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Block layer patches

Browse source 
- Fix graph lock related deadlocks with the stream job
 - ahci: Fix legacy software reset
 - ide/via: Fix switch between compatibility and native mode
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Merge tag 'for-upstream' of https://repo.or.cz/qemu/kevin into staging

Block layer patches

- Fix graph lock related deadlocks with the stream job
- ahci: Fix legacy software reset
- ide/via: Fix switch between compatibility and native mode

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# gpg: Signature made Tue 21 Nov 2023 06:50:34 EST
# gpg:                using RSA key DC3DEB159A9AF95D3D7456FE7F09B272C88F2FD6
# gpg:                issuer "kwolf@redhat.com"
# gpg: Good signature from "Kevin Wolf <kwolf@redhat.com>" [full]
# Primary key fingerprint: DC3D EB15 9A9A F95D 3D74  56FE 7F09 B272 C88F 2FD6

* tag 'for-upstream' of https://repo.or.cz/qemu/kevin:
  hw/ide/via: implement legacy/native mode switching
  ide/via: don't attempt to set default BAR addresses
  ide/pci: introduce pci_ide_update_mode() function
  ide/ioport: move ide_portio_list[] and ide_portio_list2[] definitions to IDE core
  iotests: Test two stream jobs in a single iothread
  stream: Fix AioContext locking during bdrv_graph_wrlock()
  block: Fix deadlocks in bdrv_graph_wrunlock()
  block: Fix bdrv_graph_wrlock() call in blk_remove_bs()
  hw/ide/ahci: fix legacy software reset

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Stefan Hajnoczi 2023-11-21 10:26:43 -05:00
parent c14ae763d5 debb491166
commit d50a13424e
29 changed files with 374 additions and 97 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

39
block.c
View file

@ -1713,7 +1713,7 @@ open_failed:
bdrv_unref_child(bs, bs->file);
assert(!bs->file);
}
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(NULL);
g_free(bs->opaque);
bs->opaque = NULL;
@ -3577,7 +3577,7 @@ int bdrv_set_backing_hd(BlockDriverState *bs, BlockDriverState *backing_hd,
bdrv_drained_begin(drain_bs);
bdrv_graph_wrlock(backing_hd);
ret = bdrv_set_backing_hd_drained(bs, backing_hd, errp);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(backing_hd);
bdrv_drained_end(drain_bs);
bdrv_unref(drain_bs);
@ -3796,7 +3796,7 @@ BdrvChild *bdrv_open_child(const char *filename,
child = bdrv_attach_child(parent, bs, bdref_key, child_class, child_role,
errp);
aio_context_release(ctx);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(NULL);
return child;
}
@ -4652,7 +4652,7 @@ int bdrv_reopen_multiple(BlockReopenQueue *bs_queue, Error **errp)
bdrv_graph_wrlock(NULL);
tran_commit(tran);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(NULL);
QTAILQ_FOREACH_REVERSE(bs_entry, bs_queue, entry) {
BlockDriverState *bs = bs_entry->state.bs;
@ -4671,7 +4671,7 @@ int bdrv_reopen_multiple(BlockReopenQueue *bs_queue, Error **errp)
abort:
bdrv_graph_wrlock(NULL);
tran_abort(tran);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(NULL);
QTAILQ_FOREACH_SAFE(bs_entry, bs_queue, entry, next) {
if (bs_entry->prepared) {
@ -4857,7 +4857,7 @@ bdrv_reopen_parse_file_or_backing(BDRVReopenState *reopen_state,
ret = bdrv_set_file_or_backing_noperm(bs, new_child_bs, is_backing,
tran, errp);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock_ctx(ctx);
if (old_ctx != ctx) {
aio_context_release(ctx);
@ -5216,7 +5216,7 @@ static void bdrv_close(BlockDriverState *bs)
assert(!bs->backing);
assert(!bs->file);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(bs);
g_free(bs->opaque);
bs->opaque = NULL;
@ -5511,7 +5511,7 @@ int bdrv_drop_filter(BlockDriverState *bs, Error **errp)
bdrv_drained_begin(child_bs);
bdrv_graph_wrlock(bs);
ret = bdrv_replace_node_common(bs, child_bs, true, true, errp);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(bs);
bdrv_drained_end(child_bs);
return ret;
@ -5593,7 +5593,7 @@ out:
tran_finalize(tran, ret);
bdrv_refresh_limits(bs_top, NULL, NULL);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(bs_top);
bdrv_drained_end(bs_top);
bdrv_drained_end(bs_new);
@ -5631,7 +5631,7 @@ int bdrv_replace_child_bs(BdrvChild *child, BlockDriverState *new_bs,
tran_finalize(tran, ret);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(new_bs);
bdrv_drained_end(old_bs);
bdrv_drained_end(new_bs);
bdrv_unref(old_bs);
@ -5720,7 +5720,7 @@ BlockDriverState *bdrv_insert_node(BlockDriverState *bs, QDict *options,
bdrv_drained_begin(new_node_bs);
bdrv_graph_wrlock(new_node_bs);
ret = bdrv_replace_node(bs, new_node_bs, errp);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(new_node_bs);
bdrv_drained_end(new_node_bs);
bdrv_drained_end(bs);
bdrv_unref(bs);
@ -6015,7 +6015,7 @@ int bdrv_drop_intermediate(BlockDriverState *top, BlockDriverState *base,
* That's a FIXME.
*/
bdrv_replace_node_common(top, base, false, false, &local_err);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(base);
if (local_err) {
error_report_err(local_err);
@ -6052,7 +6052,7 @@ int bdrv_drop_intermediate(BlockDriverState *top, BlockDriverState *base,
goto exit;
exit_wrlock:
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(base);
exit:
bdrv_drained_end(base);
bdrv_unref(top);
@ -7254,6 +7254,16 @@ void bdrv_unref(BlockDriverState *bs)
}
}
static void bdrv_schedule_unref_bh(void *opaque)
{
BlockDriverState *bs = opaque;
AioContext *ctx = bdrv_get_aio_context(bs);
aio_context_acquire(ctx);
bdrv_unref(bs);
aio_context_release(ctx);
}
/*
* Release a BlockDriverState reference while holding the graph write lock.
*
@ -7267,8 +7277,7 @@ void bdrv_schedule_unref(BlockDriverState *bs)
if (!bs) {
return;
}
aio_bh_schedule_oneshot(qemu_get_aio_context(),
(QEMUBHFunc *) bdrv_unref, bs);
aio_bh_schedule_oneshot(qemu_get_aio_context(), bdrv_schedule_unref_bh, bs);
}
struct BdrvOpBlocker {

