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working on ocw2

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Signed-off-by: Julien CLEMENT <julien.clement@epita.fr>
This commit is contained in:
Julien CLEMENT 2021-07-26 00:24:04 +02:00
parent 87eaa96d0c
commit 7ceec0ee06
3 changed files with 14 additions and 0 deletions
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3
k/idt.c
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@ -43,6 +43,9 @@ static struct idt_entry_descriptor idt_entries_descriptors[IDT_NB_ENTRIES] = {
void interrupt_handler(struct isr_param *isr_param) void interrupt_handler(struct isr_param *isr_param)
{ {
printf("Oh no %d!\r\n", isr_param->int_vector); printf("Oh no %d!\r\n", isr_param->int_vector);
if (isr_param->int_vector > IDT_RESERVED_ENTRIES
&& isr_param->int_vector < IDT_RESERVED_ENTRIES + 16)
acknowledge(isr_param->int_vector);
} }
struct idt_entry create_idt_entry(struct idt_entry_descriptor descriptor) struct idt_entry create_idt_entry(struct idt_entry_descriptor descriptor)

10
k/pic.c
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@ -1,6 +1,7 @@
#include "idt.h" #include "idt.h"
#include "io.h" #include "io.h"
#include "pic.h" #include "pic.h"
#include "stdio.h"
static void send_icw1(void) static void send_icw1(void)
{ {
@ -42,3 +43,12 @@ void init_pic(void)
mask_irqs(); mask_irqs();
asm volatile("sti"); asm volatile("sti");
} }
void acknowledge(uint32_t int_vector)
{
printf("acknowledging %d\r\n", int_vector);
uint8_t ocw2 = 0x20;
if (int_vector >= IDT_RESERVED_ENTRIES + 8)
outb(SLAVE_PIC_A, ocw2);
outb(MASTER_PIC_A, ocw2);
}

1
k/pic.h
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@ -9,5 +9,6 @@
#define ICW1 0x11 #define ICW1 0x11
void init_pic(void); void init_pic(void);
void acknowledge(uint32_t int_vector);
#endif /* !PIC_H */ #endif /* !PIC_H */