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freebsd-skq/sys/dev/firewire/firewire.c
simokawa 2d4780fd3a - Use moderate gap counts listed in IEEE1394a. 
- Simplify and correct the bus manager election process.
- Check link_active when choosing cycle master.
- Fix location of the cmr bit.

Approved by: re (scottl)
2003-05-11 10:32:20 +00:00

2085 lines
49 KiB
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/*
* Copyright (c) 2003 Hidetoshi Shimokawa
* Copyright (c) 1998-2002 Katsushi Kobayashi and 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 acknowledgement as bellow:
*
* This product includes software developed by K. Kobayashi and H. Shimokawa
*
* 4. 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 ``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 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/systm.h>
#include <sys/types.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/kernel.h>
#include <sys/malloc.h>
#include <sys/conf.h>
#include <sys/sysctl.h>
#include <machine/cpufunc.h> /* for rdtsc proto for clock.h below */
#include <machine/clock.h>
#include <sys/bus.h> /* used by smbus and newbus */
#include <machine/bus.h>
#include <dev/firewire/firewire.h>
#include <dev/firewire/firewirereg.h>
#include <dev/firewire/fwmem.h>
#include <dev/firewire/iec13213.h>
#include <dev/firewire/iec68113.h>
int firewire_debug=0, try_bmr=1;
SYSCTL_INT(_debug, OID_AUTO, firewire_debug, CTLFLAG_RW, &firewire_debug, 0,
"FireWire driver debug flag");
SYSCTL_NODE(_hw, OID_AUTO, firewire, CTLFLAG_RD, 0, "FireWire Subsystem");
SYSCTL_INT(_hw_firewire, OID_AUTO, try_bmr, CTLFLAG_RW, &try_bmr, 0,
"Try to be a bus manager");
MALLOC_DEFINE(M_FW, "firewire", "FireWire");
MALLOC_DEFINE(M_FWXFER, "fw_xfer", "XFER/FireWire");
#define FW_MAXASYRTY 4
#define FW_MAXDEVRCNT 4
devclass_t firewire_devclass;
static int firewire_match __P((device_t));
static int firewire_attach __P((device_t));
static int firewire_detach __P((device_t));
#if 0
static int firewire_shutdown __P((device_t));
#endif
static device_t firewire_add_child __P((device_t, int, const char *, int));
static void fw_try_bmr __P((void *));
static void fw_try_bmr_callback __P((struct fw_xfer *));
static void fw_asystart __P((struct fw_xfer *));
static int fw_get_tlabel __P((struct firewire_comm *, struct fw_xfer *));
static void fw_bus_probe __P((struct firewire_comm *));
static void fw_bus_explore __P((struct firewire_comm *));
static void fw_bus_explore_callback __P((struct fw_xfer *));
static void fw_attach_dev __P((struct firewire_comm *));
#ifdef FW_VMACCESS
static void fw_vmaccess __P((struct fw_xfer *));
#endif
struct fw_xfer *asyreqq __P((struct firewire_comm *, u_int8_t, u_int8_t, u_int8_t,
u_int32_t, u_int32_t, void (*)__P((struct fw_xfer *))));
static int fw_bmr __P((struct firewire_comm *));
static device_method_t firewire_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, firewire_match),
DEVMETHOD(device_attach, firewire_attach),
DEVMETHOD(device_detach, firewire_detach),
DEVMETHOD(device_suspend, bus_generic_suspend),
DEVMETHOD(device_resume, bus_generic_resume),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
/* Bus interface */
DEVMETHOD(bus_add_child, firewire_add_child),
DEVMETHOD(bus_print_child, bus_generic_print_child),
{ 0, 0 }
};
char linkspeed[7][0x10]={"S100","S200","S400","S800","S1600","S3200","Unknown"};
/* IEEE-1394a Table C-2 Gap count as a function of hops*/
#define MAX_GAPHOP 15
u_int gap_cnt[] = { 5, 5, 7, 8, 10, 13, 16, 18,
21, 24, 26, 29, 32, 35, 37, 40};
extern struct cdevsw firewire_cdevsw;
static driver_t firewire_driver = {
"firewire",
firewire_methods,
sizeof(struct firewire_softc),
};
/*
* Lookup fwdev by node id.
*/
struct fw_device *
fw_noderesolve_nodeid(struct firewire_comm *fc, int dst)
{
struct fw_device *fwdev;
int s;
s = splfw();
STAILQ_FOREACH(fwdev, &fc->devices, link)
if (fwdev->dst == dst)
break;
splx(s);
if(fwdev == NULL) return NULL;
if(fwdev->status == FWDEVINVAL) return NULL;
return fwdev;
}
/*
* Lookup fwdev by EUI64.
*/
struct fw_device *
fw_noderesolve_eui64(struct firewire_comm *fc, struct fw_eui64 *eui)
{
struct fw_device *fwdev;
int s;
s = splfw();
STAILQ_FOREACH(fwdev, &fc->devices, link)
if (FW_EUI64_EQUAL(fwdev->eui, *eui))
break;
splx(s);
if(fwdev == NULL) return NULL;
if(fwdev->status == FWDEVINVAL) return NULL;
return fwdev;
}
/*
* Async. request procedure for userland application.
*/
int
fw_asyreq(struct firewire_comm *fc, int sub, struct fw_xfer *xfer)
{
int err = 0;
struct fw_xferq *xferq;
int tl = 0, len;
struct fw_pkt *fp;
int tcode;
struct tcode_info *info;
if(xfer == NULL) return EINVAL;
if(xfer->send.len > MAXREC(fc->maxrec)){
printf("send.len > maxrec\n");
return EINVAL;
}
if(xfer->act.hand == NULL){
printf("act.hand == NULL\n");
return EINVAL;
}
fp = (struct fw_pkt *)xfer->send.buf;
tcode = fp->mode.common.tcode & 0xf;
info = &fc->tcode[tcode];
if (info->flag == 0) {
printf("invalid tcode=%d\n", tcode);
return EINVAL;
}
if (info->flag & FWTI_REQ)
xferq = fc->atq;
else
xferq = fc->ats;
len = info->hdr_len;
if (info->flag & FWTI_BLOCK_STR)
len += fp->mode.stream.len;
else if (info->flag & FWTI_BLOCK_ASY)
len += fp->mode.rresb.len;
if( len > xfer->send.len ){
printf("len(%d) > send.len(%d) (tcode=%d)\n",
len, xfer->send.len, tcode);
return EINVAL;
}
xfer->send.len = len;
if(xferq->start == NULL){
printf("xferq->start == NULL\n");
return EINVAL;
}
if(!(xferq->queued < xferq->maxq)){
device_printf(fc->bdev, "Discard a packet (queued=%d)\n",
xferq->queued);
return EINVAL;
}
if (info->flag & FWTI_TLABEL) {
if((tl = fw_get_tlabel(fc, xfer)) == -1 )
return EIO;
fp->mode.hdr.tlrt = tl << 2;
}
xfer->tl = tl;
xfer->resp = 0;
xfer->fc = fc;
xfer->q = xferq;
xfer->retry_req = fw_asybusy;
fw_asystart(xfer);
return err;
}
/*
* Wakeup blocked process.
*/
void
fw_asy_callback(struct fw_xfer *xfer){
wakeup(xfer);
return;
}
/*
* Postpone to later retry.
*/
void fw_asybusy(struct fw_xfer *xfer){
printf("fw_asybusy\n");
/*
xfer->ch = timeout((timeout_t *)fw_asystart, (void *)xfer, 20000);
*/
DELAY(20000);
fw_asystart(xfer);
return;
}
/*
* Async. request with given xfer structure.
