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[Qemu-devel] [RFC 8/9] pcihp: expose PCI hotplug MMIO base/length as pro
From: |
Igor Mammedov |
Subject: |
[Qemu-devel] [RFC 8/9] pcihp: expose PCI hotplug MMIO base/length as properties of piix4pm |
Date: |
Fri, 7 Feb 2014 13:51:35 +0100 |
with introduction of PCIHP, MMIO range becomes changable
at runtime so it's not possible to statically punch hole
PCI bus _CRS.
Making IO base/length available as readonly properties
allow acpi builder to get values and reserve PCI hotplug
IO range at runtime later.
Signed-off-by: Igor Mammedov <address@hidden>
---
hw/acpi/pcihp.c | 28 ++++++++++++++++++++++++++++
hw/acpi/piix4.c | 1 +
include/hw/acpi/pcihp.h | 4 ++++
3 files changed, 33 insertions(+), 0 deletions(-)
diff --git a/hw/acpi/pcihp.c b/hw/acpi/pcihp.c
index 1ce6fc2..629d364 100644
--- a/hw/acpi/pcihp.c
+++ b/hw/acpi/pcihp.c
@@ -37,6 +37,7 @@
#include "hw/pci/pci_bus.h"
#include "qom/qom-qobject.h"
#include "qapi/qmp/qint.h"
+#include "qapi/visitor.h"
//#define DEBUG
@@ -309,3 +310,30 @@ const VMStateDescription vmstate_acpi_pcihp_pci_status = {
VMSTATE_END_OF_LIST()
}
};
+
+static void acpi_pcihp_get_io_addr(Object *obj, Visitor *v, void *opaque,
+ const char *name, Error **errp)
+{
+ AcpiPciHpState *s = opaque;
+ MemoryRegionSection mr_info = memory_region_find(&s->io, 0, 1);
+ uint16_t value = mr_info.offset_within_address_space;
+
+ visit_type_uint16(v, &value, name, errp);
+}
+
+static void acpi_pcihp_get_io_len(Object *obj, Visitor *v, void *opaque,
+ const char *name, Error **errp)
+{
+ AcpiPciHpState *s = opaque;
+ uint16_t value = memory_region_size(&s->io);
+
+ visit_type_uint16(v, &value, name, errp);
+}
+
+void acpi_pcihp_add_mmio_properties(Object *obj, AcpiPciHpState *s)
+{
+ object_property_add(obj, ACPI_PCIHP_IO_ADDR, "uint16",
+ acpi_pcihp_get_io_addr, NULL, NULL, s, NULL);
+ object_property_add(obj, ACPI_PCIHP_IO_LEN, "uint16",
+ acpi_pcihp_get_io_len, NULL, NULL, s, NULL);
+}
diff --git a/hw/acpi/piix4.c b/hw/acpi/piix4.c
index 7a0efcb..034c5cd 100644
--- a/hw/acpi/piix4.c
+++ b/hw/acpi/piix4.c
@@ -558,6 +558,7 @@ static void piix4_acpi_system_hot_add_init(MemoryRegion
*parent,
"acpi-gpe0", GPE_LEN);
memory_region_add_subregion(parent, GPE_BASE, &s->io_gpe);
+ acpi_pcihp_add_mmio_properties(OBJECT(s), &s->acpi_pci_hotplug);
acpi_pcihp_init(&s->acpi_pci_hotplug, bus, parent,
s->use_acpi_pci_hotplug);
diff --git a/include/hw/acpi/pcihp.h b/include/hw/acpi/pcihp.h
index 0a90e4a..0eb4e1c 100644
--- a/include/hw/acpi/pcihp.h
+++ b/include/hw/acpi/pcihp.h
@@ -70,4 +70,8 @@ extern const VMStateDescription vmstate_acpi_pcihp_pci_status;
vmstate_acpi_pcihp_pci_status, \
AcpiPciHpPciStatus)
+#define ACPI_PCIHP_IO_ADDR "pcihp-io-addr"
+#define ACPI_PCIHP_IO_LEN "pcihp-io-len"
+
+void acpi_pcihp_add_mmio_properties(Object *obj, AcpiPciHpState *s);
#endif
--
1.7.1
- [Qemu-devel] [RFC 2/9] Revert "pc: PIIX DSDT: exclude CPU/PCI hotplug & GPE0 IO range from PCI bus resources", (continued)
- [Qemu-devel] [RFC 2/9] Revert "pc: PIIX DSDT: exclude CPU/PCI hotplug & GPE0 IO range from PCI bus resources", Igor Mammedov, 2014/02/07
- [Qemu-devel] [RFC 3/9] Partial revert "pc: ACPI: expose PRST IO range via _CRS", Igor Mammedov, 2014/02/07
- [Qemu-devel] [RFC 4/9] acpi: replace opencoded opcodes with defines, Igor Mammedov, 2014/02/07
- [Qemu-devel] [RFC 5/9] acpi: add PNP0C02 to PCI0 bus, Igor Mammedov, 2014/02/07
- [Qemu-devel] [RFC 6/9] acpi: consume GPE0 IO resources in PNP0C02 device, Igor Mammedov, 2014/02/07
- [Qemu-devel] [RFC 7/9] acpi: consume CPU hotplug IO resource in PNP0C02 device, Igor Mammedov, 2014/02/07
- [Qemu-devel] [RFC 8/9] pcihp: expose PCI hotplug MMIO base/length as properties of piix4pm,
Igor Mammedov <=
- [Qemu-devel] [RFC 9/9] acpi: consume PCIHP IO resource in PNP0C02 device, Igor Mammedov, 2014/02/07
- Re: [Qemu-devel] [RFC 0/9] generate dynamic _CRS for motherboard resources, Michael S. Tsirkin, 2014/02/16
- Re: [Qemu-devel] [RFC 0/9] generate dynamic _CRS for motherboard resources, Igor Mammedov, 2014/02/18
- Re: [Qemu-devel] [RFC 0/9] generate dynamic _CRS for motherboard resources, Laszlo Ersek, 2014/02/18
- Re: [Qemu-devel] [RFC 0/9] generate dynamic _CRS for motherboard resources, Igor Mammedov, 2014/02/19