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-rw-r--r--qemu/hw/acpi/pcihp.c336
1 files changed, 0 insertions, 336 deletions
diff --git a/qemu/hw/acpi/pcihp.c b/qemu/hw/acpi/pcihp.c
deleted file mode 100644
index 71f4c4e14..000000000
--- a/qemu/hw/acpi/pcihp.c
+++ /dev/null
@@ -1,336 +0,0 @@
-/*
- * QEMU<->ACPI BIOS PCI hotplug interface
- *
- * QEMU supports PCI hotplug via ACPI. This module
- * implements the interface between QEMU and the ACPI BIOS.
- * Interface specification - see docs/specs/acpi_pci_hotplug.txt
- *
- * Copyright (c) 2013, Red Hat Inc, Michael S. Tsirkin (mst@redhat.com)
- * Copyright (c) 2006 Fabrice Bellard
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License version 2 as published by the Free Software Foundation.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, see <http://www.gnu.org/licenses/>
- *
- * Contributions after 2012-01-13 are licensed under the terms of the
- * GNU GPL, version 2 or (at your option) any later version.
- */
-
-#include "qemu/osdep.h"
-#include "hw/acpi/pcihp.h"
-
-#include "hw/hw.h"
-#include "hw/i386/pc.h"
-#include "hw/pci/pci.h"
-#include "hw/acpi/acpi.h"
-#include "sysemu/sysemu.h"
-#include "exec/ioport.h"
-#include "exec/address-spaces.h"
-#include "hw/pci/pci_bus.h"
-#include "qapi/error.h"
-#include "qom/qom-qobject.h"
-#include "qapi/qmp/qint.h"
-
-//#define DEBUG
-
-#ifdef DEBUG
-# define ACPI_PCIHP_DPRINTF(format, ...) printf(format, ## __VA_ARGS__)
-#else
-# define ACPI_PCIHP_DPRINTF(format, ...) do { } while (0)
-#endif
-
-#define ACPI_PCIHP_ADDR 0xae00
-#define ACPI_PCIHP_SIZE 0x0014
-#define ACPI_PCIHP_LEGACY_SIZE 0x000f
-#define PCI_UP_BASE 0x0000
-#define PCI_DOWN_BASE 0x0004
-#define PCI_EJ_BASE 0x0008
-#define PCI_RMV_BASE 0x000c
-#define PCI_SEL_BASE 0x0010
-
-typedef struct AcpiPciHpFind {
- int bsel;
- PCIBus *bus;
-} AcpiPciHpFind;
-
-static int acpi_pcihp_get_bsel(PCIBus *bus)
-{
- Error *local_err = NULL;
- int64_t bsel = object_property_get_int(OBJECT(bus), ACPI_PCIHP_PROP_BSEL,
- &local_err);
-
- if (local_err || bsel < 0 || bsel >= ACPI_PCIHP_MAX_HOTPLUG_BUS) {
- if (local_err) {
- error_free(local_err);
- }
- return -1;
- } else {
- return bsel;
- }
-}
-
-static void acpi_pcihp_test_hotplug_bus(PCIBus *bus, void *opaque)
-{
- AcpiPciHpFind *find = opaque;
- if (find->bsel == acpi_pcihp_get_bsel(bus)) {
- find->bus = bus;
- }
-}
-
-static PCIBus *acpi_pcihp_find_hotplug_bus(AcpiPciHpState *s, int bsel)
-{
- AcpiPciHpFind find = { .bsel = bsel, .bus = NULL };
-
- if (bsel < 0) {
- return NULL;
- }
-
- pci_for_each_bus(s->root, acpi_pcihp_test_hotplug_bus, &find);
-
- /* Make bsel 0 eject root bus if bsel property is not set,
- * for compatibility with non acpi setups.
- * TODO: really needed?
- */
- if (!bsel && !find.bus) {
- find.bus = s->root;
- }
- return find.bus;
-}
-
-static bool acpi_pcihp_pc_no_hotplug(AcpiPciHpState *s, PCIDevice *dev)
-{
- PCIDeviceClass *pc = PCI_DEVICE_GET_CLASS(dev);
- DeviceClass *dc = DEVICE_GET_CLASS(dev);
- /*
- * ACPI doesn't allow hotplug of bridge devices. Don't allow
- * hot-unplug of bridge devices unless they were added by hotplug
- * (and so, not described by acpi).
