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freebsd/sys/dev/firewire/firewire.c
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Abdelkader Boudih dd56711e83 firewire: replace magic numbers with named constants 
No functional change.

Reviewed by:	adrian
Differential Revision:	https://reviews.freebsd.org/D58311
2026-07-20 15:48:44 -07:00

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/*-
* SPDX-License-Identifier: BSD-4-Clause
*
* 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.
*/
#include <sys/param.h>
#include <sys/conf.h>
#include <sys/eventhandler.h>
#include <sys/jail.h>
#include <sys/kernel.h>
#include <sys/kthread.h>
#include <sys/malloc.h>
#include <sys/module.h>
#include <sys/sysctl.h>
#include <sys/systm.h>
#include <sys/kdb.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>
struct crom_src_buf {
struct crom_src src;
struct crom_chunk root;
struct crom_chunk vendor;
struct crom_chunk hw;
};
int firewire_debug = 0, try_bmr = 1, hold_count = 0;
SYSCTL_INT(_debug, OID_AUTO, firewire_debug, CTLFLAG_RW, &firewire_debug, 0,
"FireWire driver debug flag");
SYSCTL_NODE(_hw, OID_AUTO, firewire, CTLFLAG_RD | CTLFLAG_MPSAFE, 0,
"FireWire Subsystem");
SYSCTL_INT(_hw_firewire, OID_AUTO, try_bmr, CTLFLAG_RW, &try_bmr, 0,
"Try to be a bus manager");
SYSCTL_INT(_hw_firewire, OID_AUTO, hold_count, CTLFLAG_RW, &hold_count, 0,
"Number of count of bus resets for removing lost device information");
MALLOC_DEFINE(M_FW, "firewire", "FireWire");
MALLOC_DEFINE(M_FWXFER, "fw_xfer", "XFER/FireWire");
#define FW_MAXASYRTY 4
/* Split timeout: 800 cycles (see IEEE 1394-1995 8.3.2.2.2) */
#define FW_SPLIT_TIMEOUT_CYCLES 800
/* Default available isochronous bandwidth units (IEEE 1394-1995 Table 8-4) */
#define FW_BANDWIDTH_AVAILABLE 4915
/* ROM header size in quads: bus info block (4) + CRC quad (1) */
#define FW_ROM_HEADER_QUADS 5
/* Maximum retries when exploring a remote node's CSR ROM */
#define FW_EXPLORE_MAX_RETRIES 3
/* maxrec value encoding 512-byte payload (2^(maxrec+1) = 512 => maxrec=8) */
#define FW_MAXREC_512 8
/* PHY configuration packet bit fields (IEEE 1394-1995 4.3.4.1) */
#define FW_PHY_ROOT_BIT (1 << 23)
#define FW_PHY_ROOT_SHIFT 24
#define FW_PHY_GAP_BIT (1 << 22)
#define FW_PHY_GAP_SHIFT 16
devclass_t firewire_devclass;
static void firewire_identify(driver_t *, device_t);
static int firewire_probe(device_t);
static int firewire_attach(device_t);
static int firewire_detach(device_t);
static int firewire_resume(device_t);
static void firewire_xfer_timeout(void *, int);
static device_t firewire_add_child(device_t, u_int, const char *, int);
static void firewire_child_deleted(device_t, device_t);
static void fw_try_bmr(void *);
static void fw_try_bmr_callback(struct fw_xfer *);
static void fw_asystart(struct fw_xfer *);
static int fw_get_tlabel(struct firewire_comm *, struct fw_xfer *);
static void fw_bus_probe(void *);
static void fw_attach_dev(struct firewire_comm *);
static void fw_parse_units(struct fw_device *);
static void fw_create_unit_children(struct firewire_comm *, struct fw_device *);
static int fw_remove_unit_children(struct firewire_comm *, struct fw_device *);
static void fw_bus_probe_thread(void *);
#ifdef FW_VMACCESS
static void fw_vmaccess (struct fw_xfer *);
#endif
static int fw_bmr (struct firewire_comm *);
static void fw_dump_hdr(struct fw_pkt *, char *);
static device_method_t firewire_methods[] = {
/* Device interface */
DEVMETHOD(device_identify, firewire_identify),
DEVMETHOD(device_probe, firewire_probe),
DEVMETHOD(device_attach, firewire_attach),
DEVMETHOD(device_detach, firewire_detach),
DEVMETHOD(device_suspend, bus_generic_suspend),
DEVMETHOD(device_resume, firewire_resume),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
/* Bus interface */
DEVMETHOD(bus_add_child, firewire_add_child),
DEVMETHOD(bus_child_deleted, firewire_child_deleted),
DEVMETHOD_END
};
char *linkspeed[] = {
"S100", "S200", "S400", "S800",
"S1600", "S3200", "undef", "undef"
};
static char *tcode_str[] = {
"WREQQ", "WREQB", "WRES", "undef",
"RREQQ", "RREQB", "RRESQ", "RRESB",
"CYCS", "LREQ", "STREAM", "LRES",
"undef", "undef", "PHY", "undef"
};
/* 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};
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;
FW_GLOCK(fc);
STAILQ_FOREACH(fwdev, &fc->devices, link)
if (fwdev->dst == dst && fwdev->status != FWDEVINVAL)
break;
FW_GUNLOCK(fc);
return fwdev;
}
/*
* Lookup fwdev by EUI64.
*/
struct fw_device *
fw_noderesolve_eui64(struct firewire_comm *fc, struct fw_eui64 *eui)
{
struct fw_device *fwdev;
FW_GLOCK(fc);
STAILQ_FOREACH(fwdev, &fc->devices, link)
if (FW_EUI64_EQUAL(fwdev->eui, *eui))
break;
FW_GUNLOCK(fc);
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 len;
struct fw_pkt *fp;
int tcode;
struct tcode_info *info;
if (xfer == NULL)
return EINVAL;
if (xfer->hand == NULL) {
printf("hand == NULL\n");
return EINVAL;
}
fp = &xfer->send.hdr;
tcode = fp->mode.common.tcode & 0xf;
info = &fc->tcode[tcode];
if (info->flag == 0) {
printf("invalid tcode=%x\n", tcode);
return EINVAL;
}
/* Reject non-CSR transactions until bus exploration completes */
if ((fc->status < FWBUSEXPLORE) &&
((tcode != FWTCODE_RREQQ) || (fp->mode.rreqq.dest_hi != 0xffff) ||
(fp->mode.rreqq.dest_lo < 0xf0000000) ||
(fp->mode.rreqq.dest_lo >= 0xf0001000))) {
xfer->resp = EAGAIN;
xfer->flag = FWXF_BUSY;
return (EAGAIN);
}
if (info->flag & FWTI_REQ)
xferq = fc->atq;
else
xferq = fc->ats;
len = info->hdr_len;
if (xfer->send.pay_len > MAXREC(fc->maxrec)) {
printf("send.pay_len > maxrec\n");
return EINVAL;
}
if (info->flag & FWTI_BLOCK_STR)
len = fp->mode.stream.len;
else if (info->flag & FWTI_BLOCK_ASY)
len = fp->mode.rresb.len;
else
len = 0;
if (len != xfer->send.pay_len) {
printf("len(%d) != send.pay_len(%d) %s(%x)\n",
len, xfer->send.pay_len, tcode_str[tcode], tcode);
return EINVAL;
}
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 EAGAIN;
}
xfer->tl = -1;
if (info->flag & FWTI_TLABEL) {
if (fw_get_tlabel(fc, xfer) < 0)
return EAGAIN;
}
xfer->resp = 0;
xfer->fc = fc;
xfer->q = xferq;
fw_asystart(xfer);
return err;
}
/*
* Wakeup blocked process.
*/
void
fw_xferwake(struct fw_xfer *xfer)
{
struct mtx *lock = &xfer->fc->wait_lock;
mtx_lock(lock);
xfer->flag |= FWXF_WAKE;
mtx_unlock(lock);
wakeup(xfer);
return;
}
int
fw_xferwait(struct fw_xfer *xfer)
{
struct mtx *lock = &xfer->fc->wait_lock;
int err = 0;
mtx_lock(lock);
while ((xfer->flag & FWXF_WAKE) == 0)
err = msleep(xfer, lock, PWAIT|PCATCH, "fw_xferwait", 0);
mtx_unlock(lock);
return (err);
}
/*
* Async. request with given xfer structure.
