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 * $FreeBSD: src/sys/dev/mfi/mfi_cam.c,v 1.7 2011/10/13 20:06:19 marius Exp $
27 * FreeBSD projects/head_mfi/ r232949
28 */
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/bus.h>
38 #include <sys/conf.h>
39 #include <sys/eventhandler.h>
40 #include <sys/rman.h>
41 #include <sys/bus_dma.h>
42 #include <sys/buf2.h>
43 #include <sys/uio.h>
44 #include <sys/proc.h>
45 #include <sys/signalvar.h>
46
47 #include <bus/cam/cam.h>
48 #include <bus/cam/cam_ccb.h>
49 #include <bus/cam/cam_debug.h>
50 #include <bus/cam/cam_sim.h>
51 #include <bus/cam/cam_xpt_sim.h>
52 #include <bus/cam/scsi/scsi_all.h>
53 #include <bus/cam/scsi/scsi_message.h>
54
55 #include <machine/md_var.h>
56
57 #include <dev/raid/mfi/mfireg.h>
58 #include <dev/raid/mfi/mfi_ioctl.h>
59 #include <dev/raid/mfi/mfivar.h>
60
61 struct mfip_softc {
62 device_t dev;
63 struct mfi_softc *mfi_sc;
64 struct cam_devq *devq;
65 struct cam_sim *sim;
66 struct cam_path *path;
67 };
68
69 static int mfip_probe(device_t);
70 static int mfip_attach(device_t);
71 static int mfip_detach(device_t);
72 static void mfip_cam_action(struct cam_sim *, union ccb *);
73 static void mfip_cam_poll(struct cam_sim *);
74 static struct mfi_command * mfip_start(void *);
75 static void mfip_done(struct mfi_command *cm);
76
77 static devclass_t mfip_devclass;
78 static device_method_t mfip_methods[] = {
79 DEVMETHOD(device_probe, mfip_probe),
80 DEVMETHOD(device_attach, mfip_attach),
81 DEVMETHOD(device_detach, mfip_detach),
82 DEVMETHOD_END
83 };
84 static driver_t mfip_driver = {
85 "mfip",
86 mfip_methods,
87 sizeof(struct mfip_softc)
88 };
89 DRIVER_MODULE(mfip, mfi, mfip_driver, mfip_devclass, NULL, NULL);
90 MODULE_DEPEND(mfip, cam, 1, 1, 1);
91 MODULE_DEPEND(mfip, mfi, 1, 1, 1);
92
93 #define ccb_mfip_ptr sim_priv.entries[0].ptr
94
95 static int
mfip_probe(device_t dev)96 mfip_probe(device_t dev)
97 {
98
99 device_set_desc(dev, "SCSI Passthrough Bus");
100 return (0);
101 }
102
103 static int
mfip_attach(device_t dev)104 mfip_attach(device_t dev)
105 {
106 struct mfip_softc *sc;
107 struct mfi_softc *mfisc;
108
109 sc = device_get_softc(dev);
110 if (sc == NULL)
111 return (EINVAL);
112
113 mfisc = device_get_softc(device_get_parent(dev));
114 sc->dev = dev;
115 sc->mfi_sc = mfisc;
116 mfisc->mfi_cam_start = mfip_start;
117
118 if ((sc->devq = cam_simq_alloc(MFI_SCSI_MAX_CMDS)) == NULL)
119 return (ENOMEM);
120
121 sc->sim = cam_sim_alloc(mfip_cam_action, mfip_cam_poll, "mfi", sc,
122 device_get_unit(dev), &mfisc->mfi_io_lock, 1,
123 MFI_SCSI_MAX_CMDS, sc->devq);
124 cam_simq_release(sc->devq);
125 if (sc->sim == NULL) {
126 device_printf(dev, "CAM SIM attach failed\n");
127 return (EINVAL);
128 }
129
130 lockmgr(&mfisc->mfi_io_lock, LK_EXCLUSIVE);
131 if (xpt_bus_register(sc->sim, 0) != 0) {
132 device_printf(dev, "XPT bus registration failed\n");
133 cam_sim_free(sc->sim);
134 lockmgr(&mfisc->mfi_io_lock, LK_RELEASE);
135 return (EINVAL);
136 }
137 lockmgr(&mfisc->mfi_io_lock, LK_RELEASE);
138
139 return (0);
140 }
141
142 static int
