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a3667aae NKI |
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/aer.h> | |
42 | #include <linux/mm.h> | |
43 | #include <linux/notifier.h> | |
44 | #include <linux/kdebug.h> | |
45 | #include <linux/seq_file.h> | |
46 | #include <linux/debugfs.h> | |
47 | #include <linux/string.h> | |
48 | #include <linux/export.h> | |
49 | ||
50 | #include "csio_init.h" | |
51 | #include "csio_defs.h" | |
52 | ||
53 | #define CSIO_MIN_MEMPOOL_SZ 64 | |
54 | ||
55 | static struct dentry *csio_debugfs_root; | |
56 | ||
57 | static struct scsi_transport_template *csio_fcoe_transport; | |
58 | static struct scsi_transport_template *csio_fcoe_transport_vport; | |
59 | ||
60 | /* | |
61 | * debugfs support | |
62 | */ | |
63 | static int | |
64 | csio_mem_open(struct inode *inode, struct file *file) | |
65 | { | |
66 | file->private_data = inode->i_private; | |
67 | return 0; | |
68 | } | |
69 | ||
70 | static ssize_t | |
71 | csio_mem_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) | |
72 | { | |
73 | loff_t pos = *ppos; | |
496ad9aa | 74 | loff_t avail = file_inode(file)->i_size; |
a3667aae NKI |
75 | unsigned int mem = (uintptr_t)file->private_data & 3; |
76 | struct csio_hw *hw = file->private_data - mem; | |
77 | ||
78 | if (pos < 0) | |
79 | return -EINVAL; | |
80 | if (pos >= avail) | |
81 | return 0; | |
82 | if (count > avail - pos) | |
83 | count = avail - pos; | |
84 | ||
85 | while (count) { | |
86 | size_t len; | |
87 | int ret, ofst; | |
88 | __be32 data[16]; | |
89 | ||
90 | if (mem == MEM_MC) | |
91 | ret = csio_hw_mc_read(hw, pos, data, NULL); | |
92 | else | |
93 | ret = csio_hw_edc_read(hw, mem, pos, data, NULL); | |
94 | if (ret) | |
95 | return ret; | |
96 | ||
97 | ofst = pos % sizeof(data); | |
98 | len = min(count, sizeof(data) - ofst); | |
99 | if (copy_to_user(buf, (u8 *)data + ofst, len)) | |
100 | return -EFAULT; | |
101 | ||
102 | buf += len; | |
103 | pos += len; | |
104 | count -= len; | |
105 | } | |
106 | count = pos - *ppos; | |
107 | *ppos = pos; | |
108 | return count; | |
109 | } | |
110 | ||
111 | static const struct file_operations csio_mem_debugfs_fops = { | |
112 | .owner = THIS_MODULE, | |
113 | .open = csio_mem_open, | |
114 | .read = csio_mem_read, | |
115 | .llseek = default_llseek, | |
116 | }; | |
117 | ||
6f039790 GKH |
118 | static void csio_add_debugfs_mem(struct csio_hw *hw, const char *name, |
119 | unsigned int idx, unsigned int size_mb) | |
a3667aae NKI |
120 | { |
121 | struct dentry *de; | |
122 | ||
123 | de = debugfs_create_file(name, S_IRUSR, hw->debugfs_root, | |
124 | (void *)hw + idx, &csio_mem_debugfs_fops); | |
125 | if (de && de->d_inode) | |
126 | de->d_inode->i_size = size_mb << 20; | |
127 | } | |
128 | ||
6f039790 | 129 | static int csio_setup_debugfs(struct csio_hw *hw) |
a3667aae NKI |
130 | { |
131 | int i; | |
132 | ||
133 | if (IS_ERR_OR_NULL(hw->debugfs_root)) | |
134 | return -1; | |
135 | ||
136 | i = csio_rd_reg32(hw, MA_TARGET_MEM_ENABLE); | |
137 | if (i & EDRAM0_ENABLE) | |
138 | csio_add_debugfs_mem(hw, "edc0", MEM_EDC0, 5); | |
139 | if (i & EDRAM1_ENABLE) | |
140 | csio_add_debugfs_mem(hw, "edc1", MEM_EDC1, 5); | |
141 | if (i & EXT_MEM_ENABLE) | |
142 | csio_add_debugfs_mem(hw, "mc", MEM_MC, | |
143 | EXT_MEM_SIZE_GET(csio_rd_reg32(hw, MA_EXT_MEMORY_BAR))); | |
144 | return 0; | |
145 | } | |
146 | ||
147 | /* | |
148 | * csio_dfs_create - Creates and sets up per-hw debugfs. | |
149 | * | |
150 | */ | |
151 | static int | |
152 | csio_dfs_create(struct csio_hw *hw) | |
153 | { | |
154 | if (csio_debugfs_root) { | |
155 | hw->debugfs_root = debugfs_create_dir(pci_name(hw->pdev), | |
156 | csio_debugfs_root); | |
157 | csio_setup_debugfs(hw); | |
158 | } | |
159 | ||
160 | return 0; | |
161 | } | |
162 | ||
163 | /* | |
164 | * csio_dfs_destroy - Destroys per-hw debugfs. | |
165 | */ | |
166 | static int | |
167 | csio_dfs_destroy(struct csio_hw *hw) | |
168 | { | |
169 | if (hw->debugfs_root) | |
170 | debugfs_remove_recursive(hw->debugfs_root); | |
171 | ||
172 | return 0; | |
173 | } | |
174 | ||
175 | /* | |
176 | * csio_dfs_init - Debug filesystem initialization for the module. | |
177 | * | |
178 | */ | |
179 | static int | |
180 | csio_dfs_init(void) | |
181 | { | |
182 | csio_debugfs_root = debugfs_create_dir(KBUILD_MODNAME, NULL); | |
183 | if (!csio_debugfs_root) | |
184 | pr_warn("Could not create debugfs entry, continuing\n"); | |
185 | ||
186 | return 0; | |
187 | } | |
188 | ||
189 | /* | |
190 | * csio_dfs_exit - debugfs cleanup for the module. | |
191 | */ | |
192 | static void | |
193 | csio_dfs_exit(void) | |
194 | { | |
195 | debugfs_remove(csio_debugfs_root); | |
196 | } | |
197 | ||
198 | /* | |
199 | * csio_pci_init - PCI initialization. | |
200 | * @pdev: PCI device. | |
201 | * @bars: Bitmask of bars to be requested. | |
202 | * | |
203 | * Initializes the PCI function by enabling MMIO, setting bus | |
