1 | /* |
2 | * This file is part of the Chelsio FCoE driver for Linux. |
3 | * |
4 | * Copyright (c) 2008-2012 Chelsio Communications, Inc. All rights reserved. |
5 | * |
6 | * This software is available to you under a choice of one of two |
7 | * licenses. You may choose to be licensed under the terms of the GNU |
8 | * General Public License (GPL) Version 2, available from the file |
9 | * COPYING in the main directory of this source tree, or the |
10 | * OpenIB.org BSD license below: |
11 | * |
12 | * Redistribution and use in source and binary forms, with or |
13 | * without modification, are permitted provided that the following |
14 | * conditions are met: |
15 | * |
16 | * - Redistributions of source code must retain the above |
17 | * copyright notice, this list of conditions and the following |
18 | * disclaimer. |
19 | * |
20 | * - Redistributions in binary form must reproduce the above |
21 | * copyright notice, this list of conditions and the following |
22 | * disclaimer in the documentation and/or other materials |
23 | * provided with the distribution. |
24 | * |
25 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, |
26 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
27 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
28 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS |
29 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN |
30 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN |
31 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
32 | * SOFTWARE. |
33 | */ |
34 | |
35 | #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt |
36 | |
37 | #include <linux/kernel.h> |
38 | #include <linux/module.h> |
39 | #include <linux/init.h> |
40 | #include <linux/pci.h> |
41 | #include <linux/mm.h> |
42 | #include <linux/notifier.h> |
43 | #include <linux/kdebug.h> |
44 | #include <linux/seq_file.h> |
45 | #include <linux/debugfs.h> |
46 | #include <linux/string.h> |
47 | #include <linux/export.h> |
48 | |
49 | #include "csio_init.h" |
50 | #include "csio_defs.h" |
51 | |
52 | #define CSIO_MIN_MEMPOOL_SZ 64 |
53 | |
54 | static struct dentry *csio_debugfs_root; |
55 | |
56 | static struct scsi_transport_template *csio_fcoe_transport; |
57 | static struct scsi_transport_template *csio_fcoe_transport_vport; |
58 | |
59 | /* |
60 | * debugfs support |
61 | */ |
62 | static ssize_t |
63 | csio_mem_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) |
64 | { |
65 | loff_t pos = *ppos; |
66 | loff_t avail = file_inode(f: file)->i_size; |
67 | unsigned int mem = (uintptr_t)file->private_data & 3; |
68 | struct csio_hw *hw = file->private_data - mem; |
69 | |
70 | if (pos < 0) |
71 | return -EINVAL; |
72 | if (pos >= avail) |
73 | return 0; |
74 | if (count > avail - pos) |
75 | count = avail - pos; |
76 | |
77 | while (count) { |
78 | size_t len; |
79 | int ret, ofst; |
80 | __be32 data[16]; |
81 | |
82 | if (mem == MEM_MC) |
83 | ret = hw->chip_ops->chip_mc_read(hw, 0, pos, |
84 | data, NULL); |
85 | else |
86 | ret = hw->chip_ops->chip_edc_read(hw, mem, pos, |
87 | data, NULL); |
88 | if (ret) |
89 | return ret; |
90 | |
91 | ofst = pos % sizeof(data); |
92 | len = min(count, sizeof(data) - ofst); |
93 | if (copy_to_user(to: buf, from: (u8 *)data + ofst, n: len)) |
94 | return -EFAULT; |
95 | |
96 | buf += len; |
97 | pos += len; |
98 | count -= len; |
99 | } |
100 | count = pos - *ppos; |
101 | *ppos = pos; |
102 | return count; |
103 | } |
104 | |
105 | static const struct file_operations csio_mem_debugfs_fops = { |
106 | .owner = THIS_MODULE, |
107 | .open = simple_open, |
108 | .read = csio_mem_read, |
109 | .llseek = default_llseek, |
110 | }; |
111 | |
112 | void csio_add_debugfs_mem(struct csio_hw *hw, const char *name, |
113 | unsigned int idx, unsigned int size_mb) |
114 | { |
115 | debugfs_create_file_size(name, S_IRUSR, parent: hw->debugfs_root, |
116 | data: (void *)hw + idx, fops: &csio_mem_debugfs_fops, |
117 | file_size: size_mb << 20); |
118 | } |
119 | |
120 | static int csio_setup_debugfs(struct csio_hw *hw) |
121 | { |
122 | int i; |
123 | |
124 | if (IS_ERR_OR_NULL(ptr: hw->debugfs_root)) |
125 | return -1; |
126 | |
127 | i = csio_rd_reg32(hw, MA_TARGET_MEM_ENABLE_A); |
128 | if (i & EDRAM0_ENABLE_F) |
129 | csio_add_debugfs_mem(hw, name: "edc0" , idx: MEM_EDC0, size_mb: 5); |
130 | if (i & EDRAM1_ENABLE_F) |
131 | csio_add_debugfs_mem(hw, name: "edc1" , idx: MEM_EDC1, size_mb: 5); |
132 | |
133 | hw->chip_ops->chip_dfs_create_ext_mem(hw); |
134 | return 0; |
135 | } |
136 | |
137 | /* |
138 | * csio_dfs_create - Creates and sets up per-hw debugfs. |
139 | * |
140 | */ |
141 | static int |
142 | csio_dfs_create(struct csio_hw *hw) |
143 | { |
144 | if (csio_debugfs_root) { |
145 | hw->debugfs_root = debugfs_create_dir(name: pci_name(pdev: hw->pdev), |
