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88455ec4 CH |
1 | /* |
2 | * SCSI Primary Commands (SPC) parsing and emulation. | |
3 | * | |
4 | * Copyright (c) 2002, 2003, 2004, 2005 PyX Technologies, Inc. | |
5 | * Copyright (c) 2005, 2006, 2007 SBE, Inc. | |
6 | * Copyright (c) 2007-2010 Rising Tide Systems | |
7 | * Copyright (c) 2008-2010 Linux-iSCSI.org | |
8 | * | |
9 | * Nicholas A. Bellinger <nab@kernel.org> | |
10 | * | |
11 | * This program is free software; you can redistribute it and/or modify | |
12 | * it under the terms of the GNU General Public License as published by | |
13 | * the Free Software Foundation; either version 2 of the License, or | |
14 | * (at your option) any later version. | |
15 | * | |
16 | * This program is distributed in the hope that it will be useful, | |
17 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | * GNU General Public License for more details. | |
20 | * | |
21 | * You should have received a copy of the GNU General Public License | |
22 | * along with this program; if not, write to the Free Software | |
23 | * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. | |
24 | */ | |
25 | ||
26 | #include <linux/kernel.h> | |
27 | #include <linux/module.h> | |
28 | #include <asm/unaligned.h> | |
29 | ||
30 | #include <scsi/scsi.h> | |
31 | #include <scsi/scsi_tcq.h> | |
32 | ||
33 | #include <target/target_core_base.h> | |
34 | #include <target/target_core_backend.h> | |
35 | #include <target/target_core_fabric.h> | |
36 | ||
37 | #include "target_core_internal.h" | |
eba2ca45 | 38 | #include "target_core_alua.h" |
88455ec4 CH |
39 | #include "target_core_pr.h" |
40 | #include "target_core_ua.h" | |
41 | ||
42 | ||
1fd032ee CH |
43 | static void spc_fill_alua_data(struct se_port *port, unsigned char *buf) |
44 | { | |
45 | struct t10_alua_tg_pt_gp *tg_pt_gp; | |
46 | struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; | |
47 | ||
48 | /* | |
49 | * Set SCCS for MAINTENANCE_IN + REPORT_TARGET_PORT_GROUPS. | |
50 | */ | |
51 | buf[5] = 0x80; | |
52 | ||
53 | /* | |
54 | * Set TPGS field for explict and/or implict ALUA access type | |
55 | * and opteration. | |
56 | * | |
57 | * See spc4r17 section 6.4.2 Table 135 | |
58 | */ | |
59 | if (!port) | |
60 | return; | |
61 | tg_pt_gp_mem = port->sep_alua_tg_pt_gp_mem; | |
62 | if (!tg_pt_gp_mem) | |
63 | return; | |
64 | ||
65 | spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); | |
66 | tg_pt_gp = tg_pt_gp_mem->tg_pt_gp; | |
67 | if (tg_pt_gp) | |
68 | buf[5] |= tg_pt_gp->tg_pt_gp_alua_access_type; | |
69 | spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); | |
70 | } | |
71 | ||
72 | static int spc_emulate_inquiry_std(struct se_cmd *cmd, char *buf) | |
73 | { | |
74 | struct se_lun *lun = cmd->se_lun; | |
75 | struct se_device *dev = cmd->se_dev; | |
76 | ||
77 | /* Set RMB (removable media) for tape devices */ | |
78 | if (dev->transport->get_device_type(dev) == TYPE_TAPE) | |
79 | buf[1] = 0x80; | |
80 | ||
81 | buf[2] = dev->transport->get_device_rev(dev); | |
82 | ||
83 | /* | |
84 | * NORMACA and HISUP = 0, RESPONSE DATA FORMAT = 2 | |
85 | * | |
86 | * SPC4 says: | |
87 | * A RESPONSE DATA FORMAT field set to 2h indicates that the | |
88 | * standard INQUIRY data is in the format defined in this | |
89 | * standard. Response data format values less than 2h are | |
90 | * obsolete. Response data format values greater than 2h are | |
91 | * reserved. | |
92 | */ | |
93 | buf[3] = 2; | |
94 | ||
95 | /* | |
96 | * Enable SCCS and TPGS fields for Emulated ALUA | |
97 | */ | |
98 | if (dev->se_sub_dev->t10_alua.alua_type == SPC3_ALUA_EMULATED) | |
99 | spc_fill_alua_data(lun->lun_sep, buf); | |
100 | ||
101 | buf[7] = 0x2; /* CmdQue=1 */ | |
102 | ||
103 | snprintf(&buf[8], 8, "LIO-ORG"); | |
104 | snprintf(&buf[16], 16, "%s", dev->se_sub_dev->t10_wwn.model); | |
105 | snprintf(&buf[32], 4, "%s", dev->se_sub_dev->t10_wwn.revision); | |
106 | buf[4] = 31; /* Set additional length to 31 */ | |
107 | ||
108 | return 0; | |
109 | } | |
110 | ||
111 | /* unit serial number */ | |
112 | static int spc_emulate_evpd_80(struct se_cmd *cmd, unsigned char *buf) | |
113 | { | |
114 | struct se_device *dev = cmd->se_dev; | |
115 | u16 len = 0; | |
116 | ||
117 | if (dev->se_sub_dev->su_dev_flags & | |
118 | SDF_EMULATED_VPD_UNIT_SERIAL) { | |
119 | u32 unit_serial_len; | |
120 | ||
121 | unit_serial_len = strlen(dev->se_sub_dev->t10_wwn.unit_serial); | |
122 | unit_serial_len++; /* For NULL Terminator */ | |
123 | ||
124 | len += sprintf(&buf[4], "%s", | |
125 | dev->se_sub_dev->t10_wwn.unit_serial); | |
126 | len++; /* Extra Byte for NULL Terminator */ | |
127 | buf[3] = len; | |
128 | } | |
129 | return 0; | |
130 | } | |
131 | ||
132 | static void spc_parse_naa_6h_vendor_specific(struct se_device *dev, | |
133 | unsigned char *buf) | |
134 | { | |
135 | unsigned char *p = &dev->se_sub_dev->t10_wwn.unit_serial[0]; | |
136 | int cnt; | |
137 | bool next = true; | |
138 | ||
139 | /* | |
