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Re: [Qemu-devel] [PATCH v2 14/33] pc: use AcpiDeviceIfClass.send_event t
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From: |
Igor Mammedov |
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Subject: |
Re: [Qemu-devel] [PATCH v2 14/33] pc: use AcpiDeviceIfClass.send_event to issue GPE events |
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Date: |
Thu, 2 Jun 2016 13:29:07 +0200 |
On Thu, 2 Jun 2016 14:13:23 +0300
Marcel Apfelbaum <address@hidden> wrote:
> On 05/31/2016 01:01 PM, Igor Mammedov wrote:
> > it reduces number of args passed in handlers by 1 and
> > a number of used proxy wrappers saving ~20LOC.
> > Also it allows to make cpu/mem hotplug code more
> > universal as it would allow ARM to reuse it without
> > rewrite by providing its own send_event callback
> > to trigger events usiong GPIO instead of GPE
> > as fixed hadrware ACPI model doen't have GPE at all.
> >
> > Signed-off-by: Igor Mammedov <address@hidden>
> > ---
> > v2:
> > - make ACPI_SEND_EVENT macro a function
> > Marcel Apfelbaum <address@hidden>
> > ---
> > hw/acpi/cpu_hotplug.c | 5 ++---
> > hw/acpi/ich9.c | 33 ++++++++++++++++++++-------------
> > hw/acpi/memory_hotplug.c | 12 ++++--------
> > hw/acpi/pcihp.c | 10 ++++------
> > hw/acpi/piix4.c | 11 +++++------
> > hw/isa/lpc_ich9.c | 30 +++---------------------------
> > include/hw/acpi/cpu_hotplug.h | 3 ++-
> > include/hw/acpi/ich9.h | 9 +++++----
> > include/hw/acpi/memory_hotplug.h | 4 ++--
> > include/hw/acpi/pcihp.h | 5 +++--
> > 10 files changed, 50 insertions(+), 72 deletions(-)
> >
> > diff --git a/hw/acpi/cpu_hotplug.c b/hw/acpi/cpu_hotplug.c
> > index 9d71d2f..fe75bd9 100644
> > --- a/hw/acpi/cpu_hotplug.c
> > +++ b/hw/acpi/cpu_hotplug.c
> > @@ -62,15 +62,14 @@ static void acpi_set_cpu_present_bit(AcpiCpuHotplug *g,
> > CPUState *cpu,
> > g->sts[cpu_id / 8] |= (1 << (cpu_id % 8));
> > }
> >
> > -void legacy_acpi_cpu_plug_cb(ACPIREGS *ar, qemu_irq irq,
> > +void legacy_acpi_cpu_plug_cb(HotplugHandler *hotplug_dev,
> > AcpiCpuHotplug *g, DeviceState *dev, Error
> > **errp)
> > {
> > acpi_set_cpu_present_bit(g, CPU(dev), errp);
> > if (*errp != NULL) {
> > return;
> > }
> > -
> > - acpi_send_gpe_event(ar, irq, ACPI_CPU_HOTPLUG_STATUS);
> > + acpi_send_event(DEVICE(hotplug_dev), ACPI_CPU_HOTPLUG_STATUS);
>
>
> The patch looks good to me. I have only one question.
> Why do you cast hotplug_dev to DEVICE and not a the safer expected interface?
> Or even HotplugHandler
it's not HotplugHandler because acpi events in general
is not hotplug related.
I wouldn't say that casting to interface any more safer
than casting to DEVICE, I'm using DeviceState here because
it will save some call sites a trouble of casting to interface.
