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5df6d737 AJ |
1 | /* |
2 | * Copyright 2008 Cisco Systems, Inc. All rights reserved. | |
3 | * Copyright 2007 Nuova Systems, Inc. All rights reserved. | |
4 | * | |
5 | * This program is free software; you may redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; version 2 of the License. | |
8 | * | |
9 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, | |
10 | * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
11 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND | |
12 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS | |
13 | * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN | |
14 | * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN | |
15 | * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE | |
16 | * SOFTWARE. | |
17 | */ | |
18 | #include <linux/mempool.h> | |
19 | #include <linux/errno.h> | |
20 | #include <linux/init.h> | |
21 | #include <linux/workqueue.h> | |
22 | #include <linux/pci.h> | |
23 | #include <linux/scatterlist.h> | |
24 | #include <linux/skbuff.h> | |
25 | #include <linux/spinlock.h> | |
26 | #include <linux/if_ether.h> | |
27 | #include <linux/if_vlan.h> | |
28 | #include <linux/delay.h> | |
5a0e3ad6 | 29 | #include <linux/gfp.h> |
5df6d737 AJ |
30 | #include <scsi/scsi.h> |
31 | #include <scsi/scsi_host.h> | |
32 | #include <scsi/scsi_device.h> | |
33 | #include <scsi/scsi_cmnd.h> | |
34 | #include <scsi/scsi_tcq.h> | |
35 | #include <scsi/fc/fc_els.h> | |
36 | #include <scsi/fc/fc_fcoe.h> | |
37 | #include <scsi/libfc.h> | |
38 | #include <scsi/fc_frame.h> | |
39 | #include "fnic_io.h" | |
40 | #include "fnic.h" | |
41 | ||
42 | const char *fnic_state_str[] = { | |
43 | [FNIC_IN_FC_MODE] = "FNIC_IN_FC_MODE", | |
44 | [FNIC_IN_FC_TRANS_ETH_MODE] = "FNIC_IN_FC_TRANS_ETH_MODE", | |
45 | [FNIC_IN_ETH_MODE] = "FNIC_IN_ETH_MODE", | |
46 | [FNIC_IN_ETH_TRANS_FC_MODE] = "FNIC_IN_ETH_TRANS_FC_MODE", | |
47 | }; | |
48 | ||
49 | static const char *fnic_ioreq_state_str[] = { | |
14eb5d90 | 50 | [FNIC_IOREQ_NOT_INITED] = "FNIC_IOREQ_NOT_INITED", |
5df6d737 AJ |
51 | [FNIC_IOREQ_CMD_PENDING] = "FNIC_IOREQ_CMD_PENDING", |
52 | [FNIC_IOREQ_ABTS_PENDING] = "FNIC_IOREQ_ABTS_PENDING", | |
53 | [FNIC_IOREQ_ABTS_COMPLETE] = "FNIC_IOREQ_ABTS_COMPLETE", | |
54 | [FNIC_IOREQ_CMD_COMPLETE] = "FNIC_IOREQ_CMD_COMPLETE", | |
55 | }; | |
56 | ||
57 | static const char *fcpio_status_str[] = { | |
58 | [FCPIO_SUCCESS] = "FCPIO_SUCCESS", /*0x0*/ | |
59 | [FCPIO_INVALID_HEADER] = "FCPIO_INVALID_HEADER", | |
60 | [FCPIO_OUT_OF_RESOURCE] = "FCPIO_OUT_OF_RESOURCE", | |
61 | [FCPIO_INVALID_PARAM] = "FCPIO_INVALID_PARAM]", | |
62 | [FCPIO_REQ_NOT_SUPPORTED] = "FCPIO_REQ_NOT_SUPPORTED", | |
63 | [FCPIO_IO_NOT_FOUND] = "FCPIO_IO_NOT_FOUND", | |
64 | [FCPIO_ABORTED] = "FCPIO_ABORTED", /*0x41*/ | |
65 | [FCPIO_TIMEOUT] = "FCPIO_TIMEOUT", | |
66 | [FCPIO_SGL_INVALID] = "FCPIO_SGL_INVALID", | |
67 | [FCPIO_MSS_INVALID] = "FCPIO_MSS_INVALID", | |
68 | [FCPIO_DATA_CNT_MISMATCH] = "FCPIO_DATA_CNT_MISMATCH", | |
69 | [FCPIO_FW_ERR] = "FCPIO_FW_ERR", | |
70 | [FCPIO_ITMF_REJECTED] = "FCPIO_ITMF_REJECTED", | |
71 | [FCPIO_ITMF_FAILED] = "FCPIO_ITMF_FAILED", | |
72 | [FCPIO_ITMF_INCORRECT_LUN] = "FCPIO_ITMF_INCORRECT_LUN", | |
73 | [FCPIO_CMND_REJECTED] = "FCPIO_CMND_REJECTED", | |
74 | [FCPIO_NO_PATH_AVAIL] = "FCPIO_NO_PATH_AVAIL", | |
75 | [FCPIO_PATH_FAILED] = "FCPIO_PATH_FAILED", | |
76 | [FCPIO_LUNMAP_CHNG_PEND] = "FCPIO_LUNHMAP_CHNG_PEND", | |
77 | }; | |
78 | ||
79 | const char *fnic_state_to_str(unsigned int state) | |
80 | { | |
81 | if (state >= ARRAY_SIZE(fnic_state_str) || !fnic_state_str[state]) | |
82 | return "unknown"; | |
83 | ||
84 | return fnic_state_str[state]; | |
85 | } | |
86 | ||
87 | static const char *fnic_ioreq_state_to_str(unsigned int state) | |
88 | { | |
89 | if (state >= ARRAY_SIZE(fnic_ioreq_state_str) || | |
90 | !fnic_ioreq_state_str[state]) | |
91 | return "unknown"; | |
92 | ||
93 | return fnic_ioreq_state_str[state]; | |
94 | } | |
95 | ||
96 | static const char *fnic_fcpio_status_to_str(unsigned int status) | |
97 | { | |
98 | if (status >= ARRAY_SIZE(fcpio_status_str) || !fcpio_status_str[status]) | |
99 | return "unknown"; | |
100 | ||
101 | return fcpio_status_str[status]; | |
102 | } | |
103 | ||
104 | static void fnic_cleanup_io(struct fnic *fnic, int exclude_id); | |
105 | ||
106 | static inline spinlock_t *fnic_io_lock_hash(struct fnic *fnic, | |
107 | struct scsi_cmnd *sc) | |
108 | { | |
109 | u32 hash = sc->request->tag & (FNIC_IO_LOCKS - 1); | |
110 | ||
111 | return &fnic->io_req_lock[hash]; | |
112 | } | |
113 | ||
1259c5dc SB |
114 | static inline spinlock_t *fnic_io_lock_tag(struct fnic *fnic, |
115 | int tag) | |
116 | { | |
117 | return &fnic->io_req_lock[tag & (FNIC_IO_LOCKS - 1)]; | |
118 | } | |
119 | ||
5df6d737 AJ |
120 | /* |
121 | * Unmap the data buffer and sense buffer for an io_req, | |
122 | * also unmap and free the device-private scatter/gather list. | |
123 | */ | |
124 | static void fnic_release_ioreq_buf(struct fnic *fnic, | |
125 | struct fnic_io_req *io_req, | |
126 | struct scsi_cmnd *sc) | |
127 | { | |
128 | if (io_req->sgl_list_pa) | |
129 | pci_unmap_single(fnic->pdev, io_req->sgl_list_pa, | |
130 | sizeof(io_req->sgl_list[0]) * io_req->sgl_cnt, | |
131 | PCI_DMA_TODEVICE); | |
132 | scsi_dma_unmap(sc); | |
133 | ||
134 | if (io_req->sgl_cnt) | |
135 | mempool_free(io_req->sgl_list_alloc, | |
136 | fnic->io_sgl_pool[io_req->sgl_type]); | |
137 | if (io_req->sense_buf_pa) | |
138 | pci_unmap_single(fnic->pdev, io_req->sense_buf_pa, | |
139 | SCSI_SENSE_BUFFERSIZE, PCI_DMA_FROMDEVICE); | |
140 | } | |
141 | ||
142 | /* Free up Copy Wq descriptors. Called with copy_wq lock held */ | |
143 | static int free_wq_copy_descs(struct fnic *fnic, struct vnic_wq_copy *wq) | |
144 | { | |
145 | /* if no Ack received from firmware, then nothing to clean */ | |
146 | if (!fnic->fw_ack_recd[0]) | |
147 | return 1; | |
148 | ||
149 | /* | |
150 | * Update desc_available count based on number of freed descriptors | |
151 | * Account for wraparound | |
152 | */ | |
153 | if (wq->to_clean_index <= fnic->fw_ack_index[0]) | |
154 | wq->ring.desc_avail += (fnic->fw_ack_index[0] | |
155 | - wq->to_clean_index + 1); | |
156 | else | |
157 | wq->ring.desc_avail += (wq->ring.desc_count | |
158 | - wq->to_clean_index | |
159 | + fnic->fw_ack_index[0] + 1); | |
160 | ||
161 | /* | |
162 | * just bump clean index to ack_index+1 accounting for wraparound | |
163 | * this will essentially free up all descriptors between | |
164 | * to_clean_index and fw_ack_index, both inclusive | |
165 | */ | |
166 | wq->to_clean_index = | |
167 | (fnic->fw_ack_index[0] + 1) % wq->ring.desc_count; | |
168 | ||
169 | /* we have processed the acks received so far */ | |
170 | fnic->fw_ack_recd[0] = 0; | |
171 | return 0; | |
172 | } | |
173 | ||
174 | ||
03298552 HP |
175 | /** |
176 | * __fnic_set_state_flags | |
177 | * Sets/Clears bits in fnic's state_flags | |
178 | **/ | |
179 | void | |
180 | __fnic_set_state_flags(struct fnic *fnic, unsigned long st_flags, | |
181 | unsigned long clearbits) | |
182 | { | |
183 | struct Scsi_Host *host = fnic->lport->host; | |
184 | int sh_locked = spin_is_locked(host->host_lock); | |
185 | unsigned long flags = 0; | |
186 | ||
187 | if (!sh_locked) | |
188 | spin_lock_irqsave(host->host_lock, flags); | |
189 | ||
190 | if (clearbits) | |
191 | fnic->state_flags &= ~st_flags; | |
192 | else | |
193 | fnic->state_flags |= st_flags; | |
194 | ||
195 | if (!sh_locked) | |
196 | spin_unlock_irqrestore(host->host_lock, flags); | |
197 | ||
198 | return; | |
199 | } | |
200 | ||
201 | ||
5df6d737 AJ |
202 | /* |
203 | * fnic_fw_reset_handler | |
204 | * Routine to send reset msg to fw | |
205 | */ | |
206 | int fnic_fw_reset_handler(struct fnic *fnic) | |
207 | { | |
208 | struct vnic_wq_copy *wq = &fnic->wq_copy[0]; | |
209 | int ret = 0; | |
210 | unsigned long flags; | |
211 | ||
03298552 HP |
212 | /* indicate fwreset to io path */ |
213 | fnic_set_state_flags(fnic, FNIC_FLAGS_FWRESET); | |
214 | ||
78112e55 JE |
215 | skb_queue_purge(&fnic->frame_queue); |
216 | skb_queue_purge(&fnic->tx_queue); | |
217 | ||
03298552 HP |
218 | /* wait for io cmpl */ |
219 | while (atomic_read(&fnic->in_flight)) | |
220 | schedule_timeout(msecs_to_jiffies(1)); | |
221 | ||
5df6d737 AJ |
222 | spin_lock_irqsave(&fnic->wq_copy_lock[0], flags); |
223 | ||
224 | if (vnic_wq_copy_desc_avail(wq) <= fnic->wq_copy_desc_low[0]) | |
225 | free_wq_copy_descs(fnic, wq); | |
226 | ||
227 | if (!vnic_wq_copy_desc_avail(wq)) | |
228 | ret = -EAGAIN; | |
67125b02 | 229 | else { |
5df6d737 | 230 | fnic_queue_wq_copy_desc_fw_reset(wq, SCSI_NO_TAG); |
67125b02 HP |
231 | atomic64_inc(&fnic->fnic_stats.fw_stats.active_fw_reqs); |
232 | if (atomic64_read(&fnic->fnic_stats.fw_stats.active_fw_reqs) > | |
233 | atomic64_read(&fnic->fnic_stats.fw_stats.max_fw_reqs)) | |
234 | atomic64_set(&fnic->fnic_stats.fw_stats.max_fw_reqs, | |
235 | atomic64_read( | |
236 | &fnic->fnic_stats.fw_stats.active_fw_reqs)); | |
237 | } | |
5df6d737 AJ |
238 | |
239 | spin_unlock_irqrestore(&fnic->wq_copy_lock[0], flags); | |
240 | ||
67125b02 HP |
241 | if (!ret) { |
242 | atomic64_inc(&fnic->fnic_stats.reset_stats.fw_resets); | |
5df6d737 AJ |
243 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
244 | "Issued fw reset\n"); | |
67125b02 | 245 | } else { |
03298552 | 246 | fnic_clear_state_flags(fnic, FNIC_FLAGS_FWRESET); |
5df6d737 AJ |
247 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
248 | "Failed to issue fw reset\n"); | |
03298552 HP |
249 | } |
250 | ||
5df6d737 AJ |
251 | return ret; |
252 | } | |
253 | ||
254 | ||
255 | /* | |
256 | * fnic_flogi_reg_handler | |
257 | * Routine to send flogi register msg to fw | |
258 | */ | |
78112e55 | 259 | int fnic_flogi_reg_handler(struct fnic *fnic, u32 fc_id) |
5df6d737 AJ |
260 | { |
261 | struct vnic_wq_copy *wq = &fnic->wq_copy[0]; | |
78112e55 JE |
262 | enum fcpio_flogi_reg_format_type format; |
263 | struct fc_lport *lp = fnic->lport; | |
5df6d737 AJ |
264 | u8 gw_mac[ETH_ALEN]; |
265 | int ret = 0; | |
266 | unsigned long flags; | |
267 | ||
268 | spin_lock_irqsave(&fnic->wq_copy_lock[0], flags); | |
269 | ||
270 | if (vnic_wq_copy_desc_avail(wq) <= fnic->wq_copy_desc_low[0]) | |
271 | free_wq_copy_descs(fnic, wq); | |
272 | ||
273 | if (!vnic_wq_copy_desc_avail(wq)) { | |
274 | ret = -EAGAIN; | |
275 | goto flogi_reg_ioreq_end; | |
276 | } | |
277 | ||
78112e55 | 278 | if (fnic->ctlr.map_dest) { |
5df6d737 | 279 | memset(gw_mac, 0xff, ETH_ALEN); |
78112e55 JE |
280 | format = FCPIO_FLOGI_REG_DEF_DEST; |
281 | } else { | |
282 | memcpy(gw_mac, fnic->ctlr.dest_addr, ETH_ALEN); | |
283 | format = FCPIO_FLOGI_REG_GW_DEST; | |
284 | } | |
5df6d737 | 285 | |
78112e55 JE |
286 | if ((fnic->config.flags & VFCF_FIP_CAPABLE) && !fnic->ctlr.map_dest) { |
287 | fnic_queue_wq_copy_desc_fip_reg(wq, SCSI_NO_TAG, | |
288 | fc_id, gw_mac, | |
289 | fnic->data_src_addr, | |
290 | lp->r_a_tov, lp->e_d_tov); | |
291 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
292 | "FLOGI FIP reg issued fcid %x src %pM dest %pM\n", | |
293 | fc_id, fnic->data_src_addr, gw_mac); | |
294 | } else { | |
295 | fnic_queue_wq_copy_desc_flogi_reg(wq, SCSI_NO_TAG, | |
296 | format, fc_id, gw_mac); | |
297 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
298 | "FLOGI reg issued fcid %x map %d dest %pM\n", | |
299 | fc_id, fnic->ctlr.map_dest, gw_mac); | |
300 | } | |
5df6d737 | 301 | |
67125b02 HP |
302 | atomic64_inc(&fnic->fnic_stats.fw_stats.active_fw_reqs); |
303 | if (atomic64_read(&fnic->fnic_stats.fw_stats.active_fw_reqs) > | |
304 | atomic64_read(&fnic->fnic_stats.fw_stats.max_fw_reqs)) | |
305 | atomic64_set(&fnic->fnic_stats.fw_stats.max_fw_reqs, | |
306 | atomic64_read(&fnic->fnic_stats.fw_stats.active_fw_reqs)); | |
307 | ||
5df6d737 AJ |
308 | flogi_reg_ioreq_end: |
309 | spin_unlock_irqrestore(&fnic->wq_copy_lock[0], flags); | |
5df6d737 AJ |
310 | return ret; |
311 | } | |
312 | ||
313 | /* | |
314 | * fnic_queue_wq_copy_desc | |
315 | * Routine to enqueue a wq copy desc | |
316 | */ | |
317 | static inline int fnic_queue_wq_copy_desc(struct fnic *fnic, | |
318 | struct vnic_wq_copy *wq, | |
319 | struct fnic_io_req *io_req, | |
320 | struct scsi_cmnd *sc, | |
87a2d34b | 321 | int sg_count) |
5df6d737 AJ |
322 | { |
323 | struct scatterlist *sg; | |
324 | struct fc_rport *rport = starget_to_rport(scsi_target(sc->device)); | |
325 | struct fc_rport_libfc_priv *rp = rport->dd_data; | |
326 | struct host_sg_desc *desc; | |
67125b02 | 327 | struct misc_stats *misc_stats = &fnic->fnic_stats.misc_stats; |
5df6d737 AJ |
328 | unsigned int i; |
329 | unsigned long intr_flags; | |
330 | int flags; | |
331 | u8 exch_flags; | |
332 | struct scsi_lun fc_lun; | |
fd6ddfa4 | 333 | int r; |
5df6d737 AJ |
334 | |
335 | if (sg_count) { | |
5df6d737 AJ |
336 | /* For each SGE, create a device desc entry */ |
337 | desc = io_req->sgl_list; | |
338 | for_each_sg(scsi_sglist(sc), sg, sg_count, i) { | |
339 | desc->addr = cpu_to_le64(sg_dma_address(sg)); | |
340 | desc->len = cpu_to_le32(sg_dma_len(sg)); | |
341 | desc->_resvd = 0; | |
342 | desc++; | |
343 | } | |
344 | ||
345 | io_req->sgl_list_pa = pci_map_single | |
346 | (fnic->pdev, | |
347 | io_req->sgl_list, | |
348 | sizeof(io_req->sgl_list[0]) * sg_count, | |
349 | PCI_DMA_TODEVICE); | |
fd6ddfa4 ML |
350 | |
351 | r = pci_dma_mapping_error(fnic->pdev, io_req->sgl_list_pa); | |
352 | if (r) { | |
353 | printk(KERN_ERR "PCI mapping failed with error %d\n", r); | |
354 | return SCSI_MLQUEUE_HOST_BUSY; | |
355 | } | |
5df6d737 AJ |
356 | } |
357 | ||
358 | io_req->sense_buf_pa = pci_map_single(fnic->pdev, | |
359 | sc->sense_buffer, | |
360 | SCSI_SENSE_BUFFERSIZE, | |
361 | PCI_DMA_FROMDEVICE); | |
362 | ||
fd6ddfa4 ML |
363 | r = pci_dma_mapping_error(fnic->pdev, io_req->sense_buf_pa); |
364 | if (r) { | |
365 | pci_unmap_single(fnic->pdev, io_req->sgl_list_pa, | |
366 | sizeof(io_req->sgl_list[0]) * sg_count, | |
367 | PCI_DMA_TODEVICE); | |
368 | printk(KERN_ERR "PCI mapping failed with error %d\n", r); | |
369 | return SCSI_MLQUEUE_HOST_BUSY; | |
370 | } | |
371 | ||
5df6d737 AJ |
372 | int_to_scsilun(sc->device->lun, &fc_lun); |
