Commit | Line | Data |
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d85296cf | 1 | /******************************************************************* |
dea3101e | 2 | * This file is part of the Emulex Linux Device Driver for * |
c44ce173 | 3 | * Fibre Channel Host Bus Adapters. * |
16a59fb3 | 4 | * Copyright (C) 2004-2014 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 | *******************************************************************/ |
dea3101e | 21 | #include <linux/pci.h> |
5a0e3ad6 | 22 | #include <linux/slab.h> |
dea3101e | 23 | #include <linux/interrupt.h> |
09703660 | 24 | #include <linux/export.h> |
a90f5684 | 25 | #include <linux/delay.h> |
e2a0a9d6 | 26 | #include <asm/unaligned.h> |
737d4248 JS |
27 | #include <linux/crc-t10dif.h> |
28 | #include <net/checksum.h> | |
dea3101e | 29 | |
30 | #include <scsi/scsi.h> | |
31 | #include <scsi/scsi_device.h> | |
e2a0a9d6 | 32 | #include <scsi/scsi_eh.h> |
dea3101e | 33 | #include <scsi/scsi_host.h> |
34 | #include <scsi/scsi_tcq.h> | |
35 | #include <scsi/scsi_transport_fc.h> | |
36 | ||
37 | #include "lpfc_version.h" | |
da0436e9 | 38 | #include "lpfc_hw4.h" |
dea3101e | 39 | #include "lpfc_hw.h" |
40 | #include "lpfc_sli.h" | |
da0436e9 | 41 | #include "lpfc_sli4.h" |
ea2151b4 | 42 | #include "lpfc_nl.h" |
dea3101e | 43 | #include "lpfc_disc.h" |
dea3101e | 44 | #include "lpfc.h" |
9a6b09c0 | 45 | #include "lpfc_scsi.h" |
dea3101e | 46 | #include "lpfc_logmsg.h" |
47 | #include "lpfc_crtn.h" | |
92d7f7b0 | 48 | #include "lpfc_vport.h" |
dea3101e | 49 | |
50 | #define LPFC_RESET_WAIT 2 | |
51 | #define LPFC_ABORT_WAIT 2 | |
52 | ||
737d4248 | 53 | int _dump_buf_done = 1; |
e2a0a9d6 JS |
54 | |
55 | static char *dif_op_str[] = { | |
9a6b09c0 JS |
56 | "PROT_NORMAL", |
57 | "PROT_READ_INSERT", | |
58 | "PROT_WRITE_STRIP", | |
59 | "PROT_READ_STRIP", | |
60 | "PROT_WRITE_INSERT", | |
61 | "PROT_READ_PASS", | |
62 | "PROT_WRITE_PASS", | |
63 | }; | |
64 | ||
f9bb2da1 JS |
65 | struct scsi_dif_tuple { |
66 | __be16 guard_tag; /* Checksum */ | |
67 | __be16 app_tag; /* Opaque storage */ | |
68 | __be32 ref_tag; /* Target LBA or indirect LBA */ | |
69 | }; | |
70 | ||
1ba981fd JS |
71 | static struct lpfc_rport_data * |
72 | lpfc_rport_data_from_scsi_device(struct scsi_device *sdev) | |
73 | { | |
74 | struct lpfc_vport *vport = (struct lpfc_vport *)sdev->host->hostdata; | |
75 | ||
f38fa0bb | 76 | if (vport->phba->cfg_fof) |
1ba981fd JS |
77 | return ((struct lpfc_device_data *)sdev->hostdata)->rport_data; |
78 | else | |
79 | return (struct lpfc_rport_data *)sdev->hostdata; | |
80 | } | |
81 | ||
da0436e9 JS |
82 | static void |
83 | lpfc_release_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb); | |
1c6f4ef5 JS |
84 | static void |
85 | lpfc_release_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb); | |
9c6aa9d7 JS |
86 | static int |
87 | lpfc_prot_group_type(struct lpfc_hba *phba, struct scsi_cmnd *sc); | |
e2a0a9d6 JS |
88 | |
89 | static void | |
6a9c52cf | 90 | lpfc_debug_save_data(struct lpfc_hba *phba, struct scsi_cmnd *cmnd) |
e2a0a9d6 JS |
91 | { |
92 | void *src, *dst; | |
93 | struct scatterlist *sgde = scsi_sglist(cmnd); | |
94 | ||
95 | if (!_dump_buf_data) { | |
6a9c52cf JS |
96 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
97 | "9050 BLKGRD: ERROR %s _dump_buf_data is NULL\n", | |
e2a0a9d6 JS |
98 | __func__); |
99 | return; | |
100 | } | |
101 | ||
102 | ||
103 | if (!sgde) { | |
6a9c52cf JS |
104 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
105 | "9051 BLKGRD: ERROR: data scatterlist is null\n"); | |
e2a0a9d6 JS |
106 | return; |
107 | } | |
108 | ||
109 | dst = (void *) _dump_buf_data; | |
110 | while (sgde) { | |
111 | src = sg_virt(sgde); | |
112 | memcpy(dst, src, sgde->length); | |
113 | dst += sgde->length; | |
114 | sgde = sg_next(sgde); | |
115 | } | |
116 | } | |
117 | ||
118 | static void | |
6a9c52cf | 119 | lpfc_debug_save_dif(struct lpfc_hba *phba, struct scsi_cmnd *cmnd) |
e2a0a9d6 JS |
120 | { |
121 | void *src, *dst; | |
122 | struct scatterlist *sgde = scsi_prot_sglist(cmnd); | |
123 | ||
124 | if (!_dump_buf_dif) { | |
6a9c52cf JS |
125 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
126 | "9052 BLKGRD: ERROR %s _dump_buf_data is NULL\n", | |
e2a0a9d6 JS |
127 | __func__); |
128 | return; | |
129 | } | |
130 | ||
131 | if (!sgde) { | |
6a9c52cf JS |
132 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
133 | "9053 BLKGRD: ERROR: prot scatterlist is null\n"); | |
e2a0a9d6 JS |
134 | return; |
135 | } | |
136 | ||
137 | dst = _dump_buf_dif; | |
138 | while (sgde) { | |
139 | src = sg_virt(sgde); | |
140 | memcpy(dst, src, sgde->length); | |
141 | dst += sgde->length; | |
142 | sgde = sg_next(sgde); | |
143 | } | |
144 | } | |
145 | ||
9c6aa9d7 JS |
146 | static inline unsigned |
147 | lpfc_cmd_blksize(struct scsi_cmnd *sc) | |
148 | { | |
149 | return sc->device->sector_size; | |
150 | } | |
151 | ||
152 | #define LPFC_CHECK_PROTECT_GUARD 1 | |
153 | #define LPFC_CHECK_PROTECT_REF 2 | |
154 | static inline unsigned | |
155 | lpfc_cmd_protect(struct scsi_cmnd *sc, int flag) | |
156 | { | |
157 | return 1; | |
158 | } | |
159 | ||
160 | static inline unsigned | |
161 | lpfc_cmd_guard_csum(struct scsi_cmnd *sc) | |
162 | { | |
163 | if (lpfc_prot_group_type(NULL, sc) == LPFC_PG_TYPE_NO_DIF) | |
164 | return 0; | |
165 | if (scsi_host_get_guard(sc->device->host) == SHOST_DIX_GUARD_IP) | |
166 | return 1; | |
167 | return 0; | |
168 | } | |
169 | ||
f1126688 JS |
170 | /** |
171 | * lpfc_sli4_set_rsp_sgl_last - Set the last bit in the response sge. | |
172 | * @phba: Pointer to HBA object. | |
173 | * @lpfc_cmd: lpfc scsi command object pointer. | |
174 | * | |
175 | * This function is called from the lpfc_prep_task_mgmt_cmd function to | |
176 | * set the last bit in the response sge entry. | |
177 | **/ | |
178 | static void | |
179 | lpfc_sli4_set_rsp_sgl_last(struct lpfc_hba *phba, | |
180 | struct lpfc_scsi_buf *lpfc_cmd) | |
181 | { | |
182 | struct sli4_sge *sgl = (struct sli4_sge *)lpfc_cmd->fcp_bpl; | |
183 | if (sgl) { | |
184 | sgl += 1; | |
185 | sgl->word2 = le32_to_cpu(sgl->word2); | |
186 | bf_set(lpfc_sli4_sge_last, sgl, 1); | |
187 | sgl->word2 = cpu_to_le32(sgl->word2); | |
188 | } | |
189 | } | |
190 | ||
ea2151b4 | 191 | /** |
3621a710 | 192 | * lpfc_update_stats - Update statistical data for the command completion |
ea2151b4 JS |
193 | * @phba: Pointer to HBA object. |
194 | * @lpfc_cmd: lpfc scsi command object pointer. | |
195 | * | |
196 | * This function is called when there is a command completion and this | |
197 | * function updates the statistical data for the command completion. | |
198 | **/ | |
199 | static void | |
200 | lpfc_update_stats(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) | |
201 | { | |
202 | struct lpfc_rport_data *rdata = lpfc_cmd->rdata; | |
203 | struct lpfc_nodelist *pnode = rdata->pnode; | |
204 | struct scsi_cmnd *cmd = lpfc_cmd->pCmd; | |
205 | unsigned long flags; | |
206 | struct Scsi_Host *shost = cmd->device->host; | |
207 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
208 | unsigned long latency; | |
209 | int i; | |
210 | ||
211 | if (cmd->result) | |
212 | return; | |
213 | ||
9f1e1b50 JS |
214 | latency = jiffies_to_msecs((long)jiffies - (long)lpfc_cmd->start_time); |
215 | ||
ea2151b4 JS |
216 | spin_lock_irqsave(shost->host_lock, flags); |
217 | if (!vport->stat_data_enabled || | |
218 | vport->stat_data_blocked || | |
5989b8d4 | 219 | !pnode || |
ea2151b4 JS |
220 | !pnode->lat_data || |
221 | (phba->bucket_type == LPFC_NO_BUCKET)) { | |
222 | spin_unlock_irqrestore(shost->host_lock, flags); | |
223 | return; | |
224 | } | |
ea2151b4 JS |
225 | |
226 | if (phba->bucket_type == LPFC_LINEAR_BUCKET) { | |
227 | i = (latency + phba->bucket_step - 1 - phba->bucket_base)/ | |
228 | phba->bucket_step; | |
9f1e1b50 JS |
229 | /* check array subscript bounds */ |
230 | if (i < 0) | |
231 | i = 0; | |
232 | else if (i >= LPFC_MAX_BUCKET_COUNT) | |
233 | i = LPFC_MAX_BUCKET_COUNT - 1; | |
ea2151b4 JS |
234 | } else { |
235 | for (i = 0; i < LPFC_MAX_BUCKET_COUNT-1; i++) | |
236 | if (latency <= (phba->bucket_base + | |
237 | ((1<<i)*phba->bucket_step))) | |
238 | break; | |
239 | } | |
240 | ||
241 | pnode->lat_data[i].cmd_count++; | |
242 | spin_unlock_irqrestore(shost->host_lock, flags); | |
243 | } | |
244 | ||
9bad7671 | 245 | /** |
3621a710 | 246 | * lpfc_rampdown_queue_depth - Post RAMP_DOWN_QUEUE event to worker thread |
9bad7671 JS |
247 | * @phba: The Hba for which this call is being executed. |
248 | * | |
249 | * This routine is called when there is resource error in driver or firmware. | |
250 | * This routine posts WORKER_RAMP_DOWN_QUEUE event for @phba. This routine | |
251 | * posts at most 1 event each second. This routine wakes up worker thread of | |
252 | * @phba to process WORKER_RAM_DOWN_EVENT event. | |
253 | * | |
254 | * This routine should be called with no lock held. | |
255 | **/ | |
92d7f7b0 | 256 | void |
eaf15d5b | 257 | lpfc_rampdown_queue_depth(struct lpfc_hba *phba) |
92d7f7b0 JS |
258 | { |
259 | unsigned long flags; | |
5e9d9b82 | 260 | uint32_t evt_posted; |
0d4aec13 | 261 | unsigned long expires; |
92d7f7b0 JS |
262 | |
263 | spin_lock_irqsave(&phba->hbalock, flags); | |
264 | atomic_inc(&phba->num_rsrc_err); | |
265 | phba->last_rsrc_error_time = jiffies; | |
266 | ||
0d4aec13 MS |
267 | expires = phba->last_ramp_down_time + QUEUE_RAMP_DOWN_INTERVAL; |
268 | if (time_after(expires, jiffies)) { | |
92d7f7b0 JS |
269 | spin_unlock_irqrestore(&phba->hbalock, flags); |
270 | return; | |
271 | } | |
272 | ||
273 | phba->last_ramp_down_time = jiffies; | |
274 | ||
275 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
276 | ||
277 | spin_lock_irqsave(&phba->pport->work_port_lock, flags); | |
5e9d9b82 JS |
278 | evt_posted = phba->pport->work_port_events & WORKER_RAMP_DOWN_QUEUE; |
279 | if (!evt_posted) | |
92d7f7b0 | 280 | phba->pport->work_port_events |= WORKER_RAMP_DOWN_QUEUE; |
92d7f7b0 JS |
281 | spin_unlock_irqrestore(&phba->pport->work_port_lock, flags); |
282 | ||
5e9d9b82 JS |
283 | if (!evt_posted) |
284 | lpfc_worker_wake_up(phba); | |
92d7f7b0 JS |
285 | return; |
286 | } | |
287 | ||
9bad7671 | 288 | /** |
3621a710 | 289 | * lpfc_ramp_down_queue_handler - WORKER_RAMP_DOWN_QUEUE event handler |
9bad7671 JS |
290 | * @phba: The Hba for which this call is being executed. |
291 | * | |
292 | * This routine is called to process WORKER_RAMP_DOWN_QUEUE event for worker | |
293 | * thread.This routine reduces queue depth for all scsi device on each vport | |
294 | * associated with @phba. | |
295 | **/ | |
92d7f7b0 JS |
296 | void |
297 | lpfc_ramp_down_queue_handler(struct lpfc_hba *phba) | |
298 | { | |
549e55cd JS |
299 | struct lpfc_vport **vports; |
300 | struct Scsi_Host *shost; | |
92d7f7b0 | 301 | struct scsi_device *sdev; |
5ffc266e | 302 | unsigned long new_queue_depth; |
92d7f7b0 | 303 | unsigned long num_rsrc_err, num_cmd_success; |
549e55cd | 304 | int i; |
92d7f7b0 JS |
305 | |
306 | num_rsrc_err = atomic_read(&phba->num_rsrc_err); | |
307 | num_cmd_success = atomic_read(&phba->num_cmd_success); | |
308 | ||
75ad83a4 JS |
309 | /* |
310 | * The error and success command counters are global per | |
311 | * driver instance. If another handler has already | |
312 | * operated on this error event, just exit. | |
313 | */ | |
314 | if (num_rsrc_err == 0) | |
315 | return; | |
316 | ||
549e55cd JS |
317 | vports = lpfc_create_vport_work_array(phba); |
318 | if (vports != NULL) | |
21e9a0a5 | 319 | for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { |
549e55cd JS |
320 | shost = lpfc_shost_from_vport(vports[i]); |
321 | shost_for_each_device(sdev, shost) { | |
92d7f7b0 | 322 | new_queue_depth = |
549e55cd JS |
323 | sdev->queue_depth * num_rsrc_err / |
324 | (num_rsrc_err + num_cmd_success); | |
325 | if (!new_queue_depth) | |
326 | new_queue_depth = sdev->queue_depth - 1; | |
327 | else | |
328 | new_queue_depth = sdev->queue_depth - | |
329 | new_queue_depth; | |
db5ed4df | 330 | scsi_change_queue_depth(sdev, new_queue_depth); |
549e55cd | 331 | } |
92d7f7b0 | 332 | } |
09372820 | 333 | lpfc_destroy_vport_work_array(phba, vports); |
92d7f7b0 JS |
334 | atomic_set(&phba->num_rsrc_err, 0); |
335 | atomic_set(&phba->num_cmd_success, 0); | |
336 | } | |
337 | ||
a8e497d5 | 338 | /** |
3621a710 | 339 | * lpfc_scsi_dev_block - set all scsi hosts to block state |
a8e497d5 JS |
340 | * @phba: Pointer to HBA context object. |
341 | * | |
342 | * This function walks vport list and set each SCSI host to block state | |
343 | * by invoking fc_remote_port_delete() routine. This function is invoked | |
344 | * with EEH when device's PCI slot has been permanently disabled. | |
345 | **/ | |
346 | void | |
347 | lpfc_scsi_dev_block(struct lpfc_hba *phba) | |
348 | { | |
349 | struct lpfc_vport **vports; | |
350 | struct Scsi_Host *shost; | |
351 | struct scsi_device *sdev; | |
352 | struct fc_rport *rport; | |
353 | int i; | |
354 | ||
355 | vports = lpfc_create_vport_work_array(phba); | |
356 | if (vports != NULL) | |
21e9a0a5 | 357 | for (i = 0; i <= phba->max_vports && vports[i] != NULL; i++) { |
a8e497d5 JS |
358 | shost = lpfc_shost_from_vport(vports[i]); |
359 | shost_for_each_device(sdev, shost) { | |
360 | rport = starget_to_rport(scsi_target(sdev)); | |
361 | fc_remote_port_delete(rport); | |
362 | } | |
363 | } | |
364 | lpfc_destroy_vport_work_array(phba, vports); | |
365 | } | |
366 | ||
9bad7671 | 367 | /** |
3772a991 | 368 | * lpfc_new_scsi_buf_s3 - Scsi buffer allocator for HBA with SLI3 IF spec |
9bad7671 | 369 | * @vport: The virtual port for which this call being executed. |
3772a991 | 370 | * @num_to_allocate: The requested number of buffers to allocate. |
9bad7671 | 371 | * |
3772a991 JS |
372 | * This routine allocates a scsi buffer for device with SLI-3 interface spec, |
373 | * the scsi buffer contains all the necessary information needed to initiate | |
374 | * a SCSI I/O. The non-DMAable buffer region contains information to build | |
375 | * the IOCB. The DMAable region contains memory for the FCP CMND, FCP RSP, | |
376 | * and the initial BPL. In addition to allocating memory, the FCP CMND and | |
377 | * FCP RSP BDEs are setup in the BPL and the BPL BDE is setup in the IOCB. | |
9bad7671 JS |
378 | * |
379 | * Return codes: | |
3772a991 JS |
380 | * int - number of scsi buffers that were allocated. |
381 | * 0 = failure, less than num_to_alloc is a partial failure. | |
9bad7671 | 382 | **/ |
3772a991 JS |
383 | static int |
384 | lpfc_new_scsi_buf_s3(struct lpfc_vport *vport, int num_to_alloc) | |
dea3101e | 385 | { |
2e0fef85 | 386 | struct lpfc_hba *phba = vport->phba; |
dea3101e | 387 | struct lpfc_scsi_buf *psb; |
388 | struct ulp_bde64 *bpl; | |
389 | IOCB_t *iocb; | |
34b02dcd JS |
390 | dma_addr_t pdma_phys_fcp_cmd; |
391 | dma_addr_t pdma_phys_fcp_rsp; | |
392 | dma_addr_t pdma_phys_bpl; | |
604a3e30 | 393 | uint16_t iotag; |
96f7077f JS |
394 | int bcnt, bpl_size; |
395 | ||
396 | bpl_size = phba->cfg_sg_dma_buf_size - | |
397 | (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp)); | |
398 | ||
399 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, | |
400 | "9067 ALLOC %d scsi_bufs: %d (%d + %d + %d)\n", | |
401 | num_to_alloc, phba->cfg_sg_dma_buf_size, | |
402 | (int)sizeof(struct fcp_cmnd), | |
403 | (int)sizeof(struct fcp_rsp), bpl_size); | |
dea3101e | 404 | |
3772a991 JS |
405 | for (bcnt = 0; bcnt < num_to_alloc; bcnt++) { |
406 | psb = kzalloc(sizeof(struct lpfc_scsi_buf), GFP_KERNEL); | |
407 | if (!psb) | |
408 | break; | |
dea3101e | 409 | |
3772a991 JS |
410 | /* |
411 | * Get memory from the pci pool to map the virt space to pci | |
412 | * bus space for an I/O. The DMA buffer includes space for the | |
413 | * struct fcp_cmnd, struct fcp_rsp and the number of bde's | |
414 | * necessary to support the sg_tablesize. | |
415 | */ | |
416 | psb->data = pci_pool_alloc(phba->lpfc_scsi_dma_buf_pool, | |
417 | GFP_KERNEL, &psb->dma_handle); | |
418 | if (!psb->data) { | |
419 | kfree(psb); | |
420 | break; | |
421 | } | |
422 | ||
423 | /* Initialize virtual ptrs to dma_buf region. */ | |
424 | memset(psb->data, 0, phba->cfg_sg_dma_buf_size); | |
425 | ||
426 | /* Allocate iotag for psb->cur_iocbq. */ | |
427 | iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq); | |
428 | if (iotag == 0) { | |
429 | pci_pool_free(phba->lpfc_scsi_dma_buf_pool, | |
430 | psb->data, psb->dma_handle); | |
431 | kfree(psb); | |
432 | break; | |
433 | } | |
434 | psb->cur_iocbq.iocb_flag |= LPFC_IO_FCP; | |
435 | ||
436 | psb->fcp_cmnd = psb->data; | |
437 | psb->fcp_rsp = psb->data + sizeof(struct fcp_cmnd); | |
438 | psb->fcp_bpl = psb->data + sizeof(struct fcp_cmnd) + | |
34b02dcd | 439 | sizeof(struct fcp_rsp); |
dea3101e | 440 | |
3772a991 JS |
441 | /* Initialize local short-hand pointers. */ |
442 | bpl = psb->fcp_bpl; | |
443 | pdma_phys_fcp_cmd = psb->dma_handle; | |
444 | pdma_phys_fcp_rsp = psb->dma_handle + sizeof(struct fcp_cmnd); | |
445 | pdma_phys_bpl = psb->dma_handle + sizeof(struct fcp_cmnd) + | |
446 | sizeof(struct fcp_rsp); | |
447 | ||
448 | /* | |
449 | * The first two bdes are the FCP_CMD and FCP_RSP. The balance | |
450 | * are sg list bdes. Initialize the first two and leave the | |
451 | * rest for queuecommand. | |
452 | */ | |
453 | bpl[0].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_cmd)); | |
454 | bpl[0].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_cmd)); | |
455 | bpl[0].tus.f.bdeSize = sizeof(struct fcp_cmnd); | |
456 | bpl[0].tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
457 | bpl[0].tus.w = le32_to_cpu(bpl[0].tus.w); | |
458 | ||
459 | /* Setup the physical region for the FCP RSP */ | |
460 | bpl[1].addrHigh = le32_to_cpu(putPaddrHigh(pdma_phys_fcp_rsp)); | |
461 | bpl[1].addrLow = le32_to_cpu(putPaddrLow(pdma_phys_fcp_rsp)); | |
462 | bpl[1].tus.f.bdeSize = sizeof(struct fcp_rsp); | |
463 | bpl[1].tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
464 | bpl[1].tus.w = le32_to_cpu(bpl[1].tus.w); | |
465 | ||
466 | /* | |
467 | * Since the IOCB for the FCP I/O is built into this | |
468 | * lpfc_scsi_buf, initialize it with all known data now. | |
469 | */ | |
470 | iocb = &psb->cur_iocbq.iocb; | |
471 | iocb->un.fcpi64.bdl.ulpIoTag32 = 0; | |
472 | if ((phba->sli_rev == 3) && | |
473 | !(phba->sli3_options & LPFC_SLI3_BG_ENABLED)) { | |
474 | /* fill in immediate fcp command BDE */ | |
475 | iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_IMMED; | |
476 | iocb->un.fcpi64.bdl.bdeSize = sizeof(struct fcp_cmnd); | |
477 | iocb->un.fcpi64.bdl.addrLow = offsetof(IOCB_t, | |
478 | unsli3.fcp_ext.icd); | |
479 | iocb->un.fcpi64.bdl.addrHigh = 0; | |
480 | iocb->ulpBdeCount = 0; | |
481 | iocb->ulpLe = 0; | |
25985edc | 482 | /* fill in response BDE */ |
3772a991 JS |
483 | iocb->unsli3.fcp_ext.rbde.tus.f.bdeFlags = |
484 | BUFF_TYPE_BDE_64; | |
485 | iocb->unsli3.fcp_ext.rbde.tus.f.bdeSize = | |
486 | sizeof(struct fcp_rsp); | |
487 | iocb->unsli3.fcp_ext.rbde.addrLow = | |
488 | putPaddrLow(pdma_phys_fcp_rsp); | |
489 | iocb->unsli3.fcp_ext.rbde.addrHigh = | |
490 | putPaddrHigh(pdma_phys_fcp_rsp); | |
491 | } else { | |
492 | iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BLP_64; | |
493 | iocb->un.fcpi64.bdl.bdeSize = | |
494 | (2 * sizeof(struct ulp_bde64)); | |
495 | iocb->un.fcpi64.bdl.addrLow = | |
496 | putPaddrLow(pdma_phys_bpl); | |
497 | iocb->un.fcpi64.bdl.addrHigh = | |
498 | putPaddrHigh(pdma_phys_bpl); | |
499 | iocb->ulpBdeCount = 1; | |
500 | iocb->ulpLe = 1; | |
501 | } | |
502 | iocb->ulpClass = CLASS3; | |
503 | psb->status = IOSTAT_SUCCESS; | |
da0436e9 | 504 | /* Put it back into the SCSI buffer list */ |
eee8877e | 505 | psb->cur_iocbq.context1 = psb; |
1c6f4ef5 | 506 | lpfc_release_scsi_buf_s3(phba, psb); |
dea3101e | 507 | |
34b02dcd | 508 | } |
dea3101e | 509 | |
3772a991 | 510 | return bcnt; |
dea3101e | 511 | } |
512 | ||
1151e3ec JS |
513 | /** |
514 | * lpfc_sli4_vport_delete_fcp_xri_aborted -Remove all ndlp references for vport | |
515 | * @vport: pointer to lpfc vport data structure. | |
516 | * | |
517 | * This routine is invoked by the vport cleanup for deletions and the cleanup | |
518 | * for an ndlp on removal. | |
519 | **/ | |
520 | void | |
521 | lpfc_sli4_vport_delete_fcp_xri_aborted(struct lpfc_vport *vport) | |
522 | { | |
523 | struct lpfc_hba *phba = vport->phba; | |
524 | struct lpfc_scsi_buf *psb, *next_psb; | |
525 | unsigned long iflag = 0; | |
526 | ||
527 | spin_lock_irqsave(&phba->hbalock, iflag); | |
528 | spin_lock(&phba->sli4_hba.abts_scsi_buf_list_lock); | |
529 | list_for_each_entry_safe(psb, next_psb, | |
530 | &phba->sli4_hba.lpfc_abts_scsi_buf_list, list) { | |
531 | if (psb->rdata && psb->rdata->pnode | |
532 | && psb->rdata->pnode->vport == vport) | |
533 | psb->rdata = NULL; | |
534 | } | |
535 | spin_unlock(&phba->sli4_hba.abts_scsi_buf_list_lock); | |
536 | spin_unlock_irqrestore(&phba->hbalock, iflag); | |
537 | } | |
538 | ||
da0436e9 JS |
539 | /** |
540 | * lpfc_sli4_fcp_xri_aborted - Fast-path process of fcp xri abort | |
541 | * @phba: pointer to lpfc hba data structure. | |
542 | * @axri: pointer to the fcp xri abort wcqe structure. | |
543 | * | |
544 | * This routine is invoked by the worker thread to process a SLI4 fast-path | |
545 | * FCP aborted xri. | |
546 | **/ | |
547 | void | |
548 | lpfc_sli4_fcp_xri_aborted(struct lpfc_hba *phba, | |
549 | struct sli4_wcqe_xri_aborted *axri) | |
550 | { | |
551 | uint16_t xri = bf_get(lpfc_wcqe_xa_xri, axri); | |
19ca7609 | 552 | uint16_t rxid = bf_get(lpfc_wcqe_xa_remote_xid, axri); |
da0436e9 JS |
553 | struct lpfc_scsi_buf *psb, *next_psb; |
554 | unsigned long iflag = 0; | |
0f65ff68 JS |
555 | struct lpfc_iocbq *iocbq; |
556 | int i; | |
19ca7609 JS |
557 | struct lpfc_nodelist *ndlp; |
558 | int rrq_empty = 0; | |
589a52d6 | 559 | struct lpfc_sli_ring *pring = &phba->sli.ring[LPFC_ELS_RING]; |
da0436e9 | 560 | |
0f65ff68 JS |
561 | spin_lock_irqsave(&phba->hbalock, iflag); |
562 | spin_lock(&phba->sli4_hba.abts_scsi_buf_list_lock); | |
da0436e9 JS |
563 | list_for_each_entry_safe(psb, next_psb, |
564 | &phba->sli4_hba.lpfc_abts_scsi_buf_list, list) { | |
565 | if (psb->cur_iocbq.sli4_xritag == xri) { | |
566 | list_del(&psb->list); | |
341af102 | 567 | psb->exch_busy = 0; |
da0436e9 | 568 | psb->status = IOSTAT_SUCCESS; |
0f65ff68 JS |
569 | spin_unlock( |
570 | &phba->sli4_hba.abts_scsi_buf_list_lock); | |
1151e3ec JS |
571 | if (psb->rdata && psb->rdata->pnode) |
572 | ndlp = psb->rdata->pnode; | |
573 | else | |
574 | ndlp = NULL; | |
575 | ||
19ca7609 | 576 | rrq_empty = list_empty(&phba->active_rrq_list); |
0f65ff68 | 577 | spin_unlock_irqrestore(&phba->hbalock, iflag); |
cb69f7de | 578 | if (ndlp) { |
ee0f4fe1 JS |
579 | lpfc_set_rrq_active(phba, ndlp, |
580 | psb->cur_iocbq.sli4_lxritag, rxid, 1); | |
cb69f7de JS |
581 | lpfc_sli4_abts_err_handler(phba, ndlp, axri); |
582 | } | |
da0436e9 | 583 | lpfc_release_scsi_buf_s4(phba, psb); |
19ca7609 JS |
584 | if (rrq_empty) |
585 | lpfc_worker_wake_up(phba); | |
da0436e9 JS |
586 | return; |
587 | } | |
588 | } | |
0f65ff68 JS |
589 | spin_unlock(&phba->sli4_hba.abts_scsi_buf_list_lock); |
590 | for (i = 1; i <= phba->sli.last_iotag; i++) { | |
591 | iocbq = phba->sli.iocbq_lookup[i]; | |
592 | ||
593 | if (!(iocbq->iocb_flag & LPFC_IO_FCP) || | |
594 | (iocbq->iocb_flag & LPFC_IO_LIBDFC)) | |
595 | continue; | |
596 | if (iocbq->sli4_xritag != xri) | |
597 | continue; | |
598 | psb = container_of(iocbq, struct lpfc_scsi_buf, cur_iocbq); | |
599 | psb->exch_busy = 0; | |
600 | spin_unlock_irqrestore(&phba->hbalock, iflag); | |
0e9bb8d7 | 601 | if (!list_empty(&pring->txq)) |
589a52d6 | 602 | lpfc_worker_wake_up(phba); |
0f65ff68 JS |
603 | return; |
604 | ||
605 | } | |
606 | spin_unlock_irqrestore(&phba->hbalock, iflag); | |
da0436e9 JS |
607 | } |
608 | ||
609 | /** | |
8a9d2e80 | 610 | * lpfc_sli4_post_scsi_sgl_list - Psot blocks of scsi buffer sgls from a list |
da0436e9 | 611 | * @phba: pointer to lpfc hba data structure. |
8a9d2e80 | 612 | * @post_sblist: pointer to the scsi buffer list. |
da0436e9 | 613 | * |
8a9d2e80 JS |
614 | * This routine walks a list of scsi buffers that was passed in. It attempts |
615 | * to construct blocks of scsi buffer sgls which contains contiguous xris and | |
616 | * uses the non-embedded SGL block post mailbox commands to post to the port. | |
617 | * For single SCSI buffer sgl with non-contiguous xri, if any, it shall use | |
618 | * embedded SGL post mailbox command for posting. The @post_sblist passed in | |
619 | * must be local list, thus no lock is needed when manipulate the list. | |
da0436e9 | 620 | * |
8a9d2e80 | 621 | * Returns: 0 = failure, non-zero number of successfully posted buffers. |
da0436e9 | 622 | **/ |
7bfe781e | 623 | static int |
8a9d2e80 JS |
624 | lpfc_sli4_post_scsi_sgl_list(struct lpfc_hba *phba, |
625 | struct list_head *post_sblist, int sb_count) | |
da0436e9 | 626 | { |
8a9d2e80 | 627 | struct lpfc_scsi_buf *psb, *psb_next; |
96f7077f | 628 | int status, sgl_size; |
8a9d2e80 JS |
629 | int post_cnt = 0, block_cnt = 0, num_posting = 0, num_posted = 0; |
630 | dma_addr_t pdma_phys_bpl1; | |
631 | int last_xritag = NO_XRI; | |
632 | LIST_HEAD(prep_sblist); | |
633 | LIST_HEAD(blck_sblist); | |
634 | LIST_HEAD(scsi_sblist); | |
635 | ||
636 | /* sanity check */ | |
637 | if (sb_count <= 0) | |
638 | return -EINVAL; | |
639 | ||
96f7077f JS |
640 | sgl_size = phba->cfg_sg_dma_buf_size - |
641 | (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp)); | |
642 | ||
8a9d2e80 JS |
643 | list_for_each_entry_safe(psb, psb_next, post_sblist, list) { |
644 | list_del_init(&psb->list); | |
645 | block_cnt++; | |
646 | if ((last_xritag != NO_XRI) && | |
647 | (psb->cur_iocbq.sli4_xritag != last_xritag + 1)) { | |
648 | /* a hole in xri block, form a sgl posting block */ | |
649 | list_splice_init(&prep_sblist, &blck_sblist); | |
650 | post_cnt = block_cnt - 1; | |
651 | /* prepare list for next posting block */ | |
652 | list_add_tail(&psb->list, &prep_sblist); | |
653 | block_cnt = 1; | |
654 | } else { | |
655 | /* prepare list for next posting block */ | |
656 | list_add_tail(&psb->list, &prep_sblist); | |
657 | /* enough sgls for non-embed sgl mbox command */ | |
658 | if (block_cnt == LPFC_NEMBED_MBOX_SGL_CNT) { | |
659 | list_splice_init(&prep_sblist, &blck_sblist); | |
660 | post_cnt = block_cnt; | |
661 | block_cnt = 0; | |
da0436e9 | 662 | } |
8a9d2e80 JS |
663 | } |
664 | num_posting++; | |
665 | last_xritag = psb->cur_iocbq.sli4_xritag; | |
da0436e9 | 666 | |
8a9d2e80 JS |
667 | /* end of repost sgl list condition for SCSI buffers */ |
668 | if (num_posting == sb_count) { | |
669 | if (post_cnt == 0) { | |
670 | /* last sgl posting block */ | |
671 | list_splice_init(&prep_sblist, &blck_sblist); | |
672 | post_cnt = block_cnt; | |
673 | } else if (block_cnt == 1) { | |
674 | /* last single sgl with non-contiguous xri */ | |
96f7077f | 675 | if (sgl_size > SGL_PAGE_SIZE) |
8a9d2e80 JS |
676 | pdma_phys_bpl1 = psb->dma_phys_bpl + |
677 | SGL_PAGE_SIZE; | |
678 | else | |
679 | pdma_phys_bpl1 = 0; | |
680 | status = lpfc_sli4_post_sgl(phba, | |
681 | psb->dma_phys_bpl, | |
682 | pdma_phys_bpl1, | |
683 | psb->cur_iocbq.sli4_xritag); | |
684 | if (status) { | |
685 | /* failure, put on abort scsi list */ | |
686 | psb->exch_busy = 1; | |
687 | } else { | |
688 | /* success, put on SCSI buffer list */ | |
689 | psb->exch_busy = 0; | |
690 | psb->status = IOSTAT_SUCCESS; | |
691 | num_posted++; | |
692 | } | |
693 | /* success, put on SCSI buffer sgl list */ | |
694 | list_add_tail(&psb->list, &scsi_sblist); | |
695 | } | |
696 | } | |
da0436e9 | 697 | |
8a9d2e80 JS |
698 | /* continue until a nembed page worth of sgls */ |
699 | if (post_cnt == 0) | |
da0436e9 | 700 | continue; |
8a9d2e80 JS |
701 | |
702 | /* post block of SCSI buffer list sgls */ | |
703 | status = lpfc_sli4_post_scsi_sgl_block(phba, &blck_sblist, | |
704 | post_cnt); | |
705 | ||
706 | /* don't reset xirtag due to hole in xri block */ | |
707 | if (block_cnt == 0) | |
708 | last_xritag = NO_XRI; | |
709 | ||
710 | /* reset SCSI buffer post count for next round of posting */ | |
711 | post_cnt = 0; | |
712 | ||
713 | /* put posted SCSI buffer-sgl posted on SCSI buffer sgl list */ | |
714 | while (!list_empty(&blck_sblist)) { | |
715 | list_remove_head(&blck_sblist, psb, | |
716 | struct lpfc_scsi_buf, list); | |
da0436e9 | 717 | if (status) { |
8a9d2e80 | 718 | /* failure, put on abort scsi list */ |
341af102 | 719 | psb->exch_busy = 1; |
341af102 | 720 | } else { |
8a9d2e80 | 721 | /* success, put on SCSI buffer list */ |
341af102 | 722 | psb->exch_busy = 0; |
da0436e9 | 723 | psb->status = IOSTAT_SUCCESS; |
8a9d2e80 | 724 | num_posted++; |
341af102 | 725 | } |
8a9d2e80 | 726 | list_add_tail(&psb->list, &scsi_sblist); |
da0436e9 JS |
727 | } |
728 | } | |
8a9d2e80 JS |
729 | /* Push SCSI buffers with sgl posted to the availble list */ |
730 | while (!list_empty(&scsi_sblist)) { | |
731 | list_remove_head(&scsi_sblist, psb, | |
732 | struct lpfc_scsi_buf, list); | |
733 | lpfc_release_scsi_buf_s4(phba, psb); | |
734 | } | |
735 | return num_posted; | |
736 | } | |
737 | ||
738 | /** | |
739 | * lpfc_sli4_repost_scsi_sgl_list - Repsot all the allocated scsi buffer sgls | |
740 | * @phba: pointer to lpfc hba data structure. | |
741 | * | |
742 | * This routine walks the list of scsi buffers that have been allocated and | |
743 | * repost them to the port by using SGL block post. This is needed after a | |
744 | * pci_function_reset/warm_start or start. The lpfc_hba_down_post_s4 routine | |
745 | * is responsible for moving all scsi buffers on the lpfc_abts_scsi_sgl_list | |
746 | * to the lpfc_scsi_buf_list. If the repost fails, reject all scsi buffers. | |
747 | * | |
748 | * Returns: 0 = success, non-zero failure. | |
749 | **/ | |
750 | int | |
751 | lpfc_sli4_repost_scsi_sgl_list(struct lpfc_hba *phba) | |
752 | { | |
753 | LIST_HEAD(post_sblist); | |
754 | int num_posted, rc = 0; | |
755 | ||
756 | /* get all SCSI buffers need to repost to a local list */ | |
a40fc5f0 | 757 | spin_lock_irq(&phba->scsi_buf_list_get_lock); |
164cecd1 | 758 | spin_lock(&phba->scsi_buf_list_put_lock); |
a40fc5f0 JS |
759 | list_splice_init(&phba->lpfc_scsi_buf_list_get, &post_sblist); |
760 | list_splice(&phba->lpfc_scsi_buf_list_put, &post_sblist); | |
164cecd1 | 761 | spin_unlock(&phba->scsi_buf_list_put_lock); |
a40fc5f0 | 762 | spin_unlock_irq(&phba->scsi_buf_list_get_lock); |
8a9d2e80 JS |
763 | |
764 | /* post the list of scsi buffer sgls to port if available */ | |
765 | if (!list_empty(&post_sblist)) { | |
