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freebsd-nq/sys/dev/musycc/musycc.c
Warner Losh a163d034fa Back out M_* changes, per decision of the TRB. 
Approved by: trb
2003-02-19 05:47:46 +00:00

1575 lines
38 KiB
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/*
* ----------------------------------------------------------------------------
* "THE BEER-WARE LICENSE" (Revision 42):
* <phk@FreeBSD.org> wrote this file. As long as you retain this notice you
* can do whatever you want with this stuff. If we meet some day, and you think
* this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
* ----------------------------------------------------------------------------
*
* $FreeBSD$
*
*
*
* Card state machine:
* -------------------
*
* This is the state engine which drives the card "as such" which in reality
* means the MUSYCC chip.
*
* State Description
*
* IDLE The card is in this state when no channels are configured.
* This is the state we leave the card in after _attach()
*
* INIT The card is being initialized
*
* RUNNING The card is running
*
* FAULT The card is hosed and being reset
*
* ------------------
* / \
* v |
* IDLE ---> INIT ---> RUNNING
* ^ |
* | |
* | v
* FAULT
*
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/conf.h>
#include <sys/kernel.h>
#include <sys/sysctl.h>
#include <sys/malloc.h>
#include <sys/bus.h>
#include <sys/mbuf.h>
#include <sys/queue.h>
#include <sys/stdint.h>
#include <machine/bus.h>
#include <machine/clock.h>
#include <sys/rman.h>
#include <machine/resource.h>
#include <pci/pcireg.h>
#include <pci/pcivar.h>
#include "pci_if.h"
#include <netgraph/ng_message.h>
#include <netgraph/netgraph.h>
#include <vm/vm.h>
#include <vm/pmap.h>
static MALLOC_DEFINE(M_MUSYCC, "musycc", "MUSYCC related");
static int maxlatency = 250;
SYSCTL_INT(_debug, OID_AUTO, musycc_maxlatency, CTLFLAG_RW, &maxlatency, 0,
"The number of milliseconds a packet is allowed to spend in the output queue. "
"If the output queue is longer than this number of milliseconds when the packet "
"arrives for output, the packet will be dropped."
);
static int debug = 0;
SYSCTL_INT(_debug, OID_AUTO, musycc_debug, CTLFLAG_RW, &debug, 0, "");
struct softc;
static void init_8370(struct softc *sc);
static u_int32_t parse_ts(const char *s, int *nbit);
/*
* Device driver initialization stuff
*/
static devclass_t musycc_devclass;
/* XXX: Notice, these babies must be aligned to 2k boundaries [5-7] */
struct groupr {
u_int32_t thp[32]; /* Transmit Head Pointer [5-29] */
u_int32_t tmp[32]; /* Transmit Message Pointer [5-30] */
u_int32_t rhp[32]; /* Receive Head Pointer [5-29] */
u_int32_t rmp[32]; /* Receive Message Pointer [5-30] */
u_int8_t ttsm[128]; /* Time Slot Map [5-22] */
u_int8_t tscm[256]; /* Subchannel Map [5-24] */
u_int32_t tcct[32]; /* Channel Configuration [5-26] */
u_int8_t rtsm[128]; /* Time Slot Map [5-22] */
u_int8_t rscm[256]; /* Subchannel Map [5-24] */
u_int32_t rcct[32]; /* Channel Configuration [5-26] */
u_int32_t __glcd; /* Global Configuration Descriptor [5-10] */
u_int32_t __iqp; /* Interrupt Queue Pointer [5-36] */
u_int32_t __iql; /* Interrupt Queue Length [5-36] */
u_int32_t grcd; /* Group Configuration Descriptor [5-16] */
u_int32_t mpd; /* Memory Protection Descriptor [5-18] */
u_int32_t mld; /* Message Length Descriptor [5-20] */
u_int32_t pcd; /* Port Configuration Descriptor [5-19] */
u_int32_t __rbist; /* Receive BIST status [5-4] */
u_int32_t __tbist; /* Receive BIST status [5-4] */
};
struct globalr {
u_int32_t gbp; /* Group Base Pointer */
u_int32_t dacbp; /* Dual Address Cycle Base Pointer */
u_int32_t srd; /* Service Request Descriptor */
u_int32_t isd; /* Interrupt Service Descriptor */
u_int32_t __thp[28]; /* Transmit Head Pointer [5-29] */
u_int32_t __tmp[32]; /* Transmit Message Pointer [5-30] */
u_int32_t __rhp[32]; /* Receive Head Pointer [5-29] */
u_int32_t __rmp[32]; /* Receive Message Pointer [5-30] */
u_int8_t ttsm[128]; /* Time Slot Map [5-22] */
u_int8_t tscm[256]; /* Subchannel Map [5-24] */
u_int32_t tcct[32]; /* Channel Configuration [5-26] */
u_int8_t rtsm[128]; /* Time Slot Map [5-22] */
u_int8_t rscm[256]; /* Subchannel Map [5-24] */
u_int32_t rcct[32]; /* Channel Configuration [5-26] */
u_int32_t glcd; /* Global Configuration Descriptor [5-10] */
u_int32_t iqp; /* Interrupt Queue Pointer [5-36] */
u_int32_t iql; /* Interrupt Queue Length [5-36] */
u_int32_t grcd; /* Group Configuration Descriptor [5-16] */
u_int32_t mpd; /* Memory Protection Descriptor [5-18] */
u_int32_t mld; /* Message Length Descriptor [5-20] */
u_int32_t pcd; /* Port Configuration Descriptor [5-19] */
u_int32_t rbist; /* Receive BIST status [5-4] */
u_int32_t tbist; /* Receive BIST status [5-4] */
};
/*
* Because the chan_group must be 2k aligned we create this super
* structure so we can use the remaining 476 bytes for something useful
*/
struct mycg {
struct groupr cg;
};
struct mdesc {
u_int32_t status;
u_int32_t data;
u_int32_t next;
/* Software only */
struct mbuf *m;
struct mdesc *snext;
};
#define NPORT 8
#define NHDLC 32
#define NIQD 32
struct softc;
struct schan {
enum {DOWN, UP} state;
struct softc *sc;
int chan;
u_int32_t ts;
char hookname[8];
hook_p hook;
u_long rx_drop; /* mbuf allocation failures */
u_long tx_limit;
u_long tx_pending;
struct mdesc *tx_next_md; /* next MD */
struct mdesc *tx_last_md; /* last MD */
int rx_last_md; /* index to next MD */
int nmd; /* count of MD's. */
time_t last_recv;
time_t last_rdrop;
time_t last_rxerr;
u_long crc_error;
u_long dribble_error;
u_long long_error;
u_long abort_error;
u_long short_error;
u_long txn, rxn;
time_t last_xmit;
time_t last_txerr;
time_t last_txdrop;
u_long tx_drop;
#if 0
u_long rx_error;
u_long overflow_error;
int last_error;
int prev_error;
#endif
};
enum framing {WHOKNOWS, E1, E1U, T1, T1U};
enum clocksource {EXT, INT};
struct softc {
enum framing framing;
enum clocksource clocksource;
int nhooks;
u_int32_t last;
struct csoftc *csc;
u_int32_t *ds8370;
void *ds847x;
struct globalr *reg;
struct groupr *ram;
struct mycg *mycg;
struct mdesc *mdt[NHDLC];
struct mdesc *mdr[NHDLC];
node_p node; /* NG node */
char nodename[NG_NODELEN + 1]; /* NG nodename */
struct schan *chan[NHDLC];
u_long cnt_ferr;
u_long cnt_cerr;
u_long cnt_lcv;
u_long cnt_febe;
u_long cnt_berr;
u_long cnt_fred;
u_long cnt_cofa;
u_long cnt_sef;
};
/*
* SoftC for the entire card.