204 | * mastership and setting DMA mask. | |
205 | */ | |
206 | static int | |
207 | csio_pci_init(struct pci_dev *pdev, int *bars) | |
208 | { | |
209 | int rv = -ENODEV; | |
210 | ||
211 | *bars = pci_select_bars(pdev, IORESOURCE_MEM); | |
212 | ||
213 | if (pci_enable_device_mem(pdev)) | |
214 | goto err; | |
215 | ||
216 | if (pci_request_selected_regions(pdev, *bars, KBUILD_MODNAME)) | |
217 | goto err_disable_device; | |
218 | ||
219 | pci_set_master(pdev); | |
220 | pci_try_set_mwi(pdev); | |
221 | ||
222 | if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) { | |
223 | pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); | |
224 | } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) { | |
225 | pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); | |
226 | } else { | |
227 | dev_err(&pdev->dev, "No suitable DMA available.\n"); | |
228 | goto err_release_regions; | |
229 | } | |
230 | ||
231 | return 0; | |
232 | ||
233 | err_release_regions: | |
234 | pci_release_selected_regions(pdev, *bars); | |
235 | err_disable_device: | |
236 | pci_disable_device(pdev); | |
237 | err: | |
238 | return rv; | |
239 | ||
240 | } | |
241 | ||
242 | /* | |
243 | * csio_pci_exit - PCI unitialization. | |
244 | * @pdev: PCI device. | |
245 | * @bars: Bars to be released. | |
246 | * | |
247 | */ | |
248 | static void | |
249 | csio_pci_exit(struct pci_dev *pdev, int *bars) | |
250 | { | |
251 | pci_release_selected_regions(pdev, *bars); | |
252 | pci_disable_device(pdev); | |
253 | } | |
254 | ||
255 | /* | |
256 | * csio_hw_init_workers - Initialize the HW module's worker threads. | |
257 | * @hw: HW module. | |
258 | * | |
259 | */ | |
260 | static void | |
261 | csio_hw_init_workers(struct csio_hw *hw) | |
262 | { | |
263 | INIT_WORK(&hw->evtq_work, csio_evtq_worker); | |
264 | } | |
265 | ||
266 | static void | |
267 | csio_hw_exit_workers(struct csio_hw *hw) | |
268 | { | |
269 | cancel_work_sync(&hw->evtq_work); | |
270 | flush_scheduled_work(); | |
271 | } | |
272 | ||
273 | static int | |
274 | csio_create_queues(struct csio_hw *hw) | |
275 | { | |
276 | int i, j; | |
277 | struct csio_mgmtm *mgmtm = csio_hw_to_mgmtm(hw); | |
278 | int rv; | |
279 | struct csio_scsi_cpu_info *info; | |
280 | ||
281 | if (hw->flags & CSIO_HWF_Q_FW_ALLOCED) | |
282 | return 0; | |
283 | ||
284 | if (hw->intr_mode != CSIO_IM_MSIX) { | |
285 | rv = csio_wr_iq_create(hw, NULL, hw->intr_iq_idx, | |
286 | 0, hw->pport[0].portid, false, NULL); | |
287 | if (rv != 0) { | |
288 | csio_err(hw, " Forward Interrupt IQ failed!: %d\n", rv); | |
289 | return rv; | |
290 | } | |
291 | } | |
292 | ||
293 | /* FW event queue */ | |
294 | rv = csio_wr_iq_create(hw, NULL, hw->fwevt_iq_idx, | |
295 | csio_get_fwevt_intr_idx(hw), | |
296 | hw->pport[0].portid, true, NULL); | |
297 | if (rv != 0) { | |
298 | csio_err(hw, "FW event IQ config failed!: %d\n", rv); | |
299 | return rv; | |
300 | } | |
301 | ||
302 | /* Create mgmt queue */ | |
303 | rv = csio_wr_eq_create(hw, NULL, mgmtm->eq_idx, | |
304 | mgmtm->iq_idx, hw->pport[0].portid, NULL); | |
305 | ||
306 | if (rv != 0) { | |
307 | csio_err(hw, "Mgmt EQ create failed!: %d\n", rv); | |
308 | goto err; | |
309 | } | |
310 | ||
311 | /* Create SCSI queues */ | |
312 | for (i = 0; i < hw->num_pports; i++) { | |
313 | info = &hw->scsi_cpu_info[i]; | |
314 | ||
315 | for (j = 0; j < info->max_cpus; j++) { | |
316 | struct csio_scsi_qset *sqset = &hw->sqset[i][j]; | |
317 | ||
318 | rv = csio_wr_iq_create(hw, NULL, sqset->iq_idx, | |
319 | sqset->intr_idx, i, false, NULL); | |
320 | if (rv != 0) { | |
321 | csio_err(hw, | |
322 | "SCSI module IQ config failed [%d][%d]:%d\n", | |
323 | i, j, rv); | |
324 | goto err; | |
325 | } | |
326 | rv = csio_wr_eq_create(hw, NULL, sqset->eq_idx, | |
327 | sqset->iq_idx, i, NULL); | |
328 | if (rv != 0) { | |
329 | csio_err(hw, | |
330 | "SCSI module EQ config failed [%d][%d]:%d\n", | |
331 | i, j, rv); | |
332 | goto err; | |
333 | } | |
334 | } /* for all CPUs */ | |
335 | } /* For all ports */ | |
336 | ||
337 | hw->flags |= CSIO_HWF_Q_FW_ALLOCED; | |
338 | return 0; | |
339 | err: | |
340 | csio_wr_destroy_queues(hw, true); | |
341 | return -EINVAL; | |
342 | } | |
343 | ||
344 | /* | |
345 | * csio_config_queues - Configure the DMA queues. | |
346 | * @hw: HW module. | |
347 | * | |
348 | * Allocates memory for queues are registers them with FW. | |
349 | */ | |
350 | int | |
351 | csio_config_queues(struct csio_hw *hw) | |
352 | { | |
353 | int i, j, idx, k = 0; | |
354 | int rv; | |
355 | struct csio_scsi_qset *sqset; | |
356 | struct csio_mgmtm *mgmtm = csio_hw_to_mgmtm(hw); | |
357 | struct csio_scsi_qset *orig; | |
358 | struct csio_scsi_cpu_info *info; | |
359 | ||
360 | if (hw->flags & CSIO_HWF_Q_MEM_ALLOCED) | |
361 | return csio_create_queues(hw); | |
362 | ||
363 | /* Calculate number of SCSI queues for MSIX we would like */ | |
364 | hw->num_scsi_msix_cpus = num_online_cpus(); | |