373 | ||
5df6d737 AJ |
374 | /* Enqueue the descriptor in the Copy WQ */ |
375 | spin_lock_irqsave(&fnic->wq_copy_lock[0], intr_flags); | |
376 | ||
377 | if (vnic_wq_copy_desc_avail(wq) <= fnic->wq_copy_desc_low[0]) | |
378 | free_wq_copy_descs(fnic, wq); | |
379 | ||
380 | if (unlikely(!vnic_wq_copy_desc_avail(wq))) { | |
381 | spin_unlock_irqrestore(&fnic->wq_copy_lock[0], intr_flags); | |
14eb5d90 HP |
382 | FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host, |
383 | "fnic_queue_wq_copy_desc failure - no descriptors\n"); | |
67125b02 | 384 | atomic64_inc(&misc_stats->io_cpwq_alloc_failures); |
5df6d737 AJ |
385 | return SCSI_MLQUEUE_HOST_BUSY; |
386 | } | |
387 | ||
388 | flags = 0; | |
389 | if (sc->sc_data_direction == DMA_FROM_DEVICE) | |
390 | flags = FCPIO_ICMND_RDDATA; | |
391 | else if (sc->sc_data_direction == DMA_TO_DEVICE) | |
392 | flags = FCPIO_ICMND_WRDATA; | |
393 | ||
394 | exch_flags = 0; | |
395 | if ((fnic->config.flags & VFCF_FCP_SEQ_LVL_ERR) && | |
396 | (rp->flags & FC_RP_FLAGS_RETRY)) | |
397 | exch_flags |= FCPIO_ICMND_SRFLAG_RETRY; | |
398 | ||
399 | fnic_queue_wq_copy_desc_icmnd_16(wq, sc->request->tag, | |
400 | 0, exch_flags, io_req->sgl_cnt, | |
401 | SCSI_SENSE_BUFFERSIZE, | |
402 | io_req->sgl_list_pa, | |
403 | io_req->sense_buf_pa, | |
404 | 0, /* scsi cmd ref, always 0 */ | |
50668633 CH |
405 | FCPIO_ICMND_PTA_SIMPLE, |
406 | /* scsi pri and tag */ | |
5df6d737 | 407 | flags, /* command flags */ |
4b53662b AJ |
408 | sc->cmnd, sc->cmd_len, |
409 | scsi_bufflen(sc), | |
5df6d737 AJ |
410 | fc_lun.scsi_lun, io_req->port_id, |
411 | rport->maxframe_size, rp->r_a_tov, | |
412 | rp->e_d_tov); | |
413 | ||
67125b02 HP |
414 | atomic64_inc(&fnic->fnic_stats.fw_stats.active_fw_reqs); |
415 | if (atomic64_read(&fnic->fnic_stats.fw_stats.active_fw_reqs) > | |
416 | atomic64_read(&fnic->fnic_stats.fw_stats.max_fw_reqs)) | |
417 | atomic64_set(&fnic->fnic_stats.fw_stats.max_fw_reqs, | |
418 | atomic64_read(&fnic->fnic_stats.fw_stats.active_fw_reqs)); | |
419 | ||
5df6d737 AJ |
420 | spin_unlock_irqrestore(&fnic->wq_copy_lock[0], intr_flags); |
421 | return 0; | |
422 | } | |
423 | ||
424 | /* | |
425 | * fnic_queuecommand | |
426 | * Routine to send a scsi cdb | |
427 | * Called with host_lock held and interrupts disabled. | |
428 | */ | |
f281233d | 429 | static int fnic_queuecommand_lck(struct scsi_cmnd *sc, void (*done)(struct scsi_cmnd *)) |
5df6d737 | 430 | { |
03298552 | 431 | struct fc_lport *lp = shost_priv(sc->device->host); |
5df6d737 | 432 | struct fc_rport *rport; |
4d7007b4 | 433 | struct fnic_io_req *io_req = NULL; |
03298552 | 434 | struct fnic *fnic = lport_priv(lp); |
67125b02 | 435 | struct fnic_stats *fnic_stats = &fnic->fnic_stats; |
5df6d737 AJ |
436 | struct vnic_wq_copy *wq; |
437 | int ret; | |
4d7007b4 HP |
438 | u64 cmd_trace; |
439 | int sg_count = 0; | |
41df7b02 | 440 | unsigned long flags = 0; |
5df6d737 | 441 | unsigned long ptr; |
41df7b02 | 442 | spinlock_t *io_lock = NULL; |
db196935 | 443 | int io_lock_acquired = 0; |
6008e96b | 444 | struct fc_rport_libfc_priv *rp; |
5df6d737 | 445 | |
03298552 HP |
446 | if (unlikely(fnic_chk_state_flags_locked(fnic, FNIC_FLAGS_IO_BLOCKED))) |
447 | return SCSI_MLQUEUE_HOST_BUSY; | |
448 | ||
5df6d737 | 449 | rport = starget_to_rport(scsi_target(sc->device)); |
6008e96b SK |
450 | if (!rport) { |
451 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
452 | "returning DID_NO_CONNECT for IO as rport is NULL\n"); | |
453 | sc->result = DID_NO_CONNECT << 16; | |
454 | done(sc); | |
455 | return 0; | |
456 | } | |
457 | ||
5df6d737 AJ |
458 | ret = fc_remote_port_chkready(rport); |
459 | if (ret) { | |
6008e96b SK |
460 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
461 | "rport is not ready\n"); | |
67125b02 | 462 | atomic64_inc(&fnic_stats->misc_stats.rport_not_ready); |
5df6d737 AJ |
463 | sc->result = ret; |
464 | done(sc); | |
465 | return 0; | |
466 | } | |
467 | ||
6008e96b SK |
468 | rp = rport->dd_data; |
469 | if (!rp || rp->rp_state != RPORT_ST_READY) { | |
470 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
1b6ac5e3 | 471 | "returning DID_NO_CONNECT for IO as rport is removed\n"); |
6008e96b SK |
472 | atomic64_inc(&fnic_stats->misc_stats.rport_not_ready); |
473 | sc->result = DID_NO_CONNECT<<16; | |
474 | done(sc); | |
475 | return 0; | |
35061e21 HS |
476 | } |
477 | ||
5df6d737 AJ |
478 | if (lp->state != LPORT_ST_READY || !(lp->link_up)) |
479 | return SCSI_MLQUEUE_HOST_BUSY; | |
480 | ||
03298552 HP |
481 | atomic_inc(&fnic->in_flight); |
482 | ||
5df6d737 AJ |
483 | /* |
484 | * Release host lock, use driver resource specific locks from here. | |
485 | * Don't re-enable interrupts in case they were disabled prior to the | |
486 | * caller disabling them. | |
487 | */ | |
488 | spin_unlock(lp->host->host_lock); | |
14eb5d90 HP |
489 | CMD_STATE(sc) = FNIC_IOREQ_NOT_INITED; |
490 | CMD_FLAGS(sc) = FNIC_NO_FLAGS; | |
5df6d737 AJ |
491 | |
492 | /* Get a new io_req for this SCSI IO */ | |
5df6d737 AJ |
493 | io_req = mempool_alloc(fnic->io_req_pool, GFP_ATOMIC); |
494 | if (!io_req) { | |
67125b02 | 495 | atomic64_inc(&fnic_stats->io_stats.alloc_failures); |
5df6d737 AJ |
496 | ret = SCSI_MLQUEUE_HOST_BUSY; |
497 | goto out; | |
498 | } | |
499 | memset(io_req, 0, sizeof(*io_req)); | |
500 | ||
501 | /* Map the data buffer */ | |
502 | sg_count = scsi_dma_map(sc); | |
503 | if (sg_count < 0) { | |
4d7007b4 HP |
504 | FNIC_TRACE(fnic_queuecommand, sc->device->host->host_no, |
505 | sc->request->tag, sc, 0, sc->cmnd[0], | |
506 | sg_count, CMD_STATE(sc)); | |
5df6d737 AJ |
507 | mempool_free(io_req, fnic->io_req_pool); |
508 | goto out; | |
509 | } | |
510 | ||
511 | /* Determine the type of scatter/gather list we need */ | |
512 | io_req->sgl_cnt = sg_count; | |
513 | io_req->sgl_type = FNIC_SGL_CACHE_DFLT; | |
514 | if (sg_count > FNIC_DFLT_SG_DESC_CNT) | |
515 | io_req->sgl_type = FNIC_SGL_CACHE_MAX; | |
516 | ||
517 | if (sg_count) { | |
518 | io_req->sgl_list = | |
519 | mempool_alloc(fnic->io_sgl_pool[io_req->sgl_type], | |
0c79c742 | 520 | GFP_ATOMIC); |
5df6d737 | 521 | if (!io_req->sgl_list) { |
67125b02 | 522 | atomic64_inc(&fnic_stats->io_stats.alloc_failures); |
5df6d737 AJ |
523 | ret = SCSI_MLQUEUE_HOST_BUSY; |
524 | scsi_dma_unmap(sc); | |
525 | mempool_free(io_req, fnic->io_req_pool); | |
526 | goto out; | |
527 | } | |
528 | ||
529 | /* Cache sgl list allocated address before alignment */ | |
530 | io_req->sgl_list_alloc = io_req->sgl_list; | |
531 | ptr = (unsigned long) io_req->sgl_list; | |
532 | if (ptr % FNIC_SG_DESC_ALIGN) { | |
533 | io_req->sgl_list = (struct host_sg_desc *) | |
534 | (((unsigned long) ptr | |
535 | + FNIC_SG_DESC_ALIGN - 1) | |
536 | & ~(FNIC_SG_DESC_ALIGN - 1)); | |
537 | } | |
538 | } | |
539 | ||
41df7b02 HS |
540 | /* |
541 | * Will acquire lock defore setting to IO initialized. | |
542 | */ | |
543 | ||
544 | io_lock = fnic_io_lock_hash(fnic, sc); | |
545 | spin_lock_irqsave(io_lock, flags); | |
546 | ||
5df6d737 | 547 | /* initialize rest of io_req */ |
db196935 | 548 | io_lock_acquired = 1; |
5df6d737 | 549 | io_req->port_id = rport->port_id; |
14eb5d90 | 550 | io_req->start_time = jiffies; |
5df6d737 AJ |
551 | CMD_STATE(sc) = FNIC_IOREQ_CMD_PENDING; |
552 | CMD_SP(sc) = (char *)io_req; | |
14eb5d90 | 553 | CMD_FLAGS(sc) |= FNIC_IO_INITIALIZED; |
5df6d737 AJ |
554 | sc->scsi_done = done; |
555 | ||
556 | /* create copy wq desc and enqueue it */ | |
557 | wq = &fnic->wq_copy[0]; | |
558 | ret = fnic_queue_wq_copy_desc(fnic, wq, io_req, sc, sg_count); | |
559 | if (ret) { | |
560 | /* | |
561 | * In case another thread cancelled the request, | |
562 | * refetch the pointer under the lock. | |
563 | */ | |
4d7007b4 HP |
564 | FNIC_TRACE(fnic_queuecommand, sc->device->host->host_no, |
565 | sc->request->tag, sc, 0, 0, 0, | |
566 | (((u64)CMD_FLAGS(sc) << 32) | CMD_STATE(sc))); | |
5df6d737 AJ |
567 | io_req = (struct fnic_io_req *)CMD_SP(sc); |
568 | CMD_SP(sc) = NULL; | |
569 | CMD_STATE(sc) = FNIC_IOREQ_CMD_COMPLETE; | |
570 | spin_unlock_irqrestore(io_lock, flags); | |
571 | if (io_req) { | |
572 | fnic_release_ioreq_buf(fnic, io_req, sc); | |
573 | mempool_free(io_req, fnic->io_req_pool); | |
574 | } | |
41df7b02 HS |
575 | atomic_dec(&fnic->in_flight); |
576 | /* acquire host lock before returning to SCSI */ | |
577 | spin_lock(lp->host->host_lock); | |
578 | return ret; | |
14eb5d90 | 579 | } else { |
67125b02 HP |
580 | atomic64_inc(&fnic_stats->io_stats.active_ios); |
581 | atomic64_inc(&fnic_stats->io_stats.num_ios); | |
582 | if (atomic64_read(&fnic_stats->io_stats.active_ios) > | |
583 | atomic64_read(&fnic_stats->io_stats.max_active_ios)) | |
584 | atomic64_set(&fnic_stats->io_stats.max_active_ios, | |
585 | atomic64_read(&fnic_stats->io_stats.active_ios)); | |
586 | ||
14eb5d90 HP |
587 | /* REVISIT: Use per IO lock in the final code */ |
588 | CMD_FLAGS(sc) |= FNIC_IO_ISSUED; | |
5df6d737 AJ |
589 | } |
590 | out: | |
4d7007b4 HP |
591 | cmd_trace = ((u64)sc->cmnd[0] << 56 | (u64)sc->cmnd[7] << 40 | |
592 | (u64)sc->cmnd[8] << 32 | (u64)sc->cmnd[2] << 24 | | |
593 | (u64)sc->cmnd[3] << 16 | (u64)sc->cmnd[4] << 8 | | |
594 | sc->cmnd[5]); | |
595 | ||
596 | FNIC_TRACE(fnic_queuecommand, sc->device->host->host_no, | |
597 | sc->request->tag, sc, io_req, | |
598 | sg_count, cmd_trace, | |
599 | (((u64)CMD_FLAGS(sc) >> 32) | CMD_STATE(sc))); | |
41df7b02 HS |
600 | |
601 | /* if only we issued IO, will we have the io lock */ | |
db196935 | 602 | if (io_lock_acquired) |
41df7b02 HS |
603 | spin_unlock_irqrestore(io_lock, flags); |
604 | ||
03298552 | 605 | atomic_dec(&fnic->in_flight); |
5df6d737 AJ |
606 | /* acquire host lock before returning to SCSI */ |
607 | spin_lock(lp->host->host_lock); | |
608 | return ret; | |
609 | } | |
610 | ||
f281233d JG |
611 | DEF_SCSI_QCMD(fnic_queuecommand) |
612 | ||
5df6d737 AJ |
613 | /* |
614 | * fnic_fcpio_fw_reset_cmpl_handler | |
615 | * Routine to handle fw reset completion | |
616 | */ | |
617 | static int fnic_fcpio_fw_reset_cmpl_handler(struct fnic *fnic, | |
618 | struct fcpio_fw_req *desc) | |
619 | { | |
620 | u8 type; | |
621 | u8 hdr_status; | |
622 | struct fcpio_tag tag; | |
623 | int ret = 0; | |
5df6d737 | 624 | unsigned long flags; |
67125b02 | 625 | struct reset_stats *reset_stats = &fnic->fnic_stats.reset_stats; |
5df6d737 AJ |
626 | |
627 | fcpio_header_dec(&desc->hdr, &type, &hdr_status, &tag); | |
628 | ||
67125b02 HP |
629 | atomic64_inc(&reset_stats->fw_reset_completions); |
630 | ||
5df6d737 AJ |
631 | /* Clean up all outstanding io requests */ |
632 | fnic_cleanup_io(fnic, SCSI_NO_TAG); | |
633 | ||
67125b02 HP |
634 | atomic64_set(&fnic->fnic_stats.fw_stats.active_fw_reqs, 0); |
635 | atomic64_set(&fnic->fnic_stats.io_stats.active_ios, 0); | |
1cdf8bc1 | 636 | atomic64_set(&fnic->io_cmpl_skip, 0); |
67125b02 | 637 | |
5df6d737 AJ |
638 | spin_lock_irqsave(&fnic->fnic_lock, flags); |
639 | ||
5df6d737 AJ |
640 | /* fnic should be in FC_TRANS_ETH_MODE */ |
641 | if (fnic->state == FNIC_IN_FC_TRANS_ETH_MODE) { | |
642 | /* Check status of reset completion */ | |
643 | if (!hdr_status) { | |
644 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
645 | "reset cmpl success\n"); | |
646 | /* Ready to send flogi out */ | |
647 | fnic->state = FNIC_IN_ETH_MODE; | |
648 | } else { | |
649 | FNIC_SCSI_DBG(KERN_DEBUG, | |
650 | fnic->lport->host, | |
651 | "fnic fw_reset : failed %s\n", | |
652 | fnic_fcpio_status_to_str(hdr_status)); | |
653 | ||
654 | /* | |
655 | * Unable to change to eth mode, cannot send out flogi | |
656 | * Change state to fc mode, so that subsequent Flogi | |
657 | * requests from libFC will cause more attempts to | |
658 | * reset the firmware. Free the cached flogi | |
659 | */ | |
660 | fnic->state = FNIC_IN_FC_MODE; | |
67125b02 | 661 | atomic64_inc(&reset_stats->fw_reset_failures); |
5df6d737 AJ |
662 | ret = -1; |
663 | } | |
664 | } else { | |
665 | FNIC_SCSI_DBG(KERN_DEBUG, | |
666 | fnic->lport->host, | |
667 | "Unexpected state %s while processing" | |
668 | " reset cmpl\n", fnic_state_to_str(fnic->state)); | |
67125b02 | 669 | atomic64_inc(&reset_stats->fw_reset_failures); |
5df6d737 AJ |
670 | ret = -1; |
671 | } | |
672 | ||
673 | /* Thread removing device blocks till firmware reset is complete */ | |
674 | if (fnic->remove_wait) | |
675 | complete(fnic->remove_wait); | |
676 | ||
677 | /* | |
678 | * If fnic is being removed, or fw reset failed | |
679 | * free the flogi frame. Else, send it out | |
680 | */ | |
681 | if (fnic->remove_wait || ret) { | |
5df6d737 | 682 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); |
78112e55 | 683 | skb_queue_purge(&fnic->tx_queue); |
5df6d737 AJ |
684 | goto reset_cmpl_handler_end; |
685 | } | |
686 | ||
687 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
688 | ||
78112e55 | 689 | fnic_flush_tx(fnic); |
5df6d737 AJ |
690 | |
691 | reset_cmpl_handler_end: | |
03298552 HP |
692 | fnic_clear_state_flags(fnic, FNIC_FLAGS_FWRESET); |
693 | ||
5df6d737 AJ |
694 | return ret; |
695 | } | |
696 | ||
697 | /* | |
698 | * fnic_fcpio_flogi_reg_cmpl_handler | |
699 | * Routine to handle flogi register completion | |
700 | */ | |
701 | static int fnic_fcpio_flogi_reg_cmpl_handler(struct fnic *fnic, | |
702 | struct fcpio_fw_req *desc) | |
703 | { | |
704 | u8 type; | |
705 | u8 hdr_status; | |
706 | struct fcpio_tag tag; | |
707 | int ret = 0; | |
5df6d737 | 708 | unsigned long flags; |
5df6d737 AJ |
709 | |
710 | fcpio_header_dec(&desc->hdr, &type, &hdr_status, &tag); | |
711 | ||
712 | /* Update fnic state based on status of flogi reg completion */ | |
713 | spin_lock_irqsave(&fnic->fnic_lock, flags); | |
714 | ||
5df6d737 AJ |
715 | if (fnic->state == FNIC_IN_ETH_TRANS_FC_MODE) { |
716 | ||
717 | /* Check flogi registration completion status */ | |
718 | if (!hdr_status) { | |
719 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
720 | "flog reg succeeded\n"); | |
721 | fnic->state = FNIC_IN_FC_MODE; | |
722 | } else { | |
723 | FNIC_SCSI_DBG(KERN_DEBUG, | |
724 | fnic->lport->host, | |
725 | "fnic flogi reg :failed %s\n", | |
726 | fnic_fcpio_status_to_str(hdr_status)); | |
727 | fnic->state = FNIC_IN_ETH_MODE; | |
728 | ret = -1; | |
729 | } | |
730 | } else { | |
