Annotation of sys/dev/ic/osiopvar.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: osiopvar.h,v 1.10 2007/04/13 18:34:48 krw Exp $ */
2: /* $NetBSD: osiopvar.h,v 1.3 2002/05/14 02:58:35 matt Exp $ */
3:
4: /*
5: * Copyright (c) 2001 Izumi Tsutsui. 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: * 3. The name of the author may not be used to endorse or promote products
16: * derived from this software without specific prior written permission.
17: *
18: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28: */
29:
30: /*
31: * Copyright (c) 1990 The Regents of the University of California.
32: * All rights reserved.
33: *
34: * This code is derived from software contributed to Berkeley by
35: * Van Jacobson of Lawrence Berkeley Laboratory.
36: *
37: * Redistribution and use in source and binary forms, with or without
38: * modification, are permitted provided that the following conditions
39: * are met:
40: * 1. Redistributions of source code must retain the above copyright
41: * notice, this list of conditions and the following disclaimer.
42: * 2. Redistributions in binary form must reproduce the above copyright
43: * notice, this list of conditions and the following disclaimer in the
44: * documentation and/or other materials provided with the distribution.
45: * 3. Neither the name of the University nor the names of its contributors
46: * may be used to endorse or promote products derived from this software
47: * without specific prior written permission.
48: *
49: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
50: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
51: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
52: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
53: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
54: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
55: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
56: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
57: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
58: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
59: * SUCH DAMAGE.
60: *
61: * @(#)siopvar.h 7.1 (Berkeley) 5/8/90
62: */
63:
64: #define osiop_read_1(sc, reg) \
65: bus_space_read_1((sc)->sc_bst, (sc)->sc_reg, reg)
66: #define osiop_write_1(sc, reg, val) \
67: bus_space_write_1((sc)->sc_bst, (sc)->sc_reg, reg, val)
68:
69: #define osiop_read_4(sc, reg) \
70: bus_space_read_4((sc)->sc_bst, (sc)->sc_reg, reg)
71: #define osiop_write_4(sc, reg, val) \
72: bus_space_write_4((sc)->sc_bst, (sc)->sc_reg, reg, val)
73:
74: /*
75: * The largest single request will be MAXPHYS bytes which will require
76: * at most MAXPHYS/NBPG+1 chain elements to describe, i.e. if none of
77: * the buffer pages are physically contiguous (MAXPHYS/NBPG) and the
78: * buffer is not page aligned (+1).
79: */
80: /* XXX This should be (MAXPHYS / NBPG + 1), but hardcoded in script */
81: #define OSIOP_NSG (16 + 1)
82: #if MAXPHYS > (PAGE_SIZE * (OSIOP_NSG - 1))
83: #define OSIOP_MAX_XFER (PAGE_SIZE * (OSIOP_NSG - 1))
84: #else
85: #define OSIOP_MAX_XFER MAXPHYS
86: #endif
87:
88: #define OSIOP_NTGT 8
89: #define OSIOP_NACB 32 /* XXX (PAGE_SIZE / sizeof(osiop_ds)) is better? */
90:
91: /*
92: * Data Structure for SCRIPTS program
93: */
94: typedef struct buf_table {
95: u_int32_t count;
96: u_int32_t addr;
97: } buf_table_t;
98:
99: struct osiop_ds {
100: u_int32_t scsi_addr; /* SCSI ID & sync */
101: u_int32_t pad1;
102: buf_table_t id; /* Identify message */
103: buf_table_t cmd; /* SCSI command */
104: buf_table_t status; /* Status */
105: buf_table_t msg; /* Message */
106: buf_table_t msgin; /* Message in */
107: buf_table_t extmsg; /* Extended message in */
108: buf_table_t synmsg; /* Sync transfer request */
109: buf_table_t data[OSIOP_NSG]; /* DMA S/G buffers */
110:
111: u_int8_t msgout[8];
112: u_int8_t msgbuf[8];
113: u_int8_t stat[8];
114:
115: struct scsi_generic scsi_cmd; /* DMA'able copy of xs->cmd */
116: u_int32_t pad[1+3]; /* pad to 256 bytes */
117: } __packed;
118:
119: /* status can hold the SCSI_* status values, and 2 additional values: */
120: #define SCSI_OSIOP_NOCHECK 0xfe /* don't check the scsi status */
121: #define SCSI_OSIOP_NOSTATUS 0xff /* device didn't report status */
122:
123: #define MSG_INVALID 0xff /* dummy value for message buffer */
124:
125: #define OSIOP_DSOFF(x) offsetof(struct osiop_ds, x)
126: #define OSIOP_DSIDOFF OSIOP_DSOFF(msgout[0])
127: #define OSIOP_DSMSGOFF OSIOP_DSOFF(msgbuf[0])
128: #define OSIOP_DSMSGINOFF OSIOP_DSOFF(msgbuf[1])
129: #define OSIOP_DSEXTMSGOFF OSIOP_DSOFF(msgbuf[2])
130: #define OSIOP_DSSYNMSGOFF OSIOP_DSOFF(msgbuf[3])
131: #define OSIOP_DSSTATOFF OSIOP_DSOFF(stat[0])
132: #define OSIOP_DSCMDOFF OSIOP_DSOFF(scsi_cmd)
133:
134: /*
135: * ACB. Holds additional information for each SCSI command Comments:
136: * Basicly, we refrain from fiddling with the scsi_xfer struct
137: * (except do the expected updating of return values).
