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/7.4/sys/dev/mfi/mfi_cam.c 204912 2010-03-09 13:41:33Z kib $");
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
49 #include <cam/cam.h>
50 #include <cam/cam_ccb.h>
51 #include <cam/cam_debug.h>
52 #include <cam/cam_sim.h>
53 #include <cam/cam_xpt_sim.h>
54 #include <cam/scsi/scsi_all.h>
55 #include <cam/scsi/scsi_message.h>
56
57 #include <sys/bus.h>
58 #include <sys/conf.h>
59 #include <machine/md_var.h>
60 #include <machine/bus.h>
61 #include <machine/resource.h>
62 #include <sys/rman.h>
63
64 #include <dev/mfi/mfireg.h>
65 #include <dev/mfi/mfi_ioctl.h>
66 #include <dev/mfi/mfivar.h>
67
68 struct mfip_softc {
69 device_t dev;
70 struct mfi_softc *mfi_sc;
71 struct cam_devq *devq;
72 struct cam_sim *sim;
73 struct cam_path *path;
74 };
75
76 static int mfip_probe(device_t);
77 static int mfip_attach(device_t);
78 static int mfip_detach(device_t);
79 static void mfip_cam_action(struct cam_sim *, union ccb *);
80 static void mfip_cam_poll(struct cam_sim *);
81 static struct mfi_command * mfip_start(void *);
82 static void mfip_done(struct mfi_command *cm);
83
84 static devclass_t mfip_devclass;
85 static device_method_t mfip_methods[] = {
86 DEVMETHOD(device_probe, mfip_probe),
87 DEVMETHOD(device_attach, mfip_attach),
88 DEVMETHOD(device_detach, mfip_detach),
89 {0, 0}
90 };
91 static driver_t mfip_driver = {
92 "mfip",
93 mfip_methods,
94 sizeof(struct mfip_softc)
95 };
96 DRIVER_MODULE(mfip, mfi, mfip_driver, mfip_devclass, 0, 0);
97 MODULE_DEPEND(mfip, cam, 1, 1, 1);
98 MODULE_DEPEND(mfip, mfi, 1, 1, 1);
99
100 #define ccb_mfip_ptr sim_priv.entries[0].ptr
101
102 static int
103 mfip_probe(device_t dev)
104 {
105
106 device_set_desc(dev, "SCSI Passthrough Bus");
107 return (0);
108 }
109
110 static int
111 mfip_attach(device_t dev)
112 {
113 struct mfip_softc *sc;
114 struct mfi_softc *mfisc;
115
116 sc = device_get_softc(dev);
117 if (sc == NULL)
118 return (EINVAL);
119
120 mfisc = device_get_softc(device_get_parent(dev));
121 sc->dev = dev;
122 sc->mfi_sc = mfisc;
123 mfisc->mfi_cam_start = mfip_start;
124
125 if ((sc->devq = cam_simq_alloc(MFI_SCSI_MAX_CMDS)) == NULL)
126 return (ENOMEM);
127
128 sc->sim = cam_sim_alloc(mfip_cam_action, mfip_cam_poll, "mfi", sc,
129 device_get_unit(dev), &mfisc->mfi_io_lock, 1,
130 MFI_SCSI_MAX_CMDS, sc->devq);
131 if (sc->sim == NULL) {
132 cam_simq_free(sc->devq);
133 device_printf(dev, "CAM SIM attach failed\n");
134 return (EINVAL);
135 }
136
137 mtx_lock(&mfisc->mfi_io_lock);
138 if (xpt_bus_register(sc->sim, dev, 0) != 0) {
139 device_printf(dev, "XPT bus registration failed\n");
140 cam_sim_free(sc->sim, FALSE);
141 cam_simq_free(sc->devq);
142 mtx_unlock(&mfisc->mfi_io_lock);
143 return (EINVAL);
144 }
145 mtx_unlock(&mfisc->mfi_io_lock);
146
147 return (0);
148 }
149
150 static int
151 mfip_detach(device_t dev)
152 {
153 struct mfip_softc *sc;
154
155 sc = device_get_softc(dev);
156 if (sc == NULL)
157 return (EINVAL);
158
159 if (sc->sim != NULL) {
160 mtx_lock(&sc->mfi_sc->mfi_io_lock);