365 | hw->num_sqsets = num_online_cpus() * hw->num_pports; | |
366 | ||
367 | if (hw->num_sqsets > CSIO_MAX_SCSI_QSETS) { | |
368 | hw->num_sqsets = CSIO_MAX_SCSI_QSETS; | |
369 | hw->num_scsi_msix_cpus = CSIO_MAX_SCSI_CPU; | |
370 | } | |
371 | ||
372 | /* Initialize max_cpus, may get reduced during msix allocations */ | |
373 | for (i = 0; i < hw->num_pports; i++) | |
374 | hw->scsi_cpu_info[i].max_cpus = hw->num_scsi_msix_cpus; | |
375 | ||
376 | csio_dbg(hw, "nsqsets:%d scpus:%d\n", | |
377 | hw->num_sqsets, hw->num_scsi_msix_cpus); | |
378 | ||
379 | csio_intr_enable(hw); | |
380 | ||
381 | if (hw->intr_mode != CSIO_IM_MSIX) { | |
382 | ||
383 | /* Allocate Forward interrupt iq. */ | |
384 | hw->intr_iq_idx = csio_wr_alloc_q(hw, CSIO_INTR_IQSIZE, | |
385 | CSIO_INTR_WRSIZE, CSIO_INGRESS, | |
386 | (void *)hw, 0, 0, NULL); | |
387 | if (hw->intr_iq_idx == -1) { | |
388 | csio_err(hw, | |
389 | "Forward interrupt queue creation failed\n"); | |
390 | goto intr_disable; | |
391 | } | |
392 | } | |
393 | ||
394 | /* Allocate the FW evt queue */ | |
395 | hw->fwevt_iq_idx = csio_wr_alloc_q(hw, CSIO_FWEVT_IQSIZE, | |
396 | CSIO_FWEVT_WRSIZE, | |
397 | CSIO_INGRESS, (void *)hw, | |
398 | CSIO_FWEVT_FLBUFS, 0, | |
399 | csio_fwevt_intx_handler); | |
400 | if (hw->fwevt_iq_idx == -1) { | |
401 | csio_err(hw, "FW evt queue creation failed\n"); | |
402 | goto intr_disable; | |
403 | } | |
404 | ||
405 | /* Allocate the mgmt queue */ | |
406 | mgmtm->eq_idx = csio_wr_alloc_q(hw, CSIO_MGMT_EQSIZE, | |
407 | CSIO_MGMT_EQ_WRSIZE, | |
408 | CSIO_EGRESS, (void *)hw, 0, 0, NULL); | |
409 | if (mgmtm->eq_idx == -1) { | |
410 | csio_err(hw, "Failed to alloc egress queue for mgmt module\n"); | |
411 | goto intr_disable; | |
412 | } | |
413 | ||
414 | /* Use FW IQ for MGMT req completion */ | |
415 | mgmtm->iq_idx = hw->fwevt_iq_idx; | |
416 | ||
417 | /* Allocate SCSI queues */ | |
418 | for (i = 0; i < hw->num_pports; i++) { | |
419 | info = &hw->scsi_cpu_info[i]; | |
420 | ||
421 | for (j = 0; j < hw->num_scsi_msix_cpus; j++) { | |
422 | sqset = &hw->sqset[i][j]; | |
423 | ||
424 | if (j >= info->max_cpus) { | |
425 | k = j % info->max_cpus; | |
426 | orig = &hw->sqset[i][k]; | |
427 | sqset->eq_idx = orig->eq_idx; | |
428 | sqset->iq_idx = orig->iq_idx; | |
429 | continue; | |
430 | } | |
431 | ||
432 | idx = csio_wr_alloc_q(hw, csio_scsi_eqsize, 0, | |
433 | CSIO_EGRESS, (void *)hw, 0, 0, | |
434 | NULL); | |
435 | if (idx == -1) { | |
436 | csio_err(hw, "EQ creation failed for idx:%d\n", | |
437 | idx); | |
438 | goto intr_disable; | |
439 | } | |
440 | ||
441 | sqset->eq_idx = idx; | |
442 | ||
443 | idx = csio_wr_alloc_q(hw, CSIO_SCSI_IQSIZE, | |
444 | CSIO_SCSI_IQ_WRSZ, CSIO_INGRESS, | |
445 | (void *)hw, 0, 0, | |
446 | csio_scsi_intx_handler); | |
447 | if (idx == -1) { | |
448 | csio_err(hw, "IQ creation failed for idx:%d\n", | |
449 | idx); | |
450 | goto intr_disable; | |
451 | } | |
452 | sqset->iq_idx = idx; | |
453 | } /* for all CPUs */ | |
454 | } /* For all ports */ | |
455 | ||
456 | hw->flags |= CSIO_HWF_Q_MEM_ALLOCED; | |
457 | ||
458 | rv = csio_create_queues(hw); | |
459 | if (rv != 0) | |
460 | goto intr_disable; | |
461 | ||
462 | /* | |
463 | * Now request IRQs for the vectors. In the event of a failure, | |
464 | * cleanup is handled internally by this function. | |
465 | */ | |
466 | rv = csio_request_irqs(hw); | |
467 | if (rv != 0) | |
468 | return -EINVAL; | |
469 | ||
470 | return 0; | |
471 | ||
472 | intr_disable: | |
473 | csio_intr_disable(hw, false); | |
474 | ||
475 | return -EINVAL; | |
476 | } | |
477 | ||
478 | static int | |
479 | csio_resource_alloc(struct csio_hw *hw) | |
480 | { | |
481 | struct csio_wrm *wrm = csio_hw_to_wrm(hw); | |
482 | int rv = -ENOMEM; | |
483 | ||
484 | wrm->num_q = ((CSIO_MAX_SCSI_QSETS * 2) + CSIO_HW_NIQ + | |
485 | CSIO_HW_NEQ + CSIO_HW_NFLQ + CSIO_HW_NINTXQ); | |
486 | ||
487 | hw->mb_mempool = mempool_create_kmalloc_pool(CSIO_MIN_MEMPOOL_SZ, | |
488 | sizeof(struct csio_mb)); | |
489 | if (!hw->mb_mempool) | |
490 | goto err; | |
491 | ||
492 | hw->rnode_mempool = mempool_create_kmalloc_pool(CSIO_MIN_MEMPOOL_SZ, | |
493 | sizeof(struct csio_rnode)); | |
494 | if (!hw->rnode_mempool) | |
495 | goto err_free_mb_mempool; | |
496 | ||
497 | hw->scsi_pci_pool = pci_pool_create("csio_scsi_pci_pool", hw->pdev, | |
498 | CSIO_SCSI_RSP_LEN, 8, 0); | |
499 | if (!hw->scsi_pci_pool) | |
500 | goto err_free_rn_pool; | |
501 | ||
502 | return 0; | |
503 | ||
504 | err_free_rn_pool: | |
505 | mempool_destroy(hw->rnode_mempool); | |
506 | hw->rnode_mempool = NULL; | |
507 | err_free_mb_mempool: | |
508 | mempool_destroy(hw->mb_mempool); | |
509 | hw->mb_mempool = NULL; | |
510 | err: | |
511 | return rv; | |
512 | } | |
513 | ||
514 | static void | |
515 | csio_resource_free(struct csio_hw *hw) | |
516 | { | |
517 | pci_pool_destroy(hw->scsi_pci_pool); | |