731 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
732 | "Unexpected fnic state %s while" | |
733 | " processing flogi reg completion\n", | |
734 | fnic_state_to_str(fnic->state)); | |
735 | ret = -1; | |
736 | } | |
737 | ||
78112e55 | 738 | if (!ret) { |
5df6d737 AJ |
739 | if (fnic->stop_rx_link_events) { |
740 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
741 | goto reg_cmpl_handler_end; | |
742 | } | |
5df6d737 AJ |
743 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); |
744 | ||
78112e55 | 745 | fnic_flush_tx(fnic); |
5df6d737 | 746 | queue_work(fnic_event_queue, &fnic->frame_work); |
5df6d737 AJ |
747 | } else { |
748 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
5df6d737 AJ |
749 | } |
750 | ||
751 | reg_cmpl_handler_end: | |
752 | return ret; | |
753 | } | |
754 | ||
755 | static inline int is_ack_index_in_range(struct vnic_wq_copy *wq, | |
756 | u16 request_out) | |
757 | { | |
758 | if (wq->to_clean_index <= wq->to_use_index) { | |
759 | /* out of range, stale request_out index */ | |
760 | if (request_out < wq->to_clean_index || | |
761 | request_out >= wq->to_use_index) | |
762 | return 0; | |
763 | } else { | |
764 | /* out of range, stale request_out index */ | |
765 | if (request_out < wq->to_clean_index && | |
766 | request_out >= wq->to_use_index) | |
767 | return 0; | |
768 | } | |
769 | /* request_out index is in range */ | |
770 | return 1; | |
771 | } | |
772 | ||
773 | ||
774 | /* | |
775 | * Mark that ack received and store the Ack index. If there are multiple | |
776 | * acks received before Tx thread cleans it up, the latest value will be | |
777 | * used which is correct behavior. This state should be in the copy Wq | |
778 | * instead of in the fnic | |
779 | */ | |
780 | static inline void fnic_fcpio_ack_handler(struct fnic *fnic, | |
781 | unsigned int cq_index, | |
782 | struct fcpio_fw_req *desc) | |
783 | { | |
784 | struct vnic_wq_copy *wq; | |
785 | u16 request_out = desc->u.ack.request_out; | |
786 | unsigned long flags; | |
4d7007b4 | 787 | u64 *ox_id_tag = (u64 *)(void *)desc; |
5df6d737 AJ |
788 | |
789 | /* mark the ack state */ | |
790 | wq = &fnic->wq_copy[cq_index - fnic->raw_wq_count - fnic->rq_count]; | |
791 | spin_lock_irqsave(&fnic->wq_copy_lock[0], flags); | |
792 | ||
67125b02 | 793 | fnic->fnic_stats.misc_stats.last_ack_time = jiffies; |
5df6d737 AJ |
794 | if (is_ack_index_in_range(wq, request_out)) { |
795 | fnic->fw_ack_index[0] = request_out; | |
796 | fnic->fw_ack_recd[0] = 1; | |
67125b02 HP |
797 | } else |
798 | atomic64_inc( | |
799 | &fnic->fnic_stats.misc_stats.ack_index_out_of_range); | |
800 | ||
5df6d737 | 801 | spin_unlock_irqrestore(&fnic->wq_copy_lock[0], flags); |
4d7007b4 HP |
802 | FNIC_TRACE(fnic_fcpio_ack_handler, |
803 | fnic->lport->host->host_no, 0, 0, ox_id_tag[2], ox_id_tag[3], | |
804 | ox_id_tag[4], ox_id_tag[5]); | |
5df6d737 AJ |
805 | } |
806 | ||
807 | /* | |
808 | * fnic_fcpio_icmnd_cmpl_handler | |
809 | * Routine to handle icmnd completions | |
810 | */ | |
811 | static void fnic_fcpio_icmnd_cmpl_handler(struct fnic *fnic, | |
812 | struct fcpio_fw_req *desc) | |
813 | { | |
814 | u8 type; | |
815 | u8 hdr_status; | |
816 | struct fcpio_tag tag; | |
817 | u32 id; | |
818 | u64 xfer_len = 0; | |
819 | struct fcpio_icmnd_cmpl *icmnd_cmpl; | |
820 | struct fnic_io_req *io_req; | |
821 | struct scsi_cmnd *sc; | |
67125b02 | 822 | struct fnic_stats *fnic_stats = &fnic->fnic_stats; |
5df6d737 AJ |
823 | unsigned long flags; |
824 | spinlock_t *io_lock; | |
4d7007b4 | 825 | u64 cmd_trace; |
14eb5d90 | 826 | unsigned long start_time; |
445d2960 | 827 | unsigned long io_duration_time; |
5df6d737 AJ |
828 | |
829 | /* Decode the cmpl description to get the io_req id */ | |
830 | fcpio_header_dec(&desc->hdr, &type, &hdr_status, &tag); | |
831 | fcpio_tag_id_dec(&tag, &id); | |
14eb5d90 | 832 | icmnd_cmpl = &desc->u.icmnd_cmpl; |
5df6d737 | 833 | |
fc85799e | 834 | if (id >= fnic->fnic_max_tag_id) { |
03298552 HP |
835 | shost_printk(KERN_ERR, fnic->lport->host, |
836 | "Tag out of range tag %x hdr status = %s\n", | |
837 | id, fnic_fcpio_status_to_str(hdr_status)); | |
5df6d737 | 838 | return; |
03298552 | 839 | } |
5df6d737 AJ |
840 | |
841 | sc = scsi_host_find_tag(fnic->lport->host, id); | |
842 | WARN_ON_ONCE(!sc); | |
14eb5d90 | 843 | if (!sc) { |
67125b02 | 844 | atomic64_inc(&fnic_stats->io_stats.sc_null); |
14eb5d90 HP |
845 | shost_printk(KERN_ERR, fnic->lport->host, |
846 | "icmnd_cmpl sc is null - " | |
847 | "hdr status = %s tag = 0x%x desc = 0x%p\n", | |
848 | fnic_fcpio_status_to_str(hdr_status), id, desc); | |
4d7007b4 HP |
849 | FNIC_TRACE(fnic_fcpio_icmnd_cmpl_handler, |
850 | fnic->lport->host->host_no, id, | |
851 | ((u64)icmnd_cmpl->_resvd0[1] << 16 | | |
852 | (u64)icmnd_cmpl->_resvd0[0]), | |
853 | ((u64)hdr_status << 16 | | |
854 | (u64)icmnd_cmpl->scsi_status << 8 | | |
855 | (u64)icmnd_cmpl->flags), desc, | |
856 | (u64)icmnd_cmpl->residual, 0); | |
5df6d737 | 857 | return; |
14eb5d90 | 858 | } |
5df6d737 AJ |
859 | |
860 | io_lock = fnic_io_lock_hash(fnic, sc); | |
861 | spin_lock_irqsave(io_lock, flags); | |
862 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
863 | WARN_ON_ONCE(!io_req); | |
864 | if (!io_req) { | |
67125b02 | 865 | atomic64_inc(&fnic_stats->io_stats.ioreq_null); |
14eb5d90 | 866 | CMD_FLAGS(sc) |= FNIC_IO_REQ_NULL; |
5df6d737 | 867 | spin_unlock_irqrestore(io_lock, flags); |
14eb5d90 HP |
868 | shost_printk(KERN_ERR, fnic->lport->host, |
869 | "icmnd_cmpl io_req is null - " | |
870 | "hdr status = %s tag = 0x%x sc 0x%p\n", | |
871 | fnic_fcpio_status_to_str(hdr_status), id, sc); | |
5df6d737 AJ |
872 | return; |
873 | } | |
14eb5d90 | 874 | start_time = io_req->start_time; |
5df6d737 AJ |
875 | |
876 | /* firmware completed the io */ | |
877 | io_req->io_completed = 1; | |
878 | ||
879 | /* | |
880 | * if SCSI-ML has already issued abort on this command, | |
b9202b4a | 881 | * set completion of the IO. The abts path will clean it up |
5df6d737 AJ |
882 | */ |
883 | if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) { | |
b9202b4a SK |
884 | |
885 | /* | |
886 | * set the FNIC_IO_DONE so that this doesn't get | |
887 | * flagged as 'out of order' if it was not aborted | |
888 | */ | |
889 | CMD_FLAGS(sc) |= FNIC_IO_DONE; | |
14eb5d90 | 890 | CMD_FLAGS(sc) |= FNIC_IO_ABTS_PENDING; |
b9202b4a SK |
891 | spin_unlock_irqrestore(io_lock, flags); |
892 | if(FCPIO_ABORTED == hdr_status) | |
14eb5d90 | 893 | CMD_FLAGS(sc) |= FNIC_IO_ABORTED; |
b9202b4a SK |
894 | |
895 | FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host, | |
896 | "icmnd_cmpl abts pending " | |
897 | "hdr status = %s tag = 0x%x sc = 0x%p" | |
898 | "scsi_status = %x residual = %d\n", | |
899 | fnic_fcpio_status_to_str(hdr_status), | |
900 | id, sc, | |
901 | icmnd_cmpl->scsi_status, | |
902 | icmnd_cmpl->residual); | |
5df6d737 AJ |
903 | return; |
904 | } | |
905 | ||
906 | /* Mark the IO as complete */ | |
907 | CMD_STATE(sc) = FNIC_IOREQ_CMD_COMPLETE; | |
908 | ||
909 | icmnd_cmpl = &desc->u.icmnd_cmpl; | |
910 | ||
911 | switch (hdr_status) { | |
912 | case FCPIO_SUCCESS: | |
913 | sc->result = (DID_OK << 16) | icmnd_cmpl->scsi_status; | |
914 | xfer_len = scsi_bufflen(sc); | |
915 | scsi_set_resid(sc, icmnd_cmpl->residual); | |
916 | ||
917 | if (icmnd_cmpl->flags & FCPIO_ICMND_CMPL_RESID_UNDER) | |
918 | xfer_len -= icmnd_cmpl->residual; | |
919 | ||
39fcbbc0 SK |
920 | if (icmnd_cmpl->scsi_status == SAM_STAT_CHECK_CONDITION) |
921 | atomic64_inc(&fnic_stats->misc_stats.check_condition); | |
922 | ||
67125b02 HP |
923 | if (icmnd_cmpl->scsi_status == SAM_STAT_TASK_SET_FULL) |
924 | atomic64_inc(&fnic_stats->misc_stats.queue_fulls); | |
5df6d737 AJ |
925 | break; |
926 | ||
927 | case FCPIO_TIMEOUT: /* request was timed out */ | |
67125b02 | 928 | atomic64_inc(&fnic_stats->misc_stats.fcpio_timeout); |
5df6d737 AJ |
929 | sc->result = (DID_TIME_OUT << 16) | icmnd_cmpl->scsi_status; |
930 | break; | |
931 | ||
932 | case FCPIO_ABORTED: /* request was aborted */ | |
67125b02 | 933 | atomic64_inc(&fnic_stats->misc_stats.fcpio_aborted); |
5df6d737 AJ |
934 | sc->result = (DID_ERROR << 16) | icmnd_cmpl->scsi_status; |
935 | break; | |
936 | ||
937 | case FCPIO_DATA_CNT_MISMATCH: /* recv/sent more/less data than exp. */ | |
67125b02 | 938 | atomic64_inc(&fnic_stats->misc_stats.data_count_mismatch); |
5df6d737 AJ |
939 | scsi_set_resid(sc, icmnd_cmpl->residual); |
940 | sc->result = (DID_ERROR << 16) | icmnd_cmpl->scsi_status; | |
941 | break; | |
942 | ||
943 | case FCPIO_OUT_OF_RESOURCE: /* out of resources to complete request */ | |
67125b02 | 944 | atomic64_inc(&fnic_stats->fw_stats.fw_out_of_resources); |
5df6d737 AJ |
945 | sc->result = (DID_REQUEUE << 16) | icmnd_cmpl->scsi_status; |
946 | break; | |
67125b02 | 947 | |
5df6d737 | 948 | case FCPIO_IO_NOT_FOUND: /* requested I/O was not found */ |
67125b02 HP |
949 | atomic64_inc(&fnic_stats->io_stats.io_not_found); |
950 | sc->result = (DID_ERROR << 16) | icmnd_cmpl->scsi_status; | |
951 | break; | |
952 | ||
5df6d737 | 953 | case FCPIO_SGL_INVALID: /* request was aborted due to sgl error */ |
67125b02 HP |
954 | atomic64_inc(&fnic_stats->misc_stats.sgl_invalid); |
955 | sc->result = (DID_ERROR << 16) | icmnd_cmpl->scsi_status; | |
956 | break; | |
957 | ||
5df6d737 | 958 | case FCPIO_FW_ERR: /* request was terminated due fw error */ |
67125b02 HP |
959 | atomic64_inc(&fnic_stats->fw_stats.io_fw_errs); |
960 | sc->result = (DID_ERROR << 16) | icmnd_cmpl->scsi_status; | |
961 | break; | |
962 | ||
963 | case FCPIO_MSS_INVALID: /* request was aborted due to mss error */ | |
964 | atomic64_inc(&fnic_stats->misc_stats.mss_invalid); | |
965 | sc->result = (DID_ERROR << 16) | icmnd_cmpl->scsi_status; | |
966 | break; | |
967 | ||
968 | case FCPIO_INVALID_HEADER: /* header contains invalid data */ | |
969 | case FCPIO_INVALID_PARAM: /* some parameter in request invalid */ | |
970 | case FCPIO_REQ_NOT_SUPPORTED:/* request type is not supported */ | |
5df6d737 | 971 | default: |
5df6d737 AJ |
972 | sc->result = (DID_ERROR << 16) | icmnd_cmpl->scsi_status; |
973 | break; | |
974 | } | |
975 | ||
976 | /* Break link with the SCSI command */ | |
977 | CMD_SP(sc) = NULL; | |
14eb5d90 | 978 | CMD_FLAGS(sc) |= FNIC_IO_DONE; |
5df6d737 AJ |
979 | |
980 | spin_unlock_irqrestore(io_lock, flags); | |
981 | ||
14cee5b4 ML |
982 | if (hdr_status != FCPIO_SUCCESS) { |
983 | atomic64_inc(&fnic_stats->io_stats.io_failures); | |
984 | shost_printk(KERN_ERR, fnic->lport->host, "hdr status = %s\n", | |
985 | fnic_fcpio_status_to_str(hdr_status)); | |
986 | } | |
987 | ||
5df6d737 AJ |
988 | fnic_release_ioreq_buf(fnic, io_req, sc); |
989 | ||
990 | mempool_free(io_req, fnic->io_req_pool); | |
991 | ||
4d7007b4 HP |
992 | cmd_trace = ((u64)hdr_status << 56) | |
993 | (u64)icmnd_cmpl->scsi_status << 48 | | |
994 | (u64)icmnd_cmpl->flags << 40 | (u64)sc->cmnd[0] << 32 | | |
995 | (u64)sc->cmnd[2] << 24 | (u64)sc->cmnd[3] << 16 | | |
996 | (u64)sc->cmnd[4] << 8 | sc->cmnd[5]; | |
997 | ||
998 | FNIC_TRACE(fnic_fcpio_icmnd_cmpl_handler, | |
999 | sc->device->host->host_no, id, sc, | |
1000 | ((u64)icmnd_cmpl->_resvd0[1] << 56 | | |
1001 | (u64)icmnd_cmpl->_resvd0[0] << 48 | | |
1002 | jiffies_to_msecs(jiffies - start_time)), | |
1003 | desc, cmd_trace, | |
1004 | (((u64)CMD_FLAGS(sc) << 32) | CMD_STATE(sc))); | |
1005 | ||
5df6d737 AJ |
1006 | if (sc->sc_data_direction == DMA_FROM_DEVICE) { |
1007 | fnic->lport->host_stats.fcp_input_requests++; | |
1008 | fnic->fcp_input_bytes += xfer_len; | |
1009 | } else if (sc->sc_data_direction == DMA_TO_DEVICE) { | |
1010 | fnic->lport->host_stats.fcp_output_requests++; | |
1011 | fnic->fcp_output_bytes += xfer_len; | |
1012 | } else | |
1013 | fnic->lport->host_stats.fcp_control_requests++; | |
1014 | ||
67125b02 HP |
1015 | atomic64_dec(&fnic_stats->io_stats.active_ios); |
1016 | if (atomic64_read(&fnic->io_cmpl_skip)) | |
1017 | atomic64_dec(&fnic->io_cmpl_skip); | |
1018 | else | |
1019 | atomic64_inc(&fnic_stats->io_stats.io_completions); | |
1020 | ||
445d2960 SK |
1021 | |
1022 | io_duration_time = jiffies_to_msecs(jiffies) - jiffies_to_msecs(io_req->start_time); | |
1023 | ||
1024 | if(io_duration_time <= 10) | |
1025 | atomic64_inc(&fnic_stats->io_stats.io_btw_0_to_10_msec); | |
1026 | else if(io_duration_time <= 100) | |
1027 | atomic64_inc(&fnic_stats->io_stats.io_btw_10_to_100_msec); | |
1028 | else if(io_duration_time <= 500) | |
1029 | atomic64_inc(&fnic_stats->io_stats.io_btw_100_to_500_msec); | |
1030 | else if(io_duration_time <= 5000) | |
1031 | atomic64_inc(&fnic_stats->io_stats.io_btw_500_to_5000_msec); | |
1032 | else if(io_duration_time <= 10000) | |
1033 | atomic64_inc(&fnic_stats->io_stats.io_btw_5000_to_10000_msec); | |
1034 | else if(io_duration_time <= 30000) | |
1035 | atomic64_inc(&fnic_stats->io_stats.io_btw_10000_to_30000_msec); | |
1036 | else { | |
1037 | atomic64_inc(&fnic_stats->io_stats.io_greater_than_30000_msec); | |
1038 | ||
1039 | if(io_duration_time > atomic64_read(&fnic_stats->io_stats.current_max_io_time)) | |
1040 | atomic64_set(&fnic_stats->io_stats.current_max_io_time, io_duration_time); | |
1041 | } | |
1042 | ||
5df6d737 AJ |
1043 | /* Call SCSI completion function to complete the IO */ |
1044 | if (sc->scsi_done) | |
1045 | sc->scsi_done(sc); | |
5df6d737 AJ |
1046 | } |
1047 | ||
1048 | /* fnic_fcpio_itmf_cmpl_handler | |
1049 | * Routine to handle itmf completions | |
1050 | */ | |
1051 | static void fnic_fcpio_itmf_cmpl_handler(struct fnic *fnic, | |
1052 | struct fcpio_fw_req *desc) | |
1053 | { | |
1054 | u8 type; | |
1055 | u8 hdr_status; | |
1056 | struct fcpio_tag tag; | |
1057 | u32 id; | |
1058 | struct scsi_cmnd *sc; | |
1059 | struct fnic_io_req *io_req; | |
67125b02 HP |
1060 | struct fnic_stats *fnic_stats = &fnic->fnic_stats; |
1061 | struct abort_stats *abts_stats = &fnic->fnic_stats.abts_stats; | |
1062 | struct terminate_stats *term_stats = &fnic->fnic_stats.term_stats; | |
1063 | struct misc_stats *misc_stats = &fnic->fnic_stats.misc_stats; | |
5df6d737 AJ |
1064 | unsigned long flags; |
1065 | spinlock_t *io_lock; | |
14eb5d90 | 1066 | unsigned long start_time; |
5df6d737 AJ |
1067 | |
1068 | fcpio_header_dec(&desc->hdr, &type, &hdr_status, &tag); | |
