add a backoff algorithm when nacks are received by devices

add seperate response buffers and request queue sizes in bus bridge
add delay to respond to a nack in the bus bridge

src/dev/i8254xGBe.cc:
src/dev/ide_ctrl.cc:
src/dev/ns_gige.cc:
src/dev/pcidev.hh:
src/dev/sinic.cc:
    add backoff delay parameters
src/dev/io_device.cc:
src/dev/io_device.hh:
    add a backoff algorithm when nacks are received.
src/mem/bridge.cc:
src/mem/bridge.hh:
    add seperate response buffers and request queue sizes
    add a new parameters to specify how long before a nack in ready to go after a packet that needs to be nacked is received
src/mem/cache/cache_impl.hh:
    assert on the
src/mem/tport.cc:
    add a friendly assert to make sure the packet was inserted into the list

--HG--
extra : convert_revision : 3595ad932015a4ce2bb72772da7850ad91bd09b1

1 files changed, 6 insertions, 0 deletions

diff --git a/src/dev/sinic.cc b/src/dev/sinic.cc
index f61c161aa..1a72652da 100644
--- a/src/dev/sinic.cc
+++ b/src/dev/sinic.cc
@@ -1635,6 +1635,8 @@ BEGIN_DECLARE_SIM_OBJECT_PARAMS_WNS(Sinic, SinicDevice)
 
     SimObjectParam<System *> system;
     SimObjectParam<Platform *> platform;
+    Param<Tick> min_backoff_delay;
+    Param<Tick> max_backoff_delay;
     SimObjectParam<PciConfigData *> configdata;
     Param<uint32_t> pci_bus;
     Param<uint32_t> pci_dev;
@@ -1678,6 +1680,8 @@ BEGIN_INIT_SIM_OBJECT_PARAMS_WNS(Sinic, SinicDevice)
 
     INIT_PARAM(system, "System pointer"),
     INIT_PARAM(platform, "Platform pointer"),
+    INIT_PARAM(min_backoff_delay, "Minimum delay after receving a nack packed"),
+    INIT_PARAM(max_backoff_delay, "Maximum delay after receving a nack packed"),
     INIT_PARAM(configdata, "PCI Config data"),
     INIT_PARAM(pci_bus, "PCI bus ID"),
     INIT_PARAM(pci_dev, "PCI device number"),
@@ -1723,6 +1727,8 @@ CREATE_SIM_OBJECT_WNS(Sinic, SinicDevice)
     params->name = getInstanceName();
     params->platform = platform;
     params->system = system;
+    params->min_backoff_delay = min_backoff_delay;
+    params->max_backoff_delay = max_backoff_delay;
     params->configData = configdata;
     params->busNum = pci_bus;
     params->deviceNum = pci_dev;