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/*-
* Copyright (C) 2003
* Hidetoshi Shimokawa. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
*
* This product includes software developed by Hidetoshi Shimokawa.
*
* 4. Neither the name of the author nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD: release/9.1.0/sys/dev/firewire/sbp_targ.c 237825 2012-06-29 21:33:36Z ken $
*/
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/systm.h>
#include <sys/sysctl.h>
#include <sys/types.h>
#include <sys/conf.h>
#include <sys/malloc.h>
#include <sys/endian.h>
#if __FreeBSD_version < 500000
#include <sys/devicestat.h>
#endif
#include <sys/bus.h>
#include <machine/bus.h>
#include <dev/firewire/firewire.h>
#include <dev/firewire/firewirereg.h>
#include <dev/firewire/iec13213.h>
#include <dev/firewire/sbp.h>
#include <dev/firewire/fwmem.h>
#include <cam/cam.h>
#include <cam/cam_ccb.h>
#include <cam/cam_sim.h>
#include <cam/cam_xpt_sim.h>
#include <cam/cam_debug.h>
#include <cam/cam_periph.h>
#include <cam/scsi/scsi_all.h>
#define SBP_TARG_RECV_LEN 8
#define MAX_INITIATORS 8
#define MAX_LUN 63
#define MAX_LOGINS 63
#define MAX_NODES 63
/*
* management/command block agent registers
*
* BASE 0xffff f001 0000 management port
* BASE 0xffff f001 0020 command port for login id 0
* BASE 0xffff f001 0040 command port for login id 1
*
*/
#define SBP_TARG_MGM 0x10000 /* offset from 0xffff f000 000 */
#define SBP_TARG_BIND_HI 0xffff
#define SBP_TARG_BIND_LO(l) (0xf0000000 + SBP_TARG_MGM + 0x20 * ((l) + 1))
#define SBP_TARG_BIND_START (((u_int64_t)SBP_TARG_BIND_HI << 32) | \
SBP_TARG_BIND_LO(-1))
#define SBP_TARG_BIND_END (((u_int64_t)SBP_TARG_BIND_HI << 32) | \
SBP_TARG_BIND_LO(MAX_LOGINS))
#define SBP_TARG_LOGIN_ID(lo) (((lo) - SBP_TARG_BIND_LO(0))/0x20)
#define FETCH_MGM 0
#define FETCH_CMD 1
#define FETCH_POINTER 2
#define F_LINK_ACTIVE (1 << 0)
#define F_ATIO_STARVED (1 << 1)
#define F_LOGIN (1 << 2)
#define F_HOLD (1 << 3)
#define F_FREEZED (1 << 4)
MALLOC_DEFINE(M_SBP_TARG, "sbp_targ", "SBP-II/FireWire target mode");
static int debug = 0;
SYSCTL_INT(_debug, OID_AUTO, sbp_targ_debug, CTLFLAG_RW, &debug, 0,
"SBP target mode debug flag");
struct sbp_targ_login {
struct sbp_targ_lstate *lstate;
struct fw_device *fwdev;
struct sbp_login_res loginres;
uint16_t fifo_hi;
uint16_t last_hi;
uint32_t fifo_lo;
uint32_t last_lo;
STAILQ_HEAD(, orb_info) orbs;
STAILQ_ENTRY(sbp_targ_login) link;
uint16_t hold_sec;
uint16_t id;
uint8_t flags;
uint8_t spd;
struct callout hold_callout;
};
struct sbp_targ_lstate {
uint16_t lun;
struct sbp_targ_softc *sc;
struct cam_path *path;
struct ccb_hdr_slist accept_tios;
struct ccb_hdr_slist immed_notifies;
struct crom_chunk model;
uint32_t flags;
STAILQ_HEAD(, sbp_targ_login) logins;
};
struct sbp_targ_softc {
struct firewire_dev_comm fd;
struct cam_sim *sim;
struct cam_path *path;
struct fw_bind fwb;
int ndevs;
int flags;
struct crom_chunk unit;
struct sbp_targ_lstate *lstate[MAX_LUN];
struct sbp_targ_lstate *black_hole;
struct sbp_targ_login *logins[MAX_LOGINS];
struct mtx mtx;
};
#define SBP_LOCK(sc) mtx_lock(&(sc)->mtx)
#define SBP_UNLOCK(sc) mtx_unlock(&(sc)->mtx)
struct corb4 {
#if BYTE_ORDER == BIG_ENDIAN
uint32_t n:1,
rq_fmt:2,
:1,
dir:1,
spd:3,
max_payload:4,
page_table_present:1,
page_size:3,
data_size:16;
#else
uint32_t data_size:16,
page_size:3,
page_table_present:1,
max_payload:4,
spd:3,
dir:1,
:1,
rq_fmt:2,
n:1;
#endif
};
struct morb4 {
#if BYTE_ORDER == BIG_ENDIAN
uint32_t n:1,
rq_fmt:2,
:9,
fun:4,
id:16;
#else
uint32_t id:16,
fun:4,
:9,
rq_fmt:2,
n:1;
#endif
};
struct orb_info {
struct sbp_targ_softc *sc;
struct fw_device *fwdev;
struct sbp_targ_login *login;
union ccb *ccb;
struct ccb_accept_tio *atio;
uint8_t state;
#define ORBI_STATUS_NONE 0
#define ORBI_STATUS_FETCH 1
#define ORBI_STATUS_ATIO 2
#define ORBI_STATUS_CTIO 3
#define ORBI_STATUS_STATUS 4
#define ORBI_STATUS_POINTER 5
#define ORBI_STATUS_ABORTED 7
uint8_t refcount;
uint16_t orb_hi;
uint32_t orb_lo;
uint32_t data_hi;
uint32_t data_lo;
struct corb4 orb4;
STAILQ_ENTRY(orb_info) link;
uint32_t orb[8];
uint32_t *page_table;
struct sbp_status status;
};
static char *orb_fun_name[] = {
ORB_FUN_NAMES
};
static void sbp_targ_recv(struct fw_xfer *);
static void sbp_targ_fetch_orb(struct sbp_targ_softc *, struct fw_device *,
uint16_t, uint32_t, struct sbp_targ_login *, int);
static void sbp_targ_abort(struct sbp_targ_softc *, struct orb_info *);
static void
sbp_targ_identify(driver_t *driver, device_t parent)
{
BUS_ADD_CHILD(parent, 0, "sbp_targ", device_get_unit(parent));
}
static int
sbp_targ_probe(device_t dev)
{
device_t pa;
pa = device_get_parent(dev);
if(device_get_unit(dev) != device_get_unit(pa)){
return(ENXIO);
}
device_set_desc(dev, "SBP-2/SCSI over FireWire target mode");
return (0);
}
static void
sbp_targ_dealloc_login(struct sbp_targ_login *login)
{
struct orb_info *orbi, *next;
if (login == NULL) {
printf("%s: login = NULL\n", __func__);
return;
}
for (orbi = STAILQ_FIRST(&login->orbs); orbi != NULL; orbi = next) {
next = STAILQ_NEXT(orbi, link);
free(orbi, M_SBP_TARG);
}
callout_stop(&login->hold_callout);
STAILQ_REMOVE(&login->lstate->logins, login, sbp_targ_login, link);
login->lstate->sc->logins[login->id] = NULL;
free((void *)login, M_SBP_TARG);
}
static void
sbp_targ_hold_expire(void *arg)
{
struct sbp_targ_login *login;
login = (struct sbp_targ_login *)arg;
if (login->flags & F_HOLD) {
printf("%s: login_id=%d expired\n", __func__, login->id);
sbp_targ_dealloc_login(login);