*/
struct csoftc {
enum { C_IDLE, C_INIT, C_RUNNING, C_FAULT } state;
int unit, bus, slot;
LIST_ENTRY(csoftc) list;
device_t f[2];
struct resource *irq[2];
void *intrhand[2];
vm_offset_t physbase[2];
u_char *virbase[2];
u_int creg, *cregp;
int nchan;
struct softc serial[NPORT];
struct globalr *reg;
struct globalr *ram;
u_int32_t iqd[NIQD];
};
/*
*
*/
#define NG_NODETYPE "lmc1504"
static ng_constructor_t musycc_constructor;
static ng_rcvmsg_t musycc_rcvmsg;
static ng_shutdown_t musycc_shutdown;
static ng_newhook_t musycc_newhook;
static ng_connect_t musycc_connect;
static ng_rcvdata_t musycc_rcvdata;
static ng_disconnect_t musycc_disconnect;
static struct ng_type ngtypestruct = {
NG_ABI_VERSION,
NG_NODETYPE,
NULL,
musycc_constructor,
musycc_rcvmsg,
musycc_shutdown,
musycc_newhook,
NULL,
musycc_connect,
musycc_rcvdata,
musycc_disconnect,
NULL
};
/*
*
*/
static u_int32_t
parse_ts(const char *s, int *nbit)
{
unsigned r;
int i, j;
char *p;
r = 0;
j = -1;
*nbit = 0;
while(*s) {
i = strtol(s, &p, 0);
if (i < 0 || i > 31)
return (0);
while (j != -1 && j < i) {
r |= 1 << j++;
(*nbit)++;
}
j = -1;
r |= 1 << i;
(*nbit)++;
if (*p == ',') {
s = p + 1;
continue;
} else if (*p == '-') {
j = i + 1;
s = p + 1;
continue;
} else if (!*p) {
break;
} else {
return (0);
}
}
return (r);
}
/*
*
*/
static LIST_HEAD(, csoftc) sc_list = LIST_HEAD_INITIALIZER(&sc_list);
static void
poke_847x(void *dummy)
{
static int count;
int i;
struct csoftc *csc;
timeout(poke_847x, NULL, 1);
LIST_FOREACH(csc, &sc_list, list) {
count++;
i = (csc->creg >> 24 & 0xf);
csc->creg &= ~0xf000000;
i++;
csc->creg |= (i & 0xf) << 24;
*csc->cregp = csc->creg;
#if 0
for (i = 0; i < sc->nchan; i++) {
if (sc->serial[i].last == 0xffffffff) {
sc->serial[i].reg->srd = 0;
sc->serial[i].last = 0;
return;
}
}
#endif
}
}
static void
init_card(struct csoftc *csc)
{
printf("init_card(%p)\n", csc);
csc->state = C_INIT;
csc->reg->srd = 0x100;
tsleep(csc, PZERO | PCATCH, "icard", hz / 10);
csc->reg->gbp = vtophys(csc->ram);
csc->ram->glcd = 0x3f30; /* XXX: designer magic */
csc->ram->iqp = vtophys(csc->iqd);
csc->ram->iql = NIQD - 1;
csc->ram->dacbp = 0; /* 32bit only */
csc->reg->srd = csc->serial[0].last = 0x400;
tsleep(&csc->serial[0].last, PZERO | PCATCH, "con1", hz);
timeout(poke_847x, NULL, 1);
csc->state = C_RUNNING;
}
static void
init_ctrl(struct softc *sc)
{
int i;
printf("init_ctrl(%p) [%s] [%08x]\n", sc, sc->nodename, sc->csc->reg->glcd);
init_8370(sc);
tsleep(sc, PZERO | PCATCH, "ds8370", hz);
printf("%s: glcd: [%08x]\n", sc->nodename, sc->csc->reg->glcd);
sc->reg->gbp = vtophys(sc->ram);
sc->ram->grcd = 0x00000001; /* RXENBL */
sc->ram->grcd |= 0x00000002; /* TXENBL */
sc->ram->grcd |= 0x00000004; /* SUBDSBL */
if (sc->framing == E1 || sc->framing == T1)
sc->ram->grcd |= 0x00000008; /* OOFABT */
else
sc->ram->grcd |= 0x00000000; /* !OOFABT */
sc->ram->grcd |= 0x00000020; /* MSKCOFA */
sc->ram->grcd |= 0x00000440; /* POLLTH=1 */
sc->ram->mpd = 0; /* Memory Protection NI [5-18] */
sc->ram->pcd = 0x0000001; /* PORTMD=1 (E1/32ts) */
sc->ram->pcd |= 1 << 5; /* TSYNC_EDGE */
sc->ram->pcd |= 1 << 9; /* TRITX */
/* Message length descriptor */
/* XXX: MTU */
sc->ram->mld = 1600;
sc->ram->mld |= (1600 << 16);
for (i = 0; i < NHDLC; i++) {
sc->ram->ttsm[i] = 0;
sc->ram->rtsm[i] = 0;
}
sc->reg->srd = sc->last = 0x500;
tsleep(&sc->last, PZERO | PCATCH, "con1", hz);
sc->reg->srd = sc->last = 0x520;
tsleep(&sc->last, PZERO | PCATCH, "con1", hz);
}
/*
*
*/
static void
status_chans(struct softc *sc, char *s)
{
int i;
struct schan *scp;
s += strlen(s);
for (i = 0; i < NHDLC; i++) {
scp = sc->chan[i];
if (scp == NULL)
continue;
