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d="scan'208";a="72584691" From: Anthony PERARD To: CC: Bernhard Beschow , Anthony PERARD , Stefano Stabellini , Paul Durrant , Paolo Bonzini , "Richard Henderson" , Eduardo Habkost , "Michael S. Tsirkin" , "Marcel Apfelbaum" , John Snow , , Subject: [PULL 3/3] include/hw/ide: Unexport pci_piix3_xen_ide_unplug() Date: Thu, 9 Jun 2022 15:02:02 +0100 Message-ID: <20220609140202.45227-4-anthony.perard@citrix.com> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20220609140202.45227-1-anthony.perard@citrix.com> References: <20220609140202.45227-1-anthony.perard@citrix.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-ZohoMail-DKIM: pass (identity @citrix.com) X-ZM-MESSAGEID: 1654783430007100001 From: Bernhard Beschow This function was declared in a generic and public header, implemented in a device-specific source file but only used in xen_platform. Given its 'aux' parameter, this function is more xen-specific than piix-specific. Also, the hardcoded magic constants seem to be generic and related to PCIIDEState and IDEBus rather than piix. Therefore, move this function to xen_platform, unexport it, and drop the "piix3" in the function name as well. Signed-off-by: Bernhard Beschow Reviewed-by: Paul Durrant Acked-by: Anthony PERARD Reviewed-by: Philippe Mathieu-Daud=C3=A9 Message-Id: <20220513180957.90514-4-shentey@gmail.com> Signed-off-by: Anthony PERARD --- hw/i386/xen/xen_platform.c | 48 +++++++++++++++++++++++++++++++++++++- hw/ide/piix.c | 46 ------------------------------------ include/hw/ide.h | 3 --- 3 files changed, 47 insertions(+), 50 deletions(-) diff --git a/hw/i386/xen/xen_platform.c b/hw/i386/xen/xen_platform.c index 72028449ba..a64265cca0 100644 --- a/hw/i386/xen/xen_platform.c +++ b/hw/i386/xen/xen_platform.c @@ -26,6 +26,7 @@ #include "qemu/osdep.h" #include "qapi/error.h" #include "hw/ide.h" +#include "hw/ide/pci.h" #include "hw/pci/pci.h" #include "hw/xen/xen_common.h" #include "migration/vmstate.h" @@ -134,6 +135,51 @@ static void pci_unplug_nics(PCIBus *bus) pci_for_each_device(bus, 0, unplug_nic, NULL); } =20 +/* + * The Xen HVM unplug protocol [1] specifies a mechanism to allow guests to + * request unplug of 'aux' disks (which is stated to mean all IDE disks, + * except the primary master). + * + * NOTE: The semantics of what happens if unplug of all disks and 'aux' di= sks + * is simultaneously requested is not clear. The implementation assu= mes + * that an 'all' request overrides an 'aux' request. + * + * [1] https://xenbits.xen.org/gitweb/?p=3Dxen.git;a=3Dblob;f=3Ddocs/misc/= hvm-emulated-unplug.pandoc + */ +static void pci_xen_ide_unplug(DeviceState *dev, bool aux) +{ + PCIIDEState *pci_ide; + int i; + IDEDevice *idedev; + IDEBus *idebus; + BlockBackend *blk; + + pci_ide =3D PCI_IDE(dev); + + for (i =3D aux ? 1 : 0; i < 4; i++) { + idebus =3D &pci_ide->bus[i / 2]; + blk =3D idebus->ifs[i % 2].blk; + + if (blk && idebus->ifs[i % 2].drive_kind !=3D IDE_CD) { + if (!(i % 2)) { + idedev =3D idebus->master; + } else { + idedev =3D idebus->slave; + } + + blk_drain(blk); + blk_flush(blk); + + blk_detach_dev(blk, DEVICE(idedev)); + idebus->ifs[i % 2].blk =3D NULL; + idedev->conf.blk =3D NULL; + monitor_remove_blk(blk); + blk_unref(blk); + } + } + qdev_reset_all(dev); +} + static void unplug_disks(PCIBus *b, PCIDevice *d, void *opaque) { uint32_t flags =3D *(uint32_t *)opaque; @@ -147,7 +193,7 @@ static void unplug_disks(PCIBus *b, PCIDevice *d, void = *opaque) =20 switch (pci_get_word(d->config + PCI_CLASS_DEVICE)) { case PCI_CLASS_STORAGE_IDE: - pci_piix3_xen_ide_unplug(DEVICE(d), aux); + pci_xen_ide_unplug(DEVICE(d), aux); break; =20 case PCI_CLASS_STORAGE_SCSI: diff --git a/hw/ide/piix.c b/hw/ide/piix.c index bc1b37512a..9a9b28078e 100644 --- a/hw/ide/piix.c +++ b/hw/ide/piix.c @@ -173,52 +173,6 @@ static void pci_piix_ide_realize(PCIDevice *dev, Error= **errp) } } =20 -/* - * The Xen HVM unplug protocol [1] specifies a mechanism to allow guests to - * request unplug of 'aux' disks (which is stated to mean all IDE disks, - * except the primary master). - * - * NOTE: The semantics of what happens if unplug of all disks and 'aux' di= sks - * is simultaneously requested is not clear. The implementation assu= mes - * that an 'all' request overrides an 'aux' request. - * - * [1] https://xenbits.xen.org/gitweb/?p=3Dxen.git;a=3Dblob;f=3Ddocs/misc/= hvm-emulated-unplug.pandoc - */ -int pci_piix3_xen_ide_unplug(DeviceState *dev, bool aux) -{ - PCIIDEState *pci_ide; - int i; - IDEDevice *idedev; - IDEBus *idebus; - BlockBackend *blk; - - pci_ide =3D PCI_IDE(dev); - - for (i =3D aux ? 1 : 0; i < 4; i++) { - idebus =3D &pci_ide->bus[i / 2]; - blk =3D idebus->ifs[i % 2].blk; - - if (blk && idebus->ifs[i % 2].drive_kind !=3D IDE_CD) { - if (!(i % 2)) { - idedev =3D idebus->master; - } else { - idedev =3D idebus->slave; - } - - blk_drain(blk); - blk_flush(blk); - - blk_detach_dev(blk, DEVICE(idedev)); - idebus->ifs[i % 2].blk =3D NULL; - idedev->conf.blk =3D NULL; - monitor_remove_blk(blk); - blk_unref(blk); - } - } - qdev_reset_all(dev); - return 0; -} - static void pci_piix_ide_exitfn(PCIDevice *dev) { PCIIDEState *d =3D PCI_IDE(dev); diff --git a/include/hw/ide.h b/include/hw/ide.h index c5ce5da4f4..60f1f4f714 100644 --- a/include/hw/ide.h +++ b/include/hw/ide.h @@ -8,9 +8,6 @@ ISADevice *isa_ide_init(ISABus *bus, int iobase, int iobase2, int isairq, DriveInfo *hd0, DriveInfo *hd1); =20 -/* ide-pci.c */ -int pci_piix3_xen_ide_unplug(DeviceState *dev, bool aux); - /* ide-mmio.c */ void mmio_ide_init_drives(DeviceState *dev, DriveInfo *hd0, DriveInfo *hd1= ); =20 --=20 Anthony PERARD