1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Microsemi Switchtec(tm) PCIe Management Driver 4 * Copyright (c) 2017, Microsemi Corporation 5 */ 6 7 #include <linux/switchtec.h> 8 #include <linux/switchtec_ioctl.h> 9 10 #include <linux/interrupt.h> 11 #include <linux/module.h> 12 #include <linux/fs.h> 13 #include <linux/uaccess.h> 14 #include <linux/poll.h> 15 #include <linux/wait.h> 16 #include <linux/io-64-nonatomic-lo-hi.h> 17 #include <linux/nospec.h> 18 19 MODULE_DESCRIPTION("Microsemi Switchtec(tm) PCIe Management Driver"); 20 MODULE_VERSION("0.1"); 21 MODULE_LICENSE("GPL"); 22 MODULE_AUTHOR("Microsemi Corporation"); 23 24 static int max_devices = 16; 25 module_param(max_devices, int, 0644); 26 MODULE_PARM_DESC(max_devices, "max number of switchtec device instances"); 27 28 static bool use_dma_mrpc = true; 29 module_param(use_dma_mrpc, bool, 0644); 30 MODULE_PARM_DESC(use_dma_mrpc, 31 "Enable the use of the DMA MRPC feature"); 32 33 static int nirqs = 32; 34 module_param(nirqs, int, 0644); 35 MODULE_PARM_DESC(nirqs, "number of interrupts to allocate (more may be useful for NTB applications)"); 36 37 static dev_t switchtec_devt; 38 static DEFINE_IDA(switchtec_minor_ida); 39 40 struct class *switchtec_class; 41 EXPORT_SYMBOL_GPL(switchtec_class); 42 43 enum mrpc_state { 44 MRPC_IDLE = 0, 45 MRPC_QUEUED, 46 MRPC_RUNNING, 47 MRPC_DONE, 48 MRPC_IO_ERROR, 49 }; 50 51 struct switchtec_user { 52 struct switchtec_dev *stdev; 53 54 enum mrpc_state state; 55 56 wait_queue_head_t cmd_comp; 57 struct kref kref; 58 struct list_head list; 59 60 bool cmd_done; 61 u32 cmd; 62 u32 status; 63 u32 return_code; 64 size_t data_len; 65 size_t read_len; 66 unsigned char data[SWITCHTEC_MRPC_PAYLOAD_SIZE]; 67 int event_cnt; 68 }; 69 70 /* 71 * The MMIO reads to the device_id register should always return the device ID 72 * of the device, otherwise the firmware is probably stuck or unreachable 73 * due to a firmware reset which clears PCI state including the BARs and Memory 74 * Space Enable bits. 75 */ 76 static int is_firmware_running(struct switchtec_dev *stdev) 77 { 78 u32 device = ioread32(&stdev->mmio_sys_info->device_id); 79 80 return stdev->pdev->device == device; 81 } 82 83 static struct switchtec_user *stuser_create(struct switchtec_dev *stdev) 84 { 85 struct switchtec_user *stuser; 86 87 stuser = kzalloc(sizeof(*stuser), GFP_KERNEL); 88 if (!stuser) 89 return ERR_PTR(-ENOMEM); 90 91 get_device(&stdev->dev); 92 stuser->stdev = stdev; 93 kref_init(&stuser->kref); 94 INIT_LIST_HEAD(&stuser->list); 95 init_waitqueue_head(&stuser->cmd_comp); 96 stuser->event_cnt = atomic_read(&stdev->event_cnt); 97 98 dev_dbg(&stdev->dev, "%s: %p\n", __func__, stuser); 99 100 return stuser; 101 } 102 103 static void stuser_free(struct kref *kref) 104 { 105 struct switchtec_user *stuser; 106 107 stuser = container_of(kref, struct switchtec_user, kref); 108 109 dev_dbg(&stuser->stdev->dev, "%s: %p\n", __func__, stuser); 110 111 put_device(&stuser->stdev->dev); 112 kfree(stuser); 113 } 114 115 static void stuser_put(struct switchtec_user *stuser) 116 { 117 kref_put(&stuser->kref, stuser_free); 118 } 119 120 static void stuser_set_state(struct switchtec_user *stuser, 121 enum mrpc_state state) 122 { 123 /* requires the mrpc_mutex to already be held when called */ 124 125 static const char * const state_names[] = { 126 [MRPC_IDLE] = "IDLE", 127 [MRPC_QUEUED] = "QUEUED", 128 [MRPC_RUNNING] = "RUNNING", 129 [MRPC_DONE] = "DONE", 130 [MRPC_IO_ERROR] = "IO_ERROR", 131 }; 132 133 stuser->state = state; 134 135 dev_dbg(&stuser->stdev->dev, "stuser state %p -> %s", 136 stuser, state_names[state]); 137 } 138 139 static void mrpc_complete_cmd(struct switchtec_dev *stdev); 140 141 static void flush_wc_buf(struct switchtec_dev *stdev) 142 { 143 struct ntb_dbmsg_regs __iomem *mmio_dbmsg; 144 145 /* 146 * odb (outbound doorbell) register is processed by low latency 147 * hardware and w/o side effect 148 */ 149 mmio_dbmsg = (void __iomem *)stdev->mmio_ntb + 150 SWITCHTEC_NTB_REG_DBMSG_OFFSET; 151 ioread32(&mmio_dbmsg->odb); 152 } 153 154 static void mrpc_cmd_submit(struct switchtec_dev *stdev) 155 { 156 /* requires the mrpc_mutex to already be held when called */ 157 158 struct switchtec_user *stuser; 159 160 if (stdev->mrpc_busy) 161 return; 162 163 if (list_empty(&stdev->mrpc_queue)) 164 return; 165 166 stuser = list_entry(stdev->mrpc_queue.next, struct switchtec_user, 167 list); 168 169 if (stdev->dma_mrpc) { 170 stdev->dma_mrpc->status = SWITCHTEC_MRPC_STATUS_INPROGRESS; 171 memset(stdev->dma_mrpc->data, 0xFF, SWITCHTEC_MRPC_PAYLOAD_SIZE); 172 } 173 174 stuser_set_state(stuser, MRPC_RUNNING); 175 stdev->mrpc_busy = 1; 176 memcpy_toio(&stdev->mmio_mrpc->input_data, 177 stuser->data, stuser->data_len); 178 flush_wc_buf(stdev); 179 iowrite32(stuser->cmd, &stdev->mmio_mrpc->cmd); 180 181 schedule_delayed_work(&stdev->mrpc_timeout, 182 msecs_to_jiffies(500)); 183 } 184 185 static int mrpc_queue_cmd(struct switchtec_user *stuser) 186 { 187 /* requires the mrpc_mutex to already be held when called */ 188 189 struct switchtec_dev *stdev = stuser->stdev; 190 191 kref_get(&stuser->kref); 192 stuser->read_len = sizeof(stuser->data); 193 stuser_set_state(stuser, MRPC_QUEUED); 194 stuser->cmd_done = false; 195 list_add_tail(&stuser->list, &stdev->mrpc_queue); 196 197 mrpc_cmd_submit(stdev); 198 199 return 0; 200 } 201 202 static void mrpc_cleanup_cmd(struct switchtec_dev *stdev) 203 { 204 /* requires the mrpc_mutex to already be held when called */ 205 206 struct switchtec_user *stuser = list_entry(stdev->mrpc_queue.next, 207 struct switchtec_user, list); 208 209 stuser->cmd_done = true; 210 wake_up_interruptible(&stuser->cmd_comp); 211 list_del_init(&stuser->list); 212 stuser_put(stuser); 213 stdev->mrpc_busy = 0; 214 215 mrpc_cmd_submit(stdev); 216 } 217 218 static void mrpc_complete_cmd(struct switchtec_dev *stdev) 219 { 220 /* requires the mrpc_mutex to already be held when called */ 221 222 struct switchtec_user *stuser; 223 224 if (list_empty(&stdev->mrpc_queue)) 225 return; 226 227 stuser = list_entry(stdev->mrpc_queue.next, struct switchtec_user, 228 list); 229 230 if (stdev->dma_mrpc) 231 stuser->status = stdev->dma_mrpc->status; 232 else 233 stuser->status = ioread32(&stdev->mmio_mrpc->status); 234 235 if (stuser->status == SWITCHTEC_MRPC_STATUS_INPROGRESS) 236 return; 237 238 stuser_set_state(stuser, MRPC_DONE); 239 stuser->return_code = 0; 240 241 if (stuser->status != SWITCHTEC_MRPC_STATUS_DONE && 242 stuser->status != SWITCHTEC_MRPC_STATUS_ERROR) 243 goto out; 244 245 if (stdev->dma_mrpc) 246 stuser->return_code = stdev->dma_mrpc->rtn_code; 247 else 248 stuser->return_code = ioread32(&stdev->mmio_mrpc->ret_value); 249 if (stuser->return_code != 0) 250 goto out; 251 252 if (stdev->dma_mrpc) 253 memcpy(stuser->data, &stdev->dma_mrpc->data, 254 stuser->read_len); 255 else 256 