mfi_cam.c revision 234429 
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: stable/9/sys/dev/mfi/mfi_cam.c 234429 2012-04-18 18:31:11Z ambrisko $");
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 <machine/md_var.h>
59#include <machine/bus.h>
60#include <machine/resource.h>
61
62#include <dev/mfi/mfireg.h>
63#include <dev/mfi/mfi_ioctl.h>
64#include <dev/mfi/mfivar.h>
65
66struct mfip_softc {
67	device_t	dev;
68	struct mfi_softc *mfi_sc;
69	struct cam_devq *devq;
70	struct cam_sim	*sim;
71	struct cam_path	*path;
72};
73
74static int	mfip_probe(device_t);
75static int	mfip_attach(device_t);
76static int	mfip_detach(device_t);
77static void	mfip_cam_action(struct cam_sim *, union ccb *);
78static void	mfip_cam_poll(struct cam_sim *);
79static struct mfi_command * mfip_start(void *);
80static void	mfip_done(struct mfi_command *cm);
81
82static devclass_t	mfip_devclass;
83static device_method_t	mfip_methods[] = {
84	DEVMETHOD(device_probe,		mfip_probe),
85	DEVMETHOD(device_attach,	mfip_attach),
86	DEVMETHOD(device_detach,	mfip_detach),
87	{0, 0}
88};
89static driver_t mfip_driver = {
90	"mfip",
91	mfip_methods,
92	sizeof(struct mfip_softc)
93};
94DRIVER_MODULE(mfip, mfi, mfip_driver, mfip_devclass, 0, 0);
95MODULE_DEPEND(mfip, cam, 1, 1, 1);
96MODULE_DEPEND(mfip, mfi, 1, 1, 1);
97
98#define ccb_mfip_ptr sim_priv.entries[0].ptr
99
100static int
101mfip_probe(device_t dev)
102{
103
104	device_set_desc(dev, "SCSI Passthrough Bus");
105	return (0);
106}
107
108static int
109mfip_attach(device_t dev)
110{
111	struct mfip_softc *sc;
112	struct mfi_softc *mfisc;
113
114	sc = device_get_softc(dev);
115	if (sc == NULL)
116		return (EINVAL);
117
118	mfisc = device_get_softc(device_get_parent(dev));
119	sc->dev = dev;
120	sc->mfi_sc = mfisc;
121	mfisc->mfi_cam_start = mfip_start;
122
123	if ((sc->devq = cam_simq_alloc(MFI_SCSI_MAX_CMDS)) == NULL)
124		return (ENOMEM);
125
126	sc->sim = cam_sim_alloc(mfip_cam_action, mfip_cam_poll, "mfi", sc,
127				device_get_unit(dev), &mfisc->mfi_io_lock, 1,
128				MFI_SCSI_MAX_CMDS, sc->devq);
129	if (sc->sim == NULL) {
130		cam_simq_free(sc->devq);
131		device_printf(dev, "CAM SIM attach failed\n");
132		return (EINVAL);
133	}
134
135	mtx_lock(&mfisc->mfi_io_lock);
136	if (xpt_bus_register(sc->sim, dev, 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		mtx_unlock(&mfisc->mfi_io_lock);
141		return (EINVAL);
142	}
143	mtx_unlock(&mfisc->mfi_io_lock);
144
145	return (0);
146}
147
148static int
149mfip_detach(device_t dev)
150{
151	struct mfip_softc *sc;
152
153	sc = device_get_softc(dev);
154	if (sc == NULL)
155		return (EINVAL);
156
157	if (sc->sim != NULL) {
158		mtx_lock(&sc->mfi_sc->mfi_io_lock);
159		xpt_bus_deregister(cam_sim_path(sc->sim));
160		cam_sim_free(sc->sim, FALSE);
161		mtx_unlock(&sc->mfi_sc->mfi_io_lock);
162	}
163
164	if (sc->devq != NULL)
165		cam_simq_free(sc->devq);
166
167	return (0);
168}
169
170static void
171mfip_cam_action(struct cam_sim *sim, union ccb *ccb)
172{
173	struct mfip_softc *sc = cam_sim_softc(sim);
174	struct mfi_softc *mfisc = sc->mfi_sc;
