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1.1 root 1: /*
2: * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * The contents of this file constitute Original Code as defined in and
7: * are subject to the Apple Public Source License Version 1.1 (the
8: * "License"). You may not use this file except in compliance with the
9: * License. Please obtain a copy of the License at
10: * http://www.apple.com/publicsource and read it before using this file.
11: *
12: * This Original Code and all software distributed under the License are
13: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
14: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
15: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
16: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
17: * License for the specific language governing rights and limitations
18: * under the License.
19: *
20: * @APPLE_LICENSE_HEADER_END@
21: */
22:
23: /* Sym8xxInterface.h created by russb2 on Sat 30-May-1998 */
24:
25: /*
26: * This file contains shared data structures between the script and the driver
27: *
28: */
29:
30: #define MAX_SCSI_TARGETS 16
31: #define MAX_SCSI_LUNS 8
32: #define MAX_SCSI_TAG 256
33: #define MIN_SCSI_TAG 128
34:
35: #define kHostAdapterSCSIId 7
36:
37: #define MAX_SCHED_MAILBOXES 256
38: #define kMailBoxEmpty 0
39: #define kMailBoxCancel 1
40:
41: #define kSCSITimerIntervalMS 250
42: #define kReqSenseTimeoutMS 3000
43: #define kAbortTimeoutMS 3000
44: #define kResetQuiesceDelayMS 3000
45: #define kAbortScriptTimeoutMS 50
46:
47: /*
48: * NEXUS DATA Structure
49: *
50: * The Nexus structure contains per-request information for the script/driver
51: * to execute a SCSI request.
52: */
53:
54: typedef struct SGEntry
55: {
56: UInt32 length;
57: UInt32 physAddr;
58: } SGEntry;
59:
60: /*
61: * Note: There are (3) SG List entries reserved for use by the driver,
62: * i.e SG Entries 0-1 and the last entry in the list.
63: */
64: #define MAX_SGLIST_ENTRIES (64+3)
65:
66: /*
67: * This part of the Nexus structure contains the script engine clock registers to
68: * be used for this request. This information is also contained in the per-target
69: * table (AdapterInterface->targetClocks).
70: */
71: typedef struct NexusParms
72: {
73: UInt8 reserved_1;
74: UInt8 sxferReg;
75: UInt8 target;
76: UInt8 scntl3Reg;
77: } NexusParms;
78:
79: /*
80: * Pointers in the Nexus to our CDB/MsgOut data are in this format.
81: */
82: typedef struct NexusData
83: {
84: UInt32 length;
85: UInt32 ppData;
86: } NexusData;
87:
88: typedef struct Nexus Nexus;
89: struct Nexus
90: {
91: NexusParms targetParms;
92:
93: SGEntry *ppSGList;
94:
95: NexusData msg;
96: NexusData cdb;
97:
98: UInt32 currentDataPtr;
99: UInt32 savedDataPtr;
100:
101: UInt8 tag;
102: UInt8 dataXferCalled;
103: UInt8 wideResidCount;
104: UInt8 reserved_1[1];
105:
106: /*
107: * Data buffers for nexus
108: */
109: UInt8 cdbData[16];
110: UInt8 msgData[16];
111: UInt32 sgNextIndex;
112: SGEntry sgListData[MAX_SGLIST_ENTRIES];
113:
114: };
115:
116: /*
117: * Abort Bdr Mailbox
118: *
119: * The mailbox is used to send an Abort or Bus Device Reset to a device
120: * This mailbox is 4 bytes long, and all the necessary information are
121: * contained in this mailbox (No nexus Data associated)
122: */
123: typedef struct IOAbortBdrMailBox
124: {
125: UInt8 identify; /* Identify msg (0xC0) if Abort A0 */
126: UInt8 tag; /* Tag Message or Zero A1 */
127: UInt8 scsi_id; /* SCSI id of the target of the request A2 */
128: UInt8 message; /* Abort(0x06) or Bdr(0x0C) or AbortTag (0x0D) A3 */
129: } IOAbortBdrMailBox;
130:
131: /*
132: * IODone mailbox
133: *
134: * This mailbox is used to signal the completion of an I/O to the driver.
135: */
136:
137: typedef struct IODoneMailBox
138: {
139: UInt8 nexus; /* Nexus of the completed I/O */
140: UInt8 status; /* Status of the completed I/O */
141: UInt8 zero;
142: UInt8 semaphore; /* If set, these contents are valid */
143: } IODoneMailBox;
144:
145: /*
146: * Adapter Interface
147: *
148: * This structure contains the shared data between the script and
149: * the driver. The script's local variable table is updated to point to the
150: * physical addresses of the data in this control block.
151: */
152:
153: typedef struct TargetClocks
154: {
155: UInt8 reserved_1;
156: UInt8 sxferReg;
157: UInt8 reserved_2;
158: UInt8 scntl3Reg;
159: } TargetClocks;
160:
161: typedef struct AdapterInterface
162: {
163: Nexus **nexusPtrsVirt;
164: Nexus **nexusPtrsPhys;
165:
166: Nexus *nexusArrayPhys[MAX_SCSI_TAG]; /* Active SRBs or -1 */
167: Nexus *schedMailBox[MAX_SCHED_MAILBOXES]; /* New SRBs */
168: TargetClocks targetClocks[MAX_SCSI_TARGETS];
169:
170: UInt32 xferSWideInst[4];
171:
172: } AdapterInterface;
173:
174: #define SCRIPT_VAR(x) ( *(UInt32 *)(chipRamAddr+(x)) )
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