766 | num_posted = lpfc_sli4_post_scsi_sgl_list(phba, &post_sblist, | |
767 | phba->sli4_hba.scsi_xri_cnt); | |
768 | /* failed to post any scsi buffer, return error */ | |
769 | if (num_posted == 0) | |
770 | rc = -EIO; | |
771 | } | |
da0436e9 JS |
772 | return rc; |
773 | } | |
774 | ||
775 | /** | |
776 | * lpfc_new_scsi_buf_s4 - Scsi buffer allocator for HBA with SLI4 IF spec | |
777 | * @vport: The virtual port for which this call being executed. | |
778 | * @num_to_allocate: The requested number of buffers to allocate. | |
779 | * | |
8a9d2e80 | 780 | * This routine allocates scsi buffers for device with SLI-4 interface spec, |
da0436e9 | 781 | * the scsi buffer contains all the necessary information needed to initiate |
8a9d2e80 JS |
782 | * a SCSI I/O. After allocating up to @num_to_allocate SCSI buffers and put |
783 | * them on a list, it post them to the port by using SGL block post. | |
da0436e9 JS |
784 | * |
785 | * Return codes: | |
8a9d2e80 | 786 | * int - number of scsi buffers that were allocated and posted. |
da0436e9 JS |
787 | * 0 = failure, less than num_to_alloc is a partial failure. |
788 | **/ | |
789 | static int | |
790 | lpfc_new_scsi_buf_s4(struct lpfc_vport *vport, int num_to_alloc) | |
791 | { | |
792 | struct lpfc_hba *phba = vport->phba; | |
793 | struct lpfc_scsi_buf *psb; | |
794 | struct sli4_sge *sgl; | |
795 | IOCB_t *iocb; | |
796 | dma_addr_t pdma_phys_fcp_cmd; | |
797 | dma_addr_t pdma_phys_fcp_rsp; | |
96f7077f | 798 | dma_addr_t pdma_phys_bpl; |
8a9d2e80 | 799 | uint16_t iotag, lxri = 0; |
96f7077f | 800 | int bcnt, num_posted, sgl_size; |
8a9d2e80 JS |
801 | LIST_HEAD(prep_sblist); |
802 | LIST_HEAD(post_sblist); | |
803 | LIST_HEAD(scsi_sblist); | |
da0436e9 | 804 | |
96f7077f JS |
805 | sgl_size = phba->cfg_sg_dma_buf_size - |
806 | (sizeof(struct fcp_cmnd) + sizeof(struct fcp_rsp)); | |
807 | ||
808 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, | |
809 | "9068 ALLOC %d scsi_bufs: %d (%d + %d + %d)\n", | |
810 | num_to_alloc, phba->cfg_sg_dma_buf_size, sgl_size, | |
811 | (int)sizeof(struct fcp_cmnd), | |
812 | (int)sizeof(struct fcp_rsp)); | |
813 | ||
da0436e9 JS |
814 | for (bcnt = 0; bcnt < num_to_alloc; bcnt++) { |
815 | psb = kzalloc(sizeof(struct lpfc_scsi_buf), GFP_KERNEL); | |
816 | if (!psb) | |
817 | break; | |
da0436e9 | 818 | /* |
8a9d2e80 JS |
819 | * Get memory from the pci pool to map the virt space to |
820 | * pci bus space for an I/O. The DMA buffer includes space | |
821 | * for the struct fcp_cmnd, struct fcp_rsp and the number | |
822 | * of bde's necessary to support the sg_tablesize. | |
da0436e9 JS |
823 | */ |
824 | psb->data = pci_pool_alloc(phba->lpfc_scsi_dma_buf_pool, | |
825 | GFP_KERNEL, &psb->dma_handle); | |
826 | if (!psb->data) { | |
827 | kfree(psb); | |
828 | break; | |
829 | } | |
da0436e9 JS |
830 | memset(psb->data, 0, phba->cfg_sg_dma_buf_size); |
831 | ||
092cb034 JS |
832 | /* |
833 | * 4K Page alignment is CRITICAL to BlockGuard, double check | |
834 | * to be sure. | |
835 | */ | |
836 | if (phba->cfg_enable_bg && (((unsigned long)(psb->data) & | |
837 | (unsigned long)(SLI4_PAGE_SIZE - 1)) != 0)) { | |
96f7077f JS |
838 | pci_pool_free(phba->lpfc_scsi_dma_buf_pool, |
839 | psb->data, psb->dma_handle); | |
840 | kfree(psb); | |
841 | break; | |
842 | } | |
843 | ||
f7bc6434 JS |
844 | |
845 | lxri = lpfc_sli4_next_xritag(phba); | |
846 | if (lxri == NO_XRI) { | |
b92938b4 | 847 | pci_pool_free(phba->lpfc_scsi_dma_buf_pool, |
f7bc6434 | 848 | psb->data, psb->dma_handle); |
da0436e9 JS |
849 | kfree(psb); |
850 | break; | |
851 | } | |
852 | ||
f7bc6434 JS |
853 | /* Allocate iotag for psb->cur_iocbq. */ |
854 | iotag = lpfc_sli_next_iotag(phba, &psb->cur_iocbq); | |
855 | if (iotag == 0) { | |
da0436e9 | 856 | pci_pool_free(phba->lpfc_scsi_dma_buf_pool, |
f7bc6434 | 857 | psb->data, psb->dma_handle); |
da0436e9 | 858 | kfree(psb); |
f7bc6434 JS |
859 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, |
860 | "3368 Failed to allocated IOTAG for" | |
861 | " XRI:0x%x\n", lxri); | |
862 | lpfc_sli4_free_xri(phba, lxri); | |
da0436e9 JS |
863 | break; |
864 | } | |
6d368e53 JS |
865 | psb->cur_iocbq.sli4_lxritag = lxri; |
866 | psb->cur_iocbq.sli4_xritag = phba->sli4_hba.xri_ids[lxri]; | |
da0436e9 | 867 | psb->cur_iocbq.iocb_flag |= LPFC_IO_FCP; |
da0436e9 | 868 | psb->fcp_bpl = psb->data; |
96f7077f | 869 | psb->fcp_cmnd = (psb->data + sgl_size); |
da0436e9 JS |
870 | psb->fcp_rsp = (struct fcp_rsp *)((uint8_t *)psb->fcp_cmnd + |
871 | sizeof(struct fcp_cmnd)); | |
872 | ||
873 | /* Initialize local short-hand pointers. */ | |
874 | sgl = (struct sli4_sge *)psb->fcp_bpl; | |
875 | pdma_phys_bpl = psb->dma_handle; | |
96f7077f | 876 | pdma_phys_fcp_cmd = (psb->dma_handle + sgl_size); |
da0436e9 JS |
877 | pdma_phys_fcp_rsp = pdma_phys_fcp_cmd + sizeof(struct fcp_cmnd); |
878 | ||
879 | /* | |
8a9d2e80 JS |
880 | * The first two bdes are the FCP_CMD and FCP_RSP. |
881 | * The balance are sg list bdes. Initialize the | |
882 | * first two and leave the rest for queuecommand. | |
da0436e9 JS |
883 | */ |
884 | sgl->addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_fcp_cmd)); | |
885 | sgl->addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_fcp_cmd)); | |
0558056c | 886 | sgl->word2 = le32_to_cpu(sgl->word2); |
da0436e9 JS |
887 | bf_set(lpfc_sli4_sge_last, sgl, 0); |
888 | sgl->word2 = cpu_to_le32(sgl->word2); | |
28baac74 | 889 | sgl->sge_len = cpu_to_le32(sizeof(struct fcp_cmnd)); |
da0436e9 JS |
890 | sgl++; |
891 | ||
892 | /* Setup the physical region for the FCP RSP */ | |
893 | sgl->addr_hi = cpu_to_le32(putPaddrHigh(pdma_phys_fcp_rsp)); | |
894 | sgl->addr_lo = cpu_to_le32(putPaddrLow(pdma_phys_fcp_rsp)); | |
0558056c | 895 | sgl->word2 = le32_to_cpu(sgl->word2); |
da0436e9 JS |
896 | bf_set(lpfc_sli4_sge_last, sgl, 1); |
897 | sgl->word2 = cpu_to_le32(sgl->word2); | |
28baac74 | 898 | sgl->sge_len = cpu_to_le32(sizeof(struct fcp_rsp)); |
da0436e9 JS |
899 | |
900 | /* | |
901 | * Since the IOCB for the FCP I/O is built into this | |
902 | * lpfc_scsi_buf, initialize it with all known data now. | |
903 | */ | |
904 | iocb = &psb->cur_iocbq.iocb; | |
905 | iocb->un.fcpi64.bdl.ulpIoTag32 = 0; | |
906 | iocb->un.fcpi64.bdl.bdeFlags = BUFF_TYPE_BDE_64; | |
907 | /* setting the BLP size to 2 * sizeof BDE may not be correct. | |
908 | * We are setting the bpl to point to out sgl. An sgl's | |
909 | * entries are 16 bytes, a bpl entries are 12 bytes. | |
910 | */ | |
911 | iocb->un.fcpi64.bdl.bdeSize = sizeof(struct fcp_cmnd); | |
912 | iocb->un.fcpi64.bdl.addrLow = putPaddrLow(pdma_phys_fcp_cmd); | |
913 | iocb->un.fcpi64.bdl.addrHigh = putPaddrHigh(pdma_phys_fcp_cmd); | |
914 | iocb->ulpBdeCount = 1; | |
915 | iocb->ulpLe = 1; | |
916 | iocb->ulpClass = CLASS3; | |
8a9d2e80 | 917 | psb->cur_iocbq.context1 = psb; |
da0436e9 | 918 | psb->dma_phys_bpl = pdma_phys_bpl; |
da0436e9 | 919 | |
8a9d2e80 JS |
920 | /* add the scsi buffer to a post list */ |
921 | list_add_tail(&psb->list, &post_sblist); | |
a40fc5f0 | 922 | spin_lock_irq(&phba->scsi_buf_list_get_lock); |
8a9d2e80 | 923 | phba->sli4_hba.scsi_xri_cnt++; |
a40fc5f0 | 924 | spin_unlock_irq(&phba->scsi_buf_list_get_lock); |
8a9d2e80 JS |
925 | } |
926 | lpfc_printf_log(phba, KERN_INFO, LOG_BG, | |
927 | "3021 Allocate %d out of %d requested new SCSI " | |
928 | "buffers\n", bcnt, num_to_alloc); | |
929 | ||
930 | /* post the list of scsi buffer sgls to port if available */ | |
931 | if (!list_empty(&post_sblist)) | |
932 | num_posted = lpfc_sli4_post_scsi_sgl_list(phba, | |
933 | &post_sblist, bcnt); | |
934 | else | |
935 | num_posted = 0; | |
936 | ||
937 | return num_posted; | |
da0436e9 JS |
938 | } |
939 | ||
9bad7671 | 940 | /** |
3772a991 JS |
941 | * lpfc_new_scsi_buf - Wrapper funciton for scsi buffer allocator |
942 | * @vport: The virtual port for which this call being executed. | |
943 | * @num_to_allocate: The requested number of buffers to allocate. | |
944 | * | |
945 | * This routine wraps the actual SCSI buffer allocator function pointer from | |
946 | * the lpfc_hba struct. | |
947 | * | |
948 | * Return codes: | |
949 | * int - number of scsi buffers that were allocated. | |
950 | * 0 = failure, less than num_to_alloc is a partial failure. | |
951 | **/ | |
952 | static inline int | |
953 | lpfc_new_scsi_buf(struct lpfc_vport *vport, int num_to_alloc) | |
954 | { | |
955 | return vport->phba->lpfc_new_scsi_buf(vport, num_to_alloc); | |
956 | } | |
957 | ||
958 | /** | |
19ca7609 | 959 | * lpfc_get_scsi_buf_s3 - Get a scsi buffer from lpfc_scsi_buf_list of the HBA |
3772a991 | 960 | * @phba: The HBA for which this call is being executed. |
9bad7671 JS |
961 | * |
962 | * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list | |
963 | * and returns to caller. | |
964 | * | |
965 | * Return codes: | |
966 | * NULL - Error | |
967 | * Pointer to lpfc_scsi_buf - Success | |
968 | **/ | |
455c53ec | 969 | static struct lpfc_scsi_buf* |
19ca7609 | 970 | lpfc_get_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) |
dea3101e | 971 | { |
0bd4ca25 | 972 | struct lpfc_scsi_buf * lpfc_cmd = NULL; |
a40fc5f0 | 973 | struct list_head *scsi_buf_list_get = &phba->lpfc_scsi_buf_list_get; |
164cecd1 | 974 | unsigned long iflag = 0; |
a40fc5f0 | 975 | |
164cecd1 | 976 | spin_lock_irqsave(&phba->scsi_buf_list_get_lock, iflag); |
a40fc5f0 JS |
977 | list_remove_head(scsi_buf_list_get, lpfc_cmd, struct lpfc_scsi_buf, |
978 | list); | |
979 | if (!lpfc_cmd) { | |
164cecd1 | 980 | spin_lock(&phba->scsi_buf_list_put_lock); |
a40fc5f0 JS |
981 | list_splice(&phba->lpfc_scsi_buf_list_put, |
982 | &phba->lpfc_scsi_buf_list_get); | |
983 | INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list_put); | |
984 | list_remove_head(scsi_buf_list_get, lpfc_cmd, | |
985 | struct lpfc_scsi_buf, list); | |
164cecd1 | 986 | spin_unlock(&phba->scsi_buf_list_put_lock); |
1dcb58e5 | 987 | } |
164cecd1 | 988 | spin_unlock_irqrestore(&phba->scsi_buf_list_get_lock, iflag); |
0bd4ca25 JSEC |
989 | return lpfc_cmd; |
990 | } | |
19ca7609 JS |
991 | /** |
992 | * lpfc_get_scsi_buf_s4 - Get a scsi buffer from lpfc_scsi_buf_list of the HBA | |
993 | * @phba: The HBA for which this call is being executed. | |
994 | * | |
995 | * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list | |
996 | * and returns to caller. | |
997 | * | |
998 | * Return codes: | |
999 | * NULL - Error | |
1000 | * Pointer to lpfc_scsi_buf - Success | |
1001 | **/ | |
1002 | static struct lpfc_scsi_buf* | |
1003 | lpfc_get_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) | |
1004 | { | |
3be30e0e | 1005 | struct lpfc_scsi_buf *lpfc_cmd, *lpfc_cmd_next; |
164cecd1 | 1006 | unsigned long iflag = 0; |
19ca7609 JS |
1007 | int found = 0; |
1008 | ||
164cecd1 | 1009 | spin_lock_irqsave(&phba->scsi_buf_list_get_lock, iflag); |
3be30e0e JS |
1010 | list_for_each_entry_safe(lpfc_cmd, lpfc_cmd_next, |
1011 | &phba->lpfc_scsi_buf_list_get, list) { | |
19ca7609 | 1012 | if (lpfc_test_rrq_active(phba, ndlp, |
ee0f4fe1 | 1013 | lpfc_cmd->cur_iocbq.sli4_lxritag)) |
1151e3ec JS |
1014 | continue; |
1015 | list_del(&lpfc_cmd->list); | |
19ca7609 | 1016 | found = 1; |
1151e3ec | 1017 | break; |
19ca7609 | 1018 | } |
a40fc5f0 | 1019 | if (!found) { |
164cecd1 | 1020 | spin_lock(&phba->scsi_buf_list_put_lock); |
a40fc5f0 JS |
1021 | list_splice(&phba->lpfc_scsi_buf_list_put, |
1022 | &phba->lpfc_scsi_buf_list_get); | |
1023 | INIT_LIST_HEAD(&phba->lpfc_scsi_buf_list_put); | |
164cecd1 | 1024 | spin_unlock(&phba->scsi_buf_list_put_lock); |
3be30e0e JS |
1025 | list_for_each_entry_safe(lpfc_cmd, lpfc_cmd_next, |
1026 | &phba->lpfc_scsi_buf_list_get, list) { | |
a40fc5f0 JS |
1027 | if (lpfc_test_rrq_active( |
1028 | phba, ndlp, lpfc_cmd->cur_iocbq.sli4_lxritag)) | |
1029 | continue; | |
1030 | list_del(&lpfc_cmd->list); | |
1031 | found = 1; | |
1032 | break; | |
1033 | } | |
1034 | } | |
164cecd1 | 1035 | spin_unlock_irqrestore(&phba->scsi_buf_list_get_lock, iflag); |
1151e3ec JS |
1036 | if (!found) |
1037 | return NULL; | |
a40fc5f0 | 1038 | return lpfc_cmd; |
19ca7609 JS |
1039 | } |
1040 | /** | |
1041 | * lpfc_get_scsi_buf - Get a scsi buffer from lpfc_scsi_buf_list of the HBA | |
1042 | * @phba: The HBA for which this call is being executed. | |
1043 | * | |
1044 | * This routine removes a scsi buffer from head of @phba lpfc_scsi_buf_list list | |
1045 | * and returns to caller. | |
1046 | * | |
1047 | * Return codes: | |
1048 | * NULL - Error | |
1049 | * Pointer to lpfc_scsi_buf - Success | |
1050 | **/ | |
1051 | static struct lpfc_scsi_buf* | |
1052 | lpfc_get_scsi_buf(struct lpfc_hba *phba, struct lpfc_nodelist *ndlp) | |
1053 | { | |
1054 | return phba->lpfc_get_scsi_buf(phba, ndlp); | |
1055 | } | |
dea3101e | 1056 | |
9bad7671 | 1057 | /** |
3772a991 | 1058 | * lpfc_release_scsi_buf - Return a scsi buffer back to hba scsi buf list |
9bad7671 JS |
1059 | * @phba: The Hba for which this call is being executed. |
1060 | * @psb: The scsi buffer which is being released. | |
1061 | * | |
1062 | * This routine releases @psb scsi buffer by adding it to tail of @phba | |
1063 | * lpfc_scsi_buf_list list. | |
1064 | **/ | |
0bd4ca25 | 1065 | static void |
3772a991 | 1066 | lpfc_release_scsi_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb) |
0bd4ca25 | 1067 | { |
875fbdfe | 1068 | unsigned long iflag = 0; |
dea3101e | 1069 | |
a40fc5f0 JS |
1070 | psb->seg_cnt = 0; |
1071 | psb->nonsg_phys = 0; | |
1072 | psb->prot_seg_cnt = 0; | |
1073 | ||
1074 | spin_lock_irqsave(&phba->scsi_buf_list_put_lock, iflag); | |
0bd4ca25 | 1075 | psb->pCmd = NULL; |
6a485eb9 | 1076 | psb->cur_iocbq.iocb_flag = LPFC_IO_FCP; |
a40fc5f0 JS |
1077 | list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list_put); |
1078 | spin_unlock_irqrestore(&phba->scsi_buf_list_put_lock, iflag); | |
dea3101e | 1079 | } |
1080 | ||
da0436e9 JS |
1081 | /** |
1082 | * lpfc_release_scsi_buf_s4: Return a scsi buffer back to hba scsi buf list. | |
1083 | * @phba: The Hba for which this call is being executed. | |
1084 | * @psb: The scsi buffer which is being released. | |
1085 | * | |
1086 | * This routine releases @psb scsi buffer by adding it to tail of @phba | |
1087 | * lpfc_scsi_buf_list list. For SLI4 XRI's are tied to the scsi buffer | |
1088 | * and cannot be reused for at least RA_TOV amount of time if it was | |
1089 | * aborted. | |
1090 | **/ | |
1091 | static void | |
1092 | lpfc_release_scsi_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb) | |
1093 | { | |
1094 | unsigned long iflag = 0; | |
1095 | ||
a40fc5f0 JS |
1096 | psb->seg_cnt = 0; |
1097 | psb->nonsg_phys = 0; | |
1098 | psb->prot_seg_cnt = 0; | |
1099 | ||
341af102 | 1100 | if (psb->exch_busy) { |
da0436e9 JS |
1101 | spin_lock_irqsave(&phba->sli4_hba.abts_scsi_buf_list_lock, |
1102 | iflag); | |
1103 | psb->pCmd = NULL; | |
1104 | list_add_tail(&psb->list, | |
1105 | &phba->sli4_hba.lpfc_abts_scsi_buf_list); | |
1106 | spin_unlock_irqrestore(&phba->sli4_hba.abts_scsi_buf_list_lock, | |
1107 | iflag); | |
1108 | } else { | |
da0436e9 | 1109 | psb->pCmd = NULL; |
6a485eb9 | 1110 | psb->cur_iocbq.iocb_flag = LPFC_IO_FCP; |
a40fc5f0 JS |
1111 | spin_lock_irqsave(&phba->scsi_buf_list_put_lock, iflag); |
1112 | list_add_tail(&psb->list, &phba->lpfc_scsi_buf_list_put); | |
1113 | spin_unlock_irqrestore(&phba->scsi_buf_list_put_lock, iflag); | |
da0436e9 JS |
1114 | } |
1115 | } | |
1116 | ||
9bad7671 | 1117 | /** |
3772a991 JS |
1118 | * lpfc_release_scsi_buf: Return a scsi buffer back to hba scsi buf list. |
1119 | * @phba: The Hba for which this call is being executed. | |
1120 | * @psb: The scsi buffer which is being released. | |
1121 | * | |
1122 | * This routine releases @psb scsi buffer by adding it to tail of @phba | |
1123 | * lpfc_scsi_buf_list list. | |
1124 | **/ | |
1125 | static void | |
1126 | lpfc_release_scsi_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb) | |
1127 | { | |
1128 | ||
1129 | phba->lpfc_release_scsi_buf(phba, psb); | |
1130 | } | |
1131 | ||
1132 | /** | |
1133 | * lpfc_scsi_prep_dma_buf_s3 - DMA mapping for scsi buffer to SLI3 IF spec | |
9bad7671 JS |
1134 | * @phba: The Hba for which this call is being executed. |
1135 | * @lpfc_cmd: The scsi buffer which is going to be mapped. | |
1136 | * | |
1137 | * This routine does the pci dma mapping for scatter-gather list of scsi cmnd | |
3772a991 JS |
1138 | * field of @lpfc_cmd for device with SLI-3 interface spec. This routine scans |
1139 | * through sg elements and format the bdea. This routine also initializes all | |
1140 | * IOCB fields which are dependent on scsi command request buffer. | |
9bad7671 JS |
1141 | * |
1142 | * Return codes: | |
1143 | * 1 - Error | |
1144 | * 0 - Success | |
1145 | **/ | |
dea3101e | 1146 | static int |
3772a991 | 1147 | lpfc_scsi_prep_dma_buf_s3(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) |
dea3101e | 1148 | { |
1149 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; | |
1150 | struct scatterlist *sgel = NULL; | |
1151 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
1152 | struct ulp_bde64 *bpl = lpfc_cmd->fcp_bpl; | |
0f65ff68 | 1153 | struct lpfc_iocbq *iocbq = &lpfc_cmd->cur_iocbq; |
dea3101e | 1154 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; |
34b02dcd | 1155 | struct ulp_bde64 *data_bde = iocb_cmd->unsli3.fcp_ext.dbde; |
dea3101e | 1156 | dma_addr_t physaddr; |
34b02dcd | 1157 | uint32_t num_bde = 0; |
a0b4f78f | 1158 | int nseg, datadir = scsi_cmnd->sc_data_direction; |
dea3101e | 1159 | |
1160 | /* | |
1161 | * There are three possibilities here - use scatter-gather segment, use | |
1162 | * the single mapping, or neither. Start the lpfc command prep by | |
1163 | * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first | |
1164 | * data bde entry. | |
1165 | */ | |
1166 | bpl += 2; | |
c59fd9eb | 1167 | if (scsi_sg_count(scsi_cmnd)) { |
dea3101e | 1168 | /* |
1169 | * The driver stores the segment count returned from pci_map_sg | |
1170 | * because this a count of dma-mappings used to map the use_sg | |
1171 | * pages. They are not guaranteed to be the same for those | |
1172 | * architectures that implement an IOMMU. | |
1173 | */ | |
dea3101e | 1174 | |
c59fd9eb FT |
1175 | nseg = dma_map_sg(&phba->pcidev->dev, scsi_sglist(scsi_cmnd), |
1176 | scsi_sg_count(scsi_cmnd), datadir); | |
1177 | if (unlikely(!nseg)) | |
1178 | return 1; | |
1179 | ||
a0b4f78f | 1180 | lpfc_cmd->seg_cnt = nseg; |
dea3101e | 1181 | if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { |
6a9c52cf JS |
1182 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1183 | "9064 BLKGRD: %s: Too many sg segments from " | |
e2a0a9d6 | 1184 | "dma_map_sg. Config %d, seg_cnt %d\n", |
cadbd4a5 | 1185 | __func__, phba->cfg_sg_seg_cnt, |
dea3101e | 1186 | lpfc_cmd->seg_cnt); |
96f7077f | 1187 | lpfc_cmd->seg_cnt = 0; |
a0b4f78f | 1188 | scsi_dma_unmap(scsi_cmnd); |
dea3101e | 1189 | return 1; |
1190 | } | |
1191 | ||
1192 | /* | |
1193 | * The driver established a maximum scatter-gather segment count | |
1194 | * during probe that limits the number of sg elements in any | |
1195 | * single scsi command. Just run through the seg_cnt and format | |
1196 | * the bde's. | |
34b02dcd JS |
1197 | * When using SLI-3 the driver will try to fit all the BDEs into |
1198 | * the IOCB. If it can't then the BDEs get added to a BPL as it | |
1199 | * does for SLI-2 mode. | |
dea3101e | 1200 | */ |
34b02dcd | 1201 | scsi_for_each_sg(scsi_cmnd, sgel, nseg, num_bde) { |
dea3101e | 1202 | physaddr = sg_dma_address(sgel); |
34b02dcd | 1203 | if (phba->sli_rev == 3 && |
e2a0a9d6 | 1204 | !(phba->sli3_options & LPFC_SLI3_BG_ENABLED) && |
0f65ff68 | 1205 | !(iocbq->iocb_flag & DSS_SECURITY_OP) && |
34b02dcd JS |
1206 | nseg <= LPFC_EXT_DATA_BDE_COUNT) { |
1207 | data_bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
1208 | data_bde->tus.f.bdeSize = sg_dma_len(sgel); | |
1209 | data_bde->addrLow = putPaddrLow(physaddr); | |
1210 | data_bde->addrHigh = putPaddrHigh(physaddr); | |
1211 | data_bde++; | |
1212 | } else { | |
1213 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
1214 | bpl->tus.f.bdeSize = sg_dma_len(sgel); | |
1215 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
1216 | bpl->addrLow = | |
1217 | le32_to_cpu(putPaddrLow(physaddr)); | |
1218 | bpl->addrHigh = | |
1219 | le32_to_cpu(putPaddrHigh(physaddr)); | |
1220 | bpl++; | |
1221 | } | |
dea3101e | 1222 | } |
c59fd9eb | 1223 | } |
dea3101e | 1224 | |
1225 | /* | |
1226 | * Finish initializing those IOCB fields that are dependent on the | |
34b02dcd JS |
1227 | * scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is |
1228 | * explicitly reinitialized and for SLI-3 the extended bde count is | |
1229 | * explicitly reinitialized since all iocb memory resources are reused. | |
dea3101e | 1230 | */ |
e2a0a9d6 | 1231 | if (phba->sli_rev == 3 && |
0f65ff68 JS |
1232 | !(phba->sli3_options & LPFC_SLI3_BG_ENABLED) && |
1233 | !(iocbq->iocb_flag & DSS_SECURITY_OP)) { | |
34b02dcd JS |
1234 | if (num_bde > LPFC_EXT_DATA_BDE_COUNT) { |
1235 | /* | |
1236 | * The extended IOCB format can only fit 3 BDE or a BPL. | |
1237 | * This I/O has more than 3 BDE so the 1st data bde will | |
1238 | * be a BPL that is filled in here. | |
1239 | */ | |
1240 | physaddr = lpfc_cmd->dma_handle; | |
1241 | data_bde->tus.f.bdeFlags = BUFF_TYPE_BLP_64; | |
1242 | data_bde->tus.f.bdeSize = (num_bde * | |
1243 | sizeof(struct ulp_bde64)); | |
1244 | physaddr += (sizeof(struct fcp_cmnd) + | |
1245 | sizeof(struct fcp_rsp) + | |
1246 | (2 * sizeof(struct ulp_bde64))); | |
1247 | data_bde->addrHigh = putPaddrHigh(physaddr); | |
1248 | data_bde->addrLow = putPaddrLow(physaddr); | |
25985edc | 1249 | /* ebde count includes the response bde and data bpl */ |
34b02dcd JS |
1250 | iocb_cmd->unsli3.fcp_ext.ebde_count = 2; |
1251 | } else { | |
25985edc | 1252 | /* ebde count includes the response bde and data bdes */ |
34b02dcd JS |
1253 | iocb_cmd->unsli3.fcp_ext.ebde_count = (num_bde + 1); |
1254 | } | |
1255 | } else { | |
1256 | iocb_cmd->un.fcpi64.bdl.bdeSize = | |
1257 | ((num_bde + 2) * sizeof(struct ulp_bde64)); | |
0f65ff68 | 1258 | iocb_cmd->unsli3.fcp_ext.ebde_count = (num_bde + 1); |
34b02dcd | 1259 | } |
09372820 | 1260 | fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd)); |
e2a0a9d6 JS |
1261 | |
1262 | /* | |
1263 | * Due to difference in data length between DIF/non-DIF paths, | |
1264 | * we need to set word 4 of IOCB here | |
1265 | */ | |
a257bf90 | 1266 | iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd); |
e2a0a9d6 JS |
1267 | return 0; |
1268 | } | |
1269 | ||
f9bb2da1 | 1270 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
acd6859b | 1271 | |
9a6b09c0 JS |
1272 | /* Return if if error injection is detected by Initiator */ |
1273 | #define BG_ERR_INIT 0x1 | |
1274 | /* Return if if error injection is detected by Target */ | |
1275 | #define BG_ERR_TGT 0x2 | |
1276 | /* Return if if swapping CSUM<-->CRC is required for error injection */ | |
1277 | #define BG_ERR_SWAP 0x10 | |
1278 | /* Return if disabling Guard/Ref/App checking is required for error injection */ | |
1279 | #define BG_ERR_CHECK 0x20 | |
acd6859b JS |
1280 | |
1281 | /** | |
1282 | * lpfc_bg_err_inject - Determine if we should inject an error | |
1283 | * @phba: The Hba for which this call is being executed. | |
f9bb2da1 JS |
1284 | * @sc: The SCSI command to examine |
1285 | * @reftag: (out) BlockGuard reference tag for transmitted data | |
1286 | * @apptag: (out) BlockGuard application tag for transmitted data | |
1287 | * @new_guard (in) Value to replace CRC with if needed | |
1288 | * | |
9a6b09c0 | 1289 | * Returns BG_ERR_* bit mask or 0 if request ignored |
acd6859b | 1290 | **/ |
f9bb2da1 JS |
1291 | static int |
1292 | lpfc_bg_err_inject(struct lpfc_hba *phba, struct scsi_cmnd *sc, | |
1293 | uint32_t *reftag, uint16_t *apptag, uint32_t new_guard) | |
1294 | { | |
1295 | struct scatterlist *sgpe; /* s/g prot entry */ | |
1296 | struct scatterlist *sgde; /* s/g data entry */ | |
9a6b09c0 | 1297 | struct lpfc_scsi_buf *lpfc_cmd = NULL; |
acd6859b | 1298 | struct scsi_dif_tuple *src = NULL; |
4ac9b226 JS |
1299 | struct lpfc_nodelist *ndlp; |
1300 | struct lpfc_rport_data *rdata; | |
f9bb2da1 JS |
1301 | uint32_t op = scsi_get_prot_op(sc); |
1302 | uint32_t blksize; | |
1303 | uint32_t numblks; | |
1304 | sector_t lba; | |
1305 | int rc = 0; | |
acd6859b | 1306 | int blockoff = 0; |
f9bb2da1 JS |
1307 | |
1308 | if (op == SCSI_PROT_NORMAL) | |
1309 | return 0; | |
1310 | ||
acd6859b JS |
1311 | sgpe = scsi_prot_sglist(sc); |
1312 | sgde = scsi_sglist(sc); | |
f9bb2da1 | 1313 | lba = scsi_get_lba(sc); |
4ac9b226 JS |
1314 | |
1315 | /* First check if we need to match the LBA */ | |
f9bb2da1 JS |
1316 | if (phba->lpfc_injerr_lba != LPFC_INJERR_LBA_OFF) { |
1317 | blksize = lpfc_cmd_blksize(sc); | |
1318 | numblks = (scsi_bufflen(sc) + blksize - 1) / blksize; | |
1319 | ||
1320 | /* Make sure we have the right LBA if one is specified */ | |
1321 | if ((phba->lpfc_injerr_lba < lba) || | |
1322 | (phba->lpfc_injerr_lba >= (lba + numblks))) | |
1323 | return 0; | |
acd6859b JS |
1324 | if (sgpe) { |
1325 | blockoff = phba->lpfc_injerr_lba - lba; | |
1326 | numblks = sg_dma_len(sgpe) / | |
1327 | sizeof(struct scsi_dif_tuple); | |
1328 | if (numblks < blockoff) | |
1329 | blockoff = numblks; | |
acd6859b | 1330 | } |
f9bb2da1 JS |
1331 | } |
1332 | ||
4ac9b226 | 1333 | /* Next check if we need to match the remote NPortID or WWPN */ |
1ba981fd | 1334 | rdata = lpfc_rport_data_from_scsi_device(sc->device); |
4ac9b226 JS |
1335 | if (rdata && rdata->pnode) { |
1336 | ndlp = rdata->pnode; | |
1337 | ||
1338 | /* Make sure we have the right NPortID if one is specified */ | |
1339 | if (phba->lpfc_injerr_nportid && | |
1340 | (phba->lpfc_injerr_nportid != ndlp->nlp_DID)) | |
1341 | return 0; | |
1342 | ||
1343 | /* | |
1344 | * Make sure we have the right WWPN if one is specified. | |
1345 | * wwn[0] should be a non-zero NAA in a good WWPN. | |
1346 | */ | |
1347 | if (phba->lpfc_injerr_wwpn.u.wwn[0] && | |
1348 | (memcmp(&ndlp->nlp_portname, &phba->lpfc_injerr_wwpn, | |
1349 | sizeof(struct lpfc_name)) != 0)) | |
1350 | return 0; | |
1351 | } | |
1352 | ||
1353 | /* Setup a ptr to the protection data if the SCSI host provides it */ | |
1354 | if (sgpe) { | |
1355 | src = (struct scsi_dif_tuple *)sg_virt(sgpe); | |
1356 | src += blockoff; | |
1357 | lpfc_cmd = (struct lpfc_scsi_buf *)sc->host_scribble; | |
1358 | } | |
1359 | ||
f9bb2da1 JS |
1360 | /* Should we change the Reference Tag */ |
1361 | if (reftag) { | |
acd6859b JS |
1362 | if (phba->lpfc_injerr_wref_cnt) { |
1363 | switch (op) { | |
1364 | case SCSI_PROT_WRITE_PASS: | |
9a6b09c0 JS |
1365 | if (src) { |
1366 | /* | |
1367 | * For WRITE_PASS, force the error | |
1368 | * to be sent on the wire. It should | |
1369 | * be detected by the Target. | |
1370 | * If blockoff != 0 error will be | |
1371 | * inserted in middle of the IO. | |
1372 | */ | |
acd6859b JS |
1373 | |
1374 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, | |
1375 | "9076 BLKGRD: Injecting reftag error: " | |
1376 | "write lba x%lx + x%x oldrefTag x%x\n", | |
1377 | (unsigned long)lba, blockoff, | |
9a6b09c0 | 1378 | be32_to_cpu(src->ref_tag)); |
f9bb2da1 | 1379 | |
acd6859b | 1380 | /* |
9a6b09c0 JS |
1381 | * Save the old ref_tag so we can |
1382 | * restore it on completion. | |
acd6859b | 1383 | */ |
9a6b09c0 JS |
1384 | if (lpfc_cmd) { |
1385 | lpfc_cmd->prot_data_type = | |
1386 | LPFC_INJERR_REFTAG; | |
1387 | lpfc_cmd->prot_data_segment = | |
1388 | src; | |
1389 | lpfc_cmd->prot_data = | |
1390 | src->ref_tag; | |
1391 | } | |
1392 | src->ref_tag = cpu_to_be32(0xDEADBEEF); | |
acd6859b | 1393 | phba->lpfc_injerr_wref_cnt--; |
4ac9b226 JS |
1394 | if (phba->lpfc_injerr_wref_cnt == 0) { |
1395 | phba->lpfc_injerr_nportid = 0; | |
1396 | phba->lpfc_injerr_lba = | |
1397 | LPFC_INJERR_LBA_OFF; | |
1398 | memset(&phba->lpfc_injerr_wwpn, | |
1399 | 0, sizeof(struct lpfc_name)); | |
1400 | } | |
9a6b09c0 JS |
1401 | rc = BG_ERR_TGT | BG_ERR_CHECK; |
1402 | ||
acd6859b JS |
1403 | break; |
1404 | } | |
1405 | /* Drop thru */ | |
9a6b09c0 | 1406 | case SCSI_PROT_WRITE_INSERT: |
acd6859b | 1407 | /* |
9a6b09c0 JS |
1408 | * For WRITE_INSERT, force the error |
1409 | * to be sent on the wire. It should be | |
1410 | * detected by the Target. | |
acd6859b | 1411 | */ |
9a6b09c0 | 1412 | /* DEADBEEF will be the reftag on the wire */ |
acd6859b JS |
1413 | *reftag = 0xDEADBEEF; |
1414 | phba->lpfc_injerr_wref_cnt--; | |
4ac9b226 JS |
1415 | if (phba->lpfc_injerr_wref_cnt == 0) { |
1416 | phba->lpfc_injerr_nportid = 0; | |
1417 | phba->lpfc_injerr_lba = | |
1418 | LPFC_INJERR_LBA_OFF; | |
1419 | memset(&phba->lpfc_injerr_wwpn, | |
1420 | 0, sizeof(struct lpfc_name)); | |
1421 | } | |
9a6b09c0 | 1422 | rc = BG_ERR_TGT | BG_ERR_CHECK; |
acd6859b JS |
1423 | |
1424 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, | |
9a6b09c0 | 1425 | "9078 BLKGRD: Injecting reftag error: " |
acd6859b JS |
1426 | "write lba x%lx\n", (unsigned long)lba); |
1427 | break; | |
9a6b09c0 | 1428 | case SCSI_PROT_WRITE_STRIP: |
acd6859b | 1429 | /* |
9a6b09c0 JS |
1430 | * For WRITE_STRIP and WRITE_PASS, |
1431 | * force the error on data | |
1432 | * being copied from SLI-Host to SLI-Port. | |
acd6859b | 1433 | */ |
f9bb2da1 JS |
1434 | *reftag = 0xDEADBEEF; |
1435 | phba->lpfc_injerr_wref_cnt--; | |
4ac9b226 JS |
1436 | if (phba->lpfc_injerr_wref_cnt == 0) { |
1437 | phba->lpfc_injerr_nportid = 0; | |
1438 | phba->lpfc_injerr_lba = | |
1439 | LPFC_INJERR_LBA_OFF; | |
1440 | memset(&phba->lpfc_injerr_wwpn, | |
1441 | 0, sizeof(struct lpfc_name)); | |
1442 | } | |
9a6b09c0 | 1443 | rc = BG_ERR_INIT; |
f9bb2da1 JS |
1444 | |
1445 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, | |
9a6b09c0 | 1446 | "9077 BLKGRD: Injecting reftag error: " |
f9bb2da1 | 1447 | "write lba x%lx\n", (unsigned long)lba); |
acd6859b | 1448 | break; |
f9bb2da1 | 1449 | } |
acd6859b JS |
1450 | } |
1451 | if (phba->lpfc_injerr_rref_cnt) { | |
1452 | switch (op) { | |
1453 | case SCSI_PROT_READ_INSERT: | |
acd6859b JS |
1454 | case SCSI_PROT_READ_STRIP: |
1455 | case SCSI_PROT_READ_PASS: | |
1456 | /* | |
1457 | * For READ_STRIP and READ_PASS, force the | |
1458 | * error on data being read off the wire. It | |
1459 | * should force an IO error to the driver. | |
1460 | */ | |
f9bb2da1 JS |
1461 | *reftag = 0xDEADBEEF; |
1462 | phba->lpfc_injerr_rref_cnt--; | |
4ac9b226 JS |
1463 | if (phba->lpfc_injerr_rref_cnt == 0) { |
1464 | phba->lpfc_injerr_nportid = 0; | |
1465 | phba->lpfc_injerr_lba = | |
1466 | LPFC_INJERR_LBA_OFF; | |
1467 | memset(&phba->lpfc_injerr_wwpn, | |
1468 | 0, sizeof(struct lpfc_name)); | |
