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/6.4/sys/dev/mfi/mfi_cam.c 170346 2007-06-05 21:27:22Z 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), 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 if (xpt_bus_register(sc->sim, 0) != 0) {
137 device_printf(dev, "XPT bus registration failed\n");
138 cam_sim_free(sc->sim, FALSE);
139 cam_simq_free(sc->devq);
140 return (EINVAL);
141 }
142
143 return (0);
144 }
145
146 static int
147 mfip_detach(device_t dev)
148 {
149 struct mfip_softc *sc;
150
151 sc = device_get_softc(dev);
152 if (sc == NULL)
153 return (EINVAL);
154
155 if (sc->sim != NULL) {
156 xpt_bus_deregister(cam_sim_path(sc->sim));
157 cam_sim_free(sc->sim, FALSE);
158 }
159
160 if (sc->devq != NULL)
161 cam_simq_free(sc->devq);
162
163 return (0);
164 }
165
166 static void
167 mfip_cam_action(struct cam_sim *sim, union ccb *ccb)
168 {
169 struct mfip_softc *sc = cam_sim_softc(sim);
170 struct mfi_softc *mfisc = sc->mfi_sc;
171
172 switch (ccb->ccb_h.func_code) {
173 case XPT_PATH_INQ:
174 {
175 struct ccb_pathinq *cpi = &ccb->cpi;
176
177 cpi->version_num = 1;
178 cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE|PI_WIDE_16;
179 cpi->target_sprt = 0;
180 cpi->hba_misc = PIM_NOBUSRESET;
181 cpi->hba_eng_cnt = 0;
182 cpi->max_target = MFI_SCSI_MAX_TARGETS;
183 cpi->max_lun = MFI_SCSI_MAX_LUNS;
184 cpi->initiator_id = MFI_SCSI_INITIATOR_ID;
185 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
186 strncpy(cpi->hba_vid, "LSI", HBA_IDLEN);
187 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
188 cpi->unit_number = cam_sim_unit(sim);
189 cpi->bus_id = cam_sim_bus(sim);
190 cpi->base_transfer_speed = 150000;
191 cpi->ccb_h.status = CAM_REQ_CMP;
192 break;
193 }
194 case XPT_RESET_BUS:
195 ccb->ccb_h.status = CAM_REQ_CMP;
196 break;
197 case XPT_RESET_DEV:
198 ccb->ccb_h.status = CAM_REQ_CMP;
199 break;
200 case XPT_GET_TRAN_SETTINGS:
201 {
202 ccb->cts.flags &= ~(CCB_TRANS_DISC_ENB | CCB_TRANS_TAG_ENB);
203 ccb->cts.valid = CCB_TRANS_DISC_VALID | CCB_TRANS_TQ_VALID;
204 ccb->ccb_h.status = CAM_REQ_CMP;
205 break;
206 }
207 case XPT_SET_TRAN_SETTINGS:
208 ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
209 break;
210 case XPT_SCSI_IO:
211 {
212 struct ccb_hdr *ccbh = &ccb->ccb_h;
213 struct ccb_scsiio *csio = &ccb->csio;
214
215 ccbh->status = CAM_REQ_INPROG;
216 if (csio->cdb_len > MFI_SCSI_MAX_CDB_LEN) {
217 ccbh->status = CAM_REQ_INVALID;
218 break;
219 }
220 if ((ccbh->flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
221 if (ccbh->flags & CAM_DATA_PHYS) {
222 ccbh->status = CAM_REQ_INVALID;
223 break;
224 }
225 if (ccbh->flags & CAM_SCATTER_VALID) {
226 ccbh->status = CAM_REQ_INVALID;
227 break;
228 }
229 }
230
231 ccbh->ccb_mfip_ptr = sc;
232 TAILQ_INSERT_TAIL(&mfisc->mfi_cam_ccbq, ccbh, sim_links.tqe);
233 mfi_startio(mfisc);
234 return;
235 }
236 default:
237 ccb->ccb_h.status = CAM_REQ_INVALID;
238 break;
239 }
240
241 xpt_done(ccb);
242 return;
243 }
244
245 static struct mfi_command *
246 mfip_start(void *data)
247 {
248 union ccb *ccb = data;
249 struct ccb_hdr *ccbh = &ccb->ccb_h;
250 struct ccb_scsiio *csio = &ccb->csio;
251 struct mfip_softc *sc;