*/
static void
fw_asystart(struct fw_xfer *xfer)
{
struct firewire_comm *fc = xfer->fc;
int s;
if(xfer->retry++ >= fc->max_asyretry){
device_printf(fc->bdev, "max_asyretry exceeded\n");
xfer->resp = EBUSY;
xfer->state = FWXF_BUSY;
xfer->act.hand(xfer);
return;
}
#if 0 /* XXX allow bus explore packets only after bus rest */
if (fc->status < FWBUSEXPLORE) {
xfer->resp = EAGAIN;
xfer->state = FWXF_BUSY;
if (xfer->act.hand != NULL)
xfer->act.hand(xfer);
return;
}
#endif
s = splfw();
xfer->state = FWXF_INQ;
STAILQ_INSERT_TAIL(&xfer->q->q, xfer, link);
xfer->q->queued ++;
splx(s);
/* XXX just queue for mbuf */
if (xfer->mbuf == NULL)
xfer->q->start(fc);
return;
}
static int
firewire_match( device_t dev )
{
device_set_desc(dev, "IEEE1394(FireWire) bus");
return -140;
}
static void
firewire_xfer_timeout(struct firewire_comm *fc)
{
struct fw_xfer *xfer;
struct tlabel *tl;
struct timeval tv;
struct timeval split_timeout;
int i, s;
split_timeout.tv_sec = 6;
split_timeout.tv_usec = 0;
microtime(&tv);
timevalsub(&tv, &split_timeout);
s = splfw();
for (i = 0; i < 0x40; i ++) {
while ((tl = STAILQ_FIRST(&fc->tlabels[i])) != NULL) {
xfer = tl->xfer;
if (timevalcmp(&xfer->tv, &tv, >))
/* the rests are newer than this */
break;
device_printf(fc->bdev,
"split transaction timeout dst=0x%x tl=0x%x\n",
xfer->dst, i);
xfer->resp = ETIMEDOUT;
STAILQ_REMOVE_HEAD(&fc->tlabels[i], link);
fw_xfer_done(xfer);
}
}
splx(s);
}
static void
firewire_watchdog(void *arg)
{
struct firewire_comm *fc;
fc = (struct firewire_comm *)arg;
firewire_xfer_timeout(fc);
fc->timeout(fc);
callout_reset(&fc->timeout_callout, hz,
(void *)firewire_watchdog, (void *)fc);
}
/*
* The attach routine.
*/
static int
firewire_attach( device_t dev )
{
int i, unitmask, mn;
struct firewire_softc *sc = device_get_softc(dev);
device_t pa = device_get_parent(dev);
struct firewire_comm *fc;
dev_t d;
fc = (struct firewire_comm *)device_get_softc(pa);
sc->fc = fc;
fc->status = -1;
unitmask = UNIT2MIN(device_get_unit(dev));
if( fc->nisodma > FWMAXNDMA) fc->nisodma = FWMAXNDMA;
for ( i = 0 ; i < fc->nisodma ; i++ ){
mn = unitmask | i;
/* XXX device name should be improved */
d = make_dev(&firewire_cdevsw, unit2minor(mn),
UID_ROOT, GID_OPERATOR, 0660,
"fw%x", mn);
#if __FreeBSD_version >= 500000
if (i == 0)
sc->dev = d;
else
dev_depends(sc->dev, d);
#else
sc->dev[i] = d;
#endif
}
d = make_dev(&firewire_cdevsw, unit2minor(unitmask | FWMEM_FLAG),
UID_ROOT, GID_OPERATOR, 0660,
"fwmem%d", device_get_unit(dev));
#if __FreeBSD_version >= 500000
dev_depends(sc->dev, d);
#else
sc->dev[i] = d;
#endif
CALLOUT_INIT(&sc->fc->timeout_callout);
CALLOUT_INIT(&sc->fc->bmr_callout);
CALLOUT_INIT(&sc->fc->retry_probe_callout);
CALLOUT_INIT(&sc->fc->busprobe_callout);
callout_reset(&sc->fc->timeout_callout, hz,
(void *)firewire_watchdog, (void *)sc->fc);
/* Locate our children */
bus_generic_probe(dev);
/* launch attachement of the added children */
bus_generic_attach(dev);
/* bus_reset */
fc->ibr(fc);
return 0;
}
/*
* Attach it as child.
*/
static device_t
firewire_add_child(device_t dev, int order, const char *name, int unit)
{
device_t child;
struct firewire_softc *sc;
sc = (struct firewire_softc *)device_get_softc(dev);
child = device_add_child(dev, name, unit);
if (child) {
device_set_ivars(child, sc->fc);
device_probe_and_attach(child);
}
return child;
}
/*
* Dettach it.
*/
static int
firewire_detach( device_t dev )
{
struct firewire_softc *sc;
struct csrdir *csrd, *next;
struct fw_device *fwdev, *fwdev_next;
sc = (struct firewire_softc *)device_get_softc(dev);
bus_generic_detach(dev);
callout_stop(&sc->fc->timeout_callout);
callout_stop(&sc->fc->bmr_callout);
callout_stop(&sc->fc->retry_probe_callout);
callout_stop(&sc->fc->busprobe_callout);
#if __FreeBSD_version >= 500000
destroy_dev(sc->dev);
#else
{
int j;
for (j = 0 ; j < sc->fc->nisodma + 1; j++)
destroy_dev(sc->dev[j]);
}
#endif
/* XXX xfree_free and untimeout on all xfers */
for (fwdev = STAILQ_FIRST(&sc->fc->devices); fwdev != NULL;
fwdev = fwdev_next) {
fwdev_next = STAILQ_NEXT(fwdev, link);
free(fwdev, M_FW);
}
for (csrd = SLIST_FIRST(&sc->fc->csrfree); csrd != NULL; csrd = next) {
next = SLIST_NEXT(csrd, link);
free(csrd, M_FW);
}
free(sc->fc->topology_map, M_FW);
free(sc->fc->speed_map, M_FW);
return(0);
}
#if 0
static int
firewire_shutdown( device_t dev )
{
return 0;
}
#endif
static void
fw_xferq_drain(struct fw_xferq *xferq)
{
struct fw_xfer *xfer;
while ((xfer = STAILQ_FIRST(&xferq->q)) != NULL) {
STAILQ_REMOVE_HEAD(&xferq->q, link);
xferq->queued --;
xfer->resp = EAGAIN;
fw_xfer_done(xfer);
}
}
void
fw_drain_txq(struct firewire_comm *fc)
{
int i;
fw_xferq_drain(fc->atq);
fw_xferq_drain(fc->ats);
for(i = 0; i < fc->nisodma; i++)
fw_xferq_drain(fc->it[i]);
}
/*
* Called after bus reset.
*/
void
fw_busreset(struct firewire_comm *fc)
{
struct firewire_dev_comm *fdc;
device_t *devlistp;
int devcnt;
int i;
switch(fc->status){
case FWBUSMGRELECT:
callout_stop(&fc->bmr_callout);
break;
default:
break;
}
fc->status = FWBUSRESET;
CSRARC(fc, STATE_CLEAR)
= 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14 ;
CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
CSRARC(fc, NODE_IDS) = 0x3f;
CSRARC(fc, TOPO_MAP + 8) = 0;
fc->irm = -1;
fc->max_node = -1;
for(i = 2; i < 0x100/4 - 2 ; i++){
CSRARC(fc, SPED_MAP + i * 4) = 0;
}
CSRARC(fc, STATE_CLEAR) = 1 << 23 | 0 << 17 | 1 << 16 | 1 << 15 | 1 << 14 ;
CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
CSRARC(fc, RESET_START) = 0;
CSRARC(fc, SPLIT_TIMEOUT_HI) = 0;
CSRARC(fc, SPLIT_TIMEOUT_LO) = 800 << 19;
CSRARC(fc, CYCLE_TIME) = 0x0;
CSRARC(fc, BUS_TIME) = 0x0;
CSRARC(fc, BUS_MGR_ID) = 0x3f;
CSRARC(fc, BANDWIDTH_AV) = 4915;
CSRARC(fc, CHANNELS_AV_HI) = 0xffffffff;
CSRARC(fc, CHANNELS_AV_LO) = 0xffffffff;
CSRARC(fc, IP_CHANNELS) = (1 << 31);
CSRARC(fc, CONF_ROM) = 0x04 << 24;
CSRARC(fc, CONF_ROM + 4) = 0x31333934; /* means strings 1394 */
CSRARC(fc, CONF_ROM + 8) = 1 << 31 | 1 << 30 | 1 << 29 |
1 << 28 | 0xff << 16 | 0x09 << 8;
CSRARC(fc, CONF_ROM + 0xc) = 0;
