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