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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> | |
51d263cb | 26 | #include <linux/etherdevice.h> |
5df6d737 AJ |
27 | #include <linux/if_ether.h> |
28 | #include <linux/if_vlan.h> | |
29 | #include <linux/delay.h> | |
5a0e3ad6 | 30 | #include <linux/gfp.h> |
5df6d737 AJ |
31 | #include <scsi/scsi.h> |
32 | #include <scsi/scsi_host.h> | |
33 | #include <scsi/scsi_device.h> | |
34 | #include <scsi/scsi_cmnd.h> | |
35 | #include <scsi/scsi_tcq.h> | |
36 | #include <scsi/fc/fc_els.h> | |
37 | #include <scsi/fc/fc_fcoe.h> | |
38 | #include <scsi/libfc.h> | |
39 | #include <scsi/fc_frame.h> | |
40 | #include "fnic_io.h" | |
41 | #include "fnic.h" | |
42 | ||
43 | const char *fnic_state_str[] = { | |
44 | [FNIC_IN_FC_MODE] = "FNIC_IN_FC_MODE", | |
45 | [FNIC_IN_FC_TRANS_ETH_MODE] = "FNIC_IN_FC_TRANS_ETH_MODE", | |
46 | [FNIC_IN_ETH_MODE] = "FNIC_IN_ETH_MODE", | |
47 | [FNIC_IN_ETH_TRANS_FC_MODE] = "FNIC_IN_ETH_TRANS_FC_MODE", | |
48 | }; | |
49 | ||
50 | static const char *fnic_ioreq_state_str[] = { | |
14eb5d90 | 51 | [FNIC_IOREQ_NOT_INITED] = "FNIC_IOREQ_NOT_INITED", |
5df6d737 AJ |
52 | [FNIC_IOREQ_CMD_PENDING] = "FNIC_IOREQ_CMD_PENDING", |
53 | [FNIC_IOREQ_ABTS_PENDING] = "FNIC_IOREQ_ABTS_PENDING", | |
54 | [FNIC_IOREQ_ABTS_COMPLETE] = "FNIC_IOREQ_ABTS_COMPLETE", | |
55 | [FNIC_IOREQ_CMD_COMPLETE] = "FNIC_IOREQ_CMD_COMPLETE", | |
56 | }; | |
57 | ||
58 | static const char *fcpio_status_str[] = { | |
59 | [FCPIO_SUCCESS] = "FCPIO_SUCCESS", /*0x0*/ | |
60 | [FCPIO_INVALID_HEADER] = "FCPIO_INVALID_HEADER", | |
61 | [FCPIO_OUT_OF_RESOURCE] = "FCPIO_OUT_OF_RESOURCE", | |
62 | [FCPIO_INVALID_PARAM] = "FCPIO_INVALID_PARAM]", | |
63 | [FCPIO_REQ_NOT_SUPPORTED] = "FCPIO_REQ_NOT_SUPPORTED", | |
64 | [FCPIO_IO_NOT_FOUND] = "FCPIO_IO_NOT_FOUND", | |
65 | [FCPIO_ABORTED] = "FCPIO_ABORTED", /*0x41*/ | |
66 | [FCPIO_TIMEOUT] = "FCPIO_TIMEOUT", | |
67 | [FCPIO_SGL_INVALID] = "FCPIO_SGL_INVALID", | |
68 | [FCPIO_MSS_INVALID] = "FCPIO_MSS_INVALID", | |
69 | [FCPIO_DATA_CNT_MISMATCH] = "FCPIO_DATA_CNT_MISMATCH", | |
70 | [FCPIO_FW_ERR] = "FCPIO_FW_ERR", | |
71 | [FCPIO_ITMF_REJECTED] = "FCPIO_ITMF_REJECTED", | |
72 | [FCPIO_ITMF_FAILED] = "FCPIO_ITMF_FAILED", | |
73 | [FCPIO_ITMF_INCORRECT_LUN] = "FCPIO_ITMF_INCORRECT_LUN", | |
74 | [FCPIO_CMND_REJECTED] = "FCPIO_CMND_REJECTED", | |
75 | [FCPIO_NO_PATH_AVAIL] = "FCPIO_NO_PATH_AVAIL", | |
76 | [FCPIO_PATH_FAILED] = "FCPIO_PATH_FAILED", | |
77 | [FCPIO_LUNMAP_CHNG_PEND] = "FCPIO_LUNHMAP_CHNG_PEND", | |
78 | }; | |
79 | ||
80 | const char *fnic_state_to_str(unsigned int state) | |
81 | { | |
82 | if (state >= ARRAY_SIZE(fnic_state_str) || !fnic_state_str[state]) | |
83 | return "unknown"; | |
84 | ||
85 | return fnic_state_str[state]; | |
86 | } | |
87 | ||
88 | static const char *fnic_ioreq_state_to_str(unsigned int state) | |
89 | { | |
90 | if (state >= ARRAY_SIZE(fnic_ioreq_state_str) || | |
91 | !fnic_ioreq_state_str[state]) | |
92 | return "unknown"; | |
93 | ||
94 | return fnic_ioreq_state_str[state]; | |
95 | } | |
96 | ||
97 | static const char *fnic_fcpio_status_to_str(unsigned int status) | |
98 | { | |
99 | if (status >= ARRAY_SIZE(fcpio_status_str) || !fcpio_status_str[status]) | |
100 | return "unknown"; | |
101 | ||
102 | return fcpio_status_str[status]; | |
103 | } | |
104 | ||
3ba1eeff | 105 | static void fnic_cleanup_io(struct fnic *fnic); |
5df6d737 AJ |
106 | |
107 | static inline spinlock_t *fnic_io_lock_hash(struct fnic *fnic, | |
108 | struct scsi_cmnd *sc) | |
109 | { | |
e1c9f0cf | 110 | u32 hash = scsi_cmd_to_rq(sc)->tag & (FNIC_IO_LOCKS - 1); |
5df6d737 AJ |
111 | |
112 | return &fnic->io_req_lock[hash]; | |
113 | } | |
114 | ||
1259c5dc SB |
115 | static inline spinlock_t *fnic_io_lock_tag(struct fnic *fnic, |
116 | int tag) | |
117 | { | |
118 | return &fnic->io_req_lock[tag & (FNIC_IO_LOCKS - 1)]; | |
119 | } | |
120 | ||
5df6d737 AJ |
121 | /* |
122 | * Unmap the data buffer and sense buffer for an io_req, | |
123 | * also unmap and free the device-private scatter/gather list. | |
124 | */ | |
125 | static void fnic_release_ioreq_buf(struct fnic *fnic, | |
126 | struct fnic_io_req *io_req, | |
127 | struct scsi_cmnd *sc) | |
128 | { | |
129 | if (io_req->sgl_list_pa) | |
7f9b0f77 | 130 | dma_unmap_single(&fnic->pdev->dev, io_req->sgl_list_pa, |
5df6d737 | 131 | sizeof(io_req->sgl_list[0]) * io_req->sgl_cnt, |
7f9b0f77 | 132 | DMA_TO_DEVICE); |
5df6d737 AJ |
133 | scsi_dma_unmap(sc); |
134 | ||
135 | if (io_req->sgl_cnt) | |
136 | mempool_free(io_req->sgl_list_alloc, | |
137 | fnic->io_sgl_pool[io_req->sgl_type]); | |
138 | if (io_req->sense_buf_pa) | |
7f9b0f77 CH |
139 | dma_unmap_single(&fnic->pdev->dev, io_req->sense_buf_pa, |
140 | SCSI_SENSE_BUFFERSIZE, DMA_FROM_DEVICE); | |
5df6d737 AJ |
141 | } |
142 | ||
143 | /* Free up Copy Wq descriptors. Called with copy_wq lock held */ | |
144 | static int free_wq_copy_descs(struct fnic *fnic, struct vnic_wq_copy *wq) | |
145 | { | |
146 | /* if no Ack received from firmware, then nothing to clean */ | |
147 | if (!fnic->fw_ack_recd[0]) | |
148 | return 1; | |
149 | ||
150 | /* | |
151 | * Update desc_available count based on number of freed descriptors | |
152 | * Account for wraparound | |
153 | */ | |
154 | if (wq->to_clean_index <= fnic->fw_ack_index[0]) | |
155 | wq->ring.desc_avail += (fnic->fw_ack_index[0] | |
156 | - wq->to_clean_index + 1); | |
157 | else | |
158 | wq->ring.desc_avail += (wq->ring.desc_count | |
159 | - wq->to_clean_index | |
160 | + fnic->fw_ack_index[0] + 1); | |
161 | ||
162 | /* | |
163 | * just bump clean index to ack_index+1 accounting for wraparound | |
164 | * this will essentially free up all descriptors between | |
165 | * to_clean_index and fw_ack_index, both inclusive | |
166 | */ | |
167 | wq->to_clean_index = | |
168 | (fnic->fw_ack_index[0] + 1) % wq->ring.desc_count; | |
169 | ||
170 | /* we have processed the acks received so far */ | |
171 | fnic->fw_ack_recd[0] = 0; | |
172 | return 0; | |
173 | } | |
174 | ||
175 | ||
c7eab070 | 176 | /* |
03298552 HP |
177 | * __fnic_set_state_flags |
178 | * Sets/Clears bits in fnic's state_flags | |
179 | **/ | |
180 | void | |
181 | __fnic_set_state_flags(struct fnic *fnic, unsigned long st_flags, | |
182 | unsigned long clearbits) | |
183 | { | |
03298552 | 184 | unsigned long flags = 0; |
68f03bd1 | 185 | unsigned long host_lock_flags = 0; |
03298552 | 186 | |
68f03bd1 SK |
187 | spin_lock_irqsave(&fnic->fnic_lock, flags); |
188 | spin_lock_irqsave(fnic->lport->host->host_lock, host_lock_flags); | |
03298552 HP |
189 | |
190 | if (clearbits) | |
191 | fnic->state_flags &= ~st_flags; | |
192 | else | |
193 | fnic->state_flags |= st_flags; | |
194 | ||
68f03bd1 SK |
195 | spin_unlock_irqrestore(fnic->lport->host->host_lock, host_lock_flags); |
196 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
03298552 HP |
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) { |
51d263cb | 279 | eth_broadcast_addr(gw_mac); |
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; | |
5df6d737 AJ |
333 | |
334 | if (sg_count) { | |
5df6d737 AJ |
335 | /* For each SGE, create a device desc entry */ |
336 | desc = io_req->sgl_list; | |
337 | for_each_sg(scsi_sglist(sc), sg, sg_count, i) { | |
338 | desc->addr = cpu_to_le64(sg_dma_address(sg)); | |
339 | desc->len = cpu_to_le32(sg_dma_len(sg)); | |
340 | desc->_resvd = 0; | |
341 | desc++; | |
342 | } | |
343 | ||
7f9b0f77 CH |
344 | io_req->sgl_list_pa = dma_map_single(&fnic->pdev->dev, |
345 | io_req->sgl_list, | |
346 | sizeof(io_req->sgl_list[0]) * sg_count, | |
347 | DMA_TO_DEVICE); | |
348 | if (dma_mapping_error(&fnic->pdev->dev, io_req->sgl_list_pa)) { | |
349 | printk(KERN_ERR "DMA mapping failed\n"); | |
fd6ddfa4 ML |
350 | return SCSI_MLQUEUE_HOST_BUSY; |
351 | } | |
5df6d737 AJ |
352 | } |
353 | ||
7f9b0f77 | 354 | io_req->sense_buf_pa = dma_map_single(&fnic->pdev->dev, |
5df6d737 AJ |
355 | sc->sense_buffer, |
356 | SCSI_SENSE_BUFFERSIZE, | |
7f9b0f77 CH |
357 | DMA_FROM_DEVICE); |
358 | if (dma_mapping_error(&fnic->pdev->dev, io_req->sense_buf_pa)) { | |
359 | dma_unmap_single(&fnic->pdev->dev, io_req->sgl_list_pa, | |
fd6ddfa4 | 360 | sizeof(io_req->sgl_list[0]) * sg_count, |
7f9b0f77 CH |
361 | DMA_TO_DEVICE); |
362 | printk(KERN_ERR "DMA mapping failed\n"); | |
fd6ddfa4 ML |
363 | return SCSI_MLQUEUE_HOST_BUSY; |
364 | } | |
365 | ||
5df6d737 AJ |
366 | int_to_scsilun(sc->device->lun, &fc_lun); |
367 | ||
5df6d737 AJ |
368 | /* Enqueue the descriptor in the Copy WQ */ |
369 | spin_lock_irqsave(&fnic->wq_copy_lock[0], intr_flags); | |
370 | ||
371 | if (vnic_wq_copy_desc_avail(wq) <= fnic->wq_copy_desc_low[0]) | |
372 | free_wq_copy_descs(fnic, wq); | |
373 | ||
374 | if (unlikely(!vnic_wq_copy_desc_avail(wq))) { | |
375 | spin_unlock_irqrestore(&fnic->wq_copy_lock[0], intr_flags); | |
14eb5d90 HP |
376 | FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host, |
377 | "fnic_queue_wq_copy_desc failure - no descriptors\n"); | |
67125b02 | 378 | atomic64_inc(&misc_stats->io_cpwq_alloc_failures); |
5df6d737 AJ |
379 | return SCSI_MLQUEUE_HOST_BUSY; |
380 | } | |
381 | ||
382 | flags = 0; | |
383 | if (sc->sc_data_direction == DMA_FROM_DEVICE) | |
384 | flags = FCPIO_ICMND_RDDATA; | |
385 | else if (sc->sc_data_direction == DMA_TO_DEVICE) | |
386 | flags = FCPIO_ICMND_WRDATA; | |
387 | ||
388 | exch_flags = 0; | |
389 | if ((fnic->config.flags & VFCF_FCP_SEQ_LVL_ERR) && | |
390 | (rp->flags & FC_RP_FLAGS_RETRY)) | |
391 | exch_flags |= FCPIO_ICMND_SRFLAG_RETRY; | |
392 | ||
e1c9f0cf | 393 | fnic_queue_wq_copy_desc_icmnd_16(wq, scsi_cmd_to_rq(sc)->tag, |
5df6d737 AJ |
394 | 0, exch_flags, io_req->sgl_cnt, |
395 | SCSI_SENSE_BUFFERSIZE, | |
396 | io_req->sgl_list_pa, | |
397 | io_req->sense_buf_pa, | |
398 | 0, /* scsi cmd ref, always 0 */ | |
50668633 CH |
399 | FCPIO_ICMND_PTA_SIMPLE, |
400 | /* scsi pri and tag */ | |
5df6d737 | 401 | flags, /* command flags */ |
4b53662b AJ |
402 | sc->cmnd, sc->cmd_len, |
403 | scsi_bufflen(sc), | |
5df6d737 AJ |
404 | fc_lun.scsi_lun, io_req->port_id, |
405 | rport->maxframe_size, rp->r_a_tov, | |
406 | rp->e_d_tov); | |
407 | ||
67125b02 HP |
408 | atomic64_inc(&fnic->fnic_stats.fw_stats.active_fw_reqs); |
409 | if (atomic64_read(&fnic->fnic_stats.fw_stats.active_fw_reqs) > | |
410 | atomic64_read(&fnic->fnic_stats.fw_stats.max_fw_reqs)) | |
411 | atomic64_set(&fnic->fnic_stats.fw_stats.max_fw_reqs, | |
412 | atomic64_read(&fnic->fnic_stats.fw_stats.active_fw_reqs)); | |
413 | ||
5df6d737 AJ |
414 | spin_unlock_irqrestore(&fnic->wq_copy_lock[0], intr_flags); |
415 | return 0; | |
416 | } | |
417 | ||
418 | /* | |
419 | * fnic_queuecommand | |
420 | * Routine to send a scsi cdb | |
421 | * Called with host_lock held and interrupts disabled. | |
422 | */ | |
f281233d | 423 | static int fnic_queuecommand_lck(struct scsi_cmnd *sc, void (*done)(struct scsi_cmnd *)) |
5df6d737 | 424 | { |
e1c9f0cf | 425 | const int tag = scsi_cmd_to_rq(sc)->tag; |
03298552 | 426 | struct fc_lport *lp = shost_priv(sc->device->host); |
5df6d737 | 427 | struct fc_rport *rport; |
4d7007b4 | 428 | struct fnic_io_req *io_req = NULL; |
03298552 | 429 | struct fnic *fnic = lport_priv(lp); |
67125b02 | 430 | struct fnic_stats *fnic_stats = &fnic->fnic_stats; |
5df6d737 AJ |
431 | struct vnic_wq_copy *wq; |
432 | int ret; | |
4d7007b4 HP |
433 | u64 cmd_trace; |
434 | int sg_count = 0; | |
41df7b02 | 435 | unsigned long flags = 0; |
5df6d737 | 436 | unsigned long ptr; |
41df7b02 | 437 | spinlock_t *io_lock = NULL; |
db196935 | 438 | int io_lock_acquired = 0; |
6008e96b | 439 | struct fc_rport_libfc_priv *rp; |
5df6d737 | 440 | |
03298552 HP |
441 | if (unlikely(fnic_chk_state_flags_locked(fnic, FNIC_FLAGS_IO_BLOCKED))) |
442 | return SCSI_MLQUEUE_HOST_BUSY; | |
443 | ||
0e220962 HR |
444 | if (unlikely(fnic_chk_state_flags_locked(fnic, FNIC_FLAGS_FWRESET))) |
445 | return SCSI_MLQUEUE_HOST_BUSY; | |
446 | ||
5df6d737 | 447 | rport = starget_to_rport(scsi_target(sc->device)); |
6008e96b SK |
448 | if (!rport) { |
449 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
450 | "returning DID_NO_CONNECT for IO as rport is NULL\n"); | |
451 | sc->result = DID_NO_CONNECT << 16; | |
452 | done(sc); | |
453 | return 0; | |
454 | } | |
455 | ||
5df6d737 AJ |
456 | ret = fc_remote_port_chkready(rport); |
457 | if (ret) { | |
6008e96b SK |
458 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
459 | "rport is not ready\n"); | |
67125b02 | 460 | atomic64_inc(&fnic_stats->misc_stats.rport_not_ready); |
5df6d737 AJ |
461 | sc->result = ret; |
462 | done(sc); | |
463 | return 0; | |
464 | } | |
465 | ||
6008e96b | 466 | rp = rport->dd_data; |
4a1108d6 | 467 | if (!rp || rp->rp_state == RPORT_ST_DELETE) { |
6008e96b | 468 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
4a1108d6 SK |
469 | "rport 0x%x removed, returning DID_NO_CONNECT\n", |
470 | rport->port_id); | |
471 | ||
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 | ||
4a1108d6 SK |
478 | if (rp->rp_state != RPORT_ST_READY) { |
479 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
480 | "rport 0x%x in state 0x%x, returning DID_IMM_RETRY\n", | |
481 | rport->port_id, rp->rp_state); | |
482 | ||
483 | sc->result = DID_IMM_RETRY << 16; | |
