ahci: Add migration support
Jason tested these patches by migrating Windows 7 and Fedora 17 guests (while under I/O) on both piix with ahci attached and on q35 (which has a built-in AHCI controller). Signed-off-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Jason Baron <jbaron@redhat.com> Signed-off-by: Kevin Wolf <kwolf@redhat.com>
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@ -1199,6 +1199,82 @@ void ahci_reset(AHCIState *s)
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}
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}
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}
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}
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static const VMStateDescription vmstate_ahci_device = {
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.name = "ahci port",
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.version_id = 1,
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.fields = (VMStateField []) {
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VMSTATE_IDE_BUS(port, AHCIDevice),
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VMSTATE_UINT32(port_state, AHCIDevice),
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VMSTATE_UINT32(finished, AHCIDevice),
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VMSTATE_UINT32(port_regs.lst_addr, AHCIDevice),
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VMSTATE_UINT32(port_regs.lst_addr_hi, AHCIDevice),
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VMSTATE_UINT32(port_regs.fis_addr, AHCIDevice),
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VMSTATE_UINT32(port_regs.fis_addr_hi, AHCIDevice),
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VMSTATE_UINT32(port_regs.irq_stat, AHCIDevice),
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VMSTATE_UINT32(port_regs.irq_mask, AHCIDevice),
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VMSTATE_UINT32(port_regs.cmd, AHCIDevice),
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VMSTATE_UINT32(port_regs.tfdata, AHCIDevice),
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VMSTATE_UINT32(port_regs.sig, AHCIDevice),
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VMSTATE_UINT32(port_regs.scr_stat, AHCIDevice),
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VMSTATE_UINT32(port_regs.scr_ctl, AHCIDevice),
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VMSTATE_UINT32(port_regs.scr_err, AHCIDevice),
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VMSTATE_UINT32(port_regs.scr_act, AHCIDevice),
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VMSTATE_UINT32(port_regs.cmd_issue, AHCIDevice),
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VMSTATE_BOOL(done_atapi_packet, AHCIDevice),
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VMSTATE_INT32(busy_slot, AHCIDevice),
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VMSTATE_BOOL(init_d2h_sent, AHCIDevice),
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VMSTATE_END_OF_LIST()
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},
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};
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static int ahci_state_post_load(void *opaque, int version_id)
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{
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int i;
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struct AHCIDevice *ad;
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AHCIState *s = opaque;
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for (i = 0; i < s->ports; i++) {
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ad = &s->dev[i];
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AHCIPortRegs *pr = &ad->port_regs;
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map_page(&ad->lst,
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((uint64_t)pr->lst_addr_hi << 32) | pr->lst_addr, 1024);
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map_page(&ad->res_fis,
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((uint64_t)pr->fis_addr_hi << 32) | pr->fis_addr, 256);
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/*
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* All pending i/o should be flushed out on a migrate. However,
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* we might not have cleared the busy_slot since this is done
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* in a bh. Also, issue i/o against any slots that are pending.
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*/
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if ((ad->busy_slot != -1) &&
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!(ad->port.ifs[0].status & (BUSY_STAT|DRQ_STAT))) {
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pr->cmd_issue &= ~(1 << ad->busy_slot);
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ad->busy_slot = -1;
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}
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check_cmd(s, i);
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}
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return 0;
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}
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const VMStateDescription vmstate_ahci = {
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.name = "ahci",
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.version_id = 1,
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.post_load = ahci_state_post_load,
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.fields = (VMStateField []) {
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VMSTATE_STRUCT_VARRAY_POINTER_INT32(dev, AHCIState, ports,
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vmstate_ahci_device, AHCIDevice),
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VMSTATE_UINT32(control_regs.cap, AHCIState),
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VMSTATE_UINT32(control_regs.ghc, AHCIState),
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VMSTATE_UINT32(control_regs.irqstatus, AHCIState),
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VMSTATE_UINT32(control_regs.impl, AHCIState),
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VMSTATE_UINT32(control_regs.version, AHCIState),
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VMSTATE_UINT32(idp_index, AHCIState),
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VMSTATE_INT32(ports, AHCIState),
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VMSTATE_END_OF_LIST()
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},
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};
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typedef struct SysbusAHCIState {
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typedef struct SysbusAHCIState {
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SysBusDevice busdev;
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SysBusDevice busdev;
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AHCIState ahci;
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AHCIState ahci;
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@ -1207,7 +1283,11 @@ typedef struct SysbusAHCIState {
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static const VMStateDescription vmstate_sysbus_ahci = {
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static const VMStateDescription vmstate_sysbus_ahci = {
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.name = "sysbus-ahci",
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.name = "sysbus-ahci",
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.unmigratable = 1,
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.unmigratable = 1, /* Still buggy under I/O load */
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.fields = (VMStateField []) {
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VMSTATE_AHCI(ahci, AHCIPCIState),
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VMSTATE_END_OF_LIST()
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},
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};
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};
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static void sysbus_ahci_reset(DeviceState *dev)
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static void sysbus_ahci_reset(DeviceState *dev)
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@ -305,6 +305,16 @@ typedef struct AHCIPCIState {
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AHCIState ahci;
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AHCIState ahci;
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} AHCIPCIState;
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} AHCIPCIState;
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extern const VMStateDescription vmstate_ahci;
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#define VMSTATE_AHCI(_field, _state) { \
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.name = (stringify(_field)), \
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.size = sizeof(AHCIState), \
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.vmsd = &vmstate_ahci, \
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.flags = VMS_STRUCT, \
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.offset = vmstate_offset_value(_state, _field, AHCIState), \
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}
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typedef struct NCQFrame {
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typedef struct NCQFrame {
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uint8_t fis_type;
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uint8_t fis_type;
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uint8_t c;
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uint8_t c;
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14
hw/ide/ich.c
14
hw/ide/ich.c
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@ -79,9 +79,15 @@
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#define ICH9_IDP_INDEX 0x10
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#define ICH9_IDP_INDEX 0x10
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#define ICH9_IDP_INDEX_LOG2 0x04
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#define ICH9_IDP_INDEX_LOG2 0x04
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static const VMStateDescription vmstate_ahci = {
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static const VMStateDescription vmstate_ich9_ahci = {
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.name = "ahci",
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.name = "ich9_ahci",
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.unmigratable = 1,
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.unmigratable = 1, /* Still buggy under I/O load */
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.version_id = 1,
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.fields = (VMStateField []) {
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VMSTATE_PCI_DEVICE(card, AHCIPCIState),
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VMSTATE_AHCI(ahci, AHCIPCIState),
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VMSTATE_END_OF_LIST()
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},
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};
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};
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static void pci_ich9_reset(DeviceState *dev)
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static void pci_ich9_reset(DeviceState *dev)
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@ -152,7 +158,7 @@ static void ich_ahci_class_init(ObjectClass *klass, void *data)
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k->device_id = PCI_DEVICE_ID_INTEL_82801IR;
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k->device_id = PCI_DEVICE_ID_INTEL_82801IR;
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k->revision = 0x02;
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k->revision = 0x02;
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k->class_id = PCI_CLASS_STORAGE_SATA;
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k->class_id = PCI_CLASS_STORAGE_SATA;
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dc->vmsd = &vmstate_ahci;
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dc->vmsd = &vmstate_ich9_ahci;
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dc->reset = pci_ich9_reset;
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dc->reset = pci_ich9_reset;
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}
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}
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