1469 | } | |
acd6859b | 1470 | rc = BG_ERR_INIT; |
f9bb2da1 JS |
1471 | |
1472 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, | |
acd6859b | 1473 | "9079 BLKGRD: Injecting reftag error: " |
f9bb2da1 | 1474 | "read lba x%lx\n", (unsigned long)lba); |
acd6859b | 1475 | break; |
f9bb2da1 JS |
1476 | } |
1477 | } | |
1478 | } | |
1479 | ||
1480 | /* Should we change the Application Tag */ | |
1481 | if (apptag) { | |
acd6859b JS |
1482 | if (phba->lpfc_injerr_wapp_cnt) { |
1483 | switch (op) { | |
1484 | case SCSI_PROT_WRITE_PASS: | |
4ac9b226 | 1485 | if (src) { |
9a6b09c0 JS |
1486 | /* |
1487 | * For WRITE_PASS, force the error | |
1488 | * to be sent on the wire. It should | |
1489 | * be detected by the Target. | |
1490 | * If blockoff != 0 error will be | |
1491 | * inserted in middle of the IO. | |
1492 | */ | |
1493 | ||
acd6859b JS |
1494 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
1495 | "9080 BLKGRD: Injecting apptag error: " | |
1496 | "write lba x%lx + x%x oldappTag x%x\n", | |
1497 | (unsigned long)lba, blockoff, | |
9a6b09c0 | 1498 | be16_to_cpu(src->app_tag)); |
acd6859b JS |
1499 | |
1500 | /* | |
9a6b09c0 JS |
1501 | * Save the old app_tag so we can |
1502 | * restore it on completion. | |
acd6859b | 1503 | */ |
9a6b09c0 JS |
1504 | if (lpfc_cmd) { |
1505 | lpfc_cmd->prot_data_type = | |
1506 | LPFC_INJERR_APPTAG; | |
1507 | lpfc_cmd->prot_data_segment = | |
1508 | src; | |
1509 | lpfc_cmd->prot_data = | |
1510 | src->app_tag; | |
1511 | } | |
1512 | src->app_tag = cpu_to_be16(0xDEAD); | |
acd6859b | 1513 | phba->lpfc_injerr_wapp_cnt--; |
4ac9b226 JS |
1514 | if (phba->lpfc_injerr_wapp_cnt == 0) { |
1515 | phba->lpfc_injerr_nportid = 0; | |
1516 | phba->lpfc_injerr_lba = | |
1517 | LPFC_INJERR_LBA_OFF; | |
1518 | memset(&phba->lpfc_injerr_wwpn, | |
1519 | 0, sizeof(struct lpfc_name)); | |
1520 | } | |
9a6b09c0 | 1521 | rc = BG_ERR_TGT | BG_ERR_CHECK; |
acd6859b JS |
1522 | break; |
1523 | } | |
1524 | /* Drop thru */ | |
9a6b09c0 | 1525 | case SCSI_PROT_WRITE_INSERT: |
acd6859b | 1526 | /* |
9a6b09c0 JS |
1527 | * For WRITE_INSERT, force the |
1528 | * error to be sent on the wire. It should be | |
1529 | * detected by the Target. | |
acd6859b | 1530 | */ |
9a6b09c0 | 1531 | /* DEAD will be the apptag on the wire */ |
acd6859b JS |
1532 | *apptag = 0xDEAD; |
1533 | phba->lpfc_injerr_wapp_cnt--; | |
4ac9b226 JS |
1534 | if (phba->lpfc_injerr_wapp_cnt == 0) { |
1535 | phba->lpfc_injerr_nportid = 0; | |
1536 | phba->lpfc_injerr_lba = | |
1537 | LPFC_INJERR_LBA_OFF; | |
1538 | memset(&phba->lpfc_injerr_wwpn, | |
1539 | 0, sizeof(struct lpfc_name)); | |
1540 | } | |
9a6b09c0 | 1541 | rc = BG_ERR_TGT | BG_ERR_CHECK; |
f9bb2da1 | 1542 | |
acd6859b | 1543 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
9a6b09c0 | 1544 | "0813 BLKGRD: Injecting apptag error: " |
acd6859b JS |
1545 | "write lba x%lx\n", (unsigned long)lba); |
1546 | break; | |
9a6b09c0 | 1547 | case SCSI_PROT_WRITE_STRIP: |
acd6859b | 1548 | /* |
9a6b09c0 JS |
1549 | * For WRITE_STRIP and WRITE_PASS, |
1550 | * force the error on data | |
1551 | * being copied from SLI-Host to SLI-Port. | |
acd6859b | 1552 | */ |
f9bb2da1 JS |
1553 | *apptag = 0xDEAD; |
1554 | phba->lpfc_injerr_wapp_cnt--; | |
4ac9b226 JS |
1555 | if (phba->lpfc_injerr_wapp_cnt == 0) { |
1556 | phba->lpfc_injerr_nportid = 0; | |
1557 | phba->lpfc_injerr_lba = | |
1558 | LPFC_INJERR_LBA_OFF; | |
1559 | memset(&phba->lpfc_injerr_wwpn, | |
1560 | 0, sizeof(struct lpfc_name)); | |
1561 | } | |
9a6b09c0 | 1562 | rc = BG_ERR_INIT; |
f9bb2da1 JS |
1563 | |
1564 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, | |
9a6b09c0 | 1565 | "0812 BLKGRD: Injecting apptag error: " |
f9bb2da1 | 1566 | "write lba x%lx\n", (unsigned long)lba); |
acd6859b | 1567 | break; |
f9bb2da1 | 1568 | } |
acd6859b JS |
1569 | } |
1570 | if (phba->lpfc_injerr_rapp_cnt) { | |
1571 | switch (op) { | |
1572 | case SCSI_PROT_READ_INSERT: | |
acd6859b JS |
1573 | case SCSI_PROT_READ_STRIP: |
1574 | case SCSI_PROT_READ_PASS: | |
1575 | /* | |
1576 | * For READ_STRIP and READ_PASS, force the | |
1577 | * error on data being read off the wire. It | |
1578 | * should force an IO error to the driver. | |
1579 | */ | |
f9bb2da1 JS |
1580 | *apptag = 0xDEAD; |
1581 | phba->lpfc_injerr_rapp_cnt--; | |
4ac9b226 JS |
1582 | if (phba->lpfc_injerr_rapp_cnt == 0) { |
1583 | phba->lpfc_injerr_nportid = 0; | |
1584 | phba->lpfc_injerr_lba = | |
1585 | LPFC_INJERR_LBA_OFF; | |
1586 | memset(&phba->lpfc_injerr_wwpn, | |
1587 | 0, sizeof(struct lpfc_name)); | |
1588 | } | |
acd6859b | 1589 | rc = BG_ERR_INIT; |
f9bb2da1 JS |
1590 | |
1591 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, | |
acd6859b | 1592 | "0814 BLKGRD: Injecting apptag error: " |
f9bb2da1 | 1593 | "read lba x%lx\n", (unsigned long)lba); |
acd6859b | 1594 | break; |
f9bb2da1 JS |
1595 | } |
1596 | } | |
1597 | } | |
1598 | ||
acd6859b | 1599 | |
f9bb2da1 | 1600 | /* Should we change the Guard Tag */ |
acd6859b JS |
1601 | if (new_guard) { |
1602 | if (phba->lpfc_injerr_wgrd_cnt) { | |
1603 | switch (op) { | |
1604 | case SCSI_PROT_WRITE_PASS: | |
9a6b09c0 | 1605 | rc = BG_ERR_CHECK; |
acd6859b | 1606 | /* Drop thru */ |
9a6b09c0 JS |
1607 | |
1608 | case SCSI_PROT_WRITE_INSERT: | |
acd6859b | 1609 | /* |
9a6b09c0 JS |
1610 | * For WRITE_INSERT, force the |
1611 | * error to be sent on the wire. It should be | |
1612 | * detected by the Target. | |
acd6859b JS |
1613 | */ |
1614 | phba->lpfc_injerr_wgrd_cnt--; | |
4ac9b226 JS |
1615 | if (phba->lpfc_injerr_wgrd_cnt == 0) { |
1616 | phba->lpfc_injerr_nportid = 0; | |
1617 | phba->lpfc_injerr_lba = | |
1618 | LPFC_INJERR_LBA_OFF; | |
1619 | memset(&phba->lpfc_injerr_wwpn, | |
1620 | 0, sizeof(struct lpfc_name)); | |
1621 | } | |
f9bb2da1 | 1622 | |
9a6b09c0 | 1623 | rc |= BG_ERR_TGT | BG_ERR_SWAP; |
acd6859b | 1624 | /* Signals the caller to swap CRC->CSUM */ |
f9bb2da1 | 1625 | |
acd6859b | 1626 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
9a6b09c0 | 1627 | "0817 BLKGRD: Injecting guard error: " |
acd6859b JS |
1628 | "write lba x%lx\n", (unsigned long)lba); |
1629 | break; | |
9a6b09c0 | 1630 | case SCSI_PROT_WRITE_STRIP: |
acd6859b | 1631 | /* |
9a6b09c0 JS |
1632 | * For WRITE_STRIP and WRITE_PASS, |
1633 | * force the error on data | |
1634 | * being copied from SLI-Host to SLI-Port. | |
acd6859b JS |
1635 | */ |
1636 | phba->lpfc_injerr_wgrd_cnt--; | |
4ac9b226 JS |
1637 | if (phba->lpfc_injerr_wgrd_cnt == 0) { |
1638 | phba->lpfc_injerr_nportid = 0; | |
1639 | phba->lpfc_injerr_lba = | |
1640 | LPFC_INJERR_LBA_OFF; | |
1641 | memset(&phba->lpfc_injerr_wwpn, | |
1642 | 0, sizeof(struct lpfc_name)); | |
1643 | } | |
f9bb2da1 | 1644 | |
9a6b09c0 | 1645 | rc = BG_ERR_INIT | BG_ERR_SWAP; |
acd6859b JS |
1646 | /* Signals the caller to swap CRC->CSUM */ |
1647 | ||
1648 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, | |
9a6b09c0 | 1649 | "0816 BLKGRD: Injecting guard error: " |
acd6859b JS |
1650 | "write lba x%lx\n", (unsigned long)lba); |
1651 | break; | |
1652 | } | |
1653 | } | |
1654 | if (phba->lpfc_injerr_rgrd_cnt) { | |
1655 | switch (op) { | |
1656 | case SCSI_PROT_READ_INSERT: | |
acd6859b JS |
1657 | case SCSI_PROT_READ_STRIP: |
1658 | case SCSI_PROT_READ_PASS: | |
1659 | /* | |
1660 | * For READ_STRIP and READ_PASS, force the | |
1661 | * error on data being read off the wire. It | |
1662 | * should force an IO error to the driver. | |
1663 | */ | |
acd6859b | 1664 | phba->lpfc_injerr_rgrd_cnt--; |
4ac9b226 JS |
1665 | if (phba->lpfc_injerr_rgrd_cnt == 0) { |
1666 | phba->lpfc_injerr_nportid = 0; | |
1667 | phba->lpfc_injerr_lba = | |
1668 | LPFC_INJERR_LBA_OFF; | |
1669 | memset(&phba->lpfc_injerr_wwpn, | |
1670 | 0, sizeof(struct lpfc_name)); | |
1671 | } | |
acd6859b | 1672 | |
9a6b09c0 | 1673 | rc = BG_ERR_INIT | BG_ERR_SWAP; |
acd6859b JS |
1674 | /* Signals the caller to swap CRC->CSUM */ |
1675 | ||
1676 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, | |
1677 | "0818 BLKGRD: Injecting guard error: " | |
1678 | "read lba x%lx\n", (unsigned long)lba); | |
1679 | } | |
f9bb2da1 JS |
1680 | } |
1681 | } | |
acd6859b | 1682 | |
f9bb2da1 JS |
1683 | return rc; |
1684 | } | |
1685 | #endif | |
1686 | ||
acd6859b JS |
1687 | /** |
1688 | * lpfc_sc_to_bg_opcodes - Determine the BlockGuard opcodes to be used with | |
1689 | * the specified SCSI command. | |
1690 | * @phba: The Hba for which this call is being executed. | |
6c8eea54 JS |
1691 | * @sc: The SCSI command to examine |
1692 | * @txopt: (out) BlockGuard operation for transmitted data | |
1693 | * @rxopt: (out) BlockGuard operation for received data | |
1694 | * | |
1695 | * Returns: zero on success; non-zero if tx and/or rx op cannot be determined | |
1696 | * | |
acd6859b | 1697 | **/ |
e2a0a9d6 | 1698 | static int |
6c8eea54 JS |
1699 | lpfc_sc_to_bg_opcodes(struct lpfc_hba *phba, struct scsi_cmnd *sc, |
1700 | uint8_t *txop, uint8_t *rxop) | |
e2a0a9d6 | 1701 | { |
6c8eea54 | 1702 | uint8_t ret = 0; |
e2a0a9d6 | 1703 | |
9c6aa9d7 | 1704 | if (lpfc_cmd_guard_csum(sc)) { |
e2a0a9d6 JS |
1705 | switch (scsi_get_prot_op(sc)) { |
1706 | case SCSI_PROT_READ_INSERT: | |
1707 | case SCSI_PROT_WRITE_STRIP: | |
6c8eea54 | 1708 | *rxop = BG_OP_IN_NODIF_OUT_CSUM; |
4ac9b226 | 1709 | *txop = BG_OP_IN_CSUM_OUT_NODIF; |
e2a0a9d6 JS |
1710 | break; |
1711 | ||
1712 | case SCSI_PROT_READ_STRIP: | |
1713 | case SCSI_PROT_WRITE_INSERT: | |
6c8eea54 | 1714 | *rxop = BG_OP_IN_CRC_OUT_NODIF; |
4ac9b226 | 1715 | *txop = BG_OP_IN_NODIF_OUT_CRC; |
e2a0a9d6 JS |
1716 | break; |
1717 | ||
c6af4042 MP |
1718 | case SCSI_PROT_READ_PASS: |
1719 | case SCSI_PROT_WRITE_PASS: | |
6c8eea54 | 1720 | *rxop = BG_OP_IN_CRC_OUT_CSUM; |
4ac9b226 | 1721 | *txop = BG_OP_IN_CSUM_OUT_CRC; |
e2a0a9d6 JS |
1722 | break; |
1723 | ||
e2a0a9d6 JS |
1724 | case SCSI_PROT_NORMAL: |
1725 | default: | |
6a9c52cf | 1726 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
7c56b9fd JS |
1727 | "9063 BLKGRD: Bad op/guard:%d/IP combination\n", |
1728 | scsi_get_prot_op(sc)); | |
6c8eea54 | 1729 | ret = 1; |
e2a0a9d6 JS |
1730 | break; |
1731 | ||
1732 | } | |
7c56b9fd | 1733 | } else { |
e2a0a9d6 JS |
1734 | switch (scsi_get_prot_op(sc)) { |
1735 | case SCSI_PROT_READ_STRIP: | |
1736 | case SCSI_PROT_WRITE_INSERT: | |
6c8eea54 | 1737 | *rxop = BG_OP_IN_CRC_OUT_NODIF; |
4ac9b226 | 1738 | *txop = BG_OP_IN_NODIF_OUT_CRC; |
e2a0a9d6 JS |
1739 | break; |
1740 | ||
1741 | case SCSI_PROT_READ_PASS: | |
1742 | case SCSI_PROT_WRITE_PASS: | |
6c8eea54 | 1743 | *rxop = BG_OP_IN_CRC_OUT_CRC; |
4ac9b226 | 1744 | *txop = BG_OP_IN_CRC_OUT_CRC; |
e2a0a9d6 JS |
1745 | break; |
1746 | ||
e2a0a9d6 JS |
1747 | case SCSI_PROT_READ_INSERT: |
1748 | case SCSI_PROT_WRITE_STRIP: | |
7c56b9fd | 1749 | *rxop = BG_OP_IN_NODIF_OUT_CRC; |
4ac9b226 | 1750 | *txop = BG_OP_IN_CRC_OUT_NODIF; |
7c56b9fd JS |
1751 | break; |
1752 | ||
e2a0a9d6 JS |
1753 | case SCSI_PROT_NORMAL: |
1754 | default: | |
6a9c52cf | 1755 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
7c56b9fd JS |
1756 | "9075 BLKGRD: Bad op/guard:%d/CRC combination\n", |
1757 | scsi_get_prot_op(sc)); | |
6c8eea54 | 1758 | ret = 1; |
e2a0a9d6 JS |
1759 | break; |
1760 | } | |
e2a0a9d6 JS |
1761 | } |
1762 | ||
6c8eea54 | 1763 | return ret; |
e2a0a9d6 JS |
1764 | } |
1765 | ||
acd6859b JS |
1766 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
1767 | /** | |
1768 | * lpfc_bg_err_opcodes - reDetermine the BlockGuard opcodes to be used with | |
1769 | * the specified SCSI command in order to force a guard tag error. | |
1770 | * @phba: The Hba for which this call is being executed. | |
1771 | * @sc: The SCSI command to examine | |
1772 | * @txopt: (out) BlockGuard operation for transmitted data | |
1773 | * @rxopt: (out) BlockGuard operation for received data | |
1774 | * | |
1775 | * Returns: zero on success; non-zero if tx and/or rx op cannot be determined | |
1776 | * | |
1777 | **/ | |
1778 | static int | |
1779 | lpfc_bg_err_opcodes(struct lpfc_hba *phba, struct scsi_cmnd *sc, | |
1780 | uint8_t *txop, uint8_t *rxop) | |
1781 | { | |
acd6859b JS |
1782 | uint8_t ret = 0; |
1783 | ||
9c6aa9d7 | 1784 | if (lpfc_cmd_guard_csum(sc)) { |
acd6859b JS |
1785 | switch (scsi_get_prot_op(sc)) { |
1786 | case SCSI_PROT_READ_INSERT: | |
1787 | case SCSI_PROT_WRITE_STRIP: | |
acd6859b | 1788 | *rxop = BG_OP_IN_NODIF_OUT_CRC; |
4ac9b226 | 1789 | *txop = BG_OP_IN_CRC_OUT_NODIF; |
acd6859b JS |
1790 | break; |
1791 | ||
1792 | case SCSI_PROT_READ_STRIP: | |
1793 | case SCSI_PROT_WRITE_INSERT: | |
acd6859b | 1794 | *rxop = BG_OP_IN_CSUM_OUT_NODIF; |
4ac9b226 | 1795 | *txop = BG_OP_IN_NODIF_OUT_CSUM; |
acd6859b JS |
1796 | break; |
1797 | ||
1798 | case SCSI_PROT_READ_PASS: | |
1799 | case SCSI_PROT_WRITE_PASS: | |
4ac9b226 | 1800 | *rxop = BG_OP_IN_CSUM_OUT_CRC; |
9a6b09c0 | 1801 | *txop = BG_OP_IN_CRC_OUT_CSUM; |
acd6859b JS |
1802 | break; |
1803 | ||
1804 | case SCSI_PROT_NORMAL: | |
1805 | default: | |
1806 | break; | |
1807 | ||
1808 | } | |
1809 | } else { | |
1810 | switch (scsi_get_prot_op(sc)) { | |
1811 | case SCSI_PROT_READ_STRIP: | |
1812 | case SCSI_PROT_WRITE_INSERT: | |
acd6859b | 1813 | *rxop = BG_OP_IN_CSUM_OUT_NODIF; |
4ac9b226 | 1814 | *txop = BG_OP_IN_NODIF_OUT_CSUM; |
acd6859b JS |
1815 | break; |
1816 | ||
1817 | case SCSI_PROT_READ_PASS: | |
1818 | case SCSI_PROT_WRITE_PASS: | |
4ac9b226 | 1819 | *rxop = BG_OP_IN_CSUM_OUT_CSUM; |
9a6b09c0 | 1820 | *txop = BG_OP_IN_CSUM_OUT_CSUM; |
acd6859b JS |
1821 | break; |
1822 | ||
1823 | case SCSI_PROT_READ_INSERT: | |
1824 | case SCSI_PROT_WRITE_STRIP: | |
acd6859b | 1825 | *rxop = BG_OP_IN_NODIF_OUT_CSUM; |
4ac9b226 | 1826 | *txop = BG_OP_IN_CSUM_OUT_NODIF; |
acd6859b JS |
1827 | break; |
1828 | ||
1829 | case SCSI_PROT_NORMAL: | |
1830 | default: | |
1831 | break; | |
1832 | } | |
1833 | } | |
1834 | ||
1835 | return ret; | |
1836 | } | |
1837 | #endif | |
1838 | ||
1839 | /** | |
1840 | * lpfc_bg_setup_bpl - Setup BlockGuard BPL with no protection data | |
1841 | * @phba: The Hba for which this call is being executed. | |
1842 | * @sc: pointer to scsi command we're working on | |
1843 | * @bpl: pointer to buffer list for protection groups | |
1844 | * @datacnt: number of segments of data that have been dma mapped | |
1845 | * | |
1846 | * This function sets up BPL buffer list for protection groups of | |
e2a0a9d6 JS |
1847 | * type LPFC_PG_TYPE_NO_DIF |
1848 | * | |
1849 | * This is usually used when the HBA is instructed to generate | |
1850 | * DIFs and insert them into data stream (or strip DIF from | |
1851 | * incoming data stream) | |
1852 | * | |
1853 | * The buffer list consists of just one protection group described | |
1854 | * below: | |
1855 | * +-------------------------+ | |
6c8eea54 JS |
1856 | * start of prot group --> | PDE_5 | |
1857 | * +-------------------------+ | |
1858 | * | PDE_6 | | |
e2a0a9d6 JS |
1859 | * +-------------------------+ |
1860 | * | Data BDE | | |
1861 | * +-------------------------+ | |
1862 | * |more Data BDE's ... (opt)| | |
1863 | * +-------------------------+ | |
1864 | * | |
e2a0a9d6 JS |
1865 | * |
1866 | * Note: Data s/g buffers have been dma mapped | |
acd6859b JS |
1867 | * |
1868 | * Returns the number of BDEs added to the BPL. | |
1869 | **/ | |
e2a0a9d6 JS |
1870 | static int |
1871 | lpfc_bg_setup_bpl(struct lpfc_hba *phba, struct scsi_cmnd *sc, | |
1872 | struct ulp_bde64 *bpl, int datasegcnt) | |
1873 | { | |
1874 | struct scatterlist *sgde = NULL; /* s/g data entry */ | |
6c8eea54 JS |
1875 | struct lpfc_pde5 *pde5 = NULL; |
1876 | struct lpfc_pde6 *pde6 = NULL; | |
e2a0a9d6 | 1877 | dma_addr_t physaddr; |
6c8eea54 | 1878 | int i = 0, num_bde = 0, status; |
e2a0a9d6 | 1879 | int datadir = sc->sc_data_direction; |
0829a19a | 1880 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
acd6859b | 1881 | uint32_t rc; |
0829a19a | 1882 | #endif |
acd6859b | 1883 | uint32_t checking = 1; |
e2a0a9d6 | 1884 | uint32_t reftag; |
7c56b9fd | 1885 | unsigned blksize; |
6c8eea54 | 1886 | uint8_t txop, rxop; |
e2a0a9d6 | 1887 | |
6c8eea54 JS |
1888 | status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop); |
1889 | if (status) | |
e2a0a9d6 JS |
1890 | goto out; |
1891 | ||
6c8eea54 | 1892 | /* extract some info from the scsi command for pde*/ |
e2a0a9d6 | 1893 | blksize = lpfc_cmd_blksize(sc); |
acd6859b | 1894 | reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */ |
e2a0a9d6 | 1895 | |
f9bb2da1 | 1896 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
4ac9b226 | 1897 | rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1); |
acd6859b | 1898 | if (rc) { |
9a6b09c0 | 1899 | if (rc & BG_ERR_SWAP) |
acd6859b | 1900 | lpfc_bg_err_opcodes(phba, sc, &txop, &rxop); |
9a6b09c0 | 1901 | if (rc & BG_ERR_CHECK) |
acd6859b JS |
1902 | checking = 0; |
1903 | } | |
f9bb2da1 JS |
1904 | #endif |
1905 | ||
6c8eea54 JS |
1906 | /* setup PDE5 with what we have */ |
1907 | pde5 = (struct lpfc_pde5 *) bpl; | |
1908 | memset(pde5, 0, sizeof(struct lpfc_pde5)); | |
1909 | bf_set(pde5_type, pde5, LPFC_PDE5_DESCRIPTOR); | |
6c8eea54 | 1910 | |
bc73905a | 1911 | /* Endianness conversion if necessary for PDE5 */ |
589a52d6 | 1912 | pde5->word0 = cpu_to_le32(pde5->word0); |
7c56b9fd | 1913 | pde5->reftag = cpu_to_le32(reftag); |
589a52d6 | 1914 | |
6c8eea54 JS |
1915 | /* advance bpl and increment bde count */ |
1916 | num_bde++; | |
1917 | bpl++; | |
1918 | pde6 = (struct lpfc_pde6 *) bpl; | |
1919 | ||
1920 | /* setup PDE6 with the rest of the info */ | |
1921 | memset(pde6, 0, sizeof(struct lpfc_pde6)); | |
1922 | bf_set(pde6_type, pde6, LPFC_PDE6_DESCRIPTOR); | |
1923 | bf_set(pde6_optx, pde6, txop); | |
1924 | bf_set(pde6_oprx, pde6, rxop); | |
a6887e28 JS |
1925 | |
1926 | /* | |
1927 | * We only need to check the data on READs, for WRITEs | |
1928 | * protection data is automatically generated, not checked. | |
1929 | */ | |
6c8eea54 | 1930 | if (datadir == DMA_FROM_DEVICE) { |
9c6aa9d7 | 1931 | if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_GUARD)) |
a6887e28 JS |
1932 | bf_set(pde6_ce, pde6, checking); |
1933 | else | |
1934 | bf_set(pde6_ce, pde6, 0); | |
1935 | ||
9c6aa9d7 | 1936 | if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_REF)) |
a6887e28 JS |
1937 | bf_set(pde6_re, pde6, checking); |
1938 | else | |
1939 | bf_set(pde6_re, pde6, 0); | |
6c8eea54 JS |
1940 | } |
1941 | bf_set(pde6_ai, pde6, 1); | |
7c56b9fd JS |
1942 | bf_set(pde6_ae, pde6, 0); |
1943 | bf_set(pde6_apptagval, pde6, 0); | |
e2a0a9d6 | 1944 | |
bc73905a | 1945 | /* Endianness conversion if necessary for PDE6 */ |
589a52d6 JS |
1946 | pde6->word0 = cpu_to_le32(pde6->word0); |
1947 | pde6->word1 = cpu_to_le32(pde6->word1); | |
1948 | pde6->word2 = cpu_to_le32(pde6->word2); | |
1949 | ||
6c8eea54 | 1950 | /* advance bpl and increment bde count */ |
e2a0a9d6 JS |
1951 | num_bde++; |
1952 | bpl++; | |
1953 | ||
1954 | /* assumption: caller has already run dma_map_sg on command data */ | |
1955 | scsi_for_each_sg(sc, sgde, datasegcnt, i) { | |
1956 | physaddr = sg_dma_address(sgde); | |
1957 | bpl->addrLow = le32_to_cpu(putPaddrLow(physaddr)); | |
1958 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(physaddr)); | |
1959 | bpl->tus.f.bdeSize = sg_dma_len(sgde); | |
1960 | if (datadir == DMA_TO_DEVICE) | |
1961 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
1962 | else | |
1963 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; | |
1964 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
1965 | bpl++; | |
1966 | num_bde++; | |
1967 | } | |
1968 | ||
1969 | out: | |
1970 | return num_bde; | |
1971 | } | |
1972 | ||
acd6859b JS |
1973 | /** |
1974 | * lpfc_bg_setup_bpl_prot - Setup BlockGuard BPL with protection data | |
1975 | * @phba: The Hba for which this call is being executed. | |
1976 | * @sc: pointer to scsi command we're working on | |
1977 | * @bpl: pointer to buffer list for protection groups | |
1978 | * @datacnt: number of segments of data that have been dma mapped | |
1979 | * @protcnt: number of segment of protection data that have been dma mapped | |
1980 | * | |
1981 | * This function sets up BPL buffer list for protection groups of | |
1982 | * type LPFC_PG_TYPE_DIF | |
e2a0a9d6 JS |
1983 | * |
1984 | * This is usually used when DIFs are in their own buffers, | |
1985 | * separate from the data. The HBA can then by instructed | |
1986 | * to place the DIFs in the outgoing stream. For read operations, | |
1987 | * The HBA could extract the DIFs and place it in DIF buffers. | |
1988 | * | |
1989 | * The buffer list for this type consists of one or more of the | |
1990 | * protection groups described below: | |
1991 | * +-------------------------+ | |
6c8eea54 | 1992 | * start of first prot group --> | PDE_5 | |
e2a0a9d6 | 1993 | * +-------------------------+ |
6c8eea54 JS |
1994 | * | PDE_6 | |
1995 | * +-------------------------+ | |
1996 | * | PDE_7 (Prot BDE) | | |
e2a0a9d6 JS |
1997 | * +-------------------------+ |
1998 | * | Data BDE | | |
1999 | * +-------------------------+ | |
2000 | * |more Data BDE's ... (opt)| | |
2001 | * +-------------------------+ | |
6c8eea54 | 2002 | * start of new prot group --> | PDE_5 | |
e2a0a9d6 JS |
2003 | * +-------------------------+ |
2004 | * | ... | | |
2005 | * +-------------------------+ | |
2006 | * | |
e2a0a9d6 JS |
2007 | * Note: It is assumed that both data and protection s/g buffers have been |
2008 | * mapped for DMA | |
acd6859b JS |
2009 | * |
2010 | * Returns the number of BDEs added to the BPL. | |
2011 | **/ | |
e2a0a9d6 JS |
2012 | static int |
2013 | lpfc_bg_setup_bpl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc, | |
2014 | struct ulp_bde64 *bpl, int datacnt, int protcnt) | |
2015 | { | |
2016 | struct scatterlist *sgde = NULL; /* s/g data entry */ | |
2017 | struct scatterlist *sgpe = NULL; /* s/g prot entry */ | |
6c8eea54 JS |
2018 | struct lpfc_pde5 *pde5 = NULL; |
2019 | struct lpfc_pde6 *pde6 = NULL; | |
7f86059a | 2020 | struct lpfc_pde7 *pde7 = NULL; |
e2a0a9d6 JS |
2021 | dma_addr_t dataphysaddr, protphysaddr; |
2022 | unsigned short curr_data = 0, curr_prot = 0; | |
7f86059a JS |
2023 | unsigned int split_offset; |
2024 | unsigned int protgroup_len, protgroup_offset = 0, protgroup_remainder; | |
e2a0a9d6 JS |
2025 | unsigned int protgrp_blks, protgrp_bytes; |
2026 | unsigned int remainder, subtotal; | |
6c8eea54 | 2027 | int status; |
e2a0a9d6 JS |
2028 | int datadir = sc->sc_data_direction; |
2029 | unsigned char pgdone = 0, alldone = 0; | |
2030 | unsigned blksize; | |
0829a19a | 2031 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
acd6859b | 2032 | uint32_t rc; |
0829a19a | 2033 | #endif |
acd6859b | 2034 | uint32_t checking = 1; |
e2a0a9d6 | 2035 | uint32_t reftag; |
6c8eea54 | 2036 | uint8_t txop, rxop; |
e2a0a9d6 JS |
2037 | int num_bde = 0; |
2038 | ||
2039 | sgpe = scsi_prot_sglist(sc); | |
2040 | sgde = scsi_sglist(sc); | |
2041 | ||
2042 | if (!sgpe || !sgde) { | |
2043 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
acd6859b JS |
2044 | "9020 Invalid s/g entry: data=0x%p prot=0x%p\n", |
2045 | sgpe, sgde); | |
2046 | return 0; | |
2047 | } | |
2048 | ||
2049 | status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop); | |
2050 | if (status) | |
2051 | goto out; | |
2052 | ||
2053 | /* extract some info from the scsi command */ | |
2054 | blksize = lpfc_cmd_blksize(sc); | |
2055 | reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */ | |
2056 | ||
2057 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS | |
4ac9b226 | 2058 | rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1); |
acd6859b | 2059 | if (rc) { |
9a6b09c0 | 2060 | if (rc & BG_ERR_SWAP) |
acd6859b | 2061 | lpfc_bg_err_opcodes(phba, sc, &txop, &rxop); |
9a6b09c0 | 2062 | if (rc & BG_ERR_CHECK) |
acd6859b JS |
2063 | checking = 0; |
2064 | } | |
2065 | #endif | |
2066 | ||
2067 | split_offset = 0; | |
2068 | do { | |
96f7077f JS |
2069 | /* Check to see if we ran out of space */ |
2070 | if (num_bde >= (phba->cfg_total_seg_cnt - 2)) | |
2071 | return num_bde + 3; | |
2072 | ||
acd6859b JS |
2073 | /* setup PDE5 with what we have */ |
2074 | pde5 = (struct lpfc_pde5 *) bpl; | |
2075 | memset(pde5, 0, sizeof(struct lpfc_pde5)); | |
2076 | bf_set(pde5_type, pde5, LPFC_PDE5_DESCRIPTOR); | |
2077 | ||
2078 | /* Endianness conversion if necessary for PDE5 */ | |
2079 | pde5->word0 = cpu_to_le32(pde5->word0); | |
2080 | pde5->reftag = cpu_to_le32(reftag); | |
2081 | ||
2082 | /* advance bpl and increment bde count */ | |
2083 | num_bde++; | |
2084 | bpl++; | |
2085 | pde6 = (struct lpfc_pde6 *) bpl; | |
2086 | ||
2087 | /* setup PDE6 with the rest of the info */ | |
2088 | memset(pde6, 0, sizeof(struct lpfc_pde6)); | |
2089 | bf_set(pde6_type, pde6, LPFC_PDE6_DESCRIPTOR); | |
2090 | bf_set(pde6_optx, pde6, txop); | |
2091 | bf_set(pde6_oprx, pde6, rxop); | |
a6887e28 | 2092 | |
9c6aa9d7 | 2093 | if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_GUARD)) |
a6887e28 JS |
2094 | bf_set(pde6_ce, pde6, checking); |
2095 | else | |
2096 | bf_set(pde6_ce, pde6, 0); | |
2097 | ||
9c6aa9d7 | 2098 | if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_REF)) |
a6887e28 JS |
2099 | bf_set(pde6_re, pde6, checking); |
2100 | else | |
2101 | bf_set(pde6_re, pde6, 0); | |
2102 | ||
acd6859b JS |
2103 | bf_set(pde6_ai, pde6, 1); |
2104 | bf_set(pde6_ae, pde6, 0); | |
2105 | bf_set(pde6_apptagval, pde6, 0); | |
2106 | ||
2107 | /* Endianness conversion if necessary for PDE6 */ | |
2108 | pde6->word0 = cpu_to_le32(pde6->word0); | |
2109 | pde6->word1 = cpu_to_le32(pde6->word1); | |
2110 | pde6->word2 = cpu_to_le32(pde6->word2); | |
2111 | ||
2112 | /* advance bpl and increment bde count */ | |
2113 | num_bde++; | |
2114 | bpl++; | |
2115 | ||
2116 | /* setup the first BDE that points to protection buffer */ | |
2117 | protphysaddr = sg_dma_address(sgpe) + protgroup_offset; | |
2118 | protgroup_len = sg_dma_len(sgpe) - protgroup_offset; | |
2119 | ||
2120 | /* must be integer multiple of the DIF block length */ | |
2121 | BUG_ON(protgroup_len % 8); | |
2122 | ||
2123 | pde7 = (struct lpfc_pde7 *) bpl; | |
2124 | memset(pde7, 0, sizeof(struct lpfc_pde7)); | |
2125 | bf_set(pde7_type, pde7, LPFC_PDE7_DESCRIPTOR); | |
2126 | ||
2127 | pde7->addrHigh = le32_to_cpu(putPaddrHigh(protphysaddr)); | |
2128 | pde7->addrLow = le32_to_cpu(putPaddrLow(protphysaddr)); | |
2129 | ||
2130 | protgrp_blks = protgroup_len / 8; | |
2131 | protgrp_bytes = protgrp_blks * blksize; | |
2132 | ||
2133 | /* check if this pde is crossing the 4K boundary; if so split */ | |
2134 | if ((pde7->addrLow & 0xfff) + protgroup_len > 0x1000) { | |
2135 | protgroup_remainder = 0x1000 - (pde7->addrLow & 0xfff); | |
2136 | protgroup_offset += protgroup_remainder; | |
2137 | protgrp_blks = protgroup_remainder / 8; | |
2138 | protgrp_bytes = protgrp_blks * blksize; | |
2139 | } else { | |
2140 | protgroup_offset = 0; | |
2141 | curr_prot++; | |
2142 | } | |
2143 | ||
2144 | num_bde++; | |
2145 | ||
2146 | /* setup BDE's for data blocks associated with DIF data */ | |
2147 | pgdone = 0; | |
2148 | subtotal = 0; /* total bytes processed for current prot grp */ | |
2149 | while (!pgdone) { | |
96f7077f JS |
2150 | /* Check to see if we ran out of space */ |
2151 | if (num_bde >= phba->cfg_total_seg_cnt) | |
2152 | return num_bde + 1; | |
2153 | ||
acd6859b JS |
2154 | if (!sgde) { |
2155 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, | |
2156 | "9065 BLKGRD:%s Invalid data segment\n", | |
2157 | __func__); | |
2158 | return 0; | |
2159 | } | |
2160 | bpl++; | |
2161 | dataphysaddr = sg_dma_address(sgde) + split_offset; | |
2162 | bpl->addrLow = le32_to_cpu(putPaddrLow(dataphysaddr)); | |
2163 | bpl->addrHigh = le32_to_cpu(putPaddrHigh(dataphysaddr)); | |
2164 | ||
2165 | remainder = sg_dma_len(sgde) - split_offset; | |
2166 | ||
2167 | if ((subtotal + remainder) <= protgrp_bytes) { | |
2168 | /* we can use this whole buffer */ | |
2169 | bpl->tus.f.bdeSize = remainder; | |
2170 | split_offset = 0; | |
2171 | ||
2172 | if ((subtotal + remainder) == protgrp_bytes) | |
2173 | pgdone = 1; | |
2174 | } else { | |
2175 | /* must split this buffer with next prot grp */ | |
2176 | bpl->tus.f.bdeSize = protgrp_bytes - subtotal; | |
2177 | split_offset += bpl->tus.f.bdeSize; | |
2178 | } | |
2179 | ||
2180 | subtotal += bpl->tus.f.bdeSize; | |
2181 | ||
2182 | if (datadir == DMA_TO_DEVICE) | |
2183 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
2184 | else | |
2185 | bpl->tus.f.bdeFlags = BUFF_TYPE_BDE_64I; | |
2186 | bpl->tus.w = le32_to_cpu(bpl->tus.w); | |
2187 | ||
2188 | num_bde++; | |
2189 | curr_data++; | |
2190 | ||
2191 | if (split_offset) | |
2192 | break; | |
2193 | ||
2194 | /* Move to the next s/g segment if possible */ | |
2195 | sgde = sg_next(sgde); | |
2196 | ||
2197 | } | |
2198 | ||
2199 | if (protgroup_offset) { | |
2200 | /* update the reference tag */ | |
2201 | reftag += protgrp_blks; | |
2202 | bpl++; | |
2203 | continue; | |
2204 | } | |
2205 | ||
2206 | /* are we done ? */ | |
2207 | if (curr_prot == protcnt) { | |
2208 | alldone = 1; | |
2209 | } else if (curr_prot < protcnt) { | |
2210 | /* advance to next prot buffer */ | |
2211 | sgpe = sg_next(sgpe); | |
2212 | bpl++; | |
2213 | ||
2214 | /* update the reference tag */ | |
2215 | reftag += protgrp_blks; | |
2216 | } else { | |
2217 | /* if we're here, we have a bug */ | |
2218 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, | |
2219 | "9054 BLKGRD: bug in %s\n", __func__); | |
2220 | } | |
2221 | ||
2222 | } while (!alldone); | |
2223 | out: | |
2224 | ||
2225 | return num_bde; | |
2226 | } | |
2227 | ||
2228 | /** | |
2229 | * lpfc_bg_setup_sgl - Setup BlockGuard SGL with no protection data | |
2230 | * @phba: The Hba for which this call is being executed. | |
2231 | * @sc: pointer to scsi command we're working on | |
2232 | * @sgl: pointer to buffer list for protection groups | |
2233 | * @datacnt: number of segments of data that have been dma mapped | |
2234 | * | |
2235 | * This function sets up SGL buffer list for protection groups of | |
2236 | * type LPFC_PG_TYPE_NO_DIF | |
2237 | * | |
2238 | * This is usually used when the HBA is instructed to generate | |
2239 | * DIFs and insert them into data stream (or strip DIF from | |
2240 | * incoming data stream) | |
2241 | * | |
2242 | * The buffer list consists of just one protection group described | |
2243 | * below: | |
2244 | * +-------------------------+ | |
2245 | * start of prot group --> | DI_SEED | | |
2246 | * +-------------------------+ | |
2247 | * | Data SGE | | |
2248 | * +-------------------------+ | |
2249 | * |more Data SGE's ... (opt)| | |
2250 | * +-------------------------+ | |
2251 | * | |
2252 | * | |
2253 | * Note: Data s/g buffers have been dma mapped | |
