def test_reset_with_outstanding_io(nvme0, nvme0n1, delay, io_count=100):
nvme0n1.format(512)
logging.debug("format done")
cq = IOCQ(nvme0, 1, 128, PRP(1024 * 64))
sq = IOSQ(nvme0, 1, 128, PRP(1024 * 64), cqid=1)
write_cmd = SQE(1, 1)
write_cmd[12] = 7 # 4K write
buf_list = []
for i in range(io_count):
buf = PRP(ptype=32, pvalue=i) # use cid as data pattern
buf_list.append(buf)
write_cmd.prp1 = buf
write_cmd.cid = i
write_cmd[10] = i
sq[i] = write_cmd
sq.tail = io_count
# reset while io is active
logging.debug("write done")
time.sleep(delay)
nvme0.reset()
# read after reset with outstanding writes
cq = IOCQ(nvme0, 1, 128, PRP(1024 * 64))
sq = IOSQ(nvme0, 1, 128, PRP(1024 * 64), cqid=1)
read_cmd = SQE(2, 1)
read_cmd[12] = 7 # 4K read
buf_list = []
for i in range(io_count):
buf = PRP()
buf_list.append(buf)
read_cmd.prp1 = buf
read_cmd.cid = i
read_cmd[10] = i
sq[i] = read_cmd
sq.tail = io_count
logging.debug("read done")
# data verify
time.sleep(3)
assert cq[io_count - 1].p != 0
for i in range(io_count):
cid = cq[i].cid
dp = buf_list[cq[i].cid].data(3, 0) # check data pattern
logging.debug("cpl %d: cid %d, data pattern %d" % (i, cid, dp))
assert dp == 0 or dp == cid
sq.delete()
cq.delete()
def test_write_mdts(nvme0, mdts):
cq = IOCQ(nvme0, 1, 2, PRP())
sq = IOSQ(nvme0, 1, 2, PRP(), cqid=1)
# prp for the long buffer
write_buf_1 = PRP(ptype=32, pvalue=0xaaaaaaaa)
pages = mdts // 8
pages -= 1
prp_list = PRPList()
prp_list_head = prp_list
while pages:
for i in range(511):
if pages:
prp_list[i] = PRP()
pages -= 1
logging.debug(pages)
if pages > 1:
tmp = PRPList()
prp_list[511] = tmp
prp_list = tmp
logging.debug("prp_list")
elif pages == 1:
prp_list[511] = PRP()
pages -= 1
logging.debug(pages)
w1 = SQE(1, 1)
w1.prp1 = write_buf_1
w1.prp2 = prp_list_head
w1[12] = mdts - 1 # 0based, nlba
w1.cid = 0x123
sq[0] = w1
sq.tail = 1
time.sleep(1)
cqe = CQE(cq[0])
logging.info(cqe)
assert cqe.p == 1
assert cqe.cid == 0x123
assert cqe.sqhd == 1
logging.info("cqe status is {}".format(cqe.status))
assert cqe.status == 0 or cqe.status == 2
cq.head = 1
sq.delete()
cq.delete()
def test_p_invert_after_cq_2_pass(nvme0):
"""
The value of the Phase Tag is inverted each pass filling the Complete Queue.
