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[Qemu-devel] [PULL 17/29] pci: add pci_for_each_bus_depth_first
From: |
Michael S. Tsirkin |
Subject: |
[Qemu-devel] [PULL 17/29] pci: add pci_for_each_bus_depth_first |
Date: |
Mon, 20 Jan 2014 16:10:20 +0200 |
Useful for ACPI hotplug.
Signed-off-by: Michael S. Tsirkin <address@hidden>
---
include/hw/pci/pci.h | 14 ++++++++++++++
hw/pci/pci.c | 28 ++++++++++++++++++++++++++++
2 files changed, 42 insertions(+)
diff --git a/include/hw/pci/pci.h b/include/hw/pci/pci.h
index 754b82d..5252346 100644
--- a/include/hw/pci/pci.h
+++ b/include/hw/pci/pci.h
@@ -387,6 +387,20 @@ int pci_bus_num(PCIBus *s);
void pci_for_each_device(PCIBus *bus, int bus_num,
void (*fn)(PCIBus *bus, PCIDevice *d, void *opaque),
void *opaque);
+void pci_for_each_bus_depth_first(PCIBus *bus,
+ void *(*begin)(PCIBus *bus, void
*parent_state),
+ void (*end)(PCIBus *bus, void *state),
+ void *parent_state);
+
+/* Use this wrapper when specific scan order is not required. */
+static inline
+void pci_for_each_bus(PCIBus *bus,
+ void (*fn)(PCIBus *bus, void *opaque),
+ void *opaque)
+{
+ pci_for_each_bus_depth_first(bus, NULL, fn, opaque);
+}
+
PCIBus *pci_find_primary_bus(void);
PCIBus *pci_device_root_bus(const PCIDevice *d);
const char *pci_root_bus_path(PCIDevice *dev);
diff --git a/hw/pci/pci.c b/hw/pci/pci.c
index aa2a395..2aca8a4 100644
--- a/hw/pci/pci.c
+++ b/hw/pci/pci.c
@@ -1704,6 +1704,34 @@ static PCIBus *pci_find_bus_nr(PCIBus *bus, int bus_num)
return NULL;
}
+void pci_for_each_bus_depth_first(PCIBus *bus,
+ void *(*begin)(PCIBus *bus, void
*parent_state),
+ void (*end)(PCIBus *bus, void *state),
+ void *parent_state)
+{
+ PCIBus *sec;
+ void *state;
+
+ if (!bus) {
+ return;
+ }
+
+ if (begin) {
+ state = begin(bus, parent_state);
+ } else {
+ state = parent_state;
+ }
+
+ QLIST_FOREACH(sec, &bus->child, sibling) {
+ pci_for_each_bus_depth_first(sec, begin, end, state);
+ }
+
+ if (end) {
+ end(bus, state);
+ }
+}
+
+
PCIDevice *pci_find_device(PCIBus *bus, int bus_num, uint8_t devfn)
{
bus = pci_find_bus_nr(bus, bus_num);
--
MST
- [Qemu-devel] [PULL 07/29] acpi unit-test: compare DSDT and SSDT tables against expected values, (continued)
- [Qemu-devel] [PULL 07/29] acpi unit-test: compare DSDT and SSDT tables against expected values, Michael S. Tsirkin, 2014/01/20
- [Qemu-devel] [PULL 08/29] configure: add CONFIG_IASL to config-host.h, Michael S. Tsirkin, 2014/01/20
- [Qemu-devel] [PULL 09/29] acpi unit-test: extract iasl executable from configuration, Michael S. Tsirkin, 2014/01/20
- [Qemu-devel] [PULL 10/29] acpi unit-test: added script to rebuild the expected aml files, Michael S. Tsirkin, 2014/01/20
- [Qemu-devel] [PULL 11/29] acpi unit-test: hook to rebuild expected aml files, Michael S. Tsirkin, 2014/01/20
- [Qemu-devel] [PULL 12/29] tests: fix acpi to work on bigendian host, Michael S. Tsirkin, 2014/01/20
- [Qemu-devel] [PULL 13/29] acpi unit-test: renamed ssdt_tables to tables, Michael S. Tsirkin, 2014/01/20
- [Qemu-devel] [PULL 14/29] acpi unit-test: resolved iasl crash, Michael S. Tsirkin, 2014/01/20
- [Qemu-devel] [PULL 15/29] acpi unit-test: do not fail on asl mismatch, Michael S. Tsirkin, 2014/01/20
- [Qemu-devel] [PULL 16/29] pc: make: fix dependencies: rebuild when included file is changed, Michael S. Tsirkin, 2014/01/20
- [Qemu-devel] [PULL 17/29] pci: add pci_for_each_bus_depth_first,
Michael S. Tsirkin <=
- [Qemu-devel] [PULL 18/29] pcihp: generalization of piix4 acpi, Michael S. Tsirkin, 2014/01/20
- [Qemu-devel] [PULL 20/29] acpi-build: enable hotplug for PCI bridges, Michael S. Tsirkin, 2014/01/20
- [Qemu-devel] [PULL 24/29] pc: PIIX DSDT: exclude CPU/PCI hotplug & GPE0 IO range from PCI bus resources, Michael S. Tsirkin, 2014/01/20
- [Qemu-devel] [PULL 23/29] pc: set PRST base in DSDT depending on chipset, Michael S. Tsirkin, 2014/01/20
- [Qemu-devel] [PULL 25/29] pc: Q35 DSDT: exclude CPU hotplug IO range from PCI bus resources, Michael S. Tsirkin, 2014/01/20
- [Qemu-devel] [PULL 26/29] pc: ACPI: expose PRST IO range via _CRS, Michael S. Tsirkin, 2014/01/20
- [Qemu-devel] [PULL 27/29] pc: ACPI: unify source of CPU hotplug IO base/len, Michael S. Tsirkin, 2014/01/20
- [Qemu-devel] [PULL 19/29] piix4: add acpi pci hotplug support, Michael S. Tsirkin, 2014/01/20