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qemu/hw/usb-hid.c
Gerd Hoffmann 7b074a22da usb: hid: change serial number to "42". 
It would be nice to have some way to signal our hid devices support
remote wakeup.  There is a descriptor bit for that of course.  Problem
with using is one is that older qemu versions used to set the bit even
though they did *not* support remote wakeup.  Bummer.

This patch changes the serial number of our hid devices from "1" to "42"
to signal "it is safe to enable remote wakeup".  The serial number was
choosen because it isn't used for anything and it is available in sysfs
so it is easy to match it using udev rules like this:

ACTION=="add", SUBSYSTEM=="usb", \
	ATTR{product}=="QEMU USB Tablet", ATTR{serial}=="42", \
	RUN+="usb_enable_autosuspend %p"

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
2011-01-11 17:01:03 +01:00

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/*
* QEMU USB HID devices
*
* Copyright (c) 2005 Fabrice Bellard
* Copyright (c) 2007 OpenMoko, Inc. (andrew@openedhand.com)
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "hw.h"
#include "console.h"
#include "usb.h"
#include "usb-desc.h"
#include "sysemu.h"
/* HID interface requests */
#define GET_REPORT 0xa101
#define GET_IDLE 0xa102
#define GET_PROTOCOL 0xa103
#define SET_REPORT 0x2109
#define SET_IDLE 0x210a
#define SET_PROTOCOL 0x210b
/* HID descriptor types */
#define USB_DT_HID 0x21
#define USB_DT_REPORT 0x22
#define USB_DT_PHY 0x23
#define USB_MOUSE 1
#define USB_TABLET 2
#define USB_KEYBOARD 3
typedef struct USBMouseState {
int dx, dy, dz, buttons_state;
int x, y;
int mouse_grabbed;
QEMUPutMouseEntry *eh_entry;
} USBMouseState;
typedef struct USBKeyboardState {
uint16_t modifiers;
uint8_t leds;
uint8_t key[16];
int keys;
} USBKeyboardState;
typedef struct USBHIDState {
USBDevice dev;
union {
USBMouseState ptr;
USBKeyboardState kbd;
};
int kind;
int protocol;
uint8_t idle;
int64_t next_idle_clock;
int changed;
void *datain_opaque;
void (*datain)(void *);
} USBHIDState;
enum {
STR_MANUFACTURER = 1,
STR_PRODUCT_MOUSE,
STR_PRODUCT_TABLET,
STR_PRODUCT_KEYBOARD,
STR_SERIALNUMBER,
STR_CONFIG_MOUSE,
STR_CONFIG_TABLET,
STR_CONFIG_KEYBOARD,
};
static const USBDescStrings desc_strings = {
[STR_MANUFACTURER] = "QEMU " QEMU_VERSION,
[STR_PRODUCT_MOUSE] = "QEMU USB Mouse",
[STR_PRODUCT_TABLET] = "QEMU USB Tablet",
[STR_PRODUCT_KEYBOARD] = "QEMU USB Keyboard",
[STR_SERIALNUMBER] = "42", /* == remote wakeup works */
[STR_CONFIG_MOUSE] = "HID Mouse",
[STR_CONFIG_TABLET] = "HID Tablet",
[STR_CONFIG_KEYBOARD] = "HID Keyboard",
};
static const USBDescIface desc_iface_mouse = {
.bInterfaceNumber = 0,
.bNumEndpoints = 1,
.bInterfaceClass = USB_CLASS_HID,
.bInterfaceSubClass = 0x01, /* boot */
.bInterfaceProtocol = 0x02,
.ndesc = 1,
