DMAENGINE: generic channel status v2

[net-next-2.6.git] / drivers / dma / iop-adma.c

diff --git a/drivers/dma/iop-adma.c b/drivers/dma/iop-adma.c
index ca6e6a0cb7931e32a85b0f9d8da9bb2f5855b63a..ee40dbba1879ca983274fd656b6df59464d489cf 100644 (file)
--- a/drivers/dma/iop-adma.c
+++ b/drivers/dma/iop-adma.c
@@ -893,14 +893,14 @@ static void iop_adma_free_chan_resources(struct dma_chan *chan)
 }
 
 /**
- * iop_adma_is_complete - poll the status of an ADMA transaction
+ * iop_adma_status - poll the status of an ADMA transaction
  * @chan: ADMA channel handle
  * @cookie: ADMA transaction identifier
+ * @txstate: a holder for the current state of the channel or NULL
  */
-static enum dma_status iop_adma_is_complete(struct dma_chan *chan,
+static enum dma_status iop_adma_status(struct dma_chan *chan,
                                        dma_cookie_t cookie,
-                                       dma_cookie_t *done,
-                                       dma_cookie_t *used)
+                                       struct dma_tx_state *txstate)
 {
        struct iop_adma_chan *iop_chan = to_iop_adma_chan(chan);
        dma_cookie_t last_used;
@@ -910,10 +910,11 @@ static enum dma_status iop_adma_is_complete(struct dma_chan *chan,
        last_used = chan->cookie;
        last_complete = iop_chan->completed_cookie;
 
-       if (done)
-               *done = last_complete;
-       if (used)
-               *used = last_used;
+       if (txstate) {
+               txstate->last = last_complete;
+               txstate->used = last_used;
+               txstate->residue = 0;
+       }
 
        ret = dma_async_is_complete(cookie, last_complete, last_used);
        if (ret == DMA_SUCCESS)
@@ -924,10 +925,11 @@ static enum dma_status iop_adma_is_complete(struct dma_chan *chan,
        last_used = chan->cookie;
        last_complete = iop_chan->completed_cookie;
 
-       if (done)
-               *done = last_complete;
-       if (used)
-               *used = last_used;
+       if (txstate) {
+               txstate->last = last_complete;
+               txstate->used = last_used;
+               txstate->residue = 0;
+       }
 
        return dma_async_is_complete(cookie, last_complete, last_used);
 }
@@ -1042,7 +1044,7 @@ static int __devinit iop_adma_memcpy_self_test(struct iop_adma_device *device)
        iop_adma_issue_pending(dma_chan);
        msleep(1);
 
-       if (iop_adma_is_complete(dma_chan, cookie, NULL, NULL) !=
+       if (iop_adma_status(dma_chan, cookie, NULL) !=
                        DMA_SUCCESS) {
                dev_printk(KERN_ERR, dma_chan->device->dev,
                        "Self-test copy timed out, disabling\n");
@@ -1142,7 +1144,7 @@ iop_adma_xor_val_self_test(struct iop_adma_device *device)
        iop_adma_issue_pending(dma_chan);
        msleep(8);
 
-       if (iop_adma_is_complete(dma_chan, cookie, NULL, NULL) !=
+       if (iop_adma_status(dma_chan, cookie, NULL) !=
                DMA_SUCCESS) {
                dev_printk(KERN_ERR, dma_chan->device->dev,
                        "Self-test xor timed out, disabling\n");
@@ -1189,7 +1191,7 @@ iop_adma_xor_val_self_test(struct iop_adma_device *device)
        iop_adma_issue_pending(dma_chan);
        msleep(8);
 
-       if (iop_adma_is_complete(dma_chan, cookie, NULL, NULL) != DMA_SUCCESS) {
+       if (iop_adma_status(dma_chan, cookie, NULL) != DMA_SUCCESS) {
                dev_printk(KERN_ERR, dma_chan->device->dev,
                        "Self-test zero sum timed out, disabling\n");
                err = -ENODEV;
@@ -1213,7 +1215,7 @@ iop_adma_xor_val_self_test(struct iop_adma_device *device)
        iop_adma_issue_pending(dma_chan);
        msleep(8);
 
-       if (iop_adma_is_complete(dma_chan, cookie, NULL, NULL) != DMA_SUCCESS) {
+       if (iop_adma_status(dma_chan, cookie, NULL) != DMA_SUCCESS) {
                dev_printk(KERN_ERR, dma_chan->device->dev,
                        "Self-test memset timed out, disabling\n");
                err = -ENODEV;
@@ -1245,7 +1247,7 @@ iop_adma_xor_val_self_test(struct iop_adma_device *device)
        iop_adma_issue_pending(dma_chan);
        msleep(8);
 
-       if (iop_adma_is_complete(dma_chan, cookie, NULL, NULL) != DMA_SUCCESS) {
+       if (iop_adma_status(dma_chan, cookie, NULL) != DMA_SUCCESS) {
                dev_printk(KERN_ERR, dma_chan->device->dev,
                        "Self-test non-zero sum timed out, disabling\n");
                err = -ENODEV;
@@ -1340,7 +1342,7 @@ iop_adma_pq_zero_sum_self_test(struct iop_adma_device *device)
        iop_adma_issue_pending(dma_chan);
        msleep(8);
 
-       if (iop_adma_is_complete(dma_chan, cookie, NULL, NULL) !=
+       if (iop_adma_status(dma_chan, cookie, NULL) !=
                DMA_SUCCESS) {
                dev_err(dev, "Self-test pq timed out, disabling\n");
                err = -ENODEV;
@@ -1377,7 +1379,7 @@ iop_adma_pq_zero_sum_self_test(struct iop_adma_device *device)
        iop_adma_issue_pending(dma_chan);
        msleep(8);
 
-       if (iop_adma_is_complete(dma_chan, cookie, NULL, NULL) !=
+       if (iop_adma_status(dma_chan, cookie, NULL) !=
                DMA_SUCCESS) {
                dev_err(dev, "Self-test pq-zero-sum timed out, disabling\n");
                err = -ENODEV;
@@ -1409,7 +1411,7 @@ iop_adma_pq_zero_sum_self_test(struct iop_adma_device *device)
        iop_adma_issue_pending(dma_chan);
        msleep(8);
 
-       if (iop_adma_is_complete(dma_chan, cookie, NULL, NULL) !=
+       if (iop_adma_status(dma_chan, cookie, NULL) !=
                DMA_SUCCESS) {
                dev_err(dev, "Self-test !pq-zero-sum timed out, disabling\n");
                err = -ENODEV;
@@ -1507,7 +1509,7 @@ static int __devinit iop_adma_probe(struct platform_device *pdev)
        /* set base routines */
        dma_dev->device_alloc_chan_resources = iop_adma_alloc_chan_resources;
        dma_dev->device_free_chan_resources = iop_adma_free_chan_resources;
-       dma_dev->device_is_tx_complete = iop_adma_is_complete;
+       dma_dev->device_tx_status = iop_adma_status;
        dma_dev->device_issue_pending = iop_adma_issue_pending;
        dma_dev->dev = &pdev->dev;