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authorAlexander Graf <agraf@suse.de>2013-06-30 02:47:20 +0200
committerAlexander Graf <agraf@suse.de>2013-07-11 18:51:25 +0200
commit03ee3b1e58266c7e5b155d58f443d94b23d2bd05 (patch)
tree6814ae30466a417707b0b0b1bff2d5f243a0901c /hw/misc/macio
parent4aa3510f6f36c5ea35219acf641788222d977437 (diff)
PPC: dbdma: Move processing to io
Soon we will introduce intermediate processing pauses which will allow the bottom half to restart a DMA request that couldn't be fulfilled yet. For that to work, move the processing variable into the io struct which is what DMA providers work with. While touching it, also change it into a bool Signed-off-by: Alexander Graf <agraf@suse.de>
Diffstat (limited to 'hw/misc/macio')
-rw-r--r--hw/misc/macio/mac_dbdma.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/hw/misc/macio/mac_dbdma.c b/hw/misc/macio/mac_dbdma.c
index 4ca0491fab..f47a736182 100644
--- a/hw/misc/macio/mac_dbdma.c
+++ b/hw/misc/macio/mac_dbdma.c
@@ -275,7 +275,9 @@ static void dbdma_end(DBDMA_io *io)
conditional_branch(ch);
wait:
- ch->processing = 0;
+ /* Indicate that we're ready for a new DMA round */
+ ch->io.processing = false;
+
if ((ch->regs[DBDMA_STATUS] & RUN) &&
(ch->regs[DBDMA_STATUS] & ACTIVE))
channel_run(ch);
@@ -301,7 +303,7 @@ static void start_output(DBDMA_channel *ch, int key, uint32_t addr,
ch->io.is_last = is_last;
ch->io.dma_end = dbdma_end;
ch->io.is_dma_out = 1;
- ch->processing = 1;
+ ch->io.processing = true;
if (ch->rw) {
ch->rw(&ch->io);
}
@@ -327,7 +329,7 @@ static void start_input(DBDMA_channel *ch, int key, uint32_t addr,
ch->io.is_last = is_last;
ch->io.dma_end = dbdma_end;
ch->io.is_dma_out = 0;
- ch->processing = 1;
+ ch->io.processing = true;
if (ch->rw) {
ch->rw(&ch->io);
}
@@ -525,7 +527,7 @@ static void DBDMA_run(DBDMAState *s)
for (channel = 0; channel < DBDMA_CHANNELS; channel++) {
DBDMA_channel *ch = &s->channels[channel];
uint32_t status = ch->regs[DBDMA_STATUS];
- if (!ch->processing && (status & RUN) && (status & ACTIVE)) {
+ if (!ch->io.processing && (status & RUN) && (status & ACTIVE)) {
channel_run(ch);
}
}