*/
static void
fw_asystart(struct fw_xfer *xfer)
{
struct firewire_comm *fc = xfer->fc;
/* Protect from interrupt/timeout */
FW_GLOCK(fc);
xfer->flag = FWXF_INQ;
STAILQ_INSERT_TAIL(&xfer->q->q, xfer, link);
FW_GUNLOCK(fc);
/* Kick DMA for non-mbuf xfers */
if (xfer->mbuf == NULL)
xfer->q->start(fc);
return;
}
static void
firewire_identify(driver_t *driver, device_t parent)
{
BUS_ADD_CHILD(parent, 0, "firewire", DEVICE_UNIT_ANY);
}
static int
firewire_probe(device_t dev)
{
device_set_desc(dev, "IEEE1394(FireWire) bus");
return (0);
}
/* Just use a per-packet callout? */
static void
firewire_xfer_timeout(void *arg, int pending)
{
struct firewire_comm *fc = (struct firewire_comm *)arg;
struct fw_xfer *xfer, *txfer;
struct timeval tv;
struct timeval split_timeout;
STAILQ_HEAD(, fw_xfer) xfer_timeout;
int i;
split_timeout.tv_sec = 0;
split_timeout.tv_usec = 200 * 1000; /* 200 msec */
microtime(&tv);
timevalsub(&tv, &split_timeout);
STAILQ_INIT(&xfer_timeout);
mtx_lock(&fc->tlabel_lock);
for (i = 0; i < nitems(fc->tlabels); i++) {
while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) {
if ((xfer->flag & FWXF_SENT) == 0)
/* not sent yet */
break;
if (timevalcmp(&xfer->tv, &tv, >))
/* the rests are newer than this */
break;
device_printf(fc->bdev,
"split transaction timeout: tl=0x%x flag=0x%02x\n",
i, xfer->flag);
fw_dump_hdr(&xfer->send.hdr, "send");
xfer->resp = ETIMEDOUT;
xfer->tl = -1;
STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel);
STAILQ_INSERT_TAIL(&xfer_timeout, xfer, tlabel);
}
}
mtx_unlock(&fc->tlabel_lock);
fc->timeout(fc);
STAILQ_FOREACH_SAFE(xfer, &xfer_timeout, tlabel, txfer)
xfer->hand(xfer);
}
#define WATCHDOG_HZ 10
static void
firewire_watchdog(void *arg)
{
struct firewire_softc *sc = arg;
struct firewire_comm *fc = sc->fc;
/*
* At boot stage, the device interrupt is disabled and
* we encounter a timeout easily. To avoid this,
* ignore clock ticks for a while.
*/
if (sc->watchdog_clock > WATCHDOG_HZ * 15)
taskqueue_enqueue(fc->taskqueue, &fc->task_timeout);
else
sc->watchdog_clock++;
callout_reset(&fc->timeout_callout, hz / WATCHDOG_HZ,
firewire_watchdog, sc);
}
/*
* The attach routine.
*/
static int
firewire_attach(device_t dev)
{
int unit;
struct firewire_softc *sc = device_get_softc(dev);
device_t pa = device_get_parent(dev);
struct firewire_comm *fc;
fc = device_get_softc(pa);
sc->fc = fc;
fc->status = FWBUSNOTREADY;
unit = device_get_unit(dev);
if (fc->nisodma > FWMAXNDMA)
fc->nisodma = FWMAXNDMA;
fwdev_makedev(sc);
fc->crom_src_buf = malloc(sizeof(struct crom_src_buf),
M_FW, M_NOWAIT | M_ZERO);
if (fc->crom_src_buf == NULL) {
device_printf(fc->dev,
"%s: unable to allocate crom src buffer\n", __func__);
return ENOMEM;
}
fc->topology_map = malloc(sizeof(struct fw_topology_map),
M_FW, M_NOWAIT | M_ZERO);
if (fc->topology_map == NULL) {
device_printf(fc->dev, "%s: unable to allocate topology map\n",
__func__);
free(fc->crom_src_buf, M_FW);
return ENOMEM;
}
fc->speed_map = malloc(sizeof(struct fw_speed_map),
M_FW, M_NOWAIT | M_ZERO);
if (fc->speed_map == NULL) {
device_printf(fc->dev, "%s: unable to allocate speed map\n",
__func__);
free(fc->crom_src_buf, M_FW);
free(fc->topology_map, M_FW);
return ENOMEM;
}
mtx_init(&fc->wait_lock, "fwwait", NULL, MTX_DEF);
mtx_init(&fc->tlabel_lock, "fwtlabel", NULL, MTX_DEF);
CALLOUT_INIT(&fc->timeout_callout);
CALLOUT_INIT(&fc->bmr_callout);
CALLOUT_INIT(&fc->busprobe_callout);
TASK_INIT(&fc->task_timeout, 0, firewire_xfer_timeout, fc);
sc->watchdog_clock = 0;
callout_reset(&sc->fc->timeout_callout, hz,
firewire_watchdog, sc);
/* create thread */
kproc_create(fw_bus_probe_thread, fc, &fc->probe_thread,
0, 0, "fw%d_probe", unit);
/* Locate our children */
bus_identify_children(dev);
/* launch attachement of the added children */
bus_attach_children(dev);
/* bus_reset */
FW_GLOCK(fc);
fw_busreset(fc, FWBUSNOTREADY);
FW_GUNLOCK(fc);
fc->ibr(fc);
return 0;
}
/*
* Attach it as child.
*/
static device_t
firewire_add_child(device_t dev, u_int order, const char *name, int unit)
{
device_t child;
struct firewire_softc *sc;
struct fw_child_ivars *iv;
sc = device_get_softc(dev);
child = device_add_child(dev, name, unit);
if (child) {
iv = malloc(sizeof(*iv), M_FW, M_NOWAIT | M_ZERO);
if (iv == NULL) {
device_delete_child(dev, child);
return (NULL);
}
iv->type = FW_CHILD_BUS;
iv->u.fc = sc->fc;
device_set_ivars(child, iv);
device_probe_and_attach(child);
}
return child;
}
static void
firewire_child_deleted(device_t dev, device_t child)
{
struct fw_child_ivars *iv;
iv = device_get_ivars(child);
if (iv != NULL) {
if (iv->type == FW_CHILD_UNIT && iv->u.unit != NULL)
iv->u.unit->dev = NULL;
free(iv, M_FW);
device_set_ivars(child, NULL);
}
}
static int
firewire_resume(device_t dev)
{
struct firewire_softc *sc;
sc = device_get_softc(dev);
sc->fc->status = FWBUSNOTREADY;
bus_generic_resume(dev);
return (0);
}
/*
* Detach it.