484 | done(sc); | |
485 | return 0; | |
486 | } | |
487 | ||
5df6d737 AJ |
488 | if (lp->state != LPORT_ST_READY || !(lp->link_up)) |
489 | return SCSI_MLQUEUE_HOST_BUSY; | |
490 | ||
03298552 HP |
491 | atomic_inc(&fnic->in_flight); |
492 | ||
5df6d737 AJ |
493 | /* |
494 | * Release host lock, use driver resource specific locks from here. | |
495 | * Don't re-enable interrupts in case they were disabled prior to the | |
496 | * caller disabling them. | |
497 | */ | |
498 | spin_unlock(lp->host->host_lock); | |
14eb5d90 HP |
499 | CMD_STATE(sc) = FNIC_IOREQ_NOT_INITED; |
500 | CMD_FLAGS(sc) = FNIC_NO_FLAGS; | |
5df6d737 AJ |
501 | |
502 | /* Get a new io_req for this SCSI IO */ | |
5df6d737 AJ |
503 | io_req = mempool_alloc(fnic->io_req_pool, GFP_ATOMIC); |
504 | if (!io_req) { | |
67125b02 | 505 | atomic64_inc(&fnic_stats->io_stats.alloc_failures); |
5df6d737 AJ |
506 | ret = SCSI_MLQUEUE_HOST_BUSY; |
507 | goto out; | |
508 | } | |
509 | memset(io_req, 0, sizeof(*io_req)); | |
510 | ||
511 | /* Map the data buffer */ | |
512 | sg_count = scsi_dma_map(sc); | |
513 | if (sg_count < 0) { | |
4d7007b4 | 514 | FNIC_TRACE(fnic_queuecommand, sc->device->host->host_no, |
e1c9f0cf | 515 | tag, sc, 0, sc->cmnd[0], sg_count, CMD_STATE(sc)); |
5df6d737 AJ |
516 | mempool_free(io_req, fnic->io_req_pool); |
517 | goto out; | |
518 | } | |
519 | ||
520 | /* Determine the type of scatter/gather list we need */ | |
521 | io_req->sgl_cnt = sg_count; | |
522 | io_req->sgl_type = FNIC_SGL_CACHE_DFLT; | |
523 | if (sg_count > FNIC_DFLT_SG_DESC_CNT) | |
524 | io_req->sgl_type = FNIC_SGL_CACHE_MAX; | |
525 | ||
526 | if (sg_count) { | |
527 | io_req->sgl_list = | |
528 | mempool_alloc(fnic->io_sgl_pool[io_req->sgl_type], | |
0c79c742 | 529 | GFP_ATOMIC); |
5df6d737 | 530 | if (!io_req->sgl_list) { |
67125b02 | 531 | atomic64_inc(&fnic_stats->io_stats.alloc_failures); |
5df6d737 AJ |
532 | ret = SCSI_MLQUEUE_HOST_BUSY; |
533 | scsi_dma_unmap(sc); | |
534 | mempool_free(io_req, fnic->io_req_pool); | |
535 | goto out; | |
536 | } | |
537 | ||
538 | /* Cache sgl list allocated address before alignment */ | |
539 | io_req->sgl_list_alloc = io_req->sgl_list; | |
540 | ptr = (unsigned long) io_req->sgl_list; | |
541 | if (ptr % FNIC_SG_DESC_ALIGN) { | |
542 | io_req->sgl_list = (struct host_sg_desc *) | |
543 | (((unsigned long) ptr | |
544 | + FNIC_SG_DESC_ALIGN - 1) | |
545 | & ~(FNIC_SG_DESC_ALIGN - 1)); | |
546 | } | |
547 | } | |
548 | ||
41df7b02 HS |
549 | /* |
550 | * Will acquire lock defore setting to IO initialized. | |
551 | */ | |
552 | ||
553 | io_lock = fnic_io_lock_hash(fnic, sc); | |
554 | spin_lock_irqsave(io_lock, flags); | |
555 | ||
5df6d737 | 556 | /* initialize rest of io_req */ |
db196935 | 557 | io_lock_acquired = 1; |
5df6d737 | 558 | io_req->port_id = rport->port_id; |
14eb5d90 | 559 | io_req->start_time = jiffies; |
5df6d737 AJ |
560 | CMD_STATE(sc) = FNIC_IOREQ_CMD_PENDING; |
561 | CMD_SP(sc) = (char *)io_req; | |
14eb5d90 | 562 | CMD_FLAGS(sc) |= FNIC_IO_INITIALIZED; |
5df6d737 AJ |
563 | sc->scsi_done = done; |
564 | ||
565 | /* create copy wq desc and enqueue it */ | |
566 | wq = &fnic->wq_copy[0]; | |
567 | ret = fnic_queue_wq_copy_desc(fnic, wq, io_req, sc, sg_count); | |
568 | if (ret) { | |
569 | /* | |
570 | * In case another thread cancelled the request, | |
571 | * refetch the pointer under the lock. | |
572 | */ | |
4d7007b4 | 573 | FNIC_TRACE(fnic_queuecommand, sc->device->host->host_no, |
e1c9f0cf | 574 | tag, sc, 0, 0, 0, |
4d7007b4 | 575 | (((u64)CMD_FLAGS(sc) << 32) | CMD_STATE(sc))); |
5df6d737 AJ |
576 | io_req = (struct fnic_io_req *)CMD_SP(sc); |
577 | CMD_SP(sc) = NULL; | |
578 | CMD_STATE(sc) = FNIC_IOREQ_CMD_COMPLETE; | |
579 | spin_unlock_irqrestore(io_lock, flags); | |
580 | if (io_req) { | |
581 | fnic_release_ioreq_buf(fnic, io_req, sc); | |
582 | mempool_free(io_req, fnic->io_req_pool); | |
583 | } | |
41df7b02 HS |
584 | atomic_dec(&fnic->in_flight); |
585 | /* acquire host lock before returning to SCSI */ | |
586 | spin_lock(lp->host->host_lock); | |
587 | return ret; | |
14eb5d90 | 588 | } else { |
67125b02 HP |
589 | atomic64_inc(&fnic_stats->io_stats.active_ios); |
590 | atomic64_inc(&fnic_stats->io_stats.num_ios); | |
591 | if (atomic64_read(&fnic_stats->io_stats.active_ios) > | |
592 | atomic64_read(&fnic_stats->io_stats.max_active_ios)) | |
593 | atomic64_set(&fnic_stats->io_stats.max_active_ios, | |
594 | atomic64_read(&fnic_stats->io_stats.active_ios)); | |
595 | ||
14eb5d90 HP |
596 | /* REVISIT: Use per IO lock in the final code */ |
597 | CMD_FLAGS(sc) |= FNIC_IO_ISSUED; | |
5df6d737 AJ |
598 | } |
599 | out: | |
4d7007b4 HP |
600 | cmd_trace = ((u64)sc->cmnd[0] << 56 | (u64)sc->cmnd[7] << 40 | |
601 | (u64)sc->cmnd[8] << 32 | (u64)sc->cmnd[2] << 24 | | |
602 | (u64)sc->cmnd[3] << 16 | (u64)sc->cmnd[4] << 8 | | |
603 | sc->cmnd[5]); | |
604 | ||
605 | FNIC_TRACE(fnic_queuecommand, sc->device->host->host_no, | |
e1c9f0cf | 606 | tag, sc, io_req, sg_count, cmd_trace, |
4d7007b4 | 607 | (((u64)CMD_FLAGS(sc) >> 32) | CMD_STATE(sc))); |
41df7b02 HS |
608 | |
609 | /* if only we issued IO, will we have the io lock */ | |
db196935 | 610 | if (io_lock_acquired) |
41df7b02 HS |
611 | spin_unlock_irqrestore(io_lock, flags); |
612 | ||
03298552 | 613 | atomic_dec(&fnic->in_flight); |
5df6d737 AJ |
614 | /* acquire host lock before returning to SCSI */ |
615 | spin_lock(lp->host->host_lock); | |
616 | return ret; | |
617 | } | |
618 | ||
f281233d JG |
619 | DEF_SCSI_QCMD(fnic_queuecommand) |
620 | ||
5df6d737 AJ |
621 | /* |
622 | * fnic_fcpio_fw_reset_cmpl_handler | |
623 | * Routine to handle fw reset completion | |
624 | */ | |
625 | static int fnic_fcpio_fw_reset_cmpl_handler(struct fnic *fnic, | |
626 | struct fcpio_fw_req *desc) | |
627 | { | |
628 | u8 type; | |
629 | u8 hdr_status; | |
630 | struct fcpio_tag tag; | |
631 | int ret = 0; | |
5df6d737 | 632 | unsigned long flags; |
67125b02 | 633 | struct reset_stats *reset_stats = &fnic->fnic_stats.reset_stats; |
5df6d737 AJ |
634 | |
635 | fcpio_header_dec(&desc->hdr, &type, &hdr_status, &tag); | |
636 | ||
67125b02 HP |
637 | atomic64_inc(&reset_stats->fw_reset_completions); |
638 | ||
5df6d737 | 639 | /* Clean up all outstanding io requests */ |
3ba1eeff | 640 | fnic_cleanup_io(fnic); |
5df6d737 | 641 | |
67125b02 HP |
642 | atomic64_set(&fnic->fnic_stats.fw_stats.active_fw_reqs, 0); |
643 | atomic64_set(&fnic->fnic_stats.io_stats.active_ios, 0); | |
1cdf8bc1 | 644 | atomic64_set(&fnic->io_cmpl_skip, 0); |
67125b02 | 645 | |
5df6d737 AJ |
646 | spin_lock_irqsave(&fnic->fnic_lock, flags); |
647 | ||
5df6d737 AJ |
648 | /* fnic should be in FC_TRANS_ETH_MODE */ |
649 | if (fnic->state == FNIC_IN_FC_TRANS_ETH_MODE) { | |
650 | /* Check status of reset completion */ | |
651 | if (!hdr_status) { | |
652 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
653 | "reset cmpl success\n"); | |
654 | /* Ready to send flogi out */ | |
655 | fnic->state = FNIC_IN_ETH_MODE; | |
656 | } else { | |
657 | FNIC_SCSI_DBG(KERN_DEBUG, | |
658 | fnic->lport->host, | |
659 | "fnic fw_reset : failed %s\n", | |
660 | fnic_fcpio_status_to_str(hdr_status)); | |
661 | ||
662 | /* | |
663 | * Unable to change to eth mode, cannot send out flogi | |
664 | * Change state to fc mode, so that subsequent Flogi | |
665 | * requests from libFC will cause more attempts to | |
666 | * reset the firmware. Free the cached flogi | |
667 | */ | |
668 | fnic->state = FNIC_IN_FC_MODE; | |
67125b02 | 669 | atomic64_inc(&reset_stats->fw_reset_failures); |
5df6d737 AJ |
670 | ret = -1; |
671 | } | |
672 | } else { | |
673 | FNIC_SCSI_DBG(KERN_DEBUG, | |
674 | fnic->lport->host, | |
675 | "Unexpected state %s while processing" | |
676 | " reset cmpl\n", fnic_state_to_str(fnic->state)); | |
67125b02 | 677 | atomic64_inc(&reset_stats->fw_reset_failures); |
5df6d737 AJ |
678 | ret = -1; |
679 | } | |
680 | ||
681 | /* Thread removing device blocks till firmware reset is complete */ | |
682 | if (fnic->remove_wait) | |
683 | complete(fnic->remove_wait); | |
684 | ||
685 | /* | |
686 | * If fnic is being removed, or fw reset failed | |
687 | * free the flogi frame. Else, send it out | |
688 | */ | |
689 | if (fnic->remove_wait || ret) { | |
5df6d737 | 690 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); |
78112e55 | 691 | skb_queue_purge(&fnic->tx_queue); |
5df6d737 AJ |
692 | goto reset_cmpl_handler_end; |
693 | } | |
694 | ||
695 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
696 | ||
78112e55 | 697 | fnic_flush_tx(fnic); |
5df6d737 AJ |
698 | |
699 | reset_cmpl_handler_end: | |
03298552 HP |
700 | fnic_clear_state_flags(fnic, FNIC_FLAGS_FWRESET); |
701 | ||
5df6d737 AJ |
702 | return ret; |
703 | } | |
704 | ||
705 | /* | |
706 | * fnic_fcpio_flogi_reg_cmpl_handler | |
707 | * Routine to handle flogi register completion | |
708 | */ | |
709 | static int fnic_fcpio_flogi_reg_cmpl_handler(struct fnic *fnic, | |
710 | struct fcpio_fw_req *desc) | |
711 | { | |
712 | u8 type; | |
713 | u8 hdr_status; | |
714 | struct fcpio_tag tag; | |
715 | int ret = 0; | |
5df6d737 | 716 | unsigned long flags; |
5df6d737 AJ |
717 | |
718 | fcpio_header_dec(&desc->hdr, &type, &hdr_status, &tag); | |
719 | ||
720 | /* Update fnic state based on status of flogi reg completion */ | |
721 | spin_lock_irqsave(&fnic->fnic_lock, flags); | |
722 | ||
5df6d737 AJ |
723 | if (fnic->state == FNIC_IN_ETH_TRANS_FC_MODE) { |
724 | ||
725 | /* Check flogi registration completion status */ | |
726 | if (!hdr_status) { | |
727 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
728 | "flog reg succeeded\n"); | |
729 | fnic->state = FNIC_IN_FC_MODE; | |
730 | } else { | |
731 | FNIC_SCSI_DBG(KERN_DEBUG, | |
732 | fnic->lport->host, | |
733 | "fnic flogi reg :failed %s\n", | |
734 | fnic_fcpio_status_to_str(hdr_status)); | |
735 | fnic->state = FNIC_IN_ETH_MODE; | |
736 | ret = -1; | |
737 | } | |
738 | } else { | |
739 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
740 | "Unexpected fnic state %s while" | |
741 | " processing flogi reg completion\n", | |
742 | fnic_state_to_str(fnic->state)); | |
743 | ret = -1; | |
744 | } | |
745 | ||
78112e55 | 746 | if (!ret) { |
5df6d737 AJ |
747 | if (fnic->stop_rx_link_events) { |
748 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
749 | goto reg_cmpl_handler_end; | |
750 | } | |
5df6d737 AJ |
751 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); |
752 | ||
78112e55 | 753 | fnic_flush_tx(fnic); |
5df6d737 | 754 | queue_work(fnic_event_queue, &fnic->frame_work); |
5df6d737 AJ |
755 | } else { |
756 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
5df6d737 AJ |
757 | } |
758 | ||
759 | reg_cmpl_handler_end: | |
760 | return ret; | |
761 | } | |
762 | ||
763 | static inline int is_ack_index_in_range(struct vnic_wq_copy *wq, | |
764 | u16 request_out) | |
765 | { | |
766 | if (wq->to_clean_index <= wq->to_use_index) { | |
767 | /* out of range, stale request_out index */ | |
768 | if (request_out < wq->to_clean_index || | |
769 | request_out >= wq->to_use_index) | |
770 | return 0; | |
771 | } else { | |
772 | /* out of range, stale request_out index */ | |
773 | if (request_out < wq->to_clean_index && | |
774 | request_out >= wq->to_use_index) | |
775 | return 0; | |
776 | } | |
777 | /* request_out index is in range */ | |
778 | return 1; | |
779 | } | |
780 | ||
781 | ||
782 | /* | |
783 | * Mark that ack received and store the Ack index. If there are multiple | |
784 | * acks received before Tx thread cleans it up, the latest value will be | |
785 | * used which is correct behavior. This state should be in the copy Wq | |
786 | * instead of in the fnic | |
787 | */ | |
788 | static inline void fnic_fcpio_ack_handler(struct fnic *fnic, | |
789 | unsigned int cq_index, | |
790 | struct fcpio_fw_req *desc) | |
791 | { | |
792 | struct vnic_wq_copy *wq; | |
793 | u16 request_out = desc->u.ack.request_out; | |
794 | unsigned long flags; | |
4d7007b4 | 795 | u64 *ox_id_tag = (u64 *)(void *)desc; |
5df6d737 AJ |
796 | |
797 | /* mark the ack state */ | |
798 | wq = &fnic->wq_copy[cq_index - fnic->raw_wq_count - fnic->rq_count]; | |
799 | spin_lock_irqsave(&fnic->wq_copy_lock[0], flags); | |
800 | ||
67125b02 | 801 | fnic->fnic_stats.misc_stats.last_ack_time = jiffies; |
5df6d737 AJ |
802 | if (is_ack_index_in_range(wq, request_out)) { |
803 | fnic->fw_ack_index[0] = request_out; | |
804 | fnic->fw_ack_recd[0] = 1; | |
67125b02 HP |
805 | } else |
806 | atomic64_inc( | |
807 | &fnic->fnic_stats.misc_stats.ack_index_out_of_range); | |
808 | ||
5df6d737 | 809 | spin_unlock_irqrestore(&fnic->wq_copy_lock[0], flags); |
4d7007b4 HP |
810 | FNIC_TRACE(fnic_fcpio_ack_handler, |
811 | fnic->lport->host->host_no, 0, 0, ox_id_tag[2], ox_id_tag[3], | |
812 | ox_id_tag[4], ox_id_tag[5]); | |
5df6d737 AJ |
813 | } |
814 | ||
815 | /* | |
816 | * fnic_fcpio_icmnd_cmpl_handler | |
817 | * Routine to handle icmnd completions | |
818 | */ | |
819 | static void fnic_fcpio_icmnd_cmpl_handler(struct fnic *fnic, | |
820 | struct fcpio_fw_req *desc) | |
821 | { | |
822 | u8 type; | |
823 | u8 hdr_status; | |
824 | struct fcpio_tag tag; | |
825 | u32 id; | |
826 | u64 xfer_len = 0; | |
827 | struct fcpio_icmnd_cmpl *icmnd_cmpl; | |
