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-rw-r--r--hw/acpi/aml-build.c68
-rw-r--r--hw/acpi/pcihp.c47
-rw-r--r--hw/acpi/piix4.c40
3 files changed, 129 insertions, 26 deletions
diff --git a/hw/acpi/aml-build.c b/hw/acpi/aml-build.c
index 1e43cd736d..555c24f21d 100644
--- a/hw/acpi/aml-build.c
+++ b/hw/acpi/aml-build.c
@@ -1589,6 +1589,74 @@ void acpi_build_tables_cleanup(AcpiBuildTables *tables, bool mfre)
g_array_free(tables->vmgenid, mfre);
}
+/*
+ * ACPI spec 5.2.5.3 Root System Description Pointer (RSDP).
+ * (Revision 1.0 or later)
+ */
+void
+build_rsdp(GArray *tbl, BIOSLinker *linker, AcpiRsdpData *rsdp_data)
+{
+ int tbl_off = tbl->len; /* Table offset in the RSDP file */
+
+ switch (rsdp_data->revision) {
+ case 0:
+ /* With ACPI 1.0, we must have an RSDT pointer */
+ g_assert(rsdp_data->rsdt_tbl_offset);
+ break;
+ case 2:
+ /* With ACPI 2.0+, we must have an XSDT pointer */
+ g_assert(rsdp_data->xsdt_tbl_offset);
+ break;
+ default:
+ /* Only revisions 0 (ACPI 1.0) and 2 (ACPI 2.0+) are valid for RSDP */
+ g_assert_not_reached();
+ }
+
+ bios_linker_loader_alloc(linker, ACPI_BUILD_RSDP_FILE, tbl, 16,
+ true /* fseg memory */);
+
+ g_array_append_vals(tbl, "RSD PTR ", 8); /* Signature */
+ build_append_int_noprefix(tbl, 0, 1); /* Checksum */
+ g_array_append_vals(tbl, rsdp_data->oem_id, 6); /* OEMID */
+ build_append_int_noprefix(tbl, rsdp_data->revision, 1); /* Revision */
+ build_append_int_noprefix(tbl, 0, 4); /* RsdtAddress */
+ if (rsdp_data->rsdt_tbl_offset) {
+ /* RSDT address to be filled by guest linker */
+ bios_linker_loader_add_pointer(linker, ACPI_BUILD_RSDP_FILE,
+ tbl_off + 16, 4,
+ ACPI_BUILD_TABLE_FILE,
+ *rsdp_data->rsdt_tbl_offset);
+ }
+
+ /* Checksum to be filled by guest linker */
+ bios_linker_loader_add_checksum(linker, ACPI_BUILD_RSDP_FILE,
+ tbl_off, 20, /* ACPI rev 1.0 RSDP size */
+ 8);
+
+ if (rsdp_data->revision == 0) {
+ /* ACPI 1.0 RSDP, we're done */
+ return;
+ }
+
+ build_append_int_noprefix(tbl, 36, 4); /* Length */
+
+ /* XSDT address to be filled by guest linker */
+ build_append_int_noprefix(tbl, 0, 8); /* XsdtAddress */
+ /* We already validated our xsdt pointer */
+ bios_linker_loader_add_pointer(linker, ACPI_BUILD_RSDP_FILE,
+ tbl_off + 24, 8,
+ ACPI_BUILD_TABLE_FILE,
+ *rsdp_data->xsdt_tbl_offset);
+
+ build_append_int_noprefix(tbl, 0, 1); /* Extended Checksum */
+ build_append_int_noprefix(tbl, 0, 3); /* Reserved */
+
+ /* Extended checksum to be filled by Guest linker */
+ bios_linker_loader_add_checksum(linker, ACPI_BUILD_RSDP_FILE,
+ tbl_off, 36, /* ACPI rev 2.0 RSDP size */
+ 32);
+}
+
/* Build rsdt table */
void
build_rsdt(GArray *table_data, BIOSLinker *linker, GArray *table_offsets,
diff --git a/hw/acpi/pcihp.c b/hw/acpi/pcihp.c
index 80d42e12ff..7bc7a72340 100644
--- a/hw/acpi/pcihp.c
+++ b/hw/acpi/pcihp.c
@@ -30,6 +30,7 @@
#include "hw/hw.h"
#include "hw/i386/pc.h"
#include "hw/pci/pci.h"
+#include "hw/pci/pci_bridge.h"
#include "hw/acpi/acpi.h"
#include "sysemu/sysemu.h"
#include "exec/address-spaces.h"
@@ -153,6 +154,7 @@ static bool acpi_pcihp_pc_no_hotplug(AcpiPciHpState *s, PCIDevice *dev)
static void acpi_pcihp_eject_slot(AcpiPciHpState *s, unsigned bsel, unsigned slots)
{
+ HotplugHandler *hotplug_ctrl;
BusChild *kid, *next;
