--- /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 <palacios/vm_guest_mem.h>
+#include <palacios/vmm.h>
+#include <palacios/vmm_paging.h>
+
+extern struct v3_os_hooks * os_hooks;
+
+
+/**********************************/
+/* GROUP 0 */
+/**********************************/
+
+int host_va_to_host_pa(addr_t host_va, addr_t * host_pa) {
+ if ((os_hooks) && (os_hooks)->vaddr_to_paddr) {
+
+ *host_pa = (addr_t)(os_hooks)->vaddr_to_paddr((void *)host_va);
+
+ if (*host_pa == 0) {
+ PrintError("In HVA->HPA: Invalid HVA(%p)->HPA lookup\n",
+ (void *)host_va);
+ return -1;
+ }
+ } else {
+ PrintError("In HVA->HPA: os_hooks not defined\n");
+ return -1;
+ }
+ return 0;
+}
+
+
+int host_pa_to_host_va(addr_t host_pa, addr_t * host_va) {
+ if ((os_hooks) && (os_hooks)->paddr_to_vaddr) {
+
+ *host_va = (addr_t)(os_hooks)->paddr_to_vaddr((void *)host_pa);
+
+ if (*host_va == 0) {
+ PrintError("In HPA->HVA: Invalid HPA(%p)->HVA lookup\n",
+ (void *)host_pa);
+ return -1;
+ }
+ } else {
+ PrintError("In HPA->HVA: os_hooks not defined\n");
+ return -1;
+ }
+ return 0;
+}
+
+
+
+int guest_pa_to_host_pa(struct guest_info * guest_info, addr_t guest_pa, addr_t * host_pa) {
+ // we use the shadow map here...
+ host_region_type_t reg_type = lookup_shadow_map_addr(&(guest_info->mem_map), guest_pa, host_pa);
+
+ if (reg_type != HOST_REGION_PHYSICAL_MEMORY) {
+ PrintError("In GPA->HPA: Could not find address in shadow map (addr=%p) (reg_type=%d)\n",
+ (void *)guest_pa, reg_type);
+ return -1;
+ }
+
+ return 0;
+}
+
+
+/* !! Currently not implemented !! */
+// This is a scan of the shadow map
+// For now we ignore it
+//
+int host_pa_to_guest_pa(struct guest_info * guest_info, addr_t host_pa, addr_t * guest_pa) {
+ *guest_pa = 0;
+ PrintError("ERROR!!! HPA->GPA currently not implemented!!!\n");
+
+ return -1;
+}
+
+
+
+/**********************************/
+/* GROUP 1 */
+/**********************************/
+
+
+/* !! Currently not implemented !! */
+// This will return negative until we implement host_pa_to_guest_pa()
+int host_va_to_guest_pa(struct guest_info * guest_info, addr_t host_va, addr_t * guest_pa) {
+ addr_t host_pa = 0;
+ *guest_pa = 0;
+
+ if (host_va_to_host_pa(host_va, &host_pa) != 0) {
+ PrintError("In HVA->GPA: Invalid HVA(%p)->HPA lookup\n",
+ (void *)host_va);
+ return -1;
+ }
+
+ if (host_pa_to_guest_pa(guest_info, host_pa, guest_pa) != 0) {
+ PrintError("In HVA->GPA: Invalid HPA(%p)->GPA lookup\n",
+ (void *)host_pa);
+ return -1;
+ }
+
+ return 0;
+}
+
+
+
+
+int guest_pa_to_host_va(struct guest_info * guest_info, addr_t guest_pa, addr_t * host_va) {
+ addr_t host_pa = 0;
+
+ *host_va = 0;
+
+ if (guest_pa_to_host_pa(guest_info, guest_pa, &host_pa) != 0) {
+ PrintError("In GPA->HVA: Invalid GPA(%p)->HPA lookup\n",
+ (void *)guest_pa);
+ return -1;
+ }
+
+ if (host_pa_to_host_va(host_pa, host_va) != 0) {
+ PrintError("In GPA->HVA: Invalid HPA(%p)->HVA lookup\n",
+ (void *)host_pa);
+ return -1;
+ }
+
+ return 0;
+}
+
+
+int guest_va_to_guest_pa(struct guest_info * guest_info, addr_t guest_va, addr_t * guest_pa) {
+ if (guest_info->mem_mode == PHYSICAL_MEM) {
+ // guest virtual address is the same as the physical
+ *guest_pa = guest_va;
+ return 0;
+ }
+
+
+
+ // Guest Is in Paged mode
+ switch (guest_info->cpu_mode) {
+ case PROTECTED:
+ {
+ addr_t tmp_pa = 0;
+ pde32_t * pde = 0;
+ addr_t guest_pde = 0;
+
