Commit | Line | Data |
---|---|---|
dea3101e | 1 | /******************************************************************* |
2 | * This file is part of the Emulex Linux Device Driver for * | |
c44ce173 | 3 | * Fibre Channel Host Bus Adapters. * |
e47c9093 | 4 | * Copyright (C) 2004-2008 Emulex. All rights reserved. * |
c44ce173 | 5 | * EMULEX and SLI are trademarks of Emulex. * |
dea3101e | 6 | * www.emulex.com * |
c44ce173 | 7 | * Portions Copyright (C) 2004-2005 Christoph Hellwig * |
dea3101e | 8 | * * |
9 | * This program is free software; you can redistribute it and/or * | |
c44ce173 JSEC |
10 | * modify it under the terms of version 2 of the GNU General * |
11 | * Public License as published by the Free Software Foundation. * | |
12 | * This program is distributed in the hope that it will be useful. * | |
13 | * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND * | |
14 | * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, * | |
15 | * FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT, ARE * | |
16 | * DISCLAIMED, EXCEPT TO THE EXTENT THAT SUCH DISCLAIMERS ARE HELD * | |
17 | * TO BE LEGALLY INVALID. See the GNU General Public License for * | |
18 | * more details, a copy of which can be found in the file COPYING * | |
19 | * included with this package. * | |
dea3101e | 20 | *******************************************************************/ |
21 | ||
dea3101e | 22 | #include <linux/pci.h> |
23 | #include <linux/interrupt.h> | |
a90f5684 | 24 | #include <linux/delay.h> |
dea3101e | 25 | |
26 | #include <scsi/scsi.h> | |
27 | #include <scsi/scsi_device.h> | |
28 | #include <scsi/scsi_host.h> | |
29 | #include <scsi/scsi_tcq.h> | |
30 | #include <scsi/scsi_transport_fc.h> | |
31 | ||
32 | #include "lpfc_version.h" | |
33 | #include "lpfc_hw.h" | |
34 | #include "lpfc_sli.h" | |
35 | #include "lpfc_disc.h" | |
36 | #include "lpfc_scsi.h" | |
37 | #include "lpfc.h" | |
38 | #include "lpfc_logmsg.h" | |
39 | #include "lpfc_crtn.h" | |
92d7f7b0 | 40 | #include "lpfc_vport.h" |
dea3101e | 41 | |
42 | #define LPFC_RESET_WAIT 2 | |
43 | #define LPFC_ABORT_WAIT 2 | |
44 | ||
92d7f7b0 JS |
45 | /* |
46 | * This function is called with no lock held when there is a resource | |
47 | * error in driver or in firmware. | |
48 | */ | |
49 | void | |
50 | lpfc_adjust_queue_depth(struct lpfc_hba *phba) | |
51 | { | |
52 | unsigned long flags; | |
5e9d9b82 | 53 | uint32_t evt_posted; |
92d7f7b0 JS |
54 | |
55 | spin_lock_irqsave(&phba->hbalock, flags); | |
56 | atomic_inc(&phba->num_rsrc_err); | |
57 | phba->last_rsrc_error_time = jiffies; | |
58 | ||
59 | if ((phba->last_ramp_down_time + QUEUE_RAMP_DOWN_INTERVAL) > jiffies) { | |
60 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
61 | return; | |
62 | } | |
63 | ||
64 | phba->last_ramp_down_time = jiffies; | |
65 | ||
66 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
67 | ||
68 | spin_lock_irqsave(&phba->pport->work_port_lock, flags); | |
5e9d9b82 JS |
69 | evt_posted = phba->pport->work_port_events & WORKER_RAMP_DOWN_QUEUE; |
70 | if (!evt_posted) | |
92d7f7b0 | 71 | phba->pport->work_port_events |= WORKER_RAMP_DOWN_QUEUE; |
92d7f7b0 JS |
72 | spin_unlock_irqrestore(&phba->pport->work_port_lock, flags); |
73 | ||
5e9d9b82 JS |
74 | if (!evt_posted) |
75 | lpfc_worker_wake_up(phba); | |
92d7f7b0 JS |
76 | return; |
77 | } | |
78 | ||
79 | /* | |
80 | * This function is called with no lock held when there is a successful | |
81 | * SCSI command completion. | |
82 | */ | |
83 | static inline void | |
3de2a653 | 84 | lpfc_rampup_queue_depth(struct lpfc_vport *vport, |
92d7f7b0 JS |
85 | struct scsi_device *sdev) |
86 | { | |
87 | unsigned long flags; | |
3de2a653 | 88 | struct lpfc_hba *phba = vport->phba; |
5e9d9b82 | 89 | uint32_t evt_posted; |
92d7f7b0 JS |
90 | atomic_inc(&phba->num_cmd_success); |
91 | ||
3de2a653 | 92 | if (vport->cfg_lun_queue_depth <= sdev->queue_depth) |
92d7f7b0 | 93 | return; |
92d7f7b0 JS |
94 | spin_lock_irqsave(&phba->hbalock, flags); |
95 | if (((phba->last_ramp_up_time + QUEUE_RAMP_UP_INTERVAL) > jiffies) || | |
96 | ((phba->last_rsrc_error_time + QUEUE_RAMP_UP_INTERVAL ) > jiffies)) { | |
97 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
98 | return; | |
99 | } | |
92d7f7b0 JS |
100 | phba->last_ramp_up_time = jiffies; |
101 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
102 | ||
103 | spin_lock_irqsave(&phba->pport->work_port_lock, flags); | |
5e9d9b82 JS |
104 | evt_posted = phba->pport->work_port_events & WORKER_RAMP_UP_QUEUE; |
105 | if (!evt_posted) | |
92d7f7b0 | 106 | phba->pport->work_port_events |= WORKER_RAMP_UP_QUEUE; |
92d7f7b0 JS |
107 | spin_unlock_irqrestore(&phba->pport->work_port_lock, flags); |
108 | ||
5e9d9b82 JS |
109 | if (!evt_posted) |
110 | lpfc_worker_wake_up(phba); | |
111 | return; | |
92d7f7b0 JS |
112 | } |
113 | ||
114 | void | |
115 | lpfc_ramp_down_queue_handler(struct lpfc_hba *phba) | |
116 | { | |
549e55cd JS |
117 | struct lpfc_vport **vports; |
118 | struct Scsi_Host *shost; | |
92d7f7b0 JS |
119 | struct scsi_device *sdev; |
120 | unsigned long new_queue_depth; | |
121 | unsigned long num_rsrc_err, num_cmd_success; | |
549e55cd | 122 | int i; |
92d7f7b0 JS |
123 | |
124 | num_rsrc_err = atomic_read(&phba->num_rsrc_err); | |
125 | num_cmd_success = atomic_read(&phba->num_cmd_success); | |
126 | ||
549e55cd JS |
127 | vports = lpfc_create_vport_work_array(phba); |
128 | if (vports != NULL) | |
09372820 | 129 | for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) { |
549e55cd JS |
130 | shost = lpfc_shost_from_vport(vports[i]); |
131 | shost_for_each_device(sdev, shost) { | |
92d7f7b0 | 132 | new_queue_depth = |
549e55cd JS |
133 | sdev->queue_depth * num_rsrc_err / |
134 | (num_rsrc_err + num_cmd_success); | |
135 | if (!new_queue_depth) | |
136 | new_queue_depth = sdev->queue_depth - 1; | |
137 | else | |
138 | new_queue_depth = sdev->queue_depth - | |
139 | new_queue_depth; | |
140 | if (sdev->ordered_tags) | |
141 | scsi_adjust_queue_depth(sdev, | |
142 | MSG_ORDERED_TAG, | |
143 | new_queue_depth); | |
144 | else | |
145 | scsi_adjust_queue_depth(sdev, | |
146 | MSG_SIMPLE_TAG, | |
147 | new_queue_depth); | |
148 | } | |
92d7f7b0 | 149 | } |
09372820 | 150 | lpfc_destroy_vport_work_array(phba, vports); |
92d7f7b0 JS |
151 | atomic_set(&phba->num_rsrc_err, 0); |
152 | atomic_set(&phba->num_cmd_success, 0); | |
153 | } | |
154 | ||
155 | void | |
156 | lpfc_ramp_up_queue_handler(struct lpfc_hba *phba) | |
157 | { | |
549e55cd JS |
158 | struct lpfc_vport **vports; |
159 | struct Scsi_Host *shost; | |
92d7f7b0 | 160 | struct scsi_device *sdev; |
549e55cd JS |
161 | int i; |
162 | ||
163 | vports = lpfc_create_vport_work_array(phba); | |
164 | if (vports != NULL) | |
09372820 | 165 | for(i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) { |
549e55cd JS |
166 | shost = lpfc_shost_from_vport(vports[i]); |
167 | shost_for_each_device(sdev, shost) { | |
97eab634 JS |
168 | if (vports[i]->cfg_lun_queue_depth <= |
169 | sdev->queue_depth) | |
170 | continue; | |
549e55cd JS |
171 | if (sdev->ordered_tags) |
172 | scsi_adjust_queue_depth(sdev, | |
173 | MSG_ORDERED_TAG, | |
174 | sdev->queue_depth+1); | |
175 | else | |
176 | scsi_adjust_queue_depth(sdev, | |
177 | MSG_SIMPLE_TAG, | |
178 | sdev->queue_depth+1); | |
179 | } | |
92d7f7b0 | 180 | } |
09372820 | 181 | lpfc_destroy_vport_work_array(phba, vports); |
92d7f7b0 JS |
182 | atomic_set(&phba->num_rsrc_err, 0); |
183 | atomic_set(&phba->num_cmd_success, 0); | |
184 | } | |
185 | ||
a8e497d5 JS |
186 | /** |
187 | * lpfc_scsi_dev_block: set all scsi hosts to block state. | |
188 | * @phba: Pointer to HBA context object. | |
189 | * | |
190 | * This function walks vport list and set each SCSI host to block state | |
191 | * by invoking fc_remote_port_delete() routine. This function is invoked | |
192 | * with EEH when device's PCI slot has been permanently disabled. | |
193 | **/ | |
194 | void | |
195 | lpfc_scsi_dev_block(struct lpfc_hba *phba) | |
196 | { | |
197 | struct lpfc_vport **vports; | |
198 | struct Scsi_Host *shost; | |
199 | struct scsi_device *sdev; | |
200 | struct fc_rport *rport; | |