/* DV depend CSRs see blue book */
CSRARC(fc, oPCR) &= ~DV_BROADCAST_ON;
CSRARC(fc, iPCR) &= ~DV_BROADCAST_ON;
CSRARC(fc, STATE_CLEAR) &= ~(1 << 23 | 1 << 15 | 1 << 14 );
CSRARC(fc, STATE_SET) = CSRARC(fc, STATE_CLEAR);
if (device_get_children(fc->bdev, &devlistp, &devcnt) == 0) {
for( i = 0 ; i < devcnt ; i++)
if (device_get_state(devlistp[i]) >= DS_ATTACHED) {
fdc = device_get_softc(devlistp[i]);
if (fdc->post_busreset != NULL)
fdc->post_busreset(fdc);
}
free(devlistp, M_TEMP);
}
}
/* Call once after reboot */
void fw_init(struct firewire_comm *fc)
{
int i;
struct csrdir *csrd;
#ifdef FW_VMACCESS
struct fw_xfer *xfer;
struct fw_bind *fwb;
#endif
fc->max_asyretry = FW_MAXASYRTY;
fc->arq->queued = 0;
fc->ars->queued = 0;
fc->atq->queued = 0;
fc->ats->queued = 0;
fc->arq->buf = NULL;
fc->ars->buf = NULL;
fc->atq->buf = NULL;
fc->ats->buf = NULL;
fc->arq->flag = 0;
fc->ars->flag = 0;
fc->atq->flag = 0;
fc->ats->flag = 0;
STAILQ_INIT(&fc->atq->q);
STAILQ_INIT(&fc->ats->q);
for( i = 0 ; i < fc->nisodma ; i ++ ){
fc->it[i]->queued = 0;
fc->ir[i]->queued = 0;
fc->it[i]->start = NULL;
fc->ir[i]->start = NULL;
fc->it[i]->buf = NULL;
fc->ir[i]->buf = NULL;
fc->it[i]->flag = FWXFERQ_STREAM;
fc->ir[i]->flag = FWXFERQ_STREAM;
STAILQ_INIT(&fc->it[i]->q);
STAILQ_INIT(&fc->ir[i]->q);
STAILQ_INIT(&fc->it[i]->binds);
STAILQ_INIT(&fc->ir[i]->binds);
}
fc->arq->maxq = FWMAXQUEUE;
fc->ars->maxq = FWMAXQUEUE;
fc->atq->maxq = FWMAXQUEUE;
fc->ats->maxq = FWMAXQUEUE;
for( i = 0 ; i < fc->nisodma ; i++){
fc->ir[i]->maxq = FWMAXQUEUE;
fc->it[i]->maxq = FWMAXQUEUE;
}
/* Initialize csr registers */
fc->topology_map = (struct fw_topology_map *)malloc(
sizeof(struct fw_topology_map),
M_FW, M_NOWAIT | M_ZERO);
fc->speed_map = (struct fw_speed_map *)malloc(
sizeof(struct fw_speed_map),
M_FW, M_NOWAIT | M_ZERO);
CSRARC(fc, TOPO_MAP) = 0x3f1 << 16;
CSRARC(fc, TOPO_MAP + 4) = 1;
CSRARC(fc, SPED_MAP) = 0x3f1 << 16;
CSRARC(fc, SPED_MAP + 4) = 1;
STAILQ_INIT(&fc->devices);
STAILQ_INIT(&fc->pending);
/* Initialize csr ROM work space */
SLIST_INIT(&fc->ongocsr);
SLIST_INIT(&fc->csrfree);
for( i = 0 ; i < FWMAXCSRDIR ; i++){
csrd = (struct csrdir *) malloc(sizeof(struct csrdir), M_FW,M_NOWAIT);
if(csrd == NULL) break;
SLIST_INSERT_HEAD(&fc->csrfree, csrd, link);
}
/* Initialize Async handlers */
STAILQ_INIT(&fc->binds);
for( i = 0 ; i < 0x40 ; i++){
STAILQ_INIT(&fc->tlabels[i]);
}
/* DV depend CSRs see blue book */
#if 0
CSRARC(fc, oMPR) = 0x3fff0001; /* # output channel = 1 */
CSRARC(fc, oPCR) = 0x8000007a;
for(i = 4 ; i < 0x7c/4 ; i+=4){
CSRARC(fc, i + oPCR) = 0x8000007a;
}
CSRARC(fc, iMPR) = 0x00ff0001; /* # input channel = 1 */
CSRARC(fc, iPCR) = 0x803f0000;
for(i = 4 ; i < 0x7c/4 ; i+=4){
CSRARC(fc, i + iPCR) = 0x0;
}
#endif
#ifdef FW_VMACCESS
xfer = fw_xfer_alloc();
if(xfer == NULL) return;
fwb = (struct fw_bind *)malloc(sizeof (struct fw_bind), M_FW, M_NOWAIT);
if(fwb == NULL){
fw_xfer_free(xfer);
}
xfer->act.hand = fw_vmaccess;
xfer->fc = fc;
xfer->sc = NULL;
fwb->start_hi = 0x2;
fwb->start_lo = 0;
fwb->addrlen = 0xffffffff;
fwb->xfer = xfer;
fw_bindadd(fc, fwb);
#endif
}
/*
* To lookup binded process from IEEE1394 address.
*/
struct fw_bind *
fw_bindlookup(struct firewire_comm *fc, u_int32_t dest_hi, u_int32_t dest_lo)
{
struct fw_bind *tfw;
for(tfw = STAILQ_FIRST(&fc->binds) ; tfw != NULL ;
tfw = STAILQ_NEXT(tfw, fclist)){
if (tfw->act_type != FWACT_NULL &&
tfw->start_hi == dest_hi &&
tfw->start_lo <= dest_lo &&
(tfw->start_lo + tfw->addrlen) > dest_lo){
return(tfw);
}
}
return(NULL);
}
/*
* To bind IEEE1394 address block to process.
*/
int
fw_bindadd(struct firewire_comm *fc, struct fw_bind *fwb)
{
struct fw_bind *tfw, *tfw2 = NULL;
int err = 0;
tfw = STAILQ_FIRST(&fc->binds);
if(tfw == NULL){
STAILQ_INSERT_HEAD(&fc->binds, fwb, fclist);
goto out;
}
if((tfw->start_hi > fwb->start_hi) ||
(tfw->start_hi == fwb->start_hi &&
(tfw->start_lo > (fwb->start_lo + fwb->addrlen)))){
STAILQ_INSERT_HEAD(&fc->binds, fwb, fclist);
goto out;
}
for(; tfw != NULL; tfw = STAILQ_NEXT(tfw, fclist)){
if((tfw->start_hi < fwb->start_hi) ||
(tfw->start_hi == fwb->start_hi &&
(tfw->start_lo + tfw->addrlen) < fwb->start_lo)){
tfw2 = STAILQ_NEXT(tfw, fclist);
if(tfw2 == NULL)
break;
if((tfw2->start_hi > fwb->start_hi) ||
(tfw2->start_hi == fwb->start_hi &&
tfw2->start_lo > (fwb->start_lo + fwb->addrlen))){
break;
}else{
err = EBUSY;
goto out;
}
}
}
if(tfw != NULL){
STAILQ_INSERT_AFTER(&fc->binds, tfw, fwb, fclist);
}else{
STAILQ_INSERT_TAIL(&fc->binds, fwb, fclist);
}
out:
if (!err && fwb->act_type == FWACT_CH)
STAILQ_INSERT_HEAD(&fc->ir[fwb->sub]->binds, fwb, chlist);
return err;
}
/*
* To free IEEE1394 address block.
*/
int
fw_bindremove(struct firewire_comm *fc, struct fw_bind *fwb)
{
int s;
struct fw_xfer *xfer, *next;
s = splfw();
/* shall we check the existance? */
STAILQ_REMOVE(&fc->binds, fwb, fw_bind, fclist);
/* shall we do this? */
for (xfer = STAILQ_FIRST(&fwb->xferlist); xfer != NULL; xfer = next) {
next = STAILQ_NEXT(xfer, link);
fw_xfer_free(xfer);
}
STAILQ_INIT(&fwb->xferlist);
splx(s);
return 0;
}
/*
* To free transaction label.
*/
static void
fw_tl_free(struct firewire_comm *fc, struct fw_xfer *xfer)
{
struct tlabel *tl;
int s = splfw();
for( tl = STAILQ_FIRST(&fc->tlabels[xfer->tl]); tl != NULL;
tl = STAILQ_NEXT(tl, link)){
if(tl->xfer == xfer){
STAILQ_REMOVE(&fc->tlabels[xfer->tl], tl, tlabel, link);
free(tl, M_FW);
splx(s);
return;
}
}
splx(s);
return;
}
/*
* To obtain XFER structure by transaction label.
*/
static struct fw_xfer *
fw_tl2xfer(struct firewire_comm *fc, int node, int tlabel)
{
struct fw_xfer *xfer;
struct tlabel *tl;
int s = splfw();
for( tl = STAILQ_FIRST(&fc->tlabels[tlabel]); tl != NULL;
tl = STAILQ_NEXT(tl, link)){
if(tl->xfer->dst == node){
xfer = tl->xfer;
splx(s);
if (firewire_debug > 2)
printf("fw_tl2xfer: found tl=%d\n", tlabel);
return(xfer);
}
}
if (firewire_debug > 1)
printf("fw_tl2xfer: not found tl=%d\n", tlabel);
splx(s);
return(NULL);
}
/*
* To allocate IEEE1394 XFER structure.
