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From: Dmitry Fomichev <dmitry.fomichev@wdc.com>
To: Paolo Bonzini <pbonzini@redhat.com>,
	Kevin Wolf <kwolf@redhat.com>, Max Reitz <mreitz@redhat.com>,
	"Michael S . Tsirkin" <mst@redhat.com>,
	Stefan Hajnoczi <stefanha@redhat.com>,
	John Snow <jsnow@redhat.com>
Cc: Dmitry Fomichev <dmitry.fomichev@wdc.com>,
	Alistair Francis <alistair.francis@wdc.com>,
	qemu-devel@nongnu.org, qemu-block@nongnu.org
Subject: [Qemu-devel] [PATCH v5 3/4] block/ide/scsi: Set BLK_PERM_SUPPORT_ZONED
Date: Fri, 23 Aug 2019 15:49:26 -0400
Message-ID: <20190823194927.23278-4-dmitry.fomichev@wdc.com> (raw)
In-Reply-To: <20190823194927.23278-1-dmitry.fomichev@wdc.com>

Added a new boolean argument to blkconf_apply_backend_options()
to let the common block code know whether the chosen block
backend can handle zoned block devices or not.

blkconf_apply_backend_options() then sets BLK_PERM_SUPPORT_ZONED
permission accordingly. The raw code can then use this permission
to allow or deny opening a zone device by a particular block driver.

Signed-off-by: Dmitry Fomichev <dmitry.fomichev@wdc.com>
Acked-by: Paul Durrant <paul.durrant@citrix.com>
---
 hw/block/block.c         |  8 ++++++--
 hw/block/fdc.c           |  5 +++--
 hw/block/nvme.c          |  2 +-
 hw/block/virtio-blk.c    |  2 +-
 hw/block/xen-block.c     |  2 +-
 hw/ide/qdev.c            |  2 +-
 hw/scsi/scsi-disk.c      | 13 +++++++------
 hw/scsi/scsi-generic.c   |  2 +-
 hw/usb/dev-storage.c     |  2 +-
 include/hw/block/block.h |  3 ++-
 10 files changed, 24 insertions(+), 17 deletions(-)

diff --git a/hw/block/block.c b/hw/block/block.c
index bf56c7612b..23fbe4d567 100644
--- a/hw/block/block.c
+++ b/hw/block/block.c
@@ -86,7 +86,8 @@ void blkconf_blocksizes(BlockConf *conf)
 }
 
 bool blkconf_apply_backend_options(BlockConf *conf, bool readonly,
-                                   bool resizable, Error **errp)
+                                   bool resizable, bool zoned_support,
+                                   Error **errp)
 {
     BlockBackend *blk = conf->blk;
     BlockdevOnError rerror, werror;
@@ -98,9 +99,12 @@ bool blkconf_apply_backend_options(BlockConf *conf, bool readonly,
     if (!readonly) {
         perm |= BLK_PERM_WRITE;
     }
+    if (zoned_support) {
+        perm |= BLK_PERM_SUPPORT_ZONED;
+    }
 
     shared_perm = BLK_PERM_CONSISTENT_READ | BLK_PERM_WRITE_UNCHANGED |
-                  BLK_PERM_GRAPH_MOD;
+                  BLK_PERM_GRAPH_MOD | BLK_PERM_SUPPORT_ZONED;
     if (resizable) {
         shared_perm |= BLK_PERM_RESIZE;
     }
diff --git a/hw/block/fdc.c b/hw/block/fdc.c
index ac5d31e8c1..c5f41b3eb6 100644
--- a/hw/block/fdc.c
+++ b/hw/block/fdc.c
@@ -477,7 +477,7 @@ static void fd_change_cb(void *opaque, bool load, Error **errp)
     } else {
         if (!blkconf_apply_backend_options(drive->conf,
                                            blk_is_read_only(drive->blk), false,
-                                           errp)) {
+                                           false, errp)) {
             return;
         }
     }
@@ -569,7 +569,8 @@ static void floppy_drive_realize(DeviceState *qdev, Error **errp)
     dev->conf.rerror = BLOCKDEV_ON_ERROR_AUTO;
     dev->conf.werror = BLOCKDEV_ON_ERROR_AUTO;
 
