def test_pcie_link_control_aspm(nvme0, pcie, aspm): #1:0
linkctrl_addr = pcie.cap_offset(0x10) + 16
linkctrl = pcie.register(linkctrl_addr, 2)
logging.info("link control register [0x%x]= 0x%x" %
(linkctrl_addr, linkctrl))
# set ASPM control
pcie[linkctrl_addr] = (linkctrl & 0xfc) | aspm
linkctrl = pcie.register(linkctrl_addr, 2)
logging.info("link control register [0x%x]= 0x%x" %
(linkctrl_addr, linkctrl))
# IO queue for read commands
cq = IOCQ(nvme0, 1, 16, PRP())
sq = IOSQ(nvme0, 1, 16, PRP(), cqid=1)
# read lba 0 for 1000 times, interleaved with delays
read_cmd = SQE(2, 1)
read_cmd.prp1 = PRPList()
pbit = 1
for i in range(1000):
logging.debug(i)
slot = i % 16
if slot == 0:
pbit = not pbit
next_slot = slot + 1
if next_slot == 16:
next_slot = 0
sq[slot] = read_cmd
sq.tail = next_slot
while cq[slot].p == pbit:
pass
cq.head = next_slot
# delay to trigger ASPM
time.sleep(0.01)
sq.delete()
cq.delete()
time.sleep(1)
def test_send_cmd_2sq_1cq(nvme0):
# 2 SQ share one CQ
cq = IOCQ(nvme0, 1, 10, PRP())
sq1 = IOSQ(nvme0, 1, 10, PRP(), cqid=1)
sq2 = IOSQ(nvme0, 2, 16, PRP(), cqid=1)
# write lba0, 16K data organized by PRPList
write_cmd = SQE(1, 1) # write to namespace 1
write_cmd.prp1 = PRP() # PRP1 is a 4K page
prp_list = PRPList() # PRPList contains 3 pages
prp_list[0] = PRP()
prp_list[1] = PRP()
prp_list[2] = PRP()
write_cmd.prp2 = prp_list # PRP2 points to the PRPList
write_cmd[10] = 0 # starting LBA
write_cmd[12] = 31 # LBA count: 32, 16K, 4 pages
write_cmd.cid = 123 # verify cid later
# send write commands in both SQ
sq1[0] = write_cmd # fill command dwords in SQ1
write_cmd.cid = 567 # verify cid later
sq2[0] = write_cmd # fill command dwords in SQ2
sq2.tail = 1 # ring doorbell of SQ2 first
time.sleep(0.1) # delay to ring SQ1,
sq1.tail = 1 # so command in SQ2 should complete first
# wait for 2 command completions
while CQE(cq[1]).p == 0:
pass
# check first cpl
cqe = CQE(cq[0])
assert cqe.sqid == 2
assert cqe.sqhd == 1
assert cqe.cid == 567
# check second cpl
cqe = CQE(cq[1])
assert cqe.sqid == 1
assert cqe.sqhd == 1
assert cqe.cid == 123
# update cq head doorbell to device
cq.head = 2
# delete all queues
sq1.delete()
sq2.delete()
cq.delete()