*/
static int
firewire_detach(device_t dev)
{
struct firewire_softc *sc;
struct firewire_comm *fc;
struct fw_device *fwdev, *fwdev_next;
int err;
sc = device_get_softc(dev);
fc = sc->fc;
mtx_lock(&fc->wait_lock);
fc->status = FWBUSDETACH;
wakeup(fc);
if (msleep(fc->probe_thread, &fc->wait_lock, PWAIT, "fwthr", hz * 60))
printf("firewire probe thread didn't die\n");
mtx_unlock(&fc->wait_lock);
if (fc->arq != 0 && fc->arq->maxq > 0)
fw_drain_txq(fc);
if ((err = fwdev_destroydev(sc)) != 0)
return err;
/* Remove unit children before bus_generic_detach */
for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL;
fwdev = fwdev_next) {
fwdev_next = STAILQ_NEXT(fwdev, link);
fw_remove_unit_children(fc, fwdev);
}
if ((err = bus_generic_detach(dev)) != 0)
return err;
callout_stop(&fc->timeout_callout);
callout_stop(&fc->bmr_callout);
callout_stop(&fc->busprobe_callout);
/* Drain xfers queued by children during detach or pending callouts. */
fw_drain_txq(fc);
for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL;
fwdev = fwdev_next) {
fwdev_next = STAILQ_NEXT(fwdev, link);
free(fwdev, M_FW);
}
free(fc->topology_map, M_FW);
free(fc->speed_map, M_FW);
free(fc->crom_src_buf, M_FW);
mtx_destroy(&fc->tlabel_lock);
mtx_destroy(&fc->wait_lock);
return (0);
}
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);
xfer->resp = EAGAIN;
xfer->flag = FWXF_SENTERR;
fw_xfer_done(xfer);
}
}
void
fw_drain_txq(struct firewire_comm *fc)
{
struct fw_xfer *xfer, *txfer;
STAILQ_HEAD(, fw_xfer) xfer_drain;
int i;
STAILQ_INIT(&xfer_drain);
FW_GLOCK(fc);
fw_xferq_drain(fc->atq);
fw_xferq_drain(fc->ats);
for (i = 0; i < fc->nisodma; i++)
fw_xferq_drain(fc->it[i]);
FW_GUNLOCK(fc);
mtx_lock(&fc->tlabel_lock);
for (i = 0; i < FW_NUM_TLABELS; i++)
while ((xfer = STAILQ_FIRST(&fc->tlabels[i])) != NULL) {
if (firewire_debug)
printf("tl=%d flag=%d\n", i, xfer->flag);
xfer->tl = -1;
xfer->resp = EAGAIN;
STAILQ_REMOVE_HEAD(&fc->tlabels[i], tlabel);
STAILQ_INSERT_TAIL(&xfer_drain, xfer, tlabel);
}
mtx_unlock(&fc->tlabel_lock);
STAILQ_FOREACH_SAFE(xfer, &xfer_drain, tlabel, txfer)
xfer->hand(xfer);
}
static void
fw_reset_csr(struct firewire_comm *fc)
{
int i;
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 < FW_MAX_NODES - 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) = FW_SPLIT_TIMEOUT_CYCLES << 19;
CSRARC(fc, CYCLE_TIME) = 0x0;
CSRARC(fc, BUS_TIME) = 0x0;
CSRARC(fc, BUS_MGR_ID) = FW_NO_BUS_MANAGER;
CSRARC(fc, BANDWIDTH_AV) = FW_BANDWIDTH_AVAILABLE;
CSRARC(fc, CHANNELS_AV_HI) = 0xffffffff;
CSRARC(fc, CHANNELS_AV_LO) = 0xffffffff;
CSRARC(fc, IP_CHANNELS) = (1U << 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);
}
static void
fw_init_crom(struct firewire_comm *fc)
{
struct crom_src *src;
src = &fc->crom_src_buf->src;
bzero(src, sizeof(struct crom_src));
/* BUS info sample */
src->hdr.info_len = 4;
src->businfo.bus_name = CSR_BUS_NAME_IEEE1394;
src->businfo.irmc = 1;
src->businfo.cmc = 1;
src->businfo.isc = 1;
src->businfo.bmc = 1;
src->businfo.pmc = 0;
src->businfo.cyc_clk_acc = 100;
src->businfo.max_rec = fc->maxrec;
src->businfo.max_rom = MAXROM_4;
#define FW_GENERATION_CHANGEABLE 2
src->businfo.generation = FW_GENERATION_CHANGEABLE;
src->businfo.link_spd = fc->speed;
src->businfo.eui64.hi = fc->eui.hi;
src->businfo.eui64.lo = fc->eui.lo;
STAILQ_INIT(&src->chunk_list);
fc->crom_src = src;
fc->crom_root = &fc->crom_src_buf->root;
}
static void
fw_reset_crom(struct firewire_comm *fc)
{
struct crom_src_buf *buf;
struct crom_src *src;
struct crom_chunk *root;
buf = fc->crom_src_buf;
src = fc->crom_src;
root = fc->crom_root;
STAILQ_INIT(&src->chunk_list);
bzero(root, sizeof(struct crom_chunk));
crom_add_chunk(src, NULL, root, 0);
crom_add_entry(root, CSRKEY_NCAP, 0x0083c0);
/* private company_id */
crom_add_entry(root, CSRKEY_VENDOR, CSRVAL_VENDOR_PRIVATE);
crom_add_simple_text(src, root, &buf->vendor, "FreeBSD Project");
crom_add_entry(root, CSRKEY_HW, __FreeBSD_version);
mtx_lock(&prison0.pr_mtx);
crom_add_simple_text(src, root, &buf->hw, prison0.pr_hostname);
mtx_unlock(&prison0.pr_mtx);
}
/*
* Called after bus reset.
*/
void
fw_busreset(struct firewire_comm *fc, uint32_t new_status)
{
struct firewire_dev_comm *fdc;
struct crom_src *src;
device_t *devlistp;
uint32_t *newrom;
int i, devcnt;
FW_GLOCK_ASSERT(fc);
if (fc->status == FWBUSMGRELECT)
callout_stop(&fc->bmr_callout);
fc->status = new_status;
fw_reset_csr(fc);
if (fc->status == FWBUSNOTREADY)
fw_init_crom(fc);
fw_reset_crom(fc);
/*
* Skip unit children; only bus-level children have post_busreset.
*/
if (device_get_children(fc->bdev, &devlistp, &devcnt) == 0) {
for (i = 0; i < devcnt; i++) {
struct fw_child_ivars *iv;
if (device_get_state(devlistp[i]) < DS_ATTACHED)
continue;
iv = fw_get_ivars(devlistp[i]);
if (iv == NULL || iv->type != FW_CHILD_BUS)
continue;
fdc = device_get_softc(devlistp[i]);
if (fdc->post_busreset != NULL)
fdc->post_busreset(fdc);
}
free(devlistp, M_TEMP);
}
src = &fc->crom_src_buf->src;
/*
* If the old config rom needs to be overwritten,
* bump the businfo.generation indicator to
* indicate that we need to be reprobed
* See 1394a-2000 8.3.2.5.4 for more details.
* generation starts at 2 and rolls over at 0xF
* back to 2.
*
* A generation of 0 indicates a device
* that is not 1394a-2000 compliant.
* A generation of 1 indicates a device that
* does not change it's Bus Info Block or
* Configuration ROM.
*/
#define FW_MAX_GENERATION 0xF
newrom = malloc(CROMSIZE, M_FW, M_NOWAIT | M_ZERO);
if (newrom == NULL)
goto out;
src = &fc->crom_src_buf->src;
crom_load(src, newrom, CROMSIZE);
if (bcmp(newrom, fc->config_rom, CROMSIZE) != 0) {
/* Bump generation and reload. */
src->businfo.generation++;
/* Handle generation count wraps. */
if (src->businfo.generation < FW_GENERATION_CHANGEABLE)
src->businfo.generation = FW_GENERATION_CHANGEABLE;
/* Recalculate CRC to account for generation change. */
crom_load(src, newrom, CROMSIZE);
bcopy(newrom, fc->config_rom, CROMSIZE);
}
free(newrom, M_FW);
out:;
}
/* Call once after reboot */
void fw_init(struct firewire_comm *fc)
{
int i;
#ifdef FW_VMACCESS
struct fw_xfer *xfer;
struct fw_bind *fwb;
#endif
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);
}
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;
}
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);
/* Initialize Async handlers */
STAILQ_INIT(&fc->binds);
for (i = 0; i < FW_NUM_TLABELS; i++) {
STAILQ_INIT(&fc->tlabels[i]);
}
fc->crom_src_buf = NULL;
#ifdef FW_VMACCESS
xfer = fw_xfer_alloc();
if (xfer == NULL)
return;
fwb = malloc(sizeof(struct fw_bind), M_FW, M_NOWAIT);
if (fwb == NULL) {
fw_xfer_free(xfer);
return;
}
xfer->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
}
#define BIND_CMP(addr, fwb) (((addr) < (fwb)->start)? -1 : \
((fwb)->end < (addr)) ? 1 : 0)
/*
* To lookup bound process from IEEE1394 address.
*/
struct fw_bind *
fw_bindlookup(struct firewire_comm *fc, uint16_t dest_hi, uint32_t dest_lo)
{
u_int64_t addr;
struct fw_bind *tfw, *r = NULL;
addr = ((u_int64_t)dest_hi << 32) | dest_lo;
FW_GLOCK(fc);
STAILQ_FOREACH(tfw, &fc->binds, fclist)
if (BIND_CMP(addr, tfw) == 0) {
r = tfw;
break;
}
FW_GUNLOCK(fc);
return (r);
}
/*
* To bind IEEE1394 address block to process.
*/
int
fw_bindadd(struct firewire_comm *fc, struct fw_bind *fwb)
{
struct fw_bind *tfw, *prev = NULL;
int r = 0;
if (fwb->start > fwb->end) {
printf("%s: invalid range\n", __func__);
return EINVAL;
}
FW_GLOCK(fc);
STAILQ_FOREACH(tfw, &fc->binds, fclist) {
if (fwb->end < tfw->start)
break;
prev = tfw;
}
if (prev == NULL)
STAILQ_INSERT_HEAD(&fc->binds, fwb, fclist);
else if (prev->end < fwb->start)
STAILQ_INSERT_AFTER(&fc->binds, prev, fwb, fclist);
else {
printf("%s: bind failed\n", __func__);
r = EBUSY;
}
FW_GUNLOCK(fc);
return (r);
}
/*
* To free IEEE1394 address block.
