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/8.0/sys/dev/mfi/mfi_cam.c 172588 2007-10-12 16:52:55Z scottl $");
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
99 #define ccb_mfip_ptr sim_priv.entries[0].ptr
100
101 static int
102 mfip_probe(device_t dev)
103 {
104
105 device_set_desc(dev, "SCSI Passthrough Bus");
106 return (0);
107 }
108
109 static int
110 mfip_attach(device_t dev)
111 {
112 struct mfip_softc *sc;
113 struct mfi_softc *mfisc;
114
115 sc = device_get_softc(dev);
116 if (sc == NULL)
117 return (EINVAL);
118
119 mfisc = device_get_softc(device_get_parent(dev));
120 sc->dev = dev;
121 sc->mfi_sc = mfisc;
122 mfisc->mfi_cam_start = mfip_start;
123
124 if ((sc->devq = cam_simq_alloc(MFI_SCSI_MAX_CMDS)) == NULL)
125 return (ENOMEM);
126
127 sc->sim = cam_sim_alloc(mfip_cam_action, mfip_cam_poll, "mfi", sc,
128 device_get_unit(dev), &mfisc->mfi_io_lock, 1,
129 MFI_SCSI_MAX_CMDS, sc->devq);
130 if (sc->sim == NULL) {
131 cam_simq_free(sc->devq);
132 device_printf(dev, "CAM SIM attach failed\n");
133 return (EINVAL);
134 }
135
136 mtx_lock(&mfisc->mfi_io_lock);
137 if (xpt_bus_register(sc->sim, dev, 0) != 0) {
138 device_printf(dev, "XPT bus registration failed\n");
139 cam_sim_free(sc->sim, FALSE);
140 cam_simq_free(sc->devq);
141 mtx_unlock(&mfisc->mfi_io_lock);
142 return (EINVAL);
143 }
144 mtx_unlock(&mfisc->mfi_io_lock);
145
146 return (0);
147 }
148
149 static int
150 mfip_detach(device_t dev)
151 {
152 struct mfip_softc *sc;
153
154 sc = device_get_softc(dev);
155 if (sc == NULL)
156 return (EINVAL);
157
158 if (sc->sim != NULL) {
159 mtx_lock(&sc->mfi_sc->mfi_io_lock);
160 xpt_bus_deregister(cam_sim_path(sc->sim));
161 cam_sim_free(sc->sim, FALSE);
162 mtx_unlock(&sc->mfi_sc->mfi_io_lock);
163 }
164
165 if (sc->devq != NULL)
166 cam_simq_free(sc->devq);
167
168 return (0);
169 }
170
171 static void
172 mfip_cam_action(struct cam_sim *sim, union ccb *ccb)
173 {
174 struct mfip_softc *sc = cam_sim_softc(sim);
175 struct mfi_softc *mfisc = sc->mfi_sc;
176
177 mtx_assert(&mfisc->mfi_io_lock, MA_OWNED);
178
179 switch (ccb->ccb_h.func_code) {
180 case XPT_PATH_INQ:
181 {
182 struct ccb_pathinq *cpi = &ccb->cpi;
183
184 cpi->version_num = 1;
185 cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE|PI_WIDE_16;
186 cpi->target_sprt = 0;
187 cpi->hba_misc = PIM_NOBUSRESET|PIM_SEQSCAN;
188 cpi->hba_eng_cnt = 0;
189 cpi->max_target = MFI_SCSI_MAX_TARGETS;
190 cpi->max_lun = MFI_SCSI_MAX_LUNS;
191 cpi->initiator_id = MFI_SCSI_INITIATOR_ID;
192 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
193 strncpy(cpi->hba_vid, "LSI", HBA_IDLEN);
194 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
195 cpi->unit_number = cam_sim_unit(sim);
196 cpi->bus_id = cam_sim_bus(sim);
197 cpi->base_transfer_speed = 150000;
198 cpi->transport = XPORT_SAS;
199 cpi->transport_version = 0;
200 cpi->protocol = PROTO_SCSI;
201 cpi->protocol_version = SCSI_REV_2;
202 cpi->ccb_h.status = CAM_REQ_CMP;
203 break;
204 }
205 case XPT_RESET_BUS:
206 ccb->ccb_h.status = CAM_REQ_CMP;
207 break;
208 case XPT_RESET_DEV:
209 ccb->ccb_h.status = CAM_REQ_CMP;
210 break;
211 case XPT_GET_TRAN_SETTINGS:
212 {
213 struct ccb_trans_settings_sas *sas =
214 &ccb->cts.xport_specific.sas;
215
216 ccb->cts.protocol = PROTO_SCSI;
217 ccb->cts.protocol_version = SCSI_REV_2;
218 ccb->cts.transport = XPORT_SAS;
219 ccb->cts.transport_version = 0;
220
221 sas->valid &= ~CTS_SAS_VALID_SPEED;
222 sas->bitrate = 150000;
223
224 ccb->ccb_h.status = CAM_REQ_CMP;
225 break;
226 }
227 case XPT_SET_TRAN_SETTINGS:
228 ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
229 break;
230 case XPT_SCSI_IO:
231 {
232 struct ccb_hdr *ccbh = &ccb->ccb_h;
233 struct ccb_scsiio *csio = &ccb->csio;
234
235 ccbh->status = CAM_REQ_INPROG;
236 if (csio->cdb_len > MFI_SCSI_MAX_CDB_LEN) {
237 ccbh->status = CAM_REQ_INVALID;
238 break;
239 }