828 | struct fnic_io_req *io_req; | |
829 | struct scsi_cmnd *sc; | |
67125b02 | 830 | struct fnic_stats *fnic_stats = &fnic->fnic_stats; |
5df6d737 AJ |
831 | unsigned long flags; |
832 | spinlock_t *io_lock; | |
4d7007b4 | 833 | u64 cmd_trace; |
14eb5d90 | 834 | unsigned long start_time; |
445d2960 | 835 | unsigned long io_duration_time; |
5df6d737 AJ |
836 | |
837 | /* Decode the cmpl description to get the io_req id */ | |
838 | fcpio_header_dec(&desc->hdr, &type, &hdr_status, &tag); | |
839 | fcpio_tag_id_dec(&tag, &id); | |
14eb5d90 | 840 | icmnd_cmpl = &desc->u.icmnd_cmpl; |
5df6d737 | 841 | |
fc85799e | 842 | if (id >= fnic->fnic_max_tag_id) { |
03298552 HP |
843 | shost_printk(KERN_ERR, fnic->lport->host, |
844 | "Tag out of range tag %x hdr status = %s\n", | |
845 | id, fnic_fcpio_status_to_str(hdr_status)); | |
5df6d737 | 846 | return; |
03298552 | 847 | } |
5df6d737 AJ |
848 | |
849 | sc = scsi_host_find_tag(fnic->lport->host, id); | |
850 | WARN_ON_ONCE(!sc); | |
14eb5d90 | 851 | if (!sc) { |
67125b02 | 852 | atomic64_inc(&fnic_stats->io_stats.sc_null); |
14eb5d90 HP |
853 | shost_printk(KERN_ERR, fnic->lport->host, |
854 | "icmnd_cmpl sc is null - " | |
855 | "hdr status = %s tag = 0x%x desc = 0x%p\n", | |
856 | fnic_fcpio_status_to_str(hdr_status), id, desc); | |
4d7007b4 HP |
857 | FNIC_TRACE(fnic_fcpio_icmnd_cmpl_handler, |
858 | fnic->lport->host->host_no, id, | |
859 | ((u64)icmnd_cmpl->_resvd0[1] << 16 | | |
860 | (u64)icmnd_cmpl->_resvd0[0]), | |
861 | ((u64)hdr_status << 16 | | |
862 | (u64)icmnd_cmpl->scsi_status << 8 | | |
863 | (u64)icmnd_cmpl->flags), desc, | |
864 | (u64)icmnd_cmpl->residual, 0); | |
5df6d737 | 865 | return; |
14eb5d90 | 866 | } |
5df6d737 AJ |
867 | |
868 | io_lock = fnic_io_lock_hash(fnic, sc); | |
869 | spin_lock_irqsave(io_lock, flags); | |
870 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
871 | WARN_ON_ONCE(!io_req); | |
872 | if (!io_req) { | |
67125b02 | 873 | atomic64_inc(&fnic_stats->io_stats.ioreq_null); |
14eb5d90 | 874 | CMD_FLAGS(sc) |= FNIC_IO_REQ_NULL; |
5df6d737 | 875 | spin_unlock_irqrestore(io_lock, flags); |
14eb5d90 HP |
876 | shost_printk(KERN_ERR, fnic->lport->host, |
877 | "icmnd_cmpl io_req is null - " | |
878 | "hdr status = %s tag = 0x%x sc 0x%p\n", | |
879 | fnic_fcpio_status_to_str(hdr_status), id, sc); | |
5df6d737 AJ |
880 | return; |
881 | } | |
14eb5d90 | 882 | start_time = io_req->start_time; |
5df6d737 AJ |
883 | |
884 | /* firmware completed the io */ | |
885 | io_req->io_completed = 1; | |
886 | ||
887 | /* | |
888 | * if SCSI-ML has already issued abort on this command, | |
b9202b4a | 889 | * set completion of the IO. The abts path will clean it up |
5df6d737 AJ |
890 | */ |
891 | if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) { | |
b9202b4a SK |
892 | |
893 | /* | |
894 | * set the FNIC_IO_DONE so that this doesn't get | |
895 | * flagged as 'out of order' if it was not aborted | |
896 | */ | |
897 | CMD_FLAGS(sc) |= FNIC_IO_DONE; | |
14eb5d90 | 898 | CMD_FLAGS(sc) |= FNIC_IO_ABTS_PENDING; |
b9202b4a SK |
899 | spin_unlock_irqrestore(io_lock, flags); |
900 | if(FCPIO_ABORTED == hdr_status) | |
14eb5d90 | 901 | CMD_FLAGS(sc) |= FNIC_IO_ABORTED; |
b9202b4a SK |
902 | |
903 | FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host, | |
904 | "icmnd_cmpl abts pending " | |
f280c77d | 905 | "hdr status = %s tag = 0x%x sc = 0x%p " |
b9202b4a SK |
906 | "scsi_status = %x residual = %d\n", |
907 | fnic_fcpio_status_to_str(hdr_status), | |
908 | id, sc, | |
909 | icmnd_cmpl->scsi_status, | |
910 | icmnd_cmpl->residual); | |
5df6d737 AJ |
911 | return; |
912 | } | |
913 | ||
914 | /* Mark the IO as complete */ | |
915 | CMD_STATE(sc) = FNIC_IOREQ_CMD_COMPLETE; | |
916 | ||
917 | icmnd_cmpl = &desc->u.icmnd_cmpl; | |
918 | ||
919 | switch (hdr_status) { | |
920 | case FCPIO_SUCCESS: | |
921 | sc->result = (DID_OK << 16) | icmnd_cmpl->scsi_status; | |
922 | xfer_len = scsi_bufflen(sc); | |
5df6d737 | 923 | |
74ae6d6a | 924 | if (icmnd_cmpl->flags & FCPIO_ICMND_CMPL_RESID_UNDER) { |
5df6d737 | 925 | xfer_len -= icmnd_cmpl->residual; |
74ae6d6a KTK |
926 | scsi_set_resid(sc, icmnd_cmpl->residual); |
927 | } | |
5df6d737 | 928 | |
39fcbbc0 SK |
929 | if (icmnd_cmpl->scsi_status == SAM_STAT_CHECK_CONDITION) |
930 | atomic64_inc(&fnic_stats->misc_stats.check_condition); | |
931 | ||
67125b02 HP |
932 | if (icmnd_cmpl->scsi_status == SAM_STAT_TASK_SET_FULL) |
933 | atomic64_inc(&fnic_stats->misc_stats.queue_fulls); | |
5df6d737 AJ |
934 | break; |
935 | ||
936 | case FCPIO_TIMEOUT: /* request was timed out */ | |
67125b02 | 937 | atomic64_inc(&fnic_stats->misc_stats.fcpio_timeout); |
5df6d737 AJ |
938 | sc->result = (DID_TIME_OUT << 16) | icmnd_cmpl->scsi_status; |
939 | break; | |
940 | ||
941 | case FCPIO_ABORTED: /* request was aborted */ | |
67125b02 | 942 | atomic64_inc(&fnic_stats->misc_stats.fcpio_aborted); |
5df6d737 AJ |
943 | sc->result = (DID_ERROR << 16) | icmnd_cmpl->scsi_status; |
944 | break; | |
945 | ||
946 | case FCPIO_DATA_CNT_MISMATCH: /* recv/sent more/less data than exp. */ | |
67125b02 | 947 | atomic64_inc(&fnic_stats->misc_stats.data_count_mismatch); |
5df6d737 AJ |
948 | scsi_set_resid(sc, icmnd_cmpl->residual); |
949 | sc->result = (DID_ERROR << 16) | icmnd_cmpl->scsi_status; | |
950 | break; | |
951 | ||
952 | case FCPIO_OUT_OF_RESOURCE: /* out of resources to complete request */ | |
67125b02 | 953 | atomic64_inc(&fnic_stats->fw_stats.fw_out_of_resources); |
5df6d737 AJ |
954 | sc->result = (DID_REQUEUE << 16) | icmnd_cmpl->scsi_status; |
955 | break; | |
67125b02 | 956 | |
5df6d737 | 957 | case FCPIO_IO_NOT_FOUND: /* requested I/O was not found */ |
67125b02 HP |
958 | atomic64_inc(&fnic_stats->io_stats.io_not_found); |
959 | sc->result = (DID_ERROR << 16) | icmnd_cmpl->scsi_status; | |
960 | break; | |
961 | ||
5df6d737 | 962 | case FCPIO_SGL_INVALID: /* request was aborted due to sgl error */ |
67125b02 HP |
963 | atomic64_inc(&fnic_stats->misc_stats.sgl_invalid); |
964 | sc->result = (DID_ERROR << 16) | icmnd_cmpl->scsi_status; | |
965 | break; | |
966 | ||
5df6d737 | 967 | case FCPIO_FW_ERR: /* request was terminated due fw error */ |
67125b02 HP |
968 | atomic64_inc(&fnic_stats->fw_stats.io_fw_errs); |
969 | sc->result = (DID_ERROR << 16) | icmnd_cmpl->scsi_status; | |
970 | break; | |
971 | ||
972 | case FCPIO_MSS_INVALID: /* request was aborted due to mss error */ | |
973 | atomic64_inc(&fnic_stats->misc_stats.mss_invalid); | |
974 | sc->result = (DID_ERROR << 16) | icmnd_cmpl->scsi_status; | |
975 | break; | |
976 | ||
977 | case FCPIO_INVALID_HEADER: /* header contains invalid data */ | |
978 | case FCPIO_INVALID_PARAM: /* some parameter in request invalid */ | |
979 | case FCPIO_REQ_NOT_SUPPORTED:/* request type is not supported */ | |
5df6d737 | 980 | default: |
5df6d737 AJ |
981 | sc->result = (DID_ERROR << 16) | icmnd_cmpl->scsi_status; |
982 | break; | |
983 | } | |
984 | ||
985 | /* Break link with the SCSI command */ | |
986 | CMD_SP(sc) = NULL; | |
14eb5d90 | 987 | CMD_FLAGS(sc) |= FNIC_IO_DONE; |
5df6d737 AJ |
988 | |
989 | spin_unlock_irqrestore(io_lock, flags); | |
990 | ||
14cee5b4 ML |
991 | if (hdr_status != FCPIO_SUCCESS) { |
992 | atomic64_inc(&fnic_stats->io_stats.io_failures); | |
993 | shost_printk(KERN_ERR, fnic->lport->host, "hdr status = %s\n", | |
994 | fnic_fcpio_status_to_str(hdr_status)); | |
995 | } | |
996 | ||
5df6d737 AJ |
997 | fnic_release_ioreq_buf(fnic, io_req, sc); |
998 | ||
999 | mempool_free(io_req, fnic->io_req_pool); | |
1000 | ||
4d7007b4 HP |
1001 | cmd_trace = ((u64)hdr_status << 56) | |
1002 | (u64)icmnd_cmpl->scsi_status << 48 | | |
1003 | (u64)icmnd_cmpl->flags << 40 | (u64)sc->cmnd[0] << 32 | | |
1004 | (u64)sc->cmnd[2] << 24 | (u64)sc->cmnd[3] << 16 | | |
1005 | (u64)sc->cmnd[4] << 8 | sc->cmnd[5]; | |
1006 | ||
1007 | FNIC_TRACE(fnic_fcpio_icmnd_cmpl_handler, | |
1008 | sc->device->host->host_no, id, sc, | |
1009 | ((u64)icmnd_cmpl->_resvd0[1] << 56 | | |
1010 | (u64)icmnd_cmpl->_resvd0[0] << 48 | | |
1011 | jiffies_to_msecs(jiffies - start_time)), | |
1012 | desc, cmd_trace, | |
1013 | (((u64)CMD_FLAGS(sc) << 32) | CMD_STATE(sc))); | |
1014 | ||
5df6d737 AJ |
1015 | if (sc->sc_data_direction == DMA_FROM_DEVICE) { |
1016 | fnic->lport->host_stats.fcp_input_requests++; | |
1017 | fnic->fcp_input_bytes += xfer_len; | |
1018 | } else if (sc->sc_data_direction == DMA_TO_DEVICE) { | |
1019 | fnic->lport->host_stats.fcp_output_requests++; | |
1020 | fnic->fcp_output_bytes += xfer_len; | |
1021 | } else | |
1022 | fnic->lport->host_stats.fcp_control_requests++; | |
1023 | ||
67125b02 HP |
1024 | atomic64_dec(&fnic_stats->io_stats.active_ios); |
1025 | if (atomic64_read(&fnic->io_cmpl_skip)) | |
1026 | atomic64_dec(&fnic->io_cmpl_skip); | |
1027 | else | |
1028 | atomic64_inc(&fnic_stats->io_stats.io_completions); | |
1029 | ||
445d2960 | 1030 | |
ec990306 PB |
1031 | io_duration_time = jiffies_to_msecs(jiffies) - |
1032 | jiffies_to_msecs(start_time); | |
445d2960 SK |
1033 | |
1034 | if(io_duration_time <= 10) | |
1035 | atomic64_inc(&fnic_stats->io_stats.io_btw_0_to_10_msec); | |
1036 | else if(io_duration_time <= 100) | |
1037 | atomic64_inc(&fnic_stats->io_stats.io_btw_10_to_100_msec); | |
1038 | else if(io_duration_time <= 500) | |
1039 | atomic64_inc(&fnic_stats->io_stats.io_btw_100_to_500_msec); | |
1040 | else if(io_duration_time <= 5000) | |
1041 | atomic64_inc(&fnic_stats->io_stats.io_btw_500_to_5000_msec); | |
1042 | else if(io_duration_time <= 10000) | |
1043 | atomic64_inc(&fnic_stats->io_stats.io_btw_5000_to_10000_msec); | |
1044 | else if(io_duration_time <= 30000) | |
1045 | atomic64_inc(&fnic_stats->io_stats.io_btw_10000_to_30000_msec); | |
1046 | else { | |
1047 | atomic64_inc(&fnic_stats->io_stats.io_greater_than_30000_msec); | |
1048 | ||
1049 | if(io_duration_time > atomic64_read(&fnic_stats->io_stats.current_max_io_time)) | |
1050 | atomic64_set(&fnic_stats->io_stats.current_max_io_time, io_duration_time); | |
1051 | } | |
1052 | ||
5df6d737 AJ |
1053 | /* Call SCSI completion function to complete the IO */ |
1054 | if (sc->scsi_done) | |
1055 | sc->scsi_done(sc); | |
5df6d737 AJ |
1056 | } |
1057 | ||
1058 | /* fnic_fcpio_itmf_cmpl_handler | |
1059 | * Routine to handle itmf completions | |
1060 | */ | |
1061 | static void fnic_fcpio_itmf_cmpl_handler(struct fnic *fnic, | |
1062 | struct fcpio_fw_req *desc) | |
1063 | { | |
1064 | u8 type; | |
1065 | u8 hdr_status; | |
1066 | struct fcpio_tag tag; | |
1067 | u32 id; | |
1068 | struct scsi_cmnd *sc; | |
1069 | struct fnic_io_req *io_req; | |
67125b02 HP |
1070 | struct fnic_stats *fnic_stats = &fnic->fnic_stats; |
1071 | struct abort_stats *abts_stats = &fnic->fnic_stats.abts_stats; | |
1072 | struct terminate_stats *term_stats = &fnic->fnic_stats.term_stats; | |
1073 | struct misc_stats *misc_stats = &fnic->fnic_stats.misc_stats; | |
5df6d737 AJ |
1074 | unsigned long flags; |
1075 | spinlock_t *io_lock; | |
14eb5d90 | 1076 | unsigned long start_time; |
5df6d737 AJ |
1077 | |
1078 | fcpio_header_dec(&desc->hdr, &type, &hdr_status, &tag); | |
1079 | fcpio_tag_id_dec(&tag, &id); | |
1080 | ||
fc85799e | 1081 | if ((id & FNIC_TAG_MASK) >= fnic->fnic_max_tag_id) { |
03298552 HP |
1082 | shost_printk(KERN_ERR, fnic->lport->host, |
1083 | "Tag out of range tag %x hdr status = %s\n", | |
1084 | id, fnic_fcpio_status_to_str(hdr_status)); | |
5df6d737 | 1085 | return; |
03298552 | 1086 | } |
5df6d737 AJ |
1087 | |
1088 | sc = scsi_host_find_tag(fnic->lport->host, id & FNIC_TAG_MASK); | |
1089 | WARN_ON_ONCE(!sc); | |
14eb5d90 | 1090 | if (!sc) { |
67125b02 | 1091 | atomic64_inc(&fnic_stats->io_stats.sc_null); |
14eb5d90 HP |
1092 | shost_printk(KERN_ERR, fnic->lport->host, |
1093 | "itmf_cmpl sc is null - hdr status = %s tag = 0x%x\n", | |
1094 | fnic_fcpio_status_to_str(hdr_status), id); | |
5df6d737 | 1095 | return; |
14eb5d90 | 1096 | } |
5df6d737 AJ |
1097 | io_lock = fnic_io_lock_hash(fnic, sc); |
1098 | spin_lock_irqsave(io_lock, flags); | |
1099 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
1100 | WARN_ON_ONCE(!io_req); | |
1101 | if (!io_req) { | |
67125b02 | 1102 | atomic64_inc(&fnic_stats->io_stats.ioreq_null); |
5df6d737 | 1103 | spin_unlock_irqrestore(io_lock, flags); |
14eb5d90 HP |
1104 | CMD_FLAGS(sc) |= FNIC_IO_ABT_TERM_REQ_NULL; |
1105 | shost_printk(KERN_ERR, fnic->lport->host, | |
1106 | "itmf_cmpl io_req is null - " | |
1107 | "hdr status = %s tag = 0x%x sc 0x%p\n", | |
1108 | fnic_fcpio_status_to_str(hdr_status), id, sc); | |
5df6d737 AJ |
1109 | return; |
1110 | } | |
14eb5d90 | 1111 | start_time = io_req->start_time; |
5df6d737 | 1112 | |
03298552 HP |
1113 | if ((id & FNIC_TAG_ABORT) && (id & FNIC_TAG_DEV_RST)) { |
1114 | /* Abort and terminate completion of device reset req */ | |
1115 | /* REVISIT : Add asserts about various flags */ | |
1116 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
1117 | "dev reset abts cmpl recd. id %x status %s\n", | |
1118 | id, fnic_fcpio_status_to_str(hdr_status)); | |
1119 | CMD_STATE(sc) = FNIC_IOREQ_ABTS_COMPLETE; | |
1120 | CMD_ABTS_STATUS(sc) = hdr_status; | |
1121 | CMD_FLAGS(sc) |= FNIC_DEV_RST_DONE; | |
1122 | if (io_req->abts_done) | |
1123 | complete(io_req->abts_done); | |