.descs = (USBDescOther[]) {
{
/* HID descriptor */
.data = (uint8_t[]) {
0x09, /* u8 bLength */
USB_DT_HID, /* u8 bDescriptorType */
0x01, 0x00, /* u16 HID_class */
0x00, /* u8 country_code */
0x01, /* u8 num_descriptors */
USB_DT_REPORT, /* u8 type: Report */
52, 0, /* u16 len */
},
},
},
.eps = (USBDescEndpoint[]) {
{
.bEndpointAddress = USB_DIR_IN | 0x01,
.bmAttributes = USB_ENDPOINT_XFER_INT,
.wMaxPacketSize = 4,
.bInterval = 0x0a,
},
},
};
static const USBDescIface desc_iface_tablet = {
.bInterfaceNumber = 0,
.bNumEndpoints = 1,
.bInterfaceClass = USB_CLASS_HID,
.bInterfaceSubClass = 0x01, /* boot */
.bInterfaceProtocol = 0x02,
.ndesc = 1,
.descs = (USBDescOther[]) {
{
/* HID descriptor */
.data = (uint8_t[]) {
0x09, /* u8 bLength */
USB_DT_HID, /* u8 bDescriptorType */
0x01, 0x00, /* u16 HID_class */
0x00, /* u8 country_code */
0x01, /* u8 num_descriptors */
USB_DT_REPORT, /* u8 type: Report */
74, 0, /* u16 len */
},
},
},
.eps = (USBDescEndpoint[]) {
{
.bEndpointAddress = USB_DIR_IN | 0x01,
.bmAttributes = USB_ENDPOINT_XFER_INT,
.wMaxPacketSize = 8,
.bInterval = 0x0a,
},
},
};
static const USBDescIface desc_iface_keyboard = {
.bInterfaceNumber = 0,
.bNumEndpoints = 1,
.bInterfaceClass = USB_CLASS_HID,
.bInterfaceSubClass = 0x01, /* boot */
.bInterfaceProtocol = 0x01, /* keyboard */
.ndesc = 1,
.descs = (USBDescOther[]) {
{
/* HID descriptor */
.data = (uint8_t[]) {
0x09, /* u8 bLength */
USB_DT_HID, /* u8 bDescriptorType */
0x11, 0x01, /* u16 HID_class */
0x00, /* u8 country_code */
0x01, /* u8 num_descriptors */
USB_DT_REPORT, /* u8 type: Report */
0x3f, 0, /* u16 len */
},
},
},
.eps = (USBDescEndpoint[]) {
{
.bEndpointAddress = USB_DIR_IN | 0x01,
.bmAttributes = USB_ENDPOINT_XFER_INT,
.wMaxPacketSize = 8,
.bInterval = 0x0a,
},
},
};
static const USBDescDevice desc_device_mouse = {
.bcdUSB = 0x0100,
.bMaxPacketSize0 = 8,
.bNumConfigurations = 1,
.confs = (USBDescConfig[]) {
{
.bNumInterfaces = 1,
.bConfigurationValue = 1,
.iConfiguration = STR_CONFIG_MOUSE,
.bmAttributes = 0xa0,
.bMaxPower = 50,
.ifs = &desc_iface_mouse,
},
},
};
static const USBDescDevice desc_device_tablet = {
.bcdUSB = 0x0100,
.bMaxPacketSize0 = 8,
.bNumConfigurations = 1,
.confs = (USBDescConfig[]) {
{
.bNumInterfaces = 1,
.bConfigurationValue = 1,
.iConfiguration = STR_CONFIG_TABLET,
.bmAttributes = 0xa0,
.bMaxPower = 50,
.ifs = &desc_iface_tablet,
},
},
};
static const USBDescDevice desc_device_keyboard = {
.bcdUSB = 0x0100,
.bMaxPacketSize0 = 8,
.bNumConfigurations = 1,
.confs = (USBDescConfig[]) {
{
.bNumInterfaces = 1,
.bConfigurationValue = 1,
.iConfiguration = STR_CONFIG_KEYBOARD,
.bmAttributes = 0xa0,
.bMaxPower = 50,
.ifs = &desc_iface_keyboard,
},
},
};
static const USBDesc desc_mouse = {
.id = {
.idVendor = 0x0627,
.idProduct = 0x0001,
.bcdDevice = 0,
