diff options
Diffstat (limited to 'src/southbridge/intel/i82371eb/acpi/pirq.asl')
| -rw-r--r-- | src/southbridge/intel/i82371eb/acpi/pirq.asl | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/src/southbridge/intel/i82371eb/acpi/pirq.asl b/src/southbridge/intel/i82371eb/acpi/pirq.asl new file mode 100644 index 0000000000..8b25fd8069 --- /dev/null +++ b/src/southbridge/intel/i82371eb/acpi/pirq.asl @@ -0,0 +1,79 @@ +/* + * This file is part of the coreboot project. + * + * Copyright (C) 2010 Tobias Diedrich <ranma+coreboot@tdiedrich.de> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +Field (\_SB.PCI0.LPCB.PCIC, AnyAcc, NoLock, Preserve) +{ + Offset (0x60), // Interrupt Routing Registers + PRTA, 8, + PRTB, 8, + PRTC, 8, + PRTD, 8, +} + +Name(IRQB, ResourceTemplate(){ + IRQ(Level,ActiveLow,Shared){15} +}) + +Name(IRQP, ResourceTemplate(){ + IRQ(Level,ActiveLow,Exclusive){3, 4, 5, 6, 7, 10, 11, 12} +}) + +/* adapted from ma78gm/dsdt.asl */ +#define PCI_INTX_DEV(intx, pinx, uid) \ +Device(intx) { \ + Name(_HID, EISAID("PNP0C0F")) \ + Name(_UID, uid) \ + \ + Method(_STA, 0) { \ + If (And(pinx, 0x80)) { \ + Return(0x09) \ + } \ + Return(0x0B) \ + } \ + \ + Method(_DIS ,0) { \ + Store(0x80, pinx) \ + } \ + \ + Method(_PRS ,0) { \ + Return(IRQP) \ + } \ + \ + Method(_CRS ,0) { \ + CreateWordField(IRQB, 1, IRQN) \ + ShiftLeft(1, And(pinx, 0x0f), IRQN) \ + Return(IRQB) \ + } \ + \ + Method(_SRS, 1) { \ + CreateWordField(ARG0, 1, IRQM) \ + \ + /* Use lowest available IRQ */ \ + FindSetRightBit(IRQM, Local0) \ + if (Local0) { \ + Decrement(Local0) \ + } \ + Store(Local0, pinx) \ + } \ +} \ + +PCI_INTX_DEV(LNKA, PRTA, 1) +PCI_INTX_DEV(LNKB, PRTB, 2) +PCI_INTX_DEV(LNKC, PRTC, 3) +PCI_INTX_DEV(LNKD, PRTD, 4) |