memcpy_fromio(stuser->data, &stdev->mmio_mrpc->output_data, 257 stuser->read_len); 258 out: 259 mrpc_cleanup_cmd(stdev); 260 } 261 262 static void mrpc_event_work(struct work_struct *work) 263 { 264 struct switchtec_dev *stdev; 265 266 stdev = container_of(work, struct switchtec_dev, mrpc_work); 267 268 dev_dbg(&stdev->dev, "%s\n", __func__); 269 270 mutex_lock(&stdev->mrpc_mutex); 271 cancel_delayed_work(&stdev->mrpc_timeout); 272 mrpc_complete_cmd(stdev); 273 mutex_unlock(&stdev->mrpc_mutex); 274 } 275 276 static void mrpc_error_complete_cmd(struct switchtec_dev *stdev) 277 { 278 /* requires the mrpc_mutex to already be held when called */ 279 280 struct switchtec_user *stuser; 281 282 if (list_empty(&stdev->mrpc_queue)) 283 return; 284 285 stuser = list_entry(stdev->mrpc_queue.next, 286 struct switchtec_user, list); 287 288 stuser_set_state(stuser, MRPC_IO_ERROR); 289 290 mrpc_cleanup_cmd(stdev); 291 } 292 293 static void mrpc_timeout_work(struct work_struct *work) 294 { 295 struct switchtec_dev *stdev; 296 u32 status; 297 298 stdev = container_of(work, struct switchtec_dev, mrpc_timeout.work); 299 300 dev_dbg(&stdev->dev, "%s\n", __func__); 301 302 mutex_lock(&stdev->mrpc_mutex); 303 304 if (!is_firmware_running(stdev)) { 305 mrpc_error_complete_cmd(stdev); 306 goto out; 307 } 308 309 if (stdev->dma_mrpc) 310 status = stdev->dma_mrpc->status; 311 else 312 status = ioread32(&stdev->mmio_mrpc->status); 313 if (status == SWITCHTEC_MRPC_STATUS_INPROGRESS) { 314 schedule_delayed_work(&stdev->mrpc_timeout, 315 msecs_to_jiffies(500)); 316 goto out; 317 } 318 319 mrpc_complete_cmd(stdev); 320 out: 321 mutex_unlock(&stdev->mrpc_mutex); 322 } 323 324 static ssize_t device_version_show(struct device *dev, 325 struct device_attribute *attr, char *buf) 326 { 327 struct switchtec_dev *stdev = to_stdev(dev); 328 u32 ver; 329 330 ver = ioread32(&stdev->mmio_sys_info->device_version); 331 332 return sysfs_emit(buf, "%x\n", ver); 333 } 334 static DEVICE_ATTR_RO(device_version); 335 336 static ssize_t fw_version_show(struct device *dev, 337 struct device_attribute *attr, char *buf) 338 { 339 struct switchtec_dev *stdev = to_stdev(dev); 340 u32 ver; 341 342 ver = ioread32(&stdev->mmio_sys_info->firmware_version); 343 344 return sysfs_emit(buf, "%08x\n", ver); 345 } 346 static DEVICE_ATTR_RO(fw_version); 347 348 static ssize_t io_string_show(char *buf, void __iomem *attr, size_t len) 349 { 350 int i; 351 352 memcpy_fromio(buf, attr, len); 353 buf[len] = '\n'; 354 buf[len + 1] = 0; 355 356 for (i = len - 1; i > 0; i--) { 357 if (buf[i] != ' ') 358 break; 359 buf[i] = '\n'; 360 buf[i + 1] = 0; 361 } 362 363 return strlen(buf); 364 } 365 366 #define DEVICE_ATTR_SYS_INFO_STR(field) \ 367 static ssize_t field ## _show(struct device *dev, \ 368 struct device_attribute *attr, char *buf) \ 369 { \ 370 struct switchtec_dev *stdev = to_stdev(dev); \ 371 struct sys_info_regs __iomem *si = stdev->mmio_sys_info; \ 372 if (stdev->gen == SWITCHTEC_GEN3) \ 373 return io_string_show(buf, &si->gen3.field, \ 374 sizeof(si->gen3.field)); \ 375 else if (stdev->gen == SWITCHTEC_GEN4) \ 376 return io_string_show(buf, &si->gen4.field, \ 377 sizeof(si->gen4.field)); \ 378 else \ 379 return -EOPNOTSUPP; \ 380 } \ 381 \ 382 static DEVICE_ATTR_RO(field) 383 384 DEVICE_ATTR_SYS_INFO_STR(vendor_id); 385 DEVICE_ATTR_SYS_INFO_STR(product_id); 386 DEVICE_ATTR_SYS_INFO_STR(product_revision); 387 388 static ssize_t component_vendor_show(struct device *dev, 389 struct device_attribute *attr, char *buf) 390 { 391 struct switchtec_dev *stdev = to_stdev(dev); 392 struct sys_info_regs __iomem *si = stdev->mmio_sys_info; 393 394 /* component_vendor field not supported after gen3 */ 395 if (stdev->gen != SWITCHTEC_GEN3) 396 return sysfs_emit(buf, "none\n"); 397 398 return io_string_show(buf, &si->gen3.component_vendor, 399 sizeof(si->gen3.component_vendor)); 400 } 401 static DEVICE_ATTR_RO(component_vendor); 402 403 static ssize_t component_id_show(struct device *dev, 404 struct device_attribute *attr, char *buf) 405 { 406 struct switchtec_dev *stdev = to_stdev(dev); 407 int id = ioread16(&stdev->mmio_sys_info->gen3.component_id); 408 409 /* component_id field not supported after gen3 */ 410 if (stdev->gen != SWITCHTEC_GEN3) 411 return sysfs_emit(buf, "none\n"); 412 413 return sysfs_emit(buf, "PM%04X\n", id); 414 } 415 static DEVICE_ATTR_RO(component_id); 416 417 static ssize_t component_revision_show(struct device *dev, 418 struct device_attribute *attr, char *buf) 419 { 420 struct switchtec_dev *stdev = to_stdev(dev); 421 int rev = ioread8(&stdev->mmio_sys_info->gen3.component_revision); 422 423 /* component_revision field not supported after gen3 */ 424 if (stdev->gen != SWITCHTEC_GEN3) 425 return sysfs_emit(buf, "255\n"); 426 427 return sysfs_emit(buf, "%d\n", rev); 428 } 429 static DEVICE_ATTR_RO(component_revision); 430 431 static ssize_t partition_show(struct device *dev, 432 struct device_attribute *attr, char *buf) 433 { 434 struct switchtec_dev *stdev = to_stdev(dev); 435 436 return sysfs_emit(buf, "%d\n", stdev->partition); 437 } 438 static DEVICE_ATTR_RO(partition); 439 440 static ssize_t partition_count_show(struct device *dev, 441 struct device_attribute *attr, char *buf) 442 { 443 struct switchtec_dev *stdev = to_stdev(dev); 444 445 return sysfs_emit(buf, "%d\n", stdev->partition_count); 446 } 447 static DEVICE_ATTR_RO(partition_count); 448 449 static struct attribute *switchtec_device_attrs[] = { 450 &dev_attr_device_version.attr, 451 &dev_attr_fw_version.attr, 452 &dev_attr_vendor_id.attr, 453 &dev_attr_product_id.attr, 454 &dev_attr_product_revision.attr, 455 &dev_attr_component_vendor.attr, 456 &dev_attr_component_id.attr, 457 &dev_attr_component_revision.attr, 458 &dev_attr_partition.attr, 459 &dev_attr_partition_count.attr, 460 NULL, 461 }; 462 463 ATTRIBUTE_GROUPS(switchtec_device); 464 465 static int switchtec_dev_open(struct inode *inode, struct file *filp) 466 { 467 struct switchtec_dev *stdev; 468 struct switchtec_user *stuser; 469 470 stdev = container_of(inode->i_cdev, struct switchtec_dev, cdev); 471 472 stuser = stuser_create(stdev); 473 if (IS_ERR(stuser)) 474 return PTR_ERR(stuser); 475 476 filp->private_data = stuser; 477 stream_open(inode, filp); 478 479 dev_dbg(&stdev->dev, "%s: %p\n", __func__, stuser); 480 481 return 0; 482 } 483 484 static int switchtec_dev_release(struct inode *inode, struct file *filp) 485 { 486 struct switchtec_user *stuser = filp->private_data; 487 488 stuser_put(stuser); 489 490 return 0; 491 } 492 493 static int lock_mutex_and_test_alive(struct switchtec_dev *stdev) 494 { 495 if (mutex_lock_interruptible(&stdev->mrpc_mutex)) 496 return -EINTR; 497 498 if (!stdev->alive) { 499 mutex_unlock(&stdev->mrpc_mutex); 500 return -ENODEV; 501 } 502 503 return 0; 504 } 505 506 static ssize_t switchtec_dev_write(struct file *filp, const char __user *data, 507 size_t size, loff_t *off) 508 { 509 struct switchtec_user *stuser = filp->private_data; 510 struct switchtec_dev *stdev = stuser->stdev; 511 int rc; 512 513 if (size < sizeof(stuser->cmd) || 514 size > sizeof(stuser->cmd) + sizeof(stuser->data)) 515 return -EINVAL; 516 517 stuser->data_len = size - sizeof(stuser->cmd); 518 519 rc = lock_mutex_and_test_alive(stdev); 520 if (rc) 521 return rc; 522 523 if (stuser->state != MRPC_IDLE) { 524 rc = -EBADE; 525 goto out; 526 } 527 528 rc = copy_from_user(&stuser->cmd, data, sizeof(stuser->cmd)); 529 if (rc) { 530 rc = -EFAULT; 531 goto out; 532 } 533 if (((MRPC_CMD_ID(stuser->cmd) == MRPC_GAS_WRITE) || 534 (MRPC_CMD_ID(stuser->cmd) == MRPC_GAS_READ)) && 535 !capable(CAP_SYS_ADMIN)) { 536 rc = -EPERM; 537 goto out; 538 } 539 540 data += sizeof(stuser->cmd); 541 rc = copy_from_user(&stuser->data, data, size - sizeof(stuser->cmd)); 542 if (rc) { 543 rc = -EFAULT; 544 goto out; 545 } 546 547 rc = mrpc_queue_cmd(stuser); 548 549 out: 550 mutex_unlock(&stdev->mrpc_mutex); 551 552 if (rc) 553 return rc; 554 555 return size; 556 } 557 558 static ssize_t switchtec_dev_read(struct file *filp, char __user *data, 559 size_t size, loff_t *off) 560 { 561 struct switchtec_user *stuser = filp->private_data; 562 struct switchtec_dev *stdev = stuser->stdev; 563 int rc; 564 565 if (size < sizeof(stuser->cmd) || 566 size > sizeof(stuser->cmd) + sizeof(stuser->data)) 567 return -EINVAL; 568 569 rc = lock_mutex_and_test_alive(stdev); 570 if (rc) 571 return rc; 572 573 if (stuser->state == MRPC_IDLE) { 574 mutex_unlock(&stdev->mrpc_mutex); 575 return -EBADE; 576 } 577 578 stuser->read_len = size - sizeof(stuser->return_code); 579 580 mutex_unlock(&stdev->mrpc_mutex); 581 582 if (filp->f_flags & O_NONBLOCK) { 583 if (!stuser->cmd_done) 584 return -EAGAIN; 585 } else { 586 rc = wait_event_interruptible(stuser->cmd_comp, 587 stuser->cmd_done); 588 if (rc < 0) 589 return rc; 590 } 591 592 rc = lock_mutex_and_test_alive(stdev); 593 if (rc) 594 return rc; 595 596 if (stuser->state == MRPC_IO_ERROR) { 597 mutex_unlock(&stdev->mrpc_mutex); 598 return -EIO; 599 } 600 601 if (stuser->state != MRPC_DONE) { 602 mutex_unlock(&stdev->mrpc_mutex); 603 return -EBADE; 604 } 605 606 rc = copy_to_user(data, &stuser->return_code, 607 sizeof(stuser->return_code)); 608 if (rc) { 609 mutex_unlock(&stdev->mrpc_mutex); 610 return -EFAULT; 611 } 612 613 data += sizeof(stuser->return_code); 614 rc = copy_to_user(data, &stuser->data, 615 size - sizeof(stuser->return_code)); 616 if (rc) { 617 mutex_unlock(&stdev->mrpc_mutex); 618 return -EFAULT; 619 } 620 621 stuser_set_state(stuser, MRPC_IDLE); 622 623 mutex_unlock(&stdev->mrpc_mutex); 624 625 if (stuser->status == SWITCHTEC_MRPC_STATUS_DONE || 626 stuser->status == SWITCHTEC_MRPC_STATUS_ERROR) 627 return size; 628 else if (stuser->status == SWITCHTEC_MRPC_STATUS_INTERRUPTED) 629 return -ENXIO; 630 else 631 return -EBADMSG; 632 } 633 634 static __poll_t switchtec_dev_poll(struct file *filp, poll_table *wait) 635 { 636 struct switchtec_user *stuser = filp->private_data; 637 struct switchtec_dev *stdev = stuser->stdev; 638 __poll_t ret = 0; 639 640 poll_wait(filp, &stuser->cmd_comp, wait); 641 poll_wait(filp, &stdev->event_wq, wait); 642 643 if (lock_mutex_and_test_alive(stdev)) 644 return EPOLLIN | EPOLLRDHUP | EPOLLOUT | EPOLLERR | EPOLLHUP; 645 646 mutex_unlock(&stdev->mrpc_mutex); 647 648 if (stuser->cmd_done) 649 ret |= EPOLLIN | EPOLLRDNORM; 650 651 if (stuser->event_cnt != atomic_read(&stdev->event_cnt)) 652 ret |= EPOLLPRI | EPOLLRDBAND; 653 654 return ret; 655 } 656 657 static int ioctl_flash_info(struct switchtec_dev *stdev, 658 struct switchtec_ioctl_flash_info __user *uinfo) 659 { 660 struct switchtec_ioctl_flash_info info = {0}; 661 struct flash_info_regs __iomem *fi = stdev->mmio_flash_info; 662 663 if (stdev->gen == SWITCHTEC_GEN3) { 664 info.flash_length = ioread32(&fi->gen3.flash_length); 665 info.num_partitions = SWITCHTEC_NUM_PARTITIONS_GEN3; 666 } else if (stdev->gen == SWITCHTEC_GEN4) { 667 info.flash_length = ioread32(&fi->gen4.flash_length); 668 info.num_partitions = SWITCHTEC_NUM_PARTITIONS_GEN4; 669 } else { 670 return -EOPNOTSUPP; 671 } 672 673 if (copy_to_user(uinfo, &info, sizeof(info))) 674 return -EFAULT; 675 676 return 0; 677 } 678 679 static void set_fw_info_part(struct switchtec_ioctl_flash_part_info *info, 680 struct partition_info __iomem *pi) 681 { 682 info->address = ioread32(&pi->address); 683 info->length = ioread32(&pi->length); 684 } 685 686 static int flash_part_info_gen3(struct switchtec_dev *stdev, 687 struct switchtec_ioctl_flash_part_info *info) 688 { 689 struct flash_info_regs_gen3 __iomem *fi = 690 &stdev->mmio_flash_info->gen3; 691 struct sys_info_regs_gen3 __iomem *si = &stdev->mmio_sys_info->gen3; 692 u32 active_addr = -1; 693 694 switch (info->flash_partition) { 695 case SWITCHTEC_IOCTL_PART_CFG0: 696 active_addr = ioread32(&fi->active_cfg); 697 set_fw_info_part(info, &fi->cfg0); 698 if (ioread16(&si->cfg_running) == SWITCHTEC_GEN3_CFG0_RUNNING) 699 info->active |= SWITCHTEC_IOCTL_PART_RUNNING; 700 break; 701 case SWITCHTEC_IOCTL_PART_CFG1: 702 active_addr = ioread32(&fi->active_cfg); 703 set_fw_info_part(info, &fi->cfg1); 704 if (ioread16(&si->cfg_running) == SWITCHTEC_GEN3_CFG1_RUNNING) 705 info->active |= SWITCHTEC_IOCTL_PART_RUNNING; 706 break; 707 case SWITCHTEC_IOCTL_PART_IMG0: 708 active_addr = ioread32(&fi->active_img); 709 set_fw_info_part(info, &fi->img0); 710 if (ioread16(&si->img_running) == SWITCHTEC_GEN3_IMG0_RUNNING) 711 info->active |= SWITCHTEC_IOCTL_PART_RUNNING; 712 break; 713 case SWITCHTEC_IOCTL_PART_IMG1: 714 active_addr = ioread32(&fi->active_img); 715 set_fw_info_part(info, &fi->img1); 716 if (ioread16(&si->img_running) == SWITCHTEC_GEN3_IMG1_RUNNING) 717 info->active |= SWITCHTEC_IOCTL_PART_RUNNING; 718 break; 719 case SWITCHTEC_IOCTL_PART_NVLOG: 720 set_fw_info_part(info, &fi->nvlog); 721 break; 722 case SWITCHTEC_IOCTL_PART_VENDOR0: 723 set_fw_info_part(info, &fi->vendor[0]); 724 break; 725 case SWITCHTEC_IOCTL_PART_VENDOR1: 726 set_fw_info_part(info, &fi->vendor[1]); 727 break; 728 case SWITCHTEC_IOCTL_PART_VENDOR2: 729 set_fw_info_part(info, &fi->vendor[2]); 730 break; 731 case SWITCHTEC_IOCTL_PART_VENDOR3: 732 set_fw_info_part(info, &fi->vendor[3]); 733 break; 734 case SWITCHTEC_IOCTL_PART_VENDOR4: 735 set_fw_info_part(info, &fi->vendor[4]); 736 break; 737 case SWITCHTEC_IOCTL_PART_VENDOR5: 738 set_fw_info_part(info, &fi->vendor[5]); 739 break; 740 case SWITCHTEC_IOCTL_PART_VENDOR6: 741 set_fw_info_part(info, &fi->vendor[6]); 742 break; 743 case SWITCHTEC_IOCTL_PART_VENDOR7: 744 set_fw_info_part(info, &fi->vendor[7]); 745 break; 746 default: 747 return -EINVAL; 748 } 749 750 if (info->address == active_addr) 751 info->active |= SWITCHTEC_IOCTL_PART_ACTIVE; 752 753 return 0; 754 } 755 756 static int