void __init via_init(void)
{
switch(macintosh_config->via_type) {
/* IIci, IIsi, IIvx, IIvi (P6xx), LC series */
case MAC_VIA_IICI:
via1 = (void *) VIA1_BASE;
if (macintosh_config->ident == MAC_MODEL_IIFX) {
via2 = NULL;
rbv_present = 0;
oss_present = 1;
} else {
via2 = (void *) RBV_BASE;
rbv_present = 1;
oss_present = 0;
}
if (macintosh_config->ident == MAC_MODEL_LCIII) {
rbv_clear = 0x00;
} else {
/* on most RBVs (& unlike the VIAs), you */
/* need to set bit 7 when you write to IFR */
/* in order for your clear to occur. */
rbv_clear = 0x80;
}
gIER = rIER;
gIFR = rIFR;
gBufA = rSIFR;
gBufB = rBufB;
break;
/* Quadra and early MacIIs agree on the VIA locations */
case MAC_VIA_QUADRA:
case MAC_VIA_II:
via1 = (void *) VIA1_BASE;
via2 = (void *) VIA2_BASE;
rbv_present = 0;
oss_present = 0;
rbv_clear = 0x00;
gIER = vIER;
gIFR = vIFR;
gBufA = vBufA;
gBufB = vBufB;
break;
default:
panic("UNKNOWN VIA TYPE");
}
printk(KERN_INFO "VIA1 at %p is a 6522 or clone\n", via1);
printk(KERN_INFO "VIA2 at %p is ", via2);
if (rbv_present) {
printk("an RBV\n");
} else if (oss_present) {
printk("an OSS\n");
} else {
printk("a 6522 or clone\n");
}
#ifdef DEBUG_VIA
via_debug_dump();
#endif
/*
* Shut down all IRQ sources, reset the timers, and
* kill the timer latch on VIA1.
*/
via1[vIER] = 0x7F;
via1[vIFR] = 0x7F;
via1[vT1LL] = 0;
via1[vT1LH] = 0;
via1[vT1CL] = 0;
via1[vT1CH] = 0;
via1[vT2CL] = 0;
via1[vT2CH] = 0;
via1[vACR] &= ~0xC0; /* setup T1 timer with no PB7 output */
via1[vACR] &= ~0x03; /* disable port A & B latches */
/*
* SE/30: disable video IRQ
* XXX: testing for SE/30 VBL
*/
if (macintosh_config->ident == MAC_MODEL_SE30) {
via1[vDirB] |= 0x40;
via1[vBufB] |= 0x40;
}
/*
* Set the RTC bits to a known state: all lines to outputs and
* RTC disabled (yes that's 0 to enable and 1 to disable).
*/
via1[vDirB] |= (VIA1B_vRTCEnb | VIA1B_vRTCClk | VIA1B_vRTCData);
via1[vBufB] |= (VIA1B_vRTCEnb | VIA1B_vRTCClk);
/* Everything below this point is VIA2/RBV only... */
if (oss_present)
return;
if ((macintosh_config->via_type == MAC_VIA_QUADRA) &&
(macintosh_config->adb_type != MAC_ADB_PB1) &&
(macintosh_config->adb_type != MAC_ADB_PB2) &&
(macintosh_config->ident != MAC_MODEL_C660) &&
(macintosh_config->ident != MAC_MODEL_Q840)) {
via_alt_mapping = 1;
via1[vDirB] |= 0x40;
via1[vBufB] &= ~0x40;
} else {
via_alt_mapping = 0;
}
/*
* Now initialize VIA2. For RBV we just kill all interrupts;
* for a regular VIA we also reset the timers and stuff.
*/
via2[gIER] = 0x7F;
via2[gIFR] = 0x7F | rbv_clear;
if (!rbv_present) {
via2[vT1LL] = 0;
via2[vT1LH] = 0;
via2[vT1CL] = 0;
via2[vT1CH] = 0;
via2[vT2CL] = 0;
via2[vT2CH] = 0;
via2[vACR] &= ~0xC0; /* setup T1 timer with no PB7 output */
via2[vACR] &= ~0x03; /* disable port A & B latches */
}
/* Everything below this point is VIA2 only... */
if (rbv_present)
return;
/*
* Set vPCR for control line interrupts.
*
* CA1 (SLOTS IRQ), CB1 (ASC IRQ): negative edge trigger.
*
* Macs with ESP SCSI have a negative edge triggered SCSI interrupt.
* Testing reveals that PowerBooks do too. However, the SE/30
* schematic diagram shows an active high NCR5380 IRQ line.
