1 /* 2 * Driver for the Solos PCI ADSL2+ card, designed to support Linux by 3 * Traverse Technologies -- http://www.traverse.com.au/ 4 * Xrio Limited -- http://www.xrio.com/ 5 * 6 * 7 * Copyright © 2008 Traverse Technologies 8 * Copyright © 2008 Intel Corporation 9 * 10 * Authors: Nathan Williams <nathan@traverse.com.au> 11 * David Woodhouse <dwmw2@infradead.org> 12 * Treker Chen <treker@xrio.com> 13 * 14 * This program is free software; you can redistribute it and/or 15 * modify it under the terms of the GNU General Public License 16 * version 2, as published by the Free Software Foundation. 17 * 18 * This program is distributed in the hope that it will be useful, 19 * but WITHOUT ANY WARRANTY; without even the implied warranty of 20 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 21 * GNU General Public License for more details. 22 */ 23 24 #define DEBUG 25 #define VERBOSE_DEBUG 26 27 #include <linux/interrupt.h> 28 #include <linux/module.h> 29 #include <linux/kernel.h> 30 #include <linux/errno.h> 31 #include <linux/ioport.h> 32 #include <linux/types.h> 33 #include <linux/pci.h> 34 #include <linux/atm.h> 35 #include <linux/atmdev.h> 36 #include <linux/skbuff.h> 37 #include <linux/sysfs.h> 38 #include <linux/device.h> 39 #include <linux/kobject.h> 40 #include <linux/firmware.h> 41 #include <linux/ctype.h> 42 #include <linux/swab.h> 43 #include <linux/slab.h> 44 45 #define VERSION "0.07" 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 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 59 #define TX_DMA_ADDR(port) (0x40 + (4 * (port))) 60 #define RX_DMA_ADDR(port) (0x30 + (4 * (port))) 61 62 #define DATA_RAM_SIZE 32768 63 #define BUF_SIZE 2048 64 #define OLD_BUF_SIZE 4096 /* For FPGA versions <= 2*/ 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*/ 69 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) 73 74 #define RX_DMA_SIZE 2048 75 76 #define FPGA_VERSION(a,b) (((a) << 8) + (b)) 77 #define LEGACY_BUFFERS 2 78 #define DMA_SUPPORTED 4 79 80 static int reset = 0; 81 static int atmdebug = 0; 82 static int firmware_upgrade = 0; 83 static int fpga_upgrade = 0; 84 static int db_firmware_upgrade = 0; 85 static int db_fpga_upgrade = 0; 86 87 struct pkt_hdr { 88 __le16 size; 89 __le16 vpi; 90 __le16 vci; 91 __le16 type; 92 }; 93 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) 101 102 #define PKT_DATA 0 103 #define PKT_COMMAND 1 104 #define PKT_POPEN 3 105 #define PKT_PCLOSE 4 106 #define PKT_STATUS 5 107 108 struct solos_card { 109 void __iomem *config_regs; 110 void __iomem *buffers; 111 int nr_ports; 112 int tx_mask; 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; 119 spinlock_t param_queue_lock; 120 struct list_head param_queue; 121 struct sk_buff_head tx_queue[4]; 122 struct sk_buff_head cli_queue[4]; 123 struct sk_buff *tx_skb[4]; 124 struct sk_buff *rx_skb[4]; 125 wait_queue_head_t param_wq; 126 wait_queue_head_t fw_wq; 127 int using_dma; 128 int fpga_version; 129 int buffer_size; 130 }; 131 132 133 struct solos_param { 134 struct list_head list; 135 pid_t pid; 136 int port; 137 struct sk_buff *response; 138 }; 139 140 #define SOLOS_CHAN(atmdev) ((int)(unsigned long)(atmdev)->phy_data) 141 142 MODULE_AUTHOR("Traverse Technologies <support@traverse.com.au>"); 143 MODULE_DESCRIPTION("Solos PCI driver"); 144 MODULE_VERSION(VERSION); 145 MODULE_LICENSE("GPL"); 146 MODULE_FIRMWARE("solos-FPGA.bin"); 147 MODULE_FIRMWARE("solos-Firmware.bin"); 148 MODULE_FIRMWARE("solos-db-FPGA.bin"); 149 MODULE_PARM_DESC(reset, "Reset Solos chips on startup"); 150 MODULE_PARM_DESC(atmdebug, "Print ATM data"); 151 MODULE_PARM_DESC(firmware_upgrade, "Initiate Solos firmware upgrade"); 152 MODULE_PARM_DESC(fpga_upgrade, "Initiate FPGA upgrade"); 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"); 155 module_param(reset, int, 0444); 156 module_param(atmdebug, int, 0644); 157 module_param(firmware_upgrade, int, 0444); 158 module_param(fpga_upgrade, int, 0444); 159 module_param(db_firmware_upgrade, int, 0444); 160 module_param(db_fpga_upgrade, int, 0444); 161 162 static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb, 