201 | int i; | |
202 | ||
203 | vports = lpfc_create_vport_work_array(phba); | |
204 | if (vports != NULL) | |
205 | for (i = 0; i <= phba->max_vpi && vports[i] != NULL; i++) { | |
206 | shost = lpfc_shost_from_vport(vports[i]); | |
207 | shost_for_each_device(sdev, shost) { | |
208 | rport = starget_to_rport(scsi_target(sdev)); | |
209 | fc_remote_port_delete(rport); | |
210 | } | |
211 | } | |
212 | lpfc_destroy_vport_work_array(phba, vports); | |
213 | } | |
214 | ||
dea3101e | 215 | /* |
216 | * This routine allocates a scsi buffer, which contains all the necessary | |
217 | * information needed to initiate a SCSI I/O. The non-DMAable buffer region | |
218 | * contains information to build the IOCB. The DMAable region contains | |
219 | * memory for the FCP CMND, FCP RSP, and the inital BPL. In addition to | |
220 | * allocating memeory, the FCP CMND and FCP RSP BDEs are setup in the BPL | |
221 | * and the BPL BDE is setup in the IOCB. | |
222 | */ | |
223 | static struct lpfc_scsi_buf * | |
2e0fef85 | 224 | lpfc_new_scsi_buf(struct lpfc_vport *vport) |
dea3101e | 225 | { |
2e0fef85 | 226 | struct lpfc_hba *phba = vport->phba; |
dea3101e | 227 | struct lpfc_scsi_buf *psb; |
228 | struct ulp_bde64 *bpl; | |
229 | IOCB_t *iocb; | |
34b02dcd JS |
230 | dma_addr_t pdma_phys_fcp_cmd; |
231 | dma_addr_t pdma_phys_fcp_rsp; | |
232 | dma_addr_t pdma_phys_bpl; | |
604a3e30 | 233 | uint16_t iotag; |
dea3101e | 234 | |
bbfbbbc1 | 235 | psb = kzalloc(sizeof(struct lpfc_scsi_buf), GFP_KERNEL); |
dea3101e | 236 | if (!psb) |
237 | return NULL; | |
dea3101e | 238 | |
239 | /* | |
240 | * Get memory from the pci pool to map the virt space to pci bus space | |
241 | * for an I/O. The DMA buffer includes space for the struct fcp_cmnd, | |
242 | * struct fcp_rsp and the number of bde's necessary to support the | |
243 | * sg_tablesize. | |
244 | */ | |
245 | psb->data = pci_pool_alloc(phba->lpfc_scsi_dma_buf_pool, GFP_KERNEL, | |
246 | &psb->dma_handle); | |
247 | if (!psb->data) { | |
248 | kfree(psb); | |
249 | return NULL; | |
250 | } | |
251 | ||
252 | /* Initialize virtual ptrs to dma_buf region. */ | |
253 | memset(psb->data, 0, phba->cfg_sg_dma_buf_size); | |
254 | ||
604a3e30 JB |
255 | /* Allocate iotag for psb->cur_iocbq. */ |
256 | iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq); | |
257 | if (iotag == 0) { | |
258 | pci_pool_free(phba->lpfc_scsi_dma_buf_pool, | |
259 | psb->data, psb->dma_handle); | |
260 | kfree (psb); | |
261 | return NULL; | |
262 | } | |
0bd4ca25 | 263 | psb->cur_iocbq.iocb_flag |= LPFC_IO_FCP; |
604a3e30 | 264 | |
dea3101e | 265 | psb->fcp_cmnd = psb->data; |
266 | psb->fcp_rsp = psb->data + sizeof(struct fcp_cmnd); | |
267 | psb->fcp_bpl = psb->data + sizeof(struct fcp_cmnd) + | |
268 | sizeof(struct fcp_rsp); | |
269 | ||
270 | /* Initialize local short-hand pointers. */ | |
271 | bpl = psb->fcp_bpl; | |
34b02dcd JS |
272 | pdma_phys_fcp_cmd = psb->dma_handle; |
273 | pdma_phys_fcp_rsp = psb->dma_handle + sizeof(struct fcp_cmnd); | |
274 | pdma_phys_bpl = psb->dma_handle + sizeof(struct fcp_cmnd) + | |
275 | sizeof(struct fcp_rsp); | |
dea3101e | 276 | |
277 | /* | |
278 | * The first two bdes are the FCP_CMD and FCP_RSP. The balance are sg | |
279 | * list bdes. Initialize the first two and leave the rest for | |
280 | * queuecommand. | |
281 | */ | |
34b02dcd JS |
282 | bpl[0].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_cmd)); |
283 | bpl[0].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_cmd)); | |
284 | bpl[0].tus.f.bdeSize = sizeof(struct fcp_cmnd); | |
285 | bpl[0].tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
286 | bpl[0].tus.w = le32_to_cpu(bpl->tus.w); | |
dea3101e | 287 | |
288 | /* Setup the physical region for the FCP RSP */ | |
34b02dcd JS |
289 | bpl[1].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_rsp)); |
290 | bpl[1].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_rsp)); | |
291 | bpl[1].tus.f.bdeSize = sizeof(struct fcp_rsp); | |
292 | bpl[1].tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
293 | bpl[1].tus.w = le32_to_cpu(bpl->tus.w); | |
dea3101e | 294 | |
295 | /* | |
296 | * Since the IOCB for the FCP I/O is built into this lpfc_scsi_buf, | |
297 | * initialize it with all known data now. | |
298 | */ | |
dea3101e | 299 | iocb = &psb->cur_iocbq.iocb; |
300 | iocb->un.fcpi64.bdl.ulpIoTag32 = 0; | |
34b02dcd JS |
301 | if (phba->sli_rev == 3) { |
302 | /* fill in immediate fcp command BDE */ | |
303 | iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_IMMED; | |
304 | iocb->un.fcpi64.bdl.bdeSize = sizeof(struct fcp_cmnd); | |
305 | iocb->un.fcpi64.bdl.addrLow = offsetof(IOCB_t, | |
306 | unsli3.fcp_ext.icd); | |
307 | iocb->un.fcpi64.bdl.addrHigh = 0; | |
308 | iocb->ulpBdeCount = 0; | |
309 | iocb->ulpLe = 0; | |
310 | /* fill in responce BDE */ | |
311 | iocb->unsli3.fcp_ext.rbde.tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
312 | iocb->unsli3.fcp_ext.rbde.tus.f.bdeSize = | |
313 | sizeof(struct fcp_rsp); | |
314 | iocb->unsli3.fcp_ext.rbde.addrLow = | |
315 | putPaddrLow(pdma_phys_fcp_rsp); | |
316 | iocb->unsli3.fcp_ext.rbde.addrHigh = | |
317 | putPaddrHigh(pdma_phys_fcp_rsp); | |
318 | } else { | |
319 | iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BLP_64; | |
320 | iocb->un.fcpi64.bdl.bdeSize = (2 * sizeof(struct ulp_bde64)); | |
321 | iocb->un.fcpi64.bdl.addrLow = putPaddrLow(pdma_phys_bpl); | |
322 | iocb->un.fcpi64.bdl.addrHigh = putPaddrHigh(pdma_phys_bpl); | |
323 | iocb->ulpBdeCount = 1; | |
324 | iocb->ulpLe = 1; | |
325 | } | |
dea3101e | 326 | iocb->ulpClass = CLASS3; |
327 | ||
328 | return psb; | |
329 | } | |
330 | ||
455c53ec | 331 | static struct lpfc_scsi_buf* |
875fbdfe | 332 | lpfc_get_scsi_buf(struct lpfc_hba * phba) |
dea3101e | 333 | { |
0bd4ca25 JSEC |
334 | struct lpfc_scsi_buf * lpfc_cmd = NULL; |
335 | struct list_head *scsi_buf_list = &phba->lpfc_scsi_buf_list; | |
875fbdfe | 336 | unsigned long iflag = 0; |
0bd4ca25 | 337 | |
875fbdfe | 338 | spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag); |
0bd4ca25 | 339 | list_remove_head(scsi_buf_list, lpfc_cmd, struct lpfc_scsi_buf, list); |
1dcb58e5 JS |
340 | if (lpfc_cmd) { |
341 | lpfc_cmd->seg_cnt = 0; | |
342 | lpfc_cmd->nonsg_phys = 0; | |
343 | } | |
875fbdfe | 344 | spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag); |
0bd4ca25 JSEC |
345 | return lpfc_cmd; |
346 | } | |
dea3101e | 347 | |
0bd4ca25 | 348 | static void |
92d7f7b0 | 349 | lpfc_release_scsi_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb) |
0bd4ca25 | 350 | { |
875fbdfe | 351 | unsigned long iflag = 0; |
dea3101e | 352 | |
875fbdfe | 353 | spin_lock_irqsave(&phba->scsi_buf_list_lock, iflag); |
0bd4ca25 | 354 | psb->pCmd = NULL; |
dea3101e | 355 | list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list); |
875fbdfe | 356 | spin_unlock_irqrestore(&phba->scsi_buf_list_lock, iflag); |
dea3101e | 357 | } |
358 | ||
359 | static int | |
92d7f7b0 | 360 | lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) |
dea3101e | 361 | { |
362 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; | |
363 | struct scatterlist *sgel = NULL; | |
364 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
365 | struct ulp_bde64 *bpl = lpfc_cmd->fcp_bpl; | |
366 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; | |
34b02dcd | 367 | struct ulp_bde64 *data_bde = iocb_cmd->unsli3.fcp_ext.dbde; |
dea3101e | 368 | dma_addr_t physaddr; |
34b02dcd | 369 | uint32_t num_bde = 0; |
a0b4f78f | 370 | int nseg, datadir = scsi_cmnd->sc_data_direction; |
dea3101e | 371 | |
372 | /* | |
373 | * There are three possibilities here - use scatter-gather segment, use | |
374 | * the single mapping, or neither. Start the lpfc command prep by | |
375 | * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first | |
376 | * data bde entry. | |
377 | */ | |
378 | bpl += 2; | |
c59fd9eb | 379 | if (scsi_sg_count(scsi_cmnd)) { |
dea3101e | 380 | /* |
381 | * The driver stores the segment count returned from pci_map_sg | |
382 | * because this a count of dma-mappings used to map the use_sg | |
