Merge tag 'block-pull-request' of https://gitlab.com/stefanha/qemu in…

…to staging Pull request v2: - Fix authorship information lost by the mailing list for Andrey Drobyshev # -----BEGIN PGP SIGNATURE----- # # iQEzBAABCAAdFiEEhpWov9P5fNqsNXdanKSrs4Grc8gFAmTuKQoACgkQnKSrs4Gr # c8g5GAf+JtBfWqhkytG+x7BVp8GmLCtvK+LYiLdjld1lfpLlMzdnbiXA9iJidDHl # AAMYVCoN9T81RDuEqkvSuJEuBDMGkKpJGK8NOHEfUPln1QtikLtEq1VUBRGpnsEy # 8el9hA84iP5kaQtbP+qVlxo6Y9Jm8hhemHukuIOIMLHmTJKt0utXojftvHFwwM5c # UBMJfVMo1FTdD0ywuY7e+uPPJV4/D8kXTOXkXxbQrx43ztJBT6K6N0kDDuOAlPxJ # l+U6zxvlKlB22vXt/Q4bkP9c1K8oukKOr8FjU1PxvLSZADXbbm2xq7yDPSRw9YpN # igSA2n9O8aZcp0xpviT0D6alTibl4w== # =SMYB # -----END PGP SIGNATURE----- # gpg: Signature made Tue 29 Aug 2023 13:21:14 EDT # gpg: using RSA key 8695A8BFD3F97CDAAC35775A9CA4ABB381AB73C8 # gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>" [ultimate] # gpg: aka "Stefan Hajnoczi <stefanha@gmail.com>" [ultimate] # Primary key fingerprint: 8695 A8BF D3F9 7CDA AC35 775A 9CA4 ABB3 81AB 73C8 * tag 'block-pull-request' of https://gitlab.com/stefanha/qemu: tests/qemu-iotests/197: add testcase for CoR with subclusters block/io: align requests to subcluster_size block: add subcluster_size field to BlockDriverInfo block-migration: Ensure we don't crash during migration cleanup tests/qtest: Introduce tests for UFS hw/ufs: Support for UFS logical unit hw/ufs: Support for Query Transfer Requests hw/ufs: Initial commit for emulated Universal-Flash-Storage Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
qemu · Aug 29, 2023 · 05ba96b · 05ba96b
2 parents 3df11e5 + 3f5f228
commit 05ba96b
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Showing 27 changed files with 4,932 additions and 35 deletions.
diff --git a/MAINTAINERS b/MAINTAINERS
@@ -2256,6 +2256,13 @@ F: tests/qtest/nvme-test.c
 F: docs/system/devices/nvme.rst
 T: git git://git.infradead.org/qemu-nvme.git nvme-next
 
+ufs
+M: Jeuk Kim <jeuk20.kim@samsung.com>
+S: Supported
+F: hw/ufs/*
+F: include/block/ufs.h
+F: tests/qtest/ufs-test.c
+
 megasas
 M: Hannes Reinecke <hare@suse.com>
 L: qemu-block@nongnu.org

diff --git a/block.c b/block.c
@@ -6480,6 +6480,13 @@ int coroutine_fn bdrv_co_get_info(BlockDriverState *bs, BlockDriverInfo *bdi)
     }
     memset(bdi, 0, sizeof(*bdi));
     ret = drv->bdrv_co_get_info(bs, bdi);
+    if (bdi->subcluster_size == 0) {
+        /*
+         * If the driver left this unset, subclusters are not supported.
+         * Then it is safe to treat each cluster as having only one subcluster.
+         */
+        bdi->subcluster_size = bdi->cluster_size;
+    }
     if (ret < 0) {
         return ret;
     }

diff --git a/block/io.c b/block/io.c
@@ -728,21 +728,21 @@ BdrvTrackedRequest *coroutine_fn bdrv_co_get_self_request(BlockDriverState *bs)
 }
 
