-#include <geekos/vm_guest_mem.c>
-
+#include <geekos/vm_guest_mem.h>
+#include <geekos/vmm.h>
#include <geekos/vmm_paging.h>
extern struct vmm_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) {
+ return -1;
+ }
+ } else {
+ 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) {
+ return -1;
+ }
+ } else {
+ 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...
+ if (lookup_shadow_map_addr(&(guest_info->mem_map), guest_pa, host_pa) != HOST_REGION_PHYSICAL_MEMORY) {
+ 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;
+
+ 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;
+ *guest_pa = 0;
+
+ if (host_va_to_host_pa(host_va, &host_pa) != 0) {
+ return -1;
+ }
+
+ if (host_pa_to_guest_pa(guest_info, host_pa, guest_pa) != 0) {
+ 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;
+
+ *host_va = 0;
+
+ if (guest_pa_to_host_pa(guest_info, guest_pa, &host_pa) != 0) {
+ return -1;
+ }
+
+ if (host_pa_to_host_va(host_pa, host_va) != 0) {
+ return -1;
+ }
+
+ return 0;
+}
-int guest_va_to_guest_pa(guest_info_t * guest_info, addr_t guest_va, addr_t * guest_pa) {
+
+int guest_va_to_guest_pa(struct guest_info * guest_info, addr_t guest_va, addr_t * guest_pa) {
if (guest_info->page_mode == SHADOW_PAGING) {
switch (guest_info->cpu_mode) {
case REAL:
{
addr_t tmp_pa;
pde32_t * pde;
- addr_t guest_pde = CR3_TO_PDE32(guest_info->shadow_page_state.guest_cr3);
+ addr_t guest_pde = CR3_TO_PDE32(guest_info->shdw_pg_state.guest_cr3.r_reg);
if (guest_pa_to_host_va(guest_info, guest_pde, (addr_t *)&pde) == -1) {
return -1;
switch (pde32_lookup(pde, guest_va, &tmp_pa)) {
case NOT_PRESENT:
- *guest_page = 0;
+ *guest_pa = 0;
return -1;
case LARGE_PAGE:
*guest_pa = tmp_pa;
return -1;
}
- return 0;
+ return 0;
}
default:
return -1;
+/* !! 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;
+ return -1;
+}
+/**********************************/
+/* GROUP 2 */
+/**********************************/
-int guest_pa_to_host_va(guest_info_t * guest_info, addr_t guest_pa, addr_t * host_va) {
- addr_t host_pa;
+int guest_va_to_host_pa(struct guest_info * guest_info, addr_t guest_va, addr_t * host_pa) {
+ addr_t guest_pa;
- if (guest_pa_to_host_pa(guest_info, guest_pa, &host_pa) != 0) {
+ *host_pa = 0;
+
+ if (guest_va_to_guest_pa(guest_info, guest_va, &guest_pa) != 0) {
return -1;
}
- if (host_pa_to_host_va(host_pa, host_va) != 0) {
+ if (guest_pa_to_host_pa(guest_info, guest_pa, host_pa) != 0) {
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;
-int guest_pa_to_host_pa(guest_info_t * guest_info, addr_t guest_pa, addr_t * host_pa) {
- // we use the shadow map here...
- if (lookup_shadow_map_addr(guest_info->shadow_map, guest_pa, host_pa) != HOST_REGION_PHYSICAL_MEMORY) {
+ *guest_va = 0;
+
+ if (host_pa_to_guest_pa(guest_info, host_pa, &guest_pa) != 0) {
return -1;
}
-
+
+ if (guest_pa_to_guest_va(guest_info, guest_pa, guest_va) != 0) {
+ return -1;
+ }
+
return 0;
}
-int host_va_to_host_pa(addr_t host_va, addr_t * host_pa) {
- *host_pa = os_hooks->vaddr_to_paddr(host_va);
-
- if (*host_pa == 0) {
+int guest_va_to_host_va(struct guest_info * guest_info, addr_t guest_va, addr_t * host_va) {
+ addr_t guest_pa;
+ addr_t host_pa;
+
+ *host_va = 0;
+
+ if (guest_va_to_guest_pa(guest_info, guest_va, &guest_pa) != 0) {
+ return -1;
+ }
+
+ if (guest_pa_to_host_pa(guest_info, guest_pa, &host_pa) != 0) {
+ return -1;
+ }
+
+ if (host_pa_to_host_va(host_pa, host_va) != 0) {
return -1;
}
}
-int host_pa_to_host_va(addr_t host_pa, addr_t * host_va) {
- *host_va = os_hooks->paddr_to_vaddr(host_pa);
+/* !! 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;
+ addr_t guest_pa;
+
+ *guest_va = 0;
+
+ if (host_va_to_host_pa(host_va, &host_pa) != 0) {
+ return -1;
+ }
+
+ if (host_pa_to_guest_pa(guest_info, host_pa, &guest_pa) != 0) {
+ return -1;
+ }
- if (*host_va == 0) {
+ if (guest_pa_to_guest_va(guest_info, guest_pa, guest_va) != 0) {
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, char * dest) {
+ addr_t cursor = guest_va;
+
+ while (count > 0) {
+ int dist_to_pg_edge = (PAGE_OFFSET(cursor) + PAGE_SIZE) - cursor;
+ int bytes_to_copy = (dist_to_pg_edge > count) ? count : dist_to_pg_edge;
+ addr_t host_addr;
+
+ if (guest_va_to_host_va(guest_info, cursor, &host_addr) != 0) {
+ return -1;
+ }
+
+ memcpy(dest, (void*)cursor, bytes_to_copy);
+
+ count -= bytes_to_copy;
+ cursor += bytes_to_copy;
+ }
+
+ return 0;
+}
+
+
+
+
+
+
+/* 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, char * dest) {
+ addr_t cursor = guest_pa;
+
+ while (count > 0) {
+ int dist_to_pg_edge = (PAGE_OFFSET(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 -1;
+ }
+
+ memcpy(dest, (void*)cursor, bytes_to_copy);
+
+ count -= bytes_to_copy;
+ cursor += bytes_to_copy;
+ }
+
+ return 0;
+}
+