383 | * pages. They are not guaranteed to be the same for those | |
384 | * architectures that implement an IOMMU. | |
385 | */ | |
dea3101e | 386 | |
c59fd9eb FT |
387 | nseg = dma_map_sg(&phba->pcidev->dev, scsi_sglist(scsi_cmnd), |
388 | scsi_sg_count(scsi_cmnd), datadir); | |
389 | if (unlikely(!nseg)) | |
390 | return 1; | |
391 | ||
a0b4f78f | 392 | lpfc_cmd->seg_cnt = nseg; |
dea3101e | 393 | if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { |
394 | printk(KERN_ERR "%s: Too many sg segments from " | |
395 | "dma_map_sg. Config %d, seg_cnt %d", | |
cadbd4a5 | 396 | __func__, phba->cfg_sg_seg_cnt, |
dea3101e | 397 | lpfc_cmd->seg_cnt); |
a0b4f78f | 398 | scsi_dma_unmap(scsi_cmnd); |
dea3101e | 399 | return 1; |
400 | } | |
401 | ||
402 | /* | |
403 | * The driver established a maximum scatter-gather segment count | |
404 | * during probe that limits the number of sg elements in any | |
405 | * single scsi command. Just run through the seg_cnt and format | |
406 | * the bde's. | |
34b02dcd JS |
407 | * When using SLI-3 the driver will try to fit all the BDEs into |
408 | * the IOCB. If it can't then the BDEs get added to a BPL as it | |
409 | * does for SLI-2 mode. | |
dea3101e | 410 | */ |
34b02dcd | 411 | scsi_for_each_sg(scsi_cmnd, sgel, nseg, num_bde) { |
dea3101e | 412 | physaddr = sg_dma_address(sgel); |
34b02dcd JS |
413 | if (phba->sli_rev == 3 && |
414 | nseg <= LPFC_EXT_DATA_BDE_COUNT) { | |
415 | data_bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
416 | data_bde->tus.f.bdeSize = sg_dma_len(sgel); | |
417 | data_bde->addrLow = putPaddrLow(physaddr); | |
418 | data_bde->addrHigh = putPaddrHigh(physaddr); | |
419 | data_bde++; | |
420 | } else { | |
421 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
422 | bpl->tus.f.bdeSize = sg_dma_len(sgel); | |
423 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
424 | bpl->addrLow = | |
425 | le32_to_cpu(putPaddrLow(physaddr)); | |
426 | bpl->addrHigh = | |
427 | le32_to_cpu(putPaddrHigh(physaddr)); | |
428 | bpl++; | |
429 | } | |
dea3101e | 430 | } |
c59fd9eb | 431 | } |
dea3101e | 432 | |
433 | /* | |
434 | * Finish initializing those IOCB fields that are dependent on the | |
34b02dcd JS |
435 | * scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is |
436 | * explicitly reinitialized and for SLI-3 the extended bde count is | |
437 | * explicitly reinitialized since all iocb memory resources are reused. | |
dea3101e | 438 | */ |
34b02dcd JS |
439 | if (phba->sli_rev == 3) { |
440 | if (num_bde > LPFC_EXT_DATA_BDE_COUNT) { | |
441 | /* | |
442 | * The extended IOCB format can only fit 3 BDE or a BPL. | |
443 | * This I/O has more than 3 BDE so the 1st data bde will | |
444 | * be a BPL that is filled in here. | |
445 | */ | |
446 | physaddr = lpfc_cmd->dma_handle; | |
447 | data_bde->tus.f.bdeFlags = BUFF_TYPE_BLP_64; | |
448 | data_bde->tus.f.bdeSize = (num_bde * | |
449 | sizeof(struct ulp_bde64)); | |
450 | physaddr += (sizeof(struct fcp_cmnd) + | |
451 | sizeof(struct fcp_rsp) + | |
452 | (2 * sizeof(struct ulp_bde64))); | |
453 | data_bde->addrHigh = putPaddrHigh(physaddr); | |
454 | data_bde->addrLow = putPaddrLow(physaddr); | |
455 | /* ebde count includes the responce bde and data bpl */ | |
456 | iocb_cmd->unsli3.fcp_ext.ebde_count = 2; | |
457 | } else { | |
458 | /* ebde count includes the responce bde and data bdes */ | |
459 | iocb_cmd->unsli3.fcp_ext.ebde_count = (num_bde + 1); | |
460 | } | |
461 | } else { | |
462 | iocb_cmd->un.fcpi64.bdl.bdeSize = | |
463 | ((num_bde + 2) * sizeof(struct ulp_bde64)); | |
464 | } | |
09372820 | 465 | fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd)); |
dea3101e | 466 | return 0; |
467 | } | |
468 | ||
bcf4dbfa JS |
469 | static void |
470 | lpfc_scsi_unprep_dma_buf(struct lpfc_hba * phba, struct lpfc_scsi_buf * psb) | |
471 | { | |
472 | /* | |
473 | * There are only two special cases to consider. (1) the scsi command | |
474 | * requested scatter-gather usage or (2) the scsi command allocated | |
475 | * a request buffer, but did not request use_sg. There is a third | |
476 | * case, but it does not require resource deallocation. | |
477 | */ | |
a0b4f78f FT |
478 | if (psb->seg_cnt > 0) |
479 | scsi_dma_unmap(psb->pCmd); | |
bcf4dbfa JS |
480 | } |
481 | ||
dea3101e | 482 | static void |
2e0fef85 JS |
483 | lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, |
484 | struct lpfc_iocbq *rsp_iocb) | |
dea3101e | 485 | { |
486 | struct scsi_cmnd *cmnd = lpfc_cmd->pCmd; | |
487 | struct fcp_cmnd *fcpcmd = lpfc_cmd->fcp_cmnd; | |
488 | struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp; | |
7054a606 | 489 | uint32_t fcpi_parm = rsp_iocb->iocb.un.fcpi.fcpi_parm; |
dea3101e | 490 | uint32_t resp_info = fcprsp->rspStatus2; |
491 | uint32_t scsi_status = fcprsp->rspStatus3; | |
c7743956 | 492 | uint32_t *lp; |
dea3101e | 493 | uint32_t host_status = DID_OK; |
494 | uint32_t rsplen = 0; | |
c7743956 | 495 | uint32_t logit = LOG_FCP | LOG_FCP_ERROR; |
dea3101e | 496 | |
497 | /* | |
498 | * If this is a task management command, there is no | |
499 | * scsi packet associated with this lpfc_cmd. The driver | |
500 | * consumes it. | |
501 | */ | |
502 | if (fcpcmd->fcpCntl2) { | |
503 | scsi_status = 0; | |
504 | goto out; | |
505 | } | |
506 | ||
c7743956 JS |
507 | if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen) { |
508 | uint32_t snslen = be32_to_cpu(fcprsp->rspSnsLen); | |
509 | if (snslen > SCSI_SENSE_BUFFERSIZE) | |
510 | snslen = SCSI_SENSE_BUFFERSIZE; | |
511 | ||
512 | if (resp_info & RSP_LEN_VALID) | |
513 | rsplen = be32_to_cpu(fcprsp->rspRspLen); | |
514 | memcpy(cmnd->sense_buffer, &fcprsp->rspInfo0 + rsplen, snslen); | |
515 | } | |
516 | lp = (uint32_t *)cmnd->sense_buffer; | |
517 | ||
518 | if (!scsi_status && (resp_info & RESID_UNDER)) | |
519 | logit = LOG_FCP; | |
520 | ||
e8b62011 JS |
521 | lpfc_printf_vlog(vport, KERN_WARNING, logit, |
522 | "0730 FCP command x%x failed: x%x SNS x%x x%x " | |
523 | "Data: x%x x%x x%x x%x x%x\n", | |
524 | cmnd->cmnd[0], scsi_status, | |
525 | be32_to_cpu(*lp), be32_to_cpu(*(lp + 3)), resp_info, | |
526 | be32_to_cpu(fcprsp->rspResId), | |
527 | be32_to_cpu(fcprsp->rspSnsLen), | |
528 | be32_to_cpu(fcprsp->rspRspLen), | |
529 | fcprsp->rspInfo3); | |
dea3101e | 530 | |
531 | if (resp_info & RSP_LEN_VALID) { | |
532 | rsplen = be32_to_cpu(fcprsp->rspRspLen); | |
533 | if ((rsplen != 0 && rsplen != 4 && rsplen != 8) || | |
534 | (fcprsp->rspInfo3 != RSP_NO_FAILURE)) { | |
535 | host_status = DID_ERROR; | |
536 | goto out; | |
537 | } | |
538 | } | |
539 | ||
a0b4f78f | 540 | scsi_set_resid(cmnd, 0); |
dea3101e | 541 | if (resp_info & RESID_UNDER) { |
a0b4f78f | 542 | scsi_set_resid(cmnd, be32_to_cpu(fcprsp->rspResId)); |
dea3101e | 543 | |
e8b62011 JS |
544 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
545 | "0716 FCP Read Underrun, expected %d, " | |
546 | "residual %d Data: x%x x%x x%x\n", | |
547 | be32_to_cpu(fcpcmd->fcpDl), | |
548 | scsi_get_resid(cmnd), fcpi_parm, cmnd->cmnd[0], | |
549 | cmnd->underflow); | |
dea3101e | 550 | |
7054a606 JS |
551 | /* |
552 | * If there is an under run check if under run reported by | |
553 | * storage array is same as the under run reported by HBA. | |
554 | * If this is not same, there is a dropped frame. | |
555 | */ | |
556 | if ((cmnd->sc_data_direction == DMA_FROM_DEVICE) && | |
557 | fcpi_parm && | |
a0b4f78f | 558 | (scsi_get_resid(cmnd) != fcpi_parm)) { |
e8b62011 JS |
559 | lpfc_printf_vlog(vport, KERN_WARNING, |
560 | LOG_FCP | LOG_FCP_ERROR, | |
561 | "0735 FCP Read Check Error " | |
562 | "and Underrun Data: x%x x%x x%x x%x\n", | |
563 | be32_to_cpu(fcpcmd->fcpDl), | |
564 | scsi_get_resid(cmnd), fcpi_parm, | |
565 | cmnd->cmnd[0]); | |
a0b4f78f | 566 | scsi_set_resid(cmnd, scsi_bufflen(cmnd)); |
7054a606 JS |
567 | host_status = DID_ERROR; |
568 | } | |
dea3101e | 569 | /* |
570 | * The cmnd->underflow is the minimum number of bytes that must | |
571 | * be transfered for this command. Provided a sense condition | |
572 | * is not present, make sure the actual amount transferred is at | |
573 | * least the underflow value or fail. | |
574 | */ | |