2
block/backup.c
View file

@ -499,7 +499,7 @@ BlockJob *backup_job_create(const char *job_id, BlockDriverState *bs,
bdrv_graph_wrlock(target);
block_job_add_bdrv(&job->common, "target", target, 0, BLK_PERM_ALL,
&error_abort);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(target);
return &job->common;

4
block/blklogwrites.c
View file

@ -253,7 +253,7 @@ fail_log:
if (ret < 0) {
bdrv_graph_wrlock(NULL);
bdrv_unref_child(bs, s->log_file);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(NULL);
s->log_file = NULL;
}
fail:
@ -268,7 +268,7 @@ static void blk_log_writes_close(BlockDriverState *bs)
bdrv_graph_wrlock(NULL);
bdrv_unref_child(bs, s->log_file);
s->log_file = NULL;
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(NULL);
}
static int64_t coroutine_fn GRAPH_RDLOCK

2
block/blkverify.c
View file

@ -154,7 +154,7 @@ static void blkverify_close(BlockDriverState *bs)
bdrv_graph_wrlock(NULL);
bdrv_unref_child(bs, s->test_file);
s->test_file = NULL;
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(NULL);
}
static int64_t coroutine_fn GRAPH_RDLOCK

12
block/block-backend.c
View file

@ -882,11 +882,14 @@ BlockBackend *blk_by_public(BlockBackendPublic *public)
/*
* Disassociates the currently associated BlockDriverState from @blk.
*
* The caller must hold the AioContext lock for the BlockBackend.
*/
void blk_remove_bs(BlockBackend *blk)
{
ThrottleGroupMember *tgm = &blk->public.throttle_group_member;
BdrvChild *root;
AioContext *ctx;
GLOBAL_STATE_CODE();
@ -916,9 +919,10 @@ void blk_remove_bs(BlockBackend *blk)
root = blk->root;
blk->root = NULL;
bdrv_graph_wrlock(NULL);
ctx = bdrv_get_aio_context(root->bs);
bdrv_graph_wrlock(root->bs);
bdrv_root_unref_child(root);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock_ctx(ctx);
}
/*
@ -929,6 +933,8 @@ void blk_remove_bs(BlockBackend *blk)
int blk_insert_bs(BlockBackend *blk, BlockDriverState *bs, Error **errp)
{
ThrottleGroupMember *tgm = &blk->public.throttle_group_member;
AioContext *ctx = bdrv_get_aio_context(bs);
GLOBAL_STATE_CODE();
bdrv_ref(bs);
bdrv_graph_wrlock(bs);
@ -936,7 +942,7 @@ int blk_insert_bs(BlockBackend *blk, BlockDriverState *bs, Error **errp)
BDRV_CHILD_FILTERED | BDRV_CHILD_PRIMARY,
blk->perm, blk->shared_perm,
blk, errp);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock_ctx(ctx);
if (blk->root == NULL) {
return -EPERM;
}

10
block/commit.c
View file

@ -102,7 +102,7 @@ static void commit_abort(Job *job)
bdrv_drained_begin(commit_top_backing_bs);
bdrv_graph_wrlock(commit_top_backing_bs);
bdrv_replace_node(s->commit_top_bs, commit_top_backing_bs, &error_abort);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(commit_top_backing_bs);
bdrv_drained_end(commit_top_backing_bs);
bdrv_unref(s->commit_top_bs);
@ -370,19 +370,19 @@ void commit_start(const char *job_id, BlockDriverState *bs,
ret = block_job_add_bdrv(&s->common, "intermediate node", iter, 0,
iter_shared_perms, errp);
if (ret < 0) {
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(top);
goto fail;
}
}
if (bdrv_freeze_backing_chain(commit_top_bs, base, errp) < 0) {
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(top);
goto fail;
}
s->chain_frozen = true;
ret = block_job_add_bdrv(&s->common, "base", base, 0, BLK_PERM_ALL, errp);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(top);
if (ret < 0) {
goto fail;
@ -436,7 +436,7 @@ fail:
bdrv_drained_begin(top);
bdrv_graph_wrlock(top);
bdrv_replace_node(commit_top_bs, top, &error_abort);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(top);
bdrv_drained_end(top);
}
}

