/* testing
*/
void rtl8139_test(void)
{
net_buf_t* nb_head;
net_buf_t* nb_tail;
net_buf_t* nb_pos;
rtl8139_dev_t* dev;
TRACE_ENTRY();
dev = (rtl8139_dev_t*)g_device->priv;
while (1)
{
/* icmp_ping(g_device, NET_REMOTE_ADDR); */
cpu_hlt();
#if 0
cpu_cli();
arp_print_table();
cpu_sti();
#endif
}
while (1)
{
nb_head = null;
nb_tail = null;
cpu_hlt();
/* safely get the net buffers */
cpu_cli();
if (!is_null(dev->nb_head))
{
for (nb_pos = dev->nb_head; nb_pos->next; nb_pos = nb_pos->next)
;
if (!is_null(nb_tail))
nb_tail->next = dev->nb_head;
else
nb_head = dev->nb_head;
nb_tail = nb_pos;
}
dev->nb_head = null;
cpu_sti();
/* print and release net buffers */
while (nb_head)
{
nb_pos = nb_head;
nb_head = nb_head->next;
/* hexdump(nb_pos->buf, nb_pos->size); */
mm_free(nb_pos->buf);
mm_free(nb_pos);
}
arp_print_table();
}
}
// 调用中断处理函数
void isr_handler(pt_regs_t *regs)
{
if (interrupt_handlers[regs->int_no]) {
interrupt_handlers[regs->int_no](regs);
} else {
printk_color(rc_black, rc_blue, "Unhandled interrupt: %d %s\n", regs->int_no, intrname(regs->int_no));
cpu_hlt();
}
}
void isr_handler(pt_regs_t *regs){
if(interrupt_handlers[regs->int_no]){
interrupt_handlers[regs->int_no](regs);
}else{
printk("unable interrupt %d %s\n",regs->int_no,intrname(regs->int_no));
cpu_hlt();
}
return ;
}
error_t sched_yield(void)
{
task_t* current;
volatile uint32_t* timeslice;
current = sched_get_current();
timeslice = ¤t->timeslice;
*timeslice = 0;
/* fixme: race here
*/
while (*timeslice == 0)
cpu_hlt();
return ERROR_SUCCESS;
}
// 读取一个字符
char getchar(void)
{
char ch;
char_dev_t *kb_dev = &kboard_dev;
if (!kb_dev->ops.device_valid()) {
return 0;
}
while (kb_dev->ops.read(&ch, 1) == 1) {
cpu_hlt();
return ch;
}
return 0;
}
static inline void stop_this_cpu(void)
{
/* Called by an AP when it is ready to halt and wait for a new task */
for (;;)
cpu_hlt();
}
void kernel_main(unsigned long magic,
unsigned long addr)
{
multiboot_info_t *mbi;
if (magic != MULTIBOOT_BOOTLOADER_MAGIC)
return;
mbi = (multiboot_info_t*)addr;
/* kernel init
*/
serial_init(DEBUG_SERIAL_PORT,
DEBUG_SERIAL_SPEED,
UART_8BITS_WORD,
UART_NO_PARITY,
UART_1_STOP_BIT);
cls();
cpu_cli();
printf("[x] interrupts disabled\n");
gdt_initialize();
printf("[x] gdt initialized\n");
idt_initialize();
printf("[x] idt initialized\n");
breakpoint_initialize();
#if defined(USE_APIC)
apic_initialize();
serial_printl("[x] apic initialized\n");
#else
pic_initialize();
serial_printl("[x] pic initialized\n");
#endif /* USE_APIC */
/* initialize the kernel
*/
{
kernel_init(mbi);
}
/* memory initialization
*/
{
phys_init(mbi);
phys_debug();
/* vm_init(); */
/* unit_test_vm(); */
/* cpu_hlt(); */
}
#if defined(USE_PCI)
pci_initialize();
pci_list();
#endif
cpu_sti();
#if defined(USE_TASK)
{
/* subsystems
*/
event_initialize();
sched_initialize();
task_initialize();
/* tasks
*/
idle_initialize();
muksh_initialize();
net_initialize();
/* task_test(); */
/* start scheduling
*/
sched_start();
}
#endif
/* endless loop
*/
serial_printl("[?] kernel loop\n");
while (1)
{
serial_printl("k");
cpu_hlt();
}
}