*/
struct fw_xfer *
fw_xfer_alloc(struct malloc_type *type)
{
struct fw_xfer *xfer;
xfer = malloc(sizeof(struct fw_xfer), type, M_NOWAIT | M_ZERO);
if (xfer == NULL)
return xfer;
microtime(&xfer->tv);
xfer->malloc = type;
return xfer;
}
struct fw_xfer *
fw_xfer_alloc_buf(struct malloc_type *type, int send_len, int recv_len)
{
struct fw_xfer *xfer;
xfer = fw_xfer_alloc(type);
xfer->send.len = send_len;
xfer->recv.len = recv_len;
if (xfer == NULL)
return(NULL);
if (send_len) {
xfer->send.buf = malloc(send_len, type, M_NOWAIT | M_ZERO);
if (xfer->send.buf == NULL) {
fw_xfer_free(xfer);
return(NULL);
}
}
if (recv_len) {
xfer->recv.buf = malloc(recv_len, type, M_NOWAIT);
if (xfer->recv.buf == NULL) {
if (xfer->send.buf != NULL)
free(xfer->send.buf, type);
fw_xfer_free(xfer);
return(NULL);
}
}
return(xfer);
}
/*
* IEEE1394 XFER post process.
*/
void
fw_xfer_done(struct fw_xfer *xfer)
{
if (xfer->act.hand == NULL)
return;
if (xfer->fc->status != FWBUSRESET)
xfer->act.hand(xfer);
else {
printf("fw_xfer_done: pending\n");
if (xfer->fc != NULL)
STAILQ_INSERT_TAIL(&xfer->fc->pending, xfer, link);
else
panic("fw_xfer_done: why xfer->fc is NULL?");
}
}
void
fw_xfer_unload(struct fw_xfer* xfer)
{
int s;
if(xfer == NULL ) return;
if(xfer->state == FWXF_INQ){
printf("fw_xfer_free FWXF_INQ\n");
s = splfw();
STAILQ_REMOVE(&xfer->q->q, xfer, fw_xfer, link);
xfer->q->queued --;
splx(s);
}
if (xfer->fc != NULL) {
#if 1
if(xfer->state == FWXF_START)
/*
* This could happen if:
* 1. We call fwohci_arcv() before fwohci_txd().
* 2. firewire_watch() is called.
*/
printf("fw_xfer_free FWXF_START\n");
#endif
fw_tl_free(xfer->fc, xfer);
}
xfer->state = FWXF_INIT;
xfer->resp = 0;
xfer->retry = 0;
}
/*
* To free IEEE1394 XFER structure.
*/
void
fw_xfer_free( struct fw_xfer* xfer)
{
if(xfer == NULL ) return;
fw_xfer_unload(xfer);
if(xfer->send.buf != NULL){
free(xfer->send.buf, xfer->malloc);
}
if(xfer->recv.buf != NULL){
free(xfer->recv.buf, xfer->malloc);
}
free(xfer, xfer->malloc);
}
static void
fw_asy_callback_free(struct fw_xfer *xfer)
{
#if 0
printf("asyreq done state=%d resp=%d\n",
xfer->state, xfer->resp);
#endif
fw_xfer_free(xfer);
}
/*
* To configure PHY.
*/
static void
fw_phy_config(struct firewire_comm *fc, int root_node, int gap_count)
{
struct fw_xfer *xfer;
struct fw_pkt *fp;
fc->status = FWBUSPHYCONF;
xfer = fw_xfer_alloc_buf(M_FWXFER, 12, 0);
if (xfer == NULL)
return;
xfer->fc = fc;
xfer->retry_req = fw_asybusy;
xfer->act.hand = fw_asy_callback_free;
fp = (struct fw_pkt *)xfer->send.buf;
fp->mode.ld[1] = 0;
if (root_node >= 0)
fp->mode.ld[1] |= (root_node & 0x3f) << 24 | 1 << 23;
if (gap_count >= 0)
fp->mode.ld[1] |= 1 << 22 | (gap_count & 0x3f) << 16;
fp->mode.ld[2] = ~fp->mode.ld[1];
/* XXX Dangerous, how to pass PHY packet to device driver */
fp->mode.common.tcode |= FWTCODE_PHY;
if (firewire_debug)
printf("send phy_config root_node=%d gap_count=%d\n",
root_node, gap_count);
fw_asyreq(fc, -1, xfer);
}
#if 0
/*
* Dump self ID.
*/
static void
fw_print_sid(u_int32_t sid)
{
union fw_self_id *s;
s = (union fw_self_id *) &sid;
printf("node:%d link:%d gap:%d spd:%d del:%d con:%d pwr:%d"
" p0:%d p1:%d p2:%d i:%d m:%d\n",
s->p0.phy_id, s->p0.link_active, s->p0.gap_count,
s->p0.phy_speed, s->p0.phy_delay, s->p0.contender,
s->p0.power_class, s->p0.port0, s->p0.port1,
s->p0.port2, s->p0.initiated_reset, s->p0.more_packets);
}
#endif
/*
* To receive self ID.
*/
void fw_sidrcv(struct firewire_comm* fc, u_int32_t *sid, u_int len)
{
u_int32_t *p;
union fw_self_id *self_id;
u_int i, j, node, c_port = 0, i_branch = 0;
fc->sid_cnt = len /(sizeof(u_int32_t) * 2);
fc->status = FWBUSINIT;
fc->max_node = fc->nodeid & 0x3f;
CSRARC(fc, NODE_IDS) = ((u_int32_t)fc->nodeid) << 16;
fc->status = FWBUSCYMELECT;
fc->topology_map->crc_len = 2;
fc->topology_map->generation ++;
fc->topology_map->self_id_count = 0;
fc->topology_map->node_count = 0;
fc->speed_map->generation ++;
fc->speed_map->crc_len = 1 + (64*64 + 3) / 4;
self_id = &fc->topology_map->self_id[0];
for(i = 0; i < fc->sid_cnt; i ++){
if (sid[1] != ~sid[0]) {
printf("fw_sidrcv: invalid self-id packet\n");
sid += 2;
continue;
}
*self_id = *((union fw_self_id *)sid);
fc->topology_map->crc_len++;
if(self_id->p0.sequel == 0){
fc->topology_map->node_count ++;
c_port = 0;
#if 0
fw_print_sid(sid[0]);
#endif
node = self_id->p0.phy_id;
if(fc->max_node < node){
fc->max_node = self_id->p0.phy_id;
}
/* XXX I'm not sure this is the right speed_map */
fc->speed_map->speed[node][node]
= self_id->p0.phy_speed;
for (j = 0; j < node; j ++) {
fc->speed_map->speed[j][node]
= fc->speed_map->speed[node][j]
= min(fc->speed_map->speed[j][j],
self_id->p0.phy_speed);
}
if ((fc->irm == -1 || self_id->p0.phy_id > fc->irm) &&
(self_id->p0.link_active && self_id->p0.contender)) {
fc->irm = self_id->p0.phy_id;
}
if(self_id->p0.port0 >= 0x2){
c_port++;
}
if(self_id->p0.port1 >= 0x2){
c_port++;
}
if(self_id->p0.port2 >= 0x2){
c_port++;
}
}
if(c_port > 2){
i_branch += (c_port - 2);
}
sid += 2;
self_id++;
fc->topology_map->self_id_count ++;
}
device_printf(fc->bdev, "%d nodes", fc->max_node + 1);
/* CRC */
fc->topology_map->crc = fw_crc16(
(u_int32_t *)&fc->topology_map->generation,
fc->topology_map->crc_len * 4);
fc->speed_map->crc = fw_crc16(
(u_int32_t *)&fc->speed_map->generation,
fc->speed_map->crc_len * 4);
/* byteswap and copy to CSR */
p = (u_int32_t *)fc->topology_map;
for (i = 0; i <= fc->topology_map->crc_len; i++)
CSRARC(fc, TOPO_MAP + i * 4) = htonl(*p++);
p = (u_int32_t *)fc->speed_map;
CSRARC(fc, SPED_MAP) = htonl(*p++);
CSRARC(fc, SPED_MAP + 4) = htonl(*p++);
/* don't byte-swap u_int8_t array */
bcopy(p, &CSRARC(fc, SPED_MAP + 8), (fc->speed_map->crc_len - 1)*4);
fc->max_hop = fc->max_node - i_branch;
printf(", maxhop <= %d", fc->max_hop);
if(fc->irm == -1 ){
printf(", Not found IRM capable node");
}else{
printf(", cable IRM = %d", fc->irm);
if (fc->irm == fc->nodeid)
printf(" (me)");
}
printf("\n");
if (try_bmr && (fc->irm != -1) && (CSRARC(fc, BUS_MGR_ID) == 0x3f)) {
if (fc->irm == fc->nodeid) {
fc->status = FWBUSMGRDONE;
CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, fc->irm);
fw_bmr(fc);
} else {
fc->status = FWBUSMGRELECT;
callout_reset(&fc->bmr_callout, hz/8,
(void *)fw_try_bmr, (void *)fc);
}
} else
fc->status = FWBUSMGRDONE;
callout_reset(&fc->busprobe_callout, hz/4,
(void *)fw_bus_probe, (void *)fc);
}
/*
* To probe devices on the IEEE1394 bus.
