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ahci: Add migration support

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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>
This commit is contained in:
Jason Baron 2013-01-04 14:44:42 -05:00 committed by Kevin Wolf
parent 4ac557c89b
commit a26230218d
3 changed files with 101 additions and 5 deletions
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82
hw/ide/ahci.c
View File

@ -1199,6 +1199,82 @@ void ahci_reset(AHCIState *s)
}
}
static const VMStateDescription vmstate_ahci_device = {
.name = "ahci port",
.version_id = 1,
.fields = (VMStateField []) {
VMSTATE_IDE_BUS(port, AHCIDevice),
VMSTATE_UINT32(port_state, AHCIDevice),
VMSTATE_UINT32(finished, AHCIDevice),
VMSTATE_UINT32(port_regs.lst_addr, AHCIDevice),
VMSTATE_UINT32(port_regs.lst_addr_hi, AHCIDevice),
VMSTATE_UINT32(port_regs.fis_addr, AHCIDevice),
VMSTATE_UINT32(port_regs.fis_addr_hi, AHCIDevice),
VMSTATE_UINT32(port_regs.irq_stat, AHCIDevice),
VMSTATE_UINT32(port_regs.irq_mask, AHCIDevice),
VMSTATE_UINT32(port_regs.cmd, AHCIDevice),
VMSTATE_UINT32(port_regs.tfdata, AHCIDevice),
VMSTATE_UINT32(port_regs.sig, AHCIDevice),
VMSTATE_UINT32(port_regs.scr_stat, AHCIDevice),
VMSTATE_UINT32(port_regs.scr_ctl, AHCIDevice),
VMSTATE_UINT32(port_regs.scr_err, AHCIDevice),
VMSTATE_UINT32(port_regs.scr_act, AHCIDevice),
VMSTATE_UINT32(port_regs.cmd_issue, AHCIDevice),
VMSTATE_BOOL(done_atapi_packet, AHCIDevice),
VMSTATE_INT32(busy_slot, AHCIDevice),
VMSTATE_BOOL(init_d2h_sent, AHCIDevice),
VMSTATE_END_OF_LIST()
},
};
static int ahci_state_post_load(void *opaque, int version_id)
{
int i;
struct AHCIDevice *ad;
AHCIState *s = opaque;
for (i = 0; i < s->ports; i++) {
ad = &s->dev[i];
AHCIPortRegs *pr = &ad->port_regs;
map_page(&ad->lst,
((uint64_t)pr->lst_addr_hi << 32) | pr->lst_addr, 1024);
map_page(&ad->res_fis,
((uint64_t)pr->fis_addr_hi << 32) | pr->fis_addr, 256);
/*
* All pending i/o should be flushed out on a migrate. However,
* we might not have cleared the busy_slot since this is done
* in a bh. Also, issue i/o against any slots that are pending.
*/
if ((ad->busy_slot != -1) &&
!(ad->port.ifs[0].status & (BUSY_STAT|DRQ_STAT))) {
pr->cmd_issue &= ~(1 << ad->busy_slot);
ad->busy_slot = -1;
}
check_cmd(s, i);
}
return 0;
}
const VMStateDescription vmstate_ahci = {
.name = "ahci",
.version_id = 1,
.post_load = ahci_state_post_load,
.fields = (VMStateField []) {
VMSTATE_STRUCT_VARRAY_POINTER_INT32(dev, AHCIState, ports,
vmstate_ahci_device, AHCIDevice),
VMSTATE_UINT32(control_regs.cap, AHCIState),
VMSTATE_UINT32(control_regs.ghc, AHCIState),
VMSTATE_UINT32(control_regs.irqstatus, AHCIState),
VMSTATE_UINT32(control_regs.impl, AHCIState),
VMSTATE_UINT32(control_regs.version, AHCIState),
VMSTATE_UINT32(idp_index, AHCIState),
VMSTATE_INT32(ports, AHCIState),
VMSTATE_END_OF_LIST()
},
};
typedef struct SysbusAHCIState {
SysBusDevice busdev;
AHCIState ahci;
@ -1207,7 +1283,11 @@ typedef struct SysbusAHCIState {
static const VMStateDescription vmstate_sysbus_ahci = {
.name = "sysbus-ahci",
.unmigratable = 1,
.unmigratable = 1, /* Still buggy under I/O load */
.fields = (VMStateField []) {
VMSTATE_AHCI(ahci, AHCIPCIState),
VMSTATE_END_OF_LIST()
},
};
static void sysbus_ahci_reset(DeviceState *dev)

10
hw/ide/ahci.h
View File

@ -305,6 +305,16 @@ typedef struct AHCIPCIState {
AHCIState ahci;
} AHCIPCIState;
extern const VMStateDescription vmstate_ahci;
#define VMSTATE_AHCI(_field, _state) { \
.name = (stringify(_field)), \
.size = sizeof(AHCIState), \
.vmsd = &vmstate_ahci, \
.flags = VMS_STRUCT, \
.offset = vmstate_offset_value(_state, _field, AHCIState), \
}
typedef struct NCQFrame {
uint8_t fis_type;
uint8_t c;

14
hw/ide/ich.c
View File

@ -79,9 +79,15 @@
#define ICH9_IDP_INDEX 0x10
#define ICH9_IDP_INDEX_LOG2 0x04
static const VMStateDescription vmstate_ahci = {
.name = "ahci",
.unmigratable = 1,
static const VMStateDescription vmstate_ich9_ahci = {
.name = "ich9_ahci",
.unmigratable = 1, /* Still buggy under I/O load */
.version_id = 1,
.fields = (VMStateField []) {
VMSTATE_PCI_DEVICE(card, AHCIPCIState),
VMSTATE_AHCI(ahci, AHCIPCIState),
VMSTATE_END_OF_LIST()
},
};
static void pci_ich9_reset(DeviceState *dev)
@ -152,7 +158,7 @@ static void ich_ahci_class_init(ObjectClass *klass, void *data)
k->device_id = PCI_DEVICE_ID_INTEL_82801IR;
k->revision = 0x02;
k->class_id = PCI_CLASS_STORAGE_SATA;
dc->vmsd = &vmstate_ahci;
dc->vmsd = &vmstate_ich9_ahci;
dc->reset = pci_ich9_reset;
}