146 | parent: csio_debugfs_root); |
147 | csio_setup_debugfs(hw); |
148 | } |
149 | |
150 | return 0; |
151 | } |
152 | |
153 | /* |
154 | * csio_dfs_destroy - Destroys per-hw debugfs. |
155 | */ |
156 | static void |
157 | csio_dfs_destroy(struct csio_hw *hw) |
158 | { |
159 | debugfs_remove_recursive(dentry: hw->debugfs_root); |
160 | } |
161 | |
162 | /* |
163 | * csio_dfs_init - Debug filesystem initialization for the module. |
164 | * |
165 | */ |
166 | static void |
167 | csio_dfs_init(void) |
168 | { |
169 | csio_debugfs_root = debugfs_create_dir(KBUILD_MODNAME, NULL); |
170 | } |
171 | |
172 | /* |
173 | * csio_dfs_exit - debugfs cleanup for the module. |
174 | */ |
175 | static void |
176 | csio_dfs_exit(void) |
177 | { |
178 | debugfs_remove(dentry: csio_debugfs_root); |
179 | } |
180 | |
181 | /* |
182 | * csio_pci_init - PCI initialization. |
183 | * @pdev: PCI device. |
184 | * @bars: Bitmask of bars to be requested. |
185 | * |
186 | * Initializes the PCI function by enabling MMIO, setting bus |
187 | * mastership and setting DMA mask. |
188 | */ |
189 | static int |
190 | csio_pci_init(struct pci_dev *pdev, int *bars) |
191 | { |
192 | int rv = -ENODEV; |
193 | |
194 | *bars = pci_select_bars(dev: pdev, IORESOURCE_MEM); |
195 | |
196 | if (pci_enable_device_mem(dev: pdev)) |
197 | goto err; |
198 | |
199 | if (pci_request_selected_regions(pdev, *bars, KBUILD_MODNAME)) |
200 | goto err_disable_device; |
201 | |
202 | pci_set_master(dev: pdev); |
203 | pci_try_set_mwi(dev: pdev); |
204 | |
205 | rv = dma_set_mask_and_coherent(dev: &pdev->dev, DMA_BIT_MASK(64)); |
206 | if (rv) |
207 | rv = dma_set_mask_and_coherent(dev: &pdev->dev, DMA_BIT_MASK(32)); |
208 | if (rv) { |
209 | rv = -ENODEV; |
210 | dev_err(&pdev->dev, "No suitable DMA available.\n" ); |
211 | goto err_release_regions; |
212 | } |
213 | |
214 | return 0; |
215 | |
216 | err_release_regions: |
217 | pci_release_selected_regions(pdev, *bars); |
218 | err_disable_device: |
219 | pci_disable_device(dev: pdev); |
220 | err: |
221 | return rv; |
222 | |
223 | } |
224 | |
225 | /* |
226 | * csio_pci_exit - PCI unitialization. |
227 | * @pdev: PCI device. |
228 | * @bars: Bars to be released. |
229 | * |
230 | */ |
231 | static void |
232 | csio_pci_exit(struct pci_dev *pdev, int *bars) |
233 | { |
234 | pci_release_selected_regions(pdev, *bars); |
235 | pci_disable_device(dev: pdev); |
236 | } |
237 | |
238 | /* |
239 | * csio_hw_init_workers - Initialize the HW module's worker threads. |
240 | * @hw: HW module. |
241 | * |
242 | */ |
243 | static void |
244 | csio_hw_init_workers(struct csio_hw *hw) |
245 | { |
246 | INIT_WORK(&hw->evtq_work, csio_evtq_worker); |
247 | } |
248 | |
249 | static void |
250 | csio_hw_exit_workers(struct csio_hw *hw) |
251 | { |
252 | cancel_work_sync(work: &hw->evtq_work); |
253 | } |
254 | |
255 | static int |
256 | csio_create_queues(struct csio_hw *hw) |
257 | { |
258 | int i, j; |
259 | struct csio_mgmtm *mgmtm = csio_hw_to_mgmtm(hw); |
260 | int rv; |
261 | struct csio_scsi_cpu_info *info; |
262 | |
263 | if (hw->flags & CSIO_HWF_Q_FW_ALLOCED) |
264 | return 0; |
265 | |
266 | if (hw->intr_mode != CSIO_IM_MSIX) { |
267 | rv = csio_wr_iq_create(hw, NULL, hw->intr_iq_idx, |
268 | 0, hw->pport[0].portid, false, NULL); |
269 | if (rv != 0) { |
270 | csio_err(hw, " Forward Interrupt IQ failed!: %d\n" , rv); |
271 | return rv; |
272 | } |
273 | } |
274 | |
275 | /* FW event queue */ |
276 | rv = csio_wr_iq_create(hw, NULL, hw->fwevt_iq_idx, |
277 | csio_get_fwevt_intr_idx(hw), |
278 | hw->pport[0].portid, true, NULL); |
279 | if (rv != 0) { |
280 | csio_err(hw, "FW event IQ config failed!: %d\n" , rv); |
281 | return rv; |
282 | } |
283 | |
284 | /* Create mgmt queue */ |
285 | rv = csio_wr_eq_create(hw, NULL, mgmtm->eq_idx, |
286 | mgmtm->iq_idx, hw->pport[0].portid, NULL); |
287 | |
288 | if (rv != 0) { |
289 | csio_err(hw, "Mgmt EQ create failed!: %d\n" , rv); |
290 | goto err; |
291 | } |
292 | |
293 | /* Create SCSI queues */ |
294 | for (i = 0; i < hw->num_pports; i++) { |
295 | info = &hw->scsi_cpu_info[i]; |
296 | |
297 | for (j = 0; j < info->max_cpus; j++) { |
298 | struct csio_scsi_qset *sqset = &hw->sqset[i][j]; |
299 | |
300 | rv = csio_wr_iq_create(hw, NULL, sqset->iq_idx, |
301 | sqset->intr_idx, i, false, NULL); |
302 | if (rv != 0) { |
303 | csio_err(hw, |
304 | "SCSI module IQ config failed [%d][%d]:%d\n" , |
305 | i, j, rv); |
306 | goto err; |
307 | } |
308 | rv = csio_wr_eq_create(hw, NULL, sqset->eq_idx, |
309 | sqset->iq_idx, i, NULL); |
310 | if (rv != 0) { |
311 | csio_err(hw, |
312 | "SCSI module EQ config failed [%d][%d]:%d\n" , |
313 | i, j, rv); |
314 | goto err; |
315 | } |
316 | } /* for all CPUs */ |
317 | } /* For all ports */ |
318 | |
319 | hw->flags |= CSIO_HWF_Q_FW_ALLOCED; |
