Annotation of sys/arch/hp300/dev/mb89352var.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: mb89352var.h,v 1.5 2004/12/22 21:11:12 miod Exp $ */
2: /* $NetBSD: mb89352var.h,v 1.6 2003/08/02 12:48:09 tsutsui Exp $ */
3: /* NecBSD: mb89352var.h,v 1.4 1998/03/14 07:31:22 kmatsuda Exp */
4:
5: /*-
6: * Copyright (c) 1996,97,98,99 The NetBSD Foundation, Inc.
7: * All rights reserved.
8: *
9: * This code is derived from software contributed to The NetBSD Foundation
10: * by Charles M. Hannum, Masaru Oki and Kouichi Matsuda.
11: *
12: * Redistribution and use in source and binary forms, with or without
13: * modification, are permitted provided that the following conditions
14: * are met:
15: * 1. Redistributions of source code must retain the above copyright
16: * notice, this list of conditions and the following disclaimer.
17: * 2. Redistributions in binary form must reproduce the above copyright
18: * notice, this list of conditions and the following disclaimer in the
19: * documentation and/or other materials provided with the distribution.
20: * 3. All advertising materials mentioning features or use of this software
21: * must display the following acknowledgement:
22: * This product includes software developed by Charles M. Hannum.
23: * 4. The name of the author may not be used to endorse or promote products
24: * derived from this software without specific prior written permission.
25: *
26: * Copyright (c) 1994 Jarle Greipsland
27: * All rights reserved.
28: *
29: * Redistribution and use in source and binary forms, with or without
30: * modification, are permitted provided that the following conditions
31: * are met:
32: * 1. Redistributions of source code must retain the above copyright
33: * notice, this list of conditions and the following disclaimer.
34: * 2. Redistributions in binary form must reproduce the above copyright
35: * notice, this list of conditions and the following disclaimer in the
36: * documentation and/or other materials provided with the distribution.
37: * 3. The name of the author may not be used to endorse or promote products
38: * derived from this software without specific prior written permission.
39: *
40: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
41: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
42: * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
43: * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
44: * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
45: * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
46: * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48: * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
49: * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
50: * POSSIBILITY OF SUCH DAMAGE.
51: */
52: /*
53: * [NetBSD for NEC PC-98 series]
54: * Copyright (c) 1996, 1997, 1998
55: * NetBSD/pc98 porting staff. All rights reserved.
56: * Copyright (c) 1996, 1997, 1998
57: * Kouich Matsuda. All rights reserved.
58: */
59:
60: #ifndef _MB89352VAR_H_
61: #define _MB89352VAR_H_
62:
63: /*
64: * ACB. Holds additional information for each SCSI command Comments: We
65: * need a separate scsi command block because we may need to overwrite it
66: * with a request sense command. Basicly, we refrain from fiddling with
67: * the scsi_xfer struct (except do the expected updating of return values).
68: * We'll generally update: xs->{flags,resid,error,sense,status} and
69: * occasionally xs->retries.
70: */
71: struct spc_acb {
72: struct scsi_generic scsi_cmd;
73: int scsi_cmd_length;
74: u_char *data_addr; /* Saved data pointer */
75: int data_length; /* Residue */
76:
77: u_char target_stat; /* SCSI status byte */
78:
79: #ifdef notdef
80: struct spc_dma_seg dma[SPC_NSEG]; /* Physical addresses+len */
81: #endif
82:
83: TAILQ_ENTRY(spc_acb) chain;
84: struct scsi_xfer *xs; /* SCSI xfer ctrl block from above */
85: int flags;
86: #define ACB_ALLOC 0x01
87: #define ACB_NEXUS 0x02
88: #define ACB_SENSE 0x04
89: #define ACB_ABORT 0x40
90: #define ACB_RESET 0x80
91: int timeout;
92: };
93:
94: /*
95: * Some info about each (possible) target on the SCSI bus. This should
96: * probably have been a "per target+lunit" structure, but we'll leave it at
97: * this for now.
