2 * Data structures and definitions for the CAM system.
4 * Copyright (c) 1997 Justin T. Gibbs.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions, and the following disclaimer,
12 * without modification, immediately at the beginning of the file.
13 * 2. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
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 FOR
20 * 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
38 #include <sys/cdefs.h>
40 typedef u_int path_id_t;
41 typedef u_int target_id_t;
42 typedef u_int lun_id_t;
44 #define CAM_XPT_PATH_ID ((path_id_t)~0)
45 #define CAM_BUS_WILDCARD ((path_id_t)~0)
46 #define CAM_TARGET_WILDCARD ((target_id_t)~0)
47 #define CAM_LUN_WILDCARD ((lun_id_t)~0)
50 * Maximum length for a CAM CDB.
52 #define CAM_MAX_CDBLEN 16
55 * Definition of a CAM peripheral driver entry. Peripheral drivers instantiate
56 * one of these for each device they wish to communicate with and pass it into
57 * the xpt layer when they wish to schedule work on that device via the
63 * Priority information for a CAM structure.
74 * The generation number is incremented everytime a new entry is entered into
75 * the queue giving round robin per priority level scheduling.
79 #define CAM_PRIORITY_HOST ((CAM_RL_HOST << 8) + 0x80)
80 #define CAM_PRIORITY_BUS ((CAM_RL_BUS << 8) + 0x80)
81 #define CAM_PRIORITY_XPT ((CAM_RL_XPT << 8) + 0x80)
82 #define CAM_PRIORITY_DEV ((CAM_RL_DEV << 8) + 0x80)
83 #define CAM_PRIORITY_NORMAL ((CAM_RL_NORMAL << 8) + 0x80)
84 #define CAM_PRIORITY_NONE (u_int32_t)-1
85 #define CAM_PRIORITY_TO_RL(x) ((x) >> 8)
86 #define CAM_RL_TO_PRIORITY(x) ((x) << 8)
89 #define CAM_UNQUEUED_INDEX -1
90 #define CAM_ACTIVE_INDEX -2
91 #define CAM_DONEQ_INDEX -3
95 * Macro to compare two generation numbers. It is used like this:
97 * if (GENERATIONCMP(a, >=, b))
100 * GERERATIONCMP uses modular arithmetic to guard against wraps
101 * wraps in the generation number.
103 #define GENERATIONCMP(x, op, y) ((int32_t)((x) - (y)) op 0)
105 /* CAM flags XXX Move to cam_periph.h ??? */
107 CAM_FLAG_NONE = 0x00,
108 CAM_EXPECT_INQ_CHANGE = 0x01,
109 CAM_RETRY_SELTO = 0x02 /* Retry Selection Timeouts */
112 /* CAM Status field values */
114 CAM_REQ_INPROG, /* CCB request is in progress */
115 CAM_REQ_CMP, /* CCB request completed without error */
116 CAM_REQ_ABORTED, /* CCB request aborted by the host */
117 CAM_UA_ABORT, /* Unable to abort CCB request */
118 CAM_REQ_CMP_ERR, /* CCB request completed with an error */
119 CAM_BUSY, /* CAM subsystem is busy */
120 CAM_REQ_INVALID, /* CCB request was invalid */
121 CAM_PATH_INVALID, /* Supplied Path ID is invalid */
122 CAM_DEV_NOT_THERE, /* SCSI Device Not Installed/there */
123 CAM_UA_TERMIO, /* Unable to terminate I/O CCB request */
124 CAM_SEL_TIMEOUT, /* Target Selection Timeout */
125 CAM_CMD_TIMEOUT, /* Command timeout */
126 CAM_SCSI_STATUS_ERROR, /* SCSI error, look at error code in CCB */
127 CAM_MSG_REJECT_REC, /* Message Reject Received */
128 CAM_SCSI_BUS_RESET, /* SCSI Bus Reset Sent/Received */
129 CAM_UNCOR_PARITY, /* Uncorrectable parity error occurred */
130 CAM_AUTOSENSE_FAIL = 0x10,/* Autosense: request sense cmd fail */
131 CAM_NO_HBA, /* No HBA Detected error */
132 CAM_DATA_RUN_ERR, /* Data Overrun error */
133 CAM_UNEXP_BUSFREE, /* Unexpected Bus Free */
134 CAM_SEQUENCE_FAIL, /* Target Bus Phase Sequence Failure */
135 CAM_CCB_LEN_ERR, /* CCB length supplied is inadequate */
136 CAM_PROVIDE_FAIL, /* Unable to provide requested capability */
137 CAM_BDR_SENT, /* A SCSI BDR msg was sent to target */
138 CAM_REQ_TERMIO, /* CCB request terminated by the host */
139 CAM_UNREC_HBA_ERROR, /* Unrecoverable Host Bus Adapter Error */
140 CAM_REQ_TOO_BIG, /* The request was too large for this host */
142 * This request should be requeued to preserve
143 * transaction ordering. This typically occurs
144 * when the SIM recognizes an error that should
145 * freeze the queue and must place additional
146 * requests for the target at the sim level
147 * back into the XPT queue.