+ if (guest_info->shdw_pg_mode == SHADOW_PAGING) {
+ guest_pde = (addr_t)V3_PAddr((void *)(addr_t)CR3_TO_PDE32((void *)(addr_t)(guest_info->shdw_pg_state.guest_cr3)));
+ } else if (guest_info->shdw_pg_mode == NESTED_PAGING) {
+ guest_pde = (addr_t)V3_PAddr((void *)(addr_t)CR3_TO_PDE32((void *)(addr_t)(guest_info->ctrl_regs.cr3)));
+ }
+
+ if (guest_pa_to_host_va(guest_info, guest_pde, (addr_t *)&pde) == -1) {
+ PrintError("In GVA->GPA: Invalid GPA(%p)->HVA PDE32 lookup\n",
+ (void *)guest_pde);
+ return -1;
+ }
+
+
+ switch (pde32_lookup(pde, guest_va, &tmp_pa)) {
+ case PDE32_ENTRY_NOT_PRESENT:
+ *guest_pa = 0;
+ return -1;
+ case PDE32_ENTRY_LARGE_PAGE:
+ *guest_pa = tmp_pa;
+ return 0;
+ case PDE32_ENTRY_PTE32:
+ {
+ pte32_t * pte = 0;
+
+
+ if (guest_pa_to_host_va(guest_info, tmp_pa, (addr_t*)&pte) == -1) {
+ PrintError("In GVA->GPA: Invalid GPA(%p)->HVA PTE32 lookup\n",
+ (void *)guest_pa);
+ return -1;
+ }
+
+ //PrintDebug("PTE host addr=%x, GVA=%x, GPA=%x(should be 0)\n", pte, guest_va, *guest_pa);
+
+ if (pte32_lookup(pte, guest_va, guest_pa) != 0) {
+ PrintError("In GVA->GPA: PTE32 Lookup failure GVA=%p; PTE=%p\n",
+ (void *)guest_va, (void *)pte);
+ // PrintPT32(PDE32_INDEX(guest_va) << 22, pte);
+ return -1;
+ }
+
+ return 0;
+ }
+ default:
+ return -1;
+ }
+ }
+ case PROTECTED_PAE:
+ {
+ // Fill in
+ }
+ case LONG:
+ {
+ // Fill in
+ }
+ default:
+ return -1;
+ }
+
+
+
+ return 0;
+}
+
+
+
+/* !! Currently not implemented !! */
+/* This will be a real pain.... its your standard page table walker in guest memory
+ *
+ * For now we ignore it...
+ */
+int guest_pa_to_guest_va(struct guest_info * guest_info, addr_t guest_pa, addr_t * guest_va) {
+ *guest_va = 0;
+ PrintError("ERROR!!: GPA->GVA Not Implemented!!\n");
+ return -1;
+}
+
+
+/**********************************/
+/* GROUP 2 */
+/**********************************/
+
+
+int guest_va_to_host_pa(struct guest_info * guest_info, addr_t guest_va, addr_t * host_pa) {
+ addr_t guest_pa = 0;
+
+ *host_pa = 0;
+
+ if (guest_va_to_guest_pa(guest_info, guest_va, &guest_pa) != 0) {
+ PrintError("In GVA->HPA: Invalid GVA(%p)->GPA lookup\n",
+ (void *)guest_va);
+ return -1;
+ }
+
+ if (guest_pa_to_host_pa(guest_info, guest_pa, host_pa) != 0) {
+ PrintError("In GVA->HPA: Invalid GPA(%p)->HPA lookup\n",
+ (void *)guest_pa);
+ return -1;
+ }
+
+ return 0;
+}
+
+/* !! Currently not implemented !! */
+int host_pa_to_guest_va(struct guest_info * guest_info, addr_t host_pa, addr_t * guest_va) {
+ addr_t guest_pa = 0;
+
+ *guest_va = 0;
+
+ if (host_pa_to_guest_pa(guest_info, host_pa, &guest_pa) != 0) {
+ PrintError("In HPA->GVA: Invalid HPA(%p)->GPA lookup\n",
+ (void *)host_pa);
+ return -1;
+ }
+
+ if (guest_pa_to_guest_va(guest_info, guest_pa, guest_va) != 0) {
+ PrintError("In HPA->GVA: Invalid GPA(%p)->GVA lookup\n",
+ (void *)guest_pa);
+ return -1;
+ }
+
+ return 0;
+}
+
+
+
+
+int guest_va_to_host_va(struct guest_info * guest_info, addr_t guest_va, addr_t * host_va) {
+ addr_t guest_pa = 0;
+ addr_t host_pa = 0;
+
+ *host_va = 0;
+
+ if (guest_va_to_guest_pa(guest_info, guest_va, &guest_pa) != 0) {
+ PrintError("In GVA->HVA: Invalid GVA(%p)->GPA lookup\n",
+ (void *)guest_va);
+ return -1;
+ }
+
+ if (guest_pa_to_host_pa(guest_info, guest_pa, &host_pa) != 0) {
+ PrintError("In GVA->HVA: Invalid GPA(%p)->HPA lookup\n",
+ (void *)guest_pa);
+ return -1;
+ }
+
+ if (host_pa_to_host_va(host_pa, host_va) != 0) {