140 | * Generate up to 36 bits of VENDOR SPECIFIC IDENTIFIER starting on | |
141 | * byte 3 bit 3-0 for NAA IEEE Registered Extended DESIGNATOR field | |
142 | * format, followed by 64 bits of VENDOR SPECIFIC IDENTIFIER EXTENSION | |
143 | * to complete the payload. These are based from VPD=0x80 PRODUCT SERIAL | |
144 | * NUMBER set via vpd_unit_serial in target_core_configfs.c to ensure | |
145 | * per device uniqeness. | |
146 | */ | |
147 | for (cnt = 0; *p && cnt < 13; p++) { | |
148 | int val = hex_to_bin(*p); | |
149 | ||
150 | if (val < 0) | |
151 | continue; | |
152 | ||
153 | if (next) { | |
154 | next = false; | |
155 | buf[cnt++] |= val; | |
156 | } else { | |
157 | next = true; | |
158 | buf[cnt] = val << 4; | |
159 | } | |
160 | } | |
161 | } | |
162 | ||
163 | /* | |
164 | * Device identification VPD, for a complete list of | |
165 | * DESIGNATOR TYPEs see spc4r17 Table 459. | |
166 | */ | |
167 | static int spc_emulate_evpd_83(struct se_cmd *cmd, unsigned char *buf) | |
168 | { | |
169 | struct se_device *dev = cmd->se_dev; | |
170 | struct se_lun *lun = cmd->se_lun; | |
171 | struct se_port *port = NULL; | |
172 | struct se_portal_group *tpg = NULL; | |
173 | struct t10_alua_lu_gp_member *lu_gp_mem; | |
174 | struct t10_alua_tg_pt_gp *tg_pt_gp; | |
175 | struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; | |
176 | unsigned char *prod = &dev->se_sub_dev->t10_wwn.model[0]; | |
177 | u32 prod_len; | |
178 | u32 unit_serial_len, off = 0; | |
179 | u16 len = 0, id_len; | |
180 | ||
181 | off = 4; | |
182 | ||
183 | /* | |
184 | * NAA IEEE Registered Extended Assigned designator format, see | |
185 | * spc4r17 section 7.7.3.6.5 | |
186 | * | |
187 | * We depend upon a target_core_mod/ConfigFS provided | |
188 | * /sys/kernel/config/target/core/$HBA/$DEV/wwn/vpd_unit_serial | |
189 | * value in order to return the NAA id. | |
190 | */ | |
191 | if (!(dev->se_sub_dev->su_dev_flags & SDF_EMULATED_VPD_UNIT_SERIAL)) | |
192 | goto check_t10_vend_desc; | |
193 | ||
194 | /* CODE SET == Binary */ | |
195 | buf[off++] = 0x1; | |
196 | ||
197 | /* Set ASSOCIATION == addressed logical unit: 0)b */ | |
198 | buf[off] = 0x00; | |
199 | ||
200 | /* Identifier/Designator type == NAA identifier */ | |
201 | buf[off++] |= 0x3; | |
202 | off++; | |
203 | ||
204 | /* Identifier/Designator length */ | |
205 | buf[off++] = 0x10; | |
206 | ||
207 | /* | |
208 | * Start NAA IEEE Registered Extended Identifier/Designator | |
209 | */ | |
210 | buf[off++] = (0x6 << 4); | |
211 | ||
212 | /* | |
213 | * Use OpenFabrics IEEE Company ID: 00 14 05 | |
214 | */ | |
215 | buf[off++] = 0x01; | |
216 | buf[off++] = 0x40; | |
217 | buf[off] = (0x5 << 4); | |
218 | ||
219 | /* | |
220 | * Return ConfigFS Unit Serial Number information for | |
221 | * VENDOR_SPECIFIC_IDENTIFIER and | |
222 | * VENDOR_SPECIFIC_IDENTIFIER_EXTENTION | |
223 | */ | |
224 | spc_parse_naa_6h_vendor_specific(dev, &buf[off]); | |
225 | ||
226 | len = 20; | |
227 | off = (len + 4); | |
228 | ||
229 | check_t10_vend_desc: | |
230 | /* | |
231 | * T10 Vendor Identifier Page, see spc4r17 section 7.7.3.4 | |
232 | */ | |
233 | id_len = 8; /* For Vendor field */ | |
234 | prod_len = 4; /* For VPD Header */ | |
235 | prod_len += 8; /* For Vendor field */ | |
236 | prod_len += strlen(prod); | |
237 | prod_len++; /* For : */ | |
238 | ||
239 | if (dev->se_sub_dev->su_dev_flags & | |
240 | SDF_EMULATED_VPD_UNIT_SERIAL) { | |
241 | unit_serial_len = | |
242 | strlen(&dev->se_sub_dev->t10_wwn.unit_serial[0]); | |
243 | unit_serial_len++; /* For NULL Terminator */ | |
244 | ||
245 | id_len += sprintf(&buf[off+12], "%s:%s", prod, | |
246 | &dev->se_sub_dev->t10_wwn.unit_serial[0]); | |
247 | } | |
248 | buf[off] = 0x2; /* ASCII */ | |
249 | buf[off+1] = 0x1; /* T10 Vendor ID */ | |
250 | buf[off+2] = 0x0; | |
251 | memcpy(&buf[off+4], "LIO-ORG", 8); | |
252 | /* Extra Byte for NULL Terminator */ | |
253 | id_len++; | |
254 | /* Identifier Length */ | |
255 | buf[off+3] = id_len; | |
256 | /* Header size for Designation descriptor */ | |
257 | len += (id_len + 4); | |
258 | off += (id_len + 4); | |
259 | /* | |
260 | * struct se_port is only set for INQUIRY VPD=1 through $FABRIC_MOD | |
261 | */ | |
262 | port = lun->lun_sep; | |
263 | if (port) { | |
264 | struct t10_alua_lu_gp *lu_gp; | |
265 | u32 padding, scsi_name_len; | |
266 | u16 lu_gp_id = 0; | |
267 | u16 tg_pt_gp_id = 0; | |
268 | u16 tpgt; | |
269 | ||
270 | tpg = port->sep_tpg; | |
271 | /* | |
272 | * Relative target port identifer, see spc4r17 | |
273 | * section 7.7.3.7 | |
274 | * | |
275 | * Get the PROTOCOL IDENTIFIER as defined by spc4r17 | |
276 | * section 7.5.1 Table 362 | |
277 | */ | |
278 | buf[off] = | |
279 | (tpg->se_tpg_tfo->get_fabric_proto_ident(tpg) << 4); | |
280 | buf[off++] |= 0x1; /* CODE SET == Binary */ | |
281 | buf[off] = 0x80; /* Set PIV=1 */ | |
282 | /* Set ASSOCIATION == target port: 01b */ | |
283 | buf[off] |= 0x10; | |
284 | /* DESIGNATOR TYPE == Relative target port identifer */ | |
285 | buf[off++] |= 0x4; | |