.iManufacturer = STR_MANUFACTURER,
.iProduct = STR_PRODUCT_MOUSE,
.iSerialNumber = STR_SERIALNUMBER,
},
.full = &desc_device_mouse,
.str = desc_strings,
};
static const USBDesc desc_tablet = {
.id = {
.idVendor = 0x0627,
.idProduct = 0x0001,
.bcdDevice = 0,
.iManufacturer = STR_MANUFACTURER,
.iProduct = STR_PRODUCT_TABLET,
.iSerialNumber = STR_SERIALNUMBER,
},
.full = &desc_device_tablet,
.str = desc_strings,
};
static const USBDesc desc_keyboard = {
.id = {
.idVendor = 0x0627,
.idProduct = 0x0001,
.bcdDevice = 0,
.iManufacturer = STR_MANUFACTURER,
.iProduct = STR_PRODUCT_KEYBOARD,
.iSerialNumber = STR_SERIALNUMBER,
},
.full = &desc_device_keyboard,
.str = desc_strings,
};
static const uint8_t qemu_mouse_hid_report_descriptor[] = {
0x05, 0x01, /* Usage Page (Generic Desktop) */
0x09, 0x02, /* Usage (Mouse) */
0xa1, 0x01, /* Collection (Application) */
0x09, 0x01, /* Usage (Pointer) */
0xa1, 0x00, /* Collection (Physical) */
0x05, 0x09, /* Usage Page (Button) */
0x19, 0x01, /* Usage Minimum (1) */
0x29, 0x03, /* Usage Maximum (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, Variable, Absolute) */
0x95, 0x01, /* Report Count (1) */
0x75, 0x05, /* Report Size (5) */
0x81, 0x01, /* Input (Constant) */
0x05, 0x01, /* Usage Page (Generic Desktop) */
0x09, 0x30, /* Usage (X) */
0x09, 0x31, /* Usage (Y) */
0x09, 0x38, /* Usage (Wheel) */
0x15, 0x81, /* Logical Minimum (-0x7f) */
0x25, 0x7f, /* Logical Maximum (0x7f) */
0x75, 0x08, /* Report Size (8) */
0x95, 0x03, /* Report Count (3) */
0x81, 0x06, /* Input (Data, Variable, Relative) */
0xc0, /* End Collection */
0xc0, /* End Collection */
};
static const uint8_t qemu_tablet_hid_report_descriptor[] = {
0x05, 0x01, /* Usage Page (Generic Desktop) */
0x09, 0x01, /* Usage (Pointer) */
0xa1, 0x01, /* Collection (Application) */
0x09, 0x01, /* Usage (Pointer) */
0xa1, 0x00, /* Collection (Physical) */
0x05, 0x09, /* Usage Page (Button) */
0x19, 0x01, /* Usage Minimum (1) */
0x29, 0x03, /* Usage Maximum (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, Variable, Absolute) */
0x95, 0x01, /* Report Count (1) */
0x75, 0x05, /* Report Size (5) */
0x81, 0x01, /* Input (Constant) */
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, 0xff, 0x7f, /* Physical Maximum (0x7fff) */
0x75, 0x10, /* Report Size (16) */
0x95, 0x02, /* Report Count (2) */
0x81, 0x02, /* Input (Data, Variable, Absolute) */
0x05, 0x01, /* Usage Page (Generic Desktop) */
0x09, 0x38, /* Usage (Wheel) */
0x15, 0x81, /* Logical Minimum (-0x7f) */
0x25, 0x7f, /* Logical Maximum (0x7f) */
0x35, 0x00, /* Physical Minimum (same as logical) */
0x45, 0x00, /* Physical Maximum (same as logical) */
0x75, 0x08, /* Report Size (8) */
0x95, 0x01, /* Report Count (1) */
0x81, 0x06, /* Input (Data, Variable, Relative) */
0xc0, /* End Collection */
0xc0, /* End Collection */