+ PrintError("In GVA->HVA: Invalid HPA(%p)->HVA lookup\n",
+ (void *)host_pa);
+ return -1;
+ }
+
+ return 0;
+}
+
+
+/* !! Currently not implemented !! */
+int host_va_to_guest_va(struct guest_info * guest_info, addr_t host_va, addr_t * guest_va) {
+ addr_t host_pa = 0;
+ addr_t guest_pa = 0;
+
+ *guest_va = 0;
+
+ if (host_va_to_host_pa(host_va, &host_pa) != 0) {
+ PrintError("In HVA->GVA: Invalid HVA(%p)->HPA lookup\n",
+ (void *)host_va);
+ return -1;
+ }
+
+ if (host_pa_to_guest_pa(guest_info, host_pa, &guest_pa) != 0) {
+ PrintError("In HVA->GVA: Invalid HPA(%p)->GPA lookup\n",
+ (void *)host_va);
+ return -1;
+ }
+
+ if (guest_pa_to_guest_va(guest_info, guest_pa, guest_va) != 0) {
+ PrintError("In HVA->GVA: Invalid GPA(%p)->GVA lookup\n",
+ (void *)guest_pa);
+ return -1;
+ }
+
+ return 0;
+}
+
+
+
+
+
+
+/* This is a straight address conversion + copy,
+ * except for the tiny little issue of crossing page boundries.....
+ */
+int read_guest_va_memory(struct guest_info * guest_info, addr_t guest_va, int count, uchar_t * dest) {
+ addr_t cursor = guest_va;
+ int bytes_read = 0;
+
+
+
+ while (count > 0) {
+ int dist_to_pg_edge = (PAGE_ADDR(cursor) + PAGE_SIZE) - cursor;
+ int bytes_to_copy = (dist_to_pg_edge > count) ? count : dist_to_pg_edge;
+ addr_t host_addr = 0;
+
+
+ if (guest_va_to_host_va(guest_info, cursor, &host_addr) != 0) {
+ PrintDebug("Invalid GVA(%p)->HVA lookup\n", (void *)cursor);
+ return bytes_read;
+ }
+
+
+
+ memcpy(dest + bytes_read, (void*)host_addr, bytes_to_copy);
+
+ bytes_read += bytes_to_copy;
+ count -= bytes_to_copy;
+ cursor += bytes_to_copy;
+ }
+
+ return bytes_read;
+}
+
+
+
+
+
+
+/* This is a straight address conversion + copy,
+ * except for the tiny little issue of crossing page boundries.....
+ */
+int read_guest_pa_memory(struct guest_info * guest_info, addr_t guest_pa, int count, uchar_t * dest) {
+ addr_t cursor = guest_pa;
+ int bytes_read = 0;
+
+ while (count > 0) {
+ int dist_to_pg_edge = (PAGE_ADDR(cursor) + PAGE_SIZE) - cursor;
+ int bytes_to_copy = (dist_to_pg_edge > count) ? count : dist_to_pg_edge;
+ addr_t host_addr = 0;
+
+ if (guest_pa_to_host_va(guest_info, cursor, &host_addr) != 0) {
+ return bytes_read;
+ }
+
+ /*
+ PrintDebug("Trying to read %d bytes\n", bytes_to_copy);
+ PrintDebug("Dist to page edge=%d\n", dist_to_pg_edge);
+ PrintDebug("PAGE_ADDR=0x%x\n", PAGE_ADDR(cursor));
+ PrintDebug("guest_pa=0x%x\n", guest_pa);
+ */
+
+ memcpy(dest + bytes_read, (void*)host_addr, bytes_to_copy);
+
+ bytes_read += bytes_to_copy;
+ count -= bytes_to_copy;
+ cursor += bytes_to_copy;
+ }
+
+ return bytes_read;
+}
+
+
+
+
+/* This is a straight address conversion + copy,
+ * except for the tiny little issue of crossing page boundries.....
+ */
+int write_guest_pa_memory(struct guest_info * guest_info, addr_t guest_pa, int count, uchar_t * src) {
+ addr_t cursor = guest_pa;
+ int bytes_written = 0;
+
+ while (count > 0) {
+ int dist_to_pg_edge = (PAGE_ADDR(cursor) + PAGE_SIZE) - cursor;
+ int bytes_to_copy = (dist_to_pg_edge > count) ? count : dist_to_pg_edge;
+ addr_t host_addr;
+
+ if (guest_pa_to_host_va(guest_info, cursor, &host_addr) != 0) {
+ return bytes_written;
+ }
+
+
+ memcpy((void*)host_addr, src + bytes_written, bytes_to_copy);
+
+ bytes_written += bytes_to_copy;
+ count -= bytes_to_copy;
+ cursor += bytes_to_copy;
+ }
+
+ return bytes_written;
+}
+