>
> Thanks,
> Marcel
>
> > }
> >
> > void legacy_acpi_cpu_hotplug_init(MemoryRegion *parent, Object *owner,
> > diff --git a/hw/acpi/ich9.c b/hw/acpi/ich9.c
> > index af340d0..853c9c4 100644
> > --- a/hw/acpi/ich9.c
> > +++ b/hw/acpi/ich9.c
> > @@ -430,40 +430,47 @@ void ich9_pm_add_properties(Object *obj,
> > ICH9LPCPMRegs *pm, Error **errp)
> > NULL);
> > }
> >
> > -void ich9_pm_device_plug_cb(ICH9LPCPMRegs *pm, DeviceState *dev, Error
> > **errp)
> > +void ich9_pm_device_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev,
> > + Error **errp)
> > {
> > - if (pm->acpi_memory_hotplug.is_enabled &&
> > + ICH9LPCState *lpc = ICH9_LPC_DEVICE(hotplug_dev);
> > +
> > + if (lpc->pm.acpi_memory_hotplug.is_enabled &&
> > object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
> > - acpi_memory_plug_cb(&pm->acpi_regs, pm->irq,
> > &pm->acpi_memory_hotplug,
> > + acpi_memory_plug_cb(hotplug_dev, &lpc->pm.acpi_memory_hotplug,
> > dev, errp);
> > } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
> > - legacy_acpi_cpu_plug_cb(&pm->acpi_regs, pm->irq,
> > - &pm->gpe_cpu, dev, errp);
> > + legacy_acpi_cpu_plug_cb(hotplug_dev, &lpc->pm.gpe_cpu, dev, errp);
> > } else {
> > error_setg(errp, "acpi: device plug request for not supported
> > device"
> > " type: %s", object_get_typename(OBJECT(dev)));
> > }
> > }
> >
> > -void ich9_pm_device_unplug_request_cb(ICH9LPCPMRegs *pm, DeviceState *dev,
> > - Error **errp)
> > +void ich9_pm_device_unplug_request_cb(HotplugHandler *hotplug_dev,
> > + DeviceState *dev, Error **errp)
> > {
> > - if (pm->acpi_memory_hotplug.is_enabled &&
> > + ICH9LPCState *lpc = ICH9_LPC_DEVICE(hotplug_dev);
> > +
> > + if (lpc->pm.acpi_memory_hotplug.is_enabled &&
> > object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
> > - acpi_memory_unplug_request_cb(&pm->acpi_regs, pm->irq,
> > - &pm->acpi_memory_hotplug, dev, errp);
> > + acpi_memory_unplug_request_cb(hotplug_dev,
> > + &lpc->pm.acpi_memory_hotplug, dev,
> > + errp);
> > } else {
> > error_setg(errp, "acpi: device unplug request for not supported
> > device"
> > " type: %s", object_get_typename(OBJECT(dev)));
> > }
> > }
> >
> > -void ich9_pm_device_unplug_cb(ICH9LPCPMRegs *pm, DeviceState *dev,
> > +void ich9_pm_device_unplug_cb(HotplugHandler *hotplug_dev, DeviceState
> > *dev,
> > Error **errp)
> > {
> > - if (pm->acpi_memory_hotplug.is_enabled &&
> > + ICH9LPCState *lpc = ICH9_LPC_DEVICE(hotplug_dev);
> > +
> > + if (lpc->pm.acpi_memory_hotplug.is_enabled &&
> > object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
> > - acpi_memory_unplug_cb(&pm->acpi_memory_hotplug, dev, errp);
> > + acpi_memory_unplug_cb(&lpc->pm.acpi_memory_hotplug, dev, errp);
> > } else {
> > error_setg(errp, "acpi: device unplug for not supported device"
> > " type: %s", object_get_typename(OBJECT(dev)));
> > diff --git a/hw/acpi/memory_hotplug.c b/hw/acpi/memory_hotplug.c
> > index f65a3a2..ec4e64b 100644
> > --- a/hw/acpi/memory_hotplug.c
> > +++ b/hw/acpi/memory_hotplug.c
> > @@ -228,7 +228,7 @@ acpi_memory_slot_status(MemHotplugState *mem_st,
> > return &mem_st->devs[slot];
> > }
> >
> > -void acpi_memory_plug_cb(ACPIREGS *ar, qemu_irq irq, MemHotplugState
> > *mem_st,
