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Diffstat (limited to 'hw/usb-hid.c')
-rw-r--r--hw/usb-hid.c220
1 files changed, 205 insertions, 15 deletions
diff --git a/hw/usb-hid.c b/hw/usb-hid.c
index 6f9ee827d8..17160ebe32 100644
--- a/hw/usb-hid.c
+++ b/hw/usb-hid.c
@@ -30,9 +30,15 @@
#define SET_IDLE 0x210a
#define SET_PROTOCOL 0x210b
+#define USB_MOUSE 1
+#define USB_TABLET 2
+
typedef struct USBMouseState {
USBDevice dev;
int dx, dy, dz, buttons_state;
+ int x, y;
+ int kind;
+ int mouse_grabbed;
} USBMouseState;
/* mostly the same values as the Bochs USB Mouse device */
@@ -93,6 +99,15 @@ static const uint8_t qemu_mouse_config_descriptor[] = {
0x02, /* u8 if_bInterfaceProtocol; [usb1.1 or single tt] */
0x05, /* u8 if_iInterface; */
+ /* HID descriptor */
+ 0x09, /* u8 bLength; */
+ 0x21, /* u8 bDescriptorType; */
+ 0x01, 0x00, /* u16 HID_class */
+ 0x00, /* u8 country_code */
+ 0x01, /* u8 num_descriptors */
+ 0x22, /* u8 type; Report */
+ 50, 0, /* u16 len */
+
/* one endpoint (status change endpoint) */
0x07, /* u8 ep_bLength; */
0x05, /* u8 ep_bDescriptorType; Endpoint */
@@ -100,6 +115,44 @@ static const uint8_t qemu_mouse_config_descriptor[] = {
0x03, /* u8 ep_bmAttributes; Interrupt */
0x03, 0x00, /* u16 ep_wMaxPacketSize; */
0x0a, /* u8 ep_bInterval; (255ms -- usb 2.0 spec) */
+};
+
+static const uint8_t qemu_tablet_config_descriptor[] = {
+ /* one configuration */
+ 0x09, /* u8 bLength; */
+ 0x02, /* u8 bDescriptorType; Configuration */
+ 0x22, 0x00, /* u16 wTotalLength; */
+ 0x01, /* u8 bNumInterfaces; (1) */
+ 0x01, /* u8 bConfigurationValue; */
+ 0x04, /* u8 iConfiguration; */
+ 0xa0, /* u8 bmAttributes;
+ Bit 7: must be set,
+ 6: Self-powered,
+ 5: Remote wakeup,
+ 4..0: resvd */
+ 50, /* u8 MaxPower; */
+
+ /* USB 1.1:
+ * USB 2.0, single TT organization (mandatory):
+ * one interface, protocol 0
+ *
+ * USB 2.0, multiple TT organization (optional):
+ * two interfaces, protocols 1 (like single TT)
+ * and 2 (multiple TT mode) ... config is
+ * sometimes settable
+ * NOT IMPLEMENTED
+ */
+
+ /* one interface */
+ 0x09, /* u8 if_bLength; */
+ 0x04, /* u8 if_bDescriptorType; Interface */
+ 0x00, /* u8 if_bInterfaceNumber; */
+ 0x00, /* u8 if_bAlternateSetting; */
+ 0x01, /* u8 if_bNumEndpoints; */
+ 0x03, /* u8 if_bInterfaceClass; */
+ 0x01, /* u8 if_bInterfaceSubClass; */
+ 0x02, /* u8 if_bInterfaceProtocol; [usb1.1 or single tt] */
+ 0x05, /* u8 if_iInterface; */
/* HID descriptor */
0x09, /* u8 bLength; */
@@ -108,7 +161,15 @@ static const uint8_t qemu_mouse_config_descriptor[] = {
0x00, /* u8 country_code */
0x01, /* u8 num_descriptors */
0x22, /* u8 type; Report */
- 50, 0, /* u16 len */
+ 74, 0, /* u16 len */
+
+ /* one endpoint (status change endpoint) */
+ 0x07, /* u8 ep_bLength; */
+ 0x05, /* u8 ep_bDescriptorType; Endpoint */
+ 0x81, /* u8 ep_bEndpointAddress; IN Endpoint 1 */
+ 0x03, /* u8 ep_bmAttributes; Interrupt */
+ 0x08, 0x00, /* u16 ep_wMaxPacketSize; */
+ 0x03, /* u8 ep_bInterval; (255ms -- usb 2.0 spec) */
};
static const uint8_t qemu_mouse_hid_report_descriptor[] = {
@@ -121,6 +182,46 @@ static const uint8_t qemu_mouse_hid_report_descriptor[] = {
0xC0, 0xC0,
};
+static const uint8_t qemu_tablet_hid_report_descriptor[] = {
+ 0x05, 0x01, /* Usage Page Generic Desktop */
+ 0x09, 0x01, /* Usage Mouse */
+ 0xA1, 0x01, /* Collection Application */
+ 0x09, 0x01, /* Usage Pointer */
