Implement API to inject virtual interrupts into VMs.
This doesn't yet work properly in multiple-PE configurations, and doesn't have
any concept of priorities.
Bug: 117270899
Change-Id: Id62c59d78d0604b934aeca75ea459248db660488
diff --git a/inc/hf/cpu.h b/inc/hf/cpu.h
index 60261fe..d2029dd 100644
--- a/inc/hf/cpu.h
+++ b/inc/hf/cpu.h
@@ -25,6 +25,11 @@
#include "hf/addr.h"
#include "hf/spinlock.h"
+#include "vmapi/hf/types.h"
+
+/** The number of bits in each element of the interrupt bitfields. */
+#define INTERRUPT_REGISTER_BITS 32
+
enum vcpu_state {
/** The vcpu is switched off. */
vcpu_state_off,
@@ -42,6 +47,13 @@
vcpu_state_blocked_interrupt,
};
+struct interrupts {
+ /** Bitfield keeping track of which interrupts are enabled. */
+ uint32_t interrupt_enabled[HF_NUM_INTIDS / INTERRUPT_REGISTER_BITS];
+ /** Bitfield keeping track of which interrupts are pending. */
+ uint32_t interrupt_pending[HF_NUM_INTIDS / INTERRUPT_REGISTER_BITS];
+};
+
struct vcpu {
struct spinlock lock;
enum vcpu_state state;
@@ -49,6 +61,7 @@
struct vm *vm;
struct vcpu *mailbox_next;
struct arch_regs regs;
+ struct interrupts interrupts;
};
/* TODO: Update alignment such that cpus are in different cache lines. */