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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 | */ | |
a3667aae NKI |
63 | static ssize_t |
64 | csio_mem_read(struct file *file, char __user *buf, size_t count, loff_t *ppos) | |
65 | { | |
66 | loff_t pos = *ppos; | |
496ad9aa | 67 | loff_t avail = file_inode(file)->i_size; |
a3667aae NKI |
68 | unsigned int mem = (uintptr_t)file->private_data & 3; |
69 | struct csio_hw *hw = file->private_data - mem; | |
70 | ||
71 | if (pos < 0) | |
72 | return -EINVAL; | |
73 | if (pos >= avail) | |
74 | return 0; | |
75 | if (count > avail - pos) | |
76 | count = avail - pos; | |
77 | ||
78 | while (count) { | |
79 | size_t len; | |
80 | int ret, ofst; | |
81 | __be32 data[16]; | |
82 | ||
83 | if (mem == MEM_MC) | |
7cc16380 AB |
84 | ret = hw->chip_ops->chip_mc_read(hw, 0, pos, |
85 | data, NULL); | |
a3667aae | 86 | else |
7cc16380 AB |
87 | ret = hw->chip_ops->chip_edc_read(hw, mem, pos, |
88 | data, NULL); | |
a3667aae NKI |
89 | if (ret) |
90 | return ret; | |
91 | ||
92 | ofst = pos % sizeof(data); | |
93 | len = min(count, sizeof(data) - ofst); | |
94 | if (copy_to_user(buf, (u8 *)data + ofst, len)) | |
95 | return -EFAULT; | |
96 | ||
97 | buf += len; | |
98 | pos += len; | |
99 | count -= len; | |
100 | } | |
101 | count = pos - *ppos; | |
102 | *ppos = pos; | |
103 | return count; | |
104 | } | |
105 | ||
106 | static const struct file_operations csio_mem_debugfs_fops = { | |
107 | .owner = THIS_MODULE, | |
f07cda8f | 108 | .open = simple_open, |
a3667aae NKI |
109 | .read = csio_mem_read, |
110 | .llseek = default_llseek, | |
111 | }; | |
112 | ||
7cc16380 | 113 | void csio_add_debugfs_mem(struct csio_hw *hw, const char *name, |
6f039790 | 114 | unsigned int idx, unsigned int size_mb) |
a3667aae | 115 | { |
e59b4e91 DH |
116 | debugfs_create_file_size(name, S_IRUSR, hw->debugfs_root, |
117 | (void *)hw + idx, &csio_mem_debugfs_fops, | |
118 | size_mb << 20); | |
a3667aae NKI |
119 | } |
120 | ||
6f039790 | 121 | static int csio_setup_debugfs(struct csio_hw *hw) |
a3667aae NKI |
122 | { |
123 | int i; | |
124 | ||
125 | if (IS_ERR_OR_NULL(hw->debugfs_root)) | |
126 | return -1; | |
127 | ||
6559a7e8 HS |
128 | i = csio_rd_reg32(hw, MA_TARGET_MEM_ENABLE_A); |
129 | if (i & EDRAM0_ENABLE_F) | |
a3667aae | 130 | csio_add_debugfs_mem(hw, "edc0", MEM_EDC0, 5); |
6559a7e8 | 131 | if (i & EDRAM1_ENABLE_F) |
a3667aae | 132 | csio_add_debugfs_mem(hw, "edc1", MEM_EDC1, 5); |
7cc16380 AB |
133 | |
134 | hw->chip_ops->chip_dfs_create_ext_mem(hw); | |
a3667aae NKI |
135 | return 0; |
136 | } | |
137 | ||
138 | /* | |
139 | * csio_dfs_create - Creates and sets up per-hw debugfs. | |
140 | * | |
141 | */ | |
142 | static int | |
143 | csio_dfs_create(struct csio_hw *hw) | |
144 | { | |
145 | if (csio_debugfs_root) { | |
146 | hw->debugfs_root = debugfs_create_dir(pci_name(hw->pdev), | |
147 | csio_debugfs_root); | |
148 | csio_setup_debugfs(hw); | |
149 | } | |
150 | ||
151 | return 0; | |
152 | } | |
153 | ||
154 | /* | |
155 | * csio_dfs_destroy - Destroys per-hw debugfs. | |
156 | */ | |
157 | static int | |
158 | csio_dfs_destroy(struct csio_hw *hw) | |
159 | { | |
160 | if (hw->debugfs_root) | |
161 | debugfs_remove_recursive(hw->debugfs_root); | |
162 | ||
163 | return 0; | |
164 | } | |
165 | ||
166 | /* | |
167 | * csio_dfs_init - Debug filesystem initialization for the module. | |
168 | * | |
169 | */ | |
170 | static int | |
171 | csio_dfs_init(void) | |
172 | { | |
173 | csio_debugfs_root = debugfs_create_dir(KBUILD_MODNAME, NULL); | |
174 | if (!csio_debugfs_root) | |
175 | pr_warn("Could not create debugfs entry, continuing\n"); | |
176 | ||
177 | return 0; | |
178 | } | |
179 | ||
180 | /* | |
181 | * csio_dfs_exit - debugfs cleanup for the module. | |
182 | */ | |
183 | static void | |
184 | csio_dfs_exit(void) | |
185 | { | |
186 | debugfs_remove(csio_debugfs_root); | |
187 | } | |
188 | ||
189 | /* | |
190 | * csio_pci_init - PCI initialization. | |
191 | * @pdev: PCI device. | |
192 | * @bars: Bitmask of bars to be requested. | |
193 | * | |
194 | * Initializes the PCI function by enabling MMIO, setting bus | |
195 | * mastership and setting DMA mask. | |
196 | */ | |
197 | static int | |
198 | csio_pci_init(struct pci_dev *pdev, int *bars) | |
199 | { | |
200 | int rv = -ENODEV; | |
201 | ||
202 | *bars = pci_select_bars(pdev, IORESOURCE_MEM); | |
203 | ||
204 | if (pci_enable_device_mem(pdev)) | |
205 | goto err; | |
206 | ||
