I found that the QEMU USB keyboard support does not work properly with the Set_Idle command. Once a non-zero value is given to Set_Idle, then the keyboard reports an event on every poll - not based on the time issued in the Set_Idle command.
I changed the code (see patch below) and it works for me. I'm not that familiar with the qemu internals, so I'm not sure if this is the best way to implement this feature.
-Kevin
diff --git a/hw/usb-hid.c b/hw/usb-hid.c index 4f320d7..bf456bb 100644 --- a/hw/usb-hid.c +++ b/hw/usb-hid.c @@ -66,6 +66,7 @@ typedef struct USBHIDState { int kind; int protocol; uint8_t idle; + int64_t next_idle_clock; int changed; void *datain_opaque; void (*datain)(void *); @@ -630,6 +631,11 @@ static void usb_keyboard_handle_reset(USBDevice *dev) 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) { @@ -795,6 +801,7 @@ static int usb_hid_handle_control(USBDevice *dev, int request, int value, 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: @@ -813,9 +820,10 @@ 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)) + 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);
On 02/13/2010 05:32 PM, Kevin O'Connor wrote:
I found that the QEMU USB keyboard support does not work properly with the Set_Idle command. Once a non-zero value is given to Set_Idle, then the keyboard reports an event on every poll - not based on the time issued in the Set_Idle command.
I changed the code (see patch below) and it works for me. I'm not that familiar with the qemu internals, so I'm not sure if this is the best way to implement this feature.
-Kevin
Applied. Thanks.
Regards,
Anthony Liguori
diff --git a/hw/usb-hid.c b/hw/usb-hid.c index 4f320d7..bf456bb 100644 --- a/hw/usb-hid.c +++ b/hw/usb-hid.c @@ -66,6 +66,7 @@ typedef struct USBHIDState { int kind; int protocol; uint8_t idle;
- int64_t next_idle_clock; int changed; void *datain_opaque; void (*datain)(void *);
@@ -630,6 +631,11 @@ static void usb_keyboard_handle_reset(USBDevice *dev) 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) {
@@ -795,6 +801,7 @@ static int usb_hid_handle_control(USBDevice *dev, int request, int value, 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:@@ -813,9 +820,10 @@ 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))
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);
-
Anthony Liguori -
Kevin O'Connor