163 struct atm_vcc *vcc); 164 static uint32_t fpga_tx(struct solos_card *); 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); 168 static void release_vccs(struct atm_dev *dev); 169 static int atm_init(struct solos_card *, struct device *); 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 } 182 183 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; 194 195 skb = alloc_skb(sizeof(*header) + buflen, GFP_KERNEL); 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; 250 251 skb = alloc_skb(sizeof(*header) + buflen, GFP_KERNEL); 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 } 312 313 static char *next_string(struct sk_buff *skb) 314 { 315 int i = 0; 316 char *this = skb->data; 317 318 for (i = 0; i < skb->len; i++) { 319 if (this[i] == '\n') { 320 this[i] = 0; 321 skb_pull(skb, i + 1); 322 return this; 323 } 324 if (!isprint(this[i])) 325 return NULL; 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 335 * RxBitRate (version >= 1) 336 * TxBitRate (version >= 1) 337 * State (version >= 1) 338 * LocalSNRMargin (version >= 1) 339 * LocalLineAttn (version >= 1) 340 */ 341 static int process_status(struct solos_card *card, int port, struct sk_buff *skb) 342 { 343 char *str, *end, *state_str, *snr, *attn; 344 int ver, rate_up, rate_down; 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); 361 if (!str) 362 return -EIO; 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 } 368 369 rate_down = simple_strtol(str, &end, 10); 370 if (*end) 371 return -EIO; 372 373 str = next_string(skb); 374 if (!str) 375 return -EIO; 376 rate_up = simple_strtol(str, &end, 10); 377 if (*end) 378 return -EIO; 379 380 state_str = next_string(skb); 381 if (!state_str) 382 return -EIO; 383 384 /* Anything but 'Showtime' is down */ 385 if (strcmp(state_str, "Showtime")) { 386 atm_dev_signal_change(card->atmdev[port], ATM_PHY_SIG_LOST); 387 release_vccs(card->atmdev[port]); 388 dev_info(&card->dev->dev, "Port %d: %s\n", port, state_str); 389 return 0; 390 } 391 392 snr = next_string(skb); 393 if (!snr) 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); 402 403 card->atmdev[port]->link_rate = rate_down / 424; 404 atm_dev_signal_change(card->atmdev[port], ATM_PHY_SIG_FOUND); 405 406 return 0; 407 } 408 409 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 } 440 441 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 unsigned int len; 448 449 spin_lock(&card->cli_queue_lock); 450 skb = skb_dequeue(&card->cli_queue[SOLOS_CHAN(atmdev)]); 451 spin_unlock(&card->cli_queue_lock); 452 if(skb == NULL) 453 return sprintf(buf, "No data.\n"); 454 455 len = skb->len; 456 memcpy(buf, skb->data, len); 457 dev_dbg(&card->dev->dev, "len: %d\n", len); 458 459 kfree_skb(skb); 460 return len; 461 } 462 463 static int send_command(struct solos_card *card, int dev, const char *buf, size_t size) 464 { 465 struct sk_buff *skb; 466 struct pkt_hdr *header; 467 468 if (size > (BUF_SIZE - sizeof(*header))) { 469 dev_dbg(&card->dev->dev, "Command is too big. Dropping request\n"); 470 return 0; 471 } 472 skb = alloc_skb(size + sizeof(*header), GFP_ATOMIC); 473 if (!skb) { 474 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in send_command()\n"); 475 return 0; 476 } 477 478 header = (void *)skb_put(skb, sizeof(*header)); 479 480 header->size = cpu_to_le16(size); 481 header->vpi = cpu_to_le16(0); 482 header->vci = cpu_to_le16(0); 483 header->type = cpu_to_le16(PKT_COMMAND); 484 485 memcpy(skb_put(skb, size), buf, size); 486 487 fpga_queue(card, dev, skb, NULL); 488 489 return 0; 490 } 491 492 static ssize_t console_store(struct device *dev, struct device_attribute *attr, 493 const char *buf, size_t count) 494 { 495 struct atm_dev *atmdev = container_of(dev, struct atm_dev, class_dev); 496 struct solos_card *card = atmdev->dev_data; 497 int err; 498 499 err = send_command(card, SOLOS_CHAN(atmdev), buf, count); 500 501 return err?:count; 502 } 503 504 static DEVICE_ATTR(console, 0644, console_show, console_store); 505 506 507 #define SOLOS_ATTR_RO(x) static DEVICE_ATTR(x, 0444, solos_param_show, NULL); 508 #define SOLOS_ATTR_RW(x) static