*/
static void
fw_bus_probe(struct firewire_comm *fc)
{
int s;
struct fw_device *fwdev, *next;
s = splfw();
fc->status = FWBUSEXPLORE;
fc->retry_count = 0;
/*
* Invalidate all devices, just after bus reset. Devices
* to be removed has not been seen longer time.
*/
for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; fwdev = next) {
next = STAILQ_NEXT(fwdev, link);
if (fwdev->status != FWDEVINVAL) {
fwdev->status = FWDEVINVAL;
fwdev->rcnt = 0;
} else if(fwdev->rcnt < FW_MAXDEVRCNT) {
fwdev->rcnt ++;
} else {
STAILQ_REMOVE(&fc->devices, fwdev, fw_device, link);
free(fwdev, M_FW);
}
}
fc->ongonode = 0;
fc->ongoaddr = CSRROMOFF;
fc->ongodev = NULL;
fc->ongoeui.hi = 0xffffffff; fc->ongoeui.lo = 0xffffffff;
fw_bus_explore(fc);
splx(s);
}
/*
* To collect device informations on the IEEE1394 bus.
*/
static void
fw_bus_explore(struct firewire_comm *fc )
{
int err = 0;
struct fw_device *fwdev, *pfwdev, *tfwdev;
u_int32_t addr;
struct fw_xfer *xfer;
struct fw_pkt *fp;
if(fc->status != FWBUSEXPLORE)
return;
loop:
if(fc->ongonode == fc->nodeid) fc->ongonode++;
if(fc->ongonode > fc->max_node) goto done;
if(fc->ongonode >= 0x3f) goto done;
/* check link */
/* XXX we need to check phy_id first */
if (!fc->topology_map->self_id[fc->ongonode].p0.link_active) {
if (firewire_debug)
printf("node%d: link down\n", fc->ongonode);
fc->ongonode++;
goto loop;
}
if(fc->ongoaddr <= CSRROMOFF &&
fc->ongoeui.hi == 0xffffffff &&
fc->ongoeui.lo == 0xffffffff ){
fc->ongoaddr = CSRROMOFF;
addr = 0xf0000000 | fc->ongoaddr;
}else if(fc->ongoeui.hi == 0xffffffff ){
fc->ongoaddr = CSRROMOFF + 0xc;
addr = 0xf0000000 | fc->ongoaddr;
}else if(fc->ongoeui.lo == 0xffffffff ){
fc->ongoaddr = CSRROMOFF + 0x10;
addr = 0xf0000000 | fc->ongoaddr;
}else if(fc->ongodev == NULL){
STAILQ_FOREACH(fwdev, &fc->devices, link)
if (FW_EUI64_EQUAL(fwdev->eui, fc->ongoeui))
break;
if(fwdev != NULL){
fwdev->dst = fc->ongonode;
fwdev->status = FWDEVATTACHED;
fc->ongonode++;
fc->ongoaddr = CSRROMOFF;
fc->ongodev = NULL;
fc->ongoeui.hi = 0xffffffff; fc->ongoeui.lo = 0xffffffff;
goto loop;
}
fwdev = malloc(sizeof(struct fw_device), M_FW, M_NOWAIT);
if(fwdev == NULL)
return;
fwdev->fc = fc;
fwdev->rommax = 0;
fwdev->dst = fc->ongonode;
fwdev->eui.hi = fc->ongoeui.hi; fwdev->eui.lo = fc->ongoeui.lo;
fwdev->status = FWDEVINIT;
fwdev->speed = fc->speed_map->speed[fc->nodeid][fc->ongonode];
pfwdev = NULL;
STAILQ_FOREACH(tfwdev, &fc->devices, link) {
if (tfwdev->eui.hi > fwdev->eui.hi ||
(tfwdev->eui.hi == fwdev->eui.hi &&
tfwdev->eui.lo > fwdev->eui.lo))
break;
pfwdev = tfwdev;
}
if (pfwdev == NULL)
STAILQ_INSERT_HEAD(&fc->devices, fwdev, link);
else
STAILQ_INSERT_AFTER(&fc->devices, pfwdev, fwdev, link);
device_printf(fc->bdev, "New %s device ID:%08x%08x\n",
linkspeed[fwdev->speed],
fc->ongoeui.hi, fc->ongoeui.lo);
fc->ongodev = fwdev;
fc->ongoaddr = CSRROMOFF;
addr = 0xf0000000 | fc->ongoaddr;
}else{
addr = 0xf0000000 | fc->ongoaddr;
}
#if 0
xfer = asyreqq(fc, FWSPD_S100, 0, 0,
((FWLOCALBUS | fc->ongonode) << 16) | 0xffff , addr,
fw_bus_explore_callback);
if(xfer == NULL) goto done;
#else
xfer = fw_xfer_alloc_buf(M_FWXFER, 16, 16);
if(xfer == NULL){
goto done;
}
xfer->spd = 0;
fp = (struct fw_pkt *)xfer->send.buf;
fp->mode.rreqq.dest_hi = 0xffff;
fp->mode.rreqq.tlrt = 0;
fp->mode.rreqq.tcode = FWTCODE_RREQQ;
fp->mode.rreqq.pri = 0;
fp->mode.rreqq.src = 0;
xfer->dst = FWLOCALBUS | fc->ongonode;
fp->mode.rreqq.dst = xfer->dst;
fp->mode.rreqq.dest_lo = addr;
xfer->act.hand = fw_bus_explore_callback;
if (firewire_debug)
printf("node%d: explore addr=0x%x\n",
fc->ongonode, fc->ongoaddr);
err = fw_asyreq(fc, -1, xfer);
if(err){
fw_xfer_free( xfer);
return;
}
#endif
return;
done:
/* fw_attach_devs */
fc->status = FWBUSEXPDONE;
if (firewire_debug)
printf("bus_explore done\n");
fw_attach_dev(fc);
return;
}
/* Portable Async. request read quad */
struct fw_xfer *
asyreqq(struct firewire_comm *fc, u_int8_t spd, u_int8_t tl, u_int8_t rt,
u_int32_t addr_hi, u_int32_t addr_lo,
void (*hand) __P((struct fw_xfer*)))
{
struct fw_xfer *xfer;
struct fw_pkt *fp;
int err;
xfer = fw_xfer_alloc_buf(M_FWXFER, 16, 16);
if (xfer == NULL)
return NULL;
xfer->spd = spd; /* XXX:min(spd, fc->spd) */
fp = (struct fw_pkt *)xfer->send.buf;
fp->mode.rreqq.dest_hi = addr_hi & 0xffff;
if(tl & FWP_TL_VALID){
fp->mode.rreqq.tlrt = (tl & 0x3f) << 2;
}else{
fp->mode.rreqq.tlrt = 0;
}
fp->mode.rreqq.tlrt |= rt & 0x3;
fp->mode.rreqq.tcode = FWTCODE_RREQQ;
fp->mode.rreqq.pri = 0;
fp->mode.rreqq.src = 0;
xfer->dst = addr_hi >> 16;
fp->mode.rreqq.dst = xfer->dst;
fp->mode.rreqq.dest_lo = addr_lo;
xfer->act.hand = hand;
err = fw_asyreq(fc, -1, xfer);
if(err){
fw_xfer_free( xfer);
return NULL;
}
return xfer;
}
/*
* Callback for the IEEE1394 bus information collection.
