xref: /freebsd/sys/cam/ctl/ctl_tpc.c (revision 65dcb5bcb1993631f47d8acc207904411e135758)
1 /*-
2  * Copyright (c) 2014 Alexander Motin <mav@FreeBSD.org>
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer,
10  *    without modification, immediately at the beginning of the file.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25  */
26 
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD$");
29 
30 #include <sys/param.h>
31 #include <sys/systm.h>
32 #include <sys/kernel.h>
33 #include <sys/types.h>
34 #include <sys/lock.h>
35 #include <sys/module.h>
36 #include <sys/mutex.h>
37 #include <sys/condvar.h>
38 #include <sys/malloc.h>
39 #include <sys/conf.h>
40 #include <sys/queue.h>
41 #include <sys/sysctl.h>
42 #include <machine/atomic.h>
43 
44 #include <cam/cam.h>
45 #include <cam/scsi/scsi_all.h>
46 #include <cam/scsi/scsi_da.h>
47 #include <cam/ctl/ctl_io.h>
48 #include <cam/ctl/ctl.h>
49 #include <cam/ctl/ctl_frontend.h>
50 #include <cam/ctl/ctl_util.h>
51 #include <cam/ctl/ctl_backend.h>
52 #include <cam/ctl/ctl_ioctl.h>
53 #include <cam/ctl/ctl_ha.h>
54 #include <cam/ctl/ctl_private.h>
55 #include <cam/ctl/ctl_debug.h>
56 #include <cam/ctl/ctl_scsi_all.h>
57 #include <cam/ctl/ctl_tpc.h>
58 #include <cam/ctl/ctl_error.h>
59 
60 #define	TPC_MAX_CSCDS	64
61 #define	TPC_MAX_SEGS	64
62 #define	TPC_MAX_SEG	0
63 #define	TPC_MAX_LIST	8192
64 #define	TPC_MAX_INLINE	0
65 #define	TPC_MAX_LISTS	255
66 #define	TPC_MAX_IO_SIZE	(1024 * 1024)
67 #define	TPC_MAX_IOCHUNK_SIZE	(TPC_MAX_IO_SIZE * 16)
68 #define	TPC_MIN_TOKEN_TIMEOUT	1
69 #define	TPC_DFL_TOKEN_TIMEOUT	60
70 #define	TPC_MAX_TOKEN_TIMEOUT	600
71 
72 MALLOC_DEFINE(M_CTL_TPC, "ctltpc", "CTL TPC");
73 
74 typedef enum {
75 	TPC_ERR_RETRY		= 0x000,
76 	TPC_ERR_FAIL		= 0x001,
77 	TPC_ERR_MASK		= 0x0ff,
78 	TPC_ERR_NO_DECREMENT	= 0x100
79 } tpc_error_action;
80 
81 struct tpc_list;
82 TAILQ_HEAD(runl, tpc_io);
83 struct tpc_io {
84 	union ctl_io		*io;
85 	uint64_t		 lun;
86 	struct tpc_list		*list;
87 	struct runl		 run;
88 	TAILQ_ENTRY(tpc_io)	 rlinks;
89 	TAILQ_ENTRY(tpc_io)	 links;
90 };
91 
92 struct tpc_token {
93 	uint8_t			 token[512];
94 	uint64_t		 lun;
95 	uint32_t		 blocksize;
96 	uint8_t			*params;
97 	struct scsi_range_desc	*range;
98 	int			 nrange;
99 	int			 active;
100 	time_t			 last_active;
101 	uint32_t		 timeout;
102 	TAILQ_ENTRY(tpc_token)	 links;
103 };
104 
105 struct tpc_list {
106 	uint8_t			 service_action;
107 	int			 init_port;
108 	uint32_t		 init_idx;
109 	uint32_t		 list_id;
110 	uint8_t			 flags;
111 	uint8_t			*params;
112 	struct scsi_ec_cscd	*cscd;
113 	struct scsi_ec_segment	*seg[TPC_MAX_SEGS];
114 	uint8_t			*inl;
115 	int			 ncscd;
116 	int			 nseg;
117 	int			 leninl;
118 	struct tpc_token	*token;
119 	struct scsi_range_desc	*range;
120 	int			 nrange;
121 	off_t			 offset_into_rod;
122 
123 	int			 curseg;
124 	off_t			 cursectors;
125 	off_t			 curbytes;
126 	int			 curops;
127 	int			 stage;
128 	uint8_t			*buf;
129 	off_t			 segsectors;
130 	off_t			 segbytes;
131 	int			 tbdio;
132 	int			 error;
133 	int			 abort;
134 	int			 completed;
135 	time_t			 last_active;
136 	TAILQ_HEAD(, tpc_io)	 allio;
137 	struct scsi_sense_data	 sense_data;
138 	uint8_t			 sense_len;
139 	uint8_t			 scsi_status;
140 	struct ctl_scsiio	*ctsio;
141 	struct ctl_lun		*lun;
142 	int			 res_token_valid;
143 	uint8_t			 res_token[512];
144 	TAILQ_ENTRY(tpc_list)	 links;
145 };
146 
147 static void
148 tpc_timeout(void *arg)
149 {
150 	struct ctl_softc *softc = arg;
151 	struct ctl_lun *lun;
152 	struct tpc_token *token, *ttoken;
153 	struct tpc_list *list, *tlist;
154 
155 	/* Free completed lists with expired timeout. */
156 	STAILQ_FOREACH(lun, &softc->lun_list, links) {
157 		mtx_lock(&lun->lun_lock);
158 		TAILQ_FOREACH_SAFE(list, &lun->tpc_lists, links, tlist) {
159 			if (!list->completed || time_uptime < list->last_active +
160 			    TPC_DFL_TOKEN_TIMEOUT)
161 				continue;
162 			TAILQ_REMOVE(&lun->tpc_lists, list, links);
163 			free(list, M_CTL);
164 		}
165 		mtx_unlock(&lun->lun_lock);
166 	}
167 
168 	/* Free inactive ROD tokens with expired timeout. */
169 	mtx_lock(&softc->tpc_lock);
170 	TAILQ_FOREACH_SAFE(token, &softc->tpc_tokens, links, ttoken) {
171 		if (token->active ||
172 		    time_uptime < token->last_active + token->timeout + 1)
173 			continue;
174 		TAILQ_REMOVE(&softc->tpc_tokens, token, links);
175 		free(token->params, M_CTL);
176 		free(token, M_CTL);
177 	}
178 	mtx_unlock(&softc->tpc_lock);
179 	callout_schedule(&softc->tpc_timeout, hz);
180 }
181 
182 void
183 ctl_tpc_init(struct ctl_softc *softc)
184 {
185 
186 	mtx_init(&softc->tpc_lock, "CTL TPC mutex", NULL, MTX_DEF);
187 	TAILQ_INIT(&softc->tpc_tokens);
188 	callout_init_mtx(&softc->tpc_timeout, &softc->ctl_lock, 0);
189 	callout_reset(&softc->tpc_timeout, hz, tpc_timeout, softc);
190 }
191 
192 void
193 ctl_tpc_shutdown(struct ctl_softc *softc)
194 {
195 	struct tpc_token *token;
196 
197 	callout_drain(&softc->tpc_timeout);
198 
199 	/* Free ROD tokens. */
200 	mtx_lock(&softc->tpc_lock);
201 	while ((token = TAILQ_FIRST(&softc->tpc_tokens)) != NULL) {
202 		TAILQ_REMOVE(&softc->tpc_tokens, token, links);
203 		free(token->params, M_CTL);
204 		free(token, M_CTL);
205 	}
206 	mtx_unlock(&softc->tpc_lock);
207 	mtx_destroy(&softc->tpc_lock);
208 }
209 
210 void
211 ctl_tpc_lun_init(struct ctl_lun *lun)
212 {
213 
214 	TAILQ_INIT(&lun->tpc_lists);
215 }
216 
217 void
218 ctl_tpc_lun_shutdown(struct ctl_lun *lun)
219 {
220 	struct ctl_softc *softc = lun->ctl_softc;
221 	struct tpc_list *list;
222 	struct tpc_token *token, *ttoken;
223 
224 	/* Free lists for this LUN. */
225 	while ((list = TAILQ_FIRST(&lun->tpc_lists)) != NULL) {
226 		TAILQ_REMOVE(&lun->tpc_lists, list, links);
227 		KASSERT(list->completed,
228 		    ("Not completed TPC (%p) on shutdown", list));
229 		free(list, M_CTL);
230 	}
231 
232 	/* Free ROD tokens for this LUN. */
233 	mtx_lock(&softc->tpc_lock);
234 	TAILQ_FOREACH_SAFE(token, &softc->tpc_tokens, links, ttoken) {
235 		if (token->lun != lun->lun || token->active)
236 			continue;
237 		TAILQ_REMOVE(&softc->tpc_tokens, token, links);
238 		free(token->params, M_CTL);
239 		free(token, M_CTL);
240 	}
241 	mtx_unlock(&softc->tpc_lock);
242 }
243 
244 int
245 ctl_inquiry_evpd_tpc(struct ctl_scsiio *ctsio, int alloc_len)
246 {
247 	struct scsi_vpd_tpc *tpc_ptr;
248 	struct scsi_vpd_tpc_descriptor *d_ptr;
249 	struct scsi_vpd_tpc_descriptor_bdrl *bdrl_ptr;
250 	struct scsi_vpd_tpc_descriptor_sc *sc_ptr;
251 	struct scsi_vpd_tpc_descriptor_sc_descr *scd_ptr;
252 	struct scsi_vpd_tpc_descriptor_pd *pd_ptr;
253 	struct scsi_vpd_tpc_descriptor_sd *sd_ptr;
254 	struct scsi_vpd_tpc_descriptor_sdid *sdid_ptr;
255 	struct scsi_vpd_tpc_descriptor_rtf *rtf_ptr;
256 	struct scsi_vpd_tpc_descriptor_rtf_block *rtfb_ptr;
257 	struct scsi_vpd_tpc_descriptor_srt *srt_ptr;
258 	struct scsi_vpd_tpc_descriptor_srtd *srtd_ptr;
259 	struct scsi_vpd_tpc_descriptor_gco *gco_ptr;
260 	struct ctl_lun *lun;
261 	int data_len;
262 
263 	lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
264 
265 	data_len = sizeof(struct scsi_vpd_tpc) +
266 	    sizeof(struct scsi_vpd_tpc_descriptor_bdrl) +
267 	    roundup2(sizeof(struct scsi_vpd_tpc_descriptor_sc) +
268 	     2 * sizeof(struct scsi_vpd_tpc_descriptor_sc_descr) + 11, 4) +
269 	    sizeof(struct scsi_vpd_tpc_descriptor_pd) +
270 	    roundup2(sizeof(struct scsi_vpd_tpc_descriptor_sd) + 4, 4) +
271 	    roundup2(sizeof(struct scsi_vpd_tpc_descriptor_sdid) + 2, 4) +
272 	    sizeof(struct scsi_vpd_tpc_descriptor_rtf) +
273 	     sizeof(struct scsi_vpd_tpc_descriptor_rtf_block) +
274 	    sizeof(struct scsi_vpd_tpc_descriptor_srt) +
275 	     2*sizeof(struct scsi_vpd_tpc_descriptor_srtd) +
276 	    sizeof(struct scsi_vpd_tpc_descriptor_gco);
277 
278 	ctsio->kern_data_ptr = malloc(data_len, M_CTL, M_WAITOK | M_ZERO);
279 	tpc_ptr = (struct scsi_vpd_tpc *)ctsio->kern_data_ptr;
280 	ctsio->kern_sg_entries = 0;
281 
282 	if (data_len < alloc_len) {
283 		ctsio->residual = alloc_len - data_len;
284 		ctsio->kern_data_len = data_len;
285 		ctsio->kern_total_len = data_len;
286 	} else {
287 		ctsio->residual = 0;
288 		ctsio->kern_data_len = alloc_len;
289 		ctsio->kern_total_len = alloc_len;
290 	}
291 	ctsio->kern_data_resid = 0;
292 	ctsio->kern_rel_offset = 0;
293 	ctsio->kern_sg_entries = 0;
294 
295 	/*
296 	 * The control device is always connected.  The disk device, on the
297 	 * other hand, may not be online all the time.