} else {
printf("%s: login_id=%d not hold\n", __func__, login->id);
}
}
static void
sbp_targ_post_busreset(void *arg)
{
struct sbp_targ_softc *sc;
struct crom_src *src;
struct crom_chunk *root;
struct crom_chunk *unit;
struct sbp_targ_lstate *lstate;
struct sbp_targ_login *login;
int i;
sc = (struct sbp_targ_softc *)arg;
src = sc->fd.fc->crom_src;
root = sc->fd.fc->crom_root;
unit = &sc->unit;
if ((sc->flags & F_FREEZED) == 0) {
SBP_LOCK(sc);
sc->flags |= F_FREEZED;
xpt_freeze_simq(sc->sim, /*count*/1);
SBP_UNLOCK(sc);
} else {
printf("%s: already freezed\n", __func__);
}
bzero(unit, sizeof(struct crom_chunk));
crom_add_chunk(src, root, unit, CROM_UDIR);
crom_add_entry(unit, CSRKEY_SPEC, CSRVAL_ANSIT10);
crom_add_entry(unit, CSRKEY_VER, CSRVAL_T10SBP2);
crom_add_entry(unit, CSRKEY_COM_SPEC, CSRVAL_ANSIT10);
crom_add_entry(unit, CSRKEY_COM_SET, CSRVAL_SCSI);
crom_add_entry(unit, CROM_MGM, SBP_TARG_MGM >> 2);
crom_add_entry(unit, CSRKEY_UNIT_CH, (10<<8) | 8);
for (i = 0; i < MAX_LUN; i ++) {
lstate = sc->lstate[i];
if (lstate == NULL)
continue;
crom_add_entry(unit, CSRKEY_FIRM_VER, 1);
crom_add_entry(unit, CROM_LUN, i);
crom_add_entry(unit, CSRKEY_MODEL, 1);
crom_add_simple_text(src, unit, &lstate->model, "TargetMode");
}
/* Process for reconnection hold time */
for (i = 0; i < MAX_LOGINS; i ++) {
login = sc->logins[i];
if (login == NULL)
continue;
sbp_targ_abort(sc, STAILQ_FIRST(&login->orbs));
if (login->flags & F_LOGIN) {
login->flags |= F_HOLD;
callout_reset(&login->hold_callout,
hz * login->hold_sec,
sbp_targ_hold_expire, (void *)login);
}
}
}
static void
sbp_targ_post_explore(void *arg)
{
struct sbp_targ_softc *sc;
sc = (struct sbp_targ_softc *)arg;
SBP_LOCK(sc);
sc->flags &= ~F_FREEZED;
xpt_release_simq(sc->sim, /*run queue*/TRUE);
SBP_UNLOCK(sc);
return;
}
static cam_status
sbp_targ_find_devs(struct sbp_targ_softc *sc, union ccb *ccb,
struct sbp_targ_lstate **lstate, int notfound_failure)
{
u_int lun;
/* XXX 0 is the only vaild target_id */
if (ccb->ccb_h.target_id == CAM_TARGET_WILDCARD &&
ccb->ccb_h.target_lun == CAM_LUN_WILDCARD) {
*lstate = sc->black_hole;
return (CAM_REQ_CMP);
}
if (ccb->ccb_h.target_id != 0)
return (CAM_TID_INVALID);
lun = ccb->ccb_h.target_lun;
if (lun >= MAX_LUN)
return (CAM_LUN_INVALID);
*lstate = sc->lstate[lun];
if (notfound_failure != 0 && *lstate == NULL)
return (CAM_PATH_INVALID);
return (CAM_REQ_CMP);
}
static void
sbp_targ_en_lun(struct sbp_targ_softc *sc, union ccb *ccb)
{
struct ccb_en_lun *cel = &ccb->cel;
struct sbp_targ_lstate *lstate;
cam_status status;
status = sbp_targ_find_devs(sc, ccb, &lstate, 0);
if (status != CAM_REQ_CMP) {
ccb->ccb_h.status = status;
return;
}
if (cel->enable != 0) {
if (lstate != NULL) {
xpt_print_path(ccb->ccb_h.path);
printf("Lun already enabled\n");
ccb->ccb_h.status = CAM_LUN_ALRDY_ENA;
return;
}
if (cel->grp6_len != 0 || cel->grp7_len != 0) {
ccb->ccb_h.status = CAM_REQ_INVALID;
printf("Non-zero Group Codes\n");
return;
}
lstate = (struct sbp_targ_lstate *)
malloc(sizeof(*lstate), M_SBP_TARG, M_NOWAIT | M_ZERO);
if (lstate == NULL) {
xpt_print_path(ccb->ccb_h.path);
printf("Couldn't allocate lstate\n");
ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
return;
}
if (ccb->ccb_h.target_id == CAM_TARGET_WILDCARD)
sc->black_hole = lstate;
else
sc->lstate[ccb->ccb_h.target_lun] = lstate;
memset(lstate, 0, sizeof(*lstate));
lstate->sc = sc;
status = xpt_create_path(&lstate->path, /*periph*/NULL,
xpt_path_path_id(ccb->ccb_h.path),
xpt_path_target_id(ccb->ccb_h.path),
xpt_path_lun_id(ccb->ccb_h.path));
if (status != CAM_REQ_CMP) {
free(lstate, M_SBP_TARG);
xpt_print_path(ccb->ccb_h.path);
printf("Couldn't allocate path\n");
ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
return;
}
SLIST_INIT(&lstate->accept_tios);
SLIST_INIT(&lstate->immed_notifies);
STAILQ_INIT(&lstate->logins);
ccb->ccb_h.status = CAM_REQ_CMP;
xpt_print_path(ccb->ccb_h.path);
printf("Lun now enabled for target mode\n");
/* bus reset */
sc->fd.fc->ibr(sc->fd.fc);
} else {
struct sbp_targ_login *login, *next;
if (lstate == NULL) {
ccb->ccb_h.status = CAM_LUN_INVALID;
return;
}
ccb->ccb_h.status = CAM_REQ_CMP;
if (SLIST_FIRST(&lstate->accept_tios) != NULL) {
printf("ATIOs pending\n");
ccb->ccb_h.status = CAM_REQ_INVALID;
}
if (SLIST_FIRST(&lstate->immed_notifies) != NULL) {
printf("INOTs pending\n");
ccb->ccb_h.status = CAM_REQ_INVALID;
}
if (ccb->ccb_h.status != CAM_REQ_CMP) {
return;
}
xpt_print_path(ccb->ccb_h.path);
printf("Target mode disabled\n");
xpt_free_path(lstate->path);
for (login = STAILQ_FIRST(&lstate->logins); login != NULL;
login = next) {
next = STAILQ_NEXT(login, link);
sbp_targ_dealloc_login(login);
}
if (ccb->ccb_h.target_id == CAM_TARGET_WILDCARD)
sc->black_hole = NULL;
else
sc->lstate[ccb->ccb_h.target_lun] = NULL;
free(lstate, M_SBP_TARG);
/* bus reset */
sc->fd.fc->ibr(sc->fd.fc);
}
}
static void
sbp_targ_send_lstate_events(struct sbp_targ_softc *sc,
struct sbp_targ_lstate *lstate)
{
#if 0
struct ccb_hdr *ccbh;
struct ccb_immediate_notify *inot;
printf("%s: not implemented yet\n", __func__);
#endif
}
static __inline void
sbp_targ_remove_orb_info_locked(struct sbp_targ_login *login, struct orb_info *orbi)
{
STAILQ_REMOVE(&login->orbs, orbi, orb_info, link);
}
static __inline void
sbp_targ_remove_orb_info(struct sbp_targ_login *login, struct orb_info *orbi)
{
SBP_LOCK(orbi->sc);
STAILQ_REMOVE(&login->orbs, orbi, orb_info, link);
SBP_UNLOCK(orbi->sc);
}
/*
* tag_id/init_id encoding
*
* tag_id and init_id has only 32bit for each.
