FreeBSD/Linux Kernel Cross Reference
sys/dev/mfi/mfi_cam.c
1 /*-
2 * Copyright 2007 Scott Long
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27 #include <sys/cdefs.h>
28 __FBSDID("$FreeBSD: releng/8.3/sys/dev/mfi/mfi_cam.c 229612 2012-01-05 18:31:08Z jhb $");
29
30 #include "opt_mfi.h"
31
32 #include <sys/param.h>
33 #include <sys/systm.h>
34 #include <sys/kernel.h>
35 #include <sys/malloc.h>
36 #include <sys/module.h>
37 #include <sys/selinfo.h>
38 #include <sys/bus.h>
39 #include <sys/conf.h>
40 #include <sys/eventhandler.h>
41 #include <sys/rman.h>
42 #include <sys/bus_dma.h>
43 #include <sys/bio.h>
44 #include <sys/ioccom.h>
45 #include <sys/uio.h>
46 #include <sys/proc.h>
47 #include <sys/signalvar.h>
48 #include <sys/sysctl.h>
49
50 #include <cam/cam.h>
51 #include <cam/cam_ccb.h>
52 #include <cam/cam_debug.h>
53 #include <cam/cam_sim.h>
54 #include <cam/cam_xpt_sim.h>
55 #include <cam/scsi/scsi_all.h>
56 #include <cam/scsi/scsi_message.h>
57
58 #include <sys/bus.h>
59 #include <sys/conf.h>
60 #include <machine/md_var.h>
61 #include <machine/bus.h>
62 #include <machine/resource.h>
63 #include <sys/rman.h>
64
65 #include <dev/mfi/mfireg.h>
66 #include <dev/mfi/mfi_ioctl.h>
67 #include <dev/mfi/mfivar.h>
68
69 struct mfip_softc {
70 device_t dev;
71 struct mfi_softc *mfi_sc;
72 struct cam_devq *devq;
73 struct cam_sim *sim;
74 struct cam_path *path;
75 };
76
77 static int mfip_probe(device_t);
78 static int mfip_attach(device_t);
79 static int mfip_detach(device_t);
80 static void mfip_cam_action(struct cam_sim *, union ccb *);
81 static void mfip_cam_poll(struct cam_sim *);
82 static struct mfi_command * mfip_start(void *);
83 static void mfip_done(struct mfi_command *cm);
84
85 static devclass_t mfip_devclass;
86 static device_method_t mfip_methods[] = {
87 DEVMETHOD(device_probe, mfip_probe),
88 DEVMETHOD(device_attach, mfip_attach),
89 DEVMETHOD(device_detach, mfip_detach),
90 {0, 0}
91 };
92 static driver_t mfip_driver = {
93 "mfip",
94 mfip_methods,
95 sizeof(struct mfip_softc)
96 };
97 DRIVER_MODULE(mfip, mfi, mfip_driver, mfip_devclass, 0, 0);
98 MODULE_DEPEND(mfip, cam, 1, 1, 1);
99 MODULE_DEPEND(mfip, mfi, 1, 1, 1);
100
101 #define ccb_mfip_ptr sim_priv.entries[0].ptr
102
103 static int
104 mfip_probe(device_t dev)
105 {
106
107 device_set_desc(dev, "SCSI Passthrough Bus");
108 return (0);
109 }
110
111 static int
112 mfip_attach(device_t dev)
113 {
114 struct mfip_softc *sc;
115 struct mfi_softc *mfisc;
116
117 sc = device_get_softc(dev);
118 if (sc == NULL)
119 return (EINVAL);
120
121 mfisc = device_get_softc(device_get_parent(dev));
122 sc->dev = dev;
123 sc->mfi_sc = mfisc;
124 mfisc->mfi_cam_start = mfip_start;
125
126 if ((sc->devq = cam_simq_alloc(MFI_SCSI_MAX_CMDS)) == NULL)
127 return (ENOMEM);
128
129 sc->sim = cam_sim_alloc(mfip_cam_action, mfip_cam_poll, "mfi", sc,
130 device_get_unit(dev), &mfisc->mfi_io_lock, 1,
131 MFI_SCSI_MAX_CMDS, sc->devq);
132 if (sc->sim == NULL) {
133 cam_simq_free(sc->devq);
134 device_printf(dev, "CAM SIM attach failed\n");
135 return (EINVAL);
136 }
137
138 mtx_lock(&mfisc->mfi_io_lock);
139 if (xpt_bus_register(sc->sim, dev, 0) != 0) {
140 device_printf(dev, "XPT bus registration failed\n");
141 cam_sim_free(sc->sim, FALSE);
142 cam_simq_free(sc->devq);
143 mtx_unlock(&mfisc->mfi_io_lock);
