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x393_sata
Commit a432d1a7 authored by Mikhail Karpenko's avatar Mikhail Karpenko
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Set/get disk power management features from x393sata.py

parent b37e83be
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py393sata/x393sata.py
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......@@ -150,6 +150,11 @@ ATA_RDMA_EXT = 0x25 # Read DMA devices that support 48-bit Addressing
ATA_RBUF_PIO = 0xe4 # Read 512 bytes from device buffer in PIO mode
ATA_RBUF_DMA = 0xe9 # Read 512 bytes from device buffer in DMA mode
ATA_READ_LOG_EXT = 0x2f
ATA_SET_FEATURES = 0xef # Set features command
# SET FEATURES command subcommand codes
APM_ENABLE = 0x05
APM_DISABLE = 0x85
class x393sata(object):
DRY_MODE= True # True
......@@ -1465,6 +1470,157 @@ class x393sata(object):
else:
return '10389B'
# raise Exception ("Unknown camera MAC address used to get 10389 revision. Only *:01 (10389) and *:02 (10389B) are currently defined")
def set_features(self, feature, param = 0, do_not_start = False, prd_irqs = None):
"""
Send SET FEATURES command
@param feature - subcommand to be processed (see ATA/ATAPI command set 7.45 for the list of subcommands);
supported commands: 0x05 (enable APM feature set), 0x85 (disable APM feature set)
@param param - parameter for the feature
@param do_not_start - do not actually launch the command by writing 1 to command_issue (CI) bit in PxCI register
@param prd_irqs - None or a tuple/list with per-PRD interrupts
"""
supported_subcmd = [APM_ENABLE, APM_DISABLE]
if not feature in supported_subcmd:
raise Exception("Subcommand 0x%x is not supported" % (feature))
# Clear interrupt register
self.x393_mem.write_mem(self.get_reg_address('HBA_PORT__PxIS'), 0xffffffff)
self.sync_for_cpu('H2D',COMMAND_ADDRESS, 256) # command and PRD table
# clear system memory for the command
for a in range(64):
self.x393_mem.write_mem(COMMAND_ADDRESS + 4*a, 0)
#Setup command table in system memory
self.x393_mem.write_mem(COMMAND_ADDRESS + 0,
FIS_H2DR | # FIS type - H2D register (0x27)
(0x80 << 8) | # set C = 1
(ATA_SET_FEATURES << 16) | # Command = 0xEF
( feature << 24)) # features = subcommand, see ATA/ATAPI command set 7.45 table 104
# other DWORDs are subcommand scpecific
if feature == APM_ENABLE:
count = param & 0xff
self.x393_mem.write_mem(COMMAND_ADDRESS + 12,
count | # count field is subcommand specific
(0x08 << 24)) # control field as set by hdparm
# Setup command header
self.x393_mem.write_mem(MAXI1_ADDR + COMMAND_HEADER0_OFFS + (0 << 2),
(5 << 0) | # 'CFL' - number of DWORDs in this CFIS
(0 << 5) | # 'A' Not ATAPI
(0 << 6) | # 'W' Not write to device
# (1 << 7) | # 'P' Prefetchable = 1
(0 << 7) | # 'P' Prefetchable = 0
(0 << 8) | # 'R' Not a Reset
(0 << 9) | # 'B' Not a BIST
# (1 << 10) | # 'C' Do clear BSY/CI after transmitting this command
(0 << 10) | # 'C' Do clear BSY/CI after transmitting this command
(0 << 16)) # 'PRDTL' - number of PRDT entries (no data required)
self.x393_mem.write_mem(MAXI1_ADDR + COMMAND_HEADER0_OFFS + (2 << 2), (COMMAND_ADDRESS)) # 'CTBA' - Command table base address
self.sync_for_device('H2D',COMMAND_ADDRESS, 256) # command and PRD table
self.sync_for_device('D2H',DATAIN_ADDRESS, 512)
# Set PxCMD.ST bit (it may already be set)
self.x393_mem.write_mem(self.get_reg_address('HBA_PORT__PxCMD'), 0x11) # .ST and .FRE bits (FRE is readonly 1 anyway)
# Set Command Issued
if do_not_start:
print ('Run the following command to start the comand:')
print("mem.write_mem(sata.get_reg_address('HBA_PORT__PxCI'), 1)")
else:
self.x393_mem.write_mem(self.get_reg_address('HBA_PORT__PxCI'), 1)
print("Command table data:")
print("_=mem.mem_dump (0x%x, 0x10,4)"%(COMMAND_ADDRESS))