518 | hw->scsi_pci_pool = NULL; | |
519 | mempool_destroy(hw->rnode_mempool); | |
520 | hw->rnode_mempool = NULL; | |
521 | mempool_destroy(hw->mb_mempool); | |
522 | hw->mb_mempool = NULL; | |
523 | } | |
524 | ||
525 | /* | |
526 | * csio_hw_alloc - Allocate and initialize the HW module. | |
527 | * @pdev: PCI device. | |
528 | * | |
529 | * Allocates HW structure, DMA, memory resources, maps BARS to | |
530 | * host memory and initializes HW module. | |
531 | */ | |
6f039790 | 532 | static struct csio_hw *csio_hw_alloc(struct pci_dev *pdev) |
a3667aae NKI |
533 | { |
534 | struct csio_hw *hw; | |
535 | ||
536 | hw = kzalloc(sizeof(struct csio_hw), GFP_KERNEL); | |
537 | if (!hw) | |
538 | goto err; | |
539 | ||
540 | hw->pdev = pdev; | |
541 | strncpy(hw->drv_version, CSIO_DRV_VERSION, 32); | |
542 | ||
543 | /* memory pool/DMA pool allocation */ | |
544 | if (csio_resource_alloc(hw)) | |
545 | goto err_free_hw; | |
546 | ||
547 | /* Get the start address of registers from BAR 0 */ | |
548 | hw->regstart = ioremap_nocache(pci_resource_start(pdev, 0), | |
549 | pci_resource_len(pdev, 0)); | |
550 | if (!hw->regstart) { | |
551 | csio_err(hw, "Could not map BAR 0, regstart = %p\n", | |
552 | hw->regstart); | |
553 | goto err_resource_free; | |
554 | } | |
555 | ||
556 | csio_hw_init_workers(hw); | |
557 | ||
558 | if (csio_hw_init(hw)) | |
559 | goto err_unmap_bar; | |
560 | ||
561 | csio_dfs_create(hw); | |
562 | ||
563 | csio_dbg(hw, "hw:%p\n", hw); | |
564 | ||
565 | return hw; | |
566 | ||
567 | err_unmap_bar: | |
568 | csio_hw_exit_workers(hw); | |
569 | iounmap(hw->regstart); | |
570 | err_resource_free: | |
571 | csio_resource_free(hw); | |
572 | err_free_hw: | |
573 | kfree(hw); | |
574 | err: | |
575 | return NULL; | |
576 | } | |
577 | ||
578 | /* | |
579 | * csio_hw_free - Uninitialize and free the HW module. | |
580 | * @hw: The HW module | |
581 | * | |
582 | * Disable interrupts, uninit the HW module, free resources, free hw. | |
583 | */ | |
584 | static void | |
585 | csio_hw_free(struct csio_hw *hw) | |
586 | { | |
587 | csio_intr_disable(hw, true); | |
588 | csio_hw_exit_workers(hw); | |
589 | csio_hw_exit(hw); | |
590 | iounmap(hw->regstart); | |
591 | csio_dfs_destroy(hw); | |
592 | csio_resource_free(hw); | |
593 | kfree(hw); | |
594 | } | |
595 | ||
596 | /** | |
597 | * csio_shost_init - Create and initialize the lnode module. | |
598 | * @hw: The HW module. | |
599 | * @dev: The device associated with this invocation. | |
600 | * @probe: Called from probe context or not? | |
601 | * @os_pln: Parent lnode if any. | |
602 | * | |
603 | * Allocates lnode structure via scsi_host_alloc, initializes | |
604 | * shost, initializes lnode module and registers with SCSI ML | |
605 | * via scsi_host_add. This function is shared between physical and | |
606 | * virtual node ports. | |
607 | */ | |
608 | struct csio_lnode * | |
609 | csio_shost_init(struct csio_hw *hw, struct device *dev, | |
610 | bool probe, struct csio_lnode *pln) | |
611 | { | |
612 | struct Scsi_Host *shost = NULL; | |
613 | struct csio_lnode *ln; | |
614 | ||
615 | csio_fcoe_shost_template.cmd_per_lun = csio_lun_qdepth; | |
616 | csio_fcoe_shost_vport_template.cmd_per_lun = csio_lun_qdepth; | |
617 | ||
618 | /* | |
619 | * hw->pdev is the physical port's PCI dev structure, | |
620 | * which will be different from the NPIV dev structure. | |
621 | */ | |
622 | if (dev == &hw->pdev->dev) | |
623 | shost = scsi_host_alloc( | |
624 | &csio_fcoe_shost_template, | |
625 | sizeof(struct csio_lnode)); | |
626 | else | |
627 | shost = scsi_host_alloc( | |
628 | &csio_fcoe_shost_vport_template, | |
629 | sizeof(struct csio_lnode)); | |
630 | ||
631 | if (!shost) | |
632 | goto err; | |
633 | ||
634 | ln = shost_priv(shost); | |
635 | memset(ln, 0, sizeof(struct csio_lnode)); | |
636 | ||
637 | /* Link common lnode to this lnode */ | |
638 | ln->dev_num = (shost->host_no << 16); | |
639 | ||
640 | shost->can_queue = CSIO_MAX_QUEUE; | |
641 | shost->this_id = -1; | |
642 | shost->unique_id = shost->host_no; | |
643 | shost->max_cmd_len = 16; /* Max CDB length supported */ | |
644 | shost->max_id = min_t(uint32_t, csio_fcoe_rnodes, | |
645 | hw->fres_info.max_ssns); | |
646 | shost->max_lun = CSIO_MAX_LUN; | |
647 | if (dev == &hw->pdev->dev) | |
648 | shost->transportt = csio_fcoe_transport; | |
649 | else | |
650 | shost->transportt = csio_fcoe_transport_vport; | |
651 | ||
652 | /* root lnode */ | |
653 | if (!hw->rln) | |
654 | hw->rln = ln; | |
655 | ||
656 | /* Other initialization here: Common, Transport specific */ | |
657 | if (csio_lnode_init(ln, hw, pln)) | |
658 | goto err_shost_put; | |
659 | ||
660 | if (scsi_add_host(shost, dev)) | |
661 | goto err_lnode_exit; | |
662 | ||
663 | return ln; | |
664 | ||
665 | err_lnode_exit: | |
666 | csio_lnode_exit(ln); | |
667 | err_shost_put: | |
668 | scsi_host_put(shost); | |
669 | err: | |
670 | return NULL; | |
671 | } | |
672 | ||