207 | if (pci_request_selected_regions(pdev, *bars, KBUILD_MODNAME)) | |
208 | goto err_disable_device; | |
209 | ||
210 | pci_set_master(pdev); | |
211 | pci_try_set_mwi(pdev); | |
212 | ||
213 | if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(64))) { | |
214 | pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(64)); | |
215 | } else if (!pci_set_dma_mask(pdev, DMA_BIT_MASK(32))) { | |
216 | pci_set_consistent_dma_mask(pdev, DMA_BIT_MASK(32)); | |
217 | } else { | |
218 | dev_err(&pdev->dev, "No suitable DMA available.\n"); | |
219 | goto err_release_regions; | |
220 | } | |
221 | ||
222 | return 0; | |
223 | ||
224 | err_release_regions: | |
225 | pci_release_selected_regions(pdev, *bars); | |
226 | err_disable_device: | |
227 | pci_disable_device(pdev); | |
228 | err: | |
229 | return rv; | |
230 | ||
231 | } | |
232 | ||
233 | /* | |
234 | * csio_pci_exit - PCI unitialization. | |
235 | * @pdev: PCI device. | |
236 | * @bars: Bars to be released. | |
237 | * | |
238 | */ | |
239 | static void | |
240 | csio_pci_exit(struct pci_dev *pdev, int *bars) | |
241 | { | |
242 | pci_release_selected_regions(pdev, *bars); | |
243 | pci_disable_device(pdev); | |
244 | } | |
245 | ||
246 | /* | |
247 | * csio_hw_init_workers - Initialize the HW module's worker threads. | |
248 | * @hw: HW module. | |
249 | * | |
250 | */ | |
251 | static void | |
252 | csio_hw_init_workers(struct csio_hw *hw) | |
253 | { | |
254 | INIT_WORK(&hw->evtq_work, csio_evtq_worker); | |
255 | } | |
256 | ||
257 | static void | |
258 | csio_hw_exit_workers(struct csio_hw *hw) | |
259 | { | |
260 | cancel_work_sync(&hw->evtq_work); | |
261 | flush_scheduled_work(); | |
262 | } | |
263 | ||
264 | static int | |
265 | csio_create_queues(struct csio_hw *hw) | |
266 | { | |
267 | int i, j; | |
268 | struct csio_mgmtm *mgmtm = csio_hw_to_mgmtm(hw); | |
269 | int rv; | |
270 | struct csio_scsi_cpu_info *info; | |
271 | ||
272 | if (hw->flags & CSIO_HWF_Q_FW_ALLOCED) | |
273 | return 0; | |
274 | ||
275 | if (hw->intr_mode != CSIO_IM_MSIX) { | |
276 | rv = csio_wr_iq_create(hw, NULL, hw->intr_iq_idx, | |
277 | 0, hw->pport[0].portid, false, NULL); | |
278 | if (rv != 0) { | |
279 | csio_err(hw, " Forward Interrupt IQ failed!: %d\n", rv); | |
280 | return rv; | |
281 | } | |
282 | } | |
283 | ||
284 | /* FW event queue */ | |
285 | rv = csio_wr_iq_create(hw, NULL, hw->fwevt_iq_idx, | |
286 | csio_get_fwevt_intr_idx(hw), | |
287 | hw->pport[0].portid, true, NULL); | |
288 | if (rv != 0) { | |
289 | csio_err(hw, "FW event IQ config failed!: %d\n", rv); | |
290 | return rv; | |
291 | } | |
292 | ||
293 | /* Create mgmt queue */ | |
294 | rv = csio_wr_eq_create(hw, NULL, mgmtm->eq_idx, | |
295 | mgmtm->iq_idx, hw->pport[0].portid, NULL); | |
296 | ||
297 | if (rv != 0) { | |
298 | csio_err(hw, "Mgmt EQ create failed!: %d\n", rv); | |
299 | goto err; | |
300 | } | |
301 | ||
302 | /* Create SCSI queues */ | |
303 | for (i = 0; i < hw->num_pports; i++) { | |
304 | info = &hw->scsi_cpu_info[i]; | |
305 | ||
306 | for (j = 0; j < info->max_cpus; j++) { | |
307 | struct csio_scsi_qset *sqset = &hw->sqset[i][j]; | |
308 | ||
309 | rv = csio_wr_iq_create(hw, NULL, sqset->iq_idx, | |
310 | sqset->intr_idx, i, false, NULL); | |
311 | if (rv != 0) { | |
312 | csio_err(hw, | |
313 | "SCSI module IQ config failed [%d][%d]:%d\n", | |
314 | i, j, rv); | |
315 | goto err; | |
316 | } | |
317 | rv = csio_wr_eq_create(hw, NULL, sqset->eq_idx, | |
318 | sqset->iq_idx, i, NULL); | |
319 | if (rv != 0) { | |
320 | csio_err(hw, | |
321 | "SCSI module EQ config failed [%d][%d]:%d\n", | |
322 | i, j, rv); | |
323 | goto err; | |
324 | } | |
325 | } /* for all CPUs */ | |
326 | } /* For all ports */ | |
327 | ||
328 | hw->flags |= CSIO_HWF_Q_FW_ALLOCED; | |
329 | return 0; | |
330 | err: | |
331 | csio_wr_destroy_queues(hw, true); | |
332 | return -EINVAL; | |
333 | } | |
334 | ||
335 | /* | |
336 | * csio_config_queues - Configure the DMA queues. | |
337 | * @hw: HW module. | |
338 | * | |
339 | * Allocates memory for queues are registers them with FW. | |
340 | */ | |
341 | int | |
342 | csio_config_queues(struct csio_hw *hw) | |
343 | { | |
344 | int i, j, idx, k = 0; | |
345 | int rv; | |
346 | struct csio_scsi_qset *sqset; | |
347 | struct csio_mgmtm *mgmtm = csio_hw_to_mgmtm(hw); | |
348 | struct csio_scsi_qset *orig; | |
349 | struct csio_scsi_cpu_info *info; | |
350 | ||
351 | if (hw->flags & CSIO_HWF_Q_MEM_ALLOCED) | |
352 | return csio_create_queues(hw); | |
353 | ||
