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freebsd-skq/sys/dev/mn/if_mn.c
Scott Long c68534f1d5 Update PCI drivers to no longer look at the MEMIO-enabled bit in the PCI 
command register.  The lazy BAR allocation code in FreeBSD sometimes
disables this bit when it detects a range conflict, and will re-enable
it on demand when a driver allocates the BAR.  Thus, the bit is no longer
a reliable indication of capability, and should not be checked.  This
results in the elimination of a lot of code from drivers, and also gives
the opportunity to simplify a lot of drivers to use a helper API to set
the busmaster enable bit.

This changes fixes some recent reports of disk controllers and their
associated drives/enclosures disappearing during boot.

Submitted by:	jhb
Reviewed by:	jfv, marius, achadd, achim
MFC after:	1 day
2013-08-12 23:30:01 +00:00

1433 lines
32 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
* ----------------------------------------------------------------------------
*/
/*
* Driver for Siemens reference design card "Easy321-R1".
*
* This card contains a FALC54 E1/T1 framer and a MUNICH32X 32-channel HDLC
* controller.
*
* The driver supports E1 mode with up to 31 channels. We send CRC4 but don't
* check it coming in.
*
* The FALC54 and MUNICH32X have far too many registers and weird modes for
* comfort, so I have not bothered typing it all into a "fooreg.h" file,
* you will (badly!) need the documentation anyway if you want to mess with
* this gadget.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
/*
* Stuff to describe the MUNIC32X and FALC54 chips.
*/
#define M32_CHAN 32 /* We have 32 channels */
#define M32_TS 32 /* We have 32 timeslots */
#define NG_MN_NODE_TYPE "mn"
#include <sys/param.h>
#include <sys/kernel.h>
#include <sys/sysctl.h>
#include <sys/bus.h>
#include <sys/mbuf.h>
#include <sys/systm.h>
#include <sys/malloc.h>
#include <dev/pci/pcireg.h>
#include <dev/pci/pcivar.h>
#include "pci_if.h"
#include <machine/bus.h>
#include <machine/resource.h>
#include <sys/rman.h>
#include <vm/vm.h>
#include <vm/pmap.h>
#include <netgraph/ng_message.h>
#include <netgraph/netgraph.h>
static int mn_maxlatency = 1000;
SYSCTL_INT(_debug, OID_AUTO, mn_maxlatency, CTLFLAG_RW,
&mn_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."
);
#ifndef NMN
/* Most machines don't support more than 4 busmaster PCI slots, if even that many */
#define NMN 4
#endif
/* From: PEB 20321 data sheet, p187, table 22 */
struct m32xreg {
u_int32_t conf, cmd, stat, imask;
u_int32_t fill10, piqba, piql, fill1c;
u_int32_t mode1, mode2, ccba, txpoll;
u_int32_t tiqba, tiql, riqba, riql;
u_int32_t lconf, lccba, fill48, ltran;
u_int32_t ltiqba, ltiql, lriqba, lriql;
u_int32_t lreg0, lreg1, lreg2, lreg3;
u_int32_t lreg4, lreg5, lre6, lstat;
u_int32_t gpdir, gpdata, gpod, fill8c;
u_int32_t ssccon, sscbr, ssctb, sscrb;
u_int32_t ssccse, sscim, fillab, fillac;
u_int32_t iomcon1, iomcon2, iomstat, fillbc;
u_int32_t iomcit0, iomcit1, iomcir0, iomcir1;
u_int32_t iomtmo, iomrmo, filld8, filldc;
u_int32_t mbcmd, mbdata1, mbdata2, mbdata3;
u_int32_t mbdata4, mbdata5, mbdata6, mbdata7;
};
/* From: PEB 2254 data sheet, p80, table 10 */
struct f54wreg {
u_int16_t xfifo;
u_int8_t cmdr, mode, rah1, rah2, ral1, ral2;
u_int8_t ipc, ccr1, ccr3, pre, rtr1, rtr2, rtr3, rtr4;
u_int8_t ttr1, ttr2, ttr3, ttr4, imr0, imr1, imr2, imr3;
u_int8_t imr4, fill19, fmr0, fmr1, fmr2, loop, xsw, xsp;
u_int8_t xc0, xc1, rc0, rc1, xpm0, xpm1, xpm2, tswm;
u_int8_t test1, idle, xsa4, xsa5, xsa6, xsa7, xsa8, fmr3;
u_int8_t icb1, icb2, icb3, icb4, lim0, lim1, pcd, pcr;
u_int8_t lim2, fill39[7];
u_int8_t fill40[8];
u_int8_t fill48[8];
u_int8_t fill50[8];
u_int8_t fill58[8];
u_int8_t dec, fill61, test2, fill63[5];
