From 43607e4751d41e57d16f31a8a882a331e5493be1 Mon Sep 17 00:00:00 2001
From: Tim Wawrzynczak <twawrzynczak@chromium.org>
Date: Tue, 18 May 2021 09:04:42 -0600
Subject: soc/intel/alderlake: Enable support for common IRQ block

Since GPIO IO-APIC IRQs are fixed in hardware (RO registers), this patch
allows ADL boards to dynamically assign PCI IRQs. This means not relying
on FSP defaults, which eliminates the problem of PCI IRQs interfering
with GPIO IRQs routed to the same IRQ, when both have selected IO-APIC
routing.

BUG=b:176858827
TEST=brya0, grep 'IO-APIC' /proc/interrupts (compressed to fit)
   0:   36     0  0  0     0    0    0   0   IO-APIC    2-edge      time
   1:    0     0  9  0     0    0    0   0   IO-APIC    1-edge      i804
   8:    0     0  0  0     0    0    0   0   IO-APIC    8-edge      rtc0
   9:    0 21705  0  0     0    0    0   0   IO-APIC    9-fasteoi   acpi
  14:    0     0  0  0     0    0    0   0   IO-APIC   14-fasteoi   INTC
  18:    0     0  0  0     0    0    0   0   IO-APIC   18-fasteoi   inte
  20:    0     0  0  0     0    0    0 394   IO-APIC   20-fasteoi   idma
  23: 2280     0  0  0     0    0    0   0   IO-APIC   23-fasteoi   idma
  26:    0     0 26  0     0    0    0   0   IO-APIC   26-fasteoi   idma
  27:    0     0  0  6     0    0    0   0   IO-APIC   27-fasteoi   idma
  28:    0     0  0  0     0    0    0   0   IO-APIC   28-fasteoi   idma
  29:    0     0  0  0 25784    0    0   0   IO-APIC   29-fasteoi   idma
  30:    0     0  0  0     0    0    0   0   IO-APIC   30-fasteoi   idma
  31:    0     0  0  0     0    0  226   0   IO-APIC   31-fasteoi   idma
  77:    0     0  0  0     0 2604    0   0   IO-APIC   77-edge      cr50
 100:    0     0  0  0     0    0    0   0   IO-APIC  100-fasteoi   ELAN
 103:    0     0  0  0     0    0    0   0   IO-APIC  103-fasteoi   chro
abbreviated _PRT dump:
    If (PICM)
          Package (){0x0002FFFF, 0, 0, 0x10},
          Package (){0x0004FFFF, 0, 0, 0x11},
          Package (){0x0005FFFF, 0, 0, 0x12},
          Package (){0x0006FFFF, 0, 0, 0x13},
          Package (){0x0006FFFF, 1, 0, 0x14},
          Package (){0x0007FFFF, 0, 0, 0x15},
          Package (){0x0007FFFF, 1, 0, 0x16},
          Package (){0x0007FFFF, 2, 0, 0x17},
          Package (){0x0007FFFF, 3, 0, 0x10},
          Package (){0x000DFFFF, 0, 0, 0x11},
          Package (){0x0012FFFF, 0, 0, 0x18},
          Package (){0x0012FFFF, 1, 0, 0x19},
          Package (){0x0014FFFF, 0, 0, 0x12},
          Package (){0x0014FFFF, 1, 0, 0x13},
          Package (){0x0015FFFF, 0, 0, 0x1A},
          Package (){0x0015FFFF, 1, 0, 0x1B},
          Package (){0x0015FFFF, 2, 0, 0x1C},
          Package (){0x0015FFFF, 3, 0, 0x1D},
          Package (){0x0016FFFF, 0, 0, 0x14},
          Package (){0x0016FFFF, 1, 0, 0x15},
          Package (){0x0016FFFF, 2, 0, 0x16},
          Package (){0x0016FFFF, 3, 0, 0x17},
          Package (){0x0017FFFF, 0, 0, 0x10},
          Package (){0x0019FFFF, 0, 0, 0x1E},
          Package (){0x0019FFFF, 1, 0, 0x1F},