320 | return 0; |
321 | err: |
322 | csio_wr_destroy_queues(hw, cmd: true); |
323 | return -EINVAL; |
324 | } |
325 | |
326 | /* |
327 | * csio_config_queues - Configure the DMA queues. |
328 | * @hw: HW module. |
329 | * |
330 | * Allocates memory for queues are registers them with FW. |
331 | */ |
332 | int |
333 | csio_config_queues(struct csio_hw *hw) |
334 | { |
335 | int i, j, idx, k = 0; |
336 | int rv; |
337 | struct csio_scsi_qset *sqset; |
338 | struct csio_mgmtm *mgmtm = csio_hw_to_mgmtm(hw); |
339 | struct csio_scsi_qset *orig; |
340 | struct csio_scsi_cpu_info *info; |
341 | |
342 | if (hw->flags & CSIO_HWF_Q_MEM_ALLOCED) |
343 | return csio_create_queues(hw); |
344 | |
345 | /* Calculate number of SCSI queues for MSIX we would like */ |
346 | hw->num_scsi_msix_cpus = num_online_cpus(); |
347 | hw->num_sqsets = num_online_cpus() * hw->num_pports; |
348 | |
349 | if (hw->num_sqsets > CSIO_MAX_SCSI_QSETS) { |
350 | hw->num_sqsets = CSIO_MAX_SCSI_QSETS; |
351 | hw->num_scsi_msix_cpus = CSIO_MAX_SCSI_CPU; |
352 | } |
353 | |
354 | /* Initialize max_cpus, may get reduced during msix allocations */ |
355 | for (i = 0; i < hw->num_pports; i++) |
356 | hw->scsi_cpu_info[i].max_cpus = hw->num_scsi_msix_cpus; |
357 | |
358 | csio_dbg(hw, "nsqsets:%d scpus:%d\n" , |
359 | hw->num_sqsets, hw->num_scsi_msix_cpus); |
360 | |
361 | csio_intr_enable(hw); |
362 | |
363 | if (hw->intr_mode != CSIO_IM_MSIX) { |
364 | |
365 | /* Allocate Forward interrupt iq. */ |
366 | hw->intr_iq_idx = csio_wr_alloc_q(hw, CSIO_INTR_IQSIZE, |
367 | CSIO_INTR_WRSIZE, CSIO_INGRESS, |
368 | (void *)hw, 0, 0, NULL); |
369 | if (hw->intr_iq_idx == -1) { |
370 | csio_err(hw, |
371 | "Forward interrupt queue creation failed\n" ); |
372 | goto intr_disable; |
373 | } |
374 | } |
375 | |
376 | /* Allocate the FW evt queue */ |
377 | hw->fwevt_iq_idx = csio_wr_alloc_q(hw, CSIO_FWEVT_IQSIZE, |
378 | CSIO_FWEVT_WRSIZE, |
379 | CSIO_INGRESS, (void *)hw, |
380 | CSIO_FWEVT_FLBUFS, 0, |
381 | csio_fwevt_intx_handler); |
382 | if (hw->fwevt_iq_idx == -1) { |
383 | csio_err(hw, "FW evt queue creation failed\n" ); |
384 | goto intr_disable; |
385 | } |
386 | |
387 | /* Allocate the mgmt queue */ |
388 | mgmtm->eq_idx = csio_wr_alloc_q(hw, CSIO_MGMT_EQSIZE, |
389 | CSIO_MGMT_EQ_WRSIZE, |
390 | CSIO_EGRESS, (void *)hw, 0, 0, NULL); |
391 | if (mgmtm->eq_idx == -1) { |
392 | csio_err(hw, "Failed to alloc egress queue for mgmt module\n" ); |
393 | goto intr_disable; |
394 | } |
395 | |
396 | /* Use FW IQ for MGMT req completion */ |
397 | mgmtm->iq_idx = hw->fwevt_iq_idx; |
398 | |
399 | /* Allocate SCSI queues */ |
400 | for (i = 0; i < hw->num_pports; i++) { |
401 | info = &hw->scsi_cpu_info[i]; |
402 | |
403 | for (j = 0; j < hw->num_scsi_msix_cpus; j++) { |
404 | sqset = &hw->sqset[i][j]; |
405 | |
406 | if (j >= info->max_cpus) { |
407 | k = j % info->max_cpus; |
408 | orig = &hw->sqset[i][k]; |
409 | sqset->eq_idx = orig->eq_idx; |
410 | sqset->iq_idx = orig->iq_idx; |
411 | continue; |
412 | } |
413 | |
414 | idx = csio_wr_alloc_q(hw, csio_scsi_eqsize, 0, |
415 | CSIO_EGRESS, (void *)hw, 0, 0, |
416 | NULL); |
417 | if (idx == -1) { |
418 | csio_err(hw, "EQ creation failed for idx:%d\n" , |
419 | idx); |
420 | goto intr_disable; |
421 | } |
422 | |
423 | sqset->eq_idx = idx; |
424 | |
425 | idx = csio_wr_alloc_q(hw, CSIO_SCSI_IQSIZE, |
426 | CSIO_SCSI_IQ_WRSZ, CSIO_INGRESS, |
427 | (void *)hw, 0, 0, |
428 | csio_scsi_intx_handler); |
429 | if (idx == -1) { |
430 | csio_err(hw, "IQ creation failed for idx:%d\n" , |
431 | idx); |
432 | goto intr_disable; |
433 | } |
434 | sqset->iq_idx = idx; |
435 | } /* for all CPUs */ |
436 | } /* For all ports */ |
437 | |
438 | hw->flags |= CSIO_HWF_Q_MEM_ALLOCED; |
439 | |
440 | rv = csio_create_queues(hw); |
441 | if (rv != 0) |
442 | goto intr_disable; |
443 | |
444 | /* |
445 | * Now request IRQs for the vectors. In the event of a failure, |
446 | * cleanup is handled internally by this function. |
447 | */ |
448 | rv = csio_request_irqs(hw); |
449 | if (rv != 0) |
450 | return -EINVAL; |
451 | |
452 | return 0; |
453 | |
454 | intr_disable: |
455 | csio_intr_disable(hw, false); |
456 | |
457 | return -EINVAL; |
458 | } |
459 | |
460 | static int |
461 | csio_resource_alloc(struct csio_hw *hw) |
462 | { |
463 | struct csio_wrm *wrm = csio_hw_to_wrm(hw); |
464 | int rv = -ENOMEM; |
465 | |
466 | wrm->num_q = ((CSIO_MAX_SCSI_QSETS * 2) + CSIO_HW_NIQ + |
467 | CSIO_HW_NEQ + CSIO_HW_NFLQ + CSIO_HW_NINTXQ); |
468 | |
469 | hw->mb_mempool = mempool_create_kmalloc_pool(CSIO_MIN_MEMPOOL_SZ, |
470 | size: sizeof(struct csio_mb)); |
471 | if (!hw->mb_mempool) |
472 | goto err; |
473 | |
474 | hw->rnode_mempool = mempool_create_kmalloc_pool(CSIO_MIN_MEMPOOL_SZ, |
475 | size: sizeof(struct csio_rnode)); |
476 | if (!hw->rnode_mempool) |