*/
static void
fw_bus_explore_callback(struct fw_xfer *xfer)
{
struct firewire_comm *fc;
struct fw_pkt *sfp,*rfp;
struct csrhdr *chdr;
struct csrdir *csrd;
struct csrreg *csrreg;
u_int32_t offset;
if(xfer == NULL) {
printf("xfer == NULL\n");
return;
}
fc = xfer->fc;
if (firewire_debug)
printf("node%d: callback addr=0x%x\n",
fc->ongonode, fc->ongoaddr);
if(xfer->resp != 0){
printf("node%d: resp=%d addr=0x%x\n",
fc->ongonode, xfer->resp, fc->ongoaddr);
goto errnode;
}
if(xfer->send.buf == NULL){
printf("node%d: send.buf=NULL addr=0x%x\n",
fc->ongonode, fc->ongoaddr);
goto errnode;
}
sfp = (struct fw_pkt *)xfer->send.buf;
if(xfer->recv.buf == NULL){
printf("node%d: recv.buf=NULL addr=0x%x\n",
fc->ongonode, fc->ongoaddr);
goto errnode;
}
rfp = (struct fw_pkt *)xfer->recv.buf;
#if 0
{
u_int32_t *qld;
int i;
qld = (u_int32_t *)xfer->recv.buf;
printf("len:%d\n", xfer->recv.len);
for( i = 0 ; i <= xfer->recv.len && i < 32; i+= 4){
printf("0x%08x ", rfp->mode.ld[i/4]);
if((i % 16) == 15) printf("\n");
}
if((i % 16) != 15) printf("\n");
}
#endif
if(fc->ongodev == NULL){
if(sfp->mode.rreqq.dest_lo == (0xf0000000 | CSRROMOFF)){
rfp->mode.rresq.data = ntohl(rfp->mode.rresq.data);
chdr = (struct csrhdr *)(&rfp->mode.rresq.data);
/* If CSR is minimal confinguration, more investgation is not needed. */
if(chdr->info_len == 1){
if (firewire_debug)
printf("node%d: minimal config\n",
fc->ongonode);
goto nextnode;
}else{
fc->ongoaddr = CSRROMOFF + 0xc;
}
}else if(sfp->mode.rreqq.dest_lo == (0xf0000000 |(CSRROMOFF + 0xc))){
fc->ongoeui.hi = ntohl(rfp->mode.rresq.data);
fc->ongoaddr = CSRROMOFF + 0x10;
}else if(sfp->mode.rreqq.dest_lo == (0xf0000000 |(CSRROMOFF + 0x10))){
fc->ongoeui.lo = ntohl(rfp->mode.rresq.data);
if (fc->ongoeui.hi == 0 && fc->ongoeui.lo == 0) {
if (firewire_debug)
printf("node%d: eui64 is zero.\n",
fc->ongonode);
goto nextnode;
}
fc->ongoaddr = CSRROMOFF;
}
}else{
fc->ongodev->csrrom[(fc->ongoaddr - CSRROMOFF)/4] = ntohl(rfp->mode.rresq.data);
if(fc->ongoaddr > fc->ongodev->rommax){
fc->ongodev->rommax = fc->ongoaddr;
}
csrd = SLIST_FIRST(&fc->ongocsr);
if((csrd = SLIST_FIRST(&fc->ongocsr)) == NULL){
chdr = (struct csrhdr *)(fc->ongodev->csrrom);
offset = CSRROMOFF;
}else{
chdr = (struct csrhdr *)&fc->ongodev->csrrom[(csrd->off - CSRROMOFF)/4];
offset = csrd->off;
}
if(fc->ongoaddr > (CSRROMOFF + 0x14) && fc->ongoaddr != offset){
csrreg = (struct csrreg *)&fc->ongodev->csrrom[(fc->ongoaddr - CSRROMOFF)/4];
if( csrreg->key == 0x81 || csrreg->key == 0xd1){
csrd = SLIST_FIRST(&fc->csrfree);
if(csrd == NULL){
goto nextnode;
}else{
csrd->ongoaddr = fc->ongoaddr;
fc->ongoaddr += csrreg->val * 4;
csrd->off = fc->ongoaddr;
SLIST_REMOVE_HEAD(&fc->csrfree, link);
SLIST_INSERT_HEAD(&fc->ongocsr, csrd, link);
goto nextaddr;
}
}
}
fc->ongoaddr += 4;
if(((fc->ongoaddr - offset)/4 > chdr->crc_len) &&
(fc->ongodev->rommax < 0x414)){
if(fc->ongodev->rommax <= 0x414){
csrd = SLIST_FIRST(&fc->csrfree);
if(csrd == NULL) goto nextnode;
csrd->off = fc->ongoaddr;
csrd->ongoaddr = fc->ongoaddr;
SLIST_REMOVE_HEAD(&fc->csrfree, link);
SLIST_INSERT_HEAD(&fc->ongocsr, csrd, link);
}
goto nextaddr;
}
while(((fc->ongoaddr - offset)/4 > chdr->crc_len)){
if(csrd == NULL){
goto nextnode;
};
fc->ongoaddr = csrd->ongoaddr + 4;
SLIST_REMOVE_HEAD(&fc->ongocsr, link);
SLIST_INSERT_HEAD(&fc->csrfree, csrd, link);
csrd = SLIST_FIRST(&fc->ongocsr);
if((csrd = SLIST_FIRST(&fc->ongocsr)) == NULL){
chdr = (struct csrhdr *)(fc->ongodev->csrrom);
offset = CSRROMOFF;
}else{
chdr = (struct csrhdr *)&(fc->ongodev->csrrom[(csrd->off - CSRROMOFF)/4]);
offset = csrd->off;
}
}
if((fc->ongoaddr - CSRROMOFF) > CSRROMSIZE){
goto nextnode;
}
}
nextaddr:
fw_xfer_free( xfer);
fw_bus_explore(fc);
return;
errnode:
fc->retry_count++;
if (fc->ongodev != NULL)
fc->ongodev->status = FWDEVINVAL;
nextnode:
fw_xfer_free( xfer);
fc->ongonode++;
/* housekeeping work space */
fc->ongoaddr = CSRROMOFF;
fc->ongodev = NULL;
fc->ongoeui.hi = 0xffffffff; fc->ongoeui.lo = 0xffffffff;
while((csrd = SLIST_FIRST(&fc->ongocsr)) != NULL){
SLIST_REMOVE_HEAD(&fc->ongocsr, link);
SLIST_INSERT_HEAD(&fc->csrfree, csrd, link);
}
fw_bus_explore(fc);
return;
}
/*
* To attach sub-devices layer onto IEEE1394 bus.
*/
static void
fw_attach_dev(struct firewire_comm *fc)
{
struct fw_device *fwdev;
struct fw_xfer *xfer;
int i, err;
device_t *devlistp;
int devcnt;
struct firewire_dev_comm *fdc;
STAILQ_FOREACH(fwdev, &fc->devices, link)
if (fwdev->status == FWDEVINIT)
fwdev->status = FWDEVATTACHED;
err = device_get_children(fc->bdev, &devlistp, &devcnt);
if( err != 0 )
return;
for( i = 0 ; i < devcnt ; i++){
if (device_get_state(devlistp[i]) >= DS_ATTACHED) {
fdc = device_get_softc(devlistp[i]);
if (fdc->post_explore != NULL)
fdc->post_explore(fdc);
}
}
free(devlistp, M_TEMP);
/* call pending handlers */
i = 0;
while ((xfer = STAILQ_FIRST(&fc->pending))) {
STAILQ_REMOVE_HEAD(&fc->pending, link);
i++;
if (xfer->act.hand)
xfer->act.hand(xfer);
}
if (i > 0)
printf("fw_attach_dev: %d pending handlers called\n", i);
if (fc->retry_count > 0) {
printf("probe failed for %d node\n", fc->retry_count);
#if 0
callout_reset(&fc->retry_probe_callout, hz*2,
(void *)fc->ibr, (void *)fc);
#endif
}
return;
}
/*
* To allocate uniq transaction label.
*/
static int
fw_get_tlabel(struct firewire_comm *fc, struct fw_xfer *xfer)
{
u_int i;
struct tlabel *tl, *tmptl;
int s;
static u_int32_t label = 0;
s = splfw();
for( i = 0 ; i < 0x40 ; i ++){
label = (label + 1) & 0x3f;
for(tmptl = STAILQ_FIRST(&fc->tlabels[label]);
tmptl != NULL; tmptl = STAILQ_NEXT(tmptl, link)){
if(tmptl->xfer->dst == xfer->dst) break;
}
if(tmptl == NULL) {
tl = malloc(sizeof(struct tlabel),M_FW,M_NOWAIT);
if (tl == NULL) {
splx(s);
return (-1);
}
tl->xfer = xfer;
STAILQ_INSERT_TAIL(&fc->tlabels[label], tl, link);
splx(s);
if (firewire_debug > 1)
printf("fw_get_tlabel: dst=%d tl=%d\n",
xfer->dst, label);
return(label);
}
}
splx(s);
printf("fw_get_tlabel: no free tlabel\n");
return(-1);
}
static void
fw_rcv_copy(struct fw_xfer *xfer, struct iovec *vec, int nvec)
{
char *p;
int res, i, len;
p = xfer->recv.buf;
res = xfer->recv.len;
for (i = 0; i < nvec; i++, vec++) {
len = vec->iov_len;
if (res < len) {
printf("rcv buffer(%d) is %d bytes short.\n",
xfer->recv.len, len - res);
len = res;
}
bcopy(vec->iov_base, p, len);
p += len;
res -= len;
if (res <= 0)
break;
}
xfer->recv.len -= res;
}
/*
* Generic packet receving process.