flash_part_info_gen4(struct switchtec_dev *stdev, 757 struct switchtec_ioctl_flash_part_info *info) 758 { 759 struct flash_info_regs_gen4 __iomem *fi = &stdev->mmio_flash_info->gen4; 760 struct sys_info_regs_gen4 __iomem *si = &stdev->mmio_sys_info->gen4; 761 struct active_partition_info_gen4 __iomem *af = &fi->active_flag; 762 763 switch (info->flash_partition) { 764 case SWITCHTEC_IOCTL_PART_MAP_0: 765 set_fw_info_part(info, &fi->map0); 766 break; 767 case SWITCHTEC_IOCTL_PART_MAP_1: 768 set_fw_info_part(info, &fi->map1); 769 break; 770 case SWITCHTEC_IOCTL_PART_KEY_0: 771 set_fw_info_part(info, &fi->key0); 772 if (ioread8(&af->key) == SWITCHTEC_GEN4_KEY0_ACTIVE) 773 info->active |= SWITCHTEC_IOCTL_PART_ACTIVE; 774 if (ioread16(&si->key_running) == SWITCHTEC_GEN4_KEY0_RUNNING) 775 info->active |= SWITCHTEC_IOCTL_PART_RUNNING; 776 break; 777 case SWITCHTEC_IOCTL_PART_KEY_1: 778 set_fw_info_part(info, &fi->key1); 779 if (ioread8(&af->key) == SWITCHTEC_GEN4_KEY1_ACTIVE) 780 info->active |= SWITCHTEC_IOCTL_PART_ACTIVE; 781 if (ioread16(&si->key_running) == SWITCHTEC_GEN4_KEY1_RUNNING) 782 info->active |= SWITCHTEC_IOCTL_PART_RUNNING; 783 break; 784 case SWITCHTEC_IOCTL_PART_BL2_0: 785 set_fw_info_part(info, &fi->bl2_0); 786 if (ioread8(&af->bl2) == SWITCHTEC_GEN4_BL2_0_ACTIVE) 787 info->active |= SWITCHTEC_IOCTL_PART_ACTIVE; 788 if (ioread16(&si->bl2_running) == SWITCHTEC_GEN4_BL2_0_RUNNING) 789 info->active |= SWITCHTEC_IOCTL_PART_RUNNING; 790 break; 791 case SWITCHTEC_IOCTL_PART_BL2_1: 792 set_fw_info_part(info, &fi->bl2_1); 793 if (ioread8(&af->bl2) == SWITCHTEC_GEN4_BL2_1_ACTIVE) 794 info->active |= SWITCHTEC_IOCTL_PART_ACTIVE; 795 if (ioread16(&si->bl2_running) == SWITCHTEC_GEN4_BL2_1_RUNNING) 796 info->active |= SWITCHTEC_IOCTL_PART_RUNNING; 797 break; 798 case SWITCHTEC_IOCTL_PART_CFG0: 799 set_fw_info_part(info, &fi->cfg0); 800 if (ioread8(&af->cfg) == SWITCHTEC_GEN4_CFG0_ACTIVE) 801 info->active |= SWITCHTEC_IOCTL_PART_ACTIVE; 802 if (ioread16(&si->cfg_running) == SWITCHTEC_GEN4_CFG0_RUNNING) 803 info->active |= SWITCHTEC_IOCTL_PART_RUNNING; 804 break; 805 case SWITCHTEC_IOCTL_PART_CFG1: 806 set_fw_info_part(info, &fi->cfg1); 807 if (ioread8(&af->cfg) == SWITCHTEC_GEN4_CFG1_ACTIVE) 808 info->active |= SWITCHTEC_IOCTL_PART_ACTIVE; 809 if (ioread16(&si->cfg_running) == SWITCHTEC_GEN4_CFG1_RUNNING) 810 info->active |= SWITCHTEC_IOCTL_PART_RUNNING; 811 break; 812 case SWITCHTEC_IOCTL_PART_IMG0: 813 set_fw_info_part(info, &fi->img0); 814 if (ioread8(&af->img) == SWITCHTEC_GEN4_IMG0_ACTIVE) 815 info->active |= SWITCHTEC_IOCTL_PART_ACTIVE; 816 if (ioread16(&si->img_running) == SWITCHTEC_GEN4_IMG0_RUNNING) 817 info->active |= SWITCHTEC_IOCTL_PART_RUNNING; 818 break; 819 case SWITCHTEC_IOCTL_PART_IMG1: 820 set_fw_info_part(info, &fi->img1); 821 if (ioread8(&af->img) == SWITCHTEC_GEN4_IMG1_ACTIVE) 822 info->active |= SWITCHTEC_IOCTL_PART_ACTIVE; 823 if (ioread16(&si->img_running) == SWITCHTEC_GEN4_IMG1_RUNNING) 824 info->active |= SWITCHTEC_IOCTL_PART_RUNNING; 825 break; 826 case SWITCHTEC_IOCTL_PART_NVLOG: 827 set_fw_info_part(info, &fi->nvlog); 828 break; 829 case SWITCHTEC_IOCTL_PART_VENDOR0: 830 set_fw_info_part(info, &fi->vendor[0]); 831 break; 832 case SWITCHTEC_IOCTL_PART_VENDOR1: 833 set_fw_info_part(info, &fi->vendor[1]); 834 break; 835 case SWITCHTEC_IOCTL_PART_VENDOR2: 836 set_fw_info_part(info, &fi->vendor[2]); 837 break; 838 case SWITCHTEC_IOCTL_PART_VENDOR3: 839 set_fw_info_part(info, &fi->vendor[3]); 840 break; 841 case SWITCHTEC_IOCTL_PART_VENDOR4: 842 set_fw_info_part(info, &fi->vendor[4]); 843 break; 844 case SWITCHTEC_IOCTL_PART_VENDOR5: 845 set_fw_info_part(info, &fi->vendor[5]); 846 break; 847 case SWITCHTEC_IOCTL_PART_VENDOR6: 848 set_fw_info_part(info, &fi->vendor[6]); 849 break; 850 case SWITCHTEC_IOCTL_PART_VENDOR7: 851 set_fw_info_part(info, &fi->vendor[7]); 852 break; 853 default: 854 return -EINVAL; 855 } 856 857 return 0; 858 } 859 860 static int ioctl_flash_part_info(struct switchtec_dev *stdev, 861 struct switchtec_ioctl_flash_part_info __user *uinfo) 862 { 863 int ret; 864 struct switchtec_ioctl_flash_part_info info = {0}; 865 866 if (copy_from_user(&info, uinfo, sizeof(info))) 867 return -EFAULT; 868 869 if (stdev->gen == SWITCHTEC_GEN3) { 870 ret = flash_part_info_gen3(stdev, &info); 871 if (ret) 872 return ret; 873 } else if (stdev->gen == SWITCHTEC_GEN4) { 874 ret = flash_part_info_gen4(stdev, &info); 875 if (ret) 876 return ret; 877 } else { 878 return -EOPNOTSUPP; 879 } 880 881 if (copy_to_user(uinfo, &info, sizeof(info))) 882 return -EFAULT; 883 884 return 0; 885 } 886 887 static int ioctl_event_summary(struct switchtec_dev *stdev, 888 struct switchtec_user *stuser, 889 struct switchtec_ioctl_event_summary __user *usum, 890 size_t size) 891 { 892 struct switchtec_ioctl_event_summary *s; 893 int i; 894 u32 reg; 895 int ret = 0; 896 897 s = kzalloc(sizeof(*s), GFP_KERNEL); 898 if (!s) 899 return -ENOMEM; 900 901 s->global = ioread32(&stdev->mmio_sw_event->global_summary); 902 s->part_bitmap = ioread64(&stdev->mmio_sw_event->part_event_bitmap); 903 s->local_part = ioread32(&stdev->mmio_part_cfg->part_event_summary); 904 905 for (i = 0; i < stdev->partition_count; i++) { 906 reg = ioread32(&stdev->mmio_part_cfg_all[i].part_event_summary); 907 s->part[i] = reg; 908 } 909 910 for (i = 0; i < stdev->pff_csr_count; i++) { 911 reg = ioread32(&stdev->mmio_pff_csr[i].pff_event_summary); 912 s->pff[i] = reg; 913 } 914 915 if (copy_to_user(usum, s, size)) { 916 ret = -EFAULT; 917 goto error_case; 918 } 919 920 stuser->event_cnt = atomic_read(&stdev->event_cnt); 921 922 error_case: 923 kfree(s); 924 return ret; 925 } 926 927 static u32 __iomem *global_ev_reg(struct switchtec_dev *stdev, 928 size_t offset, int index) 929 { 930 return (void __iomem *)stdev->mmio_sw_event + offset; 931 } 932 933 static u32 __iomem *part_ev_reg(struct switchtec_dev *stdev, 934 size_t offset, int index) 935 { 936 return (void __iomem *)&stdev->mmio_part_cfg_all[index] + offset; 937 } 938 939 static u32 __iomem *pff_ev_reg(struct switchtec_dev *stdev, 940 size_t offset, int index) 941 { 942 return (void __iomem *)&stdev->mmio_pff_csr[index] + offset; 943 } 944 945 #define EV_GLB(i, r)[i] = {offsetof(struct sw_event_regs, r), global_ev_reg} 946 #define EV_PAR(i, r)[i] = {offsetof(struct part_cfg_regs, r), part_ev_reg} 947 #define EV_PFF(i, r)[i] = {offsetof(struct pff_csr_regs, r), pff_ev_reg} 948 949 static const struct event_reg { 950 size_t offset; 951 u32 __iomem *(*map_reg)(struct switchtec_dev *stdev, 952 size_t offset, int index); 953 } event_regs[] = { 954 EV_GLB(SWITCHTEC_IOCTL_EVENT_STACK_ERROR, stack_error_event_hdr), 955 EV_GLB(SWITCHTEC_IOCTL_EVENT_PPU_ERROR, ppu_error_event_hdr), 956 EV_GLB(SWITCHTEC_IOCTL_EVENT_ISP_ERROR, isp_error_event_hdr), 957 EV_GLB(SWITCHTEC_IOCTL_EVENT_SYS_RESET, sys_reset_event_hdr), 958 