673 | /** | |
674 | * csio_shost_exit - De-instantiate the shost. | |
675 | * @ln: The lnode module corresponding to the shost. | |
676 | * | |
677 | */ | |
678 | void | |
679 | csio_shost_exit(struct csio_lnode *ln) | |
680 | { | |
681 | struct Scsi_Host *shost = csio_ln_to_shost(ln); | |
682 | struct csio_hw *hw = csio_lnode_to_hw(ln); | |
683 | ||
684 | /* Inform transport */ | |
685 | fc_remove_host(shost); | |
686 | ||
687 | /* Inform SCSI ML */ | |
688 | scsi_remove_host(shost); | |
689 | ||
690 | /* Flush all the events, so that any rnode removal events | |
691 | * already queued are all handled, before we remove the lnode. | |
692 | */ | |
693 | spin_lock_irq(&hw->lock); | |
694 | csio_evtq_flush(hw); | |
695 | spin_unlock_irq(&hw->lock); | |
696 | ||
697 | csio_lnode_exit(ln); | |
698 | scsi_host_put(shost); | |
699 | } | |
700 | ||
701 | struct csio_lnode * | |
702 | csio_lnode_alloc(struct csio_hw *hw) | |
703 | { | |
704 | return csio_shost_init(hw, &hw->pdev->dev, false, NULL); | |
705 | } | |
706 | ||
707 | void | |
708 | csio_lnodes_block_request(struct csio_hw *hw) | |
709 | { | |
710 | struct Scsi_Host *shost; | |
711 | struct csio_lnode *sln; | |
712 | struct csio_lnode *ln; | |
713 | struct list_head *cur_ln, *cur_cln; | |
714 | struct csio_lnode **lnode_list; | |
715 | int cur_cnt = 0, ii; | |
716 | ||
717 | lnode_list = kzalloc((sizeof(struct csio_lnode *) * hw->num_lns), | |
718 | GFP_KERNEL); | |
719 | if (!lnode_list) { | |
720 | csio_err(hw, "Failed to allocate lnodes_list"); | |
721 | return; | |
722 | } | |
723 | ||
724 | spin_lock_irq(&hw->lock); | |
725 | /* Traverse sibling lnodes */ | |
726 | list_for_each(cur_ln, &hw->sln_head) { | |
727 | sln = (struct csio_lnode *) cur_ln; | |
728 | lnode_list[cur_cnt++] = sln; | |
729 | ||
730 | /* Traverse children lnodes */ | |
731 | list_for_each(cur_cln, &sln->cln_head) | |
732 | lnode_list[cur_cnt++] = (struct csio_lnode *) cur_cln; | |
733 | } | |
734 | spin_unlock_irq(&hw->lock); | |
735 | ||
736 | for (ii = 0; ii < cur_cnt; ii++) { | |
737 | csio_dbg(hw, "Blocking IOs on lnode: %p\n", lnode_list[ii]); | |
738 | ln = lnode_list[ii]; | |
739 | shost = csio_ln_to_shost(ln); | |
740 | scsi_block_requests(shost); | |
741 | ||
742 | } | |
743 | kfree(lnode_list); | |
744 | } | |
745 | ||
746 | void | |
747 | csio_lnodes_unblock_request(struct csio_hw *hw) | |
748 | { | |
749 | struct csio_lnode *ln; | |
750 | struct Scsi_Host *shost; | |
751 | struct csio_lnode *sln; | |
752 | struct list_head *cur_ln, *cur_cln; | |
753 | struct csio_lnode **lnode_list; | |
754 | int cur_cnt = 0, ii; | |
755 | ||
756 | lnode_list = kzalloc((sizeof(struct csio_lnode *) * hw->num_lns), | |
757 | GFP_KERNEL); | |
758 | if (!lnode_list) { | |
759 | csio_err(hw, "Failed to allocate lnodes_list"); | |
760 | return; | |
761 | } | |
762 | ||
763 | spin_lock_irq(&hw->lock); | |
764 | /* Traverse sibling lnodes */ | |
765 | list_for_each(cur_ln, &hw->sln_head) { | |
766 | sln = (struct csio_lnode *) cur_ln; | |
767 | lnode_list[cur_cnt++] = sln; | |
768 | ||
769 | /* Traverse children lnodes */ | |
770 | list_for_each(cur_cln, &sln->cln_head) | |
771 | lnode_list[cur_cnt++] = (struct csio_lnode *) cur_cln; | |
772 | } | |
773 | spin_unlock_irq(&hw->lock); | |
774 | ||
775 | for (ii = 0; ii < cur_cnt; ii++) { | |
776 | csio_dbg(hw, "unblocking IOs on lnode: %p\n", lnode_list[ii]); | |
777 | ln = lnode_list[ii]; | |
778 | shost = csio_ln_to_shost(ln); | |
779 | scsi_unblock_requests(shost); | |
780 | } | |
781 | kfree(lnode_list); | |
782 | } | |
783 | ||
784 | void | |
785 | csio_lnodes_block_by_port(struct csio_hw *hw, uint8_t portid) | |
786 | { | |
787 | struct csio_lnode *ln; | |
788 | struct Scsi_Host *shost; | |
789 | struct csio_lnode *sln; | |
790 | struct list_head *cur_ln, *cur_cln; | |
791 | struct csio_lnode **lnode_list; | |
792 | int cur_cnt = 0, ii; | |
793 | ||
794 | lnode_list = kzalloc((sizeof(struct csio_lnode *) * hw->num_lns), | |
795 | GFP_KERNEL); | |
796 | if (!lnode_list) { | |
797 | csio_err(hw, "Failed to allocate lnodes_list"); | |
798 | return; | |
799 | } | |
800 | ||
801 | spin_lock_irq(&hw->lock); | |
802 | /* Traverse sibling lnodes */ | |
803 | list_for_each(cur_ln, &hw->sln_head) { | |
804 | sln = (struct csio_lnode *) cur_ln; | |
805 | if (sln->portid != portid) | |
806 | continue; | |
807 | ||
808 | lnode_list[cur_cnt++] = sln; | |
809 | ||
810 | /* Traverse children lnodes */ | |
811 | list_for_each(cur_cln, &sln->cln_head) | |
812 | lnode_list[cur_cnt++] = (struct csio_lnode *) cur_cln; | |
813 | } | |
814 | spin_unlock_irq(&hw->lock); | |
815 | ||
816 | for (ii = 0; ii < cur_cnt; ii++) { | |
817 | csio_dbg(hw, "Blocking IOs on lnode: %p\n", lnode_list[ii]); | |
818 | ln = lnode_list[ii]; | |
819 | shost = csio_ln_to_shost(ln); | |
820 | scsi_block_requests(shost); | |
821 | } | |
822 | kfree(lnode_list); | |
823 | } | |
824 | ||
825 | void | |
