2 files changed, 16 insertions, 0 deletions
diff --git a/sys/include/arch/amd64/lapic.h b/sys/include/arch/amd64/lapic.h
index 6c72c02..b8fae1b 100644
--- a/sys/include/arch/amd64/lapic.h
+++ b/sys/include/arch/amd64/lapic.h
@@ -35,9 +35,23 @@
 #define LAPIC_TMR_ONESHOT   0x00
 #define LAPIC_TMR_PERIODIC  0x01
 
+/* IPI Destination Shorthands */
+enum {
+    IPI_SHORTHAND_SELF,
+    IPI_SHORTHAND_ALL,
+    IPI_SHORTHAND_OTHERS
+};
+
+/* IPI Destination Modes */
+enum {
+    IPI_DEST_PHYSICAL,
+    IPI_DEST_LOGICAL
+};
+
 void lapic_timer_init(size_t *freq_out);
 void lapic_timer_oneshot(bool mask, uint32_t count);
 void lapic_timer_oneshot_us(uint32_t us);
+void lapic_send_ipi(uint8_t id, uint8_t shorthand, uint8_t vector);
 void lapic_init(void);
 
 #endif  /* !_AMD64_LAPIC_H_ */
diff --git a/sys/include/arch/amd64/lapicvar.h b/sys/include/arch/amd64/lapicvar.h
index 2743be8..84f73d2 100644
--- a/sys/include/arch/amd64/lapicvar.h
+++ b/sys/include/arch/amd64/lapicvar.h
@@ -47,6 +47,8 @@
 #define LAPIC_TMR           0x0180U     /* Trigger Mode Register (max=0x0220) */
 #define LAPIC_IRR           0x0200U     /* Interrupt Request Register (max=0x0270) */
 #define LAPIC_ERR           0x0280U     /* Error Status Register */
+#define LAPIC_ICRLO         0x0300U     /* Interrupt Command Low Register */
+#define LAPIC_ICRHI         0x0310U     /* Interrupt Command High Register */
 #define LAPIC_LVT_TMR       0x0320U     /* LVT Timer Register */
 #define LAPIC_DCR           0x03E0U     /* Divide Configuration Register (for timer) */
 #define LAPIC_INIT_CNT      0x0380U     /* Initial Count Register (for timer) */