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freebsd-nq/sys/dev/isp/isp_target.c
Poul-Henning Kamp a0fb4cf18d Remove unused variables 
Add /* FALLTHROUGH */

Found by:       FlexeLint
2003-05-31 19:49:49 +00:00

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/* $FreeBSD$ */
/*
* Machine and OS Independent Target Mode Code for the Qlogic SCSI/FC adapters.
*
* Copyright (c) 1999, 2000, 2001 by Matthew Jacob
* All rights reserved.
* mjacob@feral.com
*
* 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 immediately at the beginning of the file, without modification,
* this list of conditions, and the following disclaimer.
* 2. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*/
/*
* Bug fixes gratefully acknowledged from:
* Oded Kedem <oded@kashya.com>
*/
/*
* Include header file appropriate for platform we're building on.
*/
#ifdef __NetBSD__
#include <dev/ic/isp_netbsd.h>
#endif
#ifdef __FreeBSD__
#include <dev/isp/isp_freebsd.h>
#endif
#ifdef __OpenBSD__
#include <dev/ic/isp_openbsd.h>
#endif
#ifdef __linux__
#include "isp_linux.h"
#endif
#ifdef ISP_TARGET_MODE
static const char atiocope[] =
"ATIO returned for lun %d because it was in the middle of Bus Device Reset "
"on bus %d";
static const char atior[] =
"ATIO returned on for lun %d on from IID %d because a Bus Reset occurred "
"on bus %d";
static void isp_got_msg(struct ispsoftc *, int, in_entry_t *);
static void isp_got_msg_fc(struct ispsoftc *, int, in_fcentry_t *);
static void isp_notify_ack(struct ispsoftc *, void *);
static void isp_handle_atio(struct ispsoftc *, at_entry_t *);
static void isp_handle_atio2(struct ispsoftc *, at2_entry_t *);
static void isp_handle_ctio(struct ispsoftc *, ct_entry_t *);
static void isp_handle_ctio2(struct ispsoftc *, ct2_entry_t *);
/*
* The Qlogic driver gets an interrupt to look at response queue entries.
* Some of these are status completions for initiatior mode commands, but
* if target mode is enabled, we get a whole wad of response queue entries
* to be handled here.
*
* Basically the split into 3 main groups: Lun Enable/Modification responses,
* SCSI Command processing, and Immediate Notification events.
*
* You start by writing a request queue entry to enable target mode (and
* establish some resource limitations which you can modify later).
* The f/w responds with a LUN ENABLE or LUN MODIFY response with
* the status of this action. If the enable was successful, you can expect...
*
* Response queue entries with SCSI commands encapsulate show up in an ATIO
* (Accept Target IO) type- sometimes with enough info to stop the command at
* this level. Ultimately the driver has to feed back to the f/w's request
* queue a sequence of CTIOs (continue target I/O) that describe data to
* be moved and/or status to be sent) and finally finishing with sending
* to the f/w's response queue an ATIO which then completes the handshake
* with the f/w for that command. There's a lot of variations on this theme,
* including flags you can set in the CTIO for the Qlogic 2X00 fibre channel
* cards that 'auto-replenish' the f/w's ATIO count, but this is the basic
* gist of it.
*
* The third group that can show up in the response queue are Immediate
* Notification events. These include things like notifications of SCSI bus
* resets, or Bus Device Reset messages or other messages received. This
* a classic oddbins area. It can get a little weird because you then turn
* around and acknowledge the Immediate Notify by writing an entry onto the
* request queue and then the f/w turns around and gives you an acknowledgement
* to *your* acknowledgement on the response queue (the idea being to let
* the f/w tell you when the event is *really* over I guess).
*
*/
/*
* A new response queue entry has arrived. The interrupt service code
* has already swizzled it into the platform dependent from canonical form.
*
* Because of the way this driver is designed, unfortunately most of the
* actual synchronization work has to be done in the platform specific
* code- we have no synchroniation primitives in the common code.
