diff options
| -rw-r--r-- | drivers/dma/ioat_dma.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/drivers/dma/ioat_dma.c b/drivers/dma/ioat_dma.c index 15906027c8d..7e4a785c2df 100644 --- a/drivers/dma/ioat_dma.c +++ b/drivers/dma/ioat_dma.c @@ -212,6 +212,18 @@ static dma_cookie_t ioat_tx_submit(struct dma_async_tx_descriptor *tx) } while (len && (new = ioat_dma_get_next_descriptor(ioat_chan))); hw->ctl = IOAT_DMA_DESCRIPTOR_CTL_CP_STS; + if (new->async_tx.callback) { + hw->ctl |= IOAT_DMA_DESCRIPTOR_CTL_INT_GN; + if (first != new) { + /* move callback into to last desc */ + new->async_tx.callback = first->async_tx.callback; + new->async_tx.callback_param + = first->async_tx.callback_param; + first->async_tx.callback = NULL; + first->async_tx.callback_param = NULL; + } + } + new->tx_cnt = desc_count; new->async_tx.ack = orig_ack; /* client is in control of this ack */ @@ -517,6 +529,11 @@ static void ioat_dma_memcpy_cleanup(struct ioat_dma_chan *ioat_chan) pci_unmap_addr(desc, src), pci_unmap_len(desc, len), PCI_DMA_TODEVICE); + if (desc->async_tx.callback) { + desc->async_tx.callback( + desc->async_tx.callback_param); + desc->async_tx.callback = NULL; + } } if (desc->async_tx.phys != phys_complete) { @@ -638,6 +655,12 @@ static void ioat_dma_start_null_desc(struct ioat_dma_chan *ioat_chan) */ #define IOAT_TEST_SIZE 2000 +static void ioat_dma_test_callback(void *dma_async_param) +{ + printk(KERN_ERR "ioatdma: ioat_dma_test_callback(%p)\n", + dma_async_param); +} + /** * ioat_dma_self_test - Perform a IOAT transaction to verify the HW works. * @device: device to be tested @@ -692,6 +715,8 @@ static int ioat_dma_self_test(struct ioatdma_device *device) addr = dma_map_single(dma_chan->device->dev, dest, IOAT_TEST_SIZE, DMA_FROM_DEVICE); ioat_set_dest(addr, tx, 0); + tx->callback = ioat_dma_test_callback; + tx->callback_param = (void *)0x8086; cookie = ioat_tx_submit(tx); if (cookie < 0) { dev_err(&device->pdev->dev, |