+/*
+ * 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/vmm_io.h>
#include <palacios/vmm_string.h>
#include <palacios/vmm.h>
+#include <palacios/vm_guest.h>
-
-#ifndef DEBUG_IO
+#ifndef V3_CONFIG_DEBUG_IO
#undef PrintDebug
#define PrintDebug(fmt, args...)
#endif
+static int free_hook(struct v3_vm_info * vm, struct v3_io_hook * hook);
+
+static int default_write(struct guest_info * core, uint16_t port, void *src, uint_t length, void * priv_data);
+static int default_read(struct guest_info * core, uint16_t port, void * dst, uint_t length, void * priv_data);
+
+
+void v3_init_io_map(struct v3_vm_info * vm) {
+
+ vm->io_map.map.rb_node = NULL;
+ vm->io_map.arch_data = NULL;
+ vm->io_map.update_map = NULL;
-void init_vmm_io_map(vmm_io_map_t * io_map) {
- io_map->num_ports = 0;
- io_map->head = NULL;
}
+int v3_deinit_io_map(struct v3_vm_info * vm) {
+ struct rb_node * node = v3_rb_first(&(vm->io_map.map));
+ struct v3_io_hook * hook = NULL;
+ struct rb_node * tmp_node = NULL;
+ while (node) {
+ hook = rb_entry(node, struct v3_io_hook, tree_node);
+ tmp_node = node;
+ node = v3_rb_next(node);
-int add_io_hook(vmm_io_map_t * io_map, vmm_io_hook_t * io_hook) {
+ free_hook(vm, hook);
+ }
- if (!(io_map->head)) {
- io_map->head = io_hook;
- io_map->num_ports = 1;
return 0;
- } else if (io_map->head->port > io_hook->port) {
- io_hook->next = io_map->head;
+}
- io_map->head->prev = io_hook;
- io_map->head = io_hook;
- io_map->num_ports++;
- return 0;
- } else {
- vmm_io_hook_t * tmp_hook = io_map->head;
-
- while ((tmp_hook->next) &&
- (tmp_hook->next->port <= io_hook->port)) {
- tmp_hook = tmp_hook->next;
- }
-
- if (tmp_hook->port == io_hook->port) {
- //tmp_hook->read = io_hook->read;
- //tmp_hook->write = io_hook->write;
- //V3_Free(io_hook);
- return -1;
- } else {
- io_hook->prev = tmp_hook;
- io_hook->next = tmp_hook->next;
- if (tmp_hook->next) {
- tmp_hook->next->prev = io_hook;
- }
- tmp_hook->next = io_hook;
+static inline struct v3_io_hook * __insert_io_hook(struct v3_vm_info * vm, struct v3_io_hook * hook) {
+ struct rb_node ** p = &(vm->io_map.map.rb_node);
+ struct rb_node * parent = NULL;
+ struct v3_io_hook * tmp_hook = NULL;
+
+ while (*p) {
+ parent = *p;
+ tmp_hook = rb_entry(parent, struct v3_io_hook, tree_node);
- io_map->num_ports++;
- return 0;
+ if (hook->port < tmp_hook->port) {
+ p = &(*p)->rb_left;
+ } else if (hook->port > tmp_hook->port) {
+ p = &(*p)->rb_right;
+ } else {
+ return tmp_hook;
}
}
- return -1;
+
+ rb_link_node(&(hook->tree_node), parent, p);
+
+ return NULL;
}
-int remove_io_hook(vmm_io_map_t * io_map, vmm_io_hook_t * io_hook) {
- if (io_map->head == io_hook) {
- io_map->head = io_hook->next;
- } else if (io_hook->prev) {
- io_hook->prev->next = io_hook->next;
- } else {
- return -1;
- // data corruption failure
- }
-
- if (io_hook->next) {
- io_hook->next->prev = io_hook->prev;
+
+static inline struct v3_io_hook * insert_io_hook(struct v3_vm_info * vm, struct v3_io_hook * hook) {
+ struct v3_io_hook * ret;
+
+ if ((ret = __insert_io_hook(vm, hook))) {
+ return ret;
}
- io_map->num_ports--;
+ v3_rb_insert_color(&(hook->tree_node), &(vm->io_map.map));
- return 0;
+ return NULL;
}