};
static const uint8_t qemu_keyboard_hid_report_descriptor[] = {
0x05, 0x01, /* Usage Page (Generic Desktop) */
0x09, 0x06, /* Usage (Keyboard) */
0xa1, 0x01, /* Collection (Application) */
0x75, 0x01, /* Report Size (1) */
0x95, 0x08, /* Report Count (8) */
0x05, 0x07, /* Usage Page (Key Codes) */
0x19, 0xe0, /* Usage Minimum (224) */
0x29, 0xe7, /* Usage Maximum (231) */
0x15, 0x00, /* Logical Minimum (0) */
0x25, 0x01, /* Logical Maximum (1) */
0x81, 0x02, /* Input (Data, Variable, Absolute) */
0x95, 0x01, /* Report Count (1) */
0x75, 0x08, /* Report Size (8) */
0x81, 0x01, /* Input (Constant) */
0x95, 0x05, /* Report Count (5) */
0x75, 0x01, /* Report Size (1) */
0x05, 0x08, /* Usage Page (LEDs) */
0x19, 0x01, /* Usage Minimum (1) */
0x29, 0x05, /* Usage Maximum (5) */
0x91, 0x02, /* Output (Data, Variable, Absolute) */
0x95, 0x01, /* Report Count (1) */
0x75, 0x03, /* Report Size (3) */
0x91, 0x01, /* Output (Constant) */
0x95, 0x06, /* Report Count (6) */
0x75, 0x08, /* Report Size (8) */
0x15, 0x00, /* Logical Minimum (0) */
0x25, 0xff, /* Logical Maximum (255) */
0x05, 0x07, /* Usage Page (Key Codes) */
0x19, 0x00, /* Usage Minimum (0) */
0x29, 0xff, /* Usage Maximum (255) */
0x81, 0x00, /* Input (Data, Array) */
0xc0, /* End Collection */
};
#define USB_HID_USAGE_ERROR_ROLLOVER 0x01
#define USB_HID_USAGE_POSTFAIL 0x02
#define USB_HID_USAGE_ERROR_UNDEFINED 0x03
/* Indices are QEMU keycodes, values are from HID Usage Table. Indices
* above 0x80 are for keys that come after 0xe0 or 0xe1+0x1d or 0xe1+0x9d. */
static const uint8_t usb_hid_usage_keys[0x100] = {
0x00, 0x29, 0x1e, 0x1f, 0x20, 0x21, 0x22, 0x23,
0x24, 0x25, 0x26, 0x27, 0x2d, 0x2e, 0x2a, 0x2b,
0x14, 0x1a, 0x08, 0x15, 0x17, 0x1c, 0x18, 0x0c,
0x12, 0x13, 0x2f, 0x30, 0x28, 0xe0, 0x04, 0x16,
0x07, 0x09, 0x0a, 0x0b, 0x0d, 0x0e, 0x0f, 0x33,
0x34, 0x35, 0xe1, 0x31, 0x1d, 0x1b, 0x06, 0x19,
0x05, 0x11, 0x10, 0x36, 0x37, 0x38, 0xe5, 0x55,
0xe2, 0x2c, 0x32, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e,
0x3f, 0x40, 0x41, 0x42, 0x43, 0x53, 0x47, 0x5f,
0x60, 0x61, 0x56, 0x5c, 0x5d, 0x5e, 0x57, 0x59,
0x5a, 0x5b, 0x62, 0x63, 0x00, 0x00, 0x00, 0x44,
0x45, 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e,
0xe8, 0xe9, 0x71, 0x72, 0x73, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x85, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0xe3, 0xe7, 0x65,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x58, 0xe4, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x54, 0x00, 0x46,
0xe6, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x48, 0x00, 0x4a,
0x52, 0x4b, 0x00, 0x50, 0x00, 0x4f, 0x00, 0x4d,
0x51, 0x4e, 0x49, 0x4c, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
};
static void usb_hid_changed(USBHIDState *hs)
{
hs->changed = 1;
if (hs->datain)