*/
int
fw_bindremove(struct firewire_comm *fc, struct fw_bind *fwb)
{
struct fw_bind *tfw;
FW_GLOCK(fc);
STAILQ_FOREACH(tfw, &fc->binds, fclist)
if (tfw == fwb) {
STAILQ_REMOVE(&fc->binds, fwb, fw_bind, fclist);
goto found;
}
printf("%s: no such binding\n", __func__);
FW_GUNLOCK(fc);
return (1);
found:
FW_GUNLOCK(fc);
return 0;
}
int
fw_xferlist_add(struct fw_xferlist *q, struct malloc_type *type,
int slen, int rlen, int n,
struct firewire_comm *fc, void *sc, void (*hand)(struct fw_xfer *))
{
int i;
struct fw_xfer *xfer;
for (i = 0; i < n; i++) {
xfer = fw_xfer_alloc_buf(type, slen, rlen);
if (xfer == NULL)
return (i);
xfer->fc = fc;
xfer->sc = sc;
xfer->hand = hand;
STAILQ_INSERT_TAIL(q, xfer, link);
}
return (n);
}
void
fw_xferlist_remove(struct fw_xferlist *q)
{
struct fw_xfer *xfer, *next;
for (xfer = STAILQ_FIRST(q); xfer != NULL; xfer = next) {
next = STAILQ_NEXT(xfer, link);
fw_xfer_free_buf(xfer);
}
STAILQ_INIT(q);
}
/*
* dump packet header
*/
static void
fw_dump_hdr(struct fw_pkt *fp, char *prefix)
{
printf("%s: dst=0x%02x tl=0x%02x rt=%d tcode=0x%x pri=0x%x "
"src=0x%03x\n", prefix,
fp->mode.hdr.dst & 0x3f,
fp->mode.hdr.tlrt >> 2, fp->mode.hdr.tlrt & 3,
fp->mode.hdr.tcode, fp->mode.hdr.pri,
fp->mode.hdr.src);
}
/*
* To free transaction label.
*/
static void
fw_tl_free(struct firewire_comm *fc, struct fw_xfer *xfer)
{
struct fw_xfer *txfer;
mtx_lock(&fc->tlabel_lock);
if (xfer->tl < 0) {
mtx_unlock(&fc->tlabel_lock);
return;
}
/* make sure the label is allocated */
STAILQ_FOREACH(txfer, &fc->tlabels[xfer->tl], tlabel)
if (txfer == xfer)
break;
if (txfer == NULL) {
printf("%s: the xfer is not in the queue "
"(tlabel=%d, flag=0x%x)\n",
__FUNCTION__, xfer->tl, xfer->flag);
fw_dump_hdr(&xfer->send.hdr, "send");
fw_dump_hdr(&xfer->recv.hdr, "recv");
kdb_backtrace();
mtx_unlock(&fc->tlabel_lock);
return;
}
STAILQ_REMOVE(&fc->tlabels[xfer->tl], xfer, fw_xfer, tlabel);
xfer->tl = -1;
mtx_unlock(&fc->tlabel_lock);
return;
}
/*
* Look up an XFER by transaction label.
* Removes the xfer from fc->tlabels only when AT transmit has completed
* (FWXF_SENT); FWXF_START xfers remain so fw_drain_txq() can find them
* on a bus reset.
*/
static struct fw_xfer *
fw_tl2xfer(struct firewire_comm *fc, int node, int tlabel, int tcode)
{
struct fw_xfer *xfer;
int req;
mtx_lock(&fc->tlabel_lock);
STAILQ_FOREACH(xfer, &fc->tlabels[tlabel], tlabel) {
if (xfer->send.hdr.mode.hdr.dst != node)
continue;
/* Validate tcode match before claiming the xfer. */
req = xfer->send.hdr.mode.hdr.tcode;
if (xfer->fc->tcode[req].valid_res != tcode) {
printf("%s: invalid response tcode "
"(0x%x for 0x%x)\n", __func__, tcode, req);
mtx_unlock(&fc->tlabel_lock);
return (NULL);
}
/*
* Remove from tlabels only after AT transmit completes
* (FWXF_SENT). Early responses (FWXF_START) must stay
* in the list until fwohci_txd() drains the descriptor.
*/
if (xfer->flag & FWXF_SENT) {
STAILQ_REMOVE(&fc->tlabels[tlabel], xfer,
fw_xfer, tlabel);
xfer->tl = -1;
}
mtx_unlock(&fc->tlabel_lock);
if (firewire_debug > 2)
printf("fw_tl2xfer: found tl=%d\n", tlabel);
return (xfer);
}
mtx_unlock(&fc->tlabel_lock);
if (firewire_debug > 1)
printf("fw_tl2xfer: not found tl=%d\n", tlabel);
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;
xfer->malloc = type;
xfer->tl = -1;
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);
if (xfer == NULL)
return (NULL);
xfer->send.pay_len = send_len;
xfer->recv.pay_len = recv_len;
if (send_len > 0) {
xfer->send.payload = malloc(send_len, type, M_NOWAIT | M_ZERO);
if (xfer->send.payload == NULL) {
fw_xfer_free(xfer);
return (NULL);
}
}
if (recv_len > 0) {
xfer->recv.payload = malloc(recv_len, type, M_NOWAIT);
if (xfer->recv.payload == NULL) {
if (xfer->send.payload != NULL)
free(xfer->send.payload, type);
fw_xfer_free(xfer);
return (NULL);
}
}
return (xfer);
}
/*
* IEEE1394 XFER post process.
*/
void
fw_xfer_done(struct fw_xfer *xfer)
{
if (xfer->hand == NULL) {
printf("hand == NULL\n");
return;
}
if (xfer->fc == NULL)
panic("fw_xfer_done: why xfer->fc is NULL?");
fw_tl_free(xfer->fc, xfer);
xfer->hand(xfer);
}
void
fw_xfer_unload(struct fw_xfer *xfer)
{
if (xfer == NULL)
return;
if (xfer->fc != NULL) {
FW_GLOCK(xfer->fc);
if (xfer->flag & FWXF_INQ) {
STAILQ_REMOVE(&xfer->q->q, xfer, fw_xfer, link);
xfer->flag &= ~FWXF_INQ;
}
FW_GUNLOCK(xfer->fc);
/*
* Ensure that any tlabel owner can't access this
* xfer after it's freed.
*/
fw_tl_free(xfer->fc, xfer);
if (firewire_debug && (xfer->flag & FWXF_START))
printf("fw_xfer_free FWXF_START\n");
}
xfer->flag = FWXF_INIT;
xfer->resp = 0;
}
/*
* To free IEEE1394 XFER structure.
*/
void
fw_xfer_free_buf(struct fw_xfer *xfer)
{
if (xfer == NULL) {
printf("%s: xfer == NULL\n", __func__);
return;
}
fw_xfer_unload(xfer);
if (xfer->send.payload != NULL)
free(xfer->send.payload, xfer->malloc);
if (xfer->recv.payload != NULL)
free(xfer->recv.payload, xfer->malloc);
free(xfer, xfer->malloc);
}
void
fw_xfer_free(struct fw_xfer *xfer)
{
if (xfer == NULL) {
printf("%s: xfer == NULL\n", __func__);
return;
}
fw_xfer_unload(xfer);
free(xfer, xfer->malloc);
}
void
fw_asy_callback_free(struct fw_xfer *xfer)
{
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(M_FWXFER);
if (xfer == NULL)
return;
xfer->fc = fc;
xfer->hand = fw_asy_callback_free;
fp = &xfer->send.hdr;
fp->mode.ld[1] = 0;
if (root_node >= 0)
fp->mode.ld[1] |= FW_PHY_ROOT_BIT |
(root_node & FW_NODE_MASK) << FW_PHY_ROOT_SHIFT;
if (gap_count >= 0)
fp->mode.ld[1] |= FW_PHY_GAP_BIT |
(gap_count & FW_NODE_MASK) << FW_PHY_GAP_SHIFT;
fp->mode.ld[2] = ~fp->mode.ld[1];
fp->mode.common.tcode |= FWTCODE_PHY;
if (firewire_debug)
device_printf(fc->bdev, "%s: root_node=%d gap_count=%d\n",
__func__, root_node, gap_count);
fw_asyreq(fc, -1, xfer);
}
/*
* Dump self ID.
