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dahdi: Fixed loopup/loopdown signals

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The loopup/loopdown T1 maintenance feature in the single through quad-span
drivers now function properly, according to AT&T TR54016, by sending a
full rate pattern down the line. T1.403 ESF/Data Link patterns are not
supported currently.

Also grouped all the maint reset register clears under a single irq lock
to crank the performance up past 11.

Signed-off-by: Russ Meyerriecks <rmeyerriecks@digium.com>
Acked-by: Shaun Ruffell <sruffell@digium.com>
Acked-by: Kinsey Moore <kmoore@digium.com>

git-svn-id: http://svn.asterisk.org/svn/dahdi/linux/trunk@9516 a0bf4364-ded3-4de4-8d8a-66a801d63aff
This commit is contained in:
Russ Meyerriecks 2010-12-08 22:11:58 +00:00
parent bbdcb0c7ba
commit 6e25ac61db
3 changed files with 51 additions and 22 deletions
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63
drivers/dahdi/wct4xxp/base.c
View File

@ -472,6 +472,10 @@ static void t4_check_sigbits(struct t4 *wc, int span);
#define FMR0_SIM (1 << 0) /* Alarm Simulation */
#define FMR1_T 0x1D /* Framer Mode Register 1 */
#define FMR1_ECM (1 << 2) /* Error Counter 1sec Interrupt Enable */
#define FMR5 0x21 /* Framer Mode Register 5 */
#define FMR5_XLU (1 << 4) /* Transmit loopup code */
#define FMR5_XLD (1 << 5) /* Transmit loopdown code */
#define FMR5_EIBR (1 << 6) /* Internal Bit Robbing Access */
#define DEC_T 0x60 /* Diable Error Counter */
#define IERR_T 0x1B /* Single Bit Defect Insertion Register */
#define IBV 0 /* Bipolar violation */
@ -1602,12 +1606,20 @@ static int t4_maint(struct dahdi_span *span, int cmd)
case DAHDI_MAINT_LOOPUP:
dev_info(&wc->dev->dev, "Transmitting loopup code\n");
t4_clear_maint(span);
t4_framer_out(wc, span->offset, 0x21, 0x50);
spin_lock_irqsave(&wc->reglock, flags);
reg = __t4_framer_in(wc, span->offset, FMR5);
__t4_framer_out(wc, span->offset, FMR5, (reg|FMR5_XLU));
spin_unlock_irqrestore(&wc->reglock, flags);
ts->span.maintstat = DAHDI_MAINT_REMOTELOOP;
break;
case DAHDI_MAINT_LOOPDOWN:
dev_info(&wc->dev->dev, "Transmitting loopdown code\n");
t4_clear_maint(span);
t4_framer_out(wc, span->offset, 0x21, 0x60);
spin_lock_irqsave(&wc->reglock, flags);
reg = __t4_framer_in(wc, span->offset, FMR5);
__t4_framer_out(wc, span->offset, FMR5, (reg|FMR5_XLD));
spin_unlock_irqrestore(&wc->reglock, flags);
ts->span.maintstat = DAHDI_MAINT_NONE;
break;
case DAHDI_MAINT_FAS_DEFECT:
t4_framer_out(wc, span->offset, IERR_T, IFASE);
@ -1686,23 +1698,32 @@ static int t4_clear_maint(struct dahdi_span *span)
struct t4_span *ts = container_of(span, struct t4_span, span);
struct t4 *wc = ts->owner;
unsigned int reg;
unsigned long flags;
spin_lock_irqsave(&wc->reglock, flags);
/* Clear local loop */
reg = t4_framer_in(wc, span->offset, LIM0_T);
t4_framer_out(wc, span->offset, LIM0_T, (reg & ~LIM0_LL));
reg = __t4_framer_in(wc, span->offset, LIM0_T);
__t4_framer_out(wc, span->offset, LIM0_T, (reg & ~LIM0_LL));
/* Clear Remote Loop */
reg = t4_framer_in(wc, span->offset, LIM1_T);
t4_framer_out(wc, span->offset, LIM1_T, (reg & ~LIM1_RL));
reg = __t4_framer_in(wc, span->offset, LIM1_T);
__t4_framer_out(wc, span->offset, LIM1_T, (reg & ~LIM1_RL));
/* Clear Remote Payload Loop */
reg = t4_framer_in(wc, span->offset, FMR2_T);
t4_framer_out(wc, span->offset, FMR2_T, (reg & ~FMR2_PLB));
reg = __t4_framer_in(wc, span->offset, FMR2_T);
__t4_framer_out(wc, span->offset, FMR2_T, (reg & ~FMR2_PLB));
/* Clear PRBS */
reg = t4_framer_in(wc, span->offset, LCR1_T);
t4_framer_out(wc, span->offset, LCR1_T, (reg & ~(XPRBS | EPRM)));
reg = __t4_framer_in(wc, span->offset, LCR1_T);
__t4_framer_out(wc, span->offset, LCR1_T, (reg & ~(XPRBS | EPRM)));
/* Clear loopup/loopdown signals on the line */
reg = __t4_framer_in(wc, span->offset, FMR5);
__t4_framer_out(wc, span->offset, FMR5, (reg & ~(FMR5_XLU | FMR5_XLD)));
span->maintstat = DAHDI_MAINT_NONE;
spin_unlock_irqrestore(&wc->reglock, flags);
span->mainttimer = 0;
return 0;
@ -2489,7 +2510,7 @@ static void __t4_configure_t1(struct t4 *wc, int unit, int lineconfig, int txlev
}
__t4_framer_out(wc, unit, 0x1c, fmr0);
__t4_framer_out(wc, unit, 0x20, fmr4);
__t4_framer_out(wc, unit, 0x21, 0x40); /* FMR5: Enable RBS mode */
__t4_framer_out(wc, unit, FMR5, FMR5_EIBR); /* FMR5: Enable RBS mode */
__t4_framer_out(wc, unit, 0x37, 0xf0 ); /* LIM1: Clear data in case of LOS, Set receiver threshold (0.5V), No remote loop, no DRS */
__t4_framer_out(wc, unit, 0x36, 0x08); /* LIM0: Enable auto long haul mode, no local loop (must be after LIM1) */
@ -3130,6 +3151,10 @@ static void t4_check_alarms(struct t4 *wc, int span)
if ((!ts->span.mainttimer) && (d & 0x08)) {
/* Loop-up code detected */
if ((ts->loopupcnt++ > 80) && (ts->span.maintstat != DAHDI_MAINT_REMOTELOOP)) {
dev_notice(&wc->dev->dev,
"span %d: Loopup detected,"\
" enabling remote loop\n",
span+1);
__t4_framer_out(wc, span, 0x36, 0x08); /* LIM0: Disable any local loop */
__t4_framer_out(wc, span, 0x37, 0xf6 ); /* LIM1: Enable remote loop */
ts->span.maintstat = DAHDI_MAINT_REMOTELOOP;
@ -3140,6 +3165,10 @@ static void t4_check_alarms(struct t4 *wc, int span)
if ((!ts->span.mainttimer) && (d & 0x10)) {
/* Loop-down code detected */
if ((ts->loopdowncnt++ > 80) && (ts->span.maintstat == DAHDI_MAINT_REMOTELOOP)) {
dev_notice(&wc->dev->dev,
"span %d: Loopdown detected,"\
" disabling remote loop\n",
span+1);
__t4_framer_out(wc, span, 0x36, 0x08); /* LIM0: Disable any local loop */
__t4_framer_out(wc, span, 0x37, 0xf0 ); /* LIM1: Disable remote loop */
ts->span.maintstat = DAHDI_MAINT_NONE;
@ -3389,7 +3418,7 @@ static inline void __handle_leds(struct t4 *wc)
static inline void t4_framer_interrupt(struct t4 *wc, int span)
{
/* Check interrupts for a given span */
unsigned char gis, isr0, isr1, isr2, isr3, isr4, reg;
unsigned char gis, isr0, isr1, isr2, isr3, isr4;
int readsize = -1;
struct t4_span *ts = wc->tspans[span];
struct dahdi_chan *sigchan;
@ -3425,16 +3454,6 @@ static inline void t4_framer_interrupt(struct t4 *wc, int span)
ts->span.count.errsec += 1;
}
if (isr3 & 0x08) {
reg = t4_framer_in(wc, span, FRS1_T);
dev_info(&wc->dev->dev, "FRS1: %d\n", reg);
if (reg & LLBDD) {
dev_info(&wc->dev->dev, "Line loop-back activation "\
"signal detected with status: %01d "\
"for span %d\n", reg & LLBAD, span+1);
}
}
if (isr0)
t4_check_sigbits(wc, span);