298 	 */
299 	if (lun != NULL)
300 		tpc_ptr->device = (SID_QUAL_LU_CONNECTED << 5) |
301 				     lun->be_lun->lun_type;
302 	else
303 		tpc_ptr->device = (SID_QUAL_LU_OFFLINE << 5) | T_DIRECT;
304 	tpc_ptr->page_code = SVPD_SCSI_TPC;
305 	scsi_ulto2b(data_len - 4, tpc_ptr->page_length);
306 
307 	/* Block Device ROD Limits */
308 	d_ptr = (struct scsi_vpd_tpc_descriptor *)&tpc_ptr->descr[0];
309 	bdrl_ptr = (struct scsi_vpd_tpc_descriptor_bdrl *)d_ptr;
310 	scsi_ulto2b(SVPD_TPC_BDRL, bdrl_ptr->desc_type);
311 	scsi_ulto2b(sizeof(*bdrl_ptr) - 4, bdrl_ptr->desc_length);
312 	scsi_ulto2b(TPC_MAX_SEGS, bdrl_ptr->maximum_ranges);
313 	scsi_ulto4b(TPC_MAX_TOKEN_TIMEOUT,
314 	    bdrl_ptr->maximum_inactivity_timeout);
315 	scsi_ulto4b(TPC_DFL_TOKEN_TIMEOUT,
316 	    bdrl_ptr->default_inactivity_timeout);
317 	scsi_u64to8b(0, bdrl_ptr->maximum_token_transfer_size);
318 	scsi_u64to8b(0, bdrl_ptr->optimal_transfer_count);
319 
320 	/* Supported commands */
321 	d_ptr = (struct scsi_vpd_tpc_descriptor *)
322 	    (&d_ptr->parameters[0] + scsi_2btoul(d_ptr->desc_length));
323 	sc_ptr = (struct scsi_vpd_tpc_descriptor_sc *)d_ptr;
324 	scsi_ulto2b(SVPD_TPC_SC, sc_ptr->desc_type);
325 	sc_ptr->list_length = 2 * sizeof(*scd_ptr) + 11;
326 	scsi_ulto2b(roundup2(1 + sc_ptr->list_length, 4), sc_ptr->desc_length);
327 	scd_ptr = &sc_ptr->descr[0];
328 	scd_ptr->opcode = EXTENDED_COPY;
329 	scd_ptr->sa_length = 5;
330 	scd_ptr->supported_service_actions[0] = EC_EC_LID1;
331 	scd_ptr->supported_service_actions[1] = EC_EC_LID4;
332 	scd_ptr->supported_service_actions[2] = EC_PT;
333 	scd_ptr->supported_service_actions[3] = EC_WUT;
334 	scd_ptr->supported_service_actions[4] = EC_COA;
335 	scd_ptr = (struct scsi_vpd_tpc_descriptor_sc_descr *)
336 	    &scd_ptr->supported_service_actions[scd_ptr->sa_length];
337 	scd_ptr->opcode = RECEIVE_COPY_STATUS;
338 	scd_ptr->sa_length = 6;
339 	scd_ptr->supported_service_actions[0] = RCS_RCS_LID1;
340 	scd_ptr->supported_service_actions[1] = RCS_RCFD;
341 	scd_ptr->supported_service_actions[2] = RCS_RCS_LID4;
342 	scd_ptr->supported_service_actions[3] = RCS_RCOP;
343 	scd_ptr->supported_service_actions[4] = RCS_RRTI;
344 	scd_ptr->supported_service_actions[5] = RCS_RART;
345 
346 	/* Parameter data. */
347 	d_ptr = (struct scsi_vpd_tpc_descriptor *)
348 	    (&d_ptr->parameters[0] + scsi_2btoul(d_ptr->desc_length));
349 	pd_ptr = (struct scsi_vpd_tpc_descriptor_pd *)d_ptr;
350 	scsi_ulto2b(SVPD_TPC_PD, pd_ptr->desc_type);
351 	scsi_ulto2b(sizeof(*pd_ptr) - 4, pd_ptr->desc_length);
352 	scsi_ulto2b(TPC_MAX_CSCDS, pd_ptr->maximum_cscd_descriptor_count);
353 	scsi_ulto2b(TPC_MAX_SEGS, pd_ptr->maximum_segment_descriptor_count);
354 	scsi_ulto4b(TPC_MAX_LIST, pd_ptr->maximum_descriptor_list_length);
355 	scsi_ulto4b(TPC_MAX_INLINE, pd_ptr->maximum_inline_data_length);
356 
357 	/* Supported Descriptors */
358 	d_ptr = (struct scsi_vpd_tpc_descriptor *)
359 	    (&d_ptr->parameters[0] + scsi_2btoul(d_ptr->desc_length));
360 	sd_ptr = (struct scsi_vpd_tpc_descriptor_sd *)d_ptr;
361 	scsi_ulto2b(SVPD_TPC_SD, sd_ptr->desc_type);
362 	scsi_ulto2b(roundup2(sizeof(*sd_ptr) - 4 + 4, 4), sd_ptr->desc_length);
363 	sd_ptr->list_length = 4;
364 	sd_ptr->supported_descriptor_codes[0] = EC_SEG_B2B;
365 	sd_ptr->supported_descriptor_codes[1] = EC_SEG_VERIFY;
366 	sd_ptr->supported_descriptor_codes[2] = EC_SEG_REGISTER_KEY;
367 	sd_ptr->supported_descriptor_codes[3] = EC_CSCD_ID;
368 
369 	/* Supported CSCD Descriptor IDs */
370 	d_ptr = (struct scsi_vpd_tpc_descriptor *)
371 	    (&d_ptr->parameters[0] + scsi_2btoul(d_ptr->desc_length));
372 	sdid_ptr = (struct scsi_vpd_tpc_descriptor_sdid *)d_ptr;
373 	scsi_ulto2b(SVPD_TPC_SDID, sdid_ptr->desc_type);
374 	scsi_ulto2b(roundup2(sizeof(*sdid_ptr) - 4 + 2, 4), sdid_ptr->desc_length);
375 	scsi_ulto2b(2, sdid_ptr->list_length);
376 	scsi_ulto2b(0xffff, &sdid_ptr->supported_descriptor_ids[0]);
377 
378 	/* ROD Token Features */
379 	d_ptr = (struct scsi_vpd_tpc_descriptor *)
380 	    (&d_ptr->parameters[0] + scsi_2btoul(d_ptr->desc_length));
381 	rtf_ptr = (struct scsi_vpd_tpc_descriptor_rtf *)d_ptr;
382 	scsi_ulto2b(SVPD_TPC_RTF, rtf_ptr->desc_type);
383 	scsi_ulto2b(sizeof(*rtf_ptr) - 4 + sizeof(*rtfb_ptr), rtf_ptr->desc_length);
384 	rtf_ptr->remote_tokens = 0;
385 	scsi_ulto4b(TPC_MIN_TOKEN_TIMEOUT, rtf_ptr->minimum_token_lifetime);
386 	scsi_ulto4b(UINT32_MAX, rtf_ptr->maximum_token_lifetime);
387 	scsi_ulto4b(TPC_MAX_TOKEN_TIMEOUT,
388 	    rtf_ptr->maximum_token_inactivity_timeout);
389 	scsi_ulto2b(sizeof(*rtfb_ptr), rtf_ptr->type_specific_features_length);
390 	rtfb_ptr = (struct scsi_vpd_tpc_descriptor_rtf_block *)
391 	    &rtf_ptr->type_specific_features;
392 	rtfb_ptr->type_format = SVPD_TPC_RTF_BLOCK;
393 	scsi_ulto2b(sizeof(*rtfb_ptr) - 4, rtfb_ptr->desc_length);
394 	scsi_ulto2b(0, rtfb_ptr->optimal_length_granularity);
395 	scsi_u64to8b(0, rtfb_ptr->maximum_bytes);
396 	scsi_u64to8b(0, rtfb_ptr->optimal_bytes);
397 	scsi_u64to8b(UINT64_MAX, rtfb_ptr->optimal_bytes_to_token_per_segment);
398 	scsi_u64to8b(TPC_MAX_IOCHUNK_SIZE,
399 	    rtfb_ptr->optimal_bytes_from_token_per_segment);
400 
401 	/* Supported ROD Tokens */
402 	d_ptr = (struct scsi_vpd_tpc_descriptor *)
403 	    (&d_ptr->parameters[0] + scsi_2btoul(d_ptr->desc_length));
404 	srt_ptr = (struct scsi_vpd_tpc_descriptor_srt *)d_ptr;
405 	scsi_ulto2b(SVPD_TPC_SRT, srt_ptr->desc_type);
406 	scsi_ulto2b(sizeof(*srt_ptr) - 4 + 2*sizeof(*srtd_ptr), srt_ptr->desc_length);
407 	scsi_ulto2b(2*sizeof(*srtd_ptr), srt_ptr->rod_type_descriptors_length);
408 	srtd_ptr = (struct scsi_vpd_tpc_descriptor_srtd *)
409 	    &srt_ptr->rod_type_descriptors;
410 	scsi_ulto4b(ROD_TYPE_AUR, srtd_ptr->rod_type);
411 	srtd_ptr->flags = SVPD_TPC_SRTD_TIN | SVPD_TPC_SRTD_TOUT;
412 	scsi_ulto2b(0, srtd_ptr->preference_indicator);
413 	srtd_ptr++;
414 	scsi_ulto4b(ROD_TYPE_BLOCK_ZERO, srtd_ptr->rod_type);
415 	srtd_ptr->flags = SVPD_TPC_SRTD_TIN;
416 	scsi_ulto2b(0, srtd_ptr->preference_indicator);
417 
418 	/* General Copy Operations */
419 	d_ptr = (struct scsi_vpd_tpc_descriptor *)
420 	    (&d_ptr->parameters[0] + scsi_2btoul(d_ptr->desc_length));
421 	gco_ptr = (struct scsi_vpd_tpc_descriptor_gco *)d_ptr;
422 	scsi_ulto2b(SVPD_TPC_GCO, gco_ptr->desc_type);
423 	scsi_ulto2b(sizeof(*gco_ptr) - 4, gco_ptr->desc_length);
424 	scsi_ulto4b(TPC_MAX_LISTS, gco_ptr->total_concurrent_copies);
425 	scsi_ulto4b(TPC_MAX_LISTS, gco_ptr->maximum_identified_concurrent_copies);
426 	scsi_ulto4b(TPC_MAX_SEG, gco_ptr->maximum_segment_length);
427 	gco_ptr->data_segment_granularity = 0;
428 	gco_ptr->inline_data_granularity = 0;
429 
430 	ctl_set_success(ctsio);
431 	ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED;
432 	ctsio->be_move_done = ctl_config_move_done;
433 	ctl_datamove((union ctl_io *)ctsio);
434 
435 	return (CTL_RETVAL_COMPLETE);
436 }
437 
438 int
439 ctl_receive_copy_operating_parameters(struct ctl_scsiio *ctsio)
440 {
441 	struct scsi_receive_copy_operating_parameters *cdb;
442 	struct scsi_receive_copy_operating_parameters_data *data;
443 	int retval;
444 	int alloc_len, total_len;
445 
446 	CTL_DEBUG_PRINT(("ctl_report_supported_tmf\n"));
447 
448 	cdb = (struct scsi_receive_copy_operating_parameters *)ctsio->cdb;
449 
450 	retval = CTL_RETVAL_COMPLETE;
451 
452 	total_len = sizeof(*data) + 4;
453 	alloc_len = scsi_4btoul(cdb->length);
454 
455 	ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO);
456 
457 	ctsio->kern_sg_entries = 0;
458 
459 	if (total_len < alloc_len) {
460 		ctsio->residual = alloc_len - total_len;
461 		ctsio->kern_data_len = total_len;
462 		ctsio->kern_total_len = total_len;
463 	} else {
464 		ctsio->residual = 0;
465 		ctsio->kern_data_len = alloc_len;
466 		ctsio->kern_total_len = alloc_len;
467 	}
468 	ctsio->kern_data_resid = 0;
469 	ctsio->kern_rel_offset = 0;
470 
471 	data = (struct scsi_receive_copy_operating_parameters_data *)ctsio->kern_data_ptr;
472 	scsi_ulto4b(sizeof(*data) - 4 + 4, data->length);
473 	data->snlid = RCOP_SNLID;
474 	scsi_ulto2b(TPC_MAX_CSCDS, data->maximum_cscd_descriptor_count);
475 	scsi_ulto2b(TPC_MAX_SEGS, data->maximum_segment_descriptor_count);
476 	scsi_ulto4b(TPC_MAX_LIST, data->maximum_descriptor_list_length);
477 	scsi_ulto4b(TPC_MAX_SEG, data->maximum_segment_length);
478 	scsi_ulto4b(TPC_MAX_INLINE, data->maximum_inline_data_length);
479 	scsi_ulto4b(0, data->held_data_limit);
480 	scsi_ulto4b(0, data->maximum_stream_device_transfer_size);
481 	scsi_ulto2b(TPC_MAX_LISTS, data->total_concurrent_copies);
482 	data->maximum_concurrent_copies = TPC_MAX_LISTS;
483 	data->data_segment_granularity = 0;
484 	data->inline_data_granularity = 0;
485 	data->held_data_granularity = 0;
486 	data->implemented_descriptor_list_length = 4;
487 	data->list_of_implemented_descriptor_type_codes[0] = EC_SEG_B2B;
488 	data->list_of_implemented_descriptor_type_codes[1] = EC_SEG_VERIFY;
489 	data->list_of_implemented_descriptor_type_codes[2] = EC_SEG_REGISTER_KEY;
490 	data->list_of_implemented_descriptor_type_codes[3] = EC_CSCD_ID;
491 
492 	ctl_set_success(ctsio);
493 	ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED;
494 	ctsio->be_move_done = ctl_config_move_done;
495 	ctl_datamove((union ctl_io *)ctsio);
496 	return (retval);
497 }
498 
499 static struct tpc_list *
500 tpc_find_list(struct ctl_lun *lun, uint32_t list_id, uint32_t init_idx)
501 {
502 	struct tpc_list *list;
503 
504 	mtx_assert(&lun->lun_lock, MA_OWNED);
505 	TAILQ_FOREACH(list, &lun->tpc_lists, links) {
506 		if ((list->flags & EC_LIST_ID_USAGE_MASK) !=
507 		     EC_LIST_ID_USAGE_NONE && list->list_id == list_id &&
508 		    list->init_idx == init_idx)
509 			break;
510 	}
511 	return (list);
512 }
513 
514 int
515 ctl_receive_copy_status_lid1(struct ctl_scsiio *ctsio)
516 {
517 	struct ctl_lun *lun;
518 	struct scsi_receive_copy_status_lid1 *cdb;
519 	struct scsi_receive_copy_status_lid1_data *data;
520 	struct tpc_list *list;
521 	struct tpc_list list_copy;
522 	int retval;
523 	int alloc_len, total_len;
524 	uint32_t list_id;
525 
526 	CTL_DEBUG_PRINT(("ctl_receive_copy_status_lid1\n"));
527 
528 	cdb = (struct scsi_receive_copy_status_lid1 *)ctsio->cdb;
529 	lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
530 
531 	retval = CTL_RETVAL_COMPLETE;
532 
533 	list_id = cdb->list_identifier;
