kernel/arch/i386/include/hw_intr.h

   1 #ifndef __HW_INTR_X86_H__
   2 #define __HW_INTR_X86_H__
   3
   4 #include "kernel/kernel.h"
   5 void irq_8259_unmask(int irq);
   6 void irq_8259_mask(int irq);
   7 void irq_8259_eoi(int irq);
   8 void irq_handle(int irq);
   9 void i8259_disable(void);
  10 void eoi_8259_master(void);
  11 void eoi_8259_slave(void);
  12
  13 /*
  14  * we don't use IO APIC if not configured for SMP as we cannot read any info
  15  * about it unless we use MPS which is not present on all single CPU
  16  * configurations. ACPI would be another option, however we don't support it
  17  * either
  18  */
  19 #if defined(USE_APIC)
  20 #include "arch/i386/apic.h"
  21
  22 #define hw_intr_mask(irq)       ioapic_mask_irq(irq)
  23 #define hw_intr_unmask(irq)     ioapic_unmask_irq(irq)
  24 #define hw_intr_ack(irq)        ioapic_eoi(irq)
  25 #define hw_intr_used(irq)       do {                                    \
  26                                         if (ioapic_enabled)             \
  27                                                 ioapic_set_irq(irq);    \
  28                                 } while (0)
  29 #define hw_intr_not_used(irq)   do {                                    \
  30                                         if (ioapic_enabled)             \
  31                                                 ioapic_unset_irq(irq);  \
  32                                 } while (0)
  33 #define hw_intr_disable_all() do {                                      \
  34                                         ioapic_disable_all();           \
  35                                         ioapic_reset_pic();             \
  36                                         lapic_disable();                \
  37                                 } while (0)
  38 #ifdef CONFIG_SMP
  39 #define ipi_ack                 apic_eoi
  40 #endif
  41
  42 #else
  43 /* legacy PIC */
  44
  45 #define hw_intr_mask(irq)       irq_8259_mask(irq)
  46 #define hw_intr_unmask(irq)     irq_8259_unmask(irq)
  47 #define hw_intr_ack(irq)        irq_8259_eoi(irq)
  48 #define hw_intr_used(irq)
  49 #define hw_intr_not_used(irq)
  50 #define hw_intr_disable_all()
  51
  52 #endif
  53
  54 #endif /* __HW_INTR_X86_H__ */