1 | /* $wasabi: ld_twa.c,v 1.9 2006/02/14 18:44:37 jordanr Exp $ */ |
2 | /* $NetBSD: ld_twa.c,v 1.19 2016/09/27 03:33:32 pgoyette Exp $ */ |
3 | |
4 | /*- |
5 | * Copyright (c) 2000, 2001, 2002, 2003, 2004 The NetBSD Foundation, Inc. |
6 | * All rights reserved. |
7 | * |
8 | * This code is derived from software contributed to The NetBSD Foundation |
9 | * by Andrew Doran, and by Jason R. Thorpe and Jordan Rhody of Wasabi |
10 | * Systems, Inc. |
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 | * |
21 | * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS |
22 | * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED |
23 | * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
24 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS |
25 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
26 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
27 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
28 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
29 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
30 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
31 | * POSSIBILITY OF SUCH DAMAGE. |
32 | */ |
33 | |
34 | /* |
35 | * 3ware "Apache" RAID controller front-end for ld(4) driver. |
36 | */ |
37 | |
38 | #include <sys/cdefs.h> |
39 | __KERNEL_RCSID(0, "$NetBSD: ld_twa.c,v 1.19 2016/09/27 03:33:32 pgoyette Exp $" ); |
40 | |
41 | #include <sys/param.h> |
42 | #include <sys/systm.h> |
43 | #include <sys/kernel.h> |
44 | #include <sys/device.h> |
45 | #include <sys/buf.h> |
46 | #include <sys/bufq.h> |
47 | #include <sys/endian.h> |
48 | #include <sys/dkio.h> |
49 | #include <sys/disk.h> |
50 | #include <sys/proc.h> |
51 | #include <sys/module.h> |
52 | #include <sys/bus.h> |
53 | |
54 | #include <dev/ldvar.h> |
55 | |
56 | #include <dev/scsipi/scsipi_all.h> |
57 | #include <dev/scsipi/scsipi_disk.h> |
58 | #include <dev/scsipi/scsipiconf.h> |
59 | #include <dev/scsipi/scsi_disk.h> |
60 | |
61 | |
62 | #include <dev/pci/pcireg.h> |
63 | #include <dev/pci/pcivar.h> |
64 | #include <dev/pci/twareg.h> |
65 | #include <dev/pci/twavar.h> |
66 | |
67 | #include "ioconf.h" |
68 | |
69 | struct ld_twa_softc { |
70 | struct ld_softc sc_ld; |
71 | int sc_hwunit; |
72 | }; |
73 | |
74 | static void ld_twa_attach(device_t, device_t, void *); |
75 | static int ld_twa_detach(device_t, int); |
76 | static int ld_twa_dobio(struct ld_twa_softc *, void *, size_t, daddr_t, |
77 | struct buf *); |
78 | static int ld_twa_dump(struct ld_softc *, void *, int, int); |
79 | static int ld_twa_flush(struct ld_softc *, int); |
80 | static void ld_twa_handler(struct twa_request *); |
81 | static int ld_twa_match(device_t, cfdata_t, void *); |
82 | static int ld_twa_start(struct ld_softc *, struct buf *); |
83 | |
84 | static void ld_twa_adjqparam(device_t, int); |
85 | |
86 | static int ld_twa_scsicmd(struct ld_twa_softc *, |
87 | struct twa_request *, struct buf *); |
88 | |
89 | CFATTACH_DECL_NEW(ld_twa, sizeof(struct ld_twa_softc), |
90 | ld_twa_match, ld_twa_attach, ld_twa_detach, NULL); |
91 | |
92 | static const struct twa_callbacks ld_twa_callbacks = { |
93 | ld_twa_adjqparam, |
94 | }; |
95 | |
96 | static int |
97 | ld_twa_match(device_t parent, cfdata_t match, void *aux) |
98 | { |
99 | |
100 | return (1); |
101 | } |
102 | |
103 | static void |
104 | ld_twa_attach(device_t parent, device_t self, void *aux) |
105 | { |
106 | struct twa_attach_args *twa_args = aux; |
107 | struct ld_twa_softc *sc = device_private(self); |
108 | struct ld_softc *ld = &sc->sc_ld; |
109 | struct twa_softc *twa = device_private(parent); |
110 | |
