changeset 8e240cd8132a in /z/repo/gem5
details: http://repo.gem5.org/gem5?cmd=changeset;node=8e240cd8132a
description:
dev: Fix draining for UFSHostDevice and FlashDevice
This patch fixes the drain logic for the UFSHostDevice and the
FlashDevice. In the case of the FlashDevice, the logic for CheckDrain
needed to be reversed, whilst in the case of the UFSHostDevice check
drain was never being called. In both cases the system would never
complete draining if the initial attampt to drain failed.
diffstat:
src/dev/arm/flash_device.cc | 2 +-
src/dev/arm/ufs_device.cc | 4 ++++
2 files changed, 5 insertions(+), 1 deletions(-)
diffs (33 lines):
diff -r 555325cbf464 -r 8e240cd8132a src/dev/arm/flash_device.cc
--- a/src/dev/arm/flash_device.cc Thu Oct 29 08:48:23 2015 -0400
+++ b/src/dev/arm/flash_device.cc Thu Oct 29 08:48:24 2015 -0400
@@ -605,7 +605,7 @@
void
FlashDevice::checkDrain()
{
- if (drainState() == DrainState::Draining)
+ if (drainState() != DrainState::Draining)
return;
if (planeEvent.when() > curTick()) {
diff -r 555325cbf464 -r 8e240cd8132a src/dev/arm/ufs_device.cc
--- a/src/dev/arm/ufs_device.cc Thu Oct 29 08:48:23 2015 -0400
+++ b/src/dev/arm/ufs_device.cc Thu Oct 29 08:48:24 2015 -0400
@@ -1822,6 +1822,8 @@
pendingDoorbells = 0;
DPRINTF(UFSHostDevice, "Clear doorbell %X\n", UFSHCIMem.TRUTRLDBR);
+ checkDrain();
+
/**step6 raise interrupt*/
gic->sendInt(intNum);
DPRINTF(UFSHostDevice, "Send interrupt @ transaction: 0x%8x!\n",
@@ -1838,6 +1840,8 @@
gic->clearInt(intNum);
DPRINTF(UFSHostDevice, "Clear interrupt: 0x%8x!\n", countInt);
+ checkDrain();
+
if (!(UFSHCIMem.TRUTRLDBR)) {
idlePhaseStart = curTick();
}
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