"""
# cqid: 1, PC, depth: 2
cq = IOCQ(nvme0, 1, 2, PRP())
# create four SQ, both use the same CQ
sq3 = IOSQ(nvme0, 3, 10, PRP(), cqid=1)
# IO command templates: opcode and namespace
write_cmd = SQE(1, 1)
# write in sq3
w1 = SQE(*write_cmd)
write_buf = PRP(ptype=32, pvalue=0xaaaaaaaa)
w1.prp1 = write_buf
w1[10] = 1
w1[12] = 1 # 0based
w1.cid = 0x123
sq3[0] = w1
sq3.tail = 1
# add some delay, so ssd should finish w1 before w2
time.sleep(0.1)
# write in sq5
w1.cid = 0x567
sq3[1] = w1
sq3.tail = 2
logging.info("aaa")
# cqe for w1
while CQE(cq[0]).p == 0: pass
cqe = CQE(cq[0])
assert cqe.cid == 0x123
assert cqe.sqid == 3
assert cqe.sqhd == 1
cq.head = 1
# cqe for w2
logging.info("bbb")
while CQE(cq[1]).p == 0: pass
logging.info("ccc")
cqe = CQE(cq[1])
assert cqe.cid == 0x567
assert cqe.sqid == 3
assert cqe.sqhd == 2
cq.head = 0
assert CQE(cq[0]).p == 1
assert CQE(cq[1]).p == 1
# write in sq3
w1.cid = 0x147
sq3[2] = w1
sq3.tail = 3
# add some delay, so ssd should finish w1 before w2
time.sleep(0.1)
# write in sq5
w1.cid = 0x167
sq3[3] = w1
sq3.tail = 4
# cqe for w3
while CQE(cq[0]).p == 1: pass
cqe = CQE(cq[0])
assert cqe.cid == 0x147
assert cqe.sqid == 3
assert cqe.sqhd == 3
cq.head = 1
# cqe for w4
while CQE(cq[1]).p == 1: pass
cqe = CQE(cq[1])
assert cqe.cid == 0x167
assert cqe.sqid == 3
assert cqe.sqhd == 4
cq.head = 0
assert CQE(cq[0]).p == 0
assert CQE(cq[1]).p == 0
def test_controller_mdts(nvme0,nvme0n1):
if nvme0.mdts == 1024*1024: # up to 1MB
pytest.skip("mdts is maximum")
mps_min = (nvme0.cap>>48) & 0xf
logging.info("mps_min:{}".format(mps_min))
mdts=nvme0.id_data(77,77)
logging.info("mdts:{}".format(mdts))
max_data_size=(2**mdts)*(2**(12+mps_min))
logging.info(max_data_size)
max_pages=max_data_size//4//1024
pages=max_pages-1
max_lba=max_data_size//512
cq = IOCQ(nvme0, 1, 5, PRP())
sq = IOSQ(nvme0, 1, 5, PRP(), cqid=1)
# prp for the long buffer
write_buf_1 = PRP(ptype=32, pvalue=0xaaaaaaaa)
prp_list = PRPList()
prp_list_head = prp_list
while pages:
for i in range(511):
if pages:
prp_list[i] = PRP()
pages -= 1
logging.debug(pages)
if pages>1:
tmp = PRPList()
prp_list[511] = tmp
prp_list = tmp
logging.debug("prp_list")
elif pages==1:
prp_list[511] = PRP()
pages -= 1
logging.debug(pages)
w1 = SQE(1, 1)
w1.prp1 = write_buf_1
w1.prp2 = prp_list_head
w1[12] = max_lba-1 # 0based, nlba
w1.cid = 0x123
sq[0] = w1
sq.tail = 1
time.sleep(1)
cqe = CQE(cq[0])
logging.info(cqe)
assert cqe.p == 1
assert cqe.cid == 0x123
assert cqe.sqhd == 1
assert cqe.status == 0
cq.head = 1
w2 = SQE(1, 1)
w2.prp1 = write_buf_1
w2.prp2 = prp_list_head
w2[12] = max_lba # 0based, nlba
w2.cid = 0x234
sq[1] = w2
sq.tail = 2
time.sleep(1)
cqe = CQE(cq[1])
logging.info(cqe)
assert cqe.p == 1
assert cqe.cid == 0x234
assert cqe.sqhd == 2
assert cqe.status == 2
cq.head = 2
r1 = SQE(2, 1)
r1.prp1 = write_buf_1
r1.prp2 = prp_list_head
r1[12] = max_lba # 0based, nlba
r1.cid = 0x345
sq[2] = r1
sq.tail = 3
time.sleep(1)
cqe = CQE(cq[2])
logging.info(cqe)
assert cqe.p == 1
assert cqe.cid == 0x345
assert cqe.sqhd == 3
assert cqe.status == 2
cq.head = 3
r2 = SQE(2, 1)
r2.prp1 = write_buf_1
r2.prp2 = prp_list_head
r2[12] = max_lba-1 # 0based, nlba
r2.cid = 0x456
sq[3] = r2
sq.tail = 4
time.sleep(1)
cqe = CQE(cq[3])
logging.info(cqe)
assert cqe.p == 1
assert cqe.cid == 0x456
assert cqe.sqhd == 4
assert cqe.status == 0
cq.head = 4
sq.delete()
cq.delete()