DEVICE_ATTR(x, 0644, solos_param_show, solos_param_store); 509 510 #include "solos-attrlist.c" 511 512 #undef SOLOS_ATTR_RO 513 #undef SOLOS_ATTR_RW 514 515 #define SOLOS_ATTR_RO(x) &dev_attr_##x.attr, 516 #define SOLOS_ATTR_RW(x) &dev_attr_##x.attr, 517 518 static struct attribute *solos_attrs[] = { 519 #include "solos-attrlist.c" 520 NULL 521 }; 522 523 static struct attribute_group solos_attr_group = { 524 .attrs = solos_attrs, 525 .name = "parameters", 526 }; 527 528 static int flash_upgrade(struct solos_card *card, int chip) 529 { 530 const struct firmware *fw; 531 const char *fw_name; 532 uint32_t data32 = 0; 533 int blocksize = 0; 534 int numblocks = 0; 535 int offset; 536 537 switch (chip) { 538 case 0: 539 fw_name = "solos-FPGA.bin"; 540 blocksize = FPGA_BLOCK; 541 break; 542 case 1: 543 fw_name = "solos-Firmware.bin"; 544 blocksize = SOLOS_BLOCK; 545 break; 546 case 2: 547 if (card->fpga_version > LEGACY_BUFFERS){ 548 fw_name = "solos-db-FPGA.bin"; 549 blocksize = FPGA_BLOCK; 550 } else { 551 dev_info(&card->dev->dev, "FPGA version doesn't support" 552 " daughter board upgrades\n"); 553 return -EPERM; 554 } 555 break; 556 case 3: 557 if (card->fpga_version > LEGACY_BUFFERS){ 558 fw_name = "solos-Firmware.bin"; 559 blocksize = SOLOS_BLOCK; 560 } else { 561 dev_info(&card->dev->dev, "FPGA version doesn't support" 562 " daughter board upgrades\n"); 563 return -EPERM; 564 } 565 break; 566 default: 567 return -ENODEV; 568 } 569 570 if (request_firmware(&fw, fw_name, &card->dev->dev)) 571 return -ENOENT; 572 573 dev_info(&card->dev->dev, "Flash upgrade starting\n"); 574 575 numblocks = fw->size / blocksize; 576 dev_info(&card->dev->dev, "Firmware size: %zd\n", fw->size); 577 dev_info(&card->dev->dev, "Number of blocks: %d\n", numblocks); 578 579 dev_info(&card->dev->dev, "Changing FPGA to Update mode\n"); 580 iowrite32(1, card->config_regs + FPGA_MODE); 581 data32 = ioread32(card->config_regs + FPGA_MODE); 582 583 /* Set mode to Chip Erase */ 584 if(chip == 0 || chip == 2) 585 dev_info(&card->dev->dev, "Set FPGA Flash mode to FPGA Chip Erase\n"); 586 if(chip == 1 || chip == 3) 587 dev_info(&card->dev->dev, "Set FPGA Flash mode to Solos Chip Erase\n"); 588 iowrite32((chip * 2), card->config_regs + FLASH_MODE); 589 590 591 iowrite32(1, card->config_regs + WRITE_FLASH); 592 wait_event(card->fw_wq, !ioread32(card->config_regs + FLASH_BUSY)); 593 594 for (offset = 0; offset < fw->size; offset += blocksize) { 595 int i; 596 597 /* Clear write flag */ 598 iowrite32(0, card->config_regs + WRITE_FLASH); 599 600 /* Set mode to Block Write */ 601 /* dev_info(&card->dev->dev, "Set FPGA Flash mode to Block Write\n"); */ 602 iowrite32(((chip * 2) + 1), card->config_regs + FLASH_MODE); 603 604 /* Copy block to buffer, swapping each 16 bits */ 605 for(i = 0; i < blocksize; i += 4) { 606 uint32_t word = swahb32p((uint32_t *)(fw->data + offset + i)); 607 if(card->fpga_version > LEGACY_BUFFERS) 608 iowrite32(word, FLASH_BUF + i); 609 else 610 iowrite32(word, RX_BUF(card, 3) + i); 611 } 612 613 /* Specify block number and then trigger flash write */ 614 iowrite32(offset / blocksize, card->config_regs + FLASH_BLOCK); 615 iowrite32(1, card->config_regs + WRITE_FLASH); 616 wait_event(card->fw_wq, !ioread32(card->config_regs + FLASH_BUSY)); 617 } 618 619 release_firmware(fw); 620 iowrite32(0, card->config_regs + WRITE_FLASH); 621 iowrite32(0, card->config_regs + FPGA_MODE); 622 iowrite32(0, card->config_regs + FLASH_MODE); 623 dev_info(&card->dev->dev, "Returning FPGA to Data mode\n"); 624 return 0; 625 } 626 627 static irqreturn_t solos_irq(int irq, void *dev_id) 628 { 629 struct solos_card *card = dev_id; 630 int handled = 1; 631 632 iowrite32(0, card->config_regs + IRQ_CLEAR); 633 634 /* If we're up and running, just kick the tasklet to process TX/RX */ 635 if (card->atmdev[0]) 636 tasklet_schedule(&card->tlet); 637 else 638 wake_up(&card->fw_wq); 639 640 return IRQ_RETVAL(handled); 641 } 642 643 void solos_bh(unsigned long card_arg) 644 { 645 struct solos_card *card = (void *)card_arg; 646 uint32_t card_flags; 647 uint32_t rx_done = 0; 648 int port; 649 650 /* 651 * Since fpga_tx() is going to need to read the flags under its lock, 652 * it can return them to us so that we don't have to hit PCI MMIO 653 * again for the same information 654 */ 655 card_flags = fpga_tx(card); 656 657 for (port = 0; port < card->nr_ports; port++) { 658 if (card_flags & (0x10 << port)) { 659 struct pkt_hdr _hdr, *header; 660 struct sk_buff *skb; 661 struct atm_vcc *vcc; 662 int size; 663 664 if (card->using_dma) { 665 skb = card->rx_skb[port]; 666 card->rx_skb[port] = NULL; 667 668 pci_unmap_single(card->dev, SKB_CB(skb)->dma_addr, 669 RX_DMA_SIZE, PCI_DMA_FROMDEVICE); 670 671 header = (void *)skb->data; 672 size = le16_to_cpu(header->size); 673 skb_put(skb, size + sizeof(*header)); 674 skb_pull(skb, sizeof(*header)); 675 } else { 676 header = &_hdr; 677 678 rx_done |= 0x10 << port; 679 680 memcpy_fromio(header, RX_BUF(card, port), sizeof(*header)); 681 682 size = le16_to_cpu(header->size); 683 if (size > (card->buffer_size - sizeof(*header))){ 684 dev_warn(&card->dev->dev, "Invalid buffer size\n"); 685 continue; 686 } 687 688 skb = alloc_skb(size + 1, GFP_ATOMIC); 689 if (!skb) { 690 if (net_ratelimit()) 691 dev_warn(&card->dev->dev, "Failed to allocate sk_buff for RX\n"); 692 continue; 693 } 694 695 memcpy_fromio(skb_put(skb, size), 696 RX_BUF(card, port) + sizeof(*header), 697 size); 698 } 699 if (atmdebug) { 700 dev_info(&card->dev->dev, "Received: port %d\n", port); 701 dev_info(&card->dev->dev, "size: %d VPI: %d VCI: %d\n", 702 size, le16_to_cpu(header->vpi), 703 le16_to_cpu(header->vci)); 704 print_buffer(skb); 705 } 706 707 switch (le16_to_cpu(header->type)) { 708 case PKT_DATA: 709 vcc = find_vcc(card->atmdev[port], le16_to_cpu(header->vpi), 710 le16_to_cpu(header->vci)); 711 if (!vcc) { 712 if (net_ratelimit()) 713 dev_warn(&card->dev->dev, "Received packet for unknown VPI.VCI %d.%d on port %d\n", 714 le16_to_cpu(header->vpi), le16_to_cpu(header->vci), 715 port); 716 continue; 717 } 718 atm_charge(vcc, skb->truesize); 719 vcc->push(vcc, skb); 720 atomic_inc(&vcc->stats->rx); 721 break; 722 723 case PKT_STATUS: 724 if (process_status(card, port, skb) && 725 net_ratelimit()) { 726 dev_warn(&card->dev->dev, "Bad status packet of %d bytes on port %d:\n", skb->len, port); 727 print_buffer(skb); 728 } 729 dev_kfree_skb_any(skb); 730 break; 731 732 case PKT_COMMAND: 733 default: /* FIXME: Not really, surely? */ 734 if (process_command(card, port, skb)) 735 break; 736 spin_lock(&card->cli_queue_lock); 737 if (skb_queue_len(&card->cli_queue[port]) > 10) { 738 if (net_ratelimit()) 739 dev_warn(&card->dev->dev, "Dropping console response on port %d\n", 740 port); 741 dev_kfree_skb_any(skb); 742 } else 743 skb_queue_tail(&card->cli_queue[port], skb); 744 spin_unlock(&card->cli_queue_lock); 745 break; 746 } 747 } 748 /* Allocate RX skbs for any ports which need them */ 749 if (card->using_dma && card->atmdev[port] && 750 !card->rx_skb[port]) { 751 struct sk_buff *skb = alloc_skb(RX_DMA_SIZE, GFP_ATOMIC); 752 if (skb) { 753 SKB_CB(skb)->dma_addr = 754 pci_map_single(card->dev, skb->data, 755 RX_DMA_SIZE, PCI_DMA_FROMDEVICE); 756 iowrite32(SKB_CB(skb)->dma_addr, 757 card->config_regs + RX_DMA_ADDR(port)); 758 card->rx_skb[port] = skb; 759 } else { 760 if (net_ratelimit()) 761 dev_warn(&card->dev->dev, "Failed to allocate RX skb"); 762 763 /* We'll have to try again later */ 764 tasklet_schedule(&card->tlet); 765 } 766 } 767 } 768 if (rx_done) 769 iowrite32(rx_done, card->config_regs + FLAGS_ADDR); 770 771 return; 772 } 773 774 static struct atm_vcc *find_vcc(struct atm_dev *dev, short vpi, int vci) 775 { 776 struct hlist_head *head; 777 struct atm_vcc *vcc = NULL; 778 struct hlist_node *node; 779 struct sock *s; 780 781 read_lock(&vcc_sklist_lock); 782 head = &vcc_hash[vci & (VCC_HTABLE_SIZE -1)]; 783 sk_for_each(s, node, head) { 784 vcc = atm_sk(s); 785 if (vcc->dev == dev && vcc->vci == vci && 786 vcc->vpi == vpi && vcc->qos.rxtp.traffic_class != ATM_NONE && 787 test_bit(ATM_VF_READY, &vcc->flags)) 788 goto out; 789 } 790 vcc = NULL; 791 out: 792 read_unlock(&vcc_sklist_lock); 