* scsi_target can handle very limited number(up to 15) of init_id.
* we have to encode 48bit orb and 64bit EUI64 into these
* variables.
*
* tag_id represents lower 32bit of ORB address.
* init_id represents login_id.
*
*/
static struct orb_info *
sbp_targ_get_orb_info(struct sbp_targ_lstate *lstate,
u_int tag_id, u_int init_id)
{
struct sbp_targ_login *login;
struct orb_info *orbi;
login = lstate->sc->logins[init_id];
if (login == NULL) {
printf("%s: no such login\n", __func__);
return (NULL);
}
STAILQ_FOREACH(orbi, &login->orbs, link)
if (orbi->orb_lo == tag_id)
goto found;
printf("%s: orb not found tag_id=0x%08x init_id=%d\n",
__func__, tag_id, init_id);
return (NULL);
found:
return (orbi);
}
static void
sbp_targ_abort(struct sbp_targ_softc *sc, struct orb_info *orbi)
{
struct orb_info *norbi;
SBP_LOCK(sc);
for (; orbi != NULL; orbi = norbi) {
printf("%s: status=%d ccb=%p\n", __func__, orbi->state, orbi->ccb);
norbi = STAILQ_NEXT(orbi, link);
if (orbi->state != ORBI_STATUS_ABORTED) {
if (orbi->ccb != NULL) {
orbi->ccb->ccb_h.status = CAM_REQ_ABORTED;
xpt_done(orbi->ccb);
orbi->ccb = NULL;
}
#if 0
if (orbi->state <= ORBI_STATUS_ATIO) {
sbp_targ_remove_orb_info_locked(orbi->login, orbi);
free(orbi, M_SBP_TARG);
} else
#endif
orbi->state = ORBI_STATUS_ABORTED;
}
}
SBP_UNLOCK(sc);
}
static void
sbp_targ_free_orbi(struct fw_xfer *xfer)
{
struct orb_info *orbi;
orbi = (struct orb_info *)xfer->sc;
if (xfer->resp != 0) {
/* XXX */
printf("%s: xfer->resp = %d\n", __func__, xfer->resp);
}
free(orbi, M_SBP_TARG);
fw_xfer_free(xfer);
}
static void
sbp_targ_status_FIFO(struct orb_info *orbi,
uint32_t fifo_hi, uint32_t fifo_lo, int dequeue)
{
struct fw_xfer *xfer;
if (dequeue)
sbp_targ_remove_orb_info(orbi->login, orbi);
xfer = fwmem_write_block(orbi->fwdev, (void *)orbi,
/*spd*/2, fifo_hi, fifo_lo,
sizeof(uint32_t) * (orbi->status.len + 1), (char *)&orbi->status,
sbp_targ_free_orbi);
if (xfer == NULL) {
/* XXX */
printf("%s: xfer == NULL\n", __func__);
}
}
static void
sbp_targ_send_status(struct orb_info *orbi, union ccb *ccb)
{
struct sbp_status *sbp_status;
#if 0
struct orb_info *norbi;
#endif
sbp_status = &orbi->status;
orbi->state = ORBI_STATUS_STATUS;
sbp_status->resp = 0; /* XXX */
sbp_status->status = 0; /* XXX */
sbp_status->dead = 0; /* XXX */
switch (ccb->csio.scsi_status) {
case SCSI_STATUS_OK:
if (debug)
printf("%s: STATUS_OK\n", __func__);
sbp_status->len = 1;
break;
case SCSI_STATUS_CHECK_COND:
case SCSI_STATUS_BUSY:
case SCSI_STATUS_CMD_TERMINATED:
{
struct sbp_cmd_status *sbp_cmd_status;
struct scsi_sense_data *sense;
int error_code, sense_key, asc, ascq;
uint8_t stream_bits;
uint8_t sks[3];
uint64_t info;
int64_t sinfo;
int sense_len;
if (debug)
printf("%s: STATUS %d\n", __func__,
ccb->csio.scsi_status);
sbp_cmd_status = (struct sbp_cmd_status *)&sbp_status->data[0];
sbp_cmd_status->status = ccb->csio.scsi_status;
sense = &ccb->csio.sense_data;
#if 0 /* XXX What we should do? */
#if 0
sbp_targ_abort(orbi->sc, STAILQ_NEXT(orbi, link));
#else
norbi = STAILQ_NEXT(orbi, link);
while (norbi) {
printf("%s: status=%d\n", __func__, norbi->state);
if (norbi->ccb != NULL) {
norbi->ccb->ccb_h.status = CAM_REQ_ABORTED;
xpt_done(norbi->ccb);
norbi->ccb = NULL;
}
sbp_targ_remove_orb_info_locked(orbi->login, norbi);
norbi = STAILQ_NEXT(norbi, link);
free(norbi, M_SBP_TARG);
}
#endif
#endif
sense_len = ccb->csio.sense_len - ccb->csio.sense_resid;
scsi_extract_sense_len(sense, sense_len, &error_code,
&sense_key, &asc, &ascq, /*show_errors*/ 0);
switch (error_code) {
case SSD_CURRENT_ERROR:
case SSD_DESC_CURRENT_ERROR:
sbp_cmd_status->sfmt = SBP_SFMT_CURR;
break;
default:
sbp_cmd_status->sfmt = SBP_SFMT_DEFER;
break;
}
if (scsi_get_sense_info(sense, sense_len, SSD_DESC_INFO, &info,
&sinfo) == 0) {
uint32_t info_trunc;
sbp_cmd_status->valid = 1;
info_trunc = info;
sbp_cmd_status->info = htobe32(info_trunc);
} else {
sbp_cmd_status->valid = 0;
}
sbp_cmd_status->s_key = sense_key;
if (scsi_get_stream_info(sense, sense_len, NULL,
&stream_bits) == 0) {
sbp_cmd_status->mark =
(stream_bits & SSD_FILEMARK) ? 1 : 0;
sbp_cmd_status->eom =
(stream_bits & SSD_EOM) ? 1 : 0;
sbp_cmd_status->ill_len =
(stream_bits & SSD_ILI) ? 1 : 0;
} else {
sbp_cmd_status->mark = 0;
sbp_cmd_status->eom = 0;
sbp_cmd_status->ill_len = 0;
}
/* add_sense_code(_qual), info, cmd_spec_info */
sbp_status->len = 4;
if (scsi_get_sense_info(sense, sense_len, SSD_DESC_COMMAND,
&info, &sinfo) == 0) {
uint32_t cmdspec_trunc;
cmdspec_trunc = info;
sbp_cmd_status->cdb = htobe32(cmdspec_trunc);
}
sbp_cmd_status->s_code = asc;
sbp_cmd_status->s_qlfr = ascq;
if (scsi_get_sense_info(sense, sense_len, SSD_DESC_FRU, &info,
&sinfo) == 0) {
sbp_cmd_status->fru = (uint8_t)info;
sbp_status->len = 5;
} else {
sbp_cmd_status->fru = 0;
}
if (scsi_get_sks(sense, sense_len, sks) == 0) {
bcopy(sks, &sbp_cmd_status->s_keydep[0], sizeof(sks));
sbp_status->len = 5;
}
break;
}
default:
printf("%s: unknown scsi status 0x%x\n", __func__,