+struct v3_io_hook * v3_get_io_hook(struct v3_vm_info * vm, uint16_t port) {
+ struct rb_node * n = vm->io_map.map.rb_node;
+ struct v3_io_hook * hook = NULL;
-/* FIX ME */
-static int default_write(ushort_t port, void *src, uint_t length, void * priv_data) {
- /*
+ while (n) {
+ hook = rb_entry(n, struct v3_io_hook, tree_node);
- if (length == 1) {
- __asm__ __volatile__ (
- "outb %b0, %w1"
- :
- : "a" (*dst), "Nd" (port)
- );
- } else if (length == 2) {
- __asm__ __volatile__ (
- "outw %b0, %w1"
- :
- : "a" (*dst), "Nd" (port)
- );
- } else if (length == 4) {
- __asm__ __volatile__ (
- "outw %b0, %w1"
- :
- : "a" (*dst), "Nd" (port)
- );
+ if (port < hook->port) {
+ n = n->rb_left;
+ } else if (port > hook->port) {
+ n = n->rb_right;
+ } else {
+ return hook;
+ }
}
- */
- return 0;
+
+ return NULL;
}
-static int default_read(ushort_t port, void * dst, uint_t length, void * priv_data)
-{
- /*
- uchar_t value;
- __asm__ __volatile__ (
- "inb %w1, %b0"
- : "=a" (value)
- : "Nd" (port)
- );
- return value;
- */
- return 0;
-}
+int v3_hook_io_port(struct v3_vm_info * vm, uint16_t port,
+ int (*read)(struct guest_info * core, uint16_t port, void * dst, uint_t length, void * priv_data),
+ int (*write)(struct guest_info * core, uint16_t port, void * src, uint_t length, void * priv_data),
+ void * priv_data) {
+ struct v3_io_hook * io_hook = (struct v3_io_hook *)V3_Malloc(sizeof(struct v3_io_hook));
+
+ if (!io_hook) {
+ PrintError(vm, VCORE_NONE, "Cannot allocate in hooking an I/O port\n");
+ return -1;
+ }
-int hook_io_port(vmm_io_map_t * io_map, uint_t port,
- int (*read)(ushort_t port, void * dst, uint_t length, void * priv_data),
- int (*write)(ushort_t port, void * src, uint_t length, void * priv_data),
- void * priv_data) {
- vmm_io_hook_t * io_hook = (vmm_io_hook_t *)V3_Malloc(sizeof(vmm_io_hook_t));
io_hook->port = port;
io_hook->write = write;
}
- io_hook->next = NULL;
- io_hook->prev = NULL;
-
io_hook->priv_data = priv_data;
- if (add_io_hook(io_map, io_hook) != 0) {
- V3_Free(io_hook);
- return -1;
+ if (insert_io_hook(vm, io_hook)) {
+ PrintError(vm, VCORE_NONE, "Could not insert IO hook for port %u (0x%x)\n", port, port);
+ V3_Free(io_hook);
+ return -1;
+ }
+
+ if (vm->io_map.update_map) {
+ if (vm->io_map.update_map(vm, port,
+ ((read == NULL) ? 0 : 1),
+ ((write == NULL) ? 0 : 1)) == -1) {
+ PrintError(vm, VCORE_NONE, "Could not update IO map for port %u (0x%x)\n", port, port);
+ V3_Free(io_hook);
+ return -1;
+ }
}
return 0;
}
-int unhook_io_port(vmm_io_map_t * io_map, uint_t port) {
- vmm_io_hook_t * hook = get_io_hook(io_map, port);
- if (hook == NULL) {
- return -1;
- }
+static int free_hook(struct v3_vm_info * vm, struct v3_io_hook * hook) {
+ v3_rb_erase(&(hook->tree_node), &(vm->io_map.map));
- remove_io_hook(io_map, hook);
- return 0;
+ if (vm->io_map.update_map) {
+ // set the arch map to default (this should be 1, 1)
+ vm->io_map.update_map(vm, hook->port, 0, 0);
+ }
+
+ V3_Free(hook);
+
+ return 0;
}
+int v3_unhook_io_port(struct v3_vm_info * vm, uint16_t port) {
+ struct v3_io_hook * hook = v3_get_io_hook(vm, port);
-vmm_io_hook_t * get_io_hook(vmm_io_map_t * io_map, uint_t port) {
- vmm_io_hook_t * tmp_hook;