mfip_detach(device_t dev)143 mfip_detach(device_t dev)
144 {
145 struct mfip_softc *sc;
146
147 sc = device_get_softc(dev);
148 if (sc == NULL)
149 return (EINVAL);
150
151 if (sc->sim != NULL) {
152 lockmgr(&sc->mfi_sc->mfi_io_lock, LK_EXCLUSIVE);
153 xpt_bus_deregister(cam_sim_path(sc->sim));
154 cam_sim_free(sc->sim);
155 lockmgr(&sc->mfi_sc->mfi_io_lock, LK_RELEASE);
156 }
157
158 return (0);
159 }
160
161 static void
mfip_cam_action(struct cam_sim * sim,union ccb * ccb)162 mfip_cam_action(struct cam_sim *sim, union ccb *ccb)
163 {
164 struct mfip_softc *sc = cam_sim_softc(sim);
165 struct mfi_softc *mfisc = sc->mfi_sc;
166
167 mfi_lockassert(&mfisc->mfi_io_lock);
168
169 switch (ccb->ccb_h.func_code) {
170 case XPT_PATH_INQ:
171 {
172 struct ccb_pathinq *cpi = &ccb->cpi;
173
174 cpi->version_num = 1;
175 cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE|PI_WIDE_16;
176 cpi->target_sprt = 0;
177 cpi->hba_misc = PIM_NOBUSRESET|PIM_SEQSCAN;
178 cpi->hba_eng_cnt = 0;
179 cpi->max_target = MFI_SCSI_MAX_TARGETS;
180 cpi->max_lun = MFI_SCSI_MAX_LUNS;
181 cpi->initiator_id = MFI_SCSI_INITIATOR_ID;
182 strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
183 strncpy(cpi->hba_vid, "LSI", HBA_IDLEN);
184 strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
185 cpi->unit_number = cam_sim_unit(sim);
186 cpi->bus_id = cam_sim_bus(sim);
187 cpi->base_transfer_speed = 150000;
188 cpi->transport = XPORT_SAS;
189 cpi->transport_version = 0;
190 cpi->protocol = PROTO_SCSI;
191 cpi->protocol_version = SCSI_REV_2;
192 cpi->ccb_h.status = CAM_REQ_CMP;
193 break;
194 }
195 case XPT_RESET_BUS:
196 ccb->ccb_h.status = CAM_REQ_CMP;
197 break;
198 case XPT_RESET_DEV:
199 ccb->ccb_h.status = CAM_REQ_CMP;
200 break;
201 case XPT_GET_TRAN_SETTINGS:
202 {
203 struct ccb_trans_settings_sas *sas =
204 &ccb->cts.xport_specific.sas;
205
206 ccb->cts.protocol = PROTO_SCSI;
207 ccb->cts.protocol_version = SCSI_REV_2;
208 ccb->cts.transport = XPORT_SAS;
209 ccb->cts.transport_version = 0;
210
211 sas->valid &= ~CTS_SAS_VALID_SPEED;
212 sas->bitrate = 150000;
213
214 ccb->ccb_h.status = CAM_REQ_CMP;
215 break;
216 }
217 case XPT_SET_TRAN_SETTINGS:
218 ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
219 break;
220 case XPT_SCSI_IO:
221 {
222 struct ccb_hdr *ccbh = &ccb->ccb_h;
223 struct ccb_scsiio *csio = &ccb->csio;
224
225 ccbh->status = CAM_REQ_INPROG;
226 if (csio->cdb_len > MFI_SCSI_MAX_CDB_LEN) {
227 ccbh->status = CAM_REQ_INVALID;
228 break;
229 }
230 if ((ccbh->flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
231 if (ccbh->flags & CAM_DATA_PHYS) {
232 ccbh->status = CAM_REQ_INVALID;
233 break;
234 }
235 if (ccbh->flags & CAM_SCATTER_VALID) {
236 ccbh->status = CAM_REQ_INVALID;
237 break;
238 }
239 }
240
241 ccbh->ccb_mfip_ptr = sc;
242 TAILQ_INSERT_TAIL(&mfisc->mfi_cam_ccbq, ccbh, sim_links.tqe);
243 mfi_startio(mfisc);
244 return;
245 }
246 default:
247 ccb->ccb_h.status = CAM_REQ_INVALID;
248 break;
249 }
250
251 xpt_done(ccb);
252 return;
253 }
254
255 static struct mfi_command *
mfip_start(void * data)256 mfip_start(void *data)
257 {
