1 | /* $NetBSD: ld_amr.c,v 1.25 2016/09/27 03:33:32 pgoyette Exp $ */ |
2 | |
3 | /*- |
4 | * Copyright (c) 2002, 2003 The NetBSD Foundation, Inc. |
5 | * All rights reserved. |
6 | * |
7 | * This code is derived from software contributed to The NetBSD Foundation |
8 | * by Andrew Doran. |
9 | * |
10 | * Redistribution and use in source and binary forms, with or without |
11 | * modification, are permitted provided that the following conditions |
12 | * are met: |
13 | * 1. Redistributions of source code must retain the above copyright |
14 | * notice, this list of conditions and the following disclaimer. |
15 | * 2. Redistributions in binary form must reproduce the above copyright |
16 | * notice, this list of conditions and the following disclaimer in the |
17 | * documentation and/or other materials provided with the distribution. |
18 | * |
19 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
20 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
21 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
22 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
23 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
24 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
25 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
26 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
27 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
28 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
29 | * POSSIBILITY OF SUCH DAMAGE. |
30 | */ |
31 | |
32 | /* |
33 | * AMI RAID controller front-end for ld(4) driver. |
34 | */ |
35 | |
36 | #include <sys/cdefs.h> |
37 | __KERNEL_RCSID(0, "$NetBSD: ld_amr.c,v 1.25 2016/09/27 03:33:32 pgoyette Exp $" ); |
38 | |
39 | #include <sys/param.h> |
40 | #include <sys/systm.h> |
41 | #include <sys/kernel.h> |
42 | #include <sys/device.h> |
43 | #include <sys/buf.h> |
44 | #include <sys/bufq.h> |
45 | #include <sys/endian.h> |
46 | #include <sys/dkio.h> |
47 | #include <sys/disk.h> |
48 | #include <sys/module.h> |
49 | |
50 | #include <sys/bus.h> |
51 | |
52 | #include <dev/ldvar.h> |
53 | |
54 | #include <dev/pci/pcireg.h> |
55 | #include <dev/pci/pcivar.h> |
56 | #include <dev/pci/amrreg.h> |
57 | #include <dev/pci/amrvar.h> |
58 | |
59 | #include "ioconf.h" |
60 | |
61 | struct ld_amr_softc { |
62 | struct ld_softc sc_ld; |
63 | int sc_hwunit; |
64 | }; |
65 | |
66 | static int ld_amr_dobio(struct ld_amr_softc *, void *, int, int, int, |
67 | struct buf *); |
68 | static int ld_amr_dump(struct ld_softc *, void *, int, int); |
69 | static void ld_amr_handler(struct amr_ccb *); |
70 | static int ld_amr_start(struct ld_softc *, struct buf *); |
71 | |
72 | static int |
73 | ld_amr_match(device_t parent, cfdata_t match, void *aux) |
74 | { |
75 | return (1); |
76 | } |
77 | |
78 | static void |
79 | ld_amr_attach(device_t parent, device_t self, void *aux) |
80 | { |
81 | struct amr_attach_args *amra = aux; |
82 | struct ld_amr_softc *sc = device_private(self); |
83 | struct ld_softc *ld = &sc->sc_ld; |
84 | struct amr_softc *amr = device_private(parent); |
85 | const char *statestr; |
86 | int happy; |
87 | |
88 | ld->sc_dv = self; |
89 | |
90 | sc->sc_hwunit = amra->amra_unit; |
91 | ld->sc_maxxfer = amr_max_xfer; |
92 | ld->sc_maxqueuecnt = (amr->amr_maxqueuecnt - AMR_NCCB_RESV) |
93 | / amr->amr_numdrives; |
94 | ld->sc_secperunit = amr->amr_drive[sc->sc_hwunit].al_size; |
95 | ld->sc_secsize = AMR_SECTOR_SIZE; |
96 | ld->sc_start = ld_amr_start; |
97 | ld->sc_dump = ld_amr_dump; |
98 | |
99 | if (ld->sc_maxqueuecnt > AMR_MAX_CMDS_PU) |
100 | ld->sc_maxqueuecnt = AMR_MAX_CMDS_PU; |
101 | |
102 | /* |
103 | * Print status information and attach to the ld driver proper. |
104 | */ |
105 | statestr = amr_drive_state(amr->amr_drive[sc->sc_hwunit].al_state, |
106 | &happy); |
107 | if (happy) |
108 | ld->sc_flags = LDF_ENABLED; |
109 | aprint_normal(": RAID %d, %s\n" , |
110 | amr->amr_drive[sc->sc_hwunit].al_properties & AMR_DRV_RAID_MASK, |
111 | statestr); |
112 | |