int slot = ctz32(slots);
PCIBus *bus = acpi_pcihp_find_hotplug_bus(s, bsel);
@@ -170,7 +172,8 @@ static void acpi_pcihp_eject_slot(AcpiPciHpState *s, unsigned bsel, unsigned slo
PCIDevice *dev = PCI_DEVICE(qdev);
if (PCI_SLOT(dev->devfn) == slot) {
if (!acpi_pcihp_pc_no_hotplug(s, dev)) {
- object_unparent(OBJECT(qdev));
+ hotplug_ctrl = qdev_get_hotplug_handler(qdev);
+ hotplug_handler_unplug(hotplug_ctrl, qdev, &error_abort);
}
}
}
@@ -217,25 +220,48 @@ void acpi_pcihp_reset(AcpiPciHpState *s)
acpi_pcihp_update(s);
}
-void acpi_pcihp_device_plug_cb(HotplugHandler *hotplug_dev, AcpiPciHpState *s,
- DeviceState *dev, Error **errp)
+void acpi_pcihp_device_pre_plug_cb(HotplugHandler *hotplug_dev,
+ DeviceState *dev, Error **errp)
{
- PCIDevice *pdev = PCI_DEVICE(dev);
- int slot = PCI_SLOT(pdev->devfn);
- int bsel = acpi_pcihp_get_bsel(pci_get_bus(pdev));
- if (bsel < 0) {
+ /* Only hotplugged devices need the hotplug capability. */
+ if (dev->hotplugged &&
+ acpi_pcihp_get_bsel(pci_get_bus(PCI_DEVICE(dev))) < 0) {
error_setg(errp, "Unsupported bus. Bus doesn't have property '"
ACPI_PCIHP_PROP_BSEL "' set");
return;
}
+}
+
+void acpi_pcihp_device_plug_cb(HotplugHandler *hotplug_dev, AcpiPciHpState *s,
+ DeviceState *dev, Error **errp)
+{
+ PCIDevice *pdev = PCI_DEVICE(dev);
+ int slot = PCI_SLOT(pdev->devfn);
+ int bsel;
/* Don't send event when device is enabled during qemu machine creation:
* it is present on boot, no hotplug event is necessary. We do send an
* event when the device is disabled later. */
if (!dev->hotplugged) {
+ /*
+ * Overwrite the default hotplug handler with the ACPI PCI one
+ * for cold plugged bridges only.
+ */
+ if (!s->legacy_piix &&
+ object_dynamic_cast(OBJECT(dev), TYPE_PCI_BRIDGE)) {
+ PCIBus *sec = pci_bridge_get_sec_bus(PCI_BRIDGE(pdev));
+
+ qbus_set_hotplug_handler(BUS(sec), DEVICE(hotplug_dev),
+ &error_abort);
+ /* We don't have to overwrite any other hotplug handler yet */
+ assert(QLIST_EMPTY(&sec->child));
+ }
+
return;
}
+ bsel = acpi_pcihp_get_bsel(pci_get_bus(pdev));
+ g_assert(bsel >= 0);
s->acpi_pcihp_pci_status[bsel].up |= (1U << slot);
acpi_send_event(DEVICE(hotplug_dev), ACPI_PCI_HOTPLUG_STATUS);
}
@@ -243,6 +269,13 @@ void acpi_pcihp_device_plug_cb(HotplugHandler *hotplug_dev, AcpiPciHpState *s,
void acpi_pcihp_device_unplug_cb(HotplugHandler *hotplug_dev, AcpiPciHpState *s,
DeviceState *dev, Error **errp)
{
+ object_unparent(OBJECT(dev));
+}
+
+void acpi_pcihp_device_unplug_request_cb(HotplugHandler *hotplug_dev,
+ AcpiPciHpState *s, DeviceState *dev,
+ Error **errp)
+{
PCIDevice *pdev = PCI_DEVICE(dev);
int slot = PCI_SLOT(pdev->devfn);
int bsel = acpi_pcihp_get_bsel(pci_get_bus(pdev));
diff --git a/hw/acpi/piix4.c b/hw/acpi/piix4.c
index e330f24c71..88f9a9ec09 100644
--- a/hw/acpi/piix4.c
+++ b/hw/acpi/piix4.c
@@ -173,6 +173,7 @@ static int vmstate_acpi_post_load(void *opaque, int version_id)
PIIX4PMState *s = opaque;
pm_io_space_update(s);
+ smbus_io_space_update(s);
return 0;
}
@@ -370,6 +371,18 @@ static void piix4_pm_powerdown_req(Notifier *n, void *opaque)
acpi_pm1_evt_power_down(&s->ar);
}
+static void piix4_device_pre_plug_cb(HotplugHandler *hotplug_dev,
+ DeviceState *dev, Error **errp)
+{
+ if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
