From e881f8ce2a68dcd13ad74c96efd58e6b2246d8a8 Mon Sep 17 00:00:00 2001
From: Ron Dreslinski <rdreslin@umich.edu>
Date: Wed, 29 Mar 2006 14:27:10 -0500
Subject: Add some basic statistics to the disk model

--HG--
extra : convert_revision : 0f3a45745b0122de64a2f434604a474df04f2938
---
 dev/ide_disk.cc | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)

(limited to 'dev/ide_disk.cc')

diff --git a/dev/ide_disk.cc b/dev/ide_disk.cc
index 41400c590..c13556ed6 100644
--- a/dev/ide_disk.cc
+++ b/dev/ide_disk.cc
@@ -377,6 +377,37 @@ IdeDisk::dmaPrdReadDone()
         doDmaWrite();
 }
 
+void
+IdeDisk::regStats()
+{
+    using namespace Stats;
+    dmaReadFullPages
+        .name(name() + ".dma_read_full_pages")
+        .desc("Number of full page size DMA reads (not PRD).")
+        ;
+    dmaReadBytes
+        .name(name() + ".dma_read_bytes")
+        .desc("Number of bytes transfered via DMA reads (not PRD).")
+        ;
+    dmaReadTxs
+        .name(name() + ".dma_read_txs")
+        .desc("Number of DMA read transactions (not PRD).")
+        ;
+
+    dmaWriteFullPages
+        .name(name() + ".dma_write_full_pages")
+        .desc("Number of full page size DMA writes.")
+        ;
+    dmaWriteBytes
+        .name(name() + ".dma_write_bytes")
+        .desc("Number of bytes transfered via DMA writes.")
+        ;
+    dmaWriteTxs
+        .name(name() + ".dma_write_txs")
+        .desc("Number of DMA write transactions.")
+        ;
+}
+
 void
 IdeDisk::doDmaRead()
 {
@@ -399,6 +430,10 @@ IdeDisk::doDmaRead()
 
         dmaInterfaceBytes = bytesInPage;
 
+        if (bytesInPage == TheISA::VMPageSize)
+            dmaReadFullPages++;
+        dmaReadBytes += bytesInPage;
+        dmaReadTxs++;
         dmaInterface->doDMA(Read, dmaAddr, bytesInPage,
                             curTick + totalDiskDelay, &dmaReadEvent);
     } else {
@@ -430,6 +465,11 @@ IdeDisk::dmaReadDone()
         bytesInPage = bytesInDmaPage(curAddr, bytesLeft);
         dmaInterfaceBytes += bytesInPage;
 
+        if (bytesInPage == TheISA::VMPageSize)
+            dmaReadFullPages++;
+        dmaReadBytes += bytesInPage;
+        dmaReadTxs++;
+
         dmaInterface->doDMA(Read, dmaAddr, bytesInPage,
                             curTick, &dmaReadEvent);
 
@@ -504,6 +544,11 @@ IdeDisk::doDmaWrite()
 
         dmaInterfaceBytes = bytesInPage;
 
+        if (bytesInPage == TheISA::VMPageSize)
+            dmaWriteFullPages++;
+        dmaWriteBytes += bytesInPage;
+        dmaWriteTxs++;
+
         dmaInterface->doDMA(WriteInvalidate, dmaAddr,
                             bytesInPage, curTick + totalDiskDelay,
                             &dmaWriteEvent);
@@ -535,6 +580,11 @@ IdeDisk::dmaWriteDone()
         bytesInPage = bytesInDmaPage(curAddr, bytesLeft);
         dmaInterfaceBytes += bytesInPage;
 
+        if (bytesInPage == TheISA::VMPageSize)
+            dmaWriteFullPages++;
+        dmaWriteBytes += bytesInPage;
+        dmaWriteTxs++;
+
         dmaInterface->doDMA(WriteInvalidate, dmaAddr,
                             bytesInPage, curTick,
                             &dmaWriteEvent);
-- 
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