sprintf(s + strlen(s), "c%2d:", i);
sprintf(s + strlen(s), " ts %08x", scp->ts);
sprintf(s + strlen(s), " RX %lus/%lus",
(long)(time_second - scp->last_recv),
(long)(time_second - scp->last_rxerr));
sprintf(s + strlen(s), " TX %lus/%lus/%lus",
(long)(time_second - scp->last_xmit),
(long)(time_second - scp->last_txerr),
(long)(time_second - scp->last_txdrop));
sprintf(s + strlen(s), " TXdrop %lu Pend %lu",
scp->tx_drop,
scp->tx_pending);
sprintf(s + strlen(s), " CRC %lu Dribble %lu Long %lu Short %lu Abort %lu",
scp->crc_error,
scp->dribble_error,
scp->long_error,
scp->short_error,
scp->abort_error);
sprintf(s + strlen(s), "\n TX: %lu RX: %lu\n",
scp->txn, scp->rxn);
}
}
/*
*
*/
static void
status_8370(struct softc *sc, char *s)
{
u_int32_t *p = sc->ds8370;
s += strlen(s);
sprintf(s, "Framer: "); s += strlen(s);
switch (sc->framing) {
case WHOKNOWS: sprintf(s, "(unconfigured)\n"); break;
case E1: sprintf(s, "(e1)\n"); break;
case E1U: sprintf(s, "(e1u)\n"); break;
case T1: sprintf(s, "(t1)\n"); break;
case T1U: sprintf(s, "(t1u)\n"); break;
default: sprintf(s, "(mode %d XXX?)\n", sc->framing); break;
}
s += strlen(s);
sprintf(s, " Red alarms:"); s += strlen(s);
if (p[0x47] & 0x08) { sprintf(s, " ALOS"); s += strlen(s); }
if (p[0x47] & 0x04) { sprintf(s, " LOS"); s += strlen(s); }
if (sc->framing == E1 || sc->framing == T1) {
if (p[0x47] & 0x02) { sprintf(s, " LOF"); s += strlen(s); }
}
sprintf(s, "\n Yellow alarms:"); s += strlen(s);
if (p[0x47] & 0x80) { sprintf(s, " RMYEL"); s += strlen(s); }
if (p[0x47] & 0x40) { sprintf(s, " RYEL"); s += strlen(s); }
sprintf(s, "\n Blue alarms:"); s += strlen(s);
if (p[0x47] & 0x10) { sprintf(s, " AIS"); s += strlen(s); }
sprintf(s, "\n"); s += strlen(s);
sprintf(s, "\n Various alarms:"); s += strlen(s);
if (p[0x48] & 0x10) { sprintf(s, " TSHORT"); s += strlen(s); }
sprintf(s, "\n Counters:"); s += strlen(s);
if (sc->framing == E1) {
sprintf(s, " FERR=%lu", sc->cnt_ferr); s += strlen(s);
}
sprintf(s, " CERR=%lu", sc->cnt_cerr); s += strlen(s);
sprintf(s, " LCV=%lu", sc->cnt_lcv); s += strlen(s);
sprintf(s, " FEBE=%lu", sc->cnt_febe); s += strlen(s);
sprintf(s, " BERR=%lu", sc->cnt_berr); s += strlen(s);
sprintf(s, " FRED=%lu", sc->cnt_fred); s += strlen(s);
sprintf(s, " COFA=%lu", sc->cnt_cofa); s += strlen(s);
sprintf(s, " SEF=%lu", sc->cnt_sef); s += strlen(s);
sprintf(s, "\n"); s += strlen(s);
}
static void
dump_8370(struct softc *sc, char *s, int offset)
{
int i, j;
u_int32_t *p = sc->ds8370;
s += strlen(s);
for (i = 0; i < 0x100; i += 16) {
sprintf(s, "%03x: ", i + offset);
s += strlen(s);
for (j = 0; j < 0x10; j ++) {
sprintf(s, " %02x", p[i + j + offset] & 0xff);
s += strlen(s);
}
sprintf(s, "\n");
s += strlen(s);
}
}
static void
init_8370(struct softc *sc)
{
int i;
u_int32_t *p = sc->ds8370;
p[0x001] = 0x80; /* CR0 - Reset */
DELAY(20);
p[0x001] = 0x00; /* CR0 - E1, RFRAME: FAS only */
DELAY(20);
if (sc->clocksource == INT)
p[0x002] = 0x40; /* JAT_CR - XXX */
else
p[0x002] = 0x20; /* JAT_CR - XXX */
p[0x00D] = 0x01; /* IER6 - ONESEC */
p[0x014] = 0x00; /* LOOP - */
p[0x015] = 0x00; /* DL3_TS - */
p[0x016] = 0x00; /* DL3_BIT - */
p[0x017] = 0x00; /* DL3_BIT - */
p[0x018] = 0xFF; /* PIO - XXX */
p[0x019] = 0x3c; /* POE - CLADO_OE|RCKO_OE */
if (sc->clocksource == INT)
p[0x01A] = 0x37; /* CMUX - RSBCKI(RSBCKI), TSBCKI(CLADO), CLADO(RCKO), TCKI(CLADO) */
else
p[0x01A] = 0x37; /* CMUX - RSBCKI(RSBCKI), TSBCKI(RSBCKI), CLADO(RCKO), TCKI(RCKO) */
/* I.431/G.775 */
p[0x020] = 0x41; /* LIU_CR - SQUELCH */
p[0x022] = 0xb1; /* RLIU_CR - */
p[0x024] = 0x1d; /* VGA_MAX - */
p[0x027] = 0xba; /* DSLICE - */
