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Implement HID idle mode (avoids flooding guest with useless updates).

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Fix UHCI NACK bug.


git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@3157 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
pbrook 2007-09-09 21:16:01 +00:00
parent ead9360e2f
commit 117b3ae6e6
2 changed files with 33 additions and 12 deletions
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40
hw/usb-hid.c
View File

@ -64,6 +64,7 @@ typedef struct USBHIDState {
int kind;
int protocol;
int idle;
int changed;
} USBHIDState;
/* mostly the same values as the Bochs USB Mouse device */
@ -382,28 +383,33 @@ static const uint8_t usb_hid_usage_keys[0x100] = {
static void usb_mouse_event(void *opaque,
int dx1, int dy1, int dz1, int buttons_state)
{
USBMouseState *s = opaque;
USBHIDState *hs = opaque;
USBMouseState *s = &hs->ptr;
s->dx += dx1;
s->dy += dy1;
s->dz += dz1;
s->buttons_state = buttons_state;
hs->changed = 1;
}
static void usb_tablet_event(void *opaque,
int x, int y, int dz, int buttons_state)
{
USBMouseState *s = opaque;
USBHIDState *hs = opaque;
USBMouseState *s = &hs->ptr;
s->x = x;
s->y = y;
s->dz += dz;
s->buttons_state = buttons_state;
hs->changed = 1;
}
static void usb_keyboard_event(void *opaque, int keycode)
{
USBKeyboardState *s = opaque;
USBHIDState *hs = opaque;
USBKeyboardState *s = &hs->kbd;
uint8_t hid_code, key;
int i;
@ -411,6 +417,8 @@ static void usb_keyboard_event(void *opaque, int keycode)
hid_code = usb_hid_usage_keys[key | ((s->modifiers >> 1) & (1 << 7))];
s->modifiers &= ~(1 << 8);
hs->changed = 1;
switch (hid_code) {
case 0x00:
return;
@ -456,12 +464,13 @@ static inline int int_clamp(int val, int vmin, int vmax)
return val;
}
static int usb_mouse_poll(USBMouseState *s, uint8_t *buf, int len)
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) {
s->eh_entry = qemu_add_mouse_event_handler(usb_mouse_event, s,
s->eh_entry = qemu_add_mouse_event_handler(usb_mouse_event, hs,
0, "QEMU USB Mouse");
s->mouse_grabbed = 1;
}
@ -493,12 +502,13 @@ 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)
static int usb_tablet_poll(USBHIDState *hs, uint8_t *buf, int len)
{
int dz, b, l;
USBMouseState *s = &hs->ptr;
if (!s->mouse_grabbed) {
s->eh_entry = qemu_add_mouse_event_handler(usb_tablet_event, s,
s->eh_entry = qemu_add_mouse_event_handler(usb_tablet_event, hs,
1, "QEMU USB Tablet");
s->mouse_grabbed = 1;
}
@ -711,9 +721,9 @@ static int usb_hid_handle_control(USBDevice *dev, int request, int value,
break;
case GET_REPORT:
if (s->kind == USB_MOUSE)
ret = usb_mouse_poll(&s->ptr, data, length);
ret = usb_mouse_poll(s, data, length);
else if (s->kind == USB_TABLET)
ret = usb_tablet_poll(&s->ptr, data, length);
ret = usb_tablet_poll(s, data, length);
else if (s->kind == USB_KEYBOARD)
ret = usb_keyboard_poll(&s->kbd, data, length);
break;
@ -759,10 +769,14 @@ static int usb_hid_handle_data(USBDevice *dev, USBPacket *p)
switch(p->pid) {
case USB_TOKEN_IN:
if (p->devep == 1) {
/* TODO: Implement finite idle delays. */
if (!(s->changed || s->idle))
return USB_RET_NAK;
s->changed = 0;
if (s->kind == USB_MOUSE)
ret = usb_mouse_poll(&s->ptr, p->data, p->len);
ret = usb_mouse_poll(s, p->data, p->len);
else if (s->kind == USB_TABLET)
ret = usb_tablet_poll(&s->ptr, p->data, p->len);
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 {
@ -803,6 +817,8 @@ USBDevice *usb_tablet_init(void)
s->dev.handle_data = usb_hid_handle_data;
s->dev.handle_destroy = usb_hid_handle_destroy;
s->kind = USB_TABLET;
/* Force poll routine to be run and grab input the first time. */
s->changed = 1;
pstrcpy(s->dev.devname, sizeof(s->dev.devname), "QEMU USB Tablet");
@ -824,6 +840,8 @@ USBDevice *usb_mouse_init(void)
s->dev.handle_data = usb_hid_handle_data;
s->dev.handle_destroy = usb_hid_handle_destroy;
s->kind = USB_MOUSE;
/* Force poll routine to be run and grab input the first time. */
s->changed = 1;
pstrcpy(s->dev.devname, sizeof(s->dev.devname), "QEMU USB Mouse");

5
hw/usb-uhci.c
View File

@ -526,7 +526,10 @@ static int uhci_handle_td(UHCIState *s, UHCI_TD *td, int *int_mask)
td->ctrl &= ~TD_CTRL_ACTIVE;
if (ret >= 0) {
td->ctrl = (td->ctrl & ~0x7ff) | ((len - 1) & 0x7ff);
td->ctrl &= ~TD_CTRL_ACTIVE;
/* The NAK bit may have been set by a previous frame, so clear it
here. The docs are somewhat unclear, but win2k relies on this
behavior. */
td->ctrl &= ~(TD_CTRL_ACTIVE | TD_CTRL_NAK);
if (pid == USB_TOKEN_IN &&
(td->ctrl & TD_CTRL_SPD) &&
len < max_len) {