252 struct mfi_pass_frame *pt;
253 struct mfi_command *cm;
254
255 sc = ccbh->ccb_mfip_ptr;
256
257 if ((cm = mfi_dequeue_free(sc->mfi_sc)) == NULL)
258 return (NULL);
259
260 pt = &cm->cm_frame->pass;
261 pt->header.cmd = MFI_CMD_PD_SCSI_IO;
262 pt->header.cmd_status = 0;
263 pt->header.scsi_status = 0;
264 pt->header.target_id = ccbh->target_id;
265 pt->header.lun_id = ccbh->target_lun;
266 pt->header.flags = 0;
267 pt->header.timeout = 0;
268 pt->header.data_len = csio->dxfer_len;
269 pt->header.sense_len = MFI_SENSE_LEN;
270 pt->header.cdb_len = csio->cdb_len;
271 pt->sense_addr_lo = cm->cm_sense_busaddr;
272 pt->sense_addr_hi = 0;
273 if (ccbh->flags & CAM_CDB_POINTER)
274 bcopy(csio->cdb_io.cdb_ptr, &pt->cdb[0], csio->cdb_len);
275 else
276 bcopy(csio->cdb_io.cdb_bytes, &pt->cdb[0], csio->cdb_len);
277 cm->cm_complete = mfip_done;
278 cm->cm_private = ccb;
279 cm->cm_sg = &pt->sgl;
280 cm->cm_total_frame_size = MFI_PASS_FRAME_SIZE;
281 cm->cm_data = csio->data_ptr;
282 cm->cm_len = csio->dxfer_len;
283 switch (ccbh->flags & CAM_DIR_MASK) {
284 case CAM_DIR_IN:
285 cm->cm_flags = MFI_CMD_DATAIN;
286 break;
287 case CAM_DIR_OUT:
288 cm->cm_flags = MFI_CMD_DATAOUT;
289 break;
290 case CAM_DIR_NONE:
291 default:
292 cm->cm_data = NULL;
293 cm->cm_len = 0;
294 cm->cm_flags = 0;
295 break;
296 }
297
298 TAILQ_REMOVE(&sc->mfi_sc->mfi_cam_ccbq, ccbh, sim_links.tqe);
299 return (cm);
300 }
301
302 static void
303 mfip_done(struct mfi_command *cm)
304 {
305 union ccb *ccb = cm->cm_private;
306 struct ccb_hdr *ccbh = &ccb->ccb_h;
307 struct ccb_scsiio *csio = &ccb->csio;
308 struct mfip_softc *sc;
309 struct mfi_pass_frame *pt;
310
311 sc = ccbh->ccb_mfip_ptr;
312 pt = &cm->cm_frame->pass;
313
314 switch (pt->header.cmd_status) {
315 case MFI_STAT_OK:
316 {
317 uint8_t command, device;
318
319 ccbh->status = CAM_REQ_CMP;
320 csio->scsi_status = pt->header.scsi_status;
321 if (ccbh->flags & CAM_CDB_POINTER)
322 command = ccb->csio.cdb_io.cdb_ptr[0];
323 else
324 command = ccb->csio.cdb_io.cdb_bytes[0];
325 if (command == INQUIRY) {
326 device = ccb->csio.data_ptr[0] & 0x1f;
327 if ((device == T_DIRECT) || (device == T_PROCESSOR))
328 csio->data_ptr[0] =
329 (device & 0xe0) | T_NODEVICE;
330 }
331 break;
332 }
333 case MFI_STAT_SCSI_DONE_WITH_ERROR:
334 {
335 int sense_len;
336
337 ccbh->status = CAM_REQ_CMP_ERR | CAM_AUTOSNS_VALID;
338 csio->scsi_status = pt->header.scsi_status;
339 sense_len = min(pt->header.sense_len, sizeof(struct scsi_sense_data));
340 bzero(&csio->sense_data, sizeof(struct scsi_sense_data));
341 bcopy(&cm->cm_sense->data[0], &csio->sense_data, sense_len);
342 break;
343 }
344 case MFI_STAT_DEVICE_NOT_FOUND:
345 ccbh->status = CAM_DEV_NOT_THERE;
346 break;
347 case MFI_STAT_SCSI_IO_FAILED:
348 ccbh->status = CAM_REQ_CMP_ERR;
349 csio->scsi_status = pt->header.scsi_status;
350 break;
351 default:
352 ccbh->status = CAM_REQ_CMP_ERR;
353 csio->scsi_status = pt->header.scsi_status;
354 break;
355 }
356
357 mfi_release_command(cm);
358 xpt_done(ccb);
359 }
360
361 static void
362 mfip_cam_poll(struct cam_sim *sim)
363 {
364 return;
365 }
366
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