7
drivers/dahdi/wcte12xp/base.c
View File

@ -1281,6 +1281,9 @@ static int t1xxp_clear_maint(struct dahdi_span *span)
if (reg < 0)
return -EIO;
t1_setreg(wc, LIM1, reg & ~(LIM1_RL | LIM1_JATT));
/* Clear loopup/loopdown signals on the line */
t1_setreg(wc, 0x21, 0x40);
return 0;
}
@ -1699,6 +1702,8 @@ static inline void t1_check_alarms(struct t1 *wc)
if ((!wc->span.mainttimer) && (d & 0x08)) {
/* Loop-up code detected */
if ((wc->loopupcnt++ > 80) && (wc->span.maintstat != DAHDI_MAINT_REMOTELOOP)) {
t1_notice(wc, "Loopup detected,"\
" enabling remote loop\n");
t1_setreg(wc, 0x36, 0x08); /* LIM0: Disable any local loop */
t1_setreg(wc, 0x37, 0xf6); /* LIM1: Enable remote loop */
wc->span.maintstat = DAHDI_MAINT_REMOTELOOP;
@ -1709,6 +1714,8 @@ static inline void t1_check_alarms(struct t1 *wc)
if ((!wc->span.mainttimer) && (d & 0x10)) {
/* Loop-down code detected */
if ((wc->loopdowncnt++ > 80) && (wc->span.maintstat == DAHDI_MAINT_REMOTELOOP)) {
t1_notice(wc, "Loopdown detected,"\
" disabling remote loop\n");
t1_setreg(wc, 0x36, 0x08); /* LIM0: Disable any local loop */
t1_setreg(wc, 0x37, 0xf0); /* LIM1: Disable remote loop */
wc->span.maintstat = DAHDI_MAINT_NONE;

3
drivers/dahdi/wcte12xp/wcte12xp.h
View File

@ -142,6 +142,9 @@ struct t1 {
#define t1_info(t1, format, arg...) \
dev_info(&t1->vb.pdev->dev , format , ## arg)
#define t1_notice(t1, format, arg...) \
dev_notice(&t1->vb.pdev->dev , format , ## arg)
/* Maintenance Mode Registers */
#define LIM0 0x36
#define LIM0_LL (1<<1)