1 /* $wasabi: ld_twa.c,v 1.9 2006/02/14 18:44:37 jordanr Exp $ */
2 /* $NetBSD: ld_twa.c,v 1.20 2017/02/27 21:32:33 jdolecek 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 1.20 2017/02/27 21:32:33 jdolecek 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 *, bool);
80 static int ld_twa_ioctl(struct ld_softc *, u_long, void *, int32_t, bool);
81 static void ld_twa_handler(struct twa_request *);
82 static int ld_twa_match(device_t, cfdata_t, void *);
83 static int ld_twa_start(struct ld_softc *, struct buf *);
84
85 static void ld_twa_adjqparam(device_t, int);
86
87 static int ld_twa_scsicmd(struct ld_twa_softc *,
88 struct twa_request *, struct buf *);
89
90 CFATTACH_DECL_NEW(ld_twa, sizeof(struct ld_twa_softc),
91 ld_twa_match, ld_twa_attach, ld_twa_detach, NULL);
92
93 static const struct twa_callbacks ld_twa_callbacks = {
94 ld_twa_adjqparam,
95 };
96
97 static int
ld_twa_match(device_t parent,cfdata_t match,void * aux)98 ld_twa_match(device_t parent, cfdata_t match, void *aux)
99 {
100
101 return (1);
102 }
103
104 static void
ld_twa_attach(device_t parent,device_t self,void * aux)105 ld_twa_attach(device_t parent, device_t self, void *aux)
106 {
107 struct twa_attach_args *twa_args = aux;
108 struct ld_twa_softc *sc = device_private(self);
109 struct ld_softc *ld = &sc->sc_ld;
110 struct twa_softc *twa = device_private(parent);
111
112 ld->sc_dv = self;
113
114 twa_register_callbacks(twa, twa_args->twaa_unit, &ld_twa_callbacks);
115
116 sc->sc_hwunit = twa_args->twaa_unit;
117 ld->sc_maxxfer = twa_get_maxxfer(twa_get_maxsegs());
118 ld->sc_secperunit = twa->sc_units[sc->sc_hwunit].td_size;
119 ld->sc_flags = LDF_ENABLED;
120 ld->sc_secsize = TWA_SECTOR_SIZE;
121 ld->sc_maxqueuecnt = twa->sc_units[sc->sc_hwunit].td_openings;
122 ld->sc_start = ld_twa_start;
123 ld->sc_dump = ld_twa_dump;
124 ld->sc_ioctl = ld_twa_ioctl;
125 ldattach(ld, BUFQ_DISK_DEFAULT_STRAT);
126 }
127
128 static int
ld_twa_detach(device_t self,int flags)129 ld_twa_detach(device_t self, int flags)
130 {
131 struct ld_twa_softc *sc = device_private(self);
132 struct ld_softc *ld = &sc->sc_ld;
133 int error;
134
135 if ((error = ldbegindetach(ld, flags)) != 0)
136 return (error);
137 ldenddetach(ld);
138
139 return (0);
140 }
141
142 static int
ld_twa_dobio(struct ld_twa_softc * sc,void * data,size_t datasize,daddr_t blkno,struct buf * bp)143 ld_twa_dobio(struct ld_twa_softc *sc, void *data, size_t datasize,
144 daddr_t blkno, struct buf *bp)
145 {
146 int rv;
147 struct twa_request *tr;
148 struct twa_softc *twa;
149
150 twa = device_private(device_parent(sc->sc_ld.sc_dv));
151
152 if ((tr = twa_get_request(twa, 0)) == NULL) {
153 return (EAGAIN);
154 }
155 if (bp->b_flags & B_READ) {
156 tr->tr_flags = TWA_CMD_DATA_OUT;
157 } else {
158 tr->tr_flags = TWA_CMD_DATA_IN;
159 }
160
161 tr->tr_data = data;