354 | /* Calculate number of SCSI queues for MSIX we would like */ | |
355 | hw->num_scsi_msix_cpus = num_online_cpus(); | |
356 | hw->num_sqsets = num_online_cpus() * hw->num_pports; | |
357 | ||
358 | if (hw->num_sqsets > CSIO_MAX_SCSI_QSETS) { | |
359 | hw->num_sqsets = CSIO_MAX_SCSI_QSETS; | |
360 | hw->num_scsi_msix_cpus = CSIO_MAX_SCSI_CPU; | |
361 | } | |
362 | ||
363 | /* Initialize max_cpus, may get reduced during msix allocations */ | |
364 | for (i = 0; i < hw->num_pports; i++) | |
365 | hw->scsi_cpu_info[i].max_cpus = hw->num_scsi_msix_cpus; | |
366 | ||
367 | csio_dbg(hw, "nsqsets:%d scpus:%d\n", | |
368 | hw->num_sqsets, hw->num_scsi_msix_cpus); | |
369 | ||
370 | csio_intr_enable(hw); | |
371 | ||
372 | if (hw->intr_mode != CSIO_IM_MSIX) { | |
373 | ||
374 | /* Allocate Forward interrupt iq. */ | |
375 | hw->intr_iq_idx = csio_wr_alloc_q(hw, CSIO_INTR_IQSIZE, | |
376 | CSIO_INTR_WRSIZE, CSIO_INGRESS, | |
377 | (void *)hw, 0, 0, NULL); | |
378 | if (hw->intr_iq_idx == -1) { | |
379 | csio_err(hw, | |
380 | "Forward interrupt queue creation failed\n"); | |
381 | goto intr_disable; | |
382 | } | |
383 | } | |
384 | ||
385 | /* Allocate the FW evt queue */ | |
386 | hw->fwevt_iq_idx = csio_wr_alloc_q(hw, CSIO_FWEVT_IQSIZE, | |
387 | CSIO_FWEVT_WRSIZE, | |
388 | CSIO_INGRESS, (void *)hw, | |
389 | CSIO_FWEVT_FLBUFS, 0, | |
390 | csio_fwevt_intx_handler); | |
391 | if (hw->fwevt_iq_idx == -1) { | |
392 | csio_err(hw, "FW evt queue creation failed\n"); | |
393 | goto intr_disable; | |
394 | } | |
395 | ||
396 | /* Allocate the mgmt queue */ | |
397 | mgmtm->eq_idx = csio_wr_alloc_q(hw, CSIO_MGMT_EQSIZE, | |
398 | CSIO_MGMT_EQ_WRSIZE, | |
399 | CSIO_EGRESS, (void *)hw, 0, 0, NULL); | |
400 | if (mgmtm->eq_idx == -1) { | |
401 | csio_err(hw, "Failed to alloc egress queue for mgmt module\n"); | |
402 | goto intr_disable; | |
403 | } | |
404 | ||
405 | /* Use FW IQ for MGMT req completion */ | |
406 | mgmtm->iq_idx = hw->fwevt_iq_idx; | |
407 | ||
408 | /* Allocate SCSI queues */ | |
409 | for (i = 0; i < hw->num_pports; i++) { | |
410 | info = &hw->scsi_cpu_info[i]; | |
411 | ||
412 | for (j = 0; j < hw->num_scsi_msix_cpus; j++) { | |
413 | sqset = &hw->sqset[i][j]; | |
414 | ||
415 | if (j >= info->max_cpus) { | |
416 | k = j % info->max_cpus; | |
417 | orig = &hw->sqset[i][k]; | |
418 | sqset->eq_idx = orig->eq_idx; | |
419 | sqset->iq_idx = orig->iq_idx; | |
420 | continue; | |
421 | } | |
422 | ||
423 | idx = csio_wr_alloc_q(hw, csio_scsi_eqsize, 0, | |
424 | CSIO_EGRESS, (void *)hw, 0, 0, | |
425 | NULL); | |
426 | if (idx == -1) { | |
427 | csio_err(hw, "EQ creation failed for idx:%d\n", | |
428 | idx); | |
429 | goto intr_disable; | |
430 | } | |
431 | ||
432 | sqset->eq_idx = idx; | |
433 | ||
434 | idx = csio_wr_alloc_q(hw, CSIO_SCSI_IQSIZE, | |
435 | CSIO_SCSI_IQ_WRSZ, CSIO_INGRESS, | |
436 | (void *)hw, 0, 0, | |
437 | csio_scsi_intx_handler); | |
438 | if (idx == -1) { | |
439 | csio_err(hw, "IQ creation failed for idx:%d\n", | |
440 | idx); | |
441 | goto intr_disable; | |
442 | } | |
443 | sqset->iq_idx = idx; | |
444 | } /* for all CPUs */ | |
445 | } /* For all ports */ | |
446 | ||
447 | hw->flags |= CSIO_HWF_Q_MEM_ALLOCED; | |
448 | ||
449 | rv = csio_create_queues(hw); | |
450 | if (rv != 0) | |
451 | goto intr_disable; | |
452 | ||
453 | /* | |
454 | * Now request IRQs for the vectors. In the event of a failure, | |
455 | * cleanup is handled internally by this function. | |
456 | */ | |
457 | rv = csio_request_irqs(hw); | |
458 | if (rv != 0) | |
459 | return -EINVAL; | |
460 | ||
461 | return 0; | |
462 | ||
463 | intr_disable: | |
464 | csio_intr_disable(hw, false); | |
465 | ||
466 | return -EINVAL; | |
467 | } | |
468 | ||
469 | static int | |
470 | csio_resource_alloc(struct csio_hw *hw) | |
471 | { | |
472 | struct csio_wrm *wrm = csio_hw_to_wrm(hw); | |
473 | int rv = -ENOMEM; | |
474 | ||
475 | wrm->num_q = ((CSIO_MAX_SCSI_QSETS * 2) + CSIO_HW_NIQ + | |
476 | CSIO_HW_NEQ + CSIO_HW_NFLQ + CSIO_HW_NINTXQ); | |
477 | ||
478 | hw->mb_mempool = mempool_create_kmalloc_pool(CSIO_MIN_MEMPOOL_SZ, | |
479 | sizeof(struct csio_mb)); | |
480 | if (!hw->mb_mempool) | |
481 | goto err; | |
482 | ||
483 | hw->rnode_mempool = mempool_create_kmalloc_pool(CSIO_MIN_MEMPOOL_SZ, | |
484 | sizeof(struct csio_rnode)); | |
485 | if (!hw->rnode_mempool) | |
486 | goto err_free_mb_mempool; | |
487 | ||
488 | hw->scsi_pci_pool = pci_pool_create("csio_scsi_pci_pool", hw->pdev, | |
489 | CSIO_SCSI_RSP_LEN, 8, 0); | |
490 | if (!hw->scsi_pci_pool) | |