> > +void acpi_memory_plug_cb(HotplugHandler *hotplug_dev, MemHotplugState
> > *mem_st,
> > DeviceState *dev, Error **errp)
> > {
> > MemStatus *mdev;
> > @@ -247,13 +247,11 @@ void acpi_memory_plug_cb(ACPIREGS *ar, qemu_irq irq,
> > MemHotplugState *mem_st,
> > mdev->is_enabled = true;
> > if (dev->hotplugged) {
> > mdev->is_inserting = true;
> > -
> > - /* do ACPI magic */
> > - acpi_send_gpe_event(ar, irq, ACPI_MEMORY_HOTPLUG_STATUS);
> > + acpi_send_event(DEVICE(hotplug_dev), ACPI_MEMORY_HOTPLUG_STATUS);
> > }
> > }
> >
> > -void acpi_memory_unplug_request_cb(ACPIREGS *ar, qemu_irq irq,
> > +void acpi_memory_unplug_request_cb(HotplugHandler *hotplug_dev,
> > MemHotplugState *mem_st,
> > DeviceState *dev, Error **errp)
> > {
> > @@ -265,9 +263,7 @@ void acpi_memory_unplug_request_cb(ACPIREGS *ar,
> > qemu_irq irq,
> > }
> >
> > mdev->is_removing = true;
> > -
> > - /* Do ACPI magic */
> > - acpi_send_gpe_event(ar, irq, ACPI_MEMORY_HOTPLUG_STATUS);
> > + acpi_send_event(DEVICE(hotplug_dev), ACPI_MEMORY_HOTPLUG_STATUS);
> > }
> >
> > void acpi_memory_unplug_cb(MemHotplugState *mem_st,
> > diff --git a/hw/acpi/pcihp.c b/hw/acpi/pcihp.c
> > index 71f4c4e..d957d1e 100644
> > --- a/hw/acpi/pcihp.c
> > +++ b/hw/acpi/pcihp.c
> > @@ -182,7 +182,7 @@ void acpi_pcihp_reset(AcpiPciHpState *s)
> > acpi_pcihp_update(s);
> > }
> >
> > -void acpi_pcihp_device_plug_cb(ACPIREGS *ar, qemu_irq irq, AcpiPciHpState
> > *s,
> > +void acpi_pcihp_device_plug_cb(HotplugHandler *hotplug_dev, AcpiPciHpState
> > *s,
> > DeviceState *dev, Error **errp)
> > {
> > PCIDevice *pdev = PCI_DEVICE(dev);
> > @@ -202,11 +202,10 @@ void acpi_pcihp_device_plug_cb(ACPIREGS *ar, qemu_irq
> > irq, AcpiPciHpState *s,
> > }
> >
> > s->acpi_pcihp_pci_status[bsel].up |= (1U << slot);
> > -
> > - acpi_send_gpe_event(ar, irq, ACPI_PCI_HOTPLUG_STATUS);
> > + acpi_send_event(DEVICE(hotplug_dev), ACPI_PCI_HOTPLUG_STATUS);
> > }
> >
> > -void acpi_pcihp_device_unplug_cb(ACPIREGS *ar, qemu_irq irq,
> > AcpiPciHpState *s,
> > +void acpi_pcihp_device_unplug_cb(HotplugHandler *hotplug_dev,
> > AcpiPciHpState *s,
> > DeviceState *dev, Error **errp)
> > {
> > PCIDevice *pdev = PCI_DEVICE(dev);
> > @@ -219,8 +218,7 @@ void acpi_pcihp_device_unplug_cb(ACPIREGS *ar, qemu_irq
> > irq, AcpiPciHpState *s,
> > }
> >
> > s->acpi_pcihp_pci_status[bsel].down |= (1U << slot);
> > -
> > - acpi_send_gpe_event(ar, irq, ACPI_PCI_HOTPLUG_STATUS);
> > + acpi_send_event(DEVICE(hotplug_dev), ACPI_PCI_HOTPLUG_STATUS);
> > }
> >
> > static uint64_t pci_read(void *opaque, hwaddr addr, unsigned int size)
> > diff --git a/hw/acpi/piix4.c b/hw/acpi/piix4.c
> > index 5b4fcb5..c48cb1b 100644
> > --- a/hw/acpi/piix4.c
> > +++ b/hw/acpi/piix4.c
> > @@ -348,12 +348,11 @@ static void piix4_device_plug_cb(HotplugHandler
> > *hotplug_dev,
> >
> > if (s->acpi_memory_hotplug.is_enabled &&
> > object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
> > - acpi_memory_plug_cb(&s->ar, s->irq, &s->acpi_memory_hotplug, dev,
> > errp);
> > + acpi_memory_plug_cb(hotplug_dev, &s->acpi_memory_hotplug, dev,
> > errp);
> > } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
> > - acpi_pcihp_device_plug_cb(&s->ar, s->irq, &s->acpi_pci_hotplug,
