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984263bc MD |
1 | /*- |
2 | * Copyright (c) 1999 Michael Smith | |
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 | * 2. Redistributions in binary form must reproduce the above copyright | |
11 | * notice, this list of conditions and the following disclaimer in the | |
12 | * documentation and/or other materials provided with the distribution. | |
13 | * | |
14 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND | |
15 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
16 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
17 | * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE | |
18 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
19 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
20 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
21 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
22 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
23 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
24 | * SUCH DAMAGE. | |
25 | * | |
c6aff4f7 | 26 | * $FreeBSD: src/usr.sbin/mlxcontrol/interface.c,v 1.3 2008/09/12 17:40:17 sepotvin Exp $ |
984263bc MD |
27 | */ |
28 | ||
29 | #include <fcntl.h> | |
30 | #include <stdio.h> | |
31 | #include <stdlib.h> | |
32 | #include <unistd.h> | |
33 | #include <string.h> | |
4842621b | 34 | #include <bus/cam/scsi/scsi_all.h> |
984263bc | 35 | |
38a690d7 MD |
36 | #include <dev/raid/mlx/mlxio.h> |
37 | #include <dev/raid/mlx/mlxreg.h> | |
984263bc MD |
38 | |
39 | #include "mlxcontrol.h" | |
40 | ||
41 | /******************************************************************************** | |
42 | * Iterate over all mlx devices, call (func) with each ones' path and (arg) | |
43 | */ | |
44 | void | |
45 | mlx_foreach(void (*func)(int unit, void *arg), void *arg) | |
46 | { | |
47 | int i, fd; | |
48 | ||
49 | /* limit total count for sanity */ | |
50 | for (i = 0; i < 64; i++) { | |
51 | /* verify we can open it */ | |
52 | if ((fd = open(ctrlrpath(i), 0)) >= 0) | |
53 | close(fd); | |
54 | /* if we can, do */ | |
55 | if (fd >= 0) { | |
56 | func(i, arg); | |
57 | } | |
58 | } | |
59 | } | |
60 | ||
61 | /******************************************************************************** | |
62 | * Open the controller (unit) and give the fd to (func) along with (arg) | |
63 | */ | |
64 | void | |
65 | mlx_perform(int unit, void (*func)(int fd, void *arg), void *arg) | |
66 | { | |
67 | int fd; | |
68 | ||
69 | if ((fd = open(ctrlrpath(unit), 0)) >= 0) { | |
70 | func(fd, arg); | |
71 | close(fd); | |
72 | } | |
73 | } | |
74 | ||
75 | /******************************************************************************** | |
76 | * Iterate over all mlxd devices, call (func) with each ones' path and (arg) | |
77 | */ | |
78 | void | |
79 | mlxd_foreach_ctrlr(int unit, void *arg) | |
80 | { | |
81 | struct mlxd_foreach_action *ma = (struct mlxd_foreach_action *)arg; | |
c6aff4f7 | 82 | int i, fd, ctrlfd; |
984263bc MD |
83 | |
84 | /* Get the device */ | |
c6aff4f7 | 85 | if ((ctrlfd = open(ctrlrpath(unit), 0)) < 0) |
984263bc MD |
86 | return; |
87 | ||
88 | for (i = -1; ;) { | |
89 | /* Get the unit number of the next child device */ | |
c6aff4f7 SW |
90 | if (ioctl(ctrlfd, MLX_NEXT_CHILD, &i) < 0) { |
91 | close(ctrlfd); | |
984263bc | 92 | return; |
c6aff4f7 | 93 | } |
