def devices_by_classcode(classcode):
"""Returns a list of dictionaries containg the bus, device and function for each PCI device with the specified classcode."""
return [dict(bus=bus, dev=dev, fun=fun)
for bus in range(int(os.getenv("pcie_startbus", "0"), 0), int(os.getenv("pcie_endbus", "0xff"), 0) + 1)
if bits.pci_read(bus, 0, 0, 0, bytes=4) != 0xffffffff
for dev in range(2**5)
for fun in range(2**3)
if classcode == bits.pci_read(bus, dev, fun, 8, bytes=4) >> 8]
def devices_by_classcode(classcode):
"""Returns a list of dictionaries containg the bus, device and function for each PCI device with the specified classcode."""
return [
dict(bus=bus, dev=dev, fun=fun)
for bus in range(int(os.getenv("pcie_startbus", "0"), 0),
int(os.getenv("pcie_endbus", "0xff"), 0) + 1)
if bits.pci_read(bus, 0, 0, 0, bytes=4) != 0xffffffff
for dev in range(2**5) for fun in range(2**3)
if classcode == bits.pci_read(bus, dev, fun, 8, bytes=4) >> 8
]
def ppm_test2():
pciexbase = bits.pci_read(0, 5, 0, 0x84, 4) & 0xfc000000
bits.pcie_set_base(pciexbase)
print 'pciexbase = 0x%x' % bits.pcie_get_base()
for bus in (0x3f, 0x7f, 0xbf, 0xff):
print 'bus 0x%x Interrupt Configuration Reg = 0x%x' % (
bus, bits.pcie_read(bus, 11, 0, 0x48, 4))
def ppm_test1():
pciexbase = bits.pci_read(0, 5, 0, 0x84, 4) & 0xfc000000
bits.pcie_set_base(pciexbase)
print 'pciexbase = 0x%x' % bits.pcie_get_base()
for bus in (0x3f, 0x7f, 0xbf, 0xff):
print 'bus 0x%x devhide_0 = 0x%x' % (
bus, bits.pcie_read(bus, 11, 3, 0xb0, 4))
def do_ehci_handoff(bus, dev, fun, warntime=1, failtime=5, to_os=True):
"""Tell BIOS to hand off USB HC to or from OS; returns True if successful and all handoffs occurred in the specified timeout, or False otherwise."""
ret = True
os_desired = int(to_os)
bios_desired = int(not to_os)
handoff_desc = "from BIOS to OS" if to_os else "from OS to BIOS"
usbbase = bits.pci_read(bus, dev, fun, pci.BAR0, bytes=4)
# Need a valid memory resource
if (usbbase == 0) or (usbbase & 1):
return None
hccparams = bits.readl(usbbase + EHCI_HCCPARAMS)
eecp = (hccparams >> 8) & 0xff
count = MAX_HOST_CONTROLLERS = 64
while eecp and count:
extcap = bits.pci_read(bus, dev, fun, eecp, bytes=4)
if extcap & EHCI_EXTCAP_HANDOFF:
starttime = time.time()
bits.pci_write(bus, dev, fun, eecp + 3, os_desired, bytes=1)
while True:
bios_semaphore = bits.pci_read(bus,
dev,
fun,
eecp + 2,
bytes=1)
duration = time.time() - starttime
if bios_semaphore == bios_desired:
break
if duration > failtime:
ret = False
break
if duration > failtime:
print "FAIL: USB host controller at PCI {bus:#04x}:{dev:#04x}.{fun:#03x} offset {eecp:#x} failed to hand off {handoff_desc} within {failtime}s (took {duration:0.3f}s)".format(
**locals())
elif duration > warntime:
print "WARNING: USB host controller at PCI {bus:#04x}:{dev:#04x}.{fun:#03x} offset {eecp:#x} failed to hand off {handoff_desc} within {warntime}s (took {duration:0.3f}s)".format(
**locals())
eecp = (extcap >> 8) & 0xff
count -= 1
if eecp:
print "Stopping at {} host controllers".format(MAX_HOST_CONTROLLERS)
return ret
def do_ehci_handoff(bus, dev, fun, warntime=1, failtime=5, to_os=True):
"""Tell BIOS to hand off USB HC to or from OS; returns True if successful and all handoffs occurred in the specified timeout, or False otherwise."""
ret = True
os_desired = int(to_os)
bios_desired = int(not to_os)
handoff_desc = "from BIOS to OS" if to_os else "from OS to BIOS"
usbbase = bits.pci_read(bus, dev, fun, pci.BAR0, bytes=4)
# Need a valid memory resource
if (usbbase == 0) or (usbbase & 1):
return None
hccparams = bits.readl(usbbase + EHCI_HCCPARAMS);
eecp = (hccparams >> 8) & 0xff;
count = MAX_HOST_CONTROLLERS = 64
while eecp and count:
extcap = bits.pci_read(bus, dev, fun, eecp, bytes=4)
if extcap & EHCI_EXTCAP_HANDOFF:
starttime = time.time()
bits.pci_write(bus, dev, fun, eecp + 3, os_desired, bytes=1)
while True:
bios_semaphore = bits.pci_read(bus, dev, fun, eecp + 2, bytes=1)
duration = time.time() - starttime
if bios_semaphore == bios_desired:
break
if duration > failtime:
ret = False
break
if duration > failtime:
print "FAIL: USB host controller at PCI {bus:#04x}:{dev:#04x}.{fun:#03x} offset {eecp:#x} failed to hand off {handoff_desc} within {failtime}s (took {duration:0.3f}s)".format(**locals())
elif duration > warntime:
print "WARNING: USB host controller at PCI {bus:#04x}:{dev:#04x}.{fun:#03x} offset {eecp:#x} failed to hand off {handoff_desc} within {warntime}s (took {duration:0.3f}s)".format(**locals())
eecp = (extcap >> 8) & 0xff;
count -= 1
if eecp:
print "Stopping at {} host controllers".format(MAX_HOST_CONTROLLERS)
return ret
def ppm_test2():
pciexbase = bits.pci_read(0, 5, 0, 0x84, 4) & 0xfc000000
bits.pcie_set_base(pciexbase)
print 'pciexbase = 0x%x' % bits.pcie_get_base()
for bus in (0x3f, 0x7f, 0xbf, 0xff):
print 'bus 0x%x Interrupt Configuration Reg = 0x%x' % (bus, bits.pcie_read(bus, 11, 0, 0x48, 4))
def ppm_test1():
pciexbase = bits.pci_read(0, 5, 0, 0x84, 4) & 0xfc000000
bits.pcie_set_base(pciexbase)
print 'pciexbase = 0x%x' % bits.pcie_get_base()
for bus in (0x3f, 0x7f, 0xbf, 0xff):
print 'bus 0x%x devhide_0 = 0x%x' % (bus, bits.pcie_read(bus, 11, 3, 0xb0, 4))