From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([208.118.235.92]:33040) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TvmIU-000688-8Y for qemu-devel@nongnu.org; Thu, 17 Jan 2013 05:02:19 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1TvmIP-0008Rc-0A for qemu-devel@nongnu.org; Thu, 17 Jan 2013 05:02:10 -0500 Received: from mx1.redhat.com ([209.132.183.28]:39003) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1TvmIO-0008RV-P5 for qemu-devel@nongnu.org; Thu, 17 Jan 2013 05:02:04 -0500 Received: from int-mx01.intmail.prod.int.phx2.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id r0HA24kc004154 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for ; Thu, 17 Jan 2013 05:02:04 -0500 From: Kevin Wolf Date: Thu, 17 Jan 2013 11:01:55 +0100 Message-Id: <1358416915-4103-4-git-send-email-kwolf@redhat.com> In-Reply-To: <1358416915-4103-1-git-send-email-kwolf@redhat.com> References: <1358416915-4103-1-git-send-email-kwolf@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Subject: [Qemu-devel] [PATCH v4 3/3] ahci: Add migration support List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: kwolf@redhat.com, stefanha@redhat.com, quintela@redhat.com From: Jason Baron 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 F=C3=A4rber Signed-off-by: Jason Baron Signed-off-by: Kevin Wolf --- Changes from v3: - Update the types of some fields (VMSTATE_INT32 -> VMSTATE_BOOL) - post_load: Check that BUSY_STAT and DRQ_STAT aren't set before clearing busy_port - Change vmstate_ich9_ahci.name from ahci to ich9_ahci Changes from v2: -migrate all relevant ahci fields -flush any pending i/o in 'post_load' Changes from v1: -extend Andreas F=C3=A4rber's patch --- hw/ide/ahci.c | 81 +++++++++++++++++++++++++++++++++++++++++++++++++++= +++++- hw/ide/ahci.h | 10 +++++++ hw/ide/ich.c | 13 ++++++--- 3 files changed, 99 insertions(+), 5 deletions(-) diff --git a/hw/ide/ahci.c b/hw/ide/ahci.c index f91cff2..a645e22 100644 --- a/hw/ide/ahci.c +++ b/hw/ide/ahci.c @@ -1199,6 +1199,82 @@ void ahci_reset(AHCIState *s) } } =20 +static const VMStateDescription vmstate_ahci_device =3D { + .name =3D "ahci port", + .version_id =3D 1, + .fields =3D (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 =3D opaque; + + for (i =3D 0; i < s->ports; i++) { + ad =3D &s->dev[i]; + AHCIPortRegs *pr =3D &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 !=3D -1) && + !(ad->port.ifs[0].status & (BUSY_STAT|DRQ_STAT))) { + pr->cmd_issue &=3D ~(1 << ad->busy_slot); + ad->busy_slot =3D -1; + } + check_cmd(s, i); + } + + return 0; +} + +const VMStateDescription vmstate_ahci =3D { + .name =3D "ahci", + .version_id =3D 1, + .post_load =3D ahci_state_post_load, + .fields =3D (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 +1283,10 @@ typedef struct SysbusAHCIState { =20 static const VMStateDescription vmstate_sysbus_ahci =3D { .name =3D "sysbus-ahci", - .unmigratable =3D 1, + .fields =3D (VMStateField []) { + VMSTATE_AHCI(ahci, AHCIPCIState), + VMSTATE_END_OF_LIST() + }, }; =20 static void sysbus_ahci_reset(DeviceState *dev) diff --git a/hw/ide/ahci.h b/hw/ide/ahci.h index 70d3b57..85f37fe 100644 --- a/hw/ide/ahci.h +++ b/hw/ide/ahci.h @@ -305,6 +305,16 @@ typedef struct AHCIPCIState { AHCIState ahci; } AHCIPCIState; =20 +extern const VMStateDescription vmstate_ahci; + +#define VMSTATE_AHCI(_field, _state) { \ + .name =3D (stringify(_field)), \ + .size =3D sizeof(AHCIState), \ + .vmsd =3D &vmstate_ahci, \ + .flags =3D VMS_STRUCT, \ + .offset =3D vmstate_offset_value(_state, _field, AHCIState), \ +} + typedef struct NCQFrame { uint8_t fis_type; uint8_t c; diff --git a/hw/ide/ich.c b/hw/ide/ich.c index 1fb803d..0897bb7 100644 --- a/hw/ide/ich.c +++ b/hw/ide/ich.c @@ -79,9 +79,14 @@ #define ICH9_IDP_INDEX 0x10 #define ICH9_IDP_INDEX_LOG2 0x04 =20 -static const VMStateDescription vmstate_ahci =3D { - .name =3D "ahci", - .unmigratable =3D 1, +static const VMStateDescription vmstate_ich9_ahci =3D { + .name =3D "ich9_ahci", + .version_id =3D 1, + .fields =3D (VMStateField []) { + VMSTATE_PCI_DEVICE(card, AHCIPCIState), + VMSTATE_AHCI(ahci, AHCIPCIState), + VMSTATE_END_OF_LIST() + }, }; =20 static void pci_ich9_reset(DeviceState *dev) @@ -152,7 +157,7 @@ static void ich_ahci_class_init(ObjectClass *klass, v= oid *data) k->device_id =3D PCI_DEVICE_ID_INTEL_82801IR; k->revision =3D 0x02; k->class_id =3D PCI_CLASS_STORAGE_SATA; - dc->vmsd =3D &vmstate_ahci; + dc->vmsd =3D &vmstate_ich9_ahci; dc->reset =3D pci_ich9_reset; } =20 --=20 1.7.6.5