1124 | spin_unlock_irqrestore(io_lock, flags); | |
1125 | } else if (id & FNIC_TAG_ABORT) { | |
5df6d737 | 1126 | /* Completion of abort cmd */ |
67125b02 HP |
1127 | switch (hdr_status) { |
1128 | case FCPIO_SUCCESS: | |
1129 | break; | |
1130 | case FCPIO_TIMEOUT: | |
1131 | if (CMD_FLAGS(sc) & FNIC_IO_ABTS_ISSUED) | |
1132 | atomic64_inc(&abts_stats->abort_fw_timeouts); | |
1133 | else | |
1134 | atomic64_inc( | |
1135 | &term_stats->terminate_fw_timeouts); | |
1136 | break; | |
691a837c SK |
1137 | case FCPIO_ITMF_REJECTED: |
1138 | FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host, | |
1139 | "abort reject recd. id %d\n", | |
1140 | (int)(id & FNIC_TAG_MASK)); | |
1141 | break; | |
67125b02 HP |
1142 | case FCPIO_IO_NOT_FOUND: |
1143 | if (CMD_FLAGS(sc) & FNIC_IO_ABTS_ISSUED) | |
1144 | atomic64_inc(&abts_stats->abort_io_not_found); | |
1145 | else | |
1146 | atomic64_inc( | |
1147 | &term_stats->terminate_io_not_found); | |
1148 | break; | |
1149 | default: | |
1150 | if (CMD_FLAGS(sc) & FNIC_IO_ABTS_ISSUED) | |
1151 | atomic64_inc(&abts_stats->abort_failures); | |
1152 | else | |
1153 | atomic64_inc( | |
1154 | &term_stats->terminate_failures); | |
1155 | break; | |
1156 | } | |
5df6d737 AJ |
1157 | if (CMD_STATE(sc) != FNIC_IOREQ_ABTS_PENDING) { |
1158 | /* This is a late completion. Ignore it */ | |
1159 | spin_unlock_irqrestore(io_lock, flags); | |
1160 | return; | |
1161 | } | |
691a837c | 1162 | |
14eb5d90 | 1163 | CMD_FLAGS(sc) |= FNIC_IO_ABT_TERM_DONE; |
ccc6d704 | 1164 | CMD_ABTS_STATUS(sc) = hdr_status; |
67125b02 | 1165 | |
691a837c SK |
1166 | /* If the status is IO not found consider it as success */ |
1167 | if (hdr_status == FCPIO_IO_NOT_FOUND) | |
1168 | CMD_ABTS_STATUS(sc) = FCPIO_SUCCESS; | |
691a837c | 1169 | |
67125b02 HP |
1170 | if (!(CMD_FLAGS(sc) & (FNIC_IO_ABORTED | FNIC_IO_DONE))) |
1171 | atomic64_inc(&misc_stats->no_icmnd_itmf_cmpls); | |
1172 | ||
5df6d737 AJ |
1173 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
1174 | "abts cmpl recd. id %d status %s\n", | |
1175 | (int)(id & FNIC_TAG_MASK), | |
1176 | fnic_fcpio_status_to_str(hdr_status)); | |
1177 | ||
1178 | /* | |
1179 | * If scsi_eh thread is blocked waiting for abts to complete, | |
1180 | * signal completion to it. IO will be cleaned in the thread | |
1181 | * else clean it in this context | |
1182 | */ | |
1183 | if (io_req->abts_done) { | |
1184 | complete(io_req->abts_done); | |
1185 | spin_unlock_irqrestore(io_lock, flags); | |
1186 | } else { | |
1187 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
1188 | "abts cmpl, completing IO\n"); | |
1189 | CMD_SP(sc) = NULL; | |
1190 | sc->result = (DID_ERROR << 16); | |
1191 | ||
1192 | spin_unlock_irqrestore(io_lock, flags); | |
1193 | ||
1194 | fnic_release_ioreq_buf(fnic, io_req, sc); | |
1195 | mempool_free(io_req, fnic->io_req_pool); | |
4d7007b4 HP |
1196 | if (sc->scsi_done) { |
1197 | FNIC_TRACE(fnic_fcpio_itmf_cmpl_handler, | |
1198 | sc->device->host->host_no, id, | |
1199 | sc, | |
1200 | jiffies_to_msecs(jiffies - start_time), | |
1201 | desc, | |
1202 | (((u64)hdr_status << 40) | | |
1203 | (u64)sc->cmnd[0] << 32 | | |
1204 | (u64)sc->cmnd[2] << 24 | | |
1205 | (u64)sc->cmnd[3] << 16 | | |
1206 | (u64)sc->cmnd[4] << 8 | sc->cmnd[5]), | |
1207 | (((u64)CMD_FLAGS(sc) << 32) | | |
1208 | CMD_STATE(sc))); | |
5df6d737 | 1209 | sc->scsi_done(sc); |
7ef539c8 SK |
1210 | atomic64_dec(&fnic_stats->io_stats.active_ios); |
1211 | if (atomic64_read(&fnic->io_cmpl_skip)) | |
1212 | atomic64_dec(&fnic->io_cmpl_skip); | |
1213 | else | |
1214 | atomic64_inc(&fnic_stats->io_stats.io_completions); | |
4d7007b4 | 1215 | } |
5df6d737 AJ |
1216 | } |
1217 | ||
1218 | } else if (id & FNIC_TAG_DEV_RST) { | |
1219 | /* Completion of device reset */ | |
1220 | CMD_LR_STATUS(sc) = hdr_status; | |
03298552 HP |
1221 | if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) { |
1222 | spin_unlock_irqrestore(io_lock, flags); | |
14eb5d90 | 1223 | CMD_FLAGS(sc) |= FNIC_DEV_RST_ABTS_PENDING; |
4d7007b4 HP |
1224 | FNIC_TRACE(fnic_fcpio_itmf_cmpl_handler, |
1225 | sc->device->host->host_no, id, sc, | |
1226 | jiffies_to_msecs(jiffies - start_time), | |
1227 | desc, 0, | |
1228 | (((u64)CMD_FLAGS(sc) << 32) | CMD_STATE(sc))); | |
03298552 HP |
1229 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
1230 | "Terminate pending " | |
1231 | "dev reset cmpl recd. id %d status %s\n", | |
1232 | (int)(id & FNIC_TAG_MASK), | |
1233 | fnic_fcpio_status_to_str(hdr_status)); | |
1234 | return; | |
1235 | } | |
1236 | if (CMD_FLAGS(sc) & FNIC_DEV_RST_TIMED_OUT) { | |
1237 | /* Need to wait for terminate completion */ | |
1238 | spin_unlock_irqrestore(io_lock, flags); | |
4d7007b4 HP |
1239 | FNIC_TRACE(fnic_fcpio_itmf_cmpl_handler, |
1240 | sc->device->host->host_no, id, sc, | |
1241 | jiffies_to_msecs(jiffies - start_time), | |
1242 | desc, 0, | |
1243 | (((u64)CMD_FLAGS(sc) << 32) | CMD_STATE(sc))); | |
03298552 HP |
1244 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
1245 | "dev reset cmpl recd after time out. " | |
1246 | "id %d status %s\n", | |
1247 | (int)(id & FNIC_TAG_MASK), | |
1248 | fnic_fcpio_status_to_str(hdr_status)); | |
1249 | return; | |
1250 | } | |
5df6d737 | 1251 | CMD_STATE(sc) = FNIC_IOREQ_CMD_COMPLETE; |
03298552 | 1252 | CMD_FLAGS(sc) |= FNIC_DEV_RST_DONE; |
5df6d737 AJ |
1253 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
1254 | "dev reset cmpl recd. id %d status %s\n", | |
1255 | (int)(id & FNIC_TAG_MASK), | |
1256 | fnic_fcpio_status_to_str(hdr_status)); | |
1257 | if (io_req->dr_done) | |
1258 | complete(io_req->dr_done); | |
1259 | spin_unlock_irqrestore(io_lock, flags); | |
1260 | ||
1261 | } else { | |
1262 | shost_printk(KERN_ERR, fnic->lport->host, | |
1263 | "Unexpected itmf io state %s tag %x\n", | |
1264 | fnic_ioreq_state_to_str(CMD_STATE(sc)), id); | |
1265 | spin_unlock_irqrestore(io_lock, flags); | |
1266 | } | |
1267 | ||
1268 | } | |
1269 | ||
1270 | /* | |
1271 | * fnic_fcpio_cmpl_handler | |
1272 | * Routine to service the cq for wq_copy | |
1273 | */ | |
1274 | static int fnic_fcpio_cmpl_handler(struct vnic_dev *vdev, | |
1275 | unsigned int cq_index, | |
1276 | struct fcpio_fw_req *desc) | |
1277 | { | |
1278 | struct fnic *fnic = vnic_dev_priv(vdev); | |
5df6d737 | 1279 | |
67125b02 HP |
1280 | switch (desc->hdr.type) { |
1281 | case FCPIO_ICMND_CMPL: /* fw completed a command */ | |
1282 | case FCPIO_ITMF_CMPL: /* fw completed itmf (abort cmd, lun reset)*/ | |
1283 | case FCPIO_FLOGI_REG_CMPL: /* fw completed flogi_reg */ | |
1284 | case FCPIO_FLOGI_FIP_REG_CMPL: /* fw completed flogi_fip_reg */ | |
1285 | case FCPIO_RESET_CMPL: /* fw completed reset */ | |
1286 | atomic64_dec(&fnic->fnic_stats.fw_stats.active_fw_reqs); | |
1287 | break; | |
1288 | default: | |
1289 | break; | |
1290 | } | |
1291 | ||
5df6d737 AJ |
1292 | switch (desc->hdr.type) { |
1293 | case FCPIO_ACK: /* fw copied copy wq desc to its queue */ | |
1294 | fnic_fcpio_ack_handler(fnic, cq_index, desc); | |
1295 | break; | |
1296 | ||
1297 | case FCPIO_ICMND_CMPL: /* fw completed a command */ | |
1298 | fnic_fcpio_icmnd_cmpl_handler(fnic, desc); | |
1299 | break; | |
1300 | ||
1301 | case FCPIO_ITMF_CMPL: /* fw completed itmf (abort cmd, lun reset)*/ | |
1302 | fnic_fcpio_itmf_cmpl_handler(fnic, desc); | |
1303 | break; | |
1304 | ||
1305 | case FCPIO_FLOGI_REG_CMPL: /* fw completed flogi_reg */ | |
78112e55 | 1306 | case FCPIO_FLOGI_FIP_REG_CMPL: /* fw completed flogi_fip_reg */ |
03298552 | 1307 | fnic_fcpio_flogi_reg_cmpl_handler(fnic, desc); |
5df6d737 AJ |
1308 | break; |
1309 | ||
1310 | case FCPIO_RESET_CMPL: /* fw completed reset */ | |
03298552 | 1311 | fnic_fcpio_fw_reset_cmpl_handler(fnic, desc); |
5df6d737 AJ |
1312 | break; |
1313 | ||
1314 | default: | |
1315 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
1316 | "firmware completion type %d\n", | |
1317 | desc->hdr.type); | |
1318 | break; | |
1319 | } | |
1320 | ||
03298552 | 1321 | return 0; |
5df6d737 AJ |
1322 | } |
1323 | ||
1324 | /* | |
1325 | * fnic_wq_copy_cmpl_handler | |
1326 | * Routine to process wq copy | |
1327 | */ | |
1328 | int fnic_wq_copy_cmpl_handler(struct fnic *fnic, int copy_work_to_do) | |
1329 | { | |
1330 | unsigned int wq_work_done = 0; | |
1331 | unsigned int i, cq_index; | |
1332 | unsigned int cur_work_done; | |
3567dca1 SK |
1333 | struct misc_stats *misc_stats = &fnic->fnic_stats.misc_stats; |
1334 | u64 start_jiffies = 0; | |
1335 | u64 end_jiffies = 0; | |
1336 | u64 delta_jiffies = 0; | |
1337 | u64 delta_ms = 0; | |
5df6d737 AJ |
1338 | |
1339 | for (i = 0; i < fnic->wq_copy_count; i++) { | |
1340 | cq_index = i + fnic->raw_wq_count + fnic->rq_count; | |
3567dca1 SK |
1341 | |
1342 | start_jiffies = jiffies; | |
5df6d737 AJ |
1343 | cur_work_done = vnic_cq_copy_service(&fnic->cq[cq_index], |
1344 | fnic_fcpio_cmpl_handler, | |
1345 | copy_work_to_do); | |
3567dca1 SK |
1346 | end_jiffies = jiffies; |
1347 | ||
5df6d737 | 1348 | wq_work_done += cur_work_done; |
3567dca1 SK |
1349 | delta_jiffies = end_jiffies - start_jiffies; |
1350 | if (delta_jiffies > | |
1351 | (u64) atomic64_read(&misc_stats->max_isr_jiffies)) { | |
1352 | atomic64_set(&misc_stats->max_isr_jiffies, | |
1353 | delta_jiffies); | |
1354 | delta_ms = jiffies_to_msecs(delta_jiffies); | |
1355 | atomic64_set(&misc_stats->max_isr_time_ms, delta_ms); | |
1356 | atomic64_set(&misc_stats->corr_work_done, | |
1357 | cur_work_done); | |
1358 | } | |
5df6d737 AJ |
1359 | } |
1360 | return wq_work_done; | |
1361 | } | |
1362 | ||
35ffbb60 HR |
1363 | static bool fnic_cleanup_io_iter(struct scsi_cmnd *sc, void *data, |
1364 | bool reserved) | |
5df6d737 | 1365 | { |
e1c9f0cf | 1366 | const int tag = scsi_cmd_to_rq(sc)->tag; |
35ffbb60 | 1367 | struct fnic *fnic = data; |
5df6d737 AJ |
1368 | struct fnic_io_req *io_req; |
1369 | unsigned long flags = 0; | |
5df6d737 | 1370 | spinlock_t *io_lock; |
14eb5d90 | 1371 | unsigned long start_time = 0; |
67125b02 | 1372 | struct fnic_stats *fnic_stats = &fnic->fnic_stats; |
5df6d737 | 1373 | |
e1c9f0cf | 1374 | io_lock = fnic_io_lock_tag(fnic, tag); |
35ffbb60 | 1375 | spin_lock_irqsave(io_lock, flags); |
5df6d737 | 1376 | |
35ffbb60 HR |
1377 | io_req = (struct fnic_io_req *)CMD_SP(sc); |
1378 | if ((CMD_FLAGS(sc) & FNIC_DEVICE_RESET) && | |
1379 | !(CMD_FLAGS(sc) & FNIC_DEV_RST_DONE)) { | |
5df6d737 | 1380 | /* |
35ffbb60 HR |
1381 | * We will be here only when FW completes reset |
1382 | * without sending completions for outstanding ios. | |
5df6d737 | 1383 | */ |
35ffbb60 HR |
1384 | CMD_FLAGS(sc) |= FNIC_DEV_RST_DONE; |
1385 | if (io_req && io_req->dr_done) | |
1386 | complete(io_req->dr_done); | |
1387 | else if (io_req && io_req->abts_done) | |
1388 | complete(io_req->abts_done); | |
1389 | spin_unlock_irqrestore(io_lock, flags); | |
1390 | return true; | |
1391 | } else if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) { | |
1392 | spin_unlock_irqrestore(io_lock, flags); | |
1393 | return true; | |
1394 | } | |
1395 | if (!io_req) { | |
1396 | spin_unlock_irqrestore(io_lock, flags); | |
1397 | goto cleanup_scsi_cmd; | |
1398 | } | |
5df6d737 | 1399 | |
35ffbb60 | 1400 | CMD_SP(sc) = NULL; |
5df6d737 | 1401 | |
35ffbb60 | 1402 | spin_unlock_irqrestore(io_lock, flags); |
67125b02 | 1403 | |
35ffbb60 HR |
1404 | /* |
1405 | * If there is a scsi_cmnd associated with this io_req, then | |
1406 | * free the corresponding state | |
1407 | */ | |
1408 | start_time = io_req->start_time; | |
1409 | fnic_release_ioreq_buf(fnic, io_req, sc); | |
1410 | mempool_free(io_req, fnic->io_req_pool); | |
e8bfe3e7 | 1411 | |
35ffbb60 HR |
1412 | cleanup_scsi_cmd: |
1413 | sc->result = DID_TRANSPORT_DISRUPTED << 16; | |
1414 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
1415 | "fnic_cleanup_io: tag:0x%x : sc:0x%p duration = %lu DID_TRANSPORT_DISRUPTED\n", | |
e1c9f0cf | 1416 | tag, sc, jiffies - start_time); |
4d7007b4 | 1417 | |
35ffbb60 HR |
1418 | if (atomic64_read(&fnic->io_cmpl_skip)) |
1419 | atomic64_dec(&fnic->io_cmpl_skip); | |
1420 | else | |
1421 | atomic64_inc(&fnic_stats->io_stats.io_completions); | |
1422 | ||
1423 | /* Complete the command to SCSI */ | |
1424 | if (sc->scsi_done) { | |
1425 | if (!(CMD_FLAGS(sc) & FNIC_IO_ISSUED)) | |
1426 | shost_printk(KERN_ERR, fnic->lport->host, | |
1427 | "Calling done for IO not issued to fw: tag:0x%x sc:0x%p\n", | |
e1c9f0cf | 1428 | tag, sc); |
35ffbb60 HR |
1429 | |
1430 | FNIC_TRACE(fnic_cleanup_io, | |
e1c9f0cf | 1431 | sc->device->host->host_no, tag, sc, |
35ffbb60 HR |
1432 | jiffies_to_msecs(jiffies - start_time), |
1433 | 0, ((u64)sc->cmnd[0] << 32 | | |
1434 | (u64)sc->cmnd[2] << 24 | | |
1435 | (u64)sc->cmnd[3] << 16 | | |
1436 | (u64)sc->cmnd[4] << 8 | sc->cmnd[5]), | |
1437 | (((u64)CMD_FLAGS(sc) << 32) | CMD_STATE(sc))); | |
1438 | ||
1439 | sc->scsi_done(sc); | |
5df6d737 | 1440 | } |
35ffbb60 HR |
1441 | return true; |
1442 | } | |
1443 | ||
1444 | static void fnic_cleanup_io(struct fnic *fnic) | |
1445 | { | |
1446 | scsi_host_busy_iter(fnic->lport->host, | |
1447 | fnic_cleanup_io_iter, fnic); | |
5df6d737 AJ |
1448 | } |
1449 | ||
1450 | void fnic_wq_copy_cleanup_handler(struct vnic_wq_copy *wq, | |
1451 | struct fcpio_host_req *desc) | |