2254 | * | |
2255 | * Returns the number of SGEs added to the SGL. | |
2256 | **/ | |
2257 | static int | |
2258 | lpfc_bg_setup_sgl(struct lpfc_hba *phba, struct scsi_cmnd *sc, | |
2259 | struct sli4_sge *sgl, int datasegcnt) | |
2260 | { | |
2261 | struct scatterlist *sgde = NULL; /* s/g data entry */ | |
2262 | struct sli4_sge_diseed *diseed = NULL; | |
2263 | dma_addr_t physaddr; | |
2264 | int i = 0, num_sge = 0, status; | |
acd6859b JS |
2265 | uint32_t reftag; |
2266 | unsigned blksize; | |
2267 | uint8_t txop, rxop; | |
0829a19a | 2268 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
acd6859b | 2269 | uint32_t rc; |
0829a19a | 2270 | #endif |
acd6859b JS |
2271 | uint32_t checking = 1; |
2272 | uint32_t dma_len; | |
2273 | uint32_t dma_offset = 0; | |
2274 | ||
2275 | status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop); | |
2276 | if (status) | |
2277 | goto out; | |
2278 | ||
2279 | /* extract some info from the scsi command for pde*/ | |
2280 | blksize = lpfc_cmd_blksize(sc); | |
2281 | reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */ | |
2282 | ||
2283 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS | |
4ac9b226 | 2284 | rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1); |
acd6859b | 2285 | if (rc) { |
9a6b09c0 | 2286 | if (rc & BG_ERR_SWAP) |
acd6859b | 2287 | lpfc_bg_err_opcodes(phba, sc, &txop, &rxop); |
9a6b09c0 | 2288 | if (rc & BG_ERR_CHECK) |
acd6859b JS |
2289 | checking = 0; |
2290 | } | |
2291 | #endif | |
2292 | ||
2293 | /* setup DISEED with what we have */ | |
2294 | diseed = (struct sli4_sge_diseed *) sgl; | |
2295 | memset(diseed, 0, sizeof(struct sli4_sge_diseed)); | |
2296 | bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DISEED); | |
2297 | ||
2298 | /* Endianness conversion if necessary */ | |
2299 | diseed->ref_tag = cpu_to_le32(reftag); | |
2300 | diseed->ref_tag_tran = diseed->ref_tag; | |
2301 | ||
a6887e28 JS |
2302 | /* |
2303 | * We only need to check the data on READs, for WRITEs | |
2304 | * protection data is automatically generated, not checked. | |
2305 | */ | |
2306 | if (sc->sc_data_direction == DMA_FROM_DEVICE) { | |
9c6aa9d7 | 2307 | if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_GUARD)) |
a6887e28 JS |
2308 | bf_set(lpfc_sli4_sge_dif_ce, diseed, checking); |
2309 | else | |
2310 | bf_set(lpfc_sli4_sge_dif_ce, diseed, 0); | |
2311 | ||
9c6aa9d7 | 2312 | if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_REF)) |
a6887e28 JS |
2313 | bf_set(lpfc_sli4_sge_dif_re, diseed, checking); |
2314 | else | |
2315 | bf_set(lpfc_sli4_sge_dif_re, diseed, 0); | |
2316 | } | |
2317 | ||
acd6859b JS |
2318 | /* setup DISEED with the rest of the info */ |
2319 | bf_set(lpfc_sli4_sge_dif_optx, diseed, txop); | |
2320 | bf_set(lpfc_sli4_sge_dif_oprx, diseed, rxop); | |
a6887e28 | 2321 | |
acd6859b JS |
2322 | bf_set(lpfc_sli4_sge_dif_ai, diseed, 1); |
2323 | bf_set(lpfc_sli4_sge_dif_me, diseed, 0); | |
2324 | ||
2325 | /* Endianness conversion if necessary for DISEED */ | |
2326 | diseed->word2 = cpu_to_le32(diseed->word2); | |
2327 | diseed->word3 = cpu_to_le32(diseed->word3); | |
2328 | ||
2329 | /* advance bpl and increment sge count */ | |
2330 | num_sge++; | |
2331 | sgl++; | |
2332 | ||
2333 | /* assumption: caller has already run dma_map_sg on command data */ | |
2334 | scsi_for_each_sg(sc, sgde, datasegcnt, i) { | |
2335 | physaddr = sg_dma_address(sgde); | |
2336 | dma_len = sg_dma_len(sgde); | |
2337 | sgl->addr_lo = cpu_to_le32(putPaddrLow(physaddr)); | |
2338 | sgl->addr_hi = cpu_to_le32(putPaddrHigh(physaddr)); | |
2339 | if ((i + 1) == datasegcnt) | |
2340 | bf_set(lpfc_sli4_sge_last, sgl, 1); | |
2341 | else | |
2342 | bf_set(lpfc_sli4_sge_last, sgl, 0); | |
2343 | bf_set(lpfc_sli4_sge_offset, sgl, dma_offset); | |
2344 | bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA); | |
2345 | ||
2346 | sgl->sge_len = cpu_to_le32(dma_len); | |
2347 | dma_offset += dma_len; | |
2348 | ||
2349 | sgl++; | |
2350 | num_sge++; | |
2351 | } | |
2352 | ||
2353 | out: | |
2354 | return num_sge; | |
2355 | } | |
2356 | ||
2357 | /** | |
2358 | * lpfc_bg_setup_sgl_prot - Setup BlockGuard SGL with protection data | |
2359 | * @phba: The Hba for which this call is being executed. | |
2360 | * @sc: pointer to scsi command we're working on | |
2361 | * @sgl: pointer to buffer list for protection groups | |
2362 | * @datacnt: number of segments of data that have been dma mapped | |
2363 | * @protcnt: number of segment of protection data that have been dma mapped | |
2364 | * | |
2365 | * This function sets up SGL buffer list for protection groups of | |
2366 | * type LPFC_PG_TYPE_DIF | |
2367 | * | |
2368 | * This is usually used when DIFs are in their own buffers, | |
2369 | * separate from the data. The HBA can then by instructed | |
2370 | * to place the DIFs in the outgoing stream. For read operations, | |
2371 | * The HBA could extract the DIFs and place it in DIF buffers. | |
2372 | * | |
2373 | * The buffer list for this type consists of one or more of the | |
2374 | * protection groups described below: | |
2375 | * +-------------------------+ | |
2376 | * start of first prot group --> | DISEED | | |
2377 | * +-------------------------+ | |
2378 | * | DIF (Prot SGE) | | |
2379 | * +-------------------------+ | |
2380 | * | Data SGE | | |
2381 | * +-------------------------+ | |
2382 | * |more Data SGE's ... (opt)| | |
2383 | * +-------------------------+ | |
2384 | * start of new prot group --> | DISEED | | |
2385 | * +-------------------------+ | |
2386 | * | ... | | |
2387 | * +-------------------------+ | |
2388 | * | |
2389 | * Note: It is assumed that both data and protection s/g buffers have been | |
2390 | * mapped for DMA | |
2391 | * | |
2392 | * Returns the number of SGEs added to the SGL. | |
2393 | **/ | |
2394 | static int | |
2395 | lpfc_bg_setup_sgl_prot(struct lpfc_hba *phba, struct scsi_cmnd *sc, | |
2396 | struct sli4_sge *sgl, int datacnt, int protcnt) | |
2397 | { | |
2398 | struct scatterlist *sgde = NULL; /* s/g data entry */ | |
2399 | struct scatterlist *sgpe = NULL; /* s/g prot entry */ | |
2400 | struct sli4_sge_diseed *diseed = NULL; | |
2401 | dma_addr_t dataphysaddr, protphysaddr; | |
2402 | unsigned short curr_data = 0, curr_prot = 0; | |
2403 | unsigned int split_offset; | |
2404 | unsigned int protgroup_len, protgroup_offset = 0, protgroup_remainder; | |
2405 | unsigned int protgrp_blks, protgrp_bytes; | |
2406 | unsigned int remainder, subtotal; | |
2407 | int status; | |
2408 | unsigned char pgdone = 0, alldone = 0; | |
2409 | unsigned blksize; | |
2410 | uint32_t reftag; | |
2411 | uint8_t txop, rxop; | |
2412 | uint32_t dma_len; | |
0829a19a | 2413 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
acd6859b | 2414 | uint32_t rc; |
0829a19a | 2415 | #endif |
acd6859b JS |
2416 | uint32_t checking = 1; |
2417 | uint32_t dma_offset = 0; | |
2418 | int num_sge = 0; | |
2419 | ||
2420 | sgpe = scsi_prot_sglist(sc); | |
2421 | sgde = scsi_sglist(sc); | |
2422 | ||
2423 | if (!sgpe || !sgde) { | |
2424 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
2425 | "9082 Invalid s/g entry: data=0x%p prot=0x%p\n", | |
e2a0a9d6 JS |
2426 | sgpe, sgde); |
2427 | return 0; | |
2428 | } | |
2429 | ||
6c8eea54 JS |
2430 | status = lpfc_sc_to_bg_opcodes(phba, sc, &txop, &rxop); |
2431 | if (status) | |
e2a0a9d6 JS |
2432 | goto out; |
2433 | ||
6c8eea54 | 2434 | /* extract some info from the scsi command */ |
e2a0a9d6 | 2435 | blksize = lpfc_cmd_blksize(sc); |
acd6859b | 2436 | reftag = (uint32_t)scsi_get_lba(sc); /* Truncate LBA */ |
e2a0a9d6 | 2437 | |
f9bb2da1 | 2438 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
4ac9b226 | 2439 | rc = lpfc_bg_err_inject(phba, sc, &reftag, NULL, 1); |
acd6859b | 2440 | if (rc) { |
9a6b09c0 | 2441 | if (rc & BG_ERR_SWAP) |
acd6859b | 2442 | lpfc_bg_err_opcodes(phba, sc, &txop, &rxop); |
9a6b09c0 | 2443 | if (rc & BG_ERR_CHECK) |
acd6859b JS |
2444 | checking = 0; |
2445 | } | |
f9bb2da1 JS |
2446 | #endif |
2447 | ||
e2a0a9d6 JS |
2448 | split_offset = 0; |
2449 | do { | |
96f7077f JS |
2450 | /* Check to see if we ran out of space */ |
2451 | if (num_sge >= (phba->cfg_total_seg_cnt - 2)) | |
2452 | return num_sge + 3; | |
2453 | ||
acd6859b JS |
2454 | /* setup DISEED with what we have */ |
2455 | diseed = (struct sli4_sge_diseed *) sgl; | |
2456 | memset(diseed, 0, sizeof(struct sli4_sge_diseed)); | |
2457 | bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DISEED); | |
2458 | ||
2459 | /* Endianness conversion if necessary */ | |
2460 | diseed->ref_tag = cpu_to_le32(reftag); | |
2461 | diseed->ref_tag_tran = diseed->ref_tag; | |
2462 | ||
9c6aa9d7 | 2463 | if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_GUARD)) { |
a6887e28 JS |
2464 | bf_set(lpfc_sli4_sge_dif_ce, diseed, checking); |
2465 | ||
2466 | } else { | |
2467 | bf_set(lpfc_sli4_sge_dif_ce, diseed, 0); | |
2468 | /* | |
2469 | * When in this mode, the hardware will replace | |
2470 | * the guard tag from the host with a | |
2471 | * newly generated good CRC for the wire. | |
2472 | * Switch to raw mode here to avoid this | |
2473 | * behavior. What the host sends gets put on the wire. | |
2474 | */ | |
2475 | if (txop == BG_OP_IN_CRC_OUT_CRC) { | |
2476 | txop = BG_OP_RAW_MODE; | |
2477 | rxop = BG_OP_RAW_MODE; | |
2478 | } | |
2479 | } | |
2480 | ||
2481 | ||
9c6aa9d7 | 2482 | if (lpfc_cmd_protect(sc, LPFC_CHECK_PROTECT_REF)) |
a6887e28 JS |
2483 | bf_set(lpfc_sli4_sge_dif_re, diseed, checking); |
2484 | else | |
2485 | bf_set(lpfc_sli4_sge_dif_re, diseed, 0); | |
2486 | ||
acd6859b JS |
2487 | /* setup DISEED with the rest of the info */ |
2488 | bf_set(lpfc_sli4_sge_dif_optx, diseed, txop); | |
2489 | bf_set(lpfc_sli4_sge_dif_oprx, diseed, rxop); | |
a6887e28 | 2490 | |
acd6859b JS |
2491 | bf_set(lpfc_sli4_sge_dif_ai, diseed, 1); |
2492 | bf_set(lpfc_sli4_sge_dif_me, diseed, 0); | |
2493 | ||
2494 | /* Endianness conversion if necessary for DISEED */ | |
2495 | diseed->word2 = cpu_to_le32(diseed->word2); | |
2496 | diseed->word3 = cpu_to_le32(diseed->word3); | |
2497 | ||
2498 | /* advance sgl and increment bde count */ | |
2499 | num_sge++; | |
2500 | sgl++; | |
e2a0a9d6 JS |
2501 | |
2502 | /* setup the first BDE that points to protection buffer */ | |
7f86059a JS |
2503 | protphysaddr = sg_dma_address(sgpe) + protgroup_offset; |
2504 | protgroup_len = sg_dma_len(sgpe) - protgroup_offset; | |
e2a0a9d6 | 2505 | |
e2a0a9d6 JS |
2506 | /* must be integer multiple of the DIF block length */ |
2507 | BUG_ON(protgroup_len % 8); | |
2508 | ||
acd6859b JS |
2509 | /* Now setup DIF SGE */ |
2510 | sgl->word2 = 0; | |
2511 | bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DIF); | |
2512 | sgl->addr_hi = le32_to_cpu(putPaddrHigh(protphysaddr)); | |
2513 | sgl->addr_lo = le32_to_cpu(putPaddrLow(protphysaddr)); | |
2514 | sgl->word2 = cpu_to_le32(sgl->word2); | |
7f86059a | 2515 | |
e2a0a9d6 JS |
2516 | protgrp_blks = protgroup_len / 8; |
2517 | protgrp_bytes = protgrp_blks * blksize; | |
2518 | ||
acd6859b JS |
2519 | /* check if DIF SGE is crossing the 4K boundary; if so split */ |
2520 | if ((sgl->addr_lo & 0xfff) + protgroup_len > 0x1000) { | |
2521 | protgroup_remainder = 0x1000 - (sgl->addr_lo & 0xfff); | |
7f86059a JS |
2522 | protgroup_offset += protgroup_remainder; |
2523 | protgrp_blks = protgroup_remainder / 8; | |
7c56b9fd | 2524 | protgrp_bytes = protgrp_blks * blksize; |
7f86059a JS |
2525 | } else { |
2526 | protgroup_offset = 0; | |
2527 | curr_prot++; | |
2528 | } | |
e2a0a9d6 | 2529 | |
acd6859b | 2530 | num_sge++; |
e2a0a9d6 | 2531 | |
acd6859b | 2532 | /* setup SGE's for data blocks associated with DIF data */ |
e2a0a9d6 JS |
2533 | pgdone = 0; |
2534 | subtotal = 0; /* total bytes processed for current prot grp */ | |
2535 | while (!pgdone) { | |
96f7077f JS |
2536 | /* Check to see if we ran out of space */ |
2537 | if (num_sge >= phba->cfg_total_seg_cnt) | |
2538 | return num_sge + 1; | |
2539 | ||
e2a0a9d6 | 2540 | if (!sgde) { |
6a9c52cf | 2541 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
acd6859b | 2542 | "9086 BLKGRD:%s Invalid data segment\n", |
e2a0a9d6 JS |
2543 | __func__); |
2544 | return 0; | |
2545 | } | |
acd6859b | 2546 | sgl++; |
e2a0a9d6 | 2547 | dataphysaddr = sg_dma_address(sgde) + split_offset; |
e2a0a9d6 JS |
2548 | |
2549 | remainder = sg_dma_len(sgde) - split_offset; | |
2550 | ||
2551 | if ((subtotal + remainder) <= protgrp_bytes) { | |
2552 | /* we can use this whole buffer */ | |
acd6859b | 2553 | dma_len = remainder; |
e2a0a9d6 JS |
2554 | split_offset = 0; |
2555 | ||
2556 | if ((subtotal + remainder) == protgrp_bytes) | |
2557 | pgdone = 1; | |
2558 | } else { | |
2559 | /* must split this buffer with next prot grp */ | |
acd6859b JS |
2560 | dma_len = protgrp_bytes - subtotal; |
2561 | split_offset += dma_len; | |
e2a0a9d6 JS |
2562 | } |
2563 | ||
acd6859b | 2564 | subtotal += dma_len; |
e2a0a9d6 | 2565 | |
acd6859b JS |
2566 | sgl->addr_lo = cpu_to_le32(putPaddrLow(dataphysaddr)); |
2567 | sgl->addr_hi = cpu_to_le32(putPaddrHigh(dataphysaddr)); | |
2568 | bf_set(lpfc_sli4_sge_last, sgl, 0); | |
2569 | bf_set(lpfc_sli4_sge_offset, sgl, dma_offset); | |
2570 | bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA); | |
e2a0a9d6 | 2571 | |
acd6859b JS |
2572 | sgl->sge_len = cpu_to_le32(dma_len); |
2573 | dma_offset += dma_len; | |
2574 | ||
2575 | num_sge++; | |
e2a0a9d6 JS |
2576 | curr_data++; |
2577 | ||
2578 | if (split_offset) | |
2579 | break; | |
2580 | ||
2581 | /* Move to the next s/g segment if possible */ | |
2582 | sgde = sg_next(sgde); | |
2583 | } | |
2584 | ||
7f86059a JS |
2585 | if (protgroup_offset) { |
2586 | /* update the reference tag */ | |
2587 | reftag += protgrp_blks; | |
acd6859b | 2588 | sgl++; |
7f86059a JS |
2589 | continue; |
2590 | } | |
2591 | ||
e2a0a9d6 JS |
2592 | /* are we done ? */ |
2593 | if (curr_prot == protcnt) { | |
acd6859b | 2594 | bf_set(lpfc_sli4_sge_last, sgl, 1); |
e2a0a9d6 JS |
2595 | alldone = 1; |
2596 | } else if (curr_prot < protcnt) { | |
2597 | /* advance to next prot buffer */ | |
2598 | sgpe = sg_next(sgpe); | |
acd6859b | 2599 | sgl++; |
e2a0a9d6 JS |
2600 | |
2601 | /* update the reference tag */ | |
2602 | reftag += protgrp_blks; | |
2603 | } else { | |
2604 | /* if we're here, we have a bug */ | |
6a9c52cf | 2605 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
acd6859b | 2606 | "9085 BLKGRD: bug in %s\n", __func__); |
e2a0a9d6 JS |
2607 | } |
2608 | ||
2609 | } while (!alldone); | |
acd6859b | 2610 | |
e2a0a9d6 JS |
2611 | out: |
2612 | ||
acd6859b | 2613 | return num_sge; |
e2a0a9d6 | 2614 | } |
7f86059a | 2615 | |
acd6859b JS |
2616 | /** |
2617 | * lpfc_prot_group_type - Get prtotection group type of SCSI command | |
2618 | * @phba: The Hba for which this call is being executed. | |
2619 | * @sc: pointer to scsi command we're working on | |
2620 | * | |
e2a0a9d6 JS |
2621 | * Given a SCSI command that supports DIF, determine composition of protection |
2622 | * groups involved in setting up buffer lists | |
2623 | * | |
acd6859b JS |
2624 | * Returns: Protection group type (with or without DIF) |
2625 | * | |
2626 | **/ | |
e2a0a9d6 JS |
2627 | static int |
2628 | lpfc_prot_group_type(struct lpfc_hba *phba, struct scsi_cmnd *sc) | |
2629 | { | |
2630 | int ret = LPFC_PG_TYPE_INVALID; | |
2631 | unsigned char op = scsi_get_prot_op(sc); | |
2632 | ||
2633 | switch (op) { | |
2634 | case SCSI_PROT_READ_STRIP: | |
2635 | case SCSI_PROT_WRITE_INSERT: | |
2636 | ret = LPFC_PG_TYPE_NO_DIF; | |
2637 | break; | |
2638 | case SCSI_PROT_READ_INSERT: | |
2639 | case SCSI_PROT_WRITE_STRIP: | |
2640 | case SCSI_PROT_READ_PASS: | |
2641 | case SCSI_PROT_WRITE_PASS: | |
e2a0a9d6 JS |
2642 | ret = LPFC_PG_TYPE_DIF_BUF; |
2643 | break; | |
2644 | default: | |
9c6aa9d7 JS |
2645 | if (phba) |
2646 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, | |
2647 | "9021 Unsupported protection op:%d\n", | |
2648 | op); | |
e2a0a9d6 JS |
2649 | break; |
2650 | } | |
e2a0a9d6 JS |
2651 | return ret; |
2652 | } | |
2653 | ||
a6887e28 JS |
2654 | /** |
2655 | * lpfc_bg_scsi_adjust_dl - Adjust SCSI data length for BlockGuard | |
2656 | * @phba: The Hba for which this call is being executed. | |
2657 | * @lpfc_cmd: The scsi buffer which is going to be adjusted. | |
2658 | * | |
2659 | * Adjust the data length to account for how much data | |
2660 | * is actually on the wire. | |
2661 | * | |
2662 | * returns the adjusted data length | |
2663 | **/ | |
2664 | static int | |
2665 | lpfc_bg_scsi_adjust_dl(struct lpfc_hba *phba, | |
2666 | struct lpfc_scsi_buf *lpfc_cmd) | |
2667 | { | |
2668 | struct scsi_cmnd *sc = lpfc_cmd->pCmd; | |
2669 | int fcpdl; | |
2670 | ||
2671 | fcpdl = scsi_bufflen(sc); | |
2672 | ||
2673 | /* Check if there is protection data on the wire */ | |
2674 | if (sc->sc_data_direction == DMA_FROM_DEVICE) { | |
9c6aa9d7 | 2675 | /* Read check for protection data */ |
a6887e28 JS |
2676 | if (scsi_get_prot_op(sc) == SCSI_PROT_READ_INSERT) |
2677 | return fcpdl; | |
2678 | ||
2679 | } else { | |
9c6aa9d7 | 2680 | /* Write check for protection data */ |
a6887e28 JS |
2681 | if (scsi_get_prot_op(sc) == SCSI_PROT_WRITE_STRIP) |
2682 | return fcpdl; | |
2683 | } | |
2684 | ||
2685 | /* | |
2686 | * If we are in DIF Type 1 mode every data block has a 8 byte | |
9c6aa9d7 JS |
2687 | * DIF (trailer) attached to it. Must ajust FCP data length |
2688 | * to account for the protection data. | |
a6887e28 | 2689 | */ |
9c6aa9d7 | 2690 | fcpdl += (fcpdl / lpfc_cmd_blksize(sc)) * 8; |
a6887e28 JS |
2691 | |
2692 | return fcpdl; | |
2693 | } | |
2694 | ||
acd6859b JS |
2695 | /** |
2696 | * lpfc_bg_scsi_prep_dma_buf_s3 - DMA mapping for scsi buffer to SLI3 IF spec | |
2697 | * @phba: The Hba for which this call is being executed. | |
2698 | * @lpfc_cmd: The scsi buffer which is going to be prep'ed. | |
2699 | * | |
e2a0a9d6 JS |
2700 | * This is the protection/DIF aware version of |
2701 | * lpfc_scsi_prep_dma_buf(). It may be a good idea to combine the | |
2702 | * two functions eventually, but for now, it's here | |
acd6859b | 2703 | **/ |
e2a0a9d6 | 2704 | static int |
acd6859b | 2705 | lpfc_bg_scsi_prep_dma_buf_s3(struct lpfc_hba *phba, |
e2a0a9d6 JS |
2706 | struct lpfc_scsi_buf *lpfc_cmd) |
2707 | { | |
2708 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; | |
2709 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
2710 | struct ulp_bde64 *bpl = lpfc_cmd->fcp_bpl; | |
2711 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; | |
2712 | uint32_t num_bde = 0; | |
2713 | int datasegcnt, protsegcnt, datadir = scsi_cmnd->sc_data_direction; | |
2714 | int prot_group_type = 0; | |
a6887e28 | 2715 | int fcpdl; |
e2a0a9d6 JS |
2716 | |
2717 | /* | |
2718 | * Start the lpfc command prep by bumping the bpl beyond fcp_cmnd | |
2719 | * fcp_rsp regions to the first data bde entry | |
2720 | */ | |
2721 | bpl += 2; | |
2722 | if (scsi_sg_count(scsi_cmnd)) { | |
2723 | /* | |
2724 | * The driver stores the segment count returned from pci_map_sg | |
2725 | * because this a count of dma-mappings used to map the use_sg | |
2726 | * pages. They are not guaranteed to be the same for those | |
2727 | * architectures that implement an IOMMU. | |
2728 | */ | |
2729 | datasegcnt = dma_map_sg(&phba->pcidev->dev, | |
2730 | scsi_sglist(scsi_cmnd), | |
2731 | scsi_sg_count(scsi_cmnd), datadir); | |
2732 | if (unlikely(!datasegcnt)) | |
2733 | return 1; | |
2734 | ||
2735 | lpfc_cmd->seg_cnt = datasegcnt; | |
96f7077f JS |
2736 | |
2737 | /* First check if data segment count from SCSI Layer is good */ | |
2738 | if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) | |
2739 | goto err; | |
e2a0a9d6 JS |
2740 | |
2741 | prot_group_type = lpfc_prot_group_type(phba, scsi_cmnd); | |
2742 | ||
2743 | switch (prot_group_type) { | |
2744 | case LPFC_PG_TYPE_NO_DIF: | |
96f7077f JS |
2745 | |
2746 | /* Here we need to add a PDE5 and PDE6 to the count */ | |
2747 | if ((lpfc_cmd->seg_cnt + 2) > phba->cfg_total_seg_cnt) | |
2748 | goto err; | |
2749 | ||
e2a0a9d6 JS |
2750 | num_bde = lpfc_bg_setup_bpl(phba, scsi_cmnd, bpl, |
2751 | datasegcnt); | |
c9404c9c | 2752 | /* we should have 2 or more entries in buffer list */ |
e2a0a9d6 JS |
2753 | if (num_bde < 2) |
2754 | goto err; | |
2755 | break; | |
96f7077f JS |
2756 | |
2757 | case LPFC_PG_TYPE_DIF_BUF: | |
e2a0a9d6 JS |
2758 | /* |
2759 | * This type indicates that protection buffers are | |
2760 | * passed to the driver, so that needs to be prepared | |
2761 | * for DMA | |
2762 | */ | |
2763 | protsegcnt = dma_map_sg(&phba->pcidev->dev, | |
2764 | scsi_prot_sglist(scsi_cmnd), | |
2765 | scsi_prot_sg_count(scsi_cmnd), datadir); | |
2766 | if (unlikely(!protsegcnt)) { | |
2767 | scsi_dma_unmap(scsi_cmnd); | |
2768 | return 1; | |
2769 | } | |
2770 | ||
2771 | lpfc_cmd->prot_seg_cnt = protsegcnt; | |
96f7077f JS |
2772 | |
2773 | /* | |
2774 | * There is a minimun of 4 BPLs used for every | |
2775 | * protection data segment. | |
2776 | */ | |
2777 | if ((lpfc_cmd->prot_seg_cnt * 4) > | |
2778 | (phba->cfg_total_seg_cnt - 2)) | |
2779 | goto err; | |
e2a0a9d6 JS |
2780 | |
2781 | num_bde = lpfc_bg_setup_bpl_prot(phba, scsi_cmnd, bpl, | |
2782 | datasegcnt, protsegcnt); | |
c9404c9c | 2783 | /* we should have 3 or more entries in buffer list */ |
96f7077f JS |
2784 | if ((num_bde < 3) || |
2785 | (num_bde > phba->cfg_total_seg_cnt)) | |
e2a0a9d6 JS |
2786 | goto err; |
2787 | break; | |
96f7077f | 2788 | |
e2a0a9d6 JS |
2789 | case LPFC_PG_TYPE_INVALID: |
2790 | default: | |
96f7077f JS |
2791 | scsi_dma_unmap(scsi_cmnd); |
2792 | lpfc_cmd->seg_cnt = 0; | |
2793 | ||
e2a0a9d6 JS |
2794 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, |
2795 | "9022 Unexpected protection group %i\n", | |
2796 | prot_group_type); | |
2797 | return 1; | |
2798 | } | |
2799 | } | |
2800 | ||
2801 | /* | |
2802 | * Finish initializing those IOCB fields that are dependent on the | |
2803 | * scsi_cmnd request_buffer. Note that the bdeSize is explicitly | |
2804 | * reinitialized since all iocb memory resources are used many times | |
2805 | * for transmit, receive, and continuation bpl's. | |
2806 | */ | |
2807 | iocb_cmd->un.fcpi64.bdl.bdeSize = (2 * sizeof(struct ulp_bde64)); | |
2808 | iocb_cmd->un.fcpi64.bdl.bdeSize += (num_bde * sizeof(struct ulp_bde64)); | |
2809 | iocb_cmd->ulpBdeCount = 1; | |
2810 | iocb_cmd->ulpLe = 1; | |
2811 | ||
a6887e28 | 2812 | fcpdl = lpfc_bg_scsi_adjust_dl(phba, lpfc_cmd); |
e2a0a9d6 JS |
2813 | fcp_cmnd->fcpDl = be32_to_cpu(fcpdl); |
2814 | ||
2815 | /* | |
2816 | * Due to difference in data length between DIF/non-DIF paths, | |
2817 | * we need to set word 4 of IOCB here | |
2818 | */ | |
2819 | iocb_cmd->un.fcpi.fcpi_parm = fcpdl; | |
2820 | ||
dea3101e | 2821 | return 0; |
e2a0a9d6 | 2822 | err: |
96f7077f JS |
2823 | if (lpfc_cmd->seg_cnt) |
2824 | scsi_dma_unmap(scsi_cmnd); | |
2825 | if (lpfc_cmd->prot_seg_cnt) | |
2826 | dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(scsi_cmnd), | |
2827 | scsi_prot_sg_count(scsi_cmnd), | |
2828 | scsi_cmnd->sc_data_direction); | |
2829 | ||
e2a0a9d6 | 2830 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, |
96f7077f JS |
2831 | "9023 Cannot setup S/G List for HBA" |
2832 | "IO segs %d/%d BPL %d SCSI %d: %d %d\n", | |
2833 | lpfc_cmd->seg_cnt, lpfc_cmd->prot_seg_cnt, | |
2834 | phba->cfg_total_seg_cnt, phba->cfg_sg_seg_cnt, | |
e2a0a9d6 | 2835 | prot_group_type, num_bde); |
96f7077f JS |
2836 | |
2837 | lpfc_cmd->seg_cnt = 0; | |
2838 | lpfc_cmd->prot_seg_cnt = 0; | |
e2a0a9d6 JS |
2839 | return 1; |
2840 | } | |
2841 | ||
737d4248 JS |
2842 | /* |
2843 | * This function calcuates the T10 DIF guard tag | |
2844 | * on the specified data using a CRC algorithmn | |
2845 | * using crc_t10dif. | |
2846 | */ | |
7bfe781e | 2847 | static uint16_t |
737d4248 JS |
2848 | lpfc_bg_crc(uint8_t *data, int count) |
2849 | { | |
2850 | uint16_t crc = 0; | |
2851 | uint16_t x; | |
2852 | ||
2853 | crc = crc_t10dif(data, count); | |
2854 | x = cpu_to_be16(crc); | |
2855 | return x; | |
2856 | } | |
2857 | ||
2858 | /* | |
2859 | * This function calcuates the T10 DIF guard tag | |
2860 | * on the specified data using a CSUM algorithmn | |
2861 | * using ip_compute_csum. | |
2862 | */ | |
7bfe781e | 2863 | static uint16_t |
737d4248 JS |
2864 | lpfc_bg_csum(uint8_t *data, int count) |
2865 | { | |
2866 | uint16_t ret; | |
2867 | ||
2868 | ret = ip_compute_csum(data, count); | |
2869 | return ret; | |
2870 | } | |
2871 | ||
2872 | /* | |
2873 | * This function examines the protection data to try to determine | |
2874 | * what type of T10-DIF error occurred. | |
2875 | */ | |
7bfe781e | 2876 | static void |
737d4248 JS |
2877 | lpfc_calc_bg_err(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) |
2878 | { | |
2879 | struct scatterlist *sgpe; /* s/g prot entry */ | |
2880 | struct scatterlist *sgde; /* s/g data entry */ | |
2881 | struct scsi_cmnd *cmd = lpfc_cmd->pCmd; | |
2882 | struct scsi_dif_tuple *src = NULL; | |
2883 | uint8_t *data_src = NULL; | |
2884 | uint16_t guard_tag, guard_type; | |
2885 | uint16_t start_app_tag, app_tag; | |
2886 | uint32_t start_ref_tag, ref_tag; | |
2887 | int prot, protsegcnt; | |
2888 | int err_type, len, data_len; | |
2889 | int chk_ref, chk_app, chk_guard; | |
2890 | uint16_t sum; | |
2891 | unsigned blksize; | |
2892 | ||
2893 | err_type = BGS_GUARD_ERR_MASK; | |
2894 | sum = 0; | |
2895 | guard_tag = 0; | |
2896 | ||
2897 | /* First check to see if there is protection data to examine */ | |
2898 | prot = scsi_get_prot_op(cmd); | |
2899 | if ((prot == SCSI_PROT_READ_STRIP) || | |
2900 | (prot == SCSI_PROT_WRITE_INSERT) || | |
2901 | (prot == SCSI_PROT_NORMAL)) | |
2902 | goto out; | |
2903 | ||
2904 | /* Currently the driver just supports ref_tag and guard_tag checking */ | |
2905 | chk_ref = 1; | |
2906 | chk_app = 0; | |
2907 | chk_guard = 0; | |
2908 | ||
2909 | /* Setup a ptr to the protection data provided by the SCSI host */ | |
2910 | sgpe = scsi_prot_sglist(cmd); | |
2911 | protsegcnt = lpfc_cmd->prot_seg_cnt; | |
2912 | ||
2913 | if (sgpe && protsegcnt) { | |
2914 | ||
2915 | /* | |
2916 | * We will only try to verify guard tag if the segment | |
2917 | * data length is a multiple of the blksize. | |
2918 | */ | |
2919 | sgde = scsi_sglist(cmd); | |
2920 | blksize = lpfc_cmd_blksize(cmd); | |
2921 | data_src = (uint8_t *)sg_virt(sgde); | |
2922 | data_len = sgde->length; | |
2923 | if ((data_len & (blksize - 1)) == 0) | |
2924 | chk_guard = 1; | |
2925 | guard_type = scsi_host_get_guard(cmd->device->host); | |
2926 | ||
e85d8f9f | 2927 | src = (struct scsi_dif_tuple *)sg_virt(sgpe); |
a6887e28 | 2928 | start_ref_tag = (uint32_t)scsi_get_lba(cmd); /* Truncate LBA */ |
737d4248 | 2929 | start_app_tag = src->app_tag; |
737d4248 JS |
2930 | len = sgpe->length; |
2931 | while (src && protsegcnt) { | |
2932 | while (len) { | |
2933 | ||
2934 | /* | |
2935 | * First check to see if a protection data | |
2936 | * check is valid | |
2937 | */ | |
2938 | if ((src->ref_tag == 0xffffffff) || | |
2939 | (src->app_tag == 0xffff)) { | |
2940 | start_ref_tag++; | |
2941 | goto skipit; | |
2942 | } | |
2943 | ||
9c6aa9d7 | 2944 | /* First Guard Tag checking */ |
737d4248 JS |
2945 | if (chk_guard) { |
2946 | guard_tag = src->guard_tag; | |
9c6aa9d7 | 2947 | if (lpfc_cmd_guard_csum(cmd)) |
737d4248 JS |
2948 | sum = lpfc_bg_csum(data_src, |
2949 | blksize); | |
2950 | else | |
2951 | sum = lpfc_bg_crc(data_src, | |
2952 | blksize); | |
2953 | if ((guard_tag != sum)) { | |
2954 | err_type = BGS_GUARD_ERR_MASK; | |
2955 | goto out; | |
2956 | } | |
2957 | } | |
9c6aa9d7 JS |
2958 | |
2959 | /* Reference Tag checking */ | |
2960 | ref_tag = be32_to_cpu(src->ref_tag); | |
2961 | if (chk_ref && (ref_tag != start_ref_tag)) { | |
2962 | err_type = BGS_REFTAG_ERR_MASK; | |
2963 | goto out; | |
2964 | } | |
2965 | start_ref_tag++; | |
2966 | ||
2967 | /* App Tag checking */ | |
2968 | app_tag = src->app_tag; | |
2969 | if (chk_app && (app_tag != start_app_tag)) { | |
2970 | err_type = BGS_APPTAG_ERR_MASK; | |
2971 | goto out; | |
2972 | } | |
737d4248 JS |
2973 | skipit: |
2974 | len -= sizeof(struct scsi_dif_tuple); | |
2975 | if (len < 0) | |
2976 | len = 0; | |
2977 | src++; | |
2978 | ||
2979 | data_src += blksize; | |
2980 | data_len -= blksize; | |
2981 | ||
2982 | /* | |
2983 | * Are we at the end of the Data segment? | |
2984 | * The data segment is only used for Guard | |
2985 | * tag checking. | |
2986 | */ | |
2987 | if (chk_guard && (data_len == 0)) { | |
2988 | chk_guard = 0; | |
2989 | sgde = sg_next(sgde); | |
2990 | if (!sgde) | |
2991 | goto out; | |
2992 | ||
2993 | data_src = (uint8_t *)sg_virt(sgde); | |
2994 | data_len = sgde->length; | |
2995 | if ((data_len & (blksize - 1)) == 0) | |
2996 | chk_guard = 1; | |
2997 | } | |
2998 | } | |
2999 | ||
3000 | /* Goto the next Protection data segment */ | |
3001 | sgpe = sg_next(sgpe); | |
3002 | if (sgpe) { | |
3003 | src = (struct scsi_dif_tuple *)sg_virt(sgpe); | |
3004 | len = sgpe->length; | |
3005 | } else { | |
3006 | src = NULL; | |
3007 | } | |
3008 | protsegcnt--; | |
3009 | } | |
3010 | } | |
3011 | out: | |
3012 | if (err_type == BGS_GUARD_ERR_MASK) { | |
3013 | scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, | |
3014 | 0x10, 0x1); | |
3015 | cmd->result = DRIVER_SENSE << 24 | |
3016 | | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION); | |
3017 | phba->bg_guard_err_cnt++; | |
3018 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, | |
3019 | "9069 BLKGRD: LBA %lx grd_tag error %x != %x\n", | |
3020 | (unsigned long)scsi_get_lba(cmd), | |
3021 | sum, guard_tag); | |
3022 | ||
3023 | } else if (err_type == BGS_REFTAG_ERR_MASK) { | |
3024 | scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, | |
3025 | 0x10, 0x3); | |
3026 | cmd->result = DRIVER_SENSE << 24 | |
3027 | | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION); | |
3028 | ||
3029 | phba->bg_reftag_err_cnt++; | |
3030 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, | |
3031 | "9066 BLKGRD: LBA %lx ref_tag error %x != %x\n", | |
3032 | (unsigned long)scsi_get_lba(cmd), | |
3033 | ref_tag, start_ref_tag); | |
3034 | ||
3035 | } else if (err_type == BGS_APPTAG_ERR_MASK) { | |
3036 | scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, | |
3037 | 0x10, 0x2); | |
3038 | cmd->result = DRIVER_SENSE << 24 | |
3039 | | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION); | |
3040 | ||
3041 | phba->bg_apptag_err_cnt++; | |
3042 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, | |
3043 | "9041 BLKGRD: LBA %lx app_tag error %x != %x\n", | |
3044 | (unsigned long)scsi_get_lba(cmd), | |
3045 | app_tag, start_app_tag); | |
3046 | } | |
3047 | } | |
3048 | ||
3049 | ||