477 | goto err_free_mb_mempool; |
478 | |
479 | hw->scsi_dma_pool = dma_pool_create(name: "csio_scsi_dma_pool" , |
480 | dev: &hw->pdev->dev, CSIO_SCSI_RSP_LEN, |
481 | align: 8, allocation: 0); |
482 | if (!hw->scsi_dma_pool) |
483 | goto err_free_rn_pool; |
484 | |
485 | return 0; |
486 | |
487 | err_free_rn_pool: |
488 | mempool_destroy(pool: hw->rnode_mempool); |
489 | hw->rnode_mempool = NULL; |
490 | err_free_mb_mempool: |
491 | mempool_destroy(pool: hw->mb_mempool); |
492 | hw->mb_mempool = NULL; |
493 | err: |
494 | return rv; |
495 | } |
496 | |
497 | static void |
498 | csio_resource_free(struct csio_hw *hw) |
499 | { |
500 | dma_pool_destroy(pool: hw->scsi_dma_pool); |
501 | hw->scsi_dma_pool = NULL; |
502 | mempool_destroy(pool: hw->rnode_mempool); |
503 | hw->rnode_mempool = NULL; |
504 | mempool_destroy(pool: hw->mb_mempool); |
505 | hw->mb_mempool = NULL; |
506 | } |
507 | |
508 | /* |
509 | * csio_hw_alloc - Allocate and initialize the HW module. |
510 | * @pdev: PCI device. |
511 | * |
512 | * Allocates HW structure, DMA, memory resources, maps BARS to |
513 | * host memory and initializes HW module. |
514 | */ |
515 | static struct csio_hw *csio_hw_alloc(struct pci_dev *pdev) |
516 | { |
517 | struct csio_hw *hw; |
518 | |
519 | hw = kzalloc(size: sizeof(struct csio_hw), GFP_KERNEL); |
520 | if (!hw) |
521 | goto err; |
522 | |
523 | hw->pdev = pdev; |
524 | strncpy(p: hw->drv_version, CSIO_DRV_VERSION, size: 32); |
525 | |
526 | /* memory pool/DMA pool allocation */ |
527 | if (csio_resource_alloc(hw)) |
528 | goto err_free_hw; |
529 | |
530 | /* Get the start address of registers from BAR 0 */ |
531 | hw->regstart = ioremap(pci_resource_start(pdev, 0), |
532 | pci_resource_len(pdev, 0)); |
533 | if (!hw->regstart) { |
534 | csio_err(hw, "Could not map BAR 0, regstart = %p\n" , |
535 | hw->regstart); |
536 | goto err_resource_free; |
537 | } |
538 | |
539 | csio_hw_init_workers(hw); |
540 | |
541 | if (csio_hw_init(hw)) |
542 | goto err_unmap_bar; |
543 | |
544 | csio_dfs_create(hw); |
545 | |
546 | csio_dbg(hw, "hw:%p\n" , hw); |
547 | |
548 | return hw; |
549 | |
550 | err_unmap_bar: |
551 | csio_hw_exit_workers(hw); |
552 | iounmap(addr: hw->regstart); |
553 | err_resource_free: |
554 | csio_resource_free(hw); |
555 | err_free_hw: |
556 | kfree(objp: hw); |
557 | err: |
558 | return NULL; |
559 | } |
560 | |
561 | /* |
562 | * csio_hw_free - Uninitialize and free the HW module. |
563 | * @hw: The HW module |
564 | * |
565 | * Disable interrupts, uninit the HW module, free resources, free hw. |
566 | */ |
567 | static void |
568 | csio_hw_free(struct csio_hw *hw) |
569 | { |
570 | csio_intr_disable(hw, true); |
571 | csio_hw_exit_workers(hw); |
572 | csio_hw_exit(hw); |
573 | iounmap(addr: hw->regstart); |
574 | csio_dfs_destroy(hw); |
575 | csio_resource_free(hw); |
576 | kfree(objp: hw); |
577 | } |
578 | |
579 | /** |
580 | * csio_shost_init - Create and initialize the lnode module. |
581 | * @hw: The HW module. |
582 | * @dev: The device associated with this invocation. |
583 | * @probe: Called from probe context or not? |
584 | * @pln: Parent lnode if any. |
585 | * |
586 | * Allocates lnode structure via scsi_host_alloc, initializes |
587 | * shost, initializes lnode module and registers with SCSI ML |
588 | * via scsi_host_add. This function is shared between physical and |
589 | * virtual node ports. |
590 | */ |
591 | struct csio_lnode * |
592 | csio_shost_init(struct csio_hw *hw, struct device *dev, |
593 | bool probe, struct csio_lnode *pln) |
594 | { |
595 | struct Scsi_Host *shost = NULL; |
596 | struct csio_lnode *ln; |
597 | |
598 | csio_fcoe_shost_template.cmd_per_lun = csio_lun_qdepth; |
599 | csio_fcoe_shost_vport_template.cmd_per_lun = csio_lun_qdepth; |
600 | |
601 | /* |
602 | * hw->pdev is the physical port's PCI dev structure, |
603 | * which will be different from the NPIV dev structure. |
604 | */ |
605 | if (dev == &hw->pdev->dev) |
606 | shost = scsi_host_alloc( |
607 | &csio_fcoe_shost_template, |
608 | sizeof(struct csio_lnode)); |
609 | else |
610 | shost = scsi_host_alloc( |
611 | &csio_fcoe_shost_vport_template, |
612 | sizeof(struct csio_lnode)); |
613 | |
614 | if (!shost) |
615 | goto err; |
616 | |
617 | ln = shost_priv(shost); |
618 | memset(ln, 0, sizeof(struct csio_lnode)); |
619 | |
620 | /* Link common lnode to this lnode */ |
621 | ln->dev_num = (shost->host_no << 16); |
622 | |
623 | shost->can_queue = CSIO_MAX_QUEUE; |
624 | shost->this_id = -1; |
625 | shost->unique_id = shost->host_no; |
626 | shost->max_cmd_len = 16; /* Max CDB length supported */ |
627 | shost->max_id = min_t(uint32_t, csio_fcoe_rnodes, |
628 | hw->fres_info.max_ssns); |
629 | shost->max_lun = CSIO_MAX_LUN; |
630 | if (dev == &hw->pdev->dev) |
