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-rw-r--r--hw/usb/desc.c15
-rw-r--r--hw/usb/desc.h1
-rw-r--r--hw/usb/dev-uas.c1
-rw-r--r--hw/usb/dev-wacom.c72
4 files changed, 81 insertions, 8 deletions
diff --git a/hw/usb/desc.c b/hw/usb/desc.c
index 8b6eaea407..7f6cc2f99b 100644
--- a/hw/usb/desc.c
+++ b/hw/usb/desc.c
@@ -632,7 +632,8 @@ int usb_desc_get_descriptor(USBDevice *dev, USBPacket *p,
     bool msos = (dev->flags & (1 << USB_DEV_FLAG_MSOS_DESC_IN_USE));
     const USBDesc *desc = usb_device_get_usb_desc(dev);
     const USBDescDevice *other_dev;
-    uint8_t buf[256];
+    size_t buflen = USB_DESC_MAX_LEN;
+    g_autofree uint8_t *buf = g_malloc(buflen);
     uint8_t type = value >> 8;
     uint8_t index = value & 0xff;
     int flags, ret = -1;
@@ -650,36 +651,36 @@ int usb_desc_get_descriptor(USBDevice *dev, USBPacket *p,
 
     switch(type) {
     case USB_DT_DEVICE:
-        ret = usb_desc_device(&desc->id, dev->device, msos, buf, sizeof(buf));
+        ret = usb_desc_device(&desc->id, dev->device, msos, buf, buflen);
         trace_usb_desc_device(dev->addr, len, ret);
         break;
     case USB_DT_CONFIG:
         if (index < dev->device->bNumConfigurations) {
             ret = usb_desc_config(dev->device->confs + index, flags,
-                                  buf, sizeof(buf));
+                                  buf, buflen);
         }
         trace_usb_desc_config(dev->addr, index, len, ret);
         break;
     case USB_DT_STRING:
-        ret = usb_desc_string(dev, index, buf, sizeof(buf));
+        ret = usb_desc_string(dev, index, buf, buflen);
         trace_usb_desc_string(dev->addr, index, len, ret);
         break;
     case USB_DT_DEVICE_QUALIFIER:
         if (other_dev != NULL) {
-            ret = usb_desc_device_qualifier(other_dev, buf, sizeof(buf));
+            ret = usb_desc_device_qualifier(other_dev, buf, buflen);
         }
         trace_usb_desc_device_qualifier(dev->addr, len, ret);
         break;
     case USB_DT_OTHER_SPEED_CONFIG:
         if (other_dev != NULL && index < other_dev->bNumConfigurations) {
             ret = usb_desc_config(other_dev->confs + index, flags,
-                                  buf, sizeof(buf));
+                                  buf, buflen);
             buf[0x01] = USB_DT_OTHER_SPEED_CONFIG;
         }
         trace_usb_desc_other_speed_config(dev->addr, index, len, ret);
         break;
     case USB_DT_BOS:
-        ret = usb_desc_bos(desc, buf, sizeof(buf));
+        ret = usb_desc_bos(desc, buf, buflen);
         trace_usb_desc_bos(dev->addr, len, ret);
         break;
 
diff --git a/hw/usb/desc.h b/hw/usb/desc.h
index 3ac604ecfa..35babdeff6 100644
--- a/hw/usb/desc.h
+++ b/hw/usb/desc.h
@@ -199,6 +199,7 @@ struct USBDesc {
     const USBDescMSOS         *msos;
 };
 
+#define USB_DESC_MAX_LEN    8192
 #define USB_DESC_FLAG_SUPER (1 << 1)
 
 /* little helpers */
diff --git a/hw/usb/dev-uas.c b/hw/usb/dev-uas.c
index 599d6b52a0..c9f295e7e4 100644
--- a/hw/usb/dev-uas.c
+++ b/hw/usb/dev-uas.c
@@ -908,6 +908,7 @@ static void usb_uas_handle_data(USBDevice *dev, USBPacket *p)
         p->status = USB_RET_STALL;
         break;
     }
+    return;
 
 err_stream:
     error_report("%s: invalid stream %d", __func__, p->stream);
diff --git a/hw/usb/dev-wacom.c b/hw/usb/dev-wacom.c
index ed687bc9f1..8323650c6a 100644
--- a/hw/usb/dev-wacom.c
+++ b/hw/usb/dev-wacom.c
@@ -69,6 +69,65 @@ static const USBDescStrings desc_strings = {
     [STR_SERIALNUMBER]     = "1",
 };
 