23
block/graph-lock.c
View file

@ -161,11 +161,21 @@ void no_coroutine_fn bdrv_graph_wrlock(BlockDriverState *bs)
}
}
void bdrv_graph_wrunlock(void)
void no_coroutine_fn bdrv_graph_wrunlock_ctx(AioContext *ctx)
{
GLOBAL_STATE_CODE();
assert(qatomic_read(&has_writer));
/*
* Release only non-mainloop AioContext. The mainloop often relies on the
* BQL and doesn't lock the main AioContext before doing things.
*/
if (ctx && ctx != qemu_get_aio_context()) {
aio_context_release(ctx);
} else {
ctx = NULL;
}
WITH_QEMU_LOCK_GUARD(&aio_context_list_lock) {
/*
* No need for memory barriers, this works in pair with
@ -187,6 +197,17 @@ void bdrv_graph_wrunlock(void)
* progress.
*/
aio_bh_poll(qemu_get_aio_context());
if (ctx) {
aio_context_acquire(ctx);
}
}
void no_coroutine_fn bdrv_graph_wrunlock(BlockDriverState *bs)
{
AioContext *ctx = bs ? bdrv_get_aio_context(bs) : NULL;
bdrv_graph_wrunlock_ctx(ctx);
}
void coroutine_fn bdrv_graph_co_rdlock(void)

14
block/mirror.c
View file

@ -773,7 +773,7 @@ static int mirror_exit_common(Job *job)
"would not lead to an abrupt change of visible data",
to_replace->node_name, target_bs->node_name);
}
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(target_bs);
bdrv_drained_end(to_replace);
if (local_err) {
error_report_err(local_err);
@ -798,7 +798,7 @@ static int mirror_exit_common(Job *job)
block_job_remove_all_bdrv(bjob);
bdrv_graph_wrlock(mirror_top_bs);
bdrv_replace_node(mirror_top_bs, mirror_top_bs->backing->bs, &error_abort);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(mirror_top_bs);
bdrv_drained_end(target_bs);
bdrv_unref(target_bs);
@ -1920,7 +1920,7 @@ static BlockJob *mirror_start_job(
BLK_PERM_CONSISTENT_READ,
errp);
if (ret < 0) {
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(bs);
goto fail;
}
@ -1965,17 +1965,17 @@ static BlockJob *mirror_start_job(
ret = block_job_add_bdrv(&s->common, "intermediate node", iter, 0,
iter_shared_perms, errp);
if (ret < 0) {
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(bs);
goto fail;
}
}
if (bdrv_freeze_backing_chain(mirror_top_bs, target, errp) < 0) {
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(bs);
goto fail;
}
}
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(bs);
QTAILQ_INIT(&s->ops_in_flight);
@ -2006,7 +2006,7 @@ fail:
bdrv_child_refresh_perms(mirror_top_bs, mirror_top_bs->backing,
&error_abort);
bdrv_replace_node(mirror_top_bs, bs, &error_abort);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(bs);
bdrv_drained_end(bs);
bdrv_unref(mirror_top_bs);

2
block/qcow2.c
View file

@ -2809,7 +2809,7 @@ qcow2_do_close(BlockDriverState *bs, bool close_data_file)
bdrv_graph_rdunlock_main_loop();
bdrv_graph_wrlock(NULL);
bdrv_unref_child(bs, s->data_file);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(NULL);
s->data_file = NULL;
bdrv_graph_rdlock_main_loop();
}

4
block/quorum.c
View file

@ -1044,7 +1044,7 @@ close_exit:
}
bdrv_unref_child(bs, s->children[i]);
}
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(NULL);
g_free(s->children);
g_free(opened);
exit:
@ -1061,7 +1061,7 @@ static void quorum_close(BlockDriverState *bs)
for (i = 0; i < s->num_children; i++) {
bdrv_unref_child(bs, s->children[i]);
}
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(NULL);
g_free(s->children);
}

10
block/replication.c
View file

@ -568,7 +568,7 @@ static void replication_start(ReplicationState *rs, ReplicationMode mode,
&local_err);
if (local_err) {
error_propagate(errp, local_err);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(bs);
aio_context_release(aio_context);
return;
}
@ -579,7 +579,7 @@ static void replication_start(ReplicationState *rs, ReplicationMode mode,
BDRV_CHILD_DATA, &local_err);
if (local_err) {
error_propagate(errp, local_err);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(bs);
aio_context_release(aio_context);
return;
}
@ -592,7 +592,7 @@ static void replication_start(ReplicationState *rs, ReplicationMode mode,
if (!top_bs || !bdrv_is_root_node(top_bs) ||
!check_top_bs(top_bs, bs)) {
error_setg(errp, "No top_bs or it is invalid");
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(bs);
reopen_backing_file(bs, false, NULL);
aio_context_release(aio_context);
return;
@ -600,7 +600,7 @@ static void replication_start(ReplicationState *rs, ReplicationMode mode,
bdrv_op_block_all(top_bs, s->blocker);
bdrv_op_unblock(top_bs, BLOCK_OP_TYPE_DATAPLANE, s->blocker);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(bs);
s->backup_job = backup_job_create(
NULL, s->secondary_disk->bs, s->hidden_disk->bs,
@ -696,7 +696,7 @@ static void replication_done(void *opaque, int ret)
s->secondary_disk = NULL;
bdrv_unref_child(bs, s->hidden_disk);
s->hidden_disk = NULL;
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(NULL);
s->error = 0;
} else {