534 	mtx_lock(&lun->lun_lock);
535 	list = tpc_find_list(lun, list_id,
536 	    ctl_get_initindex(&ctsio->io_hdr.nexus));
537 	if (list == NULL) {
538 		mtx_unlock(&lun->lun_lock);
539 		ctl_set_invalid_field(ctsio, /*sks_valid*/ 1,
540 		    /*command*/ 1, /*field*/ 2, /*bit_valid*/ 0,
541 		    /*bit*/ 0);
542 		ctl_done((union ctl_io *)ctsio);
543 		return (retval);
544 	}
545 	list_copy = *list;
546 	if (list->completed) {
547 		TAILQ_REMOVE(&lun->tpc_lists, list, links);
548 		free(list, M_CTL);
549 	}
550 	mtx_unlock(&lun->lun_lock);
551 
552 	total_len = sizeof(*data);
553 	alloc_len = scsi_4btoul(cdb->length);
554 
555 	ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO);
556 
557 	ctsio->kern_sg_entries = 0;
558 
559 	if (total_len < alloc_len) {
560 		ctsio->residual = alloc_len - total_len;
561 		ctsio->kern_data_len = total_len;
562 		ctsio->kern_total_len = total_len;
563 	} else {
564 		ctsio->residual = 0;
565 		ctsio->kern_data_len = alloc_len;
566 		ctsio->kern_total_len = alloc_len;
567 	}
568 	ctsio->kern_data_resid = 0;
569 	ctsio->kern_rel_offset = 0;
570 
571 	data = (struct scsi_receive_copy_status_lid1_data *)ctsio->kern_data_ptr;
572 	scsi_ulto4b(sizeof(*data) - 4, data->available_data);
573 	if (list_copy.completed) {
574 		if (list_copy.error || list_copy.abort)
575 			data->copy_command_status = RCS_CCS_ERROR;
576 		else
577 			data->copy_command_status = RCS_CCS_COMPLETED;
578 	} else
579 		data->copy_command_status = RCS_CCS_INPROG;
580 	scsi_ulto2b(list_copy.curseg, data->segments_processed);
581 	if (list_copy.curbytes <= UINT32_MAX) {
582 		data->transfer_count_units = RCS_TC_BYTES;
583 		scsi_ulto4b(list_copy.curbytes, data->transfer_count);
584 	} else {
585 		data->transfer_count_units = RCS_TC_MBYTES;
586 		scsi_ulto4b(list_copy.curbytes >> 20, data->transfer_count);
587 	}
588 
589 	ctl_set_success(ctsio);
590 	ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED;
591 	ctsio->be_move_done = ctl_config_move_done;
592 	ctl_datamove((union ctl_io *)ctsio);
593 	return (retval);
594 }
595 
596 int
597 ctl_receive_copy_failure_details(struct ctl_scsiio *ctsio)
598 {
599 	struct ctl_lun *lun;
600 	struct scsi_receive_copy_failure_details *cdb;
601 	struct scsi_receive_copy_failure_details_data *data;
602 	struct tpc_list *list;
603 	struct tpc_list list_copy;
604 	int retval;
605 	int alloc_len, total_len;
606 	uint32_t list_id;
607 
608 	CTL_DEBUG_PRINT(("ctl_receive_copy_failure_details\n"));
609 
610 	cdb = (struct scsi_receive_copy_failure_details *)ctsio->cdb;
611 	lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
612 
613 	retval = CTL_RETVAL_COMPLETE;
614 
615 	list_id = cdb->list_identifier;
616 	mtx_lock(&lun->lun_lock);
617 	list = tpc_find_list(lun, list_id,
618 	    ctl_get_initindex(&ctsio->io_hdr.nexus));
619 	if (list == NULL || !list->completed) {
620 		mtx_unlock(&lun->lun_lock);
621 		ctl_set_invalid_field(ctsio, /*sks_valid*/ 1,
622 		    /*command*/ 1, /*field*/ 2, /*bit_valid*/ 0,
623 		    /*bit*/ 0);
624 		ctl_done((union ctl_io *)ctsio);
625 		return (retval);
626 	}
627 	list_copy = *list;
628 	TAILQ_REMOVE(&lun->tpc_lists, list, links);
629 	free(list, M_CTL);
630 	mtx_unlock(&lun->lun_lock);
631 
632 	total_len = sizeof(*data) + list_copy.sense_len;
633 	alloc_len = scsi_4btoul(cdb->length);
634 
635 	ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO);
636 
637 	ctsio->kern_sg_entries = 0;
638 
639 	if (total_len < alloc_len) {
640 		ctsio->residual = alloc_len - total_len;
641 		ctsio->kern_data_len = total_len;
642 		ctsio->kern_total_len = total_len;
643 	} else {
644 		ctsio->residual = 0;
645 		ctsio->kern_data_len = alloc_len;
646 		ctsio->kern_total_len = alloc_len;
647 	}
648 	ctsio->kern_data_resid = 0;
649 	ctsio->kern_rel_offset = 0;
650 
651 	data = (struct scsi_receive_copy_failure_details_data *)ctsio->kern_data_ptr;
652 	if (list_copy.completed && (list_copy.error || list_copy.abort)) {
653 		scsi_ulto4b(sizeof(*data) - 4 + list_copy.sense_len,
654 		    data->available_data);
655 		data->copy_command_status = RCS_CCS_ERROR;
656 	} else
657 		scsi_ulto4b(0, data->available_data);
658 	scsi_ulto2b(list_copy.sense_len, data->sense_data_length);
659 	memcpy(data->sense_data, &list_copy.sense_data, list_copy.sense_len);
660 
661 	ctl_set_success(ctsio);
662 	ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED;
663 	ctsio->be_move_done = ctl_config_move_done;
664 	ctl_datamove((union ctl_io *)ctsio);
665 	return (retval);
666 }
667 
668 int
669 ctl_receive_copy_status_lid4(struct ctl_scsiio *ctsio)
670 {
671 	struct ctl_lun *lun;
672 	struct scsi_receive_copy_status_lid4 *cdb;
673 	struct scsi_receive_copy_status_lid4_data *data;
674 	struct tpc_list *list;
675 	struct tpc_list list_copy;
676 	int retval;
677 	int alloc_len, total_len;
678 	uint32_t list_id;
679 
680 	CTL_DEBUG_PRINT(("ctl_receive_copy_status_lid4\n"));
681 
682 	cdb = (struct scsi_receive_copy_status_lid4 *)ctsio->cdb;
683 	lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
684 
685 	retval = CTL_RETVAL_COMPLETE;
686 
687 	list_id = scsi_4btoul(cdb->list_identifier);
688 	mtx_lock(&lun->lun_lock);
689 	list = tpc_find_list(lun, list_id,
690 	    ctl_get_initindex(&ctsio->io_hdr.nexus));
691 	if (list == NULL) {
692 		mtx_unlock(&lun->lun_lock);
693 		ctl_set_invalid_field(ctsio, /*sks_valid*/ 1,
694 		    /*command*/ 1, /*field*/ 2, /*bit_valid*/ 0,
695 		    /*bit*/ 0);
696 		ctl_done((union ctl_io *)ctsio);
697 		return (retval);
698 	}
699 	list_copy = *list;
700 	if (list->completed) {
701 		TAILQ_REMOVE(&lun->tpc_lists, list, links);
702 		free(list, M_CTL);
703 	}
704 	mtx_unlock(&lun->lun_lock);
705 
706 	total_len = sizeof(*data) + list_copy.sense_len;
707 	alloc_len = scsi_4btoul(cdb->length);
708 
709 	ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO);
710 
711 	ctsio->kern_sg_entries = 0;
712 
713 	if (total_len < alloc_len) {
714 		ctsio->residual = alloc_len - total_len;
715 		ctsio->kern_data_len = total_len;
716 		ctsio->kern_total_len = total_len;
717 	} else {
718 		ctsio->residual = 0;
719 		ctsio->kern_data_len = alloc_len;
720 		ctsio->kern_total_len = alloc_len;
721 	}
722 	ctsio->kern_data_resid = 0;
723 	ctsio->kern_rel_offset = 0;
724 
725 	data = (struct scsi_receive_copy_status_lid4_data *)ctsio->kern_data_ptr;
726 	scsi_ulto4b(sizeof(*data) - 4 + list_copy.sense_len,
727 	    data->available_data);
728 	data->response_to_service_action = list_copy.service_action;
729 	if (list_copy.completed) {
730 		if (list_copy.error)
731 			data->copy_command_status = RCS_CCS_ERROR;
732 		else if (list_copy.abort)
733 			data->copy_command_status = RCS_CCS_ABORTED;
734 		else
735 			data->copy_command_status = RCS_CCS_COMPLETED;
736 	} else
737 		data->copy_command_status = RCS_CCS_INPROG_FG;
738 	scsi_ulto2b(list_copy.curops, data->operation_counter);
739 	scsi_ulto4b(UINT32_MAX, data->estimated_status_update_delay);
740 	data->transfer_count_units = RCS_TC_BYTES;
741 	scsi_u64to8b(list_copy.curbytes, data->transfer_count);
742 	scsi_ulto2b(list_copy.curseg, data->segments_processed);
743 	data->length_of_the_sense_data_field = list_copy.sense_len;
744 	data->sense_data_length = list_copy.sense_len;
745 	memcpy(data->sense_data, &list_copy.sense_data, list_copy.sense_len);
746 
747 	ctl_set_success(ctsio);
748 	ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED;
749 	ctsio->be_move_done = ctl_config_move_done;
750 	ctl_datamove((union ctl_io *)ctsio);
751 	return (retval);
752 }
753 
754 int
755 ctl_copy_operation_abort(struct ctl_scsiio *ctsio)
756 {
757 	struct ctl_lun *lun;
758 	struct scsi_copy_operation_abort *cdb;
759 	struct tpc_list *list;
760 	int retval;
761 	uint32_t list_id;
762 
763 	CTL_DEBUG_PRINT(("ctl_copy_operation_abort\n"));
764 
765 	cdb = (struct scsi_copy_operation_abort *)ctsio->cdb;
766 	lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
767 
768 	retval = CTL_RETVAL_COMPLETE;
769 
770 	list_id = scsi_4btoul(cdb->list_identifier);
771 	mtx_lock(&lun->lun_lock);
772 	list = tpc_find_list(lun, list_id,
773 	    ctl_get_initindex(&ctsio->io_hdr.nexus));
774 	if (list == NULL) {
775 		mtx_unlock(&lun->lun_lock);
776 		ctl_set_invalid_field(ctsio, /*sks_valid*/ 1,
777 		    /*command*/ 1, /*field*/ 2, /*bit_valid*/ 0,
778 		    /*bit*/ 0);
779 		ctl_done((union ctl_io *)ctsio);
780 		return (retval);
781 	}
782 	list->abort = 1;
783 	mtx_unlock(&lun->lun_lock);
784 
785 	ctl_set_success(ctsio);
786 	ctl_done((union ctl_io *)ctsio);
787 	return (retval);
788 }
789 
790 static uint64_t
791 tpc_resolve(struct tpc_list *list, uint16_t idx, uint32_t *ss,
792     uint32_t *pb, uint32_t *pbo)
793 {
794 
795 	if (idx == 0xffff) {
796 		if (ss && list->lun->be_lun)
797 			*ss = list->lun->be_lun->blocksize;
798 		if (pb && list->lun->be_lun)
799 			*pb = list->lun->be_lun->blocksize <<
800 			    list->lun->be_lun->pblockexp;
801 		if (pbo && list->lun->be_lun)
802 			*pbo = list->lun->be_lun->blocksize *
803 			    list->lun->be_lun->pblockoff;
804 		return (list->lun->lun);
805 	}
806 	if (idx >= list->ncscd)
807 		return (UINT64_MAX);
808 	return (tpcl_resolve(list->lun->ctl_softc,
809 	    list->init_port, &list->cscd[idx], ss, pb, pbo));
810 }
811 
812 static int
813 tpc_process_b2b(struct tpc_list *list)
814 {
815 	struct scsi_ec_segment_b2b *seg;
816 	struct scsi_ec_cscd_dtsp *sdstp, *ddstp;
817 	struct tpc_io *tior, *tiow;
818 	struct runl run;
819 	uint64_t sl, dl;
820 	off_t srclba, dstlba, numbytes, donebytes, roundbytes;
821 	int numlba;
822 	uint32_t srcblock, dstblock, pb, pbo, adj;
823 	uint8_t csi[4];
824 
825 	scsi_ulto4b(list->curseg, csi);
826 	if (list->stage == 1) {
827 		while ((tior = TAILQ_FIRST(&list->allio)) != NULL) {
828 			TAILQ_REMOVE(&list->allio, tior, links);
829 			ctl_free_io(tior->io);
830 			free(tior, M_CTL);
831 		}
832 		free(list->buf, M_CTL);
833 		if (list->abort) {
834 			ctl_set_task_aborted(list->ctsio);
835 			return (CTL_RETVAL_ERROR);
836 		} else if (list->error) {
837 			ctl_set_sense(list->ctsio, /*current_error*/ 1,
838 			    /*sense_key*/ SSD_KEY_COPY_ABORTED,
839 			    /*asc*/ 0x0d, /*ascq*/ 0x01,
840 			    SSD_ELEM_COMMAND, sizeof(csi), csi,
841 			    SSD_ELEM_NONE);
842 			return (CTL_RETVAL_ERROR);
843 		}
844 		list->cursectors += list->segsectors;
845 		list->curbytes += list->segbytes;