631 | shost->transportt = csio_fcoe_transport; |
632 | else |
633 | shost->transportt = csio_fcoe_transport_vport; |
634 | |
635 | /* root lnode */ |
636 | if (!hw->rln) |
637 | hw->rln = ln; |
638 | |
639 | /* Other initialization here: Common, Transport specific */ |
640 | if (csio_lnode_init(ln, hw, pln)) |
641 | goto err_shost_put; |
642 | |
643 | if (scsi_add_host_with_dma(shost, dev, &hw->pdev->dev)) |
644 | goto err_lnode_exit; |
645 | |
646 | return ln; |
647 | |
648 | err_lnode_exit: |
649 | csio_lnode_exit(ln); |
650 | err_shost_put: |
651 | scsi_host_put(t: shost); |
652 | err: |
653 | return NULL; |
654 | } |
655 | |
656 | /** |
657 | * csio_shost_exit - De-instantiate the shost. |
658 | * @ln: The lnode module corresponding to the shost. |
659 | * |
660 | */ |
661 | void |
662 | csio_shost_exit(struct csio_lnode *ln) |
663 | { |
664 | struct Scsi_Host *shost = csio_ln_to_shost(ln); |
665 | struct csio_hw *hw = csio_lnode_to_hw(ln); |
666 | |
667 | /* Inform transport */ |
668 | fc_remove_host(shost); |
669 | |
670 | /* Inform SCSI ML */ |
671 | scsi_remove_host(shost); |
672 | |
673 | /* Flush all the events, so that any rnode removal events |
674 | * already queued are all handled, before we remove the lnode. |
675 | */ |
676 | spin_lock_irq(lock: &hw->lock); |
677 | csio_evtq_flush(hw); |
678 | spin_unlock_irq(lock: &hw->lock); |
679 | |
680 | csio_lnode_exit(ln); |
681 | scsi_host_put(t: shost); |
682 | } |
683 | |
684 | struct csio_lnode * |
685 | csio_lnode_alloc(struct csio_hw *hw) |
686 | { |
687 | return csio_shost_init(hw, dev: &hw->pdev->dev, probe: false, NULL); |
688 | } |
689 | |
690 | void |
691 | csio_lnodes_block_request(struct csio_hw *hw) |
692 | { |
693 | struct Scsi_Host *shost; |
694 | struct csio_lnode *sln; |
695 | struct csio_lnode *ln; |
696 | struct list_head *cur_ln, *cur_cln; |
697 | struct csio_lnode **lnode_list; |
698 | int cur_cnt = 0, ii; |
699 | |
700 | lnode_list = kzalloc(size: (sizeof(struct csio_lnode *) * hw->num_lns), |
701 | GFP_KERNEL); |
702 | if (!lnode_list) { |
703 | csio_err(hw, "Failed to allocate lnodes_list" ); |
704 | return; |
705 | } |
706 | |
707 | spin_lock_irq(lock: &hw->lock); |
708 | /* Traverse sibling lnodes */ |
709 | list_for_each(cur_ln, &hw->sln_head) { |
710 | sln = (struct csio_lnode *) cur_ln; |
711 | lnode_list[cur_cnt++] = sln; |
712 | |
713 | /* Traverse children lnodes */ |
714 | list_for_each(cur_cln, &sln->cln_head) |
715 | lnode_list[cur_cnt++] = (struct csio_lnode *) cur_cln; |
716 | } |
717 | spin_unlock_irq(lock: &hw->lock); |
718 | |
719 | for (ii = 0; ii < cur_cnt; ii++) { |
720 | csio_dbg(hw, "Blocking IOs on lnode: %p\n" , lnode_list[ii]); |
721 | ln = lnode_list[ii]; |
722 | shost = csio_ln_to_shost(ln); |
723 | scsi_block_requests(shost); |
724 | |
725 | } |
726 | kfree(objp: lnode_list); |
727 | } |
728 | |
729 | void |
730 | csio_lnodes_unblock_request(struct csio_hw *hw) |
731 | { |
732 | struct csio_lnode *ln; |
733 | struct Scsi_Host *shost; |
734 | struct csio_lnode *sln; |
735 | struct list_head *cur_ln, *cur_cln; |
736 | struct csio_lnode **lnode_list; |
737 | int cur_cnt = 0, ii; |
738 | |
739 | lnode_list = kzalloc(size: (sizeof(struct csio_lnode *) * hw->num_lns), |
740 | GFP_KERNEL); |
741 | if (!lnode_list) { |
742 | csio_err(hw, "Failed to allocate lnodes_list" ); |
743 | return; |
744 | } |
745 | |
746 | spin_lock_irq(lock: &hw->lock); |
747 | /* Traverse sibling lnodes */ |
748 | list_for_each(cur_ln, &hw->sln_head) { |
749 | sln = (struct csio_lnode *) cur_ln; |
750 | lnode_list[cur_cnt++] = sln; |
751 | |
752 | /* Traverse children lnodes */ |
753 | list_for_each(cur_cln, &sln->cln_head) |
754 | lnode_list[cur_cnt++] = (struct csio_lnode *) cur_cln; |
755 | } |
756 | spin_unlock_irq(lock: &hw->lock); |
757 | |
758 | for (ii = 0; ii < cur_cnt; ii++) { |
759 | csio_dbg(hw, "unblocking IOs on lnode: %p\n" , lnode_list[ii]); |
760 | ln = lnode_list[ii]; |
761 | shost = csio_ln_to_shost(ln); |
762 | scsi_unblock_requests(shost); |
763 | } |
764 | kfree(objp: lnode_list); |
765 | } |
766 | |
767 | void |
768 | csio_lnodes_block_by_port(struct csio_hw *hw, uint8_t portid) |
769 | { |
770 | struct csio_lnode *ln; |
771 | struct Scsi_Host *shost; |
772 | struct csio_lnode *sln; |
773 | struct list_head *cur_ln, *cur_cln; |
774 | struct csio_lnode **lnode_list; |
775 | int cur_cnt = 0, ii; |
776 | |
777 | lnode_list = kzalloc(size: (sizeof(struct csio_lnode *) * hw->num_lns), |
778 | GFP_KERNEL); |
779 | if (!lnode_list) { |
780 | csio_err(hw, "Failed to allocate lnodes_list" ); |
781 | return; |
782 | } |
783 | |
784 | spin_lock_irq(lock: &hw->lock); |
785 | /* Traverse sibling lnodes */ |
786 | list_for_each(cur_ln, &hw->sln_head) { |
787 | sln = (struct csio_lnode *) cur_ln; |
788 | if (sln->portid != portid) |
789 | continue; |