sbp_status->status);
}
if (orbi->page_table != NULL)
free(orbi->page_table, M_SBP_TARG);
sbp_targ_status_FIFO(orbi,
orbi->login->fifo_hi, orbi->login->fifo_lo, /*dequeue*/1);
}
static void
sbp_targ_cam_done(struct fw_xfer *xfer)
{
struct orb_info *orbi;
union ccb *ccb;
orbi = (struct orb_info *)xfer->sc;
if (debug > 1)
printf("%s: resp=%d refcount=%d\n", __func__,
xfer->resp, orbi->refcount);
if (xfer->resp != 0) {
printf("%s: xfer->resp = %d\n", __func__, xfer->resp);
orbi->status.resp = SBP_TRANS_FAIL;
orbi->status.status = OBJ_DATA | SBE_TIMEOUT/*XXX*/;
orbi->status.dead = 1;
sbp_targ_abort(orbi->sc, STAILQ_NEXT(orbi, link));
}
orbi->refcount --;
ccb = orbi->ccb;
if (orbi->refcount == 0) {
orbi->ccb = NULL;
if (orbi->state == ORBI_STATUS_ABORTED) {
if (debug)
printf("%s: orbi aborted\n", __func__);
sbp_targ_remove_orb_info(orbi->login, orbi);
if (orbi->page_table != NULL)
free(orbi->page_table, M_SBP_TARG);
free(orbi, M_SBP_TARG);
} else if (orbi->status.resp == 0) {
if ((ccb->ccb_h.flags & CAM_SEND_STATUS) != 0)
sbp_targ_send_status(orbi, ccb);
ccb->ccb_h.status = CAM_REQ_CMP;
SBP_LOCK(orbi->sc);
xpt_done(ccb);
SBP_UNLOCK(orbi->sc);
} else {
orbi->status.len = 1;
sbp_targ_status_FIFO(orbi,
orbi->login->fifo_hi, orbi->login->fifo_lo,
/*dequeue*/1);
ccb->ccb_h.status = CAM_REQ_ABORTED;
SBP_LOCK(orbi->sc);
xpt_done(ccb);
SBP_UNLOCK(orbi->sc);
}
}
fw_xfer_free(xfer);
}
static cam_status
sbp_targ_abort_ccb(struct sbp_targ_softc *sc, union ccb *ccb)
{
union ccb *accb;
struct sbp_targ_lstate *lstate;
struct ccb_hdr_slist *list;
struct ccb_hdr *curelm;
int found;
cam_status status;
status = sbp_targ_find_devs(sc, ccb, &lstate, 0);
if (status != CAM_REQ_CMP)
return (status);
accb = ccb->cab.abort_ccb;
if (accb->ccb_h.func_code == XPT_ACCEPT_TARGET_IO)
list = &lstate->accept_tios;
else if (accb->ccb_h.func_code == XPT_IMMEDIATE_NOTIFY)
list = &lstate->immed_notifies;
else
return (CAM_UA_ABORT);
curelm = SLIST_FIRST(list);
found = 0;
if (curelm == &accb->ccb_h) {
found = 1;
SLIST_REMOVE_HEAD(list, sim_links.sle);
} else {
while(curelm != NULL) {
struct ccb_hdr *nextelm;
nextelm = SLIST_NEXT(curelm, sim_links.sle);
if (nextelm == &accb->ccb_h) {
found = 1;
SLIST_NEXT(curelm, sim_links.sle) =
SLIST_NEXT(nextelm, sim_links.sle);
break;
}
curelm = nextelm;
}
}
if (found) {
accb->ccb_h.status = CAM_REQ_ABORTED;
xpt_done(accb);
return (CAM_REQ_CMP);
}
printf("%s: not found\n", __func__);
return (CAM_PATH_INVALID);
}
static void
sbp_targ_xfer_buf(struct orb_info *orbi, u_int offset,
uint16_t dst_hi, uint32_t dst_lo, u_int size,
void (*hand)(struct fw_xfer *))
{
struct fw_xfer *xfer;
u_int len, ccb_dir, off = 0;
char *ptr;
if (debug > 1)
printf("%s: offset=%d size=%d\n", __func__, offset, size);
ccb_dir = orbi->ccb->ccb_h.flags & CAM_DIR_MASK;
ptr = (char *)orbi->ccb->csio.data_ptr + offset;
while (size > 0) {
/* XXX assume dst_lo + off doesn't overflow */
len = MIN(size, 2048 /* XXX */);
size -= len;
orbi->refcount ++;
if (ccb_dir == CAM_DIR_OUT)
xfer = fwmem_read_block(orbi->fwdev,
(void *)orbi, /*spd*/2,
dst_hi, dst_lo + off, len,
ptr + off, hand);
else
xfer = fwmem_write_block(orbi->fwdev,
(void *)orbi, /*spd*/2,
dst_hi, dst_lo + off, len,
ptr + off, hand);
if (xfer == NULL) {
printf("%s: xfer == NULL", __func__);
/* XXX what should we do?? */
orbi->refcount --;
}
off += len;
}
}
static void
sbp_targ_pt_done(struct fw_xfer *xfer)
{
struct orb_info *orbi;
union ccb *ccb;
u_int i, offset, res, len;
uint32_t t1, t2, *p;
orbi = (struct orb_info *)xfer->sc;
ccb = orbi->ccb;
if (orbi->state == ORBI_STATUS_ABORTED) {
if (debug)
printf("%s: orbi aborted\n", __func__);
sbp_targ_remove_orb_info(orbi->login, orbi);
free(orbi->page_table, M_SBP_TARG);
free(orbi, M_SBP_TARG);
fw_xfer_free(xfer);
return;
}
if (xfer->resp != 0) {
printf("%s: xfer->resp = %d\n", __func__, xfer->resp);
orbi->status.resp = SBP_TRANS_FAIL;
orbi->status.status = OBJ_PT | SBE_TIMEOUT/*XXX*/;
orbi->status.dead = 1;
orbi->status.len = 1;
sbp_targ_abort(orbi->sc, STAILQ_NEXT(orbi, link));
sbp_targ_status_FIFO(orbi,
orbi->login->fifo_hi, orbi->login->fifo_lo, /*dequeue*/1);
free(orbi->page_table, M_SBP_TARG);
fw_xfer_free(xfer);
return;
}
res = ccb->csio.dxfer_len;
offset = 0;
if (debug)
printf("%s: dxfer_len=%d\n", __func__, res);
orbi->refcount ++;
for (p = orbi->page_table, i = orbi->orb4.data_size; i > 0; i --) {
t1 = ntohl(*p++);
t2 = ntohl(*p++);
if (debug > 1)
printf("page_table: %04x:%08x %d\n",
t1 & 0xffff, t2, t1>>16);
len = MIN(t1 >> 16, res);
res -= len;
sbp_targ_xfer_buf(orbi, offset, t1 & 0xffff, t2, len,
sbp_targ_cam_done);
offset += len;
if (res == 0)
break;
}
orbi->refcount --;
if (orbi->refcount == 0)
printf("%s: refcount == 0\n", __func__);
if (res !=0)
/* XXX handle res != 0 case */
printf("%s: page table is too small(%d)\n", __func__, res);
fw_xfer_free(xfer);
return;
}
static void
sbp_targ_fetch_pt(struct orb_info *orbi)
{
struct fw_xfer *xfer;
if (debug)
printf("%s: page_table_size=%d\n",