1452 | { | |
1453 | u32 id; | |
1454 | struct fnic *fnic = vnic_dev_priv(wq->vdev); | |
1455 | struct fnic_io_req *io_req; | |
1456 | struct scsi_cmnd *sc; | |
1457 | unsigned long flags; | |
1458 | spinlock_t *io_lock; | |
14eb5d90 | 1459 | unsigned long start_time = 0; |
5df6d737 AJ |
1460 | |
1461 | /* get the tag reference */ | |
1462 | fcpio_tag_id_dec(&desc->hdr.tag, &id); | |
1463 | id &= FNIC_TAG_MASK; | |
1464 | ||
fc85799e | 1465 | if (id >= fnic->fnic_max_tag_id) |
5df6d737 AJ |
1466 | return; |
1467 | ||
1468 | sc = scsi_host_find_tag(fnic->lport->host, id); | |
1469 | if (!sc) | |
1470 | return; | |
1471 | ||
1472 | io_lock = fnic_io_lock_hash(fnic, sc); | |
1473 | spin_lock_irqsave(io_lock, flags); | |
1474 | ||
1475 | /* Get the IO context which this desc refers to */ | |
1476 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
1477 | ||
1478 | /* fnic interrupts are turned off by now */ | |
1479 | ||
1480 | if (!io_req) { | |
1481 | spin_unlock_irqrestore(io_lock, flags); | |
1482 | goto wq_copy_cleanup_scsi_cmd; | |
1483 | } | |
1484 | ||
1485 | CMD_SP(sc) = NULL; | |
1486 | ||
1487 | spin_unlock_irqrestore(io_lock, flags); | |
1488 | ||
14eb5d90 | 1489 | start_time = io_req->start_time; |
5df6d737 AJ |
1490 | fnic_release_ioreq_buf(fnic, io_req, sc); |
1491 | mempool_free(io_req, fnic->io_req_pool); | |
1492 | ||
1493 | wq_copy_cleanup_scsi_cmd: | |
1494 | sc->result = DID_NO_CONNECT << 16; | |
1495 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, "wq_copy_cleanup_handler:" | |
1496 | " DID_NO_CONNECT\n"); | |
1497 | ||
4d7007b4 HP |
1498 | if (sc->scsi_done) { |
1499 | FNIC_TRACE(fnic_wq_copy_cleanup_handler, | |
1500 | sc->device->host->host_no, id, sc, | |
1501 | jiffies_to_msecs(jiffies - start_time), | |
1502 | 0, ((u64)sc->cmnd[0] << 32 | | |
1503 | (u64)sc->cmnd[2] << 24 | (u64)sc->cmnd[3] << 16 | | |
1504 | (u64)sc->cmnd[4] << 8 | sc->cmnd[5]), | |
1505 | (((u64)CMD_FLAGS(sc) << 32) | CMD_STATE(sc))); | |
1506 | ||
5df6d737 | 1507 | sc->scsi_done(sc); |
4d7007b4 | 1508 | } |
5df6d737 AJ |
1509 | } |
1510 | ||
1511 | static inline int fnic_queue_abort_io_req(struct fnic *fnic, int tag, | |
1512 | u32 task_req, u8 *fc_lun, | |
1513 | struct fnic_io_req *io_req) | |
1514 | { | |
1515 | struct vnic_wq_copy *wq = &fnic->wq_copy[0]; | |
03298552 | 1516 | struct Scsi_Host *host = fnic->lport->host; |
67125b02 | 1517 | struct misc_stats *misc_stats = &fnic->fnic_stats.misc_stats; |
5df6d737 AJ |
1518 | unsigned long flags; |
1519 | ||
03298552 HP |
1520 | spin_lock_irqsave(host->host_lock, flags); |
1521 | if (unlikely(fnic_chk_state_flags_locked(fnic, | |
1522 | FNIC_FLAGS_IO_BLOCKED))) { | |
1523 | spin_unlock_irqrestore(host->host_lock, flags); | |
1524 | return 1; | |
1525 | } else | |
1526 | atomic_inc(&fnic->in_flight); | |
1527 | spin_unlock_irqrestore(host->host_lock, flags); | |
1528 | ||
5df6d737 AJ |
1529 | spin_lock_irqsave(&fnic->wq_copy_lock[0], flags); |
1530 | ||
1531 | if (vnic_wq_copy_desc_avail(wq) <= fnic->wq_copy_desc_low[0]) | |
1532 | free_wq_copy_descs(fnic, wq); | |
1533 | ||
1534 | if (!vnic_wq_copy_desc_avail(wq)) { | |
1535 | spin_unlock_irqrestore(&fnic->wq_copy_lock[0], flags); | |
03298552 | 1536 | atomic_dec(&fnic->in_flight); |
14eb5d90 | 1537 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
03298552 | 1538 | "fnic_queue_abort_io_req: failure: no descriptors\n"); |
67125b02 | 1539 | atomic64_inc(&misc_stats->abts_cpwq_alloc_failures); |
5df6d737 AJ |
1540 | return 1; |
1541 | } | |
1542 | fnic_queue_wq_copy_desc_itmf(wq, tag | FNIC_TAG_ABORT, | |
1543 | 0, task_req, tag, fc_lun, io_req->port_id, | |
1544 | fnic->config.ra_tov, fnic->config.ed_tov); | |
1545 | ||
67125b02 HP |
1546 | atomic64_inc(&fnic->fnic_stats.fw_stats.active_fw_reqs); |
1547 | if (atomic64_read(&fnic->fnic_stats.fw_stats.active_fw_reqs) > | |
1548 | atomic64_read(&fnic->fnic_stats.fw_stats.max_fw_reqs)) | |
1549 | atomic64_set(&fnic->fnic_stats.fw_stats.max_fw_reqs, | |
1550 | atomic64_read(&fnic->fnic_stats.fw_stats.active_fw_reqs)); | |
1551 | ||
5df6d737 | 1552 | spin_unlock_irqrestore(&fnic->wq_copy_lock[0], flags); |
03298552 HP |
1553 | atomic_dec(&fnic->in_flight); |
1554 | ||
5df6d737 AJ |
1555 | return 0; |
1556 | } | |
1557 | ||
35ffbb60 HR |
1558 | struct fnic_rport_abort_io_iter_data { |
1559 | struct fnic *fnic; | |
1560 | u32 port_id; | |
1561 | int term_cnt; | |
1562 | }; | |
1563 | ||
1564 | static bool fnic_rport_abort_io_iter(struct scsi_cmnd *sc, void *data, | |
1565 | bool reserved) | |
5df6d737 | 1566 | { |
35ffbb60 HR |
1567 | struct fnic_rport_abort_io_iter_data *iter_data = data; |
1568 | struct fnic *fnic = iter_data->fnic; | |
e1c9f0cf | 1569 | int abt_tag = scsi_cmd_to_rq(sc)->tag; |
5df6d737 AJ |
1570 | struct fnic_io_req *io_req; |
1571 | spinlock_t *io_lock; | |
1572 | unsigned long flags; | |
67125b02 HP |
1573 | struct reset_stats *reset_stats = &fnic->fnic_stats.reset_stats; |
1574 | struct terminate_stats *term_stats = &fnic->fnic_stats.term_stats; | |
5df6d737 AJ |
1575 | struct scsi_lun fc_lun; |
1576 | enum fnic_ioreq_state old_ioreq_state; | |
1577 | ||
35ffbb60 HR |
1578 | io_lock = fnic_io_lock_tag(fnic, abt_tag); |
1579 | spin_lock_irqsave(io_lock, flags); | |
5df6d737 | 1580 | |
35ffbb60 | 1581 | io_req = (struct fnic_io_req *)CMD_SP(sc); |
5df6d737 | 1582 | |
35ffbb60 HR |
1583 | if (!io_req || io_req->port_id != iter_data->port_id) { |
1584 | spin_unlock_irqrestore(io_lock, flags); | |
1585 | return true; | |
1586 | } | |
5df6d737 | 1587 | |
35ffbb60 HR |
1588 | if ((CMD_FLAGS(sc) & FNIC_DEVICE_RESET) && |
1589 | (!(CMD_FLAGS(sc) & FNIC_DEV_RST_ISSUED))) { | |
1590 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
03298552 HP |
1591 | "fnic_rport_exch_reset dev rst not pending sc 0x%p\n", |
1592 | sc); | |
35ffbb60 HR |
1593 | spin_unlock_irqrestore(io_lock, flags); |
1594 | return true; | |
1595 | } | |
03298552 | 1596 | |
35ffbb60 HR |
1597 | /* |
1598 | * Found IO that is still pending with firmware and | |
1599 | * belongs to rport that went away | |
1600 | */ | |
1601 | if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) { | |
1602 | spin_unlock_irqrestore(io_lock, flags); | |
1603 | return true; | |
1604 | } | |
1605 | if (io_req->abts_done) { | |
1606 | shost_printk(KERN_ERR, fnic->lport->host, | |
03298552 HP |
1607 | "fnic_rport_exch_reset: io_req->abts_done is set " |
1608 | "state is %s\n", | |
1609 | fnic_ioreq_state_to_str(CMD_STATE(sc))); | |
35ffbb60 | 1610 | } |
03298552 | 1611 | |
35ffbb60 HR |
1612 | if (!(CMD_FLAGS(sc) & FNIC_IO_ISSUED)) { |
1613 | shost_printk(KERN_ERR, fnic->lport->host, | |
1614 | "rport_exch_reset " | |
1615 | "IO not yet issued %p tag 0x%x flags " | |
1616 | "%x state %d\n", | |
1617 | sc, abt_tag, CMD_FLAGS(sc), CMD_STATE(sc)); | |
1618 | } | |
1619 | old_ioreq_state = CMD_STATE(sc); | |
1620 | CMD_STATE(sc) = FNIC_IOREQ_ABTS_PENDING; | |
1621 | CMD_ABTS_STATUS(sc) = FCPIO_INVALID_CODE; | |
1622 | if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) { | |
1623 | atomic64_inc(&reset_stats->device_reset_terminates); | |
1624 | abt_tag |= FNIC_TAG_DEV_RST; | |
1625 | } | |
1626 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
1627 | "fnic_rport_exch_reset dev rst sc 0x%p\n", sc); | |
1628 | BUG_ON(io_req->abts_done); | |
5df6d737 | 1629 | |
35ffbb60 HR |
1630 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
1631 | "fnic_rport_reset_exch: Issuing abts\n"); | |
5df6d737 | 1632 | |
35ffbb60 | 1633 | spin_unlock_irqrestore(io_lock, flags); |
5df6d737 | 1634 | |
35ffbb60 HR |
1635 | /* Now queue the abort command to firmware */ |
1636 | int_to_scsilun(sc->device->lun, &fc_lun); | |
1637 | ||
1638 | if (fnic_queue_abort_io_req(fnic, abt_tag, | |
1639 | FCPIO_ITMF_ABT_TASK_TERM, | |
1640 | fc_lun.scsi_lun, io_req)) { | |
1641 | /* | |
1642 | * Revert the cmd state back to old state, if | |
1643 | * it hasn't changed in between. This cmd will get | |
1644 | * aborted later by scsi_eh, or cleaned up during | |
1645 | * lun reset | |
1646 | */ | |
1647 | spin_lock_irqsave(io_lock, flags); | |
1648 | if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) | |
1649 | CMD_STATE(sc) = old_ioreq_state; | |
1650 | spin_unlock_irqrestore(io_lock, flags); | |
1651 | } else { | |
1652 | spin_lock_irqsave(io_lock, flags); | |
1653 | if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) | |
1654 | CMD_FLAGS(sc) |= FNIC_DEV_RST_TERM_ISSUED; | |
1655 | else | |
1656 | CMD_FLAGS(sc) |= FNIC_IO_INTERNAL_TERM_ISSUED; | |
5df6d737 | 1657 | spin_unlock_irqrestore(io_lock, flags); |
35ffbb60 HR |
1658 | atomic64_inc(&term_stats->terminates); |
1659 | iter_data->term_cnt++; | |
1660 | } | |
1661 | return true; | |
1662 | } | |
5df6d737 | 1663 | |
35ffbb60 HR |
1664 | static void fnic_rport_exch_reset(struct fnic *fnic, u32 port_id) |
1665 | { | |
1666 | struct terminate_stats *term_stats = &fnic->fnic_stats.term_stats; | |
1667 | struct fnic_rport_abort_io_iter_data iter_data = { | |
1668 | .fnic = fnic, | |
1669 | .port_id = port_id, | |
1670 | .term_cnt = 0, | |
1671 | }; | |
5df6d737 | 1672 | |
35ffbb60 HR |
1673 | FNIC_SCSI_DBG(KERN_DEBUG, |
1674 | fnic->lport->host, | |
1675 | "fnic_rport_exch_reset called portid 0x%06x\n", | |
1676 | port_id); | |
1677 | ||
1678 | if (fnic->in_remove) | |
1679 | return; | |
1680 | ||
1681 | scsi_host_busy_iter(fnic->lport->host, fnic_rport_abort_io_iter, | |
1682 | &iter_data); | |
1683 | if (iter_data.term_cnt > atomic64_read(&term_stats->max_terminates)) | |
1684 | atomic64_set(&term_stats->max_terminates, iter_data.term_cnt); | |
5df6d737 AJ |
1685 | |
1686 | } | |
1687 | ||
1688 | void fnic_terminate_rport_io(struct fc_rport *rport) | |
1689 | { | |
d0385d92 SB |
1690 | struct fc_rport_libfc_priv *rdata; |
1691 | struct fc_lport *lport; | |
1692 | struct fnic *fnic; | |
5df6d737 | 1693 | |
d0385d92 SB |
1694 | if (!rport) { |
1695 | printk(KERN_ERR "fnic_terminate_rport_io: rport is NULL\n"); | |
1696 | return; | |
1697 | } | |
1698 | rdata = rport->dd_data; | |
1699 | ||
1700 | if (!rdata) { | |
1701 | printk(KERN_ERR "fnic_terminate_rport_io: rdata is NULL\n"); | |
1702 | return; | |
1703 | } | |
1704 | lport = rdata->local_port; | |
1705 | ||
1706 | if (!lport) { | |
1707 | printk(KERN_ERR "fnic_terminate_rport_io: lport is NULL\n"); | |
1708 | return; | |
1709 | } | |
1710 | fnic = lport_priv(lport); | |
5df6d737 AJ |
1711 | FNIC_SCSI_DBG(KERN_DEBUG, |
1712 | fnic->lport->host, "fnic_terminate_rport_io called" | |
03298552 HP |
1713 | " wwpn 0x%llx, wwnn0x%llx, rport 0x%p, portid 0x%06x\n", |
1714 | rport->port_name, rport->node_name, rport, | |
5df6d737 AJ |
1715 | rport->port_id); |
1716 | ||
1717 | if (fnic->in_remove) | |
1718 | return; | |
1719 | ||
35ffbb60 | 1720 | fnic_rport_exch_reset(fnic, rport->port_id); |
5df6d737 AJ |
1721 | } |
1722 | ||
5df6d737 AJ |
1723 | /* |
1724 | * This function is exported to SCSI for sending abort cmnds. | |
1725 | * A SCSI IO is represented by a io_req in the driver. | |
1726 | * The ioreq is linked to the SCSI Cmd, thus a link with the ULP's IO. | |
1727 | */ | |
1728 | int fnic_abort_cmd(struct scsi_cmnd *sc) | |
1729 | { | |
e1c9f0cf | 1730 | struct request *const rq = scsi_cmd_to_rq(sc); |
5df6d737 AJ |
1731 | struct fc_lport *lp; |
1732 | struct fnic *fnic; | |
4d7007b4 | 1733 | struct fnic_io_req *io_req = NULL; |
5df6d737 AJ |
1734 | struct fc_rport *rport; |
1735 | spinlock_t *io_lock; | |
1736 | unsigned long flags; | |
14eb5d90 | 1737 | unsigned long start_time = 0; |
5df6d737 | 1738 | int ret = SUCCESS; |
14eb5d90 | 1739 | u32 task_req = 0; |
5df6d737 | 1740 | struct scsi_lun fc_lun; |
67125b02 HP |
1741 | struct fnic_stats *fnic_stats; |
1742 | struct abort_stats *abts_stats; | |
1743 | struct terminate_stats *term_stats; | |
66818663 | 1744 | enum fnic_ioreq_state old_ioreq_state; |
e1c9f0cf | 1745 | const int tag = rq->tag; |
445d2960 | 1746 | unsigned long abt_issued_time; |
5df6d737 AJ |
1747 | DECLARE_COMPLETION_ONSTACK(tm_done); |
1748 | ||
1749 | /* Wait for rport to unblock */ | |
65d430fa | 1750 | fc_block_scsi_eh(sc); |
5df6d737 AJ |
1751 | |
1752 | /* Get local-port, check ready and link up */ | |
1753 | lp = shost_priv(sc->device->host); | |
1754 | ||
1755 | fnic = lport_priv(lp); | |
67125b02 HP |
1756 | fnic_stats = &fnic->fnic_stats; |
1757 | abts_stats = &fnic->fnic_stats.abts_stats; | |
1758 | term_stats = &fnic->fnic_stats.term_stats; | |
1759 | ||
0db6f435 | 1760 | rport = starget_to_rport(scsi_target(sc->device)); |
03298552 HP |
1761 | FNIC_SCSI_DBG(KERN_DEBUG, |
1762 | fnic->lport->host, | |
9cb78c16 | 1763 | "Abort Cmd called FCID 0x%x, LUN 0x%llx TAG %x flags %x\n", |
03298552 HP |
1764 | rport->port_id, sc->device->lun, tag, CMD_FLAGS(sc)); |
1765 | ||
1766 | CMD_FLAGS(sc) = FNIC_NO_FLAGS; | |
1767 | ||
5df6d737 AJ |
1768 | if (lp->state != LPORT_ST_READY || !(lp->link_up)) { |
1769 | ret = FAILED; | |
1770 | goto fnic_abort_cmd_end; | |
1771 | } | |
1772 | ||
1773 | /* | |
1774 | * Avoid a race between SCSI issuing the abort and the device | |
1775 | * completing the command. | |
1776 | * | |
1777 | * If the command is already completed by the fw cmpl code, | |
1778 | * we just return SUCCESS from here. This means that the abort | |