175
176	mtx_assert(&mfisc->mfi_io_lock, MA_OWNED);
177
178	switch (ccb->ccb_h.func_code) {
179	case XPT_PATH_INQ:
180	{
181		struct ccb_pathinq *cpi = &ccb->cpi;
182
183		cpi->version_num = 1;
184		cpi->hba_inquiry = PI_SDTR_ABLE|PI_TAG_ABLE|PI_WIDE_16;
185		cpi->target_sprt = 0;
186		cpi->hba_misc = PIM_NOBUSRESET|PIM_SEQSCAN;
187		cpi->hba_eng_cnt = 0;
188		cpi->max_target = MFI_SCSI_MAX_TARGETS;
189		cpi->max_lun = MFI_SCSI_MAX_LUNS;
190		cpi->initiator_id = MFI_SCSI_INITIATOR_ID;
191		strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
192		strncpy(cpi->hba_vid, "LSI", HBA_IDLEN);
193		strncpy(cpi->dev_name, cam_sim_name(sim), DEV_IDLEN);
194		cpi->unit_number = cam_sim_unit(sim);
195		cpi->bus_id = cam_sim_bus(sim);
196		cpi->base_transfer_speed = 150000;
197		cpi->transport = XPORT_SAS;
198		cpi->transport_version = 0;
199		cpi->protocol = PROTO_SCSI;
200		cpi->protocol_version = SCSI_REV_2;
201		cpi->ccb_h.status = CAM_REQ_CMP;
202		break;
203	}
204	case XPT_RESET_BUS:
205		ccb->ccb_h.status = CAM_REQ_CMP;
206		break;
207	case XPT_RESET_DEV:
208		ccb->ccb_h.status = CAM_REQ_CMP;
209		break;
210	case XPT_GET_TRAN_SETTINGS:
211	{
212		struct ccb_trans_settings_sas *sas =
213		    &ccb->cts.xport_specific.sas;
214
215		ccb->cts.protocol = PROTO_SCSI;
216		ccb->cts.protocol_version = SCSI_REV_2;
217		ccb->cts.transport = XPORT_SAS;
218		ccb->cts.transport_version = 0;
219
220		sas->valid &= ~CTS_SAS_VALID_SPEED;
221		sas->bitrate = 150000;
222
223		ccb->ccb_h.status = CAM_REQ_CMP;
224		break;
225	}
226	case XPT_SET_TRAN_SETTINGS:
227		ccb->ccb_h.status = CAM_FUNC_NOTAVAIL;
228		break;
229	case XPT_SCSI_IO:
230	{
231		struct ccb_hdr		*ccbh = &ccb->ccb_h;
232		struct ccb_scsiio	*csio = &ccb->csio;
233
234		ccbh->status = CAM_REQ_INPROG;
235		if (csio->cdb_len > MFI_SCSI_MAX_CDB_LEN) {
236			ccbh->status = CAM_REQ_INVALID;
237			break;
238		}
239		if ((ccbh->flags & CAM_DIR_MASK) != CAM_DIR_NONE) {
240			if (ccbh->flags & CAM_DATA_PHYS) {
241				ccbh->status = CAM_REQ_INVALID;
242				break;
243			}
244			if (ccbh->flags & CAM_SCATTER_VALID) {
245				ccbh->status = CAM_REQ_INVALID;
246				break;
247			}
248		}
249
250		ccbh->ccb_mfip_ptr = sc;
251		TAILQ_INSERT_TAIL(&mfisc->mfi_cam_ccbq, ccbh, sim_links.tqe);
252		mfi_startio(mfisc);
253		return;
254	}
255	default:
256		ccb->ccb_h.status = CAM_REQ_INVALID;
257		break;
258	}
259
260	xpt_done(ccb);
261	return;
262}
263
264static struct mfi_command *
265mfip_start(void *data)
266{
267	union ccb *ccb = data;
268	struct ccb_hdr *ccbh = &ccb->ccb_h;
269	struct ccb_scsiio *csio = &ccb->csio;
270	struct mfip_softc *sc;
271	struct mfi_pass_frame *pt;
272	struct mfi_command *cm;
273	uint32_t context = 0;
274
275	sc = ccbh->ccb_mfip_ptr;
276
277	if ((cm = mfi_dequeue_free(sc->mfi_sc)) == NULL)
278		return (NULL);
279
280	/* Zero out the MFI frame */
281	context = cm->cm_frame->header.context;
282	bzero(cm->cm_frame, sizeof(union mfi_frame));
283	cm->cm_frame->header.context = context;
284
285	pt = &cm->cm_frame->pass;
286	pt->header.cmd = MFI_CMD_PD_SCSI_IO;