u_int8_t fill68[8];
u_int8_t xs[16];
};
/* From: PEB 2254 data sheet, p117, table 10 */
struct f54rreg {
u_int16_t rfifo;
u_int8_t fill2, mode, rah1, rah2, ral1, ral2;
u_int8_t ipc, ccr1, ccr3, pre, rtr1, rtr2, rtr3, rtr4;
u_int8_t ttr1, ttr2, ttr3, ttr4, imr0, imr1, imr2, imr3;
u_int8_t imr4, fill19, fmr0, fmr1, fmr2, loop, xsw, xsp;
u_int8_t xc0, xc1, rc0, rc1, xpm0, xpm1, xpm2, tswm;
u_int8_t test, idle, xsa4, xsa5, xsa6, xsa7, xsa8, fmr13;
u_int8_t icb1, icb2, icb3, icb4, lim0, lim1, pcd, pcr;
u_int8_t lim2, fill39[7];
u_int8_t fill40[8];
u_int8_t fill48[4], frs0, frs1, rsw, rsp;
u_int16_t fec, cvc, cec1, ebc;
u_int16_t cec2, cec3;
u_int8_t rsa4, rsa5, rsa6, rsa7;
u_int8_t rsa8, rsa6s, tsr0, tsr1, sis, rsis;
u_int16_t rbc;
u_int8_t isr0, isr1, isr2, isr3, fill6c, fill6d, gis, vstr;
u_int8_t rs[16];
};
/* Transmit & receive descriptors */
struct trxd {
u_int32_t flags;
vm_offset_t next;
vm_offset_t data;
u_int32_t status; /* only used for receive */
struct mbuf *m; /* software use only */
struct trxd *vnext; /* software use only */
};
/* Channel specification */
struct cspec {
u_int32_t flags;
vm_offset_t rdesc;
vm_offset_t tdesc;
u_int32_t itbs;
};
struct m32_mem {
vm_offset_t csa;
u_int32_t ccb;
u_int32_t reserve1[2];
u_int32_t ts[M32_TS];
struct cspec cs[M32_CHAN];
vm_offset_t crxd[M32_CHAN];
vm_offset_t ctxd[M32_CHAN];
};
struct mn_softc;
struct sockaddr;
struct rtentry;
static int mn_probe(device_t self);
static int mn_attach(device_t self);
static void mn_create_channel(struct mn_softc *sc, int chan);
static int mn_reset(struct mn_softc *sc);
static struct trxd * mn_alloc_desc(void);
static void mn_free_desc(struct trxd *dp);
static void mn_intr(void *xsc);
static u_int32_t mn_parse_ts(const char *s, int *nbit);
#ifdef notyet
static void m32_dump(struct mn_softc *sc);
static void f54_dump(struct mn_softc *sc);
static void mn_fmt_ts(char *p, u_int32_t ts);
#endif /* notyet */
static void f54_init(struct mn_softc *sc);
static ng_constructor_t ngmn_constructor;
static ng_rcvmsg_t ngmn_rcvmsg;
static ng_shutdown_t ngmn_shutdown;
static ng_newhook_t ngmn_newhook;
static ng_connect_t ngmn_connect;
static ng_rcvdata_t ngmn_rcvdata;
static ng_disconnect_t ngmn_disconnect;
static struct ng_type mntypestruct = {
.version = NG_ABI_VERSION,
.name = NG_MN_NODE_TYPE,
.constructor = ngmn_constructor,
.rcvmsg = ngmn_rcvmsg,
.shutdown = ngmn_shutdown,
.newhook = ngmn_newhook,
.connect = ngmn_connect,
.rcvdata = ngmn_rcvdata,
.disconnect = ngmn_disconnect,
};
static MALLOC_DEFINE(M_MN, "mn", "Mx driver related");
#define NIQB 64
struct schan {
enum {DOWN, UP} state;
struct mn_softc *sc;
int chan;
u_int32_t ts;
char name[8];
struct trxd *r1, *rl;
struct trxd *x1, *xl;
hook_p hook;
time_t last_recv;
time_t last_rxerr;
time_t last_xmit;
u_long rx_error;
u_long short_error;
u_long crc_error;
u_long dribble_error;
u_long long_error;
u_long abort_error;
u_long overflow_error;
int last_error;
int prev_error;
u_long tx_pending;
u_long tx_limit;
};
enum framing {WHOKNOWS, E1, E1U, T1, T1U};
struct mn_softc {
int unit;
device_t dev;
struct resource *irq;
void *intrhand;
enum framing framing;
int nhooks;
void *m0v, *m1v;
vm_offset_t m0p, m1p;
struct m32xreg *m32x;
struct f54wreg *f54w;
struct f54rreg *f54r;
struct m32_mem m32_mem;
u_int32_t tiqb[NIQB];
u_int32_t riqb[NIQB];
u_int32_t piqb[NIQB];
u_int32_t ltiqb[NIQB];
u_int32_t lriqb[NIQB];
char name[8];
u_int32_t falc_irq, falc_state, framer_state;
struct schan *ch[M32_CHAN];
char nodename[NG_NODESIZ];
node_p node;
u_long cnt_fec;
u_long cnt_cvc;
u_long cnt_cec1;
u_long cnt_ebc;
u_long cnt_cec2;
u_long cnt_cec3;
u_long cnt_rbc;
};
static int
ngmn_constructor(node_p node)
{
return (EINVAL);
}
static int
ngmn_shutdown(node_p nodep)
{
return (EINVAL);
}
