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[Qemu-devel] [[Bug 108996]] hw/dma.c: Fix conversion ioport_register* to
From: |
Julien Grall |
Subject: |
[Qemu-devel] [[Bug 108996]] hw/dma.c: Fix conversion ioport_register* to MemoryRegion |
Date: |
Fri, 14 Dec 2012 09:52:49 +0000 |
The commit 582299336879504353e60c7937fbc70fea93f3da introduced a bug in
dma emulation due to a bad conversion between ioport_register* and MemoryRegion.
Cc: address@hidden
Reported-by: Andreas Gustafsson <address@hidden>
Signed-off-by: Julien Grall <address@hidden>
---
hw/dma.c | 22 +++++++++++-----------
1 file changed, 11 insertions(+), 11 deletions(-)
diff --git a/hw/dma.c b/hw/dma.c
index c2d7b21..1b1d406 100644
--- a/hw/dma.c
+++ b/hw/dma.c
@@ -200,7 +200,7 @@ static void write_cont(void *opaque, hwaddr nport, uint64_t
data,
iport = (nport >> d->dshift) & 0x0f;
switch (iport) {
- case 0x01: /* command */
+ case 0x00: /* command */
if ((data != 0) && (data & CMD_NOT_SUPPORTED)) {
dolog("command %"PRIx64" not supported\n", data);
return;
@@ -208,7 +208,7 @@ static void write_cont(void *opaque, hwaddr nport, uint64_t
data,
d->command = data;
break;
- case 0x02:
+ case 0x01:
ichan = data & 3;
if (data & 4) {
d->status |= 1 << (ichan + 4);
@@ -220,7 +220,7 @@ static void write_cont(void *opaque, hwaddr nport, uint64_t
data,
DMA_run();
break;
- case 0x03: /* single mask */
+ case 0x02: /* single mask */
if (data & 4)
d->mask |= 1 << (data & 3);
else
@@ -228,7 +228,7 @@ static void write_cont(void *opaque, hwaddr nport, uint64_t
data,
DMA_run();
break;
- case 0x04: /* mode */
+ case 0x03: /* mode */
{
ichan = data & 3;
#ifdef DEBUG_DMA
@@ -247,23 +247,23 @@ static void write_cont(void *opaque, hwaddr nport,
uint64_t data,
break;
}
- case 0x05: /* clear flip flop */
+ case 0x04: /* clear flip flop */
d->flip_flop = 0;
break;
- case 0x06: /* reset */
+ case 0x05: /* reset */
d->flip_flop = 0;
d->mask = ~0;
d->status = 0;
d->command = 0;
break;
- case 0x07: /* clear mask for all channels */
+ case 0x06: /* clear mask for all channels */
d->mask = 0;
DMA_run();
break;
- case 0x08: /* write mask for all channels */
+ case 0x07: /* write mask for all channels */
d->mask = data;
DMA_run();
break;
@@ -288,11 +288,11 @@ static uint64_t read_cont(void *opaque, hwaddr nport,
unsigned size)
iport = (nport >> d->dshift) & 0x0f;
switch (iport) {
- case 0x08: /* status */
+ case 0x00: /* status */
val = d->status;
d->status &= 0xf0;
break;
- case 0x0f: /* mask */
+ case 0x01: /* mask */
val = d->mask;
break;
default:
@@ -467,7 +467,7 @@ void DMA_schedule(int nchan)
static void dma_reset(void *opaque)
{
struct dma_cont *d = opaque;
- write_cont(d, (0x06 << d->dshift), 0, 1);
+ write_cont(d, (0x05 << d->dshift), 0, 1);
}
static int dma_phony_handler (void *opaque, int nchan, int dma_pos, int
dma_len)
--
Julien Grall
- [Qemu-devel] [[Bug 108996]] hw/dma.c: Fix conversion ioport_register* to MemoryRegion,
Julien Grall <=