*/
static void
fw_print_sid(uint32_t sid)
{
union fw_self_id *s;
s = (union fw_self_id *) &sid;
if (s->p0.sequel) {
if (s->p1.sequence_num == FW_SELF_ID_PAGE0) {
printf("node:%d p3:%d p4:%d p5:%d p6:%d p7:%d"
"p8:%d p9:%d p10:%d\n",
s->p1.phy_id, s->p1.port3, s->p1.port4,
s->p1.port5, s->p1.port6, s->p1.port7,
s->p1.port8, s->p1.port9, s->p1.port10);
} else if (s->p2.sequence_num == FW_SELF_ID_PAGE1) {
printf("node:%d p11:%d p12:%d p13:%d p14:%d p15:%d\n",
s->p2.phy_id, s->p2.port11, s->p2.port12,
s->p2.port13, s->p2.port14, s->p2.port15);
} else {
printf("node:%d Unknown Self ID Page number %d\n",
s->p1.phy_id, s->p1.sequence_num);
}
} else {
printf("node:%d link:%d gap:%d spd:%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.contender,
s->p0.power_class, s->p0.port0, s->p0.port1,
s->p0.port2, s->p0.initiated_reset, s->p0.more_packets);
}
}
/*
* To receive self ID.
*/
void fw_sidrcv(struct firewire_comm *fc, uint32_t *sid, u_int len)
{
uint32_t *p;
union fw_self_id *self_id;
u_int i, j, node, c_port = 0, i_branch = 0;
fc->sid_cnt = len / (sizeof(uint32_t) * 2);
fc->max_node = fc->nodeid & FW_NODE_MASK;
CSRARC(fc, NODE_IDS) = ((uint32_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 + (FW_MAX_NODES * FW_MAX_NODES + 3) / 4;
self_id = &fc->topology_map->self_id[0];
for (i = 0; i < fc->sid_cnt; i++) {
if (sid[1] != ~sid[0]) {
device_printf(fc->bdev,
"%s: ERROR invalid self-id packet\n", __func__);
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 (firewire_debug)
fw_print_sid(sid[0]);
node = self_id->p0.phy_id;
if (fc->max_node < node)
fc->max_node = self_id->p0.phy_id;
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++;
}
/* CRC */
fc->topology_map->crc = fw_crc16(
(uint32_t *)&fc->topology_map->generation,
fc->topology_map->crc_len * 4);
fc->speed_map->crc = fw_crc16(
(uint32_t *)&fc->speed_map->generation,
fc->speed_map->crc_len * 4);
/* byteswap and copy to CSR */
p = (uint32_t *)fc->topology_map;
for (i = 0; i <= fc->topology_map->crc_len; i++)
CSRARC(fc, TOPO_MAP + i * 4) = htonl(*p++);
p = (uint32_t *)fc->speed_map;
CSRARC(fc, SPED_MAP) = htonl(*p++);
CSRARC(fc, SPED_MAP + 4) = htonl(*p++);
/* don't byte-swap uint8_t array */
bcopy(p, &CSRARC(fc, SPED_MAP + 8), (fc->speed_map->crc_len - 1) * 4);
fc->max_hop = fc->max_node - i_branch;
device_printf(fc->bdev, "%d nodes, maxhop <= %d %s irm(%d) %s\n",
fc->max_node + 1, fc->max_hop,
(fc->irm == -1) ? "Not IRM capable" : "cable IRM",
fc->irm, (fc->irm == fc->nodeid) ? " (me) " : "");
if (try_bmr && (fc->irm != -1) && (CSRARC(fc, BUS_MGR_ID) == FW_NO_BUS_MANAGER)) {
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,
fw_try_bmr, fc);
}
} else
fc->status = FWBUSMGRDONE;
callout_reset(&fc->busprobe_callout, hz / 4, fw_bus_probe, fc);
}
/*
* To probe devices on the IEEE1394 bus.
*/
static void
fw_bus_probe(void *arg)
{
struct firewire_comm *fc;
struct fw_device *fwdev;
fc = arg;
fc->status = FWBUSEXPLORE;
/* Invalidate all devices, just after bus reset. */
if (firewire_debug)
device_printf(fc->bdev, "%s:"
"iterate and invalidate all nodes\n",
__func__);
STAILQ_FOREACH(fwdev, &fc->devices, link)
if (fwdev->status != FWDEVINVAL) {
fwdev->status = FWDEVINVAL;
fwdev->rcnt = 0;
if (firewire_debug)
device_printf(fc->bdev, "%s:"
"Invalidate Dev ID: %08x%08x\n",
__func__, fwdev->eui.hi, fwdev->eui.lo);
} else {
if (firewire_debug)
device_printf(fc->bdev, "%s:"
"Dev ID: %08x%08x already invalid\n",
__func__, fwdev->eui.hi, fwdev->eui.lo);
}
wakeup(fc);
}
static int
fw_explore_read_quads(struct fw_device *fwdev, int offset,
uint32_t *quad, int length)
{
struct fw_xfer *xfer;
uint32_t tmp;
int i, error;
for (i = 0; i < length; i++, offset += sizeof(uint32_t)) {
xfer = fwmem_read_quad(fwdev, NULL, -1, 0xffff,
0xf0000000 | offset, &tmp, fw_xferwake);
if (xfer == NULL)
return (-1);
fw_xferwait(xfer);
if (xfer->resp == 0)
quad[i] = ntohl(tmp);
error = xfer->resp;
fw_xfer_free(xfer);
if (error)
return (error);
}
return (0);
}
static int
fw_explore_csrblock(struct fw_device *fwdev, int offset, int recur)
{
int err, i, off;
struct csrdirectory *dir;
struct csrreg *reg;
dir = (struct csrdirectory *)&fwdev->csrrom[offset / sizeof(uint32_t)];
err = fw_explore_read_quads(fwdev, CSRROMOFF + offset,
(uint32_t *)dir, 1);
if (err)
return (-1);
offset += sizeof(uint32_t);
reg = (struct csrreg *)&fwdev->csrrom[offset / sizeof(uint32_t)];
err = fw_explore_read_quads(fwdev, CSRROMOFF + offset,
(uint32_t *)reg, dir->crc_len);
if (err)
return (-1);
if (!crom_crc_valid((uint32_t *)reg, dir->crc_len, dir->crc)) {
if (firewire_debug)
printf("%s: bad CRC in directory at 0x%x\n",
__func__, offset - (int)sizeof(uint32_t));
}
off = CSRROMOFF + offset + sizeof(uint32_t) * (dir->crc_len - 1);
if (fwdev->rommax < off)
fwdev->rommax = off;
if (recur == 0)
return (0);
for (i = 0; i < dir->crc_len; i++, offset += sizeof(uint32_t)) {
if ((reg[i].key & CSRTYPE_MASK) == CSRTYPE_D)
recur = 1;
else if ((reg[i].key & CSRTYPE_MASK) == CSRTYPE_L)
recur = 0;
else
continue;
off = offset + reg[i].val * sizeof(uint32_t);
if (off > CROMSIZE) {
printf("%s: invalid offset %d\n", __FUNCTION__, off);
return (-1);
}
err = fw_explore_csrblock(fwdev, off, recur);
if (err)
return (-1);
}
return (0);
}
static int
fw_explore_node(struct fw_device *dfwdev)
{
struct firewire_comm *fc;
struct fw_device *fwdev, *pfwdev, *tfwdev;
uint32_t *csr;
struct csrhdr *hdr;
struct bus_info *binfo;
int err, node;
uint32_t speed_test = 0;
fc = dfwdev->fc;
csr = dfwdev->csrrom;
node = dfwdev->dst;
/* First quad */
err = fw_explore_read_quads(dfwdev, CSRROMOFF, &csr[0], 1);
if (err) {
dfwdev->status = FWDEVINVAL;
return (-1);
}
hdr = (struct csrhdr *)&csr[0];
if (hdr->info_len != 4) {
if (firewire_debug)
device_printf(fc->bdev,
"%s: node%d: wrong bus info len(%d)\n",
__func__, node, hdr->info_len);
dfwdev->status = FWDEVINVAL;
return (-1);
}
/* bus info */
err = fw_explore_read_quads(dfwdev, CSRROMOFF + 0x04, &csr[1], 4);
if (err) {
dfwdev->status = FWDEVINVAL;
return (-1);
}
binfo = (struct bus_info *)&csr[1];
/* Root header CRC spans entire ROM; validated per-directory below. */
if (binfo->bus_name != CSR_BUS_NAME_IEEE1394) {
dfwdev->status = FWDEVINVAL;
return (-1);
}
if (firewire_debug)
device_printf(fc->bdev, "%s: node(%d) BUS INFO BLOCK:\n"
"irmc(%d) cmc(%d) isc(%d) bmc(%d) pmc(%d) "
"cyc_clk_acc(%d) max_rec(%d) max_rom(%d) "
"generation(%d) link_spd(%d)\n",
__func__, node,
binfo->irmc, binfo->cmc, binfo->isc,
binfo->bmc, binfo->pmc, binfo->cyc_clk_acc,
binfo->max_rec, binfo->max_rom,
binfo->generation, binfo->link_spd);
STAILQ_FOREACH(fwdev, &fc->devices, link)
if (FW_EUI64_EQUAL(fwdev->eui, binfo->eui64))
break;
if (fwdev == NULL) {
/* new device */
fwdev = malloc(sizeof(struct fw_device), M_FW,
M_NOWAIT | M_ZERO);
if (fwdev == NULL) {
device_printf(fc->bdev, "%s: node%d: no memory\n",
__func__, node);
return (-1);
}
fwdev->fc = fc;
fwdev->eui = binfo->eui64;
fwdev->dst = dfwdev->dst;
fwdev->maxrec = dfwdev->maxrec;
fwdev->status = dfwdev->status;
STAILQ_INIT(&fwdev->units);
/*
* Pre-1394a-2000 didn't have link_spd in
* the Bus Info block, so try and use the
* speed map value.
