From 2341a0705164e94d0874572505b60680fdbe631f Mon Sep 17 00:00:00 2001
From: dzwdz
Date: Wed, 17 Aug 2022 12:49:34 +0200
Subject: amd64: rtl8139 driver with basic rx support

---
 src/kernel/arch/amd64/interrupts/irq.c | 5 +++--
 src/kernel/arch/amd64/interrupts/irq.h | 2 ++
 src/kernel/arch/amd64/interrupts/isr.c | 6 ++++++
 3 files changed, 11 insertions(+), 2 deletions(-)

(limited to 'src/kernel/arch/amd64/interrupts')

diff --git a/src/kernel/arch/amd64/interrupts/irq.c b/src/kernel/arch/amd64/interrupts/irq.c
index 1760825..818ea8e 100644
--- a/src/kernel/arch/amd64/interrupts/irq.c
+++ b/src/kernel/arch/amd64/interrupts/irq.c
@@ -24,11 +24,12 @@ void irq_init(void) {
 	port_out8(PIC2+1, 0x1);
 
 	uint16_t mask = 0xffff;
-	mask &= ~(1 << IRQ_PIT);
 	mask &= ~(1 << 2); // cascade
-	mask &= ~(1 << IRQ_PS2KB);
 	mask &= ~(1 << IRQ_COM1);
+	mask &= ~(1 << IRQ_PIT);
+	mask &= ~(1 << IRQ_PS2KB);
 	mask &= ~(1 << IRQ_PS2MOUSE);
+	mask &= ~(1 << IRQ_RTL8139);
 
 	port_out8(PIC1+1, mask & 0xff);
 	port_out8(PIC2+1, (mask >> 8) & 0xff);
diff --git a/src/kernel/arch/amd64/interrupts/irq.h b/src/kernel/arch/amd64/interrupts/irq.h
index 3243224..f949824 100644
--- a/src/kernel/arch/amd64/interrupts/irq.h
+++ b/src/kernel/arch/amd64/interrupts/irq.h
@@ -8,5 +8,7 @@
 #define IRQ_COM1 4
 #define IRQ_PS2MOUSE 12
 
+#define IRQ_RTL8139 11
+
 void irq_init(void);
 void irq_eoi(uint8_t line);
diff --git a/src/kernel/arch/amd64/interrupts/isr.c b/src/kernel/arch/amd64/interrupts/isr.c
index d1c2b26..17dce6e 100644
--- a/src/kernel/arch/amd64/interrupts/isr.c
+++ b/src/kernel/arch/amd64/interrupts/isr.c
@@ -1,4 +1,5 @@
 #include <kernel/arch/amd64/driver/ps2.h>
+#include <kernel/arch/amd64/driver/rtl8139.h>
 #include <kernel/arch/amd64/driver/serial.h>
 #include <kernel/arch/amd64/interrupts/irq.h>
 #include <kernel/arch/amd64/interrupts/isr.h>
@@ -45,6 +46,11 @@ void isr_stage3(int interrupt, uint64_t *stackframe) {
 			irq_eoi(IRQ_COM1);
 			return;
 
+		case IRQ_IBASE + IRQ_RTL8139:
+			rtl8139_irq();
+			irq_eoi(interrupt - IRQ_IBASE);
+			return;
+
 		default:
 			if ((stackframe[1] & 0x3) == 0) {
 				log_interrupt(interrupt, stackframe);
-- 
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