846 		return (CTL_RETVAL_COMPLETE);
847 	}
848 
849 	TAILQ_INIT(&list->allio);
850 	seg = (struct scsi_ec_segment_b2b *)list->seg[list->curseg];
851 	sl = tpc_resolve(list, scsi_2btoul(seg->src_cscd), &srcblock, NULL, NULL);
852 	dl = tpc_resolve(list, scsi_2btoul(seg->dst_cscd), &dstblock, &pb, &pbo);
853 	if (sl >= CTL_MAX_LUNS || dl >= CTL_MAX_LUNS) {
854 		ctl_set_sense(list->ctsio, /*current_error*/ 1,
855 		    /*sense_key*/ SSD_KEY_COPY_ABORTED,
856 		    /*asc*/ 0x08, /*ascq*/ 0x04,
857 		    SSD_ELEM_COMMAND, sizeof(csi), csi,
858 		    SSD_ELEM_NONE);
859 		return (CTL_RETVAL_ERROR);
860 	}
861 	if (pbo > 0)
862 		pbo = pb - pbo;
863 	sdstp = &list->cscd[scsi_2btoul(seg->src_cscd)].dtsp;
864 	if (scsi_3btoul(sdstp->block_length) != 0)
865 		srcblock = scsi_3btoul(sdstp->block_length);
866 	ddstp = &list->cscd[scsi_2btoul(seg->dst_cscd)].dtsp;
867 	if (scsi_3btoul(ddstp->block_length) != 0)
868 		dstblock = scsi_3btoul(ddstp->block_length);
869 	numlba = scsi_2btoul(seg->number_of_blocks);
870 	if (seg->flags & EC_SEG_DC)
871 		numbytes = (off_t)numlba * dstblock;
872 	else
873 		numbytes = (off_t)numlba * srcblock;
874 	srclba = scsi_8btou64(seg->src_lba);
875 	dstlba = scsi_8btou64(seg->dst_lba);
876 
877 //	printf("Copy %ju bytes from %ju @ %ju to %ju @ %ju\n",
878 //	    (uintmax_t)numbytes, sl, scsi_8btou64(seg->src_lba),
879 //	    dl, scsi_8btou64(seg->dst_lba));
880 
881 	if (numbytes == 0)
882 		return (CTL_RETVAL_COMPLETE);
883 
884 	if (numbytes % srcblock != 0 || numbytes % dstblock != 0) {
885 		ctl_set_sense(list->ctsio, /*current_error*/ 1,
886 		    /*sense_key*/ SSD_KEY_COPY_ABORTED,
887 		    /*asc*/ 0x26, /*ascq*/ 0x0A,
888 		    SSD_ELEM_COMMAND, sizeof(csi), csi,
889 		    SSD_ELEM_NONE);
890 		return (CTL_RETVAL_ERROR);
891 	}
892 
893 	list->buf = malloc(numbytes, M_CTL, M_WAITOK);
894 	list->segbytes = numbytes;
895 	list->segsectors = numbytes / dstblock;
896 	donebytes = 0;
897 	TAILQ_INIT(&run);
898 	list->tbdio = 0;
899 	while (donebytes < numbytes) {
900 		roundbytes = numbytes - donebytes;
901 		if (roundbytes > TPC_MAX_IO_SIZE) {
902 			roundbytes = TPC_MAX_IO_SIZE;
903 			roundbytes -= roundbytes % dstblock;
904 			if (pb > dstblock) {
905 				adj = (dstlba * dstblock + roundbytes - pbo) % pb;
906 				if (roundbytes > adj)
907 					roundbytes -= adj;
908 			}
909 		}
910 
911 		tior = malloc(sizeof(*tior), M_CTL, M_WAITOK | M_ZERO);
912 		TAILQ_INIT(&tior->run);
913 		tior->list = list;
914 		TAILQ_INSERT_TAIL(&list->allio, tior, links);
915 		tior->io = tpcl_alloc_io();
916 		ctl_scsi_read_write(tior->io,
917 				    /*data_ptr*/ &list->buf[donebytes],
918 				    /*data_len*/ roundbytes,
919 				    /*read_op*/ 1,
920 				    /*byte2*/ 0,
921 				    /*minimum_cdb_size*/ 0,
922 				    /*lba*/ srclba,
923 				    /*num_blocks*/ roundbytes / srcblock,
924 				    /*tag_type*/ CTL_TAG_SIMPLE,
925 				    /*control*/ 0);
926 		tior->io->io_hdr.retries = 3;
927 		tior->lun = sl;
928 		tior->io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = tior;
929 
930 		tiow = malloc(sizeof(*tior), M_CTL, M_WAITOK | M_ZERO);
931 		TAILQ_INIT(&tiow->run);
932 		tiow->list = list;
933 		TAILQ_INSERT_TAIL(&list->allio, tiow, links);
934 		tiow->io = tpcl_alloc_io();
935 		ctl_scsi_read_write(tiow->io,
936 				    /*data_ptr*/ &list->buf[donebytes],
937 				    /*data_len*/ roundbytes,
938 				    /*read_op*/ 0,
939 				    /*byte2*/ 0,
940 				    /*minimum_cdb_size*/ 0,
941 				    /*lba*/ dstlba,
942 				    /*num_blocks*/ roundbytes / dstblock,
943 				    /*tag_type*/ CTL_TAG_SIMPLE,
944 				    /*control*/ 0);
945 		tiow->io->io_hdr.retries = 3;
946 		tiow->lun = dl;
947 		tiow->io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = tiow;
948 
949 		TAILQ_INSERT_TAIL(&tior->run, tiow, rlinks);
950 		TAILQ_INSERT_TAIL(&run, tior, rlinks);
951 		list->tbdio++;
952 		donebytes += roundbytes;
953 		srclba += roundbytes / srcblock;
954 		dstlba += roundbytes / dstblock;
955 	}
956 
957 	while ((tior = TAILQ_FIRST(&run)) != NULL) {
958 		TAILQ_REMOVE(&run, tior, rlinks);
959 		if (tpcl_queue(tior->io, tior->lun) != CTL_RETVAL_COMPLETE)
960 			panic("tpcl_queue() error");
961 	}
962 
963 	list->stage++;
964 	return (CTL_RETVAL_QUEUED);
965 }
966 
967 static int
968 tpc_process_verify(struct tpc_list *list)
969 {
970 	struct scsi_ec_segment_verify *seg;
971 	struct tpc_io *tio;
972 	uint64_t sl;
973 	uint8_t csi[4];
974 
975 	scsi_ulto4b(list->curseg, csi);
976 	if (list->stage == 1) {
977 		while ((tio = TAILQ_FIRST(&list->allio)) != NULL) {
978 			TAILQ_REMOVE(&list->allio, tio, links);
979 			ctl_free_io(tio->io);
980 			free(tio, M_CTL);
981 		}
982 		if (list->abort) {
983 			ctl_set_task_aborted(list->ctsio);
984 			return (CTL_RETVAL_ERROR);
985 		} else if (list->error) {
986 			ctl_set_sense(list->ctsio, /*current_error*/ 1,
987 			    /*sense_key*/ SSD_KEY_COPY_ABORTED,
988 			    /*asc*/ 0x0d, /*ascq*/ 0x01,
989 			    SSD_ELEM_COMMAND, sizeof(csi), csi,
990 			    SSD_ELEM_NONE);
991 			return (CTL_RETVAL_ERROR);
992 		} else
993 			return (CTL_RETVAL_COMPLETE);
994 	}
995 
996 	TAILQ_INIT(&list->allio);
997 	seg = (struct scsi_ec_segment_verify *)list->seg[list->curseg];
998 	sl = tpc_resolve(list, scsi_2btoul(seg->src_cscd), NULL, NULL, NULL);
999 	if (sl >= CTL_MAX_LUNS) {
1000 		ctl_set_sense(list->ctsio, /*current_error*/ 1,
1001 		    /*sense_key*/ SSD_KEY_COPY_ABORTED,
1002 		    /*asc*/ 0x08, /*ascq*/ 0x04,
1003 		    SSD_ELEM_COMMAND, sizeof(csi), csi,
1004 		    SSD_ELEM_NONE);
1005 		return (CTL_RETVAL_ERROR);
1006 	}
1007 
1008 //	printf("Verify %ju\n", sl);
1009 
1010 	if ((seg->tur & 0x01) == 0)
1011 		return (CTL_RETVAL_COMPLETE);
1012 
1013 	list->tbdio = 1;
1014 	tio = malloc(sizeof(*tio), M_CTL, M_WAITOK | M_ZERO);
1015 	TAILQ_INIT(&tio->run);
1016 	tio->list = list;
1017 	TAILQ_INSERT_TAIL(&list->allio, tio, links);
1018 	tio->io = tpcl_alloc_io();
1019 	ctl_scsi_tur(tio->io, /*tag_type*/ CTL_TAG_SIMPLE, /*control*/ 0);
1020 	tio->io->io_hdr.retries = 3;
1021 	tio->lun = sl;
1022 	tio->io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = tio;
1023 	list->stage++;
1024 	if (tpcl_queue(tio->io, tio->lun) != CTL_RETVAL_COMPLETE)
1025 		panic("tpcl_queue() error");
1026 	return (CTL_RETVAL_QUEUED);
1027 }
1028 
1029 static int
1030 tpc_process_register_key(struct tpc_list *list)
1031 {
1032 	struct scsi_ec_segment_register_key *seg;
1033 	struct tpc_io *tio;
1034 	uint64_t dl;
1035 	int datalen;
1036 	uint8_t csi[4];
1037 
1038 	scsi_ulto4b(list->curseg, csi);
1039 	if (list->stage == 1) {
1040 		while ((tio = TAILQ_FIRST(&list->allio)) != NULL) {
1041 			TAILQ_REMOVE(&list->allio, tio, links);
1042 			ctl_free_io(tio->io);
1043 			free(tio, M_CTL);
1044 		}
1045 		free(list->buf, M_CTL);
1046 		if (list->abort) {
1047 			ctl_set_task_aborted(list->ctsio);
1048 			return (CTL_RETVAL_ERROR);
1049 		} else if (list->error) {
1050 			ctl_set_sense(list->ctsio, /*current_error*/ 1,
1051 			    /*sense_key*/ SSD_KEY_COPY_ABORTED,
1052 			    /*asc*/ 0x0d, /*ascq*/ 0x01,
1053 			    SSD_ELEM_COMMAND, sizeof(csi), csi,
1054 			    SSD_ELEM_NONE);
1055 			return (CTL_RETVAL_ERROR);
1056 		} else
1057 			return (CTL_RETVAL_COMPLETE);
1058 	}
1059 
1060 	TAILQ_INIT(&list->allio);
1061 	seg = (struct scsi_ec_segment_register_key *)list->seg[list->curseg];
1062 	dl = tpc_resolve(list, scsi_2btoul(seg->dst_cscd), NULL, NULL, NULL);
1063 	if (dl >= CTL_MAX_LUNS) {
1064 		ctl_set_sense(list->ctsio, /*current_error*/ 1,
1065 		    /*sense_key*/ SSD_KEY_COPY_ABORTED,
1066 		    /*asc*/ 0x08, /*ascq*/ 0x04,
1067 		    SSD_ELEM_COMMAND, sizeof(csi), csi,
1068 		    SSD_ELEM_NONE);
1069 		return (CTL_RETVAL_ERROR);
1070 	}
1071 
1072 //	printf("Register Key %ju\n", dl);
1073 
1074 	list->tbdio = 1;
1075 	tio = malloc(sizeof(*tio), M_CTL, M_WAITOK | M_ZERO);
1076 	TAILQ_INIT(&tio->run);
1077 	tio->list = list;
1078 	TAILQ_INSERT_TAIL(&list->allio, tio, links);
1079 	tio->io = tpcl_alloc_io();
1080 	datalen = sizeof(struct scsi_per_res_out_parms);
1081 	list->buf = malloc(datalen, M_CTL, M_WAITOK);
1082 	ctl_scsi_persistent_res_out(tio->io,
1083 	    list->buf, datalen, SPRO_REGISTER, -1,
1084 	    scsi_8btou64(seg->res_key), scsi_8btou64(seg->sa_res_key),
1085 	    /*tag_type*/ CTL_TAG_SIMPLE, /*control*/ 0);
1086 	tio->io->io_hdr.retries = 3;
1087 	tio->lun = dl;
1088 	tio->io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = tio;
1089 	list->stage++;
1090 	if (tpcl_queue(tio->io, tio->lun) != CTL_RETVAL_COMPLETE)
1091 		panic("tpcl_queue() error");
1092 	return (CTL_RETVAL_QUEUED);
1093 }
1094 
1095 static off_t
1096 tpc_ranges_length(struct scsi_range_desc *range, int nrange)
1097 {
1098 	off_t length = 0;
1099 	int r;
1100 
1101 	for (r = 0; r < nrange; r++)
1102 		length += scsi_4btoul(range[r].length);
1103 	return (length);
1104 }
1105 
1106 static int
1107 tpc_skip_ranges(struct scsi_range_desc *range, int nrange, off_t skip,
1108     int *srange, off_t *soffset)
1109 {
1110 	off_t off;
1111 	int r;
1112 
1113 	r = 0;
1114 	off = 0;
1115 	while (r < nrange) {
1116 		if (skip - off < scsi_4btoul(range[r].length)) {
1117 			*srange = r;
1118 			*soffset = skip - off;
1119 			return (0);
1120 		}
1121 		off += scsi_4btoul(range[r].length);
1122 		r++;
1123 	}
1124 	return (-1);
1125 }
1126 
1127 static int
1128 tpc_process_wut(struct tpc_list *list)
1129 {
1130 	struct tpc_io *tio, *tior, *tiow;
1131 	struct runl run, *prun;
1132 	int drange, srange;
1133 	off_t doffset, soffset;
1134 	off_t srclba, dstlba, numbytes, donebytes, roundbytes;
1135 	uint32_t srcblock, dstblock, pb, pbo, adj;
1136 
1137 	if (list->stage > 0) {
1138 		/* Cleanup after previous rounds. */
1139 		while ((tio = TAILQ_FIRST(&list->allio)) != NULL) {
1140 			TAILQ_REMOVE(&list->allio, tio, links);
1141 			ctl_free_io(tio->io);
1142 			free(tio, M_CTL);
1143 		}
1144 		free(list->buf, M_CTL);
1145 		if (list->abort) {
1146 			ctl_set_task_aborted(list->ctsio);
1147 			return (CTL_RETVAL_ERROR);
1148 		} else if (list->error) {
1149 			ctl_set_sense(list->ctsio, /*current_error*/ 1,
1150 			    /*sense_key*/ SSD_KEY_COPY_ABORTED,
1151 			    /*asc*/ 0x0d, /*ascq*/ 0x01, SSD_ELEM_NONE);
1152 			return (CTL_RETVAL_ERROR);
1153 		}
1154 		list->cursectors += list->segsectors;