__func__, orbi->orb4.data_size);
orbi->page_table = malloc(orbi->orb4.data_size*8, M_SBP_TARG, M_NOWAIT);
if (orbi->page_table == NULL)
goto error;
xfer = fwmem_read_block(orbi->fwdev, (void *)orbi, /*spd*/2,
orbi->data_hi, orbi->data_lo, orbi->orb4.data_size*8,
(void *)orbi->page_table, sbp_targ_pt_done);
if (xfer != NULL)
return;
error:
orbi->ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
xpt_done(orbi->ccb);
return;
}
static void
sbp_targ_action1(struct cam_sim *sim, union ccb *ccb)
{
struct sbp_targ_softc *sc;
struct sbp_targ_lstate *lstate;
cam_status status;
u_int ccb_dir;
sc = (struct sbp_targ_softc *)cam_sim_softc(sim);
status = sbp_targ_find_devs(sc, ccb, &lstate, TRUE);
switch (ccb->ccb_h.func_code) {
case XPT_CONT_TARGET_IO:
{
struct orb_info *orbi;
if (debug)
printf("%s: XPT_CONT_TARGET_IO (0x%08x)\n",
__func__, ccb->csio.tag_id);
if (status != CAM_REQ_CMP) {
ccb->ccb_h.status = status;
xpt_done(ccb);
break;
}
/* XXX transfer from/to initiator */
orbi = sbp_targ_get_orb_info(lstate,
ccb->csio.tag_id, ccb->csio.init_id);
if (orbi == NULL) {
ccb->ccb_h.status = CAM_REQ_ABORTED; /* XXX */
xpt_done(ccb);
break;
}
if (orbi->state == ORBI_STATUS_ABORTED) {
if (debug)
printf("%s: ctio aborted\n", __func__);
sbp_targ_remove_orb_info_locked(orbi->login, orbi);
free(orbi, M_SBP_TARG);
ccb->ccb_h.status = CAM_REQ_ABORTED;
xpt_done(ccb);
break;
}
orbi->state = ORBI_STATUS_CTIO;
orbi->ccb = ccb;
ccb_dir = ccb->ccb_h.flags & CAM_DIR_MASK;
/* XXX */
if (ccb->csio.dxfer_len == 0)
ccb_dir = CAM_DIR_NONE;
/* Sanity check */
if (ccb_dir == CAM_DIR_IN && orbi->orb4.dir == 0)
printf("%s: direction mismatch\n", __func__);
/* check page table */
if (ccb_dir != CAM_DIR_NONE && orbi->orb4.page_table_present) {
if (debug)
printf("%s: page_table_present\n",
__func__);
if (orbi->orb4.page_size != 0) {
printf("%s: unsupported pagesize %d != 0\n",
__func__, orbi->orb4.page_size);
ccb->ccb_h.status = CAM_REQ_INVALID;
xpt_done(ccb);
break;
}
sbp_targ_fetch_pt(orbi);
break;
}
/* Sanity check */
if (ccb_dir != CAM_DIR_NONE &&
orbi->orb4.data_size != ccb->csio.dxfer_len)
printf("%s: data_size(%d) != dxfer_len(%d)\n",
__func__, orbi->orb4.data_size,
ccb->csio.dxfer_len);
if (ccb_dir != CAM_DIR_NONE)
sbp_targ_xfer_buf(orbi, 0, orbi->data_hi,
orbi->data_lo,
MIN(orbi->orb4.data_size, ccb->csio.dxfer_len),
sbp_targ_cam_done);
if (ccb_dir == CAM_DIR_NONE) {
if ((ccb->ccb_h.flags & CAM_SEND_STATUS) != 0) {
/* XXX */
SBP_UNLOCK(sc);
sbp_targ_send_status(orbi, ccb);
SBP_LOCK(sc);
}
ccb->ccb_h.status = CAM_REQ_CMP;
xpt_done(ccb);
}
break;
}
case XPT_ACCEPT_TARGET_IO: /* Add Accept Target IO Resource */
if (status != CAM_REQ_CMP) {
ccb->ccb_h.status = status;
xpt_done(ccb);
break;
}
SLIST_INSERT_HEAD(&lstate->accept_tios, &ccb->ccb_h,
sim_links.sle);
ccb->ccb_h.status = CAM_REQ_INPROG;
if ((lstate->flags & F_ATIO_STARVED) != 0) {
struct sbp_targ_login *login;
if (debug)
printf("%s: new atio arrived\n", __func__);
lstate->flags &= ~F_ATIO_STARVED;
STAILQ_FOREACH(login, &lstate->logins, link)
if ((login->flags & F_ATIO_STARVED) != 0) {
login->flags &= ~F_ATIO_STARVED;
sbp_targ_fetch_orb(lstate->sc,
login->fwdev,
login->last_hi, login->last_lo,
login, FETCH_CMD);
}
}
break;
case XPT_NOTIFY_ACKNOWLEDGE: /* recycle notify ack */
case XPT_IMMEDIATE_NOTIFY: /* Add Immediate Notify Resource */
if (status != CAM_REQ_CMP) {
ccb->ccb_h.status = status;
xpt_done(ccb);
break;
}
SLIST_INSERT_HEAD(&lstate->immed_notifies, &ccb->ccb_h,
sim_links.sle);
ccb->ccb_h.status = CAM_REQ_INPROG;
sbp_targ_send_lstate_events(sc, lstate);
break;
case XPT_EN_LUN:
sbp_targ_en_lun(sc, ccb);
xpt_done(ccb);
break;
case XPT_PATH_INQ:
{
struct ccb_pathinq *cpi = &ccb->cpi;
cpi->version_num = 1; /* XXX??? */
cpi->hba_inquiry = PI_TAG_ABLE;
cpi->target_sprt = PIT_PROCESSOR
| PIT_DISCONNECT
| PIT_TERM_IO;
cpi->hba_misc = PIM_NOBUSRESET | PIM_NO_6_BYTE;
cpi->hba_eng_cnt = 0;
cpi->max_target = 7; /* XXX */
cpi->max_lun = MAX_LUN - 1;
cpi->initiator_id = 7; /* XXX */
cpi->bus_id = sim->bus_id;
cpi->base_transfer_speed = 400 * 1000 / 8;
strncpy(cpi->sim_vid, "FreeBSD", SIM_IDLEN);
strncpy(cpi->hba_vid, "SBP_TARG", HBA_IDLEN);
strncpy(cpi->dev_name, sim->sim_name, DEV_IDLEN);
cpi->unit_number = sim->unit_number;
cpi->ccb_h.status = CAM_REQ_CMP;
xpt_done(ccb);
break;
}
case XPT_ABORT:
{
union ccb *accb = ccb->cab.abort_ccb;
switch (accb->ccb_h.func_code) {
case XPT_ACCEPT_TARGET_IO:
case XPT_IMMEDIATE_NOTIFY:
ccb->ccb_h.status = sbp_targ_abort_ccb(sc, ccb);
break;
case XPT_CONT_TARGET_IO:
/* XXX */
ccb->ccb_h.status = CAM_UA_ABORT;
break;
default:
printf("%s: aborting unknown function %d\n",
__func__, accb->ccb_h.func_code);
ccb->ccb_h.status = CAM_REQ_INVALID;
break;
}
xpt_done(ccb);
break;
}
default:
printf("%s: unknown function %d\n",
__func__, ccb->ccb_h.func_code);
ccb->ccb_h.status = CAM_REQ_INVALID;
xpt_done(ccb);
break;
}
return;
}
static void
sbp_targ_action(struct cam_sim *sim, union ccb *ccb)
{
int s;
s = splfw();
