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freebsd/sys/dev/firewire/sbp_targ.c
Alexander Kabaev 23667f089d Remove obsolete compatibility glue and improve firewire code readability. 
Commit my version of style(9) pass over the firewire code. Now that
other people have started changing the code carrying this is as a
local patch is not longer a viable option.

MFC after:	1 month
2014-09-27 16:50:21 +00:00

2069 lines
51 KiB
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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.
*
* $FreeBSD$
*/
#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>
#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>
#include <cam/scsi/scsi_message.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)
static 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
};
/*
* Urestricted page table format
* states that the segment length
* and high base addr are in the first
* 32 bits and the base low is in
* the second
*/
struct unrestricted_page_table_fmt {
uint16_t segment_len;
uint16_t segment_base_high;
uint32_t segment_base_low;
};
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];
struct unrestricted_page_table_fmt *page_table;
struct unrestricted_page_table_fmt *cur_pte;
struct unrestricted_page_table_fmt *last_pte;
uint32_t last_block_read;
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_xfer_pt(struct orb_info *);
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);
if (debug)
printf("%s: free orbi %p\n", __func__, orbi);
free(orbi, M_SBP_TARG);
orbi = NULL;
}
callout_stop(&login->hold_callout);
STAILQ_REMOVE(&login->lstate->logins, login, sbp_targ_login, link);
login->lstate->sc->logins[login->id] = NULL;
if (debug)
printf("%s: free login %p\n", __func__, login);
free((void *)login, M_SBP_TARG);
login = NULL;
}
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;
if (debug)
printf("setting black hole for this target id(%d)\n", ccb->ccb_h.target_id);
return (CAM_REQ_CMP);
}
lun = ccb->ccb_h.target_lun;
if (lun >= MAX_LUN)
return (CAM_LUN_INVALID);
*lstate = sc->lstate[lun];
if (notfound_failure != 0 && *lstate == NULL) {
if (debug)
printf("%s: lstate for lun is invalid, target(%d), lun(%d)\n",
__func__, ccb->ccb_h.target_id, lun);
return (CAM_PATH_INVALID);
} else
if (debug)
printf("%s: setting lstate for tgt(%d) lun(%d)\n",
__func__,ccb->ccb_h.target_id, lun);
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;
} else {
if (debug)
printf("%s: malloc'd lstate %p\n",__func__, lstate);
}
if (ccb->ccb_h.target_id == CAM_TARGET_WILDCARD) {
sc->black_hole = lstate;
if (debug)
printf("Blackhole set due to target id == %d\n",
ccb->ccb_h.target_id);
} 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);
lstate = NULL;
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;
printf("Invalid lstate for this target\n");
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) {
printf("status != CAM_REQ_CMP\n");
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;
if (debug)
printf("%s: free lstate %p\n", __func__, lstate);
free(lstate, M_SBP_TARG);
lstate = NULL;
/* 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 (orbi->state <= ORBI_STATUS_ATIO) {
sbp_targ_remove_orb_info_locked(orbi->login, orbi);
if (debug)
printf("%s: free orbi %p\n", __func__, orbi);
free(orbi, M_SBP_TARG);
orbi = NULL;
} else
orbi->state = ORBI_STATUS_ABORTED;
}
}
SBP_UNLOCK(sc);
}
static void
sbp_targ_free_orbi(struct fw_xfer *xfer)
{
struct orb_info *orbi;
if (xfer->resp != 0) {
/* XXX */
printf("%s: xfer->resp = %d\n", __func__, xfer->resp);
}
orbi = (struct orb_info *)xfer->sc;
if ( orbi->page_table != NULL ) {
if (debug)
printf("%s: free orbi->page_table %p\n", __func__, orbi->page_table);
free(orbi->page_table, M_SBP_TARG);
orbi->page_table = NULL;
}
if (debug)
printf("%s: free orbi %p\n", __func__, orbi);
free(orbi, M_SBP_TARG);
orbi = NULL;
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*/FWSPD_S400, 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__);
}
}
/*
* Generate the appropriate CAM status for the
* target.
*/
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 */
ccb->ccb_h.status= CAM_REQ_CMP;
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:
if (debug)
printf("%s: STATUS SCSI_STATUS_CHECK_COND\n", __func__);
goto process_scsi_status;
case SCSI_STATUS_BUSY:
if (debug)
printf("%s: STATUS SCSI_STATUS_BUSY\n", __func__);
goto process_scsi_status;
case SCSI_STATUS_CMD_TERMINATED:
process_scsi_status:
{
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;
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;
ccb->ccb_h.status |= CAM_SENT_SENSE;
}
break;
}
default:
printf("%s: unknown scsi status 0x%x\n", __func__,
sbp_status->status);
}
sbp_targ_status_FIFO(orbi,
orbi->login->fifo_hi, orbi->login->fifo_lo, /*dequeue*/1);
}
/*
* Invoked as a callback handler from fwmem_read/write_block
*
* Process read/write of initiator address space
* completion and pass status onto the backend target.
