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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) | |
7f9b0f77 | 129 | dma_unmap_single(&fnic->pdev->dev, io_req->sgl_list_pa, |
5df6d737 | 130 | sizeof(io_req->sgl_list[0]) * io_req->sgl_cnt, |
7f9b0f77 | 131 | DMA_TO_DEVICE); |
5df6d737 AJ |
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) | |
7f9b0f77 CH |
138 | dma_unmap_single(&fnic->pdev->dev, io_req->sense_buf_pa, |
139 | SCSI_SENSE_BUFFERSIZE, DMA_FROM_DEVICE); | |
5df6d737 AJ |
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 | { | |
03298552 | 183 | unsigned long flags = 0; |
68f03bd1 | 184 | unsigned long host_lock_flags = 0; |
03298552 | 185 | |
68f03bd1 SK |
186 | spin_lock_irqsave(&fnic->fnic_lock, flags); |
187 | spin_lock_irqsave(fnic->lport->host->host_lock, host_lock_flags); | |
03298552 HP |
188 | |
189 | if (clearbits) | |
190 | fnic->state_flags &= ~st_flags; | |
191 | else | |
192 | fnic->state_flags |= st_flags; | |
193 | ||
68f03bd1 SK |
194 | spin_unlock_irqrestore(fnic->lport->host->host_lock, host_lock_flags); |
195 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
03298552 HP |
196 | |
197 | return; | |
198 | } | |
199 | ||
200 | ||
5df6d737 AJ |
201 | /* |
202 | * fnic_fw_reset_handler | |
203 | * Routine to send reset msg to fw | |
204 | */ | |
205 | int fnic_fw_reset_handler(struct fnic *fnic) | |
206 | { | |
207 | struct vnic_wq_copy *wq = &fnic->wq_copy[0]; | |
208 | int ret = 0; | |
209 | unsigned long flags; | |
210 | ||
03298552 HP |
211 | /* indicate fwreset to io path */ |
212 | fnic_set_state_flags(fnic, FNIC_FLAGS_FWRESET); | |
213 | ||
78112e55 JE |
214 | skb_queue_purge(&fnic->frame_queue); |
215 | skb_queue_purge(&fnic->tx_queue); | |
216 | ||
03298552 HP |
217 | /* wait for io cmpl */ |
218 | while (atomic_read(&fnic->in_flight)) | |
219 | schedule_timeout(msecs_to_jiffies(1)); | |
220 | ||
5df6d737 AJ |
221 | spin_lock_irqsave(&fnic->wq_copy_lock[0], flags); |
222 | ||
223 | if (vnic_wq_copy_desc_avail(wq) <= fnic->wq_copy_desc_low[0]) | |
224 | free_wq_copy_descs(fnic, wq); | |
225 | ||
226 | if (!vnic_wq_copy_desc_avail(wq)) | |
227 | ret = -EAGAIN; | |
67125b02 | 228 | else { |
5df6d737 | 229 | fnic_queue_wq_copy_desc_fw_reset(wq, SCSI_NO_TAG); |
67125b02 HP |
230 | atomic64_inc(&fnic->fnic_stats.fw_stats.active_fw_reqs); |
231 | if (atomic64_read(&fnic->fnic_stats.fw_stats.active_fw_reqs) > | |
232 | atomic64_read(&fnic->fnic_stats.fw_stats.max_fw_reqs)) | |
233 | atomic64_set(&fnic->fnic_stats.fw_stats.max_fw_reqs, | |
234 | atomic64_read( | |
235 | &fnic->fnic_stats.fw_stats.active_fw_reqs)); | |
236 | } | |
5df6d737 AJ |
237 | |
238 | spin_unlock_irqrestore(&fnic->wq_copy_lock[0], flags); | |
239 | ||
67125b02 HP |
240 | if (!ret) { |
241 | atomic64_inc(&fnic->fnic_stats.reset_stats.fw_resets); | |
5df6d737 AJ |
242 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
243 | "Issued fw reset\n"); | |
67125b02 | 244 | } else { |
03298552 | 245 | fnic_clear_state_flags(fnic, FNIC_FLAGS_FWRESET); |
5df6d737 AJ |
246 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
247 | "Failed to issue fw reset\n"); | |
03298552 HP |
248 | } |
249 | ||
5df6d737 AJ |
250 | return ret; |
251 | } | |
252 | ||
253 | ||
254 | /* | |
255 | * fnic_flogi_reg_handler | |
256 | * Routine to send flogi register msg to fw | |
257 | */ | |
78112e55 | 258 | int fnic_flogi_reg_handler(struct fnic *fnic, u32 fc_id) |
5df6d737 AJ |
259 | { |
260 | struct vnic_wq_copy *wq = &fnic->wq_copy[0]; | |
78112e55 JE |
261 | enum fcpio_flogi_reg_format_type format; |
262 | struct fc_lport *lp = fnic->lport; | |
5df6d737 AJ |
263 | u8 gw_mac[ETH_ALEN]; |
264 | int ret = 0; | |
265 | unsigned long flags; | |
266 | ||
267 | spin_lock_irqsave(&fnic->wq_copy_lock[0], flags); | |
268 | ||
269 | if (vnic_wq_copy_desc_avail(wq) <= fnic->wq_copy_desc_low[0]) | |
270 | free_wq_copy_descs(fnic, wq); | |
271 | ||
272 | if (!vnic_wq_copy_desc_avail(wq)) { | |
273 | ret = -EAGAIN; | |
274 | goto flogi_reg_ioreq_end; | |
275 | } | |
276 | ||
78112e55 | 277 | if (fnic->ctlr.map_dest) { |
5df6d737 | 278 | memset(gw_mac, 0xff, ETH_ALEN); |
78112e55 JE |
279 | format = FCPIO_FLOGI_REG_DEF_DEST; |
280 | } else { | |
281 | memcpy(gw_mac, fnic->ctlr.dest_addr, ETH_ALEN); | |
282 | format = FCPIO_FLOGI_REG_GW_DEST; | |
283 | } | |
5df6d737 | 284 | |
78112e55 JE |
285 | if ((fnic->config.flags & VFCF_FIP_CAPABLE) && !fnic->ctlr.map_dest) { |
286 | fnic_queue_wq_copy_desc_fip_reg(wq, SCSI_NO_TAG, | |
287 | fc_id, gw_mac, | |
288 | fnic->data_src_addr, | |
289 | lp->r_a_tov, lp->e_d_tov); | |
290 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
291 | "FLOGI FIP reg issued fcid %x src %pM dest %pM\n", | |
292 | fc_id, fnic->data_src_addr, gw_mac); | |
293 | } else { | |
294 | fnic_queue_wq_copy_desc_flogi_reg(wq, SCSI_NO_TAG, | |
295 | format, fc_id, gw_mac); | |
296 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
297 | "FLOGI reg issued fcid %x map %d dest %pM\n", | |
298 | fc_id, fnic->ctlr.map_dest, gw_mac); | |
299 | } | |
5df6d737 | 300 | |
67125b02 HP |
301 | atomic64_inc(&fnic->fnic_stats.fw_stats.active_fw_reqs); |
302 | if (atomic64_read(&fnic->fnic_stats.fw_stats.active_fw_reqs) > | |
303 | atomic64_read(&fnic->fnic_stats.fw_stats.max_fw_reqs)) | |
304 | atomic64_set(&fnic->fnic_stats.fw_stats.max_fw_reqs, | |
305 | atomic64_read(&fnic->fnic_stats.fw_stats.active_fw_reqs)); | |
306 | ||
5df6d737 AJ |
307 | flogi_reg_ioreq_end: |
308 | spin_unlock_irqrestore(&fnic->wq_copy_lock[0], flags); | |
5df6d737 AJ |
309 | return ret; |
310 | } | |
311 | ||
312 | /* | |
313 | * fnic_queue_wq_copy_desc | |
314 | * Routine to enqueue a wq copy desc | |
315 | */ | |
316 | static inline int fnic_queue_wq_copy_desc(struct fnic *fnic, | |
317 | struct vnic_wq_copy *wq, | |
318 | struct fnic_io_req *io_req, | |
319 | struct scsi_cmnd *sc, | |
87a2d34b | 320 | int sg_count) |
5df6d737 AJ |
321 | { |
322 | struct scatterlist *sg; | |
323 | struct fc_rport *rport = starget_to_rport(scsi_target(sc->device)); | |
324 | struct fc_rport_libfc_priv *rp = rport->dd_data; | |
325 | struct host_sg_desc *desc; | |
67125b02 | 326 | struct misc_stats *misc_stats = &fnic->fnic_stats.misc_stats; |
5df6d737 AJ |
327 | unsigned int i; |
328 | unsigned long intr_flags; | |
329 | int flags; | |
330 | u8 exch_flags; | |
331 | struct scsi_lun fc_lun; | |
5df6d737 AJ |
332 | |
333 | if (sg_count) { | |
5df6d737 AJ |
334 | /* For each SGE, create a device desc entry */ |
335 | desc = io_req->sgl_list; | |
336 | for_each_sg(scsi_sglist(sc), sg, sg_count, i) { | |
337 | desc->addr = cpu_to_le64(sg_dma_address(sg)); | |
338 | desc->len = cpu_to_le32(sg_dma_len(sg)); | |
339 | desc->_resvd = 0; | |
340 | desc++; | |
341 | } | |
342 | ||
7f9b0f77 CH |
343 | io_req->sgl_list_pa = dma_map_single(&fnic->pdev->dev, |
344 | io_req->sgl_list, | |
345 | sizeof(io_req->sgl_list[0]) * sg_count, | |
346 | DMA_TO_DEVICE); | |
347 | if (dma_mapping_error(&fnic->pdev->dev, io_req->sgl_list_pa)) { | |
348 | printk(KERN_ERR "DMA mapping failed\n"); | |
fd6ddfa4 ML |
349 | return SCSI_MLQUEUE_HOST_BUSY; |
350 | } | |
5df6d737 AJ |
351 | } |
352 | ||
7f9b0f77 | 353 | io_req->sense_buf_pa = dma_map_single(&fnic->pdev->dev, |
5df6d737 AJ |
354 | sc->sense_buffer, |
355 | SCSI_SENSE_BUFFERSIZE, | |
7f9b0f77 CH |
356 | DMA_FROM_DEVICE); |
357 | if (dma_mapping_error(&fnic->pdev->dev, io_req->sense_buf_pa)) { | |
358 | dma_unmap_single(&fnic->pdev->dev, io_req->sgl_list_pa, | |
fd6ddfa4 | 359 | sizeof(io_req->sgl_list[0]) * sg_count, |
7f9b0f77 CH |
360 | DMA_TO_DEVICE); |
361 | printk(KERN_ERR "DMA mapping failed\n"); | |
fd6ddfa4 ML |
362 | return SCSI_MLQUEUE_HOST_BUSY; |
363 | } | |
364 | ||
5df6d737 AJ |
365 | int_to_scsilun(sc->device->lun, &fc_lun); |
366 | ||
5df6d737 AJ |
367 | /* Enqueue the descriptor in the Copy WQ */ |
368 | spin_lock_irqsave(&fnic->wq_copy_lock[0], intr_flags); | |
369 | ||
370 | if (vnic_wq_copy_desc_avail(wq) <= fnic->wq_copy_desc_low[0]) | |
371 | free_wq_copy_descs(fnic, wq); | |
372 | ||
373 | if (unlikely(!vnic_wq_copy_desc_avail(wq))) { | |
374 | spin_unlock_irqrestore(&fnic->wq_copy_lock[0], intr_flags); | |
14eb5d90 HP |
375 | FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host, |
376 | "fnic_queue_wq_copy_desc failure - no descriptors\n"); | |
67125b02 | 377 | atomic64_inc(&misc_stats->io_cpwq_alloc_failures); |
5df6d737 AJ |
378 | return SCSI_MLQUEUE_HOST_BUSY; |
379 | } | |
380 | ||
381 | flags = 0; | |
382 | if (sc->sc_data_direction == DMA_FROM_DEVICE) | |
383 | flags = FCPIO_ICMND_RDDATA; | |
384 | else if (sc->sc_data_direction == DMA_TO_DEVICE) | |
385 | flags = FCPIO_ICMND_WRDATA; | |
386 | ||
387 | exch_flags = 0; | |
388 | if ((fnic->config.flags & VFCF_FCP_SEQ_LVL_ERR) && | |
389 | (rp->flags & FC_RP_FLAGS_RETRY)) | |
390 | exch_flags |= FCPIO_ICMND_SRFLAG_RETRY; | |
391 | ||
392 | fnic_queue_wq_copy_desc_icmnd_16(wq, sc->request->tag, | |
393 | 0, exch_flags, io_req->sgl_cnt, | |
394 | SCSI_SENSE_BUFFERSIZE, | |
395 | io_req->sgl_list_pa, | |
396 | io_req->sense_buf_pa, | |
397 | 0, /* scsi cmd ref, always 0 */ | |
50668633 CH |
398 | FCPIO_ICMND_PTA_SIMPLE, |
399 | /* scsi pri and tag */ | |
5df6d737 | 400 | flags, /* command flags */ |
4b53662b AJ |
401 | sc->cmnd, sc->cmd_len, |
402 | scsi_bufflen(sc), | |
5df6d737 AJ |
403 | fc_lun.scsi_lun, io_req->port_id, |
404 | rport->maxframe_size, rp->r_a_tov, | |
405 | rp->e_d_tov); | |
406 | ||
67125b02 HP |
407 | atomic64_inc(&fnic->fnic_stats.fw_stats.active_fw_reqs); |
408 | if (atomic64_read(&fnic->fnic_stats.fw_stats.active_fw_reqs) > | |
409 | atomic64_read(&fnic->fnic_stats.fw_stats.max_fw_reqs)) | |
410 | atomic64_set(&fnic->fnic_stats.fw_stats.max_fw_reqs, | |
411 | atomic64_read(&fnic->fnic_stats.fw_stats.active_fw_reqs)); | |
412 | ||
5df6d737 AJ |
413 | spin_unlock_irqrestore(&fnic->wq_copy_lock[0], intr_flags); |
414 | return 0; | |
415 | } | |
416 | ||
417 | /* | |
418 | * fnic_queuecommand | |
419 | * Routine to send a scsi cdb | |
420 | * Called with host_lock held and interrupts disabled. | |
421 | */ | |
f281233d | 422 | static int fnic_queuecommand_lck(struct scsi_cmnd *sc, void (*done)(struct scsi_cmnd *)) |
5df6d737 | 423 | { |
03298552 | 424 | struct fc_lport *lp = shost_priv(sc->device->host); |
5df6d737 | 425 | struct fc_rport *rport; |
4d7007b4 | 426 | struct fnic_io_req *io_req = NULL; |
03298552 | 427 | struct fnic *fnic = lport_priv(lp); |
67125b02 | 428 | struct fnic_stats *fnic_stats = &fnic->fnic_stats; |
5df6d737 AJ |
429 | struct vnic_wq_copy *wq; |
430 | int ret; | |
4d7007b4 HP |
431 | u64 cmd_trace; |
432 | int sg_count = 0; | |
41df7b02 | 433 | unsigned long flags = 0; |
5df6d737 | 434 | unsigned long ptr; |
41df7b02 | 435 | spinlock_t *io_lock = NULL; |
db196935 | 436 | int io_lock_acquired = 0; |
6008e96b | 437 | struct fc_rport_libfc_priv *rp; |
5df6d737 | 438 | |
03298552 HP |
439 | if (unlikely(fnic_chk_state_flags_locked(fnic, FNIC_FLAGS_IO_BLOCKED))) |
440 | return SCSI_MLQUEUE_HOST_BUSY; | |
441 | ||
5df6d737 | 442 | rport = starget_to_rport(scsi_target(sc->device)); |
6008e96b SK |
443 | if (!rport) { |
444 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
445 | "returning DID_NO_CONNECT for IO as rport is NULL\n"); | |
446 | sc->result = DID_NO_CONNECT << 16; | |
447 | done(sc); | |
448 | return 0; | |
449 | } | |
450 | ||
5df6d737 AJ |
451 | ret = fc_remote_port_chkready(rport); |
452 | if (ret) { | |
6008e96b SK |
453 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
454 | "rport is not ready\n"); | |
67125b02 | 455 | atomic64_inc(&fnic_stats->misc_stats.rport_not_ready); |
5df6d737 AJ |
456 | sc->result = ret; |
457 | done(sc); | |
458 | return 0; | |
459 | } | |
460 | ||
6008e96b | 461 | rp = rport->dd_data; |
4a1108d6 | 462 | if (!rp || rp->rp_state == RPORT_ST_DELETE) { |
6008e96b | 463 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
4a1108d6 SK |
464 | "rport 0x%x removed, returning DID_NO_CONNECT\n", |
465 | rport->port_id); | |
466 | ||
6008e96b SK |
467 | atomic64_inc(&fnic_stats->misc_stats.rport_not_ready); |
468 | sc->result = DID_NO_CONNECT<<16; | |
469 | done(sc); | |
470 | return 0; | |
35061e21 HS |
471 | } |
472 | ||
4a1108d6 SK |
473 | if (rp->rp_state != RPORT_ST_READY) { |
474 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
475 | "rport 0x%x in state 0x%x, returning DID_IMM_RETRY\n", | |
476 | rport->port_id, rp->rp_state); | |
477 | ||
478 | sc->result = DID_IMM_RETRY << 16; | |
479 | done(sc); | |
480 | return 0; | |
481 | } | |
482 | ||
5df6d737 AJ |
483 | if (lp->state != LPORT_ST_READY || !(lp->link_up)) |
484 | return SCSI_MLQUEUE_HOST_BUSY; | |
485 | ||
03298552 HP |
486 | atomic_inc(&fnic->in_flight); |
487 | ||
5df6d737 AJ |
488 | /* |
489 | * Release host lock, use driver resource specific locks from here. | |
490 | * Don't re-enable interrupts in case they were disabled prior to the | |
491 | * caller disabling them. | |
492 | */ | |
493 | spin_unlock(lp->host->host_lock); | |
14eb5d90 HP |
494 | CMD_STATE(sc) = FNIC_IOREQ_NOT_INITED; |
495 | CMD_FLAGS(sc) = FNIC_NO_FLAGS; | |
5df6d737 AJ |
496 | |
497 | /* Get a new io_req for this SCSI IO */ | |
5df6d737 AJ |
498 | io_req = mempool_alloc(fnic->io_req_pool, GFP_ATOMIC); |
499 | if (!io_req) { | |
67125b02 | 500 | atomic64_inc(&fnic_stats->io_stats.alloc_failures); |
5df6d737 AJ |
501 | ret = SCSI_MLQUEUE_HOST_BUSY; |
502 | goto out; | |
503 | } | |
504 | memset(io_req, 0, sizeof(*io_req)); | |
505 | ||