286 | off++; /* Skip over Reserved */ | |
287 | buf[off++] = 4; /* DESIGNATOR LENGTH */ | |
288 | /* Skip over Obsolete field in RTPI payload | |
289 | * in Table 472 */ | |
290 | off += 2; | |
291 | buf[off++] = ((port->sep_rtpi >> 8) & 0xff); | |
292 | buf[off++] = (port->sep_rtpi & 0xff); | |
293 | len += 8; /* Header size + Designation descriptor */ | |
294 | /* | |
295 | * Target port group identifier, see spc4r17 | |
296 | * section 7.7.3.8 | |
297 | * | |
298 | * Get the PROTOCOL IDENTIFIER as defined by spc4r17 | |
299 | * section 7.5.1 Table 362 | |
300 | */ | |
301 | if (dev->se_sub_dev->t10_alua.alua_type != | |
302 | SPC3_ALUA_EMULATED) | |
303 | goto check_scsi_name; | |
304 | ||
305 | tg_pt_gp_mem = port->sep_alua_tg_pt_gp_mem; | |
306 | if (!tg_pt_gp_mem) | |
307 | goto check_lu_gp; | |
308 | ||
309 | spin_lock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); | |
310 | tg_pt_gp = tg_pt_gp_mem->tg_pt_gp; | |
311 | if (!tg_pt_gp) { | |
312 | spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); | |
313 | goto check_lu_gp; | |
314 | } | |
315 | tg_pt_gp_id = tg_pt_gp->tg_pt_gp_id; | |
316 | spin_unlock(&tg_pt_gp_mem->tg_pt_gp_mem_lock); | |
317 | ||
318 | buf[off] = | |
319 | (tpg->se_tpg_tfo->get_fabric_proto_ident(tpg) << 4); | |
320 | buf[off++] |= 0x1; /* CODE SET == Binary */ | |
321 | buf[off] = 0x80; /* Set PIV=1 */ | |
322 | /* Set ASSOCIATION == target port: 01b */ | |
323 | buf[off] |= 0x10; | |
324 | /* DESIGNATOR TYPE == Target port group identifier */ | |
325 | buf[off++] |= 0x5; | |
326 | off++; /* Skip over Reserved */ | |
327 | buf[off++] = 4; /* DESIGNATOR LENGTH */ | |
328 | off += 2; /* Skip over Reserved Field */ | |
329 | buf[off++] = ((tg_pt_gp_id >> 8) & 0xff); | |
330 | buf[off++] = (tg_pt_gp_id & 0xff); | |
331 | len += 8; /* Header size + Designation descriptor */ | |
332 | /* | |
333 | * Logical Unit Group identifier, see spc4r17 | |
334 | * section 7.7.3.8 | |
335 | */ | |
336 | check_lu_gp: | |
337 | lu_gp_mem = dev->dev_alua_lu_gp_mem; | |
338 | if (!lu_gp_mem) | |
339 | goto check_scsi_name; | |
340 | ||
341 | spin_lock(&lu_gp_mem->lu_gp_mem_lock); | |
342 | lu_gp = lu_gp_mem->lu_gp; | |
343 | if (!lu_gp) { | |
344 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
345 | goto check_scsi_name; | |
346 | } | |
347 | lu_gp_id = lu_gp->lu_gp_id; | |
348 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); | |
349 | ||
350 | buf[off++] |= 0x1; /* CODE SET == Binary */ | |
351 | /* DESIGNATOR TYPE == Logical Unit Group identifier */ | |
352 | buf[off++] |= 0x6; | |
353 | off++; /* Skip over Reserved */ | |
354 | buf[off++] = 4; /* DESIGNATOR LENGTH */ | |
355 | off += 2; /* Skip over Reserved Field */ | |
356 | buf[off++] = ((lu_gp_id >> 8) & 0xff); | |
357 | buf[off++] = (lu_gp_id & 0xff); | |
358 | len += 8; /* Header size + Designation descriptor */ | |
359 | /* | |
360 | * SCSI name string designator, see spc4r17 | |
361 | * section 7.7.3.11 | |
362 | * | |
363 | * Get the PROTOCOL IDENTIFIER as defined by spc4r17 | |
364 | * section 7.5.1 Table 362 | |
365 | */ | |
366 | check_scsi_name: | |
367 | scsi_name_len = strlen(tpg->se_tpg_tfo->tpg_get_wwn(tpg)); | |
368 | /* UTF-8 ",t,0x<16-bit TPGT>" + NULL Terminator */ | |
369 | scsi_name_len += 10; | |
370 | /* Check for 4-byte padding */ | |
371 | padding = ((-scsi_name_len) & 3); | |
372 | if (padding != 0) | |
373 | scsi_name_len += padding; | |
374 | /* Header size + Designation descriptor */ | |
375 | scsi_name_len += 4; | |
376 | ||
377 | buf[off] = | |
378 | (tpg->se_tpg_tfo->get_fabric_proto_ident(tpg) << 4); | |
379 | buf[off++] |= 0x3; /* CODE SET == UTF-8 */ | |
380 | buf[off] = 0x80; /* Set PIV=1 */ | |
381 | /* Set ASSOCIATION == target port: 01b */ | |
382 | buf[off] |= 0x10; | |
383 | /* DESIGNATOR TYPE == SCSI name string */ | |
384 | buf[off++] |= 0x8; | |
385 | off += 2; /* Skip over Reserved and length */ | |
386 | /* | |
387 | * SCSI name string identifer containing, $FABRIC_MOD | |
388 | * dependent information. For LIO-Target and iSCSI | |
389 | * Target Port, this means "<iSCSI name>,t,0x<TPGT> in | |
390 | * UTF-8 encoding. | |
391 | */ | |
392 | tpgt = tpg->se_tpg_tfo->tpg_get_tag(tpg); | |
393 | scsi_name_len = sprintf(&buf[off], "%s,t,0x%04x", | |
394 | tpg->se_tpg_tfo->tpg_get_wwn(tpg), tpgt); | |
395 | scsi_name_len += 1 /* Include NULL terminator */; | |
396 | /* | |
397 | * The null-terminated, null-padded (see 4.4.2) SCSI | |
398 | * NAME STRING field contains a UTF-8 format string. | |
399 | * The number of bytes in the SCSI NAME STRING field | |
400 | * (i.e., the value in the DESIGNATOR LENGTH field) | |
401 | * shall be no larger than 256 and shall be a multiple | |
402 | * of four. | |
403 | */ | |
404 | if (padding) | |
405 | scsi_name_len += padding; | |
406 | ||
407 | buf[off-1] = scsi_name_len; | |
408 | off += scsi_name_len; | |
409 | /* Header size + Designation descriptor */ | |
410 | len += (scsi_name_len + 4); | |
411 | } | |
412 | buf[2] = ((len >> 8) & 0xff); | |