144 return (EINVAL);
145 }
146 mtx_unlock(&mfisc->mfi_io_lock);
147
148 return (0);
149 }
150
151 static int
152 mfip_detach(device_t dev)
153 {
154 struct mfip_softc *sc;
155
156 sc = device_get_softc(dev);
157 if (sc == NULL)
158 return (EINVAL);
159
160 if (sc->sim != NULL) {
161 mtx_lock(&sc->mfi_sc->mfi_io_lock);
162 xpt_bus_deregister(cam_sim_path(sc->sim));
163 cam_sim_free(sc->sim, FALSE);
164 mtx_unlock(&sc->mfi_sc->mfi_io_lock);
165 }
166
167 if (sc->devq != NULL)
168 cam_simq_free(sc->devq);
169
170 return (0);
171 }
172
173 static void
174 mfip_cam_action(struct cam_sim *sim, union ccb *ccb)
175 {
176 struct mfip_softc *sc = cam_sim_softc(sim);
177 struct mfi_softc *mfisc = sc->mfi_sc;
178
179 mtx_assert(&mfisc->mfi_io_lock, MA_OWNED);
180
181 switch (ccb->ccb_h.func_code) {
182 case XPT_PATH_INQ:
183 {
184 struct ccb_pathinq *cpi = &ccb->cpi;
185
186 cpi->version_num = 1;
187 cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE|PI_WIDE_16;
188 cpi->target_sprt = 0;
189 cpi->hba_misc = PIM_NOBUSRESET|PIM_SEQSCAN;
190 cpi->hba_eng_cnt = 0;
191 cpi->max_target = MFI_SCSI_MAX_TARGETS;
192 cpi->max_lun = MFI_SCSI_MAX_LUNS;
193 cpi->initiator_id = MFI_SCSI_INITIATOR_ID;
194 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
195 strncpy(cpi->hba_vid, "LSI", HBA_IDLEN);
196 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
197 cpi->unit_number = cam_sim_unit(sim);
198 cpi->bus_id = cam_sim_bus(sim);
199 cpi->base_transfer_speed = 150000;
200 cpi->transport = XPORT_SAS;
201 cpi->transport_version = 0;
202 cpi->protocol = PROTO_SCSI;
203 cpi->protocol_version = SCSI_REV_2;
204 cpi->ccb_h.status = CAM_REQ_CMP;
205 break;
206 }
207 case XPT_RESET_BUS:
208 ccb->ccb_h.status = CAM_REQ_CMP;
209 break;
210 case XPT_RESET_DEV:
211 ccb->ccb_h.status = CAM_REQ_CMP;
212 break;
213 case XPT_GET_TRAN_SETTINGS:
214 {
215 struct ccb_trans_settings_sas *sas =
216 &ccb->cts.xport_specific.sas;
217
218 ccb->cts.protocol = PROTO_SCSI;
219 ccb->cts.protocol_version = SCSI_REV_2;
220 ccb->cts.transport = XPORT_SAS;
221 ccb->cts.transport_version = 0;
222
223 sas->valid &= ~CTS_SAS_VALID_SPEED;
224 sas->bitrate = 150000;
225
226 ccb->ccb_h.status = CAM_REQ_CMP;
227 break;
228 }
229 case XPT_SET_TRAN_SETTINGS:
230 ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
231 break;
232 case XPT_SCSI_IO:
233 {
234 struct ccb_hdr *ccbh = &ccb->ccb_h;
235 struct ccb_scsiio *csio = &ccb->csio;
236
237 ccbh->status = CAM_REQ_INPROG;
238 if (csio->cdb_len > MFI_SCSI_MAX_CDB_LEN) {
239 ccbh->status = CAM_REQ_INVALID;
240 break;
241 }
242 if ((ccbh->flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
243 if (ccbh->flags & CAM_DATA_PHYS) {
244 ccbh->status = CAM_REQ_INVALID;
245 break;
246 }
247 if (ccbh->flags & CAM_SCATTER_VALID) {
248 ccbh->status = CAM_REQ_INVALID;
249 break;
250 }
251 }
252
253 ccbh->ccb_mfip_ptr = sc;
254 TAILQ_INSERT_TAIL(&mfisc->mfi_cam_ccbq, ccbh, sim_links.tqe);
255 mfi_startio(mfisc);
256 return;
257 }
258 default:
259 ccb->ccb_h.status = CAM_REQ_INVALID;
260 break;
261 }
262
263 xpt_done(ccb);
264 return;
265 }
266
267 static struct mfi_command *
268 mfip_start(void *data)
269 {
270 union ccb *ccb = data;
271 struct ccb_hdr *ccbh = &ccb->ccb_h;
272 struct ccb_scsiio *csio = &ccb->csio;
273 struct mfip_softc *sc;
274 struct mfi_pass_frame *pt;