162 tr->tr_length = datasize;
163 tr->tr_cmd_pkt_type =
164 (TWA_CMD_PKT_TYPE_9K | TWA_CMD_PKT_TYPE_EXTERNAL);
165
166 tr->tr_command->cmd_hdr.header_desc.size_header = 128;
167
168 tr->tr_command->command.cmd_pkt_9k.command.opcode =
169 TWA_OP_EXECUTE_SCSI_COMMAND;
170 tr->tr_command->command.cmd_pkt_9k.unit =
171 sc->sc_hwunit;
172 tr->tr_command->command.cmd_pkt_9k.request_id =
173 tr->tr_request_id;
174 tr->tr_command->command.cmd_pkt_9k.status = 0;
175 tr->tr_command->command.cmd_pkt_9k.sgl_entries = 1;
176 tr->tr_command->command.cmd_pkt_9k.sgl_offset = 16;
177
178 /* offset from end of hdr = max cdb len */
179 ld_twa_scsicmd(sc, tr, bp);
180
181 tr->tr_callback = ld_twa_handler;
182 tr->tr_ld_sc = sc;
183
184 tr->bp = bp;
185
186 rv = twa_map_request(tr);
187
188 return (rv);
189 }
190
191 static int
ld_twa_start(struct ld_softc * ld,struct buf * bp)192 ld_twa_start(struct ld_softc *ld, struct buf *bp)
193 {
194
195 return (ld_twa_dobio((struct ld_twa_softc *)ld, bp->b_data,
196 bp->b_bcount, bp->b_rawblkno, bp));
197 }
198
199 static void
ld_twa_handler(struct twa_request * tr)200 ld_twa_handler(struct twa_request *tr)
201 {
202 uint8_t status;
203 struct buf *bp;
204 struct ld_twa_softc *sc;
205
206 bp = tr->bp;
207 sc = (struct ld_twa_softc *)tr->tr_ld_sc;
208
209 status = tr->tr_command->command.cmd_pkt_9k.status;
210
211 if (status != 0) {
212 bp->b_error = EIO;
213 bp->b_resid = bp->b_bcount;
214 } else {
215 bp->b_resid = 0;
216 bp->b_error = 0;
217 }
218 twa_release_request(tr);
219
220 lddone(&sc->sc_ld, bp);
221 }
222
223 static int
ld_twa_dump(struct ld_softc * ld,void * data,int blkno,int blkcnt)224 ld_twa_dump(struct ld_softc *ld, void *data, int blkno, int blkcnt)
225 {
226
227 #if 0
228 /* XXX Unsafe right now. */
229 return (ld_twa_dobio((struct ld_twa_softc *)ld, data,
230 blkcnt * ld->sc_secsize, blkno, NULL));
231 #else
232 return EIO;
233 #endif
234
235 }
236
237
238 static int
ld_twa_flush(struct ld_softc * ld,bool poll)239 ld_twa_flush(struct ld_softc *ld, bool poll)
240 {
241 int s, rv = 0;
242 struct twa_request *tr;
243 struct twa_softc *twa = device_private(device_parent(ld->sc_dv));
244 struct ld_twa_softc *sc = (void *)ld;
245 struct twa_command_generic *generic_cmd;
246
247 /* Get a request packet. */
248 tr = twa_get_request_wait(twa, 0);
249 KASSERT(tr != NULL);
250
251 tr->tr_cmd_pkt_type =
252 (TWA_CMD_PKT_TYPE_9K | TWA_CMD_PKT_TYPE_EXTERNAL);
253
254 tr->tr_callback = twa_request_wait_handler;
255 tr->tr_ld_sc = sc;
256
257 tr->tr_command->cmd_hdr.header_desc.size_header = 128;
258
259 generic_cmd = &(tr->tr_command->command.cmd_pkt_7k.generic);
260 generic_cmd->opcode = TWA_OP_FLUSH;
261 generic_cmd->size = 2;
262 generic_cmd->unit = sc->sc_hwunit;
263 generic_cmd->request_id = tr->tr_request_id;
264 generic_cmd->sgl_offset = 0;
265 generic_cmd->host_id = 0;
