/***************************************************************************
Function: sReadAiopNumChan
Purpose: Read the number of channels available in an AIOP directly from
an AIOP.
Call: sReadAiopNumChan(CtlP, aiop)
CONTROLLER_T *CtlP; Ptr to controller structure
int aiop: AIOP index
Return: int: The number of channels available
Comments: The number of channels is determined by write/reads from identical
offsets within the SRAM address spaces for channels 0 and 4.
If the channel 4 space is mirrored to channel 0 it is a 4 channel
AIOP, otherwise it is an 8 channel.
Warnings: No context switches are allowed while executing this function.
*/
int sReadAiopNumChan(CONTROLLER_T *CtlP, int aiop)
{
Word_t x, y;
rp_writeaiop4(CtlP, aiop, _INDX_ADDR,0x12340000L); /* write to chan 0 SRAM */
rp_writeaiop2(CtlP, aiop, _INDX_ADDR,0); /* read from SRAM, chan 0 */
x = rp_readaiop2(CtlP, aiop, _INDX_DATA);
rp_writeaiop2(CtlP, aiop, _INDX_ADDR,0x4000); /* read from SRAM, chan 4 */
y = rp_readaiop2(CtlP, aiop, _INDX_DATA);
if(x != y) /* if different must be 8 chan */
return(8);
else
return(4);
}
static int
sPCIInitController( CONTROLLER_t *CtlP,
int AiopNum,
int IRQNum,
Byte_t Frequency,
int PeriodicOnly,
int VendorDevice)
{
int i;
CtlP->CtlID = CTLID_0001; /* controller release 1 */
sPCIControllerEOI(CtlP);
/* Init AIOPs */
CtlP->NumAiop = 0;
for(i=0; i < AiopNum; i++)
{
/*device_printf(CtlP->dev, "aiop %d.\n", i);*/
CtlP->AiopID[i] = sReadAiopID(CtlP, i); /* read AIOP ID */
/*device_printf(CtlP->dev, "ID = %d.\n", CtlP->AiopID[i]);*/
if(CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
{
break; /* done looking for AIOPs */
}
switch( VendorDevice ) {
case PCI_PRODUCT_COMTROL_ROCKETPORT4QUAD:
case PCI_PRODUCT_COMTROL_ROCKETPORT4RJ:
case PCI_PRODUCT_COMTROL_ROCKETMODEM4:
CtlP->AiopNumChan[i] = 4;
break;
case PCI_PRODUCT_COMTROL_ROCKETMODEM6:
CtlP->AiopNumChan[i] = 6;
break;
case PCI_PRODUCT_COMTROL_ROCKETPORT8OCTA:
case PCI_PRODUCT_COMTROL_ROCKETPORT8RJ:
case PCI_PRODUCT_COMTROL_ROCKETPORT8EXT:
case PCI_PRODUCT_COMTROL_ROCKETPORT16EXT:
case PCI_PRODUCT_COMTROL_ROCKETPORT32EXT:
CtlP->AiopNumChan[i] = 8;
break;
default:
CtlP->AiopNumChan[i] = sReadAiopNumChan(CtlP, i);
break;
}
/*device_printf(CtlP->dev, "%d channels.\n", CtlP->AiopNumChan[i]);*/
rp_writeaiop2(CtlP, i, _INDX_ADDR,_CLK_PRE); /* clock prescaler */
/*device_printf(CtlP->dev, "configuring clock prescaler.\n");*/
rp_writeaiop1(CtlP, i, _INDX_DATA,CLOCK_PRESC);
/*device_printf(CtlP->dev, "configured clock prescaler.\n");*/
CtlP->NumAiop++; /* bump count of AIOPs */
}
if(CtlP->NumAiop == 0)
return(-1);
else
return(CtlP->NumAiop);
}
static int
sPCIInitController( CONTROLLER_t *CtlP,
int AiopNum,
int IRQNum,
Byte_t Frequency,
int PeriodicOnly,
int VendorDevice)
{
int i;
CtlP->CtlID = CTLID_0001; /* controller release 1 */
sPCIControllerEOI(CtlP);
/* Init AIOPs */
CtlP->NumAiop = 0;
for(i=0; i < AiopNum; i++)
{
/*device_printf(CtlP->dev, "aiop %d.\n", i);*/
CtlP->AiopID[i] = sReadAiopID(CtlP, i); /* read AIOP ID */
/*device_printf(CtlP->dev, "ID = %d.\n", CtlP->AiopID[i]);*/
if(CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
{