793 return vcc; 794 } 795 796 static int list_vccs(int vci) 797 { 798 struct hlist_head *head; 799 struct atm_vcc *vcc; 800 struct hlist_node *node; 801 struct sock *s; 802 int num_found = 0; 803 int i; 804 805 read_lock(&vcc_sklist_lock); 806 if (vci != 0){ 807 head = &vcc_hash[vci & (VCC_HTABLE_SIZE -1)]; 808 sk_for_each(s, node, head) { 809 num_found ++; 810 vcc = atm_sk(s); 811 printk(KERN_DEBUG "Device: %d Vpi: %d Vci: %d\n", 812 vcc->dev->number, 813 vcc->vpi, 814 vcc->vci); 815 } 816 } else { 817 for(i = 0; i < VCC_HTABLE_SIZE; i++){ 818 head = &vcc_hash[i]; 819 sk_for_each(s, node, head) { 820 num_found ++; 821 vcc = atm_sk(s); 822 printk(KERN_DEBUG "Device: %d Vpi: %d Vci: %d\n", 823 vcc->dev->number, 824 vcc->vpi, 825 vcc->vci); 826 } 827 } 828 } 829 read_unlock(&vcc_sklist_lock); 830 return num_found; 831 } 832 833 static void release_vccs(struct atm_dev *dev) 834 { 835 int i; 836 837 write_lock_irq(&vcc_sklist_lock); 838 for (i = 0; i < VCC_HTABLE_SIZE; i++) { 839 struct hlist_head *head = &vcc_hash[i]; 840 struct hlist_node *node, *tmp; 841 struct sock *s; 842 struct atm_vcc *vcc; 843 844 sk_for_each_safe(s, node, tmp, head) { 845 vcc = atm_sk(s); 846 if (vcc->dev == dev) { 847 vcc_release_async(vcc, -EPIPE); 848 sk_del_node_init(s); 849 } 850 } 851 } 852 write_unlock_irq(&vcc_sklist_lock); 853 } 854 855 856 static int popen(struct atm_vcc *vcc) 857 { 858 struct solos_card *card = vcc->dev->dev_data; 859 struct sk_buff *skb; 860 struct pkt_hdr *header; 861 862 if (vcc->qos.aal != ATM_AAL5) { 863 dev_warn(&card->dev->dev, "Unsupported ATM type %d\n", 864 vcc->qos.aal); 865 return -EINVAL; 866 } 867 868 skb = alloc_skb(sizeof(*header), GFP_ATOMIC); 869 if (!skb) { 870 if (net_ratelimit()) 871 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in popen()\n"); 872 return -ENOMEM; 873 } 874 header = (void *)skb_put(skb, sizeof(*header)); 875 876 header->size = cpu_to_le16(0); 877 header->vpi = cpu_to_le16(vcc->vpi); 878 header->vci = cpu_to_le16(vcc->vci); 879 header->type = cpu_to_le16(PKT_POPEN); 880 881 fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, NULL); 882 883 set_bit(ATM_VF_ADDR, &vcc->flags); 884 set_bit(ATM_VF_READY, &vcc->flags); 885 list_vccs(0); 886 887 888 return 0; 889 } 890 891 static void pclose(struct atm_vcc *vcc) 892 { 893 struct solos_card *card = vcc->dev->dev_data; 894 struct sk_buff *skb; 895 struct pkt_hdr *header; 896 897 skb = alloc_skb(sizeof(*header), GFP_ATOMIC); 898 if (!skb) { 899 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in pclose()\n"); 900 return; 901 } 902 header = (void *)skb_put(skb, sizeof(*header)); 903 904 header->size = cpu_to_le16(0); 905 header->vpi = cpu_to_le16(vcc->vpi); 906 header->vci = cpu_to_le16(vcc->vci); 907 header->type = cpu_to_le16(PKT_PCLOSE); 908 909 fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, NULL); 910 911 clear_bit(ATM_VF_ADDR, &vcc->flags); 912 clear_bit(ATM_VF_READY, &vcc->flags); 913 914 /* Hold up vcc_destroy_socket() (our caller) until solos_bh() in the 915 tasklet has finished processing any incoming packets (and, more to 916 the point, using the vcc pointer). */ 917 tasklet_unlock_wait(&card->tlet); 918 return; 919 } 920 921 static int print_buffer(struct sk_buff *buf) 922 { 923 int len,i; 924 char msg[500]; 925 char item[10]; 926 927 len = buf->len; 928 for (i = 0; i < len; i++){ 929 if(i % 8 == 0) 930 sprintf(msg, "%02X: ", i); 931 932 sprintf(item,"%02X ",*(buf->data + i)); 933 strcat(msg, item); 934 if(i % 8 == 7) { 935 sprintf(item, "\n"); 936 strcat(msg, item); 937 printk(KERN_DEBUG "%s", msg); 938 } 939 } 940 if (i % 8 != 0) { 941 sprintf(item, "\n"); 942 strcat(msg, item); 943 printk(KERN_DEBUG "%s", msg); 944 } 945 printk(KERN_DEBUG "\n"); 946 947 return 0; 948 } 949 950 static void fpga_queue(struct solos_card *card, int port, struct sk_buff *skb, 951 struct atm_vcc *vcc) 952 { 953 int old_len; 954 unsigned long flags; 955 956 SKB_CB(skb)->vcc = vcc; 957 958 spin_lock_irqsave(&card->tx_queue_lock, flags); 959 old_len = skb_queue_len(&card->tx_queue[port]); 960 skb_queue_tail(&card->tx_queue[port], skb); 