287	pt->header.cmd_status = 0;
288	pt->header.scsi_status = 0;
289	pt->header.target_id = ccbh->target_id;
290	pt->header.lun_id = ccbh->target_lun;
291	pt->header.flags = 0;
292	pt->header.timeout = 0;
293	pt->header.data_len = csio->dxfer_len;
294	pt->header.sense_len = MFI_SENSE_LEN;
295	pt->header.cdb_len = csio->cdb_len;
296	pt->sense_addr_lo = cm->cm_sense_busaddr;
297	pt->sense_addr_hi = 0;
298	if (ccbh->flags & CAM_CDB_POINTER)
299		bcopy(csio->cdb_io.cdb_ptr, &pt->cdb[0], csio->cdb_len);
300	else
301		bcopy(csio->cdb_io.cdb_bytes, &pt->cdb[0], csio->cdb_len);
302	cm->cm_complete = mfip_done;
303	cm->cm_private = ccb;
304	cm->cm_sg = &pt->sgl;
305	cm->cm_total_frame_size = MFI_PASS_FRAME_SIZE;
306	cm->cm_data = csio->data_ptr;
307	cm->cm_len = csio->dxfer_len;
308	switch (ccbh->flags & CAM_DIR_MASK) {
309	case CAM_DIR_IN:
310		cm->cm_flags = MFI_CMD_DATAIN;
311		break;
312	case CAM_DIR_OUT:
313		cm->cm_flags = MFI_CMD_DATAOUT;
314		break;
315	case CAM_DIR_NONE:
316	default:
317		cm->cm_data = NULL;
318		cm->cm_len = 0;
319		cm->cm_flags = 0;
320		break;
321	}
322
323	TAILQ_REMOVE(&sc->mfi_sc->mfi_cam_ccbq, ccbh, sim_links.tqe);
324	return (cm);
325}
326
327static void
328mfip_done(struct mfi_command *cm)
329{
330	union ccb *ccb = cm->cm_private;
331	struct ccb_hdr *ccbh = &ccb->ccb_h;
332	struct ccb_scsiio *csio = &ccb->csio;
333	struct mfip_softc *sc;
334	struct mfi_pass_frame *pt;
335
336	sc = ccbh->ccb_mfip_ptr;
337	pt = &cm->cm_frame->pass;
338
339	switch (pt->header.cmd_status) {
340	case MFI_STAT_OK:
341	{
342		uint8_t command, device;
343
344		ccbh->status = CAM_REQ_CMP;
345		csio->scsi_status = pt->header.scsi_status;
346		if (ccbh->flags & CAM_CDB_POINTER)
347			command = csio->cdb_io.cdb_ptr[0];
348		else
349			command = csio->cdb_io.cdb_bytes[0];
350		if (command == INQUIRY) {
351			device = csio->data_ptr[0] & 0x1f;
352			if ((device == T_DIRECT) || (device == T_PROCESSOR))
353				csio->data_ptr[0] =
354				     (csio->data_ptr[0] & 0xe0) | T_NODEVICE;
355		}
356		break;
357	}
358	case MFI_STAT_SCSI_DONE_WITH_ERROR:
359	{
360		int sense_len;
361
362		ccbh->status = CAM_SCSI_STATUS_ERROR | CAM_AUTOSNS_VALID;
363		csio->scsi_status = pt->header.scsi_status;
364		if (pt->header.sense_len < csio->sense_len)
365			csio->sense_resid = csio->sense_len -
366			    pt->header.sense_len;
367		else
368			csio->sense_resid = 0;
369		sense_len = min(pt->header.sense_len,
370		    sizeof(struct scsi_sense_data));
371		bzero(&csio->sense_data, sizeof(struct scsi_sense_data));
372		bcopy(&cm->cm_sense->data[0], &csio->sense_data, sense_len);
373		break;
374	}
375	case MFI_STAT_DEVICE_NOT_FOUND:
376		ccbh->status = CAM_SEL_TIMEOUT;
377		break;
378	case MFI_STAT_SCSI_IO_FAILED:
379		ccbh->status = CAM_REQ_CMP_ERR;
380		csio->scsi_status = pt->header.scsi_status;
381		break;
382	default:
383		ccbh->status = CAM_REQ_CMP_ERR;
384		csio->scsi_status = pt->header.scsi_status;
385		break;
386	}
387
388	mfi_release_command(cm);
389	xpt_done(ccb);
390}
391
392static void
393mfip_cam_poll(struct cam_sim *sim)
394{
395	return;
396}
397
398