506 | /* Map the data buffer */ | |
507 | sg_count = scsi_dma_map(sc); | |
508 | if (sg_count < 0) { | |
4d7007b4 HP |
509 | FNIC_TRACE(fnic_queuecommand, sc->device->host->host_no, |
510 | sc->request->tag, sc, 0, sc->cmnd[0], | |
511 | sg_count, CMD_STATE(sc)); | |
5df6d737 AJ |
512 | mempool_free(io_req, fnic->io_req_pool); |
513 | goto out; | |
514 | } | |
515 | ||
516 | /* Determine the type of scatter/gather list we need */ | |
517 | io_req->sgl_cnt = sg_count; | |
518 | io_req->sgl_type = FNIC_SGL_CACHE_DFLT; | |
519 | if (sg_count > FNIC_DFLT_SG_DESC_CNT) | |
520 | io_req->sgl_type = FNIC_SGL_CACHE_MAX; | |
521 | ||
522 | if (sg_count) { | |
523 | io_req->sgl_list = | |
524 | mempool_alloc(fnic->io_sgl_pool[io_req->sgl_type], | |
0c79c742 | 525 | GFP_ATOMIC); |
5df6d737 | 526 | if (!io_req->sgl_list) { |
67125b02 | 527 | atomic64_inc(&fnic_stats->io_stats.alloc_failures); |
5df6d737 AJ |
528 | ret = SCSI_MLQUEUE_HOST_BUSY; |
529 | scsi_dma_unmap(sc); | |
530 | mempool_free(io_req, fnic->io_req_pool); | |
531 | goto out; | |
532 | } | |
533 | ||
534 | /* Cache sgl list allocated address before alignment */ | |
535 | io_req->sgl_list_alloc = io_req->sgl_list; | |
536 | ptr = (unsigned long) io_req->sgl_list; | |
537 | if (ptr % FNIC_SG_DESC_ALIGN) { | |
538 | io_req->sgl_list = (struct host_sg_desc *) | |
539 | (((unsigned long) ptr | |
540 | + FNIC_SG_DESC_ALIGN - 1) | |
541 | & ~(FNIC_SG_DESC_ALIGN - 1)); | |
542 | } | |
543 | } | |
544 | ||
41df7b02 HS |
545 | /* |
546 | * Will acquire lock defore setting to IO initialized. | |
547 | */ | |
548 | ||
549 | io_lock = fnic_io_lock_hash(fnic, sc); | |
550 | spin_lock_irqsave(io_lock, flags); | |
551 | ||
5df6d737 | 552 | /* initialize rest of io_req */ |
db196935 | 553 | io_lock_acquired = 1; |
5df6d737 | 554 | io_req->port_id = rport->port_id; |
14eb5d90 | 555 | io_req->start_time = jiffies; |
5df6d737 AJ |
556 | CMD_STATE(sc) = FNIC_IOREQ_CMD_PENDING; |
557 | CMD_SP(sc) = (char *)io_req; | |
14eb5d90 | 558 | CMD_FLAGS(sc) |= FNIC_IO_INITIALIZED; |
5df6d737 AJ |
559 | sc->scsi_done = done; |
560 | ||
561 | /* create copy wq desc and enqueue it */ | |
562 | wq = &fnic->wq_copy[0]; | |
563 | ret = fnic_queue_wq_copy_desc(fnic, wq, io_req, sc, sg_count); | |
564 | if (ret) { | |
565 | /* | |
566 | * In case another thread cancelled the request, | |
567 | * refetch the pointer under the lock. | |
568 | */ | |
4d7007b4 HP |
569 | FNIC_TRACE(fnic_queuecommand, sc->device->host->host_no, |
570 | sc->request->tag, sc, 0, 0, 0, | |
571 | (((u64)CMD_FLAGS(sc) << 32) | CMD_STATE(sc))); | |
5df6d737 AJ |
572 | io_req = (struct fnic_io_req *)CMD_SP(sc); |
573 | CMD_SP(sc) = NULL; | |
574 | CMD_STATE(sc) = FNIC_IOREQ_CMD_COMPLETE; | |
575 | spin_unlock_irqrestore(io_lock, flags); | |
576 | if (io_req) { | |
577 | fnic_release_ioreq_buf(fnic, io_req, sc); | |
578 | mempool_free(io_req, fnic->io_req_pool); | |
579 | } | |
41df7b02 HS |
580 | atomic_dec(&fnic->in_flight); |
581 | /* acquire host lock before returning to SCSI */ | |
582 | spin_lock(lp->host->host_lock); | |
583 | return ret; | |
14eb5d90 | 584 | } else { |
67125b02 HP |
585 | atomic64_inc(&fnic_stats->io_stats.active_ios); |
586 | atomic64_inc(&fnic_stats->io_stats.num_ios); | |
587 | if (atomic64_read(&fnic_stats->io_stats.active_ios) > | |
588 | atomic64_read(&fnic_stats->io_stats.max_active_ios)) | |
589 | atomic64_set(&fnic_stats->io_stats.max_active_ios, | |
590 | atomic64_read(&fnic_stats->io_stats.active_ios)); | |
591 | ||
14eb5d90 HP |
592 | /* REVISIT: Use per IO lock in the final code */ |
593 | CMD_FLAGS(sc) |= FNIC_IO_ISSUED; | |
5df6d737 AJ |
594 | } |
595 | out: | |
4d7007b4 HP |
596 | cmd_trace = ((u64)sc->cmnd[0] << 56 | (u64)sc->cmnd[7] << 40 | |
597 | (u64)sc->cmnd[8] << 32 | (u64)sc->cmnd[2] << 24 | | |
598 | (u64)sc->cmnd[3] << 16 | (u64)sc->cmnd[4] << 8 | | |
599 | sc->cmnd[5]); | |
600 | ||
601 | FNIC_TRACE(fnic_queuecommand, sc->device->host->host_no, | |
602 | sc->request->tag, sc, io_req, | |
603 | sg_count, cmd_trace, | |
604 | (((u64)CMD_FLAGS(sc) >> 32) | CMD_STATE(sc))); | |
41df7b02 HS |
605 | |
606 | /* if only we issued IO, will we have the io lock */ | |
db196935 | 607 | if (io_lock_acquired) |
41df7b02 HS |
608 | spin_unlock_irqrestore(io_lock, flags); |
609 | ||
03298552 | 610 | atomic_dec(&fnic->in_flight); |
5df6d737 AJ |
611 | /* acquire host lock before returning to SCSI */ |
612 | spin_lock(lp->host->host_lock); | |
613 | return ret; | |
614 | } | |
615 | ||
f281233d JG |
616 | DEF_SCSI_QCMD(fnic_queuecommand) |
617 | ||
5df6d737 AJ |
618 | /* |
619 | * fnic_fcpio_fw_reset_cmpl_handler | |
620 | * Routine to handle fw reset completion | |
621 | */ | |
622 | static int fnic_fcpio_fw_reset_cmpl_handler(struct fnic *fnic, | |
623 | struct fcpio_fw_req *desc) | |
624 | { | |
625 | u8 type; | |
626 | u8 hdr_status; | |
627 | struct fcpio_tag tag; | |
628 | int ret = 0; | |
5df6d737 | 629 | unsigned long flags; |
67125b02 | 630 | struct reset_stats *reset_stats = &fnic->fnic_stats.reset_stats; |
5df6d737 AJ |
631 | |
632 | fcpio_header_dec(&desc->hdr, &type, &hdr_status, &tag); | |
633 | ||
67125b02 HP |
634 | atomic64_inc(&reset_stats->fw_reset_completions); |
635 | ||
5df6d737 AJ |
636 | /* Clean up all outstanding io requests */ |
637 | fnic_cleanup_io(fnic, SCSI_NO_TAG); | |
638 | ||
67125b02 HP |
639 | atomic64_set(&fnic->fnic_stats.fw_stats.active_fw_reqs, 0); |
640 | atomic64_set(&fnic->fnic_stats.io_stats.active_ios, 0); | |
1cdf8bc1 | 641 | atomic64_set(&fnic->io_cmpl_skip, 0); |
67125b02 | 642 | |
5df6d737 AJ |
643 | spin_lock_irqsave(&fnic->fnic_lock, flags); |
644 | ||
5df6d737 AJ |
645 | /* fnic should be in FC_TRANS_ETH_MODE */ |
646 | if (fnic->state == FNIC_IN_FC_TRANS_ETH_MODE) { | |
647 | /* Check status of reset completion */ | |
648 | if (!hdr_status) { | |
649 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
650 | "reset cmpl success\n"); | |
651 | /* Ready to send flogi out */ | |
652 | fnic->state = FNIC_IN_ETH_MODE; | |
653 | } else { | |
654 | FNIC_SCSI_DBG(KERN_DEBUG, | |
655 | fnic->lport->host, | |
656 | "fnic fw_reset : failed %s\n", | |
657 | fnic_fcpio_status_to_str(hdr_status)); | |
658 | ||
659 | /* | |
660 | * Unable to change to eth mode, cannot send out flogi | |
661 | * Change state to fc mode, so that subsequent Flogi | |
662 | * requests from libFC will cause more attempts to | |
663 | * reset the firmware. Free the cached flogi | |
664 | */ | |
665 | fnic->state = FNIC_IN_FC_MODE; | |
67125b02 | 666 | atomic64_inc(&reset_stats->fw_reset_failures); |
5df6d737 AJ |
667 | ret = -1; |
668 | } | |
669 | } else { | |
670 | FNIC_SCSI_DBG(KERN_DEBUG, | |
671 | fnic->lport->host, | |
672 | "Unexpected state %s while processing" | |
673 | " reset cmpl\n", fnic_state_to_str(fnic->state)); | |
67125b02 | 674 | atomic64_inc(&reset_stats->fw_reset_failures); |
5df6d737 AJ |
675 | ret = -1; |
676 | } | |
677 | ||
678 | /* Thread removing device blocks till firmware reset is complete */ | |
679 | if (fnic->remove_wait) | |
680 | complete(fnic->remove_wait); | |
681 | ||
682 | /* | |
683 | * If fnic is being removed, or fw reset failed | |
684 | * free the flogi frame. Else, send it out | |
685 | */ | |
686 | if (fnic->remove_wait || ret) { | |
5df6d737 | 687 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); |
78112e55 | 688 | skb_queue_purge(&fnic->tx_queue); |
5df6d737 AJ |
689 | goto reset_cmpl_handler_end; |
690 | } | |
691 | ||
692 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
693 | ||
78112e55 | 694 | fnic_flush_tx(fnic); |
5df6d737 AJ |
695 | |
696 | reset_cmpl_handler_end: | |
03298552 HP |
697 | fnic_clear_state_flags(fnic, FNIC_FLAGS_FWRESET); |
698 | ||
5df6d737 AJ |
699 | return ret; |
700 | } | |
701 | ||
702 | /* | |
703 | * fnic_fcpio_flogi_reg_cmpl_handler | |
704 | * Routine to handle flogi register completion | |
705 | */ | |
706 | static int fnic_fcpio_flogi_reg_cmpl_handler(struct fnic *fnic, | |
707 | struct fcpio_fw_req *desc) | |
708 | { | |
709 | u8 type; | |
710 | u8 hdr_status; | |
711 | struct fcpio_tag tag; | |
712 | int ret = 0; | |
5df6d737 | 713 | unsigned long flags; |
5df6d737 AJ |
714 | |
715 | fcpio_header_dec(&desc->hdr, &type, &hdr_status, &tag); | |
716 | ||
717 | /* Update fnic state based on status of flogi reg completion */ | |
718 | spin_lock_irqsave(&fnic->fnic_lock, flags); | |
719 | ||
5df6d737 AJ |
720 | if (fnic->state == FNIC_IN_ETH_TRANS_FC_MODE) { |
721 | ||
722 | /* Check flogi registration completion status */ | |
723 | if (!hdr_status) { | |
724 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
725 | "flog reg succeeded\n"); | |
726 | fnic->state = FNIC_IN_FC_MODE; | |
727 | } else { | |
728 | FNIC_SCSI_DBG(KERN_DEBUG, | |
729 | fnic->lport->host, | |
730 | "fnic flogi reg :failed %s\n", | |
731 | fnic_fcpio_status_to_str(hdr_status)); | |
732 | fnic->state = FNIC_IN_ETH_MODE; | |
733 | ret = -1; | |
734 | } | |
735 | } else { | |
736 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
737 | "Unexpected fnic state %s while" | |
738 | " processing flogi reg completion\n", | |
739 | fnic_state_to_str(fnic->state)); | |
740 | ret = -1; | |
741 | } | |
742 | ||
78112e55 | 743 | if (!ret) { |
5df6d737 AJ |
744 | if (fnic->stop_rx_link_events) { |
745 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
746 | goto reg_cmpl_handler_end; | |
747 | } | |
5df6d737 AJ |
748 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); |
749 | ||
78112e55 | 750 | fnic_flush_tx(fnic); |
5df6d737 | 751 | queue_work(fnic_event_queue, &fnic->frame_work); |
5df6d737 AJ |
752 | } else { |
753 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
5df6d737 AJ |
754 | } |
755 | ||
756 | reg_cmpl_handler_end: | |
757 | return ret; | |
758 | } | |
759 | ||
760 | static inline int is_ack_index_in_range(struct vnic_wq_copy *wq, | |
761 | u16 request_out) | |
762 | { | |
763 | if (wq->to_clean_index <= wq->to_use_index) { | |
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 | } else { | |
769 | /* out of range, stale request_out index */ | |
770 | if (request_out < wq->to_clean_index && | |
771 | request_out >= wq->to_use_index) | |
772 | return 0; | |
773 | } | |
774 | /* request_out index is in range */ | |
775 | return 1; | |
776 | } | |
777 | ||
778 | ||
779 | /* | |
780 | * Mark that ack received and store the Ack index. If there are multiple | |
781 | * acks received before Tx thread cleans it up, the latest value will be | |
782 | * used which is correct behavior. This state should be in the copy Wq | |
783 | * instead of in the fnic | |
784 | */ | |
785 | static inline void fnic_fcpio_ack_handler(struct fnic *fnic, | |
786 | unsigned int cq_index, | |
787 | struct fcpio_fw_req *desc) | |
788 | { | |
789 | struct vnic_wq_copy *wq; | |
790 | u16 request_out = desc->u.ack.request_out; | |
791 | unsigned long flags; | |
4d7007b4 | 792 | u64 *ox_id_tag = (u64 *)(void *)desc; |
5df6d737 AJ |
793 | |
794 | /* mark the ack state */ | |
795 | wq = &fnic->wq_copy[cq_index - fnic->raw_wq_count - fnic->rq_count]; | |
796 | spin_lock_irqsave(&fnic->wq_copy_lock[0], flags); | |
797 | ||
67125b02 | 798 | fnic->fnic_stats.misc_stats.last_ack_time = jiffies; |
5df6d737 AJ |
799 | if (is_ack_index_in_range(wq, request_out)) { |
800 | fnic->fw_ack_index[0] = request_out; | |
801 | fnic->fw_ack_recd[0] = 1; | |
67125b02 HP |
802 | } else |
803 | atomic64_inc( | |
804 | &fnic->fnic_stats.misc_stats.ack_index_out_of_range); | |
805 | ||
5df6d737 | 806 | spin_unlock_irqrestore(&fnic->wq_copy_lock[0], flags); |
4d7007b4 HP |
807 | FNIC_TRACE(fnic_fcpio_ack_handler, |
808 | fnic->lport->host->host_no, 0, 0, ox_id_tag[2], ox_id_tag[3], | |
809 | ox_id_tag[4], ox_id_tag[5]); | |
5df6d737 AJ |
810 | } |
811 | ||
812 | /* | |
813 | * fnic_fcpio_icmnd_cmpl_handler | |
814 | * Routine to handle icmnd completions | |
815 | */ | |
816 | static void fnic_fcpio_icmnd_cmpl_handler(struct fnic *fnic, | |
817 | struct fcpio_fw_req *desc) | |
818 | { | |
819 | u8 type; | |
820 | u8 hdr_status; | |
821 | struct fcpio_tag tag; | |
822 | u32 id; | |
823 | u64 xfer_len = 0; | |
824 | struct fcpio_icmnd_cmpl *icmnd_cmpl; | |
825 | struct fnic_io_req *io_req; | |
826 | struct scsi_cmnd *sc; | |
67125b02 | 827 | struct fnic_stats *fnic_stats = &fnic->fnic_stats; |
5df6d737 AJ |
828 | unsigned long flags; |
829 | spinlock_t *io_lock; | |
4d7007b4 | 830 | u64 cmd_trace; |
14eb5d90 | 831 | unsigned long start_time; |
445d2960 | 832 | unsigned long io_duration_time; |
5df6d737 AJ |
833 | |
834 | /* Decode the cmpl description to get the io_req id */ | |
835 | fcpio_header_dec(&desc->hdr, &type, &hdr_status, &tag); | |
836 | fcpio_tag_id_dec(&tag, &id); | |
14eb5d90 | 837 | icmnd_cmpl = &desc->u.icmnd_cmpl; |
5df6d737 | 838 | |
fc85799e | 839 | if (id >= fnic->fnic_max_tag_id) { |
03298552 HP |
840 | shost_printk(KERN_ERR, fnic->lport->host, |
841 | "Tag out of range tag %x hdr status = %s\n", | |
842 | id, fnic_fcpio_status_to_str(hdr_status)); | |
5df6d737 | 843 | return; |
03298552 | 844 | } |
5df6d737 AJ |
845 | |
846 | sc = scsi_host_find_tag(fnic->lport->host, id); | |
847 | WARN_ON_ONCE(!sc); | |
14eb5d90 | 848 | if (!sc) { |
67125b02 | 849 | atomic64_inc(&fnic_stats->io_stats.sc_null); |
14eb5d90 HP |
850 | shost_printk(KERN_ERR, fnic->lport->host, |
851 | "icmnd_cmpl sc is null - " | |
852 | "hdr status = %s tag = 0x%x desc = 0x%p\n", | |
853 | fnic_fcpio_status_to_str(hdr_status), id, desc); | |
4d7007b4 HP |
854 | FNIC_TRACE(fnic_fcpio_icmnd_cmpl_handler, |