hs->datain(hs->datain_opaque);
usb_wakeup(&hs->dev);
}
static void usb_mouse_event(void *opaque,
int dx1, int dy1, int dz1, int buttons_state)
{
USBHIDState *hs = opaque;
USBMouseState *s = &hs->ptr;
s->dx += dx1;
s->dy += dy1;
s->dz += dz1;
s->buttons_state = buttons_state;
usb_hid_changed(hs);
}
static void usb_tablet_event(void *opaque,
int x, int y, int dz, int buttons_state)
{
USBHIDState *hs = opaque;
USBMouseState *s = &hs->ptr;
s->x = x;
s->y = y;
s->dz += dz;
s->buttons_state = buttons_state;
usb_hid_changed(hs);
}
static void usb_keyboard_event(void *opaque, int keycode)
{
USBHIDState *hs = opaque;
USBKeyboardState *s = &hs->kbd;
uint8_t hid_code, key;
int i;
key = keycode & 0x7f;
hid_code = usb_hid_usage_keys[key | ((s->modifiers >> 1) & (1 << 7))];
s->modifiers &= ~(1 << 8);
switch (hid_code) {
case 0x00:
return;
case 0xe0:
if (s->modifiers & (1 << 9)) {
s->modifiers ^= 3 << 8;
return;
}
case 0xe1 ... 0xe7:
if (keycode & (1 << 7)) {
s->modifiers &= ~(1 << (hid_code & 0x0f));
return;
}
case 0xe8 ... 0xef:
s->modifiers |= 1 << (hid_code & 0x0f);
return;
}
if (keycode & (1 << 7)) {
for (i = s->keys - 1; i >= 0; i --)
if (s->key[i] == hid_code) {
s->key[i] = s->key[-- s->keys];
s->key[s->keys] = 0x00;
usb_hid_changed(hs);
break;
}
if (i < 0)
return;
} else {
for (i = s->keys - 1; i >= 0; i --)
if (s->key[i] == hid_code)
break;
if (i < 0) {
if (s->keys < sizeof(s->key))
s->key[s->keys ++] = hid_code;
} else
return;
}
usb_hid_changed(hs);
}
static inline int int_clamp(int val, int vmin, int vmax)
{
if (val < vmin)
return vmin;
else if (val > vmax)
return vmax;
else
return val;
}
static int usb_mouse_poll(USBHIDState *hs, uint8_t *buf, int len)
{
int dx, dy, dz, b, l;
USBMouseState *s = &hs->ptr;
if (!s->mouse_grabbed) {
qemu_activate_mouse_event_handler(s->eh_entry);
s->mouse_grabbed = 1;
}
dx = int_clamp(s->dx, -127, 127);
dy = int_clamp(s->dy, -127, 127);
dz = int_clamp(s->dz, -127, 127);
s->dx -= dx;
s->dy -= dy;
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;
l = 0;
if (len > l)
buf[l ++] = b;
if (len > l)
buf[l ++] = dx;
if (len > l)
buf[l ++] = dy;
if (len > l)
buf[l ++] = dz;
return l;
}
static int usb_tablet_poll(USBHIDState *hs, uint8_t *buf, int len)
{
int dz, b, l;
USBMouseState *s = &hs->ptr;
if (!s->mouse_grabbed) {
qemu_activate_mouse_event_handler(s->eh_entry);
s->mouse_grabbed = 1;
}
dz = int_clamp(s->dz, -127, 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 int usb_keyboard_poll(USBKeyboardState *s, uint8_t *buf, int len)
{
if (len < 2)
return 0;
buf[0] = s->modifiers & 0xff;
buf[1] = 0;
if (s->keys > 6)
memset(buf + 2, USB_HID_USAGE_ERROR_ROLLOVER, MIN(8, len) - 2);
else
memcpy(buf + 2, s->key, MIN(8, len) - 2);
return MIN(8, len);
}
static int usb_keyboard_write(USBKeyboardState *s, uint8_t *buf, int len)
{
if (len > 0) {