413 | buf[3] = (len & 0xff); /* Page Length for VPD 0x83 */ | |
414 | return 0; | |
415 | } | |
416 | ||
417 | /* Extended INQUIRY Data VPD Page */ | |
418 | static int spc_emulate_evpd_86(struct se_cmd *cmd, unsigned char *buf) | |
419 | { | |
420 | buf[3] = 0x3c; | |
421 | /* Set HEADSUP, ORDSUP, SIMPSUP */ | |
422 | buf[5] = 0x07; | |
423 | ||
424 | /* If WriteCache emulation is enabled, set V_SUP */ | |
425 | if (cmd->se_dev->se_sub_dev->se_dev_attrib.emulate_write_cache > 0) | |
426 | buf[6] = 0x01; | |
427 | return 0; | |
428 | } | |
429 | ||
430 | /* Block Limits VPD page */ | |
431 | static int spc_emulate_evpd_b0(struct se_cmd *cmd, unsigned char *buf) | |
432 | { | |
433 | struct se_device *dev = cmd->se_dev; | |
434 | u32 max_sectors; | |
435 | int have_tp = 0; | |
436 | ||
437 | /* | |
438 | * Following spc3r22 section 6.5.3 Block Limits VPD page, when | |
439 | * emulate_tpu=1 or emulate_tpws=1 we will be expect a | |
440 | * different page length for Thin Provisioning. | |
441 | */ | |
442 | if (dev->se_sub_dev->se_dev_attrib.emulate_tpu || dev->se_sub_dev->se_dev_attrib.emulate_tpws) | |
443 | have_tp = 1; | |
444 | ||
445 | buf[0] = dev->transport->get_device_type(dev); | |
446 | buf[3] = have_tp ? 0x3c : 0x10; | |
447 | ||
448 | /* Set WSNZ to 1 */ | |
449 | buf[4] = 0x01; | |
450 | ||
451 | /* | |
452 | * Set OPTIMAL TRANSFER LENGTH GRANULARITY | |
453 | */ | |
454 | put_unaligned_be16(1, &buf[6]); | |
455 | ||
456 | /* | |
457 | * Set MAXIMUM TRANSFER LENGTH | |
458 | */ | |
459 | max_sectors = min(dev->se_sub_dev->se_dev_attrib.fabric_max_sectors, | |
460 | dev->se_sub_dev->se_dev_attrib.hw_max_sectors); | |
461 | put_unaligned_be32(max_sectors, &buf[8]); | |
462 | ||
463 | /* | |
464 | * Set OPTIMAL TRANSFER LENGTH | |
465 | */ | |
466 | put_unaligned_be32(dev->se_sub_dev->se_dev_attrib.optimal_sectors, &buf[12]); | |
467 | ||
468 | /* | |
469 | * Exit now if we don't support TP. | |
470 | */ | |
471 | if (!have_tp) | |
472 | return 0; | |
473 | ||
474 | /* | |
475 | * Set MAXIMUM UNMAP LBA COUNT | |
476 | */ | |
477 | put_unaligned_be32(dev->se_sub_dev->se_dev_attrib.max_unmap_lba_count, &buf[20]); | |
478 | ||
479 | /* | |
480 | * Set MAXIMUM UNMAP BLOCK DESCRIPTOR COUNT | |
481 | */ | |
482 | put_unaligned_be32(dev->se_sub_dev->se_dev_attrib.max_unmap_block_desc_count, | |
483 | &buf[24]); | |
484 | ||
485 | /* | |
486 | * Set OPTIMAL UNMAP GRANULARITY | |
487 | */ | |
488 | put_unaligned_be32(dev->se_sub_dev->se_dev_attrib.unmap_granularity, &buf[28]); | |
489 | ||
490 | /* | |
491 | * UNMAP GRANULARITY ALIGNMENT | |
492 | */ | |
493 | put_unaligned_be32(dev->se_sub_dev->se_dev_attrib.unmap_granularity_alignment, | |
494 | &buf[32]); | |
495 | if (dev->se_sub_dev->se_dev_attrib.unmap_granularity_alignment != 0) | |
496 | buf[32] |= 0x80; /* Set the UGAVALID bit */ | |
497 | ||
498 | return 0; | |
499 | } | |
500 | ||
501 | /* Block Device Characteristics VPD page */ | |
502 | static int spc_emulate_evpd_b1(struct se_cmd *cmd, unsigned char *buf) | |
503 | { | |
504 | struct se_device *dev = cmd->se_dev; | |
505 | ||
506 | buf[0] = dev->transport->get_device_type(dev); | |
507 | buf[3] = 0x3c; | |
508 | buf[5] = dev->se_sub_dev->se_dev_attrib.is_nonrot ? 1 : 0; | |
509 | ||
510 | return 0; | |
511 | } | |
512 | ||
513 | /* Thin Provisioning VPD */ | |
514 | static int spc_emulate_evpd_b2(struct se_cmd *cmd, unsigned char *buf) | |
515 | { | |
516 | struct se_device *dev = cmd->se_dev; | |
517 | ||
518 | /* | |
519 | * From spc3r22 section 6.5.4 Thin Provisioning VPD page: | |
520 | * | |
521 | * The PAGE LENGTH field is defined in SPC-4. If the DP bit is set to | |
522 | * zero, then the page length shall be set to 0004h. If the DP bit | |
523 | * is set to one, then the page length shall be set to the value | |
524 | * defined in table 162. | |
525 | */ | |
526 | buf[0] = dev->transport->get_device_type(dev); | |
527 | ||
528 | /* | |
529 | * Set Hardcoded length mentioned above for DP=0 | |
530 | */ | |
531 | put_unaligned_be16(0x0004, &buf[2]); | |
532 | ||
533 | /* | |
534 | * The THRESHOLD EXPONENT field indicates the threshold set size in | |
535 | * LBAs as a power of 2 (i.e., the threshold set size is equal to | |
536 | * 2(threshold exponent)). | |
537 | * | |
538 | * Note that this is currently set to 0x00 as mkp says it will be | |
539 | * changing again. We can enable this once it has settled in T10 | |
540 | * and is actually used by Linux/SCSI ML code. | |
541 | */ | |
542 | buf[4] = 0x00; | |
543 | ||
544 | /* | |
545 | * A TPU bit set to one indicates that the device server supports | |
546 | * the UNMAP command (see 5.25). A TPU bit set to zero indicates | |
547 | * that the device server does not support the UNMAP command. | |
548 | */ | |
549 | if (dev->se_sub_dev->se_dev_attrib.emulate_tpu != 0) | |
550 | buf[5] = 0x80; | |
551 | ||
552 | /* | |
553 | * A TPWS bit set to one indicates that the device server supports | |
554 | * the use of the WRITE SAME (16) command (see 5.42) to unmap LBAs. | |