1069 | fcpio_tag_id_dec(&tag, &id); | |
1070 | ||
fc85799e | 1071 | if ((id & FNIC_TAG_MASK) >= fnic->fnic_max_tag_id) { |
03298552 HP |
1072 | shost_printk(KERN_ERR, fnic->lport->host, |
1073 | "Tag out of range tag %x hdr status = %s\n", | |
1074 | id, fnic_fcpio_status_to_str(hdr_status)); | |
5df6d737 | 1075 | return; |
03298552 | 1076 | } |
5df6d737 AJ |
1077 | |
1078 | sc = scsi_host_find_tag(fnic->lport->host, id & FNIC_TAG_MASK); | |
1079 | WARN_ON_ONCE(!sc); | |
14eb5d90 | 1080 | if (!sc) { |
67125b02 | 1081 | atomic64_inc(&fnic_stats->io_stats.sc_null); |
14eb5d90 HP |
1082 | shost_printk(KERN_ERR, fnic->lport->host, |
1083 | "itmf_cmpl sc is null - hdr status = %s tag = 0x%x\n", | |
1084 | fnic_fcpio_status_to_str(hdr_status), id); | |
5df6d737 | 1085 | return; |
14eb5d90 | 1086 | } |
5df6d737 AJ |
1087 | io_lock = fnic_io_lock_hash(fnic, sc); |
1088 | spin_lock_irqsave(io_lock, flags); | |
1089 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
1090 | WARN_ON_ONCE(!io_req); | |
1091 | if (!io_req) { | |
67125b02 | 1092 | atomic64_inc(&fnic_stats->io_stats.ioreq_null); |
5df6d737 | 1093 | spin_unlock_irqrestore(io_lock, flags); |
14eb5d90 HP |
1094 | CMD_FLAGS(sc) |= FNIC_IO_ABT_TERM_REQ_NULL; |
1095 | shost_printk(KERN_ERR, fnic->lport->host, | |
1096 | "itmf_cmpl io_req is null - " | |
1097 | "hdr status = %s tag = 0x%x sc 0x%p\n", | |
1098 | fnic_fcpio_status_to_str(hdr_status), id, sc); | |
5df6d737 AJ |
1099 | return; |
1100 | } | |
14eb5d90 | 1101 | start_time = io_req->start_time; |
5df6d737 | 1102 | |
03298552 HP |
1103 | if ((id & FNIC_TAG_ABORT) && (id & FNIC_TAG_DEV_RST)) { |
1104 | /* Abort and terminate completion of device reset req */ | |
1105 | /* REVISIT : Add asserts about various flags */ | |
1106 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
1107 | "dev reset abts cmpl recd. id %x status %s\n", | |
1108 | id, fnic_fcpio_status_to_str(hdr_status)); | |
1109 | CMD_STATE(sc) = FNIC_IOREQ_ABTS_COMPLETE; | |
1110 | CMD_ABTS_STATUS(sc) = hdr_status; | |
1111 | CMD_FLAGS(sc) |= FNIC_DEV_RST_DONE; | |
1112 | if (io_req->abts_done) | |
1113 | complete(io_req->abts_done); | |
1114 | spin_unlock_irqrestore(io_lock, flags); | |
1115 | } else if (id & FNIC_TAG_ABORT) { | |
5df6d737 | 1116 | /* Completion of abort cmd */ |
67125b02 HP |
1117 | switch (hdr_status) { |
1118 | case FCPIO_SUCCESS: | |
1119 | break; | |
1120 | case FCPIO_TIMEOUT: | |
1121 | if (CMD_FLAGS(sc) & FNIC_IO_ABTS_ISSUED) | |
1122 | atomic64_inc(&abts_stats->abort_fw_timeouts); | |
1123 | else | |
1124 | atomic64_inc( | |
1125 | &term_stats->terminate_fw_timeouts); | |
1126 | break; | |
691a837c SK |
1127 | case FCPIO_ITMF_REJECTED: |
1128 | FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host, | |
1129 | "abort reject recd. id %d\n", | |
1130 | (int)(id & FNIC_TAG_MASK)); | |
1131 | break; | |
67125b02 HP |
1132 | case FCPIO_IO_NOT_FOUND: |
1133 | if (CMD_FLAGS(sc) & FNIC_IO_ABTS_ISSUED) | |
1134 | atomic64_inc(&abts_stats->abort_io_not_found); | |
1135 | else | |
1136 | atomic64_inc( | |
1137 | &term_stats->terminate_io_not_found); | |
1138 | break; | |
1139 | default: | |
1140 | if (CMD_FLAGS(sc) & FNIC_IO_ABTS_ISSUED) | |
1141 | atomic64_inc(&abts_stats->abort_failures); | |
1142 | else | |
1143 | atomic64_inc( | |
1144 | &term_stats->terminate_failures); | |
1145 | break; | |
1146 | } | |
5df6d737 AJ |
1147 | if (CMD_STATE(sc) != FNIC_IOREQ_ABTS_PENDING) { |
1148 | /* This is a late completion. Ignore it */ | |
1149 | spin_unlock_irqrestore(io_lock, flags); | |
1150 | return; | |
1151 | } | |
691a837c | 1152 | |
14eb5d90 | 1153 | CMD_FLAGS(sc) |= FNIC_IO_ABT_TERM_DONE; |
ccc6d704 | 1154 | CMD_ABTS_STATUS(sc) = hdr_status; |
67125b02 | 1155 | |
691a837c SK |
1156 | /* If the status is IO not found consider it as success */ |
1157 | if (hdr_status == FCPIO_IO_NOT_FOUND) | |
1158 | CMD_ABTS_STATUS(sc) = FCPIO_SUCCESS; | |
691a837c | 1159 | |
67125b02 HP |
1160 | if (!(CMD_FLAGS(sc) & (FNIC_IO_ABORTED | FNIC_IO_DONE))) |
1161 | atomic64_inc(&misc_stats->no_icmnd_itmf_cmpls); | |
1162 | ||
5df6d737 AJ |
1163 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
1164 | "abts cmpl recd. id %d status %s\n", | |
1165 | (int)(id & FNIC_TAG_MASK), | |
1166 | fnic_fcpio_status_to_str(hdr_status)); | |
1167 | ||
1168 | /* | |
1169 | * If scsi_eh thread is blocked waiting for abts to complete, | |
1170 | * signal completion to it. IO will be cleaned in the thread | |
1171 | * else clean it in this context | |
1172 | */ | |
1173 | if (io_req->abts_done) { | |
1174 | complete(io_req->abts_done); | |
1175 | spin_unlock_irqrestore(io_lock, flags); | |
1176 | } else { | |
1177 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
1178 | "abts cmpl, completing IO\n"); | |
1179 | CMD_SP(sc) = NULL; | |
1180 | sc->result = (DID_ERROR << 16); | |
1181 | ||
1182 | spin_unlock_irqrestore(io_lock, flags); | |
1183 | ||
1184 | fnic_release_ioreq_buf(fnic, io_req, sc); | |
1185 | mempool_free(io_req, fnic->io_req_pool); | |
4d7007b4 HP |
1186 | if (sc->scsi_done) { |
1187 | FNIC_TRACE(fnic_fcpio_itmf_cmpl_handler, | |
1188 | sc->device->host->host_no, id, | |
1189 | sc, | |
1190 | jiffies_to_msecs(jiffies - start_time), | |
1191 | desc, | |
1192 | (((u64)hdr_status << 40) | | |
1193 | (u64)sc->cmnd[0] << 32 | | |
1194 | (u64)sc->cmnd[2] << 24 | | |
1195 | (u64)sc->cmnd[3] << 16 | | |
1196 | (u64)sc->cmnd[4] << 8 | sc->cmnd[5]), | |
1197 | (((u64)CMD_FLAGS(sc) << 32) | | |
1198 | CMD_STATE(sc))); | |
5df6d737 | 1199 | sc->scsi_done(sc); |
7ef539c8 SK |
1200 | atomic64_dec(&fnic_stats->io_stats.active_ios); |
1201 | if (atomic64_read(&fnic->io_cmpl_skip)) | |
1202 | atomic64_dec(&fnic->io_cmpl_skip); | |
1203 | else | |
1204 | atomic64_inc(&fnic_stats->io_stats.io_completions); | |
4d7007b4 | 1205 | } |
5df6d737 AJ |
1206 | } |
1207 | ||
1208 | } else if (id & FNIC_TAG_DEV_RST) { | |
1209 | /* Completion of device reset */ | |
1210 | CMD_LR_STATUS(sc) = hdr_status; | |
03298552 HP |
1211 | if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) { |
1212 | spin_unlock_irqrestore(io_lock, flags); | |
14eb5d90 | 1213 | CMD_FLAGS(sc) |= FNIC_DEV_RST_ABTS_PENDING; |
4d7007b4 HP |
1214 | FNIC_TRACE(fnic_fcpio_itmf_cmpl_handler, |
1215 | sc->device->host->host_no, id, sc, | |
1216 | jiffies_to_msecs(jiffies - start_time), | |
1217 | desc, 0, | |
1218 | (((u64)CMD_FLAGS(sc) << 32) | CMD_STATE(sc))); | |
03298552 HP |
1219 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
1220 | "Terminate pending " | |
1221 | "dev reset cmpl recd. id %d status %s\n", | |
1222 | (int)(id & FNIC_TAG_MASK), | |
1223 | fnic_fcpio_status_to_str(hdr_status)); | |
1224 | return; | |
1225 | } | |
1226 | if (CMD_FLAGS(sc) & FNIC_DEV_RST_TIMED_OUT) { | |
1227 | /* Need to wait for terminate completion */ | |
1228 | spin_unlock_irqrestore(io_lock, flags); | |
4d7007b4 HP |
1229 | FNIC_TRACE(fnic_fcpio_itmf_cmpl_handler, |
1230 | sc->device->host->host_no, id, sc, | |
1231 | jiffies_to_msecs(jiffies - start_time), | |
1232 | desc, 0, | |
1233 | (((u64)CMD_FLAGS(sc) << 32) | CMD_STATE(sc))); | |
03298552 HP |
1234 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
1235 | "dev reset cmpl recd after time out. " | |
1236 | "id %d status %s\n", | |
1237 | (int)(id & FNIC_TAG_MASK), | |
1238 | fnic_fcpio_status_to_str(hdr_status)); | |
1239 | return; | |
1240 | } | |
5df6d737 | 1241 | CMD_STATE(sc) = FNIC_IOREQ_CMD_COMPLETE; |
03298552 | 1242 | CMD_FLAGS(sc) |= FNIC_DEV_RST_DONE; |
5df6d737 AJ |
1243 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
1244 | "dev reset cmpl recd. id %d status %s\n", | |
1245 | (int)(id & FNIC_TAG_MASK), | |
1246 | fnic_fcpio_status_to_str(hdr_status)); | |
1247 | if (io_req->dr_done) | |
1248 | complete(io_req->dr_done); | |
1249 | spin_unlock_irqrestore(io_lock, flags); | |
1250 | ||
1251 | } else { | |
1252 | shost_printk(KERN_ERR, fnic->lport->host, | |
1253 | "Unexpected itmf io state %s tag %x\n", | |
1254 | fnic_ioreq_state_to_str(CMD_STATE(sc)), id); | |
1255 | spin_unlock_irqrestore(io_lock, flags); | |
1256 | } | |
1257 | ||
1258 | } | |
1259 | ||
1260 | /* | |
1261 | * fnic_fcpio_cmpl_handler | |
1262 | * Routine to service the cq for wq_copy | |
1263 | */ | |
1264 | static int fnic_fcpio_cmpl_handler(struct vnic_dev *vdev, | |
1265 | unsigned int cq_index, | |
1266 | struct fcpio_fw_req *desc) | |
1267 | { | |
1268 | struct fnic *fnic = vnic_dev_priv(vdev); | |
5df6d737 | 1269 | |
67125b02 HP |
1270 | switch (desc->hdr.type) { |
1271 | case FCPIO_ICMND_CMPL: /* fw completed a command */ | |
1272 | case FCPIO_ITMF_CMPL: /* fw completed itmf (abort cmd, lun reset)*/ | |
1273 | case FCPIO_FLOGI_REG_CMPL: /* fw completed flogi_reg */ | |
1274 | case FCPIO_FLOGI_FIP_REG_CMPL: /* fw completed flogi_fip_reg */ | |
1275 | case FCPIO_RESET_CMPL: /* fw completed reset */ | |
1276 | atomic64_dec(&fnic->fnic_stats.fw_stats.active_fw_reqs); | |
1277 | break; | |
1278 | default: | |
1279 | break; | |
1280 | } | |
1281 | ||
5df6d737 AJ |
1282 | switch (desc->hdr.type) { |
1283 | case FCPIO_ACK: /* fw copied copy wq desc to its queue */ | |
1284 | fnic_fcpio_ack_handler(fnic, cq_index, desc); | |
1285 | break; | |
1286 | ||
1287 | case FCPIO_ICMND_CMPL: /* fw completed a command */ | |
1288 | fnic_fcpio_icmnd_cmpl_handler(fnic, desc); | |
1289 | break; | |
1290 | ||
1291 | case FCPIO_ITMF_CMPL: /* fw completed itmf (abort cmd, lun reset)*/ | |
1292 | fnic_fcpio_itmf_cmpl_handler(fnic, desc); | |
1293 | break; | |
1294 | ||
1295 | case FCPIO_FLOGI_REG_CMPL: /* fw completed flogi_reg */ | |
78112e55 | 1296 | case FCPIO_FLOGI_FIP_REG_CMPL: /* fw completed flogi_fip_reg */ |
03298552 | 1297 | fnic_fcpio_flogi_reg_cmpl_handler(fnic, desc); |
5df6d737 AJ |
1298 | break; |
1299 | ||
1300 | case FCPIO_RESET_CMPL: /* fw completed reset */ | |
03298552 | 1301 | fnic_fcpio_fw_reset_cmpl_handler(fnic, desc); |
5df6d737 AJ |
1302 | break; |
1303 | ||
1304 | default: | |
1305 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
1306 | "firmware completion type %d\n", | |
1307 | desc->hdr.type); | |
1308 | break; | |
1309 | } | |
1310 | ||
03298552 | 1311 | return 0; |
5df6d737 AJ |
1312 | } |
1313 | ||
1314 | /* | |
1315 | * fnic_wq_copy_cmpl_handler | |
1316 | * Routine to process wq copy | |
1317 | */ | |
1318 | int fnic_wq_copy_cmpl_handler(struct fnic *fnic, int copy_work_to_do) | |
1319 | { | |
1320 | unsigned int wq_work_done = 0; | |
1321 | unsigned int i, cq_index; | |
1322 | unsigned int cur_work_done; | |
1323 | ||
1324 | for (i = 0; i < fnic->wq_copy_count; i++) { | |
1325 | cq_index = i + fnic->raw_wq_count + fnic->rq_count; | |
1326 | cur_work_done = vnic_cq_copy_service(&fnic->cq[cq_index], | |
1327 | fnic_fcpio_cmpl_handler, | |
1328 | copy_work_to_do); | |
1329 | wq_work_done += cur_work_done; | |
1330 | } | |
1331 | return wq_work_done; | |
1332 | } | |
1333 | ||
1334 | static void fnic_cleanup_io(struct fnic *fnic, int exclude_id) | |
1335 | { | |
1259c5dc | 1336 | int i; |
5df6d737 AJ |
1337 | struct fnic_io_req *io_req; |
1338 | unsigned long flags = 0; | |
1339 | struct scsi_cmnd *sc; | |
1340 | spinlock_t *io_lock; | |
14eb5d90 | 1341 | unsigned long start_time = 0; |
67125b02 | 1342 | struct fnic_stats *fnic_stats = &fnic->fnic_stats; |
5df6d737 | 1343 | |
fc85799e | 1344 | for (i = 0; i < fnic->fnic_max_tag_id; i++) { |
5df6d737 AJ |
1345 | if (i == exclude_id) |
1346 | continue; | |
1347 | ||
1259c5dc SB |
1348 | io_lock = fnic_io_lock_tag(fnic, i); |
1349 | spin_lock_irqsave(io_lock, flags); | |
5df6d737 | 1350 | sc = scsi_host_find_tag(fnic->lport->host, i); |
1259c5dc SB |
1351 | if (!sc) { |
1352 | spin_unlock_irqrestore(io_lock, flags); | |
5df6d737 | 1353 | continue; |
1259c5dc | 1354 | } |
5df6d737 | 1355 | |
5df6d737 | 1356 | io_req = (struct fnic_io_req *)CMD_SP(sc); |
03298552 HP |
1357 | if ((CMD_FLAGS(sc) & FNIC_DEVICE_RESET) && |
1358 | !(CMD_FLAGS(sc) & FNIC_DEV_RST_DONE)) { | |
1359 | /* | |
1360 | * We will be here only when FW completes reset | |
1361 | * without sending completions for outstanding ios. | |
1362 | */ | |
1363 | CMD_FLAGS(sc) |= FNIC_DEV_RST_DONE; | |
1364 | if (io_req && io_req->dr_done) | |
1365 | complete(io_req->dr_done); | |
1366 | else if (io_req && io_req->abts_done) | |
1367 | complete(io_req->abts_done); | |
1368 | spin_unlock_irqrestore(io_lock, flags); | |
1369 | continue; | |
1370 | } else if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) { | |
1371 | spin_unlock_irqrestore(io_lock, flags); | |
1372 | continue; | |
1373 | } | |
5df6d737 AJ |
1374 | if (!io_req) { |
1375 | spin_unlock_irqrestore(io_lock, flags); | |
1376 | goto cleanup_scsi_cmd; | |
1377 | } | |
1378 | ||
1379 | CMD_SP(sc) = NULL; | |
1380 | ||
1381 | spin_unlock_irqrestore(io_lock, flags); | |
1382 | ||
1383 | /* | |
1384 | * If there is a scsi_cmnd associated with this io_req, then | |
1385 | * free the corresponding state | |
1386 | */ | |
14eb5d90 | 1387 | start_time = io_req->start_time; |
5df6d737 AJ |
1388 | fnic_release_ioreq_buf(fnic, io_req, sc); |
1389 | mempool_free(io_req, fnic->io_req_pool); | |
1390 | ||
1391 | cleanup_scsi_cmd: | |
1392 | sc->result = DID_TRANSPORT_DISRUPTED << 16; | |
66818663 HS |
1393 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
1394 | "%s: sc duration = %lu DID_TRANSPORT_DISRUPTED\n", | |
1395 | __func__, (jiffies - start_time)); | |
5df6d737 | 1396 | |
67125b02 HP |
1397 | if (atomic64_read(&fnic->io_cmpl_skip)) |
1398 | atomic64_dec(&fnic->io_cmpl_skip); | |
1399 | else | |
1400 | atomic64_inc(&fnic_stats->io_stats.io_completions); | |
1401 | ||
5df6d737 | 1402 | /* Complete the command to SCSI */ |
4d7007b4 HP |
1403 | if (sc->scsi_done) { |
1404 | FNIC_TRACE(fnic_cleanup_io, | |
1405 | sc->device->host->host_no, i, sc, | |
1406 | jiffies_to_msecs(jiffies - start_time), | |
1407 | 0, ((u64)sc->cmnd[0] << 32 | | |
1408 | (u64)sc->cmnd[2] << 24 | | |
1409 | (u64)sc->cmnd[3] << 16 | | |
1410 | (u64)sc->cmnd[4] << 8 | sc->cmnd[5]), | |
1411 | (((u64)CMD_FLAGS(sc) << 32) | CMD_STATE(sc))); | |
1412 | ||
5df6d737 | 1413 | sc->scsi_done(sc); |
4d7007b4 | 1414 | } |
5df6d737 AJ |
1415 | } |
1416 | } | |
1417 | ||
1418 | void fnic_wq_copy_cleanup_handler(struct vnic_wq_copy *wq, | |
1419 | struct fcpio_host_req *desc) | |
1420 | { | |
