1 /*
2 * Copyright (c) 1998,1999,2000
3 * Traakan, Inc., Los Altos, CA
4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 * 1. Redistributions of source code must retain the above copyright
10 * notice unmodified, this list of conditions, and the following
11 * disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
26 * SUCH DAMAGE.
27 */
28
29 /*
30 * Project: NDMJOB
31 * Ident: $Id: $
32 *
33 * Description:
34 *
35 */
36
37
38 #include "ndmlib.h"
39
40
41 /*
42 * NAME[,[CNUM,]SID[,LUN]
43 *
44 * The foregoing pattern is ambiguous. Here's the disambiguating rules:
45 * 1) If just a name is given, controller, sid, and lun are all
46 * set to invalid (-1)
47 * 2) If one number comes after the device name (,sid) it is the
48 * SID; controller is set to -1, lun is set to 0
49 * 3) If two numbers come after the device name (,sid,lun), they are
50 * the SID and LUN; controller is set to -1
51 * 4) Three numbers after the device name are all three number fields.
52 */
53
54
ndmscsi_target_from_str(struct ndmscsi_target * targ,char * str)55 int ndmscsi_target_from_str(struct ndmscsi_target* targ, char* str)
56 {
57 char* p;
58 int n1, n2, n3;
59
60 NDMOS_MACRO_ZEROFILL(targ);
61
62 p = strchr(str, ',');
63 if (p) { *p++ = 0; }
64
65 if (strlen(str) >= NDMOS_CONST_PATH_MAX) {
66 if (p) p[-1] = ',';
67 return -2;
68 }
69
70 strcpy(targ->dev_name, str);
71
72 if (!p) {
73 targ->controller = -1;
74 targ->sid = -1;
75 targ->lun = -1;
76
77 return 0;
78 }
79
80 p[-1] = ',';
81
82 if (*p < '0' || '9' < *p) { return -3; }
83 n1 = strtol(p, &p, 0);
84 if (*p != 0 && *p != ',') { return -4; }
85 if (*p == 0) {
86 targ->controller = -1;
87 targ->sid = n1;
88 targ->lun = 0;
89
90 return 0;
91 }
92
93 p++;
94
95 if (*p < '0' || '9' < *p) { return -5; }
96 n2 = strtol(p, &p, 0);
97
98 if (*p == 0) {
99 /* SID,LUN */
100 targ->controller = -1;
101 targ->sid = n1;
102 targ->lun = n2;
103 } else {
104 if (*p != ',') { return -6; }
105 p++;
106
107 if (*p < '0' || '9' < *p) { return -7; }
108 n3 = strtol(p, &p, 0);
109
110 if (*p != 0) { return -8; }
111
112 targ->controller = n1;
113 targ->sid = n2;
114 targ->lun = n3;
115 }
116
117 return 0;
118 }
119
120
ndmscsi_open(struct ndmconn * conn,char * dev_name)121 int ndmscsi_open(struct ndmconn* conn, char* dev_name)
122 {
123 int rc;
124
125 NDMC_WITH(ndmp9_scsi_open, NDMP9VER)
126 request->device = dev_name;
127 rc = NDMC_CALL(conn);
128 NDMC_ENDWITH
129
130 return rc;
131 }
132
ndmscsi_close(struct ndmconn * conn)133 int ndmscsi_close(struct ndmconn* conn)
134 {
135 int rc;
136
137 NDMC_WITH_VOID_REQUEST(ndmp9_scsi_close, NDMP9VER)
138 rc = NDMC_CALL(conn);
139 NDMC_ENDWITH
140
141 return rc;
142 }
143
ndmscsi_get_state(struct ndmconn * conn,struct ndmscsi_target * targ)144 int ndmscsi_get_state(struct ndmconn* conn, struct ndmscsi_target* targ)
145 {
146 int rc;
147
148 NDMOS_MACRO_ZEROFILL(targ);
149
150 NDMC_WITH_VOID_REQUEST(ndmp9_scsi_get_state, NDMP9VER)
151 rc = NDMC_CALL(conn);
152 targ->controller = reply->target_controller;