138: * We'll generally update: xs->{flags,resid,error,status} and
139: * occasionally xs->retries.
140: */
141: struct osiop_acb {
142: TAILQ_ENTRY(osiop_acb) chain;
143: struct scsi_xfer *xs; /* SCSI xfer ctrl block from upper layer */
144: struct osiop_softc *sc; /* points back to our adapter */
145:
146: bus_dmamap_t datadma; /* DMA map for data transfer */
147:
148: struct osiop_ds *ds; /* data structure for this acb */
149: bus_size_t dsoffset; /* offset of data structure for this acb */
150:
151: int xsflags; /* copy of xs->flags */
152: int datalen;
153: void *data; /* transfer data buffer ptr */
154:
155: bus_addr_t curaddr; /* current transfer data buffer */
156: bus_size_t curlen; /* current transfer data length */
157:
158: int status; /* status of this acb */
159: /* status defs */
160: #define ACB_S_FREE 0 /* cmd slot is free */
161: #define ACB_S_READY 1 /* cmd slot is waiting for processing */
162: #define ACB_S_ACTIVE 2 /* cmd slot is being processed */
163: #define ACB_S_DONE 3 /* cmd slot has been processed */
164:
165: int flags; /* cmd slot flags */
166: #define ACB_F_TIMEOUT 0x01 /* command timeout */
167: #define ACB_F_AUTOSENSE 0x02 /* request sense due to SCSI_CHECK */
168:
169: u_int8_t intstat; /* buffer to save sc_flags on disconnect */
170: };
171:
172: /*
173: * Some info about each (possible) target on the SCSI bus. This should
174: * probably have been a "per target+lunit" structure, but we'll leave it at
175: * this for now. Is there a way to reliably hook it up to sc->fordriver??
176: */
177: struct osiop_tinfo {
178: int cmds; /* number of commands processed */
179: int senses; /* number of sense requests */
180: int dconns; /* number of disconnects */
181: int touts; /* number of timeouts */
182: int perrs; /* number of parity errors */
183: int lubusy; /* What local units/subr. are busy? */
184: int period; /* Period suggestion */
185: int offset; /* Offset suggestion */
186: int flags; /* misc flags per each target */
187: #define TI_NOSYNC 0x01 /* disable sync xfer on this target */
188: #define TI_NODISC 0x02 /* disable disconnect on this target */
189: int state; /* negotiation state */
190: u_int8_t sxfer; /* value for SXFER reg */
191: u_int8_t sbcl; /* value for SBCL reg */
192: };
193:
194: struct osiop_softc {
195: struct device sc_dev;
196:
197: bus_space_tag_t sc_bst; /* bus space tag */
198: bus_space_handle_t sc_reg; /* register I/O handle */
199:
200: bus_dma_tag_t sc_dmat; /* bus dma tag */
201: bus_dmamap_t sc_scrdma; /* script dma map */
202: bus_dmamap_t sc_dsdma; /* script data dma map */
203:
204: u_int32_t *sc_script; /* ptr to script memory */
205: struct osiop_ds *sc_ds; /* ptr to data structure memory */
206:
207: int sc_id; /* adapter SCSI id */
208: int sc_active; /* number of active I/O's */
209:
210: struct osiop_acb *sc_nexus; /* current command */
211: struct osiop_acb *sc_acb; /* the real command blocks */
212:
213: /* Lists of command blocks */
214: TAILQ_HEAD(acb_list, osiop_acb) free_list,
215: ready_list,
216: nexus_list;
217:
218: struct scsi_link sc_link;
219:
220: struct osiop_tinfo sc_tinfo[OSIOP_NTGT];
221:
222: int sc_clock_freq;
223: int sc_tcp[4];
224: int sc_flags;
225: #define OSIOP_INTSOFF 0x80 /* Interrupts turned off */
226: #define OSIOP_INTDEFER 0x40 /* MD interrupt has been deferred */
227: #define OSIOP_NODMA 0x02 /* No DMA transfer */
228: #define OSIOP_ALIVE 0x01 /* controller initialized */
229:
230: int sc_cfflags; /* copy of config flags */
231:
232: int sc_minsync;
233:
234: u_int8_t sc_dstat;
235: u_int8_t sc_sstat0;
236: u_int8_t sc_sstat1;
237: u_int8_t sc_istat;
238: u_int8_t sc_dcntl;
239: u_int8_t sc_ctest7;
240: u_int8_t sc_dmode;
241: u_int8_t sc_sien;
242: u_int8_t sc_dien;
243: };
244:
245: /* negotiation states */
246: #define NEG_INIT 0 /* Initial negotiate state */
247: #define NEG_SYNC NEG_INIT /* Negotiate synch transfers */
248: #define NEG_WAITS 1 /* Waiting for synch negotiation response */
249: #define NEG_DONE 2 /* Wide and/or sync negotiation done */
250:
251: void osiop_attach(struct osiop_softc *);
252: void osiop_intr(struct osiop_softc *);
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