From 1652e1239cf1ef85a7768cc17ab48b2e054a7b7b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Nicolas=20Hord=C3=A9?= <nicolas@palon.fr>
Date: Mon, 2 Apr 2007 13:20:26 +0000
Subject: [PATCH] =?UTF-8?q?feat:=20ensemble=20de=20fonctions=20permettant?=
 =?UTF-8?q?=20la=20gestion=20des=20IRQs=20et=20des=20interruptions=20en=20?=
 =?UTF-8?q?mode=20prot=C3=A9g=C3=A9?=
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---
 lib/irq.c | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 lib/irq.c

diff --git a/lib/irq.c b/lib/irq.c
new file mode 100644
index 0000000..6c78754
--- /dev/null
+++ b/lib/irq.c
@@ -0,0 +1,36 @@
+void setpic(void)
+{
+	/* MASTER */
+	/* Initialisation de ICW1 */
+	outbp(0x20,0x11);
+	/* Initialisation de ICW2 - vecteur de depart = 32 */
+	outbp(0x21,0x20);            
+	/* Initialisation de ICW3 */
+	outbp(0x21,0x04);
+	/* Initialisation de ICW4 */
+	outbp(0x21,0x01);
+	/* masquage des interruptions */
+	outbp(0x21,0xFF);
+	/* SLAVE */
+	/* Initialisation de ICW1 */
+	outbp(0xA0,0x11);
+	/* Initialisation de ICW2 - vecteur de depart = 96 */
+	outbp(0xA1,0x70);      
+	/* Initialisation de ICW3 */
+	outbp(0xA1,0x02);
+	/* Initialisation de ICW4 */
+	outbp(0xA1,0x01);
+	/* masquage des interruptions */
+	outbp(0xA1,0xFF);
+	/* Demasquage des irqs */
+	outbp(0x21,0xFD);
+}
+
+void makeidtdesc(u32 offset, u16 select, u16 type, idtdesc* desc) 
+{
+	desc->offset0_15 = (offset & 0xffff);
+	desc->select = select;
+	desc->type = type;
+	desc->offset16_31 = (offset & 0xffff0000) >> 16;
+	return;
+}