#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) {
+
+
+#ifndef DEBUG_IO
+#undef PrintDebug
+#define PrintDebug(fmt, args...)
+#endif
+
+
+void init_vmm_io_map(struct vmm_io_map * io_map) {
io_map->num_ports = 0;
io_map->head = 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) {
+
+static int add_io_hook(struct vmm_io_map * io_map, struct vmm_io_hook * io_hook) {
+
+ if (!(io_map->head)) {
io_map->head = io_hook;
io_map->num_ports = 1;
- return;
+ 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 {
+ struct vmm_io_hook * tmp_hook = io_map->head;
+
while ((tmp_hook->next) &&
(tmp_hook->next->port <= io_hook->port)) {
- tmp_hook = tmp_hook->next;
+ 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;
+ //tmp_hook->read = io_hook->read;
+ //tmp_hook->write = io_hook->write;
+ //V3_Free(io_hook);
+ return -1;
} 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_hook->next = tmp_hook->next;
+
+ if (tmp_hook->next) {
+ tmp_hook->next->prev = io_hook;
}
-
+
+ tmp_hook->next = io_hook;
+
io_map->num_ports++;
- return;
+ return 0;
}
}
+ return -1;
+}
+
+static int remove_io_hook(struct vmm_io_map * io_map, struct vmm_io_hook * 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;
+ }
+
+ io_map->num_ports--;
+
+ return 0;
+}
+
+
+
+/* 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;
}
-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));
+int v3_hook_io_port(struct vmm_io_map * 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) {
+ struct vmm_io_hook * io_hook = (struct vmm_io_hook *)V3_Malloc(sizeof(struct vmm_io_hook));
io_hook->port = port;
- io_hook->read = read;
- io_hook->write = write;
+
+ 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->next = NULL;
io_hook->prev = NULL;
io_hook->priv_data = priv_data;
- add_io_hook(io_map, io_hook);
+ if (add_io_hook(io_map, io_hook) != 0) {
+ V3_Free(io_hook);
+ return -1;
+ }
+
+ return 0;
+}
+
+int v3_unhook_io_port(struct vmm_io_map * io_map, uint_t port) {
+ struct vmm_io_hook * hook = v3_get_io_hook(io_map, port);
+
+ if (hook == NULL) {
+ return -1;
+ }
- return;
+ remove_io_hook(io_map, 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;
+struct vmm_io_hook * v3_get_io_hook(struct vmm_io_map * io_map, uint_t port) {
+ struct vmm_io_hook * tmp_hook;
FOREACH_IO_HOOK(*io_map, tmp_hook) {
if (tmp_hook->port == port) {
return tmp_hook;
-void PrintDebugIOMap(vmm_io_map_t * io_map) {
- vmm_io_hook_t * iter = io_map->head;
+void PrintDebugIOMap(struct vmm_io_map * io_map) {
+ struct vmm_io_hook * iter = io_map->head;
PrintDebug("VMM IO Map (Entries=%d)\n", io_map->num_ports);
