OHCI USB host emulation.
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@1928 c046a42c-6fe2-441c-8c8c-71466251a162
diff --git a/vl.c b/vl.c
index e828d31..b641299 100644
--- a/vl.c
+++ b/vl.c
@@ -106,6 +106,9 @@
/* in ms */
#define GUI_REFRESH_INTERVAL 30
+/* Max number of USB devices that can be specified on the commandline. */
+#define MAX_USB_CMDLINE 8
+
/* XXX: use a two level table to limit memory usage */
#define MAX_IOPORTS 65536
@@ -145,8 +148,6 @@
int win2k_install_hack = 0;
#endif
int usb_enabled = 0;
-USBPort *vm_usb_ports[MAX_VM_USB_PORTS];
-USBDevice *vm_usb_hub;
static VLANState *first_vlan;
int smp_cpus = 1;
int vnc_display = -1;
@@ -3249,47 +3250,71 @@
/***********************************************************/
/* USB devices */
+static USBPort *used_usb_ports;
+static USBPort *free_usb_ports;
+
+/* ??? Maybe change this to register a hub to keep track of the topology. */
+void qemu_register_usb_port(USBPort *port, void *opaque, int index,
+ usb_attachfn attach)
+{
+ port->opaque = opaque;
+ port->index = index;
+ port->attach = attach;
+ port->next = free_usb_ports;
+ free_usb_ports = port;
+}
+
static int usb_device_add(const char *devname)
{
const char *p;
USBDevice *dev;
- int i;
+ USBPort *port;
- if (!vm_usb_hub)
- return -1;
- for(i = 0;i < MAX_VM_USB_PORTS; i++) {
- if (!vm_usb_ports[i]->dev)
- break;
- }
- if (i == MAX_VM_USB_PORTS)
+ if (!free_usb_ports)
return -1;
if (strstart(devname, "host:", &p)) {
dev = usb_host_device_open(p);
- if (!dev)
- return -1;
} else if (!strcmp(devname, "mouse")) {
dev = usb_mouse_init();
- if (!dev)
- return -1;
} else if (!strcmp(devname, "tablet")) {
dev = usb_tablet_init();
- if (!dev)
- return -1;
} else {
return -1;
}
- usb_attach(vm_usb_ports[i], dev);
+ if (!dev)
+ return -1;
+
+ /* Find a USB port to add the device to. */
+ port = free_usb_ports;
+ if (!port->next) {
+ USBDevice *hub;
+
+ /* Create a new hub and chain it on. */
+ free_usb_ports = NULL;
+ port->next = used_usb_ports;
+ used_usb_ports = port;
+
+ hub = usb_hub_init(VM_USB_HUB_SIZE);
+ usb_attach(port, hub);
+ port = free_usb_ports;
+ }
+
+ free_usb_ports = port->next;
+ port->next = used_usb_ports;
+ used_usb_ports = port;
+ usb_attach(port, dev);
return 0;
}
static int usb_device_del(const char *devname)
{
- USBDevice *dev;
- int bus_num, addr, i;
+ USBPort *port;
+ USBPort **lastp;
+ int bus_num, addr;
const char *p;
- if (!vm_usb_hub)
+ if (!used_usb_ports)
return -1;
p = strchr(devname, '.');
@@ -3299,14 +3324,21 @@
addr = strtoul(p + 1, NULL, 0);
if (bus_num != 0)
return -1;
- for(i = 0;i < MAX_VM_USB_PORTS; i++) {
- dev = vm_usb_ports[i]->dev;
- if (dev && dev->addr == addr)
- break;
+
+ lastp = &used_usb_ports;
+ port = used_usb_ports;
+ while (port && port->dev->addr != addr) {
+ lastp = &port->next;
+ port = port->next;
}
- if (i == MAX_VM_USB_PORTS)
+
+ if (!port)
return -1;
- usb_attach(vm_usb_ports[i], NULL);
+
+ *lastp = port->next;
+ usb_attach(port, NULL);
+ port->next = free_usb_ports;
+ free_usb_ports = port;
return 0;
}
@@ -3329,35 +3361,34 @@
void usb_info(void)
{
USBDevice *dev;
- int i;
+ USBPort *port;
const char *speed_str;
- if (!vm_usb_hub) {
+ if (!usb_enabled) {
term_printf("USB support not enabled\n");
return;
}
- for(i = 0; i < MAX_VM_USB_PORTS; i++) {
- dev = vm_usb_ports[i]->dev;
- if (dev) {
- term_printf("Hub port %d:\n", i);
- switch(dev->speed) {
- case USB_SPEED_LOW:
- speed_str = "1.5";
- break;
- case USB_SPEED_FULL:
- speed_str = "12";
- break;
- case USB_SPEED_HIGH:
- speed_str = "480";
- break;
- default:
- speed_str = "?";
- break;
- }
- term_printf(" Device %d.%d, speed %s Mb/s\n",
- 0, dev->addr, speed_str);
+ for (port = used_usb_ports; port; port = port->next) {
+ dev = port->dev;
+ if (!dev)
+ continue;
+ switch(dev->speed) {
+ case USB_SPEED_LOW:
+ speed_str = "1.5";
+ break;
+ case USB_SPEED_FULL:
+ speed_str = "12";
+ break;
+ case USB_SPEED_HIGH:
+ speed_str = "480";
+ break;
+ default:
+ speed_str = "?";
+ break;
}
+ term_printf(" Device %d.%d, speed %s Mb/s\n",
+ 0, dev->addr, speed_str);
}
}
@@ -5066,7 +5097,7 @@
int parallel_device_index;
const char *loadvm = NULL;
QEMUMachine *machine;
- char usb_devices[MAX_VM_USB_PORTS][128];
+ char usb_devices[MAX_USB_CMDLINE][128];
int usb_devices_index;
LIST_INIT (&vm_change_state_head);
@@ -5425,7 +5456,7 @@
break;
case QEMU_OPTION_usbdevice:
usb_enabled = 1;
- if (usb_devices_index >= MAX_VM_USB_PORTS) {
+ if (usb_devices_index >= MAX_USB_CMDLINE) {
fprintf(stderr, "Too many USB devices\n");
exit(1);
}
@@ -5596,17 +5627,6 @@
}
}
- /* init USB devices */
- if (usb_enabled) {
- vm_usb_hub = usb_hub_init(vm_usb_ports, MAX_VM_USB_PORTS);
- for(i = 0; i < usb_devices_index; i++) {
- if (usb_device_add(usb_devices[i]) < 0) {
- fprintf(stderr, "Warning: could not add USB device %s\n",
- usb_devices[i]);
- }
- }
- }
-
register_savevm("timer", 0, 1, timer_save, timer_load, NULL);
register_savevm("ram", 0, 1, ram_save, ram_load, NULL);
@@ -5710,6 +5730,16 @@
ds, fd_filename, snapshot,
kernel_filename, kernel_cmdline, initrd_filename);
+ /* init USB devices */
+ if (usb_enabled) {
+ for(i = 0; i < usb_devices_index; i++) {
+ if (usb_device_add(usb_devices[i]) < 0) {
+ fprintf(stderr, "Warning: could not add USB device %s\n",
+ usb_devices[i]);
+ }
+ }
+ }
+
gui_timer = qemu_new_timer(rt_clock, gui_update, NULL);
qemu_mod_timer(gui_timer, qemu_get_clock(rt_clock));
