src/soc/intel/xeon_sp/acpi/gen1/iiostack.asl

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2
   3 #define MAKE_IIO_DEV(id,rt)                                             \
   4         Device (PC##id)                                                 \
   5         {                                                               \
   6                 Name (_HID, EisaId ("PNP0A08") /* PCI Express Bus */)   \
   7                 Name (_CID, EisaId ("PNP0A03") /* PCI Bus */)           \
   8                 Name (_UID, 0x##id)                                     \
   9                 Method (_PRT, 0, NotSerialized)                         \
  10                 {                                                       \
  11                         If (PICM)                                       \
  12                         {                                               \
  13                                 Return (\_SB_.AR##rt)                   \
  14                         }                                               \
  15                         Return (\_SB_.PR##rt)                           \
  16                 }                                                       \
  17                 Name (SUPP, 0x00)                                       \
  18                 Name (CTRL, 0x00)                                       \
  19                 Name (_PXM, 0x00)  /* _PXM: Device Proximity */         \
  20                 Method (_OSC, 4, NotSerialized)                         \
  21                 {                                                       \
  22                         CreateDWordField (Arg3, 0x00, CDW1)             \
  23                         If ((Arg0 == ToUUID ("33db4d5b-1ff7-401c-9657-7441c03dd766") /* PCI Host Bridge Device */))  \
  24                         {                                                       \
  25                                 If (Arg2 < 0x03)                                \
  26                                 {                                               \
  27                                         CDW1 |= 0x02 /* Unknown failure */      \
  28                                         Return (Arg3)                           \
  29                                 }                                               \
  30                                 CreateDWordField (Arg3, 0x04, CDW2)             \
  31                                 CreateDWordField (Arg3, 0x08, CDW3)             \
  32                                 SUPP = CDW2                                     \
  33                                 CTRL = CDW3                                     \
  34                                 If ((SUPP & 0x16) != 0x16)              \
  35                                 {                                               \
  36                                         CTRL &= 0x1E                            \
  37                                 }                                               \
  38                                 /* Never allow SHPC (no SHPC controller in system) */ \
  39                                 CTRL &= 0x1D                                    \
  40                                 /* Disable Native PCIe AER handling from OS */  \
  41                                 CTRL &= 0x17                                    \
  42                                 If ((Arg1 != 1)) /* unknown revision */ \
  43                                 {                                               \
  44                                         CDW1 |= 0x08                            \
  45                                 }                                               \
  46                                 If ((CDW3 != CTRL)) /* capabilities bits were masked */ \
  47                                 {                                               \
  48                                         CDW1 |= 0x10                            \
  49                                 }                                               \
  50                                 CDW3 = CTRL                                     \
  51                                 Return (Arg3)                                   \
  52                         }                                                       \
  53                         Else                                                    \
  54                         {                                                       \
  55                                 /* indicate unrecognized UUID */                \
  56                                 CDW1 |= 0x04                                    \
  57                                 DBG0 = 0xEE                                     \
  58                                 Return (Arg3)                                   \
  59                         }                                                       \
  60                 }                                                               \
  61         }
  62
  63 MAKE_IIO_DEV(00, 00)
  64 MAKE_IIO_DEV(01, 10)
  65 MAKE_IIO_DEV(02, 20)
  66 MAKE_IIO_DEV(03, 28)
  67
  68 #if (CONFIG_MAX_SOCKET > 1)
  69 MAKE_IIO_DEV(06, 40)
  70 MAKE_IIO_DEV(07, 50)
  71 MAKE_IIO_DEV(08, 60)
  72 MAKE_IIO_DEV(09, 68)
  73 #endif