From 6caf3ac6131f4981c722a48d57cb4a5af3a18675 Mon Sep 17 00:00:00 2001 From: David Gibson Date: Thu, 8 Jun 2017 22:18:34 +1000 Subject: [PATCH] spapr: Uniform DRC reset paths DRC objects have a regular device reset method. However, it only gets called in the usual way for PCI DRCs. Because of where CPU and LMB DRCs are in the QOM tree, their device reset method isn't automatically called. So, the machine manually registers reset handlers to call device_reset(). This patch removes the device reset method, and instead always explicitly registers the reset handler from realize(). This means the callers don't have to worry about the two cases, and we always get proper resets. Signed-off-by: David Gibson Reviewed-by: Greg Kurz Reviewed-by: Laurent Vivier --- hw/ppc/spapr.c | 31 ++++--------------------------- hw/ppc/spapr_drc.c | 6 +++--- 2 files changed, 7 insertions(+), 30 deletions(-) diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c index 5acfb47be9..4fa982d58a 100644 --- a/hw/ppc/spapr.c +++ b/hw/ppc/spapr.c @@ -1967,24 +1967,6 @@ static void spapr_boot_set(void *opaque, const char *boot_device, machine->boot_order = g_strdup(boot_device); } -/* - * Reset routine for LMB DR devices. - * - * Unlike PCI DR devices, LMB DR devices explicitly register this reset - * routine. Reset for PCI DR devices will be handled by PHB reset routine - * when it walks all its children devices. LMB devices reset occurs - * as part of ppc_spapr_reset(). - */ -static void spapr_drc_reset(void *opaque) -{ - sPAPRDRConnector *drc = opaque; - DeviceState *d = DEVICE(drc); - - if (d) { - device_reset(d); - } -} - static void spapr_create_lmb_dr_connectors(sPAPRMachineState *spapr) { MachineState *machine = MACHINE(spapr); @@ -1993,13 +1975,11 @@ static void spapr_create_lmb_dr_connectors(sPAPRMachineState *spapr) int i; for (i = 0; i < nr_lmbs; i++) { - sPAPRDRConnector *drc; uint64_t addr; addr = i * lmb_size + spapr->hotplug_memory.base; - drc = spapr_dr_connector_new(OBJECT(spapr), TYPE_SPAPR_DRC_LMB, - addr/lmb_size); - qemu_register_reset(spapr_drc_reset, drc); + spapr_dr_connector_new(OBJECT(spapr), TYPE_SPAPR_DRC_LMB, + addr / lmb_size); } } @@ -2093,11 +2073,8 @@ static void spapr_init_cpus(sPAPRMachineState *spapr) int core_id = i * smp_threads; if (mc->has_hotpluggable_cpus) { - sPAPRDRConnector *drc = - spapr_dr_connector_new(OBJECT(spapr), TYPE_SPAPR_DRC_CPU, - (core_id / smp_threads) * smt); - - qemu_register_reset(spapr_drc_reset, drc); + spapr_dr_connector_new(OBJECT(spapr), TYPE_SPAPR_DRC_CPU, + (core_id / smp_threads) * smt); } if (i < boot_cores_nr) { diff --git a/hw/ppc/spapr_drc.c b/hw/ppc/spapr_drc.c index 22d4d8187e..c831aa31b5 100644 --- a/hw/ppc/spapr_drc.c +++ b/hw/ppc/spapr_drc.c @@ -426,9 +426,9 @@ static bool release_pending(sPAPRDRConnector *drc) return drc->awaiting_release; } -static void reset(DeviceState *d) +static void drc_reset(void *opaque) { - sPAPRDRConnector *drc = SPAPR_DR_CONNECTOR(d); + sPAPRDRConnector *drc = SPAPR_DR_CONNECTOR(opaque); trace_spapr_drc_reset(spapr_drc_index(drc)); @@ -538,6 +538,7 @@ static void realize(DeviceState *d, Error **errp) g_free(child_name); vmstate_register(DEVICE(drc), spapr_drc_index(drc), &vmstate_spapr_drc, drc); + qemu_register_reset(drc_reset, drc); trace_spapr_drc_realize_complete(spapr_drc_index(drc)); } @@ -596,7 +597,6 @@ static void spapr_dr_connector_class_init(ObjectClass *k, void *data) DeviceClass *dk = DEVICE_CLASS(k); sPAPRDRConnectorClass *drck = SPAPR_DR_CONNECTOR_CLASS(k); - dk->reset = reset; dk->realize = realize; dk->unrealize = unrealize; drck->release_pending = release_pending;