575 | if (!(resp_info & SNS_LEN_VALID) && | |
576 | (scsi_status == SAM_STAT_GOOD) && | |
a0b4f78f FT |
577 | (scsi_bufflen(cmnd) - scsi_get_resid(cmnd) |
578 | < cmnd->underflow)) { | |
e8b62011 JS |
579 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
580 | "0717 FCP command x%x residual " | |
581 | "underrun converted to error " | |
582 | "Data: x%x x%x x%x\n", | |
66dbfbe6 | 583 | cmnd->cmnd[0], scsi_bufflen(cmnd), |
e8b62011 | 584 | scsi_get_resid(cmnd), cmnd->underflow); |
dea3101e | 585 | host_status = DID_ERROR; |
586 | } | |
587 | } else if (resp_info & RESID_OVER) { | |
e8b62011 JS |
588 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
589 | "0720 FCP command x%x residual overrun error. " | |
590 | "Data: x%x x%x \n", cmnd->cmnd[0], | |
591 | scsi_bufflen(cmnd), scsi_get_resid(cmnd)); | |
dea3101e | 592 | host_status = DID_ERROR; |
593 | ||
594 | /* | |
595 | * Check SLI validation that all the transfer was actually done | |
596 | * (fcpi_parm should be zero). Apply check only to reads. | |
597 | */ | |
598 | } else if ((scsi_status == SAM_STAT_GOOD) && fcpi_parm && | |
599 | (cmnd->sc_data_direction == DMA_FROM_DEVICE)) { | |
e8b62011 JS |
600 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP | LOG_FCP_ERROR, |
601 | "0734 FCP Read Check Error Data: " | |
602 | "x%x x%x x%x x%x\n", | |
603 | be32_to_cpu(fcpcmd->fcpDl), | |
604 | be32_to_cpu(fcprsp->rspResId), | |
605 | fcpi_parm, cmnd->cmnd[0]); | |
dea3101e | 606 | host_status = DID_ERROR; |
a0b4f78f | 607 | scsi_set_resid(cmnd, scsi_bufflen(cmnd)); |
dea3101e | 608 | } |
609 | ||
610 | out: | |
611 | cmnd->result = ScsiResult(host_status, scsi_status); | |
612 | } | |
613 | ||
614 | static void | |
615 | lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn, | |
616 | struct lpfc_iocbq *pIocbOut) | |
617 | { | |
618 | struct lpfc_scsi_buf *lpfc_cmd = | |
619 | (struct lpfc_scsi_buf *) pIocbIn->context1; | |
2e0fef85 | 620 | struct lpfc_vport *vport = pIocbIn->vport; |
dea3101e | 621 | struct lpfc_rport_data *rdata = lpfc_cmd->rdata; |
622 | struct lpfc_nodelist *pnode = rdata->pnode; | |
623 | struct scsi_cmnd *cmd = lpfc_cmd->pCmd; | |
445cf4f4 JSEC |
624 | int result; |
625 | struct scsi_device *sdev, *tmp_sdev; | |
626 | int depth = 0; | |
fa61a54e | 627 | unsigned long flags; |
dea3101e | 628 | |
629 | lpfc_cmd->result = pIocbOut->iocb.un.ulpWord[4]; | |
630 | lpfc_cmd->status = pIocbOut->iocb.ulpStatus; | |
631 | ||
632 | if (lpfc_cmd->status) { | |
633 | if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT && | |
634 | (lpfc_cmd->result & IOERR_DRVR_MASK)) | |
635 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; | |
636 | else if (lpfc_cmd->status >= IOSTAT_CNT) | |
637 | lpfc_cmd->status = IOSTAT_DEFAULT; | |
638 | ||
e8b62011 JS |
639 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
640 | "0729 FCP cmd x%x failed <%d/%d> " | |
641 | "status: x%x result: x%x Data: x%x x%x\n", | |
642 | cmd->cmnd[0], | |
643 | cmd->device ? cmd->device->id : 0xffff, | |
644 | cmd->device ? cmd->device->lun : 0xffff, | |
645 | lpfc_cmd->status, lpfc_cmd->result, | |
646 | pIocbOut->iocb.ulpContext, | |
647 | lpfc_cmd->cur_iocbq.iocb.ulpIoTag); | |
dea3101e | 648 | |
649 | switch (lpfc_cmd->status) { | |
650 | case IOSTAT_FCP_RSP_ERROR: | |
651 | /* Call FCP RSP handler to determine result */ | |
2e0fef85 | 652 | lpfc_handle_fcp_err(vport, lpfc_cmd, pIocbOut); |
dea3101e | 653 | break; |
654 | case IOSTAT_NPORT_BSY: | |
655 | case IOSTAT_FABRIC_BSY: | |
0f1f53a7 | 656 | cmd->result = ScsiResult(DID_TRANSPORT_DISRUPTED, 0); |
dea3101e | 657 | break; |
92d7f7b0 | 658 | case IOSTAT_LOCAL_REJECT: |
d7c255b2 | 659 | if (lpfc_cmd->result == IOERR_INVALID_RPI || |
92d7f7b0 | 660 | lpfc_cmd->result == IOERR_NO_RESOURCES || |
d7c255b2 | 661 | lpfc_cmd->result == IOERR_ABORT_REQUESTED) { |
92d7f7b0 | 662 | cmd->result = ScsiResult(DID_REQUEUE, 0); |
58da1ffb JS |
663 | break; |
664 | } /* else: fall through */ | |
dea3101e | 665 | default: |
666 | cmd->result = ScsiResult(DID_ERROR, 0); | |
667 | break; | |
668 | } | |
669 | ||
58da1ffb | 670 | if (!pnode || !NLP_CHK_NODE_ACT(pnode) |
19a7b4ae | 671 | || (pnode->nlp_state != NLP_STE_MAPPED_NODE)) |
0f1f53a7 JS |
672 | cmd->result = ScsiResult(DID_TRANSPORT_DISRUPTED, |
673 | SAM_STAT_BUSY); | |
dea3101e | 674 | } else { |
675 | cmd->result = ScsiResult(DID_OK, 0); | |
676 | } | |
677 | ||
678 | if (cmd->result || lpfc_cmd->fcp_rsp->rspSnsLen) { | |
679 | uint32_t *lp = (uint32_t *)cmd->sense_buffer; | |
680 | ||
e8b62011 JS |
681 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
682 | "0710 Iodone <%d/%d> cmd %p, error " | |
683 | "x%x SNS x%x x%x Data: x%x x%x\n", | |
684 | cmd->device->id, cmd->device->lun, cmd, | |
685 | cmd->result, *lp, *(lp + 3), cmd->retries, | |
686 | scsi_get_resid(cmd)); | |
dea3101e | 687 | } |
688 | ||
445cf4f4 JSEC |
689 | result = cmd->result; |
690 | sdev = cmd->device; | |
1dcb58e5 | 691 | lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd); |
0bd4ca25 JSEC |
692 | cmd->scsi_done(cmd); |
693 | ||
b808608b | 694 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { |
fa61a54e JS |
695 | /* |
696 | * If there is a thread waiting for command completion | |
697 | * wake up the thread. | |
698 | */ | |
699 | spin_lock_irqsave(sdev->host->host_lock, flags); | |
495a714c | 700 | lpfc_cmd->pCmd = NULL; |
fa61a54e JS |
701 | if (lpfc_cmd->waitq) |
702 | wake_up(lpfc_cmd->waitq); | |
703 | spin_unlock_irqrestore(sdev->host->host_lock, flags); | |
b808608b JW |
704 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
705 | return; | |
706 | } | |
707 | ||
92d7f7b0 JS |
708 | |
709 | if (!result) | |
3de2a653 | 710 | lpfc_rampup_queue_depth(vport, sdev); |
92d7f7b0 | 711 | |
58da1ffb | 712 | if (!result && pnode && NLP_CHK_NODE_ACT(pnode) && |
445cf4f4 JSEC |
713 | ((jiffies - pnode->last_ramp_up_time) > |
714 | LPFC_Q_RAMP_UP_INTERVAL * HZ) && | |
715 | ((jiffies - pnode->last_q_full_time) > | |
716 | LPFC_Q_RAMP_UP_INTERVAL * HZ) && | |
3de2a653 | 717 | (vport->cfg_lun_queue_depth > sdev->queue_depth)) { |
445cf4f4 | 718 | shost_for_each_device(tmp_sdev, sdev->host) { |
3de2a653 | 719 | if (vport->cfg_lun_queue_depth > tmp_sdev->queue_depth){ |
445cf4f4 JSEC |
720 | if (tmp_sdev->id != sdev->id) |
721 | continue; | |
722 | if (tmp_sdev->ordered_tags) | |
723 | scsi_adjust_queue_depth(tmp_sdev, | |
724 | MSG_ORDERED_TAG, | |
725 | tmp_sdev->queue_depth+1); | |
726 | else | |
727 | scsi_adjust_queue_depth(tmp_sdev, | |
728 | MSG_SIMPLE_TAG, | |
729 | tmp_sdev->queue_depth+1); | |
730 | ||
731 | pnode->last_ramp_up_time = jiffies; | |
732 | } | |
733 | } | |
734 | } | |
735 | ||
736 | /* | |
737 | * Check for queue full. If the lun is reporting queue full, then | |
738 | * back off the lun queue depth to prevent target overloads. | |
739 | */ | |
58da1ffb JS |
740 | if (result == SAM_STAT_TASK_SET_FULL && pnode && |
741 | NLP_CHK_NODE_ACT(pnode)) { | |
445cf4f4 JSEC |
742 | pnode->last_q_full_time = jiffies; |
743 | ||
744 | shost_for_each_device(tmp_sdev, sdev->host) { | |
745 | if (tmp_sdev->id != sdev->id) | |
746 | continue; | |
747 | depth = scsi_track_queue_full(tmp_sdev, | |
748 | tmp_sdev->queue_depth - 1); | |
749 | } | |
750 | /* | |
2e0fef85 | 751 | * The queue depth cannot be lowered any more. |
445cf4f4 JSEC |
752 | * Modify the returned error code to store |
753 | * the final depth value set by | |
754 | * scsi_track_queue_full. | |
755 | */ | |
756 | if (depth == -1) | |
757 | depth = sdev->host->cmd_per_lun; | |
758 | ||
759 | if (depth) { | |
e8b62011 JS |
760 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
761 | "0711 detected queue full - lun queue " | |
762 | "depth adjusted to %d.\n", depth); | |
445cf4f4 JSEC |
763 | } |
764 | } | |
765 | ||
fa61a54e JS |
766 | /* |
767 | * If there is a thread waiting for command completion | |
768 | * wake up the thread. | |
769 | */ | |
770 | spin_lock_irqsave(sdev->host->host_lock, flags); | |
495a714c | 771 | lpfc_cmd->pCmd = NULL; |
fa61a54e JS |
772 | if (lpfc_cmd->waitq) |
773 | wake_up(lpfc_cmd->waitq); | |
774 | spin_unlock_irqrestore(sdev->host->host_lock, flags); | |