961 if (!old_len) 962 card->tx_mask |= (1 << port); 963 spin_unlock_irqrestore(&card->tx_queue_lock, flags); 964 965 /* Theoretically we could just schedule the tasklet here, but 966 that introduces latency we don't want -- it's noticeable */ 967 if (!old_len) 968 fpga_tx(card); 969 } 970 971 static uint32_t fpga_tx(struct solos_card *card) 972 { 973 uint32_t tx_pending, card_flags; 974 uint32_t tx_started = 0; 975 struct sk_buff *skb; 976 struct atm_vcc *vcc; 977 unsigned char port; 978 unsigned long flags; 979 980 spin_lock_irqsave(&card->tx_lock, flags); 981 982 card_flags = ioread32(card->config_regs + FLAGS_ADDR); 983 /* 984 * The queue lock is required for _writing_ to tx_mask, but we're 985 * OK to read it here without locking. The only potential update 986 * that we could race with is in fpga_queue() where it sets a bit 987 * for a new port... but it's going to call this function again if 988 * it's doing that, anyway. 989 */ 990 tx_pending = card->tx_mask & ~card_flags; 991 992 for (port = 0; tx_pending; tx_pending >>= 1, port++) { 993 if (tx_pending & 1) { 994 struct sk_buff *oldskb = card->tx_skb[port]; 995 if (oldskb) 996 pci_unmap_single(card->dev, SKB_CB(oldskb)->dma_addr, 997 oldskb->len, PCI_DMA_TODEVICE); 998 999 spin_lock(&card->tx_queue_lock); 1000 skb = skb_dequeue(&card->tx_queue[port]); 1001 if (!skb) 1002 card->tx_mask &= ~(1 << port); 1003 spin_unlock(&card->tx_queue_lock); 1004 1005 if (skb && !card->using_dma) { 1006 memcpy_toio(TX_BUF(card, port), skb->data, skb->len); 1007 tx_started |= 1 << port; 1008 oldskb = skb; /* We're done with this skb already */ 1009 } else if (skb && card->using_dma) { 1010 SKB_CB(skb)->dma_addr = pci_map_single(card->dev, skb->data, 1011 skb->len, PCI_DMA_TODEVICE); 1012 iowrite32(SKB_CB(skb)->dma_addr, 1013 card->config_regs + TX_DMA_ADDR(port)); 1014 } 1015 1016 if (!oldskb) 1017 continue; 1018 1019 /* Clean up and free oldskb now it's gone */ 1020 if (atmdebug) { 1021 struct pkt_hdr *header = (void *)oldskb->data; 1022 int size = le16_to_cpu(header->size); 1023 1024 skb_pull(oldskb, sizeof(*header)); 1025 dev_info(&card->dev->dev, "Transmitted: port %d\n", 1026 port); 1027 dev_info(&card->dev->dev, "size: %d VPI: %d VCI: %d\n", 1028 size, le16_to_cpu(header->vpi), 1029 le16_to_cpu(header->vci)); 1030 print_buffer(oldskb); 1031 } 1032 1033 vcc = SKB_CB(oldskb)->vcc; 1034 1035 if (vcc) { 1036 atomic_inc(&vcc->stats->tx); 1037 solos_pop(vcc, oldskb); 1038 } else 1039 dev_kfree_skb_irq(oldskb); 1040 1041 } 1042 } 1043 /* For non-DMA TX, write the 'TX start' bit for all four ports simultaneously */ 1044 if (tx_started) 1045 iowrite32(tx_started, card->config_regs + FLAGS_ADDR); 1046 1047 spin_unlock_irqrestore(&card->tx_lock, flags); 1048 return card_flags; 1049 } 1050 1051 static int psend(struct atm_vcc *vcc, struct sk_buff *skb) 1052 { 1053 struct solos_card *card = vcc->dev->dev_data; 1054 struct pkt_hdr *header; 1055 int pktlen; 1056 1057 pktlen = skb->len; 1058 if (pktlen > (BUF_SIZE - sizeof(*header))) { 1059 dev_warn(&card->dev->dev, "Length of PDU is too large. Dropping PDU.\n"); 1060 solos_pop(vcc, skb); 1061 return 0; 1062 } 1063 1064 if (!skb_clone_writable(skb, sizeof(*header))) { 1065 int expand_by = 0; 1066 int ret; 1067 1068 if (skb_headroom(skb) < sizeof(*header)) 1069 expand_by = sizeof(*header) - skb_headroom(skb); 1070 1071 ret = pskb_expand_head(skb, expand_by, 0, GFP_ATOMIC); 1072 if (ret) { 1073 dev_warn(&card->dev->dev, "pskb_expand_head failed.