 /**
- * Round a region to cluster boundaries
+ * Round a region to subcluster (if supported) or cluster boundaries
  */
 void coroutine_fn GRAPH_RDLOCK
-bdrv_round_to_clusters(BlockDriverState *bs, int64_t offset, int64_t bytes,
-                       int64_t *cluster_offset, int64_t *cluster_bytes)
+bdrv_round_to_subclusters(BlockDriverState *bs, int64_t offset, int64_t bytes,
+                          int64_t *align_offset, int64_t *align_bytes)
 {
     BlockDriverInfo bdi;
     IO_CODE();
-    if (bdrv_co_get_info(bs, &bdi) < 0 || bdi.cluster_size == 0) {
-        *cluster_offset = offset;
-        *cluster_bytes = bytes;
+    if (bdrv_co_get_info(bs, &bdi) < 0 || bdi.subcluster_size == 0) {
+        *align_offset = offset;
+        *align_bytes = bytes;
     } else {
-        int64_t c = bdi.cluster_size;
-        *cluster_offset = QEMU_ALIGN_DOWN(offset, c);
-        *cluster_bytes = QEMU_ALIGN_UP(offset - *cluster_offset + bytes, c);
+        int64_t c = bdi.subcluster_size;
+        *align_offset = QEMU_ALIGN_DOWN(offset, c);
+        *align_bytes = QEMU_ALIGN_UP(offset - *align_offset + bytes, c);
     }
 }
 
@@ -1168,8 +1168,8 @@ bdrv_co_do_copy_on_readv(BdrvChild *child, int64_t offset, int64_t bytes,
     void *bounce_buffer = NULL;
 
     BlockDriver *drv = bs->drv;
-    int64_t cluster_offset;
-    int64_t cluster_bytes;
+    int64_t align_offset;
+    int64_t align_bytes;
     int64_t skip_bytes;
     int ret;
     int max_transfer = MIN_NON_ZERO(bs->bl.max_transfer,
@@ -1203,28 +1203,28 @@ bdrv_co_do_copy_on_readv(BdrvChild *child, int64_t offset, int64_t bytes,
      * BDRV_REQUEST_MAX_BYTES (even when the original read did not), which
      * is one reason we loop rather than doing it all at once.
      */
-    bdrv_round_to_clusters(bs, offset, bytes, &cluster_offset, &cluster_bytes);
-    skip_bytes = offset - cluster_offset;
+    bdrv_round_to_subclusters(bs, offset, bytes, &align_offset, &align_bytes);
+    skip_bytes = offset - align_offset;
 
     trace_bdrv_co_do_copy_on_readv(bs, offset, bytes,
-                                   cluster_offset, cluster_bytes);
+                                   align_offset, align_bytes);
 
-    while (cluster_bytes) {
+    while (align_bytes) {
         int64_t pnum;
 
         if (skip_write) {
             ret = 1; /* "already allocated", so nothing will be copied */
-            pnum = MIN(cluster_bytes, max_transfer);
+            pnum = MIN(align_bytes, max_transfer);
         } else {
-            ret = bdrv_is_allocated(bs, cluster_offset,
-                                    MIN(cluster_bytes, max_transfer), &pnum);
+            ret = bdrv_is_allocated(bs, align_offset,
+                                    MIN(align_bytes, max_transfer), &pnum);
             if (ret < 0) {
                 /*
                  * Safe to treat errors in querying allocation as if
                  * unallocated; we'll probably fail again soon on the
                  * read, but at least that will set a decent errno.
                  */
-                pnum = MIN(cluster_bytes, max_transfer);
+                pnum = MIN(align_bytes, max_transfer);
             }
 
             /* Stop at EOF if the image ends in the middle of the cluster */
@@ -1242,7 +1242,7 @@ bdrv_co_do_copy_on_readv(BdrvChild *child, int64_t offset, int64_t bytes,
             /* Must copy-on-read; use the bounce buffer */
             pnum = MIN(pnum, MAX_BOUNCE_BUFFER);
             if (!bounce_buffer) {
-                int64_t max_we_need = MAX(pnum, cluster_bytes - pnum);
+                int64_t max_we_need = MAX(pnum, align_bytes - pnum);
                 int64_t max_allowed = MIN(max_transfer, MAX_BOUNCE_BUFFER);
                 int64_t bounce_buffer_len = MIN(max_we_need, max_allowed);
 
@@ -1254,7 +1254,7 @@ bdrv_co_do_copy_on_readv(BdrvChild *child, int64_t offset, int64_t bytes,
             }
             qemu_iovec_init_buf(&local_qiov, bounce_buffer, pnum);
 