775 | ||
0bd4ca25 | 776 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
dea3101e | 777 | } |
778 | ||
34b02dcd JS |
779 | /** |
780 | * lpfc_fcpcmd_to_iocb - copy the fcp_cmd data into the IOCB. | |
781 | * @data: A pointer to the immediate command data portion of the IOCB. | |
782 | * @fcp_cmnd: The FCP Command that is provided by the SCSI layer. | |
783 | * | |
784 | * The routine copies the entire FCP command from @fcp_cmnd to @data while | |
785 | * byte swapping the data to big endian format for transmission on the wire. | |
786 | **/ | |
787 | static void | |
788 | lpfc_fcpcmd_to_iocb(uint8_t *data, struct fcp_cmnd *fcp_cmnd) | |
789 | { | |
790 | int i, j; | |
791 | for (i = 0, j = 0; i < sizeof(struct fcp_cmnd); | |
792 | i += sizeof(uint32_t), j++) { | |
793 | ((uint32_t *)data)[j] = cpu_to_be32(((uint32_t *)fcp_cmnd)[j]); | |
794 | } | |
795 | } | |
796 | ||
dea3101e | 797 | static void |
2e0fef85 JS |
798 | lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, |
799 | struct lpfc_nodelist *pnode) | |
dea3101e | 800 | { |
2e0fef85 | 801 | struct lpfc_hba *phba = vport->phba; |
dea3101e | 802 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; |
803 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
804 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; | |
805 | struct lpfc_iocbq *piocbq = &(lpfc_cmd->cur_iocbq); | |
806 | int datadir = scsi_cmnd->sc_data_direction; | |
7e2b19fb | 807 | char tag[2]; |
dea3101e | 808 | |
58da1ffb JS |
809 | if (!pnode || !NLP_CHK_NODE_ACT(pnode)) |
810 | return; | |
811 | ||
dea3101e | 812 | lpfc_cmd->fcp_rsp->rspSnsLen = 0; |
69859dc4 JSEC |
813 | /* clear task management bits */ |
814 | lpfc_cmd->fcp_cmnd->fcpCntl2 = 0; | |
dea3101e | 815 | |
91886523 JSEC |
816 | int_to_scsilun(lpfc_cmd->pCmd->device->lun, |
817 | &lpfc_cmd->fcp_cmnd->fcp_lun); | |
dea3101e | 818 | |
819 | memcpy(&fcp_cmnd->fcpCdb[0], scsi_cmnd->cmnd, 16); | |
820 | ||
7e2b19fb JS |
821 | if (scsi_populate_tag_msg(scsi_cmnd, tag)) { |
822 | switch (tag[0]) { | |
dea3101e | 823 | case HEAD_OF_QUEUE_TAG: |
824 | fcp_cmnd->fcpCntl1 = HEAD_OF_Q; | |
825 | break; | |
826 | case ORDERED_QUEUE_TAG: | |
827 | fcp_cmnd->fcpCntl1 = ORDERED_Q; | |
828 | break; | |
829 | default: | |
830 | fcp_cmnd->fcpCntl1 = SIMPLE_Q; | |
831 | break; | |
832 | } | |
833 | } else | |
834 | fcp_cmnd->fcpCntl1 = 0; | |
835 | ||
836 | /* | |
837 | * There are three possibilities here - use scatter-gather segment, use | |
838 | * the single mapping, or neither. Start the lpfc command prep by | |
839 | * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first | |
840 | * data bde entry. | |
841 | */ | |
a0b4f78f | 842 | if (scsi_sg_count(scsi_cmnd)) { |
dea3101e | 843 | if (datadir == DMA_TO_DEVICE) { |
844 | iocb_cmd->ulpCommand = CMD_FCP_IWRITE64_CR; | |
845 | iocb_cmd->un.fcpi.fcpi_parm = 0; | |
846 | iocb_cmd->ulpPU = 0; | |
847 | fcp_cmnd->fcpCntl3 = WRITE_DATA; | |
848 | phba->fc4OutputRequests++; | |
849 | } else { | |
850 | iocb_cmd->ulpCommand = CMD_FCP_IREAD64_CR; | |
851 | iocb_cmd->ulpPU = PARM_READ_CHECK; | |
a0b4f78f | 852 | iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd); |
dea3101e | 853 | fcp_cmnd->fcpCntl3 = READ_DATA; |
854 | phba->fc4InputRequests++; | |
855 | } | |
856 | } else { | |
857 | iocb_cmd->ulpCommand = CMD_FCP_ICMND64_CR; | |
858 | iocb_cmd->un.fcpi.fcpi_parm = 0; | |
859 | iocb_cmd->ulpPU = 0; | |
860 | fcp_cmnd->fcpCntl3 = 0; | |
861 | phba->fc4ControlRequests++; | |
862 | } | |
34b02dcd JS |
863 | if (phba->sli_rev == 3) |
864 | lpfc_fcpcmd_to_iocb(iocb_cmd->unsli3.fcp_ext.icd, fcp_cmnd); | |
dea3101e | 865 | /* |
866 | * Finish initializing those IOCB fields that are independent | |
867 | * of the scsi_cmnd request_buffer | |
868 | */ | |
869 | piocbq->iocb.ulpContext = pnode->nlp_rpi; | |
870 | if (pnode->nlp_fcp_info & NLP_FCP_2_DEVICE) | |
871 | piocbq->iocb.ulpFCP2Rcvy = 1; | |
09372820 JS |
872 | else |
873 | piocbq->iocb.ulpFCP2Rcvy = 0; | |
dea3101e | 874 | |
875 | piocbq->iocb.ulpClass = (pnode->nlp_fcp_info & 0x0f); | |
876 | piocbq->context1 = lpfc_cmd; | |
877 | piocbq->iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl; | |
878 | piocbq->iocb.ulpTimeout = lpfc_cmd->timeout; | |
2e0fef85 | 879 | piocbq->vport = vport; |
dea3101e | 880 | } |
881 | ||
882 | static int | |
2e0fef85 | 883 | lpfc_scsi_prep_task_mgmt_cmd(struct lpfc_vport *vport, |
dea3101e | 884 | struct lpfc_scsi_buf *lpfc_cmd, |
420b630d | 885 | unsigned int lun, |
dea3101e | 886 | uint8_t task_mgmt_cmd) |
887 | { | |
dea3101e | 888 | struct lpfc_iocbq *piocbq; |
889 | IOCB_t *piocb; | |
890 | struct fcp_cmnd *fcp_cmnd; | |
0b18ac42 | 891 | struct lpfc_rport_data *rdata = lpfc_cmd->rdata; |
dea3101e | 892 | struct lpfc_nodelist *ndlp = rdata->pnode; |
893 | ||
58da1ffb JS |
894 | if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || |
895 | ndlp->nlp_state != NLP_STE_MAPPED_NODE) | |
dea3101e | 896 | return 0; |
dea3101e | 897 | |
dea3101e | 898 | piocbq = &(lpfc_cmd->cur_iocbq); |
2e0fef85 JS |
899 | piocbq->vport = vport; |
900 | ||
dea3101e | 901 | piocb = &piocbq->iocb; |
902 | ||
903 | fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
34b02dcd JS |
904 | /* Clear out any old data in the FCP command area */ |
905 | memset(fcp_cmnd, 0, sizeof(struct fcp_cmnd)); | |
906 | int_to_scsilun(lun, &fcp_cmnd->fcp_lun); | |
dea3101e | 907 | fcp_cmnd->fcpCntl2 = task_mgmt_cmd; |
34b02dcd JS |
908 | if (vport->phba->sli_rev == 3) |
909 | lpfc_fcpcmd_to_iocb(piocb->unsli3.fcp_ext.icd, fcp_cmnd); | |
dea3101e | 910 | piocb->ulpCommand = CMD_FCP_ICMND64_CR; |
dea3101e | 911 | piocb->ulpContext = ndlp->nlp_rpi; |
912 | if (ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) { | |
913 | piocb->ulpFCP2Rcvy = 1; | |
914 | } | |
915 | piocb->ulpClass = (ndlp->nlp_fcp_info & 0x0f); | |
916 | ||
917 | /* ulpTimeout is only one byte */ | |
918 | if (lpfc_cmd->timeout > 0xff) { | |
919 | /* | |
920 | * Do not timeout the command at the firmware level. | |
921 | * The driver will provide the timeout mechanism. | |
922 | */ | |
923 | piocb->ulpTimeout = 0; | |
924 | } else { | |
925 | piocb->ulpTimeout = lpfc_cmd->timeout; | |
926 | } | |
927 | ||
2e0fef85 | 928 | return 1; |
dea3101e | 929 | } |
930 | ||
7054a606 JS |
931 | static void |
932 | lpfc_tskmgmt_def_cmpl(struct lpfc_hba *phba, | |
933 | struct lpfc_iocbq *cmdiocbq, | |
934 | struct lpfc_iocbq *rspiocbq) | |
935 | { | |
936 | struct lpfc_scsi_buf *lpfc_cmd = | |
937 | (struct lpfc_scsi_buf *) cmdiocbq->context1; | |
938 | if (lpfc_cmd) | |
939 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
940 | return; | |
941 | } | |
942 | ||
dea3101e | 943 | static int |
2e0fef85 | 944 | lpfc_scsi_tgt_reset(struct lpfc_scsi_buf *lpfc_cmd, struct lpfc_vport *vport, |
420b630d JS |
945 | unsigned tgt_id, unsigned int lun, |
946 | struct lpfc_rport_data *rdata) | |
dea3101e | 947 | { |
2e0fef85 | 948 | struct lpfc_hba *phba = vport->phba; |
dea3101e | 949 | struct lpfc_iocbq *iocbq; |
0bd4ca25 | 950 | struct lpfc_iocbq *iocbqrsp; |
dea3101e | 951 | int ret; |
915caaaf | 952 | int status; |
dea3101e | 953 | |
58da1ffb | 954 | if (!rdata->pnode || !NLP_CHK_NODE_ACT(rdata->pnode)) |
f5603511 JS |
955 | return FAILED; |
956 | ||
0b18ac42 | 957 | lpfc_cmd->rdata = rdata; |
915caaaf | 958 | status = lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd, lun, |
420b630d | 959 | FCP_TARGET_RESET); |
915caaaf | 960 | if (!status) |
dea3101e | 961 | return FAILED; |
962 | ||
dea3101e | 963 | iocbq = &lpfc_cmd->cur_iocbq; |
0bd4ca25 JSEC |
964 | iocbqrsp = lpfc_sli_get_iocbq(phba); |
965 | ||
dea3101e | 966 | if (!iocbqrsp) |
967 | return FAILED; | |
dea3101e | 968 | |
0b18ac42 | 969 | /* Issue Target Reset to TGT <num> */ |
e8b62011 JS |
970 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
971 | "0702 Issue Target Reset to TGT %d Data: x%x x%x\n", | |
972 | tgt_id, rdata->pnode->nlp_rpi, rdata->pnode->nlp_flag); | |
915caaaf | 973 | status = lpfc_sli_issue_iocb_wait(phba, |
68876920 JSEC |
974 | &phba->sli.ring[phba->sli.fcp_ring], |
975 | iocbq, iocbqrsp, lpfc_cmd->timeout); | |
915caaaf JS |
976 | if (status != IOCB_SUCCESS) { |