826 | csio_lnodes_unblock_by_port(struct csio_hw *hw, uint8_t portid) | |
827 | { | |
828 | struct csio_lnode *ln; | |
829 | struct Scsi_Host *shost; | |
830 | struct csio_lnode *sln; | |
831 | struct list_head *cur_ln, *cur_cln; | |
832 | struct csio_lnode **lnode_list; | |
833 | int cur_cnt = 0, ii; | |
834 | ||
835 | lnode_list = kzalloc((sizeof(struct csio_lnode *) * hw->num_lns), | |
836 | GFP_KERNEL); | |
837 | if (!lnode_list) { | |
838 | csio_err(hw, "Failed to allocate lnodes_list"); | |
839 | return; | |
840 | } | |
841 | ||
842 | spin_lock_irq(&hw->lock); | |
843 | /* Traverse sibling lnodes */ | |
844 | list_for_each(cur_ln, &hw->sln_head) { | |
845 | sln = (struct csio_lnode *) cur_ln; | |
846 | if (sln->portid != portid) | |
847 | continue; | |
848 | lnode_list[cur_cnt++] = sln; | |
849 | ||
850 | /* Traverse children lnodes */ | |
851 | list_for_each(cur_cln, &sln->cln_head) | |
852 | lnode_list[cur_cnt++] = (struct csio_lnode *) cur_cln; | |
853 | } | |
854 | spin_unlock_irq(&hw->lock); | |
855 | ||
856 | for (ii = 0; ii < cur_cnt; ii++) { | |
857 | csio_dbg(hw, "unblocking IOs on lnode: %p\n", lnode_list[ii]); | |
858 | ln = lnode_list[ii]; | |
859 | shost = csio_ln_to_shost(ln); | |
860 | scsi_unblock_requests(shost); | |
861 | } | |
862 | kfree(lnode_list); | |
863 | } | |
864 | ||
865 | void | |
866 | csio_lnodes_exit(struct csio_hw *hw, bool npiv) | |
867 | { | |
868 | struct csio_lnode *sln; | |
869 | struct csio_lnode *ln; | |
870 | struct list_head *cur_ln, *cur_cln; | |
871 | struct csio_lnode **lnode_list; | |
872 | int cur_cnt = 0, ii; | |
873 | ||
874 | lnode_list = kzalloc((sizeof(struct csio_lnode *) * hw->num_lns), | |
875 | GFP_KERNEL); | |
876 | if (!lnode_list) { | |
877 | csio_err(hw, "lnodes_exit: Failed to allocate lnodes_list.\n"); | |
878 | return; | |
879 | } | |
880 | ||
881 | /* Get all child lnodes(NPIV ports) */ | |
882 | spin_lock_irq(&hw->lock); | |
883 | list_for_each(cur_ln, &hw->sln_head) { | |
884 | sln = (struct csio_lnode *) cur_ln; | |
885 | ||
886 | /* Traverse children lnodes */ | |
887 | list_for_each(cur_cln, &sln->cln_head) | |
888 | lnode_list[cur_cnt++] = (struct csio_lnode *) cur_cln; | |
889 | } | |
890 | spin_unlock_irq(&hw->lock); | |
891 | ||
892 | /* Delete NPIV lnodes */ | |
893 | for (ii = 0; ii < cur_cnt; ii++) { | |
894 | csio_dbg(hw, "Deleting child lnode: %p\n", lnode_list[ii]); | |
895 | ln = lnode_list[ii]; | |
896 | fc_vport_terminate(ln->fc_vport); | |
897 | } | |
898 | ||
899 | /* Delete only npiv lnodes */ | |
900 | if (npiv) | |
901 | goto free_lnodes; | |
902 | ||
903 | cur_cnt = 0; | |
904 | /* Get all physical lnodes */ | |
905 | spin_lock_irq(&hw->lock); | |
906 | /* Traverse sibling lnodes */ | |
907 | list_for_each(cur_ln, &hw->sln_head) { | |
908 | sln = (struct csio_lnode *) cur_ln; | |
909 | lnode_list[cur_cnt++] = sln; | |
910 | } | |
911 | spin_unlock_irq(&hw->lock); | |
912 | ||
913 | /* Delete physical lnodes */ | |
914 | for (ii = 0; ii < cur_cnt; ii++) { | |
915 | csio_dbg(hw, "Deleting parent lnode: %p\n", lnode_list[ii]); | |
916 | csio_shost_exit(lnode_list[ii]); | |
917 | } | |
918 | ||
919 | free_lnodes: | |
920 | kfree(lnode_list); | |
921 | } | |
922 | ||
923 | /* | |
924 | * csio_lnode_init_post: Set lnode attributes after starting HW. | |
925 | * @ln: lnode. | |
926 | * | |
927 | */ | |
928 | static void | |
929 | csio_lnode_init_post(struct csio_lnode *ln) | |
930 | { | |
931 | struct Scsi_Host *shost = csio_ln_to_shost(ln); | |
932 | ||
933 | csio_fchost_attr_init(ln); | |
934 | ||
935 | scsi_scan_host(shost); | |
936 | } | |
937 | ||
938 | /* | |
939 | * csio_probe_one - Instantiate this function. | |
940 | * @pdev: PCI device | |
941 | * @id: Device ID | |
942 | * | |
943 | * This is the .probe() callback of the driver. This function: | |
944 | * - Initializes the PCI function by enabling MMIO, setting bus | |
945 | * mastership and setting DMA mask. | |
946 | * - Allocates HW structure, DMA, memory resources, maps BARS to | |
947 | * host memory and initializes HW module. | |
948 | * - Allocates lnode structure via scsi_host_alloc, initializes | |
949 | * shost, initialized lnode module and registers with SCSI ML | |
950 | * via scsi_host_add. | |
951 | * - Enables interrupts, and starts the chip by kicking off the | |
952 | * HW state machine. | |
953 | * - Once hardware is ready, initiated scan of the host via | |
954 | * scsi_scan_host. | |
955 | */ | |
6f039790 | 956 | static int csio_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) |
a3667aae NKI |
957 | { |
958 | int rv; | |
959 | int bars; | |
960 | int i; | |
961 | struct csio_hw *hw; | |
962 | struct csio_lnode *ln; | |
963 | ||
964 | rv = csio_pci_init(pdev, &bars); | |
965 | if (rv) | |
966 | goto err; | |
967 | ||
968 | hw = csio_hw_alloc(pdev); | |
969 | if (!hw) { | |
970 | rv = -ENODEV; | |
971 | goto err_pci_exit; | |
972 | } | |
973 | ||
974 | pci_set_drvdata(pdev, hw); | |