* 1394a-2000 compliant devices only use
* the Bus Info Block link spd value, so
* ignore the speed map altogether. SWB
*/
if (binfo->link_spd == FWSPD_S100 /* 0 */) {
device_printf(fc->bdev, "%s: "
"Pre 1394a-2000 detected\n", __func__);
fwdev->speed = fc->speed_map->speed[fc->nodeid][node];
} else
fwdev->speed = binfo->link_spd;
/*
* Test this speed with a read to the CSRROM.
* If it fails, slow down the speed and retry.
*/
while (fwdev->speed > FWSPD_S100 /* 0 */) {
err = fw_explore_read_quads(fwdev, CSRROMOFF,
&speed_test, 1);
if (err) {
device_printf(fc->bdev,
"%s: fwdev->speed(%s) decremented due to negotiation\n",
__func__, linkspeed[fwdev->speed]);
fwdev->speed--;
} else
break;
}
/*
* If the fwdev is not found in the
* fc->devices TAILQ, then we will add it.
*/
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);
} else {
fwdev->dst = node;
fwdev->status = FWDEVINIT;
/* unchanged ? */
if (bcmp(&csr[0], &fwdev->csrrom[0], sizeof(uint32_t) * FW_ROM_HEADER_QUADS) == 0) {
if (!STAILQ_EMPTY(&fwdev->units)) {
if (firewire_debug)
device_printf(fc->dev,
"node%d: crom unchanged\n", node);
fwdev->rom_changed = 0;
return (0);
}
/* Units lost after detach/reattach; re-parse. */
fwdev->rom_changed = 0;
} else {
fwdev->rom_changed = 1;
}
}
bzero(&fwdev->csrrom[0], CROMSIZE);
/* copy first quad and bus info block */
bcopy(&csr[0], &fwdev->csrrom[0], sizeof(uint32_t) * FW_ROM_HEADER_QUADS);
fwdev->rommax = CSRROMOFF + sizeof(uint32_t) * 4;
err = fw_explore_csrblock(fwdev, 0x14, 1); /* root directory */
if (err) {
if (firewire_debug)
device_printf(fc->dev, "%s: explore csrblock failed err(%d)\n",
__func__, err);
fwdev->status = FWDEVINVAL;
fwdev->csrrom[0] = 0;
}
return (err);
}
/*
* Find the self_id packet for a node, ignoring sequels.
*/
static union fw_self_id *
fw_find_self_id(struct firewire_comm *fc, int node)
{
uint32_t i;
union fw_self_id *s;
for (i = 0; i < fc->topology_map->self_id_count; i++) {
s = &fc->topology_map->self_id[i];
if (s->p0.sequel)
continue;
if (s->p0.phy_id == node)
return s;
}
return 0;
}
static void
fw_explore(struct firewire_comm *fc)
{
int node, err, i, todo, todo2, trys;
char nodes[FW_MAX_NODES - 1];
struct fw_device dfwdev;
union fw_self_id *fwsid;
todo = 0;
/* setup dummy fwdev */
dfwdev.fc = fc;
dfwdev.speed = 0;
dfwdev.maxrec = FW_MAXREC_512;
dfwdev.status = FWDEVINIT;
for (node = 0; node <= fc->max_node; node++) {
/* We don't probe myself and linkdown nodes */
if (node == fc->nodeid) {
if (firewire_debug)
device_printf(fc->bdev, "%s:"
"found myself node(%d) fc->nodeid(%d) fc->max_node(%d)\n",
__func__, node, fc->nodeid, fc->max_node);
continue;
} else if (firewire_debug) {
device_printf(fc->bdev, "%s:"
"node(%d) fc->max_node(%d) found\n",
__func__, node, fc->max_node);
}
fwsid = fw_find_self_id(fc, node);
if (!fwsid || !fwsid->p0.link_active) {
if (firewire_debug)
device_printf(fc->bdev,
"%s: node%d: link down\n",
__func__, node);
continue;
}
nodes[todo++] = node;
}
for (trys = 0; todo > 0 && trys < FW_EXPLORE_MAX_RETRIES; trys++) {
todo2 = 0;
for (i = 0; i < todo; i++) {
dfwdev.dst = nodes[i];
err = fw_explore_node(&dfwdev);
if (err)
nodes[todo2++] = nodes[i];
if (firewire_debug)
device_printf(fc->bdev,
"%s: node %d, err = %d\n",
__func__, node, err);
}
todo = todo2;
}
}
static void
fw_bus_probe_thread(void *arg)
{
struct firewire_comm *fc;
fc = arg;
mtx_lock(&fc->wait_lock);
while (fc->status != FWBUSDETACH) {
if (fc->status == FWBUSEXPLORE) {
mtx_unlock(&fc->wait_lock);
fw_explore(fc);
fc->status = FWBUSEXPDONE;
if (firewire_debug)
printf("bus_explore done\n");
fw_attach_dev(fc);
mtx_lock(&fc->wait_lock);
}
msleep((void *)fc, &fc->wait_lock, PWAIT|PCATCH, "-", 0);
}
mtx_unlock(&fc->wait_lock);
kproc_exit(0);
}
static void
fw_parse_units(struct fw_device *fwdev)
{
struct csrhdr *hdr;
struct csrdirectory *rootdir, *udir;
struct csrreg *ureg;
struct fw_unit *unit;
uint32_t spec_id, sw_version;
uint32_t rom_quads, root_off, root_len;
uint32_t reg_off, udir_qoff, udir_len;
int ri, ui, uindex;
rom_quads = CSRROMSIZE / 4;
hdr = (struct csrhdr *)fwdev->csrrom;
if (hdr->info_len <= 1)
return;
root_off = 1 + hdr->info_len;
if (root_off >= rom_quads)
return;
rootdir = (struct csrdirectory *)&fwdev->csrrom[root_off];
root_len = rootdir->crc_len;
if (root_off + 1 + root_len > rom_quads)
return;
if (!crom_crc_valid((uint32_t *)&rootdir->entry[0], root_len,
rootdir->crc) && firewire_debug)
device_printf(fwdev->fc->bdev,
"fw_parse_units: bad root directory CRC\n");
uindex = 0;
for (ri = 0; ri < (int)root_len; ri++) {
reg_off = root_off + 1 + ri;
if (reg_off >= rom_quads)
break;
if (rootdir->entry[ri].key != CROM_UDIR)
continue;
udir_qoff = reg_off + rootdir->entry[ri].val;
if (udir_qoff >= rom_quads)
continue;
udir = (struct csrdirectory *)&fwdev->csrrom[udir_qoff];
udir_len = udir->crc_len;
if (udir_qoff + 1 + udir_len > rom_quads)
continue;
if (!crom_crc_valid((uint32_t *)&udir->entry[0], udir_len,
udir->crc) && firewire_debug)
printf("fw_parse_units: bad CRC in unit dir at 0x%x\n",
udir_qoff);
spec_id = 0;
sw_version = 0;
for (ui = 0; ui < (int)udir_len; ui++) {
if (udir_qoff + 1 + ui >= rom_quads)
break;
ureg = &udir->entry[ui];
if (ureg->key == CSRKEY_SPEC)
spec_id = ureg->val;
else if (ureg->key == CSRKEY_VER)
sw_version = ureg->val;