1421 | u32 id; | |
1422 | struct fnic *fnic = vnic_dev_priv(wq->vdev); | |
1423 | struct fnic_io_req *io_req; | |
1424 | struct scsi_cmnd *sc; | |
1425 | unsigned long flags; | |
1426 | spinlock_t *io_lock; | |
14eb5d90 | 1427 | unsigned long start_time = 0; |
5df6d737 AJ |
1428 | |
1429 | /* get the tag reference */ | |
1430 | fcpio_tag_id_dec(&desc->hdr.tag, &id); | |
1431 | id &= FNIC_TAG_MASK; | |
1432 | ||
fc85799e | 1433 | if (id >= fnic->fnic_max_tag_id) |
5df6d737 AJ |
1434 | return; |
1435 | ||
1436 | sc = scsi_host_find_tag(fnic->lport->host, id); | |
1437 | if (!sc) | |
1438 | return; | |
1439 | ||
1440 | io_lock = fnic_io_lock_hash(fnic, sc); | |
1441 | spin_lock_irqsave(io_lock, flags); | |
1442 | ||
1443 | /* Get the IO context which this desc refers to */ | |
1444 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
1445 | ||
1446 | /* fnic interrupts are turned off by now */ | |
1447 | ||
1448 | if (!io_req) { | |
1449 | spin_unlock_irqrestore(io_lock, flags); | |
1450 | goto wq_copy_cleanup_scsi_cmd; | |
1451 | } | |
1452 | ||
1453 | CMD_SP(sc) = NULL; | |
1454 | ||
1455 | spin_unlock_irqrestore(io_lock, flags); | |
1456 | ||
14eb5d90 | 1457 | start_time = io_req->start_time; |
5df6d737 AJ |
1458 | fnic_release_ioreq_buf(fnic, io_req, sc); |
1459 | mempool_free(io_req, fnic->io_req_pool); | |
1460 | ||
1461 | wq_copy_cleanup_scsi_cmd: | |
1462 | sc->result = DID_NO_CONNECT << 16; | |
1463 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, "wq_copy_cleanup_handler:" | |
1464 | " DID_NO_CONNECT\n"); | |
1465 | ||
4d7007b4 HP |
1466 | if (sc->scsi_done) { |
1467 | FNIC_TRACE(fnic_wq_copy_cleanup_handler, | |
1468 | sc->device->host->host_no, id, sc, | |
1469 | jiffies_to_msecs(jiffies - start_time), | |
1470 | 0, ((u64)sc->cmnd[0] << 32 | | |
1471 | (u64)sc->cmnd[2] << 24 | (u64)sc->cmnd[3] << 16 | | |
1472 | (u64)sc->cmnd[4] << 8 | sc->cmnd[5]), | |
1473 | (((u64)CMD_FLAGS(sc) << 32) | CMD_STATE(sc))); | |
1474 | ||
5df6d737 | 1475 | sc->scsi_done(sc); |
4d7007b4 | 1476 | } |
5df6d737 AJ |
1477 | } |
1478 | ||
1479 | static inline int fnic_queue_abort_io_req(struct fnic *fnic, int tag, | |
1480 | u32 task_req, u8 *fc_lun, | |
1481 | struct fnic_io_req *io_req) | |
1482 | { | |
1483 | struct vnic_wq_copy *wq = &fnic->wq_copy[0]; | |
03298552 | 1484 | struct Scsi_Host *host = fnic->lport->host; |
67125b02 | 1485 | struct misc_stats *misc_stats = &fnic->fnic_stats.misc_stats; |
5df6d737 AJ |
1486 | unsigned long flags; |
1487 | ||
03298552 HP |
1488 | spin_lock_irqsave(host->host_lock, flags); |
1489 | if (unlikely(fnic_chk_state_flags_locked(fnic, | |
1490 | FNIC_FLAGS_IO_BLOCKED))) { | |
1491 | spin_unlock_irqrestore(host->host_lock, flags); | |
1492 | return 1; | |
1493 | } else | |
1494 | atomic_inc(&fnic->in_flight); | |
1495 | spin_unlock_irqrestore(host->host_lock, flags); | |
1496 | ||
5df6d737 AJ |
1497 | spin_lock_irqsave(&fnic->wq_copy_lock[0], flags); |
1498 | ||
1499 | if (vnic_wq_copy_desc_avail(wq) <= fnic->wq_copy_desc_low[0]) | |
1500 | free_wq_copy_descs(fnic, wq); | |
1501 | ||
1502 | if (!vnic_wq_copy_desc_avail(wq)) { | |
1503 | spin_unlock_irqrestore(&fnic->wq_copy_lock[0], flags); | |
03298552 | 1504 | atomic_dec(&fnic->in_flight); |
14eb5d90 | 1505 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
03298552 | 1506 | "fnic_queue_abort_io_req: failure: no descriptors\n"); |
67125b02 | 1507 | atomic64_inc(&misc_stats->abts_cpwq_alloc_failures); |
5df6d737 AJ |
1508 | return 1; |
1509 | } | |
1510 | fnic_queue_wq_copy_desc_itmf(wq, tag | FNIC_TAG_ABORT, | |
1511 | 0, task_req, tag, fc_lun, io_req->port_id, | |
1512 | fnic->config.ra_tov, fnic->config.ed_tov); | |
1513 | ||
67125b02 HP |
1514 | atomic64_inc(&fnic->fnic_stats.fw_stats.active_fw_reqs); |
1515 | if (atomic64_read(&fnic->fnic_stats.fw_stats.active_fw_reqs) > | |
1516 | atomic64_read(&fnic->fnic_stats.fw_stats.max_fw_reqs)) | |
1517 | atomic64_set(&fnic->fnic_stats.fw_stats.max_fw_reqs, | |
1518 | atomic64_read(&fnic->fnic_stats.fw_stats.active_fw_reqs)); | |
1519 | ||
5df6d737 | 1520 | spin_unlock_irqrestore(&fnic->wq_copy_lock[0], flags); |
03298552 HP |
1521 | atomic_dec(&fnic->in_flight); |
1522 | ||
5df6d737 AJ |
1523 | return 0; |
1524 | } | |
1525 | ||
03298552 | 1526 | static void fnic_rport_exch_reset(struct fnic *fnic, u32 port_id) |
5df6d737 AJ |
1527 | { |
1528 | int tag; | |
03298552 | 1529 | int abt_tag; |
67125b02 | 1530 | int term_cnt = 0; |
5df6d737 AJ |
1531 | struct fnic_io_req *io_req; |
1532 | spinlock_t *io_lock; | |
1533 | unsigned long flags; | |
1534 | struct scsi_cmnd *sc; | |
67125b02 HP |
1535 | struct reset_stats *reset_stats = &fnic->fnic_stats.reset_stats; |
1536 | struct terminate_stats *term_stats = &fnic->fnic_stats.term_stats; | |
5df6d737 AJ |
1537 | struct scsi_lun fc_lun; |
1538 | enum fnic_ioreq_state old_ioreq_state; | |
1539 | ||
1540 | FNIC_SCSI_DBG(KERN_DEBUG, | |
1541 | fnic->lport->host, | |
03298552 | 1542 | "fnic_rport_exch_reset called portid 0x%06x\n", |
5df6d737 AJ |
1543 | port_id); |
1544 | ||
1545 | if (fnic->in_remove) | |
1546 | return; | |
1547 | ||
fc85799e | 1548 | for (tag = 0; tag < fnic->fnic_max_tag_id; tag++) { |
03298552 | 1549 | abt_tag = tag; |
1259c5dc SB |
1550 | io_lock = fnic_io_lock_tag(fnic, tag); |
1551 | spin_lock_irqsave(io_lock, flags); | |
5df6d737 | 1552 | sc = scsi_host_find_tag(fnic->lport->host, tag); |
1259c5dc SB |
1553 | if (!sc) { |
1554 | spin_unlock_irqrestore(io_lock, flags); | |
5df6d737 | 1555 | continue; |
1259c5dc | 1556 | } |
5df6d737 AJ |
1557 | |
1558 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
1559 | ||
1560 | if (!io_req || io_req->port_id != port_id) { | |
1561 | spin_unlock_irqrestore(io_lock, flags); | |
1562 | continue; | |
1563 | } | |
1564 | ||
03298552 | 1565 | if ((CMD_FLAGS(sc) & FNIC_DEVICE_RESET) && |
14eb5d90 | 1566 | (!(CMD_FLAGS(sc) & FNIC_DEV_RST_ISSUED))) { |
03298552 HP |
1567 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
1568 | "fnic_rport_exch_reset dev rst not pending sc 0x%p\n", | |
1569 | sc); | |
1570 | spin_unlock_irqrestore(io_lock, flags); | |
1571 | continue; | |
1572 | } | |
1573 | ||
5df6d737 AJ |
1574 | /* |
1575 | * Found IO that is still pending with firmware and | |
1576 | * belongs to rport that went away | |
1577 | */ | |
1578 | if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) { | |
1579 | spin_unlock_irqrestore(io_lock, flags); | |
1580 | continue; | |
1581 | } | |
03298552 HP |
1582 | if (io_req->abts_done) { |
1583 | shost_printk(KERN_ERR, fnic->lport->host, | |
1584 | "fnic_rport_exch_reset: io_req->abts_done is set " | |
1585 | "state is %s\n", | |
1586 | fnic_ioreq_state_to_str(CMD_STATE(sc))); | |
1587 | } | |
1588 | ||
14eb5d90 HP |
1589 | if (!(CMD_FLAGS(sc) & FNIC_IO_ISSUED)) { |
1590 | shost_printk(KERN_ERR, fnic->lport->host, | |
1591 | "rport_exch_reset " | |
1592 | "IO not yet issued %p tag 0x%x flags " | |
1593 | "%x state %d\n", | |
1594 | sc, tag, CMD_FLAGS(sc), CMD_STATE(sc)); | |
1595 | } | |
5df6d737 AJ |
1596 | old_ioreq_state = CMD_STATE(sc); |
1597 | CMD_STATE(sc) = FNIC_IOREQ_ABTS_PENDING; | |
1598 | CMD_ABTS_STATUS(sc) = FCPIO_INVALID_CODE; | |
03298552 | 1599 | if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) { |
67125b02 | 1600 | atomic64_inc(&reset_stats->device_reset_terminates); |
03298552 HP |
1601 | abt_tag = (tag | FNIC_TAG_DEV_RST); |
1602 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
1603 | "fnic_rport_exch_reset dev rst sc 0x%p\n", | |
1604 | sc); | |
1605 | } | |
5df6d737 AJ |
1606 | |
1607 | BUG_ON(io_req->abts_done); | |
1608 | ||
1609 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
1610 | "fnic_rport_reset_exch: Issuing abts\n"); | |
1611 | ||
1612 | spin_unlock_irqrestore(io_lock, flags); | |
1613 | ||
1614 | /* Now queue the abort command to firmware */ | |
1615 | int_to_scsilun(sc->device->lun, &fc_lun); | |
1616 | ||
03298552 | 1617 | if (fnic_queue_abort_io_req(fnic, abt_tag, |
5df6d737 AJ |
1618 | FCPIO_ITMF_ABT_TASK_TERM, |
1619 | fc_lun.scsi_lun, io_req)) { | |
1620 | /* | |
1621 | * Revert the cmd state back to old state, if | |
25985edc | 1622 | * it hasn't changed in between. This cmd will get |
5df6d737 AJ |
1623 | * aborted later by scsi_eh, or cleaned up during |
1624 | * lun reset | |
1625 | */ | |
5df6d737 AJ |
1626 | spin_lock_irqsave(io_lock, flags); |
1627 | if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) | |
1628 | CMD_STATE(sc) = old_ioreq_state; | |
1629 | spin_unlock_irqrestore(io_lock, flags); | |
03298552 HP |
1630 | } else { |
1631 | spin_lock_irqsave(io_lock, flags); | |
a0bf1ca2 HP |
1632 | if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) |
1633 | CMD_FLAGS(sc) |= FNIC_DEV_RST_TERM_ISSUED; | |
14eb5d90 HP |
1634 | else |
1635 | CMD_FLAGS(sc) |= FNIC_IO_INTERNAL_TERM_ISSUED; | |
03298552 | 1636 | spin_unlock_irqrestore(io_lock, flags); |
67125b02 HP |
1637 | atomic64_inc(&term_stats->terminates); |
1638 | term_cnt++; | |
5df6d737 AJ |
1639 | } |
1640 | } | |
67125b02 HP |
1641 | if (term_cnt > atomic64_read(&term_stats->max_terminates)) |
1642 | atomic64_set(&term_stats->max_terminates, term_cnt); | |
5df6d737 AJ |
1643 | |
1644 | } | |
1645 | ||
1646 | void fnic_terminate_rport_io(struct fc_rport *rport) | |
1647 | { | |
1648 | int tag; | |
03298552 | 1649 | int abt_tag; |
67125b02 | 1650 | int term_cnt = 0; |
5df6d737 AJ |
1651 | struct fnic_io_req *io_req; |
1652 | spinlock_t *io_lock; | |
1653 | unsigned long flags; | |
1654 | struct scsi_cmnd *sc; | |
1655 | struct scsi_lun fc_lun; | |
d0385d92 SB |
1656 | struct fc_rport_libfc_priv *rdata; |
1657 | struct fc_lport *lport; | |
1658 | struct fnic *fnic; | |
5df6d737 | 1659 | struct fc_rport *cmd_rport; |
67125b02 HP |
1660 | struct reset_stats *reset_stats; |
1661 | struct terminate_stats *term_stats; | |
5df6d737 AJ |
1662 | enum fnic_ioreq_state old_ioreq_state; |
1663 | ||
d0385d92 SB |
1664 | if (!rport) { |
1665 | printk(KERN_ERR "fnic_terminate_rport_io: rport is NULL\n"); | |
1666 | return; | |
1667 | } | |
1668 | rdata = rport->dd_data; | |
1669 | ||
1670 | if (!rdata) { | |
1671 | printk(KERN_ERR "fnic_terminate_rport_io: rdata is NULL\n"); | |
1672 | return; | |
1673 | } | |
1674 | lport = rdata->local_port; | |
1675 | ||
1676 | if (!lport) { | |
1677 | printk(KERN_ERR "fnic_terminate_rport_io: lport is NULL\n"); | |
1678 | return; | |
1679 | } | |
1680 | fnic = lport_priv(lport); | |
5df6d737 AJ |
1681 | FNIC_SCSI_DBG(KERN_DEBUG, |
1682 | fnic->lport->host, "fnic_terminate_rport_io called" | |
03298552 HP |
1683 | " wwpn 0x%llx, wwnn0x%llx, rport 0x%p, portid 0x%06x\n", |
1684 | rport->port_name, rport->node_name, rport, | |
5df6d737 AJ |
1685 | rport->port_id); |
1686 | ||
1687 | if (fnic->in_remove) | |
1688 | return; | |
1689 | ||
67125b02 HP |
1690 | reset_stats = &fnic->fnic_stats.reset_stats; |
1691 | term_stats = &fnic->fnic_stats.term_stats; | |
1692 | ||
fc85799e | 1693 | for (tag = 0; tag < fnic->fnic_max_tag_id; tag++) { |
03298552 | 1694 | abt_tag = tag; |
1259c5dc SB |
1695 | io_lock = fnic_io_lock_tag(fnic, tag); |
1696 | spin_lock_irqsave(io_lock, flags); | |
5df6d737 | 1697 | sc = scsi_host_find_tag(fnic->lport->host, tag); |
1259c5dc SB |
1698 | if (!sc) { |
1699 | spin_unlock_irqrestore(io_lock, flags); | |
5df6d737 | 1700 | continue; |
1259c5dc | 1701 | } |
5df6d737 AJ |
1702 | |
1703 | cmd_rport = starget_to_rport(scsi_target(sc->device)); | |
1259c5dc SB |
1704 | if (rport != cmd_rport) { |
1705 | spin_unlock_irqrestore(io_lock, flags); | |
5df6d737 | 1706 | continue; |
1259c5dc | 1707 | } |
5df6d737 AJ |
1708 | |
1709 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
1710 | ||
1711 | if (!io_req || rport != cmd_rport) { | |
1712 | spin_unlock_irqrestore(io_lock, flags); | |
1713 | continue; | |
1714 | } | |
1715 | ||
03298552 | 1716 | if ((CMD_FLAGS(sc) & FNIC_DEVICE_RESET) && |
14eb5d90 | 1717 | (!(CMD_FLAGS(sc) & FNIC_DEV_RST_ISSUED))) { |
03298552 HP |
1718 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
1719 | "fnic_terminate_rport_io dev rst not pending sc 0x%p\n", | |
1720 | sc); | |
1721 | spin_unlock_irqrestore(io_lock, flags); | |
1722 | continue; | |
1723 | } | |
5df6d737 AJ |
1724 | /* |
1725 | * Found IO that is still pending with firmware and | |
1726 | * belongs to rport that went away | |
1727 | */ | |
1728 | if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) { | |
1729 | spin_unlock_irqrestore(io_lock, flags); | |
1730 | continue; | |
1731 | } | |
03298552 HP |
1732 | if (io_req->abts_done) { |
1733 | shost_printk(KERN_ERR, fnic->lport->host, | |
1734 | "fnic_terminate_rport_io: io_req->abts_done is set " | |
1735 | "state is %s\n", | |
1736 | fnic_ioreq_state_to_str(CMD_STATE(sc))); | |
1737 | } | |
14eb5d90 HP |
1738 | if (!(CMD_FLAGS(sc) & FNIC_IO_ISSUED)) { |
1739 | FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host, | |
1740 | "fnic_terminate_rport_io " | |
1741 | "IO not yet issued %p tag 0x%x flags " | |
1742 | "%x state %d\n", | |
1743 | sc, tag, CMD_FLAGS(sc), CMD_STATE(sc)); | |
1744 | } | |
5df6d737 AJ |
1745 | old_ioreq_state = CMD_STATE(sc); |
1746 | CMD_STATE(sc) = FNIC_IOREQ_ABTS_PENDING; | |
1747 | CMD_ABTS_STATUS(sc) = FCPIO_INVALID_CODE; | |
03298552 | 1748 | if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) { |
67125b02 | 1749 | atomic64_inc(&reset_stats->device_reset_terminates); |
03298552 HP |
1750 | abt_tag = (tag | FNIC_TAG_DEV_RST); |
1751 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
1752 | "fnic_terminate_rport_io dev rst sc 0x%p\n", sc); | |
1753 | } | |
5df6d737 AJ |
1754 | |
1755 | BUG_ON(io_req->abts_done); | |
1756 | ||
1757 | FNIC_SCSI_DBG(KERN_DEBUG, | |
1758 | fnic->lport->host, | |
1759 | "fnic_terminate_rport_io: Issuing abts\n"); | |
1760 | ||
1761 | spin_unlock_irqrestore(io_lock, flags); | |
1762 | ||
1763 | /* Now queue the abort command to firmware */ | |
1764 | int_to_scsilun(sc->device->lun, &fc_lun); | |
1765 | ||
03298552 | 1766 | if (fnic_queue_abort_io_req(fnic, abt_tag, |
5df6d737 AJ |
1767 | FCPIO_ITMF_ABT_TASK_TERM, |
1768 | fc_lun.scsi_lun, io_req)) { | |
1769 | /* | |
1770 | * Revert the cmd state back to old state, if | |
25985edc | 1771 | * it hasn't changed in between. This cmd will get |
5df6d737 AJ |
1772 | * aborted later by scsi_eh, or cleaned up during |