1155 		list->curbytes += list->segbytes;
1156 	}
1157 
1158 	/* Check where we are on destination ranges list. */
1159 	if (tpc_skip_ranges(list->range, list->nrange, list->cursectors,
1160 	    &drange, &doffset) != 0)
1161 		return (CTL_RETVAL_COMPLETE);
1162 	dstblock = list->lun->be_lun->blocksize;
1163 	pb = dstblock << list->lun->be_lun->pblockexp;
1164 	if (list->lun->be_lun->pblockoff > 0)
1165 		pbo = pb - dstblock * list->lun->be_lun->pblockoff;
1166 	else
1167 		pbo = 0;
1168 
1169 	/* Check where we are on source ranges list. */
1170 	srcblock = list->token->blocksize;
1171 	if (tpc_skip_ranges(list->token->range, list->token->nrange,
1172 	    list->offset_into_rod + list->cursectors * dstblock / srcblock,
1173 	    &srange, &soffset) != 0) {
1174 		ctl_set_sense(list->ctsio, /*current_error*/ 1,
1175 		    /*sense_key*/ SSD_KEY_COPY_ABORTED,
1176 		    /*asc*/ 0x0d, /*ascq*/ 0x04, SSD_ELEM_NONE);
1177 		return (CTL_RETVAL_ERROR);
1178 	}
1179 
1180 	srclba = scsi_8btou64(list->token->range[srange].lba) + soffset;
1181 	dstlba = scsi_8btou64(list->range[drange].lba) + doffset;
1182 	numbytes = srcblock *
1183 	    (scsi_4btoul(list->token->range[srange].length) - soffset);
1184 	numbytes = omin(numbytes, dstblock *
1185 	    (scsi_4btoul(list->range[drange].length) - doffset));
1186 	if (numbytes > TPC_MAX_IOCHUNK_SIZE) {
1187 		numbytes = TPC_MAX_IOCHUNK_SIZE;
1188 		numbytes -= numbytes % dstblock;
1189 		if (pb > dstblock) {
1190 			adj = (dstlba * dstblock + numbytes - pbo) % pb;
1191 			if (numbytes > adj)
1192 				numbytes -= adj;
1193 		}
1194 	}
1195 
1196 	if (numbytes % srcblock != 0 || numbytes % dstblock != 0) {
1197 		ctl_set_sense(list->ctsio, /*current_error*/ 1,
1198 		    /*sense_key*/ SSD_KEY_COPY_ABORTED,
1199 		    /*asc*/ 0x26, /*ascq*/ 0x0A, SSD_ELEM_NONE);
1200 		return (CTL_RETVAL_ERROR);
1201 	}
1202 
1203 	list->buf = malloc(numbytes, M_CTL, M_WAITOK |
1204 	    (list->token == NULL ? M_ZERO : 0));
1205 	list->segbytes = numbytes;
1206 	list->segsectors = numbytes / dstblock;
1207 //printf("Copy chunk of %ju sectors from %ju to %ju\n", list->segsectors,
1208 //    srclba, dstlba);
1209 	donebytes = 0;
1210 	TAILQ_INIT(&run);
1211 	prun = &run;
1212 	list->tbdio = 1;
1213 	TAILQ_INIT(&list->allio);
1214 	while (donebytes < numbytes) {
1215 		roundbytes = numbytes - donebytes;
1216 		if (roundbytes > TPC_MAX_IO_SIZE) {
1217 			roundbytes = TPC_MAX_IO_SIZE;
1218 			roundbytes -= roundbytes % dstblock;
1219 			if (pb > dstblock) {
1220 				adj = (dstlba * dstblock + roundbytes - pbo) % pb;
1221 				if (roundbytes > adj)
1222 					roundbytes -= adj;
1223 			}
1224 		}
1225 
1226 		tior = malloc(sizeof(*tior), M_CTL, M_WAITOK | M_ZERO);
1227 		TAILQ_INIT(&tior->run);
1228 		tior->list = list;
1229 		TAILQ_INSERT_TAIL(&list->allio, tior, links);
1230 		tior->io = tpcl_alloc_io();
1231 		ctl_scsi_read_write(tior->io,
1232 				    /*data_ptr*/ &list->buf[donebytes],
1233 				    /*data_len*/ roundbytes,
1234 				    /*read_op*/ 1,
1235 				    /*byte2*/ 0,
1236 				    /*minimum_cdb_size*/ 0,
1237 				    /*lba*/ srclba,
1238 				    /*num_blocks*/ roundbytes / srcblock,
1239 				    /*tag_type*/ CTL_TAG_SIMPLE,
1240 				    /*control*/ 0);
1241 		tior->io->io_hdr.retries = 3;
1242 		tior->lun = list->token->lun;
1243 		tior->io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = tior;
1244 
1245 		tiow = malloc(sizeof(*tiow), M_CTL, M_WAITOK | M_ZERO);
1246 		TAILQ_INIT(&tiow->run);
1247 		tiow->list = list;
1248 		TAILQ_INSERT_TAIL(&list->allio, tiow, links);
1249 		tiow->io = tpcl_alloc_io();
1250 		ctl_scsi_read_write(tiow->io,
1251 				    /*data_ptr*/ &list->buf[donebytes],
1252 				    /*data_len*/ roundbytes,
1253 				    /*read_op*/ 0,
1254 				    /*byte2*/ 0,
1255 				    /*minimum_cdb_size*/ 0,
1256 				    /*lba*/ dstlba,
1257 				    /*num_blocks*/ roundbytes / dstblock,
1258 				    /*tag_type*/ CTL_TAG_SIMPLE,
1259 				    /*control*/ 0);
1260 		tiow->io->io_hdr.retries = 3;
1261 		tiow->lun = list->lun->lun;
1262 		tiow->io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = tiow;
1263 
1264 		TAILQ_INSERT_TAIL(&tior->run, tiow, rlinks);
1265 		TAILQ_INSERT_TAIL(prun, tior, rlinks);
1266 		prun = &tior->run;
1267 		donebytes += roundbytes;
1268 		srclba += roundbytes / srcblock;
1269 		dstlba += roundbytes / dstblock;
1270 	}
1271 
1272 	while ((tior = TAILQ_FIRST(&run)) != NULL) {
1273 		TAILQ_REMOVE(&run, tior, rlinks);
1274 		if (tpcl_queue(tior->io, tior->lun) != CTL_RETVAL_COMPLETE)
1275 			panic("tpcl_queue() error");
1276 	}
1277 
1278 	list->stage++;
1279 	return (CTL_RETVAL_QUEUED);
1280 }
1281 
1282 static int
1283 tpc_process_zero_wut(struct tpc_list *list)
1284 {
1285 	struct tpc_io *tio, *tiow;
1286 	struct runl run, *prun;
1287 	int r;
1288 	uint32_t dstblock, len;
1289 
1290 	if (list->stage > 0) {
1291 complete:
1292 		/* Cleanup after previous rounds. */
1293 		while ((tio = TAILQ_FIRST(&list->allio)) != NULL) {
1294 			TAILQ_REMOVE(&list->allio, tio, links);
1295 			ctl_free_io(tio->io);
1296 			free(tio, M_CTL);
1297 		}
1298 		if (list->abort) {
1299 			ctl_set_task_aborted(list->ctsio);
1300 			return (CTL_RETVAL_ERROR);
1301 		} else if (list->error) {
1302 			ctl_set_sense(list->ctsio, /*current_error*/ 1,
1303 			    /*sense_key*/ SSD_KEY_COPY_ABORTED,
1304 			    /*asc*/ 0x0d, /*ascq*/ 0x01, SSD_ELEM_NONE);
1305 			return (CTL_RETVAL_ERROR);
1306 		}
1307 		list->cursectors += list->segsectors;
1308 		list->curbytes += list->segbytes;
1309 		return (CTL_RETVAL_COMPLETE);
1310 	}
1311 
1312 	dstblock = list->lun->be_lun->blocksize;
1313 	TAILQ_INIT(&run);
1314 	prun = &run;
1315 	list->tbdio = 1;
1316 	TAILQ_INIT(&list->allio);
1317 	list->segsectors = 0;
1318 	for (r = 0; r < list->nrange; r++) {
1319 		len = scsi_4btoul(list->range[r].length);
1320 		if (len == 0)
1321 			continue;
1322 
1323 		tiow = malloc(sizeof(*tiow), M_CTL, M_WAITOK | M_ZERO);
1324 		TAILQ_INIT(&tiow->run);
1325 		tiow->list = list;
1326 		TAILQ_INSERT_TAIL(&list->allio, tiow, links);
1327 		tiow->io = tpcl_alloc_io();
1328 		ctl_scsi_write_same(tiow->io,
1329 				    /*data_ptr*/ NULL,
1330 				    /*data_len*/ 0,
1331 				    /*byte2*/ SWS_NDOB,
1332 				    /*lba*/ scsi_8btou64(list->range[r].lba),
1333 				    /*num_blocks*/ len,
1334 				    /*tag_type*/ CTL_TAG_SIMPLE,
1335 				    /*control*/ 0);
1336 		tiow->io->io_hdr.retries = 3;
1337 		tiow->lun = list->lun->lun;
1338 		tiow->io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr = tiow;
1339 
1340 		TAILQ_INSERT_TAIL(prun, tiow, rlinks);
1341 		prun = &tiow->run;
1342 		list->segsectors += len;
1343 	}
1344 	list->segbytes = list->segsectors * dstblock;
1345 
1346 	if (TAILQ_EMPTY(&run))
1347 		goto complete;
1348 
1349 	while ((tiow = TAILQ_FIRST(&run)) != NULL) {
1350 		TAILQ_REMOVE(&run, tiow, rlinks);
1351 		if (tpcl_queue(tiow->io, tiow->lun) != CTL_RETVAL_COMPLETE)
1352 			panic("tpcl_queue() error");
1353 	}
1354 
1355 	list->stage++;
1356 	return (CTL_RETVAL_QUEUED);
1357 }
1358 
1359 static void
1360 tpc_process(struct tpc_list *list)
1361 {
1362 	struct ctl_lun *lun = list->lun;
1363 	struct ctl_softc *softc = lun->ctl_softc;
1364 	struct scsi_ec_segment *seg;
1365 	struct ctl_scsiio *ctsio = list->ctsio;
1366 	int retval = CTL_RETVAL_COMPLETE;
1367 	uint8_t csi[4];
1368 
1369 	if (list->service_action == EC_WUT) {
1370 		if (list->token != NULL)
1371 			retval = tpc_process_wut(list);
1372 		else
1373 			retval = tpc_process_zero_wut(list);
1374 		if (retval == CTL_RETVAL_QUEUED)
1375 			return;
1376 		if (retval == CTL_RETVAL_ERROR) {
1377 			list->error = 1;
1378 			goto done;
1379 		}
1380 	} else {
1381 //printf("ZZZ %d cscd, %d segs\n", list->ncscd, list->nseg);
1382 		while (list->curseg < list->nseg) {
1383 			seg = list->seg[list->curseg];
1384 			switch (seg->type_code) {
1385 			case EC_SEG_B2B:
1386 				retval = tpc_process_b2b(list);
1387 				break;
1388 			case EC_SEG_VERIFY:
1389 				retval = tpc_process_verify(list);
1390 				break;
1391 			case EC_SEG_REGISTER_KEY:
1392 				retval = tpc_process_register_key(list);
1393 				break;
1394 			default:
1395 				scsi_ulto4b(list->curseg, csi);
1396 				ctl_set_sense(ctsio, /*current_error*/ 1,
1397 				    /*sense_key*/ SSD_KEY_COPY_ABORTED,
1398 				    /*asc*/ 0x26, /*ascq*/ 0x09,
1399 				    SSD_ELEM_COMMAND, sizeof(csi), csi,
1400 				    SSD_ELEM_NONE);
1401 				goto done;
1402 			}
1403 			if (retval == CTL_RETVAL_QUEUED)
1404 				return;
1405 			if (retval == CTL_RETVAL_ERROR) {
1406 				list->error = 1;
1407 				goto done;
1408 			}
1409 			list->curseg++;
1410 			list->stage = 0;
1411 		}
1412 	}
1413 
1414 	ctl_set_success(ctsio);
1415 
1416 done:
1417 //printf("ZZZ done\n");
1418 	free(list->params, M_CTL);
1419 	list->params = NULL;
1420 	if (list->token) {
1421 		mtx_lock(&softc->tpc_lock);
1422 		if (--list->token->active == 0)
1423 			list->token->last_active = time_uptime;
1424 		mtx_unlock(&softc->tpc_lock);
1425 		list->token = NULL;
1426 	}
1427 	mtx_lock(&lun->lun_lock);
1428 	if ((list->flags & EC_LIST_ID_USAGE_MASK) == EC_LIST_ID_USAGE_NONE) {
1429 		TAILQ_REMOVE(&lun->tpc_lists, list, links);
1430 		free(list, M_CTL);
1431 	} else {
1432 		list->completed = 1;
1433 		list->last_active = time_uptime;
1434 		list->sense_data = ctsio->sense_data;
1435 		list->sense_len = ctsio->sense_len;
1436 		list->scsi_status = ctsio->scsi_status;
1437 	}
1438 	mtx_unlock(&lun->lun_lock);
1439 
1440 	ctl_done((union ctl_io *)ctsio);
1441 }
1442 
1443 /*
1444  * For any sort of check condition, busy, etc., we just retry.  We do not
1445  * decrement the retry count for unit attention type errors.  These are
1446  * normal, and we want to save the retry count for "real" errors.  Otherwise,
1447  * we could end up with situations where a command will succeed in some
1448  * situations and fail in others, depending on whether a unit attention is
1449  * pending.  Also, some of our error recovery actions, most notably the
1450  * LUN reset action, will cause a unit attention.
1451  *
1452  * We can add more detail here later if necessary.
1453  */
1454 static tpc_error_action
1455 tpc_checkcond_parse(union ctl_io *io)
1456 {
1457 	tpc_error_action error_action;
1458 	int error_code, sense_key, asc, ascq;
1459 
1460 	/*
1461 	 * Default to retrying the command.
