_regs + FPGA_MODE); | |
1315 | (void)ioread32(card->config_regs + FPGA_MODE); | |
9c54004e DW |
1316 | |
1317 | atm_remove(card); | |
1318 | ||
9c54004e DW |
1319 | free_irq(dev->irq, card); |
1320 | tasklet_kill(&card->tlet); | |
1321 | ||
97d759d3 DW |
1322 | /* Release device from reset */ |
1323 | iowrite32(0, card->config_regs + FPGA_MODE); | |
1324 | (void)ioread32(card->config_regs + FPGA_MODE); | |
1325 | ||
9c54004e DW |
1326 | pci_iounmap(dev, card->buffers); |
1327 | pci_iounmap(dev, card->config_regs); | |
1328 | ||
9c54004e DW |
1329 | pci_release_regions(dev); |
1330 | pci_disable_device(dev); | |
1331 | ||
1332 | pci_set_drvdata(dev, NULL); | |
1333 | kfree(card); | |
9c54004e DW |
1334 | } |
1335 | ||
1336 | static struct pci_device_id fpga_pci_tbl[] __devinitdata = { | |
1337 | { 0x10ee, 0x0300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, | |
1338 | { 0, } | |
1339 | }; | |
1340 | ||
1341 | MODULE_DEVICE_TABLE(pci,fpga_pci_tbl); | |
1342 | ||
1343 | static struct pci_driver fpga_driver = { | |
1344 | .name = "solos", | |
1345 | .id_table = fpga_pci_tbl, | |
1346 | .probe = fpga_probe, | |
1347 | .remove = fpga_remove, | |
1348 | }; | |
1349 | ||
1350 | ||
1351 | static int __init solos_pci_init(void) | |
1352 | { | |
1353 | printk(KERN_INFO "Solos PCI Driver Version %s\n", VERSION); | |
1354 | return pci_register_driver(&fpga_driver); | |
1355 | } | |
1356 | ||
1357 | static void __exit solos_pci_exit(void) | |
1358 | { | |
1359 | pci_unregister_driver(&fpga_driver); | |
1360 | printk(KERN_INFO "Solos PCI Driver %s Unloaded\n", VERSION); | |
1361 | } | |
1362 | ||
1363 | module_init(solos_pci_init); | |
1364 | module_exit(solos_pci_exit); |