Annotation of sys/dev/ic/oosiopvar.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: oosiopvar.h,v 1.2 2004/03/14 12:23:49 miod Exp $ */
2: /* $NetBSD: oosiopvar.h,v 1.2 2003/05/03 18:11:23 wiz Exp $ */
3:
4: /*
5: * Copyright (c) 2001 Shuichiro URATA. 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: #define OOSIOP_NTGT 8 /* Max targets */
31: #define OOSIOP_NCB 32 /* Initial command buffers */
32: #define OOSIOP_NSG (MIN(btoc(MAXPHYS) + 1, 32)) /* Max S/G operation */
33: #define OOSIOP_MAX_XFER ctob(OOSIOP_NSG - 1)
34:
35: struct oosiop_xfer {
36: /* script for scatter/gather DMA (move*nsg+jump) */
37: u_int32_t datain_scr[(OOSIOP_NSG + 1) * 2];
38: u_int32_t dataout_scr[(OOSIOP_NSG + 1) * 2];
39:
40: u_int8_t msgin[8];
41: u_int8_t msgout[8];
42: u_int8_t status;
43: u_int8_t pad[7];
44: } __packed;
45:
46: #define SCSI_OOSIOP_NOSTATUS 0xff /* device didn't report status */
47:
48: #define OOSIOP_XFEROFF(x) offsetof(struct oosiop_xfer, x)
49: #define OOSIOP_DINSCROFF OOSIOP_XFEROFF(datain_scr[0])
50: #define OOSIOP_DOUTSCROFF OOSIOP_XFEROFF(dataout_scr[0])
51: #define OOSIOP_MSGINOFF OOSIOP_XFEROFF(msgin[0])
52: #define OOSIOP_MSGOUTOFF OOSIOP_XFEROFF(msgout[0])
53:
54: #define OOSIOP_XFERSCR_SYNC(sc, cb, ops) \
55: bus_dmamap_sync((sc)->sc_dmat, (cb)->xferdma, OOSIOP_DINSCROFF, \
56: OOSIOP_MSGINOFF - OOSIOP_DINSCROFF, (ops))
57: #define OOSIOP_DINSCR_SYNC(sc, cb, ops) \
58: bus_dmamap_sync((sc)->sc_dmat, (cb)->xferdma, OOSIOP_DINSCROFF, \
59: OOSIOP_DOUTSCROFF - OOSIOP_DINSCROFF, (ops))
60: #define OOSIOP_DOUTSCR_SYNC(sc, cb, ops) \
61: bus_dmamap_sync((sc)->sc_dmat, (cb)->xferdma, OOSIOP_DOUTSCROFF,\
62: OOSIOP_MSGINOFF - OOSIOP_DOUTSCROFF, (ops))
63: #define OOSIOP_XFERMSG_SYNC(sc, cb, ops) \
64: bus_dmamap_sync((sc)->sc_dmat, (cb)->xferdma, OOSIOP_MSGINOFF, \
65: sizeof(struct oosiop_xfer) - OOSIOP_MSGINOFF, (ops))
66:
67: #define OOSIOP_SCRIPT_SYNC(sc, ops) \
68: bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_scrdma, \
69: 0, sizeof(oosiop_script), (ops))
70:
71: struct oosiop_cb {
72: TAILQ_ENTRY(oosiop_cb) chain;
73:
74: struct scsi_xfer *xs; /* SCSI xfer ctrl block from above */
75: int flags;
76: int id; /* target scsi id */
77: int lun; /* target lun */
78:
79: bus_dmamap_t cmddma; /* DMA map for command out */
80: bus_dmamap_t datadma; /* DMA map for data I/O */
81: bus_dmamap_t xferdma; /* DMA map for xfer block */
82:
83: int curdp; /* current data pointer */
84: int savedp; /* saved data pointer */
85: int msgoutlen;
86:
87: int xsflags; /* copy of xs->flags */
88: int datalen; /* copy of xs->datalen */
89: int cmdlen; /* copy of xs->cmdlen */
90:
91: struct oosiop_xfer *xfer; /* DMA xfer block */
92: };
93:
94: /* oosiop_cb flags */
95: #define CBF_SELTOUT 0x01 /* Selection timeout */
96: #define CBF_TIMEOUT 0x02 /* Command timeout */
97: #define CBF_AUTOSENSE 0x04 /* Request sense due to SCSI_CHECK */
98:
99: struct oosiop_target {
100: struct oosiop_cb *nexus;
101: int flags;
102: u_int8_t scf; /* synchronous clock divisor */
103: u_int8_t sxfer; /* synchronous period and offset */
104: };
105:
106: /* target flags */
107: #define TGTF_SYNCNEG 0x01 /* Trigger synchronous negotiation */
108: #define TGTF_WAITSDTR 0x02 /* Waiting SDTR from target */
109:
110: struct oosiop_softc {
111: struct device sc_dev;
112:
113: bus_space_tag_t sc_bst; /* bus space tag */
114: bus_space_handle_t sc_bsh; /* bus space handle */
115:
116: bus_dma_tag_t sc_dmat; /* bus DMA tag */
117: bus_dmamap_t sc_scrdma; /* script DMA map */
118:
119: bus_addr_t sc_scrbase; /* script DMA base address */
120: u_int32_t *sc_scr; /* ptr to script memory */
121:
122: int sc_chip; /* 700 or 700-66 */
123: #define OOSIOP_700 0
124: #define OOSIOP_700_66 1
125:
126: int sc_id; /* SCSI ID of this interface */
127: int sc_freq; /* SCLK frequency */
128: int sc_ccf; /* asynchronous divisor (*10) */
129: u_int8_t sc_dcntl;
130: u_int8_t sc_minperiod;
131:
132: struct oosiop_target sc_tgt[OOSIOP_NTGT];
133:
134: struct scsi_link sc_link;
135:
136: /* Lists of command blocks */
137: TAILQ_HEAD(oosiop_cb_queue, oosiop_cb) sc_free_cb,
138: sc_cbq;
139:
140: struct oosiop_cb *sc_curcb; /* current command */
141: struct oosiop_cb *sc_lastcb; /* last activated command */
142:
143: bus_addr_t sc_reselbuf; /* msgin buffer for reselection */
144: int sc_resid; /* reselected target id */
145:
146: int sc_active;
147: int sc_nextdsp;
148: };
149:
150: #define oosiop_read_1(sc, addr) \
151: bus_space_read_1((sc)->sc_bst, (sc)->sc_bsh, (addr))
152: #define oosiop_write_1(sc, addr, data) \
153: bus_space_write_1((sc)->sc_bst, (sc)->sc_bsh, (addr), (data))
154: /* XXX byte swapping should be handled by MD bus_space(9)? */
155: #define oosiop_read_4(sc, addr) \
156: letoh32(bus_space_read_4((sc)->sc_bst, (sc)->sc_bsh, (addr)))
157: #define oosiop_write_4(sc, addr, data) \
158: bus_space_write_4((sc)->sc_bst, (sc)->sc_bsh, (addr), htole32(data))
159:
160: void oosiop_attach(struct oosiop_softc *);
161: int oosiop_intr(struct oosiop_softc *);
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