self.x393_mem.mem_dump (COMMAND_ADDRESS, 0x20,4)
#Wait interrupt
for _ in range(10):
istat = self.x393_mem.read_mem(self.get_reg_address('HBA_PORT__PxIS'))
if istat:
self.parse_register(group_range = ['HBA_PORT__PxIS'],
skip0 = True,
dword = None)
if istat != 1: #DHRS interrupt (for PIO - 2)
print ("\n ======================Got wrong interrupt ============================")
self.reg_status()
print("_=mem.mem_dump (0x%x, 0x4,4)"%(MAXI1_ADDR + DBG_OFFS))
self.x393_mem.mem_dump (MAXI1_ADDR + DBG_OFFS, 0x4,4)
print("Datascope (debug) data:")
print("_=mem.mem_dump (0x%x, 0x20,4)"%(DATASCOPE_ADDR))
self.x393_mem.mem_dump (DATASCOPE_ADDR, 0xa0,4)
dd =0
for a in range(0x80001000,0x80001014,4):
dd |= self.x393_mem.read_mem(a)
if dd == 0:
print ("*** Probably got cache/write buffer problem, continuing ***")
break
raise Exception("Failed to get interrupt")
break
sleep(0.1)
else:
print ("\n ====================== Failed to get interrupt ============================")
self.reg_status()
print("_=mem.mem_dump (0x%x, 0x4,4)"%(MAXI1_ADDR + DBG_OFFS))
self.x393_mem.mem_dump (MAXI1_ADDR + DBG_OFFS, 0x4,4)
print("Datascope (debug) data:")
print("_=mem.mem_dump (0x%x, 0x100,4)"%(DATASCOPE_ADDR))
self.x393_mem.mem_dump (DATASCOPE_ADDR, 0x200,4)
raise Exception("Failed to get interrupt")
print("Datascope (debug) data:")
print("_=mem.mem_dump (0x%x, 0x200,4)"%(DATASCOPE_ADDR))
self.x393_mem.mem_dump (DATASCOPE_ADDR, 0x200,4)
def get_features(self):
"""
Send IDENTIFY DEVICE command and (partially) parse its output
"""
self.setup_pio_read_identify_command()
# get power management features, see ATA/ATAPI command set 7.45.9
# all offsets here are in WORDS as given in IDENTIFY DEVICE data table and should be doubled
print("Power management features:")
id_word = self.x393_mem.read_mem(DATAIN_ADDRESS + IDENTIFY_BUF + 2 * 82)
if id_word & 0x08:
print("Power management feature set is supported (see ATA/ATAPI command set 4.15 for the full list of supported commands)")
id_word = self.x393_mem.read_mem(DATAIN_ADDRESS + IDENTIFY_BUF + 2 * 83)
if id_word & 0x08:
id_word = self.x393_mem.read_mem(DATAIN_ADDRESS + IDENTIFY_BUF + 2 * 86)
if (id_word & 0x08):
is_enabled = "enabled"
else:
is_enabled = "disabled"
print("\tAPM feature set is supported and %s" % (is_enabled))
else:
print("\tAPM feature set is NOT supported")
id_word = self.x393_mem.read_mem(DATAIN_ADDRESS + IDENTIFY_BUF + 2 * 91) & 0xff
if id_word == 0x0:
level = "reserved"
elif id_word == 0x1:
level = "minimum pwr with standby mode"
elif id_word > 0x1 and id_word <= 0x7f:
level = "intermediate pwr with standby mode"
elif id_word == 0x80:
level = "minimum pwr without standby mode"
elif id_word >= 0x81 and id_word <= 0xfd:
level = "intermediate pwr without standby mode"
elif id_word == 0xfe:
level = "maximun performance"
elif id_word == 0xff:
level = "reserved"
print("\tCurrent APM level: 0x%x [%s]" % (id_word, level))
# get SATA features related to power management, see ATA/ATAPI command set 7.45.17
id_word = self.x393_mem.read_mem(DATAIN_ADDRESS + IDENTIFY_BUF + 2 * 78)
if id_word & 0x08:
id_word = self.x393_mem.read_mem(DATAIN_ADDRESS + IDENTIFY_BUF + 2 * 79)
if id_word & 0x08:
state = "device initiated power management enabled"
else:
state = "device initiated power management disabled"
print("\tDevice supports initiating power management, %s" % (state))
id_word = self.x393_mem.read_mem(DATAIN_ADDRESS + IDENTIFY_BUF + 2 * 76)
if id_word & 0x4000:
print("\tSupports Device Automatic Partial to Slumber transition")
if id_word & 0x2000:
print("\tSupports Host Automatic Partial to Slumber transition")
if id_word & 0x200:
print("\tSupports receipt of host initiated power management requests")
def init_sata():
......
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