EV_GLB(SWITCHTEC_IOCTL_EVENT_FW_EXC, fw_exception_hdr), 959 EV_GLB(SWITCHTEC_IOCTL_EVENT_FW_NMI, fw_nmi_hdr), 960 EV_GLB(SWITCHTEC_IOCTL_EVENT_FW_NON_FATAL, fw_non_fatal_hdr), 961 EV_GLB(SWITCHTEC_IOCTL_EVENT_FW_FATAL, fw_fatal_hdr), 962 EV_GLB(SWITCHTEC_IOCTL_EVENT_TWI_MRPC_COMP, twi_mrpc_comp_hdr), 963 EV_GLB(SWITCHTEC_IOCTL_EVENT_TWI_MRPC_COMP_ASYNC, 964 twi_mrpc_comp_async_hdr), 965 EV_GLB(SWITCHTEC_IOCTL_EVENT_CLI_MRPC_COMP, cli_mrpc_comp_hdr), 966 EV_GLB(SWITCHTEC_IOCTL_EVENT_CLI_MRPC_COMP_ASYNC, 967 cli_mrpc_comp_async_hdr), 968 EV_GLB(SWITCHTEC_IOCTL_EVENT_GPIO_INT, gpio_interrupt_hdr), 969 EV_GLB(SWITCHTEC_IOCTL_EVENT_GFMS, gfms_event_hdr), 970 EV_PAR(SWITCHTEC_IOCTL_EVENT_PART_RESET, part_reset_hdr), 971 EV_PAR(SWITCHTEC_IOCTL_EVENT_MRPC_COMP, mrpc_comp_hdr), 972 EV_PAR(SWITCHTEC_IOCTL_EVENT_MRPC_COMP_ASYNC, mrpc_comp_async_hdr), 973 EV_PAR(SWITCHTEC_IOCTL_EVENT_DYN_PART_BIND_COMP, dyn_binding_hdr), 974 EV_PAR(SWITCHTEC_IOCTL_EVENT_INTERCOMM_REQ_NOTIFY, 975 intercomm_notify_hdr), 976 EV_PFF(SWITCHTEC_IOCTL_EVENT_AER_IN_P2P, aer_in_p2p_hdr), 977 EV_PFF(SWITCHTEC_IOCTL_EVENT_AER_IN_VEP, aer_in_vep_hdr), 978 EV_PFF(SWITCHTEC_IOCTL_EVENT_DPC, dpc_hdr), 979 EV_PFF(SWITCHTEC_IOCTL_EVENT_CTS, cts_hdr), 980 EV_PFF(SWITCHTEC_IOCTL_EVENT_UEC, uec_hdr), 981 EV_PFF(SWITCHTEC_IOCTL_EVENT_HOTPLUG, hotplug_hdr), 982 EV_PFF(SWITCHTEC_IOCTL_EVENT_IER, ier_hdr), 983 EV_PFF(SWITCHTEC_IOCTL_EVENT_THRESH, threshold_hdr), 984 EV_PFF(SWITCHTEC_IOCTL_EVENT_POWER_MGMT, power_mgmt_hdr), 985 EV_PFF(SWITCHTEC_IOCTL_EVENT_TLP_THROTTLING, tlp_throttling_hdr), 986 EV_PFF(SWITCHTEC_IOCTL_EVENT_FORCE_SPEED, force_speed_hdr), 987 EV_PFF(SWITCHTEC_IOCTL_EVENT_CREDIT_TIMEOUT, credit_timeout_hdr), 988 EV_PFF(SWITCHTEC_IOCTL_EVENT_LINK_STATE, link_state_hdr), 989 }; 990 991 static u32 __iomem *event_hdr_addr(struct switchtec_dev *stdev, 992 int event_id, int index) 993 { 994 size_t off; 995 996 if (event_id < 0 || event_id >= SWITCHTEC_IOCTL_MAX_EVENTS) 997 return (u32 __iomem *)ERR_PTR(-EINVAL); 998 999 off = event_regs[event_id].offset; 1000 1001 if (event_regs[event_id].map_reg == part_ev_reg) { 1002 if (index == SWITCHTEC_IOCTL_EVENT_LOCAL_PART_IDX) 1003 index = stdev->partition; 1004 else if (index < 0 || index >= stdev->partition_count) 1005 return (u32 __iomem *)ERR_PTR(-EINVAL); 1006 } else if (event_regs[event_id].map_reg == pff_ev_reg) { 1007 if (index < 0 || index >= stdev->pff_csr_count) 1008 return (u32 __iomem *)ERR_PTR(-EINVAL); 1009 } 1010 1011 return event_regs[event_id].map_reg(stdev, off, index); 1012 } 1013 1014 static int event_ctl(struct switchtec_dev *stdev, 1015 struct switchtec_ioctl_event_ctl *ctl) 1016 { 1017 int i; 1018 u32 __iomem *reg; 1019 u32 hdr; 1020 1021 reg = event_hdr_addr(stdev, ctl->event_id, ctl->index); 1022 if (IS_ERR(reg)) 1023 return PTR_ERR(reg); 1024 1025 hdr = ioread32(reg); 1026 if (hdr & SWITCHTEC_EVENT_NOT_SUPP) 1027 return -EOPNOTSUPP; 1028 1029 for (i = 0; i < ARRAY_SIZE(ctl->data); i++) 1030 ctl->data[i] = ioread32(®[i + 1]); 1031 1032 ctl->occurred = hdr & SWITCHTEC_EVENT_OCCURRED; 1033 ctl->count = (hdr >> 5) & 0xFF; 1034 1035 if (!(ctl->flags & SWITCHTEC_IOCTL_EVENT_FLAG_CLEAR)) 1036 hdr &= ~SWITCHTEC_EVENT_CLEAR; 1037 if (ctl->flags & SWITCHTEC_IOCTL_EVENT_FLAG_EN_POLL) 1038 hdr |= SWITCHTEC_EVENT_EN_IRQ; 1039 if (ctl->flags & SWITCHTEC_IOCTL_EVENT_FLAG_DIS_POLL) 1040 hdr &= ~SWITCHTEC_EVENT_EN_IRQ; 1041 if (ctl->flags & SWITCHTEC_IOCTL_EVENT_FLAG_EN_LOG) 1042 hdr |= SWITCHTEC_EVENT_EN_LOG; 1043 if (ctl->flags & SWITCHTEC_IOCTL_EVENT_FLAG_DIS_LOG) 1044 hdr &= ~SWITCHTEC_EVENT_EN_LOG; 1045 if (ctl->flags & SWITCHTEC_IOCTL_EVENT_FLAG_EN_CLI) 1046 hdr |= SWITCHTEC_EVENT_EN_CLI; 1047 if (ctl->flags & SWITCHTEC_IOCTL_EVENT_FLAG_DIS_CLI) 1048 hdr &= ~SWITCHTEC_EVENT_EN_CLI; 1049 if (ctl->flags & SWITCHTEC_IOCTL_EVENT_FLAG_EN_FATAL) 1050 hdr |= SWITCHTEC_EVENT_FATAL; 1051 if (ctl->flags & SWITCHTEC_IOCTL_EVENT_FLAG_DIS_FATAL) 1052 hdr &= ~SWITCHTEC_EVENT_FATAL; 1053 1054 if (ctl->flags) 1055 iowrite32(hdr, reg); 1056 1057 ctl->flags = 0; 1058 if (hdr & SWITCHTEC_EVENT_EN_IRQ) 1059 ctl->flags |= SWITCHTEC_IOCTL_EVENT_FLAG_EN_POLL; 1060 if (hdr & SWITCHTEC_EVENT_EN_LOG) 1061 ctl->flags |= SWITCHTEC_IOCTL_EVENT_FLAG_EN_LOG; 1062 if (hdr & SWITCHTEC_EVENT_EN_CLI) 1063 ctl->flags |= SWITCHTEC_IOCTL_EVENT_FLAG_EN_CLI; 1064 if (hdr & SWITCHTEC_EVENT_FATAL) 1065 ctl->flags |= SWITCHTEC_IOCTL_EVENT_FLAG_EN_FATAL; 1066 1067 return 0; 1068 } 1069 1070 static int ioctl_event_ctl(struct switchtec_dev *stdev, 1071 struct switchtec_ioctl_event_ctl __user *uctl) 1072 { 1073 int ret; 1074 int nr_idxs; 1075 unsigned int event_flags; 1076 struct switchtec_ioctl_event_ctl ctl; 1077 1078 if (copy_from_user(&ctl, uctl, sizeof(ctl))) 1079 return -EFAULT; 1080 1081 if (ctl.event_id >= SWITCHTEC_IOCTL_MAX_EVENTS) 1082 return -EINVAL; 1083 1084 if (ctl.flags & SWITCHTEC_IOCTL_EVENT_FLAG_UNUSED) 1085 return -EINVAL; 1086 1087 if (ctl.index == SWITCHTEC_IOCTL_EVENT_IDX_ALL) { 1088 if (event_regs[ctl.event_id].map_reg == global_ev_reg) 1089 nr_idxs = 1; 1090 else if (event_regs[ctl.event_id].map_reg == part_ev_reg) 1091 nr_idxs = stdev->partition_count; 1092 else if (event_regs[ctl.event_id].map_reg == pff_ev_reg) 1093 nr_idxs = stdev->pff_csr_count; 1094 else 1095 return -EINVAL; 1096 1097 event_flags = ctl.flags; 1098 for (ctl.index = 0; ctl.index < nr_idxs; ctl.index++) { 1099 ctl.flags = event_flags; 1100 ret = event_ctl(stdev, &ctl); 1101 if (ret < 0 && ret != -EOPNOTSUPP) 1102 return ret; 1103 } 1104 } else { 1105 ret = event_ctl(stdev, &ctl); 1106 if (ret < 0) 1107 return ret; 1108 } 1109 1110 if (copy_to_user(uctl, &ctl, sizeof(ctl))) 1111 return -EFAULT; 1112 1113 return 0; 1114 } 1115 1116 static int ioctl_pff_to_port(struct switchtec_dev *stdev, 1117 struct switchtec_ioctl_pff_port __user *up) 1118 { 1119 int i, part; 1120 u32 reg; 1121 struct part_cfg_regs __iomem *pcfg; 1122 struct switchtec_ioctl_pff_port p; 1123 1124 if (copy_from_user(&p, up, sizeof(p))) 1125 return -EFAULT; 1126 1127 p.port = -1; 1128 for (part = 0; part < stdev->partition_count; part++) { 1129 pcfg = &stdev->mmio_part_cfg_all[part]; 1130 p.partition = part; 1131 1132 reg = ioread32(&pcfg->usp_pff_inst_id); 1133 if (reg == p.pff) { 1134 p.port = 0; 1135 break; 1136 } 1137 1138 reg = ioread32(&pcfg->vep_pff_inst_id) & 0xFF; 1139 if (reg == p.pff) { 1140 p.port = SWITCHTEC_IOCTL_PFF_VEP; 1141 break; 1142 } 1143 1144 for (i = 0; i < ARRAY_SIZE(pcfg->dsp_pff_inst_id); i++) { 1145 reg = ioread32(&pcfg->dsp_pff_inst_id[i]); 1146 if (reg != p.pff) 1147 continue; 1148 1149 p.port = i + 1; 1150 break; 1151 } 1152 1153 if (p.port != -1) 1154 break; 1155 } 1156 1157 if (copy_to_user(up, &p, sizeof(p))) 1158 return -EFAULT; 1159 1160 return 0; 1161 } 1162 1163 static int ioctl_port_to_pff(struct switchtec_dev *stdev, 1164 struct switchtec_ioctl_pff_port __user *up) 1165 { 1166 struct