*/
void
fw_rcv(struct firewire_comm *fc, struct iovec *vec, int nvec, u_int sub, u_int spd)
{
struct fw_pkt *fp, *resfp;
struct fw_xfer *xfer;
struct fw_bind *bind;
struct firewire_softc *sc;
int tcode, s;
int i, len, oldstate;
#if 0
{
u_int32_t *qld;
int i;
qld = (u_int32_t *)buf;
printf("spd %d len:%d\n", spd, len);
for( i = 0 ; i <= len && i < 32; i+= 4){
printf("0x%08x ", ntohl(qld[i/4]));
if((i % 16) == 15) printf("\n");
}
if((i % 16) != 15) printf("\n");
}
#endif
fp = (struct fw_pkt *)vec[0].iov_base;
tcode = fp->mode.common.tcode;
#if 0 /* XXX this check is not valid for RRESQ and WREQQ */
if (vec[0].iov_len < fc->tcode[tcode].hdr_len) {
#if __FreeBSD_version >= 500000
printf("fw_rcv: iov_len(%zu) is less than"
#else
printf("fw_rcv: iov_len(%u) is less than"
#endif
" hdr_len(%d:tcode=%d)\n", vec[0].iov_len,
fc->tcode[tcode].hdr_len, tcode);
}
#endif
switch (tcode) {
case FWTCODE_WRES:
case FWTCODE_RRESQ:
case FWTCODE_RRESB:
case FWTCODE_LRES:
xfer = fw_tl2xfer(fc, fp->mode.hdr.src,
fp->mode.hdr.tlrt >> 2);
if(xfer == NULL) {
printf("fw_rcv: unknown response "
"tcode=%d src=0x%x tl=0x%x rt=%d data=0x%x\n",
tcode,
fp->mode.hdr.src,
fp->mode.hdr.tlrt >> 2,
fp->mode.hdr.tlrt & 3,
fp->mode.rresq.data);
#if 1
printf("try ad-hoc work around!!\n");
xfer = fw_tl2xfer(fc, fp->mode.hdr.src,
(fp->mode.hdr.tlrt >> 2)^3);
if (xfer == NULL) {
printf("no use...\n");
goto err;
}
#else
goto err;
#endif
}
fw_rcv_copy(xfer, vec, nvec);
xfer->resp = 0;
/* make sure the packet is drained in AT queue */
oldstate = xfer->state;
xfer->state = FWXF_RCVD;
switch (oldstate) {
case FWXF_SENT:
fw_xfer_done(xfer);
break;
case FWXF_START:
if (firewire_debug)
printf("not sent yet\n");
break;
default:
printf("unexpected state %d\n", xfer->state);
}
return;
case FWTCODE_WREQQ:
case FWTCODE_WREQB:
case FWTCODE_RREQQ:
case FWTCODE_RREQB:
case FWTCODE_LREQ:
bind = fw_bindlookup(fc, fp->mode.rreqq.dest_hi,
fp->mode.rreqq.dest_lo);
if(bind == NULL){
#if __FreeBSD_version >= 500000
printf("Unknown service addr 0x%08x:0x%08x tcode=%x src=0x%x data=%x\n",
#else
printf("Unknown service addr 0x%08x:0x%08x tcode=%x src=0x%x data=%lx\n",
#endif
fp->mode.wreqq.dest_hi,
fp->mode.wreqq.dest_lo,
tcode,
fp->mode.hdr.src,
ntohl(fp->mode.wreqq.data));
if (fc->status == FWBUSRESET) {
printf("fw_rcv: cannot respond(bus reset)!\n");
goto err;
}
xfer = fw_xfer_alloc_buf(M_FWXFER, 16, 0);
if(xfer == NULL){
return;
}
xfer->spd = spd;
resfp = (struct fw_pkt *)xfer->send.buf;
switch (tcode) {
case FWTCODE_WREQQ:
case FWTCODE_WREQB:
resfp->mode.hdr.tcode = FWTCODE_WRES;
xfer->send.len = 12;
break;
case FWTCODE_RREQQ:
resfp->mode.hdr.tcode = FWTCODE_RRESQ;
xfer->send.len = 16;
break;
case FWTCODE_RREQB:
resfp->mode.hdr.tcode = FWTCODE_RRESB;
xfer->send.len = 16;
break;
case FWTCODE_LREQ:
resfp->mode.hdr.tcode = FWTCODE_LRES;
xfer->send.len = 16;
break;
}
resfp->mode.hdr.dst = fp->mode.hdr.src;
resfp->mode.hdr.tlrt = fp->mode.hdr.tlrt;
resfp->mode.hdr.pri = fp->mode.hdr.pri;
resfp->mode.rresb.rtcode = 7;
resfp->mode.rresb.extcode = 0;
resfp->mode.rresb.len = 0;
/*
xfer->act.hand = fw_asy_callback;
*/
xfer->act.hand = fw_xfer_free;
if(fw_asyreq(fc, -1, xfer)){
fw_xfer_free( xfer);
return;
}
goto err;
}
len = 0;
for (i = 0; i < nvec; i ++)
len += vec[i].iov_len;
switch(bind->act_type){
case FWACT_XFER:
/* splfw()?? */
xfer = STAILQ_FIRST(&bind->xferlist);
if (xfer == NULL) {
printf("Discard a packet for this bind.\n");
goto err;
}
STAILQ_REMOVE_HEAD(&bind->xferlist, link);
fw_rcv_copy(xfer, vec, nvec);
xfer->spd = spd;
if (fc->status != FWBUSRESET)
xfer->act.hand(xfer);
else
STAILQ_INSERT_TAIL(&fc->pending, xfer, link);
return;
break;
case FWACT_CH:
if(fc->ir[bind->sub]->queued >=
fc->ir[bind->sub]->maxq){
device_printf(fc->bdev,
"Discard a packet %x %d\n",
bind->sub,
fc->ir[bind->sub]->queued);
goto err;
}
xfer = STAILQ_FIRST(&bind->xferlist);
if (xfer == NULL) {
printf("Discard packet for this bind\n");
goto err;
}
STAILQ_REMOVE_HEAD(&bind->xferlist, link);
fw_rcv_copy(xfer, vec, nvec);
xfer->spd = spd;
s = splfw();
fc->ir[bind->sub]->queued++;
STAILQ_INSERT_TAIL(&fc->ir[bind->sub]->q, xfer, link);
splx(s);
wakeup((caddr_t)fc->ir[bind->sub]);
return;
break;
default:
goto err;
break;
}
break;
case FWTCODE_STREAM:
{
struct fw_xferq *xferq;
xferq = fc->ir[sub];
#if 0
printf("stream rcv dma %d len %d off %d spd %d\n",
sub, len, off, spd);
#endif
if(xferq->queued >= xferq->maxq) {
printf("receive queue is full\n");
goto err;
}
/* XXX get xfer from xfer queue, we don't need copy for
per packet mode */
xfer = fw_xfer_alloc_buf(M_FWXFER, 0, /* XXX */
vec[0].iov_len);
if(xfer == NULL) goto err;
fw_rcv_copy(xfer, vec, nvec);
xfer->spd = spd;
s = splfw();
xferq->queued++;
STAILQ_INSERT_TAIL(&xferq->q, xfer, link);
splx(s);
sc = device_get_softc(fc->bdev);
#if __FreeBSD_version >= 500000
if (SEL_WAITING(&xferq->rsel))
#else
if (&xferq->rsel.si_pid != 0)
#endif
selwakeup(&xferq->rsel);
if (xferq->flag & FWXFERQ_WAKEUP) {
xferq->flag &= ~FWXFERQ_WAKEUP;
wakeup((caddr_t)xferq);
}
if (xferq->flag & FWXFERQ_HANDLER) {
xferq->hand(xferq);
}
return;
break;
}
default:
printf("fw_rcv: unknow tcode %d\n", tcode);
break;
}
err:
return;
}
/*
* Post process for Bus Manager election process.