491 | goto err_free_rn_pool; | |
492 | ||
493 | return 0; | |
494 | ||
495 | err_free_rn_pool: | |
496 | mempool_destroy(hw->rnode_mempool); | |
497 | hw->rnode_mempool = NULL; | |
498 | err_free_mb_mempool: | |
499 | mempool_destroy(hw->mb_mempool); | |
500 | hw->mb_mempool = NULL; | |
501 | err: | |
502 | return rv; | |
503 | } | |
504 | ||
505 | static void | |
506 | csio_resource_free(struct csio_hw *hw) | |
507 | { | |
508 | pci_pool_destroy(hw->scsi_pci_pool); | |
509 | hw->scsi_pci_pool = NULL; | |
510 | mempool_destroy(hw->rnode_mempool); | |
511 | hw->rnode_mempool = NULL; | |
512 | mempool_destroy(hw->mb_mempool); | |
513 | hw->mb_mempool = NULL; | |
514 | } | |
515 | ||
516 | /* | |
517 | * csio_hw_alloc - Allocate and initialize the HW module. | |
518 | * @pdev: PCI device. | |
519 | * | |
520 | * Allocates HW structure, DMA, memory resources, maps BARS to | |
521 | * host memory and initializes HW module. | |
522 | */ | |
6f039790 | 523 | static struct csio_hw *csio_hw_alloc(struct pci_dev *pdev) |
a3667aae NKI |
524 | { |
525 | struct csio_hw *hw; | |
526 | ||
527 | hw = kzalloc(sizeof(struct csio_hw), GFP_KERNEL); | |
528 | if (!hw) | |
529 | goto err; | |
530 | ||
531 | hw->pdev = pdev; | |
532 | strncpy(hw->drv_version, CSIO_DRV_VERSION, 32); | |
533 | ||
534 | /* memory pool/DMA pool allocation */ | |
535 | if (csio_resource_alloc(hw)) | |
536 | goto err_free_hw; | |
537 | ||
538 | /* Get the start address of registers from BAR 0 */ | |
539 | hw->regstart = ioremap_nocache(pci_resource_start(pdev, 0), | |
540 | pci_resource_len(pdev, 0)); | |
541 | if (!hw->regstart) { | |
542 | csio_err(hw, "Could not map BAR 0, regstart = %p\n", | |
543 | hw->regstart); | |
544 | goto err_resource_free; | |
545 | } | |
546 | ||
547 | csio_hw_init_workers(hw); | |
548 | ||
549 | if (csio_hw_init(hw)) | |
550 | goto err_unmap_bar; | |
551 | ||
552 | csio_dfs_create(hw); | |
553 | ||
554 | csio_dbg(hw, "hw:%p\n", hw); | |
555 | ||
556 | return hw; | |
557 | ||
558 | err_unmap_bar: | |
559 | csio_hw_exit_workers(hw); | |
560 | iounmap(hw->regstart); | |
561 | err_resource_free: | |
562 | csio_resource_free(hw); | |
563 | err_free_hw: | |
564 | kfree(hw); | |
565 | err: | |
566 | return NULL; | |
567 | } | |
568 | ||
569 | /* | |
570 | * csio_hw_free - Uninitialize and free the HW module. | |
571 | * @hw: The HW module | |
572 | * | |
573 | * Disable interrupts, uninit the HW module, free resources, free hw. | |
574 | */ | |
575 | static void | |
576 | csio_hw_free(struct csio_hw *hw) | |
577 | { | |
578 | csio_intr_disable(hw, true); | |
579 | csio_hw_exit_workers(hw); | |
580 | csio_hw_exit(hw); | |
581 | iounmap(hw->regstart); | |
582 | csio_dfs_destroy(hw); | |
583 | csio_resource_free(hw); | |
584 | kfree(hw); | |
585 | } | |
586 | ||
587 | /** | |
588 | * csio_shost_init - Create and initialize the lnode module. | |
589 | * @hw: The HW module. | |
590 | * @dev: The device associated with this invocation. | |
591 | * @probe: Called from probe context or not? | |
592 | * @os_pln: Parent lnode if any. | |
593 | * | |
594 | * Allocates lnode structure via scsi_host_alloc, initializes | |
595 | * shost, initializes lnode module and registers with SCSI ML | |
596 | * via scsi_host_add. This function is shared between physical and | |
597 | * virtual node ports. | |
598 | */ | |
599 | struct csio_lnode * | |
600 | csio_shost_init(struct csio_hw *hw, struct device *dev, | |
601 | bool probe, struct csio_lnode *pln) | |
602 | { | |
603 | struct Scsi_Host *shost = NULL; | |
604 | struct csio_lnode *ln; | |
605 | ||
606 | csio_fcoe_shost_template.cmd_per_lun = csio_lun_qdepth; | |
607 | csio_fcoe_shost_vport_template.cmd_per_lun = csio_lun_qdepth; | |
608 | ||
609 | /* | |
610 | * hw->pdev is the physical port's PCI dev structure, | |
611 | * which will be different from the NPIV dev structure. | |
612 | */ | |
613 | if (dev == &hw->pdev->dev) | |
614 | shost = scsi_host_alloc( | |
615 | &csio_fcoe_shost_template, | |
616 | sizeof(struct csio_lnode)); | |
617 | else | |
618 | shost = scsi_host_alloc( | |
619 | &csio_fcoe_shost_vport_template, | |
620 | sizeof(struct csio_lnode)); | |
621 | ||
622 | if (!shost) | |
623 | goto err; | |
624 | ||
625 | ln = shost_priv(shost); | |
626 | memset(ln, 0, sizeof(struct csio_lnode)); | |
627 | ||
628 | /* Link common lnode to this lnode */ | |
629 | ln->dev_num = (shost->host_no << 16); | |
630 | ||
631 | shost->can_queue = CSIO_MAX_QUEUE; | |
632 | shost->this_id = -1; | |