149 CAM_ATA_STATUS_ERROR, /* ATA error, look at error code in CCB */
150 CAM_SCSI_IT_NEXUS_LOST, /* Initiator/Target Nexus lost. */
151 CAM_IDE = 0x33, /* Initiator Detected Error */
152 CAM_RESRC_UNAVAIL, /* Resource Unavailable */
153 CAM_UNACKED_EVENT, /* Unacknowledged Event by Host */
154 CAM_MESSAGE_RECV, /* Message Received in Host Target Mode */
155 CAM_INVALID_CDB, /* Invalid CDB received in Host Target Mode */
156 CAM_LUN_INVALID, /* Lun supplied is invalid */
157 CAM_TID_INVALID, /* Target ID supplied is invalid */
158 CAM_FUNC_NOTAVAIL, /* The requested function is not available */
159 CAM_NO_NEXUS, /* Nexus is not established */
160 CAM_IID_INVALID, /* The initiator ID is invalid */
161 CAM_CDB_RECVD, /* The SCSI CDB has been received */
162 CAM_LUN_ALRDY_ENA, /* The LUN is already enabled for target mode */
163 CAM_SCSI_BUSY, /* SCSI Bus Busy */
165 CAM_DEV_QFRZN = 0x40, /* The DEV queue is frozen w/this err */
167 /* Autosense data valid for target */
168 CAM_AUTOSNS_VALID = 0x80,
169 CAM_RELEASE_SIMQ = 0x100,/* SIM ready to take more commands */
170 CAM_SIM_QUEUED = 0x200,/* SIM has this command in it's queue */
172 CAM_STATUS_MASK = 0x3F, /* Mask bits for just the status # */
174 /* Target Specific Adjunct Status */
175 CAM_SENT_SENSE = 0x40000000 /* sent sense with status */
180 CAM_ESF_COMMAND = 0x01,
181 CAM_ESF_CAM_STATUS = 0x02,
182 CAM_ESF_PROTO_STATUS = 0x04,
184 } cam_error_string_flags;
188 CAM_EPF_MINIMAL = 0x01,
189 CAM_EPF_NORMAL = 0x02,
191 CAM_EPF_LEVEL_MASK = 0x0f
192 /* All bits above bit 3 are protocol-specific */
193 } cam_error_proto_flags;
196 CAM_ESF_PRINT_NONE = 0x00,
197 CAM_ESF_PRINT_STATUS = 0x10,
198 CAM_ESF_PRINT_SENSE = 0x20
199 } cam_error_scsi_flags;
202 CAM_EAF_PRINT_NONE = 0x00,
203 CAM_EAF_PRINT_STATUS = 0x10,
204 CAM_EAF_PRINT_RESULT = 0x20
205 } cam_error_ata_flags;
207 struct cam_status_entry
209 cam_status status_code;
210 const char *status_text;
213 extern const struct cam_status_entry cam_status_table[];
214 extern const int num_cam_status_entries;
216 extern int cam_sort_io_queues;
220 #ifdef SYSCTL_DECL /* from sysctl.h */
221 SYSCTL_DECL(_kern_cam);
225 typedef int (cam_quirkmatch_t)(caddr_t, caddr_t);
227 caddr_t cam_quirkmatch(caddr_t target, caddr_t quirk_table, int num_entries,
228 int entry_size, cam_quirkmatch_t *comp_func);
230 void cam_strvis(u_int8_t *dst, const u_int8_t *src, int srclen, int dstlen);
232 int cam_strmatch(const u_int8_t *str, const u_int8_t *pattern, int str_len);
233 const struct cam_status_entry*
234 cam_fetch_status_entry(cam_status status);
236 char * cam_error_string(union ccb *ccb, char *str, int str_len,
237 cam_error_string_flags flags,
238 cam_error_proto_flags proto_flags);
239 void cam_error_print(union ccb *ccb, cam_error_string_flags flags,
240 cam_error_proto_flags proto_flags);
244 char * cam_error_string(struct cam_device *device, union ccb *ccb, char *str,
245 int str_len, cam_error_string_flags flags,
246 cam_error_proto_flags proto_flags);
247 void cam_error_print(struct cam_device *device, union ccb *ccb,
248 cam_error_string_flags flags,
249 cam_error_proto_flags proto_flags, FILE *ofile);
254 static __inline void cam_init_pinfo(cam_pinfo *pinfo);
256 static __inline void cam_init_pinfo(cam_pinfo *pinfo)
258 pinfo->priority = CAM_PRIORITY_NONE;
259 pinfo->index = CAM_UNQUEUED_INDEX;
263 #endif /* _CAM_CAM_H */