790 | |
791 | lnode_list[cur_cnt++] = sln; |
792 | |
793 | /* Traverse children lnodes */ |
794 | list_for_each(cur_cln, &sln->cln_head) |
795 | lnode_list[cur_cnt++] = (struct csio_lnode *) cur_cln; |
796 | } |
797 | spin_unlock_irq(lock: &hw->lock); |
798 | |
799 | for (ii = 0; ii < cur_cnt; ii++) { |
800 | csio_dbg(hw, "Blocking IOs on lnode: %p\n" , lnode_list[ii]); |
801 | ln = lnode_list[ii]; |
802 | shost = csio_ln_to_shost(ln); |
803 | scsi_block_requests(shost); |
804 | } |
805 | kfree(objp: lnode_list); |
806 | } |
807 | |
808 | void |
809 | csio_lnodes_unblock_by_port(struct csio_hw *hw, uint8_t portid) |
810 | { |
811 | struct csio_lnode *ln; |
812 | struct Scsi_Host *shost; |
813 | struct csio_lnode *sln; |
814 | struct list_head *cur_ln, *cur_cln; |
815 | struct csio_lnode **lnode_list; |
816 | int cur_cnt = 0, ii; |
817 | |
818 | lnode_list = kzalloc(size: (sizeof(struct csio_lnode *) * hw->num_lns), |
819 | GFP_KERNEL); |
820 | if (!lnode_list) { |
821 | csio_err(hw, "Failed to allocate lnodes_list" ); |
822 | return; |
823 | } |
824 | |
825 | spin_lock_irq(lock: &hw->lock); |
826 | /* Traverse sibling lnodes */ |
827 | list_for_each(cur_ln, &hw->sln_head) { |
828 | sln = (struct csio_lnode *) cur_ln; |
829 | if (sln->portid != portid) |
830 | continue; |
831 | lnode_list[cur_cnt++] = sln; |
832 | |
833 | /* Traverse children lnodes */ |
834 | list_for_each(cur_cln, &sln->cln_head) |
835 | lnode_list[cur_cnt++] = (struct csio_lnode *) cur_cln; |
836 | } |
837 | spin_unlock_irq(lock: &hw->lock); |
838 | |
839 | for (ii = 0; ii < cur_cnt; ii++) { |
840 | csio_dbg(hw, "unblocking IOs on lnode: %p\n" , lnode_list[ii]); |
841 | ln = lnode_list[ii]; |
842 | shost = csio_ln_to_shost(ln); |
843 | scsi_unblock_requests(shost); |
844 | } |
845 | kfree(objp: lnode_list); |
846 | } |
847 | |
848 | void |
849 | csio_lnodes_exit(struct csio_hw *hw, bool npiv) |
850 | { |
851 | struct csio_lnode *sln; |
852 | struct csio_lnode *ln; |
853 | struct list_head *cur_ln, *cur_cln; |
854 | struct csio_lnode **lnode_list; |
855 | int cur_cnt = 0, ii; |
856 | |
857 | lnode_list = kzalloc(size: (sizeof(struct csio_lnode *) * hw->num_lns), |
858 | GFP_KERNEL); |
859 | if (!lnode_list) { |
860 | csio_err(hw, "lnodes_exit: Failed to allocate lnodes_list.\n" ); |
861 | return; |
862 | } |
863 | |
864 | /* Get all child lnodes(NPIV ports) */ |
865 | spin_lock_irq(lock: &hw->lock); |
866 | list_for_each(cur_ln, &hw->sln_head) { |
867 | sln = (struct csio_lnode *) cur_ln; |
868 | |
869 | /* Traverse children lnodes */ |
870 | list_for_each(cur_cln, &sln->cln_head) |
871 | lnode_list[cur_cnt++] = (struct csio_lnode *) cur_cln; |
872 | } |
873 | spin_unlock_irq(lock: &hw->lock); |
874 | |
875 | /* Delete NPIV lnodes */ |
876 | for (ii = 0; ii < cur_cnt; ii++) { |
877 | csio_dbg(hw, "Deleting child lnode: %p\n" , lnode_list[ii]); |
878 | ln = lnode_list[ii]; |
879 | fc_vport_terminate(vport: ln->fc_vport); |
880 | } |
881 | |
882 | /* Delete only npiv lnodes */ |
883 | if (npiv) |
884 | goto free_lnodes; |
885 | |
886 | cur_cnt = 0; |
887 | /* Get all physical lnodes */ |
888 | spin_lock_irq(lock: &hw->lock); |
889 | /* Traverse sibling lnodes */ |
890 | list_for_each(cur_ln, &hw->sln_head) { |
891 | sln = (struct csio_lnode *) cur_ln; |
892 | lnode_list[cur_cnt++] = sln; |
893 | } |
894 | spin_unlock_irq(lock: &hw->lock); |
895 | |
896 | /* Delete physical lnodes */ |
897 | for (ii = 0; ii < cur_cnt; ii++) { |
898 | csio_dbg(hw, "Deleting parent lnode: %p\n" , lnode_list[ii]); |
899 | csio_shost_exit(ln: lnode_list[ii]); |
900 | } |
901 | |
902 | free_lnodes: |
903 | kfree(objp: lnode_list); |
904 | } |
905 | |
906 | /* |
907 | * csio_lnode_init_post: Set lnode attributes after starting HW. |
908 | * @ln: lnode. |
909 | * |
910 | */ |
911 | static void |
912 | csio_lnode_init_post(struct csio_lnode *ln) |
913 | { |
914 | struct Scsi_Host *shost = csio_ln_to_shost(ln); |
915 | |
916 | csio_fchost_attr_init(ln); |
917 | |
918 | scsi_scan_host(shost); |
919 | } |
920 | |
921 | /* |
922 | * csio_probe_one - Instantiate this function. |
923 | * @pdev: PCI device |
924 | * @id: Device ID |
925 | * |
926 | * This is the .probe() callback of the driver. This function: |
927 | * - Initializes the PCI function by enabling MMIO, setting bus |
928 | * mastership and setting DMA mask. |
929 | * - Allocates HW structure, DMA, memory resources, maps BARS to |
930 | * host memory and initializes HW module. |
931 | * - Allocates lnode structure via scsi_host_alloc, initializes |
932 | * shost, initialized lnode module and registers with SCSI ML |
933 | * via scsi_host_add. |
934 | * - Enables interrupts, and starts the chip by kicking off the |
935 | * HW state machine. |
936 | * - Once hardware is ready, initiated scan of the host via |