98: */
99: struct spc_tinfo {
100: int cmds; /* #commands processed */
101: int dconns; /* #disconnects */
102: int touts; /* #timeouts */
103: int perrs; /* #parity errors */
104: int senses; /* #request sense commands sent */
105: ushort lubusy; /* What local units/subr. are busy? */
106: u_char flags;
107: #define DO_SYNC 0x01 /* (Re)Negotiate synchronous options */
108: #define DO_WIDE 0x02 /* (Re)Negotiate wide options */
109: u_char period; /* Period suggestion */
110: u_char offset; /* Offset suggestion */
111: u_char width; /* Width suggestion */
112: };
113:
114: struct spc_softc {
115: struct device sc_dev;
116:
117: volatile u_int8_t *sc_regs;
118:
119: struct scsi_link sc_link; /* prototype for subdevs */
120:
121: TAILQ_HEAD(, spc_acb) free_list, ready_list, nexus_list;
122: struct spc_acb *sc_nexus; /* current command */
123: struct spc_acb sc_acb[8];
124: struct spc_tinfo sc_tinfo[8];
125:
126: /* Data about the current nexus (updated for every cmd switch) */
127: u_char *sc_dp; /* Current data pointer */
128: size_t sc_dleft; /* Data bytes left to transfer */
129: u_char *sc_cp; /* Current command pointer */
130: size_t sc_cleft; /* Command bytes left to transfer */
131:
132: /* Adapter state */
133: u_char sc_phase; /* Current bus phase */
134: u_char sc_prevphase; /* Previous bus phase */
135: u_char sc_state; /* State applicable to the adapter */
136: #define SPC_INIT 0
137: #define SPC_IDLE 1
138: #define SPC_SELECTING 2 /* SCSI command is arbiting */
139: #define SPC_RESELECTED 3 /* Has been reselected */
140: #define SPC_CONNECTED 4 /* Actively using the SCSI bus */
141: #define SPC_DISCONNECT 5 /* MSG_DISCONNECT received */
142: #define SPC_CMDCOMPLETE 6 /* MSG_CMDCOMPLETE received */
143: #define SPC_CLEANING 7
144: u_char sc_flags;
145: #define SPC_DROP_MSGIN 0x01 /* Discard all msgs (parity err detected) */
146: #define SPC_ABORTING 0x02 /* Bailing out */
147: #define SPC_DOINGDMA 0x04 /* doing DMA */
148: #define SPC_INACTIVE 0x80 /* The FIFO data path is active! */
149: u_char sc_selid; /* Reselection ID */
150:
151: /* Message stuff */
152: u_char sc_msgpriq; /* Messages we want to send */
153: u_char sc_msgoutq; /* Messages sent during last MESSAGE OUT */
154: u_char sc_lastmsg; /* Message last transmitted */
155: u_char sc_currmsg; /* Message currently ready to transmit */
156: #define SEND_DEV_RESET 0x01
157: #define SEND_PARITY_ERROR 0x02
158: #define SEND_INIT_DET_ERR 0x04
159: #define SEND_REJECT 0x08
160: #define SEND_IDENTIFY 0x10
161: #define SEND_ABORT 0x20
162: #define SEND_SDTR 0x40
163: #define SEND_WDTR 0x80
164: #define SPC_MAX_MSG_LEN 8
165: u_char sc_omess[SPC_MAX_MSG_LEN];
166: u_char *sc_omp; /* Outgoing message pointer */
167: u_char sc_imess[SPC_MAX_MSG_LEN];
168: u_char *sc_imp; /* Incoming message pointer */
169:
170: /* Hardware stuff */
171: int sc_initiator; /* Our scsi id */
172: int sc_freq; /* Clock frequency in MHz */
173: int sc_minsync; /* Minimum sync period / 4 */
174: int sc_maxsync; /* Maximum sync period / 4 */
175: int sc_ctlflags;
176:
177: /* DMA function set from MD code */
178: int (*sc_dma_start)(struct spc_softc *, void *, size_t, int);
179: int (*sc_dma_done)(struct spc_softc *);
180:
181: /* Reset hook */
182: void (*sc_reset)(struct spc_softc *);
183: };
184:
185: #ifdef SPC_DEBUG
186: #define SPC_SHOWACBS 0x01
187: #define SPC_SHOWINTS 0x02
188: #define SPC_SHOWCMDS 0x04
189: #define SPC_SHOWMISC 0x08
190: #define SPC_SHOWTRACE 0x10
191: #define SPC_SHOWSTART 0x20
192: #define SPC_DOBREAK 0x40
193: extern int spc_debug; /* SPC_SHOWSTART|SPC_SHOWMISC|SPC_SHOWTRACE; */
194: #define SPC_PRINT(b, s) do {if ((spc_debug & (b)) != 0) printf s;} while (0)
195: #define SPC_BREAK() do {if ((spc_debug & SPC_DOBREAK) != 0) Debugger();} while (0)
196: #define SPC_ASSERT(x) do {if (x) {} else {printf("%s at line %d: assertion failed\n", sc->sc_dev.dv_xname, __LINE__); Debugger();}} while (0)
197: #else
198: #define SPC_PRINT(b, s)
199: #define SPC_BREAK()
200: #define SPC_ASSERT(x)
201: #endif
202:
203: #define SPC_ACBS(s) SPC_PRINT(SPC_SHOWACBS, s)
204: #define SPC_INTS(s) SPC_PRINT(SPC_SHOWINTS, s)
205: #define SPC_CMDS(s) SPC_PRINT(SPC_SHOWCMDS, s)
206: #define SPC_MISC(s) SPC_PRINT(SPC_SHOWMISC, s)
207: #define SPC_TRACE(s) SPC_PRINT(SPC_SHOWTRACE, s)
208: #define SPC_START(s) SPC_PRINT(SPC_SHOWSTART, s)
209:
210: void spc_attach(struct spc_softc *);
211: int spc_intr(void *);
212: void spc_init(struct spc_softc *);
213: void spc_sched(struct spc_softc *);
214: int spc_scsi_cmd(struct scsi_xfer *);
215: void spc_reset(struct spc_softc *);
216:
217: #define SPC_ADDRESS(o) (sc->sc_regs + ((o) << 1) + 1)
218: #define spc_read(o) *(volatile u_int8_t *)(SPC_ADDRESS(o))
219: #define spc_write(o, v) *(volatile u_int8_t *)(SPC_ADDRESS(o)) = (v)
220:
221: #endif /* _MB89352VAR_H_ */
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