111 | ld->sc_dv = self; |
112 | |
113 | twa_register_callbacks(twa, twa_args->twaa_unit, &ld_twa_callbacks); |
114 | |
115 | sc->sc_hwunit = twa_args->twaa_unit; |
116 | ld->sc_maxxfer = twa_get_maxxfer(twa_get_maxsegs()); |
117 | ld->sc_secperunit = twa->sc_units[sc->sc_hwunit].td_size; |
118 | ld->sc_flags = LDF_ENABLED; |
119 | ld->sc_secsize = TWA_SECTOR_SIZE; |
120 | ld->sc_maxqueuecnt = twa->sc_units[sc->sc_hwunit].td_openings; |
121 | ld->sc_start = ld_twa_start; |
122 | ld->sc_dump = ld_twa_dump; |
123 | ld->sc_flush = ld_twa_flush; |
124 | ldattach(ld, BUFQ_DISK_DEFAULT_STRAT); |
125 | } |
126 | |
127 | static int |
128 | ld_twa_detach(device_t self, int flags) |
129 | { |
130 | struct ld_twa_softc *sc = device_private(self); |
131 | struct ld_softc *ld = &sc->sc_ld; |
132 | int error; |
133 | |
134 | if ((error = ldbegindetach(ld, flags)) != 0) |
135 | return (error); |
136 | ldenddetach(ld); |
137 | |
138 | return (0); |
139 | } |
140 | |
141 | static int |
142 | ld_twa_dobio(struct ld_twa_softc *sc, void *data, size_t datasize, |
143 | daddr_t blkno, struct buf *bp) |
144 | { |
145 | int rv; |
146 | struct twa_request *tr; |
147 | struct twa_softc *twa; |
148 | |
149 | twa = device_private(device_parent(sc->sc_ld.sc_dv)); |
150 | |
151 | if ((tr = twa_get_request(twa, 0)) == NULL) { |
152 | return (EAGAIN); |
153 | } |
154 | if (bp->b_flags & B_READ) { |
155 | tr->tr_flags = TWA_CMD_DATA_OUT; |
156 | } else { |
157 | tr->tr_flags = TWA_CMD_DATA_IN; |
158 | } |
159 | |
160 | tr->tr_data = data; |
161 | tr->tr_length = datasize; |
162 | tr->tr_cmd_pkt_type = |
163 | (TWA_CMD_PKT_TYPE_9K | TWA_CMD_PKT_TYPE_EXTERNAL); |
164 | |
165 | tr->tr_command->cmd_hdr.header_desc.size_header = 128; |
166 | |
167 | tr->tr_command->command.cmd_pkt_9k.command.opcode = |
168 | TWA_OP_EXECUTE_SCSI_COMMAND; |
169 | tr->tr_command->command.cmd_pkt_9k.unit = |
170 | sc->sc_hwunit; |
171 | tr->tr_command->command.cmd_pkt_9k.request_id = |
172 | tr->tr_request_id; |
173 | tr->tr_command->command.cmd_pkt_9k.status = 0; |
174 | tr->tr_command->command.cmd_pkt_9k.sgl_entries = 1; |
175 | tr->tr_command->command.cmd_pkt_9k.sgl_offset = 16; |
176 | |
177 | /* offset from end of hdr = max cdb len */ |
178 | ld_twa_scsicmd(sc, tr, bp); |
179 | |
180 | tr->tr_callback = ld_twa_handler; |
181 | tr->tr_ld_sc = sc; |
182 | |
183 | tr->bp = bp; |
184 | |
185 | rv = twa_map_request(tr); |
186 | |
187 | return (rv); |
188 | } |
189 | |
190 | static int |
191 | ld_twa_start(struct ld_softc *ld, struct buf *bp) |
192 | { |
193 | |
194 | return (ld_twa_dobio((struct ld_twa_softc *)ld, bp->b_data, |
195 | bp->b_bcount, bp->b_rawblkno, bp)); |
196 | } |
197 | |
198 | static void |
199 | ld_twa_handler(struct twa_request *tr) |
200 | { |
201 | uint8_t status; |
202 | struct buf *bp; |
203 | struct ld_twa_softc *sc; |
204 | |
205 | bp = tr->bp; |
206 | sc = (struct ld_twa_softc *)tr->tr_ld_sc; |
207 | |
208 | status = tr->tr_command->command.cmd_pkt_9k.status; |
209 | |
210 | if (status != 0) { |
211 | bp->b_error = EIO; |
212 | bp->b_resid = bp->b_bcount; |
213 | } else { |
214 | bp->b_resid = 0; |
215 | bp->b_error = 0; |
216 | } |
217 | twa_release_request(tr); |
218 | |
219 | lddone(&sc->sc_ld, bp); |
220 | } |
221 | |
222 | static int |
223 | ld_twa_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt) |
224 | { |
225 | |
226 | #if 0 |
227 | /* XXX Unsafe right now. */ |
228 | return (ld_twa_dobio((struct ld_twa_softc *)ld, data, |
229 | blkcnt * ld->sc_secsize, blkno, NULL)); |
230 | #else |
231 | return EIO; |
232 | #endif |
233 | |
234 | } |
235 | |
236 | |
237 | static int |