static void
ngmn_config(node_p node, char *set, char *ret)
{
struct mn_softc *sc;
enum framing wframing;
sc = NG_NODE_PRIVATE(node);
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;
#if 1
f54_init(sc);
#else
mn_reset(sc);
#endif
} else {
printf("%s CONFIG SET [%s]\n", sc->nodename, set);
strcat(ret, "ENOGROK\n");
return;
}
}
}
static int
ngmn_rcvmsg(node_p node, item_p item, hook_p lasthook)
{
struct mn_softc *sc;
struct ng_mesg *resp = NULL;
struct schan *sch;
char *s, *r;
int pos, i;
struct ng_mesg *msg;
NGI_GET_MSG(item, msg);
sc = NG_NODE_PRIVATE(node);
if (msg->header.typecookie != NGM_GENERIC_COOKIE) {
NG_FREE_ITEM(item);
NG_FREE_MSG(msg);
return (EINVAL);
}
if (msg->header.cmd != NGM_TEXT_CONFIG &&
msg->header.cmd != NGM_TEXT_STATUS) {
NG_FREE_ITEM(item);
NG_FREE_MSG(msg);
return (EINVAL);
}
NG_MKRESPONSE(resp, msg, sizeof(struct ng_mesg) + NG_TEXTRESPONSE,
M_NOWAIT);
if (resp == NULL) {
NG_FREE_ITEM(item);
NG_FREE_MSG(msg);
return (ENOMEM);
}
if (msg->header.arglen)
s = (char *)msg->data;
else
s = NULL;
r = (char *)resp->data;
*r = '\0';
if (msg->header.cmd == NGM_TEXT_CONFIG) {
ngmn_config(node, s, r);
resp->header.arglen = strlen(r) + 1;
NG_RESPOND_MSG(i, node, item, resp);
NG_FREE_MSG(msg);
return (0);
}
pos = 0;
pos += sprintf(pos + r,"Framer status %b;\n", sc->framer_state, "\20"
"\40LOS\37AIS\36LFA\35RRA"
"\34AUXP\33NMF\32LMFA\31frs0.0"
"\30frs1.7\27TS16RA\26TS16LOS\25TS16AIS"
"\24TS16LFA\23frs1.2\22XLS\21XLO"
"\20RS1\17rsw.6\16RRA\15RY0"
"\14RY1\13RY2\12RY3\11RY4"
"\10SI1\7SI2\6rsp.5\5rsp.4"
"\4rsp.3\3RSIF\2RS13\1RS15");
pos += sprintf(pos + r," Framing errors: %lu", sc->cnt_fec);
pos += sprintf(pos + r," Code Violations: %lu\n", sc->cnt_cvc);
pos += sprintf(pos + r," Falc State %b;\n", sc->falc_state, "\20"
"\40LOS\37AIS\36LFA\35RRA"
"\34AUXP\33NMF\32LMFA\31frs0.0"
"\30frs1.7\27TS16RA\26TS16LOS\25TS16AIS"
"\24TS16LFA\23frs1.2\22XLS\21XLO"
"\20RS1\17rsw.6\16RRA\15RY0"
"\14RY1\13RY2\12RY3\11RY4"
"\10SI1\7SI2\6rsp.5\5rsp.4"
"\4rsp.3\3RSIF\2RS13\1RS15");
pos += sprintf(pos + r, " Falc IRQ %b\n", sc->falc_irq, "\20"
"\40RME\37RFS\36T8MS\35RMB\34CASC\33CRC4\32SA6SC\31RPF"
"\30b27\27RDO\26ALLS\25XDU\24XMB\23b22\22XLSC\21XPR"
"\20FAR\17LFA\16MFAR\15T400MS\14AIS\13LOS\12RAR\11RA"
"\10ES\7SEC\6LMFA16\5AIS16\4RA16\3API\2SLN\1SLP");
for (i = 0; i < M32_CHAN; i++) {
if (!sc->ch[i])
continue;
sch = sc->ch[i];
pos += sprintf(r + pos, " Chan %d <%s> ",
i, NG_HOOK_NAME(sch->hook));
pos += sprintf(r + pos, " Last Rx: ");
if (sch->last_recv)
pos += sprintf(r + pos, "%lu s",
(unsigned long)(time_second - sch->last_recv));
else
pos += sprintf(r + pos, "never");
pos += sprintf(r + pos, ", last RxErr: ");
if (sch->last_rxerr)
pos += sprintf(r + pos, "%lu s",
(unsigned long)(time_second - sch->last_rxerr));
else
pos += sprintf(r + pos, "never");
pos += sprintf(r + pos, ", last Tx: ");
if (sch->last_xmit)
pos += sprintf(r + pos, "%lu s\n",
(unsigned long)(time_second - sch->last_xmit));
else
pos += sprintf(r + pos, "never\n");
pos += sprintf(r + pos, " RX error(s) %lu", sch->rx_error);
pos += sprintf(r + pos, " Short: %lu", sch->short_error);
pos += sprintf(r + pos, " CRC: %lu", sch->crc_error);
pos += sprintf(r + pos, " Mod8: %lu", sch->dribble_error);
pos += sprintf(r + pos, " Long: %lu", sch->long_error);
pos += sprintf(r + pos, " Abort: %lu", sch->abort_error);
pos += sprintf(r + pos, " Overflow: %lu\n", sch->overflow_error);
pos += sprintf(r + pos, " Last error: %b Prev error: %b\n",
sch->last_error, "\20\7SHORT\5CRC\4MOD8\3LONG\2ABORT\1OVERRUN",
sch->prev_error, "\20\7SHORT\5CRC\4MOD8\3LONG\2ABORT\1OVERRUN");
pos += sprintf(r + pos, " Xmit bytes pending %ld\n",
sch->tx_pending);
}
resp->header.arglen = pos + 1;
/* Take care of synchronous response, if any */
NG_RESPOND_MSG(i, node, item, resp);
