1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 1999 Michael Smith 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following 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 #include <fcntl.h> 30 #include <stdio.h> 31 #include <stdlib.h> 32 #include <unistd.h> 33 #include <string.h> 34 #include <cam/scsi/scsi_all.h> 35 36 #include <dev/mlx/mlxio.h> 37 #include <dev/mlx/mlxreg.h> 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; 82 int i, fd, ctrlfd; 83 84 /* Get the device */ 85 if ((ctrlfd = open(ctrlrpath(unit), 0)) < 0) 86 return; 87 88 for (i = -1; ;) { 89 /* Get the unit number of the next child device */ 90 if (ioctl(ctrlfd, MLX_NEXT_CHILD, &i) < 0) { 91 close(ctrlfd); 92 return; 93 } 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 127 mlxd_find_ctrlr_search(int unit, void *arg) 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 */ 197 mlx_perform(unit, mlx_command, (void *)&cmd); 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 */ 219 mlx_perform(unit, mlx_command, (void *)&cmd); 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 scsi_ulto2b(SHORT_INQUIRY_LENGTH, inq_cmd->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 */ 286 mlx_perform(unit, mlx_command, (void *)&cmd); 287 288 return(cmd.mu_status != 0); 289 } 290