855 | fnic->lport->host->host_no, id, | |
856 | ((u64)icmnd_cmpl->_resvd0[1] << 16 | | |
857 | (u64)icmnd_cmpl->_resvd0[0]), | |
858 | ((u64)hdr_status << 16 | | |
859 | (u64)icmnd_cmpl->scsi_status << 8 | | |
860 | (u64)icmnd_cmpl->flags), desc, | |
861 | (u64)icmnd_cmpl->residual, 0); | |
5df6d737 | 862 | return; |
14eb5d90 | 863 | } |
5df6d737 AJ |
864 | |
865 | io_lock = fnic_io_lock_hash(fnic, sc); | |
866 | spin_lock_irqsave(io_lock, flags); | |
867 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
868 | WARN_ON_ONCE(!io_req); | |
869 | if (!io_req) { | |
67125b02 | 870 | atomic64_inc(&fnic_stats->io_stats.ioreq_null); |
14eb5d90 | 871 | CMD_FLAGS(sc) |= FNIC_IO_REQ_NULL; |
5df6d737 | 872 | spin_unlock_irqrestore(io_lock, flags); |
14eb5d90 HP |
873 | shost_printk(KERN_ERR, fnic->lport->host, |
874 | "icmnd_cmpl io_req is null - " | |
875 | "hdr status = %s tag = 0x%x sc 0x%p\n", | |
876 | fnic_fcpio_status_to_str(hdr_status), id, sc); | |
5df6d737 AJ |
877 | return; |
878 | } | |
14eb5d90 | 879 | start_time = io_req->start_time; |
5df6d737 AJ |
880 | |
881 | /* firmware completed the io */ | |
882 | io_req->io_completed = 1; | |
883 | ||
884 | /* | |
885 | * if SCSI-ML has already issued abort on this command, | |
b9202b4a | 886 | * set completion of the IO. The abts path will clean it up |
5df6d737 AJ |
887 | */ |
888 | if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) { | |
b9202b4a SK |
889 | |
890 | /* | |
891 | * set the FNIC_IO_DONE so that this doesn't get | |
892 | * flagged as 'out of order' if it was not aborted | |
893 | */ | |
894 | CMD_FLAGS(sc) |= FNIC_IO_DONE; | |
14eb5d90 | 895 | CMD_FLAGS(sc) |= FNIC_IO_ABTS_PENDING; |
b9202b4a SK |
896 | spin_unlock_irqrestore(io_lock, flags); |
897 | if(FCPIO_ABORTED == hdr_status) | |
14eb5d90 | 898 | CMD_FLAGS(sc) |= FNIC_IO_ABORTED; |
b9202b4a SK |
899 | |
900 | FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host, | |
901 | "icmnd_cmpl abts pending " | |
f280c77d | 902 | "hdr status = %s tag = 0x%x sc = 0x%p " |
b9202b4a SK |
903 | "scsi_status = %x residual = %d\n", |
904 | fnic_fcpio_status_to_str(hdr_status), | |
905 | id, sc, | |
906 | icmnd_cmpl->scsi_status, | |
907 | icmnd_cmpl->residual); | |
5df6d737 AJ |
908 | return; |
909 | } | |
910 | ||
911 | /* Mark the IO as complete */ | |
912 | CMD_STATE(sc) = FNIC_IOREQ_CMD_COMPLETE; | |
913 | ||
914 | icmnd_cmpl = &desc->u.icmnd_cmpl; | |
915 | ||
916 | switch (hdr_status) { | |
917 | case FCPIO_SUCCESS: | |
918 | sc->result = (DID_OK << 16) | icmnd_cmpl->scsi_status; | |
919 | xfer_len = scsi_bufflen(sc); | |
920 | scsi_set_resid(sc, icmnd_cmpl->residual); | |
921 | ||
922 | if (icmnd_cmpl->flags & FCPIO_ICMND_CMPL_RESID_UNDER) | |
923 | xfer_len -= icmnd_cmpl->residual; | |
924 | ||
39fcbbc0 SK |
925 | if (icmnd_cmpl->scsi_status == SAM_STAT_CHECK_CONDITION) |
926 | atomic64_inc(&fnic_stats->misc_stats.check_condition); | |
927 | ||
67125b02 HP |
928 | if (icmnd_cmpl->scsi_status == SAM_STAT_TASK_SET_FULL) |
929 | atomic64_inc(&fnic_stats->misc_stats.queue_fulls); | |
5df6d737 AJ |
930 | break; |
931 | ||
932 | case FCPIO_TIMEOUT: /* request was timed out */ | |
67125b02 | 933 | atomic64_inc(&fnic_stats->misc_stats.fcpio_timeout); |
5df6d737 AJ |
934 | sc->result = (DID_TIME_OUT << 16) | icmnd_cmpl->scsi_status; |
935 | break; | |
936 | ||
937 | case FCPIO_ABORTED: /* request was aborted */ | |
67125b02 | 938 | atomic64_inc(&fnic_stats->misc_stats.fcpio_aborted); |
5df6d737 AJ |
939 | sc->result = (DID_ERROR << 16) | icmnd_cmpl->scsi_status; |
940 | break; | |
941 | ||
942 | case FCPIO_DATA_CNT_MISMATCH: /* recv/sent more/less data than exp. */ | |
67125b02 | 943 | atomic64_inc(&fnic_stats->misc_stats.data_count_mismatch); |
5df6d737 AJ |
944 | scsi_set_resid(sc, icmnd_cmpl->residual); |
945 | sc->result = (DID_ERROR << 16) | icmnd_cmpl->scsi_status; | |
946 | break; | |
947 | ||
948 | case FCPIO_OUT_OF_RESOURCE: /* out of resources to complete request */ | |
67125b02 | 949 | atomic64_inc(&fnic_stats->fw_stats.fw_out_of_resources); |
5df6d737 AJ |
950 | sc->result = (DID_REQUEUE << 16) | icmnd_cmpl->scsi_status; |
951 | break; | |
67125b02 | 952 | |
5df6d737 | 953 | case FCPIO_IO_NOT_FOUND: /* requested I/O was not found */ |
67125b02 HP |
954 | atomic64_inc(&fnic_stats->io_stats.io_not_found); |
955 | sc->result = (DID_ERROR << 16) | icmnd_cmpl->scsi_status; | |
956 | break; | |
957 | ||
5df6d737 | 958 | case FCPIO_SGL_INVALID: /* request was aborted due to sgl error */ |
67125b02 HP |
959 | atomic64_inc(&fnic_stats->misc_stats.sgl_invalid); |
960 | sc->result = (DID_ERROR << 16) | icmnd_cmpl->scsi_status; | |
961 | break; | |
962 | ||
5df6d737 | 963 | case FCPIO_FW_ERR: /* request was terminated due fw error */ |
67125b02 HP |
964 | atomic64_inc(&fnic_stats->fw_stats.io_fw_errs); |
965 | sc->result = (DID_ERROR << 16) | icmnd_cmpl->scsi_status; | |
966 | break; | |
967 | ||
968 | case FCPIO_MSS_INVALID: /* request was aborted due to mss error */ | |
969 | atomic64_inc(&fnic_stats->misc_stats.mss_invalid); | |
970 | sc->result = (DID_ERROR << 16) | icmnd_cmpl->scsi_status; | |
971 | break; | |
972 | ||
973 | case FCPIO_INVALID_HEADER: /* header contains invalid data */ | |
974 | case FCPIO_INVALID_PARAM: /* some parameter in request invalid */ | |
975 | case FCPIO_REQ_NOT_SUPPORTED:/* request type is not supported */ | |
5df6d737 | 976 | default: |
5df6d737 AJ |
977 | sc->result = (DID_ERROR << 16) | icmnd_cmpl->scsi_status; |
978 | break; | |
979 | } | |
980 | ||
981 | /* Break link with the SCSI command */ | |
982 | CMD_SP(sc) = NULL; | |
14eb5d90 | 983 | CMD_FLAGS(sc) |= FNIC_IO_DONE; |
5df6d737 AJ |
984 | |
985 | spin_unlock_irqrestore(io_lock, flags); | |
986 | ||
14cee5b4 ML |
987 | if (hdr_status != FCPIO_SUCCESS) { |
988 | atomic64_inc(&fnic_stats->io_stats.io_failures); | |
989 | shost_printk(KERN_ERR, fnic->lport->host, "hdr status = %s\n", | |
990 | fnic_fcpio_status_to_str(hdr_status)); | |
991 | } | |
992 | ||
5df6d737 AJ |
993 | fnic_release_ioreq_buf(fnic, io_req, sc); |
994 | ||
995 | mempool_free(io_req, fnic->io_req_pool); | |
996 | ||
4d7007b4 HP |
997 | cmd_trace = ((u64)hdr_status << 56) | |
998 | (u64)icmnd_cmpl->scsi_status << 48 | | |
999 | (u64)icmnd_cmpl->flags << 40 | (u64)sc->cmnd[0] << 32 | | |
1000 | (u64)sc->cmnd[2] << 24 | (u64)sc->cmnd[3] << 16 | | |
1001 | (u64)sc->cmnd[4] << 8 | sc->cmnd[5]; | |
1002 | ||
1003 | FNIC_TRACE(fnic_fcpio_icmnd_cmpl_handler, | |
1004 | sc->device->host->host_no, id, sc, | |
1005 | ((u64)icmnd_cmpl->_resvd0[1] << 56 | | |
1006 | (u64)icmnd_cmpl->_resvd0[0] << 48 | | |
1007 | jiffies_to_msecs(jiffies - start_time)), | |
1008 | desc, cmd_trace, | |
1009 | (((u64)CMD_FLAGS(sc) << 32) | CMD_STATE(sc))); | |
1010 | ||
5df6d737 AJ |
1011 | if (sc->sc_data_direction == DMA_FROM_DEVICE) { |
1012 | fnic->lport->host_stats.fcp_input_requests++; | |
1013 | fnic->fcp_input_bytes += xfer_len; | |
1014 | } else if (sc->sc_data_direction == DMA_TO_DEVICE) { | |
1015 | fnic->lport->host_stats.fcp_output_requests++; | |
1016 | fnic->fcp_output_bytes += xfer_len; | |
1017 | } else | |
1018 | fnic->lport->host_stats.fcp_control_requests++; | |
1019 | ||
67125b02 HP |
1020 | atomic64_dec(&fnic_stats->io_stats.active_ios); |
1021 | if (atomic64_read(&fnic->io_cmpl_skip)) | |
1022 | atomic64_dec(&fnic->io_cmpl_skip); | |
1023 | else | |
1024 | atomic64_inc(&fnic_stats->io_stats.io_completions); | |
1025 | ||
445d2960 SK |
1026 | |
1027 | io_duration_time = jiffies_to_msecs(jiffies) - jiffies_to_msecs(io_req->start_time); | |
1028 | ||
1029 | if(io_duration_time <= 10) | |
1030 | atomic64_inc(&fnic_stats->io_stats.io_btw_0_to_10_msec); | |
1031 | else if(io_duration_time <= 100) | |
1032 | atomic64_inc(&fnic_stats->io_stats.io_btw_10_to_100_msec); | |
1033 | else if(io_duration_time <= 500) | |
1034 | atomic64_inc(&fnic_stats->io_stats.io_btw_100_to_500_msec); | |
1035 | else if(io_duration_time <= 5000) | |
1036 | atomic64_inc(&fnic_stats->io_stats.io_btw_500_to_5000_msec); | |
1037 | else if(io_duration_time <= 10000) | |
1038 | atomic64_inc(&fnic_stats->io_stats.io_btw_5000_to_10000_msec); | |
1039 | else if(io_duration_time <= 30000) | |
1040 | atomic64_inc(&fnic_stats->io_stats.io_btw_10000_to_30000_msec); | |
1041 | else { | |
1042 | atomic64_inc(&fnic_stats->io_stats.io_greater_than_30000_msec); | |
1043 | ||
1044 | if(io_duration_time > atomic64_read(&fnic_stats->io_stats.current_max_io_time)) | |
1045 | atomic64_set(&fnic_stats->io_stats.current_max_io_time, io_duration_time); | |
1046 | } | |
1047 | ||
5df6d737 AJ |
1048 | /* Call SCSI completion function to complete the IO */ |
1049 | if (sc->scsi_done) | |
1050 | sc->scsi_done(sc); | |
5df6d737 AJ |
1051 | } |
1052 | ||
1053 | /* fnic_fcpio_itmf_cmpl_handler | |
1054 | * Routine to handle itmf completions | |
1055 | */ | |
1056 | static void fnic_fcpio_itmf_cmpl_handler(struct fnic *fnic, | |
1057 | struct fcpio_fw_req *desc) | |
1058 | { | |
1059 | u8 type; | |
1060 | u8 hdr_status; | |
1061 | struct fcpio_tag tag; | |
1062 | u32 id; | |
1063 | struct scsi_cmnd *sc; | |
1064 | struct fnic_io_req *io_req; | |
67125b02 HP |
1065 | struct fnic_stats *fnic_stats = &fnic->fnic_stats; |
1066 | struct abort_stats *abts_stats = &fnic->fnic_stats.abts_stats; | |
1067 | struct terminate_stats *term_stats = &fnic->fnic_stats.term_stats; | |
1068 | struct misc_stats *misc_stats = &fnic->fnic_stats.misc_stats; | |
5df6d737 AJ |
1069 | unsigned long flags; |
1070 | spinlock_t *io_lock; | |
14eb5d90 | 1071 | unsigned long start_time; |
5df6d737 AJ |
1072 | |
1073 | fcpio_header_dec(&desc->hdr, &type, &hdr_status, &tag); | |
1074 | fcpio_tag_id_dec(&tag, &id); | |
1075 | ||
fc85799e | 1076 | if ((id & FNIC_TAG_MASK) >= fnic->fnic_max_tag_id) { |
03298552 HP |
1077 | shost_printk(KERN_ERR, fnic->lport->host, |
1078 | "Tag out of range tag %x hdr status = %s\n", | |
1079 | id, fnic_fcpio_status_to_str(hdr_status)); | |
5df6d737 | 1080 | return; |
03298552 | 1081 | } |
5df6d737 AJ |
1082 | |
1083 | sc = scsi_host_find_tag(fnic->lport->host, id & FNIC_TAG_MASK); | |
1084 | WARN_ON_ONCE(!sc); | |
14eb5d90 | 1085 | if (!sc) { |
67125b02 | 1086 | atomic64_inc(&fnic_stats->io_stats.sc_null); |
14eb5d90 HP |
1087 | shost_printk(KERN_ERR, fnic->lport->host, |
1088 | "itmf_cmpl sc is null - hdr status = %s tag = 0x%x\n", | |
1089 | fnic_fcpio_status_to_str(hdr_status), id); | |
5df6d737 | 1090 | return; |
14eb5d90 | 1091 | } |
5df6d737 AJ |
1092 | io_lock = fnic_io_lock_hash(fnic, sc); |
1093 | spin_lock_irqsave(io_lock, flags); | |
1094 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
1095 | WARN_ON_ONCE(!io_req); | |
1096 | if (!io_req) { | |
67125b02 | 1097 | atomic64_inc(&fnic_stats->io_stats.ioreq_null); |
5df6d737 | 1098 | spin_unlock_irqrestore(io_lock, flags); |
14eb5d90 HP |
1099 | CMD_FLAGS(sc) |= FNIC_IO_ABT_TERM_REQ_NULL; |
1100 | shost_printk(KERN_ERR, fnic->lport->host, | |
1101 | "itmf_cmpl io_req is null - " | |
1102 | "hdr status = %s tag = 0x%x sc 0x%p\n", | |
1103 | fnic_fcpio_status_to_str(hdr_status), id, sc); | |
5df6d737 AJ |
1104 | return; |
1105 | } | |
14eb5d90 | 1106 | start_time = io_req->start_time; |
5df6d737 | 1107 | |
03298552 HP |
1108 | if ((id & FNIC_TAG_ABORT) && (id & FNIC_TAG_DEV_RST)) { |
1109 | /* Abort and terminate completion of device reset req */ | |
1110 | /* REVISIT : Add asserts about various flags */ | |
1111 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
1112 | "dev reset abts cmpl recd. id %x status %s\n", | |
1113 | id, fnic_fcpio_status_to_str(hdr_status)); | |
1114 | CMD_STATE(sc) = FNIC_IOREQ_ABTS_COMPLETE; | |
1115 | CMD_ABTS_STATUS(sc) = hdr_status; | |
1116 | CMD_FLAGS(sc) |= FNIC_DEV_RST_DONE; | |
1117 | if (io_req->abts_done) | |
1118 | complete(io_req->abts_done); | |
1119 | spin_unlock_irqrestore(io_lock, flags); | |
1120 | } else if (id & FNIC_TAG_ABORT) { | |
5df6d737 | 1121 | /* Completion of abort cmd */ |
67125b02 HP |
1122 | switch (hdr_status) { |
1123 | case FCPIO_SUCCESS: | |
1124 | break; | |
1125 | case FCPIO_TIMEOUT: | |
1126 | if (CMD_FLAGS(sc) & FNIC_IO_ABTS_ISSUED) | |
1127 | atomic64_inc(&abts_stats->abort_fw_timeouts); | |
1128 | else | |
1129 | atomic64_inc( | |
1130 | &term_stats->terminate_fw_timeouts); | |
1131 | break; | |
691a837c SK |
1132 | case FCPIO_ITMF_REJECTED: |
1133 | FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host, | |
1134 | "abort reject recd. id %d\n", | |
1135 | (int)(id & FNIC_TAG_MASK)); | |
1136 | break; | |
67125b02 HP |
1137 | case FCPIO_IO_NOT_FOUND: |
1138 | if (CMD_FLAGS(sc) & FNIC_IO_ABTS_ISSUED) | |
1139 | atomic64_inc(&abts_stats->abort_io_not_found); | |
1140 | else | |
1141 | atomic64_inc( | |
1142 | &term_stats->terminate_io_not_found); | |
1143 | break; | |
1144 | default: | |
1145 | if (CMD_FLAGS(sc) & FNIC_IO_ABTS_ISSUED) | |
1146 | atomic64_inc(&abts_stats->abort_failures); | |
1147 | else | |
1148 | atomic64_inc( | |
1149 | &term_stats->terminate_failures); | |
1150 | break; | |
1151 | } | |
5df6d737 AJ |
1152 | if (CMD_STATE(sc) != FNIC_IOREQ_ABTS_PENDING) { |
1153 | /* This is a late completion. Ignore it */ | |
1154 | spin_unlock_irqrestore(io_lock, flags); | |
1155 | return; | |
1156 | } | |
691a837c | 1157 | |
14eb5d90 | 1158 | CMD_FLAGS(sc) |= FNIC_IO_ABT_TERM_DONE; |
ccc6d704 | 1159 | CMD_ABTS_STATUS(sc) = hdr_status; |
67125b02 | 1160 | |
691a837c SK |
1161 | /* If the status is IO not found consider it as success */ |
1162 | if (hdr_status == FCPIO_IO_NOT_FOUND) | |