633 | shost->unique_id = shost->host_no; | |
634 | shost->max_cmd_len = 16; /* Max CDB length supported */ | |
635 | shost->max_id = min_t(uint32_t, csio_fcoe_rnodes, | |
636 | hw->fres_info.max_ssns); | |
637 | shost->max_lun = CSIO_MAX_LUN; | |
638 | if (dev == &hw->pdev->dev) | |
639 | shost->transportt = csio_fcoe_transport; | |
640 | else | |
641 | shost->transportt = csio_fcoe_transport_vport; | |
642 | ||
643 | /* root lnode */ | |
644 | if (!hw->rln) | |
645 | hw->rln = ln; | |
646 | ||
647 | /* Other initialization here: Common, Transport specific */ | |
648 | if (csio_lnode_init(ln, hw, pln)) | |
649 | goto err_shost_put; | |
650 | ||
651 | if (scsi_add_host(shost, dev)) | |
652 | goto err_lnode_exit; | |
653 | ||
654 | return ln; | |
655 | ||
656 | err_lnode_exit: | |
657 | csio_lnode_exit(ln); | |
658 | err_shost_put: | |
659 | scsi_host_put(shost); | |
660 | err: | |
661 | return NULL; | |
662 | } | |
663 | ||
664 | /** | |
665 | * csio_shost_exit - De-instantiate the shost. | |
666 | * @ln: The lnode module corresponding to the shost. | |
667 | * | |
668 | */ | |
669 | void | |
670 | csio_shost_exit(struct csio_lnode *ln) | |
671 | { | |
672 | struct Scsi_Host *shost = csio_ln_to_shost(ln); | |
673 | struct csio_hw *hw = csio_lnode_to_hw(ln); | |
674 | ||
675 | /* Inform transport */ | |
676 | fc_remove_host(shost); | |
677 | ||
678 | /* Inform SCSI ML */ | |
679 | scsi_remove_host(shost); | |
680 | ||
681 | /* Flush all the events, so that any rnode removal events | |
682 | * already queued are all handled, before we remove the lnode. | |
683 | */ | |
684 | spin_lock_irq(&hw->lock); | |
685 | csio_evtq_flush(hw); | |
686 | spin_unlock_irq(&hw->lock); | |
687 | ||
688 | csio_lnode_exit(ln); | |
689 | scsi_host_put(shost); | |
690 | } | |
691 | ||
692 | struct csio_lnode * | |
693 | csio_lnode_alloc(struct csio_hw *hw) | |
694 | { | |
695 | return csio_shost_init(hw, &hw->pdev->dev, false, NULL); | |
696 | } | |
697 | ||
698 | void | |
699 | csio_lnodes_block_request(struct csio_hw *hw) | |
700 | { | |
701 | struct Scsi_Host *shost; | |
702 | struct csio_lnode *sln; | |
703 | struct csio_lnode *ln; | |
704 | struct list_head *cur_ln, *cur_cln; | |
705 | struct csio_lnode **lnode_list; | |
706 | int cur_cnt = 0, ii; | |
707 | ||
708 | lnode_list = kzalloc((sizeof(struct csio_lnode *) * hw->num_lns), | |
709 | GFP_KERNEL); | |
710 | if (!lnode_list) { | |
711 | csio_err(hw, "Failed to allocate lnodes_list"); | |
712 | return; | |
713 | } | |
714 | ||
715 | spin_lock_irq(&hw->lock); | |
716 | /* Traverse sibling lnodes */ | |
717 | list_for_each(cur_ln, &hw->sln_head) { | |
718 | sln = (struct csio_lnode *) cur_ln; | |
719 | lnode_list[cur_cnt++] = sln; | |
720 | ||
721 | /* Traverse children lnodes */ | |
722 | list_for_each(cur_cln, &sln->cln_head) | |
723 | lnode_list[cur_cnt++] = (struct csio_lnode *) cur_cln; | |
724 | } | |
725 | spin_unlock_irq(&hw->lock); | |
726 | ||
727 | for (ii = 0; ii < cur_cnt; ii++) { | |
728 | csio_dbg(hw, "Blocking IOs on lnode: %p\n", lnode_list[ii]); | |
729 | ln = lnode_list[ii]; | |
730 | shost = csio_ln_to_shost(ln); | |
731 | scsi_block_requests(shost); | |
732 | ||
733 | } | |
734 | kfree(lnode_list); | |
735 | } | |
736 | ||
737 | void | |
738 | csio_lnodes_unblock_request(struct csio_hw *hw) | |
739 | { | |
740 | struct csio_lnode *ln; | |
741 | struct Scsi_Host *shost; | |
742 | struct csio_lnode *sln; | |
743 | struct list_head *cur_ln, *cur_cln; | |
744 | struct csio_lnode **lnode_list; | |
745 | int cur_cnt = 0, ii; | |
746 | ||
747 | lnode_list = kzalloc((sizeof(struct csio_lnode *) * hw->num_lns), | |
748 | GFP_KERNEL); | |
749 | if (!lnode_list) { | |
750 | csio_err(hw, "Failed to allocate lnodes_list"); | |
751 | return; | |
752 | } | |
753 | ||
754 | spin_lock_irq(&hw->lock); | |
755 | /* Traverse sibling lnodes */ | |
756 | list_for_each(cur_ln, &hw->sln_head) { | |
757 | sln = (struct csio_lnode *) cur_ln; | |
758 | lnode_list[cur_cnt++] = sln; | |
759 | ||
760 | /* Traverse children lnodes */ | |
761 | list_for_each(cur_cln, &sln->cln_head) | |
762 | lnode_list[cur_cnt++] = (struct csio_lnode *) cur_cln; | |
763 | } | |
764 | spin_unlock_irq(&hw->lock); | |
765 | ||
766 | for (ii = 0; ii < cur_cnt; ii++) { | |
767 | csio_dbg(hw, "unblocking IOs on lnode: %p\n", lnode_list[ii]); | |
768 | ln = lnode_list[ii]; | |
769 | shost = csio_ln_to_shost(ln); | |
770 | scsi_unblock_requests(shost); | |
771 | } | |
772 | kfree(lnode_list); | |
773 | } | |
774 | ||
775 | void | |