p[0x028] = 0xda; /* EQ_OUT - */
p[0x02a] = 0xa6; /* PRE_EQ - */
if (sc->framing == E1U || sc->framing == T1U)
p[0x040] = 0x49; /* RCRO - XXX */
else
p[0x040] = 0x09; /* RCRO - XXX */
p[0x041] = 0x00; /* RPATT - XXX */
p[0x045] = 0x00; /* RALM - XXX */
p[0x046] = 0x05; /* LATCH - LATCH_CNT|LATCH_ALM */
p[0x068] = 0x4c; /* TLIU_CR - TERM|Pulse=6 */
p[0x070] = 0x04; /* TCR0 - TFRAME=4 */
if (sc->framing == E1U || sc->framing == T1U)
p[0x071] = 0x41; /* TCR1 - TZCS */
else
p[0x071] = 0x51; /* TCR1 - TZCS */
if (sc->framing == E1U || sc->framing == T1U)
p[0x072] = 0x00;
else
p[0x072] = 0x1b; /* TCR1 - INS_YEL|INS_MF|INS_CRC|INS_FBIT */
p[0x073] = 0x00; /* TERROR */
p[0x074] = 0x00; /* TMAN */
if (sc->framing == E1U || sc->framing == T1U)
p[0x075] = 0x0; /* TALM */
else
p[0x075] = 0x10; /* TALM - AUTO_YEL */
p[0x076] = 0x00; /* TPATT */
p[0x077] = 0x00; /* TLP */
p[0x090] = 0x05; /* CLAD_CR - XXX */
p[0x091] = 0x01; /* CSEL - 2048kHz */
if (sc->framing == E1U || sc->framing == T1U) {
p[0x0a0] = 0x00;
p[0x0a6] = 0x00;
p[0x0b1] = 0x00;
}
p[0x0d0] = 0x46; /* SBI_CR - SBI=6 */
p[0x0d1] = 0x70; /* RSB_CR - XXX */
p[0x0d2] = 0x00; /* RSYNC_BIT - 0 */
p[0x0d3] = 0x00; /* RSYNC_TS - 0 */
p[0x0d4] = 0x30; /* TSB_CR - XXX */
p[0x0d5] = 0x00; /* TSYNC_BIT - 0 */
p[0x0d6] = 0x00; /* TSYNC_TS - 0 */
if (sc->framing == E1U || sc->framing == T1U)
p[0x0d7] = 0x05; /* RSIG_CR - 0 | FRZ_OFF*/
else
p[0x0d7] = 0x01; /* RSIG_CR - 0 */
p[0x0d8] = 0x00; /* RSIG_FRM - 0 */
for (i = 0; i < 32; i ++) {
p[0x0e0 + i] = 0x0d; /* SBC$i - RINDO|TINDO|ASSIGN */
p[0x100 + i] = 0x00; /* TPC$i - 0 */
p[0x180 + i] = 0x00; /* RPC$i - 0 */
}
}
/*
* Interrupts
*/
static void
musycc_intr0_tx_eom(struct softc *sc, int ch)
{
struct schan *sch;
struct mdesc *md;
sch = sc->chan[ch];
if (sch == NULL || sch->state != UP) {
/* XXX: this should not happen once the driver is done */
printf("Xmit packet on uninitialized channel %d\n", ch);
}
if (sc->mdt[ch] == NULL)
return; /* XXX: can this happen ? */
for (;;) {
md = sch->tx_last_md;
if (md->status == 0)
break;
if (md->status & 0x80000000)
break; /* Not our mdesc, done */
sch->tx_last_md = md->snext;
md->data = 0;
if (md->m != NULL) {
sch->tx_pending -= md->m->m_pkthdr.len;
m_freem(md->m);
md->m = NULL;
}
md->status = 0;
}
}
/*
* Receive interrupt on controller *sc, channel ch
*
* We perambulate the Rx descriptor ring until we hit
* a mdesc which isn't ours to take.
*/
static void
musycc_intr0_rx_eom(struct softc *sc, int ch)
{
u_int32_t status, error;
struct schan *sch;
struct mbuf *m, *m2;
struct mdesc *md;
sch = sc->chan[ch];
if (sch == NULL || sch->state != UP) {
/* XXX: this should not happen once the driver is done */
printf("Received packet on uninitialized channel %d\n", ch);
return;
}
if (sc->mdr[ch] == NULL)
return; /* XXX: can this happen ? */
for (;;) {
md = &sc->mdr[ch][sch->rx_last_md];
status = md->status;
if (!(status & 0x80000000))
break; /* Not our mdesc, done */
m = md->m;
m->m_len = m->m_pkthdr.len = status & 0x3fff;
error = (status >> 16) & 0xf;
if (error == 0) {
MGETHDR(m2, M_DONTWAIT, MT_DATA);
if (m2 != NULL) {
MCLGET(m2, M_DONTWAIT);
if((m2->m_flags & M_EXT) != 0) {
/* Substitute the mbuf+cluster. */
md->m = m2;
md->data = vtophys(m2->m_data);
/* Pass the received mbuf upwards. */
sch->last_recv = time_second;
NG_SEND_DATA_ONLY(error, sch->hook, m);
} else {
/*
* We didn't get a mbuf cluster,
* drop received packet, free the
* mbuf we cannot use and recycle
* the mbuf+cluster we already had.
*/
m_freem(m2);
sch->last_rdrop = time_second;
sch->rx_drop++;
}
} else {
/*
* We didn't get a mbuf, drop received packet
* and recycle the "old" mbuf+cluster.
