##
## This file is part of the libsigrokdecode project.
##
-## Copyright (C) 2018 Dave Craig<dcraig@brightsign.biz>
+## Copyright (C) 2018 Dave Craig <dcraig@brightsign.biz>
##
## This program is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
17: 'RepeaterAuth_Stream_Ready',
}
+write_items = {
+ 0x00: '1.4 Bksv - Receiver KSV',
+ 0x08: '1.4 Ri\' - Link Verification',
+ 0x0a: '1.4 Pj\' - Enhanced Link Verification',
+ 0x10: '1.4 Aksv - Transmitter KSV',
+ 0x15: '1.4 Ainfo - Transmitter KSV',
+ 0x18: '1.4 An - Session random number',
+ 0x20: '1.4 V\'H0',
+ 0x24: '1.4 V\'H1',
+ 0x28: '1.4 V\'H2',
+ 0x2c: '1.4 V\'H3',
+ 0x30: '1.4 V\'H4',
+ 0x40: '1.4 Bcaps',
+ 0x41: '1.4 Bstatus',
+ 0x43: '1.4 KSV FIFO',
+ 0x50: 'HDCP2Version',
+ 0x60: 'Write_Message',
+ 0x70: 'RxStatus',
+ 0x80: 'Read_Message',
+}
+
class Decoder(srd.Decoder):
api_version = 3
id = 'hdcp'
license = 'gplv2+'
inputs = ['i2c']
outputs = ['hdcp']
+ tags = ['PC', 'Security/crypto']
annotations = \
tuple(('message-0x%02X' % i, 'Message 0x%02X' % i) for i in range(18)) + (
('summary', 'Summary'),
- ('warnings', 'Warnings'),
+ ('warning', 'Warning'),
)
annotation_rows = (
('messages', 'Messages', tuple(range(18))),
- ('summary', 'Summary', (18,)),
+ ('summaries', 'Summaries', (18,)),
('warnings', 'Warnings', (19,)),
)
elif cmd != 'START REPEAT':
return
self.state = 'GET SLAVE ADDR'
-
elif self.state == 'GET SLAVE ADDR':
if cmd == 'ADDRESS READ':
self.state = 'BUFFER DATA'
self.state = 'WRITE OFFSET'
if databyte != 0x3a:
self.state = 'IDLE'
-
elif self.state == 'WRITE OFFSET':
if cmd == 'DATA WRITE':
- if databyte == 0x00:
- self.type = '1.4 Bksv - Receiver KSV'
- elif databyte == 0x08:
- self.type = '1.4 Ri\' - Link Verification'
- elif databyte == 0x0a:
- self.type = '1.4 Pj\' - Enhanced Link Verification'
- elif databyte == 0x10:
- self.type = '1.4 Aksv - Transmitter KSV'
- self.state = 'BUFFER DATA'
- elif databyte == 0x15:
- self.type = '1.4 Ainfo- Transmitter KSV'
+ if databyte in write_items:
+ self.type = write_items[databyte]
+ if databyte in (0x10, 0x15, 0x18, 0x60):
self.state = 'BUFFER DATA'
- elif databyte == 0x18:
- self.type = '1.4 An- Session random number'
- self.state = 'BUFFER DATA'
- elif databyte == 0x20:
- self.type = '1.4 V\'H0'
- elif databyte == 0x24:
- self.type = '1.4 V\'H1'
- elif databyte == 0x28:
- self.type = '1.4 V\'H2'
- elif databyte == 0x2c:
- self.type = '1.4 V\'H3'
- elif databyte == 0x30:
- self.type = '1.4 V\'H4'
- elif databyte == 0x40:
- self.type = '1.4 Bcaps'
- elif databyte == 0x41:
- self.type = '1.4 Bstatus'
- elif databyte == 0x43:
- self.type = '1.4 KSV FIFO'
- elif databyte == 0x50:
- self.type = 'HDCP2Version'
- elif databyte == 0x60:
- self.type = 'Write_Message'
- self.state = 'BUFFER DATA'
- elif databyte == 0x70:
- self.type = 'RxStatus'
- elif databyte == 0x80:
- self.type = 'Read_Message'