break; /* done looking for AIOPs */
}
switch( VendorDevice ) {
case RP_DEVICE_ID_4Q:
case RP_DEVICE_ID_4J:
case RP_DEVICE_ID_4M:
CtlP->AiopNumChan[i] = 4;
break;
case RP_DEVICE_ID_6M:
CtlP->AiopNumChan[i] = 6;
break;
case RP_DEVICE_ID_8O:
case RP_DEVICE_ID_8J:
case RP_DEVICE_ID_8I:
case RP_DEVICE_ID_16I:
case RP_DEVICE_ID_32I:
CtlP->AiopNumChan[i] = 8;
break;
default:
#ifdef notdef
CtlP->AiopNumChan[i] = 8;
#else
CtlP->AiopNumChan[i] = sReadAiopNumChan(CtlP, i);
#endif /* notdef */
break;
}
/*device_printf(CtlP->dev, "%d channels.\n", CtlP->AiopNumChan[i]);*/
rp_writeaiop2(CtlP, i, _INDX_ADDR,_CLK_PRE); /* clock prescaler */
/*device_printf(CtlP->dev, "configuring clock prescaler.\n");*/
rp_writeaiop1(CtlP, i, _INDX_DATA,CLOCK_PRESC);
/*device_printf(CtlP->dev, "configured clock prescaler.\n");*/
CtlP->NumAiop++; /* bump count of AIOPs */
}
if(CtlP->NumAiop == 0)
return(-1);
else
return(CtlP->NumAiop);
}
/***************************************************************************
Function: sInitController
Purpose: Initialization of controller global registers and controller
structure.
Call: sInitController(CtlP,MudbacCtlP,AiopNum,
IRQNum,Frequency,PeriodicOnly)
CONTROLLER_T *CtlP; Ptr to controller structure
CONTROLLER_T *MudbacCtlP; Ptr to Mudbac controller structure
int AiopNum; Number of Aiops
int IRQNum; Interrupt Request number. Can be any of the following:
0: Disable global interrupts
3: IRQ 3
4: IRQ 4
5: IRQ 5
9: IRQ 9
10: IRQ 10
11: IRQ 11
12: IRQ 12
15: IRQ 15
Byte_t Frequency: A flag identifying the frequency
of the periodic interrupt, can be any one of the following:
FREQ_DIS - periodic interrupt disabled
FREQ_137HZ - 137 Hertz
FREQ_69HZ - 69 Hertz
FREQ_34HZ - 34 Hertz
FREQ_17HZ - 17 Hertz
FREQ_9HZ - 9 Hertz
FREQ_4HZ - 4 Hertz
If IRQNum is set to 0 the Frequency parameter is
overidden, it is forced to a value of FREQ_DIS.
int PeriodicOnly: TRUE if all interrupts except the periodic
interrupt are to be blocked.
FALSE is both the periodic interrupt and
other channel interrupts are allowed.
If IRQNum is set to 0 the PeriodicOnly parameter is
overidden, it is forced to a value of FALSE.
Return: int: Number of AIOPs on the controller, or CTLID_NULL if controller
initialization failed.
Comments:
If periodic interrupts are to be disabled but AIOP interrupts
are allowed, set Frequency to FREQ_DIS and PeriodicOnly to FALSE.
If interrupts are to be completely disabled set IRQNum to 0.
Setting Frequency to FREQ_DIS and PeriodicOnly to TRUE is an
invalid combination.
This function performs initialization of global interrupt modes,
but it does not actually enable global interrupts. To enable
and disable global interrupts use functions sEnGlobalInt() and
sDisGlobalInt(). Enabling of global interrupts is normally not
done until all other initializations are complete.
Even if interrupts are globally enabled, they must also be
individually enabled for each channel that is to generate
interrupts.
Warnings: No range checking on any of the parameters is done.
No context switches are allowed while executing this function.
After this function all AIOPs on the controller are disabled,
they can be enabled with sEnAiop().