266 generic_cmd->status = 0;
267 generic_cmd->flags = 0;
268 generic_cmd->count = 0;
269 rv = twa_map_request(tr);
270 s = splbio();
271 while (tr->tr_status != TWA_CMD_COMPLETE)
272 if ((rv = tsleep(tr, PRIBIO, "twaflush", 60 * hz)) != 0)
273 break;
274 twa_release_request(tr);
275 splx(s);
276
277 return (rv);
278 }
279
280 static int
ld_twa_ioctl(struct ld_softc * ld,u_long cmd,void * addr,int32_t flag,bool poll)281 ld_twa_ioctl(struct ld_softc *ld, u_long cmd, void *addr, int32_t flag, bool poll)
282 {
283 int error;
284
285 switch (cmd) {
286 case DIOCCACHESYNC:
287 error = ld_twa_flush(ld, poll);
288 break;
289
290 default:
291 error = EPASSTHROUGH;
292 break;
293 }
294
295 return error;
296 }
297
298 static void
ld_twa_adjqparam(device_t self,int openings)299 ld_twa_adjqparam(device_t self, int openings)
300 {
301 struct ld_twa_softc *sc = device_private(self);
302 struct ld_softc *ld = &sc->sc_ld;
303
304 ldadjqparam(ld, openings);
305 }
306
307
308 static int
ld_twa_scsicmd(struct ld_twa_softc * sc,struct twa_request * tr,struct buf * bp)309 ld_twa_scsicmd(struct ld_twa_softc *sc,
310 struct twa_request *tr, struct buf *bp)
311 {
312 if (tr->tr_flags == TWA_CMD_DATA_IN) {
313 tr->tr_command->command.cmd_pkt_9k.cdb[0] = WRITE_16;
314 } else {
315 tr->tr_command->command.cmd_pkt_9k.cdb[0] = READ_16;
316 }
317 tr->tr_command->command.cmd_pkt_9k.cdb[1] =
318 (sc->sc_hwunit << 5); /* lun for CDB */
319
320 _lto8b(htole64(bp->b_rawblkno),
321 &tr->tr_command->command.cmd_pkt_9k.cdb[2]);
322 _lto4b(htole32((bp->b_bcount / TWA_SECTOR_SIZE)),
323 &tr->tr_command->command.cmd_pkt_9k.cdb[10]);
324
325 tr->tr_command->command.cmd_pkt_9k.cdb[14] = 0;
326 tr->tr_command->command.cmd_pkt_9k.cdb[15] = 0;
327
328 return (0);
329 }
330
331 MODULE(MODULE_CLASS_DRIVER, ld_twa, "ld,twa");
332
333 #ifdef _MODULE
334 /*
335 * XXX Don't allow ioconf.c to redefine the "struct cfdriver ld_cd"
336 * XXX it will be defined in the common-code module
337 */
338 #undef CFDRIVER_DECL
339 #define CFDRIVER_DECL(name, class, attr)
340 #include "ioconf.c"
341 #endif
342
343 static int
ld_twa_modcmd(modcmd_t cmd,void * opaque)344 ld_twa_modcmd(modcmd_t cmd, void *opaque)
345 {
346 #ifdef _MODULE
347 /*
348 * We ignore the cfdriver_vec[] that ioconf provides, since
349 * the cfdrivers are attached already.
350 */
351 static struct cfdriver * const no_cfdriver_vec[] = { NULL };
352 #endif
353 int error = 0;
354
355 #ifdef _MODULE
356 switch (cmd) {
357 case MODULE_CMD_INIT:
358 error = config_init_component(no_cfdriver_vec,
359 cfattach_ioconf_ld_twa, cfdata_ioconf_ld_twa);
360 break;
361 case MODULE_CMD_FINI:
362 error = config_fini_component(no_cfdriver_vec,
363 cfattach_ioconf_ld_twa, cfdata_ioconf_ld_twa);
364 break;
365 default:
366 error = ENOTTY;
367 break;
368 }
369 #endif
370
371 return error;
372 }
373