X-Git-Url: http://v3vee.org/palacios/gitweb/gitweb.cgi?a=blobdiff_plain;f=palacios%2Fsrc%2Fpalacios%2Fvmm_intr.c;h=dd36143119a009fb5d5a111d483946bbf41a9106;hb=86c6fd174a293cdea69e4592e2eace691949043c;hp=c15d68c68115bc04b6488a3732f904dc69544c65;hpb=1cf6b8a334fd683681665c177d33ad6c452ad366;p=palacios.git

diff --git a/palacios/src/palacios/vmm_intr.c b/palacios/src/palacios/vmm_intr.c
index c15d68c..dd36143 100644
--- a/palacios/src/palacios/vmm_intr.c
+++ b/palacios/src/palacios/vmm_intr.c
@@ -1,4 +1,94 @@
 #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 = &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 raise_exception(struct guest_info * info, uint_t excp) {
+
+  /* We can't stack exceptions, 
+     but do we need to have some sort of priority?
+  */
+  if (info->intr_state.excp_pending) {
+    info->intr_state.excp_pending = 1;
+    info->intr_state.excp_num = excp;
+  } else {
+    return -1;
+  }
+
+  return 0;
+}
+
+
+int raise_irq(struct guest_info * info, int irq, int error_code) {
+  // 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, error_code);
+    //} else {
+    // PrintDebug("There is no registered Interrupt Controller... (NULL POINTER)\n");
+    // return -1;
+    //}
+  return 0;
+}
+
+
+int intr_pending(struct vm_intr * intr) {
+  if (intr->excp_pending) {
+    return 1;
+  } else if (intr->controller->intr_pending(intr->controller_state)) {
+    return 1;
+  }
+
+  /* Check [A]PIC */
+
+  return 0;
+}
+
+
+uint_t get_intr_number(struct vm_intr * intr) {
+  if (intr->excp_pending) {
+    return intr->excp_num;
+  } else if (intr->controller->intr_pending(intr->controller_state)) {
+    return intr->controller->get_intr_number(intr->controller_state);
+  }
+
+  /* someway to get the [A]PIC intr */
+
+  return 0;
+}
+
+
+uint_t get_intr_type(struct vm_intr * intr) {
+  if (intr->excp_pending) {
+    return EXCEPTION;
+  } else if (intr->controller->intr_pending(intr->controller_state)) {
+    return EXTERNAL_IRQ;
+  }
+
+  return INVALID_INTR;
+}
+
+int hook_irq(struct guest_info * info, int irq) {
+  extern struct vmm_os_hooks * os_hooks;
+
+  return os_hooks->hook_interrupt(info, irq);
+}