switchtec_ioctl_pff_port p; 1167 struct part_cfg_regs __iomem *pcfg; 1168 1169 if (copy_from_user(&p, up, sizeof(p))) 1170 return -EFAULT; 1171 1172 if (p.partition == SWITCHTEC_IOCTL_EVENT_LOCAL_PART_IDX) 1173 pcfg = stdev->mmio_part_cfg; 1174 else if (p.partition < stdev->partition_count) 1175 pcfg = &stdev->mmio_part_cfg_all[p.partition]; 1176 else 1177 return -EINVAL; 1178 1179 switch (p.port) { 1180 case 0: 1181 p.pff = ioread32(&pcfg->usp_pff_inst_id); 1182 break; 1183 case SWITCHTEC_IOCTL_PFF_VEP: 1184 p.pff = ioread32(&pcfg->vep_pff_inst_id) & 0xFF; 1185 break; 1186 default: 1187 if (p.port > ARRAY_SIZE(pcfg->dsp_pff_inst_id)) 1188 return -EINVAL; 1189 p.port = array_index_nospec(p.port, 1190 ARRAY_SIZE(pcfg->dsp_pff_inst_id) + 1); 1191 p.pff = ioread32(&pcfg->dsp_pff_inst_id[p.port - 1]); 1192 break; 1193 } 1194 1195 if (copy_to_user(up, &p, sizeof(p))) 1196 return -EFAULT; 1197 1198 return 0; 1199 } 1200 1201 static long switchtec_dev_ioctl(struct file *filp, unsigned int cmd, 1202 unsigned long arg) 1203 { 1204 struct switchtec_user *stuser = filp->private_data; 1205 struct switchtec_dev *stdev = stuser->stdev; 1206 int rc; 1207 void __user *argp = (void __user *)arg; 1208 1209 rc = lock_mutex_and_test_alive(stdev); 1210 if (rc) 1211 return rc; 1212 1213 switch (cmd) { 1214 case SWITCHTEC_IOCTL_FLASH_INFO: 1215 rc = ioctl_flash_info(stdev, argp); 1216 break; 1217 case SWITCHTEC_IOCTL_FLASH_PART_INFO: 1218 rc = ioctl_flash_part_info(stdev, argp); 1219 break; 1220 case SWITCHTEC_IOCTL_EVENT_SUMMARY_LEGACY: 1221 rc = ioctl_event_summary(stdev, stuser, argp, 1222 sizeof(struct switchtec_ioctl_event_summary_legacy)); 1223 break; 1224 case SWITCHTEC_IOCTL_EVENT_CTL: 1225 rc = ioctl_event_ctl(stdev, argp); 1226 break; 1227 case SWITCHTEC_IOCTL_PFF_TO_PORT: 1228 rc = ioctl_pff_to_port(stdev, argp); 1229 break; 1230 case SWITCHTEC_IOCTL_PORT_TO_PFF: 1231 rc = ioctl_port_to_pff(stdev, argp); 1232 break; 1233 case SWITCHTEC_IOCTL_EVENT_SUMMARY: 1234 rc = ioctl_event_summary(stdev, stuser, argp, 1235 sizeof(struct switchtec_ioctl_event_summary)); 1236 break; 1237 default: 1238 rc = -ENOTTY; 1239 break; 1240 } 1241 1242 mutex_unlock(&stdev->mrpc_mutex); 1243 return rc; 1244 } 1245 1246 static const struct file_operations switchtec_fops = { 1247 .owner = THIS_MODULE, 1248 .open = switchtec_dev_open, 1249 .release = switchtec_dev_release, 1250 .write = switchtec_dev_write, 1251 .read = switchtec_dev_read, 1252 .poll = switchtec_dev_poll, 1253 .unlocked_ioctl = switchtec_dev_ioctl, 1254 .compat_ioctl = compat_ptr_ioctl, 1255 }; 1256 1257 static void link_event_work(struct work_struct *work) 1258 { 1259 struct switchtec_dev *stdev; 1260 1261 stdev = container_of(work, struct switchtec_dev, link_event_work); 1262 1263 if (stdev->link_notifier) 1264 stdev->link_notifier(stdev); 1265 } 1266 1267 static void check_link_state_events(struct switchtec_dev *stdev) 1268 { 1269 int idx; 1270 u32 reg; 1271 int count; 1272 int occurred = 0; 1273 1274 for (idx = 0; idx < stdev->pff_csr_count; idx++) { 1275 reg = ioread32(&stdev->mmio_pff_csr[idx].link_state_hdr); 1276 dev_dbg(&stdev->dev, "link_state: %d->%08x\n", idx, reg); 1277 count = (reg >> 5) & 0xFF; 1278 1279 if (count != stdev->link_event_count[idx]) { 1280 occurred = 1; 1281 stdev->link_event_count[idx] = count; 1282 } 1283 } 1284 1285 if (occurred) 1286 schedule_work(&stdev->link_event_work); 1287 } 1288 1289 static void enable_link_state_events(struct switchtec_dev *stdev) 1290 { 1291 int idx; 1292 1293 for (idx = 0; idx < stdev->pff_csr_count; idx++) { 1294 iowrite32(SWITCHTEC_EVENT_CLEAR | 1295 SWITCHTEC_EVENT_EN_IRQ, 1296 &stdev->mmio_pff_csr[idx].link_state_hdr); 1297 } 1298 } 1299 1300 static void enable_dma_mrpc(struct switchtec_dev *stdev) 1301 { 1302 writeq(stdev->dma_mrpc_dma_addr, &stdev->mmio_mrpc->dma_addr); 1303 flush_wc_buf(stdev); 1304 iowrite32(SWITCHTEC_DMA_MRPC_EN, &stdev->mmio_mrpc->dma_en); 1305 } 1306 1307 static void stdev_release(struct device *dev) 1308 { 1309 struct switchtec_dev *stdev = to_stdev(dev); 1310 1311 if (stdev->dma_mrpc) { 1312 iowrite32(0, &stdev->mmio_mrpc->dma_en); 1313 flush_wc_buf(stdev); 1314 writeq(0, &stdev->mmio_mrpc->dma_addr); 1315 dma_free_coherent(&stdev->pdev->dev, sizeof(*stdev->dma_mrpc), 1316 stdev->dma_mrpc, stdev->dma_mrpc_dma_addr); 1317 } 1318 kfree(stdev); 1319 } 1320 1321 static void stdev_kill(struct switchtec_dev *stdev) 1322 { 1323 struct switchtec_user *stuser, *tmpuser; 1324 1325 pci_clear_master(stdev->pdev); 1326 1327 cancel_delayed_work_sync(&stdev->mrpc_timeout); 1328 1329 /* Mark the hardware as unavailable and complete all completions */ 1330 mutex_lock(&stdev->mrpc_mutex); 1331 stdev->alive = false; 1332 1333 /* Wake up and kill any users waiting on an MRPC request */ 1334 list_for_each_entry_safe(stuser, tmpuser, &stdev->mrpc_queue, list) { 1335 stuser->cmd_done = true; 1336 wake_up_interruptible(&stuser->cmd_comp); 1337 list_del_init(&stuser->list); 1338 stuser_put(stuser); 1339 } 1340 1341 mutex_unlock(&stdev->mrpc_mutex); 1342 1343 /* Wake up any users waiting on event_wq */ 1344 wake_up_interruptible(&stdev->event_wq); 1345 } 1346 1347 static struct switchtec_dev *stdev_create(struct pci_dev *pdev) 1348 { 1349 struct switchtec_dev *stdev; 1350 int minor; 1351 struct device *dev; 1352 struct cdev *cdev; 1353 int rc; 1354 1355 stdev = kzalloc_node(sizeof(*stdev), GFP_KERNEL, 1356 dev_to_node(&pdev->dev)); 1357 if (!stdev) 1358 return ERR_PTR(-ENOMEM); 1359 1360 stdev->alive = true; 1361 stdev->pdev = pdev; 1362 INIT_LIST_HEAD(&stdev->mrpc_queue); 1363 mutex_init(&stdev->mrpc_mutex); 1364 stdev->mrpc_busy = 0; 1365 INIT_WORK(&stdev->mrpc_work, mrpc_event_work); 1366 INIT_DELAYED_WORK(&stdev->mrpc_timeout, mrpc_timeout_work); 1367 INIT_WORK(&stdev->link_event_work, link_event_work); 1368 init_waitqueue_head(&stdev->event_wq); 1369 atomic_set(&stdev->event_cnt, 0); 1370 1371 dev = &stdev->dev; 1372 device_initialize(dev); 1373 dev->class = switchtec_class; 1374 dev->parent = &pdev->dev; 1375 dev->groups = switchtec_device_groups; 1376 dev->release = stdev_release; 1377 1378 minor = ida_alloc(&switchtec_minor_ida, GFP_KERNEL); 1379 if (minor < 0) { 1380 rc = minor; 1381 goto err_put; 1382 } 1383 1384 dev->devt = MKDEV(MAJOR(switchtec_devt), minor); 1385 dev_set_name(dev, "switchtec%d", minor); 1386 1387 cdev = &stdev->cdev; 1388 cdev_init(cdev, &switchtec_fops); 1389 cdev->owner = THIS_MODULE; 1390 1391 return stdev; 1392 1393 err_put: 1394 put_device(&stdev->dev); 1395 return ERR_PTR(rc); 1396 } 1397 1398 static int mask_event(struct switchtec_dev *stdev, int eid, int idx) 1399 { 1400 size_t off = event_regs[eid].offset; 1401 u32 __iomem *hdr_reg; 1402 u32 hdr; 1403 1404 hdr_reg = event_regs[eid].map_reg(stdev, off, idx); 1405 hdr = ioread32(hdr_reg); 1406 1407 if (hdr & SWITCHTEC_EVENT_NOT_SUPP) 1408 return 0; 1409 1410 if (!