}
if (spec_id == 0 && sw_version == 0)
continue;
unit = malloc(sizeof(*unit), M_FW, M_NOWAIT | M_ZERO);
if (unit == NULL)
continue;
unit->fwdev = fwdev;
unit->spec_id = spec_id;
unit->sw_version = sw_version;
unit->dir_offset = udir_qoff * 4;
STAILQ_INSERT_TAIL(&fwdev->units, unit, link);
uindex++;
}
if (firewire_debug && uindex > 0)
device_printf(fwdev->fc->bdev,
"node %d: %d unit director%s found\n",
fwdev->dst, uindex, uindex == 1 ? "y" : "ies");
}
static void
fw_create_unit_children(struct firewire_comm *fc, struct fw_device *fwdev)
{
struct fw_unit *unit;
struct fw_child_ivars *iv;
bus_topo_lock();
STAILQ_FOREACH(unit, &fwdev->units, link) {
if (unit->dev != NULL)
continue;
unit->dev = device_add_child(fc->bdev, NULL, DEVICE_UNIT_ANY);
if (unit->dev == NULL) {
device_printf(fc->bdev,
"failed to add unit child for node %d\n",
fwdev->dst);
continue;
}
iv = malloc(sizeof(*iv), M_FW, M_NOWAIT | M_ZERO);
if (iv == NULL) {
device_delete_child(fc->bdev, unit->dev);
unit->dev = NULL;
continue;
}
iv->type = FW_CHILD_UNIT;
iv->u.unit = unit;
device_set_ivars(unit->dev, iv);
if (firewire_debug)
device_printf(fc->bdev,
"node %d: unit spec=0x%06x ver=0x%06x\n",
fwdev->dst, unit->spec_id, unit->sw_version);
device_probe_and_attach(unit->dev);
}
bus_topo_unlock();
}
static int
fw_remove_unit_children(struct firewire_comm *fc, struct fw_device *fwdev)
{
struct fw_unit *unit, *next;
int err, ret;
ret = 0;
bus_topo_lock();
STAILQ_FOREACH_SAFE(unit, &fwdev->units, link, next) {
if (unit->dev != NULL) {
err = device_delete_child(fc->bdev, unit->dev);
if (err != 0) {
ret = err;
continue;
}
unit->dev = NULL;
}
STAILQ_REMOVE(&fwdev->units, unit, fw_unit, link);
free(unit, M_FW);
}
bus_topo_unlock();
return (ret);
}
/*
* To attach sub-devices layer onto IEEE1394 bus.
*/
static void
fw_attach_dev(struct firewire_comm *fc)
{
struct fw_device *fwdev, *next;
int i, err;
device_t *devlistp;
int devcnt;
struct firewire_dev_comm *fdc;
for (fwdev = STAILQ_FIRST(&fc->devices); fwdev != NULL; fwdev = next) {
next = STAILQ_NEXT(fwdev, link);
if (fwdev->status == FWDEVINIT) {
fwdev->status = FWDEVATTACHED;
if (fwdev->rom_changed &&
!STAILQ_EMPTY(&fwdev->units)) {
if (fw_remove_unit_children(fc, fwdev) == 0)
fwdev->rom_changed = 0;
}
if (STAILQ_EMPTY(&fwdev->units)) {
fw_parse_units(fwdev);
}
fw_create_unit_children(fc, fwdev);
} else if (fwdev->status == FWDEVINVAL) {
fwdev->rcnt++;
if (firewire_debug)
device_printf(fc->bdev, "%s:"
"fwdev->rcnt(%d), hold_count(%d)\n",
__func__, fwdev->rcnt, hold_count);
if (fwdev->rcnt > hold_count) {
/*
* Remove devices which have not been seen
* for a while.
*/
if (fw_remove_unit_children(fc, fwdev) != 0)
continue;
STAILQ_REMOVE(&fc->devices, fwdev, fw_device,
link);
free(fwdev, M_FW);
}
}
}
err = device_get_children(fc->bdev, &devlistp, &devcnt);
if (err == 0) {
for (i = 0; i < devcnt; i++) {
struct fw_child_ivars *iv;
if (device_get_state(devlistp[i]) < DS_ATTACHED)
continue;
iv = fw_get_ivars(devlistp[i]);
if (iv == NULL || iv->type != FW_CHILD_BUS)
continue;
fdc = device_get_softc(devlistp[i]);
if (fdc->post_explore != NULL)
fdc->post_explore(fdc);
}
free(devlistp, M_TEMP);
}
return;
}
/*
* To allocate unique transaction label.
*/
static int
fw_get_tlabel(struct firewire_comm *fc, struct fw_xfer *xfer)
{
u_int dst, new_tlabel;
struct fw_xfer *txfer;
dst = xfer->send.hdr.mode.hdr.dst & FW_NODE_MASK;
mtx_lock(&fc->tlabel_lock);
new_tlabel = (fc->last_tlabel[dst] + 1) & FW_TLABEL_MASK;
STAILQ_FOREACH(txfer, &fc->tlabels[new_tlabel], tlabel)
if ((txfer->send.hdr.mode.hdr.dst & FW_NODE_MASK) == dst)
break;
if (txfer == NULL) {
fc->last_tlabel[dst] = new_tlabel;
STAILQ_INSERT_TAIL(&fc->tlabels[new_tlabel], xfer, tlabel);
mtx_unlock(&fc->tlabel_lock);
xfer->tl = new_tlabel;
xfer->send.hdr.mode.hdr.tlrt = new_tlabel << 2;
if (firewire_debug > 1)
printf("fw_get_tlabel: dst=%d tl=%d\n", dst, new_tlabel);
return (new_tlabel);
}
mtx_unlock(&fc->tlabel_lock);
if (firewire_debug > 1)
printf("fw_get_tlabel: no free tlabel\n");
return (-1);
}
static void
fw_rcv_copy(struct fw_rcv_buf *rb)
{
struct fw_pkt *pkt;
u_char *p;
struct tcode_info *tinfo;
u_int res, i, len, plen;
rb->xfer->recv.spd = rb->spd;
pkt = (struct fw_pkt *)rb->vec->iov_base;
tinfo = &rb->fc->tcode[pkt->mode.hdr.tcode];
/* Copy header */
p = (u_char *)&rb->xfer->recv.hdr;
bcopy(rb->vec->iov_base, p, tinfo->hdr_len);
rb->vec->iov_base = (u_char *)rb->vec->iov_base + tinfo->hdr_len;
rb->vec->iov_len -= tinfo->hdr_len;
/* Copy payload */
p = (u_char *)rb->xfer->recv.payload;
res = rb->xfer->recv.pay_len;
/* special handling for RRESQ */
if (pkt->mode.hdr.tcode == FWTCODE_RRESQ &&
p != NULL && res >= sizeof(uint32_t)) {
*(uint32_t *)p = pkt->mode.rresq.data;
rb->xfer->recv.pay_len = sizeof(uint32_t);
return;
}
if ((tinfo->flag & FWTI_BLOCK_ASY) == 0)
return;
plen = pkt->mode.rresb.len;
for (i = 0; i < rb->nvec; i++, rb->vec++) {
len = MIN(rb->vec->iov_len, plen);
if (res < len) {
device_printf(rb->fc->bdev, "%s:"
" rcv buffer(%d) is %d bytes short.\n",
__func__, rb->xfer->recv.pay_len, len - res);
len = res;
}
bcopy(rb->vec->iov_base, p, len);
p += len;
res -= len;
plen -= len;
if (res == 0 || plen == 0)
break;
}
rb->xfer->recv.pay_len -= res;
}
/*
* Generic packet receiving process.