sbp_targ_action1(sim, ccb);
splx(s);
}
static void
sbp_targ_poll(struct cam_sim *sim)
{
/* XXX */
return;
}
static void
sbp_targ_cmd_handler(struct fw_xfer *xfer)
{
struct fw_pkt *fp;
uint32_t *orb;
struct corb4 *orb4;
struct orb_info *orbi;
struct ccb_accept_tio *atio;
u_char *bytes;
int i;
orbi = (struct orb_info *)xfer->sc;
if (xfer->resp != 0) {
printf("%s: xfer->resp = %d\n", __func__, xfer->resp);
orbi->status.resp = SBP_TRANS_FAIL;
orbi->status.status = OBJ_ORB | SBE_TIMEOUT/*XXX*/;
orbi->status.dead = 1;
orbi->status.len = 1;
sbp_targ_abort(orbi->sc, STAILQ_NEXT(orbi, link));
sbp_targ_status_FIFO(orbi,
orbi->login->fifo_hi, orbi->login->fifo_lo, /*dequeue*/1);
fw_xfer_free(xfer);
return;
}
fp = &xfer->recv.hdr;
atio = orbi->atio;
if (orbi->state == ORBI_STATUS_ABORTED) {
printf("%s: aborted\n", __func__);
sbp_targ_remove_orb_info(orbi->login, orbi);
free(orbi, M_SBP_TARG);
atio->ccb_h.status = CAM_REQ_ABORTED;
SBP_LOCK(orbi->sc);
xpt_done((union ccb*)atio);
SBP_UNLOCK(orbi->sc);
goto done0;
}
orbi->state = ORBI_STATUS_ATIO;
orb = orbi->orb;
/* swap payload except SCSI command */
for (i = 0; i < 5; i ++)
orb[i] = ntohl(orb[i]);
orb4 = (struct corb4 *)&orb[4];
if (orb4->rq_fmt != 0) {
/* XXX */
printf("%s: rq_fmt(%d) != 0\n", __func__, orb4->rq_fmt);
}
atio->ccb_h.target_id = 0; /* XXX */
atio->ccb_h.target_lun = orbi->login->lstate->lun;
atio->sense_len = 0;
atio->tag_action = 1; /* XXX */
atio->tag_id = orbi->orb_lo;
atio->init_id = orbi->login->id;
atio->ccb_h.flags = CAM_TAG_ACTION_VALID;
bytes = (u_char *)&orb[5];
if (debug)
printf("%s: %p %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x\n",
__func__, (void *)atio,
bytes[0], bytes[1], bytes[2], bytes[3], bytes[4],
bytes[5], bytes[6], bytes[7], bytes[8], bytes[9]);
switch (bytes[0] >> 5) {
case 0:
atio->cdb_len = 6;
break;
case 1:
case 2:
atio->cdb_len = 10;
break;
case 4:
atio->cdb_len = 16;
break;
case 5:
atio->cdb_len = 12;
break;
case 3:
default:
/* Only copy the opcode. */
atio->cdb_len = 1;
printf("Reserved or VU command code type encountered\n");
break;
}
memcpy(atio->cdb_io.cdb_bytes, bytes, atio->cdb_len);
atio->ccb_h.status |= CAM_CDB_RECVD;
/* next ORB */
if ((orb[0] & (1<<31)) == 0) {
if (debug)
printf("%s: fetch next orb\n", __func__);
orbi->status.src = SRC_NEXT_EXISTS;
sbp_targ_fetch_orb(orbi->sc, orbi->fwdev,
orb[0], orb[1], orbi->login, FETCH_CMD);
} else {
orbi->status.src = SRC_NO_NEXT;
orbi->login->flags &= ~F_LINK_ACTIVE;
}
orbi->data_hi = orb[2];
orbi->data_lo = orb[3];
orbi->orb4 = *orb4;
SBP_LOCK(orbi->sc);
xpt_done((union ccb*)atio);
SBP_UNLOCK(orbi->sc);
done0:
fw_xfer_free(xfer);
return;
}
static struct sbp_targ_login *
sbp_targ_get_login(struct sbp_targ_softc *sc, struct fw_device *fwdev, int lun)
{
struct sbp_targ_lstate *lstate;
struct sbp_targ_login *login;
int i;
lstate = sc->lstate[lun];
STAILQ_FOREACH(login, &lstate->logins, link)
if (login->fwdev == fwdev)
return (login);
for (i = 0; i < MAX_LOGINS; i ++)
if (sc->logins[i] == NULL)
goto found;
printf("%s: increase MAX_LOGIN\n", __func__);
return (NULL);
found:
login = (struct sbp_targ_login *)malloc(
sizeof(struct sbp_targ_login), M_SBP_TARG, M_NOWAIT | M_ZERO);
if (login == NULL) {
printf("%s: malloc failed\n", __func__);
return (NULL);
}
login->id = i;
login->fwdev = fwdev;
login->lstate = lstate;
login->last_hi = 0xffff;
login->last_lo = 0xffffffff;
login->hold_sec = 1;
STAILQ_INIT(&login->orbs);
CALLOUT_INIT(&login->hold_callout);
sc->logins[i] = login;
return (login);
}
static void
sbp_targ_mgm_handler(struct fw_xfer *xfer)
{
struct sbp_targ_lstate *lstate;
struct sbp_targ_login *login;
struct fw_pkt *fp;
uint32_t *orb;
struct morb4 *orb4;
struct orb_info *orbi;
int i;
orbi = (struct orb_info *)xfer->sc;
if (xfer->resp != 0) {
printf("%s: xfer->resp = %d\n", __func__, xfer->resp);
orbi->status.resp = SBP_TRANS_FAIL;
orbi->status.status = OBJ_ORB | SBE_TIMEOUT/*XXX*/;
orbi->status.dead = 1;
orbi->status.len = 1;
sbp_targ_abort(orbi->sc, STAILQ_NEXT(orbi, link));
sbp_targ_status_FIFO(orbi,
orbi->login->fifo_hi, orbi->login->fifo_lo, /*dequeue*/0);
fw_xfer_free(xfer);
return;
}
fp = &xfer->recv.hdr;
orb = orbi->orb;
/* swap payload */
for (i = 0; i < 8; i ++) {
orb[i] = ntohl(orb[i]);
}
orb4 = (struct morb4 *)&orb[4];
if (debug)
printf("%s: %s\n", __func__, orb_fun_name[orb4->fun]);
orbi->status.src = SRC_NO_NEXT;
switch (orb4->fun << 16) {
case ORB_FUN_LGI:
{
int exclusive = 0, lun;
if (orb[4] & ORB_EXV)
exclusive = 1;
lun = orb4->id;
lstate = orbi->sc->lstate[lun];
if (lun >= MAX_LUN || lstate == NULL ||
(exclusive &&
STAILQ_FIRST(&lstate->logins) != NULL &&
STAILQ_FIRST(&lstate->logins)->fwdev != orbi->fwdev)
) {
/* error */
orbi->status.dead = 1;
orbi->status.status = STATUS_ACCESS_DENY;
orbi->status.len = 1;
break;
}
/* allocate login */
login = sbp_targ_get_login(orbi->sc, orbi->fwdev, lun);
if (login == NULL) {
printf("%s: sbp_targ_get_login failed\n",
__func__);
orbi->status.dead = 1;
orbi->status.status = STATUS_RES_UNAVAIL;