*/
static void
fw_try_bmr_callback(struct fw_xfer *xfer)
{
struct fw_pkt *rfp;
struct firewire_comm *fc;
int bmr;
if (xfer == NULL)
return;
fc = xfer->fc;
if (xfer->resp != 0)
goto error;
if (xfer->send.buf == NULL)
goto error;
if (xfer->recv.buf == NULL)
goto error;
rfp = (struct fw_pkt *)xfer->recv.buf;
if (rfp->mode.lres.rtcode != FWRCODE_COMPLETE)
goto error;
bmr = ntohl(rfp->mode.lres.payload[0]);
if (bmr == 0x3f)
bmr = fc->nodeid;
CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, bmr & 0x3f);
fw_xfer_free(xfer);
fw_bmr(fc);
return;
error:
device_printf(fc->bdev, "bus manager election failed\n");
fw_xfer_free(xfer);
}
/*
* To candidate Bus Manager election process.
*/
static void
fw_try_bmr(void *arg)
{
struct fw_xfer *xfer;
struct firewire_comm *fc = (struct firewire_comm *)arg;
struct fw_pkt *fp;
int err = 0;
xfer = fw_xfer_alloc_buf(M_FWXFER, 24, 20);
if(xfer == NULL){
return;
}
xfer->spd = 0;
fc->status = FWBUSMGRELECT;
fp = (struct fw_pkt *)xfer->send.buf;
fp->mode.lreq.dest_hi = 0xffff;
fp->mode.lreq.tlrt = 0;
fp->mode.lreq.tcode = FWTCODE_LREQ;
fp->mode.lreq.pri = 0;
fp->mode.lreq.src = 0;
fp->mode.lreq.len = 8;
fp->mode.lreq.extcode = FW_LREQ_CMPSWAP;
xfer->dst = FWLOCALBUS | fc->irm;
fp->mode.lreq.dst = xfer->dst;
fp->mode.lreq.dest_lo = 0xf0000000 | BUS_MGR_ID;
fp->mode.lreq.payload[0] = htonl(0x3f);
fp->mode.lreq.payload[1] = htonl(fc->nodeid);
xfer->act.hand = fw_try_bmr_callback;
err = fw_asyreq(fc, -1, xfer);
if(err){
fw_xfer_free( xfer);
return;
}
return;
}
#ifdef FW_VMACCESS
/*
* Software implementation for physical memory block access.
* XXX:Too slow, usef for debug purpose only.
*/
static void
fw_vmaccess(struct fw_xfer *xfer){
struct fw_pkt *rfp, *sfp = NULL;
u_int32_t *ld = (u_int32_t *)xfer->recv.buf;
printf("vmaccess spd:%2x len:%03x data:%08x %08x %08x %08x\n",
xfer->spd, xfer->recv.len, ntohl(ld[0]), ntohl(ld[1]), ntohl(ld[2]), ntohl(ld[3]));
printf("vmaccess data:%08x %08x %08x %08x\n", ntohl(ld[4]), ntohl(ld[5]), ntohl(ld[6]), ntohl(ld[7]));
if(xfer->resp != 0){
fw_xfer_free( xfer);
return;
}
if(xfer->recv.buf == NULL){
fw_xfer_free( xfer);
return;
}
rfp = (struct fw_pkt *)xfer->recv.buf;
switch(rfp->mode.hdr.tcode){
/* XXX need fix for 64bit arch */
case FWTCODE_WREQB:
xfer->send.buf = malloc(12, M_FW, M_NOWAIT);
xfer->send.len = 12;
sfp = (struct fw_pkt *)xfer->send.buf;
bcopy(rfp->mode.wreqb.payload,
(caddr_t)ntohl(rfp->mode.wreqb.dest_lo), ntohs(rfp->mode.wreqb.len));
sfp->mode.wres.tcode = FWTCODE_WRES;
sfp->mode.wres.rtcode = 0;
break;
case FWTCODE_WREQQ:
xfer->send.buf = malloc(12, M_FW, M_NOWAIT);
xfer->send.len = 12;
sfp->mode.wres.tcode = FWTCODE_WRES;
*((u_int32_t *)(ntohl(rfp->mode.wreqb.dest_lo))) = rfp->mode.wreqq.data;
sfp->mode.wres.rtcode = 0;
break;
case FWTCODE_RREQB:
xfer->send.buf = malloc(16 + rfp->mode.rreqb.len, M_FW, M_NOWAIT);
xfer->send.len = 16 + ntohs(rfp->mode.rreqb.len);
sfp = (struct fw_pkt *)xfer->send.buf;
bcopy((caddr_t)ntohl(rfp->mode.rreqb.dest_lo),
sfp->mode.rresb.payload, (u_int16_t)ntohs(rfp->mode.rreqb.len));
sfp->mode.rresb.tcode = FWTCODE_RRESB;
sfp->mode.rresb.len = rfp->mode.rreqb.len;
sfp->mode.rresb.rtcode = 0;
sfp->mode.rresb.extcode = 0;
break;
case FWTCODE_RREQQ:
xfer->send.buf = malloc(16, M_FW, M_NOWAIT);
xfer->send.len = 16;
sfp = (struct fw_pkt *)xfer->send.buf;
sfp->mode.rresq.data = *(u_int32_t *)(ntohl(rfp->mode.rreqq.dest_lo));
sfp->mode.wres.tcode = FWTCODE_RRESQ;
sfp->mode.rresb.rtcode = 0;
break;
default:
fw_xfer_free( xfer);
return;
}
sfp->mode.hdr.dst = rfp->mode.hdr.src;
xfer->dst = ntohs(rfp->mode.hdr.src);
xfer->act.hand = fw_xfer_free;
xfer->retry_req = fw_asybusy;
sfp->mode.hdr.tlrt = rfp->mode.hdr.tlrt;
sfp->mode.hdr.pri = 0;
fw_asyreq(xfer->fc, -1, xfer);
/**/
return;
}
#endif
/*
* CRC16 check-sum for IEEE1394 register blocks.
*/
u_int16_t
fw_crc16(u_int32_t *ptr, u_int32_t len){
u_int32_t i, sum, crc = 0;
int shift;
len = (len + 3) & ~3;
for(i = 0 ; i < len ; i+= 4){
for( shift = 28 ; shift >= 0 ; shift -= 4){
sum = ((crc >> 12) ^ (ptr[i/4] >> shift)) & 0xf;
crc = (crc << 4) ^ ( sum << 12 ) ^ ( sum << 5) ^ sum;
}
crc &= 0xffff;
}
return((u_int16_t) crc);
}
static int
fw_bmr(struct firewire_comm *fc)
{
struct fw_device fwdev;
union fw_self_id *self_id;
int cmstr;
/* Check to see if the current root node is cycle master capable */
self_id = &fc->topology_map->self_id[fc->max_node];
if (fc->max_node > 0) {
/* XXX check cmc bit of businfo block rather than contender */
if (self_id->p0.link_active && self_id->p0.contender)
cmstr = fc->max_node;
else {
device_printf(fc->bdev,
"root node is not cycle master capable\n");
/* XXX shall we be the cycle master? */
cmstr = fc->nodeid;
/* XXX need bus reset */
}
} else
cmstr = -1;
device_printf(fc->bdev, "bus manager %d ", CSRARC(fc, BUS_MGR_ID));
if(CSRARC(fc, BUS_MGR_ID) != fc->nodeid) {
/* We are not the bus manager */
printf("\n");
return(0);
}
printf("(me)\n");
/* Optimize gapcount */
if(fc->max_hop <= MAX_GAPHOP )
fw_phy_config(fc, cmstr, gap_cnt[fc->max_hop]);
/* If we are the cycle master, nothing to do */
if (cmstr == fc->nodeid || cmstr == -1)
return 0;
/* Bus probe has not finished, make dummy fwdev for cmstr */
bzero(&fwdev, sizeof(fwdev));
fwdev.fc = fc;
fwdev.dst = cmstr;
fwdev.speed = 0;
fwdev.maxrec = 8; /* 512 */
fwdev.status = FWDEVINIT;
/* Set cmstr bit on the cycle master */
fwmem_write_quad(&fwdev, NULL, 0/*spd*/,
0xffff, 0xf0000000 | STATE_SET, htonl(1 << 8),
fw_asy_callback_free);
return 0;
}
DRIVER_MODULE(firewire,fwohci,firewire_driver,firewire_devclass,0,0);
MODULE_VERSION(firewire, 1);
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