*/
static int
sInitController( CONTROLLER_T *CtlP,
CONTROLLER_T *MudbacCtlP,
int AiopNum,
int IRQNum,
Byte_t Frequency,
int PeriodicOnly)
{
int i;
int ctl_base, aiop_base, aiop_size;
CtlP->CtlID = CTLID_0001; /* controller release 1 */
ISACTL(CtlP)->MBaseIO = rp_nisadevs;
if (MudbacCtlP->io[ISACTL(CtlP)->MBaseIO] != NULL) {
ISACTL(CtlP)->MReg0IO = 0x40 + 0;
ISACTL(CtlP)->MReg1IO = 0x40 + 1;
ISACTL(CtlP)->MReg2IO = 0x40 + 2;
ISACTL(CtlP)->MReg3IO = 0x40 + 3;
} else {
MudbacCtlP->io_rid[ISACTL(CtlP)->MBaseIO] = ISACTL(CtlP)->MBaseIO;
ctl_base = rman_get_start(MudbacCtlP->io[0]) + 0x40 + 0x400 * rp_nisadevs;
MudbacCtlP->io[ISACTL(CtlP)->MBaseIO] = bus_alloc_resource(MudbacCtlP->dev, SYS_RES_IOPORT, &CtlP->io_rid[ISACTL(CtlP)->MBaseIO], ctl_base, ctl_base + 3, 4, RF_ACTIVE);
ISACTL(CtlP)->MReg0IO = 0;
ISACTL(CtlP)->MReg1IO = 1;
ISACTL(CtlP)->MReg2IO = 2;
ISACTL(CtlP)->MReg3IO = 3;
}
#if 1
ISACTL(CtlP)->MReg2 = 0; /* interrupt disable */
ISACTL(CtlP)->MReg3 = 0; /* no periodic interrupts */
#else
if(sIRQMap[IRQNum] == 0) /* interrupts globally disabled */
{
ISACTL(CtlP)->MReg2 = 0; /* interrupt disable */
ISACTL(CtlP)->MReg3 = 0; /* no periodic interrupts */
}
else
{
ISACTL(CtlP)->MReg2 = sIRQMap[IRQNum]; /* set IRQ number */
ISACTL(CtlP)->MReg3 = Frequency; /* set frequency */
if(PeriodicOnly) /* periodic interrupt only */
{
ISACTL(CtlP)->MReg3 |= PERIODIC_ONLY;
}
}
#endif
rp_writeio1(MudbacCtlP,ISACTL(CtlP)->MBaseIO,ISACTL(CtlP)->MReg2IO,ISACTL(CtlP)->MReg2);
rp_writeio1(MudbacCtlP,ISACTL(CtlP)->MBaseIO,ISACTL(CtlP)->MReg3IO,ISACTL(CtlP)->MReg3);
sControllerEOI(MudbacCtlP,CtlP); /* clear EOI if warm init */
/* Init AIOPs */
CtlP->NumAiop = 0;
for(i=0; i < AiopNum; i++)
{
if (CtlP->io[i] == NULL) {
CtlP->io_rid[i] = i;
aiop_base = rman_get_start(CtlP->io[0]) + 0x400 * i;
if (rp_nisadevs == 0)
aiop_size = 0x44;
else
aiop_size = 0x40;
CtlP->io[i] = bus_alloc_resource(CtlP->dev, SYS_RES_IOPORT, &CtlP->io_rid[i], aiop_base, aiop_base + aiop_size - 1, aiop_size, RF_ACTIVE);
} else
aiop_base = rman_get_start(CtlP->io[i]);
rp_writeio1(MudbacCtlP,ISACTL(CtlP)->MBaseIO,
ISACTL(CtlP)->MReg2IO,
ISACTL(CtlP)->MReg2 | (i & 0x03)); /* AIOP index */
rp_writeio1(MudbacCtlP,ISACTL(CtlP)->MBaseIO,
ISACTL(CtlP)->MReg0IO,
(Byte_t)(aiop_base >> 6)); /* set up AIOP I/O in MUDBAC */
sEnAiop(MudbacCtlP,CtlP,i); /* enable the AIOP */
CtlP->AiopID[i] = sReadAiopID(CtlP, i); /* read AIOP ID */
if(CtlP->AiopID[i] == AIOPID_NULL) /* if AIOP does not exist */
{
sDisAiop(MudbacCtlP,CtlP,i); /* disable AIOP */
bus_release_resource(CtlP->dev, SYS_RES_IOPORT, CtlP->io_rid[i], CtlP->io[i]);
CtlP->io[i] = NULL;
break; /* done looking for AIOPs */
}
CtlP->AiopNumChan[i] = sReadAiopNumChan(CtlP, i); /* num channels in AIOP */
rp_writeaiop2(CtlP,i,_INDX_ADDR,_CLK_PRE); /* clock prescaler */
rp_writeaiop1(CtlP,i,_INDX_DATA,CLOCK_PRESC);
CtlP->NumAiop++; /* bump count of AIOPs */
sDisAiop(MudbacCtlP,CtlP,i); /* disable AIOP */
}
if(CtlP->NumAiop == 0)
return(-1);
else
return(CtlP->NumAiop);
}