*/
int
isp_target_notify(struct ispsoftc *isp, void *vptr, u_int16_t *optrp)
{
u_int16_t status, seqid;
union {
at_entry_t *atiop;
at2_entry_t *at2iop;
ct_entry_t *ctiop;
ct2_entry_t *ct2iop;
lun_entry_t *lunenp;
in_entry_t *inotp;
in_fcentry_t *inot_fcp;
na_entry_t *nackp;
na_fcentry_t *nack_fcp;
isphdr_t *hp;
void * *vp;
#define atiop unp.atiop
#define at2iop unp.at2iop
#define ctiop unp.ctiop
#define ct2iop unp.ct2iop
#define lunenp unp.lunenp
#define inotp unp.inotp
#define inot_fcp unp.inot_fcp
#define nackp unp.nackp
#define nack_fcp unp.nack_fcp
#define hdrp unp.hp
} unp;
u_int8_t local[QENTRY_LEN];
int bus, type, rval = 1;
type = isp_get_response_type(isp, (isphdr_t *)vptr);
unp.vp = vptr;
ISP_TDQE(isp, "isp_target_notify", (int) *optrp, vptr);
switch(type) {
case RQSTYPE_ATIO:
isp_get_atio(isp, atiop, (at_entry_t *) local);
isp_handle_atio(isp, (at_entry_t *) local);
break;
case RQSTYPE_CTIO:
isp_get_ctio(isp, ctiop, (ct_entry_t *) local);
isp_handle_ctio(isp, (ct_entry_t *) local);
break;
case RQSTYPE_ATIO2:
isp_get_atio2(isp, at2iop, (at2_entry_t *) local);
isp_handle_atio2(isp, (at2_entry_t *) local);
break;
case RQSTYPE_CTIO2:
isp_get_ctio2(isp, ct2iop, (ct2_entry_t *) local);
isp_handle_ctio2(isp, (ct2_entry_t *) local);
break;
case RQSTYPE_ENABLE_LUN:
case RQSTYPE_MODIFY_LUN:
isp_get_enable_lun(isp, lunenp, (lun_entry_t *) local);
(void) isp_async(isp, ISPASYNC_TARGET_ACTION, local);
break;
case RQSTYPE_NOTIFY:
/*
* Either the ISP received a SCSI message it can't
* handle, or it's returning an Immed. Notify entry
* we sent. We can send Immed. Notify entries to
* increment the firmware's resource count for them
* (we set this initially in the Enable Lun entry).
*/
bus = 0;
if (IS_FC(isp)) {
isp_get_notify_fc(isp, inot_fcp, (in_fcentry_t *)local);
inot_fcp = (in_fcentry_t *) local;
status = inot_fcp->in_status;
seqid = inot_fcp->in_seqid;
} else {
isp_get_notify(isp, inotp, (in_entry_t *)local);
inotp = (in_entry_t *) local;
status = inotp->in_status & 0xff;
seqid = inotp->in_seqid;
if (IS_DUALBUS(isp)) {
bus = GET_BUS_VAL(inotp->in_iid);
SET_BUS_VAL(inotp->in_iid, 0);
}
}
isp_prt(isp, ISP_LOGTDEBUG0,
"Immediate Notify On Bus %d, status=0x%x seqid=0x%x",
bus, status, seqid);
/*
* ACK it right away.
*/
isp_notify_ack(isp, (status == IN_RESET)? NULL : local);
switch (status) {
case IN_RESET:
(void) isp_async(isp, ISPASYNC_BUS_RESET, &bus);
break;
case IN_MSG_RECEIVED:
case IN_IDE_RECEIVED:
if (IS_FC(isp)) {
isp_got_msg_fc(isp, bus, (in_fcentry_t *)local);
} else {
isp_got_msg(isp, bus, (in_entry_t *)local);
}
break;
case IN_RSRC_UNAVAIL:
isp_prt(isp, ISP_LOGWARN, "Firmware out of ATIOs");
break;
case IN_PORT_LOGOUT:
case IN_ABORT_TASK:
case IN_PORT_CHANGED:
case IN_GLOBAL_LOGO:
(void) isp_async(isp, ISPASYNC_TARGET_ACTION, &local);
break;
default:
isp_prt(isp, ISP_LOGERR,
"bad status (0x%x) in isp_target_notify", status);
break;
}
break;
case RQSTYPE_NOTIFY_ACK:
/*
* The ISP is acknowledging our acknowledgement of an
* Immediate Notify entry for some asynchronous event.
*/
if (IS_FC(isp)) {
isp_get_notify_ack_fc(isp, nack_fcp,
(na_fcentry_t *)local);
nack_fcp = (na_fcentry_t *)local;
isp_prt(isp, ISP_LOGTDEBUG1,
"Notify Ack status=0x%x seqid 0x%x",
nack_fcp->na_status, nack_fcp->na_seqid);
} else {
isp_get_notify_ack(isp, nackp, (na_entry_t *)local);
nackp = (na_entry_t *)local;
isp_prt(isp, ISP_LOGTDEBUG1,
"Notify Ack event 0x%x status=0x%x seqid 0x%x",
nackp->na_event, nackp->na_status, nackp->na_seqid);
}
break;
default:
isp_prt(isp, ISP_LOGERR,
"Unknown entry type 0x%x in isp_target_notify", type);
rval = 0;
break;
}
#undef atiop
#undef at2iop
#undef ctiop
#undef ct2iop
#undef lunenp
#undef inotp
#undef inot_fcp
#undef nackp
#undef nack_fcp
#undef hdrp
return (rval);
}
/*
* Toggle (on/off) target mode for bus/target/lun
*
* The caller has checked for overlap and legality.
*
* Note that not all of bus, target or lun can be paid attention to.
* Note also that this action will not be complete until the f/w writes
* response entry. The caller is responsible for synchronizing this.