(hdr & SWITCHTEC_EVENT_OCCURRED && hdr & SWITCHTEC_EVENT_EN_IRQ)) 1411 return 0; 1412 1413 dev_dbg(&stdev->dev, "%s: %d %d %x\n", __func__, eid, idx, hdr); 1414 hdr &= ~(SWITCHTEC_EVENT_EN_IRQ | SWITCHTEC_EVENT_OCCURRED); 1415 iowrite32(hdr, hdr_reg); 1416 1417 return 1; 1418 } 1419 1420 static int mask_all_events(struct switchtec_dev *stdev, int eid) 1421 { 1422 int idx; 1423 int count = 0; 1424 1425 if (event_regs[eid].map_reg == part_ev_reg) { 1426 for (idx = 0; idx < stdev->partition_count; idx++) 1427 count += mask_event(stdev, eid, idx); 1428 } else if (event_regs[eid].map_reg == pff_ev_reg) { 1429 for (idx = 0; idx < stdev->pff_csr_count; idx++) { 1430 if (!stdev->pff_local[idx]) 1431 continue; 1432 1433 count += mask_event(stdev, eid, idx); 1434 } 1435 } else { 1436 count += mask_event(stdev, eid, 0); 1437 } 1438 1439 return count; 1440 } 1441 1442 static irqreturn_t switchtec_event_isr(int irq, void *dev) 1443 { 1444 struct switchtec_dev *stdev = dev; 1445 u32 reg; 1446 irqreturn_t ret = IRQ_NONE; 1447 int eid, event_count = 0; 1448 1449 reg = ioread32(&stdev->mmio_part_cfg->mrpc_comp_hdr); 1450 if (reg & SWITCHTEC_EVENT_OCCURRED) { 1451 dev_dbg(&stdev->dev, "%s: mrpc comp\n", __func__); 1452 ret = IRQ_HANDLED; 1453 schedule_work(&stdev->mrpc_work); 1454 iowrite32(reg, &stdev->mmio_part_cfg->mrpc_comp_hdr); 1455 } 1456 1457 check_link_state_events(stdev); 1458 1459 for (eid = 0; eid < SWITCHTEC_IOCTL_MAX_EVENTS; eid++) { 1460 if (eid == SWITCHTEC_IOCTL_EVENT_LINK_STATE || 1461 eid == SWITCHTEC_IOCTL_EVENT_MRPC_COMP) 1462 continue; 1463 1464 event_count += mask_all_events(stdev, eid); 1465 } 1466 1467 if (event_count) { 1468 atomic_inc(&stdev->event_cnt); 1469 wake_up_interruptible(&stdev->event_wq); 1470 dev_dbg(&stdev->dev, "%s: %d events\n", __func__, 1471 event_count); 1472 return IRQ_HANDLED; 1473 } 1474 1475 return ret; 1476 } 1477 1478 1479 static irqreturn_t switchtec_dma_mrpc_isr(int irq, void *dev) 1480 { 1481 struct switchtec_dev *stdev = dev; 1482 1483 iowrite32(SWITCHTEC_EVENT_CLEAR | 1484 SWITCHTEC_EVENT_EN_IRQ, 1485 &stdev->mmio_part_cfg->mrpc_comp_hdr); 1486 schedule_work(&stdev->mrpc_work); 1487 1488 return IRQ_HANDLED; 1489 } 1490 1491 static int switchtec_init_isr(struct switchtec_dev *stdev) 1492 { 1493 int nvecs; 1494 int event_irq; 1495 int dma_mrpc_irq; 1496 int rc; 1497 1498 if (nirqs < 4) 1499 nirqs = 4; 1500 1501 nvecs = pci_alloc_irq_vectors(stdev->pdev, 1, nirqs, 1502 PCI_IRQ_MSIX | PCI_IRQ_MSI | 1503 PCI_IRQ_VIRTUAL); 1504 if (nvecs < 0) 1505 return nvecs; 1506 1507 event_irq = ioread16(&stdev->mmio_part_cfg->vep_vector_number); 1508 if (event_irq < 0 || event_irq >= nvecs) 1509 return -EFAULT; 1510 1511 event_irq = pci_irq_vector(stdev->pdev, event_irq); 1512 if (event_irq < 0) 1513 return event_irq; 1514 1515 rc = devm_request_irq(&stdev->pdev->dev, event_irq, 1516 switchtec_event_isr, 0, 1517 KBUILD_MODNAME, stdev); 1518 1519 if (rc) 1520 return rc; 1521 1522 if (!stdev->dma_mrpc) 1523 return rc; 1524 1525 dma_mrpc_irq = ioread32(&stdev->mmio_mrpc->dma_vector); 1526 if (dma_mrpc_irq < 0 || dma_mrpc_irq >= nvecs) 1527 return -EFAULT; 1528 1529 dma_mrpc_irq = pci_irq_vector(stdev->pdev, dma_mrpc_irq); 1530 if (dma_mrpc_irq < 0) 1531 return dma_mrpc_irq; 1532 1533 rc = devm_request_irq(&stdev->pdev->dev, dma_mrpc_irq, 1534 switchtec_dma_mrpc_isr, 0, 1535 KBUILD_MODNAME, stdev); 1536 1537 return rc; 1538 } 1539 1540 static void init_pff(struct switchtec_dev *stdev) 1541 { 1542 int i; 1543 u32 reg; 1544 struct part_cfg_regs __iomem *pcfg = stdev->mmio_part_cfg; 1545 1546 for (i = 0; i < SWITCHTEC_MAX_PFF_CSR; i++) { 1547 reg = ioread16(&stdev->mmio_pff_csr[i].vendor_id); 1548 if (reg != PCI_VENDOR_ID_MICROSEMI) 1549 break; 1550 } 1551 1552 stdev->pff_csr_count = i; 1553 1554 reg = ioread32(&pcfg->usp_pff_inst_id); 1555 if (reg < stdev->pff_csr_count) 1556 stdev->pff_local[reg] = 1; 1557 1558 reg = ioread32(&pcfg->vep_pff_inst_id) & 0xFF; 1559 if (reg < stdev->pff_csr_count) 1560 stdev->pff_local[reg] = 1; 1561 1562 for (i = 0; i < ARRAY_SIZE(pcfg->dsp_pff_inst_id); i++) { 1563 reg = ioread32(&pcfg->dsp_pff_inst_id[i]); 1564 if (reg < stdev->pff_csr_count) 1565 stdev->pff_local[reg] = 1; 1566 } 1567 } 1568 1569 static int switchtec_init_pci(struct switchtec_dev *stdev, 1570 struct pci_dev *pdev) 1571 { 1572 int rc; 1573 void __iomem *map; 1574 unsigned long res_start, res_len; 1575 u32 __iomem *part_id; 1576 1577 rc = pcim_enable_device(pdev); 1578 if (rc) 1579 return rc; 1580 1581 rc = dma_set_mask_and_coherent(&pdev->dev, DMA_BIT_MASK(64)); 1582 if (rc) 1583 return rc; 1584 1585 pci_set_master(pdev); 1586 1587 res_start = pci_resource_start(pdev, 0); 1588 res_len = pci_resource_len(pdev, 0); 1589 1590 if (!devm_request_mem_region(&pdev->dev, res_start, 1591 res_len, KBUILD_MODNAME)) 1592 return -EBUSY; 1593 1594 stdev->mmio_mrpc = devm_ioremap_wc(&pdev->dev, res_start, 1595 SWITCHTEC_GAS_TOP_CFG_OFFSET); 1596 if (!stdev->mmio_mrpc) 1597 return -ENOMEM; 1598 1599 map = devm_ioremap(&pdev->dev, 1600 res_start + SWITCHTEC_GAS_TOP_CFG_OFFSET, 1601 res_len - SWITCHTEC_GAS_TOP_CFG_OFFSET); 1602 if (!map) 1603 return -ENOMEM; 1604 1605 stdev->mmio = map - SWITCHTEC_GAS_TOP_CFG_OFFSET; 1606 stdev->mmio_sw_event = stdev->mmio + SWITCHTEC_GAS_SW_EVENT_OFFSET; 1607 stdev->mmio_sys_info = stdev->mmio + SWITCHTEC_GAS_SYS_INFO_OFFSET; 1608 stdev->mmio_flash_info = stdev->mmio + SWITCHTEC_GAS_FLASH_INFO_OFFSET; 1609 stdev->mmio_ntb = stdev->mmio + SWITCHTEC_GAS_NTB_OFFSET; 1610 1611 if (stdev->gen == SWITCHTEC_GEN3) 1612 part_id = &stdev->mmio_sys_info->gen3.partition_id; 1613 else if (stdev->gen == SWITCHTEC_GEN4) 1614 part_id = &stdev->mmio_sys_info->gen4.partition_id; 1615 else 1616 return -EOPNOTSUPP; 1617 1618 stdev->partition = ioread8(part_id); 1619 stdev->partition_count = ioread8(&stdev->mmio_ntb->partition_count); 1620 stdev->mmio_part_cfg_all = stdev->mmio + SWITCHTEC_GAS_PART_CFG_OFFSET; 1621 stdev->mmio_part_cfg = &stdev->mmio_part_cfg_all[stdev->partition]; 1622 stdev->mmio_pff_csr = stdev->mmio + SWITCHTEC_GAS_PFF_CSR_OFFSET; 1623 1624 if (stdev->partition_count < 1) 1625 stdev->partition_count = 1; 1626 1627 init_pff(stdev); 1628 1629 pci_set_drvdata(pdev, stdev); 1630 1631 if (!use_dma_mrpc) 1632 return 0; 1633 1634 if (ioread32(&stdev->mmio_mrpc->dma_ver) == 0) 1635 return 0; 1636 1637 stdev->dma_mrpc = dma_alloc_coherent(&stdev->pdev->dev, 1638 sizeof(*stdev->dma_mrpc), 1639 &stdev->dma_mrpc_dma_addr, 1640 GFP_KERNEL); 1641 if (stdev->dma_mrpc == NULL) 1642 return -ENOMEM; 1643 1644 return 0; 1645 } 1646 1647 static int switchtec_pci_probe(struct pci_dev *pdev, 1648 const struct pci_device_id *id) 1649 { 1650 struct switchtec_dev *stdev; 1651 int rc; 1652 1653 if (pdev->class == (PCI_CLASS_BRIDGE_OTHER << 8)) 1654 request_module_nowait("ntb_hw_switchtec"); 1655 1656 stdev = stdev_create(pdev); 1657 if (IS_ERR(stdev)) 1658 return PTR_ERR(stdev); 1659 1660 stdev->gen = id->driver_data; 1661 1662 rc = switchtec_init_pci(stdev, pdev); 1663 if (rc) 1664 goto err_put; 1665 1666 rc = switchtec_init_isr(stdev); 1667 if (rc) { 1668 dev_err(&stdev->dev, "failed to init isr.