2
block/snapshot.c
View file

@ -292,7 +292,7 @@ int bdrv_snapshot_goto(BlockDriverState *bs,
/* .bdrv_open() will re-attach it */
bdrv_graph_wrlock(NULL);
bdrv_unref_child(bs, fallback);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(NULL);
ret = bdrv_snapshot_goto(fallback_bs, snapshot_id, errp);
open_ret = drv->bdrv_open(bs, options, bs->open_flags, &local_err);

10
block/stream.c
View file

@ -99,9 +99,9 @@ static int stream_prepare(Job *job)
}
}
bdrv_graph_wrlock(base);
bdrv_graph_wrlock(s->target_bs);
bdrv_set_backing_hd_drained(unfiltered_bs, base, &local_err);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(s->target_bs);
/*
* This call will do I/O, so the graph can change again from here on.
@ -369,7 +369,7 @@ void stream_start(const char *job_id, BlockDriverState *bs,
bdrv_graph_wrlock(bs);
if (block_job_add_bdrv(&s->common, "active node", bs, 0,
basic_flags | BLK_PERM_WRITE, errp)) {
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(bs);
goto fail;
}
@ -389,11 +389,11 @@ void stream_start(const char *job_id, BlockDriverState *bs,
ret = block_job_add_bdrv(&s->common, "intermediate node", iter, 0,
basic_flags, errp);
if (ret < 0) {
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(bs);
goto fail;
}
}
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(bs);
s->base_overlay = base_overlay;
s->above_base = above_base;

10
block/vmdk.c
View file

@ -283,7 +283,7 @@ static void vmdk_free_extents(BlockDriverState *bs)
bdrv_unref_child(bs, e->file);
}
}
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(NULL);
g_free(s->extents);
}
@ -1237,7 +1237,7 @@ vmdk_parse_extents(const char *desc, BlockDriverState *bs, QDict *options,
bdrv_graph_rdunlock_main_loop();
bdrv_graph_wrlock(NULL);
bdrv_unref_child(bs, extent_file);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(NULL);
bdrv_graph_rdlock_main_loop();
goto out;
}
@ -1256,7 +1256,7 @@ vmdk_parse_extents(const char *desc, BlockDriverState *bs, QDict *options,
bdrv_graph_rdunlock_main_loop();
bdrv_graph_wrlock(NULL);
bdrv_unref_child(bs, extent_file);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(NULL);
bdrv_graph_rdlock_main_loop();
goto out;
}
@ -1267,7 +1267,7 @@ vmdk_parse_extents(const char *desc, BlockDriverState *bs, QDict *options,
bdrv_graph_rdunlock_main_loop();
bdrv_graph_wrlock(NULL);
bdrv_unref_child(bs, extent_file);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(NULL);
bdrv_graph_rdlock_main_loop();
goto out;
}
@ -1277,7 +1277,7 @@ vmdk_parse_extents(const char *desc, BlockDriverState *bs, QDict *options,
bdrv_graph_rdunlock_main_loop();
bdrv_graph_wrlock(NULL);
bdrv_unref_child(bs, extent_file);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(NULL);
bdrv_graph_rdlock_main_loop();
ret = -ENOTSUP;
goto out;

4
blockdev.c
View file

@ -1613,7 +1613,7 @@ static void external_snapshot_abort(void *opaque)
bdrv_drained_begin(state->new_bs);
bdrv_graph_wrlock(state->old_bs);
bdrv_replace_node(state->new_bs, state->old_bs, &error_abort);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(state->old_bs);
bdrv_drained_end(state->new_bs);
bdrv_unref(state->old_bs); /* bdrv_replace_node() ref'ed old_bs */
@ -3692,7 +3692,7 @@ void qmp_x_blockdev_change(const char *parent, const char *child,
}
out:
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(NULL);
}
BlockJobInfoList *qmp_query_block_jobs(Error **errp)

8
blockjob.c
View file

@ -212,7 +212,7 @@ void block_job_remove_all_bdrv(BlockJob *job)
g_slist_free_1(l);
}
bdrv_graph_wrunlock();
bdrv_graph_wrunlock_ctx(job->job.aio_context);
}
bool block_job_has_bdrv(BlockJob *job, BlockDriverState *bs)
@ -523,7 +523,7 @@ void *block_job_create(const char *job_id, const BlockJobDriver *driver,
job = job_create(job_id, &driver->job_driver, txn, bdrv_get_aio_context(bs),
flags, cb, opaque, errp);
if (job == NULL) {
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(bs);
return NULL;
}
@ -563,11 +563,11 @@ void *block_job_create(const char *job_id, const BlockJobDriver *driver,
goto fail;
}
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(bs);
return job;
fail:
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(bs);
job_early_fail(&job->job);
return NULL;
}