153 targ->sid = reply->target_id;
154 targ->lun = reply->target_lun;
155 NDMC_ENDWITH
156
157 return rc;
158 }
159
ndmscsi_set_target(struct ndmconn * conn,struct ndmscsi_target * targ)160 int ndmscsi_set_target(struct ndmconn* conn, struct ndmscsi_target* targ)
161 {
162 int rc;
163
164 NDMC_WITH(ndmp9_scsi_set_target, NDMP9VER)
165 request->device = targ->dev_name;
166 request->target_controller = targ->controller;
167 request->target_id = targ->sid;
168 request->target_lun = targ->lun;
169 rc = NDMC_CALL(conn);
170 NDMC_ENDWITH
171
172 return rc;
173 }
174
ndmscsi_use(struct ndmconn * conn,struct ndmscsi_target * targ)175 int ndmscsi_use(struct ndmconn* conn, struct ndmscsi_target* targ)
176 {
177 int rc;
178
179 rc = ndmscsi_open(conn, targ->dev_name);
180 if (rc) return rc;
181
182 if (targ->controller != -1 || targ->sid != -1 || targ->lun != -1) {
183 #ifndef NDMOS_OPTION_NO_NDMP4
184 if (conn->protocol_version == NDMP4VER) {
185 return -1; /* can't set target */
186 }
187 #endif /* !NDMOS_OPTION_NO_NDMP4 */
188
189 rc = ndmscsi_set_target(conn, targ);
190 if (rc) {
191 ndmscsi_close(conn); /* best effort */
192 return rc;
193 }
194 }
195
196 return 0;
197 }
198
ndmscsi_execute(struct ndmconn * conn,struct ndmscsi_request * req,struct ndmscsi_target * targ)199 int ndmscsi_execute(struct ndmconn* conn,
200 struct ndmscsi_request* req,
201 struct ndmscsi_target* targ)
202 {
203 int rc;
204
205 if (targ) {
206 rc = ndmscsi_use(conn, targ);
207 if (rc) return rc;
208 }
209
210 NDMC_WITH(ndmp9_scsi_execute_cdb, NDMP9VER)
211 request->cdb.cdb_len = req->n_cmd;
212 request->cdb.cdb_val = (char*)req->cmd;
213
214 switch (req->data_dir) {
215 case NDMSCSI_DD_NONE:
216 request->data_dir = NDMP9_SCSI_DATA_DIR_NONE;
217 break;
218
219 case NDMSCSI_DD_IN:
220 request->data_dir = NDMP9_SCSI_DATA_DIR_IN;
221 request->datain_len = req->n_data_avail;
222 break;
223
224 case NDMSCSI_DD_OUT:
225 request->data_dir = NDMP9_SCSI_DATA_DIR_OUT;
226 request->dataout.dataout_len = req->n_data_avail;
227 request->dataout.dataout_val = (char*)req->data;
228 break;
229 }
230 request->timeout = 300000; /* five minutes */
231
232 rc = NDMC_CALL(conn);
233 if (rc) {
234 req->completion_status = NDMSCSI_CS_FAIL;
235 return rc;
236 }
237
238 req->status_byte = reply->status;
239 req->n_data_done = 0;
240 req->n_sense_data = 0;
241
242 rc = reply->ext_sense.ext_sense_len;
243 if (rc > 0) {
244 if (rc > NDMSCSI_MAX_SENSE_DATA) rc = NDMSCSI_MAX_SENSE_DATA;
245
246 req->n_sense_data = rc;
247 NDMOS_API_BCOPY(reply->ext_sense.ext_sense_val, req->sense_data, rc);
248 }
249
250 switch (req->data_dir) {
251 case NDMSCSI_DD_IN:
252 req->n_data_done = reply->datain.datain_len;
253 if (req->n_data_done > 0) {
254 NDMOS_API_BCOPY(reply->datain.datain_val, req->data, req->n_data_done);
255 }
256 break;
257
258 case NDMSCSI_DD_OUT:
259 req->n_data_done = reply->dataout_len;
260 break;
261 }
262 req->completion_status = NDMSCSI_CS_GOOD;
263
264 NDMC_FREE_REPLY();
265 NDMC_ENDWITH
266
267 return 0;
268 }
269