def perf_check():
bytes_size = [ 128, 256, 512, 1024, 2048, 4096 ]
dl = PCIDevices()
print
for vendor in [FUSION_VENDOR, MELLANOX_VENDOR]:
check_devs = dl.get(vendor=vendor)
for check_dev in check_devs:
# XXX Need to be safer with max payload, check all possible branches.
worst_supported_maxpayload=0xffff
dev_index = 0
for dev in dl.walk_from_root(check_dev):
try:
maxpayload_s = dev.config.read("pcie_device_capabilities_max_payload_size_supported")
except:
print "WARNING: Could not get maxpayload supported for %s" % (dev.addr)
continue
try:
maxpayload_c = dev.config.read("pcie_device_control_max_payload_size")
except:
print "WARNING: Could not get maxpayload setting for %s" % (dev.addr)
continue
try:
maxreadreq = dev.config.read("pcie_device_control_max_read_request_size")
except:
print "WARNING: Could not get max readreq setting for %s" % (dev.addr)
continue
if maxpayload_s < worst_supported_maxpayload:
worst_supported_maxpayload = maxpayload_s
#
indent = " " * dev_index
msg = "%s%s " % (indent, dev.addr)
if dev.vendor == FUSION_VENDOR:
msg += "-- Fusion Device "
if dev.vendor == MELLANOX_VENDOR:
msg += "-- Mellanox Device "
if dev.vendor == PLX_VENDOR:
msg += "-- PLX Device "
if dev.is_root:
msg += "-- Root Device"
print msg
print "%s MaxPayload supported %d" % (indent, bytes_size[maxpayload_s])
print "%s MaxPayload configured %d" % (indent, bytes_size[maxpayload_c])
print "%s MaxReadReq %d" % (indent, bytes_size[maxreadreq])
if worst_supported_maxpayload == 0:
print "%s Warning: MaxPayload can go no higher than 128b, performance may suffer!" % (indent)
if maxpayload_c < worst_supported_maxpayload:
print "%s Warning: MaxPayload was not configured optimally for this device, bumping up to %d" % (indent, bytes_size[worst_supported_maxpayload])
dev.config.write("pcie_device_control_max_payload_size", worst_supported_maxpayload)
if maxreadreq < 3:
print "%s Warning: MaxReadReq is less than 1024, bumping up" % (indent)
dev.config.write("pcie_device_control_max_read_request_size", 3)
dev_index += 1
print
print
def select_devices():
dl = PCIDevices()
for vendor in [FUSION_VENDOR, MELLANOX_VENDOR]:
check_devs = dl.get(vendor=vendor)
for check_dev in check_devs:
print "### Checking device %s" % (check_dev.addr)
check_power(check_dev)
check_maxpayload(check_dev, dl)
check_maxreadreq(check_dev, dl)
check_errors(check_dev)
check_phantom(check_dev)
check_tag(check_dev)
def kill_dev():
bytes_size = [ 128, 256, 512, 1024, 2048, 4096 ]
dl = PCIDevices()
fusion_devs = dl.get(device=FUSION_IODIMM_GEN1)
# Try to get fioa to kill
fusion_devs.sort(key=lambda m: str(m.addr))
kill_dimm = fusion_devs[0]
print ""
print "Killing device '%s' using link control at parent '%s'" % (kill_dimm.addr, kill_dimm.parent.addr)
kill_dimm.parent.config.write("pcie_link_control_link_disable", 1)
def kill_dev():
bytes_size = [128, 256, 512, 1024, 2048, 4096]
dl = PCIDevices()
fusion_devs = dl.get(device=FUSION_IODIMM_GEN1)
# Try to get fioa to kill
fusion_devs.sort(key=lambda m: str(m.addr))
kill_dimm = fusion_devs[0]
print ""
print "Killing device '%s' using link control at parent '%s'" % (
kill_dimm.addr, kill_dimm.parent.addr)
kill_dimm.parent.config.write("pcie_link_control_link_disable", 1)
def main():