555 | * A TPWS bit set to zero indicates that the device server does not | |
556 | * support the use of the WRITE SAME (16) command to unmap LBAs. | |
557 | */ | |
558 | if (dev->se_sub_dev->se_dev_attrib.emulate_tpws != 0) | |
559 | buf[5] |= 0x40; | |
560 | ||
561 | return 0; | |
562 | } | |
563 | ||
564 | static int spc_emulate_evpd_00(struct se_cmd *cmd, unsigned char *buf); | |
565 | ||
566 | static struct { | |
567 | uint8_t page; | |
568 | int (*emulate)(struct se_cmd *, unsigned char *); | |
569 | } evpd_handlers[] = { | |
570 | { .page = 0x00, .emulate = spc_emulate_evpd_00 }, | |
571 | { .page = 0x80, .emulate = spc_emulate_evpd_80 }, | |
572 | { .page = 0x83, .emulate = spc_emulate_evpd_83 }, | |
573 | { .page = 0x86, .emulate = spc_emulate_evpd_86 }, | |
574 | { .page = 0xb0, .emulate = spc_emulate_evpd_b0 }, | |
575 | { .page = 0xb1, .emulate = spc_emulate_evpd_b1 }, | |
576 | { .page = 0xb2, .emulate = spc_emulate_evpd_b2 }, | |
577 | }; | |
578 | ||
579 | /* supported vital product data pages */ | |
580 | static int spc_emulate_evpd_00(struct se_cmd *cmd, unsigned char *buf) | |
581 | { | |
582 | int p; | |
583 | ||
584 | /* | |
585 | * Only report the INQUIRY EVPD=1 pages after a valid NAA | |
586 | * Registered Extended LUN WWN has been set via ConfigFS | |
587 | * during device creation/restart. | |
588 | */ | |
589 | if (cmd->se_dev->se_sub_dev->su_dev_flags & | |
590 | SDF_EMULATED_VPD_UNIT_SERIAL) { | |
591 | buf[3] = ARRAY_SIZE(evpd_handlers); | |
592 | for (p = 0; p < ARRAY_SIZE(evpd_handlers); ++p) | |
593 | buf[p + 4] = evpd_handlers[p].page; | |
594 | } | |
595 | ||
596 | return 0; | |
597 | } | |
598 | ||
599 | static int spc_emulate_inquiry(struct se_cmd *cmd) | |
600 | { | |
601 | struct se_device *dev = cmd->se_dev; | |
602 | struct se_portal_group *tpg = cmd->se_lun->lun_sep->sep_tpg; | |
ffe7b0e9 | 603 | unsigned char *rbuf; |
1fd032ee | 604 | unsigned char *cdb = cmd->t_task_cdb; |
ffe7b0e9 | 605 | unsigned char buf[SE_INQUIRY_BUF]; |
1fd032ee CH |
606 | int p, ret; |
607 | ||
1fd032ee CH |
608 | if (dev == tpg->tpg_virt_lun0.lun_se_dev) |
609 | buf[0] = 0x3f; /* Not connected */ | |
610 | else | |
611 | buf[0] = dev->transport->get_device_type(dev); | |
612 | ||
613 | if (!(cdb[1] & 0x1)) { | |
614 | if (cdb[2]) { | |
615 | pr_err("INQUIRY with EVPD==0 but PAGE CODE=%02x\n", | |
616 | cdb[2]); | |
617 | cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD; | |
618 | ret = -EINVAL; | |
619 | goto out; | |
620 | } | |
621 | ||
622 | ret = spc_emulate_inquiry_std(cmd, buf); | |
623 | goto out; | |
624 | } | |
625 | ||
626 | for (p = 0; p < ARRAY_SIZE(evpd_handlers); ++p) { | |
627 | if (cdb[2] == evpd_handlers[p].page) { | |
628 | buf[1] = cdb[2]; | |
629 | ret = evpd_handlers[p].emulate(cmd, buf); | |
630 | goto out; | |
631 | } | |
632 | } | |
633 | ||
634 | pr_err("Unknown VPD Code: 0x%02x\n", cdb[2]); | |
635 | cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD; | |
636 | ret = -EINVAL; | |
637 | ||
638 | out: | |
ffe7b0e9 PB |
639 | rbuf = transport_kmap_data_sg(cmd); |
640 | if (rbuf) { | |
641 | memcpy(rbuf, buf, min_t(u32, sizeof(buf), cmd->data_length)); | |
642 | transport_kunmap_data_sg(cmd); | |
1fd032ee | 643 | } |
1fd032ee CH |
644 | |
645 | if (!ret) | |
646 | target_complete_cmd(cmd, GOOD); | |
647 | return ret; | |
648 | } | |
649 | ||
650 | static int spc_modesense_rwrecovery(unsigned char *p) | |
651 | { | |
652 | p[0] = 0x01; | |
653 | p[1] = 0x0a; | |
654 | ||
655 | return 12; | |
656 | } | |
657 | ||
658 | static int spc_modesense_control(struct se_device *dev, unsigned char *p) | |
659 | { | |
660 | p[0] = 0x0a; | |
661 | p[1] = 0x0a; | |
662 | p[2] = 2; | |
663 | /* | |
664 | * From spc4r23, 7.4.7 Control mode page | |
665 | * | |
666 | * The QUEUE ALGORITHM MODIFIER field (see table 368) specifies | |
667 | * restrictions on the algorithm used for reordering commands | |
668 | * having the SIMPLE task attribute (see SAM-4). | |
669 | * | |
670 | * Table 368 -- QUEUE ALGORITHM MODIFIER field | |
671 | * Code Description | |
672 | * 0h Restricted reordering | |
673 | * 1h Unrestricted reordering allowed | |
674 | * 2h to 7h Reserved | |
675 | * 8h to Fh Vendor specific | |
676 | * | |
677 | * A value of zero in the QUEUE ALGORITHM MODIFIER field specifies that | |
678 | * the device server shall order the processing sequence of commands | |
679 | * having the SIMPLE task attribute such that data integrity is maintained | |
680 | * for that I_T nexus (i.e., if the transmission of new SCSI transport protocol | |
681 | * requests is halted at any time, the final value of all data observable | |
682 | * on the medium shall be the same as if all the commands had been processed | |
683 | * with the ORDERED task attribute). | |
684 | * | |
685 | * A value of one in the QUEUE ALGORITHM MODIFIER field specifies that the | |
686 | * device server may reorder the processing sequence of commands having the | |
687 | * SIMPLE task attribute in any manner. Any data integrity exposures related to | |