\n"); 1669 goto err_put; 1670 } 1671 1672 iowrite32(SWITCHTEC_EVENT_CLEAR | 1673 SWITCHTEC_EVENT_EN_IRQ, 1674 &stdev->mmio_part_cfg->mrpc_comp_hdr); 1675 enable_link_state_events(stdev); 1676 1677 if (stdev->dma_mrpc) 1678 enable_dma_mrpc(stdev); 1679 1680 rc = cdev_device_add(&stdev->cdev, &stdev->dev); 1681 if (rc) 1682 goto err_devadd; 1683 1684 dev_info(&stdev->dev, "Management device registered.\n"); 1685 1686 return 0; 1687 1688 err_devadd: 1689 stdev_kill(stdev); 1690 err_put: 1691 ida_free(&switchtec_minor_ida, MINOR(stdev->dev.devt)); 1692 put_device(&stdev->dev); 1693 return rc; 1694 } 1695 1696 static void switchtec_pci_remove(struct pci_dev *pdev) 1697 { 1698 struct switchtec_dev *stdev = pci_get_drvdata(pdev); 1699 1700 pci_set_drvdata(pdev, NULL); 1701 1702 cdev_device_del(&stdev->cdev, &stdev->dev); 1703 ida_free(&switchtec_minor_ida, MINOR(stdev->dev.devt)); 1704 dev_info(&stdev->dev, "unregistered.\n"); 1705 stdev_kill(stdev); 1706 put_device(&stdev->dev); 1707 } 1708 1709 #define SWITCHTEC_PCI_DEVICE(device_id, gen) \ 1710 { \ 1711 .vendor = PCI_VENDOR_ID_MICROSEMI, \ 1712 .device = device_id, \ 1713 .subvendor = PCI_ANY_ID, \ 1714 .subdevice = PCI_ANY_ID, \ 1715 .class = (PCI_CLASS_MEMORY_OTHER << 8), \ 1716 .class_mask = 0xFFFFFFFF, \ 1717 .driver_data = gen, \ 1718 }, \ 1719 { \ 1720 .vendor = PCI_VENDOR_ID_MICROSEMI, \ 1721 .device = device_id, \ 1722 .subvendor = PCI_ANY_ID, \ 1723 .subdevice = PCI_ANY_ID, \ 1724 .class = (PCI_CLASS_BRIDGE_OTHER << 8), \ 1725 .class_mask = 0xFFFFFFFF, \ 1726 .driver_data = gen, \ 1727 } 1728 1729 static const struct pci_device_id switchtec_pci_tbl[] = { 1730 SWITCHTEC_PCI_DEVICE(0x8531, SWITCHTEC_GEN3), //PFX 24xG3 1731 SWITCHTEC_PCI_DEVICE(0x8532, SWITCHTEC_GEN3), //PFX 32xG3 1732 SWITCHTEC_PCI_DEVICE(0x8533, SWITCHTEC_GEN3), //PFX 48xG3 1733 SWITCHTEC_PCI_DEVICE(0x8534, SWITCHTEC_GEN3), //PFX 64xG3 1734 SWITCHTEC_PCI_DEVICE(0x8535, SWITCHTEC_GEN3), //PFX 80xG3 1735 SWITCHTEC_PCI_DEVICE(0x8536, SWITCHTEC_GEN3), //PFX 96xG3 1736 SWITCHTEC_PCI_DEVICE(0x8541, SWITCHTEC_GEN3), //PSX 24xG3 1737 SWITCHTEC_PCI_DEVICE(0x8542, SWITCHTEC_GEN3), //PSX 32xG3 1738 SWITCHTEC_PCI_DEVICE(0x8543, SWITCHTEC_GEN3), //PSX 48xG3 1739 SWITCHTEC_PCI_DEVICE(0x8544, SWITCHTEC_GEN3), //PSX 64xG3 1740 SWITCHTEC_PCI_DEVICE(0x8545, SWITCHTEC_GEN3), //PSX 80xG3 1741 SWITCHTEC_PCI_DEVICE(0x8546, SWITCHTEC_GEN3), //PSX 96xG3 1742 SWITCHTEC_PCI_DEVICE(0x8551, SWITCHTEC_GEN3), //PAX 24XG3 1743 SWITCHTEC_PCI_DEVICE(0x8552, SWITCHTEC_GEN3), //PAX 32XG3 1744 SWITCHTEC_PCI_DEVICE(0x8553, SWITCHTEC_GEN3), //PAX 48XG3 1745 SWITCHTEC_PCI_DEVICE(0x8554, SWITCHTEC_GEN3), //PAX 64XG3 1746 SWITCHTEC_PCI_DEVICE(0x8555, SWITCHTEC_GEN3), //PAX 80XG3 1747 SWITCHTEC_PCI_DEVICE(0x8556, SWITCHTEC_GEN3), //PAX 96XG3 1748 SWITCHTEC_PCI_DEVICE(0x8561, SWITCHTEC_GEN3), //PFXL 24XG3 1749 SWITCHTEC_PCI_DEVICE(0x8562, SWITCHTEC_GEN3), //PFXL 32XG3 1750 SWITCHTEC_PCI_DEVICE(0x8563, SWITCHTEC_GEN3), //PFXL 48XG3 1751 SWITCHTEC_PCI_DEVICE(0x8564, SWITCHTEC_GEN3), //PFXL 64XG3 1752 SWITCHTEC_PCI_DEVICE(0x8565, SWITCHTEC_GEN3), //PFXL 80XG3 1753 SWITCHTEC_PCI_DEVICE(0x8566, SWITCHTEC_GEN3), //PFXL 96XG3 1754 SWITCHTEC_PCI_DEVICE(0x8571, SWITCHTEC_GEN3), //PFXI 24XG3 1755 SWITCHTEC_PCI_DEVICE(0x8572, SWITCHTEC_GEN3), //PFXI 32XG3 1756 SWITCHTEC_PCI_DEVICE(0x8573, SWITCHTEC_GEN3), //PFXI 48XG3 1757 SWITCHTEC_PCI_DEVICE(0x8574, SWITCHTEC_GEN3), //PFXI 64XG3 1758 SWITCHTEC_PCI_DEVICE(0x8575, SWITCHTEC_GEN3), //PFXI 80XG3 1759 SWITCHTEC_PCI_DEVICE(0x8576, SWITCHTEC_GEN3), //PFXI 96XG3 1760 SWITCHTEC_PCI_DEVICE(0x4000, SWITCHTEC_GEN4), //PFX 100XG4 1761 SWITCHTEC_PCI_DEVICE(0x4084, SWITCHTEC_GEN4), //PFX 84XG4 1762 SWITCHTEC_PCI_DEVICE(0x4068, SWITCHTEC_GEN4), //PFX 68XG4 1763 SWITCHTEC_PCI_DEVICE(0x4052, SWITCHTEC_GEN4), //PFX 52XG4 1764 SWITCHTEC_PCI_DEVICE(0x4036, SWITCHTEC_GEN4), //PFX 36XG4 1765 SWITCHTEC_PCI_DEVICE(0x4028, SWITCHTEC_GEN4), //PFX 28XG4 1766 SWITCHTEC_PCI_DEVICE(0x4100, SWITCHTEC_GEN4), //PSX 100XG4 1767 SWITCHTEC_PCI_DEVICE(0x4184, SWITCHTEC_GEN4), //PSX 84XG4 1768 SWITCHTEC_PCI_DEVICE(0x4168, SWITCHTEC_GEN4), //PSX 68XG4 1769 SWITCHTEC_PCI_DEVICE(0x4152, SWITCHTEC_GEN4), //PSX 52XG4 1770 SWITCHTEC_PCI_DEVICE(0x4136, SWITCHTEC_GEN4), //PSX 36XG4 1771 SWITCHTEC_PCI_DEVICE(0x4128, SWITCHTEC_GEN4), //PSX 28XG4 1772 SWITCHTEC_PCI_DEVICE(0x4200, SWITCHTEC_GEN4), //PAX 100XG4 1773 SWITCHTEC_PCI_DEVICE(0x4284, SWITCHTEC_GEN4), //PAX 84XG4 1774 SWITCHTEC_PCI_DEVICE(0x4268, SWITCHTEC_GEN4), //PAX 68XG4 1775 SWITCHTEC_PCI_DEVICE(0x4252, SWITCHTEC_GEN4), //PAX 52XG4 1776 SWITCHTEC_PCI_DEVICE(0x4236, SWITCHTEC_GEN4), //PAX 36XG4 1777 SWITCHTEC_PCI_DEVICE(0x4228, SWITCHTEC_GEN4), //PAX 28XG4 1778 SWITCHTEC_PCI_DEVICE(0x4352, SWITCHTEC_GEN4), //PFXA 52XG4 1779 SWITCHTEC_PCI_DEVICE(0x4336, SWITCHTEC_GEN4), //PFXA 36XG4 1780 SWITCHTEC_PCI_DEVICE(0x4328, SWITCHTEC_GEN4), //PFXA 28XG4 1781 SWITCHTEC_PCI_DEVICE(0x4452, SWITCHTEC_GEN4), //PSXA 52XG4 1782 SWITCHTEC_PCI_DEVICE(0x4436, SWITCHTEC_GEN4), //PSXA 36XG4 1783 SWITCHTEC_PCI_DEVICE(0x4428, SWITCHTEC_GEN4), //PSXA 28XG4 1784 SWITCHTEC_PCI_DEVICE(0x4552, SWITCHTEC_GEN4), //PAXA 52XG4 1785 SWITCHTEC_PCI_DEVICE(0x4536, SWITCHTEC_GEN4), //PAXA 36XG4 1786 SWITCHTEC_PCI_DEVICE(0x4528, SWITCHTEC_GEN4), //PAXA 28XG4 1787 {0} 1788 }; 1789 MODULE_DEVICE_TABLE(pci, switchtec_pci_tbl); 1790 1791 static struct pci_driver switchtec_pci_driver = { 1792 .name = KBUILD_MODNAME, 1793 .id_table = switchtec_pci_tbl, 1794 .probe = switchtec_pci_probe, 1795 .remove = switchtec_pci_remove, 1796 }; 1797 1798 static int __init switchtec_init(void) 1799 { 1800 int rc; 1801 1802 rc = alloc_chrdev_region(&switchtec_devt, 0, max_devices, 1803 "switchtec"); 1804 if (rc) 1805 return rc; 1806 1807 switchtec_class = class_create("switchtec"); 1808 if (IS_ERR(switchtec_class)) { 1809 rc = PTR_ERR(switchtec_class); 1810 goto err_create_class; 1811 } 1812 1813 rc = pci_register_driver(&switchtec_pci_driver); 1814 if (rc) 1815 goto err_pci_register; 1816 1817 pr_info(KBUILD_MODNAME ": loaded.\n"); 1818 1819 return 0; 1820 1821 err_pci_register: 1822 class_destroy(switchtec_class); 1823 1824 err_create_class: 1825 unregister_chrdev_region(switchtec_devt, max_devices); 1826 1827 return rc; 1828 } 1829 module_init(switchtec_init); 1830 1831 static void __exit switchtec_exit(void) 1832 { 1833 pci_unregister_driver(&switchtec_pci_driver); 1834 class_destroy(switchtec_class); 1835 unregister_chrdev_region(switchtec_devt, max_devices); 1836 ida_destroy(&switchtec_minor_ida); 1837 1838 pr_info(KBUILD_MODNAME ": unloaded.\n"); 1839 } 1840 module_exit(switchtec_exit); 1841