1163 | CMD_ABTS_STATUS(sc) = FCPIO_SUCCESS; | |
691a837c | 1164 | |
67125b02 HP |
1165 | if (!(CMD_FLAGS(sc) & (FNIC_IO_ABORTED | FNIC_IO_DONE))) |
1166 | atomic64_inc(&misc_stats->no_icmnd_itmf_cmpls); | |
1167 | ||
5df6d737 AJ |
1168 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
1169 | "abts cmpl recd. id %d status %s\n", | |
1170 | (int)(id & FNIC_TAG_MASK), | |
1171 | fnic_fcpio_status_to_str(hdr_status)); | |
1172 | ||
1173 | /* | |
1174 | * If scsi_eh thread is blocked waiting for abts to complete, | |
1175 | * signal completion to it. IO will be cleaned in the thread | |
1176 | * else clean it in this context | |
1177 | */ | |
1178 | if (io_req->abts_done) { | |
1179 | complete(io_req->abts_done); | |
1180 | spin_unlock_irqrestore(io_lock, flags); | |
1181 | } else { | |
1182 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
1183 | "abts cmpl, completing IO\n"); | |
1184 | CMD_SP(sc) = NULL; | |
1185 | sc->result = (DID_ERROR << 16); | |
1186 | ||
1187 | spin_unlock_irqrestore(io_lock, flags); | |
1188 | ||
1189 | fnic_release_ioreq_buf(fnic, io_req, sc); | |
1190 | mempool_free(io_req, fnic->io_req_pool); | |
4d7007b4 HP |
1191 | if (sc->scsi_done) { |
1192 | FNIC_TRACE(fnic_fcpio_itmf_cmpl_handler, | |
1193 | sc->device->host->host_no, id, | |
1194 | sc, | |
1195 | jiffies_to_msecs(jiffies - start_time), | |
1196 | desc, | |
1197 | (((u64)hdr_status << 40) | | |
1198 | (u64)sc->cmnd[0] << 32 | | |
1199 | (u64)sc->cmnd[2] << 24 | | |
1200 | (u64)sc->cmnd[3] << 16 | | |
1201 | (u64)sc->cmnd[4] << 8 | sc->cmnd[5]), | |
1202 | (((u64)CMD_FLAGS(sc) << 32) | | |
1203 | CMD_STATE(sc))); | |
5df6d737 | 1204 | sc->scsi_done(sc); |
7ef539c8 SK |
1205 | atomic64_dec(&fnic_stats->io_stats.active_ios); |
1206 | if (atomic64_read(&fnic->io_cmpl_skip)) | |
1207 | atomic64_dec(&fnic->io_cmpl_skip); | |
1208 | else | |
1209 | atomic64_inc(&fnic_stats->io_stats.io_completions); | |
4d7007b4 | 1210 | } |
5df6d737 AJ |
1211 | } |
1212 | ||
1213 | } else if (id & FNIC_TAG_DEV_RST) { | |
1214 | /* Completion of device reset */ | |
1215 | CMD_LR_STATUS(sc) = hdr_status; | |
03298552 HP |
1216 | if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) { |
1217 | spin_unlock_irqrestore(io_lock, flags); | |
14eb5d90 | 1218 | CMD_FLAGS(sc) |= FNIC_DEV_RST_ABTS_PENDING; |
4d7007b4 HP |
1219 | FNIC_TRACE(fnic_fcpio_itmf_cmpl_handler, |
1220 | sc->device->host->host_no, id, sc, | |
1221 | jiffies_to_msecs(jiffies - start_time), | |
1222 | desc, 0, | |
1223 | (((u64)CMD_FLAGS(sc) << 32) | CMD_STATE(sc))); | |
03298552 HP |
1224 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
1225 | "Terminate pending " | |
1226 | "dev reset cmpl recd. id %d status %s\n", | |
1227 | (int)(id & FNIC_TAG_MASK), | |
1228 | fnic_fcpio_status_to_str(hdr_status)); | |
1229 | return; | |
1230 | } | |
1231 | if (CMD_FLAGS(sc) & FNIC_DEV_RST_TIMED_OUT) { | |
1232 | /* Need to wait for terminate completion */ | |
1233 | spin_unlock_irqrestore(io_lock, flags); | |
4d7007b4 HP |
1234 | FNIC_TRACE(fnic_fcpio_itmf_cmpl_handler, |
1235 | sc->device->host->host_no, id, sc, | |
1236 | jiffies_to_msecs(jiffies - start_time), | |
1237 | desc, 0, | |
1238 | (((u64)CMD_FLAGS(sc) << 32) | CMD_STATE(sc))); | |
03298552 HP |
1239 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
1240 | "dev reset cmpl recd after time out. " | |
1241 | "id %d status %s\n", | |
1242 | (int)(id & FNIC_TAG_MASK), | |
1243 | fnic_fcpio_status_to_str(hdr_status)); | |
1244 | return; | |
1245 | } | |
5df6d737 | 1246 | CMD_STATE(sc) = FNIC_IOREQ_CMD_COMPLETE; |
03298552 | 1247 | CMD_FLAGS(sc) |= FNIC_DEV_RST_DONE; |
5df6d737 AJ |
1248 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
1249 | "dev reset cmpl recd. id %d status %s\n", | |
1250 | (int)(id & FNIC_TAG_MASK), | |
1251 | fnic_fcpio_status_to_str(hdr_status)); | |
1252 | if (io_req->dr_done) | |
1253 | complete(io_req->dr_done); | |
1254 | spin_unlock_irqrestore(io_lock, flags); | |
1255 | ||
1256 | } else { | |
1257 | shost_printk(KERN_ERR, fnic->lport->host, | |
1258 | "Unexpected itmf io state %s tag %x\n", | |
1259 | fnic_ioreq_state_to_str(CMD_STATE(sc)), id); | |
1260 | spin_unlock_irqrestore(io_lock, flags); | |
1261 | } | |
1262 | ||
1263 | } | |
1264 | ||
1265 | /* | |
1266 | * fnic_fcpio_cmpl_handler | |
1267 | * Routine to service the cq for wq_copy | |
1268 | */ | |
1269 | static int fnic_fcpio_cmpl_handler(struct vnic_dev *vdev, | |
1270 | unsigned int cq_index, | |
1271 | struct fcpio_fw_req *desc) | |
1272 | { | |
1273 | struct fnic *fnic = vnic_dev_priv(vdev); | |
5df6d737 | 1274 | |
67125b02 HP |
1275 | switch (desc->hdr.type) { |
1276 | case FCPIO_ICMND_CMPL: /* fw completed a command */ | |
1277 | case FCPIO_ITMF_CMPL: /* fw completed itmf (abort cmd, lun reset)*/ | |
1278 | case FCPIO_FLOGI_REG_CMPL: /* fw completed flogi_reg */ | |
1279 | case FCPIO_FLOGI_FIP_REG_CMPL: /* fw completed flogi_fip_reg */ | |
1280 | case FCPIO_RESET_CMPL: /* fw completed reset */ | |
1281 | atomic64_dec(&fnic->fnic_stats.fw_stats.active_fw_reqs); | |
1282 | break; | |
1283 | default: | |
1284 | break; | |
1285 | } | |
1286 | ||
5df6d737 AJ |
1287 | switch (desc->hdr.type) { |
1288 | case FCPIO_ACK: /* fw copied copy wq desc to its queue */ | |
1289 | fnic_fcpio_ack_handler(fnic, cq_index, desc); | |
1290 | break; | |
1291 | ||
1292 | case FCPIO_ICMND_CMPL: /* fw completed a command */ | |
1293 | fnic_fcpio_icmnd_cmpl_handler(fnic, desc); | |
1294 | break; | |
1295 | ||
1296 | case FCPIO_ITMF_CMPL: /* fw completed itmf (abort cmd, lun reset)*/ | |
1297 | fnic_fcpio_itmf_cmpl_handler(fnic, desc); | |
1298 | break; | |
1299 | ||
1300 | case FCPIO_FLOGI_REG_CMPL: /* fw completed flogi_reg */ | |
78112e55 | 1301 | case FCPIO_FLOGI_FIP_REG_CMPL: /* fw completed flogi_fip_reg */ |
03298552 | 1302 | fnic_fcpio_flogi_reg_cmpl_handler(fnic, desc); |
5df6d737 AJ |
1303 | break; |
1304 | ||
1305 | case FCPIO_RESET_CMPL: /* fw completed reset */ | |
03298552 | 1306 | fnic_fcpio_fw_reset_cmpl_handler(fnic, desc); |
5df6d737 AJ |
1307 | break; |
1308 | ||
1309 | default: | |
1310 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
1311 | "firmware completion type %d\n", | |
1312 | desc->hdr.type); | |
1313 | break; | |
1314 | } | |
1315 | ||
03298552 | 1316 | return 0; |
5df6d737 AJ |
1317 | } |
1318 | ||
1319 | /* | |
1320 | * fnic_wq_copy_cmpl_handler | |
1321 | * Routine to process wq copy | |
1322 | */ | |
1323 | int fnic_wq_copy_cmpl_handler(struct fnic *fnic, int copy_work_to_do) | |
1324 | { | |
1325 | unsigned int wq_work_done = 0; | |
1326 | unsigned int i, cq_index; | |
1327 | unsigned int cur_work_done; | |
3567dca1 SK |
1328 | struct misc_stats *misc_stats = &fnic->fnic_stats.misc_stats; |
1329 | u64 start_jiffies = 0; | |
1330 | u64 end_jiffies = 0; | |
1331 | u64 delta_jiffies = 0; | |
1332 | u64 delta_ms = 0; | |
5df6d737 AJ |
1333 | |
1334 | for (i = 0; i < fnic->wq_copy_count; i++) { | |
1335 | cq_index = i + fnic->raw_wq_count + fnic->rq_count; | |
3567dca1 SK |
1336 | |
1337 | start_jiffies = jiffies; | |
5df6d737 AJ |
1338 | cur_work_done = vnic_cq_copy_service(&fnic->cq[cq_index], |
1339 | fnic_fcpio_cmpl_handler, | |
1340 | copy_work_to_do); | |
3567dca1 SK |
1341 | end_jiffies = jiffies; |
1342 | ||
5df6d737 | 1343 | wq_work_done += cur_work_done; |
3567dca1 SK |
1344 | delta_jiffies = end_jiffies - start_jiffies; |
1345 | if (delta_jiffies > | |
1346 | (u64) atomic64_read(&misc_stats->max_isr_jiffies)) { | |
1347 | atomic64_set(&misc_stats->max_isr_jiffies, | |
1348 | delta_jiffies); | |
1349 | delta_ms = jiffies_to_msecs(delta_jiffies); | |
1350 | atomic64_set(&misc_stats->max_isr_time_ms, delta_ms); | |
1351 | atomic64_set(&misc_stats->corr_work_done, | |
1352 | cur_work_done); | |
1353 | } | |
5df6d737 AJ |
1354 | } |
1355 | return wq_work_done; | |
1356 | } | |
1357 | ||
1358 | static void fnic_cleanup_io(struct fnic *fnic, int exclude_id) | |
1359 | { | |
1259c5dc | 1360 | int i; |
5df6d737 AJ |
1361 | struct fnic_io_req *io_req; |
1362 | unsigned long flags = 0; | |
1363 | struct scsi_cmnd *sc; | |
1364 | spinlock_t *io_lock; | |
14eb5d90 | 1365 | unsigned long start_time = 0; |
67125b02 | 1366 | struct fnic_stats *fnic_stats = &fnic->fnic_stats; |
5df6d737 | 1367 | |
fc85799e | 1368 | for (i = 0; i < fnic->fnic_max_tag_id; i++) { |
5df6d737 AJ |
1369 | if (i == exclude_id) |
1370 | continue; | |
1371 | ||
1259c5dc SB |
1372 | io_lock = fnic_io_lock_tag(fnic, i); |
1373 | spin_lock_irqsave(io_lock, flags); | |
5df6d737 | 1374 | sc = scsi_host_find_tag(fnic->lport->host, i); |
1259c5dc SB |
1375 | if (!sc) { |
1376 | spin_unlock_irqrestore(io_lock, flags); | |
5df6d737 | 1377 | continue; |
1259c5dc | 1378 | } |
5df6d737 | 1379 | |
5df6d737 | 1380 | io_req = (struct fnic_io_req *)CMD_SP(sc); |
03298552 HP |
1381 | if ((CMD_FLAGS(sc) & FNIC_DEVICE_RESET) && |
1382 | !(CMD_FLAGS(sc) & FNIC_DEV_RST_DONE)) { | |
1383 | /* | |
1384 | * We will be here only when FW completes reset | |
1385 | * without sending completions for outstanding ios. | |
1386 | */ | |
1387 | CMD_FLAGS(sc) |= FNIC_DEV_RST_DONE; | |
1388 | if (io_req && io_req->dr_done) | |
1389 | complete(io_req->dr_done); | |
1390 | else if (io_req && io_req->abts_done) | |
1391 | complete(io_req->abts_done); | |
1392 | spin_unlock_irqrestore(io_lock, flags); | |
1393 | continue; | |
1394 | } else if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) { | |
1395 | spin_unlock_irqrestore(io_lock, flags); | |
1396 | continue; | |
1397 | } | |
5df6d737 AJ |
1398 | if (!io_req) { |
1399 | spin_unlock_irqrestore(io_lock, flags); | |
1400 | goto cleanup_scsi_cmd; | |
1401 | } | |
1402 | ||
1403 | CMD_SP(sc) = NULL; | |
1404 | ||
1405 | spin_unlock_irqrestore(io_lock, flags); | |
1406 | ||
1407 | /* | |
1408 | * If there is a scsi_cmnd associated with this io_req, then | |
1409 | * free the corresponding state | |
1410 | */ | |
14eb5d90 | 1411 | start_time = io_req->start_time; |
5df6d737 AJ |
1412 | fnic_release_ioreq_buf(fnic, io_req, sc); |
1413 | mempool_free(io_req, fnic->io_req_pool); | |
1414 | ||
1415 | cleanup_scsi_cmd: | |
1416 | sc->result = DID_TRANSPORT_DISRUPTED << 16; | |
66818663 | 1417 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
e8bfe3e7 SK |
1418 | "%s: tag:0x%x : sc:0x%p duration = %lu DID_TRANSPORT_DISRUPTED\n", |
1419 | __func__, sc->request->tag, sc, | |
1420 | (jiffies - start_time)); | |
5df6d737 | 1421 | |
67125b02 HP |
1422 | if (atomic64_read(&fnic->io_cmpl_skip)) |
1423 | atomic64_dec(&fnic->io_cmpl_skip); | |
1424 | else | |
1425 | atomic64_inc(&fnic_stats->io_stats.io_completions); | |
1426 | ||
5df6d737 | 1427 | /* Complete the command to SCSI */ |
4d7007b4 | 1428 | if (sc->scsi_done) { |
e8bfe3e7 SK |
1429 | if (!(CMD_FLAGS(sc) & FNIC_IO_ISSUED)) |
1430 | shost_printk(KERN_ERR, fnic->lport->host, | |
1431 | "Calling done for IO not issued to fw: tag:0x%x sc:0x%p\n", | |
1432 | sc->request->tag, sc); | |
1433 | ||
4d7007b4 HP |
1434 | FNIC_TRACE(fnic_cleanup_io, |
1435 | sc->device->host->host_no, i, sc, | |
1436 | jiffies_to_msecs(jiffies - start_time), | |
1437 | 0, ((u64)sc->cmnd[0] << 32 | | |
1438 | (u64)sc->cmnd[2] << 24 | | |
1439 | (u64)sc->cmnd[3] << 16 | | |
1440 | (u64)sc->cmnd[4] << 8 | sc->cmnd[5]), | |
1441 | (((u64)CMD_FLAGS(sc) << 32) | CMD_STATE(sc))); | |
1442 | ||
5df6d737 | 1443 | sc->scsi_done(sc); |
4d7007b4 | 1444 | } |
5df6d737 AJ |
1445 | } |
1446 | } | |
1447 | ||
1448 | void fnic_wq_copy_cleanup_handler(struct vnic_wq_copy *wq, | |
1449 | struct fcpio_host_req *desc) | |
1450 | { | |
1451 | u32 id; | |
1452 | struct fnic *fnic = vnic_dev_priv(wq->vdev); | |
1453 | struct fnic_io_req *io_req; | |
1454 | struct scsi_cmnd *sc; | |
1455 | unsigned long flags; | |
1456 | spinlock_t *io_lock; | |
14eb5d90 | 1457 | unsigned long start_time = 0; |
5df6d737 AJ |
1458 | |
1459 | /* get the tag reference */ | |
1460 | fcpio_tag_id_dec(&desc->hdr.tag, &id); | |
1461 | id &= FNIC_TAG_MASK; | |
1462 | ||
fc85799e | 1463 | if (id >= fnic->fnic_max_tag_id) |
5df6d737 AJ |
1464 | return; |
1465 | ||
1466 | sc = scsi_host_find_tag(fnic->lport->host, id); | |
1467 | if (!sc) | |
1468 | return; | |
1469 | ||
1470 | io_lock = fnic_io_lock_hash(fnic, sc); | |
1471 | spin_lock_irqsave(io_lock, flags); | |
1472 | ||
1473 | /* Get the IO context which this desc refers to */ | |
1474 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
1475 | ||
1476 | /* fnic interrupts are turned off by now */ | |
1477 | ||
1478 | if (!io_req) { | |
1479 | spin_unlock_irqrestore(io_lock, flags); | |
1480 | goto wq_copy_cleanup_scsi_cmd; | |
1481 | } | |
1482 | ||
1483 | CMD_SP(sc) = NULL; | |
1484 | ||
1485 | spin_unlock_irqrestore(io_lock, flags); | |
1486 | ||
14eb5d90 | 1487 | start_time = io_req->start_time; |
5df6d737 AJ |
1488 | fnic_release_ioreq_buf(fnic, io_req, sc); |
1489 | mempool_free(io_req, fnic->io_req_pool); | |
1490 | ||
1491 | wq_copy_cleanup_scsi_cmd: | |
1492 | sc->result = DID_NO_CONNECT << 16; | |
1493 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, "wq_copy_cleanup_handler:" | |
1494 | " DID_NO_CONNECT\n"); | |
1495 | ||
4d7007b4 HP |
1496 | if (sc->scsi_done) { |
1497 | FNIC_TRACE(fnic_wq_copy_cleanup_handler, | |
1498 | sc->device->host->host_no, id, sc, | |
1499 | jiffies_to_msecs(jiffies - start_time), | |
1500 | 0, ((u64)sc->cmnd[0] << 32 | | |
1501 | (u64)sc->cmnd[2] << 24 | (u64)sc->cmnd[3] << 16 | | |
1502 | (u64)sc->cmnd[4] << 8 | sc->cmnd[5]), | |