275 struct mfi_command *cm;
276
277 sc = ccbh->ccb_mfip_ptr;
278
279 if ((cm = mfi_dequeue_free(sc->mfi_sc)) == NULL)
280 return (NULL);
281
282 pt = &cm->cm_frame->pass;
283 pt->header.cmd = MFI_CMD_PD_SCSI_IO;
284 pt->header.cmd_status = 0;
285 pt->header.scsi_status = 0;
286 pt->header.target_id = ccbh->target_id;
287 pt->header.lun_id = ccbh->target_lun;
288 pt->header.flags = 0;
289 pt->header.timeout = 0;
290 pt->header.data_len = csio->dxfer_len;
291 pt->header.sense_len = MFI_SENSE_LEN;
292 pt->header.cdb_len = csio->cdb_len;
293 pt->sense_addr_lo = cm->cm_sense_busaddr;
294 pt->sense_addr_hi = 0;
295 if (ccbh->flags & CAM_CDB_POINTER)
296 bcopy(csio->cdb_io.cdb_ptr, &pt->cdb[0], csio->cdb_len);
297 else
298 bcopy(csio->cdb_io.cdb_bytes, &pt->cdb[0], csio->cdb_len);
299 cm->cm_complete = mfip_done;
300 cm->cm_private = ccb;
301 cm->cm_sg = &pt->sgl;
302 cm->cm_total_frame_size = MFI_PASS_FRAME_SIZE;
303 cm->cm_data = csio->data_ptr;
304 cm->cm_len = csio->dxfer_len;
305 switch (ccbh->flags & CAM_DIR_MASK) {
306 case CAM_DIR_IN:
307 cm->cm_flags = MFI_CMD_DATAIN;
308 break;
309 case CAM_DIR_OUT:
310 cm->cm_flags = MFI_CMD_DATAOUT;
311 break;
312 case CAM_DIR_NONE:
313 default:
314 cm->cm_data = NULL;
315 cm->cm_len = 0;
316 cm->cm_flags = 0;
317 break;
318 }
319
320 TAILQ_REMOVE(&sc->mfi_sc->mfi_cam_ccbq, ccbh, sim_links.tqe);
321 return (cm);
322 }
323
324 static void
325 mfip_done(struct mfi_command *cm)
326 {
327 union ccb *ccb = cm->cm_private;
328 struct ccb_hdr *ccbh = &ccb->ccb_h;
329 struct ccb_scsiio *csio = &ccb->csio;
330 struct mfip_softc *sc;
331 struct mfi_pass_frame *pt;
332
333 sc = ccbh->ccb_mfip_ptr;
334 pt = &cm->cm_frame->pass;
335
336 switch (pt->header.cmd_status) {
337 case MFI_STAT_OK:
338 {
339 uint8_t command, device;
340
341 ccbh->status = CAM_REQ_CMP;
342 csio->scsi_status = pt->header.scsi_status;
343 if (ccbh->flags & CAM_CDB_POINTER)
344 command = csio->cdb_io.cdb_ptr[0];
345 else
346 command = csio->cdb_io.cdb_bytes[0];
347 if (command == INQUIRY) {
348 device = csio->data_ptr[0] & 0x1f;
349 if ((device == T_DIRECT) || (device == T_PROCESSOR))
350 csio->data_ptr[0] =
351 (csio->data_ptr[0] & 0xe0) | T_NODEVICE;
352 }
353 break;
354 }
355 case MFI_STAT_SCSI_DONE_WITH_ERROR:
356 {
357 int sense_len;
358
359 ccbh->status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID;
360 csio->scsi_status = pt->header.scsi_status;
361 if (pt->header.sense_len < csio->sense_len)
362 csio->sense_resid = csio->sense_len -
363 pt->header.sense_len;
364 else
365 csio->sense_resid = 0;
366 sense_len = min(pt->header.sense_len,
367 sizeof(struct scsi_sense_data));
368 bzero(&csio->sense_data, sizeof(struct scsi_sense_data));
369 bcopy(&cm->cm_sense->data[0], &csio->sense_data, sense_len);
370 break;
371 }
372 case MFI_STAT_DEVICE_NOT_FOUND:
373 ccbh->status = CAM_SEL_TIMEOUT;
374 break;
375 case MFI_STAT_SCSI_IO_FAILED:
376 ccbh->status = CAM_REQ_CMP_ERR;
377 csio->scsi_status = pt->header.scsi_status;
378 break;
379 default:
380 ccbh->status = CAM_REQ_CMP_ERR;
381 csio->scsi_status = pt->header.scsi_status;
382 break;
383 }
384
385 mfi_release_command(cm);
386 xpt_done(ccb);
387 }
388
389 static void
390 mfip_cam_poll(struct cam_sim *sim)
391 {
392 return;
393 }
394
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