*/
int
isp_lun_cmd(struct ispsoftc *isp, int cmd, int bus, int tgt, int lun,
int cmd_cnt, int inot_cnt, u_int32_t opaque)
{
lun_entry_t el;
u_int16_t nxti, optr;
void *outp;
MEMZERO(&el, sizeof (el));
if (IS_DUALBUS(isp)) {
el.le_rsvd = (bus & 0x1) << 7;
}
el.le_cmd_count = cmd_cnt;
el.le_in_count = inot_cnt;
if (cmd == RQSTYPE_ENABLE_LUN) {
if (IS_SCSI(isp)) {
el.le_flags = LUN_TQAE|LUN_DISAD;
el.le_cdb6len = 12;
el.le_cdb7len = 12;
}
} else if (cmd == -RQSTYPE_ENABLE_LUN) {
cmd = RQSTYPE_ENABLE_LUN;
el.le_cmd_count = 0;
el.le_in_count = 0;
} else if (cmd == -RQSTYPE_MODIFY_LUN) {
cmd = RQSTYPE_MODIFY_LUN;
el.le_ops = LUN_CCDECR | LUN_INDECR;
} else {
el.le_ops = LUN_CCINCR | LUN_ININCR;
}
el.le_header.rqs_entry_type = cmd;
el.le_header.rqs_entry_count = 1;
el.le_reserved = opaque;
if (IS_SCSI(isp)) {
el.le_tgt = tgt;
el.le_lun = lun;
} else if ((FCPARAM(isp)->isp_fwattr & ISP_FW_ATTR_SCCLUN) == 0) {
el.le_lun = lun;
}
el.le_timeout = 2;
if (isp_getrqentry(isp, &nxti, &optr, &outp)) {
isp_prt(isp, ISP_LOGERR,
"Request Queue Overflow in isp_lun_cmd");
return (-1);
}
ISP_TDQE(isp, "isp_lun_cmd", (int) optr, &el);
isp_put_enable_lun(isp, &el, outp);
ISP_ADD_REQUEST(isp, nxti);
return (0);
}
int
isp_target_put_entry(struct ispsoftc *isp, void *ap)
{
void *outp;
u_int16_t nxti, optr;
u_int8_t etype = ((isphdr_t *) ap)->rqs_entry_type;
if (isp_getrqentry(isp, &nxti, &optr, &outp)) {
isp_prt(isp, ISP_LOGWARN,
"Request Queue Overflow in isp_target_put_entry");
return (-1);
}
switch (etype) {
case RQSTYPE_ATIO:
isp_put_atio(isp, (at_entry_t *) ap, (at_entry_t *) outp);
break;
case RQSTYPE_ATIO2:
isp_put_atio2(isp, (at2_entry_t *) ap, (at2_entry_t *) outp);
break;
case RQSTYPE_CTIO:
isp_put_ctio(isp, (ct_entry_t *) ap, (ct_entry_t *) outp);
break;
case RQSTYPE_CTIO2:
isp_put_ctio2(isp, (ct2_entry_t *) ap, (ct2_entry_t *) outp);
break;
default:
isp_prt(isp, ISP_LOGERR,
"Unknown type 0x%x in isp_put_entry", etype);
return (-1);
}
ISP_TDQE(isp, "isp_target_put_entry", (int) optr, ap);;
ISP_ADD_REQUEST(isp, nxti);
return (0);
}
int
isp_target_put_atio(struct ispsoftc *isp, void *arg)
{
union {
at_entry_t _atio;
at2_entry_t _atio2;
} atun;
MEMZERO(&atun, sizeof atun);
if (IS_FC(isp)) {
at2_entry_t *aep = arg;
atun._atio2.at_header.rqs_entry_type = RQSTYPE_ATIO2;
atun._atio2.at_header.rqs_entry_count = 1;
if (FCPARAM(isp)->isp_fwattr & ISP_FW_ATTR_SCCLUN) {
atun._atio2.at_scclun = (u_int16_t) aep->at_scclun;
} else {
atun._atio2.at_lun = (u_int8_t) aep->at_lun;
}
atun._atio2.at_iid = aep->at_iid;
atun._atio2.at_rxid = aep->at_rxid;
atun._atio2.at_status = CT_OK;
} else {
at_entry_t *aep = arg;
atun._atio.at_header.rqs_entry_type = RQSTYPE_ATIO;
atun._atio.at_header.rqs_entry_count = 1;
atun._atio.at_handle = aep->at_handle;
atun._atio.at_iid = aep->at_iid;
atun._atio.at_tgt = aep->at_tgt;
atun._atio.at_lun = aep->at_lun;
atun._atio.at_tag_type = aep->at_tag_type;
atun._atio.at_tag_val = aep->at_tag_val;
atun._atio.at_status = (aep->at_flags & AT_TQAE);
atun._atio.at_status |= CT_OK;
}
return (isp_target_put_entry(isp, &atun));
}
/*
* Command completion- both for handling cases of no resources or
* no blackhole driver, or other cases where we have to, inline,
* finish the command sanely, or for normal command completion.
*
* The 'completion' code value has the scsi status byte in the low 8 bits.
* If status is a CHECK CONDITION and bit 8 is nonzero, then bits 12..15 have
* the sense key and bits 16..23 have the ASCQ and bits 24..31 have the ASC
* values.
*
* NB: the key, asc, ascq, cannot be used for parallel SCSI as it doesn't
* NB: inline SCSI sense reporting. As such, we lose this information. XXX.
*
* For both parallel && fibre channel, we use the feature that does
* an automatic resource autoreplenish so we don't have then later do
* put of an atio to replenish the f/w's resource count.
