From 549c43b2d0cd2411f7c8eda3f89ce1fd695c17e9 Mon Sep 17 00:00:00 2001 From: Ali Saidi Date: Wed, 13 Aug 2008 17:41:56 -0400 Subject: Add the ability for a DMA to tack on an extra delay after the DMA is actually finished. --- src/dev/io_device.hh | 18 +++++++++++------- 1 file changed, 11 insertions(+), 7 deletions(-) (limited to 'src/dev/io_device.hh') diff --git a/src/dev/io_device.hh b/src/dev/io_device.hh index 44aa01798..1e2e623f1 100644 --- a/src/dev/io_device.hh +++ b/src/dev/io_device.hh @@ -89,8 +89,12 @@ class DmaPort : public Port /** Number of bytes that have been acked for this transaction. */ Addr numBytes; - DmaReqState(Event *ce, Port *p, Addr tb) - : completionEvent(ce), outPort(p), totBytes(tb), numBytes(0) + /** Amount to delay completion of dma by */ + Tick delay; + + DmaReqState(Event *ce, Port *p, Addr tb, Tick _delay) + : completionEvent(ce), outPort(p), totBytes(tb), numBytes(0), + delay(_delay) {} }; @@ -144,7 +148,7 @@ class DmaPort : public Port DmaPort(DmaDevice *dev, System *s); void dmaAction(Packet::Command cmd, Addr addr, int size, Event *event, - uint8_t *data = NULL); + uint8_t *data, Tick delay); bool dmaPending() { return pendingCount > 0; } @@ -265,14 +269,14 @@ class DmaDevice : public PioDevice return dynamic_cast(_params); } - void dmaWrite(Addr addr, int size, Event *event, uint8_t *data) + void dmaWrite(Addr addr, int size, Event *event, uint8_t *data, Tick delay = 0) { - dmaPort->dmaAction(MemCmd::WriteReq, addr, size, event, data); + dmaPort->dmaAction(MemCmd::WriteReq, addr, size, event, data, delay); } - void dmaRead(Addr addr, int size, Event *event, uint8_t *data) + void dmaRead(Addr addr, int size, Event *event, uint8_t *data, Tick delay = 0) { - dmaPort->dmaAction(MemCmd::ReadReq, addr, size, event, data); + dmaPort->dmaAction(MemCmd::ReadReq, addr, size, event, data, delay); } bool dmaPending() { return dmaPort->dmaPending(); } -- cgit v1.2.3