977 | if (status == IOCB_TIMEDOUT) { | |
7054a606 | 978 | iocbq->iocb_cmpl = lpfc_tskmgmt_def_cmpl; |
915caaaf JS |
979 | ret = TIMEOUT_ERROR; |
980 | } else | |
981 | ret = FAILED; | |
dea3101e | 982 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; |
dea3101e | 983 | } else { |
984 | ret = SUCCESS; | |
985 | lpfc_cmd->result = iocbqrsp->iocb.un.ulpWord[4]; | |
986 | lpfc_cmd->status = iocbqrsp->iocb.ulpStatus; | |
987 | if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT && | |
988 | (lpfc_cmd->result & IOERR_DRVR_MASK)) | |
989 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; | |
990 | } | |
991 | ||
604a3e30 | 992 | lpfc_sli_release_iocbq(phba, iocbqrsp); |
dea3101e | 993 | return ret; |
994 | } | |
995 | ||
dea3101e | 996 | const char * |
997 | lpfc_info(struct Scsi_Host *host) | |
998 | { | |
2e0fef85 JS |
999 | struct lpfc_vport *vport = (struct lpfc_vport *) host->hostdata; |
1000 | struct lpfc_hba *phba = vport->phba; | |
dea3101e | 1001 | int len; |
1002 | static char lpfcinfobuf[384]; | |
1003 | ||
1004 | memset(lpfcinfobuf,0,384); | |
1005 | if (phba && phba->pcidev){ | |
1006 | strncpy(lpfcinfobuf, phba->ModelDesc, 256); | |
1007 | len = strlen(lpfcinfobuf); | |
1008 | snprintf(lpfcinfobuf + len, | |
1009 | 384-len, | |
1010 | " on PCI bus %02x device %02x irq %d", | |
1011 | phba->pcidev->bus->number, | |
1012 | phba->pcidev->devfn, | |
1013 | phba->pcidev->irq); | |
1014 | len = strlen(lpfcinfobuf); | |
1015 | if (phba->Port[0]) { | |
1016 | snprintf(lpfcinfobuf + len, | |
1017 | 384-len, | |
1018 | " port %s", | |
1019 | phba->Port); | |
1020 | } | |
1021 | } | |
1022 | return lpfcinfobuf; | |
1023 | } | |
1024 | ||
875fbdfe JSEC |
1025 | static __inline__ void lpfc_poll_rearm_timer(struct lpfc_hba * phba) |
1026 | { | |
1027 | unsigned long poll_tmo_expires = | |
1028 | (jiffies + msecs_to_jiffies(phba->cfg_poll_tmo)); | |
1029 | ||
1030 | if (phba->sli.ring[LPFC_FCP_RING].txcmplq_cnt) | |
1031 | mod_timer(&phba->fcp_poll_timer, | |
1032 | poll_tmo_expires); | |
1033 | } | |
1034 | ||
1035 | void lpfc_poll_start_timer(struct lpfc_hba * phba) | |
1036 | { | |
1037 | lpfc_poll_rearm_timer(phba); | |
1038 | } | |
1039 | ||
1040 | void lpfc_poll_timeout(unsigned long ptr) | |
1041 | { | |
2e0fef85 | 1042 | struct lpfc_hba *phba = (struct lpfc_hba *) ptr; |
875fbdfe JSEC |
1043 | |
1044 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { | |
1045 | lpfc_sli_poll_fcp_ring (phba); | |
1046 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) | |
1047 | lpfc_poll_rearm_timer(phba); | |
1048 | } | |
875fbdfe JSEC |
1049 | } |
1050 | ||
dea3101e | 1051 | static int |
1052 | lpfc_queuecommand(struct scsi_cmnd *cmnd, void (*done) (struct scsi_cmnd *)) | |
1053 | { | |
2e0fef85 JS |
1054 | struct Scsi_Host *shost = cmnd->device->host; |
1055 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
1056 | struct lpfc_hba *phba = vport->phba; | |
1057 | struct lpfc_sli *psli = &phba->sli; | |
dea3101e | 1058 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; |
1059 | struct lpfc_nodelist *ndlp = rdata->pnode; | |
0bd4ca25 | 1060 | struct lpfc_scsi_buf *lpfc_cmd; |
19a7b4ae | 1061 | struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); |
19a7b4ae | 1062 | int err; |
dea3101e | 1063 | |
19a7b4ae JSEC |
1064 | err = fc_remote_port_chkready(rport); |
1065 | if (err) { | |
1066 | cmnd->result = err; | |
dea3101e | 1067 | goto out_fail_command; |
1068 | } | |
1069 | ||
1070 | /* | |
19a7b4ae JSEC |
1071 | * Catch race where our node has transitioned, but the |
1072 | * transport is still transitioning. | |
dea3101e | 1073 | */ |
b522d7d4 JS |
1074 | if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) { |
1075 | cmnd->result = ScsiResult(DID_TRANSPORT_DISRUPTED, 0); | |
1076 | goto out_fail_command; | |
1077 | } | |
a93ce024 | 1078 | |
ed957684 | 1079 | lpfc_cmd = lpfc_get_scsi_buf(phba); |
dea3101e | 1080 | if (lpfc_cmd == NULL) { |
92d7f7b0 JS |
1081 | lpfc_adjust_queue_depth(phba); |
1082 | ||
e8b62011 JS |
1083 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
1084 | "0707 driver's buffer pool is empty, " | |
1085 | "IO busied\n"); | |
dea3101e | 1086 | goto out_host_busy; |
1087 | } | |
1088 | ||
1089 | /* | |
1090 | * Store the midlayer's command structure for the completion phase | |
1091 | * and complete the command initialization. | |
1092 | */ | |
1093 | lpfc_cmd->pCmd = cmnd; | |
1094 | lpfc_cmd->rdata = rdata; | |
1095 | lpfc_cmd->timeout = 0; | |
1096 | cmnd->host_scribble = (unsigned char *)lpfc_cmd; | |
1097 | cmnd->scsi_done = done; | |
1098 | ||
1099 | err = lpfc_scsi_prep_dma_buf(phba, lpfc_cmd); | |
1100 | if (err) | |
1101 | goto out_host_busy_free_buf; | |
1102 | ||
2e0fef85 | 1103 | lpfc_scsi_prep_cmnd(vport, lpfc_cmd, ndlp); |
dea3101e | 1104 | |
1105 | err = lpfc_sli_issue_iocb(phba, &phba->sli.ring[psli->fcp_ring], | |
92d7f7b0 | 1106 | &lpfc_cmd->cur_iocbq, SLI_IOCB_RET_IOCB); |
dea3101e | 1107 | if (err) |
1108 | goto out_host_busy_free_buf; | |
875fbdfe JSEC |
1109 | |
1110 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { | |
1111 | lpfc_sli_poll_fcp_ring(phba); | |
1112 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) | |
1113 | lpfc_poll_rearm_timer(phba); | |
1114 | } | |
1115 | ||
dea3101e | 1116 | return 0; |
1117 | ||
1118 | out_host_busy_free_buf: | |
bcf4dbfa | 1119 | lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd); |
0bd4ca25 | 1120 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
dea3101e | 1121 | out_host_busy: |
1122 | return SCSI_MLQUEUE_HOST_BUSY; | |
1123 | ||
1124 | out_fail_command: | |
1125 | done(cmnd); | |
1126 | return 0; | |
1127 | } | |
1128 | ||
a90f5684 JS |
1129 | static void |
1130 | lpfc_block_error_handler(struct scsi_cmnd *cmnd) | |
1131 | { | |
1132 | struct Scsi_Host *shost = cmnd->device->host; | |
1133 | struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); | |
1134 | ||
1135 | spin_lock_irq(shost->host_lock); | |
1136 | while (rport->port_state == FC_PORTSTATE_BLOCKED) { | |
1137 | spin_unlock_irq(shost->host_lock); | |
1138 | msleep(1000); | |
1139 | spin_lock_irq(shost->host_lock); | |
1140 | } | |
1141 | spin_unlock_irq(shost->host_lock); | |
1142 | return; | |
1143 | } | |
63c59c3b | 1144 | |
dea3101e | 1145 | static int |
63c59c3b | 1146 | lpfc_abort_handler(struct scsi_cmnd *cmnd) |
dea3101e | 1147 | { |
2e0fef85 JS |
1148 | struct Scsi_Host *shost = cmnd->device->host; |
1149 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
1150 | struct lpfc_hba *phba = vport->phba; | |
dea3101e | 1151 | struct lpfc_sli_ring *pring = &phba->sli.ring[phba->sli.fcp_ring]; |
0bd4ca25 JSEC |
1152 | struct lpfc_iocbq *iocb; |
1153 | struct lpfc_iocbq *abtsiocb; | |
dea3101e | 1154 | struct lpfc_scsi_buf *lpfc_cmd; |
dea3101e | 1155 | IOCB_t *cmd, *icmd; |
0bd4ca25 | 1156 | int ret = SUCCESS; |
fa61a54e | 1157 | DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq); |
dea3101e | 1158 | |
a90f5684 | 1159 | lpfc_block_error_handler(cmnd); |
0bd4ca25 JSEC |
1160 | lpfc_cmd = (struct lpfc_scsi_buf *)cmnd->host_scribble; |
1161 | BUG_ON(!lpfc_cmd); | |
dea3101e | 1162 | |
0bd4ca25 JSEC |
1163 | /* |
1164 | * If pCmd field of the corresponding lpfc_scsi_buf structure | |
1165 | * points to a different SCSI command, then the driver has | |
1166 | * already completed this command, but the midlayer did not | |
1167 | * see the completion before the eh fired. Just return | |
1168 | * SUCCESS. | |
1169 | */ | |
1170 | iocb = &lpfc_cmd->cur_iocbq; | |
1171 | if (lpfc_cmd->pCmd != cmnd) | |
1172 | goto out; | |
dea3101e | 1173 | |
0bd4ca25 | 1174 | BUG_ON(iocb->context1 != lpfc_cmd); |
dea3101e | 1175 | |
0bd4ca25 JSEC |
1176 | abtsiocb = lpfc_sli_get_iocbq(phba); |
1177 | if (abtsiocb == NULL) { | |
1178 | ret = FAILED; | |
dea3101e | 1179 | goto out; |
1180 | } | |
1181 | ||
dea3101e | 1182 | /* |
0bd4ca25 JSEC |
1183 | * The scsi command can not be in txq and it is in flight because the |
1184 | * pCmd is still pointig at the SCSI command we have to abort. There | |
1185 | * is no need to search the txcmplq. Just send an abort to the FW. | |
dea3101e | 1186 | */ |
dea3101e | 1187 | |
