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authorLinus Torvalds <torvalds@linux-foundation.org>2008-12-18 20:05:53 (GMT)
committerLinus Torvalds <torvalds@linux-foundation.org>2008-12-18 20:05:53 (GMT)
commit59da1f87b276c593b852766c2fdcad62835970f7 (patch)
tree3c3ace81c2132aaf13223df10c4491c38a46c976
parent69098bac169d630a777b362470f20451b9446e39 (diff)
parenta06d568f7c5e40e34ea64881842deb8f4382babf (diff)
Merge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx
* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx: async_xor: dma_map destination DMA_BIDIRECTIONAL dmaengine: protect 'id' from concurrent registrations ioat: wait for self-test completion
-rw-r--r--crypto/async_tx/async_xor.c11
-rw-r--r--drivers/dma/dmaengine.c3
-rw-r--r--drivers/dma/ioat_dma.c5
-rw-r--r--drivers/dma/iop-adma.c16
-rw-r--r--drivers/dma/mv_xor.c15
5 files changed, 41 insertions, 9 deletions
diff --git a/crypto/async_tx/async_xor.c b/crypto/async_tx/async_xor.c
index c029d3e..595b786 100644
--- a/crypto/async_tx/async_xor.c
+++ b/crypto/async_tx/async_xor.c
@@ -53,10 +53,17 @@ do_async_xor(struct dma_chan *chan, struct page *dest, struct page **src_list,
int xor_src_cnt;
dma_addr_t dma_dest;
- dma_dest = dma_map_page(dma->dev, dest, offset, len, DMA_FROM_DEVICE);
- for (i = 0; i < src_cnt; i++)
+ /* map the dest bidrectional in case it is re-used as a source */
+ dma_dest = dma_map_page(dma->dev, dest, offset, len, DMA_BIDIRECTIONAL);
+ for (i = 0; i < src_cnt; i++) {
+ /* only map the dest once */
+ if (unlikely(src_list[i] == dest)) {
+ dma_src[i] = dma_dest;
+ continue;
+ }
dma_src[i] = dma_map_page(dma->dev, src_list[i], offset,
len, DMA_TO_DEVICE);
+ }
while (src_cnt) {
async_flags = flags;
diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c
index 5317e08..6579965 100644
--- a/drivers/dma/dmaengine.c
+++ b/drivers/dma/dmaengine.c
@@ -388,7 +388,10 @@ int dma_async_device_register(struct dma_device *device)
init_completion(&device->done);
kref_init(&device->refcount);
+
+ mutex_lock(&dma_list_mutex);
device->dev_id = id++;
+ mutex_unlock(&dma_list_mutex);
/* represent channels in sysfs. Probably want devs too */
list_for_each_entry(chan, &device->channels, device_node) {
diff --git a/drivers/dma/ioat_dma.c b/drivers/dma/ioat_dma.c
index ecd743f..6607fdd 100644
--- a/drivers/dma/ioat_dma.c
+++ b/drivers/dma/ioat_dma.c
@@ -1341,10 +1341,12 @@ static void ioat_dma_start_null_desc(struct ioat_dma_chan *ioat_chan)
*/
#define IOAT_TEST_SIZE 2000
+DECLARE_COMPLETION(test_completion);
static void ioat_dma_test_callback(void *dma_async_param)
{
printk(KERN_ERR "ioatdma: ioat_dma_test_callback(%p)\n",
dma_async_param);
+ complete(&test_completion);
}
/**
@@ -1410,7 +1412,8 @@ static int ioat_dma_self_test(struct ioatdma_device *device)
goto free_resources;
}
device->common.device_issue_pending(dma_chan);
- msleep(1);
+
+ wait_for_completion_timeout(&test_completion, msecs_to_jiffies(3000));
if (device->common.device_is_tx_complete(dma_chan, cookie, NULL, NULL)
!= DMA_SUCCESS) {
diff --git a/drivers/dma/iop-adma.c b/drivers/dma/iop-adma.c
index c7a9306..6be3172 100644
--- a/drivers/dma/iop-adma.c
+++ b/drivers/dma/iop-adma.c
@@ -85,18 +85,28 @@ iop_adma_run_tx_complete_actions(struct iop_adma_desc_slot *desc,
enum dma_ctrl_flags flags = desc->async_tx.flags;
u32 src_cnt;
dma_addr_t addr;
+ dma_addr_t dest;
+ src_cnt = unmap->unmap_src_cnt;
+ dest = iop_desc_get_dest_addr(unmap, iop_chan);
if (!(flags & DMA_COMPL_SKIP_DEST_UNMAP)) {
- addr = iop_desc_get_dest_addr(unmap, iop_chan);
- dma_unmap_page(dev, addr, len, DMA_FROM_DEVICE);
+ enum dma_data_direction dir;
+
+ if (src_cnt > 1) /* is xor? */
+ dir = DMA_BIDIRECTIONAL;
+ else
+ dir = DMA_FROM_DEVICE;
+
+ dma_unmap_page(dev, dest, len, dir);
}
if (!(flags & DMA_COMPL_SKIP_SRC_UNMAP)) {
- src_cnt = unmap->unmap_src_cnt;
while (src_cnt--) {
addr = iop_desc_get_src_addr(unmap,
iop_chan,
src_cnt);
+ if (addr == dest)
+ continue;
dma_unmap_page(dev, addr, len,
DMA_TO_DEVICE);
}
diff --git a/drivers/dma/mv_xor.c b/drivers/dma/mv_xor.c
index 0328da0..bcda174 100644
--- a/drivers/dma/mv_xor.c
+++ b/drivers/dma/mv_xor.c
@@ -311,17 +311,26 @@ mv_xor_run_tx_complete_actions(struct mv_xor_desc_slot *desc,
enum dma_ctrl_flags flags = desc->async_tx.flags;
u32 src_cnt;
dma_addr_t addr;
+ dma_addr_t dest;
+ src_cnt = unmap->unmap_src_cnt;
+ dest = mv_desc_get_dest_addr(unmap);
if (!(flags & DMA_COMPL_SKIP_DEST_UNMAP)) {
- addr = mv_desc_get_dest_addr(unmap);
- dma_unmap_page(dev, addr, len, DMA_FROM_DEVICE);
+ enum dma_data_direction dir;
+
+ if (src_cnt > 1) /* is xor ? */
+ dir = DMA_BIDIRECTIONAL;
+ else
+ dir = DMA_FROM_DEVICE;
+ dma_unmap_page(dev, dest, len, dir);
}
if (!(flags & DMA_COMPL_SKIP_SRC_UNMAP)) {
- src_cnt = unmap->unmap_src_cnt;
while (src_cnt--) {
addr = mv_desc_get_src_addr(unmap,
src_cnt);
+ if (addr == dest)
+ continue;
dma_unmap_page(dev, addr, len,
DMA_TO_DEVICE);
}

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