+ 0xA1, 0x00, /* Collection Physical */
+ 0x05, 0x09, /* Usage Page Button */
+ 0x19, 0x01, /* Usage Minimum Button 1 */
+ 0x29, 0x03, /* Usage Maximum Button 3 */
+ 0x15, 0x00, /* Logical Minimum 0 */
+ 0x25, 0x01, /* Logical Maximum 1 */
+ 0x95, 0x03, /* Report Count 3 */
+ 0x75, 0x01, /* Report Size 1 */
+ 0x81, 0x02, /* Input (Data, Var, Abs) */
+ 0x95, 0x01, /* Report Count 1 */
+ 0x75, 0x05, /* Report Size 5 */
+ 0x81, 0x01, /* Input (Cnst, Var, Abs) */
+ 0x05, 0x01, /* Usage Page Generic Desktop */
+ 0x09, 0x30, /* Usage X */
+ 0x09, 0x31, /* Usage Y */
+ 0x15, 0x00, /* Logical Minimum 0 */
+ 0x26, 0xFF, 0x7F, /* Logical Maximum 0x7fff */
+ 0x35, 0x00, /* Physical Minimum 0 */
+ 0x46, 0xFE, 0x7F, /* Physical Maximum 0x7fff */
+ 0x75, 0x10, /* Report Size 16 */
+ 0x95, 0x02, /* Report Count 2 */
+ 0x81, 0x02, /* Input (Data, Var, Abs) */
+ 0x05, 0x01, /* Usage Page Generic Desktop */
+ 0x09, 0x38, /* Usage Wheel */
+ 0x15, 0x81, /* Logical Minimum -127 */
+ 0x25, 0x7F, /* Logical Maximum 127 */
+ 0x35, 0x00, /* Physical Minimum 0 (same as logical) */
+ 0x45, 0x00, /* Physical Maximum 0 (same as logical) */
+ 0x75, 0x08, /* Report Size 8 */
+ 0x95, 0x01, /* Report Count 1 */
+ 0x81, 0x02, /* Input (Data, Var, Rel) */
+ 0xC0, /* End Collection */
+ 0xC0, /* End Collection */
+};
+
static void usb_mouse_event(void *opaque,
int dx1, int dy1, int dz1, int buttons_state)
{
@@ -132,6 +233,17 @@ static void usb_mouse_event(void *opaque,
s->buttons_state = buttons_state;
}
+static void usb_tablet_event(void *opaque,
+ int x, int y, int dz, int buttons_state)
+{
+ USBMouseState *s = opaque;
+
+ s->x = x;
+ s->y = y;
+ s->dz += dz;
+ s->buttons_state = buttons_state;
+}
+
static inline int int_clamp(int val, int vmin, int vmax)
{
if (val < vmin)
@@ -146,6 +258,11 @@ static int usb_mouse_poll(USBMouseState *s, uint8_t *buf, int len)
{
int dx, dy, dz, b, l;
+ if (!s->mouse_grabbed) {
+ qemu_add_mouse_event_handler(usb_mouse_event, s, 0);
+ s->mouse_grabbed = 1;
+ }
+
dx = int_clamp(s->dx, -128, 127);
dy = int_clamp(s->dy, -128, 127);
dz = int_clamp(s->dz, -128, 127);
@@ -173,6 +290,39 @@ static int usb_mouse_poll(USBMouseState *s, uint8_t *buf, int len)
return l;
}
+static int usb_tablet_poll(USBMouseState *s, uint8_t *buf, int len)
+{
+ int dz, b, l;
+
+ if (!s->mouse_grabbed) {
+ qemu_add_mouse_event_handler(usb_tablet_event, s, 1);
+ s->mouse_grabbed = 1;
+ }
+
+ dz = int_clamp(s->dz, -128, 127);
+ s->dz -= dz;
+
+ /* Appears we have to invert the wheel direction */
+ dz = 0 - dz;
+ b = 0;
+ if (s->buttons_state & MOUSE_EVENT_LBUTTON)
+ b |= 0x01;
+ if (s->buttons_state & MOUSE_EVENT_RBUTTON)
+ b |= 0x02;
+ if (s->buttons_state & MOUSE_EVENT_MBUTTON)
+ b |= 0x04;
+
+ buf[0] = b;
+ buf[1] = s->x & 0xff;
+ buf[2] = s->x >> 8;
+ buf[3] = s->y & 0xff;
+ buf[4] = s->y >> 8;
+ buf[5] = dz;
+ l = 6;
+
+ return l;
+}
+
static void usb_mouse_handle_reset(USBDevice *dev)
{
USBMouseState *s = (USBMouseState *)dev;
@@ -180,6 +330,8 @@ static void usb_mouse_handle_reset(USBDevice *dev)
s->dx = 0;
s->dy = 0;
s->dz = 0;
+ s->x = 0;
+ s->y = 0;
s->buttons_state = 0;
}
@@ -187,7 +339,7 @@ static int usb_mouse_handle_control(USBDevice *dev, int request, int value,
int index, int length, uint8_t *data)
{
USBMouseState *s = (USBMouseState *)dev;
- int ret;
+ int ret = 0;
switch(request) {
case DeviceRequest | USB_REQ_GET_STATUS:
@@ -224,9 +376,15 @@ static int usb_mouse_handle_control(USBDevice *dev, int request, int value,
ret = sizeof(qemu_mouse_dev_descriptor);
break;
case USB_DT_CONFIG:
- memcpy(data, qemu_mouse_config_descriptor,
- sizeof(qemu_mouse_config_descriptor));
- ret = sizeof(qemu_mouse_config_descriptor);
+ if (s->kind == USB_MOUSE) {
+ memcpy(data, qemu_mouse_config_descriptor,
+ sizeof(qemu_mouse_config_descriptor));
+ ret = sizeof(qemu_mouse_config_descriptor);
+ } else if (s->kind == USB_TABLET) {
+ memcpy(data, qemu_tablet_config_descriptor,
+ sizeof(qemu_tablet_config_descriptor));
+ ret = sizeof(qemu_tablet_config_descriptor);
+ }
break;
case USB_DT_STRING:
switch(value & 0xff) {
@@ -244,7 +402,10 @@ static int usb_mouse_handle_control(USBDevice *dev, int request, int value,
break;
case 2:
/* product description */
- ret = set_usb_string(data, "QEMU USB Mouse");
+ if (s->kind == USB_MOUSE)
+ ret = set_usb_string(data, "QEMU USB Mouse");
+ else if (s->kind == USB_TABLET)
+ ret = set_usb_string(data, "QEMU USB Tablet");
break;
case 3:
/* vendor description */
@@ -282,16 +443,25 @@ static int usb_mouse_handle_control(USBDevice *dev, int request, int value,
case InterfaceRequest | USB_REQ_GET_DESCRIPTOR:
switch(value >> 8) {
case 0x22:
- memcpy(data, qemu_mouse_hid_report_descriptor,
- sizeof(qemu_mouse_hid_report_descriptor));
- ret = sizeof(qemu_mouse_hid_report_descriptor);
- break;
+ if (s->kind == USB_MOUSE) {
+ memcpy(data, qemu_mouse_hid_report_descriptor,
+ sizeof(qemu_mouse_hid_report_descriptor));
+ ret = sizeof(qemu_mouse_hid_report_descriptor);
+ } else if (s->kind == USB_TABLET) {
+ memcpy(data, qemu_tablet_hid_report_descriptor,
+ sizeof(qemu_tablet_hid_report_descriptor));
+ ret = sizeof(qemu_tablet_hid_report_descriptor);
+ }
+ break;
default:
goto fail;
}
break;
case GET_REPORT:
- ret = usb_mouse_poll(s, data, length);
+ if (s->kind == USB_MOUSE)
+ ret = usb_mouse_poll(s, data, length);
+ else if (s->kind == USB_TABLET)
+ ret = usb_tablet_poll(s, data, length);
break;
case SET_IDLE:
ret = 0;
@@ -308,12 +478,15 @@ static int usb_mouse_handle_data(USBDevice *dev, int pid,
uint8_t devep, uint8_t *data, int len)
{
USBMouseState *s = (USBMouseState *)dev;
- int ret;
+ int ret = 0;
switch(pid) {
case USB_TOKEN_IN:
if (devep == 1) {
- ret = usb_mouse_poll(s, data, len);
+ if (s->kind == USB_MOUSE)
+ ret = usb_mouse_poll(s, data, len);
+ else if (s->kind == USB_TABLET)
+ ret = usb_tablet_poll(s, data, len);
} else {
goto fail;
}
@@ -327,6 +500,24 @@ static int usb_mouse_handle_data(USBDevice *dev, int pid,
return ret;
}
+USBDevice *usb_tablet_init(void)
+{
+ USBMouseState *s;
+
+ s = qemu_mallocz(sizeof(USBMouseState));
+ if (!s)
+ return NULL;
+ s->dev.speed = USB_SPEED_FULL;
+ s->dev.handle_packet = usb_generic_handle_packet;
+
+ s->dev.handle_reset = usb_mouse_handle_reset;
+ s->dev.handle_control = usb_mouse_handle_control;
+ s->dev.handle_data = usb_mouse_handle_data;
+ s->kind = USB_TABLET;
+
+ return (USBDevice *)s;
+}
+
USBDevice *usb_mouse_init(void)
{
USBMouseState *s;
@@ -340,8 +531,7 @@ USBDevice *usb_mouse_init(void)
s->dev.handle_reset = usb_mouse_handle_reset;
s->dev.handle_control = usb_mouse_handle_control;
s->dev.handle_data = usb_mouse_handle_data;
+ s->kind = USB_MOUSE;
- qemu_add_mouse_event_handler(usb_mouse_event, s);
-
return (USBDevice *)s;
}
generated by cgit v1.2.3 (git 2.26.2) at 2024-12-13 23:01:04 +0000