27
hw/ide/ahci.c
View file

@ -623,9 +623,13 @@ static void ahci_init_d2h(AHCIDevice *ad)
return;
}
/*
* For simplicity, do not call ahci_clear_cmd_issue() for this
* ahci_write_fis_d2h(). (The reset value for PxCI is 0.)
*/
if (ahci_write_fis_d2h(ad, true)) {
ad->init_d2h_sent = true;
/* We're emulating receiving the first Reg H2D Fis from the device;
/* We're emulating receiving the first Reg D2H FIS from the device;
* Update the SIG register, but otherwise proceed as normal. */
pr->sig = ((uint32_t)ide_state->hcyl << 24) |
(ide_state->lcyl << 16) |
@ -663,6 +667,7 @@ static void ahci_reset_port(AHCIState *s, int port)
pr->scr_act = 0;
pr->tfdata = 0x7F;
pr->sig = 0xFFFFFFFF;
pr->cmd_issue = 0;
d->busy_slot = -1;
d->init_d2h_sent = false;
@ -1242,10 +1247,30 @@ static void handle_reg_h2d_fis(AHCIState *s, int port,
case STATE_RUN:
if (cmd_fis[15] & ATA_SRST) {
s->dev[port].port_state = STATE_RESET;
/*
* When setting SRST in the first H2D FIS in the reset sequence,
* the device does not send a D2H FIS. Host software thus has to
* set the "Clear Busy upon R_OK" bit such that PxCI (and BUSY)
* gets cleared. See AHCI 1.3.1, section 10.4.1 Software Reset.
*/
if (opts & AHCI_CMD_CLR_BUSY) {
ahci_clear_cmd_issue(ad, slot);
}
}
break;
case STATE_RESET:
if (!(cmd_fis[15] & ATA_SRST)) {
/*
* When clearing SRST in the second H2D FIS in the reset
* sequence, the device will execute diagnostics. When this is
* done, the device will send a D2H FIS with the good status.
* See SATA 3.5a Gold, section 11.4 Software reset protocol.
*
* This D2H FIS is the first D2H FIS received from the device,
* and is received regardless if the reset was performed by a
* COMRESET or by setting and clearing the SRST bit. Therefore,
* the logic for this is found in ahci_init_d2h() and not here.
*/
ahci_reset_port(s, port);
}
break;

12
hw/ide/core.c
View file

@ -81,6 +81,18 @@ static const char *IDE_DMA_CMD_str(enum ide_dma_cmd enval)
static void ide_dummy_transfer_stop(IDEState *s);
const MemoryRegionPortio ide_portio_list[] = {
{ 0, 8, 1, .read = ide_ioport_read, .write = ide_ioport_write },
{ 0, 1, 2, .read = ide_data_readw, .write = ide_data_writew },
{ 0, 1, 4, .read = ide_data_readl, .write = ide_data_writel },
PORTIO_END_OF_LIST(),
};
const MemoryRegionPortio ide_portio2_list[] = {
{ 0, 1, 1, .read = ide_status_read, .write = ide_ctrl_write },
PORTIO_END_OF_LIST(),
};
static void padstr(char *str, const char *src, int len)
{
int i, v;

12
hw/ide/ioport.c
View file

@ -28,18 +28,6 @@
#include "hw/ide/internal.h"
#include "trace.h"
static const MemoryRegionPortio ide_portio_list[] = {
{ 0, 8, 1, .read = ide_ioport_read, .write = ide_ioport_write },
{ 0, 1, 2, .read = ide_data_readw, .write = ide_data_writew },
{ 0, 1, 4, .read = ide_data_readl, .write = ide_data_writel },
PORTIO_END_OF_LIST(),
};
static const MemoryRegionPortio ide_portio2_list[] = {
{ 0, 1, 1, .read = ide_status_read, .write = ide_ctrl_write },
PORTIO_END_OF_LIST(),
};
int ide_init_ioport(IDEBus *bus, ISADevice *dev, int iobase, int iobase2)
{
int ret;

84
hw/ide/pci.c
View file

@ -104,6 +104,90 @@ const MemoryRegionOps pci_ide_data_le_ops = {
.endianness = DEVICE_LITTLE_ENDIAN,
};
void pci_ide_update_mode(PCIIDEState *s)
{
PCIDevice *d = PCI_DEVICE(s);
uint8_t mode = d->config[PCI_CLASS_PROG];
/*
* This function only configures the BARs/ioports for now: PCI IDE
* controllers must manage their own IRQ routing
*/
switch (mode & 0xf) {
case 0xa:
/* Both channels legacy mode */
/*
* TODO: according to the PCI IDE specification the BARs should
* be completely disabled, however Linux for the pegasos2
* machine stil accesses the BAR addresses after switching to legacy
* mode. Hence we leave them active for now.
*/
/* Clear interrupt pin */
pci_config_set_interrupt_pin(d->config, 0);
/* Add legacy IDE ports */
if (!s->bus[0].portio_list.owner) {
portio_list_init(&s->bus[0].portio_list, OBJECT(d),
ide_portio_list, &s->bus[0], "ide");
portio_list_add(&s->bus[0].portio_list,
pci_address_space_io(d), 0x1f0);
}
if (!s->bus[0].portio2_list.owner) {
portio_list_init(&s->bus[0].portio2_list, OBJECT(d),
ide_portio2_list, &s->bus[0], "ide");
portio_list_add(&s->bus[0].portio2_list,
pci_address_space_io(d), 0x3f6);
}
if (!s->bus[1].portio_list.owner) {
portio_list_init(&s->bus[1].portio_list, OBJECT(d),
ide_portio_list, &s->bus[1], "ide");
portio_list_add(&s->bus[1].portio_list,
pci_address_space_io(d), 0x170);
}
if (!s->bus[1].portio2_list.owner) {
portio_list_init(&s->bus[1].portio2_list, OBJECT(d),
ide_portio2_list, &s->bus[1], "ide");
portio_list_add(&s->bus[1].portio2_list,
pci_address_space_io(d), 0x376);
}
break;
case 0xf:
/* Both channels native mode */
/* Set interrupt pin */
pci_config_set_interrupt_pin(d->config, 1);
/* Remove legacy IDE ports */
if (s->bus[0].portio_list.owner) {
portio_list_del(&s->bus[0].portio_list);
portio_list_destroy(&s->bus[0].portio_list);
}
if (s->bus[0].portio2_list.owner) {
portio_list_del(&s->bus[0].portio2_list);
portio_list_destroy(&s->bus[0].portio2_list);
}
if (s->bus[1].portio_list.owner) {
portio_list_del(&s->bus[1].portio_list);
portio_list_destroy(&s->bus[1].portio_list);
}
if (s->bus[1].portio2_list.owner) {
portio_list_del(&s->bus[1].portio2_list);
portio_list_destroy(&s->bus[1].portio2_list);
}
break;
}
}
static IDEState *bmdma_active_if(BMDMAState *bmdma)
{
assert(bmdma->bus->retry_unit != (uint8_t)-1);