*/
sch->last_rdrop = time_second;
sch->rx_drop++;
}
} else if (error == 9) {
sch->last_rxerr = time_second;
sch->crc_error++;
} else if (error == 10) {
sch->last_rxerr = time_second;
sch->dribble_error++;
} else if (error == 11) {
sch->last_rxerr = time_second;
sch->abort_error++;
} else if (error == 12) {
sch->last_rxerr = time_second;
sch->long_error++;
} else {
sch->last_rxerr = time_second;
/* Receive error, print some useful info */
printf("%s %s: RX 0x%08x ", sch->sc->nodename,
sch->hookname, status);
/* Don't print a lot, just the begining will do */
if (m->m_len > 16)
m->m_len = m->m_pkthdr.len = 16;
m_print(m);
printf("\n");
}
md->status = 1600; /* XXX: MTU */
/* Check next mdesc in the ring */
if (++sch->rx_last_md >= sch->nmd)
sch->rx_last_md = 0;
}
}
static void
musycc_intr0(void *arg)
{
int i, j, g, ch, ev, er;
struct csoftc *csc;
u_int32_t u, u1, n, c;
struct softc *sc;
csc = arg;
for (;;) {
u = csc->reg->isd;
c = u & 0x7fff;
n = u >> 16;
if (c == 0)
return;
if (debug & 1)
printf("%s: IRQ: %08x n = %d c = %d\n", csc->serial[0].nodename, u, n, c);
for (i = 0; i < c; i++) {
j = (n + i) % NIQD;
u1 = csc->iqd[j];
g = (u1 >> 29) & 0x3;
g |= (u1 >> (14-2)) & 0x4;
ch = (u1 >> 24) & 0x1f;
ev = (u1 >> 20) & 0xf;
er = (u1 >> 16) & 0xf;
sc = &csc->serial[g];
if (debug & 2) {
printf("%08x %d", u1, g);
printf("/%s", u1 & 0x80000000 ? "T" : "R");
printf("/%02d", ch);
printf(" %02d", ev);
printf(":%02d", er);
printf("\n");
}
switch (ev) {
case 1: /* SACK Service Request Acknowledge */
#if 0
printf("%s: SACK: %08x group=%d", sc->nodename, csc->iqd[j], g);
printf("/%s", csc->iqd[j] & 0x80000000 ? "T" : "R");
printf(" cmd %08x (%08x) \n", sc->last, sc->reg->srd);
#endif
sc->last = 0xffffffff;
wakeup(&sc->last);
break;
case 5: /* CHABT Change To Abort Code (0x7e -> 0xff) */
case 6: /* CHIC Change To Idle Code (0xff -> 0x7e) */
break;
case 3: /* EOM End Of Message */
if (csc->iqd[j] & 0x80000000)
musycc_intr0_tx_eom(sc, ch);
else
musycc_intr0_rx_eom(sc, ch);
break;
case 0:
if (er == 13) { /* SHT */
sc->chan[ch]->last_rxerr = time_second;
sc->chan[ch]->short_error++;
break;
}
default:
musycc_intr0_tx_eom(sc, ch);
musycc_intr0_rx_eom(sc, ch);
#if 1
printf("huh ? %08x %d", u1, g);
printf("/%s", u1 & 0x80000000 ? "T" : "R");
printf("/%02d", ch);
printf(" %02d", ev);
printf(":%02d", er);
printf("\n");
#endif
}
csc->iqd[j] = 0xffffffff;
j++;
j %= NIQD;
csc->reg->isd = j << 16;
}
}
}
static void
musycc_intr1(void *arg)
{
int i;
struct csoftc *csc;
struct softc *sc;
u_int32_t *u;
u_int8_t irr;
csc = arg;
for (i = 0; i < csc->nchan; i++) {
sc = &csc->serial[i];
u = sc->ds8370;
irr = u[3];
if (irr == 0)
continue;
if (u[0x5] & 1) { /* ONESEC */
sc->cnt_ferr += u[0x50] & 0xff;
sc->cnt_ferr += (u[0x51] & 0xff) << 8;
sc->cnt_cerr += u[0x52] & 0xff;
sc->cnt_cerr += (u[0x53] & 0xff) << 8;
sc->cnt_lcv += u[0x54] & 0xff;
sc->cnt_lcv += (u[0x55] & 0xff) << 8;
sc->cnt_febe += u[0x56] & 0xff;
sc->cnt_febe += (u[0x57] & 0xff) << 8;
sc->cnt_berr += u[0x58] & 0xff;
sc->cnt_berr += (u[0x59] & 0xff) << 8;
sc->cnt_fred += (u[0x5a] & 0xf0) >> 4;
sc->cnt_cofa += (u[0x5a] & 0x0c) >> 2;
sc->cnt_sef += u[0x5a] & 0x03;
}
if (debug & 4) {
int j;
printf("musycc_intr1:%d %02x", i, irr);
for (j = 4; j < 0x14; j++)
printf(" %02x", u[j] & 0xff);
printf("\n");
}
}
}
/*
* NetGraph Stuff
*/
static int
musycc_constructor(node_p node)
{
return (EINVAL);
}
static int
musycc_shutdown(node_p nodep)
{
return (EINVAL);
}
static void
musycc_config(node_p node, char *set, char *ret)
{
struct softc *sc;
struct csoftc *csc;
enum framing wframing;
int i;
sc = NG_NODE_PRIVATE(node);
csc = sc->csc;
if (csc->state == C_IDLE)
init_card(csc);
while (csc->state != C_RUNNING)
tsleep(&csc->state, PZERO | PCATCH, "crun", hz/10);
if (set != NULL) {
if (!strncmp(set, "line ", 5)) {
wframing = sc->framing;
if (!strcmp(set, "line e1")) {
wframing = E1;
} else if (!strcmp(set, "line e1u")) {
wframing = E1U;
} else {
strcat(ret, "ENOGROK\n");
return;
}
if (wframing == sc->framing)
return;
if (sc->nhooks > 0) {
sprintf(ret, "Cannot change line when %d hooks open\n", sc->nhooks);
return;
}
sc->framing = wframing;
init_ctrl(sc);
return;
}
if (!strcmp(set, "clock source internal")) {
sc->clocksource = INT;
init_ctrl(sc);
} else if (!strcmp(set, "clock source line")) {
sc->clocksource = EXT;
init_ctrl(sc);
} else if (!strcmp(set, "show 8370 0")) {
dump_8370(sc, ret, 0);
} else if (!strcmp(set, "show 8370 1")) {
dump_8370(sc, ret, 0x100);
} else if (!strncmp(set, "creg", 4)) {
i = strtol(set + 5, 0, 0);
printf("set creg %d\n", i);
csc->creg = 0xfe | (i << 24);
*csc->cregp = csc->creg;
/*
} else if (!strcmp(set, "reset")) {
reset_group(sc, ret);
} else if (!strcmp(set, "reset all")) {
reset_card(sc, ret);
*/
} else {
printf("%s CONFIG SET [%s]\n", sc->nodename, set);
goto barf;
}
return;
}
if (sc->framing == E1)
strcat(ret, "line e1\n");
else if (sc->framing == E1U)
strcat(ret, "line e1u\n");
if (sc->clocksource == INT)
strcat(ret, "clock source internal\n");
else
strcat(ret, "clock source line\n");
return;
barf:
strcpy(ret, "Syntax Error\n");
strcat(ret, "\tline {e1|e1u}\n");
strcat(ret, "\tshow 8370 {0|1}\n");
return;
}
/*
* Handle status and config enquiries.