NG_FREE_MSG(msg);
return (0);
}
static int
ngmn_newhook(node_p node, hook_p hook, const char *name)
{
u_int32_t ts, chan;
struct mn_softc *sc;
int nbit;
sc = NG_NODE_PRIVATE(node);
if (name[0] != 't' || name[1] != 's')
return (EINVAL);
ts = mn_parse_ts(name + 2, &nbit);
printf("%d bits %x\n", nbit, ts);
if (sc->framing == E1 && (ts & 1))
return (EINVAL);
if (sc->framing == E1U && nbit != 32)
return (EINVAL);
if (ts == 0)
return (EINVAL);
if (sc->framing == E1)
chan = ffs(ts) - 1;
else
chan = 1;
if (!sc->ch[chan])
mn_create_channel(sc, chan);
else if (sc->ch[chan]->state == UP)
return (EBUSY);
sc->ch[chan]->ts = ts;
sc->ch[chan]->hook = hook;
sc->ch[chan]->tx_limit = nbit * 8;
NG_HOOK_SET_PRIVATE(hook, sc->ch[chan]);
sc->nhooks++;
return(0);
}
static struct trxd *mn_desc_free;
static struct trxd *
mn_alloc_desc(void)
{
struct trxd *dp;
dp = mn_desc_free;
if (dp)
mn_desc_free = dp->vnext;
else
dp = (struct trxd *)malloc(sizeof *dp, M_MN, M_NOWAIT);
return (dp);
}
static void
mn_free_desc(struct trxd *dp)
{
dp->vnext = mn_desc_free;
mn_desc_free = dp;
}
static u_int32_t
mn_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);
}
#ifdef notyet
static void
mn_fmt_ts(char *p, u_int32_t ts)
{
char *s;
int j;
s = "";
ts &= 0xffffffff;
for (j = 0; j < 32; j++) {
if (!(ts & (1 << j)))
continue;
sprintf(p, "%s%d", s, j);
p += strlen(p);
s = ",";
if (!(ts & (1 << (j+1))))
continue;
for (; j < 32; j++)
if (!(ts & (1 << (j+1))))
break;
sprintf(p, "-%d", j);
p += strlen(p);
s = ",";
}
}
#endif /* notyet */
/*
* OUTPUT
*/
static int
ngmn_rcvdata(hook_p hook, item_p item)
{
struct mbuf *m2;
struct trxd *dp, *dp2;
struct schan *sch;
struct mn_softc *sc;
int chan, pitch, len;
struct mbuf *m;
sch = NG_HOOK_PRIVATE(hook);
sc = sch->sc;
chan = sch->chan;
if (sch->state != UP) {
NG_FREE_ITEM(item);
return (0);
}
NGI_GET_M(item, m);
if (sch->tx_pending + m->m_pkthdr.len > sch->tx_limit * mn_maxlatency) {
NG_FREE_M(m);
NG_FREE_ITEM(item);
return (0);
}
NG_FREE_ITEM(item);
pitch = 0;
m2 = m;
dp2 = sc->ch[chan]->xl;
len = m->m_pkthdr.len;
while (len) {
dp = mn_alloc_desc();
if (!dp) {
pitch++;
m_freem(m);
sc->ch[chan]->xl = dp2;
dp = dp2->vnext;
while (dp) {
dp2 = dp->vnext;
mn_free_desc(dp);
dp = dp2;
}
sc->ch[chan]->xl->vnext = 0;
break;
}
dp->data = vtophys(m2->m_data);
dp->flags = m2->m_len << 16;
dp->flags += 1;
len -= m2->m_len;
dp->next = vtophys(dp);
dp->vnext = 0;
sc->ch[chan]->xl->next = vtophys(dp);
sc->ch[chan]->xl->vnext = dp;
sc->ch[chan]->xl = dp;
if (!len) {
dp->m = m;
dp->flags |= 0xc0000000;
dp2->flags &= ~0x40000000;
} else {
dp->m = 0;
m2 = m2->m_next;
}
}
if (pitch)
printf("%s%d: Short on mem, pitched %d packets\n",
sc->name, chan, pitch);
else {
#if 0
printf("%d = %d + %d (%p)\n",
sch->tx_pending + m->m_pkthdr.len,
sch->tx_pending , m->m_pkthdr.len, m);
#endif
sch->tx_pending += m->m_pkthdr.len;
sc->m32x->txpoll &= ~(1 << chan);
}
return (0);
}
/*
* OPEN
*/
static int
ngmn_connect(hook_p hook)
{
int i, nts, chan;
struct trxd *dp, *dp2;
struct mbuf *m;
struct mn_softc *sc;
struct schan *sch;
u_int32_t u;
sch = NG_HOOK_PRIVATE(hook);
chan = sch->chan;
sc = sch->sc;
if (sch->state == UP)
return (0);
sch->state = UP;
/* Count and configure the timeslots for this channel */
for (nts = i = 0; i < 32; i++)
if (sch->ts & (1 << i)) {
sc->m32_mem.ts[i] = 0x00ff00ff |
(chan << 24) | (chan << 8);
nts++;
}
/* Init the receiver & xmitter to HDLC */
sc->m32_mem.cs[chan].flags = 0x80e90006;
/* Allocate two buffers per timeslot */
if (nts == 32)
sc->m32_mem.cs[chan].itbs = 63;
else
sc->m32_mem.cs[chan].itbs = nts * 2;
/* Setup a transmit chain with one descriptor */
/* XXX: we actually send a 1 byte packet */
dp = mn_alloc_desc();
MGETHDR(m, M_WAITOK, MT_DATA);
m->m_pkthdr.len = 0;
dp->m = m;