-    if (!blkconf_apply_backend_options(&dev->conf, read_only, false, errp)) {
+    if (!blkconf_apply_backend_options(&dev->conf, read_only, false, false,
+    				       errp)) {
         return;
     }
 
diff --git a/hw/block/nvme.c b/hw/block/nvme.c
index 12d8254250..07f08d0768 100644
--- a/hw/block/nvme.c
+++ b/hw/block/nvme.c
@@ -1334,7 +1334,7 @@ static void nvme_realize(PCIDevice *pci_dev, Error **errp)
     }
     blkconf_blocksizes(&n->conf);
     if (!blkconf_apply_backend_options(&n->conf, blk_is_read_only(n->conf.blk),
-                                       false, errp)) {
+                                       false, false, errp)) {
         return;
     }
 
diff --git a/hw/block/virtio-blk.c b/hw/block/virtio-blk.c
index 18851601cb..8be62903e2 100644
--- a/hw/block/virtio-blk.c
+++ b/hw/block/virtio-blk.c
@@ -1127,7 +1127,7 @@ static void virtio_blk_device_realize(DeviceState *dev, Error **errp)
 
     if (!blkconf_apply_backend_options(&conf->conf,
                                        blk_is_read_only(conf->conf.blk), true,
-                                       errp)) {
+                                       false, errp)) {
         return;
     }
     s->original_wce = blk_enable_write_cache(conf->conf.blk);
diff --git a/hw/block/xen-block.c b/hw/block/xen-block.c
index f77343db60..57fe970908 100644
--- a/hw/block/xen-block.c
+++ b/hw/block/xen-block.c
@@ -229,7 +229,7 @@ static void xen_block_realize(XenDevice *xendev, Error **errp)
     }
 
     if (!blkconf_apply_backend_options(conf, blockdev->info & VDISK_READONLY,
-                                       true, errp)) {
+                                       true, false, errp)) {
         return;
     }
 
diff --git a/hw/ide/qdev.c b/hw/ide/qdev.c
index 6fba6b62b8..a57a8f1a8f 100644
--- a/hw/ide/qdev.c
+++ b/hw/ide/qdev.c
@@ -200,7 +200,7 @@ static void ide_dev_initfn(IDEDevice *dev, IDEDriveKind kind, Error **errp)
         }
     }
     if (!blkconf_apply_backend_options(&dev->conf, kind == IDE_CD,
-                                       kind != IDE_CD, errp)) {
+                                       kind != IDE_CD, false, errp)) {
         return;
     }
 
diff --git a/hw/scsi/scsi-disk.c b/hw/scsi/scsi-disk.c
index 915641a0f1..8a57caafd7 100644
--- a/hw/scsi/scsi-disk.c
+++ b/hw/scsi/scsi-disk.c
@@ -2318,7 +2318,7 @@ static void scsi_disk_unit_attention_reported(SCSIDevice *dev)
     }
 }
 
-static void scsi_realize(SCSIDevice *dev, Error **errp)
+static void scsi_realize(SCSIDevice *dev, bool zoned_support, Error **errp)
 {
     SCSIDiskState *s = DO_UPCAST(SCSIDiskState, qdev, dev);
     bool read_only;
@@ -2362,7 +2362,8 @@ static void scsi_realize(SCSIDevice *dev, Error **errp)
     }
 
     if (!blkconf_apply_backend_options(&dev->conf, read_only,
-                                       dev->type == TYPE_DISK, errp)) {
+                                       dev->type == TYPE_DISK, zoned_support,
+                                       errp)) {
         return;
     }
 
@@ -2421,7 +2422,7 @@ static void scsi_hd_realize(SCSIDevice *dev, Error **errp)
     if (!s->product) {
         s->product = g_strdup("QEMU HARDDISK");
     }
-    scsi_realize(&s->qdev, errp);
+    scsi_realize(&s->qdev, false, errp);
     if (ctx) {
         aio_context_release(ctx);
     }
@@ -2449,7 +2450,7 @@ static void scsi_cd_realize(SCSIDevice *dev, Error **errp)
     if (!s->product) {
         s->product = g_strdup("QEMU CD-ROM");
     }
-    scsi_realize(&s->qdev, errp);
+    scsi_realize(&s->qdev, false, errp);
     aio_context_release(ctx);
 }
 
