--- /dev/null
+/*
+ * This file is part of the Palacios Virtual Machine Monitor developed
+ * by the V3VEE Project with funding from the United States National
+ * Science Foundation and the Department of Energy.
+ *
+ * The V3VEE Project is a joint project between Northwestern University
+ * and the University of New Mexico. You can find out more at
+ * http://www.v3vee.org
+ *
+ * Copyright (c) 2008, Jack Lange <jarusl@cs.northwestern.edu>
+ * Copyright (c) 2008, The V3VEE Project <http://www.v3vee.org>
+ * All rights reserved.
+ *
+ * Author: Jack Lange <jarusl@cs.northwestern.edu>
+ *
+ * This is free software. You are permitted to use,
+ * redistribute, and modify it as specified in the file "V3VEE_LICENSE".
+ */
+
+#include <geekos/vmm_stubs.h>
+#include <geekos/serial.h>
+#include <geekos/debug.h>
+#include <palacios/vmm.h>
+#include <palacios/vmm_host_events.h>
+
+
+struct guest_info * g_vm_guest = NULL;
+
+
+// This is the function the interface code should call to deliver
+// the interrupt to the vmm for handling
+//extern int v3_deliver_interrupt(struct guest_info * vm, struct v3_interrupt *intr);
+
+
+struct guest_info * irq_to_guest_map[256];
+
+
+
+
+static inline void VM_Out_Byte(ushort_t port, uchar_t value)
+{
+ __asm__ __volatile__ (
+ "outb %b0, %w1"
+ :
+ : "a" (value), "Nd" (port)
+ );
+}
+
+/*
+ * Read a byte from an I/O port.
+ */
+static inline uchar_t VM_In_Byte(ushort_t port)
+{
+ uchar_t value;
+
+ __asm__ __volatile__ (
+ "inb %w1, %b0"
+ : "=a" (value)
+ : "Nd" (port)
+ );
+
+ return value;
+}
+
+
+
+void Init_Stubs(struct guest_info * info) {
+ memset(irq_to_guest_map, 0, sizeof(struct guest_info *) * 256);
+ g_vm_guest = info;
+}
+
+
+
+void * Identity(void *addr) { return addr; };
+
+void * Allocate_VMM_Pages(int num_pages) {
+ void * start_page = Alloc_Page();
+ //SerialPrint("Starting by Allocating Page: %x (%d of %d)\n",start_page, 1, num_pages);
+ int i = 1;
+
+ while (i < num_pages) {
+ void * tmp_page = Alloc_Page();
+ //SerialPrint("Allocating Page: %x (%d of %d)\n",tmp_page, i+1, num_pages);
+
+ if (tmp_page != start_page + (PAGE_SIZE * i)) {
+ //we have to start over...;
+ while (i >= 0) {
+ Free_Page(start_page + (PAGE_SIZE * i));
+ i--;
+ }
+ start_page = Alloc_Page();
+ //SerialPrint("Starting over by Allocating Page: %x (%d of %d)\n",start_page, 1, num_pages);
+ i = 1;
+ continue;
+ }
+ i++;
+ }
+
+ return start_page;
+}
+
+void Free_VMM_Page(void * page) {
+ Free_Page(page);
+}
+
+
+void * VMM_Malloc(unsigned int size) {
+ return Malloc((unsigned long) size);
+}
+
+
+void VMM_Free(void * addr) {
+ Free(addr);
+}
+
+
+
+void send_key_to_vmm(unsigned char status, unsigned char scancode) {
+ struct v3_keyboard_event evt;
+
+ evt.status = status;
+ evt.scan_code = scancode;
+
+ if (g_vm_guest) {
+ v3_deliver_keyboard_event(g_vm_guest, &evt);
+ }
+}
+
+
+void send_mouse_to_vmm(unsigned char packet[3]) {
+ struct v3_mouse_event evt;
+
+ memcpy(evt.data, packet, 3);
+
+ if (g_vm_guest) {
+ v3_deliver_mouse_event(g_vm_guest, &evt);
+ }
+}
+
+void send_tick_to_vmm(unsigned int period_us) {
+ struct v3_timer_event evt;
+
+ evt.period_us = period_us;
+
+ if (g_vm_guest) {
+ v3_deliver_timer_event(g_vm_guest, &evt);
+ }
+}
+
+
+void translate_intr_handler(struct Interrupt_State *state) {
+ struct v3_interrupt intr;
+
+ intr.irq = state->intNum - 32;
+ intr.error = state->errorCode;
+ intr.should_ack = 0;
+
+ // PrintBoth("translate_intr_handler: opaque=0x%x\n",mystate.opaque);
+
+ v3_deliver_irq(irq_to_guest_map[intr.irq], &intr);
+
+ End_IRQ(state);
+
+}
+
+
+
+int geekos_hook_interrupt(struct guest_info * vm, unsigned int irq)
+{
+ if (irq_to_guest_map[irq]) {
+ PrintBoth("Attempt to hook interrupt that is already hooked\n");
+ return -1;
+ } else {
+ PrintBoth("Hooked interrupt 0x%x with opaque 0x%x\n", irq, vm);
+ irq_to_guest_map[irq] = vm;
+ }
+
+ Disable_IRQ(irq);
+ Install_IRQ(irq, translate_intr_handler);
+ Enable_IRQ(irq);
+ return 0;
+}
+
+
+int ack_irq(int irq) {
+ End_IRQ_num(irq);
+ return 0;
+}
+
+
+
+
+unsigned int get_cpu_khz() {
+ extern uint_t cpu_khz_freq;
+
+ unsigned long print_khz = (unsigned long)(cpu_khz_freq & 0xffffffff);
+
+ PrintBoth("Detected %lu.%lu MHz CPU\n", print_khz / 1000, print_khz % 1000);
+
+ return cpu_khz_freq;
+}
+
+