*/
int
isp_endcmd(struct ispsoftc *isp, void *arg, u_int32_t code, u_int16_t hdl)
{
int sts;
union {
ct_entry_t _ctio;
ct2_entry_t _ctio2;
} un;
MEMZERO(&un, sizeof un);
sts = code & 0xff;
if (IS_FC(isp)) {
at2_entry_t *aep = arg;
ct2_entry_t *cto = &un._ctio2;
cto->ct_header.rqs_entry_type = RQSTYPE_CTIO2;
cto->ct_header.rqs_entry_count = 1;
cto->ct_iid = aep->at_iid;
if ((FCPARAM(isp)->isp_fwattr & ISP_FW_ATTR_SCCLUN) == 0) {
cto->ct_lun = aep->at_lun;
}
cto->ct_rxid = aep->at_rxid;
cto->rsp.m1.ct_scsi_status = sts & 0xff;
cto->ct_flags = CT2_SENDSTATUS | CT2_NO_DATA | CT2_FLAG_MODE1;
if (hdl == 0) {
cto->ct_flags |= CT2_CCINCR;
}
if (aep->at_datalen) {
cto->ct_resid = aep->at_datalen;
cto->rsp.m1.ct_scsi_status |= CT2_DATA_UNDER;
}
if ((sts & 0xff) == SCSI_CHECK && (sts & ECMD_SVALID)) {
cto->rsp.m1.ct_resp[0] = 0xf0;
cto->rsp.m1.ct_resp[2] = (code >> 12) & 0xf;
cto->rsp.m1.ct_resp[7] = 8;
cto->rsp.m1.ct_resp[12] = (code >> 24) & 0xff;
cto->rsp.m1.ct_resp[13] = (code >> 16) & 0xff;
cto->rsp.m1.ct_senselen = 16;
cto->rsp.m1.ct_scsi_status |= CT2_SNSLEN_VALID;
}
cto->ct_syshandle = hdl;
} else {
at_entry_t *aep = arg;
ct_entry_t *cto = &un._ctio;
cto->ct_header.rqs_entry_type = RQSTYPE_CTIO;
cto->ct_header.rqs_entry_count = 1;
cto->ct_fwhandle = aep->at_handle;
cto->ct_iid = aep->at_iid;
cto->ct_tgt = aep->at_tgt;
cto->ct_lun = aep->at_lun;
cto->ct_tag_type = aep->at_tag_type;
cto->ct_tag_val = aep->at_tag_val;
if (aep->at_flags & AT_TQAE) {
cto->ct_flags |= CT_TQAE;
}
cto->ct_flags = CT_SENDSTATUS | CT_NO_DATA;
if (hdl == 0) {
cto->ct_flags |= CT_CCINCR;
}
cto->ct_scsi_status = sts;
cto->ct_syshandle = hdl;
}
return (isp_target_put_entry(isp, &un));
}
int
isp_target_async(struct ispsoftc *isp, int bus, int event)
{
tmd_event_t evt;
tmd_msg_t msg;
switch (event) {
/*
* These three we handle here to propagate an effective bus reset
* upstream, but these do not require any immediate notify actions
* so we return when done.
*/
case ASYNC_LIP_F8:
case ASYNC_LIP_OCCURRED:
case ASYNC_LOOP_UP:
case ASYNC_LOOP_DOWN:
case ASYNC_LOOP_RESET:
case ASYNC_PTPMODE:
/*
* These don't require any immediate notify actions. We used
* treat them like SCSI Bus Resets, but that was just plain
* wrong. Let the normal CTIO completion report what occurred.
*/
return (0);
case ASYNC_BUS_RESET:
case ASYNC_TIMEOUT_RESET:
if (IS_FC(isp)) {
return (0); /* we'll be getting an inotify instead */
}
evt.ev_bus = bus;
evt.ev_event = event;
(void) isp_async(isp, ISPASYNC_TARGET_EVENT, &evt);
break;
case ASYNC_DEVICE_RESET:
/*
* Bus Device Reset resets a specific target, so
* we pass this as a synthesized message.
*/
MEMZERO(&msg, sizeof msg);
if (IS_FC(isp)) {
msg.nt_iid = FCPARAM(isp)->isp_loopid;
} else {
msg.nt_iid = SDPARAM(isp)->isp_initiator_id;
}
msg.nt_bus = bus;
msg.nt_msg[0] = MSG_BUS_DEV_RESET;
(void) isp_async(isp, ISPASYNC_TARGET_MESSAGE, &msg);
break;
default:
isp_prt(isp, ISP_LOGERR,
"isp_target_async: unknown event 0x%x", event);
break;
}
if (isp->isp_state == ISP_RUNSTATE)
isp_notify_ack(isp, NULL);
return(0);
}
/*
* Process a received message.
