+/*
+ * 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>
-extern struct vmm_os_hooks * os_hooks;
-void init_vmm_io_map(vmm_io_map_t * io_map) {
- io_map->num_ports = 0;
- io_map->head = NULL;
+
+
+#ifndef DEBUG_IO
+#undef PrintDebug
+#define PrintDebug(fmt, args...)
+#endif
+
+
+static int default_write(ushort_t port, void *src, uint_t length, void * priv_data);
+static int default_read(ushort_t port, void * dst, uint_t length, void * priv_data);
+
+
+void v3_init_io_map(struct guest_info * info) {
+ info->io_map.rb_node = NULL;
}
-void add_io_hook(vmm_io_map_t * io_map, vmm_io_hook_t * io_hook) {
- vmm_io_hook_t * tmp_hook = io_map->head;
- if (!tmp_hook) {
- io_map->head = io_hook;
- io_map->num_ports = 1;
- return;
- } else {
- 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;
-
- VMMFree(io_hook);
- return;
- } else if (!tmp_hook->next) {
- tmp_hook->next = io_hook;
- io_hook->prev = tmp_hook;
- io_map->num_ports++;
-
- return;
+static inline struct v3_io_hook * __insert_io_hook(struct guest_info * info, struct v3_io_hook * hook) {
+ struct rb_node ** p = &(info->io_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);
+
+ if (hook->port < tmp_hook->port) {
+ p = &(*p)->rb_left;
+ } else if (hook->port > tmp_hook->port) {
+ p = &(*p)->rb_right;
} else {
- io_hook->next = tmp_hook->next;
- io_hook->prev = tmp_hook;
-
- tmp_hook->next = io_hook;
- if (io_hook->next) {
- io_hook->next->prev = io_hook;
- }
-
- io_map->num_ports++;
- return;
+ return tmp_hook;
}
}
+ rb_link_node(&(hook->tree_node), parent, p);
+
+ return NULL;
}
-void 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 {
- // data corruption failure
- }
-
- if (io_hook->next) {
- io_hook->next->prev = io_hook->prev;
+
+static inline struct v3_io_hook * insert_io_hook(struct guest_info * info, struct v3_io_hook * hook) {
+ struct v3_io_hook * ret;
+
+ if ((ret = __insert_io_hook(info, hook))) {
+ return ret;
}
- io_map->num_ports--;
+ v3_rb_insert_color(&(hook->tree_node), &(info->io_map));
- return;
+ return NULL;
}
-void 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 = os_hooks->malloc(sizeof(vmm_io_hook_t));
+struct v3_io_hook * v3_get_io_hook(struct guest_info * info, uint_t port) {
+ struct rb_node * n = info->io_map.rb_node;
+ struct v3_io_hook * hook = NULL;
+
+ while (n) {
+ hook = rb_entry(n, struct v3_io_hook, tree_node);
+
+ if (port < hook->port) {
+ n = n->rb_left;
+ } else if (port > hook->port) {
+ n = n->rb_right;
+ } else {
+ return hook;
+ }
+ }
+
+ return NULL;
+}
+
+
+
+
+
+
+int v3_hook_io_port(struct guest_info * info, 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) {
+ struct v3_io_hook * io_hook = (struct v3_io_hook *)V3_Malloc(sizeof(struct v3_io_hook));
io_hook->port = port;
- io_hook->read = read;
- io_hook->write = write;
- io_hook->next = NULL;
- io_hook->prev = NULL;
+
+ if (!read) {
+ io_hook->read = &default_read;
+ } else {
+ io_hook->read = read;
+ }
+
+ if (!write) {
+ io_hook->write = &default_write;
+ } else {
+ io_hook->write = write;
+ }
+
io_hook->priv_data = priv_data;
- add_io_hook(io_map, io_hook);
+ if (insert_io_hook(info, io_hook)) {
+ V3_Free(io_hook);
+ return -1;
+ }
- return;
+ 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);
+int v3_unhook_io_port(struct guest_info * info, uint_t port) {
+ struct v3_io_hook * hook = v3_get_io_hook(info, port);
if (hook == NULL) {
return -1;
}
- remove_io_hook(io_map, hook);
+ v3_rb_erase(&(hook->tree_node), &(info->io_map));
+
+ V3_Free(hook);
+
return 0;
}
-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;
- }
- }
- return NULL;
+
+
+
+
+void v3_print_io_map(struct guest_info * info) {
+ struct v3_io_hook * tmp_hook = NULL;
+ struct rb_node * node = v3_rb_first(&(info->io_map));
+
+ PrintDebug("VMM IO Map\n");
+
+ do {
+ tmp_hook = rb_entry(node, struct v3_io_hook, tree_node);
+
+ PrintDebug("IO Port: %hu (Read=%p) (Write=%p)\n",
+ tmp_hook->port,
+ (void *)(tmp_hook->read), (void *)(tmp_hook->write));
+ } while ((node = v3_rb_next(node)));
+}
+
+
+
+/*
+ * Write a byte to an I/O port.
+ */
+void v3_outb(ushort_t port, uchar_t value) {
+ __asm__ __volatile__ (
+ "outb %b0, %w1"
+ :
+ : "a" (value), "Nd" (port)
+ );
+}
+
+/*
+ * Read a byte from an I/O port.
+ */
+uchar_t v3_inb(ushort_t port) {
+ uchar_t value;
+
+ __asm__ __volatile__ (
+ "inb %w1, %b0"
+ : "=a" (value)
+ : "Nd" (port)
+ );
+
+ return value;
+}
+
+/*
+ * Write a word to an I/O port.
+ */
+void v3_outw(ushort_t port, ushort_t value) {
+ __asm__ __volatile__ (
+ "outw %w0, %w1"
+ :
+ : "a" (value), "Nd" (port)
+ );
}
+/*
+ * Read a word from an I/O port.
+ */
+ushort_t v3_inw(ushort_t port) {
+ ushort_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(ushort_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(ushort_t port) {
+ uint_t value;
+
+ __asm__ __volatile__ (
+ "inl %1, %0"
+ : "=a" (value)
+ : "Nd" (port)
+ );
+
+ return value;
+}
-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);
+
+/* FIX ME */
+static int default_write(ushort_t port, void *src, uint_t length, void * priv_data) {
+ /*
+
+ 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)
+ );
}
+ */
+ return 0;
+}
+
+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;
}