113 | ldattach(ld, BUFQ_DISK_DEFAULT_STRAT); |
114 | } |
115 | |
116 | CFATTACH_DECL_NEW(ld_amr, sizeof(struct ld_amr_softc), |
117 | ld_amr_match, ld_amr_attach, NULL, NULL); |
118 | |
119 | static int |
120 | ld_amr_dobio(struct ld_amr_softc *sc, void *data, int datasize, |
121 | int blkno, int dowrite, struct buf *bp) |
122 | { |
123 | struct amr_ccb *ac; |
124 | struct amr_softc *amr; |
125 | struct amr_mailbox_cmd *mb; |
126 | int rv; |
127 | |
128 | amr = device_private(device_parent(sc->sc_ld.sc_dv)); |
129 | |
130 | if ((rv = amr_ccb_alloc(amr, &ac)) != 0) |
131 | return (rv); |
132 | |
133 | mb = &ac->ac_cmd; |
134 | mb->mb_command = (dowrite ? AMR_CMD_LWRITE : AMR_CMD_LREAD); |
135 | mb->mb_drive = sc->sc_hwunit; |
136 | mb->mb_blkcount = htole16(datasize / AMR_SECTOR_SIZE); |
137 | mb->mb_lba = htole32(blkno); |
138 | |
139 | rv = amr_ccb_map(amr, ac, data, datasize, |
140 | (dowrite ? AC_XFER_OUT : AC_XFER_IN)); |
141 | if (rv != 0) { |
142 | amr_ccb_free(amr, ac); |
143 | return (rv); |
144 | } |
145 | |
146 | if (bp == NULL) { |
147 | /* |
148 | * Polled commands must not sit on the software queue. Wait |
149 | * up to 30 seconds for the command to complete. |
150 | */ |
151 | rv = amr_ccb_poll(amr, ac, 30000); |
152 | amr_ccb_unmap(amr, ac); |
153 | amr_ccb_free(amr, ac); |
154 | } else { |
155 | ac->ac_handler = ld_amr_handler; |
156 | ac->ac_context = bp; |
157 | ac->ac_dv = sc->sc_ld.sc_dv; |
158 | amr_ccb_enqueue(amr, ac); |
159 | rv = 0; |
160 | } |
161 | |
162 | return (rv); |
163 | } |
164 | |
165 | static int |
166 | ld_amr_start(struct ld_softc *ld, struct buf *bp) |
167 | { |
168 | return (ld_amr_dobio((struct ld_amr_softc *)ld, bp->b_data, |
169 | bp->b_bcount, bp->b_rawblkno, (bp->b_flags & B_READ) == 0, bp)); |
170 | } |
171 | |
172 | static void |
173 | ld_amr_handler(struct amr_ccb *ac) |
174 | { |
175 | struct buf *bp; |
176 | struct ld_amr_softc *sc; |
177 | struct amr_softc *amr; |
178 | |
179 | bp = ac->ac_context; |
180 | sc = device_private(ac->ac_dv); |
181 | amr = device_private(device_parent(sc->sc_ld.sc_dv)); |
182 | |
183 | if (ac->ac_status != AMR_STATUS_SUCCESS) { |
184 | printf("%s: cmd status 0x%02x\n" , device_xname(sc->sc_ld.sc_dv), |
185 | ac->ac_status); |
186 | |
187 | bp->b_error = EIO; |
188 | bp->b_resid = bp->b_bcount; |
189 | } else |
190 | bp->b_resid = 0; |
191 | |
192 | amr_ccb_unmap(amr, ac); |
193 | amr_ccb_free(amr, ac); |
194 | lddone(&sc->sc_ld, bp); |
195 | } |
196 | |
197 | static int |
198 | ld_amr_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) |
199 | { |
200 | struct ld_amr_softc *sc; |
201 | |
202 | sc = (struct ld_amr_softc *)ld; |
203 | |
204 | return (ld_amr_dobio(sc, data, blkcnt * ld->sc_secsize, blkno, 1, |
205 | NULL)); |
206 | } |
207 | |
208 | MODULE(MODULE_CLASS_DRIVER, ld_amr, "ld,amr" ); |
209 | |
210 | #ifdef _MODULE |
211 | /* |
212 | * XXX Don't allow ioconf.c to redefine the "struct cfdriver ld_cd" |
213 | * XXX it will be defined in the common-code module |
214 | */ |
215 | #undef CFDRIVER_DECL |
216 | #define CFDRIVER_DECL(name, class, attr) |
217 | #include "ioconf.c" |
218 | #endif |
219 | |
220 | static int |
221 | ld_amr_modcmd(modcmd_t cmd, void *opaque) |
222 | { |
223 | #ifdef _MODULE |
224 | /* |
225 | * We ignore the cfdriver_vec[] that ioconf provides, since |
226 | * the cfdrivers are attached already. |
227 | */ |
228 | static struct cfdriver * const no_cfdriver_vec[] = { NULL }; |
229 | #endif |
230 | int error = 0; |
231 | |
232 | #ifdef _MODULE |
233 | switch (cmd) { |
234 | case MODULE_CMD_INIT: |
235 | error = config_init_component(no_cfdriver_vec, |
236 | cfattach_ioconf_ld_amr, cfdata_ioconf_ld_amr); |
237 | break; |
238 | case MODULE_CMD_FINI: |
239 | error = config_fini_component(no_cfdriver_vec, |
240 | cfattach_ioconf_ld_amr, cfdata_ioconf_ld_amr); |
241 | break; |
242 | default: |
243 | error = ENOTTY; |
244 | break; |
245 | } |
246 | #endif |
247 | |
248 | return error; |
249 | } |
250 | |