1503 | (((u64)CMD_FLAGS(sc) << 32) | CMD_STATE(sc))); | |
1504 | ||
5df6d737 | 1505 | sc->scsi_done(sc); |
4d7007b4 | 1506 | } |
5df6d737 AJ |
1507 | } |
1508 | ||
1509 | static inline int fnic_queue_abort_io_req(struct fnic *fnic, int tag, | |
1510 | u32 task_req, u8 *fc_lun, | |
1511 | struct fnic_io_req *io_req) | |
1512 | { | |
1513 | struct vnic_wq_copy *wq = &fnic->wq_copy[0]; | |
03298552 | 1514 | struct Scsi_Host *host = fnic->lport->host; |
67125b02 | 1515 | struct misc_stats *misc_stats = &fnic->fnic_stats.misc_stats; |
5df6d737 AJ |
1516 | unsigned long flags; |
1517 | ||
03298552 HP |
1518 | spin_lock_irqsave(host->host_lock, flags); |
1519 | if (unlikely(fnic_chk_state_flags_locked(fnic, | |
1520 | FNIC_FLAGS_IO_BLOCKED))) { | |
1521 | spin_unlock_irqrestore(host->host_lock, flags); | |
1522 | return 1; | |
1523 | } else | |
1524 | atomic_inc(&fnic->in_flight); | |
1525 | spin_unlock_irqrestore(host->host_lock, flags); | |
1526 | ||
5df6d737 AJ |
1527 | spin_lock_irqsave(&fnic->wq_copy_lock[0], flags); |
1528 | ||
1529 | if (vnic_wq_copy_desc_avail(wq) <= fnic->wq_copy_desc_low[0]) | |
1530 | free_wq_copy_descs(fnic, wq); | |
1531 | ||
1532 | if (!vnic_wq_copy_desc_avail(wq)) { | |
1533 | spin_unlock_irqrestore(&fnic->wq_copy_lock[0], flags); | |
03298552 | 1534 | atomic_dec(&fnic->in_flight); |
14eb5d90 | 1535 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
03298552 | 1536 | "fnic_queue_abort_io_req: failure: no descriptors\n"); |
67125b02 | 1537 | atomic64_inc(&misc_stats->abts_cpwq_alloc_failures); |
5df6d737 AJ |
1538 | return 1; |
1539 | } | |
1540 | fnic_queue_wq_copy_desc_itmf(wq, tag | FNIC_TAG_ABORT, | |
1541 | 0, task_req, tag, fc_lun, io_req->port_id, | |
1542 | fnic->config.ra_tov, fnic->config.ed_tov); | |
1543 | ||
67125b02 HP |
1544 | atomic64_inc(&fnic->fnic_stats.fw_stats.active_fw_reqs); |
1545 | if (atomic64_read(&fnic->fnic_stats.fw_stats.active_fw_reqs) > | |
1546 | atomic64_read(&fnic->fnic_stats.fw_stats.max_fw_reqs)) | |
1547 | atomic64_set(&fnic->fnic_stats.fw_stats.max_fw_reqs, | |
1548 | atomic64_read(&fnic->fnic_stats.fw_stats.active_fw_reqs)); | |
1549 | ||
5df6d737 | 1550 | spin_unlock_irqrestore(&fnic->wq_copy_lock[0], flags); |
03298552 HP |
1551 | atomic_dec(&fnic->in_flight); |
1552 | ||
5df6d737 AJ |
1553 | return 0; |
1554 | } | |
1555 | ||
03298552 | 1556 | static void fnic_rport_exch_reset(struct fnic *fnic, u32 port_id) |
5df6d737 AJ |
1557 | { |
1558 | int tag; | |
03298552 | 1559 | int abt_tag; |
67125b02 | 1560 | int term_cnt = 0; |
5df6d737 AJ |
1561 | struct fnic_io_req *io_req; |
1562 | spinlock_t *io_lock; | |
1563 | unsigned long flags; | |
1564 | struct scsi_cmnd *sc; | |
67125b02 HP |
1565 | struct reset_stats *reset_stats = &fnic->fnic_stats.reset_stats; |
1566 | struct terminate_stats *term_stats = &fnic->fnic_stats.term_stats; | |
5df6d737 AJ |
1567 | struct scsi_lun fc_lun; |
1568 | enum fnic_ioreq_state old_ioreq_state; | |
1569 | ||
1570 | FNIC_SCSI_DBG(KERN_DEBUG, | |
1571 | fnic->lport->host, | |
03298552 | 1572 | "fnic_rport_exch_reset called portid 0x%06x\n", |
5df6d737 AJ |
1573 | port_id); |
1574 | ||
1575 | if (fnic->in_remove) | |
1576 | return; | |
1577 | ||
fc85799e | 1578 | for (tag = 0; tag < fnic->fnic_max_tag_id; tag++) { |
03298552 | 1579 | abt_tag = tag; |
1259c5dc SB |
1580 | io_lock = fnic_io_lock_tag(fnic, tag); |
1581 | spin_lock_irqsave(io_lock, flags); | |
5df6d737 | 1582 | sc = scsi_host_find_tag(fnic->lport->host, tag); |
1259c5dc SB |
1583 | if (!sc) { |
1584 | spin_unlock_irqrestore(io_lock, flags); | |
5df6d737 | 1585 | continue; |
1259c5dc | 1586 | } |
5df6d737 AJ |
1587 | |
1588 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
1589 | ||
1590 | if (!io_req || io_req->port_id != port_id) { | |
1591 | spin_unlock_irqrestore(io_lock, flags); | |
1592 | continue; | |
1593 | } | |
1594 | ||
03298552 | 1595 | if ((CMD_FLAGS(sc) & FNIC_DEVICE_RESET) && |
14eb5d90 | 1596 | (!(CMD_FLAGS(sc) & FNIC_DEV_RST_ISSUED))) { |
03298552 HP |
1597 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
1598 | "fnic_rport_exch_reset dev rst not pending sc 0x%p\n", | |
1599 | sc); | |
1600 | spin_unlock_irqrestore(io_lock, flags); | |
1601 | continue; | |
1602 | } | |
1603 | ||
5df6d737 AJ |
1604 | /* |
1605 | * Found IO that is still pending with firmware and | |
1606 | * belongs to rport that went away | |
1607 | */ | |
1608 | if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) { | |
1609 | spin_unlock_irqrestore(io_lock, flags); | |
1610 | continue; | |
1611 | } | |
03298552 HP |
1612 | if (io_req->abts_done) { |
1613 | shost_printk(KERN_ERR, fnic->lport->host, | |
1614 | "fnic_rport_exch_reset: io_req->abts_done is set " | |
1615 | "state is %s\n", | |
1616 | fnic_ioreq_state_to_str(CMD_STATE(sc))); | |
1617 | } | |
1618 | ||
14eb5d90 HP |
1619 | if (!(CMD_FLAGS(sc) & FNIC_IO_ISSUED)) { |
1620 | shost_printk(KERN_ERR, fnic->lport->host, | |
1621 | "rport_exch_reset " | |
1622 | "IO not yet issued %p tag 0x%x flags " | |
1623 | "%x state %d\n", | |
1624 | sc, tag, CMD_FLAGS(sc), CMD_STATE(sc)); | |
1625 | } | |
5df6d737 AJ |
1626 | old_ioreq_state = CMD_STATE(sc); |
1627 | CMD_STATE(sc) = FNIC_IOREQ_ABTS_PENDING; | |
1628 | CMD_ABTS_STATUS(sc) = FCPIO_INVALID_CODE; | |
03298552 | 1629 | if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) { |
67125b02 | 1630 | atomic64_inc(&reset_stats->device_reset_terminates); |
03298552 HP |
1631 | abt_tag = (tag | FNIC_TAG_DEV_RST); |
1632 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
1633 | "fnic_rport_exch_reset dev rst sc 0x%p\n", | |
1634 | sc); | |
1635 | } | |
5df6d737 AJ |
1636 | |
1637 | BUG_ON(io_req->abts_done); | |
1638 | ||
1639 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
1640 | "fnic_rport_reset_exch: Issuing abts\n"); | |
1641 | ||
1642 | spin_unlock_irqrestore(io_lock, flags); | |
1643 | ||
1644 | /* Now queue the abort command to firmware */ | |
1645 | int_to_scsilun(sc->device->lun, &fc_lun); | |
1646 | ||
03298552 | 1647 | if (fnic_queue_abort_io_req(fnic, abt_tag, |
5df6d737 AJ |
1648 | FCPIO_ITMF_ABT_TASK_TERM, |
1649 | fc_lun.scsi_lun, io_req)) { | |
1650 | /* | |
1651 | * Revert the cmd state back to old state, if | |
25985edc | 1652 | * it hasn't changed in between. This cmd will get |
5df6d737 AJ |
1653 | * aborted later by scsi_eh, or cleaned up during |
1654 | * lun reset | |
1655 | */ | |
5df6d737 AJ |
1656 | spin_lock_irqsave(io_lock, flags); |
1657 | if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) | |
1658 | CMD_STATE(sc) = old_ioreq_state; | |
1659 | spin_unlock_irqrestore(io_lock, flags); | |
03298552 HP |
1660 | } else { |
1661 | spin_lock_irqsave(io_lock, flags); | |
a0bf1ca2 HP |
1662 | if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) |
1663 | CMD_FLAGS(sc) |= FNIC_DEV_RST_TERM_ISSUED; | |
14eb5d90 HP |
1664 | else |
1665 | CMD_FLAGS(sc) |= FNIC_IO_INTERNAL_TERM_ISSUED; | |
03298552 | 1666 | spin_unlock_irqrestore(io_lock, flags); |
67125b02 HP |
1667 | atomic64_inc(&term_stats->terminates); |
1668 | term_cnt++; | |
5df6d737 AJ |
1669 | } |
1670 | } | |
67125b02 HP |
1671 | if (term_cnt > atomic64_read(&term_stats->max_terminates)) |
1672 | atomic64_set(&term_stats->max_terminates, term_cnt); | |
5df6d737 AJ |
1673 | |
1674 | } | |
1675 | ||
1676 | void fnic_terminate_rport_io(struct fc_rport *rport) | |
1677 | { | |
1678 | int tag; | |
03298552 | 1679 | int abt_tag; |
67125b02 | 1680 | int term_cnt = 0; |
5df6d737 AJ |
1681 | struct fnic_io_req *io_req; |
1682 | spinlock_t *io_lock; | |
1683 | unsigned long flags; | |
1684 | struct scsi_cmnd *sc; | |
1685 | struct scsi_lun fc_lun; | |
d0385d92 SB |
1686 | struct fc_rport_libfc_priv *rdata; |
1687 | struct fc_lport *lport; | |
1688 | struct fnic *fnic; | |
5df6d737 | 1689 | struct fc_rport *cmd_rport; |
67125b02 HP |
1690 | struct reset_stats *reset_stats; |
1691 | struct terminate_stats *term_stats; | |
5df6d737 AJ |
1692 | enum fnic_ioreq_state old_ioreq_state; |
1693 | ||
d0385d92 SB |
1694 | if (!rport) { |
1695 | printk(KERN_ERR "fnic_terminate_rport_io: rport is NULL\n"); | |
1696 | return; | |
1697 | } | |
1698 | rdata = rport->dd_data; | |
1699 | ||
1700 | if (!rdata) { | |
1701 | printk(KERN_ERR "fnic_terminate_rport_io: rdata is NULL\n"); | |
1702 | return; | |
1703 | } | |
1704 | lport = rdata->local_port; | |
1705 | ||
1706 | if (!lport) { | |
1707 | printk(KERN_ERR "fnic_terminate_rport_io: lport is NULL\n"); | |
1708 | return; | |
1709 | } | |
1710 | fnic = lport_priv(lport); | |
5df6d737 AJ |
1711 | FNIC_SCSI_DBG(KERN_DEBUG, |
1712 | fnic->lport->host, "fnic_terminate_rport_io called" | |
03298552 HP |
1713 | " wwpn 0x%llx, wwnn0x%llx, rport 0x%p, portid 0x%06x\n", |
1714 | rport->port_name, rport->node_name, rport, | |
5df6d737 AJ |
1715 | rport->port_id); |
1716 | ||
1717 | if (fnic->in_remove) | |
1718 | return; | |
1719 | ||
67125b02 HP |
1720 | reset_stats = &fnic->fnic_stats.reset_stats; |
1721 | term_stats = &fnic->fnic_stats.term_stats; | |
1722 | ||
fc85799e | 1723 | for (tag = 0; tag < fnic->fnic_max_tag_id; tag++) { |
03298552 | 1724 | abt_tag = tag; |
1259c5dc SB |
1725 | io_lock = fnic_io_lock_tag(fnic, tag); |
1726 | spin_lock_irqsave(io_lock, flags); | |
5df6d737 | 1727 | sc = scsi_host_find_tag(fnic->lport->host, tag); |
1259c5dc SB |
1728 | if (!sc) { |
1729 | spin_unlock_irqrestore(io_lock, flags); | |
5df6d737 | 1730 | continue; |
1259c5dc | 1731 | } |
5df6d737 AJ |
1732 | |
1733 | cmd_rport = starget_to_rport(scsi_target(sc->device)); | |
1259c5dc SB |
1734 | if (rport != cmd_rport) { |
1735 | spin_unlock_irqrestore(io_lock, flags); | |
5df6d737 | 1736 | continue; |
1259c5dc | 1737 | } |
5df6d737 AJ |
1738 | |
1739 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
1740 | ||
1741 | if (!io_req || rport != cmd_rport) { | |
1742 | spin_unlock_irqrestore(io_lock, flags); | |
1743 | continue; | |
1744 | } | |
1745 | ||
03298552 | 1746 | if ((CMD_FLAGS(sc) & FNIC_DEVICE_RESET) && |
14eb5d90 | 1747 | (!(CMD_FLAGS(sc) & FNIC_DEV_RST_ISSUED))) { |
03298552 HP |
1748 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
1749 | "fnic_terminate_rport_io dev rst not pending sc 0x%p\n", | |
1750 | sc); | |
1751 | spin_unlock_irqrestore(io_lock, flags); | |
1752 | continue; | |
1753 | } | |
5df6d737 AJ |
1754 | /* |
1755 | * Found IO that is still pending with firmware and | |
1756 | * belongs to rport that went away | |
1757 | */ | |
1758 | if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) { | |
1759 | spin_unlock_irqrestore(io_lock, flags); | |
1760 | continue; | |
1761 | } | |
03298552 HP |
1762 | if (io_req->abts_done) { |
1763 | shost_printk(KERN_ERR, fnic->lport->host, | |
1764 | "fnic_terminate_rport_io: io_req->abts_done is set " | |
1765 | "state is %s\n", | |
1766 | fnic_ioreq_state_to_str(CMD_STATE(sc))); | |
1767 | } | |
14eb5d90 HP |
1768 | if (!(CMD_FLAGS(sc) & FNIC_IO_ISSUED)) { |
1769 | FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host, | |
1770 | "fnic_terminate_rport_io " | |
1771 | "IO not yet issued %p tag 0x%x flags " | |
1772 | "%x state %d\n", | |
1773 | sc, tag, CMD_FLAGS(sc), CMD_STATE(sc)); | |
1774 | } | |
5df6d737 AJ |
1775 | old_ioreq_state = CMD_STATE(sc); |
1776 | CMD_STATE(sc) = FNIC_IOREQ_ABTS_PENDING; | |
1777 | CMD_ABTS_STATUS(sc) = FCPIO_INVALID_CODE; | |
03298552 | 1778 | if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) { |
67125b02 | 1779 | atomic64_inc(&reset_stats->device_reset_terminates); |
03298552 HP |
1780 | abt_tag = (tag | FNIC_TAG_DEV_RST); |
1781 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
1782 | "fnic_terminate_rport_io dev rst sc 0x%p\n", sc); | |
1783 | } | |
5df6d737 AJ |
1784 | |
1785 | BUG_ON(io_req->abts_done); | |
1786 | ||
1787 | FNIC_SCSI_DBG(KERN_DEBUG, | |
1788 | fnic->lport->host, | |
1789 | "fnic_terminate_rport_io: Issuing abts\n"); | |
1790 | ||
1791 | spin_unlock_irqrestore(io_lock, flags); | |
1792 | ||
1793 | /* Now queue the abort command to firmware */ | |
1794 | int_to_scsilun(sc->device->lun, &fc_lun); | |
1795 | ||
03298552 | 1796 | if (fnic_queue_abort_io_req(fnic, abt_tag, |
5df6d737 AJ |
1797 | FCPIO_ITMF_ABT_TASK_TERM, |
1798 | fc_lun.scsi_lun, io_req)) { | |
1799 | /* | |
1800 | * Revert the cmd state back to old state, if | |
25985edc | 1801 | * it hasn't changed in between. This cmd will get |
5df6d737 AJ |
1802 | * aborted later by scsi_eh, or cleaned up during |
1803 | * lun reset | |
1804 | */ | |
5df6d737 AJ |
1805 | spin_lock_irqsave(io_lock, flags); |
1806 | if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) | |
1807 | CMD_STATE(sc) = old_ioreq_state; | |
1808 | spin_unlock_irqrestore(io_lock, flags); | |
03298552 HP |
1809 | } else { |
1810 | spin_lock_irqsave(io_lock, flags); | |
a0bf1ca2 HP |
1811 | if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) |
1812 | CMD_FLAGS(sc) |= FNIC_DEV_RST_TERM_ISSUED; | |
14eb5d90 HP |
1813 | else |
1814 | CMD_FLAGS(sc) |= FNIC_IO_INTERNAL_TERM_ISSUED; | |
03298552 | 1815 | spin_unlock_irqrestore(io_lock, flags); |
67125b02 HP |
1816 | atomic64_inc(&term_stats->terminates); |
1817 | term_cnt++; | |
5df6d737 AJ |
1818 | } |
1819 | } | |
67125b02 HP |
1820 | if (term_cnt > atomic64_read(&term_stats->max_terminates)) |
1821 | atomic64_set(&term_stats->max_terminates, term_cnt); | |
5df6d737 AJ |
1822 | |
1823 | } | |
1824 | ||
5df6d737 AJ |
1825 | /* |
1826 | * This function is exported to SCSI for sending abort cmnds. | |
1827 | * A SCSI IO is represented by a io_req in the driver. | |