776 | csio_lnodes_block_by_port(struct csio_hw *hw, uint8_t portid) | |
777 | { | |
778 | struct csio_lnode *ln; | |
779 | struct Scsi_Host *shost; | |
780 | struct csio_lnode *sln; | |
781 | struct list_head *cur_ln, *cur_cln; | |
782 | struct csio_lnode **lnode_list; | |
783 | int cur_cnt = 0, ii; | |
784 | ||
785 | lnode_list = kzalloc((sizeof(struct csio_lnode *) * hw->num_lns), | |
786 | GFP_KERNEL); | |
787 | if (!lnode_list) { | |
788 | csio_err(hw, "Failed to allocate lnodes_list"); | |
789 | return; | |
790 | } | |
791 | ||
792 | spin_lock_irq(&hw->lock); | |
793 | /* Traverse sibling lnodes */ | |
794 | list_for_each(cur_ln, &hw->sln_head) { | |
795 | sln = (struct csio_lnode *) cur_ln; | |
796 | if (sln->portid != portid) | |
797 | continue; | |
798 | ||
799 | lnode_list[cur_cnt++] = sln; | |
800 | ||
801 | /* Traverse children lnodes */ | |
802 | list_for_each(cur_cln, &sln->cln_head) | |
803 | lnode_list[cur_cnt++] = (struct csio_lnode *) cur_cln; | |
804 | } | |
805 | spin_unlock_irq(&hw->lock); | |
806 | ||
807 | for (ii = 0; ii < cur_cnt; ii++) { | |
808 | csio_dbg(hw, "Blocking IOs on lnode: %p\n", lnode_list[ii]); | |
809 | ln = lnode_list[ii]; | |
810 | shost = csio_ln_to_shost(ln); | |
811 | scsi_block_requests(shost); | |
812 | } | |
813 | kfree(lnode_list); | |
814 | } | |
815 | ||
816 | void | |
817 | csio_lnodes_unblock_by_port(struct csio_hw *hw, uint8_t portid) | |
818 | { | |
819 | struct csio_lnode *ln; | |
820 | struct Scsi_Host *shost; | |
821 | struct csio_lnode *sln; | |
822 | struct list_head *cur_ln, *cur_cln; | |
823 | struct csio_lnode **lnode_list; | |
824 | int cur_cnt = 0, ii; | |
825 | ||
826 | lnode_list = kzalloc((sizeof(struct csio_lnode *) * hw->num_lns), | |
827 | GFP_KERNEL); | |
828 | if (!lnode_list) { | |
829 | csio_err(hw, "Failed to allocate lnodes_list"); | |
830 | return; | |
831 | } | |
832 | ||
833 | spin_lock_irq(&hw->lock); | |
834 | /* Traverse sibling lnodes */ | |
835 | list_for_each(cur_ln, &hw->sln_head) { | |
836 | sln = (struct csio_lnode *) cur_ln; | |
837 | if (sln->portid != portid) | |
838 | continue; | |
839 | lnode_list[cur_cnt++] = sln; | |
840 | ||
841 | /* Traverse children lnodes */ | |
842 | list_for_each(cur_cln, &sln->cln_head) | |
843 | lnode_list[cur_cnt++] = (struct csio_lnode *) cur_cln; | |
844 | } | |
845 | spin_unlock_irq(&hw->lock); | |
846 | ||
847 | for (ii = 0; ii < cur_cnt; ii++) { | |
848 | csio_dbg(hw, "unblocking IOs on lnode: %p\n", lnode_list[ii]); | |
849 | ln = lnode_list[ii]; | |
850 | shost = csio_ln_to_shost(ln); | |
851 | scsi_unblock_requests(shost); | |
852 | } | |
853 | kfree(lnode_list); | |
854 | } | |
855 | ||
856 | void | |
857 | csio_lnodes_exit(struct csio_hw *hw, bool npiv) | |
858 | { | |
859 | struct csio_lnode *sln; | |
860 | struct csio_lnode *ln; | |
861 | struct list_head *cur_ln, *cur_cln; | |
862 | struct csio_lnode **lnode_list; | |
863 | int cur_cnt = 0, ii; | |
864 | ||
865 | lnode_list = kzalloc((sizeof(struct csio_lnode *) * hw->num_lns), | |
866 | GFP_KERNEL); | |
867 | if (!lnode_list) { | |
868 | csio_err(hw, "lnodes_exit: Failed to allocate lnodes_list.\n"); | |
869 | return; | |
870 | } | |
871 | ||
872 | /* Get all child lnodes(NPIV ports) */ | |
873 | spin_lock_irq(&hw->lock); | |
874 | list_for_each(cur_ln, &hw->sln_head) { | |
875 | sln = (struct csio_lnode *) cur_ln; | |
876 | ||
877 | /* Traverse children lnodes */ | |
878 | list_for_each(cur_cln, &sln->cln_head) | |
879 | lnode_list[cur_cnt++] = (struct csio_lnode *) cur_cln; | |
880 | } | |
881 | spin_unlock_irq(&hw->lock); | |
882 | ||
883 | /* Delete NPIV lnodes */ | |
884 | for (ii = 0; ii < cur_cnt; ii++) { | |
885 | csio_dbg(hw, "Deleting child lnode: %p\n", lnode_list[ii]); | |
886 | ln = lnode_list[ii]; | |
887 | fc_vport_terminate(ln->fc_vport); | |
888 | } | |
889 | ||
890 | /* Delete only npiv lnodes */ | |
891 | if (npiv) | |
892 | goto free_lnodes; | |
893 | ||
894 | cur_cnt = 0; | |
895 | /* Get all physical lnodes */ | |
896 | spin_lock_irq(&hw->lock); | |
897 | /* Traverse sibling lnodes */ | |
898 | list_for_each(cur_ln, &hw->sln_head) { | |
899 | sln = (struct csio_lnode *) cur_ln; | |
900 | lnode_list[cur_cnt++] = sln; | |
901 | } | |
902 | spin_unlock_irq(&hw->lock); | |
903 | ||
904 | /* Delete physical lnodes */ | |
905 | for (ii = 0; ii < cur_cnt; ii++) { | |
906 | csio_dbg(hw, "Deleting parent lnode: %p\n", lnode_list[ii]); | |
907 | csio_shost_exit(lnode_list[ii]); | |
908 | } | |
909 | ||
910 | free_lnodes: | |