-
# If we are reading, then jump back to IDLE for a start repeat.
# If we are writing, then just continue onwards.
if self.state == 'BUFFER DATA':
- self.state = 'BUFFER DATA'
+ pass
elif self.type != '':
self.state = 'IDLE'
-
elif self.state == 'BUFFER DATA':
- if (cmd == 'STOP') or (cmd == 'NACK'):
+ if cmd in ('STOP', 'NACK'):
self.es_block = es
self.state = 'IDLE'
- if self.type != '':
- if self.stack:
- if self.type == 'RxStatus':
- rxstatus = (self.stack.pop() << 8) | self.stack.pop()
- reauth_req = (rxstatus & 0x800) != 0
- ready = (rxstatus & 0x400) != 0
- length = rxstatus & 0x3ff
- text = '%s, reauth %s, ready %s, length %s' % (self.type, reauth_req, ready, length)
- self.putb([18, [text]])
- elif self.type == '1.4 Bstatus':
- bstatus = (self.stack.pop() << 8) | self.stack.pop()
- device_count = bstatus & 0x7f
- max_devs_exceeded = (bstatus & 0x80) != 0
- depth = ((bstatus & 0x700) >> 8)
- max_cascase_exceeded = bstatus & 0x800
- hdmi_mode = (bstatus & 0x1000) != 0
- text = '%s, %s devices, depth %s, hdmi mode %s' % (self.type, device_count, depth, hdmi_mode)
- self.putb([18, [text]])
- elif self.type == 'Read_Message':
- msg = self.stack.pop(0)
- self.putb([msg, ['%s, %s' % (self.type, msg_ids.get(msg, 'Invalid'))]])
- elif self.type == 'Write_Message':
- msg = self.stack.pop(0)
- self.putb([msg, ['%s, %s' % (self.type, msg_ids.get(msg, 'Invalid'))]])
- elif self.type == 'HDCP2Version':
- version = self.stack.pop(0)
- if (version & 0x4):
- self.putb([18, ['HDCP2']])
- else:
- self.putb([18, ['NOT HDCP2']])
- else:
- self.putb([18, ['%s' % (self.type)]])
+ if self.type == '':
+ return
+ if not self.stack:
+ self.putb([18, ['%s' % (self.type)]])
+ return
+ if self.type == 'RxStatus':
+ rxstatus = (self.stack.pop() << 8) | self.stack.pop()
+ reauth_req = (rxstatus & 0x800) != 0
+ ready = (rxstatus & 0x400) != 0
+ length = rxstatus & 0x3ff
+ text = '%s, reauth %s, ready %s, length %s' % \
+ (self.type, reauth_req, ready, length)
+ self.putb([18, [text]])
+ elif self.type == '1.4 Bstatus':
+ bstatus = (self.stack.pop() << 8) | self.stack.pop()
+ device_count = bstatus & 0x7f
+ max_devs_exceeded = (bstatus & 0x80) != 0
+ depth = ((bstatus & 0x700) >> 8)
+ max_cascase_exceeded = bstatus & 0x800
+ hdmi_mode = (bstatus & 0x1000) != 0
+ text = '%s, %s devices, depth %s, hdmi mode %s' % \
+ (self.type, device_count, depth, hdmi_mode)
+ self.putb([18, [text]])
+ elif self.type == 'Read_Message':
+ msg = self.stack.pop(0)
+ self.putb([msg, ['%s, %s' % (self.type,
+ msg_ids.get(msg, 'Invalid'))]])
+ elif self.type == 'Write_Message':
+ msg = self.stack.pop(0)
+ self.putb([msg, ['%s, %s' % (self.type,
+ msg_ids.get(msg, 'Invalid'))]])
+ elif self.type == 'HDCP2Version':
+ version = self.stack.pop(0)
+ if (version & 0x4):
+ self.putb([18, ['HDCP2']])
else:
- self.putb([18, ['%s' % (self.type)]])
+ self.putb([18, ['NOT HDCP2']])
+ else:
+ self.putb([18, ['%s' % (self.type)]])
elif cmd == 'DATA READ':
# Stack up our data bytes.
self.stack.append(databyte)
projects / libsigrokdecode.git / blobdiff