1828 | * The ioreq is linked to the SCSI Cmd, thus a link with the ULP's IO. | |
1829 | */ | |
1830 | int fnic_abort_cmd(struct scsi_cmnd *sc) | |
1831 | { | |
1832 | struct fc_lport *lp; | |
1833 | struct fnic *fnic; | |
4d7007b4 | 1834 | struct fnic_io_req *io_req = NULL; |
5df6d737 AJ |
1835 | struct fc_rport *rport; |
1836 | spinlock_t *io_lock; | |
1837 | unsigned long flags; | |
14eb5d90 | 1838 | unsigned long start_time = 0; |
5df6d737 | 1839 | int ret = SUCCESS; |
14eb5d90 | 1840 | u32 task_req = 0; |
5df6d737 | 1841 | struct scsi_lun fc_lun; |
67125b02 HP |
1842 | struct fnic_stats *fnic_stats; |
1843 | struct abort_stats *abts_stats; | |
1844 | struct terminate_stats *term_stats; | |
66818663 | 1845 | enum fnic_ioreq_state old_ioreq_state; |
03298552 | 1846 | int tag; |
445d2960 | 1847 | unsigned long abt_issued_time; |
5df6d737 AJ |
1848 | DECLARE_COMPLETION_ONSTACK(tm_done); |
1849 | ||
1850 | /* Wait for rport to unblock */ | |
65d430fa | 1851 | fc_block_scsi_eh(sc); |
5df6d737 AJ |
1852 | |
1853 | /* Get local-port, check ready and link up */ | |
1854 | lp = shost_priv(sc->device->host); | |
1855 | ||
1856 | fnic = lport_priv(lp); | |
67125b02 HP |
1857 | fnic_stats = &fnic->fnic_stats; |
1858 | abts_stats = &fnic->fnic_stats.abts_stats; | |
1859 | term_stats = &fnic->fnic_stats.term_stats; | |
1860 | ||
0db6f435 | 1861 | rport = starget_to_rport(scsi_target(sc->device)); |
03298552 HP |
1862 | tag = sc->request->tag; |
1863 | FNIC_SCSI_DBG(KERN_DEBUG, | |
1864 | fnic->lport->host, | |
9cb78c16 | 1865 | "Abort Cmd called FCID 0x%x, LUN 0x%llx TAG %x flags %x\n", |
03298552 HP |
1866 | rport->port_id, sc->device->lun, tag, CMD_FLAGS(sc)); |
1867 | ||
1868 | CMD_FLAGS(sc) = FNIC_NO_FLAGS; | |
1869 | ||
5df6d737 AJ |
1870 | if (lp->state != LPORT_ST_READY || !(lp->link_up)) { |
1871 | ret = FAILED; | |
1872 | goto fnic_abort_cmd_end; | |
1873 | } | |
1874 | ||
1875 | /* | |
1876 | * Avoid a race between SCSI issuing the abort and the device | |
1877 | * completing the command. | |
1878 | * | |
1879 | * If the command is already completed by the fw cmpl code, | |
1880 | * we just return SUCCESS from here. This means that the abort | |
1881 | * succeeded. In the SCSI ML, since the timeout for command has | |
1882 | * happened, the completion wont actually complete the command | |
1883 | * and it will be considered as an aborted command | |
1884 | * | |
1885 | * The CMD_SP will not be cleared except while holding io_req_lock. | |
1886 | */ | |
1887 | io_lock = fnic_io_lock_hash(fnic, sc); | |
1888 | spin_lock_irqsave(io_lock, flags); | |
1889 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
1890 | if (!io_req) { | |
1891 | spin_unlock_irqrestore(io_lock, flags); | |
1892 | goto fnic_abort_cmd_end; | |
1893 | } | |
1894 | ||
1895 | io_req->abts_done = &tm_done; | |
1896 | ||
1897 | if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) { | |
1898 | spin_unlock_irqrestore(io_lock, flags); | |
1899 | goto wait_pending; | |
1900 | } | |
445d2960 SK |
1901 | |
1902 | abt_issued_time = jiffies_to_msecs(jiffies) - jiffies_to_msecs(io_req->start_time); | |
1903 | if (abt_issued_time <= 6000) | |
1904 | atomic64_inc(&abts_stats->abort_issued_btw_0_to_6_sec); | |
1905 | else if (abt_issued_time > 6000 && abt_issued_time <= 20000) | |
1906 | atomic64_inc(&abts_stats->abort_issued_btw_6_to_20_sec); | |
1907 | else if (abt_issued_time > 20000 && abt_issued_time <= 30000) | |
1908 | atomic64_inc(&abts_stats->abort_issued_btw_20_to_30_sec); | |
1909 | else if (abt_issued_time > 30000 && abt_issued_time <= 40000) | |
1910 | atomic64_inc(&abts_stats->abort_issued_btw_30_to_40_sec); | |
1911 | else if (abt_issued_time > 40000 && abt_issued_time <= 50000) | |
1912 | atomic64_inc(&abts_stats->abort_issued_btw_40_to_50_sec); | |
1913 | else if (abt_issued_time > 50000 && abt_issued_time <= 60000) | |
1914 | atomic64_inc(&abts_stats->abort_issued_btw_50_to_60_sec); | |
1915 | else | |
1916 | atomic64_inc(&abts_stats->abort_issued_greater_than_60_sec); | |
1917 | ||
1918 | FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host, | |
1919 | "CBD Opcode: %02x Abort issued time: %lu msec\n", sc->cmnd[0], abt_issued_time); | |
5df6d737 AJ |
1920 | /* |
1921 | * Command is still pending, need to abort it | |
1922 | * If the firmware completes the command after this point, | |
1923 | * the completion wont be done till mid-layer, since abort | |
1924 | * has already started. | |
1925 | */ | |
66818663 | 1926 | old_ioreq_state = CMD_STATE(sc); |
5df6d737 AJ |
1927 | CMD_STATE(sc) = FNIC_IOREQ_ABTS_PENDING; |
1928 | CMD_ABTS_STATUS(sc) = FCPIO_INVALID_CODE; | |
1929 | ||
1930 | spin_unlock_irqrestore(io_lock, flags); | |
1931 | ||
1932 | /* | |
1933 | * Check readiness of the remote port. If the path to remote | |
1934 | * port is up, then send abts to the remote port to terminate | |
1935 | * the IO. Else, just locally terminate the IO in the firmware | |
1936 | */ | |
5df6d737 AJ |
1937 | if (fc_remote_port_chkready(rport) == 0) |
1938 | task_req = FCPIO_ITMF_ABT_TASK; | |
67125b02 HP |
1939 | else { |
1940 | atomic64_inc(&fnic_stats->misc_stats.rport_not_ready); | |
5df6d737 | 1941 | task_req = FCPIO_ITMF_ABT_TASK_TERM; |
67125b02 | 1942 | } |
5df6d737 AJ |
1943 | |
1944 | /* Now queue the abort command to firmware */ | |
1945 | int_to_scsilun(sc->device->lun, &fc_lun); | |
1946 | ||
1947 | if (fnic_queue_abort_io_req(fnic, sc->request->tag, task_req, | |
1948 | fc_lun.scsi_lun, io_req)) { | |
1949 | spin_lock_irqsave(io_lock, flags); | |
66818663 HS |
1950 | if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) |
1951 | CMD_STATE(sc) = old_ioreq_state; | |
5df6d737 AJ |
1952 | io_req = (struct fnic_io_req *)CMD_SP(sc); |
1953 | if (io_req) | |
1954 | io_req->abts_done = NULL; | |
1955 | spin_unlock_irqrestore(io_lock, flags); | |
1956 | ret = FAILED; | |
1957 | goto fnic_abort_cmd_end; | |
1958 | } | |
67125b02 | 1959 | if (task_req == FCPIO_ITMF_ABT_TASK) { |
14eb5d90 | 1960 | CMD_FLAGS(sc) |= FNIC_IO_ABTS_ISSUED; |
67125b02 HP |
1961 | atomic64_inc(&fnic_stats->abts_stats.aborts); |
1962 | } else { | |
14eb5d90 | 1963 | CMD_FLAGS(sc) |= FNIC_IO_TERM_ISSUED; |
67125b02 HP |
1964 | atomic64_inc(&fnic_stats->term_stats.terminates); |
1965 | } | |
5df6d737 AJ |
1966 | |
1967 | /* | |
1968 | * We queued an abort IO, wait for its completion. | |
1969 | * Once the firmware completes the abort command, it will | |
1970 | * wake up this thread. | |
1971 | */ | |
1972 | wait_pending: | |
1973 | wait_for_completion_timeout(&tm_done, | |
1974 | msecs_to_jiffies | |
1975 | (2 * fnic->config.ra_tov + | |
1976 | fnic->config.ed_tov)); | |
1977 | ||
1978 | /* Check the abort status */ | |
1979 | spin_lock_irqsave(io_lock, flags); | |
1980 | ||
1981 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
1982 | if (!io_req) { | |
67125b02 | 1983 | atomic64_inc(&fnic_stats->io_stats.ioreq_null); |
5df6d737 | 1984 | spin_unlock_irqrestore(io_lock, flags); |
14eb5d90 | 1985 | CMD_FLAGS(sc) |= FNIC_IO_ABT_TERM_REQ_NULL; |
5df6d737 AJ |
1986 | ret = FAILED; |
1987 | goto fnic_abort_cmd_end; | |
1988 | } | |
1989 | io_req->abts_done = NULL; | |
1990 | ||
1991 | /* fw did not complete abort, timed out */ | |
1259c5dc | 1992 | if (CMD_ABTS_STATUS(sc) == FCPIO_INVALID_CODE) { |
5df6d737 | 1993 | spin_unlock_irqrestore(io_lock, flags); |
67125b02 | 1994 | if (task_req == FCPIO_ITMF_ABT_TASK) { |
67125b02 HP |
1995 | atomic64_inc(&abts_stats->abort_drv_timeouts); |
1996 | } else { | |
67125b02 HP |
1997 | atomic64_inc(&term_stats->terminate_drv_timeouts); |
1998 | } | |
14eb5d90 | 1999 | CMD_FLAGS(sc) |= FNIC_IO_ABT_TERM_TIMED_OUT; |
5df6d737 AJ |
2000 | ret = FAILED; |
2001 | goto fnic_abort_cmd_end; | |
2002 | } | |
2003 | ||
efc7a288 AC |
2004 | /* IO out of order */ |
2005 | ||
2006 | if (!(CMD_FLAGS(sc) & (FNIC_IO_ABORTED | FNIC_IO_DONE))) { | |
2007 | spin_unlock_irqrestore(io_lock, flags); | |
2008 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
2009 | "Issuing Host reset due to out of order IO\n"); | |
2010 | ||
efc7a288 AC |
2011 | ret = FAILED; |
2012 | goto fnic_abort_cmd_end; | |
2013 | } | |
2014 | ||
1259c5dc SB |
2015 | CMD_STATE(sc) = FNIC_IOREQ_ABTS_COMPLETE; |
2016 | ||
691a837c | 2017 | start_time = io_req->start_time; |
5df6d737 AJ |
2018 | /* |
2019 | * firmware completed the abort, check the status, | |
691a837c SK |
2020 | * free the io_req if successful. If abort fails, |
2021 | * Device reset will clean the I/O. | |
5df6d737 | 2022 | */ |
691a837c SK |
2023 | if (CMD_ABTS_STATUS(sc) == FCPIO_SUCCESS) |
2024 | CMD_SP(sc) = NULL; | |
2025 | else { | |
5df6d737 | 2026 | ret = FAILED; |
691a837c SK |
2027 | spin_unlock_irqrestore(io_lock, flags); |
2028 | goto fnic_abort_cmd_end; | |
2029 | } | |
5df6d737 AJ |
2030 | |
2031 | spin_unlock_irqrestore(io_lock, flags); | |
2032 | ||
2033 | fnic_release_ioreq_buf(fnic, io_req, sc); | |
2034 | mempool_free(io_req, fnic->io_req_pool); | |
2035 | ||
691a837c SK |
2036 | if (sc->scsi_done) { |
2037 | /* Call SCSI completion function to complete the IO */ | |
2038 | sc->result = (DID_ABORT << 16); | |
2039 | sc->scsi_done(sc); | |
7ef539c8 SK |
2040 | atomic64_dec(&fnic_stats->io_stats.active_ios); |
2041 | if (atomic64_read(&fnic->io_cmpl_skip)) | |
2042 | atomic64_dec(&fnic->io_cmpl_skip); | |
2043 | else | |
2044 | atomic64_inc(&fnic_stats->io_stats.io_completions); | |
691a837c SK |
2045 | } |
2046 | ||
5df6d737 | 2047 | fnic_abort_cmd_end: |
4d7007b4 HP |
2048 | FNIC_TRACE(fnic_abort_cmd, sc->device->host->host_no, |
2049 | sc->request->tag, sc, | |
2050 | jiffies_to_msecs(jiffies - start_time), | |
2051 | 0, ((u64)sc->cmnd[0] << 32 | | |
2052 | (u64)sc->cmnd[2] << 24 | (u64)sc->cmnd[3] << 16 | | |
2053 | (u64)sc->cmnd[4] << 8 | sc->cmnd[5]), | |
2054 | (((u64)CMD_FLAGS(sc) << 32) | CMD_STATE(sc))); | |
2055 | ||
5df6d737 | 2056 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
14eb5d90 | 2057 | "Returning from abort cmd type %x %s\n", task_req, |
5df6d737 AJ |
2058 | (ret == SUCCESS) ? |
2059 | "SUCCESS" : "FAILED"); | |
2060 | return ret; | |
2061 | } | |
2062 | ||
2063 | static inline int fnic_queue_dr_io_req(struct fnic *fnic, | |
2064 | struct scsi_cmnd *sc, | |
2065 | struct fnic_io_req *io_req) | |
2066 | { | |
2067 | struct vnic_wq_copy *wq = &fnic->wq_copy[0]; | |
03298552 | 2068 | struct Scsi_Host *host = fnic->lport->host; |
67125b02 | 2069 | struct misc_stats *misc_stats = &fnic->fnic_stats.misc_stats; |
5df6d737 AJ |
2070 | struct scsi_lun fc_lun; |
2071 | int ret = 0; | |
2072 | unsigned long intr_flags; | |
2073 | ||
03298552 HP |
2074 | spin_lock_irqsave(host->host_lock, intr_flags); |
2075 | if (unlikely(fnic_chk_state_flags_locked(fnic, | |
2076 | FNIC_FLAGS_IO_BLOCKED))) { | |
2077 | spin_unlock_irqrestore(host->host_lock, intr_flags); | |
2078 | return FAILED; | |
2079 | } else | |
2080 | atomic_inc(&fnic->in_flight); | |
2081 | spin_unlock_irqrestore(host->host_lock, intr_flags); | |
2082 | ||
5df6d737 AJ |
2083 | spin_lock_irqsave(&fnic->wq_copy_lock[0], intr_flags); |
2084 | ||
2085 | if (vnic_wq_copy_desc_avail(wq) <= fnic->wq_copy_desc_low[0]) | |
2086 | free_wq_copy_descs(fnic, wq); | |
2087 | ||
2088 | if (!vnic_wq_copy_desc_avail(wq)) { | |
14eb5d90 HP |
2089 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
2090 | "queue_dr_io_req failure - no descriptors\n"); | |
67125b02 | 2091 | atomic64_inc(&misc_stats->devrst_cpwq_alloc_failures); |
5df6d737 AJ |
2092 | ret = -EAGAIN; |
2093 | goto lr_io_req_end; | |
2094 | } | |
2095 | ||
2096 | /* fill in the lun info */ | |
2097 | int_to_scsilun(sc->device->lun, &fc_lun); | |
2098 | ||
2099 | fnic_queue_wq_copy_desc_itmf(wq, sc->request->tag | FNIC_TAG_DEV_RST, | |
2100 | 0, FCPIO_ITMF_LUN_RESET, SCSI_NO_TAG, | |
2101 | fc_lun.scsi_lun, io_req->port_id, | |
2102 | fnic->config.ra_tov, fnic->config.ed_tov); | |
2103 | ||
67125b02 HP |
2104 | atomic64_inc(&fnic->fnic_stats.fw_stats.active_fw_reqs); |
2105 | if (atomic64_read(&fnic->fnic_stats.fw_stats.active_fw_reqs) > | |
2106 | atomic64_read(&fnic->fnic_stats.fw_stats.max_fw_reqs)) | |
2107 | atomic64_set(&fnic->fnic_stats.fw_stats.max_fw_reqs, | |
2108 | atomic64_read(&fnic->fnic_stats.fw_stats.active_fw_reqs)); | |
2109 | ||
5df6d737 AJ |
2110 | lr_io_req_end: |
2111 | spin_unlock_irqrestore(&fnic->wq_copy_lock[0], intr_flags); | |
03298552 | 2112 | atomic_dec(&fnic->in_flight); |
5df6d737 AJ |
2113 | |
2114 | return ret; | |
2115 | } | |
2116 | ||
2117 | /* | |
2118 | * Clean up any pending aborts on the lun | |
2119 | * For each outstanding IO on this lun, whose abort is not completed by fw, | |
2120 | * issue a local abort. Wait for abort to complete. Return 0 if all commands | |
2121 | * successfully aborted, 1 otherwise | |
2122 | */ | |
2123 | static int fnic_clean_pending_aborts(struct fnic *fnic, | |
a36f5dd0 SK |
2124 | struct scsi_cmnd *lr_sc, |
2125 | bool new_sc) | |
2126 | ||
5df6d737 | 2127 | { |
a0bf1ca2 | 2128 | int tag, abt_tag; |
5df6d737 AJ |
2129 | struct fnic_io_req *io_req; |
2130 | spinlock_t *io_lock; | |
2131 | unsigned long flags; | |
2132 | int ret = 0; | |
2133 | struct scsi_cmnd *sc; | |
5df6d737 AJ |
2134 | struct scsi_lun fc_lun; |
2135 | struct scsi_device *lun_dev = lr_sc->device; | |
2136 | DECLARE_COMPLETION_ONSTACK(tm_done); | |
a0bf1ca2 | 2137 | enum fnic_ioreq_state old_ioreq_state; |
5df6d737 | 2138 | |
fc85799e | 2139 | for (tag = 0; tag < fnic->fnic_max_tag_id; tag++) { |
1259c5dc SB |
2140 | io_lock = fnic_io_lock_tag(fnic, tag); |