e2a0a9d6 JS |
3050 | /* |
3051 | * This function checks for BlockGuard errors detected by | |
3052 | * the HBA. In case of errors, the ASC/ASCQ fields in the | |
3053 | * sense buffer will be set accordingly, paired with | |
3054 | * ILLEGAL_REQUEST to signal to the kernel that the HBA | |
3055 | * detected corruption. | |
3056 | * | |
3057 | * Returns: | |
3058 | * 0 - No error found | |
3059 | * 1 - BlockGuard error found | |
3060 | * -1 - Internal error (bad profile, ...etc) | |
3061 | */ | |
3062 | static int | |
3063 | lpfc_parse_bg_err(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd, | |
3064 | struct lpfc_iocbq *pIocbOut) | |
3065 | { | |
3066 | struct scsi_cmnd *cmd = lpfc_cmd->pCmd; | |
3067 | struct sli3_bg_fields *bgf = &pIocbOut->iocb.unsli3.sli3_bg; | |
3068 | int ret = 0; | |
3069 | uint32_t bghm = bgf->bghm; | |
3070 | uint32_t bgstat = bgf->bgstat; | |
3071 | uint64_t failing_sector = 0; | |
3072 | ||
e2a0a9d6 JS |
3073 | spin_lock(&_dump_buf_lock); |
3074 | if (!_dump_buf_done) { | |
6a9c52cf JS |
3075 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9070 BLKGRD: Saving" |
3076 | " Data for %u blocks to debugfs\n", | |
e2a0a9d6 | 3077 | (cmd->cmnd[7] << 8 | cmd->cmnd[8])); |
6a9c52cf | 3078 | lpfc_debug_save_data(phba, cmd); |
e2a0a9d6 JS |
3079 | |
3080 | /* If we have a prot sgl, save the DIF buffer */ | |
3081 | if (lpfc_prot_group_type(phba, cmd) == | |
3082 | LPFC_PG_TYPE_DIF_BUF) { | |
6a9c52cf JS |
3083 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9071 BLKGRD: " |
3084 | "Saving DIF for %u blocks to debugfs\n", | |
3085 | (cmd->cmnd[7] << 8 | cmd->cmnd[8])); | |
3086 | lpfc_debug_save_dif(phba, cmd); | |
e2a0a9d6 JS |
3087 | } |
3088 | ||
3089 | _dump_buf_done = 1; | |
3090 | } | |
3091 | spin_unlock(&_dump_buf_lock); | |
3092 | ||
3093 | if (lpfc_bgs_get_invalid_prof(bgstat)) { | |
3094 | cmd->result = ScsiResult(DID_ERROR, 0); | |
737d4248 JS |
3095 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, |
3096 | "9072 BLKGRD: Invalid BG Profile in cmd" | |
3097 | " 0x%x lba 0x%llx blk cnt 0x%x " | |
3098 | "bgstat=x%x bghm=x%x\n", cmd->cmnd[0], | |
3099 | (unsigned long long)scsi_get_lba(cmd), | |
3100 | blk_rq_sectors(cmd->request), bgstat, bghm); | |
e2a0a9d6 JS |
3101 | ret = (-1); |
3102 | goto out; | |
3103 | } | |
3104 | ||
3105 | if (lpfc_bgs_get_uninit_dif_block(bgstat)) { | |
3106 | cmd->result = ScsiResult(DID_ERROR, 0); | |
737d4248 JS |
3107 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, |
3108 | "9073 BLKGRD: Invalid BG PDIF Block in cmd" | |
3109 | " 0x%x lba 0x%llx blk cnt 0x%x " | |
3110 | "bgstat=x%x bghm=x%x\n", cmd->cmnd[0], | |
3111 | (unsigned long long)scsi_get_lba(cmd), | |
3112 | blk_rq_sectors(cmd->request), bgstat, bghm); | |
e2a0a9d6 JS |
3113 | ret = (-1); |
3114 | goto out; | |
3115 | } | |
3116 | ||
3117 | if (lpfc_bgs_get_guard_err(bgstat)) { | |
3118 | ret = 1; | |
3119 | ||
3120 | scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, | |
3121 | 0x10, 0x1); | |
1c9fbafc | 3122 | cmd->result = DRIVER_SENSE << 24 |
e2a0a9d6 JS |
3123 | | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION); |
3124 | phba->bg_guard_err_cnt++; | |
737d4248 JS |
3125 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, |
3126 | "9055 BLKGRD: Guard Tag error in cmd" | |
3127 | " 0x%x lba 0x%llx blk cnt 0x%x " | |
3128 | "bgstat=x%x bghm=x%x\n", cmd->cmnd[0], | |
3129 | (unsigned long long)scsi_get_lba(cmd), | |
3130 | blk_rq_sectors(cmd->request), bgstat, bghm); | |
e2a0a9d6 JS |
3131 | } |
3132 | ||
3133 | if (lpfc_bgs_get_reftag_err(bgstat)) { | |
3134 | ret = 1; | |
3135 | ||
3136 | scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, | |
3137 | 0x10, 0x3); | |
1c9fbafc | 3138 | cmd->result = DRIVER_SENSE << 24 |
e2a0a9d6 JS |
3139 | | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION); |
3140 | ||
3141 | phba->bg_reftag_err_cnt++; | |
737d4248 JS |
3142 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, |
3143 | "9056 BLKGRD: Ref Tag error in cmd" | |
3144 | " 0x%x lba 0x%llx blk cnt 0x%x " | |
3145 | "bgstat=x%x bghm=x%x\n", cmd->cmnd[0], | |
3146 | (unsigned long long)scsi_get_lba(cmd), | |
3147 | blk_rq_sectors(cmd->request), bgstat, bghm); | |
e2a0a9d6 JS |
3148 | } |
3149 | ||
3150 | if (lpfc_bgs_get_apptag_err(bgstat)) { | |
3151 | ret = 1; | |
3152 | ||
3153 | scsi_build_sense_buffer(1, cmd->sense_buffer, ILLEGAL_REQUEST, | |
3154 | 0x10, 0x2); | |
1c9fbafc | 3155 | cmd->result = DRIVER_SENSE << 24 |
e2a0a9d6 JS |
3156 | | ScsiResult(DID_ABORT, SAM_STAT_CHECK_CONDITION); |
3157 | ||
3158 | phba->bg_apptag_err_cnt++; | |
737d4248 JS |
3159 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, |
3160 | "9061 BLKGRD: App Tag error in cmd" | |
3161 | " 0x%x lba 0x%llx blk cnt 0x%x " | |
3162 | "bgstat=x%x bghm=x%x\n", cmd->cmnd[0], | |
3163 | (unsigned long long)scsi_get_lba(cmd), | |
3164 | blk_rq_sectors(cmd->request), bgstat, bghm); | |
e2a0a9d6 JS |
3165 | } |
3166 | ||
3167 | if (lpfc_bgs_get_hi_water_mark_present(bgstat)) { | |
3168 | /* | |
3169 | * setup sense data descriptor 0 per SPC-4 as an information | |
7c56b9fd JS |
3170 | * field, and put the failing LBA in it. |
3171 | * This code assumes there was also a guard/app/ref tag error | |
3172 | * indication. | |
e2a0a9d6 | 3173 | */ |
7c56b9fd JS |
3174 | cmd->sense_buffer[7] = 0xc; /* Additional sense length */ |
3175 | cmd->sense_buffer[8] = 0; /* Information descriptor type */ | |
3176 | cmd->sense_buffer[9] = 0xa; /* Additional descriptor length */ | |
3177 | cmd->sense_buffer[10] = 0x80; /* Validity bit */ | |
acd6859b JS |
3178 | |
3179 | /* bghm is a "on the wire" FC frame based count */ | |
3180 | switch (scsi_get_prot_op(cmd)) { | |
3181 | case SCSI_PROT_READ_INSERT: | |
3182 | case SCSI_PROT_WRITE_STRIP: | |
3183 | bghm /= cmd->device->sector_size; | |
3184 | break; | |
3185 | case SCSI_PROT_READ_STRIP: | |
3186 | case SCSI_PROT_WRITE_INSERT: | |
3187 | case SCSI_PROT_READ_PASS: | |
3188 | case SCSI_PROT_WRITE_PASS: | |
3189 | bghm /= (cmd->device->sector_size + | |
3190 | sizeof(struct scsi_dif_tuple)); | |
3191 | break; | |
3192 | } | |
e2a0a9d6 JS |
3193 | |
3194 | failing_sector = scsi_get_lba(cmd); | |
3195 | failing_sector += bghm; | |
3196 | ||
7c56b9fd JS |
3197 | /* Descriptor Information */ |
3198 | put_unaligned_be64(failing_sector, &cmd->sense_buffer[12]); | |
e2a0a9d6 JS |
3199 | } |
3200 | ||
3201 | if (!ret) { | |
3202 | /* No error was reported - problem in FW? */ | |
737d4248 JS |
3203 | lpfc_printf_log(phba, KERN_WARNING, LOG_FCP | LOG_BG, |
3204 | "9057 BLKGRD: Unknown error in cmd" | |
3205 | " 0x%x lba 0x%llx blk cnt 0x%x " | |
3206 | "bgstat=x%x bghm=x%x\n", cmd->cmnd[0], | |
3207 | (unsigned long long)scsi_get_lba(cmd), | |
3208 | blk_rq_sectors(cmd->request), bgstat, bghm); | |
3209 | ||
3210 | /* Calcuate what type of error it was */ | |
3211 | lpfc_calc_bg_err(phba, lpfc_cmd); | |
e2a0a9d6 | 3212 | } |
e2a0a9d6 JS |
3213 | out: |
3214 | return ret; | |
dea3101e | 3215 | } |
3216 | ||
da0436e9 JS |
3217 | /** |
3218 | * lpfc_scsi_prep_dma_buf_s4 - DMA mapping for scsi buffer to SLI4 IF spec | |
3219 | * @phba: The Hba for which this call is being executed. | |
3220 | * @lpfc_cmd: The scsi buffer which is going to be mapped. | |
3221 | * | |
3222 | * This routine does the pci dma mapping for scatter-gather list of scsi cmnd | |
3223 | * field of @lpfc_cmd for device with SLI-4 interface spec. | |
3224 | * | |
3225 | * Return codes: | |
6c8eea54 JS |
3226 | * 1 - Error |
3227 | * 0 - Success | |
da0436e9 JS |
3228 | **/ |
3229 | static int | |
3230 | lpfc_scsi_prep_dma_buf_s4(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) | |
3231 | { | |
3232 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; | |
3233 | struct scatterlist *sgel = NULL; | |
3234 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
3235 | struct sli4_sge *sgl = (struct sli4_sge *)lpfc_cmd->fcp_bpl; | |
fedd3b7b | 3236 | struct sli4_sge *first_data_sgl; |
da0436e9 JS |
3237 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; |
3238 | dma_addr_t physaddr; | |
3239 | uint32_t num_bde = 0; | |
3240 | uint32_t dma_len; | |
3241 | uint32_t dma_offset = 0; | |
3242 | int nseg; | |
fedd3b7b | 3243 | struct ulp_bde64 *bde; |
da0436e9 JS |
3244 | |
3245 | /* | |
3246 | * There are three possibilities here - use scatter-gather segment, use | |
3247 | * the single mapping, or neither. Start the lpfc command prep by | |
3248 | * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first | |
3249 | * data bde entry. | |
3250 | */ | |
3251 | if (scsi_sg_count(scsi_cmnd)) { | |
3252 | /* | |
3253 | * The driver stores the segment count returned from pci_map_sg | |
3254 | * because this a count of dma-mappings used to map the use_sg | |
3255 | * pages. They are not guaranteed to be the same for those | |
3256 | * architectures that implement an IOMMU. | |
3257 | */ | |
3258 | ||
3259 | nseg = scsi_dma_map(scsi_cmnd); | |
3260 | if (unlikely(!nseg)) | |
3261 | return 1; | |
3262 | sgl += 1; | |
3263 | /* clear the last flag in the fcp_rsp map entry */ | |
3264 | sgl->word2 = le32_to_cpu(sgl->word2); | |
3265 | bf_set(lpfc_sli4_sge_last, sgl, 0); | |
3266 | sgl->word2 = cpu_to_le32(sgl->word2); | |
3267 | sgl += 1; | |
fedd3b7b | 3268 | first_data_sgl = sgl; |
da0436e9 JS |
3269 | lpfc_cmd->seg_cnt = nseg; |
3270 | if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) { | |
6a9c52cf JS |
3271 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, "9074 BLKGRD:" |
3272 | " %s: Too many sg segments from " | |
3273 | "dma_map_sg. Config %d, seg_cnt %d\n", | |
3274 | __func__, phba->cfg_sg_seg_cnt, | |
da0436e9 | 3275 | lpfc_cmd->seg_cnt); |
96f7077f | 3276 | lpfc_cmd->seg_cnt = 0; |
da0436e9 JS |
3277 | scsi_dma_unmap(scsi_cmnd); |
3278 | return 1; | |
3279 | } | |
3280 | ||
3281 | /* | |
3282 | * The driver established a maximum scatter-gather segment count | |
3283 | * during probe that limits the number of sg elements in any | |
3284 | * single scsi command. Just run through the seg_cnt and format | |
3285 | * the sge's. | |
3286 | * When using SLI-3 the driver will try to fit all the BDEs into | |
3287 | * the IOCB. If it can't then the BDEs get added to a BPL as it | |
3288 | * does for SLI-2 mode. | |
3289 | */ | |
3290 | scsi_for_each_sg(scsi_cmnd, sgel, nseg, num_bde) { | |
3291 | physaddr = sg_dma_address(sgel); | |
3292 | dma_len = sg_dma_len(sgel); | |
da0436e9 JS |
3293 | sgl->addr_lo = cpu_to_le32(putPaddrLow(physaddr)); |
3294 | sgl->addr_hi = cpu_to_le32(putPaddrHigh(physaddr)); | |
0558056c | 3295 | sgl->word2 = le32_to_cpu(sgl->word2); |
da0436e9 JS |
3296 | if ((num_bde + 1) == nseg) |
3297 | bf_set(lpfc_sli4_sge_last, sgl, 1); | |
3298 | else | |
3299 | bf_set(lpfc_sli4_sge_last, sgl, 0); | |
3300 | bf_set(lpfc_sli4_sge_offset, sgl, dma_offset); | |
f9bb2da1 | 3301 | bf_set(lpfc_sli4_sge_type, sgl, LPFC_SGE_TYPE_DATA); |
da0436e9 | 3302 | sgl->word2 = cpu_to_le32(sgl->word2); |
28baac74 | 3303 | sgl->sge_len = cpu_to_le32(dma_len); |
da0436e9 JS |
3304 | dma_offset += dma_len; |
3305 | sgl++; | |
3306 | } | |
fedd3b7b JS |
3307 | /* setup the performance hint (first data BDE) if enabled */ |
3308 | if (phba->sli3_options & LPFC_SLI4_PERFH_ENABLED) { | |
3309 | bde = (struct ulp_bde64 *) | |
3310 | &(iocb_cmd->unsli3.sli3Words[5]); | |
3311 | bde->addrLow = first_data_sgl->addr_lo; | |
3312 | bde->addrHigh = first_data_sgl->addr_hi; | |
3313 | bde->tus.f.bdeSize = | |
3314 | le32_to_cpu(first_data_sgl->sge_len); | |
3315 | bde->tus.f.bdeFlags = BUFF_TYPE_BDE_64; | |
3316 | bde->tus.w = cpu_to_le32(bde->tus.w); | |
3317 | } | |
da0436e9 JS |
3318 | } else { |
3319 | sgl += 1; | |
3320 | /* clear the last flag in the fcp_rsp map entry */ | |
3321 | sgl->word2 = le32_to_cpu(sgl->word2); | |
3322 | bf_set(lpfc_sli4_sge_last, sgl, 1); | |
3323 | sgl->word2 = cpu_to_le32(sgl->word2); | |
3324 | } | |
3325 | ||
3326 | /* | |
3327 | * Finish initializing those IOCB fields that are dependent on the | |
3328 | * scsi_cmnd request_buffer. Note that for SLI-2 the bdeSize is | |
3329 | * explicitly reinitialized. | |
3330 | * all iocb memory resources are reused. | |
3331 | */ | |
3332 | fcp_cmnd->fcpDl = cpu_to_be32(scsi_bufflen(scsi_cmnd)); | |
3333 | ||
3334 | /* | |
3335 | * Due to difference in data length between DIF/non-DIF paths, | |
3336 | * we need to set word 4 of IOCB here | |
3337 | */ | |
3338 | iocb_cmd->un.fcpi.fcpi_parm = scsi_bufflen(scsi_cmnd); | |
1ba981fd JS |
3339 | |
3340 | /* | |
3341 | * If the OAS driver feature is enabled and the lun is enabled for | |
3342 | * OAS, set the oas iocb related flags. | |
3343 | */ | |
f38fa0bb | 3344 | if ((phba->cfg_fof) && ((struct lpfc_device_data *) |
1ba981fd | 3345 | scsi_cmnd->device->hostdata)->oas_enabled) |
9bd2bff5 | 3346 | lpfc_cmd->cur_iocbq.iocb_flag |= (LPFC_IO_OAS | LPFC_IO_FOF); |
da0436e9 JS |
3347 | return 0; |
3348 | } | |
3349 | ||
acd6859b JS |
3350 | /** |
3351 | * lpfc_bg_scsi_prep_dma_buf_s4 - DMA mapping for scsi buffer to SLI4 IF spec | |
3352 | * @phba: The Hba for which this call is being executed. | |
3353 | * @lpfc_cmd: The scsi buffer which is going to be mapped. | |
3354 | * | |
3355 | * This is the protection/DIF aware version of | |
3356 | * lpfc_scsi_prep_dma_buf(). It may be a good idea to combine the | |
3357 | * two functions eventually, but for now, it's here | |
3358 | **/ | |
3359 | static int | |
3360 | lpfc_bg_scsi_prep_dma_buf_s4(struct lpfc_hba *phba, | |
3361 | struct lpfc_scsi_buf *lpfc_cmd) | |
3362 | { | |
3363 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; | |
3364 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
3365 | struct sli4_sge *sgl = (struct sli4_sge *)(lpfc_cmd->fcp_bpl); | |
3366 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; | |
96f7077f | 3367 | uint32_t num_sge = 0; |
acd6859b JS |
3368 | int datasegcnt, protsegcnt, datadir = scsi_cmnd->sc_data_direction; |
3369 | int prot_group_type = 0; | |
3370 | int fcpdl; | |
3371 | ||
3372 | /* | |
3373 | * Start the lpfc command prep by bumping the sgl beyond fcp_cmnd | |
96f7077f | 3374 | * fcp_rsp regions to the first data sge entry |
acd6859b JS |
3375 | */ |
3376 | if (scsi_sg_count(scsi_cmnd)) { | |
3377 | /* | |
3378 | * The driver stores the segment count returned from pci_map_sg | |
3379 | * because this a count of dma-mappings used to map the use_sg | |
3380 | * pages. They are not guaranteed to be the same for those | |
3381 | * architectures that implement an IOMMU. | |
3382 | */ | |
3383 | datasegcnt = dma_map_sg(&phba->pcidev->dev, | |
3384 | scsi_sglist(scsi_cmnd), | |
3385 | scsi_sg_count(scsi_cmnd), datadir); | |
3386 | if (unlikely(!datasegcnt)) | |
3387 | return 1; | |
3388 | ||
3389 | sgl += 1; | |
3390 | /* clear the last flag in the fcp_rsp map entry */ | |
3391 | sgl->word2 = le32_to_cpu(sgl->word2); | |
3392 | bf_set(lpfc_sli4_sge_last, sgl, 0); | |
3393 | sgl->word2 = cpu_to_le32(sgl->word2); | |
3394 | ||
3395 | sgl += 1; | |
3396 | lpfc_cmd->seg_cnt = datasegcnt; | |
96f7077f JS |
3397 | |
3398 | /* First check if data segment count from SCSI Layer is good */ | |
3399 | if (lpfc_cmd->seg_cnt > phba->cfg_sg_seg_cnt) | |
3400 | goto err; | |
acd6859b JS |
3401 | |
3402 | prot_group_type = lpfc_prot_group_type(phba, scsi_cmnd); | |
3403 | ||
3404 | switch (prot_group_type) { | |
3405 | case LPFC_PG_TYPE_NO_DIF: | |
96f7077f JS |
3406 | /* Here we need to add a DISEED to the count */ |
3407 | if ((lpfc_cmd->seg_cnt + 1) > phba->cfg_total_seg_cnt) | |
3408 | goto err; | |
3409 | ||
3410 | num_sge = lpfc_bg_setup_sgl(phba, scsi_cmnd, sgl, | |
acd6859b | 3411 | datasegcnt); |
96f7077f | 3412 | |
acd6859b | 3413 | /* we should have 2 or more entries in buffer list */ |
96f7077f | 3414 | if (num_sge < 2) |
acd6859b JS |
3415 | goto err; |
3416 | break; | |
96f7077f JS |
3417 | |
3418 | case LPFC_PG_TYPE_DIF_BUF: | |
acd6859b JS |
3419 | /* |
3420 | * This type indicates that protection buffers are | |
3421 | * passed to the driver, so that needs to be prepared | |
3422 | * for DMA | |
3423 | */ | |
3424 | protsegcnt = dma_map_sg(&phba->pcidev->dev, | |
3425 | scsi_prot_sglist(scsi_cmnd), | |
3426 | scsi_prot_sg_count(scsi_cmnd), datadir); | |
3427 | if (unlikely(!protsegcnt)) { | |
3428 | scsi_dma_unmap(scsi_cmnd); | |
3429 | return 1; | |
3430 | } | |
3431 | ||
3432 | lpfc_cmd->prot_seg_cnt = protsegcnt; | |
96f7077f JS |
3433 | /* |
3434 | * There is a minimun of 3 SGEs used for every | |
3435 | * protection data segment. | |
3436 | */ | |
3437 | if ((lpfc_cmd->prot_seg_cnt * 3) > | |
3438 | (phba->cfg_total_seg_cnt - 2)) | |
3439 | goto err; | |
acd6859b | 3440 | |
96f7077f | 3441 | num_sge = lpfc_bg_setup_sgl_prot(phba, scsi_cmnd, sgl, |
acd6859b | 3442 | datasegcnt, protsegcnt); |
96f7077f | 3443 | |
acd6859b | 3444 | /* we should have 3 or more entries in buffer list */ |
96f7077f JS |
3445 | if ((num_sge < 3) || |
3446 | (num_sge > phba->cfg_total_seg_cnt)) | |
acd6859b JS |
3447 | goto err; |
3448 | break; | |
96f7077f | 3449 | |
acd6859b JS |
3450 | case LPFC_PG_TYPE_INVALID: |
3451 | default: | |
96f7077f JS |
3452 | scsi_dma_unmap(scsi_cmnd); |
3453 | lpfc_cmd->seg_cnt = 0; | |
3454 | ||
acd6859b JS |
3455 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, |
3456 | "9083 Unexpected protection group %i\n", | |
3457 | prot_group_type); | |
3458 | return 1; | |
3459 | } | |
3460 | } | |
3461 | ||
8012cc38 JS |
3462 | switch (scsi_get_prot_op(scsi_cmnd)) { |
3463 | case SCSI_PROT_WRITE_STRIP: | |
3464 | case SCSI_PROT_READ_STRIP: | |
3465 | lpfc_cmd->cur_iocbq.iocb_flag |= LPFC_IO_DIF_STRIP; | |
3466 | break; | |
3467 | case SCSI_PROT_WRITE_INSERT: | |
3468 | case SCSI_PROT_READ_INSERT: | |
3469 | lpfc_cmd->cur_iocbq.iocb_flag |= LPFC_IO_DIF_INSERT; | |
3470 | break; | |
3471 | case SCSI_PROT_WRITE_PASS: | |
3472 | case SCSI_PROT_READ_PASS: | |
3473 | lpfc_cmd->cur_iocbq.iocb_flag |= LPFC_IO_DIF_PASS; | |
3474 | break; | |
3475 | } | |
3476 | ||
acd6859b | 3477 | fcpdl = lpfc_bg_scsi_adjust_dl(phba, lpfc_cmd); |
acd6859b JS |
3478 | fcp_cmnd->fcpDl = be32_to_cpu(fcpdl); |
3479 | ||
3480 | /* | |
3481 | * Due to difference in data length between DIF/non-DIF paths, | |
3482 | * we need to set word 4 of IOCB here | |
3483 | */ | |
3484 | iocb_cmd->un.fcpi.fcpi_parm = fcpdl; | |
acd6859b | 3485 | |
9bd2bff5 JS |
3486 | /* |
3487 | * If the OAS driver feature is enabled and the lun is enabled for | |
3488 | * OAS, set the oas iocb related flags. | |
3489 | */ | |
3490 | if ((phba->cfg_fof) && ((struct lpfc_device_data *) | |
3491 | scsi_cmnd->device->hostdata)->oas_enabled) | |
3492 | lpfc_cmd->cur_iocbq.iocb_flag |= (LPFC_IO_OAS | LPFC_IO_FOF); | |
3493 | ||
acd6859b JS |
3494 | return 0; |
3495 | err: | |
96f7077f JS |
3496 | if (lpfc_cmd->seg_cnt) |
3497 | scsi_dma_unmap(scsi_cmnd); | |
3498 | if (lpfc_cmd->prot_seg_cnt) | |
3499 | dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(scsi_cmnd), | |
3500 | scsi_prot_sg_count(scsi_cmnd), | |
3501 | scsi_cmnd->sc_data_direction); | |
3502 | ||
acd6859b | 3503 | lpfc_printf_log(phba, KERN_ERR, LOG_FCP, |
96f7077f JS |
3504 | "9084 Cannot setup S/G List for HBA" |
3505 | "IO segs %d/%d SGL %d SCSI %d: %d %d\n", | |
3506 | lpfc_cmd->seg_cnt, lpfc_cmd->prot_seg_cnt, | |
3507 | phba->cfg_total_seg_cnt, phba->cfg_sg_seg_cnt, | |
3508 | prot_group_type, num_sge); | |
3509 | ||
3510 | lpfc_cmd->seg_cnt = 0; | |
3511 | lpfc_cmd->prot_seg_cnt = 0; | |
acd6859b JS |
3512 | return 1; |
3513 | } | |
3514 | ||
3772a991 JS |
3515 | /** |
3516 | * lpfc_scsi_prep_dma_buf - Wrapper function for DMA mapping of scsi buffer | |
3517 | * @phba: The Hba for which this call is being executed. | |
3518 | * @lpfc_cmd: The scsi buffer which is going to be mapped. | |
3519 | * | |
3520 | * This routine wraps the actual DMA mapping function pointer from the | |
3521 | * lpfc_hba struct. | |
3522 | * | |
3523 | * Return codes: | |
6c8eea54 JS |
3524 | * 1 - Error |
3525 | * 0 - Success | |
3772a991 JS |
3526 | **/ |
3527 | static inline int | |
3528 | lpfc_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) | |
3529 | { | |
3530 | return phba->lpfc_scsi_prep_dma_buf(phba, lpfc_cmd); | |
3531 | } | |
3532 | ||
acd6859b JS |
3533 | /** |
3534 | * lpfc_bg_scsi_prep_dma_buf - Wrapper function for DMA mapping of scsi buffer | |
3535 | * using BlockGuard. | |
3536 | * @phba: The Hba for which this call is being executed. | |
3537 | * @lpfc_cmd: The scsi buffer which is going to be mapped. | |
3538 | * | |
3539 | * This routine wraps the actual DMA mapping function pointer from the | |
3540 | * lpfc_hba struct. | |
3541 | * | |
3542 | * Return codes: | |
3543 | * 1 - Error | |
3544 | * 0 - Success | |
3545 | **/ | |
3546 | static inline int | |
3547 | lpfc_bg_scsi_prep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *lpfc_cmd) | |
3548 | { | |
3549 | return phba->lpfc_bg_scsi_prep_dma_buf(phba, lpfc_cmd); | |
3550 | } | |
3551 | ||
ea2151b4 | 3552 | /** |
3621a710 | 3553 | * lpfc_send_scsi_error_event - Posts an event when there is SCSI error |
ea2151b4 JS |
3554 | * @phba: Pointer to hba context object. |
3555 | * @vport: Pointer to vport object. | |
3556 | * @lpfc_cmd: Pointer to lpfc scsi command which reported the error. | |
3557 | * @rsp_iocb: Pointer to response iocb object which reported error. | |
3558 | * | |
3559 | * This function posts an event when there is a SCSI command reporting | |
3560 | * error from the scsi device. | |
3561 | **/ | |
3562 | static void | |
3563 | lpfc_send_scsi_error_event(struct lpfc_hba *phba, struct lpfc_vport *vport, | |
3564 | struct lpfc_scsi_buf *lpfc_cmd, struct lpfc_iocbq *rsp_iocb) { | |
3565 | struct scsi_cmnd *cmnd = lpfc_cmd->pCmd; | |
3566 | struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp; | |
3567 | uint32_t resp_info = fcprsp->rspStatus2; | |
3568 | uint32_t scsi_status = fcprsp->rspStatus3; | |
3569 | uint32_t fcpi_parm = rsp_iocb->iocb.un.fcpi.fcpi_parm; | |
3570 | struct lpfc_fast_path_event *fast_path_evt = NULL; | |
3571 | struct lpfc_nodelist *pnode = lpfc_cmd->rdata->pnode; | |
3572 | unsigned long flags; | |
3573 | ||
5989b8d4 JS |
3574 | if (!pnode || !NLP_CHK_NODE_ACT(pnode)) |
3575 | return; | |
3576 | ||
ea2151b4 JS |
3577 | /* If there is queuefull or busy condition send a scsi event */ |
3578 | if ((cmnd->result == SAM_STAT_TASK_SET_FULL) || | |
3579 | (cmnd->result == SAM_STAT_BUSY)) { | |
3580 | fast_path_evt = lpfc_alloc_fast_evt(phba); | |
3581 | if (!fast_path_evt) | |
3582 | return; | |
3583 | fast_path_evt->un.scsi_evt.event_type = | |
3584 | FC_REG_SCSI_EVENT; | |
3585 | fast_path_evt->un.scsi_evt.subcategory = | |
3586 | (cmnd->result == SAM_STAT_TASK_SET_FULL) ? | |
3587 | LPFC_EVENT_QFULL : LPFC_EVENT_DEVBSY; | |
3588 | fast_path_evt->un.scsi_evt.lun = cmnd->device->lun; | |
3589 | memcpy(&fast_path_evt->un.scsi_evt.wwpn, | |
3590 | &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
3591 | memcpy(&fast_path_evt->un.scsi_evt.wwnn, | |
3592 | &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
3593 | } else if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen && | |
3594 | ((cmnd->cmnd[0] == READ_10) || (cmnd->cmnd[0] == WRITE_10))) { | |
3595 | fast_path_evt = lpfc_alloc_fast_evt(phba); | |
3596 | if (!fast_path_evt) | |
3597 | return; | |
3598 | fast_path_evt->un.check_cond_evt.scsi_event.event_type = | |
3599 | FC_REG_SCSI_EVENT; | |
3600 | fast_path_evt->un.check_cond_evt.scsi_event.subcategory = | |
3601 | LPFC_EVENT_CHECK_COND; | |
3602 | fast_path_evt->un.check_cond_evt.scsi_event.lun = | |
3603 | cmnd->device->lun; | |
3604 | memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwpn, | |
3605 | &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
3606 | memcpy(&fast_path_evt->un.check_cond_evt.scsi_event.wwnn, | |
3607 | &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
3608 | fast_path_evt->un.check_cond_evt.sense_key = | |
3609 | cmnd->sense_buffer[2] & 0xf; | |
3610 | fast_path_evt->un.check_cond_evt.asc = cmnd->sense_buffer[12]; | |
3611 | fast_path_evt->un.check_cond_evt.ascq = cmnd->sense_buffer[13]; | |
3612 | } else if ((cmnd->sc_data_direction == DMA_FROM_DEVICE) && | |
3613 | fcpi_parm && | |
3614 | ((be32_to_cpu(fcprsp->rspResId) != fcpi_parm) || | |
3615 | ((scsi_status == SAM_STAT_GOOD) && | |
3616 | !(resp_info & (RESID_UNDER | RESID_OVER))))) { | |
3617 | /* | |
3618 | * If status is good or resid does not match with fcp_param and | |
3619 | * there is valid fcpi_parm, then there is a read_check error | |
3620 | */ | |
3621 | fast_path_evt = lpfc_alloc_fast_evt(phba); | |
3622 | if (!fast_path_evt) | |
3623 | return; | |
3624 | fast_path_evt->un.read_check_error.header.event_type = | |
3625 | FC_REG_FABRIC_EVENT; | |
3626 | fast_path_evt->un.read_check_error.header.subcategory = | |
3627 | LPFC_EVENT_FCPRDCHKERR; | |
3628 | memcpy(&fast_path_evt->un.read_check_error.header.wwpn, | |
3629 | &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
3630 | memcpy(&fast_path_evt->un.read_check_error.header.wwnn, | |
3631 | &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
3632 | fast_path_evt->un.read_check_error.lun = cmnd->device->lun; | |
3633 | fast_path_evt->un.read_check_error.opcode = cmnd->cmnd[0]; | |
3634 | fast_path_evt->un.read_check_error.fcpiparam = | |
3635 | fcpi_parm; | |
3636 | } else | |
3637 | return; | |
3638 | ||
3639 | fast_path_evt->vport = vport; | |
3640 | spin_lock_irqsave(&phba->hbalock, flags); | |
3641 | list_add_tail(&fast_path_evt->work_evt.evt_listp, &phba->work_list); | |
3642 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
3643 | lpfc_worker_wake_up(phba); | |
3644 | return; | |
3645 | } | |
9bad7671 JS |
3646 | |
3647 | /** | |
f1126688 | 3648 | * lpfc_scsi_unprep_dma_buf - Un-map DMA mapping of SG-list for dev |
3772a991 | 3649 | * @phba: The HBA for which this call is being executed. |
9bad7671 JS |
3650 | * @psb: The scsi buffer which is going to be un-mapped. |
3651 | * | |
3652 | * This routine does DMA un-mapping of scatter gather list of scsi command | |
3772a991 | 3653 | * field of @lpfc_cmd for device with SLI-3 interface spec. |
9bad7671 | 3654 | **/ |
bcf4dbfa | 3655 | static void |
f1126688 | 3656 | lpfc_scsi_unprep_dma_buf(struct lpfc_hba *phba, struct lpfc_scsi_buf *psb) |
bcf4dbfa JS |
3657 | { |
3658 | /* | |
3659 | * There are only two special cases to consider. (1) the scsi command | |
3660 | * requested scatter-gather usage or (2) the scsi command allocated | |
3661 | * a request buffer, but did not request use_sg. There is a third | |
3662 | * case, but it does not require resource deallocation. | |
3663 | */ | |
a0b4f78f FT |
3664 | if (psb->seg_cnt > 0) |
3665 | scsi_dma_unmap(psb->pCmd); | |
e2a0a9d6 JS |
3666 | if (psb->prot_seg_cnt > 0) |
3667 | dma_unmap_sg(&phba->pcidev->dev, scsi_prot_sglist(psb->pCmd), | |
3668 | scsi_prot_sg_count(psb->pCmd), | |
3669 | psb->pCmd->sc_data_direction); | |
bcf4dbfa JS |
3670 | } |
3671 | ||
9bad7671 | 3672 | /** |
3621a710 | 3673 | * lpfc_handler_fcp_err - FCP response handler |
9bad7671 JS |
3674 | * @vport: The virtual port for which this call is being executed. |
3675 | * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure. | |
3676 | * @rsp_iocb: The response IOCB which contains FCP error. | |
3677 | * | |
3678 | * This routine is called to process response IOCB with status field | |
3679 | * IOSTAT_FCP_RSP_ERROR. This routine sets result field of scsi command | |
3680 | * based upon SCSI and FCP error. | |
3681 | **/ | |
dea3101e | 3682 | static void |
2e0fef85 JS |
3683 | lpfc_handle_fcp_err(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, |
3684 | struct lpfc_iocbq *rsp_iocb) | |
dea3101e | 3685 | { |
3686 | struct scsi_cmnd *cmnd = lpfc_cmd->pCmd; | |
3687 | struct fcp_cmnd *fcpcmd = lpfc_cmd->fcp_cmnd; | |
3688 | struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp; | |
7054a606 | 3689 | uint32_t fcpi_parm = rsp_iocb->iocb.un.fcpi.fcpi_parm; |
dea3101e | 3690 | uint32_t resp_info = fcprsp->rspStatus2; |
3691 | uint32_t scsi_status = fcprsp->rspStatus3; | |
c7743956 | 3692 | uint32_t *lp; |
dea3101e | 3693 | uint32_t host_status = DID_OK; |
3694 | uint32_t rsplen = 0; | |
c7743956 | 3695 | uint32_t logit = LOG_FCP | LOG_FCP_ERROR; |
dea3101e | 3696 | |
ea2151b4 | 3697 | |
dea3101e | 3698 | /* |
3699 | * If this is a task management command, there is no | |
3700 | * scsi packet associated with this lpfc_cmd. The driver | |
3701 | * consumes it. | |
3702 | */ | |
3703 | if (fcpcmd->fcpCntl2) { | |
3704 | scsi_status = 0; | |
3705 | goto out; | |
3706 | } | |
3707 | ||
6a9c52cf JS |
3708 | if (resp_info & RSP_LEN_VALID) { |
3709 | rsplen = be32_to_cpu(fcprsp->rspRspLen); | |
e40a02c1 | 3710 | if (rsplen != 0 && rsplen != 4 && rsplen != 8) { |
6a9c52cf JS |
3711 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
3712 | "2719 Invalid response length: " | |
9cb78c16 | 3713 | "tgt x%x lun x%llx cmnd x%x rsplen x%x\n", |
6a9c52cf JS |
3714 | cmnd->device->id, |
3715 | cmnd->device->lun, cmnd->cmnd[0], | |
3716 | rsplen); | |
3717 | host_status = DID_ERROR; | |
3718 | goto out; | |
3719 | } | |
e40a02c1 JS |
3720 | if (fcprsp->rspInfo3 != RSP_NO_FAILURE) { |
3721 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
3722 | "2757 Protocol failure detected during " | |
3723 | "processing of FCP I/O op: " | |
9cb78c16 | 3724 | "tgt x%x lun x%llx cmnd x%x rspInfo3 x%x\n", |
e40a02c1 JS |
3725 | cmnd->device->id, |
3726 | cmnd->device->lun, cmnd->cmnd[0], | |
3727 | fcprsp->rspInfo3); | |
3728 | host_status = DID_ERROR; | |
3729 | goto out; | |
3730 | } | |
6a9c52cf JS |
3731 | } |
3732 | ||
c7743956 JS |
3733 | if ((resp_info & SNS_LEN_VALID) && fcprsp->rspSnsLen) { |
3734 | uint32_t snslen = be32_to_cpu(fcprsp->rspSnsLen); | |
3735 | if (snslen > SCSI_SENSE_BUFFERSIZE) | |
3736 | snslen = SCSI_SENSE_BUFFERSIZE; | |
3737 | ||
3738 | if (resp_info & RSP_LEN_VALID) | |
3739 | rsplen = be32_to_cpu(fcprsp->rspRspLen); | |
3740 | memcpy(cmnd->sense_buffer, &fcprsp->rspInfo0 + rsplen, snslen); | |
3741 | } | |
3742 | lp = (uint32_t *)cmnd->sense_buffer; | |
3743 | ||
aa1c7ee7 JS |
3744 | /* special handling for under run conditions */ |
3745 | if (!scsi_status && (resp_info & RESID_UNDER)) { | |
3746 | /* don't log under runs if fcp set... */ | |
3747 | if (vport->cfg_log_verbose & LOG_FCP) | |
3748 | logit = LOG_FCP_ERROR; | |
3749 | /* unless operator says so */ | |
3750 | if (vport->cfg_log_verbose & LOG_FCP_UNDER) | |
3751 | logit = LOG_FCP_UNDER; | |
3752 | } | |
c7743956 | 3753 | |
e8b62011 | 3754 | lpfc_printf_vlog(vport, KERN_WARNING, logit, |
e2a0a9d6 | 3755 | "9024 FCP command x%x failed: x%x SNS x%x x%x " |
e8b62011 JS |
3756 | "Data: x%x x%x x%x x%x x%x\n", |
3757 | cmnd->cmnd[0], scsi_status, | |
3758 | be32_to_cpu(*lp), be32_to_cpu(*(lp + 3)), resp_info, | |