* Respond with a synchronous response.
*/
static int
musycc_rcvmsg(node_p node, item_p item, hook_p lasthook)
{
struct softc *sc;
struct ng_mesg *resp = NULL;
char *s, *r;
int error = 0;
struct ng_mesg *msg;
NGI_GET_MSG(item, msg);
sc = NG_NODE_PRIVATE(node);
if (msg->header.typecookie != NGM_GENERIC_COOKIE)
goto out;
if (msg->header.cmd == NGM_TEXT_STATUS) {
NG_MKRESPONSE(resp, msg,
sizeof(struct ng_mesg) + NG_TEXTRESPONSE, M_NOWAIT);
if (resp == NULL) {
error = ENOMEM;
goto out;
}
s = (char *)resp->data;
status_8370(sc, s);
status_chans(sc,s);
resp->header.arglen = strlen(s) + 1;
NG_FREE_MSG(msg);
} else if (msg->header.cmd == NGM_TEXT_CONFIG) {
if (msg->header.arglen) {
s = (char *)msg->data;
} else {
s = NULL;
}
NG_MKRESPONSE(resp, msg,
sizeof(struct ng_mesg) + NG_TEXTRESPONSE, M_NOWAIT);
if (resp == NULL) {
error = ENOMEM;
goto out;
}
r = (char *)resp->data;
*r = '\0';
musycc_config(node, s, r);
resp->header.arglen = strlen(r) + 1;
NG_FREE_MSG(msg);
} else {
error = EINVAL;
}
out:
/* Take care of synchronous response, if any */
NG_RESPOND_MSG(error, node, item, resp);
NG_FREE_MSG(msg);
return (error);
}
static int
musycc_newhook(node_p node, hook_p hook, const char *name)
{
struct softc *sc;
struct csoftc *csc;
struct schan *sch;
u_int32_t ts, chan;
int nbit;
sc = NG_NODE_PRIVATE(node);
csc = sc->csc;
while (csc->state != C_RUNNING)
tsleep(&csc->state, PZERO | PCATCH, "crun", hz/10);
if (sc->framing == WHOKNOWS)
return (EINVAL);
if (name[0] != 't' || name[1] != 's')
return (EINVAL);
ts = parse_ts(name + 2, &nbit);
if (ts == 0)
return (EINVAL);
chan = ffs(ts) - 1;
if (sc->framing == E1U && nbit == 32)
;
else if (sc->framing == T1U && nbit == 24)
;
else if (ts & 1)
return (EINVAL);
if (sc->chan[chan] == NULL) {
MALLOC(sch, struct schan *, sizeof(*sch), M_MUSYCC, M_WAITOK | M_ZERO);
sch->sc = sc;
sch->state = DOWN;
sch->chan = chan;
sprintf(sch->hookname, name); /* XXX overflow ? */
sc->chan[chan] = sch;
} else if (sc->chan[chan]->state == UP) {
return (EBUSY);
}
sc->nhooks++;
sch = sc->chan[chan];
sch->ts = ts;
sch->hook = hook;
sch->tx_limit = nbit * 8;
NG_HOOK_SET_PRIVATE(hook, sch);
return(0);
}
static int
musycc_rcvdata(hook_p hook, item_p item)
{
struct softc *sc;
struct csoftc *csc;
struct schan *sch;
struct mdesc *md, *md0;
u_int32_t ch, u, u0, len;
struct mbuf *m2;
struct mbuf *m;
sch = NG_HOOK_PRIVATE(hook);
sc = sch->sc;
csc = sc->csc;
ch = sch->chan;
if (csc->state != C_RUNNING) {
printf("csc->state = %d\n", csc->state);
NG_FREE_ITEM(item);
return (0);
}
if (sch->state != UP) {
printf("sch->state = %d\n", sch->state);
NG_FREE_ITEM(item);
return (0);
}
NGI_GET_M(item, m);
NG_FREE_ITEM(item);
if (sch->tx_pending + m->m_pkthdr.len > sch->tx_limit * maxlatency) {
sch->tx_drop++;
sch->last_txdrop = time_second;
NG_FREE_M(m);
return (0);
}
/* find out if we have enough txmd's */
m2 = m;
md = sch->tx_next_md;
for (len = m2->m_pkthdr.len; len; m2 = m2->m_next) {
if (m2->m_len == 0)
continue;
if (md->status != 0) {
sch->tx_drop++;
sch->last_txdrop = time_second;
NG_FREE_M(m);
return (0);
}
len -= m2->m_len;
md = md->snext;
}
m2 = m;
md = md0 = sch->tx_next_md;
u0 = 0;
for (len = m->m_pkthdr.len; len > 0; m = m->m_next) {
if (m->m_len == 0)
continue;
if (md->status != 0) {
printf("Out of tx md(2)\n");
sch->last_txerr = time_second;
sch->tx_drop++;
sch->last_txdrop = time_second;
NG_FREE_M(m);
break;
}
md->data = vtophys(m->m_data);
if (md == md0)
u = 0x00000000; /* OWNER = CPU */
else
u = 0x80000000; /* OWNER = MUSYCC */
u |= m->m_len;
len -= m->m_len;
if (len > 0) {
md->m = NULL;
if (md == md0)
u0 = u;
else
md->status = u;
md = md->snext;
continue;
}
u |= 0x20000000; /* EOM */
md->m = m2;
sch->tx_pending += m2->m_pkthdr.len;
if (md == md0) {
u |= 0x80000000; /* OWNER = MUSYCC */
md->status = u;
} else {
md->status = u;
md0->status = u0 | 0x80000000; /* OWNER = MUSYCC */
}
sch->last_xmit = time_second;
sch->tx_next_md = md->snext;
}
sch->txn++;
return (0);
}
static int
musycc_connect(hook_p hook)
{
struct softc *sc;
struct csoftc *csc;
struct schan *sch;
int nts, nbuf, i, nmd, ch;
struct mbuf *m;
sch = NG_HOOK_PRIVATE(hook);
sc = sch->sc;
csc = sc->csc;
ch = sch->chan;
while (csc->state != C_RUNNING)
tsleep(&csc->state, PZERO | PCATCH, "crun", hz/10);
if (sch->state == UP)
return (0);
sch->state = UP;
/* Setup the Time Slot Map */
nts = 0;
for (i = ch; i < 32; i++) {
if (sch->ts & (1 << i)) {
sc->ram->rtsm[i] = ch | (4 << 5);
sc->ram->ttsm[i] = ch | (4 << 5);
nts++;
}
}
/*
* Find the length of the first run of timeslots.
