#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;
+ info->vm_ops.raise_irq = &v3_raise_irq;
}
void set_intr_controller(struct guest_info * info, struct intr_ctrl_ops * ops, void * state) {
}
+
+// This structure is used to dispatch
+// interrupts delivered to vmm via deliver interrupt to vmm
+// it is what we put into the opaque field given to
+// the host os when we install the handler
+struct vmm_intr_decode {
+ void (*handler)(struct vmm_intr_state *state);
+ // This opaque is user supplied by the caller
+ // of hook_irq_new
+ void *opaque;
+};
+
+int hook_irq_new(uint_t irq,
+ void (*handler)(struct vmm_intr_state *state),
+ void *opaque)
+{
+ extern struct vmm_os_hooks * os_hooks;
+
+ struct vmm_intr_decode *d = V3_Malloc(sizeof(struct vmm_intr_decode));
+
+ if (!d) { return -1; }
+
+ d->handler = handler;
+ d->opaque = opaque;
+
+ if (os_hooks->hook_interrupt_new(irq,d)) {
+ PrintDebug("hook_irq_new: failed to hook irq 0x%x to decode 0x%x\n", irq,d);
+ return -1;
+ } else {
+ PrintDebug("hook_irq_new: hooked irq 0x%x to decode 0x%x\n", irq,d);
+ return 0;
+ }
+}
+
+
+void deliver_interrupt_to_vmm(struct vmm_intr_state *state)
+{
+
+ PrintDebug("deliver_interrupt_to_vmm: state=0x%x\n",state);
+
+ struct vmm_intr_decode *d = (struct vmm_intr_decode *)(state->opaque);
+
+ void *temp = state->opaque;
+ state->opaque = d->opaque;
+
+ d->handler(state);
+
+ state->opaque=temp;
+}
+
+
+void guest_injection_irq_handler(struct vmm_intr_state *state)
+{
+ PrintDebug("guest_irq_injection: state=0x%x\n",state);
+
+ struct guest_info *guest = (struct guest_info *)(state->opaque);
+
+ PrintDebug("guest_irq_injection: injecting irq 0x%x into guest 0x%x\n",state->irq,guest);
+ guest->vm_ops.raise_irq(guest,state->irq);
+}
+
+
+int hook_irq_for_guest_injection(struct guest_info *info, int irq)
+{
+
+ int rc = hook_irq_new(irq,
+ guest_injection_irq_handler,
+ info);
+
+ if (rc) {
+ PrintDebug("guest_irq_injection: failed to hook irq 0x%x for guest 0x%x\n", irq,info);
+ return -1;
+ } else {
+ PrintDebug("guest_irq_injection: hooked irq 0x%x for guest 0x%x\n", irq,info);
+ return 0;
+ }
+}
+
+
+
+
+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);
- /* 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;
+ 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;
}
}
-int raise_irq(struct guest_info * info, int irq, int error_code) {
+int v3_raise_irq(struct guest_info * info, int irq) {
// Look up PIC and resend
V3_ASSERT(info);
V3_ASSERT(info->intr_state.controller);
// 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);
+ 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;
}
-int intr_pending(struct vm_intr * intr) {
- if (intr->excp_pending) {
+
+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->controller->intr_pending(intr->controller_state)) {
+ } else if (intr_state->controller->intr_pending(intr_state->controller_state) == 1) {
return 1;
}
}
-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) + 32;
+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 */
}
-uint_t get_intr_type(struct vm_intr * intr) {
- if (intr->excp_pending) {
+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->controller->intr_pending(intr->controller_state)) {
+ } else if (intr_state->controller->intr_pending(intr_state->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);
+
+
+
+
+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;
}