* The ISP firmware can handle most messages, there are only
* a few that we need to deal with:
* - abort: clean up the current command
* - abort tag and clear queue
*/
static void
isp_got_msg(struct ispsoftc *isp, int bus, in_entry_t *inp)
{
u_int8_t status = inp->in_status & ~QLTM_SVALID;
if (status == IN_IDE_RECEIVED || status == IN_MSG_RECEIVED) {
tmd_msg_t msg;
MEMZERO(&msg, sizeof (msg));
msg.nt_bus = bus;
msg.nt_iid = inp->in_iid;
msg.nt_tgt = inp->in_tgt;
msg.nt_lun = inp->in_lun;
msg.nt_tagtype = inp->in_tag_type;
msg.nt_tagval = inp->in_tag_val;
MEMCPY(msg.nt_msg, inp->in_msg, IN_MSGLEN);
(void) isp_async(isp, ISPASYNC_TARGET_MESSAGE, &msg);
} else {
isp_prt(isp, ISP_LOGERR,
"unknown immediate notify status 0x%x", inp->in_status);
}
}
/*
* Synthesize a message from the task management flags in a FCP_CMND_IU.
*/
static void
isp_got_msg_fc(struct ispsoftc *isp, int bus, in_fcentry_t *inp)
{
int lun;
static const char f1[] = "%s from iid %d lun %d seq 0x%x";
static const char f2[] =
"unknown %s 0x%x lun %d iid %d task flags 0x%x seq 0x%x\n";
if (FCPARAM(isp)->isp_fwattr & ISP_FW_ATTR_SCCLUN) {
lun = inp->in_scclun;
} else {
lun = inp->in_lun;
}
if (inp->in_status != IN_MSG_RECEIVED) {
isp_prt(isp, ISP_LOGINFO, f2, "immediate notify status",
inp->in_status, lun, inp->in_iid,
inp->in_task_flags, inp->in_seqid);
} else {
tmd_msg_t msg;
MEMZERO(&msg, sizeof (msg));
msg.nt_bus = bus;
msg.nt_iid = inp->in_iid;
msg.nt_tagval = inp->in_seqid;
msg.nt_lun = lun;
if (inp->in_task_flags & TASK_FLAGS_ABORT_TASK) {
isp_prt(isp, ISP_LOGINFO, f1, "ABORT TASK",
inp->in_iid, lun, inp->in_seqid);
msg.nt_msg[0] = MSG_ABORT_TAG;
} else if (inp->in_task_flags & TASK_FLAGS_CLEAR_TASK_SET) {
isp_prt(isp, ISP_LOGINFO, f1, "CLEAR TASK SET",
inp->in_iid, lun, inp->in_seqid);
msg.nt_msg[0] = MSG_CLEAR_QUEUE;
} else if (inp->in_task_flags & TASK_FLAGS_TARGET_RESET) {
isp_prt(isp, ISP_LOGINFO, f1, "TARGET RESET",
inp->in_iid, lun, inp->in_seqid);
msg.nt_msg[0] = MSG_BUS_DEV_RESET;
} else if (inp->in_task_flags & TASK_FLAGS_CLEAR_ACA) {
isp_prt(isp, ISP_LOGINFO, f1, "CLEAR ACA",
inp->in_iid, lun, inp->in_seqid);
/* ???? */
msg.nt_msg[0] = MSG_REL_RECOVERY;
} else if (inp->in_task_flags & TASK_FLAGS_TERMINATE_TASK) {
isp_prt(isp, ISP_LOGINFO, f1, "TERMINATE TASK",
inp->in_iid, lun, inp->in_seqid);
msg.nt_msg[0] = MSG_TERM_IO_PROC;
} else {
isp_prt(isp, ISP_LOGWARN, f2, "task flag",
inp->in_status, lun, inp->in_iid,
inp->in_task_flags, inp->in_seqid);
}
if (msg.nt_msg[0]) {
(void) isp_async(isp, ISPASYNC_TARGET_MESSAGE, &msg);
}
}
}
static void
isp_notify_ack(struct ispsoftc *isp, void *arg)
{
char storage[QENTRY_LEN];
u_int16_t nxti, optr;
void *outp;
if (isp_getrqentry(isp, &nxti, &optr, &outp)) {
isp_prt(isp, ISP_LOGWARN,
"Request Queue Overflow For isp_notify_ack");
return;
}
MEMZERO(storage, QENTRY_LEN);
if (IS_FC(isp)) {
na_fcentry_t *na = (na_fcentry_t *) storage;
if (arg) {
in_fcentry_t *inp = arg;
MEMCPY(storage, arg, sizeof (isphdr_t));
na->na_iid = inp->in_iid;
if (FCPARAM(isp)->isp_fwattr & ISP_FW_ATTR_SCCLUN) {
na->na_lun = inp->in_scclun;
} else {
na->na_lun = inp->in_lun;
}
na->na_task_flags = inp->in_task_flags;
na->na_seqid = inp->in_seqid;
na->na_flags = NAFC_RCOUNT;
na->na_status = inp->in_status;
if (inp->in_status == IN_RESET) {
na->na_flags |= NAFC_RST_CLRD;
}
} else {
na->na_flags = NAFC_RST_CLRD;
}
na->na_header.rqs_entry_type = RQSTYPE_NOTIFY_ACK;
na->na_header.rqs_entry_count = 1;
isp_put_notify_ack_fc(isp, na, (na_fcentry_t *)outp);
} else {
na_entry_t *na = (na_entry_t *) storage;
if (arg) {
in_entry_t *inp = arg;
MEMCPY(storage, arg, sizeof (isphdr_t));
na->na_iid = inp->in_iid;
na->na_lun = inp->in_lun;
na->na_tgt = inp->in_tgt;
na->na_seqid = inp->in_seqid;
if (inp->in_status == IN_RESET) {
na->na_event = NA_RST_CLRD;
}
} else {
na->na_event = NA_RST_CLRD;
}
na->na_header.rqs_entry_type = RQSTYPE_NOTIFY_ACK;
na->na_header.rqs_entry_count = 1;
isp_put_notify_ack(isp, na, (na_entry_t *)outp);
}
ISP_TDQE(isp, "isp_notify_ack", (int) optr, storage);
ISP_ADD_REQUEST(isp, nxti);
}
static void
isp_handle_atio(struct ispsoftc *isp, at_entry_t *aep)
{
int lun;
lun = aep->at_lun;
/*
* The firmware status (except for the QLTM_SVALID bit) indicates
* why this ATIO was sent to us.