int ledstate = 0;
/* 0x01: Num Lock LED
* 0x02: Caps Lock LED
* 0x04: Scroll Lock LED
* 0x08: Compose LED
* 0x10: Kana LED */
s->leds = buf[0];
if (s->leds & 0x04)
ledstate |= QEMU_SCROLL_LOCK_LED;
if (s->leds & 0x01)
ledstate |= QEMU_NUM_LOCK_LED;
if (s->leds & 0x02)
ledstate |= QEMU_CAPS_LOCK_LED;
kbd_put_ledstate(ledstate);
}
return 0;
}
static void usb_mouse_handle_reset(USBDevice *dev)
{
USBHIDState *s = (USBHIDState *)dev;
s->ptr.dx = 0;
s->ptr.dy = 0;
s->ptr.dz = 0;
s->ptr.x = 0;
s->ptr.y = 0;
s->ptr.buttons_state = 0;
s->protocol = 1;
}
static void usb_keyboard_handle_reset(USBDevice *dev)
{
USBHIDState *s = (USBHIDState *)dev;
qemu_add_kbd_event_handler(usb_keyboard_event, s);
s->protocol = 1;
}
static void usb_hid_set_next_idle(USBHIDState *s, int64_t curtime)
{
s->next_idle_clock = curtime + (get_ticks_per_sec() * s->idle * 4) / 1000;
}
static int usb_hid_handle_control(USBDevice *dev, int request, int value,
int index, int length, uint8_t *data)
{
USBHIDState *s = (USBHIDState *)dev;
int ret;
ret = usb_desc_handle_control(dev, request, value, index, length, data);
if (ret >= 0) {
return ret;
}
ret = 0;
switch(request) {
case DeviceRequest | USB_REQ_GET_INTERFACE:
data[0] = 0;
ret = 1;
break;
case DeviceOutRequest | USB_REQ_SET_INTERFACE:
ret = 0;
break;
/* hid specific requests */
case InterfaceRequest | USB_REQ_GET_DESCRIPTOR:
switch(value >> 8) {
case 0x22:
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);
} else if (s->kind == USB_KEYBOARD) {
memcpy(data, qemu_keyboard_hid_report_descriptor,
sizeof(qemu_keyboard_hid_report_descriptor));
ret = sizeof(qemu_keyboard_hid_report_descriptor);
}
break;
default:
goto fail;
}
break;
case GET_REPORT:
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);
else if (s->kind == USB_KEYBOARD)
ret = usb_keyboard_poll(&s->kbd, data, length);
break;
case SET_REPORT:
if (s->kind == USB_KEYBOARD)
ret = usb_keyboard_write(&s->kbd, data, length);
else
goto fail;
break;
case GET_PROTOCOL:
if (s->kind != USB_KEYBOARD)
goto fail;
ret = 1;
data[0] = s->protocol;
break;
case SET_PROTOCOL:
if (s->kind != USB_KEYBOARD)
goto fail;
ret = 0;
s->protocol = value;
break;
case GET_IDLE:
ret = 1;
data[0] = s->idle;
break;
case SET_IDLE:
s->idle = (uint8_t) (value >> 8);
usb_hid_set_next_idle(s, qemu_get_clock(vm_clock));
ret = 0;
break;
default:
fail:
ret = USB_RET_STALL;
break;
}
return ret;
}
static int usb_hid_handle_data(USBDevice *dev, USBPacket *p)
{
USBHIDState *s = (USBHIDState *)dev;
int ret = 0;
switch(p->pid) {
case USB_TOKEN_IN:
if (p->devep == 1) {
int64_t curtime = qemu_get_clock(vm_clock);
if (!s->changed && (!s->idle || s->next_idle_clock - curtime > 0))
return USB_RET_NAK;
usb_hid_set_next_idle(s, curtime);
s->changed = 0;
if (s->kind == USB_MOUSE)
ret = usb_mouse_poll(s, p->data, p->len);