1779 | * succeeded. In the SCSI ML, since the timeout for command has | |
1780 | * happened, the completion wont actually complete the command | |
1781 | * and it will be considered as an aborted command | |
1782 | * | |
1783 | * The CMD_SP will not be cleared except while holding io_req_lock. | |
1784 | */ | |
1785 | io_lock = fnic_io_lock_hash(fnic, sc); | |
1786 | spin_lock_irqsave(io_lock, flags); | |
1787 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
1788 | if (!io_req) { | |
1789 | spin_unlock_irqrestore(io_lock, flags); | |
1790 | goto fnic_abort_cmd_end; | |
1791 | } | |
1792 | ||
1793 | io_req->abts_done = &tm_done; | |
1794 | ||
1795 | if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) { | |
1796 | spin_unlock_irqrestore(io_lock, flags); | |
1797 | goto wait_pending; | |
1798 | } | |
445d2960 SK |
1799 | |
1800 | abt_issued_time = jiffies_to_msecs(jiffies) - jiffies_to_msecs(io_req->start_time); | |
1801 | if (abt_issued_time <= 6000) | |
1802 | atomic64_inc(&abts_stats->abort_issued_btw_0_to_6_sec); | |
1803 | else if (abt_issued_time > 6000 && abt_issued_time <= 20000) | |
1804 | atomic64_inc(&abts_stats->abort_issued_btw_6_to_20_sec); | |
1805 | else if (abt_issued_time > 20000 && abt_issued_time <= 30000) | |
1806 | atomic64_inc(&abts_stats->abort_issued_btw_20_to_30_sec); | |
1807 | else if (abt_issued_time > 30000 && abt_issued_time <= 40000) | |
1808 | atomic64_inc(&abts_stats->abort_issued_btw_30_to_40_sec); | |
1809 | else if (abt_issued_time > 40000 && abt_issued_time <= 50000) | |
1810 | atomic64_inc(&abts_stats->abort_issued_btw_40_to_50_sec); | |
1811 | else if (abt_issued_time > 50000 && abt_issued_time <= 60000) | |
1812 | atomic64_inc(&abts_stats->abort_issued_btw_50_to_60_sec); | |
1813 | else | |
1814 | atomic64_inc(&abts_stats->abort_issued_greater_than_60_sec); | |
1815 | ||
1816 | FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host, | |
1817 | "CBD Opcode: %02x Abort issued time: %lu msec\n", sc->cmnd[0], abt_issued_time); | |
5df6d737 AJ |
1818 | /* |
1819 | * Command is still pending, need to abort it | |
1820 | * If the firmware completes the command after this point, | |
1821 | * the completion wont be done till mid-layer, since abort | |
1822 | * has already started. | |
1823 | */ | |
66818663 | 1824 | old_ioreq_state = CMD_STATE(sc); |
5df6d737 AJ |
1825 | CMD_STATE(sc) = FNIC_IOREQ_ABTS_PENDING; |
1826 | CMD_ABTS_STATUS(sc) = FCPIO_INVALID_CODE; | |
1827 | ||
1828 | spin_unlock_irqrestore(io_lock, flags); | |
1829 | ||
1830 | /* | |
1831 | * Check readiness of the remote port. If the path to remote | |
1832 | * port is up, then send abts to the remote port to terminate | |
1833 | * the IO. Else, just locally terminate the IO in the firmware | |
1834 | */ | |
5df6d737 AJ |
1835 | if (fc_remote_port_chkready(rport) == 0) |
1836 | task_req = FCPIO_ITMF_ABT_TASK; | |
67125b02 HP |
1837 | else { |
1838 | atomic64_inc(&fnic_stats->misc_stats.rport_not_ready); | |
5df6d737 | 1839 | task_req = FCPIO_ITMF_ABT_TASK_TERM; |
67125b02 | 1840 | } |
5df6d737 AJ |
1841 | |
1842 | /* Now queue the abort command to firmware */ | |
1843 | int_to_scsilun(sc->device->lun, &fc_lun); | |
1844 | ||
e1c9f0cf BVA |
1845 | if (fnic_queue_abort_io_req(fnic, tag, task_req, fc_lun.scsi_lun, |
1846 | io_req)) { | |
5df6d737 | 1847 | spin_lock_irqsave(io_lock, flags); |
66818663 HS |
1848 | if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) |
1849 | CMD_STATE(sc) = old_ioreq_state; | |
5df6d737 AJ |
1850 | io_req = (struct fnic_io_req *)CMD_SP(sc); |
1851 | if (io_req) | |
1852 | io_req->abts_done = NULL; | |
1853 | spin_unlock_irqrestore(io_lock, flags); | |
1854 | ret = FAILED; | |
1855 | goto fnic_abort_cmd_end; | |
1856 | } | |
67125b02 | 1857 | if (task_req == FCPIO_ITMF_ABT_TASK) { |
14eb5d90 | 1858 | CMD_FLAGS(sc) |= FNIC_IO_ABTS_ISSUED; |
67125b02 HP |
1859 | atomic64_inc(&fnic_stats->abts_stats.aborts); |
1860 | } else { | |
14eb5d90 | 1861 | CMD_FLAGS(sc) |= FNIC_IO_TERM_ISSUED; |
67125b02 HP |
1862 | atomic64_inc(&fnic_stats->term_stats.terminates); |
1863 | } | |
5df6d737 AJ |
1864 | |
1865 | /* | |
1866 | * We queued an abort IO, wait for its completion. | |
1867 | * Once the firmware completes the abort command, it will | |
1868 | * wake up this thread. | |
1869 | */ | |
1870 | wait_pending: | |
1871 | wait_for_completion_timeout(&tm_done, | |
1872 | msecs_to_jiffies | |
1873 | (2 * fnic->config.ra_tov + | |
1874 | fnic->config.ed_tov)); | |
1875 | ||
1876 | /* Check the abort status */ | |
1877 | spin_lock_irqsave(io_lock, flags); | |
1878 | ||
1879 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
1880 | if (!io_req) { | |
67125b02 | 1881 | atomic64_inc(&fnic_stats->io_stats.ioreq_null); |
5df6d737 | 1882 | spin_unlock_irqrestore(io_lock, flags); |
14eb5d90 | 1883 | CMD_FLAGS(sc) |= FNIC_IO_ABT_TERM_REQ_NULL; |
5df6d737 AJ |
1884 | ret = FAILED; |
1885 | goto fnic_abort_cmd_end; | |
1886 | } | |
1887 | io_req->abts_done = NULL; | |
1888 | ||
1889 | /* fw did not complete abort, timed out */ | |
1259c5dc | 1890 | if (CMD_ABTS_STATUS(sc) == FCPIO_INVALID_CODE) { |
5df6d737 | 1891 | spin_unlock_irqrestore(io_lock, flags); |
67125b02 | 1892 | if (task_req == FCPIO_ITMF_ABT_TASK) { |
67125b02 HP |
1893 | atomic64_inc(&abts_stats->abort_drv_timeouts); |
1894 | } else { | |
67125b02 HP |
1895 | atomic64_inc(&term_stats->terminate_drv_timeouts); |
1896 | } | |
14eb5d90 | 1897 | CMD_FLAGS(sc) |= FNIC_IO_ABT_TERM_TIMED_OUT; |
5df6d737 AJ |
1898 | ret = FAILED; |
1899 | goto fnic_abort_cmd_end; | |
1900 | } | |
1901 | ||
efc7a288 AC |
1902 | /* IO out of order */ |
1903 | ||
1904 | if (!(CMD_FLAGS(sc) & (FNIC_IO_ABORTED | FNIC_IO_DONE))) { | |
1905 | spin_unlock_irqrestore(io_lock, flags); | |
1906 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
1907 | "Issuing Host reset due to out of order IO\n"); | |
1908 | ||
efc7a288 AC |
1909 | ret = FAILED; |
1910 | goto fnic_abort_cmd_end; | |
1911 | } | |
1912 | ||
1259c5dc SB |
1913 | CMD_STATE(sc) = FNIC_IOREQ_ABTS_COMPLETE; |
1914 | ||
691a837c | 1915 | start_time = io_req->start_time; |
5df6d737 AJ |
1916 | /* |
1917 | * firmware completed the abort, check the status, | |
691a837c SK |
1918 | * free the io_req if successful. If abort fails, |
1919 | * Device reset will clean the I/O. | |
5df6d737 | 1920 | */ |
691a837c SK |
1921 | if (CMD_ABTS_STATUS(sc) == FCPIO_SUCCESS) |
1922 | CMD_SP(sc) = NULL; | |
1923 | else { | |
5df6d737 | 1924 | ret = FAILED; |
691a837c SK |
1925 | spin_unlock_irqrestore(io_lock, flags); |
1926 | goto fnic_abort_cmd_end; | |
1927 | } | |
5df6d737 AJ |
1928 | |
1929 | spin_unlock_irqrestore(io_lock, flags); | |
1930 | ||
1931 | fnic_release_ioreq_buf(fnic, io_req, sc); | |
1932 | mempool_free(io_req, fnic->io_req_pool); | |
1933 | ||
691a837c SK |
1934 | if (sc->scsi_done) { |
1935 | /* Call SCSI completion function to complete the IO */ | |
1936 | sc->result = (DID_ABORT << 16); | |
1937 | sc->scsi_done(sc); | |
7ef539c8 SK |
1938 | atomic64_dec(&fnic_stats->io_stats.active_ios); |
1939 | if (atomic64_read(&fnic->io_cmpl_skip)) | |
1940 | atomic64_dec(&fnic->io_cmpl_skip); | |
1941 | else | |
1942 | atomic64_inc(&fnic_stats->io_stats.io_completions); | |
691a837c SK |
1943 | } |
1944 | ||
5df6d737 | 1945 | fnic_abort_cmd_end: |
e1c9f0cf | 1946 | FNIC_TRACE(fnic_abort_cmd, sc->device->host->host_no, tag, sc, |
4d7007b4 HP |
1947 | jiffies_to_msecs(jiffies - start_time), |
1948 | 0, ((u64)sc->cmnd[0] << 32 | | |
1949 | (u64)sc->cmnd[2] << 24 | (u64)sc->cmnd[3] << 16 | | |
1950 | (u64)sc->cmnd[4] << 8 | sc->cmnd[5]), | |
1951 | (((u64)CMD_FLAGS(sc) << 32) | CMD_STATE(sc))); | |
1952 | ||
5df6d737 | 1953 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
14eb5d90 | 1954 | "Returning from abort cmd type %x %s\n", task_req, |
5df6d737 AJ |
1955 | (ret == SUCCESS) ? |
1956 | "SUCCESS" : "FAILED"); | |
1957 | return ret; | |
1958 | } | |
1959 | ||
1960 | static inline int fnic_queue_dr_io_req(struct fnic *fnic, | |
1961 | struct scsi_cmnd *sc, | |
1962 | struct fnic_io_req *io_req) | |
1963 | { | |
1964 | struct vnic_wq_copy *wq = &fnic->wq_copy[0]; | |
03298552 | 1965 | struct Scsi_Host *host = fnic->lport->host; |
67125b02 | 1966 | struct misc_stats *misc_stats = &fnic->fnic_stats.misc_stats; |
5df6d737 AJ |
1967 | struct scsi_lun fc_lun; |
1968 | int ret = 0; | |
1969 | unsigned long intr_flags; | |
1970 | ||
03298552 HP |
1971 | spin_lock_irqsave(host->host_lock, intr_flags); |
1972 | if (unlikely(fnic_chk_state_flags_locked(fnic, | |
1973 | FNIC_FLAGS_IO_BLOCKED))) { | |
1974 | spin_unlock_irqrestore(host->host_lock, intr_flags); | |
1975 | return FAILED; | |
1976 | } else | |
1977 | atomic_inc(&fnic->in_flight); | |
1978 | spin_unlock_irqrestore(host->host_lock, intr_flags); | |
1979 | ||
5df6d737 AJ |
1980 | spin_lock_irqsave(&fnic->wq_copy_lock[0], intr_flags); |
1981 | ||
1982 | if (vnic_wq_copy_desc_avail(wq) <= fnic->wq_copy_desc_low[0]) | |
1983 | free_wq_copy_descs(fnic, wq); | |
1984 | ||
1985 | if (!vnic_wq_copy_desc_avail(wq)) { | |
14eb5d90 HP |
1986 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
1987 | "queue_dr_io_req failure - no descriptors\n"); | |
67125b02 | 1988 | atomic64_inc(&misc_stats->devrst_cpwq_alloc_failures); |
5df6d737 AJ |
1989 | ret = -EAGAIN; |
1990 | goto lr_io_req_end; | |
1991 | } | |
1992 | ||
1993 | /* fill in the lun info */ | |
1994 | int_to_scsilun(sc->device->lun, &fc_lun); | |
1995 | ||
e1c9f0cf | 1996 | fnic_queue_wq_copy_desc_itmf(wq, scsi_cmd_to_rq(sc)->tag | FNIC_TAG_DEV_RST, |
5df6d737 AJ |
1997 | 0, FCPIO_ITMF_LUN_RESET, SCSI_NO_TAG, |
1998 | fc_lun.scsi_lun, io_req->port_id, | |
1999 | fnic->config.ra_tov, fnic->config.ed_tov); | |
2000 | ||
67125b02 HP |
2001 | atomic64_inc(&fnic->fnic_stats.fw_stats.active_fw_reqs); |
2002 | if (atomic64_read(&fnic->fnic_stats.fw_stats.active_fw_reqs) > | |
2003 | atomic64_read(&fnic->fnic_stats.fw_stats.max_fw_reqs)) | |
2004 | atomic64_set(&fnic->fnic_stats.fw_stats.max_fw_reqs, | |
2005 | atomic64_read(&fnic->fnic_stats.fw_stats.active_fw_reqs)); | |
2006 | ||
5df6d737 AJ |
2007 | lr_io_req_end: |
2008 | spin_unlock_irqrestore(&fnic->wq_copy_lock[0], intr_flags); | |
03298552 | 2009 | atomic_dec(&fnic->in_flight); |
5df6d737 AJ |
2010 | |
2011 | return ret; | |
2012 | } | |
2013 | ||
35ffbb60 HR |
2014 | struct fnic_pending_aborts_iter_data { |
2015 | struct fnic *fnic; | |
2016 | struct scsi_cmnd *lr_sc; | |
2017 | struct scsi_device *lun_dev; | |
2018 | int ret; | |
2019 | }; | |
a36f5dd0 | 2020 | |
35ffbb60 HR |
2021 | static bool fnic_pending_aborts_iter(struct scsi_cmnd *sc, |
2022 | void *data, bool reserved) | |
5df6d737 | 2023 | { |
35ffbb60 HR |
2024 | struct fnic_pending_aborts_iter_data *iter_data = data; |
2025 | struct fnic *fnic = iter_data->fnic; | |
2026 | struct scsi_device *lun_dev = iter_data->lun_dev; | |
e1c9f0cf | 2027 | int abt_tag = scsi_cmd_to_rq(sc)->tag; |
5df6d737 AJ |
2028 | struct fnic_io_req *io_req; |
2029 | spinlock_t *io_lock; | |
2030 | unsigned long flags; | |
5df6d737 | 2031 | struct scsi_lun fc_lun; |
5df6d737 | 2032 | DECLARE_COMPLETION_ONSTACK(tm_done); |
a0bf1ca2 | 2033 | enum fnic_ioreq_state old_ioreq_state; |
5df6d737 | 2034 | |
35ffbb60 HR |
2035 | if (sc == iter_data->lr_sc || sc->device != lun_dev) |
2036 | return true; | |
2037 | if (reserved) | |
2038 | return true; | |
5df6d737 | 2039 | |
35ffbb60 HR |
2040 | io_lock = fnic_io_lock_tag(fnic, abt_tag); |
2041 | spin_lock_irqsave(io_lock, flags); | |
2042 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
2043 | if (!io_req) { | |
2044 | spin_unlock_irqrestore(io_lock, flags); | |
2045 | return true; | |
2046 | } | |
1259c5dc | 2047 | |
35ffbb60 HR |
2048 | /* |
2049 | * Found IO that is still pending with firmware and | |
2050 | * belongs to the LUN that we are resetting | |
2051 | */ | |
2052 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
2053 | "Found IO in %s on lun\n", | |
2054 | fnic_ioreq_state_to_str(CMD_STATE(sc))); | |
a0bf1ca2 | 2055 | |
35ffbb60 HR |
2056 | if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) { |
2057 | spin_unlock_irqrestore(io_lock, flags); | |
2058 | return true; | |
2059 | } | |
2060 | if ((CMD_FLAGS(sc) & FNIC_DEVICE_RESET) && | |
2061 | (!(CMD_FLAGS(sc) & FNIC_DEV_RST_ISSUED))) { | |
2062 | FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host, | |
2063 | "%s dev rst not pending sc 0x%p\n", __func__, | |
2064 | sc); | |
2065 | spin_unlock_irqrestore(io_lock, flags); | |
2066 | return true; | |
2067 | } | |
a0bf1ca2 | 2068 | |
35ffbb60 HR |
2069 | if (io_req->abts_done) |
2070 | shost_printk(KERN_ERR, fnic->lport->host, | |
2071 | "%s: io_req->abts_done is set state is %s\n", | |
2072 | __func__, fnic_ioreq_state_to_str(CMD_STATE(sc))); | |
2073 | old_ioreq_state = CMD_STATE(sc); | |
2074 | /* | |
2075 | * Any pending IO issued prior to reset is expected to be | |
2076 | * in abts pending state, if not we need to set | |
2077 | * FNIC_IOREQ_ABTS_PENDING to indicate the IO is abort pending. | |
2078 | * When IO is completed, the IO will be handed over and | |
2079 | * handled in this function. | |
2080 | */ | |
2081 | CMD_STATE(sc) = FNIC_IOREQ_ABTS_PENDING; | |
5df6d737 | 2082 | |
35ffbb60 | 2083 | BUG_ON(io_req->abts_done); |