937 | * scsi_scan_host. |
938 | */ |
939 | static int csio_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) |
940 | { |
941 | int rv; |
942 | int bars; |
943 | int i; |
944 | struct csio_hw *hw; |
945 | struct csio_lnode *ln; |
946 | |
947 | /* probe only T5 and T6 cards */ |
948 | if (!csio_is_t5(chip: (pdev->device & CSIO_HW_CHIP_MASK)) && |
949 | !csio_is_t6(chip: (pdev->device & CSIO_HW_CHIP_MASK))) |
950 | return -ENODEV; |
951 | |
952 | rv = csio_pci_init(pdev, bars: &bars); |
953 | if (rv) |
954 | goto err; |
955 | |
956 | hw = csio_hw_alloc(pdev); |
957 | if (!hw) { |
958 | rv = -ENODEV; |
959 | goto err_pci_exit; |
960 | } |
961 | |
962 | if (!pcie_relaxed_ordering_enabled(dev: pdev)) |
963 | hw->flags |= CSIO_HWF_ROOT_NO_RELAXED_ORDERING; |
964 | |
965 | pci_set_drvdata(pdev, data: hw); |
966 | |
967 | rv = csio_hw_start(hw); |
968 | if (rv) { |
969 | if (rv == -EINVAL) { |
970 | dev_err(&pdev->dev, |
971 | "Failed to start FW, continuing in debug mode.\n" ); |
972 | return 0; |
973 | } |
974 | goto err_lnode_exit; |
975 | } |
976 | |
977 | sprintf(buf: hw->fwrev_str, fmt: "%u.%u.%u.%u\n" , |
978 | FW_HDR_FW_VER_MAJOR_G(hw->fwrev), |
979 | FW_HDR_FW_VER_MINOR_G(hw->fwrev), |
980 | FW_HDR_FW_VER_MICRO_G(hw->fwrev), |
981 | FW_HDR_FW_VER_BUILD_G(hw->fwrev)); |
982 | |
983 | for (i = 0; i < hw->num_pports; i++) { |
984 | ln = csio_shost_init(hw, dev: &pdev->dev, probe: true, NULL); |
985 | if (!ln) { |
986 | rv = -ENODEV; |
987 | break; |
988 | } |
989 | /* Initialize portid */ |
990 | ln->portid = hw->pport[i].portid; |
991 | |
992 | spin_lock_irq(lock: &hw->lock); |
993 | if (csio_lnode_start(ln) != 0) |
994 | rv = -ENODEV; |
995 | spin_unlock_irq(lock: &hw->lock); |
996 | |
997 | if (rv) |
998 | break; |
999 | |
1000 | csio_lnode_init_post(ln); |
1001 | } |
1002 | |
1003 | if (rv) |
1004 | goto err_lnode_exit; |
1005 | |
1006 | return 0; |
1007 | |
1008 | err_lnode_exit: |
1009 | csio_lnodes_block_request(hw); |
1010 | spin_lock_irq(lock: &hw->lock); |
1011 | csio_hw_stop(hw); |
1012 | spin_unlock_irq(lock: &hw->lock); |
1013 | csio_lnodes_unblock_request(hw); |
1014 | csio_lnodes_exit(hw, npiv: 0); |
1015 | csio_hw_free(hw); |
1016 | err_pci_exit: |
1017 | csio_pci_exit(pdev, bars: &bars); |
1018 | err: |
1019 | dev_err(&pdev->dev, "probe of device failed: %d\n" , rv); |
1020 | return rv; |
1021 | } |
1022 | |
1023 | /* |
1024 | * csio_remove_one - Remove one instance of the driver at this PCI function. |
1025 | * @pdev: PCI device |
1026 | * |
1027 | * Used during hotplug operation. |
1028 | */ |
1029 | static void csio_remove_one(struct pci_dev *pdev) |
1030 | { |
1031 | struct csio_hw *hw = pci_get_drvdata(pdev); |
1032 | int bars = pci_select_bars(dev: pdev, IORESOURCE_MEM); |
1033 | |
1034 | csio_lnodes_block_request(hw); |
1035 | spin_lock_irq(lock: &hw->lock); |
1036 | |
1037 | /* Stops lnode, Rnode s/m |
1038 | * Quiesce IOs. |
1039 | * All sessions with remote ports are unregistered. |
1040 | */ |
1041 | csio_hw_stop(hw); |
1042 | spin_unlock_irq(lock: &hw->lock); |
1043 | csio_lnodes_unblock_request(hw); |
1044 | |
1045 | csio_lnodes_exit(hw, npiv: 0); |
1046 | csio_hw_free(hw); |
1047 | csio_pci_exit(pdev, bars: &bars); |
1048 | } |
1049 | |
1050 | /* |
1051 | * csio_pci_error_detected - PCI error was detected |
1052 | * @pdev: PCI device |
1053 | * |
1054 | */ |
1055 | static pci_ers_result_t |
1056 | csio_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state) |
1057 | { |
1058 | struct csio_hw *hw = pci_get_drvdata(pdev); |
1059 | |
1060 | csio_lnodes_block_request(hw); |
1061 | spin_lock_irq(lock: &hw->lock); |
1062 | |
1063 | /* Post PCI error detected evt to HW s/m |
1064 | * HW s/m handles this evt by quiescing IOs, unregisters rports |
1065 | * and finally takes the device to offline. |
1066 | */ |
1067 | csio_post_event(smp: &hw->sm, evt: CSIO_HWE_PCIERR_DETECTED); |
1068 | spin_unlock_irq(lock: &hw->lock); |
1069 | csio_lnodes_unblock_request(hw); |
1070 | csio_lnodes_exit(hw, npiv: 0); |
1071 | csio_intr_disable(hw, true); |
1072 | pci_disable_device(dev: pdev); |
1073 | return state == pci_channel_io_perm_failure ? |
1074 | PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_NEED_RESET; |
1075 | } |
1076 | |
1077 | /* |
1078 | * csio_pci_slot_reset - PCI slot has been reset. |
1079 | * @pdev: PCI device |
1080 | * |
1081 | */ |
1082 | static pci_ers_result_t |
1083 | csio_pci_slot_reset(struct pci_dev *pdev) |
1084 | { |
1085 | struct csio_hw *hw = pci_get_drvdata(pdev); |
1086 | int ready; |
1087 | |
1088 | if (pci_enable_device(dev: pdev)) { |
1089 | dev_err(&pdev->dev, "cannot re-enable device in slot reset\n" ); |
1090 | return PCI_ERS_RESULT_DISCONNECT; |
1091 | } |
1092 | |
1093 | pci_set_master(dev: pdev); |
1094 | pci_restore_state(dev: pdev); |
