#include "qemu/osdep.h"
#include "qapi/error.h"
#include "hw/hw.h"
-#include "hw/i386/pc.h"
#include "hw/ide.h"
#include "hw/pci/pci.h"
#include "hw/irq.h"
}
}
-/* Xen Platform, Fixed IOPort */
-#define UNPLUG_ALL_IDE_DISKS 1
-#define UNPLUG_ALL_NICS 2
-#define UNPLUG_AUX_IDE_DISKS 4
+/*
+ * Unplug device flags.
+ *
+ * The logic got a little confused at some point in the past but this is
+ * what they do now.
+ *
+ * bit 0: Unplug all IDE and SCSI disks.
+ * bit 1: Unplug all NICs.
+ * bit 2: Unplug IDE disks except primary master. This is overridden if
+ * bit 0 is also present in the mask.
+ * bit 3: Unplug all NVMe disks.
+ *
+ */
+#define _UNPLUG_IDE_SCSI_DISKS 0
+#define UNPLUG_IDE_SCSI_DISKS (1u << _UNPLUG_IDE_SCSI_DISKS)
+
+#define _UNPLUG_ALL_NICS 1
+#define UNPLUG_ALL_NICS (1u << _UNPLUG_ALL_NICS)
+
+#define _UNPLUG_AUX_IDE_DISKS 2
+#define UNPLUG_AUX_IDE_DISKS (1u << _UNPLUG_AUX_IDE_DISKS)
+
+#define _UNPLUG_NVME_DISKS 3
+#define UNPLUG_NVME_DISKS (1u << _UNPLUG_NVME_DISKS)
static void unplug_nic(PCIBus *b, PCIDevice *d, void *o)
{
}
}
+/* Remove the peer of the NIC device. Normally, this would be a tap device. */
+static void del_nic_peer(NICState *nic, void *opaque)
+{
+ NetClientState *nc;
+
+ nc = qemu_get_queue(nic);
+ if (nc->peer)
+ qemu_del_net_client(nc->peer);
+}
+
static void pci_unplug_nics(PCIBus *bus)
{
+ qemu_foreach_nic(del_nic_peer, NULL);
pci_for_each_device(bus, 0, unplug_nic, NULL);
}
-static void unplug_disks(PCIBus *b, PCIDevice *d, void *o)
+static void unplug_disks(PCIBus *b, PCIDevice *d, void *opaque)
{
+ uint32_t flags = *(uint32_t *)opaque;
+ bool aux = (flags & UNPLUG_AUX_IDE_DISKS) &&
+ !(flags & UNPLUG_IDE_SCSI_DISKS);
+
/* We have to ignore passthrough devices */
- if (pci_get_word(d->config + PCI_CLASS_DEVICE) ==
- PCI_CLASS_STORAGE_IDE
- && strcmp(d->name, "xen-pci-passthrough") != 0) {
- pci_piix3_xen_ide_unplug(DEVICE(d));
+ if (!strcmp(d->name, "xen-pci-passthrough")) {
+ return;
+ }
+
+ switch (pci_get_word(d->config + PCI_CLASS_DEVICE)) {
+ case PCI_CLASS_STORAGE_IDE:
+ pci_piix3_xen_ide_unplug(DEVICE(d), aux);
+ break;
+
+ case PCI_CLASS_STORAGE_SCSI:
+ if (!aux) {
+ object_unparent(OBJECT(d));
+ }
+ break;
+
+ case PCI_CLASS_STORAGE_EXPRESS:
+ if (flags & UNPLUG_NVME_DISKS) {
+ object_unparent(OBJECT(d));
+ }
+
+ default:
+ break;
}
}
-static void pci_unplug_disks(PCIBus *bus)
+static void pci_unplug_disks(PCIBus *bus, uint32_t flags)
{
- pci_for_each_device(bus, 0, unplug_disks, NULL);
+ pci_for_each_device(bus, 0, unplug_disks, &flags);
}
static void platform_fixed_ioport_writew(void *opaque, uint32_t addr, uint32_t val)
switch (addr) {
case 0: {
PCIDevice *pci_dev = PCI_DEVICE(s);
- /* Unplug devices. Value is a bitmask of which devices to
- unplug, with bit 0 the IDE devices, bit 1 the network
- devices, and bit 2 the non-primary-master IDE devices. */
- if (val & UNPLUG_ALL_IDE_DISKS) {
+ /* Unplug devices. See comment above flag definitions */
+ if (val & (UNPLUG_IDE_SCSI_DISKS | UNPLUG_AUX_IDE_DISKS |
+ UNPLUG_NVME_DISKS)) {
DPRINTF("unplug disks\n");
- blk_drain_all();
- blk_flush_all();
- pci_unplug_disks(pci_dev->bus);
+ pci_unplug_disks(pci_get_bus(pci_dev), val);
}
if (val & UNPLUG_ALL_NICS) {
DPRINTF("unplug nics\n");
- pci_unplug_nics(pci_dev->bus);
- }
- if (val & UNPLUG_AUX_IDE_DISKS) {
- DPRINTF("unplug auxiliary disks not supported\n");
+ pci_unplug_nics(pci_get_bus(pci_dev));
}
break;
}
case 0: /* Platform flags */ {
hvmmem_type_t mem_type = (val & PFFLAG_ROM_LOCK) ?
HVMMEM_ram_ro : HVMMEM_ram_rw;
- if (xc_hvm_set_mem_type(xen_xc, xen_domid, mem_type, 0xc0, 0x40)) {
+ if (xen_set_mem_type(xen_domid, mem_type, 0xc0, 0x40)) {
DPRINTF("unable to change ro/rw state of ROM memory area!\n");
} else {
s->flags = val & PFFLAG_ROM_LOCK;
uint64_t val, unsigned int size)
{
PCIXenPlatformState *s = opaque;
+ PCIDevice *pci_dev = PCI_DEVICE(s);
switch (addr) {
case 0: /* Platform flags */
platform_fixed_ioport_writeb(opaque, 0, (uint32_t)val);
break;
+ case 4:
+ if (val == 1) {
+ /*
+ * SUSE unplug for Xenlinux
+ * xen-kmp used this since xen-3.0.4, instead the official protocol
+ * from xen-3.3+ It did an unconditional "outl(1, (ioaddr + 4));"
+ * Pre VMDP 1.7 used 4 and 8 depending on how VMDP was configured.
+ * If VMDP was to control both disk and LAN it would use 4.
+ * If it controlled just disk or just LAN, it would use 8 below.
+ */
+ pci_unplug_disks(pci_get_bus(pci_dev), UNPLUG_IDE_SCSI_DISKS);
+ pci_unplug_nics(pci_get_bus(pci_dev));
+ }
+ break;
case 8:
- log_writeb(s, (uint32_t)val);
+ switch (val) {
+ case 1:
+ pci_unplug_disks(pci_get_bus(pci_dev), UNPLUG_IDE_SCSI_DISKS);
+ break;
+ case 2:
+ pci_unplug_nics(pci_get_bus(pci_dev));
+ break;
+ default:
+ log_writeb(s, (uint32_t)val);
+ break;
+ }
break;
default:
break;
.parent = TYPE_PCI_DEVICE,
.instance_size = sizeof(PCIXenPlatformState),
.class_init = xen_platform_class_init,
+ .interfaces = (InterfaceInfo[]) {
+ { INTERFACE_CONVENTIONAL_PCI_DEVICE },
+ { },
+ },
};
static void xen_platform_register_types(void)
projects / qemu.git / blobdiff