*
* If QLTM_SVALID is set, the firware has recommended Sense Data.
*
* If the DISCONNECTS DISABLED bit is set in the flags field,
* we're still connected on the SCSI bus - i.e. the initiator
* did not set DiscPriv in the identify message. We don't care
* about this so it's ignored.
*/
switch(aep->at_status & ~QLTM_SVALID) {
case AT_PATH_INVALID:
/*
* ATIO rejected by the firmware due to disabled lun.
*/
isp_prt(isp, ISP_LOGERR,
"rejected ATIO for disabled lun %d", lun);
break;
case AT_NOCAP:
/*
* Requested Capability not available
* We sent an ATIO that overflowed the firmware's
* command resource count.
*/
isp_prt(isp, ISP_LOGERR,
"rejected ATIO for lun %d because of command count"
" overflow", lun);
break;
case AT_BDR_MSG:
/*
* If we send an ATIO to the firmware to increment
* its command resource count, and the firmware is
* recovering from a Bus Device Reset, it returns
* the ATIO with this status. We set the command
* resource count in the Enable Lun entry and do
* not increment it. Therefore we should never get
* this status here.
*/
isp_prt(isp, ISP_LOGERR, atiocope, lun,
GET_BUS_VAL(aep->at_iid));
break;
case AT_CDB: /* Got a CDB */
case AT_PHASE_ERROR: /* Bus Phase Sequence Error */
/*
* Punt to platform specific layer.
*/
(void) isp_async(isp, ISPASYNC_TARGET_ACTION, aep);
break;
case AT_RESET:
/*
* A bus reset came along and blew away this command. Why
* they do this in addition the async event code stuff,
* I dunno.
*
* Ignore it because the async event will clear things
* up for us.
*/
isp_prt(isp, ISP_LOGWARN, atior, lun,
GET_IID_VAL(aep->at_iid), GET_BUS_VAL(aep->at_iid));
break;
default:
isp_prt(isp, ISP_LOGERR,
"Unknown ATIO status 0x%x from initiator %d for lun %d",
aep->at_status, aep->at_iid, lun);
(void) isp_target_put_atio(isp, aep);
break;
}
}
static void
isp_handle_atio2(struct ispsoftc *isp, at2_entry_t *aep)
{
int lun;
if (FCPARAM(isp)->isp_fwattr & ISP_FW_ATTR_SCCLUN) {
lun = aep->at_scclun;
} else {
lun = aep->at_lun;
}
/*
* The firmware status (except for the QLTM_SVALID bit) indicates
* why this ATIO was sent to us.
*
* If QLTM_SVALID is set, the firware has recommended Sense Data.
*
* If the DISCONNECTS DISABLED bit is set in the flags field,
* we're still connected on the SCSI bus - i.e. the initiator
* did not set DiscPriv in the identify message. We don't care
* about this so it's ignored.
*/
switch(aep->at_status & ~QLTM_SVALID) {
case AT_PATH_INVALID:
/*
* ATIO rejected by the firmware due to disabled lun.
*/
isp_prt(isp, ISP_LOGERR,
"rejected ATIO2 for disabled lun %d", lun);
break;
case AT_NOCAP:
/*
* Requested Capability not available
* We sent an ATIO that overflowed the firmware's
* command resource count.
*/
isp_prt(isp, ISP_LOGERR,
"rejected ATIO2 for lun %d- command count overflow", lun);
break;
case AT_BDR_MSG:
/*
* If we send an ATIO to the firmware to increment
* its command resource count, and the firmware is
* recovering from a Bus Device Reset, it returns
* the ATIO with this status. We set the command
* resource count in the Enable Lun entry and no
* not increment it. Therefore we should never get
* this status here.
*/
isp_prt(isp, ISP_LOGERR, atiocope, lun, 0);
break;
case AT_CDB: /* Got a CDB */
/*
* Punt to platform specific layer.
*/
(void) isp_async(isp, ISPASYNC_TARGET_ACTION, aep);
break;
case AT_RESET:
/*
* A bus reset came along an blew away this command. Why
* they do this in addition the async event code stuff,
* I dunno.