@@ -2459,7 +2460,7 @@ static void scsi_disk_realize(SCSIDevice *dev, Error **errp)
     Error *local_err = NULL;
 
     if (!dev->conf.blk) {
-        scsi_realize(dev, &local_err);
+        scsi_realize(dev, false, &local_err);
         assert(local_err);
         error_propagate(errp, local_err);
         return;
@@ -2652,7 +2653,7 @@ static void scsi_block_realize(SCSIDevice *dev, Error **errp)
      */
     s->features |= (1 << SCSI_DISK_F_NO_REMOVABLE_DEVOPS);
 
-    scsi_realize(&s->qdev, errp);
+    scsi_realize(&s->qdev, true, errp);
     scsi_generic_read_device_inquiry(&s->qdev);
 
 out:
diff --git a/hw/scsi/scsi-generic.c b/hw/scsi/scsi-generic.c
index e7798ebcd0..ccce710497 100644
--- a/hw/scsi/scsi-generic.c
+++ b/hw/scsi/scsi-generic.c
@@ -692,7 +692,7 @@ static void scsi_generic_realize(SCSIDevice *s, Error **errp)
     }
     if (!blkconf_apply_backend_options(&s->conf,
                                        blk_is_read_only(s->conf.blk),
-                                       true, errp)) {
+                                       true, true, errp)) {
         return;
     }
 
diff --git a/hw/usb/dev-storage.c b/hw/usb/dev-storage.c
index 8545193488..c75c0dd6a5 100644
--- a/hw/usb/dev-storage.c
+++ b/hw/usb/dev-storage.c
@@ -603,7 +603,7 @@ static void usb_msd_storage_realize(USBDevice *dev, Error **errp)
 
     blkconf_blocksizes(&s->conf);
     if (!blkconf_apply_backend_options(&s->conf, blk_is_read_only(blk), true,
-                                       errp)) {
+                                       false, errp)) {
         return;
     }
 
diff --git a/include/hw/block/block.h b/include/hw/block/block.h
index 607539057a..f988edc87e 100644
--- a/include/hw/block/block.h
+++ b/include/hw/block/block.h
@@ -85,7 +85,8 @@ bool blkconf_geometry(BlockConf *conf, int *trans,
                       Error **errp);
 void blkconf_blocksizes(BlockConf *conf);
 bool blkconf_apply_backend_options(BlockConf *conf, bool readonly,
-                                   bool resizable, Error **errp);
+                                   bool resizable, bool zoned_support,
+                                   Error **errp);
 
 /* Hard disk geometry */
 
-- 
2.21.0



  parent reply index

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-23 19:49 [Qemu-devel] [PATCH v5 0/4] virtio/block: handle zoned backing devices Dmitry Fomichev
2019-08-23 19:49 ` [Qemu-devel] [PATCH v5 1/4] block: Add zoned device model property Dmitry Fomichev
2019-08-28  9:21   ` [Qemu-devel] [Qemu-block] " Stefan Hajnoczi
2019-08-23 19:49 ` [Qemu-devel] [PATCH v5 2/4] raw: Recognize zoned backing devices Dmitry Fomichev
2019-08-28  9:32   ` [Qemu-devel] [Qemu-block] " Stefan Hajnoczi
2019-08-23 19:49 ` Dmitry Fomichev [this message]
2019-08-28  9:34   ` [Qemu-devel] [Qemu-block] [PATCH v5 3/4] block/ide/scsi: Set BLK_PERM_SUPPORT_ZONED Stefan Hajnoczi
2019-08-23 19:49 ` [Qemu-devel] [PATCH v5 4/4] raw: Don't open ZBDs if backend can't handle them Dmitry Fomichev
2019-08-28  9:38   ` Stefan Hajnoczi
2019-08-23 20:08 ` [Qemu-devel] [PATCH v5 0/4] virtio/block: handle zoned backing devices no-reply
2019-08-28  9:41 ` [Qemu-devel] [Qemu-block] " Stefan Hajnoczi
2019-09-04 21:11   ` Dmitry Fomichev

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