1462 	 */
1463 	error_action = TPC_ERR_RETRY;
1464 
1465 	scsi_extract_sense_len(&io->scsiio.sense_data,
1466 			       io->scsiio.sense_len,
1467 			       &error_code,
1468 			       &sense_key,
1469 			       &asc,
1470 			       &ascq,
1471 			       /*show_errors*/ 1);
1472 
1473 	switch (error_code) {
1474 	case SSD_DEFERRED_ERROR:
1475 	case SSD_DESC_DEFERRED_ERROR:
1476 		error_action |= TPC_ERR_NO_DECREMENT;
1477 		break;
1478 	case SSD_CURRENT_ERROR:
1479 	case SSD_DESC_CURRENT_ERROR:
1480 	default:
1481 		switch (sense_key) {
1482 		case SSD_KEY_UNIT_ATTENTION:
1483 			error_action |= TPC_ERR_NO_DECREMENT;
1484 			break;
1485 		case SSD_KEY_HARDWARE_ERROR:
1486 			/*
1487 			 * This is our generic "something bad happened"
1488 			 * error code.  It often isn't recoverable.
1489 			 */
1490 			if ((asc == 0x44) && (ascq == 0x00))
1491 				error_action = TPC_ERR_FAIL;
1492 			break;
1493 		case SSD_KEY_NOT_READY:
1494 			/*
1495 			 * If the LUN is powered down, there likely isn't
1496 			 * much point in retrying right now.
1497 			 */
1498 			if ((asc == 0x04) && (ascq == 0x02))
1499 				error_action = TPC_ERR_FAIL;
1500 			/*
1501 			 * If the LUN is offline, there probably isn't much
1502 			 * point in retrying, either.
1503 			 */
1504 			if ((asc == 0x04) && (ascq == 0x03))
1505 				error_action = TPC_ERR_FAIL;
1506 			break;
1507 		}
1508 	}
1509 	return (error_action);
1510 }
1511 
1512 static tpc_error_action
1513 tpc_error_parse(union ctl_io *io)
1514 {
1515 	tpc_error_action error_action = TPC_ERR_RETRY;
1516 
1517 	switch (io->io_hdr.io_type) {
1518 	case CTL_IO_SCSI:
1519 		switch (io->io_hdr.status & CTL_STATUS_MASK) {
1520 		case CTL_SCSI_ERROR:
1521 			switch (io->scsiio.scsi_status) {
1522 			case SCSI_STATUS_CHECK_COND:
1523 				error_action = tpc_checkcond_parse(io);
1524 				break;
1525 			default:
1526 				break;
1527 			}
1528 			break;
1529 		default:
1530 			break;
1531 		}
1532 		break;
1533 	case CTL_IO_TASK:
1534 		break;
1535 	default:
1536 		panic("%s: invalid ctl_io type %d\n", __func__,
1537 		      io->io_hdr.io_type);
1538 		break;
1539 	}
1540 	return (error_action);
1541 }
1542 
1543 void
1544 tpc_done(union ctl_io *io)
1545 {
1546 	struct tpc_io *tio, *tior;
1547 
1548 	/*
1549 	 * Very minimal retry logic.  We basically retry if we got an error
1550 	 * back, and the retry count is greater than 0.  If we ever want
1551 	 * more sophisticated initiator type behavior, the CAM error
1552 	 * recovery code in ../common might be helpful.
1553 	 */
1554 	tio = io->io_hdr.ctl_private[CTL_PRIV_FRONTEND].ptr;
1555 	if (((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS)
1556 	 && (io->io_hdr.retries > 0)) {
1557 		ctl_io_status old_status;
1558 		tpc_error_action error_action;
1559 
1560 		error_action = tpc_error_parse(io);
1561 		switch (error_action & TPC_ERR_MASK) {
1562 		case TPC_ERR_FAIL:
1563 			break;
1564 		case TPC_ERR_RETRY:
1565 		default:
1566 			if ((error_action & TPC_ERR_NO_DECREMENT) == 0)
1567 				io->io_hdr.retries--;
1568 			old_status = io->io_hdr.status;
1569 			io->io_hdr.status = CTL_STATUS_NONE;
1570 			io->io_hdr.flags &= ~CTL_FLAG_ABORT;
1571 			io->io_hdr.flags &= ~CTL_FLAG_SENT_2OTHER_SC;
1572 			if (tpcl_queue(io, tio->lun) != CTL_RETVAL_COMPLETE) {
1573 				printf("%s: error returned from ctl_queue()!\n",
1574 				       __func__);
1575 				io->io_hdr.status = old_status;
1576 			} else
1577 				return;
1578 		}
1579 	}
1580 
1581 	if ((io->io_hdr.status & CTL_STATUS_MASK) != CTL_SUCCESS)
1582 		tio->list->error = 1;
1583 	else
1584 		atomic_add_int(&tio->list->curops, 1);
1585 	if (!tio->list->error && !tio->list->abort) {
1586 		while ((tior = TAILQ_FIRST(&tio->run)) != NULL) {
1587 			TAILQ_REMOVE(&tio->run, tior, rlinks);
1588 			atomic_add_int(&tio->list->tbdio, 1);
1589 			if (tpcl_queue(tior->io, tior->lun) != CTL_RETVAL_COMPLETE)
1590 				panic("tpcl_queue() error");
1591 		}
1592 	}
1593 	if (atomic_fetchadd_int(&tio->list->tbdio, -1) == 1)
1594 		tpc_process(tio->list);
1595 }
1596 
1597 int
1598 ctl_extended_copy_lid1(struct ctl_scsiio *ctsio)
1599 {
1600 	struct scsi_extended_copy *cdb;
1601 	struct scsi_extended_copy_lid1_data *data;
1602 	struct ctl_lun *lun;
1603 	struct tpc_list *list, *tlist;
1604 	uint8_t *ptr;
1605 	char *value;
1606 	int len, off, lencscd, lenseg, leninl, nseg;
1607 
1608 	CTL_DEBUG_PRINT(("ctl_extended_copy_lid1\n"));
1609 
1610 	lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
1611 	cdb = (struct scsi_extended_copy *)ctsio->cdb;
1612 	len = scsi_4btoul(cdb->length);
1613 
1614 	if (len == 0) {
1615 		ctl_set_success(ctsio);
1616 		goto done;
1617 	}
1618 	if (len < sizeof(struct scsi_extended_copy_lid1_data) ||
1619 	    len > sizeof(struct scsi_extended_copy_lid1_data) +
1620 	    TPC_MAX_LIST + TPC_MAX_INLINE) {
1621 		ctl_set_invalid_field(ctsio, /*sks_valid*/ 1, /*command*/ 1,
1622 		    /*field*/ 9, /*bit_valid*/ 0, /*bit*/ 0);
1623 		goto done;
1624 	}
1625 
1626 	/*
1627 	 * If we've got a kernel request that hasn't been malloced yet,
1628 	 * malloc it and tell the caller the data buffer is here.
1629 	 */
1630 	if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) {
1631 		ctsio->kern_data_ptr = malloc(len, M_CTL, M_WAITOK);
1632 		ctsio->kern_data_len = len;
1633 		ctsio->kern_total_len = len;
1634 		ctsio->kern_data_resid = 0;
1635 		ctsio->kern_rel_offset = 0;
1636 		ctsio->kern_sg_entries = 0;
1637 		ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED;
1638 		ctsio->be_move_done = ctl_config_move_done;
1639 		ctl_datamove((union ctl_io *)ctsio);
1640 
1641 		return (CTL_RETVAL_COMPLETE);
1642 	}
1643 
1644 	data = (struct scsi_extended_copy_lid1_data *)ctsio->kern_data_ptr;
1645 	lencscd = scsi_2btoul(data->cscd_list_length);
1646 	lenseg = scsi_4btoul(data->segment_list_length);
1647 	leninl = scsi_4btoul(data->inline_data_length);
1648 	if (lencscd > TPC_MAX_CSCDS * sizeof(struct scsi_ec_cscd)) {
1649 		ctl_set_sense(ctsio, /*current_error*/ 1,
1650 		    /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST,
1651 		    /*asc*/ 0x26, /*ascq*/ 0x06, SSD_ELEM_NONE);
1652 		goto done;
1653 	}
1654 	if (lenseg > TPC_MAX_SEGS * sizeof(struct scsi_ec_segment)) {
1655 		ctl_set_sense(ctsio, /*current_error*/ 1,
1656 		    /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST,
1657 		    /*asc*/ 0x26, /*ascq*/ 0x08, SSD_ELEM_NONE);
1658 		goto done;
1659 	}
1660 	if (lencscd + lenseg > TPC_MAX_LIST ||
1661 	    leninl > TPC_MAX_INLINE ||
1662 	    len < sizeof(struct scsi_extended_copy_lid1_data) +
1663 	     lencscd + lenseg + leninl) {
1664 		ctl_set_param_len_error(ctsio);
1665 		goto done;
1666 	}
1667 
1668 	list = malloc(sizeof(struct tpc_list), M_CTL, M_WAITOK | M_ZERO);
1669 	list->service_action = cdb->service_action;
1670 	value = ctl_get_opt(&lun->be_lun->options, "insecure_tpc");
1671 	if (value != NULL && strcmp(value, "on") == 0)
1672 		list->init_port = -1;
1673 	else
1674 		list->init_port = ctsio->io_hdr.nexus.targ_port;
1675 	list->init_idx = ctl_get_initindex(&ctsio->io_hdr.nexus);
1676 	list->list_id = data->list_identifier;
1677 	list->flags = data->flags;
1678 	list->params = ctsio->kern_data_ptr;
1679 	list->cscd = (struct scsi_ec_cscd *)&data->data[0];
1680 	ptr = &data->data[lencscd];
1681 	for (nseg = 0, off = 0; off < lenseg; nseg++) {
1682 		if (nseg >= TPC_MAX_SEGS) {
1683 			free(list, M_CTL);
1684 			ctl_set_sense(ctsio, /*current_error*/ 1,
1685 			    /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST,
1686 			    /*asc*/ 0x26, /*ascq*/ 0x08, SSD_ELEM_NONE);
1687 			goto done;
1688 		}
1689 		list->seg[nseg] = (struct scsi_ec_segment *)(ptr + off);
1690 		off += sizeof(struct scsi_ec_segment) +
1691 		    scsi_2btoul(list->seg[nseg]->descr_length);
1692 	}
1693 	list->inl = &data->data[lencscd + lenseg];
1694 	list->ncscd = lencscd / sizeof(struct scsi_ec_cscd);
1695 	list->nseg = nseg;
1696 	list->leninl = leninl;
1697 	list->ctsio = ctsio;
1698 	list->lun = lun;
1699 	mtx_lock(&lun->lun_lock);
1700 	if ((list->flags & EC_LIST_ID_USAGE_MASK) != EC_LIST_ID_USAGE_NONE) {
1701 		tlist = tpc_find_list(lun, list->list_id, list->init_idx);
1702 		if (tlist != NULL && !tlist->completed) {
1703 			mtx_unlock(&lun->lun_lock);
1704 			free(list, M_CTL);
1705 			ctl_set_invalid_field(ctsio, /*sks_valid*/ 1,
1706 			    /*command*/ 0, /*field*/ 0, /*bit_valid*/ 0,
1707 			    /*bit*/ 0);
1708 			goto done;
1709 		}
1710 		if (tlist != NULL) {
1711 			TAILQ_REMOVE(&lun->tpc_lists, tlist, links);
1712 			free(tlist, M_CTL);
1713 		}
1714 	}
1715 	TAILQ_INSERT_TAIL(&lun->tpc_lists, list, links);
1716 	mtx_unlock(&lun->lun_lock);
1717 
1718 	tpc_process(list);
1719 	return (CTL_RETVAL_COMPLETE);
1720 
1721 done:
1722 	if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) {
1723 		free(ctsio->kern_data_ptr, M_CTL);
1724 		ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED;
1725 	}
1726 	ctl_done((union ctl_io *)ctsio);
1727 	return (CTL_RETVAL_COMPLETE);
1728 }
1729 
1730 int
1731 ctl_extended_copy_lid4(struct ctl_scsiio *ctsio)
1732 {
1733 	struct scsi_extended_copy *cdb;
1734 	struct scsi_extended_copy_lid4_data *data;
1735 	struct ctl_lun *lun;
1736 	struct tpc_list *list, *tlist;
1737 	uint8_t *ptr;
1738 	char *value;
1739 	int len, off, lencscd, lenseg, leninl, nseg;
1740 
1741 	CTL_DEBUG_PRINT(("ctl_extended_copy_lid4\n"));
1742 
1743 	lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
1744 	cdb = (struct scsi_extended_copy *)ctsio->cdb;
1745 	len = scsi_4btoul(cdb->length);
1746 
1747 	if (len == 0) {
1748 		ctl_set_success(ctsio);
1749 		goto done;
1750 	}
1751 	if (len < sizeof(struct scsi_extended_copy_lid4_data) ||
1752 	    len > sizeof(struct scsi_extended_copy_lid4_data) +
1753 	    TPC_MAX_LIST + TPC_MAX_INLINE) {
1754 		ctl_set_invalid_field(ctsio, /*sks_valid*/ 1, /*command*/ 1,
1755 		    /*field*/ 9, /*bit_valid*/ 0, /*bit*/ 0);
1756 		goto done;
1757 	}
1758 
1759 	/*
1760 	 * If we've got a kernel request that hasn't been malloced yet,
1761 	 * malloc it and tell the caller the data buffer is here.
