From 579f13402d7a29e4c7d55018eadbae1973eb608b Mon Sep 17 00:00:00 2001
From: OBattler <oubattler@gmail.com>
Date: Mon, 28 Aug 2017 06:58:51 +0200
Subject: [PATCH] Primary and secondary IDE controller IRQ's can now be
 level-triggered on PCI boards if so configured.

---
 src/hdd/hdd_ide_at.c | 17 ++++++++++++++++-
 src/pci.h            |  1 +
 2 files changed, 17 insertions(+), 1 deletion(-)

diff --git a/src/hdd/hdd_ide_at.c b/src/hdd/hdd_ide_at.c
index 0544d8610..fbc256540 100644
--- a/src/hdd/hdd_ide_at.c
+++ b/src/hdd/hdd_ide_at.c
@@ -28,6 +28,7 @@
 #include "hdd_image.h"
 #include "../io.h"
 #include "../pic.h"
+#include "../pci.h"
 #include "../timer.h"
 #include "../cdrom.h"
 #include "../scsi/scsi.h"
@@ -171,7 +172,21 @@ void ide_irq_raise(IDE *ide)
 	
 	if (!(ide->fdisk&2))
 	{
-		picint(1 << ide_irq[ide->board]);
+		if (PCI && (ide->board < 2))
+		{
+			if (pci_irq_is_level(ide_irq[ide->board]))
+			{
+				picintlevel(1 << ide_irq[ide->board]);
+			}
+			else
+			{
+				picint(1 << ide_irq[ide->board]);
+			}
+		}
+		else
+		{
+			picint(1 << ide_irq[ide->board]);
+		}
 
 		if (ide->board < 2)
 		{
diff --git a/src/pci.h b/src/pci.h
index f1cecc952..7f1e69857 100644
--- a/src/pci.h
+++ b/src/pci.h
@@ -8,6 +8,7 @@ void pci_set_irq_routing(int card, int irq);
 void pci_set_card_routing(int card, int pci_int);
 void pci_set_irq(int card, int pci_int);
 void pci_clear_irq(int card, int pci_int);
+int pci_irq_is_level(int irq);
 
 #define PCI_REG_COMMAND 0x04