1773 | * lun reset | |
1774 | */ | |
5df6d737 AJ |
1775 | spin_lock_irqsave(io_lock, flags); |
1776 | if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) | |
1777 | CMD_STATE(sc) = old_ioreq_state; | |
1778 | spin_unlock_irqrestore(io_lock, flags); | |
03298552 HP |
1779 | } else { |
1780 | spin_lock_irqsave(io_lock, flags); | |
a0bf1ca2 HP |
1781 | if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) |
1782 | CMD_FLAGS(sc) |= FNIC_DEV_RST_TERM_ISSUED; | |
14eb5d90 HP |
1783 | else |
1784 | CMD_FLAGS(sc) |= FNIC_IO_INTERNAL_TERM_ISSUED; | |
03298552 | 1785 | spin_unlock_irqrestore(io_lock, flags); |
67125b02 HP |
1786 | atomic64_inc(&term_stats->terminates); |
1787 | term_cnt++; | |
5df6d737 AJ |
1788 | } |
1789 | } | |
67125b02 HP |
1790 | if (term_cnt > atomic64_read(&term_stats->max_terminates)) |
1791 | atomic64_set(&term_stats->max_terminates, term_cnt); | |
5df6d737 AJ |
1792 | |
1793 | } | |
1794 | ||
5df6d737 AJ |
1795 | /* |
1796 | * This function is exported to SCSI for sending abort cmnds. | |
1797 | * A SCSI IO is represented by a io_req in the driver. | |
1798 | * The ioreq is linked to the SCSI Cmd, thus a link with the ULP's IO. | |
1799 | */ | |
1800 | int fnic_abort_cmd(struct scsi_cmnd *sc) | |
1801 | { | |
1802 | struct fc_lport *lp; | |
1803 | struct fnic *fnic; | |
4d7007b4 | 1804 | struct fnic_io_req *io_req = NULL; |
5df6d737 AJ |
1805 | struct fc_rport *rport; |
1806 | spinlock_t *io_lock; | |
1807 | unsigned long flags; | |
14eb5d90 | 1808 | unsigned long start_time = 0; |
5df6d737 | 1809 | int ret = SUCCESS; |
14eb5d90 | 1810 | u32 task_req = 0; |
5df6d737 | 1811 | struct scsi_lun fc_lun; |
67125b02 HP |
1812 | struct fnic_stats *fnic_stats; |
1813 | struct abort_stats *abts_stats; | |
1814 | struct terminate_stats *term_stats; | |
66818663 | 1815 | enum fnic_ioreq_state old_ioreq_state; |
03298552 | 1816 | int tag; |
445d2960 | 1817 | unsigned long abt_issued_time; |
5df6d737 AJ |
1818 | DECLARE_COMPLETION_ONSTACK(tm_done); |
1819 | ||
1820 | /* Wait for rport to unblock */ | |
65d430fa | 1821 | fc_block_scsi_eh(sc); |
5df6d737 AJ |
1822 | |
1823 | /* Get local-port, check ready and link up */ | |
1824 | lp = shost_priv(sc->device->host); | |
1825 | ||
1826 | fnic = lport_priv(lp); | |
67125b02 HP |
1827 | fnic_stats = &fnic->fnic_stats; |
1828 | abts_stats = &fnic->fnic_stats.abts_stats; | |
1829 | term_stats = &fnic->fnic_stats.term_stats; | |
1830 | ||
0db6f435 | 1831 | rport = starget_to_rport(scsi_target(sc->device)); |
03298552 HP |
1832 | tag = sc->request->tag; |
1833 | FNIC_SCSI_DBG(KERN_DEBUG, | |
1834 | fnic->lport->host, | |
9cb78c16 | 1835 | "Abort Cmd called FCID 0x%x, LUN 0x%llx TAG %x flags %x\n", |
03298552 HP |
1836 | rport->port_id, sc->device->lun, tag, CMD_FLAGS(sc)); |
1837 | ||
1838 | CMD_FLAGS(sc) = FNIC_NO_FLAGS; | |
1839 | ||
5df6d737 AJ |
1840 | if (lp->state != LPORT_ST_READY || !(lp->link_up)) { |
1841 | ret = FAILED; | |
1842 | goto fnic_abort_cmd_end; | |
1843 | } | |
1844 | ||
1845 | /* | |
1846 | * Avoid a race between SCSI issuing the abort and the device | |
1847 | * completing the command. | |
1848 | * | |
1849 | * If the command is already completed by the fw cmpl code, | |
1850 | * we just return SUCCESS from here. This means that the abort | |
1851 | * succeeded. In the SCSI ML, since the timeout for command has | |
1852 | * happened, the completion wont actually complete the command | |
1853 | * and it will be considered as an aborted command | |
1854 | * | |
1855 | * The CMD_SP will not be cleared except while holding io_req_lock. | |
1856 | */ | |
1857 | io_lock = fnic_io_lock_hash(fnic, sc); | |
1858 | spin_lock_irqsave(io_lock, flags); | |
1859 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
1860 | if (!io_req) { | |
1861 | spin_unlock_irqrestore(io_lock, flags); | |
1862 | goto fnic_abort_cmd_end; | |
1863 | } | |
1864 | ||
1865 | io_req->abts_done = &tm_done; | |
1866 | ||
1867 | if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) { | |
1868 | spin_unlock_irqrestore(io_lock, flags); | |
1869 | goto wait_pending; | |
1870 | } | |
445d2960 SK |
1871 | |
1872 | abt_issued_time = jiffies_to_msecs(jiffies) - jiffies_to_msecs(io_req->start_time); | |
1873 | if (abt_issued_time <= 6000) | |
1874 | atomic64_inc(&abts_stats->abort_issued_btw_0_to_6_sec); | |
1875 | else if (abt_issued_time > 6000 && abt_issued_time <= 20000) | |
1876 | atomic64_inc(&abts_stats->abort_issued_btw_6_to_20_sec); | |
1877 | else if (abt_issued_time > 20000 && abt_issued_time <= 30000) | |
1878 | atomic64_inc(&abts_stats->abort_issued_btw_20_to_30_sec); | |
1879 | else if (abt_issued_time > 30000 && abt_issued_time <= 40000) | |
1880 | atomic64_inc(&abts_stats->abort_issued_btw_30_to_40_sec); | |
1881 | else if (abt_issued_time > 40000 && abt_issued_time <= 50000) | |
1882 | atomic64_inc(&abts_stats->abort_issued_btw_40_to_50_sec); | |
1883 | else if (abt_issued_time > 50000 && abt_issued_time <= 60000) | |
1884 | atomic64_inc(&abts_stats->abort_issued_btw_50_to_60_sec); | |
1885 | else | |
1886 | atomic64_inc(&abts_stats->abort_issued_greater_than_60_sec); | |
1887 | ||
1888 | FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host, | |
1889 | "CBD Opcode: %02x Abort issued time: %lu msec\n", sc->cmnd[0], abt_issued_time); | |
5df6d737 AJ |
1890 | /* |
1891 | * Command is still pending, need to abort it | |
1892 | * If the firmware completes the command after this point, | |
1893 | * the completion wont be done till mid-layer, since abort | |
1894 | * has already started. | |
1895 | */ | |
66818663 | 1896 | old_ioreq_state = CMD_STATE(sc); |
5df6d737 AJ |
1897 | CMD_STATE(sc) = FNIC_IOREQ_ABTS_PENDING; |
1898 | CMD_ABTS_STATUS(sc) = FCPIO_INVALID_CODE; | |
1899 | ||
1900 | spin_unlock_irqrestore(io_lock, flags); | |
1901 | ||
1902 | /* | |
1903 | * Check readiness of the remote port. If the path to remote | |
1904 | * port is up, then send abts to the remote port to terminate | |
1905 | * the IO. Else, just locally terminate the IO in the firmware | |
1906 | */ | |
5df6d737 AJ |
1907 | if (fc_remote_port_chkready(rport) == 0) |
1908 | task_req = FCPIO_ITMF_ABT_TASK; | |
67125b02 HP |
1909 | else { |
1910 | atomic64_inc(&fnic_stats->misc_stats.rport_not_ready); | |
5df6d737 | 1911 | task_req = FCPIO_ITMF_ABT_TASK_TERM; |
67125b02 | 1912 | } |
5df6d737 AJ |
1913 | |
1914 | /* Now queue the abort command to firmware */ | |
1915 | int_to_scsilun(sc->device->lun, &fc_lun); | |
1916 | ||
1917 | if (fnic_queue_abort_io_req(fnic, sc->request->tag, task_req, | |
1918 | fc_lun.scsi_lun, io_req)) { | |
1919 | spin_lock_irqsave(io_lock, flags); | |
66818663 HS |
1920 | if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) |
1921 | CMD_STATE(sc) = old_ioreq_state; | |
5df6d737 AJ |
1922 | io_req = (struct fnic_io_req *)CMD_SP(sc); |
1923 | if (io_req) | |
1924 | io_req->abts_done = NULL; | |
1925 | spin_unlock_irqrestore(io_lock, flags); | |
1926 | ret = FAILED; | |
1927 | goto fnic_abort_cmd_end; | |
1928 | } | |
67125b02 | 1929 | if (task_req == FCPIO_ITMF_ABT_TASK) { |
14eb5d90 | 1930 | CMD_FLAGS(sc) |= FNIC_IO_ABTS_ISSUED; |
67125b02 HP |
1931 | atomic64_inc(&fnic_stats->abts_stats.aborts); |
1932 | } else { | |
14eb5d90 | 1933 | CMD_FLAGS(sc) |= FNIC_IO_TERM_ISSUED; |
67125b02 HP |
1934 | atomic64_inc(&fnic_stats->term_stats.terminates); |
1935 | } | |
5df6d737 AJ |
1936 | |
1937 | /* | |
1938 | * We queued an abort IO, wait for its completion. | |
1939 | * Once the firmware completes the abort command, it will | |
1940 | * wake up this thread. | |
1941 | */ | |
1942 | wait_pending: | |
1943 | wait_for_completion_timeout(&tm_done, | |
1944 | msecs_to_jiffies | |
1945 | (2 * fnic->config.ra_tov + | |
1946 | fnic->config.ed_tov)); | |
1947 | ||
1948 | /* Check the abort status */ | |
1949 | spin_lock_irqsave(io_lock, flags); | |
1950 | ||
1951 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
1952 | if (!io_req) { | |
67125b02 | 1953 | atomic64_inc(&fnic_stats->io_stats.ioreq_null); |
5df6d737 | 1954 | spin_unlock_irqrestore(io_lock, flags); |
14eb5d90 | 1955 | CMD_FLAGS(sc) |= FNIC_IO_ABT_TERM_REQ_NULL; |
5df6d737 AJ |
1956 | ret = FAILED; |
1957 | goto fnic_abort_cmd_end; | |
1958 | } | |
1959 | io_req->abts_done = NULL; | |
1960 | ||
1961 | /* fw did not complete abort, timed out */ | |
1259c5dc | 1962 | if (CMD_ABTS_STATUS(sc) == FCPIO_INVALID_CODE) { |
5df6d737 | 1963 | spin_unlock_irqrestore(io_lock, flags); |
67125b02 | 1964 | if (task_req == FCPIO_ITMF_ABT_TASK) { |
67125b02 HP |
1965 | atomic64_inc(&abts_stats->abort_drv_timeouts); |
1966 | } else { | |
67125b02 HP |
1967 | atomic64_inc(&term_stats->terminate_drv_timeouts); |
1968 | } | |
14eb5d90 | 1969 | CMD_FLAGS(sc) |= FNIC_IO_ABT_TERM_TIMED_OUT; |
5df6d737 AJ |
1970 | ret = FAILED; |
1971 | goto fnic_abort_cmd_end; | |
1972 | } | |
1973 | ||
efc7a288 AC |
1974 | /* IO out of order */ |
1975 | ||
1976 | if (!(CMD_FLAGS(sc) & (FNIC_IO_ABORTED | FNIC_IO_DONE))) { | |
1977 | spin_unlock_irqrestore(io_lock, flags); | |
1978 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
1979 | "Issuing Host reset due to out of order IO\n"); | |
1980 | ||
1981 | if (fnic_host_reset(sc) == FAILED) { | |
1982 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
1983 | "fnic_host_reset failed.\n"); | |
1984 | } | |
1985 | ret = FAILED; | |
1986 | goto fnic_abort_cmd_end; | |
1987 | } | |
1988 | ||
1259c5dc SB |
1989 | CMD_STATE(sc) = FNIC_IOREQ_ABTS_COMPLETE; |
1990 | ||
691a837c | 1991 | start_time = io_req->start_time; |
5df6d737 AJ |
1992 | /* |
1993 | * firmware completed the abort, check the status, | |
691a837c SK |
1994 | * free the io_req if successful. If abort fails, |
1995 | * Device reset will clean the I/O. | |
5df6d737 | 1996 | */ |
691a837c SK |
1997 | if (CMD_ABTS_STATUS(sc) == FCPIO_SUCCESS) |
1998 | CMD_SP(sc) = NULL; | |
1999 | else { | |
5df6d737 | 2000 | ret = FAILED; |
691a837c SK |
2001 | spin_unlock_irqrestore(io_lock, flags); |
2002 | goto fnic_abort_cmd_end; | |
2003 | } | |
5df6d737 AJ |
2004 | |
2005 | spin_unlock_irqrestore(io_lock, flags); | |
2006 | ||
2007 | fnic_release_ioreq_buf(fnic, io_req, sc); | |
2008 | mempool_free(io_req, fnic->io_req_pool); | |
2009 | ||
691a837c SK |
2010 | if (sc->scsi_done) { |
2011 | /* Call SCSI completion function to complete the IO */ | |
2012 | sc->result = (DID_ABORT << 16); | |
2013 | sc->scsi_done(sc); | |
7ef539c8 SK |
2014 | atomic64_dec(&fnic_stats->io_stats.active_ios); |
2015 | if (atomic64_read(&fnic->io_cmpl_skip)) | |
2016 | atomic64_dec(&fnic->io_cmpl_skip); | |
2017 | else | |
2018 | atomic64_inc(&fnic_stats->io_stats.io_completions); | |
691a837c SK |
2019 | } |
2020 | ||
5df6d737 | 2021 | fnic_abort_cmd_end: |
4d7007b4 HP |
2022 | FNIC_TRACE(fnic_abort_cmd, sc->device->host->host_no, |
2023 | sc->request->tag, sc, | |
2024 | jiffies_to_msecs(jiffies - start_time), | |
2025 | 0, ((u64)sc->cmnd[0] << 32 | | |
2026 | (u64)sc->cmnd[2] << 24 | (u64)sc->cmnd[3] << 16 | | |
2027 | (u64)sc->cmnd[4] << 8 | sc->cmnd[5]), | |
2028 | (((u64)CMD_FLAGS(sc) << 32) | CMD_STATE(sc))); | |
2029 | ||
5df6d737 | 2030 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
14eb5d90 | 2031 | "Returning from abort cmd type %x %s\n", task_req, |
5df6d737 AJ |
2032 | (ret == SUCCESS) ? |
2033 | "SUCCESS" : "FAILED"); | |
2034 | return ret; | |
2035 | } | |
2036 | ||
2037 | static inline int fnic_queue_dr_io_req(struct fnic *fnic, | |
2038 | struct scsi_cmnd *sc, | |
2039 | struct fnic_io_req *io_req) | |
2040 | { | |
2041 | struct vnic_wq_copy *wq = &fnic->wq_copy[0]; | |
03298552 | 2042 | struct Scsi_Host *host = fnic->lport->host; |
67125b02 | 2043 | struct misc_stats *misc_stats = &fnic->fnic_stats.misc_stats; |
5df6d737 AJ |
2044 | struct scsi_lun fc_lun; |
2045 | int ret = 0; | |
2046 | unsigned long intr_flags; | |
2047 | ||
03298552 HP |
2048 | spin_lock_irqsave(host->host_lock, intr_flags); |
2049 | if (unlikely(fnic_chk_state_flags_locked(fnic, | |
2050 | FNIC_FLAGS_IO_BLOCKED))) { | |
2051 | spin_unlock_irqrestore(host->host_lock, intr_flags); | |
2052 | return FAILED; | |
2053 | } else | |
2054 | atomic_inc(&fnic->in_flight); | |
2055 | spin_unlock_irqrestore(host->host_lock, intr_flags); | |
2056 | ||
5df6d737 AJ |
2057 | spin_lock_irqsave(&fnic->wq_copy_lock[0], intr_flags); |
2058 | ||
2059 | if (vnic_wq_copy_desc_avail(wq) <= fnic->wq_copy_desc_low[0]) | |
2060 | free_wq_copy_descs(fnic, wq); | |
2061 | ||
2062 | if (!vnic_wq_copy_desc_avail(wq)) { | |
14eb5d90 HP |
2063 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
2064 | "queue_dr_io_req failure - no descriptors\n"); | |
67125b02 | 2065 | atomic64_inc(&misc_stats->devrst_cpwq_alloc_failures); |
5df6d737 AJ |
2066 | ret = -EAGAIN; |
2067 | goto lr_io_req_end; | |
2068 | } | |
2069 | ||
2070 | /* fill in the lun info */ | |
2071 | int_to_scsilun(sc->device->lun, &fc_lun); | |
2072 | ||
2073 | fnic_queue_wq_copy_desc_itmf(wq, sc->request->tag | FNIC_TAG_DEV_RST, | |
2074 | 0, FCPIO_ITMF_LUN_RESET, SCSI_NO_TAG, | |
2075 | fc_lun.scsi_lun, io_req->port_id, | |
2076 | fnic->config.ra_tov, fnic->config.ed_tov); | |
2077 | ||
67125b02 HP |
2078 | atomic64_inc(&fnic->fnic_stats.fw_stats.active_fw_reqs); |
2079 | if (atomic64_read(&fnic->fnic_stats.fw_stats.active_fw_reqs) > | |
2080 | atomic64_read(&fnic->fnic_stats.fw_stats.max_fw_reqs)) | |
2081 | atomic64_set(&fnic->fnic_stats.fw_stats.max_fw_reqs, | |
2082 | atomic64_read(&fnic->fnic_stats.fw_stats.active_fw_reqs)); | |
2083 | ||
5df6d737 AJ |
2084 | lr_io_req_end: |
2085 | spin_unlock_irqrestore(&fnic->wq_copy_lock[0], intr_flags); | |
03298552 | 2086 | atomic_dec(&fnic->in_flight); |
5df6d737 AJ |
2087 | |
2088 | return ret; | |
2089 | } | |
2090 | ||
2091 | /* | |
2092 | * Clean up any pending aborts on the lun | |
2093 | * For each outstanding IO on this lun, whose abort is not completed by fw, | |
2094 | * issue a local abort. Wait for abort to complete. Return 0 if all commands | |
2095 | * successfully aborted, 1 otherwise | |
2096 | */ | |
2097 | static int fnic_clean_pending_aborts(struct fnic *fnic, | |
a36f5dd0 SK |
2098 | struct scsi_cmnd *lr_sc, |
2099 | bool new_sc) | |
2100 | ||
5df6d737 | 2101 | { |
a0bf1ca2 | 2102 | int tag, abt_tag; |
5df6d737 AJ |
2103 | struct fnic_io_req *io_req; |