1762 	 */
1763 	if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) {
1764 		ctsio->kern_data_ptr = malloc(len, M_CTL, M_WAITOK);
1765 		ctsio->kern_data_len = len;
1766 		ctsio->kern_total_len = len;
1767 		ctsio->kern_data_resid = 0;
1768 		ctsio->kern_rel_offset = 0;
1769 		ctsio->kern_sg_entries = 0;
1770 		ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED;
1771 		ctsio->be_move_done = ctl_config_move_done;
1772 		ctl_datamove((union ctl_io *)ctsio);
1773 
1774 		return (CTL_RETVAL_COMPLETE);
1775 	}
1776 
1777 	data = (struct scsi_extended_copy_lid4_data *)ctsio->kern_data_ptr;
1778 	lencscd = scsi_2btoul(data->cscd_list_length);
1779 	lenseg = scsi_2btoul(data->segment_list_length);
1780 	leninl = scsi_2btoul(data->inline_data_length);
1781 	if (lencscd > TPC_MAX_CSCDS * sizeof(struct scsi_ec_cscd)) {
1782 		ctl_set_sense(ctsio, /*current_error*/ 1,
1783 		    /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST,
1784 		    /*asc*/ 0x26, /*ascq*/ 0x06, SSD_ELEM_NONE);
1785 		goto done;
1786 	}
1787 	if (lenseg > TPC_MAX_SEGS * sizeof(struct scsi_ec_segment)) {
1788 		ctl_set_sense(ctsio, /*current_error*/ 1,
1789 		    /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST,
1790 		    /*asc*/ 0x26, /*ascq*/ 0x08, SSD_ELEM_NONE);
1791 		goto done;
1792 	}
1793 	if (lencscd + lenseg > TPC_MAX_LIST ||
1794 	    leninl > TPC_MAX_INLINE ||
1795 	    len < sizeof(struct scsi_extended_copy_lid1_data) +
1796 	     lencscd + lenseg + leninl) {
1797 		ctl_set_param_len_error(ctsio);
1798 		goto done;
1799 	}
1800 
1801 	list = malloc(sizeof(struct tpc_list), M_CTL, M_WAITOK | M_ZERO);
1802 	list->service_action = cdb->service_action;
1803 	value = ctl_get_opt(&lun->be_lun->options, "insecure_tpc");
1804 	if (value != NULL && strcmp(value, "on") == 0)
1805 		list->init_port = -1;
1806 	else
1807 		list->init_port = ctsio->io_hdr.nexus.targ_port;
1808 	list->init_idx = ctl_get_initindex(&ctsio->io_hdr.nexus);
1809 	list->list_id = scsi_4btoul(data->list_identifier);
1810 	list->flags = data->flags;
1811 	list->params = ctsio->kern_data_ptr;
1812 	list->cscd = (struct scsi_ec_cscd *)&data->data[0];
1813 	ptr = &data->data[lencscd];
1814 	for (nseg = 0, off = 0; off < lenseg; nseg++) {
1815 		if (nseg >= TPC_MAX_SEGS) {
1816 			free(list, M_CTL);
1817 			ctl_set_sense(ctsio, /*current_error*/ 1,
1818 			    /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST,
1819 			    /*asc*/ 0x26, /*ascq*/ 0x08, SSD_ELEM_NONE);
1820 			goto done;
1821 		}
1822 		list->seg[nseg] = (struct scsi_ec_segment *)(ptr + off);
1823 		off += sizeof(struct scsi_ec_segment) +
1824 		    scsi_2btoul(list->seg[nseg]->descr_length);
1825 	}
1826 	list->inl = &data->data[lencscd + lenseg];
1827 	list->ncscd = lencscd / sizeof(struct scsi_ec_cscd);
1828 	list->nseg = nseg;
1829 	list->leninl = leninl;
1830 	list->ctsio = ctsio;
1831 	list->lun = lun;
1832 	mtx_lock(&lun->lun_lock);
1833 	if ((list->flags & EC_LIST_ID_USAGE_MASK) != EC_LIST_ID_USAGE_NONE) {
1834 		tlist = tpc_find_list(lun, list->list_id, list->init_idx);
1835 		if (tlist != NULL && !tlist->completed) {
1836 			mtx_unlock(&lun->lun_lock);
1837 			free(list, M_CTL);
1838 			ctl_set_invalid_field(ctsio, /*sks_valid*/ 1,
1839 			    /*command*/ 0, /*field*/ 0, /*bit_valid*/ 0,
1840 			    /*bit*/ 0);
1841 			goto done;
1842 		}
1843 		if (tlist != NULL) {
1844 			TAILQ_REMOVE(&lun->tpc_lists, tlist, links);
1845 			free(tlist, M_CTL);
1846 		}
1847 	}
1848 	TAILQ_INSERT_TAIL(&lun->tpc_lists, list, links);
1849 	mtx_unlock(&lun->lun_lock);
1850 
1851 	tpc_process(list);
1852 	return (CTL_RETVAL_COMPLETE);
1853 
1854 done:
1855 	if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) {
1856 		free(ctsio->kern_data_ptr, M_CTL);
1857 		ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED;
1858 	}
1859 	ctl_done((union ctl_io *)ctsio);
1860 	return (CTL_RETVAL_COMPLETE);
1861 }
1862 
1863 static void
1864 tpc_create_token(struct ctl_lun *lun, struct ctl_port *port, off_t len,
1865     struct scsi_token *token)
1866 {
1867 	static int id = 0;
1868 	struct scsi_vpd_id_descriptor *idd = NULL;
1869 	struct scsi_ec_cscd_id *cscd;
1870 	struct scsi_read_capacity_data_long *dtsd;
1871 	int targid_len;
1872 
1873 	scsi_ulto4b(ROD_TYPE_AUR, token->type);
1874 	scsi_ulto2b(0x01f8, token->length);
1875 	scsi_u64to8b(atomic_fetchadd_int(&id, 1), &token->body[0]);
1876 	if (lun->lun_devid)
1877 		idd = scsi_get_devid_desc((struct scsi_vpd_id_descriptor *)
1878 		    lun->lun_devid->data, lun->lun_devid->len,
1879 		    scsi_devid_is_lun_naa);
1880 	if (idd == NULL && lun->lun_devid)
1881 		idd = scsi_get_devid_desc((struct scsi_vpd_id_descriptor *)
1882 		    lun->lun_devid->data, lun->lun_devid->len,
1883 		    scsi_devid_is_lun_eui64);
1884 	if (idd != NULL) {
1885 		cscd = (struct scsi_ec_cscd_id *)&token->body[8];
1886 		cscd->type_code = EC_CSCD_ID;
1887 		cscd->luidt_pdt = T_DIRECT;
1888 		memcpy(&cscd->codeset, idd, 4 + idd->length);
1889 		scsi_ulto3b(lun->be_lun->blocksize, cscd->dtsp.block_length);
1890 	}
1891 	scsi_u64to8b(0, &token->body[40]); /* XXX: Should be 128bit value. */
1892 	scsi_u64to8b(len, &token->body[48]);
1893 
1894 	/* ROD token device type specific data (RC16 without first field) */
1895 	dtsd = (struct scsi_read_capacity_data_long *)&token->body[88 - 8];
1896 	scsi_ulto4b(lun->be_lun->blocksize, dtsd->length);
1897 	dtsd->prot_lbppbe = lun->be_lun->pblockexp & SRC16_LBPPBE;
1898 	scsi_ulto2b(lun->be_lun->pblockoff & SRC16_LALBA_A, dtsd->lalba_lbp);
1899 	if (lun->be_lun->flags & CTL_LUN_FLAG_UNMAP)
1900 		dtsd->lalba_lbp[0] |= SRC16_LBPME | SRC16_LBPRZ;
1901 
1902 	if (port->target_devid) {
1903 		targid_len = port->target_devid->len;
1904 		memcpy(&token->body[120], port->target_devid->data, targid_len);
1905 	} else
1906 		targid_len = 32;
1907 	arc4rand(&token->body[120 + targid_len], 384 - targid_len, 0);
1908 };
1909 
1910 int
1911 ctl_populate_token(struct ctl_scsiio *ctsio)
1912 {
1913 	struct scsi_populate_token *cdb;
1914 	struct scsi_populate_token_data *data;
1915 	struct ctl_softc *softc;
1916 	struct ctl_lun *lun;
1917 	struct ctl_port *port;
1918 	struct tpc_list *list, *tlist;
1919 	struct tpc_token *token;
1920 	int len, lendesc;
1921 
1922 	CTL_DEBUG_PRINT(("ctl_populate_token\n"));
1923 
1924 	lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
1925 	softc = lun->ctl_softc;
1926 	port = softc->ctl_ports[ctsio->io_hdr.nexus.targ_port];
1927 	cdb = (struct scsi_populate_token *)ctsio->cdb;
1928 	len = scsi_4btoul(cdb->length);
1929 
1930 	if (len < sizeof(struct scsi_populate_token_data) ||
1931 	    len > sizeof(struct scsi_populate_token_data) +
1932 	     TPC_MAX_SEGS * sizeof(struct scsi_range_desc)) {
1933 		ctl_set_invalid_field(ctsio, /*sks_valid*/ 1, /*command*/ 1,
1934 		    /*field*/ 9, /*bit_valid*/ 0, /*bit*/ 0);
1935 		goto done;
1936 	}
1937 
1938 	/*
1939 	 * If we've got a kernel request that hasn't been malloced yet,
1940 	 * malloc it and tell the caller the data buffer is here.
1941 	 */
1942 	if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) {
1943 		ctsio->kern_data_ptr = malloc(len, M_CTL, M_WAITOK);
1944 		ctsio->kern_data_len = len;
1945 		ctsio->kern_total_len = len;
1946 		ctsio->kern_data_resid = 0;
1947 		ctsio->kern_rel_offset = 0;
1948 		ctsio->kern_sg_entries = 0;
1949 		ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED;
1950 		ctsio->be_move_done = ctl_config_move_done;
1951 		ctl_datamove((union ctl_io *)ctsio);
1952 
1953 		return (CTL_RETVAL_COMPLETE);
1954 	}
1955 
1956 	data = (struct scsi_populate_token_data *)ctsio->kern_data_ptr;
1957 	lendesc = scsi_2btoul(data->range_descriptor_length);
1958 	if (len < sizeof(struct scsi_populate_token_data) + lendesc) {
1959 		ctl_set_invalid_field(ctsio, /*sks_valid*/ 1, /*command*/ 0,
1960 		    /*field*/ 2, /*bit_valid*/ 0, /*bit*/ 0);
1961 		goto done;
1962 	}
1963 /*
1964 	printf("PT(list=%u) flags=%x to=%d rt=%x len=%x\n",
1965 	    scsi_4btoul(cdb->list_identifier),
1966 	    data->flags, scsi_4btoul(data->inactivity_timeout),
1967 	    scsi_4btoul(data->rod_type),
1968 	    scsi_2btoul(data->range_descriptor_length));
1969 */
1970 	if ((data->flags & EC_PT_RTV) &&
1971 	    scsi_4btoul(data->rod_type) != ROD_TYPE_AUR) {
1972 		ctl_set_invalid_field(ctsio, /*sks_valid*/ 1, /*command*/ 0,
1973 		    /*field*/ 8, /*bit_valid*/ 0, /*bit*/ 0);
1974 		goto done;
1975 	}
1976 
1977 	list = malloc(sizeof(struct tpc_list), M_CTL, M_WAITOK | M_ZERO);
1978 	list->service_action = cdb->service_action;
1979 	list->init_port = ctsio->io_hdr.nexus.targ_port;
1980 	list->init_idx = ctl_get_initindex(&ctsio->io_hdr.nexus);
1981 	list->list_id = scsi_4btoul(cdb->list_identifier);
1982 	list->flags = data->flags;
1983 	list->ctsio = ctsio;
1984 	list->lun = lun;
1985 	mtx_lock(&lun->lun_lock);
1986 	tlist = tpc_find_list(lun, list->list_id, list->init_idx);
1987 	if (tlist != NULL && !tlist->completed) {
1988 		mtx_unlock(&lun->lun_lock);
1989 		free(list, M_CTL);
1990 		ctl_set_invalid_field(ctsio, /*sks_valid*/ 1,
1991 		    /*command*/ 0, /*field*/ 0, /*bit_valid*/ 0,
1992 		    /*bit*/ 0);
1993 		goto done;
1994 	}
1995 	if (tlist != NULL) {
1996 		TAILQ_REMOVE(&lun->tpc_lists, tlist, links);
1997 		free(tlist, M_CTL);
1998 	}
1999 	TAILQ_INSERT_TAIL(&lun->tpc_lists, list, links);
2000 	mtx_unlock(&lun->lun_lock);
2001 
2002 	token = malloc(sizeof(*token), M_CTL, M_WAITOK | M_ZERO);
2003 	token->lun = lun->lun;
2004 	token->blocksize = lun->be_lun->blocksize;
2005 	token->params = ctsio->kern_data_ptr;
2006 	token->range = &data->desc[0];
2007 	token->nrange = scsi_2btoul(data->range_descriptor_length) /
2008 	    sizeof(struct scsi_range_desc);
2009 	list->cursectors = tpc_ranges_length(token->range, token->nrange);
2010 	list->curbytes = (off_t)list->cursectors * lun->be_lun->blocksize;
2011 	tpc_create_token(lun, port, list->curbytes,
2012 	    (struct scsi_token *)token->token);
2013 	token->active = 0;
2014 	token->last_active = time_uptime;
2015 	token->timeout = scsi_4btoul(data->inactivity_timeout);
2016 	if (token->timeout == 0)
2017 		token->timeout = TPC_DFL_TOKEN_TIMEOUT;
2018 	else if (token->timeout < TPC_MIN_TOKEN_TIMEOUT)
2019 		token->timeout = TPC_MIN_TOKEN_TIMEOUT;
2020 	else if (token->timeout > TPC_MAX_TOKEN_TIMEOUT) {
2021 		ctl_set_invalid_field(ctsio, /*sks_valid*/ 1,
2022 		    /*command*/ 0, /*field*/ 4, /*bit_valid*/ 0,
2023 		    /*bit*/ 0);
2024 	}
2025 	memcpy(list->res_token, token->token, sizeof(list->res_token));
2026 	list->res_token_valid = 1;
2027 	list->curseg = 0;
2028 	list->completed = 1;
2029 	list->last_active = time_uptime;
2030 	mtx_lock(&softc->tpc_lock);
2031 	TAILQ_INSERT_TAIL(&softc->tpc_tokens, token, links);
2032 	mtx_unlock(&softc->tpc_lock);
2033 	ctl_set_success(ctsio);
2034 	ctl_done((union ctl_io *)ctsio);
2035 	return (CTL_RETVAL_COMPLETE);
2036 
2037 done:
2038 	if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) {
2039 		free(ctsio->kern_data_ptr, M_CTL);
2040 		ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED;
2041 	}
2042 	ctl_done((union ctl_io *)ctsio);
2043 	return (CTL_RETVAL_COMPLETE);
2044 }
2045 
2046 int
2047 ctl_write_using_token(struct ctl_scsiio *ctsio)
2048 {
2049 	struct scsi_write_using_token *cdb;
2050 	struct scsi_write_using_token_data *data;
2051 	struct ctl_softc *softc;
2052 	struct ctl_lun *lun;
2053 	struct tpc_list *list, *tlist;
2054 	struct tpc_token *token;
2055 	int len, lendesc;
2056 
2057 	CTL_DEBUG_PRINT(("ctl_write_using_token\n"));
2058 
2059 	lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
2060 	softc = lun->ctl_softc;
2061 	cdb = (struct scsi_write_using_token *)ctsio->cdb;
2062 	len = scsi_4btoul(cdb->length);
2063 
2064 	if (len < sizeof(struct scsi_populate_token_data) ||
2065 	    len > sizeof(struct scsi_populate_token_data) +
2066 	     TPC_MAX_SEGS * sizeof(struct scsi_range_desc)) {
2067 		ctl_set_invalid_field(ctsio, /*sks_valid*/ 1, /*command*/ 1,
2068 		    /*field*/ 9, /*bit_valid*/ 0, /*bit*/ 0);
2069 		goto done;
2070 	}
2071 
2072 	/*
2073 	 * If we've got a kernel request that hasn't been malloced yet,
2074 	 * malloc it and tell the caller the data buffer is here.