2141 | spin_lock_irqsave(io_lock, flags); | |
5df6d737 AJ |
2142 | sc = scsi_host_find_tag(fnic->lport->host, tag); |
2143 | /* | |
a36f5dd0 SK |
2144 | * ignore this lun reset cmd if issued using new SC |
2145 | * or cmds that do not belong to this lun | |
5df6d737 | 2146 | */ |
a36f5dd0 | 2147 | if (!sc || ((sc == lr_sc) && new_sc) || sc->device != lun_dev) { |
1259c5dc | 2148 | spin_unlock_irqrestore(io_lock, flags); |
5df6d737 | 2149 | continue; |
1259c5dc | 2150 | } |
5df6d737 AJ |
2151 | |
2152 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
2153 | ||
2154 | if (!io_req || sc->device != lun_dev) { | |
2155 | spin_unlock_irqrestore(io_lock, flags); | |
2156 | continue; | |
2157 | } | |
2158 | ||
2159 | /* | |
2160 | * Found IO that is still pending with firmware and | |
2161 | * belongs to the LUN that we are resetting | |
2162 | */ | |
2163 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
2164 | "Found IO in %s on lun\n", | |
2165 | fnic_ioreq_state_to_str(CMD_STATE(sc))); | |
2166 | ||
a0bf1ca2 HP |
2167 | if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) { |
2168 | spin_unlock_irqrestore(io_lock, flags); | |
2169 | continue; | |
2170 | } | |
2171 | if ((CMD_FLAGS(sc) & FNIC_DEVICE_RESET) && | |
14eb5d90 | 2172 | (!(CMD_FLAGS(sc) & FNIC_DEV_RST_ISSUED))) { |
a0bf1ca2 HP |
2173 | FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host, |
2174 | "%s dev rst not pending sc 0x%p\n", __func__, | |
2175 | sc); | |
2176 | spin_unlock_irqrestore(io_lock, flags); | |
2177 | continue; | |
2178 | } | |
1259c5dc SB |
2179 | |
2180 | if (io_req->abts_done) | |
2181 | shost_printk(KERN_ERR, fnic->lport->host, | |
2182 | "%s: io_req->abts_done is set state is %s\n", | |
2183 | __func__, fnic_ioreq_state_to_str(CMD_STATE(sc))); | |
a0bf1ca2 HP |
2184 | old_ioreq_state = CMD_STATE(sc); |
2185 | /* | |
2186 | * Any pending IO issued prior to reset is expected to be | |
2187 | * in abts pending state, if not we need to set | |
2188 | * FNIC_IOREQ_ABTS_PENDING to indicate the IO is abort pending. | |
2189 | * When IO is completed, the IO will be handed over and | |
2190 | * handled in this function. | |
2191 | */ | |
2192 | CMD_STATE(sc) = FNIC_IOREQ_ABTS_PENDING; | |
2193 | ||
a0bf1ca2 HP |
2194 | BUG_ON(io_req->abts_done); |
2195 | ||
2196 | abt_tag = tag; | |
2197 | if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) { | |
2198 | abt_tag |= FNIC_TAG_DEV_RST; | |
2199 | FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host, | |
2200 | "%s: dev rst sc 0x%p\n", __func__, sc); | |
2201 | } | |
5df6d737 AJ |
2202 | |
2203 | CMD_ABTS_STATUS(sc) = FCPIO_INVALID_CODE; | |
2204 | io_req->abts_done = &tm_done; | |
2205 | spin_unlock_irqrestore(io_lock, flags); | |
2206 | ||
2207 | /* Now queue the abort command to firmware */ | |
2208 | int_to_scsilun(sc->device->lun, &fc_lun); | |
5df6d737 | 2209 | |
a0bf1ca2 | 2210 | if (fnic_queue_abort_io_req(fnic, abt_tag, |
5df6d737 AJ |
2211 | FCPIO_ITMF_ABT_TASK_TERM, |
2212 | fc_lun.scsi_lun, io_req)) { | |
2213 | spin_lock_irqsave(io_lock, flags); | |
2214 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
2215 | if (io_req) | |
2216 | io_req->abts_done = NULL; | |
a0bf1ca2 HP |
2217 | if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) |
2218 | CMD_STATE(sc) = old_ioreq_state; | |
5df6d737 AJ |
2219 | spin_unlock_irqrestore(io_lock, flags); |
2220 | ret = 1; | |
2221 | goto clean_pending_aborts_end; | |
a0bf1ca2 HP |
2222 | } else { |
2223 | spin_lock_irqsave(io_lock, flags); | |
2224 | if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) | |
2225 | CMD_FLAGS(sc) |= FNIC_DEV_RST_TERM_ISSUED; | |
2226 | spin_unlock_irqrestore(io_lock, flags); | |
5df6d737 | 2227 | } |
14eb5d90 | 2228 | CMD_FLAGS(sc) |= FNIC_IO_INTERNAL_TERM_ISSUED; |
5df6d737 AJ |
2229 | |
2230 | wait_for_completion_timeout(&tm_done, | |
2231 | msecs_to_jiffies | |
2232 | (fnic->config.ed_tov)); | |
2233 | ||
2234 | /* Recheck cmd state to check if it is now aborted */ | |
2235 | spin_lock_irqsave(io_lock, flags); | |
2236 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
2237 | if (!io_req) { | |
2238 | spin_unlock_irqrestore(io_lock, flags); | |
14eb5d90 | 2239 | CMD_FLAGS(sc) |= FNIC_IO_ABT_TERM_REQ_NULL; |
a0bf1ca2 | 2240 | continue; |
5df6d737 AJ |
2241 | } |
2242 | ||
2243 | io_req->abts_done = NULL; | |
2244 | ||
2245 | /* if abort is still pending with fw, fail */ | |
1259c5dc | 2246 | if (CMD_ABTS_STATUS(sc) == FCPIO_INVALID_CODE) { |
5df6d737 | 2247 | spin_unlock_irqrestore(io_lock, flags); |
14eb5d90 | 2248 | CMD_FLAGS(sc) |= FNIC_IO_ABT_TERM_DONE; |
5df6d737 AJ |
2249 | ret = 1; |
2250 | goto clean_pending_aborts_end; | |
2251 | } | |
1259c5dc | 2252 | CMD_STATE(sc) = FNIC_IOREQ_ABTS_COMPLETE; |
a36f5dd0 SK |
2253 | |
2254 | /* original sc used for lr is handled by dev reset code */ | |
2255 | if (sc != lr_sc) | |
2256 | CMD_SP(sc) = NULL; | |
5df6d737 AJ |
2257 | spin_unlock_irqrestore(io_lock, flags); |
2258 | ||
a36f5dd0 SK |
2259 | /* original sc used for lr is handled by dev reset code */ |
2260 | if (sc != lr_sc) { | |
2261 | fnic_release_ioreq_buf(fnic, io_req, sc); | |
2262 | mempool_free(io_req, fnic->io_req_pool); | |
2263 | } | |
2264 | ||
2265 | /* | |
2266 | * Any IO is returned during reset, it needs to call scsi_done | |
2267 | * to return the scsi_cmnd to upper layer. | |
2268 | */ | |
2269 | if (sc->scsi_done) { | |
2270 | /* Set result to let upper SCSI layer retry */ | |
2271 | sc->result = DID_RESET << 16; | |
2272 | sc->scsi_done(sc); | |
2273 | } | |
5df6d737 AJ |
2274 | } |
2275 | ||
a0bf1ca2 HP |
2276 | schedule_timeout(msecs_to_jiffies(2 * fnic->config.ed_tov)); |
2277 | ||
2278 | /* walk again to check, if IOs are still pending in fw */ | |
2279 | if (fnic_is_abts_pending(fnic, lr_sc)) | |
2280 | ret = FAILED; | |
2281 | ||
5df6d737 AJ |
2282 | clean_pending_aborts_end: |
2283 | return ret; | |
2284 | } | |
2285 | ||
03298552 HP |
2286 | /** |
2287 | * fnic_scsi_host_start_tag | |
2288 | * Allocates tagid from host's tag list | |
2289 | **/ | |
2290 | static inline int | |
2291 | fnic_scsi_host_start_tag(struct fnic *fnic, struct scsi_cmnd *sc) | |
2292 | { | |
4d5b4ac1 JA |
2293 | struct request_queue *q = sc->request->q; |
2294 | struct request *dummy; | |
03298552 | 2295 | |
4d5b4ac1 JA |
2296 | dummy = blk_mq_alloc_request(q, REQ_OP_WRITE, BLK_MQ_REQ_NOWAIT); |
2297 | if (IS_ERR(dummy)) | |
2298 | return SCSI_NO_TAG; | |
03298552 | 2299 | |
4d5b4ac1 | 2300 | sc->tag = sc->request->tag = dummy->tag; |
511c49fe | 2301 | sc->host_scribble = (unsigned char *)dummy; |
03298552 | 2302 | |
4d5b4ac1 | 2303 | return dummy->tag; |
03298552 HP |
2304 | } |
2305 | ||
2306 | /** | |
2307 | * fnic_scsi_host_end_tag | |
2308 | * frees tag allocated by fnic_scsi_host_start_tag. | |
2309 | **/ | |
2310 | static inline void | |
2311 | fnic_scsi_host_end_tag(struct fnic *fnic, struct scsi_cmnd *sc) | |
2312 | { | |
511c49fe | 2313 | struct request *dummy = (struct request *)sc->host_scribble; |
03298552 | 2314 | |
4d5b4ac1 | 2315 | blk_mq_free_request(dummy); |
03298552 HP |
2316 | } |
2317 | ||
5df6d737 AJ |
2318 | /* |
2319 | * SCSI Eh thread issues a Lun Reset when one or more commands on a LUN | |
2320 | * fail to get aborted. It calls driver's eh_device_reset with a SCSI command | |
2321 | * on the LUN. | |
2322 | */ | |
2323 | int fnic_device_reset(struct scsi_cmnd *sc) | |
2324 | { | |
2325 | struct fc_lport *lp; | |
2326 | struct fnic *fnic; | |
4d7007b4 | 2327 | struct fnic_io_req *io_req = NULL; |
5df6d737 AJ |
2328 | struct fc_rport *rport; |
2329 | int status; | |
2330 | int ret = FAILED; | |
2331 | spinlock_t *io_lock; | |
2332 | unsigned long flags; | |
14eb5d90 | 2333 | unsigned long start_time = 0; |
03298552 | 2334 | struct scsi_lun fc_lun; |
67125b02 HP |
2335 | struct fnic_stats *fnic_stats; |
2336 | struct reset_stats *reset_stats; | |
4d7007b4 | 2337 | int tag = 0; |
5df6d737 | 2338 | DECLARE_COMPLETION_ONSTACK(tm_done); |
03298552 | 2339 | int tag_gen_flag = 0; /*to track tags allocated by fnic driver*/ |
a36f5dd0 | 2340 | bool new_sc = 0; |
5df6d737 AJ |
2341 | |
2342 | /* Wait for rport to unblock */ | |
65d430fa | 2343 | fc_block_scsi_eh(sc); |
5df6d737 AJ |
2344 | |
2345 | /* Get local-port, check ready and link up */ | |
2346 | lp = shost_priv(sc->device->host); | |
2347 | ||
2348 | fnic = lport_priv(lp); | |
67125b02 HP |
2349 | fnic_stats = &fnic->fnic_stats; |
2350 | reset_stats = &fnic->fnic_stats.reset_stats; | |
2351 | ||
2352 | atomic64_inc(&reset_stats->device_resets); | |
5df6d737 | 2353 | |
0db6f435 RK |
2354 | rport = starget_to_rport(scsi_target(sc->device)); |
2355 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
9cb78c16 | 2356 | "Device reset called FCID 0x%x, LUN 0x%llx sc 0x%p\n", |
03298552 | 2357 | rport->port_id, sc->device->lun, sc); |
5df6d737 AJ |
2358 | |
2359 | if (lp->state != LPORT_ST_READY || !(lp->link_up)) | |
2360 | goto fnic_device_reset_end; | |
2361 | ||
2362 | /* Check if remote port up */ | |
67125b02 HP |
2363 | if (fc_remote_port_chkready(rport)) { |
2364 | atomic64_inc(&fnic_stats->misc_stats.rport_not_ready); | |
5df6d737 | 2365 | goto fnic_device_reset_end; |
67125b02 | 2366 | } |
5df6d737 | 2367 | |
14eb5d90 | 2368 | CMD_FLAGS(sc) = FNIC_DEVICE_RESET; |
03298552 HP |
2369 | /* Allocate tag if not present */ |
2370 | ||
2371 | tag = sc->request->tag; | |
2372 | if (unlikely(tag < 0)) { | |
4d637168 | 2373 | /* |
4d5b4ac1 JA |
2374 | * Really should fix the midlayer to pass in a proper |
2375 | * request for ioctls... | |
4d637168 | 2376 | */ |
03298552 HP |
2377 | tag = fnic_scsi_host_start_tag(fnic, sc); |
2378 | if (unlikely(tag == SCSI_NO_TAG)) | |
2379 | goto fnic_device_reset_end; | |
2380 | tag_gen_flag = 1; | |
a36f5dd0 | 2381 | new_sc = 1; |
03298552 | 2382 | } |
5df6d737 AJ |
2383 | io_lock = fnic_io_lock_hash(fnic, sc); |
2384 | spin_lock_irqsave(io_lock, flags); | |
2385 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
2386 | ||
2387 | /* | |
2388 | * If there is a io_req attached to this command, then use it, | |
2389 | * else allocate a new one. | |
2390 | */ | |
2391 | if (!io_req) { | |
2392 | io_req = mempool_alloc(fnic->io_req_pool, GFP_ATOMIC); | |
2393 | if (!io_req) { | |
2394 | spin_unlock_irqrestore(io_lock, flags); | |
2395 | goto fnic_device_reset_end; | |
2396 | } | |
2397 | memset(io_req, 0, sizeof(*io_req)); | |
2398 | io_req->port_id = rport->port_id; | |
2399 | CMD_SP(sc) = (char *)io_req; | |
2400 | } | |
2401 | io_req->dr_done = &tm_done; | |
2402 | CMD_STATE(sc) = FNIC_IOREQ_CMD_PENDING; | |
2403 | CMD_LR_STATUS(sc) = FCPIO_INVALID_CODE; | |
2404 | spin_unlock_irqrestore(io_lock, flags); | |
2405 | ||
03298552 | 2406 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, "TAG %x\n", tag); |
5df6d737 AJ |
2407 | |
2408 | /* | |
2409 | * issue the device reset, if enqueue failed, clean up the ioreq | |
2410 | * and break assoc with scsi cmd | |
2411 | */ | |
2412 | if (fnic_queue_dr_io_req(fnic, sc, io_req)) { | |
2413 | spin_lock_irqsave(io_lock, flags); | |
2414 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
2415 | if (io_req) | |
2416 | io_req->dr_done = NULL; | |
2417 | goto fnic_device_reset_clean; | |
2418 | } | |
03298552 | 2419 | spin_lock_irqsave(io_lock, flags); |
14eb5d90 | 2420 | CMD_FLAGS(sc) |= FNIC_DEV_RST_ISSUED; |
03298552 | 2421 | spin_unlock_irqrestore(io_lock, flags); |
5df6d737 AJ |
2422 | |
2423 | /* | |
2424 | * Wait on the local completion for LUN reset. The io_req may be | |
2425 | * freed while we wait since we hold no lock. | |
2426 | */ | |
2427 | wait_for_completion_timeout(&tm_done, | |
2428 | msecs_to_jiffies(FNIC_LUN_RESET_TIMEOUT)); | |
2429 | ||
2430 | spin_lock_irqsave(io_lock, flags); | |
2431 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
2432 | if (!io_req) { | |
2433 | spin_unlock_irqrestore(io_lock, flags); | |
03298552 HP |
2434 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
2435 | "io_req is null tag 0x%x sc 0x%p\n", tag, sc); | |
5df6d737 AJ |
2436 | goto fnic_device_reset_end; |
2437 | } | |
2438 | io_req->dr_done = NULL; | |
2439 | ||
2440 | status = CMD_LR_STATUS(sc); | |
5df6d737 AJ |
2441 | |
2442 | /* | |
2443 | * If lun reset not completed, bail out with failed. io_req | |
2444 | * gets cleaned up during higher levels of EH | |
2445 | */ | |
2446 | if (status == FCPIO_INVALID_CODE) { | |
67125b02 | 2447 | atomic64_inc(&reset_stats->device_reset_timeouts); |
5df6d737 AJ |
2448 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
2449 | "Device reset timed out\n"); | |
03298552 HP |
2450 | CMD_FLAGS(sc) |= FNIC_DEV_RST_TIMED_OUT; |
2451 | spin_unlock_irqrestore(io_lock, flags); | |
2452 | int_to_scsilun(sc->device->lun, &fc_lun); | |
2453 | /* | |
1259c5dc SB |
2454 | * Issue abort and terminate on device reset request. |
2455 | * If q'ing of terminate fails, retry it after a delay. | |
03298552 HP |
2456 | */ |
2457 | while (1) { | |
2458 | spin_lock_irqsave(io_lock, flags); | |
2459 | if (CMD_FLAGS(sc) & FNIC_DEV_RST_TERM_ISSUED) { | |
2460 | spin_unlock_irqrestore(io_lock, flags); | |
2461 | break; | |
2462 | } | |
2463 | spin_unlock_irqrestore(io_lock, flags); | |
2464 | if (fnic_queue_abort_io_req(fnic, | |
2465 | tag | FNIC_TAG_DEV_RST, | |
2466 | FCPIO_ITMF_ABT_TASK_TERM, | |
2467 | fc_lun.scsi_lun, io_req)) { | |
2468 | wait_for_completion_timeout(&tm_done, | |
2469 | msecs_to_jiffies(FNIC_ABT_TERM_DELAY_TIMEOUT)); | |
2470 | } else { | |
2471 | spin_lock_irqsave(io_lock, flags); | |