dp->flags = 0xc0000000 + (1 << 16);
dp->next = vtophys(dp);
dp->vnext = 0;
dp->data = vtophys(sc->name);
sc->m32_mem.cs[chan].tdesc = vtophys(dp);
sc->ch[chan]->x1 = dp;
sc->ch[chan]->xl = dp;
/* Setup a receive chain with 5 + NTS descriptors */
dp = mn_alloc_desc();
m = NULL;
MGETHDR(m, M_WAITOK, MT_DATA);
MCLGET(m, M_WAITOK);
dp->m = m;
dp->data = vtophys(m->m_data);
dp->flags = 0x40000000;
dp->flags += 1600 << 16;
dp->next = vtophys(dp);
dp->vnext = 0;
sc->ch[chan]->rl = dp;
for (i = 0; i < (nts + 10); i++) {
dp2 = dp;
dp = mn_alloc_desc();
m = NULL;
MGETHDR(m, M_WAITOK, MT_DATA);
MCLGET(m, M_WAITOK);
dp->m = m;
dp->data = vtophys(m->m_data);
dp->flags = 0x00000000;
dp->flags += 1600 << 16;
dp->next = vtophys(dp2);
dp->vnext = dp2;
}
sc->m32_mem.cs[chan].rdesc = vtophys(dp);
sc->ch[chan]->r1 = dp;
/* Initialize this channel */
sc->m32_mem.ccb = 0x00008000 + (chan << 8);
sc->m32x->cmd = 0x1;
DELAY(1000);
u = sc->m32x->stat;
if (!(u & 1))
printf("%s: init chan %d stat %08x\n", sc->name, chan, u);
sc->m32x->stat = 1;
/* probably not at splnet, force outward queueing */
NG_HOOK_FORCE_QUEUE(NG_HOOK_PEER(hook));
return (0);
}
/*
* CLOSE
*/
static int
ngmn_disconnect(hook_p hook)
{
int chan, i;
struct mn_softc *sc;
struct schan *sch;
struct trxd *dp, *dp2;
u_int32_t u;
sch = NG_HOOK_PRIVATE(hook);
chan = sch->chan;
sc = sch->sc;
if (sch->state == DOWN)
return (0);
sch->state = DOWN;
/* Set receiver & transmitter off */
sc->m32_mem.cs[chan].flags = 0x80920006;
sc->m32_mem.cs[chan].itbs = 0;
/* free the timeslots */
for (i = 0; i < 32; i++)
if (sc->ch[chan]->ts & (1 << i))
sc->m32_mem.ts[i] = 0x20002000;
/* Initialize this channel */
sc->m32_mem.ccb = 0x00008000 + (chan << 8);
sc->m32x->cmd = 0x1;
DELAY(30);
u = sc->m32x->stat;
if (!(u & 1))
printf("%s: zap chan %d stat %08x\n", sc->name, chan, u);
sc->m32x->stat = 1;
/* Free all receive descriptors and mbufs */
for (dp = sc->ch[chan]->r1; dp ; dp = dp2) {
if (dp->m)
m_freem(dp->m);
sc->ch[chan]->r1 = dp2 = dp->vnext;
mn_free_desc(dp);
}
/* Free all transmit descriptors and mbufs */
for (dp = sc->ch[chan]->x1; dp ; dp = dp2) {
if (dp->m) {
sc->ch[chan]->tx_pending -= dp->m->m_pkthdr.len;
m_freem(dp->m);
}
sc->ch[chan]->x1 = dp2 = dp->vnext;
mn_free_desc(dp);
}
sc->nhooks--;
return(0);
}
/*
* Create a new channel.
*/
static void
mn_create_channel(struct mn_softc *sc, int chan)
{
struct schan *sch;
sch = sc->ch[chan] = (struct schan *)malloc(sizeof *sc->ch[chan],
M_MN, M_WAITOK | M_ZERO);
sch->sc = sc;
sch->state = DOWN;
sch->chan = chan;
sprintf(sch->name, "%s%d", sc->name, chan);
return;
}
#ifdef notyet
/*
* Dump Munich32x state
*/
static void
m32_dump(struct mn_softc *sc)
{
u_int32_t *tp4;
int i, j;
printf("mn%d: MUNICH32X dump\n", sc->unit);
tp4 = (u_int32_t *)sc->m0v;
for(j = 0; j < 64; j += 8) {
printf("%02x", j * sizeof *tp4);
for(i = 0; i < 8; i++)
printf(" %08x", tp4[i+j]);
printf("\n");
}
for(j = 0; j < M32_CHAN; j++) {
if (!sc->ch[j])
continue;
printf("CH%d: state %d ts %08x",
j, sc->ch[j]->state, sc->ch[j]->ts);
printf(" %08x %08x %08x %08x %08x %08x\n",
sc->m32_mem.cs[j].flags,
sc->m32_mem.cs[j].rdesc,
sc->m32_mem.cs[j].tdesc,
sc->m32_mem.cs[j].itbs,
sc->m32_mem.crxd[j],
sc->m32_mem.ctxd[j] );
}
}
/*
* Dump Falch54 state
*/
static void
f54_dump(struct mn_softc *sc)
{
u_int8_t *tp1;
int i, j;
printf("%s: FALC54 dump\n", sc->name);
tp1 = (u_int8_t *)sc->m1v;
for(j = 0; j < 128; j += 16) {
printf("%s: %02x |", sc->name, j * sizeof *tp1);
for(i = 0; i < 16; i++)
printf(" %02x", tp1[i+j]);
printf("\n");
}
}
#endif /* notyet */
/*
* Init Munich32x
*/
static void
m32_init(struct mn_softc *sc)
{
sc->m32x->conf = 0x00000000;
sc->m32x->mode1 = 0x81048000 + 1600; /* XXX: temp */
#if 1
sc->m32x->mode2 = 0x00000081;
sc->m32x->txpoll = 0xffffffff;