3759 | be32_to_cpu(fcprsp->rspResId), | |
3760 | be32_to_cpu(fcprsp->rspSnsLen), | |
3761 | be32_to_cpu(fcprsp->rspRspLen), | |
3762 | fcprsp->rspInfo3); | |
dea3101e | 3763 | |
a0b4f78f | 3764 | scsi_set_resid(cmnd, 0); |
dea3101e | 3765 | if (resp_info & RESID_UNDER) { |
a0b4f78f | 3766 | scsi_set_resid(cmnd, be32_to_cpu(fcprsp->rspResId)); |
dea3101e | 3767 | |
73d91e50 | 3768 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP_UNDER, |
e2a0a9d6 | 3769 | "9025 FCP Read Underrun, expected %d, " |
e8b62011 JS |
3770 | "residual %d Data: x%x x%x x%x\n", |
3771 | be32_to_cpu(fcpcmd->fcpDl), | |
3772 | scsi_get_resid(cmnd), fcpi_parm, cmnd->cmnd[0], | |
3773 | cmnd->underflow); | |
dea3101e | 3774 | |
7054a606 JS |
3775 | /* |
3776 | * If there is an under run check if under run reported by | |
3777 | * storage array is same as the under run reported by HBA. | |
3778 | * If this is not same, there is a dropped frame. | |
3779 | */ | |
3780 | if ((cmnd->sc_data_direction == DMA_FROM_DEVICE) && | |
3781 | fcpi_parm && | |
a0b4f78f | 3782 | (scsi_get_resid(cmnd) != fcpi_parm)) { |
e8b62011 JS |
3783 | lpfc_printf_vlog(vport, KERN_WARNING, |
3784 | LOG_FCP | LOG_FCP_ERROR, | |
e2a0a9d6 | 3785 | "9026 FCP Read Check Error " |
e8b62011 JS |
3786 | "and Underrun Data: x%x x%x x%x x%x\n", |
3787 | be32_to_cpu(fcpcmd->fcpDl), | |
3788 | scsi_get_resid(cmnd), fcpi_parm, | |
3789 | cmnd->cmnd[0]); | |
a0b4f78f | 3790 | scsi_set_resid(cmnd, scsi_bufflen(cmnd)); |
7054a606 JS |
3791 | host_status = DID_ERROR; |
3792 | } | |
dea3101e | 3793 | /* |
3794 | * The cmnd->underflow is the minimum number of bytes that must | |
25985edc | 3795 | * be transferred for this command. Provided a sense condition |
dea3101e | 3796 | * is not present, make sure the actual amount transferred is at |
3797 | * least the underflow value or fail. | |
3798 | */ | |
3799 | if (!(resp_info & SNS_LEN_VALID) && | |
3800 | (scsi_status == SAM_STAT_GOOD) && | |
a0b4f78f FT |
3801 | (scsi_bufflen(cmnd) - scsi_get_resid(cmnd) |
3802 | < cmnd->underflow)) { | |
e8b62011 | 3803 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
e2a0a9d6 | 3804 | "9027 FCP command x%x residual " |
e8b62011 JS |
3805 | "underrun converted to error " |
3806 | "Data: x%x x%x x%x\n", | |
66dbfbe6 | 3807 | cmnd->cmnd[0], scsi_bufflen(cmnd), |
e8b62011 | 3808 | scsi_get_resid(cmnd), cmnd->underflow); |
dea3101e | 3809 | host_status = DID_ERROR; |
3810 | } | |
3811 | } else if (resp_info & RESID_OVER) { | |
e8b62011 | 3812 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
e2a0a9d6 | 3813 | "9028 FCP command x%x residual overrun error. " |
e4e74273 | 3814 | "Data: x%x x%x\n", cmnd->cmnd[0], |
e8b62011 | 3815 | scsi_bufflen(cmnd), scsi_get_resid(cmnd)); |
dea3101e | 3816 | host_status = DID_ERROR; |
3817 | ||
3818 | /* | |
3819 | * Check SLI validation that all the transfer was actually done | |
26373d23 | 3820 | * (fcpi_parm should be zero). Apply check only to reads. |
dea3101e | 3821 | */ |
26373d23 | 3822 | } else if (fcpi_parm && (cmnd->sc_data_direction == DMA_FROM_DEVICE)) { |
e8b62011 | 3823 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP | LOG_FCP_ERROR, |
26373d23 | 3824 | "9029 FCP Read Check Error Data: " |
eee8877e | 3825 | "x%x x%x x%x x%x x%x\n", |
e8b62011 JS |
3826 | be32_to_cpu(fcpcmd->fcpDl), |
3827 | be32_to_cpu(fcprsp->rspResId), | |
eee8877e JS |
3828 | fcpi_parm, cmnd->cmnd[0], scsi_status); |
3829 | switch (scsi_status) { | |
3830 | case SAM_STAT_GOOD: | |
3831 | case SAM_STAT_CHECK_CONDITION: | |
3832 | /* Fabric dropped a data frame. Fail any successful | |
3833 | * command in which we detected dropped frames. | |
3834 | * A status of good or some check conditions could | |
3835 | * be considered a successful command. | |
3836 | */ | |
3837 | host_status = DID_ERROR; | |
3838 | break; | |
3839 | } | |
a0b4f78f | 3840 | scsi_set_resid(cmnd, scsi_bufflen(cmnd)); |
dea3101e | 3841 | } |
3842 | ||
3843 | out: | |
3844 | cmnd->result = ScsiResult(host_status, scsi_status); | |
ea2151b4 | 3845 | lpfc_send_scsi_error_event(vport->phba, vport, lpfc_cmd, rsp_iocb); |
dea3101e | 3846 | } |
3847 | ||
9bad7671 | 3848 | /** |
3621a710 | 3849 | * lpfc_scsi_cmd_iocb_cmpl - Scsi cmnd IOCB completion routine |
9bad7671 JS |
3850 | * @phba: The Hba for which this call is being executed. |
3851 | * @pIocbIn: The command IOCBQ for the scsi cmnd. | |
3772a991 | 3852 | * @pIocbOut: The response IOCBQ for the scsi cmnd. |
9bad7671 JS |
3853 | * |
3854 | * This routine assigns scsi command result by looking into response IOCB | |
3855 | * status field appropriately. This routine handles QUEUE FULL condition as | |
3856 | * well by ramping down device queue depth. | |
3857 | **/ | |
dea3101e | 3858 | static void |
3859 | lpfc_scsi_cmd_iocb_cmpl(struct lpfc_hba *phba, struct lpfc_iocbq *pIocbIn, | |
3860 | struct lpfc_iocbq *pIocbOut) | |
3861 | { | |
3862 | struct lpfc_scsi_buf *lpfc_cmd = | |
3863 | (struct lpfc_scsi_buf *) pIocbIn->context1; | |
2e0fef85 | 3864 | struct lpfc_vport *vport = pIocbIn->vport; |
dea3101e | 3865 | struct lpfc_rport_data *rdata = lpfc_cmd->rdata; |
3866 | struct lpfc_nodelist *pnode = rdata->pnode; | |
75baf696 | 3867 | struct scsi_cmnd *cmd; |
445cf4f4 | 3868 | int result; |
5ffc266e | 3869 | int depth; |
fa61a54e | 3870 | unsigned long flags; |
ea2151b4 | 3871 | struct lpfc_fast_path_event *fast_path_evt; |
75baf696 | 3872 | struct Scsi_Host *shost; |
a257bf90 | 3873 | uint32_t queue_depth, scsi_id; |
73d91e50 | 3874 | uint32_t logit = LOG_FCP; |
dea3101e | 3875 | |
75baf696 JS |
3876 | /* Sanity check on return of outstanding command */ |
3877 | if (!(lpfc_cmd->pCmd)) | |
3878 | return; | |
3879 | cmd = lpfc_cmd->pCmd; | |
3880 | shost = cmd->device->host; | |
3881 | ||
e3d2b802 | 3882 | lpfc_cmd->result = (pIocbOut->iocb.un.ulpWord[4] & IOERR_PARAM_MASK); |
dea3101e | 3883 | lpfc_cmd->status = pIocbOut->iocb.ulpStatus; |
341af102 JS |
3884 | /* pick up SLI4 exhange busy status from HBA */ |
3885 | lpfc_cmd->exch_busy = pIocbOut->iocb_flag & LPFC_EXCHANGE_BUSY; | |
3886 | ||
9a6b09c0 JS |
3887 | #ifdef CONFIG_SCSI_LPFC_DEBUG_FS |
3888 | if (lpfc_cmd->prot_data_type) { | |
3889 | struct scsi_dif_tuple *src = NULL; | |
3890 | ||
3891 | src = (struct scsi_dif_tuple *)lpfc_cmd->prot_data_segment; | |
3892 | /* | |
3893 | * Used to restore any changes to protection | |
3894 | * data for error injection. | |
3895 | */ | |
3896 | switch (lpfc_cmd->prot_data_type) { | |
3897 | case LPFC_INJERR_REFTAG: | |
3898 | src->ref_tag = | |
3899 | lpfc_cmd->prot_data; | |
3900 | break; | |
3901 | case LPFC_INJERR_APPTAG: | |
3902 | src->app_tag = | |
3903 | (uint16_t)lpfc_cmd->prot_data; | |
3904 | break; | |
3905 | case LPFC_INJERR_GUARD: | |
3906 | src->guard_tag = | |
3907 | (uint16_t)lpfc_cmd->prot_data; | |
3908 | break; | |
3909 | default: | |
3910 | break; | |
3911 | } | |
3912 | ||
3913 | lpfc_cmd->prot_data = 0; | |
3914 | lpfc_cmd->prot_data_type = 0; | |
3915 | lpfc_cmd->prot_data_segment = NULL; | |
3916 | } | |
3917 | #endif | |
109f6ed0 JS |
3918 | if (pnode && NLP_CHK_NODE_ACT(pnode)) |
3919 | atomic_dec(&pnode->cmd_pending); | |
dea3101e | 3920 | |
3921 | if (lpfc_cmd->status) { | |
3922 | if (lpfc_cmd->status == IOSTAT_LOCAL_REJECT && | |
3923 | (lpfc_cmd->result & IOERR_DRVR_MASK)) | |
3924 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; | |
3925 | else if (lpfc_cmd->status >= IOSTAT_CNT) | |
3926 | lpfc_cmd->status = IOSTAT_DEFAULT; | |
aa1c7ee7 JS |
3927 | if (lpfc_cmd->status == IOSTAT_FCP_RSP_ERROR && |
3928 | !lpfc_cmd->fcp_rsp->rspStatus3 && | |
3929 | (lpfc_cmd->fcp_rsp->rspStatus2 & RESID_UNDER) && | |
3930 | !(vport->cfg_log_verbose & LOG_FCP_UNDER)) | |
73d91e50 JS |
3931 | logit = 0; |
3932 | else | |
3933 | logit = LOG_FCP | LOG_FCP_UNDER; | |
3934 | lpfc_printf_vlog(vport, KERN_WARNING, logit, | |
9cb78c16 | 3935 | "9030 FCP cmd x%x failed <%d/%lld> " |
5a0d80fc JS |
3936 | "status: x%x result: x%x " |
3937 | "sid: x%x did: x%x oxid: x%x " | |
3938 | "Data: x%x x%x\n", | |
73d91e50 JS |
3939 | cmd->cmnd[0], |
3940 | cmd->device ? cmd->device->id : 0xffff, | |
3941 | cmd->device ? cmd->device->lun : 0xffff, | |
3942 | lpfc_cmd->status, lpfc_cmd->result, | |
3bf41ba9 JS |
3943 | vport->fc_myDID, |
3944 | (pnode) ? pnode->nlp_DID : 0, | |
5a0d80fc JS |
3945 | phba->sli_rev == LPFC_SLI_REV4 ? |
3946 | lpfc_cmd->cur_iocbq.sli4_xritag : 0xffff, | |
73d91e50 JS |
3947 | pIocbOut->iocb.ulpContext, |
3948 | lpfc_cmd->cur_iocbq.iocb.ulpIoTag); | |
dea3101e | 3949 | |
3950 | switch (lpfc_cmd->status) { | |
3951 | case IOSTAT_FCP_RSP_ERROR: | |
3952 | /* Call FCP RSP handler to determine result */ | |
2e0fef85 | 3953 | lpfc_handle_fcp_err(vport, lpfc_cmd, pIocbOut); |
dea3101e | 3954 | break; |
3955 | case IOSTAT_NPORT_BSY: | |
3956 | case IOSTAT_FABRIC_BSY: | |
0f1f53a7 | 3957 | cmd->result = ScsiResult(DID_TRANSPORT_DISRUPTED, 0); |
ea2151b4 JS |
3958 | fast_path_evt = lpfc_alloc_fast_evt(phba); |
3959 | if (!fast_path_evt) | |
3960 | break; | |
3961 | fast_path_evt->un.fabric_evt.event_type = | |
3962 | FC_REG_FABRIC_EVENT; | |
3963 | fast_path_evt->un.fabric_evt.subcategory = | |
3964 | (lpfc_cmd->status == IOSTAT_NPORT_BSY) ? | |
3965 | LPFC_EVENT_PORT_BUSY : LPFC_EVENT_FABRIC_BUSY; | |
3966 | if (pnode && NLP_CHK_NODE_ACT(pnode)) { | |
3967 | memcpy(&fast_path_evt->un.fabric_evt.wwpn, | |
3968 | &pnode->nlp_portname, | |
3969 | sizeof(struct lpfc_name)); | |
3970 | memcpy(&fast_path_evt->un.fabric_evt.wwnn, | |
3971 | &pnode->nlp_nodename, | |
3972 | sizeof(struct lpfc_name)); | |
3973 | } | |
3974 | fast_path_evt->vport = vport; | |
3975 | fast_path_evt->work_evt.evt = | |
3976 | LPFC_EVT_FASTPATH_MGMT_EVT; | |
3977 | spin_lock_irqsave(&phba->hbalock, flags); | |
3978 | list_add_tail(&fast_path_evt->work_evt.evt_listp, | |
3979 | &phba->work_list); | |
3980 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
3981 | lpfc_worker_wake_up(phba); | |
dea3101e | 3982 | break; |
92d7f7b0 | 3983 | case IOSTAT_LOCAL_REJECT: |
1151e3ec | 3984 | case IOSTAT_REMOTE_STOP: |
ab56dc2e JS |
3985 | if (lpfc_cmd->result == IOERR_ELXSEC_KEY_UNWRAP_ERROR || |
3986 | lpfc_cmd->result == | |
3987 | IOERR_ELXSEC_KEY_UNWRAP_COMPARE_ERROR || | |
3988 | lpfc_cmd->result == IOERR_ELXSEC_CRYPTO_ERROR || | |
3989 | lpfc_cmd->result == | |
3990 | IOERR_ELXSEC_CRYPTO_COMPARE_ERROR) { | |
3991 | cmd->result = ScsiResult(DID_NO_CONNECT, 0); | |
3992 | break; | |
3993 | } | |
d7c255b2 | 3994 | if (lpfc_cmd->result == IOERR_INVALID_RPI || |
92d7f7b0 | 3995 | lpfc_cmd->result == IOERR_NO_RESOURCES || |
b92938b4 JS |
3996 | lpfc_cmd->result == IOERR_ABORT_REQUESTED || |
3997 | lpfc_cmd->result == IOERR_SLER_CMD_RCV_FAILURE) { | |
92d7f7b0 | 3998 | cmd->result = ScsiResult(DID_REQUEUE, 0); |
58da1ffb | 3999 | break; |
e2a0a9d6 | 4000 | } |
e2a0a9d6 JS |
4001 | if ((lpfc_cmd->result == IOERR_RX_DMA_FAILED || |
4002 | lpfc_cmd->result == IOERR_TX_DMA_FAILED) && | |
4003 | pIocbOut->iocb.unsli3.sli3_bg.bgstat) { | |
4004 | if (scsi_get_prot_op(cmd) != SCSI_PROT_NORMAL) { | |
4005 | /* | |
4006 | * This is a response for a BG enabled | |
4007 | * cmd. Parse BG error | |
4008 | */ | |
4009 | lpfc_parse_bg_err(phba, lpfc_cmd, | |
4010 | pIocbOut); | |
4011 | break; | |
4012 | } else { | |
4013 | lpfc_printf_vlog(vport, KERN_WARNING, | |
4014 | LOG_BG, | |
4015 | "9031 non-zero BGSTAT " | |
6a9c52cf | 4016 | "on unprotected cmd\n"); |
e2a0a9d6 JS |
4017 | } |
4018 | } | |
1151e3ec JS |
4019 | if ((lpfc_cmd->status == IOSTAT_REMOTE_STOP) |
4020 | && (phba->sli_rev == LPFC_SLI_REV4) | |
4021 | && (pnode && NLP_CHK_NODE_ACT(pnode))) { | |
4022 | /* This IO was aborted by the target, we don't | |
4023 | * know the rxid and because we did not send the | |
4024 | * ABTS we cannot generate and RRQ. | |
4025 | */ | |
4026 | lpfc_set_rrq_active(phba, pnode, | |
ee0f4fe1 JS |
4027 | lpfc_cmd->cur_iocbq.sli4_lxritag, |
4028 | 0, 0); | |
1151e3ec | 4029 | } |
e2a0a9d6 | 4030 | /* else: fall through */ |
dea3101e | 4031 | default: |
4032 | cmd->result = ScsiResult(DID_ERROR, 0); | |
4033 | break; | |
4034 | } | |
4035 | ||
58da1ffb | 4036 | if (!pnode || !NLP_CHK_NODE_ACT(pnode) |
19a7b4ae | 4037 | || (pnode->nlp_state != NLP_STE_MAPPED_NODE)) |
0f1f53a7 JS |
4038 | cmd->result = ScsiResult(DID_TRANSPORT_DISRUPTED, |
4039 | SAM_STAT_BUSY); | |
ab56dc2e | 4040 | } else |
dea3101e | 4041 | cmd->result = ScsiResult(DID_OK, 0); |
dea3101e | 4042 | |
4043 | if (cmd->result || lpfc_cmd->fcp_rsp->rspSnsLen) { | |
4044 | uint32_t *lp = (uint32_t *)cmd->sense_buffer; | |
4045 | ||
e8b62011 | 4046 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
9cb78c16 | 4047 | "0710 Iodone <%d/%llu> cmd %p, error " |
e8b62011 JS |
4048 | "x%x SNS x%x x%x Data: x%x x%x\n", |
4049 | cmd->device->id, cmd->device->lun, cmd, | |
4050 | cmd->result, *lp, *(lp + 3), cmd->retries, | |
4051 | scsi_get_resid(cmd)); | |
dea3101e | 4052 | } |
4053 | ||
ea2151b4 | 4054 | lpfc_update_stats(phba, lpfc_cmd); |
445cf4f4 | 4055 | result = cmd->result; |
977b5a0a JS |
4056 | if (vport->cfg_max_scsicmpl_time && |
4057 | time_after(jiffies, lpfc_cmd->start_time + | |
4058 | msecs_to_jiffies(vport->cfg_max_scsicmpl_time))) { | |
a257bf90 | 4059 | spin_lock_irqsave(shost->host_lock, flags); |
109f6ed0 JS |
4060 | if (pnode && NLP_CHK_NODE_ACT(pnode)) { |
4061 | if (pnode->cmd_qdepth > | |
4062 | atomic_read(&pnode->cmd_pending) && | |
4063 | (atomic_read(&pnode->cmd_pending) > | |
4064 | LPFC_MIN_TGT_QDEPTH) && | |
4065 | ((cmd->cmnd[0] == READ_10) || | |
4066 | (cmd->cmnd[0] == WRITE_10))) | |
4067 | pnode->cmd_qdepth = | |
4068 | atomic_read(&pnode->cmd_pending); | |
4069 | ||
4070 | pnode->last_change_time = jiffies; | |
4071 | } | |
a257bf90 | 4072 | spin_unlock_irqrestore(shost->host_lock, flags); |
109f6ed0 | 4073 | } else if (pnode && NLP_CHK_NODE_ACT(pnode)) { |
7dc517df | 4074 | if ((pnode->cmd_qdepth < vport->cfg_tgt_queue_depth) && |
977b5a0a | 4075 | time_after(jiffies, pnode->last_change_time + |
109f6ed0 | 4076 | msecs_to_jiffies(LPFC_TGTQ_INTERVAL))) { |
a257bf90 | 4077 | spin_lock_irqsave(shost->host_lock, flags); |
7dc517df JS |
4078 | depth = pnode->cmd_qdepth * LPFC_TGTQ_RAMPUP_PCENT |
4079 | / 100; | |
4080 | depth = depth ? depth : 1; | |
4081 | pnode->cmd_qdepth += depth; | |
4082 | if (pnode->cmd_qdepth > vport->cfg_tgt_queue_depth) | |
4083 | pnode->cmd_qdepth = vport->cfg_tgt_queue_depth; | |
109f6ed0 | 4084 | pnode->last_change_time = jiffies; |
a257bf90 | 4085 | spin_unlock_irqrestore(shost->host_lock, flags); |
109f6ed0 | 4086 | } |
977b5a0a JS |
4087 | } |
4088 | ||
1dcb58e5 | 4089 | lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd); |
a257bf90 JS |
4090 | |
4091 | /* The sdev is not guaranteed to be valid post scsi_done upcall. */ | |
4092 | queue_depth = cmd->device->queue_depth; | |
4093 | scsi_id = cmd->device->id; | |
0bd4ca25 JSEC |
4094 | cmd->scsi_done(cmd); |
4095 | ||
b808608b | 4096 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { |
876dd7d0 | 4097 | spin_lock_irqsave(&phba->hbalock, flags); |
92e3af66 | 4098 | lpfc_cmd->pCmd = NULL; |
876dd7d0 | 4099 | spin_unlock_irqrestore(&phba->hbalock, flags); |
92e3af66 | 4100 | |
fa61a54e JS |
4101 | /* |
4102 | * If there is a thread waiting for command completion | |
4103 | * wake up the thread. | |
4104 | */ | |
a257bf90 | 4105 | spin_lock_irqsave(shost->host_lock, flags); |
fa61a54e JS |
4106 | if (lpfc_cmd->waitq) |
4107 | wake_up(lpfc_cmd->waitq); | |
a257bf90 | 4108 | spin_unlock_irqrestore(shost->host_lock, flags); |
b808608b JW |
4109 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
4110 | return; | |
4111 | } | |
4112 | ||
876dd7d0 | 4113 | spin_lock_irqsave(&phba->hbalock, flags); |
92e3af66 | 4114 | lpfc_cmd->pCmd = NULL; |
876dd7d0 | 4115 | spin_unlock_irqrestore(&phba->hbalock, flags); |
92e3af66 | 4116 | |
fa61a54e JS |
4117 | /* |
4118 | * If there is a thread waiting for command completion | |
4119 | * wake up the thread. | |
4120 | */ | |
a257bf90 | 4121 | spin_lock_irqsave(shost->host_lock, flags); |
fa61a54e JS |
4122 | if (lpfc_cmd->waitq) |
4123 | wake_up(lpfc_cmd->waitq); | |
a257bf90 | 4124 | spin_unlock_irqrestore(shost->host_lock, flags); |
fa61a54e | 4125 | |
0bd4ca25 | 4126 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
dea3101e | 4127 | } |
4128 | ||
34b02dcd | 4129 | /** |
3621a710 | 4130 | * lpfc_fcpcmd_to_iocb - copy the fcp_cmd data into the IOCB |
34b02dcd JS |
4131 | * @data: A pointer to the immediate command data portion of the IOCB. |
4132 | * @fcp_cmnd: The FCP Command that is provided by the SCSI layer. | |
4133 | * | |
4134 | * The routine copies the entire FCP command from @fcp_cmnd to @data while | |
4135 | * byte swapping the data to big endian format for transmission on the wire. | |
4136 | **/ | |
4137 | static void | |
4138 | lpfc_fcpcmd_to_iocb(uint8_t *data, struct fcp_cmnd *fcp_cmnd) | |
4139 | { | |
4140 | int i, j; | |
4141 | for (i = 0, j = 0; i < sizeof(struct fcp_cmnd); | |
4142 | i += sizeof(uint32_t), j++) { | |
4143 | ((uint32_t *)data)[j] = cpu_to_be32(((uint32_t *)fcp_cmnd)[j]); | |
4144 | } | |
4145 | } | |
4146 | ||
9bad7671 | 4147 | /** |
f1126688 | 4148 | * lpfc_scsi_prep_cmnd - Wrapper func for convert scsi cmnd to FCP info unit |
9bad7671 JS |
4149 | * @vport: The virtual port for which this call is being executed. |
4150 | * @lpfc_cmd: The scsi command which needs to send. | |
4151 | * @pnode: Pointer to lpfc_nodelist. | |
4152 | * | |
4153 | * This routine initializes fcp_cmnd and iocb data structure from scsi command | |
3772a991 | 4154 | * to transfer for device with SLI3 interface spec. |
9bad7671 | 4155 | **/ |
dea3101e | 4156 | static void |
f1126688 | 4157 | lpfc_scsi_prep_cmnd(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd, |
2e0fef85 | 4158 | struct lpfc_nodelist *pnode) |
dea3101e | 4159 | { |
2e0fef85 | 4160 | struct lpfc_hba *phba = vport->phba; |
dea3101e | 4161 | struct scsi_cmnd *scsi_cmnd = lpfc_cmd->pCmd; |
4162 | struct fcp_cmnd *fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
4163 | IOCB_t *iocb_cmd = &lpfc_cmd->cur_iocbq.iocb; | |
4164 | struct lpfc_iocbq *piocbq = &(lpfc_cmd->cur_iocbq); | |
4165 | int datadir = scsi_cmnd->sc_data_direction; | |
027140ea JS |
4166 | uint8_t *ptr; |
4167 | bool sli4; | |
98bbf5f7 | 4168 | uint32_t fcpdl; |
dea3101e | 4169 | |
58da1ffb JS |
4170 | if (!pnode || !NLP_CHK_NODE_ACT(pnode)) |
4171 | return; | |
4172 | ||
dea3101e | 4173 | lpfc_cmd->fcp_rsp->rspSnsLen = 0; |
69859dc4 JSEC |
4174 | /* clear task management bits */ |
4175 | lpfc_cmd->fcp_cmnd->fcpCntl2 = 0; | |
dea3101e | 4176 | |
91886523 JSEC |
4177 | int_to_scsilun(lpfc_cmd->pCmd->device->lun, |
4178 | &lpfc_cmd->fcp_cmnd->fcp_lun); | |
dea3101e | 4179 | |
027140ea JS |
4180 | ptr = &fcp_cmnd->fcpCdb[0]; |
4181 | memcpy(ptr, scsi_cmnd->cmnd, scsi_cmnd->cmd_len); | |
4182 | if (scsi_cmnd->cmd_len < LPFC_FCP_CDB_LEN) { | |
4183 | ptr += scsi_cmnd->cmd_len; | |
4184 | memset(ptr, 0, (LPFC_FCP_CDB_LEN - scsi_cmnd->cmd_len)); | |
4185 | } | |
4186 | ||
50668633 | 4187 | fcp_cmnd->fcpCntl1 = SIMPLE_Q; |
dea3101e | 4188 | |
027140ea | 4189 | sli4 = (phba->sli_rev == LPFC_SLI_REV4); |
6acb3481 | 4190 | piocbq->iocb.un.fcpi.fcpi_XRdy = 0; |
027140ea | 4191 | |
dea3101e | 4192 | /* |
4193 | * There are three possibilities here - use scatter-gather segment, use | |
4194 | * the single mapping, or neither. Start the lpfc command prep by | |
4195 | * bumping the bpl beyond the fcp_cmnd and fcp_rsp regions to the first | |
4196 | * data bde entry. | |
4197 | */ | |
a0b4f78f | 4198 | if (scsi_sg_count(scsi_cmnd)) { |
dea3101e | 4199 | if (datadir == DMA_TO_DEVICE) { |
4200 | iocb_cmd->ulpCommand = CMD_FCP_IWRITE64_CR; | |
182ba753 | 4201 | iocb_cmd->ulpPU = PARM_READ_CHECK; |
3cb01c57 JS |
4202 | if (vport->cfg_first_burst_size && |
4203 | (pnode->nlp_flag & NLP_FIRSTBURST)) { | |
98bbf5f7 JS |
4204 | fcpdl = scsi_bufflen(scsi_cmnd); |
4205 | if (fcpdl < vport->cfg_first_burst_size) | |
4206 | piocbq->iocb.un.fcpi.fcpi_XRdy = fcpdl; | |
4207 | else | |
4208 | piocbq->iocb.un.fcpi.fcpi_XRdy = | |
4209 | vport->cfg_first_burst_size; | |
3cb01c57 | 4210 | } |
dea3101e | 4211 | fcp_cmnd->fcpCntl3 = WRITE_DATA; |
4212 | phba->fc4OutputRequests++; | |
4213 | } else { | |
4214 | iocb_cmd->ulpCommand = CMD_FCP_IREAD64_CR; | |
4215 | iocb_cmd->ulpPU = PARM_READ_CHECK; | |
dea3101e | 4216 | fcp_cmnd->fcpCntl3 = READ_DATA; |
4217 | phba->fc4InputRequests++; | |
4218 | } | |
4219 | } else { | |
4220 | iocb_cmd->ulpCommand = CMD_FCP_ICMND64_CR; | |
4221 | iocb_cmd->un.fcpi.fcpi_parm = 0; | |
4222 | iocb_cmd->ulpPU = 0; | |
4223 | fcp_cmnd->fcpCntl3 = 0; | |
4224 | phba->fc4ControlRequests++; | |
4225 | } | |
e2a0a9d6 JS |
4226 | if (phba->sli_rev == 3 && |
4227 | !(phba->sli3_options & LPFC_SLI3_BG_ENABLED)) | |
34b02dcd | 4228 | lpfc_fcpcmd_to_iocb(iocb_cmd->unsli3.fcp_ext.icd, fcp_cmnd); |
dea3101e | 4229 | /* |
4230 | * Finish initializing those IOCB fields that are independent | |
4231 | * of the scsi_cmnd request_buffer | |
4232 | */ | |
4233 | piocbq->iocb.ulpContext = pnode->nlp_rpi; | |
027140ea | 4234 | if (sli4) |
6d368e53 JS |
4235 | piocbq->iocb.ulpContext = |
4236 | phba->sli4_hba.rpi_ids[pnode->nlp_rpi]; | |
dea3101e | 4237 | if (pnode->nlp_fcp_info & NLP_FCP_2_DEVICE) |
4238 | piocbq->iocb.ulpFCP2Rcvy = 1; | |
09372820 JS |
4239 | else |
4240 | piocbq->iocb.ulpFCP2Rcvy = 0; | |
dea3101e | 4241 | |
4242 | piocbq->iocb.ulpClass = (pnode->nlp_fcp_info & 0x0f); | |
4243 | piocbq->context1 = lpfc_cmd; | |
4244 | piocbq->iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl; | |
4245 | piocbq->iocb.ulpTimeout = lpfc_cmd->timeout; | |
2e0fef85 | 4246 | piocbq->vport = vport; |
dea3101e | 4247 | } |
4248 | ||
da0436e9 | 4249 | /** |
6d368e53 | 4250 | * lpfc_scsi_prep_task_mgmt_cmd - Convert SLI3 scsi TM cmd to FCP info unit |
9bad7671 JS |
4251 | * @vport: The virtual port for which this call is being executed. |
4252 | * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure. | |
4253 | * @lun: Logical unit number. | |
4254 | * @task_mgmt_cmd: SCSI task management command. | |
4255 | * | |
3772a991 JS |
4256 | * This routine creates FCP information unit corresponding to @task_mgmt_cmd |
4257 | * for device with SLI-3 interface spec. | |
9bad7671 JS |
4258 | * |
4259 | * Return codes: | |
4260 | * 0 - Error | |
4261 | * 1 - Success | |
4262 | **/ | |
dea3101e | 4263 | static int |
f1126688 | 4264 | lpfc_scsi_prep_task_mgmt_cmd(struct lpfc_vport *vport, |
dea3101e | 4265 | struct lpfc_scsi_buf *lpfc_cmd, |
9cb78c16 | 4266 | uint64_t lun, |
dea3101e | 4267 | uint8_t task_mgmt_cmd) |
4268 | { | |
dea3101e | 4269 | struct lpfc_iocbq *piocbq; |
4270 | IOCB_t *piocb; | |
4271 | struct fcp_cmnd *fcp_cmnd; | |
0b18ac42 | 4272 | struct lpfc_rport_data *rdata = lpfc_cmd->rdata; |
dea3101e | 4273 | struct lpfc_nodelist *ndlp = rdata->pnode; |
4274 | ||
58da1ffb JS |
4275 | if (!ndlp || !NLP_CHK_NODE_ACT(ndlp) || |
4276 | ndlp->nlp_state != NLP_STE_MAPPED_NODE) | |
dea3101e | 4277 | return 0; |
dea3101e | 4278 | |
dea3101e | 4279 | piocbq = &(lpfc_cmd->cur_iocbq); |
2e0fef85 JS |
4280 | piocbq->vport = vport; |
4281 | ||
dea3101e | 4282 | piocb = &piocbq->iocb; |
4283 | ||
4284 | fcp_cmnd = lpfc_cmd->fcp_cmnd; | |
34b02dcd JS |
4285 | /* Clear out any old data in the FCP command area */ |
4286 | memset(fcp_cmnd, 0, sizeof(struct fcp_cmnd)); | |
4287 | int_to_scsilun(lun, &fcp_cmnd->fcp_lun); | |
dea3101e | 4288 | fcp_cmnd->fcpCntl2 = task_mgmt_cmd; |
e2a0a9d6 JS |
4289 | if (vport->phba->sli_rev == 3 && |
4290 | !(vport->phba->sli3_options & LPFC_SLI3_BG_ENABLED)) | |
34b02dcd | 4291 | lpfc_fcpcmd_to_iocb(piocb->unsli3.fcp_ext.icd, fcp_cmnd); |
dea3101e | 4292 | piocb->ulpCommand = CMD_FCP_ICMND64_CR; |
dea3101e | 4293 | piocb->ulpContext = ndlp->nlp_rpi; |
6d368e53 JS |
4294 | if (vport->phba->sli_rev == LPFC_SLI_REV4) { |
4295 | piocb->ulpContext = | |
4296 | vport->phba->sli4_hba.rpi_ids[ndlp->nlp_rpi]; | |
4297 | } | |
53151bbb | 4298 | piocb->ulpFCP2Rcvy = (ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE) ? 1 : 0; |
dea3101e | 4299 | piocb->ulpClass = (ndlp->nlp_fcp_info & 0x0f); |
f9226c20 JS |
4300 | piocb->ulpPU = 0; |
4301 | piocb->un.fcpi.fcpi_parm = 0; | |
dea3101e | 4302 | |
4303 | /* ulpTimeout is only one byte */ | |
4304 | if (lpfc_cmd->timeout > 0xff) { | |
4305 | /* | |
4306 | * Do not timeout the command at the firmware level. | |
4307 | * The driver will provide the timeout mechanism. | |
4308 | */ | |
4309 | piocb->ulpTimeout = 0; | |
f1126688 | 4310 | } else |
dea3101e | 4311 | piocb->ulpTimeout = lpfc_cmd->timeout; |
da0436e9 | 4312 | |
f1126688 JS |
4313 | if (vport->phba->sli_rev == LPFC_SLI_REV4) |
4314 | lpfc_sli4_set_rsp_sgl_last(vport->phba, lpfc_cmd); | |
3772a991 | 4315 | |
f1126688 | 4316 | return 1; |
3772a991 JS |
4317 | } |
4318 | ||
4319 | /** | |
25985edc | 4320 | * lpfc_scsi_api_table_setup - Set up scsi api function jump table |
3772a991 JS |
4321 | * @phba: The hba struct for which this call is being executed. |
4322 | * @dev_grp: The HBA PCI-Device group number. | |
4323 | * | |
4324 | * This routine sets up the SCSI interface API function jump table in @phba | |
4325 | * struct. | |
4326 | * Returns: 0 - success, -ENODEV - failure. | |
4327 | **/ | |
4328 | int | |
4329 | lpfc_scsi_api_table_setup(struct lpfc_hba *phba, uint8_t dev_grp) | |
4330 | { | |
4331 | ||
f1126688 JS |
4332 | phba->lpfc_scsi_unprep_dma_buf = lpfc_scsi_unprep_dma_buf; |
4333 | phba->lpfc_scsi_prep_cmnd = lpfc_scsi_prep_cmnd; | |
f1126688 | 4334 | |
3772a991 JS |
4335 | switch (dev_grp) { |
4336 | case LPFC_PCI_DEV_LP: | |
4337 | phba->lpfc_new_scsi_buf = lpfc_new_scsi_buf_s3; | |
4338 | phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s3; | |
acd6859b | 4339 | phba->lpfc_bg_scsi_prep_dma_buf = lpfc_bg_scsi_prep_dma_buf_s3; |
3772a991 | 4340 | phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s3; |
19ca7609 | 4341 | phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf_s3; |
3772a991 | 4342 | break; |
da0436e9 JS |
4343 | case LPFC_PCI_DEV_OC: |
4344 | phba->lpfc_new_scsi_buf = lpfc_new_scsi_buf_s4; | |
4345 | phba->lpfc_scsi_prep_dma_buf = lpfc_scsi_prep_dma_buf_s4; | |
acd6859b | 4346 | phba->lpfc_bg_scsi_prep_dma_buf = lpfc_bg_scsi_prep_dma_buf_s4; |
da0436e9 | 4347 | phba->lpfc_release_scsi_buf = lpfc_release_scsi_buf_s4; |
19ca7609 | 4348 | phba->lpfc_get_scsi_buf = lpfc_get_scsi_buf_s4; |
da0436e9 | 4349 | break; |
3772a991 JS |
4350 | default: |
4351 | lpfc_printf_log(phba, KERN_ERR, LOG_INIT, | |
4352 | "1418 Invalid HBA PCI-device group: 0x%x\n", | |
4353 | dev_grp); | |
4354 | return -ENODEV; | |
4355 | break; | |
4356 | } | |
3772a991 | 4357 | phba->lpfc_rampdown_queue_depth = lpfc_rampdown_queue_depth; |
84d1b006 | 4358 | phba->lpfc_scsi_cmd_iocb_cmpl = lpfc_scsi_cmd_iocb_cmpl; |
3772a991 JS |
4359 | return 0; |
4360 | } | |
4361 | ||
9bad7671 | 4362 | /** |
3621a710 | 4363 | * lpfc_taskmgmt_def_cmpl - IOCB completion routine for task management command |
9bad7671 JS |
4364 | * @phba: The Hba for which this call is being executed. |
4365 | * @cmdiocbq: Pointer to lpfc_iocbq data structure. | |
4366 | * @rspiocbq: Pointer to lpfc_iocbq data structure. | |
4367 | * | |
4368 | * This routine is IOCB completion routine for device reset and target reset | |
4369 | * routine. This routine release scsi buffer associated with lpfc_cmd. | |
4370 | **/ | |
7054a606 JS |
4371 | static void |
4372 | lpfc_tskmgmt_def_cmpl(struct lpfc_hba *phba, | |
4373 | struct lpfc_iocbq *cmdiocbq, | |
4374 | struct lpfc_iocbq *rspiocbq) | |
4375 | { | |
4376 | struct lpfc_scsi_buf *lpfc_cmd = | |
4377 | (struct lpfc_scsi_buf *) cmdiocbq->context1; | |
4378 | if (lpfc_cmd) | |
4379 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
4380 | return; | |
4381 | } | |
4382 | ||
9bad7671 | 4383 | /** |
3621a710 | 4384 | * lpfc_info - Info entry point of scsi_host_template data structure |
9bad7671 JS |
4385 | * @host: The scsi host for which this call is being executed. |
4386 | * | |
4387 | * This routine provides module information about hba. | |
4388 | * | |
4389 | * Reutrn code: | |
4390 | * Pointer to char - Success. | |
4391 | **/ | |
dea3101e | 4392 | const char * |
4393 | lpfc_info(struct Scsi_Host *host) | |
4394 | { | |
2e0fef85 JS |
4395 | struct lpfc_vport *vport = (struct lpfc_vport *) host->hostdata; |
4396 | struct lpfc_hba *phba = vport->phba; | |
8b68cd52 | 4397 | int len, link_speed = 0; |
dea3101e | 4398 | static char lpfcinfobuf[384]; |
4399 | ||
4400 | memset(lpfcinfobuf,0,384); | |
4401 | if (phba && phba->pcidev){ | |
4402 | strncpy(lpfcinfobuf, phba->ModelDesc, 256); | |
4403 | len = strlen(lpfcinfobuf); | |
4404 | snprintf(lpfcinfobuf + len, | |
4405 | 384-len, | |
4406 | " on PCI bus %02x device %02x irq %d", | |
4407 | phba->pcidev->bus->number, | |
4408 | phba->pcidev->devfn, | |
4409 | phba->pcidev->irq); | |
4410 | len = strlen(lpfcinfobuf); | |
4411 | if (phba->Port[0]) { | |
4412 | snprintf(lpfcinfobuf + len, | |
4413 | 384-len, | |
4414 | " port %s", | |
4415 | phba->Port); | |
4416 | } | |
65467b6b | 4417 | len = strlen(lpfcinfobuf); |
8b68cd52 JS |
4418 | if (phba->sli_rev <= LPFC_SLI_REV3) { |
4419 | link_speed = lpfc_sli_port_speed_get(phba); | |
4420 | } else { | |
4421 | if (phba->sli4_hba.link_state.logical_speed) | |
4422 | link_speed = | |
4423 | phba->sli4_hba.link_state.logical_speed; | |
4424 | else | |
4425 | link_speed = phba->sli4_hba.link_state.speed; | |
65467b6b | 4426 | } |
8b68cd52 JS |
4427 | if (link_speed != 0) |
4428 | snprintf(lpfcinfobuf + len, 384-len, | |
4429 | " Logical Link Speed: %d Mbps", link_speed); | |
dea3101e | 4430 | } |
4431 | return lpfcinfobuf; | |
4432 | } | |
4433 | ||
9bad7671 | 4434 | /** |
3621a710 | 4435 | * lpfc_poll_rearm_time - Routine to modify fcp_poll timer of hba |
9bad7671 JS |
4436 | * @phba: The Hba for which this call is being executed. |
4437 | * | |
4438 | * This routine modifies fcp_poll_timer field of @phba by cfg_poll_tmo. | |
4439 | * The default value of cfg_poll_tmo is 10 milliseconds. | |
4440 | **/ | |
875fbdfe JSEC |
4441 | static __inline__ void lpfc_poll_rearm_timer(struct lpfc_hba * phba) |
4442 | { | |
4443 | unsigned long poll_tmo_expires = | |
4444 | (jiffies + msecs_to_jiffies(phba->cfg_poll_tmo)); | |
4445 | ||
0e9bb8d7 | 4446 | if (!list_empty(&phba->sli.ring[LPFC_FCP_RING].txcmplq)) |
875fbdfe JSEC |
4447 | mod_timer(&phba->fcp_poll_timer, |
4448 | poll_tmo_expires); | |
4449 | } | |
4450 | ||
9bad7671 | 4451 | /** |
3621a710 | 4452 | * lpfc_poll_start_timer - Routine to start fcp_poll_timer of HBA |
9bad7671 JS |
4453 | * @phba: The Hba for which this call is being executed. |
4454 | * | |
4455 | * This routine starts the fcp_poll_timer of @phba. | |
4456 | **/ | |