+static const uint8_t qemu_wacom_hid_report_descriptor[] = {
+    0x05, 0x01,      /* Usage Page (Desktop) */
+    0x09, 0x02,      /* Usage (Mouse) */
+    0xa1, 0x01,      /* Collection (Application) */
+    0x85, 0x01,      /*    Report ID (1) */
+    0x09, 0x01,      /*    Usage (Pointer) */
+    0xa1, 0x00,      /*    Collection (Physical) */
+    0x05, 0x09,      /*       Usage Page (Button) */
+    0x19, 0x01,      /*       Usage Minimum (01h) */
+    0x29, 0x03,      /*       Usage Maximum (03h) */
+    0x15, 0x00,      /*       Logical Minimum (0) */
+    0x25, 0x01,      /*       Logical Maximum (1) */
+    0x95, 0x03,      /*       Report Count (3) */
+    0x75, 0x01,      /*       Report Size (1) */
+    0x81, 0x02,      /*       Input (Data, Variable, Absolute) */
+    0x95, 0x01,      /*       Report Count (1) */
+    0x75, 0x05,      /*       Report Size (5) */
+    0x81, 0x01,      /*       Input (Constant) */
+    0x05, 0x01,      /*       Usage Page (Desktop) */
+    0x09, 0x30,      /*       Usage (X) */
+    0x09, 0x31,      /*       Usage (Y) */
+    0x09, 0x38,      /*       Usage (Wheel) */
+    0x15, 0x81,      /*       Logical Minimum (-127) */
+    0x25, 0x7f,      /*       Logical Maximum (127) */
+    0x75, 0x08,      /*       Report Size (8) */
+    0x95, 0x03,      /*       Report Count (3) */
+    0x81, 0x06,      /*       Input (Data, Variable, Relative) */
+    0x95, 0x03,      /*       Report Count (3) */
+    0x81, 0x01,      /*       Input (Constant) */
+    0xc0,            /*    End Collection */
+    0xc0,            /* End Collection */
+    0x05, 0x0d,      /* Usage Page (Digitizer) */
+    0x09, 0x01,      /* Usage (Digitizer) */
+    0xa1, 0x01,      /* Collection (Application) */
+    0x85, 0x02,      /*    Report ID (2) */
+    0xa1, 0x00,      /*    Collection (Physical) */
+    0x06, 0x00, 0xff,/*       Usage Page (ff00h), vendor-defined */
+    0x09, 0x01,      /*       Usage (01h) */
+    0x15, 0x00,      /*       Logical Minimum (0) */
+    0x26, 0xff, 0x00,/*       Logical Maximum (255) */
+    0x75, 0x08,      /*       Report Size (8) */
+    0x95, 0x07,      /*       Report Count (7) */
+    0x81, 0x02,      /*       Input (Data, Variable, Absolute) */
+    0xc0,            /*    End Collection */
+    0x09, 0x01,      /*    Usage (01h) */
+    0x85, 0x63,      /*    Report ID (99) */
+    0x95, 0x07,      /*    Report Count (7) */
+    0x81, 0x02,      /*    Input (Data, Variable, Absolute) */
+    0x09, 0x01,      /*    Usage (01h) */
+    0x85, 0x02,      /*    Report ID (2) */
+    0x95, 0x01,      /*    Report Count (1) */
+    0xb1, 0x02,      /*    Feature (Variable) */
+    0x09, 0x01,      /*    Usage (01h) */
+    0x85, 0x03,      /*    Report ID (3) */
+    0x95, 0x01,      /*    Report Count (1) */
+    0xb1, 0x02,      /*    Feature (Variable) */
+    0xc0             /* End Collection */
+};
+
 static const USBDescIface desc_iface_wacom = {
     .bInterfaceNumber              = 0,
     .bNumEndpoints                 = 1,
@@ -86,7 +145,7 @@ static const USBDescIface desc_iface_wacom = {
                 0x00,          /*  u8  country_code */
                 0x01,          /*  u8  num_descriptors */
                 USB_DT_REPORT, /*  u8  type: Report */
-                0x6e, 0,       /*  u16 len */
+                sizeof(qemu_wacom_hid_report_descriptor), 0, /*  u16 len */
             },
         },
     },
@@ -266,6 +325,17 @@ static void usb_wacom_handle_control(USBDevice *dev, USBPacket *p,
     }
 
     switch (request) {
+    case InterfaceRequest | USB_REQ_GET_DESCRIPTOR:
+        switch (value >> 8) {
+        case 0x22:
+                memcpy(data, qemu_wacom_hid_report_descriptor,
+                       sizeof(qemu_wacom_hid_report_descriptor));
+                p->actual_length = sizeof(qemu_wacom_hid_report_descriptor);
+            break;
+        default:
+            return;
+        }
+        break;
     case WACOM_SET_REPORT:
         if (s->mouse_grabbed) {
             qemu_remove_mouse_event_handler(s->eh_entry);