#elif 1
sc->m32x->mode2 = 0x00000081;
sc->m32x->txpoll = 0xffffffff;
#else
sc->m32x->mode2 = 0x00000101;
#endif
sc->m32x->lconf = 0x6060009B;
sc->m32x->imask = 0x00000000;
}
/*
* Init the Falc54
*/
static void
f54_init(struct mn_softc *sc)
{
sc->f54w->ipc = 0x07;
sc->f54w->xpm0 = 0xbd;
sc->f54w->xpm1 = 0x03;
sc->f54w->xpm2 = 0x00;
sc->f54w->imr0 = 0x18; /* RMB, CASC */
sc->f54w->imr1 = 0x08; /* XMB */
sc->f54w->imr2 = 0x00;
sc->f54w->imr3 = 0x38; /* LMFA16, AIS16, RA16 */
sc->f54w->imr4 = 0x00;
sc->f54w->fmr0 = 0xf0; /* X: HDB3, R: HDB3 */
sc->f54w->fmr1 = 0x0e; /* Send CRC4, 2Mbit, ECM */
if (sc->framing == E1)
sc->f54w->fmr2 = 0x03; /* Auto Rem-Alarm, Auto resync */
else if (sc->framing == E1U)
sc->f54w->fmr2 = 0x33; /* dais, rtm, Auto Rem-Alarm, Auto resync */
sc->f54w->lim1 = 0xb0; /* XCLK=8kHz, .62V threshold */
sc->f54w->pcd = 0x0a;
sc->f54w->pcr = 0x15;
sc->f54w->xsw = 0x9f; /* fmr4 */
if (sc->framing == E1)
sc->f54w->xsp = 0x1c; /* fmr5 */
else if (sc->framing == E1U)
sc->f54w->xsp = 0x3c; /* tt0, fmr5 */
sc->f54w->xc0 = 0x07;
sc->f54w->xc1 = 0x3d;
sc->f54w->rc0 = 0x05;
sc->f54w->rc1 = 0x00;
sc->f54w->cmdr = 0x51;
}
static int
mn_reset(struct mn_softc *sc)
{
u_int32_t u;
int i;
sc->m32x->ccba = vtophys(&sc->m32_mem.csa);
sc->m32_mem.csa = vtophys(&sc->m32_mem.ccb);
bzero(sc->tiqb, sizeof sc->tiqb);
sc->m32x->tiqba = vtophys(&sc->tiqb);
sc->m32x->tiql = NIQB / 16 - 1;
bzero(sc->riqb, sizeof sc->riqb);
sc->m32x->riqba = vtophys(&sc->riqb);
sc->m32x->riql = NIQB / 16 - 1;
bzero(sc->ltiqb, sizeof sc->ltiqb);
sc->m32x->ltiqba = vtophys(&sc->ltiqb);
sc->m32x->ltiql = NIQB / 16 - 1;
bzero(sc->lriqb, sizeof sc->lriqb);
sc->m32x->lriqba = vtophys(&sc->lriqb);
sc->m32x->lriql = NIQB / 16 - 1;
bzero(sc->piqb, sizeof sc->piqb);
sc->m32x->piqba = vtophys(&sc->piqb);
sc->m32x->piql = NIQB / 16 - 1;
m32_init(sc);
f54_init(sc);
u = sc->m32x->stat;
sc->m32x->stat = u;
sc->m32_mem.ccb = 0x4;
sc->m32x->cmd = 0x1;
DELAY(1000);
u = sc->m32x->stat;
sc->m32x->stat = u;
/* set all timeslots to known state */
for (i = 0; i < 32; i++)
sc->m32_mem.ts[i] = 0x20002000;
if (!(u & 1)) {
printf(
"mn%d: WARNING: Controller failed the PCI bus-master test.\n"
"mn%d: WARNING: Use a PCI slot which can support bus-master cards.\n",
sc->unit, sc->unit);
return (0);
}
return (1);
}
/*
* FALC54 interrupt handling
*/
static void
f54_intr(struct mn_softc *sc)
{
unsigned g, u, s;
g = sc->f54r->gis;
u = sc->f54r->isr0 << 24;
u |= sc->f54r->isr1 << 16;
u |= sc->f54r->isr2 << 8;
u |= sc->f54r->isr3;
sc->falc_irq = u;
/* don't chat about the 1 sec heart beat */
if (u & ~0x40) {
#if 0
printf("%s*: FALC54 IRQ GIS:%02x %b\n", sc->name, g, u, "\20"
"\40RME\37RFS\36T8MS\35RMB\34CASC\33CRC4\32SA6SC\31RPF"
"\30b27\27RDO\26ALLS\25XDU\24XMB\23b22\22XLSC\21XPR"
"\20FAR\17LFA\16MFAR\15T400MS\14AIS\13LOS\12RAR\11RA"
"\10ES\7SEC\6LMFA16\5AIS16\4RA16\3API\2SLN\1SLP");
#endif
s = sc->f54r->frs0 << 24;
s |= sc->f54r->frs1 << 16;
s |= sc->f54r->rsw << 8;
s |= sc->f54r->rsp;
sc->falc_state = s;
s &= ~0x01844038; /* undefined or static bits */
s &= ~0x00009fc7; /* bits we don't care about */
s &= ~0x00780000; /* XXX: TS16 related */
s &= ~0x06000000; /* XXX: Multiframe related */
#if 0
printf("%s*: FALC54 Status %b\n", sc->name, s, "\20"
"\40LOS\37AIS\36LFA\35RRA\34AUXP\33NMF\32LMFA\31frs0.0"
"\30frs1.7\27TS16RA\26TS16LOS\25TS16AIS\24TS16LFA\23frs1.2\22XLS\21XLO"
"\20RS1\17rsw.6\16RRA\15RY0\14RY1\13RY2\12RY3\11RY4"
"\10SI1\7SI2\6rsp.5\5rsp.4\4rsp.3\3RSIF\2RS13\1RS15");
#endif
if (s != sc->framer_state) {
#if 0
for (i = 0; i < M32_CHAN; i++) {
if (!sc->ch[i])
continue;
sp = &sc->ch[i]->ifsppp;
if (!(SP2IFP(sp)->if_flags & IFF_UP))
continue;
if (s)
timeout((timeout_t *)sp->pp_down, sp, 1 * hz);
else
timeout((timeout_t *)sp->pp_up, sp, 1 * hz);