975 | ||
976 | if (csio_hw_start(hw) != 0) { | |
977 | dev_err(&pdev->dev, | |
978 | "Failed to start FW, continuing in debug mode.\n"); | |
979 | return 0; | |
980 | } | |
981 | ||
982 | sprintf(hw->fwrev_str, "%u.%u.%u.%u\n", | |
983 | FW_HDR_FW_VER_MAJOR_GET(hw->fwrev), | |
984 | FW_HDR_FW_VER_MINOR_GET(hw->fwrev), | |
985 | FW_HDR_FW_VER_MICRO_GET(hw->fwrev), | |
986 | FW_HDR_FW_VER_BUILD_GET(hw->fwrev)); | |
987 | ||
988 | for (i = 0; i < hw->num_pports; i++) { | |
989 | ln = csio_shost_init(hw, &pdev->dev, true, NULL); | |
990 | if (!ln) { | |
991 | rv = -ENODEV; | |
992 | break; | |
993 | } | |
994 | /* Initialize portid */ | |
995 | ln->portid = hw->pport[i].portid; | |
996 | ||
997 | spin_lock_irq(&hw->lock); | |
998 | if (csio_lnode_start(ln) != 0) | |
999 | rv = -ENODEV; | |
1000 | spin_unlock_irq(&hw->lock); | |
1001 | ||
1002 | if (rv) | |
1003 | break; | |
1004 | ||
1005 | csio_lnode_init_post(ln); | |
1006 | } | |
1007 | ||
1008 | if (rv) | |
1009 | goto err_lnode_exit; | |
1010 | ||
1011 | return 0; | |
1012 | ||
1013 | err_lnode_exit: | |
1014 | csio_lnodes_block_request(hw); | |
1015 | spin_lock_irq(&hw->lock); | |
1016 | csio_hw_stop(hw); | |
1017 | spin_unlock_irq(&hw->lock); | |
1018 | csio_lnodes_unblock_request(hw); | |
1019 | pci_set_drvdata(hw->pdev, NULL); | |
1020 | csio_lnodes_exit(hw, 0); | |
1021 | csio_hw_free(hw); | |
1022 | err_pci_exit: | |
1023 | csio_pci_exit(pdev, &bars); | |
1024 | err: | |
1025 | dev_err(&pdev->dev, "probe of device failed: %d\n", rv); | |
1026 | return rv; | |
1027 | } | |
1028 | ||
1029 | /* | |
1030 | * csio_remove_one - Remove one instance of the driver at this PCI function. | |
1031 | * @pdev: PCI device | |
1032 | * | |
1033 | * Used during hotplug operation. | |
1034 | */ | |
6f039790 | 1035 | static void csio_remove_one(struct pci_dev *pdev) |
a3667aae NKI |
1036 | { |
1037 | struct csio_hw *hw = pci_get_drvdata(pdev); | |
1038 | int bars = pci_select_bars(pdev, IORESOURCE_MEM); | |
1039 | ||
1040 | csio_lnodes_block_request(hw); | |
1041 | spin_lock_irq(&hw->lock); | |
1042 | ||
1043 | /* Stops lnode, Rnode s/m | |
1044 | * Quiesce IOs. | |
1045 | * All sessions with remote ports are unregistered. | |
1046 | */ | |
1047 | csio_hw_stop(hw); | |
1048 | spin_unlock_irq(&hw->lock); | |
1049 | csio_lnodes_unblock_request(hw); | |
1050 | ||
1051 | csio_lnodes_exit(hw, 0); | |
1052 | csio_hw_free(hw); | |
1053 | pci_set_drvdata(pdev, NULL); | |
1054 | csio_pci_exit(pdev, &bars); | |
1055 | } | |
1056 | ||
1057 | /* | |
1058 | * csio_pci_error_detected - PCI error was detected | |
1059 | * @pdev: PCI device | |
1060 | * | |
1061 | */ | |
1062 | static pci_ers_result_t | |
1063 | csio_pci_error_detected(struct pci_dev *pdev, pci_channel_state_t state) | |
1064 | { | |
1065 | struct csio_hw *hw = pci_get_drvdata(pdev); | |
1066 | ||
1067 | csio_lnodes_block_request(hw); | |
1068 | spin_lock_irq(&hw->lock); | |
1069 | ||
1070 | /* Post PCI error detected evt to HW s/m | |
1071 | * HW s/m handles this evt by quiescing IOs, unregisters rports | |
1072 | * and finally takes the device to offline. | |
1073 | */ | |
1074 | csio_post_event(&hw->sm, CSIO_HWE_PCIERR_DETECTED); | |
1075 | spin_unlock_irq(&hw->lock); | |
1076 | csio_lnodes_unblock_request(hw); | |
1077 | csio_lnodes_exit(hw, 0); | |
1078 | csio_intr_disable(hw, true); | |
1079 | pci_disable_device(pdev); | |
1080 | return state == pci_channel_io_perm_failure ? | |
1081 | PCI_ERS_RESULT_DISCONNECT : PCI_ERS_RESULT_NEED_RESET; | |
1082 | } | |
1083 | ||
1084 | /* | |
1085 | * csio_pci_slot_reset - PCI slot has been reset. | |
1086 | * @pdev: PCI device | |
1087 | * | |
1088 | */ | |
1089 | static pci_ers_result_t | |
1090 | csio_pci_slot_reset(struct pci_dev *pdev) | |
1091 | { | |
1092 | struct csio_hw *hw = pci_get_drvdata(pdev); | |
1093 | int ready; | |
1094 | ||
1095 | if (pci_enable_device(pdev)) { | |
1096 | dev_err(&pdev->dev, "cannot re-enable device in slot reset\n"); | |
1097 | return PCI_ERS_RESULT_DISCONNECT; | |
1098 | } | |
1099 | ||
1100 | pci_set_master(pdev); | |
1101 | pci_restore_state(pdev); | |
1102 | pci_save_state(pdev); | |
1103 | pci_cleanup_aer_uncorrect_error_status(pdev); | |
1104 | ||
1105 | /* Bring HW s/m to ready state. | |
1106 | * but don't resume IOs. | |
1107 | */ | |
1108 | spin_lock_irq(&hw->lock); | |
1109 | csio_post_event(&hw->sm, CSIO_HWE_PCIERR_SLOT_RESET); | |
1110 | ready = csio_is_hw_ready(hw); | |
1111 | spin_unlock_irq(&hw->lock); | |
1112 | ||
1113 | if (ready) { | |
1114 | return PCI_ERS_RESULT_RECOVERED; | |
1115 | } else { | |
1116 | dev_err(&pdev->dev, "Can't initialize HW when in slot reset\n"); | |
1117 | return PCI_ERS_RESULT_DISCONNECT; | |
1118 | } | |
1119 | } | |
1120 | ||
1121 | /* | |
1122 | * csio_pci_resume - Resume normal operations | |
1123 | * @pdev: PCI device | |
1124 | * | |
1125 | */ | |
1126 | static void | |
1127 | csio_pci_resume(struct pci_dev *pdev) | |