*/
pr_debug("VIA2 vPCR is 0x%02X\n", via2[vPCR]);
if (macintosh_config->via_type == MAC_VIA_II) {
/* CA2 (SCSI DRQ), CB2 (SCSI IRQ): indep. input, pos. edge */
via2[vPCR] = 0x66;
} else {
/* CA2 (SCSI DRQ), CB2 (SCSI IRQ): indep. input, neg. edge */
via2[vPCR] = 0x22;
}
}
void __init via_init(void)
{
switch(macintosh_config->via_type) {
/* IIci, IIsi, IIvx, IIvi (P6xx), LC series */
case MAC_VIA_IIci:
via1 = (void *) VIA1_BASE;
if (macintosh_config->ident == MAC_MODEL_IIFX) {
via2 = NULL;
rbv_present = 0;
oss_present = 1;
} else {
via2 = (void *) RBV_BASE;
rbv_present = 1;
oss_present = 0;
}
if (macintosh_config->ident == MAC_MODEL_LCIII) {
rbv_clear = 0x00;
} else {
/* on most RBVs (& unlike the VIAs), you */
/* need to set bit 7 when you write to IFR */
/* in order for your clear to occur. */
rbv_clear = 0x80;
}
gIER = rIER;
gIFR = rIFR;
gBufA = rSIFR;
gBufB = rBufB;
break;
/* Quadra and early MacIIs agree on the VIA locations */
case MAC_VIA_QUADRA:
case MAC_VIA_II:
via1 = (void *) VIA1_BASE;
via2 = (void *) VIA2_BASE;
rbv_present = 0;
oss_present = 0;
rbv_clear = 0x00;
gIER = vIER;
gIFR = vIFR;
gBufA = vBufA;
gBufB = vBufB;
break;
default:
panic("UNKNOWN VIA TYPE");
}
printk("VIA1 at %p is a 6522 or clone\n", via1);
printk("VIA2 at %p is ", via2);
if (rbv_present) {
printk("an RBV\n");
} else if (oss_present) {
printk("an OSS\n");
} else {
printk("a 6522 or clone\n");
}
#ifdef DEBUG_VIA
via_debug_dump();
#endif
/*
* Shut down all IRQ sources, reset the timers, and
* kill the timer latch on VIA1.
*/
via1[vIER] = 0x7F;
via1[vIFR] = 0x7F;
via1[vT1LL] = 0;
via1[vT1LH] = 0;
via1[vT1CL] = 0;
via1[vT1CH] = 0;
via1[vT2CL] = 0;
via1[vT2CH] = 0;
via1[vACR] &= 0x3F;
/*
* SE/30: disable video IRQ
* XXX: testing for SE/30 VBL
*/
if (macintosh_config->ident == MAC_MODEL_SE30) {
via1[vDirB] |= 0x40;
via1[vBufB] |= 0x40;
}
/*
* Set the RTC bits to a known state: all lines to outputs and
* RTC disabled (yes that's 0 to enable and 1 to disable).
*/
via1[vDirB] |= (VIA1B_vRTCEnb | VIA1B_vRTCClk | VIA1B_vRTCData);
via1[vBufB] |= (VIA1B_vRTCEnb | VIA1B_vRTCClk);
/* Everything below this point is VIA2/RBV only... */
if (oss_present) return;
#if 1
/* Some machines support an alternate IRQ mapping that spreads */
/* Ethernet and Sound out to their own autolevel IRQs and moves */
/* VIA1 to level 6. A/UX uses this mapping and we do too. Note */
/* that the IIfx emulates this alternate mapping using the OSS. */
switch(macintosh_config->ident) {
case MAC_MODEL_C610:
case MAC_MODEL_Q610:
case MAC_MODEL_C650:
case MAC_MODEL_Q650:
case MAC_MODEL_Q700:
case MAC_MODEL_Q800:
case MAC_MODEL_Q900:
case MAC_MODEL_Q950:
via_alt_mapping = 1;
via1[vDirB] |= 0x40;
via1[vBufB] &= ~0x40;
break;
default:
via_alt_mapping = 0;
break;
}
#else
/* The alernate IRQ mapping seems to just not work. Anyone with a */
/* supported machine is welcome to take a stab at fixing it. It */
/* _should_ work on the following Quadras: 610,650,700,800,900,950 */
/* - 1999-06-12 (jmt) */
via_alt_mapping = 0;
#endif
/*
* Now initialize VIA2. For RBV we just kill all interrupts;
* for a regular VIA we also reset the timers and stuff.