0bd4ca25 JSEC |
1188 | cmd = &iocb->iocb; |
1189 | icmd = &abtsiocb->iocb; | |
1190 | icmd->un.acxri.abortType = ABORT_TYPE_ABTS; | |
1191 | icmd->un.acxri.abortContextTag = cmd->ulpContext; | |
1192 | icmd->un.acxri.abortIoTag = cmd->ulpIoTag; | |
dea3101e | 1193 | |
0bd4ca25 JSEC |
1194 | icmd->ulpLe = 1; |
1195 | icmd->ulpClass = cmd->ulpClass; | |
2e0fef85 | 1196 | if (lpfc_is_link_up(phba)) |
0bd4ca25 JSEC |
1197 | icmd->ulpCommand = CMD_ABORT_XRI_CN; |
1198 | else | |
1199 | icmd->ulpCommand = CMD_CLOSE_XRI_CN; | |
dea3101e | 1200 | |
0bd4ca25 | 1201 | abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl; |
2e0fef85 | 1202 | abtsiocb->vport = vport; |
0bd4ca25 JSEC |
1203 | if (lpfc_sli_issue_iocb(phba, pring, abtsiocb, 0) == IOCB_ERROR) { |
1204 | lpfc_sli_release_iocbq(phba, abtsiocb); | |
1205 | ret = FAILED; | |
1206 | goto out; | |
1207 | } | |
dea3101e | 1208 | |
875fbdfe JSEC |
1209 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
1210 | lpfc_sli_poll_fcp_ring (phba); | |
1211 | ||
fa61a54e | 1212 | lpfc_cmd->waitq = &waitq; |
0bd4ca25 | 1213 | /* Wait for abort to complete */ |
fa61a54e JS |
1214 | wait_event_timeout(waitq, |
1215 | (lpfc_cmd->pCmd != cmnd), | |
1216 | (2*vport->cfg_devloss_tmo*HZ)); | |
875fbdfe | 1217 | |
fa61a54e JS |
1218 | spin_lock_irq(shost->host_lock); |
1219 | lpfc_cmd->waitq = NULL; | |
1220 | spin_unlock_irq(shost->host_lock); | |
dea3101e | 1221 | |
0bd4ca25 JSEC |
1222 | if (lpfc_cmd->pCmd == cmnd) { |
1223 | ret = FAILED; | |
e8b62011 JS |
1224 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
1225 | "0748 abort handler timed out waiting " | |
1226 | "for abort to complete: ret %#x, ID %d, " | |
1227 | "LUN %d, snum %#lx\n", | |
1228 | ret, cmnd->device->id, cmnd->device->lun, | |
1229 | cmnd->serial_number); | |
dea3101e | 1230 | } |
1231 | ||
1232 | out: | |
e8b62011 JS |
1233 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
1234 | "0749 SCSI Layer I/O Abort Request Status x%x ID %d " | |
1235 | "LUN %d snum %#lx\n", ret, cmnd->device->id, | |
1236 | cmnd->device->lun, cmnd->serial_number); | |
63c59c3b | 1237 | return ret; |
8fa728a2 JG |
1238 | } |
1239 | ||
dea3101e | 1240 | static int |
7054a606 | 1241 | lpfc_device_reset_handler(struct scsi_cmnd *cmnd) |
dea3101e | 1242 | { |
2e0fef85 JS |
1243 | struct Scsi_Host *shost = cmnd->device->host; |
1244 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
1245 | struct lpfc_hba *phba = vport->phba; | |
0bd4ca25 JSEC |
1246 | struct lpfc_scsi_buf *lpfc_cmd; |
1247 | struct lpfc_iocbq *iocbq, *iocbqrsp; | |
dea3101e | 1248 | struct lpfc_rport_data *rdata = cmnd->device->hostdata; |
1249 | struct lpfc_nodelist *pnode = rdata->pnode; | |
915caaaf JS |
1250 | unsigned long later; |
1251 | int ret = SUCCESS; | |
1252 | int status; | |
1253 | int cnt; | |
dea3101e | 1254 | |
a90f5684 | 1255 | lpfc_block_error_handler(cmnd); |
dea3101e | 1256 | /* |
1257 | * If target is not in a MAPPED state, delay the reset until | |
c01f3208 | 1258 | * target is rediscovered or devloss timeout expires. |
dea3101e | 1259 | */ |
915caaaf JS |
1260 | later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies; |
1261 | while (time_after(later, jiffies)) { | |
58da1ffb | 1262 | if (!pnode || !NLP_CHK_NODE_ACT(pnode)) |
915caaaf | 1263 | return FAILED; |
f5603511 | 1264 | if (pnode->nlp_state == NLP_STE_MAPPED_NODE) |
dea3101e | 1265 | break; |
915caaaf JS |
1266 | schedule_timeout_uninterruptible(msecs_to_jiffies(500)); |
1267 | rdata = cmnd->device->hostdata; | |
1268 | if (!rdata) | |
1269 | break; | |
1270 | pnode = rdata->pnode; | |
1271 | } | |
1272 | if (!rdata || pnode->nlp_state != NLP_STE_MAPPED_NODE) { | |
1273 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
1274 | "0721 LUN Reset rport " | |
1275 | "failure: msec x%x rdata x%p\n", | |
1276 | jiffies_to_msecs(jiffies - later), rdata); | |
1277 | return FAILED; | |
dea3101e | 1278 | } |
2e0fef85 | 1279 | lpfc_cmd = lpfc_get_scsi_buf(phba); |
dea3101e | 1280 | if (lpfc_cmd == NULL) |
915caaaf | 1281 | return FAILED; |
dea3101e | 1282 | lpfc_cmd->timeout = 60; |
0b18ac42 | 1283 | lpfc_cmd->rdata = rdata; |
dea3101e | 1284 | |
915caaaf JS |
1285 | status = lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd, |
1286 | cmnd->device->lun, | |
1287 | FCP_TARGET_RESET); | |
1288 | if (!status) { | |
1289 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
1290 | return FAILED; | |
1291 | } | |
dea3101e | 1292 | iocbq = &lpfc_cmd->cur_iocbq; |
1293 | ||
1294 | /* get a buffer for this IOCB command response */ | |
0bd4ca25 | 1295 | iocbqrsp = lpfc_sli_get_iocbq(phba); |
915caaaf JS |
1296 | if (iocbqrsp == NULL) { |
1297 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
1298 | return FAILED; | |
1299 | } | |
e8b62011 JS |
1300 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
1301 | "0703 Issue target reset to TGT %d LUN %d " | |
1302 | "rpi x%x nlp_flag x%x\n", cmnd->device->id, | |
1303 | cmnd->device->lun, pnode->nlp_rpi, pnode->nlp_flag); | |
915caaaf JS |
1304 | status = lpfc_sli_issue_iocb_wait(phba, |
1305 | &phba->sli.ring[phba->sli.fcp_ring], | |
1306 | iocbq, iocbqrsp, lpfc_cmd->timeout); | |
1307 | if (status == IOCB_TIMEDOUT) { | |
7054a606 | 1308 | iocbq->iocb_cmpl = lpfc_tskmgmt_def_cmpl; |
915caaaf JS |
1309 | ret = TIMEOUT_ERROR; |
1310 | } else { | |
1311 | if (status != IOCB_SUCCESS) | |
1312 | ret = FAILED; | |
1313 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
1314 | } | |
1315 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
1316 | "0713 SCSI layer issued device reset (%d, %d) " | |
1317 | "return x%x status x%x result x%x\n", | |
1318 | cmnd->device->id, cmnd->device->lun, ret, | |
1319 | iocbqrsp->iocb.ulpStatus, | |
1320 | iocbqrsp->iocb.un.ulpWord[4]); | |
6175c02a | 1321 | lpfc_sli_release_iocbq(phba, iocbqrsp); |
51ef4c26 | 1322 | cnt = lpfc_sli_sum_iocb(vport, cmnd->device->id, cmnd->device->lun, |
915caaaf | 1323 | LPFC_CTX_TGT); |
6175c02a | 1324 | if (cnt) |
51ef4c26 | 1325 | lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring], |
6175c02a | 1326 | cmnd->device->id, cmnd->device->lun, |
915caaaf JS |
1327 | LPFC_CTX_TGT); |
1328 | later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies; | |
1329 | while (time_after(later, jiffies) && cnt) { | |
1330 | schedule_timeout_uninterruptible(msecs_to_jiffies(20)); | |
51ef4c26 | 1331 | cnt = lpfc_sli_sum_iocb(vport, cmnd->device->id, |
915caaaf | 1332 | cmnd->device->lun, LPFC_CTX_TGT); |
dea3101e | 1333 | } |
dea3101e | 1334 | if (cnt) { |
e8b62011 JS |
1335 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
1336 | "0719 device reset I/O flush failure: " | |
1337 | "cnt x%x\n", cnt); | |
0bd4ca25 | 1338 | ret = FAILED; |
dea3101e | 1339 | } |
dea3101e | 1340 | return ret; |
1341 | } | |
1342 | ||
94d0e7b8 | 1343 | static int |
7054a606 | 1344 | lpfc_bus_reset_handler(struct scsi_cmnd *cmnd) |
dea3101e | 1345 | { |
2e0fef85 JS |
1346 | struct Scsi_Host *shost = cmnd->device->host; |
1347 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
1348 | struct lpfc_hba *phba = vport->phba; | |
dea3101e | 1349 | struct lpfc_nodelist *ndlp = NULL; |
1350 | int match; | |
d7c255b2 | 1351 | int ret = SUCCESS, status = SUCCESS, i; |
915caaaf | 1352 | int cnt; |
0bd4ca25 | 1353 | struct lpfc_scsi_buf * lpfc_cmd; |
915caaaf | 1354 | unsigned long later; |
dea3101e | 1355 | |
a90f5684 | 1356 | lpfc_block_error_handler(cmnd); |
dea3101e | 1357 | /* |
1358 | * Since the driver manages a single bus device, reset all | |
1359 | * targets known to the driver. Should any target reset | |
1360 | * fail, this routine returns failure to the midlayer. | |
1361 | */ | |
e17da18e | 1362 | for (i = 0; i < LPFC_MAX_TARGET; i++) { |
685f0bf7 | 1363 | /* Search for mapped node by target ID */ |
dea3101e | 1364 | match = 0; |
2e0fef85 JS |
1365 | spin_lock_irq(shost->host_lock); |
1366 | list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { | |
e47c9093 JS |
1367 | if (!NLP_CHK_NODE_ACT(ndlp)) |
1368 | continue; | |
685f0bf7 | 1369 | if (ndlp->nlp_state == NLP_STE_MAPPED_NODE && |
915caaaf | 1370 | ndlp->nlp_sid == i && |
685f0bf7 | 1371 | ndlp->rport) { |