258 union ccb *ccb = data;
259 struct ccb_hdr *ccbh = &ccb->ccb_h;
260 struct ccb_scsiio *csio = &ccb->csio;
261 struct mfip_softc *sc;
262 struct mfi_pass_frame *pt;
263 struct mfi_command *cm;
264 uint32_t context = 0;
265
266 sc = ccbh->ccb_mfip_ptr;
267
268 if ((cm = mfi_dequeue_free(sc->mfi_sc)) == NULL)
269 return (NULL);
270
271 /* Zero out the MFI frame */
272 context = cm->cm_frame->header.context;
273 bzero(cm->cm_frame, sizeof(union mfi_frame));
274 cm->cm_frame->header.context = context;
275
276 pt = &cm->cm_frame->pass;
277 pt->header.cmd = MFI_CMD_PD_SCSI_IO;
278 pt->header.cmd_status = 0;
279 pt->header.scsi_status = 0;
280 pt->header.target_id = ccbh->target_id;
281 pt->header.lun_id = ccbh->target_lun;
282 pt->header.flags = 0;
283 pt->header.timeout = 0;
284 pt->header.data_len = csio->dxfer_len;
285 pt->header.sense_len = MFI_SENSE_LEN;
286 pt->header.cdb_len = csio->cdb_len;
287 pt->sense_addr_lo = cm->cm_sense_busaddr;
288 pt->sense_addr_hi = 0;
289 if (ccbh->flags & CAM_CDB_POINTER)
290 bcopy(csio->cdb_io.cdb_ptr, &pt->cdb[0], csio->cdb_len);
291 else
292 bcopy(csio->cdb_io.cdb_bytes, &pt->cdb[0], csio->cdb_len);
293 cm->cm_complete = mfip_done;
294 cm->cm_private = ccb;
295 cm->cm_sg = &pt->sgl;
296 cm->cm_total_frame_size = MFI_PASS_FRAME_SIZE;
297 cm->cm_data = csio->data_ptr;
298 cm->cm_len = csio->dxfer_len;
299 switch (ccbh->flags & CAM_DIR_MASK) {
300 case CAM_DIR_IN:
301 cm->cm_flags = MFI_CMD_DATAIN;
302 break;
303 case CAM_DIR_OUT:
304 cm->cm_flags = MFI_CMD_DATAOUT;
305 break;
306 case CAM_DIR_NONE:
307 default:
308 cm->cm_data = NULL;
309 cm->cm_len = 0;
310 cm->cm_flags = 0;
311 break;
312 }
313
314 TAILQ_REMOVE(&sc->mfi_sc->mfi_cam_ccbq, ccbh, sim_links.tqe);
315 return (cm);
316 }
317
318 static void
mfip_done(struct mfi_command * cm)319 mfip_done(struct mfi_command *cm)
320 {
321 union ccb *ccb = cm->cm_private;
322 struct ccb_hdr *ccbh = &ccb->ccb_h;
323 struct ccb_scsiio *csio = &ccb->csio;
324 struct mfi_pass_frame *pt;
325
326 pt = &cm->cm_frame->pass;
327
328 switch (pt->header.cmd_status) {
329 case MFI_STAT_OK:
330 {
331 uint8_t command, device;
332
333 ccbh->status = CAM_REQ_CMP;
334 csio->scsi_status = pt->header.scsi_status;
335 if (ccbh->flags & CAM_CDB_POINTER)
336 command = csio->cdb_io.cdb_ptr[0];
337 else
338 command = csio->cdb_io.cdb_bytes[0];
339 if (command == INQUIRY) {
340 device = csio->data_ptr[0] & 0x1f;
341 if ((device == T_DIRECT) || (device == T_PROCESSOR))
342 csio->data_ptr[0] =
343 (csio->data_ptr[0] & 0xe0) | T_NODEVICE;
344 }
345 break;
346 }
347 case MFI_STAT_SCSI_DONE_WITH_ERROR:
348 {
349 int sense_len;
350
351 ccbh->status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID;
352 csio->scsi_status = pt->header.scsi_status;
353 if (pt->header.sense_len < csio->sense_len)
354 csio->sense_resid = csio->sense_len -
355 pt->header.sense_len;
356 else
357 csio->sense_resid = 0;
358 sense_len = min(pt->header.sense_len,
359 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
mfip_cam_poll(struct cam_sim * sim)382 mfip_cam_poll(struct cam_sim *sim)
383 {
384 return;
385 }
386