From fa82e9c300df6f7b8bd44a26ac752c4ea5da02c1 Mon Sep 17 00:00:00 2001 From: Bernhard Kohl Date: Wed, 8 Dec 2010 15:59:55 +0100 Subject: [PATCH] wdt_i6300esb: register a reset function The device shall set its default hardware state after each reset. This includes that the timer is stopped which is especially important if the guest does a reboot independantly of a watchdog bite. I moved the initialization of the state variables completely from the init to the reset function which is called right after init during the first boot and afterwards during each reboot. Signed-off-by: Bernhard Kohl Signed-off-by: Blue Swirl --- hw/wdt_i6300esb.c | 39 +++++++++++++++++++++------------------ 1 file changed, 21 insertions(+), 18 deletions(-) diff --git a/hw/wdt_i6300esb.c b/hw/wdt_i6300esb.c index 09f2f58ad7..8443b41890 100644 --- a/hw/wdt_i6300esb.c +++ b/hw/wdt_i6300esb.c @@ -140,14 +140,26 @@ static void i6300esb_disable_timer(I6300State *d) qemu_del_timer(d->timer); } -static void i6300esb_reset(I6300State *d) +static void i6300esb_reset(DeviceState *dev) { - /* XXX We should probably reset other parts of the state here, - * but we should also reset our state on general machine reset - * too. For now just disable the timer so it doesn't fire - * again after the reboot. - */ + PCIDevice *pdev = DO_UPCAST(PCIDevice, qdev, dev); + I6300State *d = DO_UPCAST(I6300State, dev, pdev); + + i6300esb_debug("I6300State = %p\n", d); + i6300esb_disable_timer(d); + + d->reboot_enabled = 1; + d->clock_scale = CLOCK_SCALE_1KHZ; + d->int_type = INT_TYPE_IRQ; + d->free_run = 0; + d->locked = 0; + d->enabled = 0; + d->timer1_preload = 0xfffff; + d->timer2_preload = 0xfffff; + d->stage = 1; + d->unlock_state = 0; + d->previous_reboot_flag = 0; } /* This function is called when the watchdog expires. Note that @@ -181,7 +193,6 @@ static void i6300esb_timer_expired(void *vp) if (d->reboot_enabled) { d->previous_reboot_flag = 1; watchdog_perform_action(); /* This reboots, exits, etc */ - i6300esb_reset(d); } /* In "free running mode" we start stage 1 again. */ @@ -395,18 +406,9 @@ static int i6300esb_init(PCIDevice *dev) I6300State *d = DO_UPCAST(I6300State, dev, dev); uint8_t *pci_conf; - d->reboot_enabled = 1; - d->clock_scale = CLOCK_SCALE_1KHZ; - d->int_type = INT_TYPE_IRQ; - d->free_run = 0; - d->locked = 0; - d->enabled = 0; + i6300esb_debug("I6300State = %p\n", d); + d->timer = qemu_new_timer(vm_clock, i6300esb_timer_expired, d); - d->timer1_preload = 0xfffff; - d->timer2_preload = 0xfffff; - d->stage = 1; - d->unlock_state = 0; - d->previous_reboot_flag = 0; pci_conf = d->dev.config; pci_config_set_vendor_id(pci_conf, PCI_VENDOR_ID_INTEL); @@ -428,6 +430,7 @@ static PCIDeviceInfo i6300esb_info = { .qdev.name = "i6300esb", .qdev.size = sizeof(I6300State), .qdev.vmsd = &vmstate_i6300esb, + .qdev.reset = i6300esb_reset, .config_read = i6300esb_config_read, .config_write = i6300esb_config_write, .init = i6300esb_init,