688 | * command sequence order shall be explicitly handled by the application client | |
689 | * through the selection of appropriate ommands and task attributes. | |
690 | */ | |
691 | p[3] = (dev->se_sub_dev->se_dev_attrib.emulate_rest_reord == 1) ? 0x00 : 0x10; | |
692 | /* | |
693 | * From spc4r17, section 7.4.6 Control mode Page | |
694 | * | |
695 | * Unit Attention interlocks control (UN_INTLCK_CTRL) to code 00b | |
696 | * | |
697 | * 00b: The logical unit shall clear any unit attention condition | |
698 | * reported in the same I_T_L_Q nexus transaction as a CHECK CONDITION | |
699 | * status and shall not establish a unit attention condition when a com- | |
700 | * mand is completed with BUSY, TASK SET FULL, or RESERVATION CONFLICT | |
701 | * status. | |
702 | * | |
703 | * 10b: The logical unit shall not clear any unit attention condition | |
704 | * reported in the same I_T_L_Q nexus transaction as a CHECK CONDITION | |
705 | * status and shall not establish a unit attention condition when | |
706 | * a command is completed with BUSY, TASK SET FULL, or RESERVATION | |
707 | * CONFLICT status. | |
708 | * | |
709 | * 11b a The logical unit shall not clear any unit attention condition | |
710 | * reported in the same I_T_L_Q nexus transaction as a CHECK CONDITION | |
711 | * status and shall establish a unit attention condition for the | |
712 | * initiator port associated with the I_T nexus on which the BUSY, | |
713 | * TASK SET FULL, or RESERVATION CONFLICT status is being returned. | |
714 | * Depending on the status, the additional sense code shall be set to | |
715 | * PREVIOUS BUSY STATUS, PREVIOUS TASK SET FULL STATUS, or PREVIOUS | |
716 | * RESERVATION CONFLICT STATUS. Until it is cleared by a REQUEST SENSE | |
717 | * command, a unit attention condition shall be established only once | |
718 | * for a BUSY, TASK SET FULL, or RESERVATION CONFLICT status regardless | |
719 | * to the number of commands completed with one of those status codes. | |
720 | */ | |
721 | p[4] = (dev->se_sub_dev->se_dev_attrib.emulate_ua_intlck_ctrl == 2) ? 0x30 : | |
722 | (dev->se_sub_dev->se_dev_attrib.emulate_ua_intlck_ctrl == 1) ? 0x20 : 0x00; | |
723 | /* | |
724 | * From spc4r17, section 7.4.6 Control mode Page | |
725 | * | |
726 | * Task Aborted Status (TAS) bit set to zero. | |
727 | * | |
728 | * A task aborted status (TAS) bit set to zero specifies that aborted | |
729 | * tasks shall be terminated by the device server without any response | |
730 | * to the application client. A TAS bit set to one specifies that tasks | |
731 | * aborted by the actions of an I_T nexus other than the I_T nexus on | |
732 | * which the command was received shall be completed with TASK ABORTED | |
733 | * status (see SAM-4). | |
734 | */ | |
735 | p[5] = (dev->se_sub_dev->se_dev_attrib.emulate_tas) ? 0x40 : 0x00; | |
736 | p[8] = 0xff; | |
737 | p[9] = 0xff; | |
738 | p[11] = 30; | |
739 | ||
740 | return 12; | |
741 | } | |
742 | ||
743 | static int spc_modesense_caching(struct se_device *dev, unsigned char *p) | |
744 | { | |
745 | p[0] = 0x08; | |
746 | p[1] = 0x12; | |
747 | if (dev->se_sub_dev->se_dev_attrib.emulate_write_cache > 0) | |
748 | p[2] = 0x04; /* Write Cache Enable */ | |
749 | p[12] = 0x20; /* Disabled Read Ahead */ | |
750 | ||
751 | return 20; | |
752 | } | |
753 | ||
754 | static void spc_modesense_write_protect(unsigned char *buf, int type) | |
755 | { | |
756 | /* | |
757 | * I believe that the WP bit (bit 7) in the mode header is the same for | |
758 | * all device types.. | |
759 | */ | |
760 | switch (type) { | |
761 | case TYPE_DISK: | |
762 | case TYPE_TAPE: | |
763 | default: | |
764 | buf[0] |= 0x80; /* WP bit */ | |
765 | break; | |
766 | } | |
767 | } | |
768 | ||
769 | static void spc_modesense_dpofua(unsigned char *buf, int type) | |
770 | { | |
771 | switch (type) { | |
772 | case TYPE_DISK: | |
773 | buf[0] |= 0x10; /* DPOFUA bit */ | |
774 | break; | |
775 | default: | |
776 | break; | |
777 | } | |
778 | } | |
779 | ||
780 | static int spc_emulate_modesense(struct se_cmd *cmd) | |
781 | { | |
782 | struct se_device *dev = cmd->se_dev; | |
783 | char *cdb = cmd->t_task_cdb; | |
784 | unsigned char *rbuf; | |
785 | int type = dev->transport->get_device_type(dev); | |
786 | int ten = (cmd->t_task_cdb[0] == MODE_SENSE_10); | |
7a3f369c | 787 | u32 offset = ten ? 8 : 4; |
1fd032ee CH |
788 | int length = 0; |
789 | unsigned char buf[SE_MODE_PAGE_BUF]; | |
790 | ||
791 | memset(buf, 0, SE_MODE_PAGE_BUF); | |
792 | ||
793 | switch (cdb[2] & 0x3f) { | |
794 | case 0x01: | |
795 | length = spc_modesense_rwrecovery(&buf[offset]); | |
796 | break; | |
797 | case 0x08: | |
798 | length = spc_modesense_caching(dev, &buf[offset]); | |
799 | break; | |
800 | case 0x0a: | |
801 | length = spc_modesense_control(dev, &buf[offset]); | |
802 | break; | |
803 | case 0x3f: | |
804 | length = spc_modesense_rwrecovery(&buf[offset]); | |
805 | length += spc_modesense_caching(dev, &buf[offset+length]); | |