44
hw/ide/via.c
View file

@ -28,6 +28,7 @@
#include "hw/pci/pci.h"
#include "migration/vmstate.h"
#include "qemu/module.h"
#include "qemu/range.h"
#include "sysemu/dma.h"
#include "hw/isa/vt82c686.h"
#include "hw/ide/pci.h"
@ -128,16 +129,14 @@ static void via_ide_reset(DeviceState *dev)
ide_bus_reset(&d->bus[i]);
}
pci_config_set_prog_interface(pci_conf, 0x8a); /* legacy mode */
pci_ide_update_mode(d);
pci_set_word(pci_conf + PCI_COMMAND, PCI_COMMAND_IO | PCI_COMMAND_WAIT);
pci_set_word(pci_conf + PCI_STATUS, PCI_STATUS_FAST_BACK |
PCI_STATUS_DEVSEL_MEDIUM);
pci_set_long(pci_conf + PCI_BASE_ADDRESS_0, 0x000001f0);
pci_set_long(pci_conf + PCI_BASE_ADDRESS_1, 0x000003f4);
pci_set_long(pci_conf + PCI_BASE_ADDRESS_2, 0x00000170);
pci_set_long(pci_conf + PCI_BASE_ADDRESS_3, 0x00000374);
pci_set_long(pci_conf + PCI_BASE_ADDRESS_4, 0x0000cc01); /* BMIBA: 20-23h */
pci_set_long(pci_conf + PCI_INTERRUPT_LINE, 0x0000010e);
pci_set_byte(pci_conf + PCI_INTERRUPT_LINE, 0xe);
/* IDE chip enable, IDE configuration 1/2, IDE FIFO Configuration*/
pci_set_long(pci_conf + 0x40, 0x0a090600);
@ -159,6 +158,36 @@ static void via_ide_reset(DeviceState *dev)
pci_set_long(pci_conf + 0xc0, 0x00020001);
}
static uint32_t via_ide_cfg_read(PCIDevice *pd, uint32_t addr, int len)
{
uint32_t val = pci_default_read_config(pd, addr, len);
uint8_t mode = pd->config[PCI_CLASS_PROG];
if ((mode & 0xf) == 0xa && ranges_overlap(addr, len,
PCI_BASE_ADDRESS_0, 16)) {
/* BARs always read back zero in legacy mode */
for (int i = addr; i < addr + len; i++) {
if (i >= PCI_BASE_ADDRESS_0 && i < PCI_BASE_ADDRESS_0 + 16) {
val &= ~(0xffULL << ((i - addr) << 3));
}
}
}
return val;
}
static void via_ide_cfg_write(PCIDevice *pd, uint32_t addr,
uint32_t val, int len)
{
PCIIDEState *d = PCI_IDE(pd);
pci_default_write_config(pd, addr, val, len);
if (range_covers_byte(addr, len, PCI_CLASS_PROG)) {
pci_ide_update_mode(d);
}
}
static void via_ide_realize(PCIDevice *dev, Error **errp)
{
PCIIDEState *d = PCI_IDE(dev);
@ -166,7 +195,6 @@ static void via_ide_realize(PCIDevice *dev, Error **errp)
uint8_t *pci_conf = dev->config;
int i;
pci_config_set_prog_interface(pci_conf, 0x8a); /* legacy mode */
pci_set_long(pci_conf + PCI_CAPABILITY_LIST, 0x000000c0);
dev->wmask[PCI_INTERRUPT_LINE] = 0;
dev->wmask[PCI_CLASS_PROG] = 5;
@ -221,6 +249,8 @@ static void via_ide_class_init(ObjectClass *klass, void *data)
/* Reason: only works as function of VIA southbridge */
dc->user_creatable = false;
k->config_read = via_ide_cfg_read;
k->config_write = via_ide_cfg_write;
k->realize = via_ide_realize;
k->exit = via_ide_exitfn;
k->vendor_id = PCI_VENDOR_ID_VIA;