else if (s->kind == USB_TABLET)
ret = usb_tablet_poll(s, p->data, p->len);
else if (s->kind == USB_KEYBOARD)
ret = usb_keyboard_poll(&s->kbd, p->data, p->len);
} else {
goto fail;
}
break;
case USB_TOKEN_OUT:
default:
fail:
ret = USB_RET_STALL;
break;
}
return ret;
}
static void usb_hid_handle_destroy(USBDevice *dev)
{
USBHIDState *s = (USBHIDState *)dev;
switch(s->kind) {
case USB_KEYBOARD:
qemu_remove_kbd_event_handler();
break;
default:
qemu_remove_mouse_event_handler(s->ptr.eh_entry);
}
}
static int usb_hid_initfn(USBDevice *dev, int kind)
{
USBHIDState *s = DO_UPCAST(USBHIDState, dev, dev);
usb_desc_init(dev);
s->kind = kind;
if (s->kind == USB_MOUSE) {
s->ptr.eh_entry = qemu_add_mouse_event_handler(usb_mouse_event, s,
0, "QEMU USB Mouse");
} else if (s->kind == USB_TABLET) {
s->ptr.eh_entry = qemu_add_mouse_event_handler(usb_tablet_event, s,
1, "QEMU USB Tablet");
}
/* Force poll routine to be run and grab input the first time. */
s->changed = 1;
return 0;
}
static int usb_tablet_initfn(USBDevice *dev)
{
return usb_hid_initfn(dev, USB_TABLET);
}
static int usb_mouse_initfn(USBDevice *dev)
{
return usb_hid_initfn(dev, USB_MOUSE);
}
static int usb_keyboard_initfn(USBDevice *dev)
{
return usb_hid_initfn(dev, USB_KEYBOARD);
}
void usb_hid_datain_cb(USBDevice *dev, void *opaque, void (*datain)(void *))
{
USBHIDState *s = (USBHIDState *)dev;
s->datain_opaque = opaque;
s->datain = datain;
}
static struct USBDeviceInfo hid_info[] = {
{
.product_desc = "QEMU USB Tablet",
.qdev.name = "usb-tablet",
.usbdevice_name = "tablet",
.qdev.size = sizeof(USBHIDState),
.usb_desc = &desc_tablet,
.init = usb_tablet_initfn,
.handle_packet = usb_generic_handle_packet,
.handle_reset = usb_mouse_handle_reset,
.handle_control = usb_hid_handle_control,
.handle_data = usb_hid_handle_data,
.handle_destroy = usb_hid_handle_destroy,
},{
.product_desc = "QEMU USB Mouse",
.qdev.name = "usb-mouse",
.usbdevice_name = "mouse",
.qdev.size = sizeof(USBHIDState),
.usb_desc = &desc_mouse,
.init = usb_mouse_initfn,
.handle_packet = usb_generic_handle_packet,
.handle_reset = usb_mouse_handle_reset,
.handle_control = usb_hid_handle_control,
.handle_data = usb_hid_handle_data,
.handle_destroy = usb_hid_handle_destroy,
},{
.product_desc = "QEMU USB Keyboard",
.qdev.name = "usb-kbd",
.usbdevice_name = "keyboard",
.qdev.size = sizeof(USBHIDState),
.usb_desc = &desc_keyboard,
.init = usb_keyboard_initfn,
.handle_packet = usb_generic_handle_packet,
.handle_reset = usb_keyboard_handle_reset,
.handle_control = usb_hid_handle_control,
.handle_data = usb_hid_handle_data,
.handle_destroy = usb_hid_handle_destroy,
},{
/* end of list */
}
};
static void usb_hid_register_devices(void)
{
usb_qdev_register_many(hid_info);
}
device_init(usb_hid_register_devices)
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