* XXX: find the longest instead.
*/
nbuf = 0;
for (i = ch; i < 32; i++) {
if (sch->ts & (1 << i))
nbuf++;
else
break;
}
printf("Connect ch= %d ts= %08x nts= %d nbuf = %d\n",
ch, sch->ts, nts, nbuf);
/* Reread the Time Slot Map */
sc->reg->srd = sc->last = 0x1800;
tsleep(&sc->last, PZERO | PCATCH, "con1", hz);
sc->reg->srd = sc->last = 0x1820;
tsleep(&sc->last, PZERO | PCATCH, "con2", hz);
/* Set the channel mode */
sc->ram->tcct[ch] = 0x2800; /* HDLC-FCS16 | MAXSEL[2] */
sc->ram->rcct[ch] = 0x2800; /* HDLC-FCS16 | MAXSEL[2] */
/*
* Allocate the FIFO space
* We don't do subchanneling so we can use 128 dwords [4-13]
*/
sc->ram->tcct[ch] |= (1 + 2 * (nbuf - 1)) << 16; /* BUFFLEN */
sc->ram->rcct[ch] |= (1 + 2 * (nbuf - 1)) << 16; /* BUFFLEN */
sc->ram->tcct[ch] |= ((ch * 2) << 24); /* BUFFLOC */
sc->ram->rcct[ch] |= ((ch * 2) << 24); /* BUFFLOC */
/* Reread the Channel Configuration Descriptor for this channel */
sc->reg->srd = sc->last = 0x0b00 + ch;
tsleep(&sc->last, PZERO | PCATCH, "con3", hz);
sc->reg->srd = sc->last = 0x0b20 + ch;
tsleep(&sc->last, PZERO | PCATCH, "con4", hz);
/*
* Figure out how many receive buffers we want: 10 + nts * 2
* 1 timeslot, 50 bytes packets -> 68msec
* 31 timeslots, 50 bytes packets -> 14msec
*/
sch->nmd = nmd = 200 + nts * 4;
sch->rx_last_md = 0;
MALLOC(sc->mdt[ch], struct mdesc *,
sizeof(struct mdesc) * nmd, M_MUSYCC, M_WAITOK);
MALLOC(sc->mdr[ch], struct mdesc *,
sizeof(struct mdesc) * nmd, M_MUSYCC, M_WAITOK);
for (i = 0; i < nmd; i++) {
if (i == nmd - 1) {
sc->mdt[ch][i].snext = &sc->mdt[ch][0];
sc->mdt[ch][i].next = vtophys(sc->mdt[ch][i].snext);
sc->mdr[ch][i].snext = &sc->mdr[ch][0];
sc->mdr[ch][i].next = vtophys(sc->mdr[ch][i].snext);
} else {
sc->mdt[ch][i].snext = &sc->mdt[ch][i + 1];
sc->mdt[ch][i].next = vtophys(sc->mdt[ch][i].snext);
sc->mdr[ch][i].snext = &sc->mdr[ch][i + 1];
sc->mdr[ch][i].next = vtophys(sc->mdr[ch][i].snext);
}
sc->mdt[ch][i].status = 0;
sc->mdt[ch][i].m = NULL;
sc->mdt[ch][i].data = 0;
MGETHDR(m, M_TRYWAIT, MT_DATA);
if (m == NULL)
goto errfree;
MCLGET(m, M_TRYWAIT);
if ((m->m_flags & M_EXT) == 0) {
/* We've waited mbuf_wait and still got nothing.
We're calling with M_TRYWAIT anyway - a little
defensive programming costs us very little - if
anything at all in the case of error. */
m_free(m);
goto errfree;
}
sc->mdr[ch][i].m = m;
sc->mdr[ch][i].data = vtophys(m->m_data);
sc->mdr[ch][i].status = 1600; /* MTU */
}
sch->tx_last_md = sch->tx_next_md = &sc->mdt[ch][0];
/* Configure it into the chip */
sc->ram->thp[ch] = vtophys(&sc->mdt[ch][0]);
sc->ram->tmp[ch] = vtophys(&sc->mdt[ch][0]);
sc->ram->rhp[ch] = vtophys(&sc->mdr[ch][0]);
sc->ram->rmp[ch] = vtophys(&sc->mdr[ch][0]);
/* Activate the Channel */
sc->reg->srd = sc->last = 0x0800 + ch;
tsleep(&sc->last, PZERO | PCATCH, "con4", hz);
sc->reg->srd = sc->last = 0x0820 + ch;
tsleep(&sc->last, PZERO | PCATCH, "con3", hz);
NG_HOOK_FORCE_QUEUE(NG_HOOK_PEER(hook));
return (0);
errfree:
while (i > 0) {
/* Don't leak all the previously allocated mbufs in this loop */
i--;
m_free(sc->mdr[ch][i].m);
}
FREE(sc->mdt[ch], M_MUSYCC);
FREE(sc->mdr[ch], M_MUSYCC);
return (ENOBUFS);
}
static int
musycc_disconnect(hook_p hook)
{
struct softc *sc;
struct csoftc *csc;
struct schan *sch;
int i, ch;
sch = NG_HOOK_PRIVATE(hook);
sc = sch->sc;
csc = sc->csc;
ch = sch->chan;
while (csc->state != C_RUNNING)
tsleep(&csc->state, PZERO | PCATCH, "crun", hz/10);
/* Deactivate the channel */
sc->reg->srd = sc->last = 0x0900 + sch->chan;
tsleep(&sc->last, PZERO | PCATCH, "con3", hz);
sc->reg->srd = sc->last = 0x0920 + sch->chan;
tsleep(&sc->last, PZERO | PCATCH, "con4", hz);
if (sch->state == DOWN)
return (0);
sch->state = DOWN;
sc->ram->thp[ch] = 0;
sc->ram->tmp[ch] = 0;
sc->ram->rhp[ch] = 0;
sc->ram->rmp[ch] = 0;
for (i = 0; i < sch->nmd; i++) {
if (sc->mdt[ch][i].m != NULL)
m_freem(sc->mdt[ch][i].m);
if (sc->mdr[ch][i].m != NULL)
m_freem(sc->mdr[ch][i].m);
}
FREE(sc->mdt[ch], M_MUSYCC);
sc->mdt[ch] = NULL;
FREE(sc->mdr[ch], M_MUSYCC);
sc->mdr[ch] = NULL;
for (i = 0; i < 32; i++) {
if (sch->ts & (1 << i)) {
sc->ram->rtsm[i] = 0;
sc->ram->ttsm[i] = 0;
}
}
sc->nhooks--;
sch->tx_pending = 0;
return (0);
}
/*
* PCI initialization stuff
*/
static int
musycc_probe(device_t self)
{
char desc[40];