875fbdfe JSEC |
4457 | void lpfc_poll_start_timer(struct lpfc_hba * phba) |
4458 | { | |
4459 | lpfc_poll_rearm_timer(phba); | |
4460 | } | |
4461 | ||
9bad7671 | 4462 | /** |
3621a710 | 4463 | * lpfc_poll_timeout - Restart polling timer |
9bad7671 JS |
4464 | * @ptr: Map to lpfc_hba data structure pointer. |
4465 | * | |
4466 | * This routine restarts fcp_poll timer, when FCP ring polling is enable | |
4467 | * and FCP Ring interrupt is disable. | |
4468 | **/ | |
4469 | ||
875fbdfe JSEC |
4470 | void lpfc_poll_timeout(unsigned long ptr) |
4471 | { | |
2e0fef85 | 4472 | struct lpfc_hba *phba = (struct lpfc_hba *) ptr; |
875fbdfe JSEC |
4473 | |
4474 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { | |
45ed1190 JS |
4475 | lpfc_sli_handle_fast_ring_event(phba, |
4476 | &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ); | |
4477 | ||
875fbdfe JSEC |
4478 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
4479 | lpfc_poll_rearm_timer(phba); | |
4480 | } | |
875fbdfe JSEC |
4481 | } |
4482 | ||
9bad7671 | 4483 | /** |
3621a710 | 4484 | * lpfc_queuecommand - scsi_host_template queuecommand entry point |
9bad7671 JS |
4485 | * @cmnd: Pointer to scsi_cmnd data structure. |
4486 | * @done: Pointer to done routine. | |
4487 | * | |
4488 | * Driver registers this routine to scsi midlayer to submit a @cmd to process. | |
4489 | * This routine prepares an IOCB from scsi command and provides to firmware. | |
4490 | * The @done callback is invoked after driver finished processing the command. | |
4491 | * | |
4492 | * Return value : | |
4493 | * 0 - Success | |
4494 | * SCSI_MLQUEUE_HOST_BUSY - Block all devices served by this host temporarily. | |
4495 | **/ | |
dea3101e | 4496 | static int |
b9a7c631 | 4497 | lpfc_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *cmnd) |
dea3101e | 4498 | { |
2e0fef85 JS |
4499 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; |
4500 | struct lpfc_hba *phba = vport->phba; | |
1ba981fd | 4501 | struct lpfc_rport_data *rdata; |
1c6f4ef5 | 4502 | struct lpfc_nodelist *ndlp; |
0bd4ca25 | 4503 | struct lpfc_scsi_buf *lpfc_cmd; |
19a7b4ae | 4504 | struct fc_rport *rport = starget_to_rport(scsi_target(cmnd->device)); |
19a7b4ae | 4505 | int err; |
dea3101e | 4506 | |
1ba981fd | 4507 | rdata = lpfc_rport_data_from_scsi_device(cmnd->device); |
19a7b4ae JSEC |
4508 | err = fc_remote_port_chkready(rport); |
4509 | if (err) { | |
4510 | cmnd->result = err; | |
dea3101e | 4511 | goto out_fail_command; |
4512 | } | |
1c6f4ef5 | 4513 | ndlp = rdata->pnode; |
dea3101e | 4514 | |
bf08611b | 4515 | if ((scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) && |
acd6859b | 4516 | (!(phba->sli3_options & LPFC_SLI3_BG_ENABLED))) { |
e2a0a9d6 | 4517 | |
6a9c52cf JS |
4518 | lpfc_printf_log(phba, KERN_ERR, LOG_BG, |
4519 | "9058 BLKGRD: ERROR: rcvd protected cmd:%02x" | |
4520 | " op:%02x str=%s without registering for" | |
4521 | " BlockGuard - Rejecting command\n", | |
e2a0a9d6 JS |
4522 | cmnd->cmnd[0], scsi_get_prot_op(cmnd), |
4523 | dif_op_str[scsi_get_prot_op(cmnd)]); | |
4524 | goto out_fail_command; | |
4525 | } | |
4526 | ||
dea3101e | 4527 | /* |
19a7b4ae JSEC |
4528 | * Catch race where our node has transitioned, but the |
4529 | * transport is still transitioning. | |
dea3101e | 4530 | */ |
6b415f5d JS |
4531 | if (!ndlp || !NLP_CHK_NODE_ACT(ndlp)) |
4532 | goto out_tgt_busy; | |
7dc517df | 4533 | if (atomic_read(&ndlp->cmd_pending) >= ndlp->cmd_qdepth) |
3496343d | 4534 | goto out_tgt_busy; |
a93ce024 | 4535 | |
19ca7609 | 4536 | lpfc_cmd = lpfc_get_scsi_buf(phba, ndlp); |
dea3101e | 4537 | if (lpfc_cmd == NULL) { |
eaf15d5b | 4538 | lpfc_rampdown_queue_depth(phba); |
92d7f7b0 | 4539 | |
e8b62011 JS |
4540 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
4541 | "0707 driver's buffer pool is empty, " | |
4542 | "IO busied\n"); | |
dea3101e | 4543 | goto out_host_busy; |
4544 | } | |
4545 | ||
4546 | /* | |
4547 | * Store the midlayer's command structure for the completion phase | |
4548 | * and complete the command initialization. | |
4549 | */ | |
4550 | lpfc_cmd->pCmd = cmnd; | |
4551 | lpfc_cmd->rdata = rdata; | |
4552 | lpfc_cmd->timeout = 0; | |
977b5a0a | 4553 | lpfc_cmd->start_time = jiffies; |
dea3101e | 4554 | cmnd->host_scribble = (unsigned char *)lpfc_cmd; |
dea3101e | 4555 | |
e2a0a9d6 | 4556 | if (scsi_get_prot_op(cmnd) != SCSI_PROT_NORMAL) { |
6a9c52cf | 4557 | if (vport->phba->cfg_enable_bg) { |
737d4248 JS |
4558 | lpfc_printf_vlog(vport, |
4559 | KERN_INFO, LOG_SCSI_CMD, | |
2613470a JS |
4560 | "9033 BLKGRD: rcvd %s cmd:x%x " |
4561 | "sector x%llx cnt %u pt %x\n", | |
4562 | dif_op_str[scsi_get_prot_op(cmnd)], | |
4563 | cmnd->cmnd[0], | |
4564 | (unsigned long long)scsi_get_lba(cmnd), | |
4565 | blk_rq_sectors(cmnd->request), | |
4566 | (cmnd->cmnd[1]>>5)); | |
6a9c52cf | 4567 | } |
e2a0a9d6 JS |
4568 | err = lpfc_bg_scsi_prep_dma_buf(phba, lpfc_cmd); |
4569 | } else { | |
6a9c52cf | 4570 | if (vport->phba->cfg_enable_bg) { |
737d4248 JS |
4571 | lpfc_printf_vlog(vport, |
4572 | KERN_INFO, LOG_SCSI_CMD, | |
2613470a JS |
4573 | "9038 BLKGRD: rcvd PROT_NORMAL cmd: " |
4574 | "x%x sector x%llx cnt %u pt %x\n", | |
4575 | cmnd->cmnd[0], | |
4576 | (unsigned long long)scsi_get_lba(cmnd), | |
9a6b09c0 | 4577 | blk_rq_sectors(cmnd->request), |
2613470a | 4578 | (cmnd->cmnd[1]>>5)); |
6a9c52cf | 4579 | } |
e2a0a9d6 JS |
4580 | err = lpfc_scsi_prep_dma_buf(phba, lpfc_cmd); |
4581 | } | |
4582 | ||
dea3101e | 4583 | if (err) |
4584 | goto out_host_busy_free_buf; | |
4585 | ||
2e0fef85 | 4586 | lpfc_scsi_prep_cmnd(vport, lpfc_cmd, ndlp); |
dea3101e | 4587 | |
977b5a0a | 4588 | atomic_inc(&ndlp->cmd_pending); |
3772a991 | 4589 | err = lpfc_sli_issue_iocb(phba, LPFC_FCP_RING, |
92d7f7b0 | 4590 | &lpfc_cmd->cur_iocbq, SLI_IOCB_RET_IOCB); |
eaf15d5b JS |
4591 | if (err) { |
4592 | atomic_dec(&ndlp->cmd_pending); | |
76f96b6d JS |
4593 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
4594 | "3376 FCP could not issue IOCB err %x" | |
9cb78c16 | 4595 | "FCP cmd x%x <%d/%llu> " |
76f96b6d JS |
4596 | "sid: x%x did: x%x oxid: x%x " |
4597 | "Data: x%x x%x x%x x%x\n", | |
4598 | err, cmnd->cmnd[0], | |
4599 | cmnd->device ? cmnd->device->id : 0xffff, | |
9cb78c16 | 4600 | cmnd->device ? cmnd->device->lun : (u64) -1, |
76f96b6d JS |
4601 | vport->fc_myDID, ndlp->nlp_DID, |
4602 | phba->sli_rev == LPFC_SLI_REV4 ? | |
4603 | lpfc_cmd->cur_iocbq.sli4_xritag : 0xffff, | |
4604 | lpfc_cmd->cur_iocbq.iocb.ulpContext, | |
4605 | lpfc_cmd->cur_iocbq.iocb.ulpIoTag, | |
4606 | lpfc_cmd->cur_iocbq.iocb.ulpTimeout, | |
4607 | (uint32_t) | |
4608 | (cmnd->request->timeout / 1000)); | |
4609 | ||
4610 | ||
dea3101e | 4611 | goto out_host_busy_free_buf; |
eaf15d5b | 4612 | } |
875fbdfe | 4613 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { |
45ed1190 JS |
4614 | lpfc_sli_handle_fast_ring_event(phba, |
4615 | &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ); | |
4616 | ||
875fbdfe JSEC |
4617 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
4618 | lpfc_poll_rearm_timer(phba); | |
4619 | } | |
4620 | ||
dea3101e | 4621 | return 0; |
4622 | ||
4623 | out_host_busy_free_buf: | |
bcf4dbfa | 4624 | lpfc_scsi_unprep_dma_buf(phba, lpfc_cmd); |
0bd4ca25 | 4625 | lpfc_release_scsi_buf(phba, lpfc_cmd); |
dea3101e | 4626 | out_host_busy: |
4627 | return SCSI_MLQUEUE_HOST_BUSY; | |
4628 | ||
3496343d MC |
4629 | out_tgt_busy: |
4630 | return SCSI_MLQUEUE_TARGET_BUSY; | |
4631 | ||
dea3101e | 4632 | out_fail_command: |
b9a7c631 | 4633 | cmnd->scsi_done(cmnd); |
dea3101e | 4634 | return 0; |
4635 | } | |
4636 | ||
f281233d | 4637 | |
9bad7671 | 4638 | /** |
3621a710 | 4639 | * lpfc_abort_handler - scsi_host_template eh_abort_handler entry point |
9bad7671 JS |
4640 | * @cmnd: Pointer to scsi_cmnd data structure. |
4641 | * | |
4642 | * This routine aborts @cmnd pending in base driver. | |
4643 | * | |
4644 | * Return code : | |
4645 | * 0x2003 - Error | |
4646 | * 0x2002 - Success | |
4647 | **/ | |
dea3101e | 4648 | static int |
63c59c3b | 4649 | lpfc_abort_handler(struct scsi_cmnd *cmnd) |
dea3101e | 4650 | { |
2e0fef85 JS |
4651 | struct Scsi_Host *shost = cmnd->device->host; |
4652 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
4653 | struct lpfc_hba *phba = vport->phba; | |
0bd4ca25 JSEC |
4654 | struct lpfc_iocbq *iocb; |
4655 | struct lpfc_iocbq *abtsiocb; | |
dea3101e | 4656 | struct lpfc_scsi_buf *lpfc_cmd; |
dea3101e | 4657 | IOCB_t *cmd, *icmd; |
3a70730a | 4658 | int ret = SUCCESS, status = 0; |
98912dda JS |
4659 | struct lpfc_sli_ring *pring_s4; |
4660 | int ring_number, ret_val; | |
4661 | unsigned long flags, iflags; | |
fa61a54e | 4662 | DECLARE_WAIT_QUEUE_HEAD_ONSTACK(waitq); |
dea3101e | 4663 | |
3a70730a | 4664 | status = fc_block_scsi_eh(cmnd); |
908e18e4 | 4665 | if (status != 0 && status != SUCCESS) |
3a70730a | 4666 | return status; |
4f2e66c6 | 4667 | |
876dd7d0 | 4668 | spin_lock_irqsave(&phba->hbalock, flags); |
4f2e66c6 JS |
4669 | /* driver queued commands are in process of being flushed */ |
4670 | if (phba->hba_flag & HBA_FCP_IOQ_FLUSH) { | |
876dd7d0 | 4671 | spin_unlock_irqrestore(&phba->hbalock, flags); |
4f2e66c6 JS |
4672 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
4673 | "3168 SCSI Layer abort requested I/O has been " | |
4674 | "flushed by LLD.\n"); | |
4675 | return FAILED; | |
4676 | } | |
4677 | ||
0bd4ca25 | 4678 | lpfc_cmd = (struct lpfc_scsi_buf *)cmnd->host_scribble; |
92e3af66 | 4679 | if (!lpfc_cmd || !lpfc_cmd->pCmd) { |
876dd7d0 | 4680 | spin_unlock_irqrestore(&phba->hbalock, flags); |
eee8877e JS |
4681 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
4682 | "2873 SCSI Layer I/O Abort Request IO CMPL Status " | |
9cb78c16 | 4683 | "x%x ID %d LUN %llu\n", |
3a70730a | 4684 | SUCCESS, cmnd->device->id, cmnd->device->lun); |
eee8877e JS |
4685 | return SUCCESS; |
4686 | } | |
dea3101e | 4687 | |
4f2e66c6 JS |
4688 | iocb = &lpfc_cmd->cur_iocbq; |
4689 | /* the command is in process of being cancelled */ | |
4690 | if (!(iocb->iocb_flag & LPFC_IO_ON_TXCMPLQ)) { | |
876dd7d0 | 4691 | spin_unlock_irqrestore(&phba->hbalock, flags); |
4f2e66c6 JS |
4692 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
4693 | "3169 SCSI Layer abort requested I/O has been " | |
4694 | "cancelled by LLD.\n"); | |
4695 | return FAILED; | |
4696 | } | |
0bd4ca25 JSEC |
4697 | /* |
4698 | * If pCmd field of the corresponding lpfc_scsi_buf structure | |
4699 | * points to a different SCSI command, then the driver has | |
4700 | * already completed this command, but the midlayer did not | |
4f2e66c6 | 4701 | * see the completion before the eh fired. Just return SUCCESS. |
0bd4ca25 | 4702 | */ |
4f2e66c6 JS |
4703 | if (lpfc_cmd->pCmd != cmnd) { |
4704 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, | |
4705 | "3170 SCSI Layer abort requested I/O has been " | |
4706 | "completed by LLD.\n"); | |
4707 | goto out_unlock; | |
4708 | } | |
dea3101e | 4709 | |
0bd4ca25 | 4710 | BUG_ON(iocb->context1 != lpfc_cmd); |
dea3101e | 4711 | |
ee62021a JS |
4712 | /* abort issued in recovery is still in progress */ |
4713 | if (iocb->iocb_flag & LPFC_DRIVER_ABORTED) { | |
4714 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, | |
4715 | "3389 SCSI Layer I/O Abort Request is pending\n"); | |
4716 | spin_unlock_irqrestore(&phba->hbalock, flags); | |
4717 | goto wait_for_cmpl; | |
4718 | } | |
4719 | ||
4f2e66c6 | 4720 | abtsiocb = __lpfc_sli_get_iocbq(phba); |
0bd4ca25 JSEC |
4721 | if (abtsiocb == NULL) { |
4722 | ret = FAILED; | |
4f2e66c6 | 4723 | goto out_unlock; |
dea3101e | 4724 | } |
4725 | ||
afbd8d88 JS |
4726 | /* Indicate the IO is being aborted by the driver. */ |
4727 | iocb->iocb_flag |= LPFC_DRIVER_ABORTED; | |
4728 | ||
dea3101e | 4729 | /* |
0bd4ca25 JSEC |
4730 | * The scsi command can not be in txq and it is in flight because the |
4731 | * pCmd is still pointig at the SCSI command we have to abort. There | |
4732 | * is no need to search the txcmplq. Just send an abort to the FW. | |
dea3101e | 4733 | */ |
dea3101e | 4734 | |
0bd4ca25 JSEC |
4735 | cmd = &iocb->iocb; |
4736 | icmd = &abtsiocb->iocb; | |
4737 | icmd->un.acxri.abortType = ABORT_TYPE_ABTS; | |
4738 | icmd->un.acxri.abortContextTag = cmd->ulpContext; | |
3772a991 JS |
4739 | if (phba->sli_rev == LPFC_SLI_REV4) |
4740 | icmd->un.acxri.abortIoTag = iocb->sli4_xritag; | |
4741 | else | |
4742 | icmd->un.acxri.abortIoTag = cmd->ulpIoTag; | |
dea3101e | 4743 | |
0bd4ca25 JSEC |
4744 | icmd->ulpLe = 1; |
4745 | icmd->ulpClass = cmd->ulpClass; | |
5ffc266e JS |
4746 | |
4747 | /* ABTS WQE must go to the same WQ as the WQE to be aborted */ | |
4748 | abtsiocb->fcp_wqidx = iocb->fcp_wqidx; | |
341af102 | 4749 | abtsiocb->iocb_flag |= LPFC_USE_FCPWQIDX; |
9bd2bff5 JS |
4750 | if (iocb->iocb_flag & LPFC_IO_FOF) |
4751 | abtsiocb->iocb_flag |= LPFC_IO_FOF; | |
5ffc266e | 4752 | |
2e0fef85 | 4753 | if (lpfc_is_link_up(phba)) |
0bd4ca25 JSEC |
4754 | icmd->ulpCommand = CMD_ABORT_XRI_CN; |
4755 | else | |
4756 | icmd->ulpCommand = CMD_CLOSE_XRI_CN; | |
dea3101e | 4757 | |
0bd4ca25 | 4758 | abtsiocb->iocb_cmpl = lpfc_sli_abort_fcp_cmpl; |
2e0fef85 | 4759 | abtsiocb->vport = vport; |
98912dda JS |
4760 | if (phba->sli_rev == LPFC_SLI_REV4) { |
4761 | ring_number = MAX_SLI3_CONFIGURED_RINGS + iocb->fcp_wqidx; | |
4762 | pring_s4 = &phba->sli.ring[ring_number]; | |
4763 | /* Note: both hbalock and ring_lock must be set here */ | |
4764 | spin_lock_irqsave(&pring_s4->ring_lock, iflags); | |
4765 | ret_val = __lpfc_sli_issue_iocb(phba, pring_s4->ringno, | |
4766 | abtsiocb, 0); | |
4767 | spin_unlock_irqrestore(&pring_s4->ring_lock, iflags); | |
4768 | } else { | |
4769 | ret_val = __lpfc_sli_issue_iocb(phba, LPFC_FCP_RING, | |
4770 | abtsiocb, 0); | |
4771 | } | |
4f2e66c6 | 4772 | /* no longer need the lock after this point */ |
876dd7d0 | 4773 | spin_unlock_irqrestore(&phba->hbalock, flags); |
4f2e66c6 | 4774 | |
98912dda JS |
4775 | |
4776 | if (ret_val == IOCB_ERROR) { | |
0bd4ca25 JSEC |
4777 | lpfc_sli_release_iocbq(phba, abtsiocb); |
4778 | ret = FAILED; | |
4779 | goto out; | |
4780 | } | |
dea3101e | 4781 | |
875fbdfe | 4782 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
45ed1190 JS |
4783 | lpfc_sli_handle_fast_ring_event(phba, |
4784 | &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ); | |
875fbdfe | 4785 | |
ee62021a | 4786 | wait_for_cmpl: |
fa61a54e | 4787 | lpfc_cmd->waitq = &waitq; |
0bd4ca25 | 4788 | /* Wait for abort to complete */ |
fa61a54e JS |
4789 | wait_event_timeout(waitq, |
4790 | (lpfc_cmd->pCmd != cmnd), | |
256ec0d0 | 4791 | msecs_to_jiffies(2*vport->cfg_devloss_tmo*1000)); |
ee62021a JS |
4792 | |
4793 | spin_lock_irqsave(shost->host_lock, flags); | |
fa61a54e | 4794 | lpfc_cmd->waitq = NULL; |
ee62021a | 4795 | spin_unlock_irqrestore(shost->host_lock, flags); |
dea3101e | 4796 | |
0bd4ca25 JSEC |
4797 | if (lpfc_cmd->pCmd == cmnd) { |
4798 | ret = FAILED; | |
e8b62011 JS |
4799 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
4800 | "0748 abort handler timed out waiting " | |
247ca945 | 4801 | "for abortng I/O (xri:x%x) to complete: " |
9cb78c16 | 4802 | "ret %#x, ID %d, LUN %llu\n", |
247ca945 JS |
4803 | iocb->sli4_xritag, ret, |
4804 | cmnd->device->id, cmnd->device->lun); | |
dea3101e | 4805 | } |
4f2e66c6 | 4806 | goto out; |
dea3101e | 4807 | |
4f2e66c6 | 4808 | out_unlock: |
876dd7d0 | 4809 | spin_unlock_irqrestore(&phba->hbalock, flags); |
4f2e66c6 | 4810 | out: |
e8b62011 JS |
4811 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
4812 | "0749 SCSI Layer I/O Abort Request Status x%x ID %d " | |
9cb78c16 | 4813 | "LUN %llu\n", ret, cmnd->device->id, |
5cd049a5 | 4814 | cmnd->device->lun); |
63c59c3b | 4815 | return ret; |
8fa728a2 JG |
4816 | } |
4817 | ||
bbb9d180 JS |
4818 | static char * |
4819 | lpfc_taskmgmt_name(uint8_t task_mgmt_cmd) | |
4820 | { | |
4821 | switch (task_mgmt_cmd) { | |
4822 | case FCP_ABORT_TASK_SET: | |
4823 | return "ABORT_TASK_SET"; | |
4824 | case FCP_CLEAR_TASK_SET: | |
4825 | return "FCP_CLEAR_TASK_SET"; | |
4826 | case FCP_BUS_RESET: | |
4827 | return "FCP_BUS_RESET"; | |
4828 | case FCP_LUN_RESET: | |
4829 | return "FCP_LUN_RESET"; | |
4830 | case FCP_TARGET_RESET: | |
4831 | return "FCP_TARGET_RESET"; | |
4832 | case FCP_CLEAR_ACA: | |
4833 | return "FCP_CLEAR_ACA"; | |
4834 | case FCP_TERMINATE_TASK: | |
4835 | return "FCP_TERMINATE_TASK"; | |
4836 | default: | |
4837 | return "unknown"; | |
4838 | } | |
4839 | } | |
4840 | ||
53151bbb JS |
4841 | |
4842 | /** | |
4843 | * lpfc_check_fcp_rsp - check the returned fcp_rsp to see if task failed | |
4844 | * @vport: The virtual port for which this call is being executed. | |
4845 | * @lpfc_cmd: Pointer to lpfc_scsi_buf data structure. | |
4846 | * | |
4847 | * This routine checks the FCP RSP INFO to see if the tsk mgmt command succeded | |
4848 | * | |
4849 | * Return code : | |
4850 | * 0x2003 - Error | |
4851 | * 0x2002 - Success | |
4852 | **/ | |
4853 | static int | |
4854 | lpfc_check_fcp_rsp(struct lpfc_vport *vport, struct lpfc_scsi_buf *lpfc_cmd) | |
4855 | { | |
4856 | struct fcp_rsp *fcprsp = lpfc_cmd->fcp_rsp; | |
4857 | uint32_t rsp_info; | |
4858 | uint32_t rsp_len; | |
4859 | uint8_t rsp_info_code; | |
4860 | int ret = FAILED; | |
4861 | ||
4862 | ||
4863 | if (fcprsp == NULL) | |
4864 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, | |
4865 | "0703 fcp_rsp is missing\n"); | |
4866 | else { | |
4867 | rsp_info = fcprsp->rspStatus2; | |
4868 | rsp_len = be32_to_cpu(fcprsp->rspRspLen); | |
4869 | rsp_info_code = fcprsp->rspInfo3; | |
4870 | ||
4871 | ||
4872 | lpfc_printf_vlog(vport, KERN_INFO, | |
4873 | LOG_FCP, | |
4874 | "0706 fcp_rsp valid 0x%x," | |
4875 | " rsp len=%d code 0x%x\n", | |
4876 | rsp_info, | |
4877 | rsp_len, rsp_info_code); | |
4878 | ||
4879 | if ((fcprsp->rspStatus2&RSP_LEN_VALID) && (rsp_len == 8)) { | |
4880 | switch (rsp_info_code) { | |
4881 | case RSP_NO_FAILURE: | |
4882 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, | |
4883 | "0715 Task Mgmt No Failure\n"); | |
4884 | ret = SUCCESS; | |
4885 | break; | |
4886 | case RSP_TM_NOT_SUPPORTED: /* TM rejected */ | |
4887 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, | |
4888 | "0716 Task Mgmt Target " | |
4889 | "reject\n"); | |
4890 | break; | |
4891 | case RSP_TM_NOT_COMPLETED: /* TM failed */ | |
4892 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, | |
4893 | "0717 Task Mgmt Target " | |
4894 | "failed TM\n"); | |
4895 | break; | |
4896 | case RSP_TM_INVALID_LU: /* TM to invalid LU! */ | |
4897 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, | |
4898 | "0718 Task Mgmt to invalid " | |
4899 | "LUN\n"); | |
4900 | break; | |
4901 | } | |
4902 | } | |
4903 | } | |
4904 | return ret; | |
4905 | } | |
4906 | ||
4907 | ||
9bad7671 | 4908 | /** |
bbb9d180 JS |
4909 | * lpfc_send_taskmgmt - Generic SCSI Task Mgmt Handler |
4910 | * @vport: The virtual port for which this call is being executed. | |
4911 | * @rdata: Pointer to remote port local data | |
4912 | * @tgt_id: Target ID of remote device. | |
4913 | * @lun_id: Lun number for the TMF | |
4914 | * @task_mgmt_cmd: type of TMF to send | |
9bad7671 | 4915 | * |
bbb9d180 JS |
4916 | * This routine builds and sends a TMF (SCSI Task Mgmt Function) to |
4917 | * a remote port. | |
9bad7671 | 4918 | * |
bbb9d180 JS |
4919 | * Return Code: |
4920 | * 0x2003 - Error | |
4921 | * 0x2002 - Success. | |
9bad7671 | 4922 | **/ |
dea3101e | 4923 | static int |
bbb9d180 | 4924 | lpfc_send_taskmgmt(struct lpfc_vport *vport, struct lpfc_rport_data *rdata, |
9cb78c16 | 4925 | unsigned tgt_id, uint64_t lun_id, |
bbb9d180 | 4926 | uint8_t task_mgmt_cmd) |
dea3101e | 4927 | { |
2e0fef85 | 4928 | struct lpfc_hba *phba = vport->phba; |
0bd4ca25 | 4929 | struct lpfc_scsi_buf *lpfc_cmd; |
bbb9d180 JS |
4930 | struct lpfc_iocbq *iocbq; |
4931 | struct lpfc_iocbq *iocbqrsp; | |
5989b8d4 | 4932 | struct lpfc_nodelist *pnode = rdata->pnode; |
bbb9d180 | 4933 | int ret; |
915caaaf | 4934 | int status; |
dea3101e | 4935 | |
5989b8d4 | 4936 | if (!pnode || !NLP_CHK_NODE_ACT(pnode)) |
915caaaf | 4937 | return FAILED; |
bbb9d180 | 4938 | |
19ca7609 | 4939 | lpfc_cmd = lpfc_get_scsi_buf(phba, rdata->pnode); |
dea3101e | 4940 | if (lpfc_cmd == NULL) |
915caaaf | 4941 | return FAILED; |
0c411222 | 4942 | lpfc_cmd->timeout = phba->cfg_task_mgmt_tmo; |
0b18ac42 | 4943 | lpfc_cmd->rdata = rdata; |
dea3101e | 4944 | |
bbb9d180 JS |
4945 | status = lpfc_scsi_prep_task_mgmt_cmd(vport, lpfc_cmd, lun_id, |
4946 | task_mgmt_cmd); | |
915caaaf JS |
4947 | if (!status) { |
4948 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
4949 | return FAILED; | |
4950 | } | |
dea3101e | 4951 | |
bbb9d180 | 4952 | iocbq = &lpfc_cmd->cur_iocbq; |
0bd4ca25 | 4953 | iocbqrsp = lpfc_sli_get_iocbq(phba); |
915caaaf JS |
4954 | if (iocbqrsp == NULL) { |
4955 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
4956 | return FAILED; | |
4957 | } | |
5a0916b4 | 4958 | iocbq->iocb_cmpl = lpfc_tskmgmt_def_cmpl; |
bbb9d180 | 4959 | |
e8b62011 | 4960 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, |
9cb78c16 | 4961 | "0702 Issue %s to TGT %d LUN %llu " |
6d368e53 | 4962 | "rpi x%x nlp_flag x%x Data: x%x x%x\n", |
bbb9d180 | 4963 | lpfc_taskmgmt_name(task_mgmt_cmd), tgt_id, lun_id, |
6d368e53 JS |
4964 | pnode->nlp_rpi, pnode->nlp_flag, iocbq->sli4_xritag, |
4965 | iocbq->iocb_flag); | |
bbb9d180 | 4966 | |
3772a991 | 4967 | status = lpfc_sli_issue_iocb_wait(phba, LPFC_FCP_RING, |
915caaaf | 4968 | iocbq, iocbqrsp, lpfc_cmd->timeout); |
53151bbb JS |
4969 | if ((status != IOCB_SUCCESS) || |
4970 | (iocbqrsp->iocb.ulpStatus != IOSTAT_SUCCESS)) { | |
bbb9d180 | 4971 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
9cb78c16 | 4972 | "0727 TMF %s to TGT %d LUN %llu failed (%d, %d) " |
6d368e53 | 4973 | "iocb_flag x%x\n", |
bbb9d180 JS |
4974 | lpfc_taskmgmt_name(task_mgmt_cmd), |
4975 | tgt_id, lun_id, iocbqrsp->iocb.ulpStatus, | |
6d368e53 JS |
4976 | iocbqrsp->iocb.un.ulpWord[4], |
4977 | iocbq->iocb_flag); | |
53151bbb JS |
4978 | /* if ulpStatus != IOCB_SUCCESS, then status == IOCB_SUCCESS */ |
4979 | if (status == IOCB_SUCCESS) { | |
4980 | if (iocbqrsp->iocb.ulpStatus == IOSTAT_FCP_RSP_ERROR) | |
4981 | /* Something in the FCP_RSP was invalid. | |
4982 | * Check conditions */ | |
4983 | ret = lpfc_check_fcp_rsp(vport, lpfc_cmd); | |
4984 | else | |
4985 | ret = FAILED; | |
4986 | } else if (status == IOCB_TIMEDOUT) { | |
4987 | ret = TIMEOUT_ERROR; | |
4988 | } else { | |
4989 | ret = FAILED; | |
4990 | } | |
4991 | lpfc_cmd->status = IOSTAT_DRIVER_REJECT; | |
4992 | } else | |
bbb9d180 JS |
4993 | ret = SUCCESS; |
4994 | ||
6175c02a | 4995 | lpfc_sli_release_iocbq(phba, iocbqrsp); |
bbb9d180 JS |
4996 | |
4997 | if (ret != TIMEOUT_ERROR) | |
4998 | lpfc_release_scsi_buf(phba, lpfc_cmd); | |
4999 | ||
5000 | return ret; | |
5001 | } | |
5002 | ||
5003 | /** | |
5004 | * lpfc_chk_tgt_mapped - | |
5005 | * @vport: The virtual port to check on | |
5006 | * @cmnd: Pointer to scsi_cmnd data structure. | |
5007 | * | |
5008 | * This routine delays until the scsi target (aka rport) for the | |
5009 | * command exists (is present and logged in) or we declare it non-existent. | |
5010 | * | |
5011 | * Return code : | |
5012 | * 0x2003 - Error | |
5013 | * 0x2002 - Success | |
5014 | **/ | |
5015 | static int | |
5016 | lpfc_chk_tgt_mapped(struct lpfc_vport *vport, struct scsi_cmnd *cmnd) | |
5017 | { | |
1ba981fd | 5018 | struct lpfc_rport_data *rdata; |
1c6f4ef5 | 5019 | struct lpfc_nodelist *pnode; |
bbb9d180 JS |
5020 | unsigned long later; |
5021 | ||
1ba981fd | 5022 | rdata = lpfc_rport_data_from_scsi_device(cmnd->device); |
1c6f4ef5 JS |
5023 | if (!rdata) { |
5024 | lpfc_printf_vlog(vport, KERN_INFO, LOG_FCP, | |
5025 | "0797 Tgt Map rport failure: rdata x%p\n", rdata); | |
5026 | return FAILED; | |
5027 | } | |
5028 | pnode = rdata->pnode; | |
bbb9d180 JS |
5029 | /* |
5030 | * If target is not in a MAPPED state, delay until | |
5031 | * target is rediscovered or devloss timeout expires. | |
5032 | */ | |
5033 | later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies; | |
5034 | while (time_after(later, jiffies)) { | |
5035 | if (!pnode || !NLP_CHK_NODE_ACT(pnode)) | |
5036 | return FAILED; | |
5037 | if (pnode->nlp_state == NLP_STE_MAPPED_NODE) | |
5038 | return SUCCESS; | |
5039 | schedule_timeout_uninterruptible(msecs_to_jiffies(500)); | |
1ba981fd | 5040 | rdata = lpfc_rport_data_from_scsi_device(cmnd->device); |
bbb9d180 JS |
5041 | if (!rdata) |
5042 | return FAILED; | |
5043 | pnode = rdata->pnode; | |
5044 | } | |
5045 | if (!pnode || !NLP_CHK_NODE_ACT(pnode) || | |
5046 | (pnode->nlp_state != NLP_STE_MAPPED_NODE)) | |
5047 | return FAILED; | |
5048 | return SUCCESS; | |
5049 | } | |
5050 | ||
5051 | /** | |
5052 | * lpfc_reset_flush_io_context - | |
5053 | * @vport: The virtual port (scsi_host) for the flush context | |
5054 | * @tgt_id: If aborting by Target contect - specifies the target id | |
5055 | * @lun_id: If aborting by Lun context - specifies the lun id | |
5056 | * @context: specifies the context level to flush at. | |
5057 | * | |
5058 | * After a reset condition via TMF, we need to flush orphaned i/o | |
5059 | * contexts from the adapter. This routine aborts any contexts | |
5060 | * outstanding, then waits for their completions. The wait is | |
5061 | * bounded by devloss_tmo though. | |
5062 | * | |
5063 | * Return code : | |
5064 | * 0x2003 - Error | |
5065 | * 0x2002 - Success | |
5066 | **/ | |
5067 | static int | |
5068 | lpfc_reset_flush_io_context(struct lpfc_vport *vport, uint16_t tgt_id, | |
5069 | uint64_t lun_id, lpfc_ctx_cmd context) | |
5070 | { | |
5071 | struct lpfc_hba *phba = vport->phba; | |
5072 | unsigned long later; | |
5073 | int cnt; | |
5074 | ||
5075 | cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context); | |
6175c02a | 5076 | if (cnt) |
98912dda JS |
5077 | lpfc_sli_abort_taskmgmt(vport, |
5078 | &phba->sli.ring[phba->sli.fcp_ring], | |
5079 | tgt_id, lun_id, context); | |
915caaaf JS |
5080 | later = msecs_to_jiffies(2 * vport->cfg_devloss_tmo * 1000) + jiffies; |
5081 | while (time_after(later, jiffies) && cnt) { | |
5082 | schedule_timeout_uninterruptible(msecs_to_jiffies(20)); | |
bbb9d180 | 5083 | cnt = lpfc_sli_sum_iocb(vport, tgt_id, lun_id, context); |
dea3101e | 5084 | } |
dea3101e | 5085 | if (cnt) { |
e8b62011 | 5086 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
bbb9d180 JS |
5087 | "0724 I/O flush failure for context %s : cnt x%x\n", |
5088 | ((context == LPFC_CTX_LUN) ? "LUN" : | |
5089 | ((context == LPFC_CTX_TGT) ? "TGT" : | |
5090 | ((context == LPFC_CTX_HOST) ? "HOST" : "Unknown"))), | |
5091 | cnt); | |
5092 | return FAILED; | |
dea3101e | 5093 | } |
bbb9d180 JS |
5094 | return SUCCESS; |
5095 | } | |
5096 | ||
5097 | /** | |
5098 | * lpfc_device_reset_handler - scsi_host_template eh_device_reset entry point | |
5099 | * @cmnd: Pointer to scsi_cmnd data structure. | |
5100 | * | |
5101 | * This routine does a device reset by sending a LUN_RESET task management | |
5102 | * command. | |
5103 | * | |
5104 | * Return code : | |
5105 | * 0x2003 - Error | |
5106 | * 0x2002 - Success | |
5107 | **/ | |
5108 | static int | |
5109 | lpfc_device_reset_handler(struct scsi_cmnd *cmnd) | |
5110 | { | |
5111 | struct Scsi_Host *shost = cmnd->device->host; | |
5112 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
1ba981fd | 5113 | struct lpfc_rport_data *rdata; |
1c6f4ef5 | 5114 | struct lpfc_nodelist *pnode; |
bbb9d180 | 5115 | unsigned tgt_id = cmnd->device->id; |
9cb78c16 | 5116 | uint64_t lun_id = cmnd->device->lun; |
bbb9d180 | 5117 | struct lpfc_scsi_event_header scsi_event; |
53151bbb | 5118 | int status; |
bbb9d180 | 5119 | |
1ba981fd | 5120 | rdata = lpfc_rport_data_from_scsi_device(cmnd->device); |
1c6f4ef5 JS |
5121 | if (!rdata) { |
5122 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
5123 | "0798 Device Reset rport failure: rdata x%p\n", rdata); | |
5124 | return FAILED; | |
5125 | } | |
5126 | pnode = rdata->pnode; | |
589a52d6 | 5127 | status = fc_block_scsi_eh(cmnd); |
908e18e4 | 5128 | if (status != 0 && status != SUCCESS) |
589a52d6 | 5129 | return status; |
bbb9d180 JS |
5130 | |
5131 | status = lpfc_chk_tgt_mapped(vport, cmnd); | |
5132 | if (status == FAILED) { | |
5133 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
5134 | "0721 Device Reset rport failure: rdata x%p\n", rdata); | |
5135 | return FAILED; | |
5136 | } | |
5137 | ||
5138 | scsi_event.event_type = FC_REG_SCSI_EVENT; | |
5139 | scsi_event.subcategory = LPFC_EVENT_LUNRESET; | |
5140 | scsi_event.lun = lun_id; | |
5141 | memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
5142 | memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
5143 | ||
5144 | fc_host_post_vendor_event(shost, fc_get_event_number(), | |
5145 | sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID); | |
5146 | ||
5147 | status = lpfc_send_taskmgmt(vport, rdata, tgt_id, lun_id, | |
5148 | FCP_LUN_RESET); | |
5149 | ||
5150 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
9cb78c16 | 5151 | "0713 SCSI layer issued Device Reset (%d, %llu) " |
bbb9d180 JS |
5152 | "return x%x\n", tgt_id, lun_id, status); |
5153 | ||
5154 | /* | |
5155 | * We have to clean up i/o as : they may be orphaned by the TMF; | |
5156 | * or if the TMF failed, they may be in an indeterminate state. | |
5157 | * So, continue on. | |
5158 | * We will report success if all the i/o aborts successfully. | |
5159 | */ | |
53151bbb JS |
5160 | if (status == SUCCESS) |
5161 | status = lpfc_reset_flush_io_context(vport, tgt_id, lun_id, | |
bbb9d180 | 5162 | LPFC_CTX_LUN); |
53151bbb JS |
5163 | |
5164 | return status; | |
bbb9d180 JS |
5165 | } |
5166 | ||
5167 | /** | |
5168 | * lpfc_target_reset_handler - scsi_host_template eh_target_reset entry point | |
5169 | * @cmnd: Pointer to scsi_cmnd data structure. | |
5170 | * | |
5171 | * This routine does a target reset by sending a TARGET_RESET task management | |
5172 | * command. | |
5173 | * | |
5174 | * Return code : | |
5175 | * 0x2003 - Error | |
5176 | * 0x2002 - Success | |
5177 | **/ | |
5178 | static int | |
5179 | lpfc_target_reset_handler(struct scsi_cmnd *cmnd) | |
5180 | { | |
5181 | struct Scsi_Host *shost = cmnd->device->host; | |
5182 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
1ba981fd | 5183 | struct lpfc_rport_data *rdata; |
1c6f4ef5 | 5184 | struct lpfc_nodelist *pnode; |
bbb9d180 | 5185 | unsigned tgt_id = cmnd->device->id; |
9cb78c16 | 5186 | uint64_t lun_id = cmnd->device->lun; |
bbb9d180 | 5187 | struct lpfc_scsi_event_header scsi_event; |
53151bbb | 5188 | int status; |
bbb9d180 | 5189 | |
1ba981fd | 5190 | rdata = lpfc_rport_data_from_scsi_device(cmnd->device); |
