#include <palacios/vmm_intr.h>
+#include <palacios/vmm.h>
+#include <palacios/vm_guest.h>
+void init_interrupt_state(struct guest_info * info) {
+ info->intr_state.excp_pending = 0;
+ info->intr_state.excp_num = 0;
+ info->intr_state.excp_error_code = 0;
+
+ info->vm_ops.raise_irq = &v3_raise_irq;
+}
+
+void set_intr_controller(struct guest_info * info, struct intr_ctrl_ops * ops, void * state) {
+ info->intr_state.controller = ops;
+ info->intr_state.controller_state = state;
+}
+
+
+
+
+
+
+
+
+
+int hook_irq(struct guest_info * info, int irq) {
+ extern struct vmm_os_hooks * os_hooks;
+
+ return os_hooks->hook_interrupt(info, irq);
+}
+
+int raise_exception_with_error(struct guest_info * info, uint_t excp, uint_t error_code) {
+ struct vm_intr * intr_state = &(info->intr_state);
+
+ if (intr_state->excp_pending == 0) {
+ intr_state->excp_pending = 1;
+ intr_state->excp_num = excp;
+ intr_state->excp_error_code = error_code;
+ intr_state->excp_error_code_valid = 1;
+ PrintDebug("Raising exception with error code: %x\n", error_code);
+ } else {
+ PrintDebug("exception already pending, currently not implemented\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+int raise_exception(struct guest_info * info, uint_t excp) {
+ struct vm_intr * intr_state = &(info->intr_state);
+
+ if (intr_state->excp_pending == 0) {
+ intr_state->excp_pending = 1;
+ intr_state->excp_num = excp;
+ intr_state->excp_error_code = 0;
+ intr_state->excp_error_code_valid = 0;
+ } else {
+ PrintDebug("exception already pending, currently not implemented\n");
+ return -1;
+ }
+
+ return 0;
+}
+
+
+int v3_raise_irq(struct guest_info * info, int irq) {
+ // Look up PIC and resend
+ V3_ASSERT(info);
+ V3_ASSERT(info->intr_state.controller);
+ V3_ASSERT(info->intr_state.controller->raise_intr);
+
+ // if ((info->intr_state.controller) &&
+ // (info->intr_state.controller->raise_intr)) {
+ info->intr_state.controller->raise_intr(info->intr_state.controller_state, irq);
+ //} else {
+ // PrintDebug("There is no registered Interrupt Controller... (NULL POINTER)\n");
+ // return -1;
+ //}
+ return 0;
+}
+
+
+
+
+
+
+
+
+
+
+
+int intr_pending(struct guest_info * info) {
+ struct vm_intr * intr_state = &(info->intr_state);
+
+ if (intr_state->excp_pending == 1) {
+ return 1;
+ } else if (intr_state->controller->intr_pending(intr_state->controller_state) == 1) {
+ return 1;
+ }
+
+ /* Check [A]PIC */
+
+ return 0;
+}
+
+
+uint_t get_intr_number(struct guest_info * info) {
+ struct vm_intr * intr_state = &(info->intr_state);
+
+ if (intr_state->excp_pending == 1) {
+ return intr_state->excp_num;
+ } else if (intr_state->controller->intr_pending(intr_state->controller_state)) {
+ return intr_state->controller->get_intr_number(intr_state->controller_state);
+ }
+
+ /* someway to get the [A]PIC intr */
+
+ return 0;
+}
+
+
+intr_type_t get_intr_type(struct guest_info * info) {
+ struct vm_intr * intr_state = &(info->intr_state);
+
+ if (intr_state->excp_pending) {
+ return EXCEPTION;
+ } else if (intr_state->controller->intr_pending(intr_state->controller_state)) {
+ return EXTERNAL_IRQ;
+ }
+
+ return INVALID_INTR;
+}
+
+
+
+
+
+
+int injecting_intr(struct guest_info * info, uint_t intr_num, intr_type_t type) {
+ struct vm_intr * intr_state = &(info->intr_state);
+
+ if (type == EXCEPTION) {
+
+ intr_state->excp_pending = 0;
+ intr_state->excp_num = 0;
+ intr_state->excp_error_code = 0;
+ intr_state->excp_error_code_valid = 0;
+
+ } else if (type == EXTERNAL_IRQ) {
+ return intr_state->controller->begin_irq(intr_state->controller_state, intr_num);
+ }
+
+ return 0;
+}