15
include/block/graph-lock.h
View file

@ -123,8 +123,21 @@ bdrv_graph_wrlock(BlockDriverState *bs);
* bdrv_graph_wrunlock:
* Write finished, reset global has_writer to 0 and restart
* all readers that are waiting.
*
* If @bs is non-NULL, its AioContext is temporarily released.
*/
void bdrv_graph_wrunlock(void) TSA_RELEASE(graph_lock) TSA_NO_TSA;
void no_coroutine_fn TSA_RELEASE(graph_lock) TSA_NO_TSA
bdrv_graph_wrunlock(BlockDriverState *bs);
/*
* bdrv_graph_wrunlock_ctx:
* Write finished, reset global has_writer to 0 and restart
* all readers that are waiting.
*
* If @ctx is non-NULL, its lock is temporarily released.
*/
void no_coroutine_fn TSA_RELEASE(graph_lock) TSA_NO_TSA
bdrv_graph_wrunlock_ctx(AioContext *ctx);
/*
* bdrv_graph_co_rdlock:

3
include/hw/ide/internal.h
View file

@ -354,6 +354,9 @@ enum ide_dma_cmd {
extern const char *IDE_DMA_CMD_lookup[IDE_DMA__COUNT];
extern const MemoryRegionPortio ide_portio_list[];
extern const MemoryRegionPortio ide_portio2_list[];
#define ide_cmd_is_read(s) \
((s)->dma_cmd == IDE_DMA_READ)

1
include/hw/ide/pci.h
View file

@ -61,6 +61,7 @@ void bmdma_cmd_writeb(BMDMAState *bm, uint32_t val);
void bmdma_status_writeb(BMDMAState *bm, uint32_t val);
extern MemoryRegionOps bmdma_addr_ioport_ops;
void pci_ide_create_devs(PCIDevice *dev);
void pci_ide_update_mode(PCIIDEState *s);
extern const VMStateDescription vmstate_ide_pci;
extern const MemoryRegionOps pci_ide_cmd_le_ops;

2
scripts/block-coroutine-wrapper.py
View file

@ -262,7 +262,7 @@ def gen_no_co_wrapper(func: FuncDecl) -> str:
graph_unlock=' bdrv_graph_rdunlock_main_loop();'
elif func.graph_wrlock:
graph_lock=' bdrv_graph_wrlock(NULL);'
graph_unlock=' bdrv_graph_wrunlock();'
graph_unlock=' bdrv_graph_wrunlock(NULL);'
return f"""\
/*

74
tests/qemu-iotests/tests/iothreads-stream Executable file
View file

@ -0,0 +1,74 @@
#!/usr/bin/env python3
# group: rw quick auto
#
# Copyright (C) 2023 Red Hat, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
# Creator/Owner: Kevin Wolf <kwolf@redhat.com>
import iotests
iotests.script_initialize(supported_fmts=['qcow2'],
supported_platforms=['linux'])
iotests.verify_virtio_scsi_pci_or_ccw()
with iotests.FilePath('disk1.img') as base1_path, \
iotests.FilePath('disk1-snap.img') as snap1_path, \
iotests.FilePath('disk2.img') as base2_path, \
iotests.FilePath('disk2-snap.img') as snap2_path, \
iotests.VM() as vm:
img_size = '10M'
# Only one iothread for both disks
vm.add_object('iothread,id=iothread0')
vm.add_device('virtio-scsi,iothread=iothread0')
iotests.log('Preparing disks...')
for i, base_path, snap_path in ((0, base1_path, snap1_path),
(1, base2_path, snap2_path)):
iotests.qemu_img_create('-f', iotests.imgfmt, base_path, img_size)
iotests.qemu_img_create('-f', iotests.imgfmt, '-b', base_path,
'-F', iotests.imgfmt, snap_path)
iotests.qemu_io_log('-c', f'write 0 {img_size}', base_path)
vm.add_blockdev(f'file,node-name=disk{i}-base-file,'
f'filename={base_path}')
vm.add_blockdev(f'qcow2,node-name=disk{i}-base,file=disk{i}-base-file')
vm.add_blockdev(f'file,node-name=disk{i}-file,filename={snap_path}')
vm.add_blockdev(f'qcow2,node-name=disk{i},file=disk{i}-file,'
f'backing=disk{i}-base')
vm.add_device(f'scsi-hd,drive=disk{i}')
iotests.log('Launching VM...')
vm.launch()
iotests.log('Starting stream jobs...')
iotests.log(vm.qmp('block-stream', device='disk0', job_id='job0'))
iotests.log(vm.qmp('block-stream', device='disk1', job_id='job1'))
finished = 0
while True:
try:
ev = vm.event_wait('JOB_STATUS_CHANGE', timeout=0.1)
if ev is not None and ev['data']['status'] == 'null':
finished += 1
# The test is done once both jobs are gone
if finished == 2:
break
except TimeoutError:
pass
vm.cmd('query-jobs')

11
tests/qemu-iotests/tests/iothreads-stream.out Normal file
View file

@ -0,0 +1,11 @@
Preparing disks...
wrote 10485760/10485760 bytes at offset 0
10 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
wrote 10485760/10485760 bytes at offset 0
10 MiB, X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)
Launching VM...
Starting stream jobs...
{"return": {}}
{"return": {}}