1128 | { | |
1129 | struct csio_hw *hw = pci_get_drvdata(pdev); | |
1130 | struct csio_lnode *ln; | |
1131 | int rv = 0; | |
1132 | int i; | |
1133 | ||
1134 | /* Bring the LINK UP and Resume IO */ | |
1135 | ||
1136 | for (i = 0; i < hw->num_pports; i++) { | |
1137 | ln = csio_shost_init(hw, &pdev->dev, true, NULL); | |
1138 | if (!ln) { | |
1139 | rv = -ENODEV; | |
1140 | break; | |
1141 | } | |
1142 | /* Initialize portid */ | |
1143 | ln->portid = hw->pport[i].portid; | |
1144 | ||
1145 | spin_lock_irq(&hw->lock); | |
1146 | if (csio_lnode_start(ln) != 0) | |
1147 | rv = -ENODEV; | |
1148 | spin_unlock_irq(&hw->lock); | |
1149 | ||
1150 | if (rv) | |
1151 | break; | |
1152 | ||
1153 | csio_lnode_init_post(ln); | |
1154 | } | |
1155 | ||
1156 | if (rv) | |
1157 | goto err_resume_exit; | |
1158 | ||
1159 | return; | |
1160 | ||
1161 | err_resume_exit: | |
1162 | csio_lnodes_block_request(hw); | |
1163 | spin_lock_irq(&hw->lock); | |
1164 | csio_hw_stop(hw); | |
1165 | spin_unlock_irq(&hw->lock); | |
1166 | csio_lnodes_unblock_request(hw); | |
1167 | csio_lnodes_exit(hw, 0); | |
1168 | csio_hw_free(hw); | |
1169 | dev_err(&pdev->dev, "resume of device failed: %d\n", rv); | |
1170 | } | |
1171 | ||
1172 | static struct pci_error_handlers csio_err_handler = { | |
1173 | .error_detected = csio_pci_error_detected, | |
1174 | .slot_reset = csio_pci_slot_reset, | |
1175 | .resume = csio_pci_resume, | |
1176 | }; | |
1177 | ||
1178 | static DEFINE_PCI_DEVICE_TABLE(csio_pci_tbl) = { | |
1179 | CSIO_DEVICE(CSIO_DEVID_T440DBG_FCOE, 0), /* T440DBG FCOE */ | |
1180 | CSIO_DEVICE(CSIO_DEVID_T420CR_FCOE, 0), /* T420CR FCOE */ | |
1181 | CSIO_DEVICE(CSIO_DEVID_T422CR_FCOE, 0), /* T422CR FCOE */ | |
1182 | CSIO_DEVICE(CSIO_DEVID_T440CR_FCOE, 0), /* T440CR FCOE */ | |
1183 | CSIO_DEVICE(CSIO_DEVID_T420BCH_FCOE, 0), /* T420BCH FCOE */ | |
1184 | CSIO_DEVICE(CSIO_DEVID_T440BCH_FCOE, 0), /* T440BCH FCOE */ | |
1185 | CSIO_DEVICE(CSIO_DEVID_T440CH_FCOE, 0), /* T440CH FCOE */ | |
1186 | CSIO_DEVICE(CSIO_DEVID_T420SO_FCOE, 0), /* T420SO FCOE */ | |
1187 | CSIO_DEVICE(CSIO_DEVID_T420CX_FCOE, 0), /* T420CX FCOE */ | |
1188 | CSIO_DEVICE(CSIO_DEVID_T420BT_FCOE, 0), /* T420BT FCOE */ | |
1189 | CSIO_DEVICE(CSIO_DEVID_T404BT_FCOE, 0), /* T404BT FCOE */ | |
1190 | CSIO_DEVICE(CSIO_DEVID_B420_FCOE, 0), /* B420 FCOE */ | |
1191 | CSIO_DEVICE(CSIO_DEVID_B404_FCOE, 0), /* B404 FCOE */ | |
1192 | CSIO_DEVICE(CSIO_DEVID_T480CR_FCOE, 0), /* T480 CR FCOE */ | |
1193 | CSIO_DEVICE(CSIO_DEVID_T440LPCR_FCOE, 0), /* T440 LP-CR FCOE */ | |
1194 | CSIO_DEVICE(CSIO_DEVID_PE10K, 0), /* PE10K FCOE */ | |
1195 | CSIO_DEVICE(CSIO_DEVID_PE10K_PF1, 0), /* PE10K FCOE on PF1 */ | |
1196 | { 0, 0, 0, 0, 0, 0, 0 } | |
1197 | }; | |
1198 | ||
1199 | ||
1200 | static struct pci_driver csio_pci_driver = { | |
1201 | .name = KBUILD_MODNAME, | |
1202 | .driver = { | |
1203 | .owner = THIS_MODULE, | |
1204 | }, | |
1205 | .id_table = csio_pci_tbl, | |
1206 | .probe = csio_probe_one, | |
1207 | .remove = csio_remove_one, | |
1208 | .err_handler = &csio_err_handler, | |
1209 | }; | |
1210 | ||
1211 | /* | |
1212 | * csio_init - Chelsio storage driver initialization function. | |
1213 | * | |
1214 | */ | |
1215 | static int __init | |
1216 | csio_init(void) | |
1217 | { | |
1218 | int rv = -ENOMEM; | |
1219 | ||
1220 | pr_info("%s %s\n", CSIO_DRV_DESC, CSIO_DRV_VERSION); | |
1221 | ||
1222 | csio_dfs_init(); | |
1223 | ||
1224 | csio_fcoe_transport = fc_attach_transport(&csio_fc_transport_funcs); | |
1225 | if (!csio_fcoe_transport) | |
1226 | goto err; | |
1227 | ||
1228 | csio_fcoe_transport_vport = | |
1229 | fc_attach_transport(&csio_fc_transport_vport_funcs); | |
1230 | if (!csio_fcoe_transport_vport) | |
1231 | goto err_vport; | |
1232 | ||
1233 | rv = pci_register_driver(&csio_pci_driver); | |
1234 | if (rv) | |
1235 | goto err_pci; | |
1236 | ||
1237 | return 0; | |
1238 | ||
1239 | err_pci: | |
1240 | fc_release_transport(csio_fcoe_transport_vport); | |
1241 | err_vport: | |
1242 | fc_release_transport(csio_fcoe_transport); | |
1243 | err: | |
1244 | csio_dfs_exit(); | |
1245 | return rv; | |
1246 | } | |
1247 | ||
1248 | /* | |
1249 | * csio_exit - Chelsio storage driver uninitialization . | |
1250 | * | |
1251 | * Function that gets called in the unload path. | |
1252 | */ | |
1253 | static void __exit | |
1254 | csio_exit(void) | |
1255 | { | |
1256 | pci_unregister_driver(&csio_pci_driver); | |
1257 | csio_dfs_exit(); | |
1258 | fc_release_transport(csio_fcoe_transport_vport); | |
1259 | fc_release_transport(csio_fcoe_transport); | |
1260 | } | |
1261 | ||
1262 | module_init(csio_init); | |
1263 | module_exit(csio_exit); | |
1264 | MODULE_AUTHOR(CSIO_DRV_AUTHOR); | |
1265 | MODULE_DESCRIPTION(CSIO_DRV_DESC); | |
1266 | MODULE_LICENSE(CSIO_DRV_LICENSE); | |
1267 | MODULE_DEVICE_TABLE(pci, csio_pci_tbl); | |
1268 | MODULE_VERSION(CSIO_DRV_VERSION); | |
1269 | MODULE_FIRMWARE(CSIO_FW_FNAME); |