- */
- return (pc->is_bridge && !dev->qdev.hotplugged) || !dc->hotpluggable;
-}
-
-static void acpi_pcihp_eject_slot(AcpiPciHpState *s, unsigned bsel, unsigned slots)
-{
- BusChild *kid, *next;
- int slot = ctz32(slots);
- PCIBus *bus = acpi_pcihp_find_hotplug_bus(s, bsel);
-
- if (!bus) {
- return;
- }
-
- /* Mark request as complete */
- s->acpi_pcihp_pci_status[bsel].down &= ~(1U << slot);
- s->acpi_pcihp_pci_status[bsel].up &= ~(1U << slot);
-
- QTAILQ_FOREACH_SAFE(kid, &bus->qbus.children, sibling, next) {
- DeviceState *qdev = kid->child;
- PCIDevice *dev = PCI_DEVICE(qdev);
- if (PCI_SLOT(dev->devfn) == slot) {
- if (!acpi_pcihp_pc_no_hotplug(s, dev)) {
- object_unparent(OBJECT(qdev));
- }
- }
- }
-}
-
-static void acpi_pcihp_update_hotplug_bus(AcpiPciHpState *s, int bsel)
-{
- BusChild *kid, *next;
- PCIBus *bus = acpi_pcihp_find_hotplug_bus(s, bsel);
-
- /* Execute any pending removes during reset */
- while (s->acpi_pcihp_pci_status[bsel].down) {
- acpi_pcihp_eject_slot(s, bsel, s->acpi_pcihp_pci_status[bsel].down);
- }
-
- s->acpi_pcihp_pci_status[bsel].hotplug_enable = ~0;
-
- if (!bus) {
- return;
- }
- QTAILQ_FOREACH_SAFE(kid, &bus->qbus.children, sibling, next) {
- DeviceState *qdev = kid->child;
- PCIDevice *pdev = PCI_DEVICE(qdev);
- int slot = PCI_SLOT(pdev->devfn);
-
- if (acpi_pcihp_pc_no_hotplug(s, pdev)) {
- s->acpi_pcihp_pci_status[bsel].hotplug_enable &= ~(1U << slot);
- }
- }
-}
-
-static void acpi_pcihp_update(AcpiPciHpState *s)
-{
- int i;
-
- for (i = 0; i < ACPI_PCIHP_MAX_HOTPLUG_BUS; ++i) {
- acpi_pcihp_update_hotplug_bus(s, i);
- }
-}
-
-void acpi_pcihp_reset(AcpiPciHpState *s)
-{
- acpi_pcihp_update(s);
-}
-
-void acpi_pcihp_device_plug_cb(ACPIREGS *ar, qemu_irq irq, AcpiPciHpState *s,
- DeviceState *dev, Error **errp)
-{
- PCIDevice *pdev = PCI_DEVICE(dev);
- int slot = PCI_SLOT(pdev->devfn);
- int bsel = acpi_pcihp_get_bsel(pdev->bus);
- if (bsel < 0) {
- error_setg(errp, "Unsupported bus. Bus doesn't have property '"
- ACPI_PCIHP_PROP_BSEL "' set");
- return;
- }
-
- /* 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) {
- return;
- }
-
- s->acpi_pcihp_pci_status[bsel].up |= (1U << slot);
-
- acpi_send_gpe_event(ar, irq, ACPI_PCI_HOTPLUG_STATUS);
-}
-
-void acpi_pcihp_device_unplug_cb(ACPIREGS *ar, qemu_irq irq, AcpiPciHpState *s,
- DeviceState *dev, Error **errp)
-{
- PCIDevice *pdev = PCI_DEVICE(dev);
- int slot = PCI_SLOT(pdev->devfn);
- int bsel = acpi_pcihp_get_bsel(pdev->bus);
- if (bsel < 0) {
- error_setg(errp, "Unsupported bus. Bus doesn't have property '"
- ACPI_PCIHP_PROP_BSEL "' set");
- return;
- }
-
- s->acpi_pcihp_pci_status[bsel].down |= (1U << slot);
-
- acpi_send_gpe_event(ar, irq, ACPI_PCI_HOTPLUG_STATUS);
-}
-
-static uint64_t pci_read(void *opaque, hwaddr addr, unsigned int size)
-{
- AcpiPciHpState *s = opaque;