*/
void
fw_rcv(struct fw_rcv_buf *rb)
{
struct fw_pkt *fp, *resfp;
struct fw_bind *bind;
int tcode;
int oldstate;
fp = (struct fw_pkt *)rb->vec[0].iov_base;
tcode = fp->mode.common.tcode;
switch (tcode) {
case FWTCODE_WRES:
case FWTCODE_RRESQ:
case FWTCODE_RRESB:
case FWTCODE_LRES:
rb->xfer = fw_tl2xfer(rb->fc, fp->mode.hdr.src,
fp->mode.hdr.tlrt >> 2, fp->mode.hdr.tcode);
if (rb->xfer == NULL) {
device_printf(rb->fc->bdev, "%s: unknown response "
"%s(%x) src=0x%x tl=0x%x rt=%d data=0x%x\n",
__func__,
tcode_str[tcode], tcode,
fp->mode.hdr.src,
fp->mode.hdr.tlrt >> 2,
fp->mode.hdr.tlrt & 3,
fp->mode.rresq.data);
return;
}
fw_rcv_copy(rb);
if (rb->xfer->recv.hdr.mode.wres.rtcode != RESP_CMP)
rb->xfer->resp = EIO;
else
rb->xfer->resp = 0;
/* make sure the packet is drained in AT queue */
oldstate = rb->xfer->flag;
rb->xfer->flag = FWXF_RCVD;
switch (oldstate) {
case FWXF_SENT:
fw_xfer_done(rb->xfer);
break;
case FWXF_START:
break;
default:
device_printf(rb->fc->bdev, "%s: "
"unexpected flag 0x%02x\n", __func__,
rb->xfer->flag);
}
return;
case FWTCODE_WREQQ:
case FWTCODE_WREQB:
case FWTCODE_RREQQ:
case FWTCODE_RREQB:
case FWTCODE_LREQ:
bind = fw_bindlookup(rb->fc, fp->mode.rreqq.dest_hi,
fp->mode.rreqq.dest_lo);
if (bind == NULL) {
device_printf(rb->fc->bdev, "%s: "
"Unknown service addr 0x%04x:0x%08x %s(%x)"
" src=0x%x data=%x\n",
__func__,
fp->mode.wreqq.dest_hi,
fp->mode.wreqq.dest_lo,
tcode_str[tcode], tcode,
fp->mode.hdr.src,
ntohl(fp->mode.wreqq.data));
if (rb->fc->status == FWBUSINIT) {
device_printf(rb->fc->bdev,
"%s: cannot respond(bus reset)!\n",
__func__);
return;
}
rb->xfer = fw_xfer_alloc(M_FWXFER);
if (rb->xfer == NULL) {
return;
}
rb->xfer->send.spd = rb->spd;
rb->xfer->send.pay_len = 0;
resfp = &rb->xfer->send.hdr;
switch (tcode) {
case FWTCODE_WREQQ:
case FWTCODE_WREQB:
resfp->mode.hdr.tcode = FWTCODE_WRES;
break;
case FWTCODE_RREQQ:
resfp->mode.hdr.tcode = FWTCODE_RRESQ;
break;
case FWTCODE_RREQB:
resfp->mode.hdr.tcode = FWTCODE_RRESB;
break;
case FWTCODE_LREQ:
resfp->mode.hdr.tcode = FWTCODE_LRES;
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 = RESP_ADDRESS_ERROR;
resfp->mode.rresb.extcode = 0;
resfp->mode.rresb.len = 0;
rb->xfer->hand = fw_xfer_free;
if (fw_asyreq(rb->fc, -1, rb->xfer))
fw_xfer_free(rb->xfer);
return;
}
rb->xfer = STAILQ_FIRST(&bind->xferlist);
if (rb->xfer == NULL) {
device_printf(rb->fc->bdev, "%s: "
"Discard a packet for this bind.\n", __func__);
return;
}
STAILQ_REMOVE_HEAD(&bind->xferlist, link);
fw_rcv_copy(rb);
rb->xfer->hand(rb->xfer);
return;
default:
device_printf(rb->fc->bdev,"%s: unknown tcode %d\n",
__func__, tcode);
break;
}
}
/*
* Post process for Bus Manager election process.
*/
static void
fw_try_bmr_callback(struct fw_xfer *xfer)
{
struct firewire_comm *fc;
int bmr;
if (xfer == NULL)
return;
fc = xfer->fc;
if (xfer->resp != 0)
goto error;
if (xfer->recv.payload == NULL)
goto error;
if (xfer->recv.hdr.mode.lres.rtcode != FWRCODE_COMPLETE)
goto error;
bmr = ntohl(xfer->recv.payload[0]);
if (bmr == 0x3f)
bmr = fc->nodeid;
CSRARC(fc, BUS_MGR_ID) = fc->set_bmr(fc, bmr & 0x3f);
fw_xfer_free_buf(xfer);
fw_bmr(fc);
return;
error:
device_printf(fc->bdev, "bus manager election failed\n");
fw_xfer_free_buf(xfer);
}
/*
* To candidate Bus Manager election process.
*/
static void
fw_try_bmr(void *arg)
{
struct fw_xfer *xfer;
struct firewire_comm *fc = arg;
struct fw_pkt *fp;
int err = 0;
xfer = fw_xfer_alloc_buf(M_FWXFER, 8, 4);
if (xfer == NULL)
return;
xfer->send.spd = 0;
fc->status = FWBUSMGRELECT;
fp = &xfer->send.hdr;
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 = EXTCODE_CMP_SWAP;
fp->mode.lreq.dst = FWLOCALBUS | fc->irm;
fp->mode.lreq.dest_lo = 0xf0000000 | BUS_MGR_ID;
xfer->send.payload[0] = htonl(0x3f);
xfer->send.payload[1] = htonl(fc->nodeid);
xfer->hand = fw_try_bmr_callback;
err = fw_asyreq(fc, -1, xfer);
if (err) {
fw_xfer_free_buf(xfer);
return;
}
return;
}
#ifdef FW_VMACCESS
/*
* Software implementation for physical memory block access.
* Debug only, too slow for production use.
*/
static void
fw_vmaccess(struct fw_xfer *xfer)
{
struct fw_pkt *rfp, *sfp = NULL;
uint32_t *ld = (uint32_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) {
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),s
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;
*((uint32_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,
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 =
*(uint32_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->hand = fw_xfer_free;
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.
*/
uint16_t
fw_crc16(uint32_t *ptr, uint32_t len)
{
uint32_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 ((uint16_t) crc);
}
/*
* Find the root node, if it is not
* Cycle Master Capable, then we should
* override this and become the Cycle
* Master
*/
static int
fw_bmr(struct firewire_comm *fc)
{
struct fw_device fwdev;
union fw_self_id *self_id;
int cmstr;
uint32_t quad;
/* Check to see if the current root node is cycle master capable */
self_id = fw_find_self_id(fc, fc->max_node);
if (fc->max_node > 0) {
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, "
"forcing root to node %d\n", fc->nodeid);
fw_phy_config(fc, fc->nodeid, -1);
return 0;
}
} else
cmstr = -1;
device_printf(fc->bdev, "bus manager %d %s\n",
CSRARC(fc, BUS_MGR_ID),
(CSRARC(fc, BUS_MGR_ID) != fc->nodeid) ? "(me)" : "");
if (CSRARC(fc, BUS_MGR_ID) != fc->nodeid) {
/* We are not the bus manager */
return (0);
}
/* 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 */
quad = htonl(1 << 8);
fwmem_write_quad(&fwdev, NULL, 0/*spd*/,
0xffff, 0xf0000000 | STATE_SET, &quad, fw_asy_callback_free);
return 0;
}
int
fw_open_isodma(struct firewire_comm *fc, int tx)
{
struct fw_xferq **xferqa;
struct fw_xferq *xferq;
int i;
if (tx)
xferqa = &fc->it[0];
else
xferqa = &fc->ir[0];
FW_GLOCK(fc);
for (i = 0; i < fc->nisodma; i++) {
xferq = xferqa[i];
if ((xferq->flag & FWXFERQ_OPEN) == 0) {
xferq->flag |= FWXFERQ_OPEN;
break;
}
}
if (i == fc->nisodma) {
printf("no free dma channel (tx=%d)\n", tx);
i = -1;
}
FW_GUNLOCK(fc);
return (i);
}
static int
fw_modevent(module_t mode, int type, void *data)
{
int err = 0;
static eventhandler_tag fwdev_ehtag = NULL;
switch (type) {
case MOD_LOAD:
firewire_devclass = devclass_create("firewire");
fwdev_ehtag = EVENTHANDLER_REGISTER(dev_clone,
fwdev_clone, 0, 1000);
break;
case MOD_UNLOAD:
if (fwdev_ehtag != NULL)
EVENTHANDLER_DEREGISTER(dev_clone, fwdev_ehtag);
break;
case MOD_SHUTDOWN:
break;
default:
return (EOPNOTSUPP);
}
return (err);
}
DRIVER_MODULE(firewire, fwohci, firewire_driver, fw_modevent, NULL);
MODULE_VERSION(firewire, 1);
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