161 xpt_bus_deregister(cam_sim_path(sc->sim));
162 cam_sim_free(sc->sim, FALSE);
163 mtx_unlock(&sc->mfi_sc->mfi_io_lock);
164 }
165
166 if (sc->devq != NULL)
167 cam_simq_free(sc->devq);
168
169 return (0);
170 }
171
172 static void
173 mfip_cam_action(struct cam_sim *sim, union ccb *ccb)
174 {
175 struct mfip_softc *sc = cam_sim_softc(sim);
176 struct mfi_softc *mfisc = sc->mfi_sc;
177
178 mtx_assert(&mfisc->mfi_io_lock, MA_OWNED);
179
180 switch (ccb->ccb_h.func_code) {
181 case XPT_PATH_INQ:
182 {
183 struct ccb_pathinq *cpi = &ccb->cpi;
184
185 cpi->version_num = 1;
186 cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE|PI_WIDE_16;
187 cpi->target_sprt = 0;
188 cpi->hba_misc = PIM_NOBUSRESET|PIM_SEQSCAN;
189 cpi->hba_eng_cnt = 0;
190 cpi->max_target = MFI_SCSI_MAX_TARGETS;
191 cpi->max_lun = MFI_SCSI_MAX_LUNS;
192 cpi->initiator_id = MFI_SCSI_INITIATOR_ID;
193 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
194 strncpy(cpi->hba_vid, "LSI", HBA_IDLEN);
195 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
196 cpi->unit_number = cam_sim_unit(sim);
197 cpi->bus_id = cam_sim_bus(sim);
198 cpi->base_transfer_speed = 150000;
199 cpi->transport = XPORT_SAS;
200 cpi->transport_version = 0;
201 cpi->protocol = PROTO_SCSI;
202 cpi->protocol_version = SCSI_REV_2;
203 cpi->ccb_h.status = CAM_REQ_CMP;
204 break;
205 }
206 case XPT_RESET_BUS:
207 ccb->ccb_h.status = CAM_REQ_CMP;
208 break;
209 case XPT_RESET_DEV:
210 ccb->ccb_h.status = CAM_REQ_CMP;
211 break;
212 case XPT_GET_TRAN_SETTINGS:
213 {
214 struct ccb_trans_settings_sas *sas =
215 &ccb->cts.xport_specific.sas;
216
217 ccb->cts.protocol = PROTO_SCSI;
218 ccb->cts.protocol_version = SCSI_REV_2;
219 ccb->cts.transport = XPORT_SAS;
220 ccb->cts.transport_version = 0;
221
222 sas->valid &= ~CTS_SAS_VALID_SPEED;
223 sas->bitrate = 150000;
224
225 ccb->ccb_h.status = CAM_REQ_CMP;
226 break;
227 }
228 case XPT_SET_TRAN_SETTINGS:
229 ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
230 break;
231 case XPT_SCSI_IO:
232 {
233 struct ccb_hdr *ccbh = &ccb->ccb_h;
234 struct ccb_scsiio *csio = &ccb->csio;
235
236 ccbh->status = CAM_REQ_INPROG;
237 if (csio->cdb_len > MFI_SCSI_MAX_CDB_LEN) {
238 ccbh->status = CAM_REQ_INVALID;
239 break;
240 }
241 if ((ccbh->flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
242 if (ccbh->flags & CAM_DATA_PHYS) {
243 ccbh->status = CAM_REQ_INVALID;
244 break;
245 }
246 if (ccbh->flags & CAM_SCATTER_VALID) {
247 ccbh->status = CAM_REQ_INVALID;
248 break;
249 }
250 }
251
252 ccbh->ccb_mfip_ptr = sc;
253 TAILQ_INSERT_TAIL(&mfisc->mfi_cam_ccbq, ccbh, sim_links.tqe);
254 mfi_startio(mfisc);
255 return;
256 }
257 default:
258 ccb->ccb_h.status = CAM_REQ_INVALID;
259 break;
260 }
261
262 xpt_done(ccb);
263 return;
264 }
265
266 static struct mfi_command *
267 mfip_start(void *data)
268 {
269 union ccb *ccb = data;
270 struct ccb_hdr *ccbh = &ccb->ccb_h;
271 struct ccb_scsiio *csio = &ccb->csio;
272 struct mfip_softc *sc;
273 struct mfi_pass_frame *pt;
274 struct mfi_command *cm;
275
276 sc = ccbh->ccb_mfip_ptr;
277
