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Diffstat (limited to 'src/arch/amd64/drivers/pic.c')
-rw-r--r--src/arch/amd64/drivers/pic.c89
1 files changed, 0 insertions, 89 deletions
diff --git a/src/arch/amd64/drivers/pic.c b/src/arch/amd64/drivers/pic.c
deleted file mode 100644
index be7716f..0000000
--- a/src/arch/amd64/drivers/pic.c
+++ /dev/null
@@ -1,89 +0,0 @@
-#include "../bindings.h"
-#include "pic.h"
-
-#define PIC1 0x20 /* IO base address for master PIC */
-#define PIC2 0xA0 /* IO base address for slave PIC */
-#define PIC1_COMMAND PIC1
-#define PIC1_DATA (PIC1+1)
-#define PIC2_COMMAND PIC2
-#define PIC2_DATA (PIC2+1)
-
-#define PIC_EOI 0x20 /* End-of-interrupt command code */
-
-#define ICW1_ICW4 0x01 /* Indicates that ICW4 will be present */
-#define ICW1_SINGLE 0x02 /* Single (cascade) mode */
-#define ICW1_INTERVAL4 0x04 /* Call address interval 4 (8) */
-#define ICW1_LEVEL 0x08 /* Level triggered (edge) mode */
-#define ICW1_INIT 0x10 /* Initialization - required! */
-
-#define ICW4_8086 0x01 /* 8086/88 (MCS-80/85) mode */
-#define ICW4_AUTO 0x02 /* Auto (normal) EOI */
-#define ICW4_BUF_SLAVE 0x08 /* Buffered mode/slave */
-#define ICW4_BUF_MASTER 0x0C /* Buffered mode/master */
-#define ICW4_SFNM 0x10 /* Special fully nested (not) */
-
-void pic_remap(void) {
- uint8_t a1, a2;
-
- a1 = inb(PIC1_DATA); // save masks
- a2 = inb(PIC2_DATA);
-
- outb(PIC1_COMMAND, ICW1_INIT | ICW1_ICW4); // starts the initialization sequence (in cascade mode)
- io_wait();
- outb(PIC2_COMMAND, ICW1_INIT | ICW1_ICW4);
- io_wait();
- outb(PIC1_DATA, PIC_REMAP_OFFSET); // ICW2: Master PIC vector offset
- io_wait();
- outb(PIC2_DATA, PIC_REMAP_OFFSET + 8); // ICW2: Slave PIC vector offset
- io_wait();
- outb(PIC1_DATA, 4); // ICW3: tell Master PIC that there is a slave PIC at IRQ2 (0000 0100)
- io_wait();
- outb(PIC2_DATA, 2); // ICW3: tell Slave PIC its cascade identity (0000 0010)
- io_wait();
-
- outb(PIC1_DATA, ICW4_8086); // ICW4: have the PICs use 8086 mode (and not 8080 mode)
- io_wait();
- outb(PIC2_DATA, ICW4_8086);
- io_wait();
-
- outb(PIC1_DATA, a1); // restore saved masks.
- outb(PIC2_DATA, a2);
-}
-
-void pic_mask(int irq) {
- uint16_t port;
- uint8_t mask;
- if (irq < 8) {
- port = PIC1_DATA;
- } else {
- port = PIC2_DATA;
- irq -= 8;
- }
- mask = inb(port) | (1 << irq);
- outb(port, mask);
-}
-
-void pic_unmask(int irq) {
- uint16_t port;
- uint8_t mask;
- if (irq < 8) {
- port = PIC1_DATA;
- } else {
- irq -= 8;
- port = PIC2_DATA;
- }
- mask = inb(port) & ~(1 << irq);
- outb(port, mask);
-}
-
-void pic_disable(void) {
- outb(PIC1_DATA, 0xff);
- outb(PIC2_DATA, 0xff);
-}
-
-void pic_eoi(int irq) {
- if (irq >= 8) {
- outb(PIC2_COMMAND, PIC_EOI);
- }
- outb(PIC1_COMMAND, PIC_EOI);
-}