2104 | spinlock_t *io_lock; | |
2105 | unsigned long flags; | |
2106 | int ret = 0; | |
2107 | struct scsi_cmnd *sc; | |
5df6d737 AJ |
2108 | struct scsi_lun fc_lun; |
2109 | struct scsi_device *lun_dev = lr_sc->device; | |
2110 | DECLARE_COMPLETION_ONSTACK(tm_done); | |
a0bf1ca2 | 2111 | enum fnic_ioreq_state old_ioreq_state; |
5df6d737 | 2112 | |
fc85799e | 2113 | for (tag = 0; tag < fnic->fnic_max_tag_id; tag++) { |
1259c5dc SB |
2114 | io_lock = fnic_io_lock_tag(fnic, tag); |
2115 | spin_lock_irqsave(io_lock, flags); | |
5df6d737 AJ |
2116 | sc = scsi_host_find_tag(fnic->lport->host, tag); |
2117 | /* | |
a36f5dd0 SK |
2118 | * ignore this lun reset cmd if issued using new SC |
2119 | * or cmds that do not belong to this lun | |
5df6d737 | 2120 | */ |
a36f5dd0 | 2121 | if (!sc || ((sc == lr_sc) && new_sc) || sc->device != lun_dev) { |
1259c5dc | 2122 | spin_unlock_irqrestore(io_lock, flags); |
5df6d737 | 2123 | continue; |
1259c5dc | 2124 | } |
5df6d737 AJ |
2125 | |
2126 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
2127 | ||
2128 | if (!io_req || sc->device != lun_dev) { | |
2129 | spin_unlock_irqrestore(io_lock, flags); | |
2130 | continue; | |
2131 | } | |
2132 | ||
2133 | /* | |
2134 | * Found IO that is still pending with firmware and | |
2135 | * belongs to the LUN that we are resetting | |
2136 | */ | |
2137 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
2138 | "Found IO in %s on lun\n", | |
2139 | fnic_ioreq_state_to_str(CMD_STATE(sc))); | |
2140 | ||
a0bf1ca2 HP |
2141 | if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) { |
2142 | spin_unlock_irqrestore(io_lock, flags); | |
2143 | continue; | |
2144 | } | |
2145 | if ((CMD_FLAGS(sc) & FNIC_DEVICE_RESET) && | |
14eb5d90 | 2146 | (!(CMD_FLAGS(sc) & FNIC_DEV_RST_ISSUED))) { |
a0bf1ca2 HP |
2147 | FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host, |
2148 | "%s dev rst not pending sc 0x%p\n", __func__, | |
2149 | sc); | |
2150 | spin_unlock_irqrestore(io_lock, flags); | |
2151 | continue; | |
2152 | } | |
1259c5dc SB |
2153 | |
2154 | if (io_req->abts_done) | |
2155 | shost_printk(KERN_ERR, fnic->lport->host, | |
2156 | "%s: io_req->abts_done is set state is %s\n", | |
2157 | __func__, fnic_ioreq_state_to_str(CMD_STATE(sc))); | |
a0bf1ca2 HP |
2158 | old_ioreq_state = CMD_STATE(sc); |
2159 | /* | |
2160 | * Any pending IO issued prior to reset is expected to be | |
2161 | * in abts pending state, if not we need to set | |
2162 | * FNIC_IOREQ_ABTS_PENDING to indicate the IO is abort pending. | |
2163 | * When IO is completed, the IO will be handed over and | |
2164 | * handled in this function. | |
2165 | */ | |
2166 | CMD_STATE(sc) = FNIC_IOREQ_ABTS_PENDING; | |
2167 | ||
a0bf1ca2 HP |
2168 | BUG_ON(io_req->abts_done); |
2169 | ||
2170 | abt_tag = tag; | |
2171 | if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) { | |
2172 | abt_tag |= FNIC_TAG_DEV_RST; | |
2173 | FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host, | |
2174 | "%s: dev rst sc 0x%p\n", __func__, sc); | |
2175 | } | |
5df6d737 AJ |
2176 | |
2177 | CMD_ABTS_STATUS(sc) = FCPIO_INVALID_CODE; | |
2178 | io_req->abts_done = &tm_done; | |
2179 | spin_unlock_irqrestore(io_lock, flags); | |
2180 | ||
2181 | /* Now queue the abort command to firmware */ | |
2182 | int_to_scsilun(sc->device->lun, &fc_lun); | |
5df6d737 | 2183 | |
a0bf1ca2 | 2184 | if (fnic_queue_abort_io_req(fnic, abt_tag, |
5df6d737 AJ |
2185 | FCPIO_ITMF_ABT_TASK_TERM, |
2186 | fc_lun.scsi_lun, io_req)) { | |
2187 | spin_lock_irqsave(io_lock, flags); | |
2188 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
2189 | if (io_req) | |
2190 | io_req->abts_done = NULL; | |
a0bf1ca2 HP |
2191 | if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) |
2192 | CMD_STATE(sc) = old_ioreq_state; | |
5df6d737 AJ |
2193 | spin_unlock_irqrestore(io_lock, flags); |
2194 | ret = 1; | |
2195 | goto clean_pending_aborts_end; | |
a0bf1ca2 HP |
2196 | } else { |
2197 | spin_lock_irqsave(io_lock, flags); | |
2198 | if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) | |
2199 | CMD_FLAGS(sc) |= FNIC_DEV_RST_TERM_ISSUED; | |
2200 | spin_unlock_irqrestore(io_lock, flags); | |
5df6d737 | 2201 | } |
14eb5d90 | 2202 | CMD_FLAGS(sc) |= FNIC_IO_INTERNAL_TERM_ISSUED; |
5df6d737 AJ |
2203 | |
2204 | wait_for_completion_timeout(&tm_done, | |
2205 | msecs_to_jiffies | |
2206 | (fnic->config.ed_tov)); | |
2207 | ||
2208 | /* Recheck cmd state to check if it is now aborted */ | |
2209 | spin_lock_irqsave(io_lock, flags); | |
2210 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
2211 | if (!io_req) { | |
2212 | spin_unlock_irqrestore(io_lock, flags); | |
14eb5d90 | 2213 | CMD_FLAGS(sc) |= FNIC_IO_ABT_TERM_REQ_NULL; |
a0bf1ca2 | 2214 | continue; |
5df6d737 AJ |
2215 | } |
2216 | ||
2217 | io_req->abts_done = NULL; | |
2218 | ||
2219 | /* if abort is still pending with fw, fail */ | |
1259c5dc | 2220 | if (CMD_ABTS_STATUS(sc) == FCPIO_INVALID_CODE) { |
5df6d737 | 2221 | spin_unlock_irqrestore(io_lock, flags); |
14eb5d90 | 2222 | CMD_FLAGS(sc) |= FNIC_IO_ABT_TERM_DONE; |
5df6d737 AJ |
2223 | ret = 1; |
2224 | goto clean_pending_aborts_end; | |
2225 | } | |
1259c5dc | 2226 | CMD_STATE(sc) = FNIC_IOREQ_ABTS_COMPLETE; |
a36f5dd0 SK |
2227 | |
2228 | /* original sc used for lr is handled by dev reset code */ | |
2229 | if (sc != lr_sc) | |
2230 | CMD_SP(sc) = NULL; | |
5df6d737 AJ |
2231 | spin_unlock_irqrestore(io_lock, flags); |
2232 | ||
a36f5dd0 SK |
2233 | /* original sc used for lr is handled by dev reset code */ |
2234 | if (sc != lr_sc) { | |
2235 | fnic_release_ioreq_buf(fnic, io_req, sc); | |
2236 | mempool_free(io_req, fnic->io_req_pool); | |
2237 | } | |
2238 | ||
2239 | /* | |
2240 | * Any IO is returned during reset, it needs to call scsi_done | |
2241 | * to return the scsi_cmnd to upper layer. | |
2242 | */ | |
2243 | if (sc->scsi_done) { | |
2244 | /* Set result to let upper SCSI layer retry */ | |
2245 | sc->result = DID_RESET << 16; | |
2246 | sc->scsi_done(sc); | |
2247 | } | |
5df6d737 AJ |
2248 | } |
2249 | ||
a0bf1ca2 HP |
2250 | schedule_timeout(msecs_to_jiffies(2 * fnic->config.ed_tov)); |
2251 | ||
2252 | /* walk again to check, if IOs are still pending in fw */ | |
2253 | if (fnic_is_abts_pending(fnic, lr_sc)) | |
2254 | ret = FAILED; | |
2255 | ||
5df6d737 AJ |
2256 | clean_pending_aborts_end: |
2257 | return ret; | |
2258 | } | |
2259 | ||
03298552 HP |
2260 | /** |
2261 | * fnic_scsi_host_start_tag | |
2262 | * Allocates tagid from host's tag list | |
2263 | **/ | |
2264 | static inline int | |
2265 | fnic_scsi_host_start_tag(struct fnic *fnic, struct scsi_cmnd *sc) | |
2266 | { | |
2267 | struct blk_queue_tag *bqt = fnic->lport->host->bqt; | |
2268 | int tag, ret = SCSI_NO_TAG; | |
2269 | ||
2270 | BUG_ON(!bqt); | |
2271 | if (!bqt) { | |
2272 | pr_err("Tags are not supported\n"); | |
2273 | goto end; | |
2274 | } | |
2275 | ||
2276 | do { | |
2277 | tag = find_next_zero_bit(bqt->tag_map, bqt->max_depth, 1); | |
2278 | if (tag >= bqt->max_depth) { | |
2279 | pr_err("Tag allocation failure\n"); | |
2280 | goto end; | |
2281 | } | |
2282 | } while (test_and_set_bit(tag, bqt->tag_map)); | |
2283 | ||
2284 | bqt->tag_index[tag] = sc->request; | |
2285 | sc->request->tag = tag; | |
2286 | sc->tag = tag; | |
2287 | if (!sc->request->special) | |
2288 | sc->request->special = sc; | |
2289 | ||
2290 | ret = tag; | |
2291 | ||
2292 | end: | |
2293 | return ret; | |
2294 | } | |
2295 | ||
2296 | /** | |
2297 | * fnic_scsi_host_end_tag | |
2298 | * frees tag allocated by fnic_scsi_host_start_tag. | |
2299 | **/ | |
2300 | static inline void | |
2301 | fnic_scsi_host_end_tag(struct fnic *fnic, struct scsi_cmnd *sc) | |
2302 | { | |
2303 | struct blk_queue_tag *bqt = fnic->lport->host->bqt; | |
2304 | int tag = sc->request->tag; | |
2305 | ||
2306 | if (tag == SCSI_NO_TAG) | |
2307 | return; | |
2308 | ||
2309 | BUG_ON(!bqt || !bqt->tag_index[tag]); | |
2310 | if (!bqt) | |
2311 | return; | |
2312 | ||
2313 | bqt->tag_index[tag] = NULL; | |
2314 | clear_bit(tag, bqt->tag_map); | |
2315 | ||
2316 | return; | |
2317 | } | |
2318 | ||
5df6d737 AJ |
2319 | /* |
2320 | * SCSI Eh thread issues a Lun Reset when one or more commands on a LUN | |
2321 | * fail to get aborted. It calls driver's eh_device_reset with a SCSI command | |
2322 | * on the LUN. | |
2323 | */ | |
2324 | int fnic_device_reset(struct scsi_cmnd *sc) | |
2325 | { | |
2326 | struct fc_lport *lp; | |
2327 | struct fnic *fnic; | |
4d7007b4 | 2328 | struct fnic_io_req *io_req = NULL; |
5df6d737 AJ |
2329 | struct fc_rport *rport; |
2330 | int status; | |
2331 | int ret = FAILED; | |
2332 | spinlock_t *io_lock; | |
2333 | unsigned long flags; | |
14eb5d90 | 2334 | unsigned long start_time = 0; |
03298552 | 2335 | struct scsi_lun fc_lun; |
67125b02 HP |
2336 | struct fnic_stats *fnic_stats; |
2337 | struct reset_stats *reset_stats; | |
4d7007b4 | 2338 | int tag = 0; |
5df6d737 | 2339 | DECLARE_COMPLETION_ONSTACK(tm_done); |
03298552 | 2340 | int tag_gen_flag = 0; /*to track tags allocated by fnic driver*/ |
a36f5dd0 | 2341 | bool new_sc = 0; |
5df6d737 AJ |
2342 | |
2343 | /* Wait for rport to unblock */ | |
65d430fa | 2344 | fc_block_scsi_eh(sc); |
5df6d737 AJ |
2345 | |
2346 | /* Get local-port, check ready and link up */ | |
2347 | lp = shost_priv(sc->device->host); | |
2348 | ||
2349 | fnic = lport_priv(lp); | |
67125b02 HP |
2350 | fnic_stats = &fnic->fnic_stats; |
2351 | reset_stats = &fnic->fnic_stats.reset_stats; | |
2352 | ||
2353 | atomic64_inc(&reset_stats->device_resets); | |
5df6d737 | 2354 | |
0db6f435 RK |
2355 | rport = starget_to_rport(scsi_target(sc->device)); |
2356 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
9cb78c16 | 2357 | "Device reset called FCID 0x%x, LUN 0x%llx sc 0x%p\n", |
03298552 | 2358 | rport->port_id, sc->device->lun, sc); |
5df6d737 AJ |
2359 | |
2360 | if (lp->state != LPORT_ST_READY || !(lp->link_up)) | |
2361 | goto fnic_device_reset_end; | |
2362 | ||
2363 | /* Check if remote port up */ | |
67125b02 HP |
2364 | if (fc_remote_port_chkready(rport)) { |
2365 | atomic64_inc(&fnic_stats->misc_stats.rport_not_ready); | |
5df6d737 | 2366 | goto fnic_device_reset_end; |
67125b02 | 2367 | } |
5df6d737 | 2368 | |
14eb5d90 | 2369 | CMD_FLAGS(sc) = FNIC_DEVICE_RESET; |
03298552 HP |
2370 | /* Allocate tag if not present */ |
2371 | ||
2372 | tag = sc->request->tag; | |
2373 | if (unlikely(tag < 0)) { | |
4d637168 CH |
2374 | /* |
2375 | * XXX(hch): current the midlayer fakes up a struct | |
2376 | * request for the explicit reset ioctls, and those | |
2377 | * don't have a tag allocated to them. The below | |
2378 | * code pokes into midlayer structures to paper over | |
2379 | * this design issue, but that won't work for blk-mq. | |
2380 | * | |
2381 | * Either someone who can actually test the hardware | |
2382 | * will have to come up with a similar hack for the | |
2383 | * blk-mq case, or we'll have to bite the bullet and | |
2384 | * fix the way the EH ioctls work for real, but until | |
2385 | * that happens we fail these explicit requests here. | |
2386 | */ | |
4d637168 | 2387 | |
03298552 HP |
2388 | tag = fnic_scsi_host_start_tag(fnic, sc); |
2389 | if (unlikely(tag == SCSI_NO_TAG)) | |
2390 | goto fnic_device_reset_end; | |
2391 | tag_gen_flag = 1; | |
a36f5dd0 | 2392 | new_sc = 1; |
03298552 | 2393 | } |
5df6d737 AJ |
2394 | io_lock = fnic_io_lock_hash(fnic, sc); |
2395 | spin_lock_irqsave(io_lock, flags); | |
2396 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
2397 | ||
2398 | /* | |
2399 | * If there is a io_req attached to this command, then use it, | |
2400 | * else allocate a new one. | |
2401 | */ | |
2402 | if (!io_req) { | |
2403 | io_req = mempool_alloc(fnic->io_req_pool, GFP_ATOMIC); | |
2404 | if (!io_req) { | |
2405 | spin_unlock_irqrestore(io_lock, flags); | |
2406 | goto fnic_device_reset_end; | |
2407 | } | |
2408 | memset(io_req, 0, sizeof(*io_req)); | |
2409 | io_req->port_id = rport->port_id; | |
2410 | CMD_SP(sc) = (char *)io_req; | |
2411 | } | |
2412 | io_req->dr_done = &tm_done; | |
2413 | CMD_STATE(sc) = FNIC_IOREQ_CMD_PENDING; | |
2414 | CMD_LR_STATUS(sc) = FCPIO_INVALID_CODE; | |
2415 | spin_unlock_irqrestore(io_lock, flags); | |
2416 | ||
03298552 | 2417 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, "TAG %x\n", tag); |
5df6d737 AJ |
2418 | |
2419 | /* | |
2420 | * issue the device reset, if enqueue failed, clean up the ioreq | |
2421 | * and break assoc with scsi cmd | |
2422 | */ | |
2423 | if (fnic_queue_dr_io_req(fnic, sc, io_req)) { | |
2424 | spin_lock_irqsave(io_lock, flags); | |
2425 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
2426 | if (io_req) | |
2427 | io_req->dr_done = NULL; | |
2428 | goto fnic_device_reset_clean; | |
2429 | } | |
03298552 | 2430 | spin_lock_irqsave(io_lock, flags); |
14eb5d90 | 2431 | CMD_FLAGS(sc) |= FNIC_DEV_RST_ISSUED; |
03298552 | 2432 | spin_unlock_irqrestore(io_lock, flags); |
5df6d737 AJ |
2433 | |
2434 | /* | |
2435 | * Wait on the local completion for LUN reset. The io_req may be | |
2436 | * freed while we wait since we hold no lock. | |
2437 | */ | |
2438 | wait_for_completion_timeout(&tm_done, | |
2439 | msecs_to_jiffies(FNIC_LUN_RESET_TIMEOUT)); | |
2440 | ||
2441 | spin_lock_irqsave(io_lock, flags); | |
2442 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
2443 | if (!io_req) { | |
2444 | spin_unlock_irqrestore(io_lock, flags); | |
03298552 HP |
2445 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
2446 | "io_req is null tag 0x%x sc 0x%p\n", tag, sc); | |
5df6d737 AJ |
2447 | goto fnic_device_reset_end; |
2448 | } | |
2449 | io_req->dr_done = NULL; | |
2450 | ||
2451 | status = CMD_LR_STATUS(sc); | |
5df6d737 AJ |
2452 | |
2453 | /* | |
2454 | * If lun reset not completed, bail out with failed. io_req | |
2455 | * gets cleaned up during higher levels of EH | |
2456 | */ | |
2457 | if (status == FCPIO_INVALID_CODE) { | |
67125b02 | 2458 | atomic64_inc(&reset_stats->device_reset_timeouts); |
5df6d737 AJ |
2459 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
2460 | "Device reset timed out\n"); | |
03298552 HP |
2461 | CMD_FLAGS(sc) |= FNIC_DEV_RST_TIMED_OUT; |
2462 | spin_unlock_irqrestore(io_lock, flags); | |
2463 | int_to_scsilun(sc->device->lun, &fc_lun); | |