-            ret = bdrv_driver_preadv(bs, cluster_offset, pnum,
+            ret = bdrv_driver_preadv(bs, align_offset, pnum,
                                      &local_qiov, 0, 0);
             if (ret < 0) {
                 goto err;
@@ -1266,13 +1266,13 @@ bdrv_co_do_copy_on_readv(BdrvChild *child, int64_t offset, int64_t bytes,
                 /* FIXME: Should we (perhaps conditionally) be setting
                  * BDRV_REQ_MAY_UNMAP, if it will allow for a sparser copy
                  * that still correctly reads as zero? */
-                ret = bdrv_co_do_pwrite_zeroes(bs, cluster_offset, pnum,
+                ret = bdrv_co_do_pwrite_zeroes(bs, align_offset, pnum,
                                                BDRV_REQ_WRITE_UNCHANGED);
             } else {
                 /* This does not change the data on the disk, it is not
                  * necessary to flush even in cache=writethrough mode.
                  */
-                ret = bdrv_driver_pwritev(bs, cluster_offset, pnum,
+                ret = bdrv_driver_pwritev(bs, align_offset, pnum,
                                           &local_qiov, 0,
                                           BDRV_REQ_WRITE_UNCHANGED);
             }
@@ -1301,8 +1301,8 @@ bdrv_co_do_copy_on_readv(BdrvChild *child, int64_t offset, int64_t bytes,
             }
         }
 
-        cluster_offset += pnum;
-        cluster_bytes -= pnum;
+        align_offset += pnum;
+        align_bytes -= pnum;
         progress += pnum - skip_bytes;
         skip_bytes = 0;
     }

diff --git a/block/mirror.c b/block/mirror.c
@@ -283,8 +283,8 @@ static int coroutine_fn mirror_cow_align(MirrorBlockJob *s, int64_t *offset,
     need_cow |= !test_bit((*offset + *bytes - 1) / s->granularity,
                           s->cow_bitmap);
     if (need_cow) {
-        bdrv_round_to_clusters(blk_bs(s->target), *offset, *bytes,
-                               &align_offset, &align_bytes);
+        bdrv_round_to_subclusters(blk_bs(s->target), *offset, *bytes,
+                                  &align_offset, &align_bytes);
     }
 
     if (align_bytes > max_bytes) {
@@ -576,8 +576,8 @@ static void coroutine_fn mirror_iteration(MirrorBlockJob *s)
             int64_t target_offset;
             int64_t target_bytes;
             WITH_GRAPH_RDLOCK_GUARD() {
-                bdrv_round_to_clusters(blk_bs(s->target), offset, io_bytes,
-                                       &target_offset, &target_bytes);
+                bdrv_round_to_subclusters(blk_bs(s->target), offset, io_bytes,
+                                          &target_offset, &target_bytes);
             }
             if (target_offset == offset &&
                 target_bytes == io_bytes) {

diff --git a/block/qcow2.c b/block/qcow2.c
@@ -5197,6 +5197,7 @@ qcow2_co_get_info(BlockDriverState *bs, BlockDriverInfo *bdi)
 {
     BDRVQcow2State *s = bs->opaque;
     bdi->cluster_size = s->cluster_size;
+    bdi->subcluster_size = s->subcluster_size;
     bdi->vm_state_offset = qcow2_vm_state_offset(s);
     bdi->is_dirty = s->incompatible_features & QCOW2_INCOMPAT_DIRTY;
     return 0;

diff --git a/docs/specs/pci-ids.rst b/docs/specs/pci-ids.rst
@@ -92,6 +92,8 @@ PCI devices (other than virtio):
   PCI PVPanic device (``-device pvpanic-pci``)
 1b36:0012
   PCI ACPI ERST device (``-device acpi-erst``)
+1b36:0013
+  PCI UFS device (``-device ufs``)
 
 All these devices are documented in :doc:`index`.
 

diff --git a/hw/Kconfig b/hw/Kconfig
@@ -38,6 +38,7 @@ source smbios/Kconfig
 source ssi/Kconfig
 source timer/Kconfig
 source tpm/Kconfig
+source ufs/Kconfig
 source usb/Kconfig
 source virtio/Kconfig
 source vfio/Kconfig

diff --git a/hw/meson.build b/hw/meson.build
@@ -37,6 +37,7 @@ subdir('smbios')
 subdir('ssi')
 subdir('timer')
 subdir('tpm')
+subdir('ufs')
 subdir('usb')
 subdir('vfio')
 subdir('virtio')

diff --git a/hw/ufs/Kconfig b/hw/ufs/Kconfig
@@ -0,0 +1,4 @@
+config UFS_PCI
+    bool
+    default y if PCI_DEVICES
+    depends on PCI