> > dev,
> > - errp);
> > + acpi_pcihp_device_plug_cb(hotplug_dev, &s->acpi_pci_hotplug, dev,
> > errp);
> > } else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
> > - legacy_acpi_cpu_plug_cb(&s->ar, s->irq, &s->gpe_cpu, dev, errp);
> > + legacy_acpi_cpu_plug_cb(hotplug_dev, &s->gpe_cpu, dev, errp);
> > } else {
> > error_setg(errp, "acpi: device plug request for not supported
> > device"
> > " type: %s", object_get_typename(OBJECT(dev)));
> > @@ -367,10 +366,10 @@ static void
> > piix4_device_unplug_request_cb(HotplugHandler *hotplug_dev,
> >
> > if (s->acpi_memory_hotplug.is_enabled &&
> > object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
> > - acpi_memory_unplug_request_cb(&s->ar, s->irq,
> > &s->acpi_memory_hotplug,
> > + acpi_memory_unplug_request_cb(hotplug_dev, &s->acpi_memory_hotplug,
> > dev, errp);
> > } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
> > - acpi_pcihp_device_unplug_cb(&s->ar, s->irq, &s->acpi_pci_hotplug,
> > dev,
> > + acpi_pcihp_device_unplug_cb(hotplug_dev, &s->acpi_pci_hotplug, dev,
> > errp);
> > } else {
> > error_setg(errp, "acpi: device unplug request for not supported
> > device"
> > diff --git a/hw/isa/lpc_ich9.c b/hw/isa/lpc_ich9.c
> > index 72d0781..2a2d52e 100644
> > --- a/hw/isa/lpc_ich9.c
> > +++ b/hw/isa/lpc_ich9.c
> > @@ -637,30 +637,6 @@ static void ich9_lpc_realize(PCIDevice *d, Error
> > **errp)
> > 1);
> > }
> >
> > -static void ich9_device_plug_cb(HotplugHandler *hotplug_dev,
> > - DeviceState *dev, Error **errp)
> > -{
> > - ICH9LPCState *lpc = ICH9_LPC_DEVICE(hotplug_dev);
> > -
> > - ich9_pm_device_plug_cb(&lpc->pm, dev, errp);
> > -}
> > -
> > -static void ich9_device_unplug_request_cb(HotplugHandler *hotplug_dev,
> > - DeviceState *dev, Error **errp)
> > -{
> > - ICH9LPCState *lpc = ICH9_LPC_DEVICE(hotplug_dev);
> > -
> > - ich9_pm_device_unplug_request_cb(&lpc->pm, dev, errp);
> > -}
> > -
> > -static void ich9_device_unplug_cb(HotplugHandler *hotplug_dev,
> > - DeviceState *dev, Error **errp)
> > -{
> > - ICH9LPCState *lpc = ICH9_LPC_DEVICE(hotplug_dev);
> > -
> > - ich9_pm_device_unplug_cb(&lpc->pm, dev, errp);
> > -}
> > -
> > static bool ich9_rst_cnt_needed(void *opaque)
> > {
> > ICH9LPCState *lpc = opaque;
> > @@ -733,9 +709,9 @@ static void ich9_lpc_class_init(ObjectClass *klass,
> > void *data)
> > * pc_q35_init()
> > */
> > dc->cannot_instantiate_with_device_add_yet = true;
> > - hc->plug = ich9_device_plug_cb;
> > - hc->unplug_request = ich9_device_unplug_request_cb;
> > - hc->unplug = ich9_device_unplug_cb;
> > + hc->plug = ich9_pm_device_plug_cb;
> > + hc->unplug_request = ich9_pm_device_unplug_request_cb;
> > + hc->unplug = ich9_pm_device_unplug_cb;
> > adevc->ospm_status = ich9_pm_ospm_status;
> > adevc->send_event = ich9_send_gpe;
> > }
> > diff --git a/include/hw/acpi/cpu_hotplug.h b/include/hw/acpi/cpu_hotplug.h
> > index 6d729d8..6fef67e 100644
> > --- a/include/hw/acpi/cpu_hotplug.h
> > +++ b/include/hw/acpi/cpu_hotplug.h
> > @@ -15,13 +15,14 @@
> > #include "hw/acpi/acpi.h"
> > #include "hw/acpi/pc-hotplug.h"
> > #include "hw/acpi/aml-build.h"
> > +#include "hw/hotplug.h"
> >
> > typedef struct AcpiCpuHotplug {
> > MemoryRegion io;