911 | kfree(lnode_list); | |
912 | } | |
913 | ||
914 | /* | |
915 | * csio_lnode_init_post: Set lnode attributes after starting HW. | |
916 | * @ln: lnode. | |
917 | * | |
918 | */ | |
919 | static void | |
920 | csio_lnode_init_post(struct csio_lnode *ln) | |
921 | { | |
922 | struct Scsi_Host *shost = csio_ln_to_shost(ln); | |
923 | ||
924 | csio_fchost_attr_init(ln); | |
925 | ||
926 | scsi_scan_host(shost); | |
927 | } | |
928 | ||
929 | /* | |
930 | * csio_probe_one - Instantiate this function. | |
931 | * @pdev: PCI device | |
932 | * @id: Device ID | |
933 | * | |
934 | * This is the .probe() callback of the driver. This function: | |
935 | * - Initializes the PCI function by enabling MMIO, setting bus | |
936 | * mastership and setting DMA mask. | |
937 | * - Allocates HW structure, DMA, memory resources, maps BARS to | |
938 | * host memory and initializes HW module. | |
939 | * - Allocates lnode structure via scsi_host_alloc, initializes | |
940 | * shost, initialized lnode module and registers with SCSI ML | |
941 | * via scsi_host_add. | |
942 | * - Enables interrupts, and starts the chip by kicking off the | |
943 | * HW state machine. | |
944 | * - Once hardware is ready, initiated scan of the host via | |
945 | * scsi_scan_host. | |
946 | */ | |
6f039790 | 947 | static int csio_probe_one(struct pci_dev *pdev, const struct pci_device_id *id) |
a3667aae NKI |
948 | { |
949 | int rv; | |
950 | int bars; | |
951 | int i; | |
952 | struct csio_hw *hw; | |
953 | struct csio_lnode *ln; | |
954 | ||
3fedeab1 HS |
955 | /* probe only T5 cards */ |
956 | if (!csio_is_t5((pdev->device & CSIO_HW_CHIP_MASK))) | |
957 | return -ENODEV; | |
958 | ||
a3667aae NKI |
959 | rv = csio_pci_init(pdev, &bars); |
960 | if (rv) | |
961 | goto err; | |
962 | ||
963 | hw = csio_hw_alloc(pdev); | |
964 | if (!hw) { | |
965 | rv = -ENODEV; | |
966 | goto err_pci_exit; | |
967 | } | |
968 | ||
969 | pci_set_drvdata(pdev, hw); | |
970 | ||
971 | if (csio_hw_start(hw) != 0) { | |
972 | dev_err(&pdev->dev, | |
973 | "Failed to start FW, continuing in debug mode.\n"); | |
974 | return 0; | |
975 | } | |
976 | ||
977 | sprintf(hw->fwrev_str, "%u.%u.%u.%u\n", | |
b2e1a3f0 HS |
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)); | |
a3667aae NKI |
982 | |
983 | for (i = 0; i < hw->num_pports; i++) { | |
984 | ln = csio_shost_init(hw, &pdev->dev, 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(&hw->lock); | |
993 | if (csio_lnode_start(ln) != 0) | |
994 | rv = -ENODEV; | |
995 | spin_unlock_irq(&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(&hw->lock); | |
1011 | csio_hw_stop(hw); | |
1012 | spin_unlock_irq(&hw->lock); | |
1013 | csio_lnodes_unblock_request(hw); | |
a3667aae NKI |
1014 | csio_lnodes_exit(hw, 0); |
1015 | csio_hw_free(hw); | |
1016 | err_pci_exit: | |
1017 | csio_pci_exit(pdev, &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 | */ | |
6f039790 | 1029 | static void csio_remove_one(struct pci_dev *pdev) |
a3667aae NKI |
1030 | { |
1031 | struct csio_hw *hw = pci_get_drvdata(pdev); | |
1032 | int bars = pci_select_bars(pdev, IORESOURCE_MEM); | |
1033 | ||
1034 | csio_lnodes_block_request(hw); | |
1035 | spin_lock_irq(&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(&hw->lock); | |
1043 | csio_lnodes_unblock_request(hw); | |
1044 | ||
1045 | csio_lnodes_exit(hw, 0); | |
1046 | csio_hw_free(hw); | |
a3667aae NKI |
1047 | csio_pci_exit(pdev, &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(&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(&hw->sm, CSIO_HWE_PCIERR_DETECTED); | |
1068 | spin_unlock_irq(&hw->lock); | |
1069 | csio_lnodes_unblock_request(hw); | |
1070 | csio_lnodes_exit(hw, 0); | |
1071 | csio_intr_disable(hw, true); | |
1072 | pci_disable_device(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(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(pdev); | |
1094 | pci_restore_state(pdev); | |
1095 | pci_save_state(pdev); | |
1096 | pci_cleanup_aer_uncorrect_error_status(pdev); | |
1097 | ||
1098 | /* Bring HW s/m to ready state. | |
1099 | * but don't resume IOs. | |
1100 | */ | |
1101 | spin_lock_irq(&hw->lock); | |
1102 | csio_post_event(&hw->sm, CSIO_HWE_PCIERR_SLOT_RESET); | |
1103 | ready = csio_is_hw_ready(hw); | |
1104 | spin_unlock_irq(&hw->lock); | |
1105 | ||
1106 | if (ready) { | |
1107 | return PCI_ERS_RESULT_RECOVERED; | |
1108 | } else { | |
1109 | dev_err(&pdev->dev, "Can't initialize HW when in slot reset\n"); | |
1110 | return PCI_ERS_RESULT_DISCONNECT; | |