\n"); 1074 solos_pop(vcc, skb); 1075 return ret; 1076 } 1077 } 1078 1079 header = (void *)skb_push(skb, sizeof(*header)); 1080 1081 /* This does _not_ include the size of the header */ 1082 header->size = cpu_to_le16(pktlen); 1083 header->vpi = cpu_to_le16(vcc->vpi); 1084 header->vci = cpu_to_le16(vcc->vci); 1085 header->type = cpu_to_le16(PKT_DATA); 1086 1087 fpga_queue(card, SOLOS_CHAN(vcc->dev), skb, vcc); 1088 1089 return 0; 1090 } 1091 1092 static struct atmdev_ops fpga_ops = { 1093 .open = popen, 1094 .close = pclose, 1095 .ioctl = NULL, 1096 .getsockopt = NULL, 1097 .setsockopt = NULL, 1098 .send = psend, 1099 .send_oam = NULL, 1100 .phy_put = NULL, 1101 .phy_get = NULL, 1102 .change_qos = NULL, 1103 .proc_read = NULL, 1104 .owner = THIS_MODULE 1105 }; 1106 1107 static int fpga_probe(struct pci_dev *dev, const struct pci_device_id *id) 1108 { 1109 int err; 1110 uint16_t fpga_ver; 1111 uint8_t major_ver, minor_ver; 1112 uint32_t data32; 1113 struct solos_card *card; 1114 1115 card = kzalloc(sizeof(*card), GFP_KERNEL); 1116 if (!card) 1117 return -ENOMEM; 1118 1119 card->dev = dev; 1120 init_waitqueue_head(&card->fw_wq); 1121 init_waitqueue_head(&card->param_wq); 1122 1123 err = pci_enable_device(dev); 1124 if (err) { 1125 dev_warn(&dev->dev, "Failed to enable PCI device\n"); 1126 goto out; 1127 } 1128 1129 err = pci_set_dma_mask(dev, DMA_BIT_MASK(32)); 1130 if (err) { 1131 dev_warn(&dev->dev, "Failed to set 32-bit DMA mask\n"); 1132 goto out; 1133 } 1134 1135 err = pci_request_regions(dev, "solos"); 1136 if (err) { 1137 dev_warn(&dev->dev, "Failed to request regions\n"); 1138 goto out; 1139 } 1140 1141 card->config_regs = pci_iomap(dev, 0, CONFIG_RAM_SIZE); 1142 if (!card->config_regs) { 1143 dev_warn(&dev->dev, "Failed to ioremap config registers\n"); 1144 goto out_release_regions; 1145 } 1146 card->buffers = pci_iomap(dev, 1, DATA_RAM_SIZE); 1147 if (!card->buffers) { 1148 dev_warn(&dev->dev, "Failed to ioremap data buffers\n"); 1149 goto out_unmap_config; 1150 } 1151 1152 if (reset) { 1153 iowrite32(1, card->config_regs + FPGA_MODE); 1154 data32 = ioread32(card->config_regs + FPGA_MODE); 1155 1156 iowrite32(0, card->config_regs + FPGA_MODE); 1157 data32 = ioread32(card->config_regs + FPGA_MODE); 1158 } 1159 1160 data32 = ioread32(card->config_regs + FPGA_VER); 1161 fpga_ver = (data32 & 0x0000FFFF); 1162 major_ver = ((data32 & 0xFF000000) >> 24); 1163 minor_ver = ((data32 & 0x00FF0000) >> 16); 1164 card->fpga_version = FPGA_VERSION(major_ver,minor_ver); 1165 if (card->fpga_version > LEGACY_BUFFERS) 1166 card->buffer_size = BUF_SIZE; 1167 else 1168 card->buffer_size = OLD_BUF_SIZE; 1169 dev_info(&dev->dev, "Solos FPGA Version %d.%02d svn-%d\n", 1170 major_ver, minor_ver, fpga_ver); 1171 1172 if (fpga_ver < 37 && (fpga_upgrade || firmware_upgrade || 1173 db_fpga_upgrade || db_firmware_upgrade)) { 1174 dev_warn(&dev->dev, 1175 "FPGA too old; cannot upgrade flash. Use JTAG.\n"); 1176 fpga_upgrade = firmware_upgrade = 0; 1177 db_fpga_upgrade = db_firmware_upgrade = 0; 1178 } 1179 1180 if (card->fpga_version >= DMA_SUPPORTED){ 1181 card->using_dma = 1; 1182 } else { 1183 card->using_dma = 0; 1184 /* Set RX empty flag for all ports */ 1185 iowrite32(0xF0, card->config_regs + FLAGS_ADDR); 1186 } 1187 1188 data32 = ioread32(card->config_regs + PORTS); 1189 card->nr_ports = (data32 & 0x000000FF); 1190 1191 pci_set_drvdata(dev, card); 1192 1193 tasklet_init(&card->tlet, solos_bh, (unsigned long)card); 1194 spin_lock_init(&card->tx_lock); 1195 spin_lock_init(&card->tx_queue_lock); 1196 spin_lock_init(&card->cli_queue_lock); 1197 spin_lock_init(&card->param_queue_lock); 1198 INIT_LIST_HEAD(&card->param_queue); 1199 1200 err = request_irq(dev->irq, solos_irq, IRQF_SHARED, 1201 "solos-pci", card); 1202 if (err) { 1203 dev_dbg(&card->dev->dev, "Failed to request interrupt IRQ: %d\n", dev->irq); 1204 goto out_unmap_both; 1205 } 1206 1207 iowrite32(1, card->config_regs + IRQ_EN_ADDR); 1208 1209 if (fpga_upgrade) 1210 flash_upgrade(card, 0); 1211 1212 if (firmware_upgrade) 1213 flash_upgrade(card, 1); 1214 1215 if (db_fpga_upgrade) 1216 flash_upgrade(card, 2); 1217 1218 if (db_firmware_upgrade) 1219 flash_upgrade(card, 3); 1220 1221 err = atm_init(card, &dev->dev); 1222 if (err) 1223 goto out_free_irq; 1224 1225 return 0; 1226 1227 out_free_irq: 1228 iowrite32(0, card->config_regs + IRQ_EN_ADDR); 1229 free_irq(dev->irq, card); 1230 tasklet_kill(&card->tlet); 1231 1232 out_unmap_both: 1233 pci_set_drvdata(dev, NULL); 1234 pci_iounmap(dev, card->config_regs); 1235 out_unmap_config: 1236 pci_iounmap(dev, card->buffers); 1237 out_release_regions: 1238 pci_release_regions(dev); 1239 out: 1240 kfree(card); 1241 return err; 1242 } 1243 