5df6d737 | 2084 | |
35ffbb60 HR |
2085 | if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) { |
2086 | abt_tag |= FNIC_TAG_DEV_RST; | |
2087 | FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host, | |
2088 | "%s: dev rst sc 0x%p\n", __func__, sc); | |
2089 | } | |
5df6d737 | 2090 | |
35ffbb60 HR |
2091 | CMD_ABTS_STATUS(sc) = FCPIO_INVALID_CODE; |
2092 | io_req->abts_done = &tm_done; | |
2093 | spin_unlock_irqrestore(io_lock, flags); | |
5df6d737 | 2094 | |
35ffbb60 HR |
2095 | /* Now queue the abort command to firmware */ |
2096 | int_to_scsilun(sc->device->lun, &fc_lun); | |
5df6d737 | 2097 | |
35ffbb60 HR |
2098 | if (fnic_queue_abort_io_req(fnic, abt_tag, |
2099 | FCPIO_ITMF_ABT_TASK_TERM, | |
2100 | fc_lun.scsi_lun, io_req)) { | |
5df6d737 AJ |
2101 | spin_lock_irqsave(io_lock, flags); |
2102 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
35ffbb60 HR |
2103 | if (io_req) |
2104 | io_req->abts_done = NULL; | |
2105 | if (CMD_STATE(sc) == FNIC_IOREQ_ABTS_PENDING) | |
2106 | CMD_STATE(sc) = old_ioreq_state; | |
2107 | spin_unlock_irqrestore(io_lock, flags); | |
2108 | iter_data->ret = FAILED; | |
2109 | return false; | |
2110 | } else { | |
2111 | spin_lock_irqsave(io_lock, flags); | |
2112 | if (CMD_FLAGS(sc) & FNIC_DEVICE_RESET) | |
2113 | CMD_FLAGS(sc) |= FNIC_DEV_RST_TERM_ISSUED; | |
2114 | spin_unlock_irqrestore(io_lock, flags); | |
2115 | } | |
2116 | CMD_FLAGS(sc) |= FNIC_IO_INTERNAL_TERM_ISSUED; | |
5df6d737 | 2117 | |
35ffbb60 HR |
2118 | wait_for_completion_timeout(&tm_done, msecs_to_jiffies |
2119 | (fnic->config.ed_tov)); | |
5df6d737 | 2120 | |
35ffbb60 HR |
2121 | /* Recheck cmd state to check if it is now aborted */ |
2122 | spin_lock_irqsave(io_lock, flags); | |
2123 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
2124 | if (!io_req) { | |
2125 | spin_unlock_irqrestore(io_lock, flags); | |
2126 | CMD_FLAGS(sc) |= FNIC_IO_ABT_TERM_REQ_NULL; | |
2127 | return true; | |
2128 | } | |
a36f5dd0 | 2129 | |
35ffbb60 HR |
2130 | io_req->abts_done = NULL; |
2131 | ||
2132 | /* if abort is still pending with fw, fail */ | |
2133 | if (CMD_ABTS_STATUS(sc) == FCPIO_INVALID_CODE) { | |
5df6d737 | 2134 | spin_unlock_irqrestore(io_lock, flags); |
35ffbb60 HR |
2135 | CMD_FLAGS(sc) |= FNIC_IO_ABT_TERM_DONE; |
2136 | iter_data->ret = FAILED; | |
2137 | return false; | |
2138 | } | |
2139 | CMD_STATE(sc) = FNIC_IOREQ_ABTS_COMPLETE; | |
5df6d737 | 2140 | |
35ffbb60 HR |
2141 | /* original sc used for lr is handled by dev reset code */ |
2142 | if (sc != iter_data->lr_sc) | |
2143 | CMD_SP(sc) = NULL; | |
2144 | spin_unlock_irqrestore(io_lock, flags); | |
a36f5dd0 | 2145 | |
35ffbb60 HR |
2146 | /* original sc used for lr is handled by dev reset code */ |
2147 | if (sc != iter_data->lr_sc) { | |
2148 | fnic_release_ioreq_buf(fnic, io_req, sc); | |
2149 | mempool_free(io_req, fnic->io_req_pool); | |
5df6d737 AJ |
2150 | } |
2151 | ||
35ffbb60 HR |
2152 | /* |
2153 | * Any IO is returned during reset, it needs to call scsi_done | |
2154 | * to return the scsi_cmnd to upper layer. | |
2155 | */ | |
2156 | if (sc->scsi_done) { | |
2157 | /* Set result to let upper SCSI layer retry */ | |
2158 | sc->result = DID_RESET << 16; | |
2159 | sc->scsi_done(sc); | |
2160 | } | |
2161 | return true; | |
2162 | } | |
2163 | ||
2164 | /* | |
2165 | * Clean up any pending aborts on the lun | |
2166 | * For each outstanding IO on this lun, whose abort is not completed by fw, | |
2167 | * issue a local abort. Wait for abort to complete. Return 0 if all commands | |
2168 | * successfully aborted, 1 otherwise | |
2169 | */ | |
2170 | static int fnic_clean_pending_aborts(struct fnic *fnic, | |
2171 | struct scsi_cmnd *lr_sc, | |
2172 | bool new_sc) | |
2173 | ||
2174 | { | |
2175 | int ret = SUCCESS; | |
2176 | struct fnic_pending_aborts_iter_data iter_data = { | |
2177 | .fnic = fnic, | |
2178 | .lun_dev = lr_sc->device, | |
2179 | .ret = SUCCESS, | |
2180 | }; | |
2181 | ||
2182 | if (new_sc) | |
2183 | iter_data.lr_sc = lr_sc; | |
2184 | ||
2185 | scsi_host_busy_iter(fnic->lport->host, | |
2186 | fnic_pending_aborts_iter, &iter_data); | |
2187 | if (iter_data.ret == FAILED) { | |
2188 | ret = iter_data.ret; | |
2189 | goto clean_pending_aborts_end; | |
2190 | } | |
a0bf1ca2 HP |
2191 | schedule_timeout(msecs_to_jiffies(2 * fnic->config.ed_tov)); |
2192 | ||
2193 | /* walk again to check, if IOs are still pending in fw */ | |
2194 | if (fnic_is_abts_pending(fnic, lr_sc)) | |
2195 | ret = FAILED; | |
2196 | ||
5df6d737 AJ |
2197 | clean_pending_aborts_end: |
2198 | return ret; | |
2199 | } | |
2200 | ||
c7eab070 | 2201 | /* |
03298552 HP |
2202 | * fnic_scsi_host_start_tag |
2203 | * Allocates tagid from host's tag list | |
2204 | **/ | |
2205 | static inline int | |
2206 | fnic_scsi_host_start_tag(struct fnic *fnic, struct scsi_cmnd *sc) | |
2207 | { | |
e1c9f0cf BVA |
2208 | struct request *rq = scsi_cmd_to_rq(sc); |
2209 | struct request_queue *q = rq->q; | |
4d5b4ac1 | 2210 | struct request *dummy; |
03298552 | 2211 | |
4d5b4ac1 JA |
2212 | dummy = blk_mq_alloc_request(q, REQ_OP_WRITE, BLK_MQ_REQ_NOWAIT); |
2213 | if (IS_ERR(dummy)) | |
2214 | return SCSI_NO_TAG; | |
03298552 | 2215 | |
e0aebd25 | 2216 | rq->tag = dummy->tag; |
511c49fe | 2217 | sc->host_scribble = (unsigned char *)dummy; |
03298552 | 2218 | |
4d5b4ac1 | 2219 | return dummy->tag; |
03298552 HP |
2220 | } |
2221 | ||
c7eab070 | 2222 | /* |
03298552 HP |
2223 | * fnic_scsi_host_end_tag |
2224 | * frees tag allocated by fnic_scsi_host_start_tag. | |
2225 | **/ | |
2226 | static inline void | |
2227 | fnic_scsi_host_end_tag(struct fnic *fnic, struct scsi_cmnd *sc) | |
2228 | { | |
511c49fe | 2229 | struct request *dummy = (struct request *)sc->host_scribble; |
03298552 | 2230 | |
4d5b4ac1 | 2231 | blk_mq_free_request(dummy); |
03298552 HP |
2232 | } |
2233 | ||
5df6d737 AJ |
2234 | /* |
2235 | * SCSI Eh thread issues a Lun Reset when one or more commands on a LUN | |
2236 | * fail to get aborted. It calls driver's eh_device_reset with a SCSI command | |
2237 | * on the LUN. | |
2238 | */ | |
2239 | int fnic_device_reset(struct scsi_cmnd *sc) | |
2240 | { | |
e1c9f0cf | 2241 | struct request *rq = scsi_cmd_to_rq(sc); |
5df6d737 AJ |
2242 | struct fc_lport *lp; |
2243 | struct fnic *fnic; | |
4d7007b4 | 2244 | struct fnic_io_req *io_req = NULL; |
5df6d737 AJ |
2245 | struct fc_rport *rport; |
2246 | int status; | |
2247 | int ret = FAILED; | |
2248 | spinlock_t *io_lock; | |
2249 | unsigned long flags; | |
14eb5d90 | 2250 | unsigned long start_time = 0; |
03298552 | 2251 | struct scsi_lun fc_lun; |
67125b02 HP |
2252 | struct fnic_stats *fnic_stats; |
2253 | struct reset_stats *reset_stats; | |
e1c9f0cf | 2254 | int tag = rq->tag; |
5df6d737 | 2255 | DECLARE_COMPLETION_ONSTACK(tm_done); |
03298552 | 2256 | int tag_gen_flag = 0; /*to track tags allocated by fnic driver*/ |
a36f5dd0 | 2257 | bool new_sc = 0; |
5df6d737 AJ |
2258 | |
2259 | /* Wait for rport to unblock */ | |
65d430fa | 2260 | fc_block_scsi_eh(sc); |
5df6d737 AJ |
2261 | |
2262 | /* Get local-port, check ready and link up */ | |
2263 | lp = shost_priv(sc->device->host); | |
2264 | ||
2265 | fnic = lport_priv(lp); | |
67125b02 HP |
2266 | fnic_stats = &fnic->fnic_stats; |
2267 | reset_stats = &fnic->fnic_stats.reset_stats; | |
2268 | ||
2269 | atomic64_inc(&reset_stats->device_resets); | |
5df6d737 | 2270 | |
0db6f435 RK |
2271 | rport = starget_to_rport(scsi_target(sc->device)); |
2272 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
9cb78c16 | 2273 | "Device reset called FCID 0x%x, LUN 0x%llx sc 0x%p\n", |
03298552 | 2274 | rport->port_id, sc->device->lun, sc); |
5df6d737 AJ |
2275 | |
2276 | if (lp->state != LPORT_ST_READY || !(lp->link_up)) | |
2277 | goto fnic_device_reset_end; | |
2278 | ||
2279 | /* Check if remote port up */ | |
67125b02 HP |
2280 | if (fc_remote_port_chkready(rport)) { |
2281 | atomic64_inc(&fnic_stats->misc_stats.rport_not_ready); | |
5df6d737 | 2282 | goto fnic_device_reset_end; |
67125b02 | 2283 | } |
5df6d737 | 2284 | |
14eb5d90 | 2285 | CMD_FLAGS(sc) = FNIC_DEVICE_RESET; |
03298552 HP |
2286 | /* Allocate tag if not present */ |
2287 | ||
03298552 | 2288 | if (unlikely(tag < 0)) { |
4d637168 | 2289 | /* |
4d5b4ac1 JA |
2290 | * Really should fix the midlayer to pass in a proper |
2291 | * request for ioctls... | |
4d637168 | 2292 | */ |
03298552 HP |
2293 | tag = fnic_scsi_host_start_tag(fnic, sc); |
2294 | if (unlikely(tag == SCSI_NO_TAG)) | |
2295 | goto fnic_device_reset_end; | |
2296 | tag_gen_flag = 1; | |
a36f5dd0 | 2297 | new_sc = 1; |
03298552 | 2298 | } |
5df6d737 AJ |
2299 | io_lock = fnic_io_lock_hash(fnic, sc); |
2300 | spin_lock_irqsave(io_lock, flags); | |
2301 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
2302 | ||
2303 | /* | |
2304 | * If there is a io_req attached to this command, then use it, | |
2305 | * else allocate a new one. | |
2306 | */ | |
2307 | if (!io_req) { | |
2308 | io_req = mempool_alloc(fnic->io_req_pool, GFP_ATOMIC); | |
2309 | if (!io_req) { | |
2310 | spin_unlock_irqrestore(io_lock, flags); | |
2311 | goto fnic_device_reset_end; | |
2312 | } | |
2313 | memset(io_req, 0, sizeof(*io_req)); | |
2314 | io_req->port_id = rport->port_id; | |
2315 | CMD_SP(sc) = (char *)io_req; | |
2316 | } | |
2317 | io_req->dr_done = &tm_done; | |
2318 | CMD_STATE(sc) = FNIC_IOREQ_CMD_PENDING; | |
2319 | CMD_LR_STATUS(sc) = FCPIO_INVALID_CODE; | |
2320 | spin_unlock_irqrestore(io_lock, flags); | |
2321 | ||
03298552 | 2322 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, "TAG %x\n", tag); |
5df6d737 AJ |
2323 | |
2324 | /* | |
2325 | * issue the device reset, if enqueue failed, clean up the ioreq | |
2326 | * and break assoc with scsi cmd | |
2327 | */ | |
2328 | if (fnic_queue_dr_io_req(fnic, sc, io_req)) { | |
2329 | spin_lock_irqsave(io_lock, flags); | |
2330 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
2331 | if (io_req) | |
2332 | io_req->dr_done = NULL; | |
2333 | goto fnic_device_reset_clean; | |
2334 | } | |
03298552 | 2335 | spin_lock_irqsave(io_lock, flags); |
14eb5d90 | 2336 | CMD_FLAGS(sc) |= FNIC_DEV_RST_ISSUED; |
03298552 | 2337 | spin_unlock_irqrestore(io_lock, flags); |
5df6d737 AJ |
2338 | |
2339 | /* | |
2340 | * Wait on the local completion for LUN reset. The io_req may be | |
2341 | * freed while we wait since we hold no lock. | |
2342 | */ | |
2343 | wait_for_completion_timeout(&tm_done, | |
2344 | msecs_to_jiffies(FNIC_LUN_RESET_TIMEOUT)); | |
2345 | ||
2346 | spin_lock_irqsave(io_lock, flags); | |
2347 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
2348 | if (!io_req) { | |
2349 | spin_unlock_irqrestore(io_lock, flags); | |
03298552 HP |
2350 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
2351 | "io_req is null tag 0x%x sc 0x%p\n", tag, sc); | |
5df6d737 AJ |
2352 | goto fnic_device_reset_end; |
2353 | } | |
2354 | io_req->dr_done = NULL; | |
2355 | ||
2356 | status = CMD_LR_STATUS(sc); | |
5df6d737 AJ |
2357 | |
2358 | /* | |
2359 | * If lun reset not completed, bail out with failed. io_req | |
2360 | * gets cleaned up during higher levels of EH | |
2361 | */ | |
2362 | if (status == FCPIO_INVALID_CODE) { | |
67125b02 | 2363 | atomic64_inc(&reset_stats->device_reset_timeouts); |
5df6d737 AJ |
2364 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
2365 | "Device reset timed out\n"); | |
03298552 HP |
2366 | CMD_FLAGS(sc) |= FNIC_DEV_RST_TIMED_OUT; |
2367 | spin_unlock_irqrestore(io_lock, flags); | |
2368 | int_to_scsilun(sc->device->lun, &fc_lun); | |
2369 | /* | |
1259c5dc SB |
2370 | * Issue abort and terminate on device reset request. |
2371 | * If q'ing of terminate fails, retry it after a delay. | |
03298552 HP |
2372 | */ |
2373 | while (1) { | |
2374 | spin_lock_irqsave(io_lock, flags); | |
2375 | if (CMD_FLAGS(sc) & FNIC_DEV_RST_TERM_ISSUED) { | |
2376 | spin_unlock_irqrestore(io_lock, flags); | |
2377 | break; | |
2378 | } | |
2379 | spin_unlock_irqrestore(io_lock, flags); | |
2380 | if (fnic_queue_abort_io_req(fnic, | |
2381 | tag | FNIC_TAG_DEV_RST, | |
2382 | FCPIO_ITMF_ABT_TASK_TERM, | |
2383 | fc_lun.scsi_lun, io_req)) { | |
2384 | wait_for_completion_timeout(&tm_done, | |
2385 | msecs_to_jiffies(FNIC_ABT_TERM_DELAY_TIMEOUT)); | |
2386 | } else { | |
2387 | spin_lock_irqsave(io_lock, flags); | |
2388 | CMD_FLAGS(sc) |= FNIC_DEV_RST_TERM_ISSUED; | |
2389 | CMD_STATE(sc) = FNIC_IOREQ_ABTS_PENDING; | |
2390 | io_req->abts_done = &tm_done; | |
2391 | spin_unlock_irqrestore(io_lock, flags); | |
2392 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
2393 | "Abort and terminate issued on Device reset " | |
2394 | "tag 0x%x sc 0x%p\n", tag, sc); | |
2395 | break; | |
2396 | } | |
2397 | } | |
2398 | while (1) { | |
2399 | spin_lock_irqsave(io_lock, flags); | |
2400 | if (!(CMD_FLAGS(sc) & FNIC_DEV_RST_DONE)) { | |
2401 | spin_unlock_irqrestore(io_lock, flags); | |
2402 | wait_for_completion_timeout(&tm_done, | |
2403 | msecs_to_jiffies(FNIC_LUN_RESET_TIMEOUT)); | |
2404 | break; | |
2405 | } else { | |
2406 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
2407 | io_req->abts_done = NULL; | |
2408 | goto fnic_device_reset_clean; | |
2409 | } | |
2410 | } | |
2411 | } else { | |
2412 | spin_unlock_irqrestore(io_lock, flags); | |