238 | ld_twa_flush(struct ld_softc *ld, int flags) |
239 | { |
240 | int s, rv = 0; |
241 | struct twa_request *tr; |
242 | struct twa_softc *twa = device_private(device_parent(ld->sc_dv)); |
243 | struct ld_twa_softc *sc = (void *)ld; |
244 | struct twa_command_generic *generic_cmd; |
245 | |
246 | /* Get a request packet. */ |
247 | tr = twa_get_request_wait(twa, 0); |
248 | KASSERT(tr != NULL); |
249 | |
250 | tr->tr_cmd_pkt_type = |
251 | (TWA_CMD_PKT_TYPE_9K | TWA_CMD_PKT_TYPE_EXTERNAL); |
252 | |
253 | tr->tr_callback = twa_request_wait_handler; |
254 | tr->tr_ld_sc = sc; |
255 | |
256 | tr->tr_command->cmd_hdr.header_desc.size_header = 128; |
257 | |
258 | generic_cmd = &(tr->tr_command->command.cmd_pkt_7k.generic); |
259 | generic_cmd->opcode = TWA_OP_FLUSH; |
260 | generic_cmd->size = 2; |
261 | generic_cmd->unit = sc->sc_hwunit; |
262 | generic_cmd->request_id = tr->tr_request_id; |
263 | generic_cmd->sgl_offset = 0; |
264 | generic_cmd->host_id = 0; |
265 | generic_cmd->status = 0; |
266 | generic_cmd->flags = 0; |
267 | generic_cmd->count = 0; |
268 | rv = twa_map_request(tr); |
269 | s = splbio(); |
270 | while (tr->tr_status != TWA_CMD_COMPLETE) |
271 | if ((rv = tsleep(tr, PRIBIO, "twaflush" , 60 * hz)) != 0) |
272 | break; |
273 | twa_release_request(tr); |
274 | splx(s); |
275 | |
276 | return (rv); |
277 | } |
278 | |
279 | static void |
280 | ld_twa_adjqparam(device_t self, int openings) |
281 | { |
282 | struct ld_twa_softc *sc = device_private(self); |
283 | struct ld_softc *ld = &sc->sc_ld; |
284 | |
285 | ldadjqparam(ld, openings); |
286 | } |
287 | |
288 | |
289 | static int |
290 | ld_twa_scsicmd(struct ld_twa_softc *sc, |
291 | struct twa_request *tr, struct buf *bp) |
292 | { |
293 | if (tr->tr_flags == TWA_CMD_DATA_IN) { |
294 | tr->tr_command->command.cmd_pkt_9k.cdb[0] = WRITE_16; |
295 | } else { |
296 | tr->tr_command->command.cmd_pkt_9k.cdb[0] = READ_16; |
297 | } |
298 | tr->tr_command->command.cmd_pkt_9k.cdb[1] = |
299 | (sc->sc_hwunit << 5); /* lun for CDB */ |
300 | |
301 | _lto8b(htole64(bp->b_rawblkno), |
302 | &tr->tr_command->command.cmd_pkt_9k.cdb[2]); |
303 | _lto4b(htole32((bp->b_bcount / TWA_SECTOR_SIZE)), |
304 | &tr->tr_command->command.cmd_pkt_9k.cdb[10]); |
305 | |
306 | tr->tr_command->command.cmd_pkt_9k.cdb[14] = 0; |
307 | tr->tr_command->command.cmd_pkt_9k.cdb[15] = 0; |
308 | |
309 | return (0); |
310 | } |
311 | |
312 | MODULE(MODULE_CLASS_DRIVER, ld_twa, "ld,twa" ); |
313 | |
314 | #ifdef _MODULE |
315 | /* |
316 | * XXX Don't allow ioconf.c to redefine the "struct cfdriver ld_cd" |
317 | * XXX it will be defined in the common-code module |
318 | */ |
319 | #undef CFDRIVER_DECL |
320 | #define CFDRIVER_DECL(name, class, attr) |
321 | #include "ioconf.c" |
322 | #endif |
323 | |
324 | static int |
325 | ld_twa_modcmd(modcmd_t cmd, void *opaque) |
326 | { |
327 | #ifdef _MODULE |
328 | /* |
329 | * We ignore the cfdriver_vec[] that ioconf provides, since |
330 | * the cfdrivers are attached already. |
331 | */ |
332 | static struct cfdriver * const no_cfdriver_vec[] = { NULL }; |
333 | #endif |
334 | int error = 0; |
335 | |
336 | #ifdef _MODULE |
337 | switch (cmd) { |
338 | case MODULE_CMD_INIT: |
339 | error = config_init_component(no_cfdriver_vec, |
340 | cfattach_ioconf_ld_twa, cfdata_ioconf_ld_twa); |
341 | break; |
342 | case MODULE_CMD_FINI: |
343 | error = config_fini_component(no_cfdriver_vec, |
344 | cfattach_ioconf_ld_twa, cfdata_ioconf_ld_twa); |
345 | break; |
346 | default: |
347 | error = ENOTTY; |
348 | break; |
349 | } |
350 | #endif |
351 | |
352 | return error; |
353 | } |
354 | |