src/southbridge/intel/i82371eb/acpi/intx.asl

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 Name(IRQB, ResourceTemplate(){
   3         IRQ(Level,ActiveLow,Shared){}
   4 })
   5
   6 Name(IRQP, ResourceTemplate(){
   7         IRQ(Level,ActiveLow,Shared){3, 4, 5, 6, 7, 10, 11, 12, 14, 15}
   8 })
   9
  10 /* adapted from ma78gm/dsdt.asl */
  11 #define PCI_INTX_DEV(intx, pinx, uid)                   \
  12 Device(intx) {                                          \
  13         Name(_HID, EISAID("PNP0C0F"))                   \
  14         Name(_UID, uid)                                 \
  15                                                         \
  16         Method(_STA, 0) {                               \
  17                 If (pinx & 0x80) {                      \
  18                         Return(0x09)                    \
  19                 }                                       \
  20                 Return(0x0B)                            \
  21         }                                               \
  22                                                         \
  23         Method(_DIS ,0) {                               \
  24                 pinx = 0x80                     \
  25         }                                               \
  26                                                         \
  27         Method(_PRS ,0) {                               \
  28                 Return(IRQP)                            \
  29         }                                               \
  30                                                         \
  31         Method(_CRS ,0) {                               \
  32                 CreateWordField(IRQB, 1, IRQN)          \
  33                 IRQN = 1 << (pinx & 0x0f)               \
  34                 Return(IRQB)                            \
  35         }                                               \
  36                                                         \
  37         Method(_SRS, 1) {                               \
  38                 CreateWordField(ARG0, 1, IRQM)          \
  39                                                         \
  40                 /* Use lowest available IRQ */          \
  41                 FindSetRightBit(IRQM, Local0)           \
  42                 if (Local0) {                           \
  43                         Local0--                        \
  44                 }                                       \
  45                 pinx = Local0                   \
  46         }                                               \
  47 }