On 29/10/18 18:01, Samuel Ortiz wrote:
From: Sebastien Boeuf <sebastien.bo...@intel.com>
Instead of using the machine type specific method find_i440fx() to
retrieve the PCI bus, this commit aims to rely on the fact that the
PCI bus is known by the structure AcpiPciHpState.
When the structure is initialized through acpi_pcihp_init() call,
it saves the PCI bus, which means there is no need to invoke a
special function later on.
Based on the fact that find_i440fx() was only used there, this
patch also removes the function find_i440fx() itself from the
entire codebase.
Nice :)
Signed-off-by: Sebastien Boeuf <sebastien.bo...@intel.com>
Signed-off-by: Jing Liu <jing2....@linux.intel.com>
Reviewed-by: Philippe Mathieu-Daudé <phi...@redhat.com>
Tested-by: Philippe Mathieu-Daudé <phi...@redhat.com>
---
hw/acpi/pcihp.c | 10 ++++------
hw/pci-host/piix.c | 8 --------
include/hw/i386/pc.h | 1 -
stubs/Makefile.objs | 1 -
stubs/pci-host-piix.c | 6 ------
5 files changed, 4 insertions(+), 22 deletions(-)
delete mode 100644 stubs/pci-host-piix.c
diff --git a/hw/acpi/pcihp.c b/hw/acpi/pcihp.c
index 80d42e12ff..254b2e50ab 100644
--- a/hw/acpi/pcihp.c
+++ b/hw/acpi/pcihp.c
@@ -93,10 +93,9 @@ static void *acpi_set_bsel(PCIBus *bus, void *opaque)
return bsel_alloc;
}
-static void acpi_set_pci_info(void)
+static void acpi_set_pci_info(AcpiPciHpState *s)
{
static bool bsel_is_set;
- PCIBus *bus;
unsigned bsel_alloc = ACPI_PCIHP_BSEL_DEFAULT;
if (bsel_is_set) {
@@ -104,10 +103,9 @@ static void acpi_set_pci_info(void)
}
bsel_is_set = true;
- bus = find_i440fx(); /* TODO: Q35 support */
- if (bus) {
+ if (s->root) {
/* Scan all PCI buses. Set property to enable acpi based hotplug. */
- pci_for_each_bus_depth_first(bus, acpi_set_bsel, NULL, &bsel_alloc);
+ pci_for_each_bus_depth_first(s->root, acpi_set_bsel, NULL,
&bsel_alloc);
}
}
@@ -213,7 +211,7 @@ static void acpi_pcihp_update(AcpiPciHpState *s)
void acpi_pcihp_reset(AcpiPciHpState *s)
{
- acpi_set_pci_info();
+ acpi_set_pci_info(s);
acpi_pcihp_update(s);
}
diff --git a/hw/pci-host/piix.c b/hw/pci-host/piix.c
index da73743fa2..4940f59c9b 100644
--- a/hw/pci-host/piix.c
+++ b/hw/pci-host/piix.c
@@ -445,14 +445,6 @@ PCIBus *i440fx_init(const char *host_type, const char
*pci_type,
return b;
}
-PCIBus *find_i440fx(void)
-{
- PCIHostState *s = OBJECT_CHECK(PCIHostState,
- object_resolve_path("/machine/i440fx",
NULL),
- TYPE_PCI_HOST_BRIDGE);
- return s ? s->bus : NULL;
-}
-
/* PIIX3 PCI to ISA bridge */
static void piix3_set_irq_pic(PIIX3State *piix3, int pic_irq)
{
diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h
index 7d177cd207..f6b2649cf8 100644
--- a/include/hw/i386/pc.h
+++ b/include/hw/i386/pc.h
@@ -260,7 +260,6 @@ PCIBus *i440fx_init(const char *host_type, const char
*pci_type,
MemoryRegion *pci_memory,
MemoryRegion *ram_memory);
-PCIBus *find_i440fx(void);
/* piix4.c */
extern PCIDevice *piix4_dev;
int piix4_init(PCIBus *bus, ISABus **isa_bus, int devfn);
diff --git a/stubs/Makefile.objs b/stubs/Makefile.objs
index 5dd0aeeec6..725f78bedc 100644
--- a/stubs/Makefile.objs
+++ b/stubs/Makefile.objs
@@ -41,6 +41,5 @@ stub-obj-y += pc_madt_cpu_entry.o
stub-obj-y += vmgenid.o
stub-obj-y += xen-common.o
stub-obj-y += xen-hvm.o
-stub-obj-y += pci-host-piix.o
stub-obj-y += ram-block.o
stub-obj-y += ramfb.o
diff --git a/stubs/pci-host-piix.c b/stubs/pci-host-piix.c
deleted file mode 100644
index 6ed81b1f21..0000000000
--- a/stubs/pci-host-piix.c
+++ /dev/null
@@ -1,6 +0,0 @@
-#include "qemu/osdep.h"
-#include "hw/i386/pc.h"
-PCIBus *find_i440fx(void)
-{
- return NULL;
-}