* If this is a partial read/write for a CCB then
* we decrement the orbi's refcount to indicate
* the status of the read/write is complete
*/
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)
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) {
if (debug)
printf("%s: free orbi->page_table %p\n",
__func__, orbi->page_table);
free(orbi->page_table, M_SBP_TARG);
}
if (debug)
printf("%s: free orbi %p\n", __func__, orbi);
free(orbi, M_SBP_TARG);
orbi = NULL;
} else if (orbi->status.resp == ORBI_STATUS_NONE) {
if ((ccb->ccb_h.flags & CAM_SEND_STATUS) != 0) {
if (debug)
printf("%s: CAM_SEND_STATUS set %0x\n", __func__, ccb->ccb_h.flags);
sbp_targ_send_status(orbi, ccb);
} else {
if (debug)
printf("%s: CAM_SEND_STATUS not set %0x\n", __func__, ccb->ccb_h.flags);
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);
}
/*
* directly execute a read or write to the initiator
* address space and set hand(sbp_targ_cam_done) to
* process the completion from the SIM to the target.
* set orbi->refcount to inidicate that a read/write
* is inflight to/from the initiator.
*/
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) {
if (debug)
printf("%s: CAM_DIR_OUT --> read block in?\n",__func__);
xfer = fwmem_read_block(orbi->fwdev,
(void *)orbi, /*spd*/FWSPD_S400,
dst_hi, dst_lo + off, len,
ptr + off, hand);
} else {
if (debug)
printf("%s: CAM_DIR_IN --> write block out?\n",__func__);
xfer = fwmem_write_block(orbi->fwdev,
(void *)orbi, /*spd*/FWSPD_S400,
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;
struct unrestricted_page_table_fmt *pt;
uint32_t i;
orbi = (struct orb_info *)xfer->sc;
if (orbi->state == ORBI_STATUS_ABORTED) {
if (debug)
printf("%s: orbi aborted\n", __func__);
sbp_targ_remove_orb_info(orbi->login, orbi);
if (debug) {
printf("%s: free orbi->page_table %p\n", __func__, orbi->page_table);
printf("%s: free orbi %p\n", __func__, orbi);
}
free(orbi->page_table, M_SBP_TARG);
free(orbi, M_SBP_TARG);
orbi = NULL;
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));
if (debug)
printf("%s: free orbi->page_table %p\n", __func__, orbi->page_table);
sbp_targ_status_FIFO(orbi,
orbi->login->fifo_hi, orbi->login->fifo_lo, /*dequeue*/1);
free(orbi->page_table, M_SBP_TARG);
orbi->page_table = NULL;
fw_xfer_free(xfer);
return;
}
orbi->refcount++;
/*
* Set endianess here so we don't have
* to deal with is later
*/
for (i = 0, pt = orbi->page_table; i < orbi->orb4.data_size; i++, pt++) {
pt->segment_len = ntohs(pt->segment_len);
if (debug)
printf("%s:segment_len = %u\n", __func__,pt->segment_len);
pt->segment_base_high = ntohs(pt->segment_base_high);
pt->segment_base_low = ntohl(pt->segment_base_low);
}
sbp_targ_xfer_pt(orbi);
orbi->refcount--;
if (orbi->refcount == 0)
printf("%s: refcount == 0\n", __func__);
fw_xfer_free(xfer);
return;
}
static void sbp_targ_xfer_pt(struct orb_info *orbi)
{
union ccb *ccb;
uint32_t res, offset, len;
ccb = orbi->ccb;
if (debug)
printf("%s: dxfer_len=%d\n", __func__, ccb->csio.dxfer_len);
res = ccb->csio.dxfer_len;
/*
* If the page table required multiple CTIO's to
* complete, then cur_pte is non NULL
* and we need to start from the last position
* If this is the first pass over a page table
* then we just start at the beginning of the page
* table.
*
* Parse the unrestricted page table and figure out where we need
* to shove the data from this read request.
*/
for (offset = 0, len = 0; (res != 0) && (orbi->cur_pte < orbi->last_pte); offset += len) {
len = MIN(orbi->cur_pte->segment_len, res);
res -= len;
if (debug)
printf("%s:page_table: %04x:%08x segment_len(%u) res(%u) len(%u)\n",
__func__, orbi->cur_pte->segment_base_high,
orbi->cur_pte->segment_base_low,
orbi->cur_pte->segment_len,
res, len);
sbp_targ_xfer_buf(orbi, offset,
orbi->cur_pte->segment_base_high,
orbi->cur_pte->segment_base_low,
len, sbp_targ_cam_done);
/*
* If we have only written partially to
* this page table, then we need to save
* our position for the next CTIO. If we
* have completed the page table, then we
* are safe to move on to the next entry.