278 if ((cm = mfi_dequeue_free(sc->mfi_sc)) == NULL)
279 return (NULL);
280
281 pt = &cm->cm_frame->pass;
282 pt->header.cmd = MFI_CMD_PD_SCSI_IO;
283 pt->header.cmd_status = 0;
284 pt->header.scsi_status = 0;
285 pt->header.target_id = ccbh->target_id;
286 pt->header.lun_id = ccbh->target_lun;
287 pt->header.flags = 0;
288 pt->header.timeout = 0;
289 pt->header.data_len = csio->dxfer_len;
290 pt->header.sense_len = MFI_SENSE_LEN;
291 pt->header.cdb_len = csio->cdb_len;
292 pt->sense_addr_lo = cm->cm_sense_busaddr;
293 pt->sense_addr_hi = 0;
294 if (ccbh->flags & CAM_CDB_POINTER)
295 bcopy(csio->cdb_io.cdb_ptr, &pt->cdb[0], csio->cdb_len);
296 else
297 bcopy(csio->cdb_io.cdb_bytes, &pt->cdb[0], csio->cdb_len);
298 cm->cm_complete = mfip_done;
299 cm->cm_private = ccb;
300 cm->cm_sg = &pt->sgl;
301 cm->cm_total_frame_size = MFI_PASS_FRAME_SIZE;
302 cm->cm_data = csio->data_ptr;
303 cm->cm_len = csio->dxfer_len;
304 switch (ccbh->flags & CAM_DIR_MASK) {
305 case CAM_DIR_IN:
306 cm->cm_flags = MFI_CMD_DATAIN;
307 break;
308 case CAM_DIR_OUT:
309 cm->cm_flags = MFI_CMD_DATAOUT;
310 break;
311 case CAM_DIR_NONE:
312 default:
313 cm->cm_data = NULL;
314 cm->cm_len = 0;
315 cm->cm_flags = 0;
316 break;
317 }
318
319 TAILQ_REMOVE(&sc->mfi_sc->mfi_cam_ccbq, ccbh, sim_links.tqe);
320 return (cm);
321 }
322
323 static void
324 mfip_done(struct mfi_command *cm)
325 {
326 union ccb *ccb = cm->cm_private;
327 struct ccb_hdr *ccbh = &ccb->ccb_h;
328 struct ccb_scsiio *csio = &ccb->csio;
329 struct mfip_softc *sc;
330 struct mfi_pass_frame *pt;
331
332 sc = ccbh->ccb_mfip_ptr;
333 pt = &cm->cm_frame->pass;
334
335 switch (pt->header.cmd_status) {
336 case MFI_STAT_OK:
337 {
338 uint8_t command, device;
339
340 ccbh->status = CAM_REQ_CMP;
341 csio->scsi_status = pt->header.scsi_status;
342 if (ccbh->flags & CAM_CDB_POINTER)
343 command = ccb->csio.cdb_io.cdb_ptr[0];
344 else
345 command = ccb->csio.cdb_io.cdb_bytes[0];
346 if (command == INQUIRY) {
347 device = ccb->csio.data_ptr[0] & 0x1f;
348 if ((device == T_DIRECT) || (device == T_PROCESSOR))
349 csio->data_ptr[0] =
350 (device & 0xe0) | T_NODEVICE;
351 }
352 break;
353 }
354 case MFI_STAT_SCSI_DONE_WITH_ERROR:
355 {
356 int sense_len;
357
358 ccbh->status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID;
359 csio->scsi_status = pt->header.scsi_status;
360 sense_len = min(pt->header.sense_len, sizeof(struct scsi_sense_data));
361 bzero(&csio->sense_data, sizeof(struct scsi_sense_data));
362 bcopy(&cm->cm_sense->data[0], &csio->sense_data, sense_len);
363 break;
364 }
365 case MFI_STAT_DEVICE_NOT_FOUND:
366 ccbh->status = CAM_SEL_TIMEOUT;
367 break;
368 case MFI_STAT_SCSI_IO_FAILED:
369 ccbh->status = CAM_REQ_CMP_ERR;
370 csio->scsi_status = pt->header.scsi_status;
371 break;
372 default:
373 ccbh->status = CAM_REQ_CMP_ERR;
374 csio->scsi_status = pt->header.scsi_status;
375 break;
376 }
377
378 mfi_release_command(cm);
379 xpt_done(ccb);
380 }
381
382 static void
383 mfip_cam_poll(struct cam_sim *sim)
384 {
385 return;
386 }
387
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