20
tests/unit/test-bdrv-drain.c
View file

@ -809,7 +809,7 @@ static void test_blockjob_common_drain_node(enum drain_type drain_type,
bdrv_graph_wrlock(target);
block_job_add_bdrv(job, "target", target, 0, BLK_PERM_ALL, &error_abort);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(target);
switch (result) {
case TEST_JOB_SUCCESS:
@ -995,7 +995,7 @@ static void bdrv_test_top_close(BlockDriverState *bs)
QLIST_FOREACH_SAFE(c, &bs->children, next, next_c) {
bdrv_unref_child(bs, c);
}
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(NULL);
}
static int coroutine_fn GRAPH_RDLOCK
@ -1088,7 +1088,7 @@ static void do_test_delete_by_drain(bool detach_instead_of_delete,
bdrv_graph_wrlock(NULL);
bdrv_attach_child(bs, null_bs, "null-child", &child_of_bds,
BDRV_CHILD_DATA, &error_abort);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(NULL);
/* This child will be the one to pass to requests through to, and
* it will stall until a drain occurs */
@ -1101,7 +1101,7 @@ static void do_test_delete_by_drain(bool detach_instead_of_delete,
&child_of_bds,
BDRV_CHILD_DATA | BDRV_CHILD_PRIMARY,
&error_abort);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(NULL);
/* This child is just there to be deleted
* (for detach_instead_of_delete == true) */
@ -1110,7 +1110,7 @@ static void do_test_delete_by_drain(bool detach_instead_of_delete,
bdrv_graph_wrlock(NULL);
bdrv_attach_child(bs, null_bs, "null-child", &child_of_bds, BDRV_CHILD_DATA,
&error_abort);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(NULL);
blk = blk_new(qemu_get_aio_context(), BLK_PERM_ALL, BLK_PERM_ALL);
blk_insert_bs(blk, bs, &error_abort);
@ -1200,7 +1200,7 @@ static void no_coroutine_fn detach_indirect_bh(void *opaque)
data->child_c = bdrv_attach_child(data->parent_b, data->c, "PB-C",
&child_of_bds, BDRV_CHILD_DATA,
&error_abort);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(NULL);
}
static void coroutine_mixed_fn detach_by_parent_aio_cb(void *opaque, int ret)
@ -1308,7 +1308,7 @@ static void TSA_NO_TSA test_detach_indirect(bool by_parent_cb)
bdrv_attach_child(parent_a, a, "PA-A",
by_parent_cb ? &child_of_bds : &detach_by_driver_cb_class,
BDRV_CHILD_DATA, &error_abort);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(NULL);
g_assert_cmpint(parent_a->refcnt, ==, 1);
g_assert_cmpint(parent_b->refcnt, ==, 1);
@ -1735,7 +1735,7 @@ static void test_drop_intermediate_poll(void)
&chain_child_class, BDRV_CHILD_COW, &error_abort);
}
}
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(NULL);
job = block_job_create("job", &test_simple_job_driver, NULL, job_node,
0, BLK_PERM_ALL, 0, 0, NULL, NULL, &error_abort);
@ -1985,7 +1985,7 @@ static void do_test_replace_child_mid_drain(int old_drain_count,
bdrv_graph_wrlock(NULL);
bdrv_attach_child(parent_bs, old_child_bs, "child", &child_of_bds,
BDRV_CHILD_COW, &error_abort);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(NULL);
parent_s->setup_completed = true;
for (i = 0; i < old_drain_count; i++) {
@ -2018,7 +2018,7 @@ static void do_test_replace_child_mid_drain(int old_drain_count,
bdrv_drained_begin(new_child_bs);
bdrv_graph_wrlock(NULL);
bdrv_replace_node(old_child_bs, new_child_bs, &error_abort);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(NULL);
bdrv_drained_end(new_child_bs);
bdrv_drained_end(old_child_bs);
g_assert(parent_bs->quiesce_counter == new_drain_count);

10
tests/unit/test-bdrv-graph-mod.c
View file

@ -140,7 +140,7 @@ static void test_update_perm_tree(void)
bdrv_graph_wrlock(NULL);
bdrv_attach_child(filter, bs, "child", &child_of_bds,
BDRV_CHILD_DATA, &error_abort);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(NULL);
aio_context_acquire(qemu_get_aio_context());
ret = bdrv_append(filter, bs, NULL);
@ -210,7 +210,7 @@ static void test_should_update_child(void)
g_assert(target->backing->bs == bs);
bdrv_attach_child(filter, target, "target", &child_of_bds,
BDRV_CHILD_DATA, &error_abort);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(NULL);
aio_context_acquire(qemu_get_aio_context());
bdrv_append(filter, bs, &error_abort);
aio_context_release(qemu_get_aio_context());
@ -260,7 +260,7 @@ static void test_parallel_exclusive_write(void)
&error_abort);
bdrv_replace_node(fl1, fl2, &error_abort);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(NULL);
bdrv_drained_end(fl2);
bdrv_drained_end(fl1);
@ -380,7 +380,7 @@ static void test_parallel_perm_update(void)
bdrv_attach_child(fl2, base, "backing", &child_of_bds,
BDRV_CHILD_FILTERED | BDRV_CHILD_PRIMARY,
&error_abort);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(NULL);
/* Select fl1 as first child to be active */
s->selected = c_fl1;
@ -438,7 +438,7 @@ static void test_append_greedy_filter(void)
bdrv_attach_child(top, base, "backing", &child_of_bds,
BDRV_CHILD_FILTERED | BDRV_CHILD_PRIMARY,
&error_abort);
bdrv_graph_wrunlock();
bdrv_graph_wrunlock(NULL);
aio_context_acquire(qemu_get_aio_context());
bdrv_append(fl, base, &error_abort);