1095 | pci_save_state(dev: pdev); |
1096 | |
1097 | /* Bring HW s/m to ready state. |
1098 | * but don't resume IOs. |
1099 | */ |
1100 | spin_lock_irq(lock: &hw->lock); |
1101 | csio_post_event(smp: &hw->sm, evt: CSIO_HWE_PCIERR_SLOT_RESET); |
1102 | ready = csio_is_hw_ready(hw); |
1103 | spin_unlock_irq(lock: &hw->lock); |
1104 | |
1105 | if (ready) { |
1106 | return PCI_ERS_RESULT_RECOVERED; |
1107 | } else { |
1108 | dev_err(&pdev->dev, "Can't initialize HW when in slot reset\n" ); |
1109 | return PCI_ERS_RESULT_DISCONNECT; |
1110 | } |
1111 | } |
1112 | |
1113 | /* |
1114 | * csio_pci_resume - Resume normal operations |
1115 | * @pdev: PCI device |
1116 | * |
1117 | */ |
1118 | static void |
1119 | csio_pci_resume(struct pci_dev *pdev) |
1120 | { |
1121 | struct csio_hw *hw = pci_get_drvdata(pdev); |
1122 | struct csio_lnode *ln; |
1123 | int rv = 0; |
1124 | int i; |
1125 | |
1126 | /* Bring the LINK UP and Resume IO */ |
1127 | |
1128 | for (i = 0; i < hw->num_pports; i++) { |
1129 | ln = csio_shost_init(hw, dev: &pdev->dev, probe: true, NULL); |
1130 | if (!ln) { |
1131 | rv = -ENODEV; |
1132 | break; |
1133 | } |
1134 | /* Initialize portid */ |
1135 | ln->portid = hw->pport[i].portid; |
1136 | |
1137 | spin_lock_irq(lock: &hw->lock); |
1138 | if (csio_lnode_start(ln) != 0) |
1139 | rv = -ENODEV; |
1140 | spin_unlock_irq(lock: &hw->lock); |
1141 | |
1142 | if (rv) |
1143 | break; |
1144 | |
1145 | csio_lnode_init_post(ln); |
1146 | } |
1147 | |
1148 | if (rv) |
1149 | goto err_resume_exit; |
1150 | |
1151 | return; |
1152 | |
1153 | err_resume_exit: |
1154 | csio_lnodes_block_request(hw); |
1155 | spin_lock_irq(lock: &hw->lock); |
1156 | csio_hw_stop(hw); |
1157 | spin_unlock_irq(lock: &hw->lock); |
1158 | csio_lnodes_unblock_request(hw); |
1159 | csio_lnodes_exit(hw, npiv: 0); |
1160 | csio_hw_free(hw); |
1161 | dev_err(&pdev->dev, "resume of device failed: %d\n" , rv); |
1162 | } |
1163 | |
1164 | static struct pci_error_handlers csio_err_handler = { |
1165 | .error_detected = csio_pci_error_detected, |
1166 | .slot_reset = csio_pci_slot_reset, |
1167 | .resume = csio_pci_resume, |
1168 | }; |
1169 | |
1170 | /* |
1171 | * Macros needed to support the PCI Device ID Table ... |
1172 | */ |
1173 | #define CH_PCI_DEVICE_ID_TABLE_DEFINE_BEGIN \ |
1174 | static const struct pci_device_id csio_pci_tbl[] = { |
1175 | /* Define for FCoE uses PF6 */ |
1176 | #define CH_PCI_DEVICE_ID_FUNCTION 0x6 |
1177 | |
1178 | #define CH_PCI_ID_TABLE_ENTRY(devid) \ |
1179 | { PCI_VDEVICE(CHELSIO, (devid)), 0 } |
1180 | |
1181 | #define CH_PCI_DEVICE_ID_TABLE_DEFINE_END { 0, } } |
1182 | |
1183 | #include "t4_pci_id_tbl.h" |
1184 | |
1185 | static struct pci_driver csio_pci_driver = { |
1186 | .name = KBUILD_MODNAME, |
1187 | .driver = { |
1188 | .owner = THIS_MODULE, |
1189 | }, |
1190 | .id_table = csio_pci_tbl, |
1191 | .probe = csio_probe_one, |
1192 | .remove = csio_remove_one, |
1193 | .err_handler = &csio_err_handler, |
1194 | }; |
1195 | |
1196 | /* |
1197 | * csio_init - Chelsio storage driver initialization function. |
1198 | * |
1199 | */ |
1200 | static int __init |
1201 | csio_init(void) |
1202 | { |
1203 | int rv = -ENOMEM; |
1204 | |
1205 | pr_info("%s %s\n" , CSIO_DRV_DESC, CSIO_DRV_VERSION); |
1206 | |
1207 | csio_dfs_init(); |
1208 | |
1209 | csio_fcoe_transport = fc_attach_transport(&csio_fc_transport_funcs); |
1210 | if (!csio_fcoe_transport) |
1211 | goto err; |
1212 | |
1213 | csio_fcoe_transport_vport = |
1214 | fc_attach_transport(&csio_fc_transport_vport_funcs); |
1215 | if (!csio_fcoe_transport_vport) |
1216 | goto err_vport; |
1217 | |
1218 | rv = pci_register_driver(&csio_pci_driver); |
1219 | if (rv) |
1220 | goto err_pci; |
1221 | |
1222 | return 0; |
1223 | |
1224 | err_pci: |
1225 | fc_release_transport(csio_fcoe_transport_vport); |
1226 | err_vport: |
1227 | fc_release_transport(csio_fcoe_transport); |
1228 | err: |
1229 | csio_dfs_exit(); |
1230 | return rv; |
1231 | } |
1232 | |
1233 | /* |
1234 | * csio_exit - Chelsio storage driver uninitialization . |
1235 | * |
1236 | * Function that gets called in the unload path. |
1237 | */ |
1238 | static void __exit |
1239 | csio_exit(void) |
1240 | { |
1241 | pci_unregister_driver(dev: &csio_pci_driver); |
1242 | csio_dfs_exit(); |
1243 | fc_release_transport(csio_fcoe_transport_vport); |
1244 | fc_release_transport(csio_fcoe_transport); |
1245 | } |
1246 | |
1247 | module_init(csio_init); |
1248 | module_exit(csio_exit); |
1249 | MODULE_AUTHOR(CSIO_DRV_AUTHOR); |
1250 | MODULE_DESCRIPTION(CSIO_DRV_DESC); |
1251 | MODULE_LICENSE("Dual BSD/GPL" ); |
1252 | MODULE_DEVICE_TABLE(pci, csio_pci_tbl); |
1253 | MODULE_VERSION(CSIO_DRV_VERSION); |
1254 | MODULE_FIRMWARE(FW_FNAME_T5); |
1255 | MODULE_FIRMWARE(FW_FNAME_T6); |
1256 | MODULE_SOFTDEP("pre: cxgb4" ); |
1257 | |