806 | length += spc_modesense_control(dev, &buf[offset+length]); | |
807 | break; | |
808 | default: | |
809 | pr_err("MODE SENSE: unimplemented page/subpage: 0x%02x/0x%02x\n", | |
810 | cdb[2] & 0x3f, cdb[3]); | |
811 | cmd->scsi_sense_reason = TCM_UNKNOWN_MODE_PAGE; | |
812 | return -EINVAL; | |
813 | } | |
814 | offset += length; | |
815 | ||
816 | if (ten) { | |
817 | offset -= 2; | |
818 | buf[0] = (offset >> 8) & 0xff; | |
819 | buf[1] = offset & 0xff; | |
7a3f369c | 820 | offset += 2; |
1fd032ee CH |
821 | |
822 | if ((cmd->se_lun->lun_access & TRANSPORT_LUNFLAGS_READ_ONLY) || | |
823 | (cmd->se_deve && | |
824 | (cmd->se_deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY))) | |
825 | spc_modesense_write_protect(&buf[3], type); | |
826 | ||
827 | if ((dev->se_sub_dev->se_dev_attrib.emulate_write_cache > 0) && | |
828 | (dev->se_sub_dev->se_dev_attrib.emulate_fua_write > 0)) | |
829 | spc_modesense_dpofua(&buf[3], type); | |
1fd032ee CH |
830 | } else { |
831 | offset -= 1; | |
832 | buf[0] = offset & 0xff; | |
7a3f369c | 833 | offset += 1; |
1fd032ee CH |
834 | |
835 | if ((cmd->se_lun->lun_access & TRANSPORT_LUNFLAGS_READ_ONLY) || | |
836 | (cmd->se_deve && | |
837 | (cmd->se_deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY))) | |
838 | spc_modesense_write_protect(&buf[2], type); | |
839 | ||
840 | if ((dev->se_sub_dev->se_dev_attrib.emulate_write_cache > 0) && | |
841 | (dev->se_sub_dev->se_dev_attrib.emulate_fua_write > 0)) | |
842 | spc_modesense_dpofua(&buf[2], type); | |
1fd032ee CH |
843 | } |
844 | ||
845 | rbuf = transport_kmap_data_sg(cmd); | |
7a3f369c PB |
846 | if (rbuf) { |
847 | memcpy(rbuf, buf, min(offset, cmd->data_length)); | |
848 | transport_kunmap_data_sg(cmd); | |
849 | } | |
1fd032ee CH |
850 | |
851 | target_complete_cmd(cmd, GOOD); | |
852 | return 0; | |
853 | } | |
854 | ||
855 | static int spc_emulate_request_sense(struct se_cmd *cmd) | |
856 | { | |
857 | unsigned char *cdb = cmd->t_task_cdb; | |
32a8811f | 858 | unsigned char *rbuf; |
1fd032ee | 859 | u8 ua_asc = 0, ua_ascq = 0; |
32a8811f PB |
860 | unsigned char buf[SE_SENSE_BUF]; |
861 | ||
862 | memset(buf, 0, SE_SENSE_BUF); | |
1fd032ee CH |
863 | |
864 | if (cdb[1] & 0x01) { | |
865 | pr_err("REQUEST_SENSE description emulation not" | |
866 | " supported\n"); | |
867 | cmd->scsi_sense_reason = TCM_INVALID_CDB_FIELD; | |
868 | return -ENOSYS; | |
869 | } | |
870 | ||
32a8811f PB |
871 | rbuf = transport_kmap_data_sg(cmd); |
872 | if (cmd->scsi_sense_reason != 0) { | |
873 | /* | |
874 | * Out of memory. We will fail with CHECK CONDITION, so | |
875 | * we must not clear the unit attention condition. | |
876 | */ | |
877 | target_complete_cmd(cmd, CHECK_CONDITION); | |
878 | return 0; | |
879 | } else if (!core_scsi3_ua_clear_for_request_sense(cmd, &ua_asc, &ua_ascq)) { | |
1fd032ee CH |
880 | /* |
881 | * CURRENT ERROR, UNIT ATTENTION | |
882 | */ | |
883 | buf[0] = 0x70; | |
884 | buf[SPC_SENSE_KEY_OFFSET] = UNIT_ATTENTION; | |
885 | ||
1fd032ee CH |
886 | /* |
887 | * The Additional Sense Code (ASC) from the UNIT ATTENTION | |
888 | */ | |
889 | buf[SPC_ASC_KEY_OFFSET] = ua_asc; | |
890 | buf[SPC_ASCQ_KEY_OFFSET] = ua_ascq; | |
891 | buf[7] = 0x0A; | |
892 | } else { | |
893 | /* | |
894 | * CURRENT ERROR, NO SENSE | |
895 | */ | |
896 | buf[0] = 0x70; | |
897 | buf[SPC_SENSE_KEY_OFFSET] = NO_SENSE; | |
898 | ||
1fd032ee CH |
899 | /* |
900 | * NO ADDITIONAL SENSE INFORMATION | |
901 | */ | |
902 | buf[SPC_ASC_KEY_OFFSET] = 0x00; | |
903 | buf[7] = 0x0A; | |
904 | } | |
905 | ||
32a8811f PB |
906 | if (rbuf) { |
907 | memcpy(rbuf, buf, min_t(u32, sizeof(buf), cmd->data_length)); | |
908 | transport_kunmap_data_sg(cmd); | |
909 | } | |
910 | ||
1fd032ee CH |
911 | target_complete_cmd(cmd, GOOD); |
912 | return 0; | |
913 | } | |
914 | ||
915 | static int spc_emulate_testunitready(struct se_cmd *cmd) | |
916 | { | |
917 | target_complete_cmd(cmd, GOOD); | |
918 | return 0; | |
919 | } | |
920 | ||
921 | int spc_parse_cdb(struct se_cmd *cmd, unsigned int *size) | |
88455ec4 | 922 | { |
eba2ca45 NB |
923 | struct se_device *dev = cmd->se_dev; |
924 | struct se_subsystem_dev *su_dev = dev->se_sub_dev; | |
88455ec4 CH |
925 | unsigned char *cdb = cmd->t_task_cdb; |
926 | ||
927 | switch (cdb[0]) { | |
928 | case MODE_SELECT: | |
929 | *size = cdb[4]; | |
930 | break; | |
931 | case MODE_SELECT_10: | |
932 | *size = (cdb[7] << 8) + cdb[8]; | |
933 | break; | |
934 | case MODE_SENSE: | |
935 | *size = cdb[4]; | |
1fd032ee | 936 | cmd->execute_cmd = spc_emulate_modesense; |
88455ec4 CH |
937 | break; |
938 | case MODE_SENSE_10: | |
939 | *size = (cdb[7] << 8) + cdb[8]; | |
1fd032ee | 940 | cmd->execute_cmd = spc_emulate_modesense; |
88455ec4 CH |
941 | break; |
942 | case LOG_SELECT: | |
943 | case LOG_SENSE: | |
944 | *size = (cdb[7] << 8) + cdb[8]; | |
945 | break; | |
946 | case PERSISTENT_RESERVE_IN: | |
947 | if (su_dev->t10_pr.res_type == SPC3_PERSISTENT_RESERVATIONS) | |
