File: /usr/src/linux/drivers/scsi/aic7xxx/cam.h
1 /*
2 * Data structures and definitions for the CAM system.
3 *
4 * Copyright (c) 1997 Justin T. Gibbs.
5 * Copyright (c) 2000 Adaptec Inc.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions, and the following disclaimer,
13 * without modification.
14 * 2. The name of the author may not be used to endorse or promote products
15 * derived from this software without specific prior written permission.
16 *
17 * Alternatively, this software may be distributed under the terms of the
18 * GNU Public License ("GPL").
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR
24 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * $Id: //depot/src/linux/drivers/scsi/aic7xxx/cam.h#10 $
33 */
34
35 #ifndef _AIC7XXX_CAM_H
36 #define _AIC7XXX_CAM_H 1
37
38 /* Provide a mapping from CAM constructs to Linux SCSI constructs */
39
40 #define CAM_BUS_WILDCARD ((u_int)~0)
41 #define CAM_TARGET_WILDCARD ((u_int)~0)
42 #define CAM_LUN_WILDCARD ((u_int)~0)
43
44 /* CAM Status field values */
45 typedef enum {
46 /* CCB request is in progress */
47 CAM_REQ_INPROG = 0x3F, /* Some value unused by Linux */
48 /* CCB request completed without error */
49 CAM_REQ_CMP = DID_OK,
50 /* CCB request aborted by the host */
51 CAM_REQ_ABORTED = DID_ABORT,
52 /* Unable to abort CCB request */
53 CAM_UA_ABORT = DID_ERROR,
54 /* CCB request completed with an error */
55 CAM_REQ_CMP_ERR = DID_ERROR,
56 /* CAM subsytem is busy */
57 CAM_BUSY = DID_BUS_BUSY,
58 /* CCB request was invalid */
59 CAM_REQ_INVALID = DID_BAD_TARGET,
60 /* Supplied Path ID is invalid */
61 CAM_PATH_INVALID = DID_BAD_TARGET,
62 /* Target Selection Timeout */
63 CAM_SEL_TIMEOUT = DID_NO_CONNECT,
64 /* Command timeout */
65 CAM_CMD_TIMEOUT = DID_ERROR, /*
66 * Should never occur in Linux
67 * as the upper level code
68 * handles all timeout processing.
69 */
70 /* SCSI error, look at error code in CCB */
71 CAM_SCSI_STATUS_ERROR = DID_OK, /* Linux looks at status byte */
72 /* SCSI Bus Reset Sent/Received */
73 CAM_SCSI_BUS_RESET = DID_RESET,
74 /* Uncorrectable parity error occurred */
75 CAM_UNCOR_PARITY = DID_PARITY,
76 /* Autosense: request sense cmd fail */
77 CAM_AUTOSENSE_FAIL = DID_ERROR,
78 /* No HBA Detected Error */
79 CAM_NO_HBA = DID_ERROR,
80 /* Data Overrun error */
81 CAM_DATA_RUN_ERR = DID_ERROR,
82 /* Unexpected Bus Free */
83 CAM_UNEXP_BUSFREE = DID_ERROR,
84 /* CCB length supplied is inadequate */
85 CAM_CCB_LEN_ERR = DID_ERROR,
86 /* Unable to provide requested capability */
87 CAM_PROVIDE_FAIL = DID_ERROR,
88 /* A SCSI BDR msg was sent to target */
89 CAM_BDR_SENT = DID_RESET,
90 /* CCB request terminated by the host */
91 CAM_REQ_TERMIO = DID_ERROR,
92 /* Unrecoverable Host Bus Adapter Error */
93 CAM_UNREC_HBA_ERROR = DID_ERROR,
94 /* The request was too large for this host */
95 CAM_REQ_TOO_BIG = DID_ERROR,
96 /*
97 * This request should be requeued to preserve
98 * transaction ordering. This typically occurs
99 * when the SIM recognizes an error that should
100 * freeze the queue and must place additional
101 * requests for the target at the sim level
102 * back into the XPT queue.
103 */
104 CAM_REQUEUE_REQ = DID_BUS_BUSY,
105
106 CAM_STATUS_MASK = 0x3F
107 } cam_status;
108
109 #if LINUX_VERSION_CODE < KERNEL_VERSION(2,3,0)
110 #define SCSI_DATA_READ 1
111 #define SCSI_DATA_WRITE 2
112 #define SCSI_DATA_NONE 3
113 #endif
114
115 /*
116 * Definitions for the asynchronous callback CCB fields.
117 */
118 typedef enum {
119 AC_GETDEV_CHANGED = 0x800,/* Getdev info might have changed */
120 AC_INQ_CHANGED = 0x400,/* Inquiry info might have changed */
121 AC_TRANSFER_NEG = 0x200,/* New transfer settings in effect */
122 AC_LOST_DEVICE = 0x100,/* A device went away */
123 AC_FOUND_DEVICE = 0x080,/* A new device was found */
124 AC_PATH_DEREGISTERED = 0x040,/* A path has de-registered */
125 AC_PATH_REGISTERED = 0x020,/* A new path has been registered */
126 AC_SENT_BDR = 0x010,/* A BDR message was sent to target */
127 AC_SCSI_AEN = 0x008,/* A SCSI AEN has been received */
128 AC_UNSOL_RESEL = 0x002,/* Unsolicited reselection occurred */
129 AC_BUS_RESET = 0x001 /* A SCSI bus reset occurred */
130 } ac_code;
131
132 typedef enum {
133 CAM_DIR_IN = SCSI_DATA_READ,
134 CAM_DIR_OUT = SCSI_DATA_WRITE,
135 CAM_DIR_NONE = SCSI_DATA_NONE
136 } ccb_flags;
137
138 #endif /* _AIC7XXX_CAM_H */
139