984263bc MD |
94 | |
95 | /* check that we can open this unit */ | |
96 | if ((fd = open(drivepath(i), 0)) >= 0) | |
97 | close(fd); | |
98 | /* if we can, do */ | |
99 | if (fd >= 0) { | |
100 | ma->func(i, ma->arg); | |
101 | } | |
102 | } | |
103 | } | |
104 | ||
105 | void | |
106 | mlxd_foreach(void (*func)(int unit, void *arg), void *arg) | |
107 | { | |
108 | struct mlxd_foreach_action ma; | |
109 | ||
110 | ma.func = func; | |
111 | ma.arg = arg; | |
112 | mlx_foreach(mlxd_foreach_ctrlr, &ma); | |
113 | } | |
114 | ||
115 | /******************************************************************************** | |
116 | * Find the controller that manages the drive (unit), return controller number | |
117 | * and system drive number on that controller. | |
118 | */ | |
119 | static struct | |
120 | { | |
121 | int unit; | |
122 | int ctrlr; | |
123 | int sysdrive; | |
124 | } mlxd_find_ctrlr_param; | |
125 | ||
126 | static void | |
c6aff4f7 | 127 | mlxd_find_ctrlr_search(int unit, void *arg __unused) |
984263bc MD |
128 | { |
129 | int i, fd; | |
130 | ||
131 | /* Get the device */ | |
132 | if ((fd = open(ctrlrpath(unit), 0)) >= 0) { | |
133 | for (i = -1; ;) { | |
134 | /* Get the unit number of the next child device */ | |
135 | if (ioctl(fd, MLX_NEXT_CHILD, &i) < 0) | |
136 | break; | |
137 | ||
138 | /* is this child the unit we want? */ | |
139 | if (i == mlxd_find_ctrlr_param.unit) { | |
140 | mlxd_find_ctrlr_param.ctrlr = unit; | |
141 | if (ioctl(fd, MLX_GET_SYSDRIVE, &i) == 0) | |
142 | mlxd_find_ctrlr_param.sysdrive = i; | |
143 | } | |
144 | } | |
145 | close(fd); | |
146 | } | |
147 | } | |
148 | ||
149 | int | |
150 | mlxd_find_ctrlr(int unit, int *ctrlr, int *sysdrive) | |
151 | { | |
152 | mlxd_find_ctrlr_param.unit = unit; | |
153 | mlxd_find_ctrlr_param.ctrlr = -1; | |
154 | mlxd_find_ctrlr_param.sysdrive = -1; | |
155 | ||
156 | mlx_foreach(mlxd_find_ctrlr_search, NULL); | |
157 | if ((mlxd_find_ctrlr_param.ctrlr != -1) && (mlxd_find_ctrlr_param.sysdrive != -1)) { | |
158 | *ctrlr = mlxd_find_ctrlr_param.ctrlr; | |
159 | *sysdrive = mlxd_find_ctrlr_param.sysdrive; | |
160 | return(0); | |
161 | } | |
162 | return(1); | |
163 | } | |
164 | ||
165 | ||
166 | /******************************************************************************** | |
167 | * Send a command to the controller on (fd) | |
168 | */ | |
169 | ||
170 | void | |
171 | mlx_command(int fd, void *arg) | |
172 | { | |
173 | struct mlx_usercommand *cmd = (struct mlx_usercommand *)arg; | |
174 | int error; | |
175 | ||
176 | error = ioctl(fd, MLX_COMMAND, cmd); | |
177 | if (error != 0) | |
178 | cmd->mu_error = error; | |
179 | } | |
180 | ||
181 | /******************************************************************************** | |
182 | * Perform an ENQUIRY2 command and return information related to the controller | |
183 | * (unit) | |
184 | */ | |
185 | int | |
186 | mlx_enquiry(int unit, struct mlx_enquiry2 *enq) | |
187 | { | |
188 | struct mlx_usercommand cmd; | |
189 | ||
190 | /* build the command */ | |
191 | cmd.mu_datasize = sizeof(*enq); | |
192 | cmd.mu_buf = enq; | |
193 | cmd.mu_bufptr = 8; | |
194 | cmd.mu_command[0] = MLX_CMD_ENQUIRY2; | |
195 | ||
196 | /* hand it off for processing */ | |
4e1af74f | 197 | mlx_perform(unit, mlx_command, &cmd); |
984263bc MD |
198 | |