2464 | /* | |
1259c5dc SB |
2465 | * Issue abort and terminate on device reset request. |
2466 | * If q'ing of terminate fails, retry it after a delay. | |
03298552 HP |
2467 | */ |
2468 | while (1) { | |
2469 | spin_lock_irqsave(io_lock, flags); | |
2470 | if (CMD_FLAGS(sc) & FNIC_DEV_RST_TERM_ISSUED) { | |
2471 | spin_unlock_irqrestore(io_lock, flags); | |
2472 | break; | |
2473 | } | |
2474 | spin_unlock_irqrestore(io_lock, flags); | |
2475 | if (fnic_queue_abort_io_req(fnic, | |
2476 | tag | FNIC_TAG_DEV_RST, | |
2477 | FCPIO_ITMF_ABT_TASK_TERM, | |
2478 | fc_lun.scsi_lun, io_req)) { | |
2479 | wait_for_completion_timeout(&tm_done, | |
2480 | msecs_to_jiffies(FNIC_ABT_TERM_DELAY_TIMEOUT)); | |
2481 | } else { | |
2482 | spin_lock_irqsave(io_lock, flags); | |
2483 | CMD_FLAGS(sc) |= FNIC_DEV_RST_TERM_ISSUED; | |
2484 | CMD_STATE(sc) = FNIC_IOREQ_ABTS_PENDING; | |
2485 | io_req->abts_done = &tm_done; | |
2486 | spin_unlock_irqrestore(io_lock, flags); | |
2487 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
2488 | "Abort and terminate issued on Device reset " | |
2489 | "tag 0x%x sc 0x%p\n", tag, sc); | |
2490 | break; | |
2491 | } | |
2492 | } | |
2493 | while (1) { | |
2494 | spin_lock_irqsave(io_lock, flags); | |
2495 | if (!(CMD_FLAGS(sc) & FNIC_DEV_RST_DONE)) { | |
2496 | spin_unlock_irqrestore(io_lock, flags); | |
2497 | wait_for_completion_timeout(&tm_done, | |
2498 | msecs_to_jiffies(FNIC_LUN_RESET_TIMEOUT)); | |
2499 | break; | |
2500 | } else { | |
2501 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
2502 | io_req->abts_done = NULL; | |
2503 | goto fnic_device_reset_clean; | |
2504 | } | |
2505 | } | |
2506 | } else { | |
2507 | spin_unlock_irqrestore(io_lock, flags); | |
5df6d737 AJ |
2508 | } |
2509 | ||
2510 | /* Completed, but not successful, clean up the io_req, return fail */ | |
2511 | if (status != FCPIO_SUCCESS) { | |
2512 | spin_lock_irqsave(io_lock, flags); | |
2513 | FNIC_SCSI_DBG(KERN_DEBUG, | |
2514 | fnic->lport->host, | |
2515 | "Device reset completed - failed\n"); | |
2516 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
2517 | goto fnic_device_reset_clean; | |
2518 | } | |
2519 | ||
2520 | /* | |
2521 | * Clean up any aborts on this lun that have still not | |
2522 | * completed. If any of these fail, then LUN reset fails. | |
2523 | * clean_pending_aborts cleans all cmds on this lun except | |
2524 | * the lun reset cmd. If all cmds get cleaned, the lun reset | |
2525 | * succeeds | |
2526 | */ | |
a36f5dd0 | 2527 | if (fnic_clean_pending_aborts(fnic, sc, new_sc)) { |
5df6d737 AJ |
2528 | spin_lock_irqsave(io_lock, flags); |
2529 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
2530 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
2531 | "Device reset failed" | |
2532 | " since could not abort all IOs\n"); | |
2533 | goto fnic_device_reset_clean; | |
2534 | } | |
2535 | ||
2536 | /* Clean lun reset command */ | |
2537 | spin_lock_irqsave(io_lock, flags); | |
2538 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
2539 | if (io_req) | |
2540 | /* Completed, and successful */ | |
2541 | ret = SUCCESS; | |
2542 | ||
2543 | fnic_device_reset_clean: | |
2544 | if (io_req) | |
2545 | CMD_SP(sc) = NULL; | |
2546 | ||
2547 | spin_unlock_irqrestore(io_lock, flags); | |
2548 | ||
2549 | if (io_req) { | |
14eb5d90 | 2550 | start_time = io_req->start_time; |
5df6d737 AJ |
2551 | fnic_release_ioreq_buf(fnic, io_req, sc); |
2552 | mempool_free(io_req, fnic->io_req_pool); | |
2553 | } | |
2554 | ||
2555 | fnic_device_reset_end: | |
4d7007b4 HP |
2556 | FNIC_TRACE(fnic_device_reset, sc->device->host->host_no, |
2557 | sc->request->tag, sc, | |
2558 | jiffies_to_msecs(jiffies - start_time), | |
2559 | 0, ((u64)sc->cmnd[0] << 32 | | |
2560 | (u64)sc->cmnd[2] << 24 | (u64)sc->cmnd[3] << 16 | | |
2561 | (u64)sc->cmnd[4] << 8 | sc->cmnd[5]), | |
2562 | (((u64)CMD_FLAGS(sc) << 32) | CMD_STATE(sc))); | |
2563 | ||
03298552 HP |
2564 | /* free tag if it is allocated */ |
2565 | if (unlikely(tag_gen_flag)) | |
2566 | fnic_scsi_host_end_tag(fnic, sc); | |
2567 | ||
5df6d737 AJ |
2568 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
2569 | "Returning from device reset %s\n", | |
2570 | (ret == SUCCESS) ? | |
2571 | "SUCCESS" : "FAILED"); | |
67125b02 HP |
2572 | |
2573 | if (ret == FAILED) | |
2574 | atomic64_inc(&reset_stats->device_reset_failures); | |
2575 | ||
5df6d737 AJ |
2576 | return ret; |
2577 | } | |
2578 | ||
2579 | /* Clean up all IOs, clean up libFC local port */ | |
2580 | int fnic_reset(struct Scsi_Host *shost) | |
2581 | { | |
2582 | struct fc_lport *lp; | |
2583 | struct fnic *fnic; | |
441fbd25 | 2584 | int ret = 0; |
67125b02 | 2585 | struct reset_stats *reset_stats; |
5df6d737 AJ |
2586 | |
2587 | lp = shost_priv(shost); | |
2588 | fnic = lport_priv(lp); | |
67125b02 | 2589 | reset_stats = &fnic->fnic_stats.reset_stats; |
5df6d737 AJ |
2590 | |
2591 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
2592 | "fnic_reset called\n"); | |
2593 | ||
67125b02 HP |
2594 | atomic64_inc(&reset_stats->fnic_resets); |
2595 | ||
5df6d737 AJ |
2596 | /* |
2597 | * Reset local port, this will clean up libFC exchanges, | |
2598 | * reset remote port sessions, and if link is up, begin flogi | |
2599 | */ | |
31c0a631 | 2600 | ret = fc_lport_reset(lp); |
5df6d737 AJ |
2601 | |
2602 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
2603 | "Returning from fnic reset %s\n", | |
441fbd25 | 2604 | (ret == 0) ? |
5df6d737 AJ |
2605 | "SUCCESS" : "FAILED"); |
2606 | ||
67125b02 HP |
2607 | if (ret == 0) |
2608 | atomic64_inc(&reset_stats->fnic_reset_completions); | |
2609 | else | |
2610 | atomic64_inc(&reset_stats->fnic_reset_failures); | |
2611 | ||
5df6d737 AJ |
2612 | return ret; |
2613 | } | |
2614 | ||
2615 | /* | |
2616 | * SCSI Error handling calls driver's eh_host_reset if all prior | |
2617 | * error handling levels return FAILED. If host reset completes | |
2618 | * successfully, and if link is up, then Fabric login begins. | |
2619 | * | |
2620 | * Host Reset is the highest level of error recovery. If this fails, then | |
2621 | * host is offlined by SCSI. | |
2622 | * | |
2623 | */ | |
2624 | int fnic_host_reset(struct scsi_cmnd *sc) | |
2625 | { | |
2626 | int ret; | |
2627 | unsigned long wait_host_tmo; | |
2628 | struct Scsi_Host *shost = sc->device->host; | |
2629 | struct fc_lport *lp = shost_priv(shost); | |
9698b6f4 SK |
2630 | struct fnic *fnic = lport_priv(lp); |
2631 | unsigned long flags; | |
2632 | ||
2633 | spin_lock_irqsave(&fnic->fnic_lock, flags); | |
2634 | if (fnic->internal_reset_inprogress == 0) { | |
2635 | fnic->internal_reset_inprogress = 1; | |
2636 | } else { | |
2637 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
2638 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
2639 | "host reset in progress skipping another host reset\n"); | |
2640 | return SUCCESS; | |
2641 | } | |
2642 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
5df6d737 AJ |
2643 | |
2644 | /* | |
2645 | * If fnic_reset is successful, wait for fabric login to complete | |
2646 | * scsi-ml tries to send a TUR to every device if host reset is | |
2647 | * successful, so before returning to scsi, fabric should be up | |
2648 | */ | |
441fbd25 | 2649 | ret = (fnic_reset(shost) == 0) ? SUCCESS : FAILED; |
5df6d737 AJ |
2650 | if (ret == SUCCESS) { |
2651 | wait_host_tmo = jiffies + FNIC_HOST_RESET_SETTLE_TIME * HZ; | |
2652 | ret = FAILED; | |
2653 | while (time_before(jiffies, wait_host_tmo)) { | |
2654 | if ((lp->state == LPORT_ST_READY) && | |
2655 | (lp->link_up)) { | |
2656 | ret = SUCCESS; | |
2657 | break; | |
2658 | } | |
2659 | ssleep(1); | |
2660 | } | |
2661 | } | |
2662 | ||
9698b6f4 SK |
2663 | spin_lock_irqsave(&fnic->fnic_lock, flags); |
2664 | fnic->internal_reset_inprogress = 0; | |
2665 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
5df6d737 AJ |
2666 | return ret; |
2667 | } | |
2668 | ||
2669 | /* | |
2670 | * This fxn is called from libFC when host is removed | |
2671 | */ | |
2672 | void fnic_scsi_abort_io(struct fc_lport *lp) | |
2673 | { | |
2674 | int err = 0; | |
2675 | unsigned long flags; | |
2676 | enum fnic_state old_state; | |
2677 | struct fnic *fnic = lport_priv(lp); | |
2678 | DECLARE_COMPLETION_ONSTACK(remove_wait); | |
2679 | ||
2680 | /* Issue firmware reset for fnic, wait for reset to complete */ | |
03298552 | 2681 | retry_fw_reset: |
5df6d737 | 2682 | spin_lock_irqsave(&fnic->fnic_lock, flags); |
03298552 HP |
2683 | if (unlikely(fnic->state == FNIC_IN_FC_TRANS_ETH_MODE)) { |
2684 | /* fw reset is in progress, poll for its completion */ | |
2685 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
2686 | schedule_timeout(msecs_to_jiffies(100)); | |
2687 | goto retry_fw_reset; | |
2688 | } | |
2689 | ||
5df6d737 AJ |
2690 | fnic->remove_wait = &remove_wait; |
2691 | old_state = fnic->state; | |
2692 | fnic->state = FNIC_IN_FC_TRANS_ETH_MODE; | |
78112e55 | 2693 | fnic_update_mac_locked(fnic, fnic->ctlr.ctl_src_addr); |
5df6d737 AJ |
2694 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); |
2695 | ||
2696 | err = fnic_fw_reset_handler(fnic); | |
2697 | if (err) { | |
2698 | spin_lock_irqsave(&fnic->fnic_lock, flags); | |
2699 | if (fnic->state == FNIC_IN_FC_TRANS_ETH_MODE) | |
2700 | fnic->state = old_state; | |
2701 | fnic->remove_wait = NULL; | |
2702 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
2703 | return; | |
2704 | } | |
2705 | ||
2706 | /* Wait for firmware reset to complete */ | |
2707 | wait_for_completion_timeout(&remove_wait, | |
2708 | msecs_to_jiffies(FNIC_RMDEVICE_TIMEOUT)); | |
2709 | ||
2710 | spin_lock_irqsave(&fnic->fnic_lock, flags); | |
2711 | fnic->remove_wait = NULL; | |
2712 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
2713 | "fnic_scsi_abort_io %s\n", | |
2714 | (fnic->state == FNIC_IN_ETH_MODE) ? | |
2715 | "SUCCESS" : "FAILED"); | |
2716 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
2717 | ||
2718 | } | |
2719 | ||
2720 | /* | |
2721 | * This fxn called from libFC to clean up driver IO state on link down | |
2722 | */ | |
2723 | void fnic_scsi_cleanup(struct fc_lport *lp) | |
2724 | { | |
2725 | unsigned long flags; | |
2726 | enum fnic_state old_state; | |
2727 | struct fnic *fnic = lport_priv(lp); | |
2728 | ||
2729 | /* issue fw reset */ | |
03298552 | 2730 | retry_fw_reset: |
5df6d737 | 2731 | spin_lock_irqsave(&fnic->fnic_lock, flags); |
03298552 HP |
2732 | if (unlikely(fnic->state == FNIC_IN_FC_TRANS_ETH_MODE)) { |
2733 | /* fw reset is in progress, poll for its completion */ | |
2734 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
2735 | schedule_timeout(msecs_to_jiffies(100)); | |
2736 | goto retry_fw_reset; | |
2737 | } | |
5df6d737 AJ |
2738 | old_state = fnic->state; |
2739 | fnic->state = FNIC_IN_FC_TRANS_ETH_MODE; | |
78112e55 | 2740 | fnic_update_mac_locked(fnic, fnic->ctlr.ctl_src_addr); |
5df6d737 AJ |
2741 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); |
2742 | ||
2743 | if (fnic_fw_reset_handler(fnic)) { | |
2744 | spin_lock_irqsave(&fnic->fnic_lock, flags); | |
2745 | if (fnic->state == FNIC_IN_FC_TRANS_ETH_MODE) | |
2746 | fnic->state = old_state; | |
2747 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
2748 | } | |
2749 | ||
2750 | } | |
2751 | ||
2752 | void fnic_empty_scsi_cleanup(struct fc_lport *lp) | |
2753 | { | |
2754 | } | |
2755 | ||
2756 | void fnic_exch_mgr_reset(struct fc_lport *lp, u32 sid, u32 did) | |
2757 | { | |
2758 | struct fnic *fnic = lport_priv(lp); | |
2759 | ||
2760 | /* Non-zero sid, nothing to do */ | |
2761 | if (sid) | |
2762 | goto call_fc_exch_mgr_reset; | |
2763 | ||
2764 | if (did) { | |
2765 | fnic_rport_exch_reset(fnic, did); | |
2766 | goto call_fc_exch_mgr_reset; | |
2767 | } | |
2768 | ||
2769 | /* | |
2770 | * sid = 0, did = 0 | |
2771 | * link down or device being removed | |
2772 | */ | |
2773 | if (!fnic->in_remove) | |
2774 | fnic_scsi_cleanup(lp); | |
2775 | else | |
2776 | fnic_scsi_abort_io(lp); | |
2777 | ||
2778 | /* call libFC exch mgr reset to reset its exchanges */ | |
2779 | call_fc_exch_mgr_reset: | |
2780 | fc_exch_mgr_reset(lp, sid, did); | |
2781 | ||
2782 | } | |
a0bf1ca2 HP |
2783 | |
2784 | /* | |
2785 | * fnic_is_abts_pending() is a helper function that | |
2786 | * walks through tag map to check if there is any IOs pending,if there is one, | |
2787 | * then it returns 1 (true), otherwise 0 (false) | |
2788 | * if @lr_sc is non NULL, then it checks IOs specific to particular LUN, | |
2789 | * otherwise, it checks for all IOs. | |
2790 | */ | |
2791 | int fnic_is_abts_pending(struct fnic *fnic, struct scsi_cmnd *lr_sc) | |
2792 | { | |
2793 | int tag; | |
2794 | struct fnic_io_req *io_req; | |
2795 | spinlock_t *io_lock; | |
2796 | unsigned long flags; | |
2797 | int ret = 0; | |
2798 | struct scsi_cmnd *sc; | |
2799 | struct scsi_device *lun_dev = NULL; | |
2800 | ||
2801 | if (lr_sc) | |
2802 | lun_dev = lr_sc->device; | |
2803 | ||
2804 | /* walk again to check, if IOs are still pending in fw */ | |
fc85799e | 2805 | for (tag = 0; tag < fnic->fnic_max_tag_id; tag++) { |
a0bf1ca2 HP |
2806 | sc = scsi_host_find_tag(fnic->lport->host, tag); |
2807 | /* | |
2808 | * ignore this lun reset cmd or cmds that do not belong to | |
2809 | * this lun | |
2810 | */ | |
2811 | if (!sc || (lr_sc && (sc->device != lun_dev || sc == lr_sc))) | |
2812 | continue; | |
2813 | ||
2814 | io_lock = fnic_io_lock_hash(fnic, sc); | |
2815 | spin_lock_irqsave(io_lock, flags); | |
2816 | ||
2817 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
2818 | ||
2819 | if (!io_req || sc->device != lun_dev) { | |
2820 | spin_unlock_irqrestore(io_lock, flags); | |
2821 | continue; | |
2822 | } | |
2823 | ||
2824 | /* | |
2825 | * Found IO that is still pending with firmware and | |
2826 | * belongs to the LUN that we are resetting | |
2827 | */ | |
2828 | FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host, | |
2829 | "Found IO in %s on lun\n", | |
2830 | fnic_ioreq_state_to_str(CMD_STATE(sc))); | |
2831 | ||
5d65f918 | 2832 | if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) |
a0bf1ca2 | 2833 | ret = 1; |
5d65f918 | 2834 | spin_unlock_irqrestore(io_lock, flags); |
a0bf1ca2 HP |
2835 | } |
2836 | ||
2837 | return ret; | |
2838 | } |