> > uint8_t sts[ACPI_GPE_PROC_LEN];
> > } AcpiCpuHotplug;
> >
> > -void legacy_acpi_cpu_plug_cb(ACPIREGS *ar, qemu_irq irq,
> > +void legacy_acpi_cpu_plug_cb(HotplugHandler *hotplug_dev,
> > AcpiCpuHotplug *g, DeviceState *dev, Error
> > **errp);
> >
> > void legacy_acpi_cpu_hotplug_init(MemoryRegion *parent, Object *owner,
> > diff --git a/include/hw/acpi/ich9.h b/include/hw/acpi/ich9.h
> > index 63fa198..bbd657c 100644
> > --- a/include/hw/acpi/ich9.h
> > +++ b/include/hw/acpi/ich9.h
> > @@ -69,10 +69,11 @@ extern const VMStateDescription vmstate_ich9_pm;
> >
> > void ich9_pm_add_properties(Object *obj, ICH9LPCPMRegs *pm, Error **errp);
> >
> > -void ich9_pm_device_plug_cb(ICH9LPCPMRegs *pm, DeviceState *dev, Error
> > **errp);
> > -void ich9_pm_device_unplug_request_cb(ICH9LPCPMRegs *pm, DeviceState *dev,
> > - Error **errp);
> > -void ich9_pm_device_unplug_cb(ICH9LPCPMRegs *pm, DeviceState *dev,
> > +void ich9_pm_device_plug_cb(HotplugHandler *hotplug_dev, DeviceState *dev,
> > + Error **errp);
> > +void ich9_pm_device_unplug_request_cb(HotplugHandler *hotplug_dev,
> > + DeviceState *dev, Error **errp);
> > +void ich9_pm_device_unplug_cb(HotplugHandler *hotplug_dev, DeviceState
> > *dev,
> > Error **errp);
> >
> > void ich9_pm_ospm_status(AcpiDeviceIf *adev, ACPIOSTInfoList ***list);
> > diff --git a/include/hw/acpi/memory_hotplug.h
> > b/include/hw/acpi/memory_hotplug.h
> > index 3a646b1..d2c7452 100644
> > --- a/include/hw/acpi/memory_hotplug.h
> > +++ b/include/hw/acpi/memory_hotplug.h
> > @@ -32,9 +32,9 @@ typedef struct MemHotplugState {
> > void acpi_memory_hotplug_init(MemoryRegion *as, Object *owner,
> > MemHotplugState *state);
> >
> > -void acpi_memory_plug_cb(ACPIREGS *ar, qemu_irq irq, MemHotplugState
> > *mem_st,
> > +void acpi_memory_plug_cb(HotplugHandler *hotplug_dev, MemHotplugState
> > *mem_st,
> > DeviceState *dev, Error **errp);
> > -void acpi_memory_unplug_request_cb(ACPIREGS *ar, qemu_irq irq,
> > +void acpi_memory_unplug_request_cb(HotplugHandler *hotplug_dev,
> > MemHotplugState *mem_st,
> > DeviceState *dev, Error **errp);
> > void acpi_memory_unplug_cb(MemHotplugState *mem_st,
> > diff --git a/include/hw/acpi/pcihp.h b/include/hw/acpi/pcihp.h
> > index 79a4392..04528b7 100644
> > --- a/include/hw/acpi/pcihp.h
> > +++ b/include/hw/acpi/pcihp.h
> > @@ -29,6 +29,7 @@
> >
> > #include "hw/acpi/acpi.h"
> > #include "migration/vmstate.h"
> > +#include "hw/hotplug.h"
> >
> > #define ACPI_PCIHP_IO_BASE_PROP "acpi-pcihp-io-base"
> > #define ACPI_PCIHP_IO_LEN_PROP "acpi-pcihp-io-len"
> > @@ -56,9 +57,9 @@ typedef struct AcpiPciHpState {
> > void acpi_pcihp_init(Object *owner, AcpiPciHpState *, PCIBus *root,
> > MemoryRegion *address_space_io, bool
> > bridges_enabled);
> >
> > -void acpi_pcihp_device_plug_cb(ACPIREGS *ar, qemu_irq irq, AcpiPciHpState
> > *s,
> > +void acpi_pcihp_device_plug_cb(HotplugHandler *hotplug_dev, AcpiPciHpState
> > *s,
> > DeviceState *dev, Error **errp);
> > -void acpi_pcihp_device_unplug_cb(ACPIREGS *ar, qemu_irq irq,
> > AcpiPciHpState *s,
> > +void acpi_pcihp_device_unplug_cb(HotplugHandler *hotplug_dev,
> > AcpiPciHpState *s,
> > DeviceState *dev, Error **errp);
> >
> > /* Called on reset */
> >
>