FreeBSD/Linux Kernel Cross Reference
sys/dev/ic/oosiopvar.h
1 /* $OpenBSD: oosiopvar.h,v 1.6 2020/07/22 13:16:04 krw 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 #include <uvm/uvm_extern.h>
31
32 #define OOSIOP_NTGT 8 /* Max targets */
33 #define OOSIOP_NCB 32 /* Initial command buffers */
34 #define OOSIOP_NSG (MIN(atop(MAXPHYS) + 1, 32)) /* Max S/G operation */
35 #define OOSIOP_MAX_XFER ptoa(OOSIOP_NSG - 1)
36
37 struct oosiop_xfer {
38 /* script for scatter/gather DMA (move*nsg+jump) */
39 u_int32_t datain_scr[(OOSIOP_NSG + 1) * 2];
40 u_int32_t dataout_scr[(OOSIOP_NSG + 1) * 2];
41
42 u_int8_t msgin[8];
43 u_int8_t msgout[8];
44 u_int8_t status;
45 u_int8_t pad[7];
46 } __packed;
47
48 #define SCSI_OOSIOP_NOSTATUS 0xff /* device didn't report status */
49
50 #define OOSIOP_XFEROFF(x) offsetof(struct oosiop_xfer, x)
51 #define OOSIOP_DINSCROFF OOSIOP_XFEROFF(datain_scr[0])
52 #define OOSIOP_DOUTSCROFF OOSIOP_XFEROFF(dataout_scr[0])
53 #define OOSIOP_MSGINOFF OOSIOP_XFEROFF(msgin[0])
54 #define OOSIOP_MSGOUTOFF OOSIOP_XFEROFF(msgout[0])
55
56 #define OOSIOP_XFERSCR_SYNC(sc, cb, ops) \
57 bus_dmamap_sync((sc)->sc_dmat, (cb)->xferdma, OOSIOP_DINSCROFF, \
58 OOSIOP_MSGINOFF - OOSIOP_DINSCROFF, (ops))
59 #define OOSIOP_DINSCR_SYNC(sc, cb, ops) \
60 bus_dmamap_sync((sc)->sc_dmat, (cb)->xferdma, OOSIOP_DINSCROFF, \
61 OOSIOP_DOUTSCROFF - OOSIOP_DINSCROFF, (ops))
62 #define OOSIOP_DOUTSCR_SYNC(sc, cb, ops) \
63 bus_dmamap_sync((sc)->sc_dmat, (cb)->xferdma, OOSIOP_DOUTSCROFF,\
64 OOSIOP_MSGINOFF - OOSIOP_DOUTSCROFF, (ops))
65 #define OOSIOP_XFERMSG_SYNC(sc, cb, ops) \
66 bus_dmamap_sync((sc)->sc_dmat, (cb)->xferdma, OOSIOP_MSGINOFF, \
67 sizeof(struct oosiop_xfer) - OOSIOP_MSGINOFF, (ops))
68
69 #define OOSIOP_SCRIPT_SYNC(sc, ops) \
70 bus_dmamap_sync((sc)->sc_dmat, (sc)->sc_scrdma, \
71 0, sizeof(oosiop_script), (ops))
72
73 struct oosiop_cb {
74 TAILQ_ENTRY(oosiop_cb) chain;
75
76 struct scsi_xfer *xs; /* SCSI xfer ctrl block from above */
77 int flags;
78 int id; /* target scsi id */
79 int lun; /* target lun */
80
81 bus_dmamap_t cmddma; /* DMA map for command out */
82 bus_dmamap_t datadma; /* DMA map for data I/O */
83 bus_dmamap_t xferdma; /* DMA map for xfer block */
84
85 int curdp; /* current data pointer */
86 int savedp; /* saved data pointer */
87 int msgoutlen;
88
89 int xsflags; /* copy of xs->flags */
90 int datalen; /* copy of xs->datalen */
91 int cmdlen; /* copy of xs->cmdlen */
92
93 struct oosiop_xfer *xfer; /* DMA xfer block */
94 };
95
96 /* oosiop_cb flags */
97 #define CBF_SELTOUT 0x01 /* Selection timeout */
98 #define CBF_TIMEOUT 0x02 /* Command timeout */
99 #define CBF_AUTOSENSE 0x04 /* Request sense due to SCSI_CHECK */
100
101 struct oosiop_target {
102 struct oosiop_cb *nexus;
103 int flags;
104 u_int8_t scf; /* synchronous clock divisor */
105 u_int8_t sxfer; /* synchronous period and offset */
106 };
107
108 /* target flags */
109 #define TGTF_SYNCNEG 0x01 /* Trigger synchronous negotiation */
110 #define TGTF_WAITSDTR 0x02 /* Waiting SDTR from target */
111
112 struct oosiop_softc {
113 struct device sc_dev;
114
115 bus_space_tag_t sc_bst; /* bus space tag */
116 bus_space_handle_t sc_bsh; /* bus space handle */
117
118 bus_dma_tag_t sc_dmat; /* bus DMA tag */
119 bus_dmamap_t sc_scrdma; /* script DMA map */
120
121 bus_addr_t sc_scrbase; /* script DMA base address */
122 u_int32_t *sc_scr; /* ptr to script memory */
123
124 int sc_chip; /* 700 or 700-66 */
125 #define OOSIOP_700 0
126 #define OOSIOP_700_66 1
127
128 int sc_id; /* SCSI ID of this interface */
129 int sc_freq; /* SCLK frequency */
130 int sc_ccf; /* asynchronous divisor (*10) */
131 u_int8_t sc_dcntl;
132 u_int8_t sc_minperiod;
133
134 struct oosiop_target sc_tgt[OOSIOP_NTGT];
135
136 /* Lists of command blocks */
137 TAILQ_HEAD(oosiop_cb_queue, oosiop_cb) sc_free_cb,
138 sc_cbq;
139
140 struct mutex sc_cb_mtx;
141 struct scsi_iopool sc_iopool;
142
143 struct oosiop_cb *sc_curcb; /* current command */
144 struct oosiop_cb *sc_lastcb; /* last activated command */
145
146 bus_addr_t sc_reselbuf; /* msgin buffer for reselection */
147 int sc_resid; /* reselected target id */
148
149 int sc_active;
150 int sc_nextdsp;
151
152 uint8_t sc_scntl0;
153 uint8_t sc_dmode;
154 uint8_t sc_dwt;
155 uint8_t sc_ctest7;
156 };
157
158 #define oosiop_read_1(sc, addr) \
159 bus_space_read_1((sc)->sc_bst, (sc)->sc_bsh, (addr))
160 #define oosiop_write_1(sc, addr, data) \
161 bus_space_write_1((sc)->sc_bst, (sc)->sc_bsh, (addr), (data))
162 /* XXX byte swapping should be handled by MD bus_space(9)? */
163 #define oosiop_read_4(sc, addr) \
164 letoh32(bus_space_read_4((sc)->sc_bst, (sc)->sc_bsh, (addr)))
165 #define oosiop_write_4(sc, addr, data) \
166 bus_space_write_4((sc)->sc_bst, (sc)->sc_bsh, (addr), htole32(data))
167
168 void oosiop_attach(struct oosiop_softc *);
169 int oosiop_intr(struct oosiop_softc *);
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