orbi->status.len = 1;
break;
}
printf("%s: login id=%d\n", __func__, login->id);
login->fifo_hi = orb[6];
login->fifo_lo = orb[7];
login->loginres.len = htons(sizeof(uint32_t) * 4);
login->loginres.id = htons(login->id);
login->loginres.cmd_hi = htons(SBP_TARG_BIND_HI);
login->loginres.cmd_lo = htonl(SBP_TARG_BIND_LO(login->id));
login->loginres.recon_hold = htons(login->hold_sec);
STAILQ_INSERT_TAIL(&lstate->logins, login, link);
fwmem_write_block(orbi->fwdev, NULL, /*spd*/2, orb[2], orb[3],
sizeof(struct sbp_login_res), (void *)&login->loginres,
fw_asy_callback_free);
/* XXX return status after loginres is successfully written */
break;
}
case ORB_FUN_RCN:
login = orbi->sc->logins[orb4->id];
if (login != NULL && login->fwdev == orbi->fwdev) {
login->flags &= ~F_HOLD;
callout_stop(&login->hold_callout);
printf("%s: reconnected id=%d\n",
__func__, login->id);
} else {
orbi->status.dead = 1;
orbi->status.status = STATUS_ACCESS_DENY;
printf("%s: reconnection faild id=%d\n",
__func__, orb4->id);
}
break;
case ORB_FUN_LGO:
login = orbi->sc->logins[orb4->id];
if (login->fwdev != orbi->fwdev) {
printf("%s: wrong initiator\n", __func__);
break;
}
sbp_targ_dealloc_login(login);
break;
default:
printf("%s: %s not implemented yet\n",
__func__, orb_fun_name[orb4->fun]);
break;
}
orbi->status.len = 1;
sbp_targ_status_FIFO(orbi, orb[6], orb[7], /*dequeue*/0);
fw_xfer_free(xfer);
return;
}
static void
sbp_targ_pointer_handler(struct fw_xfer *xfer)
{
struct orb_info *orbi;
uint32_t orb0, orb1;
orbi = (struct orb_info *)xfer->sc;
if (xfer->resp != 0) {
printf("%s: xfer->resp = %d\n", __func__, xfer->resp);
goto done;
}
orb0 = ntohl(orbi->orb[0]);
orb1 = ntohl(orbi->orb[1]);
if ((orb0 & (1 << 31)) != 0) {
printf("%s: invalid pointer\n", __func__);
goto done;
}
sbp_targ_fetch_orb(orbi->login->lstate->sc, orbi->fwdev,
(uint16_t)orb0, orb1, orbi->login, FETCH_CMD);
done:
free(orbi, M_SBP_TARG);
fw_xfer_free(xfer);
return;
}
static void
sbp_targ_fetch_orb(struct sbp_targ_softc *sc, struct fw_device *fwdev,
uint16_t orb_hi, uint32_t orb_lo, struct sbp_targ_login *login,
int mode)
{
struct orb_info *orbi;
if (debug)
printf("%s: fetch orb %04x:%08x\n", __func__, orb_hi, orb_lo);
orbi = malloc(sizeof(struct orb_info), M_SBP_TARG, M_NOWAIT | M_ZERO);
if (orbi == NULL) {
printf("%s: malloc failed\n", __func__);
return;
}
orbi->sc = sc;
orbi->fwdev = fwdev;
orbi->login = login;
orbi->orb_hi = orb_hi;
orbi->orb_lo = orb_lo;
orbi->status.orb_hi = htons(orb_hi);
orbi->status.orb_lo = htonl(orb_lo);
switch (mode) {
case FETCH_MGM:
fwmem_read_block(fwdev, (void *)orbi, /*spd*/2, orb_hi, orb_lo,
sizeof(uint32_t) * 8, &orbi->orb[0],
sbp_targ_mgm_handler);
break;
case FETCH_CMD:
orbi->state = ORBI_STATUS_FETCH;
login->last_hi = orb_hi;
login->last_lo = orb_lo;
login->flags |= F_LINK_ACTIVE;
/* dequeue */
SBP_LOCK(sc);
orbi->atio = (struct ccb_accept_tio *)
SLIST_FIRST(&login->lstate->accept_tios);
if (orbi->atio == NULL) {
SBP_UNLOCK(sc);
printf("%s: no free atio\n", __func__);
login->lstate->flags |= F_ATIO_STARVED;
login->flags |= F_ATIO_STARVED;
#if 0
/* XXX ?? */
login->fwdev = fwdev;
#endif
break;
}
SLIST_REMOVE_HEAD(&login->lstate->accept_tios, sim_links.sle);
STAILQ_INSERT_TAIL(&login->orbs, orbi, link);
SBP_UNLOCK(sc);
fwmem_read_block(fwdev, (void *)orbi, /*spd*/2, orb_hi, orb_lo,
sizeof(uint32_t) * 8, &orbi->orb[0],
sbp_targ_cmd_handler);
break;
case FETCH_POINTER:
orbi->state = ORBI_STATUS_POINTER;
login->flags |= F_LINK_ACTIVE;
fwmem_read_block(fwdev, (void *)orbi, /*spd*/2, orb_hi, orb_lo,
sizeof(uint32_t) * 2, &orbi->orb[0],
sbp_targ_pointer_handler);
break;
default:
printf("%s: invalid mode %d\n", __func__, mode);
}
}
static void
sbp_targ_resp_callback(struct fw_xfer *xfer)
{
struct sbp_targ_softc *sc;
int s;
if (debug)
printf("%s: xfer=%p\n", __func__, xfer);
sc = (struct sbp_targ_softc *)xfer->sc;
fw_xfer_unload(xfer);
xfer->recv.pay_len = SBP_TARG_RECV_LEN;
xfer->hand = sbp_targ_recv;
s = splfw();
STAILQ_INSERT_TAIL(&sc->fwb.xferlist, xfer, link);
splx(s);
}
static int
sbp_targ_cmd(struct fw_xfer *xfer, struct fw_device *fwdev, int login_id,
int reg)
{
struct sbp_targ_login *login;
struct sbp_targ_softc *sc;
int rtcode = 0;
if (login_id < 0 || login_id >= MAX_LOGINS)
return(RESP_ADDRESS_ERROR);
sc = (struct sbp_targ_softc *)xfer->sc;
login = sc->logins[login_id];
if (login == NULL)
return(RESP_ADDRESS_ERROR);
if (login->fwdev != fwdev) {
/* XXX */
return(RESP_ADDRESS_ERROR);
}
switch (reg) {
case 0x08: /* ORB_POINTER */
if (debug)
printf("%s: ORB_POINTER(%d)\n", __func__, login_id);
if ((login->flags & F_LINK_ACTIVE) != 0) {
if (debug)
printf("link active (ORB_POINTER)\n");
break;
}
sbp_targ_fetch_orb(sc, fwdev,
ntohl(xfer->recv.payload[0]),
ntohl(xfer->recv.payload[1]),
login, FETCH_CMD);
break;
case 0x04: /* AGENT_RESET */
if (debug)
printf("%s: AGENT RESET(%d)\n", __func__, login_id);
login->last_hi = 0xffff;
login->last_lo = 0xffffffff;
