stos/amd64: lapic: Add support for IPIs

Signed-off-by: Chloe M. <chloe@mensia.org>
2026-06-26 22:47:01 +00:00
parent 9f040b7eed
commit 1bebf4d37b
3 changed files with 77 additions and 1 deletions
@@ -51,7 +51,7 @@ typedef enum {
 } IPI_DELMOD;

 /* IPI Delivery status bits */
-#define IPI_DELSTAT_PENDING BIT(0)
+#define IPI_DELSTAT_PENDING BIT(12)

 /* IPI Destination mode */
 #define IPI_DELMOD_LOGICAL BIT(0)
@@ -64,4 +64,19 @@ typedef enum {
 */
 VOID MdLapicInit(KPCR *Kpcr);

+/*
+ * Send an inter-processor interrupt
+ *
+ * @Vector:         Interrupt vector to assign to ICR
+ * @DestId:         Target APIC ID [depends on @LogicalDest]
+ * @LogicalDest:    If true, IPI destination is logical
+ * @Xnd:            Destination shorthand
+ * @Delmod:         Delivery mode
+ */
+VOID MdLapicSendIpi(
+    UCHAR Vector, UCHAR DestId,
+    BOOLEAN LogicalDest, IPI_SHORTHAND Xnd,
+    IPI_DELMOD DelMod
+);
+
 #endif  /* !_MACHINE_LAPIC_H_ */