From d05393071ad4cb72ae69f77f9f61fc451251521f Mon Sep 17 00:00:00 2001 From: Gerd Hoffmann Date: Fri, 20 May 2011 22:08:44 +0200 Subject: [PATCH] usb-ehci: drop EXECUTING checks. The state machine doesn't stop in EXECUTING state any more when async packets are in flight, so the checks are not needed any more and can be dropped. Also kick out the check for the frame timer. As we don't stop & sleep any more on async packets this is obsolete. Signed-off-by: Gerd Hoffmann --- hw/usb-ehci.c | 32 ++------------------------------ 1 file changed, 2 insertions(+), 30 deletions(-) diff --git a/hw/usb-ehci.c b/hw/usb-ehci.c index 9051571..7471a2f 100644 --- a/hw/usb-ehci.c +++ b/hw/usb-ehci.c @@ -1437,17 +1437,6 @@ static int ehci_state_fetchentry(EHCIState *ehci, int async) int again = 0; uint32_t entry = ehci_get_fetch_addr(ehci, async); -#if EHCI_DEBUG == 0 - if (qemu_get_clock_ns(vm_clock) / 1000 >= ehci->frame_end_usec) { - if (async) { - DPRINTF("FETCHENTRY: FRAME timer elapsed, exit state machine\n"); - goto out; - } else { - DPRINTF("FETCHENTRY: WARNING " - "- frame timer elapsed during periodic\n"); - } - } -#endif if (entry < 0x1000) { DPRINTF("fetchentry: entry invalid (0x%08x)\n", entry); ehci_set_state(ehci, async, EST_ACTIVE); @@ -1952,12 +1941,6 @@ static void ehci_advance_async_state(EHCIState *ehci) } ehci_set_state(ehci, async, EST_WAITLISTHEAD); - /* fall through */ - - case EST_FETCHENTRY: - /* fall through */ - - case EST_EXECUTING: ehci_advance_state(ehci, async); break; @@ -2010,11 +1993,6 @@ static void ehci_advance_periodic_state(EHCIState *ehci) ehci_advance_state(ehci, async); break; - case EST_EXECUTING: - DPRINTF("PERIODIC state adv for executing\n"); - ehci_advance_state(ehci, async); - break; - default: /* this should only be due to a developer mistake */ fprintf(stderr, "ehci: Bad periodic state %d. " @@ -2063,11 +2041,7 @@ static void ehci_frame_timer(void *opaque) if (frames - i > 10) { skipped_frames++; } else { - // TODO could this cause periodic frames to get skipped if async - // active? - if (ehci_get_state(ehci, 1) != EST_EXECUTING) { - ehci_advance_periodic_state(ehci); - } + ehci_advance_periodic_state(ehci); } ehci->last_run_usec += FRAME_TIMER_USEC; @@ -2082,9 +2056,7 @@ static void ehci_frame_timer(void *opaque) /* Async is not inside loop since it executes everything it can once * called */ - if (ehci_get_state(ehci, 0) != EST_EXECUTING) { - ehci_advance_async_state(ehci); - } + ehci_advance_async_state(ehci); qemu_mod_timer(ehci->frame_timer, expire_time); } -- 2.7.4