+ acpi_pcihp_device_pre_plug_cb(hotplug_dev, dev, errp);
+ } else if (!object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM) &&
+ !object_dynamic_cast(OBJECT(dev), TYPE_CPU)) {
+ error_setg(errp, "acpi: device pre plug request for not supported"
+ " device type: %s", object_get_typename(OBJECT(dev)));
+ }
+}
+
static void piix4_device_plug_cb(HotplugHandler *hotplug_dev,
DeviceState *dev, Error **errp)
{
@@ -392,8 +405,7 @@ static void piix4_device_plug_cb(HotplugHandler *hotplug_dev,
acpi_cpu_plug_cb(hotplug_dev, &s->cpuhp_state, dev, errp);
}
} else {
- error_setg(errp, "acpi: device plug request for not supported device"
- " type: %s", object_get_typename(OBJECT(dev)));
+ g_assert_not_reached();
}
}
@@ -407,8 +419,8 @@ static void piix4_device_unplug_request_cb(HotplugHandler *hotplug_dev,
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(hotplug_dev, &s->acpi_pci_hotplug, dev,
- errp);
+ acpi_pcihp_device_unplug_request_cb(hotplug_dev, &s->acpi_pci_hotplug,
+ dev, errp);
} else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU) &&
!s->cpu_hotplug_legacy) {
acpi_cpu_unplug_request_cb(hotplug_dev, &s->cpuhp_state, dev, errp);
@@ -426,6 +438,9 @@ static void piix4_device_unplug_cb(HotplugHandler *hotplug_dev,
if (s->acpi_memory_hotplug.is_enabled &&
object_dynamic_cast(OBJECT(dev), TYPE_PC_DIMM)) {
acpi_memory_unplug_cb(&s->acpi_memory_hotplug, dev, errp);
+ } else if (object_dynamic_cast(OBJECT(dev), TYPE_PCI_DEVICE)) {
+ acpi_pcihp_device_unplug_cb(hotplug_dev, &s->acpi_pci_hotplug, dev,
+ errp);
} else if (object_dynamic_cast(OBJECT(dev), TYPE_CPU) &&
!s->cpu_hotplug_legacy) {
acpi_cpu_unplug_cb(&s->cpuhp_state, dev, errp);
@@ -435,15 +450,6 @@ static void piix4_device_unplug_cb(HotplugHandler *hotplug_dev,
}
}
-static void piix4_update_bus_hotplug(PCIBus *pci_bus, void *opaque)
-{
- PIIX4PMState *s = opaque;
-
- /* pci_bus cannot outlive PIIX4PMState, because /machine keeps it alive
- * and it's not hot-unpluggable */
- qbus_set_hotplug_handler(BUS(pci_bus), DEVICE(s), &error_abort);
-}
-
static void piix4_pm_machine_ready(Notifier *n, void *opaque)
{
PIIX4PMState *s = container_of(n, PIIX4PMState, machine_ready);
@@ -457,12 +463,6 @@ static void piix4_pm_machine_ready(Notifier *n, void *opaque)
pci_conf[0x63] = 0x60;
pci_conf[0x67] = (memory_region_present(io_as, 0x3f8) ? 0x08 : 0) |
(memory_region_present(io_as, 0x2f8) ? 0x90 : 0);
-
- if (s->use_acpi_pci_hotplug) {
- pci_for_each_bus(pci_get_bus(d), piix4_update_bus_hotplug, s);
- } else {
- piix4_update_bus_hotplug(pci_get_bus(d), s);
- }
}
static void piix4_pm_add_propeties(PIIX4PMState *s)
@@ -536,6 +536,7 @@ static void piix4_pm_realize(PCIDevice *dev, Error **errp)
piix4_acpi_system_hot_add_init(pci_address_space_io(dev),
pci_get_bus(dev), s);
+ qbus_set_hotplug_handler(BUS(pci_get_bus(dev)), DEVICE(s), &error_abort);
piix4_pm_add_propeties(s);
}
@@ -702,6 +703,7 @@ static void piix4_pm_class_init(ObjectClass *klass, void *data)
*/
dc->user_creatable = false;
dc->hotpluggable = false;
+ hc->pre_plug = piix4_device_pre_plug_cb;
hc->plug = piix4_device_plug_cb;
hc->unplug_request = piix4_device_unplug_request_cb;
hc->unplug = piix4_device_unplug_cb;
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2025-04-27 08:00:20 +0200