2075 	 */
2076 	if ((ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) == 0) {
2077 		ctsio->kern_data_ptr = malloc(len, M_CTL, M_WAITOK);
2078 		ctsio->kern_data_len = len;
2079 		ctsio->kern_total_len = len;
2080 		ctsio->kern_data_resid = 0;
2081 		ctsio->kern_rel_offset = 0;
2082 		ctsio->kern_sg_entries = 0;
2083 		ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED;
2084 		ctsio->be_move_done = ctl_config_move_done;
2085 		ctl_datamove((union ctl_io *)ctsio);
2086 
2087 		return (CTL_RETVAL_COMPLETE);
2088 	}
2089 
2090 	data = (struct scsi_write_using_token_data *)ctsio->kern_data_ptr;
2091 	lendesc = scsi_2btoul(data->range_descriptor_length);
2092 	if (len < sizeof(struct scsi_populate_token_data) + lendesc) {
2093 		ctl_set_invalid_field(ctsio, /*sks_valid*/ 1, /*command*/ 0,
2094 		    /*field*/ 2, /*bit_valid*/ 0, /*bit*/ 0);
2095 		goto done;
2096 	}
2097 /*
2098 	printf("WUT(list=%u) flags=%x off=%ju len=%x\n",
2099 	    scsi_4btoul(cdb->list_identifier),
2100 	    data->flags, scsi_8btou64(data->offset_into_rod),
2101 	    scsi_2btoul(data->range_descriptor_length));
2102 */
2103 	list = malloc(sizeof(struct tpc_list), M_CTL, M_WAITOK | M_ZERO);
2104 	list->service_action = cdb->service_action;
2105 	list->init_port = ctsio->io_hdr.nexus.targ_port;
2106 	list->init_idx = ctl_get_initindex(&ctsio->io_hdr.nexus);
2107 	list->list_id = scsi_4btoul(cdb->list_identifier);
2108 	list->flags = data->flags;
2109 	list->params = ctsio->kern_data_ptr;
2110 	list->range = &data->desc[0];
2111 	list->nrange = scsi_2btoul(data->range_descriptor_length) /
2112 	    sizeof(struct scsi_range_desc);
2113 	list->offset_into_rod = scsi_8btou64(data->offset_into_rod);
2114 	list->ctsio = ctsio;
2115 	list->lun = lun;
2116 	mtx_lock(&lun->lun_lock);
2117 	tlist = tpc_find_list(lun, list->list_id, list->init_idx);
2118 	if (tlist != NULL && !tlist->completed) {
2119 		mtx_unlock(&lun->lun_lock);
2120 		free(list, M_CTL);
2121 		ctl_set_invalid_field(ctsio, /*sks_valid*/ 1,
2122 		    /*command*/ 0, /*field*/ 0, /*bit_valid*/ 0,
2123 		    /*bit*/ 0);
2124 		goto done;
2125 	}
2126 	if (tlist != NULL) {
2127 		TAILQ_REMOVE(&lun->tpc_lists, tlist, links);
2128 		free(tlist, M_CTL);
2129 	}
2130 	TAILQ_INSERT_TAIL(&lun->tpc_lists, list, links);
2131 	mtx_unlock(&lun->lun_lock);
2132 
2133 	/* Block device zero ROD token -> no token. */
2134 	if (scsi_4btoul(data->rod_token) == ROD_TYPE_BLOCK_ZERO) {
2135 		tpc_process(list);
2136 		return (CTL_RETVAL_COMPLETE);
2137 	}
2138 
2139 	mtx_lock(&softc->tpc_lock);
2140 	TAILQ_FOREACH(token, &softc->tpc_tokens, links) {
2141 		if (memcmp(token->token, data->rod_token,
2142 		    sizeof(data->rod_token)) == 0)
2143 			break;
2144 	}
2145 	if (token != NULL) {
2146 		token->active++;
2147 		list->token = token;
2148 		if (data->flags & EC_WUT_DEL_TKN)
2149 			token->timeout = 0;
2150 	}
2151 	mtx_unlock(&softc->tpc_lock);
2152 	if (token == NULL) {
2153 		mtx_lock(&lun->lun_lock);
2154 		TAILQ_REMOVE(&lun->tpc_lists, list, links);
2155 		mtx_unlock(&lun->lun_lock);
2156 		free(list, M_CTL);
2157 		ctl_set_sense(ctsio, /*current_error*/ 1,
2158 		    /*sense_key*/ SSD_KEY_ILLEGAL_REQUEST,
2159 		    /*asc*/ 0x23, /*ascq*/ 0x04, SSD_ELEM_NONE);
2160 		goto done;
2161 	}
2162 
2163 	tpc_process(list);
2164 	return (CTL_RETVAL_COMPLETE);
2165 
2166 done:
2167 	if (ctsio->io_hdr.flags & CTL_FLAG_ALLOCATED) {
2168 		free(ctsio->kern_data_ptr, M_CTL);
2169 		ctsio->io_hdr.flags &= ~CTL_FLAG_ALLOCATED;
2170 	}
2171 	ctl_done((union ctl_io *)ctsio);
2172 	return (CTL_RETVAL_COMPLETE);
2173 }
2174 
2175 int
2176 ctl_receive_rod_token_information(struct ctl_scsiio *ctsio)
2177 {
2178 	struct ctl_lun *lun;
2179 	struct scsi_receive_rod_token_information *cdb;
2180 	struct scsi_receive_copy_status_lid4_data *data;
2181 	struct tpc_list *list;
2182 	struct tpc_list list_copy;
2183 	uint8_t *ptr;
2184 	int retval;
2185 	int alloc_len, total_len, token_len;
2186 	uint32_t list_id;
2187 
2188 	CTL_DEBUG_PRINT(("ctl_receive_rod_token_information\n"));
2189 
2190 	cdb = (struct scsi_receive_rod_token_information *)ctsio->cdb;
2191 	lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
2192 
2193 	retval = CTL_RETVAL_COMPLETE;
2194 
2195 	list_id = scsi_4btoul(cdb->list_identifier);
2196 	mtx_lock(&lun->lun_lock);
2197 	list = tpc_find_list(lun, list_id,
2198 	    ctl_get_initindex(&ctsio->io_hdr.nexus));
2199 	if (list == NULL) {
2200 		mtx_unlock(&lun->lun_lock);
2201 		ctl_set_invalid_field(ctsio, /*sks_valid*/ 1,
2202 		    /*command*/ 1, /*field*/ 2, /*bit_valid*/ 0,
2203 		    /*bit*/ 0);
2204 		ctl_done((union ctl_io *)ctsio);
2205 		return (retval);
2206 	}
2207 	list_copy = *list;
2208 	if (list->completed) {
2209 		TAILQ_REMOVE(&lun->tpc_lists, list, links);
2210 		free(list, M_CTL);
2211 	}
2212 	mtx_unlock(&lun->lun_lock);
2213 
2214 	token_len = list_copy.res_token_valid ? 2 + sizeof(list_copy.res_token) : 0;
2215 	total_len = sizeof(*data) + list_copy.sense_len + 4 + token_len;
2216 	alloc_len = scsi_4btoul(cdb->length);
2217 
2218 	ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO);
2219 
2220 	ctsio->kern_sg_entries = 0;
2221 
2222 	if (total_len < alloc_len) {
2223 		ctsio->residual = alloc_len - total_len;
2224 		ctsio->kern_data_len = total_len;
2225 		ctsio->kern_total_len = total_len;
2226 	} else {
2227 		ctsio->residual = 0;
2228 		ctsio->kern_data_len = alloc_len;
2229 		ctsio->kern_total_len = alloc_len;
2230 	}
2231 	ctsio->kern_data_resid = 0;
2232 	ctsio->kern_rel_offset = 0;
2233 
2234 	data = (struct scsi_receive_copy_status_lid4_data *)ctsio->kern_data_ptr;
2235 	scsi_ulto4b(sizeof(*data) - 4 + list_copy.sense_len +
2236 	    4 + token_len, data->available_data);
2237 	data->response_to_service_action = list_copy.service_action;
2238 	if (list_copy.completed) {
2239 		if (list_copy.error)
2240 			data->copy_command_status = RCS_CCS_ERROR;
2241 		else if (list_copy.abort)
2242 			data->copy_command_status = RCS_CCS_ABORTED;
2243 		else
2244 			data->copy_command_status = RCS_CCS_COMPLETED;
2245 	} else
2246 		data->copy_command_status = RCS_CCS_INPROG_FG;
2247 	scsi_ulto2b(list_copy.curops, data->operation_counter);
2248 	scsi_ulto4b(UINT32_MAX, data->estimated_status_update_delay);
2249 	data->transfer_count_units = RCS_TC_LBAS;
2250 	scsi_u64to8b(list_copy.cursectors, data->transfer_count);
2251 	scsi_ulto2b(list_copy.curseg, data->segments_processed);
2252 	data->length_of_the_sense_data_field = list_copy.sense_len;
2253 	data->sense_data_length = list_copy.sense_len;
2254 	memcpy(data->sense_data, &list_copy.sense_data, list_copy.sense_len);
2255 
2256 	ptr = &data->sense_data[data->length_of_the_sense_data_field];
2257 	scsi_ulto4b(token_len, &ptr[0]);
2258 	if (list_copy.res_token_valid) {
2259 		scsi_ulto2b(0, &ptr[4]);
2260 		memcpy(&ptr[6], list_copy.res_token, sizeof(list_copy.res_token));
2261 	}
2262 /*
2263 	printf("RRTI(list=%u) valid=%d\n",
2264 	    scsi_4btoul(cdb->list_identifier), list_copy.res_token_valid);
2265 */
2266 	ctl_set_success(ctsio);
2267 	ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED;
2268 	ctsio->be_move_done = ctl_config_move_done;
2269 	ctl_datamove((union ctl_io *)ctsio);
2270 	return (retval);
2271 }
2272 
2273 int
2274 ctl_report_all_rod_tokens(struct ctl_scsiio *ctsio)
2275 {
2276 	struct ctl_softc *softc;
2277 	struct ctl_lun *lun;
2278 	struct scsi_report_all_rod_tokens *cdb;
2279 	struct scsi_report_all_rod_tokens_data *data;
2280 	struct tpc_token *token;
2281 	int retval;
2282 	int alloc_len, total_len, tokens, i;
2283 
2284 	CTL_DEBUG_PRINT(("ctl_receive_rod_token_information\n"));
2285 
2286 	cdb = (struct scsi_report_all_rod_tokens *)ctsio->cdb;
2287 	lun = (struct ctl_lun *)ctsio->io_hdr.ctl_private[CTL_PRIV_LUN].ptr;
2288 	softc = lun->ctl_softc;
2289 
2290 	retval = CTL_RETVAL_COMPLETE;
2291 
2292 	tokens = 0;
2293 	mtx_lock(&softc->tpc_lock);
2294 	TAILQ_FOREACH(token, &softc->tpc_tokens, links)
2295 		tokens++;
2296 	mtx_unlock(&softc->tpc_lock);
2297 	if (tokens > 512)
2298 		tokens = 512;
2299 
2300 	total_len = sizeof(*data) + tokens * 96;
2301 	alloc_len = scsi_4btoul(cdb->length);
2302 
2303 	ctsio->kern_data_ptr = malloc(total_len, M_CTL, M_WAITOK | M_ZERO);
2304 
2305 	ctsio->kern_sg_entries = 0;
2306 
2307 	if (total_len < alloc_len) {
2308 		ctsio->residual = alloc_len - total_len;
2309 		ctsio->kern_data_len = total_len;
2310 		ctsio->kern_total_len = total_len;
2311 	} else {
2312 		ctsio->residual = 0;
2313 		ctsio->kern_data_len = alloc_len;
2314 		ctsio->kern_total_len = alloc_len;
2315 	}
2316 	ctsio->kern_data_resid = 0;
2317 	ctsio->kern_rel_offset = 0;
2318 
2319 	data = (struct scsi_report_all_rod_tokens_data *)ctsio->kern_data_ptr;
2320 	i = 0;
2321 	mtx_lock(&softc->tpc_lock);
2322 	TAILQ_FOREACH(token, &softc->tpc_tokens, links) {
2323 		if (i >= tokens)
2324 			break;
2325 		memcpy(&data->rod_management_token_list[i * 96],
2326 		    token->token, 96);
2327 		i++;
2328 	}
2329 	mtx_unlock(&softc->tpc_lock);
2330 	scsi_ulto4b(sizeof(*data) - 4 + i * 96, data->available_data);
2331 /*
2332 	printf("RART tokens=%d\n", i);
2333 */
2334 	ctl_set_success(ctsio);
2335 	ctsio->io_hdr.flags |= CTL_FLAG_ALLOCATED;
2336 	ctsio->be_move_done = ctl_config_move_done;
2337 	ctl_datamove((union ctl_io *)ctsio);
2338 	return (retval);
2339 }
2340 
2341