*
* Ignore it because the async event will clear things
* up for us.
*/
isp_prt(isp, ISP_LOGERR, atior, lun, aep->at_iid, 0);
break;
default:
isp_prt(isp, ISP_LOGERR,
"Unknown ATIO2 status 0x%x from initiator %d for lun %d",
aep->at_status, aep->at_iid, lun);
(void) isp_target_put_atio(isp, aep);
break;
}
}
static void
isp_handle_ctio(struct ispsoftc *isp, ct_entry_t *ct)
{
void *xs;
int pl = ISP_LOGTDEBUG2;
char *fmsg = NULL;
if (ct->ct_syshandle) {
xs = isp_find_xs(isp, ct->ct_syshandle);
if (xs == NULL)
pl = ISP_LOGALL;
} else {
xs = NULL;
}
switch(ct->ct_status & ~QLTM_SVALID) {
case CT_OK:
/*
* There are generally 3 possibilities as to why we'd get
* this condition:
* We disconnected after receiving a CDB.
* We sent or received data.
* We sent status & command complete.
*/
if (ct->ct_flags & CT_SENDSTATUS) {
break;
} else if ((ct->ct_flags & CT_DATAMASK) == CT_NO_DATA) {
/*
* Nothing to do in this case.
*/
isp_prt(isp, pl, "CTIO- iid %d disconnected OK",
ct->ct_iid);
return;
}
break;
case CT_BDR_MSG:
/*
* Bus Device Reset message received or the SCSI Bus has
* been Reset; the firmware has gone to Bus Free.
*
* The firmware generates an async mailbox interupt to
* notify us of this and returns outstanding CTIOs with this
* status. These CTIOs are handled in that same way as
* CT_ABORTED ones, so just fall through here.
*/
fmsg = "Bus Device Reset";
/*FALLTHROUGH*/
case CT_RESET:
if (fmsg == NULL)
fmsg = "Bus Reset";
/*FALLTHROUGH*/
case CT_ABORTED:
/*
* When an Abort message is received the firmware goes to
* Bus Free and returns all outstanding CTIOs with the status
* set, then sends us an Immediate Notify entry.
*/
if (fmsg == NULL)
fmsg = "ABORT TAG message sent by Initiator";
isp_prt(isp, ISP_LOGWARN, "CTIO destroyed by %s", fmsg);
break;
case CT_INVAL:
/*
* CTIO rejected by the firmware due to disabled lun.
* "Cannot Happen".
*/
isp_prt(isp, ISP_LOGERR,
"Firmware rejected CTIO for disabled lun %d",
ct->ct_lun);
break;
case CT_NOPATH:
/*
* CTIO rejected by the firmware due "no path for the
* nondisconnecting nexus specified". This means that
* we tried to access the bus while a non-disconnecting
* command is in process.
*/
isp_prt(isp, ISP_LOGERR,
"Firmware rejected CTIO for bad nexus %d/%d/%d",
ct->ct_iid, ct->ct_tgt, ct->ct_lun);
break;
case CT_RSELTMO:
fmsg = "Reselection";
/*FALLTHROUGH*/
case CT_TIMEOUT:
if (fmsg == NULL)
fmsg = "Command";
isp_prt(isp, ISP_LOGERR, "Firmware timed out on %s", fmsg);
break;
case CT_PANIC:
if (fmsg == NULL)
fmsg = "Unrecoverable Error";
/*FALLTHROUGH*/
case CT_ERR:
if (fmsg == NULL)
fmsg = "Completed with Error";
/*FALLTHROUGH*/
case CT_PHASE_ERROR:
if (fmsg == NULL)
fmsg = "Phase Sequence Error";
/*FALLTHROUGH*/
case CT_TERMINATED:
if (fmsg == NULL)
fmsg = "terminated by TERMINATE TRANSFER";
/*FALLTHROUGH*/
case CT_NOACK:
if (fmsg == NULL)
fmsg = "unacknowledged Immediate Notify pending";
isp_prt(isp, ISP_LOGERR, "CTIO returned by f/w- %s", fmsg);
break;
default:
isp_prt(isp, ISP_LOGERR, "Unknown CTIO status 0x%x",
ct->ct_status & ~QLTM_SVALID);
break;
}
if (xs == NULL) {
/*
* There may be more than one CTIO for a data transfer,
* or this may be a status CTIO we're not monitoring.
*
* The assumption is that they'll all be returned in the
* order we got them.
*/
if (ct->ct_syshandle == 0) {
if ((ct->ct_flags & CT_SENDSTATUS) == 0) {
isp_prt(isp, pl,
"intermediate CTIO completed ok");
} else {
isp_prt(isp, pl,
"unmonitored CTIO completed ok");
}
} else {
isp_prt(isp, pl,
"NO xs for CTIO (handle 0x%x) status 0x%x",
ct->ct_syshandle, ct->ct_status & ~QLTM_SVALID);
}
} else {
/*
* Final CTIO completed. Release DMA resources and
* notify platform dependent layers.