dl = PCIDevices()
#fusion_devs = dl.get(device=FUSION_IODIMM_GEN1)
fusion_devs = dl.get(vendor=FUSION_VENDOR)
for fdev in fusion_devs:
print ""
print ""
for dev in list(dl.walk_to_root(fdev))[:-1]:
# [:-1], don't want to futs with 00:00.0
print ""
disable_pcie_error_prop(dev)
disable_pcie_serr(dev)
disable_legacy_pci_error(dev)
disable_legacy_pci_serr(dev)
def main():
dl = PCIDevices()
#fusion_devs = dl.get(device=FUSION_IODIMM_GEN1)
fusion_devs = dl.get(vendor=FUSION_VENDOR)
for fdev in fusion_devs:
print ""
print ""
for dev in list(dl.walk_to_root(fdev))[:-1]:
# [:-1], don't want to futs with 00:00.0
print ""
disable_pcie_error_prop(dev)
disable_pcie_serr(dev)
disable_legacy_pci_error(dev)
disable_legacy_pci_serr(dev)
def walk_all_devices():
dl = PCIDevices()
for pci_dev in dl.devices:
aspm_current = None
try:
pci_dev.config.enumerate()
aspm_current = pci_dev.config.read("pcie_link_control_aspm_control")
except Exception, e:
#print "Error reading ASPM state for device %s: %s" % (pci_dev.addr, e)
continue
print "ASPM for %s is 0x%x" % (pci_dev.addr, aspm_current)
if aspm_current != 0:
print " disabeling ASPM"
pci_dev.config.write("pcie_link_control_aspm_control", 0)
def perf_check():
bytes_size = [128, 256, 512, 1024, 2048, 4096]
dl = PCIDevices()
print
for vendor in [FUSION_VENDOR, MELLANOX_VENDOR]:
check_devs = dl.get(vendor=vendor)
for check_dev in check_devs:
# XXX Need to be safer with max payload, check all possible branches.
worst_supported_maxpayload = 0xffff
dev_index = 0
for dev in dl.walk_from_root(check_dev):
try:
maxpayload_s = dev.config.read(
"pcie_device_capabilities_max_payload_size_supported")
except:
print "WARNING: Could not get maxpayload supported for %s" % (
dev.addr)
continue
try:
maxpayload_c = dev.config.read(
"pcie_device_control_max_payload_size")
except:
print "WARNING: Could not get maxpayload setting for %s" % (
dev.addr)
continue
try:
maxreadreq = dev.config.read(
"pcie_device_control_max_read_request_size")
except:
print "WARNING: Could not get max readreq setting for %s" % (
dev.addr)
continue
if maxpayload_s < worst_supported_maxpayload:
worst_supported_maxpayload = maxpayload_s
#
indent = " " * dev_index
msg = "%s%s " % (indent, dev.addr)
if dev.vendor == FUSION_VENDOR:
msg += "-- Fusion Device "
if dev.vendor == MELLANOX_VENDOR:
msg += "-- Mellanox Device "
if dev.vendor == PLX_VENDOR:
msg += "-- PLX Device "
if dev.is_root:
msg += "-- Root Device"
print msg
print "%s MaxPayload supported %d" % (
indent, bytes_size[maxpayload_s])
print "%s MaxPayload configured %d" % (
indent, bytes_size[maxpayload_c])
print "%s MaxReadReq %d" % (indent, bytes_size[maxreadreq])
if worst_supported_maxpayload == 0:
print "%s Warning: MaxPayload can go no higher than 128b, performance may suffer!" % (
indent)
if maxpayload_c < worst_supported_maxpayload:
print "%s Warning: MaxPayload was not configured optimally for this device, bumping up to %d" % (
indent, bytes_size[worst_supported_maxpayload])
dev.config.write("pcie_device_control_max_payload_size",
worst_supported_maxpayload)
if maxreadreq < 3:
print "%s Warning: MaxReadReq is less than 1024, bumping up" % (
indent)
dev.config.write(
"pcie_device_control_max_read_request_size", 3)
dev_index += 1
print
print