240 if ((ccbh->flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
241 if (ccbh->flags & CAM_DATA_PHYS) {
242 ccbh->status = CAM_REQ_INVALID;
243 break;
244 }
245 if (ccbh->flags & CAM_SCATTER_VALID) {
246 ccbh->status = CAM_REQ_INVALID;
247 break;
248 }
249 }
250
251 ccbh->ccb_mfip_ptr = sc;
252 TAILQ_INSERT_TAIL(&mfisc->mfi_cam_ccbq, ccbh, sim_links.tqe);
253 mfi_startio(mfisc);
254 return;
255 }
256 default:
257 ccb->ccb_h.status = CAM_REQ_INVALID;
258 break;
259 }
260
261 xpt_done(ccb);
262 return;
263 }
264
265 static struct mfi_command *
266 mfip_start(void *data)
267 {
268 union ccb *ccb = data;
269 struct ccb_hdr *ccbh = &ccb->ccb_h;
270 struct ccb_scsiio *csio = &ccb->csio;
271 struct mfip_softc *sc;
272 struct mfi_pass_frame *pt;
273 struct mfi_command *cm;
274
275 sc = ccbh->ccb_mfip_ptr;
276
277 if ((cm = mfi_dequeue_free(sc->mfi_sc)) == NULL)
278 return (NULL);
279
280 pt = &cm->cm_frame->pass;
281 pt->header.cmd = MFI_CMD_PD_SCSI_IO;
282 pt->header.cmd_status = 0;
283 pt->header.scsi_status = 0;
284 pt->header.target_id = ccbh->target_id;
285 pt->header.lun_id = ccbh->target_lun;
286 pt->header.flags = 0;
287 pt->header.timeout = 0;
288 pt->header.data_len = csio->dxfer_len;
289 pt->header.sense_len = MFI_SENSE_LEN;
290 pt->header.cdb_len = csio->cdb_len;
291 pt->sense_addr_lo = cm->cm_sense_busaddr;
292 pt->sense_addr_hi = 0;
293 if (ccbh->flags & CAM_CDB_POINTER)
294 bcopy(csio->cdb_io.cdb_ptr, &pt->cdb[0], csio->cdb_len);
295 else
296 bcopy(csio->cdb_io.cdb_bytes, &pt->cdb[0], csio->cdb_len);
297 cm->cm_complete = mfip_done;
298 cm->cm_private = ccb;
299 cm->cm_sg = &pt->sgl;
300 cm->cm_total_frame_size = MFI_PASS_FRAME_SIZE;
301 cm->cm_data = csio->data_ptr;
302 cm->cm_len = csio->dxfer_len;
303 switch (ccbh->flags & CAM_DIR_MASK) {
304 case CAM_DIR_IN:
305 cm->cm_flags = MFI_CMD_DATAIN;
306 break;
307 case CAM_DIR_OUT:
308 cm->cm_flags = MFI_CMD_DATAOUT;
309 break;
310 case CAM_DIR_NONE:
311 default:
312 cm->cm_data = NULL;
313 cm->cm_len = 0;
314 cm->cm_flags = 0;
315 break;
316 }
317
318 TAILQ_REMOVE(&sc->mfi_sc->mfi_cam_ccbq, ccbh, sim_links.tqe);
319 return (cm);
320 }
321
322 static void
323 mfip_done(struct mfi_command *cm)
324 {
325 union ccb *ccb = cm->cm_private;
326 struct ccb_hdr *ccbh = &ccb->ccb_h;
327 struct ccb_scsiio *csio = &ccb->csio;
328 struct mfip_softc *sc;
329 struct mfi_pass_frame *pt;
330
331 sc = ccbh->ccb_mfip_ptr;
332 pt = &cm->cm_frame->pass;
333
334 switch (pt->header.cmd_status) {
335 case MFI_STAT_OK:
336 {
337 uint8_t command, device;
338
339 ccbh->status = CAM_REQ_CMP;
340 csio->scsi_status = pt->header.scsi_status;
341 if (ccbh->flags & CAM_CDB_POINTER)
342 command = ccb->csio.cdb_io.cdb_ptr[0];
343 else
344 command = ccb->csio.cdb_io.cdb_bytes[0];
345 if (command == INQUIRY) {
346 device = ccb->csio.data_ptr[0] & 0x1f;
347 if ((device == T_DIRECT) || (device == T_PROCESSOR))
348 csio->data_ptr[0] =
349 (device & 0xe0) | T_NODEVICE;
350 }
351 break;
352 }
353 case MFI_STAT_SCSI_DONE_WITH_ERROR:
354 {
355 int sense_len;
356
357 ccbh->status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID;
358 csio->scsi_status = pt->header.scsi_status;
359 sense_len = min(pt->header.sense_len, sizeof(struct scsi_sense_data));
360 bzero(&csio->sense_data, sizeof(struct scsi_sense_data));
361 bcopy(&cm->cm_sense->data[0], &csio->sense_data, sense_len);
362 break;
363 }
364 case MFI_STAT_DEVICE_NOT_FOUND:
365 ccbh->status = CAM_SEL_TIMEOUT;
366 break;
367 case MFI_STAT_SCSI_IO_FAILED:
368 ccbh->status = CAM_REQ_CMP_ERR;
369 csio->scsi_status = pt->header.scsi_status;
370 break;
371 default:
372 ccbh->status = CAM_REQ_CMP_ERR;
373 csio->scsi_status = pt->header.scsi_status;
374 break;
375 }
376
377 mfi_release_command(cm);
378 xpt_done(ccb);
379 }
380
381 static void
382 mfip_cam_poll(struct cam_sim *sim)
383 {
384 return;
385 }
386
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