2472 | CMD_FLAGS(sc) |= FNIC_DEV_RST_TERM_ISSUED; | |
2473 | CMD_STATE(sc) = FNIC_IOREQ_ABTS_PENDING; | |
2474 | io_req->abts_done = &tm_done; | |
2475 | spin_unlock_irqrestore(io_lock, flags); | |
2476 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
2477 | "Abort and terminate issued on Device reset " | |
2478 | "tag 0x%x sc 0x%p\n", tag, sc); | |
2479 | break; | |
2480 | } | |
2481 | } | |
2482 | while (1) { | |
2483 | spin_lock_irqsave(io_lock, flags); | |
2484 | if (!(CMD_FLAGS(sc) & FNIC_DEV_RST_DONE)) { | |
2485 | spin_unlock_irqrestore(io_lock, flags); | |
2486 | wait_for_completion_timeout(&tm_done, | |
2487 | msecs_to_jiffies(FNIC_LUN_RESET_TIMEOUT)); | |
2488 | break; | |
2489 | } else { | |
2490 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
2491 | io_req->abts_done = NULL; | |
2492 | goto fnic_device_reset_clean; | |
2493 | } | |
2494 | } | |
2495 | } else { | |
2496 | spin_unlock_irqrestore(io_lock, flags); | |
5df6d737 AJ |
2497 | } |
2498 | ||
2499 | /* Completed, but not successful, clean up the io_req, return fail */ | |
2500 | if (status != FCPIO_SUCCESS) { | |
2501 | spin_lock_irqsave(io_lock, flags); | |
2502 | FNIC_SCSI_DBG(KERN_DEBUG, | |
2503 | fnic->lport->host, | |
2504 | "Device reset completed - failed\n"); | |
2505 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
2506 | goto fnic_device_reset_clean; | |
2507 | } | |
2508 | ||
2509 | /* | |
2510 | * Clean up any aborts on this lun that have still not | |
2511 | * completed. If any of these fail, then LUN reset fails. | |
2512 | * clean_pending_aborts cleans all cmds on this lun except | |
2513 | * the lun reset cmd. If all cmds get cleaned, the lun reset | |
2514 | * succeeds | |
2515 | */ | |
a36f5dd0 | 2516 | if (fnic_clean_pending_aborts(fnic, sc, new_sc)) { |
5df6d737 AJ |
2517 | spin_lock_irqsave(io_lock, flags); |
2518 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
2519 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
2520 | "Device reset failed" | |
2521 | " since could not abort all IOs\n"); | |
2522 | goto fnic_device_reset_clean; | |
2523 | } | |
2524 | ||
2525 | /* Clean lun reset command */ | |
2526 | spin_lock_irqsave(io_lock, flags); | |
2527 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
2528 | if (io_req) | |
2529 | /* Completed, and successful */ | |
2530 | ret = SUCCESS; | |
2531 | ||
2532 | fnic_device_reset_clean: | |
2533 | if (io_req) | |
2534 | CMD_SP(sc) = NULL; | |
2535 | ||
2536 | spin_unlock_irqrestore(io_lock, flags); | |
2537 | ||
2538 | if (io_req) { | |
14eb5d90 | 2539 | start_time = io_req->start_time; |
5df6d737 AJ |
2540 | fnic_release_ioreq_buf(fnic, io_req, sc); |
2541 | mempool_free(io_req, fnic->io_req_pool); | |
2542 | } | |
2543 | ||
2544 | fnic_device_reset_end: | |
4d7007b4 HP |
2545 | FNIC_TRACE(fnic_device_reset, sc->device->host->host_no, |
2546 | sc->request->tag, sc, | |
2547 | jiffies_to_msecs(jiffies - start_time), | |
2548 | 0, ((u64)sc->cmnd[0] << 32 | | |
2549 | (u64)sc->cmnd[2] << 24 | (u64)sc->cmnd[3] << 16 | | |
2550 | (u64)sc->cmnd[4] << 8 | sc->cmnd[5]), | |
2551 | (((u64)CMD_FLAGS(sc) << 32) | CMD_STATE(sc))); | |
2552 | ||
03298552 HP |
2553 | /* free tag if it is allocated */ |
2554 | if (unlikely(tag_gen_flag)) | |
2555 | fnic_scsi_host_end_tag(fnic, sc); | |
2556 | ||
5df6d737 AJ |
2557 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
2558 | "Returning from device reset %s\n", | |
2559 | (ret == SUCCESS) ? | |
2560 | "SUCCESS" : "FAILED"); | |
67125b02 HP |
2561 | |
2562 | if (ret == FAILED) | |
2563 | atomic64_inc(&reset_stats->device_reset_failures); | |
2564 | ||
5df6d737 AJ |
2565 | return ret; |
2566 | } | |
2567 | ||
2568 | /* Clean up all IOs, clean up libFC local port */ | |
2569 | int fnic_reset(struct Scsi_Host *shost) | |
2570 | { | |
2571 | struct fc_lport *lp; | |
2572 | struct fnic *fnic; | |
441fbd25 | 2573 | int ret = 0; |
67125b02 | 2574 | struct reset_stats *reset_stats; |
5df6d737 AJ |
2575 | |
2576 | lp = shost_priv(shost); | |
2577 | fnic = lport_priv(lp); | |
67125b02 | 2578 | reset_stats = &fnic->fnic_stats.reset_stats; |
5df6d737 AJ |
2579 | |
2580 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
2581 | "fnic_reset called\n"); | |
2582 | ||
67125b02 HP |
2583 | atomic64_inc(&reset_stats->fnic_resets); |
2584 | ||
5df6d737 AJ |
2585 | /* |
2586 | * Reset local port, this will clean up libFC exchanges, | |
2587 | * reset remote port sessions, and if link is up, begin flogi | |
2588 | */ | |
31c0a631 | 2589 | ret = fc_lport_reset(lp); |
5df6d737 AJ |
2590 | |
2591 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
2592 | "Returning from fnic reset %s\n", | |
441fbd25 | 2593 | (ret == 0) ? |
5df6d737 AJ |
2594 | "SUCCESS" : "FAILED"); |
2595 | ||
67125b02 HP |
2596 | if (ret == 0) |
2597 | atomic64_inc(&reset_stats->fnic_reset_completions); | |
2598 | else | |
2599 | atomic64_inc(&reset_stats->fnic_reset_failures); | |
2600 | ||
5df6d737 AJ |
2601 | return ret; |
2602 | } | |
2603 | ||
2604 | /* | |
2605 | * SCSI Error handling calls driver's eh_host_reset if all prior | |
2606 | * error handling levels return FAILED. If host reset completes | |
2607 | * successfully, and if link is up, then Fabric login begins. | |
2608 | * | |
2609 | * Host Reset is the highest level of error recovery. If this fails, then | |
2610 | * host is offlined by SCSI. | |
2611 | * | |
2612 | */ | |
2613 | int fnic_host_reset(struct scsi_cmnd *sc) | |
2614 | { | |
2615 | int ret; | |
2616 | unsigned long wait_host_tmo; | |
2617 | struct Scsi_Host *shost = sc->device->host; | |
2618 | struct fc_lport *lp = shost_priv(shost); | |
9698b6f4 SK |
2619 | struct fnic *fnic = lport_priv(lp); |
2620 | unsigned long flags; | |
2621 | ||
2622 | spin_lock_irqsave(&fnic->fnic_lock, flags); | |
2623 | if (fnic->internal_reset_inprogress == 0) { | |
2624 | fnic->internal_reset_inprogress = 1; | |
2625 | } else { | |
2626 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
2627 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
2628 | "host reset in progress skipping another host reset\n"); | |
2629 | return SUCCESS; | |
2630 | } | |
2631 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
5df6d737 AJ |
2632 | |
2633 | /* | |
2634 | * If fnic_reset is successful, wait for fabric login to complete | |
2635 | * scsi-ml tries to send a TUR to every device if host reset is | |
2636 | * successful, so before returning to scsi, fabric should be up | |
2637 | */ | |
441fbd25 | 2638 | ret = (fnic_reset(shost) == 0) ? SUCCESS : FAILED; |
5df6d737 AJ |
2639 | if (ret == SUCCESS) { |
2640 | wait_host_tmo = jiffies + FNIC_HOST_RESET_SETTLE_TIME * HZ; | |
2641 | ret = FAILED; | |
2642 | while (time_before(jiffies, wait_host_tmo)) { | |
2643 | if ((lp->state == LPORT_ST_READY) && | |
2644 | (lp->link_up)) { | |
2645 | ret = SUCCESS; | |
2646 | break; | |
2647 | } | |
2648 | ssleep(1); | |
2649 | } | |
2650 | } | |
2651 | ||
9698b6f4 SK |
2652 | spin_lock_irqsave(&fnic->fnic_lock, flags); |
2653 | fnic->internal_reset_inprogress = 0; | |
2654 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
5df6d737 AJ |
2655 | return ret; |
2656 | } | |
2657 | ||
2658 | /* | |
2659 | * This fxn is called from libFC when host is removed | |
2660 | */ | |
2661 | void fnic_scsi_abort_io(struct fc_lport *lp) | |
2662 | { | |
2663 | int err = 0; | |
2664 | unsigned long flags; | |
2665 | enum fnic_state old_state; | |
2666 | struct fnic *fnic = lport_priv(lp); | |
2667 | DECLARE_COMPLETION_ONSTACK(remove_wait); | |
2668 | ||
2669 | /* Issue firmware reset for fnic, wait for reset to complete */ | |
03298552 | 2670 | retry_fw_reset: |
5df6d737 | 2671 | spin_lock_irqsave(&fnic->fnic_lock, flags); |
03298552 HP |
2672 | if (unlikely(fnic->state == FNIC_IN_FC_TRANS_ETH_MODE)) { |
2673 | /* fw reset is in progress, poll for its completion */ | |
2674 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
2675 | schedule_timeout(msecs_to_jiffies(100)); | |
2676 | goto retry_fw_reset; | |
2677 | } | |
2678 | ||
5df6d737 AJ |
2679 | fnic->remove_wait = &remove_wait; |
2680 | old_state = fnic->state; | |
2681 | fnic->state = FNIC_IN_FC_TRANS_ETH_MODE; | |
78112e55 | 2682 | fnic_update_mac_locked(fnic, fnic->ctlr.ctl_src_addr); |
5df6d737 AJ |
2683 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); |
2684 | ||
2685 | err = fnic_fw_reset_handler(fnic); | |
2686 | if (err) { | |
2687 | spin_lock_irqsave(&fnic->fnic_lock, flags); | |
2688 | if (fnic->state == FNIC_IN_FC_TRANS_ETH_MODE) | |
2689 | fnic->state = old_state; | |
2690 | fnic->remove_wait = NULL; | |
2691 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
2692 | return; | |
2693 | } | |
2694 | ||
2695 | /* Wait for firmware reset to complete */ | |
2696 | wait_for_completion_timeout(&remove_wait, | |
2697 | msecs_to_jiffies(FNIC_RMDEVICE_TIMEOUT)); | |
2698 | ||
2699 | spin_lock_irqsave(&fnic->fnic_lock, flags); | |
2700 | fnic->remove_wait = NULL; | |
2701 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
2702 | "fnic_scsi_abort_io %s\n", | |
2703 | (fnic->state == FNIC_IN_ETH_MODE) ? | |
2704 | "SUCCESS" : "FAILED"); | |
2705 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
2706 | ||
2707 | } | |
2708 | ||
2709 | /* | |
2710 | * This fxn called from libFC to clean up driver IO state on link down | |
2711 | */ | |
2712 | void fnic_scsi_cleanup(struct fc_lport *lp) | |
2713 | { | |
2714 | unsigned long flags; | |
2715 | enum fnic_state old_state; | |
2716 | struct fnic *fnic = lport_priv(lp); | |
2717 | ||
2718 | /* issue fw reset */ | |
03298552 | 2719 | retry_fw_reset: |
5df6d737 | 2720 | spin_lock_irqsave(&fnic->fnic_lock, flags); |
03298552 HP |
2721 | if (unlikely(fnic->state == FNIC_IN_FC_TRANS_ETH_MODE)) { |
2722 | /* fw reset is in progress, poll for its completion */ | |
2723 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
2724 | schedule_timeout(msecs_to_jiffies(100)); | |
2725 | goto retry_fw_reset; | |
2726 | } | |
5df6d737 AJ |
2727 | old_state = fnic->state; |
2728 | fnic->state = FNIC_IN_FC_TRANS_ETH_MODE; | |
78112e55 | 2729 | fnic_update_mac_locked(fnic, fnic->ctlr.ctl_src_addr); |
5df6d737 AJ |
2730 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); |
2731 | ||
2732 | if (fnic_fw_reset_handler(fnic)) { | |
2733 | spin_lock_irqsave(&fnic->fnic_lock, flags); | |
2734 | if (fnic->state == FNIC_IN_FC_TRANS_ETH_MODE) | |
2735 | fnic->state = old_state; | |
2736 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
2737 | } | |
2738 | ||
2739 | } | |
2740 | ||
2741 | void fnic_empty_scsi_cleanup(struct fc_lport *lp) | |
2742 | { | |
2743 | } | |
2744 | ||
2745 | void fnic_exch_mgr_reset(struct fc_lport *lp, u32 sid, u32 did) | |
2746 | { | |
2747 | struct fnic *fnic = lport_priv(lp); | |
2748 | ||
2749 | /* Non-zero sid, nothing to do */ | |
2750 | if (sid) | |
2751 | goto call_fc_exch_mgr_reset; | |
2752 | ||
2753 | if (did) { | |
2754 | fnic_rport_exch_reset(fnic, did); | |
2755 | goto call_fc_exch_mgr_reset; | |
2756 | } | |
2757 | ||
2758 | /* | |
2759 | * sid = 0, did = 0 | |
2760 | * link down or device being removed | |
2761 | */ | |
2762 | if (!fnic->in_remove) | |
2763 | fnic_scsi_cleanup(lp); | |
2764 | else | |
2765 | fnic_scsi_abort_io(lp); | |
2766 | ||
2767 | /* call libFC exch mgr reset to reset its exchanges */ | |
2768 | call_fc_exch_mgr_reset: | |
2769 | fc_exch_mgr_reset(lp, sid, did); | |
2770 | ||
2771 | } | |
a0bf1ca2 HP |
2772 | |
2773 | /* | |
2774 | * fnic_is_abts_pending() is a helper function that | |
2775 | * walks through tag map to check if there is any IOs pending,if there is one, | |
2776 | * then it returns 1 (true), otherwise 0 (false) | |
2777 | * if @lr_sc is non NULL, then it checks IOs specific to particular LUN, | |
2778 | * otherwise, it checks for all IOs. | |
2779 | */ | |
2780 | int fnic_is_abts_pending(struct fnic *fnic, struct scsi_cmnd *lr_sc) | |
2781 | { | |
2782 | int tag; | |
2783 | struct fnic_io_req *io_req; | |
2784 | spinlock_t *io_lock; | |
2785 | unsigned long flags; | |
2786 | int ret = 0; | |
2787 | struct scsi_cmnd *sc; | |
2788 | struct scsi_device *lun_dev = NULL; | |
2789 | ||
2790 | if (lr_sc) | |
2791 | lun_dev = lr_sc->device; | |
2792 | ||
2793 | /* walk again to check, if IOs are still pending in fw */ | |
fc85799e | 2794 | for (tag = 0; tag < fnic->fnic_max_tag_id; tag++) { |
a0bf1ca2 HP |
2795 | sc = scsi_host_find_tag(fnic->lport->host, tag); |
2796 | /* | |
2797 | * ignore this lun reset cmd or cmds that do not belong to | |
2798 | * this lun | |
2799 | */ | |
2800 | if (!sc || (lr_sc && (sc->device != lun_dev || sc == lr_sc))) | |
2801 | continue; | |
2802 | ||
2803 | io_lock = fnic_io_lock_hash(fnic, sc); | |
2804 | spin_lock_irqsave(io_lock, flags); | |
2805 | ||
2806 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
2807 | ||
2808 | if (!io_req || sc->device != lun_dev) { | |
2809 | spin_unlock_irqrestore(io_lock, flags); | |
2810 | continue; | |
2811 | } | |
2812 | ||
2813 | /* | |
2814 | * Found IO that is still pending with firmware and | |
2815 | * belongs to the LUN that we are resetting | |
2816 | */ | |
2817 | FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host, | |
2818 | "Found IO in %s on lun\n", | |
2819 | fnic_ioreq_state_to_str(CMD_STATE(sc))); | |
2820 | ||
5d65f918 | 2821 | if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) |
a0bf1ca2 | 2822 | ret = 1; |
5d65f918 | 2823 | spin_unlock_irqrestore(io_lock, flags); |
a0bf1ca2 HP |
2824 | } |
2825 | ||
2826 | return ret; | |
2827 | } |