sbp_targ_abort(sc, STAILQ_FIRST(&login->orbs));
break;
case 0x10: /* DOORBELL */
if (debug)
printf("%s: DOORBELL(%d)\n", __func__, login_id);
if (login->last_hi == 0xffff &&
login->last_lo == 0xffffffff) {
printf("%s: no previous pointer(DOORBELL)\n",
__func__);
break;
}
if ((login->flags & F_LINK_ACTIVE) != 0) {
if (debug)
printf("link active (DOORBELL)\n");
break;
}
sbp_targ_fetch_orb(sc, fwdev,
login->last_hi, login->last_lo,
login, FETCH_POINTER);
break;
case 0x00: /* AGENT_STATE */
printf("%s: AGENT_STATE (%d:ignore)\n", __func__, login_id);
break;
case 0x14: /* UNSOLICITED_STATE_ENABLE */
printf("%s: UNSOLICITED_STATE_ENABLE (%d:ignore)\n",
__func__, login_id);
break;
default:
printf("%s: invalid register %d(%d)\n",
__func__, reg, login_id);
rtcode = RESP_ADDRESS_ERROR;
}
return (rtcode);
}
static int
sbp_targ_mgm(struct fw_xfer *xfer, struct fw_device *fwdev)
{
struct sbp_targ_softc *sc;
struct fw_pkt *fp;
sc = (struct sbp_targ_softc *)xfer->sc;
fp = &xfer->recv.hdr;
if (fp->mode.wreqb.tcode != FWTCODE_WREQB){
printf("%s: tcode = %d\n", __func__, fp->mode.wreqb.tcode);
return(RESP_TYPE_ERROR);
}
sbp_targ_fetch_orb(sc, fwdev,
ntohl(xfer->recv.payload[0]),
ntohl(xfer->recv.payload[1]),
NULL, FETCH_MGM);
return(0);
}
static void
sbp_targ_recv(struct fw_xfer *xfer)
{
struct fw_pkt *fp, *sfp;
struct fw_device *fwdev;
uint32_t lo;
int s, rtcode;
struct sbp_targ_softc *sc;
s = splfw();
sc = (struct sbp_targ_softc *)xfer->sc;
fp = &xfer->recv.hdr;
fwdev = fw_noderesolve_nodeid(sc->fd.fc, fp->mode.wreqb.src & 0x3f);
if (fwdev == NULL) {
printf("%s: cannot resolve nodeid=%d\n",
__func__, fp->mode.wreqb.src & 0x3f);
rtcode = RESP_TYPE_ERROR; /* XXX */
goto done;
}
lo = fp->mode.wreqb.dest_lo;
if (lo == SBP_TARG_BIND_LO(-1))
rtcode = sbp_targ_mgm(xfer, fwdev);
else if (lo >= SBP_TARG_BIND_LO(0))
rtcode = sbp_targ_cmd(xfer, fwdev, SBP_TARG_LOGIN_ID(lo),
lo % 0x20);
else
rtcode = RESP_ADDRESS_ERROR;
done:
if (rtcode != 0)
printf("%s: rtcode = %d\n", __func__, rtcode);
sfp = &xfer->send.hdr;
xfer->send.spd = 2; /* XXX */
xfer->hand = sbp_targ_resp_callback;
sfp->mode.wres.dst = fp->mode.wreqb.src;
sfp->mode.wres.tlrt = fp->mode.wreqb.tlrt;
sfp->mode.wres.tcode = FWTCODE_WRES;
sfp->mode.wres.rtcode = rtcode;
sfp->mode.wres.pri = 0;
fw_asyreq(xfer->fc, -1, xfer);
splx(s);
}
static int
sbp_targ_attach(device_t dev)
{
struct sbp_targ_softc *sc;
struct cam_devq *devq;
struct firewire_comm *fc;
sc = (struct sbp_targ_softc *) device_get_softc(dev);
bzero((void *)sc, sizeof(struct sbp_targ_softc));
mtx_init(&sc->mtx, "sbp_targ", NULL, MTX_DEF);
sc->fd.fc = fc = device_get_ivars(dev);
sc->fd.dev = dev;
sc->fd.post_explore = (void *) sbp_targ_post_explore;
sc->fd.post_busreset = (void *) sbp_targ_post_busreset;
devq = cam_simq_alloc(/*maxopenings*/MAX_LUN*MAX_INITIATORS);
if (devq == NULL)
return (ENXIO);
sc->sim = cam_sim_alloc(sbp_targ_action, sbp_targ_poll,
"sbp_targ", sc, device_get_unit(dev), &sc->mtx,
/*untagged*/ 1, /*tagged*/ 1, devq);
if (sc->sim == NULL) {
cam_simq_free(devq);
return (ENXIO);
}
SBP_LOCK(sc);
if (xpt_bus_register(sc->sim, dev, /*bus*/0) != CAM_SUCCESS)
goto fail;
if (xpt_create_path(&sc->path, /*periph*/ NULL, cam_sim_path(sc->sim),
CAM_TARGET_WILDCARD, CAM_LUN_WILDCARD) != CAM_REQ_CMP) {
xpt_bus_deregister(cam_sim_path(sc->sim));
goto fail;
}
SBP_UNLOCK(sc);
sc->fwb.start = SBP_TARG_BIND_START;
sc->fwb.end = SBP_TARG_BIND_END;
/* pre-allocate xfer */
STAILQ_INIT(&sc->fwb.xferlist);
fw_xferlist_add(&sc->fwb.xferlist, M_SBP_TARG,
/*send*/ 0, /*recv*/ SBP_TARG_RECV_LEN, MAX_LUN /* XXX */,
fc, (void *)sc, sbp_targ_recv);
fw_bindadd(fc, &sc->fwb);
return 0;
fail:
SBP_UNLOCK(sc);
cam_sim_free(sc->sim, /*free_devq*/TRUE);
return (ENXIO);
}
static int
sbp_targ_detach(device_t dev)
{
struct sbp_targ_softc *sc;
struct sbp_targ_lstate *lstate;
int i;
sc = (struct sbp_targ_softc *)device_get_softc(dev);
sc->fd.post_busreset = NULL;
SBP_LOCK(sc);
xpt_free_path(sc->path);
xpt_bus_deregister(cam_sim_path(sc->sim));
SBP_UNLOCK(sc);
cam_sim_free(sc->sim, /*free_devq*/TRUE);
for (i = 0; i < MAX_LUN; i ++) {
lstate = sc->lstate[i];
if (lstate != NULL) {
xpt_free_path(lstate->path);
free(lstate, M_SBP_TARG);
}
}
if (sc->black_hole != NULL) {
xpt_free_path(sc->black_hole->path);
free(sc->black_hole, M_SBP_TARG);
}
fw_bindremove(sc->fd.fc, &sc->fwb);
fw_xferlist_remove(&sc->fwb.xferlist);
mtx_destroy(&sc->mtx);
return 0;
}
static devclass_t sbp_targ_devclass;
static device_method_t sbp_targ_methods[] = {
/* device interface */
DEVMETHOD(device_identify, sbp_targ_identify),
DEVMETHOD(device_probe, sbp_targ_probe),
DEVMETHOD(device_attach, sbp_targ_attach),
DEVMETHOD(device_detach, sbp_targ_detach),
{ 0, 0 }
};
static driver_t sbp_targ_driver = {
"sbp_targ",
sbp_targ_methods,
sizeof(struct sbp_targ_softc),
};
DRIVER_MODULE(sbp_targ, firewire, sbp_targ_driver, sbp_targ_devclass, 0, 0);
MODULE_VERSION(sbp_targ, 1);
MODULE_DEPEND(sbp_targ, firewire, 1, 1, 1);
MODULE_DEPEND(sbp_targ, cam, 1, 1, 1);