1c6f4ef5 JS |
5191 | if (!rdata) { |
5192 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
5193 | "0799 Target Reset rport failure: rdata x%p\n", rdata); | |
5194 | return FAILED; | |
5195 | } | |
5196 | pnode = rdata->pnode; | |
589a52d6 | 5197 | status = fc_block_scsi_eh(cmnd); |
908e18e4 | 5198 | if (status != 0 && status != SUCCESS) |
589a52d6 | 5199 | return status; |
bbb9d180 JS |
5200 | |
5201 | status = lpfc_chk_tgt_mapped(vport, cmnd); | |
5202 | if (status == FAILED) { | |
5203 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
5204 | "0722 Target Reset rport failure: rdata x%p\n", rdata); | |
8c50d25c JS |
5205 | spin_lock_irq(shost->host_lock); |
5206 | pnode->nlp_flag &= ~NLP_NPR_ADISC; | |
5207 | pnode->nlp_fcp_info &= ~NLP_FCP_2_DEVICE; | |
5208 | spin_unlock_irq(shost->host_lock); | |
5209 | lpfc_reset_flush_io_context(vport, tgt_id, lun_id, | |
5210 | LPFC_CTX_TGT); | |
5211 | return FAST_IO_FAIL; | |
bbb9d180 JS |
5212 | } |
5213 | ||
5214 | scsi_event.event_type = FC_REG_SCSI_EVENT; | |
5215 | scsi_event.subcategory = LPFC_EVENT_TGTRESET; | |
5216 | scsi_event.lun = 0; | |
5217 | memcpy(scsi_event.wwpn, &pnode->nlp_portname, sizeof(struct lpfc_name)); | |
5218 | memcpy(scsi_event.wwnn, &pnode->nlp_nodename, sizeof(struct lpfc_name)); | |
5219 | ||
5220 | fc_host_post_vendor_event(shost, fc_get_event_number(), | |
5221 | sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID); | |
5222 | ||
5223 | status = lpfc_send_taskmgmt(vport, rdata, tgt_id, lun_id, | |
5224 | FCP_TARGET_RESET); | |
5225 | ||
5226 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
9cb78c16 | 5227 | "0723 SCSI layer issued Target Reset (%d, %llu) " |
bbb9d180 JS |
5228 | "return x%x\n", tgt_id, lun_id, status); |
5229 | ||
5230 | /* | |
5231 | * We have to clean up i/o as : they may be orphaned by the TMF; | |
5232 | * or if the TMF failed, they may be in an indeterminate state. | |
5233 | * So, continue on. | |
5234 | * We will report success if all the i/o aborts successfully. | |
5235 | */ | |
53151bbb JS |
5236 | if (status == SUCCESS) |
5237 | status = lpfc_reset_flush_io_context(vport, tgt_id, lun_id, | |
3a70730a | 5238 | LPFC_CTX_TGT); |
53151bbb | 5239 | return status; |
dea3101e | 5240 | } |
5241 | ||
9bad7671 | 5242 | /** |
3621a710 | 5243 | * lpfc_bus_reset_handler - scsi_host_template eh_bus_reset_handler entry point |
9bad7671 JS |
5244 | * @cmnd: Pointer to scsi_cmnd data structure. |
5245 | * | |
bbb9d180 JS |
5246 | * This routine does target reset to all targets on @cmnd->device->host. |
5247 | * This emulates Parallel SCSI Bus Reset Semantics. | |
9bad7671 | 5248 | * |
bbb9d180 JS |
5249 | * Return code : |
5250 | * 0x2003 - Error | |
5251 | * 0x2002 - Success | |
9bad7671 | 5252 | **/ |
94d0e7b8 | 5253 | static int |
7054a606 | 5254 | lpfc_bus_reset_handler(struct scsi_cmnd *cmnd) |
dea3101e | 5255 | { |
2e0fef85 JS |
5256 | struct Scsi_Host *shost = cmnd->device->host; |
5257 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
dea3101e | 5258 | struct lpfc_nodelist *ndlp = NULL; |
ea2151b4 | 5259 | struct lpfc_scsi_event_header scsi_event; |
bbb9d180 JS |
5260 | int match; |
5261 | int ret = SUCCESS, status, i; | |
ea2151b4 JS |
5262 | |
5263 | scsi_event.event_type = FC_REG_SCSI_EVENT; | |
5264 | scsi_event.subcategory = LPFC_EVENT_BUSRESET; | |
5265 | scsi_event.lun = 0; | |
5266 | memcpy(scsi_event.wwpn, &vport->fc_portname, sizeof(struct lpfc_name)); | |
5267 | memcpy(scsi_event.wwnn, &vport->fc_nodename, sizeof(struct lpfc_name)); | |
5268 | ||
bbb9d180 JS |
5269 | fc_host_post_vendor_event(shost, fc_get_event_number(), |
5270 | sizeof(scsi_event), (char *)&scsi_event, LPFC_NL_VENDOR_ID); | |
dea3101e | 5271 | |
bf08611b | 5272 | status = fc_block_scsi_eh(cmnd); |
908e18e4 | 5273 | if (status != 0 && status != SUCCESS) |
bf08611b | 5274 | return status; |
bbb9d180 | 5275 | |
dea3101e | 5276 | /* |
5277 | * Since the driver manages a single bus device, reset all | |
5278 | * targets known to the driver. Should any target reset | |
5279 | * fail, this routine returns failure to the midlayer. | |
5280 | */ | |
e17da18e | 5281 | for (i = 0; i < LPFC_MAX_TARGET; i++) { |
685f0bf7 | 5282 | /* Search for mapped node by target ID */ |
dea3101e | 5283 | match = 0; |
2e0fef85 JS |
5284 | spin_lock_irq(shost->host_lock); |
5285 | list_for_each_entry(ndlp, &vport->fc_nodes, nlp_listp) { | |
e47c9093 JS |
5286 | if (!NLP_CHK_NODE_ACT(ndlp)) |
5287 | continue; | |
a6571c6e JS |
5288 | if (vport->phba->cfg_fcp2_no_tgt_reset && |
5289 | (ndlp->nlp_fcp_info & NLP_FCP_2_DEVICE)) | |
5290 | continue; | |
685f0bf7 | 5291 | if (ndlp->nlp_state == NLP_STE_MAPPED_NODE && |
915caaaf | 5292 | ndlp->nlp_sid == i && |
685f0bf7 | 5293 | ndlp->rport) { |
dea3101e | 5294 | match = 1; |
5295 | break; | |
5296 | } | |
5297 | } | |
2e0fef85 | 5298 | spin_unlock_irq(shost->host_lock); |
dea3101e | 5299 | if (!match) |
5300 | continue; | |
bbb9d180 JS |
5301 | |
5302 | status = lpfc_send_taskmgmt(vport, ndlp->rport->dd_data, | |
5303 | i, 0, FCP_TARGET_RESET); | |
5304 | ||
5305 | if (status != SUCCESS) { | |
e8b62011 JS |
5306 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
5307 | "0700 Bus Reset on target %d failed\n", | |
5308 | i); | |
915caaaf | 5309 | ret = FAILED; |
dea3101e | 5310 | } |
5311 | } | |
6175c02a | 5312 | /* |
bbb9d180 JS |
5313 | * We have to clean up i/o as : they may be orphaned by the TMFs |
5314 | * above; or if any of the TMFs failed, they may be in an | |
5315 | * indeterminate state. | |
5316 | * We will report success if all the i/o aborts successfully. | |
6175c02a | 5317 | */ |
bbb9d180 JS |
5318 | |
5319 | status = lpfc_reset_flush_io_context(vport, 0, 0, LPFC_CTX_HOST); | |
5320 | if (status != SUCCESS) | |
0bd4ca25 | 5321 | ret = FAILED; |
bbb9d180 | 5322 | |
e8b62011 JS |
5323 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
5324 | "0714 SCSI layer issued Bus Reset Data: x%x\n", ret); | |
dea3101e | 5325 | return ret; |
5326 | } | |
5327 | ||
27b01b82 JS |
5328 | /** |
5329 | * lpfc_host_reset_handler - scsi_host_template eh_host_reset_handler entry pt | |
5330 | * @cmnd: Pointer to scsi_cmnd data structure. | |
5331 | * | |
5332 | * This routine does host reset to the adaptor port. It brings the HBA | |
5333 | * offline, performs a board restart, and then brings the board back online. | |
5334 | * The lpfc_offline calls lpfc_sli_hba_down which will abort and local | |
5335 | * reject all outstanding SCSI commands to the host and error returned | |
5336 | * back to SCSI mid-level. As this will be SCSI mid-level's last resort | |
5337 | * of error handling, it will only return error if resetting of the adapter | |
5338 | * is not successful; in all other cases, will return success. | |
5339 | * | |
5340 | * Return code : | |
5341 | * 0x2003 - Error | |
5342 | * 0x2002 - Success | |
5343 | **/ | |
5344 | static int | |
5345 | lpfc_host_reset_handler(struct scsi_cmnd *cmnd) | |
5346 | { | |
5347 | struct Scsi_Host *shost = cmnd->device->host; | |
5348 | struct lpfc_vport *vport = (struct lpfc_vport *) shost->hostdata; | |
5349 | struct lpfc_hba *phba = vport->phba; | |
5350 | int rc, ret = SUCCESS; | |
5351 | ||
a88dbb6a JS |
5352 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
5353 | "3172 SCSI layer issued Host Reset Data:\n"); | |
5354 | ||
618a5230 | 5355 | lpfc_offline_prep(phba, LPFC_MBX_WAIT); |
27b01b82 JS |
5356 | lpfc_offline(phba); |
5357 | rc = lpfc_sli_brdrestart(phba); | |
5358 | if (rc) | |
5359 | ret = FAILED; | |
a88dbb6a JS |
5360 | rc = lpfc_online(phba); |
5361 | if (rc) | |
5362 | ret = FAILED; | |
27b01b82 JS |
5363 | lpfc_unblock_mgmt_io(phba); |
5364 | ||
a88dbb6a JS |
5365 | if (ret == FAILED) { |
5366 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, | |
5367 | "3323 Failed host reset, bring it offline\n"); | |
5368 | lpfc_sli4_offline_eratt(phba); | |
5369 | } | |
27b01b82 JS |
5370 | return ret; |
5371 | } | |
5372 | ||
9bad7671 | 5373 | /** |
3621a710 | 5374 | * lpfc_slave_alloc - scsi_host_template slave_alloc entry point |
9bad7671 JS |
5375 | * @sdev: Pointer to scsi_device. |
5376 | * | |
5377 | * This routine populates the cmds_per_lun count + 2 scsi_bufs into this host's | |
5378 | * globally available list of scsi buffers. This routine also makes sure scsi | |
5379 | * buffer is not allocated more than HBA limit conveyed to midlayer. This list | |
5380 | * of scsi buffer exists for the lifetime of the driver. | |
5381 | * | |
5382 | * Return codes: | |
5383 | * non-0 - Error | |
5384 | * 0 - Success | |
5385 | **/ | |
dea3101e | 5386 | static int |
5387 | lpfc_slave_alloc(struct scsi_device *sdev) | |
5388 | { | |
2e0fef85 JS |
5389 | struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; |
5390 | struct lpfc_hba *phba = vport->phba; | |
19a7b4ae | 5391 | struct fc_rport *rport = starget_to_rport(scsi_target(sdev)); |
3772a991 | 5392 | uint32_t total = 0; |
dea3101e | 5393 | uint32_t num_to_alloc = 0; |
3772a991 | 5394 | int num_allocated = 0; |
d7c47992 | 5395 | uint32_t sdev_cnt; |
1ba981fd JS |
5396 | struct lpfc_device_data *device_data; |
5397 | unsigned long flags; | |
5398 | struct lpfc_name target_wwpn; | |
dea3101e | 5399 | |
19a7b4ae | 5400 | if (!rport || fc_remote_port_chkready(rport)) |
dea3101e | 5401 | return -ENXIO; |
5402 | ||
f38fa0bb | 5403 | if (phba->cfg_fof) { |
1ba981fd JS |
5404 | |
5405 | /* | |
5406 | * Check to see if the device data structure for the lun | |
5407 | * exists. If not, create one. | |
5408 | */ | |
5409 | ||
5410 | u64_to_wwn(rport->port_name, target_wwpn.u.wwn); | |
5411 | spin_lock_irqsave(&phba->devicelock, flags); | |
5412 | device_data = __lpfc_get_device_data(phba, | |
5413 | &phba->luns, | |
5414 | &vport->fc_portname, | |
5415 | &target_wwpn, | |
5416 | sdev->lun); | |
5417 | if (!device_data) { | |
5418 | spin_unlock_irqrestore(&phba->devicelock, flags); | |
5419 | device_data = lpfc_create_device_data(phba, | |
5420 | &vport->fc_portname, | |
5421 | &target_wwpn, | |
5422 | sdev->lun, true); | |
5423 | if (!device_data) | |
5424 | return -ENOMEM; | |
5425 | spin_lock_irqsave(&phba->devicelock, flags); | |
5426 | list_add_tail(&device_data->listentry, &phba->luns); | |
5427 | } | |
5428 | device_data->rport_data = rport->dd_data; | |
5429 | device_data->available = true; | |
5430 | spin_unlock_irqrestore(&phba->devicelock, flags); | |
5431 | sdev->hostdata = device_data; | |
5432 | } else { | |
5433 | sdev->hostdata = rport->dd_data; | |
5434 | } | |
d7c47992 | 5435 | sdev_cnt = atomic_inc_return(&phba->sdev_cnt); |
dea3101e | 5436 | |
5437 | /* | |
5438 | * Populate the cmds_per_lun count scsi_bufs into this host's globally | |
5439 | * available list of scsi buffers. Don't allocate more than the | |
a784efbf JSEC |
5440 | * HBA limit conveyed to the midlayer via the host structure. The |
5441 | * formula accounts for the lun_queue_depth + error handlers + 1 | |
5442 | * extra. This list of scsi bufs exists for the lifetime of the driver. | |
dea3101e | 5443 | */ |
5444 | total = phba->total_scsi_bufs; | |
3de2a653 | 5445 | num_to_alloc = vport->cfg_lun_queue_depth + 2; |
92d7f7b0 | 5446 | |
d7c47992 JS |
5447 | /* If allocated buffers are enough do nothing */ |
5448 | if ((sdev_cnt * (vport->cfg_lun_queue_depth + 2)) < total) | |
5449 | return 0; | |
5450 | ||
92d7f7b0 JS |
5451 | /* Allow some exchanges to be available always to complete discovery */ |
5452 | if (total >= phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) { | |
e8b62011 JS |
5453 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
5454 | "0704 At limitation of %d preallocated " | |
5455 | "command buffers\n", total); | |
dea3101e | 5456 | return 0; |
92d7f7b0 JS |
5457 | /* Allow some exchanges to be available always to complete discovery */ |
5458 | } else if (total + num_to_alloc > | |
5459 | phba->cfg_hba_queue_depth - LPFC_DISC_IOCB_BUFF_COUNT ) { | |
e8b62011 JS |
5460 | lpfc_printf_vlog(vport, KERN_WARNING, LOG_FCP, |
5461 | "0705 Allocation request of %d " | |
5462 | "command buffers will exceed max of %d. " | |
5463 | "Reducing allocation request to %d.\n", | |
5464 | num_to_alloc, phba->cfg_hba_queue_depth, | |
5465 | (phba->cfg_hba_queue_depth - total)); | |
dea3101e | 5466 | num_to_alloc = phba->cfg_hba_queue_depth - total; |
5467 | } | |
3772a991 JS |
5468 | num_allocated = lpfc_new_scsi_buf(vport, num_to_alloc); |
5469 | if (num_to_alloc != num_allocated) { | |
96f7077f JS |
5470 | lpfc_printf_vlog(vport, KERN_ERR, LOG_FCP, |
5471 | "0708 Allocation request of %d " | |
5472 | "command buffers did not succeed. " | |
5473 | "Allocated %d buffers.\n", | |
5474 | num_to_alloc, num_allocated); | |
dea3101e | 5475 | } |
1c6f4ef5 JS |
5476 | if (num_allocated > 0) |
5477 | phba->total_scsi_bufs += num_allocated; | |
dea3101e | 5478 | return 0; |
5479 | } | |
5480 | ||
9bad7671 | 5481 | /** |
3621a710 | 5482 | * lpfc_slave_configure - scsi_host_template slave_configure entry point |
9bad7671 JS |
5483 | * @sdev: Pointer to scsi_device. |
5484 | * | |
5485 | * This routine configures following items | |
5486 | * - Tag command queuing support for @sdev if supported. | |
9bad7671 JS |
5487 | * - Enable SLI polling for fcp ring if ENABLE_FCP_RING_POLLING flag is set. |
5488 | * | |
5489 | * Return codes: | |
5490 | * 0 - Success | |
5491 | **/ | |
dea3101e | 5492 | static int |
5493 | lpfc_slave_configure(struct scsi_device *sdev) | |
5494 | { | |
2e0fef85 JS |
5495 | struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; |
5496 | struct lpfc_hba *phba = vport->phba; | |
dea3101e | 5497 | |
db5ed4df | 5498 | scsi_change_queue_depth(sdev, vport->cfg_lun_queue_depth); |
dea3101e | 5499 | |
875fbdfe | 5500 | if (phba->cfg_poll & ENABLE_FCP_RING_POLLING) { |
45ed1190 JS |
5501 | lpfc_sli_handle_fast_ring_event(phba, |
5502 | &phba->sli.ring[LPFC_FCP_RING], HA_R0RE_REQ); | |
875fbdfe JSEC |
5503 | if (phba->cfg_poll & DISABLE_FCP_RING_INT) |
5504 | lpfc_poll_rearm_timer(phba); | |
5505 | } | |
5506 | ||
dea3101e | 5507 | return 0; |
5508 | } | |
5509 | ||
9bad7671 | 5510 | /** |
3621a710 | 5511 | * lpfc_slave_destroy - slave_destroy entry point of SHT data structure |
9bad7671 JS |
5512 | * @sdev: Pointer to scsi_device. |
5513 | * | |
5514 | * This routine sets @sdev hostatdata filed to null. | |
5515 | **/ | |
dea3101e | 5516 | static void |
5517 | lpfc_slave_destroy(struct scsi_device *sdev) | |
5518 | { | |
d7c47992 JS |
5519 | struct lpfc_vport *vport = (struct lpfc_vport *) sdev->host->hostdata; |
5520 | struct lpfc_hba *phba = vport->phba; | |
1ba981fd JS |
5521 | unsigned long flags; |
5522 | struct lpfc_device_data *device_data = sdev->hostdata; | |
5523 | ||
d7c47992 | 5524 | atomic_dec(&phba->sdev_cnt); |
f38fa0bb | 5525 | if ((phba->cfg_fof) && (device_data)) { |
1ba981fd JS |
5526 | spin_lock_irqsave(&phba->devicelock, flags); |
5527 | device_data->available = false; | |
5528 | if (!device_data->oas_enabled) | |
5529 | lpfc_delete_device_data(phba, device_data); | |
5530 | spin_unlock_irqrestore(&phba->devicelock, flags); | |
5531 | } | |
dea3101e | 5532 | sdev->hostdata = NULL; |
5533 | return; | |
5534 | } | |
5535 | ||
1ba981fd JS |
5536 | /** |
5537 | * lpfc_create_device_data - creates and initializes device data structure for OAS | |
5538 | * @pha: Pointer to host bus adapter structure. | |
5539 | * @vport_wwpn: Pointer to vport's wwpn information | |
5540 | * @target_wwpn: Pointer to target's wwpn information | |
5541 | * @lun: Lun on target | |
5542 | * @atomic_create: Flag to indicate if memory should be allocated using the | |
5543 | * GFP_ATOMIC flag or not. | |
5544 | * | |
5545 | * This routine creates a device data structure which will contain identifying | |
5546 | * information for the device (host wwpn, target wwpn, lun), state of OAS, | |
5547 | * whether or not the corresponding lun is available by the system, | |
5548 | * and pointer to the rport data. | |
5549 | * | |
5550 | * Return codes: | |
5551 | * NULL - Error | |
5552 | * Pointer to lpfc_device_data - Success | |
5553 | **/ | |
5554 | struct lpfc_device_data* | |
5555 | lpfc_create_device_data(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn, | |
5556 | struct lpfc_name *target_wwpn, uint64_t lun, | |
5557 | bool atomic_create) | |
5558 | { | |
5559 | ||
5560 | struct lpfc_device_data *lun_info; | |
5561 | int memory_flags; | |
5562 | ||
5563 | if (unlikely(!phba) || !vport_wwpn || !target_wwpn || | |
f38fa0bb | 5564 | !(phba->cfg_fof)) |
1ba981fd JS |
5565 | return NULL; |
5566 | ||
5567 | /* Attempt to create the device data to contain lun info */ | |
5568 | ||
5569 | if (atomic_create) | |
5570 | memory_flags = GFP_ATOMIC; | |
5571 | else | |
5572 | memory_flags = GFP_KERNEL; | |
5573 | lun_info = mempool_alloc(phba->device_data_mem_pool, memory_flags); | |
5574 | if (!lun_info) | |
5575 | return NULL; | |
5576 | INIT_LIST_HEAD(&lun_info->listentry); | |
5577 | lun_info->rport_data = NULL; | |
5578 | memcpy(&lun_info->device_id.vport_wwpn, vport_wwpn, | |
5579 | sizeof(struct lpfc_name)); | |
5580 | memcpy(&lun_info->device_id.target_wwpn, target_wwpn, | |
5581 | sizeof(struct lpfc_name)); | |
5582 | lun_info->device_id.lun = lun; | |
5583 | lun_info->oas_enabled = false; | |
5584 | lun_info->available = false; | |
5585 | return lun_info; | |
5586 | } | |
5587 | ||
5588 | /** | |
5589 | * lpfc_delete_device_data - frees a device data structure for OAS | |
5590 | * @pha: Pointer to host bus adapter structure. | |
5591 | * @lun_info: Pointer to device data structure to free. | |
5592 | * | |
5593 | * This routine frees the previously allocated device data structure passed. | |
5594 | * | |
5595 | **/ | |
5596 | void | |
5597 | lpfc_delete_device_data(struct lpfc_hba *phba, | |
5598 | struct lpfc_device_data *lun_info) | |
5599 | { | |
5600 | ||
5601 | if (unlikely(!phba) || !lun_info || | |
f38fa0bb | 5602 | !(phba->cfg_fof)) |
1ba981fd JS |
5603 | return; |
5604 | ||
5605 | if (!list_empty(&lun_info->listentry)) | |
5606 | list_del(&lun_info->listentry); | |
5607 | mempool_free(lun_info, phba->device_data_mem_pool); | |
5608 | return; | |
5609 | } | |
5610 | ||
5611 | /** | |
5612 | * __lpfc_get_device_data - returns the device data for the specified lun | |
5613 | * @pha: Pointer to host bus adapter structure. | |
5614 | * @list: Point to list to search. | |
5615 | * @vport_wwpn: Pointer to vport's wwpn information | |
5616 | * @target_wwpn: Pointer to target's wwpn information | |
5617 | * @lun: Lun on target | |
5618 | * | |
5619 | * This routine searches the list passed for the specified lun's device data. | |
5620 | * This function does not hold locks, it is the responsibility of the caller | |
5621 | * to ensure the proper lock is held before calling the function. | |
5622 | * | |
5623 | * Return codes: | |
5624 | * NULL - Error | |
5625 | * Pointer to lpfc_device_data - Success | |
5626 | **/ | |
5627 | struct lpfc_device_data* | |
5628 | __lpfc_get_device_data(struct lpfc_hba *phba, struct list_head *list, | |
5629 | struct lpfc_name *vport_wwpn, | |
5630 | struct lpfc_name *target_wwpn, uint64_t lun) | |
5631 | { | |
5632 | ||
5633 | struct lpfc_device_data *lun_info; | |
5634 | ||
5635 | if (unlikely(!phba) || !list || !vport_wwpn || !target_wwpn || | |
f38fa0bb | 5636 | !phba->cfg_fof) |
1ba981fd JS |
5637 | return NULL; |
5638 | ||
5639 | /* Check to see if the lun is already enabled for OAS. */ | |
5640 | ||
5641 | list_for_each_entry(lun_info, list, listentry) { | |
5642 | if ((memcmp(&lun_info->device_id.vport_wwpn, vport_wwpn, | |
5643 | sizeof(struct lpfc_name)) == 0) && | |
5644 | (memcmp(&lun_info->device_id.target_wwpn, target_wwpn, | |
5645 | sizeof(struct lpfc_name)) == 0) && | |
5646 | (lun_info->device_id.lun == lun)) | |
5647 | return lun_info; | |
5648 | } | |
5649 | ||
5650 | return NULL; | |
5651 | } | |
5652 | ||
5653 | /** | |
5654 | * lpfc_find_next_oas_lun - searches for the next oas lun | |
5655 | * @pha: Pointer to host bus adapter structure. | |
5656 | * @vport_wwpn: Pointer to vport's wwpn information | |
5657 | * @target_wwpn: Pointer to target's wwpn information | |
5658 | * @starting_lun: Pointer to the lun to start searching for | |
5659 | * @found_vport_wwpn: Pointer to the found lun's vport wwpn information | |
5660 | * @found_target_wwpn: Pointer to the found lun's target wwpn information | |
5661 | * @found_lun: Pointer to the found lun. | |
5662 | * @found_lun_status: Pointer to status of the found lun. | |
5663 | * | |
5664 | * This routine searches the luns list for the specified lun | |
5665 | * or the first lun for the vport/target. If the vport wwpn contains | |
5666 | * a zero value then a specific vport is not specified. In this case | |
5667 | * any vport which contains the lun will be considered a match. If the | |
5668 | * target wwpn contains a zero value then a specific target is not specified. | |
5669 | * In this case any target which contains the lun will be considered a | |
5670 | * match. If the lun is found, the lun, vport wwpn, target wwpn and lun status | |
5671 | * are returned. The function will also return the next lun if available. | |
5672 | * If the next lun is not found, starting_lun parameter will be set to | |
5673 | * NO_MORE_OAS_LUN. | |
5674 | * | |
5675 | * Return codes: | |
5676 | * non-0 - Error | |
5677 | * 0 - Success | |
5678 | **/ | |
5679 | bool | |
5680 | lpfc_find_next_oas_lun(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn, | |
5681 | struct lpfc_name *target_wwpn, uint64_t *starting_lun, | |
5682 | struct lpfc_name *found_vport_wwpn, | |
5683 | struct lpfc_name *found_target_wwpn, | |
5684 | uint64_t *found_lun, | |
5685 | uint32_t *found_lun_status) | |
5686 | { | |
5687 | ||
5688 | unsigned long flags; | |
5689 | struct lpfc_device_data *lun_info; | |
5690 | struct lpfc_device_id *device_id; | |
5691 | uint64_t lun; | |
5692 | bool found = false; | |
5693 | ||
5694 | if (unlikely(!phba) || !vport_wwpn || !target_wwpn || | |
5695 | !starting_lun || !found_vport_wwpn || | |
5696 | !found_target_wwpn || !found_lun || !found_lun_status || | |
5697 | (*starting_lun == NO_MORE_OAS_LUN) || | |
f38fa0bb | 5698 | !phba->cfg_fof) |
1ba981fd JS |
5699 | return false; |
5700 | ||
5701 | lun = *starting_lun; | |
5702 | *found_lun = NO_MORE_OAS_LUN; | |
5703 | *starting_lun = NO_MORE_OAS_LUN; | |
5704 | ||
5705 | /* Search for lun or the lun closet in value */ | |
5706 | ||
5707 | spin_lock_irqsave(&phba->devicelock, flags); | |
5708 | list_for_each_entry(lun_info, &phba->luns, listentry) { | |
5709 | if (((wwn_to_u64(vport_wwpn->u.wwn) == 0) || | |
5710 | (memcmp(&lun_info->device_id.vport_wwpn, vport_wwpn, | |
5711 | sizeof(struct lpfc_name)) == 0)) && | |
5712 | ((wwn_to_u64(target_wwpn->u.wwn) == 0) || | |
5713 | (memcmp(&lun_info->device_id.target_wwpn, target_wwpn, | |
5714 | sizeof(struct lpfc_name)) == 0)) && | |
5715 | (lun_info->oas_enabled)) { | |
5716 | device_id = &lun_info->device_id; | |
5717 | if ((!found) && | |
5718 | ((lun == FIND_FIRST_OAS_LUN) || | |
5719 | (device_id->lun == lun))) { | |
5720 | *found_lun = device_id->lun; | |
5721 | memcpy(found_vport_wwpn, | |
5722 | &device_id->vport_wwpn, | |
5723 | sizeof(struct lpfc_name)); | |
5724 | memcpy(found_target_wwpn, | |
5725 | &device_id->target_wwpn, | |
5726 | sizeof(struct lpfc_name)); | |
5727 | if (lun_info->available) | |
5728 | *found_lun_status = | |
5729 | OAS_LUN_STATUS_EXISTS; | |
5730 | else | |
5731 | *found_lun_status = 0; | |
5732 | if (phba->cfg_oas_flags & OAS_FIND_ANY_VPORT) | |
5733 | memset(vport_wwpn, 0x0, | |
5734 | sizeof(struct lpfc_name)); | |
5735 | if (phba->cfg_oas_flags & OAS_FIND_ANY_TARGET) | |
5736 | memset(target_wwpn, 0x0, | |
5737 | sizeof(struct lpfc_name)); | |
5738 | found = true; | |
5739 | } else if (found) { | |
5740 | *starting_lun = device_id->lun; | |
5741 | memcpy(vport_wwpn, &device_id->vport_wwpn, | |
5742 | sizeof(struct lpfc_name)); | |
5743 | memcpy(target_wwpn, &device_id->target_wwpn, | |
5744 | sizeof(struct lpfc_name)); | |
5745 | break; | |
5746 | } | |
5747 | } | |
5748 | } | |
5749 | spin_unlock_irqrestore(&phba->devicelock, flags); | |
5750 | return found; | |
5751 | } | |
5752 | ||
5753 | /** | |
5754 | * lpfc_enable_oas_lun - enables a lun for OAS operations | |
5755 | * @pha: Pointer to host bus adapter structure. | |
5756 | * @vport_wwpn: Pointer to vport's wwpn information | |
5757 | * @target_wwpn: Pointer to target's wwpn information | |
5758 | * @lun: Lun | |
5759 | * | |
5760 | * This routine enables a lun for oas operations. The routines does so by | |
5761 | * doing the following : | |
5762 | * | |
5763 | * 1) Checks to see if the device data for the lun has been created. | |
5764 | * 2) If found, sets the OAS enabled flag if not set and returns. | |
5765 | * 3) Otherwise, creates a device data structure. | |
5766 | * 4) If successfully created, indicates the device data is for an OAS lun, | |
5767 | * indicates the lun is not available and add to the list of luns. | |
5768 | * | |
5769 | * Return codes: | |
5770 | * false - Error | |
5771 | * true - Success | |
5772 | **/ | |
5773 | bool | |
5774 | lpfc_enable_oas_lun(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn, | |
5775 | struct lpfc_name *target_wwpn, uint64_t lun) | |
5776 | { | |
5777 | ||
5778 | struct lpfc_device_data *lun_info; | |
5779 | unsigned long flags; | |
5780 | ||
5781 | if (unlikely(!phba) || !vport_wwpn || !target_wwpn || | |
f38fa0bb | 5782 | !phba->cfg_fof) |
1ba981fd JS |
5783 | return false; |
5784 | ||
5785 | spin_lock_irqsave(&phba->devicelock, flags); | |
5786 | ||
5787 | /* Check to see if the device data for the lun has been created */ | |
5788 | lun_info = __lpfc_get_device_data(phba, &phba->luns, vport_wwpn, | |
5789 | target_wwpn, lun); | |
5790 | if (lun_info) { | |
5791 | if (!lun_info->oas_enabled) | |
5792 | lun_info->oas_enabled = true; | |
5793 | spin_unlock_irqrestore(&phba->devicelock, flags); | |
5794 | return true; | |
5795 | } | |
5796 | ||
5797 | /* Create an lun info structure and add to list of luns */ | |
5798 | lun_info = lpfc_create_device_data(phba, vport_wwpn, target_wwpn, lun, | |
5799 | false); | |
5800 | if (lun_info) { | |
5801 | lun_info->oas_enabled = true; | |
5802 | lun_info->available = false; | |
5803 | list_add_tail(&lun_info->listentry, &phba->luns); | |
5804 | spin_unlock_irqrestore(&phba->devicelock, flags); | |
5805 | return true; | |
5806 | } | |
5807 | spin_unlock_irqrestore(&phba->devicelock, flags); | |
5808 | return false; | |
5809 | } | |
5810 | ||
5811 | /** | |
5812 | * lpfc_disable_oas_lun - disables a lun for OAS operations | |
5813 | * @pha: Pointer to host bus adapter structure. | |
5814 | * @vport_wwpn: Pointer to vport's wwpn information | |
5815 | * @target_wwpn: Pointer to target's wwpn information | |
5816 | * @lun: Lun | |
5817 | * | |
5818 | * This routine disables a lun for oas operations. The routines does so by | |
5819 | * doing the following : | |
5820 | * | |
5821 | * 1) Checks to see if the device data for the lun is created. | |
5822 | * 2) If present, clears the flag indicating this lun is for OAS. | |
5823 | * 3) If the lun is not available by the system, the device data is | |
5824 | * freed. | |
5825 | * | |
5826 | * Return codes: | |
5827 | * false - Error | |
5828 | * true - Success | |
5829 | **/ | |
5830 | bool | |
5831 | lpfc_disable_oas_lun(struct lpfc_hba *phba, struct lpfc_name *vport_wwpn, | |
5832 | struct lpfc_name *target_wwpn, uint64_t lun) | |
5833 | { | |
5834 | ||
5835 | struct lpfc_device_data *lun_info; | |
5836 | unsigned long flags; | |
5837 | ||
5838 | if (unlikely(!phba) || !vport_wwpn || !target_wwpn || | |
f38fa0bb | 5839 | !phba->cfg_fof) |
1ba981fd JS |
5840 | return false; |
5841 | ||
5842 | spin_lock_irqsave(&phba->devicelock, flags); | |
5843 | ||
5844 | /* Check to see if the lun is available. */ | |
5845 | lun_info = __lpfc_get_device_data(phba, | |
5846 | &phba->luns, vport_wwpn, | |
5847 | target_wwpn, lun); | |
5848 | if (lun_info) { | |
5849 | lun_info->oas_enabled = false; | |
5850 | if (!lun_info->available) | |
5851 | lpfc_delete_device_data(phba, lun_info); | |
5852 | spin_unlock_irqrestore(&phba->devicelock, flags); | |
5853 | return true; | |
5854 | } | |
5855 | ||
5856 | spin_unlock_irqrestore(&phba->devicelock, flags); | |
5857 | return false; | |
5858 | } | |
92d7f7b0 | 5859 | |
dea3101e | 5860 | struct scsi_host_template lpfc_template = { |
5861 | .module = THIS_MODULE, | |
5862 | .name = LPFC_DRIVER_NAME, | |
5863 | .info = lpfc_info, | |
5864 | .queuecommand = lpfc_queuecommand, | |
5865 | .eh_abort_handler = lpfc_abort_handler, | |
bbb9d180 JS |
5866 | .eh_device_reset_handler = lpfc_device_reset_handler, |
5867 | .eh_target_reset_handler = lpfc_target_reset_handler, | |
7054a606 | 5868 | .eh_bus_reset_handler = lpfc_bus_reset_handler, |
27b01b82 | 5869 | .eh_host_reset_handler = lpfc_host_reset_handler, |
dea3101e | 5870 | .slave_alloc = lpfc_slave_alloc, |
5871 | .slave_configure = lpfc_slave_configure, | |
5872 | .slave_destroy = lpfc_slave_destroy, | |
47a8617c | 5873 | .scan_finished = lpfc_scan_finished, |
dea3101e | 5874 | .this_id = -1, |
83108bd3 | 5875 | .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT, |
dea3101e | 5876 | .cmd_per_lun = LPFC_CMD_PER_LUN, |
5877 | .use_clustering = ENABLE_CLUSTERING, | |
2e0fef85 | 5878 | .shost_attrs = lpfc_hba_attrs, |
564b2960 | 5879 | .max_sectors = 0xFFFF, |
f1c3b0fc | 5880 | .vendor_id = LPFC_NL_VENDOR_ID, |
db5ed4df | 5881 | .change_queue_depth = scsi_change_queue_depth, |
2ecb204d | 5882 | .use_blk_tags = 1, |
c40ecc12 | 5883 | .track_queue_depth = 1, |
dea3101e | 5884 | }; |
3de2a653 JS |
5885 | |
5886 | struct scsi_host_template lpfc_vport_template = { | |
5887 | .module = THIS_MODULE, | |
5888 | .name = LPFC_DRIVER_NAME, | |
5889 | .info = lpfc_info, | |
5890 | .queuecommand = lpfc_queuecommand, | |
5891 | .eh_abort_handler = lpfc_abort_handler, | |
bbb9d180 JS |
5892 | .eh_device_reset_handler = lpfc_device_reset_handler, |
5893 | .eh_target_reset_handler = lpfc_target_reset_handler, | |
3de2a653 JS |
5894 | .eh_bus_reset_handler = lpfc_bus_reset_handler, |
5895 | .slave_alloc = lpfc_slave_alloc, | |
5896 | .slave_configure = lpfc_slave_configure, | |
5897 | .slave_destroy = lpfc_slave_destroy, | |
5898 | .scan_finished = lpfc_scan_finished, | |
5899 | .this_id = -1, | |
83108bd3 | 5900 | .sg_tablesize = LPFC_DEFAULT_SG_SEG_CNT, |
3de2a653 JS |
5901 | .cmd_per_lun = LPFC_CMD_PER_LUN, |
5902 | .use_clustering = ENABLE_CLUSTERING, | |
5903 | .shost_attrs = lpfc_vport_attrs, | |
5904 | .max_sectors = 0xFFFF, | |
db5ed4df | 5905 | .change_queue_depth = scsi_change_queue_depth, |
2ecb204d | 5906 | .use_blk_tags = 1, |
c40ecc12 | 5907 | .track_queue_depth = 1, |
3de2a653 | 5908 | }; |