1244 static int atm_init(struct solos_card *card, struct device *parent) 1245 { 1246 int i; 1247 1248 for (i = 0; i < card->nr_ports; i++) { 1249 struct sk_buff *skb; 1250 struct pkt_hdr *header; 1251 1252 skb_queue_head_init(&card->tx_queue[i]); 1253 skb_queue_head_init(&card->cli_queue[i]); 1254 1255 card->atmdev[i] = atm_dev_register("solos-pci", parent, &fpga_ops, -1, NULL); 1256 if (!card->atmdev[i]) { 1257 dev_err(&card->dev->dev, "Could not register ATM device %d\n", i); 1258 atm_remove(card); 1259 return -ENODEV; 1260 } 1261 if (device_create_file(&card->atmdev[i]->class_dev, &dev_attr_console)) 1262 dev_err(&card->dev->dev, "Could not register console for ATM device %d\n", i); 1263 if (sysfs_create_group(&card->atmdev[i]->class_dev.kobj, &solos_attr_group)) 1264 dev_err(&card->dev->dev, "Could not register parameter group for ATM device %d\n", i); 1265 1266 dev_info(&card->dev->dev, "Registered ATM device %d\n", card->atmdev[i]->number); 1267 1268 card->atmdev[i]->ci_range.vpi_bits = 8; 1269 card->atmdev[i]->ci_range.vci_bits = 16; 1270 card->atmdev[i]->dev_data = card; 1271 card->atmdev[i]->phy_data = (void *)(unsigned long)i; 1272 atm_dev_signal_change(card->atmdev[i], ATM_PHY_SIG_UNKNOWN); 1273 1274 skb = alloc_skb(sizeof(*header), GFP_ATOMIC); 1275 if (!skb) { 1276 dev_warn(&card->dev->dev, "Failed to allocate sk_buff in atm_init()\n"); 1277 continue; 1278 } 1279 1280 header = (void *)skb_put(skb, sizeof(*header)); 1281 1282 header->size = cpu_to_le16(0); 1283 header->vpi = cpu_to_le16(0); 1284 header->vci = cpu_to_le16(0); 1285 header->type = cpu_to_le16(PKT_STATUS); 1286 1287 fpga_queue(card, i, skb, NULL); 1288 } 1289 return 0; 1290 } 1291 1292 static void atm_remove(struct solos_card *card) 1293 { 1294 int i; 1295 1296 for (i = 0; i < card->nr_ports; i++) { 1297 if (card->atmdev[i]) { 1298 struct sk_buff *skb; 1299 1300 dev_info(&card->dev->dev, "Unregistering ATM device %d\n", card->atmdev[i]->number); 1301 1302 sysfs_remove_group(&card->atmdev[i]->class_dev.kobj, &solos_attr_group); 1303 atm_dev_deregister(card->atmdev[i]); 1304 1305 skb = card->rx_skb[i]; 1306 if (skb) { 1307 pci_unmap_single(card->dev, SKB_CB(skb)->dma_addr, 1308 RX_DMA_SIZE, PCI_DMA_FROMDEVICE); 1309 dev_kfree_skb(skb); 1310 } 1311 skb = card->tx_skb[i]; 1312 if (skb) { 1313 pci_unmap_single(card->dev, SKB_CB(skb)->dma_addr, 1314 skb->len, PCI_DMA_TODEVICE); 1315 dev_kfree_skb(skb); 1316 } 1317 while ((skb = skb_dequeue(&card->tx_queue[i]))) 1318 dev_kfree_skb(skb); 1319 1320 } 1321 } 1322 } 1323 1324 static void fpga_remove(struct pci_dev *dev) 1325 { 1326 struct solos_card *card = pci_get_drvdata(dev); 1327 1328 /* Disable IRQs */ 1329 iowrite32(0, card->config_regs + IRQ_EN_ADDR); 1330 1331 /* Reset FPGA */ 1332 iowrite32(1, card->config_regs + FPGA_MODE); 1333 (void)ioread32(card->config_regs + FPGA_MODE); 1334 1335 atm_remove(card); 1336 1337 free_irq(dev->irq, card); 1338 tasklet_kill(&card->tlet); 1339 1340 /* Release device from reset */ 1341 iowrite32(0, card->config_regs + FPGA_MODE); 1342 (void)ioread32(card->config_regs + FPGA_MODE); 1343 1344 pci_iounmap(dev, card->buffers); 1345 pci_iounmap(dev, card->config_regs); 1346 1347 pci_release_regions(dev); 1348 pci_disable_device(dev); 1349 1350 pci_set_drvdata(dev, NULL); 1351 kfree(card); 1352 } 1353 1354 static struct pci_device_id fpga_pci_tbl[] __devinitdata = { 1355 { 0x10ee, 0x0300, PCI_ANY_ID, PCI_ANY_ID, 0, 0, 0 }, 1356 { 0, } 1357 }; 1358 1359 MODULE_DEVICE_TABLE(pci,fpga_pci_tbl); 1360 1361 static struct pci_driver fpga_driver = { 1362 .name = "solos", 1363 .id_table = fpga_pci_tbl, 1364 .probe = fpga_probe, 1365 .remove = fpga_remove, 1366 }; 1367 1368 1369 static int __init solos_pci_init(void) 1370 { 1371 printk(KERN_INFO "Solos PCI Driver Version %s\n", VERSION); 1372 return pci_register_driver(&fpga_driver); 1373 } 1374 1375 static void __exit solos_pci_exit(void) 1376 { 1377 pci_unregister_driver(&fpga_driver); 1378 printk(KERN_INFO "Solos PCI Driver %s Unloaded\n", VERSION); 1379 } 1380 1381 module_init(solos_pci_init); 1382 module_exit(solos_pci_exit); 1383