199 | return(cmd.mu_status != 0); | |
200 | } | |
201 | ||
202 | ||
203 | /******************************************************************************** | |
204 | * Perform a READ CONFIGURATION command and return information related to the controller | |
205 | * (unit) | |
206 | */ | |
207 | int | |
208 | mlx_read_configuration(int unit, struct mlx_core_cfg *cfg) | |
209 | { | |
210 | struct mlx_usercommand cmd; | |
211 | ||
212 | /* build the command */ | |
213 | cmd.mu_datasize = sizeof(*cfg); | |
214 | cmd.mu_buf = cfg; | |
215 | cmd.mu_bufptr = 8; | |
216 | cmd.mu_command[0] = MLX_CMD_READ_CONFIG; | |
217 | ||
218 | /* hand it off for processing */ | |
4e1af74f | 219 | mlx_perform(unit, mlx_command, &cmd); |
984263bc MD |
220 | |
221 | return(cmd.mu_status != 0); | |
222 | } | |
223 | ||
224 | /******************************************************************************** | |
225 | * Perform a SCSI INQUIRY command and return pointers to the relevant data. | |
226 | */ | |
227 | int | |
228 | mlx_scsi_inquiry(int unit, int channel, int target, char **vendor, char **device, char **revision) | |
229 | { | |
230 | struct mlx_usercommand cmd; | |
231 | static struct { | |
232 | struct mlx_dcdb dcdb; | |
233 | union { | |
234 | struct scsi_inquiry_data inq; | |
235 | u_int8_t pad[SHORT_INQUIRY_LENGTH]; | |
236 | } d; | |
237 | } __attribute__ ((packed)) dcdb_cmd; | |
238 | struct scsi_inquiry *inq_cmd = (struct scsi_inquiry *)&dcdb_cmd.dcdb.dcdb_cdb[0]; | |
239 | ||
240 | /* build the command */ | |
241 | cmd.mu_datasize = sizeof(dcdb_cmd); | |
242 | cmd.mu_buf = &dcdb_cmd; | |
243 | cmd.mu_command[0] = MLX_CMD_DIRECT_CDB; | |
244 | ||
245 | /* build the DCDB */ | |
246 | bzero(&dcdb_cmd, sizeof(dcdb_cmd)); | |
247 | dcdb_cmd.dcdb.dcdb_channel = channel; | |
248 | dcdb_cmd.dcdb.dcdb_target = target; | |
249 | dcdb_cmd.dcdb.dcdb_flags = MLX_DCDB_DATA_IN | MLX_DCDB_TIMEOUT_10S; | |
250 | dcdb_cmd.dcdb.dcdb_datasize = SHORT_INQUIRY_LENGTH; | |
251 | dcdb_cmd.dcdb.dcdb_cdb_length = 6; | |
252 | dcdb_cmd.dcdb.dcdb_sense_length = SSD_FULL_SIZE; | |
253 | ||
254 | /* build the cdb */ | |
255 | inq_cmd->opcode = INQUIRY; | |
256 | inq_cmd->length = SHORT_INQUIRY_LENGTH; | |
257 | ||
258 | /* hand it off for processing */ | |
259 | mlx_perform(unit, mlx_command, &cmd); | |
260 | ||
261 | if (cmd.mu_status == 0) { | |
262 | *vendor = &dcdb_cmd.d.inq.vendor[0]; | |
263 | *device = &dcdb_cmd.d.inq.product[0]; | |
264 | *revision = &dcdb_cmd.d.inq.revision[0]; | |
265 | } | |
266 | return(cmd.mu_status); | |
267 | } | |
268 | ||
269 | /******************************************************************************** | |
270 | * Perform a GET DEVICE STATE command and return pointers to the relevant data. | |
271 | */ | |
272 | int | |
273 | mlx_get_device_state(int unit, int channel, int target, struct mlx_phys_drv *drv) | |
274 | { | |
275 | struct mlx_usercommand cmd; | |
276 | ||
277 | /* build the command */ | |
278 | cmd.mu_datasize = sizeof(*drv); | |
279 | cmd.mu_buf = drv; | |
280 | cmd.mu_bufptr = 8; | |
281 | cmd.mu_command[0] = MLX_CMD_DEVICE_STATE; | |
282 | cmd.mu_command[2] = channel; | |
283 | cmd.mu_command[3] = target; | |
284 | ||
285 | /* hand it off for processing */ | |
4e1af74f | 286 | mlx_perform(unit, mlx_command, &cmd); |
984263bc MD |
287 | |
288 | return(cmd.mu_status != 0); | |
289 | } |