- FOREACH_IO_HOOK(*io_map, tmp_hook) {
- if (tmp_hook->port == port) {
- return tmp_hook;
+ if (hook == NULL) {
+ PrintError(vm, VCORE_NONE, "Could not find port to unhook %u (0x%x)\n", port, port);
+ return -1;
}
- }
- return NULL;
+
+ free_hook(vm, hook);
+
+ return 0;
}
-void PrintDebugIOMap(vmm_io_map_t * io_map) {
- vmm_io_hook_t * iter = io_map->head;
- PrintDebug("VMM IO Map (Entries=%d)\n", io_map->num_ports);
- while (iter) {
- PrintDebug("IO Port: %hu (Read=%x) (Write=%x)\n", iter->port, iter->read, iter->write);
- }
+
+
+void v3_refresh_io_map(struct v3_vm_info * vm) {
+ struct v3_io_map * io_map = &(vm->io_map);
+ struct v3_io_hook * tmp = NULL;
+
+ if (io_map->update_map == NULL) {
+ PrintError(vm, VCORE_NONE, "Trying to refresh an io map with no backend\n");
+ return;
+ }
+
+ v3_rb_for_each_entry(tmp, &(io_map->map), tree_node) {
+ io_map->update_map(vm, tmp->port,
+ ((tmp->read == NULL) ? 0 : 1),
+ ((tmp->write == NULL) ? 0 : 1));
+ }
+
+}
+
+
+
+void v3_print_io_map(struct v3_vm_info * vm) {
+ struct v3_io_map * io_map = &(vm->io_map);
+ struct v3_io_hook * tmp_hook = NULL;
+
+ V3_Print(vm, VCORE_NONE, "VMM IO Map\n");
+
+ v3_rb_for_each_entry(tmp_hook, &(io_map->map), tree_node) {
+ V3_Print(vm, VCORE_NONE, "IO Port: %hu (Read=%p) (Write=%p)\n",
+ tmp_hook->port,
+ (void *)(tmp_hook->read), (void *)(tmp_hook->write));
+ }
+}
+
+
+
+/*
+ * Write a byte to an I/O port.
+ */
+void v3_outb(uint16_t port, uint8_t value) {
+ __asm__ __volatile__ (
+ "outb %b0, %w1"
+ :
+ : "a" (value), "Nd" (port)
+ );
+}
+
+/*
+ * Read a byte from an I/O port.
+ */
+uint8_t v3_inb(uint16_t port) {
+ uint8_t value;
+
+ __asm__ __volatile__ (
+ "inb %w1, %b0"
+ : "=a" (value)
+ : "Nd" (port)
+ );
+
+ return value;
+}
+
+/*
+ * Write a word to an I/O port.
+ */
+void v3_outw(uint16_t port, uint16_t value) {
+ __asm__ __volatile__ (
+ "outw %w0, %w1"
+ :
+ : "a" (value), "Nd" (port)
+ );
+}
+
+/*
+ * Read a word from an I/O port.
+ */
+uint16_t v3_inw(uint16_t port) {
+ uint16_t value;
+
+ __asm__ __volatile__ (
+ "inw %w1, %w0"
+ : "=a" (value)
+ : "Nd" (port)
+ );
+
+ return value;
+}
+
+/*
+ * Write a double word to an I/O port.
+ */
+void v3_outdw(uint16_t port, uint_t value) {
+ __asm__ __volatile__ (
+ "outl %0, %1"
+ :
+ : "a" (value), "Nd" (port)
+ );
+}
+
+/*
+ * Read a double word from an I/O port.
+ */
+uint_t v3_indw(uint16_t port) {
+ uint_t value;
+
+ __asm__ __volatile__ (
+ "inl %1, %0"
+ : "=a" (value)
+ : "Nd" (port)
+ );
+
+ return value;
+}
+
+
+
+
+/* FIX ME */
+static int default_write(struct guest_info * core, uint16_t port, void * src, uint_t length, void * priv_data) {
+ if (length == 1) {
+ v3_outb(port, *(uint8_t *)src);
+ } else if (length == 2) {
+ v3_outw(port, *(uint16_t *)src);
+ } else if (length == 4) {
+ v3_outdw(port, *(uint32_t *)src);
+ } else {
+ return -1;
+ }
+
+ return length;
+}
+
+static int default_read(struct guest_info * core, uint16_t port, void * dst, uint_t length, void * priv_data) {
+ if (length == 1) {
+ *(uint8_t *)dst = v3_inb(port);
+ } else if (length == 2) {
+ *(uint16_t *)dst = v3_inw(port);
+ } else if (length == 4) {
+ *(uint32_t *)dst = v3_indw(port);
+ } else {
+ return -1;
+ }
+
+ return length;
}