*/
if ((ct->ct_flags & CT_DATAMASK) != CT_NO_DATA) {
ISP_DMAFREE(isp, xs, ct->ct_syshandle);
}
isp_prt(isp, pl, "final CTIO complete");
/*
* The platform layer will destroy the handle if appropriate.
*/
(void) isp_async(isp, ISPASYNC_TARGET_ACTION, ct);
}
}
static void
isp_handle_ctio2(struct ispsoftc *isp, ct2_entry_t *ct)
{
XS_T *xs;
int pl = ISP_LOGTDEBUG2;
char *fmsg = NULL;
if (ct->ct_syshandle) {
xs = isp_find_xs(isp, ct->ct_syshandle);
if (xs == NULL)
pl = ISP_LOGALL;
} else {
xs = NULL;
}
switch(ct->ct_status & ~QLTM_SVALID) {
case CT_BUS_ERROR:
isp_prt(isp, ISP_LOGERR, "PCI DMA Bus Error");
/* FALL Through */
case CT_DATA_OVER:
case CT_DATA_UNDER:
case CT_OK:
/*
* There are generally 2 possibilities as to why we'd get
* this condition:
* We sent or received data.
* We sent status & command complete.
*/
break;
case CT_BDR_MSG:
/*
* Target Reset function received.
*
* The firmware generates an async mailbox interupt to
* notify us of this and returns outstanding CTIOs with this
* status. These CTIOs are handled in that same way as
* CT_ABORTED ones, so just fall through here.
*/
fmsg = "TARGET RESET Task Management Function Received";
/*FALLTHROUGH*/
case CT_RESET:
if (fmsg == NULL)
fmsg = "LIP Reset";
/*FALLTHROUGH*/
case CT_ABORTED:
/*
* When an Abort message is received the firmware goes to
* Bus Free and returns all outstanding CTIOs with the status
* set, then sends us an Immediate Notify entry.
*/
if (fmsg == NULL)
fmsg = "ABORT Task Management Function Received";
isp_prt(isp, ISP_LOGERR, "CTIO2 destroyed by %s", fmsg);
break;
case CT_INVAL:
/*
* CTIO rejected by the firmware - invalid data direction.
*/
isp_prt(isp, ISP_LOGERR, "CTIO2 had wrong data directiond");
break;
case CT_RSELTMO:
fmsg = "failure to reconnect to initiator";
/*FALLTHROUGH*/
case CT_TIMEOUT:
if (fmsg == NULL)
fmsg = "command";
isp_prt(isp, ISP_LOGERR, "Firmware timed out on %s", fmsg);
break;
case CT_ERR:
fmsg = "Completed with Error";
/*FALLTHROUGH*/
case CT_LOGOUT:
if (fmsg == NULL)
fmsg = "Port Logout";
/*FALLTHROUGH*/
case CT_PORTNOTAVAIL:
if (fmsg == NULL)
fmsg = "Port not available";
/*FALLTHROUGH*/
case CT_PORTCHANGED:
if (fmsg == NULL)
fmsg = "Port Changed";
/*FALLTHROUGH*/
case CT_NOACK:
if (fmsg == NULL)
fmsg = "unacknowledged Immediate Notify pending";
isp_prt(isp, ISP_LOGERR, "CTIO returned by f/w- %s", fmsg);
break;
case CT_INVRXID:
/*
* CTIO rejected by the firmware because an invalid RX_ID.
* Just print a message.
*/
isp_prt(isp, ISP_LOGERR,
"CTIO2 completed with Invalid RX_ID 0x%x", ct->ct_rxid);
break;
default:
isp_prt(isp, ISP_LOGERR, "Unknown CTIO2 status 0x%x",
ct->ct_status & ~QLTM_SVALID);
break;
}
if (xs == NULL) {
/*
* There may be more than one CTIO for a data transfer,
* or this may be a status CTIO we're not monitoring.
*
* The assumption is that they'll all be returned in the
* order we got them.
*/
if (ct->ct_syshandle == 0) {
if ((ct->ct_flags & CT_SENDSTATUS) == 0) {
isp_prt(isp, pl,
"intermediate CTIO completed ok");
} else {
isp_prt(isp, pl,
"unmonitored CTIO completed ok");
}
} else {
isp_prt(isp, pl,
"NO xs for CTIO (handle 0x%x) status 0x%x",
ct->ct_syshandle, ct->ct_status & ~QLTM_SVALID);
}
} else {
if ((ct->ct_flags & CT2_DATAMASK) != CT2_NO_DATA) {
ISP_DMAFREE(isp, xs, ct->ct_syshandle);
}
if (ct->ct_flags & CT_SENDSTATUS) {
/*
* Sent status and command complete.
*
* We're now really done with this command, so we
* punt to the platform dependent layers because
* only there can we do the appropriate command
* complete thread synchronization.
*/
isp_prt(isp, pl, "status CTIO complete");
} else {
/*
* Final CTIO completed. Release DMA resources and
* notify platform dependent layers.
*/
isp_prt(isp, pl, "data CTIO complete");
}
(void) isp_async(isp, ISPASYNC_TARGET_ACTION, ct);
/*
* The platform layer will destroy the handle if appropriate.
*/
}
}
#endif
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