From: Alexander Graf <agraf@suse.de>
Date: Sun, 30 Jun 2013 00:18:54 +0000 (+0200)
Subject: PPC: dbdma: Introduce kick function
X-Git-Tag: Tizen_Studio_1.3_Release_p2.3.1~524^2~3^2~432^2~7
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=d1e562deb2de5c2ced639b18dee59a9ab08236b6;p=sdk%2Femulator%2Fqemu.git

PPC: dbdma: Introduce kick function

The DBDMA engine really is running all the time, waiting for input. However
we don't want to waste cycles constantly polling.

So introduce a kick function that data providers can call to notify the
DBDMA controller of new input.

Signed-off-by: Alexander Graf <agraf@suse.de>
---

diff --git a/hw/misc/macio/mac_dbdma.c b/hw/misc/macio/mac_dbdma.c
index c55c75c83c..d1506ce228 100644
--- a/hw/misc/macio/mac_dbdma.c
+++ b/hw/misc/macio/mac_dbdma.c
@@ -536,6 +536,11 @@ static void DBDMA_run_bh(void *opaque)
     DBDMA_run(s);
 }
 
+void DBDMA_kick(DBDMAState *dbdma)
+{
+    qemu_bh_schedule(dbdma_bh);
+}
+
 void DBDMA_register_channel(void *dbdma, int nchan, qemu_irq irq,
                             DBDMA_rw rw, DBDMA_flush flush,
                             void *opaque)
diff --git a/include/hw/ppc/mac_dbdma.h b/include/hw/ppc/mac_dbdma.h
index 90be5d9c9b..aaeab10b6c 100644
--- a/include/hw/ppc/mac_dbdma.h
+++ b/include/hw/ppc/mac_dbdma.h
@@ -161,6 +161,7 @@ typedef struct {
 void DBDMA_register_channel(void *dbdma, int nchan, qemu_irq irq,
                             DBDMA_rw rw, DBDMA_flush flush,
                             void *opaque);
+void DBDMA_kick(DBDMAState *dbdma);
 void* DBDMA_init (MemoryRegion **dbdma_mem);
 
 #endif