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ehci: move async schedule to bottom half 

This way we can kick the async schedule independant from the
periodic frame timer.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2012-05-11 11:19:11 +02:00
parent ae0138a8ea
commit 0fb3e299bd
1 changed files with 10 additions and 1 deletions
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11
hw/usb/hcd-ehci.c
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@ -414,6 +414,7 @@ struct EHCIState {
* Internal states, shadow registers, etc
*/
QEMUTimer *frame_timer;
QEMUBH *async_bh;
int attach_poll_counter;
int astate; // Current state in asynchronous schedule
int pstate; // Current state in periodic schedule
@ -959,6 +960,7 @@ static void ehci_reset(void *opaque)
ehci_queues_rip_all(s, 0);
ehci_queues_rip_all(s, 1);
qemu_del_timer(s->frame_timer);
qemu_bh_cancel(s->async_bh);
}
static uint32_t ehci_mem_readb(void *ptr, target_phys_addr_t addr)
@ -1111,6 +1113,7 @@ static void ehci_mem_writel(void *ptr, target_phys_addr_t addr, uint32_t val)
if (!(val & USBCMD_RUNSTOP) && (s->usbcmd & USBCMD_RUNSTOP)) {
qemu_del_timer(s->frame_timer);
qemu_bh_cancel(s->async_bh);
ehci_queues_rip_all(s, 0);
ehci_queues_rip_all(s, 1);
ehci_set_usbsts(s, USBSTS_HALT);
@ -2290,11 +2293,16 @@ static void ehci_frame_timer(void *opaque)
/* Async is not inside loop since it executes everything it can once
* called
*/
ehci_advance_async_state(ehci);
qemu_bh_schedule(ehci->async_bh);
qemu_mod_timer(ehci->frame_timer, expire_time);
}
static void ehci_async_bh(void *opaque)
{
EHCIState *ehci = opaque;
ehci_advance_async_state(ehci);
}
static const MemoryRegionOps ehci_mem_ops = {
.old_mmio = {
@ -2430,6 +2438,7 @@ static int usb_ehci_initfn(PCIDevice *dev)
}
s->frame_timer = qemu_new_timer_ns(vm_clock, ehci_frame_timer, s);
s->async_bh = qemu_bh_new(ehci_async_bh, s);
QTAILQ_INIT(&s->aqueues);
QTAILQ_INIT(&s->pqueues);