*/
if (len == orbi->cur_pte->segment_len) {
orbi->cur_pte++;
} else {
uint32_t saved_base_low;
/* Handle transfers that cross a 4GB boundary. */
saved_base_low = orbi->cur_pte->segment_base_low;
orbi->cur_pte->segment_base_low += len;
if (orbi->cur_pte->segment_base_low < saved_base_low)
orbi->cur_pte->segment_base_high++;
orbi->cur_pte->segment_len -= len;
}
}
if (debug) {
printf("%s: base_low(%08x) page_table_off(%p) last_block(%u)\n",
__func__, orbi->cur_pte->segment_base_low,
orbi->cur_pte, orbi->last_block_read);
}
if (res != 0)
printf("Warning - short pt encountered. "
"Could not transfer all data.\n");
return;
}
/*
* Create page table in local memory
* and transfer it from the initiator
* in order to know where we are supposed
* to put the data.
*/
static void
sbp_targ_fetch_pt(struct orb_info *orbi)
{
struct fw_xfer *xfer;
/*
* Pull in page table from initiator
* and setup for data from our
* backend device.
*/
if (orbi->page_table == NULL) {
orbi->page_table = malloc(orbi->orb4.data_size*
sizeof(struct unrestricted_page_table_fmt),
M_SBP_TARG, M_NOWAIT|M_ZERO);
if (orbi->page_table == NULL)
goto error;
orbi->cur_pte = orbi->page_table;
orbi->last_pte = orbi->page_table + orbi->orb4.data_size;
orbi->last_block_read = orbi->orb4.data_size;
if (debug && orbi->page_table != NULL)
printf("%s: malloc'd orbi->page_table(%p), orb4.data_size(%u)\n",
__func__, orbi->page_table, orbi->orb4.data_size);
xfer = fwmem_read_block(orbi->fwdev, (void *)orbi, /*spd*/FWSPD_S400,
orbi->data_hi, orbi->data_lo, orbi->orb4.data_size*
sizeof(struct unrestricted_page_table_fmt),
(void *)orbi->page_table, sbp_targ_pt_done);
if (xfer != NULL)
return;
} else {
/*
* This is a CTIO for a page table we have
* already malloc'd, so just directly invoke
* the xfer function on the orbi.
*/
sbp_targ_xfer_pt(orbi);
return;
}
error:
orbi->ccb->ccb_h.status = CAM_RESRC_UNAVAIL;
if (debug)
printf("%s: free orbi->page_table %p due to xfer == NULL\n", __func__, orbi->page_table);
if (orbi->page_table != NULL) {
free(orbi->page_table, M_SBP_TARG);
orbi->page_table = NULL;
}
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);
if (debug)
printf("%s: free orbi %p\n", __func__, 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) {
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 ( orbi->orb4.data_size > ccb->csio.dxfer_len ) {
orbi->data_lo += ccb->csio.dxfer_len;
orbi->orb4.data_size -= ccb->csio.dxfer_len;
}
}
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->transport = XPORT_SPI; /* FIXME add XPORT_FW type to cam */
cpi->hba_misc = PIM_NOBUSRESET | PIM_NOBUSRESET;
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;
}
#ifdef CAM_NEW_TRAN_CODE
case XPT_SET_TRAN_SETTINGS:
ccb->ccb_h.status = CAM_REQ_INVALID;
xpt_done(ccb);
break;
case XPT_GET_TRAN_SETTINGS:
{
struct ccb_trans_settings *cts = &ccb->cts;
struct ccb_trans_settings_scsi *scsi =
&cts->proto_specific.scsi;
struct ccb_trans_settings_spi *spi =
&cts->xport_specific.spi;
cts->protocol = PROTO_SCSI;
cts->protocol_version = SCSI_REV_2;
cts->transport = XPORT_FW; /* should have a FireWire */
cts->transport_version = 2;
spi->valid = CTS_SPI_VALID_DISC;
spi->flags = CTS_SPI_FLAGS_DISC_ENB;
scsi->valid = CTS_SCSI_VALID_TQ;
scsi->flags = CTS_SCSI_FLAGS_TAG_ENB;
#if 0
printf("%s:%d:%d XPT_GET_TRAN_SETTINGS:\n",
device_get_nameunit(sc->fd.dev),
ccb->ccb_h.target_id, ccb->ccb_h.target_lun);
#endif
cts->ccb_h.status = CAM_REQ_CMP;
xpt_done(ccb);
break;
}
#endif
default:
printf("%s: unknown function 0x%x\n",
__func__, ccb->ccb_h.func_code);
ccb->ccb_h.status = CAM_PROVIDE_FAIL;
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 = MSG_SIMPLE_TASK;
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*/FWSPD_S400, 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 & (1U << 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);
orbi->page_table = NULL;
switch (mode) {
case FETCH_MGM:
fwmem_read_block(fwdev, (void *)orbi, /*spd*/FWSPD_S400, 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*/FWSPD_S400, 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*/FWSPD_S400, 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 = FWSPD_S400;
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);
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