5df6d737 AJ |
2413 | } |
2414 | ||
2415 | /* Completed, but not successful, clean up the io_req, return fail */ | |
2416 | if (status != FCPIO_SUCCESS) { | |
2417 | spin_lock_irqsave(io_lock, flags); | |
2418 | FNIC_SCSI_DBG(KERN_DEBUG, | |
2419 | fnic->lport->host, | |
2420 | "Device reset completed - failed\n"); | |
2421 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
2422 | goto fnic_device_reset_clean; | |
2423 | } | |
2424 | ||
2425 | /* | |
2426 | * Clean up any aborts on this lun that have still not | |
2427 | * completed. If any of these fail, then LUN reset fails. | |
2428 | * clean_pending_aborts cleans all cmds on this lun except | |
2429 | * the lun reset cmd. If all cmds get cleaned, the lun reset | |
2430 | * succeeds | |
2431 | */ | |
a36f5dd0 | 2432 | if (fnic_clean_pending_aborts(fnic, sc, new_sc)) { |
5df6d737 AJ |
2433 | spin_lock_irqsave(io_lock, flags); |
2434 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
2435 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
2436 | "Device reset failed" | |
2437 | " since could not abort all IOs\n"); | |
2438 | goto fnic_device_reset_clean; | |
2439 | } | |
2440 | ||
2441 | /* Clean lun reset command */ | |
2442 | spin_lock_irqsave(io_lock, flags); | |
2443 | io_req = (struct fnic_io_req *)CMD_SP(sc); | |
2444 | if (io_req) | |
2445 | /* Completed, and successful */ | |
2446 | ret = SUCCESS; | |
2447 | ||
2448 | fnic_device_reset_clean: | |
2449 | if (io_req) | |
2450 | CMD_SP(sc) = NULL; | |
2451 | ||
2452 | spin_unlock_irqrestore(io_lock, flags); | |
2453 | ||
2454 | if (io_req) { | |
14eb5d90 | 2455 | start_time = io_req->start_time; |
5df6d737 AJ |
2456 | fnic_release_ioreq_buf(fnic, io_req, sc); |
2457 | mempool_free(io_req, fnic->io_req_pool); | |
2458 | } | |
2459 | ||
2460 | fnic_device_reset_end: | |
e1c9f0cf | 2461 | FNIC_TRACE(fnic_device_reset, sc->device->host->host_no, rq->tag, sc, |
4d7007b4 HP |
2462 | jiffies_to_msecs(jiffies - start_time), |
2463 | 0, ((u64)sc->cmnd[0] << 32 | | |
2464 | (u64)sc->cmnd[2] << 24 | (u64)sc->cmnd[3] << 16 | | |
2465 | (u64)sc->cmnd[4] << 8 | sc->cmnd[5]), | |
2466 | (((u64)CMD_FLAGS(sc) << 32) | CMD_STATE(sc))); | |
2467 | ||
03298552 HP |
2468 | /* free tag if it is allocated */ |
2469 | if (unlikely(tag_gen_flag)) | |
2470 | fnic_scsi_host_end_tag(fnic, sc); | |
2471 | ||
5df6d737 AJ |
2472 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, |
2473 | "Returning from device reset %s\n", | |
2474 | (ret == SUCCESS) ? | |
2475 | "SUCCESS" : "FAILED"); | |
67125b02 HP |
2476 | |
2477 | if (ret == FAILED) | |
2478 | atomic64_inc(&reset_stats->device_reset_failures); | |
2479 | ||
5df6d737 AJ |
2480 | return ret; |
2481 | } | |
2482 | ||
2483 | /* Clean up all IOs, clean up libFC local port */ | |
2484 | int fnic_reset(struct Scsi_Host *shost) | |
2485 | { | |
2486 | struct fc_lport *lp; | |
2487 | struct fnic *fnic; | |
441fbd25 | 2488 | int ret = 0; |
67125b02 | 2489 | struct reset_stats *reset_stats; |
5df6d737 AJ |
2490 | |
2491 | lp = shost_priv(shost); | |
2492 | fnic = lport_priv(lp); | |
67125b02 | 2493 | reset_stats = &fnic->fnic_stats.reset_stats; |
5df6d737 AJ |
2494 | |
2495 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
2496 | "fnic_reset called\n"); | |
2497 | ||
67125b02 HP |
2498 | atomic64_inc(&reset_stats->fnic_resets); |
2499 | ||
5df6d737 AJ |
2500 | /* |
2501 | * Reset local port, this will clean up libFC exchanges, | |
2502 | * reset remote port sessions, and if link is up, begin flogi | |
2503 | */ | |
31c0a631 | 2504 | ret = fc_lport_reset(lp); |
5df6d737 AJ |
2505 | |
2506 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
2507 | "Returning from fnic reset %s\n", | |
441fbd25 | 2508 | (ret == 0) ? |
5df6d737 AJ |
2509 | "SUCCESS" : "FAILED"); |
2510 | ||
67125b02 HP |
2511 | if (ret == 0) |
2512 | atomic64_inc(&reset_stats->fnic_reset_completions); | |
2513 | else | |
2514 | atomic64_inc(&reset_stats->fnic_reset_failures); | |
2515 | ||
5df6d737 AJ |
2516 | return ret; |
2517 | } | |
2518 | ||
2519 | /* | |
2520 | * SCSI Error handling calls driver's eh_host_reset if all prior | |
2521 | * error handling levels return FAILED. If host reset completes | |
2522 | * successfully, and if link is up, then Fabric login begins. | |
2523 | * | |
2524 | * Host Reset is the highest level of error recovery. If this fails, then | |
2525 | * host is offlined by SCSI. | |
2526 | * | |
2527 | */ | |
2528 | int fnic_host_reset(struct scsi_cmnd *sc) | |
2529 | { | |
2530 | int ret; | |
2531 | unsigned long wait_host_tmo; | |
2532 | struct Scsi_Host *shost = sc->device->host; | |
2533 | struct fc_lport *lp = shost_priv(shost); | |
9698b6f4 SK |
2534 | struct fnic *fnic = lport_priv(lp); |
2535 | unsigned long flags; | |
2536 | ||
2537 | spin_lock_irqsave(&fnic->fnic_lock, flags); | |
b91857a5 JY |
2538 | if (!fnic->internal_reset_inprogress) { |
2539 | fnic->internal_reset_inprogress = true; | |
9698b6f4 SK |
2540 | } else { |
2541 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
2542 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
2543 | "host reset in progress skipping another host reset\n"); | |
2544 | return SUCCESS; | |
2545 | } | |
2546 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
5df6d737 AJ |
2547 | |
2548 | /* | |
2549 | * If fnic_reset is successful, wait for fabric login to complete | |
2550 | * scsi-ml tries to send a TUR to every device if host reset is | |
2551 | * successful, so before returning to scsi, fabric should be up | |
2552 | */ | |
441fbd25 | 2553 | ret = (fnic_reset(shost) == 0) ? SUCCESS : FAILED; |
5df6d737 AJ |
2554 | if (ret == SUCCESS) { |
2555 | wait_host_tmo = jiffies + FNIC_HOST_RESET_SETTLE_TIME * HZ; | |
2556 | ret = FAILED; | |
2557 | while (time_before(jiffies, wait_host_tmo)) { | |
2558 | if ((lp->state == LPORT_ST_READY) && | |
2559 | (lp->link_up)) { | |
2560 | ret = SUCCESS; | |
2561 | break; | |
2562 | } | |
2563 | ssleep(1); | |
2564 | } | |
2565 | } | |
2566 | ||
9698b6f4 | 2567 | spin_lock_irqsave(&fnic->fnic_lock, flags); |
b91857a5 | 2568 | fnic->internal_reset_inprogress = false; |
9698b6f4 | 2569 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); |
5df6d737 AJ |
2570 | return ret; |
2571 | } | |
2572 | ||
2573 | /* | |
2574 | * This fxn is called from libFC when host is removed | |
2575 | */ | |
2576 | void fnic_scsi_abort_io(struct fc_lport *lp) | |
2577 | { | |
2578 | int err = 0; | |
2579 | unsigned long flags; | |
2580 | enum fnic_state old_state; | |
2581 | struct fnic *fnic = lport_priv(lp); | |
2582 | DECLARE_COMPLETION_ONSTACK(remove_wait); | |
2583 | ||
2584 | /* Issue firmware reset for fnic, wait for reset to complete */ | |
03298552 | 2585 | retry_fw_reset: |
5df6d737 | 2586 | spin_lock_irqsave(&fnic->fnic_lock, flags); |
f9e2beb9 KTK |
2587 | if (unlikely(fnic->state == FNIC_IN_FC_TRANS_ETH_MODE) && |
2588 | fnic->link_events) { | |
03298552 HP |
2589 | /* fw reset is in progress, poll for its completion */ |
2590 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
2591 | schedule_timeout(msecs_to_jiffies(100)); | |
2592 | goto retry_fw_reset; | |
2593 | } | |
2594 | ||
5df6d737 AJ |
2595 | fnic->remove_wait = &remove_wait; |
2596 | old_state = fnic->state; | |
2597 | fnic->state = FNIC_IN_FC_TRANS_ETH_MODE; | |
78112e55 | 2598 | fnic_update_mac_locked(fnic, fnic->ctlr.ctl_src_addr); |
5df6d737 AJ |
2599 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); |
2600 | ||
2601 | err = fnic_fw_reset_handler(fnic); | |
2602 | if (err) { | |
2603 | spin_lock_irqsave(&fnic->fnic_lock, flags); | |
2604 | if (fnic->state == FNIC_IN_FC_TRANS_ETH_MODE) | |
2605 | fnic->state = old_state; | |
2606 | fnic->remove_wait = NULL; | |
2607 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
2608 | return; | |
2609 | } | |
2610 | ||
2611 | /* Wait for firmware reset to complete */ | |
2612 | wait_for_completion_timeout(&remove_wait, | |
2613 | msecs_to_jiffies(FNIC_RMDEVICE_TIMEOUT)); | |
2614 | ||
2615 | spin_lock_irqsave(&fnic->fnic_lock, flags); | |
2616 | fnic->remove_wait = NULL; | |
2617 | FNIC_SCSI_DBG(KERN_DEBUG, fnic->lport->host, | |
2618 | "fnic_scsi_abort_io %s\n", | |
2619 | (fnic->state == FNIC_IN_ETH_MODE) ? | |
2620 | "SUCCESS" : "FAILED"); | |
2621 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
2622 | ||
2623 | } | |
2624 | ||
2625 | /* | |
2626 | * This fxn called from libFC to clean up driver IO state on link down | |
2627 | */ | |
2628 | void fnic_scsi_cleanup(struct fc_lport *lp) | |
2629 | { | |
2630 | unsigned long flags; | |
2631 | enum fnic_state old_state; | |
2632 | struct fnic *fnic = lport_priv(lp); | |
2633 | ||
2634 | /* issue fw reset */ | |
03298552 | 2635 | retry_fw_reset: |
5df6d737 | 2636 | spin_lock_irqsave(&fnic->fnic_lock, flags); |
03298552 HP |
2637 | if (unlikely(fnic->state == FNIC_IN_FC_TRANS_ETH_MODE)) { |
2638 | /* fw reset is in progress, poll for its completion */ | |
2639 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
2640 | schedule_timeout(msecs_to_jiffies(100)); | |
2641 | goto retry_fw_reset; | |
2642 | } | |
5df6d737 AJ |
2643 | old_state = fnic->state; |
2644 | fnic->state = FNIC_IN_FC_TRANS_ETH_MODE; | |
78112e55 | 2645 | fnic_update_mac_locked(fnic, fnic->ctlr.ctl_src_addr); |
5df6d737 AJ |
2646 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); |
2647 | ||
2648 | if (fnic_fw_reset_handler(fnic)) { | |
2649 | spin_lock_irqsave(&fnic->fnic_lock, flags); | |
2650 | if (fnic->state == FNIC_IN_FC_TRANS_ETH_MODE) | |
2651 | fnic->state = old_state; | |
2652 | spin_unlock_irqrestore(&fnic->fnic_lock, flags); | |
2653 | } | |
2654 | ||
2655 | } | |
2656 | ||
2657 | void fnic_empty_scsi_cleanup(struct fc_lport *lp) | |
2658 | { | |
2659 | } | |
2660 | ||
2661 | void fnic_exch_mgr_reset(struct fc_lport *lp, u32 sid, u32 did) | |
2662 | { | |
2663 | struct fnic *fnic = lport_priv(lp); | |
2664 | ||
2665 | /* Non-zero sid, nothing to do */ | |
2666 | if (sid) | |
2667 | goto call_fc_exch_mgr_reset; | |
2668 | ||
2669 | if (did) { | |
2670 | fnic_rport_exch_reset(fnic, did); | |
2671 | goto call_fc_exch_mgr_reset; | |
2672 | } | |
2673 | ||
2674 | /* | |
2675 | * sid = 0, did = 0 | |
2676 | * link down or device being removed | |
2677 | */ | |
2678 | if (!fnic->in_remove) | |
2679 | fnic_scsi_cleanup(lp); | |
2680 | else | |
2681 | fnic_scsi_abort_io(lp); | |
2682 | ||
2683 | /* call libFC exch mgr reset to reset its exchanges */ | |
2684 | call_fc_exch_mgr_reset: | |
2685 | fc_exch_mgr_reset(lp, sid, did); | |
2686 | ||
2687 | } | |
a0bf1ca2 | 2688 | |
35ffbb60 HR |
2689 | static bool fnic_abts_pending_iter(struct scsi_cmnd *sc, void *data, |
2690 | bool reserved) | |
a0bf1ca2 | 2691 | { |
35ffbb60 HR |
2692 | struct fnic_pending_aborts_iter_data *iter_data = data; |
2693 | struct fnic *fnic = iter_data->fnic; | |
2694 | int cmd_state; | |
a0bf1ca2 HP |
2695 | struct fnic_io_req *io_req; |
2696 | spinlock_t *io_lock; | |
2697 | unsigned long flags; | |
a0bf1ca2 | 2698 | |
35ffbb60 HR |
2699 | /* |
2700 | * ignore this lun reset cmd or cmds that do not belong to | |
2701 | * this lun | |
2702 | */ | |
2703 | if (iter_data->lr_sc && sc == iter_data->lr_sc) | |
2704 | return true; | |
2705 | if (iter_data->lun_dev && sc->device != iter_data->lun_dev) | |
2706 | return true; | |
a0bf1ca2 | 2707 | |
35ffbb60 HR |
2708 | io_lock = fnic_io_lock_hash(fnic, sc); |
2709 | spin_lock_irqsave(io_lock, flags); | |
a0bf1ca2 | 2710 | |
35ffbb60 HR |
2711 | io_req = (struct fnic_io_req *)CMD_SP(sc); |
2712 | if (!io_req) { | |
2713 | spin_unlock_irqrestore(io_lock, flags); | |
2714 | return true; | |
2715 | } | |
a0bf1ca2 | 2716 | |
35ffbb60 HR |
2717 | /* |
2718 | * Found IO that is still pending with firmware and | |
2719 | * belongs to the LUN that we are resetting | |
2720 | */ | |
2721 | FNIC_SCSI_DBG(KERN_INFO, fnic->lport->host, | |
2722 | "Found IO in %s on lun\n", | |
2723 | fnic_ioreq_state_to_str(CMD_STATE(sc))); | |
2724 | cmd_state = CMD_STATE(sc); | |
2725 | spin_unlock_irqrestore(io_lock, flags); | |
2726 | if (cmd_state == FNIC_IOREQ_ABTS_PENDING) | |
2727 | iter_data->ret = 1; | |
a0bf1ca2 | 2728 | |
35ffbb60 HR |
2729 | return iter_data->ret ? false : true; |
2730 | } | |
a0bf1ca2 | 2731 | |
35ffbb60 HR |
2732 | /* |
2733 | * fnic_is_abts_pending() is a helper function that | |
2734 | * walks through tag map to check if there is any IOs pending,if there is one, | |
2735 | * then it returns 1 (true), otherwise 0 (false) | |
2736 | * if @lr_sc is non NULL, then it checks IOs specific to particular LUN, | |
2737 | * otherwise, it checks for all IOs. | |
2738 | */ | |
2739 | int fnic_is_abts_pending(struct fnic *fnic, struct scsi_cmnd *lr_sc) | |
2740 | { | |
2741 | struct fnic_pending_aborts_iter_data iter_data = { | |
2742 | .fnic = fnic, | |
2743 | .lun_dev = NULL, | |
2744 | .ret = 0, | |
2745 | }; | |
a0bf1ca2 | 2746 | |
35ffbb60 HR |
2747 | if (lr_sc) { |
2748 | iter_data.lun_dev = lr_sc->device; | |
2749 | iter_data.lr_sc = lr_sc; | |
a0bf1ca2 HP |
2750 | } |
2751 | ||
35ffbb60 HR |
2752 | /* walk again to check, if IOs are still pending in fw */ |
2753 | scsi_host_busy_iter(fnic->lport->host, | |
2754 | fnic_abts_pending_iter, &iter_data); | |
2755 | ||
2756 | return iter_data.ret; | |
a0bf1ca2 | 2757 | } |