1111 | } | |
1112 | } | |
1113 | ||
1114 | /* | |
1115 | * csio_pci_resume - Resume normal operations | |
1116 | * @pdev: PCI device | |
1117 | * | |
1118 | */ | |
1119 | static void | |
1120 | csio_pci_resume(struct pci_dev *pdev) | |
1121 | { | |
1122 | struct csio_hw *hw = pci_get_drvdata(pdev); | |
1123 | struct csio_lnode *ln; | |
1124 | int rv = 0; | |
1125 | int i; | |
1126 | ||
1127 | /* Bring the LINK UP and Resume IO */ | |
1128 | ||
1129 | for (i = 0; i < hw->num_pports; i++) { | |
1130 | ln = csio_shost_init(hw, &pdev->dev, true, NULL); | |
1131 | if (!ln) { | |
1132 | rv = -ENODEV; | |
1133 | break; | |
1134 | } | |
1135 | /* Initialize portid */ | |
1136 | ln->portid = hw->pport[i].portid; | |
1137 | ||
1138 | spin_lock_irq(&hw->lock); | |
1139 | if (csio_lnode_start(ln) != 0) | |
1140 | rv = -ENODEV; | |
1141 | spin_unlock_irq(&hw->lock); | |
1142 | ||
1143 | if (rv) | |
1144 | break; | |
1145 | ||
1146 | csio_lnode_init_post(ln); | |
1147 | } | |
1148 | ||
1149 | if (rv) | |
1150 | goto err_resume_exit; | |
1151 | ||
1152 | return; | |
1153 | ||
1154 | err_resume_exit: | |
1155 | csio_lnodes_block_request(hw); | |
1156 | spin_lock_irq(&hw->lock); | |
1157 | csio_hw_stop(hw); | |
1158 | spin_unlock_irq(&hw->lock); | |
1159 | csio_lnodes_unblock_request(hw); | |
1160 | csio_lnodes_exit(hw, 0); | |
1161 | csio_hw_free(hw); | |
1162 | dev_err(&pdev->dev, "resume of device failed: %d\n", rv); | |
1163 | } | |
1164 | ||
1165 | static struct pci_error_handlers csio_err_handler = { | |
1166 | .error_detected = csio_pci_error_detected, | |
1167 | .slot_reset = csio_pci_slot_reset, | |
1168 | .resume = csio_pci_resume, | |
1169 | }; | |
1170 | ||
3fedeab1 HS |
1171 | /* |
1172 | * Macros needed to support the PCI Device ID Table ... | |
1173 | */ | |
1174 | #define CH_PCI_DEVICE_ID_TABLE_DEFINE_BEGIN \ | |
768ffc66 | 1175 | static const struct pci_device_id csio_pci_tbl[] = { |
3fb4c22e PM |
1176 | /* Define for FCoE uses PF6 */ |
1177 | #define CH_PCI_DEVICE_ID_FUNCTION 0x6 | |
3fedeab1 HS |
1178 | |
1179 | #define CH_PCI_ID_TABLE_ENTRY(devid) \ | |
1180 | { PCI_VDEVICE(CHELSIO, (devid)), 0 } | |
1181 | ||
1182 | #define CH_PCI_DEVICE_ID_TABLE_DEFINE_END { 0, } } | |
a3667aae | 1183 | |
3fedeab1 | 1184 | #include "t4_pci_id_tbl.h" |
a3667aae NKI |
1185 | |
1186 | static struct pci_driver csio_pci_driver = { | |
1187 | .name = KBUILD_MODNAME, | |
1188 | .driver = { | |
1189 | .owner = THIS_MODULE, | |
1190 | }, | |
1191 | .id_table = csio_pci_tbl, | |
1192 | .probe = csio_probe_one, | |
1193 | .remove = csio_remove_one, | |
1194 | .err_handler = &csio_err_handler, | |
1195 | }; | |
1196 | ||
1197 | /* | |
1198 | * csio_init - Chelsio storage driver initialization function. | |
1199 | * | |
1200 | */ | |
1201 | static int __init | |
1202 | csio_init(void) | |
1203 | { | |
1204 | int rv = -ENOMEM; | |
1205 | ||
1206 | pr_info("%s %s\n", CSIO_DRV_DESC, CSIO_DRV_VERSION); | |
1207 | ||
1208 | csio_dfs_init(); | |
1209 | ||
1210 | csio_fcoe_transport = fc_attach_transport(&csio_fc_transport_funcs); | |
1211 | if (!csio_fcoe_transport) | |
1212 | goto err; | |
1213 | ||
1214 | csio_fcoe_transport_vport = | |
1215 | fc_attach_transport(&csio_fc_transport_vport_funcs); | |
1216 | if (!csio_fcoe_transport_vport) | |
1217 | goto err_vport; | |
1218 | ||
1219 | rv = pci_register_driver(&csio_pci_driver); | |
1220 | if (rv) | |
1221 | goto err_pci; | |
1222 | ||
1223 | return 0; | |
1224 | ||
1225 | err_pci: | |
1226 | fc_release_transport(csio_fcoe_transport_vport); | |
1227 | err_vport: | |
1228 | fc_release_transport(csio_fcoe_transport); | |
1229 | err: | |
1230 | csio_dfs_exit(); | |
1231 | return rv; | |
1232 | } | |
1233 | ||
1234 | /* | |
1235 | * csio_exit - Chelsio storage driver uninitialization . | |
1236 | * | |
1237 | * Function that gets called in the unload path. | |
1238 | */ | |
1239 | static void __exit | |
1240 | csio_exit(void) | |
1241 | { | |
1242 | pci_unregister_driver(&csio_pci_driver); | |
1243 | csio_dfs_exit(); | |
1244 | fc_release_transport(csio_fcoe_transport_vport); | |
1245 | fc_release_transport(csio_fcoe_transport); | |
1246 | } | |
1247 | ||
1248 | module_init(csio_init); | |
1249 | module_exit(csio_exit); | |
1250 | MODULE_AUTHOR(CSIO_DRV_AUTHOR); | |
1251 | MODULE_DESCRIPTION(CSIO_DRV_DESC); | |
1252 | MODULE_LICENSE(CSIO_DRV_LICENSE); | |
1253 | MODULE_DEVICE_TABLE(pci, csio_pci_tbl); | |
1254 | MODULE_VERSION(CSIO_DRV_VERSION); | |
7cc16380 | 1255 | MODULE_FIRMWARE(FW_FNAME_T5); |