*/
via2[gIER] = 0x7F;
via2[gIFR] = 0x7F | rbv_clear;
if (!rbv_present) {
via2[vT1LL] = 0;
via2[vT1LH] = 0;
via2[vT1CL] = 0;
via2[vT1CH] = 0;
via2[vT2CL] = 0;
via2[vT2CH] = 0;
via2[vACR] &= 0x3F;
}
}
void __init via_init(void)
{
switch(macintosh_config->via_type) {
/* IIci, IIsi, IIvx, IIvi (P6xx), LC series */
case MAC_VIA_IIci:
via1 = (void *) VIA1_BASE;
if (macintosh_config->ident == MAC_MODEL_IIFX) {
via2 = NULL;
rbv_present = 0;
oss_present = 1;
} else {
via2 = (void *) RBV_BASE;
rbv_present = 1;
oss_present = 0;
}
if (macintosh_config->ident == MAC_MODEL_LCIII) {
rbv_clear = 0x00;
} else {
/* on most RBVs (& unlike the VIAs), you */
/* need to set bit 7 when you write to IFR */
/* in order for your clear to occur. */
rbv_clear = 0x80;
}
gIER = rIER;
gIFR = rIFR;
gBufA = rSIFR;
gBufB = rBufB;
break;
/* Quadra and early MacIIs agree on the VIA locations */
case MAC_VIA_QUADRA:
case MAC_VIA_II:
via1 = (void *) VIA1_BASE;
via2 = (void *) VIA2_BASE;
rbv_present = 0;
oss_present = 0;
rbv_clear = 0x00;
gIER = vIER;
gIFR = vIFR;
gBufA = vBufA;
gBufB = vBufB;
break;
default:
panic("UNKNOWN VIA TYPE");
}
printk(KERN_INFO "VIA1 at %p is a 6522 or clone\n", via1);
printk(KERN_INFO "VIA2 at %p is ", via2);
if (rbv_present) {
printk("an RBV\n");
} else if (oss_present) {
printk("an OSS\n");
} else {
printk("a 6522 or clone\n");
}
#ifdef DEBUG_VIA
via_debug_dump();
#endif
/*
* Shut down all IRQ sources, reset the timers, and
* kill the timer latch on VIA1.
*/
via1[vIER] = 0x7F;
via1[vIFR] = 0x7F;
via1[vT1LL] = 0;
via1[vT1LH] = 0;
via1[vT1CL] = 0;
via1[vT1CH] = 0;
via1[vT2CL] = 0;
via1[vT2CH] = 0;
via1[vACR] &= ~0xC0; /* setup T1 timer with no PB7 output */
via1[vACR] &= ~0x03; /* disable port A & B latches */
/*
* SE/30: disable video IRQ
* XXX: testing for SE/30 VBL
*/
if (macintosh_config->ident == MAC_MODEL_SE30) {
via1[vDirB] |= 0x40;
via1[vBufB] |= 0x40;
}
/*
* Set the RTC bits to a known state: all lines to outputs and
* RTC disabled (yes that's 0 to enable and 1 to disable).
*/
via1[vDirB] |= (VIA1B_vRTCEnb | VIA1B_vRTCClk | VIA1B_vRTCData);
via1[vBufB] |= (VIA1B_vRTCEnb | VIA1B_vRTCClk);
/* Everything below this point is VIA2/RBV only... */
if (oss_present)
return;
/* Some machines support an alternate IRQ mapping that spreads */
/* Ethernet and Sound out to their own autolevel IRQs and moves */
/* VIA1 to level 6. A/UX uses this mapping and we do too. Note */
/* that the IIfx emulates this alternate mapping using the OSS. */
via_alt_mapping = 0;
if (macintosh_config->via_type == MAC_VIA_QUADRA)
switch (macintosh_config->ident) {
case MAC_MODEL_C660:
case MAC_MODEL_Q840:
/* not applicable */
break;
case MAC_MODEL_P588:
case MAC_MODEL_TV:
case MAC_MODEL_PB140:
case MAC_MODEL_PB145:
case MAC_MODEL_PB160:
case MAC_MODEL_PB165:
case MAC_MODEL_PB165C:
case MAC_MODEL_PB170:
case MAC_MODEL_PB180:
case MAC_MODEL_PB180C:
case MAC_MODEL_PB190:
case MAC_MODEL_PB520:
/* not yet tested */
break;
default:
via_alt_mapping = 1;
via1[vDirB] |= 0x40;
via1[vBufB] &= ~0x40;
break;
}
/*
* Now initialize VIA2. For RBV we just kill all interrupts;
* for a regular VIA we also reset the timers and stuff.
*/
via2[gIER] = 0x7F;
via2[gIFR] = 0x7F | rbv_clear;
if (!rbv_present) {
via2[vT1LL] = 0;
via2[vT1LH] = 0;
via2[vT1CL] = 0;
via2[vT1CH] = 0;
via2[vT2CL] = 0;
via2[vT2CH] = 0;
via2[vACR] &= ~0xC0; /* setup T1 timer with no PB7 output */
via2[vACR] &= ~0x03; /* disable port A & B latches */
}
/*
* Set vPCR for control line interrupts (but not on RBV)
*/
if (!rbv_present) {
/* For all VIA types, CA1 (SLOTS IRQ) and CB1 (ASC IRQ)
* are made negative edge triggered here.
*/
if (macintosh_config->scsi_type == MAC_SCSI_OLD) {
/* CB2 (IRQ) indep. input, positive edge */
/* CA2 (DRQ) indep. input, positive edge */
via2[vPCR] = 0x66;
} else {
/* CB2 (IRQ) indep. input, negative edge */
/* CA2 (DRQ) indep. input, negative edge */
via2[vPCR] = 0x22;
}
}
}