- uint32_t val = 0;
- int bsel = s->hotplug_select;
-
- if (bsel < 0 || bsel >= ACPI_PCIHP_MAX_HOTPLUG_BUS) {
- return 0;
- }
-
- switch (addr) {
- case PCI_UP_BASE:
- val = s->acpi_pcihp_pci_status[bsel].up;
- if (!s->legacy_piix) {
- s->acpi_pcihp_pci_status[bsel].up = 0;
- }
- ACPI_PCIHP_DPRINTF("pci_up_read %" PRIu32 "\n", val);
- break;
- case PCI_DOWN_BASE:
- val = s->acpi_pcihp_pci_status[bsel].down;
- ACPI_PCIHP_DPRINTF("pci_down_read %" PRIu32 "\n", val);
- break;
- case PCI_EJ_BASE:
- /* No feature defined yet */
- ACPI_PCIHP_DPRINTF("pci_features_read %" PRIu32 "\n", val);
- break;
- case PCI_RMV_BASE:
- val = s->acpi_pcihp_pci_status[bsel].hotplug_enable;
- ACPI_PCIHP_DPRINTF("pci_rmv_read %" PRIu32 "\n", val);
- break;
- case PCI_SEL_BASE:
- val = s->hotplug_select;
- ACPI_PCIHP_DPRINTF("pci_sel_read %" PRIu32 "\n", val);
- default:
- break;
- }
-
- return val;
-}
-
-static void pci_write(void *opaque, hwaddr addr, uint64_t data,
- unsigned int size)
-{
- AcpiPciHpState *s = opaque;
- switch (addr) {
- case PCI_EJ_BASE:
- if (s->hotplug_select >= ACPI_PCIHP_MAX_HOTPLUG_BUS) {
- break;
- }
- acpi_pcihp_eject_slot(s, s->hotplug_select, data);
- ACPI_PCIHP_DPRINTF("pciej write %" HWADDR_PRIx " <== %" PRIu64 "\n",
- addr, data);
- break;
- case PCI_SEL_BASE:
- s->hotplug_select = data;
- ACPI_PCIHP_DPRINTF("pcisel write %" HWADDR_PRIx " <== %" PRIu64 "\n",
- addr, data);
- default:
- break;
- }
-}
-
-static const MemoryRegionOps acpi_pcihp_io_ops = {
- .read = pci_read,
- .write = pci_write,
- .endianness = DEVICE_LITTLE_ENDIAN,
- .valid = {
- .min_access_size = 4,
- .max_access_size = 4,
- },
-};
-
-void acpi_pcihp_init(Object *owner, AcpiPciHpState *s, PCIBus *root_bus,
- MemoryRegion *address_space_io, bool bridges_enabled)
-{
- s->io_len = ACPI_PCIHP_SIZE;
- s->io_base = ACPI_PCIHP_ADDR;
-
- s->root= root_bus;
- s->legacy_piix = !bridges_enabled;
-
- if (s->legacy_piix) {
- unsigned *bus_bsel = g_malloc(sizeof *bus_bsel);
-
- s->io_len = ACPI_PCIHP_LEGACY_SIZE;
-
- *bus_bsel = ACPI_PCIHP_BSEL_DEFAULT;
- object_property_add_uint32_ptr(OBJECT(root_bus), ACPI_PCIHP_PROP_BSEL,
- bus_bsel, NULL);
- }
-
- memory_region_init_io(&s->io, owner, &acpi_pcihp_io_ops, s,
- "acpi-pci-hotplug", s->io_len);
- memory_region_add_subregion(address_space_io, s->io_base, &s->io);
-
- object_property_add_uint16_ptr(owner, ACPI_PCIHP_IO_BASE_PROP, &s->io_base,
- &error_abort);
- object_property_add_uint16_ptr(owner, ACPI_PCIHP_IO_LEN_PROP, &s->io_len,
- &error_abort);
-}
-
-const VMStateDescription vmstate_acpi_pcihp_pci_status = {
- .name = "acpi_pcihp_pci_status",
- .version_id = 1,
- .minimum_version_id = 1,
- .fields = (VMStateField[]) {
- VMSTATE_UINT32(up, AcpiPciHpPciStatus),
- VMSTATE_UINT32(down, AcpiPciHpPciStatus),
- VMSTATE_END_OF_LIST()
- }
-};