          Package (){0x0019FFFF, 2, 0, 0x20},
          Package (){0x001CFFFF, 0, 0, 0x10},
          Package (){0x001CFFFF, 1, 0, 0x11},
          Package (){0x001CFFFF, 2, 0, 0x12},
          Package (){0x001CFFFF, 3, 0, 0x13},
          Package (){0x001DFFFF, 0, 0, 0x10},
          Package (){0x001DFFFF, 1, 0, 0x11},
          Package (){0x001DFFFF, 2, 0, 0x12},
          Package (){0x001DFFFF, 3, 0, 0x13},
          Package (){0x001EFFFF, 0, 0, 0x14},
          Package (){0x001EFFFF, 1, 0, 0x15},
          Package (){0x001EFFFF, 2, 0, 0x16},
          Package (){0x001EFFFF, 3, 0, 0x17},
          Package (){0x001FFFFF, 1, 0, 0x15},
          Package (){0x001FFFFF, 2, 0, 0x16},
          Package (){0x001FFFFF, 3, 0, 0x17},
          Package (){0x001FFFFF, 0, 0, 0x14},
    Else
          Package (){0x0002FFFF, 0, 0, 0x0B},
	  Package (){0x0004FFFF, 0, 0, 0x0A},
	  Package (){0x0005FFFF, 0, 0, 0x0B},
	  Package (){0x0006FFFF, 0, 0, 0x0B},
	  Package (){0x0006FFFF, 1, 0, 0x0B},
	  Package (){0x0007FFFF, 0, 0, 0x0B},
	  Package (){0x0007FFFF, 1, 0, 0x0B},
	  Package (){0x0007FFFF, 2, 0, 0x0B},
	  Package (){0x0007FFFF, 3, 0, 0x0B},
	  Package (){0x000DFFFF, 0, 0, 0x0A},
	  Package (){0x0014FFFF, 0, 0, 0x0B},
	  Package (){0x0014FFFF, 1, 0, 0x0B},
	  Package (){0x0016FFFF, 0, 0, 0x0B},
	  Package (){0x0016FFFF, 1, 0, 0x0B},
	  Package (){0x0016FFFF, 2, 0, 0x0B},
	  Package (){0x0016FFFF, 3, 0, 0x0B},
	  Package (){0x0017FFFF, 0, 0, 0x0B},
	  Package (){0x001CFFFF, 0, 0, 0x0B},
	  Package (){0x001CFFFF, 1, 0, 0x0A},
	  Package (){0x001CFFFF, 2, 0, 0x0B},
	  Package (){0x001CFFFF, 3, 0, 0x0B},
	  Package (){0x001DFFFF, 0, 0, 0x0B},
	  Package (){0x001DFFFF, 1, 0, 0x0A},
	  Package (){0x001DFFFF, 2, 0, 0x0B},
	  Package (){0x001DFFFF, 3, 0, 0x0B},
	  Package (){0x001EFFFF, 0, 0, 0x0B},
	  Package (){0x001EFFFF, 1, 0, 0x0B},
	  Package (){0x001EFFFF, 2, 0, 0x0B},
	  Package (){0x001EFFFF, 3, 0, 0x0B},
	  Package (){0x001FFFFF, 1, 0, 0x0B},
	  Package (){0x001FFFFF, 2, 0, 0x0B},
	  Package (){0x001FFFFF, 3, 0, 0x0B},
	  Package (){0x001FFFFF, 0, 0, 0x0B},
dmesg shows no GSI or PCI errors, TPM & touchpad IRQs still work

Signed-off-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Change-Id: I1e7a708183ac4170b28da9565137fa2f5088a7eb
Reviewed-on: https://review.coreboot.org/c/coreboot/+/54683
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
---
 src/soc/intel/alderlake/acpi/southbridge.asl | 3 ---
 1 file changed, 3 deletions(-)

(limited to 'src/soc/intel/alderlake/acpi/southbridge.asl')

diff --git a/src/soc/intel/alderlake/acpi/southbridge.asl b/src/soc/intel/alderlake/acpi/southbridge.asl
index 3a53f2c9d1..59bcf7461f 100644
--- a/src/soc/intel/alderlake/acpi/southbridge.asl
+++ b/src/soc/intel/alderlake/acpi/southbridge.asl
@@ -5,9 +5,6 @@
 #include <soc/itss.h>
 #include <soc/pcr_ids.h>
 
-/* PCI IRQ assignment */
-#include "pci_irqs.asl"
-
 /* PCR access */
 #include <soc/intel/common/acpi/pcr.asl>
 
-- 
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