948 | cmd->execute_cmd = target_scsi3_emulate_pr_in; | |
949 | *size = (cdb[7] << 8) + cdb[8]; | |
950 | break; | |
951 | case PERSISTENT_RESERVE_OUT: | |
952 | if (su_dev->t10_pr.res_type == SPC3_PERSISTENT_RESERVATIONS) | |
953 | cmd->execute_cmd = target_scsi3_emulate_pr_out; | |
954 | *size = (cdb[7] << 8) + cdb[8]; | |
955 | break; | |
956 | case RELEASE: | |
957 | case RELEASE_10: | |
958 | if (cdb[0] == RELEASE_10) | |
959 | *size = (cdb[7] << 8) | cdb[8]; | |
960 | else | |
961 | *size = cmd->data_length; | |
962 | ||
963 | if (su_dev->t10_pr.res_type != SPC_PASSTHROUGH) | |
964 | cmd->execute_cmd = target_scsi2_reservation_release; | |
965 | break; | |
966 | case RESERVE: | |
967 | case RESERVE_10: | |
968 | /* | |
969 | * The SPC-2 RESERVE does not contain a size in the SCSI CDB. | |
970 | * Assume the passthrough or $FABRIC_MOD will tell us about it. | |
971 | */ | |
972 | if (cdb[0] == RESERVE_10) | |
973 | *size = (cdb[7] << 8) | cdb[8]; | |
974 | else | |
975 | *size = cmd->data_length; | |
976 | ||
977 | /* | |
978 | * Setup the legacy emulated handler for SPC-2 and | |
979 | * >= SPC-3 compatible reservation handling (CRH=1) | |
980 | * Otherwise, we assume the underlying SCSI logic is | |
981 | * is running in SPC_PASSTHROUGH, and wants reservations | |
982 | * emulation disabled. | |
983 | */ | |
984 | if (su_dev->t10_pr.res_type != SPC_PASSTHROUGH) | |
985 | cmd->execute_cmd = target_scsi2_reservation_reserve; | |
986 | break; | |
987 | case REQUEST_SENSE: | |
988 | *size = cdb[4]; | |
1fd032ee | 989 | cmd->execute_cmd = spc_emulate_request_sense; |
88455ec4 CH |
990 | break; |
991 | case INQUIRY: | |
992 | *size = (cdb[3] << 8) + cdb[4]; | |
993 | ||
994 | /* | |
995 | * Do implict HEAD_OF_QUEUE processing for INQUIRY. | |
996 | * See spc4r17 section 5.3 | |
997 | */ | |
998 | if (cmd->se_dev->dev_task_attr_type == SAM_TASK_ATTR_EMULATED) | |
999 | cmd->sam_task_attr = MSG_HEAD_TAG; | |
1fd032ee | 1000 | cmd->execute_cmd = spc_emulate_inquiry; |
88455ec4 CH |
1001 | break; |
1002 | case SECURITY_PROTOCOL_IN: | |
1003 | case SECURITY_PROTOCOL_OUT: | |
1004 | *size = (cdb[6] << 24) | (cdb[7] << 16) | (cdb[8] << 8) | cdb[9]; | |
1005 | break; | |
1006 | case EXTENDED_COPY: | |
1007 | case READ_ATTRIBUTE: | |
1008 | case RECEIVE_COPY_RESULTS: | |
1009 | case WRITE_ATTRIBUTE: | |
1010 | *size = (cdb[10] << 24) | (cdb[11] << 16) | | |
1011 | (cdb[12] << 8) | cdb[13]; | |
1012 | break; | |
1013 | case RECEIVE_DIAGNOSTIC: | |
1014 | case SEND_DIAGNOSTIC: | |
1015 | *size = (cdb[3] << 8) | cdb[4]; | |
1016 | break; | |
1017 | case WRITE_BUFFER: | |
1018 | *size = (cdb[6] << 16) + (cdb[7] << 8) + cdb[8]; | |
1019 | break; | |
1020 | case REPORT_LUNS: | |
1021 | cmd->execute_cmd = target_report_luns; | |
1022 | *size = (cdb[6] << 24) | (cdb[7] << 16) | (cdb[8] << 8) | cdb[9]; | |
1023 | /* | |
1024 | * Do implict HEAD_OF_QUEUE processing for REPORT_LUNS | |
1025 | * See spc4r17 section 5.3 | |
1026 | */ | |
1027 | if (cmd->se_dev->dev_task_attr_type == SAM_TASK_ATTR_EMULATED) | |
1028 | cmd->sam_task_attr = MSG_HEAD_TAG; | |
1029 | break; | |
1030 | case TEST_UNIT_READY: | |
1fd032ee | 1031 | cmd->execute_cmd = spc_emulate_testunitready; |
d6e0175c | 1032 | *size = 0; |
88455ec4 | 1033 | break; |
eba2ca45 NB |
1034 | case MAINTENANCE_IN: |
1035 | if (dev->transport->get_device_type(dev) != TYPE_ROM) { | |
1036 | /* | |
1037 | * MAINTENANCE_IN from SCC-2 | |
1038 | * Check for emulated MI_REPORT_TARGET_PGS | |
1039 | */ | |
1040 | if ((cdb[1] & 0x1f) == MI_REPORT_TARGET_PGS && | |
1041 | su_dev->t10_alua.alua_type == SPC3_ALUA_EMULATED) { | |
1042 | cmd->execute_cmd = | |
1043 | target_emulate_report_target_port_groups; | |
1044 | } | |
1045 | *size = get_unaligned_be32(&cdb[6]); | |
1046 | } else { | |
1047 | /* | |
1048 | * GPCMD_SEND_KEY from multi media commands | |
1049 | */ | |
1050 | *size = get_unaligned_be16(&cdb[8]); | |
1051 | } | |
1052 | break; | |
1053 | case MAINTENANCE_OUT: | |
1054 | if (dev->transport->get_device_type(dev) != TYPE_ROM) { | |
1055 | /* | |
1056 | * MAINTENANCE_OUT from SCC-2 | |
1057 | * Check for emulated MO_SET_TARGET_PGS. | |
1058 | */ | |
1059 | if (cdb[1] == MO_SET_TARGET_PGS && | |
1060 | su_dev->t10_alua.alua_type == SPC3_ALUA_EMULATED) { | |
1061 | cmd->execute_cmd = | |
1062 | target_emulate_set_target_port_groups; | |
1063 | } | |
1064 | *size = get_unaligned_be32(&cdb[6]); | |
1065 | } else { | |
1066 | /* | |
1067 | * GPCMD_SEND_KEY from multi media commands | |
1068 | */ | |
1069 | *size = get_unaligned_be16(&cdb[8]); | |
1070 | } | |
1071 | break; | |
88455ec4 CH |
1072 | default: |
1073 | pr_warn("TARGET_CORE[%s]: Unsupported SCSI Opcode" | |
1074 | " 0x%02x, sending CHECK_CONDITION.\n", | |
1075 | cmd->se_tfo->get_fabric_name(), cdb[0]); | |
1076 | cmd->se_cmd_flags |= SCF_SCSI_CDB_EXCEPTION; | |
1077 | cmd->scsi_sense_reason = TCM_UNSUPPORTED_SCSI_OPCODE; | |
1078 | return -EINVAL; | |
1079 | } | |
1080 | ||
1081 | return 0; | |
1082 | } | |
1083 | EXPORT_SYMBOL(spc_parse_cdb); |