}
#endif
sc->framer_state = s;
}
}
/* Once per second check error counters */
/* XXX: not clear if this is actually ok */
if (!(u & 0x40))
return;
sc->cnt_fec += sc->f54r->fec;
sc->cnt_cvc += sc->f54r->cvc;
sc->cnt_cec1 += sc->f54r->cec1;
sc->cnt_ebc += sc->f54r->ebc;
sc->cnt_cec2 += sc->f54r->cec2;
sc->cnt_cec3 += sc->f54r->cec3;
sc->cnt_rbc += sc->f54r->rbc;
}
/*
* Transmit interrupt for one channel
*/
static void
mn_tx_intr(struct mn_softc *sc, u_int32_t vector)
{
u_int32_t chan;
struct trxd *dp;
struct mbuf *m;
chan = vector & 0x1f;
if (!sc->ch[chan])
return;
if (sc->ch[chan]->state != UP) {
printf("%s: tx_intr when not UP\n", sc->name);
return;
}
for (;;) {
dp = sc->ch[chan]->x1;
if (vtophys(dp) == sc->m32_mem.ctxd[chan])
return;
m = dp->m;
if (m) {
#if 0
printf("%d = %d - %d (%p)\n",
sc->ch[chan]->tx_pending - m->m_pkthdr.len,
sc->ch[chan]->tx_pending , m->m_pkthdr.len, m);
#endif
sc->ch[chan]->tx_pending -= m->m_pkthdr.len;
m_freem(m);
}
sc->ch[chan]->last_xmit = time_second;
sc->ch[chan]->x1 = dp->vnext;
mn_free_desc(dp);
}
}
/*
* Receive interrupt for one channel
*/
static void
mn_rx_intr(struct mn_softc *sc, u_int32_t vector)
{
u_int32_t chan, err;
struct trxd *dp;
struct mbuf *m;
struct schan *sch;
chan = vector & 0x1f;
if (!sc->ch[chan])
return;
sch = sc->ch[chan];
if (sch->state != UP) {
printf("%s: rx_intr when not UP\n", sc->name);
return;
}
vector &= ~0x1f;
if (vector == 0x30000b00)
sch->rx_error++;
for (;;) {
dp = sch->r1;
if (vtophys(dp) == sc->m32_mem.crxd[chan])
return;
m = dp->m;
dp->m = 0;
m->m_pkthdr.len = m->m_len = (dp->status >> 16) & 0x1fff;
err = (dp->status >> 8) & 0xff;
if (!err) {
int error;
NG_SEND_DATA_ONLY(error, sch->hook, m);
sch->last_recv = time_second;
/* we could be down by now... */
if (sch->state != UP)
return;
} else if (err & 0x40) {
sch->short_error++;
} else if (err & 0x10) {
sch->crc_error++;
} else if (err & 0x08) {
sch->dribble_error++;
} else if (err & 0x04) {
sch->long_error++;
} else if (err & 0x02) {
sch->abort_error++;
} else if (err & 0x01) {
sch->overflow_error++;
}
if (err) {
sch->last_rxerr = time_second;
sch->prev_error = sch->last_error;
sch->last_error = err;
}
sc->ch[chan]->r1 = dp->vnext;
/* Replenish desc + mbuf supplies */
if (!m) {
MGETHDR(m, M_NOWAIT, MT_DATA);
if (m == NULL) {
mn_free_desc(dp);
return; /* ENOBUFS */
}
MCLGET(m, M_NOWAIT);
if((m->m_flags & M_EXT) == 0) {
mn_free_desc(dp);
m_freem(m);
return; /* ENOBUFS */
}
}
dp->m = m;
dp->data = vtophys(m->m_data);
dp->flags = 0x40000000;
dp->flags += 1600 << 16;
dp->next = vtophys(dp);
dp->vnext = 0;
sc->ch[chan]->rl->next = vtophys(dp);
sc->ch[chan]->rl->vnext = dp;
sc->ch[chan]->rl->flags &= ~0x40000000;
sc->ch[chan]->rl = dp;
}
}
/*
* Interupt handler
*/
static void
mn_intr(void *xsc)
{
struct mn_softc *sc;
u_int32_t stat, lstat, u;
int i, j;
sc = xsc;
stat = sc->m32x->stat;
lstat = sc->m32x->lstat;
#if 0
if (!stat && !(lstat & 2))
return;
#endif
if (stat & ~0xc200) {
printf("%s: I stat=%08x lstat=%08x\n", sc->name, stat, lstat);
}
if ((stat & 0x200) || (lstat & 2))
f54_intr(sc);
for (j = i = 0; i < 64; i ++) {
u = sc->riqb[i];
if (u) {
sc->riqb[i] = 0;
mn_rx_intr(sc, u);
if ((u & ~0x1f) == 0x30000800 || (u & ~0x1f) == 0x30000b00)
continue;
u &= ~0x30000400; /* bits we don't care about */
if ((u & ~0x1f) == 0x00000900)
continue;
if (!(u & ~0x1f))
continue;
if (!j)
printf("%s*: RIQB:", sc->name);
printf(" [%d]=%08x", i, u);
j++;
}
}
if (j)
printf("\n");
for (j = i = 0; i < 64; i ++) {
u = sc->tiqb[i];
if (u) {
sc->tiqb[i] = 0;
mn_tx_intr(sc, u);
if ((u & ~0x1f) == 0x20000800)
continue;
u &= ~0x20000000; /* bits we don't care about */
if (!u)
continue;
if (!j)
printf("%s*: TIQB:", sc->name);
printf(" [%d]=%08x", i, u);
j++;
}
}
if (j)
printf("\n");