dea3101e | 1372 | match = 1; |
1373 | break; | |
1374 | } | |
1375 | } | |
2e0fef85 | 1376 | spin_unlock_irq(shost->host_lock); |
dea3101e | 1377 | if (!match) |
1378 | continue; | |
915caaaf JS |
1379 | lpfc_cmd = lpfc_get_scsi_buf(phba); |
1380 | if (lpfc_cmd) { | |
1381 | lpfc_cmd->timeout = 60; | |
1382 | status = lpfc_scsi_tgt_reset(lpfc_cmd, vport, i, | |
1383 | cmnd->device->lun, | |
1384 | ndlp->rport->dd_data); | |
1385 | if (status != TIMEOUT_ERROR) | |
1386 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
1387 | } | |
1388 | if (!lpfc_cmd || status != SUCCESS) { | |
e8b62011 JS |
1389 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
1390 | "0700 Bus Reset on target %d failed\n", | |
1391 | i); | |
915caaaf | 1392 | ret = FAILED; |
dea3101e | 1393 | } |
1394 | } | |
6175c02a JSEC |
1395 | /* |
1396 | * All outstanding txcmplq I/Os should have been aborted by | |
1397 | * the targets. Unfortunately, some targets do not abide by | |
1398 | * this forcing the driver to double check. | |
1399 | */ | |
51ef4c26 | 1400 | cnt = lpfc_sli_sum_iocb(vport, 0, 0, LPFC_CTX_HOST); |
6175c02a | 1401 | if (cnt) |
51ef4c26 JS |
1402 | lpfc_sli_abort_iocb(vport, &phba->sli.ring[phba->sli.fcp_ring], |
1403 | 0, 0, LPFC_CTX_HOST); | |
915caaaf JS |
1404 | later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies; |
1405 | while (time_after(later, jiffies) && cnt) { | |
1406 | schedule_timeout_uninterruptible(msecs_to_jiffies(20)); | |
51ef4c26 | 1407 | cnt = lpfc_sli_sum_iocb(vport, 0, 0, LPFC_CTX_HOST); |
dea3101e | 1408 | } |
dea3101e | 1409 | if (cnt) { |
e8b62011 JS |
1410 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
1411 | "0715 Bus Reset I/O flush failure: " | |
1412 | "cnt x%x left x%x\n", cnt, i); | |
0bd4ca25 | 1413 | ret = FAILED; |
6175c02a | 1414 | } |
e8b62011 JS |
1415 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
1416 | "0714 SCSI layer issued Bus Reset Data: x%x\n", ret); | |
dea3101e | 1417 | return ret; |
1418 | } | |
1419 | ||
1420 | static int | |
1421 | lpfc_slave_alloc(struct scsi_device *sdev) | |
1422 | { | |
2e0fef85 JS |
1423 | struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; |
1424 | struct lpfc_hba *phba = vport->phba; | |
dea3101e | 1425 | struct lpfc_scsi_buf *scsi_buf = NULL; |
19a7b4ae | 1426 | struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); |
dea3101e | 1427 | uint32_t total = 0, i; |
1428 | uint32_t num_to_alloc = 0; | |
1429 | unsigned long flags; | |
dea3101e | 1430 | |
19a7b4ae | 1431 | if (!rport || fc_remote_port_chkready(rport)) |
dea3101e | 1432 | return -ENXIO; |
1433 | ||
19a7b4ae | 1434 | sdev->hostdata = rport->dd_data; |
dea3101e | 1435 | |
1436 | /* | |
1437 | * Populate the cmds_per_lun count scsi_bufs into this host's globally | |
1438 | * available list of scsi buffers. Don't allocate more than the | |
a784efbf JSEC |
1439 | * HBA limit conveyed to the midlayer via the host structure. The |
1440 | * formula accounts for the lun_queue_depth + error handlers + 1 | |
1441 | * extra. This list of scsi bufs exists for the lifetime of the driver. | |
dea3101e | 1442 | */ |
1443 | total = phba->total_scsi_bufs; | |
3de2a653 | 1444 | num_to_alloc = vport->cfg_lun_queue_depth + 2; |
92d7f7b0 JS |
1445 | |
1446 | /* Allow some exchanges to be available always to complete discovery */ | |
1447 | if (total >= phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) { | |
e8b62011 JS |
1448 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
1449 | "0704 At limitation of %d preallocated " | |
1450 | "command buffers\n", total); | |
dea3101e | 1451 | return 0; |
92d7f7b0 JS |
1452 | /* Allow some exchanges to be available always to complete discovery */ |
1453 | } else if (total + num_to_alloc > | |
1454 | phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) { | |
e8b62011 JS |
1455 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
1456 | "0705 Allocation request of %d " | |
1457 | "command buffers will exceed max of %d. " | |
1458 | "Reducing allocation request to %d.\n", | |
1459 | num_to_alloc, phba->cfg_hba_queue_depth, | |
1460 | (phba->cfg_hba_queue_depth - total)); | |
dea3101e | 1461 | num_to_alloc = phba->cfg_hba_queue_depth - total; |
1462 | } | |
1463 | ||
1464 | for (i = 0; i < num_to_alloc; i++) { | |
2e0fef85 | 1465 | scsi_buf = lpfc_new_scsi_buf(vport); |
dea3101e | 1466 | if (!scsi_buf) { |
e8b62011 JS |
1467 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
1468 | "0706 Failed to allocate " | |
1469 | "command buffer\n"); | |
dea3101e | 1470 | break; |
1471 | } | |
1472 | ||
875fbdfe | 1473 | spin_lock_irqsave(&phba->scsi_buf_list_lock, flags); |
dea3101e | 1474 | phba->total_scsi_bufs++; |
1475 | list_add_tail(&scsi_buf->list, &phba->lpfc_scsi_buf_list); | |
875fbdfe | 1476 | spin_unlock_irqrestore(&phba->scsi_buf_list_lock, flags); |
dea3101e | 1477 | } |
1478 | return 0; | |
1479 | } | |
1480 | ||
1481 | static int | |
1482 | lpfc_slave_configure(struct scsi_device *sdev) | |
1483 | { | |
2e0fef85 JS |
1484 | struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; |
1485 | struct lpfc_hba *phba = vport->phba; | |
1486 | struct fc_rport *rport = starget_to_rport(sdev->sdev_target); | |
dea3101e | 1487 | |
1488 | if (sdev->tagged_supported) | |
3de2a653 | 1489 | scsi_activate_tcq(sdev, vport->cfg_lun_queue_depth); |
dea3101e | 1490 | else |
3de2a653 | 1491 | scsi_deactivate_tcq(sdev, vport->cfg_lun_queue_depth); |
dea3101e | 1492 | |
1493 | /* | |
1494 | * Initialize the fc transport attributes for the target | |
1495 | * containing this scsi device. Also note that the driver's | |
1496 | * target pointer is stored in the starget_data for the | |
1497 | * driver's sysfs entry point functions. | |
1498 | */ | |
3de2a653 | 1499 | rport->dev_loss_tmo = vport->cfg_devloss_tmo; |
dea3101e | 1500 | |
875fbdfe JSEC |
1501 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { |
1502 | lpfc_sli_poll_fcp_ring(phba); | |
1503 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) | |
1504 | lpfc_poll_rearm_timer(phba); | |
1505 | } | |
1506 | ||
dea3101e | 1507 | return 0; |
1508 | } | |
1509 | ||
1510 | static void | |
1511 | lpfc_slave_destroy(struct scsi_device *sdev) | |
1512 | { | |
1513 | sdev->hostdata = NULL; | |
1514 | return; | |
1515 | } | |
1516 | ||
92d7f7b0 | 1517 | |
dea3101e | 1518 | struct scsi_host_template lpfc_template = { |
1519 | .module = THIS_MODULE, | |
1520 | .name = LPFC_DRIVER_NAME, | |
1521 | .info = lpfc_info, | |
1522 | .queuecommand = lpfc_queuecommand, | |
1523 | .eh_abort_handler = lpfc_abort_handler, | |
7054a606 JS |
1524 | .eh_device_reset_handler= lpfc_device_reset_handler, |
1525 | .eh_bus_reset_handler = lpfc_bus_reset_handler, | |
dea3101e | 1526 | .slave_alloc = lpfc_slave_alloc, |
1527 | .slave_configure = lpfc_slave_configure, | |
1528 | .slave_destroy = lpfc_slave_destroy, | |
47a8617c | 1529 | .scan_finished = lpfc_scan_finished, |
dea3101e | 1530 | .this_id = -1, |
83108bd3 | 1531 | .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT, |
dea3101e | 1532 | .cmd_per_lun = LPFC_CMD_PER_LUN, |
1533 | .use_clustering = ENABLE_CLUSTERING, | |
2e0fef85 | 1534 | .shost_attrs = lpfc_hba_attrs, |
564b2960 | 1535 | .max_sectors = 0xFFFF, |
dea3101e | 1536 | }; |
3de2a653 JS |
1537 | |
1538 | struct scsi_host_template lpfc_vport_template = { | |
1539 | .module = THIS_MODULE, | |
1540 | .name = LPFC_DRIVER_NAME, | |
1541 | .info = lpfc_info, | |
1542 | .queuecommand = lpfc_queuecommand, | |
1543 | .eh_abort_handler = lpfc_abort_handler, | |
1544 | .eh_device_reset_handler= lpfc_device_reset_handler, | |
1545 | .eh_bus_reset_handler = lpfc_bus_reset_handler, | |
1546 | .slave_alloc = lpfc_slave_alloc, | |
1547 | .slave_configure = lpfc_slave_configure, | |
1548 | .slave_destroy = lpfc_slave_destroy, | |
1549 | .scan_finished = lpfc_scan_finished, | |
1550 | .this_id = -1, | |
83108bd3 | 1551 | .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT, |
3de2a653 JS |
1552 | .cmd_per_lun = LPFC_CMD_PER_LUN, |
1553 | .use_clustering = ENABLE_CLUSTERING, | |
1554 | .shost_attrs = lpfc_vport_attrs, | |
1555 | .max_sectors = 0xFFFF, | |
1556 | }; |