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authorAlexander Graf <agraf@suse.de>2014-05-26 10:27:58 +0200
committerAlexander Graf <agraf@suse.de>2014-06-16 13:24:38 +0200
commit3e300fa6ad4ee19b16339c25773dec8df0bfb982 (patch)
tree45fb2105bd9e7112fa0fc51428d44da6a37564a7 /hw/misc/macio
parent6ab39b1bd3474aab57e10cc90377b9a3b94a72d4 (diff)
macio ide: Do remainder access asynchronously
The macio IDE controller has some pretty nasty magic in its implementation to allow for unaligned sector accesses. We used to handle these accesses synchronously inside the IO callback handler. However, the block infrastructure changed below our feet and now it's impossible to call a synchronous block read/write from the aio callback handler of a previous block access. Work around that limitation by making the unaligned handling bits also go through our asynchronous handler. This fixes booting Mac OS X for me. Reported-by: John Arbuckle <programmingkidx@gmail.com> Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'hw/misc/macio')
-rw-r--r--hw/misc/macio/mac_dbdma.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/hw/misc/macio/mac_dbdma.c b/hw/misc/macio/mac_dbdma.c
index 3335476c29..b25e8511b2 100644
--- a/hw/misc/macio/mac_dbdma.c
+++ b/hw/misc/macio/mac_dbdma.c
@@ -748,9 +748,15 @@ static void dbdma_reset(void *opaque)
void* DBDMA_init (MemoryRegion **dbdma_mem)
{
DBDMAState *s;
+ int i;
s = g_malloc0(sizeof(DBDMAState));
+ for (i = 0; i < DBDMA_CHANNELS; i++) {
+ DBDMA_io *io = &s->channels[i].io;
+ qemu_iovec_init(&io->iov, 1);
+ }
+
memory_region_init_io(&s->mem, NULL, &dbdma_ops, s, "dbdma", 0x1000);
*dbdma_mem = &s->mem;
vmstate_register(NULL, -1, &vmstate_dbdma, s);