if (sizeof(struct groupr) != 1572) {
printf("sizeof(struct groupr) = %zd, should be 1572\n",
sizeof(struct groupr));
return(ENXIO);
}
if (sizeof(struct globalr) != 1572) {
printf("sizeof(struct globalr) = %zd, should be 1572\n",
sizeof(struct globalr));
return(ENXIO);
}
if (sizeof(struct mycg) > 2048) {
printf("sizeof(struct mycg) = %zd, should be <= 2048\n",
sizeof(struct mycg));
return(ENXIO);
}
switch (pci_get_devid(self)) {
case 0x8471109e: strcpy(desc, "CN8471 MUSYCC"); break;
case 0x8472109e: strcpy(desc, "CN8472 MUSYCC"); break;
case 0x8474109e: strcpy(desc, "CN8474 MUSYCC"); break;
case 0x8478109e: strcpy(desc, "CN8478 MUSYCC"); break;
default:
return (ENXIO);
}
switch (pci_get_function(self)) {
case 0: strcat(desc, " Network controller"); break;
case 1: strcat(desc, " Ebus bridge"); break;
default:
return (ENXIO);
}
device_set_desc_copy(self, desc);
return 0;
}
static int
musycc_attach(device_t self)
{
struct csoftc *csc;
struct resource *res;
struct softc *sc;
int rid, i, error;
int f;
u_int32_t *u32p, u;
static int once;
if (!once) {
once++;
error = ng_newtype(&ngtypestruct);
if (error != 0)
printf("ng_newtype() failed %d\n", error);
}
printf("We have %zd pad bytes in mycg\n", 2048 - sizeof(struct mycg));
f = pci_get_function(self);
/* For function zero allocate a csoftc */
if (f == 0) {
MALLOC(csc, struct csoftc *, sizeof(*csc), M_MUSYCC, M_WAITOK | M_ZERO);
csc->bus = pci_get_bus(self);
csc->slot = pci_get_slot(self);
LIST_INSERT_HEAD(&sc_list, csc, list);
} else {
LIST_FOREACH(csc, &sc_list, list) {
if (csc->bus != pci_get_bus(self))
continue;
if (csc->slot != pci_get_slot(self))
continue;
break;
}
}
csc->f[f] = self;
device_set_softc(self, csc);
rid = PCIR_MAPS;
res = bus_alloc_resource(self, SYS_RES_MEMORY, &rid,
0, ~0, 1, RF_ACTIVE);
if (res == NULL) {
device_printf(self, "Could not map memory\n");
return ENXIO;
}
csc->virbase[f] = (u_char *)rman_get_virtual(res);
csc->physbase[f] = rman_get_start(res);
/* Allocate interrupt */
rid = 0;
csc->irq[f] = bus_alloc_resource(self, SYS_RES_IRQ, &rid, 0, ~0,
1, RF_SHAREABLE | RF_ACTIVE);
if (csc->irq[f] == NULL) {
printf("couldn't map interrupt\n");
return(ENXIO);
}
error = bus_setup_intr(self, csc->irq[f], INTR_TYPE_NET,
f == 0 ? musycc_intr0 : musycc_intr1, csc, &csc->intrhand[f]);
if (error) {
printf("couldn't set up irq\n");
return(ENXIO);
}
if (f == 0)
return (0);
for (i = 0; i < 2; i++)
printf("f%d: device %p virtual %p physical %08jx\n",
i, csc->f[i], csc->virbase[i], (uintmax_t)csc->physbase[i]);
csc->reg = (struct globalr *)csc->virbase[0];
csc->reg->glcd = 0x3f30; /* XXX: designer magic */
u32p = (u_int32_t *)csc->virbase[1];
u = u32p[0x1200];
if ((u & 0xffff0000) != 0x13760000) {
printf("Not a LMC1504 (ID is 0x%08x). Bailing out.\n", u);
return(ENXIO);
}
csc->nchan = (u >> 8) & 0xf;
printf("Found <LanMedia LMC1504 Rev %d Chan %d>\n", (u >> 12) & 0xf, csc->nchan);
csc->creg = 0xfe;
csc->cregp = &u32p[0x1000];
*csc->cregp = csc->creg;
for (i = 0; i < csc->nchan; i++) {
sc = &csc->serial[i];
sc->csc = csc;
sc->last = 0xffffffff;
sc->ds8370 = (u_int32_t *)
(csc->virbase[1] + i * 0x800);
sc->ds847x = csc->virbase[0] + i * 0x800;
sc->reg = (struct globalr *)
(csc->virbase[0] + i * 0x800);
MALLOC(sc->mycg, struct mycg *,
sizeof(struct mycg), M_MUSYCC, M_WAITOK | M_ZERO);
sc->ram = &sc->mycg->cg;
error = ng_make_node_common(&ngtypestruct, &sc->node);
if (error) {
printf("ng_make_node_common() failed %d\n", error);
continue;
}
NG_NODE_SET_PRIVATE(sc->node, sc);
sprintf(sc->nodename, "sync-%d-%d-%d",
csc->bus,
csc->slot,
i);
error = ng_name_node(sc->node, sc->nodename);
/* XXX Apparently failure isn't a problem */
}
csc->ram = (struct globalr *)&csc->serial[0].mycg->cg;
sc = &csc->serial[0];
sc->reg->srd = sc->last = 0x100;
csc->state = C_IDLE;
return 0;
}
static device_method_t musycc_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, musycc_probe),
DEVMETHOD(device_attach, musycc_attach),
DEVMETHOD(device_suspend, bus_generic_suspend),
DEVMETHOD(device_resume, bus_generic_resume),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
{0, 0}
};
static driver_t musycc_driver = {
"musycc",
musycc_methods,
0
};
DRIVER_MODULE(musycc, pci, musycc_driver, musycc_devclass, 0, 0);
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