Merge remote-tracking branch 'remotes/dgibson/tags/ppc-for-2.6-20160229' into staging

ppc patch queue for 2016-02-29

Some more accumulated patches for target-ppc, pseries machine type and
related devices to fit in before the qemu-2.6 soft freeze.
    * Mostly bugfixes and small cleanups for spapr and Mac platforms

# gpg: Signature made Mon 29 Feb 2016 06:56:34 GMT using RSA key ID 20D9B392
# gpg: Good signature from "David Gibson <david@gibson.dropbear.id.au>"
# gpg:                 aka "David Gibson (Red Hat) <dgibson@redhat.com>"
# gpg:                 aka "David Gibson (ozlabs.org) <dgibson@ozlabs.org>"
# gpg: WARNING: This key is not certified with sufficiently trusted signatures!
# gpg:          It is not certain that the signature belongs to the owner.
# Primary key fingerprint: 75F4 6586 AE61 A66C C44E  87DC 6C38 CACA 20D9 B392

* remotes/dgibson/tags/ppc-for-2.6-20160229:
  xics: report errors with the QEMU Error API
  migration: allow machine to enforce configuration section migration
  spapr: skip configuration section during migration of older machines
  dbdma: warn when using unassigned channel
  spapr: disable vmdesc submission for old machines
  spapr_pci: fix irq leak in RTAS ibm,change-msi
  spapr_pci: kill useless variable in rtas_ibm_change_msi()
  spapr_rng: disable hotpluggability

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 23 insertions, 2 deletions

diff --git a/hw/misc/macio/mac_dbdma.c b/hw/misc/macio/mac_dbdma.c
index d81dea7b0d..6051f17dbd 100644
--- a/hw/misc/macio/mac_dbdma.c
+++ b/hw/misc/macio/mac_dbdma.c
@@ -557,11 +557,13 @@ void DBDMA_register_channel(void *dbdma, int nchan, qemu_irq irq,
 
     DBDMA_DPRINTF("DBDMA_register_channel 0x%x\n", nchan);
 
+    assert(rw);
+    assert(flush);
+
     ch->irq = irq;
     ch->rw = rw;
     ch->flush = flush;
     ch->io.opaque = opaque;
-    ch->io.channel = ch;
 }
 
 static void
@@ -775,6 +777,20 @@ static void dbdma_reset(void *opaque)
         memset(s->channels[i].regs, 0, DBDMA_SIZE);
 }
 
+static void dbdma_unassigned_rw(DBDMA_io *io)
+{
+    DBDMA_channel *ch = io->channel;
+    qemu_log_mask(LOG_GUEST_ERROR, "%s: use of unassigned channel %d\n",
+                  __func__, ch->channel);
+}
+
+static void dbdma_unassigned_flush(DBDMA_io *io)
+{
+    DBDMA_channel *ch = io->channel;
+    qemu_log_mask(LOG_GUEST_ERROR, "%s: use of unassigned channel %d\n",
+                  __func__, ch->channel);
+}
+
 void* DBDMA_init (MemoryRegion **dbdma_mem)
 {
     DBDMAState *s;
@@ -784,8 +800,13 @@ void* DBDMA_init (MemoryRegion **dbdma_mem)
 
     for (i = 0; i < DBDMA_CHANNELS; i++) {
         DBDMA_io *io = &s->channels[i].io;
+        DBDMA_channel *ch = &s->channels[i];
         qemu_iovec_init(&io->iov, 1);
-        s->channels[i].channel = i;
+
+        ch->rw = dbdma_unassigned_rw;
+        ch->flush = dbdma_unassigned_flush;
+        ch->channel = i;
+        ch->io.channel = ch;
     }
 
     memory_region_init_io(&s->mem, NULL, &dbdma_ops, s, "dbdma", 0x1000);