sc->m32x->stat = stat;
}
/*
* PCI initialization stuff
*/
static int
mn_probe (device_t self)
{
u_int id = pci_get_devid(self);
if (sizeof (struct m32xreg) != 256) {
printf("MN: sizeof(struct m32xreg) = %zd, should have been 256\n", sizeof (struct m32xreg));
return (ENXIO);
}
if (sizeof (struct f54rreg) != 128) {
printf("MN: sizeof(struct f54rreg) = %zd, should have been 128\n", sizeof (struct f54rreg));
return (ENXIO);
}
if (sizeof (struct f54wreg) != 128) {
printf("MN: sizeof(struct f54wreg) = %zd, should have been 128\n", sizeof (struct f54wreg));
return (ENXIO);
}
if (id != 0x2101110a)
return (ENXIO);
device_set_desc_copy(self, "Munich32X E1/T1 HDLC Controller");
return (BUS_PROBE_DEFAULT);
}
static int
mn_attach (device_t self)
{
struct mn_softc *sc;
u_int32_t u;
u_int32_t ver;
static int once;
int rid, error;
struct resource *res;
if (!once) {
if (ng_newtype(&mntypestruct))
printf("ng_newtype failed\n");
once++;
}
sc = (struct mn_softc *)malloc(sizeof *sc, M_MN, M_WAITOK | M_ZERO);
device_set_softc(self, sc);
sc->dev = self;
sc->unit = device_get_unit(self);
sc->framing = E1;
sprintf(sc->name, "mn%d", sc->unit);
rid = PCIR_BAR(0);
res = bus_alloc_resource_any(self, SYS_RES_MEMORY, &rid, RF_ACTIVE);
if (res == NULL) {
device_printf(self, "Could not map memory\n");
free(sc, M_MN);
return ENXIO;
}
sc->m0v = rman_get_virtual(res);
sc->m0p = rman_get_start(res);
rid = PCIR_BAR(1);
res = bus_alloc_resource_any(self, SYS_RES_MEMORY, &rid, RF_ACTIVE);
if (res == NULL) {
device_printf(self, "Could not map memory\n");
free(sc, M_MN);
return ENXIO;
}
sc->m1v = rman_get_virtual(res);
sc->m1p = rman_get_start(res);
/* Allocate interrupt */
rid = 0;
sc->irq = bus_alloc_resource_any(self, SYS_RES_IRQ, &rid,
RF_SHAREABLE | RF_ACTIVE);
if (sc->irq == NULL) {
printf("couldn't map interrupt\n");
free(sc, M_MN);
return(ENXIO);
}
error = bus_setup_intr(self, sc->irq, INTR_TYPE_NET, NULL, mn_intr, sc, &sc->intrhand);
if (error) {
printf("couldn't set up irq\n");
free(sc, M_MN);
return(ENXIO);
}
u = pci_read_config(self, PCIR_COMMAND, 2);
printf("%x\n", u);
pci_write_config(self, PCIR_COMMAND, u | PCIM_CMD_PERRESPEN | PCIM_CMD_BUSMASTEREN, 2);
#if 0
pci_write_config(self, PCIR_COMMAND, 0x02800046, 4);
#endif
u = pci_read_config(self, PCIR_COMMAND, 1);
printf("%x\n", u);
ver = pci_get_revid(self);
sc->m32x = (struct m32xreg *) sc->m0v;
sc->f54w = (struct f54wreg *) sc->m1v;
sc->f54r = (struct f54rreg *) sc->m1v;
/* We must reset before poking at FALC54 registers */
u = mn_reset(sc);
if (!u)
return (0);
printf("mn%d: Munich32X", sc->unit);
switch (ver) {
case 0x13:
printf(" Rev 2.2");
break;
default:
printf(" Rev 0x%x\n", ver);
}
printf(", Falc54");
switch (sc->f54r->vstr) {
case 0:
printf(" Rev < 1.3\n");
break;
case 1:
printf(" Rev 1.3\n");
break;
case 2:
printf(" Rev 1.4\n");
break;
case 0x10:
printf("-LH Rev 1.1\n");
break;
case 0x13:
printf("-LH Rev 1.3\n");
break;
default:
printf(" Rev 0x%x\n", sc->f54r->vstr);
}
if (ng_make_node_common(&mntypestruct, &sc->node) != 0) {
printf("ng_make_node_common failed\n");
return (0);
}
NG_NODE_SET_PRIVATE(sc->node, sc);
sprintf(sc->nodename, "%s%d", NG_MN_NODE_TYPE, sc->unit);
if (ng_name_node(sc->node, sc->nodename)) {
NG_NODE_UNREF(sc->node);
return (0);
}
return (0);
}
static device_method_t mn_methods[] = {
/* Device interface */
DEVMETHOD(device_probe, mn_probe),
DEVMETHOD(device_attach, mn_attach),
DEVMETHOD(device_suspend, bus_generic_suspend),
DEVMETHOD(device_resume, bus_generic_resume),
DEVMETHOD(device_shutdown, bus_generic_shutdown),
DEVMETHOD_END
};
static driver_t mn_driver = {
"mn",
mn_methods,
0
};
static devclass_t mn_devclass;
DRIVER_MODULE(mn, pci, mn_driver, mn_devclass, 0, 0);
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